diff --git a/build/CMakeCache.txt b/build/CMakeCache.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7895d8bdfc8e635e566a8c4257973d7516bb60dd
--- /dev/null
+++ b/build/CMakeCache.txt
@@ -0,0 +1,915 @@
+# This is the CMakeCache file.
+# For build in directory: /home/huchen/FAISS/faiss/build
+# It was generated by CMake: /usr/bin/cmake3
+# You can edit this file to change values found and used by cmake.
+# If you do not want to change any of the values, simply exit the editor.
+# If you do want to change a value, simply edit, save, and exit the editor.
+# The syntax for the file is as follows:
+# KEY:TYPE=VALUE
+# KEY is the name of a variable in the cache.
+# TYPE is a hint to GUIs for the type of VALUE, DO NOT EDIT TYPE!.
+# VALUE is the current value for the KEY.
+
+########################
+# EXTERNAL cache entries
+########################
+
+//Path to a library.
+BLAS_guide_LIBRARY:FILEPATH=BLAS_guide_LIBRARY-NOTFOUND
+
+//Path to a library.
+BLAS_iomp5_LIBRARY:FILEPATH=/opt/dtk-21.04/llvm/lib/libiomp5.so
+
+//Path to a library.
+BLAS_mkl_core_LIBRARY:FILEPATH=/home/huchen/intel-compiler-2017.5.239/mkl/lib/intel64_lin/libmkl_core.so
+
+//Path to a library.
+BLAS_mkl_intel_LIBRARY:FILEPATH=BLAS_mkl_intel_LIBRARY-NOTFOUND
+
+//Path to a library.
+BLAS_mkl_intel_lp64_LIBRARY:FILEPATH=/home/huchen/intel-compiler-2017.5.239/mkl/lib/intel64_lin/libmkl_intel_lp64.so
+
+//Path to a library.
+BLAS_mkl_intel_thread_LIBRARY:FILEPATH=/home/huchen/intel-compiler-2017.5.239/mkl/lib/intel64_lin/libmkl_intel_thread.so
+
+//Builds the googlemock subproject
+BUILD_GMOCK:BOOL=
+
+//No help, variable specified on the command line.
+BUILD_SHARED_LIBS:UNINITIALIZED=ON
+
+//Build the testing tree.
+BUILD_TESTING:BOOL=ON
+
+//Path to a program.
+BZRCOMMAND:FILEPATH=BZRCOMMAND-NOTFOUND
+
+//Path to a program.
+CMAKE_ADDR2LINE:FILEPATH=/opt/rh/devtoolset-7/root/usr/bin/addr2line
+
+//Path to a program.
+CMAKE_AR:FILEPATH=/opt/rh/devtoolset-7/root/usr/bin/ar
+
+//Choose the type of build, options are: None Debug Release RelWithDebInfo
+// MinSizeRel ...
+CMAKE_BUILD_TYPE:STRING=
+
+//Enable/Disable color output during build.
+CMAKE_COLOR_MAKEFILE:BOOL=ON
+
+//CXX compiler
+CMAKE_CXX_COMPILER:FILEPATH=/opt/dtk-21.04/bin/hipcc
+
+//LLVM archiver
+CMAKE_CXX_COMPILER_AR:FILEPATH=CMAKE_CXX_COMPILER_AR-NOTFOUND
+
+//Generate index for LLVM archive
+CMAKE_CXX_COMPILER_RANLIB:FILEPATH=CMAKE_CXX_COMPILER_RANLIB-NOTFOUND
+
+//Flags used by the CXX compiler during all build types.
+CMAKE_CXX_FLAGS:STRING=
+
+//Flags used by the CXX compiler during DEBUG builds.
+CMAKE_CXX_FLAGS_DEBUG:STRING=-g
+
+//Flags used by the CXX compiler during MINSIZEREL builds.
+CMAKE_CXX_FLAGS_MINSIZEREL:STRING=-Os -DNDEBUG
+
+//Flags used by the CXX compiler during RELEASE builds.
+CMAKE_CXX_FLAGS_RELEASE:STRING=-O2 -DNDEBUG
+
+//Flags used by the CXX compiler during RELWITHDEBINFO builds.
+CMAKE_CXX_FLAGS_RELWITHDEBINFO:STRING=-O2 -g -DNDEBUG
+
+//C compiler
+CMAKE_C_COMPILER:FILEPATH=/opt/dtk-21.04/bin/hipcc
+
+//LLVM archiver
+CMAKE_C_COMPILER_AR:FILEPATH=CMAKE_C_COMPILER_AR-NOTFOUND
+
+//Generate index for LLVM archive
+CMAKE_C_COMPILER_RANLIB:FILEPATH=CMAKE_C_COMPILER_RANLIB-NOTFOUND
+
+//Flags used by the C compiler during all build types.
+CMAKE_C_FLAGS:STRING=
+
+//Flags used by the C compiler during DEBUG builds.
+CMAKE_C_FLAGS_DEBUG:STRING=-g
+
+//Flags used by the C compiler during MINSIZEREL builds.
+CMAKE_C_FLAGS_MINSIZEREL:STRING=-Os -DNDEBUG
+
+//Flags used by the C compiler during RELEASE builds.
+CMAKE_C_FLAGS_RELEASE:STRING=-O2 -DNDEBUG
+
+//Flags used by the C compiler during RELWITHDEBINFO builds.
+CMAKE_C_FLAGS_RELWITHDEBINFO:STRING=-O2 -g -DNDEBUG
+
+//Path to a program.
+CMAKE_DLLTOOL:FILEPATH=CMAKE_DLLTOOL-NOTFOUND
+
+//Flags used by the linker during all build types.
+CMAKE_EXE_LINKER_FLAGS:STRING=-Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib
+
+//Flags used by the linker during DEBUG builds.
+CMAKE_EXE_LINKER_FLAGS_DEBUG:STRING=
+
+//Flags used by the linker during MINSIZEREL builds.
+CMAKE_EXE_LINKER_FLAGS_MINSIZEREL:STRING=
+
+//Flags used by the linker during RELEASE builds.
+CMAKE_EXE_LINKER_FLAGS_RELEASE:STRING=
+
+//Flags used by the linker during RELWITHDEBINFO builds.
+CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO:STRING=
+
+//Enable/Disable output of compile commands during generation.
+CMAKE_EXPORT_COMPILE_COMMANDS:BOOL=
+
+//User executables (bin)
+CMAKE_INSTALL_BINDIR:PATH=bin
+
+//Read-only architecture-independent data (DATAROOTDIR)
+CMAKE_INSTALL_DATADIR:PATH=
+
+//Read-only architecture-independent data root (share)
+CMAKE_INSTALL_DATAROOTDIR:PATH=share
+
+//Documentation root (DATAROOTDIR/doc/PROJECT_NAME)
+CMAKE_INSTALL_DOCDIR:PATH=
+
+//C header files (include)
+CMAKE_INSTALL_INCLUDEDIR:PATH=include
+
+//Info documentation (DATAROOTDIR/info)
+CMAKE_INSTALL_INFODIR:PATH=
+
+//Object code libraries (lib64)
+CMAKE_INSTALL_LIBDIR:PATH=lib64
+
+//Program executables (libexec)
+CMAKE_INSTALL_LIBEXECDIR:PATH=libexec
+
+//Locale-dependent data (DATAROOTDIR/locale)
+CMAKE_INSTALL_LOCALEDIR:PATH=
+
+//Modifiable single-machine data (var)
+CMAKE_INSTALL_LOCALSTATEDIR:PATH=var
+
+//Man documentation (DATAROOTDIR/man)
+CMAKE_INSTALL_MANDIR:PATH=
+
+//C header files for non-gcc (/usr/include)
+CMAKE_INSTALL_OLDINCLUDEDIR:PATH=/usr/include
+
+//Install path prefix, prepended onto install directories.
+CMAKE_INSTALL_PREFIX:PATH=/usr/local
+
+//Run-time variable data (LOCALSTATEDIR/run)
+CMAKE_INSTALL_RUNSTATEDIR:PATH=
+
+//System admin executables (sbin)
+CMAKE_INSTALL_SBINDIR:PATH=sbin
+
+//Modifiable architecture-independent data (com)
+CMAKE_INSTALL_SHAREDSTATEDIR:PATH=com
+
+//Read-only single-machine data (etc)
+CMAKE_INSTALL_SYSCONFDIR:PATH=etc
+
+//Path to a program.
+CMAKE_LINKER:FILEPATH=/opt/rh/devtoolset-7/root/usr/bin/ld
+
+//Path to a program.
+CMAKE_MAKE_PROGRAM:FILEPATH=/opt/rh/devtoolset-7/root/usr/bin/gmake
+
+//Flags used by the linker during the creation of modules during
+// all build types.
+CMAKE_MODULE_LINKER_FLAGS:STRING=-Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib
+
+//Flags used by the linker during the creation of modules during
+// DEBUG builds.
+CMAKE_MODULE_LINKER_FLAGS_DEBUG:STRING=
+
+//Flags used by the linker during the creation of modules during
+// MINSIZEREL builds.
+CMAKE_MODULE_LINKER_FLAGS_MINSIZEREL:STRING=
+
+//Flags used by the linker during the creation of modules during
+// RELEASE builds.
+CMAKE_MODULE_LINKER_FLAGS_RELEASE:STRING=
+
+//Flags used by the linker during the creation of modules during
+// RELWITHDEBINFO builds.
+CMAKE_MODULE_LINKER_FLAGS_RELWITHDEBINFO:STRING=
+
+//No help, variable specified on the command line.
+CMAKE_MODULE_PATH:UNINITIALIZED=/opt/dtk-21.04/hip/cmake/
+
+//Path to a program.
+CMAKE_NM:FILEPATH=/opt/rh/devtoolset-7/root/usr/bin/nm
+
+//Path to a program.
+CMAKE_OBJCOPY:FILEPATH=/opt/rh/devtoolset-7/root/usr/bin/objcopy
+
+//Path to a program.
+CMAKE_OBJDUMP:FILEPATH=/opt/rh/devtoolset-7/root/usr/bin/objdump
+
+//Value Computed by CMake
+CMAKE_PROJECT_DESCRIPTION:STATIC=A library for efficient similarity search and clustering of dense vectors.
+
+//Value Computed by CMake
+CMAKE_PROJECT_HOMEPAGE_URL:STATIC=https://github.com/facebookresearch/faiss
+
+//Value Computed by CMake
+CMAKE_PROJECT_NAME:STATIC=faiss
+
+//Value Computed by CMake
+CMAKE_PROJECT_VERSION:STATIC=1.6.4
+
+//Value Computed by CMake
+CMAKE_PROJECT_VERSION_MAJOR:STATIC=1
+
+//Value Computed by CMake
+CMAKE_PROJECT_VERSION_MINOR:STATIC=6
+
+//Value Computed by CMake
+CMAKE_PROJECT_VERSION_PATCH:STATIC=4
+
+//Value Computed by CMake
+CMAKE_PROJECT_VERSION_TWEAK:STATIC=
+
+//Path to a program.
+CMAKE_RANLIB:FILEPATH=/opt/rh/devtoolset-7/root/usr/bin/ranlib
+
+//Path to a program.
+CMAKE_READELF:FILEPATH=/opt/rh/devtoolset-7/root/usr/bin/readelf
+
+//Flags used by the linker during the creation of shared libraries
+// during all build types.
+CMAKE_SHARED_LINKER_FLAGS:STRING=-Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib
+
+//Flags used by the linker during the creation of shared libraries
+// during DEBUG builds.
+CMAKE_SHARED_LINKER_FLAGS_DEBUG:STRING=
+
+//Flags used by the linker during the creation of shared libraries
+// during MINSIZEREL builds.
+CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL:STRING=
+
+//Flags used by the linker during the creation of shared libraries
+// during RELEASE builds.
+CMAKE_SHARED_LINKER_FLAGS_RELEASE:STRING=
+
+//Flags used by the linker during the creation of shared libraries
+// during RELWITHDEBINFO builds.
+CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO:STRING=
+
+//If set, runtime paths are not added when installing shared libraries,
+// but are added when building.
+CMAKE_SKIP_INSTALL_RPATH:BOOL=NO
+
+//If set, runtime paths are not added when using shared libraries.
+CMAKE_SKIP_RPATH:BOOL=NO
+
+//Flags used by the linker during the creation of static libraries
+// during all build types.
+CMAKE_STATIC_LINKER_FLAGS:STRING=
+
+//Flags used by the linker during the creation of static libraries
+// during DEBUG builds.
+CMAKE_STATIC_LINKER_FLAGS_DEBUG:STRING=
+
+//Flags used by the linker during the creation of static libraries
+// during MINSIZEREL builds.
+CMAKE_STATIC_LINKER_FLAGS_MINSIZEREL:STRING=
+
+//Flags used by the linker during the creation of static libraries
+// during RELEASE builds.
+CMAKE_STATIC_LINKER_FLAGS_RELEASE:STRING=
+
+//Flags used by the linker during the creation of static libraries
+// during RELWITHDEBINFO builds.
+CMAKE_STATIC_LINKER_FLAGS_RELWITHDEBINFO:STRING=
+
+//Path to a program.
+CMAKE_STRIP:FILEPATH=/opt/rh/devtoolset-7/root/usr/bin/strip
+
+//If this value is on, makefiles will be generated without the
+// .SILENT directive, and all commands will be echoed to the console
+// during the make.  This is useful for debugging only. With Visual
+// Studio IDE projects all commands are done without /nologo.
+CMAKE_VERBOSE_MAKEFILE:BOOL=FALSE
+
+//Path to the coverage program that CTest uses for performing coverage
+// inspection
+COVERAGE_COMMAND:FILEPATH=/opt/rh/devtoolset-7/root/usr/bin/gcov
+
+//Extra command line flags to pass to the coverage tool
+COVERAGE_EXTRA_FLAGS:STRING=-l
+
+//How many times to retry timed-out CTest submissions.
+CTEST_SUBMIT_RETRY_COUNT:STRING=3
+
+//How long to wait between timed-out CTest submissions.
+CTEST_SUBMIT_RETRY_DELAY:STRING=5
+
+//Path to a program.
+CVSCOMMAND:FILEPATH=CVSCOMMAND-NOTFOUND
+
+//Options passed to the cvs update command.
+CVS_UPDATE_OPTIONS:STRING=-d -A -P
+
+//Maximum time allowed before CTest will kill the test.
+DART_TESTING_TIMEOUT:STRING=1500
+
+//Build C API.
+FAISS_ENABLE_C_API:BOOL=OFF
+
+//Enable support for GPU indexes.
+FAISS_ENABLE_GPU:BOOL=ON
+
+//Build Python extension.
+FAISS_ENABLE_PYTHON:BOOL=ON
+
+FAISS_OPT_LEVEL:BOOL=sse4
+
+//Directory under which to collect all populated content
+FETCHCONTENT_BASE_DIR:PATH=/home/huchen/FAISS/faiss/build/_deps
+
+//Disables all attempts to download or update content and assumes
+// source dirs already exist
+FETCHCONTENT_FULLY_DISCONNECTED:BOOL=OFF
+
+//Enables QUIET option for all content population
+FETCHCONTENT_QUIET:BOOL=ON
+
+//When not empty, overrides where to find pre-populated content
+// for googletest
+FETCHCONTENT_SOURCE_DIR_GOOGLETEST:PATH=
+
+//Enables UPDATE_DISCONNECTED behavior for all content population
+FETCHCONTENT_UPDATES_DISCONNECTED:BOOL=OFF
+
+//Enables UPDATE_DISCONNECTED behavior just for population of googletest
+FETCHCONTENT_UPDATES_DISCONNECTED_GOOGLETEST:BOOL=OFF
+
+//Path to a program.
+GITCOMMAND:FILEPATH=/opt/git-2.30.0/bin/git
+
+//Path to a program.
+HGCOMMAND:FILEPATH=HGCOMMAND-NOTFOUND
+
+//Semicolon delimited flags for CLANG
+HIP_CLANG_FLAGS:STRING=
+
+//Semicolon delimited flags for CLANG
+HIP_CLANG_FLAGS_DEBUG:STRING=
+
+//Semicolon delimited flags for CLANG
+HIP_CLANG_FLAGS_MINSIZEREL:STRING=
+
+//Semicolon delimited flags for CLANG
+HIP_CLANG_FLAGS_RELEASE:STRING=
+
+//Semicolon delimited flags for CLANG
+HIP_CLANG_FLAGS_RELWITHDEBINFO:STRING=
+
+//HIP compiler as computed by hipconfig
+HIP_COMPILER:STRING=clang
+
+//Semicolon delimited flags for HCC
+HIP_HCC_FLAGS:STRING=
+
+//Semicolon delimited flags for HCC
+HIP_HCC_FLAGS_DEBUG:STRING=
+
+//Semicolon delimited flags for HCC
+HIP_HCC_FLAGS_MINSIZEREL:STRING=
+
+//Semicolon delimited flags for HCC
+HIP_HCC_FLAGS_RELEASE:STRING=
+
+//Semicolon delimited flags for HCC
+HIP_HCC_FLAGS_RELWITHDEBINFO:STRING=
+
+//Path to a program.
+HIP_HIPCC_CMAKE_LINKER_HELPER:FILEPATH=/opt/dtk-21.04/hip/bin/hipcc_cmake_linker_helper
+
+//Path to a program.
+HIP_HIPCC_EXECUTABLE:FILEPATH=/opt/dtk-21.04/hip/bin/hipcc
+
+//Semicolon delimited flags for HIPCC
+HIP_HIPCC_FLAGS:STRING=
+
+//Semicolon delimited flags for HIPCC
+HIP_HIPCC_FLAGS_DEBUG:STRING=
+
+//Semicolon delimited flags for HIPCC
+HIP_HIPCC_FLAGS_MINSIZEREL:STRING=
+
+//Semicolon delimited flags for HIPCC
+HIP_HIPCC_FLAGS_RELEASE:STRING=
+
+//Semicolon delimited flags for HIPCC
+HIP_HIPCC_FLAGS_RELWITHDEBINFO:STRING=
+
+//Path to a program.
+HIP_HIPCONFIG_EXECUTABLE:FILEPATH=/opt/dtk-21.04/hip/bin/hipconfig
+
+//Host code compilation mode
+HIP_HOST_COMPILATION_CPP:BOOL=ON
+
+//Semicolon delimted flags for NVCC
+HIP_NVCC_FLAGS:STRING=
+
+//Semicolon delimited flags for NVCC
+HIP_NVCC_FLAGS_DEBUG:STRING=
+
+//Semicolon delimited flags for NVCC
+HIP_NVCC_FLAGS_MINSIZEREL:STRING=
+
+//Semicolon delimited flags for NVCC
+HIP_NVCC_FLAGS_RELEASE:STRING=
+
+//Semicolon delimited flags for NVCC
+HIP_NVCC_FLAGS_RELWITHDEBINFO:STRING=
+
+//HIP platform as computed by hipconfig
+HIP_PLATFORM:STRING=hcc
+
+//HIP installed location
+HIP_ROOT_DIR:PATH=/opt/dtk-21.04/hip
+
+//HIP runtime as computed by hipconfig
+HIP_RUNTIME:STRING=ROCclr
+
+//Print out the commands run while compiling the HIP source file.
+//  With the Makefile generator this defaults to VERBOSE variable
+// specified on the command line, but can be forced on with this
+// option.
+HIP_VERBOSE_BUILD:BOOL=OFF
+
+//Version of HIP as computed from hipcc
+HIP_VERSION:STRING=4.0.21112-7433ef47
+
+//Enable installation of googletest. (Projects embedding googletest
+// may want to turn this OFF.)
+INSTALL_GTEST:BOOL=
+
+//Command to build the project
+MAKECOMMAND:STRING=/usr/bin/cmake3 --build . --config "${CTEST_CONFIGURATION_TYPE}"
+
+//Path to the memory checking command, used for memory error detection.
+MEMORYCHECK_COMMAND:FILEPATH=/opt/rh/devtoolset-7/root/usr/bin/valgrind
+
+//File that contains suppressions for the memory checker
+MEMORYCHECK_SUPPRESSIONS_FILE:FILEPATH=
+
+//CXX compiler flags for OpenMP parallelization
+OpenMP_CXX_FLAGS:STRING=-fopenmp=libomp
+
+//CXX compiler libraries for OpenMP parallelization
+OpenMP_CXX_LIB_NAMES:STRING=omp
+
+//Path to the omp library for OpenMP
+OpenMP_omp_LIBRARY:FILEPATH=/opt/dtk-21.04/llvm/lib/libomp.so
+
+//Path to a program.
+P4COMMAND:FILEPATH=P4COMMAND-NOTFOUND
+
+//Path to a program.
+PYTHON_EXECUTABLE:FILEPATH=/usr/bin/python
+
+//Name of the computer/site where compile is being run
+SITE:STRING=DCUnode2
+
+//Path to the SLURM sbatch executable
+SLURM_SBATCH_COMMAND:FILEPATH=SLURM_SBATCH_COMMAND-NOTFOUND
+
+//Path to the SLURM srun executable
+SLURM_SRUN_COMMAND:FILEPATH=SLURM_SRUN_COMMAND-NOTFOUND
+
+//Path to a program.
+SVNCOMMAND:FILEPATH=SVNCOMMAND-NOTFOUND
+
+//Path to a file.
+SWIG_DIR:PATH=/home/huchen/FAISS/swig-4.0.2-build/share/swig/4.0.2
+
+//Path to a program.
+SWIG_EXECUTABLE:FILEPATH=/home/huchen/FAISS/swig-4.0.2-build/bin/swig
+
+//Swig version
+SWIG_VERSION:STRING=4.0.2
+
+//Value Computed by CMake
+faiss_BINARY_DIR:STATIC=/home/huchen/FAISS/faiss/build
+
+//Value Computed by CMake
+faiss_SOURCE_DIR:STATIC=/home/huchen/FAISS/faiss
+
+//Value Computed by CMake
+googletest-distribution_BINARY_DIR:STATIC=/home/huchen/FAISS/faiss/build/_deps/googletest-build
+
+//Value Computed by CMake
+googletest-distribution_SOURCE_DIR:STATIC=/home/huchen/FAISS/faiss/build/_deps/googletest-src
+
+//Value Computed by CMake
+gtest_BINARY_DIR:STATIC=/home/huchen/FAISS/faiss/build/_deps/googletest-build/googletest
+
+//Value Computed by CMake
+gtest_SOURCE_DIR:STATIC=/home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest
+
+//Build gtest's sample programs.
+gtest_build_samples:BOOL=OFF
+
+//Build all of gtest's own tests.
+gtest_build_tests:BOOL=OFF
+
+//Disable uses of pthreads in gtest.
+gtest_disable_pthreads:BOOL=OFF
+
+//Use shared (DLL) run-time lib even when Google Test is built
+// as static lib.
+gtest_force_shared_crt:BOOL=OFF
+
+//Build gtest with internal symbols hidden in shared libraries.
+gtest_hide_internal_symbols:BOOL=OFF
+
+//Dependencies for the target
+gtest_main_LIB_DEPENDS:STATIC=general;gtest;
+
+//Value Computed by CMake
+pyfaiss_BINARY_DIR:STATIC=/home/huchen/FAISS/faiss/build/faiss/python
+
+//Value Computed by CMake
+pyfaiss_SOURCE_DIR:STATIC=/home/huchen/FAISS/faiss/faiss/python
+
+
+########################
+# INTERNAL cache entries
+########################
+
+//ADVANCED property for variable: BLAS_guide_LIBRARY
+BLAS_guide_LIBRARY-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: BLAS_iomp5_LIBRARY
+BLAS_iomp5_LIBRARY-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: BLAS_mkl_core_LIBRARY
+BLAS_mkl_core_LIBRARY-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: BLAS_mkl_intel_LIBRARY
+BLAS_mkl_intel_LIBRARY-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: BLAS_mkl_intel_lp64_LIBRARY
+BLAS_mkl_intel_lp64_LIBRARY-ADVANCED:INTERNAL=1
+//Have function sgemm_
+BLAS_mkl_intel_lp64_threadlibs_mkl_intel_thread_threadlibs_mkl_core_threadlibs_iomp5_threadlibs_WORKS:INTERNAL=1
+//ADVANCED property for variable: BLAS_mkl_intel_thread_LIBRARY
+BLAS_mkl_intel_thread_LIBRARY-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: BZRCOMMAND
+BZRCOMMAND-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: CMAKE_ADDR2LINE
+CMAKE_ADDR2LINE-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: CMAKE_AR
+CMAKE_AR-ADVANCED:INTERNAL=1
+//This is the directory where this CMakeCache.txt was created
+CMAKE_CACHEFILE_DIR:INTERNAL=/home/huchen/FAISS/faiss/build
+//Major version of cmake used to create the current loaded cache
+CMAKE_CACHE_MAJOR_VERSION:INTERNAL=3
+//Minor version of cmake used to create the current loaded cache
+CMAKE_CACHE_MINOR_VERSION:INTERNAL=17
+//Patch version of cmake used to create the current loaded cache
+CMAKE_CACHE_PATCH_VERSION:INTERNAL=5
+//ADVANCED property for variable: CMAKE_COLOR_MAKEFILE
+CMAKE_COLOR_MAKEFILE-ADVANCED:INTERNAL=1
+//Path to CMake executable.
+CMAKE_COMMAND:INTERNAL=/usr/bin/cmake3
+//Path to cpack program executable.
+CMAKE_CPACK_COMMAND:INTERNAL=/usr/bin/cpack3
+//ADVANCED property for variable: CMAKE_CTEST_COMMAND
+CMAKE_CTEST_COMMAND-ADVANCED:INTERNAL=1
+//Path to ctest program executable.
+CMAKE_CTEST_COMMAND:INTERNAL=/usr/bin/ctest3
+//ADVANCED property for variable: CMAKE_CXX_COMPILER
+CMAKE_CXX_COMPILER-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: CMAKE_CXX_COMPILER_AR
+CMAKE_CXX_COMPILER_AR-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: CMAKE_CXX_COMPILER_RANLIB
+CMAKE_CXX_COMPILER_RANLIB-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: CMAKE_CXX_FLAGS
+CMAKE_CXX_FLAGS-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: CMAKE_CXX_FLAGS_DEBUG
+CMAKE_CXX_FLAGS_DEBUG-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: CMAKE_CXX_FLAGS_MINSIZEREL
+CMAKE_CXX_FLAGS_MINSIZEREL-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: CMAKE_CXX_FLAGS_RELEASE
+CMAKE_CXX_FLAGS_RELEASE-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: CMAKE_CXX_FLAGS_RELWITHDEBINFO
+CMAKE_CXX_FLAGS_RELWITHDEBINFO-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: CMAKE_C_COMPILER
+CMAKE_C_COMPILER-ADVANCED:INTERNAL=1
+//ADVANCED property for variable: CMAKE_C_COMPILER_AR
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+# endif
+
+#elif defined(__VISUALDSPVERSION__) || defined(__ADSPBLACKFIN__) || defined(__ADSPTS__) || defined(__ADSP21000__)
+# define COMPILER_ID "ADSP"
+#if defined(__VISUALDSPVERSION__)
+  /* __VISUALDSPVERSION__ = 0xVVRRPP00 */
+# define COMPILER_VERSION_MAJOR HEX(__VISUALDSPVERSION__>>24)
+# define COMPILER_VERSION_MINOR HEX(__VISUALDSPVERSION__>>16 & 0xFF)
+# define COMPILER_VERSION_PATCH HEX(__VISUALDSPVERSION__>>8  & 0xFF)
+#endif
+
+#elif defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC)
+# define COMPILER_ID "IAR"
+# if defined(__VER__) && defined(__ICCARM__)
+#  define COMPILER_VERSION_MAJOR DEC((__VER__) / 1000000)
+#  define COMPILER_VERSION_MINOR DEC(((__VER__) / 1000) % 1000)
+#  define COMPILER_VERSION_PATCH DEC((__VER__) % 1000)
+#  define COMPILER_VERSION_INTERNAL DEC(__IAR_SYSTEMS_ICC__)
+# elif defined(__VER__) && (defined(__ICCAVR__) || defined(__ICCRX__) || defined(__ICCRH850__) || defined(__ICCRL78__) || defined(__ICC430__) || defined(__ICCRISCV__) || defined(__ICCV850__) || defined(__ICC8051__))
+#  define COMPILER_VERSION_MAJOR DEC((__VER__) / 100)
+#  define COMPILER_VERSION_MINOR DEC((__VER__) - (((__VER__) / 100)*100))
+#  define COMPILER_VERSION_PATCH DEC(__SUBVERSION__)
+#  define COMPILER_VERSION_INTERNAL DEC(__IAR_SYSTEMS_ICC__)
+# endif
+
+#elif defined(__SDCC_VERSION_MAJOR) || defined(SDCC)
+# define COMPILER_ID "SDCC"
+# if defined(__SDCC_VERSION_MAJOR)
+#  define COMPILER_VERSION_MAJOR DEC(__SDCC_VERSION_MAJOR)
+#  define COMPILER_VERSION_MINOR DEC(__SDCC_VERSION_MINOR)
+#  define COMPILER_VERSION_PATCH DEC(__SDCC_VERSION_PATCH)
+# else
+  /* SDCC = VRP */
+#  define COMPILER_VERSION_MAJOR DEC(SDCC/100)
+#  define COMPILER_VERSION_MINOR DEC(SDCC/10 % 10)
+#  define COMPILER_VERSION_PATCH DEC(SDCC    % 10)
+# endif
+
+
+/* These compilers are either not known or too old to define an
+  identification macro.  Try to identify the platform and guess that
+  it is the native compiler.  */
+#elif defined(__hpux) || defined(__hpua)
+# define COMPILER_ID "HP"
+
+#else /* unknown compiler */
+# define COMPILER_ID ""
+#endif
+
+/* Construct the string literal in pieces to prevent the source from
+   getting matched.  Store it in a pointer rather than an array
+   because some compilers will just produce instructions to fill the
+   array rather than assigning a pointer to a static array.  */
+char const* info_compiler = "INFO" ":" "compiler[" COMPILER_ID "]";
+#ifdef SIMULATE_ID
+char const* info_simulate = "INFO" ":" "simulate[" SIMULATE_ID "]";
+#endif
+
+#ifdef __QNXNTO__
+char const* qnxnto = "INFO" ":" "qnxnto[]";
+#endif
+
+#if defined(__CRAYXE) || defined(__CRAYXC)
+char const *info_cray = "INFO" ":" "compiler_wrapper[CrayPrgEnv]";
+#endif
+
+#define STRINGIFY_HELPER(X) #X
+#define STRINGIFY(X) STRINGIFY_HELPER(X)
+
+/* Identify known platforms by name.  */
+#if defined(__linux) || defined(__linux__) || defined(linux)
+# define PLATFORM_ID "Linux"
+
+#elif defined(__CYGWIN__)
+# define PLATFORM_ID "Cygwin"
+
+#elif defined(__MINGW32__)
+# define PLATFORM_ID "MinGW"
+
+#elif defined(__APPLE__)
+# define PLATFORM_ID "Darwin"
+
+#elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
+# define PLATFORM_ID "Windows"
+
+#elif defined(__FreeBSD__) || defined(__FreeBSD)
+# define PLATFORM_ID "FreeBSD"
+
+#elif defined(__NetBSD__) || defined(__NetBSD)
+# define PLATFORM_ID "NetBSD"
+
+#elif defined(__OpenBSD__) || defined(__OPENBSD)
+# define PLATFORM_ID "OpenBSD"
+
+#elif defined(__sun) || defined(sun)
+# define PLATFORM_ID "SunOS"
+
+#elif defined(_AIX) || defined(__AIX) || defined(__AIX__) || defined(__aix) || defined(__aix__)
+# define PLATFORM_ID "AIX"
+
+#elif defined(__hpux) || defined(__hpux__)
+# define PLATFORM_ID "HP-UX"
+
+#elif defined(__HAIKU__)
+# define PLATFORM_ID "Haiku"
+
+#elif defined(__BeOS) || defined(__BEOS__) || defined(_BEOS)
+# define PLATFORM_ID "BeOS"
+
+#elif defined(__QNX__) || defined(__QNXNTO__)
+# define PLATFORM_ID "QNX"
+
+#elif defined(__tru64) || defined(_tru64) || defined(__TRU64__)
+# define PLATFORM_ID "Tru64"
+
+#elif defined(__riscos) || defined(__riscos__)
+# define PLATFORM_ID "RISCos"
+
+#elif defined(__sinix) || defined(__sinix__) || defined(__SINIX__)
+# define PLATFORM_ID "SINIX"
+
+#elif defined(__UNIX_SV__)
+# define PLATFORM_ID "UNIX_SV"
+
+#elif defined(__bsdos__)
+# define PLATFORM_ID "BSDOS"
+
+#elif defined(_MPRAS) || defined(MPRAS)
+# define PLATFORM_ID "MP-RAS"
+
+#elif defined(__osf) || defined(__osf__)
+# define PLATFORM_ID "OSF1"
+
+#elif defined(_SCO_SV) || defined(SCO_SV) || defined(sco_sv)
+# define PLATFORM_ID "SCO_SV"
+
+#elif defined(__ultrix) || defined(__ultrix__) || defined(_ULTRIX)
+# define PLATFORM_ID "ULTRIX"
+
+#elif defined(__XENIX__) || defined(_XENIX) || defined(XENIX)
+# define PLATFORM_ID "Xenix"
+
+#elif defined(__WATCOMC__)
+# if defined(__LINUX__)
+#  define PLATFORM_ID "Linux"
+
+# elif defined(__DOS__)
+#  define PLATFORM_ID "DOS"
+
+# elif defined(__OS2__)
+#  define PLATFORM_ID "OS2"
+
+# elif defined(__WINDOWS__)
+#  define PLATFORM_ID "Windows3x"
+
+# else /* unknown platform */
+#  define PLATFORM_ID
+# endif
+
+#elif defined(__INTEGRITY)
+# if defined(INT_178B)
+#  define PLATFORM_ID "Integrity178"
+
+# else /* regular Integrity */
+#  define PLATFORM_ID "Integrity"
+# endif
+
+#else /* unknown platform */
+# define PLATFORM_ID
+
+#endif
+
+/* For windows compilers MSVC and Intel we can determine
+   the architecture of the compiler being used.  This is because
+   the compilers do not have flags that can change the architecture,
+   but rather depend on which compiler is being used
+*/
+#if defined(_WIN32) && defined(_MSC_VER)
+# if defined(_M_IA64)
+#  define ARCHITECTURE_ID "IA64"
+
+# elif defined(_M_X64) || defined(_M_AMD64)
+#  define ARCHITECTURE_ID "x64"
+
+# elif defined(_M_IX86)
+#  define ARCHITECTURE_ID "X86"
+
+# elif defined(_M_ARM64)
+#  define ARCHITECTURE_ID "ARM64"
+
+# elif defined(_M_ARM)
+#  if _M_ARM == 4
+#   define ARCHITECTURE_ID "ARMV4I"
+#  elif _M_ARM == 5
+#   define ARCHITECTURE_ID "ARMV5I"
+#  else
+#   define ARCHITECTURE_ID "ARMV" STRINGIFY(_M_ARM)
+#  endif
+
+# elif defined(_M_MIPS)
+#  define ARCHITECTURE_ID "MIPS"
+
+# elif defined(_M_SH)
+#  define ARCHITECTURE_ID "SHx"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#elif defined(__WATCOMC__)
+# if defined(_M_I86)
+#  define ARCHITECTURE_ID "I86"
+
+# elif defined(_M_IX86)
+#  define ARCHITECTURE_ID "X86"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#elif defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC)
+# if defined(__ICCARM__)
+#  define ARCHITECTURE_ID "ARM"
+
+# elif defined(__ICCRX__)
+#  define ARCHITECTURE_ID "RX"
+
+# elif defined(__ICCRH850__)
+#  define ARCHITECTURE_ID "RH850"
+
+# elif defined(__ICCRL78__)
+#  define ARCHITECTURE_ID "RL78"
+
+# elif defined(__ICCRISCV__)
+#  define ARCHITECTURE_ID "RISCV"
+
+# elif defined(__ICCAVR__)
+#  define ARCHITECTURE_ID "AVR"
+
+# elif defined(__ICC430__)
+#  define ARCHITECTURE_ID "MSP430"
+
+# elif defined(__ICCV850__)
+#  define ARCHITECTURE_ID "V850"
+
+# elif defined(__ICC8051__)
+#  define ARCHITECTURE_ID "8051"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#elif defined(__ghs__)
+# if defined(__PPC64__)
+#  define ARCHITECTURE_ID "PPC64"
+
+# elif defined(__ppc__)
+#  define ARCHITECTURE_ID "PPC"
+
+# elif defined(__ARM__)
+#  define ARCHITECTURE_ID "ARM"
+
+# elif defined(__x86_64__)
+#  define ARCHITECTURE_ID "x64"
+
+# elif defined(__i386__)
+#  define ARCHITECTURE_ID "X86"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+#else
+#  define ARCHITECTURE_ID
+#endif
+
+/* Convert integer to decimal digit literals.  */
+#define DEC(n)                   \
+  ('0' + (((n) / 10000000)%10)), \
+  ('0' + (((n) / 1000000)%10)),  \
+  ('0' + (((n) / 100000)%10)),   \
+  ('0' + (((n) / 10000)%10)),    \
+  ('0' + (((n) / 1000)%10)),     \
+  ('0' + (((n) / 100)%10)),      \
+  ('0' + (((n) / 10)%10)),       \
+  ('0' +  ((n) % 10))
+
+/* Convert integer to hex digit literals.  */
+#define HEX(n)             \
+  ('0' + ((n)>>28 & 0xF)), \
+  ('0' + ((n)>>24 & 0xF)), \
+  ('0' + ((n)>>20 & 0xF)), \
+  ('0' + ((n)>>16 & 0xF)), \
+  ('0' + ((n)>>12 & 0xF)), \
+  ('0' + ((n)>>8  & 0xF)), \
+  ('0' + ((n)>>4  & 0xF)), \
+  ('0' + ((n)     & 0xF))
+
+/* Construct a string literal encoding the version number components. */
+#ifdef COMPILER_VERSION_MAJOR
+char const info_version[] = {
+  'I', 'N', 'F', 'O', ':',
+  'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','[',
+  COMPILER_VERSION_MAJOR,
+# ifdef COMPILER_VERSION_MINOR
+  '.', COMPILER_VERSION_MINOR,
+#  ifdef COMPILER_VERSION_PATCH
+   '.', COMPILER_VERSION_PATCH,
+#   ifdef COMPILER_VERSION_TWEAK
+    '.', COMPILER_VERSION_TWEAK,
+#   endif
+#  endif
+# endif
+  ']','\0'};
+#endif
+
+/* Construct a string literal encoding the internal version number. */
+#ifdef COMPILER_VERSION_INTERNAL
+char const info_version_internal[] = {
+  'I', 'N', 'F', 'O', ':',
+  'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','_',
+  'i','n','t','e','r','n','a','l','[',
+  COMPILER_VERSION_INTERNAL,']','\0'};
+#endif
+
+/* Construct a string literal encoding the version number components. */
+#ifdef SIMULATE_VERSION_MAJOR
+char const info_simulate_version[] = {
+  'I', 'N', 'F', 'O', ':',
+  's','i','m','u','l','a','t','e','_','v','e','r','s','i','o','n','[',
+  SIMULATE_VERSION_MAJOR,
+# ifdef SIMULATE_VERSION_MINOR
+  '.', SIMULATE_VERSION_MINOR,
+#  ifdef SIMULATE_VERSION_PATCH
+   '.', SIMULATE_VERSION_PATCH,
+#   ifdef SIMULATE_VERSION_TWEAK
+    '.', SIMULATE_VERSION_TWEAK,
+#   endif
+#  endif
+# endif
+  ']','\0'};
+#endif
+
+/* Construct the string literal in pieces to prevent the source from
+   getting matched.  Store it in a pointer rather than an array
+   because some compilers will just produce instructions to fill the
+   array rather than assigning a pointer to a static array.  */
+char const* info_platform = "INFO" ":" "platform[" PLATFORM_ID "]";
+char const* info_arch = "INFO" ":" "arch[" ARCHITECTURE_ID "]";
+
+
+
+
+#if !defined(__STDC__)
+# if (defined(_MSC_VER) && !defined(__clang__)) \
+  || (defined(__ibmxl__) || defined(__IBMC__))
+#  define C_DIALECT "90"
+# else
+#  define C_DIALECT
+# endif
+#elif __STDC_VERSION__ >= 201000L
+# define C_DIALECT "11"
+#elif __STDC_VERSION__ >= 199901L
+# define C_DIALECT "99"
+#else
+# define C_DIALECT "90"
+#endif
+const char* info_language_dialect_default =
+  "INFO" ":" "dialect_default[" C_DIALECT "]";
+
+/*--------------------------------------------------------------------------*/
+
+#ifdef ID_VOID_MAIN
+void main() {}
+#else
+# if defined(__CLASSIC_C__)
+int main(argc, argv) int argc; char *argv[];
+# else
+int main(int argc, char* argv[])
+# endif
+{
+  int require = 0;
+  require += info_compiler[argc];
+  require += info_platform[argc];
+  require += info_arch[argc];
+#ifdef COMPILER_VERSION_MAJOR
+  require += info_version[argc];
+#endif
+#ifdef COMPILER_VERSION_INTERNAL
+  require += info_version_internal[argc];
+#endif
+#ifdef SIMULATE_ID
+  require += info_simulate[argc];
+#endif
+#ifdef SIMULATE_VERSION_MAJOR
+  require += info_simulate_version[argc];
+#endif
+#if defined(__CRAYXE) || defined(__CRAYXC)
+  require += info_cray[argc];
+#endif
+  require += info_language_dialect_default[argc];
+  (void)argv;
+  return require;
+}
+#endif
diff --git a/build/CMakeFiles/3.17.5/CompilerIdC/a.out b/build/CMakeFiles/3.17.5/CompilerIdC/a.out
new file mode 100755
index 0000000000000000000000000000000000000000..b4c1153a5b095a78234e7e14c1cd67a6f86482eb
Binary files /dev/null and b/build/CMakeFiles/3.17.5/CompilerIdC/a.out differ
diff --git a/build/CMakeFiles/3.17.5/CompilerIdCXX/CMakeCXXCompilerId.cpp b/build/CMakeFiles/3.17.5/CompilerIdCXX/CMakeCXXCompilerId.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..69cfdba6bc7bccb09bf234388908de035caa0969
--- /dev/null
+++ b/build/CMakeFiles/3.17.5/CompilerIdCXX/CMakeCXXCompilerId.cpp
@@ -0,0 +1,660 @@
+/* This source file must have a .cpp extension so that all C++ compilers
+   recognize the extension without flags.  Borland does not know .cxx for
+   example.  */
+#ifndef __cplusplus
+# error "A C compiler has been selected for C++."
+#endif
+
+
+/* Version number components: V=Version, R=Revision, P=Patch
+   Version date components:   YYYY=Year, MM=Month,   DD=Day  */
+
+#if defined(__COMO__)
+# define COMPILER_ID "Comeau"
+  /* __COMO_VERSION__ = VRR */
+# define COMPILER_VERSION_MAJOR DEC(__COMO_VERSION__ / 100)
+# define COMPILER_VERSION_MINOR DEC(__COMO_VERSION__ % 100)
+
+#elif defined(__INTEL_COMPILER) || defined(__ICC)
+# define COMPILER_ID "Intel"
+# if defined(_MSC_VER)
+#  define SIMULATE_ID "MSVC"
+# endif
+# if defined(__GNUC__)
+#  define SIMULATE_ID "GNU"
+# endif
+  /* __INTEL_COMPILER = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__INTEL_COMPILER/100)
+# define COMPILER_VERSION_MINOR DEC(__INTEL_COMPILER/10 % 10)
+# if defined(__INTEL_COMPILER_UPDATE)
+#  define COMPILER_VERSION_PATCH DEC(__INTEL_COMPILER_UPDATE)
+# else
+#  define COMPILER_VERSION_PATCH DEC(__INTEL_COMPILER   % 10)
+# endif
+# if defined(__INTEL_COMPILER_BUILD_DATE)
+  /* __INTEL_COMPILER_BUILD_DATE = YYYYMMDD */
+#  define COMPILER_VERSION_TWEAK DEC(__INTEL_COMPILER_BUILD_DATE)
+# endif
+# if defined(_MSC_VER)
+   /* _MSC_VER = VVRR */
+#  define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
+#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
+# endif
+# if defined(__GNUC__)
+#  define SIMULATE_VERSION_MAJOR DEC(__GNUC__)
+# elif defined(__GNUG__)
+#  define SIMULATE_VERSION_MAJOR DEC(__GNUG__)
+# endif
+# if defined(__GNUC_MINOR__)
+#  define SIMULATE_VERSION_MINOR DEC(__GNUC_MINOR__)
+# endif
+# if defined(__GNUC_PATCHLEVEL__)
+#  define SIMULATE_VERSION_PATCH DEC(__GNUC_PATCHLEVEL__)
+# endif
+
+#elif defined(__PATHCC__)
+# define COMPILER_ID "PathScale"
+# define COMPILER_VERSION_MAJOR DEC(__PATHCC__)
+# define COMPILER_VERSION_MINOR DEC(__PATHCC_MINOR__)
+# if defined(__PATHCC_PATCHLEVEL__)
+#  define COMPILER_VERSION_PATCH DEC(__PATHCC_PATCHLEVEL__)
+# endif
+
+#elif defined(__BORLANDC__) && defined(__CODEGEARC_VERSION__)
+# define COMPILER_ID "Embarcadero"
+# define COMPILER_VERSION_MAJOR HEX(__CODEGEARC_VERSION__>>24 & 0x00FF)
+# define COMPILER_VERSION_MINOR HEX(__CODEGEARC_VERSION__>>16 & 0x00FF)
+# define COMPILER_VERSION_PATCH DEC(__CODEGEARC_VERSION__     & 0xFFFF)
+
+#elif defined(__BORLANDC__)
+# define COMPILER_ID "Borland"
+  /* __BORLANDC__ = 0xVRR */
+# define COMPILER_VERSION_MAJOR HEX(__BORLANDC__>>8)
+# define COMPILER_VERSION_MINOR HEX(__BORLANDC__ & 0xFF)
+
+#elif defined(__WATCOMC__) && __WATCOMC__ < 1200
+# define COMPILER_ID "Watcom"
+   /* __WATCOMC__ = VVRR */
+# define COMPILER_VERSION_MAJOR DEC(__WATCOMC__ / 100)
+# define COMPILER_VERSION_MINOR DEC((__WATCOMC__ / 10) % 10)
+# if (__WATCOMC__ % 10) > 0
+#  define COMPILER_VERSION_PATCH DEC(__WATCOMC__ % 10)
+# endif
+
+#elif defined(__WATCOMC__)
+# define COMPILER_ID "OpenWatcom"
+   /* __WATCOMC__ = VVRP + 1100 */
+# define COMPILER_VERSION_MAJOR DEC((__WATCOMC__ - 1100) / 100)
+# define COMPILER_VERSION_MINOR DEC((__WATCOMC__ / 10) % 10)
+# if (__WATCOMC__ % 10) > 0
+#  define COMPILER_VERSION_PATCH DEC(__WATCOMC__ % 10)
+# endif
+
+#elif defined(__SUNPRO_CC)
+# define COMPILER_ID "SunPro"
+# if __SUNPRO_CC >= 0x5100
+   /* __SUNPRO_CC = 0xVRRP */
+#  define COMPILER_VERSION_MAJOR HEX(__SUNPRO_CC>>12)
+#  define COMPILER_VERSION_MINOR HEX(__SUNPRO_CC>>4 & 0xFF)
+#  define COMPILER_VERSION_PATCH HEX(__SUNPRO_CC    & 0xF)
+# else
+   /* __SUNPRO_CC = 0xVRP */
+#  define COMPILER_VERSION_MAJOR HEX(__SUNPRO_CC>>8)
+#  define COMPILER_VERSION_MINOR HEX(__SUNPRO_CC>>4 & 0xF)
+#  define COMPILER_VERSION_PATCH HEX(__SUNPRO_CC    & 0xF)
+# endif
+
+#elif defined(__HP_aCC)
+# define COMPILER_ID "HP"
+  /* __HP_aCC = VVRRPP */
+# define COMPILER_VERSION_MAJOR DEC(__HP_aCC/10000)
+# define COMPILER_VERSION_MINOR DEC(__HP_aCC/100 % 100)
+# define COMPILER_VERSION_PATCH DEC(__HP_aCC     % 100)
+
+#elif defined(__DECCXX)
+# define COMPILER_ID "Compaq"
+  /* __DECCXX_VER = VVRRTPPPP */
+# define COMPILER_VERSION_MAJOR DEC(__DECCXX_VER/10000000)
+# define COMPILER_VERSION_MINOR DEC(__DECCXX_VER/100000  % 100)
+# define COMPILER_VERSION_PATCH DEC(__DECCXX_VER         % 10000)
+
+#elif defined(__IBMCPP__) && defined(__COMPILER_VER__)
+# define COMPILER_ID "zOS"
+  /* __IBMCPP__ = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
+# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
+
+#elif defined(__ibmxl__) && defined(__clang__)
+# define COMPILER_ID "XLClang"
+# define COMPILER_VERSION_MAJOR DEC(__ibmxl_version__)
+# define COMPILER_VERSION_MINOR DEC(__ibmxl_release__)
+# define COMPILER_VERSION_PATCH DEC(__ibmxl_modification__)
+# define COMPILER_VERSION_TWEAK DEC(__ibmxl_ptf_fix_level__)
+
+
+#elif defined(__IBMCPP__) && !defined(__COMPILER_VER__) && __IBMCPP__ >= 800
+# define COMPILER_ID "XL"
+  /* __IBMCPP__ = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
+# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
+
+#elif defined(__IBMCPP__) && !defined(__COMPILER_VER__) && __IBMCPP__ < 800
+# define COMPILER_ID "VisualAge"
+  /* __IBMCPP__ = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
+# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
+
+#elif defined(__PGI)
+# define COMPILER_ID "PGI"
+# define COMPILER_VERSION_MAJOR DEC(__PGIC__)
+# define COMPILER_VERSION_MINOR DEC(__PGIC_MINOR__)
+# if defined(__PGIC_PATCHLEVEL__)
+#  define COMPILER_VERSION_PATCH DEC(__PGIC_PATCHLEVEL__)
+# endif
+
+#elif defined(_CRAYC)
+# define COMPILER_ID "Cray"
+# define COMPILER_VERSION_MAJOR DEC(_RELEASE_MAJOR)
+# define COMPILER_VERSION_MINOR DEC(_RELEASE_MINOR)
+
+#elif defined(__TI_COMPILER_VERSION__)
+# define COMPILER_ID "TI"
+  /* __TI_COMPILER_VERSION__ = VVVRRRPPP */
+# define COMPILER_VERSION_MAJOR DEC(__TI_COMPILER_VERSION__/1000000)
+# define COMPILER_VERSION_MINOR DEC(__TI_COMPILER_VERSION__/1000   % 1000)
+# define COMPILER_VERSION_PATCH DEC(__TI_COMPILER_VERSION__        % 1000)
+
+#elif defined(__FUJITSU) || defined(__FCC_VERSION) || defined(__fcc_version)
+# define COMPILER_ID "Fujitsu"
+
+#elif defined(__ghs__)
+# define COMPILER_ID "GHS"
+/* __GHS_VERSION_NUMBER = VVVVRP */
+# ifdef __GHS_VERSION_NUMBER
+# define COMPILER_VERSION_MAJOR DEC(__GHS_VERSION_NUMBER / 100)
+# define COMPILER_VERSION_MINOR DEC(__GHS_VERSION_NUMBER / 10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__GHS_VERSION_NUMBER      % 10)
+# endif
+
+#elif defined(__SCO_VERSION__)
+# define COMPILER_ID "SCO"
+
+#elif defined(__ARMCC_VERSION) && !defined(__clang__)
+# define COMPILER_ID "ARMCC"
+#if __ARMCC_VERSION >= 1000000
+  /* __ARMCC_VERSION = VRRPPPP */
+  # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/1000000)
+  # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 100)
+  # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION     % 10000)
+#else
+  /* __ARMCC_VERSION = VRPPPP */
+  # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/100000)
+  # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 10)
+  # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION    % 10000)
+#endif
+
+
+#elif defined(__clang__) && defined(__apple_build_version__)
+# define COMPILER_ID "AppleClang"
+# if defined(_MSC_VER)
+#  define SIMULATE_ID "MSVC"
+# endif
+# define COMPILER_VERSION_MAJOR DEC(__clang_major__)
+# define COMPILER_VERSION_MINOR DEC(__clang_minor__)
+# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__)
+# if defined(_MSC_VER)
+   /* _MSC_VER = VVRR */
+#  define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
+#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
+# endif
+# define COMPILER_VERSION_TWEAK DEC(__apple_build_version__)
+
+#elif defined(__clang__) && defined(__ARMCOMPILER_VERSION)
+# define COMPILER_ID "ARMClang"
+  # define COMPILER_VERSION_MAJOR DEC(__ARMCOMPILER_VERSION/1000000)
+  # define COMPILER_VERSION_MINOR DEC(__ARMCOMPILER_VERSION/10000 % 100)
+  # define COMPILER_VERSION_PATCH DEC(__ARMCOMPILER_VERSION     % 10000)
+# define COMPILER_VERSION_INTERNAL DEC(__ARMCOMPILER_VERSION)
+
+#elif defined(__clang__)
+# define COMPILER_ID "Clang"
+# if defined(_MSC_VER)
+#  define SIMULATE_ID "MSVC"
+# endif
+# define COMPILER_VERSION_MAJOR DEC(__clang_major__)
+# define COMPILER_VERSION_MINOR DEC(__clang_minor__)
+# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__)
+# if defined(_MSC_VER)
+   /* _MSC_VER = VVRR */
+#  define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
+#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
+# endif
+
+#elif defined(__GNUC__) || defined(__GNUG__)
+# define COMPILER_ID "GNU"
+# if defined(__GNUC__)
+#  define COMPILER_VERSION_MAJOR DEC(__GNUC__)
+# else
+#  define COMPILER_VERSION_MAJOR DEC(__GNUG__)
+# endif
+# if defined(__GNUC_MINOR__)
+#  define COMPILER_VERSION_MINOR DEC(__GNUC_MINOR__)
+# endif
+# if defined(__GNUC_PATCHLEVEL__)
+#  define COMPILER_VERSION_PATCH DEC(__GNUC_PATCHLEVEL__)
+# endif
+
+#elif defined(_MSC_VER)
+# define COMPILER_ID "MSVC"
+  /* _MSC_VER = VVRR */
+# define COMPILER_VERSION_MAJOR DEC(_MSC_VER / 100)
+# define COMPILER_VERSION_MINOR DEC(_MSC_VER % 100)
+# if defined(_MSC_FULL_VER)
+#  if _MSC_VER >= 1400
+    /* _MSC_FULL_VER = VVRRPPPPP */
+#   define COMPILER_VERSION_PATCH DEC(_MSC_FULL_VER % 100000)
+#  else
+    /* _MSC_FULL_VER = VVRRPPPP */
+#   define COMPILER_VERSION_PATCH DEC(_MSC_FULL_VER % 10000)
+#  endif
+# endif
+# if defined(_MSC_BUILD)
+#  define COMPILER_VERSION_TWEAK DEC(_MSC_BUILD)
+# endif
+
+#elif defined(__VISUALDSPVERSION__) || defined(__ADSPBLACKFIN__) || defined(__ADSPTS__) || defined(__ADSP21000__)
+# define COMPILER_ID "ADSP"
+#if defined(__VISUALDSPVERSION__)
+  /* __VISUALDSPVERSION__ = 0xVVRRPP00 */
+# define COMPILER_VERSION_MAJOR HEX(__VISUALDSPVERSION__>>24)
+# define COMPILER_VERSION_MINOR HEX(__VISUALDSPVERSION__>>16 & 0xFF)
+# define COMPILER_VERSION_PATCH HEX(__VISUALDSPVERSION__>>8  & 0xFF)
+#endif
+
+#elif defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC)
+# define COMPILER_ID "IAR"
+# if defined(__VER__) && defined(__ICCARM__)
+#  define COMPILER_VERSION_MAJOR DEC((__VER__) / 1000000)
+#  define COMPILER_VERSION_MINOR DEC(((__VER__) / 1000) % 1000)
+#  define COMPILER_VERSION_PATCH DEC((__VER__) % 1000)
+#  define COMPILER_VERSION_INTERNAL DEC(__IAR_SYSTEMS_ICC__)
+# elif defined(__VER__) && (defined(__ICCAVR__) || defined(__ICCRX__) || defined(__ICCRH850__) || defined(__ICCRL78__) || defined(__ICC430__) || defined(__ICCRISCV__) || defined(__ICCV850__) || defined(__ICC8051__))
+#  define COMPILER_VERSION_MAJOR DEC((__VER__) / 100)
+#  define COMPILER_VERSION_MINOR DEC((__VER__) - (((__VER__) / 100)*100))
+#  define COMPILER_VERSION_PATCH DEC(__SUBVERSION__)
+#  define COMPILER_VERSION_INTERNAL DEC(__IAR_SYSTEMS_ICC__)
+# endif
+
+
+/* These compilers are either not known or too old to define an
+  identification macro.  Try to identify the platform and guess that
+  it is the native compiler.  */
+#elif defined(__hpux) || defined(__hpua)
+# define COMPILER_ID "HP"
+
+#else /* unknown compiler */
+# define COMPILER_ID ""
+#endif
+
+/* Construct the string literal in pieces to prevent the source from
+   getting matched.  Store it in a pointer rather than an array
+   because some compilers will just produce instructions to fill the
+   array rather than assigning a pointer to a static array.  */
+char const* info_compiler = "INFO" ":" "compiler[" COMPILER_ID "]";
+#ifdef SIMULATE_ID
+char const* info_simulate = "INFO" ":" "simulate[" SIMULATE_ID "]";
+#endif
+
+#ifdef __QNXNTO__
+char const* qnxnto = "INFO" ":" "qnxnto[]";
+#endif
+
+#if defined(__CRAYXE) || defined(__CRAYXC)
+char const *info_cray = "INFO" ":" "compiler_wrapper[CrayPrgEnv]";
+#endif
+
+#define STRINGIFY_HELPER(X) #X
+#define STRINGIFY(X) STRINGIFY_HELPER(X)
+
+/* Identify known platforms by name.  */
+#if defined(__linux) || defined(__linux__) || defined(linux)
+# define PLATFORM_ID "Linux"
+
+#elif defined(__CYGWIN__)
+# define PLATFORM_ID "Cygwin"
+
+#elif defined(__MINGW32__)
+# define PLATFORM_ID "MinGW"
+
+#elif defined(__APPLE__)
+# define PLATFORM_ID "Darwin"
+
+#elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
+# define PLATFORM_ID "Windows"
+
+#elif defined(__FreeBSD__) || defined(__FreeBSD)
+# define PLATFORM_ID "FreeBSD"
+
+#elif defined(__NetBSD__) || defined(__NetBSD)
+# define PLATFORM_ID "NetBSD"
+
+#elif defined(__OpenBSD__) || defined(__OPENBSD)
+# define PLATFORM_ID "OpenBSD"
+
+#elif defined(__sun) || defined(sun)
+# define PLATFORM_ID "SunOS"
+
+#elif defined(_AIX) || defined(__AIX) || defined(__AIX__) || defined(__aix) || defined(__aix__)
+# define PLATFORM_ID "AIX"
+
+#elif defined(__hpux) || defined(__hpux__)
+# define PLATFORM_ID "HP-UX"
+
+#elif defined(__HAIKU__)
+# define PLATFORM_ID "Haiku"
+
+#elif defined(__BeOS) || defined(__BEOS__) || defined(_BEOS)
+# define PLATFORM_ID "BeOS"
+
+#elif defined(__QNX__) || defined(__QNXNTO__)
+# define PLATFORM_ID "QNX"
+
+#elif defined(__tru64) || defined(_tru64) || defined(__TRU64__)
+# define PLATFORM_ID "Tru64"
+
+#elif defined(__riscos) || defined(__riscos__)
+# define PLATFORM_ID "RISCos"
+
+#elif defined(__sinix) || defined(__sinix__) || defined(__SINIX__)
+# define PLATFORM_ID "SINIX"
+
+#elif defined(__UNIX_SV__)
+# define PLATFORM_ID "UNIX_SV"
+
+#elif defined(__bsdos__)
+# define PLATFORM_ID "BSDOS"
+
+#elif defined(_MPRAS) || defined(MPRAS)
+# define PLATFORM_ID "MP-RAS"
+
+#elif defined(__osf) || defined(__osf__)
+# define PLATFORM_ID "OSF1"
+
+#elif defined(_SCO_SV) || defined(SCO_SV) || defined(sco_sv)
+# define PLATFORM_ID "SCO_SV"
+
+#elif defined(__ultrix) || defined(__ultrix__) || defined(_ULTRIX)
+# define PLATFORM_ID "ULTRIX"
+
+#elif defined(__XENIX__) || defined(_XENIX) || defined(XENIX)
+# define PLATFORM_ID "Xenix"
+
+#elif defined(__WATCOMC__)
+# if defined(__LINUX__)
+#  define PLATFORM_ID "Linux"
+
+# elif defined(__DOS__)
+#  define PLATFORM_ID "DOS"
+
+# elif defined(__OS2__)
+#  define PLATFORM_ID "OS2"
+
+# elif defined(__WINDOWS__)
+#  define PLATFORM_ID "Windows3x"
+
+# else /* unknown platform */
+#  define PLATFORM_ID
+# endif
+
+#elif defined(__INTEGRITY)
+# if defined(INT_178B)
+#  define PLATFORM_ID "Integrity178"
+
+# else /* regular Integrity */
+#  define PLATFORM_ID "Integrity"
+# endif
+
+#else /* unknown platform */
+# define PLATFORM_ID
+
+#endif
+
+/* For windows compilers MSVC and Intel we can determine
+   the architecture of the compiler being used.  This is because
+   the compilers do not have flags that can change the architecture,
+   but rather depend on which compiler is being used
+*/
+#if defined(_WIN32) && defined(_MSC_VER)
+# if defined(_M_IA64)
+#  define ARCHITECTURE_ID "IA64"
+
+# elif defined(_M_X64) || defined(_M_AMD64)
+#  define ARCHITECTURE_ID "x64"
+
+# elif defined(_M_IX86)
+#  define ARCHITECTURE_ID "X86"
+
+# elif defined(_M_ARM64)
+#  define ARCHITECTURE_ID "ARM64"
+
+# elif defined(_M_ARM)
+#  if _M_ARM == 4
+#   define ARCHITECTURE_ID "ARMV4I"
+#  elif _M_ARM == 5
+#   define ARCHITECTURE_ID "ARMV5I"
+#  else
+#   define ARCHITECTURE_ID "ARMV" STRINGIFY(_M_ARM)
+#  endif
+
+# elif defined(_M_MIPS)
+#  define ARCHITECTURE_ID "MIPS"
+
+# elif defined(_M_SH)
+#  define ARCHITECTURE_ID "SHx"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#elif defined(__WATCOMC__)
+# if defined(_M_I86)
+#  define ARCHITECTURE_ID "I86"
+
+# elif defined(_M_IX86)
+#  define ARCHITECTURE_ID "X86"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#elif defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC)
+# if defined(__ICCARM__)
+#  define ARCHITECTURE_ID "ARM"
+
+# elif defined(__ICCRX__)
+#  define ARCHITECTURE_ID "RX"
+
+# elif defined(__ICCRH850__)
+#  define ARCHITECTURE_ID "RH850"
+
+# elif defined(__ICCRL78__)
+#  define ARCHITECTURE_ID "RL78"
+
+# elif defined(__ICCRISCV__)
+#  define ARCHITECTURE_ID "RISCV"
+
+# elif defined(__ICCAVR__)
+#  define ARCHITECTURE_ID "AVR"
+
+# elif defined(__ICC430__)
+#  define ARCHITECTURE_ID "MSP430"
+
+# elif defined(__ICCV850__)
+#  define ARCHITECTURE_ID "V850"
+
+# elif defined(__ICC8051__)
+#  define ARCHITECTURE_ID "8051"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#elif defined(__ghs__)
+# if defined(__PPC64__)
+#  define ARCHITECTURE_ID "PPC64"
+
+# elif defined(__ppc__)
+#  define ARCHITECTURE_ID "PPC"
+
+# elif defined(__ARM__)
+#  define ARCHITECTURE_ID "ARM"
+
+# elif defined(__x86_64__)
+#  define ARCHITECTURE_ID "x64"
+
+# elif defined(__i386__)
+#  define ARCHITECTURE_ID "X86"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+#else
+#  define ARCHITECTURE_ID
+#endif
+
+/* Convert integer to decimal digit literals.  */
+#define DEC(n)                   \
+  ('0' + (((n) / 10000000)%10)), \
+  ('0' + (((n) / 1000000)%10)),  \
+  ('0' + (((n) / 100000)%10)),   \
+  ('0' + (((n) / 10000)%10)),    \
+  ('0' + (((n) / 1000)%10)),     \
+  ('0' + (((n) / 100)%10)),      \
+  ('0' + (((n) / 10)%10)),       \
+  ('0' +  ((n) % 10))
+
+/* Convert integer to hex digit literals.  */
+#define HEX(n)             \
+  ('0' + ((n)>>28 & 0xF)), \
+  ('0' + ((n)>>24 & 0xF)), \
+  ('0' + ((n)>>20 & 0xF)), \
+  ('0' + ((n)>>16 & 0xF)), \
+  ('0' + ((n)>>12 & 0xF)), \
+  ('0' + ((n)>>8  & 0xF)), \
+  ('0' + ((n)>>4  & 0xF)), \
+  ('0' + ((n)     & 0xF))
+
+/* Construct a string literal encoding the version number components. */
+#ifdef COMPILER_VERSION_MAJOR
+char const info_version[] = {
+  'I', 'N', 'F', 'O', ':',
+  'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','[',
+  COMPILER_VERSION_MAJOR,
+# ifdef COMPILER_VERSION_MINOR
+  '.', COMPILER_VERSION_MINOR,
+#  ifdef COMPILER_VERSION_PATCH
+   '.', COMPILER_VERSION_PATCH,
+#   ifdef COMPILER_VERSION_TWEAK
+    '.', COMPILER_VERSION_TWEAK,
+#   endif
+#  endif
+# endif
+  ']','\0'};
+#endif
+
+/* Construct a string literal encoding the internal version number. */
+#ifdef COMPILER_VERSION_INTERNAL
+char const info_version_internal[] = {
+  'I', 'N', 'F', 'O', ':',
+  'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','_',
+  'i','n','t','e','r','n','a','l','[',
+  COMPILER_VERSION_INTERNAL,']','\0'};
+#endif
+
+/* Construct a string literal encoding the version number components. */
+#ifdef SIMULATE_VERSION_MAJOR
+char const info_simulate_version[] = {
+  'I', 'N', 'F', 'O', ':',
+  's','i','m','u','l','a','t','e','_','v','e','r','s','i','o','n','[',
+  SIMULATE_VERSION_MAJOR,
+# ifdef SIMULATE_VERSION_MINOR
+  '.', SIMULATE_VERSION_MINOR,
+#  ifdef SIMULATE_VERSION_PATCH
+   '.', SIMULATE_VERSION_PATCH,
+#   ifdef SIMULATE_VERSION_TWEAK
+    '.', SIMULATE_VERSION_TWEAK,
+#   endif
+#  endif
+# endif
+  ']','\0'};
+#endif
+
+/* Construct the string literal in pieces to prevent the source from
+   getting matched.  Store it in a pointer rather than an array
+   because some compilers will just produce instructions to fill the
+   array rather than assigning a pointer to a static array.  */
+char const* info_platform = "INFO" ":" "platform[" PLATFORM_ID "]";
+char const* info_arch = "INFO" ":" "arch[" ARCHITECTURE_ID "]";
+
+
+
+
+#if defined(__INTEL_COMPILER) && defined(_MSVC_LANG) && _MSVC_LANG < 201403L
+#  if defined(__INTEL_CXX11_MODE__)
+#    if defined(__cpp_aggregate_nsdmi)
+#      define CXX_STD 201402L
+#    else
+#      define CXX_STD 201103L
+#    endif
+#  else
+#    define CXX_STD 199711L
+#  endif
+#elif defined(_MSC_VER) && defined(_MSVC_LANG)
+#  define CXX_STD _MSVC_LANG
+#else
+#  define CXX_STD __cplusplus
+#endif
+
+const char* info_language_dialect_default = "INFO" ":" "dialect_default["
+#if CXX_STD > 201703L
+  "20"
+#elif CXX_STD >= 201703L
+  "17"
+#elif CXX_STD >= 201402L
+  "14"
+#elif CXX_STD >= 201103L
+  "11"
+#else
+  "98"
+#endif
+"]";
+
+/*--------------------------------------------------------------------------*/
+
+int main(int argc, char* argv[])
+{
+  int require = 0;
+  require += info_compiler[argc];
+  require += info_platform[argc];
+#ifdef COMPILER_VERSION_MAJOR
+  require += info_version[argc];
+#endif
+#ifdef COMPILER_VERSION_INTERNAL
+  require += info_version_internal[argc];
+#endif
+#ifdef SIMULATE_ID
+  require += info_simulate[argc];
+#endif
+#ifdef SIMULATE_VERSION_MAJOR
+  require += info_simulate_version[argc];
+#endif
+#if defined(__CRAYXE) || defined(__CRAYXC)
+  require += info_cray[argc];
+#endif
+  require += info_language_dialect_default[argc];
+  (void)argv;
+  return require;
+}
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+set(CMAKE_RELATIVE_PATH_TOP_SOURCE "/home/huchen/FAISS/faiss")
+set(CMAKE_RELATIVE_PATH_TOP_BINARY "/home/huchen/FAISS/faiss/build")
+
+# Force unix paths in dependencies.
+set(CMAKE_FORCE_UNIX_PATHS 1)
+
+
+# The C and CXX include file regular expressions for this directory.
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+set(CMAKE_C_INCLUDE_REGEX_COMPLAIN "^$")
+set(CMAKE_CXX_INCLUDE_REGEX_SCAN ${CMAKE_C_INCLUDE_REGEX_SCAN})
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+
+Run Build Command(s):/opt/rh/devtoolset-7/root/usr/bin/gmake cmTC_4be7e/fast && /opt/rh/devtoolset-7/root/usr/bin/gmake  -f CMakeFiles/cmTC_4be7e.dir/build.make CMakeFiles/cmTC_4be7e.dir/build
+gmake[1]: Entering directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+Building CXX object CMakeFiles/cmTC_4be7e.dir/OpenMPCheckVersion.cpp.o
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+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:6:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/100000)%10)),
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+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:7:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/10000)%10)),
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+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:8:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/1000)%10)),
+                                     ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:9:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/100)%10)),
+                                     ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:10:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/10)%10)),
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+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:11:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/1)%10)),
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+gmake[1]: *** [CMakeFiles/cmTC_4be7e.dir/build.make:86: CMakeFiles/cmTC_4be7e.dir/OpenMPCheckVersion.cpp.o] Error 1
+gmake[1]: Leaving directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+gmake: *** [Makefile:141: cmTC_4be7e/fast] Error 2
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+
+Performing C++ SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output:
+Change Dir: /home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp
+
+Run Build Command(s):/opt/rh/devtoolset-7/root/usr/bin/gmake cmTC_e2e66/fast && /opt/rh/devtoolset-7/root/usr/bin/gmake  -f CMakeFiles/cmTC_e2e66.dir/build.make CMakeFiles/cmTC_e2e66.dir/build
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+CMakeFiles/cmTC_e2e66.dir/src.cxx.o: In function `main':
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+gmake[1]: Leaving directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+gmake: *** [Makefile:141: cmTC_e2e66/fast] Error 2
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+
+Source file was:
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+void* test_func(void* data)
+{
+  return data;
+}
+
+int main(void)
+{
+  pthread_t thread;
+  pthread_create(&thread, NULL, test_func, NULL);
+  pthread_detach(thread);
+  pthread_cancel(thread);
+  pthread_join(thread, NULL);
+  pthread_atfork(NULL, NULL, NULL);
+  pthread_exit(NULL);
+
+  return 0;
+}
+
+Determining if the function pthread_create exists in the pthreads failed with the following output:
+Change Dir: /home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp
+
+Run Build Command(s):/opt/rh/devtoolset-7/root/usr/bin/gmake cmTC_6b912/fast && /opt/rh/devtoolset-7/root/usr/bin/gmake  -f CMakeFiles/cmTC_6b912.dir/build.make CMakeFiles/cmTC_6b912.dir/build
+gmake[1]: Entering directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+Building CXX object CMakeFiles/cmTC_6b912.dir/CheckFunctionExists.cxx.o
+/opt/dtk-21.04/bin/hipcc    -DCHECK_FUNCTION_EXISTS=pthread_create   -std=gnu++11 -o CMakeFiles/cmTC_6b912.dir/CheckFunctionExists.cxx.o -c /home/huchen/FAISS/faiss/build/CMakeFiles/CheckLibraryExists/CheckFunctionExists.cxx
+/home/huchen/FAISS/faiss/build/CMakeFiles/CheckLibraryExists/CheckFunctionExists.cxx:7:3: error: functions that differ only in their return type cannot be overloaded
+  CHECK_FUNCTION_EXISTS(void);
+  ^
+<command line>:3:31: note: expanded from here
+#define CHECK_FUNCTION_EXISTS pthread_create
+                              ^
+/usr/include/pthread.h:235:12: note: previous declaration is here
+extern int pthread_create (pthread_t *__restrict __newthread,
+       ~~~ ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/CheckLibraryExists/CheckFunctionExists.cxx:17:3: error: no matching function for call to 'pthread_create'
+  CHECK_FUNCTION_EXISTS();
+  ^~~~~~~~~~~~~~~~~~~~~
+<command line>:3:31: note: expanded from here
+#define CHECK_FUNCTION_EXISTS pthread_create
+                              ^~~~~~~~~~~~~~
+/usr/include/pthread.h:235:12: note: candidate function not viable: requires 4 arguments, but 0 were provided
+extern int pthread_create (pthread_t *__restrict __newthread,
+           ^
+2 errors generated when compiling for gfx900.
+gmake[1]: *** [CMakeFiles/cmTC_6b912.dir/build.make:86: CMakeFiles/cmTC_6b912.dir/CheckFunctionExists.cxx.o] Error 1
+gmake[1]: Leaving directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+gmake: *** [Makefile:141: cmTC_6b912/fast] Error 2
+
+
+
+Determining if the function pthread_create exists in the pthread failed with the following output:
+Change Dir: /home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp
+
+Run Build Command(s):/opt/rh/devtoolset-7/root/usr/bin/gmake cmTC_d2507/fast && /opt/rh/devtoolset-7/root/usr/bin/gmake  -f CMakeFiles/cmTC_d2507.dir/build.make CMakeFiles/cmTC_d2507.dir/build
+gmake[1]: Entering directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+Building CXX object CMakeFiles/cmTC_d2507.dir/CheckFunctionExists.cxx.o
+/opt/dtk-21.04/bin/hipcc    -DCHECK_FUNCTION_EXISTS=pthread_create   -std=gnu++11 -o CMakeFiles/cmTC_d2507.dir/CheckFunctionExists.cxx.o -c /home/huchen/FAISS/faiss/build/CMakeFiles/CheckLibraryExists/CheckFunctionExists.cxx
+/home/huchen/FAISS/faiss/build/CMakeFiles/CheckLibraryExists/CheckFunctionExists.cxx:7:3: error: functions that differ only in their return type cannot be overloaded
+  CHECK_FUNCTION_EXISTS(void);
+  ^
+<command line>:3:31: note: expanded from here
+#define CHECK_FUNCTION_EXISTS pthread_create
+                              ^
+/usr/include/pthread.h:235:12: note: previous declaration is here
+extern int pthread_create (pthread_t *__restrict __newthread,
+       ~~~ ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/CheckLibraryExists/CheckFunctionExists.cxx:17:3: error: no matching function for call to 'pthread_create'
+  CHECK_FUNCTION_EXISTS();
+  ^~~~~~~~~~~~~~~~~~~~~
+<command line>:3:31: note: expanded from here
+#define CHECK_FUNCTION_EXISTS pthread_create
+                              ^~~~~~~~~~~~~~
+/usr/include/pthread.h:235:12: note: candidate function not viable: requires 4 arguments, but 0 were provided
+extern int pthread_create (pthread_t *__restrict __newthread,
+           ^
+2 errors generated when compiling for gfx900.
+gmake[1]: *** [CMakeFiles/cmTC_d2507.dir/build.make:86: CMakeFiles/cmTC_d2507.dir/CheckFunctionExists.cxx.o] Error 1
+gmake[1]: Leaving directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+gmake: *** [Makefile:141: cmTC_d2507/fast] Error 2
+
+
+
+Detecting CXX OpenMP version failed with the following output:
+Change Dir: /home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp
+
+Run Build Command(s):/opt/rh/devtoolset-7/root/usr/bin/gmake cmTC_45fd1/fast && /opt/rh/devtoolset-7/root/usr/bin/gmake  -f CMakeFiles/cmTC_45fd1.dir/build.make CMakeFiles/cmTC_45fd1.dir/build
+gmake[1]: Entering directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+Building CXX object CMakeFiles/cmTC_45fd1.dir/OpenMPCheckVersion.cpp.o
+/opt/dtk-21.04/bin/hipcc    -fopenmp=libomp   -std=gnu++11 -o CMakeFiles/cmTC_45fd1.dir/OpenMPCheckVersion.cpp.o -c /home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:6:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/100000)%10)),
+                                     ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:7:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/10000)%10)),
+                                     ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:8:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/1000)%10)),
+                                     ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:9:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/100)%10)),
+                                     ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:10:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/10)%10)),
+                                     ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:11:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/1)%10)),
+                                     ^
+6 errors generated when compiling for gfx900.
+gmake[1]: *** [CMakeFiles/cmTC_45fd1.dir/build.make:86: CMakeFiles/cmTC_45fd1.dir/OpenMPCheckVersion.cpp.o] Error 1
+gmake[1]: Leaving directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+gmake: *** [Makefile:141: cmTC_45fd1/fast] Error 2
+
+
+
+Detecting CXX OpenMP version failed with the following output:
+Change Dir: /home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp
+
+Run Build Command(s):/opt/rh/devtoolset-7/root/usr/bin/gmake cmTC_bc418/fast && /opt/rh/devtoolset-7/root/usr/bin/gmake  -f CMakeFiles/cmTC_bc418.dir/build.make CMakeFiles/cmTC_bc418.dir/build
+gmake[1]: Entering directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+Building CXX object CMakeFiles/cmTC_bc418.dir/OpenMPCheckVersion.cpp.o
+/opt/dtk-21.04/bin/hipcc    -fopenmp=libomp   -std=gnu++11 -o CMakeFiles/cmTC_bc418.dir/OpenMPCheckVersion.cpp.o -c /home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:6:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/100000)%10)),
+                                     ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:7:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/10000)%10)),
+                                     ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:8:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/1000)%10)),
+                                     ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:9:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/100)%10)),
+                                     ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:10:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/10)%10)),
+                                     ^
+/home/huchen/FAISS/faiss/build/CMakeFiles/FindOpenMP/OpenMPCheckVersion.cpp:11:38: error: use of undeclared identifier '_OPENMP'
+                            ('0' + ((_OPENMP/1)%10)),
+                                     ^
+6 errors generated when compiling for gfx900.
+gmake[1]: *** [CMakeFiles/cmTC_bc418.dir/build.make:86: CMakeFiles/cmTC_bc418.dir/OpenMPCheckVersion.cpp.o] Error 1
+gmake[1]: Leaving directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+gmake: *** [Makefile:141: cmTC_bc418/fast] Error 2
+
+
+
diff --git a/build/CMakeFiles/CMakeOutput.log b/build/CMakeFiles/CMakeOutput.log
new file mode 100644
index 0000000000000000000000000000000000000000..b9468a7532108a3b60188a29532c1d05ade4eb54
--- /dev/null
+++ b/build/CMakeFiles/CMakeOutput.log
@@ -0,0 +1,1018 @@
+The system is: Linux - 3.10.0-957.el7.x86_64 - x86_64
+Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" succeeded.
+Compiler: /opt/dtk-21.04/bin/hipcc 
+Build flags: 
+Id flags:  
+
+The output was:
+0
+
+
+Compilation of the CXX compiler identification source "CMakeCXXCompilerId.cpp" produced "a.out"
+
+The CXX compiler identification is Clang, found in "/home/huchen/FAISS/faiss/build/CMakeFiles/3.17.5/CompilerIdCXX/a.out"
+
+Determining if the CXX compiler works passed with the following output:
+Change Dir: /home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp
+
+Run Build Command(s):/opt/rh/devtoolset-7/root/usr/bin/gmake cmTC_53fb5/fast && /opt/rh/devtoolset-7/root/usr/bin/gmake  -f CMakeFiles/cmTC_53fb5.dir/build.make CMakeFiles/cmTC_53fb5.dir/build
+gmake[1]: Entering directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+Building CXX object CMakeFiles/cmTC_53fb5.dir/testCXXCompiler.cxx.o
+/opt/dtk-21.04/bin/hipcc     -o CMakeFiles/cmTC_53fb5.dir/testCXXCompiler.cxx.o -c /home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
+Linking CXX executable cmTC_53fb5
+/usr/bin/cmake3 -E cmake_link_script CMakeFiles/cmTC_53fb5.dir/link.txt --verbose=1
+/opt/dtk-21.04/bin/hipcc     -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib  CMakeFiles/cmTC_53fb5.dir/testCXXCompiler.cxx.o  -o cmTC_53fb5 
+gmake[1]: Leaving directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+
+
+
+Detecting CXX compiler ABI info compiled with the following output:
+Change Dir: /home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp
+
+Run Build Command(s):/opt/rh/devtoolset-7/root/usr/bin/gmake cmTC_c8be4/fast && /opt/rh/devtoolset-7/root/usr/bin/gmake  -f CMakeFiles/cmTC_c8be4.dir/build.make CMakeFiles/cmTC_c8be4.dir/build
+gmake[1]: Entering directory '/home/huchen/FAISS/faiss/build/CMakeFiles/CMakeTmp'
+Building CXX object CMakeFiles/cmTC_c8be4.dir/CMakeCXXCompilerABI.cpp.o
+/opt/dtk-21.04/bin/hipcc    -v -o CMakeFiles/cmTC_c8be4.dir/CMakeCXXCompilerABI.cpp.o -c /usr/share/cmake3/Modules/CMakeCXXCompilerABI.cpp
+clang version 12.0.0 (http://10.0.100.3/dcutoolkit/driverruntime/llvm-project.git f816f1d344d7e4e0e21fc9d134c1b82e12e972f5)
+Target: x86_64-unknown-linux-gnu
+Thread model: posix
+InstalledDir: /opt/dtk-21.04/llvm/bin
+Found candidate GCC installation: /opt/rh/devtoolset-7/root/usr/lib/gcc/x86_64-redhat-linux/7
+Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.8.2
+Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.8.5
+Selected GCC installation: /opt/rh/devtoolset-7/root/usr/lib/gcc/x86_64-redhat-linux/7
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+Candidate multilib: 32;@m32
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+ignoring duplicate directory "/usr/include"
+ignoring duplicate directory "/usr/local/include"
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+#include <...> search starts here:
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+ /usr/local/include
+ /opt/dtk-21.04/llvm/lib/clang/12.0.0/include
+ /usr/include
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+Source file was:
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+Run Build Command(s):/opt/rh/devtoolset-7/root/usr/bin/gmake cmTC_47e39/fast && /opt/rh/devtoolset-7/root/usr/bin/gmake  -f CMakeFiles/cmTC_47e39.dir/build.make CMakeFiles/cmTC_47e39.dir/build
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+Target: x86_64-unknown-linux-gnu
+Thread model: posix
+InstalledDir: /opt/dtk-21.04/llvm/bin
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new file mode 100644
index 0000000000000000000000000000000000000000..d497475f1516f97c29953398c77cf9a72e73b6e3
--- /dev/null
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@@ -0,0 +1,308 @@
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+	@$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR) --cyan "Install the project..."
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+
+# target to build an object file
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+
+# target to preprocess a source file
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+.PHONY : src/gtest_main.cc.s
+
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+	@echo "The following are some of the valid targets for this Makefile:"
+	@echo "... all (the default if no target is provided)"
+	@echo "... clean"
+	@echo "... depend"
+	@echo "... edit_cache"
+	@echo "... install"
+	@echo "... install/local"
+	@echo "... install/strip"
+	@echo "... list_install_components"
+	@echo "... rebuild_cache"
+	@echo "... test"
+	@echo "... gtest"
+	@echo "... gtest_main"
+	@echo "... src/gtest-all.o"
+	@echo "... src/gtest-all.i"
+	@echo "... src/gtest-all.s"
+	@echo "... src/gtest_main.o"
+	@echo "... src/gtest_main.i"
+	@echo "... src/gtest_main.s"
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+
+
+
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+
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diff --git a/build/_deps/googletest-build/googletest/cmake_install.cmake b/build/_deps/googletest-build/googletest/cmake_install.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..203f4cc91ac4086f6e005d63340dbfedaf7a58fa
--- /dev/null
+++ b/build/_deps/googletest-build/googletest/cmake_install.cmake
@@ -0,0 +1,39 @@
+# Install script for directory: /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest
+
+# Set the install prefix
+if(NOT DEFINED CMAKE_INSTALL_PREFIX)
+  set(CMAKE_INSTALL_PREFIX "/usr/local")
+endif()
+string(REGEX REPLACE "/$" "" CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
+
+# Set the install configuration name.
+if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME)
+  if(BUILD_TYPE)
+    string(REGEX REPLACE "^[^A-Za-z0-9_]+" ""
+           CMAKE_INSTALL_CONFIG_NAME "${BUILD_TYPE}")
+  else()
+    set(CMAKE_INSTALL_CONFIG_NAME "")
+  endif()
+  message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"")
+endif()
+
+# Set the component getting installed.
+if(NOT CMAKE_INSTALL_COMPONENT)
+  if(COMPONENT)
+    message(STATUS "Install component: \"${COMPONENT}\"")
+    set(CMAKE_INSTALL_COMPONENT "${COMPONENT}")
+  else()
+    set(CMAKE_INSTALL_COMPONENT)
+  endif()
+endif()
+
+# Install shared libraries without execute permission?
+if(NOT DEFINED CMAKE_INSTALL_SO_NO_EXE)
+  set(CMAKE_INSTALL_SO_NO_EXE "0")
+endif()
+
+# Is this installation the result of a crosscompile?
+if(NOT DEFINED CMAKE_CROSSCOMPILING)
+  set(CMAKE_CROSSCOMPILING "FALSE")
+endif()
+
diff --git a/build/_deps/googletest-src/.clang-format b/build/_deps/googletest-src/.clang-format
new file mode 100644
index 0000000000000000000000000000000000000000..5b9bfe6d224232981ada90cee232c716afbdf09d
--- /dev/null
+++ b/build/_deps/googletest-src/.clang-format
@@ -0,0 +1,4 @@
+# Run manually to reformat a file:
+# clang-format -i --style=file <file>
+Language:        Cpp
+BasedOnStyle:  Google
diff --git a/build/_deps/googletest-src/.gitignore b/build/_deps/googletest-src/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..f08cb72a33cd199478f41be1bd487f916330472c
--- /dev/null
+++ b/build/_deps/googletest-src/.gitignore
@@ -0,0 +1,84 @@
+# Ignore CI build directory
+build/
+xcuserdata
+cmake-build-debug/
+.idea/
+bazel-bin
+bazel-genfiles
+bazel-googletest
+bazel-out
+bazel-testlogs
+# python
+*.pyc
+
+# Visual Studio files
+.vs
+*.sdf
+*.opensdf
+*.VC.opendb
+*.suo
+*.user
+_ReSharper.Caches/
+Win32-Debug/
+Win32-Release/
+x64-Debug/
+x64-Release/
+
+# Ignore autoconf / automake files
+Makefile.in
+aclocal.m4
+configure
+build-aux/
+autom4te.cache/
+googletest/m4/libtool.m4
+googletest/m4/ltoptions.m4
+googletest/m4/ltsugar.m4
+googletest/m4/ltversion.m4
+googletest/m4/lt~obsolete.m4
+googlemock/m4
+
+# Ignore generated directories.
+googlemock/fused-src/
+googletest/fused-src/
+
+# macOS files
+.DS_Store
+googletest/.DS_Store
+googletest/xcode/.DS_Store
+
+# Ignore cmake generated directories and files.
+CMakeFiles
+CTestTestfile.cmake
+Makefile
+cmake_install.cmake
+googlemock/CMakeFiles
+googlemock/CTestTestfile.cmake
+googlemock/Makefile
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+/googlemock/RUN_TESTS.vcxproj.filters
+/googlemock/RUN_TESTS.vcxproj
+/googlemock/INSTALL.vcxproj.filters
+/googlemock/INSTALL.vcxproj
+/googlemock/gmock_main.vcxproj.filters
+/googlemock/gmock_main.vcxproj
+/googlemock/gmock.vcxproj.filters
+/googlemock/gmock.vcxproj
+/googlemock/gmock.sln
+/googlemock/ALL_BUILD.vcxproj.filters
+/googlemock/ALL_BUILD.vcxproj
+/lib
+/Win32
+/ZERO_CHECK.vcxproj.filters
+/ZERO_CHECK.vcxproj
+/RUN_TESTS.vcxproj.filters
+/RUN_TESTS.vcxproj
+/INSTALL.vcxproj.filters
+/INSTALL.vcxproj
+/googletest-distribution.sln
+/CMakeCache.txt
+/ALL_BUILD.vcxproj.filters
+/ALL_BUILD.vcxproj
diff --git a/build/_deps/googletest-src/.travis.yml b/build/_deps/googletest-src/.travis.yml
new file mode 100644
index 0000000000000000000000000000000000000000..04b51ddec9185508843d3530d6ae585cfa7c44b7
--- /dev/null
+++ b/build/_deps/googletest-src/.travis.yml
@@ -0,0 +1,73 @@
+# Build matrix / environment variable are explained on:
+# https://docs.travis-ci.com/user/customizing-the-build/
+# This file can be validated on:
+# http://lint.travis-ci.org/
+
+language: cpp
+
+# Define the matrix explicitly, manually expanding the combinations of (os, compiler, env).
+# It is more tedious, but grants us far more flexibility.
+matrix:
+  include:
+    - os: linux
+      before_install: chmod -R +x ./ci/*platformio.sh
+      install: ./ci/install-platformio.sh
+      script: ./ci/build-platformio.sh
+    - os: linux
+      dist: xenial
+      compiler: gcc
+      install: ./ci/install-linux.sh && ./ci/log-config.sh
+      script: ./ci/build-linux-bazel.sh
+    - os: linux
+      dist: xenial
+      compiler: clang
+      install: ./ci/install-linux.sh && ./ci/log-config.sh
+      script: ./ci/build-linux-bazel.sh
+    - os: linux
+      compiler: gcc
+      env: BUILD_TYPE=Debug VERBOSE=1 CXX_FLAGS=-std=c++11
+    - os: linux
+      compiler: clang
+      env: BUILD_TYPE=Release VERBOSE=1 CXX_FLAGS=-std=c++11 -Wgnu-zero-variadic-macro-arguments
+    - os: linux
+      compiler: clang
+      env: BUILD_TYPE=Release VERBOSE=1 CXX_FLAGS=-std=c++11 NO_EXCEPTION=ON NO_RTTI=ON COMPILER_IS_GNUCXX=ON
+    - os: osx
+      compiler: gcc
+      env: BUILD_TYPE=Release VERBOSE=1 CXX_FLAGS=-std=c++11 HOMEBREW_LOGS=~/homebrew-logs HOMEBREW_TEMP=~/homebrew-temp
+    - os: osx
+      compiler: clang
+      env: BUILD_TYPE=Release VERBOSE=1 CXX_FLAGS=-std=c++11 HOMEBREW_LOGS=~/homebrew-logs HOMEBREW_TEMP=~/homebrew-temp
+
+# These are the install and build (script) phases for the most common entries in the matrix.  They could be included
+# in each entry in the matrix, but that is just repetitive.
+install:
+  - ./ci/install-${TRAVIS_OS_NAME}.sh
+  - . ./ci/env-${TRAVIS_OS_NAME}.sh
+  - ./ci/log-config.sh
+
+script: ./ci/travis.sh
+
+# This section installs the necessary dependencies.
+addons:
+  apt:
+    # List of whitelisted in travis packages for ubuntu-precise can be found here:
+    #   https://github.com/travis-ci/apt-package-whitelist/blob/master/ubuntu-precise
+    # List of whitelisted in travis apt-sources:
+    #   https://github.com/travis-ci/apt-source-whitelist/blob/master/ubuntu.json
+    sources:
+    - ubuntu-toolchain-r-test
+    - llvm-toolchain-precise-3.9
+    packages:
+    - g++-4.9
+    - clang-3.9
+    update: true
+  homebrew:
+    packages:
+    - ccache
+    - gcc@4.9
+    - llvm@4
+    update: true
+
+notifications:
+  email: false
diff --git a/build/_deps/googletest-src/BUILD.bazel b/build/_deps/googletest-src/BUILD.bazel
new file mode 100644
index 0000000000000000000000000000000000000000..9b48aee530811e6744bf40eea40cb48312110847
--- /dev/null
+++ b/build/_deps/googletest-src/BUILD.bazel
@@ -0,0 +1,179 @@
+# Copyright 2017 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+#   Bazel Build for Google C++ Testing Framework(Google Test)
+
+load("@rules_cc//cc:defs.bzl", "cc_library", "cc_test")
+
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+config_setting(
+    name = "windows",
+    constraint_values = ["@bazel_tools//platforms:windows"],
+)
+
+config_setting(
+    name = "has_absl",
+    values = {"define": "absl=1"},
+)
+
+# Library that defines the FRIEND_TEST macro.
+cc_library(
+    name = "gtest_prod",
+    hdrs = ["googletest/include/gtest/gtest_prod.h"],
+    includes = ["googletest/include"],
+)
+
+# Google Test including Google Mock
+cc_library(
+    name = "gtest",
+    srcs = glob(
+        include = [
+            "googletest/src/*.cc",
+            "googletest/src/*.h",
+            "googletest/include/gtest/**/*.h",
+            "googlemock/src/*.cc",
+            "googlemock/include/gmock/**/*.h",
+        ],
+        exclude = [
+            "googletest/src/gtest-all.cc",
+            "googletest/src/gtest_main.cc",
+            "googlemock/src/gmock-all.cc",
+            "googlemock/src/gmock_main.cc",
+        ],
+    ),
+    hdrs = glob([
+        "googletest/include/gtest/*.h",
+        "googlemock/include/gmock/*.h",
+    ]),
+    copts = select({
+        ":windows": [],
+        "//conditions:default": ["-pthread"],
+    }),
+    defines = select({
+        ":has_absl": ["GTEST_HAS_ABSL=1"],
+        "//conditions:default": [],
+    }),
+    features = select({
+        ":windows": ["windows_export_all_symbols"],
+        "//conditions:default": [],
+    }),
+    includes = [
+        "googlemock",
+        "googlemock/include",
+        "googletest",
+        "googletest/include",
+    ],
+    linkopts = select({
+        ":windows": [],
+        "//conditions:default": ["-pthread"],
+    }),
+    deps = select({
+        ":has_absl": [
+            "@com_google_absl//absl/debugging:failure_signal_handler",
+            "@com_google_absl//absl/debugging:stacktrace",
+            "@com_google_absl//absl/debugging:symbolize",
+            "@com_google_absl//absl/strings",
+            "@com_google_absl//absl/types:optional",
+            "@com_google_absl//absl/types:variant",
+        ],
+        "//conditions:default": [],
+    }),
+)
+
+cc_library(
+    name = "gtest_main",
+    srcs = ["googlemock/src/gmock_main.cc"],
+    features = select({
+        ":windows": ["windows_export_all_symbols"],
+        "//conditions:default": [],
+    }),
+    deps = [":gtest"],
+)
+
+# The following rules build samples of how to use gTest.
+cc_library(
+    name = "gtest_sample_lib",
+    srcs = [
+        "googletest/samples/sample1.cc",
+        "googletest/samples/sample2.cc",
+        "googletest/samples/sample4.cc",
+    ],
+    hdrs = [
+        "googletest/samples/prime_tables.h",
+        "googletest/samples/sample1.h",
+        "googletest/samples/sample2.h",
+        "googletest/samples/sample3-inl.h",
+        "googletest/samples/sample4.h",
+    ],
+    features = select({
+        ":windows": ["windows_export_all_symbols"],
+        "//conditions:default": [],
+    }),
+)
+
+cc_test(
+    name = "gtest_samples",
+    size = "small",
+    # All Samples except:
+    #   sample9 (main)
+    #   sample10 (main and takes a command line option and needs to be separate)
+    srcs = [
+        "googletest/samples/sample1_unittest.cc",
+        "googletest/samples/sample2_unittest.cc",
+        "googletest/samples/sample3_unittest.cc",
+        "googletest/samples/sample4_unittest.cc",
+        "googletest/samples/sample5_unittest.cc",
+        "googletest/samples/sample6_unittest.cc",
+        "googletest/samples/sample7_unittest.cc",
+        "googletest/samples/sample8_unittest.cc",
+    ],
+    linkstatic = 0,
+    deps = [
+        "gtest_sample_lib",
+        ":gtest_main",
+    ],
+)
+
+cc_test(
+    name = "sample9_unittest",
+    size = "small",
+    srcs = ["googletest/samples/sample9_unittest.cc"],
+    deps = [":gtest"],
+)
+
+cc_test(
+    name = "sample10_unittest",
+    size = "small",
+    srcs = ["googletest/samples/sample10_unittest.cc"],
+    deps = [":gtest"],
+)
diff --git a/build/_deps/googletest-src/CMakeLists.txt b/build/_deps/googletest-src/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f11bbb521e387a19e060be596d8776b94be0d68c
--- /dev/null
+++ b/build/_deps/googletest-src/CMakeLists.txt
@@ -0,0 +1,36 @@
+# Note: CMake support is community-based. The maintainers do not use CMake
+# internally.
+
+cmake_minimum_required(VERSION 2.8.8)
+
+if (POLICY CMP0048)
+  cmake_policy(SET CMP0048 NEW)
+endif (POLICY CMP0048)
+
+project(googletest-distribution)
+set(GOOGLETEST_VERSION 1.10.0)
+
+if (CMAKE_VERSION VERSION_LESS "3.1")
+  add_definitions(-std=c++11)
+else()
+  set(CMAKE_CXX_STANDARD 11)
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
+  if(NOT CYGWIN)
+    set(CMAKE_CXX_EXTENSIONS OFF)
+  endif()
+endif()
+
+enable_testing()
+
+include(CMakeDependentOption)
+include(GNUInstallDirs)
+
+#Note that googlemock target already builds googletest
+option(BUILD_GMOCK "Builds the googlemock subproject" ON)
+option(INSTALL_GTEST "Enable installation of googletest. (Projects embedding googletest may want to turn this OFF.)" ON)
+
+if(BUILD_GMOCK)
+  add_subdirectory( googlemock )
+else()
+  add_subdirectory( googletest )
+endif()
diff --git a/build/_deps/googletest-src/CONTRIBUTING.md b/build/_deps/googletest-src/CONTRIBUTING.md
new file mode 100644
index 0000000000000000000000000000000000000000..30c8d8900b6d830839271bbf71c58df0148c7f17
--- /dev/null
+++ b/build/_deps/googletest-src/CONTRIBUTING.md
@@ -0,0 +1,142 @@
+# How to become a contributor and submit your own code
+
+## Contributor License Agreements
+
+We'd love to accept your patches! Before we can take them, we have to jump a
+couple of legal hurdles.
+
+Please fill out either the individual or corporate Contributor License Agreement
+(CLA).
+
+*   If you are an individual writing original source code and you're sure you
+    own the intellectual property, then you'll need to sign an
+    [individual CLA](https://developers.google.com/open-source/cla/individual).
+*   If you work for a company that wants to allow you to contribute your work,
+    then you'll need to sign a
+    [corporate CLA](https://developers.google.com/open-source/cla/corporate).
+
+Follow either of the two links above to access the appropriate CLA and
+instructions for how to sign and return it. Once we receive it, we'll be able to
+accept your pull requests.
+
+## Are you a Googler?
+
+If you are a Googler, please make an attempt to submit an internal change rather
+than a GitHub Pull Request. If you are not able to submit an internal change a
+PR is acceptable as an alternative.
+
+## Contributing A Patch
+
+1.  Submit an issue describing your proposed change to the
+    [issue tracker](https://github.com/google/googletest).
+2.  Please don't mix more than one logical change per submittal, because it
+    makes the history hard to follow. If you want to make a change that doesn't
+    have a corresponding issue in the issue tracker, please create one.
+3.  Also, coordinate with team members that are listed on the issue in question.
+    This ensures that work isn't being duplicated and communicating your plan
+    early also generally leads to better patches.
+4.  If your proposed change is accepted, and you haven't already done so, sign a
+    Contributor License Agreement (see details above).
+5.  Fork the desired repo, develop and test your code changes.
+6.  Ensure that your code adheres to the existing style in the sample to which
+    you are contributing.
+7.  Ensure that your code has an appropriate set of unit tests which all pass.
+8.  Submit a pull request.
+
+## The Google Test and Google Mock Communities
+
+The Google Test community exists primarily through the
+[discussion group](http://groups.google.com/group/googletestframework) and the
+GitHub repository. Likewise, the Google Mock community exists primarily through
+their own [discussion group](http://groups.google.com/group/googlemock). You are
+definitely encouraged to contribute to the discussion and you can also help us
+to keep the effectiveness of the group high by following and promoting the
+guidelines listed here.
+
+### Please Be Friendly
+
+Showing courtesy and respect to others is a vital part of the Google culture,
+and we strongly encourage everyone participating in Google Test development to
+join us in accepting nothing less. Of course, being courteous is not the same as
+failing to constructively disagree with each other, but it does mean that we
+should be respectful of each other when enumerating the 42 technical reasons
+that a particular proposal may not be the best choice. There's never a reason to
+be antagonistic or dismissive toward anyone who is sincerely trying to
+contribute to a discussion.
+
+Sure, C++ testing is serious business and all that, but it's also a lot of fun.
+Let's keep it that way. Let's strive to be one of the friendliest communities in
+all of open source.
+
+As always, discuss Google Test in the official GoogleTest discussion group. You
+don't have to actually submit code in order to sign up. Your participation
+itself is a valuable contribution.
+
+## Style
+
+To keep the source consistent, readable, diffable and easy to merge, we use a
+fairly rigid coding style, as defined by the
+[google-styleguide](https://github.com/google/styleguide) project. All patches
+will be expected to conform to the style outlined
+[here](https://google.github.io/styleguide/cppguide.html). Use
+[.clang-format](https://github.com/google/googletest/blob/master/.clang-format)
+to check your formatting
+
+## Requirements for Contributors
+
+If you plan to contribute a patch, you need to build Google Test, Google Mock,
+and their own tests from a git checkout, which has further requirements:
+
+*   [Python](https://www.python.org/) v2.3 or newer (for running some of the
+    tests and re-generating certain source files from templates)
+*   [CMake](https://cmake.org/) v2.6.4 or newer
+
+## Developing Google Test and Google Mock
+
+This section discusses how to make your own changes to the Google Test project.
+
+### Testing Google Test and Google Mock Themselves
+
+To make sure your changes work as intended and don't break existing
+functionality, you'll want to compile and run Google Test and GoogleMock's own
+tests. For that you can use CMake:
+
+    mkdir mybuild
+    cd mybuild
+    cmake -Dgtest_build_tests=ON -Dgmock_build_tests=ON ${GTEST_REPO_DIR}
+
+To choose between building only Google Test or Google Mock, you may modify your
+cmake command to be one of each
+
+    cmake -Dgtest_build_tests=ON ${GTEST_DIR} # sets up Google Test tests
+    cmake -Dgmock_build_tests=ON ${GMOCK_DIR} # sets up Google Mock tests
+
+Make sure you have Python installed, as some of Google Test's tests are written
+in Python. If the cmake command complains about not being able to find Python
+(`Could NOT find PythonInterp (missing: PYTHON_EXECUTABLE)`), try telling it
+explicitly where your Python executable can be found:
+
+    cmake -DPYTHON_EXECUTABLE=path/to/python ...
+
+Next, you can build Google Test and / or Google Mock and all desired tests. On
+\*nix, this is usually done by
+
+    make
+
+To run the tests, do
+
+    make test
+
+All tests should pass.
+
+### Regenerating Source Files
+
+Some of Google Test's source files are generated from templates (not in the C++
+sense) using a script. For example, the file
+include/gtest/internal/gtest-type-util.h.pump is used to generate
+gtest-type-util.h in the same directory.
+
+You don't need to worry about regenerating the source files unless you need to
+modify them. You would then modify the corresponding `.pump` files and run the
+'[pump.py](googletest/scripts/pump.py)' generator script. See the
+[Pump Manual](googletest/docs/pump_manual.md).
diff --git a/build/_deps/googletest-src/LICENSE b/build/_deps/googletest-src/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..1941a11f8ce94389160b458927a29ba217542818
--- /dev/null
+++ b/build/_deps/googletest-src/LICENSE
@@ -0,0 +1,28 @@
+Copyright 2008, Google Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+    * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/build/_deps/googletest-src/README.md b/build/_deps/googletest-src/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..5b417fa883fa3564c88c724b702e0069b62a6863
--- /dev/null
+++ b/build/_deps/googletest-src/README.md
@@ -0,0 +1,134 @@
+# Google Test
+
+#### OSS Builds Status:
+
+[![Build Status](https://api.travis-ci.org/google/googletest.svg?branch=master)](https://travis-ci.org/google/googletest)
+[![Build status](https://ci.appveyor.com/api/projects/status/4o38plt0xbo1ubc8/branch/master?svg=true)](https://ci.appveyor.com/project/GoogleTestAppVeyor/googletest/branch/master)
+
+### Future Plans
+
+#### 1.8.x Release:
+
+[the 1.8.x](https://github.com/google/googletest/releases/tag/release-1.8.1) is
+the last release that works with pre-C++11 compilers. The 1.8.x will not accept
+any requests for any new features and any bugfix requests will only be accepted
+if proven "critical"
+
+#### Post 1.8.x:
+
+On-going work to improve/cleanup/pay technical debt. When this work is completed
+there will be a 1.9.x tagged release
+
+#### Post 1.9.x
+
+Post 1.9.x googletest will follow
+[Abseil Live at Head philosophy](https://abseil.io/about/philosophy)
+
+## Welcome to **Google Test**, Google's C++ test framework!
+
+This repository is a merger of the formerly separate GoogleTest and GoogleMock
+projects. These were so closely related that it makes sense to maintain and
+release them together.
+
+Please subscribe to the mailing list at googletestframework@googlegroups.com for
+questions, discussions, and development.
+
+### Getting started:
+
+The information for **Google Test** is available in the
+[Google Test Primer](googletest/docs/primer.md) documentation.
+
+**Google Mock** is an extension to Google Test for writing and using C++ mock
+classes. See the separate [Google Mock documentation](googlemock/README.md).
+
+More detailed documentation for googletest is in its interior
+[googletest/README.md](googletest/README.md) file.
+
+## Features
+
+*   An [xUnit](https://en.wikipedia.org/wiki/XUnit) test framework.
+*   Test discovery.
+*   A rich set of assertions.
+*   User-defined assertions.
+*   Death tests.
+*   Fatal and non-fatal failures.
+*   Value-parameterized tests.
+*   Type-parameterized tests.
+*   Various options for running the tests.
+*   XML test report generation.
+
+## Platforms
+
+Google test has been used on a variety of platforms:
+
+*   Linux
+*   Mac OS X
+*   Windows
+*   Cygwin
+*   MinGW
+*   Windows Mobile
+*   Symbian
+*   PlatformIO
+
+## Who Is Using Google Test?
+
+In addition to many internal projects at Google, Google Test is also used by the
+following notable projects:
+
+*   The [Chromium projects](http://www.chromium.org/) (behind the Chrome browser
+    and Chrome OS).
+*   The [LLVM](http://llvm.org/) compiler.
+*   [Protocol Buffers](https://github.com/google/protobuf), Google's data
+    interchange format.
+*   The [OpenCV](http://opencv.org/) computer vision library.
+*   [tiny-dnn](https://github.com/tiny-dnn/tiny-dnn): header only,
+    dependency-free deep learning framework in C++11.
+
+## Related Open Source Projects
+
+[GTest Runner](https://github.com/nholthaus/gtest-runner) is a Qt5 based
+automated test-runner and Graphical User Interface with powerful features for
+Windows and Linux platforms.
+
+[Google Test UI](https://github.com/ospector/gtest-gbar) is test runner that
+runs your test binary, allows you to track its progress via a progress bar, and
+displays a list of test failures. Clicking on one shows failure text. Google
+Test UI is written in C#.
+
+[GTest TAP Listener](https://github.com/kinow/gtest-tap-listener) is an event
+listener for Google Test that implements the
+[TAP protocol](https://en.wikipedia.org/wiki/Test_Anything_Protocol) for test
+result output. If your test runner understands TAP, you may find it useful.
+
+[gtest-parallel](https://github.com/google/gtest-parallel) is a test runner that
+runs tests from your binary in parallel to provide significant speed-up.
+
+[GoogleTest Adapter](https://marketplace.visualstudio.com/items?itemName=DavidSchuldenfrei.gtest-adapter)
+is a VS Code extension allowing to view Google Tests in a tree view, and
+run/debug your tests.
+
+## Requirements
+
+Google Test is designed to have fairly minimal requirements to build and use
+with your projects, but there are some. If you notice any problems on your
+platform, please notify
+[googletestframework@googlegroups.com](https://groups.google.com/forum/#!forum/googletestframework).
+Patches for fixing them are welcome!
+
+### Build Requirements
+
+These are the base requirements to build and use Google Test from a source
+package:
+
+*   [Bazel](https://bazel.build/) or [CMake](https://cmake.org/). NOTE: Bazel is
+    the build system that googletest is using internally and tests against.
+    CMake is community-supported.
+
+*   a C++11-standard-compliant compiler
+
+## Contributing change
+
+Please read the [`CONTRIBUTING.md`](CONTRIBUTING.md) for details on how to
+contribute to this project.
+
+Happy testing!
diff --git a/build/_deps/googletest-src/WORKSPACE b/build/_deps/googletest-src/WORKSPACE
new file mode 100644
index 0000000000000000000000000000000000000000..2289bdb7e8f09335055c864fe3f013d786c04d32
--- /dev/null
+++ b/build/_deps/googletest-src/WORKSPACE
@@ -0,0 +1,23 @@
+workspace(name = "com_google_googletest")
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+# Abseil
+http_archive(
+     name = "com_google_absl",
+     urls = ["https://github.com/abseil/abseil-cpp/archive/master.zip"],
+     strip_prefix = "abseil-cpp-master",
+)
+
+http_archive(
+    name = "rules_cc",
+    strip_prefix = "rules_cc-master",
+    urls = ["https://github.com/bazelbuild/rules_cc/archive/master.zip"],
+)
+
+http_archive(
+    name = "rules_python",
+    strip_prefix = "rules_python-master",
+    urls = ["https://github.com/bazelbuild/rules_python/archive/master.zip"],
+)
+
diff --git a/build/_deps/googletest-src/appveyor.yml b/build/_deps/googletest-src/appveyor.yml
new file mode 100644
index 0000000000000000000000000000000000000000..a58b7687d70028beaac0154171523466ee84fd56
--- /dev/null
+++ b/build/_deps/googletest-src/appveyor.yml
@@ -0,0 +1,154 @@
+version: '{build}'
+
+os: Visual Studio 2015
+
+environment:
+  matrix:
+    - compiler: msvc-15-seh
+      generator: "Visual Studio 15 2017"
+      build_system: cmake
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+
+    - compiler: msvc-15-seh
+      generator: "Visual Studio 15 2017 Win64"
+      build_system: cmake
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      enabled_on_pr: yes
+
+    - compiler: msvc-15-seh
+      build_system: bazel
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      enabled_on_pr: yes
+
+    - compiler: msvc-14-seh
+      build_system: cmake
+      generator: "Visual Studio 14 2015"
+      enabled_on_pr: yes
+
+    - compiler: msvc-14-seh
+      build_system: cmake
+      generator: "Visual Studio 14 2015 Win64"
+
+    - compiler: gcc-6.3.0-posix
+      build_system: cmake
+      generator: "MinGW Makefiles"
+      cxx_path: 'C:\mingw-w64\i686-6.3.0-posix-dwarf-rt_v5-rev1\mingw32\bin'
+      enabled_on_pr: yes
+
+configuration:
+  - Debug
+
+build:
+  verbosity: minimal
+
+install:
+- ps: |
+    Write-Output "Compiler: $env:compiler"
+    Write-Output "Generator: $env:generator"
+    Write-Output "Env:Configuation: $env:configuration"
+    Write-Output "Env: $env"
+    if (-not (Test-Path env:APPVEYOR_PULL_REQUEST_NUMBER)) {
+      Write-Output "This is *NOT* a pull request build"
+    } else {
+      Write-Output "This is a pull request build"
+      if (-not (Test-Path env:enabled_on_pr) -or $env:enabled_on_pr -ne "yes") {
+        Write-Output "PR builds are *NOT* explicitly enabled"
+      }
+    }
+
+    # install Bazel
+    if ($env:build_system -eq "bazel") {
+        appveyor DownloadFile https://github.com/bazelbuild/bazel/releases/download/0.28.1/bazel-0.28.1-windows-x86_64.exe -FileName bazel.exe
+    }
+
+    if ($env:build_system -eq "cmake") {
+        # git bash conflicts with MinGW makefiles
+        if ($env:generator -eq "MinGW Makefiles") {
+            $env:path = $env:path.replace("C:\Program Files\Git\usr\bin;", "")
+            if ($env:cxx_path -ne "") {
+                $env:path += ";$env:cxx_path"
+            }
+        }
+    }
+
+before_build:
+- ps: |
+     $env:root=$env:APPVEYOR_BUILD_FOLDER
+     Write-Output "env:root: $env:root"
+
+build_script:
+- ps: |
+    # Only enable some builds for pull requests, the AppVeyor queue is too long.
+    if ((Test-Path env:APPVEYOR_PULL_REQUEST_NUMBER) -And (-not (Test-Path env:enabled_on_pr) -or $env:enabled_on_pr -ne "yes")) {
+      return
+    } else {
+        # special case - build with Bazel
+        if ($env:build_system -eq "bazel") {
+            & $env:root\bazel.exe build -c opt //:gtest_samples
+            if ($LastExitCode -eq 0) { # bazel writes to StdErr and PowerShell interprets it as an error
+                $host.SetShouldExit(0)
+            } else { # a real error
+                throw "Exec: $ErrorMessage"
+            }
+            return
+        }
+    }
+    # by default build with CMake
+    md _build -Force | Out-Null
+    cd _build
+
+    $conf = if ($env:generator -eq "MinGW Makefiles") {"-DCMAKE_BUILD_TYPE=$env:configuration"} else {"-DCMAKE_CONFIGURATION_TYPES=Debug;Release"}
+    # Disable test for MinGW (gtest tests fail, gmock tests can not build)
+    $gtest_build_tests = if ($env:generator -eq "MinGW Makefiles") {"-Dgtest_build_tests=OFF"} else {"-Dgtest_build_tests=ON"}
+    $gmock_build_tests = if ($env:generator -eq "MinGW Makefiles") {"-Dgmock_build_tests=OFF"} else {"-Dgmock_build_tests=ON"}
+    & cmake -G "$env:generator" $conf -Dgtest_build_samples=ON $gtest_build_tests $gmock_build_tests ..
+    if ($LastExitCode -ne 0) {
+        throw "Exec: $ErrorMessage"
+    }
+    $cmake_parallel = if ($env:generator -eq "MinGW Makefiles") {"-j2"} else  {"/m"}
+    & cmake --build . --config $env:configuration -- $cmake_parallel
+    if ($LastExitCode -ne 0) {
+        throw "Exec: $ErrorMessage"
+    }
+
+
+skip_commits:
+  files:
+    - '**/*.md'
+
+test_script:
+- ps: |
+    # Only enable some builds for pull requests, the AppVeyor queue is too long.
+    if ((Test-Path env:APPVEYOR_PULL_REQUEST_NUMBER) -And (-not (Test-Path env:enabled_on_pr) -or $env:enabled_on_pr -ne "yes")) {
+      return
+    }
+    if ($env:build_system -eq "bazel") {
+        # special case - testing with Bazel
+        & $env:root\bazel.exe test //:gtest_samples
+        if ($LastExitCode -eq 0) { # bazel writes to StdErr and PowerShell interprets it as an error
+            $host.SetShouldExit(0)
+        } else { # a real error
+            throw "Exec: $ErrorMessage"
+        }
+    }
+    if ($env:build_system -eq "cmake") {
+        # built with CMake - test with CTest
+        if ($env:generator -eq "MinGW Makefiles") {
+            return # No test available for MinGW
+        }
+
+        & ctest -C $env:configuration --timeout 600 --output-on-failure
+        if ($LastExitCode -ne 0) {
+            throw "Exec: $ErrorMessage"
+        }
+    }
+
+artifacts:
+  - path: '_build/CMakeFiles/*.log'
+    name: logs
+  - path: '_build/Testing/**/*.xml'
+    name: test_results
+  - path: 'bazel-testlogs/**/test.log'
+    name: test_logs
+  - path: 'bazel-testlogs/**/test.xml'
+    name: test_results
diff --git a/build/_deps/googletest-src/ci/build-linux-bazel.sh b/build/_deps/googletest-src/ci/build-linux-bazel.sh
new file mode 100755
index 0000000000000000000000000000000000000000..ae8fb75816f99be89c0171fb5b287149f52c19be
--- /dev/null
+++ b/build/_deps/googletest-src/ci/build-linux-bazel.sh
@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# Copyright 2017 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+set -e
+
+bazel version
+bazel build --curses=no //...:all
+bazel test --curses=no //...:all
+bazel test --curses=no //...:all --define absl=1
diff --git a/build/_deps/googletest-src/ci/build-platformio.sh b/build/_deps/googletest-src/ci/build-platformio.sh
new file mode 100644
index 0000000000000000000000000000000000000000..1d7658d8738bda68a6c73b5341f39bc7c84d43e1
--- /dev/null
+++ b/build/_deps/googletest-src/ci/build-platformio.sh
@@ -0,0 +1,2 @@
+# run PlatformIO builds
+platformio run
diff --git a/build/_deps/googletest-src/ci/env-linux.sh b/build/_deps/googletest-src/ci/env-linux.sh
new file mode 100755
index 0000000000000000000000000000000000000000..37800d6a355c507101fa10e6efbb670b0c1dfeb4
--- /dev/null
+++ b/build/_deps/googletest-src/ci/env-linux.sh
@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+# Copyright 2017 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#
+# This file should be sourced, and not executed as a standalone script.
+#
+
+# TODO() - we can check if this is being sourced using $BASH_VERSION and $BASH_SOURCE[0] != ${0}.
+
+if [ "${TRAVIS_OS_NAME}" = "linux" ]; then
+    if [ "$CXX" = "g++" ]; then export CXX="g++-4.9" CC="gcc-4.9"; fi
+    if [ "$CXX" = "clang++" ]; then export CXX="clang++-3.9" CC="clang-3.9"; fi
+fi
diff --git a/build/_deps/googletest-src/ci/env-osx.sh b/build/_deps/googletest-src/ci/env-osx.sh
new file mode 100755
index 0000000000000000000000000000000000000000..9c421e14314c8371f3fd8dee0eaee1b7ec917a8d
--- /dev/null
+++ b/build/_deps/googletest-src/ci/env-osx.sh
@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+# Copyright 2017 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#
+# This file should be sourced, and not executed as a standalone script.
+#
+
+# TODO() - we can check if this is being sourced using $BASH_VERSION and $BASH_SOURCE[0] != ${0}.
+#
+
+if [ "${TRAVIS_OS_NAME}" = "osx" ]; then
+    if [ "$CXX" = "clang++" ]; then
+        # $PATH needs to be adjusted because the llvm tap doesn't install the
+        # package to /usr/local/bin, etc, like the gcc tap does.
+        # See: https://github.com/Homebrew/legacy-homebrew/issues/29733
+        clang_version=3.9
+        export PATH="/usr/local/opt/llvm@${clang_version}/bin:$PATH";
+    fi
+fi
diff --git a/build/_deps/googletest-src/ci/get-nprocessors.sh b/build/_deps/googletest-src/ci/get-nprocessors.sh
new file mode 100755
index 0000000000000000000000000000000000000000..43635e761e2d013e905bc1cb95199aaeb03b72f6
--- /dev/null
+++ b/build/_deps/googletest-src/ci/get-nprocessors.sh
@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+# Copyright 2017 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# This file is typically sourced by another script.
+# if possible, ask for the precise number of processors,
+# otherwise take 2 processors as reasonable default; see
+# https://docs.travis-ci.com/user/speeding-up-the-build/#Makefile-optimization
+if [ -x /usr/bin/getconf ]; then
+    NPROCESSORS=$(/usr/bin/getconf _NPROCESSORS_ONLN)
+else
+    NPROCESSORS=2
+fi
+
+# as of 2017-09-04 Travis CI reports 32 processors, but GCC build
+# crashes if parallelized too much (maybe memory consumption problem),
+# so limit to 4 processors for the time being.
+if [ $NPROCESSORS -gt 4 ] ; then
+	echo "$0:Note: Limiting processors to use by make from $NPROCESSORS to 4."
+	NPROCESSORS=4
+fi
diff --git a/build/_deps/googletest-src/ci/install-linux.sh b/build/_deps/googletest-src/ci/install-linux.sh
new file mode 100755
index 0000000000000000000000000000000000000000..05e2cb280318864fabfe5951f1209f9a7edd9be2
--- /dev/null
+++ b/build/_deps/googletest-src/ci/install-linux.sh
@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+# Copyright 2017 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+set -eu
+
+if [ "${TRAVIS_OS_NAME}" != linux ]; then
+    echo "Not a Linux build; skipping installation"
+    exit 0
+fi
+
+
+if [ "${TRAVIS_SUDO}" = "true" ]; then
+    echo "deb [arch=amd64] http://storage.googleapis.com/bazel-apt stable jdk1.8" | \
+        sudo tee /etc/apt/sources.list.d/bazel.list
+    curl https://bazel.build/bazel-release.pub.gpg | sudo apt-key add -
+    sudo apt-get update && sudo apt-get install -y bazel gcc-4.9 g++-4.9 clang-3.9
+elif [ "${CXX}" = "clang++" ]; then
+    # Use ccache, assuming $HOME/bin is in the path, which is true in the Travis build environment.
+    ln -sf /usr/bin/ccache $HOME/bin/${CXX};
+    ln -sf /usr/bin/ccache $HOME/bin/${CC};
+fi
diff --git a/build/_deps/googletest-src/ci/install-osx.sh b/build/_deps/googletest-src/ci/install-osx.sh
new file mode 100755
index 0000000000000000000000000000000000000000..cc4750829ce5099d338feef14bdf9b603b2e0e97
--- /dev/null
+++ b/build/_deps/googletest-src/ci/install-osx.sh
@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+# Copyright 2017 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+set -eu
+
+if [ "${TRAVIS_OS_NAME}" != "osx" ]; then
+    echo "Not a macOS build; skipping installation"
+    exit 0
+fi
+
+brew update
+brew install ccache gcc@4.9
diff --git a/build/_deps/googletest-src/ci/install-platformio.sh b/build/_deps/googletest-src/ci/install-platformio.sh
new file mode 100644
index 0000000000000000000000000000000000000000..4d7860a560c95eb75a4f61ba2985f60e175fae1d
--- /dev/null
+++ b/build/_deps/googletest-src/ci/install-platformio.sh
@@ -0,0 +1,5 @@
+# install PlatformIO
+sudo pip install -U platformio
+
+# update PlatformIO
+platformio update
diff --git a/build/_deps/googletest-src/ci/log-config.sh b/build/_deps/googletest-src/ci/log-config.sh
new file mode 100755
index 0000000000000000000000000000000000000000..5fef11948b18f2f6719850fdac2ea1a775035e0b
--- /dev/null
+++ b/build/_deps/googletest-src/ci/log-config.sh
@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+# Copyright 2017 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+set -e
+
+# ccache on OS X needs installation first
+# reset ccache statistics
+ccache --zero-stats
+
+echo PATH=${PATH}
+
+echo "Compiler configuration:"
+echo CXX=${CXX}
+echo CC=${CC}
+echo CXXFLAGS=${CXXFLAGS}
+
+echo "C++ compiler version:"
+${CXX} --version || echo "${CXX} does not seem to support the --version flag"
+${CXX} -v || echo "${CXX} does not seem to support the -v flag"
+
+echo "C compiler version:"
+${CC} --version || echo "${CXX} does not seem to support the --version flag"
+${CC} -v || echo "${CXX} does not seem to support the -v flag"
diff --git a/build/_deps/googletest-src/ci/travis.sh b/build/_deps/googletest-src/ci/travis.sh
new file mode 100755
index 0000000000000000000000000000000000000000..9ff3bad3eebcf2e6da93f58c0033d2ad6aceb4c1
--- /dev/null
+++ b/build/_deps/googletest-src/ci/travis.sh
@@ -0,0 +1,44 @@
+#!/usr/bin/env sh
+set -evx
+
+. ci/get-nprocessors.sh
+
+# if possible, ask for the precise number of processors,
+# otherwise take 2 processors as reasonable default; see
+# https://docs.travis-ci.com/user/speeding-up-the-build/#Makefile-optimization
+if [ -x /usr/bin/getconf ]; then
+    NPROCESSORS=$(/usr/bin/getconf _NPROCESSORS_ONLN)
+else
+    NPROCESSORS=2
+fi
+# as of 2017-09-04 Travis CI reports 32 processors, but GCC build
+# crashes if parallelized too much (maybe memory consumption problem),
+# so limit to 4 processors for the time being.
+if [ $NPROCESSORS -gt 4 ] ; then
+	echo "$0:Note: Limiting processors to use by make from $NPROCESSORS to 4."
+	NPROCESSORS=4
+fi
+# Tell make to use the processors. No preceding '-' required.
+MAKEFLAGS="j${NPROCESSORS}"
+export MAKEFLAGS
+
+env | sort
+
+# Set default values to OFF for these variables if not specified.
+: "${NO_EXCEPTION:=OFF}"
+: "${NO_RTTI:=OFF}"
+: "${COMPILER_IS_GNUCXX:=OFF}"
+
+mkdir build || true
+cd build
+cmake -Dgtest_build_samples=ON \
+      -Dgtest_build_tests=ON \
+      -Dgmock_build_tests=ON \
+      -Dcxx_no_exception=$NO_EXCEPTION \
+      -Dcxx_no_rtti=$NO_RTTI \
+      -DCMAKE_COMPILER_IS_GNUCXX=$COMPILER_IS_GNUCXX \
+      -DCMAKE_CXX_FLAGS=$CXX_FLAGS \
+      -DCMAKE_BUILD_TYPE=$BUILD_TYPE \
+      ..
+make
+CTEST_OUTPUT_ON_FAILURE=1 make test
diff --git a/build/_deps/googletest-src/googlemock/CMakeLists.txt b/build/_deps/googletest-src/googlemock/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d32b70b5be0e0ae74f5376fb03a2226065ad599a
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/CMakeLists.txt
@@ -0,0 +1,233 @@
+########################################################################
+# Note: CMake support is community-based. The maintainers do not use CMake
+# internally.
+#
+# CMake build script for Google Mock.
+#
+# To run the tests for Google Mock itself on Linux, use 'make test' or
+# ctest.  You can select which tests to run using 'ctest -R regex'.
+# For more options, run 'ctest --help'.
+
+option(gmock_build_tests "Build all of Google Mock's own tests." OFF)
+
+# A directory to find Google Test sources.
+if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/gtest/CMakeLists.txt")
+  set(gtest_dir gtest)
+else()
+  set(gtest_dir ../googletest)
+endif()
+
+# Defines pre_project_set_up_hermetic_build() and set_up_hermetic_build().
+include("${gtest_dir}/cmake/hermetic_build.cmake" OPTIONAL)
+
+if (COMMAND pre_project_set_up_hermetic_build)
+  # Google Test also calls hermetic setup functions from add_subdirectory,
+  # although its changes will not affect things at the current scope.
+  pre_project_set_up_hermetic_build()
+endif()
+
+########################################################################
+#
+# Project-wide settings
+
+# Name of the project.
+#
+# CMake files in this project can refer to the root source directory
+# as ${gmock_SOURCE_DIR} and to the root binary directory as
+# ${gmock_BINARY_DIR}.
+# Language "C" is required for find_package(Threads).
+if (CMAKE_VERSION VERSION_LESS 3.0)
+  project(gmock CXX C)
+else()
+  cmake_policy(SET CMP0048 NEW)
+  project(gmock VERSION ${GOOGLETEST_VERSION} LANGUAGES CXX C)
+endif()
+cmake_minimum_required(VERSION 2.6.4)
+
+if (COMMAND set_up_hermetic_build)
+  set_up_hermetic_build()
+endif()
+
+# Instructs CMake to process Google Test's CMakeLists.txt and add its
+# targets to the current scope.  We are placing Google Test's binary
+# directory in a subdirectory of our own as VC compilation may break
+# if they are the same (the default).
+add_subdirectory("${gtest_dir}" "${gmock_BINARY_DIR}/${gtest_dir}")
+
+
+# These commands only run if this is the main project
+if(CMAKE_PROJECT_NAME STREQUAL "gmock" OR CMAKE_PROJECT_NAME STREQUAL "googletest-distribution")
+  # BUILD_SHARED_LIBS is a standard CMake variable, but we declare it here to
+  # make it prominent in the GUI.
+  option(BUILD_SHARED_LIBS "Build shared libraries (DLLs)." OFF)
+else()
+  mark_as_advanced(gmock_build_tests)
+endif()
+
+# Although Google Test's CMakeLists.txt calls this function, the
+# changes there don't affect the current scope.  Therefore we have to
+# call it again here.
+config_compiler_and_linker()  # from ${gtest_dir}/cmake/internal_utils.cmake
+
+# Adds Google Mock's and Google Test's header directories to the search path.
+set(gmock_build_include_dirs
+  "${gmock_SOURCE_DIR}/include"
+  "${gmock_SOURCE_DIR}"
+  "${gtest_SOURCE_DIR}/include"
+  # This directory is needed to build directly from Google Test sources.
+  "${gtest_SOURCE_DIR}")
+include_directories(${gmock_build_include_dirs})
+
+########################################################################
+#
+# Defines the gmock & gmock_main libraries.  User tests should link
+# with one of them.
+
+# Google Mock libraries.  We build them using more strict warnings than what
+# are used for other targets, to ensure that Google Mock can be compiled by
+# a user aggressive about warnings.
+if (MSVC)
+  cxx_library(gmock
+              "${cxx_strict}"
+              "${gtest_dir}/src/gtest-all.cc"
+              src/gmock-all.cc)
+
+  cxx_library(gmock_main
+              "${cxx_strict}"
+              "${gtest_dir}/src/gtest-all.cc"
+              src/gmock-all.cc
+              src/gmock_main.cc)
+else()
+  cxx_library(gmock "${cxx_strict}" src/gmock-all.cc)
+  target_link_libraries(gmock PUBLIC gtest)
+  cxx_library(gmock_main "${cxx_strict}" src/gmock_main.cc)
+  target_link_libraries(gmock_main PUBLIC gmock)
+endif()
+# If the CMake version supports it, attach header directory information
+# to the targets for when we are part of a parent build (ie being pulled
+# in via add_subdirectory() rather than being a standalone build).
+if (DEFINED CMAKE_VERSION AND NOT "${CMAKE_VERSION}" VERSION_LESS "2.8.11")
+  target_include_directories(gmock SYSTEM INTERFACE
+    "$<BUILD_INTERFACE:${gmock_build_include_dirs}>"
+    "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
+  target_include_directories(gmock_main SYSTEM INTERFACE
+    "$<BUILD_INTERFACE:${gmock_build_include_dirs}>"
+    "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
+endif()
+
+########################################################################
+#
+# Install rules
+install_project(gmock gmock_main)
+
+########################################################################
+#
+# Google Mock's own tests.
+#
+# You can skip this section if you aren't interested in testing
+# Google Mock itself.
+#
+# The tests are not built by default.  To build them, set the
+# gmock_build_tests option to ON.  You can do it by running ccmake
+# or specifying the -Dgmock_build_tests=ON flag when running cmake.
+
+if (gmock_build_tests)
+  # This must be set in the root directory for the tests to be run by
+  # 'make test' or ctest.
+  enable_testing()
+
+  if (WIN32)
+    file(GENERATE OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>/RunTest.ps1"
+         CONTENT
+"$project_bin = \"${CMAKE_BINARY_DIR}/bin/$<CONFIG>\"
+$env:Path = \"$project_bin;$env:Path\"
+& $args")
+  elseif (MINGW OR CYGWIN)
+    file(GENERATE OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/RunTest.ps1"
+         CONTENT
+"$project_bin = (cygpath --windows ${CMAKE_BINARY_DIR}/bin)
+$env:Path = \"$project_bin;$env:Path\"
+& $args")
+  endif()
+
+  if (MINGW OR CYGWIN)
+    if (CMAKE_VERSION VERSION_LESS "2.8.12")
+      add_compile_options("-Wa,-mbig-obj")
+    else()
+      add_definitions("-Wa,-mbig-obj")
+    endif()
+  endif()
+
+  ############################################################
+  # C++ tests built with standard compiler flags.
+
+  cxx_test(gmock-actions_test gmock_main)
+  cxx_test(gmock-cardinalities_test gmock_main)
+  cxx_test(gmock_ex_test gmock_main)
+  cxx_test(gmock-function-mocker_test gmock_main)
+  cxx_test(gmock-generated-actions_test gmock_main)
+  cxx_test(gmock-generated-function-mockers_test gmock_main)
+  cxx_test(gmock-generated-matchers_test gmock_main)
+  cxx_test(gmock-internal-utils_test gmock_main)
+  cxx_test(gmock-matchers_test gmock_main)
+  cxx_test(gmock-more-actions_test gmock_main)
+  cxx_test(gmock-nice-strict_test gmock_main)
+  cxx_test(gmock-port_test gmock_main)
+  cxx_test(gmock-spec-builders_test gmock_main)
+  cxx_test(gmock_link_test gmock_main test/gmock_link2_test.cc)
+  cxx_test(gmock_test gmock_main)
+
+  if (DEFINED GTEST_HAS_PTHREAD)
+    cxx_test(gmock_stress_test gmock)
+  endif()
+
+  # gmock_all_test is commented to save time building and running tests.
+  # Uncomment if necessary.
+  # cxx_test(gmock_all_test gmock_main)
+
+  ############################################################
+  # C++ tests built with non-standard compiler flags.
+
+  if (MSVC)
+    cxx_library(gmock_main_no_exception "${cxx_no_exception}"
+      "${gtest_dir}/src/gtest-all.cc" src/gmock-all.cc src/gmock_main.cc)
+
+    cxx_library(gmock_main_no_rtti "${cxx_no_rtti}"
+      "${gtest_dir}/src/gtest-all.cc" src/gmock-all.cc src/gmock_main.cc)
+
+  else()
+    cxx_library(gmock_main_no_exception "${cxx_no_exception}" src/gmock_main.cc)
+    target_link_libraries(gmock_main_no_exception PUBLIC gmock)
+
+    cxx_library(gmock_main_no_rtti "${cxx_no_rtti}" src/gmock_main.cc)
+    target_link_libraries(gmock_main_no_rtti PUBLIC gmock)
+  endif()
+  cxx_test_with_flags(gmock-more-actions_no_exception_test "${cxx_no_exception}"
+    gmock_main_no_exception test/gmock-more-actions_test.cc)
+
+  cxx_test_with_flags(gmock_no_rtti_test "${cxx_no_rtti}"
+    gmock_main_no_rtti test/gmock-spec-builders_test.cc)
+
+  cxx_shared_library(shared_gmock_main "${cxx_default}"
+    "${gtest_dir}/src/gtest-all.cc" src/gmock-all.cc src/gmock_main.cc)
+
+  # Tests that a binary can be built with Google Mock as a shared library.  On
+  # some system configurations, it may not possible to run the binary without
+  # knowing more details about the system configurations. We do not try to run
+  # this binary. To get a more robust shared library coverage, configure with
+  # -DBUILD_SHARED_LIBS=ON.
+  cxx_executable_with_flags(shared_gmock_test_ "${cxx_default}"
+    shared_gmock_main test/gmock-spec-builders_test.cc)
+  set_target_properties(shared_gmock_test_
+    PROPERTIES
+    COMPILE_DEFINITIONS "GTEST_LINKED_AS_SHARED_LIBRARY=1")
+
+  ############################################################
+  # Python tests.
+
+  cxx_executable(gmock_leak_test_ test gmock_main)
+  py_test(gmock_leak_test)
+
+  cxx_executable(gmock_output_test_ test gmock)
+  py_test(gmock_output_test)
+endif()
diff --git a/build/_deps/googletest-src/googlemock/CONTRIBUTORS b/build/_deps/googletest-src/googlemock/CONTRIBUTORS
new file mode 100644
index 0000000000000000000000000000000000000000..6e9ae362b60c384c743cd654903ec287fb6a270c
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/CONTRIBUTORS
@@ -0,0 +1,40 @@
+# This file contains a list of people who've made non-trivial
+# contribution to the Google C++ Mocking Framework project.  People
+# who commit code to the project are encouraged to add their names
+# here.  Please keep the list sorted by first names.
+
+Benoit Sigoure <tsuna@google.com>
+Bogdan Piloca <boo@google.com>
+Chandler Carruth <chandlerc@google.com>
+Dave MacLachlan <dmaclach@gmail.com>
+David Anderson <danderson@google.com>
+Dean Sturtevant
+Gene Volovich <gv@cite.com>
+Hal Burch <gmock@hburch.com>
+Jeffrey Yasskin <jyasskin@google.com>
+Jim Keller <jimkeller@google.com>
+Joe Walnes <joe@truemesh.com>
+Jon Wray <jwray@google.com>
+Keir Mierle <mierle@gmail.com>
+Keith Ray <keith.ray@gmail.com>
+Kostya Serebryany <kcc@google.com>
+Lev Makhlis
+Manuel Klimek <klimek@google.com>
+Mario Tanev <radix@google.com>
+Mark Paskin
+Markus Heule <markus.heule@gmail.com>
+Matthew Simmons <simmonmt@acm.org>
+Mike Bland <mbland@google.com>
+Neal Norwitz <nnorwitz@gmail.com>
+Nermin Ozkiranartli <nermin@google.com>
+Owen Carlsen <ocarlsen@google.com>
+Paneendra Ba <paneendra@google.com>
+Paul Menage <menage@google.com>
+Piotr Kaminski <piotrk@google.com>
+Russ Rufer <russ@pentad.com>
+Sverre Sundsdal <sundsdal@gmail.com>
+Takeshi Yoshino <tyoshino@google.com>
+Vadim Berman <vadimb@google.com>
+Vlad Losev <vladl@google.com>
+Wolfgang Klier <wklier@google.com>
+Zhanyong Wan <wan@google.com>
diff --git a/build/_deps/googletest-src/googlemock/LICENSE b/build/_deps/googletest-src/googlemock/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..1941a11f8ce94389160b458927a29ba217542818
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/LICENSE
@@ -0,0 +1,28 @@
+Copyright 2008, Google Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+    * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/build/_deps/googletest-src/googlemock/README.md b/build/_deps/googletest-src/googlemock/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..183fdb81d9b6f17b5e57bd9bb6e86066d943a427
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/README.md
@@ -0,0 +1,44 @@
+# Googletest Mocking (gMock) Framework
+
+### Overview
+
+Google's framework for writing and using C++ mock classes. It can help you
+derive better designs of your system and write better tests.
+
+It is inspired by:
+
+*   [jMock](http://www.jmock.org/),
+*   [EasyMock](http://www.easymock.org/), and
+*   [Hamcrest](http://code.google.com/p/hamcrest/),
+
+and designed with C++'s specifics in mind.
+
+gMock:
+
+-   provides a declarative syntax for defining mocks,
+-   can define partial (hybrid) mocks, which are a cross of real and mock
+    objects,
+-   handles functions of arbitrary types and overloaded functions,
+-   comes with a rich set of matchers for validating function arguments,
+-   uses an intuitive syntax for controlling the behavior of a mock,
+-   does automatic verification of expectations (no record-and-replay needed),
+-   allows arbitrary (partial) ordering constraints on function calls to be
+    expressed,
+-   lets a user extend it by defining new matchers and actions.
+-   does not use exceptions, and
+-   is easy to learn and use.
+
+Details and examples can be found here:
+
+*   [gMock for Dummies](docs/for_dummies.md)
+*   [Legacy gMock FAQ](docs/gmock_faq.md)
+*   [gMock Cookbook](docs/cook_book.md)
+*   [gMock Cheat Sheet](docs/cheat_sheet.md)
+
+Please note that code under scripts/generator/ is from the [cppclean
+project](http://code.google.com/p/cppclean/) and under the Apache
+License, which is different from Google Mock's license.
+
+Google Mock is a part of
+[Google Test C++ testing framework](http://github.com/google/googletest/) and a
+subject to the same requirements.
diff --git a/build/_deps/googletest-src/googlemock/cmake/gmock.pc.in b/build/_deps/googletest-src/googlemock/cmake/gmock.pc.in
new file mode 100644
index 0000000000000000000000000000000000000000..08e0454749ba7d9d33812f610ec2d8d94d58b43e
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/cmake/gmock.pc.in
@@ -0,0 +1,11 @@
+prefix=${pcfiledir}/../..
+libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
+
+Name: gmock
+Description: GoogleMock (without main() function)
+Version: @PROJECT_VERSION@
+URL: https://github.com/google/googletest
+Requires: gtest
+Libs: -L${libdir} -lgmock @CMAKE_THREAD_LIBS_INIT@
+Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@ @CMAKE_THREAD_LIBS_INIT@
diff --git a/build/_deps/googletest-src/googlemock/cmake/gmock_main.pc.in b/build/_deps/googletest-src/googlemock/cmake/gmock_main.pc.in
new file mode 100644
index 0000000000000000000000000000000000000000..b22fe614828393c9c8e7aa690a0cbdc6a97e3c42
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/cmake/gmock_main.pc.in
@@ -0,0 +1,11 @@
+prefix=${pcfiledir}/../..
+libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
+
+Name: gmock_main
+Description: GoogleMock (with main() function)
+Version: @PROJECT_VERSION@
+URL: https://github.com/google/googletest
+Requires: gmock
+Libs: -L${libdir} -lgmock_main @CMAKE_THREAD_LIBS_INIT@
+Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@ @CMAKE_THREAD_LIBS_INIT@
diff --git a/build/_deps/googletest-src/googlemock/docs/cheat_sheet.md b/build/_deps/googletest-src/googlemock/docs/cheat_sheet.md
new file mode 100644
index 0000000000000000000000000000000000000000..850963af28482ca96fee858aa7932e5d56a82526
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/docs/cheat_sheet.md
@@ -0,0 +1,781 @@
+## gMock Cheat Sheet
+
+<!-- GOOGLETEST_CM0019 DO NOT DELETE -->
+
+<!-- GOOGLETEST_CM0033 DO NOT DELETE -->
+
+### Defining a Mock Class
+
+#### Mocking a Normal Class {#MockClass}
+
+Given
+
+```cpp
+class Foo {
+  ...
+  virtual ~Foo();
+  virtual int GetSize() const = 0;
+  virtual string Describe(const char* name) = 0;
+  virtual string Describe(int type) = 0;
+  virtual bool Process(Bar elem, int count) = 0;
+};
+```
+
+(note that `~Foo()` **must** be virtual) we can define its mock as
+
+```cpp
+#include "gmock/gmock.h"
+
+class MockFoo : public Foo {
+  ...
+  MOCK_METHOD(int, GetSize, (), (const, override));
+  MOCK_METHOD(string, Describe, (const char* name), (override));
+  MOCK_METHOD(string, Describe, (int type), (override));
+  MOCK_METHOD(bool, Process, (Bar elem, int count), (override));
+};
+```
+
+To create a "nice" mock, which ignores all uninteresting calls, a "naggy" mock,
+which warns on all uninteresting calls, or a "strict" mock, which treats them as
+failures:
+
+```cpp
+using ::testing::NiceMock;
+using ::testing::NaggyMock;
+using ::testing::StrictMock;
+
+NiceMock<MockFoo> nice_foo;      // The type is a subclass of MockFoo.
+NaggyMock<MockFoo> naggy_foo;    // The type is a subclass of MockFoo.
+StrictMock<MockFoo> strict_foo;  // The type is a subclass of MockFoo.
+```
+
+**Note:** A mock object is currently naggy by default. We may make it nice by
+default in the future.
+
+#### Mocking a Class Template {#MockTemplate}
+
+Class templates can be mocked just like any class.
+
+To mock
+
+```cpp
+template <typename Elem>
+class StackInterface {
+  ...
+  virtual ~StackInterface();
+  virtual int GetSize() const = 0;
+  virtual void Push(const Elem& x) = 0;
+};
+```
+
+(note that all member functions that are mocked, including `~StackInterface()`
+**must** be virtual).
+
+```cpp
+template <typename Elem>
+class MockStack : public StackInterface<Elem> {
+  ...
+  MOCK_METHOD(int, GetSize, (), (const, override));
+  MOCK_METHOD(void, Push, (const Elem& x), (override));
+};
+```
+
+#### Specifying Calling Conventions for Mock Functions
+
+If your mock function doesn't use the default calling convention, you can
+specify it by adding `Calltype(convention)` to `MOCK_METHOD`'s 4th parameter.
+For example,
+
+```cpp
+  MOCK_METHOD(bool, Foo, (int n), (Calltype(STDMETHODCALLTYPE)));
+  MOCK_METHOD(int, Bar, (double x, double y),
+              (const, Calltype(STDMETHODCALLTYPE)));
+```
+
+where `STDMETHODCALLTYPE` is defined by `<objbase.h>` on Windows.
+
+### Using Mocks in Tests {#UsingMocks}
+
+The typical work flow is:
+
+1.  Import the gMock names you need to use. All gMock symbols are in the
+    `testing` namespace unless they are macros or otherwise noted.
+2.  Create the mock objects.
+3.  Optionally, set the default actions of the mock objects.
+4.  Set your expectations on the mock objects (How will they be called? What
+    will they do?).
+5.  Exercise code that uses the mock objects; if necessary, check the result
+    using googletest assertions.
+6.  When a mock object is destructed, gMock automatically verifies that all
+    expectations on it have been satisfied.
+
+Here's an example:
+
+```cpp
+using ::testing::Return;                          // #1
+
+TEST(BarTest, DoesThis) {
+  MockFoo foo;                                    // #2
+
+  ON_CALL(foo, GetSize())                         // #3
+      .WillByDefault(Return(1));
+  // ... other default actions ...
+
+  EXPECT_CALL(foo, Describe(5))                   // #4
+      .Times(3)
+      .WillRepeatedly(Return("Category 5"));
+  // ... other expectations ...
+
+  EXPECT_EQ("good", MyProductionFunction(&foo));  // #5
+}                                                 // #6
+```
+
+### Setting Default Actions {#OnCall}
+
+gMock has a **built-in default action** for any function that returns `void`,
+`bool`, a numeric value, or a pointer. In C++11, it will additionally returns
+the default-constructed value, if one exists for the given type.
+
+To customize the default action for functions with return type *`T`*:
+
+```cpp
+using ::testing::DefaultValue;
+
+// Sets the default value to be returned. T must be CopyConstructible.
+DefaultValue<T>::Set(value);
+// Sets a factory. Will be invoked on demand. T must be MoveConstructible.
+//  T MakeT();
+DefaultValue<T>::SetFactory(&MakeT);
+// ... use the mocks ...
+// Resets the default value.
+DefaultValue<T>::Clear();
+```
+
+Example usage:
+
+```cpp
+  // Sets the default action for return type std::unique_ptr<Buzz> to
+  // creating a new Buzz every time.
+  DefaultValue<std::unique_ptr<Buzz>>::SetFactory(
+      [] { return MakeUnique<Buzz>(AccessLevel::kInternal); });
+
+  // When this fires, the default action of MakeBuzz() will run, which
+  // will return a new Buzz object.
+  EXPECT_CALL(mock_buzzer_, MakeBuzz("hello")).Times(AnyNumber());
+
+  auto buzz1 = mock_buzzer_.MakeBuzz("hello");
+  auto buzz2 = mock_buzzer_.MakeBuzz("hello");
+  EXPECT_NE(nullptr, buzz1);
+  EXPECT_NE(nullptr, buzz2);
+  EXPECT_NE(buzz1, buzz2);
+
+  // Resets the default action for return type std::unique_ptr<Buzz>,
+  // to avoid interfere with other tests.
+  DefaultValue<std::unique_ptr<Buzz>>::Clear();
+```
+
+To customize the default action for a particular method of a specific mock
+object, use `ON_CALL()`. `ON_CALL()` has a similar syntax to `EXPECT_CALL()`,
+but it is used for setting default behaviors (when you do not require that the
+mock method is called). See [here](cook_book.md#UseOnCall) for a more detailed
+discussion.
+
+```cpp
+ON_CALL(mock-object, method(matchers))
+    .With(multi-argument-matcher)   ?
+    .WillByDefault(action);
+```
+
+### Setting Expectations {#ExpectCall}
+
+`EXPECT_CALL()` sets **expectations** on a mock method (How will it be called?
+What will it do?):
+
+```cpp
+EXPECT_CALL(mock-object, method (matchers)?)
+     .With(multi-argument-matcher)  ?
+     .Times(cardinality)            ?
+     .InSequence(sequences)         *
+     .After(expectations)           *
+     .WillOnce(action)              *
+     .WillRepeatedly(action)        ?
+     .RetiresOnSaturation();        ?
+```
+
+For each item above, `?` means it can be used at most once, while `*` means it
+can be used any number of times.
+
+In order to pass, `EXPECT_CALL` must be used before the calls are actually made.
+
+The `(matchers)` is a comma-separated list of matchers that correspond to each
+of the arguments of `method`, and sets the expectation only for calls of
+`method` that matches all of the matchers.
+
+If `(matchers)` is omitted, the expectation is the same as if the matchers were
+set to anything matchers (for example, `(_, _, _, _)` for a four-arg method).
+
+If `Times()` is omitted, the cardinality is assumed to be:
+
+*   `Times(1)` when there is neither `WillOnce()` nor `WillRepeatedly()`;
+*   `Times(n)` when there are `n` `WillOnce()`s but no `WillRepeatedly()`, where
+    `n` >= 1; or
+*   `Times(AtLeast(n))` when there are `n` `WillOnce()`s and a
+    `WillRepeatedly()`, where `n` >= 0.
+
+A method with no `EXPECT_CALL()` is free to be invoked *any number of times*,
+and the default action will be taken each time.
+
+### Matchers {#MatcherList}
+
+<!-- GOOGLETEST_CM0020 DO NOT DELETE -->
+
+A **matcher** matches a *single* argument. You can use it inside `ON_CALL()` or
+`EXPECT_CALL()`, or use it to validate a value directly using two macros:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+| Macro                                | Description                           |
+| :----------------------------------- | :------------------------------------ |
+| `EXPECT_THAT(actual_value, matcher)` | Asserts that `actual_value` matches `matcher`. |
+| `ASSERT_THAT(actual_value, matcher)` | The same as `EXPECT_THAT(actual_value, matcher)`, except that it generates a **fatal** failure. |
+<!-- mdformat on -->
+
+Built-in matchers (where `argument` is the function argument, e.g.
+`actual_value` in the example above, or when used in the context of
+`EXPECT_CALL(mock_object, method(matchers))`, the arguments of `method`) are
+divided into several categories:
+
+#### Wildcard
+
+Matcher                     | Description
+:-------------------------- | :-----------------------------------------------
+`_`                         | `argument` can be any value of the correct type.
+`A<type>()` or `An<type>()` | `argument` can be any value of type `type`.
+
+#### Generic Comparison
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                | Description                                         |
+| :--------------------- | :-------------------------------------------------- |
+| `Eq(value)` or `value` | `argument == value`                                 |
+| `Ge(value)`            | `argument >= value`                                 |
+| `Gt(value)`            | `argument > value`                                  |
+| `Le(value)`            | `argument <= value`                                 |
+| `Lt(value)`            | `argument < value`                                  |
+| `Ne(value)`            | `argument != value`                                 |
+| `IsFalse()`            | `argument` evaluates to `false` in a Boolean context. |
+| `IsTrue()`             | `argument` evaluates to `true` in a Boolean context. |
+| `IsNull()`             | `argument` is a `NULL` pointer (raw or smart).      |
+| `NotNull()`            | `argument` is a non-null pointer (raw or smart).    |
+| `Optional(m)`          | `argument` is `optional<>` that contains a value matching `m`. |
+| `VariantWith<T>(m)`    | `argument` is `variant<>` that holds the alternative of type T with a value matching `m`. |
+| `Ref(variable)`        | `argument` is a reference to `variable`.            |
+| `TypedEq<type>(value)` | `argument` has type `type` and is equal to `value`. You may need to use this instead of `Eq(value)` when the mock function is overloaded. |
+<!-- mdformat on -->
+
+Except `Ref()`, these matchers make a *copy* of `value` in case it's modified or
+destructed later. If the compiler complains that `value` doesn't have a public
+copy constructor, try wrap it in `ByRef()`, e.g.
+`Eq(ByRef(non_copyable_value))`. If you do that, make sure `non_copyable_value`
+is not changed afterwards, or the meaning of your matcher will be changed.
+
+#### Floating-Point Matchers {#FpMatchers}
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                          | Description                        |
+| :------------------------------- | :--------------------------------- |
+| `DoubleEq(a_double)`             | `argument` is a `double` value approximately equal to `a_double`, treating two NaNs as unequal. |
+| `FloatEq(a_float)`               | `argument` is a `float` value approximately equal to `a_float`, treating two NaNs as unequal. |
+| `NanSensitiveDoubleEq(a_double)` | `argument` is a `double` value approximately equal to `a_double`, treating two NaNs as equal. |
+| `NanSensitiveFloatEq(a_float)`   | `argument` is a `float` value approximately equal to `a_float`, treating two NaNs as equal. |
+<!-- mdformat on -->
+
+The above matchers use ULP-based comparison (the same as used in googletest).
+They automatically pick a reasonable error bound based on the absolute value of
+the expected value. `DoubleEq()` and `FloatEq()` conform to the IEEE standard,
+which requires comparing two NaNs for equality to return false. The
+`NanSensitive*` version instead treats two NaNs as equal, which is often what a
+user wants.
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                                           | Description              |
+| :------------------------------------------------ | :----------------------- |
+| `DoubleNear(a_double, max_abs_error)`             | `argument` is a `double` value close to `a_double` (absolute error <= `max_abs_error`), treating two NaNs as unequal. |
+| `FloatNear(a_float, max_abs_error)`               | `argument` is a `float` value close to `a_float` (absolute error <= `max_abs_error`), treating two NaNs as unequal. |
+| `NanSensitiveDoubleNear(a_double, max_abs_error)` | `argument` is a `double` value close to `a_double` (absolute error <= `max_abs_error`), treating two NaNs as equal. |
+| `NanSensitiveFloatNear(a_float, max_abs_error)`   | `argument` is a `float` value close to `a_float` (absolute error <= `max_abs_error`), treating two NaNs as equal. |
+<!-- mdformat on -->
+
+#### String Matchers
+
+The `argument` can be either a C string or a C++ string object:
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                 | Description                                        |
+| :---------------------- | :------------------------------------------------- |
+| `ContainsRegex(string)` | `argument` matches the given regular expression.   |
+| `EndsWith(suffix)`      | `argument` ends with string `suffix`.              |
+| `HasSubstr(string)`     | `argument` contains `string` as a sub-string.      |
+| `MatchesRegex(string)`  | `argument` matches the given regular expression with the match starting at the first character and ending at the last character. |
+| `StartsWith(prefix)`    | `argument` starts with string `prefix`.            |
+| `StrCaseEq(string)`     | `argument` is equal to `string`, ignoring case.    |
+| `StrCaseNe(string)`     | `argument` is not equal to `string`, ignoring case. |
+| `StrEq(string)`         | `argument` is equal to `string`.                   |
+| `StrNe(string)`         | `argument` is not equal to `string`.               |
+<!-- mdformat on -->
+
+`ContainsRegex()` and `MatchesRegex()` take ownership of the `RE` object. They
+use the regular expression syntax defined
+[here](../../googletest/docs/advanced.md#regular-expression-syntax).
+`StrCaseEq()`, `StrCaseNe()`, `StrEq()`, and `StrNe()` work for wide strings as
+well.
+
+#### Container Matchers
+
+Most STL-style containers support `==`, so you can use `Eq(expected_container)`
+or simply `expected_container` to match a container exactly. If you want to
+write the elements in-line, match them more flexibly, or get more informative
+messages, you can use:
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                                   | Description                      |
+| :---------------------------------------- | :------------------------------- |
+| `BeginEndDistanceIs(m)` | `argument` is a container whose `begin()` and `end()` iterators are separated by a number of increments matching `m`. E.g. `BeginEndDistanceIs(2)` or `BeginEndDistanceIs(Lt(2))`. For containers that define a `size()` method, `SizeIs(m)` may be more efficient. |
+| `ContainerEq(container)` | The same as `Eq(container)` except that the failure message also includes which elements are in one container but not the other. |
+| `Contains(e)` | `argument` contains an element that matches `e`, which can be either a value or a matcher. |
+| `Each(e)` | `argument` is a container where *every* element matches `e`, which can be either a value or a matcher. |
+| `ElementsAre(e0, e1, ..., en)` | `argument` has `n + 1` elements, where the *i*-th element matches `ei`, which can be a value or a matcher. |
+| `ElementsAreArray({e0, e1, ..., en})`, `ElementsAreArray(a_container)`, `ElementsAreArray(begin, end)`, `ElementsAreArray(array)`, or `ElementsAreArray(array, count)` | The same as `ElementsAre()` except that the expected element values/matchers come from an initializer list, STL-style container, iterator range, or C-style array. |
+| `IsEmpty()` | `argument` is an empty container (`container.empty()`). |
+| `IsSubsetOf({e0, e1, ..., en})`, `IsSubsetOf(a_container)`, `IsSubsetOf(begin, end)`, `IsSubsetOf(array)`, or `IsSubsetOf(array, count)` | `argument` matches `UnorderedElementsAre(x0, x1, ..., xk)` for some subset `{x0, x1, ..., xk}` of the expected matchers. |
+| `IsSupersetOf({e0, e1, ..., en})`, `IsSupersetOf(a_container)`, `IsSupersetOf(begin, end)`, `IsSupersetOf(array)`, or `IsSupersetOf(array, count)` | Some subset of `argument` matches `UnorderedElementsAre(`expected matchers`)`. |
+| `Pointwise(m, container)`, `Pointwise(m, {e0, e1, ..., en})` | `argument` contains the same number of elements as in `container`, and for all i, (the i-th element in `argument`, the i-th element in `container`) match `m`, which is a matcher on 2-tuples. E.g. `Pointwise(Le(), upper_bounds)` verifies that each element in `argument` doesn't exceed the corresponding element in `upper_bounds`. See more detail below. |
+| `SizeIs(m)` | `argument` is a container whose size matches `m`. E.g. `SizeIs(2)` or `SizeIs(Lt(2))`. |
+| `UnorderedElementsAre(e0, e1, ..., en)` | `argument` has `n + 1` elements, and under *some* permutation of the elements, each element matches an `ei` (for a different `i`), which can be a value or a matcher. |
+| `UnorderedElementsAreArray({e0, e1, ..., en})`, `UnorderedElementsAreArray(a_container)`, `UnorderedElementsAreArray(begin, end)`, `UnorderedElementsAreArray(array)`, or `UnorderedElementsAreArray(array, count)` | The same as `UnorderedElementsAre()` except that the expected element values/matchers come from an initializer list, STL-style container, iterator range, or C-style array. |
+| `UnorderedPointwise(m, container)`, `UnorderedPointwise(m, {e0, e1, ..., en})` | Like `Pointwise(m, container)`, but ignores the order of elements. |
+| `WhenSorted(m)` | When `argument` is sorted using the `<` operator, it matches container matcher `m`. E.g. `WhenSorted(ElementsAre(1, 2, 3))` verifies that `argument` contains elements 1, 2, and 3, ignoring order. |
+| `WhenSortedBy(comparator, m)` | The same as `WhenSorted(m)`, except that the given comparator instead of `<` is used to sort `argument`. E.g. `WhenSortedBy(std::greater(), ElementsAre(3, 2, 1))`. |
+<!-- mdformat on -->
+
+**Notes:**
+
+*   These matchers can also match:
+    1.  a native array passed by reference (e.g. in `Foo(const int (&a)[5])`),
+        and
+    2.  an array passed as a pointer and a count (e.g. in `Bar(const T* buffer,
+        int len)` -- see [Multi-argument Matchers](#MultiArgMatchers)).
+*   The array being matched may be multi-dimensional (i.e. its elements can be
+    arrays).
+*   `m` in `Pointwise(m, ...)` should be a matcher for `::std::tuple<T, U>`
+    where `T` and `U` are the element type of the actual container and the
+    expected container, respectively. For example, to compare two `Foo`
+    containers where `Foo` doesn't support `operator==`, one might write:
+
+    ```cpp
+    using ::std::get;
+    MATCHER(FooEq, "") {
+      return std::get<0>(arg).Equals(std::get<1>(arg));
+    }
+    ...
+    EXPECT_THAT(actual_foos, Pointwise(FooEq(), expected_foos));
+    ```
+
+#### Member Matchers
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                         | Description                                |
+| :------------------------------ | :----------------------------------------- |
+| `Field(&class::field, m)`       | `argument.field` (or `argument->field` when `argument` is a plain pointer) matches matcher `m`, where `argument` is an object of type _class_. |
+| `Key(e)`                        | `argument.first` matches `e`, which can be either a value or a matcher. E.g. `Contains(Key(Le(5)))` can verify that a `map` contains a key `<= 5`. |
+| `Pair(m1, m2)`                  | `argument` is an `std::pair` whose `first` field matches `m1` and `second` field matches `m2`. |
+| `Property(&class::property, m)` | `argument.property()` (or `argument->property()` when `argument` is a plain pointer) matches matcher `m`, where `argument` is an object of type _class_. |
+<!-- mdformat on -->
+
+#### Matching the Result of a Function, Functor, or Callback
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher          | Description                                       |
+| :--------------- | :------------------------------------------------ |
+| `ResultOf(f, m)` | `f(argument)` matches matcher `m`, where `f` is a function or functor. |
+<!-- mdformat on -->
+
+#### Pointer Matchers
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                   | Description                                     |
+| :------------------------ | :---------------------------------------------- |
+| `Pointee(m)`              | `argument` (either a smart pointer or a raw pointer) points to a value that matches matcher `m`. |
+| `WhenDynamicCastTo<T>(m)` | when `argument` is passed through `dynamic_cast<T>()`, it matches matcher `m`. |
+<!-- mdformat on -->
+
+<!-- GOOGLETEST_CM0026 DO NOT DELETE -->
+
+<!-- GOOGLETEST_CM0027 DO NOT DELETE -->
+
+#### Multi-argument Matchers {#MultiArgMatchers}
+
+Technically, all matchers match a *single* value. A "multi-argument" matcher is
+just one that matches a *tuple*. The following matchers can be used to match a
+tuple `(x, y)`:
+
+Matcher | Description
+:------ | :----------
+`Eq()`  | `x == y`
+`Ge()`  | `x >= y`
+`Gt()`  | `x > y`
+`Le()`  | `x <= y`
+`Lt()`  | `x < y`
+`Ne()`  | `x != y`
+
+You can use the following selectors to pick a subset of the arguments (or
+reorder them) to participate in the matching:
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                    | Description                                     |
+| :------------------------- | :---------------------------------------------- |
+| `AllArgs(m)`               | Equivalent to `m`. Useful as syntactic sugar in `.With(AllArgs(m))`. |
+| `Args<N1, N2, ..., Nk>(m)` | The tuple of the `k` selected (using 0-based indices) arguments matches `m`, e.g. `Args<1, 2>(Eq())`. |
+<!-- mdformat on -->
+
+#### Composite Matchers
+
+You can make a matcher from one or more other matchers:
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                          | Description                             |
+| :------------------------------- | :-------------------------------------- |
+| `AllOf(m1, m2, ..., mn)` | `argument` matches all of the matchers `m1` to `mn`. |
+| `AllOfArray({m0, m1, ..., mn})`, `AllOfArray(a_container)`, `AllOfArray(begin, end)`, `AllOfArray(array)`, or `AllOfArray(array, count)` | The same as `AllOf()` except that the matchers come from an initializer list, STL-style container, iterator range, or C-style array. |
+| `AnyOf(m1, m2, ..., mn)` | `argument` matches at least one of the matchers `m1` to `mn`. |
+| `AnyOfArray({m0, m1, ..., mn})`, `AnyOfArray(a_container)`, `AnyOfArray(begin, end)`, `AnyOfArray(array)`, or `AnyOfArray(array, count)` | The same as `AnyOf()` except that the matchers come from an initializer list, STL-style container, iterator range, or C-style array. |
+| `Not(m)` | `argument` doesn't match matcher `m`. |
+<!-- mdformat on -->
+
+<!-- GOOGLETEST_CM0028 DO NOT DELETE -->
+
+#### Adapters for Matchers
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                 | Description                           |
+| :---------------------- | :------------------------------------ |
+| `MatcherCast<T>(m)`     | casts matcher `m` to type `Matcher<T>`. |
+| `SafeMatcherCast<T>(m)` | [safely casts](cook_book.md#casting-matchers) matcher `m` to type `Matcher<T>`. |
+| `Truly(predicate)`      | `predicate(argument)` returns something considered by C++ to be true, where `predicate` is a function or functor. |
+<!-- mdformat on -->
+
+`AddressSatisfies(callback)` and `Truly(callback)` take ownership of `callback`,
+which must be a permanent callback.
+
+#### Using Matchers as Predicates {#MatchersAsPredicatesCheat}
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                       | Description                                 |
+| :---------------------------- | :------------------------------------------ |
+| `Matches(m)(value)` | evaluates to `true` if `value` matches `m`. You can use `Matches(m)` alone as a unary functor. |
+| `ExplainMatchResult(m, value, result_listener)` | evaluates to `true` if `value` matches `m`, explaining the result to `result_listener`. |
+| `Value(value, m)` | evaluates to `true` if `value` matches `m`. |
+<!-- mdformat on -->
+
+#### Defining Matchers
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher                              | Description                           |
+| :----------------------------------- | :------------------------------------ |
+| `MATCHER(IsEven, "") { return (arg % 2) == 0; }` | Defines a matcher `IsEven()` to match an even number. |
+| `MATCHER_P(IsDivisibleBy, n, "") { *result_listener << "where the remainder is " << (arg % n); return (arg % n) == 0; }` | Defines a macher `IsDivisibleBy(n)` to match a number divisible by `n`. |
+| `MATCHER_P2(IsBetween, a, b, std::string(negation ? "isn't" : "is") + " between " + PrintToString(a) + " and " + PrintToString(b)) { return a <= arg && arg <= b; }` | Defines a matcher `IsBetween(a, b)` to match a value in the range [`a`, `b`]. |
+<!-- mdformat on -->
+
+**Notes:**
+
+1.  The `MATCHER*` macros cannot be used inside a function or class.
+2.  The matcher body must be *purely functional* (i.e. it cannot have any side
+    effect, and the result must not depend on anything other than the value
+    being matched and the matcher parameters).
+3.  You can use `PrintToString(x)` to convert a value `x` of any type to a
+    string.
+
+### Actions {#ActionList}
+
+**Actions** specify what a mock function should do when invoked.
+
+#### Returning a Value
+
+<!-- mdformat off(no multiline tables) -->
+|                             |                                               |
+| :-------------------------- | :-------------------------------------------- |
+| `Return()`                  | Return from a `void` mock function.           |
+| `Return(value)`             | Return `value`. If the type of `value` is     different to the mock function's return type, `value` is converted to the latter type <i>at the time the expectation is set</i>, not when the action is executed. |
+| `ReturnArg<N>()`            | Return the `N`-th (0-based) argument.         |
+| `ReturnNew<T>(a1, ..., ak)` | Return `new T(a1, ..., ak)`; a different      object is created each time. |
+| `ReturnNull()`              | Return a null pointer.                        |
+| `ReturnPointee(ptr)`        | Return the value pointed to by `ptr`.         |
+| `ReturnRef(variable)`       | Return a reference to `variable`.             |
+| `ReturnRefOfCopy(value)`    | Return a reference to a copy of `value`; the  copy lives as long as the action. |
+<!-- mdformat on -->
+
+#### Side Effects
+
+<!-- mdformat off(no multiline tables) -->
+|                                    |                                         |
+| :--------------------------------- | :-------------------------------------- |
+| `Assign(&variable, value)` | Assign `value` to variable. |
+| `DeleteArg<N>()` | Delete the `N`-th (0-based) argument, which must be a pointer. |
+| `SaveArg<N>(pointer)` | Save the `N`-th (0-based) argument to `*pointer`. |
+| `SaveArgPointee<N>(pointer)` | Save the value pointed to by the `N`-th (0-based) argument to `*pointer`. |
+| `SetArgReferee<N>(value)` | Assign value to the variable referenced by the `N`-th (0-based) argument. |
+| `SetArgPointee<N>(value)` | Assign `value` to the variable pointed by the `N`-th (0-based) argument. |
+| `SetArgumentPointee<N>(value)` | Same as `SetArgPointee<N>(value)`. Deprecated. Will be removed in v1.7.0. |
+| `SetArrayArgument<N>(first, last)` | Copies the elements in source range [`first`, `last`) to the array pointed to by the `N`-th (0-based) argument, which can be either a pointer or an iterator. The action does not take ownership of the elements in the source range. |
+| `SetErrnoAndReturn(error, value)` | Set `errno` to `error` and return `value`. |
+| `Throw(exception)` | Throws the given exception, which can be any copyable value. Available since v1.1.0. |
+<!-- mdformat on -->
+
+#### Using a Function, Functor, or Lambda as an Action
+
+In the following, by "callable" we mean a free function, `std::function`,
+functor, or lambda.
+
+<!-- mdformat off(no multiline tables) -->
+|                                     |                                        |
+| :---------------------------------- | :------------------------------------- |
+| `f` | Invoke f with the arguments passed to the mock function, where f is a callable. |
+| `Invoke(f)` | Invoke `f` with the arguments passed to the mock function, where `f` can be a global/static function or a functor. |
+| `Invoke(object_pointer, &class::method)` | Invoke the method on the object with the arguments passed to the mock function. |
+| `InvokeWithoutArgs(f)` | Invoke `f`, which can be a global/static function or a functor. `f` must take no arguments. |
+| `InvokeWithoutArgs(object_pointer, &class::method)` | Invoke the method on the object, which takes no arguments. |
+| `InvokeArgument<N>(arg1, arg2, ..., argk)` | Invoke the mock function's `N`-th (0-based) argument, which must be a function or a functor, with the `k` arguments. |
+<!-- mdformat on -->
+
+The return value of the invoked function is used as the return value of the
+action.
+
+When defining a callable to be used with `Invoke*()`, you can declare any unused
+parameters as `Unused`:
+
+```cpp
+using ::testing::Invoke;
+double Distance(Unused, double x, double y) { return sqrt(x*x + y*y); }
+...
+EXPECT_CALL(mock, Foo("Hi", _, _)).WillOnce(Invoke(Distance));
+```
+
+`Invoke(callback)` and `InvokeWithoutArgs(callback)` take ownership of
+`callback`, which must be permanent. The type of `callback` must be a base
+callback type instead of a derived one, e.g.
+
+```cpp
+  BlockingClosure* done = new BlockingClosure;
+  ... Invoke(done) ...;  // This won't compile!
+
+  Closure* done2 = new BlockingClosure;
+  ... Invoke(done2) ...;  // This works.
+```
+
+In `InvokeArgument<N>(...)`, if an argument needs to be passed by reference,
+wrap it inside `ByRef()`. For example,
+
+```cpp
+using ::testing::ByRef;
+using ::testing::InvokeArgument;
+...
+InvokeArgument<2>(5, string("Hi"), ByRef(foo))
+```
+
+calls the mock function's #2 argument, passing to it `5` and `string("Hi")` by
+value, and `foo` by reference.
+
+#### Default Action
+
+<!-- mdformat off(no multiline tables) -->
+| Matcher       | Description                                            |
+| :------------ | :----------------------------------------------------- |
+| `DoDefault()` | Do the default action (specified by `ON_CALL()` or the built-in one). |
+<!-- mdformat on -->
+
+**Note:** due to technical reasons, `DoDefault()` cannot be used inside a
+composite action - trying to do so will result in a run-time error.
+
+<!-- GOOGLETEST_CM0032 DO NOT DELETE -->
+
+#### Composite Actions
+
+<!-- mdformat off(no multiline tables) -->
+|                                |                                             |
+| :----------------------------- | :------------------------------------------ |
+| `DoAll(a1, a2, ..., an)`       | Do all actions `a1` to `an` and return the result of `an` in each invocation. The first `n - 1` sub-actions must return void. |
+| `IgnoreResult(a)`              | Perform action `a` and ignore its result. `a` must not return void. |
+| `WithArg<N>(a)`                | Pass the `N`-th (0-based) argument of the mock function to action `a` and perform it. |
+| `WithArgs<N1, N2, ..., Nk>(a)` | Pass the selected (0-based) arguments of the mock function to action `a` and perform it. |
+| `WithoutArgs(a)`               | Perform action `a` without any arguments. |
+<!-- mdformat on -->
+
+#### Defining Actions
+
+<table border="1" cellspacing="0" cellpadding="1">
+  <tr>
+    <td>`struct SumAction {` <br>
+        &emsp;`template <typename T>` <br>
+        &emsp;`T operator()(T x, Ty) { return x + y; }` <br>
+        `};`
+    </td>
+    <td> Defines a generic functor that can be used as an action summing its
+    arguments. </td> </tr>
+  <tr>
+  </tr>
+</table>
+
+<!-- mdformat off(no multiline tables) -->
+|                                    |                                         |
+| :--------------------------------- | :-------------------------------------- |
+| `ACTION(Sum) { return arg0 + arg1; }` | Defines an action `Sum()` to return the sum of the mock function's argument #0 and #1. |
+| `ACTION_P(Plus, n) { return arg0 + n; }` | Defines an action `Plus(n)` to return the sum of the mock function's argument #0 and `n`. |
+| `ACTION_Pk(Foo, p1, ..., pk) { statements; }` | Defines a parameterized action `Foo(p1, ..., pk)` to execute the given `statements`. |
+<!-- mdformat on -->
+
+The `ACTION*` macros cannot be used inside a function or class.
+
+### Cardinalities {#CardinalityList}
+
+These are used in `Times()` to specify how many times a mock function will be
+called:
+
+<!-- mdformat off(no multiline tables) -->
+|                   |                                                        |
+| :---------------- | :----------------------------------------------------- |
+| `AnyNumber()`     | The function can be called any number of times.        |
+| `AtLeast(n)`      | The call is expected at least `n` times.               |
+| `AtMost(n)`       | The call is expected at most `n` times.                |
+| `Between(m, n)`   | The call is expected between `m` and `n` (inclusive) times. |
+| `Exactly(n) or n` | The call is expected exactly `n` times. In particular, the call should never happen when `n` is 0. |
+<!-- mdformat on -->
+
+### Expectation Order
+
+By default, the expectations can be matched in *any* order. If some or all
+expectations must be matched in a given order, there are two ways to specify it.
+They can be used either independently or together.
+
+#### The After Clause {#AfterClause}
+
+```cpp
+using ::testing::Expectation;
+...
+Expectation init_x = EXPECT_CALL(foo, InitX());
+Expectation init_y = EXPECT_CALL(foo, InitY());
+EXPECT_CALL(foo, Bar())
+     .After(init_x, init_y);
+```
+
+says that `Bar()` can be called only after both `InitX()` and `InitY()` have
+been called.
+
+If you don't know how many pre-requisites an expectation has when you write it,
+you can use an `ExpectationSet` to collect them:
+
+```cpp
+using ::testing::ExpectationSet;
+...
+ExpectationSet all_inits;
+for (int i = 0; i < element_count; i++) {
+  all_inits += EXPECT_CALL(foo, InitElement(i));
+}
+EXPECT_CALL(foo, Bar())
+     .After(all_inits);
+```
+
+says that `Bar()` can be called only after all elements have been initialized
+(but we don't care about which elements get initialized before the others).
+
+Modifying an `ExpectationSet` after using it in an `.After()` doesn't affect the
+meaning of the `.After()`.
+
+#### Sequences {#UsingSequences}
+
+When you have a long chain of sequential expectations, it's easier to specify
+the order using **sequences**, which don't require you to given each expectation
+in the chain a different name. *All expected calls* in the same sequence must
+occur in the order they are specified.
+
+```cpp
+using ::testing::Return;
+using ::testing::Sequence;
+Sequence s1, s2;
+...
+EXPECT_CALL(foo, Reset())
+    .InSequence(s1, s2)
+    .WillOnce(Return(true));
+EXPECT_CALL(foo, GetSize())
+    .InSequence(s1)
+    .WillOnce(Return(1));
+EXPECT_CALL(foo, Describe(A<const char*>()))
+    .InSequence(s2)
+    .WillOnce(Return("dummy"));
+```
+
+says that `Reset()` must be called before *both* `GetSize()` *and* `Describe()`,
+and the latter two can occur in any order.
+
+To put many expectations in a sequence conveniently:
+
+```cpp
+using ::testing::InSequence;
+{
+  InSequence seq;
+
+  EXPECT_CALL(...)...;
+  EXPECT_CALL(...)...;
+  ...
+  EXPECT_CALL(...)...;
+}
+```
+
+says that all expected calls in the scope of `seq` must occur in strict order.
+The name `seq` is irrelevant.
+
+### Verifying and Resetting a Mock
+
+gMock will verify the expectations on a mock object when it is destructed, or
+you can do it earlier:
+
+```cpp
+using ::testing::Mock;
+...
+// Verifies and removes the expectations on mock_obj;
+// returns true if and only if successful.
+Mock::VerifyAndClearExpectations(&mock_obj);
+...
+// Verifies and removes the expectations on mock_obj;
+// also removes the default actions set by ON_CALL();
+// returns true if and only if successful.
+Mock::VerifyAndClear(&mock_obj);
+```
+
+You can also tell gMock that a mock object can be leaked and doesn't need to be
+verified:
+
+```cpp
+Mock::AllowLeak(&mock_obj);
+```
+
+### Mock Classes
+
+gMock defines a convenient mock class template
+
+```cpp
+class MockFunction<R(A1, ..., An)> {
+ public:
+  MOCK_METHOD(R, Call, (A1, ..., An));
+};
+```
+
+See this [recipe](cook_book.md#using-check-points) for one application of it.
+
+### Flags
+
+<!-- mdformat off(no multiline tables) -->
+| Flag                           | Description                               |
+| :----------------------------- | :---------------------------------------- |
+| `--gmock_catch_leaked_mocks=0` | Don't report leaked mock objects as failures. |
+| `--gmock_verbose=LEVEL` | Sets the default verbosity level (`info`, `warning`, or `error`) of Google Mock messages. |
+<!-- mdformat on -->
diff --git a/build/_deps/googletest-src/googlemock/docs/cook_book.md b/build/_deps/googletest-src/googlemock/docs/cook_book.md
new file mode 100644
index 0000000000000000000000000000000000000000..ea55ab3583b5569dd843da4abbf2a3a20eabd2d1
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/docs/cook_book.md
@@ -0,0 +1,4270 @@
+# gMock Cookbook
+
+<!-- GOOGLETEST_CM0012 DO NOT DELETE -->
+
+You can find recipes for using gMock here. If you haven't yet, please read
+[this](for_dummies.md) first to make sure you understand the basics.
+
+**Note:** gMock lives in the `testing` name space. For readability, it is
+recommended to write `using ::testing::Foo;` once in your file before using the
+name `Foo` defined by gMock. We omit such `using` statements in this section for
+brevity, but you should do it in your own code.
+
+## Creating Mock Classes
+
+Mock classes are defined as normal classes, using the `MOCK_METHOD` macro to
+generate mocked methods. The macro gets 3 or 4 parameters:
+
+```cpp
+class MyMock {
+ public:
+  MOCK_METHOD(ReturnType, MethodName, (Args...));
+  MOCK_METHOD(ReturnType, MethodName, (Args...), (Specs...));
+};
+```
+
+The first 3 parameters are simply the method declaration, split into 3 parts.
+The 4th parameter accepts a closed list of qualifiers, which affect the
+generated method:
+
+*   **`const`** - Makes the mocked method a `const` method. Required if
+    overriding a `const` method.
+*   **`override`** - Marks the method with `override`. Recommended if overriding
+    a `virtual` method.
+*   **`noexcept`** - Marks the method with `noexcept`. Required if overriding a
+    `noexcept` method.
+*   **`Calltype(...)`** - Sets the call type for the method (e.g. to
+    `STDMETHODCALLTYPE`), useful in Windows.
+
+### Dealing with unprotected commas
+
+Unprotected commas, i.e. commas which are not surrounded by parentheses, prevent
+`MOCK_METHOD` from parsing its arguments correctly:
+
+```cpp {.bad}
+class MockFoo {
+ public:
+  MOCK_METHOD(std::pair<bool, int>, GetPair, ());  // Won't compile!
+  MOCK_METHOD(bool, CheckMap, (std::map<int, double>, bool));  // Won't compile!
+};
+```
+
+Solution 1 - wrap with parentheses:
+
+```cpp {.good}
+class MockFoo {
+ public:
+  MOCK_METHOD((std::pair<bool, int>), GetPair, ());
+  MOCK_METHOD(bool, CheckMap, ((std::map<int, double>), bool));
+};
+```
+
+Note that wrapping a return or argument type with parentheses is, in general,
+invalid C++. `MOCK_METHOD` removes the parentheses.
+
+Solution 2 - define an alias:
+
+```cpp {.good}
+class MockFoo {
+ public:
+  using BoolAndInt = std::pair<bool, int>;
+  MOCK_METHOD(BoolAndInt, GetPair, ());
+  using MapIntDouble = std::map<int, double>;
+  MOCK_METHOD(bool, CheckMap, (MapIntDouble, bool));
+};
+```
+
+### Mocking Private or Protected Methods
+
+You must always put a mock method definition (`MOCK_METHOD`) in a `public:`
+section of the mock class, regardless of the method being mocked being `public`,
+`protected`, or `private` in the base class. This allows `ON_CALL` and
+`EXPECT_CALL` to reference the mock function from outside of the mock class.
+(Yes, C++ allows a subclass to change the access level of a virtual function in
+the base class.) Example:
+
+```cpp
+class Foo {
+ public:
+  ...
+  virtual bool Transform(Gadget* g) = 0;
+
+ protected:
+  virtual void Resume();
+
+ private:
+  virtual int GetTimeOut();
+};
+
+class MockFoo : public Foo {
+ public:
+  ...
+  MOCK_METHOD(bool, Transform, (Gadget* g), (override));
+
+  // The following must be in the public section, even though the
+  // methods are protected or private in the base class.
+  MOCK_METHOD(void, Resume, (), (override));
+  MOCK_METHOD(int, GetTimeOut, (), (override));
+};
+```
+
+### Mocking Overloaded Methods
+
+You can mock overloaded functions as usual. No special attention is required:
+
+```cpp
+class Foo {
+  ...
+
+  // Must be virtual as we'll inherit from Foo.
+  virtual ~Foo();
+
+  // Overloaded on the types and/or numbers of arguments.
+  virtual int Add(Element x);
+  virtual int Add(int times, Element x);
+
+  // Overloaded on the const-ness of this object.
+  virtual Bar& GetBar();
+  virtual const Bar& GetBar() const;
+};
+
+class MockFoo : public Foo {
+  ...
+  MOCK_METHOD(int, Add, (Element x), (override));
+  MOCK_METHOD(int, Add, (int times, Element x), (override));
+
+  MOCK_METHOD(Bar&, GetBar, (), (override));
+  MOCK_METHOD(const Bar&, GetBar, (), (const, override));
+};
+```
+
+**Note:** if you don't mock all versions of the overloaded method, the compiler
+will give you a warning about some methods in the base class being hidden. To
+fix that, use `using` to bring them in scope:
+
+```cpp
+class MockFoo : public Foo {
+  ...
+  using Foo::Add;
+  MOCK_METHOD(int, Add, (Element x), (override));
+  // We don't want to mock int Add(int times, Element x);
+  ...
+};
+```
+
+### Mocking Class Templates
+
+You can mock class templates just like any class.
+
+```cpp
+template <typename Elem>
+class StackInterface {
+  ...
+  // Must be virtual as we'll inherit from StackInterface.
+  virtual ~StackInterface();
+
+  virtual int GetSize() const = 0;
+  virtual void Push(const Elem& x) = 0;
+};
+
+template <typename Elem>
+class MockStack : public StackInterface<Elem> {
+  ...
+  MOCK_METHOD(int, GetSize, (), (override));
+  MOCK_METHOD(void, Push, (const Elem& x), (override));
+};
+```
+
+### Mocking Non-virtual Methods {#MockingNonVirtualMethods}
+
+gMock can mock non-virtual functions to be used in Hi-perf dependency
+injection.<!-- GOOGLETEST_CM0017 DO NOT DELETE -->
+
+In this case, instead of sharing a common base class with the real class, your
+mock class will be *unrelated* to the real class, but contain methods with the
+same signatures. The syntax for mocking non-virtual methods is the *same* as
+mocking virtual methods (just don't add `override`):
+
+```cpp
+// A simple packet stream class.  None of its members is virtual.
+class ConcretePacketStream {
+ public:
+  void AppendPacket(Packet* new_packet);
+  const Packet* GetPacket(size_t packet_number) const;
+  size_t NumberOfPackets() const;
+  ...
+};
+
+// A mock packet stream class.  It inherits from no other, but defines
+// GetPacket() and NumberOfPackets().
+class MockPacketStream {
+ public:
+  MOCK_METHOD(const Packet*, GetPacket, (size_t packet_number), (const));
+  MOCK_METHOD(size_t, NumberOfPackets, (), (const));
+  ...
+};
+```
+
+Note that the mock class doesn't define `AppendPacket()`, unlike the real class.
+That's fine as long as the test doesn't need to call it.
+
+Next, you need a way to say that you want to use `ConcretePacketStream` in
+production code, and use `MockPacketStream` in tests. Since the functions are
+not virtual and the two classes are unrelated, you must specify your choice at
+*compile time* (as opposed to run time).
+
+One way to do it is to templatize your code that needs to use a packet stream.
+More specifically, you will give your code a template type argument for the type
+of the packet stream. In production, you will instantiate your template with
+`ConcretePacketStream` as the type argument. In tests, you will instantiate the
+same template with `MockPacketStream`. For example, you may write:
+
+```cpp
+template <class PacketStream>
+void CreateConnection(PacketStream* stream) { ... }
+
+template <class PacketStream>
+class PacketReader {
+ public:
+  void ReadPackets(PacketStream* stream, size_t packet_num);
+};
+```
+
+Then you can use `CreateConnection<ConcretePacketStream>()` and
+`PacketReader<ConcretePacketStream>` in production code, and use
+`CreateConnection<MockPacketStream>()` and `PacketReader<MockPacketStream>` in
+tests.
+
+```cpp
+  MockPacketStream mock_stream;
+  EXPECT_CALL(mock_stream, ...)...;
+  .. set more expectations on mock_stream ...
+  PacketReader<MockPacketStream> reader(&mock_stream);
+  ... exercise reader ...
+```
+
+### Mocking Free Functions
+
+It's possible to use gMock to mock a free function (i.e. a C-style function or a
+static method). You just need to rewrite your code to use an interface (abstract
+class).
+
+Instead of calling a free function (say, `OpenFile`) directly, introduce an
+interface for it and have a concrete subclass that calls the free function:
+
+```cpp
+class FileInterface {
+ public:
+  ...
+  virtual bool Open(const char* path, const char* mode) = 0;
+};
+
+class File : public FileInterface {
+ public:
+  ...
+  virtual bool Open(const char* path, const char* mode) {
+     return OpenFile(path, mode);
+  }
+};
+```
+
+Your code should talk to `FileInterface` to open a file. Now it's easy to mock
+out the function.
+
+This may seem like a lot of hassle, but in practice you often have multiple
+related functions that you can put in the same interface, so the per-function
+syntactic overhead will be much lower.
+
+If you are concerned about the performance overhead incurred by virtual
+functions, and profiling confirms your concern, you can combine this with the
+recipe for [mocking non-virtual methods](#MockingNonVirtualMethods).
+
+### Old-Style `MOCK_METHODn` Macros
+
+Before the generic `MOCK_METHOD` macro was introduced, mocks where created using
+a family of macros collectively called `MOCK_METHODn`. These macros are still
+supported, though migration to the new `MOCK_METHOD` is recommended.
+
+The macros in the `MOCK_METHODn` family differ from `MOCK_METHOD`:
+
+*   The general structure is `MOCK_METHODn(MethodName, ReturnType(Args))`,
+    instead of `MOCK_METHOD(ReturnType, MethodName, (Args))`.
+*   The number `n` must equal the number of arguments.
+*   When mocking a const method, one must use `MOCK_CONST_METHODn`.
+*   When mocking a class template, the macro name must be suffixed with `_T`.
+*   In order to specify the call type, the macro name must be suffixed with
+    `_WITH_CALLTYPE`, and the call type is the first macro argument.
+
+Old macros and their new equivalents:
+
+<a name="table99"></a>
+<table border="1" cellspacing="0" cellpadding="1">
+<tr> <th colspan=2> Simple </th></tr>
+<tr> <td> Old </td> <td> `MOCK_METHOD1(Foo, bool(int))` </td> </tr>
+<tr> <td> New </td> <td> `MOCK_METHOD(bool, Foo, (int))` </td> </tr>
+
+<tr> <th colspan=2> Const Method </th></tr> <tr> <td> Old </td> <td>
+`MOCK_CONST_METHOD1(Foo, bool(int))` </td> </tr> <tr> <td> New </td> <td>
+`MOCK_METHOD(bool, Foo, (int), (const))` </td> </tr>
+
+<tr> <th colspan=2> Method in a Class Template </th></tr> <tr> <td> Old </td>
+<td> `MOCK_METHOD1_T(Foo, bool(int))` </td> </tr> <tr> <td> New </td> <td>
+`MOCK_METHOD(bool, Foo, (int))` </td> </tr>
+
+<tr> <th colspan=2> Const Method in a Class Template </th></tr> <tr> <td> Old
+</td> <td> `MOCK_CONST_METHOD1_T(Foo, bool(int))` </td> </tr> <tr> <td> New
+</td> <td> `MOCK_METHOD(bool, Foo, (int), (const))` </td> </tr>
+
+<tr> <th colspan=2> Method with Call Type </th></tr> <tr> <td> Old </td> <td>
+`MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, Foo, bool(int))` </td> </tr> <tr>
+<td> New </td> <td> `MOCK_METHOD(bool, Foo, (int),
+(Calltype(STDMETHODCALLTYPE)))` </td> </tr>
+
+<tr> <th colspan=2> Const Method with Call Type </th></tr> <tr> <td> Old</td>
+<td> `MOCK_CONST_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, Foo, bool(int))` </td>
+</tr> <tr> <td> New </td> <td> `MOCK_METHOD(bool, Foo, (int), (const,
+Calltype(STDMETHODCALLTYPE)))` </td> </tr>
+
+<tr> <th colspan=2> Method with Call Type in a Class Template </th></tr> <tr>
+<td> Old </td> <td> `MOCK_METHOD1_T_WITH_CALLTYPE(STDMETHODCALLTYPE, Foo,
+bool(int))` </td> </tr> <tr> <td> New </td> <td> `MOCK_METHOD(bool, Foo, (int),
+(Calltype(STDMETHODCALLTYPE)))` </td> </tr>
+
+<tr> <th colspan=2> Const Method with Call Type in a Class Template </th></tr>
+<tr> <td> Old </td> <td> `MOCK_CONST_METHOD1_T_WITH_CALLTYPE(STDMETHODCALLTYPE,
+Foo, bool(int))` </td> </tr> <tr> <td> New </td> <td> `MOCK_METHOD(bool, Foo,
+(int), (const, Calltype(STDMETHODCALLTYPE)))` </td> </tr>
+
+</table>
+
+### The Nice, the Strict, and the Naggy {#NiceStrictNaggy}
+
+If a mock method has no `EXPECT_CALL` spec but is called, we say that it's an
+"uninteresting call", and the default action (which can be specified using
+`ON_CALL()`) of the method will be taken. Currently, an uninteresting call will
+also by default cause gMock to print a warning. (In the future, we might remove
+this warning by default.)
+
+However, sometimes you may want to ignore these uninteresting calls, and
+sometimes you may want to treat them as errors. gMock lets you make the decision
+on a per-mock-object basis.
+
+Suppose your test uses a mock class `MockFoo`:
+
+```cpp
+TEST(...) {
+  MockFoo mock_foo;
+  EXPECT_CALL(mock_foo, DoThis());
+  ... code that uses mock_foo ...
+}
+```
+
+If a method of `mock_foo` other than `DoThis()` is called, you will get a
+warning. However, if you rewrite your test to use `NiceMock<MockFoo>` instead,
+you can suppress the warning:
+
+```cpp
+using ::testing::NiceMock;
+
+TEST(...) {
+  NiceMock<MockFoo> mock_foo;
+  EXPECT_CALL(mock_foo, DoThis());
+  ... code that uses mock_foo ...
+}
+```
+
+`NiceMock<MockFoo>` is a subclass of `MockFoo`, so it can be used wherever
+`MockFoo` is accepted.
+
+It also works if `MockFoo`'s constructor takes some arguments, as
+`NiceMock<MockFoo>` "inherits" `MockFoo`'s constructors:
+
+```cpp
+using ::testing::NiceMock;
+
+TEST(...) {
+  NiceMock<MockFoo> mock_foo(5, "hi");  // Calls MockFoo(5, "hi").
+  EXPECT_CALL(mock_foo, DoThis());
+  ... code that uses mock_foo ...
+}
+```
+
+The usage of `StrictMock` is similar, except that it makes all uninteresting
+calls failures:
+
+```cpp
+using ::testing::StrictMock;
+
+TEST(...) {
+  StrictMock<MockFoo> mock_foo;
+  EXPECT_CALL(mock_foo, DoThis());
+  ... code that uses mock_foo ...
+
+  // The test will fail if a method of mock_foo other than DoThis()
+  // is called.
+}
+```
+
+NOTE: `NiceMock` and `StrictMock` only affects *uninteresting* calls (calls of
+*methods* with no expectations); they do not affect *unexpected* calls (calls of
+methods with expectations, but they don't match). See
+[Understanding Uninteresting vs Unexpected Calls](#uninteresting-vs-unexpected).
+
+There are some caveats though (I dislike them just as much as the next guy, but
+sadly they are side effects of C++'s limitations):
+
+1.  `NiceMock<MockFoo>` and `StrictMock<MockFoo>` only work for mock methods
+    defined using the `MOCK_METHOD` macro **directly** in the `MockFoo` class.
+    If a mock method is defined in a **base class** of `MockFoo`, the "nice" or
+    "strict" modifier may not affect it, depending on the compiler. In
+    particular, nesting `NiceMock` and `StrictMock` (e.g.
+    `NiceMock<StrictMock<MockFoo> >`) is **not** supported.
+2.  `NiceMock<MockFoo>` and `StrictMock<MockFoo>` may not work correctly if the
+    destructor of `MockFoo` is not virtual. We would like to fix this, but it
+    requires cleaning up existing tests. http://b/28934720 tracks the issue.
+3.  During the constructor or destructor of `MockFoo`, the mock object is *not*
+    nice or strict. This may cause surprises if the constructor or destructor
+    calls a mock method on `this` object. (This behavior, however, is consistent
+    with C++'s general rule: if a constructor or destructor calls a virtual
+    method of `this` object, that method is treated as non-virtual. In other
+    words, to the base class's constructor or destructor, `this` object behaves
+    like an instance of the base class, not the derived class. This rule is
+    required for safety. Otherwise a base constructor may use members of a
+    derived class before they are initialized, or a base destructor may use
+    members of a derived class after they have been destroyed.)
+
+Finally, you should be **very cautious** about when to use naggy or strict
+mocks, as they tend to make tests more brittle and harder to maintain. When you
+refactor your code without changing its externally visible behavior, ideally you
+shouldn't need to update any tests. If your code interacts with a naggy mock,
+however, you may start to get spammed with warnings as the result of your
+change. Worse, if your code interacts with a strict mock, your tests may start
+to fail and you'll be forced to fix them. Our general recommendation is to use
+nice mocks (not yet the default) most of the time, use naggy mocks (the current
+default) when developing or debugging tests, and use strict mocks only as the
+last resort.
+
+### Simplifying the Interface without Breaking Existing Code {#SimplerInterfaces}
+
+Sometimes a method has a long list of arguments that is mostly uninteresting.
+For example:
+
+```cpp
+class LogSink {
+ public:
+  ...
+  virtual void send(LogSeverity severity, const char* full_filename,
+                    const char* base_filename, int line,
+                    const struct tm* tm_time,
+                    const char* message, size_t message_len) = 0;
+};
+```
+
+This method's argument list is lengthy and hard to work with (the `message`
+argument is not even 0-terminated). If we mock it as is, using the mock will be
+awkward. If, however, we try to simplify this interface, we'll need to fix all
+clients depending on it, which is often infeasible.
+
+The trick is to redispatch the method in the mock class:
+
+```cpp
+class ScopedMockLog : public LogSink {
+ public:
+  ...
+  virtual void send(LogSeverity severity, const char* full_filename,
+                    const char* base_filename, int line, const tm* tm_time,
+                    const char* message, size_t message_len) {
+    // We are only interested in the log severity, full file name, and
+    // log message.
+    Log(severity, full_filename, std::string(message, message_len));
+  }
+
+  // Implements the mock method:
+  //
+  //   void Log(LogSeverity severity,
+  //            const string& file_path,
+  //            const string& message);
+  MOCK_METHOD(void, Log,
+              (LogSeverity severity, const string& file_path,
+               const string& message));
+};
+```
+
+By defining a new mock method with a trimmed argument list, we make the mock
+class more user-friendly.
+
+This technique may also be applied to make overloaded methods more amenable to
+mocking. For example, when overloads have been used to implement default
+arguments:
+
+```cpp
+class MockTurtleFactory : public TurtleFactory {
+ public:
+  Turtle* MakeTurtle(int length, int weight) override { ... }
+  Turtle* MakeTurtle(int length, int weight, int speed) override { ... }
+
+  // the above methods delegate to this one:
+  MOCK_METHOD(Turtle*, DoMakeTurtle, ());
+};
+```
+
+This allows tests that don't care which overload was invoked to avoid specifying
+argument matchers:
+
+```cpp
+ON_CALL(factory, DoMakeTurtle)
+    .WillByDefault(MakeMockTurtle());
+```
+
+### Alternative to Mocking Concrete Classes
+
+Often you may find yourself using classes that don't implement interfaces. In
+order to test your code that uses such a class (let's call it `Concrete`), you
+may be tempted to make the methods of `Concrete` virtual and then mock it.
+
+Try not to do that.
+
+Making a non-virtual function virtual is a big decision. It creates an extension
+point where subclasses can tweak your class' behavior. This weakens your control
+on the class because now it's harder to maintain the class invariants. You
+should make a function virtual only when there is a valid reason for a subclass
+to override it.
+
+Mocking concrete classes directly is problematic as it creates a tight coupling
+between the class and the tests - any small change in the class may invalidate
+your tests and make test maintenance a pain.
+
+To avoid such problems, many programmers have been practicing "coding to
+interfaces": instead of talking to the `Concrete` class, your code would define
+an interface and talk to it. Then you implement that interface as an adaptor on
+top of `Concrete`. In tests, you can easily mock that interface to observe how
+your code is doing.
+
+This technique incurs some overhead:
+
+*   You pay the cost of virtual function calls (usually not a problem).
+*   There is more abstraction for the programmers to learn.
+
+However, it can also bring significant benefits in addition to better
+testability:
+
+*   `Concrete`'s API may not fit your problem domain very well, as you may not
+    be the only client it tries to serve. By designing your own interface, you
+    have a chance to tailor it to your need - you may add higher-level
+    functionalities, rename stuff, etc instead of just trimming the class. This
+    allows you to write your code (user of the interface) in a more natural way,
+    which means it will be more readable, more maintainable, and you'll be more
+    productive.
+*   If `Concrete`'s implementation ever has to change, you don't have to rewrite
+    everywhere it is used. Instead, you can absorb the change in your
+    implementation of the interface, and your other code and tests will be
+    insulated from this change.
+
+Some people worry that if everyone is practicing this technique, they will end
+up writing lots of redundant code. This concern is totally understandable.
+However, there are two reasons why it may not be the case:
+
+*   Different projects may need to use `Concrete` in different ways, so the best
+    interfaces for them will be different. Therefore, each of them will have its
+    own domain-specific interface on top of `Concrete`, and they will not be the
+    same code.
+*   If enough projects want to use the same interface, they can always share it,
+    just like they have been sharing `Concrete`. You can check in the interface
+    and the adaptor somewhere near `Concrete` (perhaps in a `contrib`
+    sub-directory) and let many projects use it.
+
+You need to weigh the pros and cons carefully for your particular problem, but
+I'd like to assure you that the Java community has been practicing this for a
+long time and it's a proven effective technique applicable in a wide variety of
+situations. :-)
+
+### Delegating Calls to a Fake {#DelegatingToFake}
+
+Some times you have a non-trivial fake implementation of an interface. For
+example:
+
+```cpp
+class Foo {
+ public:
+  virtual ~Foo() {}
+  virtual char DoThis(int n) = 0;
+  virtual void DoThat(const char* s, int* p) = 0;
+};
+
+class FakeFoo : public Foo {
+ public:
+  char DoThis(int n) override {
+    return (n > 0) ? '+' :
+           (n < 0) ? '-' : '0';
+  }
+
+  void DoThat(const char* s, int* p) override {
+    *p = strlen(s);
+  }
+};
+```
+
+Now you want to mock this interface such that you can set expectations on it.
+However, you also want to use `FakeFoo` for the default behavior, as duplicating
+it in the mock object is, well, a lot of work.
+
+When you define the mock class using gMock, you can have it delegate its default
+action to a fake class you already have, using this pattern:
+
+```cpp
+class MockFoo : public Foo {
+ public:
+  // Normal mock method definitions using gMock.
+  MOCK_METHOD(char, DoThis, (int n), (override));
+  MOCK_METHOD(void, DoThat, (const char* s, int* p), (override));
+
+  // Delegates the default actions of the methods to a FakeFoo object.
+  // This must be called *before* the custom ON_CALL() statements.
+  void DelegateToFake() {
+    ON_CALL(*this, DoThis).WillByDefault([this](int n) {
+      return fake_.DoThis(n);
+    });
+    ON_CALL(*this, DoThat).WillByDefault([this](const char* s, int* p) {
+      fake_.DoThat(s, p);
+    });
+  }
+
+ private:
+  FakeFoo fake_;  // Keeps an instance of the fake in the mock.
+};
+```
+
+With that, you can use `MockFoo` in your tests as usual. Just remember that if
+you don't explicitly set an action in an `ON_CALL()` or `EXPECT_CALL()`, the
+fake will be called upon to do it.:
+
+```cpp
+using ::testing::_;
+
+TEST(AbcTest, Xyz) {
+  MockFoo foo;
+
+  foo.DelegateToFake();  // Enables the fake for delegation.
+
+  // Put your ON_CALL(foo, ...)s here, if any.
+
+  // No action specified, meaning to use the default action.
+  EXPECT_CALL(foo, DoThis(5));
+  EXPECT_CALL(foo, DoThat(_, _));
+
+  int n = 0;
+  EXPECT_EQ('+', foo.DoThis(5));  // FakeFoo::DoThis() is invoked.
+  foo.DoThat("Hi", &n);  // FakeFoo::DoThat() is invoked.
+  EXPECT_EQ(2, n);
+}
+```
+
+**Some tips:**
+
+*   If you want, you can still override the default action by providing your own
+    `ON_CALL()` or using `.WillOnce()` / `.WillRepeatedly()` in `EXPECT_CALL()`.
+*   In `DelegateToFake()`, you only need to delegate the methods whose fake
+    implementation you intend to use.
+
+*   The general technique discussed here works for overloaded methods, but
+    you'll need to tell the compiler which version you mean. To disambiguate a
+    mock function (the one you specify inside the parentheses of `ON_CALL()`),
+    use [this technique](#SelectOverload); to disambiguate a fake function (the
+    one you place inside `Invoke()`), use a `static_cast` to specify the
+    function's type. For instance, if class `Foo` has methods `char DoThis(int
+    n)` and `bool DoThis(double x) const`, and you want to invoke the latter,
+    you need to write `Invoke(&fake_, static_cast<bool (FakeFoo::*)(double)
+    const>(&FakeFoo::DoThis))` instead of `Invoke(&fake_, &FakeFoo::DoThis)`
+    (The strange-looking thing inside the angled brackets of `static_cast` is
+    the type of a function pointer to the second `DoThis()` method.).
+
+*   Having to mix a mock and a fake is often a sign of something gone wrong.
+    Perhaps you haven't got used to the interaction-based way of testing yet. Or
+    perhaps your interface is taking on too many roles and should be split up.
+    Therefore, **don't abuse this**. We would only recommend to do it as an
+    intermediate step when you are refactoring your code.
+
+Regarding the tip on mixing a mock and a fake, here's an example on why it may
+be a bad sign: Suppose you have a class `System` for low-level system
+operations. In particular, it does file and I/O operations. And suppose you want
+to test how your code uses `System` to do I/O, and you just want the file
+operations to work normally. If you mock out the entire `System` class, you'll
+have to provide a fake implementation for the file operation part, which
+suggests that `System` is taking on too many roles.
+
+Instead, you can define a `FileOps` interface and an `IOOps` interface and split
+`System`'s functionalities into the two. Then you can mock `IOOps` without
+mocking `FileOps`.
+
+### Delegating Calls to a Real Object
+
+When using testing doubles (mocks, fakes, stubs, and etc), sometimes their
+behaviors will differ from those of the real objects. This difference could be
+either intentional (as in simulating an error such that you can test the error
+handling code) or unintentional. If your mocks have different behaviors than the
+real objects by mistake, you could end up with code that passes the tests but
+fails in production.
+
+You can use the *delegating-to-real* technique to ensure that your mock has the
+same behavior as the real object while retaining the ability to validate calls.
+This technique is very similar to the [delegating-to-fake](#DelegatingToFake)
+technique, the difference being that we use a real object instead of a fake.
+Here's an example:
+
+```cpp
+using ::testing::AtLeast;
+
+class MockFoo : public Foo {
+ public:
+  MockFoo() {
+    // By default, all calls are delegated to the real object.
+    ON_CALL(*this, DoThis).WillByDefault([this](int n) {
+      return real_.DoThis(n);
+    });
+    ON_CALL(*this, DoThat).WillByDefault([this](const char* s, int* p) {
+      real_.DoThat(s, p);
+    });
+    ...
+  }
+  MOCK_METHOD(char, DoThis, ...);
+  MOCK_METHOD(void, DoThat, ...);
+  ...
+ private:
+  Foo real_;
+};
+
+...
+  MockFoo mock;
+  EXPECT_CALL(mock, DoThis())
+      .Times(3);
+  EXPECT_CALL(mock, DoThat("Hi"))
+      .Times(AtLeast(1));
+  ... use mock in test ...
+```
+
+With this, gMock will verify that your code made the right calls (with the right
+arguments, in the right order, called the right number of times, etc), and a
+real object will answer the calls (so the behavior will be the same as in
+production). This gives you the best of both worlds.
+
+### Delegating Calls to a Parent Class
+
+Ideally, you should code to interfaces, whose methods are all pure virtual. In
+reality, sometimes you do need to mock a virtual method that is not pure (i.e,
+it already has an implementation). For example:
+
+```cpp
+class Foo {
+ public:
+  virtual ~Foo();
+
+  virtual void Pure(int n) = 0;
+  virtual int Concrete(const char* str) { ... }
+};
+
+class MockFoo : public Foo {
+ public:
+  // Mocking a pure method.
+  MOCK_METHOD(void, Pure, (int n), (override));
+  // Mocking a concrete method.  Foo::Concrete() is shadowed.
+  MOCK_METHOD(int, Concrete, (const char* str), (override));
+};
+```
+
+Sometimes you may want to call `Foo::Concrete()` instead of
+`MockFoo::Concrete()`. Perhaps you want to do it as part of a stub action, or
+perhaps your test doesn't need to mock `Concrete()` at all (but it would be
+oh-so painful to have to define a new mock class whenever you don't need to mock
+one of its methods).
+
+The trick is to leave a back door in your mock class for accessing the real
+methods in the base class:
+
+```cpp
+class MockFoo : public Foo {
+ public:
+  // Mocking a pure method.
+  MOCK_METHOD(void, Pure, (int n), (override));
+  // Mocking a concrete method.  Foo::Concrete() is shadowed.
+  MOCK_METHOD(int, Concrete, (const char* str), (override));
+
+  // Use this to call Concrete() defined in Foo.
+  int FooConcrete(const char* str) { return Foo::Concrete(str); }
+};
+```
+
+Now, you can call `Foo::Concrete()` inside an action by:
+
+```cpp
+...
+  EXPECT_CALL(foo, Concrete).WillOnce([&foo](const char* str) {
+    return foo.FooConcrete(str);
+  });
+```
+
+or tell the mock object that you don't want to mock `Concrete()`:
+
+```cpp
+...
+  ON_CALL(foo, Concrete).WillByDefault([&foo](const char* str) {
+    return foo.FooConcrete(str);
+  });
+```
+
+(Why don't we just write `{ return foo.Concrete(str); }`? If you do that,
+`MockFoo::Concrete()` will be called (and cause an infinite recursion) since
+`Foo::Concrete()` is virtual. That's just how C++ works.)
+
+## Using Matchers
+
+### Matching Argument Values Exactly
+
+You can specify exactly which arguments a mock method is expecting:
+
+```cpp
+using ::testing::Return;
+...
+  EXPECT_CALL(foo, DoThis(5))
+      .WillOnce(Return('a'));
+  EXPECT_CALL(foo, DoThat("Hello", bar));
+```
+
+### Using Simple Matchers
+
+You can use matchers to match arguments that have a certain property:
+
+```cpp
+using ::testing::NotNull;
+using ::testing::Return;
+...
+  EXPECT_CALL(foo, DoThis(Ge(5)))  // The argument must be >= 5.
+      .WillOnce(Return('a'));
+  EXPECT_CALL(foo, DoThat("Hello", NotNull()));
+      // The second argument must not be NULL.
+```
+
+A frequently used matcher is `_`, which matches anything:
+
+```cpp
+  EXPECT_CALL(foo, DoThat(_, NotNull()));
+```
+<!-- GOOGLETEST_CM0022 DO NOT DELETE -->
+
+### Combining Matchers {#CombiningMatchers}
+
+You can build complex matchers from existing ones using `AllOf()`,
+`AllOfArray()`, `AnyOf()`, `AnyOfArray()` and `Not()`:
+
+```cpp
+using ::testing::AllOf;
+using ::testing::Gt;
+using ::testing::HasSubstr;
+using ::testing::Ne;
+using ::testing::Not;
+...
+  // The argument must be > 5 and != 10.
+  EXPECT_CALL(foo, DoThis(AllOf(Gt(5),
+                                Ne(10))));
+
+  // The first argument must not contain sub-string "blah".
+  EXPECT_CALL(foo, DoThat(Not(HasSubstr("blah")),
+                          NULL));
+```
+
+### Casting Matchers {#SafeMatcherCast}
+
+gMock matchers are statically typed, meaning that the compiler can catch your
+mistake if you use a matcher of the wrong type (for example, if you use `Eq(5)`
+to match a `string` argument). Good for you!
+
+Sometimes, however, you know what you're doing and want the compiler to give you
+some slack. One example is that you have a matcher for `long` and the argument
+you want to match is `int`. While the two types aren't exactly the same, there
+is nothing really wrong with using a `Matcher<long>` to match an `int` - after
+all, we can first convert the `int` argument to a `long` losslessly before
+giving it to the matcher.
+
+To support this need, gMock gives you the `SafeMatcherCast<T>(m)` function. It
+casts a matcher `m` to type `Matcher<T>`. To ensure safety, gMock checks that
+(let `U` be the type `m` accepts :
+
+1.  Type `T` can be *implicitly* cast to type `U`;
+2.  When both `T` and `U` are built-in arithmetic types (`bool`, integers, and
+    floating-point numbers), the conversion from `T` to `U` is not lossy (in
+    other words, any value representable by `T` can also be represented by `U`);
+    and
+3.  When `U` is a reference, `T` must also be a reference (as the underlying
+    matcher may be interested in the address of the `U` value).
+
+The code won't compile if any of these conditions isn't met.
+
+Here's one example:
+
+```cpp
+using ::testing::SafeMatcherCast;
+
+// A base class and a child class.
+class Base { ... };
+class Derived : public Base { ... };
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(void, DoThis, (Derived* derived), (override));
+};
+
+...
+  MockFoo foo;
+  // m is a Matcher<Base*> we got from somewhere.
+  EXPECT_CALL(foo, DoThis(SafeMatcherCast<Derived*>(m)));
+```
+
+If you find `SafeMatcherCast<T>(m)` too limiting, you can use a similar function
+`MatcherCast<T>(m)`. The difference is that `MatcherCast` works as long as you
+can `static_cast` type `T` to type `U`.
+
+`MatcherCast` essentially lets you bypass C++'s type system (`static_cast` isn't
+always safe as it could throw away information, for example), so be careful not
+to misuse/abuse it.
+
+### Selecting Between Overloaded Functions {#SelectOverload}
+
+If you expect an overloaded function to be called, the compiler may need some
+help on which overloaded version it is.
+
+To disambiguate functions overloaded on the const-ness of this object, use the
+`Const()` argument wrapper.
+
+```cpp
+using ::testing::ReturnRef;
+
+class MockFoo : public Foo {
+  ...
+  MOCK_METHOD(Bar&, GetBar, (), (override));
+  MOCK_METHOD(const Bar&, GetBar, (), (const, override));
+};
+
+...
+  MockFoo foo;
+  Bar bar1, bar2;
+  EXPECT_CALL(foo, GetBar())         // The non-const GetBar().
+      .WillOnce(ReturnRef(bar1));
+  EXPECT_CALL(Const(foo), GetBar())  // The const GetBar().
+      .WillOnce(ReturnRef(bar2));
+```
+
+(`Const()` is defined by gMock and returns a `const` reference to its argument.)
+
+To disambiguate overloaded functions with the same number of arguments but
+different argument types, you may need to specify the exact type of a matcher,
+either by wrapping your matcher in `Matcher<type>()`, or using a matcher whose
+type is fixed (`TypedEq<type>`, `An<type>()`, etc):
+
+```cpp
+using ::testing::An;
+using ::testing::Matcher;
+using ::testing::TypedEq;
+
+class MockPrinter : public Printer {
+ public:
+  MOCK_METHOD(void, Print, (int n), (override));
+  MOCK_METHOD(void, Print, (char c), (override));
+};
+
+TEST(PrinterTest, Print) {
+  MockPrinter printer;
+
+  EXPECT_CALL(printer, Print(An<int>()));            // void Print(int);
+  EXPECT_CALL(printer, Print(Matcher<int>(Lt(5))));  // void Print(int);
+  EXPECT_CALL(printer, Print(TypedEq<char>('a')));   // void Print(char);
+
+  printer.Print(3);
+  printer.Print(6);
+  printer.Print('a');
+}
+```
+
+### Performing Different Actions Based on the Arguments
+
+When a mock method is called, the *last* matching expectation that's still
+active will be selected (think "newer overrides older"). So, you can make a
+method do different things depending on its argument values like this:
+
+```cpp
+using ::testing::_;
+using ::testing::Lt;
+using ::testing::Return;
+...
+  // The default case.
+  EXPECT_CALL(foo, DoThis(_))
+      .WillRepeatedly(Return('b'));
+  // The more specific case.
+  EXPECT_CALL(foo, DoThis(Lt(5)))
+      .WillRepeatedly(Return('a'));
+```
+
+Now, if `foo.DoThis()` is called with a value less than 5, `'a'` will be
+returned; otherwise `'b'` will be returned.
+
+### Matching Multiple Arguments as a Whole
+
+Sometimes it's not enough to match the arguments individually. For example, we
+may want to say that the first argument must be less than the second argument.
+The `With()` clause allows us to match all arguments of a mock function as a
+whole. For example,
+
+```cpp
+using ::testing::_;
+using ::testing::Ne;
+using ::testing::Lt;
+...
+  EXPECT_CALL(foo, InRange(Ne(0), _))
+      .With(Lt());
+```
+
+says that the first argument of `InRange()` must not be 0, and must be less than
+the second argument.
+
+The expression inside `With()` must be a matcher of type
+`Matcher< ::std::tuple<A1, ..., An> >`, where `A1`, ..., `An` are the types of
+the function arguments.
+
+You can also write `AllArgs(m)` instead of `m` inside `.With()`. The two forms
+are equivalent, but `.With(AllArgs(Lt()))` is more readable than `.With(Lt())`.
+
+You can use `Args<k1, ..., kn>(m)` to match the `n` selected arguments (as a
+tuple) against `m`. For example,
+
+```cpp
+using ::testing::_;
+using ::testing::AllOf;
+using ::testing::Args;
+using ::testing::Lt;
+...
+  EXPECT_CALL(foo, Blah)
+      .With(AllOf(Args<0, 1>(Lt()), Args<1, 2>(Lt())));
+```
+
+says that `Blah` will be called with arguments `x`, `y`, and `z` where `x < y <
+z`. Note that in this example, it wasn't necessary specify the positional
+matchers.
+
+As a convenience and example, gMock provides some matchers for 2-tuples,
+including the `Lt()` matcher above. See [here](#MultiArgMatchers) for the
+complete list.
+
+Note that if you want to pass the arguments to a predicate of your own (e.g.
+`.With(Args<0, 1>(Truly(&MyPredicate)))`), that predicate MUST be written to
+take a `::std::tuple` as its argument; gMock will pass the `n` selected
+arguments as *one* single tuple to the predicate.
+
+### Using Matchers as Predicates
+
+Have you noticed that a matcher is just a fancy predicate that also knows how to
+describe itself? Many existing algorithms take predicates as arguments (e.g.
+those defined in STL's `<algorithm>` header), and it would be a shame if gMock
+matchers were not allowed to participate.
+
+Luckily, you can use a matcher where a unary predicate functor is expected by
+wrapping it inside the `Matches()` function. For example,
+
+```cpp
+#include <algorithm>
+#include <vector>
+
+using ::testing::Matches;
+using ::testing::Ge;
+
+vector<int> v;
+...
+// How many elements in v are >= 10?
+const int count = count_if(v.begin(), v.end(), Matches(Ge(10)));
+```
+
+Since you can build complex matchers from simpler ones easily using gMock, this
+gives you a way to conveniently construct composite predicates (doing the same
+using STL's `<functional>` header is just painful). For example, here's a
+predicate that's satisfied by any number that is >= 0, <= 100, and != 50:
+
+```cpp
+using testing::AllOf;
+using testing::Ge;
+using testing::Le;
+using testing::Matches;
+using testing::Ne;
+...
+Matches(AllOf(Ge(0), Le(100), Ne(50)))
+```
+
+### Using Matchers in googletest Assertions
+
+Since matchers are basically predicates that also know how to describe
+themselves, there is a way to take advantage of them in googletest assertions.
+It's called `ASSERT_THAT` and `EXPECT_THAT`:
+
+```cpp
+  ASSERT_THAT(value, matcher);  // Asserts that value matches matcher.
+  EXPECT_THAT(value, matcher);  // The non-fatal version.
+```
+
+For example, in a googletest test you can write:
+
+```cpp
+#include "gmock/gmock.h"
+
+using ::testing::AllOf;
+using ::testing::Ge;
+using ::testing::Le;
+using ::testing::MatchesRegex;
+using ::testing::StartsWith;
+
+...
+  EXPECT_THAT(Foo(), StartsWith("Hello"));
+  EXPECT_THAT(Bar(), MatchesRegex("Line \\d+"));
+  ASSERT_THAT(Baz(), AllOf(Ge(5), Le(10)));
+```
+
+which (as you can probably guess) executes `Foo()`, `Bar()`, and `Baz()`, and
+verifies that:
+
+*   `Foo()` returns a string that starts with `"Hello"`.
+*   `Bar()` returns a string that matches regular expression `"Line \\d+"`.
+*   `Baz()` returns a number in the range [5, 10].
+
+The nice thing about these macros is that *they read like English*. They
+generate informative messages too. For example, if the first `EXPECT_THAT()`
+above fails, the message will be something like:
+
+```cpp
+Value of: Foo()
+  Actual: "Hi, world!"
+Expected: starts with "Hello"
+```
+
+**Credit:** The idea of `(ASSERT|EXPECT)_THAT` was borrowed from Joe Walnes'
+Hamcrest project, which adds `assertThat()` to JUnit.
+
+### Using Predicates as Matchers
+
+gMock provides a [built-in set](#MatcherList) of matchers. In case you find them
+lacking, you can use an arbitrary unary predicate function or functor as a
+matcher - as long as the predicate accepts a value of the type you want. You do
+this by wrapping the predicate inside the `Truly()` function, for example:
+
+```cpp
+using ::testing::Truly;
+
+int IsEven(int n) { return (n % 2) == 0 ? 1 : 0; }
+...
+  // Bar() must be called with an even number.
+  EXPECT_CALL(foo, Bar(Truly(IsEven)));
+```
+
+Note that the predicate function / functor doesn't have to return `bool`. It
+works as long as the return value can be used as the condition in in statement
+`if (condition) ...`.
+
+<!-- GOOGLETEST_CM0023 DO NOT DELETE -->
+
+### Matching Arguments that Are Not Copyable
+
+When you do an `EXPECT_CALL(mock_obj, Foo(bar))`, gMock saves away a copy of
+`bar`. When `Foo()` is called later, gMock compares the argument to `Foo()` with
+the saved copy of `bar`. This way, you don't need to worry about `bar` being
+modified or destroyed after the `EXPECT_CALL()` is executed. The same is true
+when you use matchers like `Eq(bar)`, `Le(bar)`, and so on.
+
+But what if `bar` cannot be copied (i.e. has no copy constructor)? You could
+define your own matcher function or callback and use it with `Truly()`, as the
+previous couple of recipes have shown. Or, you may be able to get away from it
+if you can guarantee that `bar` won't be changed after the `EXPECT_CALL()` is
+executed. Just tell gMock that it should save a reference to `bar`, instead of a
+copy of it. Here's how:
+
+```cpp
+using ::testing::ByRef;
+using ::testing::Eq;
+using ::testing::Lt;
+...
+  // Expects that Foo()'s argument == bar.
+  EXPECT_CALL(mock_obj, Foo(Eq(ByRef(bar))));
+
+  // Expects that Foo()'s argument < bar.
+  EXPECT_CALL(mock_obj, Foo(Lt(ByRef(bar))));
+```
+
+Remember: if you do this, don't change `bar` after the `EXPECT_CALL()`, or the
+result is undefined.
+
+### Validating a Member of an Object
+
+Often a mock function takes a reference to object as an argument. When matching
+the argument, you may not want to compare the entire object against a fixed
+object, as that may be over-specification. Instead, you may need to validate a
+certain member variable or the result of a certain getter method of the object.
+You can do this with `Field()` and `Property()`. More specifically,
+
+```cpp
+Field(&Foo::bar, m)
+```
+
+is a matcher that matches a `Foo` object whose `bar` member variable satisfies
+matcher `m`.
+
+```cpp
+Property(&Foo::baz, m)
+```
+
+is a matcher that matches a `Foo` object whose `baz()` method returns a value
+that satisfies matcher `m`.
+
+For example:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+| Expression                   | Description                              |
+| :--------------------------- | :--------------------------------------- |
+| `Field(&Foo::number, Ge(3))` | Matches `x` where `x.number >= 3`.       |
+| `Property(&Foo::name,  StartsWith("John "))` | Matches `x` where `x.name()` starts with  `"John "`. |
+<!-- mdformat on -->
+
+Note that in `Property(&Foo::baz, ...)`, method `baz()` must take no argument
+and be declared as `const`.
+
+BTW, `Field()` and `Property()` can also match plain pointers to objects. For
+instance,
+
+```cpp
+using ::testing::Field;
+using ::testing::Ge;
+...
+Field(&Foo::number, Ge(3))
+```
+
+matches a plain pointer `p` where `p->number >= 3`. If `p` is `NULL`, the match
+will always fail regardless of the inner matcher.
+
+What if you want to validate more than one members at the same time? Remember
+that there are [`AllOf()` and `AllOfArray()`](#CombiningMatchers).
+
+Finally `Field()` and `Property()` provide overloads that take the field or
+property names as the first argument to include it in the error message. This
+can be useful when creating combined matchers.
+
+```cpp
+using ::testing::AllOf;
+using ::testing::Field;
+using ::testing::Matcher;
+using ::testing::SafeMatcherCast;
+
+Matcher<Foo> IsFoo(const Foo& foo) {
+  return AllOf(Field("some_field", &Foo::some_field, foo.some_field),
+               Field("other_field", &Foo::other_field, foo.other_field),
+               Field("last_field", &Foo::last_field, foo.last_field));
+}
+```
+
+### Validating the Value Pointed to by a Pointer Argument
+
+C++ functions often take pointers as arguments. You can use matchers like
+`IsNull()`, `NotNull()`, and other comparison matchers to match a pointer, but
+what if you want to make sure the value *pointed to* by the pointer, instead of
+the pointer itself, has a certain property? Well, you can use the `Pointee(m)`
+matcher.
+
+`Pointee(m)` matches a pointer if and only if `m` matches the value the pointer
+points to. For example:
+
+```cpp
+using ::testing::Ge;
+using ::testing::Pointee;
+...
+  EXPECT_CALL(foo, Bar(Pointee(Ge(3))));
+```
+
+expects `foo.Bar()` to be called with a pointer that points to a value greater
+than or equal to 3.
+
+One nice thing about `Pointee()` is that it treats a `NULL` pointer as a match
+failure, so you can write `Pointee(m)` instead of
+
+```cpp
+using ::testing::AllOf;
+using ::testing::NotNull;
+using ::testing::Pointee;
+...
+  AllOf(NotNull(), Pointee(m))
+```
+
+without worrying that a `NULL` pointer will crash your test.
+
+Also, did we tell you that `Pointee()` works with both raw pointers **and**
+smart pointers (`std::unique_ptr`, `std::shared_ptr`, etc)?
+
+What if you have a pointer to pointer? You guessed it - you can use nested
+`Pointee()` to probe deeper inside the value. For example,
+`Pointee(Pointee(Lt(3)))` matches a pointer that points to a pointer that points
+to a number less than 3 (what a mouthful...).
+
+### Testing a Certain Property of an Object
+
+Sometimes you want to specify that an object argument has a certain property,
+but there is no existing matcher that does this. If you want good error
+messages, you should [define a matcher](#NewMatchers). If you want to do it
+quick and dirty, you could get away with writing an ordinary function.
+
+Let's say you have a mock function that takes an object of type `Foo`, which has
+an `int bar()` method and an `int baz()` method, and you want to constrain that
+the argument's `bar()` value plus its `baz()` value is a given number. Here's
+how you can define a matcher to do it:
+
+```cpp
+using ::testing::Matcher;
+using ::testing::MatcherInterface;
+using ::testing::MatchResultListener;
+
+class BarPlusBazEqMatcher : public MatcherInterface<const Foo&> {
+ public:
+  explicit BarPlusBazEqMatcher(int expected_sum)
+      : expected_sum_(expected_sum) {}
+
+  bool MatchAndExplain(const Foo& foo,
+                       MatchResultListener* /* listener */) const override {
+    return (foo.bar() + foo.baz()) == expected_sum_;
+  }
+
+  void DescribeTo(::std::ostream* os) const override {
+    *os << "bar() + baz() equals " << expected_sum_;
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const override {
+    *os << "bar() + baz() does not equal " << expected_sum_;
+  }
+ private:
+  const int expected_sum_;
+};
+
+Matcher<const Foo&> BarPlusBazEq(int expected_sum) {
+  return MakeMatcher(new BarPlusBazEqMatcher(expected_sum));
+}
+
+...
+  EXPECT_CALL(..., DoThis(BarPlusBazEq(5)))...;
+```
+
+### Matching Containers
+
+Sometimes an STL container (e.g. list, vector, map, ...) is passed to a mock
+function and you may want to validate it. Since most STL containers support the
+`==` operator, you can write `Eq(expected_container)` or simply
+`expected_container` to match a container exactly.
+
+Sometimes, though, you may want to be more flexible (for example, the first
+element must be an exact match, but the second element can be any positive
+number, and so on). Also, containers used in tests often have a small number of
+elements, and having to define the expected container out-of-line is a bit of a
+hassle.
+
+You can use the `ElementsAre()` or `UnorderedElementsAre()` matcher in such
+cases:
+
+```cpp
+using ::testing::_;
+using ::testing::ElementsAre;
+using ::testing::Gt;
+...
+  MOCK_METHOD(void, Foo, (const vector<int>& numbers), (override));
+...
+  EXPECT_CALL(mock, Foo(ElementsAre(1, Gt(0), _, 5)));
+```
+
+The above matcher says that the container must have 4 elements, which must be 1,
+greater than 0, anything, and 5 respectively.
+
+If you instead write:
+
+```cpp
+using ::testing::_;
+using ::testing::Gt;
+using ::testing::UnorderedElementsAre;
+...
+  MOCK_METHOD(void, Foo, (const vector<int>& numbers), (override));
+...
+  EXPECT_CALL(mock, Foo(UnorderedElementsAre(1, Gt(0), _, 5)));
+```
+
+It means that the container must have 4 elements, which (under some permutation)
+must be 1, greater than 0, anything, and 5 respectively.
+
+As an alternative you can place the arguments in a C-style array and use
+`ElementsAreArray()` or `UnorderedElementsAreArray()` instead:
+
+```cpp
+using ::testing::ElementsAreArray;
+...
+  // ElementsAreArray accepts an array of element values.
+  const int expected_vector1[] = {1, 5, 2, 4, ...};
+  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector1)));
+
+  // Or, an array of element matchers.
+  Matcher<int> expected_vector2[] = {1, Gt(2), _, 3, ...};
+  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector2)));
+```
+
+In case the array needs to be dynamically created (and therefore the array size
+cannot be inferred by the compiler), you can give `ElementsAreArray()` an
+additional argument to specify the array size:
+
+```cpp
+using ::testing::ElementsAreArray;
+...
+  int* const expected_vector3 = new int[count];
+  ... fill expected_vector3 with values ...
+  EXPECT_CALL(mock, Foo(ElementsAreArray(expected_vector3, count)));
+```
+
+Use `Pair` when comparing maps or other associative containers.
+
+```cpp
+using testing::ElementsAre;
+using testing::Pair;
+...
+  std::map<string, int> m = {{"a", 1}, {"b", 2}, {"c", 3}};
+  EXPECT_THAT(m, ElementsAre(Pair("a", 1), Pair("b", 2), Pair("c", 3)));
+```
+
+**Tips:**
+
+*   `ElementsAre*()` can be used to match *any* container that implements the
+    STL iterator pattern (i.e. it has a `const_iterator` type and supports
+    `begin()/end()`), not just the ones defined in STL. It will even work with
+    container types yet to be written - as long as they follows the above
+    pattern.
+*   You can use nested `ElementsAre*()` to match nested (multi-dimensional)
+    containers.
+*   If the container is passed by pointer instead of by reference, just write
+    `Pointee(ElementsAre*(...))`.
+*   The order of elements *matters* for `ElementsAre*()`. If you are using it
+    with containers whose element order are undefined (e.g. `hash_map`) you
+    should use `WhenSorted` around `ElementsAre`.
+
+### Sharing Matchers
+
+Under the hood, a gMock matcher object consists of a pointer to a ref-counted
+implementation object. Copying matchers is allowed and very efficient, as only
+the pointer is copied. When the last matcher that references the implementation
+object dies, the implementation object will be deleted.
+
+Therefore, if you have some complex matcher that you want to use again and
+again, there is no need to build it everytime. Just assign it to a matcher
+variable and use that variable repeatedly! For example,
+
+```cpp
+using ::testing::AllOf;
+using ::testing::Gt;
+using ::testing::Le;
+using ::testing::Matcher;
+...
+  Matcher<int> in_range = AllOf(Gt(5), Le(10));
+  ... use in_range as a matcher in multiple EXPECT_CALLs ...
+```
+
+### Matchers must have no side-effects {#PureMatchers}
+
+WARNING: gMock does not guarantee when or how many times a matcher will be
+invoked. Therefore, all matchers must be *purely functional*: they cannot have
+any side effects, and the match result must not depend on anything other than
+the matcher's parameters and the value being matched.
+
+This requirement must be satisfied no matter how a matcher is defined (e.g., if
+it is one of the standard matchers, or a custom matcher). In particular, a
+matcher can never call a mock function, as that will affect the state of the
+mock object and gMock.
+
+## Setting Expectations
+
+### Knowing When to Expect {#UseOnCall}
+
+<!-- GOOGLETEST_CM0018 DO NOT DELETE -->
+
+**`ON_CALL`** is likely the *single most under-utilized construct* in gMock.
+
+There are basically two constructs for defining the behavior of a mock object:
+`ON_CALL` and `EXPECT_CALL`. The difference? `ON_CALL` defines what happens when
+a mock method is called, but <em>doesn't imply any expectation on the method
+being called</em>. `EXPECT_CALL` not only defines the behavior, but also sets an
+expectation that <em>the method will be called with the given arguments, for the
+given number of times</em> (and *in the given order* when you specify the order
+too).
+
+Since `EXPECT_CALL` does more, isn't it better than `ON_CALL`? Not really. Every
+`EXPECT_CALL` adds a constraint on the behavior of the code under test. Having
+more constraints than necessary is *baaad* - even worse than not having enough
+constraints.
+
+This may be counter-intuitive. How could tests that verify more be worse than
+tests that verify less? Isn't verification the whole point of tests?
+
+The answer lies in *what* a test should verify. **A good test verifies the
+contract of the code.** If a test over-specifies, it doesn't leave enough
+freedom to the implementation. As a result, changing the implementation without
+breaking the contract (e.g. refactoring and optimization), which should be
+perfectly fine to do, can break such tests. Then you have to spend time fixing
+them, only to see them broken again the next time the implementation is changed.
+
+Keep in mind that one doesn't have to verify more than one property in one test.
+In fact, **it's a good style to verify only one thing in one test.** If you do
+that, a bug will likely break only one or two tests instead of dozens (which
+case would you rather debug?). If you are also in the habit of giving tests
+descriptive names that tell what they verify, you can often easily guess what's
+wrong just from the test log itself.
+
+So use `ON_CALL` by default, and only use `EXPECT_CALL` when you actually intend
+to verify that the call is made. For example, you may have a bunch of `ON_CALL`s
+in your test fixture to set the common mock behavior shared by all tests in the
+same group, and write (scarcely) different `EXPECT_CALL`s in different `TEST_F`s
+to verify different aspects of the code's behavior. Compared with the style
+where each `TEST` has many `EXPECT_CALL`s, this leads to tests that are more
+resilient to implementational changes (and thus less likely to require
+maintenance) and makes the intent of the tests more obvious (so they are easier
+to maintain when you do need to maintain them).
+
+If you are bothered by the "Uninteresting mock function call" message printed
+when a mock method without an `EXPECT_CALL` is called, you may use a `NiceMock`
+instead to suppress all such messages for the mock object, or suppress the
+message for specific methods by adding `EXPECT_CALL(...).Times(AnyNumber())`. DO
+NOT suppress it by blindly adding an `EXPECT_CALL(...)`, or you'll have a test
+that's a pain to maintain.
+
+### Ignoring Uninteresting Calls
+
+If you are not interested in how a mock method is called, just don't say
+anything about it. In this case, if the method is ever called, gMock will
+perform its default action to allow the test program to continue. If you are not
+happy with the default action taken by gMock, you can override it using
+`DefaultValue<T>::Set()` (described [here](#DefaultValue)) or `ON_CALL()`.
+
+Please note that once you expressed interest in a particular mock method (via
+`EXPECT_CALL()`), all invocations to it must match some expectation. If this
+function is called but the arguments don't match any `EXPECT_CALL()` statement,
+it will be an error.
+
+### Disallowing Unexpected Calls
+
+If a mock method shouldn't be called at all, explicitly say so:
+
+```cpp
+using ::testing::_;
+...
+  EXPECT_CALL(foo, Bar(_))
+      .Times(0);
+```
+
+If some calls to the method are allowed, but the rest are not, just list all the
+expected calls:
+
+```cpp
+using ::testing::AnyNumber;
+using ::testing::Gt;
+...
+  EXPECT_CALL(foo, Bar(5));
+  EXPECT_CALL(foo, Bar(Gt(10)))
+      .Times(AnyNumber());
+```
+
+A call to `foo.Bar()` that doesn't match any of the `EXPECT_CALL()` statements
+will be an error.
+
+### Understanding Uninteresting vs Unexpected Calls {#uninteresting-vs-unexpected}
+
+*Uninteresting* calls and *unexpected* calls are different concepts in gMock.
+*Very* different.
+
+A call `x.Y(...)` is **uninteresting** if there's *not even a single*
+`EXPECT_CALL(x, Y(...))` set. In other words, the test isn't interested in the
+`x.Y()` method at all, as evident in that the test doesn't care to say anything
+about it.
+
+A call `x.Y(...)` is **unexpected** if there are *some* `EXPECT_CALL(x,
+Y(...))`s set, but none of them matches the call. Put another way, the test is
+interested in the `x.Y()` method (therefore it explicitly sets some
+`EXPECT_CALL` to verify how it's called); however, the verification fails as the
+test doesn't expect this particular call to happen.
+
+**An unexpected call is always an error,** as the code under test doesn't behave
+the way the test expects it to behave.
+
+**By default, an uninteresting call is not an error,** as it violates no
+constraint specified by the test. (gMock's philosophy is that saying nothing
+means there is no constraint.) However, it leads to a warning, as it *might*
+indicate a problem (e.g. the test author might have forgotten to specify a
+constraint).
+
+In gMock, `NiceMock` and `StrictMock` can be used to make a mock class "nice" or
+"strict". How does this affect uninteresting calls and unexpected calls?
+
+A **nice mock** suppresses uninteresting call *warnings*. It is less chatty than
+the default mock, but otherwise is the same. If a test fails with a default
+mock, it will also fail using a nice mock instead. And vice versa. Don't expect
+making a mock nice to change the test's result.
+
+A **strict mock** turns uninteresting call warnings into errors. So making a
+mock strict may change the test's result.
+
+Let's look at an example:
+
+```cpp
+TEST(...) {
+  NiceMock<MockDomainRegistry> mock_registry;
+  EXPECT_CALL(mock_registry, GetDomainOwner("google.com"))
+          .WillRepeatedly(Return("Larry Page"));
+
+  // Use mock_registry in code under test.
+  ... &mock_registry ...
+}
+```
+
+The sole `EXPECT_CALL` here says that all calls to `GetDomainOwner()` must have
+`"google.com"` as the argument. If `GetDomainOwner("yahoo.com")` is called, it
+will be an unexpected call, and thus an error. *Having a nice mock doesn't
+change the severity of an unexpected call.*
+
+So how do we tell gMock that `GetDomainOwner()` can be called with some other
+arguments as well? The standard technique is to add a "catch all" `EXPECT_CALL`:
+
+```cpp
+  EXPECT_CALL(mock_registry, GetDomainOwner(_))
+        .Times(AnyNumber());  // catches all other calls to this method.
+  EXPECT_CALL(mock_registry, GetDomainOwner("google.com"))
+        .WillRepeatedly(Return("Larry Page"));
+```
+
+Remember that `_` is the wildcard matcher that matches anything. With this, if
+`GetDomainOwner("google.com")` is called, it will do what the second
+`EXPECT_CALL` says; if it is called with a different argument, it will do what
+the first `EXPECT_CALL` says.
+
+Note that the order of the two `EXPECT_CALL`s is important, as a newer
+`EXPECT_CALL` takes precedence over an older one.
+
+For more on uninteresting calls, nice mocks, and strict mocks, read
+["The Nice, the Strict, and the Naggy"](#NiceStrictNaggy).
+
+### Ignoring Uninteresting Arguments {#ParameterlessExpectations}
+
+If your test doesn't care about the parameters (it only cares about the number
+or order of calls), you can often simply omit the parameter list:
+
+```cpp
+  // Expect foo.Bar( ... ) twice with any arguments.
+  EXPECT_CALL(foo, Bar).Times(2);
+
+  // Delegate to the given method whenever the factory is invoked.
+  ON_CALL(foo_factory, MakeFoo)
+      .WillByDefault(&BuildFooForTest);
+```
+
+This functionality is only available when a method is not overloaded; to prevent
+unexpected behavior it is a compilation error to try to set an expectation on a
+method where the specific overload is ambiguous. You can work around this by
+supplying a [simpler mock interface](#SimplerInterfaces) than the mocked class
+provides.
+
+This pattern is also useful when the arguments are interesting, but match logic
+is substantially complex. You can leave the argument list unspecified and use
+SaveArg actions to [save the values for later verification](#SaveArgVerify). If
+you do that, you can easily differentiate calling the method the wrong number of
+times from calling it with the wrong arguments.
+
+### Expecting Ordered Calls {#OrderedCalls}
+
+Although an `EXPECT_CALL()` statement defined earlier takes precedence when
+gMock tries to match a function call with an expectation, by default calls don't
+have to happen in the order `EXPECT_CALL()` statements are written. For example,
+if the arguments match the matchers in the third `EXPECT_CALL()`, but not those
+in the first two, then the third expectation will be used.
+
+If you would rather have all calls occur in the order of the expectations, put
+the `EXPECT_CALL()` statements in a block where you define a variable of type
+`InSequence`:
+
+```cpp
+using ::testing::_;
+using ::testing::InSequence;
+
+  {
+    InSequence s;
+
+    EXPECT_CALL(foo, DoThis(5));
+    EXPECT_CALL(bar, DoThat(_))
+        .Times(2);
+    EXPECT_CALL(foo, DoThis(6));
+  }
+```
+
+In this example, we expect a call to `foo.DoThis(5)`, followed by two calls to
+`bar.DoThat()` where the argument can be anything, which are in turn followed by
+a call to `foo.DoThis(6)`. If a call occurred out-of-order, gMock will report an
+error.
+
+### Expecting Partially Ordered Calls {#PartialOrder}
+
+Sometimes requiring everything to occur in a predetermined order can lead to
+brittle tests. For example, we may care about `A` occurring before both `B` and
+`C`, but aren't interested in the relative order of `B` and `C`. In this case,
+the test should reflect our real intent, instead of being overly constraining.
+
+gMock allows you to impose an arbitrary DAG (directed acyclic graph) on the
+calls. One way to express the DAG is to use the [After](#AfterClause) clause of
+`EXPECT_CALL`.
+
+Another way is via the `InSequence()` clause (not the same as the `InSequence`
+class), which we borrowed from jMock 2. It's less flexible than `After()`, but
+more convenient when you have long chains of sequential calls, as it doesn't
+require you to come up with different names for the expectations in the chains.
+Here's how it works:
+
+If we view `EXPECT_CALL()` statements as nodes in a graph, and add an edge from
+node A to node B wherever A must occur before B, we can get a DAG. We use the
+term "sequence" to mean a directed path in this DAG. Now, if we decompose the
+DAG into sequences, we just need to know which sequences each `EXPECT_CALL()`
+belongs to in order to be able to reconstruct the original DAG.
+
+So, to specify the partial order on the expectations we need to do two things:
+first to define some `Sequence` objects, and then for each `EXPECT_CALL()` say
+which `Sequence` objects it is part of.
+
+Expectations in the same sequence must occur in the order they are written. For
+example,
+
+```cpp
+using ::testing::Sequence;
+...
+  Sequence s1, s2;
+
+  EXPECT_CALL(foo, A())
+      .InSequence(s1, s2);
+  EXPECT_CALL(bar, B())
+      .InSequence(s1);
+  EXPECT_CALL(bar, C())
+      .InSequence(s2);
+  EXPECT_CALL(foo, D())
+      .InSequence(s2);
+```
+
+specifies the following DAG (where `s1` is `A -> B`, and `s2` is `A -> C -> D`):
+
+```text
+       +---> B
+       |
+  A ---|
+       |
+        +---> C ---> D
+```
+
+This means that A must occur before B and C, and C must occur before D. There's
+no restriction about the order other than these.
+
+### Controlling When an Expectation Retires
+
+When a mock method is called, gMock only considers expectations that are still
+active. An expectation is active when created, and becomes inactive (aka
+*retires*) when a call that has to occur later has occurred. For example, in
+
+```cpp
+using ::testing::_;
+using ::testing::Sequence;
+...
+  Sequence s1, s2;
+
+  EXPECT_CALL(log, Log(WARNING, _, "File too large."))      // #1
+      .Times(AnyNumber())
+      .InSequence(s1, s2);
+  EXPECT_CALL(log, Log(WARNING, _, "Data set is empty."))   // #2
+      .InSequence(s1);
+  EXPECT_CALL(log, Log(WARNING, _, "User not found."))      // #3
+      .InSequence(s2);
+```
+
+as soon as either #2 or #3 is matched, #1 will retire. If a warning `"File too
+large."` is logged after this, it will be an error.
+
+Note that an expectation doesn't retire automatically when it's saturated. For
+example,
+
+```cpp
+using ::testing::_;
+...
+  EXPECT_CALL(log, Log(WARNING, _, _));                     // #1
+  EXPECT_CALL(log, Log(WARNING, _, "File too large."));     // #2
+```
+
+says that there will be exactly one warning with the message `"File too
+large."`. If the second warning contains this message too, #2 will match again
+and result in an upper-bound-violated error.
+
+If this is not what you want, you can ask an expectation to retire as soon as it
+becomes saturated:
+
+```cpp
+using ::testing::_;
+...
+  EXPECT_CALL(log, Log(WARNING, _, _));                     // #1
+  EXPECT_CALL(log, Log(WARNING, _, "File too large."))      // #2
+      .RetiresOnSaturation();
+```
+
+Here #2 can be used only once, so if you have two warnings with the message
+`"File too large."`, the first will match #2 and the second will match #1 -
+there will be no error.
+
+## Using Actions
+
+### Returning References from Mock Methods
+
+If a mock function's return type is a reference, you need to use `ReturnRef()`
+instead of `Return()` to return a result:
+
+```cpp
+using ::testing::ReturnRef;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(Bar&, GetBar, (), (override));
+};
+...
+  MockFoo foo;
+  Bar bar;
+  EXPECT_CALL(foo, GetBar())
+      .WillOnce(ReturnRef(bar));
+...
+```
+
+### Returning Live Values from Mock Methods
+
+The `Return(x)` action saves a copy of `x` when the action is created, and
+always returns the same value whenever it's executed. Sometimes you may want to
+instead return the *live* value of `x` (i.e. its value at the time when the
+action is *executed*.). Use either `ReturnRef()` or `ReturnPointee()` for this
+purpose.
+
+If the mock function's return type is a reference, you can do it using
+`ReturnRef(x)`, as shown in the previous recipe ("Returning References from Mock
+Methods"). However, gMock doesn't let you use `ReturnRef()` in a mock function
+whose return type is not a reference, as doing that usually indicates a user
+error. So, what shall you do?
+
+Though you may be tempted, DO NOT use `ByRef()`:
+
+```cpp
+using testing::ByRef;
+using testing::Return;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(int, GetValue, (), (override));
+};
+...
+  int x = 0;
+  MockFoo foo;
+  EXPECT_CALL(foo, GetValue())
+      .WillRepeatedly(Return(ByRef(x)));  // Wrong!
+  x = 42;
+  EXPECT_EQ(42, foo.GetValue());
+```
+
+Unfortunately, it doesn't work here. The above code will fail with error:
+
+```text
+Value of: foo.GetValue()
+  Actual: 0
+Expected: 42
+```
+
+The reason is that `Return(*value*)` converts `value` to the actual return type
+of the mock function at the time when the action is *created*, not when it is
+*executed*. (This behavior was chosen for the action to be safe when `value` is
+a proxy object that references some temporary objects.) As a result, `ByRef(x)`
+is converted to an `int` value (instead of a `const int&`) when the expectation
+is set, and `Return(ByRef(x))` will always return 0.
+
+`ReturnPointee(pointer)` was provided to solve this problem specifically. It
+returns the value pointed to by `pointer` at the time the action is *executed*:
+
+```cpp
+using testing::ReturnPointee;
+...
+  int x = 0;
+  MockFoo foo;
+  EXPECT_CALL(foo, GetValue())
+      .WillRepeatedly(ReturnPointee(&x));  // Note the & here.
+  x = 42;
+  EXPECT_EQ(42, foo.GetValue());  // This will succeed now.
+```
+
+### Combining Actions
+
+Want to do more than one thing when a function is called? That's fine. `DoAll()`
+allow you to do sequence of actions every time. Only the return value of the
+last action in the sequence will be used.
+
+```cpp
+using ::testing::_;
+using ::testing::DoAll;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(bool, Bar, (int n), (override));
+};
+...
+  EXPECT_CALL(foo, Bar(_))
+      .WillOnce(DoAll(action_1,
+                      action_2,
+                      ...
+                      action_n));
+```
+
+### Verifying Complex Arguments {#SaveArgVerify}
+
+If you want to verify that a method is called with a particular argument but the
+match criteria is complex, it can be difficult to distinguish between
+cardinality failures (calling the method the wrong number of times) and argument
+match failures. Similarly, if you are matching multiple parameters, it may not
+be easy to distinguishing which argument failed to match. For example:
+
+```cpp
+  // Not ideal: this could fail because of a problem with arg1 or arg2, or maybe
+  // just the method wasn't called.
+  EXPECT_CALL(foo, SendValues(_, ElementsAre(1, 4, 4, 7), EqualsProto( ... )));
+```
+
+You can instead save the arguments and test them individually:
+
+```cpp
+  EXPECT_CALL(foo, SendValues)
+      .WillOnce(DoAll(SaveArg<1>(&actual_array), SaveArg<2>(&actual_proto)));
+  ... run the test
+  EXPECT_THAT(actual_array, ElementsAre(1, 4, 4, 7));
+  EXPECT_THAT(actual_proto, EqualsProto( ... ));
+```
+
+### Mocking Side Effects {#MockingSideEffects}
+
+Sometimes a method exhibits its effect not via returning a value but via side
+effects. For example, it may change some global state or modify an output
+argument. To mock side effects, in general you can define your own action by
+implementing `::testing::ActionInterface`.
+
+If all you need to do is to change an output argument, the built-in
+`SetArgPointee()` action is convenient:
+
+```cpp
+using ::testing::_;
+using ::testing::SetArgPointee;
+
+class MockMutator : public Mutator {
+ public:
+  MOCK_METHOD(void, Mutate, (bool mutate, int* value), (override));
+  ...
+}
+...
+  MockMutator mutator;
+  EXPECT_CALL(mutator, Mutate(true, _))
+      .WillOnce(SetArgPointee<1>(5));
+```
+
+In this example, when `mutator.Mutate()` is called, we will assign 5 to the
+`int` variable pointed to by argument #1 (0-based).
+
+`SetArgPointee()` conveniently makes an internal copy of the value you pass to
+it, removing the need to keep the value in scope and alive. The implication
+however is that the value must have a copy constructor and assignment operator.
+
+If the mock method also needs to return a value as well, you can chain
+`SetArgPointee()` with `Return()` using `DoAll()`, remembering to put the
+`Return()` statement last:
+
+```cpp
+using ::testing::_;
+using ::testing::Return;
+using ::testing::SetArgPointee;
+
+class MockMutator : public Mutator {
+ public:
+  ...
+  MOCK_METHOD(bool, MutateInt, (int* value), (override));
+}
+...
+  MockMutator mutator;
+  EXPECT_CALL(mutator, MutateInt(_))
+      .WillOnce(DoAll(SetArgPointee<0>(5),
+                      Return(true)));
+```
+
+Note, however, that if you use the `ReturnOKWith()` method, it will override the
+values provided by `SetArgPointee()` in the response parameters of your function
+call.
+
+If the output argument is an array, use the `SetArrayArgument<N>(first, last)`
+action instead. It copies the elements in source range `[first, last)` to the
+array pointed to by the `N`-th (0-based) argument:
+
+```cpp
+using ::testing::NotNull;
+using ::testing::SetArrayArgument;
+
+class MockArrayMutator : public ArrayMutator {
+ public:
+  MOCK_METHOD(void, Mutate, (int* values, int num_values), (override));
+  ...
+}
+...
+  MockArrayMutator mutator;
+  int values[5] = {1, 2, 3, 4, 5};
+  EXPECT_CALL(mutator, Mutate(NotNull(), 5))
+      .WillOnce(SetArrayArgument<0>(values, values + 5));
+```
+
+This also works when the argument is an output iterator:
+
+```cpp
+using ::testing::_;
+using ::testing::SetArrayArgument;
+
+class MockRolodex : public Rolodex {
+ public:
+  MOCK_METHOD(void, GetNames, (std::back_insert_iterator<vector<string>>),
+              (override));
+  ...
+}
+...
+  MockRolodex rolodex;
+  vector<string> names;
+  names.push_back("George");
+  names.push_back("John");
+  names.push_back("Thomas");
+  EXPECT_CALL(rolodex, GetNames(_))
+      .WillOnce(SetArrayArgument<0>(names.begin(), names.end()));
+```
+
+### Changing a Mock Object's Behavior Based on the State
+
+If you expect a call to change the behavior of a mock object, you can use
+`::testing::InSequence` to specify different behaviors before and after the
+call:
+
+```cpp
+using ::testing::InSequence;
+using ::testing::Return;
+
+...
+  {
+     InSequence seq;
+     EXPECT_CALL(my_mock, IsDirty())
+         .WillRepeatedly(Return(true));
+     EXPECT_CALL(my_mock, Flush());
+     EXPECT_CALL(my_mock, IsDirty())
+         .WillRepeatedly(Return(false));
+  }
+  my_mock.FlushIfDirty();
+```
+
+This makes `my_mock.IsDirty()` return `true` before `my_mock.Flush()` is called
+and return `false` afterwards.
+
+If the behavior change is more complex, you can store the effects in a variable
+and make a mock method get its return value from that variable:
+
+```cpp
+using ::testing::_;
+using ::testing::SaveArg;
+using ::testing::Return;
+
+ACTION_P(ReturnPointee, p) { return *p; }
+...
+  int previous_value = 0;
+  EXPECT_CALL(my_mock, GetPrevValue)
+      .WillRepeatedly(ReturnPointee(&previous_value));
+  EXPECT_CALL(my_mock, UpdateValue)
+      .WillRepeatedly(SaveArg<0>(&previous_value));
+  my_mock.DoSomethingToUpdateValue();
+```
+
+Here `my_mock.GetPrevValue()` will always return the argument of the last
+`UpdateValue()` call.
+
+### Setting the Default Value for a Return Type {#DefaultValue}
+
+If a mock method's return type is a built-in C++ type or pointer, by default it
+will return 0 when invoked. Also, in C++ 11 and above, a mock method whose
+return type has a default constructor will return a default-constructed value by
+default. You only need to specify an action if this default value doesn't work
+for you.
+
+Sometimes, you may want to change this default value, or you may want to specify
+a default value for types gMock doesn't know about. You can do this using the
+`::testing::DefaultValue` class template:
+
+```cpp
+using ::testing::DefaultValue;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(Bar, CalculateBar, (), (override));
+};
+
+
+...
+  Bar default_bar;
+  // Sets the default return value for type Bar.
+  DefaultValue<Bar>::Set(default_bar);
+
+  MockFoo foo;
+
+  // We don't need to specify an action here, as the default
+  // return value works for us.
+  EXPECT_CALL(foo, CalculateBar());
+
+  foo.CalculateBar();  // This should return default_bar.
+
+  // Unsets the default return value.
+  DefaultValue<Bar>::Clear();
+```
+
+Please note that changing the default value for a type can make you tests hard
+to understand. We recommend you to use this feature judiciously. For example,
+you may want to make sure the `Set()` and `Clear()` calls are right next to the
+code that uses your mock.
+
+### Setting the Default Actions for a Mock Method
+
+You've learned how to change the default value of a given type. However, this
+may be too coarse for your purpose: perhaps you have two mock methods with the
+same return type and you want them to have different behaviors. The `ON_CALL()`
+macro allows you to customize your mock's behavior at the method level:
+
+```cpp
+using ::testing::_;
+using ::testing::AnyNumber;
+using ::testing::Gt;
+using ::testing::Return;
+...
+  ON_CALL(foo, Sign(_))
+      .WillByDefault(Return(-1));
+  ON_CALL(foo, Sign(0))
+      .WillByDefault(Return(0));
+  ON_CALL(foo, Sign(Gt(0)))
+      .WillByDefault(Return(1));
+
+  EXPECT_CALL(foo, Sign(_))
+      .Times(AnyNumber());
+
+  foo.Sign(5);   // This should return 1.
+  foo.Sign(-9);  // This should return -1.
+  foo.Sign(0);   // This should return 0.
+```
+
+As you may have guessed, when there are more than one `ON_CALL()` statements,
+the newer ones in the order take precedence over the older ones. In other words,
+the **last** one that matches the function arguments will be used. This matching
+order allows you to set up the common behavior in a mock object's constructor or
+the test fixture's set-up phase and specialize the mock's behavior later.
+
+Note that both `ON_CALL` and `EXPECT_CALL` have the same "later statements take
+precedence" rule, but they don't interact. That is, `EXPECT_CALL`s have their
+own precedence order distinct from the `ON_CALL` precedence order.
+
+### Using Functions/Methods/Functors/Lambdas as Actions {#FunctionsAsActions}
+
+If the built-in actions don't suit you, you can use an existing callable
+(function, `std::function`, method, functor, lambda as an action.
+
+<!-- GOOGLETEST_CM0024 DO NOT DELETE -->
+
+```cpp
+using ::testing::_; using ::testing::Invoke;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(int, Sum, (int x, int y), (override));
+  MOCK_METHOD(bool, ComplexJob, (int x), (override));
+};
+
+int CalculateSum(int x, int y) { return x + y; }
+int Sum3(int x, int y, int z) { return x + y + z; }
+
+class Helper {
+ public:
+  bool ComplexJob(int x);
+};
+
+...
+  MockFoo foo;
+  Helper helper;
+  EXPECT_CALL(foo, Sum(_, _))
+      .WillOnce(&CalculateSum)
+      .WillRepeatedly(Invoke(NewPermanentCallback(Sum3, 1)));
+  EXPECT_CALL(foo, ComplexJob(_))
+      .WillOnce(Invoke(&helper, &Helper::ComplexJob));
+      .WillRepeatedly([](int x) { return x > 0; });
+
+  foo.Sum(5, 6);         // Invokes CalculateSum(5, 6).
+  foo.Sum(2, 3);         // Invokes Sum3(1, 2, 3).
+  foo.ComplexJob(10);    // Invokes helper.ComplexJob(10).
+  foo.ComplexJob(-1);    // Invokes the inline lambda.
+```
+
+The only requirement is that the type of the function, etc must be *compatible*
+with the signature of the mock function, meaning that the latter's arguments can
+be implicitly converted to the corresponding arguments of the former, and the
+former's return type can be implicitly converted to that of the latter. So, you
+can invoke something whose type is *not* exactly the same as the mock function,
+as long as it's safe to do so - nice, huh?
+
+**`Note:`{.escaped}**
+
+*   The action takes ownership of the callback and will delete it when the
+    action itself is destructed.
+*   If the type of a callback is derived from a base callback type `C`, you need
+    to implicitly cast it to `C` to resolve the overloading, e.g.
+
+    ```cpp
+    using ::testing::Invoke;
+    ...
+      ResultCallback<bool>* is_ok = ...;
+      ... Invoke(is_ok) ...;  // This works.
+
+      BlockingClosure* done = new BlockingClosure;
+      ... Invoke(implicit_cast<Closure*>(done)) ...;  // The cast is necessary.
+    ```
+
+### Using Functions with Extra Info as Actions
+
+The function or functor you call using `Invoke()` must have the same number of
+arguments as the mock function you use it for. Sometimes you may have a function
+that takes more arguments, and you are willing to pass in the extra arguments
+yourself to fill the gap. You can do this in gMock using callbacks with
+pre-bound arguments. Here's an example:
+
+```cpp
+using ::testing::Invoke;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(char, DoThis, (int n), (override));
+};
+
+char SignOfSum(int x, int y) {
+  const int sum = x + y;
+  return (sum > 0) ? '+' : (sum < 0) ? '-' : '0';
+}
+
+TEST_F(FooTest, Test) {
+  MockFoo foo;
+
+  EXPECT_CALL(foo, DoThis(2))
+      .WillOnce(Invoke(NewPermanentCallback(SignOfSum, 5)));
+  EXPECT_EQ('+', foo.DoThis(2));  // Invokes SignOfSum(5, 2).
+}
+```
+
+### Invoking a Function/Method/Functor/Lambda/Callback Without Arguments
+
+`Invoke()` is very useful for doing actions that are more complex. It passes the
+mock function's arguments to the function, etc being invoked such that the
+callee has the full context of the call to work with. If the invoked function is
+not interested in some or all of the arguments, it can simply ignore them.
+
+Yet, a common pattern is that a test author wants to invoke a function without
+the arguments of the mock function. `Invoke()` allows her to do that using a
+wrapper function that throws away the arguments before invoking an underlining
+nullary function. Needless to say, this can be tedious and obscures the intent
+of the test.
+
+`InvokeWithoutArgs()` solves this problem. It's like `Invoke()` except that it
+doesn't pass the mock function's arguments to the callee. Here's an example:
+
+```cpp
+using ::testing::_;
+using ::testing::InvokeWithoutArgs;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(bool, ComplexJob, (int n), (override));
+};
+
+bool Job1() { ... }
+bool Job2(int n, char c) { ... }
+
+...
+  MockFoo foo;
+  EXPECT_CALL(foo, ComplexJob(_))
+      .WillOnce(InvokeWithoutArgs(Job1))
+      .WillOnce(InvokeWithoutArgs(NewPermanentCallback(Job2, 5, 'a')));
+
+  foo.ComplexJob(10);  // Invokes Job1().
+  foo.ComplexJob(20);  // Invokes Job2(5, 'a').
+```
+
+**`Note:`{.escaped}**
+
+*   The action takes ownership of the callback and will delete it when the
+    action itself is destructed.
+*   If the type of a callback is derived from a base callback type `C`, you need
+    to implicitly cast it to `C` to resolve the overloading, e.g.
+
+    ```cpp
+    using ::testing::InvokeWithoutArgs;
+    ...
+      ResultCallback<bool>* is_ok = ...;
+      ... InvokeWithoutArgs(is_ok) ...;  // This works.
+
+      BlockingClosure* done = ...;
+      ... InvokeWithoutArgs(implicit_cast<Closure*>(done)) ...;
+      // The cast is necessary.
+    ```
+
+### Invoking an Argument of the Mock Function
+
+Sometimes a mock function will receive a function pointer, a functor (in other
+words, a "callable") as an argument, e.g.
+
+```cpp
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(bool, DoThis, (int n, (ResultCallback1<bool, int>* callback)),
+              (override));
+};
+```
+
+and you may want to invoke this callable argument:
+
+```cpp
+using ::testing::_;
+...
+  MockFoo foo;
+  EXPECT_CALL(foo, DoThis(_, _))
+      .WillOnce(...);
+      // Will execute callback->Run(5), where callback is the
+      // second argument DoThis() receives.
+```
+
+NOTE: The section below is legacy documentation from before C++ had lambdas:
+
+Arghh, you need to refer to a mock function argument but C++ has no lambda
+(yet), so you have to define your own action. :-( Or do you really?
+
+Well, gMock has an action to solve *exactly* this problem:
+
+```cpp
+InvokeArgument<N>(arg_1, arg_2, ..., arg_m)
+```
+
+will invoke the `N`-th (0-based) argument the mock function receives, with
+`arg_1`, `arg_2`, ..., and `arg_m`. No matter if the argument is a function
+pointer, a functor, or a callback. gMock handles them all.
+
+With that, you could write:
+
+```cpp
+using ::testing::_;
+using ::testing::InvokeArgument;
+...
+  EXPECT_CALL(foo, DoThis(_, _))
+      .WillOnce(InvokeArgument<1>(5));
+      // Will execute callback->Run(5), where callback is the
+      // second argument DoThis() receives.
+```
+
+What if the callable takes an argument by reference? No problem - just wrap it
+inside `ByRef()`:
+
+```cpp
+  ...
+  MOCK_METHOD(bool, Bar,
+              ((ResultCallback2<bool, int, const Helper&>* callback)),
+              (override));
+  ...
+  using ::testing::_;
+  using ::testing::ByRef;
+  using ::testing::InvokeArgument;
+  ...
+  MockFoo foo;
+  Helper helper;
+  ...
+  EXPECT_CALL(foo, Bar(_))
+      .WillOnce(InvokeArgument<0>(5, ByRef(helper)));
+      // ByRef(helper) guarantees that a reference to helper, not a copy of it,
+      // will be passed to the callback.
+```
+
+What if the callable takes an argument by reference and we do **not** wrap the
+argument in `ByRef()`? Then `InvokeArgument()` will *make a copy* of the
+argument, and pass a *reference to the copy*, instead of a reference to the
+original value, to the callable. This is especially handy when the argument is a
+temporary value:
+
+```cpp
+  ...
+  MOCK_METHOD(bool, DoThat, (bool (*f)(const double& x, const string& s)),
+              (override));
+  ...
+  using ::testing::_;
+  using ::testing::InvokeArgument;
+  ...
+  MockFoo foo;
+  ...
+  EXPECT_CALL(foo, DoThat(_))
+      .WillOnce(InvokeArgument<0>(5.0, string("Hi")));
+      // Will execute (*f)(5.0, string("Hi")), where f is the function pointer
+      // DoThat() receives.  Note that the values 5.0 and string("Hi") are
+      // temporary and dead once the EXPECT_CALL() statement finishes.  Yet
+      // it's fine to perform this action later, since a copy of the values
+      // are kept inside the InvokeArgument action.
+```
+
+### Ignoring an Action's Result
+
+Sometimes you have an action that returns *something*, but you need an action
+that returns `void` (perhaps you want to use it in a mock function that returns
+`void`, or perhaps it needs to be used in `DoAll()` and it's not the last in the
+list). `IgnoreResult()` lets you do that. For example:
+
+```cpp
+using ::testing::_;
+using ::testing::DoAll;
+using ::testing::IgnoreResult;
+using ::testing::Return;
+
+int Process(const MyData& data);
+string DoSomething();
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(void, Abc, (const MyData& data), (override));
+  MOCK_METHOD(bool, Xyz, (), (override));
+};
+
+  ...
+  MockFoo foo;
+  EXPECT_CALL(foo, Abc(_))
+      // .WillOnce(Invoke(Process));
+      // The above line won't compile as Process() returns int but Abc() needs
+      // to return void.
+      .WillOnce(IgnoreResult(Process));
+  EXPECT_CALL(foo, Xyz())
+      .WillOnce(DoAll(IgnoreResult(DoSomething),
+                      // Ignores the string DoSomething() returns.
+                      Return(true)));
+```
+
+Note that you **cannot** use `IgnoreResult()` on an action that already returns
+`void`. Doing so will lead to ugly compiler errors.
+
+### Selecting an Action's Arguments {#SelectingArgs}
+
+Say you have a mock function `Foo()` that takes seven arguments, and you have a
+custom action that you want to invoke when `Foo()` is called. Trouble is, the
+custom action only wants three arguments:
+
+```cpp
+using ::testing::_;
+using ::testing::Invoke;
+...
+  MOCK_METHOD(bool, Foo,
+              (bool visible, const string& name, int x, int y,
+               (const map<pair<int, int>>), double& weight, double min_weight,
+               double max_wight));
+...
+bool IsVisibleInQuadrant1(bool visible, int x, int y) {
+  return visible && x >= 0 && y >= 0;
+}
+...
+  EXPECT_CALL(mock, Foo)
+      .WillOnce(Invoke(IsVisibleInQuadrant1));  // Uh, won't compile. :-(
+```
+
+To please the compiler God, you need to define an "adaptor" that has the same
+signature as `Foo()` and calls the custom action with the right arguments:
+
+```cpp
+using ::testing::_;
+using ::testing::Invoke;
+...
+bool MyIsVisibleInQuadrant1(bool visible, const string& name, int x, int y,
+                            const map<pair<int, int>, double>& weight,
+                            double min_weight, double max_wight) {
+  return IsVisibleInQuadrant1(visible, x, y);
+}
+...
+  EXPECT_CALL(mock, Foo)
+      .WillOnce(Invoke(MyIsVisibleInQuadrant1));  // Now it works.
+```
+
+But isn't this awkward?
+
+gMock provides a generic *action adaptor*, so you can spend your time minding
+more important business than writing your own adaptors. Here's the syntax:
+
+```cpp
+WithArgs<N1, N2, ..., Nk>(action)
+```
+
+creates an action that passes the arguments of the mock function at the given
+indices (0-based) to the inner `action` and performs it. Using `WithArgs`, our
+original example can be written as:
+
+```cpp
+using ::testing::_;
+using ::testing::Invoke;
+using ::testing::WithArgs;
+...
+  EXPECT_CALL(mock, Foo)
+      .WillOnce(WithArgs<0, 2, 3>(Invoke(IsVisibleInQuadrant1)));  // No need to define your own adaptor.
+```
+
+For better readability, gMock also gives you:
+
+*   `WithoutArgs(action)` when the inner `action` takes *no* argument, and
+*   `WithArg<N>(action)` (no `s` after `Arg`) when the inner `action` takes
+    *one* argument.
+
+As you may have realized, `InvokeWithoutArgs(...)` is just syntactic sugar for
+`WithoutArgs(Invoke(...))`.
+
+Here are more tips:
+
+*   The inner action used in `WithArgs` and friends does not have to be
+    `Invoke()` -- it can be anything.
+*   You can repeat an argument in the argument list if necessary, e.g.
+    `WithArgs<2, 3, 3, 5>(...)`.
+*   You can change the order of the arguments, e.g. `WithArgs<3, 2, 1>(...)`.
+*   The types of the selected arguments do *not* have to match the signature of
+    the inner action exactly. It works as long as they can be implicitly
+    converted to the corresponding arguments of the inner action. For example,
+    if the 4-th argument of the mock function is an `int` and `my_action` takes
+    a `double`, `WithArg<4>(my_action)` will work.
+
+### Ignoring Arguments in Action Functions
+
+The [selecting-an-action's-arguments](#SelectingArgs) recipe showed us one way
+to make a mock function and an action with incompatible argument lists fit
+together. The downside is that wrapping the action in `WithArgs<...>()` can get
+tedious for people writing the tests.
+
+If you are defining a function (or method, functor, lambda, callback) to be used
+with `Invoke*()`, and you are not interested in some of its arguments, an
+alternative to `WithArgs` is to declare the uninteresting arguments as `Unused`.
+This makes the definition less cluttered and less fragile in case the types of
+the uninteresting arguments change. It could also increase the chance the action
+function can be reused. For example, given
+
+```cpp
+ public:
+  MOCK_METHOD(double, Foo, double(const string& label, double x, double y),
+              (override));
+  MOCK_METHOD(double, Bar, (int index, double x, double y), (override));
+```
+
+instead of
+
+```cpp
+using ::testing::_;
+using ::testing::Invoke;
+
+double DistanceToOriginWithLabel(const string& label, double x, double y) {
+  return sqrt(x*x + y*y);
+}
+double DistanceToOriginWithIndex(int index, double x, double y) {
+  return sqrt(x*x + y*y);
+}
+...
+  EXPECT_CALL(mock, Foo("abc", _, _))
+      .WillOnce(Invoke(DistanceToOriginWithLabel));
+  EXPECT_CALL(mock, Bar(5, _, _))
+      .WillOnce(Invoke(DistanceToOriginWithIndex));
+```
+
+you could write
+
+```cpp
+using ::testing::_;
+using ::testing::Invoke;
+using ::testing::Unused;
+
+double DistanceToOrigin(Unused, double x, double y) {
+  return sqrt(x*x + y*y);
+}
+...
+  EXPECT_CALL(mock, Foo("abc", _, _))
+      .WillOnce(Invoke(DistanceToOrigin));
+  EXPECT_CALL(mock, Bar(5, _, _))
+      .WillOnce(Invoke(DistanceToOrigin));
+```
+
+### Sharing Actions
+
+Just like matchers, a gMock action object consists of a pointer to a ref-counted
+implementation object. Therefore copying actions is also allowed and very
+efficient. When the last action that references the implementation object dies,
+the implementation object will be deleted.
+
+If you have some complex action that you want to use again and again, you may
+not have to build it from scratch everytime. If the action doesn't have an
+internal state (i.e. if it always does the same thing no matter how many times
+it has been called), you can assign it to an action variable and use that
+variable repeatedly. For example:
+
+```cpp
+using ::testing::Action;
+using ::testing::DoAll;
+using ::testing::Return;
+using ::testing::SetArgPointee;
+...
+  Action<bool(int*)> set_flag = DoAll(SetArgPointee<0>(5),
+                                      Return(true));
+  ... use set_flag in .WillOnce() and .WillRepeatedly() ...
+```
+
+However, if the action has its own state, you may be surprised if you share the
+action object. Suppose you have an action factory `IncrementCounter(init)` which
+creates an action that increments and returns a counter whose initial value is
+`init`, using two actions created from the same expression and using a shared
+action will exhibit different behaviors. Example:
+
+```cpp
+  EXPECT_CALL(foo, DoThis())
+      .WillRepeatedly(IncrementCounter(0));
+  EXPECT_CALL(foo, DoThat())
+      .WillRepeatedly(IncrementCounter(0));
+  foo.DoThis();  // Returns 1.
+  foo.DoThis();  // Returns 2.
+  foo.DoThat();  // Returns 1 - Blah() uses a different
+                 // counter than Bar()'s.
+```
+
+versus
+
+```cpp
+using ::testing::Action;
+...
+  Action<int()> increment = IncrementCounter(0);
+  EXPECT_CALL(foo, DoThis())
+      .WillRepeatedly(increment);
+  EXPECT_CALL(foo, DoThat())
+      .WillRepeatedly(increment);
+  foo.DoThis();  // Returns 1.
+  foo.DoThis();  // Returns 2.
+  foo.DoThat();  // Returns 3 - the counter is shared.
+```
+
+### Testing Asynchronous Behavior
+
+One oft-encountered problem with gMock is that it can be hard to test
+asynchronous behavior. Suppose you had a `EventQueue` class that you wanted to
+test, and you created a separate `EventDispatcher` interface so that you could
+easily mock it out. However, the implementation of the class fired all the
+events on a background thread, which made test timings difficult. You could just
+insert `sleep()` statements and hope for the best, but that makes your test
+behavior nondeterministic. A better way is to use gMock actions and
+`Notification` objects to force your asynchronous test to behave synchronously.
+
+```cpp
+using ::testing::DoAll;
+using ::testing::InvokeWithoutArgs;
+using ::testing::Return;
+
+class MockEventDispatcher : public EventDispatcher {
+  MOCK_METHOD(bool, DispatchEvent, (int32), (override));
+};
+
+ACTION_P(Notify, notification) {
+  notification->Notify();
+}
+
+TEST(EventQueueTest, EnqueueEventTest) {
+  MockEventDispatcher mock_event_dispatcher;
+  EventQueue event_queue(&mock_event_dispatcher);
+
+  const int32 kEventId = 321;
+  Notification done;
+  EXPECT_CALL(mock_event_dispatcher, DispatchEvent(kEventId))
+      .WillOnce(Notify(&done));
+
+  event_queue.EnqueueEvent(kEventId);
+  done.WaitForNotification();
+}
+```
+
+In the example above, we set our normal gMock expectations, but then add an
+additional action to notify the `Notification` object. Now we can just call
+`Notification::WaitForNotification()` in the main thread to wait for the
+asynchronous call to finish. After that, our test suite is complete and we can
+safely exit.
+
+Note: this example has a downside: namely, if the expectation is not satisfied,
+our test will run forever. It will eventually time-out and fail, but it will
+take longer and be slightly harder to debug. To alleviate this problem, you can
+use `WaitForNotificationWithTimeout(ms)` instead of `WaitForNotification()`.
+
+## Misc Recipes on Using gMock
+
+### Mocking Methods That Use Move-Only Types
+
+C++11 introduced *move-only types*. A move-only-typed value can be moved from
+one object to another, but cannot be copied. `std::unique_ptr<T>` is probably
+the most commonly used move-only type.
+
+Mocking a method that takes and/or returns move-only types presents some
+challenges, but nothing insurmountable. This recipe shows you how you can do it.
+Note that the support for move-only method arguments was only introduced to
+gMock in April 2017; in older code, you may find more complex
+[workarounds](#LegacyMoveOnly) for lack of this feature.
+
+Let’s say we are working on a fictional project that lets one post and share
+snippets called “buzzes”. Your code uses these types:
+
+```cpp
+enum class AccessLevel { kInternal, kPublic };
+
+class Buzz {
+ public:
+  explicit Buzz(AccessLevel access) { ... }
+  ...
+};
+
+class Buzzer {
+ public:
+  virtual ~Buzzer() {}
+  virtual std::unique_ptr<Buzz> MakeBuzz(StringPiece text) = 0;
+  virtual bool ShareBuzz(std::unique_ptr<Buzz> buzz, int64_t timestamp) = 0;
+  ...
+};
+```
+
+A `Buzz` object represents a snippet being posted. A class that implements the
+`Buzzer` interface is capable of creating and sharing `Buzz`es. Methods in
+`Buzzer` may return a `unique_ptr<Buzz>` or take a `unique_ptr<Buzz>`. Now we
+need to mock `Buzzer` in our tests.
+
+To mock a method that accepts or returns move-only types, you just use the
+familiar `MOCK_METHOD` syntax as usual:
+
+```cpp
+class MockBuzzer : public Buzzer {
+ public:
+  MOCK_METHOD(std::unique_ptr<Buzz>, MakeBuzz, (StringPiece text), (override));
+  MOCK_METHOD(bool, ShareBuzz, (std::unique_ptr<Buzz> buzz, int64_t timestamp),
+              (override));
+};
+```
+
+Now that we have the mock class defined, we can use it in tests. In the
+following code examples, we assume that we have defined a `MockBuzzer` object
+named `mock_buzzer_`:
+
+```cpp
+  MockBuzzer mock_buzzer_;
+```
+
+First let’s see how we can set expectations on the `MakeBuzz()` method, which
+returns a `unique_ptr<Buzz>`.
+
+As usual, if you set an expectation without an action (i.e. the `.WillOnce()` or
+`.WillRepeatedly()` clause), when that expectation fires, the default action for
+that method will be taken. Since `unique_ptr<>` has a default constructor that
+returns a null `unique_ptr`, that’s what you’ll get if you don’t specify an
+action:
+
+```cpp
+  // Use the default action.
+  EXPECT_CALL(mock_buzzer_, MakeBuzz("hello"));
+
+  // Triggers the previous EXPECT_CALL.
+  EXPECT_EQ(nullptr, mock_buzzer_.MakeBuzz("hello"));
+```
+
+If you are not happy with the default action, you can tweak it as usual; see
+[Setting Default Actions](#OnCall).
+
+If you just need to return a pre-defined move-only value, you can use the
+`Return(ByMove(...))` action:
+
+```cpp
+  // When this fires, the unique_ptr<> specified by ByMove(...) will
+  // be returned.
+  EXPECT_CALL(mock_buzzer_, MakeBuzz("world"))
+      .WillOnce(Return(ByMove(MakeUnique<Buzz>(AccessLevel::kInternal))));
+
+  EXPECT_NE(nullptr, mock_buzzer_.MakeBuzz("world"));
+```
+
+Note that `ByMove()` is essential here - if you drop it, the code won’t compile.
+
+Quiz time! What do you think will happen if a `Return(ByMove(...))` action is
+performed more than once (e.g. you write `...
+.WillRepeatedly(Return(ByMove(...)));`)? Come think of it, after the first time
+the action runs, the source value will be consumed (since it’s a move-only
+value), so the next time around, there’s no value to move from -- you’ll get a
+run-time error that `Return(ByMove(...))` can only be run once.
+
+If you need your mock method to do more than just moving a pre-defined value,
+remember that you can always use a lambda or a callable object, which can do
+pretty much anything you want:
+
+```cpp
+  EXPECT_CALL(mock_buzzer_, MakeBuzz("x"))
+      .WillRepeatedly([](StringPiece text) {
+        return MakeUnique<Buzz>(AccessLevel::kInternal);
+      });
+
+  EXPECT_NE(nullptr, mock_buzzer_.MakeBuzz("x"));
+  EXPECT_NE(nullptr, mock_buzzer_.MakeBuzz("x"));
+```
+
+Every time this `EXPECT_CALL` fires, a new `unique_ptr<Buzz>` will be created
+and returned. You cannot do this with `Return(ByMove(...))`.
+
+That covers returning move-only values; but how do we work with methods
+accepting move-only arguments? The answer is that they work normally, although
+some actions will not compile when any of method's arguments are move-only. You
+can always use `Return`, or a [lambda or functor](#FunctionsAsActions):
+
+```cpp
+  using ::testing::Unused;
+
+  EXPECT_CALL(mock_buzzer_, ShareBuzz(NotNull(), _)).WillOnce(Return(true));
+  EXPECT_TRUE(mock_buzzer_.ShareBuzz(MakeUnique<Buzz>(AccessLevel::kInternal)),
+              0);
+
+  EXPECT_CALL(mock_buzzer_, ShareBuzz(_, _)).WillOnce(
+      [](std::unique_ptr<Buzz> buzz, Unused) { return buzz != nullptr; });
+  EXPECT_FALSE(mock_buzzer_.ShareBuzz(nullptr, 0));
+```
+
+Many built-in actions (`WithArgs`, `WithoutArgs`,`DeleteArg`, `SaveArg`, ...)
+could in principle support move-only arguments, but the support for this is not
+implemented yet. If this is blocking you, please file a bug.
+
+A few actions (e.g. `DoAll`) copy their arguments internally, so they can never
+work with non-copyable objects; you'll have to use functors instead.
+
+#### Legacy workarounds for move-only types {#LegacyMoveOnly}
+
+Support for move-only function arguments was only introduced to gMock in April
+2017. In older code, you may encounter the following workaround for the lack of
+this feature (it is no longer necessary - we're including it just for
+reference):
+
+```cpp
+class MockBuzzer : public Buzzer {
+ public:
+  MOCK_METHOD(bool, DoShareBuzz, (Buzz* buzz, Time timestamp));
+  bool ShareBuzz(std::unique_ptr<Buzz> buzz, Time timestamp) override {
+    return DoShareBuzz(buzz.get(), timestamp);
+  }
+};
+```
+
+The trick is to delegate the `ShareBuzz()` method to a mock method (let’s call
+it `DoShareBuzz()`) that does not take move-only parameters. Then, instead of
+setting expectations on `ShareBuzz()`, you set them on the `DoShareBuzz()` mock
+method:
+
+```cpp
+  MockBuzzer mock_buzzer_;
+  EXPECT_CALL(mock_buzzer_, DoShareBuzz(NotNull(), _));
+
+  // When one calls ShareBuzz() on the MockBuzzer like this, the call is
+  // forwarded to DoShareBuzz(), which is mocked.  Therefore this statement
+  // will trigger the above EXPECT_CALL.
+  mock_buzzer_.ShareBuzz(MakeUnique<Buzz>(AccessLevel::kInternal), 0);
+```
+
+### Making the Compilation Faster
+
+Believe it or not, the *vast majority* of the time spent on compiling a mock
+class is in generating its constructor and destructor, as they perform
+non-trivial tasks (e.g. verification of the expectations). What's more, mock
+methods with different signatures have different types and thus their
+constructors/destructors need to be generated by the compiler separately. As a
+result, if you mock many different types of methods, compiling your mock class
+can get really slow.
+
+If you are experiencing slow compilation, you can move the definition of your
+mock class' constructor and destructor out of the class body and into a `.cc`
+file. This way, even if you `#include` your mock class in N files, the compiler
+only needs to generate its constructor and destructor once, resulting in a much
+faster compilation.
+
+Let's illustrate the idea using an example. Here's the definition of a mock
+class before applying this recipe:
+
+```cpp
+// File mock_foo.h.
+...
+class MockFoo : public Foo {
+ public:
+  // Since we don't declare the constructor or the destructor,
+  // the compiler will generate them in every translation unit
+  // where this mock class is used.
+
+  MOCK_METHOD(int, DoThis, (), (override));
+  MOCK_METHOD(bool, DoThat, (const char* str), (override));
+  ... more mock methods ...
+};
+```
+
+After the change, it would look like:
+
+```cpp
+// File mock_foo.h.
+...
+class MockFoo : public Foo {
+ public:
+  // The constructor and destructor are declared, but not defined, here.
+  MockFoo();
+  virtual ~MockFoo();
+
+  MOCK_METHOD(int, DoThis, (), (override));
+  MOCK_METHOD(bool, DoThat, (const char* str), (override));
+  ... more mock methods ...
+};
+```
+
+and
+
+```cpp
+// File mock_foo.cc.
+#include "path/to/mock_foo.h"
+
+// The definitions may appear trivial, but the functions actually do a
+// lot of things through the constructors/destructors of the member
+// variables used to implement the mock methods.
+MockFoo::MockFoo() {}
+MockFoo::~MockFoo() {}
+```
+
+### Forcing a Verification
+
+When it's being destroyed, your friendly mock object will automatically verify
+that all expectations on it have been satisfied, and will generate googletest
+failures if not. This is convenient as it leaves you with one less thing to
+worry about. That is, unless you are not sure if your mock object will be
+destroyed.
+
+How could it be that your mock object won't eventually be destroyed? Well, it
+might be created on the heap and owned by the code you are testing. Suppose
+there's a bug in that code and it doesn't delete the mock object properly - you
+could end up with a passing test when there's actually a bug.
+
+Using a heap checker is a good idea and can alleviate the concern, but its
+implementation is not 100% reliable. So, sometimes you do want to *force* gMock
+to verify a mock object before it is (hopefully) destructed. You can do this
+with `Mock::VerifyAndClearExpectations(&mock_object)`:
+
+```cpp
+TEST(MyServerTest, ProcessesRequest) {
+  using ::testing::Mock;
+
+  MockFoo* const foo = new MockFoo;
+  EXPECT_CALL(*foo, ...)...;
+  // ... other expectations ...
+
+  // server now owns foo.
+  MyServer server(foo);
+  server.ProcessRequest(...);
+
+  // In case that server's destructor will forget to delete foo,
+  // this will verify the expectations anyway.
+  Mock::VerifyAndClearExpectations(foo);
+}  // server is destroyed when it goes out of scope here.
+```
+
+**Tip:** The `Mock::VerifyAndClearExpectations()` function returns a `bool` to
+indicate whether the verification was successful (`true` for yes), so you can
+wrap that function call inside a `ASSERT_TRUE()` if there is no point going
+further when the verification has failed.
+
+### Using Check Points {#UsingCheckPoints}
+
+Sometimes you may want to "reset" a mock object at various check points in your
+test: at each check point, you verify that all existing expectations on the mock
+object have been satisfied, and then you set some new expectations on it as if
+it's newly created. This allows you to work with a mock object in "phases" whose
+sizes are each manageable.
+
+One such scenario is that in your test's `SetUp()` function, you may want to put
+the object you are testing into a certain state, with the help from a mock
+object. Once in the desired state, you want to clear all expectations on the
+mock, such that in the `TEST_F` body you can set fresh expectations on it.
+
+As you may have figured out, the `Mock::VerifyAndClearExpectations()` function
+we saw in the previous recipe can help you here. Or, if you are using
+`ON_CALL()` to set default actions on the mock object and want to clear the
+default actions as well, use `Mock::VerifyAndClear(&mock_object)` instead. This
+function does what `Mock::VerifyAndClearExpectations(&mock_object)` does and
+returns the same `bool`, **plus** it clears the `ON_CALL()` statements on
+`mock_object` too.
+
+Another trick you can use to achieve the same effect is to put the expectations
+in sequences and insert calls to a dummy "check-point" function at specific
+places. Then you can verify that the mock function calls do happen at the right
+time. For example, if you are exercising code:
+
+```cpp
+  Foo(1);
+  Foo(2);
+  Foo(3);
+```
+
+and want to verify that `Foo(1)` and `Foo(3)` both invoke `mock.Bar("a")`, but
+`Foo(2)` doesn't invoke anything. You can write:
+
+```cpp
+using ::testing::MockFunction;
+
+TEST(FooTest, InvokesBarCorrectly) {
+  MyMock mock;
+  // Class MockFunction<F> has exactly one mock method.  It is named
+  // Call() and has type F.
+  MockFunction<void(string check_point_name)> check;
+  {
+    InSequence s;
+
+    EXPECT_CALL(mock, Bar("a"));
+    EXPECT_CALL(check, Call("1"));
+    EXPECT_CALL(check, Call("2"));
+    EXPECT_CALL(mock, Bar("a"));
+  }
+  Foo(1);
+  check.Call("1");
+  Foo(2);
+  check.Call("2");
+  Foo(3);
+}
+```
+
+The expectation spec says that the first `Bar("a")` must happen before check
+point "1", the second `Bar("a")` must happen after check point "2", and nothing
+should happen between the two check points. The explicit check points make it
+easy to tell which `Bar("a")` is called by which call to `Foo()`.
+
+### Mocking Destructors
+
+Sometimes you want to make sure a mock object is destructed at the right time,
+e.g. after `bar->A()` is called but before `bar->B()` is called. We already know
+that you can specify constraints on the [order](#OrderedCalls) of mock function
+calls, so all we need to do is to mock the destructor of the mock function.
+
+This sounds simple, except for one problem: a destructor is a special function
+with special syntax and special semantics, and the `MOCK_METHOD` macro doesn't
+work for it:
+
+```cpp
+MOCK_METHOD(void, ~MockFoo, ());  // Won't compile!
+```
+
+The good news is that you can use a simple pattern to achieve the same effect.
+First, add a mock function `Die()` to your mock class and call it in the
+destructor, like this:
+
+```cpp
+class MockFoo : public Foo {
+  ...
+  // Add the following two lines to the mock class.
+  MOCK_METHOD(void, Die, ());
+  virtual ~MockFoo() { Die(); }
+};
+```
+
+(If the name `Die()` clashes with an existing symbol, choose another name.) Now,
+we have translated the problem of testing when a `MockFoo` object dies to
+testing when its `Die()` method is called:
+
+```cpp
+  MockFoo* foo = new MockFoo;
+  MockBar* bar = new MockBar;
+  ...
+  {
+    InSequence s;
+
+    // Expects *foo to die after bar->A() and before bar->B().
+    EXPECT_CALL(*bar, A());
+    EXPECT_CALL(*foo, Die());
+    EXPECT_CALL(*bar, B());
+  }
+```
+
+And that's that.
+
+### Using gMock and Threads {#UsingThreads}
+
+In a **unit** test, it's best if you could isolate and test a piece of code in a
+single-threaded context. That avoids race conditions and dead locks, and makes
+debugging your test much easier.
+
+Yet most programs are multi-threaded, and sometimes to test something we need to
+pound on it from more than one thread. gMock works for this purpose too.
+
+Remember the steps for using a mock:
+
+1.  Create a mock object `foo`.
+2.  Set its default actions and expectations using `ON_CALL()` and
+    `EXPECT_CALL()`.
+3.  The code under test calls methods of `foo`.
+4.  Optionally, verify and reset the mock.
+5.  Destroy the mock yourself, or let the code under test destroy it. The
+    destructor will automatically verify it.
+
+If you follow the following simple rules, your mocks and threads can live
+happily together:
+
+*   Execute your *test code* (as opposed to the code being tested) in *one*
+    thread. This makes your test easy to follow.
+*   Obviously, you can do step #1 without locking.
+*   When doing step #2 and #5, make sure no other thread is accessing `foo`.
+    Obvious too, huh?
+*   #3 and #4 can be done either in one thread or in multiple threads - anyway
+    you want. gMock takes care of the locking, so you don't have to do any -
+    unless required by your test logic.
+
+If you violate the rules (for example, if you set expectations on a mock while
+another thread is calling its methods), you get undefined behavior. That's not
+fun, so don't do it.
+
+gMock guarantees that the action for a mock function is done in the same thread
+that called the mock function. For example, in
+
+```cpp
+  EXPECT_CALL(mock, Foo(1))
+      .WillOnce(action1);
+  EXPECT_CALL(mock, Foo(2))
+      .WillOnce(action2);
+```
+
+if `Foo(1)` is called in thread 1 and `Foo(2)` is called in thread 2, gMock will
+execute `action1` in thread 1 and `action2` in thread 2.
+
+gMock does *not* impose a sequence on actions performed in different threads
+(doing so may create deadlocks as the actions may need to cooperate). This means
+that the execution of `action1` and `action2` in the above example *may*
+interleave. If this is a problem, you should add proper synchronization logic to
+`action1` and `action2` to make the test thread-safe.
+
+Also, remember that `DefaultValue<T>` is a global resource that potentially
+affects *all* living mock objects in your program. Naturally, you won't want to
+mess with it from multiple threads or when there still are mocks in action.
+
+### Controlling How Much Information gMock Prints
+
+When gMock sees something that has the potential of being an error (e.g. a mock
+function with no expectation is called, a.k.a. an uninteresting call, which is
+allowed but perhaps you forgot to explicitly ban the call), it prints some
+warning messages, including the arguments of the function, the return value, and
+the stack trace. Hopefully this will remind you to take a look and see if there
+is indeed a problem.
+
+Sometimes you are confident that your tests are correct and may not appreciate
+such friendly messages. Some other times, you are debugging your tests or
+learning about the behavior of the code you are testing, and wish you could
+observe every mock call that happens (including argument values, the return
+value, and the stack trace). Clearly, one size doesn't fit all.
+
+You can control how much gMock tells you using the `--gmock_verbose=LEVEL`
+command-line flag, where `LEVEL` is a string with three possible values:
+
+*   `info`: gMock will print all informational messages, warnings, and errors
+    (most verbose). At this setting, gMock will also log any calls to the
+    `ON_CALL/EXPECT_CALL` macros. It will include a stack trace in
+    "uninteresting call" warnings.
+*   `warning`: gMock will print both warnings and errors (less verbose); it will
+    omit the stack traces in "uninteresting call" warnings. This is the default.
+*   `error`: gMock will print errors only (least verbose).
+
+Alternatively, you can adjust the value of that flag from within your tests like
+so:
+
+```cpp
+  ::testing::FLAGS_gmock_verbose = "error";
+```
+
+If you find gMock printing too many stack frames with its informational or
+warning messages, remember that you can control their amount with the
+`--gtest_stack_trace_depth=max_depth` flag.
+
+Now, judiciously use the right flag to enable gMock serve you better!
+
+### Gaining Super Vision into Mock Calls
+
+You have a test using gMock. It fails: gMock tells you some expectations aren't
+satisfied. However, you aren't sure why: Is there a typo somewhere in the
+matchers? Did you mess up the order of the `EXPECT_CALL`s? Or is the code under
+test doing something wrong? How can you find out the cause?
+
+Won't it be nice if you have X-ray vision and can actually see the trace of all
+`EXPECT_CALL`s and mock method calls as they are made? For each call, would you
+like to see its actual argument values and which `EXPECT_CALL` gMock thinks it
+matches? If you still need some help to figure out who made these calls, how
+about being able to see the complete stack trace at each mock call?
+
+You can unlock this power by running your test with the `--gmock_verbose=info`
+flag. For example, given the test program:
+
+```cpp
+#include "gmock/gmock.h"
+
+using testing::_;
+using testing::HasSubstr;
+using testing::Return;
+
+class MockFoo {
+ public:
+  MOCK_METHOD(void, F, (const string& x, const string& y));
+};
+
+TEST(Foo, Bar) {
+  MockFoo mock;
+  EXPECT_CALL(mock, F(_, _)).WillRepeatedly(Return());
+  EXPECT_CALL(mock, F("a", "b"));
+  EXPECT_CALL(mock, F("c", HasSubstr("d")));
+
+  mock.F("a", "good");
+  mock.F("a", "b");
+}
+```
+
+if you run it with `--gmock_verbose=info`, you will see this output:
+
+```shell
+[ RUN       ] Foo.Bar
+
+foo_test.cc:14: EXPECT_CALL(mock, F(_, _)) invoked
+Stack trace: ...
+
+foo_test.cc:15: EXPECT_CALL(mock, F("a", "b")) invoked
+Stack trace: ...
+
+foo_test.cc:16: EXPECT_CALL(mock, F("c", HasSubstr("d"))) invoked
+Stack trace: ...
+
+foo_test.cc:14: Mock function call matches EXPECT_CALL(mock, F(_, _))...
+    Function call: F(@0x7fff7c8dad40"a",@0x7fff7c8dad10"good")
+Stack trace: ...
+
+foo_test.cc:15: Mock function call matches EXPECT_CALL(mock, F("a", "b"))...
+    Function call: F(@0x7fff7c8dada0"a",@0x7fff7c8dad70"b")
+Stack trace: ...
+
+foo_test.cc:16: Failure
+Actual function call count doesn't match EXPECT_CALL(mock, F("c", HasSubstr("d")))...
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+[  FAILED  ] Foo.Bar
+```
+
+Suppose the bug is that the `"c"` in the third `EXPECT_CALL` is a typo and
+should actually be `"a"`. With the above message, you should see that the actual
+`F("a", "good")` call is matched by the first `EXPECT_CALL`, not the third as
+you thought. From that it should be obvious that the third `EXPECT_CALL` is
+written wrong. Case solved.
+
+If you are interested in the mock call trace but not the stack traces, you can
+combine `--gmock_verbose=info` with `--gtest_stack_trace_depth=0` on the test
+command line.
+
+<!-- GOOGLETEST_CM0025 DO NOT DELETE -->
+
+### Running Tests in Emacs
+
+If you build and run your tests in Emacs using the `M-x google-compile` command
+(as many googletest users do), the source file locations of gMock and googletest
+errors will be highlighted. Just press `<Enter>` on one of them and you'll be
+taken to the offending line. Or, you can just type `C-x`` to jump to the next
+error.
+
+To make it even easier, you can add the following lines to your `~/.emacs` file:
+
+```text
+(global-set-key "\M-m"  'google-compile)  ; m is for make
+(global-set-key [M-down] 'next-error)
+(global-set-key [M-up]  '(lambda () (interactive) (next-error -1)))
+```
+
+Then you can type `M-m` to start a build (if you want to run the test as well,
+just make sure `foo_test.run` or `runtests` is in the build command you supply
+after typing `M-m`), or `M-up`/`M-down` to move back and forth between errors.
+
+## Extending gMock
+
+### Writing New Matchers Quickly {#NewMatchers}
+
+WARNING: gMock does not guarantee when or how many times a matcher will be
+invoked. Therefore, all matchers must be functionally pure. See
+[this section](#PureMatchers) for more details.
+
+The `MATCHER*` family of macros can be used to define custom matchers easily.
+The syntax:
+
+```cpp
+MATCHER(name, description_string_expression) { statements; }
+```
+
+will define a matcher with the given name that executes the statements, which
+must return a `bool` to indicate if the match succeeds. Inside the statements,
+you can refer to the value being matched by `arg`, and refer to its type by
+`arg_type`.
+
+The *description string* is a `string`-typed expression that documents what the
+matcher does, and is used to generate the failure message when the match fails.
+It can (and should) reference the special `bool` variable `negation`, and should
+evaluate to the description of the matcher when `negation` is `false`, or that
+of the matcher's negation when `negation` is `true`.
+
+For convenience, we allow the description string to be empty (`""`), in which
+case gMock will use the sequence of words in the matcher name as the
+description.
+
+For example:
+
+```cpp
+MATCHER(IsDivisibleBy7, "") { return (arg % 7) == 0; }
+```
+
+allows you to write
+
+```cpp
+  // Expects mock_foo.Bar(n) to be called where n is divisible by 7.
+  EXPECT_CALL(mock_foo, Bar(IsDivisibleBy7()));
+```
+
+or,
+
+```cpp
+  using ::testing::Not;
+  ...
+  // Verifies that two values are divisible by 7.
+  EXPECT_THAT(some_expression, IsDivisibleBy7());
+  EXPECT_THAT(some_other_expression, Not(IsDivisibleBy7()));
+```
+
+If the above assertions fail, they will print something like:
+
+```shell
+  Value of: some_expression
+  Expected: is divisible by 7
+    Actual: 27
+  ...
+  Value of: some_other_expression
+  Expected: not (is divisible by 7)
+    Actual: 21
+```
+
+where the descriptions `"is divisible by 7"` and `"not (is divisible by 7)"` are
+automatically calculated from the matcher name `IsDivisibleBy7`.
+
+As you may have noticed, the auto-generated descriptions (especially those for
+the negation) may not be so great. You can always override them with a `string`
+expression of your own:
+
+```cpp
+MATCHER(IsDivisibleBy7,
+        absl::StrCat(negation ? "isn't" : "is", " divisible by 7")) {
+  return (arg % 7) == 0;
+}
+```
+
+Optionally, you can stream additional information to a hidden argument named
+`result_listener` to explain the match result. For example, a better definition
+of `IsDivisibleBy7` is:
+
+```cpp
+MATCHER(IsDivisibleBy7, "") {
+  if ((arg % 7) == 0)
+    return true;
+
+  *result_listener << "the remainder is " << (arg % 7);
+  return false;
+}
+```
+
+With this definition, the above assertion will give a better message:
+
+```shell
+  Value of: some_expression
+  Expected: is divisible by 7
+    Actual: 27 (the remainder is 6)
+```
+
+You should let `MatchAndExplain()` print *any additional information* that can
+help a user understand the match result. Note that it should explain why the
+match succeeds in case of a success (unless it's obvious) - this is useful when
+the matcher is used inside `Not()`. There is no need to print the argument value
+itself, as gMock already prints it for you.
+
+NOTE: The type of the value being matched (`arg_type`) is determined by the
+context in which you use the matcher and is supplied to you by the compiler, so
+you don't need to worry about declaring it (nor can you). This allows the
+matcher to be polymorphic. For example, `IsDivisibleBy7()` can be used to match
+any type where the value of `(arg % 7) == 0` can be implicitly converted to a
+`bool`. In the `Bar(IsDivisibleBy7())` example above, if method `Bar()` takes an
+`int`, `arg_type` will be `int`; if it takes an `unsigned long`, `arg_type` will
+be `unsigned long`; and so on.
+
+### Writing New Parameterized Matchers Quickly
+
+Sometimes you'll want to define a matcher that has parameters. For that you can
+use the macro:
+
+```cpp
+MATCHER_P(name, param_name, description_string) { statements; }
+```
+
+where the description string can be either `""` or a `string` expression that
+references `negation` and `param_name`.
+
+For example:
+
+```cpp
+MATCHER_P(HasAbsoluteValue, value, "") { return abs(arg) == value; }
+```
+
+will allow you to write:
+
+```cpp
+  EXPECT_THAT(Blah("a"), HasAbsoluteValue(n));
+```
+
+which may lead to this message (assuming `n` is 10):
+
+```shell
+  Value of: Blah("a")
+  Expected: has absolute value 10
+    Actual: -9
+```
+
+Note that both the matcher description and its parameter are printed, making the
+message human-friendly.
+
+In the matcher definition body, you can write `foo_type` to reference the type
+of a parameter named `foo`. For example, in the body of
+`MATCHER_P(HasAbsoluteValue, value)` above, you can write `value_type` to refer
+to the type of `value`.
+
+gMock also provides `MATCHER_P2`, `MATCHER_P3`, ..., up to `MATCHER_P10` to
+support multi-parameter matchers:
+
+```cpp
+MATCHER_Pk(name, param_1, ..., param_k, description_string) { statements; }
+```
+
+Please note that the custom description string is for a particular *instance* of
+the matcher, where the parameters have been bound to actual values. Therefore
+usually you'll want the parameter values to be part of the description. gMock
+lets you do that by referencing the matcher parameters in the description string
+expression.
+
+For example,
+
+```cpp
+using ::testing::PrintToString;
+MATCHER_P2(InClosedRange, low, hi,
+           absl::StrFormat("%s in range [%s, %s]", negation ? "isn't" : "is",
+                           PrintToString(low), PrintToString(hi))) {
+  return low <= arg && arg <= hi;
+}
+...
+EXPECT_THAT(3, InClosedRange(4, 6));
+```
+
+would generate a failure that contains the message:
+
+```shell
+  Expected: is in range [4, 6]
+```
+
+If you specify `""` as the description, the failure message will contain the
+sequence of words in the matcher name followed by the parameter values printed
+as a tuple. For example,
+
+```cpp
+  MATCHER_P2(InClosedRange, low, hi, "") { ... }
+  ...
+  EXPECT_THAT(3, InClosedRange(4, 6));
+```
+
+would generate a failure that contains the text:
+
+```shell
+  Expected: in closed range (4, 6)
+```
+
+For the purpose of typing, you can view
+
+```cpp
+MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
+```
+
+as shorthand for
+
+```cpp
+template <typename p1_type, ..., typename pk_type>
+FooMatcherPk<p1_type, ..., pk_type>
+Foo(p1_type p1, ..., pk_type pk) { ... }
+```
+
+When you write `Foo(v1, ..., vk)`, the compiler infers the types of the
+parameters `v1`, ..., and `vk` for you. If you are not happy with the result of
+the type inference, you can specify the types by explicitly instantiating the
+template, as in `Foo<long, bool>(5, false)`. As said earlier, you don't get to
+(or need to) specify `arg_type` as that's determined by the context in which the
+matcher is used.
+
+You can assign the result of expression `Foo(p1, ..., pk)` to a variable of type
+`FooMatcherPk<p1_type, ..., pk_type>`. This can be useful when composing
+matchers. Matchers that don't have a parameter or have only one parameter have
+special types: you can assign `Foo()` to a `FooMatcher`-typed variable, and
+assign `Foo(p)` to a `FooMatcherP<p_type>`-typed variable.
+
+While you can instantiate a matcher template with reference types, passing the
+parameters by pointer usually makes your code more readable. If, however, you
+still want to pass a parameter by reference, be aware that in the failure
+message generated by the matcher you will see the value of the referenced object
+but not its address.
+
+You can overload matchers with different numbers of parameters:
+
+```cpp
+MATCHER_P(Blah, a, description_string_1) { ... }
+MATCHER_P2(Blah, a, b, description_string_2) { ... }
+```
+
+While it's tempting to always use the `MATCHER*` macros when defining a new
+matcher, you should also consider implementing `MatcherInterface` or using
+`MakePolymorphicMatcher()` instead (see the recipes that follow), especially if
+you need to use the matcher a lot. While these approaches require more work,
+they give you more control on the types of the value being matched and the
+matcher parameters, which in general leads to better compiler error messages
+that pay off in the long run. They also allow overloading matchers based on
+parameter types (as opposed to just based on the number of parameters).
+
+### Writing New Monomorphic Matchers
+
+A matcher of argument type `T` implements `::testing::MatcherInterface<T>` and
+does two things: it tests whether a value of type `T` matches the matcher, and
+can describe what kind of values it matches. The latter ability is used for
+generating readable error messages when expectations are violated.
+
+The interface looks like this:
+
+```cpp
+class MatchResultListener {
+ public:
+  ...
+  // Streams x to the underlying ostream; does nothing if the ostream
+  // is NULL.
+  template <typename T>
+  MatchResultListener& operator<<(const T& x);
+
+  // Returns the underlying ostream.
+  ::std::ostream* stream();
+};
+
+template <typename T>
+class MatcherInterface {
+ public:
+  virtual ~MatcherInterface();
+
+  // Returns true if and only if the matcher matches x; also explains the match
+  // result to 'listener'.
+  virtual bool MatchAndExplain(T x, MatchResultListener* listener) const = 0;
+
+  // Describes this matcher to an ostream.
+  virtual void DescribeTo(::std::ostream* os) const = 0;
+
+  // Describes the negation of this matcher to an ostream.
+  virtual void DescribeNegationTo(::std::ostream* os) const;
+};
+```
+
+If you need a custom matcher but `Truly()` is not a good option (for example,
+you may not be happy with the way `Truly(predicate)` describes itself, or you
+may want your matcher to be polymorphic as `Eq(value)` is), you can define a
+matcher to do whatever you want in two steps: first implement the matcher
+interface, and then define a factory function to create a matcher instance. The
+second step is not strictly needed but it makes the syntax of using the matcher
+nicer.
+
+For example, you can define a matcher to test whether an `int` is divisible by 7
+and then use it like this:
+
+```cpp
+using ::testing::MakeMatcher;
+using ::testing::Matcher;
+using ::testing::MatcherInterface;
+using ::testing::MatchResultListener;
+
+class DivisibleBy7Matcher : public MatcherInterface<int> {
+ public:
+  bool MatchAndExplain(int n,
+                       MatchResultListener* /* listener */) const override {
+    return (n % 7) == 0;
+  }
+
+  void DescribeTo(::std::ostream* os) const override {
+    *os << "is divisible by 7";
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const override {
+    *os << "is not divisible by 7";
+  }
+};
+
+Matcher<int> DivisibleBy7() {
+  return MakeMatcher(new DivisibleBy7Matcher);
+}
+
+...
+  EXPECT_CALL(foo, Bar(DivisibleBy7()));
+```
+
+You may improve the matcher message by streaming additional information to the
+`listener` argument in `MatchAndExplain()`:
+
+```cpp
+class DivisibleBy7Matcher : public MatcherInterface<int> {
+ public:
+  bool MatchAndExplain(int n,
+                       MatchResultListener* listener) const override {
+    const int remainder = n % 7;
+    if (remainder != 0) {
+      *listener << "the remainder is " << remainder;
+    }
+    return remainder == 0;
+  }
+  ...
+};
+```
+
+Then, `EXPECT_THAT(x, DivisibleBy7());` may generate a message like this:
+
+```shell
+Value of: x
+Expected: is divisible by 7
+  Actual: 23 (the remainder is 2)
+```
+
+### Writing New Polymorphic Matchers
+
+You've learned how to write your own matchers in the previous recipe. Just one
+problem: a matcher created using `MakeMatcher()` only works for one particular
+type of arguments. If you want a *polymorphic* matcher that works with arguments
+of several types (for instance, `Eq(x)` can be used to match a *`value`* as long
+as `value == x` compiles -- *`value`* and `x` don't have to share the same
+type), you can learn the trick from `testing/base/public/gmock-matchers.h` but
+it's a bit involved.
+
+Fortunately, most of the time you can define a polymorphic matcher easily with
+the help of `MakePolymorphicMatcher()`. Here's how you can define `NotNull()` as
+an example:
+
+```cpp
+using ::testing::MakePolymorphicMatcher;
+using ::testing::MatchResultListener;
+using ::testing::PolymorphicMatcher;
+
+class NotNullMatcher {
+ public:
+  // To implement a polymorphic matcher, first define a COPYABLE class
+  // that has three members MatchAndExplain(), DescribeTo(), and
+  // DescribeNegationTo(), like the following.
+
+  // In this example, we want to use NotNull() with any pointer, so
+  // MatchAndExplain() accepts a pointer of any type as its first argument.
+  // In general, you can define MatchAndExplain() as an ordinary method or
+  // a method template, or even overload it.
+  template <typename T>
+  bool MatchAndExplain(T* p,
+                       MatchResultListener* /* listener */) const {
+    return p != NULL;
+  }
+
+  // Describes the property of a value matching this matcher.
+  void DescribeTo(std::ostream* os) const { *os << "is not NULL"; }
+
+  // Describes the property of a value NOT matching this matcher.
+  void DescribeNegationTo(std::ostream* os) const { *os << "is NULL"; }
+};
+
+// To construct a polymorphic matcher, pass an instance of the class
+// to MakePolymorphicMatcher().  Note the return type.
+PolymorphicMatcher<NotNullMatcher> NotNull() {
+  return MakePolymorphicMatcher(NotNullMatcher());
+}
+
+...
+
+  EXPECT_CALL(foo, Bar(NotNull()));  // The argument must be a non-NULL pointer.
+```
+
+**Note:** Your polymorphic matcher class does **not** need to inherit from
+`MatcherInterface` or any other class, and its methods do **not** need to be
+virtual.
+
+Like in a monomorphic matcher, you may explain the match result by streaming
+additional information to the `listener` argument in `MatchAndExplain()`.
+
+### Writing New Cardinalities
+
+A cardinality is used in `Times()` to tell gMock how many times you expect a
+call to occur. It doesn't have to be exact. For example, you can say
+`AtLeast(5)` or `Between(2, 4)`.
+
+If the [built-in set](cheat_sheet.md#CardinalityList) of cardinalities doesn't
+suit you, you are free to define your own by implementing the following
+interface (in namespace `testing`):
+
+```cpp
+class CardinalityInterface {
+ public:
+  virtual ~CardinalityInterface();
+
+  // Returns true if and only if call_count calls will satisfy this cardinality.
+  virtual bool IsSatisfiedByCallCount(int call_count) const = 0;
+
+  // Returns true if and only if call_count calls will saturate this
+  // cardinality.
+  virtual bool IsSaturatedByCallCount(int call_count) const = 0;
+
+  // Describes self to an ostream.
+  virtual void DescribeTo(std::ostream* os) const = 0;
+};
+```
+
+For example, to specify that a call must occur even number of times, you can
+write
+
+```cpp
+using ::testing::Cardinality;
+using ::testing::CardinalityInterface;
+using ::testing::MakeCardinality;
+
+class EvenNumberCardinality : public CardinalityInterface {
+ public:
+  bool IsSatisfiedByCallCount(int call_count) const override {
+    return (call_count % 2) == 0;
+  }
+
+  bool IsSaturatedByCallCount(int call_count) const override {
+    return false;
+  }
+
+  void DescribeTo(std::ostream* os) const {
+    *os << "called even number of times";
+  }
+};
+
+Cardinality EvenNumber() {
+  return MakeCardinality(new EvenNumberCardinality);
+}
+
+...
+  EXPECT_CALL(foo, Bar(3))
+      .Times(EvenNumber());
+```
+
+### Writing New Actions Quickly {#QuickNewActions}
+
+If the built-in actions don't work for you, you can easily define your own one.
+Just define a functor class with a (possibly templated) call operator, matching
+the signature of your action.
+
+```cpp
+struct Increment {
+  template <typename T>
+  T operator()(T* arg) {
+    return ++(*arg);
+  }
+}
+```
+
+The same approach works with stateful functors (or any callable, really):
+
+```
+struct MultiplyBy {
+  template <typename T>
+  T operator()(T arg) { return arg * multiplier; }
+
+  int multiplier;
+}
+
+// Then use:
+// EXPECT_CALL(...).WillOnce(MultiplyBy{7});
+```
+
+#### Legacy macro-based Actions
+
+Before C++11, the functor-based actions were not supported; the old way of
+writing actions was through a set of `ACTION*` macros. We suggest to avoid them
+in new code; they hide a lot of logic behind the macro, potentially leading to
+harder-to-understand compiler errors. Nevertheless, we cover them here for
+completeness.
+
+By writing
+
+```cpp
+ACTION(name) { statements; }
+```
+
+in a namespace scope (i.e. not inside a class or function), you will define an
+action with the given name that executes the statements. The value returned by
+`statements` will be used as the return value of the action. Inside the
+statements, you can refer to the K-th (0-based) argument of the mock function as
+`argK`. For example:
+
+```cpp
+ACTION(IncrementArg1) { return ++(*arg1); }
+```
+
+allows you to write
+
+```cpp
+... WillOnce(IncrementArg1());
+```
+
+Note that you don't need to specify the types of the mock function arguments.
+Rest assured that your code is type-safe though: you'll get a compiler error if
+`*arg1` doesn't support the `++` operator, or if the type of `++(*arg1)` isn't
+compatible with the mock function's return type.
+
+Another example:
+
+```cpp
+ACTION(Foo) {
+  (*arg2)(5);
+  Blah();
+  *arg1 = 0;
+  return arg0;
+}
+```
+
+defines an action `Foo()` that invokes argument #2 (a function pointer) with 5,
+calls function `Blah()`, sets the value pointed to by argument #1 to 0, and
+returns argument #0.
+
+For more convenience and flexibility, you can also use the following pre-defined
+symbols in the body of `ACTION`:
+
+`argK_type`     | The type of the K-th (0-based) argument of the mock function
+:-------------- | :-----------------------------------------------------------
+`args`          | All arguments of the mock function as a tuple
+`args_type`     | The type of all arguments of the mock function as a tuple
+`return_type`   | The return type of the mock function
+`function_type` | The type of the mock function
+
+For example, when using an `ACTION` as a stub action for mock function:
+
+```cpp
+int DoSomething(bool flag, int* ptr);
+```
+
+we have:
+
+Pre-defined Symbol | Is Bound To
+------------------ | ---------------------------------
+`arg0`             | the value of `flag`
+`arg0_type`        | the type `bool`
+`arg1`             | the value of `ptr`
+`arg1_type`        | the type `int*`
+`args`             | the tuple `(flag, ptr)`
+`args_type`        | the type `std::tuple<bool, int*>`
+`return_type`      | the type `int`
+`function_type`    | the type `int(bool, int*)`
+
+#### Legacy macro-based parameterized Actions
+
+Sometimes you'll want to parameterize an action you define. For that we have
+another macro
+
+```cpp
+ACTION_P(name, param) { statements; }
+```
+
+For example,
+
+```cpp
+ACTION_P(Add, n) { return arg0 + n; }
+```
+
+will allow you to write
+
+```cpp
+// Returns argument #0 + 5.
+... WillOnce(Add(5));
+```
+
+For convenience, we use the term *arguments* for the values used to invoke the
+mock function, and the term *parameters* for the values used to instantiate an
+action.
+
+Note that you don't need to provide the type of the parameter either. Suppose
+the parameter is named `param`, you can also use the gMock-defined symbol
+`param_type` to refer to the type of the parameter as inferred by the compiler.
+For example, in the body of `ACTION_P(Add, n)` above, you can write `n_type` for
+the type of `n`.
+
+gMock also provides `ACTION_P2`, `ACTION_P3`, and etc to support multi-parameter
+actions. For example,
+
+```cpp
+ACTION_P2(ReturnDistanceTo, x, y) {
+  double dx = arg0 - x;
+  double dy = arg1 - y;
+  return sqrt(dx*dx + dy*dy);
+}
+```
+
+lets you write
+
+```cpp
+... WillOnce(ReturnDistanceTo(5.0, 26.5));
+```
+
+You can view `ACTION` as a degenerated parameterized action where the number of
+parameters is 0.
+
+You can also easily define actions overloaded on the number of parameters:
+
+```cpp
+ACTION_P(Plus, a) { ... }
+ACTION_P2(Plus, a, b) { ... }
+```
+
+### Restricting the Type of an Argument or Parameter in an ACTION
+
+For maximum brevity and reusability, the `ACTION*` macros don't ask you to
+provide the types of the mock function arguments and the action parameters.
+Instead, we let the compiler infer the types for us.
+
+Sometimes, however, we may want to be more explicit about the types. There are
+several tricks to do that. For example:
+
+```cpp
+ACTION(Foo) {
+  // Makes sure arg0 can be converted to int.
+  int n = arg0;
+  ... use n instead of arg0 here ...
+}
+
+ACTION_P(Bar, param) {
+  // Makes sure the type of arg1 is const char*.
+  ::testing::StaticAssertTypeEq<const char*, arg1_type>();
+
+  // Makes sure param can be converted to bool.
+  bool flag = param;
+}
+```
+
+where `StaticAssertTypeEq` is a compile-time assertion in googletest that
+verifies two types are the same.
+
+### Writing New Action Templates Quickly
+
+Sometimes you want to give an action explicit template parameters that cannot be
+inferred from its value parameters. `ACTION_TEMPLATE()` supports that and can be
+viewed as an extension to `ACTION()` and `ACTION_P*()`.
+
+The syntax:
+
+```cpp
+ACTION_TEMPLATE(ActionName,
+                HAS_m_TEMPLATE_PARAMS(kind1, name1, ..., kind_m, name_m),
+                AND_n_VALUE_PARAMS(p1, ..., p_n)) { statements; }
+```
+
+defines an action template that takes *m* explicit template parameters and *n*
+value parameters, where *m* is in [1, 10] and *n* is in [0, 10]. `name_i` is the
+name of the *i*-th template parameter, and `kind_i` specifies whether it's a
+`typename`, an integral constant, or a template. `p_i` is the name of the *i*-th
+value parameter.
+
+Example:
+
+```cpp
+// DuplicateArg<k, T>(output) converts the k-th argument of the mock
+// function to type T and copies it to *output.
+ACTION_TEMPLATE(DuplicateArg,
+                // Note the comma between int and k:
+                HAS_2_TEMPLATE_PARAMS(int, k, typename, T),
+                AND_1_VALUE_PARAMS(output)) {
+  *output = T(::std::get<k>(args));
+}
+```
+
+To create an instance of an action template, write:
+
+```cpp
+ActionName<t1, ..., t_m>(v1, ..., v_n)
+```
+
+where the `t`s are the template arguments and the `v`s are the value arguments.
+The value argument types are inferred by the compiler. For example:
+
+```cpp
+using ::testing::_;
+...
+  int n;
+  EXPECT_CALL(mock, Foo).WillOnce(DuplicateArg<1, unsigned char>(&n));
+```
+
+If you want to explicitly specify the value argument types, you can provide
+additional template arguments:
+
+```cpp
+ActionName<t1, ..., t_m, u1, ..., u_k>(v1, ..., v_n)
+```
+
+where `u_i` is the desired type of `v_i`.
+
+`ACTION_TEMPLATE` and `ACTION`/`ACTION_P*` can be overloaded on the number of
+value parameters, but not on the number of template parameters. Without the
+restriction, the meaning of the following is unclear:
+
+```cpp
+  OverloadedAction<int, bool>(x);
+```
+
+Are we using a single-template-parameter action where `bool` refers to the type
+of `x`, or a two-template-parameter action where the compiler is asked to infer
+the type of `x`?
+
+### Using the ACTION Object's Type
+
+If you are writing a function that returns an `ACTION` object, you'll need to
+know its type. The type depends on the macro used to define the action and the
+parameter types. The rule is relatively simple:
+
+| Given Definition              | Expression          | Has Type              |
+| ----------------------------- | ------------------- | --------------------- |
+| `ACTION(Foo)`                 | `Foo()`             | `FooAction`           |
+| `ACTION_TEMPLATE(Foo,`        | `Foo<t1, ...,       | `FooAction<t1, ...,   |
+: `HAS_m_TEMPLATE_PARAMS(...),` : t_m>()`             : t_m>`                 :
+: `AND_0_VALUE_PARAMS())`       :                     :                       :
+| `ACTION_P(Bar, param)`        | `Bar(int_value)`    | `BarActionP<int>`     |
+| `ACTION_TEMPLATE(Bar,`        | `Bar<t1, ..., t_m>` | `FooActionP<t1, ...,  |
+: `HAS_m_TEMPLATE_PARAMS(...),` : `(int_value)`       : t_m, int>`            :
+: `AND_1_VALUE_PARAMS(p1))`     :                     :                       :
+| `ACTION_P2(Baz, p1, p2)`      | `Baz(bool_value,`   | `BazActionP2<bool,    |
+:                               : `int_value)`        : int>`                 :
+| `ACTION_TEMPLATE(Baz,`        | `Baz<t1, ..., t_m>` | `FooActionP2<t1, ..., |
+: `HAS_m_TEMPLATE_PARAMS(...),` : `(bool_value,`      : t_m,` `bool, int>`    :
+: `AND_2_VALUE_PARAMS(p1, p2))` : `int_value)`        :                       :
+| ...                           | ...                 | ...                   |
+
+Note that we have to pick different suffixes (`Action`, `ActionP`, `ActionP2`,
+and etc) for actions with different numbers of value parameters, or the action
+definitions cannot be overloaded on the number of them.
+
+### Writing New Monomorphic Actions {#NewMonoActions}
+
+While the `ACTION*` macros are very convenient, sometimes they are
+inappropriate. For example, despite the tricks shown in the previous recipes,
+they don't let you directly specify the types of the mock function arguments and
+the action parameters, which in general leads to unoptimized compiler error
+messages that can baffle unfamiliar users. They also don't allow overloading
+actions based on parameter types without jumping through some hoops.
+
+An alternative to the `ACTION*` macros is to implement
+`::testing::ActionInterface<F>`, where `F` is the type of the mock function in
+which the action will be used. For example:
+
+```cpp
+template <typename F>
+class ActionInterface {
+ public:
+  virtual ~ActionInterface();
+
+  // Performs the action.  Result is the return type of function type
+  // F, and ArgumentTuple is the tuple of arguments of F.
+  //
+
+  // For example, if F is int(bool, const string&), then Result would
+  // be int, and ArgumentTuple would be ::std::tuple<bool, const string&>.
+  virtual Result Perform(const ArgumentTuple& args) = 0;
+};
+```
+
+```cpp
+using ::testing::_;
+using ::testing::Action;
+using ::testing::ActionInterface;
+using ::testing::MakeAction;
+
+typedef int IncrementMethod(int*);
+
+class IncrementArgumentAction : public ActionInterface<IncrementMethod> {
+ public:
+  int Perform(const ::std::tuple<int*>& args) override {
+    int* p = ::std::get<0>(args);  // Grabs the first argument.
+    return *p++;
+  }
+};
+
+Action<IncrementMethod> IncrementArgument() {
+  return MakeAction(new IncrementArgumentAction);
+}
+
+...
+  EXPECT_CALL(foo, Baz(_))
+      .WillOnce(IncrementArgument());
+
+  int n = 5;
+  foo.Baz(&n);  // Should return 5 and change n to 6.
+```
+
+### Writing New Polymorphic Actions {#NewPolyActions}
+
+The previous recipe showed you how to define your own action. This is all good,
+except that you need to know the type of the function in which the action will
+be used. Sometimes that can be a problem. For example, if you want to use the
+action in functions with *different* types (e.g. like `Return()` and
+`SetArgPointee()`).
+
+If an action can be used in several types of mock functions, we say it's
+*polymorphic*. The `MakePolymorphicAction()` function template makes it easy to
+define such an action:
+
+```cpp
+namespace testing {
+template <typename Impl>
+PolymorphicAction<Impl> MakePolymorphicAction(const Impl& impl);
+}  // namespace testing
+```
+
+As an example, let's define an action that returns the second argument in the
+mock function's argument list. The first step is to define an implementation
+class:
+
+```cpp
+class ReturnSecondArgumentAction {
+ public:
+  template <typename Result, typename ArgumentTuple>
+  Result Perform(const ArgumentTuple& args) const {
+    // To get the i-th (0-based) argument, use ::std::get(args).
+    return ::std::get<1>(args);
+  }
+};
+```
+
+This implementation class does *not* need to inherit from any particular class.
+What matters is that it must have a `Perform()` method template. This method
+template takes the mock function's arguments as a tuple in a **single**
+argument, and returns the result of the action. It can be either `const` or not,
+but must be invokable with exactly one template argument, which is the result
+type. In other words, you must be able to call `Perform<R>(args)` where `R` is
+the mock function's return type and `args` is its arguments in a tuple.
+
+Next, we use `MakePolymorphicAction()` to turn an instance of the implementation
+class into the polymorphic action we need. It will be convenient to have a
+wrapper for this:
+
+```cpp
+using ::testing::MakePolymorphicAction;
+using ::testing::PolymorphicAction;
+
+PolymorphicAction<ReturnSecondArgumentAction> ReturnSecondArgument() {
+  return MakePolymorphicAction(ReturnSecondArgumentAction());
+}
+```
+
+Now, you can use this polymorphic action the same way you use the built-in ones:
+
+```cpp
+using ::testing::_;
+
+class MockFoo : public Foo {
+ public:
+  MOCK_METHOD(int, DoThis, (bool flag, int n), (override));
+  MOCK_METHOD(string, DoThat, (int x, const char* str1, const char* str2),
+              (override));
+};
+
+  ...
+  MockFoo foo;
+  EXPECT_CALL(foo, DoThis).WillOnce(ReturnSecondArgument());
+  EXPECT_CALL(foo, DoThat).WillOnce(ReturnSecondArgument());
+  ...
+  foo.DoThis(true, 5);  // Will return 5.
+  foo.DoThat(1, "Hi", "Bye");  // Will return "Hi".
+```
+
+### Teaching gMock How to Print Your Values
+
+When an uninteresting or unexpected call occurs, gMock prints the argument
+values and the stack trace to help you debug. Assertion macros like
+`EXPECT_THAT` and `EXPECT_EQ` also print the values in question when the
+assertion fails. gMock and googletest do this using googletest's user-extensible
+value printer.
+
+This printer knows how to print built-in C++ types, native arrays, STL
+containers, and any type that supports the `<<` operator. For other types, it
+prints the raw bytes in the value and hopes that you the user can figure it out.
+[googletest's advanced guide](../../googletest/docs/advanced.md#teaching-googletest-how-to-print-your-values)
+explains how to extend the printer to do a better job at printing your
+particular type than to dump the bytes.
+
+## Useful Mocks Created Using gMock
+
+<!--#include file="includes/g3_testing_LOGs.md"-->
+<!--#include file="includes/g3_mock_callbacks.md"-->
+
+### Mock std::function {#MockFunction}
+
+`std::function` is a general function type introduced in C++11. It is a
+preferred way of passing callbacks to new interfaces. Functions are copiable,
+and are not usually passed around by pointer, which makes them tricky to mock.
+But fear not - `MockFunction` can help you with that.
+
+`MockFunction<R(T1, ..., Tn)>` has a mock method `Call()` with the signature:
+
+```cpp
+  R Call(T1, ..., Tn);
+```
+
+It also has a `AsStdFunction()` method, which creates a `std::function` proxy
+forwarding to Call:
+
+```cpp
+  std::function<R(T1, ..., Tn)> AsStdFunction();
+```
+
+To use `MockFunction`, first create `MockFunction` object and set up
+expectations on its `Call` method. Then pass proxy obtained from
+`AsStdFunction()` to the code you are testing. For example:
+
+```cpp
+TEST(FooTest, RunsCallbackWithBarArgument) {
+  // 1. Create a mock object.
+  MockFunction<int(string)> mock_function;
+
+  // 2. Set expectations on Call() method.
+  EXPECT_CALL(mock_function, Call("bar")).WillOnce(Return(1));
+
+  // 3. Exercise code that uses std::function.
+  Foo(mock_function.AsStdFunction());
+  // Foo's signature can be either of:
+  // void Foo(const std::function<int(string)>& fun);
+  // void Foo(std::function<int(string)> fun);
+
+  // 4. All expectations will be verified when mock_function
+  //     goes out of scope and is destroyed.
+}
+```
+
+Remember that function objects created with `AsStdFunction()` are just
+forwarders. If you create multiple of them, they will share the same set of
+expectations.
+
+Although `std::function` supports unlimited number of arguments, `MockFunction`
+implementation is limited to ten. If you ever hit that limit... well, your
+callback has bigger problems than being mockable. :-)
+
+<!-- GOOGLETEST_CM0034 DO NOT DELETE -->
diff --git a/build/_deps/googletest-src/googlemock/docs/for_dummies.md b/build/_deps/googletest-src/googlemock/docs/for_dummies.md
new file mode 100644
index 0000000000000000000000000000000000000000..e11c18d9bf027a305f3813eaaaf437d2c7f2a9f9
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@@ -0,0 +1,700 @@
+## gMock for Dummies {#GMockForDummies}
+
+<!-- GOOGLETEST_CM0013 DO NOT DELETE -->
+
+### What Is gMock?
+
+When you write a prototype or test, often it's not feasible or wise to rely on
+real objects entirely. A **mock object** implements the same interface as a real
+object (so it can be used as one), but lets you specify at run time how it will
+be used and what it should do (which methods will be called? in which order? how
+many times? with what arguments? what will they return? etc).
+
+**Note:** It is easy to confuse the term *fake objects* with mock objects. Fakes
+and mocks actually mean very different things in the Test-Driven Development
+(TDD) community:
+
+*   **Fake** objects have working implementations, but usually take some
+    shortcut (perhaps to make the operations less expensive), which makes them
+    not suitable for production. An in-memory file system would be an example of
+    a fake.
+*   **Mocks** are objects pre-programmed with *expectations*, which form a
+    specification of the calls they are expected to receive.
+
+If all this seems too abstract for you, don't worry - the most important thing
+to remember is that a mock allows you to check the *interaction* between itself
+and code that uses it. The difference between fakes and mocks shall become much
+clearer once you start to use mocks.
+
+**gMock** is a library (sometimes we also call it a "framework" to make it sound
+cool) for creating mock classes and using them. It does to C++ what
+jMock/EasyMock does to Java (well, more or less).
+
+When using gMock,
+
+1.  first, you use some simple macros to describe the interface you want to
+    mock, and they will expand to the implementation of your mock class;
+2.  next, you create some mock objects and specify its expectations and behavior
+    using an intuitive syntax;
+3.  then you exercise code that uses the mock objects. gMock will catch any
+    violation to the expectations as soon as it arises.
+
+### Why gMock?
+
+While mock objects help you remove unnecessary dependencies in tests and make
+them fast and reliable, using mocks manually in C++ is *hard*:
+
+*   Someone has to implement the mocks. The job is usually tedious and
+    error-prone. No wonder people go great distance to avoid it.
+*   The quality of those manually written mocks is a bit, uh, unpredictable. You
+    may see some really polished ones, but you may also see some that were
+    hacked up in a hurry and have all sorts of ad hoc restrictions.
+*   The knowledge you gained from using one mock doesn't transfer to the next
+    one.
+
+In contrast, Java and Python programmers have some fine mock frameworks (jMock,
+EasyMock, [Mox](http://wtf/mox), etc), which automate the creation of mocks. As
+a result, mocking is a proven effective technique and widely adopted practice in
+those communities. Having the right tool absolutely makes the difference.
+
+gMock was built to help C++ programmers. It was inspired by jMock and EasyMock,
+but designed with C++'s specifics in mind. It is your friend if any of the
+following problems is bothering you:
+
+*   You are stuck with a sub-optimal design and wish you had done more
+    prototyping before it was too late, but prototyping in C++ is by no means
+    "rapid".
+*   Your tests are slow as they depend on too many libraries or use expensive
+    resources (e.g. a database).
+*   Your tests are brittle as some resources they use are unreliable (e.g. the
+    network).
+*   You want to test how your code handles a failure (e.g. a file checksum
+    error), but it's not easy to cause one.
+*   You need to make sure that your module interacts with other modules in the
+    right way, but it's hard to observe the interaction; therefore you resort to
+    observing the side effects at the end of the action, but it's awkward at
+    best.
+*   You want to "mock out" your dependencies, except that they don't have mock
+    implementations yet; and, frankly, you aren't thrilled by some of those
+    hand-written mocks.
+
+We encourage you to use gMock as
+
+*   a *design* tool, for it lets you experiment with your interface design early
+    and often. More iterations lead to better designs!
+*   a *testing* tool to cut your tests' outbound dependencies and probe the
+    interaction between your module and its collaborators.
+
+### Getting Started
+
+gMock is bundled with googletest.
+
+### A Case for Mock Turtles
+
+Let's look at an example. Suppose you are developing a graphics program that
+relies on a [LOGO](http://en.wikipedia.org/wiki/Logo_programming_language)-like
+API for drawing. How would you test that it does the right thing? Well, you can
+run it and compare the screen with a golden screen snapshot, but let's admit it:
+tests like this are expensive to run and fragile (What if you just upgraded to a
+shiny new graphics card that has better anti-aliasing? Suddenly you have to
+update all your golden images.). It would be too painful if all your tests are
+like this. Fortunately, you learned about
+[Dependency Injection](http://en.wikipedia.org/wiki/Dependency_injection) and know the right thing
+to do: instead of having your application talk to the system API directly, wrap
+the API in an interface (say, `Turtle`) and code to that interface:
+
+```cpp
+class Turtle {
+  ...
+  virtual ~Turtle() {};
+  virtual void PenUp() = 0;
+  virtual void PenDown() = 0;
+  virtual void Forward(int distance) = 0;
+  virtual void Turn(int degrees) = 0;
+  virtual void GoTo(int x, int y) = 0;
+  virtual int GetX() const = 0;
+  virtual int GetY() const = 0;
+};
+```
+
+(Note that the destructor of `Turtle` **must** be virtual, as is the case for
+**all** classes you intend to inherit from - otherwise the destructor of the
+derived class will not be called when you delete an object through a base
+pointer, and you'll get corrupted program states like memory leaks.)
+
+You can control whether the turtle's movement will leave a trace using `PenUp()`
+and `PenDown()`, and control its movement using `Forward()`, `Turn()`, and
+`GoTo()`. Finally, `GetX()` and `GetY()` tell you the current position of the
+turtle.
+
+Your program will normally use a real implementation of this interface. In
+tests, you can use a mock implementation instead. This allows you to easily
+check what drawing primitives your program is calling, with what arguments, and
+in which order. Tests written this way are much more robust (they won't break
+because your new machine does anti-aliasing differently), easier to read and
+maintain (the intent of a test is expressed in the code, not in some binary
+images), and run *much, much faster*.
+
+### Writing the Mock Class
+
+If you are lucky, the mocks you need to use have already been implemented by
+some nice people. If, however, you find yourself in the position to write a mock
+class, relax - gMock turns this task into a fun game! (Well, almost.)
+
+#### How to Define It
+
+Using the `Turtle` interface as example, here are the simple steps you need to
+follow:
+
+*   Derive a class `MockTurtle` from `Turtle`.
+*   Take a *virtual* function of `Turtle` (while it's possible to
+    [mock non-virtual methods using templates](cook_book.md#MockingNonVirtualMethods),
+    it's much more involved).
+*   In the `public:` section of the child class, write `MOCK_METHOD();`
+*   Now comes the fun part: you take the function signature, cut-and-paste it
+    into the macro, and add two commas - one between the return type and the
+    name, another between the name and the argument list.
+*   If you're mocking a const method, add a 4th parameter containing `(const)`
+    (the parentheses are required).
+*   Since you're overriding a virtual method, we suggest adding the `override`
+    keyword. For const methods the 4th parameter becomes `(const, override)`,
+    for non-const methods just `(override)`. This isn't mandatory.
+*   Repeat until all virtual functions you want to mock are done. (It goes
+    without saying that *all* pure virtual methods in your abstract class must
+    be either mocked or overridden.)
+
+After the process, you should have something like:
+
+```cpp
+#include "gmock/gmock.h"  // Brings in gMock.
+
+class MockTurtle : public Turtle {
+ public:
+  ...
+  MOCK_METHOD(void, PenUp, (), (override));
+  MOCK_METHOD(void, PenDown, (), (override));
+  MOCK_METHOD(void, Forward, (int distance), (override));
+  MOCK_METHOD(void, Turn, (int degrees), (override));
+  MOCK_METHOD(void, GoTo, (int x, int y), (override));
+  MOCK_METHOD(int, GetX, (), (const, override));
+  MOCK_METHOD(int, GetY, (), (const, override));
+};
+```
+
+You don't need to define these mock methods somewhere else - the `MOCK_METHOD`
+macro will generate the definitions for you. It's that simple!
+
+#### Where to Put It
+
+When you define a mock class, you need to decide where to put its definition.
+Some people put it in a `_test.cc`. This is fine when the interface being mocked
+(say, `Foo`) is owned by the same person or team. Otherwise, when the owner of
+`Foo` changes it, your test could break. (You can't really expect `Foo`'s
+maintainer to fix every test that uses `Foo`, can you?)
+
+So, the rule of thumb is: if you need to mock `Foo` and it's owned by others,
+define the mock class in `Foo`'s package (better, in a `testing` sub-package
+such that you can clearly separate production code and testing utilities), put
+it in a `.h` and a `cc_library`. Then everyone can reference them from their
+tests. If `Foo` ever changes, there is only one copy of `MockFoo` to change, and
+only tests that depend on the changed methods need to be fixed.
+
+Another way to do it: you can introduce a thin layer `FooAdaptor` on top of
+`Foo` and code to this new interface. Since you own `FooAdaptor`, you can absorb
+changes in `Foo` much more easily. While this is more work initially, carefully
+choosing the adaptor interface can make your code easier to write and more
+readable (a net win in the long run), as you can choose `FooAdaptor` to fit your
+specific domain much better than `Foo` does.
+
+<!-- GOOGLETEST_CM0029 DO NOT DELETE -->
+
+### Using Mocks in Tests
+
+Once you have a mock class, using it is easy. The typical work flow is:
+
+1.  Import the gMock names from the `testing` namespace such that you can use
+    them unqualified (You only have to do it once per file. Remember that
+    namespaces are a good idea.
+2.  Create some mock objects.
+3.  Specify your expectations on them (How many times will a method be called?
+    With what arguments? What should it do? etc.).
+4.  Exercise some code that uses the mocks; optionally, check the result using
+    googletest assertions. If a mock method is called more than expected or with
+    wrong arguments, you'll get an error immediately.
+5.  When a mock is destructed, gMock will automatically check whether all
+    expectations on it have been satisfied.
+
+Here's an example:
+
+```cpp
+#include "path/to/mock-turtle.h"
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+using ::testing::AtLeast;                         // #1
+
+TEST(PainterTest, CanDrawSomething) {
+  MockTurtle turtle;                              // #2
+  EXPECT_CALL(turtle, PenDown())                  // #3
+      .Times(AtLeast(1));
+
+  Painter painter(&turtle);                       // #4
+
+  EXPECT_TRUE(painter.DrawCircle(0, 0, 10));      // #5
+}
+```
+
+As you might have guessed, this test checks that `PenDown()` is called at least
+once. If the `painter` object didn't call this method, your test will fail with
+a message like this:
+
+```text
+path/to/my_test.cc:119: Failure
+Actual function call count doesn't match this expectation:
+Actually: never called;
+Expected: called at least once.
+Stack trace:
+...
+```
+
+**Tip 1:** If you run the test from an Emacs buffer, you can hit <Enter> on the
+line number to jump right to the failed expectation.
+
+**Tip 2:** If your mock objects are never deleted, the final verification won't
+happen. Therefore it's a good idea to turn on the heap checker in your tests
+when you allocate mocks on the heap. You get that automatically if you use the
+`gtest_main` library already.
+
+**Important note:** gMock requires expectations to be set **before** the mock
+functions are called, otherwise the behavior is **undefined**. In particular,
+you mustn't interleave `EXPECT_CALL()s` and calls to the mock functions.
+
+This means `EXPECT_CALL()` should be read as expecting that a call will occur
+*in the future*, not that a call has occurred. Why does gMock work like that?
+Well, specifying the expectation beforehand allows gMock to report a violation
+as soon as it rises, when the context (stack trace, etc) is still available.
+This makes debugging much easier.
+
+Admittedly, this test is contrived and doesn't do much. You can easily achieve
+the same effect without using gMock. However, as we shall reveal soon, gMock
+allows you to do *so much more* with the mocks.
+
+### Setting Expectations
+
+The key to using a mock object successfully is to set the *right expectations*
+on it. If you set the expectations too strict, your test will fail as the result
+of unrelated changes. If you set them too loose, bugs can slip through. You want
+to do it just right such that your test can catch exactly the kind of bugs you
+intend it to catch. gMock provides the necessary means for you to do it "just
+right."
+
+#### General Syntax
+
+In gMock we use the `EXPECT_CALL()` macro to set an expectation on a mock
+method. The general syntax is:
+
+```cpp
+EXPECT_CALL(mock_object, method(matchers))
+    .Times(cardinality)
+    .WillOnce(action)
+    .WillRepeatedly(action);
+```
+
+The macro has two arguments: first the mock object, and then the method and its
+arguments. Note that the two are separated by a comma (`,`), not a period (`.`).
+(Why using a comma? The answer is that it was necessary for technical reasons.)
+If the method is not overloaded, the macro can also be called without matchers:
+
+```cpp
+EXPECT_CALL(mock_object, non-overloaded-method)
+    .Times(cardinality)
+    .WillOnce(action)
+    .WillRepeatedly(action);
+```
+
+This syntax allows the test writer to specify "called with any arguments"
+without explicitly specifying the number or types of arguments. To avoid
+unintended ambiguity, this syntax may only be used for methods which are not
+overloaded
+
+Either form of the macro can be followed by some optional *clauses* that provide
+more information about the expectation. We'll discuss how each clause works in
+the coming sections.
+
+This syntax is designed to make an expectation read like English. For example,
+you can probably guess that
+
+```cpp
+using ::testing::Return;
+...
+EXPECT_CALL(turtle, GetX())
+    .Times(5)
+    .WillOnce(Return(100))
+    .WillOnce(Return(150))
+    .WillRepeatedly(Return(200));
+```
+
+says that the `turtle` object's `GetX()` method will be called five times, it
+will return 100 the first time, 150 the second time, and then 200 every time.
+Some people like to call this style of syntax a Domain-Specific Language (DSL).
+
+**Note:** Why do we use a macro to do this? Well it serves two purposes: first
+it makes expectations easily identifiable (either by `gsearch` or by a human
+reader), and second it allows gMock to include the source file location of a
+failed expectation in messages, making debugging easier.
+
+#### Matchers: What Arguments Do We Expect?
+
+When a mock function takes arguments, we may specify what arguments we are
+expecting, for example:
+
+```cpp
+// Expects the turtle to move forward by 100 units.
+EXPECT_CALL(turtle, Forward(100));
+```
+
+Oftentimes you do not want to be too specific. Remember that talk about tests
+being too rigid? Over specification leads to brittle tests and obscures the
+intent of tests. Therefore we encourage you to specify only what's necessary—no
+more, no less. If you aren't interested in the value of an argument, write `_`
+as the argument, which means "anything goes":
+
+```cpp
+using ::testing::_;
+...
+// Expects that the turtle jumps to somewhere on the x=50 line.
+EXPECT_CALL(turtle, GoTo(50, _));
+```
+
+`_` is an instance of what we call **matchers**. A matcher is like a predicate
+and can test whether an argument is what we'd expect. You can use a matcher
+inside `EXPECT_CALL()` wherever a function argument is expected. `_` is a
+convenient way of saying "any value".
+
+In the above examples, `100` and `50` are also matchers; implicitly, they are
+the same as `Eq(100)` and `Eq(50)`, which specify that the argument must be
+equal (using `operator==`) to the matcher argument. There are many
+[built-in matchers](#MatcherList) for common types (as well as
+[custom matchers](cook_book.md#NewMatchers)); for example:
+
+```cpp
+using ::testing::Ge;
+...
+// Expects the turtle moves forward by at least 100.
+EXPECT_CALL(turtle, Forward(Ge(100)));
+```
+
+If you don't care about *any* arguments, rather than specify `_` for each of
+them you may instead omit the parameter list:
+
+```cpp
+// Expects the turtle to move forward.
+EXPECT_CALL(turtle, Forward);
+// Expects the turtle to jump somewhere.
+EXPECT_CALL(turtle, GoTo);
+```
+
+This works for all non-overloaded methods; if a method is overloaded, you need
+to help gMock resolve which overload is expected by specifying the number of
+arguments and possibly also the
+[types of the arguments](cook_book.md#SelectOverload).
+
+#### Cardinalities: How Many Times Will It Be Called?
+
+The first clause we can specify following an `EXPECT_CALL()` is `Times()`. We
+call its argument a **cardinality** as it tells *how many times* the call should
+occur. It allows us to repeat an expectation many times without actually writing
+it as many times. More importantly, a cardinality can be "fuzzy", just like a
+matcher can be. This allows a user to express the intent of a test exactly.
+
+An interesting special case is when we say `Times(0)`. You may have guessed - it
+means that the function shouldn't be called with the given arguments at all, and
+gMock will report a googletest failure whenever the function is (wrongfully)
+called.
+
+We've seen `AtLeast(n)` as an example of fuzzy cardinalities earlier. For the
+list of built-in cardinalities you can use, see
+[here](cheat_sheet.md#CardinalityList).
+
+The `Times()` clause can be omitted. **If you omit `Times()`, gMock will infer
+the cardinality for you.** The rules are easy to remember:
+
+*   If **neither** `WillOnce()` **nor** `WillRepeatedly()` is in the
+    `EXPECT_CALL()`, the inferred cardinality is `Times(1)`.
+*   If there are *n* `WillOnce()`'s but **no** `WillRepeatedly()`, where *n* >=
+    1, the cardinality is `Times(n)`.
+*   If there are *n* `WillOnce()`'s and **one** `WillRepeatedly()`, where *n* >=
+    0, the cardinality is `Times(AtLeast(n))`.
+
+**Quick quiz:** what do you think will happen if a function is expected to be
+called twice but actually called four times?
+
+#### Actions: What Should It Do?
+
+Remember that a mock object doesn't really have a working implementation? We as
+users have to tell it what to do when a method is invoked. This is easy in
+gMock.
+
+First, if the return type of a mock function is a built-in type or a pointer,
+the function has a **default action** (a `void` function will just return, a
+`bool` function will return `false`, and other functions will return 0). In
+addition, in C++ 11 and above, a mock function whose return type is
+default-constructible (i.e. has a default constructor) has a default action of
+returning a default-constructed value. If you don't say anything, this behavior
+will be used.
+
+Second, if a mock function doesn't have a default action, or the default action
+doesn't suit you, you can specify the action to be taken each time the
+expectation matches using a series of `WillOnce()` clauses followed by an
+optional `WillRepeatedly()`. For example,
+
+```cpp
+using ::testing::Return;
+...
+EXPECT_CALL(turtle, GetX())
+     .WillOnce(Return(100))
+     .WillOnce(Return(200))
+     .WillOnce(Return(300));
+```
+
+says that `turtle.GetX()` will be called *exactly three times* (gMock inferred
+this from how many `WillOnce()` clauses we've written, since we didn't
+explicitly write `Times()`), and will return 100, 200, and 300 respectively.
+
+```cpp
+using ::testing::Return;
+...
+EXPECT_CALL(turtle, GetY())
+     .WillOnce(Return(100))
+     .WillOnce(Return(200))
+     .WillRepeatedly(Return(300));
+```
+
+says that `turtle.GetY()` will be called *at least twice* (gMock knows this as
+we've written two `WillOnce()` clauses and a `WillRepeatedly()` while having no
+explicit `Times()`), will return 100 and 200 respectively the first two times,
+and 300 from the third time on.
+
+Of course, if you explicitly write a `Times()`, gMock will not try to infer the
+cardinality itself. What if the number you specified is larger than there are
+`WillOnce()` clauses? Well, after all `WillOnce()`s are used up, gMock will do
+the *default* action for the function every time (unless, of course, you have a
+`WillRepeatedly()`.).
+
+What can we do inside `WillOnce()` besides `Return()`? You can return a
+reference using `ReturnRef(*variable*)`, or invoke a pre-defined function, among
+[others](cook_book.md#using-actions).
+
+**Important note:** The `EXPECT_CALL()` statement evaluates the action clause
+only once, even though the action may be performed many times. Therefore you
+must be careful about side effects. The following may not do what you want:
+
+```cpp
+using ::testing::Return;
+...
+int n = 100;
+EXPECT_CALL(turtle, GetX())
+    .Times(4)
+    .WillRepeatedly(Return(n++));
+```
+
+Instead of returning 100, 101, 102, ..., consecutively, this mock function will
+always return 100 as `n++` is only evaluated once. Similarly, `Return(new Foo)`
+will create a new `Foo` object when the `EXPECT_CALL()` is executed, and will
+return the same pointer every time. If you want the side effect to happen every
+time, you need to define a custom action, which we'll teach in the
+[cook book](http://<!-- GOOGLETEST_CM0012 DO NOT DELETE -->).
+
+Time for another quiz! What do you think the following means?
+
+```cpp
+using ::testing::Return;
+...
+EXPECT_CALL(turtle, GetY())
+    .Times(4)
+    .WillOnce(Return(100));
+```
+
+Obviously `turtle.GetY()` is expected to be called four times. But if you think
+it will return 100 every time, think twice! Remember that one `WillOnce()`
+clause will be consumed each time the function is invoked and the default action
+will be taken afterwards. So the right answer is that `turtle.GetY()` will
+return 100 the first time, but **return 0 from the second time on**, as
+returning 0 is the default action for `int` functions.
+
+#### Using Multiple Expectations {#MultiExpectations}
+
+So far we've only shown examples where you have a single expectation. More
+realistically, you'll specify expectations on multiple mock methods which may be
+from multiple mock objects.
+
+By default, when a mock method is invoked, gMock will search the expectations in
+the **reverse order** they are defined, and stop when an active expectation that
+matches the arguments is found (you can think of it as "newer rules override
+older ones."). If the matching expectation cannot take any more calls, you will
+get an upper-bound-violated failure. Here's an example:
+
+```cpp
+using ::testing::_;
+...
+EXPECT_CALL(turtle, Forward(_));  // #1
+EXPECT_CALL(turtle, Forward(10))  // #2
+    .Times(2);
+```
+
+If `Forward(10)` is called three times in a row, the third time it will be an
+error, as the last matching expectation (#2) has been saturated. If, however,
+the third `Forward(10)` call is replaced by `Forward(20)`, then it would be OK,
+as now #1 will be the matching expectation.
+
+**Note:** Why does gMock search for a match in the *reverse* order of the
+expectations? The reason is that this allows a user to set up the default
+expectations in a mock object's constructor or the test fixture's set-up phase
+and then customize the mock by writing more specific expectations in the test
+body. So, if you have two expectations on the same method, you want to put the
+one with more specific matchers **after** the other, or the more specific rule
+would be shadowed by the more general one that comes after it.
+
+**Tip:** It is very common to start with a catch-all expectation for a method
+and `Times(AnyNumber())` (omitting arguments, or with `_` for all arguments, if
+overloaded). This makes any calls to the method expected. This is not necessary
+for methods that are not mentioned at all (these are "uninteresting"), but is
+useful for methods that have some expectations, but for which other calls are
+ok. See
+[Understanding Uninteresting vs Unexpected Calls](cook_book.md#uninteresting-vs-unexpected).
+
+#### Ordered vs Unordered Calls {#OrderedCalls}
+
+By default, an expectation can match a call even though an earlier expectation
+hasn't been satisfied. In other words, the calls don't have to occur in the
+order the expectations are specified.
+
+Sometimes, you may want all the expected calls to occur in a strict order. To
+say this in gMock is easy:
+
+```cpp
+using ::testing::InSequence;
+...
+TEST(FooTest, DrawsLineSegment) {
+  ...
+  {
+    InSequence seq;
+
+    EXPECT_CALL(turtle, PenDown());
+    EXPECT_CALL(turtle, Forward(100));
+    EXPECT_CALL(turtle, PenUp());
+  }
+  Foo();
+}
+```
+
+By creating an object of type `InSequence`, all expectations in its scope are
+put into a *sequence* and have to occur *sequentially*. Since we are just
+relying on the constructor and destructor of this object to do the actual work,
+its name is really irrelevant.
+
+In this example, we test that `Foo()` calls the three expected functions in the
+order as written. If a call is made out-of-order, it will be an error.
+
+(What if you care about the relative order of some of the calls, but not all of
+them? Can you specify an arbitrary partial order? The answer is ... yes! The
+details can be found [here](cook_book.md#OrderedCalls).)
+
+#### All Expectations Are Sticky (Unless Said Otherwise) {#StickyExpectations}
+
+Now let's do a quick quiz to see how well you can use this mock stuff already.
+How would you test that the turtle is asked to go to the origin *exactly twice*
+(you want to ignore any other instructions it receives)?
+
+After you've come up with your answer, take a look at ours and compare notes
+(solve it yourself first - don't cheat!):
+
+```cpp
+using ::testing::_;
+using ::testing::AnyNumber;
+...
+EXPECT_CALL(turtle, GoTo(_, _))  // #1
+     .Times(AnyNumber());
+EXPECT_CALL(turtle, GoTo(0, 0))  // #2
+     .Times(2);
+```
+
+Suppose `turtle.GoTo(0, 0)` is called three times. In the third time, gMock will
+see that the arguments match expectation #2 (remember that we always pick the
+last matching expectation). Now, since we said that there should be only two
+such calls, gMock will report an error immediately. This is basically what we've
+told you in the [Using Multiple Expectations](#MultiExpectations) section above.
+
+This example shows that **expectations in gMock are "sticky" by default**, in
+the sense that they remain active even after we have reached their invocation
+upper bounds. This is an important rule to remember, as it affects the meaning
+of the spec, and is **different** to how it's done in many other mocking
+frameworks (Why'd we do that? Because we think our rule makes the common cases
+easier to express and understand.).
+
+Simple? Let's see if you've really understood it: what does the following code
+say?
+
+```cpp
+using ::testing::Return;
+...
+for (int i = n; i > 0; i--) {
+  EXPECT_CALL(turtle, GetX())
+      .WillOnce(Return(10*i));
+}
+```
+
+If you think it says that `turtle.GetX()` will be called `n` times and will
+return 10, 20, 30, ..., consecutively, think twice! The problem is that, as we
+said, expectations are sticky. So, the second time `turtle.GetX()` is called,
+the last (latest) `EXPECT_CALL()` statement will match, and will immediately
+lead to an "upper bound violated" error - this piece of code is not very useful!
+
+One correct way of saying that `turtle.GetX()` will return 10, 20, 30, ..., is
+to explicitly say that the expectations are *not* sticky. In other words, they
+should *retire* as soon as they are saturated:
+
+```cpp
+using ::testing::Return;
+...
+for (int i = n; i > 0; i--) {
+  EXPECT_CALL(turtle, GetX())
+      .WillOnce(Return(10*i))
+      .RetiresOnSaturation();
+}
+```
+
+And, there's a better way to do it: in this case, we expect the calls to occur
+in a specific order, and we line up the actions to match the order. Since the
+order is important here, we should make it explicit using a sequence:
+
+```cpp
+using ::testing::InSequence;
+using ::testing::Return;
+...
+{
+  InSequence s;
+
+  for (int i = 1; i <= n; i++) {
+    EXPECT_CALL(turtle, GetX())
+        .WillOnce(Return(10*i))
+        .RetiresOnSaturation();
+  }
+}
+```
+
+By the way, the other situation where an expectation may *not* be sticky is when
+it's in a sequence - as soon as another expectation that comes after it in the
+sequence has been used, it automatically retires (and will never be used to
+match any call).
+
+#### Uninteresting Calls
+
+A mock object may have many methods, and not all of them are that interesting.
+For example, in some tests we may not care about how many times `GetX()` and
+`GetY()` get called.
+
+In gMock, if you are not interested in a method, just don't say anything about
+it. If a call to this method occurs, you'll see a warning in the test output,
+but it won't be a failure. This is called "naggy" behavior; to change, see
+[The Nice, the Strict, and the Naggy](cook_book.md#NiceStrictNaggy).
diff --git a/build/_deps/googletest-src/googlemock/docs/gmock_faq.md b/build/_deps/googletest-src/googlemock/docs/gmock_faq.md
new file mode 100644
index 0000000000000000000000000000000000000000..214aabf1218af9cc7ee5c3d37e7e58516aefb116
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/docs/gmock_faq.md
@@ -0,0 +1,396 @@
+## Legacy gMock FAQ {#GMockFaq}
+
+<!-- GOOGLETEST_CM0021 DO NOT DELETE -->
+
+### When I call a method on my mock object, the method for the real object is invoked instead. What's the problem?
+
+In order for a method to be mocked, it must be *virtual*, unless you use the
+[high-perf dependency injection technique](#MockingNonVirtualMethods).
+
+### Can I mock a variadic function?
+
+You cannot mock a variadic function (i.e. a function taking ellipsis (`...`)
+arguments) directly in gMock.
+
+The problem is that in general, there is *no way* for a mock object to know how
+many arguments are passed to the variadic method, and what the arguments' types
+are. Only the *author of the base class* knows the protocol, and we cannot look
+into his or her head.
+
+Therefore, to mock such a function, the *user* must teach the mock object how to
+figure out the number of arguments and their types. One way to do it is to
+provide overloaded versions of the function.
+
+Ellipsis arguments are inherited from C and not really a C++ feature. They are
+unsafe to use and don't work with arguments that have constructors or
+destructors. Therefore we recommend to avoid them in C++ as much as possible.
+
+### MSVC gives me warning C4301 or C4373 when I define a mock method with a const parameter. Why?
+
+If you compile this using Microsoft Visual C++ 2005 SP1:
+
+```cpp
+class Foo {
+  ...
+  virtual void Bar(const int i) = 0;
+};
+
+class MockFoo : public Foo {
+  ...
+  MOCK_METHOD(void, Bar, (const int i), (override));
+};
+```
+
+You may get the following warning:
+
+```shell
+warning C4301: 'MockFoo::Bar': overriding virtual function only differs from 'Foo::Bar' by const/volatile qualifier
+```
+
+This is a MSVC bug. The same code compiles fine with gcc, for example. If you
+use Visual C++ 2008 SP1, you would get the warning:
+
+```shell
+warning C4373: 'MockFoo::Bar': virtual function overrides 'Foo::Bar', previous versions of the compiler did not override when parameters only differed by const/volatile qualifiers
+```
+
+In C++, if you *declare* a function with a `const` parameter, the `const`
+modifier is ignored. Therefore, the `Foo` base class above is equivalent to:
+
+```cpp
+class Foo {
+  ...
+  virtual void Bar(int i) = 0;  // int or const int?  Makes no difference.
+};
+```
+
+In fact, you can *declare* `Bar()` with an `int` parameter, and define it with a
+`const int` parameter. The compiler will still match them up.
+
+Since making a parameter `const` is meaningless in the method declaration, we
+recommend to remove it in both `Foo` and `MockFoo`. That should workaround the
+VC bug.
+
+Note that we are talking about the *top-level* `const` modifier here. If the
+function parameter is passed by pointer or reference, declaring the pointee or
+referee as `const` is still meaningful. For example, the following two
+declarations are *not* equivalent:
+
+```cpp
+void Bar(int* p);         // Neither p nor *p is const.
+void Bar(const int* p);  // p is not const, but *p is.
+```
+
+<!-- GOOGLETEST_CM0030 DO NOT DELETE -->
+
+### I can't figure out why gMock thinks my expectations are not satisfied. What should I do?
+
+You might want to run your test with `--gmock_verbose=info`. This flag lets
+gMock print a trace of every mock function call it receives. By studying the
+trace, you'll gain insights on why the expectations you set are not met.
+
+If you see the message "The mock function has no default action set, and its
+return type has no default value set.", then try
+[adding a default action](for_dummies.md#DefaultValue). Due to a known issue,
+unexpected calls on mocks without default actions don't print out a detailed
+comparison between the actual arguments and the expected arguments.
+
+### My program crashed and `ScopedMockLog` spit out tons of messages. Is it a gMock bug?
+
+gMock and `ScopedMockLog` are likely doing the right thing here.
+
+When a test crashes, the failure signal handler will try to log a lot of
+information (the stack trace, and the address map, for example). The messages
+are compounded if you have many threads with depth stacks. When `ScopedMockLog`
+intercepts these messages and finds that they don't match any expectations, it
+prints an error for each of them.
+
+You can learn to ignore the errors, or you can rewrite your expectations to make
+your test more robust, for example, by adding something like:
+
+```cpp
+using ::testing::AnyNumber;
+using ::testing::Not;
+...
+  // Ignores any log not done by us.
+  EXPECT_CALL(log, Log(_, Not(EndsWith("/my_file.cc")), _))
+      .Times(AnyNumber());
+```
+
+### How can I assert that a function is NEVER called?
+
+```cpp
+using ::testing::_;
+...
+  EXPECT_CALL(foo, Bar(_))
+      .Times(0);
+```
+
+<!-- GOOGLETEST_CM0031 DO NOT DELETE -->
+
+### I have a failed test where gMock tells me TWICE that a particular expectation is not satisfied. Isn't this redundant?
+
+When gMock detects a failure, it prints relevant information (the mock function
+arguments, the state of relevant expectations, and etc) to help the user debug.
+If another failure is detected, gMock will do the same, including printing the
+state of relevant expectations.
+
+Sometimes an expectation's state didn't change between two failures, and you'll
+see the same description of the state twice. They are however *not* redundant,
+as they refer to *different points in time*. The fact they are the same *is*
+interesting information.
+
+### I get a heapcheck failure when using a mock object, but using a real object is fine. What can be wrong?
+
+Does the class (hopefully a pure interface) you are mocking have a virtual
+destructor?
+
+Whenever you derive from a base class, make sure its destructor is virtual.
+Otherwise Bad Things will happen. Consider the following code:
+
+```cpp
+class Base {
+ public:
+  // Not virtual, but should be.
+  ~Base() { ... }
+  ...
+};
+
+class Derived : public Base {
+ public:
+  ...
+ private:
+  std::string value_;
+};
+
+...
+  Base* p = new Derived;
+  ...
+  delete p;  // Surprise! ~Base() will be called, but ~Derived() will not
+                 // - value_ is leaked.
+```
+
+By changing `~Base()` to virtual, `~Derived()` will be correctly called when
+`delete p` is executed, and the heap checker will be happy.
+
+### The "newer expectations override older ones" rule makes writing expectations awkward. Why does gMock do that?
+
+When people complain about this, often they are referring to code like:
+
+```cpp
+using ::testing::Return;
+...
+  // foo.Bar() should be called twice, return 1 the first time, and return
+  // 2 the second time.  However, I have to write the expectations in the
+  // reverse order.  This sucks big time!!!
+  EXPECT_CALL(foo, Bar())
+      .WillOnce(Return(2))
+      .RetiresOnSaturation();
+  EXPECT_CALL(foo, Bar())
+      .WillOnce(Return(1))
+      .RetiresOnSaturation();
+```
+
+The problem, is that they didn't pick the **best** way to express the test's
+intent.
+
+By default, expectations don't have to be matched in *any* particular order. If
+you want them to match in a certain order, you need to be explicit. This is
+gMock's (and jMock's) fundamental philosophy: it's easy to accidentally
+over-specify your tests, and we want to make it harder to do so.
+
+There are two better ways to write the test spec. You could either put the
+expectations in sequence:
+
+```cpp
+using ::testing::Return;
+...
+  // foo.Bar() should be called twice, return 1 the first time, and return
+  // 2 the second time.  Using a sequence, we can write the expectations
+  // in their natural order.
+  {
+    InSequence s;
+    EXPECT_CALL(foo, Bar())
+        .WillOnce(Return(1))
+        .RetiresOnSaturation();
+    EXPECT_CALL(foo, Bar())
+        .WillOnce(Return(2))
+        .RetiresOnSaturation();
+  }
+```
+
+or you can put the sequence of actions in the same expectation:
+
+```cpp
+using ::testing::Return;
+...
+  // foo.Bar() should be called twice, return 1 the first time, and return
+  // 2 the second time.
+  EXPECT_CALL(foo, Bar())
+      .WillOnce(Return(1))
+      .WillOnce(Return(2))
+      .RetiresOnSaturation();
+```
+
+Back to the original questions: why does gMock search the expectations (and
+`ON_CALL`s) from back to front? Because this allows a user to set up a mock's
+behavior for the common case early (e.g. in the mock's constructor or the test
+fixture's set-up phase) and customize it with more specific rules later. If
+gMock searches from front to back, this very useful pattern won't be possible.
+
+### gMock prints a warning when a function without EXPECT_CALL is called, even if I have set its behavior using ON_CALL. Would it be reasonable not to show the warning in this case?
+
+When choosing between being neat and being safe, we lean toward the latter. So
+the answer is that we think it's better to show the warning.
+
+Often people write `ON_CALL`s in the mock object's constructor or `SetUp()`, as
+the default behavior rarely changes from test to test. Then in the test body
+they set the expectations, which are often different for each test. Having an
+`ON_CALL` in the set-up part of a test doesn't mean that the calls are expected.
+If there's no `EXPECT_CALL` and the method is called, it's possibly an error. If
+we quietly let the call go through without notifying the user, bugs may creep in
+unnoticed.
+
+If, however, you are sure that the calls are OK, you can write
+
+```cpp
+using ::testing::_;
+...
+  EXPECT_CALL(foo, Bar(_))
+      .WillRepeatedly(...);
+```
+
+instead of
+
+```cpp
+using ::testing::_;
+...
+  ON_CALL(foo, Bar(_))
+      .WillByDefault(...);
+```
+
+This tells gMock that you do expect the calls and no warning should be printed.
+
+Also, you can control the verbosity by specifying `--gmock_verbose=error`. Other
+values are `info` and `warning`. If you find the output too noisy when
+debugging, just choose a less verbose level.
+
+### How can I delete the mock function's argument in an action?
+
+If your mock function takes a pointer argument and you want to delete that
+argument, you can use testing::DeleteArg<N>() to delete the N'th (zero-indexed)
+argument:
+
+```cpp
+using ::testing::_;
+  ...
+  MOCK_METHOD(void, Bar, (X* x, const Y& y));
+  ...
+  EXPECT_CALL(mock_foo_, Bar(_, _))
+      .WillOnce(testing::DeleteArg<0>()));
+```
+
+### How can I perform an arbitrary action on a mock function's argument?
+
+If you find yourself needing to perform some action that's not supported by
+gMock directly, remember that you can define your own actions using
+[`MakeAction()`](#NewMonoActions) or
+[`MakePolymorphicAction()`](#NewPolyActions), or you can write a stub function
+and invoke it using [`Invoke()`](#FunctionsAsActions).
+
+```cpp
+using ::testing::_;
+using ::testing::Invoke;
+  ...
+  MOCK_METHOD(void, Bar, (X* p));
+  ...
+  EXPECT_CALL(mock_foo_, Bar(_))
+      .WillOnce(Invoke(MyAction(...)));
+```
+
+### My code calls a static/global function. Can I mock it?
+
+You can, but you need to make some changes.
+
+In general, if you find yourself needing to mock a static function, it's a sign
+that your modules are too tightly coupled (and less flexible, less reusable,
+less testable, etc). You are probably better off defining a small interface and
+call the function through that interface, which then can be easily mocked. It's
+a bit of work initially, but usually pays for itself quickly.
+
+This Google Testing Blog
+[post](https://testing.googleblog.com/2008/06/defeat-static-cling.html) says it
+excellently. Check it out.
+
+### My mock object needs to do complex stuff. It's a lot of pain to specify the actions. gMock sucks!
+
+I know it's not a question, but you get an answer for free any way. :-)
+
+With gMock, you can create mocks in C++ easily. And people might be tempted to
+use them everywhere. Sometimes they work great, and sometimes you may find them,
+well, a pain to use. So, what's wrong in the latter case?
+
+When you write a test without using mocks, you exercise the code and assert that
+it returns the correct value or that the system is in an expected state. This is
+sometimes called "state-based testing".
+
+Mocks are great for what some call "interaction-based" testing: instead of
+checking the system state at the very end, mock objects verify that they are
+invoked the right way and report an error as soon as it arises, giving you a
+handle on the precise context in which the error was triggered. This is often
+more effective and economical to do than state-based testing.
+
+If you are doing state-based testing and using a test double just to simulate
+the real object, you are probably better off using a fake. Using a mock in this
+case causes pain, as it's not a strong point for mocks to perform complex
+actions. If you experience this and think that mocks suck, you are just not
+using the right tool for your problem. Or, you might be trying to solve the
+wrong problem. :-)
+
+### I got a warning "Uninteresting function call encountered - default action taken.." Should I panic?
+
+By all means, NO! It's just an FYI. :-)
+
+What it means is that you have a mock function, you haven't set any expectations
+on it (by gMock's rule this means that you are not interested in calls to this
+function and therefore it can be called any number of times), and it is called.
+That's OK - you didn't say it's not OK to call the function!
+
+What if you actually meant to disallow this function to be called, but forgot to
+write `EXPECT_CALL(foo, Bar()).Times(0)`? While one can argue that it's the
+user's fault, gMock tries to be nice and prints you a note.
+
+So, when you see the message and believe that there shouldn't be any
+uninteresting calls, you should investigate what's going on. To make your life
+easier, gMock dumps the stack trace when an uninteresting call is encountered.
+From that you can figure out which mock function it is, and how it is called.
+
+### I want to define a custom action. Should I use Invoke() or implement the ActionInterface interface?
+
+Either way is fine - you want to choose the one that's more convenient for your
+circumstance.
+
+Usually, if your action is for a particular function type, defining it using
+`Invoke()` should be easier; if your action can be used in functions of
+different types (e.g. if you are defining `Return(*value*)`),
+`MakePolymorphicAction()` is easiest. Sometimes you want precise control on what
+types of functions the action can be used in, and implementing `ActionInterface`
+is the way to go here. See the implementation of `Return()` in
+`testing/base/public/gmock-actions.h` for an example.
+
+### I use SetArgPointee() in WillOnce(), but gcc complains about "conflicting return type specified". What does it mean?
+
+You got this error as gMock has no idea what value it should return when the
+mock method is called. `SetArgPointee()` says what the side effect is, but
+doesn't say what the return value should be. You need `DoAll()` to chain a
+`SetArgPointee()` with a `Return()` that provides a value appropriate to the API
+being mocked.
+
+See this [recipe](cook_book.md#mocking-side-effects) for more details and an
+example.
+
+### I have a huge mock class, and Microsoft Visual C++ runs out of memory when compiling it. What can I do?
+
+We've noticed that when the `/clr` compiler flag is used, Visual C++ uses 5~6
+times as much memory when compiling a mock class. We suggest to avoid `/clr`
+when compiling native C++ mocks.
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-actions.h b/build/_deps/googletest-src/googlemock/include/gmock/gmock-actions.h
new file mode 100644
index 0000000000000000000000000000000000000000..f12d39be06a7697aec8180ab59ed3ec7f8800ee5
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-actions.h
@@ -0,0 +1,1142 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements some commonly used actions.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_ACTIONS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_ACTIONS_H_
+
+#ifndef _WIN32_WCE
+# include <errno.h>
+#endif
+
+#include <algorithm>
+#include <functional>
+#include <memory>
+#include <string>
+#include <type_traits>
+#include <utility>
+
+#include "gmock/internal/gmock-internal-utils.h"
+#include "gmock/internal/gmock-port.h"
+
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
+#endif
+
+namespace testing {
+
+// To implement an action Foo, define:
+//   1. a class FooAction that implements the ActionInterface interface, and
+//   2. a factory function that creates an Action object from a
+//      const FooAction*.
+//
+// The two-level delegation design follows that of Matcher, providing
+// consistency for extension developers.  It also eases ownership
+// management as Action objects can now be copied like plain values.
+
+namespace internal {
+
+// BuiltInDefaultValueGetter<T, true>::Get() returns a
+// default-constructed T value.  BuiltInDefaultValueGetter<T,
+// false>::Get() crashes with an error.
+//
+// This primary template is used when kDefaultConstructible is true.
+template <typename T, bool kDefaultConstructible>
+struct BuiltInDefaultValueGetter {
+  static T Get() { return T(); }
+};
+template <typename T>
+struct BuiltInDefaultValueGetter<T, false> {
+  static T Get() {
+    Assert(false, __FILE__, __LINE__,
+           "Default action undefined for the function return type.");
+    return internal::Invalid<T>();
+    // The above statement will never be reached, but is required in
+    // order for this function to compile.
+  }
+};
+
+// BuiltInDefaultValue<T>::Get() returns the "built-in" default value
+// for type T, which is NULL when T is a raw pointer type, 0 when T is
+// a numeric type, false when T is bool, or "" when T is string or
+// std::string.  In addition, in C++11 and above, it turns a
+// default-constructed T value if T is default constructible.  For any
+// other type T, the built-in default T value is undefined, and the
+// function will abort the process.
+template <typename T>
+class BuiltInDefaultValue {
+ public:
+  // This function returns true if and only if type T has a built-in default
+  // value.
+  static bool Exists() {
+    return ::std::is_default_constructible<T>::value;
+  }
+
+  static T Get() {
+    return BuiltInDefaultValueGetter<
+        T, ::std::is_default_constructible<T>::value>::Get();
+  }
+};
+
+// This partial specialization says that we use the same built-in
+// default value for T and const T.
+template <typename T>
+class BuiltInDefaultValue<const T> {
+ public:
+  static bool Exists() { return BuiltInDefaultValue<T>::Exists(); }
+  static T Get() { return BuiltInDefaultValue<T>::Get(); }
+};
+
+// This partial specialization defines the default values for pointer
+// types.
+template <typename T>
+class BuiltInDefaultValue<T*> {
+ public:
+  static bool Exists() { return true; }
+  static T* Get() { return nullptr; }
+};
+
+// The following specializations define the default values for
+// specific types we care about.
+#define GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(type, value) \
+  template <> \
+  class BuiltInDefaultValue<type> { \
+   public: \
+    static bool Exists() { return true; } \
+    static type Get() { return value; } \
+  }
+
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(void, );  // NOLINT
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(::std::string, "");
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(bool, false);
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned char, '\0');
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed char, '\0');
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(char, '\0');
+
+// There's no need for a default action for signed wchar_t, as that
+// type is the same as wchar_t for gcc, and invalid for MSVC.
+//
+// There's also no need for a default action for unsigned wchar_t, as
+// that type is the same as unsigned int for gcc, and invalid for
+// MSVC.
+#if GMOCK_WCHAR_T_IS_NATIVE_
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(wchar_t, 0U);  // NOLINT
+#endif
+
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned short, 0U);  // NOLINT
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed short, 0);     // NOLINT
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned int, 0U);
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed int, 0);
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned long, 0UL);  // NOLINT
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed long, 0L);     // NOLINT
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(UInt64, 0);
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(Int64, 0);
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(float, 0);
+GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(double, 0);
+
+#undef GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_
+
+}  // namespace internal
+
+// When an unexpected function call is encountered, Google Mock will
+// let it return a default value if the user has specified one for its
+// return type, or if the return type has a built-in default value;
+// otherwise Google Mock won't know what value to return and will have
+// to abort the process.
+//
+// The DefaultValue<T> class allows a user to specify the
+// default value for a type T that is both copyable and publicly
+// destructible (i.e. anything that can be used as a function return
+// type).  The usage is:
+//
+//   // Sets the default value for type T to be foo.
+//   DefaultValue<T>::Set(foo);
+template <typename T>
+class DefaultValue {
+ public:
+  // Sets the default value for type T; requires T to be
+  // copy-constructable and have a public destructor.
+  static void Set(T x) {
+    delete producer_;
+    producer_ = new FixedValueProducer(x);
+  }
+
+  // Provides a factory function to be called to generate the default value.
+  // This method can be used even if T is only move-constructible, but it is not
+  // limited to that case.
+  typedef T (*FactoryFunction)();
+  static void SetFactory(FactoryFunction factory) {
+    delete producer_;
+    producer_ = new FactoryValueProducer(factory);
+  }
+
+  // Unsets the default value for type T.
+  static void Clear() {
+    delete producer_;
+    producer_ = nullptr;
+  }
+
+  // Returns true if and only if the user has set the default value for type T.
+  static bool IsSet() { return producer_ != nullptr; }
+
+  // Returns true if T has a default return value set by the user or there
+  // exists a built-in default value.
+  static bool Exists() {
+    return IsSet() || internal::BuiltInDefaultValue<T>::Exists();
+  }
+
+  // Returns the default value for type T if the user has set one;
+  // otherwise returns the built-in default value. Requires that Exists()
+  // is true, which ensures that the return value is well-defined.
+  static T Get() {
+    return producer_ == nullptr ? internal::BuiltInDefaultValue<T>::Get()
+                                : producer_->Produce();
+  }
+
+ private:
+  class ValueProducer {
+   public:
+    virtual ~ValueProducer() {}
+    virtual T Produce() = 0;
+  };
+
+  class FixedValueProducer : public ValueProducer {
+   public:
+    explicit FixedValueProducer(T value) : value_(value) {}
+    T Produce() override { return value_; }
+
+   private:
+    const T value_;
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(FixedValueProducer);
+  };
+
+  class FactoryValueProducer : public ValueProducer {
+   public:
+    explicit FactoryValueProducer(FactoryFunction factory)
+        : factory_(factory) {}
+    T Produce() override { return factory_(); }
+
+   private:
+    const FactoryFunction factory_;
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(FactoryValueProducer);
+  };
+
+  static ValueProducer* producer_;
+};
+
+// This partial specialization allows a user to set default values for
+// reference types.
+template <typename T>
+class DefaultValue<T&> {
+ public:
+  // Sets the default value for type T&.
+  static void Set(T& x) {  // NOLINT
+    address_ = &x;
+  }
+
+  // Unsets the default value for type T&.
+  static void Clear() { address_ = nullptr; }
+
+  // Returns true if and only if the user has set the default value for type T&.
+  static bool IsSet() { return address_ != nullptr; }
+
+  // Returns true if T has a default return value set by the user or there
+  // exists a built-in default value.
+  static bool Exists() {
+    return IsSet() || internal::BuiltInDefaultValue<T&>::Exists();
+  }
+
+  // Returns the default value for type T& if the user has set one;
+  // otherwise returns the built-in default value if there is one;
+  // otherwise aborts the process.
+  static T& Get() {
+    return address_ == nullptr ? internal::BuiltInDefaultValue<T&>::Get()
+                               : *address_;
+  }
+
+ private:
+  static T* address_;
+};
+
+// This specialization allows DefaultValue<void>::Get() to
+// compile.
+template <>
+class DefaultValue<void> {
+ public:
+  static bool Exists() { return true; }
+  static void Get() {}
+};
+
+// Points to the user-set default value for type T.
+template <typename T>
+typename DefaultValue<T>::ValueProducer* DefaultValue<T>::producer_ = nullptr;
+
+// Points to the user-set default value for type T&.
+template <typename T>
+T* DefaultValue<T&>::address_ = nullptr;
+
+// Implement this interface to define an action for function type F.
+template <typename F>
+class ActionInterface {
+ public:
+  typedef typename internal::Function<F>::Result Result;
+  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
+
+  ActionInterface() {}
+  virtual ~ActionInterface() {}
+
+  // Performs the action.  This method is not const, as in general an
+  // action can have side effects and be stateful.  For example, a
+  // get-the-next-element-from-the-collection action will need to
+  // remember the current element.
+  virtual Result Perform(const ArgumentTuple& args) = 0;
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ActionInterface);
+};
+
+// An Action<F> is a copyable and IMMUTABLE (except by assignment)
+// object that represents an action to be taken when a mock function
+// of type F is called.  The implementation of Action<T> is just a
+// std::shared_ptr to const ActionInterface<T>. Don't inherit from Action!
+// You can view an object implementing ActionInterface<F> as a
+// concrete action (including its current state), and an Action<F>
+// object as a handle to it.
+template <typename F>
+class Action {
+  // Adapter class to allow constructing Action from a legacy ActionInterface.
+  // New code should create Actions from functors instead.
+  struct ActionAdapter {
+    // Adapter must be copyable to satisfy std::function requirements.
+    ::std::shared_ptr<ActionInterface<F>> impl_;
+
+    template <typename... Args>
+    typename internal::Function<F>::Result operator()(Args&&... args) {
+      return impl_->Perform(
+          ::std::forward_as_tuple(::std::forward<Args>(args)...));
+    }
+  };
+
+ public:
+  typedef typename internal::Function<F>::Result Result;
+  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
+
+  // Constructs a null Action.  Needed for storing Action objects in
+  // STL containers.
+  Action() {}
+
+  // Construct an Action from a specified callable.
+  // This cannot take std::function directly, because then Action would not be
+  // directly constructible from lambda (it would require two conversions).
+  template <typename G,
+            typename = typename ::std::enable_if<
+                ::std::is_constructible<::std::function<F>, G>::value>::type>
+  Action(G&& fun) : fun_(::std::forward<G>(fun)) {}  // NOLINT
+
+  // Constructs an Action from its implementation.
+  explicit Action(ActionInterface<F>* impl)
+      : fun_(ActionAdapter{::std::shared_ptr<ActionInterface<F>>(impl)}) {}
+
+  // This constructor allows us to turn an Action<Func> object into an
+  // Action<F>, as long as F's arguments can be implicitly converted
+  // to Func's and Func's return type can be implicitly converted to F's.
+  template <typename Func>
+  explicit Action(const Action<Func>& action) : fun_(action.fun_) {}
+
+  // Returns true if and only if this is the DoDefault() action.
+  bool IsDoDefault() const { return fun_ == nullptr; }
+
+  // Performs the action.  Note that this method is const even though
+  // the corresponding method in ActionInterface is not.  The reason
+  // is that a const Action<F> means that it cannot be re-bound to
+  // another concrete action, not that the concrete action it binds to
+  // cannot change state.  (Think of the difference between a const
+  // pointer and a pointer to const.)
+  Result Perform(ArgumentTuple args) const {
+    if (IsDoDefault()) {
+      internal::IllegalDoDefault(__FILE__, __LINE__);
+    }
+    return internal::Apply(fun_, ::std::move(args));
+  }
+
+ private:
+  template <typename G>
+  friend class Action;
+
+  // fun_ is an empty function if and only if this is the DoDefault() action.
+  ::std::function<F> fun_;
+};
+
+// The PolymorphicAction class template makes it easy to implement a
+// polymorphic action (i.e. an action that can be used in mock
+// functions of than one type, e.g. Return()).
+//
+// To define a polymorphic action, a user first provides a COPYABLE
+// implementation class that has a Perform() method template:
+//
+//   class FooAction {
+//    public:
+//     template <typename Result, typename ArgumentTuple>
+//     Result Perform(const ArgumentTuple& args) const {
+//       // Processes the arguments and returns a result, using
+//       // std::get<N>(args) to get the N-th (0-based) argument in the tuple.
+//     }
+//     ...
+//   };
+//
+// Then the user creates the polymorphic action using
+// MakePolymorphicAction(object) where object has type FooAction.  See
+// the definition of Return(void) and SetArgumentPointee<N>(value) for
+// complete examples.
+template <typename Impl>
+class PolymorphicAction {
+ public:
+  explicit PolymorphicAction(const Impl& impl) : impl_(impl) {}
+
+  template <typename F>
+  operator Action<F>() const {
+    return Action<F>(new MonomorphicImpl<F>(impl_));
+  }
+
+ private:
+  template <typename F>
+  class MonomorphicImpl : public ActionInterface<F> {
+   public:
+    typedef typename internal::Function<F>::Result Result;
+    typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
+
+    explicit MonomorphicImpl(const Impl& impl) : impl_(impl) {}
+
+    Result Perform(const ArgumentTuple& args) override {
+      return impl_.template Perform<Result>(args);
+    }
+
+   private:
+    Impl impl_;
+
+    GTEST_DISALLOW_ASSIGN_(MonomorphicImpl);
+  };
+
+  Impl impl_;
+
+  GTEST_DISALLOW_ASSIGN_(PolymorphicAction);
+};
+
+// Creates an Action from its implementation and returns it.  The
+// created Action object owns the implementation.
+template <typename F>
+Action<F> MakeAction(ActionInterface<F>* impl) {
+  return Action<F>(impl);
+}
+
+// Creates a polymorphic action from its implementation.  This is
+// easier to use than the PolymorphicAction<Impl> constructor as it
+// doesn't require you to explicitly write the template argument, e.g.
+//
+//   MakePolymorphicAction(foo);
+// vs
+//   PolymorphicAction<TypeOfFoo>(foo);
+template <typename Impl>
+inline PolymorphicAction<Impl> MakePolymorphicAction(const Impl& impl) {
+  return PolymorphicAction<Impl>(impl);
+}
+
+namespace internal {
+
+// Helper struct to specialize ReturnAction to execute a move instead of a copy
+// on return. Useful for move-only types, but could be used on any type.
+template <typename T>
+struct ByMoveWrapper {
+  explicit ByMoveWrapper(T value) : payload(std::move(value)) {}
+  T payload;
+};
+
+// Implements the polymorphic Return(x) action, which can be used in
+// any function that returns the type of x, regardless of the argument
+// types.
+//
+// Note: The value passed into Return must be converted into
+// Function<F>::Result when this action is cast to Action<F> rather than
+// when that action is performed. This is important in scenarios like
+//
+// MOCK_METHOD1(Method, T(U));
+// ...
+// {
+//   Foo foo;
+//   X x(&foo);
+//   EXPECT_CALL(mock, Method(_)).WillOnce(Return(x));
+// }
+//
+// In the example above the variable x holds reference to foo which leaves
+// scope and gets destroyed.  If copying X just copies a reference to foo,
+// that copy will be left with a hanging reference.  If conversion to T
+// makes a copy of foo, the above code is safe. To support that scenario, we
+// need to make sure that the type conversion happens inside the EXPECT_CALL
+// statement, and conversion of the result of Return to Action<T(U)> is a
+// good place for that.
+//
+// The real life example of the above scenario happens when an invocation
+// of gtl::Container() is passed into Return.
+//
+template <typename R>
+class ReturnAction {
+ public:
+  // Constructs a ReturnAction object from the value to be returned.
+  // 'value' is passed by value instead of by const reference in order
+  // to allow Return("string literal") to compile.
+  explicit ReturnAction(R value) : value_(new R(std::move(value))) {}
+
+  // This template type conversion operator allows Return(x) to be
+  // used in ANY function that returns x's type.
+  template <typename F>
+  operator Action<F>() const {  // NOLINT
+    // Assert statement belongs here because this is the best place to verify
+    // conditions on F. It produces the clearest error messages
+    // in most compilers.
+    // Impl really belongs in this scope as a local class but can't
+    // because MSVC produces duplicate symbols in different translation units
+    // in this case. Until MS fixes that bug we put Impl into the class scope
+    // and put the typedef both here (for use in assert statement) and
+    // in the Impl class. But both definitions must be the same.
+    typedef typename Function<F>::Result Result;
+    GTEST_COMPILE_ASSERT_(
+        !std::is_reference<Result>::value,
+        use_ReturnRef_instead_of_Return_to_return_a_reference);
+    static_assert(!std::is_void<Result>::value,
+                  "Can't use Return() on an action expected to return `void`.");
+    return Action<F>(new Impl<R, F>(value_));
+  }
+
+ private:
+  // Implements the Return(x) action for a particular function type F.
+  template <typename R_, typename F>
+  class Impl : public ActionInterface<F> {
+   public:
+    typedef typename Function<F>::Result Result;
+    typedef typename Function<F>::ArgumentTuple ArgumentTuple;
+
+    // The implicit cast is necessary when Result has more than one
+    // single-argument constructor (e.g. Result is std::vector<int>) and R
+    // has a type conversion operator template.  In that case, value_(value)
+    // won't compile as the compiler doesn't known which constructor of
+    // Result to call.  ImplicitCast_ forces the compiler to convert R to
+    // Result without considering explicit constructors, thus resolving the
+    // ambiguity. value_ is then initialized using its copy constructor.
+    explicit Impl(const std::shared_ptr<R>& value)
+        : value_before_cast_(*value),
+          value_(ImplicitCast_<Result>(value_before_cast_)) {}
+
+    Result Perform(const ArgumentTuple&) override { return value_; }
+
+   private:
+    GTEST_COMPILE_ASSERT_(!std::is_reference<Result>::value,
+                          Result_cannot_be_a_reference_type);
+    // We save the value before casting just in case it is being cast to a
+    // wrapper type.
+    R value_before_cast_;
+    Result value_;
+
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(Impl);
+  };
+
+  // Partially specialize for ByMoveWrapper. This version of ReturnAction will
+  // move its contents instead.
+  template <typename R_, typename F>
+  class Impl<ByMoveWrapper<R_>, F> : public ActionInterface<F> {
+   public:
+    typedef typename Function<F>::Result Result;
+    typedef typename Function<F>::ArgumentTuple ArgumentTuple;
+
+    explicit Impl(const std::shared_ptr<R>& wrapper)
+        : performed_(false), wrapper_(wrapper) {}
+
+    Result Perform(const ArgumentTuple&) override {
+      GTEST_CHECK_(!performed_)
+          << "A ByMove() action should only be performed once.";
+      performed_ = true;
+      return std::move(wrapper_->payload);
+    }
+
+   private:
+    bool performed_;
+    const std::shared_ptr<R> wrapper_;
+
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+
+  const std::shared_ptr<R> value_;
+
+  GTEST_DISALLOW_ASSIGN_(ReturnAction);
+};
+
+// Implements the ReturnNull() action.
+class ReturnNullAction {
+ public:
+  // Allows ReturnNull() to be used in any pointer-returning function. In C++11
+  // this is enforced by returning nullptr, and in non-C++11 by asserting a
+  // pointer type on compile time.
+  template <typename Result, typename ArgumentTuple>
+  static Result Perform(const ArgumentTuple&) {
+    return nullptr;
+  }
+};
+
+// Implements the Return() action.
+class ReturnVoidAction {
+ public:
+  // Allows Return() to be used in any void-returning function.
+  template <typename Result, typename ArgumentTuple>
+  static void Perform(const ArgumentTuple&) {
+    static_assert(std::is_void<Result>::value, "Result should be void.");
+  }
+};
+
+// Implements the polymorphic ReturnRef(x) action, which can be used
+// in any function that returns a reference to the type of x,
+// regardless of the argument types.
+template <typename T>
+class ReturnRefAction {
+ public:
+  // Constructs a ReturnRefAction object from the reference to be returned.
+  explicit ReturnRefAction(T& ref) : ref_(ref) {}  // NOLINT
+
+  // This template type conversion operator allows ReturnRef(x) to be
+  // used in ANY function that returns a reference to x's type.
+  template <typename F>
+  operator Action<F>() const {
+    typedef typename Function<F>::Result Result;
+    // Asserts that the function return type is a reference.  This
+    // catches the user error of using ReturnRef(x) when Return(x)
+    // should be used, and generates some helpful error message.
+    GTEST_COMPILE_ASSERT_(std::is_reference<Result>::value,
+                          use_Return_instead_of_ReturnRef_to_return_a_value);
+    return Action<F>(new Impl<F>(ref_));
+  }
+
+ private:
+  // Implements the ReturnRef(x) action for a particular function type F.
+  template <typename F>
+  class Impl : public ActionInterface<F> {
+   public:
+    typedef typename Function<F>::Result Result;
+    typedef typename Function<F>::ArgumentTuple ArgumentTuple;
+
+    explicit Impl(T& ref) : ref_(ref) {}  // NOLINT
+
+    Result Perform(const ArgumentTuple&) override { return ref_; }
+
+   private:
+    T& ref_;
+
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+
+  T& ref_;
+
+  GTEST_DISALLOW_ASSIGN_(ReturnRefAction);
+};
+
+// Implements the polymorphic ReturnRefOfCopy(x) action, which can be
+// used in any function that returns a reference to the type of x,
+// regardless of the argument types.
+template <typename T>
+class ReturnRefOfCopyAction {
+ public:
+  // Constructs a ReturnRefOfCopyAction object from the reference to
+  // be returned.
+  explicit ReturnRefOfCopyAction(const T& value) : value_(value) {}  // NOLINT
+
+  // This template type conversion operator allows ReturnRefOfCopy(x) to be
+  // used in ANY function that returns a reference to x's type.
+  template <typename F>
+  operator Action<F>() const {
+    typedef typename Function<F>::Result Result;
+    // Asserts that the function return type is a reference.  This
+    // catches the user error of using ReturnRefOfCopy(x) when Return(x)
+    // should be used, and generates some helpful error message.
+    GTEST_COMPILE_ASSERT_(
+        std::is_reference<Result>::value,
+        use_Return_instead_of_ReturnRefOfCopy_to_return_a_value);
+    return Action<F>(new Impl<F>(value_));
+  }
+
+ private:
+  // Implements the ReturnRefOfCopy(x) action for a particular function type F.
+  template <typename F>
+  class Impl : public ActionInterface<F> {
+   public:
+    typedef typename Function<F>::Result Result;
+    typedef typename Function<F>::ArgumentTuple ArgumentTuple;
+
+    explicit Impl(const T& value) : value_(value) {}  // NOLINT
+
+    Result Perform(const ArgumentTuple&) override { return value_; }
+
+   private:
+    T value_;
+
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+
+  const T value_;
+
+  GTEST_DISALLOW_ASSIGN_(ReturnRefOfCopyAction);
+};
+
+// Implements the polymorphic DoDefault() action.
+class DoDefaultAction {
+ public:
+  // This template type conversion operator allows DoDefault() to be
+  // used in any function.
+  template <typename F>
+  operator Action<F>() const { return Action<F>(); }  // NOLINT
+};
+
+// Implements the Assign action to set a given pointer referent to a
+// particular value.
+template <typename T1, typename T2>
+class AssignAction {
+ public:
+  AssignAction(T1* ptr, T2 value) : ptr_(ptr), value_(value) {}
+
+  template <typename Result, typename ArgumentTuple>
+  void Perform(const ArgumentTuple& /* args */) const {
+    *ptr_ = value_;
+  }
+
+ private:
+  T1* const ptr_;
+  const T2 value_;
+
+  GTEST_DISALLOW_ASSIGN_(AssignAction);
+};
+
+#if !GTEST_OS_WINDOWS_MOBILE
+
+// Implements the SetErrnoAndReturn action to simulate return from
+// various system calls and libc functions.
+template <typename T>
+class SetErrnoAndReturnAction {
+ public:
+  SetErrnoAndReturnAction(int errno_value, T result)
+      : errno_(errno_value),
+        result_(result) {}
+  template <typename Result, typename ArgumentTuple>
+  Result Perform(const ArgumentTuple& /* args */) const {
+    errno = errno_;
+    return result_;
+  }
+
+ private:
+  const int errno_;
+  const T result_;
+
+  GTEST_DISALLOW_ASSIGN_(SetErrnoAndReturnAction);
+};
+
+#endif  // !GTEST_OS_WINDOWS_MOBILE
+
+// Implements the SetArgumentPointee<N>(x) action for any function
+// whose N-th argument (0-based) is a pointer to x's type.
+template <size_t N, typename A, typename = void>
+struct SetArgumentPointeeAction {
+  A value;
+
+  template <typename... Args>
+  void operator()(const Args&... args) const {
+    *::std::get<N>(std::tie(args...)) = value;
+  }
+};
+
+// Implements the Invoke(object_ptr, &Class::Method) action.
+template <class Class, typename MethodPtr>
+struct InvokeMethodAction {
+  Class* const obj_ptr;
+  const MethodPtr method_ptr;
+
+  template <typename... Args>
+  auto operator()(Args&&... args) const
+      -> decltype((obj_ptr->*method_ptr)(std::forward<Args>(args)...)) {
+    return (obj_ptr->*method_ptr)(std::forward<Args>(args)...);
+  }
+};
+
+// Implements the InvokeWithoutArgs(f) action.  The template argument
+// FunctionImpl is the implementation type of f, which can be either a
+// function pointer or a functor.  InvokeWithoutArgs(f) can be used as an
+// Action<F> as long as f's type is compatible with F.
+template <typename FunctionImpl>
+struct InvokeWithoutArgsAction {
+  FunctionImpl function_impl;
+
+  // Allows InvokeWithoutArgs(f) to be used as any action whose type is
+  // compatible with f.
+  template <typename... Args>
+  auto operator()(const Args&...) -> decltype(function_impl()) {
+    return function_impl();
+  }
+};
+
+// Implements the InvokeWithoutArgs(object_ptr, &Class::Method) action.
+template <class Class, typename MethodPtr>
+struct InvokeMethodWithoutArgsAction {
+  Class* const obj_ptr;
+  const MethodPtr method_ptr;
+
+  using ReturnType = typename std::result_of<MethodPtr(Class*)>::type;
+
+  template <typename... Args>
+  ReturnType operator()(const Args&...) const {
+    return (obj_ptr->*method_ptr)();
+  }
+};
+
+// Implements the IgnoreResult(action) action.
+template <typename A>
+class IgnoreResultAction {
+ public:
+  explicit IgnoreResultAction(const A& action) : action_(action) {}
+
+  template <typename F>
+  operator Action<F>() const {
+    // Assert statement belongs here because this is the best place to verify
+    // conditions on F. It produces the clearest error messages
+    // in most compilers.
+    // Impl really belongs in this scope as a local class but can't
+    // because MSVC produces duplicate symbols in different translation units
+    // in this case. Until MS fixes that bug we put Impl into the class scope
+    // and put the typedef both here (for use in assert statement) and
+    // in the Impl class. But both definitions must be the same.
+    typedef typename internal::Function<F>::Result Result;
+
+    // Asserts at compile time that F returns void.
+    static_assert(std::is_void<Result>::value, "Result type should be void.");
+
+    return Action<F>(new Impl<F>(action_));
+  }
+
+ private:
+  template <typename F>
+  class Impl : public ActionInterface<F> {
+   public:
+    typedef typename internal::Function<F>::Result Result;
+    typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
+
+    explicit Impl(const A& action) : action_(action) {}
+
+    void Perform(const ArgumentTuple& args) override {
+      // Performs the action and ignores its result.
+      action_.Perform(args);
+    }
+
+   private:
+    // Type OriginalFunction is the same as F except that its return
+    // type is IgnoredValue.
+    typedef typename internal::Function<F>::MakeResultIgnoredValue
+        OriginalFunction;
+
+    const Action<OriginalFunction> action_;
+
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+
+  const A action_;
+
+  GTEST_DISALLOW_ASSIGN_(IgnoreResultAction);
+};
+
+template <typename InnerAction, size_t... I>
+struct WithArgsAction {
+  InnerAction action;
+
+  // The inner action could be anything convertible to Action<X>.
+  // We use the conversion operator to detect the signature of the inner Action.
+  template <typename R, typename... Args>
+  operator Action<R(Args...)>() const {  // NOLINT
+    Action<R(typename std::tuple_element<I, std::tuple<Args...>>::type...)>
+        converted(action);
+
+    return [converted](Args... args) -> R {
+      return converted.Perform(std::forward_as_tuple(
+        std::get<I>(std::forward_as_tuple(std::forward<Args>(args)...))...));
+    };
+  }
+};
+
+template <typename... Actions>
+struct DoAllAction {
+ private:
+  template <typename... Args, size_t... I>
+  std::vector<Action<void(Args...)>> Convert(IndexSequence<I...>) const {
+    return {std::get<I>(actions)...};
+  }
+
+ public:
+  std::tuple<Actions...> actions;
+
+  template <typename R, typename... Args>
+  operator Action<R(Args...)>() const {  // NOLINT
+    struct Op {
+      std::vector<Action<void(Args...)>> converted;
+      Action<R(Args...)> last;
+      R operator()(Args... args) const {
+        auto tuple_args = std::forward_as_tuple(std::forward<Args>(args)...);
+        for (auto& a : converted) {
+          a.Perform(tuple_args);
+        }
+        return last.Perform(tuple_args);
+      }
+    };
+    return Op{Convert<Args...>(MakeIndexSequence<sizeof...(Actions) - 1>()),
+              std::get<sizeof...(Actions) - 1>(actions)};
+  }
+};
+
+}  // namespace internal
+
+// An Unused object can be implicitly constructed from ANY value.
+// This is handy when defining actions that ignore some or all of the
+// mock function arguments.  For example, given
+//
+//   MOCK_METHOD3(Foo, double(const string& label, double x, double y));
+//   MOCK_METHOD3(Bar, double(int index, double x, double y));
+//
+// instead of
+//
+//   double DistanceToOriginWithLabel(const string& label, double x, double y) {
+//     return sqrt(x*x + y*y);
+//   }
+//   double DistanceToOriginWithIndex(int index, double x, double y) {
+//     return sqrt(x*x + y*y);
+//   }
+//   ...
+//   EXPECT_CALL(mock, Foo("abc", _, _))
+//       .WillOnce(Invoke(DistanceToOriginWithLabel));
+//   EXPECT_CALL(mock, Bar(5, _, _))
+//       .WillOnce(Invoke(DistanceToOriginWithIndex));
+//
+// you could write
+//
+//   // We can declare any uninteresting argument as Unused.
+//   double DistanceToOrigin(Unused, double x, double y) {
+//     return sqrt(x*x + y*y);
+//   }
+//   ...
+//   EXPECT_CALL(mock, Foo("abc", _, _)).WillOnce(Invoke(DistanceToOrigin));
+//   EXPECT_CALL(mock, Bar(5, _, _)).WillOnce(Invoke(DistanceToOrigin));
+typedef internal::IgnoredValue Unused;
+
+// Creates an action that does actions a1, a2, ..., sequentially in
+// each invocation.
+template <typename... Action>
+internal::DoAllAction<typename std::decay<Action>::type...> DoAll(
+    Action&&... action) {
+  return {std::forward_as_tuple(std::forward<Action>(action)...)};
+}
+
+// WithArg<k>(an_action) creates an action that passes the k-th
+// (0-based) argument of the mock function to an_action and performs
+// it.  It adapts an action accepting one argument to one that accepts
+// multiple arguments.  For convenience, we also provide
+// WithArgs<k>(an_action) (defined below) as a synonym.
+template <size_t k, typename InnerAction>
+internal::WithArgsAction<typename std::decay<InnerAction>::type, k>
+WithArg(InnerAction&& action) {
+  return {std::forward<InnerAction>(action)};
+}
+
+// WithArgs<N1, N2, ..., Nk>(an_action) creates an action that passes
+// the selected arguments of the mock function to an_action and
+// performs it.  It serves as an adaptor between actions with
+// different argument lists.
+template <size_t k, size_t... ks, typename InnerAction>
+internal::WithArgsAction<typename std::decay<InnerAction>::type, k, ks...>
+WithArgs(InnerAction&& action) {
+  return {std::forward<InnerAction>(action)};
+}
+
+// WithoutArgs(inner_action) can be used in a mock function with a
+// non-empty argument list to perform inner_action, which takes no
+// argument.  In other words, it adapts an action accepting no
+// argument to one that accepts (and ignores) arguments.
+template <typename InnerAction>
+internal::WithArgsAction<typename std::decay<InnerAction>::type>
+WithoutArgs(InnerAction&& action) {
+  return {std::forward<InnerAction>(action)};
+}
+
+// Creates an action that returns 'value'.  'value' is passed by value
+// instead of const reference - otherwise Return("string literal")
+// will trigger a compiler error about using array as initializer.
+template <typename R>
+internal::ReturnAction<R> Return(R value) {
+  return internal::ReturnAction<R>(std::move(value));
+}
+
+// Creates an action that returns NULL.
+inline PolymorphicAction<internal::ReturnNullAction> ReturnNull() {
+  return MakePolymorphicAction(internal::ReturnNullAction());
+}
+
+// Creates an action that returns from a void function.
+inline PolymorphicAction<internal::ReturnVoidAction> Return() {
+  return MakePolymorphicAction(internal::ReturnVoidAction());
+}
+
+// Creates an action that returns the reference to a variable.
+template <typename R>
+inline internal::ReturnRefAction<R> ReturnRef(R& x) {  // NOLINT
+  return internal::ReturnRefAction<R>(x);
+}
+
+// Creates an action that returns the reference to a copy of the
+// argument.  The copy is created when the action is constructed and
+// lives as long as the action.
+template <typename R>
+inline internal::ReturnRefOfCopyAction<R> ReturnRefOfCopy(const R& x) {
+  return internal::ReturnRefOfCopyAction<R>(x);
+}
+
+// Modifies the parent action (a Return() action) to perform a move of the
+// argument instead of a copy.
+// Return(ByMove()) actions can only be executed once and will assert this
+// invariant.
+template <typename R>
+internal::ByMoveWrapper<R> ByMove(R x) {
+  return internal::ByMoveWrapper<R>(std::move(x));
+}
+
+// Creates an action that does the default action for the give mock function.
+inline internal::DoDefaultAction DoDefault() {
+  return internal::DoDefaultAction();
+}
+
+// Creates an action that sets the variable pointed by the N-th
+// (0-based) function argument to 'value'.
+template <size_t N, typename T>
+internal::SetArgumentPointeeAction<N, T> SetArgPointee(T x) {
+  return {std::move(x)};
+}
+
+// The following version is DEPRECATED.
+template <size_t N, typename T>
+internal::SetArgumentPointeeAction<N, T> SetArgumentPointee(T x) {
+  return {std::move(x)};
+}
+
+// Creates an action that sets a pointer referent to a given value.
+template <typename T1, typename T2>
+PolymorphicAction<internal::AssignAction<T1, T2> > Assign(T1* ptr, T2 val) {
+  return MakePolymorphicAction(internal::AssignAction<T1, T2>(ptr, val));
+}
+
+#if !GTEST_OS_WINDOWS_MOBILE
+
+// Creates an action that sets errno and returns the appropriate error.
+template <typename T>
+PolymorphicAction<internal::SetErrnoAndReturnAction<T> >
+SetErrnoAndReturn(int errval, T result) {
+  return MakePolymorphicAction(
+      internal::SetErrnoAndReturnAction<T>(errval, result));
+}
+
+#endif  // !GTEST_OS_WINDOWS_MOBILE
+
+// Various overloads for Invoke().
+
+// Legacy function.
+// Actions can now be implicitly constructed from callables. No need to create
+// wrapper objects.
+// This function exists for backwards compatibility.
+template <typename FunctionImpl>
+typename std::decay<FunctionImpl>::type Invoke(FunctionImpl&& function_impl) {
+  return std::forward<FunctionImpl>(function_impl);
+}
+
+// Creates an action that invokes the given method on the given object
+// with the mock function's arguments.
+template <class Class, typename MethodPtr>
+internal::InvokeMethodAction<Class, MethodPtr> Invoke(Class* obj_ptr,
+                                                      MethodPtr method_ptr) {
+  return {obj_ptr, method_ptr};
+}
+
+// Creates an action that invokes 'function_impl' with no argument.
+template <typename FunctionImpl>
+internal::InvokeWithoutArgsAction<typename std::decay<FunctionImpl>::type>
+InvokeWithoutArgs(FunctionImpl function_impl) {
+  return {std::move(function_impl)};
+}
+
+// Creates an action that invokes the given method on the given object
+// with no argument.
+template <class Class, typename MethodPtr>
+internal::InvokeMethodWithoutArgsAction<Class, MethodPtr> InvokeWithoutArgs(
+    Class* obj_ptr, MethodPtr method_ptr) {
+  return {obj_ptr, method_ptr};
+}
+
+// Creates an action that performs an_action and throws away its
+// result.  In other words, it changes the return type of an_action to
+// void.  an_action MUST NOT return void, or the code won't compile.
+template <typename A>
+inline internal::IgnoreResultAction<A> IgnoreResult(const A& an_action) {
+  return internal::IgnoreResultAction<A>(an_action);
+}
+
+// Creates a reference wrapper for the given L-value.  If necessary,
+// you can explicitly specify the type of the reference.  For example,
+// suppose 'derived' is an object of type Derived, ByRef(derived)
+// would wrap a Derived&.  If you want to wrap a const Base& instead,
+// where Base is a base class of Derived, just write:
+//
+//   ByRef<const Base>(derived)
+//
+// N.B. ByRef is redundant with std::ref, std::cref and std::reference_wrapper.
+// However, it may still be used for consistency with ByMove().
+template <typename T>
+inline ::std::reference_wrapper<T> ByRef(T& l_value) {  // NOLINT
+  return ::std::reference_wrapper<T>(l_value);
+}
+
+}  // namespace testing
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_ACTIONS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-cardinalities.h b/build/_deps/googletest-src/googlemock/include/gmock/gmock-cardinalities.h
new file mode 100644
index 0000000000000000000000000000000000000000..46e01e102d5841a5ef8ee18d681d0393ac051bbf
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-cardinalities.h
@@ -0,0 +1,157 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements some commonly used cardinalities.  More
+// cardinalities can be defined by the user implementing the
+// CardinalityInterface interface if necessary.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_CARDINALITIES_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_CARDINALITIES_H_
+
+#include <limits.h>
+#include <memory>
+#include <ostream>  // NOLINT
+#include "gmock/internal/gmock-port.h"
+#include "gtest/gtest.h"
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
+namespace testing {
+
+// To implement a cardinality Foo, define:
+//   1. a class FooCardinality that implements the
+//      CardinalityInterface interface, and
+//   2. a factory function that creates a Cardinality object from a
+//      const FooCardinality*.
+//
+// The two-level delegation design follows that of Matcher, providing
+// consistency for extension developers.  It also eases ownership
+// management as Cardinality objects can now be copied like plain values.
+
+// The implementation of a cardinality.
+class CardinalityInterface {
+ public:
+  virtual ~CardinalityInterface() {}
+
+  // Conservative estimate on the lower/upper bound of the number of
+  // calls allowed.
+  virtual int ConservativeLowerBound() const { return 0; }
+  virtual int ConservativeUpperBound() const { return INT_MAX; }
+
+  // Returns true if and only if call_count calls will satisfy this
+  // cardinality.
+  virtual bool IsSatisfiedByCallCount(int call_count) const = 0;
+
+  // Returns true if and only if call_count calls will saturate this
+  // cardinality.
+  virtual bool IsSaturatedByCallCount(int call_count) const = 0;
+
+  // Describes self to an ostream.
+  virtual void DescribeTo(::std::ostream* os) const = 0;
+};
+
+// A Cardinality is a copyable and IMMUTABLE (except by assignment)
+// object that specifies how many times a mock function is expected to
+// be called.  The implementation of Cardinality is just a std::shared_ptr
+// to const CardinalityInterface. Don't inherit from Cardinality!
+class GTEST_API_ Cardinality {
+ public:
+  // Constructs a null cardinality.  Needed for storing Cardinality
+  // objects in STL containers.
+  Cardinality() {}
+
+  // Constructs a Cardinality from its implementation.
+  explicit Cardinality(const CardinalityInterface* impl) : impl_(impl) {}
+
+  // Conservative estimate on the lower/upper bound of the number of
+  // calls allowed.
+  int ConservativeLowerBound() const { return impl_->ConservativeLowerBound(); }
+  int ConservativeUpperBound() const { return impl_->ConservativeUpperBound(); }
+
+  // Returns true if and only if call_count calls will satisfy this
+  // cardinality.
+  bool IsSatisfiedByCallCount(int call_count) const {
+    return impl_->IsSatisfiedByCallCount(call_count);
+  }
+
+  // Returns true if and only if call_count calls will saturate this
+  // cardinality.
+  bool IsSaturatedByCallCount(int call_count) const {
+    return impl_->IsSaturatedByCallCount(call_count);
+  }
+
+  // Returns true if and only if call_count calls will over-saturate this
+  // cardinality, i.e. exceed the maximum number of allowed calls.
+  bool IsOverSaturatedByCallCount(int call_count) const {
+    return impl_->IsSaturatedByCallCount(call_count) &&
+        !impl_->IsSatisfiedByCallCount(call_count);
+  }
+
+  // Describes self to an ostream
+  void DescribeTo(::std::ostream* os) const { impl_->DescribeTo(os); }
+
+  // Describes the given actual call count to an ostream.
+  static void DescribeActualCallCountTo(int actual_call_count,
+                                        ::std::ostream* os);
+
+ private:
+  std::shared_ptr<const CardinalityInterface> impl_;
+};
+
+// Creates a cardinality that allows at least n calls.
+GTEST_API_ Cardinality AtLeast(int n);
+
+// Creates a cardinality that allows at most n calls.
+GTEST_API_ Cardinality AtMost(int n);
+
+// Creates a cardinality that allows any number of calls.
+GTEST_API_ Cardinality AnyNumber();
+
+// Creates a cardinality that allows between min and max calls.
+GTEST_API_ Cardinality Between(int min, int max);
+
+// Creates a cardinality that allows exactly n calls.
+GTEST_API_ Cardinality Exactly(int n);
+
+// Creates a cardinality from its implementation.
+inline Cardinality MakeCardinality(const CardinalityInterface* c) {
+  return Cardinality(c);
+}
+
+}  // namespace testing
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_CARDINALITIES_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-function-mocker.h b/build/_deps/googletest-src/googlemock/include/gmock/gmock-function-mocker.h
new file mode 100644
index 0000000000000000000000000000000000000000..cc1535c806bf4f0080e87dc716fe666fc1e4c840
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-function-mocker.h
@@ -0,0 +1,253 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements MOCK_METHOD.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_FUNCTION_MOCKER_H_  // NOLINT
+#define THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_FUNCTION_MOCKER_H_  // NOLINT
+
+#include "gmock/gmock-generated-function-mockers.h"  // NOLINT
+#include "gmock/internal/gmock-pp.h"
+
+#define MOCK_METHOD(...) \
+  GMOCK_PP_VARIADIC_CALL(GMOCK_INTERNAL_MOCK_METHOD_ARG_, __VA_ARGS__)
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_1(...) \
+  GMOCK_INTERNAL_WRONG_ARITY(__VA_ARGS__)
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_2(...) \
+  GMOCK_INTERNAL_WRONG_ARITY(__VA_ARGS__)
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_3(_Ret, _MethodName, _Args) \
+  GMOCK_INTERNAL_MOCK_METHOD_ARG_4(_Ret, _MethodName, _Args, ())
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_4(_Ret, _MethodName, _Args, _Spec)     \
+  GMOCK_INTERNAL_ASSERT_PARENTHESIS(_Args);                                   \
+  GMOCK_INTERNAL_ASSERT_PARENTHESIS(_Spec);                                   \
+  GMOCK_INTERNAL_ASSERT_VALID_SIGNATURE(                                      \
+      GMOCK_PP_NARG0 _Args, GMOCK_INTERNAL_SIGNATURE(_Ret, _Args));           \
+  GMOCK_INTERNAL_ASSERT_VALID_SPEC(_Spec)                                     \
+  GMOCK_INTERNAL_MOCK_METHOD_IMPL(                                            \
+      GMOCK_PP_NARG0 _Args, _MethodName, GMOCK_INTERNAL_HAS_CONST(_Spec),     \
+      GMOCK_INTERNAL_HAS_OVERRIDE(_Spec), GMOCK_INTERNAL_HAS_FINAL(_Spec),    \
+      GMOCK_INTERNAL_HAS_NOEXCEPT(_Spec), GMOCK_INTERNAL_GET_CALLTYPE(_Spec), \
+      (GMOCK_INTERNAL_SIGNATURE(_Ret, _Args)))
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_5(...) \
+  GMOCK_INTERNAL_WRONG_ARITY(__VA_ARGS__)
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_6(...) \
+  GMOCK_INTERNAL_WRONG_ARITY(__VA_ARGS__)
+
+#define GMOCK_INTERNAL_MOCK_METHOD_ARG_7(...) \
+  GMOCK_INTERNAL_WRONG_ARITY(__VA_ARGS__)
+
+#define GMOCK_INTERNAL_WRONG_ARITY(...)                                      \
+  static_assert(                                                             \
+      false,                                                                 \
+      "MOCK_METHOD must be called with 3 or 4 arguments. _Ret, "             \
+      "_MethodName, _Args and optionally _Spec. _Args and _Spec must be "    \
+      "enclosed in parentheses. If _Ret is a type with unprotected commas, " \
+      "it must also be enclosed in parentheses.")
+
+#define GMOCK_INTERNAL_ASSERT_PARENTHESIS(_Tuple) \
+  static_assert(                                  \
+      GMOCK_PP_IS_ENCLOSED_PARENS(_Tuple),        \
+      GMOCK_PP_STRINGIZE(_Tuple) " should be enclosed in parentheses.")
+
+#define GMOCK_INTERNAL_ASSERT_VALID_SIGNATURE(_N, ...)                 \
+  static_assert(                                                       \
+      std::is_function<__VA_ARGS__>::value,                            \
+      "Signature must be a function type, maybe return type contains " \
+      "unprotected comma.");                                           \
+  static_assert(                                                       \
+      ::testing::tuple_size<typename ::testing::internal::Function<    \
+              __VA_ARGS__>::ArgumentTuple>::value == _N,               \
+      "This method does not take " GMOCK_PP_STRINGIZE(                 \
+          _N) " arguments. Parenthesize all types with unproctected commas.")
+
+#define GMOCK_INTERNAL_ASSERT_VALID_SPEC(_Spec) \
+  GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_ASSERT_VALID_SPEC_ELEMENT, ~, _Spec)
+
+#define GMOCK_INTERNAL_MOCK_METHOD_IMPL(_N, _MethodName, _Constness,           \
+                                        _Override, _Final, _Noexcept,          \
+                                        _CallType, _Signature)                 \
+  typename ::testing::internal::Function<GMOCK_PP_REMOVE_PARENS(               \
+      _Signature)>::Result                                                     \
+  GMOCK_INTERNAL_EXPAND(_CallType)                                             \
+      _MethodName(GMOCK_PP_REPEAT(GMOCK_INTERNAL_PARAMETER, _Signature, _N))   \
+          GMOCK_PP_IF(_Constness, const, ) GMOCK_PP_IF(_Noexcept, noexcept, )  \
+              GMOCK_PP_IF(_Override, override, )                               \
+                  GMOCK_PP_IF(_Final, final, ) {                               \
+    GMOCK_MOCKER_(_N, _Constness, _MethodName)                                 \
+        .SetOwnerAndName(this, #_MethodName);                                  \
+    return GMOCK_MOCKER_(_N, _Constness, _MethodName)                          \
+        .Invoke(GMOCK_PP_REPEAT(GMOCK_INTERNAL_FORWARD_ARG, _Signature, _N));  \
+  }                                                                            \
+  ::testing::MockSpec<GMOCK_PP_REMOVE_PARENS(_Signature)> gmock_##_MethodName( \
+      GMOCK_PP_REPEAT(GMOCK_INTERNAL_MATCHER_PARAMETER, _Signature, _N))       \
+      GMOCK_PP_IF(_Constness, const, ) {                                       \
+    GMOCK_MOCKER_(_N, _Constness, _MethodName).RegisterOwner(this);            \
+    return GMOCK_MOCKER_(_N, _Constness, _MethodName)                          \
+        .With(GMOCK_PP_REPEAT(GMOCK_INTERNAL_MATCHER_ARGUMENT, , _N));         \
+  }                                                                            \
+  ::testing::MockSpec<GMOCK_PP_REMOVE_PARENS(_Signature)> gmock_##_MethodName( \
+      const ::testing::internal::WithoutMatchers&,                             \
+      GMOCK_PP_IF(_Constness, const, )::testing::internal::Function<           \
+          GMOCK_PP_REMOVE_PARENS(_Signature)>*)                                \
+      const GMOCK_PP_IF(_Noexcept, noexcept, ) {                               \
+    return GMOCK_PP_CAT(::testing::internal::AdjustConstness_,                 \
+                        GMOCK_PP_IF(_Constness, const, ))(this)                \
+        ->gmock_##_MethodName(GMOCK_PP_REPEAT(                                 \
+            GMOCK_INTERNAL_A_MATCHER_ARGUMENT, _Signature, _N));               \
+  }                                                                            \
+  mutable ::testing::FunctionMocker<GMOCK_PP_REMOVE_PARENS(_Signature)>        \
+      GMOCK_MOCKER_(_N, _Constness, _MethodName)
+
+#define GMOCK_INTERNAL_EXPAND(...) __VA_ARGS__
+
+// Five Valid modifiers.
+#define GMOCK_INTERNAL_HAS_CONST(_Tuple) \
+  GMOCK_PP_HAS_COMMA(GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_DETECT_CONST, ~, _Tuple))
+
+#define GMOCK_INTERNAL_HAS_OVERRIDE(_Tuple) \
+  GMOCK_PP_HAS_COMMA(                       \
+      GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_DETECT_OVERRIDE, ~, _Tuple))
+
+#define GMOCK_INTERNAL_HAS_FINAL(_Tuple) \
+  GMOCK_PP_HAS_COMMA(GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_DETECT_FINAL, ~, _Tuple))
+
+#define GMOCK_INTERNAL_HAS_NOEXCEPT(_Tuple) \
+  GMOCK_PP_HAS_COMMA(                       \
+      GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_DETECT_NOEXCEPT, ~, _Tuple))
+
+#define GMOCK_INTERNAL_GET_CALLTYPE(_Tuple) \
+  GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_GET_CALLTYPE_IMPL, ~, _Tuple)
+
+#define GMOCK_INTERNAL_ASSERT_VALID_SPEC_ELEMENT(_i, _, _elem)            \
+  static_assert(                                                          \
+      (GMOCK_PP_HAS_COMMA(GMOCK_INTERNAL_DETECT_CONST(_i, _, _elem)) +    \
+       GMOCK_PP_HAS_COMMA(GMOCK_INTERNAL_DETECT_OVERRIDE(_i, _, _elem)) + \
+       GMOCK_PP_HAS_COMMA(GMOCK_INTERNAL_DETECT_FINAL(_i, _, _elem)) +    \
+       GMOCK_PP_HAS_COMMA(GMOCK_INTERNAL_DETECT_NOEXCEPT(_i, _, _elem)) + \
+       GMOCK_INTERNAL_IS_CALLTYPE(_elem)) == 1,                           \
+      GMOCK_PP_STRINGIZE(                                                 \
+          _elem) " cannot be recognized as a valid specification modifier.");
+
+// Modifiers implementation.
+#define GMOCK_INTERNAL_DETECT_CONST(_i, _, _elem) \
+  GMOCK_PP_CAT(GMOCK_INTERNAL_DETECT_CONST_I_, _elem)
+
+#define GMOCK_INTERNAL_DETECT_CONST_I_const ,
+
+#define GMOCK_INTERNAL_DETECT_OVERRIDE(_i, _, _elem) \
+  GMOCK_PP_CAT(GMOCK_INTERNAL_DETECT_OVERRIDE_I_, _elem)
+
+#define GMOCK_INTERNAL_DETECT_OVERRIDE_I_override ,
+
+#define GMOCK_INTERNAL_DETECT_FINAL(_i, _, _elem) \
+  GMOCK_PP_CAT(GMOCK_INTERNAL_DETECT_FINAL_I_, _elem)
+
+#define GMOCK_INTERNAL_DETECT_FINAL_I_final ,
+
+// TODO(iserna): Maybe noexcept should accept an argument here as well.
+#define GMOCK_INTERNAL_DETECT_NOEXCEPT(_i, _, _elem) \
+  GMOCK_PP_CAT(GMOCK_INTERNAL_DETECT_NOEXCEPT_I_, _elem)
+
+#define GMOCK_INTERNAL_DETECT_NOEXCEPT_I_noexcept ,
+
+#define GMOCK_INTERNAL_GET_CALLTYPE_IMPL(_i, _, _elem)           \
+  GMOCK_PP_IF(GMOCK_INTERNAL_IS_CALLTYPE(_elem),                 \
+              GMOCK_INTERNAL_GET_VALUE_CALLTYPE, GMOCK_PP_EMPTY) \
+  (_elem)
+
+// TODO(iserna): GMOCK_INTERNAL_IS_CALLTYPE and
+// GMOCK_INTERNAL_GET_VALUE_CALLTYPE needed more expansions to work on windows
+// maybe they can be simplified somehow.
+#define GMOCK_INTERNAL_IS_CALLTYPE(_arg) \
+  GMOCK_INTERNAL_IS_CALLTYPE_I(          \
+      GMOCK_PP_CAT(GMOCK_INTERNAL_IS_CALLTYPE_HELPER_, _arg))
+#define GMOCK_INTERNAL_IS_CALLTYPE_I(_arg) GMOCK_PP_IS_ENCLOSED_PARENS(_arg)
+
+#define GMOCK_INTERNAL_GET_VALUE_CALLTYPE(_arg) \
+  GMOCK_INTERNAL_GET_VALUE_CALLTYPE_I(          \
+      GMOCK_PP_CAT(GMOCK_INTERNAL_IS_CALLTYPE_HELPER_, _arg))
+#define GMOCK_INTERNAL_GET_VALUE_CALLTYPE_I(_arg) \
+  GMOCK_PP_CAT(GMOCK_PP_IDENTITY, _arg)
+
+#define GMOCK_INTERNAL_IS_CALLTYPE_HELPER_Calltype
+
+#define GMOCK_INTERNAL_SIGNATURE(_Ret, _Args)                         \
+  GMOCK_PP_IF(GMOCK_PP_IS_BEGIN_PARENS(_Ret), GMOCK_PP_REMOVE_PARENS, \
+              GMOCK_PP_IDENTITY)                                      \
+  (_Ret)(GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_GET_TYPE, _, _Args))
+
+#define GMOCK_INTERNAL_GET_TYPE(_i, _, _elem)                          \
+  GMOCK_PP_COMMA_IF(_i)                                                \
+  GMOCK_PP_IF(GMOCK_PP_IS_BEGIN_PARENS(_elem), GMOCK_PP_REMOVE_PARENS, \
+              GMOCK_PP_IDENTITY)                                       \
+  (_elem)
+
+#define GMOCK_INTERNAL_PARAMETER(_i, _Signature, _)        \
+  GMOCK_PP_COMMA_IF(_i)                                    \
+  GMOCK_INTERNAL_ARG_O(typename, GMOCK_PP_INC(_i),         \
+                       GMOCK_PP_REMOVE_PARENS(_Signature)) \
+  gmock_a##_i
+
+#define GMOCK_INTERNAL_FORWARD_ARG(_i, _Signature, _)                       \
+  GMOCK_PP_COMMA_IF(_i)                                                     \
+  ::std::forward<GMOCK_INTERNAL_ARG_O(typename, GMOCK_PP_INC(_i),           \
+                                      GMOCK_PP_REMOVE_PARENS(_Signature))>( \
+      gmock_a##_i)
+
+#define GMOCK_INTERNAL_MATCHER_PARAMETER(_i, _Signature, _)    \
+  GMOCK_PP_COMMA_IF(_i)                                        \
+  GMOCK_INTERNAL_MATCHER_O(typename, GMOCK_PP_INC(_i),         \
+                           GMOCK_PP_REMOVE_PARENS(_Signature)) \
+  gmock_a##_i
+
+#define GMOCK_INTERNAL_MATCHER_ARGUMENT(_i, _1, _2) \
+  GMOCK_PP_COMMA_IF(_i)                             \
+  gmock_a##_i
+
+#define GMOCK_INTERNAL_A_MATCHER_ARGUMENT(_i, _Signature, _)    \
+  GMOCK_PP_COMMA_IF(_i)                                         \
+  ::testing::A<GMOCK_INTERNAL_ARG_O(typename, GMOCK_PP_INC(_i), \
+                                    GMOCK_PP_REMOVE_PARENS(_Signature))>()
+
+#define GMOCK_INTERNAL_ARG_O(_tn, _i, ...) GMOCK_ARG_(_tn, _i, __VA_ARGS__)
+
+#define GMOCK_INTERNAL_MATCHER_O(_tn, _i, ...) \
+  GMOCK_MATCHER_(_tn, _i, __VA_ARGS__)
+
+#endif  // THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_FUNCTION_MOCKER_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-actions.h b/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-actions.h
new file mode 100644
index 0000000000000000000000000000000000000000..981af78ff9a1711585bd17a2785f2509f385f7ca
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-actions.h
@@ -0,0 +1,1884 @@
+// This file was GENERATED by command:
+//     pump.py gmock-generated-actions.h.pump
+// DO NOT EDIT BY HAND!!!
+
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements some commonly used variadic actions.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
+
+#include <memory>
+#include <utility>
+
+#include "gmock/gmock-actions.h"
+#include "gmock/internal/gmock-port.h"
+
+namespace testing {
+namespace internal {
+
+// A macro from the ACTION* family (defined later in this file)
+// defines an action that can be used in a mock function.  Typically,
+// these actions only care about a subset of the arguments of the mock
+// function.  For example, if such an action only uses the second
+// argument, it can be used in any mock function that takes >= 2
+// arguments where the type of the second argument is compatible.
+//
+// Therefore, the action implementation must be prepared to take more
+// arguments than it needs.  The ExcessiveArg type is used to
+// represent those excessive arguments.  In order to keep the compiler
+// error messages tractable, we define it in the testing namespace
+// instead of testing::internal.  However, this is an INTERNAL TYPE
+// and subject to change without notice, so a user MUST NOT USE THIS
+// TYPE DIRECTLY.
+struct ExcessiveArg {};
+
+// A helper class needed for implementing the ACTION* macros.
+template <typename Result, class Impl>
+class ActionHelper {
+ public:
+  static Result Perform(Impl* impl, const ::std::tuple<>& args) {
+    return impl->template gmock_PerformImpl<>(args, ExcessiveArg(),
+        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
+        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
+        ExcessiveArg());
+  }
+
+  template <typename A0>
+  static Result Perform(Impl* impl, const ::std::tuple<A0>& args) {
+    return impl->template gmock_PerformImpl<A0>(args, std::get<0>(args),
+        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
+        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
+        ExcessiveArg());
+  }
+
+  template <typename A0, typename A1>
+  static Result Perform(Impl* impl, const ::std::tuple<A0, A1>& args) {
+    return impl->template gmock_PerformImpl<A0, A1>(args, std::get<0>(args),
+        std::get<1>(args), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
+        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
+        ExcessiveArg());
+  }
+
+  template <typename A0, typename A1, typename A2>
+  static Result Perform(Impl* impl, const ::std::tuple<A0, A1, A2>& args) {
+    return impl->template gmock_PerformImpl<A0, A1, A2>(args,
+        std::get<0>(args), std::get<1>(args), std::get<2>(args),
+        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
+        ExcessiveArg(), ExcessiveArg(), ExcessiveArg());
+  }
+
+  template <typename A0, typename A1, typename A2, typename A3>
+  static Result Perform(Impl* impl, const ::std::tuple<A0, A1, A2, A3>& args) {
+    return impl->template gmock_PerformImpl<A0, A1, A2, A3>(args,
+        std::get<0>(args), std::get<1>(args), std::get<2>(args),
+        std::get<3>(args), ExcessiveArg(), ExcessiveArg(), ExcessiveArg(),
+        ExcessiveArg(), ExcessiveArg(), ExcessiveArg());
+  }
+
+  template <typename A0, typename A1, typename A2, typename A3, typename A4>
+  static Result Perform(Impl* impl, const ::std::tuple<A0, A1, A2, A3,
+      A4>& args) {
+    return impl->template gmock_PerformImpl<A0, A1, A2, A3, A4>(args,
+        std::get<0>(args), std::get<1>(args), std::get<2>(args),
+        std::get<3>(args), std::get<4>(args), ExcessiveArg(), ExcessiveArg(),
+        ExcessiveArg(), ExcessiveArg(), ExcessiveArg());
+  }
+
+  template <typename A0, typename A1, typename A2, typename A3, typename A4,
+      typename A5>
+  static Result Perform(Impl* impl, const ::std::tuple<A0, A1, A2, A3, A4,
+      A5>& args) {
+    return impl->template gmock_PerformImpl<A0, A1, A2, A3, A4, A5>(args,
+        std::get<0>(args), std::get<1>(args), std::get<2>(args),
+        std::get<3>(args), std::get<4>(args), std::get<5>(args),
+        ExcessiveArg(), ExcessiveArg(), ExcessiveArg(), ExcessiveArg());
+  }
+
+  template <typename A0, typename A1, typename A2, typename A3, typename A4,
+      typename A5, typename A6>
+  static Result Perform(Impl* impl, const ::std::tuple<A0, A1, A2, A3, A4, A5,
+      A6>& args) {
+    return impl->template gmock_PerformImpl<A0, A1, A2, A3, A4, A5, A6>(args,
+        std::get<0>(args), std::get<1>(args), std::get<2>(args),
+        std::get<3>(args), std::get<4>(args), std::get<5>(args),
+        std::get<6>(args), ExcessiveArg(), ExcessiveArg(), ExcessiveArg());
+  }
+
+  template <typename A0, typename A1, typename A2, typename A3, typename A4,
+      typename A5, typename A6, typename A7>
+  static Result Perform(Impl* impl, const ::std::tuple<A0, A1, A2, A3, A4, A5,
+      A6, A7>& args) {
+    return impl->template gmock_PerformImpl<A0, A1, A2, A3, A4, A5, A6,
+        A7>(args, std::get<0>(args), std::get<1>(args), std::get<2>(args),
+        std::get<3>(args), std::get<4>(args), std::get<5>(args),
+        std::get<6>(args), std::get<7>(args), ExcessiveArg(), ExcessiveArg());
+  }
+
+  template <typename A0, typename A1, typename A2, typename A3, typename A4,
+      typename A5, typename A6, typename A7, typename A8>
+  static Result Perform(Impl* impl, const ::std::tuple<A0, A1, A2, A3, A4, A5,
+      A6, A7, A8>& args) {
+    return impl->template gmock_PerformImpl<A0, A1, A2, A3, A4, A5, A6, A7,
+        A8>(args, std::get<0>(args), std::get<1>(args), std::get<2>(args),
+        std::get<3>(args), std::get<4>(args), std::get<5>(args),
+        std::get<6>(args), std::get<7>(args), std::get<8>(args),
+        ExcessiveArg());
+  }
+
+  template <typename A0, typename A1, typename A2, typename A3, typename A4,
+      typename A5, typename A6, typename A7, typename A8, typename A9>
+  static Result Perform(Impl* impl, const ::std::tuple<A0, A1, A2, A3, A4, A5,
+      A6, A7, A8, A9>& args) {
+    return impl->template gmock_PerformImpl<A0, A1, A2, A3, A4, A5, A6, A7, A8,
+        A9>(args, std::get<0>(args), std::get<1>(args), std::get<2>(args),
+        std::get<3>(args), std::get<4>(args), std::get<5>(args),
+        std::get<6>(args), std::get<7>(args), std::get<8>(args),
+        std::get<9>(args));
+  }
+};
+
+}  // namespace internal
+}  // namespace testing
+
+// The ACTION* family of macros can be used in a namespace scope to
+// define custom actions easily.  The syntax:
+//
+//   ACTION(name) { statements; }
+//
+// will define an action with the given name that executes the
+// statements.  The value returned by the statements will be used as
+// the return value of the action.  Inside the statements, you can
+// refer to the K-th (0-based) argument of the mock function by
+// 'argK', and refer to its type by 'argK_type'.  For example:
+//
+//   ACTION(IncrementArg1) {
+//     arg1_type temp = arg1;
+//     return ++(*temp);
+//   }
+//
+// allows you to write
+//
+//   ...WillOnce(IncrementArg1());
+//
+// You can also refer to the entire argument tuple and its type by
+// 'args' and 'args_type', and refer to the mock function type and its
+// return type by 'function_type' and 'return_type'.
+//
+// Note that you don't need to specify the types of the mock function
+// arguments.  However rest assured that your code is still type-safe:
+// you'll get a compiler error if *arg1 doesn't support the ++
+// operator, or if the type of ++(*arg1) isn't compatible with the
+// mock function's return type, for example.
+//
+// Sometimes you'll want to parameterize the action.   For that you can use
+// another macro:
+//
+//   ACTION_P(name, param_name) { statements; }
+//
+// For example:
+//
+//   ACTION_P(Add, n) { return arg0 + n; }
+//
+// will allow you to write:
+//
+//   ...WillOnce(Add(5));
+//
+// Note that you don't need to provide the type of the parameter
+// either.  If you need to reference the type of a parameter named
+// 'foo', you can write 'foo_type'.  For example, in the body of
+// ACTION_P(Add, n) above, you can write 'n_type' to refer to the type
+// of 'n'.
+//
+// We also provide ACTION_P2, ACTION_P3, ..., up to ACTION_P10 to support
+// multi-parameter actions.
+//
+// For the purpose of typing, you can view
+//
+//   ACTION_Pk(Foo, p1, ..., pk) { ... }
+//
+// as shorthand for
+//
+//   template <typename p1_type, ..., typename pk_type>
+//   FooActionPk<p1_type, ..., pk_type> Foo(p1_type p1, ..., pk_type pk) { ... }
+//
+// In particular, you can provide the template type arguments
+// explicitly when invoking Foo(), as in Foo<long, bool>(5, false);
+// although usually you can rely on the compiler to infer the types
+// for you automatically.  You can assign the result of expression
+// Foo(p1, ..., pk) to a variable of type FooActionPk<p1_type, ...,
+// pk_type>.  This can be useful when composing actions.
+//
+// You can also overload actions with different numbers of parameters:
+//
+//   ACTION_P(Plus, a) { ... }
+//   ACTION_P2(Plus, a, b) { ... }
+//
+// While it's tempting to always use the ACTION* macros when defining
+// a new action, you should also consider implementing ActionInterface
+// or using MakePolymorphicAction() instead, especially if you need to
+// use the action a lot.  While these approaches require more work,
+// they give you more control on the types of the mock function
+// arguments and the action parameters, which in general leads to
+// better compiler error messages that pay off in the long run.  They
+// also allow overloading actions based on parameter types (as opposed
+// to just based on the number of parameters).
+//
+// CAVEAT:
+//
+// ACTION*() can only be used in a namespace scope as templates cannot be
+// declared inside of a local class.
+// Users can, however, define any local functors (e.g. a lambda) that
+// can be used as actions.
+//
+// MORE INFORMATION:
+//
+// To learn more about using these macros, please search for 'ACTION' on
+// https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md
+
+// An internal macro needed for implementing ACTION*().
+#define GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_\
+    const args_type& args GTEST_ATTRIBUTE_UNUSED_, \
+    const arg0_type& arg0 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg1_type& arg1 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg2_type& arg2 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg3_type& arg3 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg4_type& arg4 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg5_type& arg5 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg6_type& arg6 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg7_type& arg7 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg8_type& arg8 GTEST_ATTRIBUTE_UNUSED_, \
+    const arg9_type& arg9 GTEST_ATTRIBUTE_UNUSED_
+
+// Sometimes you want to give an action explicit template parameters
+// that cannot be inferred from its value parameters.  ACTION() and
+// ACTION_P*() don't support that.  ACTION_TEMPLATE() remedies that
+// and can be viewed as an extension to ACTION() and ACTION_P*().
+//
+// The syntax:
+//
+//   ACTION_TEMPLATE(ActionName,
+//                   HAS_m_TEMPLATE_PARAMS(kind1, name1, ..., kind_m, name_m),
+//                   AND_n_VALUE_PARAMS(p1, ..., p_n)) { statements; }
+//
+// defines an action template that takes m explicit template
+// parameters and n value parameters.  name_i is the name of the i-th
+// template parameter, and kind_i specifies whether it's a typename,
+// an integral constant, or a template.  p_i is the name of the i-th
+// value parameter.
+//
+// Example:
+//
+//   // DuplicateArg<k, T>(output) converts the k-th argument of the mock
+//   // function to type T and copies it to *output.
+//   ACTION_TEMPLATE(DuplicateArg,
+//                   HAS_2_TEMPLATE_PARAMS(int, k, typename, T),
+//                   AND_1_VALUE_PARAMS(output)) {
+//     *output = T(::std::get<k>(args));
+//   }
+//   ...
+//     int n;
+//     EXPECT_CALL(mock, Foo(_, _))
+//         .WillOnce(DuplicateArg<1, unsigned char>(&n));
+//
+// To create an instance of an action template, write:
+//
+//   ActionName<t1, ..., t_m>(v1, ..., v_n)
+//
+// where the ts are the template arguments and the vs are the value
+// arguments.  The value argument types are inferred by the compiler.
+// If you want to explicitly specify the value argument types, you can
+// provide additional template arguments:
+//
+//   ActionName<t1, ..., t_m, u1, ..., u_k>(v1, ..., v_n)
+//
+// where u_i is the desired type of v_i.
+//
+// ACTION_TEMPLATE and ACTION/ACTION_P* can be overloaded on the
+// number of value parameters, but not on the number of template
+// parameters.  Without the restriction, the meaning of the following
+// is unclear:
+//
+//   OverloadedAction<int, bool>(x);
+//
+// Are we using a single-template-parameter action where 'bool' refers
+// to the type of x, or are we using a two-template-parameter action
+// where the compiler is asked to infer the type of x?
+//
+// Implementation notes:
+//
+// GMOCK_INTERNAL_*_HAS_m_TEMPLATE_PARAMS and
+// GMOCK_INTERNAL_*_AND_n_VALUE_PARAMS are internal macros for
+// implementing ACTION_TEMPLATE.  The main trick we use is to create
+// new macro invocations when expanding a macro.  For example, we have
+//
+//   #define ACTION_TEMPLATE(name, template_params, value_params)
+//       ... GMOCK_INTERNAL_DECL_##template_params ...
+//
+// which causes ACTION_TEMPLATE(..., HAS_1_TEMPLATE_PARAMS(typename, T), ...)
+// to expand to
+//
+//       ... GMOCK_INTERNAL_DECL_HAS_1_TEMPLATE_PARAMS(typename, T) ...
+//
+// Since GMOCK_INTERNAL_DECL_HAS_1_TEMPLATE_PARAMS is a macro, the
+// preprocessor will continue to expand it to
+//
+//       ... typename T ...
+//
+// This technique conforms to the C++ standard and is portable.  It
+// allows us to implement action templates using O(N) code, where N is
+// the maximum number of template/value parameters supported.  Without
+// using it, we'd have to devote O(N^2) amount of code to implement all
+// combinations of m and n.
+
+// Declares the template parameters.
+#define GMOCK_INTERNAL_DECL_HAS_1_TEMPLATE_PARAMS(kind0, name0) kind0 name0
+#define GMOCK_INTERNAL_DECL_HAS_2_TEMPLATE_PARAMS(kind0, name0, kind1, \
+    name1) kind0 name0, kind1 name1
+#define GMOCK_INTERNAL_DECL_HAS_3_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2) kind0 name0, kind1 name1, kind2 name2
+#define GMOCK_INTERNAL_DECL_HAS_4_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2, kind3, name3) kind0 name0, kind1 name1, kind2 name2, \
+    kind3 name3
+#define GMOCK_INTERNAL_DECL_HAS_5_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2, kind3, name3, kind4, name4) kind0 name0, kind1 name1, \
+    kind2 name2, kind3 name3, kind4 name4
+#define GMOCK_INTERNAL_DECL_HAS_6_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2, kind3, name3, kind4, name4, kind5, name5) kind0 name0, \
+    kind1 name1, kind2 name2, kind3 name3, kind4 name4, kind5 name5
+#define GMOCK_INTERNAL_DECL_HAS_7_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2, kind3, name3, kind4, name4, kind5, name5, kind6, \
+    name6) kind0 name0, kind1 name1, kind2 name2, kind3 name3, kind4 name4, \
+    kind5 name5, kind6 name6
+#define GMOCK_INTERNAL_DECL_HAS_8_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2, kind3, name3, kind4, name4, kind5, name5, kind6, name6, \
+    kind7, name7) kind0 name0, kind1 name1, kind2 name2, kind3 name3, \
+    kind4 name4, kind5 name5, kind6 name6, kind7 name7
+#define GMOCK_INTERNAL_DECL_HAS_9_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2, kind3, name3, kind4, name4, kind5, name5, kind6, name6, \
+    kind7, name7, kind8, name8) kind0 name0, kind1 name1, kind2 name2, \
+    kind3 name3, kind4 name4, kind5 name5, kind6 name6, kind7 name7, \
+    kind8 name8
+#define GMOCK_INTERNAL_DECL_HAS_10_TEMPLATE_PARAMS(kind0, name0, kind1, \
+    name1, kind2, name2, kind3, name3, kind4, name4, kind5, name5, kind6, \
+    name6, kind7, name7, kind8, name8, kind9, name9) kind0 name0, \
+    kind1 name1, kind2 name2, kind3 name3, kind4 name4, kind5 name5, \
+    kind6 name6, kind7 name7, kind8 name8, kind9 name9
+
+// Lists the template parameters.
+#define GMOCK_INTERNAL_LIST_HAS_1_TEMPLATE_PARAMS(kind0, name0) name0
+#define GMOCK_INTERNAL_LIST_HAS_2_TEMPLATE_PARAMS(kind0, name0, kind1, \
+    name1) name0, name1
+#define GMOCK_INTERNAL_LIST_HAS_3_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2) name0, name1, name2
+#define GMOCK_INTERNAL_LIST_HAS_4_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2, kind3, name3) name0, name1, name2, name3
+#define GMOCK_INTERNAL_LIST_HAS_5_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2, kind3, name3, kind4, name4) name0, name1, name2, name3, \
+    name4
+#define GMOCK_INTERNAL_LIST_HAS_6_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2, kind3, name3, kind4, name4, kind5, name5) name0, name1, \
+    name2, name3, name4, name5
+#define GMOCK_INTERNAL_LIST_HAS_7_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2, kind3, name3, kind4, name4, kind5, name5, kind6, \
+    name6) name0, name1, name2, name3, name4, name5, name6
+#define GMOCK_INTERNAL_LIST_HAS_8_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2, kind3, name3, kind4, name4, kind5, name5, kind6, name6, \
+    kind7, name7) name0, name1, name2, name3, name4, name5, name6, name7
+#define GMOCK_INTERNAL_LIST_HAS_9_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
+    kind2, name2, kind3, name3, kind4, name4, kind5, name5, kind6, name6, \
+    kind7, name7, kind8, name8) name0, name1, name2, name3, name4, name5, \
+    name6, name7, name8
+#define GMOCK_INTERNAL_LIST_HAS_10_TEMPLATE_PARAMS(kind0, name0, kind1, \
+    name1, kind2, name2, kind3, name3, kind4, name4, kind5, name5, kind6, \
+    name6, kind7, name7, kind8, name8, kind9, name9) name0, name1, name2, \
+    name3, name4, name5, name6, name7, name8, name9
+
+// Declares the types of value parameters.
+#define GMOCK_INTERNAL_DECL_TYPE_AND_0_VALUE_PARAMS()
+#define GMOCK_INTERNAL_DECL_TYPE_AND_1_VALUE_PARAMS(p0) , typename p0##_type
+#define GMOCK_INTERNAL_DECL_TYPE_AND_2_VALUE_PARAMS(p0, p1) , \
+    typename p0##_type, typename p1##_type
+#define GMOCK_INTERNAL_DECL_TYPE_AND_3_VALUE_PARAMS(p0, p1, p2) , \
+    typename p0##_type, typename p1##_type, typename p2##_type
+#define GMOCK_INTERNAL_DECL_TYPE_AND_4_VALUE_PARAMS(p0, p1, p2, p3) , \
+    typename p0##_type, typename p1##_type, typename p2##_type, \
+    typename p3##_type
+#define GMOCK_INTERNAL_DECL_TYPE_AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4) , \
+    typename p0##_type, typename p1##_type, typename p2##_type, \
+    typename p3##_type, typename p4##_type
+#define GMOCK_INTERNAL_DECL_TYPE_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5) , \
+    typename p0##_type, typename p1##_type, typename p2##_type, \
+    typename p3##_type, typename p4##_type, typename p5##_type
+#define GMOCK_INTERNAL_DECL_TYPE_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
+    p6) , typename p0##_type, typename p1##_type, typename p2##_type, \
+    typename p3##_type, typename p4##_type, typename p5##_type, \
+    typename p6##_type
+#define GMOCK_INTERNAL_DECL_TYPE_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
+    p6, p7) , typename p0##_type, typename p1##_type, typename p2##_type, \
+    typename p3##_type, typename p4##_type, typename p5##_type, \
+    typename p6##_type, typename p7##_type
+#define GMOCK_INTERNAL_DECL_TYPE_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
+    p6, p7, p8) , typename p0##_type, typename p1##_type, typename p2##_type, \
+    typename p3##_type, typename p4##_type, typename p5##_type, \
+    typename p6##_type, typename p7##_type, typename p8##_type
+#define GMOCK_INTERNAL_DECL_TYPE_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
+    p6, p7, p8, p9) , typename p0##_type, typename p1##_type, \
+    typename p2##_type, typename p3##_type, typename p4##_type, \
+    typename p5##_type, typename p6##_type, typename p7##_type, \
+    typename p8##_type, typename p9##_type
+
+// Initializes the value parameters.
+#define GMOCK_INTERNAL_INIT_AND_0_VALUE_PARAMS()\
+    ()
+#define GMOCK_INTERNAL_INIT_AND_1_VALUE_PARAMS(p0)\
+    (p0##_type gmock_p0) : p0(::std::move(gmock_p0))
+#define GMOCK_INTERNAL_INIT_AND_2_VALUE_PARAMS(p0, p1)\
+    (p0##_type gmock_p0, p1##_type gmock_p1) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1))
+#define GMOCK_INTERNAL_INIT_AND_3_VALUE_PARAMS(p0, p1, p2)\
+    (p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2))
+#define GMOCK_INTERNAL_INIT_AND_4_VALUE_PARAMS(p0, p1, p2, p3)\
+    (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+        p3##_type gmock_p3) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3))
+#define GMOCK_INTERNAL_INIT_AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4)\
+    (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+        p3##_type gmock_p3, p4##_type gmock_p4) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4))
+#define GMOCK_INTERNAL_INIT_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5)\
+    (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+        p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5))
+#define GMOCK_INTERNAL_INIT_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6)\
+    (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+        p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+        p6##_type gmock_p6) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6))
+#define GMOCK_INTERNAL_INIT_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7)\
+    (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+        p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+        p6##_type gmock_p6, p7##_type gmock_p7) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)), \
+        p7(::std::move(gmock_p7))
+#define GMOCK_INTERNAL_INIT_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7, p8)\
+    (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+        p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+        p6##_type gmock_p6, p7##_type gmock_p7, \
+        p8##_type gmock_p8) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)), \
+        p7(::std::move(gmock_p7)), p8(::std::move(gmock_p8))
+#define GMOCK_INTERNAL_INIT_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7, p8, p9)\
+    (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+        p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+        p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8, \
+        p9##_type gmock_p9) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)), \
+        p7(::std::move(gmock_p7)), p8(::std::move(gmock_p8)), \
+        p9(::std::move(gmock_p9))
+
+// Declares the fields for storing the value parameters.
+#define GMOCK_INTERNAL_DEFN_AND_0_VALUE_PARAMS()
+#define GMOCK_INTERNAL_DEFN_AND_1_VALUE_PARAMS(p0) p0##_type p0;
+#define GMOCK_INTERNAL_DEFN_AND_2_VALUE_PARAMS(p0, p1) p0##_type p0; \
+    p1##_type p1;
+#define GMOCK_INTERNAL_DEFN_AND_3_VALUE_PARAMS(p0, p1, p2) p0##_type p0; \
+    p1##_type p1; p2##_type p2;
+#define GMOCK_INTERNAL_DEFN_AND_4_VALUE_PARAMS(p0, p1, p2, p3) p0##_type p0; \
+    p1##_type p1; p2##_type p2; p3##_type p3;
+#define GMOCK_INTERNAL_DEFN_AND_5_VALUE_PARAMS(p0, p1, p2, p3, \
+    p4) p0##_type p0; p1##_type p1; p2##_type p2; p3##_type p3; p4##_type p4;
+#define GMOCK_INTERNAL_DEFN_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, \
+    p5) p0##_type p0; p1##_type p1; p2##_type p2; p3##_type p3; p4##_type p4; \
+    p5##_type p5;
+#define GMOCK_INTERNAL_DEFN_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
+    p6) p0##_type p0; p1##_type p1; p2##_type p2; p3##_type p3; p4##_type p4; \
+    p5##_type p5; p6##_type p6;
+#define GMOCK_INTERNAL_DEFN_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7) p0##_type p0; p1##_type p1; p2##_type p2; p3##_type p3; p4##_type p4; \
+    p5##_type p5; p6##_type p6; p7##_type p7;
+#define GMOCK_INTERNAL_DEFN_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7, p8) p0##_type p0; p1##_type p1; p2##_type p2; p3##_type p3; \
+    p4##_type p4; p5##_type p5; p6##_type p6; p7##_type p7; p8##_type p8;
+#define GMOCK_INTERNAL_DEFN_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7, p8, p9) p0##_type p0; p1##_type p1; p2##_type p2; p3##_type p3; \
+    p4##_type p4; p5##_type p5; p6##_type p6; p7##_type p7; p8##_type p8; \
+    p9##_type p9;
+
+// Lists the value parameters.
+#define GMOCK_INTERNAL_LIST_AND_0_VALUE_PARAMS()
+#define GMOCK_INTERNAL_LIST_AND_1_VALUE_PARAMS(p0) p0
+#define GMOCK_INTERNAL_LIST_AND_2_VALUE_PARAMS(p0, p1) p0, p1
+#define GMOCK_INTERNAL_LIST_AND_3_VALUE_PARAMS(p0, p1, p2) p0, p1, p2
+#define GMOCK_INTERNAL_LIST_AND_4_VALUE_PARAMS(p0, p1, p2, p3) p0, p1, p2, p3
+#define GMOCK_INTERNAL_LIST_AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4) p0, p1, \
+    p2, p3, p4
+#define GMOCK_INTERNAL_LIST_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5) p0, \
+    p1, p2, p3, p4, p5
+#define GMOCK_INTERNAL_LIST_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
+    p6) p0, p1, p2, p3, p4, p5, p6
+#define GMOCK_INTERNAL_LIST_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7) p0, p1, p2, p3, p4, p5, p6, p7
+#define GMOCK_INTERNAL_LIST_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7, p8) p0, p1, p2, p3, p4, p5, p6, p7, p8
+#define GMOCK_INTERNAL_LIST_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7, p8, p9) p0, p1, p2, p3, p4, p5, p6, p7, p8, p9
+
+// Lists the value parameter types.
+#define GMOCK_INTERNAL_LIST_TYPE_AND_0_VALUE_PARAMS()
+#define GMOCK_INTERNAL_LIST_TYPE_AND_1_VALUE_PARAMS(p0) , p0##_type
+#define GMOCK_INTERNAL_LIST_TYPE_AND_2_VALUE_PARAMS(p0, p1) , p0##_type, \
+    p1##_type
+#define GMOCK_INTERNAL_LIST_TYPE_AND_3_VALUE_PARAMS(p0, p1, p2) , p0##_type, \
+    p1##_type, p2##_type
+#define GMOCK_INTERNAL_LIST_TYPE_AND_4_VALUE_PARAMS(p0, p1, p2, p3) , \
+    p0##_type, p1##_type, p2##_type, p3##_type
+#define GMOCK_INTERNAL_LIST_TYPE_AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4) , \
+    p0##_type, p1##_type, p2##_type, p3##_type, p4##_type
+#define GMOCK_INTERNAL_LIST_TYPE_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5) , \
+    p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, p5##_type
+#define GMOCK_INTERNAL_LIST_TYPE_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
+    p6) , p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, p5##_type, \
+    p6##_type
+#define GMOCK_INTERNAL_LIST_TYPE_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
+    p6, p7) , p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+    p5##_type, p6##_type, p7##_type
+#define GMOCK_INTERNAL_LIST_TYPE_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
+    p6, p7, p8) , p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+    p5##_type, p6##_type, p7##_type, p8##_type
+#define GMOCK_INTERNAL_LIST_TYPE_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
+    p6, p7, p8, p9) , p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+    p5##_type, p6##_type, p7##_type, p8##_type, p9##_type
+
+// Declares the value parameters.
+#define GMOCK_INTERNAL_DECL_AND_0_VALUE_PARAMS()
+#define GMOCK_INTERNAL_DECL_AND_1_VALUE_PARAMS(p0) p0##_type p0
+#define GMOCK_INTERNAL_DECL_AND_2_VALUE_PARAMS(p0, p1) p0##_type p0, \
+    p1##_type p1
+#define GMOCK_INTERNAL_DECL_AND_3_VALUE_PARAMS(p0, p1, p2) p0##_type p0, \
+    p1##_type p1, p2##_type p2
+#define GMOCK_INTERNAL_DECL_AND_4_VALUE_PARAMS(p0, p1, p2, p3) p0##_type p0, \
+    p1##_type p1, p2##_type p2, p3##_type p3
+#define GMOCK_INTERNAL_DECL_AND_5_VALUE_PARAMS(p0, p1, p2, p3, \
+    p4) p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4
+#define GMOCK_INTERNAL_DECL_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, \
+    p5) p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4, \
+    p5##_type p5
+#define GMOCK_INTERNAL_DECL_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
+    p6) p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4, \
+    p5##_type p5, p6##_type p6
+#define GMOCK_INTERNAL_DECL_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7) p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4, \
+    p5##_type p5, p6##_type p6, p7##_type p7
+#define GMOCK_INTERNAL_DECL_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7, p8) p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
+    p4##_type p4, p5##_type p5, p6##_type p6, p7##_type p7, p8##_type p8
+#define GMOCK_INTERNAL_DECL_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7, p8, p9) p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
+    p4##_type p4, p5##_type p5, p6##_type p6, p7##_type p7, p8##_type p8, \
+    p9##_type p9
+
+// The suffix of the class template implementing the action template.
+#define GMOCK_INTERNAL_COUNT_AND_0_VALUE_PARAMS()
+#define GMOCK_INTERNAL_COUNT_AND_1_VALUE_PARAMS(p0) P
+#define GMOCK_INTERNAL_COUNT_AND_2_VALUE_PARAMS(p0, p1) P2
+#define GMOCK_INTERNAL_COUNT_AND_3_VALUE_PARAMS(p0, p1, p2) P3
+#define GMOCK_INTERNAL_COUNT_AND_4_VALUE_PARAMS(p0, p1, p2, p3) P4
+#define GMOCK_INTERNAL_COUNT_AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4) P5
+#define GMOCK_INTERNAL_COUNT_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5) P6
+#define GMOCK_INTERNAL_COUNT_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6) P7
+#define GMOCK_INTERNAL_COUNT_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7) P8
+#define GMOCK_INTERNAL_COUNT_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7, p8) P9
+#define GMOCK_INTERNAL_COUNT_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
+    p7, p8, p9) P10
+
+// The name of the class template implementing the action template.
+#define GMOCK_ACTION_CLASS_(name, value_params)\
+    GTEST_CONCAT_TOKEN_(name##Action, GMOCK_INTERNAL_COUNT_##value_params)
+
+#define ACTION_TEMPLATE(name, template_params, value_params)\
+  template <GMOCK_INTERNAL_DECL_##template_params\
+            GMOCK_INTERNAL_DECL_TYPE_##value_params>\
+  class GMOCK_ACTION_CLASS_(name, value_params) {\
+   public:\
+    explicit GMOCK_ACTION_CLASS_(name, value_params)\
+        GMOCK_INTERNAL_INIT_##value_params {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      explicit gmock_Impl GMOCK_INTERNAL_INIT_##value_params {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <typename arg0_type, typename arg1_type, typename arg2_type, \
+          typename arg3_type, typename arg4_type, typename arg5_type, \
+          typename arg6_type, typename arg7_type, typename arg8_type, \
+          typename arg9_type>\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
+      GMOCK_INTERNAL_DEFN_##value_params\
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(\
+          new gmock_Impl<F>(GMOCK_INTERNAL_LIST_##value_params));\
+    }\
+    GMOCK_INTERNAL_DEFN_##value_params\
+   private:\
+    GTEST_DISALLOW_ASSIGN_(GMOCK_ACTION_CLASS_(name, value_params));\
+  };\
+  template <GMOCK_INTERNAL_DECL_##template_params\
+            GMOCK_INTERNAL_DECL_TYPE_##value_params>\
+  inline GMOCK_ACTION_CLASS_(name, value_params)<\
+      GMOCK_INTERNAL_LIST_##template_params\
+      GMOCK_INTERNAL_LIST_TYPE_##value_params> name(\
+          GMOCK_INTERNAL_DECL_##value_params) {\
+    return GMOCK_ACTION_CLASS_(name, value_params)<\
+        GMOCK_INTERNAL_LIST_##template_params\
+        GMOCK_INTERNAL_LIST_TYPE_##value_params>(\
+            GMOCK_INTERNAL_LIST_##value_params);\
+  }\
+  template <GMOCK_INTERNAL_DECL_##template_params\
+            GMOCK_INTERNAL_DECL_TYPE_##value_params>\
+  template <typename F>\
+  template <typename arg0_type, typename arg1_type, typename arg2_type, \
+      typename arg3_type, typename arg4_type, typename arg5_type, \
+      typename arg6_type, typename arg7_type, typename arg8_type, \
+      typename arg9_type>\
+  typename ::testing::internal::Function<F>::Result\
+      GMOCK_ACTION_CLASS_(name, value_params)<\
+          GMOCK_INTERNAL_LIST_##template_params\
+          GMOCK_INTERNAL_LIST_TYPE_##value_params>::gmock_Impl<F>::\
+              gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+
+#define ACTION(name)\
+  class name##Action {\
+   public:\
+    name##Action() {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      gmock_Impl() {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <typename arg0_type, typename arg1_type, typename arg2_type, \
+          typename arg3_type, typename arg4_type, typename arg5_type, \
+          typename arg6_type, typename arg7_type, typename arg8_type, \
+          typename arg9_type>\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(new gmock_Impl<F>());\
+    }\
+   private:\
+    GTEST_DISALLOW_ASSIGN_(name##Action);\
+  };\
+  inline name##Action name() {\
+    return name##Action();\
+  }\
+  template <typename F>\
+  template <typename arg0_type, typename arg1_type, typename arg2_type, \
+      typename arg3_type, typename arg4_type, typename arg5_type, \
+      typename arg6_type, typename arg7_type, typename arg8_type, \
+      typename arg9_type>\
+  typename ::testing::internal::Function<F>::Result\
+      name##Action::gmock_Impl<F>::gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+
+#define ACTION_P(name, p0)\
+  template <typename p0##_type>\
+  class name##ActionP {\
+   public:\
+    explicit name##ActionP(p0##_type gmock_p0) : \
+        p0(::std::forward<p0##_type>(gmock_p0)) {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      explicit gmock_Impl(p0##_type gmock_p0) : \
+          p0(::std::forward<p0##_type>(gmock_p0)) {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <typename arg0_type, typename arg1_type, typename arg2_type, \
+          typename arg3_type, typename arg4_type, typename arg5_type, \
+          typename arg6_type, typename arg7_type, typename arg8_type, \
+          typename arg9_type>\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
+      p0##_type p0;\
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(new gmock_Impl<F>(p0));\
+    }\
+    p0##_type p0;\
+   private:\
+    GTEST_DISALLOW_ASSIGN_(name##ActionP);\
+  };\
+  template <typename p0##_type>\
+  inline name##ActionP<p0##_type> name(p0##_type p0) {\
+    return name##ActionP<p0##_type>(p0);\
+  }\
+  template <typename p0##_type>\
+  template <typename F>\
+  template <typename arg0_type, typename arg1_type, typename arg2_type, \
+      typename arg3_type, typename arg4_type, typename arg5_type, \
+      typename arg6_type, typename arg7_type, typename arg8_type, \
+      typename arg9_type>\
+  typename ::testing::internal::Function<F>::Result\
+      name##ActionP<p0##_type>::gmock_Impl<F>::gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+
+#define ACTION_P2(name, p0, p1)\
+  template <typename p0##_type, typename p1##_type>\
+  class name##ActionP2 {\
+   public:\
+    name##ActionP2(p0##_type gmock_p0, \
+        p1##_type gmock_p1) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)) {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      gmock_Impl(p0##_type gmock_p0, \
+          p1##_type gmock_p1) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)) {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <typename arg0_type, typename arg1_type, typename arg2_type, \
+          typename arg3_type, typename arg4_type, typename arg5_type, \
+          typename arg6_type, typename arg7_type, typename arg8_type, \
+          typename arg9_type>\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
+      p0##_type p0;\
+      p1##_type p1;\
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(new gmock_Impl<F>(p0, p1));\
+    }\
+    p0##_type p0;\
+    p1##_type p1;\
+   private:\
+    GTEST_DISALLOW_ASSIGN_(name##ActionP2);\
+  };\
+  template <typename p0##_type, typename p1##_type>\
+  inline name##ActionP2<p0##_type, p1##_type> name(p0##_type p0, \
+      p1##_type p1) {\
+    return name##ActionP2<p0##_type, p1##_type>(p0, p1);\
+  }\
+  template <typename p0##_type, typename p1##_type>\
+  template <typename F>\
+  template <typename arg0_type, typename arg1_type, typename arg2_type, \
+      typename arg3_type, typename arg4_type, typename arg5_type, \
+      typename arg6_type, typename arg7_type, typename arg8_type, \
+      typename arg9_type>\
+  typename ::testing::internal::Function<F>::Result\
+      name##ActionP2<p0##_type, p1##_type>::gmock_Impl<F>::gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+
+#define ACTION_P3(name, p0, p1, p2)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type>\
+  class name##ActionP3 {\
+   public:\
+    name##ActionP3(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)) {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, \
+          p2##_type gmock_p2) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)) {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <typename arg0_type, typename arg1_type, typename arg2_type, \
+          typename arg3_type, typename arg4_type, typename arg5_type, \
+          typename arg6_type, typename arg7_type, typename arg8_type, \
+          typename arg9_type>\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
+      p0##_type p0;\
+      p1##_type p1;\
+      p2##_type p2;\
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(new gmock_Impl<F>(p0, p1, p2));\
+    }\
+    p0##_type p0;\
+    p1##_type p1;\
+    p2##_type p2;\
+   private:\
+    GTEST_DISALLOW_ASSIGN_(name##ActionP3);\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type>\
+  inline name##ActionP3<p0##_type, p1##_type, p2##_type> name(p0##_type p0, \
+      p1##_type p1, p2##_type p2) {\
+    return name##ActionP3<p0##_type, p1##_type, p2##_type>(p0, p1, p2);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type>\
+  template <typename F>\
+  template <typename arg0_type, typename arg1_type, typename arg2_type, \
+      typename arg3_type, typename arg4_type, typename arg5_type, \
+      typename arg6_type, typename arg7_type, typename arg8_type, \
+      typename arg9_type>\
+  typename ::testing::internal::Function<F>::Result\
+      name##ActionP3<p0##_type, p1##_type, \
+          p2##_type>::gmock_Impl<F>::gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+
+#define ACTION_P4(name, p0, p1, p2, p3)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type>\
+  class name##ActionP4 {\
+   public:\
+    name##ActionP4(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, \
+        p3##_type gmock_p3) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)) {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)) {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <typename arg0_type, typename arg1_type, typename arg2_type, \
+          typename arg3_type, typename arg4_type, typename arg5_type, \
+          typename arg6_type, typename arg7_type, typename arg8_type, \
+          typename arg9_type>\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
+      p0##_type p0;\
+      p1##_type p1;\
+      p2##_type p2;\
+      p3##_type p3;\
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(new gmock_Impl<F>(p0, p1, p2, p3));\
+    }\
+    p0##_type p0;\
+    p1##_type p1;\
+    p2##_type p2;\
+    p3##_type p3;\
+   private:\
+    GTEST_DISALLOW_ASSIGN_(name##ActionP4);\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type>\
+  inline name##ActionP4<p0##_type, p1##_type, p2##_type, \
+      p3##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, \
+      p3##_type p3) {\
+    return name##ActionP4<p0##_type, p1##_type, p2##_type, p3##_type>(p0, p1, \
+        p2, p3);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type>\
+  template <typename F>\
+  template <typename arg0_type, typename arg1_type, typename arg2_type, \
+      typename arg3_type, typename arg4_type, typename arg5_type, \
+      typename arg6_type, typename arg7_type, typename arg8_type, \
+      typename arg9_type>\
+  typename ::testing::internal::Function<F>::Result\
+      name##ActionP4<p0##_type, p1##_type, p2##_type, \
+          p3##_type>::gmock_Impl<F>::gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+
+#define ACTION_P5(name, p0, p1, p2, p3, p4)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type>\
+  class name##ActionP5 {\
+   public:\
+    name##ActionP5(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, \
+        p4##_type gmock_p4) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)), \
+        p4(::std::forward<p4##_type>(gmock_p4)) {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, \
+          p4##_type gmock_p4) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)), \
+          p4(::std::forward<p4##_type>(gmock_p4)) {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <typename arg0_type, typename arg1_type, typename arg2_type, \
+          typename arg3_type, typename arg4_type, typename arg5_type, \
+          typename arg6_type, typename arg7_type, typename arg8_type, \
+          typename arg9_type>\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
+      p0##_type p0;\
+      p1##_type p1;\
+      p2##_type p2;\
+      p3##_type p3;\
+      p4##_type p4;\
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(new gmock_Impl<F>(p0, p1, p2, p3, p4));\
+    }\
+    p0##_type p0;\
+    p1##_type p1;\
+    p2##_type p2;\
+    p3##_type p3;\
+    p4##_type p4;\
+   private:\
+    GTEST_DISALLOW_ASSIGN_(name##ActionP5);\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type>\
+  inline name##ActionP5<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
+      p4##_type p4) {\
+    return name##ActionP5<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type>(p0, p1, p2, p3, p4);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type>\
+  template <typename F>\
+  template <typename arg0_type, typename arg1_type, typename arg2_type, \
+      typename arg3_type, typename arg4_type, typename arg5_type, \
+      typename arg6_type, typename arg7_type, typename arg8_type, \
+      typename arg9_type>\
+  typename ::testing::internal::Function<F>::Result\
+      name##ActionP5<p0##_type, p1##_type, p2##_type, p3##_type, \
+          p4##_type>::gmock_Impl<F>::gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+
+#define ACTION_P6(name, p0, p1, p2, p3, p4, p5)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type>\
+  class name##ActionP6 {\
+   public:\
+    name##ActionP6(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)), \
+        p4(::std::forward<p4##_type>(gmock_p4)), \
+        p5(::std::forward<p5##_type>(gmock_p5)) {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, \
+          p5##_type gmock_p5) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)), \
+          p4(::std::forward<p4##_type>(gmock_p4)), \
+          p5(::std::forward<p5##_type>(gmock_p5)) {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <typename arg0_type, typename arg1_type, typename arg2_type, \
+          typename arg3_type, typename arg4_type, typename arg5_type, \
+          typename arg6_type, typename arg7_type, typename arg8_type, \
+          typename arg9_type>\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
+      p0##_type p0;\
+      p1##_type p1;\
+      p2##_type p2;\
+      p3##_type p3;\
+      p4##_type p4;\
+      p5##_type p5;\
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(new gmock_Impl<F>(p0, p1, p2, p3, p4, p5));\
+    }\
+    p0##_type p0;\
+    p1##_type p1;\
+    p2##_type p2;\
+    p3##_type p3;\
+    p4##_type p4;\
+    p5##_type p5;\
+   private:\
+    GTEST_DISALLOW_ASSIGN_(name##ActionP6);\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type>\
+  inline name##ActionP6<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, \
+      p3##_type p3, p4##_type p4, p5##_type p5) {\
+    return name##ActionP6<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type>(p0, p1, p2, p3, p4, p5);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type>\
+  template <typename F>\
+  template <typename arg0_type, typename arg1_type, typename arg2_type, \
+      typename arg3_type, typename arg4_type, typename arg5_type, \
+      typename arg6_type, typename arg7_type, typename arg8_type, \
+      typename arg9_type>\
+  typename ::testing::internal::Function<F>::Result\
+      name##ActionP6<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+          p5##_type>::gmock_Impl<F>::gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+
+#define ACTION_P7(name, p0, p1, p2, p3, p4, p5, p6)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type>\
+  class name##ActionP7 {\
+   public:\
+    name##ActionP7(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5, \
+        p6##_type gmock_p6) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)), \
+        p4(::std::forward<p4##_type>(gmock_p4)), \
+        p5(::std::forward<p5##_type>(gmock_p5)), \
+        p6(::std::forward<p6##_type>(gmock_p6)) {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+          p6##_type gmock_p6) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)), \
+          p4(::std::forward<p4##_type>(gmock_p4)), \
+          p5(::std::forward<p5##_type>(gmock_p5)), \
+          p6(::std::forward<p6##_type>(gmock_p6)) {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <typename arg0_type, typename arg1_type, typename arg2_type, \
+          typename arg3_type, typename arg4_type, typename arg5_type, \
+          typename arg6_type, typename arg7_type, typename arg8_type, \
+          typename arg9_type>\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
+      p0##_type p0;\
+      p1##_type p1;\
+      p2##_type p2;\
+      p3##_type p3;\
+      p4##_type p4;\
+      p5##_type p5;\
+      p6##_type p6;\
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(new gmock_Impl<F>(p0, p1, p2, p3, p4, p5, \
+          p6));\
+    }\
+    p0##_type p0;\
+    p1##_type p1;\
+    p2##_type p2;\
+    p3##_type p3;\
+    p4##_type p4;\
+    p5##_type p5;\
+    p6##_type p6;\
+   private:\
+    GTEST_DISALLOW_ASSIGN_(name##ActionP7);\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type>\
+  inline name##ActionP7<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type> name(p0##_type p0, p1##_type p1, \
+      p2##_type p2, p3##_type p3, p4##_type p4, p5##_type p5, \
+      p6##_type p6) {\
+    return name##ActionP7<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type, p6##_type>(p0, p1, p2, p3, p4, p5, p6);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type>\
+  template <typename F>\
+  template <typename arg0_type, typename arg1_type, typename arg2_type, \
+      typename arg3_type, typename arg4_type, typename arg5_type, \
+      typename arg6_type, typename arg7_type, typename arg8_type, \
+      typename arg9_type>\
+  typename ::testing::internal::Function<F>::Result\
+      name##ActionP7<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+          p5##_type, p6##_type>::gmock_Impl<F>::gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+
+#define ACTION_P8(name, p0, p1, p2, p3, p4, p5, p6, p7)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type>\
+  class name##ActionP8 {\
+   public:\
+    name##ActionP8(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5, p6##_type gmock_p6, \
+        p7##_type gmock_p7) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)), \
+        p4(::std::forward<p4##_type>(gmock_p4)), \
+        p5(::std::forward<p5##_type>(gmock_p5)), \
+        p6(::std::forward<p6##_type>(gmock_p6)), \
+        p7(::std::forward<p7##_type>(gmock_p7)) {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+          p6##_type gmock_p6, \
+          p7##_type gmock_p7) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)), \
+          p4(::std::forward<p4##_type>(gmock_p4)), \
+          p5(::std::forward<p5##_type>(gmock_p5)), \
+          p6(::std::forward<p6##_type>(gmock_p6)), \
+          p7(::std::forward<p7##_type>(gmock_p7)) {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <typename arg0_type, typename arg1_type, typename arg2_type, \
+          typename arg3_type, typename arg4_type, typename arg5_type, \
+          typename arg6_type, typename arg7_type, typename arg8_type, \
+          typename arg9_type>\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
+      p0##_type p0;\
+      p1##_type p1;\
+      p2##_type p2;\
+      p3##_type p3;\
+      p4##_type p4;\
+      p5##_type p5;\
+      p6##_type p6;\
+      p7##_type p7;\
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(new gmock_Impl<F>(p0, p1, p2, p3, p4, p5, \
+          p6, p7));\
+    }\
+    p0##_type p0;\
+    p1##_type p1;\
+    p2##_type p2;\
+    p3##_type p3;\
+    p4##_type p4;\
+    p5##_type p5;\
+    p6##_type p6;\
+    p7##_type p7;\
+   private:\
+    GTEST_DISALLOW_ASSIGN_(name##ActionP8);\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type>\
+  inline name##ActionP8<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type, p7##_type> name(p0##_type p0, \
+      p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4, p5##_type p5, \
+      p6##_type p6, p7##_type p7) {\
+    return name##ActionP8<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type, p6##_type, p7##_type>(p0, p1, p2, p3, p4, p5, \
+        p6, p7);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type>\
+  template <typename F>\
+  template <typename arg0_type, typename arg1_type, typename arg2_type, \
+      typename arg3_type, typename arg4_type, typename arg5_type, \
+      typename arg6_type, typename arg7_type, typename arg8_type, \
+      typename arg9_type>\
+  typename ::testing::internal::Function<F>::Result\
+      name##ActionP8<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+          p5##_type, p6##_type, \
+          p7##_type>::gmock_Impl<F>::gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+
+#define ACTION_P9(name, p0, p1, p2, p3, p4, p5, p6, p7, p8)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type>\
+  class name##ActionP9 {\
+   public:\
+    name##ActionP9(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5, p6##_type gmock_p6, p7##_type gmock_p7, \
+        p8##_type gmock_p8) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)), \
+        p4(::std::forward<p4##_type>(gmock_p4)), \
+        p5(::std::forward<p5##_type>(gmock_p5)), \
+        p6(::std::forward<p6##_type>(gmock_p6)), \
+        p7(::std::forward<p7##_type>(gmock_p7)), \
+        p8(::std::forward<p8##_type>(gmock_p8)) {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+          p6##_type gmock_p6, p7##_type gmock_p7, \
+          p8##_type gmock_p8) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)), \
+          p4(::std::forward<p4##_type>(gmock_p4)), \
+          p5(::std::forward<p5##_type>(gmock_p5)), \
+          p6(::std::forward<p6##_type>(gmock_p6)), \
+          p7(::std::forward<p7##_type>(gmock_p7)), \
+          p8(::std::forward<p8##_type>(gmock_p8)) {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <typename arg0_type, typename arg1_type, typename arg2_type, \
+          typename arg3_type, typename arg4_type, typename arg5_type, \
+          typename arg6_type, typename arg7_type, typename arg8_type, \
+          typename arg9_type>\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
+      p0##_type p0;\
+      p1##_type p1;\
+      p2##_type p2;\
+      p3##_type p3;\
+      p4##_type p4;\
+      p5##_type p5;\
+      p6##_type p6;\
+      p7##_type p7;\
+      p8##_type p8;\
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(new gmock_Impl<F>(p0, p1, p2, p3, p4, p5, \
+          p6, p7, p8));\
+    }\
+    p0##_type p0;\
+    p1##_type p1;\
+    p2##_type p2;\
+    p3##_type p3;\
+    p4##_type p4;\
+    p5##_type p5;\
+    p6##_type p6;\
+    p7##_type p7;\
+    p8##_type p8;\
+   private:\
+    GTEST_DISALLOW_ASSIGN_(name##ActionP9);\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type>\
+  inline name##ActionP9<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type, p7##_type, \
+      p8##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
+      p4##_type p4, p5##_type p5, p6##_type p6, p7##_type p7, \
+      p8##_type p8) {\
+    return name##ActionP9<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type, p6##_type, p7##_type, p8##_type>(p0, p1, p2, \
+        p3, p4, p5, p6, p7, p8);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type>\
+  template <typename F>\
+  template <typename arg0_type, typename arg1_type, typename arg2_type, \
+      typename arg3_type, typename arg4_type, typename arg5_type, \
+      typename arg6_type, typename arg7_type, typename arg8_type, \
+      typename arg9_type>\
+  typename ::testing::internal::Function<F>::Result\
+      name##ActionP9<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+          p5##_type, p6##_type, p7##_type, \
+          p8##_type>::gmock_Impl<F>::gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+
+#define ACTION_P10(name, p0, p1, p2, p3, p4, p5, p6, p7, p8, p9)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type, \
+      typename p9##_type>\
+  class name##ActionP10 {\
+   public:\
+    name##ActionP10(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5, p6##_type gmock_p6, p7##_type gmock_p7, \
+        p8##_type gmock_p8, \
+        p9##_type gmock_p9) : p0(::std::forward<p0##_type>(gmock_p0)), \
+        p1(::std::forward<p1##_type>(gmock_p1)), \
+        p2(::std::forward<p2##_type>(gmock_p2)), \
+        p3(::std::forward<p3##_type>(gmock_p3)), \
+        p4(::std::forward<p4##_type>(gmock_p4)), \
+        p5(::std::forward<p5##_type>(gmock_p5)), \
+        p6(::std::forward<p6##_type>(gmock_p6)), \
+        p7(::std::forward<p7##_type>(gmock_p7)), \
+        p8(::std::forward<p8##_type>(gmock_p8)), \
+        p9(::std::forward<p9##_type>(gmock_p9)) {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+          p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8, \
+          p9##_type gmock_p9) : p0(::std::forward<p0##_type>(gmock_p0)), \
+          p1(::std::forward<p1##_type>(gmock_p1)), \
+          p2(::std::forward<p2##_type>(gmock_p2)), \
+          p3(::std::forward<p3##_type>(gmock_p3)), \
+          p4(::std::forward<p4##_type>(gmock_p4)), \
+          p5(::std::forward<p5##_type>(gmock_p5)), \
+          p6(::std::forward<p6##_type>(gmock_p6)), \
+          p7(::std::forward<p7##_type>(gmock_p7)), \
+          p8(::std::forward<p8##_type>(gmock_p8)), \
+          p9(::std::forward<p9##_type>(gmock_p9)) {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <typename arg0_type, typename arg1_type, typename arg2_type, \
+          typename arg3_type, typename arg4_type, typename arg5_type, \
+          typename arg6_type, typename arg7_type, typename arg8_type, \
+          typename arg9_type>\
+      return_type gmock_PerformImpl(const args_type& args, \
+          const arg0_type& arg0, const arg1_type& arg1, \
+          const arg2_type& arg2, const arg3_type& arg3, \
+          const arg4_type& arg4, const arg5_type& arg5, \
+          const arg6_type& arg6, const arg7_type& arg7, \
+          const arg8_type& arg8, const arg9_type& arg9) const;\
+      p0##_type p0;\
+      p1##_type p1;\
+      p2##_type p2;\
+      p3##_type p3;\
+      p4##_type p4;\
+      p5##_type p5;\
+      p6##_type p6;\
+      p7##_type p7;\
+      p8##_type p8;\
+      p9##_type p9;\
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(new gmock_Impl<F>(p0, p1, p2, p3, p4, p5, \
+          p6, p7, p8, p9));\
+    }\
+    p0##_type p0;\
+    p1##_type p1;\
+    p2##_type p2;\
+    p3##_type p3;\
+    p4##_type p4;\
+    p5##_type p5;\
+    p6##_type p6;\
+    p7##_type p7;\
+    p8##_type p8;\
+    p9##_type p9;\
+   private:\
+    GTEST_DISALLOW_ASSIGN_(name##ActionP10);\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type, \
+      typename p9##_type>\
+  inline name##ActionP10<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, \
+      p9##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
+      p4##_type p4, p5##_type p5, p6##_type p6, p7##_type p7, p8##_type p8, \
+      p9##_type p9) {\
+    return name##ActionP10<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, p9##_type>(p0, \
+        p1, p2, p3, p4, p5, p6, p7, p8, p9);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type, \
+      typename p9##_type>\
+  template <typename F>\
+  template <typename arg0_type, typename arg1_type, typename arg2_type, \
+      typename arg3_type, typename arg4_type, typename arg5_type, \
+      typename arg6_type, typename arg7_type, typename arg8_type, \
+      typename arg9_type>\
+  typename ::testing::internal::Function<F>::Result\
+      name##ActionP10<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+          p5##_type, p6##_type, p7##_type, p8##_type, \
+          p9##_type>::gmock_Impl<F>::gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+
+namespace testing {
+
+
+// The ACTION*() macros trigger warning C4100 (unreferenced formal
+// parameter) in MSVC with -W4.  Unfortunately they cannot be fixed in
+// the macro definition, as the warnings are generated when the macro
+// is expanded and macro expansion cannot contain #pragma.  Therefore
+// we suppress them here.
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
+#endif
+
+// Various overloads for InvokeArgument<N>().
+//
+// The InvokeArgument<N>(a1, a2, ..., a_k) action invokes the N-th
+// (0-based) argument, which must be a k-ary callable, of the mock
+// function, with arguments a1, a2, ..., a_k.
+//
+// Notes:
+//
+//   1. The arguments are passed by value by default.  If you need to
+//   pass an argument by reference, wrap it inside ByRef().  For
+//   example,
+//
+//     InvokeArgument<1>(5, string("Hello"), ByRef(foo))
+//
+//   passes 5 and string("Hello") by value, and passes foo by
+//   reference.
+//
+//   2. If the callable takes an argument by reference but ByRef() is
+//   not used, it will receive the reference to a copy of the value,
+//   instead of the original value.  For example, when the 0-th
+//   argument of the mock function takes a const string&, the action
+//
+//     InvokeArgument<0>(string("Hello"))
+//
+//   makes a copy of the temporary string("Hello") object and passes a
+//   reference of the copy, instead of the original temporary object,
+//   to the callable.  This makes it easy for a user to define an
+//   InvokeArgument action from temporary values and have it performed
+//   later.
+
+namespace internal {
+namespace invoke_argument {
+
+// Appears in InvokeArgumentAdl's argument list to help avoid
+// accidental calls to user functions of the same name.
+struct AdlTag {};
+
+// InvokeArgumentAdl - a helper for InvokeArgument.
+// The basic overloads are provided here for generic functors.
+// Overloads for other custom-callables are provided in the
+// internal/custom/callback-actions.h header.
+
+template <typename R, typename F>
+R InvokeArgumentAdl(AdlTag, F f) {
+  return f();
+}
+template <typename R, typename F, typename A1>
+R InvokeArgumentAdl(AdlTag, F f, A1 a1) {
+  return f(a1);
+}
+template <typename R, typename F, typename A1, typename A2>
+R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2) {
+  return f(a1, a2);
+}
+template <typename R, typename F, typename A1, typename A2, typename A3>
+R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3) {
+  return f(a1, a2, a3);
+}
+template <typename R, typename F, typename A1, typename A2, typename A3,
+    typename A4>
+R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4) {
+  return f(a1, a2, a3, a4);
+}
+template <typename R, typename F, typename A1, typename A2, typename A3,
+    typename A4, typename A5>
+R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5) {
+  return f(a1, a2, a3, a4, a5);
+}
+template <typename R, typename F, typename A1, typename A2, typename A3,
+    typename A4, typename A5, typename A6>
+R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6) {
+  return f(a1, a2, a3, a4, a5, a6);
+}
+template <typename R, typename F, typename A1, typename A2, typename A3,
+    typename A4, typename A5, typename A6, typename A7>
+R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6,
+    A7 a7) {
+  return f(a1, a2, a3, a4, a5, a6, a7);
+}
+template <typename R, typename F, typename A1, typename A2, typename A3,
+    typename A4, typename A5, typename A6, typename A7, typename A8>
+R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6,
+    A7 a7, A8 a8) {
+  return f(a1, a2, a3, a4, a5, a6, a7, a8);
+}
+template <typename R, typename F, typename A1, typename A2, typename A3,
+    typename A4, typename A5, typename A6, typename A7, typename A8,
+    typename A9>
+R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6,
+    A7 a7, A8 a8, A9 a9) {
+  return f(a1, a2, a3, a4, a5, a6, a7, a8, a9);
+}
+template <typename R, typename F, typename A1, typename A2, typename A3,
+    typename A4, typename A5, typename A6, typename A7, typename A8,
+    typename A9, typename A10>
+R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6,
+    A7 a7, A8 a8, A9 a9, A10 a10) {
+  return f(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);
+}
+}  // namespace invoke_argument
+}  // namespace internal
+
+ACTION_TEMPLATE(InvokeArgument,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_0_VALUE_PARAMS()) {
+  using internal::invoke_argument::InvokeArgumentAdl;
+  return InvokeArgumentAdl<return_type>(
+      internal::invoke_argument::AdlTag(),
+      ::std::get<k>(args));
+}
+
+ACTION_TEMPLATE(InvokeArgument,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_1_VALUE_PARAMS(p0)) {
+  using internal::invoke_argument::InvokeArgumentAdl;
+  return InvokeArgumentAdl<return_type>(
+      internal::invoke_argument::AdlTag(),
+      ::std::get<k>(args), p0);
+}
+
+ACTION_TEMPLATE(InvokeArgument,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_2_VALUE_PARAMS(p0, p1)) {
+  using internal::invoke_argument::InvokeArgumentAdl;
+  return InvokeArgumentAdl<return_type>(
+      internal::invoke_argument::AdlTag(),
+      ::std::get<k>(args), p0, p1);
+}
+
+ACTION_TEMPLATE(InvokeArgument,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_3_VALUE_PARAMS(p0, p1, p2)) {
+  using internal::invoke_argument::InvokeArgumentAdl;
+  return InvokeArgumentAdl<return_type>(
+      internal::invoke_argument::AdlTag(),
+      ::std::get<k>(args), p0, p1, p2);
+}
+
+ACTION_TEMPLATE(InvokeArgument,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_4_VALUE_PARAMS(p0, p1, p2, p3)) {
+  using internal::invoke_argument::InvokeArgumentAdl;
+  return InvokeArgumentAdl<return_type>(
+      internal::invoke_argument::AdlTag(),
+      ::std::get<k>(args), p0, p1, p2, p3);
+}
+
+ACTION_TEMPLATE(InvokeArgument,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4)) {
+  using internal::invoke_argument::InvokeArgumentAdl;
+  return InvokeArgumentAdl<return_type>(
+      internal::invoke_argument::AdlTag(),
+      ::std::get<k>(args), p0, p1, p2, p3, p4);
+}
+
+ACTION_TEMPLATE(InvokeArgument,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5)) {
+  using internal::invoke_argument::InvokeArgumentAdl;
+  return InvokeArgumentAdl<return_type>(
+      internal::invoke_argument::AdlTag(),
+      ::std::get<k>(args), p0, p1, p2, p3, p4, p5);
+}
+
+ACTION_TEMPLATE(InvokeArgument,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6)) {
+  using internal::invoke_argument::InvokeArgumentAdl;
+  return InvokeArgumentAdl<return_type>(
+      internal::invoke_argument::AdlTag(),
+      ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6);
+}
+
+ACTION_TEMPLATE(InvokeArgument,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7)) {
+  using internal::invoke_argument::InvokeArgumentAdl;
+  return InvokeArgumentAdl<return_type>(
+      internal::invoke_argument::AdlTag(),
+      ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7);
+}
+
+ACTION_TEMPLATE(InvokeArgument,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7, p8)) {
+  using internal::invoke_argument::InvokeArgumentAdl;
+  return InvokeArgumentAdl<return_type>(
+      internal::invoke_argument::AdlTag(),
+      ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7, p8);
+}
+
+ACTION_TEMPLATE(InvokeArgument,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9)) {
+  using internal::invoke_argument::InvokeArgumentAdl;
+  return InvokeArgumentAdl<return_type>(
+      internal::invoke_argument::AdlTag(),
+      ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7, p8, p9);
+}
+
+// Various overloads for ReturnNew<T>().
+//
+// The ReturnNew<T>(a1, a2, ..., a_k) action returns a pointer to a new
+// instance of type T, constructed on the heap with constructor arguments
+// a1, a2, ..., and a_k. The caller assumes ownership of the returned value.
+ACTION_TEMPLATE(ReturnNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_0_VALUE_PARAMS()) {
+  return new T();
+}
+
+ACTION_TEMPLATE(ReturnNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_1_VALUE_PARAMS(p0)) {
+  return new T(p0);
+}
+
+ACTION_TEMPLATE(ReturnNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_2_VALUE_PARAMS(p0, p1)) {
+  return new T(p0, p1);
+}
+
+ACTION_TEMPLATE(ReturnNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_3_VALUE_PARAMS(p0, p1, p2)) {
+  return new T(p0, p1, p2);
+}
+
+ACTION_TEMPLATE(ReturnNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_4_VALUE_PARAMS(p0, p1, p2, p3)) {
+  return new T(p0, p1, p2, p3);
+}
+
+ACTION_TEMPLATE(ReturnNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4)) {
+  return new T(p0, p1, p2, p3, p4);
+}
+
+ACTION_TEMPLATE(ReturnNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5)) {
+  return new T(p0, p1, p2, p3, p4, p5);
+}
+
+ACTION_TEMPLATE(ReturnNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6)) {
+  return new T(p0, p1, p2, p3, p4, p5, p6);
+}
+
+ACTION_TEMPLATE(ReturnNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7)) {
+  return new T(p0, p1, p2, p3, p4, p5, p6, p7);
+}
+
+ACTION_TEMPLATE(ReturnNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7, p8)) {
+  return new T(p0, p1, p2, p3, p4, p5, p6, p7, p8);
+}
+
+ACTION_TEMPLATE(ReturnNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9)) {
+  return new T(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9);
+}
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+}  // namespace testing
+
+// Include any custom callback actions added by the local installation.
+// We must include this header at the end to make sure it can use the
+// declarations from this file.
+#include "gmock/internal/custom/gmock-generated-actions.h"
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-actions.h.pump b/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-actions.h.pump
new file mode 100644
index 0000000000000000000000000000000000000000..209603c5a90135ec53abae541d08243ba182e0b8
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-actions.h.pump
@@ -0,0 +1,627 @@
+$$ -*- mode: c++; -*-
+$$ This is a Pump source file. Please use Pump to convert it to
+$$ gmock-generated-actions.h.
+$$
+$var n = 10  $$ The maximum arity we support.
+$$}} This meta comment fixes auto-indentation in editors.
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements some commonly used variadic actions.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
+
+#include <memory>
+#include <utility>
+
+#include "gmock/gmock-actions.h"
+#include "gmock/internal/gmock-port.h"
+
+namespace testing {
+namespace internal {
+
+// A macro from the ACTION* family (defined later in this file)
+// defines an action that can be used in a mock function.  Typically,
+// these actions only care about a subset of the arguments of the mock
+// function.  For example, if such an action only uses the second
+// argument, it can be used in any mock function that takes >= 2
+// arguments where the type of the second argument is compatible.
+//
+// Therefore, the action implementation must be prepared to take more
+// arguments than it needs.  The ExcessiveArg type is used to
+// represent those excessive arguments.  In order to keep the compiler
+// error messages tractable, we define it in the testing namespace
+// instead of testing::internal.  However, this is an INTERNAL TYPE
+// and subject to change without notice, so a user MUST NOT USE THIS
+// TYPE DIRECTLY.
+struct ExcessiveArg {};
+
+// A helper class needed for implementing the ACTION* macros.
+template <typename Result, class Impl>
+class ActionHelper {
+ public:
+$range i 0..n
+$for i
+
+[[
+$var template = [[$if i==0 [[]] $else [[
+$range j 0..i-1
+  template <$for j, [[typename A$j]]>
+]]]]
+$range j 0..i-1
+$var As = [[$for j, [[A$j]]]]
+$var as = [[$for j, [[std::get<$j>(args)]]]]
+$range k 1..n-i
+$var eas = [[$for k, [[ExcessiveArg()]]]]
+$var arg_list = [[$if (i==0) | (i==n) [[$as$eas]] $else [[$as, $eas]]]]
+$template
+  static Result Perform(Impl* impl, const ::std::tuple<$As>& args) {
+    return impl->template gmock_PerformImpl<$As>(args, $arg_list);
+  }
+
+]]
+};
+
+}  // namespace internal
+}  // namespace testing
+
+// The ACTION* family of macros can be used in a namespace scope to
+// define custom actions easily.  The syntax:
+//
+//   ACTION(name) { statements; }
+//
+// will define an action with the given name that executes the
+// statements.  The value returned by the statements will be used as
+// the return value of the action.  Inside the statements, you can
+// refer to the K-th (0-based) argument of the mock function by
+// 'argK', and refer to its type by 'argK_type'.  For example:
+//
+//   ACTION(IncrementArg1) {
+//     arg1_type temp = arg1;
+//     return ++(*temp);
+//   }
+//
+// allows you to write
+//
+//   ...WillOnce(IncrementArg1());
+//
+// You can also refer to the entire argument tuple and its type by
+// 'args' and 'args_type', and refer to the mock function type and its
+// return type by 'function_type' and 'return_type'.
+//
+// Note that you don't need to specify the types of the mock function
+// arguments.  However rest assured that your code is still type-safe:
+// you'll get a compiler error if *arg1 doesn't support the ++
+// operator, or if the type of ++(*arg1) isn't compatible with the
+// mock function's return type, for example.
+//
+// Sometimes you'll want to parameterize the action.   For that you can use
+// another macro:
+//
+//   ACTION_P(name, param_name) { statements; }
+//
+// For example:
+//
+//   ACTION_P(Add, n) { return arg0 + n; }
+//
+// will allow you to write:
+//
+//   ...WillOnce(Add(5));
+//
+// Note that you don't need to provide the type of the parameter
+// either.  If you need to reference the type of a parameter named
+// 'foo', you can write 'foo_type'.  For example, in the body of
+// ACTION_P(Add, n) above, you can write 'n_type' to refer to the type
+// of 'n'.
+//
+// We also provide ACTION_P2, ACTION_P3, ..., up to ACTION_P$n to support
+// multi-parameter actions.
+//
+// For the purpose of typing, you can view
+//
+//   ACTION_Pk(Foo, p1, ..., pk) { ... }
+//
+// as shorthand for
+//
+//   template <typename p1_type, ..., typename pk_type>
+//   FooActionPk<p1_type, ..., pk_type> Foo(p1_type p1, ..., pk_type pk) { ... }
+//
+// In particular, you can provide the template type arguments
+// explicitly when invoking Foo(), as in Foo<long, bool>(5, false);
+// although usually you can rely on the compiler to infer the types
+// for you automatically.  You can assign the result of expression
+// Foo(p1, ..., pk) to a variable of type FooActionPk<p1_type, ...,
+// pk_type>.  This can be useful when composing actions.
+//
+// You can also overload actions with different numbers of parameters:
+//
+//   ACTION_P(Plus, a) { ... }
+//   ACTION_P2(Plus, a, b) { ... }
+//
+// While it's tempting to always use the ACTION* macros when defining
+// a new action, you should also consider implementing ActionInterface
+// or using MakePolymorphicAction() instead, especially if you need to
+// use the action a lot.  While these approaches require more work,
+// they give you more control on the types of the mock function
+// arguments and the action parameters, which in general leads to
+// better compiler error messages that pay off in the long run.  They
+// also allow overloading actions based on parameter types (as opposed
+// to just based on the number of parameters).
+//
+// CAVEAT:
+//
+// ACTION*() can only be used in a namespace scope as templates cannot be
+// declared inside of a local class.
+// Users can, however, define any local functors (e.g. a lambda) that
+// can be used as actions.
+//
+// MORE INFORMATION:
+//
+// To learn more about using these macros, please search for 'ACTION' on
+// https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md
+
+$range i 0..n
+$range k 0..n-1
+
+// An internal macro needed for implementing ACTION*().
+#define GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_\
+    const args_type& args GTEST_ATTRIBUTE_UNUSED_
+$for k [[, \
+    const arg$k[[]]_type& arg$k GTEST_ATTRIBUTE_UNUSED_]]
+
+
+// Sometimes you want to give an action explicit template parameters
+// that cannot be inferred from its value parameters.  ACTION() and
+// ACTION_P*() don't support that.  ACTION_TEMPLATE() remedies that
+// and can be viewed as an extension to ACTION() and ACTION_P*().
+//
+// The syntax:
+//
+//   ACTION_TEMPLATE(ActionName,
+//                   HAS_m_TEMPLATE_PARAMS(kind1, name1, ..., kind_m, name_m),
+//                   AND_n_VALUE_PARAMS(p1, ..., p_n)) { statements; }
+//
+// defines an action template that takes m explicit template
+// parameters and n value parameters.  name_i is the name of the i-th
+// template parameter, and kind_i specifies whether it's a typename,
+// an integral constant, or a template.  p_i is the name of the i-th
+// value parameter.
+//
+// Example:
+//
+//   // DuplicateArg<k, T>(output) converts the k-th argument of the mock
+//   // function to type T and copies it to *output.
+//   ACTION_TEMPLATE(DuplicateArg,
+//                   HAS_2_TEMPLATE_PARAMS(int, k, typename, T),
+//                   AND_1_VALUE_PARAMS(output)) {
+//     *output = T(::std::get<k>(args));
+//   }
+//   ...
+//     int n;
+//     EXPECT_CALL(mock, Foo(_, _))
+//         .WillOnce(DuplicateArg<1, unsigned char>(&n));
+//
+// To create an instance of an action template, write:
+//
+//   ActionName<t1, ..., t_m>(v1, ..., v_n)
+//
+// where the ts are the template arguments and the vs are the value
+// arguments.  The value argument types are inferred by the compiler.
+// If you want to explicitly specify the value argument types, you can
+// provide additional template arguments:
+//
+//   ActionName<t1, ..., t_m, u1, ..., u_k>(v1, ..., v_n)
+//
+// where u_i is the desired type of v_i.
+//
+// ACTION_TEMPLATE and ACTION/ACTION_P* can be overloaded on the
+// number of value parameters, but not on the number of template
+// parameters.  Without the restriction, the meaning of the following
+// is unclear:
+//
+//   OverloadedAction<int, bool>(x);
+//
+// Are we using a single-template-parameter action where 'bool' refers
+// to the type of x, or are we using a two-template-parameter action
+// where the compiler is asked to infer the type of x?
+//
+// Implementation notes:
+//
+// GMOCK_INTERNAL_*_HAS_m_TEMPLATE_PARAMS and
+// GMOCK_INTERNAL_*_AND_n_VALUE_PARAMS are internal macros for
+// implementing ACTION_TEMPLATE.  The main trick we use is to create
+// new macro invocations when expanding a macro.  For example, we have
+//
+//   #define ACTION_TEMPLATE(name, template_params, value_params)
+//       ... GMOCK_INTERNAL_DECL_##template_params ...
+//
+// which causes ACTION_TEMPLATE(..., HAS_1_TEMPLATE_PARAMS(typename, T), ...)
+// to expand to
+//
+//       ... GMOCK_INTERNAL_DECL_HAS_1_TEMPLATE_PARAMS(typename, T) ...
+//
+// Since GMOCK_INTERNAL_DECL_HAS_1_TEMPLATE_PARAMS is a macro, the
+// preprocessor will continue to expand it to
+//
+//       ... typename T ...
+//
+// This technique conforms to the C++ standard and is portable.  It
+// allows us to implement action templates using O(N) code, where N is
+// the maximum number of template/value parameters supported.  Without
+// using it, we'd have to devote O(N^2) amount of code to implement all
+// combinations of m and n.
+
+// Declares the template parameters.
+
+$range j 1..n
+$for j [[
+$range m 0..j-1
+#define GMOCK_INTERNAL_DECL_HAS_$j[[]]
+_TEMPLATE_PARAMS($for m, [[kind$m, name$m]]) $for m, [[kind$m name$m]]
+
+
+]]
+
+// Lists the template parameters.
+
+$for j [[
+$range m 0..j-1
+#define GMOCK_INTERNAL_LIST_HAS_$j[[]]
+_TEMPLATE_PARAMS($for m, [[kind$m, name$m]]) $for m, [[name$m]]
+
+
+]]
+
+// Declares the types of value parameters.
+
+$for i [[
+$range j 0..i-1
+#define GMOCK_INTERNAL_DECL_TYPE_AND_$i[[]]
+_VALUE_PARAMS($for j, [[p$j]]) $for j [[, typename p$j##_type]]
+
+
+]]
+
+// Initializes the value parameters.
+
+$for i [[
+$range j 0..i-1
+#define GMOCK_INTERNAL_INIT_AND_$i[[]]_VALUE_PARAMS($for j, [[p$j]])\
+    ($for j, [[p$j##_type gmock_p$j]])$if i>0 [[ : ]]$for j, [[p$j(::std::move(gmock_p$j))]]
+
+
+]]
+
+// Declares the fields for storing the value parameters.
+
+$for i [[
+$range j 0..i-1
+#define GMOCK_INTERNAL_DEFN_AND_$i[[]]
+_VALUE_PARAMS($for j, [[p$j]]) $for j [[p$j##_type p$j; ]]
+
+
+]]
+
+// Lists the value parameters.
+
+$for i [[
+$range j 0..i-1
+#define GMOCK_INTERNAL_LIST_AND_$i[[]]
+_VALUE_PARAMS($for j, [[p$j]]) $for j, [[p$j]]
+
+
+]]
+
+// Lists the value parameter types.
+
+$for i [[
+$range j 0..i-1
+#define GMOCK_INTERNAL_LIST_TYPE_AND_$i[[]]
+_VALUE_PARAMS($for j, [[p$j]]) $for j [[, p$j##_type]]
+
+
+]]
+
+// Declares the value parameters.
+
+$for i [[
+$range j 0..i-1
+#define GMOCK_INTERNAL_DECL_AND_$i[[]]_VALUE_PARAMS($for j, [[p$j]]) [[]]
+$for j, [[p$j##_type p$j]]
+
+
+]]
+
+// The suffix of the class template implementing the action template.
+$for i [[
+
+
+$range j 0..i-1
+#define GMOCK_INTERNAL_COUNT_AND_$i[[]]_VALUE_PARAMS($for j, [[p$j]]) [[]]
+$if i==1 [[P]] $elif i>=2 [[P$i]]
+]]
+
+
+// The name of the class template implementing the action template.
+#define GMOCK_ACTION_CLASS_(name, value_params)\
+    GTEST_CONCAT_TOKEN_(name##Action, GMOCK_INTERNAL_COUNT_##value_params)
+
+$range k 0..n-1
+
+#define ACTION_TEMPLATE(name, template_params, value_params)\
+  template <GMOCK_INTERNAL_DECL_##template_params\
+            GMOCK_INTERNAL_DECL_TYPE_##value_params>\
+  class GMOCK_ACTION_CLASS_(name, value_params) {\
+   public:\
+    explicit GMOCK_ACTION_CLASS_(name, value_params)\
+        GMOCK_INTERNAL_INIT_##value_params {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      explicit gmock_Impl GMOCK_INTERNAL_INIT_##value_params {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <$for k, [[typename arg$k[[]]_type]]>\
+      return_type gmock_PerformImpl(const args_type& args[[]]
+$for k [[, const arg$k[[]]_type& arg$k]]) const;\
+      GMOCK_INTERNAL_DEFN_##value_params\
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(\
+          new gmock_Impl<F>(GMOCK_INTERNAL_LIST_##value_params));\
+    }\
+    GMOCK_INTERNAL_DEFN_##value_params\
+   private:\
+    GTEST_DISALLOW_ASSIGN_(GMOCK_ACTION_CLASS_(name, value_params));\
+  };\
+  template <GMOCK_INTERNAL_DECL_##template_params\
+            GMOCK_INTERNAL_DECL_TYPE_##value_params>\
+  inline GMOCK_ACTION_CLASS_(name, value_params)<\
+      GMOCK_INTERNAL_LIST_##template_params\
+      GMOCK_INTERNAL_LIST_TYPE_##value_params> name(\
+          GMOCK_INTERNAL_DECL_##value_params) {\
+    return GMOCK_ACTION_CLASS_(name, value_params)<\
+        GMOCK_INTERNAL_LIST_##template_params\
+        GMOCK_INTERNAL_LIST_TYPE_##value_params>(\
+            GMOCK_INTERNAL_LIST_##value_params);\
+  }\
+  template <GMOCK_INTERNAL_DECL_##template_params\
+            GMOCK_INTERNAL_DECL_TYPE_##value_params>\
+  template <typename F>\
+  template <typename arg0_type, typename arg1_type, typename arg2_type, \
+      typename arg3_type, typename arg4_type, typename arg5_type, \
+      typename arg6_type, typename arg7_type, typename arg8_type, \
+      typename arg9_type>\
+  typename ::testing::internal::Function<F>::Result\
+      GMOCK_ACTION_CLASS_(name, value_params)<\
+          GMOCK_INTERNAL_LIST_##template_params\
+          GMOCK_INTERNAL_LIST_TYPE_##value_params>::gmock_Impl<F>::\
+              gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+
+$for i
+
+[[
+$var template = [[$if i==0 [[]] $else [[
+$range j 0..i-1
+
+  template <$for j, [[typename p$j##_type]]>\
+]]]]
+$var class_name = [[name##Action[[$if i==0 [[]] $elif i==1 [[P]]
+                                                $else [[P$i]]]]]]
+$range j 0..i-1
+$var ctor_param_list = [[$for j, [[p$j##_type gmock_p$j]]]]
+$var param_types_and_names = [[$for j, [[p$j##_type p$j]]]]
+$var inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(::std::forward<p$j##_type>(gmock_p$j))]]]]]]
+$var param_field_decls = [[$for j
+[[
+
+      p$j##_type p$j;\
+]]]]
+$var param_field_decls2 = [[$for j
+[[
+
+    p$j##_type p$j;\
+]]]]
+$var params = [[$for j, [[p$j]]]]
+$var param_types = [[$if i==0 [[]] $else [[<$for j, [[p$j##_type]]>]]]]
+$var typename_arg_types = [[$for k, [[typename arg$k[[]]_type]]]]
+$var arg_types_and_names = [[$for k, [[const arg$k[[]]_type& arg$k]]]]
+$var macro_name = [[$if i==0 [[ACTION]] $elif i==1 [[ACTION_P]]
+                                        $else [[ACTION_P$i]]]]
+
+#define $macro_name(name$for j [[, p$j]])\$template
+  class $class_name {\
+   public:\
+    [[$if i==1 [[explicit ]]]]$class_name($ctor_param_list)$inits {}\
+    template <typename F>\
+    class gmock_Impl : public ::testing::ActionInterface<F> {\
+     public:\
+      typedef F function_type;\
+      typedef typename ::testing::internal::Function<F>::Result return_type;\
+      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+          args_type;\
+      [[$if i==1 [[explicit ]]]]gmock_Impl($ctor_param_list)$inits {}\
+      virtual return_type Perform(const args_type& args) {\
+        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+            Perform(this, args);\
+      }\
+      template <$typename_arg_types>\
+      return_type gmock_PerformImpl(const args_type& args, [[]]
+$arg_types_and_names) const;\$param_field_decls
+     private:\
+      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
+    };\
+    template <typename F> operator ::testing::Action<F>() const {\
+      return ::testing::Action<F>(new gmock_Impl<F>($params));\
+    }\$param_field_decls2
+   private:\
+    GTEST_DISALLOW_ASSIGN_($class_name);\
+  };\$template
+  inline $class_name$param_types name($param_types_and_names) {\
+    return $class_name$param_types($params);\
+  }\$template
+  template <typename F>\
+  template <$typename_arg_types>\
+  typename ::testing::internal::Function<F>::Result\
+      $class_name$param_types::gmock_Impl<F>::gmock_PerformImpl(\
+          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
+]]
+$$ }  // This meta comment fixes auto-indentation in Emacs.  It won't
+$$    // show up in the generated code.
+
+
+namespace testing {
+
+
+// The ACTION*() macros trigger warning C4100 (unreferenced formal
+// parameter) in MSVC with -W4.  Unfortunately they cannot be fixed in
+// the macro definition, as the warnings are generated when the macro
+// is expanded and macro expansion cannot contain #pragma.  Therefore
+// we suppress them here.
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
+#endif
+
+// Various overloads for InvokeArgument<N>().
+//
+// The InvokeArgument<N>(a1, a2, ..., a_k) action invokes the N-th
+// (0-based) argument, which must be a k-ary callable, of the mock
+// function, with arguments a1, a2, ..., a_k.
+//
+// Notes:
+//
+//   1. The arguments are passed by value by default.  If you need to
+//   pass an argument by reference, wrap it inside ByRef().  For
+//   example,
+//
+//     InvokeArgument<1>(5, string("Hello"), ByRef(foo))
+//
+//   passes 5 and string("Hello") by value, and passes foo by
+//   reference.
+//
+//   2. If the callable takes an argument by reference but ByRef() is
+//   not used, it will receive the reference to a copy of the value,
+//   instead of the original value.  For example, when the 0-th
+//   argument of the mock function takes a const string&, the action
+//
+//     InvokeArgument<0>(string("Hello"))
+//
+//   makes a copy of the temporary string("Hello") object and passes a
+//   reference of the copy, instead of the original temporary object,
+//   to the callable.  This makes it easy for a user to define an
+//   InvokeArgument action from temporary values and have it performed
+//   later.
+
+namespace internal {
+namespace invoke_argument {
+
+// Appears in InvokeArgumentAdl's argument list to help avoid
+// accidental calls to user functions of the same name.
+struct AdlTag {};
+
+// InvokeArgumentAdl - a helper for InvokeArgument.
+// The basic overloads are provided here for generic functors.
+// Overloads for other custom-callables are provided in the
+// internal/custom/callback-actions.h header.
+
+$range i 0..n
+$for i
+[[
+$range j 1..i
+
+template <typename R, typename F[[$for j [[, typename A$j]]]]>
+R InvokeArgumentAdl(AdlTag, F f[[$for j [[, A$j a$j]]]]) {
+  return f([[$for j, [[a$j]]]]);
+}
+]]
+
+}  // namespace invoke_argument
+}  // namespace internal
+
+$range i 0..n
+$for i [[
+$range j 0..i-1
+
+ACTION_TEMPLATE(InvokeArgument,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_$i[[]]_VALUE_PARAMS($for j, [[p$j]])) {
+  using internal::invoke_argument::InvokeArgumentAdl;
+  return InvokeArgumentAdl<return_type>(
+      internal::invoke_argument::AdlTag(),
+      ::std::get<k>(args)$for j [[, p$j]]);
+}
+
+]]
+
+// Various overloads for ReturnNew<T>().
+//
+// The ReturnNew<T>(a1, a2, ..., a_k) action returns a pointer to a new
+// instance of type T, constructed on the heap with constructor arguments
+// a1, a2, ..., and a_k. The caller assumes ownership of the returned value.
+$range i 0..n
+$for i [[
+$range j 0..i-1
+$var ps = [[$for j, [[p$j]]]]
+
+ACTION_TEMPLATE(ReturnNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_$i[[]]_VALUE_PARAMS($ps)) {
+  return new T($ps);
+}
+
+]]
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+}  // namespace testing
+
+// Include any custom callback actions added by the local installation.
+// We must include this header at the end to make sure it can use the
+// declarations from this file.
+#include "gmock/internal/custom/gmock-generated-actions.h"
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-function-mockers.h b/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-function-mockers.h
new file mode 100644
index 0000000000000000000000000000000000000000..cd9578178c00e03f815133514717f71a04b5ce92
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-function-mockers.h
@@ -0,0 +1,752 @@
+// This file was GENERATED by command:
+//     pump.py gmock-generated-function-mockers.h.pump
+// DO NOT EDIT BY HAND!!!
+
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements function mockers of various arities.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
+
+#include <functional>
+#include <utility>
+
+#include "gmock/gmock-spec-builders.h"
+#include "gmock/internal/gmock-internal-utils.h"
+
+namespace testing {
+namespace internal {
+// Removes the given pointer; this is a helper for the expectation setter method
+// for parameterless matchers.
+//
+// We want to make sure that the user cannot set a parameterless expectation on
+// overloaded methods, including methods which are overloaded on const. Example:
+//
+//   class MockClass {
+//     MOCK_METHOD0(GetName, string&());
+//     MOCK_CONST_METHOD0(GetName, const string&());
+//   };
+//
+//   TEST() {
+//     // This should be an error, as it's not clear which overload is expected.
+//     EXPECT_CALL(mock, GetName).WillOnce(ReturnRef(value));
+//   }
+//
+// Here are the generated expectation-setter methods:
+//
+//   class MockClass {
+//     // Overload 1
+//     MockSpec<string&()> gmock_GetName() { ... }
+//     // Overload 2. Declared const so that the compiler will generate an
+//     // error when trying to resolve between this and overload 4 in
+//     // 'gmock_GetName(WithoutMatchers(), nullptr)'.
+//     MockSpec<string&()> gmock_GetName(
+//         const WithoutMatchers&, const Function<string&()>*) const {
+//       // Removes const from this, calls overload 1
+//       return AdjustConstness_(this)->gmock_GetName();
+//     }
+//
+//     // Overload 3
+//     const string& gmock_GetName() const { ... }
+//     // Overload 4
+//     MockSpec<const string&()> gmock_GetName(
+//         const WithoutMatchers&, const Function<const string&()>*) const {
+//       // Does not remove const, calls overload 3
+//       return AdjustConstness_const(this)->gmock_GetName();
+//     }
+//   }
+//
+template <typename MockType>
+const MockType* AdjustConstness_const(const MockType* mock) {
+  return mock;
+}
+
+// Removes const from and returns the given pointer; this is a helper for the
+// expectation setter method for parameterless matchers.
+template <typename MockType>
+MockType* AdjustConstness_(const MockType* mock) {
+  return const_cast<MockType*>(mock);
+}
+
+}  // namespace internal
+
+// The style guide prohibits "using" statements in a namespace scope
+// inside a header file.  However, the FunctionMocker class template
+// is meant to be defined in the ::testing namespace.  The following
+// line is just a trick for working around a bug in MSVC 8.0, which
+// cannot handle it if we define FunctionMocker in ::testing.
+using internal::FunctionMocker;
+
+// GMOCK_RESULT_(tn, F) expands to the result type of function type F.
+// We define this as a variadic macro in case F contains unprotected
+// commas (the same reason that we use variadic macros in other places
+// in this file).
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_RESULT_(tn, ...) \
+    tn ::testing::internal::Function<__VA_ARGS__>::Result
+
+// The type of argument N of the given function type.
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_ARG_(tn, N, ...) \
+    tn ::testing::internal::Function<__VA_ARGS__>::template Arg<N-1>::type
+
+// The matcher type for argument N of the given function type.
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_MATCHER_(tn, N, ...) \
+    const ::testing::Matcher<GMOCK_ARG_(tn, N, __VA_ARGS__)>&
+
+// The variable for mocking the given method.
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_MOCKER_(arity, constness, Method) \
+    GTEST_CONCAT_TOKEN_(gmock##constness##arity##_##Method##_, __LINE__)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD0_(tn, constness, ct, Method, ...) \
+  static_assert(0 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      ) constness { \
+    GMOCK_MOCKER_(0, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(0, constness, Method).Invoke(); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method() constness { \
+    GMOCK_MOCKER_(0, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(0, constness, Method).With(); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(0, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD1_(tn, constness, ct, Method, ...) \
+  static_assert(1 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1) constness { \
+    GMOCK_MOCKER_(1, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(1, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1) constness { \
+    GMOCK_MOCKER_(1, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(1, constness, Method).With(gmock_a1); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(1, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD2_(tn, constness, ct, Method, ...) \
+  static_assert(2 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2) constness { \
+    GMOCK_MOCKER_(2, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(2, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2) constness { \
+    GMOCK_MOCKER_(2, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(2, constness, Method).With(gmock_a1, gmock_a2); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(2, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD3_(tn, constness, ct, Method, ...) \
+  static_assert(3 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, \
+          __VA_ARGS__) gmock_a3) constness { \
+    GMOCK_MOCKER_(3, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(3, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3) constness { \
+    GMOCK_MOCKER_(3, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(3, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(3, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD4_(tn, constness, ct, Method, ...) \
+  static_assert(4 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4) constness { \
+    GMOCK_MOCKER_(4, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(4, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4) constness { \
+    GMOCK_MOCKER_(4, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(4, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(4, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD5_(tn, constness, ct, Method, ...) \
+  static_assert(5 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, GMOCK_ARG_(tn, 5, \
+          __VA_ARGS__) gmock_a5) constness { \
+    GMOCK_MOCKER_(5, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(5, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4), \
+  ::std::forward<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(gmock_a5)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
+                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5) constness { \
+    GMOCK_MOCKER_(5, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(5, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4, gmock_a5); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 5, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(5, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD6_(tn, constness, ct, Method, ...) \
+  static_assert(6 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, GMOCK_ARG_(tn, 5, \
+          __VA_ARGS__) gmock_a5, GMOCK_ARG_(tn, 6, \
+          __VA_ARGS__) gmock_a6) constness { \
+    GMOCK_MOCKER_(6, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(6, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4), \
+  ::std::forward<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(gmock_a5), \
+  ::std::forward<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(gmock_a6)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
+                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
+                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6) constness { \
+    GMOCK_MOCKER_(6, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(6, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4, gmock_a5, gmock_a6); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 6, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(6, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD7_(tn, constness, ct, Method, ...) \
+  static_assert(7 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, GMOCK_ARG_(tn, 5, \
+          __VA_ARGS__) gmock_a5, GMOCK_ARG_(tn, 6, __VA_ARGS__) gmock_a6, \
+          GMOCK_ARG_(tn, 7, __VA_ARGS__) gmock_a7) constness { \
+    GMOCK_MOCKER_(7, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(7, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4), \
+  ::std::forward<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(gmock_a5), \
+  ::std::forward<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(gmock_a6), \
+  ::std::forward<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(gmock_a7)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
+                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
+                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6, \
+                     GMOCK_MATCHER_(tn, 7, __VA_ARGS__) gmock_a7) constness { \
+    GMOCK_MOCKER_(7, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(7, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 7, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(7, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD8_(tn, constness, ct, Method, ...) \
+  static_assert(8 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, GMOCK_ARG_(tn, 5, \
+          __VA_ARGS__) gmock_a5, GMOCK_ARG_(tn, 6, __VA_ARGS__) gmock_a6, \
+          GMOCK_ARG_(tn, 7, __VA_ARGS__) gmock_a7, GMOCK_ARG_(tn, 8, \
+          __VA_ARGS__) gmock_a8) constness { \
+    GMOCK_MOCKER_(8, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(8, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4), \
+  ::std::forward<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(gmock_a5), \
+  ::std::forward<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(gmock_a6), \
+  ::std::forward<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(gmock_a7), \
+  ::std::forward<GMOCK_ARG_(tn, 8, __VA_ARGS__)>(gmock_a8)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
+                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
+                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6, \
+                     GMOCK_MATCHER_(tn, 7, __VA_ARGS__) gmock_a7, \
+                     GMOCK_MATCHER_(tn, 8, __VA_ARGS__) gmock_a8) constness { \
+    GMOCK_MOCKER_(8, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(8, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7, gmock_a8); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 8, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(8, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD9_(tn, constness, ct, Method, ...) \
+  static_assert(9 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, GMOCK_ARG_(tn, 5, \
+          __VA_ARGS__) gmock_a5, GMOCK_ARG_(tn, 6, __VA_ARGS__) gmock_a6, \
+          GMOCK_ARG_(tn, 7, __VA_ARGS__) gmock_a7, GMOCK_ARG_(tn, 8, \
+          __VA_ARGS__) gmock_a8, GMOCK_ARG_(tn, 9, \
+          __VA_ARGS__) gmock_a9) constness { \
+    GMOCK_MOCKER_(9, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(9, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4), \
+  ::std::forward<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(gmock_a5), \
+  ::std::forward<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(gmock_a6), \
+  ::std::forward<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(gmock_a7), \
+  ::std::forward<GMOCK_ARG_(tn, 8, __VA_ARGS__)>(gmock_a8), \
+  ::std::forward<GMOCK_ARG_(tn, 9, __VA_ARGS__)>(gmock_a9)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
+                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
+                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6, \
+                     GMOCK_MATCHER_(tn, 7, __VA_ARGS__) gmock_a7, \
+                     GMOCK_MATCHER_(tn, 8, __VA_ARGS__) gmock_a8, \
+                     GMOCK_MATCHER_(tn, 9, __VA_ARGS__) gmock_a9) constness { \
+    GMOCK_MOCKER_(9, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(9, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7, gmock_a8, \
+        gmock_a9); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 8, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 9, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(9, constness, \
+      Method)
+
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD10_(tn, constness, ct, Method, ...) \
+  static_assert(10 == \
+      ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, \
+      "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      GMOCK_ARG_(tn, 1, __VA_ARGS__) gmock_a1, GMOCK_ARG_(tn, 2, \
+          __VA_ARGS__) gmock_a2, GMOCK_ARG_(tn, 3, __VA_ARGS__) gmock_a3, \
+          GMOCK_ARG_(tn, 4, __VA_ARGS__) gmock_a4, GMOCK_ARG_(tn, 5, \
+          __VA_ARGS__) gmock_a5, GMOCK_ARG_(tn, 6, __VA_ARGS__) gmock_a6, \
+          GMOCK_ARG_(tn, 7, __VA_ARGS__) gmock_a7, GMOCK_ARG_(tn, 8, \
+          __VA_ARGS__) gmock_a8, GMOCK_ARG_(tn, 9, __VA_ARGS__) gmock_a9, \
+          GMOCK_ARG_(tn, 10, __VA_ARGS__) gmock_a10) constness { \
+    GMOCK_MOCKER_(10, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_(10, constness, \
+        Method).Invoke(::std::forward<GMOCK_ARG_(tn, 1, \
+        __VA_ARGS__)>(gmock_a1), \
+  ::std::forward<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(gmock_a2), \
+  ::std::forward<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(gmock_a3), \
+  ::std::forward<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(gmock_a4), \
+  ::std::forward<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(gmock_a5), \
+  ::std::forward<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(gmock_a6), \
+  ::std::forward<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(gmock_a7), \
+  ::std::forward<GMOCK_ARG_(tn, 8, __VA_ARGS__)>(gmock_a8), \
+  ::std::forward<GMOCK_ARG_(tn, 9, __VA_ARGS__)>(gmock_a9), \
+  ::std::forward<GMOCK_ARG_(tn, 10, __VA_ARGS__)>(gmock_a10)); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method(GMOCK_MATCHER_(tn, 1, __VA_ARGS__) gmock_a1, \
+                     GMOCK_MATCHER_(tn, 2, __VA_ARGS__) gmock_a2, \
+                     GMOCK_MATCHER_(tn, 3, __VA_ARGS__) gmock_a3, \
+                     GMOCK_MATCHER_(tn, 4, __VA_ARGS__) gmock_a4, \
+                     GMOCK_MATCHER_(tn, 5, __VA_ARGS__) gmock_a5, \
+                     GMOCK_MATCHER_(tn, 6, __VA_ARGS__) gmock_a6, \
+                     GMOCK_MATCHER_(tn, 7, __VA_ARGS__) gmock_a7, \
+                     GMOCK_MATCHER_(tn, 8, __VA_ARGS__) gmock_a8, \
+                     GMOCK_MATCHER_(tn, 9, __VA_ARGS__) gmock_a9, \
+                     GMOCK_MATCHER_(tn, 10, \
+                         __VA_ARGS__) gmock_a10) constness { \
+    GMOCK_MOCKER_(10, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_(10, constness, Method).With(gmock_a1, gmock_a2, \
+        gmock_a3, gmock_a4, gmock_a5, gmock_a6, gmock_a7, gmock_a8, gmock_a9, \
+        gmock_a10); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method(::testing::A<GMOCK_ARG_(tn, 1, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 2, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 3, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 4, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 5, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 6, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 7, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 8, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 9, __VA_ARGS__)>(), \
+                     ::testing::A<GMOCK_ARG_(tn, 10, __VA_ARGS__)>()); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_(10, constness, \
+      Method)
+
+#define MOCK_METHOD0(m, ...) GMOCK_METHOD0_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD1(m, ...) GMOCK_METHOD1_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD2(m, ...) GMOCK_METHOD2_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD3(m, ...) GMOCK_METHOD3_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD4(m, ...) GMOCK_METHOD4_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD5(m, ...) GMOCK_METHOD5_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD6(m, ...) GMOCK_METHOD6_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD7(m, ...) GMOCK_METHOD7_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD8(m, ...) GMOCK_METHOD8_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD9(m, ...) GMOCK_METHOD9_(, , , m, __VA_ARGS__)
+#define MOCK_METHOD10(m, ...) GMOCK_METHOD10_(, , , m, __VA_ARGS__)
+
+#define MOCK_CONST_METHOD0(m, ...) GMOCK_METHOD0_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD1(m, ...) GMOCK_METHOD1_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD2(m, ...) GMOCK_METHOD2_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD3(m, ...) GMOCK_METHOD3_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD4(m, ...) GMOCK_METHOD4_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD5(m, ...) GMOCK_METHOD5_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD6(m, ...) GMOCK_METHOD6_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD7(m, ...) GMOCK_METHOD7_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD8(m, ...) GMOCK_METHOD8_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD9(m, ...) GMOCK_METHOD9_(, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD10(m, ...) GMOCK_METHOD10_(, const, , m, __VA_ARGS__)
+
+#define MOCK_METHOD0_T(m, ...) GMOCK_METHOD0_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD1_T(m, ...) GMOCK_METHOD1_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD2_T(m, ...) GMOCK_METHOD2_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD3_T(m, ...) GMOCK_METHOD3_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD4_T(m, ...) GMOCK_METHOD4_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD5_T(m, ...) GMOCK_METHOD5_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD6_T(m, ...) GMOCK_METHOD6_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD7_T(m, ...) GMOCK_METHOD7_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD8_T(m, ...) GMOCK_METHOD8_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD9_T(m, ...) GMOCK_METHOD9_(typename, , , m, __VA_ARGS__)
+#define MOCK_METHOD10_T(m, ...) GMOCK_METHOD10_(typename, , , m, __VA_ARGS__)
+
+#define MOCK_CONST_METHOD0_T(m, ...) \
+    GMOCK_METHOD0_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD1_T(m, ...) \
+    GMOCK_METHOD1_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD2_T(m, ...) \
+    GMOCK_METHOD2_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD3_T(m, ...) \
+    GMOCK_METHOD3_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD4_T(m, ...) \
+    GMOCK_METHOD4_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD5_T(m, ...) \
+    GMOCK_METHOD5_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD6_T(m, ...) \
+    GMOCK_METHOD6_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD7_T(m, ...) \
+    GMOCK_METHOD7_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD8_T(m, ...) \
+    GMOCK_METHOD8_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD9_T(m, ...) \
+    GMOCK_METHOD9_(typename, const, , m, __VA_ARGS__)
+#define MOCK_CONST_METHOD10_T(m, ...) \
+    GMOCK_METHOD10_(typename, const, , m, __VA_ARGS__)
+
+#define MOCK_METHOD0_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD0_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD1_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD1_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD2_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD2_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD3_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD3_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD4_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD4_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD5_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD5_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD6_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD6_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD7_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD7_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD8_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD8_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD9_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD9_(, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD10_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD10_(, , ct, m, __VA_ARGS__)
+
+#define MOCK_CONST_METHOD0_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD0_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD1_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD1_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD2_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD2_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD3_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD3_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD4_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD4_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD5_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD5_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD6_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD6_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD7_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD7_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD8_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD8_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD9_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD9_(, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD10_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD10_(, const, ct, m, __VA_ARGS__)
+
+#define MOCK_METHOD0_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD0_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD1_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD1_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD2_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD2_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD3_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD3_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD4_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD4_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD5_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD5_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD6_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD6_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD7_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD7_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD8_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD8_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD9_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD9_(typename, , ct, m, __VA_ARGS__)
+#define MOCK_METHOD10_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD10_(typename, , ct, m, __VA_ARGS__)
+
+#define MOCK_CONST_METHOD0_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD0_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD1_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD1_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD2_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD2_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD3_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD3_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD4_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD4_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD5_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD5_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD6_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD6_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD7_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD7_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD8_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD8_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD9_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD9_(typename, const, ct, m, __VA_ARGS__)
+#define MOCK_CONST_METHOD10_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD10_(typename, const, ct, m, __VA_ARGS__)
+
+}  // namespace testing
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-function-mockers.h.pump b/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-function-mockers.h.pump
new file mode 100644
index 0000000000000000000000000000000000000000..a56e132f348706701dc1cfafa51bd0e61ed400e1
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-function-mockers.h.pump
@@ -0,0 +1,227 @@
+$$ -*- mode: c++; -*-
+$$ This is a Pump source file.  Please use Pump to convert
+$$ it to gmock-generated-function-mockers.h.
+$$
+$var n = 10  $$ The maximum arity we support.
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements function mockers of various arities.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
+
+#include <functional>
+#include <utility>
+
+#include "gmock/gmock-spec-builders.h"
+#include "gmock/internal/gmock-internal-utils.h"
+
+namespace testing {
+namespace internal {
+
+$range i 0..n
+// Removes the given pointer; this is a helper for the expectation setter method
+// for parameterless matchers.
+//
+// We want to make sure that the user cannot set a parameterless expectation on
+// overloaded methods, including methods which are overloaded on const. Example:
+//
+//   class MockClass {
+//     MOCK_METHOD0(GetName, string&());
+//     MOCK_CONST_METHOD0(GetName, const string&());
+//   };
+//
+//   TEST() {
+//     // This should be an error, as it's not clear which overload is expected.
+//     EXPECT_CALL(mock, GetName).WillOnce(ReturnRef(value));
+//   }
+//
+// Here are the generated expectation-setter methods:
+//
+//   class MockClass {
+//     // Overload 1
+//     MockSpec<string&()> gmock_GetName() { ... }
+//     // Overload 2. Declared const so that the compiler will generate an
+//     // error when trying to resolve between this and overload 4 in
+//     // 'gmock_GetName(WithoutMatchers(), nullptr)'.
+//     MockSpec<string&()> gmock_GetName(
+//         const WithoutMatchers&, const Function<string&()>*) const {
+//       // Removes const from this, calls overload 1
+//       return AdjustConstness_(this)->gmock_GetName();
+//     }
+//
+//     // Overload 3
+//     const string& gmock_GetName() const { ... }
+//     // Overload 4
+//     MockSpec<const string&()> gmock_GetName(
+//         const WithoutMatchers&, const Function<const string&()>*) const {
+//       // Does not remove const, calls overload 3
+//       return AdjustConstness_const(this)->gmock_GetName();
+//     }
+//   }
+//
+template <typename MockType>
+const MockType* AdjustConstness_const(const MockType* mock) {
+  return mock;
+}
+
+// Removes const from and returns the given pointer; this is a helper for the
+// expectation setter method for parameterless matchers.
+template <typename MockType>
+MockType* AdjustConstness_(const MockType* mock) {
+  return const_cast<MockType*>(mock);
+}
+
+}  // namespace internal
+
+// The style guide prohibits "using" statements in a namespace scope
+// inside a header file.  However, the FunctionMocker class template
+// is meant to be defined in the ::testing namespace.  The following
+// line is just a trick for working around a bug in MSVC 8.0, which
+// cannot handle it if we define FunctionMocker in ::testing.
+using internal::FunctionMocker;
+
+// GMOCK_RESULT_(tn, F) expands to the result type of function type F.
+// We define this as a variadic macro in case F contains unprotected
+// commas (the same reason that we use variadic macros in other places
+// in this file).
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_RESULT_(tn, ...) \
+    tn ::testing::internal::Function<__VA_ARGS__>::Result
+
+// The type of argument N of the given function type.
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_ARG_(tn, N, ...) \
+    tn ::testing::internal::Function<__VA_ARGS__>::template Arg<N-1>::type
+
+// The matcher type for argument N of the given function type.
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_MATCHER_(tn, N, ...) \
+    const ::testing::Matcher<GMOCK_ARG_(tn, N, __VA_ARGS__)>&
+
+// The variable for mocking the given method.
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_MOCKER_(arity, constness, Method) \
+    GTEST_CONCAT_TOKEN_(gmock##constness##arity##_##Method##_, __LINE__)
+
+
+$for i [[
+$range j 1..i
+$var arg_as = [[$for j, [[GMOCK_ARG_(tn, $j, __VA_ARGS__) gmock_a$j]]]]
+$var as = [[$for j, \
+  [[::std::forward<GMOCK_ARG_(tn, $j, __VA_ARGS__)>(gmock_a$j)]]]]
+$var matcher_arg_as = [[$for j, \
+                     [[GMOCK_MATCHER_(tn, $j, __VA_ARGS__) gmock_a$j]]]]
+$var matcher_as = [[$for j, [[gmock_a$j]]]]
+$var anything_matchers = [[$for j, \
+                     [[::testing::A<GMOCK_ARG_(tn, $j, __VA_ARGS__)>()]]]]
+// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
+#define GMOCK_METHOD$i[[]]_(tn, constness, ct, Method, ...) \
+  static_assert($i == ::testing::internal::Function<__VA_ARGS__>::ArgumentCount, "MOCK_METHOD<N> must match argument count.");\
+  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
+      $arg_as) constness { \
+    GMOCK_MOCKER_($i, constness, Method).SetOwnerAndName(this, #Method); \
+    return GMOCK_MOCKER_($i, constness, Method).Invoke($as); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> \
+      gmock_##Method($matcher_arg_as) constness { \
+    GMOCK_MOCKER_($i, constness, Method).RegisterOwner(this); \
+    return GMOCK_MOCKER_($i, constness, Method).With($matcher_as); \
+  } \
+  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
+      const ::testing::internal::WithoutMatchers&, \
+      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
+        return ::testing::internal::AdjustConstness_##constness(this)-> \
+            gmock_##Method($anything_matchers); \
+      } \
+  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_($i, constness, Method)
+
+
+]]
+$for i [[
+#define MOCK_METHOD$i(m, ...) GMOCK_METHOD$i[[]]_(, , , m, __VA_ARGS__)
+
+]]
+
+
+$for i [[
+#define MOCK_CONST_METHOD$i(m, ...) GMOCK_METHOD$i[[]]_(, const, , m, __VA_ARGS__)
+
+]]
+
+
+$for i [[
+#define MOCK_METHOD$i[[]]_T(m, ...) GMOCK_METHOD$i[[]]_(typename, , , m, __VA_ARGS__)
+
+]]
+
+
+$for i [[
+#define MOCK_CONST_METHOD$i[[]]_T(m, ...) \
+    GMOCK_METHOD$i[[]]_(typename, const, , m, __VA_ARGS__)
+
+]]
+
+
+$for i [[
+#define MOCK_METHOD$i[[]]_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD$i[[]]_(, , ct, m, __VA_ARGS__)
+
+]]
+
+
+$for i [[
+#define MOCK_CONST_METHOD$i[[]]_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD$i[[]]_(, const, ct, m, __VA_ARGS__)
+
+]]
+
+
+$for i [[
+#define MOCK_METHOD$i[[]]_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD$i[[]]_(typename, , ct, m, __VA_ARGS__)
+
+]]
+
+
+$for i [[
+#define MOCK_CONST_METHOD$i[[]]_T_WITH_CALLTYPE(ct, m, ...) \
+    GMOCK_METHOD$i[[]]_(typename, const, ct, m, __VA_ARGS__)
+
+]]
+
+}  // namespace testing
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-matchers.h b/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-matchers.h
new file mode 100644
index 0000000000000000000000000000000000000000..690a57f1c9fd7560b604815ea830c1aa9d44bf49
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-matchers.h
@@ -0,0 +1,1097 @@
+// This file was GENERATED by command:
+//     pump.py gmock-generated-matchers.h.pump
+// DO NOT EDIT BY HAND!!!
+
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements some commonly used variadic matchers.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
+
+#include <iterator>
+#include <sstream>
+#include <string>
+#include <utility>
+#include <vector>
+#include "gmock/gmock-matchers.h"
+
+// The MATCHER* family of macros can be used in a namespace scope to
+// define custom matchers easily.
+//
+// Basic Usage
+// ===========
+//
+// The syntax
+//
+//   MATCHER(name, description_string) { statements; }
+//
+// defines a matcher with the given name that executes the statements,
+// which must return a bool to indicate if the match succeeds.  Inside
+// the statements, you can refer to the value being matched by 'arg',
+// and refer to its type by 'arg_type'.
+//
+// The description string documents what the matcher does, and is used
+// to generate the failure message when the match fails.  Since a
+// MATCHER() is usually defined in a header file shared by multiple
+// C++ source files, we require the description to be a C-string
+// literal to avoid possible side effects.  It can be empty, in which
+// case we'll use the sequence of words in the matcher name as the
+// description.
+//
+// For example:
+//
+//   MATCHER(IsEven, "") { return (arg % 2) == 0; }
+//
+// allows you to write
+//
+//   // Expects mock_foo.Bar(n) to be called where n is even.
+//   EXPECT_CALL(mock_foo, Bar(IsEven()));
+//
+// or,
+//
+//   // Verifies that the value of some_expression is even.
+//   EXPECT_THAT(some_expression, IsEven());
+//
+// If the above assertion fails, it will print something like:
+//
+//   Value of: some_expression
+//   Expected: is even
+//     Actual: 7
+//
+// where the description "is even" is automatically calculated from the
+// matcher name IsEven.
+//
+// Argument Type
+// =============
+//
+// Note that the type of the value being matched (arg_type) is
+// determined by the context in which you use the matcher and is
+// supplied to you by the compiler, so you don't need to worry about
+// declaring it (nor can you).  This allows the matcher to be
+// polymorphic.  For example, IsEven() can be used to match any type
+// where the value of "(arg % 2) == 0" can be implicitly converted to
+// a bool.  In the "Bar(IsEven())" example above, if method Bar()
+// takes an int, 'arg_type' will be int; if it takes an unsigned long,
+// 'arg_type' will be unsigned long; and so on.
+//
+// Parameterizing Matchers
+// =======================
+//
+// Sometimes you'll want to parameterize the matcher.  For that you
+// can use another macro:
+//
+//   MATCHER_P(name, param_name, description_string) { statements; }
+//
+// For example:
+//
+//   MATCHER_P(HasAbsoluteValue, value, "") { return abs(arg) == value; }
+//
+// will allow you to write:
+//
+//   EXPECT_THAT(Blah("a"), HasAbsoluteValue(n));
+//
+// which may lead to this message (assuming n is 10):
+//
+//   Value of: Blah("a")
+//   Expected: has absolute value 10
+//     Actual: -9
+//
+// Note that both the matcher description and its parameter are
+// printed, making the message human-friendly.
+//
+// In the matcher definition body, you can write 'foo_type' to
+// reference the type of a parameter named 'foo'.  For example, in the
+// body of MATCHER_P(HasAbsoluteValue, value) above, you can write
+// 'value_type' to refer to the type of 'value'.
+//
+// We also provide MATCHER_P2, MATCHER_P3, ..., up to MATCHER_P10 to
+// support multi-parameter matchers.
+//
+// Describing Parameterized Matchers
+// =================================
+//
+// The last argument to MATCHER*() is a string-typed expression.  The
+// expression can reference all of the matcher's parameters and a
+// special bool-typed variable named 'negation'.  When 'negation' is
+// false, the expression should evaluate to the matcher's description;
+// otherwise it should evaluate to the description of the negation of
+// the matcher.  For example,
+//
+//   using testing::PrintToString;
+//
+//   MATCHER_P2(InClosedRange, low, hi,
+//       std::string(negation ? "is not" : "is") + " in range [" +
+//       PrintToString(low) + ", " + PrintToString(hi) + "]") {
+//     return low <= arg && arg <= hi;
+//   }
+//   ...
+//   EXPECT_THAT(3, InClosedRange(4, 6));
+//   EXPECT_THAT(3, Not(InClosedRange(2, 4)));
+//
+// would generate two failures that contain the text:
+//
+//   Expected: is in range [4, 6]
+//   ...
+//   Expected: is not in range [2, 4]
+//
+// If you specify "" as the description, the failure message will
+// contain the sequence of words in the matcher name followed by the
+// parameter values printed as a tuple.  For example,
+//
+//   MATCHER_P2(InClosedRange, low, hi, "") { ... }
+//   ...
+//   EXPECT_THAT(3, InClosedRange(4, 6));
+//   EXPECT_THAT(3, Not(InClosedRange(2, 4)));
+//
+// would generate two failures that contain the text:
+//
+//   Expected: in closed range (4, 6)
+//   ...
+//   Expected: not (in closed range (2, 4))
+//
+// Types of Matcher Parameters
+// ===========================
+//
+// For the purpose of typing, you can view
+//
+//   MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
+//
+// as shorthand for
+//
+//   template <typename p1_type, ..., typename pk_type>
+//   FooMatcherPk<p1_type, ..., pk_type>
+//   Foo(p1_type p1, ..., pk_type pk) { ... }
+//
+// When you write Foo(v1, ..., vk), the compiler infers the types of
+// the parameters v1, ..., and vk for you.  If you are not happy with
+// the result of the type inference, you can specify the types by
+// explicitly instantiating the template, as in Foo<long, bool>(5,
+// false).  As said earlier, you don't get to (or need to) specify
+// 'arg_type' as that's determined by the context in which the matcher
+// is used.  You can assign the result of expression Foo(p1, ..., pk)
+// to a variable of type FooMatcherPk<p1_type, ..., pk_type>.  This
+// can be useful when composing matchers.
+//
+// While you can instantiate a matcher template with reference types,
+// passing the parameters by pointer usually makes your code more
+// readable.  If, however, you still want to pass a parameter by
+// reference, be aware that in the failure message generated by the
+// matcher you will see the value of the referenced object but not its
+// address.
+//
+// Explaining Match Results
+// ========================
+//
+// Sometimes the matcher description alone isn't enough to explain why
+// the match has failed or succeeded.  For example, when expecting a
+// long string, it can be very helpful to also print the diff between
+// the expected string and the actual one.  To achieve that, you can
+// optionally stream additional information to a special variable
+// named result_listener, whose type is a pointer to class
+// MatchResultListener:
+//
+//   MATCHER_P(EqualsLongString, str, "") {
+//     if (arg == str) return true;
+//
+//     *result_listener << "the difference: "
+///                     << DiffStrings(str, arg);
+//     return false;
+//   }
+//
+// Overloading Matchers
+// ====================
+//
+// You can overload matchers with different numbers of parameters:
+//
+//   MATCHER_P(Blah, a, description_string1) { ... }
+//   MATCHER_P2(Blah, a, b, description_string2) { ... }
+//
+// Caveats
+// =======
+//
+// When defining a new matcher, you should also consider implementing
+// MatcherInterface or using MakePolymorphicMatcher().  These
+// approaches require more work than the MATCHER* macros, but also
+// give you more control on the types of the value being matched and
+// the matcher parameters, which may leads to better compiler error
+// messages when the matcher is used wrong.  They also allow
+// overloading matchers based on parameter types (as opposed to just
+// based on the number of parameters).
+//
+// MATCHER*() can only be used in a namespace scope as templates cannot be
+// declared inside of a local class.
+//
+// More Information
+// ================
+//
+// To learn more about using these macros, please search for 'MATCHER'
+// on
+// https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md
+
+#define MATCHER(name, description)\
+  class name##Matcher {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl()\
+           {}\
+      virtual bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const;\
+      virtual void DescribeTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(true);\
+      }\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<>()));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>());\
+    }\
+    name##Matcher() {\
+    }\
+   private:\
+  };\
+  inline name##Matcher name() {\
+    return name##Matcher();\
+  }\
+  template <typename arg_type>\
+  bool name##Matcher::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P(name, p0, description)\
+  template <typename p0##_type>\
+  class name##MatcherP {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      explicit gmock_Impl(p0##_type gmock_p0)\
+           : p0(::std::move(gmock_p0)) {}\
+      virtual bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const;\
+      virtual void DescribeTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type>(p0)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0));\
+    }\
+    explicit name##MatcherP(p0##_type gmock_p0) : p0(::std::move(gmock_p0)) {\
+    }\
+    p0##_type const p0;\
+   private:\
+  };\
+  template <typename p0##_type>\
+  inline name##MatcherP<p0##_type> name(p0##_type p0) {\
+    return name##MatcherP<p0##_type>(p0);\
+  }\
+  template <typename p0##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP<p0##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P2(name, p0, p1, description)\
+  template <typename p0##_type, typename p1##_type>\
+  class name##MatcherP2 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)) {}\
+      virtual bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const;\
+      virtual void DescribeTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type>(p0, p1)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1));\
+    }\
+    name##MatcherP2(p0##_type gmock_p0, \
+        p1##_type gmock_p1) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type>\
+  inline name##MatcherP2<p0##_type, p1##_type> name(p0##_type p0, \
+      p1##_type p1) {\
+    return name##MatcherP2<p0##_type, p1##_type>(p0, p1);\
+  }\
+  template <typename p0##_type, typename p1##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP2<p0##_type, \
+      p1##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P3(name, p0, p1, p2, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type>\
+  class name##MatcherP3 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)) {}\
+      virtual bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const;\
+      virtual void DescribeTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type>(p0, p1, p2)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2));\
+    }\
+    name##MatcherP3(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type>\
+  inline name##MatcherP3<p0##_type, p1##_type, p2##_type> name(p0##_type p0, \
+      p1##_type p1, p2##_type p2) {\
+    return name##MatcherP3<p0##_type, p1##_type, p2##_type>(p0, p1, p2);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP3<p0##_type, p1##_type, \
+      p2##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P4(name, p0, p1, p2, p3, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type>\
+  class name##MatcherP4 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)) {}\
+      virtual bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const;\
+      virtual void DescribeTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type>(p0, \
+                    p1, p2, p3)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3));\
+    }\
+    name##MatcherP4(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type>\
+  inline name##MatcherP4<p0##_type, p1##_type, p2##_type, \
+      p3##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, \
+      p3##_type p3) {\
+    return name##MatcherP4<p0##_type, p1##_type, p2##_type, p3##_type>(p0, \
+        p1, p2, p3);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP4<p0##_type, p1##_type, p2##_type, \
+      p3##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P5(name, p0, p1, p2, p3, p4, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type>\
+  class name##MatcherP5 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)), \
+               p4(::std::move(gmock_p4)) {}\
+      virtual bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const;\
+      virtual void DescribeTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+      p4##_type const p4;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
+                    p4##_type>(p0, p1, p2, p3, p4)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4));\
+    }\
+    name##MatcherP5(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, \
+        p4##_type gmock_p4) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+    p4##_type const p4;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type>\
+  inline name##MatcherP5<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
+      p4##_type p4) {\
+    return name##MatcherP5<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type>(p0, p1, p2, p3, p4);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP5<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P6(name, p0, p1, p2, p3, p4, p5, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type>\
+  class name##MatcherP6 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)), \
+               p4(::std::move(gmock_p4)), p5(::std::move(gmock_p5)) {}\
+      virtual bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const;\
+      virtual void DescribeTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+      p4##_type const p4;\
+      p5##_type const p5;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
+                    p4##_type, p5##_type>(p0, p1, p2, p3, p4, p5)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5));\
+    }\
+    name##MatcherP6(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+    p4##_type const p4;\
+    p5##_type const p5;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type>\
+  inline name##MatcherP6<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, \
+      p3##_type p3, p4##_type p4, p5##_type p5) {\
+    return name##MatcherP6<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type>(p0, p1, p2, p3, p4, p5);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP6<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+      p5##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P7(name, p0, p1, p2, p3, p4, p5, p6, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type>\
+  class name##MatcherP7 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+          p6##_type gmock_p6)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)), \
+               p4(::std::move(gmock_p4)), p5(::std::move(gmock_p5)), \
+               p6(::std::move(gmock_p6)) {}\
+      virtual bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const;\
+      virtual void DescribeTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+      p4##_type const p4;\
+      p5##_type const p5;\
+      p6##_type const p6;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
+                    p4##_type, p5##_type, p6##_type>(p0, p1, p2, p3, p4, p5, \
+                    p6)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6));\
+    }\
+    name##MatcherP7(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5, p6##_type gmock_p6) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+    p4##_type const p4;\
+    p5##_type const p5;\
+    p6##_type const p6;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type>\
+  inline name##MatcherP7<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type> name(p0##_type p0, p1##_type p1, \
+      p2##_type p2, p3##_type p3, p4##_type p4, p5##_type p5, \
+      p6##_type p6) {\
+    return name##MatcherP7<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type, p6##_type>(p0, p1, p2, p3, p4, p5, p6);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP7<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+      p5##_type, p6##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P8(name, p0, p1, p2, p3, p4, p5, p6, p7, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type>\
+  class name##MatcherP8 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+          p6##_type gmock_p6, p7##_type gmock_p7)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)), \
+               p4(::std::move(gmock_p4)), p5(::std::move(gmock_p5)), \
+               p6(::std::move(gmock_p6)), p7(::std::move(gmock_p7)) {}\
+      virtual bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const;\
+      virtual void DescribeTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+      p4##_type const p4;\
+      p5##_type const p5;\
+      p6##_type const p6;\
+      p7##_type const p7;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
+                    p4##_type, p5##_type, p6##_type, p7##_type>(p0, p1, p2, \
+                    p3, p4, p5, p6, p7)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6, p7));\
+    }\
+    name##MatcherP8(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5, p6##_type gmock_p6, \
+        p7##_type gmock_p7) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)), \
+        p7(::std::move(gmock_p7)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+    p4##_type const p4;\
+    p5##_type const p5;\
+    p6##_type const p6;\
+    p7##_type const p7;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type>\
+  inline name##MatcherP8<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type, p7##_type> name(p0##_type p0, \
+      p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4, p5##_type p5, \
+      p6##_type p6, p7##_type p7) {\
+    return name##MatcherP8<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type, p6##_type, p7##_type>(p0, p1, p2, p3, p4, p5, \
+        p6, p7);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP8<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+      p5##_type, p6##_type, \
+      p7##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P9(name, p0, p1, p2, p3, p4, p5, p6, p7, p8, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type>\
+  class name##MatcherP9 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+          p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)), \
+               p4(::std::move(gmock_p4)), p5(::std::move(gmock_p5)), \
+               p6(::std::move(gmock_p6)), p7(::std::move(gmock_p7)), \
+               p8(::std::move(gmock_p8)) {}\
+      virtual bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const;\
+      virtual void DescribeTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+      p4##_type const p4;\
+      p5##_type const p5;\
+      p6##_type const p6;\
+      p7##_type const p7;\
+      p8##_type const p8;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
+                    p4##_type, p5##_type, p6##_type, p7##_type, \
+                    p8##_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8));\
+    }\
+    name##MatcherP9(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5, p6##_type gmock_p6, p7##_type gmock_p7, \
+        p8##_type gmock_p8) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)), \
+        p7(::std::move(gmock_p7)), p8(::std::move(gmock_p8)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+    p4##_type const p4;\
+    p5##_type const p5;\
+    p6##_type const p6;\
+    p7##_type const p7;\
+    p8##_type const p8;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type>\
+  inline name##MatcherP9<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type, p7##_type, \
+      p8##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
+      p4##_type p4, p5##_type p5, p6##_type p6, p7##_type p7, \
+      p8##_type p8) {\
+    return name##MatcherP9<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type, p6##_type, p7##_type, p8##_type>(p0, p1, p2, \
+        p3, p4, p5, p6, p7, p8);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP9<p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, \
+      p5##_type, p6##_type, p7##_type, \
+      p8##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#define MATCHER_P10(name, p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, description)\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type, \
+      typename p9##_type>\
+  class name##MatcherP10 {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
+          p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
+          p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8, \
+          p9##_type gmock_p9)\
+           : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1)), \
+               p2(::std::move(gmock_p2)), p3(::std::move(gmock_p3)), \
+               p4(::std::move(gmock_p4)), p5(::std::move(gmock_p5)), \
+               p6(::std::move(gmock_p6)), p7(::std::move(gmock_p7)), \
+               p8(::std::move(gmock_p8)), p9(::std::move(gmock_p9)) {}\
+      virtual bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const;\
+      virtual void DescribeTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(true);\
+      }\
+      p0##_type const p0;\
+      p1##_type const p1;\
+      p2##_type const p2;\
+      p3##_type const p3;\
+      p4##_type const p4;\
+      p5##_type const p5;\
+      p6##_type const p6;\
+      p7##_type const p7;\
+      p8##_type const p8;\
+      p9##_type const p9;\
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
+                    p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, \
+                    p9##_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9)));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9));\
+    }\
+    name##MatcherP10(p0##_type gmock_p0, p1##_type gmock_p1, \
+        p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
+        p5##_type gmock_p5, p6##_type gmock_p6, p7##_type gmock_p7, \
+        p8##_type gmock_p8, p9##_type gmock_p9) : p0(::std::move(gmock_p0)), \
+        p1(::std::move(gmock_p1)), p2(::std::move(gmock_p2)), \
+        p3(::std::move(gmock_p3)), p4(::std::move(gmock_p4)), \
+        p5(::std::move(gmock_p5)), p6(::std::move(gmock_p6)), \
+        p7(::std::move(gmock_p7)), p8(::std::move(gmock_p8)), \
+        p9(::std::move(gmock_p9)) {\
+    }\
+    p0##_type const p0;\
+    p1##_type const p1;\
+    p2##_type const p2;\
+    p3##_type const p3;\
+    p4##_type const p4;\
+    p5##_type const p5;\
+    p6##_type const p6;\
+    p7##_type const p7;\
+    p8##_type const p8;\
+    p9##_type const p9;\
+   private:\
+  };\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type, \
+      typename p9##_type>\
+  inline name##MatcherP10<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, \
+      p9##_type> name(p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, \
+      p4##_type p4, p5##_type p5, p6##_type p6, p7##_type p7, p8##_type p8, \
+      p9##_type p9) {\
+    return name##MatcherP10<p0##_type, p1##_type, p2##_type, p3##_type, \
+        p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, p9##_type>(p0, \
+        p1, p2, p3, p4, p5, p6, p7, p8, p9);\
+  }\
+  template <typename p0##_type, typename p1##_type, typename p2##_type, \
+      typename p3##_type, typename p4##_type, typename p5##_type, \
+      typename p6##_type, typename p7##_type, typename p8##_type, \
+      typename p9##_type>\
+  template <typename arg_type>\
+  bool name##MatcherP10<p0##_type, p1##_type, p2##_type, p3##_type, \
+      p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, \
+      p9##_type>::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-matchers.h.pump b/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-matchers.h.pump
new file mode 100644
index 0000000000000000000000000000000000000000..ae90917cc38e2dcf556fe5b8034bedf673c4121e
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-generated-matchers.h.pump
@@ -0,0 +1,346 @@
+$$ -*- mode: c++; -*-
+$$ This is a Pump source file. Please use Pump to convert
+$$ it to gmock-generated-matchers.h.
+$$
+$var n = 10  $$ The maximum arity we support.
+$$ }} This line fixes auto-indentation of the following code in Emacs.
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements some commonly used variadic matchers.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
+
+#include <iterator>
+#include <sstream>
+#include <string>
+#include <utility>
+#include <vector>
+#include "gmock/gmock-matchers.h"
+
+// The MATCHER* family of macros can be used in a namespace scope to
+// define custom matchers easily.
+//
+// Basic Usage
+// ===========
+//
+// The syntax
+//
+//   MATCHER(name, description_string) { statements; }
+//
+// defines a matcher with the given name that executes the statements,
+// which must return a bool to indicate if the match succeeds.  Inside
+// the statements, you can refer to the value being matched by 'arg',
+// and refer to its type by 'arg_type'.
+//
+// The description string documents what the matcher does, and is used
+// to generate the failure message when the match fails.  Since a
+// MATCHER() is usually defined in a header file shared by multiple
+// C++ source files, we require the description to be a C-string
+// literal to avoid possible side effects.  It can be empty, in which
+// case we'll use the sequence of words in the matcher name as the
+// description.
+//
+// For example:
+//
+//   MATCHER(IsEven, "") { return (arg % 2) == 0; }
+//
+// allows you to write
+//
+//   // Expects mock_foo.Bar(n) to be called where n is even.
+//   EXPECT_CALL(mock_foo, Bar(IsEven()));
+//
+// or,
+//
+//   // Verifies that the value of some_expression is even.
+//   EXPECT_THAT(some_expression, IsEven());
+//
+// If the above assertion fails, it will print something like:
+//
+//   Value of: some_expression
+//   Expected: is even
+//     Actual: 7
+//
+// where the description "is even" is automatically calculated from the
+// matcher name IsEven.
+//
+// Argument Type
+// =============
+//
+// Note that the type of the value being matched (arg_type) is
+// determined by the context in which you use the matcher and is
+// supplied to you by the compiler, so you don't need to worry about
+// declaring it (nor can you).  This allows the matcher to be
+// polymorphic.  For example, IsEven() can be used to match any type
+// where the value of "(arg % 2) == 0" can be implicitly converted to
+// a bool.  In the "Bar(IsEven())" example above, if method Bar()
+// takes an int, 'arg_type' will be int; if it takes an unsigned long,
+// 'arg_type' will be unsigned long; and so on.
+//
+// Parameterizing Matchers
+// =======================
+//
+// Sometimes you'll want to parameterize the matcher.  For that you
+// can use another macro:
+//
+//   MATCHER_P(name, param_name, description_string) { statements; }
+//
+// For example:
+//
+//   MATCHER_P(HasAbsoluteValue, value, "") { return abs(arg) == value; }
+//
+// will allow you to write:
+//
+//   EXPECT_THAT(Blah("a"), HasAbsoluteValue(n));
+//
+// which may lead to this message (assuming n is 10):
+//
+//   Value of: Blah("a")
+//   Expected: has absolute value 10
+//     Actual: -9
+//
+// Note that both the matcher description and its parameter are
+// printed, making the message human-friendly.
+//
+// In the matcher definition body, you can write 'foo_type' to
+// reference the type of a parameter named 'foo'.  For example, in the
+// body of MATCHER_P(HasAbsoluteValue, value) above, you can write
+// 'value_type' to refer to the type of 'value'.
+//
+// We also provide MATCHER_P2, MATCHER_P3, ..., up to MATCHER_P$n to
+// support multi-parameter matchers.
+//
+// Describing Parameterized Matchers
+// =================================
+//
+// The last argument to MATCHER*() is a string-typed expression.  The
+// expression can reference all of the matcher's parameters and a
+// special bool-typed variable named 'negation'.  When 'negation' is
+// false, the expression should evaluate to the matcher's description;
+// otherwise it should evaluate to the description of the negation of
+// the matcher.  For example,
+//
+//   using testing::PrintToString;
+//
+//   MATCHER_P2(InClosedRange, low, hi,
+//       std::string(negation ? "is not" : "is") + " in range [" +
+//       PrintToString(low) + ", " + PrintToString(hi) + "]") {
+//     return low <= arg && arg <= hi;
+//   }
+//   ...
+//   EXPECT_THAT(3, InClosedRange(4, 6));
+//   EXPECT_THAT(3, Not(InClosedRange(2, 4)));
+//
+// would generate two failures that contain the text:
+//
+//   Expected: is in range [4, 6]
+//   ...
+//   Expected: is not in range [2, 4]
+//
+// If you specify "" as the description, the failure message will
+// contain the sequence of words in the matcher name followed by the
+// parameter values printed as a tuple.  For example,
+//
+//   MATCHER_P2(InClosedRange, low, hi, "") { ... }
+//   ...
+//   EXPECT_THAT(3, InClosedRange(4, 6));
+//   EXPECT_THAT(3, Not(InClosedRange(2, 4)));
+//
+// would generate two failures that contain the text:
+//
+//   Expected: in closed range (4, 6)
+//   ...
+//   Expected: not (in closed range (2, 4))
+//
+// Types of Matcher Parameters
+// ===========================
+//
+// For the purpose of typing, you can view
+//
+//   MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
+//
+// as shorthand for
+//
+//   template <typename p1_type, ..., typename pk_type>
+//   FooMatcherPk<p1_type, ..., pk_type>
+//   Foo(p1_type p1, ..., pk_type pk) { ... }
+//
+// When you write Foo(v1, ..., vk), the compiler infers the types of
+// the parameters v1, ..., and vk for you.  If you are not happy with
+// the result of the type inference, you can specify the types by
+// explicitly instantiating the template, as in Foo<long, bool>(5,
+// false).  As said earlier, you don't get to (or need to) specify
+// 'arg_type' as that's determined by the context in which the matcher
+// is used.  You can assign the result of expression Foo(p1, ..., pk)
+// to a variable of type FooMatcherPk<p1_type, ..., pk_type>.  This
+// can be useful when composing matchers.
+//
+// While you can instantiate a matcher template with reference types,
+// passing the parameters by pointer usually makes your code more
+// readable.  If, however, you still want to pass a parameter by
+// reference, be aware that in the failure message generated by the
+// matcher you will see the value of the referenced object but not its
+// address.
+//
+// Explaining Match Results
+// ========================
+//
+// Sometimes the matcher description alone isn't enough to explain why
+// the match has failed or succeeded.  For example, when expecting a
+// long string, it can be very helpful to also print the diff between
+// the expected string and the actual one.  To achieve that, you can
+// optionally stream additional information to a special variable
+// named result_listener, whose type is a pointer to class
+// MatchResultListener:
+//
+//   MATCHER_P(EqualsLongString, str, "") {
+//     if (arg == str) return true;
+//
+//     *result_listener << "the difference: "
+///                     << DiffStrings(str, arg);
+//     return false;
+//   }
+//
+// Overloading Matchers
+// ====================
+//
+// You can overload matchers with different numbers of parameters:
+//
+//   MATCHER_P(Blah, a, description_string1) { ... }
+//   MATCHER_P2(Blah, a, b, description_string2) { ... }
+//
+// Caveats
+// =======
+//
+// When defining a new matcher, you should also consider implementing
+// MatcherInterface or using MakePolymorphicMatcher().  These
+// approaches require more work than the MATCHER* macros, but also
+// give you more control on the types of the value being matched and
+// the matcher parameters, which may leads to better compiler error
+// messages when the matcher is used wrong.  They also allow
+// overloading matchers based on parameter types (as opposed to just
+// based on the number of parameters).
+//
+// MATCHER*() can only be used in a namespace scope as templates cannot be
+// declared inside of a local class.
+//
+// More Information
+// ================
+//
+// To learn more about using these macros, please search for 'MATCHER'
+// on
+// https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md
+
+$range i 0..n
+$for i
+
+[[
+$var macro_name = [[$if i==0 [[MATCHER]] $elif i==1 [[MATCHER_P]]
+                                         $else [[MATCHER_P$i]]]]
+$var class_name = [[name##Matcher[[$if i==0 [[]] $elif i==1 [[P]]
+                                                 $else [[P$i]]]]]]
+$range j 0..i-1
+$var template = [[$if i==0 [[]] $else [[
+
+  template <$for j, [[typename p$j##_type]]>\
+]]]]
+$var ctor_param_list = [[$for j, [[p$j##_type gmock_p$j]]]]
+$var impl_ctor_param_list = [[$for j, [[p$j##_type gmock_p$j]]]]
+$var impl_inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(::std::move(gmock_p$j))]]]]]]
+$var inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(::std::move(gmock_p$j))]]]]]]
+$var params = [[$for j, [[p$j]]]]
+$var param_types = [[$if i==0 [[]] $else [[<$for j, [[p$j##_type]]>]]]]
+$var param_types_and_names = [[$for j, [[p$j##_type p$j]]]]
+$var param_field_decls = [[$for j
+[[
+
+      p$j##_type const p$j;\
+]]]]
+$var param_field_decls2 = [[$for j
+[[
+
+    p$j##_type const p$j;\
+]]]]
+
+#define $macro_name(name$for j [[, p$j]], description)\$template
+  class $class_name {\
+   public:\
+    template <typename arg_type>\
+    class gmock_Impl : public ::testing::MatcherInterface<\
+        GTEST_REFERENCE_TO_CONST_(arg_type)> {\
+     public:\
+      [[$if i==1 [[explicit ]]]]gmock_Impl($impl_ctor_param_list)\
+          $impl_inits {}\
+      virtual bool MatchAndExplain(\
+          GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+          ::testing::MatchResultListener* result_listener) const;\
+      virtual void DescribeTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(false);\
+      }\
+      virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
+        *gmock_os << FormatDescription(true);\
+      }\$param_field_decls
+     private:\
+      ::std::string FormatDescription(bool negation) const {\
+        ::std::string gmock_description = (description);\
+        if (!gmock_description.empty()) {\
+          return gmock_description;\
+        }\
+        return ::testing::internal::FormatMatcherDescription(\
+            negation, #name, \
+            ::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
+                ::std::tuple<$for j, [[p$j##_type]]>($for j, [[p$j]])));\
+      }\
+    };\
+    template <typename arg_type>\
+    operator ::testing::Matcher<arg_type>() const {\
+      return ::testing::Matcher<arg_type>(\
+          new gmock_Impl<arg_type>($params));\
+    }\
+    [[$if i==1 [[explicit ]]]]$class_name($ctor_param_list)$inits {\
+    }\$param_field_decls2
+   private:\
+  };\$template
+  inline $class_name$param_types name($param_types_and_names) {\
+    return $class_name$param_types($params);\
+  }\$template
+  template <typename arg_type>\
+  bool $class_name$param_types::gmock_Impl<arg_type>::MatchAndExplain(\
+      GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
+      ::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
+          const
+]]
+
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-matchers.h b/build/_deps/googletest-src/googlemock/include/gmock/gmock-matchers.h
new file mode 100644
index 0000000000000000000000000000000000000000..28e188bb8130881858d7b9ee1c14b76c7ddbd5f6
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-matchers.h
@@ -0,0 +1,4568 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements some commonly used argument matchers.  More
+// matchers can be defined by the user implementing the
+// MatcherInterface<T> interface if necessary.
+//
+// See googletest/include/gtest/gtest-matchers.h for the definition of class
+// Matcher, class MatcherInterface, and others.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
+
+#include <math.h>
+#include <algorithm>
+#include <initializer_list>
+#include <iterator>
+#include <limits>
+#include <memory>
+#include <ostream>  // NOLINT
+#include <sstream>
+#include <string>
+#include <type_traits>
+#include <utility>
+#include <vector>
+#include "gmock/internal/gmock-internal-utils.h"
+#include "gmock/internal/gmock-port.h"
+#include "gtest/gtest.h"
+
+// MSVC warning C5046 is new as of VS2017 version 15.8.
+#if defined(_MSC_VER) && _MSC_VER >= 1915
+#define GMOCK_MAYBE_5046_ 5046
+#else
+#define GMOCK_MAYBE_5046_
+#endif
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(
+    4251 GMOCK_MAYBE_5046_ /* class A needs to have dll-interface to be used by
+                              clients of class B */
+    /* Symbol involving type with internal linkage not defined */)
+
+namespace testing {
+
+// To implement a matcher Foo for type T, define:
+//   1. a class FooMatcherImpl that implements the
+//      MatcherInterface<T> interface, and
+//   2. a factory function that creates a Matcher<T> object from a
+//      FooMatcherImpl*.
+//
+// The two-level delegation design makes it possible to allow a user
+// to write "v" instead of "Eq(v)" where a Matcher is expected, which
+// is impossible if we pass matchers by pointers.  It also eases
+// ownership management as Matcher objects can now be copied like
+// plain values.
+
+// A match result listener that stores the explanation in a string.
+class StringMatchResultListener : public MatchResultListener {
+ public:
+  StringMatchResultListener() : MatchResultListener(&ss_) {}
+
+  // Returns the explanation accumulated so far.
+  std::string str() const { return ss_.str(); }
+
+  // Clears the explanation accumulated so far.
+  void Clear() { ss_.str(""); }
+
+ private:
+  ::std::stringstream ss_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(StringMatchResultListener);
+};
+
+// Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION
+// and MUST NOT BE USED IN USER CODE!!!
+namespace internal {
+
+// The MatcherCastImpl class template is a helper for implementing
+// MatcherCast().  We need this helper in order to partially
+// specialize the implementation of MatcherCast() (C++ allows
+// class/struct templates to be partially specialized, but not
+// function templates.).
+
+// This general version is used when MatcherCast()'s argument is a
+// polymorphic matcher (i.e. something that can be converted to a
+// Matcher but is not one yet; for example, Eq(value)) or a value (for
+// example, "hello").
+template <typename T, typename M>
+class MatcherCastImpl {
+ public:
+  static Matcher<T> Cast(const M& polymorphic_matcher_or_value) {
+    // M can be a polymorphic matcher, in which case we want to use
+    // its conversion operator to create Matcher<T>.  Or it can be a value
+    // that should be passed to the Matcher<T>'s constructor.
+    //
+    // We can't call Matcher<T>(polymorphic_matcher_or_value) when M is a
+    // polymorphic matcher because it'll be ambiguous if T has an implicit
+    // constructor from M (this usually happens when T has an implicit
+    // constructor from any type).
+    //
+    // It won't work to unconditionally implict_cast
+    // polymorphic_matcher_or_value to Matcher<T> because it won't trigger
+    // a user-defined conversion from M to T if one exists (assuming M is
+    // a value).
+    return CastImpl(polymorphic_matcher_or_value,
+                    std::is_convertible<M, Matcher<T>>{},
+                    std::is_convertible<M, T>{});
+  }
+
+ private:
+  template <bool Ignore>
+  static Matcher<T> CastImpl(const M& polymorphic_matcher_or_value,
+                             std::true_type /* convertible_to_matcher */,
+                             bool_constant<Ignore>) {
+    // M is implicitly convertible to Matcher<T>, which means that either
+    // M is a polymorphic matcher or Matcher<T> has an implicit constructor
+    // from M.  In both cases using the implicit conversion will produce a
+    // matcher.
+    //
+    // Even if T has an implicit constructor from M, it won't be called because
+    // creating Matcher<T> would require a chain of two user-defined conversions
+    // (first to create T from M and then to create Matcher<T> from T).
+    return polymorphic_matcher_or_value;
+  }
+
+  // M can't be implicitly converted to Matcher<T>, so M isn't a polymorphic
+  // matcher. It's a value of a type implicitly convertible to T. Use direct
+  // initialization to create a matcher.
+  static Matcher<T> CastImpl(const M& value,
+                             std::false_type /* convertible_to_matcher */,
+                             std::true_type /* convertible_to_T */) {
+    return Matcher<T>(ImplicitCast_<T>(value));
+  }
+
+  // M can't be implicitly converted to either Matcher<T> or T. Attempt to use
+  // polymorphic matcher Eq(value) in this case.
+  //
+  // Note that we first attempt to perform an implicit cast on the value and
+  // only fall back to the polymorphic Eq() matcher afterwards because the
+  // latter calls bool operator==(const Lhs& lhs, const Rhs& rhs) in the end
+  // which might be undefined even when Rhs is implicitly convertible to Lhs
+  // (e.g. std::pair<const int, int> vs. std::pair<int, int>).
+  //
+  // We don't define this method inline as we need the declaration of Eq().
+  static Matcher<T> CastImpl(const M& value,
+                             std::false_type /* convertible_to_matcher */,
+                             std::false_type /* convertible_to_T */);
+};
+
+// This more specialized version is used when MatcherCast()'s argument
+// is already a Matcher.  This only compiles when type T can be
+// statically converted to type U.
+template <typename T, typename U>
+class MatcherCastImpl<T, Matcher<U> > {
+ public:
+  static Matcher<T> Cast(const Matcher<U>& source_matcher) {
+    return Matcher<T>(new Impl(source_matcher));
+  }
+
+ private:
+  class Impl : public MatcherInterface<T> {
+   public:
+    explicit Impl(const Matcher<U>& source_matcher)
+        : source_matcher_(source_matcher) {}
+
+    // We delegate the matching logic to the source matcher.
+    bool MatchAndExplain(T x, MatchResultListener* listener) const override {
+      using FromType = typename std::remove_cv<typename std::remove_pointer<
+          typename std::remove_reference<T>::type>::type>::type;
+      using ToType = typename std::remove_cv<typename std::remove_pointer<
+          typename std::remove_reference<U>::type>::type>::type;
+      // Do not allow implicitly converting base*/& to derived*/&.
+      static_assert(
+          // Do not trigger if only one of them is a pointer. That implies a
+          // regular conversion and not a down_cast.
+          (std::is_pointer<typename std::remove_reference<T>::type>::value !=
+           std::is_pointer<typename std::remove_reference<U>::type>::value) ||
+              std::is_same<FromType, ToType>::value ||
+              !std::is_base_of<FromType, ToType>::value,
+          "Can't implicitly convert from <base> to <derived>");
+
+      return source_matcher_.MatchAndExplain(static_cast<U>(x), listener);
+    }
+
+    void DescribeTo(::std::ostream* os) const override {
+      source_matcher_.DescribeTo(os);
+    }
+
+    void DescribeNegationTo(::std::ostream* os) const override {
+      source_matcher_.DescribeNegationTo(os);
+    }
+
+   private:
+    const Matcher<U> source_matcher_;
+
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+};
+
+// This even more specialized version is used for efficiently casting
+// a matcher to its own type.
+template <typename T>
+class MatcherCastImpl<T, Matcher<T> > {
+ public:
+  static Matcher<T> Cast(const Matcher<T>& matcher) { return matcher; }
+};
+
+}  // namespace internal
+
+// In order to be safe and clear, casting between different matcher
+// types is done explicitly via MatcherCast<T>(m), which takes a
+// matcher m and returns a Matcher<T>.  It compiles only when T can be
+// statically converted to the argument type of m.
+template <typename T, typename M>
+inline Matcher<T> MatcherCast(const M& matcher) {
+  return internal::MatcherCastImpl<T, M>::Cast(matcher);
+}
+
+// Implements SafeMatcherCast().
+//
+// FIXME: The intermediate SafeMatcherCastImpl class was introduced as a
+// workaround for a compiler bug, and can now be removed.
+template <typename T>
+class SafeMatcherCastImpl {
+ public:
+  // This overload handles polymorphic matchers and values only since
+  // monomorphic matchers are handled by the next one.
+  template <typename M>
+  static inline Matcher<T> Cast(const M& polymorphic_matcher_or_value) {
+    return internal::MatcherCastImpl<T, M>::Cast(polymorphic_matcher_or_value);
+  }
+
+  // This overload handles monomorphic matchers.
+  //
+  // In general, if type T can be implicitly converted to type U, we can
+  // safely convert a Matcher<U> to a Matcher<T> (i.e. Matcher is
+  // contravariant): just keep a copy of the original Matcher<U>, convert the
+  // argument from type T to U, and then pass it to the underlying Matcher<U>.
+  // The only exception is when U is a reference and T is not, as the
+  // underlying Matcher<U> may be interested in the argument's address, which
+  // is not preserved in the conversion from T to U.
+  template <typename U>
+  static inline Matcher<T> Cast(const Matcher<U>& matcher) {
+    // Enforce that T can be implicitly converted to U.
+    GTEST_COMPILE_ASSERT_((std::is_convertible<T, U>::value),
+                          "T must be implicitly convertible to U");
+    // Enforce that we are not converting a non-reference type T to a reference
+    // type U.
+    GTEST_COMPILE_ASSERT_(
+        std::is_reference<T>::value || !std::is_reference<U>::value,
+        cannot_convert_non_reference_arg_to_reference);
+    // In case both T and U are arithmetic types, enforce that the
+    // conversion is not lossy.
+    typedef GTEST_REMOVE_REFERENCE_AND_CONST_(T) RawT;
+    typedef GTEST_REMOVE_REFERENCE_AND_CONST_(U) RawU;
+    const bool kTIsOther = GMOCK_KIND_OF_(RawT) == internal::kOther;
+    const bool kUIsOther = GMOCK_KIND_OF_(RawU) == internal::kOther;
+    GTEST_COMPILE_ASSERT_(
+        kTIsOther || kUIsOther ||
+        (internal::LosslessArithmeticConvertible<RawT, RawU>::value),
+        conversion_of_arithmetic_types_must_be_lossless);
+    return MatcherCast<T>(matcher);
+  }
+};
+
+template <typename T, typename M>
+inline Matcher<T> SafeMatcherCast(const M& polymorphic_matcher) {
+  return SafeMatcherCastImpl<T>::Cast(polymorphic_matcher);
+}
+
+// A<T>() returns a matcher that matches any value of type T.
+template <typename T>
+Matcher<T> A();
+
+// Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION
+// and MUST NOT BE USED IN USER CODE!!!
+namespace internal {
+
+// If the explanation is not empty, prints it to the ostream.
+inline void PrintIfNotEmpty(const std::string& explanation,
+                            ::std::ostream* os) {
+  if (explanation != "" && os != nullptr) {
+    *os << ", " << explanation;
+  }
+}
+
+// Returns true if the given type name is easy to read by a human.
+// This is used to decide whether printing the type of a value might
+// be helpful.
+inline bool IsReadableTypeName(const std::string& type_name) {
+  // We consider a type name readable if it's short or doesn't contain
+  // a template or function type.
+  return (type_name.length() <= 20 ||
+          type_name.find_first_of("<(") == std::string::npos);
+}
+
+// Matches the value against the given matcher, prints the value and explains
+// the match result to the listener. Returns the match result.
+// 'listener' must not be NULL.
+// Value cannot be passed by const reference, because some matchers take a
+// non-const argument.
+template <typename Value, typename T>
+bool MatchPrintAndExplain(Value& value, const Matcher<T>& matcher,
+                          MatchResultListener* listener) {
+  if (!listener->IsInterested()) {
+    // If the listener is not interested, we do not need to construct the
+    // inner explanation.
+    return matcher.Matches(value);
+  }
+
+  StringMatchResultListener inner_listener;
+  const bool match = matcher.MatchAndExplain(value, &inner_listener);
+
+  UniversalPrint(value, listener->stream());
+#if GTEST_HAS_RTTI
+  const std::string& type_name = GetTypeName<Value>();
+  if (IsReadableTypeName(type_name))
+    *listener->stream() << " (of type " << type_name << ")";
+#endif
+  PrintIfNotEmpty(inner_listener.str(), listener->stream());
+
+  return match;
+}
+
+// An internal helper class for doing compile-time loop on a tuple's
+// fields.
+template <size_t N>
+class TuplePrefix {
+ public:
+  // TuplePrefix<N>::Matches(matcher_tuple, value_tuple) returns true
+  // if and only if the first N fields of matcher_tuple matches
+  // the first N fields of value_tuple, respectively.
+  template <typename MatcherTuple, typename ValueTuple>
+  static bool Matches(const MatcherTuple& matcher_tuple,
+                      const ValueTuple& value_tuple) {
+    return TuplePrefix<N - 1>::Matches(matcher_tuple, value_tuple) &&
+           std::get<N - 1>(matcher_tuple).Matches(std::get<N - 1>(value_tuple));
+  }
+
+  // TuplePrefix<N>::ExplainMatchFailuresTo(matchers, values, os)
+  // describes failures in matching the first N fields of matchers
+  // against the first N fields of values.  If there is no failure,
+  // nothing will be streamed to os.
+  template <typename MatcherTuple, typename ValueTuple>
+  static void ExplainMatchFailuresTo(const MatcherTuple& matchers,
+                                     const ValueTuple& values,
+                                     ::std::ostream* os) {
+    // First, describes failures in the first N - 1 fields.
+    TuplePrefix<N - 1>::ExplainMatchFailuresTo(matchers, values, os);
+
+    // Then describes the failure (if any) in the (N - 1)-th (0-based)
+    // field.
+    typename std::tuple_element<N - 1, MatcherTuple>::type matcher =
+        std::get<N - 1>(matchers);
+    typedef typename std::tuple_element<N - 1, ValueTuple>::type Value;
+    const Value& value = std::get<N - 1>(values);
+    StringMatchResultListener listener;
+    if (!matcher.MatchAndExplain(value, &listener)) {
+      *os << "  Expected arg #" << N - 1 << ": ";
+      std::get<N - 1>(matchers).DescribeTo(os);
+      *os << "\n           Actual: ";
+      // We remove the reference in type Value to prevent the
+      // universal printer from printing the address of value, which
+      // isn't interesting to the user most of the time.  The
+      // matcher's MatchAndExplain() method handles the case when
+      // the address is interesting.
+      internal::UniversalPrint(value, os);
+      PrintIfNotEmpty(listener.str(), os);
+      *os << "\n";
+    }
+  }
+};
+
+// The base case.
+template <>
+class TuplePrefix<0> {
+ public:
+  template <typename MatcherTuple, typename ValueTuple>
+  static bool Matches(const MatcherTuple& /* matcher_tuple */,
+                      const ValueTuple& /* value_tuple */) {
+    return true;
+  }
+
+  template <typename MatcherTuple, typename ValueTuple>
+  static void ExplainMatchFailuresTo(const MatcherTuple& /* matchers */,
+                                     const ValueTuple& /* values */,
+                                     ::std::ostream* /* os */) {}
+};
+
+// TupleMatches(matcher_tuple, value_tuple) returns true if and only if
+// all matchers in matcher_tuple match the corresponding fields in
+// value_tuple.  It is a compiler error if matcher_tuple and
+// value_tuple have different number of fields or incompatible field
+// types.
+template <typename MatcherTuple, typename ValueTuple>
+bool TupleMatches(const MatcherTuple& matcher_tuple,
+                  const ValueTuple& value_tuple) {
+  // Makes sure that matcher_tuple and value_tuple have the same
+  // number of fields.
+  GTEST_COMPILE_ASSERT_(std::tuple_size<MatcherTuple>::value ==
+                            std::tuple_size<ValueTuple>::value,
+                        matcher_and_value_have_different_numbers_of_fields);
+  return TuplePrefix<std::tuple_size<ValueTuple>::value>::Matches(matcher_tuple,
+                                                                  value_tuple);
+}
+
+// Describes failures in matching matchers against values.  If there
+// is no failure, nothing will be streamed to os.
+template <typename MatcherTuple, typename ValueTuple>
+void ExplainMatchFailureTupleTo(const MatcherTuple& matchers,
+                                const ValueTuple& values,
+                                ::std::ostream* os) {
+  TuplePrefix<std::tuple_size<MatcherTuple>::value>::ExplainMatchFailuresTo(
+      matchers, values, os);
+}
+
+// TransformTupleValues and its helper.
+//
+// TransformTupleValuesHelper hides the internal machinery that
+// TransformTupleValues uses to implement a tuple traversal.
+template <typename Tuple, typename Func, typename OutIter>
+class TransformTupleValuesHelper {
+ private:
+  typedef ::std::tuple_size<Tuple> TupleSize;
+
+ public:
+  // For each member of tuple 't', taken in order, evaluates '*out++ = f(t)'.
+  // Returns the final value of 'out' in case the caller needs it.
+  static OutIter Run(Func f, const Tuple& t, OutIter out) {
+    return IterateOverTuple<Tuple, TupleSize::value>()(f, t, out);
+  }
+
+ private:
+  template <typename Tup, size_t kRemainingSize>
+  struct IterateOverTuple {
+    OutIter operator() (Func f, const Tup& t, OutIter out) const {
+      *out++ = f(::std::get<TupleSize::value - kRemainingSize>(t));
+      return IterateOverTuple<Tup, kRemainingSize - 1>()(f, t, out);
+    }
+  };
+  template <typename Tup>
+  struct IterateOverTuple<Tup, 0> {
+    OutIter operator() (Func /* f */, const Tup& /* t */, OutIter out) const {
+      return out;
+    }
+  };
+};
+
+// Successively invokes 'f(element)' on each element of the tuple 't',
+// appending each result to the 'out' iterator. Returns the final value
+// of 'out'.
+template <typename Tuple, typename Func, typename OutIter>
+OutIter TransformTupleValues(Func f, const Tuple& t, OutIter out) {
+  return TransformTupleValuesHelper<Tuple, Func, OutIter>::Run(f, t, out);
+}
+
+// Implements A<T>().
+template <typename T>
+class AnyMatcherImpl : public MatcherInterface<const T&> {
+ public:
+  bool MatchAndExplain(const T& /* x */,
+                       MatchResultListener* /* listener */) const override {
+    return true;
+  }
+  void DescribeTo(::std::ostream* os) const override { *os << "is anything"; }
+  void DescribeNegationTo(::std::ostream* os) const override {
+    // This is mostly for completeness' safe, as it's not very useful
+    // to write Not(A<bool>()).  However we cannot completely rule out
+    // such a possibility, and it doesn't hurt to be prepared.
+    *os << "never matches";
+  }
+};
+
+// Implements _, a matcher that matches any value of any
+// type.  This is a polymorphic matcher, so we need a template type
+// conversion operator to make it appearing as a Matcher<T> for any
+// type T.
+class AnythingMatcher {
+ public:
+  template <typename T>
+  operator Matcher<T>() const { return A<T>(); }
+};
+
+// Implements the polymorphic IsNull() matcher, which matches any raw or smart
+// pointer that is NULL.
+class IsNullMatcher {
+ public:
+  template <typename Pointer>
+  bool MatchAndExplain(const Pointer& p,
+                       MatchResultListener* /* listener */) const {
+    return p == nullptr;
+  }
+
+  void DescribeTo(::std::ostream* os) const { *os << "is NULL"; }
+  void DescribeNegationTo(::std::ostream* os) const {
+    *os << "isn't NULL";
+  }
+};
+
+// Implements the polymorphic NotNull() matcher, which matches any raw or smart
+// pointer that is not NULL.
+class NotNullMatcher {
+ public:
+  template <typename Pointer>
+  bool MatchAndExplain(const Pointer& p,
+                       MatchResultListener* /* listener */) const {
+    return p != nullptr;
+  }
+
+  void DescribeTo(::std::ostream* os) const { *os << "isn't NULL"; }
+  void DescribeNegationTo(::std::ostream* os) const {
+    *os << "is NULL";
+  }
+};
+
+// Ref(variable) matches any argument that is a reference to
+// 'variable'.  This matcher is polymorphic as it can match any
+// super type of the type of 'variable'.
+//
+// The RefMatcher template class implements Ref(variable).  It can
+// only be instantiated with a reference type.  This prevents a user
+// from mistakenly using Ref(x) to match a non-reference function
+// argument.  For example, the following will righteously cause a
+// compiler error:
+//
+//   int n;
+//   Matcher<int> m1 = Ref(n);   // This won't compile.
+//   Matcher<int&> m2 = Ref(n);  // This will compile.
+template <typename T>
+class RefMatcher;
+
+template <typename T>
+class RefMatcher<T&> {
+  // Google Mock is a generic framework and thus needs to support
+  // mocking any function types, including those that take non-const
+  // reference arguments.  Therefore the template parameter T (and
+  // Super below) can be instantiated to either a const type or a
+  // non-const type.
+ public:
+  // RefMatcher() takes a T& instead of const T&, as we want the
+  // compiler to catch using Ref(const_value) as a matcher for a
+  // non-const reference.
+  explicit RefMatcher(T& x) : object_(x) {}  // NOLINT
+
+  template <typename Super>
+  operator Matcher<Super&>() const {
+    // By passing object_ (type T&) to Impl(), which expects a Super&,
+    // we make sure that Super is a super type of T.  In particular,
+    // this catches using Ref(const_value) as a matcher for a
+    // non-const reference, as you cannot implicitly convert a const
+    // reference to a non-const reference.
+    return MakeMatcher(new Impl<Super>(object_));
+  }
+
+ private:
+  template <typename Super>
+  class Impl : public MatcherInterface<Super&> {
+   public:
+    explicit Impl(Super& x) : object_(x) {}  // NOLINT
+
+    // MatchAndExplain() takes a Super& (as opposed to const Super&)
+    // in order to match the interface MatcherInterface<Super&>.
+    bool MatchAndExplain(Super& x,
+                         MatchResultListener* listener) const override {
+      *listener << "which is located @" << static_cast<const void*>(&x);
+      return &x == &object_;
+    }
+
+    void DescribeTo(::std::ostream* os) const override {
+      *os << "references the variable ";
+      UniversalPrinter<Super&>::Print(object_, os);
+    }
+
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << "does not reference the variable ";
+      UniversalPrinter<Super&>::Print(object_, os);
+    }
+
+   private:
+    const Super& object_;
+
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+
+  T& object_;
+
+  GTEST_DISALLOW_ASSIGN_(RefMatcher);
+};
+
+// Polymorphic helper functions for narrow and wide string matchers.
+inline bool CaseInsensitiveCStringEquals(const char* lhs, const char* rhs) {
+  return String::CaseInsensitiveCStringEquals(lhs, rhs);
+}
+
+inline bool CaseInsensitiveCStringEquals(const wchar_t* lhs,
+                                         const wchar_t* rhs) {
+  return String::CaseInsensitiveWideCStringEquals(lhs, rhs);
+}
+
+// String comparison for narrow or wide strings that can have embedded NUL
+// characters.
+template <typename StringType>
+bool CaseInsensitiveStringEquals(const StringType& s1,
+                                 const StringType& s2) {
+  // Are the heads equal?
+  if (!CaseInsensitiveCStringEquals(s1.c_str(), s2.c_str())) {
+    return false;
+  }
+
+  // Skip the equal heads.
+  const typename StringType::value_type nul = 0;
+  const size_t i1 = s1.find(nul), i2 = s2.find(nul);
+
+  // Are we at the end of either s1 or s2?
+  if (i1 == StringType::npos || i2 == StringType::npos) {
+    return i1 == i2;
+  }
+
+  // Are the tails equal?
+  return CaseInsensitiveStringEquals(s1.substr(i1 + 1), s2.substr(i2 + 1));
+}
+
+// String matchers.
+
+// Implements equality-based string matchers like StrEq, StrCaseNe, and etc.
+template <typename StringType>
+class StrEqualityMatcher {
+ public:
+  StrEqualityMatcher(const StringType& str, bool expect_eq,
+                     bool case_sensitive)
+      : string_(str), expect_eq_(expect_eq), case_sensitive_(case_sensitive) {}
+
+#if GTEST_HAS_ABSL
+  bool MatchAndExplain(const absl::string_view& s,
+                       MatchResultListener* listener) const {
+    // This should fail to compile if absl::string_view is used with wide
+    // strings.
+    const StringType& str = std::string(s);
+    return MatchAndExplain(str, listener);
+  }
+#endif  // GTEST_HAS_ABSL
+
+  // Accepts pointer types, particularly:
+  //   const char*
+  //   char*
+  //   const wchar_t*
+  //   wchar_t*
+  template <typename CharType>
+  bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
+    if (s == nullptr) {
+      return !expect_eq_;
+    }
+    return MatchAndExplain(StringType(s), listener);
+  }
+
+  // Matches anything that can convert to StringType.
+  //
+  // This is a template, not just a plain function with const StringType&,
+  // because absl::string_view has some interfering non-explicit constructors.
+  template <typename MatcheeStringType>
+  bool MatchAndExplain(const MatcheeStringType& s,
+                       MatchResultListener* /* listener */) const {
+    const StringType& s2(s);
+    const bool eq = case_sensitive_ ? s2 == string_ :
+        CaseInsensitiveStringEquals(s2, string_);
+    return expect_eq_ == eq;
+  }
+
+  void DescribeTo(::std::ostream* os) const {
+    DescribeToHelper(expect_eq_, os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const {
+    DescribeToHelper(!expect_eq_, os);
+  }
+
+ private:
+  void DescribeToHelper(bool expect_eq, ::std::ostream* os) const {
+    *os << (expect_eq ? "is " : "isn't ");
+    *os << "equal to ";
+    if (!case_sensitive_) {
+      *os << "(ignoring case) ";
+    }
+    UniversalPrint(string_, os);
+  }
+
+  const StringType string_;
+  const bool expect_eq_;
+  const bool case_sensitive_;
+
+  GTEST_DISALLOW_ASSIGN_(StrEqualityMatcher);
+};
+
+// Implements the polymorphic HasSubstr(substring) matcher, which
+// can be used as a Matcher<T> as long as T can be converted to a
+// string.
+template <typename StringType>
+class HasSubstrMatcher {
+ public:
+  explicit HasSubstrMatcher(const StringType& substring)
+      : substring_(substring) {}
+
+#if GTEST_HAS_ABSL
+  bool MatchAndExplain(const absl::string_view& s,
+                       MatchResultListener* listener) const {
+    // This should fail to compile if absl::string_view is used with wide
+    // strings.
+    const StringType& str = std::string(s);
+    return MatchAndExplain(str, listener);
+  }
+#endif  // GTEST_HAS_ABSL
+
+  // Accepts pointer types, particularly:
+  //   const char*
+  //   char*
+  //   const wchar_t*
+  //   wchar_t*
+  template <typename CharType>
+  bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
+    return s != nullptr && MatchAndExplain(StringType(s), listener);
+  }
+
+  // Matches anything that can convert to StringType.
+  //
+  // This is a template, not just a plain function with const StringType&,
+  // because absl::string_view has some interfering non-explicit constructors.
+  template <typename MatcheeStringType>
+  bool MatchAndExplain(const MatcheeStringType& s,
+                       MatchResultListener* /* listener */) const {
+    const StringType& s2(s);
+    return s2.find(substring_) != StringType::npos;
+  }
+
+  // Describes what this matcher matches.
+  void DescribeTo(::std::ostream* os) const {
+    *os << "has substring ";
+    UniversalPrint(substring_, os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const {
+    *os << "has no substring ";
+    UniversalPrint(substring_, os);
+  }
+
+ private:
+  const StringType substring_;
+
+  GTEST_DISALLOW_ASSIGN_(HasSubstrMatcher);
+};
+
+// Implements the polymorphic StartsWith(substring) matcher, which
+// can be used as a Matcher<T> as long as T can be converted to a
+// string.
+template <typename StringType>
+class StartsWithMatcher {
+ public:
+  explicit StartsWithMatcher(const StringType& prefix) : prefix_(prefix) {
+  }
+
+#if GTEST_HAS_ABSL
+  bool MatchAndExplain(const absl::string_view& s,
+                       MatchResultListener* listener) const {
+    // This should fail to compile if absl::string_view is used with wide
+    // strings.
+    const StringType& str = std::string(s);
+    return MatchAndExplain(str, listener);
+  }
+#endif  // GTEST_HAS_ABSL
+
+  // Accepts pointer types, particularly:
+  //   const char*
+  //   char*
+  //   const wchar_t*
+  //   wchar_t*
+  template <typename CharType>
+  bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
+    return s != nullptr && MatchAndExplain(StringType(s), listener);
+  }
+
+  // Matches anything that can convert to StringType.
+  //
+  // This is a template, not just a plain function with const StringType&,
+  // because absl::string_view has some interfering non-explicit constructors.
+  template <typename MatcheeStringType>
+  bool MatchAndExplain(const MatcheeStringType& s,
+                       MatchResultListener* /* listener */) const {
+    const StringType& s2(s);
+    return s2.length() >= prefix_.length() &&
+        s2.substr(0, prefix_.length()) == prefix_;
+  }
+
+  void DescribeTo(::std::ostream* os) const {
+    *os << "starts with ";
+    UniversalPrint(prefix_, os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const {
+    *os << "doesn't start with ";
+    UniversalPrint(prefix_, os);
+  }
+
+ private:
+  const StringType prefix_;
+
+  GTEST_DISALLOW_ASSIGN_(StartsWithMatcher);
+};
+
+// Implements the polymorphic EndsWith(substring) matcher, which
+// can be used as a Matcher<T> as long as T can be converted to a
+// string.
+template <typename StringType>
+class EndsWithMatcher {
+ public:
+  explicit EndsWithMatcher(const StringType& suffix) : suffix_(suffix) {}
+
+#if GTEST_HAS_ABSL
+  bool MatchAndExplain(const absl::string_view& s,
+                       MatchResultListener* listener) const {
+    // This should fail to compile if absl::string_view is used with wide
+    // strings.
+    const StringType& str = std::string(s);
+    return MatchAndExplain(str, listener);
+  }
+#endif  // GTEST_HAS_ABSL
+
+  // Accepts pointer types, particularly:
+  //   const char*
+  //   char*
+  //   const wchar_t*
+  //   wchar_t*
+  template <typename CharType>
+  bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
+    return s != nullptr && MatchAndExplain(StringType(s), listener);
+  }
+
+  // Matches anything that can convert to StringType.
+  //
+  // This is a template, not just a plain function with const StringType&,
+  // because absl::string_view has some interfering non-explicit constructors.
+  template <typename MatcheeStringType>
+  bool MatchAndExplain(const MatcheeStringType& s,
+                       MatchResultListener* /* listener */) const {
+    const StringType& s2(s);
+    return s2.length() >= suffix_.length() &&
+        s2.substr(s2.length() - suffix_.length()) == suffix_;
+  }
+
+  void DescribeTo(::std::ostream* os) const {
+    *os << "ends with ";
+    UniversalPrint(suffix_, os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const {
+    *os << "doesn't end with ";
+    UniversalPrint(suffix_, os);
+  }
+
+ private:
+  const StringType suffix_;
+
+  GTEST_DISALLOW_ASSIGN_(EndsWithMatcher);
+};
+
+// Implements a matcher that compares the two fields of a 2-tuple
+// using one of the ==, <=, <, etc, operators.  The two fields being
+// compared don't have to have the same type.
+//
+// The matcher defined here is polymorphic (for example, Eq() can be
+// used to match a std::tuple<int, short>, a std::tuple<const long&, double>,
+// etc).  Therefore we use a template type conversion operator in the
+// implementation.
+template <typename D, typename Op>
+class PairMatchBase {
+ public:
+  template <typename T1, typename T2>
+  operator Matcher<::std::tuple<T1, T2>>() const {
+    return Matcher<::std::tuple<T1, T2>>(new Impl<const ::std::tuple<T1, T2>&>);
+  }
+  template <typename T1, typename T2>
+  operator Matcher<const ::std::tuple<T1, T2>&>() const {
+    return MakeMatcher(new Impl<const ::std::tuple<T1, T2>&>);
+  }
+
+ private:
+  static ::std::ostream& GetDesc(::std::ostream& os) {  // NOLINT
+    return os << D::Desc();
+  }
+
+  template <typename Tuple>
+  class Impl : public MatcherInterface<Tuple> {
+   public:
+    bool MatchAndExplain(Tuple args,
+                         MatchResultListener* /* listener */) const override {
+      return Op()(::std::get<0>(args), ::std::get<1>(args));
+    }
+    void DescribeTo(::std::ostream* os) const override {
+      *os << "are " << GetDesc;
+    }
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << "aren't " << GetDesc;
+    }
+  };
+};
+
+class Eq2Matcher : public PairMatchBase<Eq2Matcher, AnyEq> {
+ public:
+  static const char* Desc() { return "an equal pair"; }
+};
+class Ne2Matcher : public PairMatchBase<Ne2Matcher, AnyNe> {
+ public:
+  static const char* Desc() { return "an unequal pair"; }
+};
+class Lt2Matcher : public PairMatchBase<Lt2Matcher, AnyLt> {
+ public:
+  static const char* Desc() { return "a pair where the first < the second"; }
+};
+class Gt2Matcher : public PairMatchBase<Gt2Matcher, AnyGt> {
+ public:
+  static const char* Desc() { return "a pair where the first > the second"; }
+};
+class Le2Matcher : public PairMatchBase<Le2Matcher, AnyLe> {
+ public:
+  static const char* Desc() { return "a pair where the first <= the second"; }
+};
+class Ge2Matcher : public PairMatchBase<Ge2Matcher, AnyGe> {
+ public:
+  static const char* Desc() { return "a pair where the first >= the second"; }
+};
+
+// Implements the Not(...) matcher for a particular argument type T.
+// We do not nest it inside the NotMatcher class template, as that
+// will prevent different instantiations of NotMatcher from sharing
+// the same NotMatcherImpl<T> class.
+template <typename T>
+class NotMatcherImpl : public MatcherInterface<const T&> {
+ public:
+  explicit NotMatcherImpl(const Matcher<T>& matcher)
+      : matcher_(matcher) {}
+
+  bool MatchAndExplain(const T& x,
+                       MatchResultListener* listener) const override {
+    return !matcher_.MatchAndExplain(x, listener);
+  }
+
+  void DescribeTo(::std::ostream* os) const override {
+    matcher_.DescribeNegationTo(os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const override {
+    matcher_.DescribeTo(os);
+  }
+
+ private:
+  const Matcher<T> matcher_;
+
+  GTEST_DISALLOW_ASSIGN_(NotMatcherImpl);
+};
+
+// Implements the Not(m) matcher, which matches a value that doesn't
+// match matcher m.
+template <typename InnerMatcher>
+class NotMatcher {
+ public:
+  explicit NotMatcher(InnerMatcher matcher) : matcher_(matcher) {}
+
+  // This template type conversion operator allows Not(m) to be used
+  // to match any type m can match.
+  template <typename T>
+  operator Matcher<T>() const {
+    return Matcher<T>(new NotMatcherImpl<T>(SafeMatcherCast<T>(matcher_)));
+  }
+
+ private:
+  InnerMatcher matcher_;
+
+  GTEST_DISALLOW_ASSIGN_(NotMatcher);
+};
+
+// Implements the AllOf(m1, m2) matcher for a particular argument type
+// T. We do not nest it inside the BothOfMatcher class template, as
+// that will prevent different instantiations of BothOfMatcher from
+// sharing the same BothOfMatcherImpl<T> class.
+template <typename T>
+class AllOfMatcherImpl : public MatcherInterface<const T&> {
+ public:
+  explicit AllOfMatcherImpl(std::vector<Matcher<T> > matchers)
+      : matchers_(std::move(matchers)) {}
+
+  void DescribeTo(::std::ostream* os) const override {
+    *os << "(";
+    for (size_t i = 0; i < matchers_.size(); ++i) {
+      if (i != 0) *os << ") and (";
+      matchers_[i].DescribeTo(os);
+    }
+    *os << ")";
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const override {
+    *os << "(";
+    for (size_t i = 0; i < matchers_.size(); ++i) {
+      if (i != 0) *os << ") or (";
+      matchers_[i].DescribeNegationTo(os);
+    }
+    *os << ")";
+  }
+
+  bool MatchAndExplain(const T& x,
+                       MatchResultListener* listener) const override {
+    // If either matcher1_ or matcher2_ doesn't match x, we only need
+    // to explain why one of them fails.
+    std::string all_match_result;
+
+    for (size_t i = 0; i < matchers_.size(); ++i) {
+      StringMatchResultListener slistener;
+      if (matchers_[i].MatchAndExplain(x, &slistener)) {
+        if (all_match_result.empty()) {
+          all_match_result = slistener.str();
+        } else {
+          std::string result = slistener.str();
+          if (!result.empty()) {
+            all_match_result += ", and ";
+            all_match_result += result;
+          }
+        }
+      } else {
+        *listener << slistener.str();
+        return false;
+      }
+    }
+
+    // Otherwise we need to explain why *both* of them match.
+    *listener << all_match_result;
+    return true;
+  }
+
+ private:
+  const std::vector<Matcher<T> > matchers_;
+
+  GTEST_DISALLOW_ASSIGN_(AllOfMatcherImpl);
+};
+
+// VariadicMatcher is used for the variadic implementation of
+// AllOf(m_1, m_2, ...) and AnyOf(m_1, m_2, ...).
+// CombiningMatcher<T> is used to recursively combine the provided matchers
+// (of type Args...).
+template <template <typename T> class CombiningMatcher, typename... Args>
+class VariadicMatcher {
+ public:
+  VariadicMatcher(const Args&... matchers)  // NOLINT
+      : matchers_(matchers...) {
+    static_assert(sizeof...(Args) > 0, "Must have at least one matcher.");
+  }
+
+  // This template type conversion operator allows an
+  // VariadicMatcher<Matcher1, Matcher2...> object to match any type that
+  // all of the provided matchers (Matcher1, Matcher2, ...) can match.
+  template <typename T>
+  operator Matcher<T>() const {
+    std::vector<Matcher<T> > values;
+    CreateVariadicMatcher<T>(&values, std::integral_constant<size_t, 0>());
+    return Matcher<T>(new CombiningMatcher<T>(std::move(values)));
+  }
+
+ private:
+  template <typename T, size_t I>
+  void CreateVariadicMatcher(std::vector<Matcher<T> >* values,
+                             std::integral_constant<size_t, I>) const {
+    values->push_back(SafeMatcherCast<T>(std::get<I>(matchers_)));
+    CreateVariadicMatcher<T>(values, std::integral_constant<size_t, I + 1>());
+  }
+
+  template <typename T>
+  void CreateVariadicMatcher(
+      std::vector<Matcher<T> >*,
+      std::integral_constant<size_t, sizeof...(Args)>) const {}
+
+  std::tuple<Args...> matchers_;
+
+  GTEST_DISALLOW_ASSIGN_(VariadicMatcher);
+};
+
+template <typename... Args>
+using AllOfMatcher = VariadicMatcher<AllOfMatcherImpl, Args...>;
+
+// Implements the AnyOf(m1, m2) matcher for a particular argument type
+// T.  We do not nest it inside the AnyOfMatcher class template, as
+// that will prevent different instantiations of AnyOfMatcher from
+// sharing the same EitherOfMatcherImpl<T> class.
+template <typename T>
+class AnyOfMatcherImpl : public MatcherInterface<const T&> {
+ public:
+  explicit AnyOfMatcherImpl(std::vector<Matcher<T> > matchers)
+      : matchers_(std::move(matchers)) {}
+
+  void DescribeTo(::std::ostream* os) const override {
+    *os << "(";
+    for (size_t i = 0; i < matchers_.size(); ++i) {
+      if (i != 0) *os << ") or (";
+      matchers_[i].DescribeTo(os);
+    }
+    *os << ")";
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const override {
+    *os << "(";
+    for (size_t i = 0; i < matchers_.size(); ++i) {
+      if (i != 0) *os << ") and (";
+      matchers_[i].DescribeNegationTo(os);
+    }
+    *os << ")";
+  }
+
+  bool MatchAndExplain(const T& x,
+                       MatchResultListener* listener) const override {
+    std::string no_match_result;
+
+    // If either matcher1_ or matcher2_ matches x, we just need to
+    // explain why *one* of them matches.
+    for (size_t i = 0; i < matchers_.size(); ++i) {
+      StringMatchResultListener slistener;
+      if (matchers_[i].MatchAndExplain(x, &slistener)) {
+        *listener << slistener.str();
+        return true;
+      } else {
+        if (no_match_result.empty()) {
+          no_match_result = slistener.str();
+        } else {
+          std::string result = slistener.str();
+          if (!result.empty()) {
+            no_match_result += ", and ";
+            no_match_result += result;
+          }
+        }
+      }
+    }
+
+    // Otherwise we need to explain why *both* of them fail.
+    *listener << no_match_result;
+    return false;
+  }
+
+ private:
+  const std::vector<Matcher<T> > matchers_;
+
+  GTEST_DISALLOW_ASSIGN_(AnyOfMatcherImpl);
+};
+
+// AnyOfMatcher is used for the variadic implementation of AnyOf(m_1, m_2, ...).
+template <typename... Args>
+using AnyOfMatcher = VariadicMatcher<AnyOfMatcherImpl, Args...>;
+
+// Wrapper for implementation of Any/AllOfArray().
+template <template <class> class MatcherImpl, typename T>
+class SomeOfArrayMatcher {
+ public:
+  // Constructs the matcher from a sequence of element values or
+  // element matchers.
+  template <typename Iter>
+  SomeOfArrayMatcher(Iter first, Iter last) : matchers_(first, last) {}
+
+  template <typename U>
+  operator Matcher<U>() const {  // NOLINT
+    using RawU = typename std::decay<U>::type;
+    std::vector<Matcher<RawU>> matchers;
+    for (const auto& matcher : matchers_) {
+      matchers.push_back(MatcherCast<RawU>(matcher));
+    }
+    return Matcher<U>(new MatcherImpl<RawU>(std::move(matchers)));
+  }
+
+ private:
+  const ::std::vector<T> matchers_;
+
+  GTEST_DISALLOW_ASSIGN_(SomeOfArrayMatcher);
+};
+
+template <typename T>
+using AllOfArrayMatcher = SomeOfArrayMatcher<AllOfMatcherImpl, T>;
+
+template <typename T>
+using AnyOfArrayMatcher = SomeOfArrayMatcher<AnyOfMatcherImpl, T>;
+
+// Used for implementing Truly(pred), which turns a predicate into a
+// matcher.
+template <typename Predicate>
+class TrulyMatcher {
+ public:
+  explicit TrulyMatcher(Predicate pred) : predicate_(pred) {}
+
+  // This method template allows Truly(pred) to be used as a matcher
+  // for type T where T is the argument type of predicate 'pred'.  The
+  // argument is passed by reference as the predicate may be
+  // interested in the address of the argument.
+  template <typename T>
+  bool MatchAndExplain(T& x,  // NOLINT
+                       MatchResultListener* /* listener */) const {
+    // Without the if-statement, MSVC sometimes warns about converting
+    // a value to bool (warning 4800).
+    //
+    // We cannot write 'return !!predicate_(x);' as that doesn't work
+    // when predicate_(x) returns a class convertible to bool but
+    // having no operator!().
+    if (predicate_(x))
+      return true;
+    return false;
+  }
+
+  void DescribeTo(::std::ostream* os) const {
+    *os << "satisfies the given predicate";
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const {
+    *os << "doesn't satisfy the given predicate";
+  }
+
+ private:
+  Predicate predicate_;
+
+  GTEST_DISALLOW_ASSIGN_(TrulyMatcher);
+};
+
+// Used for implementing Matches(matcher), which turns a matcher into
+// a predicate.
+template <typename M>
+class MatcherAsPredicate {
+ public:
+  explicit MatcherAsPredicate(M matcher) : matcher_(matcher) {}
+
+  // This template operator() allows Matches(m) to be used as a
+  // predicate on type T where m is a matcher on type T.
+  //
+  // The argument x is passed by reference instead of by value, as
+  // some matcher may be interested in its address (e.g. as in
+  // Matches(Ref(n))(x)).
+  template <typename T>
+  bool operator()(const T& x) const {
+    // We let matcher_ commit to a particular type here instead of
+    // when the MatcherAsPredicate object was constructed.  This
+    // allows us to write Matches(m) where m is a polymorphic matcher
+    // (e.g. Eq(5)).
+    //
+    // If we write Matcher<T>(matcher_).Matches(x) here, it won't
+    // compile when matcher_ has type Matcher<const T&>; if we write
+    // Matcher<const T&>(matcher_).Matches(x) here, it won't compile
+    // when matcher_ has type Matcher<T>; if we just write
+    // matcher_.Matches(x), it won't compile when matcher_ is
+    // polymorphic, e.g. Eq(5).
+    //
+    // MatcherCast<const T&>() is necessary for making the code work
+    // in all of the above situations.
+    return MatcherCast<const T&>(matcher_).Matches(x);
+  }
+
+ private:
+  M matcher_;
+
+  GTEST_DISALLOW_ASSIGN_(MatcherAsPredicate);
+};
+
+// For implementing ASSERT_THAT() and EXPECT_THAT().  The template
+// argument M must be a type that can be converted to a matcher.
+template <typename M>
+class PredicateFormatterFromMatcher {
+ public:
+  explicit PredicateFormatterFromMatcher(M m) : matcher_(std::move(m)) {}
+
+  // This template () operator allows a PredicateFormatterFromMatcher
+  // object to act as a predicate-formatter suitable for using with
+  // Google Test's EXPECT_PRED_FORMAT1() macro.
+  template <typename T>
+  AssertionResult operator()(const char* value_text, const T& x) const {
+    // We convert matcher_ to a Matcher<const T&> *now* instead of
+    // when the PredicateFormatterFromMatcher object was constructed,
+    // as matcher_ may be polymorphic (e.g. NotNull()) and we won't
+    // know which type to instantiate it to until we actually see the
+    // type of x here.
+    //
+    // We write SafeMatcherCast<const T&>(matcher_) instead of
+    // Matcher<const T&>(matcher_), as the latter won't compile when
+    // matcher_ has type Matcher<T> (e.g. An<int>()).
+    // We don't write MatcherCast<const T&> either, as that allows
+    // potentially unsafe downcasting of the matcher argument.
+    const Matcher<const T&> matcher = SafeMatcherCast<const T&>(matcher_);
+
+    // The expected path here is that the matcher should match (i.e. that most
+    // tests pass) so optimize for this case.
+    if (matcher.Matches(x)) {
+      return AssertionSuccess();
+    }
+
+    ::std::stringstream ss;
+    ss << "Value of: " << value_text << "\n"
+       << "Expected: ";
+    matcher.DescribeTo(&ss);
+
+    // Rerun the matcher to "PrintAndExain" the failure.
+    StringMatchResultListener listener;
+    if (MatchPrintAndExplain(x, matcher, &listener)) {
+      ss << "\n  The matcher failed on the initial attempt; but passed when "
+            "rerun to generate the explanation.";
+    }
+    ss << "\n  Actual: " << listener.str();
+    return AssertionFailure() << ss.str();
+  }
+
+ private:
+  const M matcher_;
+
+  GTEST_DISALLOW_ASSIGN_(PredicateFormatterFromMatcher);
+};
+
+// A helper function for converting a matcher to a predicate-formatter
+// without the user needing to explicitly write the type.  This is
+// used for implementing ASSERT_THAT() and EXPECT_THAT().
+// Implementation detail: 'matcher' is received by-value to force decaying.
+template <typename M>
+inline PredicateFormatterFromMatcher<M>
+MakePredicateFormatterFromMatcher(M matcher) {
+  return PredicateFormatterFromMatcher<M>(std::move(matcher));
+}
+
+// Implements the polymorphic floating point equality matcher, which matches
+// two float values using ULP-based approximation or, optionally, a
+// user-specified epsilon.  The template is meant to be instantiated with
+// FloatType being either float or double.
+template <typename FloatType>
+class FloatingEqMatcher {
+ public:
+  // Constructor for FloatingEqMatcher.
+  // The matcher's input will be compared with expected.  The matcher treats two
+  // NANs as equal if nan_eq_nan is true.  Otherwise, under IEEE standards,
+  // equality comparisons between NANs will always return false.  We specify a
+  // negative max_abs_error_ term to indicate that ULP-based approximation will
+  // be used for comparison.
+  FloatingEqMatcher(FloatType expected, bool nan_eq_nan) :
+    expected_(expected), nan_eq_nan_(nan_eq_nan), max_abs_error_(-1) {
+  }
+
+  // Constructor that supports a user-specified max_abs_error that will be used
+  // for comparison instead of ULP-based approximation.  The max absolute
+  // should be non-negative.
+  FloatingEqMatcher(FloatType expected, bool nan_eq_nan,
+                    FloatType max_abs_error)
+      : expected_(expected),
+        nan_eq_nan_(nan_eq_nan),
+        max_abs_error_(max_abs_error) {
+    GTEST_CHECK_(max_abs_error >= 0)
+        << ", where max_abs_error is" << max_abs_error;
+  }
+
+  // Implements floating point equality matcher as a Matcher<T>.
+  template <typename T>
+  class Impl : public MatcherInterface<T> {
+   public:
+    Impl(FloatType expected, bool nan_eq_nan, FloatType max_abs_error)
+        : expected_(expected),
+          nan_eq_nan_(nan_eq_nan),
+          max_abs_error_(max_abs_error) {}
+
+    bool MatchAndExplain(T value,
+                         MatchResultListener* listener) const override {
+      const FloatingPoint<FloatType> actual(value), expected(expected_);
+
+      // Compares NaNs first, if nan_eq_nan_ is true.
+      if (actual.is_nan() || expected.is_nan()) {
+        if (actual.is_nan() && expected.is_nan()) {
+          return nan_eq_nan_;
+        }
+        // One is nan; the other is not nan.
+        return false;
+      }
+      if (HasMaxAbsError()) {
+        // We perform an equality check so that inf will match inf, regardless
+        // of error bounds.  If the result of value - expected_ would result in
+        // overflow or if either value is inf, the default result is infinity,
+        // which should only match if max_abs_error_ is also infinity.
+        if (value == expected_) {
+          return true;
+        }
+
+        const FloatType diff = value - expected_;
+        if (fabs(diff) <= max_abs_error_) {
+          return true;
+        }
+
+        if (listener->IsInterested()) {
+          *listener << "which is " << diff << " from " << expected_;
+        }
+        return false;
+      } else {
+        return actual.AlmostEquals(expected);
+      }
+    }
+
+    void DescribeTo(::std::ostream* os) const override {
+      // os->precision() returns the previously set precision, which we
+      // store to restore the ostream to its original configuration
+      // after outputting.
+      const ::std::streamsize old_precision = os->precision(
+          ::std::numeric_limits<FloatType>::digits10 + 2);
+      if (FloatingPoint<FloatType>(expected_).is_nan()) {
+        if (nan_eq_nan_) {
+          *os << "is NaN";
+        } else {
+          *os << "never matches";
+        }
+      } else {
+        *os << "is approximately " << expected_;
+        if (HasMaxAbsError()) {
+          *os << " (absolute error <= " << max_abs_error_ << ")";
+        }
+      }
+      os->precision(old_precision);
+    }
+
+    void DescribeNegationTo(::std::ostream* os) const override {
+      // As before, get original precision.
+      const ::std::streamsize old_precision = os->precision(
+          ::std::numeric_limits<FloatType>::digits10 + 2);
+      if (FloatingPoint<FloatType>(expected_).is_nan()) {
+        if (nan_eq_nan_) {
+          *os << "isn't NaN";
+        } else {
+          *os << "is anything";
+        }
+      } else {
+        *os << "isn't approximately " << expected_;
+        if (HasMaxAbsError()) {
+          *os << " (absolute error > " << max_abs_error_ << ")";
+        }
+      }
+      // Restore original precision.
+      os->precision(old_precision);
+    }
+
+   private:
+    bool HasMaxAbsError() const {
+      return max_abs_error_ >= 0;
+    }
+
+    const FloatType expected_;
+    const bool nan_eq_nan_;
+    // max_abs_error will be used for value comparison when >= 0.
+    const FloatType max_abs_error_;
+
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+
+  // The following 3 type conversion operators allow FloatEq(expected) and
+  // NanSensitiveFloatEq(expected) to be used as a Matcher<float>, a
+  // Matcher<const float&>, or a Matcher<float&>, but nothing else.
+  // (While Google's C++ coding style doesn't allow arguments passed
+  // by non-const reference, we may see them in code not conforming to
+  // the style.  Therefore Google Mock needs to support them.)
+  operator Matcher<FloatType>() const {
+    return MakeMatcher(
+        new Impl<FloatType>(expected_, nan_eq_nan_, max_abs_error_));
+  }
+
+  operator Matcher<const FloatType&>() const {
+    return MakeMatcher(
+        new Impl<const FloatType&>(expected_, nan_eq_nan_, max_abs_error_));
+  }
+
+  operator Matcher<FloatType&>() const {
+    return MakeMatcher(
+        new Impl<FloatType&>(expected_, nan_eq_nan_, max_abs_error_));
+  }
+
+ private:
+  const FloatType expected_;
+  const bool nan_eq_nan_;
+  // max_abs_error will be used for value comparison when >= 0.
+  const FloatType max_abs_error_;
+
+  GTEST_DISALLOW_ASSIGN_(FloatingEqMatcher);
+};
+
+// A 2-tuple ("binary") wrapper around FloatingEqMatcher:
+// FloatingEq2Matcher() matches (x, y) by matching FloatingEqMatcher(x, false)
+// against y, and FloatingEq2Matcher(e) matches FloatingEqMatcher(x, false, e)
+// against y. The former implements "Eq", the latter "Near". At present, there
+// is no version that compares NaNs as equal.
+template <typename FloatType>
+class FloatingEq2Matcher {
+ public:
+  FloatingEq2Matcher() { Init(-1, false); }
+
+  explicit FloatingEq2Matcher(bool nan_eq_nan) { Init(-1, nan_eq_nan); }
+
+  explicit FloatingEq2Matcher(FloatType max_abs_error) {
+    Init(max_abs_error, false);
+  }
+
+  FloatingEq2Matcher(FloatType max_abs_error, bool nan_eq_nan) {
+    Init(max_abs_error, nan_eq_nan);
+  }
+
+  template <typename T1, typename T2>
+  operator Matcher<::std::tuple<T1, T2>>() const {
+    return MakeMatcher(
+        new Impl<::std::tuple<T1, T2>>(max_abs_error_, nan_eq_nan_));
+  }
+  template <typename T1, typename T2>
+  operator Matcher<const ::std::tuple<T1, T2>&>() const {
+    return MakeMatcher(
+        new Impl<const ::std::tuple<T1, T2>&>(max_abs_error_, nan_eq_nan_));
+  }
+
+ private:
+  static ::std::ostream& GetDesc(::std::ostream& os) {  // NOLINT
+    return os << "an almost-equal pair";
+  }
+
+  template <typename Tuple>
+  class Impl : public MatcherInterface<Tuple> {
+   public:
+    Impl(FloatType max_abs_error, bool nan_eq_nan) :
+        max_abs_error_(max_abs_error),
+        nan_eq_nan_(nan_eq_nan) {}
+
+    bool MatchAndExplain(Tuple args,
+                         MatchResultListener* listener) const override {
+      if (max_abs_error_ == -1) {
+        FloatingEqMatcher<FloatType> fm(::std::get<0>(args), nan_eq_nan_);
+        return static_cast<Matcher<FloatType>>(fm).MatchAndExplain(
+            ::std::get<1>(args), listener);
+      } else {
+        FloatingEqMatcher<FloatType> fm(::std::get<0>(args), nan_eq_nan_,
+                                        max_abs_error_);
+        return static_cast<Matcher<FloatType>>(fm).MatchAndExplain(
+            ::std::get<1>(args), listener);
+      }
+    }
+    void DescribeTo(::std::ostream* os) const override {
+      *os << "are " << GetDesc;
+    }
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << "aren't " << GetDesc;
+    }
+
+   private:
+    FloatType max_abs_error_;
+    const bool nan_eq_nan_;
+  };
+
+  void Init(FloatType max_abs_error_val, bool nan_eq_nan_val) {
+    max_abs_error_ = max_abs_error_val;
+    nan_eq_nan_ = nan_eq_nan_val;
+  }
+  FloatType max_abs_error_;
+  bool nan_eq_nan_;
+};
+
+// Implements the Pointee(m) matcher for matching a pointer whose
+// pointee matches matcher m.  The pointer can be either raw or smart.
+template <typename InnerMatcher>
+class PointeeMatcher {
+ public:
+  explicit PointeeMatcher(const InnerMatcher& matcher) : matcher_(matcher) {}
+
+  // This type conversion operator template allows Pointee(m) to be
+  // used as a matcher for any pointer type whose pointee type is
+  // compatible with the inner matcher, where type Pointer can be
+  // either a raw pointer or a smart pointer.
+  //
+  // The reason we do this instead of relying on
+  // MakePolymorphicMatcher() is that the latter is not flexible
+  // enough for implementing the DescribeTo() method of Pointee().
+  template <typename Pointer>
+  operator Matcher<Pointer>() const {
+    return Matcher<Pointer>(new Impl<const Pointer&>(matcher_));
+  }
+
+ private:
+  // The monomorphic implementation that works for a particular pointer type.
+  template <typename Pointer>
+  class Impl : public MatcherInterface<Pointer> {
+   public:
+    typedef typename PointeeOf<typename std::remove_const<
+        typename std::remove_reference<Pointer>::type>::type>::type Pointee;
+
+    explicit Impl(const InnerMatcher& matcher)
+        : matcher_(MatcherCast<const Pointee&>(matcher)) {}
+
+    void DescribeTo(::std::ostream* os) const override {
+      *os << "points to a value that ";
+      matcher_.DescribeTo(os);
+    }
+
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << "does not point to a value that ";
+      matcher_.DescribeTo(os);
+    }
+
+    bool MatchAndExplain(Pointer pointer,
+                         MatchResultListener* listener) const override {
+      if (GetRawPointer(pointer) == nullptr) return false;
+
+      *listener << "which points to ";
+      return MatchPrintAndExplain(*pointer, matcher_, listener);
+    }
+
+   private:
+    const Matcher<const Pointee&> matcher_;
+
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+
+  const InnerMatcher matcher_;
+
+  GTEST_DISALLOW_ASSIGN_(PointeeMatcher);
+};
+
+#if GTEST_HAS_RTTI
+// Implements the WhenDynamicCastTo<T>(m) matcher that matches a pointer or
+// reference that matches inner_matcher when dynamic_cast<T> is applied.
+// The result of dynamic_cast<To> is forwarded to the inner matcher.
+// If To is a pointer and the cast fails, the inner matcher will receive NULL.
+// If To is a reference and the cast fails, this matcher returns false
+// immediately.
+template <typename To>
+class WhenDynamicCastToMatcherBase {
+ public:
+  explicit WhenDynamicCastToMatcherBase(const Matcher<To>& matcher)
+      : matcher_(matcher) {}
+
+  void DescribeTo(::std::ostream* os) const {
+    GetCastTypeDescription(os);
+    matcher_.DescribeTo(os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const {
+    GetCastTypeDescription(os);
+    matcher_.DescribeNegationTo(os);
+  }
+
+ protected:
+  const Matcher<To> matcher_;
+
+  static std::string GetToName() {
+    return GetTypeName<To>();
+  }
+
+ private:
+  static void GetCastTypeDescription(::std::ostream* os) {
+    *os << "when dynamic_cast to " << GetToName() << ", ";
+  }
+
+  GTEST_DISALLOW_ASSIGN_(WhenDynamicCastToMatcherBase);
+};
+
+// Primary template.
+// To is a pointer. Cast and forward the result.
+template <typename To>
+class WhenDynamicCastToMatcher : public WhenDynamicCastToMatcherBase<To> {
+ public:
+  explicit WhenDynamicCastToMatcher(const Matcher<To>& matcher)
+      : WhenDynamicCastToMatcherBase<To>(matcher) {}
+
+  template <typename From>
+  bool MatchAndExplain(From from, MatchResultListener* listener) const {
+    To to = dynamic_cast<To>(from);
+    return MatchPrintAndExplain(to, this->matcher_, listener);
+  }
+};
+
+// Specialize for references.
+// In this case we return false if the dynamic_cast fails.
+template <typename To>
+class WhenDynamicCastToMatcher<To&> : public WhenDynamicCastToMatcherBase<To&> {
+ public:
+  explicit WhenDynamicCastToMatcher(const Matcher<To&>& matcher)
+      : WhenDynamicCastToMatcherBase<To&>(matcher) {}
+
+  template <typename From>
+  bool MatchAndExplain(From& from, MatchResultListener* listener) const {
+    // We don't want an std::bad_cast here, so do the cast with pointers.
+    To* to = dynamic_cast<To*>(&from);
+    if (to == nullptr) {
+      *listener << "which cannot be dynamic_cast to " << this->GetToName();
+      return false;
+    }
+    return MatchPrintAndExplain(*to, this->matcher_, listener);
+  }
+};
+#endif  // GTEST_HAS_RTTI
+
+// Implements the Field() matcher for matching a field (i.e. member
+// variable) of an object.
+template <typename Class, typename FieldType>
+class FieldMatcher {
+ public:
+  FieldMatcher(FieldType Class::*field,
+               const Matcher<const FieldType&>& matcher)
+      : field_(field), matcher_(matcher), whose_field_("whose given field ") {}
+
+  FieldMatcher(const std::string& field_name, FieldType Class::*field,
+               const Matcher<const FieldType&>& matcher)
+      : field_(field),
+        matcher_(matcher),
+        whose_field_("whose field `" + field_name + "` ") {}
+
+  void DescribeTo(::std::ostream* os) const {
+    *os << "is an object " << whose_field_;
+    matcher_.DescribeTo(os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const {
+    *os << "is an object " << whose_field_;
+    matcher_.DescribeNegationTo(os);
+  }
+
+  template <typename T>
+  bool MatchAndExplain(const T& value, MatchResultListener* listener) const {
+    // FIXME: The dispatch on std::is_pointer was introduced as a workaround for
+    // a compiler bug, and can now be removed.
+    return MatchAndExplainImpl(
+        typename std::is_pointer<typename std::remove_const<T>::type>::type(),
+        value, listener);
+  }
+
+ private:
+  bool MatchAndExplainImpl(std::false_type /* is_not_pointer */,
+                           const Class& obj,
+                           MatchResultListener* listener) const {
+    *listener << whose_field_ << "is ";
+    return MatchPrintAndExplain(obj.*field_, matcher_, listener);
+  }
+
+  bool MatchAndExplainImpl(std::true_type /* is_pointer */, const Class* p,
+                           MatchResultListener* listener) const {
+    if (p == nullptr) return false;
+
+    *listener << "which points to an object ";
+    // Since *p has a field, it must be a class/struct/union type and
+    // thus cannot be a pointer.  Therefore we pass false_type() as
+    // the first argument.
+    return MatchAndExplainImpl(std::false_type(), *p, listener);
+  }
+
+  const FieldType Class::*field_;
+  const Matcher<const FieldType&> matcher_;
+
+  // Contains either "whose given field " if the name of the field is unknown
+  // or "whose field `name_of_field` " if the name is known.
+  const std::string whose_field_;
+
+  GTEST_DISALLOW_ASSIGN_(FieldMatcher);
+};
+
+// Implements the Property() matcher for matching a property
+// (i.e. return value of a getter method) of an object.
+//
+// Property is a const-qualified member function of Class returning
+// PropertyType.
+template <typename Class, typename PropertyType, typename Property>
+class PropertyMatcher {
+ public:
+  typedef const PropertyType& RefToConstProperty;
+
+  PropertyMatcher(Property property, const Matcher<RefToConstProperty>& matcher)
+      : property_(property),
+        matcher_(matcher),
+        whose_property_("whose given property ") {}
+
+  PropertyMatcher(const std::string& property_name, Property property,
+                  const Matcher<RefToConstProperty>& matcher)
+      : property_(property),
+        matcher_(matcher),
+        whose_property_("whose property `" + property_name + "` ") {}
+
+  void DescribeTo(::std::ostream* os) const {
+    *os << "is an object " << whose_property_;
+    matcher_.DescribeTo(os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const {
+    *os << "is an object " << whose_property_;
+    matcher_.DescribeNegationTo(os);
+  }
+
+  template <typename T>
+  bool MatchAndExplain(const T&value, MatchResultListener* listener) const {
+    return MatchAndExplainImpl(
+        typename std::is_pointer<typename std::remove_const<T>::type>::type(),
+        value, listener);
+  }
+
+ private:
+  bool MatchAndExplainImpl(std::false_type /* is_not_pointer */,
+                           const Class& obj,
+                           MatchResultListener* listener) const {
+    *listener << whose_property_ << "is ";
+    // Cannot pass the return value (for example, int) to MatchPrintAndExplain,
+    // which takes a non-const reference as argument.
+    RefToConstProperty result = (obj.*property_)();
+    return MatchPrintAndExplain(result, matcher_, listener);
+  }
+
+  bool MatchAndExplainImpl(std::true_type /* is_pointer */, const Class* p,
+                           MatchResultListener* listener) const {
+    if (p == nullptr) return false;
+
+    *listener << "which points to an object ";
+    // Since *p has a property method, it must be a class/struct/union
+    // type and thus cannot be a pointer.  Therefore we pass
+    // false_type() as the first argument.
+    return MatchAndExplainImpl(std::false_type(), *p, listener);
+  }
+
+  Property property_;
+  const Matcher<RefToConstProperty> matcher_;
+
+  // Contains either "whose given property " if the name of the property is
+  // unknown or "whose property `name_of_property` " if the name is known.
+  const std::string whose_property_;
+
+  GTEST_DISALLOW_ASSIGN_(PropertyMatcher);
+};
+
+// Type traits specifying various features of different functors for ResultOf.
+// The default template specifies features for functor objects.
+template <typename Functor>
+struct CallableTraits {
+  typedef Functor StorageType;
+
+  static void CheckIsValid(Functor /* functor */) {}
+
+  template <typename T>
+  static auto Invoke(Functor f, const T& arg) -> decltype(f(arg)) {
+    return f(arg);
+  }
+};
+
+// Specialization for function pointers.
+template <typename ArgType, typename ResType>
+struct CallableTraits<ResType(*)(ArgType)> {
+  typedef ResType ResultType;
+  typedef ResType(*StorageType)(ArgType);
+
+  static void CheckIsValid(ResType(*f)(ArgType)) {
+    GTEST_CHECK_(f != nullptr)
+        << "NULL function pointer is passed into ResultOf().";
+  }
+  template <typename T>
+  static ResType Invoke(ResType(*f)(ArgType), T arg) {
+    return (*f)(arg);
+  }
+};
+
+// Implements the ResultOf() matcher for matching a return value of a
+// unary function of an object.
+template <typename Callable, typename InnerMatcher>
+class ResultOfMatcher {
+ public:
+  ResultOfMatcher(Callable callable, InnerMatcher matcher)
+      : callable_(std::move(callable)), matcher_(std::move(matcher)) {
+    CallableTraits<Callable>::CheckIsValid(callable_);
+  }
+
+  template <typename T>
+  operator Matcher<T>() const {
+    return Matcher<T>(new Impl<const T&>(callable_, matcher_));
+  }
+
+ private:
+  typedef typename CallableTraits<Callable>::StorageType CallableStorageType;
+
+  template <typename T>
+  class Impl : public MatcherInterface<T> {
+    using ResultType = decltype(CallableTraits<Callable>::template Invoke<T>(
+        std::declval<CallableStorageType>(), std::declval<T>()));
+
+   public:
+    template <typename M>
+    Impl(const CallableStorageType& callable, const M& matcher)
+        : callable_(callable), matcher_(MatcherCast<ResultType>(matcher)) {}
+
+    void DescribeTo(::std::ostream* os) const override {
+      *os << "is mapped by the given callable to a value that ";
+      matcher_.DescribeTo(os);
+    }
+
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << "is mapped by the given callable to a value that ";
+      matcher_.DescribeNegationTo(os);
+    }
+
+    bool MatchAndExplain(T obj, MatchResultListener* listener) const override {
+      *listener << "which is mapped by the given callable to ";
+      // Cannot pass the return value directly to MatchPrintAndExplain, which
+      // takes a non-const reference as argument.
+      // Also, specifying template argument explicitly is needed because T could
+      // be a non-const reference (e.g. Matcher<Uncopyable&>).
+      ResultType result =
+          CallableTraits<Callable>::template Invoke<T>(callable_, obj);
+      return MatchPrintAndExplain(result, matcher_, listener);
+    }
+
+   private:
+    // Functors often define operator() as non-const method even though
+    // they are actually stateless. But we need to use them even when
+    // 'this' is a const pointer. It's the user's responsibility not to
+    // use stateful callables with ResultOf(), which doesn't guarantee
+    // how many times the callable will be invoked.
+    mutable CallableStorageType callable_;
+    const Matcher<ResultType> matcher_;
+
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };  // class Impl
+
+  const CallableStorageType callable_;
+  const InnerMatcher matcher_;
+
+  GTEST_DISALLOW_ASSIGN_(ResultOfMatcher);
+};
+
+// Implements a matcher that checks the size of an STL-style container.
+template <typename SizeMatcher>
+class SizeIsMatcher {
+ public:
+  explicit SizeIsMatcher(const SizeMatcher& size_matcher)
+       : size_matcher_(size_matcher) {
+  }
+
+  template <typename Container>
+  operator Matcher<Container>() const {
+    return Matcher<Container>(new Impl<const Container&>(size_matcher_));
+  }
+
+  template <typename Container>
+  class Impl : public MatcherInterface<Container> {
+   public:
+    using SizeType = decltype(std::declval<Container>().size());
+    explicit Impl(const SizeMatcher& size_matcher)
+        : size_matcher_(MatcherCast<SizeType>(size_matcher)) {}
+
+    void DescribeTo(::std::ostream* os) const override {
+      *os << "size ";
+      size_matcher_.DescribeTo(os);
+    }
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << "size ";
+      size_matcher_.DescribeNegationTo(os);
+    }
+
+    bool MatchAndExplain(Container container,
+                         MatchResultListener* listener) const override {
+      SizeType size = container.size();
+      StringMatchResultListener size_listener;
+      const bool result = size_matcher_.MatchAndExplain(size, &size_listener);
+      *listener
+          << "whose size " << size << (result ? " matches" : " doesn't match");
+      PrintIfNotEmpty(size_listener.str(), listener->stream());
+      return result;
+    }
+
+   private:
+    const Matcher<SizeType> size_matcher_;
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+
+ private:
+  const SizeMatcher size_matcher_;
+  GTEST_DISALLOW_ASSIGN_(SizeIsMatcher);
+};
+
+// Implements a matcher that checks the begin()..end() distance of an STL-style
+// container.
+template <typename DistanceMatcher>
+class BeginEndDistanceIsMatcher {
+ public:
+  explicit BeginEndDistanceIsMatcher(const DistanceMatcher& distance_matcher)
+      : distance_matcher_(distance_matcher) {}
+
+  template <typename Container>
+  operator Matcher<Container>() const {
+    return Matcher<Container>(new Impl<const Container&>(distance_matcher_));
+  }
+
+  template <typename Container>
+  class Impl : public MatcherInterface<Container> {
+   public:
+    typedef internal::StlContainerView<
+        GTEST_REMOVE_REFERENCE_AND_CONST_(Container)> ContainerView;
+    typedef typename std::iterator_traits<
+        typename ContainerView::type::const_iterator>::difference_type
+        DistanceType;
+    explicit Impl(const DistanceMatcher& distance_matcher)
+        : distance_matcher_(MatcherCast<DistanceType>(distance_matcher)) {}
+
+    void DescribeTo(::std::ostream* os) const override {
+      *os << "distance between begin() and end() ";
+      distance_matcher_.DescribeTo(os);
+    }
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << "distance between begin() and end() ";
+      distance_matcher_.DescribeNegationTo(os);
+    }
+
+    bool MatchAndExplain(Container container,
+                         MatchResultListener* listener) const override {
+      using std::begin;
+      using std::end;
+      DistanceType distance = std::distance(begin(container), end(container));
+      StringMatchResultListener distance_listener;
+      const bool result =
+          distance_matcher_.MatchAndExplain(distance, &distance_listener);
+      *listener << "whose distance between begin() and end() " << distance
+                << (result ? " matches" : " doesn't match");
+      PrintIfNotEmpty(distance_listener.str(), listener->stream());
+      return result;
+    }
+
+   private:
+    const Matcher<DistanceType> distance_matcher_;
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+
+ private:
+  const DistanceMatcher distance_matcher_;
+  GTEST_DISALLOW_ASSIGN_(BeginEndDistanceIsMatcher);
+};
+
+// Implements an equality matcher for any STL-style container whose elements
+// support ==. This matcher is like Eq(), but its failure explanations provide
+// more detailed information that is useful when the container is used as a set.
+// The failure message reports elements that are in one of the operands but not
+// the other. The failure messages do not report duplicate or out-of-order
+// elements in the containers (which don't properly matter to sets, but can
+// occur if the containers are vectors or lists, for example).
+//
+// Uses the container's const_iterator, value_type, operator ==,
+// begin(), and end().
+template <typename Container>
+class ContainerEqMatcher {
+ public:
+  typedef internal::StlContainerView<Container> View;
+  typedef typename View::type StlContainer;
+  typedef typename View::const_reference StlContainerReference;
+
+  static_assert(!std::is_const<Container>::value,
+                "Container type must not be const");
+  static_assert(!std::is_reference<Container>::value,
+                "Container type must not be a reference");
+
+  // We make a copy of expected in case the elements in it are modified
+  // after this matcher is created.
+  explicit ContainerEqMatcher(const Container& expected)
+      : expected_(View::Copy(expected)) {}
+
+  void DescribeTo(::std::ostream* os) const {
+    *os << "equals ";
+    UniversalPrint(expected_, os);
+  }
+  void DescribeNegationTo(::std::ostream* os) const {
+    *os << "does not equal ";
+    UniversalPrint(expected_, os);
+  }
+
+  template <typename LhsContainer>
+  bool MatchAndExplain(const LhsContainer& lhs,
+                       MatchResultListener* listener) const {
+    typedef internal::StlContainerView<
+        typename std::remove_const<LhsContainer>::type>
+        LhsView;
+    typedef typename LhsView::type LhsStlContainer;
+    StlContainerReference lhs_stl_container = LhsView::ConstReference(lhs);
+    if (lhs_stl_container == expected_)
+      return true;
+
+    ::std::ostream* const os = listener->stream();
+    if (os != nullptr) {
+      // Something is different. Check for extra values first.
+      bool printed_header = false;
+      for (typename LhsStlContainer::const_iterator it =
+               lhs_stl_container.begin();
+           it != lhs_stl_container.end(); ++it) {
+        if (internal::ArrayAwareFind(expected_.begin(), expected_.end(), *it) ==
+            expected_.end()) {
+          if (printed_header) {
+            *os << ", ";
+          } else {
+            *os << "which has these unexpected elements: ";
+            printed_header = true;
+          }
+          UniversalPrint(*it, os);
+        }
+      }
+
+      // Now check for missing values.
+      bool printed_header2 = false;
+      for (typename StlContainer::const_iterator it = expected_.begin();
+           it != expected_.end(); ++it) {
+        if (internal::ArrayAwareFind(
+                lhs_stl_container.begin(), lhs_stl_container.end(), *it) ==
+            lhs_stl_container.end()) {
+          if (printed_header2) {
+            *os << ", ";
+          } else {
+            *os << (printed_header ? ",\nand" : "which")
+                << " doesn't have these expected elements: ";
+            printed_header2 = true;
+          }
+          UniversalPrint(*it, os);
+        }
+      }
+    }
+
+    return false;
+  }
+
+ private:
+  const StlContainer expected_;
+
+  GTEST_DISALLOW_ASSIGN_(ContainerEqMatcher);
+};
+
+// A comparator functor that uses the < operator to compare two values.
+struct LessComparator {
+  template <typename T, typename U>
+  bool operator()(const T& lhs, const U& rhs) const { return lhs < rhs; }
+};
+
+// Implements WhenSortedBy(comparator, container_matcher).
+template <typename Comparator, typename ContainerMatcher>
+class WhenSortedByMatcher {
+ public:
+  WhenSortedByMatcher(const Comparator& comparator,
+                      const ContainerMatcher& matcher)
+      : comparator_(comparator), matcher_(matcher) {}
+
+  template <typename LhsContainer>
+  operator Matcher<LhsContainer>() const {
+    return MakeMatcher(new Impl<LhsContainer>(comparator_, matcher_));
+  }
+
+  template <typename LhsContainer>
+  class Impl : public MatcherInterface<LhsContainer> {
+   public:
+    typedef internal::StlContainerView<
+         GTEST_REMOVE_REFERENCE_AND_CONST_(LhsContainer)> LhsView;
+    typedef typename LhsView::type LhsStlContainer;
+    typedef typename LhsView::const_reference LhsStlContainerReference;
+    // Transforms std::pair<const Key, Value> into std::pair<Key, Value>
+    // so that we can match associative containers.
+    typedef typename RemoveConstFromKey<
+        typename LhsStlContainer::value_type>::type LhsValue;
+
+    Impl(const Comparator& comparator, const ContainerMatcher& matcher)
+        : comparator_(comparator), matcher_(matcher) {}
+
+    void DescribeTo(::std::ostream* os) const override {
+      *os << "(when sorted) ";
+      matcher_.DescribeTo(os);
+    }
+
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << "(when sorted) ";
+      matcher_.DescribeNegationTo(os);
+    }
+
+    bool MatchAndExplain(LhsContainer lhs,
+                         MatchResultListener* listener) const override {
+      LhsStlContainerReference lhs_stl_container = LhsView::ConstReference(lhs);
+      ::std::vector<LhsValue> sorted_container(lhs_stl_container.begin(),
+                                               lhs_stl_container.end());
+      ::std::sort(
+           sorted_container.begin(), sorted_container.end(), comparator_);
+
+      if (!listener->IsInterested()) {
+        // If the listener is not interested, we do not need to
+        // construct the inner explanation.
+        return matcher_.Matches(sorted_container);
+      }
+
+      *listener << "which is ";
+      UniversalPrint(sorted_container, listener->stream());
+      *listener << " when sorted";
+
+      StringMatchResultListener inner_listener;
+      const bool match = matcher_.MatchAndExplain(sorted_container,
+                                                  &inner_listener);
+      PrintIfNotEmpty(inner_listener.str(), listener->stream());
+      return match;
+    }
+
+   private:
+    const Comparator comparator_;
+    const Matcher<const ::std::vector<LhsValue>&> matcher_;
+
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(Impl);
+  };
+
+ private:
+  const Comparator comparator_;
+  const ContainerMatcher matcher_;
+
+  GTEST_DISALLOW_ASSIGN_(WhenSortedByMatcher);
+};
+
+// Implements Pointwise(tuple_matcher, rhs_container).  tuple_matcher
+// must be able to be safely cast to Matcher<std::tuple<const T1&, const
+// T2&> >, where T1 and T2 are the types of elements in the LHS
+// container and the RHS container respectively.
+template <typename TupleMatcher, typename RhsContainer>
+class PointwiseMatcher {
+  GTEST_COMPILE_ASSERT_(
+      !IsHashTable<GTEST_REMOVE_REFERENCE_AND_CONST_(RhsContainer)>::value,
+      use_UnorderedPointwise_with_hash_tables);
+
+ public:
+  typedef internal::StlContainerView<RhsContainer> RhsView;
+  typedef typename RhsView::type RhsStlContainer;
+  typedef typename RhsStlContainer::value_type RhsValue;
+
+  static_assert(!std::is_const<RhsContainer>::value,
+                "RhsContainer type must not be const");
+  static_assert(!std::is_reference<RhsContainer>::value,
+                "RhsContainer type must not be a reference");
+
+  // Like ContainerEq, we make a copy of rhs in case the elements in
+  // it are modified after this matcher is created.
+  PointwiseMatcher(const TupleMatcher& tuple_matcher, const RhsContainer& rhs)
+      : tuple_matcher_(tuple_matcher), rhs_(RhsView::Copy(rhs)) {}
+
+  template <typename LhsContainer>
+  operator Matcher<LhsContainer>() const {
+    GTEST_COMPILE_ASSERT_(
+        !IsHashTable<GTEST_REMOVE_REFERENCE_AND_CONST_(LhsContainer)>::value,
+        use_UnorderedPointwise_with_hash_tables);
+
+    return Matcher<LhsContainer>(
+        new Impl<const LhsContainer&>(tuple_matcher_, rhs_));
+  }
+
+  template <typename LhsContainer>
+  class Impl : public MatcherInterface<LhsContainer> {
+   public:
+    typedef internal::StlContainerView<
+         GTEST_REMOVE_REFERENCE_AND_CONST_(LhsContainer)> LhsView;
+    typedef typename LhsView::type LhsStlContainer;
+    typedef typename LhsView::const_reference LhsStlContainerReference;
+    typedef typename LhsStlContainer::value_type LhsValue;
+    // We pass the LHS value and the RHS value to the inner matcher by
+    // reference, as they may be expensive to copy.  We must use tuple
+    // instead of pair here, as a pair cannot hold references (C++ 98,
+    // 20.2.2 [lib.pairs]).
+    typedef ::std::tuple<const LhsValue&, const RhsValue&> InnerMatcherArg;
+
+    Impl(const TupleMatcher& tuple_matcher, const RhsStlContainer& rhs)
+        // mono_tuple_matcher_ holds a monomorphic version of the tuple matcher.
+        : mono_tuple_matcher_(SafeMatcherCast<InnerMatcherArg>(tuple_matcher)),
+          rhs_(rhs) {}
+
+    void DescribeTo(::std::ostream* os) const override {
+      *os << "contains " << rhs_.size()
+          << " values, where each value and its corresponding value in ";
+      UniversalPrinter<RhsStlContainer>::Print(rhs_, os);
+      *os << " ";
+      mono_tuple_matcher_.DescribeTo(os);
+    }
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << "doesn't contain exactly " << rhs_.size()
+          << " values, or contains a value x at some index i"
+          << " where x and the i-th value of ";
+      UniversalPrint(rhs_, os);
+      *os << " ";
+      mono_tuple_matcher_.DescribeNegationTo(os);
+    }
+
+    bool MatchAndExplain(LhsContainer lhs,
+                         MatchResultListener* listener) const override {
+      LhsStlContainerReference lhs_stl_container = LhsView::ConstReference(lhs);
+      const size_t actual_size = lhs_stl_container.size();
+      if (actual_size != rhs_.size()) {
+        *listener << "which contains " << actual_size << " values";
+        return false;
+      }
+
+      typename LhsStlContainer::const_iterator left = lhs_stl_container.begin();
+      typename RhsStlContainer::const_iterator right = rhs_.begin();
+      for (size_t i = 0; i != actual_size; ++i, ++left, ++right) {
+        if (listener->IsInterested()) {
+          StringMatchResultListener inner_listener;
+          // Create InnerMatcherArg as a temporarily object to avoid it outlives
+          // *left and *right. Dereference or the conversion to `const T&` may
+          // return temp objects, e.g for vector<bool>.
+          if (!mono_tuple_matcher_.MatchAndExplain(
+                  InnerMatcherArg(ImplicitCast_<const LhsValue&>(*left),
+                                  ImplicitCast_<const RhsValue&>(*right)),
+                  &inner_listener)) {
+            *listener << "where the value pair (";
+            UniversalPrint(*left, listener->stream());
+            *listener << ", ";
+            UniversalPrint(*right, listener->stream());
+            *listener << ") at index #" << i << " don't match";
+            PrintIfNotEmpty(inner_listener.str(), listener->stream());
+            return false;
+          }
+        } else {
+          if (!mono_tuple_matcher_.Matches(
+                  InnerMatcherArg(ImplicitCast_<const LhsValue&>(*left),
+                                  ImplicitCast_<const RhsValue&>(*right))))
+            return false;
+        }
+      }
+
+      return true;
+    }
+
+   private:
+    const Matcher<InnerMatcherArg> mono_tuple_matcher_;
+    const RhsStlContainer rhs_;
+
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+
+ private:
+  const TupleMatcher tuple_matcher_;
+  const RhsStlContainer rhs_;
+
+  GTEST_DISALLOW_ASSIGN_(PointwiseMatcher);
+};
+
+// Holds the logic common to ContainsMatcherImpl and EachMatcherImpl.
+template <typename Container>
+class QuantifierMatcherImpl : public MatcherInterface<Container> {
+ public:
+  typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer;
+  typedef StlContainerView<RawContainer> View;
+  typedef typename View::type StlContainer;
+  typedef typename View::const_reference StlContainerReference;
+  typedef typename StlContainer::value_type Element;
+
+  template <typename InnerMatcher>
+  explicit QuantifierMatcherImpl(InnerMatcher inner_matcher)
+      : inner_matcher_(
+           testing::SafeMatcherCast<const Element&>(inner_matcher)) {}
+
+  // Checks whether:
+  // * All elements in the container match, if all_elements_should_match.
+  // * Any element in the container matches, if !all_elements_should_match.
+  bool MatchAndExplainImpl(bool all_elements_should_match,
+                           Container container,
+                           MatchResultListener* listener) const {
+    StlContainerReference stl_container = View::ConstReference(container);
+    size_t i = 0;
+    for (typename StlContainer::const_iterator it = stl_container.begin();
+         it != stl_container.end(); ++it, ++i) {
+      StringMatchResultListener inner_listener;
+      const bool matches = inner_matcher_.MatchAndExplain(*it, &inner_listener);
+
+      if (matches != all_elements_should_match) {
+        *listener << "whose element #" << i
+                  << (matches ? " matches" : " doesn't match");
+        PrintIfNotEmpty(inner_listener.str(), listener->stream());
+        return !all_elements_should_match;
+      }
+    }
+    return all_elements_should_match;
+  }
+
+ protected:
+  const Matcher<const Element&> inner_matcher_;
+
+  GTEST_DISALLOW_ASSIGN_(QuantifierMatcherImpl);
+};
+
+// Implements Contains(element_matcher) for the given argument type Container.
+// Symmetric to EachMatcherImpl.
+template <typename Container>
+class ContainsMatcherImpl : public QuantifierMatcherImpl<Container> {
+ public:
+  template <typename InnerMatcher>
+  explicit ContainsMatcherImpl(InnerMatcher inner_matcher)
+      : QuantifierMatcherImpl<Container>(inner_matcher) {}
+
+  // Describes what this matcher does.
+  void DescribeTo(::std::ostream* os) const override {
+    *os << "contains at least one element that ";
+    this->inner_matcher_.DescribeTo(os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const override {
+    *os << "doesn't contain any element that ";
+    this->inner_matcher_.DescribeTo(os);
+  }
+
+  bool MatchAndExplain(Container container,
+                       MatchResultListener* listener) const override {
+    return this->MatchAndExplainImpl(false, container, listener);
+  }
+
+ private:
+  GTEST_DISALLOW_ASSIGN_(ContainsMatcherImpl);
+};
+
+// Implements Each(element_matcher) for the given argument type Container.
+// Symmetric to ContainsMatcherImpl.
+template <typename Container>
+class EachMatcherImpl : public QuantifierMatcherImpl<Container> {
+ public:
+  template <typename InnerMatcher>
+  explicit EachMatcherImpl(InnerMatcher inner_matcher)
+      : QuantifierMatcherImpl<Container>(inner_matcher) {}
+
+  // Describes what this matcher does.
+  void DescribeTo(::std::ostream* os) const override {
+    *os << "only contains elements that ";
+    this->inner_matcher_.DescribeTo(os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const override {
+    *os << "contains some element that ";
+    this->inner_matcher_.DescribeNegationTo(os);
+  }
+
+  bool MatchAndExplain(Container container,
+                       MatchResultListener* listener) const override {
+    return this->MatchAndExplainImpl(true, container, listener);
+  }
+
+ private:
+  GTEST_DISALLOW_ASSIGN_(EachMatcherImpl);
+};
+
+// Implements polymorphic Contains(element_matcher).
+template <typename M>
+class ContainsMatcher {
+ public:
+  explicit ContainsMatcher(M m) : inner_matcher_(m) {}
+
+  template <typename Container>
+  operator Matcher<Container>() const {
+    return Matcher<Container>(
+        new ContainsMatcherImpl<const Container&>(inner_matcher_));
+  }
+
+ private:
+  const M inner_matcher_;
+
+  GTEST_DISALLOW_ASSIGN_(ContainsMatcher);
+};
+
+// Implements polymorphic Each(element_matcher).
+template <typename M>
+class EachMatcher {
+ public:
+  explicit EachMatcher(M m) : inner_matcher_(m) {}
+
+  template <typename Container>
+  operator Matcher<Container>() const {
+    return Matcher<Container>(
+        new EachMatcherImpl<const Container&>(inner_matcher_));
+  }
+
+ private:
+  const M inner_matcher_;
+
+  GTEST_DISALLOW_ASSIGN_(EachMatcher);
+};
+
+struct Rank1 {};
+struct Rank0 : Rank1 {};
+
+namespace pair_getters {
+using std::get;
+template <typename T>
+auto First(T& x, Rank1) -> decltype(get<0>(x)) {  // NOLINT
+  return get<0>(x);
+}
+template <typename T>
+auto First(T& x, Rank0) -> decltype((x.first)) {  // NOLINT
+  return x.first;
+}
+
+template <typename T>
+auto Second(T& x, Rank1) -> decltype(get<1>(x)) {  // NOLINT
+  return get<1>(x);
+}
+template <typename T>
+auto Second(T& x, Rank0) -> decltype((x.second)) {  // NOLINT
+  return x.second;
+}
+}  // namespace pair_getters
+
+// Implements Key(inner_matcher) for the given argument pair type.
+// Key(inner_matcher) matches an std::pair whose 'first' field matches
+// inner_matcher.  For example, Contains(Key(Ge(5))) can be used to match an
+// std::map that contains at least one element whose key is >= 5.
+template <typename PairType>
+class KeyMatcherImpl : public MatcherInterface<PairType> {
+ public:
+  typedef GTEST_REMOVE_REFERENCE_AND_CONST_(PairType) RawPairType;
+  typedef typename RawPairType::first_type KeyType;
+
+  template <typename InnerMatcher>
+  explicit KeyMatcherImpl(InnerMatcher inner_matcher)
+      : inner_matcher_(
+          testing::SafeMatcherCast<const KeyType&>(inner_matcher)) {
+  }
+
+  // Returns true if and only if 'key_value.first' (the key) matches the inner
+  // matcher.
+  bool MatchAndExplain(PairType key_value,
+                       MatchResultListener* listener) const override {
+    StringMatchResultListener inner_listener;
+    const bool match = inner_matcher_.MatchAndExplain(
+        pair_getters::First(key_value, Rank0()), &inner_listener);
+    const std::string explanation = inner_listener.str();
+    if (explanation != "") {
+      *listener << "whose first field is a value " << explanation;
+    }
+    return match;
+  }
+
+  // Describes what this matcher does.
+  void DescribeTo(::std::ostream* os) const override {
+    *os << "has a key that ";
+    inner_matcher_.DescribeTo(os);
+  }
+
+  // Describes what the negation of this matcher does.
+  void DescribeNegationTo(::std::ostream* os) const override {
+    *os << "doesn't have a key that ";
+    inner_matcher_.DescribeTo(os);
+  }
+
+ private:
+  const Matcher<const KeyType&> inner_matcher_;
+
+  GTEST_DISALLOW_ASSIGN_(KeyMatcherImpl);
+};
+
+// Implements polymorphic Key(matcher_for_key).
+template <typename M>
+class KeyMatcher {
+ public:
+  explicit KeyMatcher(M m) : matcher_for_key_(m) {}
+
+  template <typename PairType>
+  operator Matcher<PairType>() const {
+    return Matcher<PairType>(
+        new KeyMatcherImpl<const PairType&>(matcher_for_key_));
+  }
+
+ private:
+  const M matcher_for_key_;
+
+  GTEST_DISALLOW_ASSIGN_(KeyMatcher);
+};
+
+// Implements Pair(first_matcher, second_matcher) for the given argument pair
+// type with its two matchers. See Pair() function below.
+template <typename PairType>
+class PairMatcherImpl : public MatcherInterface<PairType> {
+ public:
+  typedef GTEST_REMOVE_REFERENCE_AND_CONST_(PairType) RawPairType;
+  typedef typename RawPairType::first_type FirstType;
+  typedef typename RawPairType::second_type SecondType;
+
+  template <typename FirstMatcher, typename SecondMatcher>
+  PairMatcherImpl(FirstMatcher first_matcher, SecondMatcher second_matcher)
+      : first_matcher_(
+            testing::SafeMatcherCast<const FirstType&>(first_matcher)),
+        second_matcher_(
+            testing::SafeMatcherCast<const SecondType&>(second_matcher)) {
+  }
+
+  // Describes what this matcher does.
+  void DescribeTo(::std::ostream* os) const override {
+    *os << "has a first field that ";
+    first_matcher_.DescribeTo(os);
+    *os << ", and has a second field that ";
+    second_matcher_.DescribeTo(os);
+  }
+
+  // Describes what the negation of this matcher does.
+  void DescribeNegationTo(::std::ostream* os) const override {
+    *os << "has a first field that ";
+    first_matcher_.DescribeNegationTo(os);
+    *os << ", or has a second field that ";
+    second_matcher_.DescribeNegationTo(os);
+  }
+
+  // Returns true if and only if 'a_pair.first' matches first_matcher and
+  // 'a_pair.second' matches second_matcher.
+  bool MatchAndExplain(PairType a_pair,
+                       MatchResultListener* listener) const override {
+    if (!listener->IsInterested()) {
+      // If the listener is not interested, we don't need to construct the
+      // explanation.
+      return first_matcher_.Matches(pair_getters::First(a_pair, Rank0())) &&
+             second_matcher_.Matches(pair_getters::Second(a_pair, Rank0()));
+    }
+    StringMatchResultListener first_inner_listener;
+    if (!first_matcher_.MatchAndExplain(pair_getters::First(a_pair, Rank0()),
+                                        &first_inner_listener)) {
+      *listener << "whose first field does not match";
+      PrintIfNotEmpty(first_inner_listener.str(), listener->stream());
+      return false;
+    }
+    StringMatchResultListener second_inner_listener;
+    if (!second_matcher_.MatchAndExplain(pair_getters::Second(a_pair, Rank0()),
+                                         &second_inner_listener)) {
+      *listener << "whose second field does not match";
+      PrintIfNotEmpty(second_inner_listener.str(), listener->stream());
+      return false;
+    }
+    ExplainSuccess(first_inner_listener.str(), second_inner_listener.str(),
+                   listener);
+    return true;
+  }
+
+ private:
+  void ExplainSuccess(const std::string& first_explanation,
+                      const std::string& second_explanation,
+                      MatchResultListener* listener) const {
+    *listener << "whose both fields match";
+    if (first_explanation != "") {
+      *listener << ", where the first field is a value " << first_explanation;
+    }
+    if (second_explanation != "") {
+      *listener << ", ";
+      if (first_explanation != "") {
+        *listener << "and ";
+      } else {
+        *listener << "where ";
+      }
+      *listener << "the second field is a value " << second_explanation;
+    }
+  }
+
+  const Matcher<const FirstType&> first_matcher_;
+  const Matcher<const SecondType&> second_matcher_;
+
+  GTEST_DISALLOW_ASSIGN_(PairMatcherImpl);
+};
+
+// Implements polymorphic Pair(first_matcher, second_matcher).
+template <typename FirstMatcher, typename SecondMatcher>
+class PairMatcher {
+ public:
+  PairMatcher(FirstMatcher first_matcher, SecondMatcher second_matcher)
+      : first_matcher_(first_matcher), second_matcher_(second_matcher) {}
+
+  template <typename PairType>
+  operator Matcher<PairType> () const {
+    return Matcher<PairType>(
+        new PairMatcherImpl<const PairType&>(first_matcher_, second_matcher_));
+  }
+
+ private:
+  const FirstMatcher first_matcher_;
+  const SecondMatcher second_matcher_;
+
+  GTEST_DISALLOW_ASSIGN_(PairMatcher);
+};
+
+// Implements ElementsAre() and ElementsAreArray().
+template <typename Container>
+class ElementsAreMatcherImpl : public MatcherInterface<Container> {
+ public:
+  typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer;
+  typedef internal::StlContainerView<RawContainer> View;
+  typedef typename View::type StlContainer;
+  typedef typename View::const_reference StlContainerReference;
+  typedef typename StlContainer::value_type Element;
+
+  // Constructs the matcher from a sequence of element values or
+  // element matchers.
+  template <typename InputIter>
+  ElementsAreMatcherImpl(InputIter first, InputIter last) {
+    while (first != last) {
+      matchers_.push_back(MatcherCast<const Element&>(*first++));
+    }
+  }
+
+  // Describes what this matcher does.
+  void DescribeTo(::std::ostream* os) const override {
+    if (count() == 0) {
+      *os << "is empty";
+    } else if (count() == 1) {
+      *os << "has 1 element that ";
+      matchers_[0].DescribeTo(os);
+    } else {
+      *os << "has " << Elements(count()) << " where\n";
+      for (size_t i = 0; i != count(); ++i) {
+        *os << "element #" << i << " ";
+        matchers_[i].DescribeTo(os);
+        if (i + 1 < count()) {
+          *os << ",\n";
+        }
+      }
+    }
+  }
+
+  // Describes what the negation of this matcher does.
+  void DescribeNegationTo(::std::ostream* os) const override {
+    if (count() == 0) {
+      *os << "isn't empty";
+      return;
+    }
+
+    *os << "doesn't have " << Elements(count()) << ", or\n";
+    for (size_t i = 0; i != count(); ++i) {
+      *os << "element #" << i << " ";
+      matchers_[i].DescribeNegationTo(os);
+      if (i + 1 < count()) {
+        *os << ", or\n";
+      }
+    }
+  }
+
+  bool MatchAndExplain(Container container,
+                       MatchResultListener* listener) const override {
+    // To work with stream-like "containers", we must only walk
+    // through the elements in one pass.
+
+    const bool listener_interested = listener->IsInterested();
+
+    // explanations[i] is the explanation of the element at index i.
+    ::std::vector<std::string> explanations(count());
+    StlContainerReference stl_container = View::ConstReference(container);
+    typename StlContainer::const_iterator it = stl_container.begin();
+    size_t exam_pos = 0;
+    bool mismatch_found = false;  // Have we found a mismatched element yet?
+
+    // Go through the elements and matchers in pairs, until we reach
+    // the end of either the elements or the matchers, or until we find a
+    // mismatch.
+    for (; it != stl_container.end() && exam_pos != count(); ++it, ++exam_pos) {
+      bool match;  // Does the current element match the current matcher?
+      if (listener_interested) {
+        StringMatchResultListener s;
+        match = matchers_[exam_pos].MatchAndExplain(*it, &s);
+        explanations[exam_pos] = s.str();
+      } else {
+        match = matchers_[exam_pos].Matches(*it);
+      }
+
+      if (!match) {
+        mismatch_found = true;
+        break;
+      }
+    }
+    // If mismatch_found is true, 'exam_pos' is the index of the mismatch.
+
+    // Find how many elements the actual container has.  We avoid
+    // calling size() s.t. this code works for stream-like "containers"
+    // that don't define size().
+    size_t actual_count = exam_pos;
+    for (; it != stl_container.end(); ++it) {
+      ++actual_count;
+    }
+
+    if (actual_count != count()) {
+      // The element count doesn't match.  If the container is empty,
+      // there's no need to explain anything as Google Mock already
+      // prints the empty container.  Otherwise we just need to show
+      // how many elements there actually are.
+      if (listener_interested && (actual_count != 0)) {
+        *listener << "which has " << Elements(actual_count);
+      }
+      return false;
+    }
+
+    if (mismatch_found) {
+      // The element count matches, but the exam_pos-th element doesn't match.
+      if (listener_interested) {
+        *listener << "whose element #" << exam_pos << " doesn't match";
+        PrintIfNotEmpty(explanations[exam_pos], listener->stream());
+      }
+      return false;
+    }
+
+    // Every element matches its expectation.  We need to explain why
+    // (the obvious ones can be skipped).
+    if (listener_interested) {
+      bool reason_printed = false;
+      for (size_t i = 0; i != count(); ++i) {
+        const std::string& s = explanations[i];
+        if (!s.empty()) {
+          if (reason_printed) {
+            *listener << ",\nand ";
+          }
+          *listener << "whose element #" << i << " matches, " << s;
+          reason_printed = true;
+        }
+      }
+    }
+    return true;
+  }
+
+ private:
+  static Message Elements(size_t count) {
+    return Message() << count << (count == 1 ? " element" : " elements");
+  }
+
+  size_t count() const { return matchers_.size(); }
+
+  ::std::vector<Matcher<const Element&> > matchers_;
+
+  GTEST_DISALLOW_ASSIGN_(ElementsAreMatcherImpl);
+};
+
+// Connectivity matrix of (elements X matchers), in element-major order.
+// Initially, there are no edges.
+// Use NextGraph() to iterate over all possible edge configurations.
+// Use Randomize() to generate a random edge configuration.
+class GTEST_API_ MatchMatrix {
+ public:
+  MatchMatrix(size_t num_elements, size_t num_matchers)
+      : num_elements_(num_elements),
+        num_matchers_(num_matchers),
+        matched_(num_elements_* num_matchers_, 0) {
+  }
+
+  size_t LhsSize() const { return num_elements_; }
+  size_t RhsSize() const { return num_matchers_; }
+  bool HasEdge(size_t ilhs, size_t irhs) const {
+    return matched_[SpaceIndex(ilhs, irhs)] == 1;
+  }
+  void SetEdge(size_t ilhs, size_t irhs, bool b) {
+    matched_[SpaceIndex(ilhs, irhs)] = b ? 1 : 0;
+  }
+
+  // Treating the connectivity matrix as a (LhsSize()*RhsSize())-bit number,
+  // adds 1 to that number; returns false if incrementing the graph left it
+  // empty.
+  bool NextGraph();
+
+  void Randomize();
+
+  std::string DebugString() const;
+
+ private:
+  size_t SpaceIndex(size_t ilhs, size_t irhs) const {
+    return ilhs * num_matchers_ + irhs;
+  }
+
+  size_t num_elements_;
+  size_t num_matchers_;
+
+  // Each element is a char interpreted as bool. They are stored as a
+  // flattened array in lhs-major order, use 'SpaceIndex()' to translate
+  // a (ilhs, irhs) matrix coordinate into an offset.
+  ::std::vector<char> matched_;
+};
+
+typedef ::std::pair<size_t, size_t> ElementMatcherPair;
+typedef ::std::vector<ElementMatcherPair> ElementMatcherPairs;
+
+// Returns a maximum bipartite matching for the specified graph 'g'.
+// The matching is represented as a vector of {element, matcher} pairs.
+GTEST_API_ ElementMatcherPairs
+FindMaxBipartiteMatching(const MatchMatrix& g);
+
+struct UnorderedMatcherRequire {
+  enum Flags {
+    Superset = 1 << 0,
+    Subset = 1 << 1,
+    ExactMatch = Superset | Subset,
+  };
+};
+
+// Untyped base class for implementing UnorderedElementsAre.  By
+// putting logic that's not specific to the element type here, we
+// reduce binary bloat and increase compilation speed.
+class GTEST_API_ UnorderedElementsAreMatcherImplBase {
+ protected:
+  explicit UnorderedElementsAreMatcherImplBase(
+      UnorderedMatcherRequire::Flags matcher_flags)
+      : match_flags_(matcher_flags) {}
+
+  // A vector of matcher describers, one for each element matcher.
+  // Does not own the describers (and thus can be used only when the
+  // element matchers are alive).
+  typedef ::std::vector<const MatcherDescriberInterface*> MatcherDescriberVec;
+
+  // Describes this UnorderedElementsAre matcher.
+  void DescribeToImpl(::std::ostream* os) const;
+
+  // Describes the negation of this UnorderedElementsAre matcher.
+  void DescribeNegationToImpl(::std::ostream* os) const;
+
+  bool VerifyMatchMatrix(const ::std::vector<std::string>& element_printouts,
+                         const MatchMatrix& matrix,
+                         MatchResultListener* listener) const;
+
+  bool FindPairing(const MatchMatrix& matrix,
+                   MatchResultListener* listener) const;
+
+  MatcherDescriberVec& matcher_describers() {
+    return matcher_describers_;
+  }
+
+  static Message Elements(size_t n) {
+    return Message() << n << " element" << (n == 1 ? "" : "s");
+  }
+
+  UnorderedMatcherRequire::Flags match_flags() const { return match_flags_; }
+
+ private:
+  UnorderedMatcherRequire::Flags match_flags_;
+  MatcherDescriberVec matcher_describers_;
+
+  GTEST_DISALLOW_ASSIGN_(UnorderedElementsAreMatcherImplBase);
+};
+
+// Implements UnorderedElementsAre, UnorderedElementsAreArray, IsSubsetOf, and
+// IsSupersetOf.
+template <typename Container>
+class UnorderedElementsAreMatcherImpl
+    : public MatcherInterface<Container>,
+      public UnorderedElementsAreMatcherImplBase {
+ public:
+  typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer;
+  typedef internal::StlContainerView<RawContainer> View;
+  typedef typename View::type StlContainer;
+  typedef typename View::const_reference StlContainerReference;
+  typedef typename StlContainer::const_iterator StlContainerConstIterator;
+  typedef typename StlContainer::value_type Element;
+
+  template <typename InputIter>
+  UnorderedElementsAreMatcherImpl(UnorderedMatcherRequire::Flags matcher_flags,
+                                  InputIter first, InputIter last)
+      : UnorderedElementsAreMatcherImplBase(matcher_flags) {
+    for (; first != last; ++first) {
+      matchers_.push_back(MatcherCast<const Element&>(*first));
+      matcher_describers().push_back(matchers_.back().GetDescriber());
+    }
+  }
+
+  // Describes what this matcher does.
+  void DescribeTo(::std::ostream* os) const override {
+    return UnorderedElementsAreMatcherImplBase::DescribeToImpl(os);
+  }
+
+  // Describes what the negation of this matcher does.
+  void DescribeNegationTo(::std::ostream* os) const override {
+    return UnorderedElementsAreMatcherImplBase::DescribeNegationToImpl(os);
+  }
+
+  bool MatchAndExplain(Container container,
+                       MatchResultListener* listener) const override {
+    StlContainerReference stl_container = View::ConstReference(container);
+    ::std::vector<std::string> element_printouts;
+    MatchMatrix matrix =
+        AnalyzeElements(stl_container.begin(), stl_container.end(),
+                        &element_printouts, listener);
+
+    if (matrix.LhsSize() == 0 && matrix.RhsSize() == 0) {
+      return true;
+    }
+
+    if (match_flags() == UnorderedMatcherRequire::ExactMatch) {
+      if (matrix.LhsSize() != matrix.RhsSize()) {
+        // The element count doesn't match.  If the container is empty,
+        // there's no need to explain anything as Google Mock already
+        // prints the empty container. Otherwise we just need to show
+        // how many elements there actually are.
+        if (matrix.LhsSize() != 0 && listener->IsInterested()) {
+          *listener << "which has " << Elements(matrix.LhsSize());
+        }
+        return false;
+      }
+    }
+
+    return VerifyMatchMatrix(element_printouts, matrix, listener) &&
+           FindPairing(matrix, listener);
+  }
+
+ private:
+  template <typename ElementIter>
+  MatchMatrix AnalyzeElements(ElementIter elem_first, ElementIter elem_last,
+                              ::std::vector<std::string>* element_printouts,
+                              MatchResultListener* listener) const {
+    element_printouts->clear();
+    ::std::vector<char> did_match;
+    size_t num_elements = 0;
+    for (; elem_first != elem_last; ++num_elements, ++elem_first) {
+      if (listener->IsInterested()) {
+        element_printouts->push_back(PrintToString(*elem_first));
+      }
+      for (size_t irhs = 0; irhs != matchers_.size(); ++irhs) {
+        did_match.push_back(Matches(matchers_[irhs])(*elem_first));
+      }
+    }
+
+    MatchMatrix matrix(num_elements, matchers_.size());
+    ::std::vector<char>::const_iterator did_match_iter = did_match.begin();
+    for (size_t ilhs = 0; ilhs != num_elements; ++ilhs) {
+      for (size_t irhs = 0; irhs != matchers_.size(); ++irhs) {
+        matrix.SetEdge(ilhs, irhs, *did_match_iter++ != 0);
+      }
+    }
+    return matrix;
+  }
+
+  ::std::vector<Matcher<const Element&> > matchers_;
+
+  GTEST_DISALLOW_ASSIGN_(UnorderedElementsAreMatcherImpl);
+};
+
+// Functor for use in TransformTuple.
+// Performs MatcherCast<Target> on an input argument of any type.
+template <typename Target>
+struct CastAndAppendTransform {
+  template <typename Arg>
+  Matcher<Target> operator()(const Arg& a) const {
+    return MatcherCast<Target>(a);
+  }
+};
+
+// Implements UnorderedElementsAre.
+template <typename MatcherTuple>
+class UnorderedElementsAreMatcher {
+ public:
+  explicit UnorderedElementsAreMatcher(const MatcherTuple& args)
+      : matchers_(args) {}
+
+  template <typename Container>
+  operator Matcher<Container>() const {
+    typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer;
+    typedef typename internal::StlContainerView<RawContainer>::type View;
+    typedef typename View::value_type Element;
+    typedef ::std::vector<Matcher<const Element&> > MatcherVec;
+    MatcherVec matchers;
+    matchers.reserve(::std::tuple_size<MatcherTuple>::value);
+    TransformTupleValues(CastAndAppendTransform<const Element&>(), matchers_,
+                         ::std::back_inserter(matchers));
+    return Matcher<Container>(
+        new UnorderedElementsAreMatcherImpl<const Container&>(
+            UnorderedMatcherRequire::ExactMatch, matchers.begin(),
+            matchers.end()));
+  }
+
+ private:
+  const MatcherTuple matchers_;
+  GTEST_DISALLOW_ASSIGN_(UnorderedElementsAreMatcher);
+};
+
+// Implements ElementsAre.
+template <typename MatcherTuple>
+class ElementsAreMatcher {
+ public:
+  explicit ElementsAreMatcher(const MatcherTuple& args) : matchers_(args) {}
+
+  template <typename Container>
+  operator Matcher<Container>() const {
+    GTEST_COMPILE_ASSERT_(
+        !IsHashTable<GTEST_REMOVE_REFERENCE_AND_CONST_(Container)>::value ||
+            ::std::tuple_size<MatcherTuple>::value < 2,
+        use_UnorderedElementsAre_with_hash_tables);
+
+    typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer;
+    typedef typename internal::StlContainerView<RawContainer>::type View;
+    typedef typename View::value_type Element;
+    typedef ::std::vector<Matcher<const Element&> > MatcherVec;
+    MatcherVec matchers;
+    matchers.reserve(::std::tuple_size<MatcherTuple>::value);
+    TransformTupleValues(CastAndAppendTransform<const Element&>(), matchers_,
+                         ::std::back_inserter(matchers));
+    return Matcher<Container>(new ElementsAreMatcherImpl<const Container&>(
+        matchers.begin(), matchers.end()));
+  }
+
+ private:
+  const MatcherTuple matchers_;
+  GTEST_DISALLOW_ASSIGN_(ElementsAreMatcher);
+};
+
+// Implements UnorderedElementsAreArray(), IsSubsetOf(), and IsSupersetOf().
+template <typename T>
+class UnorderedElementsAreArrayMatcher {
+ public:
+  template <typename Iter>
+  UnorderedElementsAreArrayMatcher(UnorderedMatcherRequire::Flags match_flags,
+                                   Iter first, Iter last)
+      : match_flags_(match_flags), matchers_(first, last) {}
+
+  template <typename Container>
+  operator Matcher<Container>() const {
+    return Matcher<Container>(
+        new UnorderedElementsAreMatcherImpl<const Container&>(
+            match_flags_, matchers_.begin(), matchers_.end()));
+  }
+
+ private:
+  UnorderedMatcherRequire::Flags match_flags_;
+  ::std::vector<T> matchers_;
+
+  GTEST_DISALLOW_ASSIGN_(UnorderedElementsAreArrayMatcher);
+};
+
+// Implements ElementsAreArray().
+template <typename T>
+class ElementsAreArrayMatcher {
+ public:
+  template <typename Iter>
+  ElementsAreArrayMatcher(Iter first, Iter last) : matchers_(first, last) {}
+
+  template <typename Container>
+  operator Matcher<Container>() const {
+    GTEST_COMPILE_ASSERT_(
+        !IsHashTable<GTEST_REMOVE_REFERENCE_AND_CONST_(Container)>::value,
+        use_UnorderedElementsAreArray_with_hash_tables);
+
+    return Matcher<Container>(new ElementsAreMatcherImpl<const Container&>(
+        matchers_.begin(), matchers_.end()));
+  }
+
+ private:
+  const ::std::vector<T> matchers_;
+
+  GTEST_DISALLOW_ASSIGN_(ElementsAreArrayMatcher);
+};
+
+// Given a 2-tuple matcher tm of type Tuple2Matcher and a value second
+// of type Second, BoundSecondMatcher<Tuple2Matcher, Second>(tm,
+// second) is a polymorphic matcher that matches a value x if and only if
+// tm matches tuple (x, second).  Useful for implementing
+// UnorderedPointwise() in terms of UnorderedElementsAreArray().
+//
+// BoundSecondMatcher is copyable and assignable, as we need to put
+// instances of this class in a vector when implementing
+// UnorderedPointwise().
+template <typename Tuple2Matcher, typename Second>
+class BoundSecondMatcher {
+ public:
+  BoundSecondMatcher(const Tuple2Matcher& tm, const Second& second)
+      : tuple2_matcher_(tm), second_value_(second) {}
+
+  template <typename T>
+  operator Matcher<T>() const {
+    return MakeMatcher(new Impl<T>(tuple2_matcher_, second_value_));
+  }
+
+  // We have to define this for UnorderedPointwise() to compile in
+  // C++98 mode, as it puts BoundSecondMatcher instances in a vector,
+  // which requires the elements to be assignable in C++98.  The
+  // compiler cannot generate the operator= for us, as Tuple2Matcher
+  // and Second may not be assignable.
+  //
+  // However, this should never be called, so the implementation just
+  // need to assert.
+  void operator=(const BoundSecondMatcher& /*rhs*/) {
+    GTEST_LOG_(FATAL) << "BoundSecondMatcher should never be assigned.";
+  }
+
+ private:
+  template <typename T>
+  class Impl : public MatcherInterface<T> {
+   public:
+    typedef ::std::tuple<T, Second> ArgTuple;
+
+    Impl(const Tuple2Matcher& tm, const Second& second)
+        : mono_tuple2_matcher_(SafeMatcherCast<const ArgTuple&>(tm)),
+          second_value_(second) {}
+
+    void DescribeTo(::std::ostream* os) const override {
+      *os << "and ";
+      UniversalPrint(second_value_, os);
+      *os << " ";
+      mono_tuple2_matcher_.DescribeTo(os);
+    }
+
+    bool MatchAndExplain(T x, MatchResultListener* listener) const override {
+      return mono_tuple2_matcher_.MatchAndExplain(ArgTuple(x, second_value_),
+                                                  listener);
+    }
+
+   private:
+    const Matcher<const ArgTuple&> mono_tuple2_matcher_;
+    const Second second_value_;
+
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+
+  const Tuple2Matcher tuple2_matcher_;
+  const Second second_value_;
+};
+
+// Given a 2-tuple matcher tm and a value second,
+// MatcherBindSecond(tm, second) returns a matcher that matches a
+// value x if and only if tm matches tuple (x, second).  Useful for
+// implementing UnorderedPointwise() in terms of UnorderedElementsAreArray().
+template <typename Tuple2Matcher, typename Second>
+BoundSecondMatcher<Tuple2Matcher, Second> MatcherBindSecond(
+    const Tuple2Matcher& tm, const Second& second) {
+  return BoundSecondMatcher<Tuple2Matcher, Second>(tm, second);
+}
+
+// Returns the description for a matcher defined using the MATCHER*()
+// macro where the user-supplied description string is "", if
+// 'negation' is false; otherwise returns the description of the
+// negation of the matcher.  'param_values' contains a list of strings
+// that are the print-out of the matcher's parameters.
+GTEST_API_ std::string FormatMatcherDescription(bool negation,
+                                                const char* matcher_name,
+                                                const Strings& param_values);
+
+// Implements a matcher that checks the value of a optional<> type variable.
+template <typename ValueMatcher>
+class OptionalMatcher {
+ public:
+  explicit OptionalMatcher(const ValueMatcher& value_matcher)
+      : value_matcher_(value_matcher) {}
+
+  template <typename Optional>
+  operator Matcher<Optional>() const {
+    return Matcher<Optional>(new Impl<const Optional&>(value_matcher_));
+  }
+
+  template <typename Optional>
+  class Impl : public MatcherInterface<Optional> {
+   public:
+    typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Optional) OptionalView;
+    typedef typename OptionalView::value_type ValueType;
+    explicit Impl(const ValueMatcher& value_matcher)
+        : value_matcher_(MatcherCast<ValueType>(value_matcher)) {}
+
+    void DescribeTo(::std::ostream* os) const override {
+      *os << "value ";
+      value_matcher_.DescribeTo(os);
+    }
+
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << "value ";
+      value_matcher_.DescribeNegationTo(os);
+    }
+
+    bool MatchAndExplain(Optional optional,
+                         MatchResultListener* listener) const override {
+      if (!optional) {
+        *listener << "which is not engaged";
+        return false;
+      }
+      const ValueType& value = *optional;
+      StringMatchResultListener value_listener;
+      const bool match = value_matcher_.MatchAndExplain(value, &value_listener);
+      *listener << "whose value " << PrintToString(value)
+                << (match ? " matches" : " doesn't match");
+      PrintIfNotEmpty(value_listener.str(), listener->stream());
+      return match;
+    }
+
+   private:
+    const Matcher<ValueType> value_matcher_;
+    GTEST_DISALLOW_ASSIGN_(Impl);
+  };
+
+ private:
+  const ValueMatcher value_matcher_;
+  GTEST_DISALLOW_ASSIGN_(OptionalMatcher);
+};
+
+namespace variant_matcher {
+// Overloads to allow VariantMatcher to do proper ADL lookup.
+template <typename T>
+void holds_alternative() {}
+template <typename T>
+void get() {}
+
+// Implements a matcher that checks the value of a variant<> type variable.
+template <typename T>
+class VariantMatcher {
+ public:
+  explicit VariantMatcher(::testing::Matcher<const T&> matcher)
+      : matcher_(std::move(matcher)) {}
+
+  template <typename Variant>
+  bool MatchAndExplain(const Variant& value,
+                       ::testing::MatchResultListener* listener) const {
+    using std::get;
+    if (!listener->IsInterested()) {
+      return holds_alternative<T>(value) && matcher_.Matches(get<T>(value));
+    }
+
+    if (!holds_alternative<T>(value)) {
+      *listener << "whose value is not of type '" << GetTypeName() << "'";
+      return false;
+    }
+
+    const T& elem = get<T>(value);
+    StringMatchResultListener elem_listener;
+    const bool match = matcher_.MatchAndExplain(elem, &elem_listener);
+    *listener << "whose value " << PrintToString(elem)
+              << (match ? " matches" : " doesn't match");
+    PrintIfNotEmpty(elem_listener.str(), listener->stream());
+    return match;
+  }
+
+  void DescribeTo(std::ostream* os) const {
+    *os << "is a variant<> with value of type '" << GetTypeName()
+        << "' and the value ";
+    matcher_.DescribeTo(os);
+  }
+
+  void DescribeNegationTo(std::ostream* os) const {
+    *os << "is a variant<> with value of type other than '" << GetTypeName()
+        << "' or the value ";
+    matcher_.DescribeNegationTo(os);
+  }
+
+ private:
+  static std::string GetTypeName() {
+#if GTEST_HAS_RTTI
+    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(
+        return internal::GetTypeName<T>());
+#endif
+    return "the element type";
+  }
+
+  const ::testing::Matcher<const T&> matcher_;
+};
+
+}  // namespace variant_matcher
+
+namespace any_cast_matcher {
+
+// Overloads to allow AnyCastMatcher to do proper ADL lookup.
+template <typename T>
+void any_cast() {}
+
+// Implements a matcher that any_casts the value.
+template <typename T>
+class AnyCastMatcher {
+ public:
+  explicit AnyCastMatcher(const ::testing::Matcher<const T&>& matcher)
+      : matcher_(matcher) {}
+
+  template <typename AnyType>
+  bool MatchAndExplain(const AnyType& value,
+                       ::testing::MatchResultListener* listener) const {
+    if (!listener->IsInterested()) {
+      const T* ptr = any_cast<T>(&value);
+      return ptr != nullptr && matcher_.Matches(*ptr);
+    }
+
+    const T* elem = any_cast<T>(&value);
+    if (elem == nullptr) {
+      *listener << "whose value is not of type '" << GetTypeName() << "'";
+      return false;
+    }
+
+    StringMatchResultListener elem_listener;
+    const bool match = matcher_.MatchAndExplain(*elem, &elem_listener);
+    *listener << "whose value " << PrintToString(*elem)
+              << (match ? " matches" : " doesn't match");
+    PrintIfNotEmpty(elem_listener.str(), listener->stream());
+    return match;
+  }
+
+  void DescribeTo(std::ostream* os) const {
+    *os << "is an 'any' type with value of type '" << GetTypeName()
+        << "' and the value ";
+    matcher_.DescribeTo(os);
+  }
+
+  void DescribeNegationTo(std::ostream* os) const {
+    *os << "is an 'any' type with value of type other than '" << GetTypeName()
+        << "' or the value ";
+    matcher_.DescribeNegationTo(os);
+  }
+
+ private:
+  static std::string GetTypeName() {
+#if GTEST_HAS_RTTI
+    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(
+        return internal::GetTypeName<T>());
+#endif
+    return "the element type";
+  }
+
+  const ::testing::Matcher<const T&> matcher_;
+};
+
+}  // namespace any_cast_matcher
+
+// Implements the Args() matcher.
+template <class ArgsTuple, size_t... k>
+class ArgsMatcherImpl : public MatcherInterface<ArgsTuple> {
+ public:
+  using RawArgsTuple = typename std::decay<ArgsTuple>::type;
+  using SelectedArgs =
+      std::tuple<typename std::tuple_element<k, RawArgsTuple>::type...>;
+  using MonomorphicInnerMatcher = Matcher<const SelectedArgs&>;
+
+  template <typename InnerMatcher>
+  explicit ArgsMatcherImpl(const InnerMatcher& inner_matcher)
+      : inner_matcher_(SafeMatcherCast<const SelectedArgs&>(inner_matcher)) {}
+
+  bool MatchAndExplain(ArgsTuple args,
+                       MatchResultListener* listener) const override {
+    // Workaround spurious C4100 on MSVC<=15.7 when k is empty.
+    (void)args;
+    const SelectedArgs& selected_args =
+        std::forward_as_tuple(std::get<k>(args)...);
+    if (!listener->IsInterested()) return inner_matcher_.Matches(selected_args);
+
+    PrintIndices(listener->stream());
+    *listener << "are " << PrintToString(selected_args);
+
+    StringMatchResultListener inner_listener;
+    const bool match =
+        inner_matcher_.MatchAndExplain(selected_args, &inner_listener);
+    PrintIfNotEmpty(inner_listener.str(), listener->stream());
+    return match;
+  }
+
+  void DescribeTo(::std::ostream* os) const override {
+    *os << "are a tuple ";
+    PrintIndices(os);
+    inner_matcher_.DescribeTo(os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const override {
+    *os << "are a tuple ";
+    PrintIndices(os);
+    inner_matcher_.DescribeNegationTo(os);
+  }
+
+ private:
+  // Prints the indices of the selected fields.
+  static void PrintIndices(::std::ostream* os) {
+    *os << "whose fields (";
+    const char* sep = "";
+    // Workaround spurious C4189 on MSVC<=15.7 when k is empty.
+    (void)sep;
+    const char* dummy[] = {"", (*os << sep << "#" << k, sep = ", ")...};
+    (void)dummy;
+    *os << ") ";
+  }
+
+  MonomorphicInnerMatcher inner_matcher_;
+};
+
+template <class InnerMatcher, size_t... k>
+class ArgsMatcher {
+ public:
+  explicit ArgsMatcher(InnerMatcher inner_matcher)
+      : inner_matcher_(std::move(inner_matcher)) {}
+
+  template <typename ArgsTuple>
+  operator Matcher<ArgsTuple>() const {  // NOLINT
+    return MakeMatcher(new ArgsMatcherImpl<ArgsTuple, k...>(inner_matcher_));
+  }
+
+ private:
+  InnerMatcher inner_matcher_;
+};
+
+}  // namespace internal
+
+// ElementsAreArray(iterator_first, iterator_last)
+// ElementsAreArray(pointer, count)
+// ElementsAreArray(array)
+// ElementsAreArray(container)
+// ElementsAreArray({ e1, e2, ..., en })
+//
+// The ElementsAreArray() functions are like ElementsAre(...), except
+// that they are given a homogeneous sequence rather than taking each
+// element as a function argument. The sequence can be specified as an
+// array, a pointer and count, a vector, an initializer list, or an
+// STL iterator range. In each of these cases, the underlying sequence
+// can be either a sequence of values or a sequence of matchers.
+//
+// All forms of ElementsAreArray() make a copy of the input matcher sequence.
+
+template <typename Iter>
+inline internal::ElementsAreArrayMatcher<
+    typename ::std::iterator_traits<Iter>::value_type>
+ElementsAreArray(Iter first, Iter last) {
+  typedef typename ::std::iterator_traits<Iter>::value_type T;
+  return internal::ElementsAreArrayMatcher<T>(first, last);
+}
+
+template <typename T>
+inline internal::ElementsAreArrayMatcher<T> ElementsAreArray(
+    const T* pointer, size_t count) {
+  return ElementsAreArray(pointer, pointer + count);
+}
+
+template <typename T, size_t N>
+inline internal::ElementsAreArrayMatcher<T> ElementsAreArray(
+    const T (&array)[N]) {
+  return ElementsAreArray(array, N);
+}
+
+template <typename Container>
+inline internal::ElementsAreArrayMatcher<typename Container::value_type>
+ElementsAreArray(const Container& container) {
+  return ElementsAreArray(container.begin(), container.end());
+}
+
+template <typename T>
+inline internal::ElementsAreArrayMatcher<T>
+ElementsAreArray(::std::initializer_list<T> xs) {
+  return ElementsAreArray(xs.begin(), xs.end());
+}
+
+// UnorderedElementsAreArray(iterator_first, iterator_last)
+// UnorderedElementsAreArray(pointer, count)
+// UnorderedElementsAreArray(array)
+// UnorderedElementsAreArray(container)
+// UnorderedElementsAreArray({ e1, e2, ..., en })
+//
+// UnorderedElementsAreArray() verifies that a bijective mapping onto a
+// collection of matchers exists.
+//
+// The matchers can be specified as an array, a pointer and count, a container,
+// an initializer list, or an STL iterator range. In each of these cases, the
+// underlying matchers can be either values or matchers.
+
+template <typename Iter>
+inline internal::UnorderedElementsAreArrayMatcher<
+    typename ::std::iterator_traits<Iter>::value_type>
+UnorderedElementsAreArray(Iter first, Iter last) {
+  typedef typename ::std::iterator_traits<Iter>::value_type T;
+  return internal::UnorderedElementsAreArrayMatcher<T>(
+      internal::UnorderedMatcherRequire::ExactMatch, first, last);
+}
+
+template <typename T>
+inline internal::UnorderedElementsAreArrayMatcher<T>
+UnorderedElementsAreArray(const T* pointer, size_t count) {
+  return UnorderedElementsAreArray(pointer, pointer + count);
+}
+
+template <typename T, size_t N>
+inline internal::UnorderedElementsAreArrayMatcher<T>
+UnorderedElementsAreArray(const T (&array)[N]) {
+  return UnorderedElementsAreArray(array, N);
+}
+
+template <typename Container>
+inline internal::UnorderedElementsAreArrayMatcher<
+    typename Container::value_type>
+UnorderedElementsAreArray(const Container& container) {
+  return UnorderedElementsAreArray(container.begin(), container.end());
+}
+
+template <typename T>
+inline internal::UnorderedElementsAreArrayMatcher<T>
+UnorderedElementsAreArray(::std::initializer_list<T> xs) {
+  return UnorderedElementsAreArray(xs.begin(), xs.end());
+}
+
+// _ is a matcher that matches anything of any type.
+//
+// This definition is fine as:
+//
+//   1. The C++ standard permits using the name _ in a namespace that
+//      is not the global namespace or ::std.
+//   2. The AnythingMatcher class has no data member or constructor,
+//      so it's OK to create global variables of this type.
+//   3. c-style has approved of using _ in this case.
+const internal::AnythingMatcher _ = {};
+// Creates a matcher that matches any value of the given type T.
+template <typename T>
+inline Matcher<T> A() {
+  return Matcher<T>(new internal::AnyMatcherImpl<T>());
+}
+
+// Creates a matcher that matches any value of the given type T.
+template <typename T>
+inline Matcher<T> An() { return A<T>(); }
+
+template <typename T, typename M>
+Matcher<T> internal::MatcherCastImpl<T, M>::CastImpl(
+    const M& value, std::false_type /* convertible_to_matcher */,
+    std::false_type /* convertible_to_T */) {
+  return Eq(value);
+}
+
+// Creates a polymorphic matcher that matches any NULL pointer.
+inline PolymorphicMatcher<internal::IsNullMatcher > IsNull() {
+  return MakePolymorphicMatcher(internal::IsNullMatcher());
+}
+
+// Creates a polymorphic matcher that matches any non-NULL pointer.
+// This is convenient as Not(NULL) doesn't compile (the compiler
+// thinks that that expression is comparing a pointer with an integer).
+inline PolymorphicMatcher<internal::NotNullMatcher > NotNull() {
+  return MakePolymorphicMatcher(internal::NotNullMatcher());
+}
+
+// Creates a polymorphic matcher that matches any argument that
+// references variable x.
+template <typename T>
+inline internal::RefMatcher<T&> Ref(T& x) {  // NOLINT
+  return internal::RefMatcher<T&>(x);
+}
+
+// Creates a matcher that matches any double argument approximately
+// equal to rhs, where two NANs are considered unequal.
+inline internal::FloatingEqMatcher<double> DoubleEq(double rhs) {
+  return internal::FloatingEqMatcher<double>(rhs, false);
+}
+
+// Creates a matcher that matches any double argument approximately
+// equal to rhs, including NaN values when rhs is NaN.
+inline internal::FloatingEqMatcher<double> NanSensitiveDoubleEq(double rhs) {
+  return internal::FloatingEqMatcher<double>(rhs, true);
+}
+
+// Creates a matcher that matches any double argument approximately equal to
+// rhs, up to the specified max absolute error bound, where two NANs are
+// considered unequal.  The max absolute error bound must be non-negative.
+inline internal::FloatingEqMatcher<double> DoubleNear(
+    double rhs, double max_abs_error) {
+  return internal::FloatingEqMatcher<double>(rhs, false, max_abs_error);
+}
+
+// Creates a matcher that matches any double argument approximately equal to
+// rhs, up to the specified max absolute error bound, including NaN values when
+// rhs is NaN.  The max absolute error bound must be non-negative.
+inline internal::FloatingEqMatcher<double> NanSensitiveDoubleNear(
+    double rhs, double max_abs_error) {
+  return internal::FloatingEqMatcher<double>(rhs, true, max_abs_error);
+}
+
+// Creates a matcher that matches any float argument approximately
+// equal to rhs, where two NANs are considered unequal.
+inline internal::FloatingEqMatcher<float> FloatEq(float rhs) {
+  return internal::FloatingEqMatcher<float>(rhs, false);
+}
+
+// Creates a matcher that matches any float argument approximately
+// equal to rhs, including NaN values when rhs is NaN.
+inline internal::FloatingEqMatcher<float> NanSensitiveFloatEq(float rhs) {
+  return internal::FloatingEqMatcher<float>(rhs, true);
+}
+
+// Creates a matcher that matches any float argument approximately equal to
+// rhs, up to the specified max absolute error bound, where two NANs are
+// considered unequal.  The max absolute error bound must be non-negative.
+inline internal::FloatingEqMatcher<float> FloatNear(
+    float rhs, float max_abs_error) {
+  return internal::FloatingEqMatcher<float>(rhs, false, max_abs_error);
+}
+
+// Creates a matcher that matches any float argument approximately equal to
+// rhs, up to the specified max absolute error bound, including NaN values when
+// rhs is NaN.  The max absolute error bound must be non-negative.
+inline internal::FloatingEqMatcher<float> NanSensitiveFloatNear(
+    float rhs, float max_abs_error) {
+  return internal::FloatingEqMatcher<float>(rhs, true, max_abs_error);
+}
+
+// Creates a matcher that matches a pointer (raw or smart) that points
+// to a value that matches inner_matcher.
+template <typename InnerMatcher>
+inline internal::PointeeMatcher<InnerMatcher> Pointee(
+    const InnerMatcher& inner_matcher) {
+  return internal::PointeeMatcher<InnerMatcher>(inner_matcher);
+}
+
+#if GTEST_HAS_RTTI
+// Creates a matcher that matches a pointer or reference that matches
+// inner_matcher when dynamic_cast<To> is applied.
+// The result of dynamic_cast<To> is forwarded to the inner matcher.
+// If To is a pointer and the cast fails, the inner matcher will receive NULL.
+// If To is a reference and the cast fails, this matcher returns false
+// immediately.
+template <typename To>
+inline PolymorphicMatcher<internal::WhenDynamicCastToMatcher<To> >
+WhenDynamicCastTo(const Matcher<To>& inner_matcher) {
+  return MakePolymorphicMatcher(
+      internal::WhenDynamicCastToMatcher<To>(inner_matcher));
+}
+#endif  // GTEST_HAS_RTTI
+
+// Creates a matcher that matches an object whose given field matches
+// 'matcher'.  For example,
+//   Field(&Foo::number, Ge(5))
+// matches a Foo object x if and only if x.number >= 5.
+template <typename Class, typename FieldType, typename FieldMatcher>
+inline PolymorphicMatcher<
+  internal::FieldMatcher<Class, FieldType> > Field(
+    FieldType Class::*field, const FieldMatcher& matcher) {
+  return MakePolymorphicMatcher(
+      internal::FieldMatcher<Class, FieldType>(
+          field, MatcherCast<const FieldType&>(matcher)));
+  // The call to MatcherCast() is required for supporting inner
+  // matchers of compatible types.  For example, it allows
+  //   Field(&Foo::bar, m)
+  // to compile where bar is an int32 and m is a matcher for int64.
+}
+
+// Same as Field() but also takes the name of the field to provide better error
+// messages.
+template <typename Class, typename FieldType, typename FieldMatcher>
+inline PolymorphicMatcher<internal::FieldMatcher<Class, FieldType> > Field(
+    const std::string& field_name, FieldType Class::*field,
+    const FieldMatcher& matcher) {
+  return MakePolymorphicMatcher(internal::FieldMatcher<Class, FieldType>(
+      field_name, field, MatcherCast<const FieldType&>(matcher)));
+}
+
+// Creates a matcher that matches an object whose given property
+// matches 'matcher'.  For example,
+//   Property(&Foo::str, StartsWith("hi"))
+// matches a Foo object x if and only if x.str() starts with "hi".
+template <typename Class, typename PropertyType, typename PropertyMatcher>
+inline PolymorphicMatcher<internal::PropertyMatcher<
+    Class, PropertyType, PropertyType (Class::*)() const> >
+Property(PropertyType (Class::*property)() const,
+         const PropertyMatcher& matcher) {
+  return MakePolymorphicMatcher(
+      internal::PropertyMatcher<Class, PropertyType,
+                                PropertyType (Class::*)() const>(
+          property, MatcherCast<const PropertyType&>(matcher)));
+  // The call to MatcherCast() is required for supporting inner
+  // matchers of compatible types.  For example, it allows
+  //   Property(&Foo::bar, m)
+  // to compile where bar() returns an int32 and m is a matcher for int64.
+}
+
+// Same as Property() above, but also takes the name of the property to provide
+// better error messages.
+template <typename Class, typename PropertyType, typename PropertyMatcher>
+inline PolymorphicMatcher<internal::PropertyMatcher<
+    Class, PropertyType, PropertyType (Class::*)() const> >
+Property(const std::string& property_name,
+         PropertyType (Class::*property)() const,
+         const PropertyMatcher& matcher) {
+  return MakePolymorphicMatcher(
+      internal::PropertyMatcher<Class, PropertyType,
+                                PropertyType (Class::*)() const>(
+          property_name, property, MatcherCast<const PropertyType&>(matcher)));
+}
+
+// The same as above but for reference-qualified member functions.
+template <typename Class, typename PropertyType, typename PropertyMatcher>
+inline PolymorphicMatcher<internal::PropertyMatcher<
+    Class, PropertyType, PropertyType (Class::*)() const &> >
+Property(PropertyType (Class::*property)() const &,
+         const PropertyMatcher& matcher) {
+  return MakePolymorphicMatcher(
+      internal::PropertyMatcher<Class, PropertyType,
+                                PropertyType (Class::*)() const&>(
+          property, MatcherCast<const PropertyType&>(matcher)));
+}
+
+// Three-argument form for reference-qualified member functions.
+template <typename Class, typename PropertyType, typename PropertyMatcher>
+inline PolymorphicMatcher<internal::PropertyMatcher<
+    Class, PropertyType, PropertyType (Class::*)() const &> >
+Property(const std::string& property_name,
+         PropertyType (Class::*property)() const &,
+         const PropertyMatcher& matcher) {
+  return MakePolymorphicMatcher(
+      internal::PropertyMatcher<Class, PropertyType,
+                                PropertyType (Class::*)() const&>(
+          property_name, property, MatcherCast<const PropertyType&>(matcher)));
+}
+
+// Creates a matcher that matches an object if and only if the result of
+// applying a callable to x matches 'matcher'. For example,
+//   ResultOf(f, StartsWith("hi"))
+// matches a Foo object x if and only if f(x) starts with "hi".
+// `callable` parameter can be a function, function pointer, or a functor. It is
+// required to keep no state affecting the results of the calls on it and make
+// no assumptions about how many calls will be made. Any state it keeps must be
+// protected from the concurrent access.
+template <typename Callable, typename InnerMatcher>
+internal::ResultOfMatcher<Callable, InnerMatcher> ResultOf(
+    Callable callable, InnerMatcher matcher) {
+  return internal::ResultOfMatcher<Callable, InnerMatcher>(
+      std::move(callable), std::move(matcher));
+}
+
+// String matchers.
+
+// Matches a string equal to str.
+inline PolymorphicMatcher<internal::StrEqualityMatcher<std::string> > StrEq(
+    const std::string& str) {
+  return MakePolymorphicMatcher(
+      internal::StrEqualityMatcher<std::string>(str, true, true));
+}
+
+// Matches a string not equal to str.
+inline PolymorphicMatcher<internal::StrEqualityMatcher<std::string> > StrNe(
+    const std::string& str) {
+  return MakePolymorphicMatcher(
+      internal::StrEqualityMatcher<std::string>(str, false, true));
+}
+
+// Matches a string equal to str, ignoring case.
+inline PolymorphicMatcher<internal::StrEqualityMatcher<std::string> > StrCaseEq(
+    const std::string& str) {
+  return MakePolymorphicMatcher(
+      internal::StrEqualityMatcher<std::string>(str, true, false));
+}
+
+// Matches a string not equal to str, ignoring case.
+inline PolymorphicMatcher<internal::StrEqualityMatcher<std::string> > StrCaseNe(
+    const std::string& str) {
+  return MakePolymorphicMatcher(
+      internal::StrEqualityMatcher<std::string>(str, false, false));
+}
+
+// Creates a matcher that matches any string, std::string, or C string
+// that contains the given substring.
+inline PolymorphicMatcher<internal::HasSubstrMatcher<std::string> > HasSubstr(
+    const std::string& substring) {
+  return MakePolymorphicMatcher(
+      internal::HasSubstrMatcher<std::string>(substring));
+}
+
+// Matches a string that starts with 'prefix' (case-sensitive).
+inline PolymorphicMatcher<internal::StartsWithMatcher<std::string> > StartsWith(
+    const std::string& prefix) {
+  return MakePolymorphicMatcher(
+      internal::StartsWithMatcher<std::string>(prefix));
+}
+
+// Matches a string that ends with 'suffix' (case-sensitive).
+inline PolymorphicMatcher<internal::EndsWithMatcher<std::string> > EndsWith(
+    const std::string& suffix) {
+  return MakePolymorphicMatcher(internal::EndsWithMatcher<std::string>(suffix));
+}
+
+#if GTEST_HAS_STD_WSTRING
+// Wide string matchers.
+
+// Matches a string equal to str.
+inline PolymorphicMatcher<internal::StrEqualityMatcher<std::wstring> > StrEq(
+    const std::wstring& str) {
+  return MakePolymorphicMatcher(
+      internal::StrEqualityMatcher<std::wstring>(str, true, true));
+}
+
+// Matches a string not equal to str.
+inline PolymorphicMatcher<internal::StrEqualityMatcher<std::wstring> > StrNe(
+    const std::wstring& str) {
+  return MakePolymorphicMatcher(
+      internal::StrEqualityMatcher<std::wstring>(str, false, true));
+}
+
+// Matches a string equal to str, ignoring case.
+inline PolymorphicMatcher<internal::StrEqualityMatcher<std::wstring> >
+StrCaseEq(const std::wstring& str) {
+  return MakePolymorphicMatcher(
+      internal::StrEqualityMatcher<std::wstring>(str, true, false));
+}
+
+// Matches a string not equal to str, ignoring case.
+inline PolymorphicMatcher<internal::StrEqualityMatcher<std::wstring> >
+StrCaseNe(const std::wstring& str) {
+  return MakePolymorphicMatcher(
+      internal::StrEqualityMatcher<std::wstring>(str, false, false));
+}
+
+// Creates a matcher that matches any ::wstring, std::wstring, or C wide string
+// that contains the given substring.
+inline PolymorphicMatcher<internal::HasSubstrMatcher<std::wstring> > HasSubstr(
+    const std::wstring& substring) {
+  return MakePolymorphicMatcher(
+      internal::HasSubstrMatcher<std::wstring>(substring));
+}
+
+// Matches a string that starts with 'prefix' (case-sensitive).
+inline PolymorphicMatcher<internal::StartsWithMatcher<std::wstring> >
+StartsWith(const std::wstring& prefix) {
+  return MakePolymorphicMatcher(
+      internal::StartsWithMatcher<std::wstring>(prefix));
+}
+
+// Matches a string that ends with 'suffix' (case-sensitive).
+inline PolymorphicMatcher<internal::EndsWithMatcher<std::wstring> > EndsWith(
+    const std::wstring& suffix) {
+  return MakePolymorphicMatcher(
+      internal::EndsWithMatcher<std::wstring>(suffix));
+}
+
+#endif  // GTEST_HAS_STD_WSTRING
+
+// Creates a polymorphic matcher that matches a 2-tuple where the
+// first field == the second field.
+inline internal::Eq2Matcher Eq() { return internal::Eq2Matcher(); }
+
+// Creates a polymorphic matcher that matches a 2-tuple where the
+// first field >= the second field.
+inline internal::Ge2Matcher Ge() { return internal::Ge2Matcher(); }
+
+// Creates a polymorphic matcher that matches a 2-tuple where the
+// first field > the second field.
+inline internal::Gt2Matcher Gt() { return internal::Gt2Matcher(); }
+
+// Creates a polymorphic matcher that matches a 2-tuple where the
+// first field <= the second field.
+inline internal::Le2Matcher Le() { return internal::Le2Matcher(); }
+
+// Creates a polymorphic matcher that matches a 2-tuple where the
+// first field < the second field.
+inline internal::Lt2Matcher Lt() { return internal::Lt2Matcher(); }
+
+// Creates a polymorphic matcher that matches a 2-tuple where the
+// first field != the second field.
+inline internal::Ne2Matcher Ne() { return internal::Ne2Matcher(); }
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// FloatEq(first field) matches the second field.
+inline internal::FloatingEq2Matcher<float> FloatEq() {
+  return internal::FloatingEq2Matcher<float>();
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// DoubleEq(first field) matches the second field.
+inline internal::FloatingEq2Matcher<double> DoubleEq() {
+  return internal::FloatingEq2Matcher<double>();
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// FloatEq(first field) matches the second field with NaN equality.
+inline internal::FloatingEq2Matcher<float> NanSensitiveFloatEq() {
+  return internal::FloatingEq2Matcher<float>(true);
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// DoubleEq(first field) matches the second field with NaN equality.
+inline internal::FloatingEq2Matcher<double> NanSensitiveDoubleEq() {
+  return internal::FloatingEq2Matcher<double>(true);
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// FloatNear(first field, max_abs_error) matches the second field.
+inline internal::FloatingEq2Matcher<float> FloatNear(float max_abs_error) {
+  return internal::FloatingEq2Matcher<float>(max_abs_error);
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// DoubleNear(first field, max_abs_error) matches the second field.
+inline internal::FloatingEq2Matcher<double> DoubleNear(double max_abs_error) {
+  return internal::FloatingEq2Matcher<double>(max_abs_error);
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// FloatNear(first field, max_abs_error) matches the second field with NaN
+// equality.
+inline internal::FloatingEq2Matcher<float> NanSensitiveFloatNear(
+    float max_abs_error) {
+  return internal::FloatingEq2Matcher<float>(max_abs_error, true);
+}
+
+// Creates a polymorphic matcher that matches a 2-tuple where
+// DoubleNear(first field, max_abs_error) matches the second field with NaN
+// equality.
+inline internal::FloatingEq2Matcher<double> NanSensitiveDoubleNear(
+    double max_abs_error) {
+  return internal::FloatingEq2Matcher<double>(max_abs_error, true);
+}
+
+// Creates a matcher that matches any value of type T that m doesn't
+// match.
+template <typename InnerMatcher>
+inline internal::NotMatcher<InnerMatcher> Not(InnerMatcher m) {
+  return internal::NotMatcher<InnerMatcher>(m);
+}
+
+// Returns a matcher that matches anything that satisfies the given
+// predicate.  The predicate can be any unary function or functor
+// whose return type can be implicitly converted to bool.
+template <typename Predicate>
+inline PolymorphicMatcher<internal::TrulyMatcher<Predicate> >
+Truly(Predicate pred) {
+  return MakePolymorphicMatcher(internal::TrulyMatcher<Predicate>(pred));
+}
+
+// Returns a matcher that matches the container size. The container must
+// support both size() and size_type which all STL-like containers provide.
+// Note that the parameter 'size' can be a value of type size_type as well as
+// matcher. For instance:
+//   EXPECT_THAT(container, SizeIs(2));     // Checks container has 2 elements.
+//   EXPECT_THAT(container, SizeIs(Le(2));  // Checks container has at most 2.
+template <typename SizeMatcher>
+inline internal::SizeIsMatcher<SizeMatcher>
+SizeIs(const SizeMatcher& size_matcher) {
+  return internal::SizeIsMatcher<SizeMatcher>(size_matcher);
+}
+
+// Returns a matcher that matches the distance between the container's begin()
+// iterator and its end() iterator, i.e. the size of the container. This matcher
+// can be used instead of SizeIs with containers such as std::forward_list which
+// do not implement size(). The container must provide const_iterator (with
+// valid iterator_traits), begin() and end().
+template <typename DistanceMatcher>
+inline internal::BeginEndDistanceIsMatcher<DistanceMatcher>
+BeginEndDistanceIs(const DistanceMatcher& distance_matcher) {
+  return internal::BeginEndDistanceIsMatcher<DistanceMatcher>(distance_matcher);
+}
+
+// Returns a matcher that matches an equal container.
+// This matcher behaves like Eq(), but in the event of mismatch lists the
+// values that are included in one container but not the other. (Duplicate
+// values and order differences are not explained.)
+template <typename Container>
+inline PolymorphicMatcher<internal::ContainerEqMatcher<
+    typename std::remove_const<Container>::type>>
+ContainerEq(const Container& rhs) {
+  // This following line is for working around a bug in MSVC 8.0,
+  // which causes Container to be a const type sometimes.
+  typedef typename std::remove_const<Container>::type RawContainer;
+  return MakePolymorphicMatcher(
+      internal::ContainerEqMatcher<RawContainer>(rhs));
+}
+
+// Returns a matcher that matches a container that, when sorted using
+// the given comparator, matches container_matcher.
+template <typename Comparator, typename ContainerMatcher>
+inline internal::WhenSortedByMatcher<Comparator, ContainerMatcher>
+WhenSortedBy(const Comparator& comparator,
+             const ContainerMatcher& container_matcher) {
+  return internal::WhenSortedByMatcher<Comparator, ContainerMatcher>(
+      comparator, container_matcher);
+}
+
+// Returns a matcher that matches a container that, when sorted using
+// the < operator, matches container_matcher.
+template <typename ContainerMatcher>
+inline internal::WhenSortedByMatcher<internal::LessComparator, ContainerMatcher>
+WhenSorted(const ContainerMatcher& container_matcher) {
+  return
+      internal::WhenSortedByMatcher<internal::LessComparator, ContainerMatcher>(
+          internal::LessComparator(), container_matcher);
+}
+
+// Matches an STL-style container or a native array that contains the
+// same number of elements as in rhs, where its i-th element and rhs's
+// i-th element (as a pair) satisfy the given pair matcher, for all i.
+// TupleMatcher must be able to be safely cast to Matcher<std::tuple<const
+// T1&, const T2&> >, where T1 and T2 are the types of elements in the
+// LHS container and the RHS container respectively.
+template <typename TupleMatcher, typename Container>
+inline internal::PointwiseMatcher<TupleMatcher,
+                                  typename std::remove_const<Container>::type>
+Pointwise(const TupleMatcher& tuple_matcher, const Container& rhs) {
+  // This following line is for working around a bug in MSVC 8.0,
+  // which causes Container to be a const type sometimes (e.g. when
+  // rhs is a const int[])..
+  typedef typename std::remove_const<Container>::type RawContainer;
+  return internal::PointwiseMatcher<TupleMatcher, RawContainer>(
+      tuple_matcher, rhs);
+}
+
+
+// Supports the Pointwise(m, {a, b, c}) syntax.
+template <typename TupleMatcher, typename T>
+inline internal::PointwiseMatcher<TupleMatcher, std::vector<T> > Pointwise(
+    const TupleMatcher& tuple_matcher, std::initializer_list<T> rhs) {
+  return Pointwise(tuple_matcher, std::vector<T>(rhs));
+}
+
+
+// UnorderedPointwise(pair_matcher, rhs) matches an STL-style
+// container or a native array that contains the same number of
+// elements as in rhs, where in some permutation of the container, its
+// i-th element and rhs's i-th element (as a pair) satisfy the given
+// pair matcher, for all i.  Tuple2Matcher must be able to be safely
+// cast to Matcher<std::tuple<const T1&, const T2&> >, where T1 and T2 are
+// the types of elements in the LHS container and the RHS container
+// respectively.
+//
+// This is like Pointwise(pair_matcher, rhs), except that the element
+// order doesn't matter.
+template <typename Tuple2Matcher, typename RhsContainer>
+inline internal::UnorderedElementsAreArrayMatcher<
+    typename internal::BoundSecondMatcher<
+        Tuple2Matcher,
+        typename internal::StlContainerView<
+            typename std::remove_const<RhsContainer>::type>::type::value_type>>
+UnorderedPointwise(const Tuple2Matcher& tuple2_matcher,
+                   const RhsContainer& rhs_container) {
+  // This following line is for working around a bug in MSVC 8.0,
+  // which causes RhsContainer to be a const type sometimes (e.g. when
+  // rhs_container is a const int[]).
+  typedef typename std::remove_const<RhsContainer>::type RawRhsContainer;
+
+  // RhsView allows the same code to handle RhsContainer being a
+  // STL-style container and it being a native C-style array.
+  typedef typename internal::StlContainerView<RawRhsContainer> RhsView;
+  typedef typename RhsView::type RhsStlContainer;
+  typedef typename RhsStlContainer::value_type Second;
+  const RhsStlContainer& rhs_stl_container =
+      RhsView::ConstReference(rhs_container);
+
+  // Create a matcher for each element in rhs_container.
+  ::std::vector<internal::BoundSecondMatcher<Tuple2Matcher, Second> > matchers;
+  for (typename RhsStlContainer::const_iterator it = rhs_stl_container.begin();
+       it != rhs_stl_container.end(); ++it) {
+    matchers.push_back(
+        internal::MatcherBindSecond(tuple2_matcher, *it));
+  }
+
+  // Delegate the work to UnorderedElementsAreArray().
+  return UnorderedElementsAreArray(matchers);
+}
+
+
+// Supports the UnorderedPointwise(m, {a, b, c}) syntax.
+template <typename Tuple2Matcher, typename T>
+inline internal::UnorderedElementsAreArrayMatcher<
+    typename internal::BoundSecondMatcher<Tuple2Matcher, T> >
+UnorderedPointwise(const Tuple2Matcher& tuple2_matcher,
+                   std::initializer_list<T> rhs) {
+  return UnorderedPointwise(tuple2_matcher, std::vector<T>(rhs));
+}
+
+
+// Matches an STL-style container or a native array that contains at
+// least one element matching the given value or matcher.
+//
+// Examples:
+//   ::std::set<int> page_ids;
+//   page_ids.insert(3);
+//   page_ids.insert(1);
+//   EXPECT_THAT(page_ids, Contains(1));
+//   EXPECT_THAT(page_ids, Contains(Gt(2)));
+//   EXPECT_THAT(page_ids, Not(Contains(4)));
+//
+//   ::std::map<int, size_t> page_lengths;
+//   page_lengths[1] = 100;
+//   EXPECT_THAT(page_lengths,
+//               Contains(::std::pair<const int, size_t>(1, 100)));
+//
+//   const char* user_ids[] = { "joe", "mike", "tom" };
+//   EXPECT_THAT(user_ids, Contains(Eq(::std::string("tom"))));
+template <typename M>
+inline internal::ContainsMatcher<M> Contains(M matcher) {
+  return internal::ContainsMatcher<M>(matcher);
+}
+
+// IsSupersetOf(iterator_first, iterator_last)
+// IsSupersetOf(pointer, count)
+// IsSupersetOf(array)
+// IsSupersetOf(container)
+// IsSupersetOf({e1, e2, ..., en})
+//
+// IsSupersetOf() verifies that a surjective partial mapping onto a collection
+// of matchers exists. In other words, a container matches
+// IsSupersetOf({e1, ..., en}) if and only if there is a permutation
+// {y1, ..., yn} of some of the container's elements where y1 matches e1,
+// ..., and yn matches en. Obviously, the size of the container must be >= n
+// in order to have a match. Examples:
+//
+// - {1, 2, 3} matches IsSupersetOf({Ge(3), Ne(0)}), as 3 matches Ge(3) and
+//   1 matches Ne(0).
+// - {1, 2} doesn't match IsSupersetOf({Eq(1), Lt(2)}), even though 1 matches
+//   both Eq(1) and Lt(2). The reason is that different matchers must be used
+//   for elements in different slots of the container.
+// - {1, 1, 2} matches IsSupersetOf({Eq(1), Lt(2)}), as (the first) 1 matches
+//   Eq(1) and (the second) 1 matches Lt(2).
+// - {1, 2, 3} matches IsSupersetOf(Gt(1), Gt(1)), as 2 matches (the first)
+//   Gt(1) and 3 matches (the second) Gt(1).
+//
+// The matchers can be specified as an array, a pointer and count, a container,
+// an initializer list, or an STL iterator range. In each of these cases, the
+// underlying matchers can be either values or matchers.
+
+template <typename Iter>
+inline internal::UnorderedElementsAreArrayMatcher<
+    typename ::std::iterator_traits<Iter>::value_type>
+IsSupersetOf(Iter first, Iter last) {
+  typedef typename ::std::iterator_traits<Iter>::value_type T;
+  return internal::UnorderedElementsAreArrayMatcher<T>(
+      internal::UnorderedMatcherRequire::Superset, first, last);
+}
+
+template <typename T>
+inline internal::UnorderedElementsAreArrayMatcher<T> IsSupersetOf(
+    const T* pointer, size_t count) {
+  return IsSupersetOf(pointer, pointer + count);
+}
+
+template <typename T, size_t N>
+inline internal::UnorderedElementsAreArrayMatcher<T> IsSupersetOf(
+    const T (&array)[N]) {
+  return IsSupersetOf(array, N);
+}
+
+template <typename Container>
+inline internal::UnorderedElementsAreArrayMatcher<
+    typename Container::value_type>
+IsSupersetOf(const Container& container) {
+  return IsSupersetOf(container.begin(), container.end());
+}
+
+template <typename T>
+inline internal::UnorderedElementsAreArrayMatcher<T> IsSupersetOf(
+    ::std::initializer_list<T> xs) {
+  return IsSupersetOf(xs.begin(), xs.end());
+}
+
+// IsSubsetOf(iterator_first, iterator_last)
+// IsSubsetOf(pointer, count)
+// IsSubsetOf(array)
+// IsSubsetOf(container)
+// IsSubsetOf({e1, e2, ..., en})
+//
+// IsSubsetOf() verifies that an injective mapping onto a collection of matchers
+// exists.  In other words, a container matches IsSubsetOf({e1, ..., en}) if and
+// only if there is a subset of matchers {m1, ..., mk} which would match the
+// container using UnorderedElementsAre.  Obviously, the size of the container
+// must be <= n in order to have a match. Examples:
+//
+// - {1} matches IsSubsetOf({Gt(0), Lt(0)}), as 1 matches Gt(0).
+// - {1, -1} matches IsSubsetOf({Lt(0), Gt(0)}), as 1 matches Gt(0) and -1
+//   matches Lt(0).
+// - {1, 2} doesn't matches IsSubsetOf({Gt(0), Lt(0)}), even though 1 and 2 both
+//   match Gt(0). The reason is that different matchers must be used for
+//   elements in different slots of the container.
+//
+// The matchers can be specified as an array, a pointer and count, a container,
+// an initializer list, or an STL iterator range. In each of these cases, the
+// underlying matchers can be either values or matchers.
+
+template <typename Iter>
+inline internal::UnorderedElementsAreArrayMatcher<
+    typename ::std::iterator_traits<Iter>::value_type>
+IsSubsetOf(Iter first, Iter last) {
+  typedef typename ::std::iterator_traits<Iter>::value_type T;
+  return internal::UnorderedElementsAreArrayMatcher<T>(
+      internal::UnorderedMatcherRequire::Subset, first, last);
+}
+
+template <typename T>
+inline internal::UnorderedElementsAreArrayMatcher<T> IsSubsetOf(
+    const T* pointer, size_t count) {
+  return IsSubsetOf(pointer, pointer + count);
+}
+
+template <typename T, size_t N>
+inline internal::UnorderedElementsAreArrayMatcher<T> IsSubsetOf(
+    const T (&array)[N]) {
+  return IsSubsetOf(array, N);
+}
+
+template <typename Container>
+inline internal::UnorderedElementsAreArrayMatcher<
+    typename Container::value_type>
+IsSubsetOf(const Container& container) {
+  return IsSubsetOf(container.begin(), container.end());
+}
+
+template <typename T>
+inline internal::UnorderedElementsAreArrayMatcher<T> IsSubsetOf(
+    ::std::initializer_list<T> xs) {
+  return IsSubsetOf(xs.begin(), xs.end());
+}
+
+// Matches an STL-style container or a native array that contains only
+// elements matching the given value or matcher.
+//
+// Each(m) is semantically equivalent to Not(Contains(Not(m))). Only
+// the messages are different.
+//
+// Examples:
+//   ::std::set<int> page_ids;
+//   // Each(m) matches an empty container, regardless of what m is.
+//   EXPECT_THAT(page_ids, Each(Eq(1)));
+//   EXPECT_THAT(page_ids, Each(Eq(77)));
+//
+//   page_ids.insert(3);
+//   EXPECT_THAT(page_ids, Each(Gt(0)));
+//   EXPECT_THAT(page_ids, Not(Each(Gt(4))));
+//   page_ids.insert(1);
+//   EXPECT_THAT(page_ids, Not(Each(Lt(2))));
+//
+//   ::std::map<int, size_t> page_lengths;
+//   page_lengths[1] = 100;
+//   page_lengths[2] = 200;
+//   page_lengths[3] = 300;
+//   EXPECT_THAT(page_lengths, Not(Each(Pair(1, 100))));
+//   EXPECT_THAT(page_lengths, Each(Key(Le(3))));
+//
+//   const char* user_ids[] = { "joe", "mike", "tom" };
+//   EXPECT_THAT(user_ids, Not(Each(Eq(::std::string("tom")))));
+template <typename M>
+inline internal::EachMatcher<M> Each(M matcher) {
+  return internal::EachMatcher<M>(matcher);
+}
+
+// Key(inner_matcher) matches an std::pair whose 'first' field matches
+// inner_matcher.  For example, Contains(Key(Ge(5))) can be used to match an
+// std::map that contains at least one element whose key is >= 5.
+template <typename M>
+inline internal::KeyMatcher<M> Key(M inner_matcher) {
+  return internal::KeyMatcher<M>(inner_matcher);
+}
+
+// Pair(first_matcher, second_matcher) matches a std::pair whose 'first' field
+// matches first_matcher and whose 'second' field matches second_matcher.  For
+// example, EXPECT_THAT(map_type, ElementsAre(Pair(Ge(5), "foo"))) can be used
+// to match a std::map<int, string> that contains exactly one element whose key
+// is >= 5 and whose value equals "foo".
+template <typename FirstMatcher, typename SecondMatcher>
+inline internal::PairMatcher<FirstMatcher, SecondMatcher>
+Pair(FirstMatcher first_matcher, SecondMatcher second_matcher) {
+  return internal::PairMatcher<FirstMatcher, SecondMatcher>(
+      first_matcher, second_matcher);
+}
+
+// Returns a predicate that is satisfied by anything that matches the
+// given matcher.
+template <typename M>
+inline internal::MatcherAsPredicate<M> Matches(M matcher) {
+  return internal::MatcherAsPredicate<M>(matcher);
+}
+
+// Returns true if and only if the value matches the matcher.
+template <typename T, typename M>
+inline bool Value(const T& value, M matcher) {
+  return testing::Matches(matcher)(value);
+}
+
+// Matches the value against the given matcher and explains the match
+// result to listener.
+template <typename T, typename M>
+inline bool ExplainMatchResult(
+    M matcher, const T& value, MatchResultListener* listener) {
+  return SafeMatcherCast<const T&>(matcher).MatchAndExplain(value, listener);
+}
+
+// Returns a string representation of the given matcher.  Useful for description
+// strings of matchers defined using MATCHER_P* macros that accept matchers as
+// their arguments.  For example:
+//
+// MATCHER_P(XAndYThat, matcher,
+//           "X that " + DescribeMatcher<int>(matcher, negation) +
+//               " and Y that " + DescribeMatcher<double>(matcher, negation)) {
+//   return ExplainMatchResult(matcher, arg.x(), result_listener) &&
+//          ExplainMatchResult(matcher, arg.y(), result_listener);
+// }
+template <typename T, typename M>
+std::string DescribeMatcher(const M& matcher, bool negation = false) {
+  ::std::stringstream ss;
+  Matcher<T> monomorphic_matcher = SafeMatcherCast<T>(matcher);
+  if (negation) {
+    monomorphic_matcher.DescribeNegationTo(&ss);
+  } else {
+    monomorphic_matcher.DescribeTo(&ss);
+  }
+  return ss.str();
+}
+
+template <typename... Args>
+internal::ElementsAreMatcher<
+    std::tuple<typename std::decay<const Args&>::type...>>
+ElementsAre(const Args&... matchers) {
+  return internal::ElementsAreMatcher<
+      std::tuple<typename std::decay<const Args&>::type...>>(
+      std::make_tuple(matchers...));
+}
+
+template <typename... Args>
+internal::UnorderedElementsAreMatcher<
+    std::tuple<typename std::decay<const Args&>::type...>>
+UnorderedElementsAre(const Args&... matchers) {
+  return internal::UnorderedElementsAreMatcher<
+      std::tuple<typename std::decay<const Args&>::type...>>(
+      std::make_tuple(matchers...));
+}
+
+// Define variadic matcher versions.
+template <typename... Args>
+internal::AllOfMatcher<typename std::decay<const Args&>::type...> AllOf(
+    const Args&... matchers) {
+  return internal::AllOfMatcher<typename std::decay<const Args&>::type...>(
+      matchers...);
+}
+
+template <typename... Args>
+internal::AnyOfMatcher<typename std::decay<const Args&>::type...> AnyOf(
+    const Args&... matchers) {
+  return internal::AnyOfMatcher<typename std::decay<const Args&>::type...>(
+      matchers...);
+}
+
+// AnyOfArray(array)
+// AnyOfArray(pointer, count)
+// AnyOfArray(container)
+// AnyOfArray({ e1, e2, ..., en })
+// AnyOfArray(iterator_first, iterator_last)
+//
+// AnyOfArray() verifies whether a given value matches any member of a
+// collection of matchers.
+//
+// AllOfArray(array)
+// AllOfArray(pointer, count)
+// AllOfArray(container)
+// AllOfArray({ e1, e2, ..., en })
+// AllOfArray(iterator_first, iterator_last)
+//
+// AllOfArray() verifies whether a given value matches all members of a
+// collection of matchers.
+//
+// The matchers can be specified as an array, a pointer and count, a container,
+// an initializer list, or an STL iterator range. In each of these cases, the
+// underlying matchers can be either values or matchers.
+
+template <typename Iter>
+inline internal::AnyOfArrayMatcher<
+    typename ::std::iterator_traits<Iter>::value_type>
+AnyOfArray(Iter first, Iter last) {
+  return internal::AnyOfArrayMatcher<
+      typename ::std::iterator_traits<Iter>::value_type>(first, last);
+}
+
+template <typename Iter>
+inline internal::AllOfArrayMatcher<
+    typename ::std::iterator_traits<Iter>::value_type>
+AllOfArray(Iter first, Iter last) {
+  return internal::AllOfArrayMatcher<
+      typename ::std::iterator_traits<Iter>::value_type>(first, last);
+}
+
+template <typename T>
+inline internal::AnyOfArrayMatcher<T> AnyOfArray(const T* ptr, size_t count) {
+  return AnyOfArray(ptr, ptr + count);
+}
+
+template <typename T>
+inline internal::AllOfArrayMatcher<T> AllOfArray(const T* ptr, size_t count) {
+  return AllOfArray(ptr, ptr + count);
+}
+
+template <typename T, size_t N>
+inline internal::AnyOfArrayMatcher<T> AnyOfArray(const T (&array)[N]) {
+  return AnyOfArray(array, N);
+}
+
+template <typename T, size_t N>
+inline internal::AllOfArrayMatcher<T> AllOfArray(const T (&array)[N]) {
+  return AllOfArray(array, N);
+}
+
+template <typename Container>
+inline internal::AnyOfArrayMatcher<typename Container::value_type> AnyOfArray(
+    const Container& container) {
+  return AnyOfArray(container.begin(), container.end());
+}
+
+template <typename Container>
+inline internal::AllOfArrayMatcher<typename Container::value_type> AllOfArray(
+    const Container& container) {
+  return AllOfArray(container.begin(), container.end());
+}
+
+template <typename T>
+inline internal::AnyOfArrayMatcher<T> AnyOfArray(
+    ::std::initializer_list<T> xs) {
+  return AnyOfArray(xs.begin(), xs.end());
+}
+
+template <typename T>
+inline internal::AllOfArrayMatcher<T> AllOfArray(
+    ::std::initializer_list<T> xs) {
+  return AllOfArray(xs.begin(), xs.end());
+}
+
+// Args<N1, N2, ..., Nk>(a_matcher) matches a tuple if the selected
+// fields of it matches a_matcher.  C++ doesn't support default
+// arguments for function templates, so we have to overload it.
+template <size_t... k, typename InnerMatcher>
+internal::ArgsMatcher<typename std::decay<InnerMatcher>::type, k...> Args(
+    InnerMatcher&& matcher) {
+  return internal::ArgsMatcher<typename std::decay<InnerMatcher>::type, k...>(
+      std::forward<InnerMatcher>(matcher));
+}
+
+// AllArgs(m) is a synonym of m.  This is useful in
+//
+//   EXPECT_CALL(foo, Bar(_, _)).With(AllArgs(Eq()));
+//
+// which is easier to read than
+//
+//   EXPECT_CALL(foo, Bar(_, _)).With(Eq());
+template <typename InnerMatcher>
+inline InnerMatcher AllArgs(const InnerMatcher& matcher) { return matcher; }
+
+// Returns a matcher that matches the value of an optional<> type variable.
+// The matcher implementation only uses '!arg' and requires that the optional<>
+// type has a 'value_type' member type and that '*arg' is of type 'value_type'
+// and is printable using 'PrintToString'. It is compatible with
+// std::optional/std::experimental::optional.
+// Note that to compare an optional type variable against nullopt you should
+// use Eq(nullopt) and not Optional(Eq(nullopt)). The latter implies that the
+// optional value contains an optional itself.
+template <typename ValueMatcher>
+inline internal::OptionalMatcher<ValueMatcher> Optional(
+    const ValueMatcher& value_matcher) {
+  return internal::OptionalMatcher<ValueMatcher>(value_matcher);
+}
+
+// Returns a matcher that matches the value of a absl::any type variable.
+template <typename T>
+PolymorphicMatcher<internal::any_cast_matcher::AnyCastMatcher<T> > AnyWith(
+    const Matcher<const T&>& matcher) {
+  return MakePolymorphicMatcher(
+      internal::any_cast_matcher::AnyCastMatcher<T>(matcher));
+}
+
+// Returns a matcher that matches the value of a variant<> type variable.
+// The matcher implementation uses ADL to find the holds_alternative and get
+// functions.
+// It is compatible with std::variant.
+template <typename T>
+PolymorphicMatcher<internal::variant_matcher::VariantMatcher<T> > VariantWith(
+    const Matcher<const T&>& matcher) {
+  return MakePolymorphicMatcher(
+      internal::variant_matcher::VariantMatcher<T>(matcher));
+}
+
+// These macros allow using matchers to check values in Google Test
+// tests.  ASSERT_THAT(value, matcher) and EXPECT_THAT(value, matcher)
+// succeed if and only if the value matches the matcher.  If the assertion
+// fails, the value and the description of the matcher will be printed.
+#define ASSERT_THAT(value, matcher) ASSERT_PRED_FORMAT1(\
+    ::testing::internal::MakePredicateFormatterFromMatcher(matcher), value)
+#define EXPECT_THAT(value, matcher) EXPECT_PRED_FORMAT1(\
+    ::testing::internal::MakePredicateFormatterFromMatcher(matcher), value)
+
+}  // namespace testing
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251 5046
+
+// Include any custom callback matchers added by the local installation.
+// We must include this header at the end to make sure it can use the
+// declarations from this file.
+#include "gmock/internal/custom/gmock-matchers.h"
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-more-actions.h b/build/_deps/googletest-src/googlemock/include/gmock/gmock-more-actions.h
new file mode 100644
index 0000000000000000000000000000000000000000..d42484aef2bca540b98b72b52ef0804bb89a2bd7
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-more-actions.h
@@ -0,0 +1,162 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements some actions that depend on gmock-generated-actions.h.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_
+
+#include <algorithm>
+#include <type_traits>
+
+#include "gmock/gmock-generated-actions.h"
+
+namespace testing {
+namespace internal {
+
+// An internal replacement for std::copy which mimics its behavior. This is
+// necessary because Visual Studio deprecates ::std::copy, issuing warning 4996.
+// However Visual Studio 2010 and later do not honor #pragmas which disable that
+// warning.
+template<typename InputIterator, typename OutputIterator>
+inline OutputIterator CopyElements(InputIterator first,
+                                   InputIterator last,
+                                   OutputIterator output) {
+  for (; first != last; ++first, ++output) {
+    *output = *first;
+  }
+  return output;
+}
+
+}  // namespace internal
+
+// Various overloads for Invoke().
+
+// The ACTION*() macros trigger warning C4100 (unreferenced formal
+// parameter) in MSVC with -W4.  Unfortunately they cannot be fixed in
+// the macro definition, as the warnings are generated when the macro
+// is expanded and macro expansion cannot contain #pragma.  Therefore
+// we suppress them here.
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
+#endif
+
+// Action ReturnArg<k>() returns the k-th argument of the mock function.
+ACTION_TEMPLATE(ReturnArg,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_0_VALUE_PARAMS()) {
+  return ::std::get<k>(args);
+}
+
+// Action SaveArg<k>(pointer) saves the k-th (0-based) argument of the
+// mock function to *pointer.
+ACTION_TEMPLATE(SaveArg,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_1_VALUE_PARAMS(pointer)) {
+  *pointer = ::std::get<k>(args);
+}
+
+// Action SaveArgPointee<k>(pointer) saves the value pointed to
+// by the k-th (0-based) argument of the mock function to *pointer.
+ACTION_TEMPLATE(SaveArgPointee,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_1_VALUE_PARAMS(pointer)) {
+  *pointer = *::std::get<k>(args);
+}
+
+// Action SetArgReferee<k>(value) assigns 'value' to the variable
+// referenced by the k-th (0-based) argument of the mock function.
+ACTION_TEMPLATE(SetArgReferee,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_1_VALUE_PARAMS(value)) {
+  typedef typename ::std::tuple_element<k, args_type>::type argk_type;
+  // Ensures that argument #k is a reference.  If you get a compiler
+  // error on the next line, you are using SetArgReferee<k>(value) in
+  // a mock function whose k-th (0-based) argument is not a reference.
+  GTEST_COMPILE_ASSERT_(std::is_reference<argk_type>::value,
+                        SetArgReferee_must_be_used_with_a_reference_argument);
+  ::std::get<k>(args) = value;
+}
+
+// Action SetArrayArgument<k>(first, last) copies the elements in
+// source range [first, last) to the array pointed to by the k-th
+// (0-based) argument, which can be either a pointer or an
+// iterator. The action does not take ownership of the elements in the
+// source range.
+ACTION_TEMPLATE(SetArrayArgument,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_2_VALUE_PARAMS(first, last)) {
+  // Visual Studio deprecates ::std::copy, so we use our own copy in that case.
+#ifdef _MSC_VER
+  internal::CopyElements(first, last, ::std::get<k>(args));
+#else
+  ::std::copy(first, last, ::std::get<k>(args));
+#endif
+}
+
+// Action DeleteArg<k>() deletes the k-th (0-based) argument of the mock
+// function.
+ACTION_TEMPLATE(DeleteArg,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_0_VALUE_PARAMS()) {
+  delete ::std::get<k>(args);
+}
+
+// This action returns the value pointed to by 'pointer'.
+ACTION_P(ReturnPointee, pointer) { return *pointer; }
+
+// Action Throw(exception) can be used in a mock function of any type
+// to throw the given exception.  Any copyable value can be thrown.
+#if GTEST_HAS_EXCEPTIONS
+
+// Suppresses the 'unreachable code' warning that VC generates in opt modes.
+# ifdef _MSC_VER
+#  pragma warning(push)          // Saves the current warning state.
+#  pragma warning(disable:4702)  // Temporarily disables warning 4702.
+# endif
+ACTION_P(Throw, exception) { throw exception; }
+# ifdef _MSC_VER
+#  pragma warning(pop)           // Restores the warning state.
+# endif
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+}  // namespace testing
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-more-matchers.h b/build/_deps/googletest-src/googlemock/include/gmock/gmock-more-matchers.h
new file mode 100644
index 0000000000000000000000000000000000000000..1c9a399a341e79ee0102c674a75a269bd2552ec2
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-more-matchers.h
@@ -0,0 +1,92 @@
+// Copyright 2013, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements some matchers that depend on gmock-generated-matchers.h.
+//
+// Note that tests are implemented in gmock-matchers_test.cc rather than
+// gmock-more-matchers-test.cc.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_MORE_MATCHERS_H_
+#define GMOCK_INCLUDE_GMOCK_MORE_MATCHERS_H_
+
+#include "gmock/gmock-generated-matchers.h"
+
+namespace testing {
+
+// Silence C4100 (unreferenced formal
+// parameter) for MSVC
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
+#if (_MSC_VER == 1900)
+// and silence C4800 (C4800: 'int *const ': forcing value
+// to bool 'true' or 'false') for MSVC 14
+# pragma warning(disable:4800)
+  #endif
+#endif
+
+// Defines a matcher that matches an empty container. The container must
+// support both size() and empty(), which all STL-like containers provide.
+MATCHER(IsEmpty, negation ? "isn't empty" : "is empty") {
+  if (arg.empty()) {
+    return true;
+  }
+  *result_listener << "whose size is " << arg.size();
+  return false;
+}
+
+// Define a matcher that matches a value that evaluates in boolean
+// context to true.  Useful for types that define "explicit operator
+// bool" operators and so can't be compared for equality with true
+// and false.
+MATCHER(IsTrue, negation ? "is false" : "is true") {
+  return static_cast<bool>(arg);
+}
+
+// Define a matcher that matches a value that evaluates in boolean
+// context to false.  Useful for types that define "explicit operator
+// bool" operators and so can't be compared for equality with true
+// and false.
+MATCHER(IsFalse, negation ? "is true" : "is false") {
+  return !static_cast<bool>(arg);
+}
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+
+}  // namespace testing
+
+#endif  // GMOCK_INCLUDE_GMOCK_MORE_MATCHERS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-nice-strict.h b/build/_deps/googletest-src/googlemock/include/gmock/gmock-nice-strict.h
new file mode 100644
index 0000000000000000000000000000000000000000..5495a9805b5fade1998f5d3b7d43a7ed3a99b9dd
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-nice-strict.h
@@ -0,0 +1,215 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Implements class templates NiceMock, NaggyMock, and StrictMock.
+//
+// Given a mock class MockFoo that is created using Google Mock,
+// NiceMock<MockFoo> is a subclass of MockFoo that allows
+// uninteresting calls (i.e. calls to mock methods that have no
+// EXPECT_CALL specs), NaggyMock<MockFoo> is a subclass of MockFoo
+// that prints a warning when an uninteresting call occurs, and
+// StrictMock<MockFoo> is a subclass of MockFoo that treats all
+// uninteresting calls as errors.
+//
+// Currently a mock is naggy by default, so MockFoo and
+// NaggyMock<MockFoo> behave like the same.  However, we will soon
+// switch the default behavior of mocks to be nice, as that in general
+// leads to more maintainable tests.  When that happens, MockFoo will
+// stop behaving like NaggyMock<MockFoo> and start behaving like
+// NiceMock<MockFoo>.
+//
+// NiceMock, NaggyMock, and StrictMock "inherit" the constructors of
+// their respective base class.  Therefore you can write
+// NiceMock<MockFoo>(5, "a") to construct a nice mock where MockFoo
+// has a constructor that accepts (int, const char*), for example.
+//
+// A known limitation is that NiceMock<MockFoo>, NaggyMock<MockFoo>,
+// and StrictMock<MockFoo> only works for mock methods defined using
+// the MOCK_METHOD* family of macros DIRECTLY in the MockFoo class.
+// If a mock method is defined in a base class of MockFoo, the "nice"
+// or "strict" modifier may not affect it, depending on the compiler.
+// In particular, nesting NiceMock, NaggyMock, and StrictMock is NOT
+// supported.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_NICE_STRICT_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_NICE_STRICT_H_
+
+#include "gmock/gmock-spec-builders.h"
+#include "gmock/internal/gmock-port.h"
+
+namespace testing {
+
+template <class MockClass>
+class NiceMock : public MockClass {
+ public:
+  NiceMock() : MockClass() {
+    ::testing::Mock::AllowUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  // Ideally, we would inherit base class's constructors through a using
+  // declaration, which would preserve their visibility. However, many existing
+  // tests rely on the fact that current implementation reexports protected
+  // constructors as public. These tests would need to be cleaned up first.
+
+  // Single argument constructor is special-cased so that it can be
+  // made explicit.
+  template <typename A>
+  explicit NiceMock(A&& arg) : MockClass(std::forward<A>(arg)) {
+    ::testing::Mock::AllowUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  template <typename A1, typename A2, typename... An>
+  NiceMock(A1&& arg1, A2&& arg2, An&&... args)
+      : MockClass(std::forward<A1>(arg1), std::forward<A2>(arg2),
+                  std::forward<An>(args)...) {
+    ::testing::Mock::AllowUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  ~NiceMock() {  // NOLINT
+    ::testing::Mock::UnregisterCallReaction(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(NiceMock);
+};
+
+template <class MockClass>
+class NaggyMock : public MockClass {
+ public:
+  NaggyMock() : MockClass() {
+    ::testing::Mock::WarnUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  // Ideally, we would inherit base class's constructors through a using
+  // declaration, which would preserve their visibility. However, many existing
+  // tests rely on the fact that current implementation reexports protected
+  // constructors as public. These tests would need to be cleaned up first.
+
+  // Single argument constructor is special-cased so that it can be
+  // made explicit.
+  template <typename A>
+  explicit NaggyMock(A&& arg) : MockClass(std::forward<A>(arg)) {
+    ::testing::Mock::WarnUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  template <typename A1, typename A2, typename... An>
+  NaggyMock(A1&& arg1, A2&& arg2, An&&... args)
+      : MockClass(std::forward<A1>(arg1), std::forward<A2>(arg2),
+                  std::forward<An>(args)...) {
+    ::testing::Mock::WarnUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  ~NaggyMock() {  // NOLINT
+    ::testing::Mock::UnregisterCallReaction(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(NaggyMock);
+};
+
+template <class MockClass>
+class StrictMock : public MockClass {
+ public:
+  StrictMock() : MockClass() {
+    ::testing::Mock::FailUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  // Ideally, we would inherit base class's constructors through a using
+  // declaration, which would preserve their visibility. However, many existing
+  // tests rely on the fact that current implementation reexports protected
+  // constructors as public. These tests would need to be cleaned up first.
+
+  // Single argument constructor is special-cased so that it can be
+  // made explicit.
+  template <typename A>
+  explicit StrictMock(A&& arg) : MockClass(std::forward<A>(arg)) {
+    ::testing::Mock::FailUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  template <typename A1, typename A2, typename... An>
+  StrictMock(A1&& arg1, A2&& arg2, An&&... args)
+      : MockClass(std::forward<A1>(arg1), std::forward<A2>(arg2),
+                  std::forward<An>(args)...) {
+    ::testing::Mock::FailUninterestingCalls(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+  ~StrictMock() {  // NOLINT
+    ::testing::Mock::UnregisterCallReaction(
+        internal::ImplicitCast_<MockClass*>(this));
+  }
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(StrictMock);
+};
+
+// The following specializations catch some (relatively more common)
+// user errors of nesting nice and strict mocks.  They do NOT catch
+// all possible errors.
+
+// These specializations are declared but not defined, as NiceMock,
+// NaggyMock, and StrictMock cannot be nested.
+
+template <typename MockClass>
+class NiceMock<NiceMock<MockClass> >;
+template <typename MockClass>
+class NiceMock<NaggyMock<MockClass> >;
+template <typename MockClass>
+class NiceMock<StrictMock<MockClass> >;
+
+template <typename MockClass>
+class NaggyMock<NiceMock<MockClass> >;
+template <typename MockClass>
+class NaggyMock<NaggyMock<MockClass> >;
+template <typename MockClass>
+class NaggyMock<StrictMock<MockClass> >;
+
+template <typename MockClass>
+class StrictMock<NiceMock<MockClass> >;
+template <typename MockClass>
+class StrictMock<NaggyMock<MockClass> >;
+template <typename MockClass>
+class StrictMock<StrictMock<MockClass> >;
+
+}  // namespace testing
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_NICE_STRICT_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock-spec-builders.h b/build/_deps/googletest-src/googlemock/include/gmock/gmock-spec-builders.h
new file mode 100644
index 0000000000000000000000000000000000000000..80c13b554921ae5e4b8ea220efe5765300751123
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock-spec-builders.h
@@ -0,0 +1,1985 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements the ON_CALL() and EXPECT_CALL() macros.
+//
+// A user can use the ON_CALL() macro to specify the default action of
+// a mock method.  The syntax is:
+//
+//   ON_CALL(mock_object, Method(argument-matchers))
+//       .With(multi-argument-matcher)
+//       .WillByDefault(action);
+//
+//  where the .With() clause is optional.
+//
+// A user can use the EXPECT_CALL() macro to specify an expectation on
+// a mock method.  The syntax is:
+//
+//   EXPECT_CALL(mock_object, Method(argument-matchers))
+//       .With(multi-argument-matchers)
+//       .Times(cardinality)
+//       .InSequence(sequences)
+//       .After(expectations)
+//       .WillOnce(action)
+//       .WillRepeatedly(action)
+//       .RetiresOnSaturation();
+//
+// where all clauses are optional, and .InSequence()/.After()/
+// .WillOnce() can appear any number of times.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_
+
+#include <functional>
+#include <map>
+#include <memory>
+#include <set>
+#include <sstream>
+#include <string>
+#include <type_traits>
+#include <utility>
+#include <vector>
+#include "gmock/gmock-actions.h"
+#include "gmock/gmock-cardinalities.h"
+#include "gmock/gmock-matchers.h"
+#include "gmock/internal/gmock-internal-utils.h"
+#include "gmock/internal/gmock-port.h"
+#include "gtest/gtest.h"
+
+#if GTEST_HAS_EXCEPTIONS
+# include <stdexcept>  // NOLINT
+#endif
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
+namespace testing {
+
+// An abstract handle of an expectation.
+class Expectation;
+
+// A set of expectation handles.
+class ExpectationSet;
+
+// Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION
+// and MUST NOT BE USED IN USER CODE!!!
+namespace internal {
+
+// Implements a mock function.
+template <typename F> class FunctionMocker;
+
+// Base class for expectations.
+class ExpectationBase;
+
+// Implements an expectation.
+template <typename F> class TypedExpectation;
+
+// Helper class for testing the Expectation class template.
+class ExpectationTester;
+
+// Protects the mock object registry (in class Mock), all function
+// mockers, and all expectations.
+//
+// The reason we don't use more fine-grained protection is: when a
+// mock function Foo() is called, it needs to consult its expectations
+// to see which one should be picked.  If another thread is allowed to
+// call a mock function (either Foo() or a different one) at the same
+// time, it could affect the "retired" attributes of Foo()'s
+// expectations when InSequence() is used, and thus affect which
+// expectation gets picked.  Therefore, we sequence all mock function
+// calls to ensure the integrity of the mock objects' states.
+GTEST_API_ GTEST_DECLARE_STATIC_MUTEX_(g_gmock_mutex);
+
+// Untyped base class for ActionResultHolder<R>.
+class UntypedActionResultHolderBase;
+
+// Abstract base class of FunctionMocker.  This is the
+// type-agnostic part of the function mocker interface.  Its pure
+// virtual methods are implemented by FunctionMocker.
+class GTEST_API_ UntypedFunctionMockerBase {
+ public:
+  UntypedFunctionMockerBase();
+  virtual ~UntypedFunctionMockerBase();
+
+  // Verifies that all expectations on this mock function have been
+  // satisfied.  Reports one or more Google Test non-fatal failures
+  // and returns false if not.
+  bool VerifyAndClearExpectationsLocked()
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex);
+
+  // Clears the ON_CALL()s set on this mock function.
+  virtual void ClearDefaultActionsLocked()
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) = 0;
+
+  // In all of the following Untyped* functions, it's the caller's
+  // responsibility to guarantee the correctness of the arguments'
+  // types.
+
+  // Performs the default action with the given arguments and returns
+  // the action's result.  The call description string will be used in
+  // the error message to describe the call in the case the default
+  // action fails.
+  // L = *
+  virtual UntypedActionResultHolderBase* UntypedPerformDefaultAction(
+      void* untyped_args, const std::string& call_description) const = 0;
+
+  // Performs the given action with the given arguments and returns
+  // the action's result.
+  // L = *
+  virtual UntypedActionResultHolderBase* UntypedPerformAction(
+      const void* untyped_action, void* untyped_args) const = 0;
+
+  // Writes a message that the call is uninteresting (i.e. neither
+  // explicitly expected nor explicitly unexpected) to the given
+  // ostream.
+  virtual void UntypedDescribeUninterestingCall(
+      const void* untyped_args,
+      ::std::ostream* os) const
+          GTEST_LOCK_EXCLUDED_(g_gmock_mutex) = 0;
+
+  // Returns the expectation that matches the given function arguments
+  // (or NULL is there's no match); when a match is found,
+  // untyped_action is set to point to the action that should be
+  // performed (or NULL if the action is "do default"), and
+  // is_excessive is modified to indicate whether the call exceeds the
+  // expected number.
+  virtual const ExpectationBase* UntypedFindMatchingExpectation(
+      const void* untyped_args,
+      const void** untyped_action, bool* is_excessive,
+      ::std::ostream* what, ::std::ostream* why)
+          GTEST_LOCK_EXCLUDED_(g_gmock_mutex) = 0;
+
+  // Prints the given function arguments to the ostream.
+  virtual void UntypedPrintArgs(const void* untyped_args,
+                                ::std::ostream* os) const = 0;
+
+  // Sets the mock object this mock method belongs to, and registers
+  // this information in the global mock registry.  Will be called
+  // whenever an EXPECT_CALL() or ON_CALL() is executed on this mock
+  // method.
+  void RegisterOwner(const void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(g_gmock_mutex);
+
+  // Sets the mock object this mock method belongs to, and sets the
+  // name of the mock function.  Will be called upon each invocation
+  // of this mock function.
+  void SetOwnerAndName(const void* mock_obj, const char* name)
+      GTEST_LOCK_EXCLUDED_(g_gmock_mutex);
+
+  // Returns the mock object this mock method belongs to.  Must be
+  // called after RegisterOwner() or SetOwnerAndName() has been
+  // called.
+  const void* MockObject() const
+      GTEST_LOCK_EXCLUDED_(g_gmock_mutex);
+
+  // Returns the name of this mock method.  Must be called after
+  // SetOwnerAndName() has been called.
+  const char* Name() const
+      GTEST_LOCK_EXCLUDED_(g_gmock_mutex);
+
+  // Returns the result of invoking this mock function with the given
+  // arguments.  This function can be safely called from multiple
+  // threads concurrently.  The caller is responsible for deleting the
+  // result.
+  UntypedActionResultHolderBase* UntypedInvokeWith(void* untyped_args)
+      GTEST_LOCK_EXCLUDED_(g_gmock_mutex);
+
+ protected:
+  typedef std::vector<const void*> UntypedOnCallSpecs;
+
+  using UntypedExpectations = std::vector<std::shared_ptr<ExpectationBase>>;
+
+  // Returns an Expectation object that references and co-owns exp,
+  // which must be an expectation on this mock function.
+  Expectation GetHandleOf(ExpectationBase* exp);
+
+  // Address of the mock object this mock method belongs to.  Only
+  // valid after this mock method has been called or
+  // ON_CALL/EXPECT_CALL has been invoked on it.
+  const void* mock_obj_;  // Protected by g_gmock_mutex.
+
+  // Name of the function being mocked.  Only valid after this mock
+  // method has been called.
+  const char* name_;  // Protected by g_gmock_mutex.
+
+  // All default action specs for this function mocker.
+  UntypedOnCallSpecs untyped_on_call_specs_;
+
+  // All expectations for this function mocker.
+  //
+  // It's undefined behavior to interleave expectations (EXPECT_CALLs
+  // or ON_CALLs) and mock function calls.  Also, the order of
+  // expectations is important.  Therefore it's a logic race condition
+  // to read/write untyped_expectations_ concurrently.  In order for
+  // tools like tsan to catch concurrent read/write accesses to
+  // untyped_expectations, we deliberately leave accesses to it
+  // unprotected.
+  UntypedExpectations untyped_expectations_;
+};  // class UntypedFunctionMockerBase
+
+// Untyped base class for OnCallSpec<F>.
+class UntypedOnCallSpecBase {
+ public:
+  // The arguments are the location of the ON_CALL() statement.
+  UntypedOnCallSpecBase(const char* a_file, int a_line)
+      : file_(a_file), line_(a_line), last_clause_(kNone) {}
+
+  // Where in the source file was the default action spec defined?
+  const char* file() const { return file_; }
+  int line() const { return line_; }
+
+ protected:
+  // Gives each clause in the ON_CALL() statement a name.
+  enum Clause {
+    // Do not change the order of the enum members!  The run-time
+    // syntax checking relies on it.
+    kNone,
+    kWith,
+    kWillByDefault
+  };
+
+  // Asserts that the ON_CALL() statement has a certain property.
+  void AssertSpecProperty(bool property,
+                          const std::string& failure_message) const {
+    Assert(property, file_, line_, failure_message);
+  }
+
+  // Expects that the ON_CALL() statement has a certain property.
+  void ExpectSpecProperty(bool property,
+                          const std::string& failure_message) const {
+    Expect(property, file_, line_, failure_message);
+  }
+
+  const char* file_;
+  int line_;
+
+  // The last clause in the ON_CALL() statement as seen so far.
+  // Initially kNone and changes as the statement is parsed.
+  Clause last_clause_;
+};  // class UntypedOnCallSpecBase
+
+// This template class implements an ON_CALL spec.
+template <typename F>
+class OnCallSpec : public UntypedOnCallSpecBase {
+ public:
+  typedef typename Function<F>::ArgumentTuple ArgumentTuple;
+  typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple;
+
+  // Constructs an OnCallSpec object from the information inside
+  // the parenthesis of an ON_CALL() statement.
+  OnCallSpec(const char* a_file, int a_line,
+             const ArgumentMatcherTuple& matchers)
+      : UntypedOnCallSpecBase(a_file, a_line),
+        matchers_(matchers),
+        // By default, extra_matcher_ should match anything.  However,
+        // we cannot initialize it with _ as that causes ambiguity between
+        // Matcher's copy and move constructor for some argument types.
+        extra_matcher_(A<const ArgumentTuple&>()) {}
+
+  // Implements the .With() clause.
+  OnCallSpec& With(const Matcher<const ArgumentTuple&>& m) {
+    // Makes sure this is called at most once.
+    ExpectSpecProperty(last_clause_ < kWith,
+                       ".With() cannot appear "
+                       "more than once in an ON_CALL().");
+    last_clause_ = kWith;
+
+    extra_matcher_ = m;
+    return *this;
+  }
+
+  // Implements the .WillByDefault() clause.
+  OnCallSpec& WillByDefault(const Action<F>& action) {
+    ExpectSpecProperty(last_clause_ < kWillByDefault,
+                       ".WillByDefault() must appear "
+                       "exactly once in an ON_CALL().");
+    last_clause_ = kWillByDefault;
+
+    ExpectSpecProperty(!action.IsDoDefault(),
+                       "DoDefault() cannot be used in ON_CALL().");
+    action_ = action;
+    return *this;
+  }
+
+  // Returns true if and only if the given arguments match the matchers.
+  bool Matches(const ArgumentTuple& args) const {
+    return TupleMatches(matchers_, args) && extra_matcher_.Matches(args);
+  }
+
+  // Returns the action specified by the user.
+  const Action<F>& GetAction() const {
+    AssertSpecProperty(last_clause_ == kWillByDefault,
+                       ".WillByDefault() must appear exactly "
+                       "once in an ON_CALL().");
+    return action_;
+  }
+
+ private:
+  // The information in statement
+  //
+  //   ON_CALL(mock_object, Method(matchers))
+  //       .With(multi-argument-matcher)
+  //       .WillByDefault(action);
+  //
+  // is recorded in the data members like this:
+  //
+  //   source file that contains the statement => file_
+  //   line number of the statement            => line_
+  //   matchers                                => matchers_
+  //   multi-argument-matcher                  => extra_matcher_
+  //   action                                  => action_
+  ArgumentMatcherTuple matchers_;
+  Matcher<const ArgumentTuple&> extra_matcher_;
+  Action<F> action_;
+};  // class OnCallSpec
+
+// Possible reactions on uninteresting calls.
+enum CallReaction {
+  kAllow,
+  kWarn,
+  kFail,
+};
+
+}  // namespace internal
+
+// Utilities for manipulating mock objects.
+class GTEST_API_ Mock {
+ public:
+  // The following public methods can be called concurrently.
+
+  // Tells Google Mock to ignore mock_obj when checking for leaked
+  // mock objects.
+  static void AllowLeak(const void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+
+  // Verifies and clears all expectations on the given mock object.
+  // If the expectations aren't satisfied, generates one or more
+  // Google Test non-fatal failures and returns false.
+  static bool VerifyAndClearExpectations(void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+
+  // Verifies all expectations on the given mock object and clears its
+  // default actions and expectations.  Returns true if and only if the
+  // verification was successful.
+  static bool VerifyAndClear(void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+
+  // Returns whether the mock was created as a naggy mock (default)
+  static bool IsNaggy(void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+  // Returns whether the mock was created as a nice mock
+  static bool IsNice(void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+  // Returns whether the mock was created as a strict mock
+  static bool IsStrict(void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+
+ private:
+  friend class internal::UntypedFunctionMockerBase;
+
+  // Needed for a function mocker to register itself (so that we know
+  // how to clear a mock object).
+  template <typename F>
+  friend class internal::FunctionMocker;
+
+  template <typename M>
+  friend class NiceMock;
+
+  template <typename M>
+  friend class NaggyMock;
+
+  template <typename M>
+  friend class StrictMock;
+
+  // Tells Google Mock to allow uninteresting calls on the given mock
+  // object.
+  static void AllowUninterestingCalls(const void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+
+  // Tells Google Mock to warn the user about uninteresting calls on
+  // the given mock object.
+  static void WarnUninterestingCalls(const void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+
+  // Tells Google Mock to fail uninteresting calls on the given mock
+  // object.
+  static void FailUninterestingCalls(const void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+
+  // Tells Google Mock the given mock object is being destroyed and
+  // its entry in the call-reaction table should be removed.
+  static void UnregisterCallReaction(const void* mock_obj)
+      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+
+  // Returns the reaction Google Mock will have on uninteresting calls
+  // made on the given mock object.
+  static internal::CallReaction GetReactionOnUninterestingCalls(
+      const void* mock_obj)
+          GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+
+  // Verifies that all expectations on the given mock object have been
+  // satisfied.  Reports one or more Google Test non-fatal failures
+  // and returns false if not.
+  static bool VerifyAndClearExpectationsLocked(void* mock_obj)
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex);
+
+  // Clears all ON_CALL()s set on the given mock object.
+  static void ClearDefaultActionsLocked(void* mock_obj)
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex);
+
+  // Registers a mock object and a mock method it owns.
+  static void Register(
+      const void* mock_obj,
+      internal::UntypedFunctionMockerBase* mocker)
+          GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+
+  // Tells Google Mock where in the source code mock_obj is used in an
+  // ON_CALL or EXPECT_CALL.  In case mock_obj is leaked, this
+  // information helps the user identify which object it is.
+  static void RegisterUseByOnCallOrExpectCall(
+      const void* mock_obj, const char* file, int line)
+          GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);
+
+  // Unregisters a mock method; removes the owning mock object from
+  // the registry when the last mock method associated with it has
+  // been unregistered.  This is called only in the destructor of
+  // FunctionMocker.
+  static void UnregisterLocked(internal::UntypedFunctionMockerBase* mocker)
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex);
+};  // class Mock
+
+// An abstract handle of an expectation.  Useful in the .After()
+// clause of EXPECT_CALL() for setting the (partial) order of
+// expectations.  The syntax:
+//
+//   Expectation e1 = EXPECT_CALL(...)...;
+//   EXPECT_CALL(...).After(e1)...;
+//
+// sets two expectations where the latter can only be matched after
+// the former has been satisfied.
+//
+// Notes:
+//   - This class is copyable and has value semantics.
+//   - Constness is shallow: a const Expectation object itself cannot
+//     be modified, but the mutable methods of the ExpectationBase
+//     object it references can be called via expectation_base().
+
+class GTEST_API_ Expectation {
+ public:
+  // Constructs a null object that doesn't reference any expectation.
+  Expectation();
+
+  ~Expectation();
+
+  // This single-argument ctor must not be explicit, in order to support the
+  //   Expectation e = EXPECT_CALL(...);
+  // syntax.
+  //
+  // A TypedExpectation object stores its pre-requisites as
+  // Expectation objects, and needs to call the non-const Retire()
+  // method on the ExpectationBase objects they reference.  Therefore
+  // Expectation must receive a *non-const* reference to the
+  // ExpectationBase object.
+  Expectation(internal::ExpectationBase& exp);  // NOLINT
+
+  // The compiler-generated copy ctor and operator= work exactly as
+  // intended, so we don't need to define our own.
+
+  // Returns true if and only if rhs references the same expectation as this
+  // object does.
+  bool operator==(const Expectation& rhs) const {
+    return expectation_base_ == rhs.expectation_base_;
+  }
+
+  bool operator!=(const Expectation& rhs) const { return !(*this == rhs); }
+
+ private:
+  friend class ExpectationSet;
+  friend class Sequence;
+  friend class ::testing::internal::ExpectationBase;
+  friend class ::testing::internal::UntypedFunctionMockerBase;
+
+  template <typename F>
+  friend class ::testing::internal::FunctionMocker;
+
+  template <typename F>
+  friend class ::testing::internal::TypedExpectation;
+
+  // This comparator is needed for putting Expectation objects into a set.
+  class Less {
+   public:
+    bool operator()(const Expectation& lhs, const Expectation& rhs) const {
+      return lhs.expectation_base_.get() < rhs.expectation_base_.get();
+    }
+  };
+
+  typedef ::std::set<Expectation, Less> Set;
+
+  Expectation(
+      const std::shared_ptr<internal::ExpectationBase>& expectation_base);
+
+  // Returns the expectation this object references.
+  const std::shared_ptr<internal::ExpectationBase>& expectation_base() const {
+    return expectation_base_;
+  }
+
+  // A shared_ptr that co-owns the expectation this handle references.
+  std::shared_ptr<internal::ExpectationBase> expectation_base_;
+};
+
+// A set of expectation handles.  Useful in the .After() clause of
+// EXPECT_CALL() for setting the (partial) order of expectations.  The
+// syntax:
+//
+//   ExpectationSet es;
+//   es += EXPECT_CALL(...)...;
+//   es += EXPECT_CALL(...)...;
+//   EXPECT_CALL(...).After(es)...;
+//
+// sets three expectations where the last one can only be matched
+// after the first two have both been satisfied.
+//
+// This class is copyable and has value semantics.
+class ExpectationSet {
+ public:
+  // A bidirectional iterator that can read a const element in the set.
+  typedef Expectation::Set::const_iterator const_iterator;
+
+  // An object stored in the set.  This is an alias of Expectation.
+  typedef Expectation::Set::value_type value_type;
+
+  // Constructs an empty set.
+  ExpectationSet() {}
+
+  // This single-argument ctor must not be explicit, in order to support the
+  //   ExpectationSet es = EXPECT_CALL(...);
+  // syntax.
+  ExpectationSet(internal::ExpectationBase& exp) {  // NOLINT
+    *this += Expectation(exp);
+  }
+
+  // This single-argument ctor implements implicit conversion from
+  // Expectation and thus must not be explicit.  This allows either an
+  // Expectation or an ExpectationSet to be used in .After().
+  ExpectationSet(const Expectation& e) {  // NOLINT
+    *this += e;
+  }
+
+  // The compiler-generator ctor and operator= works exactly as
+  // intended, so we don't need to define our own.
+
+  // Returns true if and only if rhs contains the same set of Expectation
+  // objects as this does.
+  bool operator==(const ExpectationSet& rhs) const {
+    return expectations_ == rhs.expectations_;
+  }
+
+  bool operator!=(const ExpectationSet& rhs) const { return !(*this == rhs); }
+
+  // Implements the syntax
+  //   expectation_set += EXPECT_CALL(...);
+  ExpectationSet& operator+=(const Expectation& e) {
+    expectations_.insert(e);
+    return *this;
+  }
+
+  int size() const { return static_cast<int>(expectations_.size()); }
+
+  const_iterator begin() const { return expectations_.begin(); }
+  const_iterator end() const { return expectations_.end(); }
+
+ private:
+  Expectation::Set expectations_;
+};
+
+
+// Sequence objects are used by a user to specify the relative order
+// in which the expectations should match.  They are copyable (we rely
+// on the compiler-defined copy constructor and assignment operator).
+class GTEST_API_ Sequence {
+ public:
+  // Constructs an empty sequence.
+  Sequence() : last_expectation_(new Expectation) {}
+
+  // Adds an expectation to this sequence.  The caller must ensure
+  // that no other thread is accessing this Sequence object.
+  void AddExpectation(const Expectation& expectation) const;
+
+ private:
+  // The last expectation in this sequence.
+  std::shared_ptr<Expectation> last_expectation_;
+};  // class Sequence
+
+// An object of this type causes all EXPECT_CALL() statements
+// encountered in its scope to be put in an anonymous sequence.  The
+// work is done in the constructor and destructor.  You should only
+// create an InSequence object on the stack.
+//
+// The sole purpose for this class is to support easy definition of
+// sequential expectations, e.g.
+//
+//   {
+//     InSequence dummy;  // The name of the object doesn't matter.
+//
+//     // The following expectations must match in the order they appear.
+//     EXPECT_CALL(a, Bar())...;
+//     EXPECT_CALL(a, Baz())...;
+//     ...
+//     EXPECT_CALL(b, Xyz())...;
+//   }
+//
+// You can create InSequence objects in multiple threads, as long as
+// they are used to affect different mock objects.  The idea is that
+// each thread can create and set up its own mocks as if it's the only
+// thread.  However, for clarity of your tests we recommend you to set
+// up mocks in the main thread unless you have a good reason not to do
+// so.
+class GTEST_API_ InSequence {
+ public:
+  InSequence();
+  ~InSequence();
+ private:
+  bool sequence_created_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(InSequence);  // NOLINT
+} GTEST_ATTRIBUTE_UNUSED_;
+
+namespace internal {
+
+// Points to the implicit sequence introduced by a living InSequence
+// object (if any) in the current thread or NULL.
+GTEST_API_ extern ThreadLocal<Sequence*> g_gmock_implicit_sequence;
+
+// Base class for implementing expectations.
+//
+// There are two reasons for having a type-agnostic base class for
+// Expectation:
+//
+//   1. We need to store collections of expectations of different
+//   types (e.g. all pre-requisites of a particular expectation, all
+//   expectations in a sequence).  Therefore these expectation objects
+//   must share a common base class.
+//
+//   2. We can avoid binary code bloat by moving methods not depending
+//   on the template argument of Expectation to the base class.
+//
+// This class is internal and mustn't be used by user code directly.
+class GTEST_API_ ExpectationBase {
+ public:
+  // source_text is the EXPECT_CALL(...) source that created this Expectation.
+  ExpectationBase(const char* file, int line, const std::string& source_text);
+
+  virtual ~ExpectationBase();
+
+  // Where in the source file was the expectation spec defined?
+  const char* file() const { return file_; }
+  int line() const { return line_; }
+  const char* source_text() const { return source_text_.c_str(); }
+  // Returns the cardinality specified in the expectation spec.
+  const Cardinality& cardinality() const { return cardinality_; }
+
+  // Describes the source file location of this expectation.
+  void DescribeLocationTo(::std::ostream* os) const {
+    *os << FormatFileLocation(file(), line()) << " ";
+  }
+
+  // Describes how many times a function call matching this
+  // expectation has occurred.
+  void DescribeCallCountTo(::std::ostream* os) const
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex);
+
+  // If this mock method has an extra matcher (i.e. .With(matcher)),
+  // describes it to the ostream.
+  virtual void MaybeDescribeExtraMatcherTo(::std::ostream* os) = 0;
+
+ protected:
+  friend class ::testing::Expectation;
+  friend class UntypedFunctionMockerBase;
+
+  enum Clause {
+    // Don't change the order of the enum members!
+    kNone,
+    kWith,
+    kTimes,
+    kInSequence,
+    kAfter,
+    kWillOnce,
+    kWillRepeatedly,
+    kRetiresOnSaturation
+  };
+
+  typedef std::vector<const void*> UntypedActions;
+
+  // Returns an Expectation object that references and co-owns this
+  // expectation.
+  virtual Expectation GetHandle() = 0;
+
+  // Asserts that the EXPECT_CALL() statement has the given property.
+  void AssertSpecProperty(bool property,
+                          const std::string& failure_message) const {
+    Assert(property, file_, line_, failure_message);
+  }
+
+  // Expects that the EXPECT_CALL() statement has the given property.
+  void ExpectSpecProperty(bool property,
+                          const std::string& failure_message) const {
+    Expect(property, file_, line_, failure_message);
+  }
+
+  // Explicitly specifies the cardinality of this expectation.  Used
+  // by the subclasses to implement the .Times() clause.
+  void SpecifyCardinality(const Cardinality& cardinality);
+
+  // Returns true if and only if the user specified the cardinality
+  // explicitly using a .Times().
+  bool cardinality_specified() const { return cardinality_specified_; }
+
+  // Sets the cardinality of this expectation spec.
+  void set_cardinality(const Cardinality& a_cardinality) {
+    cardinality_ = a_cardinality;
+  }
+
+  // The following group of methods should only be called after the
+  // EXPECT_CALL() statement, and only when g_gmock_mutex is held by
+  // the current thread.
+
+  // Retires all pre-requisites of this expectation.
+  void RetireAllPreRequisites()
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex);
+
+  // Returns true if and only if this expectation is retired.
+  bool is_retired() const
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+    return retired_;
+  }
+
+  // Retires this expectation.
+  void Retire()
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+    retired_ = true;
+  }
+
+  // Returns true if and only if this expectation is satisfied.
+  bool IsSatisfied() const
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+    return cardinality().IsSatisfiedByCallCount(call_count_);
+  }
+
+  // Returns true if and only if this expectation is saturated.
+  bool IsSaturated() const
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+    return cardinality().IsSaturatedByCallCount(call_count_);
+  }
+
+  // Returns true if and only if this expectation is over-saturated.
+  bool IsOverSaturated() const
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+    return cardinality().IsOverSaturatedByCallCount(call_count_);
+  }
+
+  // Returns true if and only if all pre-requisites of this expectation are
+  // satisfied.
+  bool AllPrerequisitesAreSatisfied() const
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex);
+
+  // Adds unsatisfied pre-requisites of this expectation to 'result'.
+  void FindUnsatisfiedPrerequisites(ExpectationSet* result) const
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex);
+
+  // Returns the number this expectation has been invoked.
+  int call_count() const
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+    return call_count_;
+  }
+
+  // Increments the number this expectation has been invoked.
+  void IncrementCallCount()
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+    call_count_++;
+  }
+
+  // Checks the action count (i.e. the number of WillOnce() and
+  // WillRepeatedly() clauses) against the cardinality if this hasn't
+  // been done before.  Prints a warning if there are too many or too
+  // few actions.
+  void CheckActionCountIfNotDone() const
+      GTEST_LOCK_EXCLUDED_(mutex_);
+
+  friend class ::testing::Sequence;
+  friend class ::testing::internal::ExpectationTester;
+
+  template <typename Function>
+  friend class TypedExpectation;
+
+  // Implements the .Times() clause.
+  void UntypedTimes(const Cardinality& a_cardinality);
+
+  // This group of fields are part of the spec and won't change after
+  // an EXPECT_CALL() statement finishes.
+  const char* file_;          // The file that contains the expectation.
+  int line_;                  // The line number of the expectation.
+  const std::string source_text_;  // The EXPECT_CALL(...) source text.
+  // True if and only if the cardinality is specified explicitly.
+  bool cardinality_specified_;
+  Cardinality cardinality_;            // The cardinality of the expectation.
+  // The immediate pre-requisites (i.e. expectations that must be
+  // satisfied before this expectation can be matched) of this
+  // expectation.  We use std::shared_ptr in the set because we want an
+  // Expectation object to be co-owned by its FunctionMocker and its
+  // successors.  This allows multiple mock objects to be deleted at
+  // different times.
+  ExpectationSet immediate_prerequisites_;
+
+  // This group of fields are the current state of the expectation,
+  // and can change as the mock function is called.
+  int call_count_;  // How many times this expectation has been invoked.
+  bool retired_;    // True if and only if this expectation has retired.
+  UntypedActions untyped_actions_;
+  bool extra_matcher_specified_;
+  bool repeated_action_specified_;  // True if a WillRepeatedly() was specified.
+  bool retires_on_saturation_;
+  Clause last_clause_;
+  mutable bool action_count_checked_;  // Under mutex_.
+  mutable Mutex mutex_;  // Protects action_count_checked_.
+
+  GTEST_DISALLOW_ASSIGN_(ExpectationBase);
+};  // class ExpectationBase
+
+// Impements an expectation for the given function type.
+template <typename F>
+class TypedExpectation : public ExpectationBase {
+ public:
+  typedef typename Function<F>::ArgumentTuple ArgumentTuple;
+  typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple;
+  typedef typename Function<F>::Result Result;
+
+  TypedExpectation(FunctionMocker<F>* owner, const char* a_file, int a_line,
+                   const std::string& a_source_text,
+                   const ArgumentMatcherTuple& m)
+      : ExpectationBase(a_file, a_line, a_source_text),
+        owner_(owner),
+        matchers_(m),
+        // By default, extra_matcher_ should match anything.  However,
+        // we cannot initialize it with _ as that causes ambiguity between
+        // Matcher's copy and move constructor for some argument types.
+        extra_matcher_(A<const ArgumentTuple&>()),
+        repeated_action_(DoDefault()) {}
+
+  ~TypedExpectation() override {
+    // Check the validity of the action count if it hasn't been done
+    // yet (for example, if the expectation was never used).
+    CheckActionCountIfNotDone();
+    for (UntypedActions::const_iterator it = untyped_actions_.begin();
+         it != untyped_actions_.end(); ++it) {
+      delete static_cast<const Action<F>*>(*it);
+    }
+  }
+
+  // Implements the .With() clause.
+  TypedExpectation& With(const Matcher<const ArgumentTuple&>& m) {
+    if (last_clause_ == kWith) {
+      ExpectSpecProperty(false,
+                         ".With() cannot appear "
+                         "more than once in an EXPECT_CALL().");
+    } else {
+      ExpectSpecProperty(last_clause_ < kWith,
+                         ".With() must be the first "
+                         "clause in an EXPECT_CALL().");
+    }
+    last_clause_ = kWith;
+
+    extra_matcher_ = m;
+    extra_matcher_specified_ = true;
+    return *this;
+  }
+
+  // Implements the .Times() clause.
+  TypedExpectation& Times(const Cardinality& a_cardinality) {
+    ExpectationBase::UntypedTimes(a_cardinality);
+    return *this;
+  }
+
+  // Implements the .Times() clause.
+  TypedExpectation& Times(int n) {
+    return Times(Exactly(n));
+  }
+
+  // Implements the .InSequence() clause.
+  TypedExpectation& InSequence(const Sequence& s) {
+    ExpectSpecProperty(last_clause_ <= kInSequence,
+                       ".InSequence() cannot appear after .After(),"
+                       " .WillOnce(), .WillRepeatedly(), or "
+                       ".RetiresOnSaturation().");
+    last_clause_ = kInSequence;
+
+    s.AddExpectation(GetHandle());
+    return *this;
+  }
+  TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2) {
+    return InSequence(s1).InSequence(s2);
+  }
+  TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2,
+                               const Sequence& s3) {
+    return InSequence(s1, s2).InSequence(s3);
+  }
+  TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2,
+                               const Sequence& s3, const Sequence& s4) {
+    return InSequence(s1, s2, s3).InSequence(s4);
+  }
+  TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2,
+                               const Sequence& s3, const Sequence& s4,
+                               const Sequence& s5) {
+    return InSequence(s1, s2, s3, s4).InSequence(s5);
+  }
+
+  // Implements that .After() clause.
+  TypedExpectation& After(const ExpectationSet& s) {
+    ExpectSpecProperty(last_clause_ <= kAfter,
+                       ".After() cannot appear after .WillOnce(),"
+                       " .WillRepeatedly(), or "
+                       ".RetiresOnSaturation().");
+    last_clause_ = kAfter;
+
+    for (ExpectationSet::const_iterator it = s.begin(); it != s.end(); ++it) {
+      immediate_prerequisites_ += *it;
+    }
+    return *this;
+  }
+  TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2) {
+    return After(s1).After(s2);
+  }
+  TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2,
+                          const ExpectationSet& s3) {
+    return After(s1, s2).After(s3);
+  }
+  TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2,
+                          const ExpectationSet& s3, const ExpectationSet& s4) {
+    return After(s1, s2, s3).After(s4);
+  }
+  TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2,
+                          const ExpectationSet& s3, const ExpectationSet& s4,
+                          const ExpectationSet& s5) {
+    return After(s1, s2, s3, s4).After(s5);
+  }
+
+  // Implements the .WillOnce() clause.
+  TypedExpectation& WillOnce(const Action<F>& action) {
+    ExpectSpecProperty(last_clause_ <= kWillOnce,
+                       ".WillOnce() cannot appear after "
+                       ".WillRepeatedly() or .RetiresOnSaturation().");
+    last_clause_ = kWillOnce;
+
+    untyped_actions_.push_back(new Action<F>(action));
+    if (!cardinality_specified()) {
+      set_cardinality(Exactly(static_cast<int>(untyped_actions_.size())));
+    }
+    return *this;
+  }
+
+  // Implements the .WillRepeatedly() clause.
+  TypedExpectation& WillRepeatedly(const Action<F>& action) {
+    if (last_clause_ == kWillRepeatedly) {
+      ExpectSpecProperty(false,
+                         ".WillRepeatedly() cannot appear "
+                         "more than once in an EXPECT_CALL().");
+    } else {
+      ExpectSpecProperty(last_clause_ < kWillRepeatedly,
+                         ".WillRepeatedly() cannot appear "
+                         "after .RetiresOnSaturation().");
+    }
+    last_clause_ = kWillRepeatedly;
+    repeated_action_specified_ = true;
+
+    repeated_action_ = action;
+    if (!cardinality_specified()) {
+      set_cardinality(AtLeast(static_cast<int>(untyped_actions_.size())));
+    }
+
+    // Now that no more action clauses can be specified, we check
+    // whether their count makes sense.
+    CheckActionCountIfNotDone();
+    return *this;
+  }
+
+  // Implements the .RetiresOnSaturation() clause.
+  TypedExpectation& RetiresOnSaturation() {
+    ExpectSpecProperty(last_clause_ < kRetiresOnSaturation,
+                       ".RetiresOnSaturation() cannot appear "
+                       "more than once.");
+    last_clause_ = kRetiresOnSaturation;
+    retires_on_saturation_ = true;
+
+    // Now that no more action clauses can be specified, we check
+    // whether their count makes sense.
+    CheckActionCountIfNotDone();
+    return *this;
+  }
+
+  // Returns the matchers for the arguments as specified inside the
+  // EXPECT_CALL() macro.
+  const ArgumentMatcherTuple& matchers() const {
+    return matchers_;
+  }
+
+  // Returns the matcher specified by the .With() clause.
+  const Matcher<const ArgumentTuple&>& extra_matcher() const {
+    return extra_matcher_;
+  }
+
+  // Returns the action specified by the .WillRepeatedly() clause.
+  const Action<F>& repeated_action() const { return repeated_action_; }
+
+  // If this mock method has an extra matcher (i.e. .With(matcher)),
+  // describes it to the ostream.
+  void MaybeDescribeExtraMatcherTo(::std::ostream* os) override {
+    if (extra_matcher_specified_) {
+      *os << "    Expected args: ";
+      extra_matcher_.DescribeTo(os);
+      *os << "\n";
+    }
+  }
+
+ private:
+  template <typename Function>
+  friend class FunctionMocker;
+
+  // Returns an Expectation object that references and co-owns this
+  // expectation.
+  Expectation GetHandle() override { return owner_->GetHandleOf(this); }
+
+  // The following methods will be called only after the EXPECT_CALL()
+  // statement finishes and when the current thread holds
+  // g_gmock_mutex.
+
+  // Returns true if and only if this expectation matches the given arguments.
+  bool Matches(const ArgumentTuple& args) const
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+    return TupleMatches(matchers_, args) && extra_matcher_.Matches(args);
+  }
+
+  // Returns true if and only if this expectation should handle the given
+  // arguments.
+  bool ShouldHandleArguments(const ArgumentTuple& args) const
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+
+    // In case the action count wasn't checked when the expectation
+    // was defined (e.g. if this expectation has no WillRepeatedly()
+    // or RetiresOnSaturation() clause), we check it when the
+    // expectation is used for the first time.
+    CheckActionCountIfNotDone();
+    return !is_retired() && AllPrerequisitesAreSatisfied() && Matches(args);
+  }
+
+  // Describes the result of matching the arguments against this
+  // expectation to the given ostream.
+  void ExplainMatchResultTo(
+      const ArgumentTuple& args,
+      ::std::ostream* os) const
+          GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+
+    if (is_retired()) {
+      *os << "         Expected: the expectation is active\n"
+          << "           Actual: it is retired\n";
+    } else if (!Matches(args)) {
+      if (!TupleMatches(matchers_, args)) {
+        ExplainMatchFailureTupleTo(matchers_, args, os);
+      }
+      StringMatchResultListener listener;
+      if (!extra_matcher_.MatchAndExplain(args, &listener)) {
+        *os << "    Expected args: ";
+        extra_matcher_.DescribeTo(os);
+        *os << "\n           Actual: don't match";
+
+        internal::PrintIfNotEmpty(listener.str(), os);
+        *os << "\n";
+      }
+    } else if (!AllPrerequisitesAreSatisfied()) {
+      *os << "         Expected: all pre-requisites are satisfied\n"
+          << "           Actual: the following immediate pre-requisites "
+          << "are not satisfied:\n";
+      ExpectationSet unsatisfied_prereqs;
+      FindUnsatisfiedPrerequisites(&unsatisfied_prereqs);
+      int i = 0;
+      for (ExpectationSet::const_iterator it = unsatisfied_prereqs.begin();
+           it != unsatisfied_prereqs.end(); ++it) {
+        it->expectation_base()->DescribeLocationTo(os);
+        *os << "pre-requisite #" << i++ << "\n";
+      }
+      *os << "                   (end of pre-requisites)\n";
+    } else {
+      // This line is here just for completeness' sake.  It will never
+      // be executed as currently the ExplainMatchResultTo() function
+      // is called only when the mock function call does NOT match the
+      // expectation.
+      *os << "The call matches the expectation.\n";
+    }
+  }
+
+  // Returns the action that should be taken for the current invocation.
+  const Action<F>& GetCurrentAction(const FunctionMocker<F>* mocker,
+                                    const ArgumentTuple& args) const
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+    const int count = call_count();
+    Assert(count >= 1, __FILE__, __LINE__,
+           "call_count() is <= 0 when GetCurrentAction() is "
+           "called - this should never happen.");
+
+    const int action_count = static_cast<int>(untyped_actions_.size());
+    if (action_count > 0 && !repeated_action_specified_ &&
+        count > action_count) {
+      // If there is at least one WillOnce() and no WillRepeatedly(),
+      // we warn the user when the WillOnce() clauses ran out.
+      ::std::stringstream ss;
+      DescribeLocationTo(&ss);
+      ss << "Actions ran out in " << source_text() << "...\n"
+         << "Called " << count << " times, but only "
+         << action_count << " WillOnce()"
+         << (action_count == 1 ? " is" : "s are") << " specified - ";
+      mocker->DescribeDefaultActionTo(args, &ss);
+      Log(kWarning, ss.str(), 1);
+    }
+
+    return count <= action_count
+               ? *static_cast<const Action<F>*>(
+                     untyped_actions_[static_cast<size_t>(count - 1)])
+               : repeated_action();
+  }
+
+  // Given the arguments of a mock function call, if the call will
+  // over-saturate this expectation, returns the default action;
+  // otherwise, returns the next action in this expectation.  Also
+  // describes *what* happened to 'what', and explains *why* Google
+  // Mock does it to 'why'.  This method is not const as it calls
+  // IncrementCallCount().  A return value of NULL means the default
+  // action.
+  const Action<F>* GetActionForArguments(const FunctionMocker<F>* mocker,
+                                         const ArgumentTuple& args,
+                                         ::std::ostream* what,
+                                         ::std::ostream* why)
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+    if (IsSaturated()) {
+      // We have an excessive call.
+      IncrementCallCount();
+      *what << "Mock function called more times than expected - ";
+      mocker->DescribeDefaultActionTo(args, what);
+      DescribeCallCountTo(why);
+
+      return nullptr;
+    }
+
+    IncrementCallCount();
+    RetireAllPreRequisites();
+
+    if (retires_on_saturation_ && IsSaturated()) {
+      Retire();
+    }
+
+    // Must be done after IncrementCount()!
+    *what << "Mock function call matches " << source_text() <<"...\n";
+    return &(GetCurrentAction(mocker, args));
+  }
+
+  // All the fields below won't change once the EXPECT_CALL()
+  // statement finishes.
+  FunctionMocker<F>* const owner_;
+  ArgumentMatcherTuple matchers_;
+  Matcher<const ArgumentTuple&> extra_matcher_;
+  Action<F> repeated_action_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(TypedExpectation);
+};  // class TypedExpectation
+
+// A MockSpec object is used by ON_CALL() or EXPECT_CALL() for
+// specifying the default behavior of, or expectation on, a mock
+// function.
+
+// Note: class MockSpec really belongs to the ::testing namespace.
+// However if we define it in ::testing, MSVC will complain when
+// classes in ::testing::internal declare it as a friend class
+// template.  To workaround this compiler bug, we define MockSpec in
+// ::testing::internal and import it into ::testing.
+
+// Logs a message including file and line number information.
+GTEST_API_ void LogWithLocation(testing::internal::LogSeverity severity,
+                                const char* file, int line,
+                                const std::string& message);
+
+template <typename F>
+class MockSpec {
+ public:
+  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
+  typedef typename internal::Function<F>::ArgumentMatcherTuple
+      ArgumentMatcherTuple;
+
+  // Constructs a MockSpec object, given the function mocker object
+  // that the spec is associated with.
+  MockSpec(internal::FunctionMocker<F>* function_mocker,
+           const ArgumentMatcherTuple& matchers)
+      : function_mocker_(function_mocker), matchers_(matchers) {}
+
+  // Adds a new default action spec to the function mocker and returns
+  // the newly created spec.
+  internal::OnCallSpec<F>& InternalDefaultActionSetAt(
+      const char* file, int line, const char* obj, const char* call) {
+    LogWithLocation(internal::kInfo, file, line,
+                    std::string("ON_CALL(") + obj + ", " + call + ") invoked");
+    return function_mocker_->AddNewOnCallSpec(file, line, matchers_);
+  }
+
+  // Adds a new expectation spec to the function mocker and returns
+  // the newly created spec.
+  internal::TypedExpectation<F>& InternalExpectedAt(
+      const char* file, int line, const char* obj, const char* call) {
+    const std::string source_text(std::string("EXPECT_CALL(") + obj + ", " +
+                                  call + ")");
+    LogWithLocation(internal::kInfo, file, line, source_text + " invoked");
+    return function_mocker_->AddNewExpectation(
+        file, line, source_text, matchers_);
+  }
+
+  // This operator overload is used to swallow the superfluous parameter list
+  // introduced by the ON/EXPECT_CALL macros. See the macro comments for more
+  // explanation.
+  MockSpec<F>& operator()(const internal::WithoutMatchers&, void* const) {
+    return *this;
+  }
+
+ private:
+  template <typename Function>
+  friend class internal::FunctionMocker;
+
+  // The function mocker that owns this spec.
+  internal::FunctionMocker<F>* const function_mocker_;
+  // The argument matchers specified in the spec.
+  ArgumentMatcherTuple matchers_;
+
+  GTEST_DISALLOW_ASSIGN_(MockSpec);
+};  // class MockSpec
+
+// Wrapper type for generically holding an ordinary value or lvalue reference.
+// If T is not a reference type, it must be copyable or movable.
+// ReferenceOrValueWrapper<T> is movable, and will also be copyable unless
+// T is a move-only value type (which means that it will always be copyable
+// if the current platform does not support move semantics).
+//
+// The primary template defines handling for values, but function header
+// comments describe the contract for the whole template (including
+// specializations).
+template <typename T>
+class ReferenceOrValueWrapper {
+ public:
+  // Constructs a wrapper from the given value/reference.
+  explicit ReferenceOrValueWrapper(T value)
+      : value_(std::move(value)) {
+  }
+
+  // Unwraps and returns the underlying value/reference, exactly as
+  // originally passed. The behavior of calling this more than once on
+  // the same object is unspecified.
+  T Unwrap() { return std::move(value_); }
+
+  // Provides nondestructive access to the underlying value/reference.
+  // Always returns a const reference (more precisely,
+  // const std::add_lvalue_reference<T>::type). The behavior of calling this
+  // after calling Unwrap on the same object is unspecified.
+  const T& Peek() const {
+    return value_;
+  }
+
+ private:
+  T value_;
+};
+
+// Specialization for lvalue reference types. See primary template
+// for documentation.
+template <typename T>
+class ReferenceOrValueWrapper<T&> {
+ public:
+  // Workaround for debatable pass-by-reference lint warning (c-library-team
+  // policy precludes NOLINT in this context)
+  typedef T& reference;
+  explicit ReferenceOrValueWrapper(reference ref)
+      : value_ptr_(&ref) {}
+  T& Unwrap() { return *value_ptr_; }
+  const T& Peek() const { return *value_ptr_; }
+
+ private:
+  T* value_ptr_;
+};
+
+// MSVC warns about using 'this' in base member initializer list, so
+// we need to temporarily disable the warning.  We have to do it for
+// the entire class to suppress the warning, even though it's about
+// the constructor only.
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4355)
+
+// C++ treats the void type specially.  For example, you cannot define
+// a void-typed variable or pass a void value to a function.
+// ActionResultHolder<T> holds a value of type T, where T must be a
+// copyable type or void (T doesn't need to be default-constructable).
+// It hides the syntactic difference between void and other types, and
+// is used to unify the code for invoking both void-returning and
+// non-void-returning mock functions.
+
+// Untyped base class for ActionResultHolder<T>.
+class UntypedActionResultHolderBase {
+ public:
+  virtual ~UntypedActionResultHolderBase() {}
+
+  // Prints the held value as an action's result to os.
+  virtual void PrintAsActionResult(::std::ostream* os) const = 0;
+};
+
+// This generic definition is used when T is not void.
+template <typename T>
+class ActionResultHolder : public UntypedActionResultHolderBase {
+ public:
+  // Returns the held value. Must not be called more than once.
+  T Unwrap() {
+    return result_.Unwrap();
+  }
+
+  // Prints the held value as an action's result to os.
+  void PrintAsActionResult(::std::ostream* os) const override {
+    *os << "\n          Returns: ";
+    // T may be a reference type, so we don't use UniversalPrint().
+    UniversalPrinter<T>::Print(result_.Peek(), os);
+  }
+
+  // Performs the given mock function's default action and returns the
+  // result in a new-ed ActionResultHolder.
+  template <typename F>
+  static ActionResultHolder* PerformDefaultAction(
+      const FunctionMocker<F>* func_mocker,
+      typename Function<F>::ArgumentTuple&& args,
+      const std::string& call_description) {
+    return new ActionResultHolder(Wrapper(func_mocker->PerformDefaultAction(
+        std::move(args), call_description)));
+  }
+
+  // Performs the given action and returns the result in a new-ed
+  // ActionResultHolder.
+  template <typename F>
+  static ActionResultHolder* PerformAction(
+      const Action<F>& action, typename Function<F>::ArgumentTuple&& args) {
+    return new ActionResultHolder(
+        Wrapper(action.Perform(std::move(args))));
+  }
+
+ private:
+  typedef ReferenceOrValueWrapper<T> Wrapper;
+
+  explicit ActionResultHolder(Wrapper result)
+      : result_(std::move(result)) {
+  }
+
+  Wrapper result_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ActionResultHolder);
+};
+
+// Specialization for T = void.
+template <>
+class ActionResultHolder<void> : public UntypedActionResultHolderBase {
+ public:
+  void Unwrap() { }
+
+  void PrintAsActionResult(::std::ostream* /* os */) const override {}
+
+  // Performs the given mock function's default action and returns ownership
+  // of an empty ActionResultHolder*.
+  template <typename F>
+  static ActionResultHolder* PerformDefaultAction(
+      const FunctionMocker<F>* func_mocker,
+      typename Function<F>::ArgumentTuple&& args,
+      const std::string& call_description) {
+    func_mocker->PerformDefaultAction(std::move(args), call_description);
+    return new ActionResultHolder;
+  }
+
+  // Performs the given action and returns ownership of an empty
+  // ActionResultHolder*.
+  template <typename F>
+  static ActionResultHolder* PerformAction(
+      const Action<F>& action, typename Function<F>::ArgumentTuple&& args) {
+    action.Perform(std::move(args));
+    return new ActionResultHolder;
+  }
+
+ private:
+  ActionResultHolder() {}
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ActionResultHolder);
+};
+
+template <typename F>
+class FunctionMocker;
+
+template <typename R, typename... Args>
+class FunctionMocker<R(Args...)> final : public UntypedFunctionMockerBase {
+  using F = R(Args...);
+
+ public:
+  using Result = R;
+  using ArgumentTuple = std::tuple<Args...>;
+  using ArgumentMatcherTuple = std::tuple<Matcher<Args>...>;
+
+  FunctionMocker() {}
+
+  // There is no generally useful and implementable semantics of
+  // copying a mock object, so copying a mock is usually a user error.
+  // Thus we disallow copying function mockers.  If the user really
+  // wants to copy a mock object, they should implement their own copy
+  // operation, for example:
+  //
+  //   class MockFoo : public Foo {
+  //    public:
+  //     // Defines a copy constructor explicitly.
+  //     MockFoo(const MockFoo& src) {}
+  //     ...
+  //   };
+  FunctionMocker(const FunctionMocker&) = delete;
+  FunctionMocker& operator=(const FunctionMocker&) = delete;
+
+  // The destructor verifies that all expectations on this mock
+  // function have been satisfied.  If not, it will report Google Test
+  // non-fatal failures for the violations.
+  ~FunctionMocker() override GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+    MutexLock l(&g_gmock_mutex);
+    VerifyAndClearExpectationsLocked();
+    Mock::UnregisterLocked(this);
+    ClearDefaultActionsLocked();
+  }
+
+  // Returns the ON_CALL spec that matches this mock function with the
+  // given arguments; returns NULL if no matching ON_CALL is found.
+  // L = *
+  const OnCallSpec<F>* FindOnCallSpec(
+      const ArgumentTuple& args) const {
+    for (UntypedOnCallSpecs::const_reverse_iterator it
+             = untyped_on_call_specs_.rbegin();
+         it != untyped_on_call_specs_.rend(); ++it) {
+      const OnCallSpec<F>* spec = static_cast<const OnCallSpec<F>*>(*it);
+      if (spec->Matches(args))
+        return spec;
+    }
+
+    return nullptr;
+  }
+
+  // Performs the default action of this mock function on the given
+  // arguments and returns the result. Asserts (or throws if
+  // exceptions are enabled) with a helpful call descrption if there
+  // is no valid return value. This method doesn't depend on the
+  // mutable state of this object, and thus can be called concurrently
+  // without locking.
+  // L = *
+  Result PerformDefaultAction(ArgumentTuple&& args,
+                              const std::string& call_description) const {
+    const OnCallSpec<F>* const spec =
+        this->FindOnCallSpec(args);
+    if (spec != nullptr) {
+      return spec->GetAction().Perform(std::move(args));
+    }
+    const std::string message =
+        call_description +
+        "\n    The mock function has no default action "
+        "set, and its return type has no default value set.";
+#if GTEST_HAS_EXCEPTIONS
+    if (!DefaultValue<Result>::Exists()) {
+      throw std::runtime_error(message);
+    }
+#else
+    Assert(DefaultValue<Result>::Exists(), "", -1, message);
+#endif
+    return DefaultValue<Result>::Get();
+  }
+
+  // Performs the default action with the given arguments and returns
+  // the action's result.  The call description string will be used in
+  // the error message to describe the call in the case the default
+  // action fails.  The caller is responsible for deleting the result.
+  // L = *
+  UntypedActionResultHolderBase* UntypedPerformDefaultAction(
+      void* untyped_args,  // must point to an ArgumentTuple
+      const std::string& call_description) const override {
+    ArgumentTuple* args = static_cast<ArgumentTuple*>(untyped_args);
+    return ResultHolder::PerformDefaultAction(this, std::move(*args),
+                                              call_description);
+  }
+
+  // Performs the given action with the given arguments and returns
+  // the action's result.  The caller is responsible for deleting the
+  // result.
+  // L = *
+  UntypedActionResultHolderBase* UntypedPerformAction(
+      const void* untyped_action, void* untyped_args) const override {
+    // Make a copy of the action before performing it, in case the
+    // action deletes the mock object (and thus deletes itself).
+    const Action<F> action = *static_cast<const Action<F>*>(untyped_action);
+    ArgumentTuple* args = static_cast<ArgumentTuple*>(untyped_args);
+    return ResultHolder::PerformAction(action, std::move(*args));
+  }
+
+  // Implements UntypedFunctionMockerBase::ClearDefaultActionsLocked():
+  // clears the ON_CALL()s set on this mock function.
+  void ClearDefaultActionsLocked() override
+      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+
+    // Deleting our default actions may trigger other mock objects to be
+    // deleted, for example if an action contains a reference counted smart
+    // pointer to that mock object, and that is the last reference. So if we
+    // delete our actions within the context of the global mutex we may deadlock
+    // when this method is called again. Instead, make a copy of the set of
+    // actions to delete, clear our set within the mutex, and then delete the
+    // actions outside of the mutex.
+    UntypedOnCallSpecs specs_to_delete;
+    untyped_on_call_specs_.swap(specs_to_delete);
+
+    g_gmock_mutex.Unlock();
+    for (UntypedOnCallSpecs::const_iterator it =
+             specs_to_delete.begin();
+         it != specs_to_delete.end(); ++it) {
+      delete static_cast<const OnCallSpec<F>*>(*it);
+    }
+
+    // Lock the mutex again, since the caller expects it to be locked when we
+    // return.
+    g_gmock_mutex.Lock();
+  }
+
+  // Returns the result of invoking this mock function with the given
+  // arguments.  This function can be safely called from multiple
+  // threads concurrently.
+  Result Invoke(Args... args) GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+    ArgumentTuple tuple(std::forward<Args>(args)...);
+    std::unique_ptr<ResultHolder> holder(DownCast_<ResultHolder*>(
+        this->UntypedInvokeWith(static_cast<void*>(&tuple))));
+    return holder->Unwrap();
+  }
+
+  MockSpec<F> With(Matcher<Args>... m) {
+    return MockSpec<F>(this, ::std::make_tuple(std::move(m)...));
+  }
+
+ protected:
+  template <typename Function>
+  friend class MockSpec;
+
+  typedef ActionResultHolder<Result> ResultHolder;
+
+  // Adds and returns a default action spec for this mock function.
+  OnCallSpec<F>& AddNewOnCallSpec(
+      const char* file, int line,
+      const ArgumentMatcherTuple& m)
+          GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+    Mock::RegisterUseByOnCallOrExpectCall(MockObject(), file, line);
+    OnCallSpec<F>* const on_call_spec = new OnCallSpec<F>(file, line, m);
+    untyped_on_call_specs_.push_back(on_call_spec);
+    return *on_call_spec;
+  }
+
+  // Adds and returns an expectation spec for this mock function.
+  TypedExpectation<F>& AddNewExpectation(const char* file, int line,
+                                         const std::string& source_text,
+                                         const ArgumentMatcherTuple& m)
+      GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+    Mock::RegisterUseByOnCallOrExpectCall(MockObject(), file, line);
+    TypedExpectation<F>* const expectation =
+        new TypedExpectation<F>(this, file, line, source_text, m);
+    const std::shared_ptr<ExpectationBase> untyped_expectation(expectation);
+    // See the definition of untyped_expectations_ for why access to
+    // it is unprotected here.
+    untyped_expectations_.push_back(untyped_expectation);
+
+    // Adds this expectation into the implicit sequence if there is one.
+    Sequence* const implicit_sequence = g_gmock_implicit_sequence.get();
+    if (implicit_sequence != nullptr) {
+      implicit_sequence->AddExpectation(Expectation(untyped_expectation));
+    }
+
+    return *expectation;
+  }
+
+ private:
+  template <typename Func> friend class TypedExpectation;
+
+  // Some utilities needed for implementing UntypedInvokeWith().
+
+  // Describes what default action will be performed for the given
+  // arguments.
+  // L = *
+  void DescribeDefaultActionTo(const ArgumentTuple& args,
+                               ::std::ostream* os) const {
+    const OnCallSpec<F>* const spec = FindOnCallSpec(args);
+
+    if (spec == nullptr) {
+      *os << (std::is_void<Result>::value ? "returning directly.\n"
+                                          : "returning default value.\n");
+    } else {
+      *os << "taking default action specified at:\n"
+          << FormatFileLocation(spec->file(), spec->line()) << "\n";
+    }
+  }
+
+  // Writes a message that the call is uninteresting (i.e. neither
+  // explicitly expected nor explicitly unexpected) to the given
+  // ostream.
+  void UntypedDescribeUninterestingCall(const void* untyped_args,
+                                        ::std::ostream* os) const override
+      GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+    const ArgumentTuple& args =
+        *static_cast<const ArgumentTuple*>(untyped_args);
+    *os << "Uninteresting mock function call - ";
+    DescribeDefaultActionTo(args, os);
+    *os << "    Function call: " << Name();
+    UniversalPrint(args, os);
+  }
+
+  // Returns the expectation that matches the given function arguments
+  // (or NULL is there's no match); when a match is found,
+  // untyped_action is set to point to the action that should be
+  // performed (or NULL if the action is "do default"), and
+  // is_excessive is modified to indicate whether the call exceeds the
+  // expected number.
+  //
+  // Critical section: We must find the matching expectation and the
+  // corresponding action that needs to be taken in an ATOMIC
+  // transaction.  Otherwise another thread may call this mock
+  // method in the middle and mess up the state.
+  //
+  // However, performing the action has to be left out of the critical
+  // section.  The reason is that we have no control on what the
+  // action does (it can invoke an arbitrary user function or even a
+  // mock function) and excessive locking could cause a dead lock.
+  const ExpectationBase* UntypedFindMatchingExpectation(
+      const void* untyped_args, const void** untyped_action, bool* is_excessive,
+      ::std::ostream* what, ::std::ostream* why) override
+      GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+    const ArgumentTuple& args =
+        *static_cast<const ArgumentTuple*>(untyped_args);
+    MutexLock l(&g_gmock_mutex);
+    TypedExpectation<F>* exp = this->FindMatchingExpectationLocked(args);
+    if (exp == nullptr) {  // A match wasn't found.
+      this->FormatUnexpectedCallMessageLocked(args, what, why);
+      return nullptr;
+    }
+
+    // This line must be done before calling GetActionForArguments(),
+    // which will increment the call count for *exp and thus affect
+    // its saturation status.
+    *is_excessive = exp->IsSaturated();
+    const Action<F>* action = exp->GetActionForArguments(this, args, what, why);
+    if (action != nullptr && action->IsDoDefault())
+      action = nullptr;  // Normalize "do default" to NULL.
+    *untyped_action = action;
+    return exp;
+  }
+
+  // Prints the given function arguments to the ostream.
+  void UntypedPrintArgs(const void* untyped_args,
+                        ::std::ostream* os) const override {
+    const ArgumentTuple& args =
+        *static_cast<const ArgumentTuple*>(untyped_args);
+    UniversalPrint(args, os);
+  }
+
+  // Returns the expectation that matches the arguments, or NULL if no
+  // expectation matches them.
+  TypedExpectation<F>* FindMatchingExpectationLocked(
+      const ArgumentTuple& args) const
+          GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+    // See the definition of untyped_expectations_ for why access to
+    // it is unprotected here.
+    for (typename UntypedExpectations::const_reverse_iterator it =
+             untyped_expectations_.rbegin();
+         it != untyped_expectations_.rend(); ++it) {
+      TypedExpectation<F>* const exp =
+          static_cast<TypedExpectation<F>*>(it->get());
+      if (exp->ShouldHandleArguments(args)) {
+        return exp;
+      }
+    }
+    return nullptr;
+  }
+
+  // Returns a message that the arguments don't match any expectation.
+  void FormatUnexpectedCallMessageLocked(
+      const ArgumentTuple& args,
+      ::std::ostream* os,
+      ::std::ostream* why) const
+          GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+    *os << "\nUnexpected mock function call - ";
+    DescribeDefaultActionTo(args, os);
+    PrintTriedExpectationsLocked(args, why);
+  }
+
+  // Prints a list of expectations that have been tried against the
+  // current mock function call.
+  void PrintTriedExpectationsLocked(
+      const ArgumentTuple& args,
+      ::std::ostream* why) const
+          GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+    g_gmock_mutex.AssertHeld();
+    const size_t count = untyped_expectations_.size();
+    *why << "Google Mock tried the following " << count << " "
+         << (count == 1 ? "expectation, but it didn't match" :
+             "expectations, but none matched")
+         << ":\n";
+    for (size_t i = 0; i < count; i++) {
+      TypedExpectation<F>* const expectation =
+          static_cast<TypedExpectation<F>*>(untyped_expectations_[i].get());
+      *why << "\n";
+      expectation->DescribeLocationTo(why);
+      if (count > 1) {
+        *why << "tried expectation #" << i << ": ";
+      }
+      *why << expectation->source_text() << "...\n";
+      expectation->ExplainMatchResultTo(args, why);
+      expectation->DescribeCallCountTo(why);
+    }
+  }
+};  // class FunctionMocker
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4355
+
+// Reports an uninteresting call (whose description is in msg) in the
+// manner specified by 'reaction'.
+void ReportUninterestingCall(CallReaction reaction, const std::string& msg);
+
+}  // namespace internal
+
+// A MockFunction<F> class has one mock method whose type is F.  It is
+// useful when you just want your test code to emit some messages and
+// have Google Mock verify the right messages are sent (and perhaps at
+// the right times).  For example, if you are exercising code:
+//
+//   Foo(1);
+//   Foo(2);
+//   Foo(3);
+//
+// and want to verify that Foo(1) and Foo(3) both invoke
+// mock.Bar("a"), but Foo(2) doesn't invoke anything, you can write:
+//
+// TEST(FooTest, InvokesBarCorrectly) {
+//   MyMock mock;
+//   MockFunction<void(string check_point_name)> check;
+//   {
+//     InSequence s;
+//
+//     EXPECT_CALL(mock, Bar("a"));
+//     EXPECT_CALL(check, Call("1"));
+//     EXPECT_CALL(check, Call("2"));
+//     EXPECT_CALL(mock, Bar("a"));
+//   }
+//   Foo(1);
+//   check.Call("1");
+//   Foo(2);
+//   check.Call("2");
+//   Foo(3);
+// }
+//
+// The expectation spec says that the first Bar("a") must happen
+// before check point "1", the second Bar("a") must happen after check
+// point "2", and nothing should happen between the two check
+// points. The explicit check points make it easy to tell which
+// Bar("a") is called by which call to Foo().
+//
+// MockFunction<F> can also be used to exercise code that accepts
+// std::function<F> callbacks. To do so, use AsStdFunction() method
+// to create std::function proxy forwarding to original object's Call.
+// Example:
+//
+// TEST(FooTest, RunsCallbackWithBarArgument) {
+//   MockFunction<int(string)> callback;
+//   EXPECT_CALL(callback, Call("bar")).WillOnce(Return(1));
+//   Foo(callback.AsStdFunction());
+// }
+template <typename F>
+class MockFunction;
+
+template <typename R, typename... Args>
+class MockFunction<R(Args...)> {
+ public:
+  MockFunction() {}
+  MockFunction(const MockFunction&) = delete;
+  MockFunction& operator=(const MockFunction&) = delete;
+
+  std::function<R(Args...)> AsStdFunction() {
+    return [this](Args... args) -> R {
+      return this->Call(std::forward<Args>(args)...);
+    };
+  }
+
+  // Implementation detail: the expansion of the MOCK_METHOD macro.
+  R Call(Args... args) {
+    mock_.SetOwnerAndName(this, "Call");
+    return mock_.Invoke(std::forward<Args>(args)...);
+  }
+
+  internal::MockSpec<R(Args...)> gmock_Call(Matcher<Args>... m) {
+    mock_.RegisterOwner(this);
+    return mock_.With(std::move(m)...);
+  }
+
+  internal::MockSpec<R(Args...)> gmock_Call(const internal::WithoutMatchers&,
+                                            R (*)(Args...)) {
+    return this->gmock_Call(::testing::A<Args>()...);
+  }
+
+ private:
+  internal::FunctionMocker<R(Args...)> mock_;
+};
+
+// The style guide prohibits "using" statements in a namespace scope
+// inside a header file.  However, the MockSpec class template is
+// meant to be defined in the ::testing namespace.  The following line
+// is just a trick for working around a bug in MSVC 8.0, which cannot
+// handle it if we define MockSpec in ::testing.
+using internal::MockSpec;
+
+// Const(x) is a convenient function for obtaining a const reference
+// to x.  This is useful for setting expectations on an overloaded
+// const mock method, e.g.
+//
+//   class MockFoo : public FooInterface {
+//    public:
+//     MOCK_METHOD0(Bar, int());
+//     MOCK_CONST_METHOD0(Bar, int&());
+//   };
+//
+//   MockFoo foo;
+//   // Expects a call to non-const MockFoo::Bar().
+//   EXPECT_CALL(foo, Bar());
+//   // Expects a call to const MockFoo::Bar().
+//   EXPECT_CALL(Const(foo), Bar());
+template <typename T>
+inline const T& Const(const T& x) { return x; }
+
+// Constructs an Expectation object that references and co-owns exp.
+inline Expectation::Expectation(internal::ExpectationBase& exp)  // NOLINT
+    : expectation_base_(exp.GetHandle().expectation_base()) {}
+
+}  // namespace testing
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
+// Implementation for ON_CALL and EXPECT_CALL macros. A separate macro is
+// required to avoid compile errors when the name of the method used in call is
+// a result of macro expansion. See CompilesWithMethodNameExpandedFromMacro
+// tests in internal/gmock-spec-builders_test.cc for more details.
+//
+// This macro supports statements both with and without parameter matchers. If
+// the parameter list is omitted, gMock will accept any parameters, which allows
+// tests to be written that don't need to encode the number of method
+// parameter. This technique may only be used for non-overloaded methods.
+//
+//   // These are the same:
+//   ON_CALL(mock, NoArgsMethod()).WillByDefault(...);
+//   ON_CALL(mock, NoArgsMethod).WillByDefault(...);
+//
+//   // As are these:
+//   ON_CALL(mock, TwoArgsMethod(_, _)).WillByDefault(...);
+//   ON_CALL(mock, TwoArgsMethod).WillByDefault(...);
+//
+//   // Can also specify args if you want, of course:
+//   ON_CALL(mock, TwoArgsMethod(_, 45)).WillByDefault(...);
+//
+//   // Overloads work as long as you specify parameters:
+//   ON_CALL(mock, OverloadedMethod(_)).WillByDefault(...);
+//   ON_CALL(mock, OverloadedMethod(_, _)).WillByDefault(...);
+//
+//   // Oops! Which overload did you want?
+//   ON_CALL(mock, OverloadedMethod).WillByDefault(...);
+//     => ERROR: call to member function 'gmock_OverloadedMethod' is ambiguous
+//
+// How this works: The mock class uses two overloads of the gmock_Method
+// expectation setter method plus an operator() overload on the MockSpec object.
+// In the matcher list form, the macro expands to:
+//
+//   // This statement:
+//   ON_CALL(mock, TwoArgsMethod(_, 45))...
+//
+//   // ...expands to:
+//   mock.gmock_TwoArgsMethod(_, 45)(WithoutMatchers(), nullptr)...
+//   |-------------v---------------||------------v-------------|
+//       invokes first overload        swallowed by operator()
+//
+//   // ...which is essentially:
+//   mock.gmock_TwoArgsMethod(_, 45)...
+//
+// Whereas the form without a matcher list:
+//
+//   // This statement:
+//   ON_CALL(mock, TwoArgsMethod)...
+//
+//   // ...expands to:
+//   mock.gmock_TwoArgsMethod(WithoutMatchers(), nullptr)...
+//   |-----------------------v--------------------------|
+//                 invokes second overload
+//
+//   // ...which is essentially:
+//   mock.gmock_TwoArgsMethod(_, _)...
+//
+// The WithoutMatchers() argument is used to disambiguate overloads and to
+// block the caller from accidentally invoking the second overload directly. The
+// second argument is an internal type derived from the method signature. The
+// failure to disambiguate two overloads of this method in the ON_CALL statement
+// is how we block callers from setting expectations on overloaded methods.
+#define GMOCK_ON_CALL_IMPL_(mock_expr, Setter, call)                    \
+  ((mock_expr).gmock_##call)(::testing::internal::GetWithoutMatchers(), \
+                             nullptr)                                   \
+      .Setter(__FILE__, __LINE__, #mock_expr, #call)
+
+#define ON_CALL(obj, call) \
+  GMOCK_ON_CALL_IMPL_(obj, InternalDefaultActionSetAt, call)
+
+#define EXPECT_CALL(obj, call) \
+  GMOCK_ON_CALL_IMPL_(obj, InternalExpectedAt, call)
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/gmock.h b/build/_deps/googletest-src/googlemock/include/gmock/gmock.h
new file mode 100644
index 0000000000000000000000000000000000000000..99c3d7871d0f92d472536d54035bd97e48ec71ca
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/gmock.h
@@ -0,0 +1,101 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This is the main header file a user should include.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_H_
+
+// This file implements the following syntax:
+//
+//   ON_CALL(mock_object, Method(...))
+//     .With(...) ?
+//     .WillByDefault(...);
+//
+// where With() is optional and WillByDefault() must appear exactly
+// once.
+//
+//   EXPECT_CALL(mock_object, Method(...))
+//     .With(...) ?
+//     .Times(...) ?
+//     .InSequence(...) *
+//     .WillOnce(...) *
+//     .WillRepeatedly(...) ?
+//     .RetiresOnSaturation() ? ;
+//
+// where all clauses are optional and WillOnce() can be repeated.
+
+#include "gmock/gmock-actions.h"
+#include "gmock/gmock-cardinalities.h"
+#include "gmock/gmock-function-mocker.h"
+#include "gmock/gmock-generated-actions.h"
+#include "gmock/gmock-generated-function-mockers.h"
+#include "gmock/gmock-generated-matchers.h"
+#include "gmock/gmock-matchers.h"
+#include "gmock/gmock-more-actions.h"
+#include "gmock/gmock-more-matchers.h"
+#include "gmock/gmock-nice-strict.h"
+#include "gmock/internal/gmock-internal-utils.h"
+
+namespace testing {
+
+// Declares Google Mock flags that we want a user to use programmatically.
+GMOCK_DECLARE_bool_(catch_leaked_mocks);
+GMOCK_DECLARE_string_(verbose);
+GMOCK_DECLARE_int32_(default_mock_behavior);
+
+// Initializes Google Mock.  This must be called before running the
+// tests.  In particular, it parses the command line for the flags
+// that Google Mock recognizes.  Whenever a Google Mock flag is seen,
+// it is removed from argv, and *argc is decremented.
+//
+// No value is returned.  Instead, the Google Mock flag variables are
+// updated.
+//
+// Since Google Test is needed for Google Mock to work, this function
+// also initializes Google Test and parses its flags, if that hasn't
+// been done.
+GTEST_API_ void InitGoogleMock(int* argc, char** argv);
+
+// This overloaded version can be used in Windows programs compiled in
+// UNICODE mode.
+GTEST_API_ void InitGoogleMock(int* argc, wchar_t** argv);
+
+// This overloaded version can be used on Arduino/embedded platforms where
+// there is no argc/argv.
+GTEST_API_ void InitGoogleMock();
+
+}  // namespace testing
+
+#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/README.md b/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..f6c93f616d62414bc599efa06cd76742eb9977b8
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/README.md
@@ -0,0 +1,16 @@
+# Customization Points
+
+The custom directory is an injection point for custom user configurations.
+
+## Header `gmock-port.h`
+
+The following macros can be defined:
+
+### Flag related macros:
+
+*   `GMOCK_DECLARE_bool_(name)`
+*   `GMOCK_DECLARE_int32_(name)`
+*   `GMOCK_DECLARE_string_(name)`
+*   `GMOCK_DEFINE_bool_(name, default_val, doc)`
+*   `GMOCK_DEFINE_int32_(name, default_val, doc)`
+*   `GMOCK_DEFINE_string_(name, default_val, doc)`
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/gmock-generated-actions.h b/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/gmock-generated-actions.h
new file mode 100644
index 0000000000000000000000000000000000000000..92d910cf06dfe16293a77fb4dc294360ae29505f
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/gmock-generated-actions.h
@@ -0,0 +1,10 @@
+// This file was GENERATED by command:
+//     pump.py gmock-generated-actions.h.pump
+// DO NOT EDIT BY HAND!!!
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_GENERATED_ACTIONS_H_
+#define GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_GENERATED_ACTIONS_H_
+
+#endif  // GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_GENERATED_ACTIONS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/gmock-generated-actions.h.pump b/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/gmock-generated-actions.h.pump
new file mode 100644
index 0000000000000000000000000000000000000000..67c221f14c72f56cdcf74e1c4eb1946cfa43c95e
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/gmock-generated-actions.h.pump
@@ -0,0 +1,12 @@
+$$ -*- mode: c++; -*-
+$$ This is a Pump source file. Please use Pump to convert
+$$ it to callback-actions.h.
+$$
+$var max_callback_arity = 5
+$$}} This meta comment fixes auto-indentation in editors.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_GENERATED_ACTIONS_H_
+#define GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_GENERATED_ACTIONS_H_
+
+#endif  // GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_GENERATED_ACTIONS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/gmock-matchers.h b/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/gmock-matchers.h
new file mode 100644
index 0000000000000000000000000000000000000000..14aafaabe6b5202bfcb25f6a4a2f76b11b3adddd
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/gmock-matchers.h
@@ -0,0 +1,36 @@
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Injection point for custom user configurations. See README for details
+//
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_MATCHERS_H_
+#define GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_MATCHERS_H_
+#endif  // GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_MATCHERS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/gmock-port.h b/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/gmock-port.h
new file mode 100644
index 0000000000000000000000000000000000000000..0030fe91118a5b398943606033cc5431331e33d8
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/internal/custom/gmock-port.h
@@ -0,0 +1,39 @@
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Injection point for custom user configurations. See README for details
+//
+// ** Custom implementation starts here **
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_PORT_H_
+#define GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_PORT_H_
+
+#endif  // GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_PORT_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/internal/gmock-internal-utils.h b/build/_deps/googletest-src/googlemock/include/gmock/internal/gmock-internal-utils.h
new file mode 100644
index 0000000000000000000000000000000000000000..fdc049c589cb9865c0cac8221693dcd3092b2d95
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/internal/gmock-internal-utils.h
@@ -0,0 +1,513 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file defines some utilities useful for implementing Google
+// Mock.  They are subject to change without notice, so please DO NOT
+// USE THEM IN USER CODE.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_INTERNAL_UTILS_H_
+#define GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_INTERNAL_UTILS_H_
+
+#include <stdio.h>
+#include <ostream>  // NOLINT
+#include <string>
+#include <type_traits>
+#include "gmock/internal/gmock-port.h"
+#include "gtest/gtest.h"
+
+namespace testing {
+
+template <typename>
+class Matcher;
+
+namespace internal {
+
+// Silence MSVC C4100 (unreferenced formal parameter) and
+// C4805('==': unsafe mix of type 'const int' and type 'const bool')
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
+# pragma warning(disable:4805)
+#endif
+
+// Joins a vector of strings as if they are fields of a tuple; returns
+// the joined string.
+GTEST_API_ std::string JoinAsTuple(const Strings& fields);
+
+// Converts an identifier name to a space-separated list of lower-case
+// words.  Each maximum substring of the form [A-Za-z][a-z]*|\d+ is
+// treated as one word.  For example, both "FooBar123" and
+// "foo_bar_123" are converted to "foo bar 123".
+GTEST_API_ std::string ConvertIdentifierNameToWords(const char* id_name);
+
+// PointeeOf<Pointer>::type is the type of a value pointed to by a
+// Pointer, which can be either a smart pointer or a raw pointer.  The
+// following default implementation is for the case where Pointer is a
+// smart pointer.
+template <typename Pointer>
+struct PointeeOf {
+  // Smart pointer classes define type element_type as the type of
+  // their pointees.
+  typedef typename Pointer::element_type type;
+};
+// This specialization is for the raw pointer case.
+template <typename T>
+struct PointeeOf<T*> { typedef T type; };  // NOLINT
+
+// GetRawPointer(p) returns the raw pointer underlying p when p is a
+// smart pointer, or returns p itself when p is already a raw pointer.
+// The following default implementation is for the smart pointer case.
+template <typename Pointer>
+inline const typename Pointer::element_type* GetRawPointer(const Pointer& p) {
+  return p.get();
+}
+// This overloaded version is for the raw pointer case.
+template <typename Element>
+inline Element* GetRawPointer(Element* p) { return p; }
+
+// MSVC treats wchar_t as a native type usually, but treats it as the
+// same as unsigned short when the compiler option /Zc:wchar_t- is
+// specified.  It defines _NATIVE_WCHAR_T_DEFINED symbol when wchar_t
+// is a native type.
+#if defined(_MSC_VER) && !defined(_NATIVE_WCHAR_T_DEFINED)
+// wchar_t is a typedef.
+#else
+# define GMOCK_WCHAR_T_IS_NATIVE_ 1
+#endif
+
+// In what follows, we use the term "kind" to indicate whether a type
+// is bool, an integer type (excluding bool), a floating-point type,
+// or none of them.  This categorization is useful for determining
+// when a matcher argument type can be safely converted to another
+// type in the implementation of SafeMatcherCast.
+enum TypeKind {
+  kBool, kInteger, kFloatingPoint, kOther
+};
+
+// KindOf<T>::value is the kind of type T.
+template <typename T> struct KindOf {
+  enum { value = kOther };  // The default kind.
+};
+
+// This macro declares that the kind of 'type' is 'kind'.
+#define GMOCK_DECLARE_KIND_(type, kind) \
+  template <> struct KindOf<type> { enum { value = kind }; }
+
+GMOCK_DECLARE_KIND_(bool, kBool);
+
+// All standard integer types.
+GMOCK_DECLARE_KIND_(char, kInteger);
+GMOCK_DECLARE_KIND_(signed char, kInteger);
+GMOCK_DECLARE_KIND_(unsigned char, kInteger);
+GMOCK_DECLARE_KIND_(short, kInteger);  // NOLINT
+GMOCK_DECLARE_KIND_(unsigned short, kInteger);  // NOLINT
+GMOCK_DECLARE_KIND_(int, kInteger);
+GMOCK_DECLARE_KIND_(unsigned int, kInteger);
+GMOCK_DECLARE_KIND_(long, kInteger);  // NOLINT
+GMOCK_DECLARE_KIND_(unsigned long, kInteger);  // NOLINT
+
+#if GMOCK_WCHAR_T_IS_NATIVE_
+GMOCK_DECLARE_KIND_(wchar_t, kInteger);
+#endif
+
+// Non-standard integer types.
+GMOCK_DECLARE_KIND_(Int64, kInteger);
+GMOCK_DECLARE_KIND_(UInt64, kInteger);
+
+// All standard floating-point types.
+GMOCK_DECLARE_KIND_(float, kFloatingPoint);
+GMOCK_DECLARE_KIND_(double, kFloatingPoint);
+GMOCK_DECLARE_KIND_(long double, kFloatingPoint);
+
+#undef GMOCK_DECLARE_KIND_
+
+// Evaluates to the kind of 'type'.
+#define GMOCK_KIND_OF_(type) \
+  static_cast< ::testing::internal::TypeKind>( \
+      ::testing::internal::KindOf<type>::value)
+
+// Evaluates to true if and only if integer type T is signed.
+#define GMOCK_IS_SIGNED_(T) (static_cast<T>(-1) < 0)
+
+// LosslessArithmeticConvertibleImpl<kFromKind, From, kToKind, To>::value
+// is true if and only if arithmetic type From can be losslessly converted to
+// arithmetic type To.
+//
+// It's the user's responsibility to ensure that both From and To are
+// raw (i.e. has no CV modifier, is not a pointer, and is not a
+// reference) built-in arithmetic types, kFromKind is the kind of
+// From, and kToKind is the kind of To; the value is
+// implementation-defined when the above pre-condition is violated.
+template <TypeKind kFromKind, typename From, TypeKind kToKind, typename To>
+struct LosslessArithmeticConvertibleImpl : public std::false_type {};
+
+// Converting bool to bool is lossless.
+template <>
+struct LosslessArithmeticConvertibleImpl<kBool, bool, kBool, bool>
+    : public std::true_type {};
+
+// Converting bool to any integer type is lossless.
+template <typename To>
+struct LosslessArithmeticConvertibleImpl<kBool, bool, kInteger, To>
+    : public std::true_type {};
+
+// Converting bool to any floating-point type is lossless.
+template <typename To>
+struct LosslessArithmeticConvertibleImpl<kBool, bool, kFloatingPoint, To>
+    : public std::true_type {};
+
+// Converting an integer to bool is lossy.
+template <typename From>
+struct LosslessArithmeticConvertibleImpl<kInteger, From, kBool, bool>
+    : public std::false_type {};
+
+// Converting an integer to another non-bool integer is lossless
+// if and only if the target type's range encloses the source type's range.
+template <typename From, typename To>
+struct LosslessArithmeticConvertibleImpl<kInteger, From, kInteger, To>
+    : public bool_constant<
+      // When converting from a smaller size to a larger size, we are
+      // fine as long as we are not converting from signed to unsigned.
+      ((sizeof(From) < sizeof(To)) &&
+       (!GMOCK_IS_SIGNED_(From) || GMOCK_IS_SIGNED_(To))) ||
+      // When converting between the same size, the signedness must match.
+      ((sizeof(From) == sizeof(To)) &&
+       (GMOCK_IS_SIGNED_(From) == GMOCK_IS_SIGNED_(To)))> {};  // NOLINT
+
+#undef GMOCK_IS_SIGNED_
+
+// Converting an integer to a floating-point type may be lossy, since
+// the format of a floating-point number is implementation-defined.
+template <typename From, typename To>
+struct LosslessArithmeticConvertibleImpl<kInteger, From, kFloatingPoint, To>
+    : public std::false_type {};
+
+// Converting a floating-point to bool is lossy.
+template <typename From>
+struct LosslessArithmeticConvertibleImpl<kFloatingPoint, From, kBool, bool>
+    : public std::false_type {};
+
+// Converting a floating-point to an integer is lossy.
+template <typename From, typename To>
+struct LosslessArithmeticConvertibleImpl<kFloatingPoint, From, kInteger, To>
+    : public std::false_type {};
+
+// Converting a floating-point to another floating-point is lossless
+// if and only if the target type is at least as big as the source type.
+template <typename From, typename To>
+struct LosslessArithmeticConvertibleImpl<
+  kFloatingPoint, From, kFloatingPoint, To>
+    : public bool_constant<sizeof(From) <= sizeof(To)> {};  // NOLINT
+
+// LosslessArithmeticConvertible<From, To>::value is true if and only if
+// arithmetic type From can be losslessly converted to arithmetic type To.
+//
+// It's the user's responsibility to ensure that both From and To are
+// raw (i.e. has no CV modifier, is not a pointer, and is not a
+// reference) built-in arithmetic types; the value is
+// implementation-defined when the above pre-condition is violated.
+template <typename From, typename To>
+struct LosslessArithmeticConvertible
+    : public LosslessArithmeticConvertibleImpl<
+  GMOCK_KIND_OF_(From), From, GMOCK_KIND_OF_(To), To> {};  // NOLINT
+
+// This interface knows how to report a Google Mock failure (either
+// non-fatal or fatal).
+class FailureReporterInterface {
+ public:
+  // The type of a failure (either non-fatal or fatal).
+  enum FailureType {
+    kNonfatal, kFatal
+  };
+
+  virtual ~FailureReporterInterface() {}
+
+  // Reports a failure that occurred at the given source file location.
+  virtual void ReportFailure(FailureType type, const char* file, int line,
+                             const std::string& message) = 0;
+};
+
+// Returns the failure reporter used by Google Mock.
+GTEST_API_ FailureReporterInterface* GetFailureReporter();
+
+// Asserts that condition is true; aborts the process with the given
+// message if condition is false.  We cannot use LOG(FATAL) or CHECK()
+// as Google Mock might be used to mock the log sink itself.  We
+// inline this function to prevent it from showing up in the stack
+// trace.
+inline void Assert(bool condition, const char* file, int line,
+                   const std::string& msg) {
+  if (!condition) {
+    GetFailureReporter()->ReportFailure(FailureReporterInterface::kFatal,
+                                        file, line, msg);
+  }
+}
+inline void Assert(bool condition, const char* file, int line) {
+  Assert(condition, file, line, "Assertion failed.");
+}
+
+// Verifies that condition is true; generates a non-fatal failure if
+// condition is false.
+inline void Expect(bool condition, const char* file, int line,
+                   const std::string& msg) {
+  if (!condition) {
+    GetFailureReporter()->ReportFailure(FailureReporterInterface::kNonfatal,
+                                        file, line, msg);
+  }
+}
+inline void Expect(bool condition, const char* file, int line) {
+  Expect(condition, file, line, "Expectation failed.");
+}
+
+// Severity level of a log.
+enum LogSeverity {
+  kInfo = 0,
+  kWarning = 1
+};
+
+// Valid values for the --gmock_verbose flag.
+
+// All logs (informational and warnings) are printed.
+const char kInfoVerbosity[] = "info";
+// Only warnings are printed.
+const char kWarningVerbosity[] = "warning";
+// No logs are printed.
+const char kErrorVerbosity[] = "error";
+
+// Returns true if and only if a log with the given severity is visible
+// according to the --gmock_verbose flag.
+GTEST_API_ bool LogIsVisible(LogSeverity severity);
+
+// Prints the given message to stdout if and only if 'severity' >= the level
+// specified by the --gmock_verbose flag.  If stack_frames_to_skip >=
+// 0, also prints the stack trace excluding the top
+// stack_frames_to_skip frames.  In opt mode, any positive
+// stack_frames_to_skip is treated as 0, since we don't know which
+// function calls will be inlined by the compiler and need to be
+// conservative.
+GTEST_API_ void Log(LogSeverity severity, const std::string& message,
+                    int stack_frames_to_skip);
+
+// A marker class that is used to resolve parameterless expectations to the
+// correct overload. This must not be instantiable, to prevent client code from
+// accidentally resolving to the overload; for example:
+//
+//    ON_CALL(mock, Method({}, nullptr))...
+//
+class WithoutMatchers {
+ private:
+  WithoutMatchers() {}
+  friend GTEST_API_ WithoutMatchers GetWithoutMatchers();
+};
+
+// Internal use only: access the singleton instance of WithoutMatchers.
+GTEST_API_ WithoutMatchers GetWithoutMatchers();
+
+// Type traits.
+
+// Disable MSVC warnings for infinite recursion, since in this case the
+// the recursion is unreachable.
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4717)
+#endif
+
+// Invalid<T>() is usable as an expression of type T, but will terminate
+// the program with an assertion failure if actually run.  This is useful
+// when a value of type T is needed for compilation, but the statement
+// will not really be executed (or we don't care if the statement
+// crashes).
+template <typename T>
+inline T Invalid() {
+  Assert(false, "", -1, "Internal error: attempt to return invalid value");
+  // This statement is unreachable, and would never terminate even if it
+  // could be reached. It is provided only to placate compiler warnings
+  // about missing return statements.
+  return Invalid<T>();
+}
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+// Given a raw type (i.e. having no top-level reference or const
+// modifier) RawContainer that's either an STL-style container or a
+// native array, class StlContainerView<RawContainer> has the
+// following members:
+//
+//   - type is a type that provides an STL-style container view to
+//     (i.e. implements the STL container concept for) RawContainer;
+//   - const_reference is a type that provides a reference to a const
+//     RawContainer;
+//   - ConstReference(raw_container) returns a const reference to an STL-style
+//     container view to raw_container, which is a RawContainer.
+//   - Copy(raw_container) returns an STL-style container view of a
+//     copy of raw_container, which is a RawContainer.
+//
+// This generic version is used when RawContainer itself is already an
+// STL-style container.
+template <class RawContainer>
+class StlContainerView {
+ public:
+  typedef RawContainer type;
+  typedef const type& const_reference;
+
+  static const_reference ConstReference(const RawContainer& container) {
+    static_assert(!std::is_const<RawContainer>::value,
+                  "RawContainer type must not be const");
+    return container;
+  }
+  static type Copy(const RawContainer& container) { return container; }
+};
+
+// This specialization is used when RawContainer is a native array type.
+template <typename Element, size_t N>
+class StlContainerView<Element[N]> {
+ public:
+  typedef typename std::remove_const<Element>::type RawElement;
+  typedef internal::NativeArray<RawElement> type;
+  // NativeArray<T> can represent a native array either by value or by
+  // reference (selected by a constructor argument), so 'const type'
+  // can be used to reference a const native array.  We cannot
+  // 'typedef const type& const_reference' here, as that would mean
+  // ConstReference() has to return a reference to a local variable.
+  typedef const type const_reference;
+
+  static const_reference ConstReference(const Element (&array)[N]) {
+    static_assert(std::is_same<Element, RawElement>::value,
+                  "Element type must not be const");
+    return type(array, N, RelationToSourceReference());
+  }
+  static type Copy(const Element (&array)[N]) {
+    return type(array, N, RelationToSourceCopy());
+  }
+};
+
+// This specialization is used when RawContainer is a native array
+// represented as a (pointer, size) tuple.
+template <typename ElementPointer, typename Size>
+class StlContainerView< ::std::tuple<ElementPointer, Size> > {
+ public:
+  typedef typename std::remove_const<
+      typename internal::PointeeOf<ElementPointer>::type>::type RawElement;
+  typedef internal::NativeArray<RawElement> type;
+  typedef const type const_reference;
+
+  static const_reference ConstReference(
+      const ::std::tuple<ElementPointer, Size>& array) {
+    return type(std::get<0>(array), std::get<1>(array),
+                RelationToSourceReference());
+  }
+  static type Copy(const ::std::tuple<ElementPointer, Size>& array) {
+    return type(std::get<0>(array), std::get<1>(array), RelationToSourceCopy());
+  }
+};
+
+// The following specialization prevents the user from instantiating
+// StlContainer with a reference type.
+template <typename T> class StlContainerView<T&>;
+
+// A type transform to remove constness from the first part of a pair.
+// Pairs like that are used as the value_type of associative containers,
+// and this transform produces a similar but assignable pair.
+template <typename T>
+struct RemoveConstFromKey {
+  typedef T type;
+};
+
+// Partially specialized to remove constness from std::pair<const K, V>.
+template <typename K, typename V>
+struct RemoveConstFromKey<std::pair<const K, V> > {
+  typedef std::pair<K, V> type;
+};
+
+// Emit an assertion failure due to incorrect DoDefault() usage. Out-of-lined to
+// reduce code size.
+GTEST_API_ void IllegalDoDefault(const char* file, int line);
+
+template <typename F, typename Tuple, size_t... Idx>
+auto ApplyImpl(F&& f, Tuple&& args, IndexSequence<Idx...>) -> decltype(
+    std::forward<F>(f)(std::get<Idx>(std::forward<Tuple>(args))...)) {
+  return std::forward<F>(f)(std::get<Idx>(std::forward<Tuple>(args))...);
+}
+
+// Apply the function to a tuple of arguments.
+template <typename F, typename Tuple>
+auto Apply(F&& f, Tuple&& args)
+    -> decltype(ApplyImpl(std::forward<F>(f), std::forward<Tuple>(args),
+                          MakeIndexSequence<std::tuple_size<Tuple>::value>())) {
+  return ApplyImpl(std::forward<F>(f), std::forward<Tuple>(args),
+                   MakeIndexSequence<std::tuple_size<Tuple>::value>());
+}
+
+// Template struct Function<F>, where F must be a function type, contains
+// the following typedefs:
+//
+//   Result:               the function's return type.
+//   Arg<N>:               the type of the N-th argument, where N starts with 0.
+//   ArgumentTuple:        the tuple type consisting of all parameters of F.
+//   ArgumentMatcherTuple: the tuple type consisting of Matchers for all
+//                         parameters of F.
+//   MakeResultVoid:       the function type obtained by substituting void
+//                         for the return type of F.
+//   MakeResultIgnoredValue:
+//                         the function type obtained by substituting Something
+//                         for the return type of F.
+template <typename T>
+struct Function;
+
+template <typename R, typename... Args>
+struct Function<R(Args...)> {
+  using Result = R;
+  static constexpr size_t ArgumentCount = sizeof...(Args);
+  template <size_t I>
+  using Arg = ElemFromList<I, typename MakeIndexSequence<sizeof...(Args)>::type,
+                           Args...>;
+  using ArgumentTuple = std::tuple<Args...>;
+  using ArgumentMatcherTuple = std::tuple<Matcher<Args>...>;
+  using MakeResultVoid = void(Args...);
+  using MakeResultIgnoredValue = IgnoredValue(Args...);
+};
+
+template <typename R, typename... Args>
+constexpr size_t Function<R(Args...)>::ArgumentCount;
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+}  // namespace internal
+}  // namespace testing
+
+#endif  // GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_INTERNAL_UTILS_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/internal/gmock-port.h b/build/_deps/googletest-src/googlemock/include/gmock/internal/gmock-port.h
new file mode 100644
index 0000000000000000000000000000000000000000..063e2929acd59790635e55687c3ae4f8ed6b0811
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/internal/gmock-port.h
@@ -0,0 +1,87 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Low-level types and utilities for porting Google Mock to various
+// platforms.  All macros ending with _ and symbols defined in an
+// internal namespace are subject to change without notice.  Code
+// outside Google Mock MUST NOT USE THEM DIRECTLY.  Macros that don't
+// end with _ are part of Google Mock's public API and can be used by
+// code outside Google Mock.
+
+// GOOGLETEST_CM0002 DO NOT DELETE
+
+#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_PORT_H_
+#define GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_PORT_H_
+
+#include <assert.h>
+#include <stdlib.h>
+#include <iostream>
+
+// Most of the utilities needed for porting Google Mock are also
+// required for Google Test and are defined in gtest-port.h.
+//
+// Note to maintainers: to reduce code duplication, prefer adding
+// portability utilities to Google Test's gtest-port.h instead of
+// here, as Google Mock depends on Google Test.  Only add a utility
+// here if it's truly specific to Google Mock.
+
+#include "gtest/internal/gtest-port.h"
+#include "gmock/internal/custom/gmock-port.h"
+
+// For MS Visual C++, check the compiler version. At least VS 2015 is
+// required to compile Google Mock.
+#if defined(_MSC_VER) && _MSC_VER < 1900
+# error "At least Visual C++ 2015 (14.0) is required to compile Google Mock."
+#endif
+
+// Macro for referencing flags.  This is public as we want the user to
+// use this syntax to reference Google Mock flags.
+#define GMOCK_FLAG(name) FLAGS_gmock_##name
+
+#if !defined(GMOCK_DECLARE_bool_)
+
+// Macros for declaring flags.
+# define GMOCK_DECLARE_bool_(name) extern GTEST_API_ bool GMOCK_FLAG(name)
+# define GMOCK_DECLARE_int32_(name) \
+    extern GTEST_API_ ::testing::internal::Int32 GMOCK_FLAG(name)
+# define GMOCK_DECLARE_string_(name) \
+    extern GTEST_API_ ::std::string GMOCK_FLAG(name)
+
+// Macros for defining flags.
+# define GMOCK_DEFINE_bool_(name, default_val, doc) \
+    GTEST_API_ bool GMOCK_FLAG(name) = (default_val)
+# define GMOCK_DEFINE_int32_(name, default_val, doc) \
+    GTEST_API_ ::testing::internal::Int32 GMOCK_FLAG(name) = (default_val)
+# define GMOCK_DEFINE_string_(name, default_val, doc) \
+    GTEST_API_ ::std::string GMOCK_FLAG(name) = (default_val)
+
+#endif  // !defined(GMOCK_DECLARE_bool_)
+
+#endif  // GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_PORT_H_
diff --git a/build/_deps/googletest-src/googlemock/include/gmock/internal/gmock-pp.h b/build/_deps/googletest-src/googlemock/include/gmock/internal/gmock-pp.h
new file mode 100644
index 0000000000000000000000000000000000000000..1ab80e1cdbee686c4b1f29061c01e2ec57a23e21
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/include/gmock/internal/gmock-pp.h
@@ -0,0 +1,317 @@
+#ifndef THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_PP_H_
+#define THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_PP_H_
+
+#undef GMOCK_PP_INTERNAL_USE_MSVC
+#if defined(__clang__)
+#define GMOCK_PP_INTERNAL_USE_MSVC 0
+#elif defined(_MSC_VER)
+// TODO(iserna): Also verify tradional versus comformant preprocessor.
+static_assert(
+    _MSC_VER >= 1900,
+    "MSVC version not supported. There is support for MSVC 14.0 and above.");
+#define GMOCK_PP_INTERNAL_USE_MSVC 1
+#else
+#define GMOCK_PP_INTERNAL_USE_MSVC 0
+#endif
+
+// Expands and concatenates the arguments. Constructed macros reevaluate.
+#define GMOCK_PP_CAT(_1, _2) GMOCK_PP_INTERNAL_CAT(_1, _2)
+
+// Expands and stringifies the only argument.
+#define GMOCK_PP_STRINGIZE(...) GMOCK_PP_INTERNAL_STRINGIZE(__VA_ARGS__)
+
+// Returns empty. Given a variadic number of arguments.
+#define GMOCK_PP_EMPTY(...)
+
+// Returns a comma. Given a variadic number of arguments.
+#define GMOCK_PP_COMMA(...) ,
+
+// Returns the only argument.
+#define GMOCK_PP_IDENTITY(_1) _1
+
+// MSVC preprocessor collapses __VA_ARGS__ in a single argument, we use a
+// CAT-like directive to force correct evaluation. Each macro has its own.
+#if GMOCK_PP_INTERNAL_USE_MSVC
+
+// Evaluates to the number of arguments after expansion.
+//
+//   #define PAIR x, y
+//
+//   GMOCK_PP_NARG() => 1
+//   GMOCK_PP_NARG(x) => 1
+//   GMOCK_PP_NARG(x, y) => 2
+//   GMOCK_PP_NARG(PAIR) => 2
+//
+// Requires: the number of arguments after expansion is at most 15.
+#define GMOCK_PP_NARG(...)                                                    \
+  GMOCK_PP_INTERNAL_NARG_CAT(                                                 \
+      GMOCK_PP_INTERNAL_INTERNAL_16TH(__VA_ARGS__, 15, 14, 13, 12, 11, 10, 9, \
+                                      8, 7, 6, 5, 4, 3, 2, 1), )
+
+// Returns 1 if the expansion of arguments has an unprotected comma. Otherwise
+// returns 0. Requires no more than 15 unprotected commas.
+#define GMOCK_PP_HAS_COMMA(...)                                               \
+  GMOCK_PP_INTERNAL_HAS_COMMA_CAT(                                            \
+      GMOCK_PP_INTERNAL_INTERNAL_16TH(__VA_ARGS__, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
+                                      1, 1, 1, 1, 1, 0), )
+// Returns the first argument.
+#define GMOCK_PP_HEAD(...) \
+  GMOCK_PP_INTERNAL_HEAD_CAT(GMOCK_PP_INTERNAL_HEAD(__VA_ARGS__), )
+
+// Returns the tail. A variadic list of all arguments minus the first. Requires
+// at least one argument.
+#define GMOCK_PP_TAIL(...) \
+  GMOCK_PP_INTERNAL_TAIL_CAT(GMOCK_PP_INTERNAL_TAIL(__VA_ARGS__), )
+
+// Calls CAT(_Macro, NARG(__VA_ARGS__))(__VA_ARGS__)
+#define GMOCK_PP_VARIADIC_CALL(_Macro, ...) \
+  GMOCK_PP_INTERNAL_VARIADIC_CALL_CAT(      \
+      GMOCK_PP_CAT(_Macro, GMOCK_PP_NARG(__VA_ARGS__))(__VA_ARGS__), )
+
+#else  // GMOCK_PP_INTERNAL_USE_MSVC
+
+#define GMOCK_PP_NARG(...)                                                   \
+  GMOCK_PP_INTERNAL_INTERNAL_16TH(__VA_ARGS__, 15, 14, 13, 12, 11, 10, 9, 8, \
+                                  7, 6, 5, 4, 3, 2, 1)
+#define GMOCK_PP_HAS_COMMA(...)                                              \
+  GMOCK_PP_INTERNAL_INTERNAL_16TH(__VA_ARGS__, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
+                                  1, 1, 1, 1, 0)
+#define GMOCK_PP_HEAD(...) GMOCK_PP_INTERNAL_HEAD(__VA_ARGS__)
+#define GMOCK_PP_TAIL(...) GMOCK_PP_INTERNAL_TAIL(__VA_ARGS__)
+#define GMOCK_PP_VARIADIC_CALL(_Macro, ...) \
+  GMOCK_PP_CAT(_Macro, GMOCK_PP_NARG(__VA_ARGS__))(__VA_ARGS__)
+
+#endif  // GMOCK_PP_INTERNAL_USE_MSVC
+
+// If the arguments after expansion have no tokens, evaluates to `1`. Otherwise
+// evaluates to `0`.
+//
+// Requires: * the number of arguments after expansion is at most 15.
+//           * If the argument is a macro, it must be able to be called with one
+//             argument.
+//
+// Implementation details:
+//
+// There is one case when it generates a compile error: if the argument is macro
+// that cannot be called with one argument.
+//
+//   #define M(a, b)  // it doesn't matter what it expands to
+//
+//   // Expected: expands to `0`.
+//   // Actual: compile error.
+//   GMOCK_PP_IS_EMPTY(M)
+//
+// There are 4 cases tested:
+//
+// * __VA_ARGS__ possible expansion has no unparen'd commas. Expected 0.
+// * __VA_ARGS__ possible expansion is not enclosed in parenthesis. Expected 0.
+// * __VA_ARGS__ possible expansion is not a macro that ()-evaluates to a comma.
+//   Expected 0
+// * __VA_ARGS__ is empty, or has unparen'd commas, or is enclosed in
+//   parenthesis, or is a macro that ()-evaluates to comma. Expected 1.
+//
+// We trigger detection on '0001', i.e. on empty.
+#define GMOCK_PP_IS_EMPTY(...)                                               \
+  GMOCK_PP_INTERNAL_IS_EMPTY(GMOCK_PP_HAS_COMMA(__VA_ARGS__),                \
+                             GMOCK_PP_HAS_COMMA(GMOCK_PP_COMMA __VA_ARGS__), \
+                             GMOCK_PP_HAS_COMMA(__VA_ARGS__()),              \
+                             GMOCK_PP_HAS_COMMA(GMOCK_PP_COMMA __VA_ARGS__()))
+
+// Evaluates to _Then if _Cond is 1 and _Else if _Cond is 0.
+#define GMOCK_PP_IF(_Cond, _Then, _Else) \
+  GMOCK_PP_CAT(GMOCK_PP_INTERNAL_IF_, _Cond)(_Then, _Else)
+
+// Evaluates to the number of arguments after expansion. Identifies 'empty' as
+// 0.
+//
+//   #define PAIR x, y
+//
+//   GMOCK_PP_NARG0() => 0
+//   GMOCK_PP_NARG0(x) => 1
+//   GMOCK_PP_NARG0(x, y) => 2
+//   GMOCK_PP_NARG0(PAIR) => 2
+//
+// Requires: * the number of arguments after expansion is at most 15.
+//           * If the argument is a macro, it must be able to be called with one
+//             argument.
+#define GMOCK_PP_NARG0(...) \
+  GMOCK_PP_IF(GMOCK_PP_IS_EMPTY(__VA_ARGS__), 0, GMOCK_PP_NARG(__VA_ARGS__))
+
+// Expands to 1 if the first argument starts with something in parentheses,
+// otherwise to 0.
+#define GMOCK_PP_IS_BEGIN_PARENS(...)                    \
+  GMOCK_PP_INTERNAL_ALTERNATE_HEAD(                      \
+      GMOCK_PP_CAT(GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_R_, \
+                   GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_C __VA_ARGS__))
+
+// Expands to 1 is there is only one argument and it is enclosed in parentheses.
+#define GMOCK_PP_IS_ENCLOSED_PARENS(...)             \
+  GMOCK_PP_IF(GMOCK_PP_IS_BEGIN_PARENS(__VA_ARGS__), \
+              GMOCK_PP_IS_EMPTY(GMOCK_PP_EMPTY __VA_ARGS__), 0)
+
+// Remove the parens, requires GMOCK_PP_IS_ENCLOSED_PARENS(args) => 1.
+#define GMOCK_PP_REMOVE_PARENS(...) GMOCK_PP_INTERNAL_REMOVE_PARENS __VA_ARGS__
+
+// Expands to _Macro(0, _Data, e1) _Macro(1, _Data, e2) ... _Macro(K -1, _Data,
+// eK) as many of GMOCK_INTERNAL_NARG0 _Tuple.
+// Requires: * |_Macro| can be called with 3 arguments.
+//           * |_Tuple| expansion has no more than 15 elements.
+#define GMOCK_PP_FOR_EACH(_Macro, _Data, _Tuple)                        \
+  GMOCK_PP_CAT(GMOCK_PP_INTERNAL_FOR_EACH_IMPL_, GMOCK_PP_NARG0 _Tuple) \
+  (0, _Macro, _Data, _Tuple)
+
+// Expands to _Macro(0, _Data, ) _Macro(1, _Data, ) ... _Macro(K - 1, _Data, )
+// Empty if _K = 0.
+// Requires: * |_Macro| can be called with 3 arguments.
+//           * |_K| literal between 0 and 15
+#define GMOCK_PP_REPEAT(_Macro, _Data, _N)           \
+  GMOCK_PP_CAT(GMOCK_PP_INTERNAL_FOR_EACH_IMPL_, _N) \
+  (0, _Macro, _Data, GMOCK_PP_INTENRAL_EMPTY_TUPLE)
+
+// Increments the argument, requires the argument to be between 0 and 15.
+#define GMOCK_PP_INC(_i) GMOCK_PP_CAT(GMOCK_PP_INTERNAL_INC_, _i)
+
+// Returns comma if _i != 0. Requires _i to be between 0 and 15.
+#define GMOCK_PP_COMMA_IF(_i) GMOCK_PP_CAT(GMOCK_PP_INTERNAL_COMMA_IF_, _i)
+
+// Internal details follow. Do not use any of these symbols outside of this
+// file or we will break your code.
+#define GMOCK_PP_INTENRAL_EMPTY_TUPLE (, , , , , , , , , , , , , , , )
+#define GMOCK_PP_INTERNAL_CAT(_1, _2) _1##_2
+#define GMOCK_PP_INTERNAL_STRINGIZE(...) #__VA_ARGS__
+#define GMOCK_PP_INTERNAL_INTERNAL_16TH(_1, _2, _3, _4, _5, _6, _7, _8, _9, \
+                                        _10, _11, _12, _13, _14, _15, _16,  \
+                                        ...)                                \
+  _16
+#define GMOCK_PP_INTERNAL_CAT_5(_1, _2, _3, _4, _5) _1##_2##_3##_4##_5
+#define GMOCK_PP_INTERNAL_IS_EMPTY(_1, _2, _3, _4)                             \
+  GMOCK_PP_HAS_COMMA(GMOCK_PP_INTERNAL_CAT_5(GMOCK_PP_INTERNAL_IS_EMPTY_CASE_, \
+                                             _1, _2, _3, _4))
+#define GMOCK_PP_INTERNAL_IS_EMPTY_CASE_0001 ,
+#define GMOCK_PP_INTERNAL_IF_1(_Then, _Else) _Then
+#define GMOCK_PP_INTERNAL_IF_0(_Then, _Else) _Else
+#define GMOCK_PP_INTERNAL_HEAD(_1, ...) _1
+#define GMOCK_PP_INTERNAL_TAIL(_1, ...) __VA_ARGS__
+
+#if GMOCK_PP_INTERNAL_USE_MSVC
+#define GMOCK_PP_INTERNAL_NARG_CAT(_1, _2) GMOCK_PP_INTERNAL_NARG_CAT_I(_1, _2)
+#define GMOCK_PP_INTERNAL_HEAD_CAT(_1, _2) GMOCK_PP_INTERNAL_HEAD_CAT_I(_1, _2)
+#define GMOCK_PP_INTERNAL_HAS_COMMA_CAT(_1, _2) \
+  GMOCK_PP_INTERNAL_HAS_COMMA_CAT_I(_1, _2)
+#define GMOCK_PP_INTERNAL_TAIL_CAT(_1, _2) GMOCK_PP_INTERNAL_TAIL_CAT_I(_1, _2)
+#define GMOCK_PP_INTERNAL_VARIADIC_CALL_CAT(_1, _2) \
+  GMOCK_PP_INTERNAL_VARIADIC_CALL_CAT_I(_1, _2)
+#define GMOCK_PP_INTERNAL_NARG_CAT_I(_1, _2) _1##_2
+#define GMOCK_PP_INTERNAL_HEAD_CAT_I(_1, _2) _1##_2
+#define GMOCK_PP_INTERNAL_HAS_COMMA_CAT_I(_1, _2) _1##_2
+#define GMOCK_PP_INTERNAL_TAIL_CAT_I(_1, _2) _1##_2
+#define GMOCK_PP_INTERNAL_VARIADIC_CALL_CAT_I(_1, _2) _1##_2
+#define GMOCK_PP_INTERNAL_ALTERNATE_HEAD(...) \
+  GMOCK_PP_INTERNAL_ALTERNATE_HEAD_CAT(GMOCK_PP_HEAD(__VA_ARGS__), )
+#define GMOCK_PP_INTERNAL_ALTERNATE_HEAD_CAT(_1, _2) \
+  GMOCK_PP_INTERNAL_ALTERNATE_HEAD_CAT_I(_1, _2)
+#define GMOCK_PP_INTERNAL_ALTERNATE_HEAD_CAT_I(_1, _2) _1##_2
+#else  // GMOCK_PP_INTERNAL_USE_MSVC
+#define GMOCK_PP_INTERNAL_ALTERNATE_HEAD(...) GMOCK_PP_HEAD(__VA_ARGS__)
+#endif  // GMOCK_PP_INTERNAL_USE_MSVC
+
+#define GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_C(...) 1 _
+#define GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_R_1 1,
+#define GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_R_GMOCK_PP_INTERNAL_IBP_IS_VARIADIC_C \
+  0,
+#define GMOCK_PP_INTERNAL_REMOVE_PARENS(...) __VA_ARGS__
+#define GMOCK_PP_INTERNAL_INC_0 1
+#define GMOCK_PP_INTERNAL_INC_1 2
+#define GMOCK_PP_INTERNAL_INC_2 3
+#define GMOCK_PP_INTERNAL_INC_3 4
+#define GMOCK_PP_INTERNAL_INC_4 5
+#define GMOCK_PP_INTERNAL_INC_5 6
+#define GMOCK_PP_INTERNAL_INC_6 7
+#define GMOCK_PP_INTERNAL_INC_7 8
+#define GMOCK_PP_INTERNAL_INC_8 9
+#define GMOCK_PP_INTERNAL_INC_9 10
+#define GMOCK_PP_INTERNAL_INC_10 11
+#define GMOCK_PP_INTERNAL_INC_11 12
+#define GMOCK_PP_INTERNAL_INC_12 13
+#define GMOCK_PP_INTERNAL_INC_13 14
+#define GMOCK_PP_INTERNAL_INC_14 15
+#define GMOCK_PP_INTERNAL_INC_15 16
+#define GMOCK_PP_INTERNAL_COMMA_IF_0
+#define GMOCK_PP_INTERNAL_COMMA_IF_1 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_2 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_3 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_4 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_5 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_6 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_7 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_8 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_9 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_10 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_11 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_12 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_13 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_14 ,
+#define GMOCK_PP_INTERNAL_COMMA_IF_15 ,
+#define GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, _element) \
+  _Macro(_i, _Data, _element)
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_0(_i, _Macro, _Data, _Tuple)
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_1(_i, _Macro, _Data, _Tuple) \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple)
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_2(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_1(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_3(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_2(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_4(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_3(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_5(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_4(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_6(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_5(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_7(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_6(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_8(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_7(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_9(_i, _Macro, _Data, _Tuple)    \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_8(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_10(_i, _Macro, _Data, _Tuple)   \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_9(GMOCK_PP_INC(_i), _Macro, _Data,    \
+                                    (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_11(_i, _Macro, _Data, _Tuple)   \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_10(GMOCK_PP_INC(_i), _Macro, _Data,   \
+                                     (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_12(_i, _Macro, _Data, _Tuple)   \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_11(GMOCK_PP_INC(_i), _Macro, _Data,   \
+                                     (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_13(_i, _Macro, _Data, _Tuple)   \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_12(GMOCK_PP_INC(_i), _Macro, _Data,   \
+                                     (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_14(_i, _Macro, _Data, _Tuple)   \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_13(GMOCK_PP_INC(_i), _Macro, _Data,   \
+                                     (GMOCK_PP_TAIL _Tuple))
+#define GMOCK_PP_INTERNAL_FOR_EACH_IMPL_15(_i, _Macro, _Data, _Tuple)   \
+  GMOCK_PP_INTERNAL_CALL_MACRO(_Macro, _i, _Data, GMOCK_PP_HEAD _Tuple) \
+  GMOCK_PP_INTERNAL_FOR_EACH_IMPL_14(GMOCK_PP_INC(_i), _Macro, _Data,   \
+                                     (GMOCK_PP_TAIL _Tuple))
+
+#endif  // THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_PP_H_
diff --git a/build/_deps/googletest-src/googlemock/scripts/fuse_gmock_files.py b/build/_deps/googletest-src/googlemock/scripts/fuse_gmock_files.py
new file mode 100755
index 0000000000000000000000000000000000000000..c33c7253febf9e64b5a9d32c51e733ec3ef9730c
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/fuse_gmock_files.py
@@ -0,0 +1,240 @@
+#!/usr/bin/env python
+#
+# Copyright 2009, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""fuse_gmock_files.py v0.1.0
+Fuses Google Mock and Google Test source code into two .h files and a .cc file.
+
+SYNOPSIS
+       fuse_gmock_files.py [GMOCK_ROOT_DIR] OUTPUT_DIR
+
+       Scans GMOCK_ROOT_DIR for Google Mock and Google Test source
+       code, assuming Google Test is in the GMOCK_ROOT_DIR/../googletest
+       directory, and generates three files:
+       OUTPUT_DIR/gtest/gtest.h, OUTPUT_DIR/gmock/gmock.h, and
+       OUTPUT_DIR/gmock-gtest-all.cc.  Then you can build your tests
+       by adding OUTPUT_DIR to the include search path and linking
+       with OUTPUT_DIR/gmock-gtest-all.cc.  These three files contain
+       everything you need to use Google Mock.  Hence you can
+       "install" Google Mock by copying them to wherever you want.
+
+       GMOCK_ROOT_DIR can be omitted and defaults to the parent
+       directory of the directory holding this script.
+
+EXAMPLES
+       ./fuse_gmock_files.py fused_gmock
+       ./fuse_gmock_files.py path/to/unpacked/gmock fused_gmock
+
+This tool is experimental.  In particular, it assumes that there is no
+conditional inclusion of Google Mock or Google Test headers.  Please
+report any problems to googlemock@googlegroups.com.  You can read
+https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md for more
+information.
+"""
+
+__author__ = 'wan@google.com (Zhanyong Wan)'
+
+import os
+import re
+import sets
+import sys
+
+# We assume that this file is in the scripts/ directory in the Google
+# Mock root directory.
+DEFAULT_GMOCK_ROOT_DIR = os.path.join(os.path.dirname(__file__), '..')
+
+# We need to call into googletest/scripts/fuse_gtest_files.py.
+sys.path.append(os.path.join(DEFAULT_GMOCK_ROOT_DIR, '../googletest/scripts'))
+import fuse_gtest_files
+gtest = fuse_gtest_files
+
+# Regex for matching '#include "gmock/..."'.
+INCLUDE_GMOCK_FILE_REGEX = re.compile(r'^\s*#\s*include\s*"(gmock/.+)"')
+
+# Where to find the source seed files.
+GMOCK_H_SEED = 'include/gmock/gmock.h'
+GMOCK_ALL_CC_SEED = 'src/gmock-all.cc'
+
+# Where to put the generated files.
+GTEST_H_OUTPUT = 'gtest/gtest.h'
+GMOCK_H_OUTPUT = 'gmock/gmock.h'
+GMOCK_GTEST_ALL_CC_OUTPUT = 'gmock-gtest-all.cc'
+
+
+def GetGTestRootDir(gmock_root):
+  """Returns the root directory of Google Test."""
+
+  return os.path.join(gmock_root, '../googletest')
+
+
+def ValidateGMockRootDir(gmock_root):
+  """Makes sure gmock_root points to a valid gmock root directory.
+
+  The function aborts the program on failure.
+  """
+
+  gtest.ValidateGTestRootDir(GetGTestRootDir(gmock_root))
+  gtest.VerifyFileExists(gmock_root, GMOCK_H_SEED)
+  gtest.VerifyFileExists(gmock_root, GMOCK_ALL_CC_SEED)
+
+
+def ValidateOutputDir(output_dir):
+  """Makes sure output_dir points to a valid output directory.
+
+  The function aborts the program on failure.
+  """
+
+  gtest.VerifyOutputFile(output_dir, gtest.GTEST_H_OUTPUT)
+  gtest.VerifyOutputFile(output_dir, GMOCK_H_OUTPUT)
+  gtest.VerifyOutputFile(output_dir, GMOCK_GTEST_ALL_CC_OUTPUT)
+
+
+def FuseGMockH(gmock_root, output_dir):
+  """Scans folder gmock_root to generate gmock/gmock.h in output_dir."""
+
+  output_file = file(os.path.join(output_dir, GMOCK_H_OUTPUT), 'w')
+  processed_files = sets.Set()  # Holds all gmock headers we've processed.
+
+  def ProcessFile(gmock_header_path):
+    """Processes the given gmock header file."""
+
+    # We don't process the same header twice.
+    if gmock_header_path in processed_files:
+      return
+
+    processed_files.add(gmock_header_path)
+
+    # Reads each line in the given gmock header.
+    for line in file(os.path.join(gmock_root, gmock_header_path), 'r'):
+      m = INCLUDE_GMOCK_FILE_REGEX.match(line)
+      if m:
+        # It's '#include "gmock/..."' - let's process it recursively.
+        ProcessFile('include/' + m.group(1))
+      else:
+        m = gtest.INCLUDE_GTEST_FILE_REGEX.match(line)
+        if m:
+          # It's '#include "gtest/foo.h"'.  We translate it to
+          # "gtest/gtest.h", regardless of what foo is, since all
+          # gtest headers are fused into gtest/gtest.h.
+
+          # There is no need to #include gtest.h twice.
+          if not gtest.GTEST_H_SEED in processed_files:
+            processed_files.add(gtest.GTEST_H_SEED)
+            output_file.write('#include "%s"\n' % (gtest.GTEST_H_OUTPUT,))
+        else:
+          # Otherwise we copy the line unchanged to the output file.
+          output_file.write(line)
+
+  ProcessFile(GMOCK_H_SEED)
+  output_file.close()
+
+
+def FuseGMockAllCcToFile(gmock_root, output_file):
+  """Scans folder gmock_root to fuse gmock-all.cc into output_file."""
+
+  processed_files = sets.Set()
+
+  def ProcessFile(gmock_source_file):
+    """Processes the given gmock source file."""
+
+    # We don't process the same #included file twice.
+    if gmock_source_file in processed_files:
+      return
+
+    processed_files.add(gmock_source_file)
+
+    # Reads each line in the given gmock source file.
+    for line in file(os.path.join(gmock_root, gmock_source_file), 'r'):
+      m = INCLUDE_GMOCK_FILE_REGEX.match(line)
+      if m:
+        # It's '#include "gmock/foo.h"'.  We treat it as '#include
+        # "gmock/gmock.h"', as all other gmock headers are being fused
+        # into gmock.h and cannot be #included directly.
+
+        # There is no need to #include "gmock/gmock.h" more than once.
+        if not GMOCK_H_SEED in processed_files:
+          processed_files.add(GMOCK_H_SEED)
+          output_file.write('#include "%s"\n' % (GMOCK_H_OUTPUT,))
+      else:
+        m = gtest.INCLUDE_GTEST_FILE_REGEX.match(line)
+        if m:
+          # It's '#include "gtest/..."'.
+          # There is no need to #include gtest.h as it has been
+          # #included by gtest-all.cc.
+          pass
+        else:
+          m = gtest.INCLUDE_SRC_FILE_REGEX.match(line)
+          if m:
+            # It's '#include "src/foo"' - let's process it recursively.
+            ProcessFile(m.group(1))
+          else:
+            # Otherwise we copy the line unchanged to the output file.
+            output_file.write(line)
+
+  ProcessFile(GMOCK_ALL_CC_SEED)
+
+
+def FuseGMockGTestAllCc(gmock_root, output_dir):
+  """Scans folder gmock_root to generate gmock-gtest-all.cc in output_dir."""
+
+  output_file = file(os.path.join(output_dir, GMOCK_GTEST_ALL_CC_OUTPUT), 'w')
+  # First, fuse gtest-all.cc into gmock-gtest-all.cc.
+  gtest.FuseGTestAllCcToFile(GetGTestRootDir(gmock_root), output_file)
+  # Next, append fused gmock-all.cc to gmock-gtest-all.cc.
+  FuseGMockAllCcToFile(gmock_root, output_file)
+  output_file.close()
+
+
+def FuseGMock(gmock_root, output_dir):
+  """Fuses gtest.h, gmock.h, and gmock-gtest-all.h."""
+
+  ValidateGMockRootDir(gmock_root)
+  ValidateOutputDir(output_dir)
+
+  gtest.FuseGTestH(GetGTestRootDir(gmock_root), output_dir)
+  FuseGMockH(gmock_root, output_dir)
+  FuseGMockGTestAllCc(gmock_root, output_dir)
+
+
+def main():
+  argc = len(sys.argv)
+  if argc == 2:
+    # fuse_gmock_files.py OUTPUT_DIR
+    FuseGMock(DEFAULT_GMOCK_ROOT_DIR, sys.argv[1])
+  elif argc == 3:
+    # fuse_gmock_files.py GMOCK_ROOT_DIR OUTPUT_DIR
+    FuseGMock(sys.argv[1], sys.argv[2])
+  else:
+    print __doc__
+    sys.exit(1)
+
+
+if __name__ == '__main__':
+  main()
diff --git a/build/_deps/googletest-src/googlemock/scripts/generator/LICENSE b/build/_deps/googletest-src/googlemock/scripts/generator/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..87ea0636510a18a06e490117e717eb1fdf575f19
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/generator/LICENSE
@@ -0,0 +1,203 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
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+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
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+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
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+      "Contributor" shall mean Licensor and any individual or Legal Entity
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+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
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+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
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+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
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+
+      (b) You must cause any modified files to carry prominent notices
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+
+      (c) You must retain, in the Source form of any Derivative Works
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+      (d) If the Work includes a "NOTICE" text file as part of its
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+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
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+          that such additional attribution notices cannot be construed
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+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [2007] Neal Norwitz
+   Portions Copyright [2007] Google Inc.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/build/_deps/googletest-src/googlemock/scripts/generator/README b/build/_deps/googletest-src/googlemock/scripts/generator/README
new file mode 100644
index 0000000000000000000000000000000000000000..01fd463dda7f4c944300508d3ff6ee182144b7dc
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/generator/README
@@ -0,0 +1,34 @@
+
+The Google Mock class generator is an application that is part of cppclean.
+For more information about cppclean, visit http://code.google.com/p/cppclean/
+
+The mock generator requires Python 2.3.5 or later.  If you don't have Python
+installed on your system, you will also need to install it.  You can download
+Python from:  http://www.python.org/download/releases/
+
+To use the Google Mock class generator, you need to call it
+on the command line passing the header file and class for which you want
+to generate a Google Mock class.
+
+Make sure to install the scripts somewhere in your path.  Then you can
+run the program.
+
+  gmock_gen.py header-file.h [ClassName]...
+
+If no ClassNames are specified, all classes in the file are emitted.
+
+To change the indentation from the default of 2, set INDENT in
+the environment.  For example to use an indent of 4 spaces:
+
+INDENT=4 gmock_gen.py header-file.h ClassName
+
+This version was made from SVN revision 281 in the cppclean repository.
+
+Known Limitations
+-----------------
+Not all code will be generated properly.  For example, when mocking templated
+classes, the template information is lost.  You will need to add the template
+information manually.
+
+Not all permutations of using multiple pointers/references will be rendered
+properly.  These will also have to be fixed manually.
diff --git a/build/_deps/googletest-src/googlemock/scripts/generator/README.cppclean b/build/_deps/googletest-src/googlemock/scripts/generator/README.cppclean
new file mode 100644
index 0000000000000000000000000000000000000000..65431b61759319cd35d80bfd0aa78441c0963e7b
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/generator/README.cppclean
@@ -0,0 +1,115 @@
+Goal:
+-----
+  CppClean attempts to find problems in C++ source that slow development
+  in large code bases, for example various forms of unused code.
+  Unused code can be unused functions, methods, data members, types, etc
+  to unnecessary #include directives.  Unnecessary #includes can cause
+  considerable extra compiles increasing the edit-compile-run cycle.
+
+  The project home page is:   http://code.google.com/p/cppclean/
+
+
+Features:
+---------
+ * Find and print C++ language constructs: classes, methods, functions, etc.
+ * Find classes with virtual methods, no virtual destructor, and no bases
+ * Find global/static data that are potential problems when using threads
+ * Unnecessary forward class declarations
+ * Unnecessary function declarations
+ * Undeclared function definitions
+ * (planned) Find unnecessary header files #included
+   - No direct reference to anything in the header
+   - Header is unnecessary if classes were forward declared instead
+ * (planned) Source files that reference headers not directly #included,
+   ie, files that rely on a transitive #include from another header
+ * (planned) Unused members (private, protected, & public) methods and data
+ * (planned) Store AST in a SQL database so relationships can be queried
+
+AST is Abstract Syntax Tree, a representation of parsed source code.
+http://en.wikipedia.org/wiki/Abstract_syntax_tree
+
+
+System Requirements:
+--------------------
+ * Python 2.4 or later (2.3 probably works too)
+ * Works on Windows (untested), Mac OS X, and Unix
+
+
+How to Run:
+-----------
+  For all examples, it is assumed that cppclean resides in a directory called
+  /cppclean.
+
+  To print warnings for classes with virtual methods, no virtual destructor and
+  no base classes:
+
+      /cppclean/run.sh nonvirtual_dtors.py file1.h file2.h file3.cc ...
+
+  To print all the functions defined in header file(s):
+
+      /cppclean/run.sh functions.py file1.h file2.h ...
+
+  All the commands take multiple files on the command line.  Other programs
+  include: find_warnings, headers, methods, and types.  Some other programs
+  are available, but used primarily for debugging.
+
+  run.sh is a simple wrapper that sets PYTHONPATH to /cppclean and then
+  runs the program in /cppclean/cpp/PROGRAM.py.  There is currently
+  no equivalent for Windows.  Contributions for a run.bat file
+  would be greatly appreciated.
+
+
+How to Configure:
+-----------------
+  You can add a siteheaders.py file in /cppclean/cpp to configure where
+  to look for other headers (typically -I options passed to a compiler).
+  Currently two values are supported:  _TRANSITIVE and GetIncludeDirs.
+  _TRANSITIVE should be set to a boolean value (True or False) indicating
+  whether to transitively process all header files.  The default is False.
+
+  GetIncludeDirs is a function that takes a single argument and returns
+  a sequence of directories to include.  This can be a generator or
+  return a static list.
+
+      def GetIncludeDirs(filename):
+          return ['/some/path/with/other/headers']
+
+      # Here is a more complicated example.
+      def GetIncludeDirs(filename):
+          yield '/path1'
+          yield os.path.join('/path2', os.path.dirname(filename))
+          yield '/path3'
+
+
+How to Test:
+------------
+  For all examples, it is assumed that cppclean resides in a directory called
+  /cppclean.  The tests require
+
+  cd /cppclean
+  make test
+  # To generate expected results after a change:
+  make expected
+
+
+Current Status:
+---------------
+  The parser works pretty well for header files, parsing about 99% of Google's
+  header files.  Anything which inspects structure of C++ source files should
+  work reasonably well.  Function bodies are not transformed to an AST,
+  but left as tokens.  Much work is still needed on finding unused header files
+  and storing an AST in a database.
+
+
+Non-goals:
+----------
+ * Parsing all valid C++ source
+ * Handling invalid C++ source gracefully
+ * Compiling to machine code (or anything beyond an AST)
+
+
+Contact:
+--------
+  If you used cppclean, I would love to hear about your experiences
+  cppclean@googlegroups.com.  Even if you don't use cppclean, I'd like to
+  hear from you.  :-)  (You can contact me directly at:  nnorwitz@gmail.com)
diff --git a/build/_deps/googletest-src/googlemock/scripts/generator/cpp/__init__.py b/build/_deps/googletest-src/googlemock/scripts/generator/cpp/__init__.py
new file mode 100755
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/build/_deps/googletest-src/googlemock/scripts/generator/cpp/ast.py b/build/_deps/googletest-src/googlemock/scripts/generator/cpp/ast.py
new file mode 100755
index 0000000000000000000000000000000000000000..f14728b4612a2476474b1f1140544460d7ebd192
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/generator/cpp/ast.py
@@ -0,0 +1,1736 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 Neal Norwitz
+# Portions Copyright 2007 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Generate an Abstract Syntax Tree (AST) for C++."""
+
+__author__ = 'nnorwitz@google.com (Neal Norwitz)'
+
+
+# TODO:
+#  * Tokens should never be exported, need to convert to Nodes
+#    (return types, parameters, etc.)
+#  * Handle static class data for templatized classes
+#  * Handle casts (both C++ and C-style)
+#  * Handle conditions and loops (if/else, switch, for, while/do)
+#
+# TODO much, much later:
+#  * Handle #define
+#  * exceptions
+
+
+try:
+    # Python 3.x
+    import builtins
+except ImportError:
+    # Python 2.x
+    import __builtin__ as builtins
+
+import sys
+import traceback
+
+from cpp import keywords
+from cpp import tokenize
+from cpp import utils
+
+
+if not hasattr(builtins, 'reversed'):
+    # Support Python 2.3 and earlier.
+    def reversed(seq):
+        for i in range(len(seq)-1, -1, -1):
+            yield seq[i]
+
+if not hasattr(builtins, 'next'):
+    # Support Python 2.5 and earlier.
+    def next(obj):
+        return obj.next()
+
+
+VISIBILITY_PUBLIC, VISIBILITY_PROTECTED, VISIBILITY_PRIVATE = range(3)
+
+FUNCTION_NONE = 0x00
+FUNCTION_CONST = 0x01
+FUNCTION_VIRTUAL = 0x02
+FUNCTION_PURE_VIRTUAL = 0x04
+FUNCTION_CTOR = 0x08
+FUNCTION_DTOR = 0x10
+FUNCTION_ATTRIBUTE = 0x20
+FUNCTION_UNKNOWN_ANNOTATION = 0x40
+FUNCTION_THROW = 0x80
+FUNCTION_OVERRIDE = 0x100
+
+"""
+These are currently unused.  Should really handle these properly at some point.
+
+TYPE_MODIFIER_INLINE   = 0x010000
+TYPE_MODIFIER_EXTERN   = 0x020000
+TYPE_MODIFIER_STATIC   = 0x040000
+TYPE_MODIFIER_CONST    = 0x080000
+TYPE_MODIFIER_REGISTER = 0x100000
+TYPE_MODIFIER_VOLATILE = 0x200000
+TYPE_MODIFIER_MUTABLE  = 0x400000
+
+TYPE_MODIFIER_MAP = {
+    'inline': TYPE_MODIFIER_INLINE,
+    'extern': TYPE_MODIFIER_EXTERN,
+    'static': TYPE_MODIFIER_STATIC,
+    'const': TYPE_MODIFIER_CONST,
+    'register': TYPE_MODIFIER_REGISTER,
+    'volatile': TYPE_MODIFIER_VOLATILE,
+    'mutable': TYPE_MODIFIER_MUTABLE,
+    }
+"""
+
+_INTERNAL_TOKEN = 'internal'
+_NAMESPACE_POP = 'ns-pop'
+
+
+# TODO(nnorwitz): use this as a singleton for templated_types, etc
+# where we don't want to create a new empty dict each time.  It is also const.
+class _NullDict(object):
+    __contains__ = lambda self: False
+    keys = values = items = iterkeys = itervalues = iteritems = lambda self: ()
+
+
+# TODO(nnorwitz): move AST nodes into a separate module.
+class Node(object):
+    """Base AST node."""
+
+    def __init__(self, start, end):
+        self.start = start
+        self.end = end
+
+    def IsDeclaration(self):
+        """Returns bool if this node is a declaration."""
+        return False
+
+    def IsDefinition(self):
+        """Returns bool if this node is a definition."""
+        return False
+
+    def IsExportable(self):
+        """Returns bool if this node exportable from a header file."""
+        return False
+
+    def Requires(self, node):
+        """Does this AST node require the definition of the node passed in?"""
+        return False
+
+    def XXX__str__(self):
+        return self._StringHelper(self.__class__.__name__, '')
+
+    def _StringHelper(self, name, suffix):
+        if not utils.DEBUG:
+            return '%s(%s)' % (name, suffix)
+        return '%s(%d, %d, %s)' % (name, self.start, self.end, suffix)
+
+    def __repr__(self):
+        return str(self)
+
+
+class Define(Node):
+    def __init__(self, start, end, name, definition):
+        Node.__init__(self, start, end)
+        self.name = name
+        self.definition = definition
+
+    def __str__(self):
+        value = '%s %s' % (self.name, self.definition)
+        return self._StringHelper(self.__class__.__name__, value)
+
+
+class Include(Node):
+    def __init__(self, start, end, filename, system):
+        Node.__init__(self, start, end)
+        self.filename = filename
+        self.system = system
+
+    def __str__(self):
+        fmt = '"%s"'
+        if self.system:
+            fmt = '<%s>'
+        return self._StringHelper(self.__class__.__name__, fmt % self.filename)
+
+
+class Goto(Node):
+    def __init__(self, start, end, label):
+        Node.__init__(self, start, end)
+        self.label = label
+
+    def __str__(self):
+        return self._StringHelper(self.__class__.__name__, str(self.label))
+
+
+class Expr(Node):
+    def __init__(self, start, end, expr):
+        Node.__init__(self, start, end)
+        self.expr = expr
+
+    def Requires(self, node):
+        # TODO(nnorwitz): impl.
+        return False
+
+    def __str__(self):
+        return self._StringHelper(self.__class__.__name__, str(self.expr))
+
+
+class Return(Expr):
+    pass
+
+
+class Delete(Expr):
+    pass
+
+
+class Friend(Expr):
+    def __init__(self, start, end, expr, namespace):
+        Expr.__init__(self, start, end, expr)
+        self.namespace = namespace[:]
+
+
+class Using(Node):
+    def __init__(self, start, end, names):
+        Node.__init__(self, start, end)
+        self.names = names
+
+    def __str__(self):
+        return self._StringHelper(self.__class__.__name__, str(self.names))
+
+
+class Parameter(Node):
+    def __init__(self, start, end, name, parameter_type, default):
+        Node.__init__(self, start, end)
+        self.name = name
+        self.type = parameter_type
+        self.default = default
+
+    def Requires(self, node):
+        # TODO(nnorwitz): handle namespaces, etc.
+        return self.type.name == node.name
+
+    def __str__(self):
+        name = str(self.type)
+        suffix = '%s %s' % (name, self.name)
+        if self.default:
+            suffix += ' = ' + ''.join([d.name for d in self.default])
+        return self._StringHelper(self.__class__.__name__, suffix)
+
+
+class _GenericDeclaration(Node):
+    def __init__(self, start, end, name, namespace):
+        Node.__init__(self, start, end)
+        self.name = name
+        self.namespace = namespace[:]
+
+    def FullName(self):
+        prefix = ''
+        if self.namespace and self.namespace[-1]:
+            prefix = '::'.join(self.namespace) + '::'
+        return prefix + self.name
+
+    def _TypeStringHelper(self, suffix):
+        if self.namespace:
+            names = [n or '<anonymous>' for n in self.namespace]
+            suffix += ' in ' + '::'.join(names)
+        return self._StringHelper(self.__class__.__name__, suffix)
+
+
+# TODO(nnorwitz): merge with Parameter in some way?
+class VariableDeclaration(_GenericDeclaration):
+    def __init__(self, start, end, name, var_type, initial_value, namespace):
+        _GenericDeclaration.__init__(self, start, end, name, namespace)
+        self.type = var_type
+        self.initial_value = initial_value
+
+    def Requires(self, node):
+        # TODO(nnorwitz): handle namespaces, etc.
+        return self.type.name == node.name
+
+    def ToString(self):
+        """Return a string that tries to reconstitute the variable decl."""
+        suffix = '%s %s' % (self.type, self.name)
+        if self.initial_value:
+            suffix += ' = ' + self.initial_value
+        return suffix
+
+    def __str__(self):
+        return self._StringHelper(self.__class__.__name__, self.ToString())
+
+
+class Typedef(_GenericDeclaration):
+    def __init__(self, start, end, name, alias, namespace):
+        _GenericDeclaration.__init__(self, start, end, name, namespace)
+        self.alias = alias
+
+    def IsDefinition(self):
+        return True
+
+    def IsExportable(self):
+        return True
+
+    def Requires(self, node):
+        # TODO(nnorwitz): handle namespaces, etc.
+        name = node.name
+        for token in self.alias:
+            if token is not None and name == token.name:
+                return True
+        return False
+
+    def __str__(self):
+        suffix = '%s, %s' % (self.name, self.alias)
+        return self._TypeStringHelper(suffix)
+
+
+class _NestedType(_GenericDeclaration):
+    def __init__(self, start, end, name, fields, namespace):
+        _GenericDeclaration.__init__(self, start, end, name, namespace)
+        self.fields = fields
+
+    def IsDefinition(self):
+        return True
+
+    def IsExportable(self):
+        return True
+
+    def __str__(self):
+        suffix = '%s, {%s}' % (self.name, self.fields)
+        return self._TypeStringHelper(suffix)
+
+
+class Union(_NestedType):
+    pass
+
+
+class Enum(_NestedType):
+    pass
+
+
+class Class(_GenericDeclaration):
+    def __init__(self, start, end, name, bases, templated_types, body, namespace):
+        _GenericDeclaration.__init__(self, start, end, name, namespace)
+        self.bases = bases
+        self.body = body
+        self.templated_types = templated_types
+
+    def IsDeclaration(self):
+        return self.bases is None and self.body is None
+
+    def IsDefinition(self):
+        return not self.IsDeclaration()
+
+    def IsExportable(self):
+        return not self.IsDeclaration()
+
+    def Requires(self, node):
+        # TODO(nnorwitz): handle namespaces, etc.
+        if self.bases:
+            for token_list in self.bases:
+                # TODO(nnorwitz): bases are tokens, do name comparison.
+                for token in token_list:
+                    if token.name == node.name:
+                        return True
+        # TODO(nnorwitz): search in body too.
+        return False
+
+    def __str__(self):
+        name = self.name
+        if self.templated_types:
+            name += '<%s>' % self.templated_types
+        suffix = '%s, %s, %s' % (name, self.bases, self.body)
+        return self._TypeStringHelper(suffix)
+
+
+class Struct(Class):
+    pass
+
+
+class Function(_GenericDeclaration):
+    def __init__(self, start, end, name, return_type, parameters,
+                 modifiers, templated_types, body, namespace):
+        _GenericDeclaration.__init__(self, start, end, name, namespace)
+        converter = TypeConverter(namespace)
+        self.return_type = converter.CreateReturnType(return_type)
+        self.parameters = converter.ToParameters(parameters)
+        self.modifiers = modifiers
+        self.body = body
+        self.templated_types = templated_types
+
+    def IsDeclaration(self):
+        return self.body is None
+
+    def IsDefinition(self):
+        return self.body is not None
+
+    def IsExportable(self):
+        if self.return_type and 'static' in self.return_type.modifiers:
+            return False
+        return None not in self.namespace
+
+    def Requires(self, node):
+        if self.parameters:
+            # TODO(nnorwitz): parameters are tokens, do name comparison.
+            for p in self.parameters:
+                if p.name == node.name:
+                    return True
+        # TODO(nnorwitz): search in body too.
+        return False
+
+    def __str__(self):
+        # TODO(nnorwitz): add templated_types.
+        suffix = ('%s %s(%s), 0x%02x, %s' %
+                  (self.return_type, self.name, self.parameters,
+                   self.modifiers, self.body))
+        return self._TypeStringHelper(suffix)
+
+
+class Method(Function):
+    def __init__(self, start, end, name, in_class, return_type, parameters,
+                 modifiers, templated_types, body, namespace):
+        Function.__init__(self, start, end, name, return_type, parameters,
+                          modifiers, templated_types, body, namespace)
+        # TODO(nnorwitz): in_class could also be a namespace which can
+        # mess up finding functions properly.
+        self.in_class = in_class
+
+
+class Type(_GenericDeclaration):
+    """Type used for any variable (eg class, primitive, struct, etc)."""
+
+    def __init__(self, start, end, name, templated_types, modifiers,
+                 reference, pointer, array):
+        """
+        Args:
+          name: str name of main type
+          templated_types: [Class (Type?)] template type info between <>
+          modifiers: [str] type modifiers (keywords) eg, const, mutable, etc.
+          reference, pointer, array: bools
+        """
+        _GenericDeclaration.__init__(self, start, end, name, [])
+        self.templated_types = templated_types
+        if not name and modifiers:
+            self.name = modifiers.pop()
+        self.modifiers = modifiers
+        self.reference = reference
+        self.pointer = pointer
+        self.array = array
+
+    def __str__(self):
+        prefix = ''
+        if self.modifiers:
+            prefix = ' '.join(self.modifiers) + ' '
+        name = str(self.name)
+        if self.templated_types:
+            name += '<%s>' % self.templated_types
+        suffix = prefix + name
+        if self.reference:
+            suffix += '&'
+        if self.pointer:
+            suffix += '*'
+        if self.array:
+            suffix += '[]'
+        return self._TypeStringHelper(suffix)
+
+    # By definition, Is* are always False.  A Type can only exist in
+    # some sort of variable declaration, parameter, or return value.
+    def IsDeclaration(self):
+        return False
+
+    def IsDefinition(self):
+        return False
+
+    def IsExportable(self):
+        return False
+
+
+class TypeConverter(object):
+
+    def __init__(self, namespace_stack):
+        self.namespace_stack = namespace_stack
+
+    def _GetTemplateEnd(self, tokens, start):
+        count = 1
+        end = start
+        while 1:
+            token = tokens[end]
+            end += 1
+            if token.name == '<':
+                count += 1
+            elif token.name == '>':
+                count -= 1
+                if count == 0:
+                    break
+        return tokens[start:end-1], end
+
+    def ToType(self, tokens):
+        """Convert [Token,...] to [Class(...), ] useful for base classes.
+        For example, code like class Foo : public Bar<x, y> { ... };
+        the "Bar<x, y>" portion gets converted to an AST.
+
+        Returns:
+          [Class(...), ...]
+        """
+        result = []
+        name_tokens = []
+        reference = pointer = array = False
+
+        def AddType(templated_types):
+            # Partition tokens into name and modifier tokens.
+            names = []
+            modifiers = []
+            for t in name_tokens:
+                if keywords.IsKeyword(t.name):
+                    modifiers.append(t.name)
+                else:
+                    names.append(t.name)
+            name = ''.join(names)
+            if name_tokens:
+                result.append(Type(name_tokens[0].start, name_tokens[-1].end,
+                                   name, templated_types, modifiers,
+                                   reference, pointer, array))
+            del name_tokens[:]
+
+        i = 0
+        end = len(tokens)
+        while i < end:
+            token = tokens[i]
+            if token.name == '<':
+                new_tokens, new_end = self._GetTemplateEnd(tokens, i+1)
+                AddType(self.ToType(new_tokens))
+                # If there is a comma after the template, we need to consume
+                # that here otherwise it becomes part of the name.
+                i = new_end
+                reference = pointer = array = False
+            elif token.name == ',':
+                AddType([])
+                reference = pointer = array = False
+            elif token.name == '*':
+                pointer = True
+            elif token.name == '&':
+                reference = True
+            elif token.name == '[':
+               pointer = True
+            elif token.name == ']':
+                pass
+            else:
+                name_tokens.append(token)
+            i += 1
+
+        if name_tokens:
+            # No '<' in the tokens, just a simple name and no template.
+            AddType([])
+        return result
+
+    def DeclarationToParts(self, parts, needs_name_removed):
+        name = None
+        default = []
+        if needs_name_removed:
+            # Handle default (initial) values properly.
+            for i, t in enumerate(parts):
+                if t.name == '=':
+                    default = parts[i+1:]
+                    name = parts[i-1].name
+                    if name == ']' and parts[i-2].name == '[':
+                        name = parts[i-3].name
+                        i -= 1
+                    parts = parts[:i-1]
+                    break
+            else:
+                if parts[-1].token_type == tokenize.NAME:
+                    name = parts.pop().name
+                else:
+                    # TODO(nnorwitz): this is a hack that happens for code like
+                    # Register(Foo<T>); where it thinks this is a function call
+                    # but it's actually a declaration.
+                    name = '???'
+        modifiers = []
+        type_name = []
+        other_tokens = []
+        templated_types = []
+        i = 0
+        end = len(parts)
+        while i < end:
+            p = parts[i]
+            if keywords.IsKeyword(p.name):
+                modifiers.append(p.name)
+            elif p.name == '<':
+                templated_tokens, new_end = self._GetTemplateEnd(parts, i+1)
+                templated_types = self.ToType(templated_tokens)
+                i = new_end - 1
+                # Don't add a spurious :: to data members being initialized.
+                next_index = i + 1
+                if next_index < end and parts[next_index].name == '::':
+                    i += 1
+            elif p.name in ('[', ']', '='):
+                # These are handled elsewhere.
+                other_tokens.append(p)
+            elif p.name not in ('*', '&', '>'):
+                # Ensure that names have a space between them.
+                if (type_name and type_name[-1].token_type == tokenize.NAME and
+                    p.token_type == tokenize.NAME):
+                    type_name.append(tokenize.Token(tokenize.SYNTAX, ' ', 0, 0))
+                type_name.append(p)
+            else:
+                other_tokens.append(p)
+            i += 1
+        type_name = ''.join([t.name for t in type_name])
+        return name, type_name, templated_types, modifiers, default, other_tokens
+
+    def ToParameters(self, tokens):
+        if not tokens:
+            return []
+
+        result = []
+        name = type_name = ''
+        type_modifiers = []
+        pointer = reference = array = False
+        first_token = None
+        default = []
+
+        def AddParameter(end):
+            if default:
+                del default[0]  # Remove flag.
+            parts = self.DeclarationToParts(type_modifiers, True)
+            (name, type_name, templated_types, modifiers,
+             unused_default, unused_other_tokens) = parts
+            parameter_type = Type(first_token.start, first_token.end,
+                                  type_name, templated_types, modifiers,
+                                  reference, pointer, array)
+            p = Parameter(first_token.start, end, name,
+                          parameter_type, default)
+            result.append(p)
+
+        template_count = 0
+        for s in tokens:
+            if not first_token:
+                first_token = s
+            if s.name == '<':
+                template_count += 1
+            elif s.name == '>':
+                template_count -= 1
+            if template_count > 0:
+                type_modifiers.append(s)
+                continue
+
+            if s.name == ',':
+                AddParameter(s.start)
+                name = type_name = ''
+                type_modifiers = []
+                pointer = reference = array = False
+                first_token = None
+                default = []
+            elif s.name == '*':
+                pointer = True
+            elif s.name == '&':
+                reference = True
+            elif s.name == '[':
+                array = True
+            elif s.name == ']':
+                pass  # Just don't add to type_modifiers.
+            elif s.name == '=':
+                # Got a default value.  Add any value (None) as a flag.
+                default.append(None)
+            elif default:
+                default.append(s)
+            else:
+                type_modifiers.append(s)
+        AddParameter(tokens[-1].end)
+        return result
+
+    def CreateReturnType(self, return_type_seq):
+        if not return_type_seq:
+            return None
+        start = return_type_seq[0].start
+        end = return_type_seq[-1].end
+        _, name, templated_types, modifiers, default, other_tokens = \
+           self.DeclarationToParts(return_type_seq, False)
+        names = [n.name for n in other_tokens]
+        reference = '&' in names
+        pointer = '*' in names
+        array = '[' in names
+        return Type(start, end, name, templated_types, modifiers,
+                    reference, pointer, array)
+
+    def GetTemplateIndices(self, names):
+        # names is a list of strings.
+        start = names.index('<')
+        end = len(names) - 1
+        while end > 0:
+            if names[end] == '>':
+                break
+            end -= 1
+        return start, end+1
+
+class AstBuilder(object):
+    def __init__(self, token_stream, filename, in_class='', visibility=None,
+                 namespace_stack=[]):
+        self.tokens = token_stream
+        self.filename = filename
+        # TODO(nnorwitz): use a better data structure (deque) for the queue.
+        # Switching directions of the "queue" improved perf by about 25%.
+        # Using a deque should be even better since we access from both sides.
+        self.token_queue = []
+        self.namespace_stack = namespace_stack[:]
+        self.in_class = in_class
+        if in_class is None:
+            self.in_class_name_only = None
+        else:
+            self.in_class_name_only = in_class.split('::')[-1]
+        self.visibility = visibility
+        self.in_function = False
+        self.current_token = None
+        # Keep the state whether we are currently handling a typedef or not.
+        self._handling_typedef = False
+
+        self.converter = TypeConverter(self.namespace_stack)
+
+    def HandleError(self, msg, token):
+        printable_queue = list(reversed(self.token_queue[-20:]))
+        sys.stderr.write('Got %s in %s @ %s %s\n' %
+                         (msg, self.filename, token, printable_queue))
+
+    def Generate(self):
+        while 1:
+            token = self._GetNextToken()
+            if not token:
+                break
+
+            # Get the next token.
+            self.current_token = token
+
+            # Dispatch on the next token type.
+            if token.token_type == _INTERNAL_TOKEN:
+                if token.name == _NAMESPACE_POP:
+                    self.namespace_stack.pop()
+                continue
+
+            try:
+                result = self._GenerateOne(token)
+                if result is not None:
+                    yield result
+            except:
+                self.HandleError('exception', token)
+                raise
+
+    def _CreateVariable(self, pos_token, name, type_name, type_modifiers,
+                        ref_pointer_name_seq, templated_types, value=None):
+        reference = '&' in ref_pointer_name_seq
+        pointer = '*' in ref_pointer_name_seq
+        array = '[' in ref_pointer_name_seq
+        var_type = Type(pos_token.start, pos_token.end, type_name,
+                        templated_types, type_modifiers,
+                        reference, pointer, array)
+        return VariableDeclaration(pos_token.start, pos_token.end,
+                                   name, var_type, value, self.namespace_stack)
+
+    def _GenerateOne(self, token):
+        if token.token_type == tokenize.NAME:
+            if (keywords.IsKeyword(token.name) and
+                not keywords.IsBuiltinType(token.name)):
+                method = getattr(self, 'handle_' + token.name)
+                return method()
+            elif token.name == self.in_class_name_only:
+                # The token name is the same as the class, must be a ctor if
+                # there is a paren.  Otherwise, it's the return type.
+                # Peek ahead to get the next token to figure out which.
+                next = self._GetNextToken()
+                self._AddBackToken(next)
+                if next.token_type == tokenize.SYNTAX and next.name == '(':
+                    return self._GetMethod([token], FUNCTION_CTOR, None, True)
+                # Fall through--handle like any other method.
+
+            # Handle data or function declaration/definition.
+            syntax = tokenize.SYNTAX
+            temp_tokens, last_token = \
+                self._GetVarTokensUpTo(syntax, '(', ';', '{', '[')
+            temp_tokens.insert(0, token)
+            if last_token.name == '(':
+                # If there is an assignment before the paren,
+                # this is an expression, not a method.
+                expr = bool([e for e in temp_tokens if e.name == '='])
+                if expr:
+                    new_temp = self._GetTokensUpTo(tokenize.SYNTAX, ';')
+                    temp_tokens.append(last_token)
+                    temp_tokens.extend(new_temp)
+                    last_token = tokenize.Token(tokenize.SYNTAX, ';', 0, 0)
+
+            if last_token.name == '[':
+                # Handle array, this isn't a method, unless it's an operator.
+                # TODO(nnorwitz): keep the size somewhere.
+                # unused_size = self._GetTokensUpTo(tokenize.SYNTAX, ']')
+                temp_tokens.append(last_token)
+                if temp_tokens[-2].name == 'operator':
+                    temp_tokens.append(self._GetNextToken())
+                else:
+                    temp_tokens2, last_token = \
+                        self._GetVarTokensUpTo(tokenize.SYNTAX, ';')
+                    temp_tokens.extend(temp_tokens2)
+
+            if last_token.name == ';':
+                # Handle data, this isn't a method.
+                parts = self.converter.DeclarationToParts(temp_tokens, True)
+                (name, type_name, templated_types, modifiers, default,
+                 unused_other_tokens) = parts
+
+                t0 = temp_tokens[0]
+                names = [t.name for t in temp_tokens]
+                if templated_types:
+                    start, end = self.converter.GetTemplateIndices(names)
+                    names = names[:start] + names[end:]
+                default = ''.join([t.name for t in default])
+                return self._CreateVariable(t0, name, type_name, modifiers,
+                                            names, templated_types, default)
+            if last_token.name == '{':
+                self._AddBackTokens(temp_tokens[1:])
+                self._AddBackToken(last_token)
+                method_name = temp_tokens[0].name
+                method = getattr(self, 'handle_' + method_name, None)
+                if not method:
+                    # Must be declaring a variable.
+                    # TODO(nnorwitz): handle the declaration.
+                    return None
+                return method()
+            return self._GetMethod(temp_tokens, 0, None, False)
+        elif token.token_type == tokenize.SYNTAX:
+            if token.name == '~' and self.in_class:
+                # Must be a dtor (probably not in method body).
+                token = self._GetNextToken()
+                # self.in_class can contain A::Name, but the dtor will only
+                # be Name.  Make sure to compare against the right value.
+                if (token.token_type == tokenize.NAME and
+                    token.name == self.in_class_name_only):
+                    return self._GetMethod([token], FUNCTION_DTOR, None, True)
+            # TODO(nnorwitz): handle a lot more syntax.
+        elif token.token_type == tokenize.PREPROCESSOR:
+            # TODO(nnorwitz): handle more preprocessor directives.
+            # token starts with a #, so remove it and strip whitespace.
+            name = token.name[1:].lstrip()
+            if name.startswith('include'):
+                # Remove "include".
+                name = name[7:].strip()
+                assert name
+                # Handle #include \<newline> "header-on-second-line.h".
+                if name.startswith('\\'):
+                    name = name[1:].strip()
+                assert name[0] in '<"', token
+                assert name[-1] in '>"', token
+                system = name[0] == '<'
+                filename = name[1:-1]
+                return Include(token.start, token.end, filename, system)
+            if name.startswith('define'):
+                # Remove "define".
+                name = name[6:].strip()
+                assert name
+                value = ''
+                for i, c in enumerate(name):
+                    if c.isspace():
+                        value = name[i:].lstrip()
+                        name = name[:i]
+                        break
+                return Define(token.start, token.end, name, value)
+            if name.startswith('if') and name[2:3].isspace():
+                condition = name[3:].strip()
+                if condition.startswith('0') or condition.startswith('(0)'):
+                    self._SkipIf0Blocks()
+        return None
+
+    def _GetTokensUpTo(self, expected_token_type, expected_token):
+        return self._GetVarTokensUpTo(expected_token_type, expected_token)[0]
+
+    def _GetVarTokensUpTo(self, expected_token_type, *expected_tokens):
+        last_token = self._GetNextToken()
+        tokens = []
+        while (last_token.token_type != expected_token_type or
+               last_token.name not in expected_tokens):
+            tokens.append(last_token)
+            last_token = self._GetNextToken()
+        return tokens, last_token
+
+    # TODO(nnorwitz): remove _IgnoreUpTo() it shouldn't be necessary.
+    def _IgnoreUpTo(self, token_type, token):
+        unused_tokens = self._GetTokensUpTo(token_type, token)
+
+    def _SkipIf0Blocks(self):
+        count = 1
+        while 1:
+            token = self._GetNextToken()
+            if token.token_type != tokenize.PREPROCESSOR:
+                continue
+
+            name = token.name[1:].lstrip()
+            if name.startswith('endif'):
+                count -= 1
+                if count == 0:
+                    break
+            elif name.startswith('if'):
+                count += 1
+
+    def _GetMatchingChar(self, open_paren, close_paren, GetNextToken=None):
+        if GetNextToken is None:
+            GetNextToken = self._GetNextToken
+        # Assumes the current token is open_paren and we will consume
+        # and return up to the close_paren.
+        count = 1
+        token = GetNextToken()
+        while 1:
+            if token.token_type == tokenize.SYNTAX:
+                if token.name == open_paren:
+                    count += 1
+                elif token.name == close_paren:
+                    count -= 1
+                    if count == 0:
+                        break
+            yield token
+            token = GetNextToken()
+        yield token
+
+    def _GetParameters(self):
+        return self._GetMatchingChar('(', ')')
+
+    def GetScope(self):
+        return self._GetMatchingChar('{', '}')
+
+    def _GetNextToken(self):
+        if self.token_queue:
+            return self.token_queue.pop()
+        return next(self.tokens)
+
+    def _AddBackToken(self, token):
+        if token.whence == tokenize.WHENCE_STREAM:
+            token.whence = tokenize.WHENCE_QUEUE
+            self.token_queue.insert(0, token)
+        else:
+            assert token.whence == tokenize.WHENCE_QUEUE, token
+            self.token_queue.append(token)
+
+    def _AddBackTokens(self, tokens):
+        if tokens:
+            if tokens[-1].whence == tokenize.WHENCE_STREAM:
+                for token in tokens:
+                    token.whence = tokenize.WHENCE_QUEUE
+                self.token_queue[:0] = reversed(tokens)
+            else:
+                assert tokens[-1].whence == tokenize.WHENCE_QUEUE, tokens
+                self.token_queue.extend(reversed(tokens))
+
+    def GetName(self, seq=None):
+        """Returns ([tokens], next_token_info)."""
+        GetNextToken = self._GetNextToken
+        if seq is not None:
+            it = iter(seq)
+            GetNextToken = lambda: next(it)
+        next_token = GetNextToken()
+        tokens = []
+        last_token_was_name = False
+        while (next_token.token_type == tokenize.NAME or
+               (next_token.token_type == tokenize.SYNTAX and
+                next_token.name in ('::', '<'))):
+            # Two NAMEs in a row means the identifier should terminate.
+            # It's probably some sort of variable declaration.
+            if last_token_was_name and next_token.token_type == tokenize.NAME:
+                break
+            last_token_was_name = next_token.token_type == tokenize.NAME
+            tokens.append(next_token)
+            # Handle templated names.
+            if next_token.name == '<':
+                tokens.extend(self._GetMatchingChar('<', '>', GetNextToken))
+                last_token_was_name = True
+            next_token = GetNextToken()
+        return tokens, next_token
+
+    def GetMethod(self, modifiers, templated_types):
+        return_type_and_name = self._GetTokensUpTo(tokenize.SYNTAX, '(')
+        assert len(return_type_and_name) >= 1
+        return self._GetMethod(return_type_and_name, modifiers, templated_types,
+                               False)
+
+    def _GetMethod(self, return_type_and_name, modifiers, templated_types,
+                   get_paren):
+        template_portion = None
+        if get_paren:
+            token = self._GetNextToken()
+            assert token.token_type == tokenize.SYNTAX, token
+            if token.name == '<':
+                # Handle templatized dtors.
+                template_portion = [token]
+                template_portion.extend(self._GetMatchingChar('<', '>'))
+                token = self._GetNextToken()
+            assert token.token_type == tokenize.SYNTAX, token
+            assert token.name == '(', token
+
+        name = return_type_and_name.pop()
+        # Handle templatized ctors.
+        if name.name == '>':
+            index = 1
+            while return_type_and_name[index].name != '<':
+                index += 1
+            template_portion = return_type_and_name[index:] + [name]
+            del return_type_and_name[index:]
+            name = return_type_and_name.pop()
+        elif name.name == ']':
+            rt = return_type_and_name
+            assert rt[-1].name == '[', return_type_and_name
+            assert rt[-2].name == 'operator', return_type_and_name
+            name_seq = return_type_and_name[-2:]
+            del return_type_and_name[-2:]
+            name = tokenize.Token(tokenize.NAME, 'operator[]',
+                                  name_seq[0].start, name.end)
+            # Get the open paren so _GetParameters() below works.
+            unused_open_paren = self._GetNextToken()
+
+        # TODO(nnorwitz): store template_portion.
+        return_type = return_type_and_name
+        indices = name
+        if return_type:
+            indices = return_type[0]
+
+        # Force ctor for templatized ctors.
+        if name.name == self.in_class and not modifiers:
+            modifiers |= FUNCTION_CTOR
+        parameters = list(self._GetParameters())
+        del parameters[-1]              # Remove trailing ')'.
+
+        # Handling operator() is especially weird.
+        if name.name == 'operator' and not parameters:
+            token = self._GetNextToken()
+            assert token.name == '(', token
+            parameters = list(self._GetParameters())
+            del parameters[-1]          # Remove trailing ')'.
+
+        token = self._GetNextToken()
+        while token.token_type == tokenize.NAME:
+            modifier_token = token
+            token = self._GetNextToken()
+            if modifier_token.name == 'const':
+                modifiers |= FUNCTION_CONST
+            elif modifier_token.name == '__attribute__':
+                # TODO(nnorwitz): handle more __attribute__ details.
+                modifiers |= FUNCTION_ATTRIBUTE
+                assert token.name == '(', token
+                # Consume everything between the (parens).
+                unused_tokens = list(self._GetMatchingChar('(', ')'))
+                token = self._GetNextToken()
+            elif modifier_token.name == 'throw':
+                modifiers |= FUNCTION_THROW
+                assert token.name == '(', token
+                # Consume everything between the (parens).
+                unused_tokens = list(self._GetMatchingChar('(', ')'))
+                token = self._GetNextToken()
+            elif modifier_token.name == 'override':
+                modifiers |= FUNCTION_OVERRIDE
+            elif modifier_token.name == modifier_token.name.upper():
+                # HACK(nnorwitz):  assume that all upper-case names
+                # are some macro we aren't expanding.
+                modifiers |= FUNCTION_UNKNOWN_ANNOTATION
+            else:
+                self.HandleError('unexpected token', modifier_token)
+
+        assert token.token_type == tokenize.SYNTAX, token
+        # Handle ctor initializers.
+        if token.name == ':':
+            # TODO(nnorwitz): anything else to handle for initializer list?
+            while token.name != ';' and token.name != '{':
+                token = self._GetNextToken()
+
+        # Handle pointer to functions that are really data but look
+        # like method declarations.
+        if token.name == '(':
+            if parameters[0].name == '*':
+                # name contains the return type.
+                name = parameters.pop()
+                # parameters contains the name of the data.
+                modifiers = [p.name for p in parameters]
+                # Already at the ( to open the parameter list.
+                function_parameters = list(self._GetMatchingChar('(', ')'))
+                del function_parameters[-1]  # Remove trailing ')'.
+                # TODO(nnorwitz): store the function_parameters.
+                token = self._GetNextToken()
+                assert token.token_type == tokenize.SYNTAX, token
+                assert token.name == ';', token
+                return self._CreateVariable(indices, name.name, indices.name,
+                                            modifiers, '', None)
+            # At this point, we got something like:
+            #  return_type (type::*name_)(params);
+            # This is a data member called name_ that is a function pointer.
+            # With this code: void (sq_type::*field_)(string&);
+            # We get: name=void return_type=[] parameters=sq_type ... field_
+            # TODO(nnorwitz): is return_type always empty?
+            # TODO(nnorwitz): this isn't even close to being correct.
+            # Just put in something so we don't crash and can move on.
+            real_name = parameters[-1]
+            modifiers = [p.name for p in self._GetParameters()]
+            del modifiers[-1]           # Remove trailing ')'.
+            return self._CreateVariable(indices, real_name.name, indices.name,
+                                        modifiers, '', None)
+
+        if token.name == '{':
+            body = list(self.GetScope())
+            del body[-1]                # Remove trailing '}'.
+        else:
+            body = None
+            if token.name == '=':
+                token = self._GetNextToken()
+
+                if token.name == 'default' or token.name == 'delete':
+                    # Ignore explicitly defaulted and deleted special members
+                    # in C++11.
+                    token = self._GetNextToken()
+                else:
+                    # Handle pure-virtual declarations.
+                    assert token.token_type == tokenize.CONSTANT, token
+                    assert token.name == '0', token
+                    modifiers |= FUNCTION_PURE_VIRTUAL
+                    token = self._GetNextToken()
+
+            if token.name == '[':
+                # TODO(nnorwitz): store tokens and improve parsing.
+                # template <typename T, size_t N> char (&ASH(T (&seq)[N]))[N];
+                tokens = list(self._GetMatchingChar('[', ']'))
+                token = self._GetNextToken()
+
+            assert token.name == ';', (token, return_type_and_name, parameters)
+
+        # Looks like we got a method, not a function.
+        if len(return_type) > 2 and return_type[-1].name == '::':
+            return_type, in_class = \
+                         self._GetReturnTypeAndClassName(return_type)
+            return Method(indices.start, indices.end, name.name, in_class,
+                          return_type, parameters, modifiers, templated_types,
+                          body, self.namespace_stack)
+        return Function(indices.start, indices.end, name.name, return_type,
+                        parameters, modifiers, templated_types, body,
+                        self.namespace_stack)
+
+    def _GetReturnTypeAndClassName(self, token_seq):
+        # Splitting the return type from the class name in a method
+        # can be tricky.  For example, Return::Type::Is::Hard::To::Find().
+        # Where is the return type and where is the class name?
+        # The heuristic used is to pull the last name as the class name.
+        # This includes all the templated type info.
+        # TODO(nnorwitz): if there is only One name like in the
+        # example above, punt and assume the last bit is the class name.
+
+        # Ignore a :: prefix, if exists so we can find the first real name.
+        i = 0
+        if token_seq[0].name == '::':
+            i = 1
+        # Ignore a :: suffix, if exists.
+        end = len(token_seq) - 1
+        if token_seq[end-1].name == '::':
+            end -= 1
+
+        # Make a copy of the sequence so we can append a sentinel
+        # value. This is required for GetName will has to have some
+        # terminating condition beyond the last name.
+        seq_copy = token_seq[i:end]
+        seq_copy.append(tokenize.Token(tokenize.SYNTAX, '', 0, 0))
+        names = []
+        while i < end:
+            # Iterate through the sequence parsing out each name.
+            new_name, next = self.GetName(seq_copy[i:])
+            assert new_name, 'Got empty new_name, next=%s' % next
+            # We got a pointer or ref.  Add it to the name.
+            if next and next.token_type == tokenize.SYNTAX:
+                new_name.append(next)
+            names.append(new_name)
+            i += len(new_name)
+
+        # Now that we have the names, it's time to undo what we did.
+
+        # Remove the sentinel value.
+        names[-1].pop()
+        # Flatten the token sequence for the return type.
+        return_type = [e for seq in names[:-1] for e in seq]
+        # The class name is the last name.
+        class_name = names[-1]
+        return return_type, class_name
+
+    def handle_bool(self):
+        pass
+
+    def handle_char(self):
+        pass
+
+    def handle_int(self):
+        pass
+
+    def handle_long(self):
+        pass
+
+    def handle_short(self):
+        pass
+
+    def handle_double(self):
+        pass
+
+    def handle_float(self):
+        pass
+
+    def handle_void(self):
+        pass
+
+    def handle_wchar_t(self):
+        pass
+
+    def handle_unsigned(self):
+        pass
+
+    def handle_signed(self):
+        pass
+
+    def _GetNestedType(self, ctor):
+        name = None
+        name_tokens, token = self.GetName()
+        if name_tokens:
+            name = ''.join([t.name for t in name_tokens])
+
+        # Handle forward declarations.
+        if token.token_type == tokenize.SYNTAX and token.name == ';':
+            return ctor(token.start, token.end, name, None,
+                        self.namespace_stack)
+
+        if token.token_type == tokenize.NAME and self._handling_typedef:
+            self._AddBackToken(token)
+            return ctor(token.start, token.end, name, None,
+                        self.namespace_stack)
+
+        # Must be the type declaration.
+        fields = list(self._GetMatchingChar('{', '}'))
+        del fields[-1]                  # Remove trailing '}'.
+        if token.token_type == tokenize.SYNTAX and token.name == '{':
+            next = self._GetNextToken()
+            new_type = ctor(token.start, token.end, name, fields,
+                            self.namespace_stack)
+            # A name means this is an anonymous type and the name
+            # is the variable declaration.
+            if next.token_type != tokenize.NAME:
+                return new_type
+            name = new_type
+            token = next
+
+        # Must be variable declaration using the type prefixed with keyword.
+        assert token.token_type == tokenize.NAME, token
+        return self._CreateVariable(token, token.name, name, [], '', None)
+
+    def handle_struct(self):
+        # Special case the handling typedef/aliasing of structs here.
+        # It would be a pain to handle in the class code.
+        name_tokens, var_token = self.GetName()
+        if name_tokens:
+            next_token = self._GetNextToken()
+            is_syntax = (var_token.token_type == tokenize.SYNTAX and
+                         var_token.name[0] in '*&')
+            is_variable = (var_token.token_type == tokenize.NAME and
+                           next_token.name == ';')
+            variable = var_token
+            if is_syntax and not is_variable:
+                variable = next_token
+                temp = self._GetNextToken()
+                if temp.token_type == tokenize.SYNTAX and temp.name == '(':
+                    # Handle methods declared to return a struct.
+                    t0 = name_tokens[0]
+                    struct = tokenize.Token(tokenize.NAME, 'struct',
+                                            t0.start-7, t0.start-2)
+                    type_and_name = [struct]
+                    type_and_name.extend(name_tokens)
+                    type_and_name.extend((var_token, next_token))
+                    return self._GetMethod(type_and_name, 0, None, False)
+                assert temp.name == ';', (temp, name_tokens, var_token)
+            if is_syntax or (is_variable and not self._handling_typedef):
+                modifiers = ['struct']
+                type_name = ''.join([t.name for t in name_tokens])
+                position = name_tokens[0]
+                return self._CreateVariable(position, variable.name, type_name,
+                                            modifiers, var_token.name, None)
+            name_tokens.extend((var_token, next_token))
+            self._AddBackTokens(name_tokens)
+        else:
+            self._AddBackToken(var_token)
+        return self._GetClass(Struct, VISIBILITY_PUBLIC, None)
+
+    def handle_union(self):
+        return self._GetNestedType(Union)
+
+    def handle_enum(self):
+        token = self._GetNextToken()
+        if not (token.token_type == tokenize.NAME and token.name == 'class'):
+            self._AddBackToken(token)
+        return self._GetNestedType(Enum)
+
+    def handle_auto(self):
+        # TODO(nnorwitz): warn about using auto?  Probably not since it
+        # will be reclaimed and useful for C++0x.
+        pass
+
+    def handle_register(self):
+        pass
+
+    def handle_const(self):
+        pass
+
+    def handle_inline(self):
+        pass
+
+    def handle_extern(self):
+        pass
+
+    def handle_static(self):
+        pass
+
+    def handle_virtual(self):
+        # What follows must be a method.
+        token = token2 = self._GetNextToken()
+        if token.name == 'inline':
+            # HACK(nnorwitz): handle inline dtors by ignoring 'inline'.
+            token2 = self._GetNextToken()
+        if token2.token_type == tokenize.SYNTAX and token2.name == '~':
+            return self.GetMethod(FUNCTION_VIRTUAL + FUNCTION_DTOR, None)
+        assert token.token_type == tokenize.NAME or token.name == '::', token
+        return_type_and_name = self._GetTokensUpTo(tokenize.SYNTAX, '(')  # )
+        return_type_and_name.insert(0, token)
+        if token2 is not token:
+            return_type_and_name.insert(1, token2)
+        return self._GetMethod(return_type_and_name, FUNCTION_VIRTUAL,
+                               None, False)
+
+    def handle_volatile(self):
+        pass
+
+    def handle_mutable(self):
+        pass
+
+    def handle_public(self):
+        assert self.in_class
+        self.visibility = VISIBILITY_PUBLIC
+
+    def handle_protected(self):
+        assert self.in_class
+        self.visibility = VISIBILITY_PROTECTED
+
+    def handle_private(self):
+        assert self.in_class
+        self.visibility = VISIBILITY_PRIVATE
+
+    def handle_friend(self):
+        tokens = self._GetTokensUpTo(tokenize.SYNTAX, ';')
+        assert tokens
+        t0 = tokens[0]
+        return Friend(t0.start, t0.end, tokens, self.namespace_stack)
+
+    def handle_static_cast(self):
+        pass
+
+    def handle_const_cast(self):
+        pass
+
+    def handle_dynamic_cast(self):
+        pass
+
+    def handle_reinterpret_cast(self):
+        pass
+
+    def handle_new(self):
+        pass
+
+    def handle_delete(self):
+        tokens = self._GetTokensUpTo(tokenize.SYNTAX, ';')
+        assert tokens
+        return Delete(tokens[0].start, tokens[0].end, tokens)
+
+    def handle_typedef(self):
+        token = self._GetNextToken()
+        if (token.token_type == tokenize.NAME and
+            keywords.IsKeyword(token.name)):
+            # Token must be struct/enum/union/class.
+            method = getattr(self, 'handle_' + token.name)
+            self._handling_typedef = True
+            tokens = [method()]
+            self._handling_typedef = False
+        else:
+            tokens = [token]
+
+        # Get the remainder of the typedef up to the semi-colon.
+        tokens.extend(self._GetTokensUpTo(tokenize.SYNTAX, ';'))
+
+        # TODO(nnorwitz): clean all this up.
+        assert tokens
+        name = tokens.pop()
+        indices = name
+        if tokens:
+            indices = tokens[0]
+        if not indices:
+            indices = token
+        if name.name == ')':
+            # HACK(nnorwitz): Handle pointers to functions "properly".
+            if (len(tokens) >= 4 and
+                tokens[1].name == '(' and tokens[2].name == '*'):
+                tokens.append(name)
+                name = tokens[3]
+        elif name.name == ']':
+            # HACK(nnorwitz): Handle arrays properly.
+            if len(tokens) >= 2:
+                tokens.append(name)
+                name = tokens[1]
+        new_type = tokens
+        if tokens and isinstance(tokens[0], tokenize.Token):
+            new_type = self.converter.ToType(tokens)[0]
+        return Typedef(indices.start, indices.end, name.name,
+                       new_type, self.namespace_stack)
+
+    def handle_typeid(self):
+        pass  # Not needed yet.
+
+    def handle_typename(self):
+        pass  # Not needed yet.
+
+    def _GetTemplatedTypes(self):
+        result = {}
+        tokens = list(self._GetMatchingChar('<', '>'))
+        len_tokens = len(tokens) - 1    # Ignore trailing '>'.
+        i = 0
+        while i < len_tokens:
+            key = tokens[i].name
+            i += 1
+            if keywords.IsKeyword(key) or key == ',':
+                continue
+            type_name = default = None
+            if i < len_tokens:
+                i += 1
+                if tokens[i-1].name == '=':
+                    assert i < len_tokens, '%s %s' % (i, tokens)
+                    default, unused_next_token = self.GetName(tokens[i:])
+                    i += len(default)
+                else:
+                    if tokens[i-1].name != ',':
+                        # We got something like: Type variable.
+                        # Re-adjust the key (variable) and type_name (Type).
+                        key = tokens[i-1].name
+                        type_name = tokens[i-2]
+
+            result[key] = (type_name, default)
+        return result
+
+    def handle_template(self):
+        token = self._GetNextToken()
+        assert token.token_type == tokenize.SYNTAX, token
+        assert token.name == '<', token
+        templated_types = self._GetTemplatedTypes()
+        # TODO(nnorwitz): for now, just ignore the template params.
+        token = self._GetNextToken()
+        if token.token_type == tokenize.NAME:
+            if token.name == 'class':
+                return self._GetClass(Class, VISIBILITY_PRIVATE, templated_types)
+            elif token.name == 'struct':
+                return self._GetClass(Struct, VISIBILITY_PUBLIC, templated_types)
+            elif token.name == 'friend':
+                return self.handle_friend()
+        self._AddBackToken(token)
+        tokens, last = self._GetVarTokensUpTo(tokenize.SYNTAX, '(', ';')
+        tokens.append(last)
+        self._AddBackTokens(tokens)
+        if last.name == '(':
+            return self.GetMethod(FUNCTION_NONE, templated_types)
+        # Must be a variable definition.
+        return None
+
+    def handle_true(self):
+        pass  # Nothing to do.
+
+    def handle_false(self):
+        pass  # Nothing to do.
+
+    def handle_asm(self):
+        pass  # Not needed yet.
+
+    def handle_class(self):
+        return self._GetClass(Class, VISIBILITY_PRIVATE, None)
+
+    def _GetBases(self):
+        # Get base classes.
+        bases = []
+        while 1:
+            token = self._GetNextToken()
+            assert token.token_type == tokenize.NAME, token
+            # TODO(nnorwitz): store kind of inheritance...maybe.
+            if token.name not in ('public', 'protected', 'private'):
+                # If inheritance type is not specified, it is private.
+                # Just put the token back so we can form a name.
+                # TODO(nnorwitz): it would be good to warn about this.
+                self._AddBackToken(token)
+            else:
+                # Check for virtual inheritance.
+                token = self._GetNextToken()
+                if token.name != 'virtual':
+                    self._AddBackToken(token)
+                else:
+                    # TODO(nnorwitz): store that we got virtual for this base.
+                    pass
+            base, next_token = self.GetName()
+            bases_ast = self.converter.ToType(base)
+            assert len(bases_ast) == 1, bases_ast
+            bases.append(bases_ast[0])
+            assert next_token.token_type == tokenize.SYNTAX, next_token
+            if next_token.name == '{':
+                token = next_token
+                break
+            # Support multiple inheritance.
+            assert next_token.name == ',', next_token
+        return bases, token
+
+    def _GetClass(self, class_type, visibility, templated_types):
+        class_name = None
+        class_token = self._GetNextToken()
+        if class_token.token_type != tokenize.NAME:
+            assert class_token.token_type == tokenize.SYNTAX, class_token
+            token = class_token
+        else:
+            # Skip any macro (e.g. storage class specifiers) after the
+            # 'class' keyword.
+            next_token = self._GetNextToken()
+            if next_token.token_type == tokenize.NAME:
+                self._AddBackToken(next_token)
+            else:
+                self._AddBackTokens([class_token, next_token])
+            name_tokens, token = self.GetName()
+            class_name = ''.join([t.name for t in name_tokens])
+        bases = None
+        if token.token_type == tokenize.SYNTAX:
+            if token.name == ';':
+                # Forward declaration.
+                return class_type(class_token.start, class_token.end,
+                                  class_name, None, templated_types, None,
+                                  self.namespace_stack)
+            if token.name in '*&':
+                # Inline forward declaration.  Could be method or data.
+                name_token = self._GetNextToken()
+                next_token = self._GetNextToken()
+                if next_token.name == ';':
+                    # Handle data
+                    modifiers = ['class']
+                    return self._CreateVariable(class_token, name_token.name,
+                                                class_name,
+                                                modifiers, token.name, None)
+                else:
+                    # Assume this is a method.
+                    tokens = (class_token, token, name_token, next_token)
+                    self._AddBackTokens(tokens)
+                    return self.GetMethod(FUNCTION_NONE, None)
+            if token.name == ':':
+                bases, token = self._GetBases()
+
+        body = None
+        if token.token_type == tokenize.SYNTAX and token.name == '{':
+            assert token.token_type == tokenize.SYNTAX, token
+            assert token.name == '{', token
+
+            ast = AstBuilder(self.GetScope(), self.filename, class_name,
+                             visibility, self.namespace_stack)
+            body = list(ast.Generate())
+
+            if not self._handling_typedef:
+                token = self._GetNextToken()
+                if token.token_type != tokenize.NAME:
+                    assert token.token_type == tokenize.SYNTAX, token
+                    assert token.name == ';', token
+                else:
+                    new_class = class_type(class_token.start, class_token.end,
+                                           class_name, bases, None,
+                                           body, self.namespace_stack)
+
+                    modifiers = []
+                    return self._CreateVariable(class_token,
+                                                token.name, new_class,
+                                                modifiers, token.name, None)
+        else:
+            if not self._handling_typedef:
+                self.HandleError('non-typedef token', token)
+            self._AddBackToken(token)
+
+        return class_type(class_token.start, class_token.end, class_name,
+                          bases, templated_types, body, self.namespace_stack)
+
+    def handle_namespace(self):
+        token = self._GetNextToken()
+        # Support anonymous namespaces.
+        name = None
+        if token.token_type == tokenize.NAME:
+            name = token.name
+            token = self._GetNextToken()
+        self.namespace_stack.append(name)
+        assert token.token_type == tokenize.SYNTAX, token
+        # Create an internal token that denotes when the namespace is complete.
+        internal_token = tokenize.Token(_INTERNAL_TOKEN, _NAMESPACE_POP,
+                                        None, None)
+        internal_token.whence = token.whence
+        if token.name == '=':
+            # TODO(nnorwitz): handle aliasing namespaces.
+            name, next_token = self.GetName()
+            assert next_token.name == ';', next_token
+            self._AddBackToken(internal_token)
+        else:
+            assert token.name == '{', token
+            tokens = list(self.GetScope())
+            # Replace the trailing } with the internal namespace pop token.
+            tokens[-1] = internal_token
+            # Handle namespace with nothing in it.
+            self._AddBackTokens(tokens)
+        return None
+
+    def handle_using(self):
+        tokens = self._GetTokensUpTo(tokenize.SYNTAX, ';')
+        assert tokens
+        return Using(tokens[0].start, tokens[0].end, tokens)
+
+    def handle_explicit(self):
+        assert self.in_class
+        # Nothing much to do.
+        # TODO(nnorwitz): maybe verify the method name == class name.
+        # This must be a ctor.
+        return self.GetMethod(FUNCTION_CTOR, None)
+
+    def handle_this(self):
+        pass  # Nothing to do.
+
+    def handle_operator(self):
+        # Pull off the next token(s?) and make that part of the method name.
+        pass
+
+    def handle_sizeof(self):
+        pass
+
+    def handle_case(self):
+        pass
+
+    def handle_switch(self):
+        pass
+
+    def handle_default(self):
+        token = self._GetNextToken()
+        assert token.token_type == tokenize.SYNTAX
+        assert token.name == ':'
+
+    def handle_if(self):
+        pass
+
+    def handle_else(self):
+        pass
+
+    def handle_return(self):
+        tokens = self._GetTokensUpTo(tokenize.SYNTAX, ';')
+        if not tokens:
+            return Return(self.current_token.start, self.current_token.end, None)
+        return Return(tokens[0].start, tokens[0].end, tokens)
+
+    def handle_goto(self):
+        tokens = self._GetTokensUpTo(tokenize.SYNTAX, ';')
+        assert len(tokens) == 1, str(tokens)
+        return Goto(tokens[0].start, tokens[0].end, tokens[0].name)
+
+    def handle_try(self):
+        pass  # Not needed yet.
+
+    def handle_catch(self):
+        pass  # Not needed yet.
+
+    def handle_throw(self):
+        pass  # Not needed yet.
+
+    def handle_while(self):
+        pass
+
+    def handle_do(self):
+        pass
+
+    def handle_for(self):
+        pass
+
+    def handle_break(self):
+        self._IgnoreUpTo(tokenize.SYNTAX, ';')
+
+    def handle_continue(self):
+        self._IgnoreUpTo(tokenize.SYNTAX, ';')
+
+
+def BuilderFromSource(source, filename):
+    """Utility method that returns an AstBuilder from source code.
+
+    Args:
+      source: 'C++ source code'
+      filename: 'file1'
+
+    Returns:
+      AstBuilder
+    """
+    return AstBuilder(tokenize.GetTokens(source), filename)
+
+
+def PrintIndentifiers(filename, should_print):
+    """Prints all identifiers for a C++ source file.
+
+    Args:
+      filename: 'file1'
+      should_print: predicate with signature: bool Function(token)
+    """
+    source = utils.ReadFile(filename, False)
+    if source is None:
+        sys.stderr.write('Unable to find: %s\n' % filename)
+        return
+
+    #print('Processing %s' % actual_filename)
+    builder = BuilderFromSource(source, filename)
+    try:
+        for node in builder.Generate():
+            if should_print(node):
+                print(node.name)
+    except KeyboardInterrupt:
+        return
+    except:
+        pass
+
+
+def PrintAllIndentifiers(filenames, should_print):
+    """Prints all identifiers for each C++ source file in filenames.
+
+    Args:
+      filenames: ['file1', 'file2', ...]
+      should_print: predicate with signature: bool Function(token)
+    """
+    for path in filenames:
+        PrintIndentifiers(path, should_print)
+
+
+def main(argv):
+    for filename in argv[1:]:
+        source = utils.ReadFile(filename)
+        if source is None:
+            continue
+
+        print('Processing %s' % filename)
+        builder = BuilderFromSource(source, filename)
+        try:
+            entire_ast = filter(None, builder.Generate())
+        except KeyboardInterrupt:
+            return
+        except:
+            # Already printed a warning, print the traceback and continue.
+            traceback.print_exc()
+        else:
+            if utils.DEBUG:
+                for ast in entire_ast:
+                    print(ast)
+
+
+if __name__ == '__main__':
+    main(sys.argv)
diff --git a/build/_deps/googletest-src/googlemock/scripts/generator/cpp/gmock_class.py b/build/_deps/googletest-src/googlemock/scripts/generator/cpp/gmock_class.py
new file mode 100755
index 0000000000000000000000000000000000000000..f9966cbb4b0e17ede6eda2ca29e8ba7115394e15
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/generator/cpp/gmock_class.py
@@ -0,0 +1,227 @@
+#!/usr/bin/env python
+#
+# Copyright 2008 Google Inc.  All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Generate Google Mock classes from base classes.
+
+This program will read in a C++ source file and output the Google Mock
+classes for the specified classes.  If no class is specified, all
+classes in the source file are emitted.
+
+Usage:
+  gmock_class.py header-file.h [ClassName]...
+
+Output is sent to stdout.
+"""
+
+__author__ = 'nnorwitz@google.com (Neal Norwitz)'
+
+
+import os
+import re
+import sys
+
+from cpp import ast
+from cpp import utils
+
+# Preserve compatibility with Python 2.3.
+try:
+  _dummy = set
+except NameError:
+  import sets
+  set = sets.Set
+
+_VERSION = (1, 0, 1)  # The version of this script.
+# How many spaces to indent.  Can set me with the INDENT environment variable.
+_INDENT = 2
+
+
+def _GenerateMethods(output_lines, source, class_node):
+  function_type = (ast.FUNCTION_VIRTUAL | ast.FUNCTION_PURE_VIRTUAL |
+                   ast.FUNCTION_OVERRIDE)
+  ctor_or_dtor = ast.FUNCTION_CTOR | ast.FUNCTION_DTOR
+  indent = ' ' * _INDENT
+
+  for node in class_node.body:
+    # We only care about virtual functions.
+    if (isinstance(node, ast.Function) and
+        node.modifiers & function_type and
+        not node.modifiers & ctor_or_dtor):
+      # Pick out all the elements we need from the original function.
+      const = ''
+      if node.modifiers & ast.FUNCTION_CONST:
+        const = 'CONST_'
+      return_type = 'void'
+      if node.return_type:
+        # Add modifiers like 'const'.
+        modifiers = ''
+        if node.return_type.modifiers:
+          modifiers = ' '.join(node.return_type.modifiers) + ' '
+        return_type = modifiers + node.return_type.name
+        template_args = [arg.name for arg in node.return_type.templated_types]
+        if template_args:
+          return_type += '<' + ', '.join(template_args) + '>'
+          if len(template_args) > 1:
+            for line in [
+                '// The following line won\'t really compile, as the return',
+                '// type has multiple template arguments.  To fix it, use a',
+                '// typedef for the return type.']:
+              output_lines.append(indent + line)
+        if node.return_type.pointer:
+          return_type += '*'
+        if node.return_type.reference:
+          return_type += '&'
+        num_parameters = len(node.parameters)
+        if len(node.parameters) == 1:
+          first_param = node.parameters[0]
+          if source[first_param.start:first_param.end].strip() == 'void':
+            # We must treat T(void) as a function with no parameters.
+            num_parameters = 0
+      tmpl = ''
+      if class_node.templated_types:
+        tmpl = '_T'
+      mock_method_macro = 'MOCK_%sMETHOD%d%s' % (const, num_parameters, tmpl)
+
+      args = ''
+      if node.parameters:
+        # Due to the parser limitations, it is impossible to keep comments
+        # while stripping the default parameters.  When defaults are
+        # present, we choose to strip them and comments (and produce
+        # compilable code).
+        # TODO(nnorwitz@google.com): Investigate whether it is possible to
+        # preserve parameter name when reconstructing parameter text from
+        # the AST.
+        if len([param for param in node.parameters if param.default]) > 0:
+          args = ', '.join(param.type.name for param in node.parameters)
+        else:
+          # Get the full text of the parameters from the start
+          # of the first parameter to the end of the last parameter.
+          start = node.parameters[0].start
+          end = node.parameters[-1].end
+          # Remove // comments.
+          args_strings = re.sub(r'//.*', '', source[start:end])
+          # Condense multiple spaces and eliminate newlines putting the
+          # parameters together on a single line.  Ensure there is a
+          # space in an argument which is split by a newline without
+          # intervening whitespace, e.g.: int\nBar
+          args = re.sub('  +', ' ', args_strings.replace('\n', ' '))
+
+      # Create the mock method definition.
+      output_lines.extend(['%s%s(%s,' % (indent, mock_method_macro, node.name),
+                           '%s%s(%s));' % (indent*3, return_type, args)])
+
+
+def _GenerateMocks(filename, source, ast_list, desired_class_names):
+  processed_class_names = set()
+  lines = []
+  for node in ast_list:
+    if (isinstance(node, ast.Class) and node.body and
+        # desired_class_names being None means that all classes are selected.
+        (not desired_class_names or node.name in desired_class_names)):
+      class_name = node.name
+      parent_name = class_name
+      processed_class_names.add(class_name)
+      class_node = node
+      # Add namespace before the class.
+      if class_node.namespace:
+        lines.extend(['namespace %s {' % n for n in class_node.namespace])  # }
+        lines.append('')
+
+      # Add template args for templated classes.
+      if class_node.templated_types:
+        # TODO(paulchang): The AST doesn't preserve template argument order,
+        # so we have to make up names here.
+        # TODO(paulchang): Handle non-type template arguments (e.g.
+        # template<typename T, int N>).
+        template_arg_count = len(class_node.templated_types.keys())
+        template_args = ['T%d' % n for n in range(template_arg_count)]
+        template_decls = ['typename ' + arg for arg in template_args]
+        lines.append('template <' + ', '.join(template_decls) + '>')
+        parent_name += '<' + ', '.join(template_args) + '>'
+
+      # Add the class prolog.
+      lines.append('class Mock%s : public %s {'  # }
+                   % (class_name, parent_name))
+      lines.append('%spublic:' % (' ' * (_INDENT // 2)))
+
+      # Add all the methods.
+      _GenerateMethods(lines, source, class_node)
+
+      # Close the class.
+      if lines:
+        # If there are no virtual methods, no need for a public label.
+        if len(lines) == 2:
+          del lines[-1]
+
+        # Only close the class if there really is a class.
+        lines.append('};')
+        lines.append('')  # Add an extra newline.
+
+      # Close the namespace.
+      if class_node.namespace:
+        for i in range(len(class_node.namespace)-1, -1, -1):
+          lines.append('}  // namespace %s' % class_node.namespace[i])
+        lines.append('')  # Add an extra newline.
+
+  if desired_class_names:
+    missing_class_name_list = list(desired_class_names - processed_class_names)
+    if missing_class_name_list:
+      missing_class_name_list.sort()
+      sys.stderr.write('Class(es) not found in %s: %s\n' %
+                       (filename, ', '.join(missing_class_name_list)))
+  elif not processed_class_names:
+    sys.stderr.write('No class found in %s\n' % filename)
+
+  return lines
+
+
+def main(argv=sys.argv):
+  if len(argv) < 2:
+    sys.stderr.write('Google Mock Class Generator v%s\n\n' %
+                     '.'.join(map(str, _VERSION)))
+    sys.stderr.write(__doc__)
+    return 1
+
+  global _INDENT
+  try:
+    _INDENT = int(os.environ['INDENT'])
+  except KeyError:
+    pass
+  except:
+    sys.stderr.write('Unable to use indent of %s\n' % os.environ.get('INDENT'))
+
+  filename = argv[1]
+  desired_class_names = None  # None means all classes in the source file.
+  if len(argv) >= 3:
+    desired_class_names = set(argv[2:])
+  source = utils.ReadFile(filename)
+  if source is None:
+    return 1
+
+  builder = ast.BuilderFromSource(source, filename)
+  try:
+    entire_ast = filter(None, builder.Generate())
+  except KeyboardInterrupt:
+    return
+  except:
+    # An error message was already printed since we couldn't parse.
+    sys.exit(1)
+  else:
+    lines = _GenerateMocks(filename, source, entire_ast, desired_class_names)
+    sys.stdout.write('\n'.join(lines))
+
+
+if __name__ == '__main__':
+  main(sys.argv)
diff --git a/build/_deps/googletest-src/googlemock/scripts/generator/cpp/gmock_class_test.py b/build/_deps/googletest-src/googlemock/scripts/generator/cpp/gmock_class_test.py
new file mode 100755
index 0000000000000000000000000000000000000000..c53e60003e1ced91400df97d78560e43bf447377
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/generator/cpp/gmock_class_test.py
@@ -0,0 +1,466 @@
+#!/usr/bin/env python
+#
+# Copyright 2009 Neal Norwitz All Rights Reserved.
+# Portions Copyright 2009 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Tests for gmock.scripts.generator.cpp.gmock_class."""
+
+__author__ = 'nnorwitz@google.com (Neal Norwitz)'
+
+
+import os
+import sys
+import unittest
+
+# Allow the cpp imports below to work when run as a standalone script.
+sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
+
+from cpp import ast
+from cpp import gmock_class
+
+
+class TestCase(unittest.TestCase):
+  """Helper class that adds assert methods."""
+
+  def StripLeadingWhitespace(self, lines):
+    """Strip leading whitespace in each line in 'lines'."""
+    return '\n'.join([s.lstrip() for s in lines.split('\n')])
+
+  def assertEqualIgnoreLeadingWhitespace(self, expected_lines, lines):
+    """Specialized assert that ignores the indent level."""
+    self.assertEqual(expected_lines, self.StripLeadingWhitespace(lines))
+
+
+class GenerateMethodsTest(TestCase):
+
+  def GenerateMethodSource(self, cpp_source):
+    """Convert C++ source to Google Mock output source lines."""
+    method_source_lines = []
+    # <test> is a pseudo-filename, it is not read or written.
+    builder = ast.BuilderFromSource(cpp_source, '<test>')
+    ast_list = list(builder.Generate())
+    gmock_class._GenerateMethods(method_source_lines, cpp_source, ast_list[0])
+    return '\n'.join(method_source_lines)
+
+  def testSimpleMethod(self):
+    source = """
+class Foo {
+ public:
+  virtual int Bar();
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD0(Bar,\nint());',
+        self.GenerateMethodSource(source))
+
+  def testSimpleConstructorsAndDestructor(self):
+    source = """
+class Foo {
+ public:
+  Foo();
+  Foo(int x);
+  Foo(const Foo& f);
+  Foo(Foo&& f);
+  ~Foo();
+  virtual int Bar() = 0;
+};
+"""
+    # The constructors and destructor should be ignored.
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD0(Bar,\nint());',
+        self.GenerateMethodSource(source))
+
+  def testVirtualDestructor(self):
+    source = """
+class Foo {
+ public:
+  virtual ~Foo();
+  virtual int Bar() = 0;
+};
+"""
+    # The destructor should be ignored.
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD0(Bar,\nint());',
+        self.GenerateMethodSource(source))
+
+  def testExplicitlyDefaultedConstructorsAndDestructor(self):
+    source = """
+class Foo {
+ public:
+  Foo() = default;
+  Foo(const Foo& f) = default;
+  Foo(Foo&& f) = default;
+  ~Foo() = default;
+  virtual int Bar() = 0;
+};
+"""
+    # The constructors and destructor should be ignored.
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD0(Bar,\nint());',
+        self.GenerateMethodSource(source))
+
+  def testExplicitlyDeletedConstructorsAndDestructor(self):
+    source = """
+class Foo {
+ public:
+  Foo() = delete;
+  Foo(const Foo& f) = delete;
+  Foo(Foo&& f) = delete;
+  ~Foo() = delete;
+  virtual int Bar() = 0;
+};
+"""
+    # The constructors and destructor should be ignored.
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD0(Bar,\nint());',
+        self.GenerateMethodSource(source))
+
+  def testSimpleOverrideMethod(self):
+    source = """
+class Foo {
+ public:
+  int Bar() override;
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD0(Bar,\nint());',
+        self.GenerateMethodSource(source))
+
+  def testSimpleConstMethod(self):
+    source = """
+class Foo {
+ public:
+  virtual void Bar(bool flag) const;
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_CONST_METHOD1(Bar,\nvoid(bool flag));',
+        self.GenerateMethodSource(source))
+
+  def testExplicitVoid(self):
+    source = """
+class Foo {
+ public:
+  virtual int Bar(void);
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD0(Bar,\nint(void));',
+        self.GenerateMethodSource(source))
+
+  def testStrangeNewlineInParameter(self):
+    source = """
+class Foo {
+ public:
+  virtual void Bar(int
+a) = 0;
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD1(Bar,\nvoid(int a));',
+        self.GenerateMethodSource(source))
+
+  def testDefaultParameters(self):
+    source = """
+class Foo {
+ public:
+  virtual void Bar(int a, char c = 'x') = 0;
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD2(Bar,\nvoid(int, char));',
+        self.GenerateMethodSource(source))
+
+  def testMultipleDefaultParameters(self):
+    source = """
+class Foo {
+ public:
+  virtual void Bar(int a = 42, char c = 'x') = 0;
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD2(Bar,\nvoid(int, char));',
+        self.GenerateMethodSource(source))
+
+  def testRemovesCommentsWhenDefaultsArePresent(self):
+    source = """
+class Foo {
+ public:
+  virtual void Bar(int a = 42 /* a comment */,
+                   char /* other comment */ c= 'x') = 0;
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD2(Bar,\nvoid(int, char));',
+        self.GenerateMethodSource(source))
+
+  def testDoubleSlashCommentsInParameterListAreRemoved(self):
+    source = """
+class Foo {
+ public:
+  virtual void Bar(int a,  // inline comments should be elided.
+                   int b   // inline comments should be elided.
+                   ) const = 0;
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_CONST_METHOD2(Bar,\nvoid(int a, int b));',
+        self.GenerateMethodSource(source))
+
+  def testCStyleCommentsInParameterListAreNotRemoved(self):
+    # NOTE(nnorwitz): I'm not sure if it's the best behavior to keep these
+    # comments.  Also note that C style comments after the last parameter
+    # are still elided.
+    source = """
+class Foo {
+ public:
+  virtual const string& Bar(int /* keeper */, int b);
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD2(Bar,\nconst string&(int /* keeper */, int b));',
+        self.GenerateMethodSource(source))
+
+  def testArgsOfTemplateTypes(self):
+    source = """
+class Foo {
+ public:
+  virtual int Bar(const vector<int>& v, map<int, string>* output);
+};"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD2(Bar,\n'
+        'int(const vector<int>& v, map<int, string>* output));',
+        self.GenerateMethodSource(source))
+
+  def testReturnTypeWithOneTemplateArg(self):
+    source = """
+class Foo {
+ public:
+  virtual vector<int>* Bar(int n);
+};"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD1(Bar,\nvector<int>*(int n));',
+        self.GenerateMethodSource(source))
+
+  def testReturnTypeWithManyTemplateArgs(self):
+    source = """
+class Foo {
+ public:
+  virtual map<int, string> Bar();
+};"""
+    # Comparing the comment text is brittle - we'll think of something
+    # better in case this gets annoying, but for now let's keep it simple.
+    self.assertEqualIgnoreLeadingWhitespace(
+        '// The following line won\'t really compile, as the return\n'
+        '// type has multiple template arguments.  To fix it, use a\n'
+        '// typedef for the return type.\n'
+        'MOCK_METHOD0(Bar,\nmap<int, string>());',
+        self.GenerateMethodSource(source))
+
+  def testSimpleMethodInTemplatedClass(self):
+    source = """
+template<class T>
+class Foo {
+ public:
+  virtual int Bar();
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD0_T(Bar,\nint());',
+        self.GenerateMethodSource(source))
+
+  def testPointerArgWithoutNames(self):
+    source = """
+class Foo {
+  virtual int Bar(C*);
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD1(Bar,\nint(C*));',
+        self.GenerateMethodSource(source))
+
+  def testReferenceArgWithoutNames(self):
+    source = """
+class Foo {
+  virtual int Bar(C&);
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD1(Bar,\nint(C&));',
+        self.GenerateMethodSource(source))
+
+  def testArrayArgWithoutNames(self):
+    source = """
+class Foo {
+  virtual int Bar(C[]);
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        'MOCK_METHOD1(Bar,\nint(C[]));',
+        self.GenerateMethodSource(source))
+
+
+class GenerateMocksTest(TestCase):
+
+  def GenerateMocks(self, cpp_source):
+    """Convert C++ source to complete Google Mock output source."""
+    # <test> is a pseudo-filename, it is not read or written.
+    filename = '<test>'
+    builder = ast.BuilderFromSource(cpp_source, filename)
+    ast_list = list(builder.Generate())
+    lines = gmock_class._GenerateMocks(filename, cpp_source, ast_list, None)
+    return '\n'.join(lines)
+
+  def testNamespaces(self):
+    source = """
+namespace Foo {
+namespace Bar { class Forward; }
+namespace Baz {
+
+class Test {
+ public:
+  virtual void Foo();
+};
+
+}  // namespace Baz
+}  // namespace Foo
+"""
+    expected = """\
+namespace Foo {
+namespace Baz {
+
+class MockTest : public Test {
+public:
+MOCK_METHOD0(Foo,
+void());
+};
+
+}  // namespace Baz
+}  // namespace Foo
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        expected, self.GenerateMocks(source))
+
+  def testClassWithStorageSpecifierMacro(self):
+    source = """
+class STORAGE_SPECIFIER Test {
+ public:
+  virtual void Foo();
+};
+"""
+    expected = """\
+class MockTest : public Test {
+public:
+MOCK_METHOD0(Foo,
+void());
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        expected, self.GenerateMocks(source))
+
+  def testTemplatedForwardDeclaration(self):
+    source = """
+template <class T> class Forward;  // Forward declaration should be ignored.
+class Test {
+ public:
+  virtual void Foo();
+};
+"""
+    expected = """\
+class MockTest : public Test {
+public:
+MOCK_METHOD0(Foo,
+void());
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        expected, self.GenerateMocks(source))
+
+  def testTemplatedClass(self):
+    source = """
+template <typename S, typename T>
+class Test {
+ public:
+  virtual void Foo();
+};
+"""
+    expected = """\
+template <typename T0, typename T1>
+class MockTest : public Test<T0, T1> {
+public:
+MOCK_METHOD0_T(Foo,
+void());
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        expected, self.GenerateMocks(source))
+
+  def testTemplateInATemplateTypedef(self):
+    source = """
+class Test {
+ public:
+  typedef std::vector<std::list<int>> FooType;
+  virtual void Bar(const FooType& test_arg);
+};
+"""
+    expected = """\
+class MockTest : public Test {
+public:
+MOCK_METHOD1(Bar,
+void(const FooType& test_arg));
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        expected, self.GenerateMocks(source))
+
+  def testTemplateInATemplateTypedefWithComma(self):
+    source = """
+class Test {
+ public:
+  typedef std::function<void(
+      const vector<std::list<int>>&, int> FooType;
+  virtual void Bar(const FooType& test_arg);
+};
+"""
+    expected = """\
+class MockTest : public Test {
+public:
+MOCK_METHOD1(Bar,
+void(const FooType& test_arg));
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        expected, self.GenerateMocks(source))
+
+  def testEnumClass(self):
+    source = """
+class Test {
+ public:
+  enum class Baz { BAZINGA };
+  virtual void Bar(const FooType& test_arg);
+};
+"""
+    expected = """\
+class MockTest : public Test {
+public:
+MOCK_METHOD1(Bar,
+void(const FooType& test_arg));
+};
+"""
+    self.assertEqualIgnoreLeadingWhitespace(
+        expected, self.GenerateMocks(source))
+
+if __name__ == '__main__':
+  unittest.main()
diff --git a/build/_deps/googletest-src/googlemock/scripts/generator/cpp/keywords.py b/build/_deps/googletest-src/googlemock/scripts/generator/cpp/keywords.py
new file mode 100755
index 0000000000000000000000000000000000000000..f694450e373e191b6d5d87caba46ea7371f00eef
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/generator/cpp/keywords.py
@@ -0,0 +1,59 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 Neal Norwitz
+# Portions Copyright 2007 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""C++ keywords and helper utilities for determining keywords."""
+
+__author__ = 'nnorwitz@google.com (Neal Norwitz)'
+
+
+try:
+    # Python 3.x
+    import builtins
+except ImportError:
+    # Python 2.x
+    import __builtin__ as builtins
+
+
+if not hasattr(builtins, 'set'):
+    # Nominal support for Python 2.3.
+    from sets import Set as set
+
+
+TYPES = set('bool char int long short double float void wchar_t unsigned signed'.split())
+TYPE_MODIFIERS = set('auto register const inline extern static virtual volatile mutable'.split())
+ACCESS = set('public protected private friend'.split())
+
+CASTS = set('static_cast const_cast dynamic_cast reinterpret_cast'.split())
+
+OTHERS = set('true false asm class namespace using explicit this operator sizeof'.split())
+OTHER_TYPES = set('new delete typedef struct union enum typeid typename template'.split())
+
+CONTROL = set('case switch default if else return goto'.split())
+EXCEPTION = set('try catch throw'.split())
+LOOP = set('while do for break continue'.split())
+
+ALL = TYPES | TYPE_MODIFIERS | ACCESS | CASTS | OTHERS | OTHER_TYPES | CONTROL | EXCEPTION | LOOP
+
+
+def IsKeyword(token):
+    return token in ALL
+
+def IsBuiltinType(token):
+    if token in ('virtual', 'inline'):
+        # These only apply to methods, they can't be types by themselves.
+        return False
+    return token in TYPES or token in TYPE_MODIFIERS
diff --git a/build/_deps/googletest-src/googlemock/scripts/generator/cpp/tokenize.py b/build/_deps/googletest-src/googlemock/scripts/generator/cpp/tokenize.py
new file mode 100755
index 0000000000000000000000000000000000000000..359d5562d78cf92abafdd2b9f1ef64ef05f547bd
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/generator/cpp/tokenize.py
@@ -0,0 +1,287 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 Neal Norwitz
+# Portions Copyright 2007 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Tokenize C++ source code."""
+
+__author__ = 'nnorwitz@google.com (Neal Norwitz)'
+
+
+try:
+    # Python 3.x
+    import builtins
+except ImportError:
+    # Python 2.x
+    import __builtin__ as builtins
+
+
+import sys
+
+from cpp import utils
+
+
+if not hasattr(builtins, 'set'):
+    # Nominal support for Python 2.3.
+    from sets import Set as set
+
+
+# Add $ as a valid identifier char since so much code uses it.
+_letters = 'abcdefghijklmnopqrstuvwxyz'
+VALID_IDENTIFIER_CHARS = set(_letters + _letters.upper() + '_0123456789$')
+HEX_DIGITS = set('0123456789abcdefABCDEF')
+INT_OR_FLOAT_DIGITS = set('01234567890eE-+')
+
+
+# C++0x string preffixes.
+_STR_PREFIXES = set(('R', 'u8', 'u8R', 'u', 'uR', 'U', 'UR', 'L', 'LR'))
+
+
+# Token types.
+UNKNOWN = 'UNKNOWN'
+SYNTAX = 'SYNTAX'
+CONSTANT = 'CONSTANT'
+NAME = 'NAME'
+PREPROCESSOR = 'PREPROCESSOR'
+
+# Where the token originated from.  This can be used for backtracking.
+# It is always set to WHENCE_STREAM in this code.
+WHENCE_STREAM, WHENCE_QUEUE = range(2)
+
+
+class Token(object):
+    """Data container to represent a C++ token.
+
+    Tokens can be identifiers, syntax char(s), constants, or
+    pre-processor directives.
+
+    start contains the index of the first char of the token in the source
+    end contains the index of the last char of the token in the source
+    """
+
+    def __init__(self, token_type, name, start, end):
+        self.token_type = token_type
+        self.name = name
+        self.start = start
+        self.end = end
+        self.whence = WHENCE_STREAM
+
+    def __str__(self):
+        if not utils.DEBUG:
+            return 'Token(%r)' % self.name
+        return 'Token(%r, %s, %s)' % (self.name, self.start, self.end)
+
+    __repr__ = __str__
+
+
+def _GetString(source, start, i):
+    i = source.find('"', i+1)
+    while source[i-1] == '\\':
+        # Count the trailing backslashes.
+        backslash_count = 1
+        j = i - 2
+        while source[j] == '\\':
+            backslash_count += 1
+            j -= 1
+        # When trailing backslashes are even, they escape each other.
+        if (backslash_count % 2) == 0:
+            break
+        i = source.find('"', i+1)
+    return i + 1
+
+
+def _GetChar(source, start, i):
+    # NOTE(nnorwitz): may not be quite correct, should be good enough.
+    i = source.find("'", i+1)
+    while source[i-1] == '\\':
+        # Need to special case '\\'.
+        if (i - 2) > start and source[i-2] == '\\':
+            break
+        i = source.find("'", i+1)
+    # Try to handle unterminated single quotes (in a #if 0 block).
+    if i < 0:
+        i = start
+    return i + 1
+
+
+def GetTokens(source):
+    """Returns a sequence of Tokens.
+
+    Args:
+      source: string of C++ source code.
+
+    Yields:
+      Token that represents the next token in the source.
+    """
+    # Cache various valid character sets for speed.
+    valid_identifier_chars = VALID_IDENTIFIER_CHARS
+    hex_digits = HEX_DIGITS
+    int_or_float_digits = INT_OR_FLOAT_DIGITS
+    int_or_float_digits2 = int_or_float_digits | set('.')
+
+    # Only ignore errors while in a #if 0 block.
+    ignore_errors = False
+    count_ifs = 0
+
+    i = 0
+    end = len(source)
+    while i < end:
+        # Skip whitespace.
+        while i < end and source[i].isspace():
+            i += 1
+        if i >= end:
+            return
+
+        token_type = UNKNOWN
+        start = i
+        c = source[i]
+        if c.isalpha() or c == '_':              # Find a string token.
+            token_type = NAME
+            while source[i] in valid_identifier_chars:
+                i += 1
+            # String and character constants can look like a name if
+            # they are something like L"".
+            if (source[i] == "'" and (i - start) == 1 and
+                source[start:i] in 'uUL'):
+                # u, U, and L are valid C++0x character preffixes.
+                token_type = CONSTANT
+                i = _GetChar(source, start, i)
+            elif source[i] == "'" and source[start:i] in _STR_PREFIXES:
+                token_type = CONSTANT
+                i = _GetString(source, start, i)
+        elif c == '/' and source[i+1] == '/':    # Find // comments.
+            i = source.find('\n', i)
+            if i == -1:  # Handle EOF.
+                i = end
+            continue
+        elif c == '/' and source[i+1] == '*':    # Find /* comments. */
+            i = source.find('*/', i) + 2
+            continue
+        elif c in ':+-<>&|*=':                   # : or :: (plus other chars).
+            token_type = SYNTAX
+            i += 1
+            new_ch = source[i]
+            if new_ch == c and c != '>':         # Treat ">>" as two tokens.
+                i += 1
+            elif c == '-' and new_ch == '>':
+                i += 1
+            elif new_ch == '=':
+                i += 1
+        elif c in '()[]{}~!?^%;/.,':             # Handle single char tokens.
+            token_type = SYNTAX
+            i += 1
+            if c == '.' and source[i].isdigit():
+                token_type = CONSTANT
+                i += 1
+                while source[i] in int_or_float_digits:
+                    i += 1
+                # Handle float suffixes.
+                for suffix in ('l', 'f'):
+                    if suffix == source[i:i+1].lower():
+                        i += 1
+                        break
+        elif c.isdigit():                        # Find integer.
+            token_type = CONSTANT
+            if c == '0' and source[i+1] in 'xX':
+                # Handle hex digits.
+                i += 2
+                while source[i] in hex_digits:
+                    i += 1
+            else:
+                while source[i] in int_or_float_digits2:
+                    i += 1
+            # Handle integer (and float) suffixes.
+            for suffix in ('ull', 'll', 'ul', 'l', 'f', 'u'):
+                size = len(suffix)
+                if suffix == source[i:i+size].lower():
+                    i += size
+                    break
+        elif c == '"':                           # Find string.
+            token_type = CONSTANT
+            i = _GetString(source, start, i)
+        elif c == "'":                           # Find char.
+            token_type = CONSTANT
+            i = _GetChar(source, start, i)
+        elif c == '#':                           # Find pre-processor command.
+            token_type = PREPROCESSOR
+            got_if = source[i:i+3] == '#if' and source[i+3:i+4].isspace()
+            if got_if:
+                count_ifs += 1
+            elif source[i:i+6] == '#endif':
+                count_ifs -= 1
+                if count_ifs == 0:
+                    ignore_errors = False
+
+            # TODO(nnorwitz): handle preprocessor statements (\ continuations).
+            while 1:
+                i1 = source.find('\n', i)
+                i2 = source.find('//', i)
+                i3 = source.find('/*', i)
+                i4 = source.find('"', i)
+                # NOTE(nnorwitz): doesn't handle comments in #define macros.
+                # Get the first important symbol (newline, comment, EOF/end).
+                i = min([x for x in (i1, i2, i3, i4, end) if x != -1])
+
+                # Handle #include "dir//foo.h" properly.
+                if source[i] == '"':
+                    i = source.find('"', i+1) + 1
+                    assert i > 0
+                    continue
+                # Keep going if end of the line and the line ends with \.
+                if not (i == i1 and source[i-1] == '\\'):
+                    if got_if:
+                        condition = source[start+4:i].lstrip()
+                        if (condition.startswith('0') or
+                            condition.startswith('(0)')):
+                            ignore_errors = True
+                    break
+                i += 1
+        elif c == '\\':                          # Handle \ in code.
+            # This is different from the pre-processor \ handling.
+            i += 1
+            continue
+        elif ignore_errors:
+            # The tokenizer seems to be in pretty good shape.  This
+            # raise is conditionally disabled so that bogus code
+            # in an #if 0 block can be handled.  Since we will ignore
+            # it anyways, this is probably fine.  So disable the
+            # exception and  return the bogus char.
+            i += 1
+        else:
+            sys.stderr.write('Got invalid token in %s @ %d token:%s: %r\n' %
+                             ('?', i, c, source[i-10:i+10]))
+            raise RuntimeError('unexpected token')
+
+        if i <= 0:
+            print('Invalid index, exiting now.')
+            return
+        yield Token(token_type, source[start:i], start, i)
+
+
+if __name__ == '__main__':
+    def main(argv):
+        """Driver mostly for testing purposes."""
+        for filename in argv[1:]:
+            source = utils.ReadFile(filename)
+            if source is None:
+                continue
+
+            for token in GetTokens(source):
+                print('%-12s: %s' % (token.token_type, token.name))
+                # print('\r%6.2f%%' % (100.0 * index / token.end),)
+            sys.stdout.write('\n')
+
+
+    main(sys.argv)
diff --git a/build/_deps/googletest-src/googlemock/scripts/generator/cpp/utils.py b/build/_deps/googletest-src/googlemock/scripts/generator/cpp/utils.py
new file mode 100755
index 0000000000000000000000000000000000000000..eab36eec335ebaa603051b7bc5186c87a8f78f81
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/generator/cpp/utils.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 Neal Norwitz
+# Portions Copyright 2007 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Generic utilities for C++ parsing."""
+
+__author__ = 'nnorwitz@google.com (Neal Norwitz)'
+
+
+import sys
+
+
+# Set to True to see the start/end token indices.
+DEBUG = True
+
+
+def ReadFile(filename, print_error=True):
+    """Returns the contents of a file."""
+    try:
+        fp = open(filename)
+        try:
+            return fp.read()
+        finally:
+            fp.close()
+    except IOError:
+        if print_error:
+            print('Error reading %s: %s' % (filename, sys.exc_info()[1]))
+        return None
diff --git a/build/_deps/googletest-src/googlemock/scripts/generator/gmock_gen.py b/build/_deps/googletest-src/googlemock/scripts/generator/gmock_gen.py
new file mode 100755
index 0000000000000000000000000000000000000000..8cc0d135d6f2d9a3e4affc3ea1a0994697b65388
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/generator/gmock_gen.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+#
+# Copyright 2008 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Driver for starting up Google Mock class generator."""
+
+__author__ = 'nnorwitz@google.com (Neal Norwitz)'
+
+import os
+import sys
+
+if __name__ == '__main__':
+  # Add the directory of this script to the path so we can import gmock_class.
+  sys.path.append(os.path.dirname(__file__))
+
+  from cpp import gmock_class
+  # Fix the docstring in case they require the usage.
+  gmock_class.__doc__ = gmock_class.__doc__.replace('gmock_class.py', __file__)
+  gmock_class.main()
diff --git a/build/_deps/googletest-src/googlemock/scripts/gmock-config.in b/build/_deps/googletest-src/googlemock/scripts/gmock-config.in
new file mode 100755
index 0000000000000000000000000000000000000000..2baefe94d6fb9e01153db9b60f1c71e3f2c0a73b
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/gmock-config.in
@@ -0,0 +1,303 @@
+#!/bin/sh
+
+# These variables are automatically filled in by the configure script.
+name="@PACKAGE_TARNAME@"
+version="@PACKAGE_VERSION@"
+
+show_usage()
+{
+  echo "Usage: gmock-config [OPTIONS...]"
+}
+
+show_help()
+{
+  show_usage
+  cat <<\EOF
+
+The `gmock-config' script provides access to the necessary compile and linking
+flags to connect with Google C++ Mocking Framework, both in a build prior to
+installation, and on the system proper after installation. The installation
+overrides may be issued in combination with any other queries, but will only
+affect installation queries if called on a built but not installed gmock. The
+installation queries may not be issued with any other types of queries, and
+only one installation query may be made at a time. The version queries and
+compiler flag queries may be combined as desired but not mixed. Different
+version queries are always combined with logical "and" semantics, and only the
+last of any particular query is used while all previous ones ignored. All
+versions must be specified as a sequence of numbers separated by periods.
+Compiler flag queries output the union of the sets of flags when combined.
+
+ Examples:
+  gmock-config --min-version=1.0 || echo "Insufficient Google Mock version."
+
+  g++ $(gmock-config --cppflags --cxxflags) -o foo.o -c foo.cpp
+  g++ $(gmock-config --ldflags --libs) -o foo foo.o
+
+  # When using a built but not installed Google Mock:
+  g++ $(../../my_gmock_build/scripts/gmock-config ...) ...
+
+  # When using an installed Google Mock, but with installation overrides:
+  export GMOCK_PREFIX="/opt"
+  g++ $(gmock-config --libdir="/opt/lib64" ...) ...
+
+ Help:
+  --usage                    brief usage information
+  --help                     display this help message
+
+ Installation Overrides:
+  --prefix=<dir>             overrides the installation prefix
+  --exec-prefix=<dir>        overrides the executable installation prefix
+  --libdir=<dir>             overrides the library installation prefix
+  --includedir=<dir>         overrides the header file installation prefix
+
+ Installation Queries:
+  --prefix                   installation prefix
+  --exec-prefix              executable installation prefix
+  --libdir                   library installation directory
+  --includedir               header file installation directory
+  --version                  the version of the Google Mock installation
+
+ Version Queries:
+  --min-version=VERSION      return 0 if the version is at least VERSION
+  --exact-version=VERSION    return 0 if the version is exactly VERSION
+  --max-version=VERSION      return 0 if the version is at most VERSION
+
+ Compilation Flag Queries:
+  --cppflags                 compile flags specific to the C-like preprocessors
+  --cxxflags                 compile flags appropriate for C++ programs
+  --ldflags                  linker flags
+  --libs                     libraries for linking
+
+EOF
+}
+
+# This function bounds our version with a min and a max. It uses some clever
+# POSIX-compliant variable expansion to portably do all the work in the shell
+# and avoid any dependency on a particular "sed" or "awk" implementation.
+# Notable is that it will only ever compare the first 3 components of versions.
+# Further components will be cleanly stripped off. All versions must be
+# unadorned, so "v1.0" will *not* work. The minimum version must be in $1, and
+# the max in $2. TODO(chandlerc@google.com): If this ever breaks, we should
+# investigate expanding this via autom4te from AS_VERSION_COMPARE rather than
+# continuing to maintain our own shell version.
+check_versions()
+{
+  major_version=${version%%.*}
+  minor_version="0"
+  point_version="0"
+  if test "${version#*.}" != "${version}"; then
+    minor_version=${version#*.}
+    minor_version=${minor_version%%.*}
+  fi
+  if test "${version#*.*.}" != "${version}"; then
+    point_version=${version#*.*.}
+    point_version=${point_version%%.*}
+  fi
+
+  min_version="$1"
+  min_major_version=${min_version%%.*}
+  min_minor_version="0"
+  min_point_version="0"
+  if test "${min_version#*.}" != "${min_version}"; then
+    min_minor_version=${min_version#*.}
+    min_minor_version=${min_minor_version%%.*}
+  fi
+  if test "${min_version#*.*.}" != "${min_version}"; then
+    min_point_version=${min_version#*.*.}
+    min_point_version=${min_point_version%%.*}
+  fi
+
+  max_version="$2"
+  max_major_version=${max_version%%.*}
+  max_minor_version="0"
+  max_point_version="0"
+  if test "${max_version#*.}" != "${max_version}"; then
+    max_minor_version=${max_version#*.}
+    max_minor_version=${max_minor_version%%.*}
+  fi
+  if test "${max_version#*.*.}" != "${max_version}"; then
+    max_point_version=${max_version#*.*.}
+    max_point_version=${max_point_version%%.*}
+  fi
+
+  test $(($major_version)) -lt $(($min_major_version)) && exit 1
+  if test $(($major_version)) -eq $(($min_major_version)); then
+    test $(($minor_version)) -lt $(($min_minor_version)) && exit 1
+    if test $(($minor_version)) -eq $(($min_minor_version)); then
+      test $(($point_version)) -lt $(($min_point_version)) && exit 1
+    fi
+  fi
+
+  test $(($major_version)) -gt $(($max_major_version)) && exit 1
+  if test $(($major_version)) -eq $(($max_major_version)); then
+    test $(($minor_version)) -gt $(($max_minor_version)) && exit 1
+    if test $(($minor_version)) -eq $(($max_minor_version)); then
+      test $(($point_version)) -gt $(($max_point_version)) && exit 1
+    fi
+  fi
+
+  exit 0
+}
+
+# Show the usage line when no arguments are specified.
+if test $# -eq 0; then
+  show_usage
+  exit 1
+fi
+
+while test $# -gt 0; do
+  case $1 in
+    --usage)          show_usage;         exit 0;;
+    --help)           show_help;          exit 0;;
+
+    # Installation overrides
+    --prefix=*)       GMOCK_PREFIX=${1#--prefix=};;
+    --exec-prefix=*)  GMOCK_EXEC_PREFIX=${1#--exec-prefix=};;
+    --libdir=*)       GMOCK_LIBDIR=${1#--libdir=};;
+    --includedir=*)   GMOCK_INCLUDEDIR=${1#--includedir=};;
+
+    # Installation queries
+    --prefix|--exec-prefix|--libdir|--includedir|--version)
+      if test -n "${do_query}"; then
+        show_usage
+        exit 1
+      fi
+      do_query=${1#--}
+      ;;
+
+    # Version checking
+    --min-version=*)
+      do_check_versions=yes
+      min_version=${1#--min-version=}
+      ;;
+    --max-version=*)
+      do_check_versions=yes
+      max_version=${1#--max-version=}
+      ;;
+    --exact-version=*)
+      do_check_versions=yes
+      exact_version=${1#--exact-version=}
+      ;;
+
+    # Compiler flag output
+    --cppflags)       echo_cppflags=yes;;
+    --cxxflags)       echo_cxxflags=yes;;
+    --ldflags)        echo_ldflags=yes;;
+    --libs)           echo_libs=yes;;
+
+    # Everything else is an error
+    *)                show_usage;         exit 1;;
+  esac
+  shift
+done
+
+# These have defaults filled in by the configure script but can also be
+# overridden by environment variables or command line parameters.
+prefix="${GMOCK_PREFIX:-@prefix@}"
+exec_prefix="${GMOCK_EXEC_PREFIX:-@exec_prefix@}"
+libdir="${GMOCK_LIBDIR:-@libdir@}"
+includedir="${GMOCK_INCLUDEDIR:-@includedir@}"
+
+# We try and detect if our binary is not located at its installed location. If
+# it's not, we provide variables pointing to the source and build tree rather
+# than to the install tree. We also locate Google Test using the configured
+# gtest-config script rather than searching the PATH and our bindir for one.
+# This allows building against a just-built gmock rather than an installed
+# gmock.
+bindir="@bindir@"
+this_relative_bindir=`dirname $0`
+this_bindir=`cd ${this_relative_bindir}; pwd -P`
+if test "${this_bindir}" = "${this_bindir%${bindir}}"; then
+  # The path to the script doesn't end in the bindir sequence from Autoconf,
+  # assume that we are in a build tree.
+  build_dir=`dirname ${this_bindir}`
+  src_dir=`cd ${this_bindir}/@top_srcdir@; pwd -P`
+
+  # TODO(chandlerc@google.com): This is a dangerous dependency on libtool, we
+  # should work to remove it, and/or remove libtool altogether, replacing it
+  # with direct references to the library and a link path.
+  gmock_libs="${build_dir}/lib/libgmock.la"
+  gmock_ldflags=""
+
+  # We provide hooks to include from either the source or build dir, where the
+  # build dir is always preferred. This will potentially allow us to write
+  # build rules for generated headers and have them automatically be preferred
+  # over provided versions.
+  gmock_cppflags="-I${build_dir}/include -I${src_dir}/include"
+  gmock_cxxflags=""
+
+  # Directly invoke the gtest-config script used during the build process.
+  gtest_config="@GTEST_CONFIG@"
+else
+  # We're using an installed gmock, although it may be staged under some
+  # prefix. Assume (as our own libraries do) that we can resolve the prefix,
+  # and are present in the dynamic link paths.
+  gmock_ldflags="-L${libdir}"
+  gmock_libs="-l${name}"
+  gmock_cppflags="-I${includedir}"
+  gmock_cxxflags=""
+
+  # We also prefer any gtest-config script installed in our prefix. Lacking
+  # one, we look in the PATH for one.
+  gtest_config="${bindir}/gtest-config"
+  if test ! -x "${gtest_config}"; then
+    gtest_config=`which gtest-config`
+  fi
+fi
+
+# Ensure that we have located a Google Test to link against.
+if ! test -x "${gtest_config}"; then
+  echo "Unable to locate Google Test, check your Google Mock configuration" \
+       "and installation" >&2
+  exit 1
+elif ! "${gtest_config}" "--exact-version=@GTEST_VERSION@"; then
+  echo "The Google Test found is not the same version as Google Mock was " \
+       "built against" >&2
+  exit 1
+fi
+
+# Add the necessary Google Test bits into the various flag variables
+gmock_cppflags="${gmock_cppflags} `${gtest_config} --cppflags`"
+gmock_cxxflags="${gmock_cxxflags} `${gtest_config} --cxxflags`"
+gmock_ldflags="${gmock_ldflags} `${gtest_config} --ldflags`"
+gmock_libs="${gmock_libs} `${gtest_config} --libs`"
+
+# Do an installation query if requested.
+if test -n "$do_query"; then
+  case $do_query in
+    prefix)           echo $prefix;       exit 0;;
+    exec-prefix)      echo $exec_prefix;  exit 0;;
+    libdir)           echo $libdir;       exit 0;;
+    includedir)       echo $includedir;   exit 0;;
+    version)          echo $version;      exit 0;;
+    *)                show_usage;         exit 1;;
+  esac
+fi
+
+# Do a version check if requested.
+if test "$do_check_versions" = "yes"; then
+  # Make sure we didn't receive a bad combination of parameters.
+  test "$echo_cppflags" = "yes" && show_usage && exit 1
+  test "$echo_cxxflags" = "yes" && show_usage && exit 1
+  test "$echo_ldflags" = "yes"  && show_usage && exit 1
+  test "$echo_libs" = "yes"     && show_usage && exit 1
+
+  if test "$exact_version" != ""; then
+    check_versions $exact_version $exact_version
+    # unreachable
+  else
+    check_versions ${min_version:-0.0.0} ${max_version:-9999.9999.9999}
+    # unreachable
+  fi
+fi
+
+# Do the output in the correct order so that these can be used in-line of
+# a compiler invocation.
+output=""
+test "$echo_cppflags" = "yes" && output="$output $gmock_cppflags"
+test "$echo_cxxflags" = "yes" && output="$output $gmock_cxxflags"
+test "$echo_ldflags" = "yes"  && output="$output $gmock_ldflags"
+test "$echo_libs" = "yes"     && output="$output $gmock_libs"
+echo $output
+
+exit 0
diff --git a/build/_deps/googletest-src/googlemock/scripts/gmock_doctor.py b/build/_deps/googletest-src/googlemock/scripts/gmock_doctor.py
new file mode 100755
index 0000000000000000000000000000000000000000..74992bc744810745c72ddd8bc20d9815af3c2abd
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/gmock_doctor.py
@@ -0,0 +1,640 @@
+#!/usr/bin/env python
+#
+# Copyright 2008, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Converts compiler's errors in code using Google Mock to plain English."""
+
+__author__ = 'wan@google.com (Zhanyong Wan)'
+
+import re
+import sys
+
+_VERSION = '1.0.3'
+
+_EMAIL = 'googlemock@googlegroups.com'
+
+_COMMON_GMOCK_SYMBOLS = [
+    # Matchers
+    '_',
+    'A',
+    'AddressSatisfies',
+    'AllOf',
+    'An',
+    'AnyOf',
+    'ContainerEq',
+    'Contains',
+    'ContainsRegex',
+    'DoubleEq',
+    'ElementsAre',
+    'ElementsAreArray',
+    'EndsWith',
+    'Eq',
+    'Field',
+    'FloatEq',
+    'Ge',
+    'Gt',
+    'HasSubstr',
+    'IsInitializedProto',
+    'Le',
+    'Lt',
+    'MatcherCast',
+    'Matches',
+    'MatchesRegex',
+    'NanSensitiveDoubleEq',
+    'NanSensitiveFloatEq',
+    'Ne',
+    'Not',
+    'NotNull',
+    'Pointee',
+    'Property',
+    'Ref',
+    'ResultOf',
+    'SafeMatcherCast',
+    'StartsWith',
+    'StrCaseEq',
+    'StrCaseNe',
+    'StrEq',
+    'StrNe',
+    'Truly',
+    'TypedEq',
+    'Value',
+
+    # Actions
+    'Assign',
+    'ByRef',
+    'DeleteArg',
+    'DoAll',
+    'DoDefault',
+    'IgnoreResult',
+    'Invoke',
+    'InvokeArgument',
+    'InvokeWithoutArgs',
+    'Return',
+    'ReturnNew',
+    'ReturnNull',
+    'ReturnRef',
+    'SaveArg',
+    'SetArgReferee',
+    'SetArgPointee',
+    'SetArgumentPointee',
+    'SetArrayArgument',
+    'SetErrnoAndReturn',
+    'Throw',
+    'WithArg',
+    'WithArgs',
+    'WithoutArgs',
+
+    # Cardinalities
+    'AnyNumber',
+    'AtLeast',
+    'AtMost',
+    'Between',
+    'Exactly',
+
+    # Sequences
+    'InSequence',
+    'Sequence',
+
+    # Misc
+    'DefaultValue',
+    'Mock',
+    ]
+
+# Regex for matching source file path and line number in the compiler's errors.
+_GCC_FILE_LINE_RE = r'(?P<file>.*):(?P<line>\d+):(\d+:)?\s+'
+_CLANG_FILE_LINE_RE = r'(?P<file>.*):(?P<line>\d+):(?P<column>\d+):\s+'
+_CLANG_NON_GMOCK_FILE_LINE_RE = (
+    r'(?P<file>.*[/\\^](?!gmock-)[^/\\]+):(?P<line>\d+):(?P<column>\d+):\s+')
+
+
+def _FindAllMatches(regex, s):
+  """Generates all matches of regex in string s."""
+
+  r = re.compile(regex)
+  return r.finditer(s)
+
+
+def _GenericDiagnoser(short_name, long_name, diagnoses, msg):
+  """Diagnoses the given disease by pattern matching.
+
+  Can provide different diagnoses for different patterns.
+
+  Args:
+    short_name: Short name of the disease.
+    long_name:  Long name of the disease.
+    diagnoses:  A list of pairs (regex, pattern for formatting the diagnosis
+                for matching regex).
+    msg:        Compiler's error messages.
+  Yields:
+    Tuples of the form
+      (short name of disease, long name of disease, diagnosis).
+  """
+  for regex, diagnosis in diagnoses:
+    if re.search(regex, msg):
+      diagnosis = '%(file)s:%(line)s:' + diagnosis
+      for m in _FindAllMatches(regex, msg):
+        yield (short_name, long_name, diagnosis % m.groupdict())
+
+
+def _NeedToReturnReferenceDiagnoser(msg):
+  """Diagnoses the NRR disease, given the error messages by the compiler."""
+
+  gcc_regex = (r'In member function \'testing::internal::ReturnAction<R>.*\n'
+               + _GCC_FILE_LINE_RE + r'instantiated from here\n'
+               r'.*gmock-actions\.h.*error: creating array with negative size')
+  clang_regex = (r'error:.*array.*negative.*\r?\n'
+                 r'(.*\n)*?' +
+                 _CLANG_NON_GMOCK_FILE_LINE_RE +
+                 r'note: in instantiation of function template specialization '
+                 r'\'testing::internal::ReturnAction<(?P<type>.*)>'
+                 r'::operator Action<.*>\' requested here')
+  clang11_re = (r'use_ReturnRef_instead_of_Return_to_return_a_reference.*'
+                r'(.*\n)*?' + _CLANG_NON_GMOCK_FILE_LINE_RE)
+
+  diagnosis = """
+You are using a Return() action in a function that returns a reference to
+%(type)s.  Please use ReturnRef() instead."""
+  return _GenericDiagnoser('NRR', 'Need to Return Reference',
+                           [(clang_regex, diagnosis),
+                            (clang11_re, diagnosis % {'type': 'a type'}),
+                            (gcc_regex, diagnosis % {'type': 'a type'})],
+                           msg)
+
+
+def _NeedToReturnSomethingDiagnoser(msg):
+  """Diagnoses the NRS disease, given the error messages by the compiler."""
+
+  gcc_regex = (_GCC_FILE_LINE_RE + r'(instantiated from here\n.'
+               r'*gmock.*actions\.h.*error: void value not ignored)'
+               r'|(error: control reaches end of non-void function)')
+  clang_regex1 = (_CLANG_FILE_LINE_RE +
+                  r'error: cannot initialize return object '
+                  r'of type \'Result\' \(aka \'(?P<return_type>.*)\'\) '
+                  r'with an rvalue of type \'void\'')
+  clang_regex2 = (_CLANG_FILE_LINE_RE +
+                  r'error: cannot initialize return object '
+                  r'of type \'(?P<return_type>.*)\' '
+                  r'with an rvalue of type \'void\'')
+  diagnosis = """
+You are using an action that returns void, but it needs to return
+%(return_type)s.  Please tell it *what* to return.  Perhaps you can use
+the pattern DoAll(some_action, Return(some_value))?"""
+  return _GenericDiagnoser(
+      'NRS',
+      'Need to Return Something',
+      [(gcc_regex, diagnosis % {'return_type': '*something*'}),
+       (clang_regex1, diagnosis),
+       (clang_regex2, diagnosis)],
+      msg)
+
+
+def _NeedToReturnNothingDiagnoser(msg):
+  """Diagnoses the NRN disease, given the error messages by the compiler."""
+
+  gcc_regex = (_GCC_FILE_LINE_RE + r'instantiated from here\n'
+               r'.*gmock-actions\.h.*error: instantiation of '
+               r'\'testing::internal::ReturnAction<R>::Impl<F>::value_\' '
+               r'as type \'void\'')
+  clang_regex1 = (r'error: field has incomplete type '
+                  r'\'Result\' \(aka \'void\'\)(\r)?\n'
+                  r'(.*\n)*?' +
+                  _CLANG_NON_GMOCK_FILE_LINE_RE + r'note: in instantiation '
+                  r'of function template specialization '
+                  r'\'testing::internal::ReturnAction<(?P<return_type>.*)>'
+                  r'::operator Action<void \(.*\)>\' requested here')
+  clang_regex2 = (r'error: field has incomplete type '
+                  r'\'Result\' \(aka \'void\'\)(\r)?\n'
+                  r'(.*\n)*?' +
+                  _CLANG_NON_GMOCK_FILE_LINE_RE + r'note: in instantiation '
+                  r'of function template specialization '
+                  r'\'testing::internal::DoBothAction<.*>'
+                  r'::operator Action<(?P<return_type>.*) \(.*\)>\' '
+                  r'requested here')
+  diagnosis = """
+You are using an action that returns %(return_type)s, but it needs to return
+void.  Please use a void-returning action instead.
+
+All actions but the last in DoAll(...) must return void.  Perhaps you need
+to re-arrange the order of actions in a DoAll(), if you are using one?"""
+  return _GenericDiagnoser(
+      'NRN',
+      'Need to Return Nothing',
+      [(gcc_regex, diagnosis % {'return_type': '*something*'}),
+       (clang_regex1, diagnosis),
+       (clang_regex2, diagnosis)],
+      msg)
+
+
+def _IncompleteByReferenceArgumentDiagnoser(msg):
+  """Diagnoses the IBRA disease, given the error messages by the compiler."""
+
+  gcc_regex = (_GCC_FILE_LINE_RE + r'instantiated from here\n'
+               r'.*gtest-printers\.h.*error: invalid application of '
+               r'\'sizeof\' to incomplete type \'(?P<type>.*)\'')
+
+  clang_regex = (r'.*gtest-printers\.h.*error: invalid application of '
+                 r'\'sizeof\' to an incomplete type '
+                 r'\'(?P<type>.*)( const)?\'\r?\n'
+                 r'(.*\n)*?' +
+                 _CLANG_NON_GMOCK_FILE_LINE_RE +
+                 r'note: in instantiation of member function '
+                 r'\'testing::internal2::TypeWithoutFormatter<.*>::'
+                 r'PrintValue\' requested here')
+  diagnosis = """
+In order to mock this function, Google Mock needs to see the definition
+of type "%(type)s" - declaration alone is not enough.  Either #include
+the header that defines it, or change the argument to be passed
+by pointer."""
+
+  return _GenericDiagnoser('IBRA', 'Incomplete By-Reference Argument Type',
+                           [(gcc_regex, diagnosis),
+                            (clang_regex, diagnosis)],
+                           msg)
+
+
+def _OverloadedFunctionMatcherDiagnoser(msg):
+  """Diagnoses the OFM disease, given the error messages by the compiler."""
+
+  gcc_regex = (_GCC_FILE_LINE_RE + r'error: no matching function for '
+               r'call to \'Truly\(<unresolved overloaded function type>\)')
+  clang_regex = (_CLANG_FILE_LINE_RE + r'error: no matching function for '
+                 r'call to \'Truly')
+  diagnosis = """
+The argument you gave to Truly() is an overloaded function.  Please tell
+your compiler which overloaded version you want to use.
+
+For example, if you want to use the version whose signature is
+  bool Foo(int n);
+you should write
+  Truly(static_cast<bool (*)(int n)>(Foo))"""
+  return _GenericDiagnoser('OFM', 'Overloaded Function Matcher',
+                           [(gcc_regex, diagnosis),
+                            (clang_regex, diagnosis)],
+                           msg)
+
+
+def _OverloadedFunctionActionDiagnoser(msg):
+  """Diagnoses the OFA disease, given the error messages by the compiler."""
+
+  gcc_regex = (_GCC_FILE_LINE_RE + r'error: no matching function for call to '
+               r'\'Invoke\(<unresolved overloaded function type>')
+  clang_regex = (_CLANG_FILE_LINE_RE + r'error: no matching '
+                 r'function for call to \'Invoke\'\r?\n'
+                 r'(.*\n)*?'
+                 r'.*\bgmock-generated-actions\.h:\d+:\d+:\s+'
+                 r'note: candidate template ignored:\s+'
+                 r'couldn\'t infer template argument \'FunctionImpl\'')
+  diagnosis = """
+Function you are passing to Invoke is overloaded.  Please tell your compiler
+which overloaded version you want to use.
+
+For example, if you want to use the version whose signature is
+  bool MyFunction(int n, double x);
+you should write something like
+  Invoke(static_cast<bool (*)(int n, double x)>(MyFunction))"""
+  return _GenericDiagnoser('OFA', 'Overloaded Function Action',
+                           [(gcc_regex, diagnosis),
+                            (clang_regex, diagnosis)],
+                           msg)
+
+
+def _OverloadedMethodActionDiagnoser(msg):
+  """Diagnoses the OMA disease, given the error messages by the compiler."""
+
+  gcc_regex = (_GCC_FILE_LINE_RE + r'error: no matching function for '
+               r'call to \'Invoke\(.+, <unresolved overloaded function '
+               r'type>\)')
+  clang_regex = (_CLANG_FILE_LINE_RE + r'error: no matching function '
+                 r'for call to \'Invoke\'\r?\n'
+                 r'(.*\n)*?'
+                 r'.*\bgmock-generated-actions\.h:\d+:\d+: '
+                 r'note: candidate function template not viable: '
+                 r'requires .*, but 2 (arguments )?were provided')
+  diagnosis = """
+The second argument you gave to Invoke() is an overloaded method.  Please
+tell your compiler which overloaded version you want to use.
+
+For example, if you want to use the version whose signature is
+  class Foo {
+    ...
+    bool Bar(int n, double x);
+  };
+you should write something like
+  Invoke(foo, static_cast<bool (Foo::*)(int n, double x)>(&Foo::Bar))"""
+  return _GenericDiagnoser('OMA', 'Overloaded Method Action',
+                           [(gcc_regex, diagnosis),
+                            (clang_regex, diagnosis)],
+                           msg)
+
+
+def _MockObjectPointerDiagnoser(msg):
+  """Diagnoses the MOP disease, given the error messages by the compiler."""
+
+  gcc_regex = (_GCC_FILE_LINE_RE + r'error: request for member '
+               r'\'gmock_(?P<method>.+)\' in \'(?P<mock_object>.+)\', '
+               r'which is of non-class type \'(.*::)*(?P<class_name>.+)\*\'')
+  clang_regex = (_CLANG_FILE_LINE_RE + r'error: member reference type '
+                 r'\'(?P<class_name>.*?) *\' is a pointer; '
+                 r'(did you mean|maybe you meant) to use \'->\'\?')
+  diagnosis = """
+The first argument to ON_CALL() and EXPECT_CALL() must be a mock *object*,
+not a *pointer* to it.  Please write '*(%(mock_object)s)' instead of
+'%(mock_object)s' as your first argument.
+
+For example, given the mock class:
+
+  class %(class_name)s : public ... {
+    ...
+    MOCK_METHOD0(%(method)s, ...);
+  };
+
+and the following mock instance:
+
+  %(class_name)s* mock_ptr = ...
+
+you should use the EXPECT_CALL like this:
+
+  EXPECT_CALL(*mock_ptr, %(method)s(...));"""
+
+  return _GenericDiagnoser(
+      'MOP',
+      'Mock Object Pointer',
+      [(gcc_regex, diagnosis),
+       (clang_regex, diagnosis % {'mock_object': 'mock_object',
+                                  'method': 'method',
+                                  'class_name': '%(class_name)s'})],
+       msg)
+
+
+def _NeedToUseSymbolDiagnoser(msg):
+  """Diagnoses the NUS disease, given the error messages by the compiler."""
+
+  gcc_regex = (_GCC_FILE_LINE_RE + r'error: \'(?P<symbol>.+)\' '
+               r'(was not declared in this scope|has not been declared)')
+  clang_regex = (_CLANG_FILE_LINE_RE +
+                 r'error: (use of undeclared identifier|unknown type name|'
+                 r'no template named) \'(?P<symbol>[^\']+)\'')
+  diagnosis = """
+'%(symbol)s' is defined by Google Mock in the testing namespace.
+Did you forget to write
+  using testing::%(symbol)s;
+?"""
+  for m in (list(_FindAllMatches(gcc_regex, msg)) +
+            list(_FindAllMatches(clang_regex, msg))):
+    symbol = m.groupdict()['symbol']
+    if symbol in _COMMON_GMOCK_SYMBOLS:
+      yield ('NUS', 'Need to Use Symbol', diagnosis % m.groupdict())
+
+
+def _NeedToUseReturnNullDiagnoser(msg):
+  """Diagnoses the NRNULL disease, given the error messages by the compiler."""
+
+  gcc_regex = ('instantiated from \'testing::internal::ReturnAction<R>'
+               '::operator testing::Action<Func>\(\) const.*\n' +
+               _GCC_FILE_LINE_RE + r'instantiated from here\n'
+               r'.*error: no matching function for call to \'ImplicitCast_\('
+               r'(:?long )?int&\)')
+  clang_regex = (r'\bgmock-actions.h:.* error: no matching function for '
+                 r'call to \'ImplicitCast_\'\r?\n'
+                 r'(.*\n)*?' +
+                 _CLANG_NON_GMOCK_FILE_LINE_RE + r'note: in instantiation '
+                 r'of function template specialization '
+                 r'\'testing::internal::ReturnAction<(int|long)>::operator '
+                 r'Action<(?P<type>.*)\(\)>\' requested here')
+  diagnosis = """
+You are probably calling Return(NULL) and the compiler isn't sure how to turn
+NULL into %(type)s. Use ReturnNull() instead.
+Note: the line number may be off; please fix all instances of Return(NULL)."""
+  return _GenericDiagnoser(
+      'NRNULL', 'Need to use ReturnNull',
+      [(clang_regex, diagnosis),
+       (gcc_regex, diagnosis % {'type': 'the right type'})],
+      msg)
+
+
+def _TypeInTemplatedBaseDiagnoser(msg):
+  """Diagnoses the TTB disease, given the error messages by the compiler."""
+
+  # This version works when the type is used as the mock function's return
+  # type.
+  gcc_4_3_1_regex_type_in_retval = (
+      r'In member function \'int .*\n' + _GCC_FILE_LINE_RE +
+      r'error: a function call cannot appear in a constant-expression')
+  gcc_4_4_0_regex_type_in_retval = (
+      r'error: a function call cannot appear in a constant-expression'
+      + _GCC_FILE_LINE_RE + r'error: template argument 1 is invalid\n')
+  # This version works when the type is used as the mock function's sole
+  # parameter type.
+  gcc_regex_type_of_sole_param = (
+      _GCC_FILE_LINE_RE +
+      r'error: \'(?P<type>.+)\' was not declared in this scope\n'
+      r'.*error: template argument 1 is invalid\n')
+  # This version works when the type is used as a parameter of a mock
+  # function that has multiple parameters.
+  gcc_regex_type_of_a_param = (
+      r'error: expected `;\' before \'::\' token\n'
+      + _GCC_FILE_LINE_RE +
+      r'error: \'(?P<type>.+)\' was not declared in this scope\n'
+      r'.*error: template argument 1 is invalid\n'
+      r'.*error: \'.+\' was not declared in this scope')
+  clang_regex_type_of_retval_or_sole_param = (
+      _CLANG_FILE_LINE_RE +
+      r'error: use of undeclared identifier \'(?P<type>.*)\'\n'
+      r'(.*\n)*?'
+      r'(?P=file):(?P=line):\d+: error: '
+      r'non-friend class member \'Result\' cannot have a qualified name'
+      )
+  clang_regex_type_of_a_param = (
+      _CLANG_FILE_LINE_RE +
+      r'error: C\+\+ requires a type specifier for all declarations\n'
+      r'(.*\n)*?'
+      r'(?P=file):(?P=line):(?P=column): error: '
+      r'C\+\+ requires a type specifier for all declarations'
+      )
+  clang_regex_unknown_type = (
+      _CLANG_FILE_LINE_RE +
+      r'error: unknown type name \'(?P<type>[^\']+)\''
+      )
+
+  diagnosis = """
+In a mock class template, types or typedefs defined in the base class
+template are *not* automatically visible.  This is how C++ works.  Before
+you can use a type or typedef named %(type)s defined in base class Base<T>, you
+need to make it visible.  One way to do it is:
+
+  typedef typename Base<T>::%(type)s %(type)s;"""
+
+  for diag in _GenericDiagnoser(
+      'TTB', 'Type in Template Base',
+      [(gcc_4_3_1_regex_type_in_retval, diagnosis % {'type': 'Foo'}),
+       (gcc_4_4_0_regex_type_in_retval, diagnosis % {'type': 'Foo'}),
+       (gcc_regex_type_of_sole_param, diagnosis),
+       (gcc_regex_type_of_a_param, diagnosis),
+       (clang_regex_type_of_retval_or_sole_param, diagnosis),
+       (clang_regex_type_of_a_param, diagnosis % {'type': 'Foo'})],
+      msg):
+    yield diag
+  # Avoid overlap with the NUS pattern.
+  for m in _FindAllMatches(clang_regex_unknown_type, msg):
+    type_ = m.groupdict()['type']
+    if type_ not in _COMMON_GMOCK_SYMBOLS:
+      yield ('TTB', 'Type in Template Base', diagnosis % m.groupdict())
+
+
+def _WrongMockMethodMacroDiagnoser(msg):
+  """Diagnoses the WMM disease, given the error messages by the compiler."""
+
+  gcc_regex = (_GCC_FILE_LINE_RE +
+               r'.*this_method_does_not_take_(?P<wrong_args>\d+)_argument.*\n'
+               r'.*\n'
+               r'.*candidates are.*FunctionMocker<[^>]+A(?P<args>\d+)\)>')
+  clang_regex = (_CLANG_NON_GMOCK_FILE_LINE_RE +
+                 r'error:.*array.*negative.*r?\n'
+                 r'(.*\n)*?'
+                 r'(?P=file):(?P=line):(?P=column): error: too few arguments '
+                 r'to function call, expected (?P<args>\d+), '
+                 r'have (?P<wrong_args>\d+)')
+  clang11_re = (_CLANG_NON_GMOCK_FILE_LINE_RE +
+                r'.*this_method_does_not_take_'
+                r'(?P<wrong_args>\d+)_argument.*')
+  diagnosis = """
+You are using MOCK_METHOD%(wrong_args)s to define a mock method that has
+%(args)s arguments. Use MOCK_METHOD%(args)s (or MOCK_CONST_METHOD%(args)s,
+MOCK_METHOD%(args)s_T, MOCK_CONST_METHOD%(args)s_T as appropriate) instead."""
+  return _GenericDiagnoser('WMM', 'Wrong MOCK_METHODn Macro',
+                           [(gcc_regex, diagnosis),
+                            (clang11_re, diagnosis % {'wrong_args': 'm',
+                                                      'args': 'n'}),
+                            (clang_regex, diagnosis)],
+                           msg)
+
+
+def _WrongParenPositionDiagnoser(msg):
+  """Diagnoses the WPP disease, given the error messages by the compiler."""
+
+  gcc_regex = (_GCC_FILE_LINE_RE +
+               r'error:.*testing::internal::MockSpec<.* has no member named \''
+               r'(?P<method>\w+)\'')
+  clang_regex = (_CLANG_NON_GMOCK_FILE_LINE_RE +
+                 r'error: no member named \'(?P<method>\w+)\' in '
+                 r'\'testing::internal::MockSpec<.*>\'')
+  diagnosis = """
+The closing parenthesis of ON_CALL or EXPECT_CALL should be *before*
+".%(method)s".  For example, you should write:
+  EXPECT_CALL(my_mock, Foo(_)).%(method)s(...);
+instead of:
+  EXPECT_CALL(my_mock, Foo(_).%(method)s(...));"""
+  return _GenericDiagnoser('WPP', 'Wrong Parenthesis Position',
+                           [(gcc_regex, diagnosis),
+                            (clang_regex, diagnosis)],
+                           msg)
+
+
+_DIAGNOSERS = [
+    _IncompleteByReferenceArgumentDiagnoser,
+    _MockObjectPointerDiagnoser,
+    _NeedToReturnNothingDiagnoser,
+    _NeedToReturnReferenceDiagnoser,
+    _NeedToReturnSomethingDiagnoser,
+    _NeedToUseReturnNullDiagnoser,
+    _NeedToUseSymbolDiagnoser,
+    _OverloadedFunctionActionDiagnoser,
+    _OverloadedFunctionMatcherDiagnoser,
+    _OverloadedMethodActionDiagnoser,
+    _TypeInTemplatedBaseDiagnoser,
+    _WrongMockMethodMacroDiagnoser,
+    _WrongParenPositionDiagnoser,
+    ]
+
+
+def Diagnose(msg):
+  """Generates all possible diagnoses given the compiler error message."""
+
+  msg = re.sub(r'\x1b\[[^m]*m', '', msg)  # Strips all color formatting.
+  # Assuming the string is using the UTF-8 encoding, replaces the left and
+  # the right single quote characters with apostrophes.
+  msg = re.sub(r'(\xe2\x80\x98|\xe2\x80\x99)', "'", msg)
+
+  diagnoses = []
+  for diagnoser in _DIAGNOSERS:
+    for diag in diagnoser(msg):
+      diagnosis = '[%s - %s]\n%s' % diag
+      if not diagnosis in diagnoses:
+        diagnoses.append(diagnosis)
+  return diagnoses
+
+
+def main():
+  print ('Google Mock Doctor v%s - '
+         'diagnoses problems in code using Google Mock.' % _VERSION)
+
+  if sys.stdin.isatty():
+    print ('Please copy and paste the compiler errors here.  Press c-D when '
+           'you are done:')
+  else:
+    print ('Waiting for compiler errors on stdin . . .')
+
+  msg = sys.stdin.read().strip()
+  diagnoses = Diagnose(msg)
+  count = len(diagnoses)
+  if not count:
+    print ("""
+Your compiler complained:
+8<------------------------------------------------------------
+%s
+------------------------------------------------------------>8
+
+Uh-oh, I'm not smart enough to figure out what the problem is. :-(
+However...
+If you send your source code and the compiler's error messages to
+%s, you can be helped and I can get smarter --
+win-win for us!""" % (msg, _EMAIL))
+  else:
+    print ('------------------------------------------------------------')
+    print ('Your code appears to have the following',)
+    if count > 1:
+      print ('%s diseases:' % (count,))
+    else:
+      print ('disease:')
+    i = 0
+    for d in diagnoses:
+      i += 1
+      if count > 1:
+        print ('\n#%s:' % (i,))
+      print (d)
+    print ("""
+How did I do?  If you think I'm wrong or unhelpful, please send your
+source code and the compiler's error messages to %s.
+Then you can be helped and I can get smarter -- I promise I won't be upset!""" %
+           _EMAIL)
+
+
+if __name__ == '__main__':
+  main()
diff --git a/build/_deps/googletest-src/googlemock/scripts/upload.py b/build/_deps/googletest-src/googlemock/scripts/upload.py
new file mode 100755
index 0000000000000000000000000000000000000000..95239dc2cbed11b17ff7ccc00eefa722d722cb19
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/upload.py
@@ -0,0 +1,1387 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Tool for uploading diffs from a version control system to the codereview app.
+
+Usage summary: upload.py [options] [-- diff_options]
+
+Diff options are passed to the diff command of the underlying system.
+
+Supported version control systems:
+  Git
+  Mercurial
+  Subversion
+
+It is important for Git/Mercurial users to specify a tree/node/branch to diff
+against by using the '--rev' option.
+"""
+# This code is derived from appcfg.py in the App Engine SDK (open source),
+# and from ASPN recipe #146306.
+
+import cookielib
+import getpass
+import logging
+import md5
+import mimetypes
+import optparse
+import os
+import re
+import socket
+import subprocess
+import sys
+import urllib
+import urllib2
+import urlparse
+
+try:
+  import readline
+except ImportError:
+  pass
+
+# The logging verbosity:
+#  0: Errors only.
+#  1: Status messages.
+#  2: Info logs.
+#  3: Debug logs.
+verbosity = 1
+
+# Max size of patch or base file.
+MAX_UPLOAD_SIZE = 900 * 1024
+
+
+def GetEmail(prompt):
+  """Prompts the user for their email address and returns it.
+
+  The last used email address is saved to a file and offered up as a suggestion
+  to the user. If the user presses enter without typing in anything the last
+  used email address is used. If the user enters a new address, it is saved
+  for next time we prompt.
+
+  """
+  last_email_file_name = os.path.expanduser("~/.last_codereview_email_address")
+  last_email = ""
+  if os.path.exists(last_email_file_name):
+    try:
+      last_email_file = open(last_email_file_name, "r")
+      last_email = last_email_file.readline().strip("\n")
+      last_email_file.close()
+      prompt += " [%s]" % last_email
+    except IOError, e:
+      pass
+  email = raw_input(prompt + ": ").strip()
+  if email:
+    try:
+      last_email_file = open(last_email_file_name, "w")
+      last_email_file.write(email)
+      last_email_file.close()
+    except IOError, e:
+      pass
+  else:
+    email = last_email
+  return email
+
+
+def StatusUpdate(msg):
+  """Print a status message to stdout.
+
+  If 'verbosity' is greater than 0, print the message.
+
+  Args:
+    msg: The string to print.
+  """
+  if verbosity > 0:
+    print msg
+
+
+def ErrorExit(msg):
+  """Print an error message to stderr and exit."""
+  print >>sys.stderr, msg
+  sys.exit(1)
+
+
+class ClientLoginError(urllib2.HTTPError):
+  """Raised to indicate there was an error authenticating with ClientLogin."""
+
+  def __init__(self, url, code, msg, headers, args):
+    urllib2.HTTPError.__init__(self, url, code, msg, headers, None)
+    self.args = args
+    self.reason = args["Error"]
+
+
+class AbstractRpcServer(object):
+  """Provides a common interface for a simple RPC server."""
+
+  def __init__(self, host, auth_function, host_override=None, extra_headers={},
+               save_cookies=False):
+    """Creates a new HttpRpcServer.
+
+    Args:
+      host: The host to send requests to.
+      auth_function: A function that takes no arguments and returns an
+        (email, password) tuple when called. Will be called if authentication
+        is required.
+      host_override: The host header to send to the server (defaults to host).
+      extra_headers: A dict of extra headers to append to every request.
+      save_cookies: If True, save the authentication cookies to local disk.
+        If False, use an in-memory cookiejar instead.  Subclasses must
+        implement this functionality.  Defaults to False.
+    """
+    self.host = host
+    self.host_override = host_override
+    self.auth_function = auth_function
+    self.authenticated = False
+    self.extra_headers = extra_headers
+    self.save_cookies = save_cookies
+    self.opener = self._GetOpener()
+    if self.host_override:
+      logging.info("Server: %s; Host: %s", self.host, self.host_override)
+    else:
+      logging.info("Server: %s", self.host)
+
+  def _GetOpener(self):
+    """Returns an OpenerDirector for making HTTP requests.
+
+    Returns:
+      A urllib2.OpenerDirector object.
+    """
+    raise NotImplementedError()
+
+  def _CreateRequest(self, url, data=None):
+    """Creates a new urllib request."""
+    logging.debug("Creating request for: '%s' with payload:\n%s", url, data)
+    req = urllib2.Request(url, data=data)
+    if self.host_override:
+      req.add_header("Host", self.host_override)
+    for key, value in self.extra_headers.iteritems():
+      req.add_header(key, value)
+    return req
+
+  def _GetAuthToken(self, email, password):
+    """Uses ClientLogin to authenticate the user, returning an auth token.
+
+    Args:
+      email:    The user's email address
+      password: The user's password
+
+    Raises:
+      ClientLoginError: If there was an error authenticating with ClientLogin.
+      HTTPError: If there was some other form of HTTP error.
+
+    Returns:
+      The authentication token returned by ClientLogin.
+    """
+    account_type = "GOOGLE"
+    if self.host.endswith(".google.com"):
+      # Needed for use inside Google.
+      account_type = "HOSTED"
+    req = self._CreateRequest(
+        url="https://www.google.com/accounts/ClientLogin",
+        data=urllib.urlencode({
+            "Email": email,
+            "Passwd": password,
+            "service": "ah",
+            "source": "rietveld-codereview-upload",
+            "accountType": account_type,
+        }),
+    )
+    try:
+      response = self.opener.open(req)
+      response_body = response.read()
+      response_dict = dict(x.split("=")
+                           for x in response_body.split("\n") if x)
+      return response_dict["Auth"]
+    except urllib2.HTTPError, e:
+      if e.code == 403:
+        body = e.read()
+        response_dict = dict(x.split("=", 1) for x in body.split("\n") if x)
+        raise ClientLoginError(req.get_full_url(), e.code, e.msg,
+                               e.headers, response_dict)
+      else:
+        raise
+
+  def _GetAuthCookie(self, auth_token):
+    """Fetches authentication cookies for an authentication token.
+
+    Args:
+      auth_token: The authentication token returned by ClientLogin.
+
+    Raises:
+      HTTPError: If there was an error fetching the authentication cookies.
+    """
+    # This is a dummy value to allow us to identify when we're successful.
+    continue_location = "http://localhost/"
+    args = {"continue": continue_location, "auth": auth_token}
+    req = self._CreateRequest("http://%s/_ah/login?%s" %
+                              (self.host, urllib.urlencode(args)))
+    try:
+      response = self.opener.open(req)
+    except urllib2.HTTPError, e:
+      response = e
+    if (response.code != 302 or
+        response.info()["location"] != continue_location):
+      raise urllib2.HTTPError(req.get_full_url(), response.code, response.msg,
+                              response.headers, response.fp)
+    self.authenticated = True
+
+  def _Authenticate(self):
+    """Authenticates the user.
+
+    The authentication process works as follows:
+     1) We get a username and password from the user
+     2) We use ClientLogin to obtain an AUTH token for the user
+        (see https://developers.google.com/identity/protocols/AuthForInstalledApps).
+     3) We pass the auth token to /_ah/login on the server to obtain an
+        authentication cookie. If login was successful, it tries to redirect
+        us to the URL we provided.
+
+    If we attempt to access the upload API without first obtaining an
+    authentication cookie, it returns a 401 response and directs us to
+    authenticate ourselves with ClientLogin.
+    """
+    for i in range(3):
+      credentials = self.auth_function()
+      try:
+        auth_token = self._GetAuthToken(credentials[0], credentials[1])
+      except ClientLoginError, e:
+        if e.reason == "BadAuthentication":
+          print >>sys.stderr, "Invalid username or password."
+          continue
+        if e.reason == "CaptchaRequired":
+          print >>sys.stderr, (
+              "Please go to\n"
+              "https://www.google.com/accounts/DisplayUnlockCaptcha\n"
+              "and verify you are a human.  Then try again.")
+          break
+        if e.reason == "NotVerified":
+          print >>sys.stderr, "Account not verified."
+          break
+        if e.reason == "TermsNotAgreed":
+          print >>sys.stderr, "User has not agreed to TOS."
+          break
+        if e.reason == "AccountDeleted":
+          print >>sys.stderr, "The user account has been deleted."
+          break
+        if e.reason == "AccountDisabled":
+          print >>sys.stderr, "The user account has been disabled."
+          break
+        if e.reason == "ServiceDisabled":
+          print >>sys.stderr, ("The user's access to the service has been "
+                               "disabled.")
+          break
+        if e.reason == "ServiceUnavailable":
+          print >>sys.stderr, "The service is not available; try again later."
+          break
+        raise
+      self._GetAuthCookie(auth_token)
+      return
+
+  def Send(self, request_path, payload=None,
+           content_type="application/octet-stream",
+           timeout=None,
+           **kwargs):
+    """Sends an RPC and returns the response.
+
+    Args:
+      request_path: The path to send the request to, eg /api/appversion/create.
+      payload: The body of the request, or None to send an empty request.
+      content_type: The Content-Type header to use.
+      timeout: timeout in seconds; default None i.e. no timeout.
+        (Note: for large requests on OS X, the timeout doesn't work right.)
+      kwargs: Any keyword arguments are converted into query string parameters.
+
+    Returns:
+      The response body, as a string.
+    """
+    # TODO: Don't require authentication.  Let the server say
+    # whether it is necessary.
+    if not self.authenticated:
+      self._Authenticate()
+
+    old_timeout = socket.getdefaulttimeout()
+    socket.setdefaulttimeout(timeout)
+    try:
+      tries = 0
+      while True:
+        tries += 1
+        args = dict(kwargs)
+        url = "http://%s%s" % (self.host, request_path)
+        if args:
+          url += "?" + urllib.urlencode(args)
+        req = self._CreateRequest(url=url, data=payload)
+        req.add_header("Content-Type", content_type)
+        try:
+          f = self.opener.open(req)
+          response = f.read()
+          f.close()
+          return response
+        except urllib2.HTTPError, e:
+          if tries > 3:
+            raise
+          elif e.code == 401:
+            self._Authenticate()
+##           elif e.code >= 500 and e.code < 600:
+##             # Server Error - try again.
+##             continue
+          else:
+            raise
+    finally:
+      socket.setdefaulttimeout(old_timeout)
+
+
+class HttpRpcServer(AbstractRpcServer):
+  """Provides a simplified RPC-style interface for HTTP requests."""
+
+  def _Authenticate(self):
+    """Save the cookie jar after authentication."""
+    super(HttpRpcServer, self)._Authenticate()
+    if self.save_cookies:
+      StatusUpdate("Saving authentication cookies to %s" % self.cookie_file)
+      self.cookie_jar.save()
+
+  def _GetOpener(self):
+    """Returns an OpenerDirector that supports cookies and ignores redirects.
+
+    Returns:
+      A urllib2.OpenerDirector object.
+    """
+    opener = urllib2.OpenerDirector()
+    opener.add_handler(urllib2.ProxyHandler())
+    opener.add_handler(urllib2.UnknownHandler())
+    opener.add_handler(urllib2.HTTPHandler())
+    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
+    opener.add_handler(urllib2.HTTPSHandler())
+    opener.add_handler(urllib2.HTTPErrorProcessor())
+    if self.save_cookies:
+      self.cookie_file = os.path.expanduser("~/.codereview_upload_cookies")
+      self.cookie_jar = cookielib.MozillaCookieJar(self.cookie_file)
+      if os.path.exists(self.cookie_file):
+        try:
+          self.cookie_jar.load()
+          self.authenticated = True
+          StatusUpdate("Loaded authentication cookies from %s" %
+                       self.cookie_file)
+        except (cookielib.LoadError, IOError):
+          # Failed to load cookies - just ignore them.
+          pass
+      else:
+        # Create an empty cookie file with mode 600
+        fd = os.open(self.cookie_file, os.O_CREAT, 0600)
+        os.close(fd)
+      # Always chmod the cookie file
+      os.chmod(self.cookie_file, 0600)
+    else:
+      # Don't save cookies across runs of update.py.
+      self.cookie_jar = cookielib.CookieJar()
+    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
+    return opener
+
+
+parser = optparse.OptionParser(usage="%prog [options] [-- diff_options]")
+parser.add_option("-y", "--assume_yes", action="store_true",
+                  dest="assume_yes", default=False,
+                  help="Assume that the answer to yes/no questions is 'yes'.")
+# Logging
+group = parser.add_option_group("Logging options")
+group.add_option("-q", "--quiet", action="store_const", const=0,
+                 dest="verbose", help="Print errors only.")
+group.add_option("-v", "--verbose", action="store_const", const=2,
+                 dest="verbose", default=1,
+                 help="Print info level logs (default).")
+group.add_option("--noisy", action="store_const", const=3,
+                 dest="verbose", help="Print all logs.")
+# Review server
+group = parser.add_option_group("Review server options")
+group.add_option("-s", "--server", action="store", dest="server",
+                 default="codereview.appspot.com",
+                 metavar="SERVER",
+                 help=("The server to upload to. The format is host[:port]. "
+                       "Defaults to 'codereview.appspot.com'."))
+group.add_option("-e", "--email", action="store", dest="email",
+                 metavar="EMAIL", default=None,
+                 help="The username to use. Will prompt if omitted.")
+group.add_option("-H", "--host", action="store", dest="host",
+                 metavar="HOST", default=None,
+                 help="Overrides the Host header sent with all RPCs.")
+group.add_option("--no_cookies", action="store_false",
+                 dest="save_cookies", default=True,
+                 help="Do not save authentication cookies to local disk.")
+# Issue
+group = parser.add_option_group("Issue options")
+group.add_option("-d", "--description", action="store", dest="description",
+                 metavar="DESCRIPTION", default=None,
+                 help="Optional description when creating an issue.")
+group.add_option("-f", "--description_file", action="store",
+                 dest="description_file", metavar="DESCRIPTION_FILE",
+                 default=None,
+                 help="Optional path of a file that contains "
+                      "the description when creating an issue.")
+group.add_option("-r", "--reviewers", action="store", dest="reviewers",
+                 metavar="REVIEWERS", default=None,
+                 help="Add reviewers (comma separated email addresses).")
+group.add_option("--cc", action="store", dest="cc",
+                 metavar="CC", default=None,
+                 help="Add CC (comma separated email addresses).")
+# Upload options
+group = parser.add_option_group("Patch options")
+group.add_option("-m", "--message", action="store", dest="message",
+                 metavar="MESSAGE", default=None,
+                 help="A message to identify the patch. "
+                      "Will prompt if omitted.")
+group.add_option("-i", "--issue", type="int", action="store",
+                 metavar="ISSUE", default=None,
+                 help="Issue number to which to add. Defaults to new issue.")
+group.add_option("--download_base", action="store_true",
+                 dest="download_base", default=False,
+                 help="Base files will be downloaded by the server "
+                 "(side-by-side diffs may not work on files with CRs).")
+group.add_option("--rev", action="store", dest="revision",
+                 metavar="REV", default=None,
+                 help="Branch/tree/revision to diff against (used by DVCS).")
+group.add_option("--send_mail", action="store_true",
+                 dest="send_mail", default=False,
+                 help="Send notification email to reviewers.")
+
+
+def GetRpcServer(options):
+  """Returns an instance of an AbstractRpcServer.
+
+  Returns:
+    A new AbstractRpcServer, on which RPC calls can be made.
+  """
+
+  rpc_server_class = HttpRpcServer
+
+  def GetUserCredentials():
+    """Prompts the user for a username and password."""
+    email = options.email
+    if email is None:
+      email = GetEmail("Email (login for uploading to %s)" % options.server)
+    password = getpass.getpass("Password for %s: " % email)
+    return (email, password)
+
+  # If this is the dev_appserver, use fake authentication.
+  host = (options.host or options.server).lower()
+  if host == "localhost" or host.startswith("localhost:"):
+    email = options.email
+    if email is None:
+      email = "test@example.com"
+      logging.info("Using debug user %s.  Override with --email" % email)
+    server = rpc_server_class(
+        options.server,
+        lambda: (email, "password"),
+        host_override=options.host,
+        extra_headers={"Cookie":
+                       'dev_appserver_login="%s:False"' % email},
+        save_cookies=options.save_cookies)
+    # Don't try to talk to ClientLogin.
+    server.authenticated = True
+    return server
+
+  return rpc_server_class(options.server, GetUserCredentials,
+                          host_override=options.host,
+                          save_cookies=options.save_cookies)
+
+
+def EncodeMultipartFormData(fields, files):
+  """Encode form fields for multipart/form-data.
+
+  Args:
+    fields: A sequence of (name, value) elements for regular form fields.
+    files: A sequence of (name, filename, value) elements for data to be
+           uploaded as files.
+  Returns:
+    (content_type, body) ready for httplib.HTTP instance.
+
+  Source:
+    https://web.archive.org/web/20160116052001/code.activestate.com/recipes/146306
+  """
+  BOUNDARY = '-M-A-G-I-C---B-O-U-N-D-A-R-Y-'
+  CRLF = '\r\n'
+  lines = []
+  for (key, value) in fields:
+    lines.append('--' + BOUNDARY)
+    lines.append('Content-Disposition: form-data; name="%s"' % key)
+    lines.append('')
+    lines.append(value)
+  for (key, filename, value) in files:
+    lines.append('--' + BOUNDARY)
+    lines.append('Content-Disposition: form-data; name="%s"; filename="%s"' %
+             (key, filename))
+    lines.append('Content-Type: %s' % GetContentType(filename))
+    lines.append('')
+    lines.append(value)
+  lines.append('--' + BOUNDARY + '--')
+  lines.append('')
+  body = CRLF.join(lines)
+  content_type = 'multipart/form-data; boundary=%s' % BOUNDARY
+  return content_type, body
+
+
+def GetContentType(filename):
+  """Helper to guess the content-type from the filename."""
+  return mimetypes.guess_type(filename)[0] or 'application/octet-stream'
+
+
+# Use a shell for subcommands on Windows to get a PATH search.
+use_shell = sys.platform.startswith("win")
+
+def RunShellWithReturnCode(command, print_output=False,
+                           universal_newlines=True):
+  """Executes a command and returns the output from stdout and the return code.
+
+  Args:
+    command: Command to execute.
+    print_output: If True, the output is printed to stdout.
+                  If False, both stdout and stderr are ignored.
+    universal_newlines: Use universal_newlines flag (default: True).
+
+  Returns:
+    Tuple (output, return code)
+  """
+  logging.info("Running %s", command)
+  p = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
+                       shell=use_shell, universal_newlines=universal_newlines)
+  if print_output:
+    output_array = []
+    while True:
+      line = p.stdout.readline()
+      if not line:
+        break
+      print line.strip("\n")
+      output_array.append(line)
+    output = "".join(output_array)
+  else:
+    output = p.stdout.read()
+  p.wait()
+  errout = p.stderr.read()
+  if print_output and errout:
+    print >>sys.stderr, errout
+  p.stdout.close()
+  p.stderr.close()
+  return output, p.returncode
+
+
+def RunShell(command, silent_ok=False, universal_newlines=True,
+             print_output=False):
+  data, retcode = RunShellWithReturnCode(command, print_output,
+                                         universal_newlines)
+  if retcode:
+    ErrorExit("Got error status from %s:\n%s" % (command, data))
+  if not silent_ok and not data:
+    ErrorExit("No output from %s" % command)
+  return data
+
+
+class VersionControlSystem(object):
+  """Abstract base class providing an interface to the VCS."""
+
+  def __init__(self, options):
+    """Constructor.
+
+    Args:
+      options: Command line options.
+    """
+    self.options = options
+
+  def GenerateDiff(self, args):
+    """Return the current diff as a string.
+
+    Args:
+      args: Extra arguments to pass to the diff command.
+    """
+    raise NotImplementedError(
+        "abstract method -- subclass %s must override" % self.__class__)
+
+  def GetUnknownFiles(self):
+    """Return a list of files unknown to the VCS."""
+    raise NotImplementedError(
+        "abstract method -- subclass %s must override" % self.__class__)
+
+  def CheckForUnknownFiles(self):
+    """Show an "are you sure?" prompt if there are unknown files."""
+    unknown_files = self.GetUnknownFiles()
+    if unknown_files:
+      print "The following files are not added to version control:"
+      for line in unknown_files:
+        print line
+      prompt = "Are you sure to continue?(y/N) "
+      answer = raw_input(prompt).strip()
+      if answer != "y":
+        ErrorExit("User aborted")
+
+  def GetBaseFile(self, filename):
+    """Get the content of the upstream version of a file.
+
+    Returns:
+      A tuple (base_content, new_content, is_binary, status)
+        base_content: The contents of the base file.
+        new_content: For text files, this is empty.  For binary files, this is
+          the contents of the new file, since the diff output won't contain
+          information to reconstruct the current file.
+        is_binary: True iff the file is binary.
+        status: The status of the file.
+    """
+
+    raise NotImplementedError(
+        "abstract method -- subclass %s must override" % self.__class__)
+
+
+  def GetBaseFiles(self, diff):
+    """Helper that calls GetBase file for each file in the patch.
+
+    Returns:
+      A dictionary that maps from filename to GetBaseFile's tuple.  Filenames
+      are retrieved based on lines that start with "Index:" or
+      "Property changes on:".
+    """
+    files = {}
+    for line in diff.splitlines(True):
+      if line.startswith('Index:') or line.startswith('Property changes on:'):
+        unused, filename = line.split(':', 1)
+        # On Windows if a file has property changes its filename uses '\'
+        # instead of '/'.
+        filename = filename.strip().replace('\\', '/')
+        files[filename] = self.GetBaseFile(filename)
+    return files
+
+
+  def UploadBaseFiles(self, issue, rpc_server, patch_list, patchset, options,
+                      files):
+    """Uploads the base files (and if necessary, the current ones as well)."""
+
+    def UploadFile(filename, file_id, content, is_binary, status, is_base):
+      """Uploads a file to the server."""
+      file_too_large = False
+      if is_base:
+        type = "base"
+      else:
+        type = "current"
+      if len(content) > MAX_UPLOAD_SIZE:
+        print ("Not uploading the %s file for %s because it's too large." %
+               (type, filename))
+        file_too_large = True
+        content = ""
+      checksum = md5.new(content).hexdigest()
+      if options.verbose > 0 and not file_too_large:
+        print "Uploading %s file for %s" % (type, filename)
+      url = "/%d/upload_content/%d/%d" % (int(issue), int(patchset), file_id)
+      form_fields = [("filename", filename),
+                     ("status", status),
+                     ("checksum", checksum),
+                     ("is_binary", str(is_binary)),
+                     ("is_current", str(not is_base)),
+                    ]
+      if file_too_large:
+        form_fields.append(("file_too_large", "1"))
+      if options.email:
+        form_fields.append(("user", options.email))
+      ctype, body = EncodeMultipartFormData(form_fields,
+                                            [("data", filename, content)])
+      response_body = rpc_server.Send(url, body,
+                                      content_type=ctype)
+      if not response_body.startswith("OK"):
+        StatusUpdate("  --> %s" % response_body)
+        sys.exit(1)
+
+    patches = dict()
+    [patches.setdefault(v, k) for k, v in patch_list]
+    for filename in patches.keys():
+      base_content, new_content, is_binary, status = files[filename]
+      file_id_str = patches.get(filename)
+      if file_id_str.find("nobase") != -1:
+        base_content = None
+        file_id_str = file_id_str[file_id_str.rfind("_") + 1:]
+      file_id = int(file_id_str)
+      if base_content != None:
+        UploadFile(filename, file_id, base_content, is_binary, status, True)
+      if new_content != None:
+        UploadFile(filename, file_id, new_content, is_binary, status, False)
+
+  def IsImage(self, filename):
+    """Returns true if the filename has an image extension."""
+    mimetype =  mimetypes.guess_type(filename)[0]
+    if not mimetype:
+      return False
+    return mimetype.startswith("image/")
+
+
+class SubversionVCS(VersionControlSystem):
+  """Implementation of the VersionControlSystem interface for Subversion."""
+
+  def __init__(self, options):
+    super(SubversionVCS, self).__init__(options)
+    if self.options.revision:
+      match = re.match(r"(\d+)(:(\d+))?", self.options.revision)
+      if not match:
+        ErrorExit("Invalid Subversion revision %s." % self.options.revision)
+      self.rev_start = match.group(1)
+      self.rev_end = match.group(3)
+    else:
+      self.rev_start = self.rev_end = None
+    # Cache output from "svn list -r REVNO dirname".
+    # Keys: dirname, Values: 2-tuple (ouput for start rev and end rev).
+    self.svnls_cache = {}
+    # SVN base URL is required to fetch files deleted in an older revision.
+    # Result is cached to not guess it over and over again in GetBaseFile().
+    required = self.options.download_base or self.options.revision is not None
+    self.svn_base = self._GuessBase(required)
+
+  def GuessBase(self, required):
+    """Wrapper for _GuessBase."""
+    return self.svn_base
+
+  def _GuessBase(self, required):
+    """Returns the SVN base URL.
+
+    Args:
+      required: If true, exits if the url can't be guessed, otherwise None is
+        returned.
+    """
+    info = RunShell(["svn", "info"])
+    for line in info.splitlines():
+      words = line.split()
+      if len(words) == 2 and words[0] == "URL:":
+        url = words[1]
+        scheme, netloc, path, params, query, fragment = urlparse.urlparse(url)
+        username, netloc = urllib.splituser(netloc)
+        if username:
+          logging.info("Removed username from base URL")
+        if netloc.endswith("svn.python.org"):
+          if netloc == "svn.python.org":
+            if path.startswith("/projects/"):
+              path = path[9:]
+          elif netloc != "pythondev@svn.python.org":
+            ErrorExit("Unrecognized Python URL: %s" % url)
+          base = "http://svn.python.org/view/*checkout*%s/" % path
+          logging.info("Guessed Python base = %s", base)
+        elif netloc.endswith("svn.collab.net"):
+          if path.startswith("/repos/"):
+            path = path[6:]
+          base = "http://svn.collab.net/viewvc/*checkout*%s/" % path
+          logging.info("Guessed CollabNet base = %s", base)
+        elif netloc.endswith(".googlecode.com"):
+          path = path + "/"
+          base = urlparse.urlunparse(("http", netloc, path, params,
+                                      query, fragment))
+          logging.info("Guessed Google Code base = %s", base)
+        else:
+          path = path + "/"
+          base = urlparse.urlunparse((scheme, netloc, path, params,
+                                      query, fragment))
+          logging.info("Guessed base = %s", base)
+        return base
+    if required:
+      ErrorExit("Can't find URL in output from svn info")
+    return None
+
+  def GenerateDiff(self, args):
+    cmd = ["svn", "diff"]
+    if self.options.revision:
+      cmd += ["-r", self.options.revision]
+    cmd.extend(args)
+    data = RunShell(cmd)
+    count = 0
+    for line in data.splitlines():
+      if line.startswith("Index:") or line.startswith("Property changes on:"):
+        count += 1
+        logging.info(line)
+    if not count:
+      ErrorExit("No valid patches found in output from svn diff")
+    return data
+
+  def _CollapseKeywords(self, content, keyword_str):
+    """Collapses SVN keywords."""
+    # svn cat translates keywords but svn diff doesn't. As a result of this
+    # behavior patching.PatchChunks() fails with a chunk mismatch error.
+    # This part was originally written by the Review Board development team
+    # who had the same problem (https://reviews.reviewboard.org/r/276/).
+    # Mapping of keywords to known aliases
+    svn_keywords = {
+      # Standard keywords
+      'Date':                ['Date', 'LastChangedDate'],
+      'Revision':            ['Revision', 'LastChangedRevision', 'Rev'],
+      'Author':              ['Author', 'LastChangedBy'],
+      'HeadURL':             ['HeadURL', 'URL'],
+      'Id':                  ['Id'],
+
+      # Aliases
+      'LastChangedDate':     ['LastChangedDate', 'Date'],
+      'LastChangedRevision': ['LastChangedRevision', 'Rev', 'Revision'],
+      'LastChangedBy':       ['LastChangedBy', 'Author'],
+      'URL':                 ['URL', 'HeadURL'],
+    }
+
+    def repl(m):
+       if m.group(2):
+         return "$%s::%s$" % (m.group(1), " " * len(m.group(3)))
+       return "$%s$" % m.group(1)
+    keywords = [keyword
+                for name in keyword_str.split(" ")
+                for keyword in svn_keywords.get(name, [])]
+    return re.sub(r"\$(%s):(:?)([^\$]+)\$" % '|'.join(keywords), repl, content)
+
+  def GetUnknownFiles(self):
+    status = RunShell(["svn", "status", "--ignore-externals"], silent_ok=True)
+    unknown_files = []
+    for line in status.split("\n"):
+      if line and line[0] == "?":
+        unknown_files.append(line)
+    return unknown_files
+
+  def ReadFile(self, filename):
+    """Returns the contents of a file."""
+    file = open(filename, 'rb')
+    result = ""
+    try:
+      result = file.read()
+    finally:
+      file.close()
+    return result
+
+  def GetStatus(self, filename):
+    """Returns the status of a file."""
+    if not self.options.revision:
+      status = RunShell(["svn", "status", "--ignore-externals", filename])
+      if not status:
+        ErrorExit("svn status returned no output for %s" % filename)
+      status_lines = status.splitlines()
+      # If file is in a cl, the output will begin with
+      # "\n--- Changelist 'cl_name':\n".  See
+      # https://web.archive.org/web/20090918234815/svn.collab.net/repos/svn/trunk/notes/changelist-design.txt
+      if (len(status_lines) == 3 and
+          not status_lines[0] and
+          status_lines[1].startswith("--- Changelist")):
+        status = status_lines[2]
+      else:
+        status = status_lines[0]
+    # If we have a revision to diff against we need to run "svn list"
+    # for the old and the new revision and compare the results to get
+    # the correct status for a file.
+    else:
+      dirname, relfilename = os.path.split(filename)
+      if dirname not in self.svnls_cache:
+        cmd = ["svn", "list", "-r", self.rev_start, dirname or "."]
+        out, returncode = RunShellWithReturnCode(cmd)
+        if returncode:
+          ErrorExit("Failed to get status for %s." % filename)
+        old_files = out.splitlines()
+        args = ["svn", "list"]
+        if self.rev_end:
+          args += ["-r", self.rev_end]
+        cmd = args + [dirname or "."]
+        out, returncode = RunShellWithReturnCode(cmd)
+        if returncode:
+          ErrorExit("Failed to run command %s" % cmd)
+        self.svnls_cache[dirname] = (old_files, out.splitlines())
+      old_files, new_files = self.svnls_cache[dirname]
+      if relfilename in old_files and relfilename not in new_files:
+        status = "D   "
+      elif relfilename in old_files and relfilename in new_files:
+        status = "M   "
+      else:
+        status = "A   "
+    return status
+
+  def GetBaseFile(self, filename):
+    status = self.GetStatus(filename)
+    base_content = None
+    new_content = None
+
+    # If a file is copied its status will be "A  +", which signifies
+    # "addition-with-history".  See "svn st" for more information.  We need to
+    # upload the original file or else diff parsing will fail if the file was
+    # edited.
+    if status[0] == "A" and status[3] != "+":
+      # We'll need to upload the new content if we're adding a binary file
+      # since diff's output won't contain it.
+      mimetype = RunShell(["svn", "propget", "svn:mime-type", filename],
+                          silent_ok=True)
+      base_content = ""
+      is_binary = mimetype and not mimetype.startswith("text/")
+      if is_binary and self.IsImage(filename):
+        new_content = self.ReadFile(filename)
+    elif (status[0] in ("M", "D", "R") or
+          (status[0] == "A" and status[3] == "+") or  # Copied file.
+          (status[0] == " " and status[1] == "M")):  # Property change.
+      args = []
+      if self.options.revision:
+        url = "%s/%s@%s" % (self.svn_base, filename, self.rev_start)
+      else:
+        # Don't change filename, it's needed later.
+        url = filename
+        args += ["-r", "BASE"]
+      cmd = ["svn"] + args + ["propget", "svn:mime-type", url]
+      mimetype, returncode = RunShellWithReturnCode(cmd)
+      if returncode:
+        # File does not exist in the requested revision.
+        # Reset mimetype, it contains an error message.
+        mimetype = ""
+      get_base = False
+      is_binary = mimetype and not mimetype.startswith("text/")
+      if status[0] == " ":
+        # Empty base content just to force an upload.
+        base_content = ""
+      elif is_binary:
+        if self.IsImage(filename):
+          get_base = True
+          if status[0] == "M":
+            if not self.rev_end:
+              new_content = self.ReadFile(filename)
+            else:
+              url = "%s/%s@%s" % (self.svn_base, filename, self.rev_end)
+              new_content = RunShell(["svn", "cat", url],
+                                     universal_newlines=True, silent_ok=True)
+        else:
+          base_content = ""
+      else:
+        get_base = True
+
+      if get_base:
+        if is_binary:
+          universal_newlines = False
+        else:
+          universal_newlines = True
+        if self.rev_start:
+          # "svn cat -r REV delete_file.txt" doesn't work. cat requires
+          # the full URL with "@REV" appended instead of using "-r" option.
+          url = "%s/%s@%s" % (self.svn_base, filename, self.rev_start)
+          base_content = RunShell(["svn", "cat", url],
+                                  universal_newlines=universal_newlines,
+                                  silent_ok=True)
+        else:
+          base_content = RunShell(["svn", "cat", filename],
+                                  universal_newlines=universal_newlines,
+                                  silent_ok=True)
+        if not is_binary:
+          args = []
+          if self.rev_start:
+            url = "%s/%s@%s" % (self.svn_base, filename, self.rev_start)
+          else:
+            url = filename
+            args += ["-r", "BASE"]
+          cmd = ["svn"] + args + ["propget", "svn:keywords", url]
+          keywords, returncode = RunShellWithReturnCode(cmd)
+          if keywords and not returncode:
+            base_content = self._CollapseKeywords(base_content, keywords)
+    else:
+      StatusUpdate("svn status returned unexpected output: %s" % status)
+      sys.exit(1)
+    return base_content, new_content, is_binary, status[0:5]
+
+
+class GitVCS(VersionControlSystem):
+  """Implementation of the VersionControlSystem interface for Git."""
+
+  def __init__(self, options):
+    super(GitVCS, self).__init__(options)
+    # Map of filename -> hash of base file.
+    self.base_hashes = {}
+
+  def GenerateDiff(self, extra_args):
+    # This is more complicated than svn's GenerateDiff because we must convert
+    # the diff output to include an svn-style "Index:" line as well as record
+    # the hashes of the base files, so we can upload them along with our diff.
+    if self.options.revision:
+      extra_args = [self.options.revision] + extra_args
+    gitdiff = RunShell(["git", "diff", "--full-index"] + extra_args)
+    svndiff = []
+    filecount = 0
+    filename = None
+    for line in gitdiff.splitlines():
+      match = re.match(r"diff --git a/(.*) b/.*$", line)
+      if match:
+        filecount += 1
+        filename = match.group(1)
+        svndiff.append("Index: %s\n" % filename)
+      else:
+        # The "index" line in a git diff looks like this (long hashes elided):
+        #   index 82c0d44..b2cee3f 100755
+        # We want to save the left hash, as that identifies the base file.
+        match = re.match(r"index (\w+)\.\.", line)
+        if match:
+          self.base_hashes[filename] = match.group(1)
+      svndiff.append(line + "\n")
+    if not filecount:
+      ErrorExit("No valid patches found in output from git diff")
+    return "".join(svndiff)
+
+  def GetUnknownFiles(self):
+    status = RunShell(["git", "ls-files", "--exclude-standard", "--others"],
+                      silent_ok=True)
+    return status.splitlines()
+
+  def GetBaseFile(self, filename):
+    hash = self.base_hashes[filename]
+    base_content = None
+    new_content = None
+    is_binary = False
+    if hash == "0" * 40:  # All-zero hash indicates no base file.
+      status = "A"
+      base_content = ""
+    else:
+      status = "M"
+      base_content, returncode = RunShellWithReturnCode(["git", "show", hash])
+      if returncode:
+        ErrorExit("Got error status from 'git show %s'" % hash)
+    return (base_content, new_content, is_binary, status)
+
+
+class MercurialVCS(VersionControlSystem):
+  """Implementation of the VersionControlSystem interface for Mercurial."""
+
+  def __init__(self, options, repo_dir):
+    super(MercurialVCS, self).__init__(options)
+    # Absolute path to repository (we can be in a subdir)
+    self.repo_dir = os.path.normpath(repo_dir)
+    # Compute the subdir
+    cwd = os.path.normpath(os.getcwd())
+    assert cwd.startswith(self.repo_dir)
+    self.subdir = cwd[len(self.repo_dir):].lstrip(r"\/")
+    if self.options.revision:
+      self.base_rev = self.options.revision
+    else:
+      self.base_rev = RunShell(["hg", "parent", "-q"]).split(':')[1].strip()
+
+  def _GetRelPath(self, filename):
+    """Get relative path of a file according to the current directory,
+    given its logical path in the repo."""
+    assert filename.startswith(self.subdir), filename
+    return filename[len(self.subdir):].lstrip(r"\/")
+
+  def GenerateDiff(self, extra_args):
+    # If no file specified, restrict to the current subdir
+    extra_args = extra_args or ["."]
+    cmd = ["hg", "diff", "--git", "-r", self.base_rev] + extra_args
+    data = RunShell(cmd, silent_ok=True)
+    svndiff = []
+    filecount = 0
+    for line in data.splitlines():
+      m = re.match("diff --git a/(\S+) b/(\S+)", line)
+      if m:
+        # Modify line to make it look like as it comes from svn diff.
+        # With this modification no changes on the server side are required
+        # to make upload.py work with Mercurial repos.
+        # NOTE: for proper handling of moved/copied files, we have to use
+        # the second filename.
+        filename = m.group(2)
+        svndiff.append("Index: %s" % filename)
+        svndiff.append("=" * 67)
+        filecount += 1
+        logging.info(line)
+      else:
+        svndiff.append(line)
+    if not filecount:
+      ErrorExit("No valid patches found in output from hg diff")
+    return "\n".join(svndiff) + "\n"
+
+  def GetUnknownFiles(self):
+    """Return a list of files unknown to the VCS."""
+    args = []
+    status = RunShell(["hg", "status", "--rev", self.base_rev, "-u", "."],
+        silent_ok=True)
+    unknown_files = []
+    for line in status.splitlines():
+      st, fn = line.split(" ", 1)
+      if st == "?":
+        unknown_files.append(fn)
+    return unknown_files
+
+  def GetBaseFile(self, filename):
+    # "hg status" and "hg cat" both take a path relative to the current subdir
+    # rather than to the repo root, but "hg diff" has given us the full path
+    # to the repo root.
+    base_content = ""
+    new_content = None
+    is_binary = False
+    oldrelpath = relpath = self._GetRelPath(filename)
+    # "hg status -C" returns two lines for moved/copied files, one otherwise
+    out = RunShell(["hg", "status", "-C", "--rev", self.base_rev, relpath])
+    out = out.splitlines()
+    # HACK: strip error message about missing file/directory if it isn't in
+    # the working copy
+    if out[0].startswith('%s: ' % relpath):
+      out = out[1:]
+    if len(out) > 1:
+      # Moved/copied => considered as modified, use old filename to
+      # retrieve base contents
+      oldrelpath = out[1].strip()
+      status = "M"
+    else:
+      status, _ = out[0].split(' ', 1)
+    if status != "A":
+      base_content = RunShell(["hg", "cat", "-r", self.base_rev, oldrelpath],
+        silent_ok=True)
+      is_binary = "\0" in base_content  # Mercurial's heuristic
+    if status != "R":
+      new_content = open(relpath, "rb").read()
+      is_binary = is_binary or "\0" in new_content
+    if is_binary and base_content:
+      # Fetch again without converting newlines
+      base_content = RunShell(["hg", "cat", "-r", self.base_rev, oldrelpath],
+        silent_ok=True, universal_newlines=False)
+    if not is_binary or not self.IsImage(relpath):
+      new_content = None
+    return base_content, new_content, is_binary, status
+
+
+# NOTE: The SplitPatch function is duplicated in engine.py, keep them in sync.
+def SplitPatch(data):
+  """Splits a patch into separate pieces for each file.
+
+  Args:
+    data: A string containing the output of svn diff.
+
+  Returns:
+    A list of 2-tuple (filename, text) where text is the svn diff output
+      pertaining to filename.
+  """
+  patches = []
+  filename = None
+  diff = []
+  for line in data.splitlines(True):
+    new_filename = None
+    if line.startswith('Index:'):
+      unused, new_filename = line.split(':', 1)
+      new_filename = new_filename.strip()
+    elif line.startswith('Property changes on:'):
+      unused, temp_filename = line.split(':', 1)
+      # When a file is modified, paths use '/' between directories, however
+      # when a property is modified '\' is used on Windows.  Make them the same
+      # otherwise the file shows up twice.
+      temp_filename = temp_filename.strip().replace('\\', '/')
+      if temp_filename != filename:
+        # File has property changes but no modifications, create a new diff.
+        new_filename = temp_filename
+    if new_filename:
+      if filename and diff:
+        patches.append((filename, ''.join(diff)))
+      filename = new_filename
+      diff = [line]
+      continue
+    if diff is not None:
+      diff.append(line)
+  if filename and diff:
+    patches.append((filename, ''.join(diff)))
+  return patches
+
+
+def UploadSeparatePatches(issue, rpc_server, patchset, data, options):
+  """Uploads a separate patch for each file in the diff output.
+
+  Returns a list of [patch_key, filename] for each file.
+  """
+  patches = SplitPatch(data)
+  rv = []
+  for patch in patches:
+    if len(patch[1]) > MAX_UPLOAD_SIZE:
+      print ("Not uploading the patch for " + patch[0] +
+             " because the file is too large.")
+      continue
+    form_fields = [("filename", patch[0])]
+    if not options.download_base:
+      form_fields.append(("content_upload", "1"))
+    files = [("data", "data.diff", patch[1])]
+    ctype, body = EncodeMultipartFormData(form_fields, files)
+    url = "/%d/upload_patch/%d" % (int(issue), int(patchset))
+    print "Uploading patch for " + patch[0]
+    response_body = rpc_server.Send(url, body, content_type=ctype)
+    lines = response_body.splitlines()
+    if not lines or lines[0] != "OK":
+      StatusUpdate("  --> %s" % response_body)
+      sys.exit(1)
+    rv.append([lines[1], patch[0]])
+  return rv
+
+
+def GuessVCS(options):
+  """Helper to guess the version control system.
+
+  This examines the current directory, guesses which VersionControlSystem
+  we're using, and returns an instance of the appropriate class.  Exit with an
+  error if we can't figure it out.
+
+  Returns:
+    A VersionControlSystem instance. Exits if the VCS can't be guessed.
+  """
+  # Mercurial has a command to get the base directory of a repository
+  # Try running it, but don't die if we don't have hg installed.
+  # NOTE: we try Mercurial first as it can sit on top of an SVN working copy.
+  try:
+    out, returncode = RunShellWithReturnCode(["hg", "root"])
+    if returncode == 0:
+      return MercurialVCS(options, out.strip())
+  except OSError, (errno, message):
+    if errno != 2:  # ENOENT -- they don't have hg installed.
+      raise
+
+  # Subversion has a .svn in all working directories.
+  if os.path.isdir('.svn'):
+    logging.info("Guessed VCS = Subversion")
+    return SubversionVCS(options)
+
+  # Git has a command to test if you're in a git tree.
+  # Try running it, but don't die if we don't have git installed.
+  try:
+    out, returncode = RunShellWithReturnCode(["git", "rev-parse",
+                                              "--is-inside-work-tree"])
+    if returncode == 0:
+      return GitVCS(options)
+  except OSError, (errno, message):
+    if errno != 2:  # ENOENT -- they don't have git installed.
+      raise
+
+  ErrorExit(("Could not guess version control system. "
+             "Are you in a working copy directory?"))
+
+
+def RealMain(argv, data=None):
+  """The real main function.
+
+  Args:
+    argv: Command line arguments.
+    data: Diff contents. If None (default) the diff is generated by
+      the VersionControlSystem implementation returned by GuessVCS().
+
+  Returns:
+    A 2-tuple (issue id, patchset id).
+    The patchset id is None if the base files are not uploaded by this
+    script (applies only to SVN checkouts).
+  """
+  logging.basicConfig(format=("%(asctime).19s %(levelname)s %(filename)s:"
+                              "%(lineno)s %(message)s "))
+  os.environ['LC_ALL'] = 'C'
+  options, args = parser.parse_args(argv[1:])
+  global verbosity
+  verbosity = options.verbose
+  if verbosity >= 3:
+    logging.getLogger().setLevel(logging.DEBUG)
+  elif verbosity >= 2:
+    logging.getLogger().setLevel(logging.INFO)
+  vcs = GuessVCS(options)
+  if isinstance(vcs, SubversionVCS):
+    # base field is only allowed for Subversion.
+    # Note: Fetching base files may become deprecated in future releases.
+    base = vcs.GuessBase(options.download_base)
+  else:
+    base = None
+  if not base and options.download_base:
+    options.download_base = True
+    logging.info("Enabled upload of base file")
+  if not options.assume_yes:
+    vcs.CheckForUnknownFiles()
+  if data is None:
+    data = vcs.GenerateDiff(args)
+  files = vcs.GetBaseFiles(data)
+  if verbosity >= 1:
+    print "Upload server:", options.server, "(change with -s/--server)"
+  if options.issue:
+    prompt = "Message describing this patch set: "
+  else:
+    prompt = "New issue subject: "
+  message = options.message or raw_input(prompt).strip()
+  if not message:
+    ErrorExit("A non-empty message is required")
+  rpc_server = GetRpcServer(options)
+  form_fields = [("subject", message)]
+  if base:
+    form_fields.append(("base", base))
+  if options.issue:
+    form_fields.append(("issue", str(options.issue)))
+  if options.email:
+    form_fields.append(("user", options.email))
+  if options.reviewers:
+    for reviewer in options.reviewers.split(','):
+      if "@" in reviewer and not reviewer.split("@")[1].count(".") == 1:
+        ErrorExit("Invalid email address: %s" % reviewer)
+    form_fields.append(("reviewers", options.reviewers))
+  if options.cc:
+    for cc in options.cc.split(','):
+      if "@" in cc and not cc.split("@")[1].count(".") == 1:
+        ErrorExit("Invalid email address: %s" % cc)
+    form_fields.append(("cc", options.cc))
+  description = options.description
+  if options.description_file:
+    if options.description:
+      ErrorExit("Can't specify description and description_file")
+    file = open(options.description_file, 'r')
+    description = file.read()
+    file.close()
+  if description:
+    form_fields.append(("description", description))
+  # Send a hash of all the base file so the server can determine if a copy
+  # already exists in an earlier patchset.
+  base_hashes = ""
+  for file, info in files.iteritems():
+    if not info[0] is None:
+      checksum = md5.new(info[0]).hexdigest()
+      if base_hashes:
+        base_hashes += "|"
+      base_hashes += checksum + ":" + file
+  form_fields.append(("base_hashes", base_hashes))
+  # If we're uploading base files, don't send the email before the uploads, so
+  # that it contains the file status.
+  if options.send_mail and options.download_base:
+    form_fields.append(("send_mail", "1"))
+  if not options.download_base:
+    form_fields.append(("content_upload", "1"))
+  if len(data) > MAX_UPLOAD_SIZE:
+    print "Patch is large, so uploading file patches separately."
+    uploaded_diff_file = []
+    form_fields.append(("separate_patches", "1"))
+  else:
+    uploaded_diff_file = [("data", "data.diff", data)]
+  ctype, body = EncodeMultipartFormData(form_fields, uploaded_diff_file)
+  response_body = rpc_server.Send("/upload", body, content_type=ctype)
+  patchset = None
+  if not options.download_base or not uploaded_diff_file:
+    lines = response_body.splitlines()
+    if len(lines) >= 2:
+      msg = lines[0]
+      patchset = lines[1].strip()
+      patches = [x.split(" ", 1) for x in lines[2:]]
+    else:
+      msg = response_body
+  else:
+    msg = response_body
+  StatusUpdate(msg)
+  if not response_body.startswith("Issue created.") and \
+  not response_body.startswith("Issue updated."):
+    sys.exit(0)
+  issue = msg[msg.rfind("/")+1:]
+
+  if not uploaded_diff_file:
+    result = UploadSeparatePatches(issue, rpc_server, patchset, data, options)
+    if not options.download_base:
+      patches = result
+
+  if not options.download_base:
+    vcs.UploadBaseFiles(issue, rpc_server, patches, patchset, options, files)
+    if options.send_mail:
+      rpc_server.Send("/" + issue + "/mail", payload="")
+  return issue, patchset
+
+
+def main():
+  try:
+    RealMain(sys.argv)
+  except KeyboardInterrupt:
+    print
+    StatusUpdate("Interrupted.")
+    sys.exit(1)
+
+
+if __name__ == "__main__":
+  main()
diff --git a/build/_deps/googletest-src/googlemock/scripts/upload_gmock.py b/build/_deps/googletest-src/googlemock/scripts/upload_gmock.py
new file mode 100755
index 0000000000000000000000000000000000000000..5dc484b3912bc03bc60dc905ab56f2c11f2b7339
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/scripts/upload_gmock.py
@@ -0,0 +1,78 @@
+#!/usr/bin/env python
+#
+# Copyright 2009, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""upload_gmock.py v0.1.0 -- uploads a Google Mock patch for review.
+
+This simple wrapper passes all command line flags and
+--cc=googlemock@googlegroups.com to upload.py.
+
+USAGE: upload_gmock.py [options for upload.py]
+"""
+
+__author__ = 'wan@google.com (Zhanyong Wan)'
+
+import os
+import sys
+
+CC_FLAG = '--cc='
+GMOCK_GROUP = 'googlemock@googlegroups.com'
+
+
+def main():
+  # Finds the path to upload.py, assuming it is in the same directory
+  # as this file.
+  my_dir = os.path.dirname(os.path.abspath(__file__))
+  upload_py_path = os.path.join(my_dir, 'upload.py')
+
+  # Adds Google Mock discussion group to the cc line if it's not there
+  # already.
+  upload_py_argv = [upload_py_path]
+  found_cc_flag = False
+  for arg in sys.argv[1:]:
+    if arg.startswith(CC_FLAG):
+      found_cc_flag = True
+      cc_line = arg[len(CC_FLAG):]
+      cc_list = [addr for addr in cc_line.split(',') if addr]
+      if GMOCK_GROUP not in cc_list:
+        cc_list.append(GMOCK_GROUP)
+      upload_py_argv.append(CC_FLAG + ','.join(cc_list))
+    else:
+      upload_py_argv.append(arg)
+
+  if not found_cc_flag:
+    upload_py_argv.append(CC_FLAG + GMOCK_GROUP)
+
+  # Invokes upload.py with the modified command line flags.
+  os.execv(upload_py_path, upload_py_argv)
+
+
+if __name__ == '__main__':
+  main()
diff --git a/build/_deps/googletest-src/googlemock/src/gmock-all.cc b/build/_deps/googletest-src/googlemock/src/gmock-all.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e43c9b7b4c15b3c6451bbe9bac97f08376e8db65
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/src/gmock-all.cc
@@ -0,0 +1,46 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Google C++ Mocking Framework (Google Mock)
+//
+// This file #includes all Google Mock implementation .cc files.  The
+// purpose is to allow a user to build Google Mock by compiling this
+// file alone.
+
+// This line ensures that gmock.h can be compiled on its own, even
+// when it's fused.
+#include "gmock/gmock.h"
+
+// The following lines pull in the real gmock *.cc files.
+#include "src/gmock-cardinalities.cc"
+#include "src/gmock-internal-utils.cc"
+#include "src/gmock-matchers.cc"
+#include "src/gmock-spec-builders.cc"
+#include "src/gmock.cc"
diff --git a/build/_deps/googletest-src/googlemock/src/gmock-cardinalities.cc b/build/_deps/googletest-src/googlemock/src/gmock-cardinalities.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7463f4383233c315e128dc577a3c74cec23c8b34
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/src/gmock-cardinalities.cc
@@ -0,0 +1,155 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements cardinalities.
+
+#include "gmock/gmock-cardinalities.h"
+
+#include <limits.h>
+#include <ostream>  // NOLINT
+#include <sstream>
+#include <string>
+#include "gmock/internal/gmock-internal-utils.h"
+#include "gtest/gtest.h"
+
+namespace testing {
+
+namespace {
+
+// Implements the Between(m, n) cardinality.
+class BetweenCardinalityImpl : public CardinalityInterface {
+ public:
+  BetweenCardinalityImpl(int min, int max)
+      : min_(min >= 0 ? min : 0),
+        max_(max >= min_ ? max : min_) {
+    std::stringstream ss;
+    if (min < 0) {
+      ss << "The invocation lower bound must be >= 0, "
+         << "but is actually " << min << ".";
+      internal::Expect(false, __FILE__, __LINE__, ss.str());
+    } else if (max < 0) {
+      ss << "The invocation upper bound must be >= 0, "
+         << "but is actually " << max << ".";
+      internal::Expect(false, __FILE__, __LINE__, ss.str());
+    } else if (min > max) {
+      ss << "The invocation upper bound (" << max
+         << ") must be >= the invocation lower bound (" << min
+         << ").";
+      internal::Expect(false, __FILE__, __LINE__, ss.str());
+    }
+  }
+
+  // Conservative estimate on the lower/upper bound of the number of
+  // calls allowed.
+  int ConservativeLowerBound() const override { return min_; }
+  int ConservativeUpperBound() const override { return max_; }
+
+  bool IsSatisfiedByCallCount(int call_count) const override {
+    return min_ <= call_count && call_count <= max_;
+  }
+
+  bool IsSaturatedByCallCount(int call_count) const override {
+    return call_count >= max_;
+  }
+
+  void DescribeTo(::std::ostream* os) const override;
+
+ private:
+  const int min_;
+  const int max_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(BetweenCardinalityImpl);
+};
+
+// Formats "n times" in a human-friendly way.
+inline std::string FormatTimes(int n) {
+  if (n == 1) {
+    return "once";
+  } else if (n == 2) {
+    return "twice";
+  } else {
+    std::stringstream ss;
+    ss << n << " times";
+    return ss.str();
+  }
+}
+
+// Describes the Between(m, n) cardinality in human-friendly text.
+void BetweenCardinalityImpl::DescribeTo(::std::ostream* os) const {
+  if (min_ == 0) {
+    if (max_ == 0) {
+      *os << "never called";
+    } else if (max_ == INT_MAX) {
+      *os << "called any number of times";
+    } else {
+      *os << "called at most " << FormatTimes(max_);
+    }
+  } else if (min_ == max_) {
+    *os << "called " << FormatTimes(min_);
+  } else if (max_ == INT_MAX) {
+    *os << "called at least " << FormatTimes(min_);
+  } else {
+    // 0 < min_ < max_ < INT_MAX
+    *os << "called between " << min_ << " and " << max_ << " times";
+  }
+}
+
+}  // Unnamed namespace
+
+// Describes the given call count to an ostream.
+void Cardinality::DescribeActualCallCountTo(int actual_call_count,
+                                            ::std::ostream* os) {
+  if (actual_call_count > 0) {
+    *os << "called " << FormatTimes(actual_call_count);
+  } else {
+    *os << "never called";
+  }
+}
+
+// Creates a cardinality that allows at least n calls.
+GTEST_API_ Cardinality AtLeast(int n) { return Between(n, INT_MAX); }
+
+// Creates a cardinality that allows at most n calls.
+GTEST_API_ Cardinality AtMost(int n) { return Between(0, n); }
+
+// Creates a cardinality that allows any number of calls.
+GTEST_API_ Cardinality AnyNumber() { return AtLeast(0); }
+
+// Creates a cardinality that allows between min and max calls.
+GTEST_API_ Cardinality Between(int min, int max) {
+  return Cardinality(new BetweenCardinalityImpl(min, max));
+}
+
+// Creates a cardinality that allows exactly n calls.
+GTEST_API_ Cardinality Exactly(int n) { return Between(n, n); }
+
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googlemock/src/gmock-internal-utils.cc b/build/_deps/googletest-src/googlemock/src/gmock-internal-utils.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e5b547981d14d47fa49132d49cd3e950ae0c30fd
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/src/gmock-internal-utils.cc
@@ -0,0 +1,200 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file defines some utilities useful for implementing Google
+// Mock.  They are subject to change without notice, so please DO NOT
+// USE THEM IN USER CODE.
+
+#include "gmock/internal/gmock-internal-utils.h"
+
+#include <ctype.h>
+#include <ostream>  // NOLINT
+#include <string>
+#include "gmock/gmock.h"
+#include "gmock/internal/gmock-port.h"
+#include "gtest/gtest.h"
+
+namespace testing {
+namespace internal {
+
+// Joins a vector of strings as if they are fields of a tuple; returns
+// the joined string.
+GTEST_API_ std::string JoinAsTuple(const Strings& fields) {
+  switch (fields.size()) {
+    case 0:
+      return "";
+    case 1:
+      return fields[0];
+    default:
+      std::string result = "(" + fields[0];
+      for (size_t i = 1; i < fields.size(); i++) {
+        result += ", ";
+        result += fields[i];
+      }
+      result += ")";
+      return result;
+  }
+}
+
+// Converts an identifier name to a space-separated list of lower-case
+// words.  Each maximum substring of the form [A-Za-z][a-z]*|\d+ is
+// treated as one word.  For example, both "FooBar123" and
+// "foo_bar_123" are converted to "foo bar 123".
+GTEST_API_ std::string ConvertIdentifierNameToWords(const char* id_name) {
+  std::string result;
+  char prev_char = '\0';
+  for (const char* p = id_name; *p != '\0'; prev_char = *(p++)) {
+    // We don't care about the current locale as the input is
+    // guaranteed to be a valid C++ identifier name.
+    const bool starts_new_word = IsUpper(*p) ||
+        (!IsAlpha(prev_char) && IsLower(*p)) ||
+        (!IsDigit(prev_char) && IsDigit(*p));
+
+    if (IsAlNum(*p)) {
+      if (starts_new_word && result != "")
+        result += ' ';
+      result += ToLower(*p);
+    }
+  }
+  return result;
+}
+
+// This class reports Google Mock failures as Google Test failures.  A
+// user can define another class in a similar fashion if they intend to
+// use Google Mock with a testing framework other than Google Test.
+class GoogleTestFailureReporter : public FailureReporterInterface {
+ public:
+  void ReportFailure(FailureType type, const char* file, int line,
+                     const std::string& message) override {
+    AssertHelper(type == kFatal ?
+                 TestPartResult::kFatalFailure :
+                 TestPartResult::kNonFatalFailure,
+                 file,
+                 line,
+                 message.c_str()) = Message();
+    if (type == kFatal) {
+      posix::Abort();
+    }
+  }
+};
+
+// Returns the global failure reporter.  Will create a
+// GoogleTestFailureReporter and return it the first time called.
+GTEST_API_ FailureReporterInterface* GetFailureReporter() {
+  // Points to the global failure reporter used by Google Mock.  gcc
+  // guarantees that the following use of failure_reporter is
+  // thread-safe.  We may need to add additional synchronization to
+  // protect failure_reporter if we port Google Mock to other
+  // compilers.
+  static FailureReporterInterface* const failure_reporter =
+      new GoogleTestFailureReporter();
+  return failure_reporter;
+}
+
+// Protects global resources (stdout in particular) used by Log().
+static GTEST_DEFINE_STATIC_MUTEX_(g_log_mutex);
+
+// Returns true if and only if a log with the given severity is visible
+// according to the --gmock_verbose flag.
+GTEST_API_ bool LogIsVisible(LogSeverity severity) {
+  if (GMOCK_FLAG(verbose) == kInfoVerbosity) {
+    // Always show the log if --gmock_verbose=info.
+    return true;
+  } else if (GMOCK_FLAG(verbose) == kErrorVerbosity) {
+    // Always hide it if --gmock_verbose=error.
+    return false;
+  } else {
+    // If --gmock_verbose is neither "info" nor "error", we treat it
+    // as "warning" (its default value).
+    return severity == kWarning;
+  }
+}
+
+// Prints the given message to stdout if and only if 'severity' >= the level
+// specified by the --gmock_verbose flag.  If stack_frames_to_skip >=
+// 0, also prints the stack trace excluding the top
+// stack_frames_to_skip frames.  In opt mode, any positive
+// stack_frames_to_skip is treated as 0, since we don't know which
+// function calls will be inlined by the compiler and need to be
+// conservative.
+GTEST_API_ void Log(LogSeverity severity, const std::string& message,
+                    int stack_frames_to_skip) {
+  if (!LogIsVisible(severity))
+    return;
+
+  // Ensures that logs from different threads don't interleave.
+  MutexLock l(&g_log_mutex);
+
+  if (severity == kWarning) {
+    // Prints a GMOCK WARNING marker to make the warnings easily searchable.
+    std::cout << "\nGMOCK WARNING:";
+  }
+  // Pre-pends a new-line to message if it doesn't start with one.
+  if (message.empty() || message[0] != '\n') {
+    std::cout << "\n";
+  }
+  std::cout << message;
+  if (stack_frames_to_skip >= 0) {
+#ifdef NDEBUG
+    // In opt mode, we have to be conservative and skip no stack frame.
+    const int actual_to_skip = 0;
+#else
+    // In dbg mode, we can do what the caller tell us to do (plus one
+    // for skipping this function's stack frame).
+    const int actual_to_skip = stack_frames_to_skip + 1;
+#endif  // NDEBUG
+
+    // Appends a new-line to message if it doesn't end with one.
+    if (!message.empty() && *message.rbegin() != '\n') {
+      std::cout << "\n";
+    }
+    std::cout << "Stack trace:\n"
+         << ::testing::internal::GetCurrentOsStackTraceExceptTop(
+             ::testing::UnitTest::GetInstance(), actual_to_skip);
+  }
+  std::cout << ::std::flush;
+}
+
+GTEST_API_ WithoutMatchers GetWithoutMatchers() { return WithoutMatchers(); }
+
+GTEST_API_ void IllegalDoDefault(const char* file, int line) {
+  internal::Assert(
+      false, file, line,
+      "You are using DoDefault() inside a composite action like "
+      "DoAll() or WithArgs().  This is not supported for technical "
+      "reasons.  Please instead spell out the default action, or "
+      "assign the default action to an Action variable and use "
+      "the variable in various places.");
+}
+
+}  // namespace internal
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googlemock/src/gmock-matchers.cc b/build/_deps/googletest-src/googlemock/src/gmock-matchers.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4a3f7af2351ded2cb40ec83389d0f24d1456de9a
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/src/gmock-matchers.cc
@@ -0,0 +1,462 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements Matcher<const string&>, Matcher<string>, and
+// utilities for defining matchers.
+
+#include "gmock/gmock-matchers.h"
+#include "gmock/gmock-generated-matchers.h"
+
+#include <string.h>
+#include <iostream>
+#include <sstream>
+#include <string>
+
+namespace testing {
+namespace internal {
+
+// Returns the description for a matcher defined using the MATCHER*()
+// macro where the user-supplied description string is "", if
+// 'negation' is false; otherwise returns the description of the
+// negation of the matcher.  'param_values' contains a list of strings
+// that are the print-out of the matcher's parameters.
+GTEST_API_ std::string FormatMatcherDescription(bool negation,
+                                                const char* matcher_name,
+                                                const Strings& param_values) {
+  std::string result = ConvertIdentifierNameToWords(matcher_name);
+  if (param_values.size() >= 1) result += " " + JoinAsTuple(param_values);
+  return negation ? "not (" + result + ")" : result;
+}
+
+// FindMaxBipartiteMatching and its helper class.
+//
+// Uses the well-known Ford-Fulkerson max flow method to find a maximum
+// bipartite matching. Flow is considered to be from left to right.
+// There is an implicit source node that is connected to all of the left
+// nodes, and an implicit sink node that is connected to all of the
+// right nodes. All edges have unit capacity.
+//
+// Neither the flow graph nor the residual flow graph are represented
+// explicitly. Instead, they are implied by the information in 'graph' and
+// a vector<int> called 'left_' whose elements are initialized to the
+// value kUnused. This represents the initial state of the algorithm,
+// where the flow graph is empty, and the residual flow graph has the
+// following edges:
+//   - An edge from source to each left_ node
+//   - An edge from each right_ node to sink
+//   - An edge from each left_ node to each right_ node, if the
+//     corresponding edge exists in 'graph'.
+//
+// When the TryAugment() method adds a flow, it sets left_[l] = r for some
+// nodes l and r. This induces the following changes:
+//   - The edges (source, l), (l, r), and (r, sink) are added to the
+//     flow graph.
+//   - The same three edges are removed from the residual flow graph.
+//   - The reverse edges (l, source), (r, l), and (sink, r) are added
+//     to the residual flow graph, which is a directional graph
+//     representing unused flow capacity.
+//
+// When the method augments a flow (moving left_[l] from some r1 to some
+// other r2), this can be thought of as "undoing" the above steps with
+// respect to r1 and "redoing" them with respect to r2.
+//
+// It bears repeating that the flow graph and residual flow graph are
+// never represented explicitly, but can be derived by looking at the
+// information in 'graph' and in left_.
+//
+// As an optimization, there is a second vector<int> called right_ which
+// does not provide any new information. Instead, it enables more
+// efficient queries about edges entering or leaving the right-side nodes
+// of the flow or residual flow graphs. The following invariants are
+// maintained:
+//
+// left[l] == kUnused or right[left[l]] == l
+// right[r] == kUnused or left[right[r]] == r
+//
+// . [ source ]                                        .
+// .   |||                                             .
+// .   |||                                             .
+// .   ||\--> left[0]=1  ---\    right[0]=-1 ----\     .
+// .   ||                   |                    |     .
+// .   |\---> left[1]=-1    \--> right[1]=0  ---\|     .
+// .   |                                        ||     .
+// .   \----> left[2]=2  ------> right[2]=2  --\||     .
+// .                                           |||     .
+// .         elements           matchers       vvv     .
+// .                                         [ sink ]  .
+//
+// See Also:
+//   [1] Cormen, et al (2001). "Section 26.2: The Ford-Fulkerson method".
+//       "Introduction to Algorithms (Second ed.)", pp. 651-664.
+//   [2] "Ford-Fulkerson algorithm", Wikipedia,
+//       'http://en.wikipedia.org/wiki/Ford%E2%80%93Fulkerson_algorithm'
+class MaxBipartiteMatchState {
+ public:
+  explicit MaxBipartiteMatchState(const MatchMatrix& graph)
+      : graph_(&graph),
+        left_(graph_->LhsSize(), kUnused),
+        right_(graph_->RhsSize(), kUnused) {}
+
+  // Returns the edges of a maximal match, each in the form {left, right}.
+  ElementMatcherPairs Compute() {
+    // 'seen' is used for path finding { 0: unseen, 1: seen }.
+    ::std::vector<char> seen;
+    // Searches the residual flow graph for a path from each left node to
+    // the sink in the residual flow graph, and if one is found, add flow
+    // to the graph. It's okay to search through the left nodes once. The
+    // edge from the implicit source node to each previously-visited left
+    // node will have flow if that left node has any path to the sink
+    // whatsoever. Subsequent augmentations can only add flow to the
+    // network, and cannot take away that previous flow unit from the source.
+    // Since the source-to-left edge can only carry one flow unit (or,
+    // each element can be matched to only one matcher), there is no need
+    // to visit the left nodes more than once looking for augmented paths.
+    // The flow is known to be possible or impossible by looking at the
+    // node once.
+    for (size_t ilhs = 0; ilhs < graph_->LhsSize(); ++ilhs) {
+      // Reset the path-marking vector and try to find a path from
+      // source to sink starting at the left_[ilhs] node.
+      GTEST_CHECK_(left_[ilhs] == kUnused)
+          << "ilhs: " << ilhs << ", left_[ilhs]: " << left_[ilhs];
+      // 'seen' initialized to 'graph_->RhsSize()' copies of 0.
+      seen.assign(graph_->RhsSize(), 0);
+      TryAugment(ilhs, &seen);
+    }
+    ElementMatcherPairs result;
+    for (size_t ilhs = 0; ilhs < left_.size(); ++ilhs) {
+      size_t irhs = left_[ilhs];
+      if (irhs == kUnused) continue;
+      result.push_back(ElementMatcherPair(ilhs, irhs));
+    }
+    return result;
+  }
+
+ private:
+  static const size_t kUnused = static_cast<size_t>(-1);
+
+  // Perform a depth-first search from left node ilhs to the sink.  If a
+  // path is found, flow is added to the network by linking the left and
+  // right vector elements corresponding each segment of the path.
+  // Returns true if a path to sink was found, which means that a unit of
+  // flow was added to the network. The 'seen' vector elements correspond
+  // to right nodes and are marked to eliminate cycles from the search.
+  //
+  // Left nodes will only be explored at most once because they
+  // are accessible from at most one right node in the residual flow
+  // graph.
+  //
+  // Note that left_[ilhs] is the only element of left_ that TryAugment will
+  // potentially transition from kUnused to another value. Any other
+  // left_ element holding kUnused before TryAugment will be holding it
+  // when TryAugment returns.
+  //
+  bool TryAugment(size_t ilhs, ::std::vector<char>* seen) {
+    for (size_t irhs = 0; irhs < graph_->RhsSize(); ++irhs) {
+      if ((*seen)[irhs]) continue;
+      if (!graph_->HasEdge(ilhs, irhs)) continue;
+      // There's an available edge from ilhs to irhs.
+      (*seen)[irhs] = 1;
+      // Next a search is performed to determine whether
+      // this edge is a dead end or leads to the sink.
+      //
+      // right_[irhs] == kUnused means that there is residual flow from
+      // right node irhs to the sink, so we can use that to finish this
+      // flow path and return success.
+      //
+      // Otherwise there is residual flow to some ilhs. We push flow
+      // along that path and call ourselves recursively to see if this
+      // ultimately leads to sink.
+      if (right_[irhs] == kUnused || TryAugment(right_[irhs], seen)) {
+        // Add flow from left_[ilhs] to right_[irhs].
+        left_[ilhs] = irhs;
+        right_[irhs] = ilhs;
+        return true;
+      }
+    }
+    return false;
+  }
+
+  const MatchMatrix* graph_;  // not owned
+  // Each element of the left_ vector represents a left hand side node
+  // (i.e. an element) and each element of right_ is a right hand side
+  // node (i.e. a matcher). The values in the left_ vector indicate
+  // outflow from that node to a node on the right_ side. The values
+  // in the right_ indicate inflow, and specify which left_ node is
+  // feeding that right_ node, if any. For example, left_[3] == 1 means
+  // there's a flow from element #3 to matcher #1. Such a flow would also
+  // be redundantly represented in the right_ vector as right_[1] == 3.
+  // Elements of left_ and right_ are either kUnused or mutually
+  // referent. Mutually referent means that left_[right_[i]] = i and
+  // right_[left_[i]] = i.
+  ::std::vector<size_t> left_;
+  ::std::vector<size_t> right_;
+
+  GTEST_DISALLOW_ASSIGN_(MaxBipartiteMatchState);
+};
+
+const size_t MaxBipartiteMatchState::kUnused;
+
+GTEST_API_ ElementMatcherPairs FindMaxBipartiteMatching(const MatchMatrix& g) {
+  return MaxBipartiteMatchState(g).Compute();
+}
+
+static void LogElementMatcherPairVec(const ElementMatcherPairs& pairs,
+                                     ::std::ostream* stream) {
+  typedef ElementMatcherPairs::const_iterator Iter;
+  ::std::ostream& os = *stream;
+  os << "{";
+  const char* sep = "";
+  for (Iter it = pairs.begin(); it != pairs.end(); ++it) {
+    os << sep << "\n  ("
+       << "element #" << it->first << ", "
+       << "matcher #" << it->second << ")";
+    sep = ",";
+  }
+  os << "\n}";
+}
+
+bool MatchMatrix::NextGraph() {
+  for (size_t ilhs = 0; ilhs < LhsSize(); ++ilhs) {
+    for (size_t irhs = 0; irhs < RhsSize(); ++irhs) {
+      char& b = matched_[SpaceIndex(ilhs, irhs)];
+      if (!b) {
+        b = 1;
+        return true;
+      }
+      b = 0;
+    }
+  }
+  return false;
+}
+
+void MatchMatrix::Randomize() {
+  for (size_t ilhs = 0; ilhs < LhsSize(); ++ilhs) {
+    for (size_t irhs = 0; irhs < RhsSize(); ++irhs) {
+      char& b = matched_[SpaceIndex(ilhs, irhs)];
+      b = static_cast<char>(rand() & 1);  // NOLINT
+    }
+  }
+}
+
+std::string MatchMatrix::DebugString() const {
+  ::std::stringstream ss;
+  const char* sep = "";
+  for (size_t i = 0; i < LhsSize(); ++i) {
+    ss << sep;
+    for (size_t j = 0; j < RhsSize(); ++j) {
+      ss << HasEdge(i, j);
+    }
+    sep = ";";
+  }
+  return ss.str();
+}
+
+void UnorderedElementsAreMatcherImplBase::DescribeToImpl(
+    ::std::ostream* os) const {
+  switch (match_flags()) {
+    case UnorderedMatcherRequire::ExactMatch:
+      if (matcher_describers_.empty()) {
+        *os << "is empty";
+        return;
+      }
+      if (matcher_describers_.size() == 1) {
+        *os << "has " << Elements(1) << " and that element ";
+        matcher_describers_[0]->DescribeTo(os);
+        return;
+      }
+      *os << "has " << Elements(matcher_describers_.size())
+          << " and there exists some permutation of elements such that:\n";
+      break;
+    case UnorderedMatcherRequire::Superset:
+      *os << "a surjection from elements to requirements exists such that:\n";
+      break;
+    case UnorderedMatcherRequire::Subset:
+      *os << "an injection from elements to requirements exists such that:\n";
+      break;
+  }
+
+  const char* sep = "";
+  for (size_t i = 0; i != matcher_describers_.size(); ++i) {
+    *os << sep;
+    if (match_flags() == UnorderedMatcherRequire::ExactMatch) {
+      *os << " - element #" << i << " ";
+    } else {
+      *os << " - an element ";
+    }
+    matcher_describers_[i]->DescribeTo(os);
+    if (match_flags() == UnorderedMatcherRequire::ExactMatch) {
+      sep = ", and\n";
+    } else {
+      sep = "\n";
+    }
+  }
+}
+
+void UnorderedElementsAreMatcherImplBase::DescribeNegationToImpl(
+    ::std::ostream* os) const {
+  switch (match_flags()) {
+    case UnorderedMatcherRequire::ExactMatch:
+      if (matcher_describers_.empty()) {
+        *os << "isn't empty";
+        return;
+      }
+      if (matcher_describers_.size() == 1) {
+        *os << "doesn't have " << Elements(1) << ", or has " << Elements(1)
+            << " that ";
+        matcher_describers_[0]->DescribeNegationTo(os);
+        return;
+      }
+      *os << "doesn't have " << Elements(matcher_describers_.size())
+          << ", or there exists no permutation of elements such that:\n";
+      break;
+    case UnorderedMatcherRequire::Superset:
+      *os << "no surjection from elements to requirements exists such that:\n";
+      break;
+    case UnorderedMatcherRequire::Subset:
+      *os << "no injection from elements to requirements exists such that:\n";
+      break;
+  }
+  const char* sep = "";
+  for (size_t i = 0; i != matcher_describers_.size(); ++i) {
+    *os << sep;
+    if (match_flags() == UnorderedMatcherRequire::ExactMatch) {
+      *os << " - element #" << i << " ";
+    } else {
+      *os << " - an element ";
+    }
+    matcher_describers_[i]->DescribeTo(os);
+    if (match_flags() == UnorderedMatcherRequire::ExactMatch) {
+      sep = ", and\n";
+    } else {
+      sep = "\n";
+    }
+  }
+}
+
+// Checks that all matchers match at least one element, and that all
+// elements match at least one matcher. This enables faster matching
+// and better error reporting.
+// Returns false, writing an explanation to 'listener', if and only
+// if the success criteria are not met.
+bool UnorderedElementsAreMatcherImplBase::VerifyMatchMatrix(
+    const ::std::vector<std::string>& element_printouts,
+    const MatchMatrix& matrix, MatchResultListener* listener) const {
+  bool result = true;
+  ::std::vector<char> element_matched(matrix.LhsSize(), 0);
+  ::std::vector<char> matcher_matched(matrix.RhsSize(), 0);
+
+  for (size_t ilhs = 0; ilhs < matrix.LhsSize(); ilhs++) {
+    for (size_t irhs = 0; irhs < matrix.RhsSize(); irhs++) {
+      char matched = matrix.HasEdge(ilhs, irhs);
+      element_matched[ilhs] |= matched;
+      matcher_matched[irhs] |= matched;
+    }
+  }
+
+  if (match_flags() & UnorderedMatcherRequire::Superset) {
+    const char* sep =
+        "where the following matchers don't match any elements:\n";
+    for (size_t mi = 0; mi < matcher_matched.size(); ++mi) {
+      if (matcher_matched[mi]) continue;
+      result = false;
+      if (listener->IsInterested()) {
+        *listener << sep << "matcher #" << mi << ": ";
+        matcher_describers_[mi]->DescribeTo(listener->stream());
+        sep = ",\n";
+      }
+    }
+  }
+
+  if (match_flags() & UnorderedMatcherRequire::Subset) {
+    const char* sep =
+        "where the following elements don't match any matchers:\n";
+    const char* outer_sep = "";
+    if (!result) {
+      outer_sep = "\nand ";
+    }
+    for (size_t ei = 0; ei < element_matched.size(); ++ei) {
+      if (element_matched[ei]) continue;
+      result = false;
+      if (listener->IsInterested()) {
+        *listener << outer_sep << sep << "element #" << ei << ": "
+                  << element_printouts[ei];
+        sep = ",\n";
+        outer_sep = "";
+      }
+    }
+  }
+  return result;
+}
+
+bool UnorderedElementsAreMatcherImplBase::FindPairing(
+    const MatchMatrix& matrix, MatchResultListener* listener) const {
+  ElementMatcherPairs matches = FindMaxBipartiteMatching(matrix);
+
+  size_t max_flow = matches.size();
+  if ((match_flags() & UnorderedMatcherRequire::Superset) &&
+      max_flow < matrix.RhsSize()) {
+    if (listener->IsInterested()) {
+      *listener << "where no permutation of the elements can satisfy all "
+                   "matchers, and the closest match is "
+                << max_flow << " of " << matrix.RhsSize()
+                << " matchers with the pairings:\n";
+      LogElementMatcherPairVec(matches, listener->stream());
+    }
+    return false;
+  }
+  if ((match_flags() & UnorderedMatcherRequire::Subset) &&
+      max_flow < matrix.LhsSize()) {
+    if (listener->IsInterested()) {
+      *listener
+          << "where not all elements can be matched, and the closest match is "
+          << max_flow << " of " << matrix.RhsSize()
+          << " matchers with the pairings:\n";
+      LogElementMatcherPairVec(matches, listener->stream());
+    }
+    return false;
+  }
+
+  if (matches.size() > 1) {
+    if (listener->IsInterested()) {
+      const char* sep = "where:\n";
+      for (size_t mi = 0; mi < matches.size(); ++mi) {
+        *listener << sep << " - element #" << matches[mi].first
+                  << " is matched by matcher #" << matches[mi].second;
+        sep = ",\n";
+      }
+    }
+  }
+  return true;
+}
+
+}  // namespace internal
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googlemock/src/gmock-spec-builders.cc b/build/_deps/googletest-src/googlemock/src/gmock-spec-builders.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f9d3434560b40c706afc7d90712beb8e7a866d6f
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/src/gmock-spec-builders.cc
@@ -0,0 +1,888 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements the spec builder syntax (ON_CALL and
+// EXPECT_CALL).
+
+#include "gmock/gmock-spec-builders.h"
+
+#include <stdlib.h>
+#include <iostream>  // NOLINT
+#include <map>
+#include <memory>
+#include <set>
+#include <string>
+#include <vector>
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+#if GTEST_OS_CYGWIN || GTEST_OS_LINUX || GTEST_OS_MAC
+# include <unistd.h>  // NOLINT
+#endif
+
+// Silence C4800 (C4800: 'int *const ': forcing value
+// to bool 'true' or 'false') for MSVC 15
+#ifdef _MSC_VER
+#if _MSC_VER == 1900
+#  pragma warning(push)
+#  pragma warning(disable:4800)
+#endif
+#endif
+
+namespace testing {
+namespace internal {
+
+// Protects the mock object registry (in class Mock), all function
+// mockers, and all expectations.
+GTEST_API_ GTEST_DEFINE_STATIC_MUTEX_(g_gmock_mutex);
+
+// Logs a message including file and line number information.
+GTEST_API_ void LogWithLocation(testing::internal::LogSeverity severity,
+                                const char* file, int line,
+                                const std::string& message) {
+  ::std::ostringstream s;
+  s << file << ":" << line << ": " << message << ::std::endl;
+  Log(severity, s.str(), 0);
+}
+
+// Constructs an ExpectationBase object.
+ExpectationBase::ExpectationBase(const char* a_file, int a_line,
+                                 const std::string& a_source_text)
+    : file_(a_file),
+      line_(a_line),
+      source_text_(a_source_text),
+      cardinality_specified_(false),
+      cardinality_(Exactly(1)),
+      call_count_(0),
+      retired_(false),
+      extra_matcher_specified_(false),
+      repeated_action_specified_(false),
+      retires_on_saturation_(false),
+      last_clause_(kNone),
+      action_count_checked_(false) {}
+
+// Destructs an ExpectationBase object.
+ExpectationBase::~ExpectationBase() {}
+
+// Explicitly specifies the cardinality of this expectation.  Used by
+// the subclasses to implement the .Times() clause.
+void ExpectationBase::SpecifyCardinality(const Cardinality& a_cardinality) {
+  cardinality_specified_ = true;
+  cardinality_ = a_cardinality;
+}
+
+// Retires all pre-requisites of this expectation.
+void ExpectationBase::RetireAllPreRequisites()
+    GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+  if (is_retired()) {
+    // We can take this short-cut as we never retire an expectation
+    // until we have retired all its pre-requisites.
+    return;
+  }
+
+  ::std::vector<ExpectationBase*> expectations(1, this);
+  while (!expectations.empty()) {
+    ExpectationBase* exp = expectations.back();
+    expectations.pop_back();
+
+    for (ExpectationSet::const_iterator it =
+             exp->immediate_prerequisites_.begin();
+         it != exp->immediate_prerequisites_.end(); ++it) {
+      ExpectationBase* next = it->expectation_base().get();
+      if (!next->is_retired()) {
+        next->Retire();
+        expectations.push_back(next);
+      }
+    }
+  }
+}
+
+// Returns true if and only if all pre-requisites of this expectation
+// have been satisfied.
+bool ExpectationBase::AllPrerequisitesAreSatisfied() const
+    GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+  g_gmock_mutex.AssertHeld();
+  ::std::vector<const ExpectationBase*> expectations(1, this);
+  while (!expectations.empty()) {
+    const ExpectationBase* exp = expectations.back();
+    expectations.pop_back();
+
+    for (ExpectationSet::const_iterator it =
+             exp->immediate_prerequisites_.begin();
+         it != exp->immediate_prerequisites_.end(); ++it) {
+      const ExpectationBase* next = it->expectation_base().get();
+      if (!next->IsSatisfied()) return false;
+      expectations.push_back(next);
+    }
+  }
+  return true;
+}
+
+// Adds unsatisfied pre-requisites of this expectation to 'result'.
+void ExpectationBase::FindUnsatisfiedPrerequisites(ExpectationSet* result) const
+    GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+  g_gmock_mutex.AssertHeld();
+  ::std::vector<const ExpectationBase*> expectations(1, this);
+  while (!expectations.empty()) {
+    const ExpectationBase* exp = expectations.back();
+    expectations.pop_back();
+
+    for (ExpectationSet::const_iterator it =
+             exp->immediate_prerequisites_.begin();
+         it != exp->immediate_prerequisites_.end(); ++it) {
+      const ExpectationBase* next = it->expectation_base().get();
+
+      if (next->IsSatisfied()) {
+        // If *it is satisfied and has a call count of 0, some of its
+        // pre-requisites may not be satisfied yet.
+        if (next->call_count_ == 0) {
+          expectations.push_back(next);
+        }
+      } else {
+        // Now that we know next is unsatisfied, we are not so interested
+        // in whether its pre-requisites are satisfied.  Therefore we
+        // don't iterate into it here.
+        *result += *it;
+      }
+    }
+  }
+}
+
+// Describes how many times a function call matching this
+// expectation has occurred.
+void ExpectationBase::DescribeCallCountTo(::std::ostream* os) const
+    GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+  g_gmock_mutex.AssertHeld();
+
+  // Describes how many times the function is expected to be called.
+  *os << "         Expected: to be ";
+  cardinality().DescribeTo(os);
+  *os << "\n           Actual: ";
+  Cardinality::DescribeActualCallCountTo(call_count(), os);
+
+  // Describes the state of the expectation (e.g. is it satisfied?
+  // is it active?).
+  *os << " - " << (IsOverSaturated() ? "over-saturated" :
+                   IsSaturated() ? "saturated" :
+                   IsSatisfied() ? "satisfied" : "unsatisfied")
+      << " and "
+      << (is_retired() ? "retired" : "active");
+}
+
+// Checks the action count (i.e. the number of WillOnce() and
+// WillRepeatedly() clauses) against the cardinality if this hasn't
+// been done before.  Prints a warning if there are too many or too
+// few actions.
+void ExpectationBase::CheckActionCountIfNotDone() const
+    GTEST_LOCK_EXCLUDED_(mutex_) {
+  bool should_check = false;
+  {
+    MutexLock l(&mutex_);
+    if (!action_count_checked_) {
+      action_count_checked_ = true;
+      should_check = true;
+    }
+  }
+
+  if (should_check) {
+    if (!cardinality_specified_) {
+      // The cardinality was inferred - no need to check the action
+      // count against it.
+      return;
+    }
+
+    // The cardinality was explicitly specified.
+    const int action_count = static_cast<int>(untyped_actions_.size());
+    const int upper_bound = cardinality().ConservativeUpperBound();
+    const int lower_bound = cardinality().ConservativeLowerBound();
+    bool too_many;  // True if there are too many actions, or false
+    // if there are too few.
+    if (action_count > upper_bound ||
+        (action_count == upper_bound && repeated_action_specified_)) {
+      too_many = true;
+    } else if (0 < action_count && action_count < lower_bound &&
+               !repeated_action_specified_) {
+      too_many = false;
+    } else {
+      return;
+    }
+
+    ::std::stringstream ss;
+    DescribeLocationTo(&ss);
+    ss << "Too " << (too_many ? "many" : "few")
+       << " actions specified in " << source_text() << "...\n"
+       << "Expected to be ";
+    cardinality().DescribeTo(&ss);
+    ss << ", but has " << (too_many ? "" : "only ")
+       << action_count << " WillOnce()"
+       << (action_count == 1 ? "" : "s");
+    if (repeated_action_specified_) {
+      ss << " and a WillRepeatedly()";
+    }
+    ss << ".";
+    Log(kWarning, ss.str(), -1);  // -1 means "don't print stack trace".
+  }
+}
+
+// Implements the .Times() clause.
+void ExpectationBase::UntypedTimes(const Cardinality& a_cardinality) {
+  if (last_clause_ == kTimes) {
+    ExpectSpecProperty(false,
+                       ".Times() cannot appear "
+                       "more than once in an EXPECT_CALL().");
+  } else {
+    ExpectSpecProperty(last_clause_ < kTimes,
+                       ".Times() cannot appear after "
+                       ".InSequence(), .WillOnce(), .WillRepeatedly(), "
+                       "or .RetiresOnSaturation().");
+  }
+  last_clause_ = kTimes;
+
+  SpecifyCardinality(a_cardinality);
+}
+
+// Points to the implicit sequence introduced by a living InSequence
+// object (if any) in the current thread or NULL.
+GTEST_API_ ThreadLocal<Sequence*> g_gmock_implicit_sequence;
+
+// Reports an uninteresting call (whose description is in msg) in the
+// manner specified by 'reaction'.
+void ReportUninterestingCall(CallReaction reaction, const std::string& msg) {
+  // Include a stack trace only if --gmock_verbose=info is specified.
+  const int stack_frames_to_skip =
+      GMOCK_FLAG(verbose) == kInfoVerbosity ? 3 : -1;
+  switch (reaction) {
+    case kAllow:
+      Log(kInfo, msg, stack_frames_to_skip);
+      break;
+    case kWarn:
+      Log(kWarning,
+          msg +
+              "\nNOTE: You can safely ignore the above warning unless this "
+              "call should not happen.  Do not suppress it by blindly adding "
+              "an EXPECT_CALL() if you don't mean to enforce the call.  "
+              "See "
+              "https://github.com/google/googletest/blob/master/googlemock/"
+              "docs/cook_book.md#"
+              "knowing-when-to-expect for details.\n",
+          stack_frames_to_skip);
+      break;
+    default:  // FAIL
+      Expect(false, nullptr, -1, msg);
+  }
+}
+
+UntypedFunctionMockerBase::UntypedFunctionMockerBase()
+    : mock_obj_(nullptr), name_("") {}
+
+UntypedFunctionMockerBase::~UntypedFunctionMockerBase() {}
+
+// Sets the mock object this mock method belongs to, and registers
+// this information in the global mock registry.  Will be called
+// whenever an EXPECT_CALL() or ON_CALL() is executed on this mock
+// method.
+void UntypedFunctionMockerBase::RegisterOwner(const void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+  {
+    MutexLock l(&g_gmock_mutex);
+    mock_obj_ = mock_obj;
+  }
+  Mock::Register(mock_obj, this);
+}
+
+// Sets the mock object this mock method belongs to, and sets the name
+// of the mock function.  Will be called upon each invocation of this
+// mock function.
+void UntypedFunctionMockerBase::SetOwnerAndName(const void* mock_obj,
+                                                const char* name)
+    GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+  // We protect name_ under g_gmock_mutex in case this mock function
+  // is called from two threads concurrently.
+  MutexLock l(&g_gmock_mutex);
+  mock_obj_ = mock_obj;
+  name_ = name;
+}
+
+// Returns the name of the function being mocked.  Must be called
+// after RegisterOwner() or SetOwnerAndName() has been called.
+const void* UntypedFunctionMockerBase::MockObject() const
+    GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+  const void* mock_obj;
+  {
+    // We protect mock_obj_ under g_gmock_mutex in case this mock
+    // function is called from two threads concurrently.
+    MutexLock l(&g_gmock_mutex);
+    Assert(mock_obj_ != nullptr, __FILE__, __LINE__,
+           "MockObject() must not be called before RegisterOwner() or "
+           "SetOwnerAndName() has been called.");
+    mock_obj = mock_obj_;
+  }
+  return mock_obj;
+}
+
+// Returns the name of this mock method.  Must be called after
+// SetOwnerAndName() has been called.
+const char* UntypedFunctionMockerBase::Name() const
+    GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+  const char* name;
+  {
+    // We protect name_ under g_gmock_mutex in case this mock
+    // function is called from two threads concurrently.
+    MutexLock l(&g_gmock_mutex);
+    Assert(name_ != nullptr, __FILE__, __LINE__,
+           "Name() must not be called before SetOwnerAndName() has "
+           "been called.");
+    name = name_;
+  }
+  return name;
+}
+
+// Calculates the result of invoking this mock function with the given
+// arguments, prints it, and returns it.  The caller is responsible
+// for deleting the result.
+UntypedActionResultHolderBase* UntypedFunctionMockerBase::UntypedInvokeWith(
+    void* const untyped_args) GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
+  // See the definition of untyped_expectations_ for why access to it
+  // is unprotected here.
+  if (untyped_expectations_.size() == 0) {
+    // No expectation is set on this mock method - we have an
+    // uninteresting call.
+
+    // We must get Google Mock's reaction on uninteresting calls
+    // made on this mock object BEFORE performing the action,
+    // because the action may DELETE the mock object and make the
+    // following expression meaningless.
+    const CallReaction reaction =
+        Mock::GetReactionOnUninterestingCalls(MockObject());
+
+    // True if and only if we need to print this call's arguments and return
+    // value.  This definition must be kept in sync with
+    // the behavior of ReportUninterestingCall().
+    const bool need_to_report_uninteresting_call =
+        // If the user allows this uninteresting call, we print it
+        // only when they want informational messages.
+        reaction == kAllow ? LogIsVisible(kInfo) :
+                           // If the user wants this to be a warning, we print
+                           // it only when they want to see warnings.
+            reaction == kWarn
+                ? LogIsVisible(kWarning)
+                :
+                // Otherwise, the user wants this to be an error, and we
+                // should always print detailed information in the error.
+                true;
+
+    if (!need_to_report_uninteresting_call) {
+      // Perform the action without printing the call information.
+      return this->UntypedPerformDefaultAction(
+          untyped_args, "Function call: " + std::string(Name()));
+    }
+
+    // Warns about the uninteresting call.
+    ::std::stringstream ss;
+    this->UntypedDescribeUninterestingCall(untyped_args, &ss);
+
+    // Calculates the function result.
+    UntypedActionResultHolderBase* const result =
+        this->UntypedPerformDefaultAction(untyped_args, ss.str());
+
+    // Prints the function result.
+    if (result != nullptr) result->PrintAsActionResult(&ss);
+
+    ReportUninterestingCall(reaction, ss.str());
+    return result;
+  }
+
+  bool is_excessive = false;
+  ::std::stringstream ss;
+  ::std::stringstream why;
+  ::std::stringstream loc;
+  const void* untyped_action = nullptr;
+
+  // The UntypedFindMatchingExpectation() function acquires and
+  // releases g_gmock_mutex.
+  const ExpectationBase* const untyped_expectation =
+      this->UntypedFindMatchingExpectation(
+          untyped_args, &untyped_action, &is_excessive,
+          &ss, &why);
+  const bool found = untyped_expectation != nullptr;
+
+  // True if and only if we need to print the call's arguments
+  // and return value.
+  // This definition must be kept in sync with the uses of Expect()
+  // and Log() in this function.
+  const bool need_to_report_call =
+      !found || is_excessive || LogIsVisible(kInfo);
+  if (!need_to_report_call) {
+    // Perform the action without printing the call information.
+    return untyped_action == nullptr
+               ? this->UntypedPerformDefaultAction(untyped_args, "")
+               : this->UntypedPerformAction(untyped_action, untyped_args);
+  }
+
+  ss << "    Function call: " << Name();
+  this->UntypedPrintArgs(untyped_args, &ss);
+
+  // In case the action deletes a piece of the expectation, we
+  // generate the message beforehand.
+  if (found && !is_excessive) {
+    untyped_expectation->DescribeLocationTo(&loc);
+  }
+
+  UntypedActionResultHolderBase* const result =
+      untyped_action == nullptr
+          ? this->UntypedPerformDefaultAction(untyped_args, ss.str())
+          : this->UntypedPerformAction(untyped_action, untyped_args);
+  if (result != nullptr) result->PrintAsActionResult(&ss);
+  ss << "\n" << why.str();
+
+  if (!found) {
+    // No expectation matches this call - reports a failure.
+    Expect(false, nullptr, -1, ss.str());
+  } else if (is_excessive) {
+    // We had an upper-bound violation and the failure message is in ss.
+    Expect(false, untyped_expectation->file(),
+           untyped_expectation->line(), ss.str());
+  } else {
+    // We had an expected call and the matching expectation is
+    // described in ss.
+    Log(kInfo, loc.str() + ss.str(), 2);
+  }
+
+  return result;
+}
+
+// Returns an Expectation object that references and co-owns exp,
+// which must be an expectation on this mock function.
+Expectation UntypedFunctionMockerBase::GetHandleOf(ExpectationBase* exp) {
+  // See the definition of untyped_expectations_ for why access to it
+  // is unprotected here.
+  for (UntypedExpectations::const_iterator it =
+           untyped_expectations_.begin();
+       it != untyped_expectations_.end(); ++it) {
+    if (it->get() == exp) {
+      return Expectation(*it);
+    }
+  }
+
+  Assert(false, __FILE__, __LINE__, "Cannot find expectation.");
+  return Expectation();
+  // The above statement is just to make the code compile, and will
+  // never be executed.
+}
+
+// Verifies that all expectations on this mock function have been
+// satisfied.  Reports one or more Google Test non-fatal failures
+// and returns false if not.
+bool UntypedFunctionMockerBase::VerifyAndClearExpectationsLocked()
+    GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
+  g_gmock_mutex.AssertHeld();
+  bool expectations_met = true;
+  for (UntypedExpectations::const_iterator it =
+           untyped_expectations_.begin();
+       it != untyped_expectations_.end(); ++it) {
+    ExpectationBase* const untyped_expectation = it->get();
+    if (untyped_expectation->IsOverSaturated()) {
+      // There was an upper-bound violation.  Since the error was
+      // already reported when it occurred, there is no need to do
+      // anything here.
+      expectations_met = false;
+    } else if (!untyped_expectation->IsSatisfied()) {
+      expectations_met = false;
+      ::std::stringstream ss;
+      ss  << "Actual function call count doesn't match "
+          << untyped_expectation->source_text() << "...\n";
+      // No need to show the source file location of the expectation
+      // in the description, as the Expect() call that follows already
+      // takes care of it.
+      untyped_expectation->MaybeDescribeExtraMatcherTo(&ss);
+      untyped_expectation->DescribeCallCountTo(&ss);
+      Expect(false, untyped_expectation->file(),
+             untyped_expectation->line(), ss.str());
+    }
+  }
+
+  // Deleting our expectations may trigger other mock objects to be deleted, for
+  // example if an action contains a reference counted smart pointer to that
+  // mock object, and that is the last reference. So if we delete our
+  // expectations within the context of the global mutex we may deadlock when
+  // this method is called again. Instead, make a copy of the set of
+  // expectations to delete, clear our set within the mutex, and then clear the
+  // copied set outside of it.
+  UntypedExpectations expectations_to_delete;
+  untyped_expectations_.swap(expectations_to_delete);
+
+  g_gmock_mutex.Unlock();
+  expectations_to_delete.clear();
+  g_gmock_mutex.Lock();
+
+  return expectations_met;
+}
+
+CallReaction intToCallReaction(int mock_behavior) {
+  if (mock_behavior >= kAllow && mock_behavior <= kFail) {
+    return static_cast<internal::CallReaction>(mock_behavior);
+  }
+  return kWarn;
+}
+
+}  // namespace internal
+
+// Class Mock.
+
+namespace {
+
+typedef std::set<internal::UntypedFunctionMockerBase*> FunctionMockers;
+
+// The current state of a mock object.  Such information is needed for
+// detecting leaked mock objects and explicitly verifying a mock's
+// expectations.
+struct MockObjectState {
+  MockObjectState()
+      : first_used_file(nullptr), first_used_line(-1), leakable(false) {}
+
+  // Where in the source file an ON_CALL or EXPECT_CALL is first
+  // invoked on this mock object.
+  const char* first_used_file;
+  int first_used_line;
+  ::std::string first_used_test_suite;
+  ::std::string first_used_test;
+  bool leakable;  // true if and only if it's OK to leak the object.
+  FunctionMockers function_mockers;  // All registered methods of the object.
+};
+
+// A global registry holding the state of all mock objects that are
+// alive.  A mock object is added to this registry the first time
+// Mock::AllowLeak(), ON_CALL(), or EXPECT_CALL() is called on it.  It
+// is removed from the registry in the mock object's destructor.
+class MockObjectRegistry {
+ public:
+  // Maps a mock object (identified by its address) to its state.
+  typedef std::map<const void*, MockObjectState> StateMap;
+
+  // This destructor will be called when a program exits, after all
+  // tests in it have been run.  By then, there should be no mock
+  // object alive.  Therefore we report any living object as test
+  // failure, unless the user explicitly asked us to ignore it.
+  ~MockObjectRegistry() {
+    if (!GMOCK_FLAG(catch_leaked_mocks))
+      return;
+
+    int leaked_count = 0;
+    for (StateMap::const_iterator it = states_.begin(); it != states_.end();
+         ++it) {
+      if (it->second.leakable)  // The user said it's fine to leak this object.
+        continue;
+
+      // FIXME: Print the type of the leaked object.
+      // This can help the user identify the leaked object.
+      std::cout << "\n";
+      const MockObjectState& state = it->second;
+      std::cout << internal::FormatFileLocation(state.first_used_file,
+                                                state.first_used_line);
+      std::cout << " ERROR: this mock object";
+      if (state.first_used_test != "") {
+        std::cout << " (used in test " << state.first_used_test_suite << "."
+                  << state.first_used_test << ")";
+      }
+      std::cout << " should be deleted but never is. Its address is @"
+           << it->first << ".";
+      leaked_count++;
+    }
+    if (leaked_count > 0) {
+      std::cout << "\nERROR: " << leaked_count << " leaked mock "
+                << (leaked_count == 1 ? "object" : "objects")
+                << " found at program exit. Expectations on a mock object is "
+                   "verified when the object is destructed. Leaking a mock "
+                   "means that its expectations aren't verified, which is "
+                   "usually a test bug. If you really intend to leak a mock, "
+                   "you can suppress this error using "
+                   "testing::Mock::AllowLeak(mock_object), or you may use a "
+                   "fake or stub instead of a mock.\n";
+      std::cout.flush();
+      ::std::cerr.flush();
+      // RUN_ALL_TESTS() has already returned when this destructor is
+      // called.  Therefore we cannot use the normal Google Test
+      // failure reporting mechanism.
+      _exit(1);  // We cannot call exit() as it is not reentrant and
+                 // may already have been called.
+    }
+  }
+
+  StateMap& states() { return states_; }
+
+ private:
+  StateMap states_;
+};
+
+// Protected by g_gmock_mutex.
+MockObjectRegistry g_mock_object_registry;
+
+// Maps a mock object to the reaction Google Mock should have when an
+// uninteresting method is called.  Protected by g_gmock_mutex.
+std::map<const void*, internal::CallReaction> g_uninteresting_call_reaction;
+
+// Sets the reaction Google Mock should have when an uninteresting
+// method of the given mock object is called.
+void SetReactionOnUninterestingCalls(const void* mock_obj,
+                                     internal::CallReaction reaction)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  internal::MutexLock l(&internal::g_gmock_mutex);
+  g_uninteresting_call_reaction[mock_obj] = reaction;
+}
+
+}  // namespace
+
+// Tells Google Mock to allow uninteresting calls on the given mock
+// object.
+void Mock::AllowUninterestingCalls(const void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  SetReactionOnUninterestingCalls(mock_obj, internal::kAllow);
+}
+
+// Tells Google Mock to warn the user about uninteresting calls on the
+// given mock object.
+void Mock::WarnUninterestingCalls(const void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  SetReactionOnUninterestingCalls(mock_obj, internal::kWarn);
+}
+
+// Tells Google Mock to fail uninteresting calls on the given mock
+// object.
+void Mock::FailUninterestingCalls(const void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  SetReactionOnUninterestingCalls(mock_obj, internal::kFail);
+}
+
+// Tells Google Mock the given mock object is being destroyed and its
+// entry in the call-reaction table should be removed.
+void Mock::UnregisterCallReaction(const void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  internal::MutexLock l(&internal::g_gmock_mutex);
+  g_uninteresting_call_reaction.erase(mock_obj);
+}
+
+// Returns the reaction Google Mock will have on uninteresting calls
+// made on the given mock object.
+internal::CallReaction Mock::GetReactionOnUninterestingCalls(
+    const void* mock_obj)
+        GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  internal::MutexLock l(&internal::g_gmock_mutex);
+  return (g_uninteresting_call_reaction.count(mock_obj) == 0) ?
+      internal::intToCallReaction(GMOCK_FLAG(default_mock_behavior)) :
+      g_uninteresting_call_reaction[mock_obj];
+}
+
+// Tells Google Mock to ignore mock_obj when checking for leaked mock
+// objects.
+void Mock::AllowLeak(const void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  internal::MutexLock l(&internal::g_gmock_mutex);
+  g_mock_object_registry.states()[mock_obj].leakable = true;
+}
+
+// Verifies and clears all expectations on the given mock object.  If
+// the expectations aren't satisfied, generates one or more Google
+// Test non-fatal failures and returns false.
+bool Mock::VerifyAndClearExpectations(void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  internal::MutexLock l(&internal::g_gmock_mutex);
+  return VerifyAndClearExpectationsLocked(mock_obj);
+}
+
+// Verifies all expectations on the given mock object and clears its
+// default actions and expectations.  Returns true if and only if the
+// verification was successful.
+bool Mock::VerifyAndClear(void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  internal::MutexLock l(&internal::g_gmock_mutex);
+  ClearDefaultActionsLocked(mock_obj);
+  return VerifyAndClearExpectationsLocked(mock_obj);
+}
+
+// Verifies and clears all expectations on the given mock object.  If
+// the expectations aren't satisfied, generates one or more Google
+// Test non-fatal failures and returns false.
+bool Mock::VerifyAndClearExpectationsLocked(void* mock_obj)
+    GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex) {
+  internal::g_gmock_mutex.AssertHeld();
+  if (g_mock_object_registry.states().count(mock_obj) == 0) {
+    // No EXPECT_CALL() was set on the given mock object.
+    return true;
+  }
+
+  // Verifies and clears the expectations on each mock method in the
+  // given mock object.
+  bool expectations_met = true;
+  FunctionMockers& mockers =
+      g_mock_object_registry.states()[mock_obj].function_mockers;
+  for (FunctionMockers::const_iterator it = mockers.begin();
+       it != mockers.end(); ++it) {
+    if (!(*it)->VerifyAndClearExpectationsLocked()) {
+      expectations_met = false;
+    }
+  }
+
+  // We don't clear the content of mockers, as they may still be
+  // needed by ClearDefaultActionsLocked().
+  return expectations_met;
+}
+
+bool Mock::IsNaggy(void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  return Mock::GetReactionOnUninterestingCalls(mock_obj) == internal::kWarn;
+}
+bool Mock::IsNice(void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  return Mock::GetReactionOnUninterestingCalls(mock_obj) == internal::kAllow;
+}
+bool Mock::IsStrict(void* mock_obj)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  return Mock::GetReactionOnUninterestingCalls(mock_obj) == internal::kFail;
+}
+
+// Registers a mock object and a mock method it owns.
+void Mock::Register(const void* mock_obj,
+                    internal::UntypedFunctionMockerBase* mocker)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  internal::MutexLock l(&internal::g_gmock_mutex);
+  g_mock_object_registry.states()[mock_obj].function_mockers.insert(mocker);
+}
+
+// Tells Google Mock where in the source code mock_obj is used in an
+// ON_CALL or EXPECT_CALL.  In case mock_obj is leaked, this
+// information helps the user identify which object it is.
+void Mock::RegisterUseByOnCallOrExpectCall(const void* mock_obj,
+                                           const char* file, int line)
+    GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
+  internal::MutexLock l(&internal::g_gmock_mutex);
+  MockObjectState& state = g_mock_object_registry.states()[mock_obj];
+  if (state.first_used_file == nullptr) {
+    state.first_used_file = file;
+    state.first_used_line = line;
+    const TestInfo* const test_info =
+        UnitTest::GetInstance()->current_test_info();
+    if (test_info != nullptr) {
+      state.first_used_test_suite = test_info->test_suite_name();
+      state.first_used_test = test_info->name();
+    }
+  }
+}
+
+// Unregisters a mock method; removes the owning mock object from the
+// registry when the last mock method associated with it has been
+// unregistered.  This is called only in the destructor of
+// FunctionMockerBase.
+void Mock::UnregisterLocked(internal::UntypedFunctionMockerBase* mocker)
+    GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex) {
+  internal::g_gmock_mutex.AssertHeld();
+  for (MockObjectRegistry::StateMap::iterator it =
+           g_mock_object_registry.states().begin();
+       it != g_mock_object_registry.states().end(); ++it) {
+    FunctionMockers& mockers = it->second.function_mockers;
+    if (mockers.erase(mocker) > 0) {
+      // mocker was in mockers and has been just removed.
+      if (mockers.empty()) {
+        g_mock_object_registry.states().erase(it);
+      }
+      return;
+    }
+  }
+}
+
+// Clears all ON_CALL()s set on the given mock object.
+void Mock::ClearDefaultActionsLocked(void* mock_obj)
+    GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex) {
+  internal::g_gmock_mutex.AssertHeld();
+
+  if (g_mock_object_registry.states().count(mock_obj) == 0) {
+    // No ON_CALL() was set on the given mock object.
+    return;
+  }
+
+  // Clears the default actions for each mock method in the given mock
+  // object.
+  FunctionMockers& mockers =
+      g_mock_object_registry.states()[mock_obj].function_mockers;
+  for (FunctionMockers::const_iterator it = mockers.begin();
+       it != mockers.end(); ++it) {
+    (*it)->ClearDefaultActionsLocked();
+  }
+
+  // We don't clear the content of mockers, as they may still be
+  // needed by VerifyAndClearExpectationsLocked().
+}
+
+Expectation::Expectation() {}
+
+Expectation::Expectation(
+    const std::shared_ptr<internal::ExpectationBase>& an_expectation_base)
+    : expectation_base_(an_expectation_base) {}
+
+Expectation::~Expectation() {}
+
+// Adds an expectation to a sequence.
+void Sequence::AddExpectation(const Expectation& expectation) const {
+  if (*last_expectation_ != expectation) {
+    if (last_expectation_->expectation_base() != nullptr) {
+      expectation.expectation_base()->immediate_prerequisites_
+          += *last_expectation_;
+    }
+    *last_expectation_ = expectation;
+  }
+}
+
+// Creates the implicit sequence if there isn't one.
+InSequence::InSequence() {
+  if (internal::g_gmock_implicit_sequence.get() == nullptr) {
+    internal::g_gmock_implicit_sequence.set(new Sequence);
+    sequence_created_ = true;
+  } else {
+    sequence_created_ = false;
+  }
+}
+
+// Deletes the implicit sequence if it was created by the constructor
+// of this object.
+InSequence::~InSequence() {
+  if (sequence_created_) {
+    delete internal::g_gmock_implicit_sequence.get();
+    internal::g_gmock_implicit_sequence.set(nullptr);
+  }
+}
+
+}  // namespace testing
+
+#ifdef _MSC_VER
+#if _MSC_VER == 1900
+#  pragma warning(pop)
+#endif
+#endif
diff --git a/build/_deps/googletest-src/googlemock/src/gmock.cc b/build/_deps/googletest-src/googlemock/src/gmock.cc
new file mode 100644
index 0000000000000000000000000000000000000000..32b2a7394fd08cb19c13d0017539bce308195db0
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/src/gmock.cc
@@ -0,0 +1,213 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include "gmock/gmock.h"
+#include "gmock/internal/gmock-port.h"
+
+namespace testing {
+
+GMOCK_DEFINE_bool_(catch_leaked_mocks, true,
+                   "true if and only if Google Mock should report leaked "
+                   "mock objects as failures.");
+
+GMOCK_DEFINE_string_(verbose, internal::kWarningVerbosity,
+                     "Controls how verbose Google Mock's output is."
+                     "  Valid values:\n"
+                     "  info    - prints all messages.\n"
+                     "  warning - prints warnings and errors.\n"
+                     "  error   - prints errors only.");
+
+GMOCK_DEFINE_int32_(default_mock_behavior, 1,
+                    "Controls the default behavior of mocks."
+                    "  Valid values:\n"
+                    "  0 - by default, mocks act as NiceMocks.\n"
+                    "  1 - by default, mocks act as NaggyMocks.\n"
+                    "  2 - by default, mocks act as StrictMocks.");
+
+namespace internal {
+
+// Parses a string as a command line flag.  The string should have the
+// format "--gmock_flag=value".  When def_optional is true, the
+// "=value" part can be omitted.
+//
+// Returns the value of the flag, or NULL if the parsing failed.
+static const char* ParseGoogleMockFlagValue(const char* str,
+                                            const char* flag,
+                                            bool def_optional) {
+  // str and flag must not be NULL.
+  if (str == nullptr || flag == nullptr) return nullptr;
+
+  // The flag must start with "--gmock_".
+  const std::string flag_str = std::string("--gmock_") + flag;
+  const size_t flag_len = flag_str.length();
+  if (strncmp(str, flag_str.c_str(), flag_len) != 0) return nullptr;
+
+  // Skips the flag name.
+  const char* flag_end = str + flag_len;
+
+  // When def_optional is true, it's OK to not have a "=value" part.
+  if (def_optional && (flag_end[0] == '\0')) {
+    return flag_end;
+  }
+
+  // If def_optional is true and there are more characters after the
+  // flag name, or if def_optional is false, there must be a '=' after
+  // the flag name.
+  if (flag_end[0] != '=') return nullptr;
+
+  // Returns the string after "=".
+  return flag_end + 1;
+}
+
+// Parses a string for a Google Mock bool flag, in the form of
+// "--gmock_flag=value".
+//
+// On success, stores the value of the flag in *value, and returns
+// true.  On failure, returns false without changing *value.
+static bool ParseGoogleMockBoolFlag(const char* str, const char* flag,
+                                    bool* value) {
+  // Gets the value of the flag as a string.
+  const char* const value_str = ParseGoogleMockFlagValue(str, flag, true);
+
+  // Aborts if the parsing failed.
+  if (value_str == nullptr) return false;
+
+  // Converts the string value to a bool.
+  *value = !(*value_str == '0' || *value_str == 'f' || *value_str == 'F');
+  return true;
+}
+
+// Parses a string for a Google Mock string flag, in the form of
+// "--gmock_flag=value".
+//
+// On success, stores the value of the flag in *value, and returns
+// true.  On failure, returns false without changing *value.
+template <typename String>
+static bool ParseGoogleMockStringFlag(const char* str, const char* flag,
+                                      String* value) {
+  // Gets the value of the flag as a string.
+  const char* const value_str = ParseGoogleMockFlagValue(str, flag, false);
+
+  // Aborts if the parsing failed.
+  if (value_str == nullptr) return false;
+
+  // Sets *value to the value of the flag.
+  *value = value_str;
+  return true;
+}
+
+static bool ParseGoogleMockIntFlag(const char* str, const char* flag,
+                                   int* value) {
+  // Gets the value of the flag as a string.
+  const char* const value_str = ParseGoogleMockFlagValue(str, flag, true);
+
+  // Aborts if the parsing failed.
+  if (value_str == nullptr) return false;
+
+  // Sets *value to the value of the flag.
+  return ParseInt32(Message() << "The value of flag --" << flag,
+                    value_str, value);
+}
+
+// The internal implementation of InitGoogleMock().
+//
+// The type parameter CharType can be instantiated to either char or
+// wchar_t.
+template <typename CharType>
+void InitGoogleMockImpl(int* argc, CharType** argv) {
+  // Makes sure Google Test is initialized.  InitGoogleTest() is
+  // idempotent, so it's fine if the user has already called it.
+  InitGoogleTest(argc, argv);
+  if (*argc <= 0) return;
+
+  for (int i = 1; i != *argc; i++) {
+    const std::string arg_string = StreamableToString(argv[i]);
+    const char* const arg = arg_string.c_str();
+
+    // Do we see a Google Mock flag?
+    if (ParseGoogleMockBoolFlag(arg, "catch_leaked_mocks",
+                                &GMOCK_FLAG(catch_leaked_mocks)) ||
+        ParseGoogleMockStringFlag(arg, "verbose", &GMOCK_FLAG(verbose)) ||
+        ParseGoogleMockIntFlag(arg, "default_mock_behavior",
+                               &GMOCK_FLAG(default_mock_behavior))) {
+      // Yes.  Shift the remainder of the argv list left by one.  Note
+      // that argv has (*argc + 1) elements, the last one always being
+      // NULL.  The following loop moves the trailing NULL element as
+      // well.
+      for (int j = i; j != *argc; j++) {
+        argv[j] = argv[j + 1];
+      }
+
+      // Decrements the argument count.
+      (*argc)--;
+
+      // We also need to decrement the iterator as we just removed
+      // an element.
+      i--;
+    }
+  }
+}
+
+}  // namespace internal
+
+// Initializes Google Mock.  This must be called before running the
+// tests.  In particular, it parses a command line for the flags that
+// Google Mock recognizes.  Whenever a Google Mock flag is seen, it is
+// removed from argv, and *argc is decremented.
+//
+// No value is returned.  Instead, the Google Mock flag variables are
+// updated.
+//
+// Since Google Test is needed for Google Mock to work, this function
+// also initializes Google Test and parses its flags, if that hasn't
+// been done.
+GTEST_API_ void InitGoogleMock(int* argc, char** argv) {
+  internal::InitGoogleMockImpl(argc, argv);
+}
+
+// This overloaded version can be used in Windows programs compiled in
+// UNICODE mode.
+GTEST_API_ void InitGoogleMock(int* argc, wchar_t** argv) {
+  internal::InitGoogleMockImpl(argc, argv);
+}
+
+// This overloaded version can be used on Arduino/embedded platforms where
+// there is no argc/argv.
+GTEST_API_ void InitGoogleMock() {
+  // Since Arduino doesn't have a command line, fake out the argc/argv arguments
+  int argc = 1;
+  const auto arg0 = "dummy";
+  char* argv0 = const_cast<char*>(arg0);
+  char** argv = &argv0;
+
+  internal::InitGoogleMockImpl(&argc, argv);
+}
+
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googlemock/src/gmock_main.cc b/build/_deps/googletest-src/googlemock/src/gmock_main.cc
new file mode 100644
index 0000000000000000000000000000000000000000..98611b935350d88c8921f2cc9bd785193e78ac6b
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/src/gmock_main.cc
@@ -0,0 +1,65 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include <iostream>
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+#ifdef ARDUINO
+void setup() {
+  // Since Google Mock depends on Google Test, InitGoogleMock() is
+  // also responsible for initializing Google Test.  Therefore there's
+  // no need for calling testing::InitGoogleTest() separately.
+  testing::InitGoogleMock();
+}
+void loop() { RUN_ALL_TESTS(); }
+#else
+
+// MS C++ compiler/linker has a bug on Windows (not on Windows CE), which
+// causes a link error when _tmain is defined in a static library and UNICODE
+// is enabled. For this reason instead of _tmain, main function is used on
+// Windows. See the following link to track the current status of this bug:
+// https://web.archive.org/web/20170912203238/connect.microsoft.com/VisualStudio/feedback/details/394464/wmain-link-error-in-the-static-library
+// // NOLINT
+#if GTEST_OS_WINDOWS_MOBILE
+# include <tchar.h>  // NOLINT
+
+GTEST_API_ int _tmain(int argc, TCHAR** argv) {
+#else
+GTEST_API_ int main(int argc, char** argv) {
+#endif  // GTEST_OS_WINDOWS_MOBILE
+  std::cout << "Running main() from gmock_main.cc\n";
+  // Since Google Mock depends on Google Test, InitGoogleMock() is
+  // also responsible for initializing Google Test.  Therefore there's
+  // no need for calling testing::InitGoogleTest() separately.
+  testing::InitGoogleMock(&argc, argv);
+  return RUN_ALL_TESTS();
+}
+#endif
diff --git a/build/_deps/googletest-src/googlemock/test/BUILD.bazel b/build/_deps/googletest-src/googlemock/test/BUILD.bazel
new file mode 100644
index 0000000000000000000000000000000000000000..da95ed58bfd708027c781dc255b46e532c8d6e55
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/BUILD.bazel
@@ -0,0 +1,110 @@
+# Copyright 2017 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Author: misterg@google.com (Gennadiy Civil)
+#
+#   Bazel Build for Google C++ Testing Framework(Google Test)-googlemock
+
+load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_test")
+load("@rules_python//python:defs.bzl", "py_library", "py_test")
+
+licenses(["notice"])
+
+# Tests for GMock itself
+cc_test(
+    name = "gmock_all_test",
+    size = "small",
+    srcs = glob(include = ["gmock-*.cc"]),
+    linkopts = select({
+        "//:windows": [],
+        "//conditions:default": ["-pthread"],
+    }),
+    deps = ["//:gtest"],
+)
+
+# Python tests
+py_library(
+    name = "gmock_test_utils",
+    testonly = 1,
+    srcs = ["gmock_test_utils.py"],
+)
+
+cc_binary(
+    name = "gmock_leak_test_",
+    testonly = 1,
+    srcs = ["gmock_leak_test_.cc"],
+    deps = ["//:gtest_main"],
+)
+
+py_test(
+    name = "gmock_leak_test",
+    size = "medium",
+    srcs = ["gmock_leak_test.py"],
+    data = [
+        ":gmock_leak_test_",
+        ":gmock_test_utils",
+    ],
+)
+
+cc_test(
+    name = "gmock_link_test",
+    size = "small",
+    srcs = [
+        "gmock_link2_test.cc",
+        "gmock_link_test.cc",
+        "gmock_link_test.h",
+    ],
+    deps = ["//:gtest_main"],
+)
+
+cc_binary(
+    name = "gmock_output_test_",
+    srcs = ["gmock_output_test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "gmock_output_test",
+    size = "medium",
+    srcs = ["gmock_output_test.py"],
+    data = [
+        ":gmock_output_test_",
+        ":gmock_output_test_golden.txt",
+    ],
+    python_version = "PY2",
+    deps = [":gmock_test_utils"],
+)
+
+cc_test(
+    name = "gmock_test",
+    size = "small",
+    srcs = ["gmock_test.cc"],
+    deps = ["//:gtest_main"],
+)
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-actions_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-actions_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f63c8c5af9263f14c9da41fc8ed0cf5c63dce63d
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-actions_test.cc
@@ -0,0 +1,1445 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests the built-in actions.
+
+// Silence C4800 (C4800: 'int *const ': forcing value
+// to bool 'true' or 'false') for MSVC 15
+#ifdef _MSC_VER
+#if _MSC_VER == 1900
+#  pragma warning(push)
+#  pragma warning(disable:4800)
+#endif
+#endif
+
+#include "gmock/gmock-actions.h"
+#include <algorithm>
+#include <iterator>
+#include <memory>
+#include <string>
+#include "gmock/gmock.h"
+#include "gmock/internal/gmock-port.h"
+#include "gtest/gtest.h"
+#include "gtest/gtest-spi.h"
+
+namespace {
+
+// This list should be kept sorted.
+using testing::_;
+using testing::Action;
+using testing::ActionInterface;
+using testing::Assign;
+using testing::ByMove;
+using testing::ByRef;
+using testing::DefaultValue;
+using testing::DoAll;
+using testing::DoDefault;
+using testing::IgnoreResult;
+using testing::Invoke;
+using testing::InvokeWithoutArgs;
+using testing::MakePolymorphicAction;
+using testing::Ne;
+using testing::PolymorphicAction;
+using testing::Return;
+using testing::ReturnNull;
+using testing::ReturnRef;
+using testing::ReturnRefOfCopy;
+using testing::SetArgPointee;
+using testing::SetArgumentPointee;
+using testing::Unused;
+using testing::WithArgs;
+using testing::internal::BuiltInDefaultValue;
+using testing::internal::Int64;
+using testing::internal::UInt64;
+
+#if !GTEST_OS_WINDOWS_MOBILE
+using testing::SetErrnoAndReturn;
+#endif
+
+// Tests that BuiltInDefaultValue<T*>::Get() returns NULL.
+TEST(BuiltInDefaultValueTest, IsNullForPointerTypes) {
+  EXPECT_TRUE(BuiltInDefaultValue<int*>::Get() == nullptr);
+  EXPECT_TRUE(BuiltInDefaultValue<const char*>::Get() == nullptr);
+  EXPECT_TRUE(BuiltInDefaultValue<void*>::Get() == nullptr);
+}
+
+// Tests that BuiltInDefaultValue<T*>::Exists() return true.
+TEST(BuiltInDefaultValueTest, ExistsForPointerTypes) {
+  EXPECT_TRUE(BuiltInDefaultValue<int*>::Exists());
+  EXPECT_TRUE(BuiltInDefaultValue<const char*>::Exists());
+  EXPECT_TRUE(BuiltInDefaultValue<void*>::Exists());
+}
+
+// Tests that BuiltInDefaultValue<T>::Get() returns 0 when T is a
+// built-in numeric type.
+TEST(BuiltInDefaultValueTest, IsZeroForNumericTypes) {
+  EXPECT_EQ(0U, BuiltInDefaultValue<unsigned char>::Get());
+  EXPECT_EQ(0, BuiltInDefaultValue<signed char>::Get());
+  EXPECT_EQ(0, BuiltInDefaultValue<char>::Get());
+#if GMOCK_WCHAR_T_IS_NATIVE_
+#if !defined(__WCHAR_UNSIGNED__)
+  EXPECT_EQ(0, BuiltInDefaultValue<wchar_t>::Get());
+#else
+  EXPECT_EQ(0U, BuiltInDefaultValue<wchar_t>::Get());
+#endif
+#endif
+  EXPECT_EQ(0U, BuiltInDefaultValue<unsigned short>::Get());  // NOLINT
+  EXPECT_EQ(0, BuiltInDefaultValue<signed short>::Get());  // NOLINT
+  EXPECT_EQ(0, BuiltInDefaultValue<short>::Get());  // NOLINT
+  EXPECT_EQ(0U, BuiltInDefaultValue<unsigned int>::Get());
+  EXPECT_EQ(0, BuiltInDefaultValue<signed int>::Get());
+  EXPECT_EQ(0, BuiltInDefaultValue<int>::Get());
+  EXPECT_EQ(0U, BuiltInDefaultValue<unsigned long>::Get());  // NOLINT
+  EXPECT_EQ(0, BuiltInDefaultValue<signed long>::Get());  // NOLINT
+  EXPECT_EQ(0, BuiltInDefaultValue<long>::Get());  // NOLINT
+  EXPECT_EQ(0U, BuiltInDefaultValue<UInt64>::Get());
+  EXPECT_EQ(0, BuiltInDefaultValue<Int64>::Get());
+  EXPECT_EQ(0, BuiltInDefaultValue<float>::Get());
+  EXPECT_EQ(0, BuiltInDefaultValue<double>::Get());
+}
+
+// Tests that BuiltInDefaultValue<T>::Exists() returns true when T is a
+// built-in numeric type.
+TEST(BuiltInDefaultValueTest, ExistsForNumericTypes) {
+  EXPECT_TRUE(BuiltInDefaultValue<unsigned char>::Exists());
+  EXPECT_TRUE(BuiltInDefaultValue<signed char>::Exists());
+  EXPECT_TRUE(BuiltInDefaultValue<char>::Exists());
+#if GMOCK_WCHAR_T_IS_NATIVE_
+  EXPECT_TRUE(BuiltInDefaultValue<wchar_t>::Exists());
+#endif
+  EXPECT_TRUE(BuiltInDefaultValue<unsigned short>::Exists());  // NOLINT
+  EXPECT_TRUE(BuiltInDefaultValue<signed short>::Exists());  // NOLINT
+  EXPECT_TRUE(BuiltInDefaultValue<short>::Exists());  // NOLINT
+  EXPECT_TRUE(BuiltInDefaultValue<unsigned int>::Exists());
+  EXPECT_TRUE(BuiltInDefaultValue<signed int>::Exists());
+  EXPECT_TRUE(BuiltInDefaultValue<int>::Exists());
+  EXPECT_TRUE(BuiltInDefaultValue<unsigned long>::Exists());  // NOLINT
+  EXPECT_TRUE(BuiltInDefaultValue<signed long>::Exists());  // NOLINT
+  EXPECT_TRUE(BuiltInDefaultValue<long>::Exists());  // NOLINT
+  EXPECT_TRUE(BuiltInDefaultValue<UInt64>::Exists());
+  EXPECT_TRUE(BuiltInDefaultValue<Int64>::Exists());
+  EXPECT_TRUE(BuiltInDefaultValue<float>::Exists());
+  EXPECT_TRUE(BuiltInDefaultValue<double>::Exists());
+}
+
+// Tests that BuiltInDefaultValue<bool>::Get() returns false.
+TEST(BuiltInDefaultValueTest, IsFalseForBool) {
+  EXPECT_FALSE(BuiltInDefaultValue<bool>::Get());
+}
+
+// Tests that BuiltInDefaultValue<bool>::Exists() returns true.
+TEST(BuiltInDefaultValueTest, BoolExists) {
+  EXPECT_TRUE(BuiltInDefaultValue<bool>::Exists());
+}
+
+// Tests that BuiltInDefaultValue<T>::Get() returns "" when T is a
+// string type.
+TEST(BuiltInDefaultValueTest, IsEmptyStringForString) {
+  EXPECT_EQ("", BuiltInDefaultValue< ::std::string>::Get());
+}
+
+// Tests that BuiltInDefaultValue<T>::Exists() returns true when T is a
+// string type.
+TEST(BuiltInDefaultValueTest, ExistsForString) {
+  EXPECT_TRUE(BuiltInDefaultValue< ::std::string>::Exists());
+}
+
+// Tests that BuiltInDefaultValue<const T>::Get() returns the same
+// value as BuiltInDefaultValue<T>::Get() does.
+TEST(BuiltInDefaultValueTest, WorksForConstTypes) {
+  EXPECT_EQ("", BuiltInDefaultValue<const std::string>::Get());
+  EXPECT_EQ(0, BuiltInDefaultValue<const int>::Get());
+  EXPECT_TRUE(BuiltInDefaultValue<char* const>::Get() == nullptr);
+  EXPECT_FALSE(BuiltInDefaultValue<const bool>::Get());
+}
+
+// A type that's default constructible.
+class MyDefaultConstructible {
+ public:
+  MyDefaultConstructible() : value_(42) {}
+
+  int value() const { return value_; }
+
+ private:
+  int value_;
+};
+
+// A type that's not default constructible.
+class MyNonDefaultConstructible {
+ public:
+  // Does not have a default ctor.
+  explicit MyNonDefaultConstructible(int a_value) : value_(a_value) {}
+
+  int value() const { return value_; }
+
+ private:
+  int value_;
+};
+
+
+TEST(BuiltInDefaultValueTest, ExistsForDefaultConstructibleType) {
+  EXPECT_TRUE(BuiltInDefaultValue<MyDefaultConstructible>::Exists());
+}
+
+TEST(BuiltInDefaultValueTest, IsDefaultConstructedForDefaultConstructibleType) {
+  EXPECT_EQ(42, BuiltInDefaultValue<MyDefaultConstructible>::Get().value());
+}
+
+
+TEST(BuiltInDefaultValueTest, DoesNotExistForNonDefaultConstructibleType) {
+  EXPECT_FALSE(BuiltInDefaultValue<MyNonDefaultConstructible>::Exists());
+}
+
+// Tests that BuiltInDefaultValue<T&>::Get() aborts the program.
+TEST(BuiltInDefaultValueDeathTest, IsUndefinedForReferences) {
+  EXPECT_DEATH_IF_SUPPORTED({
+    BuiltInDefaultValue<int&>::Get();
+  }, "");
+  EXPECT_DEATH_IF_SUPPORTED({
+    BuiltInDefaultValue<const char&>::Get();
+  }, "");
+}
+
+TEST(BuiltInDefaultValueDeathTest, IsUndefinedForNonDefaultConstructibleType) {
+  EXPECT_DEATH_IF_SUPPORTED({
+    BuiltInDefaultValue<MyNonDefaultConstructible>::Get();
+  }, "");
+}
+
+// Tests that DefaultValue<T>::IsSet() is false initially.
+TEST(DefaultValueTest, IsInitiallyUnset) {
+  EXPECT_FALSE(DefaultValue<int>::IsSet());
+  EXPECT_FALSE(DefaultValue<MyDefaultConstructible>::IsSet());
+  EXPECT_FALSE(DefaultValue<const MyNonDefaultConstructible>::IsSet());
+}
+
+// Tests that DefaultValue<T> can be set and then unset.
+TEST(DefaultValueTest, CanBeSetAndUnset) {
+  EXPECT_TRUE(DefaultValue<int>::Exists());
+  EXPECT_FALSE(DefaultValue<const MyNonDefaultConstructible>::Exists());
+
+  DefaultValue<int>::Set(1);
+  DefaultValue<const MyNonDefaultConstructible>::Set(
+      MyNonDefaultConstructible(42));
+
+  EXPECT_EQ(1, DefaultValue<int>::Get());
+  EXPECT_EQ(42, DefaultValue<const MyNonDefaultConstructible>::Get().value());
+
+  EXPECT_TRUE(DefaultValue<int>::Exists());
+  EXPECT_TRUE(DefaultValue<const MyNonDefaultConstructible>::Exists());
+
+  DefaultValue<int>::Clear();
+  DefaultValue<const MyNonDefaultConstructible>::Clear();
+
+  EXPECT_FALSE(DefaultValue<int>::IsSet());
+  EXPECT_FALSE(DefaultValue<const MyNonDefaultConstructible>::IsSet());
+
+  EXPECT_TRUE(DefaultValue<int>::Exists());
+  EXPECT_FALSE(DefaultValue<const MyNonDefaultConstructible>::Exists());
+}
+
+// Tests that DefaultValue<T>::Get() returns the
+// BuiltInDefaultValue<T>::Get() when DefaultValue<T>::IsSet() is
+// false.
+TEST(DefaultValueDeathTest, GetReturnsBuiltInDefaultValueWhenUnset) {
+  EXPECT_FALSE(DefaultValue<int>::IsSet());
+  EXPECT_TRUE(DefaultValue<int>::Exists());
+  EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible>::IsSet());
+  EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible>::Exists());
+
+  EXPECT_EQ(0, DefaultValue<int>::Get());
+
+  EXPECT_DEATH_IF_SUPPORTED({
+    DefaultValue<MyNonDefaultConstructible>::Get();
+  }, "");
+}
+
+TEST(DefaultValueTest, GetWorksForMoveOnlyIfSet) {
+  EXPECT_TRUE(DefaultValue<std::unique_ptr<int>>::Exists());
+  EXPECT_TRUE(DefaultValue<std::unique_ptr<int>>::Get() == nullptr);
+  DefaultValue<std::unique_ptr<int>>::SetFactory([] {
+    return std::unique_ptr<int>(new int(42));
+  });
+  EXPECT_TRUE(DefaultValue<std::unique_ptr<int>>::Exists());
+  std::unique_ptr<int> i = DefaultValue<std::unique_ptr<int>>::Get();
+  EXPECT_EQ(42, *i);
+}
+
+// Tests that DefaultValue<void>::Get() returns void.
+TEST(DefaultValueTest, GetWorksForVoid) {
+  return DefaultValue<void>::Get();
+}
+
+// Tests using DefaultValue with a reference type.
+
+// Tests that DefaultValue<T&>::IsSet() is false initially.
+TEST(DefaultValueOfReferenceTest, IsInitiallyUnset) {
+  EXPECT_FALSE(DefaultValue<int&>::IsSet());
+  EXPECT_FALSE(DefaultValue<MyDefaultConstructible&>::IsSet());
+  EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible&>::IsSet());
+}
+
+// Tests that DefaultValue<T&>::Exists is false initiallly.
+TEST(DefaultValueOfReferenceTest, IsInitiallyNotExisting) {
+  EXPECT_FALSE(DefaultValue<int&>::Exists());
+  EXPECT_FALSE(DefaultValue<MyDefaultConstructible&>::Exists());
+  EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible&>::Exists());
+}
+
+// Tests that DefaultValue<T&> can be set and then unset.
+TEST(DefaultValueOfReferenceTest, CanBeSetAndUnset) {
+  int n = 1;
+  DefaultValue<const int&>::Set(n);
+  MyNonDefaultConstructible x(42);
+  DefaultValue<MyNonDefaultConstructible&>::Set(x);
+
+  EXPECT_TRUE(DefaultValue<const int&>::Exists());
+  EXPECT_TRUE(DefaultValue<MyNonDefaultConstructible&>::Exists());
+
+  EXPECT_EQ(&n, &(DefaultValue<const int&>::Get()));
+  EXPECT_EQ(&x, &(DefaultValue<MyNonDefaultConstructible&>::Get()));
+
+  DefaultValue<const int&>::Clear();
+  DefaultValue<MyNonDefaultConstructible&>::Clear();
+
+  EXPECT_FALSE(DefaultValue<const int&>::Exists());
+  EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible&>::Exists());
+
+  EXPECT_FALSE(DefaultValue<const int&>::IsSet());
+  EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible&>::IsSet());
+}
+
+// Tests that DefaultValue<T&>::Get() returns the
+// BuiltInDefaultValue<T&>::Get() when DefaultValue<T&>::IsSet() is
+// false.
+TEST(DefaultValueOfReferenceDeathTest, GetReturnsBuiltInDefaultValueWhenUnset) {
+  EXPECT_FALSE(DefaultValue<int&>::IsSet());
+  EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible&>::IsSet());
+
+  EXPECT_DEATH_IF_SUPPORTED({
+    DefaultValue<int&>::Get();
+  }, "");
+  EXPECT_DEATH_IF_SUPPORTED({
+    DefaultValue<MyNonDefaultConstructible>::Get();
+  }, "");
+}
+
+// Tests that ActionInterface can be implemented by defining the
+// Perform method.
+
+typedef int MyGlobalFunction(bool, int);
+
+class MyActionImpl : public ActionInterface<MyGlobalFunction> {
+ public:
+  int Perform(const std::tuple<bool, int>& args) override {
+    return std::get<0>(args) ? std::get<1>(args) : 0;
+  }
+};
+
+TEST(ActionInterfaceTest, CanBeImplementedByDefiningPerform) {
+  MyActionImpl my_action_impl;
+  (void)my_action_impl;
+}
+
+TEST(ActionInterfaceTest, MakeAction) {
+  Action<MyGlobalFunction> action = MakeAction(new MyActionImpl);
+
+  // When exercising the Perform() method of Action<F>, we must pass
+  // it a tuple whose size and type are compatible with F's argument
+  // types.  For example, if F is int(), then Perform() takes a
+  // 0-tuple; if F is void(bool, int), then Perform() takes a
+  // std::tuple<bool, int>, and so on.
+  EXPECT_EQ(5, action.Perform(std::make_tuple(true, 5)));
+}
+
+// Tests that Action<F> can be contructed from a pointer to
+// ActionInterface<F>.
+TEST(ActionTest, CanBeConstructedFromActionInterface) {
+  Action<MyGlobalFunction> action(new MyActionImpl);
+}
+
+// Tests that Action<F> delegates actual work to ActionInterface<F>.
+TEST(ActionTest, DelegatesWorkToActionInterface) {
+  const Action<MyGlobalFunction> action(new MyActionImpl);
+
+  EXPECT_EQ(5, action.Perform(std::make_tuple(true, 5)));
+  EXPECT_EQ(0, action.Perform(std::make_tuple(false, 1)));
+}
+
+// Tests that Action<F> can be copied.
+TEST(ActionTest, IsCopyable) {
+  Action<MyGlobalFunction> a1(new MyActionImpl);
+  Action<MyGlobalFunction> a2(a1);  // Tests the copy constructor.
+
+  // a1 should continue to work after being copied from.
+  EXPECT_EQ(5, a1.Perform(std::make_tuple(true, 5)));
+  EXPECT_EQ(0, a1.Perform(std::make_tuple(false, 1)));
+
+  // a2 should work like the action it was copied from.
+  EXPECT_EQ(5, a2.Perform(std::make_tuple(true, 5)));
+  EXPECT_EQ(0, a2.Perform(std::make_tuple(false, 1)));
+
+  a2 = a1;  // Tests the assignment operator.
+
+  // a1 should continue to work after being copied from.
+  EXPECT_EQ(5, a1.Perform(std::make_tuple(true, 5)));
+  EXPECT_EQ(0, a1.Perform(std::make_tuple(false, 1)));
+
+  // a2 should work like the action it was copied from.
+  EXPECT_EQ(5, a2.Perform(std::make_tuple(true, 5)));
+  EXPECT_EQ(0, a2.Perform(std::make_tuple(false, 1)));
+}
+
+// Tests that an Action<From> object can be converted to a
+// compatible Action<To> object.
+
+class IsNotZero : public ActionInterface<bool(int)> {  // NOLINT
+ public:
+  bool Perform(const std::tuple<int>& arg) override {
+    return std::get<0>(arg) != 0;
+  }
+};
+
+TEST(ActionTest, CanBeConvertedToOtherActionType) {
+  const Action<bool(int)> a1(new IsNotZero);  // NOLINT
+  const Action<int(char)> a2 = Action<int(char)>(a1);  // NOLINT
+  EXPECT_EQ(1, a2.Perform(std::make_tuple('a')));
+  EXPECT_EQ(0, a2.Perform(std::make_tuple('\0')));
+}
+
+// The following two classes are for testing MakePolymorphicAction().
+
+// Implements a polymorphic action that returns the second of the
+// arguments it receives.
+class ReturnSecondArgumentAction {
+ public:
+  // We want to verify that MakePolymorphicAction() can work with a
+  // polymorphic action whose Perform() method template is either
+  // const or not.  This lets us verify the non-const case.
+  template <typename Result, typename ArgumentTuple>
+  Result Perform(const ArgumentTuple& args) {
+    return std::get<1>(args);
+  }
+};
+
+// Implements a polymorphic action that can be used in a nullary
+// function to return 0.
+class ReturnZeroFromNullaryFunctionAction {
+ public:
+  // For testing that MakePolymorphicAction() works when the
+  // implementation class' Perform() method template takes only one
+  // template parameter.
+  //
+  // We want to verify that MakePolymorphicAction() can work with a
+  // polymorphic action whose Perform() method template is either
+  // const or not.  This lets us verify the const case.
+  template <typename Result>
+  Result Perform(const std::tuple<>&) const {
+    return 0;
+  }
+};
+
+// These functions verify that MakePolymorphicAction() returns a
+// PolymorphicAction<T> where T is the argument's type.
+
+PolymorphicAction<ReturnSecondArgumentAction> ReturnSecondArgument() {
+  return MakePolymorphicAction(ReturnSecondArgumentAction());
+}
+
+PolymorphicAction<ReturnZeroFromNullaryFunctionAction>
+ReturnZeroFromNullaryFunction() {
+  return MakePolymorphicAction(ReturnZeroFromNullaryFunctionAction());
+}
+
+// Tests that MakePolymorphicAction() turns a polymorphic action
+// implementation class into a polymorphic action.
+TEST(MakePolymorphicActionTest, ConstructsActionFromImpl) {
+  Action<int(bool, int, double)> a1 = ReturnSecondArgument();  // NOLINT
+  EXPECT_EQ(5, a1.Perform(std::make_tuple(false, 5, 2.0)));
+}
+
+// Tests that MakePolymorphicAction() works when the implementation
+// class' Perform() method template has only one template parameter.
+TEST(MakePolymorphicActionTest, WorksWhenPerformHasOneTemplateParameter) {
+  Action<int()> a1 = ReturnZeroFromNullaryFunction();
+  EXPECT_EQ(0, a1.Perform(std::make_tuple()));
+
+  Action<void*()> a2 = ReturnZeroFromNullaryFunction();
+  EXPECT_TRUE(a2.Perform(std::make_tuple()) == nullptr);
+}
+
+// Tests that Return() works as an action for void-returning
+// functions.
+TEST(ReturnTest, WorksForVoid) {
+  const Action<void(int)> ret = Return();  // NOLINT
+  return ret.Perform(std::make_tuple(1));
+}
+
+// Tests that Return(v) returns v.
+TEST(ReturnTest, ReturnsGivenValue) {
+  Action<int()> ret = Return(1);  // NOLINT
+  EXPECT_EQ(1, ret.Perform(std::make_tuple()));
+
+  ret = Return(-5);
+  EXPECT_EQ(-5, ret.Perform(std::make_tuple()));
+}
+
+// Tests that Return("string literal") works.
+TEST(ReturnTest, AcceptsStringLiteral) {
+  Action<const char*()> a1 = Return("Hello");
+  EXPECT_STREQ("Hello", a1.Perform(std::make_tuple()));
+
+  Action<std::string()> a2 = Return("world");
+  EXPECT_EQ("world", a2.Perform(std::make_tuple()));
+}
+
+// Test struct which wraps a vector of integers. Used in
+// 'SupportsWrapperReturnType' test.
+struct IntegerVectorWrapper {
+  std::vector<int> * v;
+  IntegerVectorWrapper(std::vector<int>& _v) : v(&_v) {}  // NOLINT
+};
+
+// Tests that Return() works when return type is a wrapper type.
+TEST(ReturnTest, SupportsWrapperReturnType) {
+  // Initialize vector of integers.
+  std::vector<int> v;
+  for (int i = 0; i < 5; ++i) v.push_back(i);
+
+  // Return() called with 'v' as argument. The Action will return the same data
+  // as 'v' (copy) but it will be wrapped in an IntegerVectorWrapper.
+  Action<IntegerVectorWrapper()> a = Return(v);
+  const std::vector<int>& result = *(a.Perform(std::make_tuple()).v);
+  EXPECT_THAT(result, ::testing::ElementsAre(0, 1, 2, 3, 4));
+}
+
+// Tests that Return(v) is covaraint.
+
+struct Base {
+  bool operator==(const Base&) { return true; }
+};
+
+struct Derived : public Base {
+  bool operator==(const Derived&) { return true; }
+};
+
+TEST(ReturnTest, IsCovariant) {
+  Base base;
+  Derived derived;
+  Action<Base*()> ret = Return(&base);
+  EXPECT_EQ(&base, ret.Perform(std::make_tuple()));
+
+  ret = Return(&derived);
+  EXPECT_EQ(&derived, ret.Perform(std::make_tuple()));
+}
+
+// Tests that the type of the value passed into Return is converted into T
+// when the action is cast to Action<T(...)> rather than when the action is
+// performed. See comments on testing::internal::ReturnAction in
+// gmock-actions.h for more information.
+class FromType {
+ public:
+  explicit FromType(bool* is_converted) : converted_(is_converted) {}
+  bool* converted() const { return converted_; }
+
+ private:
+  bool* const converted_;
+
+  GTEST_DISALLOW_ASSIGN_(FromType);
+};
+
+class ToType {
+ public:
+  // Must allow implicit conversion due to use in ImplicitCast_<T>.
+  ToType(const FromType& x) { *x.converted() = true; }  // NOLINT
+};
+
+TEST(ReturnTest, ConvertsArgumentWhenConverted) {
+  bool converted = false;
+  FromType x(&converted);
+  Action<ToType()> action(Return(x));
+  EXPECT_TRUE(converted) << "Return must convert its argument in its own "
+                         << "conversion operator.";
+  converted = false;
+  action.Perform(std::tuple<>());
+  EXPECT_FALSE(converted) << "Action must NOT convert its argument "
+                          << "when performed.";
+}
+
+class DestinationType {};
+
+class SourceType {
+ public:
+  // Note: a non-const typecast operator.
+  operator DestinationType() { return DestinationType(); }
+};
+
+TEST(ReturnTest, CanConvertArgumentUsingNonConstTypeCastOperator) {
+  SourceType s;
+  Action<DestinationType()> action(Return(s));
+}
+
+// Tests that ReturnNull() returns NULL in a pointer-returning function.
+TEST(ReturnNullTest, WorksInPointerReturningFunction) {
+  const Action<int*()> a1 = ReturnNull();
+  EXPECT_TRUE(a1.Perform(std::make_tuple()) == nullptr);
+
+  const Action<const char*(bool)> a2 = ReturnNull();  // NOLINT
+  EXPECT_TRUE(a2.Perform(std::make_tuple(true)) == nullptr);
+}
+
+// Tests that ReturnNull() returns NULL for shared_ptr and unique_ptr returning
+// functions.
+TEST(ReturnNullTest, WorksInSmartPointerReturningFunction) {
+  const Action<std::unique_ptr<const int>()> a1 = ReturnNull();
+  EXPECT_TRUE(a1.Perform(std::make_tuple()) == nullptr);
+
+  const Action<std::shared_ptr<int>(std::string)> a2 = ReturnNull();
+  EXPECT_TRUE(a2.Perform(std::make_tuple("foo")) == nullptr);
+}
+
+// Tests that ReturnRef(v) works for reference types.
+TEST(ReturnRefTest, WorksForReference) {
+  const int n = 0;
+  const Action<const int&(bool)> ret = ReturnRef(n);  // NOLINT
+
+  EXPECT_EQ(&n, &ret.Perform(std::make_tuple(true)));
+}
+
+// Tests that ReturnRef(v) is covariant.
+TEST(ReturnRefTest, IsCovariant) {
+  Base base;
+  Derived derived;
+  Action<Base&()> a = ReturnRef(base);
+  EXPECT_EQ(&base, &a.Perform(std::make_tuple()));
+
+  a = ReturnRef(derived);
+  EXPECT_EQ(&derived, &a.Perform(std::make_tuple()));
+}
+
+// Tests that ReturnRefOfCopy(v) works for reference types.
+TEST(ReturnRefOfCopyTest, WorksForReference) {
+  int n = 42;
+  const Action<const int&()> ret = ReturnRefOfCopy(n);
+
+  EXPECT_NE(&n, &ret.Perform(std::make_tuple()));
+  EXPECT_EQ(42, ret.Perform(std::make_tuple()));
+
+  n = 43;
+  EXPECT_NE(&n, &ret.Perform(std::make_tuple()));
+  EXPECT_EQ(42, ret.Perform(std::make_tuple()));
+}
+
+// Tests that ReturnRefOfCopy(v) is covariant.
+TEST(ReturnRefOfCopyTest, IsCovariant) {
+  Base base;
+  Derived derived;
+  Action<Base&()> a = ReturnRefOfCopy(base);
+  EXPECT_NE(&base, &a.Perform(std::make_tuple()));
+
+  a = ReturnRefOfCopy(derived);
+  EXPECT_NE(&derived, &a.Perform(std::make_tuple()));
+}
+
+// Tests that DoDefault() does the default action for the mock method.
+
+class MockClass {
+ public:
+  MockClass() {}
+
+  MOCK_METHOD1(IntFunc, int(bool flag));  // NOLINT
+  MOCK_METHOD0(Foo, MyNonDefaultConstructible());
+  MOCK_METHOD0(MakeUnique, std::unique_ptr<int>());
+  MOCK_METHOD0(MakeUniqueBase, std::unique_ptr<Base>());
+  MOCK_METHOD0(MakeVectorUnique, std::vector<std::unique_ptr<int>>());
+  MOCK_METHOD1(TakeUnique, int(std::unique_ptr<int>));
+  MOCK_METHOD2(TakeUnique,
+               int(const std::unique_ptr<int>&, std::unique_ptr<int>));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockClass);
+};
+
+// Tests that DoDefault() returns the built-in default value for the
+// return type by default.
+TEST(DoDefaultTest, ReturnsBuiltInDefaultValueByDefault) {
+  MockClass mock;
+  EXPECT_CALL(mock, IntFunc(_))
+      .WillOnce(DoDefault());
+  EXPECT_EQ(0, mock.IntFunc(true));
+}
+
+// Tests that DoDefault() throws (when exceptions are enabled) or aborts
+// the process when there is no built-in default value for the return type.
+TEST(DoDefaultDeathTest, DiesForUnknowType) {
+  MockClass mock;
+  EXPECT_CALL(mock, Foo())
+      .WillRepeatedly(DoDefault());
+#if GTEST_HAS_EXCEPTIONS
+  EXPECT_ANY_THROW(mock.Foo());
+#else
+  EXPECT_DEATH_IF_SUPPORTED({
+    mock.Foo();
+  }, "");
+#endif
+}
+
+// Tests that using DoDefault() inside a composite action leads to a
+// run-time error.
+
+void VoidFunc(bool /* flag */) {}
+
+TEST(DoDefaultDeathTest, DiesIfUsedInCompositeAction) {
+  MockClass mock;
+  EXPECT_CALL(mock, IntFunc(_))
+      .WillRepeatedly(DoAll(Invoke(VoidFunc),
+                            DoDefault()));
+
+  // Ideally we should verify the error message as well.  Sadly,
+  // EXPECT_DEATH() can only capture stderr, while Google Mock's
+  // errors are printed on stdout.  Therefore we have to settle for
+  // not verifying the message.
+  EXPECT_DEATH_IF_SUPPORTED({
+    mock.IntFunc(true);
+  }, "");
+}
+
+// Tests that DoDefault() returns the default value set by
+// DefaultValue<T>::Set() when it's not overriden by an ON_CALL().
+TEST(DoDefaultTest, ReturnsUserSpecifiedPerTypeDefaultValueWhenThereIsOne) {
+  DefaultValue<int>::Set(1);
+  MockClass mock;
+  EXPECT_CALL(mock, IntFunc(_))
+      .WillOnce(DoDefault());
+  EXPECT_EQ(1, mock.IntFunc(false));
+  DefaultValue<int>::Clear();
+}
+
+// Tests that DoDefault() does the action specified by ON_CALL().
+TEST(DoDefaultTest, DoesWhatOnCallSpecifies) {
+  MockClass mock;
+  ON_CALL(mock, IntFunc(_))
+      .WillByDefault(Return(2));
+  EXPECT_CALL(mock, IntFunc(_))
+      .WillOnce(DoDefault());
+  EXPECT_EQ(2, mock.IntFunc(false));
+}
+
+// Tests that using DoDefault() in ON_CALL() leads to a run-time failure.
+TEST(DoDefaultTest, CannotBeUsedInOnCall) {
+  MockClass mock;
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    ON_CALL(mock, IntFunc(_))
+      .WillByDefault(DoDefault());
+  }, "DoDefault() cannot be used in ON_CALL()");
+}
+
+// Tests that SetArgPointee<N>(v) sets the variable pointed to by
+// the N-th (0-based) argument to v.
+TEST(SetArgPointeeTest, SetsTheNthPointee) {
+  typedef void MyFunction(bool, int*, char*);
+  Action<MyFunction> a = SetArgPointee<1>(2);
+
+  int n = 0;
+  char ch = '\0';
+  a.Perform(std::make_tuple(true, &n, &ch));
+  EXPECT_EQ(2, n);
+  EXPECT_EQ('\0', ch);
+
+  a = SetArgPointee<2>('a');
+  n = 0;
+  ch = '\0';
+  a.Perform(std::make_tuple(true, &n, &ch));
+  EXPECT_EQ(0, n);
+  EXPECT_EQ('a', ch);
+}
+
+// Tests that SetArgPointee<N>() accepts a string literal.
+TEST(SetArgPointeeTest, AcceptsStringLiteral) {
+  typedef void MyFunction(std::string*, const char**);
+  Action<MyFunction> a = SetArgPointee<0>("hi");
+  std::string str;
+  const char* ptr = nullptr;
+  a.Perform(std::make_tuple(&str, &ptr));
+  EXPECT_EQ("hi", str);
+  EXPECT_TRUE(ptr == nullptr);
+
+  a = SetArgPointee<1>("world");
+  str = "";
+  a.Perform(std::make_tuple(&str, &ptr));
+  EXPECT_EQ("", str);
+  EXPECT_STREQ("world", ptr);
+}
+
+TEST(SetArgPointeeTest, AcceptsWideStringLiteral) {
+  typedef void MyFunction(const wchar_t**);
+  Action<MyFunction> a = SetArgPointee<0>(L"world");
+  const wchar_t* ptr = nullptr;
+  a.Perform(std::make_tuple(&ptr));
+  EXPECT_STREQ(L"world", ptr);
+
+# if GTEST_HAS_STD_WSTRING
+
+  typedef void MyStringFunction(std::wstring*);
+  Action<MyStringFunction> a2 = SetArgPointee<0>(L"world");
+  std::wstring str = L"";
+  a2.Perform(std::make_tuple(&str));
+  EXPECT_EQ(L"world", str);
+
+# endif
+}
+
+// Tests that SetArgPointee<N>() accepts a char pointer.
+TEST(SetArgPointeeTest, AcceptsCharPointer) {
+  typedef void MyFunction(bool, std::string*, const char**);
+  const char* const hi = "hi";
+  Action<MyFunction> a = SetArgPointee<1>(hi);
+  std::string str;
+  const char* ptr = nullptr;
+  a.Perform(std::make_tuple(true, &str, &ptr));
+  EXPECT_EQ("hi", str);
+  EXPECT_TRUE(ptr == nullptr);
+
+  char world_array[] = "world";
+  char* const world = world_array;
+  a = SetArgPointee<2>(world);
+  str = "";
+  a.Perform(std::make_tuple(true, &str, &ptr));
+  EXPECT_EQ("", str);
+  EXPECT_EQ(world, ptr);
+}
+
+TEST(SetArgPointeeTest, AcceptsWideCharPointer) {
+  typedef void MyFunction(bool, const wchar_t**);
+  const wchar_t* const hi = L"hi";
+  Action<MyFunction> a = SetArgPointee<1>(hi);
+  const wchar_t* ptr = nullptr;
+  a.Perform(std::make_tuple(true, &ptr));
+  EXPECT_EQ(hi, ptr);
+
+# if GTEST_HAS_STD_WSTRING
+
+  typedef void MyStringFunction(bool, std::wstring*);
+  wchar_t world_array[] = L"world";
+  wchar_t* const world = world_array;
+  Action<MyStringFunction> a2 = SetArgPointee<1>(world);
+  std::wstring str;
+  a2.Perform(std::make_tuple(true, &str));
+  EXPECT_EQ(world_array, str);
+# endif
+}
+
+// Tests that SetArgumentPointee<N>(v) sets the variable pointed to by
+// the N-th (0-based) argument to v.
+TEST(SetArgumentPointeeTest, SetsTheNthPointee) {
+  typedef void MyFunction(bool, int*, char*);
+  Action<MyFunction> a = SetArgumentPointee<1>(2);
+
+  int n = 0;
+  char ch = '\0';
+  a.Perform(std::make_tuple(true, &n, &ch));
+  EXPECT_EQ(2, n);
+  EXPECT_EQ('\0', ch);
+
+  a = SetArgumentPointee<2>('a');
+  n = 0;
+  ch = '\0';
+  a.Perform(std::make_tuple(true, &n, &ch));
+  EXPECT_EQ(0, n);
+  EXPECT_EQ('a', ch);
+}
+
+// Sample functions and functors for testing Invoke() and etc.
+int Nullary() { return 1; }
+
+class NullaryFunctor {
+ public:
+  int operator()() { return 2; }
+};
+
+bool g_done = false;
+void VoidNullary() { g_done = true; }
+
+class VoidNullaryFunctor {
+ public:
+  void operator()() { g_done = true; }
+};
+
+short Short(short n) { return n; }  // NOLINT
+char Char(char ch) { return ch; }
+
+const char* CharPtr(const char* s) { return s; }
+
+bool Unary(int x) { return x < 0; }
+
+const char* Binary(const char* input, short n) { return input + n; }  // NOLINT
+
+void VoidBinary(int, char) { g_done = true; }
+
+int Ternary(int x, char y, short z) { return x + y + z; }  // NOLINT
+
+int SumOf4(int a, int b, int c, int d) { return a + b + c + d; }
+
+class Foo {
+ public:
+  Foo() : value_(123) {}
+
+  int Nullary() const { return value_; }
+
+ private:
+  int value_;
+};
+
+// Tests InvokeWithoutArgs(function).
+TEST(InvokeWithoutArgsTest, Function) {
+  // As an action that takes one argument.
+  Action<int(int)> a = InvokeWithoutArgs(Nullary);  // NOLINT
+  EXPECT_EQ(1, a.Perform(std::make_tuple(2)));
+
+  // As an action that takes two arguments.
+  Action<int(int, double)> a2 = InvokeWithoutArgs(Nullary);  // NOLINT
+  EXPECT_EQ(1, a2.Perform(std::make_tuple(2, 3.5)));
+
+  // As an action that returns void.
+  Action<void(int)> a3 = InvokeWithoutArgs(VoidNullary);  // NOLINT
+  g_done = false;
+  a3.Perform(std::make_tuple(1));
+  EXPECT_TRUE(g_done);
+}
+
+// Tests InvokeWithoutArgs(functor).
+TEST(InvokeWithoutArgsTest, Functor) {
+  // As an action that takes no argument.
+  Action<int()> a = InvokeWithoutArgs(NullaryFunctor());  // NOLINT
+  EXPECT_EQ(2, a.Perform(std::make_tuple()));
+
+  // As an action that takes three arguments.
+  Action<int(int, double, char)> a2 =  // NOLINT
+      InvokeWithoutArgs(NullaryFunctor());
+  EXPECT_EQ(2, a2.Perform(std::make_tuple(3, 3.5, 'a')));
+
+  // As an action that returns void.
+  Action<void()> a3 = InvokeWithoutArgs(VoidNullaryFunctor());
+  g_done = false;
+  a3.Perform(std::make_tuple());
+  EXPECT_TRUE(g_done);
+}
+
+// Tests InvokeWithoutArgs(obj_ptr, method).
+TEST(InvokeWithoutArgsTest, Method) {
+  Foo foo;
+  Action<int(bool, char)> a =  // NOLINT
+      InvokeWithoutArgs(&foo, &Foo::Nullary);
+  EXPECT_EQ(123, a.Perform(std::make_tuple(true, 'a')));
+}
+
+// Tests using IgnoreResult() on a polymorphic action.
+TEST(IgnoreResultTest, PolymorphicAction) {
+  Action<void(int)> a = IgnoreResult(Return(5));  // NOLINT
+  a.Perform(std::make_tuple(1));
+}
+
+// Tests using IgnoreResult() on a monomorphic action.
+
+int ReturnOne() {
+  g_done = true;
+  return 1;
+}
+
+TEST(IgnoreResultTest, MonomorphicAction) {
+  g_done = false;
+  Action<void()> a = IgnoreResult(Invoke(ReturnOne));
+  a.Perform(std::make_tuple());
+  EXPECT_TRUE(g_done);
+}
+
+// Tests using IgnoreResult() on an action that returns a class type.
+
+MyNonDefaultConstructible ReturnMyNonDefaultConstructible(double /* x */) {
+  g_done = true;
+  return MyNonDefaultConstructible(42);
+}
+
+TEST(IgnoreResultTest, ActionReturningClass) {
+  g_done = false;
+  Action<void(int)> a =
+      IgnoreResult(Invoke(ReturnMyNonDefaultConstructible));  // NOLINT
+  a.Perform(std::make_tuple(2));
+  EXPECT_TRUE(g_done);
+}
+
+TEST(AssignTest, Int) {
+  int x = 0;
+  Action<void(int)> a = Assign(&x, 5);
+  a.Perform(std::make_tuple(0));
+  EXPECT_EQ(5, x);
+}
+
+TEST(AssignTest, String) {
+  ::std::string x;
+  Action<void(void)> a = Assign(&x, "Hello, world");
+  a.Perform(std::make_tuple());
+  EXPECT_EQ("Hello, world", x);
+}
+
+TEST(AssignTest, CompatibleTypes) {
+  double x = 0;
+  Action<void(int)> a = Assign(&x, 5);
+  a.Perform(std::make_tuple(0));
+  EXPECT_DOUBLE_EQ(5, x);
+}
+
+
+// Tests using WithArgs and with an action that takes 1 argument.
+TEST(WithArgsTest, OneArg) {
+  Action<bool(double x, int n)> a = WithArgs<1>(Invoke(Unary));  // NOLINT
+  EXPECT_TRUE(a.Perform(std::make_tuple(1.5, -1)));
+  EXPECT_FALSE(a.Perform(std::make_tuple(1.5, 1)));
+}
+
+// Tests using WithArgs with an action that takes 2 arguments.
+TEST(WithArgsTest, TwoArgs) {
+  Action<const char*(const char* s, double x, short n)> a =  // NOLINT
+      WithArgs<0, 2>(Invoke(Binary));
+  const char s[] = "Hello";
+  EXPECT_EQ(s + 2, a.Perform(std::make_tuple(CharPtr(s), 0.5, Short(2))));
+}
+
+struct ConcatAll {
+  std::string operator()() const { return {}; }
+  template <typename... I>
+  std::string operator()(const char* a, I... i) const {
+    return a + ConcatAll()(i...);
+  }
+};
+
+// Tests using WithArgs with an action that takes 10 arguments.
+TEST(WithArgsTest, TenArgs) {
+  Action<std::string(const char*, const char*, const char*, const char*)> a =
+      WithArgs<0, 1, 2, 3, 2, 1, 0, 1, 2, 3>(Invoke(ConcatAll{}));
+  EXPECT_EQ("0123210123",
+            a.Perform(std::make_tuple(CharPtr("0"), CharPtr("1"), CharPtr("2"),
+                                      CharPtr("3"))));
+}
+
+// Tests using WithArgs with an action that is not Invoke().
+class SubtractAction : public ActionInterface<int(int, int)> {
+ public:
+  int Perform(const std::tuple<int, int>& args) override {
+    return std::get<0>(args) - std::get<1>(args);
+  }
+};
+
+TEST(WithArgsTest, NonInvokeAction) {
+  Action<int(const std::string&, int, int)> a =
+      WithArgs<2, 1>(MakeAction(new SubtractAction));
+  std::tuple<std::string, int, int> dummy =
+      std::make_tuple(std::string("hi"), 2, 10);
+  EXPECT_EQ(8, a.Perform(dummy));
+}
+
+// Tests using WithArgs to pass all original arguments in the original order.
+TEST(WithArgsTest, Identity) {
+  Action<int(int x, char y, short z)> a =  // NOLINT
+      WithArgs<0, 1, 2>(Invoke(Ternary));
+  EXPECT_EQ(123, a.Perform(std::make_tuple(100, Char(20), Short(3))));
+}
+
+// Tests using WithArgs with repeated arguments.
+TEST(WithArgsTest, RepeatedArguments) {
+  Action<int(bool, int m, int n)> a =  // NOLINT
+      WithArgs<1, 1, 1, 1>(Invoke(SumOf4));
+  EXPECT_EQ(4, a.Perform(std::make_tuple(false, 1, 10)));
+}
+
+// Tests using WithArgs with reversed argument order.
+TEST(WithArgsTest, ReversedArgumentOrder) {
+  Action<const char*(short n, const char* input)> a =  // NOLINT
+      WithArgs<1, 0>(Invoke(Binary));
+  const char s[] = "Hello";
+  EXPECT_EQ(s + 2, a.Perform(std::make_tuple(Short(2), CharPtr(s))));
+}
+
+// Tests using WithArgs with compatible, but not identical, argument types.
+TEST(WithArgsTest, ArgsOfCompatibleTypes) {
+  Action<long(short x, char y, double z, char c)> a =  // NOLINT
+      WithArgs<0, 1, 3>(Invoke(Ternary));
+  EXPECT_EQ(123,
+            a.Perform(std::make_tuple(Short(100), Char(20), 5.6, Char(3))));
+}
+
+// Tests using WithArgs with an action that returns void.
+TEST(WithArgsTest, VoidAction) {
+  Action<void(double x, char c, int n)> a = WithArgs<2, 1>(Invoke(VoidBinary));
+  g_done = false;
+  a.Perform(std::make_tuple(1.5, 'a', 3));
+  EXPECT_TRUE(g_done);
+}
+
+TEST(WithArgsTest, ReturnReference) {
+  Action<int&(int&, void*)> aa = WithArgs<0>([](int& a) -> int& { return a; });
+  int i = 0;
+  const int& res = aa.Perform(std::forward_as_tuple(i, nullptr));
+  EXPECT_EQ(&i, &res);
+}
+
+TEST(WithArgsTest, InnerActionWithConversion) {
+  Action<Derived*()> inner = [] { return nullptr; };
+  Action<Base*(double)> a = testing::WithoutArgs(inner);
+  EXPECT_EQ(nullptr, a.Perform(std::make_tuple(1.1)));
+}
+
+#if !GTEST_OS_WINDOWS_MOBILE
+
+class SetErrnoAndReturnTest : public testing::Test {
+ protected:
+  void SetUp() override { errno = 0; }
+  void TearDown() override { errno = 0; }
+};
+
+TEST_F(SetErrnoAndReturnTest, Int) {
+  Action<int(void)> a = SetErrnoAndReturn(ENOTTY, -5);
+  EXPECT_EQ(-5, a.Perform(std::make_tuple()));
+  EXPECT_EQ(ENOTTY, errno);
+}
+
+TEST_F(SetErrnoAndReturnTest, Ptr) {
+  int x;
+  Action<int*(void)> a = SetErrnoAndReturn(ENOTTY, &x);
+  EXPECT_EQ(&x, a.Perform(std::make_tuple()));
+  EXPECT_EQ(ENOTTY, errno);
+}
+
+TEST_F(SetErrnoAndReturnTest, CompatibleTypes) {
+  Action<double()> a = SetErrnoAndReturn(EINVAL, 5);
+  EXPECT_DOUBLE_EQ(5.0, a.Perform(std::make_tuple()));
+  EXPECT_EQ(EINVAL, errno);
+}
+
+#endif  // !GTEST_OS_WINDOWS_MOBILE
+
+// Tests ByRef().
+
+// Tests that the result of ByRef() is copyable.
+TEST(ByRefTest, IsCopyable) {
+  const std::string s1 = "Hi";
+  const std::string s2 = "Hello";
+
+  auto ref_wrapper = ByRef(s1);
+  const std::string& r1 = ref_wrapper;
+  EXPECT_EQ(&s1, &r1);
+
+  // Assigns a new value to ref_wrapper.
+  ref_wrapper = ByRef(s2);
+  const std::string& r2 = ref_wrapper;
+  EXPECT_EQ(&s2, &r2);
+
+  auto ref_wrapper1 = ByRef(s1);
+  // Copies ref_wrapper1 to ref_wrapper.
+  ref_wrapper = ref_wrapper1;
+  const std::string& r3 = ref_wrapper;
+  EXPECT_EQ(&s1, &r3);
+}
+
+// Tests using ByRef() on a const value.
+TEST(ByRefTest, ConstValue) {
+  const int n = 0;
+  // int& ref = ByRef(n);  // This shouldn't compile - we have a
+                           // negative compilation test to catch it.
+  const int& const_ref = ByRef(n);
+  EXPECT_EQ(&n, &const_ref);
+}
+
+// Tests using ByRef() on a non-const value.
+TEST(ByRefTest, NonConstValue) {
+  int n = 0;
+
+  // ByRef(n) can be used as either an int&,
+  int& ref = ByRef(n);
+  EXPECT_EQ(&n, &ref);
+
+  // or a const int&.
+  const int& const_ref = ByRef(n);
+  EXPECT_EQ(&n, &const_ref);
+}
+
+// Tests explicitly specifying the type when using ByRef().
+TEST(ByRefTest, ExplicitType) {
+  int n = 0;
+  const int& r1 = ByRef<const int>(n);
+  EXPECT_EQ(&n, &r1);
+
+  // ByRef<char>(n);  // This shouldn't compile - we have a negative
+                      // compilation test to catch it.
+
+  Derived d;
+  Derived& r2 = ByRef<Derived>(d);
+  EXPECT_EQ(&d, &r2);
+
+  const Derived& r3 = ByRef<const Derived>(d);
+  EXPECT_EQ(&d, &r3);
+
+  Base& r4 = ByRef<Base>(d);
+  EXPECT_EQ(&d, &r4);
+
+  const Base& r5 = ByRef<const Base>(d);
+  EXPECT_EQ(&d, &r5);
+
+  // The following shouldn't compile - we have a negative compilation
+  // test for it.
+  //
+  // Base b;
+  // ByRef<Derived>(b);
+}
+
+// Tests that Google Mock prints expression ByRef(x) as a reference to x.
+TEST(ByRefTest, PrintsCorrectly) {
+  int n = 42;
+  ::std::stringstream expected, actual;
+  testing::internal::UniversalPrinter<const int&>::Print(n, &expected);
+  testing::internal::UniversalPrint(ByRef(n), &actual);
+  EXPECT_EQ(expected.str(), actual.str());
+}
+
+
+std::unique_ptr<int> UniquePtrSource() {
+  return std::unique_ptr<int>(new int(19));
+}
+
+std::vector<std::unique_ptr<int>> VectorUniquePtrSource() {
+  std::vector<std::unique_ptr<int>> out;
+  out.emplace_back(new int(7));
+  return out;
+}
+
+TEST(MockMethodTest, CanReturnMoveOnlyValue_Return) {
+  MockClass mock;
+  std::unique_ptr<int> i(new int(19));
+  EXPECT_CALL(mock, MakeUnique()).WillOnce(Return(ByMove(std::move(i))));
+  EXPECT_CALL(mock, MakeVectorUnique())
+      .WillOnce(Return(ByMove(VectorUniquePtrSource())));
+  Derived* d = new Derived;
+  EXPECT_CALL(mock, MakeUniqueBase())
+      .WillOnce(Return(ByMove(std::unique_ptr<Derived>(d))));
+
+  std::unique_ptr<int> result1 = mock.MakeUnique();
+  EXPECT_EQ(19, *result1);
+
+  std::vector<std::unique_ptr<int>> vresult = mock.MakeVectorUnique();
+  EXPECT_EQ(1u, vresult.size());
+  EXPECT_NE(nullptr, vresult[0]);
+  EXPECT_EQ(7, *vresult[0]);
+
+  std::unique_ptr<Base> result2 = mock.MakeUniqueBase();
+  EXPECT_EQ(d, result2.get());
+}
+
+TEST(MockMethodTest, CanReturnMoveOnlyValue_DoAllReturn) {
+  testing::MockFunction<void()> mock_function;
+  MockClass mock;
+  std::unique_ptr<int> i(new int(19));
+  EXPECT_CALL(mock_function, Call());
+  EXPECT_CALL(mock, MakeUnique()).WillOnce(DoAll(
+      InvokeWithoutArgs(&mock_function, &testing::MockFunction<void()>::Call),
+      Return(ByMove(std::move(i)))));
+
+  std::unique_ptr<int> result1 = mock.MakeUnique();
+  EXPECT_EQ(19, *result1);
+}
+
+TEST(MockMethodTest, CanReturnMoveOnlyValue_Invoke) {
+  MockClass mock;
+
+  // Check default value
+  DefaultValue<std::unique_ptr<int>>::SetFactory([] {
+    return std::unique_ptr<int>(new int(42));
+  });
+  EXPECT_EQ(42, *mock.MakeUnique());
+
+  EXPECT_CALL(mock, MakeUnique()).WillRepeatedly(Invoke(UniquePtrSource));
+  EXPECT_CALL(mock, MakeVectorUnique())
+      .WillRepeatedly(Invoke(VectorUniquePtrSource));
+  std::unique_ptr<int> result1 = mock.MakeUnique();
+  EXPECT_EQ(19, *result1);
+  std::unique_ptr<int> result2 = mock.MakeUnique();
+  EXPECT_EQ(19, *result2);
+  EXPECT_NE(result1, result2);
+
+  std::vector<std::unique_ptr<int>> vresult = mock.MakeVectorUnique();
+  EXPECT_EQ(1u, vresult.size());
+  EXPECT_NE(nullptr, vresult[0]);
+  EXPECT_EQ(7, *vresult[0]);
+}
+
+TEST(MockMethodTest, CanTakeMoveOnlyValue) {
+  MockClass mock;
+  auto make = [](int i) { return std::unique_ptr<int>(new int(i)); };
+
+  EXPECT_CALL(mock, TakeUnique(_)).WillRepeatedly([](std::unique_ptr<int> i) {
+    return *i;
+  });
+  // DoAll() does not compile, since it would move from its arguments twice.
+  // EXPECT_CALL(mock, TakeUnique(_, _))
+  //     .WillRepeatedly(DoAll(Invoke([](std::unique_ptr<int> j) {}),
+  //     Return(1)));
+  EXPECT_CALL(mock, TakeUnique(testing::Pointee(7)))
+      .WillOnce(Return(-7))
+      .RetiresOnSaturation();
+  EXPECT_CALL(mock, TakeUnique(testing::IsNull()))
+      .WillOnce(Return(-1))
+      .RetiresOnSaturation();
+
+  EXPECT_EQ(5, mock.TakeUnique(make(5)));
+  EXPECT_EQ(-7, mock.TakeUnique(make(7)));
+  EXPECT_EQ(7, mock.TakeUnique(make(7)));
+  EXPECT_EQ(7, mock.TakeUnique(make(7)));
+  EXPECT_EQ(-1, mock.TakeUnique({}));
+
+  // Some arguments are moved, some passed by reference.
+  auto lvalue = make(6);
+  EXPECT_CALL(mock, TakeUnique(_, _))
+      .WillOnce([](const std::unique_ptr<int>& i, std::unique_ptr<int> j) {
+        return *i * *j;
+      });
+  EXPECT_EQ(42, mock.TakeUnique(lvalue, make(7)));
+
+  // The unique_ptr can be saved by the action.
+  std::unique_ptr<int> saved;
+  EXPECT_CALL(mock, TakeUnique(_)).WillOnce([&saved](std::unique_ptr<int> i) {
+    saved = std::move(i);
+    return 0;
+  });
+  EXPECT_EQ(0, mock.TakeUnique(make(42)));
+  EXPECT_EQ(42, *saved);
+}
+
+
+// Tests for std::function based action.
+
+int Add(int val, int& ref, int* ptr) {  // NOLINT
+  int result = val + ref + *ptr;
+  ref = 42;
+  *ptr = 43;
+  return result;
+}
+
+int Deref(std::unique_ptr<int> ptr) { return *ptr; }
+
+struct Double {
+  template <typename T>
+  T operator()(T t) { return 2 * t; }
+};
+
+std::unique_ptr<int> UniqueInt(int i) {
+  return std::unique_ptr<int>(new int(i));
+}
+
+TEST(FunctorActionTest, ActionFromFunction) {
+  Action<int(int, int&, int*)> a = &Add;
+  int x = 1, y = 2, z = 3;
+  EXPECT_EQ(6, a.Perform(std::forward_as_tuple(x, y, &z)));
+  EXPECT_EQ(42, y);
+  EXPECT_EQ(43, z);
+
+  Action<int(std::unique_ptr<int>)> a1 = &Deref;
+  EXPECT_EQ(7, a1.Perform(std::make_tuple(UniqueInt(7))));
+}
+
+TEST(FunctorActionTest, ActionFromLambda) {
+  Action<int(bool, int)> a1 = [](bool b, int i) { return b ? i : 0; };
+  EXPECT_EQ(5, a1.Perform(std::make_tuple(true, 5)));
+  EXPECT_EQ(0, a1.Perform(std::make_tuple(false, 5)));
+
+  std::unique_ptr<int> saved;
+  Action<void(std::unique_ptr<int>)> a2 = [&saved](std::unique_ptr<int> p) {
+    saved = std::move(p);
+  };
+  a2.Perform(std::make_tuple(UniqueInt(5)));
+  EXPECT_EQ(5, *saved);
+}
+
+TEST(FunctorActionTest, PolymorphicFunctor) {
+  Action<int(int)> ai = Double();
+  EXPECT_EQ(2, ai.Perform(std::make_tuple(1)));
+  Action<double(double)> ad = Double();  // Double? Double double!
+  EXPECT_EQ(3.0, ad.Perform(std::make_tuple(1.5)));
+}
+
+TEST(FunctorActionTest, TypeConversion) {
+  // Numeric promotions are allowed.
+  const Action<bool(int)> a1 = [](int i) { return i > 1; };
+  const Action<int(bool)> a2 = Action<int(bool)>(a1);
+  EXPECT_EQ(1, a1.Perform(std::make_tuple(42)));
+  EXPECT_EQ(0, a2.Perform(std::make_tuple(42)));
+
+  // Implicit constructors are allowed.
+  const Action<bool(std::string)> s1 = [](std::string s) { return !s.empty(); };
+  const Action<int(const char*)> s2 = Action<int(const char*)>(s1);
+  EXPECT_EQ(0, s2.Perform(std::make_tuple("")));
+  EXPECT_EQ(1, s2.Perform(std::make_tuple("hello")));
+
+  // Also between the lambda and the action itself.
+  const Action<bool(std::string)> x = [](Unused) { return 42; };
+  EXPECT_TRUE(x.Perform(std::make_tuple("hello")));
+}
+
+TEST(FunctorActionTest, UnusedArguments) {
+  // Verify that users can ignore uninteresting arguments.
+  Action<int(int, double y, double z)> a =
+      [](int i, Unused, Unused) { return 2 * i; };
+  std::tuple<int, double, double> dummy = std::make_tuple(3, 7.3, 9.44);
+  EXPECT_EQ(6, a.Perform(dummy));
+}
+
+// Test that basic built-in actions work with move-only arguments.
+TEST(MoveOnlyArgumentsTest, ReturningActions) {
+  Action<int(std::unique_ptr<int>)> a = Return(1);
+  EXPECT_EQ(1, a.Perform(std::make_tuple(nullptr)));
+
+  a = testing::WithoutArgs([]() { return 7; });
+  EXPECT_EQ(7, a.Perform(std::make_tuple(nullptr)));
+
+  Action<void(std::unique_ptr<int>, int*)> a2 = testing::SetArgPointee<1>(3);
+  int x = 0;
+  a2.Perform(std::make_tuple(nullptr, &x));
+  EXPECT_EQ(x, 3);
+}
+
+
+}  // Unnamed namespace
+
+#ifdef _MSC_VER
+#if _MSC_VER == 1900
+#  pragma warning(pop)
+#endif
+#endif
+
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-cardinalities_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-cardinalities_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ca97cae249246ba74853720ae4a50e0b28abf638
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-cardinalities_test.cc
@@ -0,0 +1,429 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests the built-in cardinalities.
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include "gtest/gtest-spi.h"
+
+namespace {
+
+using std::stringstream;
+using testing::AnyNumber;
+using testing::AtLeast;
+using testing::AtMost;
+using testing::Between;
+using testing::Cardinality;
+using testing::CardinalityInterface;
+using testing::Exactly;
+using testing::IsSubstring;
+using testing::MakeCardinality;
+
+class MockFoo {
+ public:
+  MockFoo() {}
+  MOCK_METHOD0(Bar, int());  // NOLINT
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFoo);
+};
+
+// Tests that Cardinality objects can be default constructed.
+TEST(CardinalityTest, IsDefaultConstructable) {
+  Cardinality c;
+}
+
+// Tests that Cardinality objects are copyable.
+TEST(CardinalityTest, IsCopyable) {
+  // Tests the copy constructor.
+  Cardinality c = Exactly(1);
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(0));
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(1));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(1));
+
+  // Tests the assignment operator.
+  c = Exactly(2);
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(2));
+}
+
+TEST(CardinalityTest, IsOverSaturatedByCallCountWorks) {
+  const Cardinality c = AtMost(5);
+  EXPECT_FALSE(c.IsOverSaturatedByCallCount(4));
+  EXPECT_FALSE(c.IsOverSaturatedByCallCount(5));
+  EXPECT_TRUE(c.IsOverSaturatedByCallCount(6));
+}
+
+// Tests that Cardinality::DescribeActualCallCountTo() creates the
+// correct description.
+TEST(CardinalityTest, CanDescribeActualCallCount) {
+  stringstream ss0;
+  Cardinality::DescribeActualCallCountTo(0, &ss0);
+  EXPECT_EQ("never called", ss0.str());
+
+  stringstream ss1;
+  Cardinality::DescribeActualCallCountTo(1, &ss1);
+  EXPECT_EQ("called once", ss1.str());
+
+  stringstream ss2;
+  Cardinality::DescribeActualCallCountTo(2, &ss2);
+  EXPECT_EQ("called twice", ss2.str());
+
+  stringstream ss3;
+  Cardinality::DescribeActualCallCountTo(3, &ss3);
+  EXPECT_EQ("called 3 times", ss3.str());
+}
+
+// Tests AnyNumber()
+TEST(AnyNumber, Works) {
+  const Cardinality c = AnyNumber();
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(0));
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(1));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(1));
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(9));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(9));
+
+  stringstream ss;
+  c.DescribeTo(&ss);
+  EXPECT_PRED_FORMAT2(IsSubstring, "called any number of times",
+                      ss.str());
+}
+
+TEST(AnyNumberTest, HasCorrectBounds) {
+  const Cardinality c = AnyNumber();
+  EXPECT_EQ(0, c.ConservativeLowerBound());
+  EXPECT_EQ(INT_MAX, c.ConservativeUpperBound());
+}
+
+// Tests AtLeast(n).
+
+TEST(AtLeastTest, OnNegativeNumber) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    AtLeast(-1);
+  }, "The invocation lower bound must be >= 0");
+}
+
+TEST(AtLeastTest, OnZero) {
+  const Cardinality c = AtLeast(0);
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(0));
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(1));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(1));
+
+  stringstream ss;
+  c.DescribeTo(&ss);
+  EXPECT_PRED_FORMAT2(IsSubstring, "any number of times",
+                      ss.str());
+}
+
+TEST(AtLeastTest, OnPositiveNumber) {
+  const Cardinality c = AtLeast(2);
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(0));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(0));
+
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(1));
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(2));
+
+  stringstream ss1;
+  AtLeast(1).DescribeTo(&ss1);
+  EXPECT_PRED_FORMAT2(IsSubstring, "at least once",
+                      ss1.str());
+
+  stringstream ss2;
+  c.DescribeTo(&ss2);
+  EXPECT_PRED_FORMAT2(IsSubstring, "at least twice",
+                      ss2.str());
+
+  stringstream ss3;
+  AtLeast(3).DescribeTo(&ss3);
+  EXPECT_PRED_FORMAT2(IsSubstring, "at least 3 times",
+                      ss3.str());
+}
+
+TEST(AtLeastTest, HasCorrectBounds) {
+  const Cardinality c = AtLeast(2);
+  EXPECT_EQ(2, c.ConservativeLowerBound());
+  EXPECT_EQ(INT_MAX, c.ConservativeUpperBound());
+}
+
+// Tests AtMost(n).
+
+TEST(AtMostTest, OnNegativeNumber) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    AtMost(-1);
+  }, "The invocation upper bound must be >= 0");
+}
+
+TEST(AtMostTest, OnZero) {
+  const Cardinality c = AtMost(0);
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(0));
+
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(1));
+
+  stringstream ss;
+  c.DescribeTo(&ss);
+  EXPECT_PRED_FORMAT2(IsSubstring, "never called",
+                      ss.str());
+}
+
+TEST(AtMostTest, OnPositiveNumber) {
+  const Cardinality c = AtMost(2);
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(0));
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(1));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(1));
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(2));
+
+  stringstream ss1;
+  AtMost(1).DescribeTo(&ss1);
+  EXPECT_PRED_FORMAT2(IsSubstring, "called at most once",
+                      ss1.str());
+
+  stringstream ss2;
+  c.DescribeTo(&ss2);
+  EXPECT_PRED_FORMAT2(IsSubstring, "called at most twice",
+                      ss2.str());
+
+  stringstream ss3;
+  AtMost(3).DescribeTo(&ss3);
+  EXPECT_PRED_FORMAT2(IsSubstring, "called at most 3 times",
+                      ss3.str());
+}
+
+TEST(AtMostTest, HasCorrectBounds) {
+  const Cardinality c = AtMost(2);
+  EXPECT_EQ(0, c.ConservativeLowerBound());
+  EXPECT_EQ(2, c.ConservativeUpperBound());
+}
+
+// Tests Between(m, n).
+
+TEST(BetweenTest, OnNegativeStart) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    Between(-1, 2);
+  }, "The invocation lower bound must be >= 0, but is actually -1");
+}
+
+TEST(BetweenTest, OnNegativeEnd) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    Between(1, -2);
+  }, "The invocation upper bound must be >= 0, but is actually -2");
+}
+
+TEST(BetweenTest, OnStartBiggerThanEnd) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    Between(2, 1);
+  }, "The invocation upper bound (1) must be >= "
+     "the invocation lower bound (2)");
+}
+
+TEST(BetweenTest, OnZeroStartAndZeroEnd) {
+  const Cardinality c = Between(0, 0);
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(0));
+
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(1));
+
+  stringstream ss;
+  c.DescribeTo(&ss);
+  EXPECT_PRED_FORMAT2(IsSubstring, "never called",
+                      ss.str());
+}
+
+TEST(BetweenTest, OnZeroStartAndNonZeroEnd) {
+  const Cardinality c = Between(0, 2);
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(0));
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(2));
+
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(4));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(4));
+
+  stringstream ss;
+  c.DescribeTo(&ss);
+  EXPECT_PRED_FORMAT2(IsSubstring, "called at most twice",
+                      ss.str());
+}
+
+TEST(BetweenTest, OnSameStartAndEnd) {
+  const Cardinality c = Between(3, 3);
+
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(2));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(2));
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(3));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(3));
+
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(4));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(4));
+
+  stringstream ss;
+  c.DescribeTo(&ss);
+  EXPECT_PRED_FORMAT2(IsSubstring, "called 3 times",
+                      ss.str());
+}
+
+TEST(BetweenTest, OnDifferentStartAndEnd) {
+  const Cardinality c = Between(3, 5);
+
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(2));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(2));
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(3));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(3));
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(5));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(5));
+
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(6));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(6));
+
+  stringstream ss;
+  c.DescribeTo(&ss);
+  EXPECT_PRED_FORMAT2(IsSubstring, "called between 3 and 5 times",
+                      ss.str());
+}
+
+TEST(BetweenTest, HasCorrectBounds) {
+  const Cardinality c = Between(3, 5);
+  EXPECT_EQ(3, c.ConservativeLowerBound());
+  EXPECT_EQ(5, c.ConservativeUpperBound());
+}
+
+// Tests Exactly(n).
+
+TEST(ExactlyTest, OnNegativeNumber) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    Exactly(-1);
+  }, "The invocation lower bound must be >= 0");
+}
+
+TEST(ExactlyTest, OnZero) {
+  const Cardinality c = Exactly(0);
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(0));
+
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(1));
+
+  stringstream ss;
+  c.DescribeTo(&ss);
+  EXPECT_PRED_FORMAT2(IsSubstring, "never called",
+                      ss.str());
+}
+
+TEST(ExactlyTest, OnPositiveNumber) {
+  const Cardinality c = Exactly(2);
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(0));
+  EXPECT_FALSE(c.IsSaturatedByCallCount(0));
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
+  EXPECT_TRUE(c.IsSaturatedByCallCount(2));
+
+  stringstream ss1;
+  Exactly(1).DescribeTo(&ss1);
+  EXPECT_PRED_FORMAT2(IsSubstring, "called once",
+                      ss1.str());
+
+  stringstream ss2;
+  c.DescribeTo(&ss2);
+  EXPECT_PRED_FORMAT2(IsSubstring, "called twice",
+                      ss2.str());
+
+  stringstream ss3;
+  Exactly(3).DescribeTo(&ss3);
+  EXPECT_PRED_FORMAT2(IsSubstring, "called 3 times",
+                      ss3.str());
+}
+
+TEST(ExactlyTest, HasCorrectBounds) {
+  const Cardinality c = Exactly(3);
+  EXPECT_EQ(3, c.ConservativeLowerBound());
+  EXPECT_EQ(3, c.ConservativeUpperBound());
+}
+
+// Tests that a user can make their own cardinality by implementing
+// CardinalityInterface and calling MakeCardinality().
+
+class EvenCardinality : public CardinalityInterface {
+ public:
+  // Returns true if and only if call_count calls will satisfy this
+  // cardinality.
+  bool IsSatisfiedByCallCount(int call_count) const override {
+    return (call_count % 2 == 0);
+  }
+
+  // Returns true if and only if call_count calls will saturate this
+  // cardinality.
+  bool IsSaturatedByCallCount(int /* call_count */) const override {
+    return false;
+  }
+
+  // Describes self to an ostream.
+  void DescribeTo(::std::ostream* ss) const override {
+    *ss << "called even number of times";
+  }
+};
+
+TEST(MakeCardinalityTest, ConstructsCardinalityFromInterface) {
+  const Cardinality c = MakeCardinality(new EvenCardinality);
+
+  EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
+  EXPECT_FALSE(c.IsSatisfiedByCallCount(3));
+
+  EXPECT_FALSE(c.IsSaturatedByCallCount(10000));
+
+  stringstream ss;
+  c.DescribeTo(&ss);
+  EXPECT_EQ("called even number of times", ss.str());
+}
+
+}  // Unnamed namespace
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-function-mocker_nc.cc b/build/_deps/googletest-src/googlemock/test/gmock-function-mocker_nc.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d38fe85ef035a935ac3a6c37c18fed3b2e7931d9
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-function-mocker_nc.cc
@@ -0,0 +1,16 @@
+#include "gmock/gmock.h"
+
+#include <memory>
+#include <string>
+
+#if defined(TEST_MOCK_METHOD_INVALID_CONST_SPEC)
+
+struct Base {
+  MOCK_METHOD(int, F, (), (onst));
+};
+
+#else
+
+// Sanity check - this should compile.
+
+#endif
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-function-mocker_nc_test.py b/build/_deps/googletest-src/googlemock/test/gmock-function-mocker_nc_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..8ef6e09fa2b9423299664591186934bbfca2b44a
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-function-mocker_nc_test.py
@@ -0,0 +1,43 @@
+"""Negative compilation tests for Google Mock macro MOCK_METHOD."""
+
+import os
+import sys
+
+IS_LINUX = os.name == "posix" and os.uname()[0] == "Linux"
+if not IS_LINUX:
+  sys.stderr.write(
+      "WARNING: Negative compilation tests are not supported on this platform")
+  sys.exit(0)
+
+# Suppresses the 'Import not at the top of the file' lint complaint.
+# pylint: disable-msg=C6204
+from google3.testing.pybase import fake_target_util
+from google3.testing.pybase import googletest
+
+# pylint: enable-msg=C6204
+
+
+class GMockMethodNCTest(googletest.TestCase):
+  """Negative compilation tests for MOCK_METHOD."""
+
+  # The class body is intentionally empty.  The actual test*() methods
+  # will be defined at run time by a call to
+  # DefineNegativeCompilationTests() later.
+  pass
+
+
+# Defines a list of test specs, where each element is a tuple
+# (test name, list of regexes for matching the compiler errors).
+TEST_SPECS = [
+    ("MOCK_METHOD_INVALID_CONST_SPEC",
+     [r"onst cannot be recognized as a valid specification modifier"]),
+]
+
+# Define a test method in GMockNCTest for each element in TEST_SPECS.
+fake_target_util.DefineNegativeCompilationTests(
+    GMockMethodNCTest,
+    "google3/third_party/googletest/googlemock/test/gmock-function-mocker_nc",
+    "gmock-function-mocker_nc.o", TEST_SPECS)
+
+if __name__ == "__main__":
+  googletest.main()
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-function-mocker_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-function-mocker_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..fbc5d5b2bb97257df95fd6419a2525a8ba4aee7a
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-function-mocker_test.cc
@@ -0,0 +1,660 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests the function mocker classes.
+#include "gmock/gmock-generated-function-mockers.h"
+
+#if GTEST_OS_WINDOWS
+// MSDN says the header file to be included for STDMETHOD is BaseTyps.h but
+// we are getting compiler errors if we use basetyps.h, hence including
+// objbase.h for definition of STDMETHOD.
+# include <objbase.h>
+#endif  // GTEST_OS_WINDOWS
+
+#include <map>
+#include <string>
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+namespace testing {
+namespace gmock_function_mocker_test {
+
+using testing::_;
+using testing::A;
+using testing::An;
+using testing::AnyNumber;
+using testing::Const;
+using testing::DoDefault;
+using testing::Eq;
+using testing::Lt;
+using testing::MockFunction;
+using testing::Ref;
+using testing::Return;
+using testing::ReturnRef;
+using testing::TypedEq;
+
+template<typename T>
+class TemplatedCopyable {
+ public:
+  TemplatedCopyable() {}
+
+  template <typename U>
+  TemplatedCopyable(const U& other) {}  // NOLINT
+};
+
+class FooInterface {
+ public:
+  virtual ~FooInterface() {}
+
+  virtual void VoidReturning(int x) = 0;
+
+  virtual int Nullary() = 0;
+  virtual bool Unary(int x) = 0;
+  virtual long Binary(short x, int y) = 0;  // NOLINT
+  virtual int Decimal(bool b, char c, short d, int e, long f,  // NOLINT
+                      float g, double h, unsigned i, char* j,
+                      const std::string& k) = 0;
+
+  virtual bool TakesNonConstReference(int& n) = 0;  // NOLINT
+  virtual std::string TakesConstReference(const int& n) = 0;
+  virtual bool TakesConst(const int x) = 0;
+
+  virtual int OverloadedOnArgumentNumber() = 0;
+  virtual int OverloadedOnArgumentNumber(int n) = 0;
+
+  virtual int OverloadedOnArgumentType(int n) = 0;
+  virtual char OverloadedOnArgumentType(char c) = 0;
+
+  virtual int OverloadedOnConstness() = 0;
+  virtual char OverloadedOnConstness() const = 0;
+
+  virtual int TypeWithHole(int (*func)()) = 0;
+  virtual int TypeWithComma(const std::map<int, std::string>& a_map) = 0;
+  virtual int TypeWithTemplatedCopyCtor(const TemplatedCopyable<int>&) = 0;
+
+#if GTEST_OS_WINDOWS
+  STDMETHOD_(int, CTNullary)() = 0;
+  STDMETHOD_(bool, CTUnary)(int x) = 0;
+  STDMETHOD_(int, CTDecimal)
+  (bool b, char c, short d, int e, long f,  // NOLINT
+   float g, double h, unsigned i, char* j, const std::string& k) = 0;
+  STDMETHOD_(char, CTConst)(int x) const = 0;
+#endif  // GTEST_OS_WINDOWS
+};
+
+// Const qualifiers on arguments were once (incorrectly) considered
+// significant in determining whether two virtual functions had the same
+// signature. This was fixed in Visual Studio 2008. However, the compiler
+// still emits a warning that alerts about this change in behavior.
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable : 4373)
+#endif
+class MockFoo : public FooInterface {
+ public:
+  MockFoo() {}
+
+  // Makes sure that a mock function parameter can be named.
+  MOCK_METHOD(void, VoidReturning, (int n));  // NOLINT
+
+  MOCK_METHOD(int, Nullary, ());  // NOLINT
+
+  // Makes sure that a mock function parameter can be unnamed.
+  MOCK_METHOD(bool, Unary, (int));          // NOLINT
+  MOCK_METHOD(long, Binary, (short, int));  // NOLINT
+  MOCK_METHOD(int, Decimal,
+              (bool, char, short, int, long, float,  // NOLINT
+               double, unsigned, char*, const std::string& str),
+              (override));
+
+  MOCK_METHOD(bool, TakesNonConstReference, (int&));  // NOLINT
+  MOCK_METHOD(std::string, TakesConstReference, (const int&));
+  MOCK_METHOD(bool, TakesConst, (const int));  // NOLINT
+
+  // Tests that the function return type can contain unprotected comma.
+  MOCK_METHOD((std::map<int, std::string>), ReturnTypeWithComma, (), ());
+  MOCK_METHOD((std::map<int, std::string>), ReturnTypeWithComma, (int),
+              (const));  // NOLINT
+
+  MOCK_METHOD(int, OverloadedOnArgumentNumber, ());     // NOLINT
+  MOCK_METHOD(int, OverloadedOnArgumentNumber, (int));  // NOLINT
+
+  MOCK_METHOD(int, OverloadedOnArgumentType, (int));    // NOLINT
+  MOCK_METHOD(char, OverloadedOnArgumentType, (char));  // NOLINT
+
+  MOCK_METHOD(int, OverloadedOnConstness, (), (override));          // NOLINT
+  MOCK_METHOD(char, OverloadedOnConstness, (), (override, const));  // NOLINT
+
+  MOCK_METHOD(int, TypeWithHole, (int (*)()), ());  // NOLINT
+  MOCK_METHOD(int, TypeWithComma, ((const std::map<int, std::string>&)));
+  MOCK_METHOD(int, TypeWithTemplatedCopyCtor,
+              (const TemplatedCopyable<int>&));  // NOLINT
+
+#if GTEST_OS_WINDOWS
+  MOCK_METHOD(int, CTNullary, (), (Calltype(STDMETHODCALLTYPE)));
+  MOCK_METHOD(bool, CTUnary, (int), (Calltype(STDMETHODCALLTYPE)));
+  MOCK_METHOD(int, CTDecimal,
+              (bool b, char c, short d, int e, long f, float g, double h,
+               unsigned i, char* j, const std::string& k),
+              (Calltype(STDMETHODCALLTYPE)));
+  MOCK_METHOD(char, CTConst, (int), (const, Calltype(STDMETHODCALLTYPE)));
+  MOCK_METHOD((std::map<int, std::string>), CTReturnTypeWithComma, (),
+              (Calltype(STDMETHODCALLTYPE)));
+#endif  // GTEST_OS_WINDOWS
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFoo);
+};
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+class MockMethodFunctionMockerTest : public testing::Test {
+ protected:
+  MockMethodFunctionMockerTest() : foo_(&mock_foo_) {}
+
+  FooInterface* const foo_;
+  MockFoo mock_foo_;
+};
+
+// Tests mocking a void-returning function.
+TEST_F(MockMethodFunctionMockerTest, MocksVoidFunction) {
+  EXPECT_CALL(mock_foo_, VoidReturning(Lt(100)));
+  foo_->VoidReturning(0);
+}
+
+// Tests mocking a nullary function.
+TEST_F(MockMethodFunctionMockerTest, MocksNullaryFunction) {
+  EXPECT_CALL(mock_foo_, Nullary())
+      .WillOnce(DoDefault())
+      .WillOnce(Return(1));
+
+  EXPECT_EQ(0, foo_->Nullary());
+  EXPECT_EQ(1, foo_->Nullary());
+}
+
+// Tests mocking a unary function.
+TEST_F(MockMethodFunctionMockerTest, MocksUnaryFunction) {
+  EXPECT_CALL(mock_foo_, Unary(Eq(2)))
+      .Times(2)
+      .WillOnce(Return(true));
+
+  EXPECT_TRUE(foo_->Unary(2));
+  EXPECT_FALSE(foo_->Unary(2));
+}
+
+// Tests mocking a binary function.
+TEST_F(MockMethodFunctionMockerTest, MocksBinaryFunction) {
+  EXPECT_CALL(mock_foo_, Binary(2, _))
+      .WillOnce(Return(3));
+
+  EXPECT_EQ(3, foo_->Binary(2, 1));
+}
+
+// Tests mocking a decimal function.
+TEST_F(MockMethodFunctionMockerTest, MocksDecimalFunction) {
+  EXPECT_CALL(mock_foo_, Decimal(true, 'a', 0, 0, 1L, A<float>(),
+                                 Lt(100), 5U, NULL, "hi"))
+      .WillOnce(Return(5));
+
+  EXPECT_EQ(5, foo_->Decimal(true, 'a', 0, 0, 1, 0, 0, 5, nullptr, "hi"));
+}
+
+// Tests mocking a function that takes a non-const reference.
+TEST_F(MockMethodFunctionMockerTest,
+       MocksFunctionWithNonConstReferenceArgument) {
+  int a = 0;
+  EXPECT_CALL(mock_foo_, TakesNonConstReference(Ref(a)))
+      .WillOnce(Return(true));
+
+  EXPECT_TRUE(foo_->TakesNonConstReference(a));
+}
+
+// Tests mocking a function that takes a const reference.
+TEST_F(MockMethodFunctionMockerTest, MocksFunctionWithConstReferenceArgument) {
+  int a = 0;
+  EXPECT_CALL(mock_foo_, TakesConstReference(Ref(a)))
+      .WillOnce(Return("Hello"));
+
+  EXPECT_EQ("Hello", foo_->TakesConstReference(a));
+}
+
+// Tests mocking a function that takes a const variable.
+TEST_F(MockMethodFunctionMockerTest, MocksFunctionWithConstArgument) {
+  EXPECT_CALL(mock_foo_, TakesConst(Lt(10)))
+      .WillOnce(DoDefault());
+
+  EXPECT_FALSE(foo_->TakesConst(5));
+}
+
+// Tests mocking functions overloaded on the number of arguments.
+TEST_F(MockMethodFunctionMockerTest, MocksFunctionsOverloadedOnArgumentNumber) {
+  EXPECT_CALL(mock_foo_, OverloadedOnArgumentNumber())
+      .WillOnce(Return(1));
+  EXPECT_CALL(mock_foo_, OverloadedOnArgumentNumber(_))
+      .WillOnce(Return(2));
+
+  EXPECT_EQ(2, foo_->OverloadedOnArgumentNumber(1));
+  EXPECT_EQ(1, foo_->OverloadedOnArgumentNumber());
+}
+
+// Tests mocking functions overloaded on the types of argument.
+TEST_F(MockMethodFunctionMockerTest, MocksFunctionsOverloadedOnArgumentType) {
+  EXPECT_CALL(mock_foo_, OverloadedOnArgumentType(An<int>()))
+      .WillOnce(Return(1));
+  EXPECT_CALL(mock_foo_, OverloadedOnArgumentType(TypedEq<char>('a')))
+      .WillOnce(Return('b'));
+
+  EXPECT_EQ(1, foo_->OverloadedOnArgumentType(0));
+  EXPECT_EQ('b', foo_->OverloadedOnArgumentType('a'));
+}
+
+// Tests mocking functions overloaded on the const-ness of this object.
+TEST_F(MockMethodFunctionMockerTest,
+       MocksFunctionsOverloadedOnConstnessOfThis) {
+  EXPECT_CALL(mock_foo_, OverloadedOnConstness());
+  EXPECT_CALL(Const(mock_foo_), OverloadedOnConstness())
+      .WillOnce(Return('a'));
+
+  EXPECT_EQ(0, foo_->OverloadedOnConstness());
+  EXPECT_EQ('a', Const(*foo_).OverloadedOnConstness());
+}
+
+TEST_F(MockMethodFunctionMockerTest, MocksReturnTypeWithComma) {
+  const std::map<int, std::string> a_map;
+  EXPECT_CALL(mock_foo_, ReturnTypeWithComma())
+      .WillOnce(Return(a_map));
+  EXPECT_CALL(mock_foo_, ReturnTypeWithComma(42))
+      .WillOnce(Return(a_map));
+
+  EXPECT_EQ(a_map, mock_foo_.ReturnTypeWithComma());
+  EXPECT_EQ(a_map, mock_foo_.ReturnTypeWithComma(42));
+}
+
+TEST_F(MockMethodFunctionMockerTest, MocksTypeWithTemplatedCopyCtor) {
+  EXPECT_CALL(mock_foo_, TypeWithTemplatedCopyCtor(_)).WillOnce(Return(true));
+  EXPECT_TRUE(foo_->TypeWithTemplatedCopyCtor(TemplatedCopyable<int>()));
+}
+
+#if GTEST_OS_WINDOWS
+// Tests mocking a nullary function with calltype.
+TEST_F(MockMethodFunctionMockerTest, MocksNullaryFunctionWithCallType) {
+  EXPECT_CALL(mock_foo_, CTNullary())
+      .WillOnce(Return(-1))
+      .WillOnce(Return(0));
+
+  EXPECT_EQ(-1, foo_->CTNullary());
+  EXPECT_EQ(0, foo_->CTNullary());
+}
+
+// Tests mocking a unary function with calltype.
+TEST_F(MockMethodFunctionMockerTest, MocksUnaryFunctionWithCallType) {
+  EXPECT_CALL(mock_foo_, CTUnary(Eq(2)))
+      .Times(2)
+      .WillOnce(Return(true))
+      .WillOnce(Return(false));
+
+  EXPECT_TRUE(foo_->CTUnary(2));
+  EXPECT_FALSE(foo_->CTUnary(2));
+}
+
+// Tests mocking a decimal function with calltype.
+TEST_F(MockMethodFunctionMockerTest, MocksDecimalFunctionWithCallType) {
+  EXPECT_CALL(mock_foo_, CTDecimal(true, 'a', 0, 0, 1L, A<float>(),
+                                   Lt(100), 5U, NULL, "hi"))
+      .WillOnce(Return(10));
+
+  EXPECT_EQ(10, foo_->CTDecimal(true, 'a', 0, 0, 1, 0, 0, 5, NULL, "hi"));
+}
+
+// Tests mocking functions overloaded on the const-ness of this object.
+TEST_F(MockMethodFunctionMockerTest, MocksFunctionsConstFunctionWithCallType) {
+  EXPECT_CALL(Const(mock_foo_), CTConst(_))
+      .WillOnce(Return('a'));
+
+  EXPECT_EQ('a', Const(*foo_).CTConst(0));
+}
+
+TEST_F(MockMethodFunctionMockerTest, MocksReturnTypeWithCommaAndCallType) {
+  const std::map<int, std::string> a_map;
+  EXPECT_CALL(mock_foo_, CTReturnTypeWithComma())
+      .WillOnce(Return(a_map));
+
+  EXPECT_EQ(a_map, mock_foo_.CTReturnTypeWithComma());
+}
+
+#endif  // GTEST_OS_WINDOWS
+
+class MockB {
+ public:
+  MockB() {}
+
+  MOCK_METHOD(void, DoB, ());
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockB);
+};
+
+// Tests that functions with no EXPECT_CALL() rules can be called any
+// number of times.
+TEST(MockMethodExpectCallTest, UnmentionedFunctionCanBeCalledAnyNumberOfTimes) {
+  {
+    MockB b;
+  }
+
+  {
+    MockB b;
+    b.DoB();
+  }
+
+  {
+    MockB b;
+    b.DoB();
+    b.DoB();
+  }
+}
+
+// Tests mocking template interfaces.
+
+template <typename T>
+class StackInterface {
+ public:
+  virtual ~StackInterface() {}
+
+  // Template parameter appears in function parameter.
+  virtual void Push(const T& value) = 0;
+  virtual void Pop() = 0;
+  virtual int GetSize() const = 0;
+  // Template parameter appears in function return type.
+  virtual const T& GetTop() const = 0;
+};
+
+template <typename T>
+class MockStack : public StackInterface<T> {
+ public:
+  MockStack() {}
+
+  MOCK_METHOD(void, Push, (const T& elem), ());
+  MOCK_METHOD(void, Pop, (), (final));
+  MOCK_METHOD(int, GetSize, (), (const, override));
+  MOCK_METHOD(const T&, GetTop, (), (const));
+
+  // Tests that the function return type can contain unprotected comma.
+  MOCK_METHOD((std::map<int, int>), ReturnTypeWithComma, (), ());
+  MOCK_METHOD((std::map<int, int>), ReturnTypeWithComma, (int), (const));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockStack);
+};
+
+// Tests that template mock works.
+TEST(MockMethodTemplateMockTest, Works) {
+  MockStack<int> mock;
+
+  EXPECT_CALL(mock, GetSize())
+      .WillOnce(Return(0))
+      .WillOnce(Return(1))
+      .WillOnce(Return(0));
+  EXPECT_CALL(mock, Push(_));
+  int n = 5;
+  EXPECT_CALL(mock, GetTop())
+      .WillOnce(ReturnRef(n));
+  EXPECT_CALL(mock, Pop())
+      .Times(AnyNumber());
+
+  EXPECT_EQ(0, mock.GetSize());
+  mock.Push(5);
+  EXPECT_EQ(1, mock.GetSize());
+  EXPECT_EQ(5, mock.GetTop());
+  mock.Pop();
+  EXPECT_EQ(0, mock.GetSize());
+}
+
+TEST(MockMethodTemplateMockTest, MethodWithCommaInReturnTypeWorks) {
+  MockStack<int> mock;
+
+  const std::map<int, int> a_map;
+  EXPECT_CALL(mock, ReturnTypeWithComma())
+      .WillOnce(Return(a_map));
+  EXPECT_CALL(mock, ReturnTypeWithComma(1))
+      .WillOnce(Return(a_map));
+
+  EXPECT_EQ(a_map, mock.ReturnTypeWithComma());
+  EXPECT_EQ(a_map, mock.ReturnTypeWithComma(1));
+}
+
+#if GTEST_OS_WINDOWS
+// Tests mocking template interfaces with calltype.
+
+template <typename T>
+class StackInterfaceWithCallType {
+ public:
+  virtual ~StackInterfaceWithCallType() {}
+
+  // Template parameter appears in function parameter.
+  STDMETHOD_(void, Push)(const T& value) = 0;
+  STDMETHOD_(void, Pop)() = 0;
+  STDMETHOD_(int, GetSize)() const = 0;
+  // Template parameter appears in function return type.
+  STDMETHOD_(const T&, GetTop)() const = 0;
+};
+
+template <typename T>
+class MockStackWithCallType : public StackInterfaceWithCallType<T> {
+ public:
+  MockStackWithCallType() {}
+
+  MOCK_METHOD(void, Push, (const T& elem),
+              (Calltype(STDMETHODCALLTYPE), override));
+  MOCK_METHOD(void, Pop, (), (Calltype(STDMETHODCALLTYPE), override));
+  MOCK_METHOD(int, GetSize, (), (Calltype(STDMETHODCALLTYPE), override, const));
+  MOCK_METHOD(const T&, GetTop, (),
+              (Calltype(STDMETHODCALLTYPE), override, const));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockStackWithCallType);
+};
+
+// Tests that template mock with calltype works.
+TEST(MockMethodTemplateMockTestWithCallType, Works) {
+  MockStackWithCallType<int> mock;
+
+  EXPECT_CALL(mock, GetSize())
+      .WillOnce(Return(0))
+      .WillOnce(Return(1))
+      .WillOnce(Return(0));
+  EXPECT_CALL(mock, Push(_));
+  int n = 5;
+  EXPECT_CALL(mock, GetTop())
+      .WillOnce(ReturnRef(n));
+  EXPECT_CALL(mock, Pop())
+      .Times(AnyNumber());
+
+  EXPECT_EQ(0, mock.GetSize());
+  mock.Push(5);
+  EXPECT_EQ(1, mock.GetSize());
+  EXPECT_EQ(5, mock.GetTop());
+  mock.Pop();
+  EXPECT_EQ(0, mock.GetSize());
+}
+#endif  // GTEST_OS_WINDOWS
+
+#define MY_MOCK_METHODS1_                       \
+  MOCK_METHOD(void, Overloaded, ());            \
+  MOCK_METHOD(int, Overloaded, (int), (const)); \
+  MOCK_METHOD(bool, Overloaded, (bool f, int n))
+
+class MockOverloadedOnArgNumber {
+ public:
+  MockOverloadedOnArgNumber() {}
+
+  MY_MOCK_METHODS1_;
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockOverloadedOnArgNumber);
+};
+
+TEST(MockMethodOverloadedMockMethodTest, CanOverloadOnArgNumberInMacroBody) {
+  MockOverloadedOnArgNumber mock;
+  EXPECT_CALL(mock, Overloaded());
+  EXPECT_CALL(mock, Overloaded(1)).WillOnce(Return(2));
+  EXPECT_CALL(mock, Overloaded(true, 1)).WillOnce(Return(true));
+
+  mock.Overloaded();
+  EXPECT_EQ(2, mock.Overloaded(1));
+  EXPECT_TRUE(mock.Overloaded(true, 1));
+}
+
+#define MY_MOCK_METHODS2_ \
+    MOCK_CONST_METHOD1(Overloaded, int(int n)); \
+    MOCK_METHOD1(Overloaded, int(int n))
+
+class MockOverloadedOnConstness {
+ public:
+  MockOverloadedOnConstness() {}
+
+  MY_MOCK_METHODS2_;
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockOverloadedOnConstness);
+};
+
+TEST(MockMethodOverloadedMockMethodTest, CanOverloadOnConstnessInMacroBody) {
+  MockOverloadedOnConstness mock;
+  const MockOverloadedOnConstness* const_mock = &mock;
+  EXPECT_CALL(mock, Overloaded(1)).WillOnce(Return(2));
+  EXPECT_CALL(*const_mock, Overloaded(1)).WillOnce(Return(3));
+
+  EXPECT_EQ(2, mock.Overloaded(1));
+  EXPECT_EQ(3, const_mock->Overloaded(1));
+}
+
+TEST(MockMethodMockFunctionTest, WorksForVoidNullary) {
+  MockFunction<void()> foo;
+  EXPECT_CALL(foo, Call());
+  foo.Call();
+}
+
+TEST(MockMethodMockFunctionTest, WorksForNonVoidNullary) {
+  MockFunction<int()> foo;
+  EXPECT_CALL(foo, Call())
+      .WillOnce(Return(1))
+      .WillOnce(Return(2));
+  EXPECT_EQ(1, foo.Call());
+  EXPECT_EQ(2, foo.Call());
+}
+
+TEST(MockMethodMockFunctionTest, WorksForVoidUnary) {
+  MockFunction<void(int)> foo;
+  EXPECT_CALL(foo, Call(1));
+  foo.Call(1);
+}
+
+TEST(MockMethodMockFunctionTest, WorksForNonVoidBinary) {
+  MockFunction<int(bool, int)> foo;
+  EXPECT_CALL(foo, Call(false, 42))
+      .WillOnce(Return(1))
+      .WillOnce(Return(2));
+  EXPECT_CALL(foo, Call(true, Ge(100)))
+      .WillOnce(Return(3));
+  EXPECT_EQ(1, foo.Call(false, 42));
+  EXPECT_EQ(2, foo.Call(false, 42));
+  EXPECT_EQ(3, foo.Call(true, 120));
+}
+
+TEST(MockMethodMockFunctionTest, WorksFor10Arguments) {
+  MockFunction<int(bool a0, char a1, int a2, int a3, int a4,
+                   int a5, int a6, char a7, int a8, bool a9)> foo;
+  EXPECT_CALL(foo, Call(_, 'a', _, _, _, _, _, _, _, _))
+      .WillOnce(Return(1))
+      .WillOnce(Return(2));
+  EXPECT_EQ(1, foo.Call(false, 'a', 0, 0, 0, 0, 0, 'b', 0, true));
+  EXPECT_EQ(2, foo.Call(true, 'a', 0, 0, 0, 0, 0, 'b', 1, false));
+}
+
+TEST(MockMethodMockFunctionTest, AsStdFunction) {
+  MockFunction<int(int)> foo;
+  auto call = [](const std::function<int(int)> &f, int i) {
+    return f(i);
+  };
+  EXPECT_CALL(foo, Call(1)).WillOnce(Return(-1));
+  EXPECT_CALL(foo, Call(2)).WillOnce(Return(-2));
+  EXPECT_EQ(-1, call(foo.AsStdFunction(), 1));
+  EXPECT_EQ(-2, call(foo.AsStdFunction(), 2));
+}
+
+TEST(MockMethodMockFunctionTest, AsStdFunctionReturnsReference) {
+  MockFunction<int&()> foo;
+  int value = 1;
+  EXPECT_CALL(foo, Call()).WillOnce(ReturnRef(value));
+  int& ref = foo.AsStdFunction()();
+  EXPECT_EQ(1, ref);
+  value = 2;
+  EXPECT_EQ(2, ref);
+}
+
+TEST(MockMethodMockFunctionTest, AsStdFunctionWithReferenceParameter) {
+  MockFunction<int(int &)> foo;
+  auto call = [](const std::function<int(int& )> &f, int &i) {
+    return f(i);
+  };
+  int i = 42;
+  EXPECT_CALL(foo, Call(i)).WillOnce(Return(-1));
+  EXPECT_EQ(-1, call(foo.AsStdFunction(), i));
+}
+
+
+struct MockMethodSizes0 {
+  MOCK_METHOD(void, func, ());
+};
+struct MockMethodSizes1 {
+  MOCK_METHOD(void, func, (int));
+};
+struct MockMethodSizes2 {
+  MOCK_METHOD(void, func, (int, int));
+};
+struct MockMethodSizes3 {
+  MOCK_METHOD(void, func, (int, int, int));
+};
+struct MockMethodSizes4 {
+  MOCK_METHOD(void, func, (int, int, int, int));
+};
+
+TEST(MockMethodMockFunctionTest, MockMethodSizeOverhead) {
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes1));
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes2));
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes3));
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes4));
+}
+
+}  // namespace gmock_function_mocker_test
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-generated-actions_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-generated-actions_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4c649a7ee96aa677b48edaa4ce6473db0f27931d
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-generated-actions_test.cc
@@ -0,0 +1,1064 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests the built-in actions generated by a script.
+
+#include "gmock/gmock-generated-actions.h"
+
+#include <functional>
+#include <memory>
+#include <sstream>
+#include <string>
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+namespace testing {
+namespace gmock_generated_actions_test {
+
+using ::std::plus;
+using ::std::string;
+using testing::_;
+using testing::Action;
+using testing::ActionInterface;
+using testing::ByRef;
+using testing::DoAll;
+using testing::Invoke;
+using testing::Return;
+using testing::ReturnNew;
+using testing::SetArgPointee;
+using testing::StaticAssertTypeEq;
+using testing::Unused;
+
+// For suppressing compiler warnings on conversion possibly losing precision.
+inline short Short(short n) { return n; }  // NOLINT
+inline char Char(char ch) { return ch; }
+
+// Sample functions and functors for testing various actions.
+int Nullary() { return 1; }
+
+bool g_done = false;
+
+bool ByConstRef(const std::string& s) { return s == "Hi"; }
+
+const double g_double = 0;
+bool ReferencesGlobalDouble(const double& x) { return &x == &g_double; }
+
+struct UnaryFunctor {
+  int operator()(bool x) { return x ? 1 : -1; }
+};
+
+const char* Binary(const char* input, short n) { return input + n; }  // NOLINT
+
+int SumOf5(int a, int b, int c, int d, int e) { return a + b + c + d + e; }
+
+struct SumOf5Functor {
+  int operator()(int a, int b, int c, int d, int e) {
+    return a + b + c + d + e;
+  }
+};
+
+std::string Concat5(const char* s1, const char* s2, const char* s3,
+                    const char* s4, const char* s5) {
+  return std::string(s1) + s2 + s3 + s4 + s5;
+}
+
+int SumOf6(int a, int b, int c, int d, int e, int f) {
+  return a + b + c + d + e + f;
+}
+
+struct SumOf6Functor {
+  int operator()(int a, int b, int c, int d, int e, int f) {
+    return a + b + c + d + e + f;
+  }
+};
+
+std::string Concat6(const char* s1, const char* s2, const char* s3,
+                    const char* s4, const char* s5, const char* s6) {
+  return std::string(s1) + s2 + s3 + s4 + s5 + s6;
+}
+
+std::string Concat7(const char* s1, const char* s2, const char* s3,
+                    const char* s4, const char* s5, const char* s6,
+                    const char* s7) {
+  return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7;
+}
+
+std::string Concat8(const char* s1, const char* s2, const char* s3,
+                    const char* s4, const char* s5, const char* s6,
+                    const char* s7, const char* s8) {
+  return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8;
+}
+
+std::string Concat9(const char* s1, const char* s2, const char* s3,
+                    const char* s4, const char* s5, const char* s6,
+                    const char* s7, const char* s8, const char* s9) {
+  return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8 + s9;
+}
+
+std::string Concat10(const char* s1, const char* s2, const char* s3,
+                     const char* s4, const char* s5, const char* s6,
+                     const char* s7, const char* s8, const char* s9,
+                     const char* s10) {
+  return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8 + s9 + s10;
+}
+
+// A helper that turns the type of a C-string literal from const
+// char[N] to const char*.
+inline const char* CharPtr(const char* s) { return s; }
+
+// Tests InvokeArgument<N>(...).
+
+// Tests using InvokeArgument with a nullary function.
+TEST(InvokeArgumentTest, Function0) {
+  Action<int(int, int(*)())> a = InvokeArgument<1>();  // NOLINT
+  EXPECT_EQ(1, a.Perform(std::make_tuple(2, &Nullary)));
+}
+
+// Tests using InvokeArgument with a unary function.
+TEST(InvokeArgumentTest, Functor1) {
+  Action<int(UnaryFunctor)> a = InvokeArgument<0>(true);  // NOLINT
+  EXPECT_EQ(1, a.Perform(std::make_tuple(UnaryFunctor())));
+}
+
+// Tests using InvokeArgument with a 5-ary function.
+TEST(InvokeArgumentTest, Function5) {
+  Action<int(int(*)(int, int, int, int, int))> a =  // NOLINT
+      InvokeArgument<0>(10000, 2000, 300, 40, 5);
+  EXPECT_EQ(12345, a.Perform(std::make_tuple(&SumOf5)));
+}
+
+// Tests using InvokeArgument with a 5-ary functor.
+TEST(InvokeArgumentTest, Functor5) {
+  Action<int(SumOf5Functor)> a =  // NOLINT
+      InvokeArgument<0>(10000, 2000, 300, 40, 5);
+  EXPECT_EQ(12345, a.Perform(std::make_tuple(SumOf5Functor())));
+}
+
+// Tests using InvokeArgument with a 6-ary function.
+TEST(InvokeArgumentTest, Function6) {
+  Action<int(int(*)(int, int, int, int, int, int))> a =  // NOLINT
+      InvokeArgument<0>(100000, 20000, 3000, 400, 50, 6);
+  EXPECT_EQ(123456, a.Perform(std::make_tuple(&SumOf6)));
+}
+
+// Tests using InvokeArgument with a 6-ary functor.
+TEST(InvokeArgumentTest, Functor6) {
+  Action<int(SumOf6Functor)> a =  // NOLINT
+      InvokeArgument<0>(100000, 20000, 3000, 400, 50, 6);
+  EXPECT_EQ(123456, a.Perform(std::make_tuple(SumOf6Functor())));
+}
+
+// Tests using InvokeArgument with a 7-ary function.
+TEST(InvokeArgumentTest, Function7) {
+  Action<std::string(std::string(*)(const char*, const char*, const char*,
+                                    const char*, const char*, const char*,
+                                    const char*))>
+      a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7");
+  EXPECT_EQ("1234567", a.Perform(std::make_tuple(&Concat7)));
+}
+
+// Tests using InvokeArgument with a 8-ary function.
+TEST(InvokeArgumentTest, Function8) {
+  Action<std::string(std::string(*)(const char*, const char*, const char*,
+                                    const char*, const char*, const char*,
+                                    const char*, const char*))>
+      a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7", "8");
+  EXPECT_EQ("12345678", a.Perform(std::make_tuple(&Concat8)));
+}
+
+// Tests using InvokeArgument with a 9-ary function.
+TEST(InvokeArgumentTest, Function9) {
+  Action<std::string(std::string(*)(const char*, const char*, const char*,
+                                    const char*, const char*, const char*,
+                                    const char*, const char*, const char*))>
+      a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7", "8", "9");
+  EXPECT_EQ("123456789", a.Perform(std::make_tuple(&Concat9)));
+}
+
+// Tests using InvokeArgument with a 10-ary function.
+TEST(InvokeArgumentTest, Function10) {
+  Action<std::string(std::string(*)(
+      const char*, const char*, const char*, const char*, const char*,
+      const char*, const char*, const char*, const char*, const char*))>
+      a = InvokeArgument<0>("1", "2", "3", "4", "5", "6", "7", "8", "9", "0");
+  EXPECT_EQ("1234567890", a.Perform(std::make_tuple(&Concat10)));
+}
+
+// Tests using InvokeArgument with a function that takes a pointer argument.
+TEST(InvokeArgumentTest, ByPointerFunction) {
+  Action<const char*(const char*(*)(const char* input, short n))> a =  // NOLINT
+      InvokeArgument<0>(static_cast<const char*>("Hi"), Short(1));
+  EXPECT_STREQ("i", a.Perform(std::make_tuple(&Binary)));
+}
+
+// Tests using InvokeArgument with a function that takes a const char*
+// by passing it a C-string literal.
+TEST(InvokeArgumentTest, FunctionWithCStringLiteral) {
+  Action<const char*(const char*(*)(const char* input, short n))> a =  // NOLINT
+      InvokeArgument<0>("Hi", Short(1));
+  EXPECT_STREQ("i", a.Perform(std::make_tuple(&Binary)));
+}
+
+// Tests using InvokeArgument with a function that takes a const reference.
+TEST(InvokeArgumentTest, ByConstReferenceFunction) {
+  Action<bool(bool (*function)(const std::string& s))> a =  // NOLINT
+      InvokeArgument<0>(std::string("Hi"));
+  // When action 'a' is constructed, it makes a copy of the temporary
+  // string object passed to it, so it's OK to use 'a' later, when the
+  // temporary object has already died.
+  EXPECT_TRUE(a.Perform(std::make_tuple(&ByConstRef)));
+}
+
+// Tests using InvokeArgument with ByRef() and a function that takes a
+// const reference.
+TEST(InvokeArgumentTest, ByExplicitConstReferenceFunction) {
+  Action<bool(bool(*)(const double& x))> a =  // NOLINT
+      InvokeArgument<0>(ByRef(g_double));
+  // The above line calls ByRef() on a const value.
+  EXPECT_TRUE(a.Perform(std::make_tuple(&ReferencesGlobalDouble)));
+
+  double x = 0;
+  a = InvokeArgument<0>(ByRef(x));  // This calls ByRef() on a non-const.
+  EXPECT_FALSE(a.Perform(std::make_tuple(&ReferencesGlobalDouble)));
+}
+
+// Tests DoAll(a1, a2).
+TEST(DoAllTest, TwoActions) {
+  int n = 0;
+  Action<int(int*)> a = DoAll(SetArgPointee<0>(1),  // NOLINT
+                              Return(2));
+  EXPECT_EQ(2, a.Perform(std::make_tuple(&n)));
+  EXPECT_EQ(1, n);
+}
+
+// Tests DoAll(a1, a2, a3).
+TEST(DoAllTest, ThreeActions) {
+  int m = 0, n = 0;
+  Action<int(int*, int*)> a = DoAll(SetArgPointee<0>(1),  // NOLINT
+                                    SetArgPointee<1>(2),
+                                    Return(3));
+  EXPECT_EQ(3, a.Perform(std::make_tuple(&m, &n)));
+  EXPECT_EQ(1, m);
+  EXPECT_EQ(2, n);
+}
+
+// Tests DoAll(a1, a2, a3, a4).
+TEST(DoAllTest, FourActions) {
+  int m = 0, n = 0;
+  char ch = '\0';
+  Action<int(int*, int*, char*)> a =  // NOLINT
+      DoAll(SetArgPointee<0>(1),
+            SetArgPointee<1>(2),
+            SetArgPointee<2>('a'),
+            Return(3));
+  EXPECT_EQ(3, a.Perform(std::make_tuple(&m, &n, &ch)));
+  EXPECT_EQ(1, m);
+  EXPECT_EQ(2, n);
+  EXPECT_EQ('a', ch);
+}
+
+// Tests DoAll(a1, a2, a3, a4, a5).
+TEST(DoAllTest, FiveActions) {
+  int m = 0, n = 0;
+  char a = '\0', b = '\0';
+  Action<int(int*, int*, char*, char*)> action =  // NOLINT
+      DoAll(SetArgPointee<0>(1),
+            SetArgPointee<1>(2),
+            SetArgPointee<2>('a'),
+            SetArgPointee<3>('b'),
+            Return(3));
+  EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b)));
+  EXPECT_EQ(1, m);
+  EXPECT_EQ(2, n);
+  EXPECT_EQ('a', a);
+  EXPECT_EQ('b', b);
+}
+
+// Tests DoAll(a1, a2, ..., a6).
+TEST(DoAllTest, SixActions) {
+  int m = 0, n = 0;
+  char a = '\0', b = '\0', c = '\0';
+  Action<int(int*, int*, char*, char*, char*)> action =  // NOLINT
+      DoAll(SetArgPointee<0>(1),
+            SetArgPointee<1>(2),
+            SetArgPointee<2>('a'),
+            SetArgPointee<3>('b'),
+            SetArgPointee<4>('c'),
+            Return(3));
+  EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c)));
+  EXPECT_EQ(1, m);
+  EXPECT_EQ(2, n);
+  EXPECT_EQ('a', a);
+  EXPECT_EQ('b', b);
+  EXPECT_EQ('c', c);
+}
+
+// Tests DoAll(a1, a2, ..., a7).
+TEST(DoAllTest, SevenActions) {
+  int m = 0, n = 0;
+  char a = '\0', b = '\0', c = '\0', d = '\0';
+  Action<int(int*, int*, char*, char*, char*, char*)> action =  // NOLINT
+      DoAll(SetArgPointee<0>(1),
+            SetArgPointee<1>(2),
+            SetArgPointee<2>('a'),
+            SetArgPointee<3>('b'),
+            SetArgPointee<4>('c'),
+            SetArgPointee<5>('d'),
+            Return(3));
+  EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c, &d)));
+  EXPECT_EQ(1, m);
+  EXPECT_EQ(2, n);
+  EXPECT_EQ('a', a);
+  EXPECT_EQ('b', b);
+  EXPECT_EQ('c', c);
+  EXPECT_EQ('d', d);
+}
+
+// Tests DoAll(a1, a2, ..., a8).
+TEST(DoAllTest, EightActions) {
+  int m = 0, n = 0;
+  char a = '\0', b = '\0', c = '\0', d = '\0', e = '\0';
+  Action<int(int*, int*, char*, char*, char*, char*,  // NOLINT
+             char*)> action =
+      DoAll(SetArgPointee<0>(1),
+            SetArgPointee<1>(2),
+            SetArgPointee<2>('a'),
+            SetArgPointee<3>('b'),
+            SetArgPointee<4>('c'),
+            SetArgPointee<5>('d'),
+            SetArgPointee<6>('e'),
+            Return(3));
+  EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c, &d, &e)));
+  EXPECT_EQ(1, m);
+  EXPECT_EQ(2, n);
+  EXPECT_EQ('a', a);
+  EXPECT_EQ('b', b);
+  EXPECT_EQ('c', c);
+  EXPECT_EQ('d', d);
+  EXPECT_EQ('e', e);
+}
+
+// Tests DoAll(a1, a2, ..., a9).
+TEST(DoAllTest, NineActions) {
+  int m = 0, n = 0;
+  char a = '\0', b = '\0', c = '\0', d = '\0', e = '\0', f = '\0';
+  Action<int(int*, int*, char*, char*, char*, char*,  // NOLINT
+             char*, char*)> action =
+      DoAll(SetArgPointee<0>(1),
+            SetArgPointee<1>(2),
+            SetArgPointee<2>('a'),
+            SetArgPointee<3>('b'),
+            SetArgPointee<4>('c'),
+            SetArgPointee<5>('d'),
+            SetArgPointee<6>('e'),
+            SetArgPointee<7>('f'),
+            Return(3));
+  EXPECT_EQ(3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c, &d, &e, &f)));
+  EXPECT_EQ(1, m);
+  EXPECT_EQ(2, n);
+  EXPECT_EQ('a', a);
+  EXPECT_EQ('b', b);
+  EXPECT_EQ('c', c);
+  EXPECT_EQ('d', d);
+  EXPECT_EQ('e', e);
+  EXPECT_EQ('f', f);
+}
+
+// Tests DoAll(a1, a2, ..., a10).
+TEST(DoAllTest, TenActions) {
+  int m = 0, n = 0;
+  char a = '\0', b = '\0', c = '\0', d = '\0';
+  char e = '\0', f = '\0', g = '\0';
+  Action<int(int*, int*, char*, char*, char*, char*,  // NOLINT
+             char*, char*, char*)> action =
+      DoAll(SetArgPointee<0>(1),
+            SetArgPointee<1>(2),
+            SetArgPointee<2>('a'),
+            SetArgPointee<3>('b'),
+            SetArgPointee<4>('c'),
+            SetArgPointee<5>('d'),
+            SetArgPointee<6>('e'),
+            SetArgPointee<7>('f'),
+            SetArgPointee<8>('g'),
+            Return(3));
+  EXPECT_EQ(
+      3, action.Perform(std::make_tuple(&m, &n, &a, &b, &c, &d, &e, &f, &g)));
+  EXPECT_EQ(1, m);
+  EXPECT_EQ(2, n);
+  EXPECT_EQ('a', a);
+  EXPECT_EQ('b', b);
+  EXPECT_EQ('c', c);
+  EXPECT_EQ('d', d);
+  EXPECT_EQ('e', e);
+  EXPECT_EQ('f', f);
+  EXPECT_EQ('g', g);
+}
+
+// The ACTION*() macros trigger warning C4100 (unreferenced formal
+// parameter) in MSVC with -W4.  Unfortunately they cannot be fixed in
+// the macro definition, as the warnings are generated when the macro
+// is expanded and macro expansion cannot contain #pragma.  Therefore
+// we suppress them here.
+// Also suppress C4503 decorated name length exceeded, name was truncated
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
+# pragma warning(disable:4503)
+#endif
+// Tests the ACTION*() macro family.
+
+// Tests that ACTION() can define an action that doesn't reference the
+// mock function arguments.
+ACTION(Return5) { return 5; }
+
+TEST(ActionMacroTest, WorksWhenNotReferencingArguments) {
+  Action<double()> a1 = Return5();
+  EXPECT_DOUBLE_EQ(5, a1.Perform(std::make_tuple()));
+
+  Action<int(double, bool)> a2 = Return5();
+  EXPECT_EQ(5, a2.Perform(std::make_tuple(1, true)));
+}
+
+// Tests that ACTION() can define an action that returns void.
+ACTION(IncrementArg1) { (*arg1)++; }
+
+TEST(ActionMacroTest, WorksWhenReturningVoid) {
+  Action<void(int, int*)> a1 = IncrementArg1();
+  int n = 0;
+  a1.Perform(std::make_tuple(5, &n));
+  EXPECT_EQ(1, n);
+}
+
+// Tests that the body of ACTION() can reference the type of the
+// argument.
+ACTION(IncrementArg2) {
+  StaticAssertTypeEq<int*, arg2_type>();
+  arg2_type temp = arg2;
+  (*temp)++;
+}
+
+TEST(ActionMacroTest, CanReferenceArgumentType) {
+  Action<void(int, bool, int*)> a1 = IncrementArg2();
+  int n = 0;
+  a1.Perform(std::make_tuple(5, false, &n));
+  EXPECT_EQ(1, n);
+}
+
+// Tests that the body of ACTION() can reference the argument tuple
+// via args_type and args.
+ACTION(Sum2) {
+  StaticAssertTypeEq<std::tuple<int, char, int*>, args_type>();
+  args_type args_copy = args;
+  return std::get<0>(args_copy) + std::get<1>(args_copy);
+}
+
+TEST(ActionMacroTest, CanReferenceArgumentTuple) {
+  Action<int(int, char, int*)> a1 = Sum2();
+  int dummy = 0;
+  EXPECT_EQ(11, a1.Perform(std::make_tuple(5, Char(6), &dummy)));
+}
+
+// Tests that the body of ACTION() can reference the mock function
+// type.
+int Dummy(bool flag) { return flag? 1 : 0; }
+
+ACTION(InvokeDummy) {
+  StaticAssertTypeEq<int(bool), function_type>();
+  function_type* fp = &Dummy;
+  return (*fp)(true);
+}
+
+TEST(ActionMacroTest, CanReferenceMockFunctionType) {
+  Action<int(bool)> a1 = InvokeDummy();
+  EXPECT_EQ(1, a1.Perform(std::make_tuple(true)));
+  EXPECT_EQ(1, a1.Perform(std::make_tuple(false)));
+}
+
+// Tests that the body of ACTION() can reference the mock function's
+// return type.
+ACTION(InvokeDummy2) {
+  StaticAssertTypeEq<int, return_type>();
+  return_type result = Dummy(true);
+  return result;
+}
+
+TEST(ActionMacroTest, CanReferenceMockFunctionReturnType) {
+  Action<int(bool)> a1 = InvokeDummy2();
+  EXPECT_EQ(1, a1.Perform(std::make_tuple(true)));
+  EXPECT_EQ(1, a1.Perform(std::make_tuple(false)));
+}
+
+// Tests that ACTION() works for arguments passed by const reference.
+ACTION(ReturnAddrOfConstBoolReferenceArg) {
+  StaticAssertTypeEq<const bool&, arg1_type>();
+  return &arg1;
+}
+
+TEST(ActionMacroTest, WorksForConstReferenceArg) {
+  Action<const bool*(int, const bool&)> a = ReturnAddrOfConstBoolReferenceArg();
+  const bool b = false;
+  EXPECT_EQ(&b, a.Perform(std::tuple<int, const bool&>(0, b)));
+}
+
+// Tests that ACTION() works for arguments passed by non-const reference.
+ACTION(ReturnAddrOfIntReferenceArg) {
+  StaticAssertTypeEq<int&, arg0_type>();
+  return &arg0;
+}
+
+TEST(ActionMacroTest, WorksForNonConstReferenceArg) {
+  Action<int*(int&, bool, int)> a = ReturnAddrOfIntReferenceArg();
+  int n = 0;
+  EXPECT_EQ(&n, a.Perform(std::tuple<int&, bool, int>(n, true, 1)));
+}
+
+// Tests that ACTION() can be used in a namespace.
+namespace action_test {
+ACTION(Sum) { return arg0 + arg1; }
+}  // namespace action_test
+
+TEST(ActionMacroTest, WorksInNamespace) {
+  Action<int(int, int)> a1 = action_test::Sum();
+  EXPECT_EQ(3, a1.Perform(std::make_tuple(1, 2)));
+}
+
+// Tests that the same ACTION definition works for mock functions with
+// different argument numbers.
+ACTION(PlusTwo) { return arg0 + 2; }
+
+TEST(ActionMacroTest, WorksForDifferentArgumentNumbers) {
+  Action<int(int)> a1 = PlusTwo();
+  EXPECT_EQ(4, a1.Perform(std::make_tuple(2)));
+
+  Action<double(float, void*)> a2 = PlusTwo();
+  int dummy;
+  EXPECT_DOUBLE_EQ(6, a2.Perform(std::make_tuple(4.0f, &dummy)));
+}
+
+// Tests that ACTION_P can define a parameterized action.
+ACTION_P(Plus, n) { return arg0 + n; }
+
+TEST(ActionPMacroTest, DefinesParameterizedAction) {
+  Action<int(int m, bool t)> a1 = Plus(9);
+  EXPECT_EQ(10, a1.Perform(std::make_tuple(1, true)));
+}
+
+// Tests that the body of ACTION_P can reference the argument types
+// and the parameter type.
+ACTION_P(TypedPlus, n) {
+  arg0_type t1 = arg0;
+  n_type t2 = n;
+  return t1 + t2;
+}
+
+TEST(ActionPMacroTest, CanReferenceArgumentAndParameterTypes) {
+  Action<int(char m, bool t)> a1 = TypedPlus(9);
+  EXPECT_EQ(10, a1.Perform(std::make_tuple(Char(1), true)));
+}
+
+// Tests that a parameterized action can be used in any mock function
+// whose type is compatible.
+TEST(ActionPMacroTest, WorksInCompatibleMockFunction) {
+  Action<std::string(const std::string& s)> a1 = Plus("tail");
+  const std::string re = "re";
+  std::tuple<const std::string> dummy = std::make_tuple(re);
+  EXPECT_EQ("retail", a1.Perform(dummy));
+}
+
+// Tests that we can use ACTION*() to define actions overloaded on the
+// number of parameters.
+
+ACTION(OverloadedAction) { return arg0 ? arg1 : "hello"; }
+
+ACTION_P(OverloadedAction, default_value) {
+  return arg0 ? arg1 : default_value;
+}
+
+ACTION_P2(OverloadedAction, true_value, false_value) {
+  return arg0 ? true_value : false_value;
+}
+
+TEST(ActionMacroTest, CanDefineOverloadedActions) {
+  typedef Action<const char*(bool, const char*)> MyAction;
+
+  const MyAction a1 = OverloadedAction();
+  EXPECT_STREQ("hello", a1.Perform(std::make_tuple(false, CharPtr("world"))));
+  EXPECT_STREQ("world", a1.Perform(std::make_tuple(true, CharPtr("world"))));
+
+  const MyAction a2 = OverloadedAction("hi");
+  EXPECT_STREQ("hi", a2.Perform(std::make_tuple(false, CharPtr("world"))));
+  EXPECT_STREQ("world", a2.Perform(std::make_tuple(true, CharPtr("world"))));
+
+  const MyAction a3 = OverloadedAction("hi", "you");
+  EXPECT_STREQ("hi", a3.Perform(std::make_tuple(true, CharPtr("world"))));
+  EXPECT_STREQ("you", a3.Perform(std::make_tuple(false, CharPtr("world"))));
+}
+
+// Tests ACTION_Pn where n >= 3.
+
+ACTION_P3(Plus, m, n, k) { return arg0 + m + n + k; }
+
+TEST(ActionPnMacroTest, WorksFor3Parameters) {
+  Action<double(int m, bool t)> a1 = Plus(100, 20, 3.4);
+  EXPECT_DOUBLE_EQ(3123.4, a1.Perform(std::make_tuple(3000, true)));
+
+  Action<std::string(const std::string& s)> a2 = Plus("tail", "-", ">");
+  const std::string re = "re";
+  std::tuple<const std::string> dummy = std::make_tuple(re);
+  EXPECT_EQ("retail->", a2.Perform(dummy));
+}
+
+ACTION_P4(Plus, p0, p1, p2, p3) { return arg0 + p0 + p1 + p2 + p3; }
+
+TEST(ActionPnMacroTest, WorksFor4Parameters) {
+  Action<int(int)> a1 = Plus(1, 2, 3, 4);
+  EXPECT_EQ(10 + 1 + 2 + 3 + 4, a1.Perform(std::make_tuple(10)));
+}
+
+ACTION_P5(Plus, p0, p1, p2, p3, p4) { return arg0 + p0 + p1 + p2 + p3 + p4; }
+
+TEST(ActionPnMacroTest, WorksFor5Parameters) {
+  Action<int(int)> a1 = Plus(1, 2, 3, 4, 5);
+  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5, a1.Perform(std::make_tuple(10)));
+}
+
+ACTION_P6(Plus, p0, p1, p2, p3, p4, p5) {
+  return arg0 + p0 + p1 + p2 + p3 + p4 + p5;
+}
+
+TEST(ActionPnMacroTest, WorksFor6Parameters) {
+  Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6);
+  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6, a1.Perform(std::make_tuple(10)));
+}
+
+ACTION_P7(Plus, p0, p1, p2, p3, p4, p5, p6) {
+  return arg0 + p0 + p1 + p2 + p3 + p4 + p5 + p6;
+}
+
+TEST(ActionPnMacroTest, WorksFor7Parameters) {
+  Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6, 7);
+  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7, a1.Perform(std::make_tuple(10)));
+}
+
+ACTION_P8(Plus, p0, p1, p2, p3, p4, p5, p6, p7) {
+  return arg0 + p0 + p1 + p2 + p3 + p4 + p5 + p6 + p7;
+}
+
+TEST(ActionPnMacroTest, WorksFor8Parameters) {
+  Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6, 7, 8);
+  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8,
+            a1.Perform(std::make_tuple(10)));
+}
+
+ACTION_P9(Plus, p0, p1, p2, p3, p4, p5, p6, p7, p8) {
+  return arg0 + p0 + p1 + p2 + p3 + p4 + p5 + p6 + p7 + p8;
+}
+
+TEST(ActionPnMacroTest, WorksFor9Parameters) {
+  Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6, 7, 8, 9);
+  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9,
+            a1.Perform(std::make_tuple(10)));
+}
+
+ACTION_P10(Plus, p0, p1, p2, p3, p4, p5, p6, p7, p8, last_param) {
+  arg0_type t0 = arg0;
+  last_param_type t9 = last_param;
+  return t0 + p0 + p1 + p2 + p3 + p4 + p5 + p6 + p7 + p8 + t9;
+}
+
+TEST(ActionPnMacroTest, WorksFor10Parameters) {
+  Action<int(int)> a1 = Plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
+  EXPECT_EQ(10 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10,
+            a1.Perform(std::make_tuple(10)));
+}
+
+// Tests that the action body can promote the parameter types.
+
+ACTION_P2(PadArgument, prefix, suffix) {
+  // The following lines promote the two parameters to desired types.
+  std::string prefix_str(prefix);
+  char suffix_char = static_cast<char>(suffix);
+  return prefix_str + arg0 + suffix_char;
+}
+
+TEST(ActionPnMacroTest, SimpleTypePromotion) {
+  Action<std::string(const char*)> no_promo =
+      PadArgument(std::string("foo"), 'r');
+  Action<std::string(const char*)> promo =
+      PadArgument("foo", static_cast<int>('r'));
+  EXPECT_EQ("foobar", no_promo.Perform(std::make_tuple(CharPtr("ba"))));
+  EXPECT_EQ("foobar", promo.Perform(std::make_tuple(CharPtr("ba"))));
+}
+
+// Tests that we can partially restrict parameter types using a
+// straight-forward pattern.
+
+// Defines a generic action that doesn't restrict the types of its
+// parameters.
+ACTION_P3(ConcatImpl, a, b, c) {
+  std::stringstream ss;
+  ss << a << b << c;
+  return ss.str();
+}
+
+// Next, we try to restrict that either the first parameter is a
+// string, or the second parameter is an int.
+
+// Defines a partially specialized wrapper that restricts the first
+// parameter to std::string.
+template <typename T1, typename T2>
+// ConcatImplActionP3 is the class template ACTION_P3 uses to
+// implement ConcatImpl.  We shouldn't change the name as this
+// pattern requires the user to use it directly.
+ConcatImplActionP3<std::string, T1, T2>
+Concat(const std::string& a, T1 b, T2 c) {
+  GTEST_INTENTIONAL_CONST_COND_PUSH_()
+  if (true) {
+  GTEST_INTENTIONAL_CONST_COND_POP_()
+    // This branch verifies that ConcatImpl() can be invoked without
+    // explicit template arguments.
+    return ConcatImpl(a, b, c);
+  } else {
+    // This branch verifies that ConcatImpl() can also be invoked with
+    // explicit template arguments.  It doesn't really need to be
+    // executed as this is a compile-time verification.
+    return ConcatImpl<std::string, T1, T2>(a, b, c);
+  }
+}
+
+// Defines another partially specialized wrapper that restricts the
+// second parameter to int.
+template <typename T1, typename T2>
+ConcatImplActionP3<T1, int, T2>
+Concat(T1 a, int b, T2 c) {
+  return ConcatImpl(a, b, c);
+}
+
+TEST(ActionPnMacroTest, CanPartiallyRestrictParameterTypes) {
+  Action<const std::string()> a1 = Concat("Hello", "1", 2);
+  EXPECT_EQ("Hello12", a1.Perform(std::make_tuple()));
+
+  a1 = Concat(1, 2, 3);
+  EXPECT_EQ("123", a1.Perform(std::make_tuple()));
+}
+
+// Verifies the type of an ACTION*.
+
+ACTION(DoFoo) {}
+ACTION_P(DoFoo, p) {}
+ACTION_P2(DoFoo, p0, p1) {}
+
+TEST(ActionPnMacroTest, TypesAreCorrect) {
+  // DoFoo() must be assignable to a DoFooAction variable.
+  DoFooAction a0 = DoFoo();
+
+  // DoFoo(1) must be assignable to a DoFooActionP variable.
+  DoFooActionP<int> a1 = DoFoo(1);
+
+  // DoFoo(p1, ..., pk) must be assignable to a DoFooActionPk
+  // variable, and so on.
+  DoFooActionP2<int, char> a2 = DoFoo(1, '2');
+  PlusActionP3<int, int, char> a3 = Plus(1, 2, '3');
+  PlusActionP4<int, int, int, char> a4 = Plus(1, 2, 3, '4');
+  PlusActionP5<int, int, int, int, char> a5 = Plus(1, 2, 3, 4, '5');
+  PlusActionP6<int, int, int, int, int, char> a6 = Plus(1, 2, 3, 4, 5, '6');
+  PlusActionP7<int, int, int, int, int, int, char> a7 =
+      Plus(1, 2, 3, 4, 5, 6, '7');
+  PlusActionP8<int, int, int, int, int, int, int, char> a8 =
+      Plus(1, 2, 3, 4, 5, 6, 7, '8');
+  PlusActionP9<int, int, int, int, int, int, int, int, char> a9 =
+      Plus(1, 2, 3, 4, 5, 6, 7, 8, '9');
+  PlusActionP10<int, int, int, int, int, int, int, int, int, char> a10 =
+      Plus(1, 2, 3, 4, 5, 6, 7, 8, 9, '0');
+
+  // Avoid "unused variable" warnings.
+  (void)a0;
+  (void)a1;
+  (void)a2;
+  (void)a3;
+  (void)a4;
+  (void)a5;
+  (void)a6;
+  (void)a7;
+  (void)a8;
+  (void)a9;
+  (void)a10;
+}
+
+// Tests that an ACTION_P*() action can be explicitly instantiated
+// with reference-typed parameters.
+
+ACTION_P(Plus1, x) { return x; }
+ACTION_P2(Plus2, x, y) { return x + y; }
+ACTION_P3(Plus3, x, y, z) { return x + y + z; }
+ACTION_P10(Plus10, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9) {
+  return a0 + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9;
+}
+
+TEST(ActionPnMacroTest, CanExplicitlyInstantiateWithReferenceTypes) {
+  int x = 1, y = 2, z = 3;
+  const std::tuple<> empty = std::make_tuple();
+
+  Action<int()> a = Plus1<int&>(x);
+  EXPECT_EQ(1, a.Perform(empty));
+
+  a = Plus2<const int&, int&>(x, y);
+  EXPECT_EQ(3, a.Perform(empty));
+
+  a = Plus3<int&, const int&, int&>(x, y, z);
+  EXPECT_EQ(6, a.Perform(empty));
+
+  int n[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
+  a = Plus10<const int&, int&, const int&, int&, const int&, int&, const int&,
+      int&, const int&, int&>(n[0], n[1], n[2], n[3], n[4], n[5], n[6], n[7],
+                              n[8], n[9]);
+  EXPECT_EQ(55, a.Perform(empty));
+}
+
+class NullaryConstructorClass {
+ public:
+  NullaryConstructorClass() : value_(123) {}
+  int value_;
+};
+
+// Tests using ReturnNew() with a nullary constructor.
+TEST(ReturnNewTest, NoArgs) {
+  Action<NullaryConstructorClass*()> a = ReturnNew<NullaryConstructorClass>();
+  NullaryConstructorClass* c = a.Perform(std::make_tuple());
+  EXPECT_EQ(123, c->value_);
+  delete c;
+}
+
+class UnaryConstructorClass {
+ public:
+  explicit UnaryConstructorClass(int value) : value_(value) {}
+  int value_;
+};
+
+// Tests using ReturnNew() with a unary constructor.
+TEST(ReturnNewTest, Unary) {
+  Action<UnaryConstructorClass*()> a = ReturnNew<UnaryConstructorClass>(4000);
+  UnaryConstructorClass* c = a.Perform(std::make_tuple());
+  EXPECT_EQ(4000, c->value_);
+  delete c;
+}
+
+TEST(ReturnNewTest, UnaryWorksWhenMockMethodHasArgs) {
+  Action<UnaryConstructorClass*(bool, int)> a =
+      ReturnNew<UnaryConstructorClass>(4000);
+  UnaryConstructorClass* c = a.Perform(std::make_tuple(false, 5));
+  EXPECT_EQ(4000, c->value_);
+  delete c;
+}
+
+TEST(ReturnNewTest, UnaryWorksWhenMockMethodReturnsPointerToConst) {
+  Action<const UnaryConstructorClass*()> a =
+      ReturnNew<UnaryConstructorClass>(4000);
+  const UnaryConstructorClass* c = a.Perform(std::make_tuple());
+  EXPECT_EQ(4000, c->value_);
+  delete c;
+}
+
+class TenArgConstructorClass {
+ public:
+  TenArgConstructorClass(int a1, int a2, int a3, int a4, int a5,
+                         int a6, int a7, int a8, int a9, int a10)
+    : value_(a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a10) {
+  }
+  int value_;
+};
+
+// Tests using ReturnNew() with a 10-argument constructor.
+TEST(ReturnNewTest, ConstructorThatTakes10Arguments) {
+  Action<TenArgConstructorClass*()> a =
+      ReturnNew<TenArgConstructorClass>(1000000000, 200000000, 30000000,
+                                        4000000, 500000, 60000,
+                                        7000, 800, 90, 0);
+  TenArgConstructorClass* c = a.Perform(std::make_tuple());
+  EXPECT_EQ(1234567890, c->value_);
+  delete c;
+}
+
+// Tests that ACTION_TEMPLATE works when there is no value parameter.
+ACTION_TEMPLATE(CreateNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_0_VALUE_PARAMS()) {
+  return new T;
+}
+
+TEST(ActionTemplateTest, WorksWithoutValueParam) {
+  const Action<int*()> a = CreateNew<int>();
+  int* p = a.Perform(std::make_tuple());
+  delete p;
+}
+
+// Tests that ACTION_TEMPLATE works when there are value parameters.
+ACTION_TEMPLATE(CreateNew,
+                HAS_1_TEMPLATE_PARAMS(typename, T),
+                AND_1_VALUE_PARAMS(a0)) {
+  return new T(a0);
+}
+
+TEST(ActionTemplateTest, WorksWithValueParams) {
+  const Action<int*()> a = CreateNew<int>(42);
+  int* p = a.Perform(std::make_tuple());
+  EXPECT_EQ(42, *p);
+  delete p;
+}
+
+// Tests that ACTION_TEMPLATE works for integral template parameters.
+ACTION_TEMPLATE(MyDeleteArg,
+                HAS_1_TEMPLATE_PARAMS(int, k),
+                AND_0_VALUE_PARAMS()) {
+  delete std::get<k>(args);
+}
+
+// Resets a bool variable in the destructor.
+class BoolResetter {
+ public:
+  explicit BoolResetter(bool* value) : value_(value) {}
+  ~BoolResetter() { *value_ = false; }
+ private:
+  bool* value_;
+};
+
+TEST(ActionTemplateTest, WorksForIntegralTemplateParams) {
+  const Action<void(int*, BoolResetter*)> a = MyDeleteArg<1>();
+  int n = 0;
+  bool b = true;
+  BoolResetter* resetter = new BoolResetter(&b);
+  a.Perform(std::make_tuple(&n, resetter));
+  EXPECT_FALSE(b);  // Verifies that resetter is deleted.
+}
+
+// Tests that ACTION_TEMPLATES works for template template parameters.
+ACTION_TEMPLATE(ReturnSmartPointer,
+                HAS_1_TEMPLATE_PARAMS(template <typename Pointee> class,
+                                      Pointer),
+                AND_1_VALUE_PARAMS(pointee)) {
+  return Pointer<pointee_type>(new pointee_type(pointee));
+}
+
+TEST(ActionTemplateTest, WorksForTemplateTemplateParameters) {
+  const Action<std::shared_ptr<int>()> a =
+      ReturnSmartPointer<std::shared_ptr>(42);
+  std::shared_ptr<int> p = a.Perform(std::make_tuple());
+  EXPECT_EQ(42, *p);
+}
+
+// Tests that ACTION_TEMPLATE works for 10 template parameters.
+template <typename T1, typename T2, typename T3, int k4, bool k5,
+          unsigned int k6, typename T7, typename T8, typename T9>
+struct GiantTemplate {
+ public:
+  explicit GiantTemplate(int a_value) : value(a_value) {}
+  int value;
+};
+
+ACTION_TEMPLATE(ReturnGiant,
+                HAS_10_TEMPLATE_PARAMS(
+                    typename, T1,
+                    typename, T2,
+                    typename, T3,
+                    int, k4,
+                    bool, k5,
+                    unsigned int, k6,
+                    class, T7,
+                    class, T8,
+                    class, T9,
+                    template <typename T> class, T10),
+                AND_1_VALUE_PARAMS(value)) {
+  return GiantTemplate<T10<T1>, T2, T3, k4, k5, k6, T7, T8, T9>(value);
+}
+
+TEST(ActionTemplateTest, WorksFor10TemplateParameters) {
+  using Giant = GiantTemplate<std::shared_ptr<int>, bool, double, 5, true, 6,
+                              char, unsigned, int>;
+  const Action<Giant()> a = ReturnGiant<int, bool, double, 5, true, 6, char,
+                                        unsigned, int, std::shared_ptr>(42);
+  Giant giant = a.Perform(std::make_tuple());
+  EXPECT_EQ(42, giant.value);
+}
+
+// Tests that ACTION_TEMPLATE works for 10 value parameters.
+ACTION_TEMPLATE(ReturnSum,
+                HAS_1_TEMPLATE_PARAMS(typename, Number),
+                AND_10_VALUE_PARAMS(v1, v2, v3, v4, v5, v6, v7, v8, v9, v10)) {
+  return static_cast<Number>(v1) + v2 + v3 + v4 + v5 + v6 + v7 + v8 + v9 + v10;
+}
+
+TEST(ActionTemplateTest, WorksFor10ValueParameters) {
+  const Action<int()> a = ReturnSum<int>(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
+  EXPECT_EQ(55, a.Perform(std::make_tuple()));
+}
+
+// Tests that ACTION_TEMPLATE and ACTION/ACTION_P* can be overloaded
+// on the number of value parameters.
+
+ACTION(ReturnSum) { return 0; }
+
+ACTION_P(ReturnSum, x) { return x; }
+
+ACTION_TEMPLATE(ReturnSum,
+                HAS_1_TEMPLATE_PARAMS(typename, Number),
+                AND_2_VALUE_PARAMS(v1, v2)) {
+  return static_cast<Number>(v1) + v2;
+}
+
+ACTION_TEMPLATE(ReturnSum,
+                HAS_1_TEMPLATE_PARAMS(typename, Number),
+                AND_3_VALUE_PARAMS(v1, v2, v3)) {
+  return static_cast<Number>(v1) + v2 + v3;
+}
+
+ACTION_TEMPLATE(ReturnSum,
+                HAS_2_TEMPLATE_PARAMS(typename, Number, int, k),
+                AND_4_VALUE_PARAMS(v1, v2, v3, v4)) {
+  return static_cast<Number>(v1) + v2 + v3 + v4 + k;
+}
+
+TEST(ActionTemplateTest, CanBeOverloadedOnNumberOfValueParameters) {
+  const Action<int()> a0 = ReturnSum();
+  const Action<int()> a1 = ReturnSum(1);
+  const Action<int()> a2 = ReturnSum<int>(1, 2);
+  const Action<int()> a3 = ReturnSum<int>(1, 2, 3);
+  const Action<int()> a4 = ReturnSum<int, 10000>(2000, 300, 40, 5);
+  EXPECT_EQ(0, a0.Perform(std::make_tuple()));
+  EXPECT_EQ(1, a1.Perform(std::make_tuple()));
+  EXPECT_EQ(3, a2.Perform(std::make_tuple()));
+  EXPECT_EQ(6, a3.Perform(std::make_tuple()));
+  EXPECT_EQ(12345, a4.Perform(std::make_tuple()));
+}
+
+
+}  // namespace gmock_generated_actions_test
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-generated-function-mockers_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-generated-function-mockers_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..dff3a9f0fadb91baee358974f565c172ed7b5a4a
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-generated-function-mockers_test.cc
@@ -0,0 +1,659 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests the function mocker classes.
+
+#include "gmock/gmock-generated-function-mockers.h"
+
+#if GTEST_OS_WINDOWS
+// MSDN says the header file to be included for STDMETHOD is BaseTyps.h but
+// we are getting compiler errors if we use basetyps.h, hence including
+// objbase.h for definition of STDMETHOD.
+# include <objbase.h>
+#endif  // GTEST_OS_WINDOWS
+
+#include <map>
+#include <string>
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+namespace testing {
+namespace gmock_generated_function_mockers_test {
+
+using testing::_;
+using testing::A;
+using testing::An;
+using testing::AnyNumber;
+using testing::Const;
+using testing::DoDefault;
+using testing::Eq;
+using testing::Lt;
+using testing::MockFunction;
+using testing::Ref;
+using testing::Return;
+using testing::ReturnRef;
+using testing::TypedEq;
+
+template<typename T>
+class TemplatedCopyable {
+ public:
+  TemplatedCopyable() {}
+
+  template <typename U>
+  TemplatedCopyable(const U& other) {}  // NOLINT
+};
+
+class FooInterface {
+ public:
+  virtual ~FooInterface() {}
+
+  virtual void VoidReturning(int x) = 0;
+
+  virtual int Nullary() = 0;
+  virtual bool Unary(int x) = 0;
+  virtual long Binary(short x, int y) = 0;  // NOLINT
+  virtual int Decimal(bool b, char c, short d, int e, long f,  // NOLINT
+                      float g, double h, unsigned i, char* j,
+                      const std::string& k) = 0;
+
+  virtual bool TakesNonConstReference(int& n) = 0;  // NOLINT
+  virtual std::string TakesConstReference(const int& n) = 0;
+  virtual bool TakesConst(const int x) = 0;
+
+  virtual int OverloadedOnArgumentNumber() = 0;
+  virtual int OverloadedOnArgumentNumber(int n) = 0;
+
+  virtual int OverloadedOnArgumentType(int n) = 0;
+  virtual char OverloadedOnArgumentType(char c) = 0;
+
+  virtual int OverloadedOnConstness() = 0;
+  virtual char OverloadedOnConstness() const = 0;
+
+  virtual int TypeWithHole(int (*func)()) = 0;
+  virtual int TypeWithComma(const std::map<int, std::string>& a_map) = 0;
+  virtual int TypeWithTemplatedCopyCtor(
+      const TemplatedCopyable<int>& a_vector) = 0;
+
+#if GTEST_OS_WINDOWS
+  STDMETHOD_(int, CTNullary)() = 0;
+  STDMETHOD_(bool, CTUnary)(int x) = 0;
+  STDMETHOD_(int, CTDecimal)
+  (bool b, char c, short d, int e, long f,  // NOLINT
+   float g, double h, unsigned i, char* j, const std::string& k) = 0;
+  STDMETHOD_(char, CTConst)(int x) const = 0;
+#endif  // GTEST_OS_WINDOWS
+};
+
+// Const qualifiers on arguments were once (incorrectly) considered
+// significant in determining whether two virtual functions had the same
+// signature. This was fixed in Visual Studio 2008. However, the compiler
+// still emits a warning that alerts about this change in behavior.
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable : 4373)
+#endif
+class MockFoo : public FooInterface {
+ public:
+  MockFoo() {}
+
+  // Makes sure that a mock function parameter can be named.
+  MOCK_METHOD1(VoidReturning, void(int n));  // NOLINT
+
+  MOCK_METHOD0(Nullary, int());  // NOLINT
+
+  // Makes sure that a mock function parameter can be unnamed.
+  MOCK_METHOD1(Unary, bool(int));  // NOLINT
+  MOCK_METHOD2(Binary, long(short, int));  // NOLINT
+  MOCK_METHOD10(Decimal, int(bool, char, short, int, long, float,  // NOLINT
+                             double, unsigned, char*, const std::string& str));
+
+  MOCK_METHOD1(TakesNonConstReference, bool(int&));  // NOLINT
+  MOCK_METHOD1(TakesConstReference, std::string(const int&));
+  MOCK_METHOD1(TakesConst, bool(const int));  // NOLINT
+
+  // Tests that the function return type can contain unprotected comma.
+  MOCK_METHOD0(ReturnTypeWithComma, std::map<int, std::string>());
+  MOCK_CONST_METHOD1(ReturnTypeWithComma,
+                     std::map<int, std::string>(int));  // NOLINT
+
+  MOCK_METHOD0(OverloadedOnArgumentNumber, int());  // NOLINT
+  MOCK_METHOD1(OverloadedOnArgumentNumber, int(int));  // NOLINT
+
+  MOCK_METHOD1(OverloadedOnArgumentType, int(int));  // NOLINT
+  MOCK_METHOD1(OverloadedOnArgumentType, char(char));  // NOLINT
+
+  MOCK_METHOD0(OverloadedOnConstness, int());  // NOLINT
+  MOCK_CONST_METHOD0(OverloadedOnConstness, char());  // NOLINT
+
+  MOCK_METHOD1(TypeWithHole, int(int (*)()));  // NOLINT
+  MOCK_METHOD1(TypeWithComma,
+               int(const std::map<int, std::string>&));  // NOLINT
+  MOCK_METHOD1(TypeWithTemplatedCopyCtor,
+               int(const TemplatedCopyable<int>&));  // NOLINT
+
+#if GTEST_OS_WINDOWS
+  MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, CTNullary, int());
+  MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, CTUnary, bool(int));
+  MOCK_METHOD10_WITH_CALLTYPE(STDMETHODCALLTYPE, CTDecimal,
+                              int(bool b, char c, short d, int e, long f,
+                                  float g, double h, unsigned i, char* j,
+                                  const std::string& k));
+  MOCK_CONST_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, CTConst, char(int));
+
+  // Tests that the function return type can contain unprotected comma.
+  MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, CTReturnTypeWithComma,
+                             std::map<int, std::string>());
+#endif  // GTEST_OS_WINDOWS
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFoo);
+};
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+class FunctionMockerTest : public testing::Test {
+ protected:
+  FunctionMockerTest() : foo_(&mock_foo_) {}
+
+  FooInterface* const foo_;
+  MockFoo mock_foo_;
+};
+
+// Tests mocking a void-returning function.
+TEST_F(FunctionMockerTest, MocksVoidFunction) {
+  EXPECT_CALL(mock_foo_, VoidReturning(Lt(100)));
+  foo_->VoidReturning(0);
+}
+
+// Tests mocking a nullary function.
+TEST_F(FunctionMockerTest, MocksNullaryFunction) {
+  EXPECT_CALL(mock_foo_, Nullary())
+      .WillOnce(DoDefault())
+      .WillOnce(Return(1));
+
+  EXPECT_EQ(0, foo_->Nullary());
+  EXPECT_EQ(1, foo_->Nullary());
+}
+
+// Tests mocking a unary function.
+TEST_F(FunctionMockerTest, MocksUnaryFunction) {
+  EXPECT_CALL(mock_foo_, Unary(Eq(2)))
+      .Times(2)
+      .WillOnce(Return(true));
+
+  EXPECT_TRUE(foo_->Unary(2));
+  EXPECT_FALSE(foo_->Unary(2));
+}
+
+// Tests mocking a binary function.
+TEST_F(FunctionMockerTest, MocksBinaryFunction) {
+  EXPECT_CALL(mock_foo_, Binary(2, _))
+      .WillOnce(Return(3));
+
+  EXPECT_EQ(3, foo_->Binary(2, 1));
+}
+
+// Tests mocking a decimal function.
+TEST_F(FunctionMockerTest, MocksDecimalFunction) {
+  EXPECT_CALL(mock_foo_, Decimal(true, 'a', 0, 0, 1L, A<float>(), Lt(100), 5U,
+                                 nullptr, "hi"))
+      .WillOnce(Return(5));
+
+  EXPECT_EQ(5, foo_->Decimal(true, 'a', 0, 0, 1, 0, 0, 5, nullptr, "hi"));
+}
+
+// Tests mocking a function that takes a non-const reference.
+TEST_F(FunctionMockerTest, MocksFunctionWithNonConstReferenceArgument) {
+  int a = 0;
+  EXPECT_CALL(mock_foo_, TakesNonConstReference(Ref(a)))
+      .WillOnce(Return(true));
+
+  EXPECT_TRUE(foo_->TakesNonConstReference(a));
+}
+
+// Tests mocking a function that takes a const reference.
+TEST_F(FunctionMockerTest, MocksFunctionWithConstReferenceArgument) {
+  int a = 0;
+  EXPECT_CALL(mock_foo_, TakesConstReference(Ref(a)))
+      .WillOnce(Return("Hello"));
+
+  EXPECT_EQ("Hello", foo_->TakesConstReference(a));
+}
+
+// Tests mocking a function that takes a const variable.
+TEST_F(FunctionMockerTest, MocksFunctionWithConstArgument) {
+  EXPECT_CALL(mock_foo_, TakesConst(Lt(10)))
+      .WillOnce(DoDefault());
+
+  EXPECT_FALSE(foo_->TakesConst(5));
+}
+
+// Tests mocking functions overloaded on the number of arguments.
+TEST_F(FunctionMockerTest, MocksFunctionsOverloadedOnArgumentNumber) {
+  EXPECT_CALL(mock_foo_, OverloadedOnArgumentNumber())
+      .WillOnce(Return(1));
+  EXPECT_CALL(mock_foo_, OverloadedOnArgumentNumber(_))
+      .WillOnce(Return(2));
+
+  EXPECT_EQ(2, foo_->OverloadedOnArgumentNumber(1));
+  EXPECT_EQ(1, foo_->OverloadedOnArgumentNumber());
+}
+
+// Tests mocking functions overloaded on the types of argument.
+TEST_F(FunctionMockerTest, MocksFunctionsOverloadedOnArgumentType) {
+  EXPECT_CALL(mock_foo_, OverloadedOnArgumentType(An<int>()))
+      .WillOnce(Return(1));
+  EXPECT_CALL(mock_foo_, OverloadedOnArgumentType(TypedEq<char>('a')))
+      .WillOnce(Return('b'));
+
+  EXPECT_EQ(1, foo_->OverloadedOnArgumentType(0));
+  EXPECT_EQ('b', foo_->OverloadedOnArgumentType('a'));
+}
+
+// Tests mocking functions overloaded on the const-ness of this object.
+TEST_F(FunctionMockerTest, MocksFunctionsOverloadedOnConstnessOfThis) {
+  EXPECT_CALL(mock_foo_, OverloadedOnConstness());
+  EXPECT_CALL(Const(mock_foo_), OverloadedOnConstness())
+      .WillOnce(Return('a'));
+
+  EXPECT_EQ(0, foo_->OverloadedOnConstness());
+  EXPECT_EQ('a', Const(*foo_).OverloadedOnConstness());
+}
+
+TEST_F(FunctionMockerTest, MocksReturnTypeWithComma) {
+  const std::map<int, std::string> a_map;
+  EXPECT_CALL(mock_foo_, ReturnTypeWithComma())
+      .WillOnce(Return(a_map));
+  EXPECT_CALL(mock_foo_, ReturnTypeWithComma(42))
+      .WillOnce(Return(a_map));
+
+  EXPECT_EQ(a_map, mock_foo_.ReturnTypeWithComma());
+  EXPECT_EQ(a_map, mock_foo_.ReturnTypeWithComma(42));
+}
+
+TEST_F(FunctionMockerTest, MocksTypeWithTemplatedCopyCtor) {
+  EXPECT_CALL(mock_foo_, TypeWithTemplatedCopyCtor(_)).WillOnce(Return(true));
+  EXPECT_TRUE(foo_->TypeWithTemplatedCopyCtor(TemplatedCopyable<int>()));
+}
+
+#if GTEST_OS_WINDOWS
+// Tests mocking a nullary function with calltype.
+TEST_F(FunctionMockerTest, MocksNullaryFunctionWithCallType) {
+  EXPECT_CALL(mock_foo_, CTNullary())
+      .WillOnce(Return(-1))
+      .WillOnce(Return(0));
+
+  EXPECT_EQ(-1, foo_->CTNullary());
+  EXPECT_EQ(0, foo_->CTNullary());
+}
+
+// Tests mocking a unary function with calltype.
+TEST_F(FunctionMockerTest, MocksUnaryFunctionWithCallType) {
+  EXPECT_CALL(mock_foo_, CTUnary(Eq(2)))
+      .Times(2)
+      .WillOnce(Return(true))
+      .WillOnce(Return(false));
+
+  EXPECT_TRUE(foo_->CTUnary(2));
+  EXPECT_FALSE(foo_->CTUnary(2));
+}
+
+// Tests mocking a decimal function with calltype.
+TEST_F(FunctionMockerTest, MocksDecimalFunctionWithCallType) {
+  EXPECT_CALL(mock_foo_, CTDecimal(true, 'a', 0, 0, 1L, A<float>(), Lt(100), 5U,
+                                   nullptr, "hi"))
+      .WillOnce(Return(10));
+
+  EXPECT_EQ(10, foo_->CTDecimal(true, 'a', 0, 0, 1, 0, 0, 5, nullptr, "hi"));
+}
+
+// Tests mocking functions overloaded on the const-ness of this object.
+TEST_F(FunctionMockerTest, MocksFunctionsConstFunctionWithCallType) {
+  EXPECT_CALL(Const(mock_foo_), CTConst(_))
+      .WillOnce(Return('a'));
+
+  EXPECT_EQ('a', Const(*foo_).CTConst(0));
+}
+
+TEST_F(FunctionMockerTest, MocksReturnTypeWithCommaAndCallType) {
+  const std::map<int, std::string> a_map;
+  EXPECT_CALL(mock_foo_, CTReturnTypeWithComma())
+      .WillOnce(Return(a_map));
+
+  EXPECT_EQ(a_map, mock_foo_.CTReturnTypeWithComma());
+}
+
+#endif  // GTEST_OS_WINDOWS
+
+class MockB {
+ public:
+  MockB() {}
+
+  MOCK_METHOD0(DoB, void());
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockB);
+};
+
+// Tests that functions with no EXPECT_CALL() ruls can be called any
+// number of times.
+TEST(ExpectCallTest, UnmentionedFunctionCanBeCalledAnyNumberOfTimes) {
+  {
+    MockB b;
+  }
+
+  {
+    MockB b;
+    b.DoB();
+  }
+
+  {
+    MockB b;
+    b.DoB();
+    b.DoB();
+  }
+}
+
+// Tests mocking template interfaces.
+
+template <typename T>
+class StackInterface {
+ public:
+  virtual ~StackInterface() {}
+
+  // Template parameter appears in function parameter.
+  virtual void Push(const T& value) = 0;
+  virtual void Pop() = 0;
+  virtual int GetSize() const = 0;
+  // Template parameter appears in function return type.
+  virtual const T& GetTop() const = 0;
+};
+
+template <typename T>
+class MockStack : public StackInterface<T> {
+ public:
+  MockStack() {}
+
+  MOCK_METHOD1_T(Push, void(const T& elem));
+  MOCK_METHOD0_T(Pop, void());
+  MOCK_CONST_METHOD0_T(GetSize, int());  // NOLINT
+  MOCK_CONST_METHOD0_T(GetTop, const T&());
+
+  // Tests that the function return type can contain unprotected comma.
+  MOCK_METHOD0_T(ReturnTypeWithComma, std::map<int, int>());
+  MOCK_CONST_METHOD1_T(ReturnTypeWithComma, std::map<int, int>(int));  // NOLINT
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockStack);
+};
+
+// Tests that template mock works.
+TEST(TemplateMockTest, Works) {
+  MockStack<int> mock;
+
+  EXPECT_CALL(mock, GetSize())
+      .WillOnce(Return(0))
+      .WillOnce(Return(1))
+      .WillOnce(Return(0));
+  EXPECT_CALL(mock, Push(_));
+  int n = 5;
+  EXPECT_CALL(mock, GetTop())
+      .WillOnce(ReturnRef(n));
+  EXPECT_CALL(mock, Pop())
+      .Times(AnyNumber());
+
+  EXPECT_EQ(0, mock.GetSize());
+  mock.Push(5);
+  EXPECT_EQ(1, mock.GetSize());
+  EXPECT_EQ(5, mock.GetTop());
+  mock.Pop();
+  EXPECT_EQ(0, mock.GetSize());
+}
+
+TEST(TemplateMockTest, MethodWithCommaInReturnTypeWorks) {
+  MockStack<int> mock;
+
+  const std::map<int, int> a_map;
+  EXPECT_CALL(mock, ReturnTypeWithComma())
+      .WillOnce(Return(a_map));
+  EXPECT_CALL(mock, ReturnTypeWithComma(1))
+      .WillOnce(Return(a_map));
+
+  EXPECT_EQ(a_map, mock.ReturnTypeWithComma());
+  EXPECT_EQ(a_map, mock.ReturnTypeWithComma(1));
+}
+
+#if GTEST_OS_WINDOWS
+// Tests mocking template interfaces with calltype.
+
+template <typename T>
+class StackInterfaceWithCallType {
+ public:
+  virtual ~StackInterfaceWithCallType() {}
+
+  // Template parameter appears in function parameter.
+  STDMETHOD_(void, Push)(const T& value) = 0;
+  STDMETHOD_(void, Pop)() = 0;
+  STDMETHOD_(int, GetSize)() const = 0;
+  // Template parameter appears in function return type.
+  STDMETHOD_(const T&, GetTop)() const = 0;
+};
+
+template <typename T>
+class MockStackWithCallType : public StackInterfaceWithCallType<T> {
+ public:
+  MockStackWithCallType() {}
+
+  MOCK_METHOD1_T_WITH_CALLTYPE(STDMETHODCALLTYPE, Push, void(const T& elem));
+  MOCK_METHOD0_T_WITH_CALLTYPE(STDMETHODCALLTYPE, Pop, void());
+  MOCK_CONST_METHOD0_T_WITH_CALLTYPE(STDMETHODCALLTYPE, GetSize, int());
+  MOCK_CONST_METHOD0_T_WITH_CALLTYPE(STDMETHODCALLTYPE, GetTop, const T&());
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockStackWithCallType);
+};
+
+// Tests that template mock with calltype works.
+TEST(TemplateMockTestWithCallType, Works) {
+  MockStackWithCallType<int> mock;
+
+  EXPECT_CALL(mock, GetSize())
+      .WillOnce(Return(0))
+      .WillOnce(Return(1))
+      .WillOnce(Return(0));
+  EXPECT_CALL(mock, Push(_));
+  int n = 5;
+  EXPECT_CALL(mock, GetTop())
+      .WillOnce(ReturnRef(n));
+  EXPECT_CALL(mock, Pop())
+      .Times(AnyNumber());
+
+  EXPECT_EQ(0, mock.GetSize());
+  mock.Push(5);
+  EXPECT_EQ(1, mock.GetSize());
+  EXPECT_EQ(5, mock.GetTop());
+  mock.Pop();
+  EXPECT_EQ(0, mock.GetSize());
+}
+#endif  // GTEST_OS_WINDOWS
+
+#define MY_MOCK_METHODS1_ \
+    MOCK_METHOD0(Overloaded, void()); \
+    MOCK_CONST_METHOD1(Overloaded, int(int n)); \
+    MOCK_METHOD2(Overloaded, bool(bool f, int n))
+
+class MockOverloadedOnArgNumber {
+ public:
+  MockOverloadedOnArgNumber() {}
+
+  MY_MOCK_METHODS1_;
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockOverloadedOnArgNumber);
+};
+
+TEST(OverloadedMockMethodTest, CanOverloadOnArgNumberInMacroBody) {
+  MockOverloadedOnArgNumber mock;
+  EXPECT_CALL(mock, Overloaded());
+  EXPECT_CALL(mock, Overloaded(1)).WillOnce(Return(2));
+  EXPECT_CALL(mock, Overloaded(true, 1)).WillOnce(Return(true));
+
+  mock.Overloaded();
+  EXPECT_EQ(2, mock.Overloaded(1));
+  EXPECT_TRUE(mock.Overloaded(true, 1));
+}
+
+#define MY_MOCK_METHODS2_ \
+    MOCK_CONST_METHOD1(Overloaded, int(int n)); \
+    MOCK_METHOD1(Overloaded, int(int n))
+
+class MockOverloadedOnConstness {
+ public:
+  MockOverloadedOnConstness() {}
+
+  MY_MOCK_METHODS2_;
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockOverloadedOnConstness);
+};
+
+TEST(OverloadedMockMethodTest, CanOverloadOnConstnessInMacroBody) {
+  MockOverloadedOnConstness mock;
+  const MockOverloadedOnConstness* const_mock = &mock;
+  EXPECT_CALL(mock, Overloaded(1)).WillOnce(Return(2));
+  EXPECT_CALL(*const_mock, Overloaded(1)).WillOnce(Return(3));
+
+  EXPECT_EQ(2, mock.Overloaded(1));
+  EXPECT_EQ(3, const_mock->Overloaded(1));
+}
+
+TEST(MockFunctionTest, WorksForVoidNullary) {
+  MockFunction<void()> foo;
+  EXPECT_CALL(foo, Call());
+  foo.Call();
+}
+
+TEST(MockFunctionTest, WorksForNonVoidNullary) {
+  MockFunction<int()> foo;
+  EXPECT_CALL(foo, Call())
+      .WillOnce(Return(1))
+      .WillOnce(Return(2));
+  EXPECT_EQ(1, foo.Call());
+  EXPECT_EQ(2, foo.Call());
+}
+
+TEST(MockFunctionTest, WorksForVoidUnary) {
+  MockFunction<void(int)> foo;
+  EXPECT_CALL(foo, Call(1));
+  foo.Call(1);
+}
+
+TEST(MockFunctionTest, WorksForNonVoidBinary) {
+  MockFunction<int(bool, int)> foo;
+  EXPECT_CALL(foo, Call(false, 42))
+      .WillOnce(Return(1))
+      .WillOnce(Return(2));
+  EXPECT_CALL(foo, Call(true, Ge(100)))
+      .WillOnce(Return(3));
+  EXPECT_EQ(1, foo.Call(false, 42));
+  EXPECT_EQ(2, foo.Call(false, 42));
+  EXPECT_EQ(3, foo.Call(true, 120));
+}
+
+TEST(MockFunctionTest, WorksFor10Arguments) {
+  MockFunction<int(bool a0, char a1, int a2, int a3, int a4,
+                   int a5, int a6, char a7, int a8, bool a9)> foo;
+  EXPECT_CALL(foo, Call(_, 'a', _, _, _, _, _, _, _, _))
+      .WillOnce(Return(1))
+      .WillOnce(Return(2));
+  EXPECT_EQ(1, foo.Call(false, 'a', 0, 0, 0, 0, 0, 'b', 0, true));
+  EXPECT_EQ(2, foo.Call(true, 'a', 0, 0, 0, 0, 0, 'b', 1, false));
+}
+
+TEST(MockFunctionTest, AsStdFunction) {
+  MockFunction<int(int)> foo;
+  auto call = [](const std::function<int(int)> &f, int i) {
+    return f(i);
+  };
+  EXPECT_CALL(foo, Call(1)).WillOnce(Return(-1));
+  EXPECT_CALL(foo, Call(2)).WillOnce(Return(-2));
+  EXPECT_EQ(-1, call(foo.AsStdFunction(), 1));
+  EXPECT_EQ(-2, call(foo.AsStdFunction(), 2));
+}
+
+TEST(MockFunctionTest, AsStdFunctionReturnsReference) {
+  MockFunction<int&()> foo;
+  int value = 1;
+  EXPECT_CALL(foo, Call()).WillOnce(ReturnRef(value));
+  int& ref = foo.AsStdFunction()();
+  EXPECT_EQ(1, ref);
+  value = 2;
+  EXPECT_EQ(2, ref);
+}
+
+TEST(MockFunctionTest, AsStdFunctionWithReferenceParameter) {
+  MockFunction<int(int &)> foo;
+  auto call = [](const std::function<int(int& )> &f, int &i) {
+    return f(i);
+  };
+  int i = 42;
+  EXPECT_CALL(foo, Call(i)).WillOnce(Return(-1));
+  EXPECT_EQ(-1, call(foo.AsStdFunction(), i));
+}
+
+
+struct MockMethodSizes0 {
+  MOCK_METHOD0(func, void());
+};
+struct MockMethodSizes1 {
+  MOCK_METHOD1(func, void(int));
+};
+struct MockMethodSizes2 {
+  MOCK_METHOD2(func, void(int, int));
+};
+struct MockMethodSizes3 {
+  MOCK_METHOD3(func, void(int, int, int));
+};
+struct MockMethodSizes4 {
+  MOCK_METHOD4(func, void(int, int, int, int));
+};
+
+TEST(MockFunctionTest, MockMethodSizeOverhead) {
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes1));
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes2));
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes3));
+  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes4));
+}
+
+}  // namespace gmock_generated_function_mockers_test
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-generated-matchers_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-generated-matchers_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6c4b30008b77599ee1dd11027319e77f3d463f5d
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-generated-matchers_test.cc
@@ -0,0 +1,1324 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests the built-in matchers generated by a script.
+
+// Silence warning C4244: 'initializing': conversion from 'int' to 'short',
+// possible loss of data and C4100, unreferenced local parameter
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4244)
+# pragma warning(disable:4100)
+#endif
+
+#include "gmock/gmock-generated-matchers.h"
+
+#include <list>
+#include <map>
+#include <memory>
+#include <set>
+#include <sstream>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include "gtest/gtest-spi.h"
+
+namespace {
+
+using std::list;
+using std::map;
+using std::pair;
+using std::set;
+using std::stringstream;
+using std::vector;
+using testing::_;
+using testing::AllOf;
+using testing::AllOfArray;
+using testing::AnyOf;
+using testing::AnyOfArray;
+using testing::Args;
+using testing::Contains;
+using testing::ElementsAre;
+using testing::ElementsAreArray;
+using testing::Eq;
+using testing::Ge;
+using testing::Gt;
+using testing::Le;
+using testing::Lt;
+using testing::MakeMatcher;
+using testing::Matcher;
+using testing::MatcherInterface;
+using testing::MatchResultListener;
+using testing::Ne;
+using testing::Not;
+using testing::Pointee;
+using testing::PrintToString;
+using testing::Ref;
+using testing::StaticAssertTypeEq;
+using testing::StrEq;
+using testing::Value;
+using testing::internal::ElementsAreArrayMatcher;
+
+// Returns the description of the given matcher.
+template <typename T>
+std::string Describe(const Matcher<T>& m) {
+  stringstream ss;
+  m.DescribeTo(&ss);
+  return ss.str();
+}
+
+// Returns the description of the negation of the given matcher.
+template <typename T>
+std::string DescribeNegation(const Matcher<T>& m) {
+  stringstream ss;
+  m.DescribeNegationTo(&ss);
+  return ss.str();
+}
+
+// Returns the reason why x matches, or doesn't match, m.
+template <typename MatcherType, typename Value>
+std::string Explain(const MatcherType& m, const Value& x) {
+  stringstream ss;
+  m.ExplainMatchResultTo(x, &ss);
+  return ss.str();
+}
+
+// For testing ExplainMatchResultTo().
+class GreaterThanMatcher : public MatcherInterface<int> {
+ public:
+  explicit GreaterThanMatcher(int rhs) : rhs_(rhs) {}
+
+  void DescribeTo(::std::ostream* os) const override {
+    *os << "is greater than " << rhs_;
+  }
+
+  bool MatchAndExplain(int lhs, MatchResultListener* listener) const override {
+    const int diff = lhs - rhs_;
+    if (diff > 0) {
+      *listener << "which is " << diff << " more than " << rhs_;
+    } else if (diff == 0) {
+      *listener << "which is the same as " << rhs_;
+    } else {
+      *listener << "which is " << -diff << " less than " << rhs_;
+    }
+
+    return lhs > rhs_;
+  }
+
+ private:
+  int rhs_;
+};
+
+Matcher<int> GreaterThan(int n) {
+  return MakeMatcher(new GreaterThanMatcher(n));
+}
+
+// Tests for ElementsAre().
+
+TEST(ElementsAreTest, CanDescribeExpectingNoElement) {
+  Matcher<const vector<int>&> m = ElementsAre();
+  EXPECT_EQ("is empty", Describe(m));
+}
+
+TEST(ElementsAreTest, CanDescribeExpectingOneElement) {
+  Matcher<vector<int> > m = ElementsAre(Gt(5));
+  EXPECT_EQ("has 1 element that is > 5", Describe(m));
+}
+
+TEST(ElementsAreTest, CanDescribeExpectingManyElements) {
+  Matcher<list<std::string> > m = ElementsAre(StrEq("one"), "two");
+  EXPECT_EQ("has 2 elements where\n"
+            "element #0 is equal to \"one\",\n"
+            "element #1 is equal to \"two\"", Describe(m));
+}
+
+TEST(ElementsAreTest, CanDescribeNegationOfExpectingNoElement) {
+  Matcher<vector<int> > m = ElementsAre();
+  EXPECT_EQ("isn't empty", DescribeNegation(m));
+}
+
+TEST(ElementsAreTest, CanDescribeNegationOfExpectingOneElment) {
+  Matcher<const list<int>& > m = ElementsAre(Gt(5));
+  EXPECT_EQ("doesn't have 1 element, or\n"
+            "element #0 isn't > 5", DescribeNegation(m));
+}
+
+TEST(ElementsAreTest, CanDescribeNegationOfExpectingManyElements) {
+  Matcher<const list<std::string>&> m = ElementsAre("one", "two");
+  EXPECT_EQ("doesn't have 2 elements, or\n"
+            "element #0 isn't equal to \"one\", or\n"
+            "element #1 isn't equal to \"two\"", DescribeNegation(m));
+}
+
+TEST(ElementsAreTest, DoesNotExplainTrivialMatch) {
+  Matcher<const list<int>& > m = ElementsAre(1, Ne(2));
+
+  list<int> test_list;
+  test_list.push_back(1);
+  test_list.push_back(3);
+  EXPECT_EQ("", Explain(m, test_list));  // No need to explain anything.
+}
+
+TEST(ElementsAreTest, ExplainsNonTrivialMatch) {
+  Matcher<const vector<int>& > m =
+      ElementsAre(GreaterThan(1), 0, GreaterThan(2));
+
+  const int a[] = { 10, 0, 100 };
+  vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
+  EXPECT_EQ("whose element #0 matches, which is 9 more than 1,\n"
+            "and whose element #2 matches, which is 98 more than 2",
+            Explain(m, test_vector));
+}
+
+TEST(ElementsAreTest, CanExplainMismatchWrongSize) {
+  Matcher<const list<int>& > m = ElementsAre(1, 3);
+
+  list<int> test_list;
+  // No need to explain when the container is empty.
+  EXPECT_EQ("", Explain(m, test_list));
+
+  test_list.push_back(1);
+  EXPECT_EQ("which has 1 element", Explain(m, test_list));
+}
+
+TEST(ElementsAreTest, CanExplainMismatchRightSize) {
+  Matcher<const vector<int>& > m = ElementsAre(1, GreaterThan(5));
+
+  vector<int> v;
+  v.push_back(2);
+  v.push_back(1);
+  EXPECT_EQ("whose element #0 doesn't match", Explain(m, v));
+
+  v[0] = 1;
+  EXPECT_EQ("whose element #1 doesn't match, which is 4 less than 5",
+            Explain(m, v));
+}
+
+TEST(ElementsAreTest, MatchesOneElementVector) {
+  vector<std::string> test_vector;
+  test_vector.push_back("test string");
+
+  EXPECT_THAT(test_vector, ElementsAre(StrEq("test string")));
+}
+
+TEST(ElementsAreTest, MatchesOneElementList) {
+  list<std::string> test_list;
+  test_list.push_back("test string");
+
+  EXPECT_THAT(test_list, ElementsAre("test string"));
+}
+
+TEST(ElementsAreTest, MatchesThreeElementVector) {
+  vector<std::string> test_vector;
+  test_vector.push_back("one");
+  test_vector.push_back("two");
+  test_vector.push_back("three");
+
+  EXPECT_THAT(test_vector, ElementsAre("one", StrEq("two"), _));
+}
+
+TEST(ElementsAreTest, MatchesOneElementEqMatcher) {
+  vector<int> test_vector;
+  test_vector.push_back(4);
+
+  EXPECT_THAT(test_vector, ElementsAre(Eq(4)));
+}
+
+TEST(ElementsAreTest, MatchesOneElementAnyMatcher) {
+  vector<int> test_vector;
+  test_vector.push_back(4);
+
+  EXPECT_THAT(test_vector, ElementsAre(_));
+}
+
+TEST(ElementsAreTest, MatchesOneElementValue) {
+  vector<int> test_vector;
+  test_vector.push_back(4);
+
+  EXPECT_THAT(test_vector, ElementsAre(4));
+}
+
+TEST(ElementsAreTest, MatchesThreeElementsMixedMatchers) {
+  vector<int> test_vector;
+  test_vector.push_back(1);
+  test_vector.push_back(2);
+  test_vector.push_back(3);
+
+  EXPECT_THAT(test_vector, ElementsAre(1, Eq(2), _));
+}
+
+TEST(ElementsAreTest, MatchesTenElementVector) {
+  const int a[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+  vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
+
+  EXPECT_THAT(test_vector,
+              // The element list can contain values and/or matchers
+              // of different types.
+              ElementsAre(0, Ge(0), _, 3, 4, Ne(2), Eq(6), 7, 8, _));
+}
+
+TEST(ElementsAreTest, DoesNotMatchWrongSize) {
+  vector<std::string> test_vector;
+  test_vector.push_back("test string");
+  test_vector.push_back("test string");
+
+  Matcher<vector<std::string> > m = ElementsAre(StrEq("test string"));
+  EXPECT_FALSE(m.Matches(test_vector));
+}
+
+TEST(ElementsAreTest, DoesNotMatchWrongValue) {
+  vector<std::string> test_vector;
+  test_vector.push_back("other string");
+
+  Matcher<vector<std::string> > m = ElementsAre(StrEq("test string"));
+  EXPECT_FALSE(m.Matches(test_vector));
+}
+
+TEST(ElementsAreTest, DoesNotMatchWrongOrder) {
+  vector<std::string> test_vector;
+  test_vector.push_back("one");
+  test_vector.push_back("three");
+  test_vector.push_back("two");
+
+  Matcher<vector<std::string> > m =
+      ElementsAre(StrEq("one"), StrEq("two"), StrEq("three"));
+  EXPECT_FALSE(m.Matches(test_vector));
+}
+
+TEST(ElementsAreTest, WorksForNestedContainer) {
+  const char* strings[] = {
+    "Hi",
+    "world"
+  };
+
+  vector<list<char> > nested;
+  for (size_t i = 0; i < GTEST_ARRAY_SIZE_(strings); i++) {
+    nested.push_back(list<char>(strings[i], strings[i] + strlen(strings[i])));
+  }
+
+  EXPECT_THAT(nested, ElementsAre(ElementsAre('H', Ne('e')),
+                                  ElementsAre('w', 'o', _, _, 'd')));
+  EXPECT_THAT(nested, Not(ElementsAre(ElementsAre('H', 'e'),
+                                      ElementsAre('w', 'o', _, _, 'd'))));
+}
+
+TEST(ElementsAreTest, WorksWithByRefElementMatchers) {
+  int a[] = { 0, 1, 2 };
+  vector<int> v(a, a + GTEST_ARRAY_SIZE_(a));
+
+  EXPECT_THAT(v, ElementsAre(Ref(v[0]), Ref(v[1]), Ref(v[2])));
+  EXPECT_THAT(v, Not(ElementsAre(Ref(v[0]), Ref(v[1]), Ref(a[2]))));
+}
+
+TEST(ElementsAreTest, WorksWithContainerPointerUsingPointee) {
+  int a[] = { 0, 1, 2 };
+  vector<int> v(a, a + GTEST_ARRAY_SIZE_(a));
+
+  EXPECT_THAT(&v, Pointee(ElementsAre(0, 1, _)));
+  EXPECT_THAT(&v, Not(Pointee(ElementsAre(0, _, 3))));
+}
+
+TEST(ElementsAreTest, WorksWithNativeArrayPassedByReference) {
+  int array[] = { 0, 1, 2 };
+  EXPECT_THAT(array, ElementsAre(0, 1, _));
+  EXPECT_THAT(array, Not(ElementsAre(1, _, _)));
+  EXPECT_THAT(array, Not(ElementsAre(0, _)));
+}
+
+class NativeArrayPassedAsPointerAndSize {
+ public:
+  NativeArrayPassedAsPointerAndSize() {}
+
+  MOCK_METHOD2(Helper, void(int* array, int size));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(NativeArrayPassedAsPointerAndSize);
+};
+
+TEST(ElementsAreTest, WorksWithNativeArrayPassedAsPointerAndSize) {
+  int array[] = { 0, 1 };
+  ::std::tuple<int*, size_t> array_as_tuple(array, 2);
+  EXPECT_THAT(array_as_tuple, ElementsAre(0, 1));
+  EXPECT_THAT(array_as_tuple, Not(ElementsAre(0)));
+
+  NativeArrayPassedAsPointerAndSize helper;
+  EXPECT_CALL(helper, Helper(_, _))
+      .With(ElementsAre(0, 1));
+  helper.Helper(array, 2);
+}
+
+TEST(ElementsAreTest, WorksWithTwoDimensionalNativeArray) {
+  const char a2[][3] = { "hi", "lo" };
+  EXPECT_THAT(a2, ElementsAre(ElementsAre('h', 'i', '\0'),
+                              ElementsAre('l', 'o', '\0')));
+  EXPECT_THAT(a2, ElementsAre(StrEq("hi"), StrEq("lo")));
+  EXPECT_THAT(a2, ElementsAre(Not(ElementsAre('h', 'o', '\0')),
+                              ElementsAre('l', 'o', '\0')));
+}
+
+TEST(ElementsAreTest, AcceptsStringLiteral) {
+  std::string array[] = {"hi", "one", "two"};
+  EXPECT_THAT(array, ElementsAre("hi", "one", "two"));
+  EXPECT_THAT(array, Not(ElementsAre("hi", "one", "too")));
+}
+
+#ifndef _MSC_VER
+
+// The following test passes a value of type const char[] to a
+// function template that expects const T&.  Some versions of MSVC
+// generates a compiler error C2665 for that.  We believe it's a bug
+// in MSVC.  Therefore this test is #if-ed out for MSVC.
+
+// Declared here with the size unknown.  Defined AFTER the following test.
+extern const char kHi[];
+
+TEST(ElementsAreTest, AcceptsArrayWithUnknownSize) {
+  // The size of kHi is not known in this test, but ElementsAre() should
+  // still accept it.
+
+  std::string array1[] = {"hi"};
+  EXPECT_THAT(array1, ElementsAre(kHi));
+
+  std::string array2[] = {"ho"};
+  EXPECT_THAT(array2, Not(ElementsAre(kHi)));
+}
+
+const char kHi[] = "hi";
+
+#endif  // _MSC_VER
+
+TEST(ElementsAreTest, MakesCopyOfArguments) {
+  int x = 1;
+  int y = 2;
+  // This should make a copy of x and y.
+  ::testing::internal::ElementsAreMatcher<std::tuple<int, int> >
+      polymorphic_matcher = ElementsAre(x, y);
+  // Changing x and y now shouldn't affect the meaning of the above matcher.
+  x = y = 0;
+  const int array1[] = { 1, 2 };
+  EXPECT_THAT(array1, polymorphic_matcher);
+  const int array2[] = { 0, 0 };
+  EXPECT_THAT(array2, Not(polymorphic_matcher));
+}
+
+
+// Tests for ElementsAreArray().  Since ElementsAreArray() shares most
+// of the implementation with ElementsAre(), we don't test it as
+// thoroughly here.
+
+TEST(ElementsAreArrayTest, CanBeCreatedWithValueArray) {
+  const int a[] = { 1, 2, 3 };
+
+  vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
+  EXPECT_THAT(test_vector, ElementsAreArray(a));
+
+  test_vector[2] = 0;
+  EXPECT_THAT(test_vector, Not(ElementsAreArray(a)));
+}
+
+TEST(ElementsAreArrayTest, CanBeCreatedWithArraySize) {
+  const char* a[] = { "one", "two", "three" };
+
+  vector<std::string> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
+  EXPECT_THAT(test_vector, ElementsAreArray(a, GTEST_ARRAY_SIZE_(a)));
+
+  const char** p = a;
+  test_vector[0] = "1";
+  EXPECT_THAT(test_vector, Not(ElementsAreArray(p, GTEST_ARRAY_SIZE_(a))));
+}
+
+TEST(ElementsAreArrayTest, CanBeCreatedWithoutArraySize) {
+  const char* a[] = { "one", "two", "three" };
+
+  vector<std::string> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
+  EXPECT_THAT(test_vector, ElementsAreArray(a));
+
+  test_vector[0] = "1";
+  EXPECT_THAT(test_vector, Not(ElementsAreArray(a)));
+}
+
+TEST(ElementsAreArrayTest, CanBeCreatedWithMatcherArray) {
+  const Matcher<std::string> kMatcherArray[] = {StrEq("one"), StrEq("two"),
+                                                StrEq("three")};
+
+  vector<std::string> test_vector;
+  test_vector.push_back("one");
+  test_vector.push_back("two");
+  test_vector.push_back("three");
+  EXPECT_THAT(test_vector, ElementsAreArray(kMatcherArray));
+
+  test_vector.push_back("three");
+  EXPECT_THAT(test_vector, Not(ElementsAreArray(kMatcherArray)));
+}
+
+TEST(ElementsAreArrayTest, CanBeCreatedWithVector) {
+  const int a[] = { 1, 2, 3 };
+  vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
+  const vector<int> expected(a, a + GTEST_ARRAY_SIZE_(a));
+  EXPECT_THAT(test_vector, ElementsAreArray(expected));
+  test_vector.push_back(4);
+  EXPECT_THAT(test_vector, Not(ElementsAreArray(expected)));
+}
+
+
+TEST(ElementsAreArrayTest, TakesInitializerList) {
+  const int a[5] = { 1, 2, 3, 4, 5 };
+  EXPECT_THAT(a, ElementsAreArray({ 1, 2, 3, 4, 5 }));
+  EXPECT_THAT(a, Not(ElementsAreArray({ 1, 2, 3, 5, 4 })));
+  EXPECT_THAT(a, Not(ElementsAreArray({ 1, 2, 3, 4, 6 })));
+}
+
+TEST(ElementsAreArrayTest, TakesInitializerListOfCStrings) {
+  const std::string a[5] = {"a", "b", "c", "d", "e"};
+  EXPECT_THAT(a, ElementsAreArray({ "a", "b", "c", "d", "e" }));
+  EXPECT_THAT(a, Not(ElementsAreArray({ "a", "b", "c", "e", "d" })));
+  EXPECT_THAT(a, Not(ElementsAreArray({ "a", "b", "c", "d", "ef" })));
+}
+
+TEST(ElementsAreArrayTest, TakesInitializerListOfSameTypedMatchers) {
+  const int a[5] = { 1, 2, 3, 4, 5 };
+  EXPECT_THAT(a, ElementsAreArray(
+      { Eq(1), Eq(2), Eq(3), Eq(4), Eq(5) }));
+  EXPECT_THAT(a, Not(ElementsAreArray(
+      { Eq(1), Eq(2), Eq(3), Eq(4), Eq(6) })));
+}
+
+TEST(ElementsAreArrayTest,
+     TakesInitializerListOfDifferentTypedMatchers) {
+  const int a[5] = { 1, 2, 3, 4, 5 };
+  // The compiler cannot infer the type of the initializer list if its
+  // elements have different types.  We must explicitly specify the
+  // unified element type in this case.
+  EXPECT_THAT(a, ElementsAreArray<Matcher<int> >(
+      { Eq(1), Ne(-2), Ge(3), Le(4), Eq(5) }));
+  EXPECT_THAT(a, Not(ElementsAreArray<Matcher<int> >(
+      { Eq(1), Ne(-2), Ge(3), Le(4), Eq(6) })));
+}
+
+
+TEST(ElementsAreArrayTest, CanBeCreatedWithMatcherVector) {
+  const int a[] = { 1, 2, 3 };
+  const Matcher<int> kMatchers[] = { Eq(1), Eq(2), Eq(3) };
+  vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
+  const vector<Matcher<int> > expected(
+      kMatchers, kMatchers + GTEST_ARRAY_SIZE_(kMatchers));
+  EXPECT_THAT(test_vector, ElementsAreArray(expected));
+  test_vector.push_back(4);
+  EXPECT_THAT(test_vector, Not(ElementsAreArray(expected)));
+}
+
+TEST(ElementsAreArrayTest, CanBeCreatedWithIteratorRange) {
+  const int a[] = { 1, 2, 3 };
+  const vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
+  const vector<int> expected(a, a + GTEST_ARRAY_SIZE_(a));
+  EXPECT_THAT(test_vector, ElementsAreArray(expected.begin(), expected.end()));
+  // Pointers are iterators, too.
+  EXPECT_THAT(test_vector, ElementsAreArray(a, a + GTEST_ARRAY_SIZE_(a)));
+  // The empty range of NULL pointers should also be okay.
+  int* const null_int = nullptr;
+  EXPECT_THAT(test_vector, Not(ElementsAreArray(null_int, null_int)));
+  EXPECT_THAT((vector<int>()), ElementsAreArray(null_int, null_int));
+}
+
+// Since ElementsAre() and ElementsAreArray() share much of the
+// implementation, we only do a sanity test for native arrays here.
+TEST(ElementsAreArrayTest, WorksWithNativeArray) {
+  ::std::string a[] = { "hi", "ho" };
+  ::std::string b[] = { "hi", "ho" };
+
+  EXPECT_THAT(a, ElementsAreArray(b));
+  EXPECT_THAT(a, ElementsAreArray(b, 2));
+  EXPECT_THAT(a, Not(ElementsAreArray(b, 1)));
+}
+
+TEST(ElementsAreArrayTest, SourceLifeSpan) {
+  const int a[] = { 1, 2, 3 };
+  vector<int> test_vector(a, a + GTEST_ARRAY_SIZE_(a));
+  vector<int> expect(a, a + GTEST_ARRAY_SIZE_(a));
+  ElementsAreArrayMatcher<int> matcher_maker =
+      ElementsAreArray(expect.begin(), expect.end());
+  EXPECT_THAT(test_vector, matcher_maker);
+  // Changing in place the values that initialized matcher_maker should not
+  // affect matcher_maker anymore. It should have made its own copy of them.
+  typedef vector<int>::iterator Iter;
+  for (Iter it = expect.begin(); it != expect.end(); ++it) { *it += 10; }
+  EXPECT_THAT(test_vector, matcher_maker);
+  test_vector.push_back(3);
+  EXPECT_THAT(test_vector, Not(matcher_maker));
+}
+
+// Tests for the MATCHER*() macro family.
+
+// Tests that a simple MATCHER() definition works.
+
+MATCHER(IsEven, "") { return (arg % 2) == 0; }
+
+TEST(MatcherMacroTest, Works) {
+  const Matcher<int> m = IsEven();
+  EXPECT_TRUE(m.Matches(6));
+  EXPECT_FALSE(m.Matches(7));
+
+  EXPECT_EQ("is even", Describe(m));
+  EXPECT_EQ("not (is even)", DescribeNegation(m));
+  EXPECT_EQ("", Explain(m, 6));
+  EXPECT_EQ("", Explain(m, 7));
+}
+
+// This also tests that the description string can reference 'negation'.
+MATCHER(IsEven2, negation ? "is odd" : "is even") {
+  if ((arg % 2) == 0) {
+    // Verifies that we can stream to result_listener, a listener
+    // supplied by the MATCHER macro implicitly.
+    *result_listener << "OK";
+    return true;
+  } else {
+    *result_listener << "% 2 == " << (arg % 2);
+    return false;
+  }
+}
+
+// This also tests that the description string can reference matcher
+// parameters.
+MATCHER_P2(EqSumOf, x, y, std::string(negation ? "doesn't equal" : "equals") +
+                              " the sum of " + PrintToString(x) + " and " +
+                              PrintToString(y)) {
+  if (arg == (x + y)) {
+    *result_listener << "OK";
+    return true;
+  } else {
+    // Verifies that we can stream to the underlying stream of
+    // result_listener.
+    if (result_listener->stream() != nullptr) {
+      *result_listener->stream() << "diff == " << (x + y - arg);
+    }
+    return false;
+  }
+}
+
+// Tests that the matcher description can reference 'negation' and the
+// matcher parameters.
+TEST(MatcherMacroTest, DescriptionCanReferenceNegationAndParameters) {
+  const Matcher<int> m1 = IsEven2();
+  EXPECT_EQ("is even", Describe(m1));
+  EXPECT_EQ("is odd", DescribeNegation(m1));
+
+  const Matcher<int> m2 = EqSumOf(5, 9);
+  EXPECT_EQ("equals the sum of 5 and 9", Describe(m2));
+  EXPECT_EQ("doesn't equal the sum of 5 and 9", DescribeNegation(m2));
+}
+
+// Tests explaining match result in a MATCHER* macro.
+TEST(MatcherMacroTest, CanExplainMatchResult) {
+  const Matcher<int> m1 = IsEven2();
+  EXPECT_EQ("OK", Explain(m1, 4));
+  EXPECT_EQ("% 2 == 1", Explain(m1, 5));
+
+  const Matcher<int> m2 = EqSumOf(1, 2);
+  EXPECT_EQ("OK", Explain(m2, 3));
+  EXPECT_EQ("diff == -1", Explain(m2, 4));
+}
+
+// Tests that the body of MATCHER() can reference the type of the
+// value being matched.
+
+MATCHER(IsEmptyString, "") {
+  StaticAssertTypeEq< ::std::string, arg_type>();
+  return arg == "";
+}
+
+MATCHER(IsEmptyStringByRef, "") {
+  StaticAssertTypeEq<const ::std::string&, arg_type>();
+  return arg == "";
+}
+
+TEST(MatcherMacroTest, CanReferenceArgType) {
+  const Matcher< ::std::string> m1 = IsEmptyString();
+  EXPECT_TRUE(m1.Matches(""));
+
+  const Matcher<const ::std::string&> m2 = IsEmptyStringByRef();
+  EXPECT_TRUE(m2.Matches(""));
+}
+
+// Tests that MATCHER() can be used in a namespace.
+
+namespace matcher_test {
+MATCHER(IsOdd, "") { return (arg % 2) != 0; }
+}  // namespace matcher_test
+
+TEST(MatcherMacroTest, WorksInNamespace) {
+  Matcher<int> m = matcher_test::IsOdd();
+  EXPECT_FALSE(m.Matches(4));
+  EXPECT_TRUE(m.Matches(5));
+}
+
+// Tests that Value() can be used to compose matchers.
+MATCHER(IsPositiveOdd, "") {
+  return Value(arg, matcher_test::IsOdd()) && arg > 0;
+}
+
+TEST(MatcherMacroTest, CanBeComposedUsingValue) {
+  EXPECT_THAT(3, IsPositiveOdd());
+  EXPECT_THAT(4, Not(IsPositiveOdd()));
+  EXPECT_THAT(-1, Not(IsPositiveOdd()));
+}
+
+// Tests that a simple MATCHER_P() definition works.
+
+MATCHER_P(IsGreaterThan32And, n, "") { return arg > 32 && arg > n; }
+
+TEST(MatcherPMacroTest, Works) {
+  const Matcher<int> m = IsGreaterThan32And(5);
+  EXPECT_TRUE(m.Matches(36));
+  EXPECT_FALSE(m.Matches(5));
+
+  EXPECT_EQ("is greater than 32 and 5", Describe(m));
+  EXPECT_EQ("not (is greater than 32 and 5)", DescribeNegation(m));
+  EXPECT_EQ("", Explain(m, 36));
+  EXPECT_EQ("", Explain(m, 5));
+}
+
+// Tests that the description is calculated correctly from the matcher name.
+MATCHER_P(_is_Greater_Than32and_, n, "") { return arg > 32 && arg > n; }
+
+TEST(MatcherPMacroTest, GeneratesCorrectDescription) {
+  const Matcher<int> m = _is_Greater_Than32and_(5);
+
+  EXPECT_EQ("is greater than 32 and 5", Describe(m));
+  EXPECT_EQ("not (is greater than 32 and 5)", DescribeNegation(m));
+  EXPECT_EQ("", Explain(m, 36));
+  EXPECT_EQ("", Explain(m, 5));
+}
+
+// Tests that a MATCHER_P matcher can be explicitly instantiated with
+// a reference parameter type.
+
+class UncopyableFoo {
+ public:
+  explicit UncopyableFoo(char value) : value_(value) {}
+ private:
+  UncopyableFoo(const UncopyableFoo&);
+  void operator=(const UncopyableFoo&);
+
+  char value_;
+};
+
+MATCHER_P(ReferencesUncopyable, variable, "") { return &arg == &variable; }
+
+TEST(MatcherPMacroTest, WorksWhenExplicitlyInstantiatedWithReference) {
+  UncopyableFoo foo1('1'), foo2('2');
+  const Matcher<const UncopyableFoo&> m =
+      ReferencesUncopyable<const UncopyableFoo&>(foo1);
+
+  EXPECT_TRUE(m.Matches(foo1));
+  EXPECT_FALSE(m.Matches(foo2));
+
+  // We don't want the address of the parameter printed, as most
+  // likely it will just annoy the user.  If the address is
+  // interesting, the user should consider passing the parameter by
+  // pointer instead.
+  EXPECT_EQ("references uncopyable 1-byte object <31>", Describe(m));
+}
+
+
+// Tests that the body of MATCHER_Pn() can reference the parameter
+// types.
+
+MATCHER_P3(ParamTypesAreIntLongAndChar, foo, bar, baz, "") {
+  StaticAssertTypeEq<int, foo_type>();
+  StaticAssertTypeEq<long, bar_type>();  // NOLINT
+  StaticAssertTypeEq<char, baz_type>();
+  return arg == 0;
+}
+
+TEST(MatcherPnMacroTest, CanReferenceParamTypes) {
+  EXPECT_THAT(0, ParamTypesAreIntLongAndChar(10, 20L, 'a'));
+}
+
+// Tests that a MATCHER_Pn matcher can be explicitly instantiated with
+// reference parameter types.
+
+MATCHER_P2(ReferencesAnyOf, variable1, variable2, "") {
+  return &arg == &variable1 || &arg == &variable2;
+}
+
+TEST(MatcherPnMacroTest, WorksWhenExplicitlyInstantiatedWithReferences) {
+  UncopyableFoo foo1('1'), foo2('2'), foo3('3');
+  const Matcher<const UncopyableFoo&> m =
+      ReferencesAnyOf<const UncopyableFoo&, const UncopyableFoo&>(foo1, foo2);
+
+  EXPECT_TRUE(m.Matches(foo1));
+  EXPECT_TRUE(m.Matches(foo2));
+  EXPECT_FALSE(m.Matches(foo3));
+}
+
+TEST(MatcherPnMacroTest,
+     GeneratesCorretDescriptionWhenExplicitlyInstantiatedWithReferences) {
+  UncopyableFoo foo1('1'), foo2('2');
+  const Matcher<const UncopyableFoo&> m =
+      ReferencesAnyOf<const UncopyableFoo&, const UncopyableFoo&>(foo1, foo2);
+
+  // We don't want the addresses of the parameters printed, as most
+  // likely they will just annoy the user.  If the addresses are
+  // interesting, the user should consider passing the parameters by
+  // pointers instead.
+  EXPECT_EQ("references any of (1-byte object <31>, 1-byte object <32>)",
+            Describe(m));
+}
+
+// Tests that a simple MATCHER_P2() definition works.
+
+MATCHER_P2(IsNotInClosedRange, low, hi, "") { return arg < low || arg > hi; }
+
+TEST(MatcherPnMacroTest, Works) {
+  const Matcher<const long&> m = IsNotInClosedRange(10, 20);  // NOLINT
+  EXPECT_TRUE(m.Matches(36L));
+  EXPECT_FALSE(m.Matches(15L));
+
+  EXPECT_EQ("is not in closed range (10, 20)", Describe(m));
+  EXPECT_EQ("not (is not in closed range (10, 20))", DescribeNegation(m));
+  EXPECT_EQ("", Explain(m, 36L));
+  EXPECT_EQ("", Explain(m, 15L));
+}
+
+// Tests that MATCHER*() definitions can be overloaded on the number
+// of parameters; also tests MATCHER_Pn() where n >= 3.
+
+MATCHER(EqualsSumOf, "") { return arg == 0; }
+MATCHER_P(EqualsSumOf, a, "") { return arg == a; }
+MATCHER_P2(EqualsSumOf, a, b, "") { return arg == a + b; }
+MATCHER_P3(EqualsSumOf, a, b, c, "") { return arg == a + b + c; }
+MATCHER_P4(EqualsSumOf, a, b, c, d, "") { return arg == a + b + c + d; }
+MATCHER_P5(EqualsSumOf, a, b, c, d, e, "") { return arg == a + b + c + d + e; }
+MATCHER_P6(EqualsSumOf, a, b, c, d, e, f, "") {
+  return arg == a + b + c + d + e + f;
+}
+MATCHER_P7(EqualsSumOf, a, b, c, d, e, f, g, "") {
+  return arg == a + b + c + d + e + f + g;
+}
+MATCHER_P8(EqualsSumOf, a, b, c, d, e, f, g, h, "") {
+  return arg == a + b + c + d + e + f + g + h;
+}
+MATCHER_P9(EqualsSumOf, a, b, c, d, e, f, g, h, i, "") {
+  return arg == a + b + c + d + e + f + g + h + i;
+}
+MATCHER_P10(EqualsSumOf, a, b, c, d, e, f, g, h, i, j, "") {
+  return arg == a + b + c + d + e + f + g + h + i + j;
+}
+
+TEST(MatcherPnMacroTest, CanBeOverloadedOnNumberOfParameters) {
+  EXPECT_THAT(0, EqualsSumOf());
+  EXPECT_THAT(1, EqualsSumOf(1));
+  EXPECT_THAT(12, EqualsSumOf(10, 2));
+  EXPECT_THAT(123, EqualsSumOf(100, 20, 3));
+  EXPECT_THAT(1234, EqualsSumOf(1000, 200, 30, 4));
+  EXPECT_THAT(12345, EqualsSumOf(10000, 2000, 300, 40, 5));
+  EXPECT_THAT("abcdef",
+              EqualsSumOf(::std::string("a"), 'b', 'c', "d", "e", 'f'));
+  EXPECT_THAT("abcdefg",
+              EqualsSumOf(::std::string("a"), 'b', 'c', "d", "e", 'f', 'g'));
+  EXPECT_THAT("abcdefgh",
+              EqualsSumOf(::std::string("a"), 'b', 'c', "d", "e", 'f', 'g',
+                          "h"));
+  EXPECT_THAT("abcdefghi",
+              EqualsSumOf(::std::string("a"), 'b', 'c', "d", "e", 'f', 'g',
+                          "h", 'i'));
+  EXPECT_THAT("abcdefghij",
+              EqualsSumOf(::std::string("a"), 'b', 'c', "d", "e", 'f', 'g',
+                          "h", 'i', ::std::string("j")));
+
+  EXPECT_THAT(1, Not(EqualsSumOf()));
+  EXPECT_THAT(-1, Not(EqualsSumOf(1)));
+  EXPECT_THAT(-12, Not(EqualsSumOf(10, 2)));
+  EXPECT_THAT(-123, Not(EqualsSumOf(100, 20, 3)));
+  EXPECT_THAT(-1234, Not(EqualsSumOf(1000, 200, 30, 4)));
+  EXPECT_THAT(-12345, Not(EqualsSumOf(10000, 2000, 300, 40, 5)));
+  EXPECT_THAT("abcdef ",
+              Not(EqualsSumOf(::std::string("a"), 'b', 'c', "d", "e", 'f')));
+  EXPECT_THAT("abcdefg ",
+              Not(EqualsSumOf(::std::string("a"), 'b', 'c', "d", "e", 'f',
+                              'g')));
+  EXPECT_THAT("abcdefgh ",
+              Not(EqualsSumOf(::std::string("a"), 'b', 'c', "d", "e", 'f', 'g',
+                              "h")));
+  EXPECT_THAT("abcdefghi ",
+              Not(EqualsSumOf(::std::string("a"), 'b', 'c', "d", "e", 'f', 'g',
+                              "h", 'i')));
+  EXPECT_THAT("abcdefghij ",
+              Not(EqualsSumOf(::std::string("a"), 'b', 'c', "d", "e", 'f', 'g',
+                              "h", 'i', ::std::string("j"))));
+}
+
+// Tests that a MATCHER_Pn() definition can be instantiated with any
+// compatible parameter types.
+TEST(MatcherPnMacroTest, WorksForDifferentParameterTypes) {
+  EXPECT_THAT(123, EqualsSumOf(100L, 20, static_cast<char>(3)));
+  EXPECT_THAT("abcd", EqualsSumOf(::std::string("a"), "b", 'c', "d"));
+
+  EXPECT_THAT(124, Not(EqualsSumOf(100L, 20, static_cast<char>(3))));
+  EXPECT_THAT("abcde", Not(EqualsSumOf(::std::string("a"), "b", 'c', "d")));
+}
+
+// Tests that the matcher body can promote the parameter types.
+
+MATCHER_P2(EqConcat, prefix, suffix, "") {
+  // The following lines promote the two parameters to desired types.
+  std::string prefix_str(prefix);
+  char suffix_char = static_cast<char>(suffix);
+  return arg == prefix_str + suffix_char;
+}
+
+TEST(MatcherPnMacroTest, SimpleTypePromotion) {
+  Matcher<std::string> no_promo =
+      EqConcat(std::string("foo"), 't');
+  Matcher<const std::string&> promo =
+      EqConcat("foo", static_cast<int>('t'));
+  EXPECT_FALSE(no_promo.Matches("fool"));
+  EXPECT_FALSE(promo.Matches("fool"));
+  EXPECT_TRUE(no_promo.Matches("foot"));
+  EXPECT_TRUE(promo.Matches("foot"));
+}
+
+// Verifies the type of a MATCHER*.
+
+TEST(MatcherPnMacroTest, TypesAreCorrect) {
+  // EqualsSumOf() must be assignable to a EqualsSumOfMatcher variable.
+  EqualsSumOfMatcher a0 = EqualsSumOf();
+
+  // EqualsSumOf(1) must be assignable to a EqualsSumOfMatcherP variable.
+  EqualsSumOfMatcherP<int> a1 = EqualsSumOf(1);
+
+  // EqualsSumOf(p1, ..., pk) must be assignable to a EqualsSumOfMatcherPk
+  // variable, and so on.
+  EqualsSumOfMatcherP2<int, char> a2 = EqualsSumOf(1, '2');
+  EqualsSumOfMatcherP3<int, int, char> a3 = EqualsSumOf(1, 2, '3');
+  EqualsSumOfMatcherP4<int, int, int, char> a4 = EqualsSumOf(1, 2, 3, '4');
+  EqualsSumOfMatcherP5<int, int, int, int, char> a5 =
+      EqualsSumOf(1, 2, 3, 4, '5');
+  EqualsSumOfMatcherP6<int, int, int, int, int, char> a6 =
+      EqualsSumOf(1, 2, 3, 4, 5, '6');
+  EqualsSumOfMatcherP7<int, int, int, int, int, int, char> a7 =
+      EqualsSumOf(1, 2, 3, 4, 5, 6, '7');
+  EqualsSumOfMatcherP8<int, int, int, int, int, int, int, char> a8 =
+      EqualsSumOf(1, 2, 3, 4, 5, 6, 7, '8');
+  EqualsSumOfMatcherP9<int, int, int, int, int, int, int, int, char> a9 =
+      EqualsSumOf(1, 2, 3, 4, 5, 6, 7, 8, '9');
+  EqualsSumOfMatcherP10<int, int, int, int, int, int, int, int, int, char> a10 =
+      EqualsSumOf(1, 2, 3, 4, 5, 6, 7, 8, 9, '0');
+
+  // Avoid "unused variable" warnings.
+  (void)a0;
+  (void)a1;
+  (void)a2;
+  (void)a3;
+  (void)a4;
+  (void)a5;
+  (void)a6;
+  (void)a7;
+  (void)a8;
+  (void)a9;
+  (void)a10;
+}
+
+// Tests that matcher-typed parameters can be used in Value() inside a
+// MATCHER_Pn definition.
+
+// Succeeds if arg matches exactly 2 of the 3 matchers.
+MATCHER_P3(TwoOf, m1, m2, m3, "") {
+  const int count = static_cast<int>(Value(arg, m1))
+      + static_cast<int>(Value(arg, m2)) + static_cast<int>(Value(arg, m3));
+  return count == 2;
+}
+
+TEST(MatcherPnMacroTest, CanUseMatcherTypedParameterInValue) {
+  EXPECT_THAT(42, TwoOf(Gt(0), Lt(50), Eq(10)));
+  EXPECT_THAT(0, Not(TwoOf(Gt(-1), Lt(1), Eq(0))));
+}
+
+// Tests Contains().
+
+TEST(ContainsTest, ListMatchesWhenElementIsInContainer) {
+  list<int> some_list;
+  some_list.push_back(3);
+  some_list.push_back(1);
+  some_list.push_back(2);
+  EXPECT_THAT(some_list, Contains(1));
+  EXPECT_THAT(some_list, Contains(Gt(2.5)));
+  EXPECT_THAT(some_list, Contains(Eq(2.0f)));
+
+  list<std::string> another_list;
+  another_list.push_back("fee");
+  another_list.push_back("fie");
+  another_list.push_back("foe");
+  another_list.push_back("fum");
+  EXPECT_THAT(another_list, Contains(std::string("fee")));
+}
+
+TEST(ContainsTest, ListDoesNotMatchWhenElementIsNotInContainer) {
+  list<int> some_list;
+  some_list.push_back(3);
+  some_list.push_back(1);
+  EXPECT_THAT(some_list, Not(Contains(4)));
+}
+
+TEST(ContainsTest, SetMatchesWhenElementIsInContainer) {
+  set<int> some_set;
+  some_set.insert(3);
+  some_set.insert(1);
+  some_set.insert(2);
+  EXPECT_THAT(some_set, Contains(Eq(1.0)));
+  EXPECT_THAT(some_set, Contains(Eq(3.0f)));
+  EXPECT_THAT(some_set, Contains(2));
+
+  set<const char*> another_set;
+  another_set.insert("fee");
+  another_set.insert("fie");
+  another_set.insert("foe");
+  another_set.insert("fum");
+  EXPECT_THAT(another_set, Contains(Eq(std::string("fum"))));
+}
+
+TEST(ContainsTest, SetDoesNotMatchWhenElementIsNotInContainer) {
+  set<int> some_set;
+  some_set.insert(3);
+  some_set.insert(1);
+  EXPECT_THAT(some_set, Not(Contains(4)));
+
+  set<const char*> c_string_set;
+  c_string_set.insert("hello");
+  EXPECT_THAT(c_string_set, Not(Contains(std::string("hello").c_str())));
+}
+
+TEST(ContainsTest, ExplainsMatchResultCorrectly) {
+  const int a[2] = { 1, 2 };
+  Matcher<const int (&)[2]> m = Contains(2);
+  EXPECT_EQ("whose element #1 matches", Explain(m, a));
+
+  m = Contains(3);
+  EXPECT_EQ("", Explain(m, a));
+
+  m = Contains(GreaterThan(0));
+  EXPECT_EQ("whose element #0 matches, which is 1 more than 0", Explain(m, a));
+
+  m = Contains(GreaterThan(10));
+  EXPECT_EQ("", Explain(m, a));
+}
+
+TEST(ContainsTest, DescribesItselfCorrectly) {
+  Matcher<vector<int> > m = Contains(1);
+  EXPECT_EQ("contains at least one element that is equal to 1", Describe(m));
+
+  Matcher<vector<int> > m2 = Not(m);
+  EXPECT_EQ("doesn't contain any element that is equal to 1", Describe(m2));
+}
+
+TEST(ContainsTest, MapMatchesWhenElementIsInContainer) {
+  map<const char*, int> my_map;
+  const char* bar = "a string";
+  my_map[bar] = 2;
+  EXPECT_THAT(my_map, Contains(pair<const char* const, int>(bar, 2)));
+
+  map<std::string, int> another_map;
+  another_map["fee"] = 1;
+  another_map["fie"] = 2;
+  another_map["foe"] = 3;
+  another_map["fum"] = 4;
+  EXPECT_THAT(another_map,
+              Contains(pair<const std::string, int>(std::string("fee"), 1)));
+  EXPECT_THAT(another_map, Contains(pair<const std::string, int>("fie", 2)));
+}
+
+TEST(ContainsTest, MapDoesNotMatchWhenElementIsNotInContainer) {
+  map<int, int> some_map;
+  some_map[1] = 11;
+  some_map[2] = 22;
+  EXPECT_THAT(some_map, Not(Contains(pair<const int, int>(2, 23))));
+}
+
+TEST(ContainsTest, ArrayMatchesWhenElementIsInContainer) {
+  const char* string_array[] = { "fee", "fie", "foe", "fum" };
+  EXPECT_THAT(string_array, Contains(Eq(std::string("fum"))));
+}
+
+TEST(ContainsTest, ArrayDoesNotMatchWhenElementIsNotInContainer) {
+  int int_array[] = { 1, 2, 3, 4 };
+  EXPECT_THAT(int_array, Not(Contains(5)));
+}
+
+TEST(ContainsTest, AcceptsMatcher) {
+  const int a[] = { 1, 2, 3 };
+  EXPECT_THAT(a, Contains(Gt(2)));
+  EXPECT_THAT(a, Not(Contains(Gt(4))));
+}
+
+TEST(ContainsTest, WorksForNativeArrayAsTuple) {
+  const int a[] = { 1, 2 };
+  const int* const pointer = a;
+  EXPECT_THAT(std::make_tuple(pointer, 2), Contains(1));
+  EXPECT_THAT(std::make_tuple(pointer, 2), Not(Contains(Gt(3))));
+}
+
+TEST(ContainsTest, WorksForTwoDimensionalNativeArray) {
+  int a[][3] = { { 1, 2, 3 }, { 4, 5, 6 } };
+  EXPECT_THAT(a, Contains(ElementsAre(4, 5, 6)));
+  EXPECT_THAT(a, Contains(Contains(5)));
+  EXPECT_THAT(a, Not(Contains(ElementsAre(3, 4, 5))));
+  EXPECT_THAT(a, Contains(Not(Contains(5))));
+}
+
+TEST(AllOfArrayTest, BasicForms) {
+  // Iterator
+  std::vector<int> v0{};
+  std::vector<int> v1{1};
+  std::vector<int> v2{2, 3};
+  std::vector<int> v3{4, 4, 4};
+  EXPECT_THAT(0, AllOfArray(v0.begin(), v0.end()));
+  EXPECT_THAT(1, AllOfArray(v1.begin(), v1.end()));
+  EXPECT_THAT(2, Not(AllOfArray(v1.begin(), v1.end())));
+  EXPECT_THAT(3, Not(AllOfArray(v2.begin(), v2.end())));
+  EXPECT_THAT(4, AllOfArray(v3.begin(), v3.end()));
+  // Pointer +  size
+  int ar[6] = {1, 2, 3, 4, 4, 4};
+  EXPECT_THAT(0, AllOfArray(ar, 0));
+  EXPECT_THAT(1, AllOfArray(ar, 1));
+  EXPECT_THAT(2, Not(AllOfArray(ar, 1)));
+  EXPECT_THAT(3, Not(AllOfArray(ar + 1, 3)));
+  EXPECT_THAT(4, AllOfArray(ar + 3, 3));
+  // Array
+  // int ar0[0];  Not usable
+  int ar1[1] = {1};
+  int ar2[2] = {2, 3};
+  int ar3[3] = {4, 4, 4};
+  // EXPECT_THAT(0, Not(AllOfArray(ar0)));  // Cannot work
+  EXPECT_THAT(1, AllOfArray(ar1));
+  EXPECT_THAT(2, Not(AllOfArray(ar1)));
+  EXPECT_THAT(3, Not(AllOfArray(ar2)));
+  EXPECT_THAT(4, AllOfArray(ar3));
+  // Container
+  EXPECT_THAT(0, AllOfArray(v0));
+  EXPECT_THAT(1, AllOfArray(v1));
+  EXPECT_THAT(2, Not(AllOfArray(v1)));
+  EXPECT_THAT(3, Not(AllOfArray(v2)));
+  EXPECT_THAT(4, AllOfArray(v3));
+  // Initializer
+  EXPECT_THAT(0, AllOfArray<int>({}));  // Requires template arg.
+  EXPECT_THAT(1, AllOfArray({1}));
+  EXPECT_THAT(2, Not(AllOfArray({1})));
+  EXPECT_THAT(3, Not(AllOfArray({2, 3})));
+  EXPECT_THAT(4, AllOfArray({4, 4, 4}));
+}
+
+TEST(AllOfArrayTest, Matchers) {
+  // vector
+  std::vector<Matcher<int>> matchers{Ge(1), Lt(2)};
+  EXPECT_THAT(0, Not(AllOfArray(matchers)));
+  EXPECT_THAT(1, AllOfArray(matchers));
+  EXPECT_THAT(2, Not(AllOfArray(matchers)));
+  // initializer_list
+  EXPECT_THAT(0, Not(AllOfArray({Ge(0), Ge(1)})));
+  EXPECT_THAT(1, AllOfArray({Ge(0), Ge(1)}));
+}
+
+TEST(AnyOfArrayTest, BasicForms) {
+  // Iterator
+  std::vector<int> v0{};
+  std::vector<int> v1{1};
+  std::vector<int> v2{2, 3};
+  EXPECT_THAT(0, Not(AnyOfArray(v0.begin(), v0.end())));
+  EXPECT_THAT(1, AnyOfArray(v1.begin(), v1.end()));
+  EXPECT_THAT(2, Not(AnyOfArray(v1.begin(), v1.end())));
+  EXPECT_THAT(3, AnyOfArray(v2.begin(), v2.end()));
+  EXPECT_THAT(4, Not(AnyOfArray(v2.begin(), v2.end())));
+  // Pointer +  size
+  int ar[3] = {1, 2, 3};
+  EXPECT_THAT(0, Not(AnyOfArray(ar, 0)));
+  EXPECT_THAT(1, AnyOfArray(ar, 1));
+  EXPECT_THAT(2, Not(AnyOfArray(ar, 1)));
+  EXPECT_THAT(3, AnyOfArray(ar + 1, 2));
+  EXPECT_THAT(4, Not(AnyOfArray(ar + 1, 2)));
+  // Array
+  // int ar0[0];  Not usable
+  int ar1[1] = {1};
+  int ar2[2] = {2, 3};
+  // EXPECT_THAT(0, Not(AnyOfArray(ar0)));  // Cannot work
+  EXPECT_THAT(1, AnyOfArray(ar1));
+  EXPECT_THAT(2, Not(AnyOfArray(ar1)));
+  EXPECT_THAT(3, AnyOfArray(ar2));
+  EXPECT_THAT(4, Not(AnyOfArray(ar2)));
+  // Container
+  EXPECT_THAT(0, Not(AnyOfArray(v0)));
+  EXPECT_THAT(1, AnyOfArray(v1));
+  EXPECT_THAT(2, Not(AnyOfArray(v1)));
+  EXPECT_THAT(3, AnyOfArray(v2));
+  EXPECT_THAT(4, Not(AnyOfArray(v2)));
+  // Initializer
+  EXPECT_THAT(0, Not(AnyOfArray<int>({})));  // Requires template arg.
+  EXPECT_THAT(1, AnyOfArray({1}));
+  EXPECT_THAT(2, Not(AnyOfArray({1})));
+  EXPECT_THAT(3, AnyOfArray({2, 3}));
+  EXPECT_THAT(4, Not(AnyOfArray({2, 3})));
+}
+
+TEST(AnyOfArrayTest, Matchers) {
+  // We negate test AllOfArrayTest.Matchers.
+  // vector
+  std::vector<Matcher<int>> matchers{Lt(1), Ge(2)};
+  EXPECT_THAT(0, AnyOfArray(matchers));
+  EXPECT_THAT(1, Not(AnyOfArray(matchers)));
+  EXPECT_THAT(2, AnyOfArray(matchers));
+  // initializer_list
+  EXPECT_THAT(0, AnyOfArray({Lt(0), Lt(1)}));
+  EXPECT_THAT(1, Not(AllOfArray({Lt(0), Lt(1)})));
+}
+
+TEST(AnyOfArrayTest, ExplainsMatchResultCorrectly) {
+  // AnyOfArray and AllOfArry use the same underlying template-template,
+  // thus it is sufficient to test one here.
+  const std::vector<int> v0{};
+  const std::vector<int> v1{1};
+  const std::vector<int> v2{2, 3};
+  const Matcher<int> m0 = AnyOfArray(v0);
+  const Matcher<int> m1 = AnyOfArray(v1);
+  const Matcher<int> m2 = AnyOfArray(v2);
+  EXPECT_EQ("", Explain(m0, 0));
+  EXPECT_EQ("", Explain(m1, 1));
+  EXPECT_EQ("", Explain(m1, 2));
+  EXPECT_EQ("", Explain(m2, 3));
+  EXPECT_EQ("", Explain(m2, 4));
+  EXPECT_EQ("()", Describe(m0));
+  EXPECT_EQ("(is equal to 1)", Describe(m1));
+  EXPECT_EQ("(is equal to 2) or (is equal to 3)", Describe(m2));
+  EXPECT_EQ("()", DescribeNegation(m0));
+  EXPECT_EQ("(isn't equal to 1)", DescribeNegation(m1));
+  EXPECT_EQ("(isn't equal to 2) and (isn't equal to 3)", DescribeNegation(m2));
+  // Explain with matchers
+  const Matcher<int> g1 = AnyOfArray({GreaterThan(1)});
+  const Matcher<int> g2 = AnyOfArray({GreaterThan(1), GreaterThan(2)});
+  // Explains the first positiv match and all prior negative matches...
+  EXPECT_EQ("which is 1 less than 1", Explain(g1, 0));
+  EXPECT_EQ("which is the same as 1", Explain(g1, 1));
+  EXPECT_EQ("which is 1 more than 1", Explain(g1, 2));
+  EXPECT_EQ("which is 1 less than 1, and which is 2 less than 2",
+            Explain(g2, 0));
+  EXPECT_EQ("which is the same as 1, and which is 1 less than 2",
+            Explain(g2, 1));
+  EXPECT_EQ("which is 1 more than 1",  // Only the first
+            Explain(g2, 2));
+}
+
+TEST(AllOfTest, HugeMatcher) {
+  // Verify that using AllOf with many arguments doesn't cause
+  // the compiler to exceed template instantiation depth limit.
+  EXPECT_THAT(0, testing::AllOf(_, _, _, _, _, _, _, _, _,
+                                testing::AllOf(_, _, _, _, _, _, _, _, _, _)));
+}
+
+TEST(AnyOfTest, HugeMatcher) {
+  // Verify that using AnyOf with many arguments doesn't cause
+  // the compiler to exceed template instantiation depth limit.
+  EXPECT_THAT(0, testing::AnyOf(_, _, _, _, _, _, _, _, _,
+                                testing::AnyOf(_, _, _, _, _, _, _, _, _, _)));
+}
+
+namespace adl_test {
+
+// Verifies that the implementation of ::testing::AllOf and ::testing::AnyOf
+// don't issue unqualified recursive calls.  If they do, the argument dependent
+// name lookup will cause AllOf/AnyOf in the 'adl_test' namespace to be found
+// as a candidate and the compilation will break due to an ambiguous overload.
+
+// The matcher must be in the same namespace as AllOf/AnyOf to make argument
+// dependent lookup find those.
+MATCHER(M, "") { return true; }
+
+template <typename T1, typename T2>
+bool AllOf(const T1& /*t1*/, const T2& /*t2*/) { return true; }
+
+TEST(AllOfTest, DoesNotCallAllOfUnqualified) {
+  EXPECT_THAT(42, testing::AllOf(
+      M(), M(), M(), M(), M(), M(), M(), M(), M(), M()));
+}
+
+template <typename T1, typename T2> bool
+AnyOf(const T1& t1, const T2& t2) { return true; }
+
+TEST(AnyOfTest, DoesNotCallAnyOfUnqualified) {
+  EXPECT_THAT(42, testing::AnyOf(
+      M(), M(), M(), M(), M(), M(), M(), M(), M(), M()));
+}
+
+}  // namespace adl_test
+
+
+TEST(AllOfTest, WorksOnMoveOnlyType) {
+  std::unique_ptr<int> p(new int(3));
+  EXPECT_THAT(p, AllOf(Pointee(Eq(3)), Pointee(Gt(0)), Pointee(Lt(5))));
+  EXPECT_THAT(p, Not(AllOf(Pointee(Eq(3)), Pointee(Gt(0)), Pointee(Lt(3)))));
+}
+
+TEST(AnyOfTest, WorksOnMoveOnlyType) {
+  std::unique_ptr<int> p(new int(3));
+  EXPECT_THAT(p, AnyOf(Pointee(Eq(5)), Pointee(Lt(0)), Pointee(Lt(5))));
+  EXPECT_THAT(p, Not(AnyOf(Pointee(Eq(5)), Pointee(Lt(0)), Pointee(Gt(5)))));
+}
+
+MATCHER(IsNotNull, "") {
+  return arg != nullptr;
+}
+
+// Verifies that a matcher defined using MATCHER() can work on
+// move-only types.
+TEST(MatcherMacroTest, WorksOnMoveOnlyType) {
+  std::unique_ptr<int> p(new int(3));
+  EXPECT_THAT(p, IsNotNull());
+  EXPECT_THAT(std::unique_ptr<int>(), Not(IsNotNull()));
+}
+
+MATCHER_P(UniquePointee, pointee, "") {
+  return *arg == pointee;
+}
+
+// Verifies that a matcher defined using MATCHER_P*() can work on
+// move-only types.
+TEST(MatcherPMacroTest, WorksOnMoveOnlyType) {
+  std::unique_ptr<int> p(new int(3));
+  EXPECT_THAT(p, UniquePointee(3));
+  EXPECT_THAT(p, Not(UniquePointee(2)));
+}
+
+
+}  // namespace
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-internal-utils_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-internal-utils_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d000e6924cdf8f5a9a40714f801cffff0efec9c1
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-internal-utils_test.cc
@@ -0,0 +1,733 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests the internal utilities.
+
+#include "gmock/internal/gmock-internal-utils.h"
+
+#include <stdlib.h>
+
+#include <map>
+#include <memory>
+#include <sstream>
+#include <string>
+#include <type_traits>
+#include <vector>
+
+#include "gmock/gmock.h"
+#include "gmock/internal/gmock-port.h"
+#include "gtest/gtest-spi.h"
+#include "gtest/gtest.h"
+
+// Indicates that this translation unit is part of Google Test's
+// implementation.  It must come before gtest-internal-inl.h is
+// included, or there will be a compiler error.  This trick is to
+// prevent a user from accidentally including gtest-internal-inl.h in
+// their code.
+#define GTEST_IMPLEMENTATION_ 1
+#include "src/gtest-internal-inl.h"
+#undef GTEST_IMPLEMENTATION_
+
+#if GTEST_OS_CYGWIN
+# include <sys/types.h>  // For ssize_t. NOLINT
+#endif
+
+namespace proto2 {
+class Message;
+}  // namespace proto2
+
+namespace testing {
+namespace internal {
+
+namespace {
+
+TEST(JoinAsTupleTest, JoinsEmptyTuple) {
+  EXPECT_EQ("", JoinAsTuple(Strings()));
+}
+
+TEST(JoinAsTupleTest, JoinsOneTuple) {
+  const char* fields[] = {"1"};
+  EXPECT_EQ("1", JoinAsTuple(Strings(fields, fields + 1)));
+}
+
+TEST(JoinAsTupleTest, JoinsTwoTuple) {
+  const char* fields[] = {"1", "a"};
+  EXPECT_EQ("(1, a)", JoinAsTuple(Strings(fields, fields + 2)));
+}
+
+TEST(JoinAsTupleTest, JoinsTenTuple) {
+  const char* fields[] = {"1", "2", "3", "4", "5", "6", "7", "8", "9", "10"};
+  EXPECT_EQ("(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)",
+            JoinAsTuple(Strings(fields, fields + 10)));
+}
+
+TEST(ConvertIdentifierNameToWordsTest, WorksWhenNameContainsNoWord) {
+  EXPECT_EQ("", ConvertIdentifierNameToWords(""));
+  EXPECT_EQ("", ConvertIdentifierNameToWords("_"));
+  EXPECT_EQ("", ConvertIdentifierNameToWords("__"));
+}
+
+TEST(ConvertIdentifierNameToWordsTest, WorksWhenNameContainsDigits) {
+  EXPECT_EQ("1", ConvertIdentifierNameToWords("_1"));
+  EXPECT_EQ("2", ConvertIdentifierNameToWords("2_"));
+  EXPECT_EQ("34", ConvertIdentifierNameToWords("_34_"));
+  EXPECT_EQ("34 56", ConvertIdentifierNameToWords("_34_56"));
+}
+
+TEST(ConvertIdentifierNameToWordsTest, WorksWhenNameContainsCamelCaseWords) {
+  EXPECT_EQ("a big word", ConvertIdentifierNameToWords("ABigWord"));
+  EXPECT_EQ("foo bar", ConvertIdentifierNameToWords("FooBar"));
+  EXPECT_EQ("foo", ConvertIdentifierNameToWords("Foo_"));
+  EXPECT_EQ("foo bar", ConvertIdentifierNameToWords("_Foo_Bar_"));
+  EXPECT_EQ("foo and bar", ConvertIdentifierNameToWords("_Foo__And_Bar"));
+}
+
+TEST(ConvertIdentifierNameToWordsTest, WorksWhenNameContains_SeparatedWords) {
+  EXPECT_EQ("foo bar", ConvertIdentifierNameToWords("foo_bar"));
+  EXPECT_EQ("foo", ConvertIdentifierNameToWords("_foo_"));
+  EXPECT_EQ("foo bar", ConvertIdentifierNameToWords("_foo_bar_"));
+  EXPECT_EQ("foo and bar", ConvertIdentifierNameToWords("_foo__and_bar"));
+}
+
+TEST(ConvertIdentifierNameToWordsTest, WorksWhenNameIsMixture) {
+  EXPECT_EQ("foo bar 123", ConvertIdentifierNameToWords("Foo_bar123"));
+  EXPECT_EQ("chapter 11 section 1",
+            ConvertIdentifierNameToWords("_Chapter11Section_1_"));
+}
+
+TEST(PointeeOfTest, WorksForSmartPointers) {
+  EXPECT_TRUE(
+      (std::is_same<int, PointeeOf<std::unique_ptr<int>>::type>::value));
+  EXPECT_TRUE(
+      (std::is_same<std::string,
+                    PointeeOf<std::shared_ptr<std::string>>::type>::value));
+}
+
+TEST(PointeeOfTest, WorksForRawPointers) {
+  EXPECT_TRUE((std::is_same<int, PointeeOf<int*>::type>::value));
+  EXPECT_TRUE((std::is_same<const char, PointeeOf<const char*>::type>::value));
+  EXPECT_TRUE((std::is_void<PointeeOf<void*>::type>::value));
+}
+
+TEST(GetRawPointerTest, WorksForSmartPointers) {
+  const char* const raw_p1 = new const char('a');  // NOLINT
+  const std::unique_ptr<const char> p1(raw_p1);
+  EXPECT_EQ(raw_p1, GetRawPointer(p1));
+  double* const raw_p2 = new double(2.5);  // NOLINT
+  const std::shared_ptr<double> p2(raw_p2);
+  EXPECT_EQ(raw_p2, GetRawPointer(p2));
+}
+
+TEST(GetRawPointerTest, WorksForRawPointers) {
+  int* p = nullptr;
+  EXPECT_TRUE(nullptr == GetRawPointer(p));
+  int n = 1;
+  EXPECT_EQ(&n, GetRawPointer(&n));
+}
+
+// Tests KindOf<T>.
+
+class Base {};
+class Derived : public Base {};
+
+TEST(KindOfTest, Bool) {
+  EXPECT_EQ(kBool, GMOCK_KIND_OF_(bool));  // NOLINT
+}
+
+TEST(KindOfTest, Integer) {
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(char));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(signed char));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(unsigned char));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(short));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(unsigned short));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(int));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(unsigned int));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(long));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(unsigned long));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(wchar_t));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(Int64));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(UInt64));  // NOLINT
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(size_t));  // NOLINT
+#if GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_CYGWIN
+  // ssize_t is not defined on Windows and possibly some other OSes.
+  EXPECT_EQ(kInteger, GMOCK_KIND_OF_(ssize_t));  // NOLINT
+#endif
+}
+
+TEST(KindOfTest, FloatingPoint) {
+  EXPECT_EQ(kFloatingPoint, GMOCK_KIND_OF_(float));  // NOLINT
+  EXPECT_EQ(kFloatingPoint, GMOCK_KIND_OF_(double));  // NOLINT
+  EXPECT_EQ(kFloatingPoint, GMOCK_KIND_OF_(long double));  // NOLINT
+}
+
+TEST(KindOfTest, Other) {
+  EXPECT_EQ(kOther, GMOCK_KIND_OF_(void*));  // NOLINT
+  EXPECT_EQ(kOther, GMOCK_KIND_OF_(char**));  // NOLINT
+  EXPECT_EQ(kOther, GMOCK_KIND_OF_(Base));  // NOLINT
+}
+
+// Tests LosslessArithmeticConvertible<T, U>.
+
+TEST(LosslessArithmeticConvertibleTest, BoolToBool) {
+  EXPECT_TRUE((LosslessArithmeticConvertible<bool, bool>::value));
+}
+
+TEST(LosslessArithmeticConvertibleTest, BoolToInteger) {
+  EXPECT_TRUE((LosslessArithmeticConvertible<bool, char>::value));
+  EXPECT_TRUE((LosslessArithmeticConvertible<bool, int>::value));
+  EXPECT_TRUE(
+      (LosslessArithmeticConvertible<bool, unsigned long>::value));  // NOLINT
+}
+
+TEST(LosslessArithmeticConvertibleTest, BoolToFloatingPoint) {
+  EXPECT_TRUE((LosslessArithmeticConvertible<bool, float>::value));
+  EXPECT_TRUE((LosslessArithmeticConvertible<bool, double>::value));
+}
+
+TEST(LosslessArithmeticConvertibleTest, IntegerToBool) {
+  EXPECT_FALSE((LosslessArithmeticConvertible<unsigned char, bool>::value));
+  EXPECT_FALSE((LosslessArithmeticConvertible<int, bool>::value));
+}
+
+TEST(LosslessArithmeticConvertibleTest, IntegerToInteger) {
+  // Unsigned => larger signed is fine.
+  EXPECT_TRUE((LosslessArithmeticConvertible<unsigned char, int>::value));
+
+  // Unsigned => larger unsigned is fine.
+  EXPECT_TRUE(
+      (LosslessArithmeticConvertible<unsigned short, UInt64>::value)); // NOLINT
+
+  // Signed => unsigned is not fine.
+  EXPECT_FALSE((LosslessArithmeticConvertible<short, UInt64>::value)); // NOLINT
+  EXPECT_FALSE((LosslessArithmeticConvertible<
+      signed char, unsigned int>::value));  // NOLINT
+
+  // Same size and same signedness: fine too.
+  EXPECT_TRUE((LosslessArithmeticConvertible<
+               unsigned char, unsigned char>::value));
+  EXPECT_TRUE((LosslessArithmeticConvertible<int, int>::value));
+  EXPECT_TRUE((LosslessArithmeticConvertible<wchar_t, wchar_t>::value));
+  EXPECT_TRUE((LosslessArithmeticConvertible<
+               unsigned long, unsigned long>::value));  // NOLINT
+
+  // Same size, different signedness: not fine.
+  EXPECT_FALSE((LosslessArithmeticConvertible<
+                unsigned char, signed char>::value));
+  EXPECT_FALSE((LosslessArithmeticConvertible<int, unsigned int>::value));
+  EXPECT_FALSE((LosslessArithmeticConvertible<UInt64, Int64>::value));
+
+  // Larger size => smaller size is not fine.
+  EXPECT_FALSE((LosslessArithmeticConvertible<long, char>::value));  // NOLINT
+  EXPECT_FALSE((LosslessArithmeticConvertible<int, signed char>::value));
+  EXPECT_FALSE((LosslessArithmeticConvertible<Int64, unsigned int>::value));
+}
+
+TEST(LosslessArithmeticConvertibleTest, IntegerToFloatingPoint) {
+  // Integers cannot be losslessly converted to floating-points, as
+  // the format of the latter is implementation-defined.
+  EXPECT_FALSE((LosslessArithmeticConvertible<char, float>::value));
+  EXPECT_FALSE((LosslessArithmeticConvertible<int, double>::value));
+  EXPECT_FALSE((LosslessArithmeticConvertible<
+                short, long double>::value));  // NOLINT
+}
+
+TEST(LosslessArithmeticConvertibleTest, FloatingPointToBool) {
+  EXPECT_FALSE((LosslessArithmeticConvertible<float, bool>::value));
+  EXPECT_FALSE((LosslessArithmeticConvertible<double, bool>::value));
+}
+
+TEST(LosslessArithmeticConvertibleTest, FloatingPointToInteger) {
+  EXPECT_FALSE((LosslessArithmeticConvertible<float, long>::value));  // NOLINT
+  EXPECT_FALSE((LosslessArithmeticConvertible<double, Int64>::value));
+  EXPECT_FALSE((LosslessArithmeticConvertible<long double, int>::value));
+}
+
+TEST(LosslessArithmeticConvertibleTest, FloatingPointToFloatingPoint) {
+  // Smaller size => larger size is fine.
+  EXPECT_TRUE((LosslessArithmeticConvertible<float, double>::value));
+  EXPECT_TRUE((LosslessArithmeticConvertible<float, long double>::value));
+  EXPECT_TRUE((LosslessArithmeticConvertible<double, long double>::value));
+
+  // Same size: fine.
+  EXPECT_TRUE((LosslessArithmeticConvertible<float, float>::value));
+  EXPECT_TRUE((LosslessArithmeticConvertible<double, double>::value));
+
+  // Larger size => smaller size is not fine.
+  EXPECT_FALSE((LosslessArithmeticConvertible<double, float>::value));
+  GTEST_INTENTIONAL_CONST_COND_PUSH_()
+  if (sizeof(double) == sizeof(long double)) {  // NOLINT
+  GTEST_INTENTIONAL_CONST_COND_POP_()
+    // In some implementations (e.g. MSVC), double and long double
+    // have the same size.
+    EXPECT_TRUE((LosslessArithmeticConvertible<long double, double>::value));
+  } else {
+    EXPECT_FALSE((LosslessArithmeticConvertible<long double, double>::value));
+  }
+}
+
+// Tests the TupleMatches() template function.
+
+TEST(TupleMatchesTest, WorksForSize0) {
+  std::tuple<> matchers;
+  std::tuple<> values;
+
+  EXPECT_TRUE(TupleMatches(matchers, values));
+}
+
+TEST(TupleMatchesTest, WorksForSize1) {
+  std::tuple<Matcher<int> > matchers(Eq(1));
+  std::tuple<int> values1(1), values2(2);
+
+  EXPECT_TRUE(TupleMatches(matchers, values1));
+  EXPECT_FALSE(TupleMatches(matchers, values2));
+}
+
+TEST(TupleMatchesTest, WorksForSize2) {
+  std::tuple<Matcher<int>, Matcher<char> > matchers(Eq(1), Eq('a'));
+  std::tuple<int, char> values1(1, 'a'), values2(1, 'b'), values3(2, 'a'),
+      values4(2, 'b');
+
+  EXPECT_TRUE(TupleMatches(matchers, values1));
+  EXPECT_FALSE(TupleMatches(matchers, values2));
+  EXPECT_FALSE(TupleMatches(matchers, values3));
+  EXPECT_FALSE(TupleMatches(matchers, values4));
+}
+
+TEST(TupleMatchesTest, WorksForSize5) {
+  std::tuple<Matcher<int>, Matcher<char>, Matcher<bool>,
+             Matcher<long>,  // NOLINT
+             Matcher<std::string> >
+      matchers(Eq(1), Eq('a'), Eq(true), Eq(2L), Eq("hi"));
+  std::tuple<int, char, bool, long, std::string>  // NOLINT
+      values1(1, 'a', true, 2L, "hi"), values2(1, 'a', true, 2L, "hello"),
+      values3(2, 'a', true, 2L, "hi");
+
+  EXPECT_TRUE(TupleMatches(matchers, values1));
+  EXPECT_FALSE(TupleMatches(matchers, values2));
+  EXPECT_FALSE(TupleMatches(matchers, values3));
+}
+
+// Tests that Assert(true, ...) succeeds.
+TEST(AssertTest, SucceedsOnTrue) {
+  Assert(true, __FILE__, __LINE__, "This should succeed.");
+  Assert(true, __FILE__, __LINE__);  // This should succeed too.
+}
+
+// Tests that Assert(false, ...) generates a fatal failure.
+TEST(AssertTest, FailsFatallyOnFalse) {
+  EXPECT_DEATH_IF_SUPPORTED({
+    Assert(false, __FILE__, __LINE__, "This should fail.");
+  }, "");
+
+  EXPECT_DEATH_IF_SUPPORTED({
+    Assert(false, __FILE__, __LINE__);
+  }, "");
+}
+
+// Tests that Expect(true, ...) succeeds.
+TEST(ExpectTest, SucceedsOnTrue) {
+  Expect(true, __FILE__, __LINE__, "This should succeed.");
+  Expect(true, __FILE__, __LINE__);  // This should succeed too.
+}
+
+// Tests that Expect(false, ...) generates a non-fatal failure.
+TEST(ExpectTest, FailsNonfatallyOnFalse) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    Expect(false, __FILE__, __LINE__, "This should fail.");
+  }, "This should fail");
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    Expect(false, __FILE__, __LINE__);
+  }, "Expectation failed");
+}
+
+// Tests LogIsVisible().
+
+class LogIsVisibleTest : public ::testing::Test {
+ protected:
+  void SetUp() override { original_verbose_ = GMOCK_FLAG(verbose); }
+
+  void TearDown() override { GMOCK_FLAG(verbose) = original_verbose_; }
+
+  std::string original_verbose_;
+};
+
+TEST_F(LogIsVisibleTest, AlwaysReturnsTrueIfVerbosityIsInfo) {
+  GMOCK_FLAG(verbose) = kInfoVerbosity;
+  EXPECT_TRUE(LogIsVisible(kInfo));
+  EXPECT_TRUE(LogIsVisible(kWarning));
+}
+
+TEST_F(LogIsVisibleTest, AlwaysReturnsFalseIfVerbosityIsError) {
+  GMOCK_FLAG(verbose) = kErrorVerbosity;
+  EXPECT_FALSE(LogIsVisible(kInfo));
+  EXPECT_FALSE(LogIsVisible(kWarning));
+}
+
+TEST_F(LogIsVisibleTest, WorksWhenVerbosityIsWarning) {
+  GMOCK_FLAG(verbose) = kWarningVerbosity;
+  EXPECT_FALSE(LogIsVisible(kInfo));
+  EXPECT_TRUE(LogIsVisible(kWarning));
+}
+
+#if GTEST_HAS_STREAM_REDIRECTION
+
+// Tests the Log() function.
+
+// Verifies that Log() behaves correctly for the given verbosity level
+// and log severity.
+void TestLogWithSeverity(const std::string& verbosity, LogSeverity severity,
+                         bool should_print) {
+  const std::string old_flag = GMOCK_FLAG(verbose);
+  GMOCK_FLAG(verbose) = verbosity;
+  CaptureStdout();
+  Log(severity, "Test log.\n", 0);
+  if (should_print) {
+    EXPECT_THAT(GetCapturedStdout().c_str(),
+                ContainsRegex(
+                    severity == kWarning ?
+                    "^\nGMOCK WARNING:\nTest log\\.\nStack trace:\n" :
+                    "^\nTest log\\.\nStack trace:\n"));
+  } else {
+    EXPECT_STREQ("", GetCapturedStdout().c_str());
+  }
+  GMOCK_FLAG(verbose) = old_flag;
+}
+
+// Tests that when the stack_frames_to_skip parameter is negative,
+// Log() doesn't include the stack trace in the output.
+TEST(LogTest, NoStackTraceWhenStackFramesToSkipIsNegative) {
+  const std::string saved_flag = GMOCK_FLAG(verbose);
+  GMOCK_FLAG(verbose) = kInfoVerbosity;
+  CaptureStdout();
+  Log(kInfo, "Test log.\n", -1);
+  EXPECT_STREQ("\nTest log.\n", GetCapturedStdout().c_str());
+  GMOCK_FLAG(verbose) = saved_flag;
+}
+
+struct MockStackTraceGetter : testing::internal::OsStackTraceGetterInterface {
+  std::string CurrentStackTrace(int max_depth, int skip_count) override {
+    return (testing::Message() << max_depth << "::" << skip_count << "\n")
+        .GetString();
+  }
+  void UponLeavingGTest() override {}
+};
+
+// Tests that in opt mode, a positive stack_frames_to_skip argument is
+// treated as 0.
+TEST(LogTest, NoSkippingStackFrameInOptMode) {
+  MockStackTraceGetter* mock_os_stack_trace_getter = new MockStackTraceGetter;
+  GetUnitTestImpl()->set_os_stack_trace_getter(mock_os_stack_trace_getter);
+
+  CaptureStdout();
+  Log(kWarning, "Test log.\n", 100);
+  const std::string log = GetCapturedStdout();
+
+  std::string expected_trace =
+      (testing::Message() << GTEST_FLAG(stack_trace_depth) << "::").GetString();
+  std::string expected_message =
+      "\nGMOCK WARNING:\n"
+      "Test log.\n"
+      "Stack trace:\n" +
+      expected_trace;
+  EXPECT_THAT(log, HasSubstr(expected_message));
+  int skip_count = atoi(log.substr(expected_message.size()).c_str());
+
+# if defined(NDEBUG)
+  // In opt mode, no stack frame should be skipped.
+  const int expected_skip_count = 0;
+# else
+  // In dbg mode, the stack frames should be skipped.
+  const int expected_skip_count = 100;
+# endif
+
+  // Note that each inner implementation layer will +1 the number to remove
+  // itself from the trace. This means that the value is a little higher than
+  // expected, but close enough.
+  EXPECT_THAT(skip_count,
+              AllOf(Ge(expected_skip_count), Le(expected_skip_count + 10)));
+
+  // Restores the default OS stack trace getter.
+  GetUnitTestImpl()->set_os_stack_trace_getter(nullptr);
+}
+
+// Tests that all logs are printed when the value of the
+// --gmock_verbose flag is "info".
+TEST(LogTest, AllLogsArePrintedWhenVerbosityIsInfo) {
+  TestLogWithSeverity(kInfoVerbosity, kInfo, true);
+  TestLogWithSeverity(kInfoVerbosity, kWarning, true);
+}
+
+// Tests that only warnings are printed when the value of the
+// --gmock_verbose flag is "warning".
+TEST(LogTest, OnlyWarningsArePrintedWhenVerbosityIsWarning) {
+  TestLogWithSeverity(kWarningVerbosity, kInfo, false);
+  TestLogWithSeverity(kWarningVerbosity, kWarning, true);
+}
+
+// Tests that no logs are printed when the value of the
+// --gmock_verbose flag is "error".
+TEST(LogTest, NoLogsArePrintedWhenVerbosityIsError) {
+  TestLogWithSeverity(kErrorVerbosity, kInfo, false);
+  TestLogWithSeverity(kErrorVerbosity, kWarning, false);
+}
+
+// Tests that only warnings are printed when the value of the
+// --gmock_verbose flag is invalid.
+TEST(LogTest, OnlyWarningsArePrintedWhenVerbosityIsInvalid) {
+  TestLogWithSeverity("invalid", kInfo, false);
+  TestLogWithSeverity("invalid", kWarning, true);
+}
+
+// Verifies that Log() behaves correctly for the given verbosity level
+// and log severity.
+std::string GrabOutput(void(*logger)(), const char* verbosity) {
+  const std::string saved_flag = GMOCK_FLAG(verbose);
+  GMOCK_FLAG(verbose) = verbosity;
+  CaptureStdout();
+  logger();
+  GMOCK_FLAG(verbose) = saved_flag;
+  return GetCapturedStdout();
+}
+
+class DummyMock {
+ public:
+  MOCK_METHOD0(TestMethod, void());
+  MOCK_METHOD1(TestMethodArg, void(int dummy));
+};
+
+void ExpectCallLogger() {
+  DummyMock mock;
+  EXPECT_CALL(mock, TestMethod());
+  mock.TestMethod();
+}
+
+// Verifies that EXPECT_CALL logs if the --gmock_verbose flag is set to "info".
+TEST(ExpectCallTest, LogsWhenVerbosityIsInfo) {
+  EXPECT_THAT(std::string(GrabOutput(ExpectCallLogger, kInfoVerbosity)),
+              HasSubstr("EXPECT_CALL(mock, TestMethod())"));
+}
+
+// Verifies that EXPECT_CALL doesn't log
+// if the --gmock_verbose flag is set to "warning".
+TEST(ExpectCallTest, DoesNotLogWhenVerbosityIsWarning) {
+  EXPECT_STREQ("", GrabOutput(ExpectCallLogger, kWarningVerbosity).c_str());
+}
+
+// Verifies that EXPECT_CALL doesn't log
+// if the --gmock_verbose flag is set to "error".
+TEST(ExpectCallTest,  DoesNotLogWhenVerbosityIsError) {
+  EXPECT_STREQ("", GrabOutput(ExpectCallLogger, kErrorVerbosity).c_str());
+}
+
+void OnCallLogger() {
+  DummyMock mock;
+  ON_CALL(mock, TestMethod());
+}
+
+// Verifies that ON_CALL logs if the --gmock_verbose flag is set to "info".
+TEST(OnCallTest, LogsWhenVerbosityIsInfo) {
+  EXPECT_THAT(std::string(GrabOutput(OnCallLogger, kInfoVerbosity)),
+              HasSubstr("ON_CALL(mock, TestMethod())"));
+}
+
+// Verifies that ON_CALL doesn't log
+// if the --gmock_verbose flag is set to "warning".
+TEST(OnCallTest, DoesNotLogWhenVerbosityIsWarning) {
+  EXPECT_STREQ("", GrabOutput(OnCallLogger, kWarningVerbosity).c_str());
+}
+
+// Verifies that ON_CALL doesn't log if
+// the --gmock_verbose flag is set to "error".
+TEST(OnCallTest, DoesNotLogWhenVerbosityIsError) {
+  EXPECT_STREQ("", GrabOutput(OnCallLogger, kErrorVerbosity).c_str());
+}
+
+void OnCallAnyArgumentLogger() {
+  DummyMock mock;
+  ON_CALL(mock, TestMethodArg(_));
+}
+
+// Verifies that ON_CALL prints provided _ argument.
+TEST(OnCallTest, LogsAnythingArgument) {
+  EXPECT_THAT(std::string(GrabOutput(OnCallAnyArgumentLogger, kInfoVerbosity)),
+              HasSubstr("ON_CALL(mock, TestMethodArg(_)"));
+}
+
+#endif  // GTEST_HAS_STREAM_REDIRECTION
+
+// Tests StlContainerView.
+
+TEST(StlContainerViewTest, WorksForStlContainer) {
+  StaticAssertTypeEq<std::vector<int>,
+      StlContainerView<std::vector<int> >::type>();
+  StaticAssertTypeEq<const std::vector<double>&,
+      StlContainerView<std::vector<double> >::const_reference>();
+
+  typedef std::vector<char> Chars;
+  Chars v1;
+  const Chars& v2(StlContainerView<Chars>::ConstReference(v1));
+  EXPECT_EQ(&v1, &v2);
+
+  v1.push_back('a');
+  Chars v3 = StlContainerView<Chars>::Copy(v1);
+  EXPECT_THAT(v3, Eq(v3));
+}
+
+TEST(StlContainerViewTest, WorksForStaticNativeArray) {
+  StaticAssertTypeEq<NativeArray<int>,
+      StlContainerView<int[3]>::type>();
+  StaticAssertTypeEq<NativeArray<double>,
+      StlContainerView<const double[4]>::type>();
+  StaticAssertTypeEq<NativeArray<char[3]>,
+      StlContainerView<const char[2][3]>::type>();
+
+  StaticAssertTypeEq<const NativeArray<int>,
+      StlContainerView<int[2]>::const_reference>();
+
+  int a1[3] = { 0, 1, 2 };
+  NativeArray<int> a2 = StlContainerView<int[3]>::ConstReference(a1);
+  EXPECT_EQ(3U, a2.size());
+  EXPECT_EQ(a1, a2.begin());
+
+  const NativeArray<int> a3 = StlContainerView<int[3]>::Copy(a1);
+  ASSERT_EQ(3U, a3.size());
+  EXPECT_EQ(0, a3.begin()[0]);
+  EXPECT_EQ(1, a3.begin()[1]);
+  EXPECT_EQ(2, a3.begin()[2]);
+
+  // Makes sure a1 and a3 aren't aliases.
+  a1[0] = 3;
+  EXPECT_EQ(0, a3.begin()[0]);
+}
+
+TEST(StlContainerViewTest, WorksForDynamicNativeArray) {
+  StaticAssertTypeEq<NativeArray<int>,
+                     StlContainerView<std::tuple<const int*, size_t> >::type>();
+  StaticAssertTypeEq<
+      NativeArray<double>,
+      StlContainerView<std::tuple<std::shared_ptr<double>, int> >::type>();
+
+  StaticAssertTypeEq<
+      const NativeArray<int>,
+      StlContainerView<std::tuple<const int*, int> >::const_reference>();
+
+  int a1[3] = { 0, 1, 2 };
+  const int* const p1 = a1;
+  NativeArray<int> a2 =
+      StlContainerView<std::tuple<const int*, int> >::ConstReference(
+          std::make_tuple(p1, 3));
+  EXPECT_EQ(3U, a2.size());
+  EXPECT_EQ(a1, a2.begin());
+
+  const NativeArray<int> a3 = StlContainerView<std::tuple<int*, size_t> >::Copy(
+      std::make_tuple(static_cast<int*>(a1), 3));
+  ASSERT_EQ(3U, a3.size());
+  EXPECT_EQ(0, a3.begin()[0]);
+  EXPECT_EQ(1, a3.begin()[1]);
+  EXPECT_EQ(2, a3.begin()[2]);
+
+  // Makes sure a1 and a3 aren't aliases.
+  a1[0] = 3;
+  EXPECT_EQ(0, a3.begin()[0]);
+}
+
+// Tests the Function template struct.
+
+TEST(FunctionTest, Nullary) {
+  typedef Function<int()> F;  // NOLINT
+  EXPECT_EQ(0u, F::ArgumentCount);
+  EXPECT_TRUE((std::is_same<int, F::Result>::value));
+  EXPECT_TRUE((std::is_same<std::tuple<>, F::ArgumentTuple>::value));
+  EXPECT_TRUE((std::is_same<std::tuple<>, F::ArgumentMatcherTuple>::value));
+  EXPECT_TRUE((std::is_same<void(), F::MakeResultVoid>::value));
+  EXPECT_TRUE((std::is_same<IgnoredValue(), F::MakeResultIgnoredValue>::value));
+}
+
+TEST(FunctionTest, Unary) {
+  typedef Function<int(bool)> F;  // NOLINT
+  EXPECT_EQ(1u, F::ArgumentCount);
+  EXPECT_TRUE((std::is_same<int, F::Result>::value));
+  EXPECT_TRUE((std::is_same<bool, F::Arg<0>::type>::value));
+  EXPECT_TRUE((std::is_same<std::tuple<bool>, F::ArgumentTuple>::value));
+  EXPECT_TRUE((
+      std::is_same<std::tuple<Matcher<bool>>, F::ArgumentMatcherTuple>::value));
+  EXPECT_TRUE((std::is_same<void(bool), F::MakeResultVoid>::value));  // NOLINT
+  EXPECT_TRUE((std::is_same<IgnoredValue(bool),                       // NOLINT
+                            F::MakeResultIgnoredValue>::value));
+}
+
+TEST(FunctionTest, Binary) {
+  typedef Function<int(bool, const long&)> F;  // NOLINT
+  EXPECT_EQ(2u, F::ArgumentCount);
+  EXPECT_TRUE((std::is_same<int, F::Result>::value));
+  EXPECT_TRUE((std::is_same<bool, F::Arg<0>::type>::value));
+  EXPECT_TRUE((std::is_same<const long&, F::Arg<1>::type>::value));  // NOLINT
+  EXPECT_TRUE((std::is_same<std::tuple<bool, const long&>,           // NOLINT
+                            F::ArgumentTuple>::value));
+  EXPECT_TRUE(
+      (std::is_same<std::tuple<Matcher<bool>, Matcher<const long&>>,  // NOLINT
+                    F::ArgumentMatcherTuple>::value));
+  EXPECT_TRUE((std::is_same<void(bool, const long&),  // NOLINT
+                            F::MakeResultVoid>::value));
+  EXPECT_TRUE((std::is_same<IgnoredValue(bool, const long&),  // NOLINT
+                            F::MakeResultIgnoredValue>::value));
+}
+
+TEST(FunctionTest, LongArgumentList) {
+  typedef Function<char(bool, int, char*, int&, const long&)> F;  // NOLINT
+  EXPECT_EQ(5u, F::ArgumentCount);
+  EXPECT_TRUE((std::is_same<char, F::Result>::value));
+  EXPECT_TRUE((std::is_same<bool, F::Arg<0>::type>::value));
+  EXPECT_TRUE((std::is_same<int, F::Arg<1>::type>::value));
+  EXPECT_TRUE((std::is_same<char*, F::Arg<2>::type>::value));
+  EXPECT_TRUE((std::is_same<int&, F::Arg<3>::type>::value));
+  EXPECT_TRUE((std::is_same<const long&, F::Arg<4>::type>::value));  // NOLINT
+  EXPECT_TRUE(
+      (std::is_same<std::tuple<bool, int, char*, int&, const long&>,  // NOLINT
+                    F::ArgumentTuple>::value));
+  EXPECT_TRUE(
+      (std::is_same<
+          std::tuple<Matcher<bool>, Matcher<int>, Matcher<char*>, Matcher<int&>,
+                     Matcher<const long&>>,  // NOLINT
+          F::ArgumentMatcherTuple>::value));
+  EXPECT_TRUE(
+      (std::is_same<void(bool, int, char*, int&, const long&),  // NOLINT
+                    F::MakeResultVoid>::value));
+  EXPECT_TRUE((
+      std::is_same<IgnoredValue(bool, int, char*, int&, const long&),  // NOLINT
+                   F::MakeResultIgnoredValue>::value));
+}
+
+}  // namespace
+}  // namespace internal
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-matchers_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-matchers_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..037352676f0281e35c1ed684864032d150d09d5f
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-matchers_test.cc
@@ -0,0 +1,6801 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests some commonly used argument matchers.
+
+// Silence warning C4244: 'initializing': conversion from 'int' to 'short',
+// possible loss of data and C4100, unreferenced local parameter
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4244)
+# pragma warning(disable:4100)
+#endif
+
+#include "gmock/gmock-matchers.h"
+#include "gmock/gmock-more-matchers.h"
+
+#include <string.h>
+#include <time.h>
+#include <deque>
+#include <forward_list>
+#include <functional>
+#include <iostream>
+#include <iterator>
+#include <limits>
+#include <list>
+#include <map>
+#include <memory>
+#include <set>
+#include <sstream>
+#include <string>
+#include <type_traits>
+#include <utility>
+#include <vector>
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include "gtest/gtest-spi.h"
+
+namespace testing {
+namespace gmock_matchers_test {
+namespace {
+
+using std::greater;
+using std::less;
+using std::list;
+using std::make_pair;
+using std::map;
+using std::multimap;
+using std::multiset;
+using std::ostream;
+using std::pair;
+using std::set;
+using std::stringstream;
+using std::vector;
+using testing::internal::DummyMatchResultListener;
+using testing::internal::ElementMatcherPair;
+using testing::internal::ElementMatcherPairs;
+using testing::internal::ExplainMatchFailureTupleTo;
+using testing::internal::FloatingEqMatcher;
+using testing::internal::FormatMatcherDescription;
+using testing::internal::IsReadableTypeName;
+using testing::internal::MatchMatrix;
+using testing::internal::PredicateFormatterFromMatcher;
+using testing::internal::RE;
+using testing::internal::StreamMatchResultListener;
+using testing::internal::Strings;
+
+// Helper for testing container-valued matchers in mock method context. It is
+// important to test matchers in this context, since it requires additional type
+// deduction beyond what EXPECT_THAT does, thus making it more restrictive.
+struct ContainerHelper {
+  MOCK_METHOD1(Call, void(std::vector<std::unique_ptr<int>>));
+};
+
+std::vector<std::unique_ptr<int>> MakeUniquePtrs(const std::vector<int>& ints) {
+  std::vector<std::unique_ptr<int>> pointers;
+  for (int i : ints) pointers.emplace_back(new int(i));
+  return pointers;
+}
+
+// For testing ExplainMatchResultTo().
+class GreaterThanMatcher : public MatcherInterface<int> {
+ public:
+  explicit GreaterThanMatcher(int rhs) : rhs_(rhs) {}
+
+  void DescribeTo(ostream* os) const override { *os << "is > " << rhs_; }
+
+  bool MatchAndExplain(int lhs, MatchResultListener* listener) const override {
+    const int diff = lhs - rhs_;
+    if (diff > 0) {
+      *listener << "which is " << diff << " more than " << rhs_;
+    } else if (diff == 0) {
+      *listener << "which is the same as " << rhs_;
+    } else {
+      *listener << "which is " << -diff << " less than " << rhs_;
+    }
+
+    return lhs > rhs_;
+  }
+
+ private:
+  int rhs_;
+};
+
+Matcher<int> GreaterThan(int n) {
+  return MakeMatcher(new GreaterThanMatcher(n));
+}
+
+std::string OfType(const std::string& type_name) {
+#if GTEST_HAS_RTTI
+  return " (of type " + type_name + ")";
+#else
+  return "";
+#endif
+}
+
+// Returns the description of the given matcher.
+template <typename T>
+std::string Describe(const Matcher<T>& m) {
+  return DescribeMatcher<T>(m);
+}
+
+// Returns the description of the negation of the given matcher.
+template <typename T>
+std::string DescribeNegation(const Matcher<T>& m) {
+  return DescribeMatcher<T>(m, true);
+}
+
+// Returns the reason why x matches, or doesn't match, m.
+template <typename MatcherType, typename Value>
+std::string Explain(const MatcherType& m, const Value& x) {
+  StringMatchResultListener listener;
+  ExplainMatchResult(m, x, &listener);
+  return listener.str();
+}
+
+TEST(MonotonicMatcherTest, IsPrintable) {
+  stringstream ss;
+  ss << GreaterThan(5);
+  EXPECT_EQ("is > 5", ss.str());
+}
+
+TEST(MatchResultListenerTest, StreamingWorks) {
+  StringMatchResultListener listener;
+  listener << "hi" << 5;
+  EXPECT_EQ("hi5", listener.str());
+
+  listener.Clear();
+  EXPECT_EQ("", listener.str());
+
+  listener << 42;
+  EXPECT_EQ("42", listener.str());
+
+  // Streaming shouldn't crash when the underlying ostream is NULL.
+  DummyMatchResultListener dummy;
+  dummy << "hi" << 5;
+}
+
+TEST(MatchResultListenerTest, CanAccessUnderlyingStream) {
+  EXPECT_TRUE(DummyMatchResultListener().stream() == nullptr);
+  EXPECT_TRUE(StreamMatchResultListener(nullptr).stream() == nullptr);
+
+  EXPECT_EQ(&std::cout, StreamMatchResultListener(&std::cout).stream());
+}
+
+TEST(MatchResultListenerTest, IsInterestedWorks) {
+  EXPECT_TRUE(StringMatchResultListener().IsInterested());
+  EXPECT_TRUE(StreamMatchResultListener(&std::cout).IsInterested());
+
+  EXPECT_FALSE(DummyMatchResultListener().IsInterested());
+  EXPECT_FALSE(StreamMatchResultListener(nullptr).IsInterested());
+}
+
+// Makes sure that the MatcherInterface<T> interface doesn't
+// change.
+class EvenMatcherImpl : public MatcherInterface<int> {
+ public:
+  bool MatchAndExplain(int x,
+                       MatchResultListener* /* listener */) const override {
+    return x % 2 == 0;
+  }
+
+  void DescribeTo(ostream* os) const override { *os << "is an even number"; }
+
+  // We deliberately don't define DescribeNegationTo() and
+  // ExplainMatchResultTo() here, to make sure the definition of these
+  // two methods is optional.
+};
+
+// Makes sure that the MatcherInterface API doesn't change.
+TEST(MatcherInterfaceTest, CanBeImplementedUsingPublishedAPI) {
+  EvenMatcherImpl m;
+}
+
+// Tests implementing a monomorphic matcher using MatchAndExplain().
+
+class NewEvenMatcherImpl : public MatcherInterface<int> {
+ public:
+  bool MatchAndExplain(int x, MatchResultListener* listener) const override {
+    const bool match = x % 2 == 0;
+    // Verifies that we can stream to a listener directly.
+    *listener << "value % " << 2;
+    if (listener->stream() != nullptr) {
+      // Verifies that we can stream to a listener's underlying stream
+      // too.
+      *listener->stream() << " == " << (x % 2);
+    }
+    return match;
+  }
+
+  void DescribeTo(ostream* os) const override { *os << "is an even number"; }
+};
+
+TEST(MatcherInterfaceTest, CanBeImplementedUsingNewAPI) {
+  Matcher<int> m = MakeMatcher(new NewEvenMatcherImpl);
+  EXPECT_TRUE(m.Matches(2));
+  EXPECT_FALSE(m.Matches(3));
+  EXPECT_EQ("value % 2 == 0", Explain(m, 2));
+  EXPECT_EQ("value % 2 == 1", Explain(m, 3));
+}
+
+// Tests default-constructing a matcher.
+TEST(MatcherTest, CanBeDefaultConstructed) {
+  Matcher<double> m;
+}
+
+// Tests that Matcher<T> can be constructed from a MatcherInterface<T>*.
+TEST(MatcherTest, CanBeConstructedFromMatcherInterface) {
+  const MatcherInterface<int>* impl = new EvenMatcherImpl;
+  Matcher<int> m(impl);
+  EXPECT_TRUE(m.Matches(4));
+  EXPECT_FALSE(m.Matches(5));
+}
+
+// Tests that value can be used in place of Eq(value).
+TEST(MatcherTest, CanBeImplicitlyConstructedFromValue) {
+  Matcher<int> m1 = 5;
+  EXPECT_TRUE(m1.Matches(5));
+  EXPECT_FALSE(m1.Matches(6));
+}
+
+// Tests that NULL can be used in place of Eq(NULL).
+TEST(MatcherTest, CanBeImplicitlyConstructedFromNULL) {
+  Matcher<int*> m1 = nullptr;
+  EXPECT_TRUE(m1.Matches(nullptr));
+  int n = 0;
+  EXPECT_FALSE(m1.Matches(&n));
+}
+
+// Tests that matchers can be constructed from a variable that is not properly
+// defined. This should be illegal, but many users rely on this accidentally.
+struct Undefined {
+  virtual ~Undefined() = 0;
+  static const int kInt = 1;
+};
+
+TEST(MatcherTest, CanBeConstructedFromUndefinedVariable) {
+  Matcher<int> m1 = Undefined::kInt;
+  EXPECT_TRUE(m1.Matches(1));
+  EXPECT_FALSE(m1.Matches(2));
+}
+
+// Test that a matcher parameterized with an abstract class compiles.
+TEST(MatcherTest, CanAcceptAbstractClass) { Matcher<const Undefined&> m = _; }
+
+// Tests that matchers are copyable.
+TEST(MatcherTest, IsCopyable) {
+  // Tests the copy constructor.
+  Matcher<bool> m1 = Eq(false);
+  EXPECT_TRUE(m1.Matches(false));
+  EXPECT_FALSE(m1.Matches(true));
+
+  // Tests the assignment operator.
+  m1 = Eq(true);
+  EXPECT_TRUE(m1.Matches(true));
+  EXPECT_FALSE(m1.Matches(false));
+}
+
+// Tests that Matcher<T>::DescribeTo() calls
+// MatcherInterface<T>::DescribeTo().
+TEST(MatcherTest, CanDescribeItself) {
+  EXPECT_EQ("is an even number",
+            Describe(Matcher<int>(new EvenMatcherImpl)));
+}
+
+// Tests Matcher<T>::MatchAndExplain().
+TEST(MatcherTest, MatchAndExplain) {
+  Matcher<int> m = GreaterThan(0);
+  StringMatchResultListener listener1;
+  EXPECT_TRUE(m.MatchAndExplain(42, &listener1));
+  EXPECT_EQ("which is 42 more than 0", listener1.str());
+
+  StringMatchResultListener listener2;
+  EXPECT_FALSE(m.MatchAndExplain(-9, &listener2));
+  EXPECT_EQ("which is 9 less than 0", listener2.str());
+}
+
+// Tests that a C-string literal can be implicitly converted to a
+// Matcher<std::string> or Matcher<const std::string&>.
+TEST(StringMatcherTest, CanBeImplicitlyConstructedFromCStringLiteral) {
+  Matcher<std::string> m1 = "hi";
+  EXPECT_TRUE(m1.Matches("hi"));
+  EXPECT_FALSE(m1.Matches("hello"));
+
+  Matcher<const std::string&> m2 = "hi";
+  EXPECT_TRUE(m2.Matches("hi"));
+  EXPECT_FALSE(m2.Matches("hello"));
+}
+
+// Tests that a string object can be implicitly converted to a
+// Matcher<std::string> or Matcher<const std::string&>.
+TEST(StringMatcherTest, CanBeImplicitlyConstructedFromString) {
+  Matcher<std::string> m1 = std::string("hi");
+  EXPECT_TRUE(m1.Matches("hi"));
+  EXPECT_FALSE(m1.Matches("hello"));
+
+  Matcher<const std::string&> m2 = std::string("hi");
+  EXPECT_TRUE(m2.Matches("hi"));
+  EXPECT_FALSE(m2.Matches("hello"));
+}
+
+#if GTEST_HAS_ABSL
+// Tests that a C-string literal can be implicitly converted to a
+// Matcher<absl::string_view> or Matcher<const absl::string_view&>.
+TEST(StringViewMatcherTest, CanBeImplicitlyConstructedFromCStringLiteral) {
+  Matcher<absl::string_view> m1 = "cats";
+  EXPECT_TRUE(m1.Matches("cats"));
+  EXPECT_FALSE(m1.Matches("dogs"));
+
+  Matcher<const absl::string_view&> m2 = "cats";
+  EXPECT_TRUE(m2.Matches("cats"));
+  EXPECT_FALSE(m2.Matches("dogs"));
+}
+
+// Tests that a std::string object can be implicitly converted to a
+// Matcher<absl::string_view> or Matcher<const absl::string_view&>.
+TEST(StringViewMatcherTest, CanBeImplicitlyConstructedFromString) {
+  Matcher<absl::string_view> m1 = std::string("cats");
+  EXPECT_TRUE(m1.Matches("cats"));
+  EXPECT_FALSE(m1.Matches("dogs"));
+
+  Matcher<const absl::string_view&> m2 = std::string("cats");
+  EXPECT_TRUE(m2.Matches("cats"));
+  EXPECT_FALSE(m2.Matches("dogs"));
+}
+
+// Tests that a absl::string_view object can be implicitly converted to a
+// Matcher<absl::string_view> or Matcher<const absl::string_view&>.
+TEST(StringViewMatcherTest, CanBeImplicitlyConstructedFromStringView) {
+  Matcher<absl::string_view> m1 = absl::string_view("cats");
+  EXPECT_TRUE(m1.Matches("cats"));
+  EXPECT_FALSE(m1.Matches("dogs"));
+
+  Matcher<const absl::string_view&> m2 = absl::string_view("cats");
+  EXPECT_TRUE(m2.Matches("cats"));
+  EXPECT_FALSE(m2.Matches("dogs"));
+}
+#endif  // GTEST_HAS_ABSL
+
+// Tests that a std::reference_wrapper<std::string> object can be implicitly
+// converted to a Matcher<std::string> or Matcher<const std::string&> via Eq().
+TEST(StringMatcherTest,
+     CanBeImplicitlyConstructedFromEqReferenceWrapperString) {
+  std::string value = "cats";
+  Matcher<std::string> m1 = Eq(std::ref(value));
+  EXPECT_TRUE(m1.Matches("cats"));
+  EXPECT_FALSE(m1.Matches("dogs"));
+
+  Matcher<const std::string&> m2 = Eq(std::ref(value));
+  EXPECT_TRUE(m2.Matches("cats"));
+  EXPECT_FALSE(m2.Matches("dogs"));
+}
+
+// Tests that MakeMatcher() constructs a Matcher<T> from a
+// MatcherInterface* without requiring the user to explicitly
+// write the type.
+TEST(MakeMatcherTest, ConstructsMatcherFromMatcherInterface) {
+  const MatcherInterface<int>* dummy_impl = nullptr;
+  Matcher<int> m = MakeMatcher(dummy_impl);
+}
+
+// Tests that MakePolymorphicMatcher() can construct a polymorphic
+// matcher from its implementation using the old API.
+const int g_bar = 1;
+class ReferencesBarOrIsZeroImpl {
+ public:
+  template <typename T>
+  bool MatchAndExplain(const T& x,
+                       MatchResultListener* /* listener */) const {
+    const void* p = &x;
+    return p == &g_bar || x == 0;
+  }
+
+  void DescribeTo(ostream* os) const { *os << "g_bar or zero"; }
+
+  void DescribeNegationTo(ostream* os) const {
+    *os << "doesn't reference g_bar and is not zero";
+  }
+};
+
+// This function verifies that MakePolymorphicMatcher() returns a
+// PolymorphicMatcher<T> where T is the argument's type.
+PolymorphicMatcher<ReferencesBarOrIsZeroImpl> ReferencesBarOrIsZero() {
+  return MakePolymorphicMatcher(ReferencesBarOrIsZeroImpl());
+}
+
+TEST(MakePolymorphicMatcherTest, ConstructsMatcherUsingOldAPI) {
+  // Using a polymorphic matcher to match a reference type.
+  Matcher<const int&> m1 = ReferencesBarOrIsZero();
+  EXPECT_TRUE(m1.Matches(0));
+  // Verifies that the identity of a by-reference argument is preserved.
+  EXPECT_TRUE(m1.Matches(g_bar));
+  EXPECT_FALSE(m1.Matches(1));
+  EXPECT_EQ("g_bar or zero", Describe(m1));
+
+  // Using a polymorphic matcher to match a value type.
+  Matcher<double> m2 = ReferencesBarOrIsZero();
+  EXPECT_TRUE(m2.Matches(0.0));
+  EXPECT_FALSE(m2.Matches(0.1));
+  EXPECT_EQ("g_bar or zero", Describe(m2));
+}
+
+// Tests implementing a polymorphic matcher using MatchAndExplain().
+
+class PolymorphicIsEvenImpl {
+ public:
+  void DescribeTo(ostream* os) const { *os << "is even"; }
+
+  void DescribeNegationTo(ostream* os) const {
+    *os << "is odd";
+  }
+
+  template <typename T>
+  bool MatchAndExplain(const T& x, MatchResultListener* listener) const {
+    // Verifies that we can stream to the listener directly.
+    *listener << "% " << 2;
+    if (listener->stream() != nullptr) {
+      // Verifies that we can stream to the listener's underlying stream
+      // too.
+      *listener->stream() << " == " << (x % 2);
+    }
+    return (x % 2) == 0;
+  }
+};
+
+PolymorphicMatcher<PolymorphicIsEvenImpl> PolymorphicIsEven() {
+  return MakePolymorphicMatcher(PolymorphicIsEvenImpl());
+}
+
+TEST(MakePolymorphicMatcherTest, ConstructsMatcherUsingNewAPI) {
+  // Using PolymorphicIsEven() as a Matcher<int>.
+  const Matcher<int> m1 = PolymorphicIsEven();
+  EXPECT_TRUE(m1.Matches(42));
+  EXPECT_FALSE(m1.Matches(43));
+  EXPECT_EQ("is even", Describe(m1));
+
+  const Matcher<int> not_m1 = Not(m1);
+  EXPECT_EQ("is odd", Describe(not_m1));
+
+  EXPECT_EQ("% 2 == 0", Explain(m1, 42));
+
+  // Using PolymorphicIsEven() as a Matcher<char>.
+  const Matcher<char> m2 = PolymorphicIsEven();
+  EXPECT_TRUE(m2.Matches('\x42'));
+  EXPECT_FALSE(m2.Matches('\x43'));
+  EXPECT_EQ("is even", Describe(m2));
+
+  const Matcher<char> not_m2 = Not(m2);
+  EXPECT_EQ("is odd", Describe(not_m2));
+
+  EXPECT_EQ("% 2 == 0", Explain(m2, '\x42'));
+}
+
+// Tests that MatcherCast<T>(m) works when m is a polymorphic matcher.
+TEST(MatcherCastTest, FromPolymorphicMatcher) {
+  Matcher<int> m = MatcherCast<int>(Eq(5));
+  EXPECT_TRUE(m.Matches(5));
+  EXPECT_FALSE(m.Matches(6));
+}
+
+// For testing casting matchers between compatible types.
+class IntValue {
+ public:
+  // An int can be statically (although not implicitly) cast to a
+  // IntValue.
+  explicit IntValue(int a_value) : value_(a_value) {}
+
+  int value() const { return value_; }
+ private:
+  int value_;
+};
+
+// For testing casting matchers between compatible types.
+bool IsPositiveIntValue(const IntValue& foo) {
+  return foo.value() > 0;
+}
+
+// Tests that MatcherCast<T>(m) works when m is a Matcher<U> where T
+// can be statically converted to U.
+TEST(MatcherCastTest, FromCompatibleType) {
+  Matcher<double> m1 = Eq(2.0);
+  Matcher<int> m2 = MatcherCast<int>(m1);
+  EXPECT_TRUE(m2.Matches(2));
+  EXPECT_FALSE(m2.Matches(3));
+
+  Matcher<IntValue> m3 = Truly(IsPositiveIntValue);
+  Matcher<int> m4 = MatcherCast<int>(m3);
+  // In the following, the arguments 1 and 0 are statically converted
+  // to IntValue objects, and then tested by the IsPositiveIntValue()
+  // predicate.
+  EXPECT_TRUE(m4.Matches(1));
+  EXPECT_FALSE(m4.Matches(0));
+}
+
+// Tests that MatcherCast<T>(m) works when m is a Matcher<const T&>.
+TEST(MatcherCastTest, FromConstReferenceToNonReference) {
+  Matcher<const int&> m1 = Eq(0);
+  Matcher<int> m2 = MatcherCast<int>(m1);
+  EXPECT_TRUE(m2.Matches(0));
+  EXPECT_FALSE(m2.Matches(1));
+}
+
+// Tests that MatcherCast<T>(m) works when m is a Matcher<T&>.
+TEST(MatcherCastTest, FromReferenceToNonReference) {
+  Matcher<int&> m1 = Eq(0);
+  Matcher<int> m2 = MatcherCast<int>(m1);
+  EXPECT_TRUE(m2.Matches(0));
+  EXPECT_FALSE(m2.Matches(1));
+}
+
+// Tests that MatcherCast<const T&>(m) works when m is a Matcher<T>.
+TEST(MatcherCastTest, FromNonReferenceToConstReference) {
+  Matcher<int> m1 = Eq(0);
+  Matcher<const int&> m2 = MatcherCast<const int&>(m1);
+  EXPECT_TRUE(m2.Matches(0));
+  EXPECT_FALSE(m2.Matches(1));
+}
+
+// Tests that MatcherCast<T&>(m) works when m is a Matcher<T>.
+TEST(MatcherCastTest, FromNonReferenceToReference) {
+  Matcher<int> m1 = Eq(0);
+  Matcher<int&> m2 = MatcherCast<int&>(m1);
+  int n = 0;
+  EXPECT_TRUE(m2.Matches(n));
+  n = 1;
+  EXPECT_FALSE(m2.Matches(n));
+}
+
+// Tests that MatcherCast<T>(m) works when m is a Matcher<T>.
+TEST(MatcherCastTest, FromSameType) {
+  Matcher<int> m1 = Eq(0);
+  Matcher<int> m2 = MatcherCast<int>(m1);
+  EXPECT_TRUE(m2.Matches(0));
+  EXPECT_FALSE(m2.Matches(1));
+}
+
+// Tests that MatcherCast<T>(m) works when m is a value of the same type as the
+// value type of the Matcher.
+TEST(MatcherCastTest, FromAValue) {
+  Matcher<int> m = MatcherCast<int>(42);
+  EXPECT_TRUE(m.Matches(42));
+  EXPECT_FALSE(m.Matches(239));
+}
+
+// Tests that MatcherCast<T>(m) works when m is a value of the type implicitly
+// convertible to the value type of the Matcher.
+TEST(MatcherCastTest, FromAnImplicitlyConvertibleValue) {
+  const int kExpected = 'c';
+  Matcher<int> m = MatcherCast<int>('c');
+  EXPECT_TRUE(m.Matches(kExpected));
+  EXPECT_FALSE(m.Matches(kExpected + 1));
+}
+
+struct NonImplicitlyConstructibleTypeWithOperatorEq {
+  friend bool operator==(
+      const NonImplicitlyConstructibleTypeWithOperatorEq& /* ignored */,
+      int rhs) {
+    return 42 == rhs;
+  }
+  friend bool operator==(
+      int lhs,
+      const NonImplicitlyConstructibleTypeWithOperatorEq& /* ignored */) {
+    return lhs == 42;
+  }
+};
+
+// Tests that MatcherCast<T>(m) works when m is a neither a matcher nor
+// implicitly convertible to the value type of the Matcher, but the value type
+// of the matcher has operator==() overload accepting m.
+TEST(MatcherCastTest, NonImplicitlyConstructibleTypeWithOperatorEq) {
+  Matcher<NonImplicitlyConstructibleTypeWithOperatorEq> m1 =
+      MatcherCast<NonImplicitlyConstructibleTypeWithOperatorEq>(42);
+  EXPECT_TRUE(m1.Matches(NonImplicitlyConstructibleTypeWithOperatorEq()));
+
+  Matcher<NonImplicitlyConstructibleTypeWithOperatorEq> m2 =
+      MatcherCast<NonImplicitlyConstructibleTypeWithOperatorEq>(239);
+  EXPECT_FALSE(m2.Matches(NonImplicitlyConstructibleTypeWithOperatorEq()));
+
+  // When updating the following lines please also change the comment to
+  // namespace convertible_from_any.
+  Matcher<int> m3 =
+      MatcherCast<int>(NonImplicitlyConstructibleTypeWithOperatorEq());
+  EXPECT_TRUE(m3.Matches(42));
+  EXPECT_FALSE(m3.Matches(239));
+}
+
+// ConvertibleFromAny does not work with MSVC. resulting in
+// error C2440: 'initializing': cannot convert from 'Eq' to 'M'
+// No constructor could take the source type, or constructor overload
+// resolution was ambiguous
+
+#if !defined _MSC_VER
+
+// The below ConvertibleFromAny struct is implicitly constructible from anything
+// and when in the same namespace can interact with other tests. In particular,
+// if it is in the same namespace as other tests and one removes
+//   NonImplicitlyConstructibleTypeWithOperatorEq::operator==(int lhs, ...);
+// then the corresponding test still compiles (and it should not!) by implicitly
+// converting NonImplicitlyConstructibleTypeWithOperatorEq to ConvertibleFromAny
+// in m3.Matcher().
+namespace convertible_from_any {
+// Implicitly convertible from any type.
+struct ConvertibleFromAny {
+  ConvertibleFromAny(int a_value) : value(a_value) {}
+  template <typename T>
+  ConvertibleFromAny(const T& /*a_value*/) : value(-1) {
+    ADD_FAILURE() << "Conversion constructor called";
+  }
+  int value;
+};
+
+bool operator==(const ConvertibleFromAny& a, const ConvertibleFromAny& b) {
+  return a.value == b.value;
+}
+
+ostream& operator<<(ostream& os, const ConvertibleFromAny& a) {
+  return os << a.value;
+}
+
+TEST(MatcherCastTest, ConversionConstructorIsUsed) {
+  Matcher<ConvertibleFromAny> m = MatcherCast<ConvertibleFromAny>(1);
+  EXPECT_TRUE(m.Matches(ConvertibleFromAny(1)));
+  EXPECT_FALSE(m.Matches(ConvertibleFromAny(2)));
+}
+
+TEST(MatcherCastTest, FromConvertibleFromAny) {
+  Matcher<ConvertibleFromAny> m =
+      MatcherCast<ConvertibleFromAny>(Eq(ConvertibleFromAny(1)));
+  EXPECT_TRUE(m.Matches(ConvertibleFromAny(1)));
+  EXPECT_FALSE(m.Matches(ConvertibleFromAny(2)));
+}
+}  // namespace convertible_from_any
+
+#endif  // !defined _MSC_VER
+
+struct IntReferenceWrapper {
+  IntReferenceWrapper(const int& a_value) : value(&a_value) {}
+  const int* value;
+};
+
+bool operator==(const IntReferenceWrapper& a, const IntReferenceWrapper& b) {
+  return a.value == b.value;
+}
+
+TEST(MatcherCastTest, ValueIsNotCopied) {
+  int n = 42;
+  Matcher<IntReferenceWrapper> m = MatcherCast<IntReferenceWrapper>(n);
+  // Verify that the matcher holds a reference to n, not to its temporary copy.
+  EXPECT_TRUE(m.Matches(n));
+}
+
+class Base {
+ public:
+  virtual ~Base() {}
+  Base() {}
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(Base);
+};
+
+class Derived : public Base {
+ public:
+  Derived() : Base() {}
+  int i;
+};
+
+class OtherDerived : public Base {};
+
+// Tests that SafeMatcherCast<T>(m) works when m is a polymorphic matcher.
+TEST(SafeMatcherCastTest, FromPolymorphicMatcher) {
+  Matcher<char> m2 = SafeMatcherCast<char>(Eq(32));
+  EXPECT_TRUE(m2.Matches(' '));
+  EXPECT_FALSE(m2.Matches('\n'));
+}
+
+// Tests that SafeMatcherCast<T>(m) works when m is a Matcher<U> where
+// T and U are arithmetic types and T can be losslessly converted to
+// U.
+TEST(SafeMatcherCastTest, FromLosslesslyConvertibleArithmeticType) {
+  Matcher<double> m1 = DoubleEq(1.0);
+  Matcher<float> m2 = SafeMatcherCast<float>(m1);
+  EXPECT_TRUE(m2.Matches(1.0f));
+  EXPECT_FALSE(m2.Matches(2.0f));
+
+  Matcher<char> m3 = SafeMatcherCast<char>(TypedEq<int>('a'));
+  EXPECT_TRUE(m3.Matches('a'));
+  EXPECT_FALSE(m3.Matches('b'));
+}
+
+// Tests that SafeMatcherCast<T>(m) works when m is a Matcher<U> where T and U
+// are pointers or references to a derived and a base class, correspondingly.
+TEST(SafeMatcherCastTest, FromBaseClass) {
+  Derived d, d2;
+  Matcher<Base*> m1 = Eq(&d);
+  Matcher<Derived*> m2 = SafeMatcherCast<Derived*>(m1);
+  EXPECT_TRUE(m2.Matches(&d));
+  EXPECT_FALSE(m2.Matches(&d2));
+
+  Matcher<Base&> m3 = Ref(d);
+  Matcher<Derived&> m4 = SafeMatcherCast<Derived&>(m3);
+  EXPECT_TRUE(m4.Matches(d));
+  EXPECT_FALSE(m4.Matches(d2));
+}
+
+// Tests that SafeMatcherCast<T&>(m) works when m is a Matcher<const T&>.
+TEST(SafeMatcherCastTest, FromConstReferenceToReference) {
+  int n = 0;
+  Matcher<const int&> m1 = Ref(n);
+  Matcher<int&> m2 = SafeMatcherCast<int&>(m1);
+  int n1 = 0;
+  EXPECT_TRUE(m2.Matches(n));
+  EXPECT_FALSE(m2.Matches(n1));
+}
+
+// Tests that MatcherCast<const T&>(m) works when m is a Matcher<T>.
+TEST(SafeMatcherCastTest, FromNonReferenceToConstReference) {
+  Matcher<int> m1 = Eq(0);
+  Matcher<const int&> m2 = SafeMatcherCast<const int&>(m1);
+  EXPECT_TRUE(m2.Matches(0));
+  EXPECT_FALSE(m2.Matches(1));
+}
+
+// Tests that SafeMatcherCast<T&>(m) works when m is a Matcher<T>.
+TEST(SafeMatcherCastTest, FromNonReferenceToReference) {
+  Matcher<int> m1 = Eq(0);
+  Matcher<int&> m2 = SafeMatcherCast<int&>(m1);
+  int n = 0;
+  EXPECT_TRUE(m2.Matches(n));
+  n = 1;
+  EXPECT_FALSE(m2.Matches(n));
+}
+
+// Tests that SafeMatcherCast<T>(m) works when m is a Matcher<T>.
+TEST(SafeMatcherCastTest, FromSameType) {
+  Matcher<int> m1 = Eq(0);
+  Matcher<int> m2 = SafeMatcherCast<int>(m1);
+  EXPECT_TRUE(m2.Matches(0));
+  EXPECT_FALSE(m2.Matches(1));
+}
+
+#if !defined _MSC_VER
+
+namespace convertible_from_any {
+TEST(SafeMatcherCastTest, ConversionConstructorIsUsed) {
+  Matcher<ConvertibleFromAny> m = SafeMatcherCast<ConvertibleFromAny>(1);
+  EXPECT_TRUE(m.Matches(ConvertibleFromAny(1)));
+  EXPECT_FALSE(m.Matches(ConvertibleFromAny(2)));
+}
+
+TEST(SafeMatcherCastTest, FromConvertibleFromAny) {
+  Matcher<ConvertibleFromAny> m =
+      SafeMatcherCast<ConvertibleFromAny>(Eq(ConvertibleFromAny(1)));
+  EXPECT_TRUE(m.Matches(ConvertibleFromAny(1)));
+  EXPECT_FALSE(m.Matches(ConvertibleFromAny(2)));
+}
+}  // namespace convertible_from_any
+
+#endif  // !defined _MSC_VER
+
+TEST(SafeMatcherCastTest, ValueIsNotCopied) {
+  int n = 42;
+  Matcher<IntReferenceWrapper> m = SafeMatcherCast<IntReferenceWrapper>(n);
+  // Verify that the matcher holds a reference to n, not to its temporary copy.
+  EXPECT_TRUE(m.Matches(n));
+}
+
+TEST(ExpectThat, TakesLiterals) {
+  EXPECT_THAT(1, 1);
+  EXPECT_THAT(1.0, 1.0);
+  EXPECT_THAT(std::string(), "");
+}
+
+TEST(ExpectThat, TakesFunctions) {
+  struct Helper {
+    static void Func() {}
+  };
+  void (*func)() = Helper::Func;
+  EXPECT_THAT(func, Helper::Func);
+  EXPECT_THAT(func, &Helper::Func);
+}
+
+// Tests that A<T>() matches any value of type T.
+TEST(ATest, MatchesAnyValue) {
+  // Tests a matcher for a value type.
+  Matcher<double> m1 = A<double>();
+  EXPECT_TRUE(m1.Matches(91.43));
+  EXPECT_TRUE(m1.Matches(-15.32));
+
+  // Tests a matcher for a reference type.
+  int a = 2;
+  int b = -6;
+  Matcher<int&> m2 = A<int&>();
+  EXPECT_TRUE(m2.Matches(a));
+  EXPECT_TRUE(m2.Matches(b));
+}
+
+TEST(ATest, WorksForDerivedClass) {
+  Base base;
+  Derived derived;
+  EXPECT_THAT(&base, A<Base*>());
+  // This shouldn't compile: EXPECT_THAT(&base, A<Derived*>());
+  EXPECT_THAT(&derived, A<Base*>());
+  EXPECT_THAT(&derived, A<Derived*>());
+}
+
+// Tests that A<T>() describes itself properly.
+TEST(ATest, CanDescribeSelf) {
+  EXPECT_EQ("is anything", Describe(A<bool>()));
+}
+
+// Tests that An<T>() matches any value of type T.
+TEST(AnTest, MatchesAnyValue) {
+  // Tests a matcher for a value type.
+  Matcher<int> m1 = An<int>();
+  EXPECT_TRUE(m1.Matches(9143));
+  EXPECT_TRUE(m1.Matches(-1532));
+
+  // Tests a matcher for a reference type.
+  int a = 2;
+  int b = -6;
+  Matcher<int&> m2 = An<int&>();
+  EXPECT_TRUE(m2.Matches(a));
+  EXPECT_TRUE(m2.Matches(b));
+}
+
+// Tests that An<T>() describes itself properly.
+TEST(AnTest, CanDescribeSelf) {
+  EXPECT_EQ("is anything", Describe(An<int>()));
+}
+
+// Tests that _ can be used as a matcher for any type and matches any
+// value of that type.
+TEST(UnderscoreTest, MatchesAnyValue) {
+  // Uses _ as a matcher for a value type.
+  Matcher<int> m1 = _;
+  EXPECT_TRUE(m1.Matches(123));
+  EXPECT_TRUE(m1.Matches(-242));
+
+  // Uses _ as a matcher for a reference type.
+  bool a = false;
+  const bool b = true;
+  Matcher<const bool&> m2 = _;
+  EXPECT_TRUE(m2.Matches(a));
+  EXPECT_TRUE(m2.Matches(b));
+}
+
+// Tests that _ describes itself properly.
+TEST(UnderscoreTest, CanDescribeSelf) {
+  Matcher<int> m = _;
+  EXPECT_EQ("is anything", Describe(m));
+}
+
+// Tests that Eq(x) matches any value equal to x.
+TEST(EqTest, MatchesEqualValue) {
+  // 2 C-strings with same content but different addresses.
+  const char a1[] = "hi";
+  const char a2[] = "hi";
+
+  Matcher<const char*> m1 = Eq(a1);
+  EXPECT_TRUE(m1.Matches(a1));
+  EXPECT_FALSE(m1.Matches(a2));
+}
+
+// Tests that Eq(v) describes itself properly.
+
+class Unprintable {
+ public:
+  Unprintable() : c_('a') {}
+
+  bool operator==(const Unprintable& /* rhs */) const { return true; }
+  // -Wunused-private-field: dummy accessor for `c_`.
+  char dummy_c() { return c_; }
+ private:
+  char c_;
+};
+
+TEST(EqTest, CanDescribeSelf) {
+  Matcher<Unprintable> m = Eq(Unprintable());
+  EXPECT_EQ("is equal to 1-byte object <61>", Describe(m));
+}
+
+// Tests that Eq(v) can be used to match any type that supports
+// comparing with type T, where T is v's type.
+TEST(EqTest, IsPolymorphic) {
+  Matcher<int> m1 = Eq(1);
+  EXPECT_TRUE(m1.Matches(1));
+  EXPECT_FALSE(m1.Matches(2));
+
+  Matcher<char> m2 = Eq(1);
+  EXPECT_TRUE(m2.Matches('\1'));
+  EXPECT_FALSE(m2.Matches('a'));
+}
+
+// Tests that TypedEq<T>(v) matches values of type T that's equal to v.
+TEST(TypedEqTest, ChecksEqualityForGivenType) {
+  Matcher<char> m1 = TypedEq<char>('a');
+  EXPECT_TRUE(m1.Matches('a'));
+  EXPECT_FALSE(m1.Matches('b'));
+
+  Matcher<int> m2 = TypedEq<int>(6);
+  EXPECT_TRUE(m2.Matches(6));
+  EXPECT_FALSE(m2.Matches(7));
+}
+
+// Tests that TypedEq(v) describes itself properly.
+TEST(TypedEqTest, CanDescribeSelf) {
+  EXPECT_EQ("is equal to 2", Describe(TypedEq<int>(2)));
+}
+
+// Tests that TypedEq<T>(v) has type Matcher<T>.
+
+// Type<T>::IsTypeOf(v) compiles if and only if the type of value v is T, where
+// T is a "bare" type (i.e. not in the form of const U or U&).  If v's type is
+// not T, the compiler will generate a message about "undefined reference".
+template <typename T>
+struct Type {
+  static bool IsTypeOf(const T& /* v */) { return true; }
+
+  template <typename T2>
+  static void IsTypeOf(T2 v);
+};
+
+TEST(TypedEqTest, HasSpecifiedType) {
+  // Verfies that the type of TypedEq<T>(v) is Matcher<T>.
+  Type<Matcher<int> >::IsTypeOf(TypedEq<int>(5));
+  Type<Matcher<double> >::IsTypeOf(TypedEq<double>(5));
+}
+
+// Tests that Ge(v) matches anything >= v.
+TEST(GeTest, ImplementsGreaterThanOrEqual) {
+  Matcher<int> m1 = Ge(0);
+  EXPECT_TRUE(m1.Matches(1));
+  EXPECT_TRUE(m1.Matches(0));
+  EXPECT_FALSE(m1.Matches(-1));
+}
+
+// Tests that Ge(v) describes itself properly.
+TEST(GeTest, CanDescribeSelf) {
+  Matcher<int> m = Ge(5);
+  EXPECT_EQ("is >= 5", Describe(m));
+}
+
+// Tests that Gt(v) matches anything > v.
+TEST(GtTest, ImplementsGreaterThan) {
+  Matcher<double> m1 = Gt(0);
+  EXPECT_TRUE(m1.Matches(1.0));
+  EXPECT_FALSE(m1.Matches(0.0));
+  EXPECT_FALSE(m1.Matches(-1.0));
+}
+
+// Tests that Gt(v) describes itself properly.
+TEST(GtTest, CanDescribeSelf) {
+  Matcher<int> m = Gt(5);
+  EXPECT_EQ("is > 5", Describe(m));
+}
+
+// Tests that Le(v) matches anything <= v.
+TEST(LeTest, ImplementsLessThanOrEqual) {
+  Matcher<char> m1 = Le('b');
+  EXPECT_TRUE(m1.Matches('a'));
+  EXPECT_TRUE(m1.Matches('b'));
+  EXPECT_FALSE(m1.Matches('c'));
+}
+
+// Tests that Le(v) describes itself properly.
+TEST(LeTest, CanDescribeSelf) {
+  Matcher<int> m = Le(5);
+  EXPECT_EQ("is <= 5", Describe(m));
+}
+
+// Tests that Lt(v) matches anything < v.
+TEST(LtTest, ImplementsLessThan) {
+  Matcher<const std::string&> m1 = Lt("Hello");
+  EXPECT_TRUE(m1.Matches("Abc"));
+  EXPECT_FALSE(m1.Matches("Hello"));
+  EXPECT_FALSE(m1.Matches("Hello, world!"));
+}
+
+// Tests that Lt(v) describes itself properly.
+TEST(LtTest, CanDescribeSelf) {
+  Matcher<int> m = Lt(5);
+  EXPECT_EQ("is < 5", Describe(m));
+}
+
+// Tests that Ne(v) matches anything != v.
+TEST(NeTest, ImplementsNotEqual) {
+  Matcher<int> m1 = Ne(0);
+  EXPECT_TRUE(m1.Matches(1));
+  EXPECT_TRUE(m1.Matches(-1));
+  EXPECT_FALSE(m1.Matches(0));
+}
+
+// Tests that Ne(v) describes itself properly.
+TEST(NeTest, CanDescribeSelf) {
+  Matcher<int> m = Ne(5);
+  EXPECT_EQ("isn't equal to 5", Describe(m));
+}
+
+class MoveOnly {
+ public:
+  explicit MoveOnly(int i) : i_(i) {}
+  MoveOnly(const MoveOnly&) = delete;
+  MoveOnly(MoveOnly&&) = default;
+  MoveOnly& operator=(const MoveOnly&) = delete;
+  MoveOnly& operator=(MoveOnly&&) = default;
+
+  bool operator==(const MoveOnly& other) const { return i_ == other.i_; }
+  bool operator!=(const MoveOnly& other) const { return i_ != other.i_; }
+  bool operator<(const MoveOnly& other) const { return i_ < other.i_; }
+  bool operator<=(const MoveOnly& other) const { return i_ <= other.i_; }
+  bool operator>(const MoveOnly& other) const { return i_ > other.i_; }
+  bool operator>=(const MoveOnly& other) const { return i_ >= other.i_; }
+
+ private:
+  int i_;
+};
+
+struct MoveHelper {
+  MOCK_METHOD1(Call, void(MoveOnly));
+};
+
+TEST(ComparisonBaseTest, WorksWithMoveOnly) {
+  MoveOnly m{0};
+  MoveHelper helper;
+
+  EXPECT_CALL(helper, Call(Eq(ByRef(m))));
+  helper.Call(MoveOnly(0));
+  EXPECT_CALL(helper, Call(Ne(ByRef(m))));
+  helper.Call(MoveOnly(1));
+  EXPECT_CALL(helper, Call(Le(ByRef(m))));
+  helper.Call(MoveOnly(0));
+  EXPECT_CALL(helper, Call(Lt(ByRef(m))));
+  helper.Call(MoveOnly(-1));
+  EXPECT_CALL(helper, Call(Ge(ByRef(m))));
+  helper.Call(MoveOnly(0));
+  EXPECT_CALL(helper, Call(Gt(ByRef(m))));
+  helper.Call(MoveOnly(1));
+}
+
+// Tests that IsNull() matches any NULL pointer of any type.
+TEST(IsNullTest, MatchesNullPointer) {
+  Matcher<int*> m1 = IsNull();
+  int* p1 = nullptr;
+  int n = 0;
+  EXPECT_TRUE(m1.Matches(p1));
+  EXPECT_FALSE(m1.Matches(&n));
+
+  Matcher<const char*> m2 = IsNull();
+  const char* p2 = nullptr;
+  EXPECT_TRUE(m2.Matches(p2));
+  EXPECT_FALSE(m2.Matches("hi"));
+
+  Matcher<void*> m3 = IsNull();
+  void* p3 = nullptr;
+  EXPECT_TRUE(m3.Matches(p3));
+  EXPECT_FALSE(m3.Matches(reinterpret_cast<void*>(0xbeef)));
+}
+
+TEST(IsNullTest, StdFunction) {
+  const Matcher<std::function<void()>> m = IsNull();
+
+  EXPECT_TRUE(m.Matches(std::function<void()>()));
+  EXPECT_FALSE(m.Matches([]{}));
+}
+
+// Tests that IsNull() describes itself properly.
+TEST(IsNullTest, CanDescribeSelf) {
+  Matcher<int*> m = IsNull();
+  EXPECT_EQ("is NULL", Describe(m));
+  EXPECT_EQ("isn't NULL", DescribeNegation(m));
+}
+
+// Tests that NotNull() matches any non-NULL pointer of any type.
+TEST(NotNullTest, MatchesNonNullPointer) {
+  Matcher<int*> m1 = NotNull();
+  int* p1 = nullptr;
+  int n = 0;
+  EXPECT_FALSE(m1.Matches(p1));
+  EXPECT_TRUE(m1.Matches(&n));
+
+  Matcher<const char*> m2 = NotNull();
+  const char* p2 = nullptr;
+  EXPECT_FALSE(m2.Matches(p2));
+  EXPECT_TRUE(m2.Matches("hi"));
+}
+
+TEST(NotNullTest, LinkedPtr) {
+  const Matcher<std::shared_ptr<int>> m = NotNull();
+  const std::shared_ptr<int> null_p;
+  const std::shared_ptr<int> non_null_p(new int);
+
+  EXPECT_FALSE(m.Matches(null_p));
+  EXPECT_TRUE(m.Matches(non_null_p));
+}
+
+TEST(NotNullTest, ReferenceToConstLinkedPtr) {
+  const Matcher<const std::shared_ptr<double>&> m = NotNull();
+  const std::shared_ptr<double> null_p;
+  const std::shared_ptr<double> non_null_p(new double);
+
+  EXPECT_FALSE(m.Matches(null_p));
+  EXPECT_TRUE(m.Matches(non_null_p));
+}
+
+TEST(NotNullTest, StdFunction) {
+  const Matcher<std::function<void()>> m = NotNull();
+
+  EXPECT_TRUE(m.Matches([]{}));
+  EXPECT_FALSE(m.Matches(std::function<void()>()));
+}
+
+// Tests that NotNull() describes itself properly.
+TEST(NotNullTest, CanDescribeSelf) {
+  Matcher<int*> m = NotNull();
+  EXPECT_EQ("isn't NULL", Describe(m));
+}
+
+// Tests that Ref(variable) matches an argument that references
+// 'variable'.
+TEST(RefTest, MatchesSameVariable) {
+  int a = 0;
+  int b = 0;
+  Matcher<int&> m = Ref(a);
+  EXPECT_TRUE(m.Matches(a));
+  EXPECT_FALSE(m.Matches(b));
+}
+
+// Tests that Ref(variable) describes itself properly.
+TEST(RefTest, CanDescribeSelf) {
+  int n = 5;
+  Matcher<int&> m = Ref(n);
+  stringstream ss;
+  ss << "references the variable @" << &n << " 5";
+  EXPECT_EQ(ss.str(), Describe(m));
+}
+
+// Test that Ref(non_const_varialbe) can be used as a matcher for a
+// const reference.
+TEST(RefTest, CanBeUsedAsMatcherForConstReference) {
+  int a = 0;
+  int b = 0;
+  Matcher<const int&> m = Ref(a);
+  EXPECT_TRUE(m.Matches(a));
+  EXPECT_FALSE(m.Matches(b));
+}
+
+// Tests that Ref(variable) is covariant, i.e. Ref(derived) can be
+// used wherever Ref(base) can be used (Ref(derived) is a sub-type
+// of Ref(base), but not vice versa.
+
+TEST(RefTest, IsCovariant) {
+  Base base, base2;
+  Derived derived;
+  Matcher<const Base&> m1 = Ref(base);
+  EXPECT_TRUE(m1.Matches(base));
+  EXPECT_FALSE(m1.Matches(base2));
+  EXPECT_FALSE(m1.Matches(derived));
+
+  m1 = Ref(derived);
+  EXPECT_TRUE(m1.Matches(derived));
+  EXPECT_FALSE(m1.Matches(base));
+  EXPECT_FALSE(m1.Matches(base2));
+}
+
+TEST(RefTest, ExplainsResult) {
+  int n = 0;
+  EXPECT_THAT(Explain(Matcher<const int&>(Ref(n)), n),
+              StartsWith("which is located @"));
+
+  int m = 0;
+  EXPECT_THAT(Explain(Matcher<const int&>(Ref(n)), m),
+              StartsWith("which is located @"));
+}
+
+// Tests string comparison matchers.
+
+TEST(StrEqTest, MatchesEqualString) {
+  Matcher<const char*> m = StrEq(std::string("Hello"));
+  EXPECT_TRUE(m.Matches("Hello"));
+  EXPECT_FALSE(m.Matches("hello"));
+  EXPECT_FALSE(m.Matches(nullptr));
+
+  Matcher<const std::string&> m2 = StrEq("Hello");
+  EXPECT_TRUE(m2.Matches("Hello"));
+  EXPECT_FALSE(m2.Matches("Hi"));
+
+#if GTEST_HAS_ABSL
+  Matcher<const absl::string_view&> m3 = StrEq("Hello");
+  EXPECT_TRUE(m3.Matches(absl::string_view("Hello")));
+  EXPECT_FALSE(m3.Matches(absl::string_view("hello")));
+  EXPECT_FALSE(m3.Matches(absl::string_view()));
+
+  Matcher<const absl::string_view&> m_empty = StrEq("");
+  EXPECT_TRUE(m_empty.Matches(absl::string_view("")));
+  EXPECT_TRUE(m_empty.Matches(absl::string_view()));
+  EXPECT_FALSE(m_empty.Matches(absl::string_view("hello")));
+#endif  // GTEST_HAS_ABSL
+}
+
+TEST(StrEqTest, CanDescribeSelf) {
+  Matcher<std::string> m = StrEq("Hi-\'\"?\\\a\b\f\n\r\t\v\xD3");
+  EXPECT_EQ("is equal to \"Hi-\'\\\"?\\\\\\a\\b\\f\\n\\r\\t\\v\\xD3\"",
+      Describe(m));
+
+  std::string str("01204500800");
+  str[3] = '\0';
+  Matcher<std::string> m2 = StrEq(str);
+  EXPECT_EQ("is equal to \"012\\04500800\"", Describe(m2));
+  str[0] = str[6] = str[7] = str[9] = str[10] = '\0';
+  Matcher<std::string> m3 = StrEq(str);
+  EXPECT_EQ("is equal to \"\\012\\045\\0\\08\\0\\0\"", Describe(m3));
+}
+
+TEST(StrNeTest, MatchesUnequalString) {
+  Matcher<const char*> m = StrNe("Hello");
+  EXPECT_TRUE(m.Matches(""));
+  EXPECT_TRUE(m.Matches(nullptr));
+  EXPECT_FALSE(m.Matches("Hello"));
+
+  Matcher<std::string> m2 = StrNe(std::string("Hello"));
+  EXPECT_TRUE(m2.Matches("hello"));
+  EXPECT_FALSE(m2.Matches("Hello"));
+
+#if GTEST_HAS_ABSL
+  Matcher<const absl::string_view> m3 = StrNe("Hello");
+  EXPECT_TRUE(m3.Matches(absl::string_view("")));
+  EXPECT_TRUE(m3.Matches(absl::string_view()));
+  EXPECT_FALSE(m3.Matches(absl::string_view("Hello")));
+#endif  // GTEST_HAS_ABSL
+}
+
+TEST(StrNeTest, CanDescribeSelf) {
+  Matcher<const char*> m = StrNe("Hi");
+  EXPECT_EQ("isn't equal to \"Hi\"", Describe(m));
+}
+
+TEST(StrCaseEqTest, MatchesEqualStringIgnoringCase) {
+  Matcher<const char*> m = StrCaseEq(std::string("Hello"));
+  EXPECT_TRUE(m.Matches("Hello"));
+  EXPECT_TRUE(m.Matches("hello"));
+  EXPECT_FALSE(m.Matches("Hi"));
+  EXPECT_FALSE(m.Matches(nullptr));
+
+  Matcher<const std::string&> m2 = StrCaseEq("Hello");
+  EXPECT_TRUE(m2.Matches("hello"));
+  EXPECT_FALSE(m2.Matches("Hi"));
+
+#if GTEST_HAS_ABSL
+  Matcher<const absl::string_view&> m3 = StrCaseEq(std::string("Hello"));
+  EXPECT_TRUE(m3.Matches(absl::string_view("Hello")));
+  EXPECT_TRUE(m3.Matches(absl::string_view("hello")));
+  EXPECT_FALSE(m3.Matches(absl::string_view("Hi")));
+  EXPECT_FALSE(m3.Matches(absl::string_view()));
+#endif  // GTEST_HAS_ABSL
+}
+
+TEST(StrCaseEqTest, MatchesEqualStringWith0IgnoringCase) {
+  std::string str1("oabocdooeoo");
+  std::string str2("OABOCDOOEOO");
+  Matcher<const std::string&> m0 = StrCaseEq(str1);
+  EXPECT_FALSE(m0.Matches(str2 + std::string(1, '\0')));
+
+  str1[3] = str2[3] = '\0';
+  Matcher<const std::string&> m1 = StrCaseEq(str1);
+  EXPECT_TRUE(m1.Matches(str2));
+
+  str1[0] = str1[6] = str1[7] = str1[10] = '\0';
+  str2[0] = str2[6] = str2[7] = str2[10] = '\0';
+  Matcher<const std::string&> m2 = StrCaseEq(str1);
+  str1[9] = str2[9] = '\0';
+  EXPECT_FALSE(m2.Matches(str2));
+
+  Matcher<const std::string&> m3 = StrCaseEq(str1);
+  EXPECT_TRUE(m3.Matches(str2));
+
+  EXPECT_FALSE(m3.Matches(str2 + "x"));
+  str2.append(1, '\0');
+  EXPECT_FALSE(m3.Matches(str2));
+  EXPECT_FALSE(m3.Matches(std::string(str2, 0, 9)));
+}
+
+TEST(StrCaseEqTest, CanDescribeSelf) {
+  Matcher<std::string> m = StrCaseEq("Hi");
+  EXPECT_EQ("is equal to (ignoring case) \"Hi\"", Describe(m));
+}
+
+TEST(StrCaseNeTest, MatchesUnequalStringIgnoringCase) {
+  Matcher<const char*> m = StrCaseNe("Hello");
+  EXPECT_TRUE(m.Matches("Hi"));
+  EXPECT_TRUE(m.Matches(nullptr));
+  EXPECT_FALSE(m.Matches("Hello"));
+  EXPECT_FALSE(m.Matches("hello"));
+
+  Matcher<std::string> m2 = StrCaseNe(std::string("Hello"));
+  EXPECT_TRUE(m2.Matches(""));
+  EXPECT_FALSE(m2.Matches("Hello"));
+
+#if GTEST_HAS_ABSL
+  Matcher<const absl::string_view> m3 = StrCaseNe("Hello");
+  EXPECT_TRUE(m3.Matches(absl::string_view("Hi")));
+  EXPECT_TRUE(m3.Matches(absl::string_view()));
+  EXPECT_FALSE(m3.Matches(absl::string_view("Hello")));
+  EXPECT_FALSE(m3.Matches(absl::string_view("hello")));
+#endif  // GTEST_HAS_ABSL
+}
+
+TEST(StrCaseNeTest, CanDescribeSelf) {
+  Matcher<const char*> m = StrCaseNe("Hi");
+  EXPECT_EQ("isn't equal to (ignoring case) \"Hi\"", Describe(m));
+}
+
+// Tests that HasSubstr() works for matching string-typed values.
+TEST(HasSubstrTest, WorksForStringClasses) {
+  const Matcher<std::string> m1 = HasSubstr("foo");
+  EXPECT_TRUE(m1.Matches(std::string("I love food.")));
+  EXPECT_FALSE(m1.Matches(std::string("tofo")));
+
+  const Matcher<const std::string&> m2 = HasSubstr("foo");
+  EXPECT_TRUE(m2.Matches(std::string("I love food.")));
+  EXPECT_FALSE(m2.Matches(std::string("tofo")));
+
+  const Matcher<std::string> m_empty = HasSubstr("");
+  EXPECT_TRUE(m_empty.Matches(std::string()));
+  EXPECT_TRUE(m_empty.Matches(std::string("not empty")));
+}
+
+// Tests that HasSubstr() works for matching C-string-typed values.
+TEST(HasSubstrTest, WorksForCStrings) {
+  const Matcher<char*> m1 = HasSubstr("foo");
+  EXPECT_TRUE(m1.Matches(const_cast<char*>("I love food.")));
+  EXPECT_FALSE(m1.Matches(const_cast<char*>("tofo")));
+  EXPECT_FALSE(m1.Matches(nullptr));
+
+  const Matcher<const char*> m2 = HasSubstr("foo");
+  EXPECT_TRUE(m2.Matches("I love food."));
+  EXPECT_FALSE(m2.Matches("tofo"));
+  EXPECT_FALSE(m2.Matches(nullptr));
+
+  const Matcher<const char*> m_empty = HasSubstr("");
+  EXPECT_TRUE(m_empty.Matches("not empty"));
+  EXPECT_TRUE(m_empty.Matches(""));
+  EXPECT_FALSE(m_empty.Matches(nullptr));
+}
+
+#if GTEST_HAS_ABSL
+// Tests that HasSubstr() works for matching absl::string_view-typed values.
+TEST(HasSubstrTest, WorksForStringViewClasses) {
+  const Matcher<absl::string_view> m1 = HasSubstr("foo");
+  EXPECT_TRUE(m1.Matches(absl::string_view("I love food.")));
+  EXPECT_FALSE(m1.Matches(absl::string_view("tofo")));
+  EXPECT_FALSE(m1.Matches(absl::string_view()));
+
+  const Matcher<const absl::string_view&> m2 = HasSubstr("foo");
+  EXPECT_TRUE(m2.Matches(absl::string_view("I love food.")));
+  EXPECT_FALSE(m2.Matches(absl::string_view("tofo")));
+  EXPECT_FALSE(m2.Matches(absl::string_view()));
+
+  const Matcher<const absl::string_view&> m3 = HasSubstr("");
+  EXPECT_TRUE(m3.Matches(absl::string_view("foo")));
+  EXPECT_TRUE(m3.Matches(absl::string_view("")));
+  EXPECT_TRUE(m3.Matches(absl::string_view()));
+}
+#endif  // GTEST_HAS_ABSL
+
+// Tests that HasSubstr(s) describes itself properly.
+TEST(HasSubstrTest, CanDescribeSelf) {
+  Matcher<std::string> m = HasSubstr("foo\n\"");
+  EXPECT_EQ("has substring \"foo\\n\\\"\"", Describe(m));
+}
+
+TEST(KeyTest, CanDescribeSelf) {
+  Matcher<const pair<std::string, int>&> m = Key("foo");
+  EXPECT_EQ("has a key that is equal to \"foo\"", Describe(m));
+  EXPECT_EQ("doesn't have a key that is equal to \"foo\"", DescribeNegation(m));
+}
+
+TEST(KeyTest, ExplainsResult) {
+  Matcher<pair<int, bool> > m = Key(GreaterThan(10));
+  EXPECT_EQ("whose first field is a value which is 5 less than 10",
+            Explain(m, make_pair(5, true)));
+  EXPECT_EQ("whose first field is a value which is 5 more than 10",
+            Explain(m, make_pair(15, true)));
+}
+
+TEST(KeyTest, MatchesCorrectly) {
+  pair<int, std::string> p(25, "foo");
+  EXPECT_THAT(p, Key(25));
+  EXPECT_THAT(p, Not(Key(42)));
+  EXPECT_THAT(p, Key(Ge(20)));
+  EXPECT_THAT(p, Not(Key(Lt(25))));
+}
+
+TEST(KeyTest, WorksWithMoveOnly) {
+  pair<std::unique_ptr<int>, std::unique_ptr<int>> p;
+  EXPECT_THAT(p, Key(Eq(nullptr)));
+}
+
+template <size_t I>
+struct Tag {};
+
+struct PairWithGet {
+  int member_1;
+  std::string member_2;
+  using first_type = int;
+  using second_type = std::string;
+
+  const int& GetImpl(Tag<0>) const { return member_1; }
+  const std::string& GetImpl(Tag<1>) const { return member_2; }
+};
+template <size_t I>
+auto get(const PairWithGet& value) -> decltype(value.GetImpl(Tag<I>())) {
+  return value.GetImpl(Tag<I>());
+}
+TEST(PairTest, MatchesPairWithGetCorrectly) {
+  PairWithGet p{25, "foo"};
+  EXPECT_THAT(p, Key(25));
+  EXPECT_THAT(p, Not(Key(42)));
+  EXPECT_THAT(p, Key(Ge(20)));
+  EXPECT_THAT(p, Not(Key(Lt(25))));
+
+  std::vector<PairWithGet> v = {{11, "Foo"}, {29, "gMockIsBestMock"}};
+  EXPECT_THAT(v, Contains(Key(29)));
+}
+
+TEST(KeyTest, SafelyCastsInnerMatcher) {
+  Matcher<int> is_positive = Gt(0);
+  Matcher<int> is_negative = Lt(0);
+  pair<char, bool> p('a', true);
+  EXPECT_THAT(p, Key(is_positive));
+  EXPECT_THAT(p, Not(Key(is_negative)));
+}
+
+TEST(KeyTest, InsideContainsUsingMap) {
+  map<int, char> container;
+  container.insert(make_pair(1, 'a'));
+  container.insert(make_pair(2, 'b'));
+  container.insert(make_pair(4, 'c'));
+  EXPECT_THAT(container, Contains(Key(1)));
+  EXPECT_THAT(container, Not(Contains(Key(3))));
+}
+
+TEST(KeyTest, InsideContainsUsingMultimap) {
+  multimap<int, char> container;
+  container.insert(make_pair(1, 'a'));
+  container.insert(make_pair(2, 'b'));
+  container.insert(make_pair(4, 'c'));
+
+  EXPECT_THAT(container, Not(Contains(Key(25))));
+  container.insert(make_pair(25, 'd'));
+  EXPECT_THAT(container, Contains(Key(25)));
+  container.insert(make_pair(25, 'e'));
+  EXPECT_THAT(container, Contains(Key(25)));
+
+  EXPECT_THAT(container, Contains(Key(1)));
+  EXPECT_THAT(container, Not(Contains(Key(3))));
+}
+
+TEST(PairTest, Typing) {
+  // Test verifies the following type conversions can be compiled.
+  Matcher<const pair<const char*, int>&> m1 = Pair("foo", 42);
+  Matcher<const pair<const char*, int> > m2 = Pair("foo", 42);
+  Matcher<pair<const char*, int> > m3 = Pair("foo", 42);
+
+  Matcher<pair<int, const std::string> > m4 = Pair(25, "42");
+  Matcher<pair<const std::string, int> > m5 = Pair("25", 42);
+}
+
+TEST(PairTest, CanDescribeSelf) {
+  Matcher<const pair<std::string, int>&> m1 = Pair("foo", 42);
+  EXPECT_EQ("has a first field that is equal to \"foo\""
+            ", and has a second field that is equal to 42",
+            Describe(m1));
+  EXPECT_EQ("has a first field that isn't equal to \"foo\""
+            ", or has a second field that isn't equal to 42",
+            DescribeNegation(m1));
+  // Double and triple negation (1 or 2 times not and description of negation).
+  Matcher<const pair<int, int>&> m2 = Not(Pair(Not(13), 42));
+  EXPECT_EQ("has a first field that isn't equal to 13"
+            ", and has a second field that is equal to 42",
+            DescribeNegation(m2));
+}
+
+TEST(PairTest, CanExplainMatchResultTo) {
+  // If neither field matches, Pair() should explain about the first
+  // field.
+  const Matcher<pair<int, int> > m = Pair(GreaterThan(0), GreaterThan(0));
+  EXPECT_EQ("whose first field does not match, which is 1 less than 0",
+            Explain(m, make_pair(-1, -2)));
+
+  // If the first field matches but the second doesn't, Pair() should
+  // explain about the second field.
+  EXPECT_EQ("whose second field does not match, which is 2 less than 0",
+            Explain(m, make_pair(1, -2)));
+
+  // If the first field doesn't match but the second does, Pair()
+  // should explain about the first field.
+  EXPECT_EQ("whose first field does not match, which is 1 less than 0",
+            Explain(m, make_pair(-1, 2)));
+
+  // If both fields match, Pair() should explain about them both.
+  EXPECT_EQ("whose both fields match, where the first field is a value "
+            "which is 1 more than 0, and the second field is a value "
+            "which is 2 more than 0",
+            Explain(m, make_pair(1, 2)));
+
+  // If only the first match has an explanation, only this explanation should
+  // be printed.
+  const Matcher<pair<int, int> > explain_first = Pair(GreaterThan(0), 0);
+  EXPECT_EQ("whose both fields match, where the first field is a value "
+            "which is 1 more than 0",
+            Explain(explain_first, make_pair(1, 0)));
+
+  // If only the second match has an explanation, only this explanation should
+  // be printed.
+  const Matcher<pair<int, int> > explain_second = Pair(0, GreaterThan(0));
+  EXPECT_EQ("whose both fields match, where the second field is a value "
+            "which is 1 more than 0",
+            Explain(explain_second, make_pair(0, 1)));
+}
+
+TEST(PairTest, MatchesCorrectly) {
+  pair<int, std::string> p(25, "foo");
+
+  // Both fields match.
+  EXPECT_THAT(p, Pair(25, "foo"));
+  EXPECT_THAT(p, Pair(Ge(20), HasSubstr("o")));
+
+  // 'first' doesnt' match, but 'second' matches.
+  EXPECT_THAT(p, Not(Pair(42, "foo")));
+  EXPECT_THAT(p, Not(Pair(Lt(25), "foo")));
+
+  // 'first' matches, but 'second' doesn't match.
+  EXPECT_THAT(p, Not(Pair(25, "bar")));
+  EXPECT_THAT(p, Not(Pair(25, Not("foo"))));
+
+  // Neither field matches.
+  EXPECT_THAT(p, Not(Pair(13, "bar")));
+  EXPECT_THAT(p, Not(Pair(Lt(13), HasSubstr("a"))));
+}
+
+TEST(PairTest, WorksWithMoveOnly) {
+  pair<std::unique_ptr<int>, std::unique_ptr<int>> p;
+  p.second.reset(new int(7));
+  EXPECT_THAT(p, Pair(Eq(nullptr), Ne(nullptr)));
+}
+
+TEST(PairTest, SafelyCastsInnerMatchers) {
+  Matcher<int> is_positive = Gt(0);
+  Matcher<int> is_negative = Lt(0);
+  pair<char, bool> p('a', true);
+  EXPECT_THAT(p, Pair(is_positive, _));
+  EXPECT_THAT(p, Not(Pair(is_negative, _)));
+  EXPECT_THAT(p, Pair(_, is_positive));
+  EXPECT_THAT(p, Not(Pair(_, is_negative)));
+}
+
+TEST(PairTest, InsideContainsUsingMap) {
+  map<int, char> container;
+  container.insert(make_pair(1, 'a'));
+  container.insert(make_pair(2, 'b'));
+  container.insert(make_pair(4, 'c'));
+  EXPECT_THAT(container, Contains(Pair(1, 'a')));
+  EXPECT_THAT(container, Contains(Pair(1, _)));
+  EXPECT_THAT(container, Contains(Pair(_, 'a')));
+  EXPECT_THAT(container, Not(Contains(Pair(3, _))));
+}
+
+TEST(ContainsTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(Contains(Pointee(2))));
+  helper.Call(MakeUniquePtrs({1, 2}));
+}
+
+TEST(PairTest, UseGetInsteadOfMembers) {
+  PairWithGet pair{7, "ABC"};
+  EXPECT_THAT(pair, Pair(7, "ABC"));
+  EXPECT_THAT(pair, Pair(Ge(7), HasSubstr("AB")));
+  EXPECT_THAT(pair, Not(Pair(Lt(7), "ABC")));
+
+  std::vector<PairWithGet> v = {{11, "Foo"}, {29, "gMockIsBestMock"}};
+  EXPECT_THAT(v,
+              ElementsAre(Pair(11, std::string("Foo")), Pair(Ge(10), Not(""))));
+}
+
+// Tests StartsWith(s).
+
+TEST(StartsWithTest, MatchesStringWithGivenPrefix) {
+  const Matcher<const char*> m1 = StartsWith(std::string(""));
+  EXPECT_TRUE(m1.Matches("Hi"));
+  EXPECT_TRUE(m1.Matches(""));
+  EXPECT_FALSE(m1.Matches(nullptr));
+
+  const Matcher<const std::string&> m2 = StartsWith("Hi");
+  EXPECT_TRUE(m2.Matches("Hi"));
+  EXPECT_TRUE(m2.Matches("Hi Hi!"));
+  EXPECT_TRUE(m2.Matches("High"));
+  EXPECT_FALSE(m2.Matches("H"));
+  EXPECT_FALSE(m2.Matches(" Hi"));
+
+#if GTEST_HAS_ABSL
+  const Matcher<absl::string_view> m_empty = StartsWith("");
+  EXPECT_TRUE(m_empty.Matches(absl::string_view()));
+  EXPECT_TRUE(m_empty.Matches(absl::string_view("")));
+  EXPECT_TRUE(m_empty.Matches(absl::string_view("not empty")));
+#endif  // GTEST_HAS_ABSL
+}
+
+TEST(StartsWithTest, CanDescribeSelf) {
+  Matcher<const std::string> m = StartsWith("Hi");
+  EXPECT_EQ("starts with \"Hi\"", Describe(m));
+}
+
+// Tests EndsWith(s).
+
+TEST(EndsWithTest, MatchesStringWithGivenSuffix) {
+  const Matcher<const char*> m1 = EndsWith("");
+  EXPECT_TRUE(m1.Matches("Hi"));
+  EXPECT_TRUE(m1.Matches(""));
+  EXPECT_FALSE(m1.Matches(nullptr));
+
+  const Matcher<const std::string&> m2 = EndsWith(std::string("Hi"));
+  EXPECT_TRUE(m2.Matches("Hi"));
+  EXPECT_TRUE(m2.Matches("Wow Hi Hi"));
+  EXPECT_TRUE(m2.Matches("Super Hi"));
+  EXPECT_FALSE(m2.Matches("i"));
+  EXPECT_FALSE(m2.Matches("Hi "));
+
+#if GTEST_HAS_ABSL
+  const Matcher<const absl::string_view&> m4 = EndsWith("");
+  EXPECT_TRUE(m4.Matches("Hi"));
+  EXPECT_TRUE(m4.Matches(""));
+  EXPECT_TRUE(m4.Matches(absl::string_view()));
+  EXPECT_TRUE(m4.Matches(absl::string_view("")));
+#endif  // GTEST_HAS_ABSL
+}
+
+TEST(EndsWithTest, CanDescribeSelf) {
+  Matcher<const std::string> m = EndsWith("Hi");
+  EXPECT_EQ("ends with \"Hi\"", Describe(m));
+}
+
+// Tests MatchesRegex().
+
+TEST(MatchesRegexTest, MatchesStringMatchingGivenRegex) {
+  const Matcher<const char*> m1 = MatchesRegex("a.*z");
+  EXPECT_TRUE(m1.Matches("az"));
+  EXPECT_TRUE(m1.Matches("abcz"));
+  EXPECT_FALSE(m1.Matches(nullptr));
+
+  const Matcher<const std::string&> m2 = MatchesRegex(new RE("a.*z"));
+  EXPECT_TRUE(m2.Matches("azbz"));
+  EXPECT_FALSE(m2.Matches("az1"));
+  EXPECT_FALSE(m2.Matches("1az"));
+
+#if GTEST_HAS_ABSL
+  const Matcher<const absl::string_view&> m3 = MatchesRegex("a.*z");
+  EXPECT_TRUE(m3.Matches(absl::string_view("az")));
+  EXPECT_TRUE(m3.Matches(absl::string_view("abcz")));
+  EXPECT_FALSE(m3.Matches(absl::string_view("1az")));
+  EXPECT_FALSE(m3.Matches(absl::string_view()));
+  const Matcher<const absl::string_view&> m4 = MatchesRegex("");
+  EXPECT_TRUE(m4.Matches(absl::string_view("")));
+  EXPECT_TRUE(m4.Matches(absl::string_view()));
+#endif  // GTEST_HAS_ABSL
+}
+
+TEST(MatchesRegexTest, CanDescribeSelf) {
+  Matcher<const std::string> m1 = MatchesRegex(std::string("Hi.*"));
+  EXPECT_EQ("matches regular expression \"Hi.*\"", Describe(m1));
+
+  Matcher<const char*> m2 = MatchesRegex(new RE("a.*"));
+  EXPECT_EQ("matches regular expression \"a.*\"", Describe(m2));
+
+#if GTEST_HAS_ABSL
+  Matcher<const absl::string_view> m3 = MatchesRegex(new RE("0.*"));
+  EXPECT_EQ("matches regular expression \"0.*\"", Describe(m3));
+#endif  // GTEST_HAS_ABSL
+}
+
+// Tests ContainsRegex().
+
+TEST(ContainsRegexTest, MatchesStringContainingGivenRegex) {
+  const Matcher<const char*> m1 = ContainsRegex(std::string("a.*z"));
+  EXPECT_TRUE(m1.Matches("az"));
+  EXPECT_TRUE(m1.Matches("0abcz1"));
+  EXPECT_FALSE(m1.Matches(nullptr));
+
+  const Matcher<const std::string&> m2 = ContainsRegex(new RE("a.*z"));
+  EXPECT_TRUE(m2.Matches("azbz"));
+  EXPECT_TRUE(m2.Matches("az1"));
+  EXPECT_FALSE(m2.Matches("1a"));
+
+#if GTEST_HAS_ABSL
+  const Matcher<const absl::string_view&> m3 = ContainsRegex(new RE("a.*z"));
+  EXPECT_TRUE(m3.Matches(absl::string_view("azbz")));
+  EXPECT_TRUE(m3.Matches(absl::string_view("az1")));
+  EXPECT_FALSE(m3.Matches(absl::string_view("1a")));
+  EXPECT_FALSE(m3.Matches(absl::string_view()));
+  const Matcher<const absl::string_view&> m4 = ContainsRegex("");
+  EXPECT_TRUE(m4.Matches(absl::string_view("")));
+  EXPECT_TRUE(m4.Matches(absl::string_view()));
+#endif  // GTEST_HAS_ABSL
+}
+
+TEST(ContainsRegexTest, CanDescribeSelf) {
+  Matcher<const std::string> m1 = ContainsRegex("Hi.*");
+  EXPECT_EQ("contains regular expression \"Hi.*\"", Describe(m1));
+
+  Matcher<const char*> m2 = ContainsRegex(new RE("a.*"));
+  EXPECT_EQ("contains regular expression \"a.*\"", Describe(m2));
+
+#if GTEST_HAS_ABSL
+  Matcher<const absl::string_view> m3 = ContainsRegex(new RE("0.*"));
+  EXPECT_EQ("contains regular expression \"0.*\"", Describe(m3));
+#endif  // GTEST_HAS_ABSL
+}
+
+// Tests for wide strings.
+#if GTEST_HAS_STD_WSTRING
+TEST(StdWideStrEqTest, MatchesEqual) {
+  Matcher<const wchar_t*> m = StrEq(::std::wstring(L"Hello"));
+  EXPECT_TRUE(m.Matches(L"Hello"));
+  EXPECT_FALSE(m.Matches(L"hello"));
+  EXPECT_FALSE(m.Matches(nullptr));
+
+  Matcher<const ::std::wstring&> m2 = StrEq(L"Hello");
+  EXPECT_TRUE(m2.Matches(L"Hello"));
+  EXPECT_FALSE(m2.Matches(L"Hi"));
+
+  Matcher<const ::std::wstring&> m3 = StrEq(L"\xD3\x576\x8D3\xC74D");
+  EXPECT_TRUE(m3.Matches(L"\xD3\x576\x8D3\xC74D"));
+  EXPECT_FALSE(m3.Matches(L"\xD3\x576\x8D3\xC74E"));
+
+  ::std::wstring str(L"01204500800");
+  str[3] = L'\0';
+  Matcher<const ::std::wstring&> m4 = StrEq(str);
+  EXPECT_TRUE(m4.Matches(str));
+  str[0] = str[6] = str[7] = str[9] = str[10] = L'\0';
+  Matcher<const ::std::wstring&> m5 = StrEq(str);
+  EXPECT_TRUE(m5.Matches(str));
+}
+
+TEST(StdWideStrEqTest, CanDescribeSelf) {
+  Matcher< ::std::wstring> m = StrEq(L"Hi-\'\"?\\\a\b\f\n\r\t\v");
+  EXPECT_EQ("is equal to L\"Hi-\'\\\"?\\\\\\a\\b\\f\\n\\r\\t\\v\"",
+    Describe(m));
+
+  Matcher< ::std::wstring> m2 = StrEq(L"\xD3\x576\x8D3\xC74D");
+  EXPECT_EQ("is equal to L\"\\xD3\\x576\\x8D3\\xC74D\"",
+    Describe(m2));
+
+  ::std::wstring str(L"01204500800");
+  str[3] = L'\0';
+  Matcher<const ::std::wstring&> m4 = StrEq(str);
+  EXPECT_EQ("is equal to L\"012\\04500800\"", Describe(m4));
+  str[0] = str[6] = str[7] = str[9] = str[10] = L'\0';
+  Matcher<const ::std::wstring&> m5 = StrEq(str);
+  EXPECT_EQ("is equal to L\"\\012\\045\\0\\08\\0\\0\"", Describe(m5));
+}
+
+TEST(StdWideStrNeTest, MatchesUnequalString) {
+  Matcher<const wchar_t*> m = StrNe(L"Hello");
+  EXPECT_TRUE(m.Matches(L""));
+  EXPECT_TRUE(m.Matches(nullptr));
+  EXPECT_FALSE(m.Matches(L"Hello"));
+
+  Matcher< ::std::wstring> m2 = StrNe(::std::wstring(L"Hello"));
+  EXPECT_TRUE(m2.Matches(L"hello"));
+  EXPECT_FALSE(m2.Matches(L"Hello"));
+}
+
+TEST(StdWideStrNeTest, CanDescribeSelf) {
+  Matcher<const wchar_t*> m = StrNe(L"Hi");
+  EXPECT_EQ("isn't equal to L\"Hi\"", Describe(m));
+}
+
+TEST(StdWideStrCaseEqTest, MatchesEqualStringIgnoringCase) {
+  Matcher<const wchar_t*> m = StrCaseEq(::std::wstring(L"Hello"));
+  EXPECT_TRUE(m.Matches(L"Hello"));
+  EXPECT_TRUE(m.Matches(L"hello"));
+  EXPECT_FALSE(m.Matches(L"Hi"));
+  EXPECT_FALSE(m.Matches(nullptr));
+
+  Matcher<const ::std::wstring&> m2 = StrCaseEq(L"Hello");
+  EXPECT_TRUE(m2.Matches(L"hello"));
+  EXPECT_FALSE(m2.Matches(L"Hi"));
+}
+
+TEST(StdWideStrCaseEqTest, MatchesEqualStringWith0IgnoringCase) {
+  ::std::wstring str1(L"oabocdooeoo");
+  ::std::wstring str2(L"OABOCDOOEOO");
+  Matcher<const ::std::wstring&> m0 = StrCaseEq(str1);
+  EXPECT_FALSE(m0.Matches(str2 + ::std::wstring(1, L'\0')));
+
+  str1[3] = str2[3] = L'\0';
+  Matcher<const ::std::wstring&> m1 = StrCaseEq(str1);
+  EXPECT_TRUE(m1.Matches(str2));
+
+  str1[0] = str1[6] = str1[7] = str1[10] = L'\0';
+  str2[0] = str2[6] = str2[7] = str2[10] = L'\0';
+  Matcher<const ::std::wstring&> m2 = StrCaseEq(str1);
+  str1[9] = str2[9] = L'\0';
+  EXPECT_FALSE(m2.Matches(str2));
+
+  Matcher<const ::std::wstring&> m3 = StrCaseEq(str1);
+  EXPECT_TRUE(m3.Matches(str2));
+
+  EXPECT_FALSE(m3.Matches(str2 + L"x"));
+  str2.append(1, L'\0');
+  EXPECT_FALSE(m3.Matches(str2));
+  EXPECT_FALSE(m3.Matches(::std::wstring(str2, 0, 9)));
+}
+
+TEST(StdWideStrCaseEqTest, CanDescribeSelf) {
+  Matcher< ::std::wstring> m = StrCaseEq(L"Hi");
+  EXPECT_EQ("is equal to (ignoring case) L\"Hi\"", Describe(m));
+}
+
+TEST(StdWideStrCaseNeTest, MatchesUnequalStringIgnoringCase) {
+  Matcher<const wchar_t*> m = StrCaseNe(L"Hello");
+  EXPECT_TRUE(m.Matches(L"Hi"));
+  EXPECT_TRUE(m.Matches(nullptr));
+  EXPECT_FALSE(m.Matches(L"Hello"));
+  EXPECT_FALSE(m.Matches(L"hello"));
+
+  Matcher< ::std::wstring> m2 = StrCaseNe(::std::wstring(L"Hello"));
+  EXPECT_TRUE(m2.Matches(L""));
+  EXPECT_FALSE(m2.Matches(L"Hello"));
+}
+
+TEST(StdWideStrCaseNeTest, CanDescribeSelf) {
+  Matcher<const wchar_t*> m = StrCaseNe(L"Hi");
+  EXPECT_EQ("isn't equal to (ignoring case) L\"Hi\"", Describe(m));
+}
+
+// Tests that HasSubstr() works for matching wstring-typed values.
+TEST(StdWideHasSubstrTest, WorksForStringClasses) {
+  const Matcher< ::std::wstring> m1 = HasSubstr(L"foo");
+  EXPECT_TRUE(m1.Matches(::std::wstring(L"I love food.")));
+  EXPECT_FALSE(m1.Matches(::std::wstring(L"tofo")));
+
+  const Matcher<const ::std::wstring&> m2 = HasSubstr(L"foo");
+  EXPECT_TRUE(m2.Matches(::std::wstring(L"I love food.")));
+  EXPECT_FALSE(m2.Matches(::std::wstring(L"tofo")));
+}
+
+// Tests that HasSubstr() works for matching C-wide-string-typed values.
+TEST(StdWideHasSubstrTest, WorksForCStrings) {
+  const Matcher<wchar_t*> m1 = HasSubstr(L"foo");
+  EXPECT_TRUE(m1.Matches(const_cast<wchar_t*>(L"I love food.")));
+  EXPECT_FALSE(m1.Matches(const_cast<wchar_t*>(L"tofo")));
+  EXPECT_FALSE(m1.Matches(nullptr));
+
+  const Matcher<const wchar_t*> m2 = HasSubstr(L"foo");
+  EXPECT_TRUE(m2.Matches(L"I love food."));
+  EXPECT_FALSE(m2.Matches(L"tofo"));
+  EXPECT_FALSE(m2.Matches(nullptr));
+}
+
+// Tests that HasSubstr(s) describes itself properly.
+TEST(StdWideHasSubstrTest, CanDescribeSelf) {
+  Matcher< ::std::wstring> m = HasSubstr(L"foo\n\"");
+  EXPECT_EQ("has substring L\"foo\\n\\\"\"", Describe(m));
+}
+
+// Tests StartsWith(s).
+
+TEST(StdWideStartsWithTest, MatchesStringWithGivenPrefix) {
+  const Matcher<const wchar_t*> m1 = StartsWith(::std::wstring(L""));
+  EXPECT_TRUE(m1.Matches(L"Hi"));
+  EXPECT_TRUE(m1.Matches(L""));
+  EXPECT_FALSE(m1.Matches(nullptr));
+
+  const Matcher<const ::std::wstring&> m2 = StartsWith(L"Hi");
+  EXPECT_TRUE(m2.Matches(L"Hi"));
+  EXPECT_TRUE(m2.Matches(L"Hi Hi!"));
+  EXPECT_TRUE(m2.Matches(L"High"));
+  EXPECT_FALSE(m2.Matches(L"H"));
+  EXPECT_FALSE(m2.Matches(L" Hi"));
+}
+
+TEST(StdWideStartsWithTest, CanDescribeSelf) {
+  Matcher<const ::std::wstring> m = StartsWith(L"Hi");
+  EXPECT_EQ("starts with L\"Hi\"", Describe(m));
+}
+
+// Tests EndsWith(s).
+
+TEST(StdWideEndsWithTest, MatchesStringWithGivenSuffix) {
+  const Matcher<const wchar_t*> m1 = EndsWith(L"");
+  EXPECT_TRUE(m1.Matches(L"Hi"));
+  EXPECT_TRUE(m1.Matches(L""));
+  EXPECT_FALSE(m1.Matches(nullptr));
+
+  const Matcher<const ::std::wstring&> m2 = EndsWith(::std::wstring(L"Hi"));
+  EXPECT_TRUE(m2.Matches(L"Hi"));
+  EXPECT_TRUE(m2.Matches(L"Wow Hi Hi"));
+  EXPECT_TRUE(m2.Matches(L"Super Hi"));
+  EXPECT_FALSE(m2.Matches(L"i"));
+  EXPECT_FALSE(m2.Matches(L"Hi "));
+}
+
+TEST(StdWideEndsWithTest, CanDescribeSelf) {
+  Matcher<const ::std::wstring> m = EndsWith(L"Hi");
+  EXPECT_EQ("ends with L\"Hi\"", Describe(m));
+}
+
+#endif  // GTEST_HAS_STD_WSTRING
+
+typedef ::std::tuple<long, int> Tuple2;  // NOLINT
+
+// Tests that Eq() matches a 2-tuple where the first field == the
+// second field.
+TEST(Eq2Test, MatchesEqualArguments) {
+  Matcher<const Tuple2&> m = Eq();
+  EXPECT_TRUE(m.Matches(Tuple2(5L, 5)));
+  EXPECT_FALSE(m.Matches(Tuple2(5L, 6)));
+}
+
+// Tests that Eq() describes itself properly.
+TEST(Eq2Test, CanDescribeSelf) {
+  Matcher<const Tuple2&> m = Eq();
+  EXPECT_EQ("are an equal pair", Describe(m));
+}
+
+// Tests that Ge() matches a 2-tuple where the first field >= the
+// second field.
+TEST(Ge2Test, MatchesGreaterThanOrEqualArguments) {
+  Matcher<const Tuple2&> m = Ge();
+  EXPECT_TRUE(m.Matches(Tuple2(5L, 4)));
+  EXPECT_TRUE(m.Matches(Tuple2(5L, 5)));
+  EXPECT_FALSE(m.Matches(Tuple2(5L, 6)));
+}
+
+// Tests that Ge() describes itself properly.
+TEST(Ge2Test, CanDescribeSelf) {
+  Matcher<const Tuple2&> m = Ge();
+  EXPECT_EQ("are a pair where the first >= the second", Describe(m));
+}
+
+// Tests that Gt() matches a 2-tuple where the first field > the
+// second field.
+TEST(Gt2Test, MatchesGreaterThanArguments) {
+  Matcher<const Tuple2&> m = Gt();
+  EXPECT_TRUE(m.Matches(Tuple2(5L, 4)));
+  EXPECT_FALSE(m.Matches(Tuple2(5L, 5)));
+  EXPECT_FALSE(m.Matches(Tuple2(5L, 6)));
+}
+
+// Tests that Gt() describes itself properly.
+TEST(Gt2Test, CanDescribeSelf) {
+  Matcher<const Tuple2&> m = Gt();
+  EXPECT_EQ("are a pair where the first > the second", Describe(m));
+}
+
+// Tests that Le() matches a 2-tuple where the first field <= the
+// second field.
+TEST(Le2Test, MatchesLessThanOrEqualArguments) {
+  Matcher<const Tuple2&> m = Le();
+  EXPECT_TRUE(m.Matches(Tuple2(5L, 6)));
+  EXPECT_TRUE(m.Matches(Tuple2(5L, 5)));
+  EXPECT_FALSE(m.Matches(Tuple2(5L, 4)));
+}
+
+// Tests that Le() describes itself properly.
+TEST(Le2Test, CanDescribeSelf) {
+  Matcher<const Tuple2&> m = Le();
+  EXPECT_EQ("are a pair where the first <= the second", Describe(m));
+}
+
+// Tests that Lt() matches a 2-tuple where the first field < the
+// second field.
+TEST(Lt2Test, MatchesLessThanArguments) {
+  Matcher<const Tuple2&> m = Lt();
+  EXPECT_TRUE(m.Matches(Tuple2(5L, 6)));
+  EXPECT_FALSE(m.Matches(Tuple2(5L, 5)));
+  EXPECT_FALSE(m.Matches(Tuple2(5L, 4)));
+}
+
+// Tests that Lt() describes itself properly.
+TEST(Lt2Test, CanDescribeSelf) {
+  Matcher<const Tuple2&> m = Lt();
+  EXPECT_EQ("are a pair where the first < the second", Describe(m));
+}
+
+// Tests that Ne() matches a 2-tuple where the first field != the
+// second field.
+TEST(Ne2Test, MatchesUnequalArguments) {
+  Matcher<const Tuple2&> m = Ne();
+  EXPECT_TRUE(m.Matches(Tuple2(5L, 6)));
+  EXPECT_TRUE(m.Matches(Tuple2(5L, 4)));
+  EXPECT_FALSE(m.Matches(Tuple2(5L, 5)));
+}
+
+// Tests that Ne() describes itself properly.
+TEST(Ne2Test, CanDescribeSelf) {
+  Matcher<const Tuple2&> m = Ne();
+  EXPECT_EQ("are an unequal pair", Describe(m));
+}
+
+TEST(PairMatchBaseTest, WorksWithMoveOnly) {
+  using Pointers = std::tuple<std::unique_ptr<int>, std::unique_ptr<int>>;
+  Matcher<Pointers> matcher = Eq();
+  Pointers pointers;
+  // Tested values don't matter; the point is that matcher does not copy the
+  // matched values.
+  EXPECT_TRUE(matcher.Matches(pointers));
+}
+
+// Tests that FloatEq() matches a 2-tuple where
+// FloatEq(first field) matches the second field.
+TEST(FloatEq2Test, MatchesEqualArguments) {
+  typedef ::std::tuple<float, float> Tpl;
+  Matcher<const Tpl&> m = FloatEq();
+  EXPECT_TRUE(m.Matches(Tpl(1.0f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(0.3f, 0.1f + 0.1f + 0.1f)));
+  EXPECT_FALSE(m.Matches(Tpl(1.1f, 1.0f)));
+}
+
+// Tests that FloatEq() describes itself properly.
+TEST(FloatEq2Test, CanDescribeSelf) {
+  Matcher<const ::std::tuple<float, float>&> m = FloatEq();
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that NanSensitiveFloatEq() matches a 2-tuple where
+// NanSensitiveFloatEq(first field) matches the second field.
+TEST(NanSensitiveFloatEqTest, MatchesEqualArgumentsWithNaN) {
+  typedef ::std::tuple<float, float> Tpl;
+  Matcher<const Tpl&> m = NanSensitiveFloatEq();
+  EXPECT_TRUE(m.Matches(Tpl(1.0f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(std::numeric_limits<float>::quiet_NaN(),
+                            std::numeric_limits<float>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(1.1f, 1.0f)));
+  EXPECT_FALSE(m.Matches(Tpl(1.0f, std::numeric_limits<float>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(std::numeric_limits<float>::quiet_NaN(), 1.0f)));
+}
+
+// Tests that NanSensitiveFloatEq() describes itself properly.
+TEST(NanSensitiveFloatEqTest, CanDescribeSelfWithNaNs) {
+  Matcher<const ::std::tuple<float, float>&> m = NanSensitiveFloatEq();
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that DoubleEq() matches a 2-tuple where
+// DoubleEq(first field) matches the second field.
+TEST(DoubleEq2Test, MatchesEqualArguments) {
+  typedef ::std::tuple<double, double> Tpl;
+  Matcher<const Tpl&> m = DoubleEq();
+  EXPECT_TRUE(m.Matches(Tpl(1.0, 1.0)));
+  EXPECT_TRUE(m.Matches(Tpl(0.3, 0.1 + 0.1 + 0.1)));
+  EXPECT_FALSE(m.Matches(Tpl(1.1, 1.0)));
+}
+
+// Tests that DoubleEq() describes itself properly.
+TEST(DoubleEq2Test, CanDescribeSelf) {
+  Matcher<const ::std::tuple<double, double>&> m = DoubleEq();
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that NanSensitiveDoubleEq() matches a 2-tuple where
+// NanSensitiveDoubleEq(first field) matches the second field.
+TEST(NanSensitiveDoubleEqTest, MatchesEqualArgumentsWithNaN) {
+  typedef ::std::tuple<double, double> Tpl;
+  Matcher<const Tpl&> m = NanSensitiveDoubleEq();
+  EXPECT_TRUE(m.Matches(Tpl(1.0f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(std::numeric_limits<double>::quiet_NaN(),
+                            std::numeric_limits<double>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(1.1f, 1.0f)));
+  EXPECT_FALSE(m.Matches(Tpl(1.0f, std::numeric_limits<double>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(std::numeric_limits<double>::quiet_NaN(), 1.0f)));
+}
+
+// Tests that DoubleEq() describes itself properly.
+TEST(NanSensitiveDoubleEqTest, CanDescribeSelfWithNaNs) {
+  Matcher<const ::std::tuple<double, double>&> m = NanSensitiveDoubleEq();
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that FloatEq() matches a 2-tuple where
+// FloatNear(first field, max_abs_error) matches the second field.
+TEST(FloatNear2Test, MatchesEqualArguments) {
+  typedef ::std::tuple<float, float> Tpl;
+  Matcher<const Tpl&> m = FloatNear(0.5f);
+  EXPECT_TRUE(m.Matches(Tpl(1.0f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(1.3f, 1.0f)));
+  EXPECT_FALSE(m.Matches(Tpl(1.8f, 1.0f)));
+}
+
+// Tests that FloatNear() describes itself properly.
+TEST(FloatNear2Test, CanDescribeSelf) {
+  Matcher<const ::std::tuple<float, float>&> m = FloatNear(0.5f);
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that NanSensitiveFloatNear() matches a 2-tuple where
+// NanSensitiveFloatNear(first field) matches the second field.
+TEST(NanSensitiveFloatNearTest, MatchesNearbyArgumentsWithNaN) {
+  typedef ::std::tuple<float, float> Tpl;
+  Matcher<const Tpl&> m = NanSensitiveFloatNear(0.5f);
+  EXPECT_TRUE(m.Matches(Tpl(1.0f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(1.1f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(std::numeric_limits<float>::quiet_NaN(),
+                            std::numeric_limits<float>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(1.6f, 1.0f)));
+  EXPECT_FALSE(m.Matches(Tpl(1.0f, std::numeric_limits<float>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(std::numeric_limits<float>::quiet_NaN(), 1.0f)));
+}
+
+// Tests that NanSensitiveFloatNear() describes itself properly.
+TEST(NanSensitiveFloatNearTest, CanDescribeSelfWithNaNs) {
+  Matcher<const ::std::tuple<float, float>&> m = NanSensitiveFloatNear(0.5f);
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that FloatEq() matches a 2-tuple where
+// DoubleNear(first field, max_abs_error) matches the second field.
+TEST(DoubleNear2Test, MatchesEqualArguments) {
+  typedef ::std::tuple<double, double> Tpl;
+  Matcher<const Tpl&> m = DoubleNear(0.5);
+  EXPECT_TRUE(m.Matches(Tpl(1.0, 1.0)));
+  EXPECT_TRUE(m.Matches(Tpl(1.3, 1.0)));
+  EXPECT_FALSE(m.Matches(Tpl(1.8, 1.0)));
+}
+
+// Tests that DoubleNear() describes itself properly.
+TEST(DoubleNear2Test, CanDescribeSelf) {
+  Matcher<const ::std::tuple<double, double>&> m = DoubleNear(0.5);
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that NanSensitiveDoubleNear() matches a 2-tuple where
+// NanSensitiveDoubleNear(first field) matches the second field.
+TEST(NanSensitiveDoubleNearTest, MatchesNearbyArgumentsWithNaN) {
+  typedef ::std::tuple<double, double> Tpl;
+  Matcher<const Tpl&> m = NanSensitiveDoubleNear(0.5f);
+  EXPECT_TRUE(m.Matches(Tpl(1.0f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(1.1f, 1.0f)));
+  EXPECT_TRUE(m.Matches(Tpl(std::numeric_limits<double>::quiet_NaN(),
+                            std::numeric_limits<double>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(1.6f, 1.0f)));
+  EXPECT_FALSE(m.Matches(Tpl(1.0f, std::numeric_limits<double>::quiet_NaN())));
+  EXPECT_FALSE(m.Matches(Tpl(std::numeric_limits<double>::quiet_NaN(), 1.0f)));
+}
+
+// Tests that NanSensitiveDoubleNear() describes itself properly.
+TEST(NanSensitiveDoubleNearTest, CanDescribeSelfWithNaNs) {
+  Matcher<const ::std::tuple<double, double>&> m = NanSensitiveDoubleNear(0.5f);
+  EXPECT_EQ("are an almost-equal pair", Describe(m));
+}
+
+// Tests that Not(m) matches any value that doesn't match m.
+TEST(NotTest, NegatesMatcher) {
+  Matcher<int> m;
+  m = Not(Eq(2));
+  EXPECT_TRUE(m.Matches(3));
+  EXPECT_FALSE(m.Matches(2));
+}
+
+// Tests that Not(m) describes itself properly.
+TEST(NotTest, CanDescribeSelf) {
+  Matcher<int> m = Not(Eq(5));
+  EXPECT_EQ("isn't equal to 5", Describe(m));
+}
+
+// Tests that monomorphic matchers are safely cast by the Not matcher.
+TEST(NotTest, NotMatcherSafelyCastsMonomorphicMatchers) {
+  // greater_than_5 is a monomorphic matcher.
+  Matcher<int> greater_than_5 = Gt(5);
+
+  Matcher<const int&> m = Not(greater_than_5);
+  Matcher<int&> m2 = Not(greater_than_5);
+  Matcher<int&> m3 = Not(m);
+}
+
+// Helper to allow easy testing of AllOf matchers with num parameters.
+void AllOfMatches(int num, const Matcher<int>& m) {
+  SCOPED_TRACE(Describe(m));
+  EXPECT_TRUE(m.Matches(0));
+  for (int i = 1; i <= num; ++i) {
+    EXPECT_FALSE(m.Matches(i));
+  }
+  EXPECT_TRUE(m.Matches(num + 1));
+}
+
+// Tests that AllOf(m1, ..., mn) matches any value that matches all of
+// the given matchers.
+TEST(AllOfTest, MatchesWhenAllMatch) {
+  Matcher<int> m;
+  m = AllOf(Le(2), Ge(1));
+  EXPECT_TRUE(m.Matches(1));
+  EXPECT_TRUE(m.Matches(2));
+  EXPECT_FALSE(m.Matches(0));
+  EXPECT_FALSE(m.Matches(3));
+
+  m = AllOf(Gt(0), Ne(1), Ne(2));
+  EXPECT_TRUE(m.Matches(3));
+  EXPECT_FALSE(m.Matches(2));
+  EXPECT_FALSE(m.Matches(1));
+  EXPECT_FALSE(m.Matches(0));
+
+  m = AllOf(Gt(0), Ne(1), Ne(2), Ne(3));
+  EXPECT_TRUE(m.Matches(4));
+  EXPECT_FALSE(m.Matches(3));
+  EXPECT_FALSE(m.Matches(2));
+  EXPECT_FALSE(m.Matches(1));
+  EXPECT_FALSE(m.Matches(0));
+
+  m = AllOf(Ge(0), Lt(10), Ne(3), Ne(5), Ne(7));
+  EXPECT_TRUE(m.Matches(0));
+  EXPECT_TRUE(m.Matches(1));
+  EXPECT_FALSE(m.Matches(3));
+
+  // The following tests for varying number of sub-matchers. Due to the way
+  // the sub-matchers are handled it is enough to test every sub-matcher once
+  // with sub-matchers using the same matcher type. Varying matcher types are
+  // checked for above.
+  AllOfMatches(2, AllOf(Ne(1), Ne(2)));
+  AllOfMatches(3, AllOf(Ne(1), Ne(2), Ne(3)));
+  AllOfMatches(4, AllOf(Ne(1), Ne(2), Ne(3), Ne(4)));
+  AllOfMatches(5, AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5)));
+  AllOfMatches(6, AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6)));
+  AllOfMatches(7, AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6), Ne(7)));
+  AllOfMatches(8, AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6), Ne(7),
+                        Ne(8)));
+  AllOfMatches(9, AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6), Ne(7),
+                        Ne(8), Ne(9)));
+  AllOfMatches(10, AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6), Ne(7), Ne(8),
+                         Ne(9), Ne(10)));
+  AllOfMatches(
+      50, AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6), Ne(7), Ne(8), Ne(9),
+                Ne(10), Ne(11), Ne(12), Ne(13), Ne(14), Ne(15), Ne(16), Ne(17),
+                Ne(18), Ne(19), Ne(20), Ne(21), Ne(22), Ne(23), Ne(24), Ne(25),
+                Ne(26), Ne(27), Ne(28), Ne(29), Ne(30), Ne(31), Ne(32), Ne(33),
+                Ne(34), Ne(35), Ne(36), Ne(37), Ne(38), Ne(39), Ne(40), Ne(41),
+                Ne(42), Ne(43), Ne(44), Ne(45), Ne(46), Ne(47), Ne(48), Ne(49),
+                Ne(50)));
+}
+
+
+// Tests that AllOf(m1, ..., mn) describes itself properly.
+TEST(AllOfTest, CanDescribeSelf) {
+  Matcher<int> m;
+  m = AllOf(Le(2), Ge(1));
+  EXPECT_EQ("(is <= 2) and (is >= 1)", Describe(m));
+
+  m = AllOf(Gt(0), Ne(1), Ne(2));
+  std::string expected_descr1 =
+      "(is > 0) and (isn't equal to 1) and (isn't equal to 2)";
+  EXPECT_EQ(expected_descr1, Describe(m));
+
+  m = AllOf(Gt(0), Ne(1), Ne(2), Ne(3));
+  std::string expected_descr2 =
+      "(is > 0) and (isn't equal to 1) and (isn't equal to 2) and (isn't equal "
+      "to 3)";
+  EXPECT_EQ(expected_descr2, Describe(m));
+
+  m = AllOf(Ge(0), Lt(10), Ne(3), Ne(5), Ne(7));
+  std::string expected_descr3 =
+      "(is >= 0) and (is < 10) and (isn't equal to 3) and (isn't equal to 5) "
+      "and (isn't equal to 7)";
+  EXPECT_EQ(expected_descr3, Describe(m));
+}
+
+// Tests that AllOf(m1, ..., mn) describes its negation properly.
+TEST(AllOfTest, CanDescribeNegation) {
+  Matcher<int> m;
+  m = AllOf(Le(2), Ge(1));
+  std::string expected_descr4 = "(isn't <= 2) or (isn't >= 1)";
+  EXPECT_EQ(expected_descr4, DescribeNegation(m));
+
+  m = AllOf(Gt(0), Ne(1), Ne(2));
+  std::string expected_descr5 =
+      "(isn't > 0) or (is equal to 1) or (is equal to 2)";
+  EXPECT_EQ(expected_descr5, DescribeNegation(m));
+
+  m = AllOf(Gt(0), Ne(1), Ne(2), Ne(3));
+  std::string expected_descr6 =
+      "(isn't > 0) or (is equal to 1) or (is equal to 2) or (is equal to 3)";
+  EXPECT_EQ(expected_descr6, DescribeNegation(m));
+
+  m = AllOf(Ge(0), Lt(10), Ne(3), Ne(5), Ne(7));
+  std::string expected_desr7 =
+      "(isn't >= 0) or (isn't < 10) or (is equal to 3) or (is equal to 5) or "
+      "(is equal to 7)";
+  EXPECT_EQ(expected_desr7, DescribeNegation(m));
+
+  m = AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6), Ne(7), Ne(8), Ne(9),
+            Ne(10), Ne(11));
+  AllOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11);
+  EXPECT_THAT(Describe(m), EndsWith("and (isn't equal to 11)"));
+  AllOfMatches(11, m);
+}
+
+// Tests that monomorphic matchers are safely cast by the AllOf matcher.
+TEST(AllOfTest, AllOfMatcherSafelyCastsMonomorphicMatchers) {
+  // greater_than_5 and less_than_10 are monomorphic matchers.
+  Matcher<int> greater_than_5 = Gt(5);
+  Matcher<int> less_than_10 = Lt(10);
+
+  Matcher<const int&> m = AllOf(greater_than_5, less_than_10);
+  Matcher<int&> m2 = AllOf(greater_than_5, less_than_10);
+  Matcher<int&> m3 = AllOf(greater_than_5, m2);
+
+  // Tests that BothOf works when composing itself.
+  Matcher<const int&> m4 = AllOf(greater_than_5, less_than_10, less_than_10);
+  Matcher<int&> m5 = AllOf(greater_than_5, less_than_10, less_than_10);
+}
+
+TEST(AllOfTest, ExplainsResult) {
+  Matcher<int> m;
+
+  // Successful match.  Both matchers need to explain.  The second
+  // matcher doesn't give an explanation, so only the first matcher's
+  // explanation is printed.
+  m = AllOf(GreaterThan(10), Lt(30));
+  EXPECT_EQ("which is 15 more than 10", Explain(m, 25));
+
+  // Successful match.  Both matchers need to explain.
+  m = AllOf(GreaterThan(10), GreaterThan(20));
+  EXPECT_EQ("which is 20 more than 10, and which is 10 more than 20",
+            Explain(m, 30));
+
+  // Successful match.  All matchers need to explain.  The second
+  // matcher doesn't given an explanation.
+  m = AllOf(GreaterThan(10), Lt(30), GreaterThan(20));
+  EXPECT_EQ("which is 15 more than 10, and which is 5 more than 20",
+            Explain(m, 25));
+
+  // Successful match.  All matchers need to explain.
+  m = AllOf(GreaterThan(10), GreaterThan(20), GreaterThan(30));
+  EXPECT_EQ("which is 30 more than 10, and which is 20 more than 20, "
+            "and which is 10 more than 30",
+            Explain(m, 40));
+
+  // Failed match.  The first matcher, which failed, needs to
+  // explain.
+  m = AllOf(GreaterThan(10), GreaterThan(20));
+  EXPECT_EQ("which is 5 less than 10", Explain(m, 5));
+
+  // Failed match.  The second matcher, which failed, needs to
+  // explain.  Since it doesn't given an explanation, nothing is
+  // printed.
+  m = AllOf(GreaterThan(10), Lt(30));
+  EXPECT_EQ("", Explain(m, 40));
+
+  // Failed match.  The second matcher, which failed, needs to
+  // explain.
+  m = AllOf(GreaterThan(10), GreaterThan(20));
+  EXPECT_EQ("which is 5 less than 20", Explain(m, 15));
+}
+
+// Helper to allow easy testing of AnyOf matchers with num parameters.
+static void AnyOfMatches(int num, const Matcher<int>& m) {
+  SCOPED_TRACE(Describe(m));
+  EXPECT_FALSE(m.Matches(0));
+  for (int i = 1; i <= num; ++i) {
+    EXPECT_TRUE(m.Matches(i));
+  }
+  EXPECT_FALSE(m.Matches(num + 1));
+}
+
+static void AnyOfStringMatches(int num, const Matcher<std::string>& m) {
+  SCOPED_TRACE(Describe(m));
+  EXPECT_FALSE(m.Matches(std::to_string(0)));
+
+  for (int i = 1; i <= num; ++i) {
+    EXPECT_TRUE(m.Matches(std::to_string(i)));
+  }
+  EXPECT_FALSE(m.Matches(std::to_string(num + 1)));
+}
+
+// Tests that AnyOf(m1, ..., mn) matches any value that matches at
+// least one of the given matchers.
+TEST(AnyOfTest, MatchesWhenAnyMatches) {
+  Matcher<int> m;
+  m = AnyOf(Le(1), Ge(3));
+  EXPECT_TRUE(m.Matches(1));
+  EXPECT_TRUE(m.Matches(4));
+  EXPECT_FALSE(m.Matches(2));
+
+  m = AnyOf(Lt(0), Eq(1), Eq(2));
+  EXPECT_TRUE(m.Matches(-1));
+  EXPECT_TRUE(m.Matches(1));
+  EXPECT_TRUE(m.Matches(2));
+  EXPECT_FALSE(m.Matches(0));
+
+  m = AnyOf(Lt(0), Eq(1), Eq(2), Eq(3));
+  EXPECT_TRUE(m.Matches(-1));
+  EXPECT_TRUE(m.Matches(1));
+  EXPECT_TRUE(m.Matches(2));
+  EXPECT_TRUE(m.Matches(3));
+  EXPECT_FALSE(m.Matches(0));
+
+  m = AnyOf(Le(0), Gt(10), 3, 5, 7);
+  EXPECT_TRUE(m.Matches(0));
+  EXPECT_TRUE(m.Matches(11));
+  EXPECT_TRUE(m.Matches(3));
+  EXPECT_FALSE(m.Matches(2));
+
+  // The following tests for varying number of sub-matchers. Due to the way
+  // the sub-matchers are handled it is enough to test every sub-matcher once
+  // with sub-matchers using the same matcher type. Varying matcher types are
+  // checked for above.
+  AnyOfMatches(2, AnyOf(1, 2));
+  AnyOfMatches(3, AnyOf(1, 2, 3));
+  AnyOfMatches(4, AnyOf(1, 2, 3, 4));
+  AnyOfMatches(5, AnyOf(1, 2, 3, 4, 5));
+  AnyOfMatches(6, AnyOf(1, 2, 3, 4, 5, 6));
+  AnyOfMatches(7, AnyOf(1, 2, 3, 4, 5, 6, 7));
+  AnyOfMatches(8, AnyOf(1, 2, 3, 4, 5, 6, 7, 8));
+  AnyOfMatches(9, AnyOf(1, 2, 3, 4, 5, 6, 7, 8, 9));
+  AnyOfMatches(10, AnyOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10));
+}
+
+// Tests the variadic version of the AnyOfMatcher.
+TEST(AnyOfTest, VariadicMatchesWhenAnyMatches) {
+  // Also make sure AnyOf is defined in the right namespace and does not depend
+  // on ADL.
+  Matcher<int> m = ::testing::AnyOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11);
+
+  EXPECT_THAT(Describe(m), EndsWith("or (is equal to 11)"));
+  AnyOfMatches(11, m);
+  AnyOfMatches(50, AnyOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
+                         11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
+                         21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
+                         31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
+                         41, 42, 43, 44, 45, 46, 47, 48, 49, 50));
+  AnyOfStringMatches(
+      50, AnyOf("1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",
+                "13", "14", "15", "16", "17", "18", "19", "20", "21", "22",
+                "23", "24", "25", "26", "27", "28", "29", "30", "31", "32",
+                "33", "34", "35", "36", "37", "38", "39", "40", "41", "42",
+                "43", "44", "45", "46", "47", "48", "49", "50"));
+}
+
+// Tests the variadic version of the ElementsAreMatcher
+TEST(ElementsAreTest, HugeMatcher) {
+  vector<int> test_vector{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12};
+
+  EXPECT_THAT(test_vector,
+              ElementsAre(Eq(1), Eq(2), Lt(13), Eq(4), Eq(5), Eq(6), Eq(7),
+                          Eq(8), Eq(9), Eq(10), Gt(1), Eq(12)));
+}
+
+// Tests the variadic version of the UnorderedElementsAreMatcher
+TEST(ElementsAreTest, HugeMatcherStr) {
+  vector<std::string> test_vector{
+      "literal_string", "", "", "", "", "", "", "", "", "", "", ""};
+
+  EXPECT_THAT(test_vector, UnorderedElementsAre("literal_string", _, _, _, _, _,
+                                                _, _, _, _, _, _));
+}
+
+// Tests the variadic version of the UnorderedElementsAreMatcher
+TEST(ElementsAreTest, HugeMatcherUnordered) {
+  vector<int> test_vector{2, 1, 8, 5, 4, 6, 7, 3, 9, 12, 11, 10};
+
+  EXPECT_THAT(test_vector, UnorderedElementsAre(
+                               Eq(2), Eq(1), Gt(7), Eq(5), Eq(4), Eq(6), Eq(7),
+                               Eq(3), Eq(9), Eq(12), Eq(11), Ne(122)));
+}
+
+
+// Tests that AnyOf(m1, ..., mn) describes itself properly.
+TEST(AnyOfTest, CanDescribeSelf) {
+  Matcher<int> m;
+  m = AnyOf(Le(1), Ge(3));
+
+  EXPECT_EQ("(is <= 1) or (is >= 3)",
+            Describe(m));
+
+  m = AnyOf(Lt(0), Eq(1), Eq(2));
+  EXPECT_EQ("(is < 0) or (is equal to 1) or (is equal to 2)", Describe(m));
+
+  m = AnyOf(Lt(0), Eq(1), Eq(2), Eq(3));
+  EXPECT_EQ("(is < 0) or (is equal to 1) or (is equal to 2) or (is equal to 3)",
+            Describe(m));
+
+  m = AnyOf(Le(0), Gt(10), 3, 5, 7);
+  EXPECT_EQ(
+      "(is <= 0) or (is > 10) or (is equal to 3) or (is equal to 5) or (is "
+      "equal to 7)",
+      Describe(m));
+}
+
+// Tests that AnyOf(m1, ..., mn) describes its negation properly.
+TEST(AnyOfTest, CanDescribeNegation) {
+  Matcher<int> m;
+  m = AnyOf(Le(1), Ge(3));
+  EXPECT_EQ("(isn't <= 1) and (isn't >= 3)",
+            DescribeNegation(m));
+
+  m = AnyOf(Lt(0), Eq(1), Eq(2));
+  EXPECT_EQ("(isn't < 0) and (isn't equal to 1) and (isn't equal to 2)",
+            DescribeNegation(m));
+
+  m = AnyOf(Lt(0), Eq(1), Eq(2), Eq(3));
+  EXPECT_EQ(
+      "(isn't < 0) and (isn't equal to 1) and (isn't equal to 2) and (isn't "
+      "equal to 3)",
+      DescribeNegation(m));
+
+  m = AnyOf(Le(0), Gt(10), 3, 5, 7);
+  EXPECT_EQ(
+      "(isn't <= 0) and (isn't > 10) and (isn't equal to 3) and (isn't equal "
+      "to 5) and (isn't equal to 7)",
+      DescribeNegation(m));
+}
+
+// Tests that monomorphic matchers are safely cast by the AnyOf matcher.
+TEST(AnyOfTest, AnyOfMatcherSafelyCastsMonomorphicMatchers) {
+  // greater_than_5 and less_than_10 are monomorphic matchers.
+  Matcher<int> greater_than_5 = Gt(5);
+  Matcher<int> less_than_10 = Lt(10);
+
+  Matcher<const int&> m = AnyOf(greater_than_5, less_than_10);
+  Matcher<int&> m2 = AnyOf(greater_than_5, less_than_10);
+  Matcher<int&> m3 = AnyOf(greater_than_5, m2);
+
+  // Tests that EitherOf works when composing itself.
+  Matcher<const int&> m4 = AnyOf(greater_than_5, less_than_10, less_than_10);
+  Matcher<int&> m5 = AnyOf(greater_than_5, less_than_10, less_than_10);
+}
+
+TEST(AnyOfTest, ExplainsResult) {
+  Matcher<int> m;
+
+  // Failed match.  Both matchers need to explain.  The second
+  // matcher doesn't give an explanation, so only the first matcher's
+  // explanation is printed.
+  m = AnyOf(GreaterThan(10), Lt(0));
+  EXPECT_EQ("which is 5 less than 10", Explain(m, 5));
+
+  // Failed match.  Both matchers need to explain.
+  m = AnyOf(GreaterThan(10), GreaterThan(20));
+  EXPECT_EQ("which is 5 less than 10, and which is 15 less than 20",
+            Explain(m, 5));
+
+  // Failed match.  All matchers need to explain.  The second
+  // matcher doesn't given an explanation.
+  m = AnyOf(GreaterThan(10), Gt(20), GreaterThan(30));
+  EXPECT_EQ("which is 5 less than 10, and which is 25 less than 30",
+            Explain(m, 5));
+
+  // Failed match.  All matchers need to explain.
+  m = AnyOf(GreaterThan(10), GreaterThan(20), GreaterThan(30));
+  EXPECT_EQ("which is 5 less than 10, and which is 15 less than 20, "
+            "and which is 25 less than 30",
+            Explain(m, 5));
+
+  // Successful match.  The first matcher, which succeeded, needs to
+  // explain.
+  m = AnyOf(GreaterThan(10), GreaterThan(20));
+  EXPECT_EQ("which is 5 more than 10", Explain(m, 15));
+
+  // Successful match.  The second matcher, which succeeded, needs to
+  // explain.  Since it doesn't given an explanation, nothing is
+  // printed.
+  m = AnyOf(GreaterThan(10), Lt(30));
+  EXPECT_EQ("", Explain(m, 0));
+
+  // Successful match.  The second matcher, which succeeded, needs to
+  // explain.
+  m = AnyOf(GreaterThan(30), GreaterThan(20));
+  EXPECT_EQ("which is 5 more than 20", Explain(m, 25));
+}
+
+// The following predicate function and predicate functor are for
+// testing the Truly(predicate) matcher.
+
+// Returns non-zero if the input is positive.  Note that the return
+// type of this function is not bool.  It's OK as Truly() accepts any
+// unary function or functor whose return type can be implicitly
+// converted to bool.
+int IsPositive(double x) {
+  return x > 0 ? 1 : 0;
+}
+
+// This functor returns true if the input is greater than the given
+// number.
+class IsGreaterThan {
+ public:
+  explicit IsGreaterThan(int threshold) : threshold_(threshold) {}
+
+  bool operator()(int n) const { return n > threshold_; }
+
+ private:
+  int threshold_;
+};
+
+// For testing Truly().
+const int foo = 0;
+
+// This predicate returns true if and only if the argument references foo and
+// has a zero value.
+bool ReferencesFooAndIsZero(const int& n) {
+  return (&n == &foo) && (n == 0);
+}
+
+// Tests that Truly(predicate) matches what satisfies the given
+// predicate.
+TEST(TrulyTest, MatchesWhatSatisfiesThePredicate) {
+  Matcher<double> m = Truly(IsPositive);
+  EXPECT_TRUE(m.Matches(2.0));
+  EXPECT_FALSE(m.Matches(-1.5));
+}
+
+// Tests that Truly(predicate_functor) works too.
+TEST(TrulyTest, CanBeUsedWithFunctor) {
+  Matcher<int> m = Truly(IsGreaterThan(5));
+  EXPECT_TRUE(m.Matches(6));
+  EXPECT_FALSE(m.Matches(4));
+}
+
+// A class that can be implicitly converted to bool.
+class ConvertibleToBool {
+ public:
+  explicit ConvertibleToBool(int number) : number_(number) {}
+  operator bool() const { return number_ != 0; }
+
+ private:
+  int number_;
+};
+
+ConvertibleToBool IsNotZero(int number) {
+  return ConvertibleToBool(number);
+}
+
+// Tests that the predicate used in Truly() may return a class that's
+// implicitly convertible to bool, even when the class has no
+// operator!().
+TEST(TrulyTest, PredicateCanReturnAClassConvertibleToBool) {
+  Matcher<int> m = Truly(IsNotZero);
+  EXPECT_TRUE(m.Matches(1));
+  EXPECT_FALSE(m.Matches(0));
+}
+
+// Tests that Truly(predicate) can describe itself properly.
+TEST(TrulyTest, CanDescribeSelf) {
+  Matcher<double> m = Truly(IsPositive);
+  EXPECT_EQ("satisfies the given predicate",
+            Describe(m));
+}
+
+// Tests that Truly(predicate) works when the matcher takes its
+// argument by reference.
+TEST(TrulyTest, WorksForByRefArguments) {
+  Matcher<const int&> m = Truly(ReferencesFooAndIsZero);
+  EXPECT_TRUE(m.Matches(foo));
+  int n = 0;
+  EXPECT_FALSE(m.Matches(n));
+}
+
+// Tests that Matches(m) is a predicate satisfied by whatever that
+// matches matcher m.
+TEST(MatchesTest, IsSatisfiedByWhatMatchesTheMatcher) {
+  EXPECT_TRUE(Matches(Ge(0))(1));
+  EXPECT_FALSE(Matches(Eq('a'))('b'));
+}
+
+// Tests that Matches(m) works when the matcher takes its argument by
+// reference.
+TEST(MatchesTest, WorksOnByRefArguments) {
+  int m = 0, n = 0;
+  EXPECT_TRUE(Matches(AllOf(Ref(n), Eq(0)))(n));
+  EXPECT_FALSE(Matches(Ref(m))(n));
+}
+
+// Tests that a Matcher on non-reference type can be used in
+// Matches().
+TEST(MatchesTest, WorksWithMatcherOnNonRefType) {
+  Matcher<int> eq5 = Eq(5);
+  EXPECT_TRUE(Matches(eq5)(5));
+  EXPECT_FALSE(Matches(eq5)(2));
+}
+
+// Tests Value(value, matcher).  Since Value() is a simple wrapper for
+// Matches(), which has been tested already, we don't spend a lot of
+// effort on testing Value().
+TEST(ValueTest, WorksWithPolymorphicMatcher) {
+  EXPECT_TRUE(Value("hi", StartsWith("h")));
+  EXPECT_FALSE(Value(5, Gt(10)));
+}
+
+TEST(ValueTest, WorksWithMonomorphicMatcher) {
+  const Matcher<int> is_zero = Eq(0);
+  EXPECT_TRUE(Value(0, is_zero));
+  EXPECT_FALSE(Value('a', is_zero));
+
+  int n = 0;
+  const Matcher<const int&> ref_n = Ref(n);
+  EXPECT_TRUE(Value(n, ref_n));
+  EXPECT_FALSE(Value(1, ref_n));
+}
+
+TEST(ExplainMatchResultTest, WorksWithPolymorphicMatcher) {
+  StringMatchResultListener listener1;
+  EXPECT_TRUE(ExplainMatchResult(PolymorphicIsEven(), 42, &listener1));
+  EXPECT_EQ("% 2 == 0", listener1.str());
+
+  StringMatchResultListener listener2;
+  EXPECT_FALSE(ExplainMatchResult(Ge(42), 1.5, &listener2));
+  EXPECT_EQ("", listener2.str());
+}
+
+TEST(ExplainMatchResultTest, WorksWithMonomorphicMatcher) {
+  const Matcher<int> is_even = PolymorphicIsEven();
+  StringMatchResultListener listener1;
+  EXPECT_TRUE(ExplainMatchResult(is_even, 42, &listener1));
+  EXPECT_EQ("% 2 == 0", listener1.str());
+
+  const Matcher<const double&> is_zero = Eq(0);
+  StringMatchResultListener listener2;
+  EXPECT_FALSE(ExplainMatchResult(is_zero, 1.5, &listener2));
+  EXPECT_EQ("", listener2.str());
+}
+
+MATCHER_P(Really, inner_matcher, "") {
+  return ExplainMatchResult(inner_matcher, arg, result_listener);
+}
+
+TEST(ExplainMatchResultTest, WorksInsideMATCHER) {
+  EXPECT_THAT(0, Really(Eq(0)));
+}
+
+TEST(DescribeMatcherTest, WorksWithValue) {
+  EXPECT_EQ("is equal to 42", DescribeMatcher<int>(42));
+  EXPECT_EQ("isn't equal to 42", DescribeMatcher<int>(42, true));
+}
+
+TEST(DescribeMatcherTest, WorksWithMonomorphicMatcher) {
+  const Matcher<int> monomorphic = Le(0);
+  EXPECT_EQ("is <= 0", DescribeMatcher<int>(monomorphic));
+  EXPECT_EQ("isn't <= 0", DescribeMatcher<int>(monomorphic, true));
+}
+
+TEST(DescribeMatcherTest, WorksWithPolymorphicMatcher) {
+  EXPECT_EQ("is even", DescribeMatcher<int>(PolymorphicIsEven()));
+  EXPECT_EQ("is odd", DescribeMatcher<int>(PolymorphicIsEven(), true));
+}
+
+TEST(AllArgsTest, WorksForTuple) {
+  EXPECT_THAT(std::make_tuple(1, 2L), AllArgs(Lt()));
+  EXPECT_THAT(std::make_tuple(2L, 1), Not(AllArgs(Lt())));
+}
+
+TEST(AllArgsTest, WorksForNonTuple) {
+  EXPECT_THAT(42, AllArgs(Gt(0)));
+  EXPECT_THAT('a', Not(AllArgs(Eq('b'))));
+}
+
+class AllArgsHelper {
+ public:
+  AllArgsHelper() {}
+
+  MOCK_METHOD2(Helper, int(char x, int y));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(AllArgsHelper);
+};
+
+TEST(AllArgsTest, WorksInWithClause) {
+  AllArgsHelper helper;
+  ON_CALL(helper, Helper(_, _))
+      .With(AllArgs(Lt()))
+      .WillByDefault(Return(1));
+  EXPECT_CALL(helper, Helper(_, _));
+  EXPECT_CALL(helper, Helper(_, _))
+      .With(AllArgs(Gt()))
+      .WillOnce(Return(2));
+
+  EXPECT_EQ(1, helper.Helper('\1', 2));
+  EXPECT_EQ(2, helper.Helper('a', 1));
+}
+
+class OptionalMatchersHelper {
+ public:
+  OptionalMatchersHelper() {}
+
+  MOCK_METHOD0(NoArgs, int());
+
+  MOCK_METHOD1(OneArg, int(int y));
+
+  MOCK_METHOD2(TwoArgs, int(char x, int y));
+
+  MOCK_METHOD1(Overloaded, int(char x));
+  MOCK_METHOD2(Overloaded, int(char x, int y));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(OptionalMatchersHelper);
+};
+
+TEST(AllArgsTest, WorksWithoutMatchers) {
+  OptionalMatchersHelper helper;
+
+  ON_CALL(helper, NoArgs).WillByDefault(Return(10));
+  ON_CALL(helper, OneArg).WillByDefault(Return(20));
+  ON_CALL(helper, TwoArgs).WillByDefault(Return(30));
+
+  EXPECT_EQ(10, helper.NoArgs());
+  EXPECT_EQ(20, helper.OneArg(1));
+  EXPECT_EQ(30, helper.TwoArgs('\1', 2));
+
+  EXPECT_CALL(helper, NoArgs).Times(1);
+  EXPECT_CALL(helper, OneArg).WillOnce(Return(100));
+  EXPECT_CALL(helper, OneArg(17)).WillOnce(Return(200));
+  EXPECT_CALL(helper, TwoArgs).Times(0);
+
+  EXPECT_EQ(10, helper.NoArgs());
+  EXPECT_EQ(100, helper.OneArg(1));
+  EXPECT_EQ(200, helper.OneArg(17));
+}
+
+// Tests that ASSERT_THAT() and EXPECT_THAT() work when the value
+// matches the matcher.
+TEST(MatcherAssertionTest, WorksWhenMatcherIsSatisfied) {
+  ASSERT_THAT(5, Ge(2)) << "This should succeed.";
+  ASSERT_THAT("Foo", EndsWith("oo"));
+  EXPECT_THAT(2, AllOf(Le(7), Ge(0))) << "This should succeed too.";
+  EXPECT_THAT("Hello", StartsWith("Hell"));
+}
+
+// Tests that ASSERT_THAT() and EXPECT_THAT() work when the value
+// doesn't match the matcher.
+TEST(MatcherAssertionTest, WorksWhenMatcherIsNotSatisfied) {
+  // 'n' must be static as it is used in an EXPECT_FATAL_FAILURE(),
+  // which cannot reference auto variables.
+  static unsigned short n;  // NOLINT
+  n = 5;
+
+  // VC++ prior to version 8.0 SP1 has a bug where it will not see any
+  // functions declared in the namespace scope from within nested classes.
+  // EXPECT/ASSERT_(NON)FATAL_FAILURE macros use nested classes so that all
+  // namespace-level functions invoked inside them need to be explicitly
+  // resolved.
+  EXPECT_FATAL_FAILURE(ASSERT_THAT(n, ::testing::Gt(10)),
+                       "Value of: n\n"
+                       "Expected: is > 10\n"
+                       "  Actual: 5" + OfType("unsigned short"));
+  n = 0;
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_THAT(n, ::testing::AllOf(::testing::Le(7), ::testing::Ge(5))),
+      "Value of: n\n"
+      "Expected: (is <= 7) and (is >= 5)\n"
+      "  Actual: 0" + OfType("unsigned short"));
+}
+
+// Tests that ASSERT_THAT() and EXPECT_THAT() work when the argument
+// has a reference type.
+TEST(MatcherAssertionTest, WorksForByRefArguments) {
+  // We use a static variable here as EXPECT_FATAL_FAILURE() cannot
+  // reference auto variables.
+  static int n;
+  n = 0;
+  EXPECT_THAT(n, AllOf(Le(7), Ref(n)));
+  EXPECT_FATAL_FAILURE(ASSERT_THAT(n, ::testing::Not(::testing::Ref(n))),
+                       "Value of: n\n"
+                       "Expected: does not reference the variable @");
+  // Tests the "Actual" part.
+  EXPECT_FATAL_FAILURE(ASSERT_THAT(n, ::testing::Not(::testing::Ref(n))),
+                       "Actual: 0" + OfType("int") + ", which is located @");
+}
+
+// Tests that ASSERT_THAT() and EXPECT_THAT() work when the matcher is
+// monomorphic.
+TEST(MatcherAssertionTest, WorksForMonomorphicMatcher) {
+  Matcher<const char*> starts_with_he = StartsWith("he");
+  ASSERT_THAT("hello", starts_with_he);
+
+  Matcher<const std::string&> ends_with_ok = EndsWith("ok");
+  ASSERT_THAT("book", ends_with_ok);
+  const std::string bad = "bad";
+  EXPECT_NONFATAL_FAILURE(EXPECT_THAT(bad, ends_with_ok),
+                          "Value of: bad\n"
+                          "Expected: ends with \"ok\"\n"
+                          "  Actual: \"bad\"");
+  Matcher<int> is_greater_than_5 = Gt(5);
+  EXPECT_NONFATAL_FAILURE(EXPECT_THAT(5, is_greater_than_5),
+                          "Value of: 5\n"
+                          "Expected: is > 5\n"
+                          "  Actual: 5" + OfType("int"));
+}
+
+// Tests floating-point matchers.
+template <typename RawType>
+class FloatingPointTest : public testing::Test {
+ protected:
+  typedef testing::internal::FloatingPoint<RawType> Floating;
+  typedef typename Floating::Bits Bits;
+
+  FloatingPointTest()
+      : max_ulps_(Floating::kMaxUlps),
+        zero_bits_(Floating(0).bits()),
+        one_bits_(Floating(1).bits()),
+        infinity_bits_(Floating(Floating::Infinity()).bits()),
+        close_to_positive_zero_(
+            Floating::ReinterpretBits(zero_bits_ + max_ulps_/2)),
+        close_to_negative_zero_(
+            -Floating::ReinterpretBits(zero_bits_ + max_ulps_ - max_ulps_/2)),
+        further_from_negative_zero_(-Floating::ReinterpretBits(
+            zero_bits_ + max_ulps_ + 1 - max_ulps_/2)),
+        close_to_one_(Floating::ReinterpretBits(one_bits_ + max_ulps_)),
+        further_from_one_(Floating::ReinterpretBits(one_bits_ + max_ulps_ + 1)),
+        infinity_(Floating::Infinity()),
+        close_to_infinity_(
+            Floating::ReinterpretBits(infinity_bits_ - max_ulps_)),
+        further_from_infinity_(
+            Floating::ReinterpretBits(infinity_bits_ - max_ulps_ - 1)),
+        max_(Floating::Max()),
+        nan1_(Floating::ReinterpretBits(Floating::kExponentBitMask | 1)),
+        nan2_(Floating::ReinterpretBits(Floating::kExponentBitMask | 200)) {
+  }
+
+  void TestSize() {
+    EXPECT_EQ(sizeof(RawType), sizeof(Bits));
+  }
+
+  // A battery of tests for FloatingEqMatcher::Matches.
+  // matcher_maker is a pointer to a function which creates a FloatingEqMatcher.
+  void TestMatches(
+      testing::internal::FloatingEqMatcher<RawType> (*matcher_maker)(RawType)) {
+    Matcher<RawType> m1 = matcher_maker(0.0);
+    EXPECT_TRUE(m1.Matches(-0.0));
+    EXPECT_TRUE(m1.Matches(close_to_positive_zero_));
+    EXPECT_TRUE(m1.Matches(close_to_negative_zero_));
+    EXPECT_FALSE(m1.Matches(1.0));
+
+    Matcher<RawType> m2 = matcher_maker(close_to_positive_zero_);
+    EXPECT_FALSE(m2.Matches(further_from_negative_zero_));
+
+    Matcher<RawType> m3 = matcher_maker(1.0);
+    EXPECT_TRUE(m3.Matches(close_to_one_));
+    EXPECT_FALSE(m3.Matches(further_from_one_));
+
+    // Test commutativity: matcher_maker(0.0).Matches(1.0) was tested above.
+    EXPECT_FALSE(m3.Matches(0.0));
+
+    Matcher<RawType> m4 = matcher_maker(-infinity_);
+    EXPECT_TRUE(m4.Matches(-close_to_infinity_));
+
+    Matcher<RawType> m5 = matcher_maker(infinity_);
+    EXPECT_TRUE(m5.Matches(close_to_infinity_));
+
+    // This is interesting as the representations of infinity_ and nan1_
+    // are only 1 DLP apart.
+    EXPECT_FALSE(m5.Matches(nan1_));
+
+    // matcher_maker can produce a Matcher<const RawType&>, which is needed in
+    // some cases.
+    Matcher<const RawType&> m6 = matcher_maker(0.0);
+    EXPECT_TRUE(m6.Matches(-0.0));
+    EXPECT_TRUE(m6.Matches(close_to_positive_zero_));
+    EXPECT_FALSE(m6.Matches(1.0));
+
+    // matcher_maker can produce a Matcher<RawType&>, which is needed in some
+    // cases.
+    Matcher<RawType&> m7 = matcher_maker(0.0);
+    RawType x = 0.0;
+    EXPECT_TRUE(m7.Matches(x));
+    x = 0.01f;
+    EXPECT_FALSE(m7.Matches(x));
+  }
+
+  // Pre-calculated numbers to be used by the tests.
+
+  const Bits max_ulps_;
+
+  const Bits zero_bits_;  // The bits that represent 0.0.
+  const Bits one_bits_;  // The bits that represent 1.0.
+  const Bits infinity_bits_;  // The bits that represent +infinity.
+
+  // Some numbers close to 0.0.
+  const RawType close_to_positive_zero_;
+  const RawType close_to_negative_zero_;
+  const RawType further_from_negative_zero_;
+
+  // Some numbers close to 1.0.
+  const RawType close_to_one_;
+  const RawType further_from_one_;
+
+  // Some numbers close to +infinity.
+  const RawType infinity_;
+  const RawType close_to_infinity_;
+  const RawType further_from_infinity_;
+
+  // Maximum representable value that's not infinity.
+  const RawType max_;
+
+  // Some NaNs.
+  const RawType nan1_;
+  const RawType nan2_;
+};
+
+// Tests floating-point matchers with fixed epsilons.
+template <typename RawType>
+class FloatingPointNearTest : public FloatingPointTest<RawType> {
+ protected:
+  typedef FloatingPointTest<RawType> ParentType;
+
+  // A battery of tests for FloatingEqMatcher::Matches with a fixed epsilon.
+  // matcher_maker is a pointer to a function which creates a FloatingEqMatcher.
+  void TestNearMatches(
+      testing::internal::FloatingEqMatcher<RawType>
+          (*matcher_maker)(RawType, RawType)) {
+    Matcher<RawType> m1 = matcher_maker(0.0, 0.0);
+    EXPECT_TRUE(m1.Matches(0.0));
+    EXPECT_TRUE(m1.Matches(-0.0));
+    EXPECT_FALSE(m1.Matches(ParentType::close_to_positive_zero_));
+    EXPECT_FALSE(m1.Matches(ParentType::close_to_negative_zero_));
+    EXPECT_FALSE(m1.Matches(1.0));
+
+    Matcher<RawType> m2 = matcher_maker(0.0, 1.0);
+    EXPECT_TRUE(m2.Matches(0.0));
+    EXPECT_TRUE(m2.Matches(-0.0));
+    EXPECT_TRUE(m2.Matches(1.0));
+    EXPECT_TRUE(m2.Matches(-1.0));
+    EXPECT_FALSE(m2.Matches(ParentType::close_to_one_));
+    EXPECT_FALSE(m2.Matches(-ParentType::close_to_one_));
+
+    // Check that inf matches inf, regardless of the of the specified max
+    // absolute error.
+    Matcher<RawType> m3 = matcher_maker(ParentType::infinity_, 0.0);
+    EXPECT_TRUE(m3.Matches(ParentType::infinity_));
+    EXPECT_FALSE(m3.Matches(ParentType::close_to_infinity_));
+    EXPECT_FALSE(m3.Matches(-ParentType::infinity_));
+
+    Matcher<RawType> m4 = matcher_maker(-ParentType::infinity_, 0.0);
+    EXPECT_TRUE(m4.Matches(-ParentType::infinity_));
+    EXPECT_FALSE(m4.Matches(-ParentType::close_to_infinity_));
+    EXPECT_FALSE(m4.Matches(ParentType::infinity_));
+
+    // Test various overflow scenarios.
+    Matcher<RawType> m5 = matcher_maker(ParentType::max_, ParentType::max_);
+    EXPECT_TRUE(m5.Matches(ParentType::max_));
+    EXPECT_FALSE(m5.Matches(-ParentType::max_));
+
+    Matcher<RawType> m6 = matcher_maker(-ParentType::max_, ParentType::max_);
+    EXPECT_FALSE(m6.Matches(ParentType::max_));
+    EXPECT_TRUE(m6.Matches(-ParentType::max_));
+
+    Matcher<RawType> m7 = matcher_maker(ParentType::max_, 0);
+    EXPECT_TRUE(m7.Matches(ParentType::max_));
+    EXPECT_FALSE(m7.Matches(-ParentType::max_));
+
+    Matcher<RawType> m8 = matcher_maker(-ParentType::max_, 0);
+    EXPECT_FALSE(m8.Matches(ParentType::max_));
+    EXPECT_TRUE(m8.Matches(-ParentType::max_));
+
+    // The difference between max() and -max() normally overflows to infinity,
+    // but it should still match if the max_abs_error is also infinity.
+    Matcher<RawType> m9 = matcher_maker(
+        ParentType::max_, ParentType::infinity_);
+    EXPECT_TRUE(m8.Matches(-ParentType::max_));
+
+    // matcher_maker can produce a Matcher<const RawType&>, which is needed in
+    // some cases.
+    Matcher<const RawType&> m10 = matcher_maker(0.0, 1.0);
+    EXPECT_TRUE(m10.Matches(-0.0));
+    EXPECT_TRUE(m10.Matches(ParentType::close_to_positive_zero_));
+    EXPECT_FALSE(m10.Matches(ParentType::close_to_one_));
+
+    // matcher_maker can produce a Matcher<RawType&>, which is needed in some
+    // cases.
+    Matcher<RawType&> m11 = matcher_maker(0.0, 1.0);
+    RawType x = 0.0;
+    EXPECT_TRUE(m11.Matches(x));
+    x = 1.0f;
+    EXPECT_TRUE(m11.Matches(x));
+    x = -1.0f;
+    EXPECT_TRUE(m11.Matches(x));
+    x = 1.1f;
+    EXPECT_FALSE(m11.Matches(x));
+    x = -1.1f;
+    EXPECT_FALSE(m11.Matches(x));
+  }
+};
+
+// Instantiate FloatingPointTest for testing floats.
+typedef FloatingPointTest<float> FloatTest;
+
+TEST_F(FloatTest, FloatEqApproximatelyMatchesFloats) {
+  TestMatches(&FloatEq);
+}
+
+TEST_F(FloatTest, NanSensitiveFloatEqApproximatelyMatchesFloats) {
+  TestMatches(&NanSensitiveFloatEq);
+}
+
+TEST_F(FloatTest, FloatEqCannotMatchNaN) {
+  // FloatEq never matches NaN.
+  Matcher<float> m = FloatEq(nan1_);
+  EXPECT_FALSE(m.Matches(nan1_));
+  EXPECT_FALSE(m.Matches(nan2_));
+  EXPECT_FALSE(m.Matches(1.0));
+}
+
+TEST_F(FloatTest, NanSensitiveFloatEqCanMatchNaN) {
+  // NanSensitiveFloatEq will match NaN.
+  Matcher<float> m = NanSensitiveFloatEq(nan1_);
+  EXPECT_TRUE(m.Matches(nan1_));
+  EXPECT_TRUE(m.Matches(nan2_));
+  EXPECT_FALSE(m.Matches(1.0));
+}
+
+TEST_F(FloatTest, FloatEqCanDescribeSelf) {
+  Matcher<float> m1 = FloatEq(2.0f);
+  EXPECT_EQ("is approximately 2", Describe(m1));
+  EXPECT_EQ("isn't approximately 2", DescribeNegation(m1));
+
+  Matcher<float> m2 = FloatEq(0.5f);
+  EXPECT_EQ("is approximately 0.5", Describe(m2));
+  EXPECT_EQ("isn't approximately 0.5", DescribeNegation(m2));
+
+  Matcher<float> m3 = FloatEq(nan1_);
+  EXPECT_EQ("never matches", Describe(m3));
+  EXPECT_EQ("is anything", DescribeNegation(m3));
+}
+
+TEST_F(FloatTest, NanSensitiveFloatEqCanDescribeSelf) {
+  Matcher<float> m1 = NanSensitiveFloatEq(2.0f);
+  EXPECT_EQ("is approximately 2", Describe(m1));
+  EXPECT_EQ("isn't approximately 2", DescribeNegation(m1));
+
+  Matcher<float> m2 = NanSensitiveFloatEq(0.5f);
+  EXPECT_EQ("is approximately 0.5", Describe(m2));
+  EXPECT_EQ("isn't approximately 0.5", DescribeNegation(m2));
+
+  Matcher<float> m3 = NanSensitiveFloatEq(nan1_);
+  EXPECT_EQ("is NaN", Describe(m3));
+  EXPECT_EQ("isn't NaN", DescribeNegation(m3));
+}
+
+// Instantiate FloatingPointTest for testing floats with a user-specified
+// max absolute error.
+typedef FloatingPointNearTest<float> FloatNearTest;
+
+TEST_F(FloatNearTest, FloatNearMatches) {
+  TestNearMatches(&FloatNear);
+}
+
+TEST_F(FloatNearTest, NanSensitiveFloatNearApproximatelyMatchesFloats) {
+  TestNearMatches(&NanSensitiveFloatNear);
+}
+
+TEST_F(FloatNearTest, FloatNearCanDescribeSelf) {
+  Matcher<float> m1 = FloatNear(2.0f, 0.5f);
+  EXPECT_EQ("is approximately 2 (absolute error <= 0.5)", Describe(m1));
+  EXPECT_EQ(
+      "isn't approximately 2 (absolute error > 0.5)", DescribeNegation(m1));
+
+  Matcher<float> m2 = FloatNear(0.5f, 0.5f);
+  EXPECT_EQ("is approximately 0.5 (absolute error <= 0.5)", Describe(m2));
+  EXPECT_EQ(
+      "isn't approximately 0.5 (absolute error > 0.5)", DescribeNegation(m2));
+
+  Matcher<float> m3 = FloatNear(nan1_, 0.0);
+  EXPECT_EQ("never matches", Describe(m3));
+  EXPECT_EQ("is anything", DescribeNegation(m3));
+}
+
+TEST_F(FloatNearTest, NanSensitiveFloatNearCanDescribeSelf) {
+  Matcher<float> m1 = NanSensitiveFloatNear(2.0f, 0.5f);
+  EXPECT_EQ("is approximately 2 (absolute error <= 0.5)", Describe(m1));
+  EXPECT_EQ(
+      "isn't approximately 2 (absolute error > 0.5)", DescribeNegation(m1));
+
+  Matcher<float> m2 = NanSensitiveFloatNear(0.5f, 0.5f);
+  EXPECT_EQ("is approximately 0.5 (absolute error <= 0.5)", Describe(m2));
+  EXPECT_EQ(
+      "isn't approximately 0.5 (absolute error > 0.5)", DescribeNegation(m2));
+
+  Matcher<float> m3 = NanSensitiveFloatNear(nan1_, 0.1f);
+  EXPECT_EQ("is NaN", Describe(m3));
+  EXPECT_EQ("isn't NaN", DescribeNegation(m3));
+}
+
+TEST_F(FloatNearTest, FloatNearCannotMatchNaN) {
+  // FloatNear never matches NaN.
+  Matcher<float> m = FloatNear(ParentType::nan1_, 0.1f);
+  EXPECT_FALSE(m.Matches(nan1_));
+  EXPECT_FALSE(m.Matches(nan2_));
+  EXPECT_FALSE(m.Matches(1.0));
+}
+
+TEST_F(FloatNearTest, NanSensitiveFloatNearCanMatchNaN) {
+  // NanSensitiveFloatNear will match NaN.
+  Matcher<float> m = NanSensitiveFloatNear(nan1_, 0.1f);
+  EXPECT_TRUE(m.Matches(nan1_));
+  EXPECT_TRUE(m.Matches(nan2_));
+  EXPECT_FALSE(m.Matches(1.0));
+}
+
+// Instantiate FloatingPointTest for testing doubles.
+typedef FloatingPointTest<double> DoubleTest;
+
+TEST_F(DoubleTest, DoubleEqApproximatelyMatchesDoubles) {
+  TestMatches(&DoubleEq);
+}
+
+TEST_F(DoubleTest, NanSensitiveDoubleEqApproximatelyMatchesDoubles) {
+  TestMatches(&NanSensitiveDoubleEq);
+}
+
+TEST_F(DoubleTest, DoubleEqCannotMatchNaN) {
+  // DoubleEq never matches NaN.
+  Matcher<double> m = DoubleEq(nan1_);
+  EXPECT_FALSE(m.Matches(nan1_));
+  EXPECT_FALSE(m.Matches(nan2_));
+  EXPECT_FALSE(m.Matches(1.0));
+}
+
+TEST_F(DoubleTest, NanSensitiveDoubleEqCanMatchNaN) {
+  // NanSensitiveDoubleEq will match NaN.
+  Matcher<double> m = NanSensitiveDoubleEq(nan1_);
+  EXPECT_TRUE(m.Matches(nan1_));
+  EXPECT_TRUE(m.Matches(nan2_));
+  EXPECT_FALSE(m.Matches(1.0));
+}
+
+TEST_F(DoubleTest, DoubleEqCanDescribeSelf) {
+  Matcher<double> m1 = DoubleEq(2.0);
+  EXPECT_EQ("is approximately 2", Describe(m1));
+  EXPECT_EQ("isn't approximately 2", DescribeNegation(m1));
+
+  Matcher<double> m2 = DoubleEq(0.5);
+  EXPECT_EQ("is approximately 0.5", Describe(m2));
+  EXPECT_EQ("isn't approximately 0.5", DescribeNegation(m2));
+
+  Matcher<double> m3 = DoubleEq(nan1_);
+  EXPECT_EQ("never matches", Describe(m3));
+  EXPECT_EQ("is anything", DescribeNegation(m3));
+}
+
+TEST_F(DoubleTest, NanSensitiveDoubleEqCanDescribeSelf) {
+  Matcher<double> m1 = NanSensitiveDoubleEq(2.0);
+  EXPECT_EQ("is approximately 2", Describe(m1));
+  EXPECT_EQ("isn't approximately 2", DescribeNegation(m1));
+
+  Matcher<double> m2 = NanSensitiveDoubleEq(0.5);
+  EXPECT_EQ("is approximately 0.5", Describe(m2));
+  EXPECT_EQ("isn't approximately 0.5", DescribeNegation(m2));
+
+  Matcher<double> m3 = NanSensitiveDoubleEq(nan1_);
+  EXPECT_EQ("is NaN", Describe(m3));
+  EXPECT_EQ("isn't NaN", DescribeNegation(m3));
+}
+
+// Instantiate FloatingPointTest for testing floats with a user-specified
+// max absolute error.
+typedef FloatingPointNearTest<double> DoubleNearTest;
+
+TEST_F(DoubleNearTest, DoubleNearMatches) {
+  TestNearMatches(&DoubleNear);
+}
+
+TEST_F(DoubleNearTest, NanSensitiveDoubleNearApproximatelyMatchesDoubles) {
+  TestNearMatches(&NanSensitiveDoubleNear);
+}
+
+TEST_F(DoubleNearTest, DoubleNearCanDescribeSelf) {
+  Matcher<double> m1 = DoubleNear(2.0, 0.5);
+  EXPECT_EQ("is approximately 2 (absolute error <= 0.5)", Describe(m1));
+  EXPECT_EQ(
+      "isn't approximately 2 (absolute error > 0.5)", DescribeNegation(m1));
+
+  Matcher<double> m2 = DoubleNear(0.5, 0.5);
+  EXPECT_EQ("is approximately 0.5 (absolute error <= 0.5)", Describe(m2));
+  EXPECT_EQ(
+      "isn't approximately 0.5 (absolute error > 0.5)", DescribeNegation(m2));
+
+  Matcher<double> m3 = DoubleNear(nan1_, 0.0);
+  EXPECT_EQ("never matches", Describe(m3));
+  EXPECT_EQ("is anything", DescribeNegation(m3));
+}
+
+TEST_F(DoubleNearTest, ExplainsResultWhenMatchFails) {
+  EXPECT_EQ("", Explain(DoubleNear(2.0, 0.1), 2.05));
+  EXPECT_EQ("which is 0.2 from 2", Explain(DoubleNear(2.0, 0.1), 2.2));
+  EXPECT_EQ("which is -0.3 from 2", Explain(DoubleNear(2.0, 0.1), 1.7));
+
+  const std::string explanation =
+      Explain(DoubleNear(2.1, 1e-10), 2.1 + 1.2e-10);
+  // Different C++ implementations may print floating-point numbers
+  // slightly differently.
+  EXPECT_TRUE(explanation == "which is 1.2e-10 from 2.1" ||  // GCC
+              explanation == "which is 1.2e-010 from 2.1")   // MSVC
+      << " where explanation is \"" << explanation << "\".";
+}
+
+TEST_F(DoubleNearTest, NanSensitiveDoubleNearCanDescribeSelf) {
+  Matcher<double> m1 = NanSensitiveDoubleNear(2.0, 0.5);
+  EXPECT_EQ("is approximately 2 (absolute error <= 0.5)", Describe(m1));
+  EXPECT_EQ(
+      "isn't approximately 2 (absolute error > 0.5)", DescribeNegation(m1));
+
+  Matcher<double> m2 = NanSensitiveDoubleNear(0.5, 0.5);
+  EXPECT_EQ("is approximately 0.5 (absolute error <= 0.5)", Describe(m2));
+  EXPECT_EQ(
+      "isn't approximately 0.5 (absolute error > 0.5)", DescribeNegation(m2));
+
+  Matcher<double> m3 = NanSensitiveDoubleNear(nan1_, 0.1);
+  EXPECT_EQ("is NaN", Describe(m3));
+  EXPECT_EQ("isn't NaN", DescribeNegation(m3));
+}
+
+TEST_F(DoubleNearTest, DoubleNearCannotMatchNaN) {
+  // DoubleNear never matches NaN.
+  Matcher<double> m = DoubleNear(ParentType::nan1_, 0.1);
+  EXPECT_FALSE(m.Matches(nan1_));
+  EXPECT_FALSE(m.Matches(nan2_));
+  EXPECT_FALSE(m.Matches(1.0));
+}
+
+TEST_F(DoubleNearTest, NanSensitiveDoubleNearCanMatchNaN) {
+  // NanSensitiveDoubleNear will match NaN.
+  Matcher<double> m = NanSensitiveDoubleNear(nan1_, 0.1);
+  EXPECT_TRUE(m.Matches(nan1_));
+  EXPECT_TRUE(m.Matches(nan2_));
+  EXPECT_FALSE(m.Matches(1.0));
+}
+
+TEST(PointeeTest, RawPointer) {
+  const Matcher<int*> m = Pointee(Ge(0));
+
+  int n = 1;
+  EXPECT_TRUE(m.Matches(&n));
+  n = -1;
+  EXPECT_FALSE(m.Matches(&n));
+  EXPECT_FALSE(m.Matches(nullptr));
+}
+
+TEST(PointeeTest, RawPointerToConst) {
+  const Matcher<const double*> m = Pointee(Ge(0));
+
+  double x = 1;
+  EXPECT_TRUE(m.Matches(&x));
+  x = -1;
+  EXPECT_FALSE(m.Matches(&x));
+  EXPECT_FALSE(m.Matches(nullptr));
+}
+
+TEST(PointeeTest, ReferenceToConstRawPointer) {
+  const Matcher<int* const &> m = Pointee(Ge(0));
+
+  int n = 1;
+  EXPECT_TRUE(m.Matches(&n));
+  n = -1;
+  EXPECT_FALSE(m.Matches(&n));
+  EXPECT_FALSE(m.Matches(nullptr));
+}
+
+TEST(PointeeTest, ReferenceToNonConstRawPointer) {
+  const Matcher<double* &> m = Pointee(Ge(0));
+
+  double x = 1.0;
+  double* p = &x;
+  EXPECT_TRUE(m.Matches(p));
+  x = -1;
+  EXPECT_FALSE(m.Matches(p));
+  p = nullptr;
+  EXPECT_FALSE(m.Matches(p));
+}
+
+MATCHER_P(FieldIIs, inner_matcher, "") {
+  return ExplainMatchResult(inner_matcher, arg.i, result_listener);
+}
+
+#if GTEST_HAS_RTTI
+TEST(WhenDynamicCastToTest, SameType) {
+  Derived derived;
+  derived.i = 4;
+
+  // Right type. A pointer is passed down.
+  Base* as_base_ptr = &derived;
+  EXPECT_THAT(as_base_ptr, WhenDynamicCastTo<Derived*>(Not(IsNull())));
+  EXPECT_THAT(as_base_ptr, WhenDynamicCastTo<Derived*>(Pointee(FieldIIs(4))));
+  EXPECT_THAT(as_base_ptr,
+              Not(WhenDynamicCastTo<Derived*>(Pointee(FieldIIs(5)))));
+}
+
+TEST(WhenDynamicCastToTest, WrongTypes) {
+  Base base;
+  Derived derived;
+  OtherDerived other_derived;
+
+  // Wrong types. NULL is passed.
+  EXPECT_THAT(&base, Not(WhenDynamicCastTo<Derived*>(Pointee(_))));
+  EXPECT_THAT(&base, WhenDynamicCastTo<Derived*>(IsNull()));
+  Base* as_base_ptr = &derived;
+  EXPECT_THAT(as_base_ptr, Not(WhenDynamicCastTo<OtherDerived*>(Pointee(_))));
+  EXPECT_THAT(as_base_ptr, WhenDynamicCastTo<OtherDerived*>(IsNull()));
+  as_base_ptr = &other_derived;
+  EXPECT_THAT(as_base_ptr, Not(WhenDynamicCastTo<Derived*>(Pointee(_))));
+  EXPECT_THAT(as_base_ptr, WhenDynamicCastTo<Derived*>(IsNull()));
+}
+
+TEST(WhenDynamicCastToTest, AlreadyNull) {
+  // Already NULL.
+  Base* as_base_ptr = nullptr;
+  EXPECT_THAT(as_base_ptr, WhenDynamicCastTo<Derived*>(IsNull()));
+}
+
+struct AmbiguousCastTypes {
+  class VirtualDerived : public virtual Base {};
+  class DerivedSub1 : public VirtualDerived {};
+  class DerivedSub2 : public VirtualDerived {};
+  class ManyDerivedInHierarchy : public DerivedSub1, public DerivedSub2 {};
+};
+
+TEST(WhenDynamicCastToTest, AmbiguousCast) {
+  AmbiguousCastTypes::DerivedSub1 sub1;
+  AmbiguousCastTypes::ManyDerivedInHierarchy many_derived;
+  // Multiply derived from Base. dynamic_cast<> returns NULL.
+  Base* as_base_ptr =
+      static_cast<AmbiguousCastTypes::DerivedSub1*>(&many_derived);
+  EXPECT_THAT(as_base_ptr,
+              WhenDynamicCastTo<AmbiguousCastTypes::VirtualDerived*>(IsNull()));
+  as_base_ptr = &sub1;
+  EXPECT_THAT(
+      as_base_ptr,
+      WhenDynamicCastTo<AmbiguousCastTypes::VirtualDerived*>(Not(IsNull())));
+}
+
+TEST(WhenDynamicCastToTest, Describe) {
+  Matcher<Base*> matcher = WhenDynamicCastTo<Derived*>(Pointee(_));
+  const std::string prefix =
+      "when dynamic_cast to " + internal::GetTypeName<Derived*>() + ", ";
+  EXPECT_EQ(prefix + "points to a value that is anything", Describe(matcher));
+  EXPECT_EQ(prefix + "does not point to a value that is anything",
+            DescribeNegation(matcher));
+}
+
+TEST(WhenDynamicCastToTest, Explain) {
+  Matcher<Base*> matcher = WhenDynamicCastTo<Derived*>(Pointee(_));
+  Base* null = nullptr;
+  EXPECT_THAT(Explain(matcher, null), HasSubstr("NULL"));
+  Derived derived;
+  EXPECT_TRUE(matcher.Matches(&derived));
+  EXPECT_THAT(Explain(matcher, &derived), HasSubstr("which points to "));
+
+  // With references, the matcher itself can fail. Test for that one.
+  Matcher<const Base&> ref_matcher = WhenDynamicCastTo<const OtherDerived&>(_);
+  EXPECT_THAT(Explain(ref_matcher, derived),
+              HasSubstr("which cannot be dynamic_cast"));
+}
+
+TEST(WhenDynamicCastToTest, GoodReference) {
+  Derived derived;
+  derived.i = 4;
+  Base& as_base_ref = derived;
+  EXPECT_THAT(as_base_ref, WhenDynamicCastTo<const Derived&>(FieldIIs(4)));
+  EXPECT_THAT(as_base_ref, WhenDynamicCastTo<const Derived&>(Not(FieldIIs(5))));
+}
+
+TEST(WhenDynamicCastToTest, BadReference) {
+  Derived derived;
+  Base& as_base_ref = derived;
+  EXPECT_THAT(as_base_ref, Not(WhenDynamicCastTo<const OtherDerived&>(_)));
+}
+#endif  // GTEST_HAS_RTTI
+
+// Minimal const-propagating pointer.
+template <typename T>
+class ConstPropagatingPtr {
+ public:
+  typedef T element_type;
+
+  ConstPropagatingPtr() : val_() {}
+  explicit ConstPropagatingPtr(T* t) : val_(t) {}
+  ConstPropagatingPtr(const ConstPropagatingPtr& other) : val_(other.val_) {}
+
+  T* get() { return val_; }
+  T& operator*() { return *val_; }
+  // Most smart pointers return non-const T* and T& from the next methods.
+  const T* get() const { return val_; }
+  const T& operator*() const { return *val_; }
+
+ private:
+  T* val_;
+};
+
+TEST(PointeeTest, WorksWithConstPropagatingPointers) {
+  const Matcher< ConstPropagatingPtr<int> > m = Pointee(Lt(5));
+  int three = 3;
+  const ConstPropagatingPtr<int> co(&three);
+  ConstPropagatingPtr<int> o(&three);
+  EXPECT_TRUE(m.Matches(o));
+  EXPECT_TRUE(m.Matches(co));
+  *o = 6;
+  EXPECT_FALSE(m.Matches(o));
+  EXPECT_FALSE(m.Matches(ConstPropagatingPtr<int>()));
+}
+
+TEST(PointeeTest, NeverMatchesNull) {
+  const Matcher<const char*> m = Pointee(_);
+  EXPECT_FALSE(m.Matches(nullptr));
+}
+
+// Tests that we can write Pointee(value) instead of Pointee(Eq(value)).
+TEST(PointeeTest, MatchesAgainstAValue) {
+  const Matcher<int*> m = Pointee(5);
+
+  int n = 5;
+  EXPECT_TRUE(m.Matches(&n));
+  n = -1;
+  EXPECT_FALSE(m.Matches(&n));
+  EXPECT_FALSE(m.Matches(nullptr));
+}
+
+TEST(PointeeTest, CanDescribeSelf) {
+  const Matcher<int*> m = Pointee(Gt(3));
+  EXPECT_EQ("points to a value that is > 3", Describe(m));
+  EXPECT_EQ("does not point to a value that is > 3",
+            DescribeNegation(m));
+}
+
+TEST(PointeeTest, CanExplainMatchResult) {
+  const Matcher<const std::string*> m = Pointee(StartsWith("Hi"));
+
+  EXPECT_EQ("", Explain(m, static_cast<const std::string*>(nullptr)));
+
+  const Matcher<long*> m2 = Pointee(GreaterThan(1));  // NOLINT
+  long n = 3;  // NOLINT
+  EXPECT_EQ("which points to 3" + OfType("long") + ", which is 2 more than 1",
+            Explain(m2, &n));
+}
+
+TEST(PointeeTest, AlwaysExplainsPointee) {
+  const Matcher<int*> m = Pointee(0);
+  int n = 42;
+  EXPECT_EQ("which points to 42" + OfType("int"), Explain(m, &n));
+}
+
+// An uncopyable class.
+class Uncopyable {
+ public:
+  Uncopyable() : value_(-1) {}
+  explicit Uncopyable(int a_value) : value_(a_value) {}
+
+  int value() const { return value_; }
+  void set_value(int i) { value_ = i; }
+
+ private:
+  int value_;
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(Uncopyable);
+};
+
+// Returns true if and only if x.value() is positive.
+bool ValueIsPositive(const Uncopyable& x) { return x.value() > 0; }
+
+MATCHER_P(UncopyableIs, inner_matcher, "") {
+  return ExplainMatchResult(inner_matcher, arg.value(), result_listener);
+}
+
+// A user-defined struct for testing Field().
+struct AStruct {
+  AStruct() : x(0), y(1.0), z(5), p(nullptr) {}
+  AStruct(const AStruct& rhs)
+      : x(rhs.x), y(rhs.y), z(rhs.z.value()), p(rhs.p) {}
+
+  int x;           // A non-const field.
+  const double y;  // A const field.
+  Uncopyable z;    // An uncopyable field.
+  const char* p;   // A pointer field.
+
+ private:
+  GTEST_DISALLOW_ASSIGN_(AStruct);
+};
+
+// A derived struct for testing Field().
+struct DerivedStruct : public AStruct {
+  char ch;
+
+ private:
+  GTEST_DISALLOW_ASSIGN_(DerivedStruct);
+};
+
+// Tests that Field(&Foo::field, ...) works when field is non-const.
+TEST(FieldTest, WorksForNonConstField) {
+  Matcher<AStruct> m = Field(&AStruct::x, Ge(0));
+  Matcher<AStruct> m_with_name = Field("x", &AStruct::x, Ge(0));
+
+  AStruct a;
+  EXPECT_TRUE(m.Matches(a));
+  EXPECT_TRUE(m_with_name.Matches(a));
+  a.x = -1;
+  EXPECT_FALSE(m.Matches(a));
+  EXPECT_FALSE(m_with_name.Matches(a));
+}
+
+// Tests that Field(&Foo::field, ...) works when field is const.
+TEST(FieldTest, WorksForConstField) {
+  AStruct a;
+
+  Matcher<AStruct> m = Field(&AStruct::y, Ge(0.0));
+  Matcher<AStruct> m_with_name = Field("y", &AStruct::y, Ge(0.0));
+  EXPECT_TRUE(m.Matches(a));
+  EXPECT_TRUE(m_with_name.Matches(a));
+  m = Field(&AStruct::y, Le(0.0));
+  m_with_name = Field("y", &AStruct::y, Le(0.0));
+  EXPECT_FALSE(m.Matches(a));
+  EXPECT_FALSE(m_with_name.Matches(a));
+}
+
+// Tests that Field(&Foo::field, ...) works when field is not copyable.
+TEST(FieldTest, WorksForUncopyableField) {
+  AStruct a;
+
+  Matcher<AStruct> m = Field(&AStruct::z, Truly(ValueIsPositive));
+  EXPECT_TRUE(m.Matches(a));
+  m = Field(&AStruct::z, Not(Truly(ValueIsPositive)));
+  EXPECT_FALSE(m.Matches(a));
+}
+
+// Tests that Field(&Foo::field, ...) works when field is a pointer.
+TEST(FieldTest, WorksForPointerField) {
+  // Matching against NULL.
+  Matcher<AStruct> m = Field(&AStruct::p, static_cast<const char*>(nullptr));
+  AStruct a;
+  EXPECT_TRUE(m.Matches(a));
+  a.p = "hi";
+  EXPECT_FALSE(m.Matches(a));
+
+  // Matching a pointer that is not NULL.
+  m = Field(&AStruct::p, StartsWith("hi"));
+  a.p = "hill";
+  EXPECT_TRUE(m.Matches(a));
+  a.p = "hole";
+  EXPECT_FALSE(m.Matches(a));
+}
+
+// Tests that Field() works when the object is passed by reference.
+TEST(FieldTest, WorksForByRefArgument) {
+  Matcher<const AStruct&> m = Field(&AStruct::x, Ge(0));
+
+  AStruct a;
+  EXPECT_TRUE(m.Matches(a));
+  a.x = -1;
+  EXPECT_FALSE(m.Matches(a));
+}
+
+// Tests that Field(&Foo::field, ...) works when the argument's type
+// is a sub-type of Foo.
+TEST(FieldTest, WorksForArgumentOfSubType) {
+  // Note that the matcher expects DerivedStruct but we say AStruct
+  // inside Field().
+  Matcher<const DerivedStruct&> m = Field(&AStruct::x, Ge(0));
+
+  DerivedStruct d;
+  EXPECT_TRUE(m.Matches(d));
+  d.x = -1;
+  EXPECT_FALSE(m.Matches(d));
+}
+
+// Tests that Field(&Foo::field, m) works when field's type and m's
+// argument type are compatible but not the same.
+TEST(FieldTest, WorksForCompatibleMatcherType) {
+  // The field is an int, but the inner matcher expects a signed char.
+  Matcher<const AStruct&> m = Field(&AStruct::x,
+                                    Matcher<signed char>(Ge(0)));
+
+  AStruct a;
+  EXPECT_TRUE(m.Matches(a));
+  a.x = -1;
+  EXPECT_FALSE(m.Matches(a));
+}
+
+// Tests that Field() can describe itself.
+TEST(FieldTest, CanDescribeSelf) {
+  Matcher<const AStruct&> m = Field(&AStruct::x, Ge(0));
+
+  EXPECT_EQ("is an object whose given field is >= 0", Describe(m));
+  EXPECT_EQ("is an object whose given field isn't >= 0", DescribeNegation(m));
+}
+
+TEST(FieldTest, CanDescribeSelfWithFieldName) {
+  Matcher<const AStruct&> m = Field("field_name", &AStruct::x, Ge(0));
+
+  EXPECT_EQ("is an object whose field `field_name` is >= 0", Describe(m));
+  EXPECT_EQ("is an object whose field `field_name` isn't >= 0",
+            DescribeNegation(m));
+}
+
+// Tests that Field() can explain the match result.
+TEST(FieldTest, CanExplainMatchResult) {
+  Matcher<const AStruct&> m = Field(&AStruct::x, Ge(0));
+
+  AStruct a;
+  a.x = 1;
+  EXPECT_EQ("whose given field is 1" + OfType("int"), Explain(m, a));
+
+  m = Field(&AStruct::x, GreaterThan(0));
+  EXPECT_EQ(
+      "whose given field is 1" + OfType("int") + ", which is 1 more than 0",
+      Explain(m, a));
+}
+
+TEST(FieldTest, CanExplainMatchResultWithFieldName) {
+  Matcher<const AStruct&> m = Field("field_name", &AStruct::x, Ge(0));
+
+  AStruct a;
+  a.x = 1;
+  EXPECT_EQ("whose field `field_name` is 1" + OfType("int"), Explain(m, a));
+
+  m = Field("field_name", &AStruct::x, GreaterThan(0));
+  EXPECT_EQ("whose field `field_name` is 1" + OfType("int") +
+                ", which is 1 more than 0",
+            Explain(m, a));
+}
+
+// Tests that Field() works when the argument is a pointer to const.
+TEST(FieldForPointerTest, WorksForPointerToConst) {
+  Matcher<const AStruct*> m = Field(&AStruct::x, Ge(0));
+
+  AStruct a;
+  EXPECT_TRUE(m.Matches(&a));
+  a.x = -1;
+  EXPECT_FALSE(m.Matches(&a));
+}
+
+// Tests that Field() works when the argument is a pointer to non-const.
+TEST(FieldForPointerTest, WorksForPointerToNonConst) {
+  Matcher<AStruct*> m = Field(&AStruct::x, Ge(0));
+
+  AStruct a;
+  EXPECT_TRUE(m.Matches(&a));
+  a.x = -1;
+  EXPECT_FALSE(m.Matches(&a));
+}
+
+// Tests that Field() works when the argument is a reference to a const pointer.
+TEST(FieldForPointerTest, WorksForReferenceToConstPointer) {
+  Matcher<AStruct* const&> m = Field(&AStruct::x, Ge(0));
+
+  AStruct a;
+  EXPECT_TRUE(m.Matches(&a));
+  a.x = -1;
+  EXPECT_FALSE(m.Matches(&a));
+}
+
+// Tests that Field() does not match the NULL pointer.
+TEST(FieldForPointerTest, DoesNotMatchNull) {
+  Matcher<const AStruct*> m = Field(&AStruct::x, _);
+  EXPECT_FALSE(m.Matches(nullptr));
+}
+
+// Tests that Field(&Foo::field, ...) works when the argument's type
+// is a sub-type of const Foo*.
+TEST(FieldForPointerTest, WorksForArgumentOfSubType) {
+  // Note that the matcher expects DerivedStruct but we say AStruct
+  // inside Field().
+  Matcher<DerivedStruct*> m = Field(&AStruct::x, Ge(0));
+
+  DerivedStruct d;
+  EXPECT_TRUE(m.Matches(&d));
+  d.x = -1;
+  EXPECT_FALSE(m.Matches(&d));
+}
+
+// Tests that Field() can describe itself when used to match a pointer.
+TEST(FieldForPointerTest, CanDescribeSelf) {
+  Matcher<const AStruct*> m = Field(&AStruct::x, Ge(0));
+
+  EXPECT_EQ("is an object whose given field is >= 0", Describe(m));
+  EXPECT_EQ("is an object whose given field isn't >= 0", DescribeNegation(m));
+}
+
+TEST(FieldForPointerTest, CanDescribeSelfWithFieldName) {
+  Matcher<const AStruct*> m = Field("field_name", &AStruct::x, Ge(0));
+
+  EXPECT_EQ("is an object whose field `field_name` is >= 0", Describe(m));
+  EXPECT_EQ("is an object whose field `field_name` isn't >= 0",
+            DescribeNegation(m));
+}
+
+// Tests that Field() can explain the result of matching a pointer.
+TEST(FieldForPointerTest, CanExplainMatchResult) {
+  Matcher<const AStruct*> m = Field(&AStruct::x, Ge(0));
+
+  AStruct a;
+  a.x = 1;
+  EXPECT_EQ("", Explain(m, static_cast<const AStruct*>(nullptr)));
+  EXPECT_EQ("which points to an object whose given field is 1" + OfType("int"),
+            Explain(m, &a));
+
+  m = Field(&AStruct::x, GreaterThan(0));
+  EXPECT_EQ("which points to an object whose given field is 1" + OfType("int") +
+            ", which is 1 more than 0", Explain(m, &a));
+}
+
+TEST(FieldForPointerTest, CanExplainMatchResultWithFieldName) {
+  Matcher<const AStruct*> m = Field("field_name", &AStruct::x, Ge(0));
+
+  AStruct a;
+  a.x = 1;
+  EXPECT_EQ("", Explain(m, static_cast<const AStruct*>(nullptr)));
+  EXPECT_EQ(
+      "which points to an object whose field `field_name` is 1" + OfType("int"),
+      Explain(m, &a));
+
+  m = Field("field_name", &AStruct::x, GreaterThan(0));
+  EXPECT_EQ("which points to an object whose field `field_name` is 1" +
+                OfType("int") + ", which is 1 more than 0",
+            Explain(m, &a));
+}
+
+// A user-defined class for testing Property().
+class AClass {
+ public:
+  AClass() : n_(0) {}
+
+  // A getter that returns a non-reference.
+  int n() const { return n_; }
+
+  void set_n(int new_n) { n_ = new_n; }
+
+  // A getter that returns a reference to const.
+  const std::string& s() const { return s_; }
+
+  const std::string& s_ref() const & { return s_; }
+
+  void set_s(const std::string& new_s) { s_ = new_s; }
+
+  // A getter that returns a reference to non-const.
+  double& x() const { return x_; }
+
+ private:
+  int n_;
+  std::string s_;
+
+  static double x_;
+};
+
+double AClass::x_ = 0.0;
+
+// A derived class for testing Property().
+class DerivedClass : public AClass {
+ public:
+  int k() const { return k_; }
+ private:
+  int k_;
+};
+
+// Tests that Property(&Foo::property, ...) works when property()
+// returns a non-reference.
+TEST(PropertyTest, WorksForNonReferenceProperty) {
+  Matcher<const AClass&> m = Property(&AClass::n, Ge(0));
+  Matcher<const AClass&> m_with_name = Property("n", &AClass::n, Ge(0));
+
+  AClass a;
+  a.set_n(1);
+  EXPECT_TRUE(m.Matches(a));
+  EXPECT_TRUE(m_with_name.Matches(a));
+
+  a.set_n(-1);
+  EXPECT_FALSE(m.Matches(a));
+  EXPECT_FALSE(m_with_name.Matches(a));
+}
+
+// Tests that Property(&Foo::property, ...) works when property()
+// returns a reference to const.
+TEST(PropertyTest, WorksForReferenceToConstProperty) {
+  Matcher<const AClass&> m = Property(&AClass::s, StartsWith("hi"));
+  Matcher<const AClass&> m_with_name =
+      Property("s", &AClass::s, StartsWith("hi"));
+
+  AClass a;
+  a.set_s("hill");
+  EXPECT_TRUE(m.Matches(a));
+  EXPECT_TRUE(m_with_name.Matches(a));
+
+  a.set_s("hole");
+  EXPECT_FALSE(m.Matches(a));
+  EXPECT_FALSE(m_with_name.Matches(a));
+}
+
+// Tests that Property(&Foo::property, ...) works when property() is
+// ref-qualified.
+TEST(PropertyTest, WorksForRefQualifiedProperty) {
+  Matcher<const AClass&> m = Property(&AClass::s_ref, StartsWith("hi"));
+  Matcher<const AClass&> m_with_name =
+      Property("s", &AClass::s_ref, StartsWith("hi"));
+
+  AClass a;
+  a.set_s("hill");
+  EXPECT_TRUE(m.Matches(a));
+  EXPECT_TRUE(m_with_name.Matches(a));
+
+  a.set_s("hole");
+  EXPECT_FALSE(m.Matches(a));
+  EXPECT_FALSE(m_with_name.Matches(a));
+}
+
+// Tests that Property(&Foo::property, ...) works when property()
+// returns a reference to non-const.
+TEST(PropertyTest, WorksForReferenceToNonConstProperty) {
+  double x = 0.0;
+  AClass a;
+
+  Matcher<const AClass&> m = Property(&AClass::x, Ref(x));
+  EXPECT_FALSE(m.Matches(a));
+
+  m = Property(&AClass::x, Not(Ref(x)));
+  EXPECT_TRUE(m.Matches(a));
+}
+
+// Tests that Property(&Foo::property, ...) works when the argument is
+// passed by value.
+TEST(PropertyTest, WorksForByValueArgument) {
+  Matcher<AClass> m = Property(&AClass::s, StartsWith("hi"));
+
+  AClass a;
+  a.set_s("hill");
+  EXPECT_TRUE(m.Matches(a));
+
+  a.set_s("hole");
+  EXPECT_FALSE(m.Matches(a));
+}
+
+// Tests that Property(&Foo::property, ...) works when the argument's
+// type is a sub-type of Foo.
+TEST(PropertyTest, WorksForArgumentOfSubType) {
+  // The matcher expects a DerivedClass, but inside the Property() we
+  // say AClass.
+  Matcher<const DerivedClass&> m = Property(&AClass::n, Ge(0));
+
+  DerivedClass d;
+  d.set_n(1);
+  EXPECT_TRUE(m.Matches(d));
+
+  d.set_n(-1);
+  EXPECT_FALSE(m.Matches(d));
+}
+
+// Tests that Property(&Foo::property, m) works when property()'s type
+// and m's argument type are compatible but different.
+TEST(PropertyTest, WorksForCompatibleMatcherType) {
+  // n() returns an int but the inner matcher expects a signed char.
+  Matcher<const AClass&> m = Property(&AClass::n,
+                                      Matcher<signed char>(Ge(0)));
+
+  Matcher<const AClass&> m_with_name =
+      Property("n", &AClass::n, Matcher<signed char>(Ge(0)));
+
+  AClass a;
+  EXPECT_TRUE(m.Matches(a));
+  EXPECT_TRUE(m_with_name.Matches(a));
+  a.set_n(-1);
+  EXPECT_FALSE(m.Matches(a));
+  EXPECT_FALSE(m_with_name.Matches(a));
+}
+
+// Tests that Property() can describe itself.
+TEST(PropertyTest, CanDescribeSelf) {
+  Matcher<const AClass&> m = Property(&AClass::n, Ge(0));
+
+  EXPECT_EQ("is an object whose given property is >= 0", Describe(m));
+  EXPECT_EQ("is an object whose given property isn't >= 0",
+            DescribeNegation(m));
+}
+
+TEST(PropertyTest, CanDescribeSelfWithPropertyName) {
+  Matcher<const AClass&> m = Property("fancy_name", &AClass::n, Ge(0));
+
+  EXPECT_EQ("is an object whose property `fancy_name` is >= 0", Describe(m));
+  EXPECT_EQ("is an object whose property `fancy_name` isn't >= 0",
+            DescribeNegation(m));
+}
+
+// Tests that Property() can explain the match result.
+TEST(PropertyTest, CanExplainMatchResult) {
+  Matcher<const AClass&> m = Property(&AClass::n, Ge(0));
+
+  AClass a;
+  a.set_n(1);
+  EXPECT_EQ("whose given property is 1" + OfType("int"), Explain(m, a));
+
+  m = Property(&AClass::n, GreaterThan(0));
+  EXPECT_EQ(
+      "whose given property is 1" + OfType("int") + ", which is 1 more than 0",
+      Explain(m, a));
+}
+
+TEST(PropertyTest, CanExplainMatchResultWithPropertyName) {
+  Matcher<const AClass&> m = Property("fancy_name", &AClass::n, Ge(0));
+
+  AClass a;
+  a.set_n(1);
+  EXPECT_EQ("whose property `fancy_name` is 1" + OfType("int"), Explain(m, a));
+
+  m = Property("fancy_name", &AClass::n, GreaterThan(0));
+  EXPECT_EQ("whose property `fancy_name` is 1" + OfType("int") +
+                ", which is 1 more than 0",
+            Explain(m, a));
+}
+
+// Tests that Property() works when the argument is a pointer to const.
+TEST(PropertyForPointerTest, WorksForPointerToConst) {
+  Matcher<const AClass*> m = Property(&AClass::n, Ge(0));
+
+  AClass a;
+  a.set_n(1);
+  EXPECT_TRUE(m.Matches(&a));
+
+  a.set_n(-1);
+  EXPECT_FALSE(m.Matches(&a));
+}
+
+// Tests that Property() works when the argument is a pointer to non-const.
+TEST(PropertyForPointerTest, WorksForPointerToNonConst) {
+  Matcher<AClass*> m = Property(&AClass::s, StartsWith("hi"));
+
+  AClass a;
+  a.set_s("hill");
+  EXPECT_TRUE(m.Matches(&a));
+
+  a.set_s("hole");
+  EXPECT_FALSE(m.Matches(&a));
+}
+
+// Tests that Property() works when the argument is a reference to a
+// const pointer.
+TEST(PropertyForPointerTest, WorksForReferenceToConstPointer) {
+  Matcher<AClass* const&> m = Property(&AClass::s, StartsWith("hi"));
+
+  AClass a;
+  a.set_s("hill");
+  EXPECT_TRUE(m.Matches(&a));
+
+  a.set_s("hole");
+  EXPECT_FALSE(m.Matches(&a));
+}
+
+// Tests that Property() does not match the NULL pointer.
+TEST(PropertyForPointerTest, WorksForReferenceToNonConstProperty) {
+  Matcher<const AClass*> m = Property(&AClass::x, _);
+  EXPECT_FALSE(m.Matches(nullptr));
+}
+
+// Tests that Property(&Foo::property, ...) works when the argument's
+// type is a sub-type of const Foo*.
+TEST(PropertyForPointerTest, WorksForArgumentOfSubType) {
+  // The matcher expects a DerivedClass, but inside the Property() we
+  // say AClass.
+  Matcher<const DerivedClass*> m = Property(&AClass::n, Ge(0));
+
+  DerivedClass d;
+  d.set_n(1);
+  EXPECT_TRUE(m.Matches(&d));
+
+  d.set_n(-1);
+  EXPECT_FALSE(m.Matches(&d));
+}
+
+// Tests that Property() can describe itself when used to match a pointer.
+TEST(PropertyForPointerTest, CanDescribeSelf) {
+  Matcher<const AClass*> m = Property(&AClass::n, Ge(0));
+
+  EXPECT_EQ("is an object whose given property is >= 0", Describe(m));
+  EXPECT_EQ("is an object whose given property isn't >= 0",
+            DescribeNegation(m));
+}
+
+TEST(PropertyForPointerTest, CanDescribeSelfWithPropertyDescription) {
+  Matcher<const AClass*> m = Property("fancy_name", &AClass::n, Ge(0));
+
+  EXPECT_EQ("is an object whose property `fancy_name` is >= 0", Describe(m));
+  EXPECT_EQ("is an object whose property `fancy_name` isn't >= 0",
+            DescribeNegation(m));
+}
+
+// Tests that Property() can explain the result of matching a pointer.
+TEST(PropertyForPointerTest, CanExplainMatchResult) {
+  Matcher<const AClass*> m = Property(&AClass::n, Ge(0));
+
+  AClass a;
+  a.set_n(1);
+  EXPECT_EQ("", Explain(m, static_cast<const AClass*>(nullptr)));
+  EXPECT_EQ(
+      "which points to an object whose given property is 1" + OfType("int"),
+      Explain(m, &a));
+
+  m = Property(&AClass::n, GreaterThan(0));
+  EXPECT_EQ("which points to an object whose given property is 1" +
+            OfType("int") + ", which is 1 more than 0",
+            Explain(m, &a));
+}
+
+TEST(PropertyForPointerTest, CanExplainMatchResultWithPropertyName) {
+  Matcher<const AClass*> m = Property("fancy_name", &AClass::n, Ge(0));
+
+  AClass a;
+  a.set_n(1);
+  EXPECT_EQ("", Explain(m, static_cast<const AClass*>(nullptr)));
+  EXPECT_EQ("which points to an object whose property `fancy_name` is 1" +
+                OfType("int"),
+            Explain(m, &a));
+
+  m = Property("fancy_name", &AClass::n, GreaterThan(0));
+  EXPECT_EQ("which points to an object whose property `fancy_name` is 1" +
+                OfType("int") + ", which is 1 more than 0",
+            Explain(m, &a));
+}
+
+// Tests ResultOf.
+
+// Tests that ResultOf(f, ...) compiles and works as expected when f is a
+// function pointer.
+std::string IntToStringFunction(int input) {
+  return input == 1 ? "foo" : "bar";
+}
+
+TEST(ResultOfTest, WorksForFunctionPointers) {
+  Matcher<int> matcher = ResultOf(&IntToStringFunction, Eq(std::string("foo")));
+
+  EXPECT_TRUE(matcher.Matches(1));
+  EXPECT_FALSE(matcher.Matches(2));
+}
+
+// Tests that ResultOf() can describe itself.
+TEST(ResultOfTest, CanDescribeItself) {
+  Matcher<int> matcher = ResultOf(&IntToStringFunction, StrEq("foo"));
+
+  EXPECT_EQ("is mapped by the given callable to a value that "
+            "is equal to \"foo\"", Describe(matcher));
+  EXPECT_EQ("is mapped by the given callable to a value that "
+            "isn't equal to \"foo\"", DescribeNegation(matcher));
+}
+
+// Tests that ResultOf() can explain the match result.
+int IntFunction(int input) { return input == 42 ? 80 : 90; }
+
+TEST(ResultOfTest, CanExplainMatchResult) {
+  Matcher<int> matcher = ResultOf(&IntFunction, Ge(85));
+  EXPECT_EQ("which is mapped by the given callable to 90" + OfType("int"),
+            Explain(matcher, 36));
+
+  matcher = ResultOf(&IntFunction, GreaterThan(85));
+  EXPECT_EQ("which is mapped by the given callable to 90" + OfType("int") +
+            ", which is 5 more than 85", Explain(matcher, 36));
+}
+
+// Tests that ResultOf(f, ...) compiles and works as expected when f(x)
+// returns a non-reference.
+TEST(ResultOfTest, WorksForNonReferenceResults) {
+  Matcher<int> matcher = ResultOf(&IntFunction, Eq(80));
+
+  EXPECT_TRUE(matcher.Matches(42));
+  EXPECT_FALSE(matcher.Matches(36));
+}
+
+// Tests that ResultOf(f, ...) compiles and works as expected when f(x)
+// returns a reference to non-const.
+double& DoubleFunction(double& input) { return input; }  // NOLINT
+
+Uncopyable& RefUncopyableFunction(Uncopyable& obj) {  // NOLINT
+  return obj;
+}
+
+TEST(ResultOfTest, WorksForReferenceToNonConstResults) {
+  double x = 3.14;
+  double x2 = x;
+  Matcher<double&> matcher = ResultOf(&DoubleFunction, Ref(x));
+
+  EXPECT_TRUE(matcher.Matches(x));
+  EXPECT_FALSE(matcher.Matches(x2));
+
+  // Test that ResultOf works with uncopyable objects
+  Uncopyable obj(0);
+  Uncopyable obj2(0);
+  Matcher<Uncopyable&> matcher2 =
+      ResultOf(&RefUncopyableFunction, Ref(obj));
+
+  EXPECT_TRUE(matcher2.Matches(obj));
+  EXPECT_FALSE(matcher2.Matches(obj2));
+}
+
+// Tests that ResultOf(f, ...) compiles and works as expected when f(x)
+// returns a reference to const.
+const std::string& StringFunction(const std::string& input) { return input; }
+
+TEST(ResultOfTest, WorksForReferenceToConstResults) {
+  std::string s = "foo";
+  std::string s2 = s;
+  Matcher<const std::string&> matcher = ResultOf(&StringFunction, Ref(s));
+
+  EXPECT_TRUE(matcher.Matches(s));
+  EXPECT_FALSE(matcher.Matches(s2));
+}
+
+// Tests that ResultOf(f, m) works when f(x) and m's
+// argument types are compatible but different.
+TEST(ResultOfTest, WorksForCompatibleMatcherTypes) {
+  // IntFunction() returns int but the inner matcher expects a signed char.
+  Matcher<int> matcher = ResultOf(IntFunction, Matcher<signed char>(Ge(85)));
+
+  EXPECT_TRUE(matcher.Matches(36));
+  EXPECT_FALSE(matcher.Matches(42));
+}
+
+// Tests that the program aborts when ResultOf is passed
+// a NULL function pointer.
+TEST(ResultOfDeathTest, DiesOnNullFunctionPointers) {
+  EXPECT_DEATH_IF_SUPPORTED(
+      ResultOf(static_cast<std::string (*)(int dummy)>(nullptr),
+               Eq(std::string("foo"))),
+      "NULL function pointer is passed into ResultOf\\(\\)\\.");
+}
+
+// Tests that ResultOf(f, ...) compiles and works as expected when f is a
+// function reference.
+TEST(ResultOfTest, WorksForFunctionReferences) {
+  Matcher<int> matcher = ResultOf(IntToStringFunction, StrEq("foo"));
+  EXPECT_TRUE(matcher.Matches(1));
+  EXPECT_FALSE(matcher.Matches(2));
+}
+
+// Tests that ResultOf(f, ...) compiles and works as expected when f is a
+// function object.
+struct Functor {
+  std::string operator()(int input) const {
+    return IntToStringFunction(input);
+  }
+};
+
+TEST(ResultOfTest, WorksForFunctors) {
+  Matcher<int> matcher = ResultOf(Functor(), Eq(std::string("foo")));
+
+  EXPECT_TRUE(matcher.Matches(1));
+  EXPECT_FALSE(matcher.Matches(2));
+}
+
+// Tests that ResultOf(f, ...) compiles and works as expected when f is a
+// functor with more than one operator() defined. ResultOf() must work
+// for each defined operator().
+struct PolymorphicFunctor {
+  typedef int result_type;
+  int operator()(int n) { return n; }
+  int operator()(const char* s) { return static_cast<int>(strlen(s)); }
+  std::string operator()(int *p) { return p ? "good ptr" : "null"; }
+};
+
+TEST(ResultOfTest, WorksForPolymorphicFunctors) {
+  Matcher<int> matcher_int = ResultOf(PolymorphicFunctor(), Ge(5));
+
+  EXPECT_TRUE(matcher_int.Matches(10));
+  EXPECT_FALSE(matcher_int.Matches(2));
+
+  Matcher<const char*> matcher_string = ResultOf(PolymorphicFunctor(), Ge(5));
+
+  EXPECT_TRUE(matcher_string.Matches("long string"));
+  EXPECT_FALSE(matcher_string.Matches("shrt"));
+}
+
+TEST(ResultOfTest, WorksForPolymorphicFunctorsIgnoringResultType) {
+  Matcher<int*> matcher = ResultOf(PolymorphicFunctor(), "good ptr");
+
+  int n = 0;
+  EXPECT_TRUE(matcher.Matches(&n));
+  EXPECT_FALSE(matcher.Matches(nullptr));
+}
+
+TEST(ResultOfTest, WorksForLambdas) {
+  Matcher<int> matcher = ResultOf(
+      [](int str_len) {
+        return std::string(static_cast<size_t>(str_len), 'x');
+      },
+      "xxx");
+  EXPECT_TRUE(matcher.Matches(3));
+  EXPECT_FALSE(matcher.Matches(1));
+}
+
+TEST(ResultOfTest, WorksForNonCopyableArguments) {
+  Matcher<std::unique_ptr<int>> matcher = ResultOf(
+      [](const std::unique_ptr<int>& str_len) {
+        return std::string(static_cast<size_t>(*str_len), 'x');
+      },
+      "xxx");
+  EXPECT_TRUE(matcher.Matches(std::unique_ptr<int>(new int(3))));
+  EXPECT_FALSE(matcher.Matches(std::unique_ptr<int>(new int(1))));
+}
+
+const int* ReferencingFunction(const int& n) { return &n; }
+
+struct ReferencingFunctor {
+  typedef const int* result_type;
+  result_type operator()(const int& n) { return &n; }
+};
+
+TEST(ResultOfTest, WorksForReferencingCallables) {
+  const int n = 1;
+  const int n2 = 1;
+  Matcher<const int&> matcher2 = ResultOf(ReferencingFunction, Eq(&n));
+  EXPECT_TRUE(matcher2.Matches(n));
+  EXPECT_FALSE(matcher2.Matches(n2));
+
+  Matcher<const int&> matcher3 = ResultOf(ReferencingFunctor(), Eq(&n));
+  EXPECT_TRUE(matcher3.Matches(n));
+  EXPECT_FALSE(matcher3.Matches(n2));
+}
+
+class DivisibleByImpl {
+ public:
+  explicit DivisibleByImpl(int a_divider) : divider_(a_divider) {}
+
+  // For testing using ExplainMatchResultTo() with polymorphic matchers.
+  template <typename T>
+  bool MatchAndExplain(const T& n, MatchResultListener* listener) const {
+    *listener << "which is " << (n % divider_) << " modulo "
+              << divider_;
+    return (n % divider_) == 0;
+  }
+
+  void DescribeTo(ostream* os) const {
+    *os << "is divisible by " << divider_;
+  }
+
+  void DescribeNegationTo(ostream* os) const {
+    *os << "is not divisible by " << divider_;
+  }
+
+  void set_divider(int a_divider) { divider_ = a_divider; }
+  int divider() const { return divider_; }
+
+ private:
+  int divider_;
+};
+
+PolymorphicMatcher<DivisibleByImpl> DivisibleBy(int n) {
+  return MakePolymorphicMatcher(DivisibleByImpl(n));
+}
+
+// Tests that when AllOf() fails, only the first failing matcher is
+// asked to explain why.
+TEST(ExplainMatchResultTest, AllOf_False_False) {
+  const Matcher<int> m = AllOf(DivisibleBy(4), DivisibleBy(3));
+  EXPECT_EQ("which is 1 modulo 4", Explain(m, 5));
+}
+
+// Tests that when AllOf() fails, only the first failing matcher is
+// asked to explain why.
+TEST(ExplainMatchResultTest, AllOf_False_True) {
+  const Matcher<int> m = AllOf(DivisibleBy(4), DivisibleBy(3));
+  EXPECT_EQ("which is 2 modulo 4", Explain(m, 6));
+}
+
+// Tests that when AllOf() fails, only the first failing matcher is
+// asked to explain why.
+TEST(ExplainMatchResultTest, AllOf_True_False) {
+  const Matcher<int> m = AllOf(Ge(1), DivisibleBy(3));
+  EXPECT_EQ("which is 2 modulo 3", Explain(m, 5));
+}
+
+// Tests that when AllOf() succeeds, all matchers are asked to explain
+// why.
+TEST(ExplainMatchResultTest, AllOf_True_True) {
+  const Matcher<int> m = AllOf(DivisibleBy(2), DivisibleBy(3));
+  EXPECT_EQ("which is 0 modulo 2, and which is 0 modulo 3", Explain(m, 6));
+}
+
+TEST(ExplainMatchResultTest, AllOf_True_True_2) {
+  const Matcher<int> m = AllOf(Ge(2), Le(3));
+  EXPECT_EQ("", Explain(m, 2));
+}
+
+TEST(ExplainmatcherResultTest, MonomorphicMatcher) {
+  const Matcher<int> m = GreaterThan(5);
+  EXPECT_EQ("which is 1 more than 5", Explain(m, 6));
+}
+
+// The following two tests verify that values without a public copy
+// ctor can be used as arguments to matchers like Eq(), Ge(), and etc
+// with the help of ByRef().
+
+class NotCopyable {
+ public:
+  explicit NotCopyable(int a_value) : value_(a_value) {}
+
+  int value() const { return value_; }
+
+  bool operator==(const NotCopyable& rhs) const {
+    return value() == rhs.value();
+  }
+
+  bool operator>=(const NotCopyable& rhs) const {
+    return value() >= rhs.value();
+  }
+ private:
+  int value_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(NotCopyable);
+};
+
+TEST(ByRefTest, AllowsNotCopyableConstValueInMatchers) {
+  const NotCopyable const_value1(1);
+  const Matcher<const NotCopyable&> m = Eq(ByRef(const_value1));
+
+  const NotCopyable n1(1), n2(2);
+  EXPECT_TRUE(m.Matches(n1));
+  EXPECT_FALSE(m.Matches(n2));
+}
+
+TEST(ByRefTest, AllowsNotCopyableValueInMatchers) {
+  NotCopyable value2(2);
+  const Matcher<NotCopyable&> m = Ge(ByRef(value2));
+
+  NotCopyable n1(1), n2(2);
+  EXPECT_FALSE(m.Matches(n1));
+  EXPECT_TRUE(m.Matches(n2));
+}
+
+TEST(IsEmptyTest, ImplementsIsEmpty) {
+  vector<int> container;
+  EXPECT_THAT(container, IsEmpty());
+  container.push_back(0);
+  EXPECT_THAT(container, Not(IsEmpty()));
+  container.push_back(1);
+  EXPECT_THAT(container, Not(IsEmpty()));
+}
+
+TEST(IsEmptyTest, WorksWithString) {
+  std::string text;
+  EXPECT_THAT(text, IsEmpty());
+  text = "foo";
+  EXPECT_THAT(text, Not(IsEmpty()));
+  text = std::string("\0", 1);
+  EXPECT_THAT(text, Not(IsEmpty()));
+}
+
+TEST(IsEmptyTest, CanDescribeSelf) {
+  Matcher<vector<int> > m = IsEmpty();
+  EXPECT_EQ("is empty", Describe(m));
+  EXPECT_EQ("isn't empty", DescribeNegation(m));
+}
+
+TEST(IsEmptyTest, ExplainsResult) {
+  Matcher<vector<int> > m = IsEmpty();
+  vector<int> container;
+  EXPECT_EQ("", Explain(m, container));
+  container.push_back(0);
+  EXPECT_EQ("whose size is 1", Explain(m, container));
+}
+
+TEST(IsEmptyTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(IsEmpty()));
+  helper.Call({});
+}
+
+TEST(IsTrueTest, IsTrueIsFalse) {
+  EXPECT_THAT(true, IsTrue());
+  EXPECT_THAT(false, IsFalse());
+  EXPECT_THAT(true, Not(IsFalse()));
+  EXPECT_THAT(false, Not(IsTrue()));
+  EXPECT_THAT(0, Not(IsTrue()));
+  EXPECT_THAT(0, IsFalse());
+  EXPECT_THAT(nullptr, Not(IsTrue()));
+  EXPECT_THAT(nullptr, IsFalse());
+  EXPECT_THAT(-1, IsTrue());
+  EXPECT_THAT(-1, Not(IsFalse()));
+  EXPECT_THAT(1, IsTrue());
+  EXPECT_THAT(1, Not(IsFalse()));
+  EXPECT_THAT(2, IsTrue());
+  EXPECT_THAT(2, Not(IsFalse()));
+  int a = 42;
+  EXPECT_THAT(a, IsTrue());
+  EXPECT_THAT(a, Not(IsFalse()));
+  EXPECT_THAT(&a, IsTrue());
+  EXPECT_THAT(&a, Not(IsFalse()));
+  EXPECT_THAT(false, Not(IsTrue()));
+  EXPECT_THAT(true, Not(IsFalse()));
+  EXPECT_THAT(std::true_type(), IsTrue());
+  EXPECT_THAT(std::true_type(), Not(IsFalse()));
+  EXPECT_THAT(std::false_type(), IsFalse());
+  EXPECT_THAT(std::false_type(), Not(IsTrue()));
+  EXPECT_THAT(nullptr, Not(IsTrue()));
+  EXPECT_THAT(nullptr, IsFalse());
+  std::unique_ptr<int> null_unique;
+  std::unique_ptr<int> nonnull_unique(new int(0));
+  EXPECT_THAT(null_unique, Not(IsTrue()));
+  EXPECT_THAT(null_unique, IsFalse());
+  EXPECT_THAT(nonnull_unique, IsTrue());
+  EXPECT_THAT(nonnull_unique, Not(IsFalse()));
+}
+
+TEST(SizeIsTest, ImplementsSizeIs) {
+  vector<int> container;
+  EXPECT_THAT(container, SizeIs(0));
+  EXPECT_THAT(container, Not(SizeIs(1)));
+  container.push_back(0);
+  EXPECT_THAT(container, Not(SizeIs(0)));
+  EXPECT_THAT(container, SizeIs(1));
+  container.push_back(0);
+  EXPECT_THAT(container, Not(SizeIs(0)));
+  EXPECT_THAT(container, SizeIs(2));
+}
+
+TEST(SizeIsTest, WorksWithMap) {
+  map<std::string, int> container;
+  EXPECT_THAT(container, SizeIs(0));
+  EXPECT_THAT(container, Not(SizeIs(1)));
+  container.insert(make_pair("foo", 1));
+  EXPECT_THAT(container, Not(SizeIs(0)));
+  EXPECT_THAT(container, SizeIs(1));
+  container.insert(make_pair("bar", 2));
+  EXPECT_THAT(container, Not(SizeIs(0)));
+  EXPECT_THAT(container, SizeIs(2));
+}
+
+TEST(SizeIsTest, WorksWithReferences) {
+  vector<int> container;
+  Matcher<const vector<int>&> m = SizeIs(1);
+  EXPECT_THAT(container, Not(m));
+  container.push_back(0);
+  EXPECT_THAT(container, m);
+}
+
+TEST(SizeIsTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(SizeIs(3)));
+  helper.Call(MakeUniquePtrs({1, 2, 3}));
+}
+
+// SizeIs should work for any type that provides a size() member function.
+// For example, a size_type member type should not need to be provided.
+struct MinimalistCustomType {
+  int size() const { return 1; }
+};
+TEST(SizeIsTest, WorksWithMinimalistCustomType) {
+  MinimalistCustomType container;
+  EXPECT_THAT(container, SizeIs(1));
+  EXPECT_THAT(container, Not(SizeIs(0)));
+}
+
+TEST(SizeIsTest, CanDescribeSelf) {
+  Matcher<vector<int> > m = SizeIs(2);
+  EXPECT_EQ("size is equal to 2", Describe(m));
+  EXPECT_EQ("size isn't equal to 2", DescribeNegation(m));
+}
+
+TEST(SizeIsTest, ExplainsResult) {
+  Matcher<vector<int> > m1 = SizeIs(2);
+  Matcher<vector<int> > m2 = SizeIs(Lt(2u));
+  Matcher<vector<int> > m3 = SizeIs(AnyOf(0, 3));
+  Matcher<vector<int> > m4 = SizeIs(GreaterThan(1));
+  vector<int> container;
+  EXPECT_EQ("whose size 0 doesn't match", Explain(m1, container));
+  EXPECT_EQ("whose size 0 matches", Explain(m2, container));
+  EXPECT_EQ("whose size 0 matches", Explain(m3, container));
+  EXPECT_EQ("whose size 0 doesn't match, which is 1 less than 1",
+            Explain(m4, container));
+  container.push_back(0);
+  container.push_back(0);
+  EXPECT_EQ("whose size 2 matches", Explain(m1, container));
+  EXPECT_EQ("whose size 2 doesn't match", Explain(m2, container));
+  EXPECT_EQ("whose size 2 doesn't match", Explain(m3, container));
+  EXPECT_EQ("whose size 2 matches, which is 1 more than 1",
+            Explain(m4, container));
+}
+
+#if GTEST_HAS_TYPED_TEST
+// Tests ContainerEq with different container types, and
+// different element types.
+
+template <typename T>
+class ContainerEqTest : public testing::Test {};
+
+typedef testing::Types<
+    set<int>,
+    vector<size_t>,
+    multiset<size_t>,
+    list<int> >
+    ContainerEqTestTypes;
+
+TYPED_TEST_SUITE(ContainerEqTest, ContainerEqTestTypes);
+
+// Tests that the filled container is equal to itself.
+TYPED_TEST(ContainerEqTest, EqualsSelf) {
+  static const int vals[] = {1, 1, 2, 3, 5, 8};
+  TypeParam my_set(vals, vals + 6);
+  const Matcher<TypeParam> m = ContainerEq(my_set);
+  EXPECT_TRUE(m.Matches(my_set));
+  EXPECT_EQ("", Explain(m, my_set));
+}
+
+// Tests that missing values are reported.
+TYPED_TEST(ContainerEqTest, ValueMissing) {
+  static const int vals[] = {1, 1, 2, 3, 5, 8};
+  static const int test_vals[] = {2, 1, 8, 5};
+  TypeParam my_set(vals, vals + 6);
+  TypeParam test_set(test_vals, test_vals + 4);
+  const Matcher<TypeParam> m = ContainerEq(my_set);
+  EXPECT_FALSE(m.Matches(test_set));
+  EXPECT_EQ("which doesn't have these expected elements: 3",
+            Explain(m, test_set));
+}
+
+// Tests that added values are reported.
+TYPED_TEST(ContainerEqTest, ValueAdded) {
+  static const int vals[] = {1, 1, 2, 3, 5, 8};
+  static const int test_vals[] = {1, 2, 3, 5, 8, 46};
+  TypeParam my_set(vals, vals + 6);
+  TypeParam test_set(test_vals, test_vals + 6);
+  const Matcher<const TypeParam&> m = ContainerEq(my_set);
+  EXPECT_FALSE(m.Matches(test_set));
+  EXPECT_EQ("which has these unexpected elements: 46", Explain(m, test_set));
+}
+
+// Tests that added and missing values are reported together.
+TYPED_TEST(ContainerEqTest, ValueAddedAndRemoved) {
+  static const int vals[] = {1, 1, 2, 3, 5, 8};
+  static const int test_vals[] = {1, 2, 3, 8, 46};
+  TypeParam my_set(vals, vals + 6);
+  TypeParam test_set(test_vals, test_vals + 5);
+  const Matcher<TypeParam> m = ContainerEq(my_set);
+  EXPECT_FALSE(m.Matches(test_set));
+  EXPECT_EQ("which has these unexpected elements: 46,\n"
+            "and doesn't have these expected elements: 5",
+            Explain(m, test_set));
+}
+
+// Tests duplicated value -- expect no explanation.
+TYPED_TEST(ContainerEqTest, DuplicateDifference) {
+  static const int vals[] = {1, 1, 2, 3, 5, 8};
+  static const int test_vals[] = {1, 2, 3, 5, 8};
+  TypeParam my_set(vals, vals + 6);
+  TypeParam test_set(test_vals, test_vals + 5);
+  const Matcher<const TypeParam&> m = ContainerEq(my_set);
+  // Depending on the container, match may be true or false
+  // But in any case there should be no explanation.
+  EXPECT_EQ("", Explain(m, test_set));
+}
+#endif  // GTEST_HAS_TYPED_TEST
+
+// Tests that multiple missing values are reported.
+// Using just vector here, so order is predictable.
+TEST(ContainerEqExtraTest, MultipleValuesMissing) {
+  static const int vals[] = {1, 1, 2, 3, 5, 8};
+  static const int test_vals[] = {2, 1, 5};
+  vector<int> my_set(vals, vals + 6);
+  vector<int> test_set(test_vals, test_vals + 3);
+  const Matcher<vector<int> > m = ContainerEq(my_set);
+  EXPECT_FALSE(m.Matches(test_set));
+  EXPECT_EQ("which doesn't have these expected elements: 3, 8",
+            Explain(m, test_set));
+}
+
+// Tests that added values are reported.
+// Using just vector here, so order is predictable.
+TEST(ContainerEqExtraTest, MultipleValuesAdded) {
+  static const int vals[] = {1, 1, 2, 3, 5, 8};
+  static const int test_vals[] = {1, 2, 92, 3, 5, 8, 46};
+  list<size_t> my_set(vals, vals + 6);
+  list<size_t> test_set(test_vals, test_vals + 7);
+  const Matcher<const list<size_t>&> m = ContainerEq(my_set);
+  EXPECT_FALSE(m.Matches(test_set));
+  EXPECT_EQ("which has these unexpected elements: 92, 46",
+            Explain(m, test_set));
+}
+
+// Tests that added and missing values are reported together.
+TEST(ContainerEqExtraTest, MultipleValuesAddedAndRemoved) {
+  static const int vals[] = {1, 1, 2, 3, 5, 8};
+  static const int test_vals[] = {1, 2, 3, 92, 46};
+  list<size_t> my_set(vals, vals + 6);
+  list<size_t> test_set(test_vals, test_vals + 5);
+  const Matcher<const list<size_t> > m = ContainerEq(my_set);
+  EXPECT_FALSE(m.Matches(test_set));
+  EXPECT_EQ("which has these unexpected elements: 92, 46,\n"
+            "and doesn't have these expected elements: 5, 8",
+            Explain(m, test_set));
+}
+
+// Tests to see that duplicate elements are detected,
+// but (as above) not reported in the explanation.
+TEST(ContainerEqExtraTest, MultiSetOfIntDuplicateDifference) {
+  static const int vals[] = {1, 1, 2, 3, 5, 8};
+  static const int test_vals[] = {1, 2, 3, 5, 8};
+  vector<int> my_set(vals, vals + 6);
+  vector<int> test_set(test_vals, test_vals + 5);
+  const Matcher<vector<int> > m = ContainerEq(my_set);
+  EXPECT_TRUE(m.Matches(my_set));
+  EXPECT_FALSE(m.Matches(test_set));
+  // There is nothing to report when both sets contain all the same values.
+  EXPECT_EQ("", Explain(m, test_set));
+}
+
+// Tests that ContainerEq works for non-trivial associative containers,
+// like maps.
+TEST(ContainerEqExtraTest, WorksForMaps) {
+  map<int, std::string> my_map;
+  my_map[0] = "a";
+  my_map[1] = "b";
+
+  map<int, std::string> test_map;
+  test_map[0] = "aa";
+  test_map[1] = "b";
+
+  const Matcher<const map<int, std::string>&> m = ContainerEq(my_map);
+  EXPECT_TRUE(m.Matches(my_map));
+  EXPECT_FALSE(m.Matches(test_map));
+
+  EXPECT_EQ("which has these unexpected elements: (0, \"aa\"),\n"
+            "and doesn't have these expected elements: (0, \"a\")",
+            Explain(m, test_map));
+}
+
+TEST(ContainerEqExtraTest, WorksForNativeArray) {
+  int a1[] = {1, 2, 3};
+  int a2[] = {1, 2, 3};
+  int b[] = {1, 2, 4};
+
+  EXPECT_THAT(a1, ContainerEq(a2));
+  EXPECT_THAT(a1, Not(ContainerEq(b)));
+}
+
+TEST(ContainerEqExtraTest, WorksForTwoDimensionalNativeArray) {
+  const char a1[][3] = {"hi", "lo"};
+  const char a2[][3] = {"hi", "lo"};
+  const char b[][3] = {"lo", "hi"};
+
+  // Tests using ContainerEq() in the first dimension.
+  EXPECT_THAT(a1, ContainerEq(a2));
+  EXPECT_THAT(a1, Not(ContainerEq(b)));
+
+  // Tests using ContainerEq() in the second dimension.
+  EXPECT_THAT(a1, ElementsAre(ContainerEq(a2[0]), ContainerEq(a2[1])));
+  EXPECT_THAT(a1, ElementsAre(Not(ContainerEq(b[0])), ContainerEq(a2[1])));
+}
+
+TEST(ContainerEqExtraTest, WorksForNativeArrayAsTuple) {
+  const int a1[] = {1, 2, 3};
+  const int a2[] = {1, 2, 3};
+  const int b[] = {1, 2, 3, 4};
+
+  const int* const p1 = a1;
+  EXPECT_THAT(std::make_tuple(p1, 3), ContainerEq(a2));
+  EXPECT_THAT(std::make_tuple(p1, 3), Not(ContainerEq(b)));
+
+  const int c[] = {1, 3, 2};
+  EXPECT_THAT(std::make_tuple(p1, 3), Not(ContainerEq(c)));
+}
+
+TEST(ContainerEqExtraTest, CopiesNativeArrayParameter) {
+  std::string a1[][3] = {
+    {"hi", "hello", "ciao"},
+    {"bye", "see you", "ciao"}
+  };
+
+  std::string a2[][3] = {
+    {"hi", "hello", "ciao"},
+    {"bye", "see you", "ciao"}
+  };
+
+  const Matcher<const std::string(&)[2][3]> m = ContainerEq(a2);
+  EXPECT_THAT(a1, m);
+
+  a2[0][0] = "ha";
+  EXPECT_THAT(a1, m);
+}
+
+TEST(WhenSortedByTest, WorksForEmptyContainer) {
+  const vector<int> numbers;
+  EXPECT_THAT(numbers, WhenSortedBy(less<int>(), ElementsAre()));
+  EXPECT_THAT(numbers, Not(WhenSortedBy(less<int>(), ElementsAre(1))));
+}
+
+TEST(WhenSortedByTest, WorksForNonEmptyContainer) {
+  vector<unsigned> numbers;
+  numbers.push_back(3);
+  numbers.push_back(1);
+  numbers.push_back(2);
+  numbers.push_back(2);
+  EXPECT_THAT(numbers, WhenSortedBy(greater<unsigned>(),
+                                    ElementsAre(3, 2, 2, 1)));
+  EXPECT_THAT(numbers, Not(WhenSortedBy(greater<unsigned>(),
+                                        ElementsAre(1, 2, 2, 3))));
+}
+
+TEST(WhenSortedByTest, WorksForNonVectorContainer) {
+  list<std::string> words;
+  words.push_back("say");
+  words.push_back("hello");
+  words.push_back("world");
+  EXPECT_THAT(words, WhenSortedBy(less<std::string>(),
+                                  ElementsAre("hello", "say", "world")));
+  EXPECT_THAT(words, Not(WhenSortedBy(less<std::string>(),
+                                      ElementsAre("say", "hello", "world"))));
+}
+
+TEST(WhenSortedByTest, WorksForNativeArray) {
+  const int numbers[] = {1, 3, 2, 4};
+  const int sorted_numbers[] = {1, 2, 3, 4};
+  EXPECT_THAT(numbers, WhenSortedBy(less<int>(), ElementsAre(1, 2, 3, 4)));
+  EXPECT_THAT(numbers, WhenSortedBy(less<int>(),
+                                    ElementsAreArray(sorted_numbers)));
+  EXPECT_THAT(numbers, Not(WhenSortedBy(less<int>(), ElementsAre(1, 3, 2, 4))));
+}
+
+TEST(WhenSortedByTest, CanDescribeSelf) {
+  const Matcher<vector<int> > m = WhenSortedBy(less<int>(), ElementsAre(1, 2));
+  EXPECT_EQ("(when sorted) has 2 elements where\n"
+            "element #0 is equal to 1,\n"
+            "element #1 is equal to 2",
+            Describe(m));
+  EXPECT_EQ("(when sorted) doesn't have 2 elements, or\n"
+            "element #0 isn't equal to 1, or\n"
+            "element #1 isn't equal to 2",
+            DescribeNegation(m));
+}
+
+TEST(WhenSortedByTest, ExplainsMatchResult) {
+  const int a[] = {2, 1};
+  EXPECT_EQ("which is { 1, 2 } when sorted, whose element #0 doesn't match",
+            Explain(WhenSortedBy(less<int>(), ElementsAre(2, 3)), a));
+  EXPECT_EQ("which is { 1, 2 } when sorted",
+            Explain(WhenSortedBy(less<int>(), ElementsAre(1, 2)), a));
+}
+
+// WhenSorted() is a simple wrapper on WhenSortedBy().  Hence we don't
+// need to test it as exhaustively as we test the latter.
+
+TEST(WhenSortedTest, WorksForEmptyContainer) {
+  const vector<int> numbers;
+  EXPECT_THAT(numbers, WhenSorted(ElementsAre()));
+  EXPECT_THAT(numbers, Not(WhenSorted(ElementsAre(1))));
+}
+
+TEST(WhenSortedTest, WorksForNonEmptyContainer) {
+  list<std::string> words;
+  words.push_back("3");
+  words.push_back("1");
+  words.push_back("2");
+  words.push_back("2");
+  EXPECT_THAT(words, WhenSorted(ElementsAre("1", "2", "2", "3")));
+  EXPECT_THAT(words, Not(WhenSorted(ElementsAre("3", "1", "2", "2"))));
+}
+
+TEST(WhenSortedTest, WorksForMapTypes) {
+  map<std::string, int> word_counts;
+  word_counts["and"] = 1;
+  word_counts["the"] = 1;
+  word_counts["buffalo"] = 2;
+  EXPECT_THAT(word_counts,
+              WhenSorted(ElementsAre(Pair("and", 1), Pair("buffalo", 2),
+                                     Pair("the", 1))));
+  EXPECT_THAT(word_counts,
+              Not(WhenSorted(ElementsAre(Pair("and", 1), Pair("the", 1),
+                                         Pair("buffalo", 2)))));
+}
+
+TEST(WhenSortedTest, WorksForMultiMapTypes) {
+    multimap<int, int> ifib;
+    ifib.insert(make_pair(8, 6));
+    ifib.insert(make_pair(2, 3));
+    ifib.insert(make_pair(1, 1));
+    ifib.insert(make_pair(3, 4));
+    ifib.insert(make_pair(1, 2));
+    ifib.insert(make_pair(5, 5));
+    EXPECT_THAT(ifib, WhenSorted(ElementsAre(Pair(1, 1),
+                                             Pair(1, 2),
+                                             Pair(2, 3),
+                                             Pair(3, 4),
+                                             Pair(5, 5),
+                                             Pair(8, 6))));
+    EXPECT_THAT(ifib, Not(WhenSorted(ElementsAre(Pair(8, 6),
+                                                 Pair(2, 3),
+                                                 Pair(1, 1),
+                                                 Pair(3, 4),
+                                                 Pair(1, 2),
+                                                 Pair(5, 5)))));
+}
+
+TEST(WhenSortedTest, WorksForPolymorphicMatcher) {
+    std::deque<int> d;
+    d.push_back(2);
+    d.push_back(1);
+    EXPECT_THAT(d, WhenSorted(ElementsAre(1, 2)));
+    EXPECT_THAT(d, Not(WhenSorted(ElementsAre(2, 1))));
+}
+
+TEST(WhenSortedTest, WorksForVectorConstRefMatcher) {
+    std::deque<int> d;
+    d.push_back(2);
+    d.push_back(1);
+    Matcher<const std::vector<int>&> vector_match = ElementsAre(1, 2);
+    EXPECT_THAT(d, WhenSorted(vector_match));
+    Matcher<const std::vector<int>&> not_vector_match = ElementsAre(2, 1);
+    EXPECT_THAT(d, Not(WhenSorted(not_vector_match)));
+}
+
+// Deliberately bare pseudo-container.
+// Offers only begin() and end() accessors, yielding InputIterator.
+template <typename T>
+class Streamlike {
+ private:
+  class ConstIter;
+ public:
+  typedef ConstIter const_iterator;
+  typedef T value_type;
+
+  template <typename InIter>
+  Streamlike(InIter first, InIter last) : remainder_(first, last) {}
+
+  const_iterator begin() const {
+    return const_iterator(this, remainder_.begin());
+  }
+  const_iterator end() const {
+    return const_iterator(this, remainder_.end());
+  }
+
+ private:
+  class ConstIter : public std::iterator<std::input_iterator_tag,
+                                         value_type,
+                                         ptrdiff_t,
+                                         const value_type*,
+                                         const value_type&> {
+   public:
+    ConstIter(const Streamlike* s,
+              typename std::list<value_type>::iterator pos)
+        : s_(s), pos_(pos) {}
+
+    const value_type& operator*() const { return *pos_; }
+    const value_type* operator->() const { return &*pos_; }
+    ConstIter& operator++() {
+      s_->remainder_.erase(pos_++);
+      return *this;
+    }
+
+    // *iter++ is required to work (see std::istreambuf_iterator).
+    // (void)iter++ is also required to work.
+    class PostIncrProxy {
+     public:
+      explicit PostIncrProxy(const value_type& value) : value_(value) {}
+      value_type operator*() const { return value_; }
+     private:
+      value_type value_;
+    };
+    PostIncrProxy operator++(int) {
+      PostIncrProxy proxy(**this);
+      ++(*this);
+      return proxy;
+    }
+
+    friend bool operator==(const ConstIter& a, const ConstIter& b) {
+      return a.s_ == b.s_ && a.pos_ == b.pos_;
+    }
+    friend bool operator!=(const ConstIter& a, const ConstIter& b) {
+      return !(a == b);
+    }
+
+   private:
+    const Streamlike* s_;
+    typename std::list<value_type>::iterator pos_;
+  };
+
+  friend std::ostream& operator<<(std::ostream& os, const Streamlike& s) {
+    os << "[";
+    typedef typename std::list<value_type>::const_iterator Iter;
+    const char* sep = "";
+    for (Iter it = s.remainder_.begin(); it != s.remainder_.end(); ++it) {
+      os << sep << *it;
+      sep = ",";
+    }
+    os << "]";
+    return os;
+  }
+
+  mutable std::list<value_type> remainder_;  // modified by iteration
+};
+
+TEST(StreamlikeTest, Iteration) {
+  const int a[5] = {2, 1, 4, 5, 3};
+  Streamlike<int> s(a, a + 5);
+  Streamlike<int>::const_iterator it = s.begin();
+  const int* ip = a;
+  while (it != s.end()) {
+    SCOPED_TRACE(ip - a);
+    EXPECT_EQ(*ip++, *it++);
+  }
+}
+
+TEST(BeginEndDistanceIsTest, WorksWithForwardList) {
+  std::forward_list<int> container;
+  EXPECT_THAT(container, BeginEndDistanceIs(0));
+  EXPECT_THAT(container, Not(BeginEndDistanceIs(1)));
+  container.push_front(0);
+  EXPECT_THAT(container, Not(BeginEndDistanceIs(0)));
+  EXPECT_THAT(container, BeginEndDistanceIs(1));
+  container.push_front(0);
+  EXPECT_THAT(container, Not(BeginEndDistanceIs(0)));
+  EXPECT_THAT(container, BeginEndDistanceIs(2));
+}
+
+TEST(BeginEndDistanceIsTest, WorksWithNonStdList) {
+  const int a[5] = {1, 2, 3, 4, 5};
+  Streamlike<int> s(a, a + 5);
+  EXPECT_THAT(s, BeginEndDistanceIs(5));
+}
+
+TEST(BeginEndDistanceIsTest, CanDescribeSelf) {
+  Matcher<vector<int> > m = BeginEndDistanceIs(2);
+  EXPECT_EQ("distance between begin() and end() is equal to 2", Describe(m));
+  EXPECT_EQ("distance between begin() and end() isn't equal to 2",
+            DescribeNegation(m));
+}
+
+TEST(BeginEndDistanceIsTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(BeginEndDistanceIs(2)));
+  helper.Call(MakeUniquePtrs({1, 2}));
+}
+
+TEST(BeginEndDistanceIsTest, ExplainsResult) {
+  Matcher<vector<int> > m1 = BeginEndDistanceIs(2);
+  Matcher<vector<int> > m2 = BeginEndDistanceIs(Lt(2));
+  Matcher<vector<int> > m3 = BeginEndDistanceIs(AnyOf(0, 3));
+  Matcher<vector<int> > m4 = BeginEndDistanceIs(GreaterThan(1));
+  vector<int> container;
+  EXPECT_EQ("whose distance between begin() and end() 0 doesn't match",
+            Explain(m1, container));
+  EXPECT_EQ("whose distance between begin() and end() 0 matches",
+            Explain(m2, container));
+  EXPECT_EQ("whose distance between begin() and end() 0 matches",
+            Explain(m3, container));
+  EXPECT_EQ(
+      "whose distance between begin() and end() 0 doesn't match, which is 1 "
+      "less than 1",
+      Explain(m4, container));
+  container.push_back(0);
+  container.push_back(0);
+  EXPECT_EQ("whose distance between begin() and end() 2 matches",
+            Explain(m1, container));
+  EXPECT_EQ("whose distance between begin() and end() 2 doesn't match",
+            Explain(m2, container));
+  EXPECT_EQ("whose distance between begin() and end() 2 doesn't match",
+            Explain(m3, container));
+  EXPECT_EQ(
+      "whose distance between begin() and end() 2 matches, which is 1 more "
+      "than 1",
+      Explain(m4, container));
+}
+
+TEST(WhenSortedTest, WorksForStreamlike) {
+  // Streamlike 'container' provides only minimal iterator support.
+  // Its iterators are tagged with input_iterator_tag.
+  const int a[5] = {2, 1, 4, 5, 3};
+  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  EXPECT_THAT(s, WhenSorted(ElementsAre(1, 2, 3, 4, 5)));
+  EXPECT_THAT(s, Not(WhenSorted(ElementsAre(2, 1, 4, 5, 3))));
+}
+
+TEST(WhenSortedTest, WorksForVectorConstRefMatcherOnStreamlike) {
+  const int a[] = {2, 1, 4, 5, 3};
+  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  Matcher<const std::vector<int>&> vector_match = ElementsAre(1, 2, 3, 4, 5);
+  EXPECT_THAT(s, WhenSorted(vector_match));
+  EXPECT_THAT(s, Not(WhenSorted(ElementsAre(2, 1, 4, 5, 3))));
+}
+
+TEST(IsSupersetOfTest, WorksForNativeArray) {
+  const int subset[] = {1, 4};
+  const int superset[] = {1, 2, 4};
+  const int disjoint[] = {1, 0, 3};
+  EXPECT_THAT(subset, IsSupersetOf(subset));
+  EXPECT_THAT(subset, Not(IsSupersetOf(superset)));
+  EXPECT_THAT(superset, IsSupersetOf(subset));
+  EXPECT_THAT(subset, Not(IsSupersetOf(disjoint)));
+  EXPECT_THAT(disjoint, Not(IsSupersetOf(subset)));
+}
+
+TEST(IsSupersetOfTest, WorksWithDuplicates) {
+  const int not_enough[] = {1, 2};
+  const int enough[] = {1, 1, 2};
+  const int expected[] = {1, 1};
+  EXPECT_THAT(not_enough, Not(IsSupersetOf(expected)));
+  EXPECT_THAT(enough, IsSupersetOf(expected));
+}
+
+TEST(IsSupersetOfTest, WorksForEmpty) {
+  vector<int> numbers;
+  vector<int> expected;
+  EXPECT_THAT(numbers, IsSupersetOf(expected));
+  expected.push_back(1);
+  EXPECT_THAT(numbers, Not(IsSupersetOf(expected)));
+  expected.clear();
+  numbers.push_back(1);
+  numbers.push_back(2);
+  EXPECT_THAT(numbers, IsSupersetOf(expected));
+  expected.push_back(1);
+  EXPECT_THAT(numbers, IsSupersetOf(expected));
+  expected.push_back(2);
+  EXPECT_THAT(numbers, IsSupersetOf(expected));
+  expected.push_back(3);
+  EXPECT_THAT(numbers, Not(IsSupersetOf(expected)));
+}
+
+TEST(IsSupersetOfTest, WorksForStreamlike) {
+  const int a[5] = {1, 2, 3, 4, 5};
+  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+
+  vector<int> expected;
+  expected.push_back(1);
+  expected.push_back(2);
+  expected.push_back(5);
+  EXPECT_THAT(s, IsSupersetOf(expected));
+
+  expected.push_back(0);
+  EXPECT_THAT(s, Not(IsSupersetOf(expected)));
+}
+
+TEST(IsSupersetOfTest, TakesStlContainer) {
+  const int actual[] = {3, 1, 2};
+
+  ::std::list<int> expected;
+  expected.push_back(1);
+  expected.push_back(3);
+  EXPECT_THAT(actual, IsSupersetOf(expected));
+
+  expected.push_back(4);
+  EXPECT_THAT(actual, Not(IsSupersetOf(expected)));
+}
+
+TEST(IsSupersetOfTest, Describe) {
+  typedef std::vector<int> IntVec;
+  IntVec expected;
+  expected.push_back(111);
+  expected.push_back(222);
+  expected.push_back(333);
+  EXPECT_THAT(
+      Describe<IntVec>(IsSupersetOf(expected)),
+      Eq("a surjection from elements to requirements exists such that:\n"
+         " - an element is equal to 111\n"
+         " - an element is equal to 222\n"
+         " - an element is equal to 333"));
+}
+
+TEST(IsSupersetOfTest, DescribeNegation) {
+  typedef std::vector<int> IntVec;
+  IntVec expected;
+  expected.push_back(111);
+  expected.push_back(222);
+  expected.push_back(333);
+  EXPECT_THAT(
+      DescribeNegation<IntVec>(IsSupersetOf(expected)),
+      Eq("no surjection from elements to requirements exists such that:\n"
+         " - an element is equal to 111\n"
+         " - an element is equal to 222\n"
+         " - an element is equal to 333"));
+}
+
+TEST(IsSupersetOfTest, MatchAndExplain) {
+  std::vector<int> v;
+  v.push_back(2);
+  v.push_back(3);
+  std::vector<int> expected;
+  expected.push_back(1);
+  expected.push_back(2);
+  StringMatchResultListener listener;
+  ASSERT_FALSE(ExplainMatchResult(IsSupersetOf(expected), v, &listener))
+      << listener.str();
+  EXPECT_THAT(listener.str(),
+              Eq("where the following matchers don't match any elements:\n"
+                 "matcher #0: is equal to 1"));
+
+  v.push_back(1);
+  listener.Clear();
+  ASSERT_TRUE(ExplainMatchResult(IsSupersetOf(expected), v, &listener))
+      << listener.str();
+  EXPECT_THAT(listener.str(), Eq("where:\n"
+                                 " - element #0 is matched by matcher #1,\n"
+                                 " - element #2 is matched by matcher #0"));
+}
+
+TEST(IsSupersetOfTest, WorksForRhsInitializerList) {
+  const int numbers[] = {1, 3, 6, 2, 4, 5};
+  EXPECT_THAT(numbers, IsSupersetOf({1, 2}));
+  EXPECT_THAT(numbers, Not(IsSupersetOf({3, 0})));
+}
+
+TEST(IsSupersetOfTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(IsSupersetOf({Pointee(1)})));
+  helper.Call(MakeUniquePtrs({1, 2}));
+  EXPECT_CALL(helper, Call(Not(IsSupersetOf({Pointee(1), Pointee(2)}))));
+  helper.Call(MakeUniquePtrs({2}));
+}
+
+TEST(IsSubsetOfTest, WorksForNativeArray) {
+  const int subset[] = {1, 4};
+  const int superset[] = {1, 2, 4};
+  const int disjoint[] = {1, 0, 3};
+  EXPECT_THAT(subset, IsSubsetOf(subset));
+  EXPECT_THAT(subset, IsSubsetOf(superset));
+  EXPECT_THAT(superset, Not(IsSubsetOf(subset)));
+  EXPECT_THAT(subset, Not(IsSubsetOf(disjoint)));
+  EXPECT_THAT(disjoint, Not(IsSubsetOf(subset)));
+}
+
+TEST(IsSubsetOfTest, WorksWithDuplicates) {
+  const int not_enough[] = {1, 2};
+  const int enough[] = {1, 1, 2};
+  const int actual[] = {1, 1};
+  EXPECT_THAT(actual, Not(IsSubsetOf(not_enough)));
+  EXPECT_THAT(actual, IsSubsetOf(enough));
+}
+
+TEST(IsSubsetOfTest, WorksForEmpty) {
+  vector<int> numbers;
+  vector<int> expected;
+  EXPECT_THAT(numbers, IsSubsetOf(expected));
+  expected.push_back(1);
+  EXPECT_THAT(numbers, IsSubsetOf(expected));
+  expected.clear();
+  numbers.push_back(1);
+  numbers.push_back(2);
+  EXPECT_THAT(numbers, Not(IsSubsetOf(expected)));
+  expected.push_back(1);
+  EXPECT_THAT(numbers, Not(IsSubsetOf(expected)));
+  expected.push_back(2);
+  EXPECT_THAT(numbers, IsSubsetOf(expected));
+  expected.push_back(3);
+  EXPECT_THAT(numbers, IsSubsetOf(expected));
+}
+
+TEST(IsSubsetOfTest, WorksForStreamlike) {
+  const int a[5] = {1, 2};
+  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+
+  vector<int> expected;
+  expected.push_back(1);
+  EXPECT_THAT(s, Not(IsSubsetOf(expected)));
+  expected.push_back(2);
+  expected.push_back(5);
+  EXPECT_THAT(s, IsSubsetOf(expected));
+}
+
+TEST(IsSubsetOfTest, TakesStlContainer) {
+  const int actual[] = {3, 1, 2};
+
+  ::std::list<int> expected;
+  expected.push_back(1);
+  expected.push_back(3);
+  EXPECT_THAT(actual, Not(IsSubsetOf(expected)));
+
+  expected.push_back(2);
+  expected.push_back(4);
+  EXPECT_THAT(actual, IsSubsetOf(expected));
+}
+
+TEST(IsSubsetOfTest, Describe) {
+  typedef std::vector<int> IntVec;
+  IntVec expected;
+  expected.push_back(111);
+  expected.push_back(222);
+  expected.push_back(333);
+
+  EXPECT_THAT(
+      Describe<IntVec>(IsSubsetOf(expected)),
+      Eq("an injection from elements to requirements exists such that:\n"
+         " - an element is equal to 111\n"
+         " - an element is equal to 222\n"
+         " - an element is equal to 333"));
+}
+
+TEST(IsSubsetOfTest, DescribeNegation) {
+  typedef std::vector<int> IntVec;
+  IntVec expected;
+  expected.push_back(111);
+  expected.push_back(222);
+  expected.push_back(333);
+  EXPECT_THAT(
+      DescribeNegation<IntVec>(IsSubsetOf(expected)),
+      Eq("no injection from elements to requirements exists such that:\n"
+         " - an element is equal to 111\n"
+         " - an element is equal to 222\n"
+         " - an element is equal to 333"));
+}
+
+TEST(IsSubsetOfTest, MatchAndExplain) {
+  std::vector<int> v;
+  v.push_back(2);
+  v.push_back(3);
+  std::vector<int> expected;
+  expected.push_back(1);
+  expected.push_back(2);
+  StringMatchResultListener listener;
+  ASSERT_FALSE(ExplainMatchResult(IsSubsetOf(expected), v, &listener))
+      << listener.str();
+  EXPECT_THAT(listener.str(),
+              Eq("where the following elements don't match any matchers:\n"
+                 "element #1: 3"));
+
+  expected.push_back(3);
+  listener.Clear();
+  ASSERT_TRUE(ExplainMatchResult(IsSubsetOf(expected), v, &listener))
+      << listener.str();
+  EXPECT_THAT(listener.str(), Eq("where:\n"
+                                 " - element #0 is matched by matcher #1,\n"
+                                 " - element #1 is matched by matcher #2"));
+}
+
+TEST(IsSubsetOfTest, WorksForRhsInitializerList) {
+  const int numbers[] = {1, 2, 3};
+  EXPECT_THAT(numbers, IsSubsetOf({1, 2, 3, 4}));
+  EXPECT_THAT(numbers, Not(IsSubsetOf({1, 2})));
+}
+
+TEST(IsSubsetOfTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(IsSubsetOf({Pointee(1), Pointee(2)})));
+  helper.Call(MakeUniquePtrs({1}));
+  EXPECT_CALL(helper, Call(Not(IsSubsetOf({Pointee(1)}))));
+  helper.Call(MakeUniquePtrs({2}));
+}
+
+// Tests using ElementsAre() and ElementsAreArray() with stream-like
+// "containers".
+
+TEST(ElemensAreStreamTest, WorksForStreamlike) {
+  const int a[5] = {1, 2, 3, 4, 5};
+  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  EXPECT_THAT(s, ElementsAre(1, 2, 3, 4, 5));
+  EXPECT_THAT(s, Not(ElementsAre(2, 1, 4, 5, 3)));
+}
+
+TEST(ElemensAreArrayStreamTest, WorksForStreamlike) {
+  const int a[5] = {1, 2, 3, 4, 5};
+  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+
+  vector<int> expected;
+  expected.push_back(1);
+  expected.push_back(2);
+  expected.push_back(3);
+  expected.push_back(4);
+  expected.push_back(5);
+  EXPECT_THAT(s, ElementsAreArray(expected));
+
+  expected[3] = 0;
+  EXPECT_THAT(s, Not(ElementsAreArray(expected)));
+}
+
+TEST(ElementsAreTest, WorksWithUncopyable) {
+  Uncopyable objs[2];
+  objs[0].set_value(-3);
+  objs[1].set_value(1);
+  EXPECT_THAT(objs, ElementsAre(UncopyableIs(-3), Truly(ValueIsPositive)));
+}
+
+TEST(ElementsAreTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(ElementsAre(Pointee(1), Pointee(2))));
+  helper.Call(MakeUniquePtrs({1, 2}));
+
+  EXPECT_CALL(helper, Call(ElementsAreArray({Pointee(3), Pointee(4)})));
+  helper.Call(MakeUniquePtrs({3, 4}));
+}
+
+TEST(ElementsAreTest, TakesStlContainer) {
+  const int actual[] = {3, 1, 2};
+
+  ::std::list<int> expected;
+  expected.push_back(3);
+  expected.push_back(1);
+  expected.push_back(2);
+  EXPECT_THAT(actual, ElementsAreArray(expected));
+
+  expected.push_back(4);
+  EXPECT_THAT(actual, Not(ElementsAreArray(expected)));
+}
+
+// Tests for UnorderedElementsAreArray()
+
+TEST(UnorderedElementsAreArrayTest, SucceedsWhenExpected) {
+  const int a[] = {0, 1, 2, 3, 4};
+  std::vector<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  do {
+    StringMatchResultListener listener;
+    EXPECT_TRUE(ExplainMatchResult(UnorderedElementsAreArray(a),
+                                   s, &listener)) << listener.str();
+  } while (std::next_permutation(s.begin(), s.end()));
+}
+
+TEST(UnorderedElementsAreArrayTest, VectorBool) {
+  const bool a[] = {0, 1, 0, 1, 1};
+  const bool b[] = {1, 0, 1, 1, 0};
+  std::vector<bool> expected(a, a + GTEST_ARRAY_SIZE_(a));
+  std::vector<bool> actual(b, b + GTEST_ARRAY_SIZE_(b));
+  StringMatchResultListener listener;
+  EXPECT_TRUE(ExplainMatchResult(UnorderedElementsAreArray(expected),
+                                 actual, &listener)) << listener.str();
+}
+
+TEST(UnorderedElementsAreArrayTest, WorksForStreamlike) {
+  // Streamlike 'container' provides only minimal iterator support.
+  // Its iterators are tagged with input_iterator_tag, and it has no
+  // size() or empty() methods.
+  const int a[5] = {2, 1, 4, 5, 3};
+  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+
+  ::std::vector<int> expected;
+  expected.push_back(1);
+  expected.push_back(2);
+  expected.push_back(3);
+  expected.push_back(4);
+  expected.push_back(5);
+  EXPECT_THAT(s, UnorderedElementsAreArray(expected));
+
+  expected.push_back(6);
+  EXPECT_THAT(s, Not(UnorderedElementsAreArray(expected)));
+}
+
+TEST(UnorderedElementsAreArrayTest, TakesStlContainer) {
+  const int actual[] = {3, 1, 2};
+
+  ::std::list<int> expected;
+  expected.push_back(1);
+  expected.push_back(2);
+  expected.push_back(3);
+  EXPECT_THAT(actual, UnorderedElementsAreArray(expected));
+
+  expected.push_back(4);
+  EXPECT_THAT(actual, Not(UnorderedElementsAreArray(expected)));
+}
+
+
+TEST(UnorderedElementsAreArrayTest, TakesInitializerList) {
+  const int a[5] = {2, 1, 4, 5, 3};
+  EXPECT_THAT(a, UnorderedElementsAreArray({1, 2, 3, 4, 5}));
+  EXPECT_THAT(a, Not(UnorderedElementsAreArray({1, 2, 3, 4, 6})));
+}
+
+TEST(UnorderedElementsAreArrayTest, TakesInitializerListOfCStrings) {
+  const std::string a[5] = {"a", "b", "c", "d", "e"};
+  EXPECT_THAT(a, UnorderedElementsAreArray({"a", "b", "c", "d", "e"}));
+  EXPECT_THAT(a, Not(UnorderedElementsAreArray({"a", "b", "c", "d", "ef"})));
+}
+
+TEST(UnorderedElementsAreArrayTest, TakesInitializerListOfSameTypedMatchers) {
+  const int a[5] = {2, 1, 4, 5, 3};
+  EXPECT_THAT(a, UnorderedElementsAreArray(
+      {Eq(1), Eq(2), Eq(3), Eq(4), Eq(5)}));
+  EXPECT_THAT(a, Not(UnorderedElementsAreArray(
+      {Eq(1), Eq(2), Eq(3), Eq(4), Eq(6)})));
+}
+
+TEST(UnorderedElementsAreArrayTest,
+     TakesInitializerListOfDifferentTypedMatchers) {
+  const int a[5] = {2, 1, 4, 5, 3};
+  // The compiler cannot infer the type of the initializer list if its
+  // elements have different types.  We must explicitly specify the
+  // unified element type in this case.
+  EXPECT_THAT(a, UnorderedElementsAreArray<Matcher<int> >(
+      {Eq(1), Ne(-2), Ge(3), Le(4), Eq(5)}));
+  EXPECT_THAT(a, Not(UnorderedElementsAreArray<Matcher<int> >(
+      {Eq(1), Ne(-2), Ge(3), Le(4), Eq(6)})));
+}
+
+
+TEST(UnorderedElementsAreArrayTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper,
+              Call(UnorderedElementsAreArray({Pointee(1), Pointee(2)})));
+  helper.Call(MakeUniquePtrs({2, 1}));
+}
+
+class UnorderedElementsAreTest : public testing::Test {
+ protected:
+  typedef std::vector<int> IntVec;
+};
+
+TEST_F(UnorderedElementsAreTest, WorksWithUncopyable) {
+  Uncopyable objs[2];
+  objs[0].set_value(-3);
+  objs[1].set_value(1);
+  EXPECT_THAT(objs,
+              UnorderedElementsAre(Truly(ValueIsPositive), UncopyableIs(-3)));
+}
+
+TEST_F(UnorderedElementsAreTest, SucceedsWhenExpected) {
+  const int a[] = {1, 2, 3};
+  std::vector<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  do {
+    StringMatchResultListener listener;
+    EXPECT_TRUE(ExplainMatchResult(UnorderedElementsAre(1, 2, 3),
+                                   s, &listener)) << listener.str();
+  } while (std::next_permutation(s.begin(), s.end()));
+}
+
+TEST_F(UnorderedElementsAreTest, FailsWhenAnElementMatchesNoMatcher) {
+  const int a[] = {1, 2, 3};
+  std::vector<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+  std::vector<Matcher<int> > mv;
+  mv.push_back(1);
+  mv.push_back(2);
+  mv.push_back(2);
+  // The element with value '3' matches nothing: fail fast.
+  StringMatchResultListener listener;
+  EXPECT_FALSE(ExplainMatchResult(UnorderedElementsAreArray(mv),
+                                  s, &listener)) << listener.str();
+}
+
+TEST_F(UnorderedElementsAreTest, WorksForStreamlike) {
+  // Streamlike 'container' provides only minimal iterator support.
+  // Its iterators are tagged with input_iterator_tag, and it has no
+  // size() or empty() methods.
+  const int a[5] = {2, 1, 4, 5, 3};
+  Streamlike<int> s(a, a + GTEST_ARRAY_SIZE_(a));
+
+  EXPECT_THAT(s, UnorderedElementsAre(1, 2, 3, 4, 5));
+  EXPECT_THAT(s, Not(UnorderedElementsAre(2, 2, 3, 4, 5)));
+}
+
+TEST_F(UnorderedElementsAreTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(UnorderedElementsAre(Pointee(1), Pointee(2))));
+  helper.Call(MakeUniquePtrs({2, 1}));
+}
+
+// One naive implementation of the matcher runs in O(N!) time, which is too
+// slow for many real-world inputs. This test shows that our matcher can match
+// 100 inputs very quickly (a few milliseconds).  An O(100!) is 10^158
+// iterations and obviously effectively incomputable.
+// [ RUN      ] UnorderedElementsAreTest.Performance
+// [       OK ] UnorderedElementsAreTest.Performance (4 ms)
+TEST_F(UnorderedElementsAreTest, Performance) {
+  std::vector<int> s;
+  std::vector<Matcher<int> > mv;
+  for (int i = 0; i < 100; ++i) {
+    s.push_back(i);
+    mv.push_back(_);
+  }
+  mv[50] = Eq(0);
+  StringMatchResultListener listener;
+  EXPECT_TRUE(ExplainMatchResult(UnorderedElementsAreArray(mv),
+                                 s, &listener)) << listener.str();
+}
+
+// Another variant of 'Performance' with similar expectations.
+// [ RUN      ] UnorderedElementsAreTest.PerformanceHalfStrict
+// [       OK ] UnorderedElementsAreTest.PerformanceHalfStrict (4 ms)
+TEST_F(UnorderedElementsAreTest, PerformanceHalfStrict) {
+  std::vector<int> s;
+  std::vector<Matcher<int> > mv;
+  for (int i = 0; i < 100; ++i) {
+    s.push_back(i);
+    if (i & 1) {
+      mv.push_back(_);
+    } else {
+      mv.push_back(i);
+    }
+  }
+  StringMatchResultListener listener;
+  EXPECT_TRUE(ExplainMatchResult(UnorderedElementsAreArray(mv),
+                                 s, &listener)) << listener.str();
+}
+
+TEST_F(UnorderedElementsAreTest, FailMessageCountWrong) {
+  std::vector<int> v;
+  v.push_back(4);
+  StringMatchResultListener listener;
+  EXPECT_FALSE(ExplainMatchResult(UnorderedElementsAre(1, 2, 3),
+                                  v, &listener)) << listener.str();
+  EXPECT_THAT(listener.str(), Eq("which has 1 element"));
+}
+
+TEST_F(UnorderedElementsAreTest, FailMessageCountWrongZero) {
+  std::vector<int> v;
+  StringMatchResultListener listener;
+  EXPECT_FALSE(ExplainMatchResult(UnorderedElementsAre(1, 2, 3),
+                                  v, &listener)) << listener.str();
+  EXPECT_THAT(listener.str(), Eq(""));
+}
+
+TEST_F(UnorderedElementsAreTest, FailMessageUnmatchedMatchers) {
+  std::vector<int> v;
+  v.push_back(1);
+  v.push_back(1);
+  StringMatchResultListener listener;
+  EXPECT_FALSE(ExplainMatchResult(UnorderedElementsAre(1, 2),
+                                  v, &listener)) << listener.str();
+  EXPECT_THAT(
+      listener.str(),
+      Eq("where the following matchers don't match any elements:\n"
+         "matcher #1: is equal to 2"));
+}
+
+TEST_F(UnorderedElementsAreTest, FailMessageUnmatchedElements) {
+  std::vector<int> v;
+  v.push_back(1);
+  v.push_back(2);
+  StringMatchResultListener listener;
+  EXPECT_FALSE(ExplainMatchResult(UnorderedElementsAre(1, 1),
+                                  v, &listener)) << listener.str();
+  EXPECT_THAT(
+      listener.str(),
+      Eq("where the following elements don't match any matchers:\n"
+         "element #1: 2"));
+}
+
+TEST_F(UnorderedElementsAreTest, FailMessageUnmatchedMatcherAndElement) {
+  std::vector<int> v;
+  v.push_back(2);
+  v.push_back(3);
+  StringMatchResultListener listener;
+  EXPECT_FALSE(ExplainMatchResult(UnorderedElementsAre(1, 2),
+                                  v, &listener)) << listener.str();
+  EXPECT_THAT(
+      listener.str(),
+      Eq("where"
+         " the following matchers don't match any elements:\n"
+         "matcher #0: is equal to 1\n"
+         "and"
+         " where"
+         " the following elements don't match any matchers:\n"
+         "element #1: 3"));
+}
+
+// Test helper for formatting element, matcher index pairs in expectations.
+static std::string EMString(int element, int matcher) {
+  stringstream ss;
+  ss << "(element #" << element << ", matcher #" << matcher << ")";
+  return ss.str();
+}
+
+TEST_F(UnorderedElementsAreTest, FailMessageImperfectMatchOnly) {
+  // A situation where all elements and matchers have a match
+  // associated with them, but the max matching is not perfect.
+  std::vector<std::string> v;
+  v.push_back("a");
+  v.push_back("b");
+  v.push_back("c");
+  StringMatchResultListener listener;
+  EXPECT_FALSE(ExplainMatchResult(
+      UnorderedElementsAre("a", "a", AnyOf("b", "c")), v, &listener))
+      << listener.str();
+
+  std::string prefix =
+      "where no permutation of the elements can satisfy all matchers, "
+      "and the closest match is 2 of 3 matchers with the "
+      "pairings:\n";
+
+  // We have to be a bit loose here, because there are 4 valid max matches.
+  EXPECT_THAT(
+      listener.str(),
+      AnyOf(prefix + "{\n  " + EMString(0, 0) +
+                     ",\n  " + EMString(1, 2) + "\n}",
+            prefix + "{\n  " + EMString(0, 1) +
+                     ",\n  " + EMString(1, 2) + "\n}",
+            prefix + "{\n  " + EMString(0, 0) +
+                     ",\n  " + EMString(2, 2) + "\n}",
+            prefix + "{\n  " + EMString(0, 1) +
+                     ",\n  " + EMString(2, 2) + "\n}"));
+}
+
+TEST_F(UnorderedElementsAreTest, Describe) {
+  EXPECT_THAT(Describe<IntVec>(UnorderedElementsAre()),
+              Eq("is empty"));
+  EXPECT_THAT(
+      Describe<IntVec>(UnorderedElementsAre(345)),
+      Eq("has 1 element and that element is equal to 345"));
+  EXPECT_THAT(
+      Describe<IntVec>(UnorderedElementsAre(111, 222, 333)),
+      Eq("has 3 elements and there exists some permutation "
+         "of elements such that:\n"
+         " - element #0 is equal to 111, and\n"
+         " - element #1 is equal to 222, and\n"
+         " - element #2 is equal to 333"));
+}
+
+TEST_F(UnorderedElementsAreTest, DescribeNegation) {
+  EXPECT_THAT(DescribeNegation<IntVec>(UnorderedElementsAre()),
+              Eq("isn't empty"));
+  EXPECT_THAT(
+      DescribeNegation<IntVec>(UnorderedElementsAre(345)),
+      Eq("doesn't have 1 element, or has 1 element that isn't equal to 345"));
+  EXPECT_THAT(
+      DescribeNegation<IntVec>(UnorderedElementsAre(123, 234, 345)),
+      Eq("doesn't have 3 elements, or there exists no permutation "
+         "of elements such that:\n"
+         " - element #0 is equal to 123, and\n"
+         " - element #1 is equal to 234, and\n"
+         " - element #2 is equal to 345"));
+}
+
+namespace {
+
+// Used as a check on the more complex max flow method used in the
+// real testing::internal::FindMaxBipartiteMatching. This method is
+// compatible but runs in worst-case factorial time, so we only
+// use it in testing for small problem sizes.
+template <typename Graph>
+class BacktrackingMaxBPMState {
+ public:
+  // Does not take ownership of 'g'.
+  explicit BacktrackingMaxBPMState(const Graph* g) : graph_(g) { }
+
+  ElementMatcherPairs Compute() {
+    if (graph_->LhsSize() == 0 || graph_->RhsSize() == 0) {
+      return best_so_far_;
+    }
+    lhs_used_.assign(graph_->LhsSize(), kUnused);
+    rhs_used_.assign(graph_->RhsSize(), kUnused);
+    for (size_t irhs = 0; irhs < graph_->RhsSize(); ++irhs) {
+      matches_.clear();
+      RecurseInto(irhs);
+      if (best_so_far_.size() == graph_->RhsSize())
+        break;
+    }
+    return best_so_far_;
+  }
+
+ private:
+  static const size_t kUnused = static_cast<size_t>(-1);
+
+  void PushMatch(size_t lhs, size_t rhs) {
+    matches_.push_back(ElementMatcherPair(lhs, rhs));
+    lhs_used_[lhs] = rhs;
+    rhs_used_[rhs] = lhs;
+    if (matches_.size() > best_so_far_.size()) {
+      best_so_far_ = matches_;
+    }
+  }
+
+  void PopMatch() {
+    const ElementMatcherPair& back = matches_.back();
+    lhs_used_[back.first] = kUnused;
+    rhs_used_[back.second] = kUnused;
+    matches_.pop_back();
+  }
+
+  bool RecurseInto(size_t irhs) {
+    if (rhs_used_[irhs] != kUnused) {
+      return true;
+    }
+    for (size_t ilhs = 0; ilhs < graph_->LhsSize(); ++ilhs) {
+      if (lhs_used_[ilhs] != kUnused) {
+        continue;
+      }
+      if (!graph_->HasEdge(ilhs, irhs)) {
+        continue;
+      }
+      PushMatch(ilhs, irhs);
+      if (best_so_far_.size() == graph_->RhsSize()) {
+        return false;
+      }
+      for (size_t mi = irhs + 1; mi < graph_->RhsSize(); ++mi) {
+        if (!RecurseInto(mi)) return false;
+      }
+      PopMatch();
+    }
+    return true;
+  }
+
+  const Graph* graph_;  // not owned
+  std::vector<size_t> lhs_used_;
+  std::vector<size_t> rhs_used_;
+  ElementMatcherPairs matches_;
+  ElementMatcherPairs best_so_far_;
+};
+
+template <typename Graph>
+const size_t BacktrackingMaxBPMState<Graph>::kUnused;
+
+}  // namespace
+
+// Implement a simple backtracking algorithm to determine if it is possible
+// to find one element per matcher, without reusing elements.
+template <typename Graph>
+ElementMatcherPairs
+FindBacktrackingMaxBPM(const Graph& g) {
+  return BacktrackingMaxBPMState<Graph>(&g).Compute();
+}
+
+class BacktrackingBPMTest : public ::testing::Test { };
+
+// Tests the MaxBipartiteMatching algorithm with square matrices.
+// The single int param is the # of nodes on each of the left and right sides.
+class BipartiteTest : public ::testing::TestWithParam<size_t> {};
+
+// Verify all match graphs up to some moderate number of edges.
+TEST_P(BipartiteTest, Exhaustive) {
+  size_t nodes = GetParam();
+  MatchMatrix graph(nodes, nodes);
+  do {
+    ElementMatcherPairs matches =
+        internal::FindMaxBipartiteMatching(graph);
+    EXPECT_EQ(FindBacktrackingMaxBPM(graph).size(), matches.size())
+        << "graph: " << graph.DebugString();
+    // Check that all elements of matches are in the graph.
+    // Check that elements of first and second are unique.
+    std::vector<bool> seen_element(graph.LhsSize());
+    std::vector<bool> seen_matcher(graph.RhsSize());
+    SCOPED_TRACE(PrintToString(matches));
+    for (size_t i = 0; i < matches.size(); ++i) {
+      size_t ilhs = matches[i].first;
+      size_t irhs = matches[i].second;
+      EXPECT_TRUE(graph.HasEdge(ilhs, irhs));
+      EXPECT_FALSE(seen_element[ilhs]);
+      EXPECT_FALSE(seen_matcher[irhs]);
+      seen_element[ilhs] = true;
+      seen_matcher[irhs] = true;
+    }
+  } while (graph.NextGraph());
+}
+
+INSTANTIATE_TEST_SUITE_P(AllGraphs, BipartiteTest,
+                         ::testing::Range(size_t{0}, size_t{5}));
+
+// Parameterized by a pair interpreted as (LhsSize, RhsSize).
+class BipartiteNonSquareTest
+    : public ::testing::TestWithParam<std::pair<size_t, size_t> > {
+};
+
+TEST_F(BipartiteNonSquareTest, SimpleBacktracking) {
+  //   .......
+  // 0:-----\ :
+  // 1:---\ | :
+  // 2:---\ | :
+  // 3:-\ | | :
+  //  :.......:
+  //    0 1 2
+  MatchMatrix g(4, 3);
+  static const size_t kEdges[][2] = {{0, 2}, {1, 1}, {2, 1}, {3, 0}};
+  for (size_t i = 0; i < GTEST_ARRAY_SIZE_(kEdges); ++i) {
+    g.SetEdge(kEdges[i][0], kEdges[i][1], true);
+  }
+  EXPECT_THAT(FindBacktrackingMaxBPM(g),
+              ElementsAre(Pair(3, 0),
+                          Pair(AnyOf(1, 2), 1),
+                          Pair(0, 2))) << g.DebugString();
+}
+
+// Verify a few nonsquare matrices.
+TEST_P(BipartiteNonSquareTest, Exhaustive) {
+  size_t nlhs = GetParam().first;
+  size_t nrhs = GetParam().second;
+  MatchMatrix graph(nlhs, nrhs);
+  do {
+    EXPECT_EQ(FindBacktrackingMaxBPM(graph).size(),
+              internal::FindMaxBipartiteMatching(graph).size())
+        << "graph: " << graph.DebugString()
+        << "\nbacktracking: "
+        << PrintToString(FindBacktrackingMaxBPM(graph))
+        << "\nmax flow: "
+        << PrintToString(internal::FindMaxBipartiteMatching(graph));
+  } while (graph.NextGraph());
+}
+
+INSTANTIATE_TEST_SUITE_P(AllGraphs, BipartiteNonSquareTest,
+    testing::Values(
+        std::make_pair(1, 2),
+        std::make_pair(2, 1),
+        std::make_pair(3, 2),
+        std::make_pair(2, 3),
+        std::make_pair(4, 1),
+        std::make_pair(1, 4),
+        std::make_pair(4, 3),
+        std::make_pair(3, 4)));
+
+class BipartiteRandomTest
+    : public ::testing::TestWithParam<std::pair<int, int> > {
+};
+
+// Verifies a large sample of larger graphs.
+TEST_P(BipartiteRandomTest, LargerNets) {
+  int nodes = GetParam().first;
+  int iters = GetParam().second;
+  MatchMatrix graph(static_cast<size_t>(nodes), static_cast<size_t>(nodes));
+
+  auto seed = static_cast<testing::internal::UInt32>(GTEST_FLAG(random_seed));
+  if (seed == 0) {
+    seed = static_cast<testing::internal::UInt32>(time(nullptr));
+  }
+
+  for (; iters > 0; --iters, ++seed) {
+    srand(static_cast<unsigned int>(seed));
+    graph.Randomize();
+    EXPECT_EQ(FindBacktrackingMaxBPM(graph).size(),
+              internal::FindMaxBipartiteMatching(graph).size())
+        << " graph: " << graph.DebugString()
+        << "\nTo reproduce the failure, rerun the test with the flag"
+           " --" << GTEST_FLAG_PREFIX_ << "random_seed=" << seed;
+  }
+}
+
+// Test argument is a std::pair<int, int> representing (nodes, iters).
+INSTANTIATE_TEST_SUITE_P(Samples, BipartiteRandomTest,
+    testing::Values(
+        std::make_pair(5, 10000),
+        std::make_pair(6, 5000),
+        std::make_pair(7, 2000),
+        std::make_pair(8, 500),
+        std::make_pair(9, 100)));
+
+// Tests IsReadableTypeName().
+
+TEST(IsReadableTypeNameTest, ReturnsTrueForShortNames) {
+  EXPECT_TRUE(IsReadableTypeName("int"));
+  EXPECT_TRUE(IsReadableTypeName("const unsigned char*"));
+  EXPECT_TRUE(IsReadableTypeName("MyMap<int, void*>"));
+  EXPECT_TRUE(IsReadableTypeName("void (*)(int, bool)"));
+}
+
+TEST(IsReadableTypeNameTest, ReturnsTrueForLongNonTemplateNonFunctionNames) {
+  EXPECT_TRUE(IsReadableTypeName("my_long_namespace::MyClassName"));
+  EXPECT_TRUE(IsReadableTypeName("int [5][6][7][8][9][10][11]"));
+  EXPECT_TRUE(IsReadableTypeName("my_namespace::MyOuterClass::MyInnerClass"));
+}
+
+TEST(IsReadableTypeNameTest, ReturnsFalseForLongTemplateNames) {
+  EXPECT_FALSE(
+      IsReadableTypeName("basic_string<char, std::char_traits<char> >"));
+  EXPECT_FALSE(IsReadableTypeName("std::vector<int, std::alloc_traits<int> >"));
+}
+
+TEST(IsReadableTypeNameTest, ReturnsFalseForLongFunctionTypeNames) {
+  EXPECT_FALSE(IsReadableTypeName("void (&)(int, bool, char, float)"));
+}
+
+// Tests FormatMatcherDescription().
+
+TEST(FormatMatcherDescriptionTest, WorksForEmptyDescription) {
+  EXPECT_EQ("is even",
+            FormatMatcherDescription(false, "IsEven", Strings()));
+  EXPECT_EQ("not (is even)",
+            FormatMatcherDescription(true, "IsEven", Strings()));
+
+  const char* params[] = {"5"};
+  EXPECT_EQ("equals 5",
+            FormatMatcherDescription(false, "Equals",
+                                     Strings(params, params + 1)));
+
+  const char* params2[] = {"5", "8"};
+  EXPECT_EQ("is in range (5, 8)",
+            FormatMatcherDescription(false, "IsInRange",
+                                     Strings(params2, params2 + 2)));
+}
+
+// Tests PolymorphicMatcher::mutable_impl().
+TEST(PolymorphicMatcherTest, CanAccessMutableImpl) {
+  PolymorphicMatcher<DivisibleByImpl> m(DivisibleByImpl(42));
+  DivisibleByImpl& impl = m.mutable_impl();
+  EXPECT_EQ(42, impl.divider());
+
+  impl.set_divider(0);
+  EXPECT_EQ(0, m.mutable_impl().divider());
+}
+
+// Tests PolymorphicMatcher::impl().
+TEST(PolymorphicMatcherTest, CanAccessImpl) {
+  const PolymorphicMatcher<DivisibleByImpl> m(DivisibleByImpl(42));
+  const DivisibleByImpl& impl = m.impl();
+  EXPECT_EQ(42, impl.divider());
+}
+
+TEST(MatcherTupleTest, ExplainsMatchFailure) {
+  stringstream ss1;
+  ExplainMatchFailureTupleTo(
+      std::make_tuple(Matcher<char>(Eq('a')), GreaterThan(5)),
+      std::make_tuple('a', 10), &ss1);
+  EXPECT_EQ("", ss1.str());  // Successful match.
+
+  stringstream ss2;
+  ExplainMatchFailureTupleTo(
+      std::make_tuple(GreaterThan(5), Matcher<char>(Eq('a'))),
+      std::make_tuple(2, 'b'), &ss2);
+  EXPECT_EQ("  Expected arg #0: is > 5\n"
+            "           Actual: 2, which is 3 less than 5\n"
+            "  Expected arg #1: is equal to 'a' (97, 0x61)\n"
+            "           Actual: 'b' (98, 0x62)\n",
+            ss2.str());  // Failed match where both arguments need explanation.
+
+  stringstream ss3;
+  ExplainMatchFailureTupleTo(
+      std::make_tuple(GreaterThan(5), Matcher<char>(Eq('a'))),
+      std::make_tuple(2, 'a'), &ss3);
+  EXPECT_EQ("  Expected arg #0: is > 5\n"
+            "           Actual: 2, which is 3 less than 5\n",
+            ss3.str());  // Failed match where only one argument needs
+                         // explanation.
+}
+
+// Tests Each().
+
+TEST(EachTest, ExplainsMatchResultCorrectly) {
+  set<int> a;  // empty
+
+  Matcher<set<int> > m = Each(2);
+  EXPECT_EQ("", Explain(m, a));
+
+  Matcher<const int(&)[1]> n = Each(1);  // NOLINT
+
+  const int b[1] = {1};
+  EXPECT_EQ("", Explain(n, b));
+
+  n = Each(3);
+  EXPECT_EQ("whose element #0 doesn't match", Explain(n, b));
+
+  a.insert(1);
+  a.insert(2);
+  a.insert(3);
+  m = Each(GreaterThan(0));
+  EXPECT_EQ("", Explain(m, a));
+
+  m = Each(GreaterThan(10));
+  EXPECT_EQ("whose element #0 doesn't match, which is 9 less than 10",
+            Explain(m, a));
+}
+
+TEST(EachTest, DescribesItselfCorrectly) {
+  Matcher<vector<int> > m = Each(1);
+  EXPECT_EQ("only contains elements that is equal to 1", Describe(m));
+
+  Matcher<vector<int> > m2 = Not(m);
+  EXPECT_EQ("contains some element that isn't equal to 1", Describe(m2));
+}
+
+TEST(EachTest, MatchesVectorWhenAllElementsMatch) {
+  vector<int> some_vector;
+  EXPECT_THAT(some_vector, Each(1));
+  some_vector.push_back(3);
+  EXPECT_THAT(some_vector, Not(Each(1)));
+  EXPECT_THAT(some_vector, Each(3));
+  some_vector.push_back(1);
+  some_vector.push_back(2);
+  EXPECT_THAT(some_vector, Not(Each(3)));
+  EXPECT_THAT(some_vector, Each(Lt(3.5)));
+
+  vector<std::string> another_vector;
+  another_vector.push_back("fee");
+  EXPECT_THAT(another_vector, Each(std::string("fee")));
+  another_vector.push_back("fie");
+  another_vector.push_back("foe");
+  another_vector.push_back("fum");
+  EXPECT_THAT(another_vector, Not(Each(std::string("fee"))));
+}
+
+TEST(EachTest, MatchesMapWhenAllElementsMatch) {
+  map<const char*, int> my_map;
+  const char* bar = "a string";
+  my_map[bar] = 2;
+  EXPECT_THAT(my_map, Each(make_pair(bar, 2)));
+
+  map<std::string, int> another_map;
+  EXPECT_THAT(another_map, Each(make_pair(std::string("fee"), 1)));
+  another_map["fee"] = 1;
+  EXPECT_THAT(another_map, Each(make_pair(std::string("fee"), 1)));
+  another_map["fie"] = 2;
+  another_map["foe"] = 3;
+  another_map["fum"] = 4;
+  EXPECT_THAT(another_map, Not(Each(make_pair(std::string("fee"), 1))));
+  EXPECT_THAT(another_map, Not(Each(make_pair(std::string("fum"), 1))));
+  EXPECT_THAT(another_map, Each(Pair(_, Gt(0))));
+}
+
+TEST(EachTest, AcceptsMatcher) {
+  const int a[] = {1, 2, 3};
+  EXPECT_THAT(a, Each(Gt(0)));
+  EXPECT_THAT(a, Not(Each(Gt(1))));
+}
+
+TEST(EachTest, WorksForNativeArrayAsTuple) {
+  const int a[] = {1, 2};
+  const int* const pointer = a;
+  EXPECT_THAT(std::make_tuple(pointer, 2), Each(Gt(0)));
+  EXPECT_THAT(std::make_tuple(pointer, 2), Not(Each(Gt(1))));
+}
+
+TEST(EachTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(Each(Pointee(Gt(0)))));
+  helper.Call(MakeUniquePtrs({1, 2}));
+}
+
+// For testing Pointwise().
+class IsHalfOfMatcher {
+ public:
+  template <typename T1, typename T2>
+  bool MatchAndExplain(const std::tuple<T1, T2>& a_pair,
+                       MatchResultListener* listener) const {
+    if (std::get<0>(a_pair) == std::get<1>(a_pair) / 2) {
+      *listener << "where the second is " << std::get<1>(a_pair);
+      return true;
+    } else {
+      *listener << "where the second/2 is " << std::get<1>(a_pair) / 2;
+      return false;
+    }
+  }
+
+  void DescribeTo(ostream* os) const {
+    *os << "are a pair where the first is half of the second";
+  }
+
+  void DescribeNegationTo(ostream* os) const {
+    *os << "are a pair where the first isn't half of the second";
+  }
+};
+
+PolymorphicMatcher<IsHalfOfMatcher> IsHalfOf() {
+  return MakePolymorphicMatcher(IsHalfOfMatcher());
+}
+
+TEST(PointwiseTest, DescribesSelf) {
+  vector<int> rhs;
+  rhs.push_back(1);
+  rhs.push_back(2);
+  rhs.push_back(3);
+  const Matcher<const vector<int>&> m = Pointwise(IsHalfOf(), rhs);
+  EXPECT_EQ("contains 3 values, where each value and its corresponding value "
+            "in { 1, 2, 3 } are a pair where the first is half of the second",
+            Describe(m));
+  EXPECT_EQ("doesn't contain exactly 3 values, or contains a value x at some "
+            "index i where x and the i-th value of { 1, 2, 3 } are a pair "
+            "where the first isn't half of the second",
+            DescribeNegation(m));
+}
+
+TEST(PointwiseTest, MakesCopyOfRhs) {
+  list<signed char> rhs;
+  rhs.push_back(2);
+  rhs.push_back(4);
+
+  int lhs[] = {1, 2};
+  const Matcher<const int (&)[2]> m = Pointwise(IsHalfOf(), rhs);
+  EXPECT_THAT(lhs, m);
+
+  // Changing rhs now shouldn't affect m, which made a copy of rhs.
+  rhs.push_back(6);
+  EXPECT_THAT(lhs, m);
+}
+
+TEST(PointwiseTest, WorksForLhsNativeArray) {
+  const int lhs[] = {1, 2, 3};
+  vector<int> rhs;
+  rhs.push_back(2);
+  rhs.push_back(4);
+  rhs.push_back(6);
+  EXPECT_THAT(lhs, Pointwise(Lt(), rhs));
+  EXPECT_THAT(lhs, Not(Pointwise(Gt(), rhs)));
+}
+
+TEST(PointwiseTest, WorksForRhsNativeArray) {
+  const int rhs[] = {1, 2, 3};
+  vector<int> lhs;
+  lhs.push_back(2);
+  lhs.push_back(4);
+  lhs.push_back(6);
+  EXPECT_THAT(lhs, Pointwise(Gt(), rhs));
+  EXPECT_THAT(lhs, Not(Pointwise(Lt(), rhs)));
+}
+
+// Test is effective only with sanitizers.
+TEST(PointwiseTest, WorksForVectorOfBool) {
+  vector<bool> rhs(3, false);
+  rhs[1] = true;
+  vector<bool> lhs = rhs;
+  EXPECT_THAT(lhs, Pointwise(Eq(), rhs));
+  rhs[0] = true;
+  EXPECT_THAT(lhs, Not(Pointwise(Eq(), rhs)));
+}
+
+
+TEST(PointwiseTest, WorksForRhsInitializerList) {
+  const vector<int> lhs{2, 4, 6};
+  EXPECT_THAT(lhs, Pointwise(Gt(), {1, 2, 3}));
+  EXPECT_THAT(lhs, Not(Pointwise(Lt(), {3, 3, 7})));
+}
+
+
+TEST(PointwiseTest, RejectsWrongSize) {
+  const double lhs[2] = {1, 2};
+  const int rhs[1] = {0};
+  EXPECT_THAT(lhs, Not(Pointwise(Gt(), rhs)));
+  EXPECT_EQ("which contains 2 values",
+            Explain(Pointwise(Gt(), rhs), lhs));
+
+  const int rhs2[3] = {0, 1, 2};
+  EXPECT_THAT(lhs, Not(Pointwise(Gt(), rhs2)));
+}
+
+TEST(PointwiseTest, RejectsWrongContent) {
+  const double lhs[3] = {1, 2, 3};
+  const int rhs[3] = {2, 6, 4};
+  EXPECT_THAT(lhs, Not(Pointwise(IsHalfOf(), rhs)));
+  EXPECT_EQ("where the value pair (2, 6) at index #1 don't match, "
+            "where the second/2 is 3",
+            Explain(Pointwise(IsHalfOf(), rhs), lhs));
+}
+
+TEST(PointwiseTest, AcceptsCorrectContent) {
+  const double lhs[3] = {1, 2, 3};
+  const int rhs[3] = {2, 4, 6};
+  EXPECT_THAT(lhs, Pointwise(IsHalfOf(), rhs));
+  EXPECT_EQ("", Explain(Pointwise(IsHalfOf(), rhs), lhs));
+}
+
+TEST(PointwiseTest, AllowsMonomorphicInnerMatcher) {
+  const double lhs[3] = {1, 2, 3};
+  const int rhs[3] = {2, 4, 6};
+  const Matcher<std::tuple<const double&, const int&>> m1 = IsHalfOf();
+  EXPECT_THAT(lhs, Pointwise(m1, rhs));
+  EXPECT_EQ("", Explain(Pointwise(m1, rhs), lhs));
+
+  // This type works as a std::tuple<const double&, const int&> can be
+  // implicitly cast to std::tuple<double, int>.
+  const Matcher<std::tuple<double, int>> m2 = IsHalfOf();
+  EXPECT_THAT(lhs, Pointwise(m2, rhs));
+  EXPECT_EQ("", Explain(Pointwise(m2, rhs), lhs));
+}
+
+MATCHER(PointeeEquals, "Points to an equal value") {
+  return ExplainMatchResult(::testing::Pointee(::testing::get<1>(arg)),
+                            ::testing::get<0>(arg), result_listener);
+}
+
+TEST(PointwiseTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(Pointwise(PointeeEquals(), std::vector<int>{1, 2})));
+  helper.Call(MakeUniquePtrs({1, 2}));
+}
+
+TEST(UnorderedPointwiseTest, DescribesSelf) {
+  vector<int> rhs;
+  rhs.push_back(1);
+  rhs.push_back(2);
+  rhs.push_back(3);
+  const Matcher<const vector<int>&> m = UnorderedPointwise(IsHalfOf(), rhs);
+  EXPECT_EQ(
+      "has 3 elements and there exists some permutation of elements such "
+      "that:\n"
+      " - element #0 and 1 are a pair where the first is half of the second, "
+      "and\n"
+      " - element #1 and 2 are a pair where the first is half of the second, "
+      "and\n"
+      " - element #2 and 3 are a pair where the first is half of the second",
+      Describe(m));
+  EXPECT_EQ(
+      "doesn't have 3 elements, or there exists no permutation of elements "
+      "such that:\n"
+      " - element #0 and 1 are a pair where the first is half of the second, "
+      "and\n"
+      " - element #1 and 2 are a pair where the first is half of the second, "
+      "and\n"
+      " - element #2 and 3 are a pair where the first is half of the second",
+      DescribeNegation(m));
+}
+
+TEST(UnorderedPointwiseTest, MakesCopyOfRhs) {
+  list<signed char> rhs;
+  rhs.push_back(2);
+  rhs.push_back(4);
+
+  int lhs[] = {2, 1};
+  const Matcher<const int (&)[2]> m = UnorderedPointwise(IsHalfOf(), rhs);
+  EXPECT_THAT(lhs, m);
+
+  // Changing rhs now shouldn't affect m, which made a copy of rhs.
+  rhs.push_back(6);
+  EXPECT_THAT(lhs, m);
+}
+
+TEST(UnorderedPointwiseTest, WorksForLhsNativeArray) {
+  const int lhs[] = {1, 2, 3};
+  vector<int> rhs;
+  rhs.push_back(4);
+  rhs.push_back(6);
+  rhs.push_back(2);
+  EXPECT_THAT(lhs, UnorderedPointwise(Lt(), rhs));
+  EXPECT_THAT(lhs, Not(UnorderedPointwise(Gt(), rhs)));
+}
+
+TEST(UnorderedPointwiseTest, WorksForRhsNativeArray) {
+  const int rhs[] = {1, 2, 3};
+  vector<int> lhs;
+  lhs.push_back(4);
+  lhs.push_back(2);
+  lhs.push_back(6);
+  EXPECT_THAT(lhs, UnorderedPointwise(Gt(), rhs));
+  EXPECT_THAT(lhs, Not(UnorderedPointwise(Lt(), rhs)));
+}
+
+
+TEST(UnorderedPointwiseTest, WorksForRhsInitializerList) {
+  const vector<int> lhs{2, 4, 6};
+  EXPECT_THAT(lhs, UnorderedPointwise(Gt(), {5, 1, 3}));
+  EXPECT_THAT(lhs, Not(UnorderedPointwise(Lt(), {1, 1, 7})));
+}
+
+
+TEST(UnorderedPointwiseTest, RejectsWrongSize) {
+  const double lhs[2] = {1, 2};
+  const int rhs[1] = {0};
+  EXPECT_THAT(lhs, Not(UnorderedPointwise(Gt(), rhs)));
+  EXPECT_EQ("which has 2 elements",
+            Explain(UnorderedPointwise(Gt(), rhs), lhs));
+
+  const int rhs2[3] = {0, 1, 2};
+  EXPECT_THAT(lhs, Not(UnorderedPointwise(Gt(), rhs2)));
+}
+
+TEST(UnorderedPointwiseTest, RejectsWrongContent) {
+  const double lhs[3] = {1, 2, 3};
+  const int rhs[3] = {2, 6, 6};
+  EXPECT_THAT(lhs, Not(UnorderedPointwise(IsHalfOf(), rhs)));
+  EXPECT_EQ("where the following elements don't match any matchers:\n"
+            "element #1: 2",
+            Explain(UnorderedPointwise(IsHalfOf(), rhs), lhs));
+}
+
+TEST(UnorderedPointwiseTest, AcceptsCorrectContentInSameOrder) {
+  const double lhs[3] = {1, 2, 3};
+  const int rhs[3] = {2, 4, 6};
+  EXPECT_THAT(lhs, UnorderedPointwise(IsHalfOf(), rhs));
+}
+
+TEST(UnorderedPointwiseTest, AcceptsCorrectContentInDifferentOrder) {
+  const double lhs[3] = {1, 2, 3};
+  const int rhs[3] = {6, 4, 2};
+  EXPECT_THAT(lhs, UnorderedPointwise(IsHalfOf(), rhs));
+}
+
+TEST(UnorderedPointwiseTest, AllowsMonomorphicInnerMatcher) {
+  const double lhs[3] = {1, 2, 3};
+  const int rhs[3] = {4, 6, 2};
+  const Matcher<std::tuple<const double&, const int&>> m1 = IsHalfOf();
+  EXPECT_THAT(lhs, UnorderedPointwise(m1, rhs));
+
+  // This type works as a std::tuple<const double&, const int&> can be
+  // implicitly cast to std::tuple<double, int>.
+  const Matcher<std::tuple<double, int>> m2 = IsHalfOf();
+  EXPECT_THAT(lhs, UnorderedPointwise(m2, rhs));
+}
+
+TEST(UnorderedPointwiseTest, WorksWithMoveOnly) {
+  ContainerHelper helper;
+  EXPECT_CALL(helper, Call(UnorderedPointwise(PointeeEquals(),
+                                              std::vector<int>{1, 2})));
+  helper.Call(MakeUniquePtrs({2, 1}));
+}
+
+// Sample optional type implementation with minimal requirements for use with
+// Optional matcher.
+template <typename T>
+class SampleOptional {
+ public:
+  using value_type = T;
+  explicit SampleOptional(T value)
+      : value_(std::move(value)), has_value_(true) {}
+  SampleOptional() : value_(), has_value_(false) {}
+  operator bool() const { return has_value_; }
+  const T& operator*() const { return value_; }
+
+ private:
+  T value_;
+  bool has_value_;
+};
+
+TEST(OptionalTest, DescribesSelf) {
+  const Matcher<SampleOptional<int>> m = Optional(Eq(1));
+  EXPECT_EQ("value is equal to 1", Describe(m));
+}
+
+TEST(OptionalTest, ExplainsSelf) {
+  const Matcher<SampleOptional<int>> m = Optional(Eq(1));
+  EXPECT_EQ("whose value 1 matches", Explain(m, SampleOptional<int>(1)));
+  EXPECT_EQ("whose value 2 doesn't match", Explain(m, SampleOptional<int>(2)));
+}
+
+TEST(OptionalTest, MatchesNonEmptyOptional) {
+  const Matcher<SampleOptional<int>> m1 = Optional(1);
+  const Matcher<SampleOptional<int>> m2 = Optional(Eq(2));
+  const Matcher<SampleOptional<int>> m3 = Optional(Lt(3));
+  SampleOptional<int> opt(1);
+  EXPECT_TRUE(m1.Matches(opt));
+  EXPECT_FALSE(m2.Matches(opt));
+  EXPECT_TRUE(m3.Matches(opt));
+}
+
+TEST(OptionalTest, DoesNotMatchNullopt) {
+  const Matcher<SampleOptional<int>> m = Optional(1);
+  SampleOptional<int> empty;
+  EXPECT_FALSE(m.Matches(empty));
+}
+
+TEST(OptionalTest, WorksWithMoveOnly) {
+  Matcher<SampleOptional<std::unique_ptr<int>>> m = Optional(Eq(nullptr));
+  EXPECT_TRUE(m.Matches(SampleOptional<std::unique_ptr<int>>(nullptr)));
+}
+
+class SampleVariantIntString {
+ public:
+  SampleVariantIntString(int i) : i_(i), has_int_(true) {}
+  SampleVariantIntString(const std::string& s) : s_(s), has_int_(false) {}
+
+  template <typename T>
+  friend bool holds_alternative(const SampleVariantIntString& value) {
+    return value.has_int_ == std::is_same<T, int>::value;
+  }
+
+  template <typename T>
+  friend const T& get(const SampleVariantIntString& value) {
+    return value.get_impl(static_cast<T*>(nullptr));
+  }
+
+ private:
+  const int& get_impl(int*) const { return i_; }
+  const std::string& get_impl(std::string*) const { return s_; }
+
+  int i_;
+  std::string s_;
+  bool has_int_;
+};
+
+TEST(VariantTest, DescribesSelf) {
+  const Matcher<SampleVariantIntString> m = VariantWith<int>(Eq(1));
+  EXPECT_THAT(Describe(m), ContainsRegex("is a variant<> with value of type "
+                                         "'.*' and the value is equal to 1"));
+}
+
+TEST(VariantTest, ExplainsSelf) {
+  const Matcher<SampleVariantIntString> m = VariantWith<int>(Eq(1));
+  EXPECT_THAT(Explain(m, SampleVariantIntString(1)),
+              ContainsRegex("whose value 1"));
+  EXPECT_THAT(Explain(m, SampleVariantIntString("A")),
+              HasSubstr("whose value is not of type '"));
+  EXPECT_THAT(Explain(m, SampleVariantIntString(2)),
+              "whose value 2 doesn't match");
+}
+
+TEST(VariantTest, FullMatch) {
+  Matcher<SampleVariantIntString> m = VariantWith<int>(Eq(1));
+  EXPECT_TRUE(m.Matches(SampleVariantIntString(1)));
+
+  m = VariantWith<std::string>(Eq("1"));
+  EXPECT_TRUE(m.Matches(SampleVariantIntString("1")));
+}
+
+TEST(VariantTest, TypeDoesNotMatch) {
+  Matcher<SampleVariantIntString> m = VariantWith<int>(Eq(1));
+  EXPECT_FALSE(m.Matches(SampleVariantIntString("1")));
+
+  m = VariantWith<std::string>(Eq("1"));
+  EXPECT_FALSE(m.Matches(SampleVariantIntString(1)));
+}
+
+TEST(VariantTest, InnerDoesNotMatch) {
+  Matcher<SampleVariantIntString> m = VariantWith<int>(Eq(1));
+  EXPECT_FALSE(m.Matches(SampleVariantIntString(2)));
+
+  m = VariantWith<std::string>(Eq("1"));
+  EXPECT_FALSE(m.Matches(SampleVariantIntString("2")));
+}
+
+class SampleAnyType {
+ public:
+  explicit SampleAnyType(int i) : index_(0), i_(i) {}
+  explicit SampleAnyType(const std::string& s) : index_(1), s_(s) {}
+
+  template <typename T>
+  friend const T* any_cast(const SampleAnyType* any) {
+    return any->get_impl(static_cast<T*>(nullptr));
+  }
+
+ private:
+  int index_;
+  int i_;
+  std::string s_;
+
+  const int* get_impl(int*) const { return index_ == 0 ? &i_ : nullptr; }
+  const std::string* get_impl(std::string*) const {
+    return index_ == 1 ? &s_ : nullptr;
+  }
+};
+
+TEST(AnyWithTest, FullMatch) {
+  Matcher<SampleAnyType> m = AnyWith<int>(Eq(1));
+  EXPECT_TRUE(m.Matches(SampleAnyType(1)));
+}
+
+TEST(AnyWithTest, TestBadCastType) {
+  Matcher<SampleAnyType> m = AnyWith<std::string>(Eq("fail"));
+  EXPECT_FALSE(m.Matches(SampleAnyType(1)));
+}
+
+TEST(AnyWithTest, TestUseInContainers) {
+  std::vector<SampleAnyType> a;
+  a.emplace_back(1);
+  a.emplace_back(2);
+  a.emplace_back(3);
+  EXPECT_THAT(
+      a, ElementsAreArray({AnyWith<int>(1), AnyWith<int>(2), AnyWith<int>(3)}));
+
+  std::vector<SampleAnyType> b;
+  b.emplace_back("hello");
+  b.emplace_back("merhaba");
+  b.emplace_back("salut");
+  EXPECT_THAT(b, ElementsAreArray({AnyWith<std::string>("hello"),
+                                   AnyWith<std::string>("merhaba"),
+                                   AnyWith<std::string>("salut")}));
+}
+TEST(AnyWithTest, TestCompare) {
+  EXPECT_THAT(SampleAnyType(1), AnyWith<int>(Gt(0)));
+}
+
+TEST(AnyWithTest, DescribesSelf) {
+  const Matcher<const SampleAnyType&> m = AnyWith<int>(Eq(1));
+  EXPECT_THAT(Describe(m), ContainsRegex("is an 'any' type with value of type "
+                                         "'.*' and the value is equal to 1"));
+}
+
+TEST(AnyWithTest, ExplainsSelf) {
+  const Matcher<const SampleAnyType&> m = AnyWith<int>(Eq(1));
+
+  EXPECT_THAT(Explain(m, SampleAnyType(1)), ContainsRegex("whose value 1"));
+  EXPECT_THAT(Explain(m, SampleAnyType("A")),
+              HasSubstr("whose value is not of type '"));
+  EXPECT_THAT(Explain(m, SampleAnyType(2)), "whose value 2 doesn't match");
+}
+
+TEST(PointeeTest, WorksOnMoveOnlyType) {
+  std::unique_ptr<int> p(new int(3));
+  EXPECT_THAT(p, Pointee(Eq(3)));
+  EXPECT_THAT(p, Not(Pointee(Eq(2))));
+}
+
+TEST(NotTest, WorksOnMoveOnlyType) {
+  std::unique_ptr<int> p(new int(3));
+  EXPECT_THAT(p, Pointee(Eq(3)));
+  EXPECT_THAT(p, Not(Pointee(Eq(2))));
+}
+
+// Tests Args<k0, ..., kn>(m).
+
+TEST(ArgsTest, AcceptsZeroTemplateArg) {
+  const std::tuple<int, bool> t(5, true);
+  EXPECT_THAT(t, Args<>(Eq(std::tuple<>())));
+  EXPECT_THAT(t, Not(Args<>(Ne(std::tuple<>()))));
+}
+
+TEST(ArgsTest, AcceptsOneTemplateArg) {
+  const std::tuple<int, bool> t(5, true);
+  EXPECT_THAT(t, Args<0>(Eq(std::make_tuple(5))));
+  EXPECT_THAT(t, Args<1>(Eq(std::make_tuple(true))));
+  EXPECT_THAT(t, Not(Args<1>(Eq(std::make_tuple(false)))));
+}
+
+TEST(ArgsTest, AcceptsTwoTemplateArgs) {
+  const std::tuple<short, int, long> t(4, 5, 6L);  // NOLINT
+
+  EXPECT_THAT(t, (Args<0, 1>(Lt())));
+  EXPECT_THAT(t, (Args<1, 2>(Lt())));
+  EXPECT_THAT(t, Not(Args<0, 2>(Gt())));
+}
+
+TEST(ArgsTest, AcceptsRepeatedTemplateArgs) {
+  const std::tuple<short, int, long> t(4, 5, 6L);  // NOLINT
+  EXPECT_THAT(t, (Args<0, 0>(Eq())));
+  EXPECT_THAT(t, Not(Args<1, 1>(Ne())));
+}
+
+TEST(ArgsTest, AcceptsDecreasingTemplateArgs) {
+  const std::tuple<short, int, long> t(4, 5, 6L);  // NOLINT
+  EXPECT_THAT(t, (Args<2, 0>(Gt())));
+  EXPECT_THAT(t, Not(Args<2, 1>(Lt())));
+}
+
+MATCHER(SumIsZero, "") {
+  return std::get<0>(arg) + std::get<1>(arg) + std::get<2>(arg) == 0;
+}
+
+TEST(ArgsTest, AcceptsMoreTemplateArgsThanArityOfOriginalTuple) {
+  EXPECT_THAT(std::make_tuple(-1, 2), (Args<0, 0, 1>(SumIsZero())));
+  EXPECT_THAT(std::make_tuple(1, 2), Not(Args<0, 0, 1>(SumIsZero())));
+}
+
+TEST(ArgsTest, CanBeNested) {
+  const std::tuple<short, int, long, int> t(4, 5, 6L, 6);  // NOLINT
+  EXPECT_THAT(t, (Args<1, 2, 3>(Args<1, 2>(Eq()))));
+  EXPECT_THAT(t, (Args<0, 1, 3>(Args<0, 2>(Lt()))));
+}
+
+TEST(ArgsTest, CanMatchTupleByValue) {
+  typedef std::tuple<char, int, int> Tuple3;
+  const Matcher<Tuple3> m = Args<1, 2>(Lt());
+  EXPECT_TRUE(m.Matches(Tuple3('a', 1, 2)));
+  EXPECT_FALSE(m.Matches(Tuple3('b', 2, 2)));
+}
+
+TEST(ArgsTest, CanMatchTupleByReference) {
+  typedef std::tuple<char, char, int> Tuple3;
+  const Matcher<const Tuple3&> m = Args<0, 1>(Lt());
+  EXPECT_TRUE(m.Matches(Tuple3('a', 'b', 2)));
+  EXPECT_FALSE(m.Matches(Tuple3('b', 'b', 2)));
+}
+
+// Validates that arg is printed as str.
+MATCHER_P(PrintsAs, str, "") {
+  return testing::PrintToString(arg) == str;
+}
+
+TEST(ArgsTest, AcceptsTenTemplateArgs) {
+  EXPECT_THAT(std::make_tuple(0, 1L, 2, 3L, 4, 5, 6, 7, 8, 9),
+              (Args<9, 8, 7, 6, 5, 4, 3, 2, 1, 0>(
+                  PrintsAs("(9, 8, 7, 6, 5, 4, 3, 2, 1, 0)"))));
+  EXPECT_THAT(std::make_tuple(0, 1L, 2, 3L, 4, 5, 6, 7, 8, 9),
+              Not(Args<9, 8, 7, 6, 5, 4, 3, 2, 1, 0>(
+                  PrintsAs("(0, 8, 7, 6, 5, 4, 3, 2, 1, 0)"))));
+}
+
+TEST(ArgsTest, DescirbesSelfCorrectly) {
+  const Matcher<std::tuple<int, bool, char> > m = Args<2, 0>(Lt());
+  EXPECT_EQ("are a tuple whose fields (#2, #0) are a pair where "
+            "the first < the second",
+            Describe(m));
+}
+
+TEST(ArgsTest, DescirbesNestedArgsCorrectly) {
+  const Matcher<const std::tuple<int, bool, char, int>&> m =
+      Args<0, 2, 3>(Args<2, 0>(Lt()));
+  EXPECT_EQ("are a tuple whose fields (#0, #2, #3) are a tuple "
+            "whose fields (#2, #0) are a pair where the first < the second",
+            Describe(m));
+}
+
+TEST(ArgsTest, DescribesNegationCorrectly) {
+  const Matcher<std::tuple<int, char> > m = Args<1, 0>(Gt());
+  EXPECT_EQ("are a tuple whose fields (#1, #0) aren't a pair "
+            "where the first > the second",
+            DescribeNegation(m));
+}
+
+TEST(ArgsTest, ExplainsMatchResultWithoutInnerExplanation) {
+  const Matcher<std::tuple<bool, int, int> > m = Args<1, 2>(Eq());
+  EXPECT_EQ("whose fields (#1, #2) are (42, 42)",
+            Explain(m, std::make_tuple(false, 42, 42)));
+  EXPECT_EQ("whose fields (#1, #2) are (42, 43)",
+            Explain(m, std::make_tuple(false, 42, 43)));
+}
+
+// For testing Args<>'s explanation.
+class LessThanMatcher : public MatcherInterface<std::tuple<char, int> > {
+ public:
+  void DescribeTo(::std::ostream* /*os*/) const override {}
+
+  bool MatchAndExplain(std::tuple<char, int> value,
+                       MatchResultListener* listener) const override {
+    const int diff = std::get<0>(value) - std::get<1>(value);
+    if (diff > 0) {
+      *listener << "where the first value is " << diff
+                << " more than the second";
+    }
+    return diff < 0;
+  }
+};
+
+Matcher<std::tuple<char, int> > LessThan() {
+  return MakeMatcher(new LessThanMatcher);
+}
+
+TEST(ArgsTest, ExplainsMatchResultWithInnerExplanation) {
+  const Matcher<std::tuple<char, int, int> > m = Args<0, 2>(LessThan());
+  EXPECT_EQ(
+      "whose fields (#0, #2) are ('a' (97, 0x61), 42), "
+      "where the first value is 55 more than the second",
+      Explain(m, std::make_tuple('a', 42, 42)));
+  EXPECT_EQ("whose fields (#0, #2) are ('\\0', 43)",
+            Explain(m, std::make_tuple('\0', 42, 43)));
+}
+
+class PredicateFormatterFromMatcherTest : public ::testing::Test {
+ protected:
+  enum Behavior { kInitialSuccess, kAlwaysFail, kFlaky };
+
+  // A matcher that can return different results when used multiple times on the
+  // same input. No real matcher should do this; but this lets us test that we
+  // detect such behavior and fail appropriately.
+  class MockMatcher : public MatcherInterface<Behavior> {
+   public:
+    bool MatchAndExplain(Behavior behavior,
+                         MatchResultListener* listener) const override {
+      *listener << "[MatchAndExplain]";
+      switch (behavior) {
+        case kInitialSuccess:
+          // The first call to MatchAndExplain should use a "not interested"
+          // listener; so this is expected to return |true|. There should be no
+          // subsequent calls.
+          return !listener->IsInterested();
+
+        case kAlwaysFail:
+          return false;
+
+        case kFlaky:
+          // The first call to MatchAndExplain should use a "not interested"
+          // listener; so this will return |false|. Subsequent calls should have
+          // an "interested" listener; so this will return |true|, thus
+          // simulating a flaky matcher.
+          return listener->IsInterested();
+      }
+
+      GTEST_LOG_(FATAL) << "This should never be reached";
+      return false;
+    }
+
+    void DescribeTo(ostream* os) const override { *os << "[DescribeTo]"; }
+
+    void DescribeNegationTo(ostream* os) const override {
+      *os << "[DescribeNegationTo]";
+    }
+  };
+
+  AssertionResult RunPredicateFormatter(Behavior behavior) {
+    auto matcher = MakeMatcher(new MockMatcher);
+    PredicateFormatterFromMatcher<Matcher<Behavior>> predicate_formatter(
+        matcher);
+    return predicate_formatter("dummy-name", behavior);
+  }
+};
+
+TEST_F(PredicateFormatterFromMatcherTest, ShortCircuitOnSuccess) {
+  AssertionResult result = RunPredicateFormatter(kInitialSuccess);
+  EXPECT_TRUE(result);  // Implicit cast to bool.
+  std::string expect;
+  EXPECT_EQ(expect, result.message());
+}
+
+TEST_F(PredicateFormatterFromMatcherTest, NoShortCircuitOnFailure) {
+  AssertionResult result = RunPredicateFormatter(kAlwaysFail);
+  EXPECT_FALSE(result);  // Implicit cast to bool.
+  std::string expect =
+      "Value of: dummy-name\nExpected: [DescribeTo]\n"
+      "  Actual: 1, [MatchAndExplain]";
+  EXPECT_EQ(expect, result.message());
+}
+
+TEST_F(PredicateFormatterFromMatcherTest, DetectsFlakyShortCircuit) {
+  AssertionResult result = RunPredicateFormatter(kFlaky);
+  EXPECT_FALSE(result);  // Implicit cast to bool.
+  std::string expect =
+      "Value of: dummy-name\nExpected: [DescribeTo]\n"
+      "  The matcher failed on the initial attempt; but passed when rerun to "
+      "generate the explanation.\n"
+      "  Actual: 2, [MatchAndExplain]";
+  EXPECT_EQ(expect, result.message());
+}
+
+}  // namespace
+}  // namespace gmock_matchers_test
+}  // namespace testing
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-more-actions_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-more-actions_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..97ec5cf08f3f2ae5894bb4eb240c92bec3f7d76e
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-more-actions_test.cc
@@ -0,0 +1,698 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests the built-in actions in gmock-more-actions.h.
+
+#include "gmock/gmock-more-actions.h"
+
+#include <functional>
+#include <memory>
+#include <sstream>
+#include <string>
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+namespace testing {
+namespace gmock_more_actions_test {
+
+using ::std::plus;
+using ::std::string;
+using testing::_;
+using testing::Action;
+using testing::ActionInterface;
+using testing::DeleteArg;
+using testing::Invoke;
+using testing::Return;
+using testing::ReturnArg;
+using testing::ReturnPointee;
+using testing::SaveArg;
+using testing::SaveArgPointee;
+using testing::SetArgReferee;
+using testing::Unused;
+using testing::WithArg;
+using testing::WithoutArgs;
+
+// For suppressing compiler warnings on conversion possibly losing precision.
+inline short Short(short n) { return n; }  // NOLINT
+inline char Char(char ch) { return ch; }
+
+// Sample functions and functors for testing Invoke() and etc.
+int Nullary() { return 1; }
+
+class NullaryFunctor {
+ public:
+  int operator()() { return 2; }
+};
+
+bool g_done = false;
+void VoidNullary() { g_done = true; }
+
+class VoidNullaryFunctor {
+ public:
+  void operator()() { g_done = true; }
+};
+
+bool Unary(int x) { return x < 0; }
+
+const char* Plus1(const char* s) { return s + 1; }
+
+void VoidUnary(int /* n */) { g_done = true; }
+
+bool ByConstRef(const std::string& s) { return s == "Hi"; }
+
+const double g_double = 0;
+bool ReferencesGlobalDouble(const double& x) { return &x == &g_double; }
+
+std::string ByNonConstRef(std::string& s) { return s += "+"; }  // NOLINT
+
+struct UnaryFunctor {
+  int operator()(bool x) { return x ? 1 : -1; }
+};
+
+const char* Binary(const char* input, short n) { return input + n; }  // NOLINT
+
+void VoidBinary(int, char) { g_done = true; }
+
+int Ternary(int x, char y, short z) { return x + y + z; }  // NOLINT
+
+void VoidTernary(int, char, bool) { g_done = true; }
+
+int SumOf4(int a, int b, int c, int d) { return a + b + c + d; }
+
+int SumOfFirst2(int a, int b, Unused, Unused) { return a + b; }
+
+void VoidFunctionWithFourArguments(char, int, float, double) { g_done = true; }
+
+std::string Concat4(const char* s1, const char* s2, const char* s3,
+                    const char* s4) {
+  return std::string(s1) + s2 + s3 + s4;
+}
+
+int SumOf5(int a, int b, int c, int d, int e) { return a + b + c + d + e; }
+
+struct SumOf5Functor {
+  int operator()(int a, int b, int c, int d, int e) {
+    return a + b + c + d + e;
+  }
+};
+
+std::string Concat5(const char* s1, const char* s2, const char* s3,
+                    const char* s4, const char* s5) {
+  return std::string(s1) + s2 + s3 + s4 + s5;
+}
+
+int SumOf6(int a, int b, int c, int d, int e, int f) {
+  return a + b + c + d + e + f;
+}
+
+struct SumOf6Functor {
+  int operator()(int a, int b, int c, int d, int e, int f) {
+    return a + b + c + d + e + f;
+  }
+};
+
+std::string Concat6(const char* s1, const char* s2, const char* s3,
+                    const char* s4, const char* s5, const char* s6) {
+  return std::string(s1) + s2 + s3 + s4 + s5 + s6;
+}
+
+std::string Concat7(const char* s1, const char* s2, const char* s3,
+                    const char* s4, const char* s5, const char* s6,
+                    const char* s7) {
+  return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7;
+}
+
+std::string Concat8(const char* s1, const char* s2, const char* s3,
+                    const char* s4, const char* s5, const char* s6,
+                    const char* s7, const char* s8) {
+  return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8;
+}
+
+std::string Concat9(const char* s1, const char* s2, const char* s3,
+                    const char* s4, const char* s5, const char* s6,
+                    const char* s7, const char* s8, const char* s9) {
+  return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8 + s9;
+}
+
+std::string Concat10(const char* s1, const char* s2, const char* s3,
+                     const char* s4, const char* s5, const char* s6,
+                     const char* s7, const char* s8, const char* s9,
+                     const char* s10) {
+  return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8 + s9 + s10;
+}
+
+class Foo {
+ public:
+  Foo() : value_(123) {}
+
+  int Nullary() const { return value_; }
+
+  short Unary(long x) { return static_cast<short>(value_ + x); }  // NOLINT
+
+  std::string Binary(const std::string& str, char c) const { return str + c; }
+
+  int Ternary(int x, bool y, char z) { return value_ + x + y*z; }
+
+  int SumOf4(int a, int b, int c, int d) const {
+    return a + b + c + d + value_;
+  }
+
+  int SumOfLast2(Unused, Unused, int a, int b) const { return a + b; }
+
+  int SumOf5(int a, int b, int c, int d, int e) { return a + b + c + d + e; }
+
+  int SumOf6(int a, int b, int c, int d, int e, int f) {
+    return a + b + c + d + e + f;
+  }
+
+  std::string Concat7(const char* s1, const char* s2, const char* s3,
+                      const char* s4, const char* s5, const char* s6,
+                      const char* s7) {
+    return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7;
+  }
+
+  std::string Concat8(const char* s1, const char* s2, const char* s3,
+                      const char* s4, const char* s5, const char* s6,
+                      const char* s7, const char* s8) {
+    return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8;
+  }
+
+  std::string Concat9(const char* s1, const char* s2, const char* s3,
+                      const char* s4, const char* s5, const char* s6,
+                      const char* s7, const char* s8, const char* s9) {
+    return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8 + s9;
+  }
+
+  std::string Concat10(const char* s1, const char* s2, const char* s3,
+                       const char* s4, const char* s5, const char* s6,
+                       const char* s7, const char* s8, const char* s9,
+                       const char* s10) {
+    return std::string(s1) + s2 + s3 + s4 + s5 + s6 + s7 + s8 + s9 + s10;
+  }
+
+ private:
+  int value_;
+};
+
+// Tests using Invoke() with a nullary function.
+TEST(InvokeTest, Nullary) {
+  Action<int()> a = Invoke(Nullary);  // NOLINT
+  EXPECT_EQ(1, a.Perform(std::make_tuple()));
+}
+
+// Tests using Invoke() with a unary function.
+TEST(InvokeTest, Unary) {
+  Action<bool(int)> a = Invoke(Unary);  // NOLINT
+  EXPECT_FALSE(a.Perform(std::make_tuple(1)));
+  EXPECT_TRUE(a.Perform(std::make_tuple(-1)));
+}
+
+// Tests using Invoke() with a binary function.
+TEST(InvokeTest, Binary) {
+  Action<const char*(const char*, short)> a = Invoke(Binary);  // NOLINT
+  const char* p = "Hello";
+  EXPECT_EQ(p + 2, a.Perform(std::make_tuple(p, Short(2))));
+}
+
+// Tests using Invoke() with a ternary function.
+TEST(InvokeTest, Ternary) {
+  Action<int(int, char, short)> a = Invoke(Ternary);  // NOLINT
+  EXPECT_EQ(6, a.Perform(std::make_tuple(1, '\2', Short(3))));
+}
+
+// Tests using Invoke() with a 4-argument function.
+TEST(InvokeTest, FunctionThatTakes4Arguments) {
+  Action<int(int, int, int, int)> a = Invoke(SumOf4);  // NOLINT
+  EXPECT_EQ(1234, a.Perform(std::make_tuple(1000, 200, 30, 4)));
+}
+
+// Tests using Invoke() with a 5-argument function.
+TEST(InvokeTest, FunctionThatTakes5Arguments) {
+  Action<int(int, int, int, int, int)> a = Invoke(SumOf5);  // NOLINT
+  EXPECT_EQ(12345, a.Perform(std::make_tuple(10000, 2000, 300, 40, 5)));
+}
+
+// Tests using Invoke() with a 6-argument function.
+TEST(InvokeTest, FunctionThatTakes6Arguments) {
+  Action<int(int, int, int, int, int, int)> a = Invoke(SumOf6);  // NOLINT
+  EXPECT_EQ(123456,
+            a.Perform(std::make_tuple(100000, 20000, 3000, 400, 50, 6)));
+}
+
+// A helper that turns the type of a C-string literal from const
+// char[N] to const char*.
+inline const char* CharPtr(const char* s) { return s; }
+
+// Tests using Invoke() with a 7-argument function.
+TEST(InvokeTest, FunctionThatTakes7Arguments) {
+  Action<std::string(const char*, const char*, const char*, const char*,
+                     const char*, const char*, const char*)>
+      a = Invoke(Concat7);
+  EXPECT_EQ("1234567",
+            a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                                      CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                                      CharPtr("7"))));
+}
+
+// Tests using Invoke() with a 8-argument function.
+TEST(InvokeTest, FunctionThatTakes8Arguments) {
+  Action<std::string(const char*, const char*, const char*, const char*,
+                     const char*, const char*, const char*, const char*)>
+      a = Invoke(Concat8);
+  EXPECT_EQ("12345678",
+            a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                                      CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                                      CharPtr("7"), CharPtr("8"))));
+}
+
+// Tests using Invoke() with a 9-argument function.
+TEST(InvokeTest, FunctionThatTakes9Arguments) {
+  Action<std::string(const char*, const char*, const char*, const char*,
+                     const char*, const char*, const char*, const char*,
+                     const char*)>
+      a = Invoke(Concat9);
+  EXPECT_EQ("123456789", a.Perform(std::make_tuple(
+                             CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                             CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                             CharPtr("7"), CharPtr("8"), CharPtr("9"))));
+}
+
+// Tests using Invoke() with a 10-argument function.
+TEST(InvokeTest, FunctionThatTakes10Arguments) {
+  Action<std::string(const char*, const char*, const char*, const char*,
+                     const char*, const char*, const char*, const char*,
+                     const char*, const char*)>
+      a = Invoke(Concat10);
+  EXPECT_EQ("1234567890",
+            a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                                      CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                                      CharPtr("7"), CharPtr("8"), CharPtr("9"),
+                                      CharPtr("0"))));
+}
+
+// Tests using Invoke() with functions with parameters declared as Unused.
+TEST(InvokeTest, FunctionWithUnusedParameters) {
+  Action<int(int, int, double, const std::string&)> a1 = Invoke(SumOfFirst2);
+  std::tuple<int, int, double, std::string> dummy =
+      std::make_tuple(10, 2, 5.6, std::string("hi"));
+  EXPECT_EQ(12, a1.Perform(dummy));
+
+  Action<int(int, int, bool, int*)> a2 =
+      Invoke(SumOfFirst2);
+  EXPECT_EQ(
+      23, a2.Perform(std::make_tuple(20, 3, true, static_cast<int*>(nullptr))));
+}
+
+// Tests using Invoke() with methods with parameters declared as Unused.
+TEST(InvokeTest, MethodWithUnusedParameters) {
+  Foo foo;
+  Action<int(std::string, bool, int, int)> a1 = Invoke(&foo, &Foo::SumOfLast2);
+  EXPECT_EQ(12, a1.Perform(std::make_tuple(CharPtr("hi"), true, 10, 2)));
+
+  Action<int(char, double, int, int)> a2 =
+      Invoke(&foo, &Foo::SumOfLast2);
+  EXPECT_EQ(23, a2.Perform(std::make_tuple('a', 2.5, 20, 3)));
+}
+
+// Tests using Invoke() with a functor.
+TEST(InvokeTest, Functor) {
+  Action<long(long, int)> a = Invoke(plus<long>());  // NOLINT
+  EXPECT_EQ(3L, a.Perform(std::make_tuple(1, 2)));
+}
+
+// Tests using Invoke(f) as an action of a compatible type.
+TEST(InvokeTest, FunctionWithCompatibleType) {
+  Action<long(int, short, char, bool)> a = Invoke(SumOf4);  // NOLINT
+  EXPECT_EQ(4321, a.Perform(std::make_tuple(4000, Short(300), Char(20), true)));
+}
+
+// Tests using Invoke() with an object pointer and a method pointer.
+
+// Tests using Invoke() with a nullary method.
+TEST(InvokeMethodTest, Nullary) {
+  Foo foo;
+  Action<int()> a = Invoke(&foo, &Foo::Nullary);  // NOLINT
+  EXPECT_EQ(123, a.Perform(std::make_tuple()));
+}
+
+// Tests using Invoke() with a unary method.
+TEST(InvokeMethodTest, Unary) {
+  Foo foo;
+  Action<short(long)> a = Invoke(&foo, &Foo::Unary);  // NOLINT
+  EXPECT_EQ(4123, a.Perform(std::make_tuple(4000)));
+}
+
+// Tests using Invoke() with a binary method.
+TEST(InvokeMethodTest, Binary) {
+  Foo foo;
+  Action<std::string(const std::string&, char)> a = Invoke(&foo, &Foo::Binary);
+  std::string s("Hell");
+  std::tuple<std::string, char> dummy = std::make_tuple(s, 'o');
+  EXPECT_EQ("Hello", a.Perform(dummy));
+}
+
+// Tests using Invoke() with a ternary method.
+TEST(InvokeMethodTest, Ternary) {
+  Foo foo;
+  Action<int(int, bool, char)> a = Invoke(&foo, &Foo::Ternary);  // NOLINT
+  EXPECT_EQ(1124, a.Perform(std::make_tuple(1000, true, Char(1))));
+}
+
+// Tests using Invoke() with a 4-argument method.
+TEST(InvokeMethodTest, MethodThatTakes4Arguments) {
+  Foo foo;
+  Action<int(int, int, int, int)> a = Invoke(&foo, &Foo::SumOf4);  // NOLINT
+  EXPECT_EQ(1357, a.Perform(std::make_tuple(1000, 200, 30, 4)));
+}
+
+// Tests using Invoke() with a 5-argument method.
+TEST(InvokeMethodTest, MethodThatTakes5Arguments) {
+  Foo foo;
+  Action<int(int, int, int, int, int)> a = Invoke(&foo, &Foo::SumOf5);  // NOLINT
+  EXPECT_EQ(12345, a.Perform(std::make_tuple(10000, 2000, 300, 40, 5)));
+}
+
+// Tests using Invoke() with a 6-argument method.
+TEST(InvokeMethodTest, MethodThatTakes6Arguments) {
+  Foo foo;
+  Action<int(int, int, int, int, int, int)> a =  // NOLINT
+      Invoke(&foo, &Foo::SumOf6);
+  EXPECT_EQ(123456,
+            a.Perform(std::make_tuple(100000, 20000, 3000, 400, 50, 6)));
+}
+
+// Tests using Invoke() with a 7-argument method.
+TEST(InvokeMethodTest, MethodThatTakes7Arguments) {
+  Foo foo;
+  Action<std::string(const char*, const char*, const char*, const char*,
+                     const char*, const char*, const char*)>
+      a = Invoke(&foo, &Foo::Concat7);
+  EXPECT_EQ("1234567",
+            a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                                      CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                                      CharPtr("7"))));
+}
+
+// Tests using Invoke() with a 8-argument method.
+TEST(InvokeMethodTest, MethodThatTakes8Arguments) {
+  Foo foo;
+  Action<std::string(const char*, const char*, const char*, const char*,
+                     const char*, const char*, const char*, const char*)>
+      a = Invoke(&foo, &Foo::Concat8);
+  EXPECT_EQ("12345678",
+            a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                                      CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                                      CharPtr("7"), CharPtr("8"))));
+}
+
+// Tests using Invoke() with a 9-argument method.
+TEST(InvokeMethodTest, MethodThatTakes9Arguments) {
+  Foo foo;
+  Action<std::string(const char*, const char*, const char*, const char*,
+                     const char*, const char*, const char*, const char*,
+                     const char*)>
+      a = Invoke(&foo, &Foo::Concat9);
+  EXPECT_EQ("123456789", a.Perform(std::make_tuple(
+                             CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                             CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                             CharPtr("7"), CharPtr("8"), CharPtr("9"))));
+}
+
+// Tests using Invoke() with a 10-argument method.
+TEST(InvokeMethodTest, MethodThatTakes10Arguments) {
+  Foo foo;
+  Action<std::string(const char*, const char*, const char*, const char*,
+                     const char*, const char*, const char*, const char*,
+                     const char*, const char*)>
+      a = Invoke(&foo, &Foo::Concat10);
+  EXPECT_EQ("1234567890",
+            a.Perform(std::make_tuple(CharPtr("1"), CharPtr("2"), CharPtr("3"),
+                                      CharPtr("4"), CharPtr("5"), CharPtr("6"),
+                                      CharPtr("7"), CharPtr("8"), CharPtr("9"),
+                                      CharPtr("0"))));
+}
+
+// Tests using Invoke(f) as an action of a compatible type.
+TEST(InvokeMethodTest, MethodWithCompatibleType) {
+  Foo foo;
+  Action<long(int, short, char, bool)> a =  // NOLINT
+      Invoke(&foo, &Foo::SumOf4);
+  EXPECT_EQ(4444, a.Perform(std::make_tuple(4000, Short(300), Char(20), true)));
+}
+
+// Tests using WithoutArgs with an action that takes no argument.
+TEST(WithoutArgsTest, NoArg) {
+  Action<int(int n)> a = WithoutArgs(Invoke(Nullary));  // NOLINT
+  EXPECT_EQ(1, a.Perform(std::make_tuple(2)));
+}
+
+// Tests using WithArg with an action that takes 1 argument.
+TEST(WithArgTest, OneArg) {
+  Action<bool(double x, int n)> b = WithArg<1>(Invoke(Unary));  // NOLINT
+  EXPECT_TRUE(b.Perform(std::make_tuple(1.5, -1)));
+  EXPECT_FALSE(b.Perform(std::make_tuple(1.5, 1)));
+}
+
+TEST(ReturnArgActionTest, WorksForOneArgIntArg0) {
+  const Action<int(int)> a = ReturnArg<0>();
+  EXPECT_EQ(5, a.Perform(std::make_tuple(5)));
+}
+
+TEST(ReturnArgActionTest, WorksForMultiArgBoolArg0) {
+  const Action<bool(bool, bool, bool)> a = ReturnArg<0>();
+  EXPECT_TRUE(a.Perform(std::make_tuple(true, false, false)));
+}
+
+TEST(ReturnArgActionTest, WorksForMultiArgStringArg2) {
+  const Action<std::string(int, int, std::string, int)> a = ReturnArg<2>();
+  EXPECT_EQ("seven", a.Perform(std::make_tuple(5, 6, std::string("seven"), 8)));
+}
+
+TEST(SaveArgActionTest, WorksForSameType) {
+  int result = 0;
+  const Action<void(int n)> a1 = SaveArg<0>(&result);
+  a1.Perform(std::make_tuple(5));
+  EXPECT_EQ(5, result);
+}
+
+TEST(SaveArgActionTest, WorksForCompatibleType) {
+  int result = 0;
+  const Action<void(bool, char)> a1 = SaveArg<1>(&result);
+  a1.Perform(std::make_tuple(true, 'a'));
+  EXPECT_EQ('a', result);
+}
+
+TEST(SaveArgPointeeActionTest, WorksForSameType) {
+  int result = 0;
+  const int value = 5;
+  const Action<void(const int*)> a1 = SaveArgPointee<0>(&result);
+  a1.Perform(std::make_tuple(&value));
+  EXPECT_EQ(5, result);
+}
+
+TEST(SaveArgPointeeActionTest, WorksForCompatibleType) {
+  int result = 0;
+  char value = 'a';
+  const Action<void(bool, char*)> a1 = SaveArgPointee<1>(&result);
+  a1.Perform(std::make_tuple(true, &value));
+  EXPECT_EQ('a', result);
+}
+
+TEST(SetArgRefereeActionTest, WorksForSameType) {
+  int value = 0;
+  const Action<void(int&)> a1 = SetArgReferee<0>(1);
+  a1.Perform(std::tuple<int&>(value));
+  EXPECT_EQ(1, value);
+}
+
+TEST(SetArgRefereeActionTest, WorksForCompatibleType) {
+  int value = 0;
+  const Action<void(int, int&)> a1 = SetArgReferee<1>('a');
+  a1.Perform(std::tuple<int, int&>(0, value));
+  EXPECT_EQ('a', value);
+}
+
+TEST(SetArgRefereeActionTest, WorksWithExtraArguments) {
+  int value = 0;
+  const Action<void(bool, int, int&, const char*)> a1 = SetArgReferee<2>('a');
+  a1.Perform(std::tuple<bool, int, int&, const char*>(true, 0, value, "hi"));
+  EXPECT_EQ('a', value);
+}
+
+// A class that can be used to verify that its destructor is called: it will set
+// the bool provided to the constructor to true when destroyed.
+class DeletionTester {
+ public:
+  explicit DeletionTester(bool* is_deleted)
+    : is_deleted_(is_deleted) {
+    // Make sure the bit is set to false.
+    *is_deleted_ = false;
+  }
+
+  ~DeletionTester() {
+    *is_deleted_ = true;
+  }
+
+ private:
+  bool* is_deleted_;
+};
+
+TEST(DeleteArgActionTest, OneArg) {
+  bool is_deleted = false;
+  DeletionTester* t = new DeletionTester(&is_deleted);
+  const Action<void(DeletionTester*)> a1 = DeleteArg<0>();      // NOLINT
+  EXPECT_FALSE(is_deleted);
+  a1.Perform(std::make_tuple(t));
+  EXPECT_TRUE(is_deleted);
+}
+
+TEST(DeleteArgActionTest, TenArgs) {
+  bool is_deleted = false;
+  DeletionTester* t = new DeletionTester(&is_deleted);
+  const Action<void(bool, int, int, const char*, bool,
+                    int, int, int, int, DeletionTester*)> a1 = DeleteArg<9>();
+  EXPECT_FALSE(is_deleted);
+  a1.Perform(std::make_tuple(true, 5, 6, CharPtr("hi"), false, 7, 8, 9, 10, t));
+  EXPECT_TRUE(is_deleted);
+}
+
+#if GTEST_HAS_EXCEPTIONS
+
+TEST(ThrowActionTest, ThrowsGivenExceptionInVoidFunction) {
+  const Action<void(int n)> a = Throw('a');
+  EXPECT_THROW(a.Perform(std::make_tuple(0)), char);
+}
+
+class MyException {};
+
+TEST(ThrowActionTest, ThrowsGivenExceptionInNonVoidFunction) {
+  const Action<double(char ch)> a = Throw(MyException());
+  EXPECT_THROW(a.Perform(std::make_tuple('0')), MyException);
+}
+
+TEST(ThrowActionTest, ThrowsGivenExceptionInNullaryFunction) {
+  const Action<double()> a = Throw(MyException());
+  EXPECT_THROW(a.Perform(std::make_tuple()), MyException);
+}
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
+// Tests that SetArrayArgument<N>(first, last) sets the elements of the array
+// pointed to by the N-th (0-based) argument to values in range [first, last).
+TEST(SetArrayArgumentTest, SetsTheNthArray) {
+  typedef void MyFunction(bool, int*, char*);
+  int numbers[] = { 1, 2, 3 };
+  Action<MyFunction> a = SetArrayArgument<1>(numbers, numbers + 3);
+
+  int n[4] = {};
+  int* pn = n;
+  char ch[4] = {};
+  char* pch = ch;
+  a.Perform(std::make_tuple(true, pn, pch));
+  EXPECT_EQ(1, n[0]);
+  EXPECT_EQ(2, n[1]);
+  EXPECT_EQ(3, n[2]);
+  EXPECT_EQ(0, n[3]);
+  EXPECT_EQ('\0', ch[0]);
+  EXPECT_EQ('\0', ch[1]);
+  EXPECT_EQ('\0', ch[2]);
+  EXPECT_EQ('\0', ch[3]);
+
+  // Tests first and last are iterators.
+  std::string letters = "abc";
+  a = SetArrayArgument<2>(letters.begin(), letters.end());
+  std::fill_n(n, 4, 0);
+  std::fill_n(ch, 4, '\0');
+  a.Perform(std::make_tuple(true, pn, pch));
+  EXPECT_EQ(0, n[0]);
+  EXPECT_EQ(0, n[1]);
+  EXPECT_EQ(0, n[2]);
+  EXPECT_EQ(0, n[3]);
+  EXPECT_EQ('a', ch[0]);
+  EXPECT_EQ('b', ch[1]);
+  EXPECT_EQ('c', ch[2]);
+  EXPECT_EQ('\0', ch[3]);
+}
+
+// Tests SetArrayArgument<N>(first, last) where first == last.
+TEST(SetArrayArgumentTest, SetsTheNthArrayWithEmptyRange) {
+  typedef void MyFunction(bool, int*);
+  int numbers[] = { 1, 2, 3 };
+  Action<MyFunction> a = SetArrayArgument<1>(numbers, numbers);
+
+  int n[4] = {};
+  int* pn = n;
+  a.Perform(std::make_tuple(true, pn));
+  EXPECT_EQ(0, n[0]);
+  EXPECT_EQ(0, n[1]);
+  EXPECT_EQ(0, n[2]);
+  EXPECT_EQ(0, n[3]);
+}
+
+// Tests SetArrayArgument<N>(first, last) where *first is convertible
+// (but not equal) to the argument type.
+TEST(SetArrayArgumentTest, SetsTheNthArrayWithConvertibleType) {
+  typedef void MyFunction(bool, int*);
+  char chars[] = { 97, 98, 99 };
+  Action<MyFunction> a = SetArrayArgument<1>(chars, chars + 3);
+
+  int codes[4] = { 111, 222, 333, 444 };
+  int* pcodes = codes;
+  a.Perform(std::make_tuple(true, pcodes));
+  EXPECT_EQ(97, codes[0]);
+  EXPECT_EQ(98, codes[1]);
+  EXPECT_EQ(99, codes[2]);
+  EXPECT_EQ(444, codes[3]);
+}
+
+// Test SetArrayArgument<N>(first, last) with iterator as argument.
+TEST(SetArrayArgumentTest, SetsTheNthArrayWithIteratorArgument) {
+  typedef void MyFunction(bool, std::back_insert_iterator<std::string>);
+  std::string letters = "abc";
+  Action<MyFunction> a = SetArrayArgument<1>(letters.begin(), letters.end());
+
+  std::string s;
+  a.Perform(std::make_tuple(true, back_inserter(s)));
+  EXPECT_EQ(letters, s);
+}
+
+TEST(ReturnPointeeTest, Works) {
+  int n = 42;
+  const Action<int()> a = ReturnPointee(&n);
+  EXPECT_EQ(42, a.Perform(std::make_tuple()));
+
+  n = 43;
+  EXPECT_EQ(43, a.Perform(std::make_tuple()));
+}
+
+}  // namespace gmock_generated_actions_test
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-nice-strict_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-nice-strict_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0a201ed7ebb072810fd9af9be0d24d8e9112ce7a
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-nice-strict_test.cc
@@ -0,0 +1,500 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "gmock/gmock-nice-strict.h"
+
+#include <string>
+#include <utility>
+#include "gmock/gmock.h"
+#include "gtest/gtest-spi.h"
+#include "gtest/gtest.h"
+
+// This must not be defined inside the ::testing namespace, or it will
+// clash with ::testing::Mock.
+class Mock {
+ public:
+  Mock() {}
+
+  MOCK_METHOD0(DoThis, void());
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(Mock);
+};
+
+namespace testing {
+namespace gmock_nice_strict_test {
+
+using testing::GMOCK_FLAG(verbose);
+using testing::HasSubstr;
+using testing::NaggyMock;
+using testing::NiceMock;
+using testing::StrictMock;
+
+#if GTEST_HAS_STREAM_REDIRECTION
+using testing::internal::CaptureStdout;
+using testing::internal::GetCapturedStdout;
+#endif
+
+// Class without default constructor.
+class NotDefaultConstructible {
+ public:
+  explicit NotDefaultConstructible(int) {}
+};
+
+// Defines some mock classes needed by the tests.
+
+class Foo {
+ public:
+  virtual ~Foo() {}
+
+  virtual void DoThis() = 0;
+  virtual int DoThat(bool flag) = 0;
+};
+
+class MockFoo : public Foo {
+ public:
+  MockFoo() {}
+  void Delete() { delete this; }
+
+  MOCK_METHOD0(DoThis, void());
+  MOCK_METHOD1(DoThat, int(bool flag));
+  MOCK_METHOD0(ReturnNonDefaultConstructible, NotDefaultConstructible());
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFoo);
+};
+
+class MockBar {
+ public:
+  explicit MockBar(const std::string& s) : str_(s) {}
+
+  MockBar(char a1, char a2, std::string a3, std::string a4, int a5, int a6,
+          const std::string& a7, const std::string& a8, bool a9, bool a10) {
+    str_ = std::string() + a1 + a2 + a3 + a4 + static_cast<char>(a5) +
+        static_cast<char>(a6) + a7 + a8 + (a9 ? 'T' : 'F') + (a10 ? 'T' : 'F');
+  }
+
+  virtual ~MockBar() {}
+
+  const std::string& str() const { return str_; }
+
+  MOCK_METHOD0(This, int());
+  MOCK_METHOD2(That, std::string(int, bool));
+
+ private:
+  std::string str_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockBar);
+};
+
+
+class MockBaz {
+ public:
+  class MoveOnly {
+   public:
+    MoveOnly() = default;
+
+    MoveOnly(const MoveOnly&) = delete;
+    MoveOnly& operator=(const MoveOnly&) = delete;
+
+    MoveOnly(MoveOnly&&) = default;
+    MoveOnly& operator=(MoveOnly&&) = default;
+  };
+
+  MockBaz(MoveOnly) {}
+};
+
+#if GTEST_HAS_STREAM_REDIRECTION
+
+// Tests that a raw mock generates warnings for uninteresting calls.
+TEST(RawMockTest, WarningForUninterestingCall) {
+  const std::string saved_flag = GMOCK_FLAG(verbose);
+  GMOCK_FLAG(verbose) = "warning";
+
+  MockFoo raw_foo;
+
+  CaptureStdout();
+  raw_foo.DoThis();
+  raw_foo.DoThat(true);
+  EXPECT_THAT(GetCapturedStdout(),
+              HasSubstr("Uninteresting mock function call"));
+
+  GMOCK_FLAG(verbose) = saved_flag;
+}
+
+// Tests that a raw mock generates warnings for uninteresting calls
+// that delete the mock object.
+TEST(RawMockTest, WarningForUninterestingCallAfterDeath) {
+  const std::string saved_flag = GMOCK_FLAG(verbose);
+  GMOCK_FLAG(verbose) = "warning";
+
+  MockFoo* const raw_foo = new MockFoo;
+
+  ON_CALL(*raw_foo, DoThis())
+      .WillByDefault(Invoke(raw_foo, &MockFoo::Delete));
+
+  CaptureStdout();
+  raw_foo->DoThis();
+  EXPECT_THAT(GetCapturedStdout(),
+              HasSubstr("Uninteresting mock function call"));
+
+  GMOCK_FLAG(verbose) = saved_flag;
+}
+
+// Tests that a raw mock generates informational logs for
+// uninteresting calls.
+TEST(RawMockTest, InfoForUninterestingCall) {
+  MockFoo raw_foo;
+
+  const std::string saved_flag = GMOCK_FLAG(verbose);
+  GMOCK_FLAG(verbose) = "info";
+  CaptureStdout();
+  raw_foo.DoThis();
+  EXPECT_THAT(GetCapturedStdout(),
+              HasSubstr("Uninteresting mock function call"));
+
+  GMOCK_FLAG(verbose) = saved_flag;
+}
+
+TEST(RawMockTest, IsNaggy_IsNice_IsStrict) {
+  MockFoo raw_foo;
+  EXPECT_TRUE(Mock::IsNaggy(&raw_foo));
+  EXPECT_FALSE(Mock::IsNice(&raw_foo));
+  EXPECT_FALSE(Mock::IsStrict(&raw_foo));
+}
+
+// Tests that a nice mock generates no warning for uninteresting calls.
+TEST(NiceMockTest, NoWarningForUninterestingCall) {
+  NiceMock<MockFoo> nice_foo;
+
+  CaptureStdout();
+  nice_foo.DoThis();
+  nice_foo.DoThat(true);
+  EXPECT_EQ("", GetCapturedStdout());
+}
+
+// Tests that a nice mock generates no warning for uninteresting calls
+// that delete the mock object.
+TEST(NiceMockTest, NoWarningForUninterestingCallAfterDeath) {
+  NiceMock<MockFoo>* const nice_foo = new NiceMock<MockFoo>;
+
+  ON_CALL(*nice_foo, DoThis())
+      .WillByDefault(Invoke(nice_foo, &MockFoo::Delete));
+
+  CaptureStdout();
+  nice_foo->DoThis();
+  EXPECT_EQ("", GetCapturedStdout());
+}
+
+// Tests that a nice mock generates informational logs for
+// uninteresting calls.
+TEST(NiceMockTest, InfoForUninterestingCall) {
+  NiceMock<MockFoo> nice_foo;
+
+  const std::string saved_flag = GMOCK_FLAG(verbose);
+  GMOCK_FLAG(verbose) = "info";
+  CaptureStdout();
+  nice_foo.DoThis();
+  EXPECT_THAT(GetCapturedStdout(),
+              HasSubstr("Uninteresting mock function call"));
+
+  GMOCK_FLAG(verbose) = saved_flag;
+}
+
+#endif  // GTEST_HAS_STREAM_REDIRECTION
+
+// Tests that a nice mock allows expected calls.
+TEST(NiceMockTest, AllowsExpectedCall) {
+  NiceMock<MockFoo> nice_foo;
+
+  EXPECT_CALL(nice_foo, DoThis());
+  nice_foo.DoThis();
+}
+
+// Tests that an unexpected call on a nice mock which returns a
+// not-default-constructible type throws an exception and the exception contains
+// the method's name.
+TEST(NiceMockTest, ThrowsExceptionForUnknownReturnTypes) {
+  NiceMock<MockFoo> nice_foo;
+#if GTEST_HAS_EXCEPTIONS
+  try {
+    nice_foo.ReturnNonDefaultConstructible();
+    FAIL();
+  } catch (const std::runtime_error& ex) {
+    EXPECT_THAT(ex.what(), HasSubstr("ReturnNonDefaultConstructible"));
+  }
+#else
+  EXPECT_DEATH_IF_SUPPORTED({ nice_foo.ReturnNonDefaultConstructible(); }, "");
+#endif
+}
+
+// Tests that an unexpected call on a nice mock fails.
+TEST(NiceMockTest, UnexpectedCallFails) {
+  NiceMock<MockFoo> nice_foo;
+
+  EXPECT_CALL(nice_foo, DoThis()).Times(0);
+  EXPECT_NONFATAL_FAILURE(nice_foo.DoThis(), "called more times than expected");
+}
+
+// Tests that NiceMock works with a mock class that has a non-default
+// constructor.
+TEST(NiceMockTest, NonDefaultConstructor) {
+  NiceMock<MockBar> nice_bar("hi");
+  EXPECT_EQ("hi", nice_bar.str());
+
+  nice_bar.This();
+  nice_bar.That(5, true);
+}
+
+// Tests that NiceMock works with a mock class that has a 10-ary
+// non-default constructor.
+TEST(NiceMockTest, NonDefaultConstructor10) {
+  NiceMock<MockBar> nice_bar('a', 'b', "c", "d", 'e', 'f',
+                             "g", "h", true, false);
+  EXPECT_EQ("abcdefghTF", nice_bar.str());
+
+  nice_bar.This();
+  nice_bar.That(5, true);
+}
+
+TEST(NiceMockTest, AllowLeak) {
+  NiceMock<MockFoo>* leaked = new NiceMock<MockFoo>;
+  Mock::AllowLeak(leaked);
+  EXPECT_CALL(*leaked, DoThis());
+  leaked->DoThis();
+}
+
+TEST(NiceMockTest, MoveOnlyConstructor) {
+  NiceMock<MockBaz> nice_baz(MockBaz::MoveOnly{});
+}
+
+// Tests that NiceMock<Mock> compiles where Mock is a user-defined
+// class (as opposed to ::testing::Mock).
+TEST(NiceMockTest, AcceptsClassNamedMock) {
+  NiceMock< ::Mock> nice;
+  EXPECT_CALL(nice, DoThis());
+  nice.DoThis();
+}
+
+TEST(NiceMockTest, IsNaggy_IsNice_IsStrict) {
+  NiceMock<MockFoo> nice_foo;
+  EXPECT_FALSE(Mock::IsNaggy(&nice_foo));
+  EXPECT_TRUE(Mock::IsNice(&nice_foo));
+  EXPECT_FALSE(Mock::IsStrict(&nice_foo));
+}
+
+#if GTEST_HAS_STREAM_REDIRECTION
+
+// Tests that a naggy mock generates warnings for uninteresting calls.
+TEST(NaggyMockTest, WarningForUninterestingCall) {
+  const std::string saved_flag = GMOCK_FLAG(verbose);
+  GMOCK_FLAG(verbose) = "warning";
+
+  NaggyMock<MockFoo> naggy_foo;
+
+  CaptureStdout();
+  naggy_foo.DoThis();
+  naggy_foo.DoThat(true);
+  EXPECT_THAT(GetCapturedStdout(),
+              HasSubstr("Uninteresting mock function call"));
+
+  GMOCK_FLAG(verbose) = saved_flag;
+}
+
+// Tests that a naggy mock generates a warning for an uninteresting call
+// that deletes the mock object.
+TEST(NaggyMockTest, WarningForUninterestingCallAfterDeath) {
+  const std::string saved_flag = GMOCK_FLAG(verbose);
+  GMOCK_FLAG(verbose) = "warning";
+
+  NaggyMock<MockFoo>* const naggy_foo = new NaggyMock<MockFoo>;
+
+  ON_CALL(*naggy_foo, DoThis())
+      .WillByDefault(Invoke(naggy_foo, &MockFoo::Delete));
+
+  CaptureStdout();
+  naggy_foo->DoThis();
+  EXPECT_THAT(GetCapturedStdout(),
+              HasSubstr("Uninteresting mock function call"));
+
+  GMOCK_FLAG(verbose) = saved_flag;
+}
+
+#endif  // GTEST_HAS_STREAM_REDIRECTION
+
+// Tests that a naggy mock allows expected calls.
+TEST(NaggyMockTest, AllowsExpectedCall) {
+  NaggyMock<MockFoo> naggy_foo;
+
+  EXPECT_CALL(naggy_foo, DoThis());
+  naggy_foo.DoThis();
+}
+
+// Tests that an unexpected call on a naggy mock fails.
+TEST(NaggyMockTest, UnexpectedCallFails) {
+  NaggyMock<MockFoo> naggy_foo;
+
+  EXPECT_CALL(naggy_foo, DoThis()).Times(0);
+  EXPECT_NONFATAL_FAILURE(naggy_foo.DoThis(),
+                          "called more times than expected");
+}
+
+// Tests that NaggyMock works with a mock class that has a non-default
+// constructor.
+TEST(NaggyMockTest, NonDefaultConstructor) {
+  NaggyMock<MockBar> naggy_bar("hi");
+  EXPECT_EQ("hi", naggy_bar.str());
+
+  naggy_bar.This();
+  naggy_bar.That(5, true);
+}
+
+// Tests that NaggyMock works with a mock class that has a 10-ary
+// non-default constructor.
+TEST(NaggyMockTest, NonDefaultConstructor10) {
+  NaggyMock<MockBar> naggy_bar('0', '1', "2", "3", '4', '5',
+                               "6", "7", true, false);
+  EXPECT_EQ("01234567TF", naggy_bar.str());
+
+  naggy_bar.This();
+  naggy_bar.That(5, true);
+}
+
+TEST(NaggyMockTest, AllowLeak) {
+  NaggyMock<MockFoo>* leaked = new NaggyMock<MockFoo>;
+  Mock::AllowLeak(leaked);
+  EXPECT_CALL(*leaked, DoThis());
+  leaked->DoThis();
+}
+
+TEST(NaggyMockTest, MoveOnlyConstructor) {
+  NaggyMock<MockBaz> naggy_baz(MockBaz::MoveOnly{});
+}
+
+// Tests that NaggyMock<Mock> compiles where Mock is a user-defined
+// class (as opposed to ::testing::Mock).
+TEST(NaggyMockTest, AcceptsClassNamedMock) {
+  NaggyMock< ::Mock> naggy;
+  EXPECT_CALL(naggy, DoThis());
+  naggy.DoThis();
+}
+
+TEST(NaggyMockTest, IsNaggy_IsNice_IsStrict) {
+  NaggyMock<MockFoo> naggy_foo;
+  EXPECT_TRUE(Mock::IsNaggy(&naggy_foo));
+  EXPECT_FALSE(Mock::IsNice(&naggy_foo));
+  EXPECT_FALSE(Mock::IsStrict(&naggy_foo));
+}
+
+// Tests that a strict mock allows expected calls.
+TEST(StrictMockTest, AllowsExpectedCall) {
+  StrictMock<MockFoo> strict_foo;
+
+  EXPECT_CALL(strict_foo, DoThis());
+  strict_foo.DoThis();
+}
+
+// Tests that an unexpected call on a strict mock fails.
+TEST(StrictMockTest, UnexpectedCallFails) {
+  StrictMock<MockFoo> strict_foo;
+
+  EXPECT_CALL(strict_foo, DoThis()).Times(0);
+  EXPECT_NONFATAL_FAILURE(strict_foo.DoThis(),
+                          "called more times than expected");
+}
+
+// Tests that an uninteresting call on a strict mock fails.
+TEST(StrictMockTest, UninterestingCallFails) {
+  StrictMock<MockFoo> strict_foo;
+
+  EXPECT_NONFATAL_FAILURE(strict_foo.DoThis(),
+                          "Uninteresting mock function call");
+}
+
+// Tests that an uninteresting call on a strict mock fails, even if
+// the call deletes the mock object.
+TEST(StrictMockTest, UninterestingCallFailsAfterDeath) {
+  StrictMock<MockFoo>* const strict_foo = new StrictMock<MockFoo>;
+
+  ON_CALL(*strict_foo, DoThis())
+      .WillByDefault(Invoke(strict_foo, &MockFoo::Delete));
+
+  EXPECT_NONFATAL_FAILURE(strict_foo->DoThis(),
+                          "Uninteresting mock function call");
+}
+
+// Tests that StrictMock works with a mock class that has a
+// non-default constructor.
+TEST(StrictMockTest, NonDefaultConstructor) {
+  StrictMock<MockBar> strict_bar("hi");
+  EXPECT_EQ("hi", strict_bar.str());
+
+  EXPECT_NONFATAL_FAILURE(strict_bar.That(5, true),
+                          "Uninteresting mock function call");
+}
+
+// Tests that StrictMock works with a mock class that has a 10-ary
+// non-default constructor.
+TEST(StrictMockTest, NonDefaultConstructor10) {
+  StrictMock<MockBar> strict_bar('a', 'b', "c", "d", 'e', 'f',
+                                 "g", "h", true, false);
+  EXPECT_EQ("abcdefghTF", strict_bar.str());
+
+  EXPECT_NONFATAL_FAILURE(strict_bar.That(5, true),
+                          "Uninteresting mock function call");
+}
+
+TEST(StrictMockTest, AllowLeak) {
+  StrictMock<MockFoo>* leaked = new StrictMock<MockFoo>;
+  Mock::AllowLeak(leaked);
+  EXPECT_CALL(*leaked, DoThis());
+  leaked->DoThis();
+}
+
+TEST(StrictMockTest, MoveOnlyConstructor) {
+  StrictMock<MockBaz> strict_baz(MockBaz::MoveOnly{});
+}
+
+// Tests that StrictMock<Mock> compiles where Mock is a user-defined
+// class (as opposed to ::testing::Mock).
+TEST(StrictMockTest, AcceptsClassNamedMock) {
+  StrictMock< ::Mock> strict;
+  EXPECT_CALL(strict, DoThis());
+  strict.DoThis();
+}
+
+TEST(StrictMockTest, IsNaggy_IsNice_IsStrict) {
+  StrictMock<MockFoo> strict_foo;
+  EXPECT_FALSE(Mock::IsNaggy(&strict_foo));
+  EXPECT_FALSE(Mock::IsNice(&strict_foo));
+  EXPECT_TRUE(Mock::IsStrict(&strict_foo));
+}
+
+}  // namespace gmock_nice_strict_test
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-port_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-port_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a2c2be248864b2bc23711a0ef34666c9fa7a4649
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-port_test.cc
@@ -0,0 +1,42 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests the internal cross-platform support utilities.
+
+#include "gmock/internal/gmock-port.h"
+#include "gtest/gtest.h"
+
+// NOTE: if this file is left without tests for some reason, put a dummy
+// test here to make references to symbols in the gtest library and avoid
+// 'undefined symbol' linker errors in gmock_main:
+
+TEST(DummyTest, Dummy) {}
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-pp-string_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-pp-string_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6f66cf156a90f9ec413010ac0c8581776dbd362d
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-pp-string_test.cc
@@ -0,0 +1,206 @@
+// Copyright 2018, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests the internal preprocessor macro library.
+#include "gmock/internal/gmock-pp.h"
+
+#include <string>
+
+#include "gmock/gmock.h"
+
+namespace testing {
+namespace {
+
+// Matcher to verify that to strings are identical up to whitespace
+// Not 100% correct, because it treats "AB" as equal to "A B".
+::testing::Matcher<const std::string&> SameExceptSpaces(const std::string& s) {
+  auto remove_spaces = [](std::string to_split) {
+    to_split.erase(std::remove(to_split.begin(), to_split.end(), ' '),
+                   to_split.end());
+    return to_split;
+  };
+  return ::testing::ResultOf(remove_spaces, remove_spaces(s));
+}
+
+// Verify that a macro expands to a given text. Ignores whitespace difference.
+// In MSVC, GMOCK_PP_STRINGIZE() returns nothing, rather than "". So concatenate
+// with an empty string.
+#define EXPECT_EXPANSION(Result, Macro) \
+  EXPECT_THAT("" GMOCK_PP_STRINGIZE(Macro), SameExceptSpaces(Result))
+
+TEST(Macros, Cat) {
+  EXPECT_EXPANSION("14", GMOCK_PP_CAT(1, 4));
+  EXPECT_EXPANSION("+=", GMOCK_PP_CAT(+, =));
+}
+
+TEST(Macros, Narg) {
+  EXPECT_EXPANSION("1", GMOCK_PP_NARG());
+  EXPECT_EXPANSION("1", GMOCK_PP_NARG(x));
+  EXPECT_EXPANSION("2", GMOCK_PP_NARG(x, y));
+  EXPECT_EXPANSION("3", GMOCK_PP_NARG(x, y, z));
+  EXPECT_EXPANSION("4", GMOCK_PP_NARG(x, y, z, w));
+
+  EXPECT_EXPANSION("0", GMOCK_PP_NARG0());
+  EXPECT_EXPANSION("1", GMOCK_PP_NARG0(x));
+  EXPECT_EXPANSION("2", GMOCK_PP_NARG0(x, y));
+}
+
+TEST(Macros, Comma) {
+  EXPECT_EXPANSION("0", GMOCK_PP_HAS_COMMA());
+  EXPECT_EXPANSION("1", GMOCK_PP_HAS_COMMA(, ));
+  EXPECT_EXPANSION("0", GMOCK_PP_HAS_COMMA((, )));
+}
+
+TEST(Macros, IsEmpty) {
+  EXPECT_EXPANSION("1", GMOCK_PP_IS_EMPTY());
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_EMPTY(, ));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_EMPTY(a));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_EMPTY(()));
+
+#define GMOCK_PP_INTERNAL_IS_EMPTY_TEST_1
+  EXPECT_EXPANSION("1", GMOCK_PP_IS_EMPTY(GMOCK_PP_INTERNAL_IS_EMPTY_TEST_1));
+}
+
+TEST(Macros, If) {
+  EXPECT_EXPANSION("1", GMOCK_PP_IF(1, 1, 2));
+  EXPECT_EXPANSION("2", GMOCK_PP_IF(0, 1, 2));
+}
+
+TEST(Macros, HeadTail) {
+  EXPECT_EXPANSION("1", GMOCK_PP_HEAD(1));
+  EXPECT_EXPANSION("1", GMOCK_PP_HEAD(1, 2));
+  EXPECT_EXPANSION("1", GMOCK_PP_HEAD(1, 2, 3));
+
+  EXPECT_EXPANSION("", GMOCK_PP_TAIL(1));
+  EXPECT_EXPANSION("2", GMOCK_PP_TAIL(1, 2));
+  EXPECT_EXPANSION("2", GMOCK_PP_HEAD(GMOCK_PP_TAIL(1, 2, 3)));
+}
+
+TEST(Macros, Parentheses) {
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_BEGIN_PARENS(sss));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_BEGIN_PARENS(sss()));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_BEGIN_PARENS(sss() sss));
+  EXPECT_EXPANSION("1", GMOCK_PP_IS_BEGIN_PARENS((sss)));
+  EXPECT_EXPANSION("1", GMOCK_PP_IS_BEGIN_PARENS((sss)ss));
+
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_ENCLOSED_PARENS(sss));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_ENCLOSED_PARENS(sss()));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_ENCLOSED_PARENS(sss() sss));
+  EXPECT_EXPANSION("1", GMOCK_PP_IS_ENCLOSED_PARENS((sss)));
+  EXPECT_EXPANSION("0", GMOCK_PP_IS_ENCLOSED_PARENS((sss)ss));
+
+  EXPECT_EXPANSION("1 + 1", GMOCK_PP_REMOVE_PARENS((1 + 1)));
+}
+
+TEST(Macros, Increment) {
+  EXPECT_EXPANSION("1", GMOCK_PP_INC(0));
+  EXPECT_EXPANSION("2", GMOCK_PP_INC(1));
+  EXPECT_EXPANSION("3", GMOCK_PP_INC(2));
+  EXPECT_EXPANSION("4", GMOCK_PP_INC(3));
+  EXPECT_EXPANSION("5", GMOCK_PP_INC(4));
+
+  EXPECT_EXPANSION("16", GMOCK_PP_INC(15));
+}
+
+#define JOINER_CAT(a, b) a##b
+#define JOINER(_N, _Data, _Elem) JOINER_CAT(_Data, _N) = _Elem
+
+TEST(Macros, Repeat) {
+  EXPECT_EXPANSION("", GMOCK_PP_REPEAT(JOINER, X, 0));
+  EXPECT_EXPANSION("X0=", GMOCK_PP_REPEAT(JOINER, X, 1));
+  EXPECT_EXPANSION("X0= X1=", GMOCK_PP_REPEAT(JOINER, X, 2));
+  EXPECT_EXPANSION("X0= X1= X2=", GMOCK_PP_REPEAT(JOINER, X, 3));
+  EXPECT_EXPANSION("X0= X1= X2= X3=", GMOCK_PP_REPEAT(JOINER, X, 4));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4=", GMOCK_PP_REPEAT(JOINER, X, 5));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5=", GMOCK_PP_REPEAT(JOINER, X, 6));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6=",
+                   GMOCK_PP_REPEAT(JOINER, X, 7));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7=",
+                   GMOCK_PP_REPEAT(JOINER, X, 8));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8=",
+                   GMOCK_PP_REPEAT(JOINER, X, 9));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8= X9=",
+                   GMOCK_PP_REPEAT(JOINER, X, 10));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10=",
+                   GMOCK_PP_REPEAT(JOINER, X, 11));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10= X11=",
+                   GMOCK_PP_REPEAT(JOINER, X, 12));
+  EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10= X11= X12=",
+                   GMOCK_PP_REPEAT(JOINER, X, 13));
+  EXPECT_EXPANSION(
+      "X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10= X11= X12= X13=",
+      GMOCK_PP_REPEAT(JOINER, X, 14));
+  EXPECT_EXPANSION(
+      "X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10= X11= X12= X13= X14=",
+      GMOCK_PP_REPEAT(JOINER, X, 15));
+}
+TEST(Macros, ForEach) {
+  EXPECT_EXPANSION("", GMOCK_PP_FOR_EACH(JOINER, X, ()));
+  EXPECT_EXPANSION("X0=a", GMOCK_PP_FOR_EACH(JOINER, X, (a)));
+  EXPECT_EXPANSION("X0=a X1=b", GMOCK_PP_FOR_EACH(JOINER, X, (a, b)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c", GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c X3=d",
+                   GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e",
+                   GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e X5=f",
+                   GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e X5=f X6=g",
+                   GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h",
+                   GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h)));
+  EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i",
+                   GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i)));
+  EXPECT_EXPANSION(
+      "X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j",
+      GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j)));
+  EXPECT_EXPANSION(
+      "X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k",
+      GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j, k)));
+  EXPECT_EXPANSION(
+      "X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k X11=l",
+      GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j, k, l)));
+  EXPECT_EXPANSION(
+      "X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k X11=l X12=m",
+      GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j, k, l, m)));
+  EXPECT_EXPANSION(
+      "X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k X11=l X12=m "
+      "X13=n",
+      GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j, k, l, m, n)));
+  EXPECT_EXPANSION(
+      "X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k X11=l X12=m "
+      "X13=n X14=o",
+      GMOCK_PP_FOR_EACH(JOINER, X,
+                        (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)));
+}
+
+}  // namespace
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-pp_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-pp_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7387d3989974bc22cbe268676f0f709ce6eb965e
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-pp_test.cc
@@ -0,0 +1,73 @@
+#include "gmock/internal/gmock-pp.h"
+
+// Static assertions.
+namespace testing {
+namespace internal {
+namespace gmockpp {
+
+static_assert(GMOCK_PP_CAT(1, 4) == 14, "");
+static_assert(GMOCK_PP_INTERNAL_INTERNAL_16TH(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
+                                              12, 13, 14, 15, 16, 17, 18) == 16,
+              "");
+static_assert(GMOCK_PP_NARG() == 1, "");
+static_assert(GMOCK_PP_NARG(x) == 1, "");
+static_assert(GMOCK_PP_NARG(x, y) == 2, "");
+static_assert(GMOCK_PP_NARG(x, y, z) == 3, "");
+static_assert(GMOCK_PP_NARG(x, y, z, w) == 4, "");
+static_assert(!GMOCK_PP_HAS_COMMA(), "");
+static_assert(GMOCK_PP_HAS_COMMA(b, ), "");
+static_assert(!GMOCK_PP_HAS_COMMA((, )), "");
+static_assert(!GMOCK_PP_IS_EMPTY(, ), "");
+static_assert(!GMOCK_PP_IS_EMPTY(a), "");
+static_assert(!GMOCK_PP_IS_EMPTY(()), "");
+static_assert(GMOCK_PP_IF(1, 1, 2) == 1, "");
+static_assert(GMOCK_PP_IF(0, 1, 2) == 2, "");
+static_assert(GMOCK_PP_NARG0(x) == 1, "");
+static_assert(GMOCK_PP_NARG0(x, y) == 2, "");
+static_assert(GMOCK_PP_HEAD(1) == 1, "");
+static_assert(GMOCK_PP_HEAD(1, 2) == 1, "");
+static_assert(GMOCK_PP_HEAD(1, 2, 3) == 1, "");
+static_assert(GMOCK_PP_TAIL(1, 2) == 2, "");
+static_assert(GMOCK_PP_HEAD(GMOCK_PP_TAIL(1, 2, 3)) == 2, "");
+static_assert(!GMOCK_PP_IS_BEGIN_PARENS(sss), "");
+static_assert(!GMOCK_PP_IS_BEGIN_PARENS(sss()), "");
+static_assert(!GMOCK_PP_IS_BEGIN_PARENS(sss() sss), "");
+static_assert(GMOCK_PP_IS_BEGIN_PARENS((sss)), "");
+static_assert(GMOCK_PP_IS_BEGIN_PARENS((sss)ss), "");
+static_assert(!GMOCK_PP_IS_ENCLOSED_PARENS(sss), "");
+static_assert(!GMOCK_PP_IS_ENCLOSED_PARENS(sss()), "");
+static_assert(!GMOCK_PP_IS_ENCLOSED_PARENS(sss() sss), "");
+static_assert(!GMOCK_PP_IS_ENCLOSED_PARENS((sss)ss), "");
+static_assert(GMOCK_PP_REMOVE_PARENS((1 + 1)) * 2 == 3, "");
+static_assert(GMOCK_PP_INC(4) == 5, "");
+
+template <class... Args>
+struct Test {
+  static constexpr int kArgs = sizeof...(Args);
+};
+#define GMOCK_PP_INTERNAL_TYPE_TEST(_i, _Data, _element) \
+  GMOCK_PP_COMMA_IF(_i) _element
+static_assert(Test<GMOCK_PP_FOR_EACH(GMOCK_PP_INTERNAL_TYPE_TEST, ~,
+                                     (int, float, double, char))>::kArgs == 4,
+              "");
+#define GMOCK_PP_INTERNAL_VAR_TEST_1(_x) 1
+#define GMOCK_PP_INTERNAL_VAR_TEST_2(_x, _y) 2
+#define GMOCK_PP_INTERNAL_VAR_TEST_3(_x, _y, _z) 3
+
+#define GMOCK_PP_INTERNAL_VAR_TEST(...) \
+  GMOCK_PP_VARIADIC_CALL(GMOCK_PP_INTERNAL_VAR_TEST_, __VA_ARGS__)
+static_assert(GMOCK_PP_INTERNAL_VAR_TEST(x, y) == 2, "");
+static_assert(GMOCK_PP_INTERNAL_VAR_TEST(silly) == 1, "");
+static_assert(GMOCK_PP_INTERNAL_VAR_TEST(x, y, z) == 3, "");
+
+// TODO(iserna): The following asserts fail in --config=lexan.
+#define GMOCK_PP_INTERNAL_IS_EMPTY_TEST_1
+static_assert(GMOCK_PP_IS_EMPTY(GMOCK_PP_INTERNAL_IS_EMPTY_TEST_1), "");
+static_assert(GMOCK_PP_IS_EMPTY(), "");
+static_assert(GMOCK_PP_IS_ENCLOSED_PARENS((sss)), "");
+static_assert(GMOCK_PP_IS_EMPTY(GMOCK_PP_TAIL(1)), "");
+static_assert(GMOCK_PP_NARG0() == 0, "");
+
+}  // namespace gmockpp
+}  // namespace internal
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googlemock/test/gmock-spec-builders_test.cc b/build/_deps/googletest-src/googlemock/test/gmock-spec-builders_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7bf5a8ad7bfa39ad017fdab9d2cb86e7174ddc4b
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock-spec-builders_test.cc
@@ -0,0 +1,2775 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests the spec builder syntax.
+
+#include "gmock/gmock-spec-builders.h"
+
+#include <memory>
+#include <ostream>  // NOLINT
+#include <sstream>
+#include <string>
+
+#include "gmock/gmock.h"
+#include "gmock/internal/gmock-port.h"
+#include "gtest/gtest.h"
+#include "gtest/gtest-spi.h"
+#include "gtest/internal/gtest-port.h"
+
+namespace testing {
+namespace internal {
+
+// Helper class for testing the Expectation class template.
+class ExpectationTester {
+ public:
+  // Sets the call count of the given expectation to the given number.
+  void SetCallCount(int n, ExpectationBase* exp) {
+    exp->call_count_ = n;
+  }
+};
+
+}  // namespace internal
+}  // namespace testing
+
+namespace {
+
+using testing::_;
+using testing::AnyNumber;
+using testing::AtLeast;
+using testing::AtMost;
+using testing::Between;
+using testing::Cardinality;
+using testing::CardinalityInterface;
+using testing::ContainsRegex;
+using testing::Const;
+using testing::DoAll;
+using testing::DoDefault;
+using testing::Eq;
+using testing::Expectation;
+using testing::ExpectationSet;
+using testing::GMOCK_FLAG(verbose);
+using testing::Gt;
+using testing::IgnoreResult;
+using testing::InSequence;
+using testing::Invoke;
+using testing::InvokeWithoutArgs;
+using testing::IsNotSubstring;
+using testing::IsSubstring;
+using testing::Lt;
+using testing::Message;
+using testing::Mock;
+using testing::NaggyMock;
+using testing::Ne;
+using testing::Return;
+using testing::SaveArg;
+using testing::Sequence;
+using testing::SetArgPointee;
+using testing::internal::ExpectationTester;
+using testing::internal::FormatFileLocation;
+using testing::internal::kAllow;
+using testing::internal::kErrorVerbosity;
+using testing::internal::kFail;
+using testing::internal::kInfoVerbosity;
+using testing::internal::kWarn;
+using testing::internal::kWarningVerbosity;
+
+#if GTEST_HAS_STREAM_REDIRECTION
+using testing::HasSubstr;
+using testing::internal::CaptureStdout;
+using testing::internal::GetCapturedStdout;
+#endif
+
+class Incomplete;
+
+class MockIncomplete {
+ public:
+  // This line verifies that a mock method can take a by-reference
+  // argument of an incomplete type.
+  MOCK_METHOD1(ByRefFunc, void(const Incomplete& x));
+};
+
+// Tells Google Mock how to print a value of type Incomplete.
+void PrintTo(const Incomplete& x, ::std::ostream* os);
+
+TEST(MockMethodTest, CanInstantiateWithIncompleteArgType) {
+  // Even though this mock class contains a mock method that takes
+  // by-reference an argument whose type is incomplete, we can still
+  // use the mock, as long as Google Mock knows how to print the
+  // argument.
+  MockIncomplete incomplete;
+  EXPECT_CALL(incomplete, ByRefFunc(_))
+      .Times(AnyNumber());
+}
+
+// The definition of the printer for the argument type doesn't have to
+// be visible where the mock is used.
+void PrintTo(const Incomplete& /* x */, ::std::ostream* os) {
+  *os << "incomplete";
+}
+
+class Result {};
+
+// A type that's not default constructible.
+class NonDefaultConstructible {
+ public:
+  explicit NonDefaultConstructible(int /* dummy */) {}
+};
+
+class MockA {
+ public:
+  MockA() {}
+
+  MOCK_METHOD1(DoA, void(int n));
+  MOCK_METHOD1(ReturnResult, Result(int n));
+  MOCK_METHOD0(ReturnNonDefaultConstructible, NonDefaultConstructible());
+  MOCK_METHOD2(Binary, bool(int x, int y));
+  MOCK_METHOD2(ReturnInt, int(int x, int y));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockA);
+};
+
+class MockB {
+ public:
+  MockB() {}
+
+  MOCK_CONST_METHOD0(DoB, int());  // NOLINT
+  MOCK_METHOD1(DoB, int(int n));  // NOLINT
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockB);
+};
+
+class ReferenceHoldingMock {
+ public:
+  ReferenceHoldingMock() {}
+
+  MOCK_METHOD1(AcceptReference, void(std::shared_ptr<MockA>*));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ReferenceHoldingMock);
+};
+
+// Tests that EXPECT_CALL and ON_CALL compile in a presence of macro
+// redefining a mock method name. This could happen, for example, when
+// the tested code #includes Win32 API headers which define many APIs
+// as macros, e.g. #define TextOut TextOutW.
+
+#define Method MethodW
+
+class CC {
+ public:
+  virtual ~CC() {}
+  virtual int Method() = 0;
+};
+class MockCC : public CC {
+ public:
+  MockCC() {}
+
+  MOCK_METHOD0(Method, int());
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockCC);
+};
+
+// Tests that a method with expanded name compiles.
+TEST(OnCallSyntaxTest, CompilesWithMethodNameExpandedFromMacro) {
+  MockCC cc;
+  ON_CALL(cc, Method());
+}
+
+// Tests that the method with expanded name not only compiles but runs
+// and returns a correct value, too.
+TEST(OnCallSyntaxTest, WorksWithMethodNameExpandedFromMacro) {
+  MockCC cc;
+  ON_CALL(cc, Method()).WillByDefault(Return(42));
+  EXPECT_EQ(42, cc.Method());
+}
+
+// Tests that a method with expanded name compiles.
+TEST(ExpectCallSyntaxTest, CompilesWithMethodNameExpandedFromMacro) {
+  MockCC cc;
+  EXPECT_CALL(cc, Method());
+  cc.Method();
+}
+
+// Tests that it works, too.
+TEST(ExpectCallSyntaxTest, WorksWithMethodNameExpandedFromMacro) {
+  MockCC cc;
+  EXPECT_CALL(cc, Method()).WillOnce(Return(42));
+  EXPECT_EQ(42, cc.Method());
+}
+
+#undef Method  // Done with macro redefinition tests.
+
+// Tests that ON_CALL evaluates its arguments exactly once as promised
+// by Google Mock.
+TEST(OnCallSyntaxTest, EvaluatesFirstArgumentOnce) {
+  MockA a;
+  MockA* pa = &a;
+
+  ON_CALL(*pa++, DoA(_));
+  EXPECT_EQ(&a + 1, pa);
+}
+
+TEST(OnCallSyntaxTest, EvaluatesSecondArgumentOnce) {
+  MockA a;
+  int n = 0;
+
+  ON_CALL(a, DoA(n++));
+  EXPECT_EQ(1, n);
+}
+
+// Tests that the syntax of ON_CALL() is enforced at run time.
+
+TEST(OnCallSyntaxTest, WithIsOptional) {
+  MockA a;
+
+  ON_CALL(a, DoA(5))
+      .WillByDefault(Return());
+  ON_CALL(a, DoA(_))
+      .With(_)
+      .WillByDefault(Return());
+}
+
+TEST(OnCallSyntaxTest, WithCanAppearAtMostOnce) {
+  MockA a;
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    ON_CALL(a, ReturnResult(_))
+        .With(_)
+        .With(_)
+        .WillByDefault(Return(Result()));
+  }, ".With() cannot appear more than once in an ON_CALL()");
+}
+
+TEST(OnCallSyntaxTest, WillByDefaultIsMandatory) {
+  MockA a;
+
+  EXPECT_DEATH_IF_SUPPORTED({
+    ON_CALL(a, DoA(5));
+    a.DoA(5);
+  }, "");
+}
+
+TEST(OnCallSyntaxTest, WillByDefaultCanAppearAtMostOnce) {
+  MockA a;
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    ON_CALL(a, DoA(5))
+        .WillByDefault(Return())
+        .WillByDefault(Return());
+  }, ".WillByDefault() must appear exactly once in an ON_CALL()");
+}
+
+// Tests that EXPECT_CALL evaluates its arguments exactly once as
+// promised by Google Mock.
+TEST(ExpectCallSyntaxTest, EvaluatesFirstArgumentOnce) {
+  MockA a;
+  MockA* pa = &a;
+
+  EXPECT_CALL(*pa++, DoA(_));
+  a.DoA(0);
+  EXPECT_EQ(&a + 1, pa);
+}
+
+TEST(ExpectCallSyntaxTest, EvaluatesSecondArgumentOnce) {
+  MockA a;
+  int n = 0;
+
+  EXPECT_CALL(a, DoA(n++));
+  a.DoA(0);
+  EXPECT_EQ(1, n);
+}
+
+// Tests that the syntax of EXPECT_CALL() is enforced at run time.
+
+TEST(ExpectCallSyntaxTest, WithIsOptional) {
+  MockA a;
+
+  EXPECT_CALL(a, DoA(5))
+      .Times(0);
+  EXPECT_CALL(a, DoA(6))
+      .With(_)
+      .Times(0);
+}
+
+TEST(ExpectCallSyntaxTest, WithCanAppearAtMostOnce) {
+  MockA a;
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_CALL(a, DoA(6))
+        .With(_)
+        .With(_);
+  }, ".With() cannot appear more than once in an EXPECT_CALL()");
+
+  a.DoA(6);
+}
+
+TEST(ExpectCallSyntaxTest, WithMustBeFirstClause) {
+  MockA a;
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_CALL(a, DoA(1))
+        .Times(1)
+        .With(_);
+  }, ".With() must be the first clause in an EXPECT_CALL()");
+
+  a.DoA(1);
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_CALL(a, DoA(2))
+        .WillOnce(Return())
+        .With(_);
+  }, ".With() must be the first clause in an EXPECT_CALL()");
+
+  a.DoA(2);
+}
+
+TEST(ExpectCallSyntaxTest, TimesCanBeInferred) {
+  MockA a;
+
+  EXPECT_CALL(a, DoA(1))
+      .WillOnce(Return());
+
+  EXPECT_CALL(a, DoA(2))
+      .WillOnce(Return())
+      .WillRepeatedly(Return());
+
+  a.DoA(1);
+  a.DoA(2);
+  a.DoA(2);
+}
+
+TEST(ExpectCallSyntaxTest, TimesCanAppearAtMostOnce) {
+  MockA a;
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_CALL(a, DoA(1))
+        .Times(1)
+        .Times(2);
+  }, ".Times() cannot appear more than once in an EXPECT_CALL()");
+
+  a.DoA(1);
+  a.DoA(1);
+}
+
+TEST(ExpectCallSyntaxTest, TimesMustBeBeforeInSequence) {
+  MockA a;
+  Sequence s;
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_CALL(a, DoA(1))
+        .InSequence(s)
+        .Times(1);
+  }, ".Times() cannot appear after ");
+
+  a.DoA(1);
+}
+
+TEST(ExpectCallSyntaxTest, InSequenceIsOptional) {
+  MockA a;
+  Sequence s;
+
+  EXPECT_CALL(a, DoA(1));
+  EXPECT_CALL(a, DoA(2))
+      .InSequence(s);
+
+  a.DoA(1);
+  a.DoA(2);
+}
+
+TEST(ExpectCallSyntaxTest, InSequenceCanAppearMultipleTimes) {
+  MockA a;
+  Sequence s1, s2;
+
+  EXPECT_CALL(a, DoA(1))
+      .InSequence(s1, s2)
+      .InSequence(s1);
+
+  a.DoA(1);
+}
+
+TEST(ExpectCallSyntaxTest, InSequenceMustBeBeforeAfter) {
+  MockA a;
+  Sequence s;
+
+  Expectation e = EXPECT_CALL(a, DoA(1))
+      .Times(AnyNumber());
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_CALL(a, DoA(2))
+        .After(e)
+        .InSequence(s);
+  }, ".InSequence() cannot appear after ");
+
+  a.DoA(2);
+}
+
+TEST(ExpectCallSyntaxTest, InSequenceMustBeBeforeWillOnce) {
+  MockA a;
+  Sequence s;
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_CALL(a, DoA(1))
+        .WillOnce(Return())
+        .InSequence(s);
+  }, ".InSequence() cannot appear after ");
+
+  a.DoA(1);
+}
+
+TEST(ExpectCallSyntaxTest, AfterMustBeBeforeWillOnce) {
+  MockA a;
+
+  Expectation e = EXPECT_CALL(a, DoA(1));
+  EXPECT_NONFATAL_FAILURE({
+    EXPECT_CALL(a, DoA(2))
+        .WillOnce(Return())
+        .After(e);
+  }, ".After() cannot appear after ");
+
+  a.DoA(1);
+  a.DoA(2);
+}
+
+TEST(ExpectCallSyntaxTest, WillIsOptional) {
+  MockA a;
+
+  EXPECT_CALL(a, DoA(1));
+  EXPECT_CALL(a, DoA(2))
+      .WillOnce(Return());
+
+  a.DoA(1);
+  a.DoA(2);
+}
+
+TEST(ExpectCallSyntaxTest, WillCanAppearMultipleTimes) {
+  MockA a;
+
+  EXPECT_CALL(a, DoA(1))
+      .Times(AnyNumber())
+      .WillOnce(Return())
+      .WillOnce(Return())
+      .WillOnce(Return());
+}
+
+TEST(ExpectCallSyntaxTest, WillMustBeBeforeWillRepeatedly) {
+  MockA a;
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_CALL(a, DoA(1))
+        .WillRepeatedly(Return())
+        .WillOnce(Return());
+  }, ".WillOnce() cannot appear after ");
+
+  a.DoA(1);
+}
+
+TEST(ExpectCallSyntaxTest, WillRepeatedlyIsOptional) {
+  MockA a;
+
+  EXPECT_CALL(a, DoA(1))
+      .WillOnce(Return());
+  EXPECT_CALL(a, DoA(2))
+      .WillOnce(Return())
+      .WillRepeatedly(Return());
+
+  a.DoA(1);
+  a.DoA(2);
+  a.DoA(2);
+}
+
+TEST(ExpectCallSyntaxTest, WillRepeatedlyCannotAppearMultipleTimes) {
+  MockA a;
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_CALL(a, DoA(1))
+        .WillRepeatedly(Return())
+        .WillRepeatedly(Return());
+  }, ".WillRepeatedly() cannot appear more than once in an "
+     "EXPECT_CALL()");
+}
+
+TEST(ExpectCallSyntaxTest, WillRepeatedlyMustBeBeforeRetiresOnSaturation) {
+  MockA a;
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_CALL(a, DoA(1))
+        .RetiresOnSaturation()
+        .WillRepeatedly(Return());
+  }, ".WillRepeatedly() cannot appear after ");
+}
+
+TEST(ExpectCallSyntaxTest, RetiresOnSaturationIsOptional) {
+  MockA a;
+
+  EXPECT_CALL(a, DoA(1));
+  EXPECT_CALL(a, DoA(1))
+      .RetiresOnSaturation();
+
+  a.DoA(1);
+  a.DoA(1);
+}
+
+TEST(ExpectCallSyntaxTest, RetiresOnSaturationCannotAppearMultipleTimes) {
+  MockA a;
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_CALL(a, DoA(1))
+        .RetiresOnSaturation()
+        .RetiresOnSaturation();
+  }, ".RetiresOnSaturation() cannot appear more than once");
+
+  a.DoA(1);
+}
+
+TEST(ExpectCallSyntaxTest, DefaultCardinalityIsOnce) {
+  {
+    MockA a;
+    EXPECT_CALL(a, DoA(1));
+    a.DoA(1);
+  }
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    MockA a;
+    EXPECT_CALL(a, DoA(1));
+  }, "to be called once");
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    MockA a;
+    EXPECT_CALL(a, DoA(1));
+    a.DoA(1);
+    a.DoA(1);
+  }, "to be called once");
+}
+
+#if GTEST_HAS_STREAM_REDIRECTION
+
+// Tests that Google Mock doesn't print a warning when the number of
+// WillOnce() is adequate.
+TEST(ExpectCallSyntaxTest, DoesNotWarnOnAdequateActionCount) {
+  CaptureStdout();
+  {
+    MockB b;
+
+    // It's always fine to omit WillOnce() entirely.
+    EXPECT_CALL(b, DoB())
+        .Times(0);
+    EXPECT_CALL(b, DoB(1))
+        .Times(AtMost(1));
+    EXPECT_CALL(b, DoB(2))
+        .Times(1)
+        .WillRepeatedly(Return(1));
+
+    // It's fine for the number of WillOnce()s to equal the upper bound.
+    EXPECT_CALL(b, DoB(3))
+        .Times(Between(1, 2))
+        .WillOnce(Return(1))
+        .WillOnce(Return(2));
+
+    // It's fine for the number of WillOnce()s to be smaller than the
+    // upper bound when there is a WillRepeatedly().
+    EXPECT_CALL(b, DoB(4))
+        .Times(AtMost(3))
+        .WillOnce(Return(1))
+        .WillRepeatedly(Return(2));
+
+    // Satisfies the above expectations.
+    b.DoB(2);
+    b.DoB(3);
+  }
+  EXPECT_STREQ("", GetCapturedStdout().c_str());
+}
+
+// Tests that Google Mock warns on having too many actions in an
+// expectation compared to its cardinality.
+TEST(ExpectCallSyntaxTest, WarnsOnTooManyActions) {
+  CaptureStdout();
+  {
+    MockB b;
+
+    // Warns when the number of WillOnce()s is larger than the upper bound.
+    EXPECT_CALL(b, DoB())
+        .Times(0)
+        .WillOnce(Return(1));  // #1
+    EXPECT_CALL(b, DoB())
+        .Times(AtMost(1))
+        .WillOnce(Return(1))
+        .WillOnce(Return(2));  // #2
+    EXPECT_CALL(b, DoB(1))
+        .Times(1)
+        .WillOnce(Return(1))
+        .WillOnce(Return(2))
+        .RetiresOnSaturation();  // #3
+
+    // Warns when the number of WillOnce()s equals the upper bound and
+    // there is a WillRepeatedly().
+    EXPECT_CALL(b, DoB())
+        .Times(0)
+        .WillRepeatedly(Return(1));  // #4
+    EXPECT_CALL(b, DoB(2))
+        .Times(1)
+        .WillOnce(Return(1))
+        .WillRepeatedly(Return(2));  // #5
+
+    // Satisfies the above expectations.
+    b.DoB(1);
+    b.DoB(2);
+  }
+  const std::string output = GetCapturedStdout();
+  EXPECT_PRED_FORMAT2(
+      IsSubstring,
+      "Too many actions specified in EXPECT_CALL(b, DoB())...\n"
+      "Expected to be never called, but has 1 WillOnce().",
+      output);  // #1
+  EXPECT_PRED_FORMAT2(
+      IsSubstring,
+      "Too many actions specified in EXPECT_CALL(b, DoB())...\n"
+      "Expected to be called at most once, "
+      "but has 2 WillOnce()s.",
+      output);  // #2
+  EXPECT_PRED_FORMAT2(
+      IsSubstring,
+      "Too many actions specified in EXPECT_CALL(b, DoB(1))...\n"
+      "Expected to be called once, but has 2 WillOnce()s.",
+      output);  // #3
+  EXPECT_PRED_FORMAT2(
+      IsSubstring,
+      "Too many actions specified in EXPECT_CALL(b, DoB())...\n"
+      "Expected to be never called, but has 0 WillOnce()s "
+      "and a WillRepeatedly().",
+      output);  // #4
+  EXPECT_PRED_FORMAT2(
+      IsSubstring,
+      "Too many actions specified in EXPECT_CALL(b, DoB(2))...\n"
+      "Expected to be called once, but has 1 WillOnce() "
+      "and a WillRepeatedly().",
+      output);  // #5
+}
+
+// Tests that Google Mock warns on having too few actions in an
+// expectation compared to its cardinality.
+TEST(ExpectCallSyntaxTest, WarnsOnTooFewActions) {
+  MockB b;
+
+  EXPECT_CALL(b, DoB())
+      .Times(Between(2, 3))
+      .WillOnce(Return(1));
+
+  CaptureStdout();
+  b.DoB();
+  const std::string output = GetCapturedStdout();
+  EXPECT_PRED_FORMAT2(
+      IsSubstring,
+      "Too few actions specified in EXPECT_CALL(b, DoB())...\n"
+      "Expected to be called between 2 and 3 times, "
+      "but has only 1 WillOnce().",
+      output);
+  b.DoB();
+}
+
+TEST(ExpectCallSyntaxTest, WarningIsErrorWithFlag) {
+  int original_behavior = testing::GMOCK_FLAG(default_mock_behavior);
+
+  testing::GMOCK_FLAG(default_mock_behavior) = kAllow;
+  CaptureStdout();
+  {
+    MockA a;
+    a.DoA(0);
+  }
+  std::string output = GetCapturedStdout();
+  EXPECT_TRUE(output.empty()) << output;
+
+  testing::GMOCK_FLAG(default_mock_behavior) = kWarn;
+  CaptureStdout();
+  {
+    MockA a;
+    a.DoA(0);
+  }
+  std::string warning_output = GetCapturedStdout();
+  EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", warning_output);
+  EXPECT_PRED_FORMAT2(IsSubstring, "Uninteresting mock function call",
+                      warning_output);
+
+  testing::GMOCK_FLAG(default_mock_behavior) = kFail;
+  EXPECT_NONFATAL_FAILURE({
+    MockA a;
+    a.DoA(0);
+  }, "Uninteresting mock function call");
+
+  // Out of bounds values are converted to kWarn
+  testing::GMOCK_FLAG(default_mock_behavior) = -1;
+  CaptureStdout();
+  {
+    MockA a;
+    a.DoA(0);
+  }
+  warning_output = GetCapturedStdout();
+  EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", warning_output);
+  EXPECT_PRED_FORMAT2(IsSubstring, "Uninteresting mock function call",
+                      warning_output);
+  testing::GMOCK_FLAG(default_mock_behavior) = 3;
+  CaptureStdout();
+  {
+    MockA a;
+    a.DoA(0);
+  }
+  warning_output = GetCapturedStdout();
+  EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", warning_output);
+  EXPECT_PRED_FORMAT2(IsSubstring, "Uninteresting mock function call",
+                      warning_output);
+
+  testing::GMOCK_FLAG(default_mock_behavior) = original_behavior;
+}
+
+#endif  // GTEST_HAS_STREAM_REDIRECTION
+
+// Tests the semantics of ON_CALL().
+
+// Tests that the built-in default action is taken when no ON_CALL()
+// is specified.
+TEST(OnCallTest, TakesBuiltInDefaultActionWhenNoOnCall) {
+  MockB b;
+  EXPECT_CALL(b, DoB());
+
+  EXPECT_EQ(0, b.DoB());
+}
+
+// Tests that the built-in default action is taken when no ON_CALL()
+// matches the invocation.
+TEST(OnCallTest, TakesBuiltInDefaultActionWhenNoOnCallMatches) {
+  MockB b;
+  ON_CALL(b, DoB(1))
+      .WillByDefault(Return(1));
+  EXPECT_CALL(b, DoB(_));
+
+  EXPECT_EQ(0, b.DoB(2));
+}
+
+// Tests that the last matching ON_CALL() action is taken.
+TEST(OnCallTest, PicksLastMatchingOnCall) {
+  MockB b;
+  ON_CALL(b, DoB(_))
+      .WillByDefault(Return(3));
+  ON_CALL(b, DoB(2))
+      .WillByDefault(Return(2));
+  ON_CALL(b, DoB(1))
+      .WillByDefault(Return(1));
+  EXPECT_CALL(b, DoB(_));
+
+  EXPECT_EQ(2, b.DoB(2));
+}
+
+// Tests the semantics of EXPECT_CALL().
+
+// Tests that any call is allowed when no EXPECT_CALL() is specified.
+TEST(ExpectCallTest, AllowsAnyCallWhenNoSpec) {
+  MockB b;
+  EXPECT_CALL(b, DoB());
+  // There is no expectation on DoB(int).
+
+  b.DoB();
+
+  // DoB(int) can be called any number of times.
+  b.DoB(1);
+  b.DoB(2);
+}
+
+// Tests that the last matching EXPECT_CALL() fires.
+TEST(ExpectCallTest, PicksLastMatchingExpectCall) {
+  MockB b;
+  EXPECT_CALL(b, DoB(_))
+      .WillRepeatedly(Return(2));
+  EXPECT_CALL(b, DoB(1))
+      .WillRepeatedly(Return(1));
+
+  EXPECT_EQ(1, b.DoB(1));
+}
+
+// Tests lower-bound violation.
+TEST(ExpectCallTest, CatchesTooFewCalls) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    MockB b;
+    EXPECT_CALL(b, DoB(5))
+        .Times(AtLeast(2));
+
+    b.DoB(5);
+  }, "Actual function call count doesn't match EXPECT_CALL(b, DoB(5))...\n"
+     "         Expected: to be called at least twice\n"
+     "           Actual: called once - unsatisfied and active");
+}
+
+// Tests that the cardinality can be inferred when no Times(...) is
+// specified.
+TEST(ExpectCallTest, InfersCardinalityWhenThereIsNoWillRepeatedly) {
+  {
+    MockB b;
+    EXPECT_CALL(b, DoB())
+        .WillOnce(Return(1))
+        .WillOnce(Return(2));
+
+    EXPECT_EQ(1, b.DoB());
+    EXPECT_EQ(2, b.DoB());
+  }
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    MockB b;
+    EXPECT_CALL(b, DoB())
+        .WillOnce(Return(1))
+        .WillOnce(Return(2));
+
+    EXPECT_EQ(1, b.DoB());
+  }, "to be called twice");
+
+  {  // NOLINT
+    MockB b;
+    EXPECT_CALL(b, DoB())
+        .WillOnce(Return(1))
+        .WillOnce(Return(2));
+
+    EXPECT_EQ(1, b.DoB());
+    EXPECT_EQ(2, b.DoB());
+    EXPECT_NONFATAL_FAILURE(b.DoB(), "to be called twice");
+  }
+}
+
+TEST(ExpectCallTest, InfersCardinality1WhenThereIsWillRepeatedly) {
+  {
+    MockB b;
+    EXPECT_CALL(b, DoB())
+        .WillOnce(Return(1))
+        .WillRepeatedly(Return(2));
+
+    EXPECT_EQ(1, b.DoB());
+  }
+
+  {  // NOLINT
+    MockB b;
+    EXPECT_CALL(b, DoB())
+        .WillOnce(Return(1))
+        .WillRepeatedly(Return(2));
+
+    EXPECT_EQ(1, b.DoB());
+    EXPECT_EQ(2, b.DoB());
+    EXPECT_EQ(2, b.DoB());
+  }
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    MockB b;
+    EXPECT_CALL(b, DoB())
+        .WillOnce(Return(1))
+        .WillRepeatedly(Return(2));
+  }, "to be called at least once");
+}
+
+// Tests that the n-th action is taken for the n-th matching
+// invocation.
+TEST(ExpectCallTest, NthMatchTakesNthAction) {
+  MockB b;
+  EXPECT_CALL(b, DoB())
+      .WillOnce(Return(1))
+      .WillOnce(Return(2))
+      .WillOnce(Return(3));
+
+  EXPECT_EQ(1, b.DoB());
+  EXPECT_EQ(2, b.DoB());
+  EXPECT_EQ(3, b.DoB());
+}
+
+// Tests that the WillRepeatedly() action is taken when the WillOnce(...)
+// list is exhausted.
+TEST(ExpectCallTest, TakesRepeatedActionWhenWillListIsExhausted) {
+  MockB b;
+  EXPECT_CALL(b, DoB())
+      .WillOnce(Return(1))
+      .WillRepeatedly(Return(2));
+
+  EXPECT_EQ(1, b.DoB());
+  EXPECT_EQ(2, b.DoB());
+  EXPECT_EQ(2, b.DoB());
+}
+
+#if GTEST_HAS_STREAM_REDIRECTION
+
+// Tests that the default action is taken when the WillOnce(...) list is
+// exhausted and there is no WillRepeatedly().
+TEST(ExpectCallTest, TakesDefaultActionWhenWillListIsExhausted) {
+  MockB b;
+  EXPECT_CALL(b, DoB(_))
+      .Times(1);
+  EXPECT_CALL(b, DoB())
+      .Times(AnyNumber())
+      .WillOnce(Return(1))
+      .WillOnce(Return(2));
+
+  CaptureStdout();
+  EXPECT_EQ(0, b.DoB(1));  // Shouldn't generate a warning as the
+                           // expectation has no action clause at all.
+  EXPECT_EQ(1, b.DoB());
+  EXPECT_EQ(2, b.DoB());
+  const std::string output1 = GetCapturedStdout();
+  EXPECT_STREQ("", output1.c_str());
+
+  CaptureStdout();
+  EXPECT_EQ(0, b.DoB());
+  EXPECT_EQ(0, b.DoB());
+  const std::string output2 = GetCapturedStdout();
+  EXPECT_THAT(output2.c_str(),
+              HasSubstr("Actions ran out in EXPECT_CALL(b, DoB())...\n"
+                        "Called 3 times, but only 2 WillOnce()s are specified"
+                        " - returning default value."));
+  EXPECT_THAT(output2.c_str(),
+              HasSubstr("Actions ran out in EXPECT_CALL(b, DoB())...\n"
+                        "Called 4 times, but only 2 WillOnce()s are specified"
+                        " - returning default value."));
+}
+
+TEST(FunctionMockerMessageTest, ReportsExpectCallLocationForExhausedActions) {
+  MockB b;
+  std::string expect_call_location = FormatFileLocation(__FILE__, __LINE__ + 1);
+  EXPECT_CALL(b, DoB()).Times(AnyNumber()).WillOnce(Return(1));
+
+  EXPECT_EQ(1, b.DoB());
+
+  CaptureStdout();
+  EXPECT_EQ(0, b.DoB());
+  const std::string output = GetCapturedStdout();
+  // The warning message should contain the call location.
+  EXPECT_PRED_FORMAT2(IsSubstring, expect_call_location, output);
+}
+
+TEST(FunctionMockerMessageTest,
+     ReportsDefaultActionLocationOfUninterestingCallsForNaggyMock) {
+  std::string on_call_location;
+  CaptureStdout();
+  {
+    NaggyMock<MockB> b;
+    on_call_location = FormatFileLocation(__FILE__, __LINE__ + 1);
+    ON_CALL(b, DoB(_)).WillByDefault(Return(0));
+    b.DoB(0);
+  }
+  EXPECT_PRED_FORMAT2(IsSubstring, on_call_location, GetCapturedStdout());
+}
+
+#endif  // GTEST_HAS_STREAM_REDIRECTION
+
+// Tests that an uninteresting call performs the default action.
+TEST(UninterestingCallTest, DoesDefaultAction) {
+  // When there is an ON_CALL() statement, the action specified by it
+  // should be taken.
+  MockA a;
+  ON_CALL(a, Binary(_, _))
+      .WillByDefault(Return(true));
+  EXPECT_TRUE(a.Binary(1, 2));
+
+  // When there is no ON_CALL(), the default value for the return type
+  // should be returned.
+  MockB b;
+  EXPECT_EQ(0, b.DoB());
+}
+
+// Tests that an unexpected call performs the default action.
+TEST(UnexpectedCallTest, DoesDefaultAction) {
+  // When there is an ON_CALL() statement, the action specified by it
+  // should be taken.
+  MockA a;
+  ON_CALL(a, Binary(_, _))
+      .WillByDefault(Return(true));
+  EXPECT_CALL(a, Binary(0, 0));
+  a.Binary(0, 0);
+  bool result = false;
+  EXPECT_NONFATAL_FAILURE(result = a.Binary(1, 2),
+                          "Unexpected mock function call");
+  EXPECT_TRUE(result);
+
+  // When there is no ON_CALL(), the default value for the return type
+  // should be returned.
+  MockB b;
+  EXPECT_CALL(b, DoB(0))
+      .Times(0);
+  int n = -1;
+  EXPECT_NONFATAL_FAILURE(n = b.DoB(1),
+                          "Unexpected mock function call");
+  EXPECT_EQ(0, n);
+}
+
+// Tests that when an unexpected void function generates the right
+// failure message.
+TEST(UnexpectedCallTest, GeneratesFailureForVoidFunction) {
+  // First, tests the message when there is only one EXPECT_CALL().
+  MockA a1;
+  EXPECT_CALL(a1, DoA(1));
+  a1.DoA(1);
+  // Ideally we should match the failure message against a regex, but
+  // EXPECT_NONFATAL_FAILURE doesn't support that, so we test for
+  // multiple sub-strings instead.
+  EXPECT_NONFATAL_FAILURE(
+      a1.DoA(9),
+      "Unexpected mock function call - returning directly.\n"
+      "    Function call: DoA(9)\n"
+      "Google Mock tried the following 1 expectation, but it didn't match:");
+  EXPECT_NONFATAL_FAILURE(
+      a1.DoA(9),
+      "  Expected arg #0: is equal to 1\n"
+      "           Actual: 9\n"
+      "         Expected: to be called once\n"
+      "           Actual: called once - saturated and active");
+
+  // Next, tests the message when there are more than one EXPECT_CALL().
+  MockA a2;
+  EXPECT_CALL(a2, DoA(1));
+  EXPECT_CALL(a2, DoA(3));
+  a2.DoA(1);
+  EXPECT_NONFATAL_FAILURE(
+      a2.DoA(2),
+      "Unexpected mock function call - returning directly.\n"
+      "    Function call: DoA(2)\n"
+      "Google Mock tried the following 2 expectations, but none matched:");
+  EXPECT_NONFATAL_FAILURE(
+      a2.DoA(2),
+      "tried expectation #0: EXPECT_CALL(a2, DoA(1))...\n"
+      "  Expected arg #0: is equal to 1\n"
+      "           Actual: 2\n"
+      "         Expected: to be called once\n"
+      "           Actual: called once - saturated and active");
+  EXPECT_NONFATAL_FAILURE(
+      a2.DoA(2),
+      "tried expectation #1: EXPECT_CALL(a2, DoA(3))...\n"
+      "  Expected arg #0: is equal to 3\n"
+      "           Actual: 2\n"
+      "         Expected: to be called once\n"
+      "           Actual: never called - unsatisfied and active");
+  a2.DoA(3);
+}
+
+// Tests that an unexpected non-void function generates the right
+// failure message.
+TEST(UnexpectedCallTest, GeneartesFailureForNonVoidFunction) {
+  MockB b1;
+  EXPECT_CALL(b1, DoB(1));
+  b1.DoB(1);
+  EXPECT_NONFATAL_FAILURE(
+      b1.DoB(2),
+      "Unexpected mock function call - returning default value.\n"
+      "    Function call: DoB(2)\n"
+      "          Returns: 0\n"
+      "Google Mock tried the following 1 expectation, but it didn't match:");
+  EXPECT_NONFATAL_FAILURE(
+      b1.DoB(2),
+      "  Expected arg #0: is equal to 1\n"
+      "           Actual: 2\n"
+      "         Expected: to be called once\n"
+      "           Actual: called once - saturated and active");
+}
+
+// Tests that Google Mock explains that an retired expectation doesn't
+// match the call.
+TEST(UnexpectedCallTest, RetiredExpectation) {
+  MockB b;
+  EXPECT_CALL(b, DoB(1))
+      .RetiresOnSaturation();
+
+  b.DoB(1);
+  EXPECT_NONFATAL_FAILURE(
+      b.DoB(1),
+      "         Expected: the expectation is active\n"
+      "           Actual: it is retired");
+}
+
+// Tests that Google Mock explains that an expectation that doesn't
+// match the arguments doesn't match the call.
+TEST(UnexpectedCallTest, UnmatchedArguments) {
+  MockB b;
+  EXPECT_CALL(b, DoB(1));
+
+  EXPECT_NONFATAL_FAILURE(
+      b.DoB(2),
+      "  Expected arg #0: is equal to 1\n"
+      "           Actual: 2\n");
+  b.DoB(1);
+}
+
+// Tests that Google Mock explains that an expectation with
+// unsatisfied pre-requisites doesn't match the call.
+TEST(UnexpectedCallTest, UnsatisifiedPrerequisites) {
+  Sequence s1, s2;
+  MockB b;
+  EXPECT_CALL(b, DoB(1))
+      .InSequence(s1);
+  EXPECT_CALL(b, DoB(2))
+      .Times(AnyNumber())
+      .InSequence(s1);
+  EXPECT_CALL(b, DoB(3))
+      .InSequence(s2);
+  EXPECT_CALL(b, DoB(4))
+      .InSequence(s1, s2);
+
+  ::testing::TestPartResultArray failures;
+  {
+    ::testing::ScopedFakeTestPartResultReporter reporter(&failures);
+    b.DoB(4);
+    // Now 'failures' contains the Google Test failures generated by
+    // the above statement.
+  }
+
+  // There should be one non-fatal failure.
+  ASSERT_EQ(1, failures.size());
+  const ::testing::TestPartResult& r = failures.GetTestPartResult(0);
+  EXPECT_EQ(::testing::TestPartResult::kNonFatalFailure, r.type());
+
+  // Verifies that the failure message contains the two unsatisfied
+  // pre-requisites but not the satisfied one.
+#if GTEST_USES_PCRE
+  EXPECT_THAT(r.message(), ContainsRegex(
+      // PCRE has trouble using (.|\n) to match any character, but
+      // supports the (?s) prefix for using . to match any character.
+      "(?s)the following immediate pre-requisites are not satisfied:\n"
+      ".*: pre-requisite #0\n"
+      ".*: pre-requisite #1"));
+#elif GTEST_USES_POSIX_RE
+  EXPECT_THAT(r.message(), ContainsRegex(
+      // POSIX RE doesn't understand the (?s) prefix, but has no trouble
+      // with (.|\n).
+      "the following immediate pre-requisites are not satisfied:\n"
+      "(.|\n)*: pre-requisite #0\n"
+      "(.|\n)*: pre-requisite #1"));
+#else
+  // We can only use Google Test's own simple regex.
+  EXPECT_THAT(r.message(), ContainsRegex(
+      "the following immediate pre-requisites are not satisfied:"));
+  EXPECT_THAT(r.message(), ContainsRegex(": pre-requisite #0"));
+  EXPECT_THAT(r.message(), ContainsRegex(": pre-requisite #1"));
+#endif  // GTEST_USES_PCRE
+
+  b.DoB(1);
+  b.DoB(3);
+  b.DoB(4);
+}
+
+TEST(UndefinedReturnValueTest,
+     ReturnValueIsMandatoryWhenNotDefaultConstructible) {
+  MockA a;
+  // FIXME: We should really verify the output message,
+  // but we cannot yet due to that EXPECT_DEATH only captures stderr
+  // while Google Mock logs to stdout.
+#if GTEST_HAS_EXCEPTIONS
+  EXPECT_ANY_THROW(a.ReturnNonDefaultConstructible());
+#else
+  EXPECT_DEATH_IF_SUPPORTED(a.ReturnNonDefaultConstructible(), "");
+#endif
+}
+
+// Tests that an excessive call (one whose arguments match the
+// matchers but is called too many times) performs the default action.
+TEST(ExcessiveCallTest, DoesDefaultAction) {
+  // When there is an ON_CALL() statement, the action specified by it
+  // should be taken.
+  MockA a;
+  ON_CALL(a, Binary(_, _))
+      .WillByDefault(Return(true));
+  EXPECT_CALL(a, Binary(0, 0));
+  a.Binary(0, 0);
+  bool result = false;
+  EXPECT_NONFATAL_FAILURE(result = a.Binary(0, 0),
+                          "Mock function called more times than expected");
+  EXPECT_TRUE(result);
+
+  // When there is no ON_CALL(), the default value for the return type
+  // should be returned.
+  MockB b;
+  EXPECT_CALL(b, DoB(0))
+      .Times(0);
+  int n = -1;
+  EXPECT_NONFATAL_FAILURE(n = b.DoB(0),
+                          "Mock function called more times than expected");
+  EXPECT_EQ(0, n);
+}
+
+// Tests that when a void function is called too many times,
+// the failure message contains the argument values.
+TEST(ExcessiveCallTest, GeneratesFailureForVoidFunction) {
+  MockA a;
+  EXPECT_CALL(a, DoA(_))
+      .Times(0);
+  EXPECT_NONFATAL_FAILURE(
+      a.DoA(9),
+      "Mock function called more times than expected - returning directly.\n"
+      "    Function call: DoA(9)\n"
+      "         Expected: to be never called\n"
+      "           Actual: called once - over-saturated and active");
+}
+
+// Tests that when a non-void function is called too many times, the
+// failure message contains the argument values and the return value.
+TEST(ExcessiveCallTest, GeneratesFailureForNonVoidFunction) {
+  MockB b;
+  EXPECT_CALL(b, DoB(_));
+  b.DoB(1);
+  EXPECT_NONFATAL_FAILURE(
+      b.DoB(2),
+      "Mock function called more times than expected - "
+      "returning default value.\n"
+      "    Function call: DoB(2)\n"
+      "          Returns: 0\n"
+      "         Expected: to be called once\n"
+      "           Actual: called twice - over-saturated and active");
+}
+
+// Tests using sequences.
+
+TEST(InSequenceTest, AllExpectationInScopeAreInSequence) {
+  MockA a;
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(a, DoA(1));
+    EXPECT_CALL(a, DoA(2));
+  }
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    a.DoA(2);
+  }, "Unexpected mock function call");
+
+  a.DoA(1);
+  a.DoA(2);
+}
+
+TEST(InSequenceTest, NestedInSequence) {
+  MockA a;
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(a, DoA(1));
+    {
+      InSequence dummy2;
+
+      EXPECT_CALL(a, DoA(2));
+      EXPECT_CALL(a, DoA(3));
+    }
+  }
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    a.DoA(1);
+    a.DoA(3);
+  }, "Unexpected mock function call");
+
+  a.DoA(2);
+  a.DoA(3);
+}
+
+TEST(InSequenceTest, ExpectationsOutOfScopeAreNotAffected) {
+  MockA a;
+  {
+    InSequence dummy;
+
+    EXPECT_CALL(a, DoA(1));
+    EXPECT_CALL(a, DoA(2));
+  }
+  EXPECT_CALL(a, DoA(3));
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    a.DoA(2);
+  }, "Unexpected mock function call");
+
+  a.DoA(3);
+  a.DoA(1);
+  a.DoA(2);
+}
+
+// Tests that any order is allowed when no sequence is used.
+TEST(SequenceTest, AnyOrderIsOkByDefault) {
+  {
+    MockA a;
+    MockB b;
+
+    EXPECT_CALL(a, DoA(1));
+    EXPECT_CALL(b, DoB())
+        .Times(AnyNumber());
+
+    a.DoA(1);
+    b.DoB();
+  }
+
+  {  // NOLINT
+    MockA a;
+    MockB b;
+
+    EXPECT_CALL(a, DoA(1));
+    EXPECT_CALL(b, DoB())
+        .Times(AnyNumber());
+
+    b.DoB();
+    a.DoA(1);
+  }
+}
+
+// Tests that the calls must be in strict order when a complete order
+// is specified.
+TEST(SequenceTest, CallsMustBeInStrictOrderWhenSaidSo1) {
+  MockA a;
+  ON_CALL(a, ReturnResult(_))
+      .WillByDefault(Return(Result()));
+
+  Sequence s;
+  EXPECT_CALL(a, ReturnResult(1))
+      .InSequence(s);
+  EXPECT_CALL(a, ReturnResult(2))
+      .InSequence(s);
+  EXPECT_CALL(a, ReturnResult(3))
+      .InSequence(s);
+
+  a.ReturnResult(1);
+
+  // May only be called after a.ReturnResult(2).
+  EXPECT_NONFATAL_FAILURE(a.ReturnResult(3), "Unexpected mock function call");
+
+  a.ReturnResult(2);
+  a.ReturnResult(3);
+}
+
+// Tests that the calls must be in strict order when a complete order
+// is specified.
+TEST(SequenceTest, CallsMustBeInStrictOrderWhenSaidSo2) {
+  MockA a;
+  ON_CALL(a, ReturnResult(_))
+      .WillByDefault(Return(Result()));
+
+  Sequence s;
+  EXPECT_CALL(a, ReturnResult(1))
+      .InSequence(s);
+  EXPECT_CALL(a, ReturnResult(2))
+      .InSequence(s);
+
+  // May only be called after a.ReturnResult(1).
+  EXPECT_NONFATAL_FAILURE(a.ReturnResult(2), "Unexpected mock function call");
+
+  a.ReturnResult(1);
+  a.ReturnResult(2);
+}
+
+// Tests specifying a DAG using multiple sequences.
+class PartialOrderTest : public testing::Test {
+ protected:
+  PartialOrderTest() {
+    ON_CALL(a_, ReturnResult(_))
+        .WillByDefault(Return(Result()));
+
+    // Specifies this partial ordering:
+    //
+    // a.ReturnResult(1) ==>
+    //                       a.ReturnResult(2) * n  ==>  a.ReturnResult(3)
+    // b.DoB() * 2       ==>
+    Sequence x, y;
+    EXPECT_CALL(a_, ReturnResult(1))
+        .InSequence(x);
+    EXPECT_CALL(b_, DoB())
+        .Times(2)
+        .InSequence(y);
+    EXPECT_CALL(a_, ReturnResult(2))
+        .Times(AnyNumber())
+        .InSequence(x, y);
+    EXPECT_CALL(a_, ReturnResult(3))
+        .InSequence(x);
+  }
+
+  MockA a_;
+  MockB b_;
+};
+
+TEST_F(PartialOrderTest, CallsMustConformToSpecifiedDag1) {
+  a_.ReturnResult(1);
+  b_.DoB();
+
+  // May only be called after the second DoB().
+  EXPECT_NONFATAL_FAILURE(a_.ReturnResult(2), "Unexpected mock function call");
+
+  b_.DoB();
+  a_.ReturnResult(3);
+}
+
+TEST_F(PartialOrderTest, CallsMustConformToSpecifiedDag2) {
+  // May only be called after ReturnResult(1).
+  EXPECT_NONFATAL_FAILURE(a_.ReturnResult(2), "Unexpected mock function call");
+
+  a_.ReturnResult(1);
+  b_.DoB();
+  b_.DoB();
+  a_.ReturnResult(3);
+}
+
+TEST_F(PartialOrderTest, CallsMustConformToSpecifiedDag3) {
+  // May only be called last.
+  EXPECT_NONFATAL_FAILURE(a_.ReturnResult(3), "Unexpected mock function call");
+
+  a_.ReturnResult(1);
+  b_.DoB();
+  b_.DoB();
+  a_.ReturnResult(3);
+}
+
+TEST_F(PartialOrderTest, CallsMustConformToSpecifiedDag4) {
+  a_.ReturnResult(1);
+  b_.DoB();
+  b_.DoB();
+  a_.ReturnResult(3);
+
+  // May only be called before ReturnResult(3).
+  EXPECT_NONFATAL_FAILURE(a_.ReturnResult(2), "Unexpected mock function call");
+}
+
+TEST(SequenceTest, Retirement) {
+  MockA a;
+  Sequence s;
+
+  EXPECT_CALL(a, DoA(1))
+      .InSequence(s);
+  EXPECT_CALL(a, DoA(_))
+      .InSequence(s)
+      .RetiresOnSaturation();
+  EXPECT_CALL(a, DoA(1))
+      .InSequence(s);
+
+  a.DoA(1);
+  a.DoA(2);
+  a.DoA(1);
+}
+
+// Tests Expectation.
+
+TEST(ExpectationTest, ConstrutorsWork) {
+  MockA a;
+  Expectation e1;  // Default ctor.
+
+  // Ctor from various forms of EXPECT_CALL.
+  Expectation e2 = EXPECT_CALL(a, DoA(2));
+  Expectation e3 = EXPECT_CALL(a, DoA(3)).With(_);
+  {
+    Sequence s;
+    Expectation e4 = EXPECT_CALL(a, DoA(4)).Times(1);
+    Expectation e5 = EXPECT_CALL(a, DoA(5)).InSequence(s);
+  }
+  Expectation e6 = EXPECT_CALL(a, DoA(6)).After(e2);
+  Expectation e7 = EXPECT_CALL(a, DoA(7)).WillOnce(Return());
+  Expectation e8 = EXPECT_CALL(a, DoA(8)).WillRepeatedly(Return());
+  Expectation e9 = EXPECT_CALL(a, DoA(9)).RetiresOnSaturation();
+
+  Expectation e10 = e2;  // Copy ctor.
+
+  EXPECT_THAT(e1, Ne(e2));
+  EXPECT_THAT(e2, Eq(e10));
+
+  a.DoA(2);
+  a.DoA(3);
+  a.DoA(4);
+  a.DoA(5);
+  a.DoA(6);
+  a.DoA(7);
+  a.DoA(8);
+  a.DoA(9);
+}
+
+TEST(ExpectationTest, AssignmentWorks) {
+  MockA a;
+  Expectation e1;
+  Expectation e2 = EXPECT_CALL(a, DoA(1));
+
+  EXPECT_THAT(e1, Ne(e2));
+
+  e1 = e2;
+  EXPECT_THAT(e1, Eq(e2));
+
+  a.DoA(1);
+}
+
+// Tests ExpectationSet.
+
+TEST(ExpectationSetTest, MemberTypesAreCorrect) {
+  ::testing::StaticAssertTypeEq<Expectation, ExpectationSet::value_type>();
+}
+
+TEST(ExpectationSetTest, ConstructorsWork) {
+  MockA a;
+
+  Expectation e1;
+  const Expectation e2;
+  ExpectationSet es1;  // Default ctor.
+  ExpectationSet es2 = EXPECT_CALL(a, DoA(1));  // Ctor from EXPECT_CALL.
+  ExpectationSet es3 = e1;  // Ctor from Expectation.
+  ExpectationSet es4(e1);   // Ctor from Expectation; alternative syntax.
+  ExpectationSet es5 = e2;  // Ctor from const Expectation.
+  ExpectationSet es6(e2);   // Ctor from const Expectation; alternative syntax.
+  ExpectationSet es7 = es2;  // Copy ctor.
+
+  EXPECT_EQ(0, es1.size());
+  EXPECT_EQ(1, es2.size());
+  EXPECT_EQ(1, es3.size());
+  EXPECT_EQ(1, es4.size());
+  EXPECT_EQ(1, es5.size());
+  EXPECT_EQ(1, es6.size());
+  EXPECT_EQ(1, es7.size());
+
+  EXPECT_THAT(es3, Ne(es2));
+  EXPECT_THAT(es4, Eq(es3));
+  EXPECT_THAT(es5, Eq(es4));
+  EXPECT_THAT(es6, Eq(es5));
+  EXPECT_THAT(es7, Eq(es2));
+  a.DoA(1);
+}
+
+TEST(ExpectationSetTest, AssignmentWorks) {
+  ExpectationSet es1;
+  ExpectationSet es2 = Expectation();
+
+  es1 = es2;
+  EXPECT_EQ(1, es1.size());
+  EXPECT_THAT(*(es1.begin()), Eq(Expectation()));
+  EXPECT_THAT(es1, Eq(es2));
+}
+
+TEST(ExpectationSetTest, InsertionWorks) {
+  ExpectationSet es1;
+  Expectation e1;
+  es1 += e1;
+  EXPECT_EQ(1, es1.size());
+  EXPECT_THAT(*(es1.begin()), Eq(e1));
+
+  MockA a;
+  Expectation e2 = EXPECT_CALL(a, DoA(1));
+  es1 += e2;
+  EXPECT_EQ(2, es1.size());
+
+  ExpectationSet::const_iterator it1 = es1.begin();
+  ExpectationSet::const_iterator it2 = it1;
+  ++it2;
+  EXPECT_TRUE(*it1 == e1 || *it2 == e1);  // e1 must be in the set.
+  EXPECT_TRUE(*it1 == e2 || *it2 == e2);  // e2 must be in the set too.
+  a.DoA(1);
+}
+
+TEST(ExpectationSetTest, SizeWorks) {
+  ExpectationSet es;
+  EXPECT_EQ(0, es.size());
+
+  es += Expectation();
+  EXPECT_EQ(1, es.size());
+
+  MockA a;
+  es += EXPECT_CALL(a, DoA(1));
+  EXPECT_EQ(2, es.size());
+
+  a.DoA(1);
+}
+
+TEST(ExpectationSetTest, IsEnumerable) {
+  ExpectationSet es;
+  EXPECT_TRUE(es.begin() == es.end());
+
+  es += Expectation();
+  ExpectationSet::const_iterator it = es.begin();
+  EXPECT_TRUE(it != es.end());
+  EXPECT_THAT(*it, Eq(Expectation()));
+  ++it;
+  EXPECT_TRUE(it== es.end());
+}
+
+// Tests the .After() clause.
+
+TEST(AfterTest, SucceedsWhenPartialOrderIsSatisfied) {
+  MockA a;
+  ExpectationSet es;
+  es += EXPECT_CALL(a, DoA(1));
+  es += EXPECT_CALL(a, DoA(2));
+  EXPECT_CALL(a, DoA(3))
+      .After(es);
+
+  a.DoA(1);
+  a.DoA(2);
+  a.DoA(3);
+}
+
+TEST(AfterTest, SucceedsWhenTotalOrderIsSatisfied) {
+  MockA a;
+  MockB b;
+  // The following also verifies that const Expectation objects work
+  // too.  Do not remove the const modifiers.
+  const Expectation e1 = EXPECT_CALL(a, DoA(1));
+  const Expectation e2 = EXPECT_CALL(b, DoB())
+      .Times(2)
+      .After(e1);
+  EXPECT_CALL(a, DoA(2)).After(e2);
+
+  a.DoA(1);
+  b.DoB();
+  b.DoB();
+  a.DoA(2);
+}
+
+// Calls must be in strict order when specified so using .After().
+TEST(AfterTest, CallsMustBeInStrictOrderWhenSpecifiedSo1) {
+  MockA a;
+  MockB b;
+
+  // Define ordering:
+  //   a.DoA(1) ==> b.DoB() ==> a.DoA(2)
+  Expectation e1 = EXPECT_CALL(a, DoA(1));
+  Expectation e2 = EXPECT_CALL(b, DoB())
+      .After(e1);
+  EXPECT_CALL(a, DoA(2))
+      .After(e2);
+
+  a.DoA(1);
+
+  // May only be called after DoB().
+  EXPECT_NONFATAL_FAILURE(a.DoA(2), "Unexpected mock function call");
+
+  b.DoB();
+  a.DoA(2);
+}
+
+// Calls must be in strict order when specified so using .After().
+TEST(AfterTest, CallsMustBeInStrictOrderWhenSpecifiedSo2) {
+  MockA a;
+  MockB b;
+
+  // Define ordering:
+  //   a.DoA(1) ==> b.DoB() * 2 ==> a.DoA(2)
+  Expectation e1 = EXPECT_CALL(a, DoA(1));
+  Expectation e2 = EXPECT_CALL(b, DoB())
+      .Times(2)
+      .After(e1);
+  EXPECT_CALL(a, DoA(2))
+      .After(e2);
+
+  a.DoA(1);
+  b.DoB();
+
+  // May only be called after the second DoB().
+  EXPECT_NONFATAL_FAILURE(a.DoA(2), "Unexpected mock function call");
+
+  b.DoB();
+  a.DoA(2);
+}
+
+// Calls must satisfy the partial order when specified so.
+TEST(AfterTest, CallsMustSatisfyPartialOrderWhenSpecifiedSo) {
+  MockA a;
+  ON_CALL(a, ReturnResult(_))
+      .WillByDefault(Return(Result()));
+
+  // Define ordering:
+  //   a.DoA(1) ==>
+  //   a.DoA(2) ==> a.ReturnResult(3)
+  Expectation e = EXPECT_CALL(a, DoA(1));
+  const ExpectationSet es = EXPECT_CALL(a, DoA(2));
+  EXPECT_CALL(a, ReturnResult(3))
+      .After(e, es);
+
+  // May only be called last.
+  EXPECT_NONFATAL_FAILURE(a.ReturnResult(3), "Unexpected mock function call");
+
+  a.DoA(2);
+  a.DoA(1);
+  a.ReturnResult(3);
+}
+
+// Calls must satisfy the partial order when specified so.
+TEST(AfterTest, CallsMustSatisfyPartialOrderWhenSpecifiedSo2) {
+  MockA a;
+
+  // Define ordering:
+  //   a.DoA(1) ==>
+  //   a.DoA(2) ==> a.DoA(3)
+  Expectation e = EXPECT_CALL(a, DoA(1));
+  const ExpectationSet es = EXPECT_CALL(a, DoA(2));
+  EXPECT_CALL(a, DoA(3))
+      .After(e, es);
+
+  a.DoA(2);
+
+  // May only be called last.
+  EXPECT_NONFATAL_FAILURE(a.DoA(3), "Unexpected mock function call");
+
+  a.DoA(1);
+  a.DoA(3);
+}
+
+// .After() can be combined with .InSequence().
+TEST(AfterTest, CanBeUsedWithInSequence) {
+  MockA a;
+  Sequence s;
+  Expectation e = EXPECT_CALL(a, DoA(1));
+  EXPECT_CALL(a, DoA(2)).InSequence(s);
+  EXPECT_CALL(a, DoA(3))
+      .InSequence(s)
+      .After(e);
+
+  a.DoA(1);
+
+  // May only be after DoA(2).
+  EXPECT_NONFATAL_FAILURE(a.DoA(3), "Unexpected mock function call");
+
+  a.DoA(2);
+  a.DoA(3);
+}
+
+// .After() can be called multiple times.
+TEST(AfterTest, CanBeCalledManyTimes) {
+  MockA a;
+  Expectation e1 = EXPECT_CALL(a, DoA(1));
+  Expectation e2 = EXPECT_CALL(a, DoA(2));
+  Expectation e3 = EXPECT_CALL(a, DoA(3));
+  EXPECT_CALL(a, DoA(4))
+      .After(e1)
+      .After(e2)
+      .After(e3);
+
+  a.DoA(3);
+  a.DoA(1);
+  a.DoA(2);
+  a.DoA(4);
+}
+
+// .After() accepts up to 5 arguments.
+TEST(AfterTest, AcceptsUpToFiveArguments) {
+  MockA a;
+  Expectation e1 = EXPECT_CALL(a, DoA(1));
+  Expectation e2 = EXPECT_CALL(a, DoA(2));
+  Expectation e3 = EXPECT_CALL(a, DoA(3));
+  ExpectationSet es1 = EXPECT_CALL(a, DoA(4));
+  ExpectationSet es2 = EXPECT_CALL(a, DoA(5));
+  EXPECT_CALL(a, DoA(6))
+      .After(e1, e2, e3, es1, es2);
+
+  a.DoA(5);
+  a.DoA(2);
+  a.DoA(4);
+  a.DoA(1);
+  a.DoA(3);
+  a.DoA(6);
+}
+
+// .After() allows input to contain duplicated Expectations.
+TEST(AfterTest, AcceptsDuplicatedInput) {
+  MockA a;
+  ON_CALL(a, ReturnResult(_))
+      .WillByDefault(Return(Result()));
+
+  // Define ordering:
+  //   DoA(1) ==>
+  //   DoA(2) ==> ReturnResult(3)
+  Expectation e1 = EXPECT_CALL(a, DoA(1));
+  Expectation e2 = EXPECT_CALL(a, DoA(2));
+  ExpectationSet es;
+  es += e1;
+  es += e2;
+  EXPECT_CALL(a, ReturnResult(3))
+      .After(e1, e2, es, e1);
+
+  a.DoA(1);
+
+  // May only be after DoA(2).
+  EXPECT_NONFATAL_FAILURE(a.ReturnResult(3), "Unexpected mock function call");
+
+  a.DoA(2);
+  a.ReturnResult(3);
+}
+
+// An Expectation added to an ExpectationSet after it has been used in
+// an .After() has no effect.
+TEST(AfterTest, ChangesToExpectationSetHaveNoEffectAfterwards) {
+  MockA a;
+  ExpectationSet es1 = EXPECT_CALL(a, DoA(1));
+  Expectation e2 = EXPECT_CALL(a, DoA(2));
+  EXPECT_CALL(a, DoA(3))
+      .After(es1);
+  es1 += e2;
+
+  a.DoA(1);
+  a.DoA(3);
+  a.DoA(2);
+}
+
+// Tests that Google Mock correctly handles calls to mock functions
+// after a mock object owning one of their pre-requisites has died.
+
+// Tests that calls that satisfy the original spec are successful.
+TEST(DeletingMockEarlyTest, Success1) {
+  MockB* const b1 = new MockB;
+  MockA* const a = new MockA;
+  MockB* const b2 = new MockB;
+
+  {
+    InSequence dummy;
+    EXPECT_CALL(*b1, DoB(_))
+        .WillOnce(Return(1));
+    EXPECT_CALL(*a, Binary(_, _))
+        .Times(AnyNumber())
+        .WillRepeatedly(Return(true));
+    EXPECT_CALL(*b2, DoB(_))
+        .Times(AnyNumber())
+        .WillRepeatedly(Return(2));
+  }
+
+  EXPECT_EQ(1, b1->DoB(1));
+  delete b1;
+  // a's pre-requisite has died.
+  EXPECT_TRUE(a->Binary(0, 1));
+  delete b2;
+  // a's successor has died.
+  EXPECT_TRUE(a->Binary(1, 2));
+  delete a;
+}
+
+// Tests that calls that satisfy the original spec are successful.
+TEST(DeletingMockEarlyTest, Success2) {
+  MockB* const b1 = new MockB;
+  MockA* const a = new MockA;
+  MockB* const b2 = new MockB;
+
+  {
+    InSequence dummy;
+    EXPECT_CALL(*b1, DoB(_))
+        .WillOnce(Return(1));
+    EXPECT_CALL(*a, Binary(_, _))
+        .Times(AnyNumber());
+    EXPECT_CALL(*b2, DoB(_))
+        .Times(AnyNumber())
+        .WillRepeatedly(Return(2));
+  }
+
+  delete a;  // a is trivially satisfied.
+  EXPECT_EQ(1, b1->DoB(1));
+  EXPECT_EQ(2, b2->DoB(2));
+  delete b1;
+  delete b2;
+}
+
+// Tests that it's OK to delete a mock object itself in its action.
+
+// Suppresses warning on unreferenced formal parameter in MSVC with
+// -W4.
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
+#endif
+
+ACTION_P(Delete, ptr) { delete ptr; }
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+TEST(DeletingMockEarlyTest, CanDeleteSelfInActionReturningVoid) {
+  MockA* const a = new MockA;
+  EXPECT_CALL(*a, DoA(_)).WillOnce(Delete(a));
+  a->DoA(42);  // This will cause a to be deleted.
+}
+
+TEST(DeletingMockEarlyTest, CanDeleteSelfInActionReturningValue) {
+  MockA* const a = new MockA;
+  EXPECT_CALL(*a, ReturnResult(_))
+      .WillOnce(DoAll(Delete(a), Return(Result())));
+  a->ReturnResult(42);  // This will cause a to be deleted.
+}
+
+// Tests that calls that violate the original spec yield failures.
+TEST(DeletingMockEarlyTest, Failure1) {
+  MockB* const b1 = new MockB;
+  MockA* const a = new MockA;
+  MockB* const b2 = new MockB;
+
+  {
+    InSequence dummy;
+    EXPECT_CALL(*b1, DoB(_))
+        .WillOnce(Return(1));
+    EXPECT_CALL(*a, Binary(_, _))
+        .Times(AnyNumber());
+    EXPECT_CALL(*b2, DoB(_))
+        .Times(AnyNumber())
+        .WillRepeatedly(Return(2));
+  }
+
+  delete a;  // a is trivially satisfied.
+  EXPECT_NONFATAL_FAILURE({
+    b2->DoB(2);
+  }, "Unexpected mock function call");
+  EXPECT_EQ(1, b1->DoB(1));
+  delete b1;
+  delete b2;
+}
+
+// Tests that calls that violate the original spec yield failures.
+TEST(DeletingMockEarlyTest, Failure2) {
+  MockB* const b1 = new MockB;
+  MockA* const a = new MockA;
+  MockB* const b2 = new MockB;
+
+  {
+    InSequence dummy;
+    EXPECT_CALL(*b1, DoB(_));
+    EXPECT_CALL(*a, Binary(_, _))
+        .Times(AnyNumber());
+    EXPECT_CALL(*b2, DoB(_))
+        .Times(AnyNumber());
+  }
+
+  EXPECT_NONFATAL_FAILURE(delete b1,
+                          "Actual: never called");
+  EXPECT_NONFATAL_FAILURE(a->Binary(0, 1),
+                          "Unexpected mock function call");
+  EXPECT_NONFATAL_FAILURE(b2->DoB(1),
+                          "Unexpected mock function call");
+  delete a;
+  delete b2;
+}
+
+class EvenNumberCardinality : public CardinalityInterface {
+ public:
+  // Returns true if and only if call_count calls will satisfy this
+  // cardinality.
+  bool IsSatisfiedByCallCount(int call_count) const override {
+    return call_count % 2 == 0;
+  }
+
+  // Returns true if and only if call_count calls will saturate this
+  // cardinality.
+  bool IsSaturatedByCallCount(int /* call_count */) const override {
+    return false;
+  }
+
+  // Describes self to an ostream.
+  void DescribeTo(::std::ostream* os) const override {
+    *os << "called even number of times";
+  }
+};
+
+Cardinality EvenNumber() {
+  return Cardinality(new EvenNumberCardinality);
+}
+
+TEST(ExpectationBaseTest,
+     AllPrerequisitesAreSatisfiedWorksForNonMonotonicCardinality) {
+  MockA* a = new MockA;
+  Sequence s;
+
+  EXPECT_CALL(*a, DoA(1))
+      .Times(EvenNumber())
+      .InSequence(s);
+  EXPECT_CALL(*a, DoA(2))
+      .Times(AnyNumber())
+      .InSequence(s);
+  EXPECT_CALL(*a, DoA(3))
+      .Times(AnyNumber());
+
+  a->DoA(3);
+  a->DoA(1);
+  EXPECT_NONFATAL_FAILURE(a->DoA(2), "Unexpected mock function call");
+  EXPECT_NONFATAL_FAILURE(delete a, "to be called even number of times");
+}
+
+// The following tests verify the message generated when a mock
+// function is called.
+
+struct Printable {
+};
+
+inline void operator<<(::std::ostream& os, const Printable&) {
+  os << "Printable";
+}
+
+struct Unprintable {
+  Unprintable() : value(0) {}
+  int value;
+};
+
+class MockC {
+ public:
+  MockC() {}
+
+  MOCK_METHOD6(VoidMethod, void(bool cond, int n, std::string s, void* p,
+                                const Printable& x, Unprintable y));
+  MOCK_METHOD0(NonVoidMethod, int());  // NOLINT
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockC);
+};
+
+class VerboseFlagPreservingFixture : public testing::Test {
+ protected:
+  VerboseFlagPreservingFixture()
+      : saved_verbose_flag_(GMOCK_FLAG(verbose)) {}
+
+  ~VerboseFlagPreservingFixture() override {
+    GMOCK_FLAG(verbose) = saved_verbose_flag_;
+  }
+
+ private:
+  const std::string saved_verbose_flag_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(VerboseFlagPreservingFixture);
+};
+
+#if GTEST_HAS_STREAM_REDIRECTION
+
+// Tests that an uninteresting mock function call on a naggy mock
+// generates a warning without the stack trace when
+// --gmock_verbose=warning is specified.
+TEST(FunctionCallMessageTest,
+     UninterestingCallOnNaggyMockGeneratesNoStackTraceWhenVerboseWarning) {
+  GMOCK_FLAG(verbose) = kWarningVerbosity;
+  NaggyMock<MockC> c;
+  CaptureStdout();
+  c.VoidMethod(false, 5, "Hi", nullptr, Printable(), Unprintable());
+  const std::string output = GetCapturedStdout();
+  EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", output);
+  EXPECT_PRED_FORMAT2(IsNotSubstring, "Stack trace:", output);
+}
+
+// Tests that an uninteresting mock function call on a naggy mock
+// generates a warning containing the stack trace when
+// --gmock_verbose=info is specified.
+TEST(FunctionCallMessageTest,
+     UninterestingCallOnNaggyMockGeneratesFyiWithStackTraceWhenVerboseInfo) {
+  GMOCK_FLAG(verbose) = kInfoVerbosity;
+  NaggyMock<MockC> c;
+  CaptureStdout();
+  c.VoidMethod(false, 5, "Hi", nullptr, Printable(), Unprintable());
+  const std::string output = GetCapturedStdout();
+  EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", output);
+  EXPECT_PRED_FORMAT2(IsSubstring, "Stack trace:", output);
+
+# ifndef NDEBUG
+
+  // We check the stack trace content in dbg-mode only, as opt-mode
+  // may inline the call we are interested in seeing.
+
+  // Verifies that a void mock function's name appears in the stack
+  // trace.
+  EXPECT_PRED_FORMAT2(IsSubstring, "VoidMethod(", output);
+
+  // Verifies that a non-void mock function's name appears in the
+  // stack trace.
+  CaptureStdout();
+  c.NonVoidMethod();
+  const std::string output2 = GetCapturedStdout();
+  EXPECT_PRED_FORMAT2(IsSubstring, "NonVoidMethod(", output2);
+
+# endif  // NDEBUG
+}
+
+// Tests that an uninteresting mock function call on a naggy mock
+// causes the function arguments and return value to be printed.
+TEST(FunctionCallMessageTest,
+     UninterestingCallOnNaggyMockPrintsArgumentsAndReturnValue) {
+  // A non-void mock function.
+  NaggyMock<MockB> b;
+  CaptureStdout();
+  b.DoB();
+  const std::string output1 = GetCapturedStdout();
+  EXPECT_PRED_FORMAT2(
+      IsSubstring,
+      "Uninteresting mock function call - returning default value.\n"
+      "    Function call: DoB()\n"
+      "          Returns: 0\n", output1.c_str());
+  // Makes sure the return value is printed.
+
+  // A void mock function.
+  NaggyMock<MockC> c;
+  CaptureStdout();
+  c.VoidMethod(false, 5, "Hi", nullptr, Printable(), Unprintable());
+  const std::string output2 = GetCapturedStdout();
+  EXPECT_THAT(output2.c_str(),
+              ContainsRegex(
+                  "Uninteresting mock function call - returning directly\\.\n"
+                  "    Function call: VoidMethod"
+                  "\\(false, 5, \"Hi\", NULL, @.+ "
+                  "Printable, 4-byte object <00-00 00-00>\\)"));
+  // A void function has no return value to print.
+}
+
+// Tests how the --gmock_verbose flag affects Google Mock's output.
+
+class GMockVerboseFlagTest : public VerboseFlagPreservingFixture {
+ public:
+  // Verifies that the given Google Mock output is correct.  (When
+  // should_print is true, the output should match the given regex and
+  // contain the given function name in the stack trace.  When it's
+  // false, the output should be empty.)
+  void VerifyOutput(const std::string& output, bool should_print,
+                    const std::string& expected_substring,
+                    const std::string& function_name) {
+    if (should_print) {
+      EXPECT_THAT(output.c_str(), HasSubstr(expected_substring));
+# ifndef NDEBUG
+      // We check the stack trace content in dbg-mode only, as opt-mode
+      // may inline the call we are interested in seeing.
+      EXPECT_THAT(output.c_str(), HasSubstr(function_name));
+# else
+      // Suppresses 'unused function parameter' warnings.
+      static_cast<void>(function_name);
+# endif  // NDEBUG
+    } else {
+      EXPECT_STREQ("", output.c_str());
+    }
+  }
+
+  // Tests how the flag affects expected calls.
+  void TestExpectedCall(bool should_print) {
+    MockA a;
+    EXPECT_CALL(a, DoA(5));
+    EXPECT_CALL(a, Binary(_, 1))
+        .WillOnce(Return(true));
+
+    // A void-returning function.
+    CaptureStdout();
+    a.DoA(5);
+    VerifyOutput(
+        GetCapturedStdout(),
+        should_print,
+        "Mock function call matches EXPECT_CALL(a, DoA(5))...\n"
+        "    Function call: DoA(5)\n"
+        "Stack trace:\n",
+        "DoA");
+
+    // A non-void-returning function.
+    CaptureStdout();
+    a.Binary(2, 1);
+    VerifyOutput(
+        GetCapturedStdout(),
+        should_print,
+        "Mock function call matches EXPECT_CALL(a, Binary(_, 1))...\n"
+        "    Function call: Binary(2, 1)\n"
+        "          Returns: true\n"
+        "Stack trace:\n",
+        "Binary");
+  }
+
+  // Tests how the flag affects uninteresting calls on a naggy mock.
+  void TestUninterestingCallOnNaggyMock(bool should_print) {
+    NaggyMock<MockA> a;
+    const std::string note =
+        "NOTE: You can safely ignore the above warning unless this "
+        "call should not happen.  Do not suppress it by blindly adding "
+        "an EXPECT_CALL() if you don't mean to enforce the call.  "
+        "See "
+        "https://github.com/google/googletest/blob/master/googlemock/docs/"
+        "cook_book.md#"
+        "knowing-when-to-expect for details.";
+
+    // A void-returning function.
+    CaptureStdout();
+    a.DoA(5);
+    VerifyOutput(
+        GetCapturedStdout(),
+        should_print,
+        "\nGMOCK WARNING:\n"
+        "Uninteresting mock function call - returning directly.\n"
+        "    Function call: DoA(5)\n" +
+        note,
+        "DoA");
+
+    // A non-void-returning function.
+    CaptureStdout();
+    a.Binary(2, 1);
+    VerifyOutput(
+        GetCapturedStdout(),
+        should_print,
+        "\nGMOCK WARNING:\n"
+        "Uninteresting mock function call - returning default value.\n"
+        "    Function call: Binary(2, 1)\n"
+        "          Returns: false\n" +
+        note,
+        "Binary");
+  }
+};
+
+// Tests that --gmock_verbose=info causes both expected and
+// uninteresting calls to be reported.
+TEST_F(GMockVerboseFlagTest, Info) {
+  GMOCK_FLAG(verbose) = kInfoVerbosity;
+  TestExpectedCall(true);
+  TestUninterestingCallOnNaggyMock(true);
+}
+
+// Tests that --gmock_verbose=warning causes uninteresting calls to be
+// reported.
+TEST_F(GMockVerboseFlagTest, Warning) {
+  GMOCK_FLAG(verbose) = kWarningVerbosity;
+  TestExpectedCall(false);
+  TestUninterestingCallOnNaggyMock(true);
+}
+
+// Tests that --gmock_verbose=warning causes neither expected nor
+// uninteresting calls to be reported.
+TEST_F(GMockVerboseFlagTest, Error) {
+  GMOCK_FLAG(verbose) = kErrorVerbosity;
+  TestExpectedCall(false);
+  TestUninterestingCallOnNaggyMock(false);
+}
+
+// Tests that --gmock_verbose=SOME_INVALID_VALUE has the same effect
+// as --gmock_verbose=warning.
+TEST_F(GMockVerboseFlagTest, InvalidFlagIsTreatedAsWarning) {
+  GMOCK_FLAG(verbose) = "invalid";  // Treated as "warning".
+  TestExpectedCall(false);
+  TestUninterestingCallOnNaggyMock(true);
+}
+
+#endif  // GTEST_HAS_STREAM_REDIRECTION
+
+// A helper class that generates a failure when printed.  We use it to
+// ensure that Google Mock doesn't print a value (even to an internal
+// buffer) when it is not supposed to do so.
+class PrintMeNot {};
+
+void PrintTo(PrintMeNot /* dummy */, ::std::ostream* /* os */) {
+  ADD_FAILURE() << "Google Mock is printing a value that shouldn't be "
+                << "printed even to an internal buffer.";
+}
+
+class LogTestHelper {
+ public:
+  LogTestHelper() {}
+
+  MOCK_METHOD1(Foo, PrintMeNot(PrintMeNot));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(LogTestHelper);
+};
+
+class GMockLogTest : public VerboseFlagPreservingFixture {
+ protected:
+  LogTestHelper helper_;
+};
+
+TEST_F(GMockLogTest, DoesNotPrintGoodCallInternallyIfVerbosityIsWarning) {
+  GMOCK_FLAG(verbose) = kWarningVerbosity;
+  EXPECT_CALL(helper_, Foo(_))
+      .WillOnce(Return(PrintMeNot()));
+  helper_.Foo(PrintMeNot());  // This is an expected call.
+}
+
+TEST_F(GMockLogTest, DoesNotPrintGoodCallInternallyIfVerbosityIsError) {
+  GMOCK_FLAG(verbose) = kErrorVerbosity;
+  EXPECT_CALL(helper_, Foo(_))
+      .WillOnce(Return(PrintMeNot()));
+  helper_.Foo(PrintMeNot());  // This is an expected call.
+}
+
+TEST_F(GMockLogTest, DoesNotPrintWarningInternallyIfVerbosityIsError) {
+  GMOCK_FLAG(verbose) = kErrorVerbosity;
+  ON_CALL(helper_, Foo(_))
+      .WillByDefault(Return(PrintMeNot()));
+  helper_.Foo(PrintMeNot());  // This should generate a warning.
+}
+
+// Tests Mock::AllowLeak().
+
+TEST(AllowLeakTest, AllowsLeakingUnusedMockObject) {
+  MockA* a = new MockA;
+  Mock::AllowLeak(a);
+}
+
+TEST(AllowLeakTest, CanBeCalledBeforeOnCall) {
+  MockA* a = new MockA;
+  Mock::AllowLeak(a);
+  ON_CALL(*a, DoA(_)).WillByDefault(Return());
+  a->DoA(0);
+}
+
+TEST(AllowLeakTest, CanBeCalledAfterOnCall) {
+  MockA* a = new MockA;
+  ON_CALL(*a, DoA(_)).WillByDefault(Return());
+  Mock::AllowLeak(a);
+}
+
+TEST(AllowLeakTest, CanBeCalledBeforeExpectCall) {
+  MockA* a = new MockA;
+  Mock::AllowLeak(a);
+  EXPECT_CALL(*a, DoA(_));
+  a->DoA(0);
+}
+
+TEST(AllowLeakTest, CanBeCalledAfterExpectCall) {
+  MockA* a = new MockA;
+  EXPECT_CALL(*a, DoA(_)).Times(AnyNumber());
+  Mock::AllowLeak(a);
+}
+
+TEST(AllowLeakTest, WorksWhenBothOnCallAndExpectCallArePresent) {
+  MockA* a = new MockA;
+  ON_CALL(*a, DoA(_)).WillByDefault(Return());
+  EXPECT_CALL(*a, DoA(_)).Times(AnyNumber());
+  Mock::AllowLeak(a);
+}
+
+// Tests that we can verify and clear a mock object's expectations
+// when none of its methods has expectations.
+TEST(VerifyAndClearExpectationsTest, NoMethodHasExpectations) {
+  MockB b;
+  ASSERT_TRUE(Mock::VerifyAndClearExpectations(&b));
+
+  // There should be no expectations on the methods now, so we can
+  // freely call them.
+  EXPECT_EQ(0, b.DoB());
+  EXPECT_EQ(0, b.DoB(1));
+}
+
+// Tests that we can verify and clear a mock object's expectations
+// when some, but not all, of its methods have expectations *and* the
+// verification succeeds.
+TEST(VerifyAndClearExpectationsTest, SomeMethodsHaveExpectationsAndSucceed) {
+  MockB b;
+  EXPECT_CALL(b, DoB())
+      .WillOnce(Return(1));
+  b.DoB();
+  ASSERT_TRUE(Mock::VerifyAndClearExpectations(&b));
+
+  // There should be no expectations on the methods now, so we can
+  // freely call them.
+  EXPECT_EQ(0, b.DoB());
+  EXPECT_EQ(0, b.DoB(1));
+}
+
+// Tests that we can verify and clear a mock object's expectations
+// when some, but not all, of its methods have expectations *and* the
+// verification fails.
+TEST(VerifyAndClearExpectationsTest, SomeMethodsHaveExpectationsAndFail) {
+  MockB b;
+  EXPECT_CALL(b, DoB())
+      .WillOnce(Return(1));
+  bool result = true;
+  EXPECT_NONFATAL_FAILURE(result = Mock::VerifyAndClearExpectations(&b),
+                          "Actual: never called");
+  ASSERT_FALSE(result);
+
+  // There should be no expectations on the methods now, so we can
+  // freely call them.
+  EXPECT_EQ(0, b.DoB());
+  EXPECT_EQ(0, b.DoB(1));
+}
+
+// Tests that we can verify and clear a mock object's expectations
+// when all of its methods have expectations.
+TEST(VerifyAndClearExpectationsTest, AllMethodsHaveExpectations) {
+  MockB b;
+  EXPECT_CALL(b, DoB())
+      .WillOnce(Return(1));
+  EXPECT_CALL(b, DoB(_))
+      .WillOnce(Return(2));
+  b.DoB();
+  b.DoB(1);
+  ASSERT_TRUE(Mock::VerifyAndClearExpectations(&b));
+
+  // There should be no expectations on the methods now, so we can
+  // freely call them.
+  EXPECT_EQ(0, b.DoB());
+  EXPECT_EQ(0, b.DoB(1));
+}
+
+// Tests that we can verify and clear a mock object's expectations
+// when a method has more than one expectation.
+TEST(VerifyAndClearExpectationsTest, AMethodHasManyExpectations) {
+  MockB b;
+  EXPECT_CALL(b, DoB(0))
+      .WillOnce(Return(1));
+  EXPECT_CALL(b, DoB(_))
+      .WillOnce(Return(2));
+  b.DoB(1);
+  bool result = true;
+  EXPECT_NONFATAL_FAILURE(result = Mock::VerifyAndClearExpectations(&b),
+                          "Actual: never called");
+  ASSERT_FALSE(result);
+
+  // There should be no expectations on the methods now, so we can
+  // freely call them.
+  EXPECT_EQ(0, b.DoB());
+  EXPECT_EQ(0, b.DoB(1));
+}
+
+// Tests that we can call VerifyAndClearExpectations() on the same
+// mock object multiple times.
+TEST(VerifyAndClearExpectationsTest, CanCallManyTimes) {
+  MockB b;
+  EXPECT_CALL(b, DoB());
+  b.DoB();
+  Mock::VerifyAndClearExpectations(&b);
+
+  EXPECT_CALL(b, DoB(_))
+      .WillOnce(Return(1));
+  b.DoB(1);
+  Mock::VerifyAndClearExpectations(&b);
+  Mock::VerifyAndClearExpectations(&b);
+
+  // There should be no expectations on the methods now, so we can
+  // freely call them.
+  EXPECT_EQ(0, b.DoB());
+  EXPECT_EQ(0, b.DoB(1));
+}
+
+// Tests that we can clear a mock object's default actions when none
+// of its methods has default actions.
+TEST(VerifyAndClearTest, NoMethodHasDefaultActions) {
+  MockB b;
+  // If this crashes or generates a failure, the test will catch it.
+  Mock::VerifyAndClear(&b);
+  EXPECT_EQ(0, b.DoB());
+}
+
+// Tests that we can clear a mock object's default actions when some,
+// but not all of its methods have default actions.
+TEST(VerifyAndClearTest, SomeMethodsHaveDefaultActions) {
+  MockB b;
+  ON_CALL(b, DoB())
+      .WillByDefault(Return(1));
+
+  Mock::VerifyAndClear(&b);
+
+  // Verifies that the default action of int DoB() was removed.
+  EXPECT_EQ(0, b.DoB());
+}
+
+// Tests that we can clear a mock object's default actions when all of
+// its methods have default actions.
+TEST(VerifyAndClearTest, AllMethodsHaveDefaultActions) {
+  MockB b;
+  ON_CALL(b, DoB())
+      .WillByDefault(Return(1));
+  ON_CALL(b, DoB(_))
+      .WillByDefault(Return(2));
+
+  Mock::VerifyAndClear(&b);
+
+  // Verifies that the default action of int DoB() was removed.
+  EXPECT_EQ(0, b.DoB());
+
+  // Verifies that the default action of int DoB(int) was removed.
+  EXPECT_EQ(0, b.DoB(0));
+}
+
+// Tests that we can clear a mock object's default actions when a
+// method has more than one ON_CALL() set on it.
+TEST(VerifyAndClearTest, AMethodHasManyDefaultActions) {
+  MockB b;
+  ON_CALL(b, DoB(0))
+      .WillByDefault(Return(1));
+  ON_CALL(b, DoB(_))
+      .WillByDefault(Return(2));
+
+  Mock::VerifyAndClear(&b);
+
+  // Verifies that the default actions (there are two) of int DoB(int)
+  // were removed.
+  EXPECT_EQ(0, b.DoB(0));
+  EXPECT_EQ(0, b.DoB(1));
+}
+
+// Tests that we can call VerifyAndClear() on a mock object multiple
+// times.
+TEST(VerifyAndClearTest, CanCallManyTimes) {
+  MockB b;
+  ON_CALL(b, DoB())
+      .WillByDefault(Return(1));
+  Mock::VerifyAndClear(&b);
+  Mock::VerifyAndClear(&b);
+
+  ON_CALL(b, DoB(_))
+      .WillByDefault(Return(1));
+  Mock::VerifyAndClear(&b);
+
+  EXPECT_EQ(0, b.DoB());
+  EXPECT_EQ(0, b.DoB(1));
+}
+
+// Tests that VerifyAndClear() works when the verification succeeds.
+TEST(VerifyAndClearTest, Success) {
+  MockB b;
+  ON_CALL(b, DoB())
+      .WillByDefault(Return(1));
+  EXPECT_CALL(b, DoB(1))
+      .WillOnce(Return(2));
+
+  b.DoB();
+  b.DoB(1);
+  ASSERT_TRUE(Mock::VerifyAndClear(&b));
+
+  // There should be no expectations on the methods now, so we can
+  // freely call them.
+  EXPECT_EQ(0, b.DoB());
+  EXPECT_EQ(0, b.DoB(1));
+}
+
+// Tests that VerifyAndClear() works when the verification fails.
+TEST(VerifyAndClearTest, Failure) {
+  MockB b;
+  ON_CALL(b, DoB(_))
+      .WillByDefault(Return(1));
+  EXPECT_CALL(b, DoB())
+      .WillOnce(Return(2));
+
+  b.DoB(1);
+  bool result = true;
+  EXPECT_NONFATAL_FAILURE(result = Mock::VerifyAndClear(&b),
+                          "Actual: never called");
+  ASSERT_FALSE(result);
+
+  // There should be no expectations on the methods now, so we can
+  // freely call them.
+  EXPECT_EQ(0, b.DoB());
+  EXPECT_EQ(0, b.DoB(1));
+}
+
+// Tests that VerifyAndClear() works when the default actions and
+// expectations are set on a const mock object.
+TEST(VerifyAndClearTest, Const) {
+  MockB b;
+  ON_CALL(Const(b), DoB())
+      .WillByDefault(Return(1));
+
+  EXPECT_CALL(Const(b), DoB())
+      .WillOnce(DoDefault())
+      .WillOnce(Return(2));
+
+  b.DoB();
+  b.DoB();
+  ASSERT_TRUE(Mock::VerifyAndClear(&b));
+
+  // There should be no expectations on the methods now, so we can
+  // freely call them.
+  EXPECT_EQ(0, b.DoB());
+  EXPECT_EQ(0, b.DoB(1));
+}
+
+// Tests that we can set default actions and expectations on a mock
+// object after VerifyAndClear() has been called on it.
+TEST(VerifyAndClearTest, CanSetDefaultActionsAndExpectationsAfterwards) {
+  MockB b;
+  ON_CALL(b, DoB())
+      .WillByDefault(Return(1));
+  EXPECT_CALL(b, DoB(_))
+      .WillOnce(Return(2));
+  b.DoB(1);
+
+  Mock::VerifyAndClear(&b);
+
+  EXPECT_CALL(b, DoB())
+      .WillOnce(Return(3));
+  ON_CALL(b, DoB(_))
+      .WillByDefault(Return(4));
+
+  EXPECT_EQ(3, b.DoB());
+  EXPECT_EQ(4, b.DoB(1));
+}
+
+// Tests that calling VerifyAndClear() on one mock object does not
+// affect other mock objects (either of the same type or not).
+TEST(VerifyAndClearTest, DoesNotAffectOtherMockObjects) {
+  MockA a;
+  MockB b1;
+  MockB b2;
+
+  ON_CALL(a, Binary(_, _))
+      .WillByDefault(Return(true));
+  EXPECT_CALL(a, Binary(_, _))
+      .WillOnce(DoDefault())
+      .WillOnce(Return(false));
+
+  ON_CALL(b1, DoB())
+      .WillByDefault(Return(1));
+  EXPECT_CALL(b1, DoB(_))
+      .WillOnce(Return(2));
+
+  ON_CALL(b2, DoB())
+      .WillByDefault(Return(3));
+  EXPECT_CALL(b2, DoB(_));
+
+  b2.DoB(0);
+  Mock::VerifyAndClear(&b2);
+
+  // Verifies that the default actions and expectations of a and b1
+  // are still in effect.
+  EXPECT_TRUE(a.Binary(0, 0));
+  EXPECT_FALSE(a.Binary(0, 0));
+
+  EXPECT_EQ(1, b1.DoB());
+  EXPECT_EQ(2, b1.DoB(0));
+}
+
+TEST(VerifyAndClearTest,
+     DestroyingChainedMocksDoesNotDeadlockThroughExpectations) {
+  std::shared_ptr<MockA> a(new MockA);
+  ReferenceHoldingMock test_mock;
+
+  // EXPECT_CALL stores a reference to a inside test_mock.
+  EXPECT_CALL(test_mock, AcceptReference(_))
+      .WillRepeatedly(SetArgPointee<0>(a));
+
+  // Throw away the reference to the mock that we have in a. After this, the
+  // only reference to it is stored by test_mock.
+  a.reset();
+
+  // When test_mock goes out of scope, it destroys the last remaining reference
+  // to the mock object originally pointed to by a. This will cause the MockA
+  // destructor to be called from inside the ReferenceHoldingMock destructor.
+  // The state of all mocks is protected by a single global lock, but there
+  // should be no deadlock.
+}
+
+TEST(VerifyAndClearTest,
+     DestroyingChainedMocksDoesNotDeadlockThroughDefaultAction) {
+  std::shared_ptr<MockA> a(new MockA);
+  ReferenceHoldingMock test_mock;
+
+  // ON_CALL stores a reference to a inside test_mock.
+  ON_CALL(test_mock, AcceptReference(_))
+      .WillByDefault(SetArgPointee<0>(a));
+
+  // Throw away the reference to the mock that we have in a. After this, the
+  // only reference to it is stored by test_mock.
+  a.reset();
+
+  // When test_mock goes out of scope, it destroys the last remaining reference
+  // to the mock object originally pointed to by a. This will cause the MockA
+  // destructor to be called from inside the ReferenceHoldingMock destructor.
+  // The state of all mocks is protected by a single global lock, but there
+  // should be no deadlock.
+}
+
+// Tests that a mock function's action can call a mock function
+// (either the same function or a different one) either as an explicit
+// action or as a default action without causing a dead lock.  It
+// verifies that the action is not performed inside the critical
+// section.
+TEST(SynchronizationTest, CanCallMockMethodInAction) {
+  MockA a;
+  MockC c;
+  ON_CALL(a, DoA(_))
+      .WillByDefault(IgnoreResult(InvokeWithoutArgs(&c,
+                                                    &MockC::NonVoidMethod)));
+  EXPECT_CALL(a, DoA(1));
+  EXPECT_CALL(a, DoA(1))
+      .WillOnce(Invoke(&a, &MockA::DoA))
+      .RetiresOnSaturation();
+  EXPECT_CALL(c, NonVoidMethod());
+
+  a.DoA(1);
+  // This will match the second EXPECT_CALL() and trigger another a.DoA(1),
+  // which will in turn match the first EXPECT_CALL() and trigger a call to
+  // c.NonVoidMethod() that was specified by the ON_CALL() since the first
+  // EXPECT_CALL() did not specify an action.
+}
+
+TEST(ParameterlessExpectationsTest, CanSetExpectationsWithoutMatchers) {
+  MockA a;
+  int do_a_arg0 = 0;
+  ON_CALL(a, DoA).WillByDefault(SaveArg<0>(&do_a_arg0));
+  int do_a_47_arg0 = 0;
+  ON_CALL(a, DoA(47)).WillByDefault(SaveArg<0>(&do_a_47_arg0));
+
+  a.DoA(17);
+  EXPECT_THAT(do_a_arg0, 17);
+  EXPECT_THAT(do_a_47_arg0, 0);
+  a.DoA(47);
+  EXPECT_THAT(do_a_arg0, 17);
+  EXPECT_THAT(do_a_47_arg0, 47);
+
+  ON_CALL(a, Binary).WillByDefault(Return(true));
+  ON_CALL(a, Binary(_, 14)).WillByDefault(Return(false));
+  EXPECT_THAT(a.Binary(14, 17), true);
+  EXPECT_THAT(a.Binary(17, 14), false);
+}
+
+TEST(ParameterlessExpectationsTest, CanSetExpectationsForOverloadedMethods) {
+  MockB b;
+  ON_CALL(b, DoB()).WillByDefault(Return(9));
+  ON_CALL(b, DoB(5)).WillByDefault(Return(11));
+
+  EXPECT_THAT(b.DoB(), 9);
+  EXPECT_THAT(b.DoB(1), 0);  // default value
+  EXPECT_THAT(b.DoB(5), 11);
+}
+
+struct MockWithConstMethods {
+ public:
+  MOCK_CONST_METHOD1(Foo, int(int));
+  MOCK_CONST_METHOD2(Bar, int(int, const char*));
+};
+
+TEST(ParameterlessExpectationsTest, CanSetExpectationsForConstMethods) {
+  MockWithConstMethods mock;
+  ON_CALL(mock, Foo).WillByDefault(Return(7));
+  ON_CALL(mock, Bar).WillByDefault(Return(33));
+
+  EXPECT_THAT(mock.Foo(17), 7);
+  EXPECT_THAT(mock.Bar(27, "purple"), 33);
+}
+
+class MockConstOverload {
+ public:
+  MOCK_METHOD1(Overloaded, int(int));
+  MOCK_CONST_METHOD1(Overloaded, int(int));
+};
+
+TEST(ParameterlessExpectationsTest,
+     CanSetExpectationsForConstOverloadedMethods) {
+  MockConstOverload mock;
+  ON_CALL(mock, Overloaded(_)).WillByDefault(Return(7));
+  ON_CALL(mock, Overloaded(5)).WillByDefault(Return(9));
+  ON_CALL(Const(mock), Overloaded(5)).WillByDefault(Return(11));
+  ON_CALL(Const(mock), Overloaded(7)).WillByDefault(Return(13));
+
+  EXPECT_THAT(mock.Overloaded(1), 7);
+  EXPECT_THAT(mock.Overloaded(5), 9);
+  EXPECT_THAT(mock.Overloaded(7), 7);
+
+  const MockConstOverload& const_mock = mock;
+  EXPECT_THAT(const_mock.Overloaded(1), 0);
+  EXPECT_THAT(const_mock.Overloaded(5), 11);
+  EXPECT_THAT(const_mock.Overloaded(7), 13);
+}
+
+}  // namespace
+
+// Allows the user to define their own main and then invoke gmock_main
+// from it. This might be necessary on some platforms which require
+// specific setup and teardown.
+#if GMOCK_RENAME_MAIN
+int gmock_main(int argc, char **argv) {
+#else
+int main(int argc, char **argv) {
+#endif  // GMOCK_RENAME_MAIN
+  testing::InitGoogleMock(&argc, argv);
+  // Ensures that the tests pass no matter what value of
+  // --gmock_catch_leaked_mocks and --gmock_verbose the user specifies.
+  testing::GMOCK_FLAG(catch_leaked_mocks) = true;
+  testing::GMOCK_FLAG(verbose) = testing::internal::kWarningVerbosity;
+
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googlemock/test/gmock_all_test.cc b/build/_deps/googletest-src/googlemock/test/gmock_all_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b2b2027db991dc1932ce841ca2f2eb738bf9de08
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock_all_test.cc
@@ -0,0 +1,49 @@
+// Copyright 2009, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Tests for Google C++ Mocking Framework (Google Mock)
+//
+// Some users use a build system that Google Mock doesn't support directly,
+// yet they still want to build and run Google Mock's own tests.  This file
+// includes most such tests, making it easier for these users to maintain
+// their build scripts (they just need to build this file, even though the
+// below list of actual *_test.cc files might change).
+#include "test/gmock-actions_test.cc"
+#include "test/gmock-cardinalities_test.cc"
+#include "test/gmock-generated-actions_test.cc"
+#include "test/gmock-generated-function-mockers_test.cc"
+#include "test/gmock-generated-matchers_test.cc"
+#include "test/gmock-internal-utils_test.cc"
+#include "test/gmock-matchers_test.cc"
+#include "test/gmock-more-actions_test.cc"
+#include "test/gmock-nice-strict_test.cc"
+#include "test/gmock-port_test.cc"
+#include "test/gmock-spec-builders_test.cc"
+#include "test/gmock_test.cc"
diff --git a/build/_deps/googletest-src/googlemock/test/gmock_ex_test.cc b/build/_deps/googletest-src/googlemock/test/gmock_ex_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..72eb43f74ef4b8f5e9e4e3b199abe4657bec13fd
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock_ex_test.cc
@@ -0,0 +1,80 @@
+// Copyright 2013, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Tests Google Mock's functionality that depends on exceptions.
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+#if GTEST_HAS_EXCEPTIONS
+namespace {
+
+using testing::HasSubstr;
+
+using testing::internal::GoogleTestFailureException;
+
+// A type that cannot be default constructed.
+class NonDefaultConstructible {
+ public:
+  explicit NonDefaultConstructible(int /* dummy */) {}
+};
+
+class MockFoo {
+ public:
+  // A mock method that returns a user-defined type.  Google Mock
+  // doesn't know what the default value for this type is.
+  MOCK_METHOD0(GetNonDefaultConstructible, NonDefaultConstructible());
+};
+
+TEST(DefaultValueTest, ThrowsRuntimeErrorWhenNoDefaultValue) {
+  MockFoo mock;
+  try {
+    // No expectation is set on this method, so Google Mock must
+    // return the default value.  However, since Google Mock knows
+    // nothing about the return type, it doesn't know what to return,
+    // and has to throw (when exceptions are enabled) or abort
+    // (otherwise).
+    mock.GetNonDefaultConstructible();
+    FAIL() << "GetNonDefaultConstructible()'s return type has no default "
+           << "value, so Google Mock should have thrown.";
+  } catch (const GoogleTestFailureException& /* unused */) {
+    FAIL() << "Google Test does not try to catch an exception of type "
+           << "GoogleTestFailureException, which is used for reporting "
+           << "a failure to other testing frameworks.  Google Mock should "
+           << "not throw a GoogleTestFailureException as it will kill the "
+           << "entire test program instead of just the current TEST.";
+  } catch (const std::exception& ex) {
+    EXPECT_THAT(ex.what(), HasSubstr("has no default value"));
+  }
+}
+
+
+}  // unnamed namespace
+#endif
diff --git a/build/_deps/googletest-src/googlemock/test/gmock_leak_test.py b/build/_deps/googletest-src/googlemock/test/gmock_leak_test.py
new file mode 100755
index 0000000000000000000000000000000000000000..7e4b1eea9ae89107cd861352850e9abad94a14a4
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock_leak_test.py
@@ -0,0 +1,104 @@
+#!/usr/bin/env python
+#
+# Copyright 2009, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Tests that leaked mock objects can be caught be Google Mock."""
+
+import gmock_test_utils
+
+PROGRAM_PATH = gmock_test_utils.GetTestExecutablePath('gmock_leak_test_')
+TEST_WITH_EXPECT_CALL = [PROGRAM_PATH, '--gtest_filter=*ExpectCall*']
+TEST_WITH_ON_CALL = [PROGRAM_PATH, '--gtest_filter=*OnCall*']
+TEST_MULTIPLE_LEAKS = [PROGRAM_PATH, '--gtest_filter=*MultipleLeaked*']
+
+environ = gmock_test_utils.environ
+SetEnvVar = gmock_test_utils.SetEnvVar
+
+# Tests in this file run a Google-Test-based test program and expect it
+# to terminate prematurely.  Therefore they are incompatible with
+# the premature-exit-file protocol by design.  Unset the
+# premature-exit filepath to prevent Google Test from creating
+# the file.
+SetEnvVar(gmock_test_utils.PREMATURE_EXIT_FILE_ENV_VAR, None)
+
+
+class GMockLeakTest(gmock_test_utils.TestCase):
+
+  def testCatchesLeakedMockByDefault(self):
+    self.assertNotEqual(
+        0,
+        gmock_test_utils.Subprocess(TEST_WITH_EXPECT_CALL,
+                                    env=environ).exit_code)
+    self.assertNotEqual(
+        0,
+        gmock_test_utils.Subprocess(TEST_WITH_ON_CALL,
+                                    env=environ).exit_code)
+
+  def testDoesNotCatchLeakedMockWhenDisabled(self):
+    self.assertEquals(
+        0,
+        gmock_test_utils.Subprocess(TEST_WITH_EXPECT_CALL +
+                                    ['--gmock_catch_leaked_mocks=0'],
+                                    env=environ).exit_code)
+    self.assertEquals(
+        0,
+        gmock_test_utils.Subprocess(TEST_WITH_ON_CALL +
+                                    ['--gmock_catch_leaked_mocks=0'],
+                                    env=environ).exit_code)
+
+  def testCatchesLeakedMockWhenEnabled(self):
+    self.assertNotEqual(
+        0,
+        gmock_test_utils.Subprocess(TEST_WITH_EXPECT_CALL +
+                                    ['--gmock_catch_leaked_mocks'],
+                                    env=environ).exit_code)
+    self.assertNotEqual(
+        0,
+        gmock_test_utils.Subprocess(TEST_WITH_ON_CALL +
+                                    ['--gmock_catch_leaked_mocks'],
+                                    env=environ).exit_code)
+
+  def testCatchesLeakedMockWhenEnabledWithExplictFlagValue(self):
+    self.assertNotEqual(
+        0,
+        gmock_test_utils.Subprocess(TEST_WITH_EXPECT_CALL +
+                                    ['--gmock_catch_leaked_mocks=1'],
+                                    env=environ).exit_code)
+
+  def testCatchesMultipleLeakedMocks(self):
+    self.assertNotEqual(
+        0,
+        gmock_test_utils.Subprocess(TEST_MULTIPLE_LEAKS +
+                                    ['--gmock_catch_leaked_mocks'],
+                                    env=environ).exit_code)
+
+
+if __name__ == '__main__':
+  gmock_test_utils.Main()
diff --git a/build/_deps/googletest-src/googlemock/test/gmock_leak_test_.cc b/build/_deps/googletest-src/googlemock/test/gmock_leak_test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2e095abcf49689dfd8bbbaa22b42f301471e3b4f
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock_leak_test_.cc
@@ -0,0 +1,99 @@
+// Copyright 2009, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This program is for verifying that a leaked mock object can be
+// caught by Google Mock's leak detector.
+
+#include "gmock/gmock.h"
+
+namespace {
+
+using ::testing::Return;
+
+class FooInterface {
+ public:
+  virtual ~FooInterface() {}
+  virtual void DoThis() = 0;
+};
+
+class MockFoo : public FooInterface {
+ public:
+  MockFoo() {}
+
+  MOCK_METHOD0(DoThis, void());
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFoo);
+};
+
+TEST(LeakTest, LeakedMockWithExpectCallCausesFailureWhenLeakCheckingIsEnabled) {
+  MockFoo* foo = new MockFoo;
+
+  EXPECT_CALL(*foo, DoThis());
+  foo->DoThis();
+
+  // In order to test the leak detector, we deliberately leak foo.
+
+  // Makes sure Google Mock's leak detector can change the exit code
+  // to 1 even when the code is already exiting with 0.
+  exit(0);
+}
+
+TEST(LeakTest, LeakedMockWithOnCallCausesFailureWhenLeakCheckingIsEnabled) {
+  MockFoo* foo = new MockFoo;
+
+  ON_CALL(*foo, DoThis()).WillByDefault(Return());
+
+  // In order to test the leak detector, we deliberately leak foo.
+
+  // Makes sure Google Mock's leak detector can change the exit code
+  // to 1 even when the code is already exiting with 0.
+  exit(0);
+}
+
+TEST(LeakTest, CatchesMultipleLeakedMockObjects) {
+  MockFoo* foo1 = new MockFoo;
+  MockFoo* foo2 = new MockFoo;
+
+  ON_CALL(*foo1, DoThis()).WillByDefault(Return());
+  EXPECT_CALL(*foo2, DoThis());
+  foo2->DoThis();
+
+  // In order to test the leak detector, we deliberately leak foo1 and
+  // foo2.
+
+  // Makes sure Google Mock's leak detector can change the exit code
+  // to 1 even when the code is already exiting with 0.
+  exit(0);
+}
+
+}  // namespace
diff --git a/build/_deps/googletest-src/googlemock/test/gmock_link2_test.cc b/build/_deps/googletest-src/googlemock/test/gmock_link2_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d27ce176887bf8b2879bcbf2ad597c28fca4d1de
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock_link2_test.cc
@@ -0,0 +1,39 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file is for verifying that various Google Mock constructs do not
+// produce linker errors when instantiated in different translation units.
+// Please see gmock_link_test.h for details.
+
+#define LinkTest LinkTest2
+
+#include "test/gmock_link_test.h"
diff --git a/build/_deps/googletest-src/googlemock/test/gmock_link_test.cc b/build/_deps/googletest-src/googlemock/test/gmock_link_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e7c54cc230683de2d5688b00f251cb5c9fda116d
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock_link_test.cc
@@ -0,0 +1,39 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file is for verifying that various Google Mock constructs do not
+// produce linker errors when instantiated in different translation units.
+// Please see gmock_link_test.h for details.
+
+#define LinkTest LinkTest1
+
+#include "test/gmock_link_test.h"
diff --git a/build/_deps/googletest-src/googlemock/test/gmock_link_test.h b/build/_deps/googletest-src/googlemock/test/gmock_link_test.h
new file mode 100644
index 0000000000000000000000000000000000000000..175d2bdd1b44cbafb4359b6dda823c3347d593a4
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock_link_test.h
@@ -0,0 +1,690 @@
+// Copyright 2009, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests that:
+// a. A header file defining a mock class can be included in multiple
+//    translation units without causing a link error.
+// b. Actions and matchers can be instantiated with identical template
+//    arguments in different translation units without causing link
+//    errors.
+//    The following constructs are currently tested:
+//    Actions:
+//      Return()
+//      Return(value)
+//      ReturnNull
+//      ReturnRef
+//      Assign
+//      SetArgPointee
+//      SetArrayArgument
+//      SetErrnoAndReturn
+//      Invoke(function)
+//      Invoke(object, method)
+//      InvokeWithoutArgs(function)
+//      InvokeWithoutArgs(object, method)
+//      InvokeArgument
+//      WithArg
+//      WithArgs
+//      WithoutArgs
+//      DoAll
+//      DoDefault
+//      IgnoreResult
+//      Throw
+//      ACTION()-generated
+//      ACTION_P()-generated
+//      ACTION_P2()-generated
+//    Matchers:
+//      _
+//      A
+//      An
+//      Eq
+//      Gt, Lt, Ge, Le, Ne
+//      NotNull
+//      Ref
+//      TypedEq
+//      DoubleEq
+//      FloatEq
+//      NanSensitiveDoubleEq
+//      NanSensitiveFloatEq
+//      ContainsRegex
+//      MatchesRegex
+//      EndsWith
+//      HasSubstr
+//      StartsWith
+//      StrCaseEq
+//      StrCaseNe
+//      StrEq
+//      StrNe
+//      ElementsAre
+//      ElementsAreArray
+//      ContainerEq
+//      Field
+//      Property
+//      ResultOf(function)
+//      ResultOf(callback)
+//      Pointee
+//      Truly(predicate)
+//      AddressSatisfies
+//      AllOf
+//      AnyOf
+//      Not
+//      MatcherCast<T>
+//
+//  Please note: this test does not verify the functioning of these
+//  constructs, only that the programs using them will link successfully.
+//
+// Implementation note:
+// This test requires identical definitions of Interface and Mock to be
+// included in different translation units.  We achieve this by writing
+// them in this header and #including it in gmock_link_test.cc and
+// gmock_link2_test.cc.  Because the symbols generated by the compiler for
+// those constructs must be identical in both translation units,
+// definitions of Interface and Mock tests MUST be kept in the SAME
+// NON-ANONYMOUS namespace in this file.  The test fixture class LinkTest
+// is defined as LinkTest1 in gmock_link_test.cc and as LinkTest2 in
+// gmock_link2_test.cc to avoid producing linker errors.
+
+#ifndef GMOCK_TEST_GMOCK_LINK_TEST_H_
+#define GMOCK_TEST_GMOCK_LINK_TEST_H_
+
+#include "gmock/gmock.h"
+
+#if !GTEST_OS_WINDOWS_MOBILE
+# include <errno.h>
+#endif
+
+#include <iostream>
+#include <vector>
+
+#include "gtest/gtest.h"
+#include "gtest/internal/gtest-port.h"
+
+using testing::_;
+using testing::A;
+using testing::Action;
+using testing::AllOf;
+using testing::AnyOf;
+using testing::Assign;
+using testing::ContainerEq;
+using testing::DoAll;
+using testing::DoDefault;
+using testing::DoubleEq;
+using testing::ElementsAre;
+using testing::ElementsAreArray;
+using testing::EndsWith;
+using testing::Eq;
+using testing::Field;
+using testing::FloatEq;
+using testing::Ge;
+using testing::Gt;
+using testing::HasSubstr;
+using testing::IgnoreResult;
+using testing::Invoke;
+using testing::InvokeArgument;
+using testing::InvokeWithoutArgs;
+using testing::IsNull;
+using testing::IsSubsetOf;
+using testing::IsSupersetOf;
+using testing::Le;
+using testing::Lt;
+using testing::Matcher;
+using testing::MatcherCast;
+using testing::NanSensitiveDoubleEq;
+using testing::NanSensitiveFloatEq;
+using testing::Ne;
+using testing::Not;
+using testing::NotNull;
+using testing::Pointee;
+using testing::Property;
+using testing::Ref;
+using testing::ResultOf;
+using testing::Return;
+using testing::ReturnNull;
+using testing::ReturnRef;
+using testing::SetArgPointee;
+using testing::SetArrayArgument;
+using testing::StartsWith;
+using testing::StrCaseEq;
+using testing::StrCaseNe;
+using testing::StrEq;
+using testing::StrNe;
+using testing::Truly;
+using testing::TypedEq;
+using testing::WithArg;
+using testing::WithArgs;
+using testing::WithoutArgs;
+
+#if !GTEST_OS_WINDOWS_MOBILE
+using testing::SetErrnoAndReturn;
+#endif
+
+#if GTEST_HAS_EXCEPTIONS
+using testing::Throw;
+#endif
+
+using testing::ContainsRegex;
+using testing::MatchesRegex;
+
+class Interface {
+ public:
+  virtual ~Interface() {}
+  virtual void VoidFromString(char* str) = 0;
+  virtual char* StringFromString(char* str) = 0;
+  virtual int IntFromString(char* str) = 0;
+  virtual int& IntRefFromString(char* str) = 0;
+  virtual void VoidFromFunc(void(*func)(char* str)) = 0;
+  virtual void VoidFromIntRef(int& n) = 0;  // NOLINT
+  virtual void VoidFromFloat(float n) = 0;
+  virtual void VoidFromDouble(double n) = 0;
+  virtual void VoidFromVector(const std::vector<int>& v) = 0;
+};
+
+class Mock: public Interface {
+ public:
+  Mock() {}
+
+  MOCK_METHOD1(VoidFromString, void(char* str));
+  MOCK_METHOD1(StringFromString, char*(char* str));
+  MOCK_METHOD1(IntFromString, int(char* str));
+  MOCK_METHOD1(IntRefFromString, int&(char* str));
+  MOCK_METHOD1(VoidFromFunc, void(void(*func)(char* str)));
+  MOCK_METHOD1(VoidFromIntRef, void(int& n));  // NOLINT
+  MOCK_METHOD1(VoidFromFloat, void(float n));
+  MOCK_METHOD1(VoidFromDouble, void(double n));
+  MOCK_METHOD1(VoidFromVector, void(const std::vector<int>& v));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(Mock);
+};
+
+class InvokeHelper {
+ public:
+  static void StaticVoidFromVoid() {}
+  void VoidFromVoid() {}
+  static void StaticVoidFromString(char* /* str */) {}
+  void VoidFromString(char* /* str */) {}
+  static int StaticIntFromString(char* /* str */) { return 1; }
+  static bool StaticBoolFromString(const char* /* str */) { return true; }
+};
+
+class FieldHelper {
+ public:
+  explicit FieldHelper(int a_field) : field_(a_field) {}
+  int field() const { return field_; }
+  int field_;  // NOLINT -- need external access to field_ to test
+               //           the Field matcher.
+};
+
+// Tests the linkage of the ReturnVoid action.
+TEST(LinkTest, TestReturnVoid) {
+  Mock mock;
+
+  EXPECT_CALL(mock, VoidFromString(_)).WillOnce(Return());
+  mock.VoidFromString(nullptr);
+}
+
+// Tests the linkage of the Return action.
+TEST(LinkTest, TestReturn) {
+  Mock mock;
+  char ch = 'x';
+
+  EXPECT_CALL(mock, StringFromString(_)).WillOnce(Return(&ch));
+  mock.StringFromString(nullptr);
+}
+
+// Tests the linkage of the ReturnNull action.
+TEST(LinkTest, TestReturnNull) {
+  Mock mock;
+
+  EXPECT_CALL(mock, VoidFromString(_)).WillOnce(Return());
+  mock.VoidFromString(nullptr);
+}
+
+// Tests the linkage of the ReturnRef action.
+TEST(LinkTest, TestReturnRef) {
+  Mock mock;
+  int n = 42;
+
+  EXPECT_CALL(mock, IntRefFromString(_)).WillOnce(ReturnRef(n));
+  mock.IntRefFromString(nullptr);
+}
+
+// Tests the linkage of the Assign action.
+TEST(LinkTest, TestAssign) {
+  Mock mock;
+  char ch = 'x';
+
+  EXPECT_CALL(mock, VoidFromString(_)).WillOnce(Assign(&ch, 'y'));
+  mock.VoidFromString(nullptr);
+}
+
+// Tests the linkage of the SetArgPointee action.
+TEST(LinkTest, TestSetArgPointee) {
+  Mock mock;
+  char ch = 'x';
+
+  EXPECT_CALL(mock, VoidFromString(_)).WillOnce(SetArgPointee<0>('y'));
+  mock.VoidFromString(&ch);
+}
+
+// Tests the linkage of the SetArrayArgument action.
+TEST(LinkTest, TestSetArrayArgument) {
+  Mock mock;
+  char ch = 'x';
+  char ch2 = 'y';
+
+  EXPECT_CALL(mock, VoidFromString(_)).WillOnce(SetArrayArgument<0>(&ch2,
+                                                                    &ch2 + 1));
+  mock.VoidFromString(&ch);
+}
+
+#if !GTEST_OS_WINDOWS_MOBILE
+
+// Tests the linkage of the SetErrnoAndReturn action.
+TEST(LinkTest, TestSetErrnoAndReturn) {
+  Mock mock;
+
+  int saved_errno = errno;
+  EXPECT_CALL(mock, IntFromString(_)).WillOnce(SetErrnoAndReturn(1, -1));
+  mock.IntFromString(nullptr);
+  errno = saved_errno;
+}
+
+#endif  // !GTEST_OS_WINDOWS_MOBILE
+
+// Tests the linkage of the Invoke(function) and Invoke(object, method) actions.
+TEST(LinkTest, TestInvoke) {
+  Mock mock;
+  InvokeHelper test_invoke_helper;
+
+  EXPECT_CALL(mock, VoidFromString(_))
+      .WillOnce(Invoke(&InvokeHelper::StaticVoidFromString))
+      .WillOnce(Invoke(&test_invoke_helper, &InvokeHelper::VoidFromString));
+  mock.VoidFromString(nullptr);
+  mock.VoidFromString(nullptr);
+}
+
+// Tests the linkage of the InvokeWithoutArgs action.
+TEST(LinkTest, TestInvokeWithoutArgs) {
+  Mock mock;
+  InvokeHelper test_invoke_helper;
+
+  EXPECT_CALL(mock, VoidFromString(_))
+      .WillOnce(InvokeWithoutArgs(&InvokeHelper::StaticVoidFromVoid))
+      .WillOnce(InvokeWithoutArgs(&test_invoke_helper,
+                                  &InvokeHelper::VoidFromVoid));
+  mock.VoidFromString(nullptr);
+  mock.VoidFromString(nullptr);
+}
+
+// Tests the linkage of the InvokeArgument action.
+TEST(LinkTest, TestInvokeArgument) {
+  Mock mock;
+  char ch = 'x';
+
+  EXPECT_CALL(mock, VoidFromFunc(_)).WillOnce(InvokeArgument<0>(&ch));
+  mock.VoidFromFunc(InvokeHelper::StaticVoidFromString);
+}
+
+// Tests the linkage of the WithArg action.
+TEST(LinkTest, TestWithArg) {
+  Mock mock;
+
+  EXPECT_CALL(mock, VoidFromString(_))
+      .WillOnce(WithArg<0>(Invoke(&InvokeHelper::StaticVoidFromString)));
+  mock.VoidFromString(nullptr);
+}
+
+// Tests the linkage of the WithArgs action.
+TEST(LinkTest, TestWithArgs) {
+  Mock mock;
+
+  EXPECT_CALL(mock, VoidFromString(_))
+      .WillOnce(WithArgs<0>(Invoke(&InvokeHelper::StaticVoidFromString)));
+  mock.VoidFromString(nullptr);
+}
+
+// Tests the linkage of the WithoutArgs action.
+TEST(LinkTest, TestWithoutArgs) {
+  Mock mock;
+
+  EXPECT_CALL(mock, VoidFromString(_)).WillOnce(WithoutArgs(Return()));
+  mock.VoidFromString(nullptr);
+}
+
+// Tests the linkage of the DoAll action.
+TEST(LinkTest, TestDoAll) {
+  Mock mock;
+  char ch = 'x';
+
+  EXPECT_CALL(mock, VoidFromString(_))
+      .WillOnce(DoAll(SetArgPointee<0>('y'), Return()));
+  mock.VoidFromString(&ch);
+}
+
+// Tests the linkage of the DoDefault action.
+TEST(LinkTest, TestDoDefault) {
+  Mock mock;
+  char ch = 'x';
+
+  ON_CALL(mock, VoidFromString(_)).WillByDefault(Return());
+  EXPECT_CALL(mock, VoidFromString(_)).WillOnce(DoDefault());
+  mock.VoidFromString(&ch);
+}
+
+// Tests the linkage of the IgnoreResult action.
+TEST(LinkTest, TestIgnoreResult) {
+  Mock mock;
+
+  EXPECT_CALL(mock, VoidFromString(_)).WillOnce(IgnoreResult(Return(42)));
+  mock.VoidFromString(nullptr);
+}
+
+#if GTEST_HAS_EXCEPTIONS
+// Tests the linkage of the Throw action.
+TEST(LinkTest, TestThrow) {
+  Mock mock;
+
+  EXPECT_CALL(mock, VoidFromString(_)).WillOnce(Throw(42));
+  EXPECT_THROW(mock.VoidFromString(nullptr), int);
+}
+#endif  // GTEST_HAS_EXCEPTIONS
+
+// The ACTION*() macros trigger warning C4100 (unreferenced formal
+// parameter) in MSVC with -W4.  Unfortunately they cannot be fixed in
+// the macro definition, as the warnings are generated when the macro
+// is expanded and macro expansion cannot contain #pragma.  Therefore
+// we suppress them here.
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
+#endif
+
+// Tests the linkage of actions created using ACTION macro.
+namespace {
+ACTION(Return1) { return 1; }
+}
+
+TEST(LinkTest, TestActionMacro) {
+  Mock mock;
+
+  EXPECT_CALL(mock, IntFromString(_)).WillOnce(Return1());
+  mock.IntFromString(nullptr);
+}
+
+// Tests the linkage of actions created using ACTION_P macro.
+namespace {
+ACTION_P(ReturnArgument, ret_value) { return ret_value; }
+}
+
+TEST(LinkTest, TestActionPMacro) {
+  Mock mock;
+
+  EXPECT_CALL(mock, IntFromString(_)).WillOnce(ReturnArgument(42));
+  mock.IntFromString(nullptr);
+}
+
+// Tests the linkage of actions created using ACTION_P2 macro.
+namespace {
+ACTION_P2(ReturnEqualsEitherOf, first, second) {
+  return arg0 == first || arg0 == second;
+}
+}
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+TEST(LinkTest, TestActionP2Macro) {
+  Mock mock;
+  char ch = 'x';
+
+  EXPECT_CALL(mock, IntFromString(_))
+      .WillOnce(ReturnEqualsEitherOf("one", "two"));
+  mock.IntFromString(&ch);
+}
+
+// Tests the linkage of the "_" matcher.
+TEST(LinkTest, TestMatcherAnything) {
+  Mock mock;
+
+  ON_CALL(mock, VoidFromString(_)).WillByDefault(Return());
+}
+
+// Tests the linkage of the A matcher.
+TEST(LinkTest, TestMatcherA) {
+  Mock mock;
+
+  ON_CALL(mock, VoidFromString(A<char*>())).WillByDefault(Return());
+}
+
+// Tests the linkage of the Eq and the "bare value" matcher.
+TEST(LinkTest, TestMatchersEq) {
+  Mock mock;
+  const char* p = "x";
+
+  ON_CALL(mock, VoidFromString(Eq(p))).WillByDefault(Return());
+  ON_CALL(mock, VoidFromString(const_cast<char*>("y")))
+      .WillByDefault(Return());
+}
+
+// Tests the linkage of the Lt, Gt, Le, Ge, and Ne matchers.
+TEST(LinkTest, TestMatchersRelations) {
+  Mock mock;
+
+  ON_CALL(mock, VoidFromFloat(Lt(1.0f))).WillByDefault(Return());
+  ON_CALL(mock, VoidFromFloat(Gt(1.0f))).WillByDefault(Return());
+  ON_CALL(mock, VoidFromFloat(Le(1.0f))).WillByDefault(Return());
+  ON_CALL(mock, VoidFromFloat(Ge(1.0f))).WillByDefault(Return());
+  ON_CALL(mock, VoidFromFloat(Ne(1.0f))).WillByDefault(Return());
+}
+
+// Tests the linkage of the NotNull matcher.
+TEST(LinkTest, TestMatcherNotNull) {
+  Mock mock;
+
+  ON_CALL(mock, VoidFromString(NotNull())).WillByDefault(Return());
+}
+
+// Tests the linkage of the IsNull matcher.
+TEST(LinkTest, TestMatcherIsNull) {
+  Mock mock;
+
+  ON_CALL(mock, VoidFromString(IsNull())).WillByDefault(Return());
+}
+
+// Tests the linkage of the Ref matcher.
+TEST(LinkTest, TestMatcherRef) {
+  Mock mock;
+  int a = 0;
+
+  ON_CALL(mock, VoidFromIntRef(Ref(a))).WillByDefault(Return());
+}
+
+// Tests the linkage of the TypedEq matcher.
+TEST(LinkTest, TestMatcherTypedEq) {
+  Mock mock;
+  long a = 0;
+
+  ON_CALL(mock, VoidFromIntRef(TypedEq<int&>(a))).WillByDefault(Return());
+}
+
+// Tests the linkage of the FloatEq, DoubleEq, NanSensitiveFloatEq and
+// NanSensitiveDoubleEq matchers.
+TEST(LinkTest, TestMatchersFloatingPoint) {
+  Mock mock;
+  float a = 0;
+
+  ON_CALL(mock, VoidFromFloat(FloatEq(a))).WillByDefault(Return());
+  ON_CALL(mock, VoidFromDouble(DoubleEq(a))).WillByDefault(Return());
+  ON_CALL(mock, VoidFromFloat(NanSensitiveFloatEq(a))).WillByDefault(Return());
+  ON_CALL(mock, VoidFromDouble(NanSensitiveDoubleEq(a)))
+      .WillByDefault(Return());
+}
+
+// Tests the linkage of the ContainsRegex matcher.
+TEST(LinkTest, TestMatcherContainsRegex) {
+  Mock mock;
+
+  ON_CALL(mock, VoidFromString(ContainsRegex(".*"))).WillByDefault(Return());
+}
+
+// Tests the linkage of the MatchesRegex matcher.
+TEST(LinkTest, TestMatcherMatchesRegex) {
+  Mock mock;
+
+  ON_CALL(mock, VoidFromString(MatchesRegex(".*"))).WillByDefault(Return());
+}
+
+// Tests the linkage of the StartsWith, EndsWith, and HasSubstr matchers.
+TEST(LinkTest, TestMatchersSubstrings) {
+  Mock mock;
+
+  ON_CALL(mock, VoidFromString(StartsWith("a"))).WillByDefault(Return());
+  ON_CALL(mock, VoidFromString(EndsWith("c"))).WillByDefault(Return());
+  ON_CALL(mock, VoidFromString(HasSubstr("b"))).WillByDefault(Return());
+}
+
+// Tests the linkage of the StrEq, StrNe, StrCaseEq, and StrCaseNe matchers.
+TEST(LinkTest, TestMatchersStringEquality) {
+  Mock mock;
+  ON_CALL(mock, VoidFromString(StrEq("a"))).WillByDefault(Return());
+  ON_CALL(mock, VoidFromString(StrNe("a"))).WillByDefault(Return());
+  ON_CALL(mock, VoidFromString(StrCaseEq("a"))).WillByDefault(Return());
+  ON_CALL(mock, VoidFromString(StrCaseNe("a"))).WillByDefault(Return());
+}
+
+// Tests the linkage of the ElementsAre matcher.
+TEST(LinkTest, TestMatcherElementsAre) {
+  Mock mock;
+
+  ON_CALL(mock, VoidFromVector(ElementsAre('a', _))).WillByDefault(Return());
+}
+
+// Tests the linkage of the ElementsAreArray matcher.
+TEST(LinkTest, TestMatcherElementsAreArray) {
+  Mock mock;
+  char arr[] = { 'a', 'b' };
+
+  ON_CALL(mock, VoidFromVector(ElementsAreArray(arr))).WillByDefault(Return());
+}
+
+// Tests the linkage of the IsSubsetOf matcher.
+TEST(LinkTest, TestMatcherIsSubsetOf) {
+  Mock mock;
+  char arr[] = {'a', 'b'};
+
+  ON_CALL(mock, VoidFromVector(IsSubsetOf(arr))).WillByDefault(Return());
+}
+
+// Tests the linkage of the IsSupersetOf matcher.
+TEST(LinkTest, TestMatcherIsSupersetOf) {
+  Mock mock;
+  char arr[] = {'a', 'b'};
+
+  ON_CALL(mock, VoidFromVector(IsSupersetOf(arr))).WillByDefault(Return());
+}
+
+// Tests the linkage of the ContainerEq matcher.
+TEST(LinkTest, TestMatcherContainerEq) {
+  Mock mock;
+  std::vector<int> v;
+
+  ON_CALL(mock, VoidFromVector(ContainerEq(v))).WillByDefault(Return());
+}
+
+// Tests the linkage of the Field matcher.
+TEST(LinkTest, TestMatcherField) {
+  FieldHelper helper(0);
+
+  Matcher<const FieldHelper&> m = Field(&FieldHelper::field_, Eq(0));
+  EXPECT_TRUE(m.Matches(helper));
+
+  Matcher<const FieldHelper*> m2 = Field(&FieldHelper::field_, Eq(0));
+  EXPECT_TRUE(m2.Matches(&helper));
+}
+
+// Tests the linkage of the Property matcher.
+TEST(LinkTest, TestMatcherProperty) {
+  FieldHelper helper(0);
+
+  Matcher<const FieldHelper&> m = Property(&FieldHelper::field, Eq(0));
+  EXPECT_TRUE(m.Matches(helper));
+
+  Matcher<const FieldHelper*> m2 = Property(&FieldHelper::field, Eq(0));
+  EXPECT_TRUE(m2.Matches(&helper));
+}
+
+// Tests the linkage of the ResultOf matcher.
+TEST(LinkTest, TestMatcherResultOf) {
+  Matcher<char*> m = ResultOf(&InvokeHelper::StaticIntFromString, Eq(1));
+  EXPECT_TRUE(m.Matches(nullptr));
+}
+
+// Tests the linkage of the ResultOf matcher.
+TEST(LinkTest, TestMatcherPointee) {
+  int n = 1;
+
+  Matcher<int*> m = Pointee(Eq(1));
+  EXPECT_TRUE(m.Matches(&n));
+}
+
+// Tests the linkage of the Truly matcher.
+TEST(LinkTest, TestMatcherTruly) {
+  Matcher<const char*> m = Truly(&InvokeHelper::StaticBoolFromString);
+  EXPECT_TRUE(m.Matches(nullptr));
+}
+
+// Tests the linkage of the AllOf matcher.
+TEST(LinkTest, TestMatcherAllOf) {
+  Matcher<int> m = AllOf(_, Eq(1));
+  EXPECT_TRUE(m.Matches(1));
+}
+
+// Tests the linkage of the AnyOf matcher.
+TEST(LinkTest, TestMatcherAnyOf) {
+  Matcher<int> m = AnyOf(_, Eq(1));
+  EXPECT_TRUE(m.Matches(1));
+}
+
+// Tests the linkage of the Not matcher.
+TEST(LinkTest, TestMatcherNot) {
+  Matcher<int> m = Not(_);
+  EXPECT_FALSE(m.Matches(1));
+}
+
+// Tests the linkage of the MatcherCast<T>() function.
+TEST(LinkTest, TestMatcherCast) {
+  Matcher<const char*> m = MatcherCast<const char*>(_);
+  EXPECT_TRUE(m.Matches(nullptr));
+}
+
+#endif  // GMOCK_TEST_GMOCK_LINK_TEST_H_
diff --git a/build/_deps/googletest-src/googlemock/test/gmock_output_test.py b/build/_deps/googletest-src/googlemock/test/gmock_output_test.py
new file mode 100755
index 0000000000000000000000000000000000000000..25f99f2b7977dfe060c27ea9cf6598e36536915b
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock_output_test.py
@@ -0,0 +1,183 @@
+#!/usr/bin/env python
+#
+# Copyright 2008, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+r"""Tests the text output of Google C++ Mocking Framework.
+
+To update the golden file:
+gmock_output_test.py --build_dir=BUILD/DIR --gengolden
+where BUILD/DIR contains the built gmock_output_test_ file.
+gmock_output_test.py --gengolden
+gmock_output_test.py
+
+"""
+
+from io import open    # pylint: disable=redefined-builtin, g-importing-member
+import os
+import re
+import sys
+import gmock_test_utils
+
+
+# The flag for generating the golden file
+GENGOLDEN_FLAG = '--gengolden'
+
+PROGRAM_PATH = gmock_test_utils.GetTestExecutablePath('gmock_output_test_')
+COMMAND = [PROGRAM_PATH, '--gtest_stack_trace_depth=0', '--gtest_print_time=0']
+GOLDEN_NAME = 'gmock_output_test_golden.txt'
+GOLDEN_PATH = os.path.join(gmock_test_utils.GetSourceDir(), GOLDEN_NAME)
+
+
+def ToUnixLineEnding(s):
+  """Changes all Windows/Mac line endings in s to UNIX line endings."""
+
+  return s.replace('\r\n', '\n').replace('\r', '\n')
+
+
+def RemoveReportHeaderAndFooter(output):
+  """Removes Google Test result report's header and footer from the output."""
+
+  output = re.sub(r'.*gtest_main.*\n', '', output)
+  output = re.sub(r'\[.*\d+ tests.*\n', '', output)
+  output = re.sub(r'\[.* test environment .*\n', '', output)
+  output = re.sub(r'\[=+\] \d+ tests .* ran.*', '', output)
+  output = re.sub(r'.* FAILED TESTS\n', '', output)
+  return output
+
+
+def RemoveLocations(output):
+  """Removes all file location info from a Google Test program's output.
+
+  Args:
+       output:  the output of a Google Test program.
+
+  Returns:
+       output with all file location info (in the form of
+       'DIRECTORY/FILE_NAME:LINE_NUMBER: 'or
+       'DIRECTORY\\FILE_NAME(LINE_NUMBER): ') replaced by
+       'FILE:#: '.
+  """
+
+  return re.sub(r'.*[/\\](.+)(\:\d+|\(\d+\))\:', 'FILE:#:', output)
+
+
+def NormalizeErrorMarker(output):
+  """Normalizes the error marker, which is different on Windows vs on Linux."""
+
+  return re.sub(r' error: ', ' Failure\n', output)
+
+
+def RemoveMemoryAddresses(output):
+  """Removes memory addresses from the test output."""
+
+  return re.sub(r'@\w+', '@0x#', output)
+
+
+def RemoveTestNamesOfLeakedMocks(output):
+  """Removes the test names of leaked mock objects from the test output."""
+
+  return re.sub(r'\(used in test .+\) ', '', output)
+
+
+def GetLeakyTests(output):
+  """Returns a list of test names that leak mock objects."""
+
+  # findall() returns a list of all matches of the regex in output.
+  # For example, if '(used in test FooTest.Bar)' is in output, the
+  # list will contain 'FooTest.Bar'.
+  return re.findall(r'\(used in test (.+)\)', output)
+
+
+def GetNormalizedOutputAndLeakyTests(output):
+  """Normalizes the output of gmock_output_test_.
+
+  Args:
+    output: The test output.
+
+  Returns:
+    A tuple (the normalized test output, the list of test names that have
+    leaked mocks).
+  """
+
+  output = ToUnixLineEnding(output)
+  output = RemoveReportHeaderAndFooter(output)
+  output = NormalizeErrorMarker(output)
+  output = RemoveLocations(output)
+  output = RemoveMemoryAddresses(output)
+  return (RemoveTestNamesOfLeakedMocks(output), GetLeakyTests(output))
+
+
+def GetShellCommandOutput(cmd):
+  """Runs a command in a sub-process, and returns its STDOUT in a string."""
+
+  return gmock_test_utils.Subprocess(cmd, capture_stderr=False).output
+
+
+def GetNormalizedCommandOutputAndLeakyTests(cmd):
+  """Runs a command and returns its normalized output and a list of leaky tests.
+
+  Args:
+    cmd:  the shell command.
+  """
+
+  # Disables exception pop-ups on Windows.
+  os.environ['GTEST_CATCH_EXCEPTIONS'] = '1'
+  return GetNormalizedOutputAndLeakyTests(GetShellCommandOutput(cmd))
+
+
+class GMockOutputTest(gmock_test_utils.TestCase):
+
+  def testOutput(self):
+    (output, leaky_tests) = GetNormalizedCommandOutputAndLeakyTests(COMMAND)
+    golden_file = open(GOLDEN_PATH, 'rb')
+    golden = golden_file.read().decode('utf-8')
+    golden_file.close()
+
+    # The normalized output should match the golden file.
+    self.assertEquals(golden, output)
+
+    # The raw output should contain 2 leaked mock object errors for
+    # test GMockOutputTest.CatchesLeakedMocks.
+    self.assertEquals(['GMockOutputTest.CatchesLeakedMocks',
+                       'GMockOutputTest.CatchesLeakedMocks'],
+                      leaky_tests)
+
+
+if __name__ == '__main__':
+  if sys.argv[1:] == [GENGOLDEN_FLAG]:
+    (output, _) = GetNormalizedCommandOutputAndLeakyTests(COMMAND)
+    golden_file = open(GOLDEN_PATH, 'wb')
+    golden_file.write(output)
+    golden_file.close()
+    # Suppress the error "googletest was imported but a call to its main()
+    # was never detected."
+    os._exit(0)
+  else:
+    gmock_test_utils.Main()
diff --git a/build/_deps/googletest-src/googlemock/test/gmock_output_test_.cc b/build/_deps/googletest-src/googlemock/test/gmock_output_test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3955c7331a1233b60cb4f22e6f3a264472684d2f
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock_output_test_.cc
@@ -0,0 +1,309 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Tests Google Mock's output in various scenarios.  This ensures that
+// Google Mock's messages are readable and useful.
+
+#include "gmock/gmock.h"
+
+#include <stdio.h>
+#include <string>
+
+#include "gtest/gtest.h"
+
+// Silence C4100 (unreferenced formal parameter)
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4100)
+#endif
+
+using testing::_;
+using testing::AnyNumber;
+using testing::Ge;
+using testing::InSequence;
+using testing::NaggyMock;
+using testing::Ref;
+using testing::Return;
+using testing::Sequence;
+using testing::Value;
+
+class MockFoo {
+ public:
+  MockFoo() {}
+
+  MOCK_METHOD3(Bar, char(const std::string& s, int i, double x));
+  MOCK_METHOD2(Bar2, bool(int x, int y));
+  MOCK_METHOD2(Bar3, void(int x, int y));
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFoo);
+};
+
+class GMockOutputTest : public testing::Test {
+ protected:
+  NaggyMock<MockFoo> foo_;
+};
+
+TEST_F(GMockOutputTest, ExpectedCall) {
+  testing::GMOCK_FLAG(verbose) = "info";
+
+  EXPECT_CALL(foo_, Bar2(0, _));
+  foo_.Bar2(0, 0);  // Expected call
+
+  testing::GMOCK_FLAG(verbose) = "warning";
+}
+
+TEST_F(GMockOutputTest, ExpectedCallToVoidFunction) {
+  testing::GMOCK_FLAG(verbose) = "info";
+
+  EXPECT_CALL(foo_, Bar3(0, _));
+  foo_.Bar3(0, 0);  // Expected call
+
+  testing::GMOCK_FLAG(verbose) = "warning";
+}
+
+TEST_F(GMockOutputTest, ExplicitActionsRunOut) {
+  EXPECT_CALL(foo_, Bar2(_, _))
+      .Times(2)
+      .WillOnce(Return(false));
+  foo_.Bar2(2, 2);
+  foo_.Bar2(1, 1);  // Explicit actions in EXPECT_CALL run out.
+}
+
+TEST_F(GMockOutputTest, UnexpectedCall) {
+  EXPECT_CALL(foo_, Bar2(0, _));
+
+  foo_.Bar2(1, 0);  // Unexpected call
+  foo_.Bar2(0, 0);  // Expected call
+}
+
+TEST_F(GMockOutputTest, UnexpectedCallToVoidFunction) {
+  EXPECT_CALL(foo_, Bar3(0, _));
+
+  foo_.Bar3(1, 0);  // Unexpected call
+  foo_.Bar3(0, 0);  // Expected call
+}
+
+TEST_F(GMockOutputTest, ExcessiveCall) {
+  EXPECT_CALL(foo_, Bar2(0, _));
+
+  foo_.Bar2(0, 0);  // Expected call
+  foo_.Bar2(0, 1);  // Excessive call
+}
+
+TEST_F(GMockOutputTest, ExcessiveCallToVoidFunction) {
+  EXPECT_CALL(foo_, Bar3(0, _));
+
+  foo_.Bar3(0, 0);  // Expected call
+  foo_.Bar3(0, 1);  // Excessive call
+}
+
+TEST_F(GMockOutputTest, UninterestingCall) {
+  foo_.Bar2(0, 1);  // Uninteresting call
+}
+
+TEST_F(GMockOutputTest, UninterestingCallToVoidFunction) {
+  foo_.Bar3(0, 1);  // Uninteresting call
+}
+
+TEST_F(GMockOutputTest, RetiredExpectation) {
+  EXPECT_CALL(foo_, Bar2(_, _))
+      .RetiresOnSaturation();
+  EXPECT_CALL(foo_, Bar2(0, 0));
+
+  foo_.Bar2(1, 1);
+  foo_.Bar2(1, 1);  // Matches a retired expectation
+  foo_.Bar2(0, 0);
+}
+
+TEST_F(GMockOutputTest, UnsatisfiedPrerequisite) {
+  {
+    InSequence s;
+    EXPECT_CALL(foo_, Bar(_, 0, _));
+    EXPECT_CALL(foo_, Bar2(0, 0));
+    EXPECT_CALL(foo_, Bar2(1, _));
+  }
+
+  foo_.Bar2(1, 0);  // Has one immediate unsatisfied pre-requisite
+  foo_.Bar("Hi", 0, 0);
+  foo_.Bar2(0, 0);
+  foo_.Bar2(1, 0);
+}
+
+TEST_F(GMockOutputTest, UnsatisfiedPrerequisites) {
+  Sequence s1, s2;
+
+  EXPECT_CALL(foo_, Bar(_, 0, _))
+      .InSequence(s1);
+  EXPECT_CALL(foo_, Bar2(0, 0))
+      .InSequence(s2);
+  EXPECT_CALL(foo_, Bar2(1, _))
+      .InSequence(s1, s2);
+
+  foo_.Bar2(1, 0);  // Has two immediate unsatisfied pre-requisites
+  foo_.Bar("Hi", 0, 0);
+  foo_.Bar2(0, 0);
+  foo_.Bar2(1, 0);
+}
+
+TEST_F(GMockOutputTest, UnsatisfiedWith) {
+  EXPECT_CALL(foo_, Bar2(_, _)).With(Ge());
+}
+
+TEST_F(GMockOutputTest, UnsatisfiedExpectation) {
+  EXPECT_CALL(foo_, Bar(_, _, _));
+  EXPECT_CALL(foo_, Bar2(0, _))
+      .Times(2);
+
+  foo_.Bar2(0, 1);
+}
+
+TEST_F(GMockOutputTest, MismatchArguments) {
+  const std::string s = "Hi";
+  EXPECT_CALL(foo_, Bar(Ref(s), _, Ge(0)));
+
+  foo_.Bar("Ho", 0, -0.1);  // Mismatch arguments
+  foo_.Bar(s, 0, 0);
+}
+
+TEST_F(GMockOutputTest, MismatchWith) {
+  EXPECT_CALL(foo_, Bar2(Ge(2), Ge(1)))
+      .With(Ge());
+
+  foo_.Bar2(2, 3);  // Mismatch With()
+  foo_.Bar2(2, 1);
+}
+
+TEST_F(GMockOutputTest, MismatchArgumentsAndWith) {
+  EXPECT_CALL(foo_, Bar2(Ge(2), Ge(1)))
+      .With(Ge());
+
+  foo_.Bar2(1, 3);  // Mismatch arguments and mismatch With()
+  foo_.Bar2(2, 1);
+}
+
+TEST_F(GMockOutputTest, UnexpectedCallWithDefaultAction) {
+  ON_CALL(foo_, Bar2(_, _))
+      .WillByDefault(Return(true));   // Default action #1
+  ON_CALL(foo_, Bar2(1, _))
+      .WillByDefault(Return(false));  // Default action #2
+
+  EXPECT_CALL(foo_, Bar2(2, 2));
+  foo_.Bar2(1, 0);  // Unexpected call, takes default action #2.
+  foo_.Bar2(0, 0);  // Unexpected call, takes default action #1.
+  foo_.Bar2(2, 2);  // Expected call.
+}
+
+TEST_F(GMockOutputTest, ExcessiveCallWithDefaultAction) {
+  ON_CALL(foo_, Bar2(_, _))
+      .WillByDefault(Return(true));   // Default action #1
+  ON_CALL(foo_, Bar2(1, _))
+      .WillByDefault(Return(false));  // Default action #2
+
+  EXPECT_CALL(foo_, Bar2(2, 2));
+  EXPECT_CALL(foo_, Bar2(1, 1));
+
+  foo_.Bar2(2, 2);  // Expected call.
+  foo_.Bar2(2, 2);  // Excessive call, takes default action #1.
+  foo_.Bar2(1, 1);  // Expected call.
+  foo_.Bar2(1, 1);  // Excessive call, takes default action #2.
+}
+
+TEST_F(GMockOutputTest, UninterestingCallWithDefaultAction) {
+  ON_CALL(foo_, Bar2(_, _))
+      .WillByDefault(Return(true));   // Default action #1
+  ON_CALL(foo_, Bar2(1, _))
+      .WillByDefault(Return(false));  // Default action #2
+
+  foo_.Bar2(2, 2);  // Uninteresting call, takes default action #1.
+  foo_.Bar2(1, 1);  // Uninteresting call, takes default action #2.
+}
+
+TEST_F(GMockOutputTest, ExplicitActionsRunOutWithDefaultAction) {
+  ON_CALL(foo_, Bar2(_, _))
+      .WillByDefault(Return(true));   // Default action #1
+
+  EXPECT_CALL(foo_, Bar2(_, _))
+      .Times(2)
+      .WillOnce(Return(false));
+  foo_.Bar2(2, 2);
+  foo_.Bar2(1, 1);  // Explicit actions in EXPECT_CALL run out.
+}
+
+TEST_F(GMockOutputTest, CatchesLeakedMocks) {
+  MockFoo* foo1 = new MockFoo;
+  MockFoo* foo2 = new MockFoo;
+
+  // Invokes ON_CALL on foo1.
+  ON_CALL(*foo1, Bar(_, _, _)).WillByDefault(Return('a'));
+
+  // Invokes EXPECT_CALL on foo2.
+  EXPECT_CALL(*foo2, Bar2(_, _));
+  EXPECT_CALL(*foo2, Bar2(1, _));
+  EXPECT_CALL(*foo2, Bar3(_, _)).Times(AnyNumber());
+  foo2->Bar2(2, 1);
+  foo2->Bar2(1, 1);
+
+  // Both foo1 and foo2 are deliberately leaked.
+}
+
+MATCHER_P2(IsPair, first, second, "") {
+  return Value(arg.first, first) && Value(arg.second, second);
+}
+
+TEST_F(GMockOutputTest, PrintsMatcher) {
+  const testing::Matcher<int> m1 = Ge(48);
+  EXPECT_THAT((std::pair<int, bool>(42, true)), IsPair(m1, true));
+}
+
+void TestCatchesLeakedMocksInAdHocTests() {
+  MockFoo* foo = new MockFoo;
+
+  // Invokes EXPECT_CALL on foo.
+  EXPECT_CALL(*foo, Bar2(_, _));
+  foo->Bar2(2, 1);
+
+  // foo is deliberately leaked.
+}
+
+int main(int argc, char **argv) {
+  testing::InitGoogleMock(&argc, argv);
+  // Ensures that the tests pass no matter what value of
+  // --gmock_catch_leaked_mocks and --gmock_verbose the user specifies.
+  testing::GMOCK_FLAG(catch_leaked_mocks) = true;
+  testing::GMOCK_FLAG(verbose) = "warning";
+
+  TestCatchesLeakedMocksInAdHocTests();
+  return RUN_ALL_TESTS();
+}
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
diff --git a/build/_deps/googletest-src/googlemock/test/gmock_output_test_golden.txt b/build/_deps/googletest-src/googlemock/test/gmock_output_test_golden.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4c90b41a3abc0b3fad262652b7faf25c7856bba3
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock_output_test_golden.txt
@@ -0,0 +1,317 @@
+[ RUN      ] GMockOutputTest.ExpectedCall
+
+FILE:#: EXPECT_CALL(foo_, Bar2(0, _)) invoked
+Stack trace:
+
+FILE:#: Mock function call matches EXPECT_CALL(foo_, Bar2(0, _))...
+    Function call: Bar2(0, 0)
+          Returns: false
+Stack trace:
+[       OK ] GMockOutputTest.ExpectedCall
+[ RUN      ] GMockOutputTest.ExpectedCallToVoidFunction
+
+FILE:#: EXPECT_CALL(foo_, Bar3(0, _)) invoked
+Stack trace:
+
+FILE:#: Mock function call matches EXPECT_CALL(foo_, Bar3(0, _))...
+    Function call: Bar3(0, 0)
+Stack trace:
+[       OK ] GMockOutputTest.ExpectedCallToVoidFunction
+[ RUN      ] GMockOutputTest.ExplicitActionsRunOut
+
+GMOCK WARNING:
+FILE:#: Too few actions specified in EXPECT_CALL(foo_, Bar2(_, _))...
+Expected to be called twice, but has only 1 WillOnce().
+GMOCK WARNING:
+FILE:#: Actions ran out in EXPECT_CALL(foo_, Bar2(_, _))...
+Called 2 times, but only 1 WillOnce() is specified - returning default value.
+Stack trace:
+[       OK ] GMockOutputTest.ExplicitActionsRunOut
+[ RUN      ] GMockOutputTest.UnexpectedCall
+unknown file: Failure
+
+Unexpected mock function call - returning default value.
+    Function call: Bar2(1, 0)
+          Returns: false
+Google Mock tried the following 1 expectation, but it didn't match:
+
+FILE:#: EXPECT_CALL(foo_, Bar2(0, _))...
+  Expected arg #0: is equal to 0
+           Actual: 1
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+[  FAILED  ] GMockOutputTest.UnexpectedCall
+[ RUN      ] GMockOutputTest.UnexpectedCallToVoidFunction
+unknown file: Failure
+
+Unexpected mock function call - returning directly.
+    Function call: Bar3(1, 0)
+Google Mock tried the following 1 expectation, but it didn't match:
+
+FILE:#: EXPECT_CALL(foo_, Bar3(0, _))...
+  Expected arg #0: is equal to 0
+           Actual: 1
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+[  FAILED  ] GMockOutputTest.UnexpectedCallToVoidFunction
+[ RUN      ] GMockOutputTest.ExcessiveCall
+FILE:#: Failure
+Mock function called more times than expected - returning default value.
+    Function call: Bar2(0, 1)
+          Returns: false
+         Expected: to be called once
+           Actual: called twice - over-saturated and active
+[  FAILED  ] GMockOutputTest.ExcessiveCall
+[ RUN      ] GMockOutputTest.ExcessiveCallToVoidFunction
+FILE:#: Failure
+Mock function called more times than expected - returning directly.
+    Function call: Bar3(0, 1)
+         Expected: to be called once
+           Actual: called twice - over-saturated and active
+[  FAILED  ] GMockOutputTest.ExcessiveCallToVoidFunction
+[ RUN      ] GMockOutputTest.UninterestingCall
+
+GMOCK WARNING:
+Uninteresting mock function call - returning default value.
+    Function call: Bar2(0, 1)
+          Returns: false
+NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md#knowing-when-to-expect for details.
+[       OK ] GMockOutputTest.UninterestingCall
+[ RUN      ] GMockOutputTest.UninterestingCallToVoidFunction
+
+GMOCK WARNING:
+Uninteresting mock function call - returning directly.
+    Function call: Bar3(0, 1)
+NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md#knowing-when-to-expect for details.
+[       OK ] GMockOutputTest.UninterestingCallToVoidFunction
+[ RUN      ] GMockOutputTest.RetiredExpectation
+unknown file: Failure
+
+Unexpected mock function call - returning default value.
+    Function call: Bar2(1, 1)
+          Returns: false
+Google Mock tried the following 2 expectations, but none matched:
+
+FILE:#: tried expectation #0: EXPECT_CALL(foo_, Bar2(_, _))...
+         Expected: the expectation is active
+           Actual: it is retired
+         Expected: to be called once
+           Actual: called once - saturated and retired
+FILE:#: tried expectation #1: EXPECT_CALL(foo_, Bar2(0, 0))...
+  Expected arg #0: is equal to 0
+           Actual: 1
+  Expected arg #1: is equal to 0
+           Actual: 1
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+[  FAILED  ] GMockOutputTest.RetiredExpectation
+[ RUN      ] GMockOutputTest.UnsatisfiedPrerequisite
+unknown file: Failure
+
+Unexpected mock function call - returning default value.
+    Function call: Bar2(1, 0)
+          Returns: false
+Google Mock tried the following 2 expectations, but none matched:
+
+FILE:#: tried expectation #0: EXPECT_CALL(foo_, Bar2(0, 0))...
+  Expected arg #0: is equal to 0
+           Actual: 1
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+FILE:#: tried expectation #1: EXPECT_CALL(foo_, Bar2(1, _))...
+         Expected: all pre-requisites are satisfied
+           Actual: the following immediate pre-requisites are not satisfied:
+FILE:#: pre-requisite #0
+                   (end of pre-requisites)
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+[  FAILED  ] GMockOutputTest.UnsatisfiedPrerequisite
+[ RUN      ] GMockOutputTest.UnsatisfiedPrerequisites
+unknown file: Failure
+
+Unexpected mock function call - returning default value.
+    Function call: Bar2(1, 0)
+          Returns: false
+Google Mock tried the following 2 expectations, but none matched:
+
+FILE:#: tried expectation #0: EXPECT_CALL(foo_, Bar2(0, 0))...
+  Expected arg #0: is equal to 0
+           Actual: 1
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+FILE:#: tried expectation #1: EXPECT_CALL(foo_, Bar2(1, _))...
+         Expected: all pre-requisites are satisfied
+           Actual: the following immediate pre-requisites are not satisfied:
+FILE:#: pre-requisite #0
+FILE:#: pre-requisite #1
+                   (end of pre-requisites)
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+[  FAILED  ] GMockOutputTest.UnsatisfiedPrerequisites
+[ RUN      ] GMockOutputTest.UnsatisfiedWith
+FILE:#: Failure
+Actual function call count doesn't match EXPECT_CALL(foo_, Bar2(_, _))...
+    Expected args: are a pair where the first >= the second
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+[  FAILED  ] GMockOutputTest.UnsatisfiedWith
+[ RUN      ] GMockOutputTest.UnsatisfiedExpectation
+FILE:#: Failure
+Actual function call count doesn't match EXPECT_CALL(foo_, Bar2(0, _))...
+         Expected: to be called twice
+           Actual: called once - unsatisfied and active
+FILE:#: Failure
+Actual function call count doesn't match EXPECT_CALL(foo_, Bar(_, _, _))...
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+[  FAILED  ] GMockOutputTest.UnsatisfiedExpectation
+[ RUN      ] GMockOutputTest.MismatchArguments
+unknown file: Failure
+
+Unexpected mock function call - returning default value.
+    Function call: Bar(@0x# "Ho", 0, -0.1)
+          Returns: '\0'
+Google Mock tried the following 1 expectation, but it didn't match:
+
+FILE:#: EXPECT_CALL(foo_, Bar(Ref(s), _, Ge(0)))...
+  Expected arg #0: references the variable @0x# "Hi"
+           Actual: "Ho", which is located @0x#
+  Expected arg #2: is >= 0
+           Actual: -0.1
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+[  FAILED  ] GMockOutputTest.MismatchArguments
+[ RUN      ] GMockOutputTest.MismatchWith
+unknown file: Failure
+
+Unexpected mock function call - returning default value.
+    Function call: Bar2(2, 3)
+          Returns: false
+Google Mock tried the following 1 expectation, but it didn't match:
+
+FILE:#: EXPECT_CALL(foo_, Bar2(Ge(2), Ge(1)))...
+    Expected args: are a pair where the first >= the second
+           Actual: don't match
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+[  FAILED  ] GMockOutputTest.MismatchWith
+[ RUN      ] GMockOutputTest.MismatchArgumentsAndWith
+unknown file: Failure
+
+Unexpected mock function call - returning default value.
+    Function call: Bar2(1, 3)
+          Returns: false
+Google Mock tried the following 1 expectation, but it didn't match:
+
+FILE:#: EXPECT_CALL(foo_, Bar2(Ge(2), Ge(1)))...
+  Expected arg #0: is >= 2
+           Actual: 1
+    Expected args: are a pair where the first >= the second
+           Actual: don't match
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+[  FAILED  ] GMockOutputTest.MismatchArgumentsAndWith
+[ RUN      ] GMockOutputTest.UnexpectedCallWithDefaultAction
+unknown file: Failure
+
+Unexpected mock function call - taking default action specified at:
+FILE:#:
+    Function call: Bar2(1, 0)
+          Returns: false
+Google Mock tried the following 1 expectation, but it didn't match:
+
+FILE:#: EXPECT_CALL(foo_, Bar2(2, 2))...
+  Expected arg #0: is equal to 2
+           Actual: 1
+  Expected arg #1: is equal to 2
+           Actual: 0
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+unknown file: Failure
+
+Unexpected mock function call - taking default action specified at:
+FILE:#:
+    Function call: Bar2(0, 0)
+          Returns: true
+Google Mock tried the following 1 expectation, but it didn't match:
+
+FILE:#: EXPECT_CALL(foo_, Bar2(2, 2))...
+  Expected arg #0: is equal to 2
+           Actual: 0
+  Expected arg #1: is equal to 2
+           Actual: 0
+         Expected: to be called once
+           Actual: never called - unsatisfied and active
+[  FAILED  ] GMockOutputTest.UnexpectedCallWithDefaultAction
+[ RUN      ] GMockOutputTest.ExcessiveCallWithDefaultAction
+FILE:#: Failure
+Mock function called more times than expected - taking default action specified at:
+FILE:#:
+    Function call: Bar2(2, 2)
+          Returns: true
+         Expected: to be called once
+           Actual: called twice - over-saturated and active
+FILE:#: Failure
+Mock function called more times than expected - taking default action specified at:
+FILE:#:
+    Function call: Bar2(1, 1)
+          Returns: false
+         Expected: to be called once
+           Actual: called twice - over-saturated and active
+[  FAILED  ] GMockOutputTest.ExcessiveCallWithDefaultAction
+[ RUN      ] GMockOutputTest.UninterestingCallWithDefaultAction
+
+GMOCK WARNING:
+Uninteresting mock function call - taking default action specified at:
+FILE:#:
+    Function call: Bar2(2, 2)
+          Returns: true
+NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md#knowing-when-to-expect for details.
+
+GMOCK WARNING:
+Uninteresting mock function call - taking default action specified at:
+FILE:#:
+    Function call: Bar2(1, 1)
+          Returns: false
+NOTE: You can safely ignore the above warning unless this call should not happen.  Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call.  See https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md#knowing-when-to-expect for details.
+[       OK ] GMockOutputTest.UninterestingCallWithDefaultAction
+[ RUN      ] GMockOutputTest.ExplicitActionsRunOutWithDefaultAction
+
+GMOCK WARNING:
+FILE:#: Too few actions specified in EXPECT_CALL(foo_, Bar2(_, _))...
+Expected to be called twice, but has only 1 WillOnce().
+GMOCK WARNING:
+FILE:#: Actions ran out in EXPECT_CALL(foo_, Bar2(_, _))...
+Called 2 times, but only 1 WillOnce() is specified - taking default action specified at:
+FILE:#:
+Stack trace:
+[       OK ] GMockOutputTest.ExplicitActionsRunOutWithDefaultAction
+[ RUN      ] GMockOutputTest.CatchesLeakedMocks
+[       OK ] GMockOutputTest.CatchesLeakedMocks
+[ RUN      ] GMockOutputTest.PrintsMatcher
+FILE:#: Failure
+Value of: (std::pair<int, bool>(42, true))
+Expected: is pair (is >= 48, true)
+  Actual: (42, true) (of type std::pair<int, bool>)
+[  FAILED  ] GMockOutputTest.PrintsMatcher
+[  FAILED  ] GMockOutputTest.UnexpectedCall
+[  FAILED  ] GMockOutputTest.UnexpectedCallToVoidFunction
+[  FAILED  ] GMockOutputTest.ExcessiveCall
+[  FAILED  ] GMockOutputTest.ExcessiveCallToVoidFunction
+[  FAILED  ] GMockOutputTest.RetiredExpectation
+[  FAILED  ] GMockOutputTest.UnsatisfiedPrerequisite
+[  FAILED  ] GMockOutputTest.UnsatisfiedPrerequisites
+[  FAILED  ] GMockOutputTest.UnsatisfiedWith
+[  FAILED  ] GMockOutputTest.UnsatisfiedExpectation
+[  FAILED  ] GMockOutputTest.MismatchArguments
+[  FAILED  ] GMockOutputTest.MismatchWith
+[  FAILED  ] GMockOutputTest.MismatchArgumentsAndWith
+[  FAILED  ] GMockOutputTest.UnexpectedCallWithDefaultAction
+[  FAILED  ] GMockOutputTest.ExcessiveCallWithDefaultAction
+[  FAILED  ] GMockOutputTest.PrintsMatcher
+
+
+FILE:#: ERROR: this mock object should be deleted but never is. Its address is @0x#.
+FILE:#: ERROR: this mock object should be deleted but never is. Its address is @0x#.
+FILE:#: ERROR: this mock object should be deleted but never is. Its address is @0x#.
+ERROR: 3 leaked mock objects found at program exit. Expectations on a mock object is verified when the object is destructed. Leaking a mock means that its expectations aren't verified, which is usually a test bug. If you really intend to leak a mock, you can suppress this error using testing::Mock::AllowLeak(mock_object), or you may use a fake or stub instead of a mock.
diff --git a/build/_deps/googletest-src/googlemock/test/gmock_stress_test.cc b/build/_deps/googletest-src/googlemock/test/gmock_stress_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..20725d69b7bf76fab1f8d91f59ff8d024588cae3
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock_stress_test.cc
@@ -0,0 +1,240 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Tests that Google Mock constructs can be used in a large number of
+// threads concurrently.
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+namespace testing {
+namespace {
+
+// From gtest-port.h.
+using ::testing::internal::ThreadWithParam;
+
+// The maximum number of test threads (not including helper threads)
+// to create.
+const int kMaxTestThreads = 50;
+
+// How many times to repeat a task in a test thread.
+const int kRepeat = 50;
+
+class MockFoo {
+ public:
+  MOCK_METHOD1(Bar, int(int n));  // NOLINT
+  MOCK_METHOD2(Baz, char(const char* s1, const std::string& s2));  // NOLINT
+};
+
+// Helper for waiting for the given thread to finish and then deleting it.
+template <typename T>
+void JoinAndDelete(ThreadWithParam<T>* t) {
+  t->Join();
+  delete t;
+}
+
+struct Dummy {};
+
+
+// Tests that different mock objects can be used in their respective
+// threads.  This should generate no Google Test failure.
+void TestConcurrentMockObjects(Dummy /* dummy */) {
+  // Creates a mock and does some typical operations on it.
+  MockFoo foo;
+  ON_CALL(foo, Bar(_))
+      .WillByDefault(Return(1));
+  ON_CALL(foo, Baz(_, _))
+      .WillByDefault(Return('b'));
+  ON_CALL(foo, Baz(_, "you"))
+      .WillByDefault(Return('a'));
+
+  EXPECT_CALL(foo, Bar(0))
+      .Times(AtMost(3));
+  EXPECT_CALL(foo, Baz(_, _));
+  EXPECT_CALL(foo, Baz("hi", "you"))
+      .WillOnce(Return('z'))
+      .WillRepeatedly(DoDefault());
+
+  EXPECT_EQ(1, foo.Bar(0));
+  EXPECT_EQ(1, foo.Bar(0));
+  EXPECT_EQ('z', foo.Baz("hi", "you"));
+  EXPECT_EQ('a', foo.Baz("hi", "you"));
+  EXPECT_EQ('b', foo.Baz("hi", "me"));
+}
+
+// Tests invoking methods of the same mock object in multiple threads.
+
+struct Helper1Param {
+  MockFoo* mock_foo;
+  int* count;
+};
+
+void Helper1(Helper1Param param) {
+  for (int i = 0; i < kRepeat; i++) {
+    const char ch = param.mock_foo->Baz("a", "b");
+    if (ch == 'a') {
+      // It was an expected call.
+      (*param.count)++;
+    } else {
+      // It was an excessive call.
+      EXPECT_EQ('\0', ch);
+    }
+
+    // An unexpected call.
+    EXPECT_EQ('\0', param.mock_foo->Baz("x", "y")) << "Expected failure.";
+
+    // An uninteresting call.
+    EXPECT_EQ(1, param.mock_foo->Bar(5));
+  }
+}
+
+// This should generate 3*kRepeat + 1 failures in total.
+void TestConcurrentCallsOnSameObject(Dummy /* dummy */) {
+  MockFoo foo;
+
+  ON_CALL(foo, Bar(_))
+      .WillByDefault(Return(1));
+  EXPECT_CALL(foo, Baz(_, "b"))
+      .Times(kRepeat)
+      .WillRepeatedly(Return('a'));
+  EXPECT_CALL(foo, Baz(_, "c"));  // Expected to be unsatisfied.
+
+  // This chunk of code should generate kRepeat failures about
+  // excessive calls, and 2*kRepeat failures about unexpected calls.
+  int count1 = 0;
+  const Helper1Param param = { &foo, &count1 };
+  ThreadWithParam<Helper1Param>* const t =
+      new ThreadWithParam<Helper1Param>(Helper1, param, nullptr);
+
+  int count2 = 0;
+  const Helper1Param param2 = { &foo, &count2 };
+  Helper1(param2);
+  JoinAndDelete(t);
+
+  EXPECT_EQ(kRepeat, count1 + count2);
+
+  // foo's destructor should generate one failure about unsatisfied
+  // expectation.
+}
+
+// Tests using the same mock object in multiple threads when the
+// expectations are partially ordered.
+
+void Helper2(MockFoo* foo) {
+  for (int i = 0; i < kRepeat; i++) {
+    foo->Bar(2);
+    foo->Bar(3);
+  }
+}
+
+// This should generate no Google Test failures.
+void TestPartiallyOrderedExpectationsWithThreads(Dummy /* dummy */) {
+  MockFoo foo;
+  Sequence s1, s2;
+
+  {
+    InSequence dummy;
+    EXPECT_CALL(foo, Bar(0));
+    EXPECT_CALL(foo, Bar(1))
+        .InSequence(s1, s2);
+  }
+
+  EXPECT_CALL(foo, Bar(2))
+      .Times(2*kRepeat)
+      .InSequence(s1)
+      .RetiresOnSaturation();
+  EXPECT_CALL(foo, Bar(3))
+      .Times(2*kRepeat)
+      .InSequence(s2);
+
+  {
+    InSequence dummy;
+    EXPECT_CALL(foo, Bar(2))
+        .InSequence(s1, s2);
+    EXPECT_CALL(foo, Bar(4));
+  }
+
+  foo.Bar(0);
+  foo.Bar(1);
+
+  ThreadWithParam<MockFoo*>* const t =
+      new ThreadWithParam<MockFoo*>(Helper2, &foo, nullptr);
+  Helper2(&foo);
+  JoinAndDelete(t);
+
+  foo.Bar(2);
+  foo.Bar(4);
+}
+
+// Tests using Google Mock constructs in many threads concurrently.
+TEST(StressTest, CanUseGMockWithThreads) {
+  void (*test_routines[])(Dummy dummy) = {
+    &TestConcurrentMockObjects,
+    &TestConcurrentCallsOnSameObject,
+    &TestPartiallyOrderedExpectationsWithThreads,
+  };
+
+  const int kRoutines = sizeof(test_routines)/sizeof(test_routines[0]);
+  const int kCopiesOfEachRoutine = kMaxTestThreads / kRoutines;
+  const int kTestThreads = kCopiesOfEachRoutine * kRoutines;
+  ThreadWithParam<Dummy>* threads[kTestThreads] = {};
+  for (int i = 0; i < kTestThreads; i++) {
+    // Creates a thread to run the test function.
+    threads[i] = new ThreadWithParam<Dummy>(test_routines[i % kRoutines],
+                                            Dummy(), nullptr);
+    GTEST_LOG_(INFO) << "Thread #" << i << " running . . .";
+  }
+
+  // At this point, we have many threads running.
+  for (int i = 0; i < kTestThreads; i++) {
+    JoinAndDelete(threads[i]);
+  }
+
+  // Ensures that the correct number of failures have been reported.
+  const TestInfo* const info = UnitTest::GetInstance()->current_test_info();
+  const TestResult& result = *info->result();
+  const int kExpectedFailures = (3*kRepeat + 1)*kCopiesOfEachRoutine;
+  GTEST_CHECK_(kExpectedFailures == result.total_part_count())
+      << "Expected " << kExpectedFailures << " failures, but got "
+      << result.total_part_count();
+}
+
+}  // namespace
+}  // namespace testing
+
+int main(int argc, char **argv) {
+  testing::InitGoogleMock(&argc, argv);
+
+  const int exit_code = RUN_ALL_TESTS();  // Expected to fail.
+  GTEST_CHECK_(exit_code != 0) << "RUN_ALL_TESTS() did not fail as expected";
+
+  printf("\nPASS\n");
+  return 0;
+}
diff --git a/build/_deps/googletest-src/googlemock/test/gmock_test.cc b/build/_deps/googletest-src/googlemock/test/gmock_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e9840a337db87d13052f5f416bbc48a1845f1aa8
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock_test.cc
@@ -0,0 +1,181 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file tests code in gmock.cc.
+
+#include "gmock/gmock.h"
+
+#include <string>
+#include "gtest/gtest.h"
+#include "gtest/internal/custom/gtest.h"
+
+#if !defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+
+using testing::GMOCK_FLAG(default_mock_behavior);
+using testing::GMOCK_FLAG(verbose);
+using testing::InitGoogleMock;
+
+// Verifies that calling InitGoogleMock() on argv results in new_argv,
+// and the gmock_verbose flag's value is set to expected_gmock_verbose.
+template <typename Char, int M, int N>
+void TestInitGoogleMock(const Char* (&argv)[M], const Char* (&new_argv)[N],
+                        const ::std::string& expected_gmock_verbose) {
+  const ::std::string old_verbose = GMOCK_FLAG(verbose);
+
+  int argc = M - 1;
+  InitGoogleMock(&argc, const_cast<Char**>(argv));
+  ASSERT_EQ(N - 1, argc) << "The new argv has wrong number of elements.";
+
+  for (int i = 0; i < N; i++) {
+    EXPECT_STREQ(new_argv[i], argv[i]);
+  }
+
+  EXPECT_EQ(expected_gmock_verbose, GMOCK_FLAG(verbose).c_str());
+  GMOCK_FLAG(verbose) = old_verbose;  // Restores the gmock_verbose flag.
+}
+
+TEST(InitGoogleMockTest, ParsesInvalidCommandLine) {
+  const char* argv[] = {nullptr};
+
+  const char* new_argv[] = {nullptr};
+
+  TestInitGoogleMock(argv, new_argv, GMOCK_FLAG(verbose));
+}
+
+TEST(InitGoogleMockTest, ParsesEmptyCommandLine) {
+  const char* argv[] = {"foo.exe", nullptr};
+
+  const char* new_argv[] = {"foo.exe", nullptr};
+
+  TestInitGoogleMock(argv, new_argv, GMOCK_FLAG(verbose));
+}
+
+TEST(InitGoogleMockTest, ParsesSingleFlag) {
+  const char* argv[] = {"foo.exe", "--gmock_verbose=info", nullptr};
+
+  const char* new_argv[] = {"foo.exe", nullptr};
+
+  TestInitGoogleMock(argv, new_argv, "info");
+}
+
+TEST(InitGoogleMockTest, ParsesMultipleFlags) {
+  int old_default_behavior = GMOCK_FLAG(default_mock_behavior);
+  const wchar_t* argv[] = {L"foo.exe", L"--gmock_verbose=info",
+                           L"--gmock_default_mock_behavior=2", nullptr};
+
+  const wchar_t* new_argv[] = {L"foo.exe", nullptr};
+
+  TestInitGoogleMock(argv, new_argv, "info");
+  EXPECT_EQ(2, GMOCK_FLAG(default_mock_behavior));
+  EXPECT_NE(2, old_default_behavior);
+  GMOCK_FLAG(default_mock_behavior) = old_default_behavior;
+}
+
+TEST(InitGoogleMockTest, ParsesUnrecognizedFlag) {
+  const char* argv[] = {"foo.exe", "--non_gmock_flag=blah", nullptr};
+
+  const char* new_argv[] = {"foo.exe", "--non_gmock_flag=blah", nullptr};
+
+  TestInitGoogleMock(argv, new_argv, GMOCK_FLAG(verbose));
+}
+
+TEST(InitGoogleMockTest, ParsesGoogleMockFlagAndUnrecognizedFlag) {
+  const char* argv[] = {"foo.exe", "--non_gmock_flag=blah",
+                        "--gmock_verbose=error", nullptr};
+
+  const char* new_argv[] = {"foo.exe", "--non_gmock_flag=blah", nullptr};
+
+  TestInitGoogleMock(argv, new_argv, "error");
+}
+
+TEST(WideInitGoogleMockTest, ParsesInvalidCommandLine) {
+  const wchar_t* argv[] = {nullptr};
+
+  const wchar_t* new_argv[] = {nullptr};
+
+  TestInitGoogleMock(argv, new_argv, GMOCK_FLAG(verbose));
+}
+
+TEST(WideInitGoogleMockTest, ParsesEmptyCommandLine) {
+  const wchar_t* argv[] = {L"foo.exe", nullptr};
+
+  const wchar_t* new_argv[] = {L"foo.exe", nullptr};
+
+  TestInitGoogleMock(argv, new_argv, GMOCK_FLAG(verbose));
+}
+
+TEST(WideInitGoogleMockTest, ParsesSingleFlag) {
+  const wchar_t* argv[] = {L"foo.exe", L"--gmock_verbose=info", nullptr};
+
+  const wchar_t* new_argv[] = {L"foo.exe", nullptr};
+
+  TestInitGoogleMock(argv, new_argv, "info");
+}
+
+TEST(WideInitGoogleMockTest, ParsesMultipleFlags) {
+  int old_default_behavior = GMOCK_FLAG(default_mock_behavior);
+  const wchar_t* argv[] = {L"foo.exe", L"--gmock_verbose=info",
+                           L"--gmock_default_mock_behavior=2", nullptr};
+
+  const wchar_t* new_argv[] = {L"foo.exe", nullptr};
+
+  TestInitGoogleMock(argv, new_argv, "info");
+  EXPECT_EQ(2, GMOCK_FLAG(default_mock_behavior));
+  EXPECT_NE(2, old_default_behavior);
+  GMOCK_FLAG(default_mock_behavior) = old_default_behavior;
+}
+
+TEST(WideInitGoogleMockTest, ParsesUnrecognizedFlag) {
+  const wchar_t* argv[] = {L"foo.exe", L"--non_gmock_flag=blah", nullptr};
+
+  const wchar_t* new_argv[] = {L"foo.exe", L"--non_gmock_flag=blah", nullptr};
+
+  TestInitGoogleMock(argv, new_argv, GMOCK_FLAG(verbose));
+}
+
+TEST(WideInitGoogleMockTest, ParsesGoogleMockFlagAndUnrecognizedFlag) {
+  const wchar_t* argv[] = {L"foo.exe", L"--non_gmock_flag=blah",
+                           L"--gmock_verbose=error", nullptr};
+
+  const wchar_t* new_argv[] = {L"foo.exe", L"--non_gmock_flag=blah", nullptr};
+
+  TestInitGoogleMock(argv, new_argv, "error");
+}
+
+#endif  // !defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+
+// Makes sure Google Mock flags can be accessed in code.
+TEST(FlagTest, IsAccessibleInCode) {
+  bool dummy = testing::GMOCK_FLAG(catch_leaked_mocks) &&
+      testing::GMOCK_FLAG(verbose) == "";
+  (void)dummy;  // Avoids the "unused local variable" warning.
+}
diff --git a/build/_deps/googletest-src/googlemock/test/gmock_test_utils.py b/build/_deps/googletest-src/googlemock/test/gmock_test_utils.py
new file mode 100755
index 0000000000000000000000000000000000000000..7dc4e119d3c5b97c3815e6b0d2602770240cce1d
--- /dev/null
+++ b/build/_deps/googletest-src/googlemock/test/gmock_test_utils.py
@@ -0,0 +1,108 @@
+# Copyright 2006, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Unit test utilities for Google C++ Mocking Framework."""
+
+import os
+import sys
+
+# Determines path to gtest_test_utils and imports it.
+SCRIPT_DIR = os.path.dirname(__file__) or '.'
+
+# isdir resolves symbolic links.
+gtest_tests_util_dir = os.path.join(SCRIPT_DIR, '../../googletest/test')
+if os.path.isdir(gtest_tests_util_dir):
+  GTEST_TESTS_UTIL_DIR = gtest_tests_util_dir
+else:
+  GTEST_TESTS_UTIL_DIR = os.path.join(SCRIPT_DIR, '../../googletest/test')
+sys.path.append(GTEST_TESTS_UTIL_DIR)
+
+# pylint: disable=C6204
+import gtest_test_utils
+
+
+def GetSourceDir():
+  """Returns the absolute path of the directory where the .py files are."""
+
+  return gtest_test_utils.GetSourceDir()
+
+
+def GetTestExecutablePath(executable_name):
+  """Returns the absolute path of the test binary given its name.
+
+  The function will print a message and abort the program if the resulting file
+  doesn't exist.
+
+  Args:
+    executable_name: name of the test binary that the test script runs.
+
+  Returns:
+    The absolute path of the test binary.
+  """
+
+  return gtest_test_utils.GetTestExecutablePath(executable_name)
+
+
+def GetExitStatus(exit_code):
+  """Returns the argument to exit(), or -1 if exit() wasn't called.
+
+  Args:
+    exit_code: the result value of os.system(command).
+  """
+
+  if os.name == 'nt':
+    # On Windows, os.WEXITSTATUS() doesn't work and os.system() returns
+    # the argument to exit() directly.
+    return exit_code
+  else:
+    # On Unix, os.WEXITSTATUS() must be used to extract the exit status
+    # from the result of os.system().
+    if os.WIFEXITED(exit_code):
+      return os.WEXITSTATUS(exit_code)
+    else:
+      return -1
+
+
+# Suppresses the "Invalid const name" lint complaint
+# pylint: disable-msg=C6409
+
+# Exposes utilities from gtest_test_utils.
+Subprocess = gtest_test_utils.Subprocess
+TestCase = gtest_test_utils.TestCase
+environ = gtest_test_utils.environ
+SetEnvVar = gtest_test_utils.SetEnvVar
+PREMATURE_EXIT_FILE_ENV_VAR = gtest_test_utils.PREMATURE_EXIT_FILE_ENV_VAR
+
+# pylint: enable-msg=C6409
+
+
+def Main():
+  """Runs the unit test."""
+
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/CMakeLists.txt b/build/_deps/googletest-src/googletest/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..db292946a59453e09929229c1fbdb3701f2bd6ab
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/CMakeLists.txt
@@ -0,0 +1,328 @@
+########################################################################
+# Note: CMake support is community-based. The maintainers do not use CMake
+# internally.
+#
+# CMake build script for Google Test.
+#
+# To run the tests for Google Test itself on Linux, use 'make test' or
+# ctest.  You can select which tests to run using 'ctest -R regex'.
+# For more options, run 'ctest --help'.
+
+# When other libraries are using a shared version of runtime libraries,
+# Google Test also has to use one.
+option(
+  gtest_force_shared_crt
+  "Use shared (DLL) run-time lib even when Google Test is built as static lib."
+  OFF)
+
+option(gtest_build_tests "Build all of gtest's own tests." OFF)
+
+option(gtest_build_samples "Build gtest's sample programs." OFF)
+
+option(gtest_disable_pthreads "Disable uses of pthreads in gtest." OFF)
+
+option(
+  gtest_hide_internal_symbols
+  "Build gtest with internal symbols hidden in shared libraries."
+  OFF)
+
+# Defines pre_project_set_up_hermetic_build() and set_up_hermetic_build().
+include(cmake/hermetic_build.cmake OPTIONAL)
+
+if (COMMAND pre_project_set_up_hermetic_build)
+  pre_project_set_up_hermetic_build()
+endif()
+
+########################################################################
+#
+# Project-wide settings
+
+# Name of the project.
+#
+# CMake files in this project can refer to the root source directory
+# as ${gtest_SOURCE_DIR} and to the root binary directory as
+# ${gtest_BINARY_DIR}.
+# Language "C" is required for find_package(Threads).
+
+# Project version:
+
+if (CMAKE_VERSION VERSION_LESS 3.0)
+  project(gtest CXX C)
+  set(PROJECT_VERSION ${GOOGLETEST_VERSION})
+else()
+  cmake_policy(SET CMP0048 NEW)
+  project(gtest VERSION ${GOOGLETEST_VERSION} LANGUAGES CXX C)
+endif()
+cmake_minimum_required(VERSION 2.6.4)
+
+if (POLICY CMP0063) # Visibility
+  cmake_policy(SET CMP0063 NEW)
+endif (POLICY CMP0063)
+
+if (COMMAND set_up_hermetic_build)
+  set_up_hermetic_build()
+endif()
+
+# These commands only run if this is the main project
+if(CMAKE_PROJECT_NAME STREQUAL "gtest" OR CMAKE_PROJECT_NAME STREQUAL "googletest-distribution")
+
+  # BUILD_SHARED_LIBS is a standard CMake variable, but we declare it here to
+  # make it prominent in the GUI.
+  option(BUILD_SHARED_LIBS "Build shared libraries (DLLs)." OFF)
+
+else()
+
+  mark_as_advanced(
+    gtest_force_shared_crt
+    gtest_build_tests
+    gtest_build_samples
+    gtest_disable_pthreads
+    gtest_hide_internal_symbols)
+
+endif()
+
+
+if (gtest_hide_internal_symbols)
+  set(CMAKE_CXX_VISIBILITY_PRESET hidden)
+  set(CMAKE_VISIBILITY_INLINES_HIDDEN 1)
+endif()
+
+# Define helper functions and macros used by Google Test.
+include(cmake/internal_utils.cmake)
+
+config_compiler_and_linker()  # Defined in internal_utils.cmake.
+
+# Create the CMake package file descriptors.
+if (INSTALL_GTEST)
+  include(CMakePackageConfigHelpers)
+  set(cmake_package_name GTest)
+  set(targets_export_name ${cmake_package_name}Targets CACHE INTERNAL "")
+  set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated" CACHE INTERNAL "")
+  set(cmake_files_install_dir "${CMAKE_INSTALL_LIBDIR}/cmake/${cmake_package_name}")
+  set(version_file "${generated_dir}/${cmake_package_name}ConfigVersion.cmake")
+  write_basic_package_version_file(${version_file} VERSION ${GOOGLETEST_VERSION} COMPATIBILITY AnyNewerVersion)
+  install(EXPORT ${targets_export_name}
+    NAMESPACE ${cmake_package_name}::
+    DESTINATION ${cmake_files_install_dir})
+  set(config_file "${generated_dir}/${cmake_package_name}Config.cmake")
+  configure_package_config_file("${gtest_SOURCE_DIR}/cmake/Config.cmake.in"
+    "${config_file}" INSTALL_DESTINATION ${cmake_files_install_dir})
+  install(FILES ${version_file} ${config_file}
+    DESTINATION ${cmake_files_install_dir})
+endif()
+
+# Where Google Test's .h files can be found.
+set(gtest_build_include_dirs
+  "${gtest_SOURCE_DIR}/include"
+  "${gtest_SOURCE_DIR}")
+include_directories(${gtest_build_include_dirs})
+
+########################################################################
+#
+# Defines the gtest & gtest_main libraries.  User tests should link
+# with one of them.
+
+# Google Test libraries.  We build them using more strict warnings than what
+# are used for other targets, to ensure that gtest can be compiled by a user
+# aggressive about warnings.
+cxx_library(gtest "${cxx_strict}" src/gtest-all.cc)
+cxx_library(gtest_main "${cxx_strict}" src/gtest_main.cc)
+# If the CMake version supports it, attach header directory information
+# to the targets for when we are part of a parent build (ie being pulled
+# in via add_subdirectory() rather than being a standalone build).
+if (DEFINED CMAKE_VERSION AND NOT "${CMAKE_VERSION}" VERSION_LESS "2.8.11")
+  target_include_directories(gtest SYSTEM INTERFACE
+    "$<BUILD_INTERFACE:${gtest_build_include_dirs}>"
+    "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
+  target_include_directories(gtest_main SYSTEM INTERFACE
+    "$<BUILD_INTERFACE:${gtest_build_include_dirs}>"
+    "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>")
+endif()
+target_link_libraries(gtest_main PUBLIC gtest)
+
+########################################################################
+#
+# Install rules
+install_project(gtest gtest_main)
+
+########################################################################
+#
+# Samples on how to link user tests with gtest or gtest_main.
+#
+# They are not built by default.  To build them, set the
+# gtest_build_samples option to ON.  You can do it by running ccmake
+# or specifying the -Dgtest_build_samples=ON flag when running cmake.
+
+if (gtest_build_samples)
+  cxx_executable(sample1_unittest samples gtest_main samples/sample1.cc)
+  cxx_executable(sample2_unittest samples gtest_main samples/sample2.cc)
+  cxx_executable(sample3_unittest samples gtest_main)
+  cxx_executable(sample4_unittest samples gtest_main samples/sample4.cc)
+  cxx_executable(sample5_unittest samples gtest_main samples/sample1.cc)
+  cxx_executable(sample6_unittest samples gtest_main)
+  cxx_executable(sample7_unittest samples gtest_main)
+  cxx_executable(sample8_unittest samples gtest_main)
+  cxx_executable(sample9_unittest samples gtest)
+  cxx_executable(sample10_unittest samples gtest)
+endif()
+
+########################################################################
+#
+# Google Test's own tests.
+#
+# You can skip this section if you aren't interested in testing
+# Google Test itself.
+#
+# The tests are not built by default.  To build them, set the
+# gtest_build_tests option to ON.  You can do it by running ccmake
+# or specifying the -Dgtest_build_tests=ON flag when running cmake.
+
+if (gtest_build_tests)
+  # This must be set in the root directory for the tests to be run by
+  # 'make test' or ctest.
+  enable_testing()
+
+  if (WIN32)
+    file(GENERATE OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>/RunTest.ps1"
+         CONTENT
+"$project_bin = \"${CMAKE_BINARY_DIR}/bin/$<CONFIG>\"
+$env:Path = \"$project_bin;$env:Path\"
+& $args")
+  elseif (MINGW OR CYGWIN)
+    file(GENERATE OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/RunTest.ps1"
+         CONTENT
+"$project_bin = (cygpath --windows ${CMAKE_BINARY_DIR}/bin)
+$env:Path = \"$project_bin;$env:Path\"
+& $args")
+  endif()
+
+  ############################################################
+  # C++ tests built with standard compiler flags.
+
+  cxx_test(googletest-death-test-test gtest_main)
+  cxx_test(gtest_environment_test gtest)
+  cxx_test(googletest-filepath-test gtest_main)
+  cxx_test(googletest-listener-test gtest_main)
+  cxx_test(gtest_main_unittest gtest_main)
+  cxx_test(googletest-message-test gtest_main)
+  cxx_test(gtest_no_test_unittest gtest)
+  cxx_test(googletest-options-test gtest_main)
+  cxx_test(googletest-param-test-test gtest
+    test/googletest-param-test2-test.cc)
+  cxx_test(googletest-port-test gtest_main)
+  cxx_test(gtest_pred_impl_unittest gtest_main)
+  cxx_test(gtest_premature_exit_test gtest
+    test/gtest_premature_exit_test.cc)
+  cxx_test(googletest-printers-test gtest_main)
+  cxx_test(gtest_prod_test gtest_main
+    test/production.cc)
+  cxx_test(gtest_repeat_test gtest)
+  cxx_test(gtest_sole_header_test gtest_main)
+  cxx_test(gtest_stress_test gtest)
+  cxx_test(googletest-test-part-test gtest_main)
+  cxx_test(gtest_throw_on_failure_ex_test gtest)
+  cxx_test(gtest-typed-test_test gtest_main
+    test/gtest-typed-test2_test.cc)
+  cxx_test(gtest_unittest gtest_main)
+  cxx_test(gtest-unittest-api_test gtest)
+  cxx_test(gtest_skip_in_environment_setup_test gtest_main)
+  cxx_test(gtest_skip_test gtest_main)
+
+  ############################################################
+  # C++ tests built with non-standard compiler flags.
+
+  # MSVC 7.1 does not support STL with exceptions disabled.
+  if (NOT MSVC OR MSVC_VERSION GREATER 1310)
+    cxx_library(gtest_no_exception "${cxx_no_exception}"
+      src/gtest-all.cc)
+    cxx_library(gtest_main_no_exception "${cxx_no_exception}"
+      src/gtest-all.cc src/gtest_main.cc)
+  endif()
+  cxx_library(gtest_main_no_rtti "${cxx_no_rtti}"
+    src/gtest-all.cc src/gtest_main.cc)
+
+  cxx_test_with_flags(gtest-death-test_ex_nocatch_test
+    "${cxx_exception} -DGTEST_ENABLE_CATCH_EXCEPTIONS_=0"
+    gtest test/googletest-death-test_ex_test.cc)
+  cxx_test_with_flags(gtest-death-test_ex_catch_test
+    "${cxx_exception} -DGTEST_ENABLE_CATCH_EXCEPTIONS_=1"
+    gtest test/googletest-death-test_ex_test.cc)
+
+  cxx_test_with_flags(gtest_no_rtti_unittest "${cxx_no_rtti}"
+    gtest_main_no_rtti test/gtest_unittest.cc)
+
+  cxx_shared_library(gtest_dll "${cxx_default}"
+    src/gtest-all.cc src/gtest_main.cc)
+
+  cxx_executable_with_flags(gtest_dll_test_ "${cxx_default}"
+    gtest_dll test/gtest_all_test.cc)
+  set_target_properties(gtest_dll_test_
+                        PROPERTIES
+                        COMPILE_DEFINITIONS "GTEST_LINKED_AS_SHARED_LIBRARY=1")
+
+  ############################################################
+  # Python tests.
+
+  cxx_executable(googletest-break-on-failure-unittest_ test gtest)
+  py_test(googletest-break-on-failure-unittest)
+
+  py_test(gtest_skip_environment_check_output_test)
+
+  # Visual Studio .NET 2003 does not support STL with exceptions disabled.
+  if (NOT MSVC OR MSVC_VERSION GREATER 1310)  # 1310 is Visual Studio .NET 2003
+    cxx_executable_with_flags(
+      googletest-catch-exceptions-no-ex-test_
+      "${cxx_no_exception}"
+      gtest_main_no_exception
+      test/googletest-catch-exceptions-test_.cc)
+  endif()
+
+  cxx_executable_with_flags(
+    googletest-catch-exceptions-ex-test_
+    "${cxx_exception}"
+    gtest_main
+    test/googletest-catch-exceptions-test_.cc)
+  py_test(googletest-catch-exceptions-test)
+
+  cxx_executable(googletest-color-test_ test gtest)
+  py_test(googletest-color-test)
+
+  cxx_executable(googletest-env-var-test_ test gtest)
+  py_test(googletest-env-var-test)
+
+  cxx_executable(googletest-filter-unittest_ test gtest)
+  py_test(googletest-filter-unittest)
+
+  cxx_executable(gtest_help_test_ test gtest_main)
+  py_test(gtest_help_test)
+
+  cxx_executable(googletest-list-tests-unittest_ test gtest)
+  py_test(googletest-list-tests-unittest)
+
+  cxx_executable(googletest-output-test_ test gtest)
+  py_test(googletest-output-test --no_stacktrace_support)
+
+  cxx_executable(googletest-shuffle-test_ test gtest)
+  py_test(googletest-shuffle-test)
+
+  # MSVC 7.1 does not support STL with exceptions disabled.
+  if (NOT MSVC OR MSVC_VERSION GREATER 1310)
+    cxx_executable(googletest-throw-on-failure-test_ test gtest_no_exception)
+    set_target_properties(googletest-throw-on-failure-test_
+      PROPERTIES
+      COMPILE_FLAGS "${cxx_no_exception}")
+    py_test(googletest-throw-on-failure-test)
+  endif()
+
+  cxx_executable(googletest-uninitialized-test_ test gtest)
+  py_test(googletest-uninitialized-test)
+
+  cxx_executable(gtest_xml_outfile1_test_ test gtest_main)
+  cxx_executable(gtest_xml_outfile2_test_ test gtest_main)
+  py_test(gtest_xml_outfiles_test)
+  py_test(googletest-json-outfiles-test)
+
+  cxx_executable(gtest_xml_output_unittest_ test gtest)
+  py_test(gtest_xml_output_unittest --no_stacktrace_support)
+  py_test(googletest-json-output-unittest --no_stacktrace_support)
+endif()
diff --git a/build/_deps/googletest-src/googletest/CONTRIBUTORS b/build/_deps/googletest-src/googletest/CONTRIBUTORS
new file mode 100644
index 0000000000000000000000000000000000000000..feae2fc04410dc308e464aa256fe1f2d31edc988
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/CONTRIBUTORS
@@ -0,0 +1,37 @@
+# This file contains a list of people who've made non-trivial
+# contribution to the Google C++ Testing Framework project.  People
+# who commit code to the project are encouraged to add their names
+# here.  Please keep the list sorted by first names.
+
+Ajay Joshi <jaj@google.com>
+Balázs Dán <balazs.dan@gmail.com>
+Bharat Mediratta <bharat@menalto.com>
+Chandler Carruth <chandlerc@google.com>
+Chris Prince <cprince@google.com>
+Chris Taylor <taylorc@google.com>
+Dan Egnor <egnor@google.com>
+Eric Roman <eroman@chromium.org>
+Hady Zalek <hady.zalek@gmail.com>
+Jeffrey Yasskin <jyasskin@google.com>
+Jói Sigurðsson <joi@google.com>
+Keir Mierle <mierle@gmail.com>
+Keith Ray <keith.ray@gmail.com>
+Kenton Varda <kenton@google.com>
+Manuel Klimek <klimek@google.com>
+Markus Heule <markus.heule@gmail.com>
+Mika Raento <mikie@iki.fi>
+Miklós Fazekas <mfazekas@szemafor.com>
+Pasi Valminen <pasi.valminen@gmail.com>
+Patrick Hanna <phanna@google.com>
+Patrick Riley <pfr@google.com>
+Peter Kaminski <piotrk@google.com>
+Preston Jackson <preston.a.jackson@gmail.com>
+Rainer Klaffenboeck <rainer.klaffenboeck@dynatrace.com>
+Russ Cox <rsc@google.com>
+Russ Rufer <russ@pentad.com>
+Sean Mcafee <eefacm@gmail.com>
+Sigurður Ásgeirsson <siggi@google.com>
+Tracy Bialik <tracy@pentad.com>
+Vadim Berman <vadimb@google.com>
+Vlad Losev <vladl@google.com>
+Zhanyong Wan <wan@google.com>
diff --git a/build/_deps/googletest-src/googletest/LICENSE b/build/_deps/googletest-src/googletest/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..1941a11f8ce94389160b458927a29ba217542818
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/LICENSE
@@ -0,0 +1,28 @@
+Copyright 2008, Google Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+    * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/build/_deps/googletest-src/googletest/README.md b/build/_deps/googletest-src/googletest/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..766ddc1e074dca76dcb6db03785fe9bf2924641e
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/README.md
@@ -0,0 +1,244 @@
+### Generic Build Instructions
+
+#### Setup
+
+To build Google Test and your tests that use it, you need to tell your build
+system where to find its headers and source files. The exact way to do it
+depends on which build system you use, and is usually straightforward.
+
+### Build with CMake
+
+Google Test comes with a CMake build script (
+[CMakeLists.txt](https://github.com/google/googletest/blob/master/CMakeLists.txt))
+that can be used on a wide range of platforms ("C" stands for cross-platform.).
+If you don't have CMake installed already, you can download it for free from
+<http://www.cmake.org/>.
+
+CMake works by generating native makefiles or build projects that can be used in
+the compiler environment of your choice. You can either build Google Test as a
+standalone project or it can be incorporated into an existing CMake build for
+another project.
+
+#### Standalone CMake Project
+
+When building Google Test as a standalone project, the typical workflow starts
+with:
+
+    mkdir mybuild       # Create a directory to hold the build output.
+    cd mybuild
+    cmake ${GTEST_DIR}  # Generate native build scripts.
+
+If you want to build Google Test's samples, you should replace the last command
+with
+
+    cmake -Dgtest_build_samples=ON ${GTEST_DIR}
+
+If you are on a \*nix system, you should now see a Makefile in the current
+directory. Just type 'make' to build gtest.
+
+If you use Windows and have Visual Studio installed, a `gtest.sln` file and
+several `.vcproj` files will be created. You can then build them using Visual
+Studio.
+
+On Mac OS X with Xcode installed, a `.xcodeproj` file will be generated.
+
+#### Incorporating Into An Existing CMake Project
+
+If you want to use gtest in a project which already uses CMake, then a more
+robust and flexible approach is to build gtest as part of that project directly.
+This is done by making the GoogleTest source code available to the main build
+and adding it using CMake's `add_subdirectory()` command. This has the
+significant advantage that the same compiler and linker settings are used
+between gtest and the rest of your project, so issues associated with using
+incompatible libraries (eg debug/release), etc. are avoided. This is
+particularly useful on Windows. Making GoogleTest's source code available to the
+main build can be done a few different ways:
+
+*   Download the GoogleTest source code manually and place it at a known
+    location. This is the least flexible approach and can make it more difficult
+    to use with continuous integration systems, etc.
+*   Embed the GoogleTest source code as a direct copy in the main project's
+    source tree. This is often the simplest approach, but is also the hardest to
+    keep up to date. Some organizations may not permit this method.
+*   Add GoogleTest as a git submodule or equivalent. This may not always be
+    possible or appropriate. Git submodules, for example, have their own set of
+    advantages and drawbacks.
+*   Use CMake to download GoogleTest as part of the build's configure step. This
+    is just a little more complex, but doesn't have the limitations of the other
+    methods.
+
+The last of the above methods is implemented with a small piece of CMake code in
+a separate file (e.g. `CMakeLists.txt.in`) which is copied to the build area and
+then invoked as a sub-build _during the CMake stage_. That directory is then
+pulled into the main build with `add_subdirectory()`. For example:
+
+New file `CMakeLists.txt.in`:
+
+```cmake
+cmake_minimum_required(VERSION 2.8.2)
+
+project(googletest-download NONE)
+
+include(ExternalProject)
+ExternalProject_Add(googletest
+  GIT_REPOSITORY    https://github.com/google/googletest.git
+  GIT_TAG           master
+  SOURCE_DIR        "${CMAKE_CURRENT_BINARY_DIR}/googletest-src"
+  BINARY_DIR        "${CMAKE_CURRENT_BINARY_DIR}/googletest-build"
+  CONFIGURE_COMMAND ""
+  BUILD_COMMAND     ""
+  INSTALL_COMMAND   ""
+  TEST_COMMAND      ""
+)
+```
+
+Existing build's `CMakeLists.txt`:
+
+```cmake
+# Download and unpack googletest at configure time
+configure_file(CMakeLists.txt.in googletest-download/CMakeLists.txt)
+execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
+  RESULT_VARIABLE result
+  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download )
+if(result)
+  message(FATAL_ERROR "CMake step for googletest failed: ${result}")
+endif()
+execute_process(COMMAND ${CMAKE_COMMAND} --build .
+  RESULT_VARIABLE result
+  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download )
+if(result)
+  message(FATAL_ERROR "Build step for googletest failed: ${result}")
+endif()
+
+# Prevent overriding the parent project's compiler/linker
+# settings on Windows
+set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+
+# Add googletest directly to our build. This defines
+# the gtest and gtest_main targets.
+add_subdirectory(${CMAKE_CURRENT_BINARY_DIR}/googletest-src
+                 ${CMAKE_CURRENT_BINARY_DIR}/googletest-build
+                 EXCLUDE_FROM_ALL)
+
+# The gtest/gtest_main targets carry header search path
+# dependencies automatically when using CMake 2.8.11 or
+# later. Otherwise we have to add them here ourselves.
+if (CMAKE_VERSION VERSION_LESS 2.8.11)
+  include_directories("${gtest_SOURCE_DIR}/include")
+endif()
+
+# Now simply link against gtest or gtest_main as needed. Eg
+add_executable(example example.cpp)
+target_link_libraries(example gtest_main)
+add_test(NAME example_test COMMAND example)
+```
+
+Note that this approach requires CMake 2.8.2 or later due to its use of the
+`ExternalProject_Add()` command. The above technique is discussed in more detail
+in [this separate article](http://crascit.com/2015/07/25/cmake-gtest/) which
+also contains a link to a fully generalized implementation of the technique.
+
+##### Visual Studio Dynamic vs Static Runtimes
+
+By default, new Visual Studio projects link the C runtimes dynamically but
+Google Test links them statically. This will generate an error that looks
+something like the following: gtest.lib(gtest-all.obj) : error LNK2038: mismatch
+detected for 'RuntimeLibrary': value 'MTd_StaticDebug' doesn't match value
+'MDd_DynamicDebug' in main.obj
+
+Google Test already has a CMake option for this: `gtest_force_shared_crt`
+
+Enabling this option will make gtest link the runtimes dynamically too, and
+match the project in which it is included.
+
+#### C++ Standard Version
+
+An environment that supports C++11 is required in order to successfully build
+Google Test. One way to ensure this is to specify the standard in the top-level
+project, for example by using the `set(CMAKE_CXX_STANDARD 11)` command. If this
+is not feasible, for example in a C project using Google Test for validation,
+then it can be specified by adding it to the options for cmake via the
+`DCMAKE_CXX_FLAGS` option.
+
+### Tweaking Google Test
+
+Google Test can be used in diverse environments. The default configuration may
+not work (or may not work well) out of the box in some environments. However,
+you can easily tweak Google Test by defining control macros on the compiler
+command line. Generally, these macros are named like `GTEST_XYZ` and you define
+them to either 1 or 0 to enable or disable a certain feature.
+
+We list the most frequently used macros below. For a complete list, see file
+[include/gtest/internal/gtest-port.h](https://github.com/google/googletest/blob/master/googletest/include/gtest/internal/gtest-port.h).
+
+### Multi-threaded Tests
+
+Google Test is thread-safe where the pthread library is available. After
+`#include "gtest/gtest.h"`, you can check the
+`GTEST_IS_THREADSAFE` macro to see whether this is the case (yes if the macro is
+`#defined` to 1, no if it's undefined.).
+
+If Google Test doesn't correctly detect whether pthread is available in your
+environment, you can force it with
+
+    -DGTEST_HAS_PTHREAD=1
+
+or
+
+    -DGTEST_HAS_PTHREAD=0
+
+When Google Test uses pthread, you may need to add flags to your compiler and/or
+linker to select the pthread library, or you'll get link errors. If you use the
+CMake script or the deprecated Autotools script, this is taken care of for you.
+If you use your own build script, you'll need to read your compiler and linker's
+manual to figure out what flags to add.
+
+### As a Shared Library (DLL)
+
+Google Test is compact, so most users can build and link it as a static library
+for the simplicity. You can choose to use Google Test as a shared library (known
+as a DLL on Windows) if you prefer.
+
+To compile *gtest* as a shared library, add
+
+    -DGTEST_CREATE_SHARED_LIBRARY=1
+
+to the compiler flags. You'll also need to tell the linker to produce a shared
+library instead - consult your linker's manual for how to do it.
+
+To compile your *tests* that use the gtest shared library, add
+
+    -DGTEST_LINKED_AS_SHARED_LIBRARY=1
+
+to the compiler flags.
+
+Note: while the above steps aren't technically necessary today when using some
+compilers (e.g. GCC), they may become necessary in the future, if we decide to
+improve the speed of loading the library (see
+<http://gcc.gnu.org/wiki/Visibility> for details). Therefore you are recommended
+to always add the above flags when using Google Test as a shared library.
+Otherwise a future release of Google Test may break your build script.
+
+### Avoiding Macro Name Clashes
+
+In C++, macros don't obey namespaces. Therefore two libraries that both define a
+macro of the same name will clash if you `#include` both definitions. In case a
+Google Test macro clashes with another library, you can force Google Test to
+rename its macro to avoid the conflict.
+
+Specifically, if both Google Test and some other code define macro FOO, you can
+add
+
+    -DGTEST_DONT_DEFINE_FOO=1
+
+to the compiler flags to tell Google Test to change the macro's name from `FOO`
+to `GTEST_FOO`. Currently `FOO` can be `FAIL`, `SUCCEED`, or `TEST`. For
+example, with `-DGTEST_DONT_DEFINE_TEST=1`, you'll need to write
+
+    GTEST_TEST(SomeTest, DoesThis) { ... }
+
+instead of
+
+    TEST(SomeTest, DoesThis) { ... }
+
+in order to define a test.
diff --git a/build/_deps/googletest-src/googletest/cmake/Config.cmake.in b/build/_deps/googletest-src/googletest/cmake/Config.cmake.in
new file mode 100644
index 0000000000000000000000000000000000000000..12be4498b1a079681a129e31b17c57e18126a63a
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/cmake/Config.cmake.in
@@ -0,0 +1,9 @@
+@PACKAGE_INIT@
+include(CMakeFindDependencyMacro)
+if (@GTEST_HAS_PTHREAD@)
+  set(THREADS_PREFER_PTHREAD_FLAG @THREADS_PREFER_PTHREAD_FLAG@)
+  find_dependency(Threads)
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/@targets_export_name@.cmake")
+check_required_components("@project_name@")
diff --git a/build/_deps/googletest-src/googletest/cmake/gtest.pc.in b/build/_deps/googletest-src/googletest/cmake/gtest.pc.in
new file mode 100644
index 0000000000000000000000000000000000000000..9aae29e267f01ef79f1aee7f6d1d3acbb3b1ec35
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/cmake/gtest.pc.in
@@ -0,0 +1,10 @@
+prefix=${pcfiledir}/../..
+libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
+
+Name: gtest
+Description: GoogleTest (without main() function)
+Version: @PROJECT_VERSION@
+URL: https://github.com/google/googletest
+Libs: -L${libdir} -lgtest @CMAKE_THREAD_LIBS_INIT@
+Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@ @CMAKE_THREAD_LIBS_INIT@
diff --git a/build/_deps/googletest-src/googletest/cmake/gtest_main.pc.in b/build/_deps/googletest-src/googletest/cmake/gtest_main.pc.in
new file mode 100644
index 0000000000000000000000000000000000000000..915f2973af799dc035f3d966d3d601c6c3109a50
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/cmake/gtest_main.pc.in
@@ -0,0 +1,11 @@
+prefix=${pcfiledir}/../..
+libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
+
+Name: gtest_main
+Description: GoogleTest (with main() function)
+Version: @PROJECT_VERSION@
+URL: https://github.com/google/googletest
+Requires: gtest
+Libs: -L${libdir} -lgtest_main @CMAKE_THREAD_LIBS_INIT@
+Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@ @CMAKE_THREAD_LIBS_INIT@
diff --git a/build/_deps/googletest-src/googletest/cmake/internal_utils.cmake b/build/_deps/googletest-src/googletest/cmake/internal_utils.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..2f70f0b084b99e3a231e3d01593c0dee9c7228b6
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/cmake/internal_utils.cmake
@@ -0,0 +1,358 @@
+# Defines functions and macros useful for building Google Test and
+# Google Mock.
+#
+# Note:
+#
+# - This file will be run twice when building Google Mock (once via
+#   Google Test's CMakeLists.txt, and once via Google Mock's).
+#   Therefore it shouldn't have any side effects other than defining
+#   the functions and macros.
+#
+# - The functions/macros defined in this file may depend on Google
+#   Test and Google Mock's option() definitions, and thus must be
+#   called *after* the options have been defined.
+
+if (POLICY CMP0054)
+  cmake_policy(SET CMP0054 NEW)
+endif (POLICY CMP0054)
+
+# Tweaks CMake's default compiler/linker settings to suit Google Test's needs.
+#
+# This must be a macro(), as inside a function string() can only
+# update variables in the function scope.
+macro(fix_default_compiler_settings_)
+  if (MSVC)
+    # For MSVC, CMake sets certain flags to defaults we want to override.
+    # This replacement code is taken from sample in the CMake Wiki at
+    # https://gitlab.kitware.com/cmake/community/wikis/FAQ#dynamic-replace.
+    foreach (flag_var
+             CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
+             CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
+             CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
+             CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
+      if (NOT BUILD_SHARED_LIBS AND NOT gtest_force_shared_crt)
+        # When Google Test is built as a shared library, it should also use
+        # shared runtime libraries.  Otherwise, it may end up with multiple
+        # copies of runtime library data in different modules, resulting in
+        # hard-to-find crashes. When it is built as a static library, it is
+        # preferable to use CRT as static libraries, as we don't have to rely
+        # on CRT DLLs being available. CMake always defaults to using shared
+        # CRT libraries, so we override that default here.
+        string(REPLACE "/MD" "-MT" ${flag_var} "${${flag_var}}")
+      endif()
+
+      # We prefer more strict warning checking for building Google Test.
+      # Replaces /W3 with /W4 in defaults.
+      string(REPLACE "/W3" "/W4" ${flag_var} "${${flag_var}}")
+
+      # Prevent D9025 warning for targets that have exception handling
+      # turned off (/EHs-c- flag). Where required, exceptions are explicitly
+      # re-enabled using the cxx_exception_flags variable.
+      string(REPLACE "/EHsc" "" ${flag_var} "${${flag_var}}")
+    endforeach()
+  endif()
+endmacro()
+
+# Defines the compiler/linker flags used to build Google Test and
+# Google Mock.  You can tweak these definitions to suit your need.  A
+# variable's value is empty before it's explicitly assigned to.
+macro(config_compiler_and_linker)
+  # Note: pthreads on MinGW is not supported, even if available
+  # instead, we use windows threading primitives
+  unset(GTEST_HAS_PTHREAD)
+  if (NOT gtest_disable_pthreads AND NOT MINGW)
+    # Defines CMAKE_USE_PTHREADS_INIT and CMAKE_THREAD_LIBS_INIT.
+    find_package(Threads)
+    if (CMAKE_USE_PTHREADS_INIT)
+      set(GTEST_HAS_PTHREAD ON)
+    endif()
+  endif()
+
+  fix_default_compiler_settings_()
+  if (MSVC)
+    # Newlines inside flags variables break CMake's NMake generator.
+    # TODO(vladl@google.com): Add -RTCs and -RTCu to debug builds.
+    set(cxx_base_flags "-GS -W4 -WX -wd4251 -wd4275 -nologo -J -Zi")
+    set(cxx_base_flags "${cxx_base_flags} -D_UNICODE -DUNICODE -DWIN32 -D_WIN32")
+    set(cxx_base_flags "${cxx_base_flags} -DSTRICT -DWIN32_LEAN_AND_MEAN")
+    set(cxx_exception_flags "-EHsc -D_HAS_EXCEPTIONS=1")
+    set(cxx_no_exception_flags "-EHs-c- -D_HAS_EXCEPTIONS=0")
+    set(cxx_no_rtti_flags "-GR-")
+    # Suppress "unreachable code" warning
+    # http://stackoverflow.com/questions/3232669 explains the issue.
+    set(cxx_base_flags "${cxx_base_flags} -wd4702")
+  elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+    set(cxx_base_flags "-Wall -Wshadow -Werror -Wconversion")
+    set(cxx_exception_flags "-fexceptions")
+    set(cxx_no_exception_flags "-fno-exceptions")
+    set(cxx_strict_flags "-W -Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wunused-parameter -Wcast-align -Wchar-subscripts -Winline -Wredundant-decls")
+    set(cxx_no_rtti_flags "-fno-rtti")
+  elseif (CMAKE_COMPILER_IS_GNUCXX)
+    set(cxx_base_flags "-Wall -Wshadow -Werror")
+    if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0.0)
+      set(cxx_base_flags "${cxx_base_flags} -Wno-error=dangling-else")
+    endif()
+    set(cxx_exception_flags "-fexceptions")
+    set(cxx_no_exception_flags "-fno-exceptions")
+    # Until version 4.3.2, GCC doesn't define a macro to indicate
+    # whether RTTI is enabled.  Therefore we define GTEST_HAS_RTTI
+    # explicitly.
+    set(cxx_no_rtti_flags "-fno-rtti -DGTEST_HAS_RTTI=0")
+    set(cxx_strict_flags
+      "-Wextra -Wno-unused-parameter -Wno-missing-field-initializers")
+  elseif (CMAKE_CXX_COMPILER_ID STREQUAL "SunPro")
+    set(cxx_exception_flags "-features=except")
+    # Sun Pro doesn't provide macros to indicate whether exceptions and
+    # RTTI are enabled, so we define GTEST_HAS_* explicitly.
+    set(cxx_no_exception_flags "-features=no%except -DGTEST_HAS_EXCEPTIONS=0")
+    set(cxx_no_rtti_flags "-features=no%rtti -DGTEST_HAS_RTTI=0")
+  elseif (CMAKE_CXX_COMPILER_ID STREQUAL "VisualAge" OR
+      CMAKE_CXX_COMPILER_ID STREQUAL "XL")
+    # CMake 2.8 changes Visual Age's compiler ID to "XL".
+    set(cxx_exception_flags "-qeh")
+    set(cxx_no_exception_flags "-qnoeh")
+    # Until version 9.0, Visual Age doesn't define a macro to indicate
+    # whether RTTI is enabled.  Therefore we define GTEST_HAS_RTTI
+    # explicitly.
+    set(cxx_no_rtti_flags "-qnortti -DGTEST_HAS_RTTI=0")
+  elseif (CMAKE_CXX_COMPILER_ID STREQUAL "HP")
+    set(cxx_base_flags "-AA -mt")
+    set(cxx_exception_flags "-DGTEST_HAS_EXCEPTIONS=1")
+    set(cxx_no_exception_flags "+noeh -DGTEST_HAS_EXCEPTIONS=0")
+    # RTTI can not be disabled in HP aCC compiler.
+    set(cxx_no_rtti_flags "")
+  endif()
+
+  # The pthreads library is available and allowed?
+  if (DEFINED GTEST_HAS_PTHREAD)
+    set(GTEST_HAS_PTHREAD_MACRO "-DGTEST_HAS_PTHREAD=1")
+  else()
+    set(GTEST_HAS_PTHREAD_MACRO "-DGTEST_HAS_PTHREAD=0")
+  endif()
+  set(cxx_base_flags "${cxx_base_flags} ${GTEST_HAS_PTHREAD_MACRO}")
+
+  # For building gtest's own tests and samples.
+  set(cxx_exception "${cxx_base_flags} ${cxx_exception_flags}")
+  set(cxx_no_exception
+    "${CMAKE_CXX_FLAGS} ${cxx_base_flags} ${cxx_no_exception_flags}")
+  set(cxx_default "${cxx_exception}")
+  set(cxx_no_rtti "${cxx_default} ${cxx_no_rtti_flags}")
+
+  # For building the gtest libraries.
+  set(cxx_strict "${cxx_default} ${cxx_strict_flags}")
+endmacro()
+
+# Defines the gtest & gtest_main libraries.  User tests should link
+# with one of them.
+function(cxx_library_with_type name type cxx_flags)
+  # type can be either STATIC or SHARED to denote a static or shared library.
+  # ARGN refers to additional arguments after 'cxx_flags'.
+  add_library(${name} ${type} ${ARGN})
+  set_target_properties(${name}
+    PROPERTIES
+    COMPILE_FLAGS "${cxx_flags}")
+  # Generate debug library name with a postfix.
+  set_target_properties(${name}
+    PROPERTIES
+    DEBUG_POSTFIX "d")
+  # Set the output directory for build artifacts
+  set_target_properties(${name}
+    PROPERTIES
+    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin"
+    LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
+    ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
+    PDB_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
+  # make PDBs match library name
+  get_target_property(pdb_debug_postfix ${name} DEBUG_POSTFIX)
+  set_target_properties(${name}
+    PROPERTIES
+    PDB_NAME "${name}"
+    PDB_NAME_DEBUG "${name}${pdb_debug_postfix}"
+    COMPILE_PDB_NAME "${name}"
+    COMPILE_PDB_NAME_DEBUG "${name}${pdb_debug_postfix}")
+
+  if (BUILD_SHARED_LIBS OR type STREQUAL "SHARED")
+    set_target_properties(${name}
+      PROPERTIES
+      COMPILE_DEFINITIONS "GTEST_CREATE_SHARED_LIBRARY=1")
+    if (NOT "${CMAKE_VERSION}" VERSION_LESS "2.8.11")
+      target_compile_definitions(${name} INTERFACE
+        $<INSTALL_INTERFACE:GTEST_LINKED_AS_SHARED_LIBRARY=1>)
+    endif()
+  endif()
+  if (DEFINED GTEST_HAS_PTHREAD)
+    if ("${CMAKE_VERSION}" VERSION_LESS "3.1.0")
+      set(threads_spec ${CMAKE_THREAD_LIBS_INIT})
+    else()
+      set(threads_spec Threads::Threads)
+    endif()
+    target_link_libraries(${name} PUBLIC ${threads_spec})
+  endif()
+endfunction()
+
+########################################################################
+#
+# Helper functions for creating build targets.
+
+function(cxx_shared_library name cxx_flags)
+  cxx_library_with_type(${name} SHARED "${cxx_flags}" ${ARGN})
+endfunction()
+
+function(cxx_library name cxx_flags)
+  cxx_library_with_type(${name} "" "${cxx_flags}" ${ARGN})
+endfunction()
+
+# cxx_executable_with_flags(name cxx_flags libs srcs...)
+#
+# creates a named C++ executable that depends on the given libraries and
+# is built from the given source files with the given compiler flags.
+function(cxx_executable_with_flags name cxx_flags libs)
+  add_executable(${name} ${ARGN})
+  if (MSVC)
+    # BigObj required for tests.
+    set(cxx_flags "${cxx_flags} -bigobj")
+  endif()
+  if (cxx_flags)
+    set_target_properties(${name}
+      PROPERTIES
+      COMPILE_FLAGS "${cxx_flags}")
+  endif()
+  if (BUILD_SHARED_LIBS)
+    set_target_properties(${name}
+      PROPERTIES
+      COMPILE_DEFINITIONS "GTEST_LINKED_AS_SHARED_LIBRARY=1")
+  endif()
+  # To support mixing linking in static and dynamic libraries, link each
+  # library in with an extra call to target_link_libraries.
+  foreach (lib "${libs}")
+    target_link_libraries(${name} ${lib})
+  endforeach()
+endfunction()
+
+# cxx_executable(name dir lib srcs...)
+#
+# creates a named target that depends on the given libs and is built
+# from the given source files.  dir/name.cc is implicitly included in
+# the source file list.
+function(cxx_executable name dir libs)
+  cxx_executable_with_flags(
+    ${name} "${cxx_default}" "${libs}" "${dir}/${name}.cc" ${ARGN})
+endfunction()
+
+# Sets PYTHONINTERP_FOUND and PYTHON_EXECUTABLE.
+find_package(PythonInterp)
+
+# cxx_test_with_flags(name cxx_flags libs srcs...)
+#
+# creates a named C++ test that depends on the given libs and is built
+# from the given source files with the given compiler flags.
+function(cxx_test_with_flags name cxx_flags libs)
+  cxx_executable_with_flags(${name} "${cxx_flags}" "${libs}" ${ARGN})
+  if (WIN32 OR MINGW)
+    add_test(NAME ${name}
+      COMMAND "powershell" "-Command" "${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>/RunTest.ps1" "$<TARGET_FILE:${name}>")
+  else()
+    add_test(NAME ${name}
+      COMMAND "$<TARGET_FILE:${name}>")
+  endif()
+endfunction()
+
+# cxx_test(name libs srcs...)
+#
+# creates a named test target that depends on the given libs and is
+# built from the given source files.  Unlike cxx_test_with_flags,
+# test/name.cc is already implicitly included in the source file list.
+function(cxx_test name libs)
+  cxx_test_with_flags("${name}" "${cxx_default}" "${libs}"
+    "test/${name}.cc" ${ARGN})
+endfunction()
+
+# py_test(name)
+#
+# creates a Python test with the given name whose main module is in
+# test/name.py.  It does nothing if Python is not installed.
+function(py_test name)
+  if (PYTHONINTERP_FOUND)
+    if ("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" VERSION_GREATER 3.1)
+      if (CMAKE_CONFIGURATION_TYPES)
+        # Multi-configuration build generators as for Visual Studio save
+        # output in a subdirectory of CMAKE_CURRENT_BINARY_DIR (Debug,
+        # Release etc.), so we have to provide it here.
+        if (WIN32 OR MINGW)
+          add_test(NAME ${name}
+            COMMAND powershell -Command ${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>/RunTest.ps1
+              ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
+              --build_dir=${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG> ${ARGN})
+        else()
+          add_test(NAME ${name}
+            COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
+              --build_dir=${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG> ${ARGN})
+        endif()
+      else (CMAKE_CONFIGURATION_TYPES)
+        # Single-configuration build generators like Makefile generators
+        # don't have subdirs below CMAKE_CURRENT_BINARY_DIR.
+        if (WIN32 OR MINGW)
+          add_test(NAME ${name}
+            COMMAND powershell -Command ${CMAKE_CURRENT_BINARY_DIR}/RunTest.ps1
+              ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
+              --build_dir=${CMAKE_CURRENT_BINARY_DIR} ${ARGN})
+        else()
+          add_test(NAME ${name}
+            COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
+              --build_dir=${CMAKE_CURRENT_BINARY_DIR} ${ARGN})
+        endif()
+      endif (CMAKE_CONFIGURATION_TYPES)
+    else()
+      # ${CMAKE_CURRENT_BINARY_DIR} is known at configuration time, so we can
+      # directly bind it from cmake. ${CTEST_CONFIGURATION_TYPE} is known
+      # only at ctest runtime (by calling ctest -c <Configuration>), so
+      # we have to escape $ to delay variable substitution here.
+      if (WIN32 OR MINGW)
+        add_test(NAME ${name}
+          COMMAND powershell -Command ${CMAKE_CURRENT_BINARY_DIR}/RunTest.ps1
+            ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
+            --build_dir=${CMAKE_CURRENT_BINARY_DIR}/\${CTEST_CONFIGURATION_TYPE} ${ARGN})
+      else()
+        add_test(NAME ${name}
+          COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test/${name}.py
+            --build_dir=${CMAKE_CURRENT_BINARY_DIR}/\${CTEST_CONFIGURATION_TYPE} ${ARGN})
+      endif()
+    endif()
+  endif(PYTHONINTERP_FOUND)
+endfunction()
+
+# install_project(targets...)
+#
+# Installs the specified targets and configures the associated pkgconfig files.
+function(install_project)
+  if(INSTALL_GTEST)
+    install(DIRECTORY "${PROJECT_SOURCE_DIR}/include/"
+      DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
+    # Install the project targets.
+    install(TARGETS ${ARGN}
+      EXPORT ${targets_export_name}
+      RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+      ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+      LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}")
+    if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
+      # Install PDBs
+      foreach(t ${ARGN})
+        get_target_property(t_pdb_name ${t} COMPILE_PDB_NAME)
+        get_target_property(t_pdb_name_debug ${t} COMPILE_PDB_NAME_DEBUG)
+        get_target_property(t_pdb_output_directory ${t} PDB_OUTPUT_DIRECTORY)
+        install(FILES
+          "${t_pdb_output_directory}/\${CMAKE_INSTALL_CONFIG_NAME}/$<$<CONFIG:Debug>:${t_pdb_name_debug}>$<$<NOT:$<CONFIG:Debug>>:${t_pdb_name}>.pdb"
+          DESTINATION ${CMAKE_INSTALL_LIBDIR}
+          OPTIONAL)
+      endforeach()
+    endif()
+    # Configure and install pkgconfig files.
+    foreach(t ${ARGN})
+      set(configured_pc "${generated_dir}/${t}.pc")
+      configure_file("${PROJECT_SOURCE_DIR}/cmake/${t}.pc.in"
+        "${configured_pc}" @ONLY)
+      install(FILES "${configured_pc}"
+        DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+    endforeach()
+  endif()
+endfunction()
diff --git a/build/_deps/googletest-src/googletest/cmake/libgtest.la.in b/build/_deps/googletest-src/googletest/cmake/libgtest.la.in
new file mode 100644
index 0000000000000000000000000000000000000000..840c83885f989a02a0ab3073a74e65bc04ddf3e1
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/cmake/libgtest.la.in
@@ -0,0 +1,21 @@
+# libgtest.la - a libtool library file
+# Generated by libtool (GNU libtool) 2.4.6
+
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# Names of this library.
+library_names='libgtest.so'
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='@CMAKE_INSTALL_FULL_LIBDIR@'
diff --git a/build/_deps/googletest-src/googletest/docs/advanced.md b/build/_deps/googletest-src/googletest/docs/advanced.md
new file mode 100644
index 0000000000000000000000000000000000000000..3e5f779d0ac8381afcb6837d952eba955f0f8d0c
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/docs/advanced.md
@@ -0,0 +1,2567 @@
+# Advanced googletest Topics
+
+<!-- GOOGLETEST_CM0016 DO NOT DELETE -->
+
+## Introduction
+
+Now that you have read the [googletest Primer](primer.md) and learned how to
+write tests using googletest, it's time to learn some new tricks. This document
+will show you more assertions as well as how to construct complex failure
+messages, propagate fatal failures, reuse and speed up your test fixtures, and
+use various flags with your tests.
+
+## More Assertions
+
+This section covers some less frequently used, but still significant,
+assertions.
+
+### Explicit Success and Failure
+
+These three assertions do not actually test a value or expression. Instead, they
+generate a success or failure directly. Like the macros that actually perform a
+test, you may stream a custom failure message into them.
+
+```c++
+SUCCEED();
+```
+
+Generates a success. This does **NOT** make the overall test succeed. A test is
+considered successful only if none of its assertions fail during its execution.
+
+NOTE: `SUCCEED()` is purely documentary and currently doesn't generate any
+user-visible output. However, we may add `SUCCEED()` messages to googletest's
+output in the future.
+
+```c++
+FAIL();
+ADD_FAILURE();
+ADD_FAILURE_AT("file_path", line_number);
+```
+
+`FAIL()` generates a fatal failure, while `ADD_FAILURE()` and `ADD_FAILURE_AT()`
+generate a nonfatal failure. These are useful when control flow, rather than a
+Boolean expression, determines the test's success or failure. For example, you
+might want to write something like:
+
+```c++
+switch(expression) {
+  case 1:
+     ... some checks ...
+  case 2:
+     ... some other checks ...
+  default:
+     FAIL() << "We shouldn't get here.";
+}
+```
+
+NOTE: you can only use `FAIL()` in functions that return `void`. See the
+[Assertion Placement section](#assertion-placement) for more information.
+
+### Exception Assertions
+
+These are for verifying that a piece of code throws (or does not throw) an
+exception of the given type:
+
+Fatal assertion                            | Nonfatal assertion                         | Verifies
+------------------------------------------ | ------------------------------------------ | --------
+`ASSERT_THROW(statement, exception_type);` | `EXPECT_THROW(statement, exception_type);` | `statement` throws an exception of the given type
+`ASSERT_ANY_THROW(statement);`             | `EXPECT_ANY_THROW(statement);`             | `statement` throws an exception of any type
+`ASSERT_NO_THROW(statement);`              | `EXPECT_NO_THROW(statement);`              | `statement` doesn't throw any exception
+
+Examples:
+
+```c++
+ASSERT_THROW(Foo(5), bar_exception);
+
+EXPECT_NO_THROW({
+  int n = 5;
+  Bar(&n);
+});
+```
+
+**Availability**: requires exceptions to be enabled in the build environment
+
+### Predicate Assertions for Better Error Messages
+
+Even though googletest has a rich set of assertions, they can never be complete,
+as it's impossible (nor a good idea) to anticipate all scenarios a user might
+run into. Therefore, sometimes a user has to use `EXPECT_TRUE()` to check a
+complex expression, for lack of a better macro. This has the problem of not
+showing you the values of the parts of the expression, making it hard to
+understand what went wrong. As a workaround, some users choose to construct the
+failure message by themselves, streaming it into `EXPECT_TRUE()`. However, this
+is awkward especially when the expression has side-effects or is expensive to
+evaluate.
+
+googletest gives you three different options to solve this problem:
+
+#### Using an Existing Boolean Function
+
+If you already have a function or functor that returns `bool` (or a type that
+can be implicitly converted to `bool`), you can use it in a *predicate
+assertion* to get the function arguments printed for free:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+| Fatal assertion                   | Nonfatal assertion                | Verifies                    |
+| --------------------------------- | --------------------------------- | --------------------------- |
+| `ASSERT_PRED1(pred1, val1)`       | `EXPECT_PRED1(pred1, val1)`       | `pred1(val1)` is true       |
+| `ASSERT_PRED2(pred2, val1, val2)` | `EXPECT_PRED2(pred2, val1, val2)` | `pred1(val1, val2)` is true |
+| `...`                             | `...`                             | `...`                       |
+
+<!-- mdformat on-->
+In the above, `predn` is an `n`-ary predicate function or functor, where `val1`,
+`val2`, ..., and `valn` are its arguments. The assertion succeeds if the
+predicate returns `true` when applied to the given arguments, and fails
+otherwise. When the assertion fails, it prints the value of each argument. In
+either case, the arguments are evaluated exactly once.
+
+Here's an example. Given
+
+```c++
+// Returns true if m and n have no common divisors except 1.
+bool MutuallyPrime(int m, int n) { ... }
+
+const int a = 3;
+const int b = 4;
+const int c = 10;
+```
+
+the assertion
+
+```c++
+  EXPECT_PRED2(MutuallyPrime, a, b);
+```
+
+will succeed, while the assertion
+
+```c++
+  EXPECT_PRED2(MutuallyPrime, b, c);
+```
+
+will fail with the message
+
+```none
+MutuallyPrime(b, c) is false, where
+b is 4
+c is 10
+```
+
+> NOTE:
+>
+> 1.  If you see a compiler error "no matching function to call" when using
+>     `ASSERT_PRED*` or `EXPECT_PRED*`, please see
+>     [this](faq.md#the-compiler-complains-no-matching-function-to-call-when-i-use-assert-pred-how-do-i-fix-it)
+>     for how to resolve it.
+
+#### Using a Function That Returns an AssertionResult
+
+While `EXPECT_PRED*()` and friends are handy for a quick job, the syntax is not
+satisfactory: you have to use different macros for different arities, and it
+feels more like Lisp than C++. The `::testing::AssertionResult` class solves
+this problem.
+
+An `AssertionResult` object represents the result of an assertion (whether it's
+a success or a failure, and an associated message). You can create an
+`AssertionResult` using one of these factory functions:
+
+```c++
+namespace testing {
+
+// Returns an AssertionResult object to indicate that an assertion has
+// succeeded.
+AssertionResult AssertionSuccess();
+
+// Returns an AssertionResult object to indicate that an assertion has
+// failed.
+AssertionResult AssertionFailure();
+
+}
+```
+
+You can then use the `<<` operator to stream messages to the `AssertionResult`
+object.
+
+To provide more readable messages in Boolean assertions (e.g. `EXPECT_TRUE()`),
+write a predicate function that returns `AssertionResult` instead of `bool`. For
+example, if you define `IsEven()` as:
+
+```c++
+::testing::AssertionResult IsEven(int n) {
+  if ((n % 2) == 0)
+     return ::testing::AssertionSuccess();
+  else
+     return ::testing::AssertionFailure() << n << " is odd";
+}
+```
+
+instead of:
+
+```c++
+bool IsEven(int n) {
+  return (n % 2) == 0;
+}
+```
+
+the failed assertion `EXPECT_TRUE(IsEven(Fib(4)))` will print:
+
+```none
+Value of: IsEven(Fib(4))
+  Actual: false (3 is odd)
+Expected: true
+```
+
+instead of a more opaque
+
+```none
+Value of: IsEven(Fib(4))
+  Actual: false
+Expected: true
+```
+
+If you want informative messages in `EXPECT_FALSE` and `ASSERT_FALSE` as well
+(one third of Boolean assertions in the Google code base are negative ones), and
+are fine with making the predicate slower in the success case, you can supply a
+success message:
+
+```c++
+::testing::AssertionResult IsEven(int n) {
+  if ((n % 2) == 0)
+     return ::testing::AssertionSuccess() << n << " is even";
+  else
+     return ::testing::AssertionFailure() << n << " is odd";
+}
+```
+
+Then the statement `EXPECT_FALSE(IsEven(Fib(6)))` will print
+
+```none
+  Value of: IsEven(Fib(6))
+     Actual: true (8 is even)
+  Expected: false
+```
+
+#### Using a Predicate-Formatter
+
+If you find the default message generated by `(ASSERT|EXPECT)_PRED*` and
+`(ASSERT|EXPECT)_(TRUE|FALSE)` unsatisfactory, or some arguments to your
+predicate do not support streaming to `ostream`, you can instead use the
+following *predicate-formatter assertions* to *fully* customize how the message
+is formatted:
+
+Fatal assertion                                  | Nonfatal assertion                               | Verifies
+------------------------------------------------ | ------------------------------------------------ | --------
+`ASSERT_PRED_FORMAT1(pred_format1, val1);`       | `EXPECT_PRED_FORMAT1(pred_format1, val1);`       | `pred_format1(val1)` is successful
+`ASSERT_PRED_FORMAT2(pred_format2, val1, val2);` | `EXPECT_PRED_FORMAT2(pred_format2, val1, val2);` | `pred_format2(val1, val2)` is successful
+`...`                                            | `...`                                            | ...
+
+The difference between this and the previous group of macros is that instead of
+a predicate, `(ASSERT|EXPECT)_PRED_FORMAT*` take a *predicate-formatter*
+(`pred_formatn`), which is a function or functor with the signature:
+
+```c++
+::testing::AssertionResult PredicateFormattern(const char* expr1,
+                                               const char* expr2,
+                                               ...
+                                               const char* exprn,
+                                               T1 val1,
+                                               T2 val2,
+                                               ...
+                                               Tn valn);
+```
+
+where `val1`, `val2`, ..., and `valn` are the values of the predicate arguments,
+and `expr1`, `expr2`, ..., and `exprn` are the corresponding expressions as they
+appear in the source code. The types `T1`, `T2`, ..., and `Tn` can be either
+value types or reference types. For example, if an argument has type `Foo`, you
+can declare it as either `Foo` or `const Foo&`, whichever is appropriate.
+
+As an example, let's improve the failure message in `MutuallyPrime()`, which was
+used with `EXPECT_PRED2()`:
+
+```c++
+// Returns the smallest prime common divisor of m and n,
+// or 1 when m and n are mutually prime.
+int SmallestPrimeCommonDivisor(int m, int n) { ... }
+
+// A predicate-formatter for asserting that two integers are mutually prime.
+::testing::AssertionResult AssertMutuallyPrime(const char* m_expr,
+                                               const char* n_expr,
+                                               int m,
+                                               int n) {
+  if (MutuallyPrime(m, n)) return ::testing::AssertionSuccess();
+
+  return ::testing::AssertionFailure() << m_expr << " and " << n_expr
+      << " (" << m << " and " << n << ") are not mutually prime, "
+      << "as they have a common divisor " << SmallestPrimeCommonDivisor(m, n);
+}
+```
+
+With this predicate-formatter, we can use
+
+```c++
+  EXPECT_PRED_FORMAT2(AssertMutuallyPrime, b, c);
+```
+
+to generate the message
+
+```none
+b and c (4 and 10) are not mutually prime, as they have a common divisor 2.
+```
+
+As you may have realized, many of the built-in assertions we introduced earlier
+are special cases of `(EXPECT|ASSERT)_PRED_FORMAT*`. In fact, most of them are
+indeed defined using `(EXPECT|ASSERT)_PRED_FORMAT*`.
+
+### Floating-Point Comparison
+
+Comparing floating-point numbers is tricky. Due to round-off errors, it is very
+unlikely that two floating-points will match exactly. Therefore, `ASSERT_EQ` 's
+naive comparison usually doesn't work. And since floating-points can have a wide
+value range, no single fixed error bound works. It's better to compare by a
+fixed relative error bound, except for values close to 0 due to the loss of
+precision there.
+
+In general, for floating-point comparison to make sense, the user needs to
+carefully choose the error bound. If they don't want or care to, comparing in
+terms of Units in the Last Place (ULPs) is a good default, and googletest
+provides assertions to do this. Full details about ULPs are quite long; if you
+want to learn more, see
+[here](https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/).
+
+#### Floating-Point Macros
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+| Fatal assertion                 | Nonfatal assertion              | Verifies                                 |
+| ------------------------------- | ------------------------------- | ---------------------------------------- |
+| `ASSERT_FLOAT_EQ(val1, val2);`  | `EXPECT_FLOAT_EQ(val1, val2);`  | the two `float` values are almost equal  |
+| `ASSERT_DOUBLE_EQ(val1, val2);` | `EXPECT_DOUBLE_EQ(val1, val2);` | the two `double` values are almost equal |
+
+<!-- mdformat on-->
+
+By "almost equal" we mean the values are within 4 ULP's from each other.
+
+The following assertions allow you to choose the acceptable error bound:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+| Fatal assertion                       | Nonfatal assertion                    | Verifies                                                                         |
+| ------------------------------------- | ------------------------------------- | -------------------------------------------------------------------------------- |
+| `ASSERT_NEAR(val1, val2, abs_error);` | `EXPECT_NEAR(val1, val2, abs_error);` | the difference between `val1` and `val2` doesn't exceed the given absolute error |
+
+<!-- mdformat on-->
+
+#### Floating-Point Predicate-Format Functions
+
+Some floating-point operations are useful, but not that often used. In order to
+avoid an explosion of new macros, we provide them as predicate-format functions
+that can be used in predicate assertion macros (e.g. `EXPECT_PRED_FORMAT2`,
+etc).
+
+```c++
+EXPECT_PRED_FORMAT2(::testing::FloatLE, val1, val2);
+EXPECT_PRED_FORMAT2(::testing::DoubleLE, val1, val2);
+```
+
+Verifies that `val1` is less than, or almost equal to, `val2`. You can replace
+`EXPECT_PRED_FORMAT2` in the above table with `ASSERT_PRED_FORMAT2`.
+
+### Asserting Using gMock Matchers
+
+[gMock](../../googlemock) comes with a library of matchers for validating
+arguments passed to mock objects. A gMock *matcher* is basically a predicate
+that knows how to describe itself. It can be used in these assertion macros:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+| Fatal assertion                | Nonfatal assertion             | Verifies              |
+| ------------------------------ | ------------------------------ | --------------------- |
+| `ASSERT_THAT(value, matcher);` | `EXPECT_THAT(value, matcher);` | value matches matcher |
+
+<!-- mdformat on-->
+
+For example, `StartsWith(prefix)` is a matcher that matches a string starting
+with `prefix`, and you can write:
+
+```c++
+using ::testing::StartsWith;
+...
+    // Verifies that Foo() returns a string starting with "Hello".
+    EXPECT_THAT(Foo(), StartsWith("Hello"));
+```
+
+Read this
+[recipe](../../googlemock/docs/cook_book.md#using-matchers-in-googletest-assertions)
+in the gMock Cookbook for more details.
+
+gMock has a rich set of matchers. You can do many things googletest cannot do
+alone with them. For a list of matchers gMock provides, read
+[this](../../googlemock/docs/cook_book.md##using-matchers). It's easy to write
+your [own matchers](../../googlemock/docs/cook_book.md#NewMatchers) too.
+
+gMock is bundled with googletest, so you don't need to add any build dependency
+in order to take advantage of this. Just include `"testing/base/public/gmock.h"`
+and you're ready to go.
+
+### More String Assertions
+
+(Please read the [previous](#asserting-using-gmock-matchers) section first if
+you haven't.)
+
+You can use the gMock
+[string matchers](../../googlemock/docs/cheat_sheet.md#string-matchers) with
+`EXPECT_THAT()` or `ASSERT_THAT()` to do more string comparison tricks
+(sub-string, prefix, suffix, regular expression, and etc). For example,
+
+```c++
+using ::testing::HasSubstr;
+using ::testing::MatchesRegex;
+...
+  ASSERT_THAT(foo_string, HasSubstr("needle"));
+  EXPECT_THAT(bar_string, MatchesRegex("\\w*\\d+"));
+```
+
+If the string contains a well-formed HTML or XML document, you can check whether
+its DOM tree matches an
+[XPath expression](http://www.w3.org/TR/xpath/#contents):
+
+```c++
+// Currently still in //template/prototemplate/testing:xpath_matcher
+#include "template/prototemplate/testing/xpath_matcher.h"
+using prototemplate::testing::MatchesXPath;
+EXPECT_THAT(html_string, MatchesXPath("//a[text()='click here']"));
+```
+
+### Windows HRESULT assertions
+
+These assertions test for `HRESULT` success or failure.
+
+Fatal assertion                        | Nonfatal assertion                     | Verifies
+-------------------------------------- | -------------------------------------- | --------
+`ASSERT_HRESULT_SUCCEEDED(expression)` | `EXPECT_HRESULT_SUCCEEDED(expression)` | `expression` is a success `HRESULT`
+`ASSERT_HRESULT_FAILED(expression)`    | `EXPECT_HRESULT_FAILED(expression)`    | `expression` is a failure `HRESULT`
+
+The generated output contains the human-readable error message associated with
+the `HRESULT` code returned by `expression`.
+
+You might use them like this:
+
+```c++
+CComPtr<IShellDispatch2> shell;
+ASSERT_HRESULT_SUCCEEDED(shell.CoCreateInstance(L"Shell.Application"));
+CComVariant empty;
+ASSERT_HRESULT_SUCCEEDED(shell->ShellExecute(CComBSTR(url), empty, empty, empty, empty));
+```
+
+### Type Assertions
+
+You can call the function
+
+```c++
+::testing::StaticAssertTypeEq<T1, T2>();
+```
+
+to assert that types `T1` and `T2` are the same. The function does nothing if
+the assertion is satisfied. If the types are different, the function call will
+fail to compile, the compiler error message will say that
+`type1 and type2 are not the same type` and most likely (depending on the compiler)
+show you the actual values of `T1` and `T2`. This is mainly useful inside
+template code.
+
+**Caveat**: When used inside a member function of a class template or a function
+template, `StaticAssertTypeEq<T1, T2>()` is effective only if the function is
+instantiated. For example, given:
+
+```c++
+template <typename T> class Foo {
+ public:
+  void Bar() { ::testing::StaticAssertTypeEq<int, T>(); }
+};
+```
+
+the code:
+
+```c++
+void Test1() { Foo<bool> foo; }
+```
+
+will not generate a compiler error, as `Foo<bool>::Bar()` is never actually
+instantiated. Instead, you need:
+
+```c++
+void Test2() { Foo<bool> foo; foo.Bar(); }
+```
+
+to cause a compiler error.
+
+### Assertion Placement
+
+You can use assertions in any C++ function. In particular, it doesn't have to be
+a method of the test fixture class. The one constraint is that assertions that
+generate a fatal failure (`FAIL*` and `ASSERT_*`) can only be used in
+void-returning functions. This is a consequence of Google's not using
+exceptions. By placing it in a non-void function you'll get a confusing compile
+error like `"error: void value not ignored as it ought to be"` or `"cannot
+initialize return object of type 'bool' with an rvalue of type 'void'"` or
+`"error: no viable conversion from 'void' to 'string'"`.
+
+If you need to use fatal assertions in a function that returns non-void, one
+option is to make the function return the value in an out parameter instead. For
+example, you can rewrite `T2 Foo(T1 x)` to `void Foo(T1 x, T2* result)`. You
+need to make sure that `*result` contains some sensible value even when the
+function returns prematurely. As the function now returns `void`, you can use
+any assertion inside of it.
+
+If changing the function's type is not an option, you should just use assertions
+that generate non-fatal failures, such as `ADD_FAILURE*` and `EXPECT_*`.
+
+NOTE: Constructors and destructors are not considered void-returning functions,
+according to the C++ language specification, and so you may not use fatal
+assertions in them; you'll get a compilation error if you try. Instead, either
+call `abort` and crash the entire test executable, or put the fatal assertion in
+a `SetUp`/`TearDown` function; see
+[constructor/destructor vs. `SetUp`/`TearDown`](faq.md#CtorVsSetUp)
+
+WARNING: A fatal assertion in a helper function (private void-returning method)
+called from a constructor or destructor does not does not terminate the current
+test, as your intuition might suggest: it merely returns from the constructor or
+destructor early, possibly leaving your object in a partially-constructed or
+partially-destructed state! You almost certainly want to `abort` or use
+`SetUp`/`TearDown` instead.
+
+## Teaching googletest How to Print Your Values
+
+When a test assertion such as `EXPECT_EQ` fails, googletest prints the argument
+values to help you debug. It does this using a user-extensible value printer.
+
+This printer knows how to print built-in C++ types, native arrays, STL
+containers, and any type that supports the `<<` operator. For other types, it
+prints the raw bytes in the value and hopes that you the user can figure it out.
+
+As mentioned earlier, the printer is *extensible*. That means you can teach it
+to do a better job at printing your particular type than to dump the bytes. To
+do that, define `<<` for your type:
+
+```c++
+#include <ostream>
+
+namespace foo {
+
+class Bar {  // We want googletest to be able to print instances of this.
+...
+  // Create a free inline friend function.
+  friend std::ostream& operator<<(std::ostream& os, const Bar& bar) {
+    return os << bar.DebugString();  // whatever needed to print bar to os
+  }
+};
+
+// If you can't declare the function in the class it's important that the
+// << operator is defined in the SAME namespace that defines Bar.  C++'s look-up
+// rules rely on that.
+std::ostream& operator<<(std::ostream& os, const Bar& bar) {
+  return os << bar.DebugString();  // whatever needed to print bar to os
+}
+
+}  // namespace foo
+```
+
+Sometimes, this might not be an option: your team may consider it bad style to
+have a `<<` operator for `Bar`, or `Bar` may already have a `<<` operator that
+doesn't do what you want (and you cannot change it). If so, you can instead
+define a `PrintTo()` function like this:
+
+```c++
+#include <ostream>
+
+namespace foo {
+
+class Bar {
+  ...
+  friend void PrintTo(const Bar& bar, std::ostream* os) {
+    *os << bar.DebugString();  // whatever needed to print bar to os
+  }
+};
+
+// If you can't declare the function in the class it's important that PrintTo()
+// is defined in the SAME namespace that defines Bar.  C++'s look-up rules rely
+// on that.
+void PrintTo(const Bar& bar, std::ostream* os) {
+  *os << bar.DebugString();  // whatever needed to print bar to os
+}
+
+}  // namespace foo
+```
+
+If you have defined both `<<` and `PrintTo()`, the latter will be used when
+googletest is concerned. This allows you to customize how the value appears in
+googletest's output without affecting code that relies on the behavior of its
+`<<` operator.
+
+If you want to print a value `x` using googletest's value printer yourself, just
+call `::testing::PrintToString(x)`, which returns an `std::string`:
+
+```c++
+vector<pair<Bar, int> > bar_ints = GetBarIntVector();
+
+EXPECT_TRUE(IsCorrectBarIntVector(bar_ints))
+    << "bar_ints = " << ::testing::PrintToString(bar_ints);
+```
+
+## Death Tests
+
+In many applications, there are assertions that can cause application failure if
+a condition is not met. These sanity checks, which ensure that the program is in
+a known good state, are there to fail at the earliest possible time after some
+program state is corrupted. If the assertion checks the wrong condition, then
+the program may proceed in an erroneous state, which could lead to memory
+corruption, security holes, or worse. Hence it is vitally important to test that
+such assertion statements work as expected.
+
+Since these precondition checks cause the processes to die, we call such tests
+_death tests_. More generally, any test that checks that a program terminates
+(except by throwing an exception) in an expected fashion is also a death test.
+
+Note that if a piece of code throws an exception, we don't consider it "death"
+for the purpose of death tests, as the caller of the code could catch the
+exception and avoid the crash. If you want to verify exceptions thrown by your
+code, see [Exception Assertions](#ExceptionAssertions).
+
+If you want to test `EXPECT_*()/ASSERT_*()` failures in your test code, see
+Catching Failures
+
+### How to Write a Death Test
+
+googletest has the following macros to support death tests:
+
+Fatal assertion                                  | Nonfatal assertion                               | Verifies
+------------------------------------------------ | ------------------------------------------------ | --------
+`ASSERT_DEATH(statement, matcher);`              | `EXPECT_DEATH(statement, matcher);`              | `statement` crashes with the given error
+`ASSERT_DEATH_IF_SUPPORTED(statement, matcher);` | `EXPECT_DEATH_IF_SUPPORTED(statement, matcher);` | if death tests are supported, verifies that `statement` crashes with the given error; otherwise verifies nothing
+`ASSERT_EXIT(statement, predicate, matcher);`    | `EXPECT_EXIT(statement, predicate, matcher);`    | `statement` exits with the given error, and its exit code matches `predicate`
+
+where `statement` is a statement that is expected to cause the process to die,
+`predicate` is a function or function object that evaluates an integer exit
+status, and `matcher` is either a GMock matcher matching a `const std::string&`
+or a (Perl) regular expression - either of which is matched against the stderr
+output of `statement`. For legacy reasons, a bare string (i.e. with no matcher)
+is interpreted as `ContainsRegex(str)`, **not** `Eq(str)`. Note that `statement`
+can be *any valid statement* (including *compound statement*) and doesn't have
+to be an expression.
+
+As usual, the `ASSERT` variants abort the current test function, while the
+`EXPECT` variants do not.
+
+> NOTE: We use the word "crash" here to mean that the process terminates with a
+> *non-zero* exit status code. There are two possibilities: either the process
+> has called `exit()` or `_exit()` with a non-zero value, or it may be killed by
+> a signal.
+>
+> This means that if `*statement*` terminates the process with a 0 exit code, it
+> is *not* considered a crash by `EXPECT_DEATH`. Use `EXPECT_EXIT` instead if
+> this is the case, or if you want to restrict the exit code more precisely.
+
+A predicate here must accept an `int` and return a `bool`. The death test
+succeeds only if the predicate returns `true`. googletest defines a few
+predicates that handle the most common cases:
+
+```c++
+::testing::ExitedWithCode(exit_code)
+```
+
+This expression is `true` if the program exited normally with the given exit
+code.
+
+```c++
+::testing::KilledBySignal(signal_number)  // Not available on Windows.
+```
+
+This expression is `true` if the program was killed by the given signal.
+
+The `*_DEATH` macros are convenient wrappers for `*_EXIT` that use a predicate
+that verifies the process' exit code is non-zero.
+
+Note that a death test only cares about three things:
+
+1.  does `statement` abort or exit the process?
+2.  (in the case of `ASSERT_EXIT` and `EXPECT_EXIT`) does the exit status
+    satisfy `predicate`? Or (in the case of `ASSERT_DEATH` and `EXPECT_DEATH`)
+    is the exit status non-zero? And
+3.  does the stderr output match `regex`?
+
+In particular, if `statement` generates an `ASSERT_*` or `EXPECT_*` failure, it
+will **not** cause the death test to fail, as googletest assertions don't abort
+the process.
+
+To write a death test, simply use one of the above macros inside your test
+function. For example,
+
+```c++
+TEST(MyDeathTest, Foo) {
+  // This death test uses a compound statement.
+  ASSERT_DEATH({
+    int n = 5;
+    Foo(&n);
+  }, "Error on line .* of Foo()");
+}
+
+TEST(MyDeathTest, NormalExit) {
+  EXPECT_EXIT(NormalExit(), ::testing::ExitedWithCode(0), "Success");
+}
+
+TEST(MyDeathTest, KillMyself) {
+  EXPECT_EXIT(KillMyself(), ::testing::KilledBySignal(SIGKILL),
+              "Sending myself unblockable signal");
+}
+```
+
+verifies that:
+
+*   calling `Foo(5)` causes the process to die with the given error message,
+*   calling `NormalExit()` causes the process to print `"Success"` to stderr and
+    exit with exit code 0, and
+*   calling `KillMyself()` kills the process with signal `SIGKILL`.
+
+The test function body may contain other assertions and statements as well, if
+necessary.
+
+### Death Test Naming
+
+IMPORTANT: We strongly recommend you to follow the convention of naming your
+**test suite** (not test) `*DeathTest` when it contains a death test, as
+demonstrated in the above example. The
+[Death Tests And Threads](#death-tests-and-threads) section below explains why.
+
+If a test fixture class is shared by normal tests and death tests, you can use
+`using` or `typedef` to introduce an alias for the fixture class and avoid
+duplicating its code:
+
+```c++
+class FooTest : public ::testing::Test { ... };
+
+using FooDeathTest = FooTest;
+
+TEST_F(FooTest, DoesThis) {
+  // normal test
+}
+
+TEST_F(FooDeathTest, DoesThat) {
+  // death test
+}
+```
+
+### Regular Expression Syntax
+
+On POSIX systems (e.g. Linux, Cygwin, and Mac), googletest uses the
+[POSIX extended regular expression](http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap09.html#tag_09_04)
+syntax. To learn about this syntax, you may want to read this
+[Wikipedia entry](http://en.wikipedia.org/wiki/Regular_expression#POSIX_Extended_Regular_Expressions).
+
+On Windows, googletest uses its own simple regular expression implementation. It
+lacks many features. For example, we don't support union (`"x|y"`), grouping
+(`"(xy)"`), brackets (`"[xy]"`), and repetition count (`"x{5,7}"`), among
+others. Below is what we do support (`A` denotes a literal character, period
+(`.`), or a single `\\ ` escape sequence; `x` and `y` denote regular
+expressions.):
+
+Expression | Meaning
+---------- | --------------------------------------------------------------
+`c`        | matches any literal character `c`
+`\\d`      | matches any decimal digit
+`\\D`      | matches any character that's not a decimal digit
+`\\f`      | matches `\f`
+`\\n`      | matches `\n`
+`\\r`      | matches `\r`
+`\\s`      | matches any ASCII whitespace, including `\n`
+`\\S`      | matches any character that's not a whitespace
+`\\t`      | matches `\t`
+`\\v`      | matches `\v`
+`\\w`      | matches any letter, `_`, or decimal digit
+`\\W`      | matches any character that `\\w` doesn't match
+`\\c`      | matches any literal character `c`, which must be a punctuation
+`.`        | matches any single character except `\n`
+`A?`       | matches 0 or 1 occurrences of `A`
+`A*`       | matches 0 or many occurrences of `A`
+`A+`       | matches 1 or many occurrences of `A`
+`^`        | matches the beginning of a string (not that of each line)
+`$`        | matches the end of a string (not that of each line)
+`xy`       | matches `x` followed by `y`
+
+To help you determine which capability is available on your system, googletest
+defines macros to govern which regular expression it is using. The macros are:
+`GTEST_USES_SIMPLE_RE=1` or `GTEST_USES_POSIX_RE=1`. If you want your death
+tests to work in all cases, you can either `#if` on these macros or use the more
+limited syntax only.
+
+### How It Works
+
+Under the hood, `ASSERT_EXIT()` spawns a new process and executes the death test
+statement in that process. The details of how precisely that happens depend on
+the platform and the variable ::testing::GTEST_FLAG(death_test_style) (which is
+initialized from the command-line flag `--gtest_death_test_style`).
+
+*   On POSIX systems, `fork()` (or `clone()` on Linux) is used to spawn the
+    child, after which:
+    *   If the variable's value is `"fast"`, the death test statement is
+        immediately executed.
+    *   If the variable's value is `"threadsafe"`, the child process re-executes
+        the unit test binary just as it was originally invoked, but with some
+        extra flags to cause just the single death test under consideration to
+        be run.
+*   On Windows, the child is spawned using the `CreateProcess()` API, and
+    re-executes the binary to cause just the single death test under
+    consideration to be run - much like the `threadsafe` mode on POSIX.
+
+Other values for the variable are illegal and will cause the death test to fail.
+Currently, the flag's default value is **"fast"**
+
+1.  the child's exit status satisfies the predicate, and
+2.  the child's stderr matches the regular expression.
+
+If the death test statement runs to completion without dying, the child process
+will nonetheless terminate, and the assertion fails.
+
+### Death Tests And Threads
+
+The reason for the two death test styles has to do with thread safety. Due to
+well-known problems with forking in the presence of threads, death tests should
+be run in a single-threaded context. Sometimes, however, it isn't feasible to
+arrange that kind of environment. For example, statically-initialized modules
+may start threads before main is ever reached. Once threads have been created,
+it may be difficult or impossible to clean them up.
+
+googletest has three features intended to raise awareness of threading issues.
+
+1.  A warning is emitted if multiple threads are running when a death test is
+    encountered.
+2.  Test suites with a name ending in "DeathTest" are run before all other
+    tests.
+3.  It uses `clone()` instead of `fork()` to spawn the child process on Linux
+    (`clone()` is not available on Cygwin and Mac), as `fork()` is more likely
+    to cause the child to hang when the parent process has multiple threads.
+
+It's perfectly fine to create threads inside a death test statement; they are
+executed in a separate process and cannot affect the parent.
+
+### Death Test Styles
+
+The "threadsafe" death test style was introduced in order to help mitigate the
+risks of testing in a possibly multithreaded environment. It trades increased
+test execution time (potentially dramatically so) for improved thread safety.
+
+The automated testing framework does not set the style flag. You can choose a
+particular style of death tests by setting the flag programmatically:
+
+```c++
+testing::FLAGS_gtest_death_test_style="threadsafe"
+```
+
+You can do this in `main()` to set the style for all death tests in the binary,
+or in individual tests. Recall that flags are saved before running each test and
+restored afterwards, so you need not do that yourself. For example:
+
+```c++
+int main(int argc, char** argv) {
+  InitGoogle(argv[0], &argc, &argv, true);
+  ::testing::FLAGS_gtest_death_test_style = "fast";
+  return RUN_ALL_TESTS();
+}
+
+TEST(MyDeathTest, TestOne) {
+  ::testing::FLAGS_gtest_death_test_style = "threadsafe";
+  // This test is run in the "threadsafe" style:
+  ASSERT_DEATH(ThisShouldDie(), "");
+}
+
+TEST(MyDeathTest, TestTwo) {
+  // This test is run in the "fast" style:
+  ASSERT_DEATH(ThisShouldDie(), "");
+}
+```
+
+### Caveats
+
+The `statement` argument of `ASSERT_EXIT()` can be any valid C++ statement. If
+it leaves the current function via a `return` statement or by throwing an
+exception, the death test is considered to have failed. Some googletest macros
+may return from the current function (e.g. `ASSERT_TRUE()`), so be sure to avoid
+them in `statement`.
+
+Since `statement` runs in the child process, any in-memory side effect (e.g.
+modifying a variable, releasing memory, etc) it causes will *not* be observable
+in the parent process. In particular, if you release memory in a death test,
+your program will fail the heap check as the parent process will never see the
+memory reclaimed. To solve this problem, you can
+
+1.  try not to free memory in a death test;
+2.  free the memory again in the parent process; or
+3.  do not use the heap checker in your program.
+
+Due to an implementation detail, you cannot place multiple death test assertions
+on the same line; otherwise, compilation will fail with an unobvious error
+message.
+
+Despite the improved thread safety afforded by the "threadsafe" style of death
+test, thread problems such as deadlock are still possible in the presence of
+handlers registered with `pthread_atfork(3)`.
+
+
+## Using Assertions in Sub-routines
+
+### Adding Traces to Assertions
+
+If a test sub-routine is called from several places, when an assertion inside it
+fails, it can be hard to tell which invocation of the sub-routine the failure is
+from. You can alleviate this problem using extra logging or custom failure
+messages, but that usually clutters up your tests. A better solution is to use
+the `SCOPED_TRACE` macro or the `ScopedTrace` utility:
+
+```c++
+SCOPED_TRACE(message);
+ScopedTrace trace("file_path", line_number, message);
+```
+
+where `message` can be anything streamable to `std::ostream`. `SCOPED_TRACE`
+macro will cause the current file name, line number, and the given message to be
+added in every failure message. `ScopedTrace` accepts explicit file name and
+line number in arguments, which is useful for writing test helpers. The effect
+will be undone when the control leaves the current lexical scope.
+
+For example,
+
+```c++
+10: void Sub1(int n) {
+11:   EXPECT_EQ(Bar(n), 1);
+12:   EXPECT_EQ(Bar(n + 1), 2);
+13: }
+14:
+15: TEST(FooTest, Bar) {
+16:   {
+17:     SCOPED_TRACE("A");  // This trace point will be included in
+18:                         // every failure in this scope.
+19:     Sub1(1);
+20:   }
+21:   // Now it won't.
+22:   Sub1(9);
+23: }
+```
+
+could result in messages like these:
+
+```none
+path/to/foo_test.cc:11: Failure
+Value of: Bar(n)
+Expected: 1
+  Actual: 2
+   Trace:
+path/to/foo_test.cc:17: A
+
+path/to/foo_test.cc:12: Failure
+Value of: Bar(n + 1)
+Expected: 2
+  Actual: 3
+```
+
+Without the trace, it would've been difficult to know which invocation of
+`Sub1()` the two failures come from respectively. (You could add an extra
+message to each assertion in `Sub1()` to indicate the value of `n`, but that's
+tedious.)
+
+Some tips on using `SCOPED_TRACE`:
+
+1.  With a suitable message, it's often enough to use `SCOPED_TRACE` at the
+    beginning of a sub-routine, instead of at each call site.
+2.  When calling sub-routines inside a loop, make the loop iterator part of the
+    message in `SCOPED_TRACE` such that you can know which iteration the failure
+    is from.
+3.  Sometimes the line number of the trace point is enough for identifying the
+    particular invocation of a sub-routine. In this case, you don't have to
+    choose a unique message for `SCOPED_TRACE`. You can simply use `""`.
+4.  You can use `SCOPED_TRACE` in an inner scope when there is one in the outer
+    scope. In this case, all active trace points will be included in the failure
+    messages, in reverse order they are encountered.
+5.  The trace dump is clickable in Emacs - hit `return` on a line number and
+    you'll be taken to that line in the source file!
+
+### Propagating Fatal Failures
+
+A common pitfall when using `ASSERT_*` and `FAIL*` is not understanding that
+when they fail they only abort the _current function_, not the entire test. For
+example, the following test will segfault:
+
+```c++
+void Subroutine() {
+  // Generates a fatal failure and aborts the current function.
+  ASSERT_EQ(1, 2);
+
+  // The following won't be executed.
+  ...
+}
+
+TEST(FooTest, Bar) {
+  Subroutine();  // The intended behavior is for the fatal failure
+                 // in Subroutine() to abort the entire test.
+
+  // The actual behavior: the function goes on after Subroutine() returns.
+  int* p = NULL;
+  *p = 3;  // Segfault!
+}
+```
+
+To alleviate this, googletest provides three different solutions. You could use
+either exceptions, the `(ASSERT|EXPECT)_NO_FATAL_FAILURE` assertions or the
+`HasFatalFailure()` function. They are described in the following two
+subsections.
+
+#### Asserting on Subroutines with an exception
+
+The following code can turn ASSERT-failure into an exception:
+
+```c++
+class ThrowListener : public testing::EmptyTestEventListener {
+  void OnTestPartResult(const testing::TestPartResult& result) override {
+    if (result.type() == testing::TestPartResult::kFatalFailure) {
+      throw testing::AssertionException(result);
+    }
+  }
+};
+int main(int argc, char** argv) {
+  ...
+  testing::UnitTest::GetInstance()->listeners().Append(new ThrowListener);
+  return RUN_ALL_TESTS();
+}
+```
+
+This listener should be added after other listeners if you have any, otherwise
+they won't see failed `OnTestPartResult`.
+
+#### Asserting on Subroutines
+
+As shown above, if your test calls a subroutine that has an `ASSERT_*` failure
+in it, the test will continue after the subroutine returns. This may not be what
+you want.
+
+Often people want fatal failures to propagate like exceptions. For that
+googletest offers the following macros:
+
+Fatal assertion                       | Nonfatal assertion                    | Verifies
+------------------------------------- | ------------------------------------- | --------
+`ASSERT_NO_FATAL_FAILURE(statement);` | `EXPECT_NO_FATAL_FAILURE(statement);` | `statement` doesn't generate any new fatal failures in the current thread.
+
+Only failures in the thread that executes the assertion are checked to determine
+the result of this type of assertions. If `statement` creates new threads,
+failures in these threads are ignored.
+
+Examples:
+
+```c++
+ASSERT_NO_FATAL_FAILURE(Foo());
+
+int i;
+EXPECT_NO_FATAL_FAILURE({
+  i = Bar();
+});
+```
+
+Assertions from multiple threads are currently not supported on Windows.
+
+#### Checking for Failures in the Current Test
+
+`HasFatalFailure()` in the `::testing::Test` class returns `true` if an
+assertion in the current test has suffered a fatal failure. This allows
+functions to catch fatal failures in a sub-routine and return early.
+
+```c++
+class Test {
+ public:
+  ...
+  static bool HasFatalFailure();
+};
+```
+
+The typical usage, which basically simulates the behavior of a thrown exception,
+is:
+
+```c++
+TEST(FooTest, Bar) {
+  Subroutine();
+  // Aborts if Subroutine() had a fatal failure.
+  if (HasFatalFailure()) return;
+
+  // The following won't be executed.
+  ...
+}
+```
+
+If `HasFatalFailure()` is used outside of `TEST()` , `TEST_F()` , or a test
+fixture, you must add the `::testing::Test::` prefix, as in:
+
+```c++
+if (::testing::Test::HasFatalFailure()) return;
+```
+
+Similarly, `HasNonfatalFailure()` returns `true` if the current test has at
+least one non-fatal failure, and `HasFailure()` returns `true` if the current
+test has at least one failure of either kind.
+
+## Logging Additional Information
+
+In your test code, you can call `RecordProperty("key", value)` to log additional
+information, where `value` can be either a string or an `int`. The *last* value
+recorded for a key will be emitted to the
+[XML output](#generating-an-xml-report) if you specify one. For example, the
+test
+
+```c++
+TEST_F(WidgetUsageTest, MinAndMaxWidgets) {
+  RecordProperty("MaximumWidgets", ComputeMaxUsage());
+  RecordProperty("MinimumWidgets", ComputeMinUsage());
+}
+```
+
+will output XML like this:
+
+```xml
+  ...
+    <testcase name="MinAndMaxWidgets" status="run" time="0.006" classname="WidgetUsageTest" MaximumWidgets="12" MinimumWidgets="9" />
+  ...
+```
+
+> NOTE:
+>
+> *   `RecordProperty()` is a static member of the `Test` class. Therefore it
+>     needs to be prefixed with `::testing::Test::` if used outside of the
+>     `TEST` body and the test fixture class.
+> *   `*key*` must be a valid XML attribute name, and cannot conflict with the
+>     ones already used by googletest (`name`, `status`, `time`, `classname`,
+>     `type_param`, and `value_param`).
+> *   Calling `RecordProperty()` outside of the lifespan of a test is allowed.
+>     If it's called outside of a test but between a test suite's
+>     `SetUpTestSuite()` and `TearDownTestSuite()` methods, it will be
+>     attributed to the XML element for the test suite. If it's called outside
+>     of all test suites (e.g. in a test environment), it will be attributed to
+>     the top-level XML element.
+
+## Sharing Resources Between Tests in the Same Test Suite
+
+googletest creates a new test fixture object for each test in order to make
+tests independent and easier to debug. However, sometimes tests use resources
+that are expensive to set up, making the one-copy-per-test model prohibitively
+expensive.
+
+If the tests don't change the resource, there's no harm in their sharing a
+single resource copy. So, in addition to per-test set-up/tear-down, googletest
+also supports per-test-suite set-up/tear-down. To use it:
+
+1.  In your test fixture class (say `FooTest` ), declare as `static` some member
+    variables to hold the shared resources.
+2.  Outside your test fixture class (typically just below it), define those
+    member variables, optionally giving them initial values.
+3.  In the same test fixture class, define a `static void SetUpTestSuite()`
+    function (remember not to spell it as **`SetupTestSuite`** with a small
+    `u`!) to set up the shared resources and a `static void TearDownTestSuite()`
+    function to tear them down.
+
+That's it! googletest automatically calls `SetUpTestSuite()` before running the
+*first test* in the `FooTest` test suite (i.e. before creating the first
+`FooTest` object), and calls `TearDownTestSuite()` after running the *last test*
+in it (i.e. after deleting the last `FooTest` object). In between, the tests can
+use the shared resources.
+
+Remember that the test order is undefined, so your code can't depend on a test
+preceding or following another. Also, the tests must either not modify the state
+of any shared resource, or, if they do modify the state, they must restore the
+state to its original value before passing control to the next test.
+
+Here's an example of per-test-suite set-up and tear-down:
+
+```c++
+class FooTest : public ::testing::Test {
+ protected:
+  // Per-test-suite set-up.
+  // Called before the first test in this test suite.
+  // Can be omitted if not needed.
+  static void SetUpTestSuite() {
+    shared_resource_ = new ...;
+  }
+
+  // Per-test-suite tear-down.
+  // Called after the last test in this test suite.
+  // Can be omitted if not needed.
+  static void TearDownTestSuite() {
+    delete shared_resource_;
+    shared_resource_ = NULL;
+  }
+
+  // You can define per-test set-up logic as usual.
+  virtual void SetUp() { ... }
+
+  // You can define per-test tear-down logic as usual.
+  virtual void TearDown() { ... }
+
+  // Some expensive resource shared by all tests.
+  static T* shared_resource_;
+};
+
+T* FooTest::shared_resource_ = NULL;
+
+TEST_F(FooTest, Test1) {
+  ... you can refer to shared_resource_ here ...
+}
+
+TEST_F(FooTest, Test2) {
+  ... you can refer to shared_resource_ here ...
+}
+```
+
+NOTE: Though the above code declares `SetUpTestSuite()` protected, it may
+sometimes be necessary to declare it public, such as when using it with
+`TEST_P`.
+
+## Global Set-Up and Tear-Down
+
+Just as you can do set-up and tear-down at the test level and the test suite
+level, you can also do it at the test program level. Here's how.
+
+First, you subclass the `::testing::Environment` class to define a test
+environment, which knows how to set-up and tear-down:
+
+```c++
+class Environment : public ::testing::Environment {
+ public:
+  virtual ~Environment() {}
+
+  // Override this to define how to set up the environment.
+  void SetUp() override {}
+
+  // Override this to define how to tear down the environment.
+  void TearDown() override {}
+};
+```
+
+Then, you register an instance of your environment class with googletest by
+calling the `::testing::AddGlobalTestEnvironment()` function:
+
+```c++
+Environment* AddGlobalTestEnvironment(Environment* env);
+```
+
+Now, when `RUN_ALL_TESTS()` is called, it first calls the `SetUp()` method of
+each environment object, then runs the tests if none of the environments
+reported fatal failures and `GTEST_SKIP()` was not called. `RUN_ALL_TESTS()`
+always calls `TearDown()` with each environment object, regardless of whether or
+not the tests were run.
+
+It's OK to register multiple environment objects. In this suite, their `SetUp()`
+will be called in the order they are registered, and their `TearDown()` will be
+called in the reverse order.
+
+Note that googletest takes ownership of the registered environment objects.
+Therefore **do not delete them** by yourself.
+
+You should call `AddGlobalTestEnvironment()` before `RUN_ALL_TESTS()` is called,
+probably in `main()`. If you use `gtest_main`, you need to call this before
+`main()` starts for it to take effect. One way to do this is to define a global
+variable like this:
+
+```c++
+::testing::Environment* const foo_env =
+    ::testing::AddGlobalTestEnvironment(new FooEnvironment);
+```
+
+However, we strongly recommend you to write your own `main()` and call
+`AddGlobalTestEnvironment()` there, as relying on initialization of global
+variables makes the code harder to read and may cause problems when you register
+multiple environments from different translation units and the environments have
+dependencies among them (remember that the compiler doesn't guarantee the order
+in which global variables from different translation units are initialized).
+
+## Value-Parameterized Tests
+
+*Value-parameterized tests* allow you to test your code with different
+parameters without writing multiple copies of the same test. This is useful in a
+number of situations, for example:
+
+*   You have a piece of code whose behavior is affected by one or more
+    command-line flags. You want to make sure your code performs correctly for
+    various values of those flags.
+*   You want to test different implementations of an OO interface.
+*   You want to test your code over various inputs (a.k.a. data-driven testing).
+    This feature is easy to abuse, so please exercise your good sense when doing
+    it!
+
+### How to Write Value-Parameterized Tests
+
+To write value-parameterized tests, first you should define a fixture class. It
+must be derived from both `testing::Test` and `testing::WithParamInterface<T>`
+(the latter is a pure interface), where `T` is the type of your parameter
+values. For convenience, you can just derive the fixture class from
+`testing::TestWithParam<T>`, which itself is derived from both `testing::Test`
+and `testing::WithParamInterface<T>`. `T` can be any copyable type. If it's a
+raw pointer, you are responsible for managing the lifespan of the pointed
+values.
+
+NOTE: If your test fixture defines `SetUpTestSuite()` or `TearDownTestSuite()`
+they must be declared **public** rather than **protected** in order to use
+`TEST_P`.
+
+```c++
+class FooTest :
+    public testing::TestWithParam<const char*> {
+  // You can implement all the usual fixture class members here.
+  // To access the test parameter, call GetParam() from class
+  // TestWithParam<T>.
+};
+
+// Or, when you want to add parameters to a pre-existing fixture class:
+class BaseTest : public testing::Test {
+  ...
+};
+class BarTest : public BaseTest,
+                public testing::WithParamInterface<const char*> {
+  ...
+};
+```
+
+Then, use the `TEST_P` macro to define as many test patterns using this fixture
+as you want. The `_P` suffix is for "parameterized" or "pattern", whichever you
+prefer to think.
+
+```c++
+TEST_P(FooTest, DoesBlah) {
+  // Inside a test, access the test parameter with the GetParam() method
+  // of the TestWithParam<T> class:
+  EXPECT_TRUE(foo.Blah(GetParam()));
+  ...
+}
+
+TEST_P(FooTest, HasBlahBlah) {
+  ...
+}
+```
+
+Finally, you can use `INSTANTIATE_TEST_SUITE_P` to instantiate the test suite
+with any set of parameters you want. googletest defines a number of functions
+for generating test parameters. They return what we call (surprise!) *parameter
+generators*. Here is a summary of them, which are all in the `testing`
+namespace:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+| Parameter Generator                                                                       | Behavior                                                                                                          |
+| ----------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------- |
+| `Range(begin, end [, step])`                                                              | Yields values `{begin, begin+step, begin+step+step, ...}`. The values do not include `end`. `step` defaults to 1. |
+| `Values(v1, v2, ..., vN)`                                                                 | Yields values `{v1, v2, ..., vN}`.                                                                                |
+| `ValuesIn(container)` and  `ValuesIn(begin,end)`                                          | Yields values from a C-style array, an  STL-style container, or an iterator range `[begin, end)`                  |
+| `Bool()`                                                                                  | Yields sequence `{false, true}`.                                                                                  |
+| `Combine(g1, g2, ..., gN)`                                                                | Yields all combinations (Cartesian product) as std\:\:tuples of the values generated by the `N` generators.       |
+
+<!-- mdformat on-->
+
+For more details, see the comments at the definitions of these functions.
+
+The following statement will instantiate tests from the `FooTest` test suite
+each with parameter values `"meeny"`, `"miny"`, and `"moe"`.
+
+```c++
+INSTANTIATE_TEST_SUITE_P(InstantiationName,
+                         FooTest,
+                         testing::Values("meeny", "miny", "moe"));
+```
+
+NOTE: The code above must be placed at global or namespace scope, not at
+function scope.
+
+NOTE: Don't forget this step! If you do your test will silently pass, but none
+of its suites will ever run!
+
+To distinguish different instances of the pattern (yes, you can instantiate it
+more than once), the first argument to `INSTANTIATE_TEST_SUITE_P` is a prefix
+that will be added to the actual test suite name. Remember to pick unique
+prefixes for different instantiations. The tests from the instantiation above
+will have these names:
+
+*   `InstantiationName/FooTest.DoesBlah/0` for `"meeny"`
+*   `InstantiationName/FooTest.DoesBlah/1` for `"miny"`
+*   `InstantiationName/FooTest.DoesBlah/2` for `"moe"`
+*   `InstantiationName/FooTest.HasBlahBlah/0` for `"meeny"`
+*   `InstantiationName/FooTest.HasBlahBlah/1` for `"miny"`
+*   `InstantiationName/FooTest.HasBlahBlah/2` for `"moe"`
+
+You can use these names in [`--gtest_filter`](#running-a-subset-of-the-tests).
+
+This statement will instantiate all tests from `FooTest` again, each with
+parameter values `"cat"` and `"dog"`:
+
+```c++
+const char* pets[] = {"cat", "dog"};
+INSTANTIATE_TEST_SUITE_P(AnotherInstantiationName, FooTest,
+                         testing::ValuesIn(pets));
+```
+
+The tests from the instantiation above will have these names:
+
+*   `AnotherInstantiationName/FooTest.DoesBlah/0` for `"cat"`
+*   `AnotherInstantiationName/FooTest.DoesBlah/1` for `"dog"`
+*   `AnotherInstantiationName/FooTest.HasBlahBlah/0` for `"cat"`
+*   `AnotherInstantiationName/FooTest.HasBlahBlah/1` for `"dog"`
+
+Please note that `INSTANTIATE_TEST_SUITE_P` will instantiate *all* tests in the
+given test suite, whether their definitions come before or *after* the
+`INSTANTIATE_TEST_SUITE_P` statement.
+
+You can see [sample7_unittest.cc] and [sample8_unittest.cc] for more examples.
+
+[sample7_unittest.cc]: ../samples/sample7_unittest.cc "Parameterized Test example"
+[sample8_unittest.cc]: ../samples/sample8_unittest.cc "Parameterized Test example with multiple parameters"
+
+### Creating Value-Parameterized Abstract Tests
+
+In the above, we define and instantiate `FooTest` in the *same* source file.
+Sometimes you may want to define value-parameterized tests in a library and let
+other people instantiate them later. This pattern is known as *abstract tests*.
+As an example of its application, when you are designing an interface you can
+write a standard suite of abstract tests (perhaps using a factory function as
+the test parameter) that all implementations of the interface are expected to
+pass. When someone implements the interface, they can instantiate your suite to
+get all the interface-conformance tests for free.
+
+To define abstract tests, you should organize your code like this:
+
+1.  Put the definition of the parameterized test fixture class (e.g. `FooTest`)
+    in a header file, say `foo_param_test.h`. Think of this as *declaring* your
+    abstract tests.
+2.  Put the `TEST_P` definitions in `foo_param_test.cc`, which includes
+    `foo_param_test.h`. Think of this as *implementing* your abstract tests.
+
+Once they are defined, you can instantiate them by including `foo_param_test.h`,
+invoking `INSTANTIATE_TEST_SUITE_P()`, and depending on the library target that
+contains `foo_param_test.cc`. You can instantiate the same abstract test suite
+multiple times, possibly in different source files.
+
+### Specifying Names for Value-Parameterized Test Parameters
+
+The optional last argument to `INSTANTIATE_TEST_SUITE_P()` allows the user to
+specify a function or functor that generates custom test name suffixes based on
+the test parameters. The function should accept one argument of type
+`testing::TestParamInfo<class ParamType>`, and return `std::string`.
+
+`testing::PrintToStringParamName` is a builtin test suffix generator that
+returns the value of `testing::PrintToString(GetParam())`. It does not work for
+`std::string` or C strings.
+
+NOTE: test names must be non-empty, unique, and may only contain ASCII
+alphanumeric characters. In particular, they
+[should not contain underscores](faq.md#why-should-test-suite-names-and-test-names-not-contain-underscore)
+
+```c++
+class MyTestSuite : public testing::TestWithParam<int> {};
+
+TEST_P(MyTestSuite, MyTest)
+{
+  std::cout << "Example Test Param: " << GetParam() << std::endl;
+}
+
+INSTANTIATE_TEST_SUITE_P(MyGroup, MyTestSuite, testing::Range(0, 10),
+                         testing::PrintToStringParamName());
+```
+
+Providing a custom functor allows for more control over test parameter name
+generation, especially for types where the automatic conversion does not
+generate helpful parameter names (e.g. strings as demonstrated above). The
+following example illustrates this for multiple parameters, an enumeration type
+and a string, and also demonstrates how to combine generators. It uses a lambda
+for conciseness:
+
+```c++
+enum class MyType { MY_FOO = 0, MY_BAR = 1 };
+
+class MyTestSuite : public testing::TestWithParam<std::tuple<MyType, string>> {
+};
+
+INSTANTIATE_TEST_SUITE_P(
+    MyGroup, MyTestSuite,
+    testing::Combine(
+        testing::Values(MyType::VALUE_0, MyType::VALUE_1),
+        testing::ValuesIn("", "")),
+    [](const testing::TestParamInfo<MyTestSuite::ParamType>& info) {
+      string name = absl::StrCat(
+          std::get<0>(info.param) == MY_FOO ? "Foo" : "Bar", "_",
+          std::get<1>(info.param));
+      absl::c_replace_if(name, [](char c) { return !std::isalnum(c); }, '_');
+      return name;
+    });
+```
+
+## Typed Tests
+
+Suppose you have multiple implementations of the same interface and want to make
+sure that all of them satisfy some common requirements. Or, you may have defined
+several types that are supposed to conform to the same "concept" and you want to
+verify it. In both cases, you want the same test logic repeated for different
+types.
+
+While you can write one `TEST` or `TEST_F` for each type you want to test (and
+you may even factor the test logic into a function template that you invoke from
+the `TEST`), it's tedious and doesn't scale: if you want `m` tests over `n`
+types, you'll end up writing `m*n` `TEST`s.
+
+*Typed tests* allow you to repeat the same test logic over a list of types. You
+only need to write the test logic once, although you must know the type list
+when writing typed tests. Here's how you do it:
+
+First, define a fixture class template. It should be parameterized by a type.
+Remember to derive it from `::testing::Test`:
+
+```c++
+template <typename T>
+class FooTest : public ::testing::Test {
+ public:
+  ...
+  typedef std::list<T> List;
+  static T shared_;
+  T value_;
+};
+```
+
+Next, associate a list of types with the test suite, which will be repeated for
+each type in the list:
+
+```c++
+using MyTypes = ::testing::Types<char, int, unsigned int>;
+TYPED_TEST_SUITE(FooTest, MyTypes);
+```
+
+The type alias (`using` or `typedef`) is necessary for the `TYPED_TEST_SUITE`
+macro to parse correctly. Otherwise the compiler will think that each comma in
+the type list introduces a new macro argument.
+
+Then, use `TYPED_TEST()` instead of `TEST_F()` to define a typed test for this
+test suite. You can repeat this as many times as you want:
+
+```c++
+TYPED_TEST(FooTest, DoesBlah) {
+  // Inside a test, refer to the special name TypeParam to get the type
+  // parameter.  Since we are inside a derived class template, C++ requires
+  // us to visit the members of FooTest via 'this'.
+  TypeParam n = this->value_;
+
+  // To visit static members of the fixture, add the 'TestFixture::'
+  // prefix.
+  n += TestFixture::shared_;
+
+  // To refer to typedefs in the fixture, add the 'typename TestFixture::'
+  // prefix.  The 'typename' is required to satisfy the compiler.
+  typename TestFixture::List values;
+
+  values.push_back(n);
+  ...
+}
+
+TYPED_TEST(FooTest, HasPropertyA) { ... }
+```
+
+You can see [sample6_unittest.cc] for a complete example.
+
+[sample6_unittest.cc]: ../samples/sample6_unittest.cc "Typed Test example"
+
+## Type-Parameterized Tests
+
+*Type-parameterized tests* are like typed tests, except that they don't require
+you to know the list of types ahead of time. Instead, you can define the test
+logic first and instantiate it with different type lists later. You can even
+instantiate it more than once in the same program.
+
+If you are designing an interface or concept, you can define a suite of
+type-parameterized tests to verify properties that any valid implementation of
+the interface/concept should have. Then, the author of each implementation can
+just instantiate the test suite with their type to verify that it conforms to
+the requirements, without having to write similar tests repeatedly. Here's an
+example:
+
+First, define a fixture class template, as we did with typed tests:
+
+```c++
+template <typename T>
+class FooTest : public ::testing::Test {
+  ...
+};
+```
+
+Next, declare that you will define a type-parameterized test suite:
+
+```c++
+TYPED_TEST_SUITE_P(FooTest);
+```
+
+Then, use `TYPED_TEST_P()` to define a type-parameterized test. You can repeat
+this as many times as you want:
+
+```c++
+TYPED_TEST_P(FooTest, DoesBlah) {
+  // Inside a test, refer to TypeParam to get the type parameter.
+  TypeParam n = 0;
+  ...
+}
+
+TYPED_TEST_P(FooTest, HasPropertyA) { ... }
+```
+
+Now the tricky part: you need to register all test patterns using the
+`REGISTER_TYPED_TEST_SUITE_P` macro before you can instantiate them. The first
+argument of the macro is the test suite name; the rest are the names of the
+tests in this test suite:
+
+```c++
+REGISTER_TYPED_TEST_SUITE_P(FooTest,
+                            DoesBlah, HasPropertyA);
+```
+
+Finally, you are free to instantiate the pattern with the types you want. If you
+put the above code in a header file, you can `#include` it in multiple C++
+source files and instantiate it multiple times.
+
+```c++
+typedef ::testing::Types<char, int, unsigned int> MyTypes;
+INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes);
+```
+
+To distinguish different instances of the pattern, the first argument to the
+`INSTANTIATE_TYPED_TEST_SUITE_P` macro is a prefix that will be added to the
+actual test suite name. Remember to pick unique prefixes for different
+instances.
+
+In the special case where the type list contains only one type, you can write
+that type directly without `::testing::Types<...>`, like this:
+
+```c++
+INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, int);
+```
+
+You can see [sample6_unittest.cc] for a complete example.
+
+## Testing Private Code
+
+If you change your software's internal implementation, your tests should not
+break as long as the change is not observable by users. Therefore, **per the
+black-box testing principle, most of the time you should test your code through
+its public interfaces.**
+
+**If you still find yourself needing to test internal implementation code,
+consider if there's a better design.** The desire to test internal
+implementation is often a sign that the class is doing too much. Consider
+extracting an implementation class, and testing it. Then use that implementation
+class in the original class.
+
+If you absolutely have to test non-public interface code though, you can. There
+are two cases to consider:
+
+*   Static functions ( *not* the same as static member functions!) or unnamed
+    namespaces, and
+*   Private or protected class members
+
+To test them, we use the following special techniques:
+
+*   Both static functions and definitions/declarations in an unnamed namespace
+    are only visible within the same translation unit. To test them, you can
+    `#include` the entire `.cc` file being tested in your `*_test.cc` file.
+    (#including `.cc` files is not a good way to reuse code - you should not do
+    this in production code!)
+
+    However, a better approach is to move the private code into the
+    `foo::internal` namespace, where `foo` is the namespace your project
+    normally uses, and put the private declarations in a `*-internal.h` file.
+    Your production `.cc` files and your tests are allowed to include this
+    internal header, but your clients are not. This way, you can fully test your
+    internal implementation without leaking it to your clients.
+
+*   Private class members are only accessible from within the class or by
+    friends. To access a class' private members, you can declare your test
+    fixture as a friend to the class and define accessors in your fixture. Tests
+    using the fixture can then access the private members of your production
+    class via the accessors in the fixture. Note that even though your fixture
+    is a friend to your production class, your tests are not automatically
+    friends to it, as they are technically defined in sub-classes of the
+    fixture.
+
+    Another way to test private members is to refactor them into an
+    implementation class, which is then declared in a `*-internal.h` file. Your
+    clients aren't allowed to include this header but your tests can. Such is
+    called the
+    [Pimpl](https://www.gamedev.net/articles/programming/general-and-gameplay-programming/the-c-pimpl-r1794/)
+    (Private Implementation) idiom.
+
+    Or, you can declare an individual test as a friend of your class by adding
+    this line in the class body:
+
+    ```c++
+        FRIEND_TEST(TestSuiteName, TestName);
+    ```
+
+    For example,
+
+    ```c++
+    // foo.h
+    class Foo {
+      ...
+     private:
+      FRIEND_TEST(FooTest, BarReturnsZeroOnNull);
+
+      int Bar(void* x);
+    };
+
+    // foo_test.cc
+    ...
+    TEST(FooTest, BarReturnsZeroOnNull) {
+      Foo foo;
+      EXPECT_EQ(foo.Bar(NULL), 0);  // Uses Foo's private member Bar().
+    }
+    ```
+
+    Pay special attention when your class is defined in a namespace, as you
+    should define your test fixtures and tests in the same namespace if you want
+    them to be friends of your class. For example, if the code to be tested
+    looks like:
+
+    ```c++
+    namespace my_namespace {
+
+    class Foo {
+      friend class FooTest;
+      FRIEND_TEST(FooTest, Bar);
+      FRIEND_TEST(FooTest, Baz);
+      ... definition of the class Foo ...
+    };
+
+    }  // namespace my_namespace
+    ```
+
+    Your test code should be something like:
+
+    ```c++
+    namespace my_namespace {
+
+    class FooTest : public ::testing::Test {
+     protected:
+      ...
+    };
+
+    TEST_F(FooTest, Bar) { ... }
+    TEST_F(FooTest, Baz) { ... }
+
+    }  // namespace my_namespace
+    ```
+
+## "Catching" Failures
+
+If you are building a testing utility on top of googletest, you'll want to test
+your utility. What framework would you use to test it? googletest, of course.
+
+The challenge is to verify that your testing utility reports failures correctly.
+In frameworks that report a failure by throwing an exception, you could catch
+the exception and assert on it. But googletest doesn't use exceptions, so how do
+we test that a piece of code generates an expected failure?
+
+gunit-spi.h contains some constructs to do this. After #including this header,
+you can use
+
+```c++
+  EXPECT_FATAL_FAILURE(statement, substring);
+```
+
+to assert that `statement` generates a fatal (e.g. `ASSERT_*`) failure in the
+current thread whose message contains the given `substring`, or use
+
+```c++
+  EXPECT_NONFATAL_FAILURE(statement, substring);
+```
+
+if you are expecting a non-fatal (e.g. `EXPECT_*`) failure.
+
+Only failures in the current thread are checked to determine the result of this
+type of expectations. If `statement` creates new threads, failures in these
+threads are also ignored. If you want to catch failures in other threads as
+well, use one of the following macros instead:
+
+```c++
+  EXPECT_FATAL_FAILURE_ON_ALL_THREADS(statement, substring);
+  EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(statement, substring);
+```
+
+NOTE: Assertions from multiple threads are currently not supported on Windows.
+
+For technical reasons, there are some caveats:
+
+1.  You cannot stream a failure message to either macro.
+
+2.  `statement` in `EXPECT_FATAL_FAILURE{_ON_ALL_THREADS}()` cannot reference
+    local non-static variables or non-static members of `this` object.
+
+3.  `statement` in `EXPECT_FATAL_FAILURE{_ON_ALL_THREADS}()` cannot return a
+    value.
+
+## Registering tests programmatically
+
+The `TEST` macros handle the vast majority of all use cases, but there are few
+were runtime registration logic is required. For those cases, the framework
+provides the `::testing::RegisterTest` that allows callers to register arbitrary
+tests dynamically.
+
+This is an advanced API only to be used when the `TEST` macros are insufficient.
+The macros should be preferred when possible, as they avoid most of the
+complexity of calling this function.
+
+It provides the following signature:
+
+```c++
+template <typename Factory>
+TestInfo* RegisterTest(const char* test_suite_name, const char* test_name,
+                       const char* type_param, const char* value_param,
+                       const char* file, int line, Factory factory);
+```
+
+The `factory` argument is a factory callable (move-constructible) object or
+function pointer that creates a new instance of the Test object. It handles
+ownership to the caller. The signature of the callable is `Fixture*()`, where
+`Fixture` is the test fixture class for the test. All tests registered with the
+same `test_suite_name` must return the same fixture type. This is checked at
+runtime.
+
+The framework will infer the fixture class from the factory and will call the
+`SetUpTestSuite` and `TearDownTestSuite` for it.
+
+Must be called before `RUN_ALL_TESTS()` is invoked, otherwise behavior is
+undefined.
+
+Use case example:
+
+```c++
+class MyFixture : public ::testing::Test {
+ public:
+  // All of these optional, just like in regular macro usage.
+  static void SetUpTestSuite() { ... }
+  static void TearDownTestSuite() { ... }
+  void SetUp() override { ... }
+  void TearDown() override { ... }
+};
+
+class MyTest : public MyFixture {
+ public:
+  explicit MyTest(int data) : data_(data) {}
+  void TestBody() override { ... }
+
+ private:
+  int data_;
+};
+
+void RegisterMyTests(const std::vector<int>& values) {
+  for (int v : values) {
+    ::testing::RegisterTest(
+        "MyFixture", ("Test" + std::to_string(v)).c_str(), nullptr,
+        std::to_string(v).c_str(),
+        __FILE__, __LINE__,
+        // Important to use the fixture type as the return type here.
+        [=]() -> MyFixture* { return new MyTest(v); });
+  }
+}
+...
+int main(int argc, char** argv) {
+  std::vector<int> values_to_test = LoadValuesFromConfig();
+  RegisterMyTests(values_to_test);
+  ...
+  return RUN_ALL_TESTS();
+}
+```
+## Getting the Current Test's Name
+
+Sometimes a function may need to know the name of the currently running test.
+For example, you may be using the `SetUp()` method of your test fixture to set
+the golden file name based on which test is running. The `::testing::TestInfo`
+class has this information:
+
+```c++
+namespace testing {
+
+class TestInfo {
+ public:
+  // Returns the test suite name and the test name, respectively.
+  //
+  // Do NOT delete or free the return value - it's managed by the
+  // TestInfo class.
+  const char* test_suite_name() const;
+  const char* name() const;
+};
+
+}
+```
+
+To obtain a `TestInfo` object for the currently running test, call
+`current_test_info()` on the `UnitTest` singleton object:
+
+```c++
+  // Gets information about the currently running test.
+  // Do NOT delete the returned object - it's managed by the UnitTest class.
+  const ::testing::TestInfo* const test_info =
+    ::testing::UnitTest::GetInstance()->current_test_info();
+
+
+
+  printf("We are in test %s of test suite %s.\n",
+         test_info->name(),
+         test_info->test_suite_name());
+```
+
+`current_test_info()` returns a null pointer if no test is running. In
+particular, you cannot find the test suite name in `TestSuiteSetUp()`,
+`TestSuiteTearDown()` (where you know the test suite name implicitly), or
+functions called from them.
+
+## Extending googletest by Handling Test Events
+
+googletest provides an **event listener API** to let you receive notifications
+about the progress of a test program and test failures. The events you can
+listen to include the start and end of the test program, a test suite, or a test
+method, among others. You may use this API to augment or replace the standard
+console output, replace the XML output, or provide a completely different form
+of output, such as a GUI or a database. You can also use test events as
+checkpoints to implement a resource leak checker, for example.
+
+### Defining Event Listeners
+
+To define a event listener, you subclass either testing::TestEventListener or
+testing::EmptyTestEventListener The former is an (abstract) interface, where
+*each pure virtual method can be overridden to handle a test event* (For
+example, when a test starts, the `OnTestStart()` method will be called.). The
+latter provides an empty implementation of all methods in the interface, such
+that a subclass only needs to override the methods it cares about.
+
+When an event is fired, its context is passed to the handler function as an
+argument. The following argument types are used:
+
+*   UnitTest reflects the state of the entire test program,
+*   TestSuite has information about a test suite, which can contain one or more
+    tests,
+*   TestInfo contains the state of a test, and
+*   TestPartResult represents the result of a test assertion.
+
+An event handler function can examine the argument it receives to find out
+interesting information about the event and the test program's state.
+
+Here's an example:
+
+```c++
+  class MinimalistPrinter : public ::testing::EmptyTestEventListener {
+    // Called before a test starts.
+    virtual void OnTestStart(const ::testing::TestInfo& test_info) {
+      printf("*** Test %s.%s starting.\n",
+             test_info.test_suite_name(), test_info.name());
+    }
+
+    // Called after a failed assertion or a SUCCESS().
+    virtual void OnTestPartResult(const ::testing::TestPartResult& test_part_result) {
+      printf("%s in %s:%d\n%s\n",
+             test_part_result.failed() ? "*** Failure" : "Success",
+             test_part_result.file_name(),
+             test_part_result.line_number(),
+             test_part_result.summary());
+    }
+
+    // Called after a test ends.
+    virtual void OnTestEnd(const ::testing::TestInfo& test_info) {
+      printf("*** Test %s.%s ending.\n",
+             test_info.test_suite_name(), test_info.name());
+    }
+  };
+```
+
+### Using Event Listeners
+
+To use the event listener you have defined, add an instance of it to the
+googletest event listener list (represented by class TestEventListeners - note
+the "s" at the end of the name) in your `main()` function, before calling
+`RUN_ALL_TESTS()`:
+
+```c++
+int main(int argc, char** argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  // Gets hold of the event listener list.
+  ::testing::TestEventListeners& listeners =
+        ::testing::UnitTest::GetInstance()->listeners();
+  // Adds a listener to the end.  googletest takes the ownership.
+  listeners.Append(new MinimalistPrinter);
+  return RUN_ALL_TESTS();
+}
+```
+
+There's only one problem: the default test result printer is still in effect, so
+its output will mingle with the output from your minimalist printer. To suppress
+the default printer, just release it from the event listener list and delete it.
+You can do so by adding one line:
+
+```c++
+  ...
+  delete listeners.Release(listeners.default_result_printer());
+  listeners.Append(new MinimalistPrinter);
+  return RUN_ALL_TESTS();
+```
+
+Now, sit back and enjoy a completely different output from your tests. For more
+details, see [sample9_unittest.cc].
+
+[sample9_unittest.cc]: ../samples/sample9_unittest.cc "Event listener example"
+
+You may append more than one listener to the list. When an `On*Start()` or
+`OnTestPartResult()` event is fired, the listeners will receive it in the order
+they appear in the list (since new listeners are added to the end of the list,
+the default text printer and the default XML generator will receive the event
+first). An `On*End()` event will be received by the listeners in the *reverse*
+order. This allows output by listeners added later to be framed by output from
+listeners added earlier.
+
+### Generating Failures in Listeners
+
+You may use failure-raising macros (`EXPECT_*()`, `ASSERT_*()`, `FAIL()`, etc)
+when processing an event. There are some restrictions:
+
+1.  You cannot generate any failure in `OnTestPartResult()` (otherwise it will
+    cause `OnTestPartResult()` to be called recursively).
+2.  A listener that handles `OnTestPartResult()` is not allowed to generate any
+    failure.
+
+When you add listeners to the listener list, you should put listeners that
+handle `OnTestPartResult()` *before* listeners that can generate failures. This
+ensures that failures generated by the latter are attributed to the right test
+by the former.
+
+See [sample10_unittest.cc] for an example of a failure-raising listener.
+
+[sample10_unittest.cc]: ../samples/sample10_unittest.cc "Failure-raising listener example"
+
+## Running Test Programs: Advanced Options
+
+googletest test programs are ordinary executables. Once built, you can run them
+directly and affect their behavior via the following environment variables
+and/or command line flags. For the flags to work, your programs must call
+`::testing::InitGoogleTest()` before calling `RUN_ALL_TESTS()`.
+
+To see a list of supported flags and their usage, please run your test program
+with the `--help` flag. You can also use `-h`, `-?`, or `/?` for short.
+
+If an option is specified both by an environment variable and by a flag, the
+latter takes precedence.
+
+### Selecting Tests
+
+#### Listing Test Names
+
+Sometimes it is necessary to list the available tests in a program before
+running them so that a filter may be applied if needed. Including the flag
+`--gtest_list_tests` overrides all other flags and lists tests in the following
+format:
+
+```none
+TestSuite1.
+  TestName1
+  TestName2
+TestSuite2.
+  TestName
+```
+
+None of the tests listed are actually run if the flag is provided. There is no
+corresponding environment variable for this flag.
+
+#### Running a Subset of the Tests
+
+By default, a googletest program runs all tests the user has defined. Sometimes,
+you want to run only a subset of the tests (e.g. for debugging or quickly
+verifying a change). If you set the `GTEST_FILTER` environment variable or the
+`--gtest_filter` flag to a filter string, googletest will only run the tests
+whose full names (in the form of `TestSuiteName.TestName`) match the filter.
+
+The format of a filter is a '`:`'-separated list of wildcard patterns (called
+the *positive patterns*) optionally followed by a '`-`' and another
+'`:`'-separated pattern list (called the *negative patterns*). A test matches
+the filter if and only if it matches any of the positive patterns but does not
+match any of the negative patterns.
+
+A pattern may contain `'*'` (matches any string) or `'?'` (matches any single
+character). For convenience, the filter `'*-NegativePatterns'` can be also
+written as `'-NegativePatterns'`.
+
+For example:
+
+*   `./foo_test` Has no flag, and thus runs all its tests.
+*   `./foo_test --gtest_filter=*` Also runs everything, due to the single
+    match-everything `*` value.
+*   `./foo_test --gtest_filter=FooTest.*` Runs everything in test suite
+    `FooTest` .
+*   `./foo_test --gtest_filter=*Null*:*Constructor*` Runs any test whose full
+    name contains either `"Null"` or `"Constructor"` .
+*   `./foo_test --gtest_filter=-*DeathTest.*` Runs all non-death tests.
+*   `./foo_test --gtest_filter=FooTest.*-FooTest.Bar` Runs everything in test
+    suite `FooTest` except `FooTest.Bar`.
+*   `./foo_test --gtest_filter=FooTest.*:BarTest.*-FooTest.Bar:BarTest.Foo` Runs
+    everything in test suite `FooTest` except `FooTest.Bar` and everything in
+    test suite `BarTest` except `BarTest.Foo`.
+
+#### Temporarily Disabling Tests
+
+If you have a broken test that you cannot fix right away, you can add the
+`DISABLED_` prefix to its name. This will exclude it from execution. This is
+better than commenting out the code or using `#if 0`, as disabled tests are
+still compiled (and thus won't rot).
+
+If you need to disable all tests in a test suite, you can either add `DISABLED_`
+to the front of the name of each test, or alternatively add it to the front of
+the test suite name.
+
+For example, the following tests won't be run by googletest, even though they
+will still be compiled:
+
+```c++
+// Tests that Foo does Abc.
+TEST(FooTest, DISABLED_DoesAbc) { ... }
+
+class DISABLED_BarTest : public ::testing::Test { ... };
+
+// Tests that Bar does Xyz.
+TEST_F(DISABLED_BarTest, DoesXyz) { ... }
+```
+
+NOTE: This feature should only be used for temporary pain-relief. You still have
+to fix the disabled tests at a later date. As a reminder, googletest will print
+a banner warning you if a test program contains any disabled tests.
+
+TIP: You can easily count the number of disabled tests you have using `gsearch`
+and/or `grep`. This number can be used as a metric for improving your test
+quality.
+
+#### Temporarily Enabling Disabled Tests
+
+To include disabled tests in test execution, just invoke the test program with
+the `--gtest_also_run_disabled_tests` flag or set the
+`GTEST_ALSO_RUN_DISABLED_TESTS` environment variable to a value other than `0`.
+You can combine this with the `--gtest_filter` flag to further select which
+disabled tests to run.
+
+### Repeating the Tests
+
+Once in a while you'll run into a test whose result is hit-or-miss. Perhaps it
+will fail only 1% of the time, making it rather hard to reproduce the bug under
+a debugger. This can be a major source of frustration.
+
+The `--gtest_repeat` flag allows you to repeat all (or selected) test methods in
+a program many times. Hopefully, a flaky test will eventually fail and give you
+a chance to debug. Here's how to use it:
+
+```none
+$ foo_test --gtest_repeat=1000
+Repeat foo_test 1000 times and don't stop at failures.
+
+$ foo_test --gtest_repeat=-1
+A negative count means repeating forever.
+
+$ foo_test --gtest_repeat=1000 --gtest_break_on_failure
+Repeat foo_test 1000 times, stopping at the first failure.  This
+is especially useful when running under a debugger: when the test
+fails, it will drop into the debugger and you can then inspect
+variables and stacks.
+
+$ foo_test --gtest_repeat=1000 --gtest_filter=FooBar.*
+Repeat the tests whose name matches the filter 1000 times.
+```
+
+If your test program contains
+[global set-up/tear-down](#global-set-up-and-tear-down) code, it will be
+repeated in each iteration as well, as the flakiness may be in it. You can also
+specify the repeat count by setting the `GTEST_REPEAT` environment variable.
+
+### Shuffling the Tests
+
+You can specify the `--gtest_shuffle` flag (or set the `GTEST_SHUFFLE`
+environment variable to `1`) to run the tests in a program in a random order.
+This helps to reveal bad dependencies between tests.
+
+By default, googletest uses a random seed calculated from the current time.
+Therefore you'll get a different order every time. The console output includes
+the random seed value, such that you can reproduce an order-related test failure
+later. To specify the random seed explicitly, use the `--gtest_random_seed=SEED`
+flag (or set the `GTEST_RANDOM_SEED` environment variable), where `SEED` is an
+integer in the range [0, 99999]. The seed value 0 is special: it tells
+googletest to do the default behavior of calculating the seed from the current
+time.
+
+If you combine this with `--gtest_repeat=N`, googletest will pick a different
+random seed and re-shuffle the tests in each iteration.
+
+### Controlling Test Output
+
+#### Colored Terminal Output
+
+googletest can use colors in its terminal output to make it easier to spot the
+important information:
+
+<code>
+...<br/>
+  <font color="green">[----------]</font><font color="black"> 1 test from
+  FooTest</font><br/>
+  <font color="green">[ RUN &nbsp; &nbsp; &nbsp;]</font><font color="black">
+  FooTest.DoesAbc</font><br/>
+  <font color="green">[ &nbsp; &nbsp; &nbsp; OK ]</font><font color="black">
+  FooTest.DoesAbc </font><br/>
+  <font color="green">[----------]</font><font color="black">
+  2 tests from BarTest</font><br/>
+  <font color="green">[ RUN &nbsp; &nbsp; &nbsp;]</font><font color="black">
+  BarTest.HasXyzProperty </font><br/>
+  <font color="green">[ &nbsp; &nbsp; &nbsp; OK ]</font><font color="black">
+  BarTest.HasXyzProperty</font><br/>
+  <font color="green">[ RUN &nbsp; &nbsp; &nbsp;]</font><font color="black">
+  BarTest.ReturnsTrueOnSuccess ... some error messages ...</font><br/>
+  <font color="red">[ &nbsp; FAILED ]</font><font color="black">
+  BarTest.ReturnsTrueOnSuccess ...</font><br/>
+  <font color="green">[==========]</font><font color="black">
+  30 tests from 14 test suites ran.</font><br/>
+  <font color="green">[ &nbsp; PASSED ]</font><font color="black">
+  28 tests.</font><br/>
+  <font color="red">[ &nbsp; FAILED ]</font><font color="black">
+  2 tests, listed below:</font><br/>
+  <font color="red">[ &nbsp; FAILED ]</font><font color="black">
+  BarTest.ReturnsTrueOnSuccess</font><br/>
+  <font color="red">[ &nbsp; FAILED ]</font><font color="black">
+  AnotherTest.DoesXyz<br/>
+<br/>
+  2 FAILED TESTS
+  </font>
+</code>
+
+You can set the `GTEST_COLOR` environment variable or the `--gtest_color`
+command line flag to `yes`, `no`, or `auto` (the default) to enable colors,
+disable colors, or let googletest decide. When the value is `auto`, googletest
+will use colors if and only if the output goes to a terminal and (on non-Windows
+platforms) the `TERM` environment variable is set to `xterm` or `xterm-color`.
+
+#### Suppressing the Elapsed Time
+
+By default, googletest prints the time it takes to run each test. To disable
+that, run the test program with the `--gtest_print_time=0` command line flag, or
+set the GTEST_PRINT_TIME environment variable to `0`.
+
+#### Suppressing UTF-8 Text Output
+
+In case of assertion failures, googletest prints expected and actual values of
+type `string` both as hex-encoded strings as well as in readable UTF-8 text if
+they contain valid non-ASCII UTF-8 characters. If you want to suppress the UTF-8
+text because, for example, you don't have an UTF-8 compatible output medium, run
+the test program with `--gtest_print_utf8=0` or set the `GTEST_PRINT_UTF8`
+environment variable to `0`.
+
+
+
+#### Generating an XML Report
+
+googletest can emit a detailed XML report to a file in addition to its normal
+textual output. The report contains the duration of each test, and thus can help
+you identify slow tests. The report is also used by the http://unittest
+dashboard to show per-test-method error messages.
+
+To generate the XML report, set the `GTEST_OUTPUT` environment variable or the
+`--gtest_output` flag to the string `"xml:path_to_output_file"`, which will
+create the file at the given location. You can also just use the string `"xml"`,
+in which case the output can be found in the `test_detail.xml` file in the
+current directory.
+
+If you specify a directory (for example, `"xml:output/directory/"` on Linux or
+`"xml:output\directory\"` on Windows), googletest will create the XML file in
+that directory, named after the test executable (e.g. `foo_test.xml` for test
+program `foo_test` or `foo_test.exe`). If the file already exists (perhaps left
+over from a previous run), googletest will pick a different name (e.g.
+`foo_test_1.xml`) to avoid overwriting it.
+
+The report is based on the `junitreport` Ant task. Since that format was
+originally intended for Java, a little interpretation is required to make it
+apply to googletest tests, as shown here:
+
+```xml
+<testsuites name="AllTests" ...>
+  <testsuite name="test_case_name" ...>
+    <testcase    name="test_name" ...>
+      <failure message="..."/>
+      <failure message="..."/>
+      <failure message="..."/>
+    </testcase>
+  </testsuite>
+</testsuites>
+```
+
+*   The root `<testsuites>` element corresponds to the entire test program.
+*   `<testsuite>` elements correspond to googletest test suites.
+*   `<testcase>` elements correspond to googletest test functions.
+
+For instance, the following program
+
+```c++
+TEST(MathTest, Addition) { ... }
+TEST(MathTest, Subtraction) { ... }
+TEST(LogicTest, NonContradiction) { ... }
+```
+
+could generate this report:
+
+```xml
+<?xml version="1.0" encoding="UTF-8"?>
+<testsuites tests="3" failures="1" errors="0" time="0.035" timestamp="2011-10-31T18:52:42" name="AllTests">
+  <testsuite name="MathTest" tests="2" failures="1" errors="0" time="0.015">
+    <testcase name="Addition" status="run" time="0.007" classname="">
+      <failure message="Value of: add(1, 1)&#x0A;  Actual: 3&#x0A;Expected: 2" type="">...</failure>
+      <failure message="Value of: add(1, -1)&#x0A;  Actual: 1&#x0A;Expected: 0" type="">...</failure>
+    </testcase>
+    <testcase name="Subtraction" status="run" time="0.005" classname="">
+    </testcase>
+  </testsuite>
+  <testsuite name="LogicTest" tests="1" failures="0" errors="0" time="0.005">
+    <testcase name="NonContradiction" status="run" time="0.005" classname="">
+    </testcase>
+  </testsuite>
+</testsuites>
+```
+
+Things to note:
+
+*   The `tests` attribute of a `<testsuites>` or `<testsuite>` element tells how
+    many test functions the googletest program or test suite contains, while the
+    `failures` attribute tells how many of them failed.
+
+*   The `time` attribute expresses the duration of the test, test suite, or
+    entire test program in seconds.
+
+*   The `timestamp` attribute records the local date and time of the test
+    execution.
+
+*   Each `<failure>` element corresponds to a single failed googletest
+    assertion.
+
+#### Generating a JSON Report
+
+googletest can also emit a JSON report as an alternative format to XML. To
+generate the JSON report, set the `GTEST_OUTPUT` environment variable or the
+`--gtest_output` flag to the string `"json:path_to_output_file"`, which will
+create the file at the given location. You can also just use the string
+`"json"`, in which case the output can be found in the `test_detail.json` file
+in the current directory.
+
+The report format conforms to the following JSON Schema:
+
+```json
+{
+  "$schema": "http://json-schema.org/schema#",
+  "type": "object",
+  "definitions": {
+    "TestCase": {
+      "type": "object",
+      "properties": {
+        "name": { "type": "string" },
+        "tests": { "type": "integer" },
+        "failures": { "type": "integer" },
+        "disabled": { "type": "integer" },
+        "time": { "type": "string" },
+        "testsuite": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/TestInfo"
+          }
+        }
+      }
+    },
+    "TestInfo": {
+      "type": "object",
+      "properties": {
+        "name": { "type": "string" },
+        "status": {
+          "type": "string",
+          "enum": ["RUN", "NOTRUN"]
+        },
+        "time": { "type": "string" },
+        "classname": { "type": "string" },
+        "failures": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/Failure"
+          }
+        }
+      }
+    },
+    "Failure": {
+      "type": "object",
+      "properties": {
+        "failures": { "type": "string" },
+        "type": { "type": "string" }
+      }
+    }
+  },
+  "properties": {
+    "tests": { "type": "integer" },
+    "failures": { "type": "integer" },
+    "disabled": { "type": "integer" },
+    "errors": { "type": "integer" },
+    "timestamp": {
+      "type": "string",
+      "format": "date-time"
+    },
+    "time": { "type": "string" },
+    "name": { "type": "string" },
+    "testsuites": {
+      "type": "array",
+      "items": {
+        "$ref": "#/definitions/TestCase"
+      }
+    }
+  }
+}
+```
+
+The report uses the format that conforms to the following Proto3 using the
+[JSON encoding](https://developers.google.com/protocol-buffers/docs/proto3#json):
+
+```proto
+syntax = "proto3";
+
+package googletest;
+
+import "google/protobuf/timestamp.proto";
+import "google/protobuf/duration.proto";
+
+message UnitTest {
+  int32 tests = 1;
+  int32 failures = 2;
+  int32 disabled = 3;
+  int32 errors = 4;
+  google.protobuf.Timestamp timestamp = 5;
+  google.protobuf.Duration time = 6;
+  string name = 7;
+  repeated TestCase testsuites = 8;
+}
+
+message TestCase {
+  string name = 1;
+  int32 tests = 2;
+  int32 failures = 3;
+  int32 disabled = 4;
+  int32 errors = 5;
+  google.protobuf.Duration time = 6;
+  repeated TestInfo testsuite = 7;
+}
+
+message TestInfo {
+  string name = 1;
+  enum Status {
+    RUN = 0;
+    NOTRUN = 1;
+  }
+  Status status = 2;
+  google.protobuf.Duration time = 3;
+  string classname = 4;
+  message Failure {
+    string failures = 1;
+    string type = 2;
+  }
+  repeated Failure failures = 5;
+}
+```
+
+For instance, the following program
+
+```c++
+TEST(MathTest, Addition) { ... }
+TEST(MathTest, Subtraction) { ... }
+TEST(LogicTest, NonContradiction) { ... }
+```
+
+could generate this report:
+
+```json
+{
+  "tests": 3,
+  "failures": 1,
+  "errors": 0,
+  "time": "0.035s",
+  "timestamp": "2011-10-31T18:52:42Z",
+  "name": "AllTests",
+  "testsuites": [
+    {
+      "name": "MathTest",
+      "tests": 2,
+      "failures": 1,
+      "errors": 0,
+      "time": "0.015s",
+      "testsuite": [
+        {
+          "name": "Addition",
+          "status": "RUN",
+          "time": "0.007s",
+          "classname": "",
+          "failures": [
+            {
+              "message": "Value of: add(1, 1)\n  Actual: 3\nExpected: 2",
+              "type": ""
+            },
+            {
+              "message": "Value of: add(1, -1)\n  Actual: 1\nExpected: 0",
+              "type": ""
+            }
+          ]
+        },
+        {
+          "name": "Subtraction",
+          "status": "RUN",
+          "time": "0.005s",
+          "classname": ""
+        }
+      ]
+    },
+    {
+      "name": "LogicTest",
+      "tests": 1,
+      "failures": 0,
+      "errors": 0,
+      "time": "0.005s",
+      "testsuite": [
+        {
+          "name": "NonContradiction",
+          "status": "RUN",
+          "time": "0.005s",
+          "classname": ""
+        }
+      ]
+    }
+  ]
+}
+```
+
+IMPORTANT: The exact format of the JSON document is subject to change.
+
+### Controlling How Failures Are Reported
+
+#### Turning Assertion Failures into Break-Points
+
+When running test programs under a debugger, it's very convenient if the
+debugger can catch an assertion failure and automatically drop into interactive
+mode. googletest's *break-on-failure* mode supports this behavior.
+
+To enable it, set the `GTEST_BREAK_ON_FAILURE` environment variable to a value
+other than `0`. Alternatively, you can use the `--gtest_break_on_failure`
+command line flag.
+
+#### Disabling Catching Test-Thrown Exceptions
+
+googletest can be used either with or without exceptions enabled. If a test
+throws a C++ exception or (on Windows) a structured exception (SEH), by default
+googletest catches it, reports it as a test failure, and continues with the next
+test method. This maximizes the coverage of a test run. Also, on Windows an
+uncaught exception will cause a pop-up window, so catching the exceptions allows
+you to run the tests automatically.
+
+When debugging the test failures, however, you may instead want the exceptions
+to be handled by the debugger, such that you can examine the call stack when an
+exception is thrown. To achieve that, set the `GTEST_CATCH_EXCEPTIONS`
+environment variable to `0`, or use the `--gtest_catch_exceptions=0` flag when
+running the tests.
diff --git a/build/_deps/googletest-src/googletest/docs/faq.md b/build/_deps/googletest-src/googletest/docs/faq.md
new file mode 100644
index 0000000000000000000000000000000000000000..960a827989c9993a2f65758b0bc1bf73e31592c9
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/docs/faq.md
@@ -0,0 +1,753 @@
+# Googletest FAQ
+
+<!-- GOOGLETEST_CM0014 DO NOT DELETE -->
+
+## Why should test suite names and test names not contain underscore?
+
+Underscore (`_`) is special, as C++ reserves the following to be used by the
+compiler and the standard library:
+
+1.  any identifier that starts with an `_` followed by an upper-case letter, and
+2.  any identifier that contains two consecutive underscores (i.e. `__`)
+    *anywhere* in its name.
+
+User code is *prohibited* from using such identifiers.
+
+Now let's look at what this means for `TEST` and `TEST_F`.
+
+Currently `TEST(TestSuiteName, TestName)` generates a class named
+`TestSuiteName_TestName_Test`. What happens if `TestSuiteName` or `TestName`
+contains `_`?
+
+1.  If `TestSuiteName` starts with an `_` followed by an upper-case letter (say,
+    `_Foo`), we end up with `_Foo_TestName_Test`, which is reserved and thus
+    invalid.
+2.  If `TestSuiteName` ends with an `_` (say, `Foo_`), we get
+    `Foo__TestName_Test`, which is invalid.
+3.  If `TestName` starts with an `_` (say, `_Bar`), we get
+    `TestSuiteName__Bar_Test`, which is invalid.
+4.  If `TestName` ends with an `_` (say, `Bar_`), we get
+    `TestSuiteName_Bar__Test`, which is invalid.
+
+So clearly `TestSuiteName` and `TestName` cannot start or end with `_`
+(Actually, `TestSuiteName` can start with `_` -- as long as the `_` isn't
+followed by an upper-case letter. But that's getting complicated. So for
+simplicity we just say that it cannot start with `_`.).
+
+It may seem fine for `TestSuiteName` and `TestName` to contain `_` in the
+middle. However, consider this:
+
+```c++
+TEST(Time, Flies_Like_An_Arrow) { ... }
+TEST(Time_Flies, Like_An_Arrow) { ... }
+```
+
+Now, the two `TEST`s will both generate the same class
+(`Time_Flies_Like_An_Arrow_Test`). That's not good.
+
+So for simplicity, we just ask the users to avoid `_` in `TestSuiteName` and
+`TestName`. The rule is more constraining than necessary, but it's simple and
+easy to remember. It also gives googletest some wiggle room in case its
+implementation needs to change in the future.
+
+If you violate the rule, there may not be immediate consequences, but your test
+may (just may) break with a new compiler (or a new version of the compiler you
+are using) or with a new version of googletest. Therefore it's best to follow
+the rule.
+
+## Why does googletest support `EXPECT_EQ(NULL, ptr)` and `ASSERT_EQ(NULL, ptr)` but not `EXPECT_NE(NULL, ptr)` and `ASSERT_NE(NULL, ptr)`?
+
+First of all you can use `EXPECT_NE(nullptr, ptr)` and `ASSERT_NE(nullptr,
+ptr)`. This is the preferred syntax in the style guide because nullptr does not
+have the type problems that NULL does. Which is why NULL does not work.
+
+Due to some peculiarity of C++, it requires some non-trivial template meta
+programming tricks to support using `NULL` as an argument of the `EXPECT_XX()`
+and `ASSERT_XX()` macros. Therefore we only do it where it's most needed
+(otherwise we make the implementation of googletest harder to maintain and more
+error-prone than necessary).
+
+The `EXPECT_EQ()` macro takes the *expected* value as its first argument and the
+*actual* value as the second. It's reasonable that someone wants to write
+`EXPECT_EQ(NULL, some_expression)`, and this indeed was requested several times.
+Therefore we implemented it.
+
+The need for `EXPECT_NE(NULL, ptr)` isn't nearly as strong. When the assertion
+fails, you already know that `ptr` must be `NULL`, so it doesn't add any
+information to print `ptr` in this case. That means `EXPECT_TRUE(ptr != NULL)`
+works just as well.
+
+If we were to support `EXPECT_NE(NULL, ptr)`, for consistency we'll have to
+support `EXPECT_NE(ptr, NULL)` as well, as unlike `EXPECT_EQ`, we don't have a
+convention on the order of the two arguments for `EXPECT_NE`. This means using
+the template meta programming tricks twice in the implementation, making it even
+harder to understand and maintain. We believe the benefit doesn't justify the
+cost.
+
+Finally, with the growth of the gMock matcher library, we are encouraging people
+to use the unified `EXPECT_THAT(value, matcher)` syntax more often in tests. One
+significant advantage of the matcher approach is that matchers can be easily
+combined to form new matchers, while the `EXPECT_NE`, etc, macros cannot be
+easily combined. Therefore we want to invest more in the matchers than in the
+`EXPECT_XX()` macros.
+
+## I need to test that different implementations of an interface satisfy some common requirements. Should I use typed tests or value-parameterized tests?
+
+For testing various implementations of the same interface, either typed tests or
+value-parameterized tests can get it done. It's really up to you the user to
+decide which is more convenient for you, depending on your particular case. Some
+rough guidelines:
+
+*   Typed tests can be easier to write if instances of the different
+    implementations can be created the same way, modulo the type. For example,
+    if all these implementations have a public default constructor (such that
+    you can write `new TypeParam`), or if their factory functions have the same
+    form (e.g. `CreateInstance<TypeParam>()`).
+*   Value-parameterized tests can be easier to write if you need different code
+    patterns to create different implementations' instances, e.g. `new Foo` vs
+    `new Bar(5)`. To accommodate for the differences, you can write factory
+    function wrappers and pass these function pointers to the tests as their
+    parameters.
+*   When a typed test fails, the default output includes the name of the type,
+    which can help you quickly identify which implementation is wrong.
+    Value-parameterized tests only show the number of the failed iteration by
+    default. You will need to define a function that returns the iteration name
+    and pass it as the third parameter to INSTANTIATE_TEST_SUITE_P to have more
+    useful output.
+*   When using typed tests, you need to make sure you are testing against the
+    interface type, not the concrete types (in other words, you want to make
+    sure `implicit_cast<MyInterface*>(my_concrete_impl)` works, not just that
+    `my_concrete_impl` works). It's less likely to make mistakes in this area
+    when using value-parameterized tests.
+
+I hope I didn't confuse you more. :-) If you don't mind, I'd suggest you to give
+both approaches a try. Practice is a much better way to grasp the subtle
+differences between the two tools. Once you have some concrete experience, you
+can much more easily decide which one to use the next time.
+
+## I got some run-time errors about invalid proto descriptors when using `ProtocolMessageEquals`. Help!
+
+**Note:** `ProtocolMessageEquals` and `ProtocolMessageEquiv` are *deprecated*
+now. Please use `EqualsProto`, etc instead.
+
+`ProtocolMessageEquals` and `ProtocolMessageEquiv` were redefined recently and
+are now less tolerant of invalid protocol buffer definitions. In particular, if
+you have a `foo.proto` that doesn't fully qualify the type of a protocol message
+it references (e.g. `message<Bar>` where it should be `message<blah.Bar>`), you
+will now get run-time errors like:
+
+```
+... descriptor.cc:...] Invalid proto descriptor for file "path/to/foo.proto":
+... descriptor.cc:...]  blah.MyMessage.my_field: ".Bar" is not defined.
+```
+
+If you see this, your `.proto` file is broken and needs to be fixed by making
+the types fully qualified. The new definition of `ProtocolMessageEquals` and
+`ProtocolMessageEquiv` just happen to reveal your bug.
+
+## My death test modifies some state, but the change seems lost after the death test finishes. Why?
+
+Death tests (`EXPECT_DEATH`, etc) are executed in a sub-process s.t. the
+expected crash won't kill the test program (i.e. the parent process). As a
+result, any in-memory side effects they incur are observable in their respective
+sub-processes, but not in the parent process. You can think of them as running
+in a parallel universe, more or less.
+
+In particular, if you use mocking and the death test statement invokes some mock
+methods, the parent process will think the calls have never occurred. Therefore,
+you may want to move your `EXPECT_CALL` statements inside the `EXPECT_DEATH`
+macro.
+
+## EXPECT_EQ(htonl(blah), blah_blah) generates weird compiler errors in opt mode. Is this a googletest bug?
+
+Actually, the bug is in `htonl()`.
+
+According to `'man htonl'`, `htonl()` is a *function*, which means it's valid to
+use `htonl` as a function pointer. However, in opt mode `htonl()` is defined as
+a *macro*, which breaks this usage.
+
+Worse, the macro definition of `htonl()` uses a `gcc` extension and is *not*
+standard C++. That hacky implementation has some ad hoc limitations. In
+particular, it prevents you from writing `Foo<sizeof(htonl(x))>()`, where `Foo`
+is a template that has an integral argument.
+
+The implementation of `EXPECT_EQ(a, b)` uses `sizeof(... a ...)` inside a
+template argument, and thus doesn't compile in opt mode when `a` contains a call
+to `htonl()`. It is difficult to make `EXPECT_EQ` bypass the `htonl()` bug, as
+the solution must work with different compilers on various platforms.
+
+`htonl()` has some other problems as described in `//util/endian/endian.h`,
+which defines `ghtonl()` to replace it. `ghtonl()` does the same thing `htonl()`
+does, only without its problems. We suggest you to use `ghtonl()` instead of
+`htonl()`, both in your tests and production code.
+
+`//util/endian/endian.h` also defines `ghtons()`, which solves similar problems
+in `htons()`.
+
+Don't forget to add `//util/endian` to the list of dependencies in the `BUILD`
+file wherever `ghtonl()` and `ghtons()` are used. The library consists of a
+single header file and will not bloat your binary.
+
+## The compiler complains about "undefined references" to some static const member variables, but I did define them in the class body. What's wrong?
+
+If your class has a static data member:
+
+```c++
+// foo.h
+class Foo {
+  ...
+  static const int kBar = 100;
+};
+```
+
+You also need to define it *outside* of the class body in `foo.cc`:
+
+```c++
+const int Foo::kBar;  // No initializer here.
+```
+
+Otherwise your code is **invalid C++**, and may break in unexpected ways. In
+particular, using it in googletest comparison assertions (`EXPECT_EQ`, etc) will
+generate an "undefined reference" linker error. The fact that "it used to work"
+doesn't mean it's valid. It just means that you were lucky. :-)
+
+## Can I derive a test fixture from another?
+
+Yes.
+
+Each test fixture has a corresponding and same named test suite. This means only
+one test suite can use a particular fixture. Sometimes, however, multiple test
+cases may want to use the same or slightly different fixtures. For example, you
+may want to make sure that all of a GUI library's test suites don't leak
+important system resources like fonts and brushes.
+
+In googletest, you share a fixture among test suites by putting the shared logic
+in a base test fixture, then deriving from that base a separate fixture for each
+test suite that wants to use this common logic. You then use `TEST_F()` to write
+tests using each derived fixture.
+
+Typically, your code looks like this:
+
+```c++
+// Defines a base test fixture.
+class BaseTest : public ::testing::Test {
+ protected:
+  ...
+};
+
+// Derives a fixture FooTest from BaseTest.
+class FooTest : public BaseTest {
+ protected:
+  void SetUp() override {
+    BaseTest::SetUp();  // Sets up the base fixture first.
+    ... additional set-up work ...
+  }
+
+  void TearDown() override {
+    ... clean-up work for FooTest ...
+    BaseTest::TearDown();  // Remember to tear down the base fixture
+                           // after cleaning up FooTest!
+  }
+
+  ... functions and variables for FooTest ...
+};
+
+// Tests that use the fixture FooTest.
+TEST_F(FooTest, Bar) { ... }
+TEST_F(FooTest, Baz) { ... }
+
+... additional fixtures derived from BaseTest ...
+```
+
+If necessary, you can continue to derive test fixtures from a derived fixture.
+googletest has no limit on how deep the hierarchy can be.
+
+For a complete example using derived test fixtures, see
+[sample5_unittest.cc](../samples/sample5_unittest.cc).
+
+## My compiler complains "void value not ignored as it ought to be." What does this mean?
+
+You're probably using an `ASSERT_*()` in a function that doesn't return `void`.
+`ASSERT_*()` can only be used in `void` functions, due to exceptions being
+disabled by our build system. Please see more details
+[here](advanced.md#assertion-placement).
+
+## My death test hangs (or seg-faults). How do I fix it?
+
+In googletest, death tests are run in a child process and the way they work is
+delicate. To write death tests you really need to understand how they work.
+Please make sure you have read [this](advanced.md#how-it-works).
+
+In particular, death tests don't like having multiple threads in the parent
+process. So the first thing you can try is to eliminate creating threads outside
+of `EXPECT_DEATH()`. For example, you may want to use mocks or fake objects
+instead of real ones in your tests.
+
+Sometimes this is impossible as some library you must use may be creating
+threads before `main()` is even reached. In this case, you can try to minimize
+the chance of conflicts by either moving as many activities as possible inside
+`EXPECT_DEATH()` (in the extreme case, you want to move everything inside), or
+leaving as few things as possible in it. Also, you can try to set the death test
+style to `"threadsafe"`, which is safer but slower, and see if it helps.
+
+If you go with thread-safe death tests, remember that they rerun the test
+program from the beginning in the child process. Therefore make sure your
+program can run side-by-side with itself and is deterministic.
+
+In the end, this boils down to good concurrent programming. You have to make
+sure that there is no race conditions or dead locks in your program. No silver
+bullet - sorry!
+
+## Should I use the constructor/destructor of the test fixture or SetUp()/TearDown()? {#CtorVsSetUp}
+
+The first thing to remember is that googletest does **not** reuse the same test
+fixture object across multiple tests. For each `TEST_F`, googletest will create
+a **fresh** test fixture object, immediately call `SetUp()`, run the test body,
+call `TearDown()`, and then delete the test fixture object.
+
+When you need to write per-test set-up and tear-down logic, you have the choice
+between using the test fixture constructor/destructor or `SetUp()/TearDown()`.
+The former is usually preferred, as it has the following benefits:
+
+*   By initializing a member variable in the constructor, we have the option to
+    make it `const`, which helps prevent accidental changes to its value and
+    makes the tests more obviously correct.
+*   In case we need to subclass the test fixture class, the subclass'
+    constructor is guaranteed to call the base class' constructor *first*, and
+    the subclass' destructor is guaranteed to call the base class' destructor
+    *afterward*. With `SetUp()/TearDown()`, a subclass may make the mistake of
+    forgetting to call the base class' `SetUp()/TearDown()` or call them at the
+    wrong time.
+
+You may still want to use `SetUp()/TearDown()` in the following cases:
+
+*   C++ does not allow virtual function calls in constructors and destructors.
+    You can call a method declared as virtual, but it will not use dynamic
+    dispatch, it will use the definition from the class the constructor of which
+    is currently executing. This is because calling a virtual method before the
+    derived class constructor has a chance to run is very dangerous - the
+    virtual method might operate on uninitialized data. Therefore, if you need
+    to call a method that will be overridden in a derived class, you have to use
+    `SetUp()/TearDown()`.
+*   In the body of a constructor (or destructor), it's not possible to use the
+    `ASSERT_xx` macros. Therefore, if the set-up operation could cause a fatal
+    test failure that should prevent the test from running, it's necessary to
+    use `abort` <!-- GOOGLETEST_CM0015 DO NOT DELETE --> and abort the whole test executable,
+    or to use `SetUp()` instead of a constructor.
+*   If the tear-down operation could throw an exception, you must use
+    `TearDown()` as opposed to the destructor, as throwing in a destructor leads
+    to undefined behavior and usually will kill your program right away. Note
+    that many standard libraries (like STL) may throw when exceptions are
+    enabled in the compiler. Therefore you should prefer `TearDown()` if you
+    want to write portable tests that work with or without exceptions.
+*   The googletest team is considering making the assertion macros throw on
+    platforms where exceptions are enabled (e.g. Windows, Mac OS, and Linux
+    client-side), which will eliminate the need for the user to propagate
+    failures from a subroutine to its caller. Therefore, you shouldn't use
+    googletest assertions in a destructor if your code could run on such a
+    platform.
+
+## The compiler complains "no matching function to call" when I use ASSERT_PRED*. How do I fix it?
+
+If the predicate function you use in `ASSERT_PRED*` or `EXPECT_PRED*` is
+overloaded or a template, the compiler will have trouble figuring out which
+overloaded version it should use. `ASSERT_PRED_FORMAT*` and
+`EXPECT_PRED_FORMAT*` don't have this problem.
+
+If you see this error, you might want to switch to
+`(ASSERT|EXPECT)_PRED_FORMAT*`, which will also give you a better failure
+message. If, however, that is not an option, you can resolve the problem by
+explicitly telling the compiler which version to pick.
+
+For example, suppose you have
+
+```c++
+bool IsPositive(int n) {
+  return n > 0;
+}
+
+bool IsPositive(double x) {
+  return x > 0;
+}
+```
+
+you will get a compiler error if you write
+
+```c++
+EXPECT_PRED1(IsPositive, 5);
+```
+
+However, this will work:
+
+```c++
+EXPECT_PRED1(static_cast<bool (*)(int)>(IsPositive), 5);
+```
+
+(The stuff inside the angled brackets for the `static_cast` operator is the type
+of the function pointer for the `int`-version of `IsPositive()`.)
+
+As another example, when you have a template function
+
+```c++
+template <typename T>
+bool IsNegative(T x) {
+  return x < 0;
+}
+```
+
+you can use it in a predicate assertion like this:
+
+```c++
+ASSERT_PRED1(IsNegative<int>, -5);
+```
+
+Things are more interesting if your template has more than one parameters. The
+following won't compile:
+
+```c++
+ASSERT_PRED2(GreaterThan<int, int>, 5, 0);
+```
+
+as the C++ pre-processor thinks you are giving `ASSERT_PRED2` 4 arguments, which
+is one more than expected. The workaround is to wrap the predicate function in
+parentheses:
+
+```c++
+ASSERT_PRED2((GreaterThan<int, int>), 5, 0);
+```
+
+## My compiler complains about "ignoring return value" when I call RUN_ALL_TESTS(). Why?
+
+Some people had been ignoring the return value of `RUN_ALL_TESTS()`. That is,
+instead of
+
+```c++
+  return RUN_ALL_TESTS();
+```
+
+they write
+
+```c++
+  RUN_ALL_TESTS();
+```
+
+This is **wrong and dangerous**. The testing services needs to see the return
+value of `RUN_ALL_TESTS()` in order to determine if a test has passed. If your
+`main()` function ignores it, your test will be considered successful even if it
+has a googletest assertion failure. Very bad.
+
+We have decided to fix this (thanks to Michael Chastain for the idea). Now, your
+code will no longer be able to ignore `RUN_ALL_TESTS()` when compiled with
+`gcc`. If you do so, you'll get a compiler error.
+
+If you see the compiler complaining about you ignoring the return value of
+`RUN_ALL_TESTS()`, the fix is simple: just make sure its value is used as the
+return value of `main()`.
+
+But how could we introduce a change that breaks existing tests? Well, in this
+case, the code was already broken in the first place, so we didn't break it. :-)
+
+## My compiler complains that a constructor (or destructor) cannot return a value. What's going on?
+
+Due to a peculiarity of C++, in order to support the syntax for streaming
+messages to an `ASSERT_*`, e.g.
+
+```c++
+  ASSERT_EQ(1, Foo()) << "blah blah" << foo;
+```
+
+we had to give up using `ASSERT*` and `FAIL*` (but not `EXPECT*` and
+`ADD_FAILURE*`) in constructors and destructors. The workaround is to move the
+content of your constructor/destructor to a private void member function, or
+switch to `EXPECT_*()` if that works. This
+[section](advanced.md#assertion-placement) in the user's guide explains it.
+
+## My SetUp() function is not called. Why?
+
+C++ is case-sensitive. Did you spell it as `Setup()`?
+
+Similarly, sometimes people spell `SetUpTestSuite()` as `SetupTestSuite()` and
+wonder why it's never called.
+
+
+## I have several test suites which share the same test fixture logic, do I have to define a new test fixture class for each of them? This seems pretty tedious.
+
+You don't have to. Instead of
+
+```c++
+class FooTest : public BaseTest {};
+
+TEST_F(FooTest, Abc) { ... }
+TEST_F(FooTest, Def) { ... }
+
+class BarTest : public BaseTest {};
+
+TEST_F(BarTest, Abc) { ... }
+TEST_F(BarTest, Def) { ... }
+```
+
+you can simply `typedef` the test fixtures:
+
+```c++
+typedef BaseTest FooTest;
+
+TEST_F(FooTest, Abc) { ... }
+TEST_F(FooTest, Def) { ... }
+
+typedef BaseTest BarTest;
+
+TEST_F(BarTest, Abc) { ... }
+TEST_F(BarTest, Def) { ... }
+```
+
+## googletest output is buried in a whole bunch of LOG messages. What do I do?
+
+The googletest output is meant to be a concise and human-friendly report. If
+your test generates textual output itself, it will mix with the googletest
+output, making it hard to read. However, there is an easy solution to this
+problem.
+
+Since `LOG` messages go to stderr, we decided to let googletest output go to
+stdout. This way, you can easily separate the two using redirection. For
+example:
+
+```shell
+$ ./my_test > gtest_output.txt
+```
+
+## Why should I prefer test fixtures over global variables?
+
+There are several good reasons:
+
+1.  It's likely your test needs to change the states of its global variables.
+    This makes it difficult to keep side effects from escaping one test and
+    contaminating others, making debugging difficult. By using fixtures, each
+    test has a fresh set of variables that's different (but with the same
+    names). Thus, tests are kept independent of each other.
+2.  Global variables pollute the global namespace.
+3.  Test fixtures can be reused via subclassing, which cannot be done easily
+    with global variables. This is useful if many test suites have something in
+    common.
+
+## What can the statement argument in ASSERT_DEATH() be?
+
+`ASSERT_DEATH(*statement*, *regex*)` (or any death assertion macro) can be used
+wherever `*statement*` is valid. So basically `*statement*` can be any C++
+statement that makes sense in the current context. In particular, it can
+reference global and/or local variables, and can be:
+
+*   a simple function call (often the case),
+*   a complex expression, or
+*   a compound statement.
+
+Some examples are shown here:
+
+```c++
+// A death test can be a simple function call.
+TEST(MyDeathTest, FunctionCall) {
+  ASSERT_DEATH(Xyz(5), "Xyz failed");
+}
+
+// Or a complex expression that references variables and functions.
+TEST(MyDeathTest, ComplexExpression) {
+  const bool c = Condition();
+  ASSERT_DEATH((c ? Func1(0) : object2.Method("test")),
+               "(Func1|Method) failed");
+}
+
+// Death assertions can be used any where in a function.  In
+// particular, they can be inside a loop.
+TEST(MyDeathTest, InsideLoop) {
+  // Verifies that Foo(0), Foo(1), ..., and Foo(4) all die.
+  for (int i = 0; i < 5; i++) {
+    EXPECT_DEATH_M(Foo(i), "Foo has \\d+ errors",
+                   ::testing::Message() << "where i is " << i);
+  }
+}
+
+// A death assertion can contain a compound statement.
+TEST(MyDeathTest, CompoundStatement) {
+  // Verifies that at lease one of Bar(0), Bar(1), ..., and
+  // Bar(4) dies.
+  ASSERT_DEATH({
+    for (int i = 0; i < 5; i++) {
+      Bar(i);
+    }
+  },
+  "Bar has \\d+ errors");
+}
+```
+
+gtest-death-test_test.cc contains more examples if you are interested.
+
+## I have a fixture class `FooTest`, but `TEST_F(FooTest, Bar)` gives me error ``"no matching function for call to `FooTest::FooTest()'"``. Why?
+
+Googletest needs to be able to create objects of your test fixture class, so it
+must have a default constructor. Normally the compiler will define one for you.
+However, there are cases where you have to define your own:
+
+*   If you explicitly declare a non-default constructor for class `FooTest`
+    (`DISALLOW_EVIL_CONSTRUCTORS()` does this), then you need to define a
+    default constructor, even if it would be empty.
+*   If `FooTest` has a const non-static data member, then you have to define the
+    default constructor *and* initialize the const member in the initializer
+    list of the constructor. (Early versions of `gcc` doesn't force you to
+    initialize the const member. It's a bug that has been fixed in `gcc 4`.)
+
+## Why does ASSERT_DEATH complain about previous threads that were already joined?
+
+With the Linux pthread library, there is no turning back once you cross the line
+from single thread to multiple threads. The first time you create a thread, a
+manager thread is created in addition, so you get 3, not 2, threads. Later when
+the thread you create joins the main thread, the thread count decrements by 1,
+but the manager thread will never be killed, so you still have 2 threads, which
+means you cannot safely run a death test.
+
+The new NPTL thread library doesn't suffer from this problem, as it doesn't
+create a manager thread. However, if you don't control which machine your test
+runs on, you shouldn't depend on this.
+
+## Why does googletest require the entire test suite, instead of individual tests, to be named *DeathTest when it uses ASSERT_DEATH?
+
+googletest does not interleave tests from different test suites. That is, it
+runs all tests in one test suite first, and then runs all tests in the next test
+suite, and so on. googletest does this because it needs to set up a test suite
+before the first test in it is run, and tear it down afterwords. Splitting up
+the test case would require multiple set-up and tear-down processes, which is
+inefficient and makes the semantics unclean.
+
+If we were to determine the order of tests based on test name instead of test
+case name, then we would have a problem with the following situation:
+
+```c++
+TEST_F(FooTest, AbcDeathTest) { ... }
+TEST_F(FooTest, Uvw) { ... }
+
+TEST_F(BarTest, DefDeathTest) { ... }
+TEST_F(BarTest, Xyz) { ... }
+```
+
+Since `FooTest.AbcDeathTest` needs to run before `BarTest.Xyz`, and we don't
+interleave tests from different test suites, we need to run all tests in the
+`FooTest` case before running any test in the `BarTest` case. This contradicts
+with the requirement to run `BarTest.DefDeathTest` before `FooTest.Uvw`.
+
+## But I don't like calling my entire test suite \*DeathTest when it contains both death tests and non-death tests. What do I do?
+
+You don't have to, but if you like, you may split up the test suite into
+`FooTest` and `FooDeathTest`, where the names make it clear that they are
+related:
+
+```c++
+class FooTest : public ::testing::Test { ... };
+
+TEST_F(FooTest, Abc) { ... }
+TEST_F(FooTest, Def) { ... }
+
+using FooDeathTest = FooTest;
+
+TEST_F(FooDeathTest, Uvw) { ... EXPECT_DEATH(...) ... }
+TEST_F(FooDeathTest, Xyz) { ... ASSERT_DEATH(...) ... }
+```
+
+## googletest prints the LOG messages in a death test's child process only when the test fails. How can I see the LOG messages when the death test succeeds?
+
+Printing the LOG messages generated by the statement inside `EXPECT_DEATH()`
+makes it harder to search for real problems in the parent's log. Therefore,
+googletest only prints them when the death test has failed.
+
+If you really need to see such LOG messages, a workaround is to temporarily
+break the death test (e.g. by changing the regex pattern it is expected to
+match). Admittedly, this is a hack. We'll consider a more permanent solution
+after the fork-and-exec-style death tests are implemented.
+
+## The compiler complains about "no match for 'operator<<'" when I use an assertion. What gives?
+
+If you use a user-defined type `FooType` in an assertion, you must make sure
+there is an `std::ostream& operator<<(std::ostream&, const FooType&)` function
+defined such that we can print a value of `FooType`.
+
+In addition, if `FooType` is declared in a name space, the `<<` operator also
+needs to be defined in the *same* name space. See https://abseil.io/tips/49 for details.
+
+## How do I suppress the memory leak messages on Windows?
+
+Since the statically initialized googletest singleton requires allocations on
+the heap, the Visual C++ memory leak detector will report memory leaks at the
+end of the program run. The easiest way to avoid this is to use the
+`_CrtMemCheckpoint` and `_CrtMemDumpAllObjectsSince` calls to not report any
+statically initialized heap objects. See MSDN for more details and additional
+heap check/debug routines.
+
+## How can my code detect if it is running in a test?
+
+If you write code that sniffs whether it's running in a test and does different
+things accordingly, you are leaking test-only logic into production code and
+there is no easy way to ensure that the test-only code paths aren't run by
+mistake in production. Such cleverness also leads to
+[Heisenbugs](https://en.wikipedia.org/wiki/Heisenbug). Therefore we strongly
+advise against the practice, and googletest doesn't provide a way to do it.
+
+In general, the recommended way to cause the code to behave differently under
+test is [Dependency Injection](https://en.wikipedia.org/wiki/Dependency_injection). You can inject
+different functionality from the test and from the production code. Since your
+production code doesn't link in the for-test logic at all (the
+[`testonly`](https://docs.bazel.build/versions/master/be/common-definitions.html#common.testonly) attribute for BUILD targets helps to ensure
+that), there is no danger in accidentally running it.
+
+However, if you *really*, *really*, *really* have no choice, and if you follow
+the rule of ending your test program names with `_test`, you can use the
+*horrible* hack of sniffing your executable name (`argv[0]` in `main()`) to know
+whether the code is under test.
+
+## How do I temporarily disable a test?
+
+If you have a broken test that you cannot fix right away, you can add the
+DISABLED_ prefix to its name. This will exclude it from execution. This is
+better than commenting out the code or using #if 0, as disabled tests are still
+compiled (and thus won't rot).
+
+To include disabled tests in test execution, just invoke the test program with
+the --gtest_also_run_disabled_tests flag.
+
+## Is it OK if I have two separate `TEST(Foo, Bar)` test methods defined in different namespaces?
+
+Yes.
+
+The rule is **all test methods in the same test suite must use the same fixture
+class.** This means that the following is **allowed** because both tests use the
+same fixture class (`::testing::Test`).
+
+```c++
+namespace foo {
+TEST(CoolTest, DoSomething) {
+  SUCCEED();
+}
+}  // namespace foo
+
+namespace bar {
+TEST(CoolTest, DoSomething) {
+  SUCCEED();
+}
+}  // namespace bar
+```
+
+However, the following code is **not allowed** and will produce a runtime error
+from googletest because the test methods are using different test fixture
+classes with the same test suite name.
+
+```c++
+namespace foo {
+class CoolTest : public ::testing::Test {};  // Fixture foo::CoolTest
+TEST_F(CoolTest, DoSomething) {
+  SUCCEED();
+}
+}  // namespace foo
+
+namespace bar {
+class CoolTest : public ::testing::Test {};  // Fixture: bar::CoolTest
+TEST_F(CoolTest, DoSomething) {
+  SUCCEED();
+}
+}  // namespace bar
+```
diff --git a/build/_deps/googletest-src/googletest/docs/pkgconfig.md b/build/_deps/googletest-src/googletest/docs/pkgconfig.md
new file mode 100644
index 0000000000000000000000000000000000000000..6dc0673889c43d03fc66564b4f64510143688820
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/docs/pkgconfig.md
@@ -0,0 +1,141 @@
+## Using GoogleTest from various build systems
+
+GoogleTest comes with pkg-config files that can be used to determine all
+necessary flags for compiling and linking to GoogleTest (and GoogleMock).
+Pkg-config is a standardised plain-text format containing
+
+*   the includedir (-I) path
+*   necessary macro (-D) definitions
+*   further required flags (-pthread)
+*   the library (-L) path
+*   the library (-l) to link to
+
+All current build systems support pkg-config in one way or another. For all
+examples here we assume you want to compile the sample
+`samples/sample3_unittest.cc`.
+
+### CMake
+
+Using `pkg-config` in CMake is fairly easy:
+
+```cmake
+cmake_minimum_required(VERSION 3.0)
+
+cmake_policy(SET CMP0048 NEW)
+project(my_gtest_pkgconfig VERSION 0.0.1 LANGUAGES CXX)
+
+find_package(PkgConfig)
+pkg_search_module(GTEST REQUIRED gtest_main)
+
+add_executable(testapp samples/sample3_unittest.cc)
+target_link_libraries(testapp ${GTEST_LDFLAGS})
+target_compile_options(testapp PUBLIC ${GTEST_CFLAGS})
+
+include(CTest)
+add_test(first_and_only_test testapp)
+```
+
+It is generally recommended that you use `target_compile_options` + `_CFLAGS`
+over `target_include_directories` + `_INCLUDE_DIRS` as the former includes not
+just -I flags (GoogleTest might require a macro indicating to internal headers
+that all libraries have been compiled with threading enabled. In addition,
+GoogleTest might also require `-pthread` in the compiling step, and as such
+splitting the pkg-config `Cflags` variable into include dirs and macros for
+`target_compile_definitions()` might still miss this). The same recommendation
+goes for using `_LDFLAGS` over the more commonplace `_LIBRARIES`, which happens
+to discard `-L` flags and `-pthread`.
+
+### Autotools
+
+Finding GoogleTest in Autoconf and using it from Automake is also fairly easy:
+
+In your `configure.ac`:
+
+```
+AC_PREREQ([2.69])
+AC_INIT([my_gtest_pkgconfig], [0.0.1])
+AC_CONFIG_SRCDIR([samples/sample3_unittest.cc])
+AC_PROG_CXX
+
+PKG_CHECK_MODULES([GTEST], [gtest_main])
+
+AM_INIT_AUTOMAKE([foreign subdir-objects])
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT
+```
+
+and in your `Makefile.am`:
+
+```
+check_PROGRAMS = testapp
+TESTS = $(check_PROGRAMS)
+
+testapp_SOURCES = samples/sample3_unittest.cc
+testapp_CXXFLAGS = $(GTEST_CFLAGS)
+testapp_LDADD = $(GTEST_LIBS)
+```
+
+### Meson
+
+Meson natively uses pkgconfig to query dependencies:
+
+```
+project('my_gtest_pkgconfig', 'cpp', version : '0.0.1')
+
+gtest_dep = dependency('gtest_main')
+
+testapp = executable(
+  'testapp',
+  files(['samples/sample3_unittest.cc']),
+  dependencies : gtest_dep,
+  install : false)
+
+test('first_and_only_test', testapp)
+```
+
+### Plain Makefiles
+
+Since `pkg-config` is a small Unix command-line utility, it can be used in
+handwritten `Makefile`s too:
+
+```makefile
+GTEST_CFLAGS = `pkg-config --cflags gtest_main`
+GTEST_LIBS = `pkg-config --libs gtest_main`
+
+.PHONY: tests all
+
+tests: all
+  ./testapp
+
+all: testapp
+
+testapp: testapp.o
+  $(CXX) $(CXXFLAGS) $(LDFLAGS) $< -o $@ $(GTEST_LIBS)
+
+testapp.o: samples/sample3_unittest.cc
+  $(CXX) $(CPPFLAGS) $(CXXFLAGS) $< -c -o $@ $(GTEST_CFLAGS)
+```
+
+### Help! pkg-config can't find GoogleTest!
+
+Let's say you have a `CMakeLists.txt` along the lines of the one in this
+tutorial and you try to run `cmake`. It is very possible that you get a failure
+along the lines of:
+
+```
+-- Checking for one of the modules 'gtest_main'
+CMake Error at /usr/share/cmake/Modules/FindPkgConfig.cmake:640 (message):
+  None of the required 'gtest_main' found
+```
+
+These failures are common if you installed GoogleTest yourself and have not
+sourced it from a distro or other package manager. If so, you need to tell
+pkg-config where it can find the `.pc` files containing the information. Say you
+installed GoogleTest to `/usr/local`, then it might be that the `.pc` files are
+installed under `/usr/local/lib64/pkgconfig`. If you set
+
+```
+export PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig
+```
+
+pkg-config will also try to look in `PKG_CONFIG_PATH` to find `gtest_main.pc`.
diff --git a/build/_deps/googletest-src/googletest/docs/primer.md b/build/_deps/googletest-src/googletest/docs/primer.md
new file mode 100644
index 0000000000000000000000000000000000000000..0317692bbb0f041b1d120eae18dfb446755ae393
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/docs/primer.md
@@ -0,0 +1,567 @@
+# Googletest Primer
+
+## Introduction: Why googletest?
+
+*googletest* helps you write better C++ tests.
+
+googletest is a testing framework developed by the Testing Technology team with
+Google's specific requirements and constraints in mind. Whether you work on
+Linux, Windows, or a Mac, if you write C++ code, googletest can help you. And it
+supports *any* kind of tests, not just unit tests.
+
+So what makes a good test, and how does googletest fit in? We believe:
+
+1.  Tests should be *independent* and *repeatable*. It's a pain to debug a test
+    that succeeds or fails as a result of other tests. googletest isolates the
+    tests by running each of them on a different object. When a test fails,
+    googletest allows you to run it in isolation for quick debugging.
+2.  Tests should be well *organized* and reflect the structure of the tested
+    code. googletest groups related tests into test suites that can share data
+    and subroutines. This common pattern is easy to recognize and makes tests
+    easy to maintain. Such consistency is especially helpful when people switch
+    projects and start to work on a new code base.
+3.  Tests should be *portable* and *reusable*. Google has a lot of code that is
+    platform-neutral; its tests should also be platform-neutral. googletest
+    works on different OSes, with different compilers, with or without
+    exceptions, so googletest tests can work with a variety of configurations.
+4.  When tests fail, they should provide as much *information* about the problem
+    as possible. googletest doesn't stop at the first test failure. Instead, it
+    only stops the current test and continues with the next. You can also set up
+    tests that report non-fatal failures after which the current test continues.
+    Thus, you can detect and fix multiple bugs in a single run-edit-compile
+    cycle.
+5.  The testing framework should liberate test writers from housekeeping chores
+    and let them focus on the test *content*. googletest automatically keeps
+    track of all tests defined, and doesn't require the user to enumerate them
+    in order to run them.
+6.  Tests should be *fast*. With googletest, you can reuse shared resources
+    across tests and pay for the set-up/tear-down only once, without making
+    tests depend on each other.
+
+Since googletest is based on the popular xUnit architecture, you'll feel right
+at home if you've used JUnit or PyUnit before. If not, it will take you about 10
+minutes to learn the basics and get started. So let's go!
+
+## Beware of the nomenclature
+
+_Note:_ There might be some confusion arising from different definitions of the
+terms _Test_, _Test Case_ and _Test Suite_, so beware of misunderstanding these.
+
+Historically, googletest started to use the term _Test Case_ for grouping
+related tests, whereas current publications, including International Software
+Testing Qualifications Board ([ISTQB](http://www.istqb.org/)) materials and
+various textbooks on software quality, use the term
+_[Test Suite][istqb test suite]_ for this.
+
+The related term _Test_, as it is used in googletest, corresponds to the term
+_[Test Case][istqb test case]_ of ISTQB and others.
+
+The term _Test_ is commonly of broad enough sense, including ISTQB's definition
+of _Test Case_, so it's not much of a problem here. But the term _Test Case_ as
+was used in Google Test is of contradictory sense and thus confusing.
+
+googletest recently started replacing the term _Test Case_ with _Test Suite_.
+The preferred API is *TestSuite*. The older TestCase API is being slowly
+deprecated and refactored away.
+
+So please be aware of the different definitions of the terms:
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+Meaning                                                                              | googletest Term         | [ISTQB](http://www.istqb.org/) Term
+:----------------------------------------------------------------------------------- | :---------------------- | :----------------------------------
+Exercise a particular program path with specific input values and verify the results | [TEST()](#simple-tests) | [Test Case][istqb test case]
+
+<!-- mdformat on -->
+
+[istqb test case]: http://glossary.istqb.org/en/search/test%20case
+[istqb test suite]: http://glossary.istqb.org/en/search/test%20suite
+
+## Basic Concepts
+
+When using googletest, you start by writing *assertions*, which are statements
+that check whether a condition is true. An assertion's result can be *success*,
+*nonfatal failure*, or *fatal failure*. If a fatal failure occurs, it aborts the
+current function; otherwise the program continues normally.
+
+*Tests* use assertions to verify the tested code's behavior. If a test crashes
+or has a failed assertion, then it *fails*; otherwise it *succeeds*.
+
+A *test suite* contains one or many tests. You should group your tests into test
+suites that reflect the structure of the tested code. When multiple tests in a
+test suite need to share common objects and subroutines, you can put them into a
+*test fixture* class.
+
+A *test program* can contain multiple test suites.
+
+We'll now explain how to write a test program, starting at the individual
+assertion level and building up to tests and test suites.
+
+## Assertions
+
+googletest assertions are macros that resemble function calls. You test a class
+or function by making assertions about its behavior. When an assertion fails,
+googletest prints the assertion's source file and line number location, along
+with a failure message. You may also supply a custom failure message which will
+be appended to googletest's message.
+
+The assertions come in pairs that test the same thing but have different effects
+on the current function. `ASSERT_*` versions generate fatal failures when they
+fail, and **abort the current function**. `EXPECT_*` versions generate nonfatal
+failures, which don't abort the current function. Usually `EXPECT_*` are
+preferred, as they allow more than one failure to be reported in a test.
+However, you should use `ASSERT_*` if it doesn't make sense to continue when the
+assertion in question fails.
+
+Since a failed `ASSERT_*` returns from the current function immediately,
+possibly skipping clean-up code that comes after it, it may cause a space leak.
+Depending on the nature of the leak, it may or may not be worth fixing - so keep
+this in mind if you get a heap checker error in addition to assertion errors.
+
+To provide a custom failure message, simply stream it into the macro using the
+`<<` operator or a sequence of such operators. An example:
+
+```c++
+ASSERT_EQ(x.size(), y.size()) << "Vectors x and y are of unequal length";
+
+for (int i = 0; i < x.size(); ++i) {
+  EXPECT_EQ(x[i], y[i]) << "Vectors x and y differ at index " << i;
+}
+```
+
+Anything that can be streamed to an `ostream` can be streamed to an assertion
+macro--in particular, C strings and `string` objects. If a wide string
+(`wchar_t*`, `TCHAR*` in `UNICODE` mode on Windows, or `std::wstring`) is
+streamed to an assertion, it will be translated to UTF-8 when printed.
+
+### Basic Assertions
+
+These assertions do basic true/false condition testing.
+
+Fatal assertion            | Nonfatal assertion         | Verifies
+-------------------------- | -------------------------- | --------------------
+`ASSERT_TRUE(condition);`  | `EXPECT_TRUE(condition);`  | `condition` is true
+`ASSERT_FALSE(condition);` | `EXPECT_FALSE(condition);` | `condition` is false
+
+Remember, when they fail, `ASSERT_*` yields a fatal failure and returns from the
+current function, while `EXPECT_*` yields a nonfatal failure, allowing the
+function to continue running. In either case, an assertion failure means its
+containing test fails.
+
+**Availability**: Linux, Windows, Mac.
+
+### Binary Comparison
+
+This section describes assertions that compare two values.
+
+Fatal assertion          | Nonfatal assertion       | Verifies
+------------------------ | ------------------------ | --------------
+`ASSERT_EQ(val1, val2);` | `EXPECT_EQ(val1, val2);` | `val1 == val2`
+`ASSERT_NE(val1, val2);` | `EXPECT_NE(val1, val2);` | `val1 != val2`
+`ASSERT_LT(val1, val2);` | `EXPECT_LT(val1, val2);` | `val1 < val2`
+`ASSERT_LE(val1, val2);` | `EXPECT_LE(val1, val2);` | `val1 <= val2`
+`ASSERT_GT(val1, val2);` | `EXPECT_GT(val1, val2);` | `val1 > val2`
+`ASSERT_GE(val1, val2);` | `EXPECT_GE(val1, val2);` | `val1 >= val2`
+
+Value arguments must be comparable by the assertion's comparison operator or
+you'll get a compiler error. We used to require the arguments to support the
+`<<` operator for streaming to an `ostream`, but this is no longer necessary. If
+`<<` is supported, it will be called to print the arguments when the assertion
+fails; otherwise googletest will attempt to print them in the best way it can.
+For more details and how to customize the printing of the arguments, see the
+[documentation](../../googlemock/docs/cook_book.md#teaching-gmock-how-to-print-your-values).
+
+These assertions can work with a user-defined type, but only if you define the
+corresponding comparison operator (e.g., `==` or `<`). Since this is discouraged
+by the Google
+[C++ Style Guide](https://google.github.io/styleguide/cppguide.html#Operator_Overloading),
+you may need to use `ASSERT_TRUE()` or `EXPECT_TRUE()` to assert the equality of
+two objects of a user-defined type.
+
+However, when possible, `ASSERT_EQ(actual, expected)` is preferred to
+`ASSERT_TRUE(actual == expected)`, since it tells you `actual` and `expected`'s
+values on failure.
+
+Arguments are always evaluated exactly once. Therefore, it's OK for the
+arguments to have side effects. However, as with any ordinary C/C++ function,
+the arguments' evaluation order is undefined (i.e., the compiler is free to
+choose any order), and your code should not depend on any particular argument
+evaluation order.
+
+`ASSERT_EQ()` does pointer equality on pointers. If used on two C strings, it
+tests if they are in the same memory location, not if they have the same value.
+Therefore, if you want to compare C strings (e.g. `const char*`) by value, use
+`ASSERT_STREQ()`, which will be described later on. In particular, to assert
+that a C string is `NULL`, use `ASSERT_STREQ(c_string, NULL)`. Consider using
+`ASSERT_EQ(c_string, nullptr)` if c++11 is supported. To compare two `string`
+objects, you should use `ASSERT_EQ`.
+
+When doing pointer comparisons use `*_EQ(ptr, nullptr)` and `*_NE(ptr, nullptr)`
+instead of `*_EQ(ptr, NULL)` and `*_NE(ptr, NULL)`. This is because `nullptr` is
+typed, while `NULL` is not. See the [FAQ](faq.md) for more details.
+
+If you're working with floating point numbers, you may want to use the floating
+point variations of some of these macros in order to avoid problems caused by
+rounding. See [Advanced googletest Topics](advanced.md) for details.
+
+Macros in this section work with both narrow and wide string objects (`string`
+and `wstring`).
+
+**Availability**: Linux, Windows, Mac.
+
+**Historical note**: Before February 2016 `*_EQ` had a convention of calling it
+as `ASSERT_EQ(expected, actual)`, so lots of existing code uses this order. Now
+`*_EQ` treats both parameters in the same way.
+
+### String Comparison
+
+The assertions in this group compare two **C strings**. If you want to compare
+two `string` objects, use `EXPECT_EQ`, `EXPECT_NE`, and etc instead.
+
+<!-- mdformat off(github rendering does not support multiline tables) -->
+
+| Fatal assertion                | Nonfatal assertion             | Verifies                                                 |
+| --------------------------     | ------------------------------ | -------------------------------------------------------- |
+| `ASSERT_STREQ(str1,str2);`     | `EXPECT_STREQ(str1,str2);`     | the two C strings have the same content   		     |
+| `ASSERT_STRNE(str1,str2);`     | `EXPECT_STRNE(str1,str2);`     | the two C strings have different contents 		     |
+| `ASSERT_STRCASEEQ(str1,str2);` | `EXPECT_STRCASEEQ(str1,str2);` | the two C strings have the same content, ignoring case   |
+| `ASSERT_STRCASENE(str1,str2);` | `EXPECT_STRCASENE(str1,str2);` | the two C strings have different contents, ignoring case |
+
+<!-- mdformat on-->
+
+Note that "CASE" in an assertion name means that case is ignored. A `NULL`
+pointer and an empty string are considered *different*.
+
+`*STREQ*` and `*STRNE*` also accept wide C strings (`wchar_t*`). If a comparison
+of two wide strings fails, their values will be printed as UTF-8 narrow strings.
+
+**Availability**: Linux, Windows, Mac.
+
+**See also**: For more string comparison tricks (substring, prefix, suffix, and
+regular expression matching, for example), see [this](advanced.md) in the
+Advanced googletest Guide.
+
+## Simple Tests
+
+To create a test:
+
+1.  Use the `TEST()` macro to define and name a test function. These are
+    ordinary C++ functions that don't return a value.
+2.  In this function, along with any valid C++ statements you want to include,
+    use the various googletest assertions to check values.
+3.  The test's result is determined by the assertions; if any assertion in the
+    test fails (either fatally or non-fatally), or if the test crashes, the
+    entire test fails. Otherwise, it succeeds.
+
+```c++
+TEST(TestSuiteName, TestName) {
+  ... test body ...
+}
+```
+
+`TEST()` arguments go from general to specific. The *first* argument is the name
+of the test suite, and the *second* argument is the test's name within the test
+case. Both names must be valid C++ identifiers, and they should not contain
+any underscores (`_`). A test's *full name* consists of its containing test suite and
+its individual name. Tests from different test suites can have the same
+individual name.
+
+For example, let's take a simple integer function:
+
+```c++
+int Factorial(int n);  // Returns the factorial of n
+```
+
+A test suite for this function might look like:
+
+```c++
+// Tests factorial of 0.
+TEST(FactorialTest, HandlesZeroInput) {
+  EXPECT_EQ(Factorial(0), 1);
+}
+
+// Tests factorial of positive numbers.
+TEST(FactorialTest, HandlesPositiveInput) {
+  EXPECT_EQ(Factorial(1), 1);
+  EXPECT_EQ(Factorial(2), 2);
+  EXPECT_EQ(Factorial(3), 6);
+  EXPECT_EQ(Factorial(8), 40320);
+}
+```
+
+googletest groups the test results by test suites, so logically related tests
+should be in the same test suite; in other words, the first argument to their
+`TEST()` should be the same. In the above example, we have two tests,
+`HandlesZeroInput` and `HandlesPositiveInput`, that belong to the same test
+suite `FactorialTest`.
+
+When naming your test suites and tests, you should follow the same convention as
+for
+[naming functions and classes](https://google.github.io/styleguide/cppguide.html#Function_Names).
+
+**Availability**: Linux, Windows, Mac.
+
+## Test Fixtures: Using the Same Data Configuration for Multiple Tests {#same-data-multiple-tests}
+
+If you find yourself writing two or more tests that operate on similar data, you
+can use a *test fixture*. This allows you to reuse the same configuration of
+objects for several different tests.
+
+To create a fixture:
+
+1.  Derive a class from `::testing::Test` . Start its body with `protected:`, as
+    we'll want to access fixture members from sub-classes.
+2.  Inside the class, declare any objects you plan to use.
+3.  If necessary, write a default constructor or `SetUp()` function to prepare
+    the objects for each test. A common mistake is to spell `SetUp()` as
+    **`Setup()`** with a small `u` - Use `override` in C++11 to make sure you
+    spelled it correctly.
+4.  If necessary, write a destructor or `TearDown()` function to release any
+    resources you allocated in `SetUp()` . To learn when you should use the
+    constructor/destructor and when you should use `SetUp()/TearDown()`, read
+    the [FAQ](faq.md#CtorVsSetUp).
+5.  If needed, define subroutines for your tests to share.
+
+When using a fixture, use `TEST_F()` instead of `TEST()` as it allows you to
+access objects and subroutines in the test fixture:
+
+```c++
+TEST_F(TestFixtureName, TestName) {
+  ... test body ...
+}
+```
+
+Like `TEST()`, the first argument is the test suite name, but for `TEST_F()`
+this must be the name of the test fixture class. You've probably guessed: `_F`
+is for fixture.
+
+Unfortunately, the C++ macro system does not allow us to create a single macro
+that can handle both types of tests. Using the wrong macro causes a compiler
+error.
+
+Also, you must first define a test fixture class before using it in a
+`TEST_F()`, or you'll get the compiler error "`virtual outside class
+declaration`".
+
+For each test defined with `TEST_F()`, googletest will create a *fresh* test
+fixture at runtime, immediately initialize it via `SetUp()`, run the test,
+clean up by calling `TearDown()`, and then delete the test fixture. Note that
+different tests in the same test suite have different test fixture objects, and
+googletest always deletes a test fixture before it creates the next one.
+googletest does **not** reuse the same test fixture for multiple tests. Any
+changes one test makes to the fixture do not affect other tests.
+
+As an example, let's write tests for a FIFO queue class named `Queue`, which has
+the following interface:
+
+```c++
+template <typename E>  // E is the element type.
+class Queue {
+ public:
+  Queue();
+  void Enqueue(const E& element);
+  E* Dequeue();  // Returns NULL if the queue is empty.
+  size_t size() const;
+  ...
+};
+```
+
+First, define a fixture class. By convention, you should give it the name
+`FooTest` where `Foo` is the class being tested.
+
+```c++
+class QueueTest : public ::testing::Test {
+ protected:
+  void SetUp() override {
+     q1_.Enqueue(1);
+     q2_.Enqueue(2);
+     q2_.Enqueue(3);
+  }
+
+  // void TearDown() override {}
+
+  Queue<int> q0_;
+  Queue<int> q1_;
+  Queue<int> q2_;
+};
+```
+
+In this case, `TearDown()` is not needed since we don't have to clean up after
+each test, other than what's already done by the destructor.
+
+Now we'll write tests using `TEST_F()` and this fixture.
+
+```c++
+TEST_F(QueueTest, IsEmptyInitially) {
+  EXPECT_EQ(q0_.size(), 0);
+}
+
+TEST_F(QueueTest, DequeueWorks) {
+  int* n = q0_.Dequeue();
+  EXPECT_EQ(n, nullptr);
+
+  n = q1_.Dequeue();
+  ASSERT_NE(n, nullptr);
+  EXPECT_EQ(*n, 1);
+  EXPECT_EQ(q1_.size(), 0);
+  delete n;
+
+  n = q2_.Dequeue();
+  ASSERT_NE(n, nullptr);
+  EXPECT_EQ(*n, 2);
+  EXPECT_EQ(q2_.size(), 1);
+  delete n;
+}
+```
+
+The above uses both `ASSERT_*` and `EXPECT_*` assertions. The rule of thumb is
+to use `EXPECT_*` when you want the test to continue to reveal more errors after
+the assertion failure, and use `ASSERT_*` when continuing after failure doesn't
+make sense. For example, the second assertion in the `Dequeue` test is
+`ASSERT_NE(nullptr, n)`, as we need to dereference the pointer `n` later, which
+would lead to a segfault when `n` is `NULL`.
+
+When these tests run, the following happens:
+
+1.  googletest constructs a `QueueTest` object (let's call it `t1`).
+2.  `t1.SetUp()` initializes `t1`.
+3.  The first test (`IsEmptyInitially`) runs on `t1`.
+4.  `t1.TearDown()` cleans up after the test finishes.
+5.  `t1` is destructed.
+6.  The above steps are repeated on another `QueueTest` object, this time
+    running the `DequeueWorks` test.
+
+**Availability**: Linux, Windows, Mac.
+
+## Invoking the Tests
+
+`TEST()` and `TEST_F()` implicitly register their tests with googletest. So,
+unlike with many other C++ testing frameworks, you don't have to re-list all
+your defined tests in order to run them.
+
+After defining your tests, you can run them with `RUN_ALL_TESTS()`, which
+returns `0` if all the tests are successful, or `1` otherwise. Note that
+`RUN_ALL_TESTS()` runs *all tests* in your link unit--they can be from
+different test suites, or even different source files.
+
+When invoked, the `RUN_ALL_TESTS()` macro:
+
+*   Saves the state of all googletest flags.
+
+*   Creates a test fixture object for the first test.
+
+*   Initializes it via `SetUp()`.
+
+*   Runs the test on the fixture object.
+
+*   Cleans up the fixture via `TearDown()`.
+
+*   Deletes the fixture.
+
+*   Restores the state of all googletest flags.
+
+*   Repeats the above steps for the next test, until all tests have run.
+
+If a fatal failure happens the subsequent steps will be skipped.
+
+> IMPORTANT: You must **not** ignore the return value of `RUN_ALL_TESTS()`, or
+> you will get a compiler error. The rationale for this design is that the
+> automated testing service determines whether a test has passed based on its
+> exit code, not on its stdout/stderr output; thus your `main()` function must
+> return the value of `RUN_ALL_TESTS()`.
+>
+> Also, you should call `RUN_ALL_TESTS()` only **once**. Calling it more than
+> once conflicts with some advanced googletest features (e.g., thread-safe
+> [death tests](advanced.md#death-tests)) and thus is not supported.
+
+**Availability**: Linux, Windows, Mac.
+
+## Writing the main() Function
+
+Write your own main() function, which should return the value of
+`RUN_ALL_TESTS()`.
+
+You can start from this boilerplate:
+
+```c++
+#include "this/package/foo.h"
+#include "gtest/gtest.h"
+
+namespace {
+
+// The fixture for testing class Foo.
+class FooTest : public ::testing::Test {
+ protected:
+  // You can remove any or all of the following functions if its body
+  // is empty.
+
+  FooTest() {
+     // You can do set-up work for each test here.
+  }
+
+  ~FooTest() override {
+     // You can do clean-up work that doesn't throw exceptions here.
+  }
+
+  // If the constructor and destructor are not enough for setting up
+  // and cleaning up each test, you can define the following methods:
+
+  void SetUp() override {
+     // Code here will be called immediately after the constructor (right
+     // before each test).
+  }
+
+  void TearDown() override {
+     // Code here will be called immediately after each test (right
+     // before the destructor).
+  }
+
+  // Objects declared here can be used by all tests in the test suite for Foo.
+};
+
+// Tests that the Foo::Bar() method does Abc.
+TEST_F(FooTest, MethodBarDoesAbc) {
+  const std::string input_filepath = "this/package/testdata/myinputfile.dat";
+  const std::string output_filepath = "this/package/testdata/myoutputfile.dat";
+  Foo f;
+  EXPECT_EQ(f.Bar(input_filepath, output_filepath), 0);
+}
+
+// Tests that Foo does Xyz.
+TEST_F(FooTest, DoesXyz) {
+  // Exercises the Xyz feature of Foo.
+}
+
+}  // namespace
+
+int main(int argc, char **argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
+```
+
+The `::testing::InitGoogleTest()` function parses the command line for
+googletest flags, and removes all recognized flags. This allows the user to
+control a test program's behavior via various flags, which we'll cover in
+the [AdvancedGuide](advanced.md). You **must** call this function before calling
+`RUN_ALL_TESTS()`, or the flags won't be properly initialized.
+
+On Windows, `InitGoogleTest()` also works with wide strings, so it can be used
+in programs compiled in `UNICODE` mode as well.
+
+But maybe you think that writing all those main() functions is too much work? We
+agree with you completely, and that's why Google Test provides a basic
+implementation of main(). If it fits your needs, then just link your test with
+gtest\_main library and you are good to go.
+
+NOTE: `ParseGUnitFlags()` is deprecated in favor of `InitGoogleTest()`.
+
+## Known Limitations
+
+*   Google Test is designed to be thread-safe. The implementation is thread-safe
+    on systems where the `pthreads` library is available. It is currently
+    _unsafe_ to use Google Test assertions from two threads concurrently on
+    other systems (e.g. Windows). In most tests this is not an issue as usually
+    the assertions are done in the main thread. If you want to help, you can
+    volunteer to implement the necessary synchronization primitives in
+    `gtest-port.h` for your platform.
diff --git a/build/_deps/googletest-src/googletest/docs/pump_manual.md b/build/_deps/googletest-src/googletest/docs/pump_manual.md
new file mode 100644
index 0000000000000000000000000000000000000000..10b3c5ff084925803d10d659f0c2234991590f37
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/docs/pump_manual.md
@@ -0,0 +1,190 @@
+<b>P</b>ump is <b>U</b>seful for <b>M</b>eta <b>P</b>rogramming.
+
+# The Problem
+
+Template and macro libraries often need to define many classes, functions, or
+macros that vary only (or almost only) in the number of arguments they take.
+It's a lot of repetitive, mechanical, and error-prone work.
+
+Variadic templates and variadic macros can alleviate the problem. However, while
+both are being considered by the C++ committee, neither is in the standard yet
+or widely supported by compilers. Thus they are often not a good choice,
+especially when your code needs to be portable. And their capabilities are still
+limited.
+
+As a result, authors of such libraries often have to write scripts to generate
+their implementation. However, our experience is that it's tedious to write such
+scripts, which tend to reflect the structure of the generated code poorly and
+are often hard to read and edit. For example, a small change needed in the
+generated code may require some non-intuitive, non-trivial changes in the
+script. This is especially painful when experimenting with the code.
+
+# Our Solution
+
+Pump (for Pump is Useful for Meta Programming, Pretty Useful for Meta
+Programming, or Practical Utility for Meta Programming, whichever you prefer) is
+a simple meta-programming tool for C++. The idea is that a programmer writes a
+`foo.pump` file which contains C++ code plus meta code that manipulates the C++
+code. The meta code can handle iterations over a range, nested iterations, local
+meta variable definitions, simple arithmetic, and conditional expressions. You
+can view it as a small Domain-Specific Language. The meta language is designed
+to be non-intrusive (s.t. it won't confuse Emacs' C++ mode, for example) and
+concise, making Pump code intuitive and easy to maintain.
+
+## Highlights
+
+*   The implementation is in a single Python script and thus ultra portable: no
+    build or installation is needed and it works cross platforms.
+*   Pump tries to be smart with respect to
+    [Google's style guide](https://github.com/google/styleguide): it breaks long
+    lines (easy to have when they are generated) at acceptable places to fit
+    within 80 columns and indent the continuation lines correctly.
+*   The format is human-readable and more concise than XML.
+*   The format works relatively well with Emacs' C++ mode.
+
+## Examples
+
+The following Pump code (where meta keywords start with `$`, `[[` and `]]` are
+meta brackets, and `$$` starts a meta comment that ends with the line):
+
+```
+$var n = 3     $$ Defines a meta variable n.
+$range i 0..n  $$ Declares the range of meta iterator i (inclusive).
+$for i [[
+               $$ Meta loop.
+// Foo$i does blah for $i-ary predicates.
+$range j 1..i
+template <size_t N $for j [[, typename A$j]]>
+class Foo$i {
+$if i == 0 [[
+  blah a;
+]] $elif i <= 2 [[
+  blah b;
+]] $else [[
+  blah c;
+]]
+};
+
+]]
+```
+
+will be translated by the Pump compiler to:
+
+```cpp
+// Foo0 does blah for 0-ary predicates.
+template <size_t N>
+class Foo0 {
+  blah a;
+};
+
+// Foo1 does blah for 1-ary predicates.
+template <size_t N, typename A1>
+class Foo1 {
+  blah b;
+};
+
+// Foo2 does blah for 2-ary predicates.
+template <size_t N, typename A1, typename A2>
+class Foo2 {
+  blah b;
+};
+
+// Foo3 does blah for 3-ary predicates.
+template <size_t N, typename A1, typename A2, typename A3>
+class Foo3 {
+  blah c;
+};
+```
+
+In another example,
+
+```
+$range i 1..n
+Func($for i + [[a$i]]);
+$$ The text between i and [[ is the separator between iterations.
+```
+
+will generate one of the following lines (without the comments), depending on
+the value of `n`:
+
+```cpp
+Func();              // If n is 0.
+Func(a1);            // If n is 1.
+Func(a1 + a2);       // If n is 2.
+Func(a1 + a2 + a3);  // If n is 3.
+// And so on...
+```
+
+## Constructs
+
+We support the following meta programming constructs:
+
+| `$var id = exp`                  | Defines a named constant value. `$id` is |
+:                                  : valid util the end of the current meta   :
+:                                  : lexical block.                           :
+| :------------------------------- | :--------------------------------------- |
+| `$range id exp..exp`             | Sets the range of an iteration variable, |
+:                                  : which can be reused in multiple loops    :
+:                                  : later.                                   :
+| `$for id sep [[ code ]]`         | Iteration. The range of `id` must have   |
+:                                  : been defined earlier. `$id` is valid in  :
+:                                  : `code`.                                  :
+| `$($)`                           | Generates a single `$` character.        |
+| `$id`                            | Value of the named constant or iteration |
+:                                  : variable.                                :
+| `$(exp)`                         | Value of the expression.                 |
+| `$if exp [[ code ]] else_branch` | Conditional.                             |
+| `[[ code ]]`                     | Meta lexical block.                      |
+| `cpp_code`                       | Raw C++ code.                            |
+| `$$ comment`                     | Meta comment.                            |
+
+**Note:** To give the user some freedom in formatting the Pump source code, Pump
+ignores a new-line character if it's right after `$for foo` or next to `[[` or
+`]]`. Without this rule you'll often be forced to write very long lines to get
+the desired output. Therefore sometimes you may need to insert an extra new-line
+in such places for a new-line to show up in your output.
+
+## Grammar
+
+```ebnf
+code ::= atomic_code*
+atomic_code ::= $var id = exp
+    | $var id = [[ code ]]
+    | $range id exp..exp
+    | $for id sep [[ code ]]
+    | $($)
+    | $id
+    | $(exp)
+    | $if exp [[ code ]] else_branch
+    | [[ code ]]
+    | cpp_code
+sep ::= cpp_code | empty_string
+else_branch ::= $else [[ code ]]
+    | $elif exp [[ code ]] else_branch
+    | empty_string
+exp ::= simple_expression_in_Python_syntax
+```
+
+## Code
+
+You can find the source code of Pump in [scripts/pump.py](../scripts/pump.py).
+It is still very unpolished and lacks automated tests, although it has been
+successfully used many times. If you find a chance to use it in your project,
+please let us know what you think! We also welcome help on improving Pump.
+
+## Real Examples
+
+You can find real-world applications of Pump in
+[Google Test](https://github.com/google/googletest/tree/master/googletest) and
+[Google Mock](https://github.com/google/googletest/tree/master/googlemock). The
+source file `foo.h.pump` generates `foo.h`.
+
+## Tips
+
+*   If a meta variable is followed by a letter or digit, you can separate them
+    using `[[]]`, which inserts an empty string. For example `Foo$j[[]]Helper`
+    generate `Foo1Helper` when `j` is 1.
+*   To avoid extra-long Pump source lines, you can break a line anywhere you
+    want by inserting `[[]]` followed by a new line. Since any new-line
+    character next to `[[` or `]]` is ignored, the generated code won't contain
+    this new line.
diff --git a/build/_deps/googletest-src/googletest/docs/samples.md b/build/_deps/googletest-src/googletest/docs/samples.md
new file mode 100644
index 0000000000000000000000000000000000000000..aaa5883830b6d6cb6d33104de3d2206288d8d41e
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/docs/samples.md
@@ -0,0 +1,22 @@
+# Googletest Samples {#samples}
+
+If you're like us, you'd like to look at
+[googletest samples.](https://github.com/google/googletest/tree/master/googletest/samples)
+The sample directory has a number of well-commented samples showing how to use a
+variety of googletest features.
+
+*   Sample #1 shows the basic steps of using googletest to test C++ functions.
+*   Sample #2 shows a more complex unit test for a class with multiple member
+    functions.
+*   Sample #3 uses a test fixture.
+*   Sample #4 teaches you how to use googletest and `googletest.h` together to
+    get the best of both libraries.
+*   Sample #5 puts shared testing logic in a base test fixture, and reuses it in
+    derived fixtures.
+*   Sample #6 demonstrates type-parameterized tests.
+*   Sample #7 teaches the basics of value-parameterized tests.
+*   Sample #8 shows using `Combine()` in value-parameterized tests.
+*   Sample #9 shows use of the listener API to modify Google Test's console
+    output and the use of its reflection API to inspect test results.
+*   Sample #10 shows use of the listener API to implement a primitive memory
+    leak checker.
diff --git a/build/_deps/googletest-src/googletest/include/gtest/gtest-death-test.h b/build/_deps/googletest-src/googletest/include/gtest/gtest-death-test.h
new file mode 100644
index 0000000000000000000000000000000000000000..dc878ffbb3ae56a2b91b930b71a7cbb503222a46
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/gtest-death-test.h
@@ -0,0 +1,343 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This header file defines the public API for death tests.  It is
+// #included by gtest.h so a user doesn't need to include this
+// directly.
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_
+#define GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_
+
+#include "gtest/internal/gtest-death-test-internal.h"
+
+namespace testing {
+
+// This flag controls the style of death tests.  Valid values are "threadsafe",
+// meaning that the death test child process will re-execute the test binary
+// from the start, running only a single death test, or "fast",
+// meaning that the child process will execute the test logic immediately
+// after forking.
+GTEST_DECLARE_string_(death_test_style);
+
+#if GTEST_HAS_DEATH_TEST
+
+namespace internal {
+
+// Returns a Boolean value indicating whether the caller is currently
+// executing in the context of the death test child process.  Tools such as
+// Valgrind heap checkers may need this to modify their behavior in death
+// tests.  IMPORTANT: This is an internal utility.  Using it may break the
+// implementation of death tests.  User code MUST NOT use it.
+GTEST_API_ bool InDeathTestChild();
+
+}  // namespace internal
+
+// The following macros are useful for writing death tests.
+
+// Here's what happens when an ASSERT_DEATH* or EXPECT_DEATH* is
+// executed:
+//
+//   1. It generates a warning if there is more than one active
+//   thread.  This is because it's safe to fork() or clone() only
+//   when there is a single thread.
+//
+//   2. The parent process clone()s a sub-process and runs the death
+//   test in it; the sub-process exits with code 0 at the end of the
+//   death test, if it hasn't exited already.
+//
+//   3. The parent process waits for the sub-process to terminate.
+//
+//   4. The parent process checks the exit code and error message of
+//   the sub-process.
+//
+// Examples:
+//
+//   ASSERT_DEATH(server.SendMessage(56, "Hello"), "Invalid port number");
+//   for (int i = 0; i < 5; i++) {
+//     EXPECT_DEATH(server.ProcessRequest(i),
+//                  "Invalid request .* in ProcessRequest()")
+//                  << "Failed to die on request " << i;
+//   }
+//
+//   ASSERT_EXIT(server.ExitNow(), ::testing::ExitedWithCode(0), "Exiting");
+//
+//   bool KilledBySIGHUP(int exit_code) {
+//     return WIFSIGNALED(exit_code) && WTERMSIG(exit_code) == SIGHUP;
+//   }
+//
+//   ASSERT_EXIT(client.HangUpServer(), KilledBySIGHUP, "Hanging up!");
+//
+// On the regular expressions used in death tests:
+//
+//   GOOGLETEST_CM0005 DO NOT DELETE
+//   On POSIX-compliant systems (*nix), we use the <regex.h> library,
+//   which uses the POSIX extended regex syntax.
+//
+//   On other platforms (e.g. Windows or Mac), we only support a simple regex
+//   syntax implemented as part of Google Test.  This limited
+//   implementation should be enough most of the time when writing
+//   death tests; though it lacks many features you can find in PCRE
+//   or POSIX extended regex syntax.  For example, we don't support
+//   union ("x|y"), grouping ("(xy)"), brackets ("[xy]"), and
+//   repetition count ("x{5,7}"), among others.
+//
+//   Below is the syntax that we do support.  We chose it to be a
+//   subset of both PCRE and POSIX extended regex, so it's easy to
+//   learn wherever you come from.  In the following: 'A' denotes a
+//   literal character, period (.), or a single \\ escape sequence;
+//   'x' and 'y' denote regular expressions; 'm' and 'n' are for
+//   natural numbers.
+//
+//     c     matches any literal character c
+//     \\d   matches any decimal digit
+//     \\D   matches any character that's not a decimal digit
+//     \\f   matches \f
+//     \\n   matches \n
+//     \\r   matches \r
+//     \\s   matches any ASCII whitespace, including \n
+//     \\S   matches any character that's not a whitespace
+//     \\t   matches \t
+//     \\v   matches \v
+//     \\w   matches any letter, _, or decimal digit
+//     \\W   matches any character that \\w doesn't match
+//     \\c   matches any literal character c, which must be a punctuation
+//     .     matches any single character except \n
+//     A?    matches 0 or 1 occurrences of A
+//     A*    matches 0 or many occurrences of A
+//     A+    matches 1 or many occurrences of A
+//     ^     matches the beginning of a string (not that of each line)
+//     $     matches the end of a string (not that of each line)
+//     xy    matches x followed by y
+//
+//   If you accidentally use PCRE or POSIX extended regex features
+//   not implemented by us, you will get a run-time failure.  In that
+//   case, please try to rewrite your regular expression within the
+//   above syntax.
+//
+//   This implementation is *not* meant to be as highly tuned or robust
+//   as a compiled regex library, but should perform well enough for a
+//   death test, which already incurs significant overhead by launching
+//   a child process.
+//
+// Known caveats:
+//
+//   A "threadsafe" style death test obtains the path to the test
+//   program from argv[0] and re-executes it in the sub-process.  For
+//   simplicity, the current implementation doesn't search the PATH
+//   when launching the sub-process.  This means that the user must
+//   invoke the test program via a path that contains at least one
+//   path separator (e.g. path/to/foo_test and
+//   /absolute/path/to/bar_test are fine, but foo_test is not).  This
+//   is rarely a problem as people usually don't put the test binary
+//   directory in PATH.
+//
+
+// Asserts that a given statement causes the program to exit, with an
+// integer exit status that satisfies predicate, and emitting error output
+// that matches regex.
+# define ASSERT_EXIT(statement, predicate, regex) \
+    GTEST_DEATH_TEST_(statement, predicate, regex, GTEST_FATAL_FAILURE_)
+
+// Like ASSERT_EXIT, but continues on to successive tests in the
+// test suite, if any:
+# define EXPECT_EXIT(statement, predicate, regex) \
+    GTEST_DEATH_TEST_(statement, predicate, regex, GTEST_NONFATAL_FAILURE_)
+
+// Asserts that a given statement causes the program to exit, either by
+// explicitly exiting with a nonzero exit code or being killed by a
+// signal, and emitting error output that matches regex.
+# define ASSERT_DEATH(statement, regex) \
+    ASSERT_EXIT(statement, ::testing::internal::ExitedUnsuccessfully, regex)
+
+// Like ASSERT_DEATH, but continues on to successive tests in the
+// test suite, if any:
+# define EXPECT_DEATH(statement, regex) \
+    EXPECT_EXIT(statement, ::testing::internal::ExitedUnsuccessfully, regex)
+
+// Two predicate classes that can be used in {ASSERT,EXPECT}_EXIT*:
+
+// Tests that an exit code describes a normal exit with a given exit code.
+class GTEST_API_ ExitedWithCode {
+ public:
+  explicit ExitedWithCode(int exit_code);
+  bool operator()(int exit_status) const;
+ private:
+  // No implementation - assignment is unsupported.
+  void operator=(const ExitedWithCode& other);
+
+  const int exit_code_;
+};
+
+# if !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
+// Tests that an exit code describes an exit due to termination by a
+// given signal.
+// GOOGLETEST_CM0006 DO NOT DELETE
+class GTEST_API_ KilledBySignal {
+ public:
+  explicit KilledBySignal(int signum);
+  bool operator()(int exit_status) const;
+ private:
+  const int signum_;
+};
+# endif  // !GTEST_OS_WINDOWS
+
+// EXPECT_DEBUG_DEATH asserts that the given statements die in debug mode.
+// The death testing framework causes this to have interesting semantics,
+// since the sideeffects of the call are only visible in opt mode, and not
+// in debug mode.
+//
+// In practice, this can be used to test functions that utilize the
+// LOG(DFATAL) macro using the following style:
+//
+// int DieInDebugOr12(int* sideeffect) {
+//   if (sideeffect) {
+//     *sideeffect = 12;
+//   }
+//   LOG(DFATAL) << "death";
+//   return 12;
+// }
+//
+// TEST(TestSuite, TestDieOr12WorksInDgbAndOpt) {
+//   int sideeffect = 0;
+//   // Only asserts in dbg.
+//   EXPECT_DEBUG_DEATH(DieInDebugOr12(&sideeffect), "death");
+//
+// #ifdef NDEBUG
+//   // opt-mode has sideeffect visible.
+//   EXPECT_EQ(12, sideeffect);
+// #else
+//   // dbg-mode no visible sideeffect.
+//   EXPECT_EQ(0, sideeffect);
+// #endif
+// }
+//
+// This will assert that DieInDebugReturn12InOpt() crashes in debug
+// mode, usually due to a DCHECK or LOG(DFATAL), but returns the
+// appropriate fallback value (12 in this case) in opt mode. If you
+// need to test that a function has appropriate side-effects in opt
+// mode, include assertions against the side-effects.  A general
+// pattern for this is:
+//
+// EXPECT_DEBUG_DEATH({
+//   // Side-effects here will have an effect after this statement in
+//   // opt mode, but none in debug mode.
+//   EXPECT_EQ(12, DieInDebugOr12(&sideeffect));
+// }, "death");
+//
+# ifdef NDEBUG
+
+#  define EXPECT_DEBUG_DEATH(statement, regex) \
+  GTEST_EXECUTE_STATEMENT_(statement, regex)
+
+#  define ASSERT_DEBUG_DEATH(statement, regex) \
+  GTEST_EXECUTE_STATEMENT_(statement, regex)
+
+# else
+
+#  define EXPECT_DEBUG_DEATH(statement, regex) \
+  EXPECT_DEATH(statement, regex)
+
+#  define ASSERT_DEBUG_DEATH(statement, regex) \
+  ASSERT_DEATH(statement, regex)
+
+# endif  // NDEBUG for EXPECT_DEBUG_DEATH
+#endif  // GTEST_HAS_DEATH_TEST
+
+// This macro is used for implementing macros such as
+// EXPECT_DEATH_IF_SUPPORTED and ASSERT_DEATH_IF_SUPPORTED on systems where
+// death tests are not supported. Those macros must compile on such systems
+// if and only if EXPECT_DEATH and ASSERT_DEATH compile with the same parameters
+// on systems that support death tests. This allows one to write such a macro on
+// a system that does not support death tests and be sure that it will compile
+// on a death-test supporting system. It is exposed publicly so that systems
+// that have death-tests with stricter requirements than GTEST_HAS_DEATH_TEST
+// can write their own equivalent of EXPECT_DEATH_IF_SUPPORTED and
+// ASSERT_DEATH_IF_SUPPORTED.
+//
+// Parameters:
+//   statement -  A statement that a macro such as EXPECT_DEATH would test
+//                for program termination. This macro has to make sure this
+//                statement is compiled but not executed, to ensure that
+//                EXPECT_DEATH_IF_SUPPORTED compiles with a certain
+//                parameter if and only if EXPECT_DEATH compiles with it.
+//   regex     -  A regex that a macro such as EXPECT_DEATH would use to test
+//                the output of statement.  This parameter has to be
+//                compiled but not evaluated by this macro, to ensure that
+//                this macro only accepts expressions that a macro such as
+//                EXPECT_DEATH would accept.
+//   terminator - Must be an empty statement for EXPECT_DEATH_IF_SUPPORTED
+//                and a return statement for ASSERT_DEATH_IF_SUPPORTED.
+//                This ensures that ASSERT_DEATH_IF_SUPPORTED will not
+//                compile inside functions where ASSERT_DEATH doesn't
+//                compile.
+//
+//  The branch that has an always false condition is used to ensure that
+//  statement and regex are compiled (and thus syntactically correct) but
+//  never executed. The unreachable code macro protects the terminator
+//  statement from generating an 'unreachable code' warning in case
+//  statement unconditionally returns or throws. The Message constructor at
+//  the end allows the syntax of streaming additional messages into the
+//  macro, for compilational compatibility with EXPECT_DEATH/ASSERT_DEATH.
+# define GTEST_UNSUPPORTED_DEATH_TEST(statement, regex, terminator) \
+    GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
+    if (::testing::internal::AlwaysTrue()) { \
+      GTEST_LOG_(WARNING) \
+          << "Death tests are not supported on this platform.\n" \
+          << "Statement '" #statement "' cannot be verified."; \
+    } else if (::testing::internal::AlwaysFalse()) { \
+      ::testing::internal::RE::PartialMatch(".*", (regex)); \
+      GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
+      terminator; \
+    } else \
+      ::testing::Message()
+
+// EXPECT_DEATH_IF_SUPPORTED(statement, regex) and
+// ASSERT_DEATH_IF_SUPPORTED(statement, regex) expand to real death tests if
+// death tests are supported; otherwise they just issue a warning.  This is
+// useful when you are combining death test assertions with normal test
+// assertions in one test.
+#if GTEST_HAS_DEATH_TEST
+# define EXPECT_DEATH_IF_SUPPORTED(statement, regex) \
+    EXPECT_DEATH(statement, regex)
+# define ASSERT_DEATH_IF_SUPPORTED(statement, regex) \
+    ASSERT_DEATH(statement, regex)
+#else
+# define EXPECT_DEATH_IF_SUPPORTED(statement, regex) \
+    GTEST_UNSUPPORTED_DEATH_TEST(statement, regex, )
+# define ASSERT_DEATH_IF_SUPPORTED(statement, regex) \
+    GTEST_UNSUPPORTED_DEATH_TEST(statement, regex, return)
+#endif
+
+}  // namespace testing
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/gtest-matchers.h b/build/_deps/googletest-src/googletest/include/gtest/gtest-matchers.h
new file mode 100644
index 0000000000000000000000000000000000000000..9de6c2e10a20da85aeb95887d6095a2b8010b4a5
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/gtest-matchers.h
@@ -0,0 +1,750 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This file implements just enough of the matcher interface to allow
+// EXPECT_DEATH and friends to accept a matcher argument.
+
+// IWYU pragma: private, include "testing/base/public/gunit.h"
+// IWYU pragma: friend third_party/googletest/googlemock/.*
+// IWYU pragma: friend third_party/googletest/googletest/.*
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_MATCHERS_H_
+#define GTEST_INCLUDE_GTEST_GTEST_MATCHERS_H_
+
+#include <memory>
+#include <ostream>
+#include <string>
+#include <type_traits>
+
+#include "gtest/gtest-printers.h"
+#include "gtest/internal/gtest-internal.h"
+#include "gtest/internal/gtest-port.h"
+
+// MSVC warning C5046 is new as of VS2017 version 15.8.
+#if defined(_MSC_VER) && _MSC_VER >= 1915
+#define GTEST_MAYBE_5046_ 5046
+#else
+#define GTEST_MAYBE_5046_
+#endif
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(
+    4251 GTEST_MAYBE_5046_ /* class A needs to have dll-interface to be used by
+                              clients of class B */
+    /* Symbol involving type with internal linkage not defined */)
+
+namespace testing {
+
+// To implement a matcher Foo for type T, define:
+//   1. a class FooMatcherImpl that implements the
+//      MatcherInterface<T> interface, and
+//   2. a factory function that creates a Matcher<T> object from a
+//      FooMatcherImpl*.
+//
+// The two-level delegation design makes it possible to allow a user
+// to write "v" instead of "Eq(v)" where a Matcher is expected, which
+// is impossible if we pass matchers by pointers.  It also eases
+// ownership management as Matcher objects can now be copied like
+// plain values.
+
+// MatchResultListener is an abstract class.  Its << operator can be
+// used by a matcher to explain why a value matches or doesn't match.
+//
+class MatchResultListener {
+ public:
+  // Creates a listener object with the given underlying ostream.  The
+  // listener does not own the ostream, and does not dereference it
+  // in the constructor or destructor.
+  explicit MatchResultListener(::std::ostream* os) : stream_(os) {}
+  virtual ~MatchResultListener() = 0;  // Makes this class abstract.
+
+  // Streams x to the underlying ostream; does nothing if the ostream
+  // is NULL.
+  template <typename T>
+  MatchResultListener& operator<<(const T& x) {
+    if (stream_ != nullptr) *stream_ << x;
+    return *this;
+  }
+
+  // Returns the underlying ostream.
+  ::std::ostream* stream() { return stream_; }
+
+  // Returns true if and only if the listener is interested in an explanation
+  // of the match result.  A matcher's MatchAndExplain() method can use
+  // this information to avoid generating the explanation when no one
+  // intends to hear it.
+  bool IsInterested() const { return stream_ != nullptr; }
+
+ private:
+  ::std::ostream* const stream_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MatchResultListener);
+};
+
+inline MatchResultListener::~MatchResultListener() {
+}
+
+// An instance of a subclass of this knows how to describe itself as a
+// matcher.
+class MatcherDescriberInterface {
+ public:
+  virtual ~MatcherDescriberInterface() {}
+
+  // Describes this matcher to an ostream.  The function should print
+  // a verb phrase that describes the property a value matching this
+  // matcher should have.  The subject of the verb phrase is the value
+  // being matched.  For example, the DescribeTo() method of the Gt(7)
+  // matcher prints "is greater than 7".
+  virtual void DescribeTo(::std::ostream* os) const = 0;
+
+  // Describes the negation of this matcher to an ostream.  For
+  // example, if the description of this matcher is "is greater than
+  // 7", the negated description could be "is not greater than 7".
+  // You are not required to override this when implementing
+  // MatcherInterface, but it is highly advised so that your matcher
+  // can produce good error messages.
+  virtual void DescribeNegationTo(::std::ostream* os) const {
+    *os << "not (";
+    DescribeTo(os);
+    *os << ")";
+  }
+};
+
+// The implementation of a matcher.
+template <typename T>
+class MatcherInterface : public MatcherDescriberInterface {
+ public:
+  // Returns true if and only if the matcher matches x; also explains the
+  // match result to 'listener' if necessary (see the next paragraph), in
+  // the form of a non-restrictive relative clause ("which ...",
+  // "whose ...", etc) that describes x.  For example, the
+  // MatchAndExplain() method of the Pointee(...) matcher should
+  // generate an explanation like "which points to ...".
+  //
+  // Implementations of MatchAndExplain() should add an explanation of
+  // the match result *if and only if* they can provide additional
+  // information that's not already present (or not obvious) in the
+  // print-out of x and the matcher's description.  Whether the match
+  // succeeds is not a factor in deciding whether an explanation is
+  // needed, as sometimes the caller needs to print a failure message
+  // when the match succeeds (e.g. when the matcher is used inside
+  // Not()).
+  //
+  // For example, a "has at least 10 elements" matcher should explain
+  // what the actual element count is, regardless of the match result,
+  // as it is useful information to the reader; on the other hand, an
+  // "is empty" matcher probably only needs to explain what the actual
+  // size is when the match fails, as it's redundant to say that the
+  // size is 0 when the value is already known to be empty.
+  //
+  // You should override this method when defining a new matcher.
+  //
+  // It's the responsibility of the caller (Google Test) to guarantee
+  // that 'listener' is not NULL.  This helps to simplify a matcher's
+  // implementation when it doesn't care about the performance, as it
+  // can talk to 'listener' without checking its validity first.
+  // However, in order to implement dummy listeners efficiently,
+  // listener->stream() may be NULL.
+  virtual bool MatchAndExplain(T x, MatchResultListener* listener) const = 0;
+
+  // Inherits these methods from MatcherDescriberInterface:
+  //   virtual void DescribeTo(::std::ostream* os) const = 0;
+  //   virtual void DescribeNegationTo(::std::ostream* os) const;
+};
+
+namespace internal {
+
+// Converts a MatcherInterface<T> to a MatcherInterface<const T&>.
+template <typename T>
+class MatcherInterfaceAdapter : public MatcherInterface<const T&> {
+ public:
+  explicit MatcherInterfaceAdapter(const MatcherInterface<T>* impl)
+      : impl_(impl) {}
+  ~MatcherInterfaceAdapter() override { delete impl_; }
+
+  void DescribeTo(::std::ostream* os) const override { impl_->DescribeTo(os); }
+
+  void DescribeNegationTo(::std::ostream* os) const override {
+    impl_->DescribeNegationTo(os);
+  }
+
+  bool MatchAndExplain(const T& x,
+                       MatchResultListener* listener) const override {
+    return impl_->MatchAndExplain(x, listener);
+  }
+
+ private:
+  const MatcherInterface<T>* const impl_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MatcherInterfaceAdapter);
+};
+
+struct AnyEq {
+  template <typename A, typename B>
+  bool operator()(const A& a, const B& b) const { return a == b; }
+};
+struct AnyNe {
+  template <typename A, typename B>
+  bool operator()(const A& a, const B& b) const { return a != b; }
+};
+struct AnyLt {
+  template <typename A, typename B>
+  bool operator()(const A& a, const B& b) const { return a < b; }
+};
+struct AnyGt {
+  template <typename A, typename B>
+  bool operator()(const A& a, const B& b) const { return a > b; }
+};
+struct AnyLe {
+  template <typename A, typename B>
+  bool operator()(const A& a, const B& b) const { return a <= b; }
+};
+struct AnyGe {
+  template <typename A, typename B>
+  bool operator()(const A& a, const B& b) const { return a >= b; }
+};
+
+// A match result listener that ignores the explanation.
+class DummyMatchResultListener : public MatchResultListener {
+ public:
+  DummyMatchResultListener() : MatchResultListener(nullptr) {}
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(DummyMatchResultListener);
+};
+
+// A match result listener that forwards the explanation to a given
+// ostream.  The difference between this and MatchResultListener is
+// that the former is concrete.
+class StreamMatchResultListener : public MatchResultListener {
+ public:
+  explicit StreamMatchResultListener(::std::ostream* os)
+      : MatchResultListener(os) {}
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamMatchResultListener);
+};
+
+// An internal class for implementing Matcher<T>, which will derive
+// from it.  We put functionalities common to all Matcher<T>
+// specializations here to avoid code duplication.
+template <typename T>
+class MatcherBase {
+ public:
+  // Returns true if and only if the matcher matches x; also explains the
+  // match result to 'listener'.
+  bool MatchAndExplain(const T& x, MatchResultListener* listener) const {
+    return impl_->MatchAndExplain(x, listener);
+  }
+
+  // Returns true if and only if this matcher matches x.
+  bool Matches(const T& x) const {
+    DummyMatchResultListener dummy;
+    return MatchAndExplain(x, &dummy);
+  }
+
+  // Describes this matcher to an ostream.
+  void DescribeTo(::std::ostream* os) const { impl_->DescribeTo(os); }
+
+  // Describes the negation of this matcher to an ostream.
+  void DescribeNegationTo(::std::ostream* os) const {
+    impl_->DescribeNegationTo(os);
+  }
+
+  // Explains why x matches, or doesn't match, the matcher.
+  void ExplainMatchResultTo(const T& x, ::std::ostream* os) const {
+    StreamMatchResultListener listener(os);
+    MatchAndExplain(x, &listener);
+  }
+
+  // Returns the describer for this matcher object; retains ownership
+  // of the describer, which is only guaranteed to be alive when
+  // this matcher object is alive.
+  const MatcherDescriberInterface* GetDescriber() const {
+    return impl_.get();
+  }
+
+ protected:
+  MatcherBase() {}
+
+  // Constructs a matcher from its implementation.
+  explicit MatcherBase(const MatcherInterface<const T&>* impl) : impl_(impl) {}
+
+  template <typename U>
+  explicit MatcherBase(
+      const MatcherInterface<U>* impl,
+      typename std::enable_if<!std::is_same<U, const U&>::value>::type* =
+          nullptr)
+      : impl_(new internal::MatcherInterfaceAdapter<U>(impl)) {}
+
+  MatcherBase(const MatcherBase&) = default;
+  MatcherBase& operator=(const MatcherBase&) = default;
+  MatcherBase(MatcherBase&&) = default;
+  MatcherBase& operator=(MatcherBase&&) = default;
+
+  virtual ~MatcherBase() {}
+
+ private:
+  std::shared_ptr<const MatcherInterface<const T&>> impl_;
+};
+
+}  // namespace internal
+
+// A Matcher<T> is a copyable and IMMUTABLE (except by assignment)
+// object that can check whether a value of type T matches.  The
+// implementation of Matcher<T> is just a std::shared_ptr to const
+// MatcherInterface<T>.  Don't inherit from Matcher!
+template <typename T>
+class Matcher : public internal::MatcherBase<T> {
+ public:
+  // Constructs a null matcher.  Needed for storing Matcher objects in STL
+  // containers.  A default-constructed matcher is not yet initialized.  You
+  // cannot use it until a valid value has been assigned to it.
+  explicit Matcher() {}  // NOLINT
+
+  // Constructs a matcher from its implementation.
+  explicit Matcher(const MatcherInterface<const T&>* impl)
+      : internal::MatcherBase<T>(impl) {}
+
+  template <typename U>
+  explicit Matcher(
+      const MatcherInterface<U>* impl,
+      typename std::enable_if<!std::is_same<U, const U&>::value>::type* =
+          nullptr)
+      : internal::MatcherBase<T>(impl) {}
+
+  // Implicit constructor here allows people to write
+  // EXPECT_CALL(foo, Bar(5)) instead of EXPECT_CALL(foo, Bar(Eq(5))) sometimes
+  Matcher(T value);  // NOLINT
+};
+
+// The following two specializations allow the user to write str
+// instead of Eq(str) and "foo" instead of Eq("foo") when a std::string
+// matcher is expected.
+template <>
+class GTEST_API_ Matcher<const std::string&>
+    : public internal::MatcherBase<const std::string&> {
+ public:
+  Matcher() {}
+
+  explicit Matcher(const MatcherInterface<const std::string&>* impl)
+      : internal::MatcherBase<const std::string&>(impl) {}
+
+  // Allows the user to write str instead of Eq(str) sometimes, where
+  // str is a std::string object.
+  Matcher(const std::string& s);  // NOLINT
+
+  // Allows the user to write "foo" instead of Eq("foo") sometimes.
+  Matcher(const char* s);  // NOLINT
+};
+
+template <>
+class GTEST_API_ Matcher<std::string>
+    : public internal::MatcherBase<std::string> {
+ public:
+  Matcher() {}
+
+  explicit Matcher(const MatcherInterface<const std::string&>* impl)
+      : internal::MatcherBase<std::string>(impl) {}
+  explicit Matcher(const MatcherInterface<std::string>* impl)
+      : internal::MatcherBase<std::string>(impl) {}
+
+  // Allows the user to write str instead of Eq(str) sometimes, where
+  // str is a string object.
+  Matcher(const std::string& s);  // NOLINT
+
+  // Allows the user to write "foo" instead of Eq("foo") sometimes.
+  Matcher(const char* s);  // NOLINT
+};
+
+#if GTEST_HAS_ABSL
+// The following two specializations allow the user to write str
+// instead of Eq(str) and "foo" instead of Eq("foo") when a absl::string_view
+// matcher is expected.
+template <>
+class GTEST_API_ Matcher<const absl::string_view&>
+    : public internal::MatcherBase<const absl::string_view&> {
+ public:
+  Matcher() {}
+
+  explicit Matcher(const MatcherInterface<const absl::string_view&>* impl)
+      : internal::MatcherBase<const absl::string_view&>(impl) {}
+
+  // Allows the user to write str instead of Eq(str) sometimes, where
+  // str is a std::string object.
+  Matcher(const std::string& s);  // NOLINT
+
+  // Allows the user to write "foo" instead of Eq("foo") sometimes.
+  Matcher(const char* s);  // NOLINT
+
+  // Allows the user to pass absl::string_views directly.
+  Matcher(absl::string_view s);  // NOLINT
+};
+
+template <>
+class GTEST_API_ Matcher<absl::string_view>
+    : public internal::MatcherBase<absl::string_view> {
+ public:
+  Matcher() {}
+
+  explicit Matcher(const MatcherInterface<const absl::string_view&>* impl)
+      : internal::MatcherBase<absl::string_view>(impl) {}
+  explicit Matcher(const MatcherInterface<absl::string_view>* impl)
+      : internal::MatcherBase<absl::string_view>(impl) {}
+
+  // Allows the user to write str instead of Eq(str) sometimes, where
+  // str is a std::string object.
+  Matcher(const std::string& s);  // NOLINT
+
+  // Allows the user to write "foo" instead of Eq("foo") sometimes.
+  Matcher(const char* s);  // NOLINT
+
+  // Allows the user to pass absl::string_views directly.
+  Matcher(absl::string_view s);  // NOLINT
+};
+#endif  // GTEST_HAS_ABSL
+
+// Prints a matcher in a human-readable format.
+template <typename T>
+std::ostream& operator<<(std::ostream& os, const Matcher<T>& matcher) {
+  matcher.DescribeTo(&os);
+  return os;
+}
+
+// The PolymorphicMatcher class template makes it easy to implement a
+// polymorphic matcher (i.e. a matcher that can match values of more
+// than one type, e.g. Eq(n) and NotNull()).
+//
+// To define a polymorphic matcher, a user should provide an Impl
+// class that has a DescribeTo() method and a DescribeNegationTo()
+// method, and define a member function (or member function template)
+//
+//   bool MatchAndExplain(const Value& value,
+//                        MatchResultListener* listener) const;
+//
+// See the definition of NotNull() for a complete example.
+template <class Impl>
+class PolymorphicMatcher {
+ public:
+  explicit PolymorphicMatcher(const Impl& an_impl) : impl_(an_impl) {}
+
+  // Returns a mutable reference to the underlying matcher
+  // implementation object.
+  Impl& mutable_impl() { return impl_; }
+
+  // Returns an immutable reference to the underlying matcher
+  // implementation object.
+  const Impl& impl() const { return impl_; }
+
+  template <typename T>
+  operator Matcher<T>() const {
+    return Matcher<T>(new MonomorphicImpl<const T&>(impl_));
+  }
+
+ private:
+  template <typename T>
+  class MonomorphicImpl : public MatcherInterface<T> {
+   public:
+    explicit MonomorphicImpl(const Impl& impl) : impl_(impl) {}
+
+    virtual void DescribeTo(::std::ostream* os) const { impl_.DescribeTo(os); }
+
+    virtual void DescribeNegationTo(::std::ostream* os) const {
+      impl_.DescribeNegationTo(os);
+    }
+
+    virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
+      return impl_.MatchAndExplain(x, listener);
+    }
+
+   private:
+    const Impl impl_;
+  };
+
+  Impl impl_;
+};
+
+// Creates a matcher from its implementation.
+// DEPRECATED: Especially in the generic code, prefer:
+//   Matcher<T>(new MyMatcherImpl<const T&>(...));
+//
+// MakeMatcher may create a Matcher that accepts its argument by value, which
+// leads to unnecessary copies & lack of support for non-copyable types.
+template <typename T>
+inline Matcher<T> MakeMatcher(const MatcherInterface<T>* impl) {
+  return Matcher<T>(impl);
+}
+
+// Creates a polymorphic matcher from its implementation.  This is
+// easier to use than the PolymorphicMatcher<Impl> constructor as it
+// doesn't require you to explicitly write the template argument, e.g.
+//
+//   MakePolymorphicMatcher(foo);
+// vs
+//   PolymorphicMatcher<TypeOfFoo>(foo);
+template <class Impl>
+inline PolymorphicMatcher<Impl> MakePolymorphicMatcher(const Impl& impl) {
+  return PolymorphicMatcher<Impl>(impl);
+}
+
+namespace internal {
+// Implements a matcher that compares a given value with a
+// pre-supplied value using one of the ==, <=, <, etc, operators.  The
+// two values being compared don't have to have the same type.
+//
+// The matcher defined here is polymorphic (for example, Eq(5) can be
+// used to match an int, a short, a double, etc).  Therefore we use
+// a template type conversion operator in the implementation.
+//
+// The following template definition assumes that the Rhs parameter is
+// a "bare" type (i.e. neither 'const T' nor 'T&').
+template <typename D, typename Rhs, typename Op>
+class ComparisonBase {
+ public:
+  explicit ComparisonBase(const Rhs& rhs) : rhs_(rhs) {}
+  template <typename Lhs>
+  operator Matcher<Lhs>() const {
+    return Matcher<Lhs>(new Impl<const Lhs&>(rhs_));
+  }
+
+ private:
+  template <typename T>
+  static const T& Unwrap(const T& v) { return v; }
+  template <typename T>
+  static const T& Unwrap(std::reference_wrapper<T> v) { return v; }
+
+  template <typename Lhs, typename = Rhs>
+  class Impl : public MatcherInterface<Lhs> {
+   public:
+    explicit Impl(const Rhs& rhs) : rhs_(rhs) {}
+    bool MatchAndExplain(Lhs lhs,
+                         MatchResultListener* /* listener */) const override {
+      return Op()(lhs, Unwrap(rhs_));
+    }
+    void DescribeTo(::std::ostream* os) const override {
+      *os << D::Desc() << " ";
+      UniversalPrint(Unwrap(rhs_), os);
+    }
+    void DescribeNegationTo(::std::ostream* os) const override {
+      *os << D::NegatedDesc() <<  " ";
+      UniversalPrint(Unwrap(rhs_), os);
+    }
+
+   private:
+    Rhs rhs_;
+  };
+  Rhs rhs_;
+};
+
+template <typename Rhs>
+class EqMatcher : public ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq> {
+ public:
+  explicit EqMatcher(const Rhs& rhs)
+      : ComparisonBase<EqMatcher<Rhs>, Rhs, AnyEq>(rhs) { }
+  static const char* Desc() { return "is equal to"; }
+  static const char* NegatedDesc() { return "isn't equal to"; }
+};
+template <typename Rhs>
+class NeMatcher : public ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe> {
+ public:
+  explicit NeMatcher(const Rhs& rhs)
+      : ComparisonBase<NeMatcher<Rhs>, Rhs, AnyNe>(rhs) { }
+  static const char* Desc() { return "isn't equal to"; }
+  static const char* NegatedDesc() { return "is equal to"; }
+};
+template <typename Rhs>
+class LtMatcher : public ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt> {
+ public:
+  explicit LtMatcher(const Rhs& rhs)
+      : ComparisonBase<LtMatcher<Rhs>, Rhs, AnyLt>(rhs) { }
+  static const char* Desc() { return "is <"; }
+  static const char* NegatedDesc() { return "isn't <"; }
+};
+template <typename Rhs>
+class GtMatcher : public ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt> {
+ public:
+  explicit GtMatcher(const Rhs& rhs)
+      : ComparisonBase<GtMatcher<Rhs>, Rhs, AnyGt>(rhs) { }
+  static const char* Desc() { return "is >"; }
+  static const char* NegatedDesc() { return "isn't >"; }
+};
+template <typename Rhs>
+class LeMatcher : public ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe> {
+ public:
+  explicit LeMatcher(const Rhs& rhs)
+      : ComparisonBase<LeMatcher<Rhs>, Rhs, AnyLe>(rhs) { }
+  static const char* Desc() { return "is <="; }
+  static const char* NegatedDesc() { return "isn't <="; }
+};
+template <typename Rhs>
+class GeMatcher : public ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe> {
+ public:
+  explicit GeMatcher(const Rhs& rhs)
+      : ComparisonBase<GeMatcher<Rhs>, Rhs, AnyGe>(rhs) { }
+  static const char* Desc() { return "is >="; }
+  static const char* NegatedDesc() { return "isn't >="; }
+};
+
+// Implements polymorphic matchers MatchesRegex(regex) and
+// ContainsRegex(regex), which can be used as a Matcher<T> as long as
+// T can be converted to a string.
+class MatchesRegexMatcher {
+ public:
+  MatchesRegexMatcher(const RE* regex, bool full_match)
+      : regex_(regex), full_match_(full_match) {}
+
+#if GTEST_HAS_ABSL
+  bool MatchAndExplain(const absl::string_view& s,
+                       MatchResultListener* listener) const {
+    return MatchAndExplain(std::string(s), listener);
+  }
+#endif  // GTEST_HAS_ABSL
+
+  // Accepts pointer types, particularly:
+  //   const char*
+  //   char*
+  //   const wchar_t*
+  //   wchar_t*
+  template <typename CharType>
+  bool MatchAndExplain(CharType* s, MatchResultListener* listener) const {
+    return s != nullptr && MatchAndExplain(std::string(s), listener);
+  }
+
+  // Matches anything that can convert to std::string.
+  //
+  // This is a template, not just a plain function with const std::string&,
+  // because absl::string_view has some interfering non-explicit constructors.
+  template <class MatcheeStringType>
+  bool MatchAndExplain(const MatcheeStringType& s,
+                       MatchResultListener* /* listener */) const {
+    const std::string& s2(s);
+    return full_match_ ? RE::FullMatch(s2, *regex_)
+                       : RE::PartialMatch(s2, *regex_);
+  }
+
+  void DescribeTo(::std::ostream* os) const {
+    *os << (full_match_ ? "matches" : "contains") << " regular expression ";
+    UniversalPrinter<std::string>::Print(regex_->pattern(), os);
+  }
+
+  void DescribeNegationTo(::std::ostream* os) const {
+    *os << "doesn't " << (full_match_ ? "match" : "contain")
+        << " regular expression ";
+    UniversalPrinter<std::string>::Print(regex_->pattern(), os);
+  }
+
+ private:
+  const std::shared_ptr<const RE> regex_;
+  const bool full_match_;
+};
+}  // namespace internal
+
+// Matches a string that fully matches regular expression 'regex'.
+// The matcher takes ownership of 'regex'.
+inline PolymorphicMatcher<internal::MatchesRegexMatcher> MatchesRegex(
+    const internal::RE* regex) {
+  return MakePolymorphicMatcher(internal::MatchesRegexMatcher(regex, true));
+}
+inline PolymorphicMatcher<internal::MatchesRegexMatcher> MatchesRegex(
+    const std::string& regex) {
+  return MatchesRegex(new internal::RE(regex));
+}
+
+// Matches a string that contains regular expression 'regex'.
+// The matcher takes ownership of 'regex'.
+inline PolymorphicMatcher<internal::MatchesRegexMatcher> ContainsRegex(
+    const internal::RE* regex) {
+  return MakePolymorphicMatcher(internal::MatchesRegexMatcher(regex, false));
+}
+inline PolymorphicMatcher<internal::MatchesRegexMatcher> ContainsRegex(
+    const std::string& regex) {
+  return ContainsRegex(new internal::RE(regex));
+}
+
+// Creates a polymorphic matcher that matches anything equal to x.
+// Note: if the parameter of Eq() were declared as const T&, Eq("foo")
+// wouldn't compile.
+template <typename T>
+inline internal::EqMatcher<T> Eq(T x) { return internal::EqMatcher<T>(x); }
+
+// Constructs a Matcher<T> from a 'value' of type T.  The constructed
+// matcher matches any value that's equal to 'value'.
+template <typename T>
+Matcher<T>::Matcher(T value) { *this = Eq(value); }
+
+// Creates a monomorphic matcher that matches anything with type Lhs
+// and equal to rhs.  A user may need to use this instead of Eq(...)
+// in order to resolve an overloading ambiguity.
+//
+// TypedEq<T>(x) is just a convenient short-hand for Matcher<T>(Eq(x))
+// or Matcher<T>(x), but more readable than the latter.
+//
+// We could define similar monomorphic matchers for other comparison
+// operations (e.g. TypedLt, TypedGe, and etc), but decided not to do
+// it yet as those are used much less than Eq() in practice.  A user
+// can always write Matcher<T>(Lt(5)) to be explicit about the type,
+// for example.
+template <typename Lhs, typename Rhs>
+inline Matcher<Lhs> TypedEq(const Rhs& rhs) { return Eq(rhs); }
+
+// Creates a polymorphic matcher that matches anything >= x.
+template <typename Rhs>
+inline internal::GeMatcher<Rhs> Ge(Rhs x) {
+  return internal::GeMatcher<Rhs>(x);
+}
+
+// Creates a polymorphic matcher that matches anything > x.
+template <typename Rhs>
+inline internal::GtMatcher<Rhs> Gt(Rhs x) {
+  return internal::GtMatcher<Rhs>(x);
+}
+
+// Creates a polymorphic matcher that matches anything <= x.
+template <typename Rhs>
+inline internal::LeMatcher<Rhs> Le(Rhs x) {
+  return internal::LeMatcher<Rhs>(x);
+}
+
+// Creates a polymorphic matcher that matches anything < x.
+template <typename Rhs>
+inline internal::LtMatcher<Rhs> Lt(Rhs x) {
+  return internal::LtMatcher<Rhs>(x);
+}
+
+// Creates a polymorphic matcher that matches anything != x.
+template <typename Rhs>
+inline internal::NeMatcher<Rhs> Ne(Rhs x) {
+  return internal::NeMatcher<Rhs>(x);
+}
+}  // namespace testing
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251 5046
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_MATCHERS_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/gtest-message.h b/build/_deps/googletest-src/googletest/include/gtest/gtest-message.h
new file mode 100644
index 0000000000000000000000000000000000000000..4a80e11e6b2db017a27271002ae54c41d29b4a26
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/gtest-message.h
@@ -0,0 +1,218 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This header file defines the Message class.
+//
+// IMPORTANT NOTE: Due to limitation of the C++ language, we have to
+// leave some internal implementation details in this header file.
+// They are clearly marked by comments like this:
+//
+//   // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+//
+// Such code is NOT meant to be used by a user directly, and is subject
+// to CHANGE WITHOUT NOTICE.  Therefore DO NOT DEPEND ON IT in a user
+// program!
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_MESSAGE_H_
+#define GTEST_INCLUDE_GTEST_GTEST_MESSAGE_H_
+
+#include <limits>
+#include <memory>
+
+#include "gtest/internal/gtest-port.h"
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
+// Ensures that there is at least one operator<< in the global namespace.
+// See Message& operator<<(...) below for why.
+void operator<<(const testing::internal::Secret&, int);
+
+namespace testing {
+
+// The Message class works like an ostream repeater.
+//
+// Typical usage:
+//
+//   1. You stream a bunch of values to a Message object.
+//      It will remember the text in a stringstream.
+//   2. Then you stream the Message object to an ostream.
+//      This causes the text in the Message to be streamed
+//      to the ostream.
+//
+// For example;
+//
+//   testing::Message foo;
+//   foo << 1 << " != " << 2;
+//   std::cout << foo;
+//
+// will print "1 != 2".
+//
+// Message is not intended to be inherited from.  In particular, its
+// destructor is not virtual.
+//
+// Note that stringstream behaves differently in gcc and in MSVC.  You
+// can stream a NULL char pointer to it in the former, but not in the
+// latter (it causes an access violation if you do).  The Message
+// class hides this difference by treating a NULL char pointer as
+// "(null)".
+class GTEST_API_ Message {
+ private:
+  // The type of basic IO manipulators (endl, ends, and flush) for
+  // narrow streams.
+  typedef std::ostream& (*BasicNarrowIoManip)(std::ostream&);
+
+ public:
+  // Constructs an empty Message.
+  Message();
+
+  // Copy constructor.
+  Message(const Message& msg) : ss_(new ::std::stringstream) {  // NOLINT
+    *ss_ << msg.GetString();
+  }
+
+  // Constructs a Message from a C-string.
+  explicit Message(const char* str) : ss_(new ::std::stringstream) {
+    *ss_ << str;
+  }
+
+  // Streams a non-pointer value to this object.
+  template <typename T>
+  inline Message& operator <<(const T& val) {
+    // Some libraries overload << for STL containers.  These
+    // overloads are defined in the global namespace instead of ::std.
+    //
+    // C++'s symbol lookup rule (i.e. Koenig lookup) says that these
+    // overloads are visible in either the std namespace or the global
+    // namespace, but not other namespaces, including the testing
+    // namespace which Google Test's Message class is in.
+    //
+    // To allow STL containers (and other types that has a << operator
+    // defined in the global namespace) to be used in Google Test
+    // assertions, testing::Message must access the custom << operator
+    // from the global namespace.  With this using declaration,
+    // overloads of << defined in the global namespace and those
+    // visible via Koenig lookup are both exposed in this function.
+    using ::operator <<;
+    *ss_ << val;
+    return *this;
+  }
+
+  // Streams a pointer value to this object.
+  //
+  // This function is an overload of the previous one.  When you
+  // stream a pointer to a Message, this definition will be used as it
+  // is more specialized.  (The C++ Standard, section
+  // [temp.func.order].)  If you stream a non-pointer, then the
+  // previous definition will be used.
+  //
+  // The reason for this overload is that streaming a NULL pointer to
+  // ostream is undefined behavior.  Depending on the compiler, you
+  // may get "0", "(nil)", "(null)", or an access violation.  To
+  // ensure consistent result across compilers, we always treat NULL
+  // as "(null)".
+  template <typename T>
+  inline Message& operator <<(T* const& pointer) {  // NOLINT
+    if (pointer == nullptr) {
+      *ss_ << "(null)";
+    } else {
+      *ss_ << pointer;
+    }
+    return *this;
+  }
+
+  // Since the basic IO manipulators are overloaded for both narrow
+  // and wide streams, we have to provide this specialized definition
+  // of operator <<, even though its body is the same as the
+  // templatized version above.  Without this definition, streaming
+  // endl or other basic IO manipulators to Message will confuse the
+  // compiler.
+  Message& operator <<(BasicNarrowIoManip val) {
+    *ss_ << val;
+    return *this;
+  }
+
+  // Instead of 1/0, we want to see true/false for bool values.
+  Message& operator <<(bool b) {
+    return *this << (b ? "true" : "false");
+  }
+
+  // These two overloads allow streaming a wide C string to a Message
+  // using the UTF-8 encoding.
+  Message& operator <<(const wchar_t* wide_c_str);
+  Message& operator <<(wchar_t* wide_c_str);
+
+#if GTEST_HAS_STD_WSTRING
+  // Converts the given wide string to a narrow string using the UTF-8
+  // encoding, and streams the result to this Message object.
+  Message& operator <<(const ::std::wstring& wstr);
+#endif  // GTEST_HAS_STD_WSTRING
+
+  // Gets the text streamed to this object so far as an std::string.
+  // Each '\0' character in the buffer is replaced with "\\0".
+  //
+  // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+  std::string GetString() const;
+
+ private:
+  // We'll hold the text streamed to this object here.
+  const std::unique_ptr< ::std::stringstream> ss_;
+
+  // We declare (but don't implement) this to prevent the compiler
+  // from implementing the assignment operator.
+  void operator=(const Message&);
+};
+
+// Streams a Message to an ostream.
+inline std::ostream& operator <<(std::ostream& os, const Message& sb) {
+  return os << sb.GetString();
+}
+
+namespace internal {
+
+// Converts a streamable value to an std::string.  A NULL pointer is
+// converted to "(null)".  When the input value is a ::string,
+// ::std::string, ::wstring, or ::std::wstring object, each NUL
+// character in it is replaced with "\\0".
+template <typename T>
+std::string StreamableToString(const T& streamable) {
+  return (Message() << streamable).GetString();
+}
+
+}  // namespace internal
+}  // namespace testing
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_MESSAGE_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/gtest-param-test.h b/build/_deps/googletest-src/googletest/include/gtest/gtest-param-test.h
new file mode 100644
index 0000000000000000000000000000000000000000..c2e6eae3d8326e5553598c65ae85a4ed085281e0
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/gtest-param-test.h
@@ -0,0 +1,503 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Macros and functions for implementing parameterized tests
+// in Google C++ Testing and Mocking Framework (Google Test)
+//
+// This file is generated by a SCRIPT.  DO NOT EDIT BY HAND!
+//
+// GOOGLETEST_CM0001 DO NOT DELETE
+#ifndef GTEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_
+#define GTEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_
+
+
+// Value-parameterized tests allow you to test your code with different
+// parameters without writing multiple copies of the same test.
+//
+// Here is how you use value-parameterized tests:
+
+#if 0
+
+// To write value-parameterized tests, first you should define a fixture
+// class. It is usually derived from testing::TestWithParam<T> (see below for
+// another inheritance scheme that's sometimes useful in more complicated
+// class hierarchies), where the type of your parameter values.
+// TestWithParam<T> is itself derived from testing::Test. T can be any
+// copyable type. If it's a raw pointer, you are responsible for managing the
+// lifespan of the pointed values.
+
+class FooTest : public ::testing::TestWithParam<const char*> {
+  // You can implement all the usual class fixture members here.
+};
+
+// Then, use the TEST_P macro to define as many parameterized tests
+// for this fixture as you want. The _P suffix is for "parameterized"
+// or "pattern", whichever you prefer to think.
+
+TEST_P(FooTest, DoesBlah) {
+  // Inside a test, access the test parameter with the GetParam() method
+  // of the TestWithParam<T> class:
+  EXPECT_TRUE(foo.Blah(GetParam()));
+  ...
+}
+
+TEST_P(FooTest, HasBlahBlah) {
+  ...
+}
+
+// Finally, you can use INSTANTIATE_TEST_SUITE_P to instantiate the test
+// case with any set of parameters you want. Google Test defines a number
+// of functions for generating test parameters. They return what we call
+// (surprise!) parameter generators. Here is a summary of them, which
+// are all in the testing namespace:
+//
+//
+//  Range(begin, end [, step]) - Yields values {begin, begin+step,
+//                               begin+step+step, ...}. The values do not
+//                               include end. step defaults to 1.
+//  Values(v1, v2, ..., vN)    - Yields values {v1, v2, ..., vN}.
+//  ValuesIn(container)        - Yields values from a C-style array, an STL
+//  ValuesIn(begin,end)          container, or an iterator range [begin, end).
+//  Bool()                     - Yields sequence {false, true}.
+//  Combine(g1, g2, ..., gN)   - Yields all combinations (the Cartesian product
+//                               for the math savvy) of the values generated
+//                               by the N generators.
+//
+// For more details, see comments at the definitions of these functions below
+// in this file.
+//
+// The following statement will instantiate tests from the FooTest test suite
+// each with parameter values "meeny", "miny", and "moe".
+
+INSTANTIATE_TEST_SUITE_P(InstantiationName,
+                         FooTest,
+                         Values("meeny", "miny", "moe"));
+
+// To distinguish different instances of the pattern, (yes, you
+// can instantiate it more than once) the first argument to the
+// INSTANTIATE_TEST_SUITE_P macro is a prefix that will be added to the
+// actual test suite name. Remember to pick unique prefixes for different
+// instantiations. The tests from the instantiation above will have
+// these names:
+//
+//    * InstantiationName/FooTest.DoesBlah/0 for "meeny"
+//    * InstantiationName/FooTest.DoesBlah/1 for "miny"
+//    * InstantiationName/FooTest.DoesBlah/2 for "moe"
+//    * InstantiationName/FooTest.HasBlahBlah/0 for "meeny"
+//    * InstantiationName/FooTest.HasBlahBlah/1 for "miny"
+//    * InstantiationName/FooTest.HasBlahBlah/2 for "moe"
+//
+// You can use these names in --gtest_filter.
+//
+// This statement will instantiate all tests from FooTest again, each
+// with parameter values "cat" and "dog":
+
+const char* pets[] = {"cat", "dog"};
+INSTANTIATE_TEST_SUITE_P(AnotherInstantiationName, FooTest, ValuesIn(pets));
+
+// The tests from the instantiation above will have these names:
+//
+//    * AnotherInstantiationName/FooTest.DoesBlah/0 for "cat"
+//    * AnotherInstantiationName/FooTest.DoesBlah/1 for "dog"
+//    * AnotherInstantiationName/FooTest.HasBlahBlah/0 for "cat"
+//    * AnotherInstantiationName/FooTest.HasBlahBlah/1 for "dog"
+//
+// Please note that INSTANTIATE_TEST_SUITE_P will instantiate all tests
+// in the given test suite, whether their definitions come before or
+// AFTER the INSTANTIATE_TEST_SUITE_P statement.
+//
+// Please also note that generator expressions (including parameters to the
+// generators) are evaluated in InitGoogleTest(), after main() has started.
+// This allows the user on one hand, to adjust generator parameters in order
+// to dynamically determine a set of tests to run and on the other hand,
+// give the user a chance to inspect the generated tests with Google Test
+// reflection API before RUN_ALL_TESTS() is executed.
+//
+// You can see samples/sample7_unittest.cc and samples/sample8_unittest.cc
+// for more examples.
+//
+// In the future, we plan to publish the API for defining new parameter
+// generators. But for now this interface remains part of the internal
+// implementation and is subject to change.
+//
+//
+// A parameterized test fixture must be derived from testing::Test and from
+// testing::WithParamInterface<T>, where T is the type of the parameter
+// values. Inheriting from TestWithParam<T> satisfies that requirement because
+// TestWithParam<T> inherits from both Test and WithParamInterface. In more
+// complicated hierarchies, however, it is occasionally useful to inherit
+// separately from Test and WithParamInterface. For example:
+
+class BaseTest : public ::testing::Test {
+  // You can inherit all the usual members for a non-parameterized test
+  // fixture here.
+};
+
+class DerivedTest : public BaseTest, public ::testing::WithParamInterface<int> {
+  // The usual test fixture members go here too.
+};
+
+TEST_F(BaseTest, HasFoo) {
+  // This is an ordinary non-parameterized test.
+}
+
+TEST_P(DerivedTest, DoesBlah) {
+  // GetParam works just the same here as if you inherit from TestWithParam.
+  EXPECT_TRUE(foo.Blah(GetParam()));
+}
+
+#endif  // 0
+
+#include <iterator>
+#include <utility>
+
+#include "gtest/internal/gtest-internal.h"
+#include "gtest/internal/gtest-param-util.h"
+#include "gtest/internal/gtest-port.h"
+
+namespace testing {
+
+// Functions producing parameter generators.
+//
+// Google Test uses these generators to produce parameters for value-
+// parameterized tests. When a parameterized test suite is instantiated
+// with a particular generator, Google Test creates and runs tests
+// for each element in the sequence produced by the generator.
+//
+// In the following sample, tests from test suite FooTest are instantiated
+// each three times with parameter values 3, 5, and 8:
+//
+// class FooTest : public TestWithParam<int> { ... };
+//
+// TEST_P(FooTest, TestThis) {
+// }
+// TEST_P(FooTest, TestThat) {
+// }
+// INSTANTIATE_TEST_SUITE_P(TestSequence, FooTest, Values(3, 5, 8));
+//
+
+// Range() returns generators providing sequences of values in a range.
+//
+// Synopsis:
+// Range(start, end)
+//   - returns a generator producing a sequence of values {start, start+1,
+//     start+2, ..., }.
+// Range(start, end, step)
+//   - returns a generator producing a sequence of values {start, start+step,
+//     start+step+step, ..., }.
+// Notes:
+//   * The generated sequences never include end. For example, Range(1, 5)
+//     returns a generator producing a sequence {1, 2, 3, 4}. Range(1, 9, 2)
+//     returns a generator producing {1, 3, 5, 7}.
+//   * start and end must have the same type. That type may be any integral or
+//     floating-point type or a user defined type satisfying these conditions:
+//     * It must be assignable (have operator=() defined).
+//     * It must have operator+() (operator+(int-compatible type) for
+//       two-operand version).
+//     * It must have operator<() defined.
+//     Elements in the resulting sequences will also have that type.
+//   * Condition start < end must be satisfied in order for resulting sequences
+//     to contain any elements.
+//
+template <typename T, typename IncrementT>
+internal::ParamGenerator<T> Range(T start, T end, IncrementT step) {
+  return internal::ParamGenerator<T>(
+      new internal::RangeGenerator<T, IncrementT>(start, end, step));
+}
+
+template <typename T>
+internal::ParamGenerator<T> Range(T start, T end) {
+  return Range(start, end, 1);
+}
+
+// ValuesIn() function allows generation of tests with parameters coming from
+// a container.
+//
+// Synopsis:
+// ValuesIn(const T (&array)[N])
+//   - returns a generator producing sequences with elements from
+//     a C-style array.
+// ValuesIn(const Container& container)
+//   - returns a generator producing sequences with elements from
+//     an STL-style container.
+// ValuesIn(Iterator begin, Iterator end)
+//   - returns a generator producing sequences with elements from
+//     a range [begin, end) defined by a pair of STL-style iterators. These
+//     iterators can also be plain C pointers.
+//
+// Please note that ValuesIn copies the values from the containers
+// passed in and keeps them to generate tests in RUN_ALL_TESTS().
+//
+// Examples:
+//
+// This instantiates tests from test suite StringTest
+// each with C-string values of "foo", "bar", and "baz":
+//
+// const char* strings[] = {"foo", "bar", "baz"};
+// INSTANTIATE_TEST_SUITE_P(StringSequence, StringTest, ValuesIn(strings));
+//
+// This instantiates tests from test suite StlStringTest
+// each with STL strings with values "a" and "b":
+//
+// ::std::vector< ::std::string> GetParameterStrings() {
+//   ::std::vector< ::std::string> v;
+//   v.push_back("a");
+//   v.push_back("b");
+//   return v;
+// }
+//
+// INSTANTIATE_TEST_SUITE_P(CharSequence,
+//                          StlStringTest,
+//                          ValuesIn(GetParameterStrings()));
+//
+//
+// This will also instantiate tests from CharTest
+// each with parameter values 'a' and 'b':
+//
+// ::std::list<char> GetParameterChars() {
+//   ::std::list<char> list;
+//   list.push_back('a');
+//   list.push_back('b');
+//   return list;
+// }
+// ::std::list<char> l = GetParameterChars();
+// INSTANTIATE_TEST_SUITE_P(CharSequence2,
+//                          CharTest,
+//                          ValuesIn(l.begin(), l.end()));
+//
+template <typename ForwardIterator>
+internal::ParamGenerator<
+    typename std::iterator_traits<ForwardIterator>::value_type>
+ValuesIn(ForwardIterator begin, ForwardIterator end) {
+  typedef typename std::iterator_traits<ForwardIterator>::value_type ParamType;
+  return internal::ParamGenerator<ParamType>(
+      new internal::ValuesInIteratorRangeGenerator<ParamType>(begin, end));
+}
+
+template <typename T, size_t N>
+internal::ParamGenerator<T> ValuesIn(const T (&array)[N]) {
+  return ValuesIn(array, array + N);
+}
+
+template <class Container>
+internal::ParamGenerator<typename Container::value_type> ValuesIn(
+    const Container& container) {
+  return ValuesIn(container.begin(), container.end());
+}
+
+// Values() allows generating tests from explicitly specified list of
+// parameters.
+//
+// Synopsis:
+// Values(T v1, T v2, ..., T vN)
+//   - returns a generator producing sequences with elements v1, v2, ..., vN.
+//
+// For example, this instantiates tests from test suite BarTest each
+// with values "one", "two", and "three":
+//
+// INSTANTIATE_TEST_SUITE_P(NumSequence,
+//                          BarTest,
+//                          Values("one", "two", "three"));
+//
+// This instantiates tests from test suite BazTest each with values 1, 2, 3.5.
+// The exact type of values will depend on the type of parameter in BazTest.
+//
+// INSTANTIATE_TEST_SUITE_P(FloatingNumbers, BazTest, Values(1, 2, 3.5));
+//
+//
+template <typename... T>
+internal::ValueArray<T...> Values(T... v) {
+  return internal::ValueArray<T...>(std::move(v)...);
+}
+
+// Bool() allows generating tests with parameters in a set of (false, true).
+//
+// Synopsis:
+// Bool()
+//   - returns a generator producing sequences with elements {false, true}.
+//
+// It is useful when testing code that depends on Boolean flags. Combinations
+// of multiple flags can be tested when several Bool()'s are combined using
+// Combine() function.
+//
+// In the following example all tests in the test suite FlagDependentTest
+// will be instantiated twice with parameters false and true.
+//
+// class FlagDependentTest : public testing::TestWithParam<bool> {
+//   virtual void SetUp() {
+//     external_flag = GetParam();
+//   }
+// }
+// INSTANTIATE_TEST_SUITE_P(BoolSequence, FlagDependentTest, Bool());
+//
+inline internal::ParamGenerator<bool> Bool() {
+  return Values(false, true);
+}
+
+// Combine() allows the user to combine two or more sequences to produce
+// values of a Cartesian product of those sequences' elements.
+//
+// Synopsis:
+// Combine(gen1, gen2, ..., genN)
+//   - returns a generator producing sequences with elements coming from
+//     the Cartesian product of elements from the sequences generated by
+//     gen1, gen2, ..., genN. The sequence elements will have a type of
+//     std::tuple<T1, T2, ..., TN> where T1, T2, ..., TN are the types
+//     of elements from sequences produces by gen1, gen2, ..., genN.
+//
+// Combine can have up to 10 arguments.
+//
+// Example:
+//
+// This will instantiate tests in test suite AnimalTest each one with
+// the parameter values tuple("cat", BLACK), tuple("cat", WHITE),
+// tuple("dog", BLACK), and tuple("dog", WHITE):
+//
+// enum Color { BLACK, GRAY, WHITE };
+// class AnimalTest
+//     : public testing::TestWithParam<std::tuple<const char*, Color> > {...};
+//
+// TEST_P(AnimalTest, AnimalLooksNice) {...}
+//
+// INSTANTIATE_TEST_SUITE_P(AnimalVariations, AnimalTest,
+//                          Combine(Values("cat", "dog"),
+//                                  Values(BLACK, WHITE)));
+//
+// This will instantiate tests in FlagDependentTest with all variations of two
+// Boolean flags:
+//
+// class FlagDependentTest
+//     : public testing::TestWithParam<std::tuple<bool, bool> > {
+//   virtual void SetUp() {
+//     // Assigns external_flag_1 and external_flag_2 values from the tuple.
+//     std::tie(external_flag_1, external_flag_2) = GetParam();
+//   }
+// };
+//
+// TEST_P(FlagDependentTest, TestFeature1) {
+//   // Test your code using external_flag_1 and external_flag_2 here.
+// }
+// INSTANTIATE_TEST_SUITE_P(TwoBoolSequence, FlagDependentTest,
+//                          Combine(Bool(), Bool()));
+//
+template <typename... Generator>
+internal::CartesianProductHolder<Generator...> Combine(const Generator&... g) {
+  return internal::CartesianProductHolder<Generator...>(g...);
+}
+
+#define TEST_P(test_suite_name, test_name)                                     \
+  class GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)                     \
+      : public test_suite_name {                                               \
+   public:                                                                     \
+    GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)() {}                    \
+    virtual void TestBody();                                                   \
+                                                                               \
+   private:                                                                    \
+    static int AddToRegistry() {                                               \
+      ::testing::UnitTest::GetInstance()                                       \
+          ->parameterized_test_registry()                                      \
+          .GetTestSuitePatternHolder<test_suite_name>(                         \
+              #test_suite_name,                                                \
+              ::testing::internal::CodeLocation(__FILE__, __LINE__))           \
+          ->AddTestPattern(                                                    \
+              GTEST_STRINGIFY_(test_suite_name), GTEST_STRINGIFY_(test_name),  \
+              new ::testing::internal::TestMetaFactory<GTEST_TEST_CLASS_NAME_( \
+                  test_suite_name, test_name)>());                             \
+      return 0;                                                                \
+    }                                                                          \
+    static int gtest_registering_dummy_ GTEST_ATTRIBUTE_UNUSED_;               \
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(GTEST_TEST_CLASS_NAME_(test_suite_name,    \
+                                                           test_name));        \
+  };                                                                           \
+  int GTEST_TEST_CLASS_NAME_(test_suite_name,                                  \
+                             test_name)::gtest_registering_dummy_ =            \
+      GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)::AddToRegistry();     \
+  void GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)::TestBody()
+
+// The last argument to INSTANTIATE_TEST_SUITE_P allows the user to specify
+// generator and an optional function or functor that generates custom test name
+// suffixes based on the test parameters. Such a function or functor should
+// accept one argument of type testing::TestParamInfo<class ParamType>, and
+// return std::string.
+//
+// testing::PrintToStringParamName is a builtin test suffix generator that
+// returns the value of testing::PrintToString(GetParam()).
+//
+// Note: test names must be non-empty, unique, and may only contain ASCII
+// alphanumeric characters or underscore. Because PrintToString adds quotes
+// to std::string and C strings, it won't work for these types.
+
+#define GTEST_EXPAND_(arg) arg
+#define GTEST_GET_FIRST_(first, ...) first
+#define GTEST_GET_SECOND_(first, second, ...) second
+
+#define INSTANTIATE_TEST_SUITE_P(prefix, test_suite_name, ...)                \
+  static ::testing::internal::ParamGenerator<test_suite_name::ParamType>      \
+      gtest_##prefix##test_suite_name##_EvalGenerator_() {                    \
+    return GTEST_EXPAND_(GTEST_GET_FIRST_(__VA_ARGS__, DUMMY_PARAM_));        \
+  }                                                                           \
+  static ::std::string gtest_##prefix##test_suite_name##_EvalGenerateName_(   \
+      const ::testing::TestParamInfo<test_suite_name::ParamType>& info) {     \
+    if (::testing::internal::AlwaysFalse()) {                                 \
+      ::testing::internal::TestNotEmpty(GTEST_EXPAND_(GTEST_GET_SECOND_(      \
+          __VA_ARGS__,                                                        \
+          ::testing::internal::DefaultParamName<test_suite_name::ParamType>,  \
+          DUMMY_PARAM_)));                                                    \
+      auto t = std::make_tuple(__VA_ARGS__);                                  \
+      static_assert(std::tuple_size<decltype(t)>::value <= 2,                 \
+                    "Too Many Args!");                                        \
+    }                                                                         \
+    return ((GTEST_EXPAND_(GTEST_GET_SECOND_(                                 \
+        __VA_ARGS__,                                                          \
+        ::testing::internal::DefaultParamName<test_suite_name::ParamType>,    \
+        DUMMY_PARAM_))))(info);                                               \
+  }                                                                           \
+  static int gtest_##prefix##test_suite_name##_dummy_                         \
+      GTEST_ATTRIBUTE_UNUSED_ =                                               \
+          ::testing::UnitTest::GetInstance()                                  \
+              ->parameterized_test_registry()                                 \
+              .GetTestSuitePatternHolder<test_suite_name>(                    \
+                  #test_suite_name,                                           \
+                  ::testing::internal::CodeLocation(__FILE__, __LINE__))      \
+              ->AddTestSuiteInstantiation(                                    \
+                  #prefix, &gtest_##prefix##test_suite_name##_EvalGenerator_, \
+                  &gtest_##prefix##test_suite_name##_EvalGenerateName_,       \
+                  __FILE__, __LINE__)
+
+// Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+#define INSTANTIATE_TEST_CASE_P                                            \
+  static_assert(::testing::internal::InstantiateTestCase_P_IsDeprecated(), \
+                "");                                                       \
+  INSTANTIATE_TEST_SUITE_P
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+}  // namespace testing
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_PARAM_TEST_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/gtest-printers.h b/build/_deps/googletest-src/googletest/include/gtest/gtest-printers.h
new file mode 100644
index 0000000000000000000000000000000000000000..56a05450ef5e4ce13f5915c7acd5ef3e1a3655a9
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/gtest-printers.h
@@ -0,0 +1,928 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Test - The Google C++ Testing and Mocking Framework
+//
+// This file implements a universal value printer that can print a
+// value of any type T:
+//
+//   void ::testing::internal::UniversalPrinter<T>::Print(value, ostream_ptr);
+//
+// A user can teach this function how to print a class type T by
+// defining either operator<<() or PrintTo() in the namespace that
+// defines T.  More specifically, the FIRST defined function in the
+// following list will be used (assuming T is defined in namespace
+// foo):
+//
+//   1. foo::PrintTo(const T&, ostream*)
+//   2. operator<<(ostream&, const T&) defined in either foo or the
+//      global namespace.
+//
+// However if T is an STL-style container then it is printed element-wise
+// unless foo::PrintTo(const T&, ostream*) is defined. Note that
+// operator<<() is ignored for container types.
+//
+// If none of the above is defined, it will print the debug string of
+// the value if it is a protocol buffer, or print the raw bytes in the
+// value otherwise.
+//
+// To aid debugging: when T is a reference type, the address of the
+// value is also printed; when T is a (const) char pointer, both the
+// pointer value and the NUL-terminated string it points to are
+// printed.
+//
+// We also provide some convenient wrappers:
+//
+//   // Prints a value to a string.  For a (const or not) char
+//   // pointer, the NUL-terminated string (but not the pointer) is
+//   // printed.
+//   std::string ::testing::PrintToString(const T& value);
+//
+//   // Prints a value tersely: for a reference type, the referenced
+//   // value (but not the address) is printed; for a (const or not) char
+//   // pointer, the NUL-terminated string (but not the pointer) is
+//   // printed.
+//   void ::testing::internal::UniversalTersePrint(const T& value, ostream*);
+//
+//   // Prints value using the type inferred by the compiler.  The difference
+//   // from UniversalTersePrint() is that this function prints both the
+//   // pointer and the NUL-terminated string for a (const or not) char pointer.
+//   void ::testing::internal::UniversalPrint(const T& value, ostream*);
+//
+//   // Prints the fields of a tuple tersely to a string vector, one
+//   // element for each field. Tuple support must be enabled in
+//   // gtest-port.h.
+//   std::vector<string> UniversalTersePrintTupleFieldsToStrings(
+//       const Tuple& value);
+//
+// Known limitation:
+//
+// The print primitives print the elements of an STL-style container
+// using the compiler-inferred type of *iter where iter is a
+// const_iterator of the container.  When const_iterator is an input
+// iterator but not a forward iterator, this inferred type may not
+// match value_type, and the print output may be incorrect.  In
+// practice, this is rarely a problem as for most containers
+// const_iterator is a forward iterator.  We'll fix this if there's an
+// actual need for it.  Note that this fix cannot rely on value_type
+// being defined as many user-defined container types don't have
+// value_type.
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
+#define GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
+
+#include <functional>
+#include <ostream>  // NOLINT
+#include <sstream>
+#include <string>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+#include <vector>
+#include "gtest/internal/gtest-internal.h"
+#include "gtest/internal/gtest-port.h"
+
+#if GTEST_HAS_ABSL
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+#include "absl/types/variant.h"
+#endif  // GTEST_HAS_ABSL
+
+namespace testing {
+
+// Definitions in the 'internal' and 'internal2' name spaces are
+// subject to change without notice.  DO NOT USE THEM IN USER CODE!
+namespace internal2 {
+
+// Prints the given number of bytes in the given object to the given
+// ostream.
+GTEST_API_ void PrintBytesInObjectTo(const unsigned char* obj_bytes,
+                                     size_t count,
+                                     ::std::ostream* os);
+
+// For selecting which printer to use when a given type has neither <<
+// nor PrintTo().
+enum TypeKind {
+  kProtobuf,              // a protobuf type
+  kConvertibleToInteger,  // a type implicitly convertible to BiggestInt
+                          // (e.g. a named or unnamed enum type)
+#if GTEST_HAS_ABSL
+  kConvertibleToStringView,  // a type implicitly convertible to
+                             // absl::string_view
+#endif
+  kOtherType  // anything else
+};
+
+// TypeWithoutFormatter<T, kTypeKind>::PrintValue(value, os) is called
+// by the universal printer to print a value of type T when neither
+// operator<< nor PrintTo() is defined for T, where kTypeKind is the
+// "kind" of T as defined by enum TypeKind.
+template <typename T, TypeKind kTypeKind>
+class TypeWithoutFormatter {
+ public:
+  // This default version is called when kTypeKind is kOtherType.
+  static void PrintValue(const T& value, ::std::ostream* os) {
+    PrintBytesInObjectTo(
+        static_cast<const unsigned char*>(
+            reinterpret_cast<const void*>(std::addressof(value))),
+        sizeof(value), os);
+  }
+};
+
+// We print a protobuf using its ShortDebugString() when the string
+// doesn't exceed this many characters; otherwise we print it using
+// DebugString() for better readability.
+const size_t kProtobufOneLinerMaxLength = 50;
+
+template <typename T>
+class TypeWithoutFormatter<T, kProtobuf> {
+ public:
+  static void PrintValue(const T& value, ::std::ostream* os) {
+    std::string pretty_str = value.ShortDebugString();
+    if (pretty_str.length() > kProtobufOneLinerMaxLength) {
+      pretty_str = "\n" + value.DebugString();
+    }
+    *os << ("<" + pretty_str + ">");
+  }
+};
+
+template <typename T>
+class TypeWithoutFormatter<T, kConvertibleToInteger> {
+ public:
+  // Since T has no << operator or PrintTo() but can be implicitly
+  // converted to BiggestInt, we print it as a BiggestInt.
+  //
+  // Most likely T is an enum type (either named or unnamed), in which
+  // case printing it as an integer is the desired behavior.  In case
+  // T is not an enum, printing it as an integer is the best we can do
+  // given that it has no user-defined printer.
+  static void PrintValue(const T& value, ::std::ostream* os) {
+    const internal::BiggestInt kBigInt = value;
+    *os << kBigInt;
+  }
+};
+
+#if GTEST_HAS_ABSL
+template <typename T>
+class TypeWithoutFormatter<T, kConvertibleToStringView> {
+ public:
+  // Since T has neither operator<< nor PrintTo() but can be implicitly
+  // converted to absl::string_view, we print it as a absl::string_view.
+  //
+  // Note: the implementation is further below, as it depends on
+  // internal::PrintTo symbol which is defined later in the file.
+  static void PrintValue(const T& value, ::std::ostream* os);
+};
+#endif
+
+// Prints the given value to the given ostream.  If the value is a
+// protocol message, its debug string is printed; if it's an enum or
+// of a type implicitly convertible to BiggestInt, it's printed as an
+// integer; otherwise the bytes in the value are printed.  This is
+// what UniversalPrinter<T>::Print() does when it knows nothing about
+// type T and T has neither << operator nor PrintTo().
+//
+// A user can override this behavior for a class type Foo by defining
+// a << operator in the namespace where Foo is defined.
+//
+// We put this operator in namespace 'internal2' instead of 'internal'
+// to simplify the implementation, as much code in 'internal' needs to
+// use << in STL, which would conflict with our own << were it defined
+// in 'internal'.
+//
+// Note that this operator<< takes a generic std::basic_ostream<Char,
+// CharTraits> type instead of the more restricted std::ostream.  If
+// we define it to take an std::ostream instead, we'll get an
+// "ambiguous overloads" compiler error when trying to print a type
+// Foo that supports streaming to std::basic_ostream<Char,
+// CharTraits>, as the compiler cannot tell whether
+// operator<<(std::ostream&, const T&) or
+// operator<<(std::basic_stream<Char, CharTraits>, const Foo&) is more
+// specific.
+template <typename Char, typename CharTraits, typename T>
+::std::basic_ostream<Char, CharTraits>& operator<<(
+    ::std::basic_ostream<Char, CharTraits>& os, const T& x) {
+  TypeWithoutFormatter<T, (internal::IsAProtocolMessage<T>::value
+                               ? kProtobuf
+                               : std::is_convertible<
+                                     const T&, internal::BiggestInt>::value
+                                     ? kConvertibleToInteger
+                                     :
+#if GTEST_HAS_ABSL
+                                     std::is_convertible<
+                                         const T&, absl::string_view>::value
+                                         ? kConvertibleToStringView
+                                         :
+#endif
+                                         kOtherType)>::PrintValue(x, &os);
+  return os;
+}
+
+}  // namespace internal2
+}  // namespace testing
+
+// This namespace MUST NOT BE NESTED IN ::testing, or the name look-up
+// magic needed for implementing UniversalPrinter won't work.
+namespace testing_internal {
+
+// Used to print a value that is not an STL-style container when the
+// user doesn't define PrintTo() for it.
+template <typename T>
+void DefaultPrintNonContainerTo(const T& value, ::std::ostream* os) {
+  // With the following statement, during unqualified name lookup,
+  // testing::internal2::operator<< appears as if it was declared in
+  // the nearest enclosing namespace that contains both
+  // ::testing_internal and ::testing::internal2, i.e. the global
+  // namespace.  For more details, refer to the C++ Standard section
+  // 7.3.4-1 [namespace.udir].  This allows us to fall back onto
+  // testing::internal2::operator<< in case T doesn't come with a <<
+  // operator.
+  //
+  // We cannot write 'using ::testing::internal2::operator<<;', which
+  // gcc 3.3 fails to compile due to a compiler bug.
+  using namespace ::testing::internal2;  // NOLINT
+
+  // Assuming T is defined in namespace foo, in the next statement,
+  // the compiler will consider all of:
+  //
+  //   1. foo::operator<< (thanks to Koenig look-up),
+  //   2. ::operator<< (as the current namespace is enclosed in ::),
+  //   3. testing::internal2::operator<< (thanks to the using statement above).
+  //
+  // The operator<< whose type matches T best will be picked.
+  //
+  // We deliberately allow #2 to be a candidate, as sometimes it's
+  // impossible to define #1 (e.g. when foo is ::std, defining
+  // anything in it is undefined behavior unless you are a compiler
+  // vendor.).
+  *os << value;
+}
+
+}  // namespace testing_internal
+
+namespace testing {
+namespace internal {
+
+// FormatForComparison<ToPrint, OtherOperand>::Format(value) formats a
+// value of type ToPrint that is an operand of a comparison assertion
+// (e.g. ASSERT_EQ).  OtherOperand is the type of the other operand in
+// the comparison, and is used to help determine the best way to
+// format the value.  In particular, when the value is a C string
+// (char pointer) and the other operand is an STL string object, we
+// want to format the C string as a string, since we know it is
+// compared by value with the string object.  If the value is a char
+// pointer but the other operand is not an STL string object, we don't
+// know whether the pointer is supposed to point to a NUL-terminated
+// string, and thus want to print it as a pointer to be safe.
+//
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+
+// The default case.
+template <typename ToPrint, typename OtherOperand>
+class FormatForComparison {
+ public:
+  static ::std::string Format(const ToPrint& value) {
+    return ::testing::PrintToString(value);
+  }
+};
+
+// Array.
+template <typename ToPrint, size_t N, typename OtherOperand>
+class FormatForComparison<ToPrint[N], OtherOperand> {
+ public:
+  static ::std::string Format(const ToPrint* value) {
+    return FormatForComparison<const ToPrint*, OtherOperand>::Format(value);
+  }
+};
+
+// By default, print C string as pointers to be safe, as we don't know
+// whether they actually point to a NUL-terminated string.
+
+#define GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(CharType)                \
+  template <typename OtherOperand>                                      \
+  class FormatForComparison<CharType*, OtherOperand> {                  \
+   public:                                                              \
+    static ::std::string Format(CharType* value) {                      \
+      return ::testing::PrintToString(static_cast<const void*>(value)); \
+    }                                                                   \
+  }
+
+GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(char);
+GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(const char);
+GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(wchar_t);
+GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_(const wchar_t);
+
+#undef GTEST_IMPL_FORMAT_C_STRING_AS_POINTER_
+
+// If a C string is compared with an STL string object, we know it's meant
+// to point to a NUL-terminated string, and thus can print it as a string.
+
+#define GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(CharType, OtherStringType) \
+  template <>                                                           \
+  class FormatForComparison<CharType*, OtherStringType> {               \
+   public:                                                              \
+    static ::std::string Format(CharType* value) {                      \
+      return ::testing::PrintToString(value);                           \
+    }                                                                   \
+  }
+
+GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(char, ::std::string);
+GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const char, ::std::string);
+
+#if GTEST_HAS_STD_WSTRING
+GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(wchar_t, ::std::wstring);
+GTEST_IMPL_FORMAT_C_STRING_AS_STRING_(const wchar_t, ::std::wstring);
+#endif
+
+#undef GTEST_IMPL_FORMAT_C_STRING_AS_STRING_
+
+// Formats a comparison assertion (e.g. ASSERT_EQ, EXPECT_LT, and etc)
+// operand to be used in a failure message.  The type (but not value)
+// of the other operand may affect the format.  This allows us to
+// print a char* as a raw pointer when it is compared against another
+// char* or void*, and print it as a C string when it is compared
+// against an std::string object, for example.
+//
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+template <typename T1, typename T2>
+std::string FormatForComparisonFailureMessage(
+    const T1& value, const T2& /* other_operand */) {
+  return FormatForComparison<T1, T2>::Format(value);
+}
+
+// UniversalPrinter<T>::Print(value, ostream_ptr) prints the given
+// value to the given ostream.  The caller must ensure that
+// 'ostream_ptr' is not NULL, or the behavior is undefined.
+//
+// We define UniversalPrinter as a class template (as opposed to a
+// function template), as we need to partially specialize it for
+// reference types, which cannot be done with function templates.
+template <typename T>
+class UniversalPrinter;
+
+template <typename T>
+void UniversalPrint(const T& value, ::std::ostream* os);
+
+enum DefaultPrinterType {
+  kPrintContainer,
+  kPrintPointer,
+  kPrintFunctionPointer,
+  kPrintOther,
+};
+template <DefaultPrinterType type> struct WrapPrinterType {};
+
+// Used to print an STL-style container when the user doesn't define
+// a PrintTo() for it.
+template <typename C>
+void DefaultPrintTo(WrapPrinterType<kPrintContainer> /* dummy */,
+                    const C& container, ::std::ostream* os) {
+  const size_t kMaxCount = 32;  // The maximum number of elements to print.
+  *os << '{';
+  size_t count = 0;
+  for (typename C::const_iterator it = container.begin();
+       it != container.end(); ++it, ++count) {
+    if (count > 0) {
+      *os << ',';
+      if (count == kMaxCount) {  // Enough has been printed.
+        *os << " ...";
+        break;
+      }
+    }
+    *os << ' ';
+    // We cannot call PrintTo(*it, os) here as PrintTo() doesn't
+    // handle *it being a native array.
+    internal::UniversalPrint(*it, os);
+  }
+
+  if (count > 0) {
+    *os << ' ';
+  }
+  *os << '}';
+}
+
+// Used to print a pointer that is neither a char pointer nor a member
+// pointer, when the user doesn't define PrintTo() for it.  (A member
+// variable pointer or member function pointer doesn't really point to
+// a location in the address space.  Their representation is
+// implementation-defined.  Therefore they will be printed as raw
+// bytes.)
+template <typename T>
+void DefaultPrintTo(WrapPrinterType<kPrintPointer> /* dummy */,
+                    T* p, ::std::ostream* os) {
+  if (p == nullptr) {
+    *os << "NULL";
+  } else {
+    // T is not a function type.  We just call << to print p,
+    // relying on ADL to pick up user-defined << for their pointer
+    // types, if any.
+    *os << p;
+  }
+}
+template <typename T>
+void DefaultPrintTo(WrapPrinterType<kPrintFunctionPointer> /* dummy */,
+                    T* p, ::std::ostream* os) {
+  if (p == nullptr) {
+    *os << "NULL";
+  } else {
+    // T is a function type, so '*os << p' doesn't do what we want
+    // (it just prints p as bool).  We want to print p as a const
+    // void*.
+    *os << reinterpret_cast<const void*>(p);
+  }
+}
+
+// Used to print a non-container, non-pointer value when the user
+// doesn't define PrintTo() for it.
+template <typename T>
+void DefaultPrintTo(WrapPrinterType<kPrintOther> /* dummy */,
+                    const T& value, ::std::ostream* os) {
+  ::testing_internal::DefaultPrintNonContainerTo(value, os);
+}
+
+// Prints the given value using the << operator if it has one;
+// otherwise prints the bytes in it.  This is what
+// UniversalPrinter<T>::Print() does when PrintTo() is not specialized
+// or overloaded for type T.
+//
+// A user can override this behavior for a class type Foo by defining
+// an overload of PrintTo() in the namespace where Foo is defined.  We
+// give the user this option as sometimes defining a << operator for
+// Foo is not desirable (e.g. the coding style may prevent doing it,
+// or there is already a << operator but it doesn't do what the user
+// wants).
+template <typename T>
+void PrintTo(const T& value, ::std::ostream* os) {
+  // DefaultPrintTo() is overloaded.  The type of its first argument
+  // determines which version will be picked.
+  //
+  // Note that we check for container types here, prior to we check
+  // for protocol message types in our operator<<.  The rationale is:
+  //
+  // For protocol messages, we want to give people a chance to
+  // override Google Mock's format by defining a PrintTo() or
+  // operator<<.  For STL containers, other formats can be
+  // incompatible with Google Mock's format for the container
+  // elements; therefore we check for container types here to ensure
+  // that our format is used.
+  //
+  // Note that MSVC and clang-cl do allow an implicit conversion from
+  // pointer-to-function to pointer-to-object, but clang-cl warns on it.
+  // So don't use ImplicitlyConvertible if it can be helped since it will
+  // cause this warning, and use a separate overload of DefaultPrintTo for
+  // function pointers so that the `*os << p` in the object pointer overload
+  // doesn't cause that warning either.
+  DefaultPrintTo(
+      WrapPrinterType <
+                  (sizeof(IsContainerTest<T>(0)) == sizeof(IsContainer)) &&
+              !IsRecursiveContainer<T>::value
+          ? kPrintContainer
+          : !std::is_pointer<T>::value
+                ? kPrintOther
+                : std::is_function<typename std::remove_pointer<T>::type>::value
+                      ? kPrintFunctionPointer
+                      : kPrintPointer > (),
+      value, os);
+}
+
+// The following list of PrintTo() overloads tells
+// UniversalPrinter<T>::Print() how to print standard types (built-in
+// types, strings, plain arrays, and pointers).
+
+// Overloads for various char types.
+GTEST_API_ void PrintTo(unsigned char c, ::std::ostream* os);
+GTEST_API_ void PrintTo(signed char c, ::std::ostream* os);
+inline void PrintTo(char c, ::std::ostream* os) {
+  // When printing a plain char, we always treat it as unsigned.  This
+  // way, the output won't be affected by whether the compiler thinks
+  // char is signed or not.
+  PrintTo(static_cast<unsigned char>(c), os);
+}
+
+// Overloads for other simple built-in types.
+inline void PrintTo(bool x, ::std::ostream* os) {
+  *os << (x ? "true" : "false");
+}
+
+// Overload for wchar_t type.
+// Prints a wchar_t as a symbol if it is printable or as its internal
+// code otherwise and also as its decimal code (except for L'\0').
+// The L'\0' char is printed as "L'\\0'". The decimal code is printed
+// as signed integer when wchar_t is implemented by the compiler
+// as a signed type and is printed as an unsigned integer when wchar_t
+// is implemented as an unsigned type.
+GTEST_API_ void PrintTo(wchar_t wc, ::std::ostream* os);
+
+// Overloads for C strings.
+GTEST_API_ void PrintTo(const char* s, ::std::ostream* os);
+inline void PrintTo(char* s, ::std::ostream* os) {
+  PrintTo(ImplicitCast_<const char*>(s), os);
+}
+
+// signed/unsigned char is often used for representing binary data, so
+// we print pointers to it as void* to be safe.
+inline void PrintTo(const signed char* s, ::std::ostream* os) {
+  PrintTo(ImplicitCast_<const void*>(s), os);
+}
+inline void PrintTo(signed char* s, ::std::ostream* os) {
+  PrintTo(ImplicitCast_<const void*>(s), os);
+}
+inline void PrintTo(const unsigned char* s, ::std::ostream* os) {
+  PrintTo(ImplicitCast_<const void*>(s), os);
+}
+inline void PrintTo(unsigned char* s, ::std::ostream* os) {
+  PrintTo(ImplicitCast_<const void*>(s), os);
+}
+
+// MSVC can be configured to define wchar_t as a typedef of unsigned
+// short.  It defines _NATIVE_WCHAR_T_DEFINED when wchar_t is a native
+// type.  When wchar_t is a typedef, defining an overload for const
+// wchar_t* would cause unsigned short* be printed as a wide string,
+// possibly causing invalid memory accesses.
+#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED)
+// Overloads for wide C strings
+GTEST_API_ void PrintTo(const wchar_t* s, ::std::ostream* os);
+inline void PrintTo(wchar_t* s, ::std::ostream* os) {
+  PrintTo(ImplicitCast_<const wchar_t*>(s), os);
+}
+#endif
+
+// Overload for C arrays.  Multi-dimensional arrays are printed
+// properly.
+
+// Prints the given number of elements in an array, without printing
+// the curly braces.
+template <typename T>
+void PrintRawArrayTo(const T a[], size_t count, ::std::ostream* os) {
+  UniversalPrint(a[0], os);
+  for (size_t i = 1; i != count; i++) {
+    *os << ", ";
+    UniversalPrint(a[i], os);
+  }
+}
+
+// Overloads for ::std::string.
+GTEST_API_ void PrintStringTo(const ::std::string&s, ::std::ostream* os);
+inline void PrintTo(const ::std::string& s, ::std::ostream* os) {
+  PrintStringTo(s, os);
+}
+
+// Overloads for ::std::wstring.
+#if GTEST_HAS_STD_WSTRING
+GTEST_API_ void PrintWideStringTo(const ::std::wstring&s, ::std::ostream* os);
+inline void PrintTo(const ::std::wstring& s, ::std::ostream* os) {
+  PrintWideStringTo(s, os);
+}
+#endif  // GTEST_HAS_STD_WSTRING
+
+#if GTEST_HAS_ABSL
+// Overload for absl::string_view.
+inline void PrintTo(absl::string_view sp, ::std::ostream* os) {
+  PrintTo(::std::string(sp), os);
+}
+#endif  // GTEST_HAS_ABSL
+
+inline void PrintTo(std::nullptr_t, ::std::ostream* os) { *os << "(nullptr)"; }
+
+template <typename T>
+void PrintTo(std::reference_wrapper<T> ref, ::std::ostream* os) {
+  UniversalPrinter<T&>::Print(ref.get(), os);
+}
+
+// Helper function for printing a tuple.  T must be instantiated with
+// a tuple type.
+template <typename T>
+void PrintTupleTo(const T&, std::integral_constant<size_t, 0>,
+                  ::std::ostream*) {}
+
+template <typename T, size_t I>
+void PrintTupleTo(const T& t, std::integral_constant<size_t, I>,
+                  ::std::ostream* os) {
+  PrintTupleTo(t, std::integral_constant<size_t, I - 1>(), os);
+  GTEST_INTENTIONAL_CONST_COND_PUSH_()
+  if (I > 1) {
+    GTEST_INTENTIONAL_CONST_COND_POP_()
+    *os << ", ";
+  }
+  UniversalPrinter<typename std::tuple_element<I - 1, T>::type>::Print(
+      std::get<I - 1>(t), os);
+}
+
+template <typename... Types>
+void PrintTo(const ::std::tuple<Types...>& t, ::std::ostream* os) {
+  *os << "(";
+  PrintTupleTo(t, std::integral_constant<size_t, sizeof...(Types)>(), os);
+  *os << ")";
+}
+
+// Overload for std::pair.
+template <typename T1, typename T2>
+void PrintTo(const ::std::pair<T1, T2>& value, ::std::ostream* os) {
+  *os << '(';
+  // We cannot use UniversalPrint(value.first, os) here, as T1 may be
+  // a reference type.  The same for printing value.second.
+  UniversalPrinter<T1>::Print(value.first, os);
+  *os << ", ";
+  UniversalPrinter<T2>::Print(value.second, os);
+  *os << ')';
+}
+
+// Implements printing a non-reference type T by letting the compiler
+// pick the right overload of PrintTo() for T.
+template <typename T>
+class UniversalPrinter {
+ public:
+  // MSVC warns about adding const to a function type, so we want to
+  // disable the warning.
+  GTEST_DISABLE_MSC_WARNINGS_PUSH_(4180)
+
+  // Note: we deliberately don't call this PrintTo(), as that name
+  // conflicts with ::testing::internal::PrintTo in the body of the
+  // function.
+  static void Print(const T& value, ::std::ostream* os) {
+    // By default, ::testing::internal::PrintTo() is used for printing
+    // the value.
+    //
+    // Thanks to Koenig look-up, if T is a class and has its own
+    // PrintTo() function defined in its namespace, that function will
+    // be visible here.  Since it is more specific than the generic ones
+    // in ::testing::internal, it will be picked by the compiler in the
+    // following statement - exactly what we want.
+    PrintTo(value, os);
+  }
+
+  GTEST_DISABLE_MSC_WARNINGS_POP_()
+};
+
+#if GTEST_HAS_ABSL
+
+// Printer for absl::optional
+
+template <typename T>
+class UniversalPrinter<::absl::optional<T>> {
+ public:
+  static void Print(const ::absl::optional<T>& value, ::std::ostream* os) {
+    *os << '(';
+    if (!value) {
+      *os << "nullopt";
+    } else {
+      UniversalPrint(*value, os);
+    }
+    *os << ')';
+  }
+};
+
+// Printer for absl::variant
+
+template <typename... T>
+class UniversalPrinter<::absl::variant<T...>> {
+ public:
+  static void Print(const ::absl::variant<T...>& value, ::std::ostream* os) {
+    *os << '(';
+    absl::visit(Visitor{os}, value);
+    *os << ')';
+  }
+
+ private:
+  struct Visitor {
+    template <typename U>
+    void operator()(const U& u) const {
+      *os << "'" << GetTypeName<U>() << "' with value ";
+      UniversalPrint(u, os);
+    }
+    ::std::ostream* os;
+  };
+};
+
+#endif  // GTEST_HAS_ABSL
+
+// UniversalPrintArray(begin, len, os) prints an array of 'len'
+// elements, starting at address 'begin'.
+template <typename T>
+void UniversalPrintArray(const T* begin, size_t len, ::std::ostream* os) {
+  if (len == 0) {
+    *os << "{}";
+  } else {
+    *os << "{ ";
+    const size_t kThreshold = 18;
+    const size_t kChunkSize = 8;
+    // If the array has more than kThreshold elements, we'll have to
+    // omit some details by printing only the first and the last
+    // kChunkSize elements.
+    if (len <= kThreshold) {
+      PrintRawArrayTo(begin, len, os);
+    } else {
+      PrintRawArrayTo(begin, kChunkSize, os);
+      *os << ", ..., ";
+      PrintRawArrayTo(begin + len - kChunkSize, kChunkSize, os);
+    }
+    *os << " }";
+  }
+}
+// This overload prints a (const) char array compactly.
+GTEST_API_ void UniversalPrintArray(
+    const char* begin, size_t len, ::std::ostream* os);
+
+// This overload prints a (const) wchar_t array compactly.
+GTEST_API_ void UniversalPrintArray(
+    const wchar_t* begin, size_t len, ::std::ostream* os);
+
+// Implements printing an array type T[N].
+template <typename T, size_t N>
+class UniversalPrinter<T[N]> {
+ public:
+  // Prints the given array, omitting some elements when there are too
+  // many.
+  static void Print(const T (&a)[N], ::std::ostream* os) {
+    UniversalPrintArray(a, N, os);
+  }
+};
+
+// Implements printing a reference type T&.
+template <typename T>
+class UniversalPrinter<T&> {
+ public:
+  // MSVC warns about adding const to a function type, so we want to
+  // disable the warning.
+  GTEST_DISABLE_MSC_WARNINGS_PUSH_(4180)
+
+  static void Print(const T& value, ::std::ostream* os) {
+    // Prints the address of the value.  We use reinterpret_cast here
+    // as static_cast doesn't compile when T is a function type.
+    *os << "@" << reinterpret_cast<const void*>(&value) << " ";
+
+    // Then prints the value itself.
+    UniversalPrint(value, os);
+  }
+
+  GTEST_DISABLE_MSC_WARNINGS_POP_()
+};
+
+// Prints a value tersely: for a reference type, the referenced value
+// (but not the address) is printed; for a (const) char pointer, the
+// NUL-terminated string (but not the pointer) is printed.
+
+template <typename T>
+class UniversalTersePrinter {
+ public:
+  static void Print(const T& value, ::std::ostream* os) {
+    UniversalPrint(value, os);
+  }
+};
+template <typename T>
+class UniversalTersePrinter<T&> {
+ public:
+  static void Print(const T& value, ::std::ostream* os) {
+    UniversalPrint(value, os);
+  }
+};
+template <typename T, size_t N>
+class UniversalTersePrinter<T[N]> {
+ public:
+  static void Print(const T (&value)[N], ::std::ostream* os) {
+    UniversalPrinter<T[N]>::Print(value, os);
+  }
+};
+template <>
+class UniversalTersePrinter<const char*> {
+ public:
+  static void Print(const char* str, ::std::ostream* os) {
+    if (str == nullptr) {
+      *os << "NULL";
+    } else {
+      UniversalPrint(std::string(str), os);
+    }
+  }
+};
+template <>
+class UniversalTersePrinter<char*> {
+ public:
+  static void Print(char* str, ::std::ostream* os) {
+    UniversalTersePrinter<const char*>::Print(str, os);
+  }
+};
+
+#if GTEST_HAS_STD_WSTRING
+template <>
+class UniversalTersePrinter<const wchar_t*> {
+ public:
+  static void Print(const wchar_t* str, ::std::ostream* os) {
+    if (str == nullptr) {
+      *os << "NULL";
+    } else {
+      UniversalPrint(::std::wstring(str), os);
+    }
+  }
+};
+#endif
+
+template <>
+class UniversalTersePrinter<wchar_t*> {
+ public:
+  static void Print(wchar_t* str, ::std::ostream* os) {
+    UniversalTersePrinter<const wchar_t*>::Print(str, os);
+  }
+};
+
+template <typename T>
+void UniversalTersePrint(const T& value, ::std::ostream* os) {
+  UniversalTersePrinter<T>::Print(value, os);
+}
+
+// Prints a value using the type inferred by the compiler.  The
+// difference between this and UniversalTersePrint() is that for a
+// (const) char pointer, this prints both the pointer and the
+// NUL-terminated string.
+template <typename T>
+void UniversalPrint(const T& value, ::std::ostream* os) {
+  // A workarond for the bug in VC++ 7.1 that prevents us from instantiating
+  // UniversalPrinter with T directly.
+  typedef T T1;
+  UniversalPrinter<T1>::Print(value, os);
+}
+
+typedef ::std::vector< ::std::string> Strings;
+
+  // Tersely prints the first N fields of a tuple to a string vector,
+  // one element for each field.
+template <typename Tuple>
+void TersePrintPrefixToStrings(const Tuple&, std::integral_constant<size_t, 0>,
+                               Strings*) {}
+template <typename Tuple, size_t I>
+void TersePrintPrefixToStrings(const Tuple& t,
+                               std::integral_constant<size_t, I>,
+                               Strings* strings) {
+  TersePrintPrefixToStrings(t, std::integral_constant<size_t, I - 1>(),
+                            strings);
+  ::std::stringstream ss;
+  UniversalTersePrint(std::get<I - 1>(t), &ss);
+  strings->push_back(ss.str());
+}
+
+// Prints the fields of a tuple tersely to a string vector, one
+// element for each field.  See the comment before
+// UniversalTersePrint() for how we define "tersely".
+template <typename Tuple>
+Strings UniversalTersePrintTupleFieldsToStrings(const Tuple& value) {
+  Strings result;
+  TersePrintPrefixToStrings(
+      value, std::integral_constant<size_t, std::tuple_size<Tuple>::value>(),
+      &result);
+  return result;
+}
+
+}  // namespace internal
+
+#if GTEST_HAS_ABSL
+namespace internal2 {
+template <typename T>
+void TypeWithoutFormatter<T, kConvertibleToStringView>::PrintValue(
+    const T& value, ::std::ostream* os) {
+  internal::PrintTo(absl::string_view(value), os);
+}
+}  // namespace internal2
+#endif
+
+template <typename T>
+::std::string PrintToString(const T& value) {
+  ::std::stringstream ss;
+  internal::UniversalTersePrinter<T>::Print(value, &ss);
+  return ss.str();
+}
+
+}  // namespace testing
+
+// Include any custom printer added by the local installation.
+// We must include this header at the end to make sure it can use the
+// declarations from this file.
+#include "gtest/internal/custom/gtest-printers.h"
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/gtest-spi.h b/build/_deps/googletest-src/googletest/include/gtest/gtest-spi.h
new file mode 100644
index 0000000000000000000000000000000000000000..aa38870e8e1c91294e73cf4e8cb41d7f32764e8e
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/gtest-spi.h
@@ -0,0 +1,238 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Utilities for testing Google Test itself and code that uses Google Test
+// (e.g. frameworks built on top of Google Test).
+
+// GOOGLETEST_CM0004 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_SPI_H_
+#define GTEST_INCLUDE_GTEST_GTEST_SPI_H_
+
+#include "gtest/gtest.h"
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
+namespace testing {
+
+// This helper class can be used to mock out Google Test failure reporting
+// so that we can test Google Test or code that builds on Google Test.
+//
+// An object of this class appends a TestPartResult object to the
+// TestPartResultArray object given in the constructor whenever a Google Test
+// failure is reported. It can either intercept only failures that are
+// generated in the same thread that created this object or it can intercept
+// all generated failures. The scope of this mock object can be controlled with
+// the second argument to the two arguments constructor.
+class GTEST_API_ ScopedFakeTestPartResultReporter
+    : public TestPartResultReporterInterface {
+ public:
+  // The two possible mocking modes of this object.
+  enum InterceptMode {
+    INTERCEPT_ONLY_CURRENT_THREAD,  // Intercepts only thread local failures.
+    INTERCEPT_ALL_THREADS           // Intercepts all failures.
+  };
+
+  // The c'tor sets this object as the test part result reporter used
+  // by Google Test.  The 'result' parameter specifies where to report the
+  // results. This reporter will only catch failures generated in the current
+  // thread. DEPRECATED
+  explicit ScopedFakeTestPartResultReporter(TestPartResultArray* result);
+
+  // Same as above, but you can choose the interception scope of this object.
+  ScopedFakeTestPartResultReporter(InterceptMode intercept_mode,
+                                   TestPartResultArray* result);
+
+  // The d'tor restores the previous test part result reporter.
+  ~ScopedFakeTestPartResultReporter() override;
+
+  // Appends the TestPartResult object to the TestPartResultArray
+  // received in the constructor.
+  //
+  // This method is from the TestPartResultReporterInterface
+  // interface.
+  void ReportTestPartResult(const TestPartResult& result) override;
+
+ private:
+  void Init();
+
+  const InterceptMode intercept_mode_;
+  TestPartResultReporterInterface* old_reporter_;
+  TestPartResultArray* const result_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ScopedFakeTestPartResultReporter);
+};
+
+namespace internal {
+
+// A helper class for implementing EXPECT_FATAL_FAILURE() and
+// EXPECT_NONFATAL_FAILURE().  Its destructor verifies that the given
+// TestPartResultArray contains exactly one failure that has the given
+// type and contains the given substring.  If that's not the case, a
+// non-fatal failure will be generated.
+class GTEST_API_ SingleFailureChecker {
+ public:
+  // The constructor remembers the arguments.
+  SingleFailureChecker(const TestPartResultArray* results,
+                       TestPartResult::Type type, const std::string& substr);
+  ~SingleFailureChecker();
+ private:
+  const TestPartResultArray* const results_;
+  const TestPartResult::Type type_;
+  const std::string substr_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(SingleFailureChecker);
+};
+
+}  // namespace internal
+
+}  // namespace testing
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
+// A set of macros for testing Google Test assertions or code that's expected
+// to generate Google Test fatal failures.  It verifies that the given
+// statement will cause exactly one fatal Google Test failure with 'substr'
+// being part of the failure message.
+//
+// There are two different versions of this macro. EXPECT_FATAL_FAILURE only
+// affects and considers failures generated in the current thread and
+// EXPECT_FATAL_FAILURE_ON_ALL_THREADS does the same but for all threads.
+//
+// The verification of the assertion is done correctly even when the statement
+// throws an exception or aborts the current function.
+//
+// Known restrictions:
+//   - 'statement' cannot reference local non-static variables or
+//     non-static members of the current object.
+//   - 'statement' cannot return a value.
+//   - You cannot stream a failure message to this macro.
+//
+// Note that even though the implementations of the following two
+// macros are much alike, we cannot refactor them to use a common
+// helper macro, due to some peculiarity in how the preprocessor
+// works.  The AcceptsMacroThatExpandsToUnprotectedComma test in
+// gtest_unittest.cc will fail to compile if we do that.
+#define EXPECT_FATAL_FAILURE(statement, substr) \
+  do { \
+    class GTestExpectFatalFailureHelper {\
+     public:\
+      static void Execute() { statement; }\
+    };\
+    ::testing::TestPartResultArray gtest_failures;\
+    ::testing::internal::SingleFailureChecker gtest_checker(\
+        &gtest_failures, ::testing::TestPartResult::kFatalFailure, (substr));\
+    {\
+      ::testing::ScopedFakeTestPartResultReporter gtest_reporter(\
+          ::testing::ScopedFakeTestPartResultReporter:: \
+          INTERCEPT_ONLY_CURRENT_THREAD, &gtest_failures);\
+      GTestExpectFatalFailureHelper::Execute();\
+    }\
+  } while (::testing::internal::AlwaysFalse())
+
+#define EXPECT_FATAL_FAILURE_ON_ALL_THREADS(statement, substr) \
+  do { \
+    class GTestExpectFatalFailureHelper {\
+     public:\
+      static void Execute() { statement; }\
+    };\
+    ::testing::TestPartResultArray gtest_failures;\
+    ::testing::internal::SingleFailureChecker gtest_checker(\
+        &gtest_failures, ::testing::TestPartResult::kFatalFailure, (substr));\
+    {\
+      ::testing::ScopedFakeTestPartResultReporter gtest_reporter(\
+          ::testing::ScopedFakeTestPartResultReporter:: \
+          INTERCEPT_ALL_THREADS, &gtest_failures);\
+      GTestExpectFatalFailureHelper::Execute();\
+    }\
+  } while (::testing::internal::AlwaysFalse())
+
+// A macro for testing Google Test assertions or code that's expected to
+// generate Google Test non-fatal failures.  It asserts that the given
+// statement will cause exactly one non-fatal Google Test failure with 'substr'
+// being part of the failure message.
+//
+// There are two different versions of this macro. EXPECT_NONFATAL_FAILURE only
+// affects and considers failures generated in the current thread and
+// EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS does the same but for all threads.
+//
+// 'statement' is allowed to reference local variables and members of
+// the current object.
+//
+// The verification of the assertion is done correctly even when the statement
+// throws an exception or aborts the current function.
+//
+// Known restrictions:
+//   - You cannot stream a failure message to this macro.
+//
+// Note that even though the implementations of the following two
+// macros are much alike, we cannot refactor them to use a common
+// helper macro, due to some peculiarity in how the preprocessor
+// works.  If we do that, the code won't compile when the user gives
+// EXPECT_NONFATAL_FAILURE() a statement that contains a macro that
+// expands to code containing an unprotected comma.  The
+// AcceptsMacroThatExpandsToUnprotectedComma test in gtest_unittest.cc
+// catches that.
+//
+// For the same reason, we have to write
+//   if (::testing::internal::AlwaysTrue()) { statement; }
+// instead of
+//   GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement)
+// to avoid an MSVC warning on unreachable code.
+#define EXPECT_NONFATAL_FAILURE(statement, substr) \
+  do {\
+    ::testing::TestPartResultArray gtest_failures;\
+    ::testing::internal::SingleFailureChecker gtest_checker(\
+        &gtest_failures, ::testing::TestPartResult::kNonFatalFailure, \
+        (substr));\
+    {\
+      ::testing::ScopedFakeTestPartResultReporter gtest_reporter(\
+          ::testing::ScopedFakeTestPartResultReporter:: \
+          INTERCEPT_ONLY_CURRENT_THREAD, &gtest_failures);\
+      if (::testing::internal::AlwaysTrue()) { statement; }\
+    }\
+  } while (::testing::internal::AlwaysFalse())
+
+#define EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(statement, substr) \
+  do {\
+    ::testing::TestPartResultArray gtest_failures;\
+    ::testing::internal::SingleFailureChecker gtest_checker(\
+        &gtest_failures, ::testing::TestPartResult::kNonFatalFailure, \
+        (substr));\
+    {\
+      ::testing::ScopedFakeTestPartResultReporter gtest_reporter(\
+          ::testing::ScopedFakeTestPartResultReporter::INTERCEPT_ALL_THREADS, \
+          &gtest_failures);\
+      if (::testing::internal::AlwaysTrue()) { statement; }\
+    }\
+  } while (::testing::internal::AlwaysFalse())
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_SPI_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/gtest-test-part.h b/build/_deps/googletest-src/googletest/include/gtest/gtest-test-part.h
new file mode 100644
index 0000000000000000000000000000000000000000..05a79853586a911c49ddf910fa1f0595e338265e
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/gtest-test-part.h
@@ -0,0 +1,184 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_TEST_PART_H_
+#define GTEST_INCLUDE_GTEST_GTEST_TEST_PART_H_
+
+#include <iosfwd>
+#include <vector>
+#include "gtest/internal/gtest-internal.h"
+#include "gtest/internal/gtest-string.h"
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
+namespace testing {
+
+// A copyable object representing the result of a test part (i.e. an
+// assertion or an explicit FAIL(), ADD_FAILURE(), or SUCCESS()).
+//
+// Don't inherit from TestPartResult as its destructor is not virtual.
+class GTEST_API_ TestPartResult {
+ public:
+  // The possible outcomes of a test part (i.e. an assertion or an
+  // explicit SUCCEED(), FAIL(), or ADD_FAILURE()).
+  enum Type {
+    kSuccess,          // Succeeded.
+    kNonFatalFailure,  // Failed but the test can continue.
+    kFatalFailure,     // Failed and the test should be terminated.
+    kSkip              // Skipped.
+  };
+
+  // C'tor.  TestPartResult does NOT have a default constructor.
+  // Always use this constructor (with parameters) to create a
+  // TestPartResult object.
+  TestPartResult(Type a_type, const char* a_file_name, int a_line_number,
+                 const char* a_message)
+      : type_(a_type),
+        file_name_(a_file_name == nullptr ? "" : a_file_name),
+        line_number_(a_line_number),
+        summary_(ExtractSummary(a_message)),
+        message_(a_message) {}
+
+  // Gets the outcome of the test part.
+  Type type() const { return type_; }
+
+  // Gets the name of the source file where the test part took place, or
+  // NULL if it's unknown.
+  const char* file_name() const {
+    return file_name_.empty() ? nullptr : file_name_.c_str();
+  }
+
+  // Gets the line in the source file where the test part took place,
+  // or -1 if it's unknown.
+  int line_number() const { return line_number_; }
+
+  // Gets the summary of the failure message.
+  const char* summary() const { return summary_.c_str(); }
+
+  // Gets the message associated with the test part.
+  const char* message() const { return message_.c_str(); }
+
+  // Returns true if and only if the test part was skipped.
+  bool skipped() const { return type_ == kSkip; }
+
+  // Returns true if and only if the test part passed.
+  bool passed() const { return type_ == kSuccess; }
+
+  // Returns true if and only if the test part non-fatally failed.
+  bool nonfatally_failed() const { return type_ == kNonFatalFailure; }
+
+  // Returns true if and only if the test part fatally failed.
+  bool fatally_failed() const { return type_ == kFatalFailure; }
+
+  // Returns true if and only if the test part failed.
+  bool failed() const { return fatally_failed() || nonfatally_failed(); }
+
+ private:
+  Type type_;
+
+  // Gets the summary of the failure message by omitting the stack
+  // trace in it.
+  static std::string ExtractSummary(const char* message);
+
+  // The name of the source file where the test part took place, or
+  // "" if the source file is unknown.
+  std::string file_name_;
+  // The line in the source file where the test part took place, or -1
+  // if the line number is unknown.
+  int line_number_;
+  std::string summary_;  // The test failure summary.
+  std::string message_;  // The test failure message.
+};
+
+// Prints a TestPartResult object.
+std::ostream& operator<<(std::ostream& os, const TestPartResult& result);
+
+// An array of TestPartResult objects.
+//
+// Don't inherit from TestPartResultArray as its destructor is not
+// virtual.
+class GTEST_API_ TestPartResultArray {
+ public:
+  TestPartResultArray() {}
+
+  // Appends the given TestPartResult to the array.
+  void Append(const TestPartResult& result);
+
+  // Returns the TestPartResult at the given index (0-based).
+  const TestPartResult& GetTestPartResult(int index) const;
+
+  // Returns the number of TestPartResult objects in the array.
+  int size() const;
+
+ private:
+  std::vector<TestPartResult> array_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestPartResultArray);
+};
+
+// This interface knows how to report a test part result.
+class GTEST_API_ TestPartResultReporterInterface {
+ public:
+  virtual ~TestPartResultReporterInterface() {}
+
+  virtual void ReportTestPartResult(const TestPartResult& result) = 0;
+};
+
+namespace internal {
+
+// This helper class is used by {ASSERT|EXPECT}_NO_FATAL_FAILURE to check if a
+// statement generates new fatal failures. To do so it registers itself as the
+// current test part result reporter. Besides checking if fatal failures were
+// reported, it only delegates the reporting to the former result reporter.
+// The original result reporter is restored in the destructor.
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+class GTEST_API_ HasNewFatalFailureHelper
+    : public TestPartResultReporterInterface {
+ public:
+  HasNewFatalFailureHelper();
+  ~HasNewFatalFailureHelper() override;
+  void ReportTestPartResult(const TestPartResult& result) override;
+  bool has_new_fatal_failure() const { return has_new_fatal_failure_; }
+ private:
+  bool has_new_fatal_failure_;
+  TestPartResultReporterInterface* original_reporter_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(HasNewFatalFailureHelper);
+};
+
+}  // namespace internal
+
+}  // namespace testing
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_TEST_PART_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/gtest-typed-test.h b/build/_deps/googletest-src/googletest/include/gtest/gtest-typed-test.h
new file mode 100644
index 0000000000000000000000000000000000000000..095ce058022f892169664e29ea2bc528f960576b
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/gtest-typed-test.h
@@ -0,0 +1,330 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_
+#define GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_
+
+// This header implements typed tests and type-parameterized tests.
+
+// Typed (aka type-driven) tests repeat the same test for types in a
+// list.  You must know which types you want to test with when writing
+// typed tests. Here's how you do it:
+
+#if 0
+
+// First, define a fixture class template.  It should be parameterized
+// by a type.  Remember to derive it from testing::Test.
+template <typename T>
+class FooTest : public testing::Test {
+ public:
+  ...
+  typedef std::list<T> List;
+  static T shared_;
+  T value_;
+};
+
+// Next, associate a list of types with the test suite, which will be
+// repeated for each type in the list.  The typedef is necessary for
+// the macro to parse correctly.
+typedef testing::Types<char, int, unsigned int> MyTypes;
+TYPED_TEST_SUITE(FooTest, MyTypes);
+
+// If the type list contains only one type, you can write that type
+// directly without Types<...>:
+//   TYPED_TEST_SUITE(FooTest, int);
+
+// Then, use TYPED_TEST() instead of TEST_F() to define as many typed
+// tests for this test suite as you want.
+TYPED_TEST(FooTest, DoesBlah) {
+  // Inside a test, refer to the special name TypeParam to get the type
+  // parameter.  Since we are inside a derived class template, C++ requires
+  // us to visit the members of FooTest via 'this'.
+  TypeParam n = this->value_;
+
+  // To visit static members of the fixture, add the TestFixture::
+  // prefix.
+  n += TestFixture::shared_;
+
+  // To refer to typedefs in the fixture, add the "typename
+  // TestFixture::" prefix.
+  typename TestFixture::List values;
+  values.push_back(n);
+  ...
+}
+
+TYPED_TEST(FooTest, HasPropertyA) { ... }
+
+// TYPED_TEST_SUITE takes an optional third argument which allows to specify a
+// class that generates custom test name suffixes based on the type. This should
+// be a class which has a static template function GetName(int index) returning
+// a string for each type. The provided integer index equals the index of the
+// type in the provided type list. In many cases the index can be ignored.
+//
+// For example:
+//   class MyTypeNames {
+//    public:
+//     template <typename T>
+//     static std::string GetName(int) {
+//       if (std::is_same<T, char>()) return "char";
+//       if (std::is_same<T, int>()) return "int";
+//       if (std::is_same<T, unsigned int>()) return "unsignedInt";
+//     }
+//   };
+//   TYPED_TEST_SUITE(FooTest, MyTypes, MyTypeNames);
+
+#endif  // 0
+
+// Type-parameterized tests are abstract test patterns parameterized
+// by a type.  Compared with typed tests, type-parameterized tests
+// allow you to define the test pattern without knowing what the type
+// parameters are.  The defined pattern can be instantiated with
+// different types any number of times, in any number of translation
+// units.
+//
+// If you are designing an interface or concept, you can define a
+// suite of type-parameterized tests to verify properties that any
+// valid implementation of the interface/concept should have.  Then,
+// each implementation can easily instantiate the test suite to verify
+// that it conforms to the requirements, without having to write
+// similar tests repeatedly.  Here's an example:
+
+#if 0
+
+// First, define a fixture class template.  It should be parameterized
+// by a type.  Remember to derive it from testing::Test.
+template <typename T>
+class FooTest : public testing::Test {
+  ...
+};
+
+// Next, declare that you will define a type-parameterized test suite
+// (the _P suffix is for "parameterized" or "pattern", whichever you
+// prefer):
+TYPED_TEST_SUITE_P(FooTest);
+
+// Then, use TYPED_TEST_P() to define as many type-parameterized tests
+// for this type-parameterized test suite as you want.
+TYPED_TEST_P(FooTest, DoesBlah) {
+  // Inside a test, refer to TypeParam to get the type parameter.
+  TypeParam n = 0;
+  ...
+}
+
+TYPED_TEST_P(FooTest, HasPropertyA) { ... }
+
+// Now the tricky part: you need to register all test patterns before
+// you can instantiate them.  The first argument of the macro is the
+// test suite name; the rest are the names of the tests in this test
+// case.
+REGISTER_TYPED_TEST_SUITE_P(FooTest,
+                            DoesBlah, HasPropertyA);
+
+// Finally, you are free to instantiate the pattern with the types you
+// want.  If you put the above code in a header file, you can #include
+// it in multiple C++ source files and instantiate it multiple times.
+//
+// To distinguish different instances of the pattern, the first
+// argument to the INSTANTIATE_* macro is a prefix that will be added
+// to the actual test suite name.  Remember to pick unique prefixes for
+// different instances.
+typedef testing::Types<char, int, unsigned int> MyTypes;
+INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes);
+
+// If the type list contains only one type, you can write that type
+// directly without Types<...>:
+//   INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, int);
+//
+// Similar to the optional argument of TYPED_TEST_SUITE above,
+// INSTANTIATE_TEST_SUITE_P takes an optional fourth argument which allows to
+// generate custom names.
+//   INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes, MyTypeNames);
+
+#endif  // 0
+
+#include "gtest/internal/gtest-port.h"
+#include "gtest/internal/gtest-type-util.h"
+
+// Implements typed tests.
+
+#if GTEST_HAS_TYPED_TEST
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// Expands to the name of the typedef for the type parameters of the
+// given test suite.
+#define GTEST_TYPE_PARAMS_(TestSuiteName) gtest_type_params_##TestSuiteName##_
+
+// Expands to the name of the typedef for the NameGenerator, responsible for
+// creating the suffixes of the name.
+#define GTEST_NAME_GENERATOR_(TestSuiteName) \
+  gtest_type_params_##TestSuiteName##_NameGenerator
+
+#define TYPED_TEST_SUITE(CaseName, Types, ...)                           \
+  typedef ::testing::internal::TypeList<Types>::type GTEST_TYPE_PARAMS_( \
+      CaseName);                                                         \
+  typedef ::testing::internal::NameGeneratorSelector<__VA_ARGS__>::type  \
+      GTEST_NAME_GENERATOR_(CaseName)
+
+# define TYPED_TEST(CaseName, TestName)                                       \
+  template <typename gtest_TypeParam_>                                        \
+  class GTEST_TEST_CLASS_NAME_(CaseName, TestName)                            \
+      : public CaseName<gtest_TypeParam_> {                                   \
+   private:                                                                   \
+    typedef CaseName<gtest_TypeParam_> TestFixture;                           \
+    typedef gtest_TypeParam_ TypeParam;                                       \
+    virtual void TestBody();                                                  \
+  };                                                                          \
+  static bool gtest_##CaseName##_##TestName##_registered_                     \
+        GTEST_ATTRIBUTE_UNUSED_ =                                             \
+      ::testing::internal::TypeParameterizedTest<                             \
+          CaseName,                                                           \
+          ::testing::internal::TemplateSel<GTEST_TEST_CLASS_NAME_(CaseName,   \
+                                                                  TestName)>, \
+          GTEST_TYPE_PARAMS_(                                                 \
+              CaseName)>::Register("",                                        \
+                                   ::testing::internal::CodeLocation(         \
+                                       __FILE__, __LINE__),                   \
+                                   #CaseName, #TestName, 0,                   \
+                                   ::testing::internal::GenerateNames<        \
+                                       GTEST_NAME_GENERATOR_(CaseName),       \
+                                       GTEST_TYPE_PARAMS_(CaseName)>());      \
+  template <typename gtest_TypeParam_>                                        \
+  void GTEST_TEST_CLASS_NAME_(CaseName,                                       \
+                              TestName)<gtest_TypeParam_>::TestBody()
+
+// Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+#define TYPED_TEST_CASE                                                \
+  static_assert(::testing::internal::TypedTestCaseIsDeprecated(), ""); \
+  TYPED_TEST_SUITE
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+#endif  // GTEST_HAS_TYPED_TEST
+
+// Implements type-parameterized tests.
+
+#if GTEST_HAS_TYPED_TEST_P
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// Expands to the namespace name that the type-parameterized tests for
+// the given type-parameterized test suite are defined in.  The exact
+// name of the namespace is subject to change without notice.
+#define GTEST_SUITE_NAMESPACE_(TestSuiteName) gtest_suite_##TestSuiteName##_
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// Expands to the name of the variable used to remember the names of
+// the defined tests in the given test suite.
+#define GTEST_TYPED_TEST_SUITE_P_STATE_(TestSuiteName) \
+  gtest_typed_test_suite_p_state_##TestSuiteName##_
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE DIRECTLY.
+//
+// Expands to the name of the variable used to remember the names of
+// the registered tests in the given test suite.
+#define GTEST_REGISTERED_TEST_NAMES_(TestSuiteName) \
+  gtest_registered_test_names_##TestSuiteName##_
+
+// The variables defined in the type-parameterized test macros are
+// static as typically these macros are used in a .h file that can be
+// #included in multiple translation units linked together.
+#define TYPED_TEST_SUITE_P(SuiteName)              \
+  static ::testing::internal::TypedTestSuitePState \
+      GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName)
+
+// Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+#define TYPED_TEST_CASE_P                                                 \
+  static_assert(::testing::internal::TypedTestCase_P_IsDeprecated(), ""); \
+  TYPED_TEST_SUITE_P
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+#define TYPED_TEST_P(SuiteName, TestName)                             \
+  namespace GTEST_SUITE_NAMESPACE_(SuiteName) {                       \
+    template <typename gtest_TypeParam_>                              \
+    class TestName : public SuiteName<gtest_TypeParam_> {             \
+     private:                                                         \
+      typedef SuiteName<gtest_TypeParam_> TestFixture;                \
+      typedef gtest_TypeParam_ TypeParam;                             \
+      virtual void TestBody();                                        \
+    };                                                                \
+    static bool gtest_##TestName##_defined_ GTEST_ATTRIBUTE_UNUSED_ = \
+        GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName).AddTestName(       \
+            __FILE__, __LINE__, #SuiteName, #TestName);               \
+  }                                                                   \
+  template <typename gtest_TypeParam_>                                \
+  void GTEST_SUITE_NAMESPACE_(                                        \
+      SuiteName)::TestName<gtest_TypeParam_>::TestBody()
+
+#define REGISTER_TYPED_TEST_SUITE_P(SuiteName, ...)                            \
+  namespace GTEST_SUITE_NAMESPACE_(SuiteName) {                                \
+    typedef ::testing::internal::Templates<__VA_ARGS__>::type gtest_AllTests_; \
+  }                                                                            \
+  static const char* const GTEST_REGISTERED_TEST_NAMES_(                       \
+      SuiteName) GTEST_ATTRIBUTE_UNUSED_ =                                     \
+      GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName).VerifyRegisteredTestNames(    \
+          __FILE__, __LINE__, #__VA_ARGS__)
+
+// Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+#define REGISTER_TYPED_TEST_CASE_P                                           \
+  static_assert(::testing::internal::RegisterTypedTestCase_P_IsDeprecated(), \
+                "");                                                         \
+  REGISTER_TYPED_TEST_SUITE_P
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+#define INSTANTIATE_TYPED_TEST_SUITE_P(Prefix, SuiteName, Types, ...)       \
+  static bool gtest_##Prefix##_##SuiteName GTEST_ATTRIBUTE_UNUSED_ =        \
+      ::testing::internal::TypeParameterizedTestSuite<                      \
+          SuiteName, GTEST_SUITE_NAMESPACE_(SuiteName)::gtest_AllTests_,    \
+          ::testing::internal::TypeList<Types>::type>::                     \
+          Register(#Prefix,                                                 \
+                   ::testing::internal::CodeLocation(__FILE__, __LINE__),   \
+                   &GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName), #SuiteName, \
+                   GTEST_REGISTERED_TEST_NAMES_(SuiteName),                 \
+                   ::testing::internal::GenerateNames<                      \
+                       ::testing::internal::NameGeneratorSelector<          \
+                           __VA_ARGS__>::type,                              \
+                       ::testing::internal::TypeList<Types>::type>())
+
+// Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+#define INSTANTIATE_TYPED_TEST_CASE_P                                      \
+  static_assert(                                                           \
+      ::testing::internal::InstantiateTypedTestCase_P_IsDeprecated(), ""); \
+  INSTANTIATE_TYPED_TEST_SUITE_P
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+#endif  // GTEST_HAS_TYPED_TEST_P
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/gtest.h b/build/_deps/googletest-src/googletest/include/gtest/gtest.h
new file mode 100644
index 0000000000000000000000000000000000000000..dbe5b1c2c3f647f9d707e2e4ceb1d0c0d2aac7dd
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/gtest.h
@@ -0,0 +1,2478 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This header file defines the public API for Google Test.  It should be
+// included by any test program that uses Google Test.
+//
+// IMPORTANT NOTE: Due to limitation of the C++ language, we have to
+// leave some internal implementation details in this header file.
+// They are clearly marked by comments like this:
+//
+//   // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+//
+// Such code is NOT meant to be used by a user directly, and is subject
+// to CHANGE WITHOUT NOTICE.  Therefore DO NOT DEPEND ON IT in a user
+// program!
+//
+// Acknowledgment: Google Test borrowed the idea of automatic test
+// registration from Barthelemy Dagenais' (barthelemy@prologique.com)
+// easyUnit framework.
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_H_
+#define GTEST_INCLUDE_GTEST_GTEST_H_
+
+#include <cstddef>
+#include <limits>
+#include <memory>
+#include <ostream>
+#include <type_traits>
+#include <vector>
+
+#include "gtest/internal/gtest-internal.h"
+#include "gtest/internal/gtest-string.h"
+#include "gtest/gtest-death-test.h"
+#include "gtest/gtest-matchers.h"
+#include "gtest/gtest-message.h"
+#include "gtest/gtest-param-test.h"
+#include "gtest/gtest-printers.h"
+#include "gtest/gtest_prod.h"
+#include "gtest/gtest-test-part.h"
+#include "gtest/gtest-typed-test.h"
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
+namespace testing {
+
+// Silence C4100 (unreferenced formal parameter) and 4805
+// unsafe mix of type 'const int' and type 'const bool'
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4805)
+# pragma warning(disable:4100)
+#endif
+
+
+// Declares the flags.
+
+// This flag temporary enables the disabled tests.
+GTEST_DECLARE_bool_(also_run_disabled_tests);
+
+// This flag brings the debugger on an assertion failure.
+GTEST_DECLARE_bool_(break_on_failure);
+
+// This flag controls whether Google Test catches all test-thrown exceptions
+// and logs them as failures.
+GTEST_DECLARE_bool_(catch_exceptions);
+
+// This flag enables using colors in terminal output. Available values are
+// "yes" to enable colors, "no" (disable colors), or "auto" (the default)
+// to let Google Test decide.
+GTEST_DECLARE_string_(color);
+
+// This flag sets up the filter to select by name using a glob pattern
+// the tests to run. If the filter is not given all tests are executed.
+GTEST_DECLARE_string_(filter);
+
+// This flag controls whether Google Test installs a signal handler that dumps
+// debugging information when fatal signals are raised.
+GTEST_DECLARE_bool_(install_failure_signal_handler);
+
+// This flag causes the Google Test to list tests. None of the tests listed
+// are actually run if the flag is provided.
+GTEST_DECLARE_bool_(list_tests);
+
+// This flag controls whether Google Test emits a detailed XML report to a file
+// in addition to its normal textual output.
+GTEST_DECLARE_string_(output);
+
+// This flags control whether Google Test prints the elapsed time for each
+// test.
+GTEST_DECLARE_bool_(print_time);
+
+// This flags control whether Google Test prints UTF8 characters as text.
+GTEST_DECLARE_bool_(print_utf8);
+
+// This flag specifies the random number seed.
+GTEST_DECLARE_int32_(random_seed);
+
+// This flag sets how many times the tests are repeated. The default value
+// is 1. If the value is -1 the tests are repeating forever.
+GTEST_DECLARE_int32_(repeat);
+
+// This flag controls whether Google Test includes Google Test internal
+// stack frames in failure stack traces.
+GTEST_DECLARE_bool_(show_internal_stack_frames);
+
+// When this flag is specified, tests' order is randomized on every iteration.
+GTEST_DECLARE_bool_(shuffle);
+
+// This flag specifies the maximum number of stack frames to be
+// printed in a failure message.
+GTEST_DECLARE_int32_(stack_trace_depth);
+
+// When this flag is specified, a failed assertion will throw an
+// exception if exceptions are enabled, or exit the program with a
+// non-zero code otherwise. For use with an external test framework.
+GTEST_DECLARE_bool_(throw_on_failure);
+
+// When this flag is set with a "host:port" string, on supported
+// platforms test results are streamed to the specified port on
+// the specified host machine.
+GTEST_DECLARE_string_(stream_result_to);
+
+#if GTEST_USE_OWN_FLAGFILE_FLAG_
+GTEST_DECLARE_string_(flagfile);
+#endif  // GTEST_USE_OWN_FLAGFILE_FLAG_
+
+// The upper limit for valid stack trace depths.
+const int kMaxStackTraceDepth = 100;
+
+namespace internal {
+
+class AssertHelper;
+class DefaultGlobalTestPartResultReporter;
+class ExecDeathTest;
+class NoExecDeathTest;
+class FinalSuccessChecker;
+class GTestFlagSaver;
+class StreamingListenerTest;
+class TestResultAccessor;
+class TestEventListenersAccessor;
+class TestEventRepeater;
+class UnitTestRecordPropertyTestHelper;
+class WindowsDeathTest;
+class FuchsiaDeathTest;
+class UnitTestImpl* GetUnitTestImpl();
+void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
+                                    const std::string& message);
+
+}  // namespace internal
+
+// The friend relationship of some of these classes is cyclic.
+// If we don't forward declare them the compiler might confuse the classes
+// in friendship clauses with same named classes on the scope.
+class Test;
+class TestSuite;
+
+// Old API is still available but deprecated
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+using TestCase = TestSuite;
+#endif
+class TestInfo;
+class UnitTest;
+
+// A class for indicating whether an assertion was successful.  When
+// the assertion wasn't successful, the AssertionResult object
+// remembers a non-empty message that describes how it failed.
+//
+// To create an instance of this class, use one of the factory functions
+// (AssertionSuccess() and AssertionFailure()).
+//
+// This class is useful for two purposes:
+//   1. Defining predicate functions to be used with Boolean test assertions
+//      EXPECT_TRUE/EXPECT_FALSE and their ASSERT_ counterparts
+//   2. Defining predicate-format functions to be
+//      used with predicate assertions (ASSERT_PRED_FORMAT*, etc).
+//
+// For example, if you define IsEven predicate:
+//
+//   testing::AssertionResult IsEven(int n) {
+//     if ((n % 2) == 0)
+//       return testing::AssertionSuccess();
+//     else
+//       return testing::AssertionFailure() << n << " is odd";
+//   }
+//
+// Then the failed expectation EXPECT_TRUE(IsEven(Fib(5)))
+// will print the message
+//
+//   Value of: IsEven(Fib(5))
+//     Actual: false (5 is odd)
+//   Expected: true
+//
+// instead of a more opaque
+//
+//   Value of: IsEven(Fib(5))
+//     Actual: false
+//   Expected: true
+//
+// in case IsEven is a simple Boolean predicate.
+//
+// If you expect your predicate to be reused and want to support informative
+// messages in EXPECT_FALSE and ASSERT_FALSE (negative assertions show up
+// about half as often as positive ones in our tests), supply messages for
+// both success and failure cases:
+//
+//   testing::AssertionResult IsEven(int n) {
+//     if ((n % 2) == 0)
+//       return testing::AssertionSuccess() << n << " is even";
+//     else
+//       return testing::AssertionFailure() << n << " is odd";
+//   }
+//
+// Then a statement EXPECT_FALSE(IsEven(Fib(6))) will print
+//
+//   Value of: IsEven(Fib(6))
+//     Actual: true (8 is even)
+//   Expected: false
+//
+// NB: Predicates that support negative Boolean assertions have reduced
+// performance in positive ones so be careful not to use them in tests
+// that have lots (tens of thousands) of positive Boolean assertions.
+//
+// To use this class with EXPECT_PRED_FORMAT assertions such as:
+//
+//   // Verifies that Foo() returns an even number.
+//   EXPECT_PRED_FORMAT1(IsEven, Foo());
+//
+// you need to define:
+//
+//   testing::AssertionResult IsEven(const char* expr, int n) {
+//     if ((n % 2) == 0)
+//       return testing::AssertionSuccess();
+//     else
+//       return testing::AssertionFailure()
+//         << "Expected: " << expr << " is even\n  Actual: it's " << n;
+//   }
+//
+// If Foo() returns 5, you will see the following message:
+//
+//   Expected: Foo() is even
+//     Actual: it's 5
+//
+class GTEST_API_ AssertionResult {
+ public:
+  // Copy constructor.
+  // Used in EXPECT_TRUE/FALSE(assertion_result).
+  AssertionResult(const AssertionResult& other);
+
+#if defined(_MSC_VER) && _MSC_VER < 1910
+  GTEST_DISABLE_MSC_WARNINGS_PUSH_(4800 /* forcing value to bool */)
+#endif
+
+  // Used in the EXPECT_TRUE/FALSE(bool_expression).
+  //
+  // T must be contextually convertible to bool.
+  //
+  // The second parameter prevents this overload from being considered if
+  // the argument is implicitly convertible to AssertionResult. In that case
+  // we want AssertionResult's copy constructor to be used.
+  template <typename T>
+  explicit AssertionResult(
+      const T& success,
+      typename std::enable_if<
+          !std::is_convertible<T, AssertionResult>::value>::type*
+      /*enabler*/
+      = nullptr)
+      : success_(success) {}
+
+#if defined(_MSC_VER) && _MSC_VER < 1910
+  GTEST_DISABLE_MSC_WARNINGS_POP_()
+#endif
+
+  // Assignment operator.
+  AssertionResult& operator=(AssertionResult other) {
+    swap(other);
+    return *this;
+  }
+
+  // Returns true if and only if the assertion succeeded.
+  operator bool() const { return success_; }  // NOLINT
+
+  // Returns the assertion's negation. Used with EXPECT/ASSERT_FALSE.
+  AssertionResult operator!() const;
+
+  // Returns the text streamed into this AssertionResult. Test assertions
+  // use it when they fail (i.e., the predicate's outcome doesn't match the
+  // assertion's expectation). When nothing has been streamed into the
+  // object, returns an empty string.
+  const char* message() const {
+    return message_.get() != nullptr ? message_->c_str() : "";
+  }
+  // Deprecated; please use message() instead.
+  const char* failure_message() const { return message(); }
+
+  // Streams a custom failure message into this object.
+  template <typename T> AssertionResult& operator<<(const T& value) {
+    AppendMessage(Message() << value);
+    return *this;
+  }
+
+  // Allows streaming basic output manipulators such as endl or flush into
+  // this object.
+  AssertionResult& operator<<(
+      ::std::ostream& (*basic_manipulator)(::std::ostream& stream)) {
+    AppendMessage(Message() << basic_manipulator);
+    return *this;
+  }
+
+ private:
+  // Appends the contents of message to message_.
+  void AppendMessage(const Message& a_message) {
+    if (message_.get() == nullptr) message_.reset(new ::std::string);
+    message_->append(a_message.GetString().c_str());
+  }
+
+  // Swap the contents of this AssertionResult with other.
+  void swap(AssertionResult& other);
+
+  // Stores result of the assertion predicate.
+  bool success_;
+  // Stores the message describing the condition in case the expectation
+  // construct is not satisfied with the predicate's outcome.
+  // Referenced via a pointer to avoid taking too much stack frame space
+  // with test assertions.
+  std::unique_ptr< ::std::string> message_;
+};
+
+// Makes a successful assertion result.
+GTEST_API_ AssertionResult AssertionSuccess();
+
+// Makes a failed assertion result.
+GTEST_API_ AssertionResult AssertionFailure();
+
+// Makes a failed assertion result with the given failure message.
+// Deprecated; use AssertionFailure() << msg.
+GTEST_API_ AssertionResult AssertionFailure(const Message& msg);
+
+}  // namespace testing
+
+// Includes the auto-generated header that implements a family of generic
+// predicate assertion macros. This include comes late because it relies on
+// APIs declared above.
+#include "gtest/gtest_pred_impl.h"
+
+namespace testing {
+
+// The abstract class that all tests inherit from.
+//
+// In Google Test, a unit test program contains one or many TestSuites, and
+// each TestSuite contains one or many Tests.
+//
+// When you define a test using the TEST macro, you don't need to
+// explicitly derive from Test - the TEST macro automatically does
+// this for you.
+//
+// The only time you derive from Test is when defining a test fixture
+// to be used in a TEST_F.  For example:
+//
+//   class FooTest : public testing::Test {
+//    protected:
+//     void SetUp() override { ... }
+//     void TearDown() override { ... }
+//     ...
+//   };
+//
+//   TEST_F(FooTest, Bar) { ... }
+//   TEST_F(FooTest, Baz) { ... }
+//
+// Test is not copyable.
+class GTEST_API_ Test {
+ public:
+  friend class TestInfo;
+
+  // The d'tor is virtual as we intend to inherit from Test.
+  virtual ~Test();
+
+  // Sets up the stuff shared by all tests in this test case.
+  //
+  // Google Test will call Foo::SetUpTestSuite() before running the first
+  // test in test case Foo.  Hence a sub-class can define its own
+  // SetUpTestSuite() method to shadow the one defined in the super
+  // class.
+  // Failures that happen during SetUpTestSuite are logged but otherwise
+  // ignored.
+  static void SetUpTestSuite() {}
+
+  // Tears down the stuff shared by all tests in this test suite.
+  //
+  // Google Test will call Foo::TearDownTestSuite() after running the last
+  // test in test case Foo.  Hence a sub-class can define its own
+  // TearDownTestSuite() method to shadow the one defined in the super
+  // class.
+  // Failures that happen during TearDownTestSuite are logged but otherwise
+  // ignored.
+  static void TearDownTestSuite() {}
+
+  // Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  static void TearDownTestCase() {}
+  static void SetUpTestCase() {}
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  // Returns true if and only if the current test has a fatal failure.
+  static bool HasFatalFailure();
+
+  // Returns true if and only if the current test has a non-fatal failure.
+  static bool HasNonfatalFailure();
+
+  // Returns true if and only if the current test was skipped.
+  static bool IsSkipped();
+
+  // Returns true if and only if the current test has a (either fatal or
+  // non-fatal) failure.
+  static bool HasFailure() { return HasFatalFailure() || HasNonfatalFailure(); }
+
+  // Logs a property for the current test, test suite, or for the entire
+  // invocation of the test program when used outside of the context of a
+  // test suite.  Only the last value for a given key is remembered.  These
+  // are public static so they can be called from utility functions that are
+  // not members of the test fixture.  Calls to RecordProperty made during
+  // lifespan of the test (from the moment its constructor starts to the
+  // moment its destructor finishes) will be output in XML as attributes of
+  // the <testcase> element.  Properties recorded from fixture's
+  // SetUpTestSuite or TearDownTestSuite are logged as attributes of the
+  // corresponding <testsuite> element.  Calls to RecordProperty made in the
+  // global context (before or after invocation of RUN_ALL_TESTS and from
+  // SetUp/TearDown method of Environment objects registered with Google
+  // Test) will be output as attributes of the <testsuites> element.
+  static void RecordProperty(const std::string& key, const std::string& value);
+  static void RecordProperty(const std::string& key, int value);
+
+ protected:
+  // Creates a Test object.
+  Test();
+
+  // Sets up the test fixture.
+  virtual void SetUp();
+
+  // Tears down the test fixture.
+  virtual void TearDown();
+
+ private:
+  // Returns true if and only if the current test has the same fixture class
+  // as the first test in the current test suite.
+  static bool HasSameFixtureClass();
+
+  // Runs the test after the test fixture has been set up.
+  //
+  // A sub-class must implement this to define the test logic.
+  //
+  // DO NOT OVERRIDE THIS FUNCTION DIRECTLY IN A USER PROGRAM.
+  // Instead, use the TEST or TEST_F macro.
+  virtual void TestBody() = 0;
+
+  // Sets up, executes, and tears down the test.
+  void Run();
+
+  // Deletes self.  We deliberately pick an unusual name for this
+  // internal method to avoid clashing with names used in user TESTs.
+  void DeleteSelf_() { delete this; }
+
+  const std::unique_ptr<GTEST_FLAG_SAVER_> gtest_flag_saver_;
+
+  // Often a user misspells SetUp() as Setup() and spends a long time
+  // wondering why it is never called by Google Test.  The declaration of
+  // the following method is solely for catching such an error at
+  // compile time:
+  //
+  //   - The return type is deliberately chosen to be not void, so it
+  //   will be a conflict if void Setup() is declared in the user's
+  //   test fixture.
+  //
+  //   - This method is private, so it will be another compiler error
+  //   if the method is called from the user's test fixture.
+  //
+  // DO NOT OVERRIDE THIS FUNCTION.
+  //
+  // If you see an error about overriding the following function or
+  // about it being private, you have mis-spelled SetUp() as Setup().
+  struct Setup_should_be_spelled_SetUp {};
+  virtual Setup_should_be_spelled_SetUp* Setup() { return nullptr; }
+
+  // We disallow copying Tests.
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(Test);
+};
+
+typedef internal::TimeInMillis TimeInMillis;
+
+// A copyable object representing a user specified test property which can be
+// output as a key/value string pair.
+//
+// Don't inherit from TestProperty as its destructor is not virtual.
+class TestProperty {
+ public:
+  // C'tor.  TestProperty does NOT have a default constructor.
+  // Always use this constructor (with parameters) to create a
+  // TestProperty object.
+  TestProperty(const std::string& a_key, const std::string& a_value) :
+    key_(a_key), value_(a_value) {
+  }
+
+  // Gets the user supplied key.
+  const char* key() const {
+    return key_.c_str();
+  }
+
+  // Gets the user supplied value.
+  const char* value() const {
+    return value_.c_str();
+  }
+
+  // Sets a new value, overriding the one supplied in the constructor.
+  void SetValue(const std::string& new_value) {
+    value_ = new_value;
+  }
+
+ private:
+  // The key supplied by the user.
+  std::string key_;
+  // The value supplied by the user.
+  std::string value_;
+};
+
+// The result of a single Test.  This includes a list of
+// TestPartResults, a list of TestProperties, a count of how many
+// death tests there are in the Test, and how much time it took to run
+// the Test.
+//
+// TestResult is not copyable.
+class GTEST_API_ TestResult {
+ public:
+  // Creates an empty TestResult.
+  TestResult();
+
+  // D'tor.  Do not inherit from TestResult.
+  ~TestResult();
+
+  // Gets the number of all test parts.  This is the sum of the number
+  // of successful test parts and the number of failed test parts.
+  int total_part_count() const;
+
+  // Returns the number of the test properties.
+  int test_property_count() const;
+
+  // Returns true if and only if the test passed (i.e. no test part failed).
+  bool Passed() const { return !Skipped() && !Failed(); }
+
+  // Returns true if and only if the test was skipped.
+  bool Skipped() const;
+
+  // Returns true if and only if the test failed.
+  bool Failed() const;
+
+  // Returns true if and only if the test fatally failed.
+  bool HasFatalFailure() const;
+
+  // Returns true if and only if the test has a non-fatal failure.
+  bool HasNonfatalFailure() const;
+
+  // Returns the elapsed time, in milliseconds.
+  TimeInMillis elapsed_time() const { return elapsed_time_; }
+
+  // Gets the time of the test case start, in ms from the start of the
+  // UNIX epoch.
+  TimeInMillis start_timestamp() const { return start_timestamp_; }
+
+  // Returns the i-th test part result among all the results. i can range from 0
+  // to total_part_count() - 1. If i is not in that range, aborts the program.
+  const TestPartResult& GetTestPartResult(int i) const;
+
+  // Returns the i-th test property. i can range from 0 to
+  // test_property_count() - 1. If i is not in that range, aborts the
+  // program.
+  const TestProperty& GetTestProperty(int i) const;
+
+ private:
+  friend class TestInfo;
+  friend class TestSuite;
+  friend class UnitTest;
+  friend class internal::DefaultGlobalTestPartResultReporter;
+  friend class internal::ExecDeathTest;
+  friend class internal::TestResultAccessor;
+  friend class internal::UnitTestImpl;
+  friend class internal::WindowsDeathTest;
+  friend class internal::FuchsiaDeathTest;
+
+  // Gets the vector of TestPartResults.
+  const std::vector<TestPartResult>& test_part_results() const {
+    return test_part_results_;
+  }
+
+  // Gets the vector of TestProperties.
+  const std::vector<TestProperty>& test_properties() const {
+    return test_properties_;
+  }
+
+  // Sets the start time.
+  void set_start_timestamp(TimeInMillis start) { start_timestamp_ = start; }
+
+  // Sets the elapsed time.
+  void set_elapsed_time(TimeInMillis elapsed) { elapsed_time_ = elapsed; }
+
+  // Adds a test property to the list. The property is validated and may add
+  // a non-fatal failure if invalid (e.g., if it conflicts with reserved
+  // key names). If a property is already recorded for the same key, the
+  // value will be updated, rather than storing multiple values for the same
+  // key.  xml_element specifies the element for which the property is being
+  // recorded and is used for validation.
+  void RecordProperty(const std::string& xml_element,
+                      const TestProperty& test_property);
+
+  // Adds a failure if the key is a reserved attribute of Google Test
+  // testsuite tags.  Returns true if the property is valid.
+  // FIXME: Validate attribute names are legal and human readable.
+  static bool ValidateTestProperty(const std::string& xml_element,
+                                   const TestProperty& test_property);
+
+  // Adds a test part result to the list.
+  void AddTestPartResult(const TestPartResult& test_part_result);
+
+  // Returns the death test count.
+  int death_test_count() const { return death_test_count_; }
+
+  // Increments the death test count, returning the new count.
+  int increment_death_test_count() { return ++death_test_count_; }
+
+  // Clears the test part results.
+  void ClearTestPartResults();
+
+  // Clears the object.
+  void Clear();
+
+  // Protects mutable state of the property vector and of owned
+  // properties, whose values may be updated.
+  internal::Mutex test_properites_mutex_;
+
+  // The vector of TestPartResults
+  std::vector<TestPartResult> test_part_results_;
+  // The vector of TestProperties
+  std::vector<TestProperty> test_properties_;
+  // Running count of death tests.
+  int death_test_count_;
+  // The start time, in milliseconds since UNIX Epoch.
+  TimeInMillis start_timestamp_;
+  // The elapsed time, in milliseconds.
+  TimeInMillis elapsed_time_;
+
+  // We disallow copying TestResult.
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestResult);
+};  // class TestResult
+
+// A TestInfo object stores the following information about a test:
+//
+//   Test suite name
+//   Test name
+//   Whether the test should be run
+//   A function pointer that creates the test object when invoked
+//   Test result
+//
+// The constructor of TestInfo registers itself with the UnitTest
+// singleton such that the RUN_ALL_TESTS() macro knows which tests to
+// run.
+class GTEST_API_ TestInfo {
+ public:
+  // Destructs a TestInfo object.  This function is not virtual, so
+  // don't inherit from TestInfo.
+  ~TestInfo();
+
+  // Returns the test suite name.
+  const char* test_suite_name() const { return test_suite_name_.c_str(); }
+
+// Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  const char* test_case_name() const { return test_suite_name(); }
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  // Returns the test name.
+  const char* name() const { return name_.c_str(); }
+
+  // Returns the name of the parameter type, or NULL if this is not a typed
+  // or a type-parameterized test.
+  const char* type_param() const {
+    if (type_param_.get() != nullptr) return type_param_->c_str();
+    return nullptr;
+  }
+
+  // Returns the text representation of the value parameter, or NULL if this
+  // is not a value-parameterized test.
+  const char* value_param() const {
+    if (value_param_.get() != nullptr) return value_param_->c_str();
+    return nullptr;
+  }
+
+  // Returns the file name where this test is defined.
+  const char* file() const { return location_.file.c_str(); }
+
+  // Returns the line where this test is defined.
+  int line() const { return location_.line; }
+
+  // Return true if this test should not be run because it's in another shard.
+  bool is_in_another_shard() const { return is_in_another_shard_; }
+
+  // Returns true if this test should run, that is if the test is not
+  // disabled (or it is disabled but the also_run_disabled_tests flag has
+  // been specified) and its full name matches the user-specified filter.
+  //
+  // Google Test allows the user to filter the tests by their full names.
+  // The full name of a test Bar in test suite Foo is defined as
+  // "Foo.Bar".  Only the tests that match the filter will run.
+  //
+  // A filter is a colon-separated list of glob (not regex) patterns,
+  // optionally followed by a '-' and a colon-separated list of
+  // negative patterns (tests to exclude).  A test is run if it
+  // matches one of the positive patterns and does not match any of
+  // the negative patterns.
+  //
+  // For example, *A*:Foo.* is a filter that matches any string that
+  // contains the character 'A' or starts with "Foo.".
+  bool should_run() const { return should_run_; }
+
+  // Returns true if and only if this test will appear in the XML report.
+  bool is_reportable() const {
+    // The XML report includes tests matching the filter, excluding those
+    // run in other shards.
+    return matches_filter_ && !is_in_another_shard_;
+  }
+
+  // Returns the result of the test.
+  const TestResult* result() const { return &result_; }
+
+ private:
+#if GTEST_HAS_DEATH_TEST
+  friend class internal::DefaultDeathTestFactory;
+#endif  // GTEST_HAS_DEATH_TEST
+  friend class Test;
+  friend class TestSuite;
+  friend class internal::UnitTestImpl;
+  friend class internal::StreamingListenerTest;
+  friend TestInfo* internal::MakeAndRegisterTestInfo(
+      const char* test_suite_name, const char* name, const char* type_param,
+      const char* value_param, internal::CodeLocation code_location,
+      internal::TypeId fixture_class_id, internal::SetUpTestSuiteFunc set_up_tc,
+      internal::TearDownTestSuiteFunc tear_down_tc,
+      internal::TestFactoryBase* factory);
+
+  // Constructs a TestInfo object. The newly constructed instance assumes
+  // ownership of the factory object.
+  TestInfo(const std::string& test_suite_name, const std::string& name,
+           const char* a_type_param,   // NULL if not a type-parameterized test
+           const char* a_value_param,  // NULL if not a value-parameterized test
+           internal::CodeLocation a_code_location,
+           internal::TypeId fixture_class_id,
+           internal::TestFactoryBase* factory);
+
+  // Increments the number of death tests encountered in this test so
+  // far.
+  int increment_death_test_count() {
+    return result_.increment_death_test_count();
+  }
+
+  // Creates the test object, runs it, records its result, and then
+  // deletes it.
+  void Run();
+
+  static void ClearTestResult(TestInfo* test_info) {
+    test_info->result_.Clear();
+  }
+
+  // These fields are immutable properties of the test.
+  const std::string test_suite_name_;    // test suite name
+  const std::string name_;               // Test name
+  // Name of the parameter type, or NULL if this is not a typed or a
+  // type-parameterized test.
+  const std::unique_ptr<const ::std::string> type_param_;
+  // Text representation of the value parameter, or NULL if this is not a
+  // value-parameterized test.
+  const std::unique_ptr<const ::std::string> value_param_;
+  internal::CodeLocation location_;
+  const internal::TypeId fixture_class_id_;  // ID of the test fixture class
+  bool should_run_;           // True if and only if this test should run
+  bool is_disabled_;          // True if and only if this test is disabled
+  bool matches_filter_;       // True if this test matches the
+                              // user-specified filter.
+  bool is_in_another_shard_;  // Will be run in another shard.
+  internal::TestFactoryBase* const factory_;  // The factory that creates
+                                              // the test object
+
+  // This field is mutable and needs to be reset before running the
+  // test for the second time.
+  TestResult result_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestInfo);
+};
+
+// A test suite, which consists of a vector of TestInfos.
+//
+// TestSuite is not copyable.
+class GTEST_API_ TestSuite {
+ public:
+  // Creates a TestSuite with the given name.
+  //
+  // TestSuite does NOT have a default constructor.  Always use this
+  // constructor to create a TestSuite object.
+  //
+  // Arguments:
+  //
+  //   name:         name of the test suite
+  //   a_type_param: the name of the test's type parameter, or NULL if
+  //                 this is not a type-parameterized test.
+  //   set_up_tc:    pointer to the function that sets up the test suite
+  //   tear_down_tc: pointer to the function that tears down the test suite
+  TestSuite(const char* name, const char* a_type_param,
+            internal::SetUpTestSuiteFunc set_up_tc,
+            internal::TearDownTestSuiteFunc tear_down_tc);
+
+  // Destructor of TestSuite.
+  virtual ~TestSuite();
+
+  // Gets the name of the TestSuite.
+  const char* name() const { return name_.c_str(); }
+
+  // Returns the name of the parameter type, or NULL if this is not a
+  // type-parameterized test suite.
+  const char* type_param() const {
+    if (type_param_.get() != nullptr) return type_param_->c_str();
+    return nullptr;
+  }
+
+  // Returns true if any test in this test suite should run.
+  bool should_run() const { return should_run_; }
+
+  // Gets the number of successful tests in this test suite.
+  int successful_test_count() const;
+
+  // Gets the number of skipped tests in this test suite.
+  int skipped_test_count() const;
+
+  // Gets the number of failed tests in this test suite.
+  int failed_test_count() const;
+
+  // Gets the number of disabled tests that will be reported in the XML report.
+  int reportable_disabled_test_count() const;
+
+  // Gets the number of disabled tests in this test suite.
+  int disabled_test_count() const;
+
+  // Gets the number of tests to be printed in the XML report.
+  int reportable_test_count() const;
+
+  // Get the number of tests in this test suite that should run.
+  int test_to_run_count() const;
+
+  // Gets the number of all tests in this test suite.
+  int total_test_count() const;
+
+  // Returns true if and only if the test suite passed.
+  bool Passed() const { return !Failed(); }
+
+  // Returns true if and only if the test suite failed.
+  bool Failed() const { return failed_test_count() > 0; }
+
+  // Returns the elapsed time, in milliseconds.
+  TimeInMillis elapsed_time() const { return elapsed_time_; }
+
+  // Gets the time of the test suite start, in ms from the start of the
+  // UNIX epoch.
+  TimeInMillis start_timestamp() const { return start_timestamp_; }
+
+  // Returns the i-th test among all the tests. i can range from 0 to
+  // total_test_count() - 1. If i is not in that range, returns NULL.
+  const TestInfo* GetTestInfo(int i) const;
+
+  // Returns the TestResult that holds test properties recorded during
+  // execution of SetUpTestSuite and TearDownTestSuite.
+  const TestResult& ad_hoc_test_result() const { return ad_hoc_test_result_; }
+
+ private:
+  friend class Test;
+  friend class internal::UnitTestImpl;
+
+  // Gets the (mutable) vector of TestInfos in this TestSuite.
+  std::vector<TestInfo*>& test_info_list() { return test_info_list_; }
+
+  // Gets the (immutable) vector of TestInfos in this TestSuite.
+  const std::vector<TestInfo*>& test_info_list() const {
+    return test_info_list_;
+  }
+
+  // Returns the i-th test among all the tests. i can range from 0 to
+  // total_test_count() - 1. If i is not in that range, returns NULL.
+  TestInfo* GetMutableTestInfo(int i);
+
+  // Sets the should_run member.
+  void set_should_run(bool should) { should_run_ = should; }
+
+  // Adds a TestInfo to this test suite.  Will delete the TestInfo upon
+  // destruction of the TestSuite object.
+  void AddTestInfo(TestInfo * test_info);
+
+  // Clears the results of all tests in this test suite.
+  void ClearResult();
+
+  // Clears the results of all tests in the given test suite.
+  static void ClearTestSuiteResult(TestSuite* test_suite) {
+    test_suite->ClearResult();
+  }
+
+  // Runs every test in this TestSuite.
+  void Run();
+
+  // Runs SetUpTestSuite() for this TestSuite.  This wrapper is needed
+  // for catching exceptions thrown from SetUpTestSuite().
+  void RunSetUpTestSuite() {
+    if (set_up_tc_ != nullptr) {
+      (*set_up_tc_)();
+    }
+  }
+
+  // Runs TearDownTestSuite() for this TestSuite.  This wrapper is
+  // needed for catching exceptions thrown from TearDownTestSuite().
+  void RunTearDownTestSuite() {
+    if (tear_down_tc_ != nullptr) {
+      (*tear_down_tc_)();
+    }
+  }
+
+  // Returns true if and only if test passed.
+  static bool TestPassed(const TestInfo* test_info) {
+    return test_info->should_run() && test_info->result()->Passed();
+  }
+
+  // Returns true if and only if test skipped.
+  static bool TestSkipped(const TestInfo* test_info) {
+    return test_info->should_run() && test_info->result()->Skipped();
+  }
+
+  // Returns true if and only if test failed.
+  static bool TestFailed(const TestInfo* test_info) {
+    return test_info->should_run() && test_info->result()->Failed();
+  }
+
+  // Returns true if and only if the test is disabled and will be reported in
+  // the XML report.
+  static bool TestReportableDisabled(const TestInfo* test_info) {
+    return test_info->is_reportable() && test_info->is_disabled_;
+  }
+
+  // Returns true if and only if test is disabled.
+  static bool TestDisabled(const TestInfo* test_info) {
+    return test_info->is_disabled_;
+  }
+
+  // Returns true if and only if this test will appear in the XML report.
+  static bool TestReportable(const TestInfo* test_info) {
+    return test_info->is_reportable();
+  }
+
+  // Returns true if the given test should run.
+  static bool ShouldRunTest(const TestInfo* test_info) {
+    return test_info->should_run();
+  }
+
+  // Shuffles the tests in this test suite.
+  void ShuffleTests(internal::Random* random);
+
+  // Restores the test order to before the first shuffle.
+  void UnshuffleTests();
+
+  // Name of the test suite.
+  std::string name_;
+  // Name of the parameter type, or NULL if this is not a typed or a
+  // type-parameterized test.
+  const std::unique_ptr<const ::std::string> type_param_;
+  // The vector of TestInfos in their original order.  It owns the
+  // elements in the vector.
+  std::vector<TestInfo*> test_info_list_;
+  // Provides a level of indirection for the test list to allow easy
+  // shuffling and restoring the test order.  The i-th element in this
+  // vector is the index of the i-th test in the shuffled test list.
+  std::vector<int> test_indices_;
+  // Pointer to the function that sets up the test suite.
+  internal::SetUpTestSuiteFunc set_up_tc_;
+  // Pointer to the function that tears down the test suite.
+  internal::TearDownTestSuiteFunc tear_down_tc_;
+  // True if and only if any test in this test suite should run.
+  bool should_run_;
+  // The start time, in milliseconds since UNIX Epoch.
+  TimeInMillis start_timestamp_;
+  // Elapsed time, in milliseconds.
+  TimeInMillis elapsed_time_;
+  // Holds test properties recorded during execution of SetUpTestSuite and
+  // TearDownTestSuite.
+  TestResult ad_hoc_test_result_;
+
+  // We disallow copying TestSuites.
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestSuite);
+};
+
+// An Environment object is capable of setting up and tearing down an
+// environment.  You should subclass this to define your own
+// environment(s).
+//
+// An Environment object does the set-up and tear-down in virtual
+// methods SetUp() and TearDown() instead of the constructor and the
+// destructor, as:
+//
+//   1. You cannot safely throw from a destructor.  This is a problem
+//      as in some cases Google Test is used where exceptions are enabled, and
+//      we may want to implement ASSERT_* using exceptions where they are
+//      available.
+//   2. You cannot use ASSERT_* directly in a constructor or
+//      destructor.
+class Environment {
+ public:
+  // The d'tor is virtual as we need to subclass Environment.
+  virtual ~Environment() {}
+
+  // Override this to define how to set up the environment.
+  virtual void SetUp() {}
+
+  // Override this to define how to tear down the environment.
+  virtual void TearDown() {}
+ private:
+  // If you see an error about overriding the following function or
+  // about it being private, you have mis-spelled SetUp() as Setup().
+  struct Setup_should_be_spelled_SetUp {};
+  virtual Setup_should_be_spelled_SetUp* Setup() { return nullptr; }
+};
+
+#if GTEST_HAS_EXCEPTIONS
+
+// Exception which can be thrown from TestEventListener::OnTestPartResult.
+class GTEST_API_ AssertionException
+    : public internal::GoogleTestFailureException {
+ public:
+  explicit AssertionException(const TestPartResult& result)
+      : GoogleTestFailureException(result) {}
+};
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
+// The interface for tracing execution of tests. The methods are organized in
+// the order the corresponding events are fired.
+class TestEventListener {
+ public:
+  virtual ~TestEventListener() {}
+
+  // Fired before any test activity starts.
+  virtual void OnTestProgramStart(const UnitTest& unit_test) = 0;
+
+  // Fired before each iteration of tests starts.  There may be more than
+  // one iteration if GTEST_FLAG(repeat) is set. iteration is the iteration
+  // index, starting from 0.
+  virtual void OnTestIterationStart(const UnitTest& unit_test,
+                                    int iteration) = 0;
+
+  // Fired before environment set-up for each iteration of tests starts.
+  virtual void OnEnvironmentsSetUpStart(const UnitTest& unit_test) = 0;
+
+  // Fired after environment set-up for each iteration of tests ends.
+  virtual void OnEnvironmentsSetUpEnd(const UnitTest& unit_test) = 0;
+
+  // Fired before the test suite starts.
+  virtual void OnTestSuiteStart(const TestSuite& /*test_suite*/) {}
+
+  //  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  virtual void OnTestCaseStart(const TestCase& /*test_case*/) {}
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  // Fired before the test starts.
+  virtual void OnTestStart(const TestInfo& test_info) = 0;
+
+  // Fired after a failed assertion or a SUCCEED() invocation.
+  // If you want to throw an exception from this function to skip to the next
+  // TEST, it must be AssertionException defined above, or inherited from it.
+  virtual void OnTestPartResult(const TestPartResult& test_part_result) = 0;
+
+  // Fired after the test ends.
+  virtual void OnTestEnd(const TestInfo& test_info) = 0;
+
+  // Fired after the test suite ends.
+  virtual void OnTestSuiteEnd(const TestSuite& /*test_suite*/) {}
+
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  virtual void OnTestCaseEnd(const TestCase& /*test_case*/) {}
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  // Fired before environment tear-down for each iteration of tests starts.
+  virtual void OnEnvironmentsTearDownStart(const UnitTest& unit_test) = 0;
+
+  // Fired after environment tear-down for each iteration of tests ends.
+  virtual void OnEnvironmentsTearDownEnd(const UnitTest& unit_test) = 0;
+
+  // Fired after each iteration of tests finishes.
+  virtual void OnTestIterationEnd(const UnitTest& unit_test,
+                                  int iteration) = 0;
+
+  // Fired after all test activities have ended.
+  virtual void OnTestProgramEnd(const UnitTest& unit_test) = 0;
+};
+
+// The convenience class for users who need to override just one or two
+// methods and are not concerned that a possible change to a signature of
+// the methods they override will not be caught during the build.  For
+// comments about each method please see the definition of TestEventListener
+// above.
+class EmptyTestEventListener : public TestEventListener {
+ public:
+  void OnTestProgramStart(const UnitTest& /*unit_test*/) override {}
+  void OnTestIterationStart(const UnitTest& /*unit_test*/,
+                            int /*iteration*/) override {}
+  void OnEnvironmentsSetUpStart(const UnitTest& /*unit_test*/) override {}
+  void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) override {}
+  void OnTestSuiteStart(const TestSuite& /*test_suite*/) override {}
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseStart(const TestCase& /*test_case*/) override {}
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  void OnTestStart(const TestInfo& /*test_info*/) override {}
+  void OnTestPartResult(const TestPartResult& /*test_part_result*/) override {}
+  void OnTestEnd(const TestInfo& /*test_info*/) override {}
+  void OnTestSuiteEnd(const TestSuite& /*test_suite*/) override {}
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseEnd(const TestCase& /*test_case*/) override {}
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  void OnEnvironmentsTearDownStart(const UnitTest& /*unit_test*/) override {}
+  void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) override {}
+  void OnTestIterationEnd(const UnitTest& /*unit_test*/,
+                          int /*iteration*/) override {}
+  void OnTestProgramEnd(const UnitTest& /*unit_test*/) override {}
+};
+
+// TestEventListeners lets users add listeners to track events in Google Test.
+class GTEST_API_ TestEventListeners {
+ public:
+  TestEventListeners();
+  ~TestEventListeners();
+
+  // Appends an event listener to the end of the list. Google Test assumes
+  // the ownership of the listener (i.e. it will delete the listener when
+  // the test program finishes).
+  void Append(TestEventListener* listener);
+
+  // Removes the given event listener from the list and returns it.  It then
+  // becomes the caller's responsibility to delete the listener. Returns
+  // NULL if the listener is not found in the list.
+  TestEventListener* Release(TestEventListener* listener);
+
+  // Returns the standard listener responsible for the default console
+  // output.  Can be removed from the listeners list to shut down default
+  // console output.  Note that removing this object from the listener list
+  // with Release transfers its ownership to the caller and makes this
+  // function return NULL the next time.
+  TestEventListener* default_result_printer() const {
+    return default_result_printer_;
+  }
+
+  // Returns the standard listener responsible for the default XML output
+  // controlled by the --gtest_output=xml flag.  Can be removed from the
+  // listeners list by users who want to shut down the default XML output
+  // controlled by this flag and substitute it with custom one.  Note that
+  // removing this object from the listener list with Release transfers its
+  // ownership to the caller and makes this function return NULL the next
+  // time.
+  TestEventListener* default_xml_generator() const {
+    return default_xml_generator_;
+  }
+
+ private:
+  friend class TestSuite;
+  friend class TestInfo;
+  friend class internal::DefaultGlobalTestPartResultReporter;
+  friend class internal::NoExecDeathTest;
+  friend class internal::TestEventListenersAccessor;
+  friend class internal::UnitTestImpl;
+
+  // Returns repeater that broadcasts the TestEventListener events to all
+  // subscribers.
+  TestEventListener* repeater();
+
+  // Sets the default_result_printer attribute to the provided listener.
+  // The listener is also added to the listener list and previous
+  // default_result_printer is removed from it and deleted. The listener can
+  // also be NULL in which case it will not be added to the list. Does
+  // nothing if the previous and the current listener objects are the same.
+  void SetDefaultResultPrinter(TestEventListener* listener);
+
+  // Sets the default_xml_generator attribute to the provided listener.  The
+  // listener is also added to the listener list and previous
+  // default_xml_generator is removed from it and deleted. The listener can
+  // also be NULL in which case it will not be added to the list. Does
+  // nothing if the previous and the current listener objects are the same.
+  void SetDefaultXmlGenerator(TestEventListener* listener);
+
+  // Controls whether events will be forwarded by the repeater to the
+  // listeners in the list.
+  bool EventForwardingEnabled() const;
+  void SuppressEventForwarding();
+
+  // The actual list of listeners.
+  internal::TestEventRepeater* repeater_;
+  // Listener responsible for the standard result output.
+  TestEventListener* default_result_printer_;
+  // Listener responsible for the creation of the XML output file.
+  TestEventListener* default_xml_generator_;
+
+  // We disallow copying TestEventListeners.
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestEventListeners);
+};
+
+// A UnitTest consists of a vector of TestSuites.
+//
+// This is a singleton class.  The only instance of UnitTest is
+// created when UnitTest::GetInstance() is first called.  This
+// instance is never deleted.
+//
+// UnitTest is not copyable.
+//
+// This class is thread-safe as long as the methods are called
+// according to their specification.
+class GTEST_API_ UnitTest {
+ public:
+  // Gets the singleton UnitTest object.  The first time this method
+  // is called, a UnitTest object is constructed and returned.
+  // Consecutive calls will return the same object.
+  static UnitTest* GetInstance();
+
+  // Runs all tests in this UnitTest object and prints the result.
+  // Returns 0 if successful, or 1 otherwise.
+  //
+  // This method can only be called from the main thread.
+  //
+  // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+  int Run() GTEST_MUST_USE_RESULT_;
+
+  // Returns the working directory when the first TEST() or TEST_F()
+  // was executed.  The UnitTest object owns the string.
+  const char* original_working_dir() const;
+
+  // Returns the TestSuite object for the test that's currently running,
+  // or NULL if no test is running.
+  const TestSuite* current_test_suite() const GTEST_LOCK_EXCLUDED_(mutex_);
+
+// Legacy API is still available but deprecated
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  const TestCase* current_test_case() const GTEST_LOCK_EXCLUDED_(mutex_);
+#endif
+
+  // Returns the TestInfo object for the test that's currently running,
+  // or NULL if no test is running.
+  const TestInfo* current_test_info() const
+      GTEST_LOCK_EXCLUDED_(mutex_);
+
+  // Returns the random seed used at the start of the current test run.
+  int random_seed() const;
+
+  // Returns the ParameterizedTestSuiteRegistry object used to keep track of
+  // value-parameterized tests and instantiate and register them.
+  //
+  // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+  internal::ParameterizedTestSuiteRegistry& parameterized_test_registry()
+      GTEST_LOCK_EXCLUDED_(mutex_);
+
+  // Gets the number of successful test suites.
+  int successful_test_suite_count() const;
+
+  // Gets the number of failed test suites.
+  int failed_test_suite_count() const;
+
+  // Gets the number of all test suites.
+  int total_test_suite_count() const;
+
+  // Gets the number of all test suites that contain at least one test
+  // that should run.
+  int test_suite_to_run_count() const;
+
+  //  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  int successful_test_case_count() const;
+  int failed_test_case_count() const;
+  int total_test_case_count() const;
+  int test_case_to_run_count() const;
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  // Gets the number of successful tests.
+  int successful_test_count() const;
+
+  // Gets the number of skipped tests.
+  int skipped_test_count() const;
+
+  // Gets the number of failed tests.
+  int failed_test_count() const;
+
+  // Gets the number of disabled tests that will be reported in the XML report.
+  int reportable_disabled_test_count() const;
+
+  // Gets the number of disabled tests.
+  int disabled_test_count() const;
+
+  // Gets the number of tests to be printed in the XML report.
+  int reportable_test_count() const;
+
+  // Gets the number of all tests.
+  int total_test_count() const;
+
+  // Gets the number of tests that should run.
+  int test_to_run_count() const;
+
+  // Gets the time of the test program start, in ms from the start of the
+  // UNIX epoch.
+  TimeInMillis start_timestamp() const;
+
+  // Gets the elapsed time, in milliseconds.
+  TimeInMillis elapsed_time() const;
+
+  // Returns true if and only if the unit test passed (i.e. all test suites
+  // passed).
+  bool Passed() const;
+
+  // Returns true if and only if the unit test failed (i.e. some test suite
+  // failed or something outside of all tests failed).
+  bool Failed() const;
+
+  // Gets the i-th test suite among all the test suites. i can range from 0 to
+  // total_test_suite_count() - 1. If i is not in that range, returns NULL.
+  const TestSuite* GetTestSuite(int i) const;
+
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  const TestCase* GetTestCase(int i) const;
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  // Returns the TestResult containing information on test failures and
+  // properties logged outside of individual test suites.
+  const TestResult& ad_hoc_test_result() const;
+
+  // Returns the list of event listeners that can be used to track events
+  // inside Google Test.
+  TestEventListeners& listeners();
+
+ private:
+  // Registers and returns a global test environment.  When a test
+  // program is run, all global test environments will be set-up in
+  // the order they were registered.  After all tests in the program
+  // have finished, all global test environments will be torn-down in
+  // the *reverse* order they were registered.
+  //
+  // The UnitTest object takes ownership of the given environment.
+  //
+  // This method can only be called from the main thread.
+  Environment* AddEnvironment(Environment* env);
+
+  // Adds a TestPartResult to the current TestResult object.  All
+  // Google Test assertion macros (e.g. ASSERT_TRUE, EXPECT_EQ, etc)
+  // eventually call this to report their results.  The user code
+  // should use the assertion macros instead of calling this directly.
+  void AddTestPartResult(TestPartResult::Type result_type,
+                         const char* file_name,
+                         int line_number,
+                         const std::string& message,
+                         const std::string& os_stack_trace)
+      GTEST_LOCK_EXCLUDED_(mutex_);
+
+  // Adds a TestProperty to the current TestResult object when invoked from
+  // inside a test, to current TestSuite's ad_hoc_test_result_ when invoked
+  // from SetUpTestSuite or TearDownTestSuite, or to the global property set
+  // when invoked elsewhere.  If the result already contains a property with
+  // the same key, the value will be updated.
+  void RecordProperty(const std::string& key, const std::string& value);
+
+  // Gets the i-th test suite among all the test suites. i can range from 0 to
+  // total_test_suite_count() - 1. If i is not in that range, returns NULL.
+  TestSuite* GetMutableTestSuite(int i);
+
+  // Accessors for the implementation object.
+  internal::UnitTestImpl* impl() { return impl_; }
+  const internal::UnitTestImpl* impl() const { return impl_; }
+
+  // These classes and functions are friends as they need to access private
+  // members of UnitTest.
+  friend class ScopedTrace;
+  friend class Test;
+  friend class internal::AssertHelper;
+  friend class internal::StreamingListenerTest;
+  friend class internal::UnitTestRecordPropertyTestHelper;
+  friend Environment* AddGlobalTestEnvironment(Environment* env);
+  friend internal::UnitTestImpl* internal::GetUnitTestImpl();
+  friend void internal::ReportFailureInUnknownLocation(
+      TestPartResult::Type result_type,
+      const std::string& message);
+
+  // Creates an empty UnitTest.
+  UnitTest();
+
+  // D'tor
+  virtual ~UnitTest();
+
+  // Pushes a trace defined by SCOPED_TRACE() on to the per-thread
+  // Google Test trace stack.
+  void PushGTestTrace(const internal::TraceInfo& trace)
+      GTEST_LOCK_EXCLUDED_(mutex_);
+
+  // Pops a trace from the per-thread Google Test trace stack.
+  void PopGTestTrace()
+      GTEST_LOCK_EXCLUDED_(mutex_);
+
+  // Protects mutable state in *impl_.  This is mutable as some const
+  // methods need to lock it too.
+  mutable internal::Mutex mutex_;
+
+  // Opaque implementation object.  This field is never changed once
+  // the object is constructed.  We don't mark it as const here, as
+  // doing so will cause a warning in the constructor of UnitTest.
+  // Mutable state in *impl_ is protected by mutex_.
+  internal::UnitTestImpl* impl_;
+
+  // We disallow copying UnitTest.
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(UnitTest);
+};
+
+// A convenient wrapper for adding an environment for the test
+// program.
+//
+// You should call this before RUN_ALL_TESTS() is called, probably in
+// main().  If you use gtest_main, you need to call this before main()
+// starts for it to take effect.  For example, you can define a global
+// variable like this:
+//
+//   testing::Environment* const foo_env =
+//       testing::AddGlobalTestEnvironment(new FooEnvironment);
+//
+// However, we strongly recommend you to write your own main() and
+// call AddGlobalTestEnvironment() there, as relying on initialization
+// of global variables makes the code harder to read and may cause
+// problems when you register multiple environments from different
+// translation units and the environments have dependencies among them
+// (remember that the compiler doesn't guarantee the order in which
+// global variables from different translation units are initialized).
+inline Environment* AddGlobalTestEnvironment(Environment* env) {
+  return UnitTest::GetInstance()->AddEnvironment(env);
+}
+
+// Initializes Google Test.  This must be called before calling
+// RUN_ALL_TESTS().  In particular, it parses a command line for the
+// flags that Google Test recognizes.  Whenever a Google Test flag is
+// seen, it is removed from argv, and *argc is decremented.
+//
+// No value is returned.  Instead, the Google Test flag variables are
+// updated.
+//
+// Calling the function for the second time has no user-visible effect.
+GTEST_API_ void InitGoogleTest(int* argc, char** argv);
+
+// This overloaded version can be used in Windows programs compiled in
+// UNICODE mode.
+GTEST_API_ void InitGoogleTest(int* argc, wchar_t** argv);
+
+// This overloaded version can be used on Arduino/embedded platforms where
+// there is no argc/argv.
+GTEST_API_ void InitGoogleTest();
+
+namespace internal {
+
+// Separate the error generating code from the code path to reduce the stack
+// frame size of CmpHelperEQ. This helps reduce the overhead of some sanitizers
+// when calling EXPECT_* in a tight loop.
+template <typename T1, typename T2>
+AssertionResult CmpHelperEQFailure(const char* lhs_expression,
+                                   const char* rhs_expression,
+                                   const T1& lhs, const T2& rhs) {
+  return EqFailure(lhs_expression,
+                   rhs_expression,
+                   FormatForComparisonFailureMessage(lhs, rhs),
+                   FormatForComparisonFailureMessage(rhs, lhs),
+                   false);
+}
+
+// This block of code defines operator==/!=
+// to block lexical scope lookup.
+// It prevents using invalid operator==/!= defined at namespace scope.
+struct faketype {};
+inline bool operator==(faketype, faketype) { return true; }
+inline bool operator!=(faketype, faketype) { return false; }
+
+// The helper function for {ASSERT|EXPECT}_EQ.
+template <typename T1, typename T2>
+AssertionResult CmpHelperEQ(const char* lhs_expression,
+                            const char* rhs_expression,
+                            const T1& lhs,
+                            const T2& rhs) {
+  if (lhs == rhs) {
+    return AssertionSuccess();
+  }
+
+  return CmpHelperEQFailure(lhs_expression, rhs_expression, lhs, rhs);
+}
+
+// With this overloaded version, we allow anonymous enums to be used
+// in {ASSERT|EXPECT}_EQ when compiled with gcc 4, as anonymous enums
+// can be implicitly cast to BiggestInt.
+GTEST_API_ AssertionResult CmpHelperEQ(const char* lhs_expression,
+                                       const char* rhs_expression,
+                                       BiggestInt lhs,
+                                       BiggestInt rhs);
+
+class EqHelper {
+ public:
+  // This templatized version is for the general case.
+  template <
+      typename T1, typename T2,
+      // Disable this overload for cases where one argument is a pointer
+      // and the other is the null pointer constant.
+      typename std::enable_if<!std::is_integral<T1>::value ||
+                              !std::is_pointer<T2>::value>::type* = nullptr>
+  static AssertionResult Compare(const char* lhs_expression,
+                                 const char* rhs_expression, const T1& lhs,
+                                 const T2& rhs) {
+    return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
+  }
+
+  // With this overloaded version, we allow anonymous enums to be used
+  // in {ASSERT|EXPECT}_EQ when compiled with gcc 4, as anonymous
+  // enums can be implicitly cast to BiggestInt.
+  //
+  // Even though its body looks the same as the above version, we
+  // cannot merge the two, as it will make anonymous enums unhappy.
+  static AssertionResult Compare(const char* lhs_expression,
+                                 const char* rhs_expression,
+                                 BiggestInt lhs,
+                                 BiggestInt rhs) {
+    return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
+  }
+
+  template <typename T>
+  static AssertionResult Compare(
+      const char* lhs_expression, const char* rhs_expression,
+      // Handle cases where '0' is used as a null pointer literal.
+      std::nullptr_t /* lhs */, T* rhs) {
+    // We already know that 'lhs' is a null pointer.
+    return CmpHelperEQ(lhs_expression, rhs_expression, static_cast<T*>(nullptr),
+                       rhs);
+  }
+};
+
+// Separate the error generating code from the code path to reduce the stack
+// frame size of CmpHelperOP. This helps reduce the overhead of some sanitizers
+// when calling EXPECT_OP in a tight loop.
+template <typename T1, typename T2>
+AssertionResult CmpHelperOpFailure(const char* expr1, const char* expr2,
+                                   const T1& val1, const T2& val2,
+                                   const char* op) {
+  return AssertionFailure()
+         << "Expected: (" << expr1 << ") " << op << " (" << expr2
+         << "), actual: " << FormatForComparisonFailureMessage(val1, val2)
+         << " vs " << FormatForComparisonFailureMessage(val2, val1);
+}
+
+// A macro for implementing the helper functions needed to implement
+// ASSERT_?? and EXPECT_??.  It is here just to avoid copy-and-paste
+// of similar code.
+//
+// For each templatized helper function, we also define an overloaded
+// version for BiggestInt in order to reduce code bloat and allow
+// anonymous enums to be used with {ASSERT|EXPECT}_?? when compiled
+// with gcc 4.
+//
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+
+#define GTEST_IMPL_CMP_HELPER_(op_name, op)\
+template <typename T1, typename T2>\
+AssertionResult CmpHelper##op_name(const char* expr1, const char* expr2, \
+                                   const T1& val1, const T2& val2) {\
+  if (val1 op val2) {\
+    return AssertionSuccess();\
+  } else {\
+    return CmpHelperOpFailure(expr1, expr2, val1, val2, #op);\
+  }\
+}\
+GTEST_API_ AssertionResult CmpHelper##op_name(\
+    const char* expr1, const char* expr2, BiggestInt val1, BiggestInt val2)
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+
+// Implements the helper function for {ASSERT|EXPECT}_NE
+GTEST_IMPL_CMP_HELPER_(NE, !=);
+// Implements the helper function for {ASSERT|EXPECT}_LE
+GTEST_IMPL_CMP_HELPER_(LE, <=);
+// Implements the helper function for {ASSERT|EXPECT}_LT
+GTEST_IMPL_CMP_HELPER_(LT, <);
+// Implements the helper function for {ASSERT|EXPECT}_GE
+GTEST_IMPL_CMP_HELPER_(GE, >=);
+// Implements the helper function for {ASSERT|EXPECT}_GT
+GTEST_IMPL_CMP_HELPER_(GT, >);
+
+#undef GTEST_IMPL_CMP_HELPER_
+
+// The helper function for {ASSERT|EXPECT}_STREQ.
+//
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+GTEST_API_ AssertionResult CmpHelperSTREQ(const char* s1_expression,
+                                          const char* s2_expression,
+                                          const char* s1,
+                                          const char* s2);
+
+// The helper function for {ASSERT|EXPECT}_STRCASEEQ.
+//
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+GTEST_API_ AssertionResult CmpHelperSTRCASEEQ(const char* s1_expression,
+                                              const char* s2_expression,
+                                              const char* s1,
+                                              const char* s2);
+
+// The helper function for {ASSERT|EXPECT}_STRNE.
+//
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+GTEST_API_ AssertionResult CmpHelperSTRNE(const char* s1_expression,
+                                          const char* s2_expression,
+                                          const char* s1,
+                                          const char* s2);
+
+// The helper function for {ASSERT|EXPECT}_STRCASENE.
+//
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+GTEST_API_ AssertionResult CmpHelperSTRCASENE(const char* s1_expression,
+                                              const char* s2_expression,
+                                              const char* s1,
+                                              const char* s2);
+
+
+// Helper function for *_STREQ on wide strings.
+//
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+GTEST_API_ AssertionResult CmpHelperSTREQ(const char* s1_expression,
+                                          const char* s2_expression,
+                                          const wchar_t* s1,
+                                          const wchar_t* s2);
+
+// Helper function for *_STRNE on wide strings.
+//
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+GTEST_API_ AssertionResult CmpHelperSTRNE(const char* s1_expression,
+                                          const char* s2_expression,
+                                          const wchar_t* s1,
+                                          const wchar_t* s2);
+
+}  // namespace internal
+
+// IsSubstring() and IsNotSubstring() are intended to be used as the
+// first argument to {EXPECT,ASSERT}_PRED_FORMAT2(), not by
+// themselves.  They check whether needle is a substring of haystack
+// (NULL is considered a substring of itself only), and return an
+// appropriate error message when they fail.
+//
+// The {needle,haystack}_expr arguments are the stringified
+// expressions that generated the two real arguments.
+GTEST_API_ AssertionResult IsSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const char* needle, const char* haystack);
+GTEST_API_ AssertionResult IsSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const wchar_t* needle, const wchar_t* haystack);
+GTEST_API_ AssertionResult IsNotSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const char* needle, const char* haystack);
+GTEST_API_ AssertionResult IsNotSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const wchar_t* needle, const wchar_t* haystack);
+GTEST_API_ AssertionResult IsSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const ::std::string& needle, const ::std::string& haystack);
+GTEST_API_ AssertionResult IsNotSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const ::std::string& needle, const ::std::string& haystack);
+
+#if GTEST_HAS_STD_WSTRING
+GTEST_API_ AssertionResult IsSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const ::std::wstring& needle, const ::std::wstring& haystack);
+GTEST_API_ AssertionResult IsNotSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const ::std::wstring& needle, const ::std::wstring& haystack);
+#endif  // GTEST_HAS_STD_WSTRING
+
+namespace internal {
+
+// Helper template function for comparing floating-points.
+//
+// Template parameter:
+//
+//   RawType: the raw floating-point type (either float or double)
+//
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+template <typename RawType>
+AssertionResult CmpHelperFloatingPointEQ(const char* lhs_expression,
+                                         const char* rhs_expression,
+                                         RawType lhs_value,
+                                         RawType rhs_value) {
+  const FloatingPoint<RawType> lhs(lhs_value), rhs(rhs_value);
+
+  if (lhs.AlmostEquals(rhs)) {
+    return AssertionSuccess();
+  }
+
+  ::std::stringstream lhs_ss;
+  lhs_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
+         << lhs_value;
+
+  ::std::stringstream rhs_ss;
+  rhs_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
+         << rhs_value;
+
+  return EqFailure(lhs_expression,
+                   rhs_expression,
+                   StringStreamToString(&lhs_ss),
+                   StringStreamToString(&rhs_ss),
+                   false);
+}
+
+// Helper function for implementing ASSERT_NEAR.
+//
+// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
+GTEST_API_ AssertionResult DoubleNearPredFormat(const char* expr1,
+                                                const char* expr2,
+                                                const char* abs_error_expr,
+                                                double val1,
+                                                double val2,
+                                                double abs_error);
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+// A class that enables one to stream messages to assertion macros
+class GTEST_API_ AssertHelper {
+ public:
+  // Constructor.
+  AssertHelper(TestPartResult::Type type,
+               const char* file,
+               int line,
+               const char* message);
+  ~AssertHelper();
+
+  // Message assignment is a semantic trick to enable assertion
+  // streaming; see the GTEST_MESSAGE_ macro below.
+  void operator=(const Message& message) const;
+
+ private:
+  // We put our data in a struct so that the size of the AssertHelper class can
+  // be as small as possible.  This is important because gcc is incapable of
+  // re-using stack space even for temporary variables, so every EXPECT_EQ
+  // reserves stack space for another AssertHelper.
+  struct AssertHelperData {
+    AssertHelperData(TestPartResult::Type t,
+                     const char* srcfile,
+                     int line_num,
+                     const char* msg)
+        : type(t), file(srcfile), line(line_num), message(msg) { }
+
+    TestPartResult::Type const type;
+    const char* const file;
+    int const line;
+    std::string const message;
+
+   private:
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(AssertHelperData);
+  };
+
+  AssertHelperData* const data_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(AssertHelper);
+};
+
+enum GTestColor { COLOR_DEFAULT, COLOR_RED, COLOR_GREEN, COLOR_YELLOW };
+
+GTEST_API_ GTEST_ATTRIBUTE_PRINTF_(2, 3) void ColoredPrintf(GTestColor color,
+                                                            const char* fmt,
+                                                            ...);
+
+}  // namespace internal
+
+// The pure interface class that all value-parameterized tests inherit from.
+// A value-parameterized class must inherit from both ::testing::Test and
+// ::testing::WithParamInterface. In most cases that just means inheriting
+// from ::testing::TestWithParam, but more complicated test hierarchies
+// may need to inherit from Test and WithParamInterface at different levels.
+//
+// This interface has support for accessing the test parameter value via
+// the GetParam() method.
+//
+// Use it with one of the parameter generator defining functions, like Range(),
+// Values(), ValuesIn(), Bool(), and Combine().
+//
+// class FooTest : public ::testing::TestWithParam<int> {
+//  protected:
+//   FooTest() {
+//     // Can use GetParam() here.
+//   }
+//   ~FooTest() override {
+//     // Can use GetParam() here.
+//   }
+//   void SetUp() override {
+//     // Can use GetParam() here.
+//   }
+//   void TearDown override {
+//     // Can use GetParam() here.
+//   }
+// };
+// TEST_P(FooTest, DoesBar) {
+//   // Can use GetParam() method here.
+//   Foo foo;
+//   ASSERT_TRUE(foo.DoesBar(GetParam()));
+// }
+// INSTANTIATE_TEST_SUITE_P(OneToTenRange, FooTest, ::testing::Range(1, 10));
+
+template <typename T>
+class WithParamInterface {
+ public:
+  typedef T ParamType;
+  virtual ~WithParamInterface() {}
+
+  // The current parameter value. Is also available in the test fixture's
+  // constructor.
+  static const ParamType& GetParam() {
+    GTEST_CHECK_(parameter_ != nullptr)
+        << "GetParam() can only be called inside a value-parameterized test "
+        << "-- did you intend to write TEST_P instead of TEST_F?";
+    return *parameter_;
+  }
+
+ private:
+  // Sets parameter value. The caller is responsible for making sure the value
+  // remains alive and unchanged throughout the current test.
+  static void SetParam(const ParamType* parameter) {
+    parameter_ = parameter;
+  }
+
+  // Static value used for accessing parameter during a test lifetime.
+  static const ParamType* parameter_;
+
+  // TestClass must be a subclass of WithParamInterface<T> and Test.
+  template <class TestClass> friend class internal::ParameterizedTestFactory;
+};
+
+template <typename T>
+const T* WithParamInterface<T>::parameter_ = nullptr;
+
+// Most value-parameterized classes can ignore the existence of
+// WithParamInterface, and can just inherit from ::testing::TestWithParam.
+
+template <typename T>
+class TestWithParam : public Test, public WithParamInterface<T> {
+};
+
+// Macros for indicating success/failure in test code.
+
+// Skips test in runtime.
+// Skipping test aborts current function.
+// Skipped tests are neither successful nor failed.
+#define GTEST_SKIP() GTEST_SKIP_("Skipped")
+
+// ADD_FAILURE unconditionally adds a failure to the current test.
+// SUCCEED generates a success - it doesn't automatically make the
+// current test successful, as a test is only successful when it has
+// no failure.
+//
+// EXPECT_* verifies that a certain condition is satisfied.  If not,
+// it behaves like ADD_FAILURE.  In particular:
+//
+//   EXPECT_TRUE  verifies that a Boolean condition is true.
+//   EXPECT_FALSE verifies that a Boolean condition is false.
+//
+// FAIL and ASSERT_* are similar to ADD_FAILURE and EXPECT_*, except
+// that they will also abort the current function on failure.  People
+// usually want the fail-fast behavior of FAIL and ASSERT_*, but those
+// writing data-driven tests often find themselves using ADD_FAILURE
+// and EXPECT_* more.
+
+// Generates a nonfatal failure with a generic message.
+#define ADD_FAILURE() GTEST_NONFATAL_FAILURE_("Failed")
+
+// Generates a nonfatal failure at the given source file location with
+// a generic message.
+#define ADD_FAILURE_AT(file, line) \
+  GTEST_MESSAGE_AT_(file, line, "Failed", \
+                    ::testing::TestPartResult::kNonFatalFailure)
+
+// Generates a fatal failure with a generic message.
+#define GTEST_FAIL() GTEST_FATAL_FAILURE_("Failed")
+
+// Like GTEST_FAIL(), but at the given source file location.
+#define GTEST_FAIL_AT(file, line)         \
+  GTEST_MESSAGE_AT_(file, line, "Failed", \
+                    ::testing::TestPartResult::kFatalFailure)
+
+// Define this macro to 1 to omit the definition of FAIL(), which is a
+// generic name and clashes with some other libraries.
+#if !GTEST_DONT_DEFINE_FAIL
+# define FAIL() GTEST_FAIL()
+#endif
+
+// Generates a success with a generic message.
+#define GTEST_SUCCEED() GTEST_SUCCESS_("Succeeded")
+
+// Define this macro to 1 to omit the definition of SUCCEED(), which
+// is a generic name and clashes with some other libraries.
+#if !GTEST_DONT_DEFINE_SUCCEED
+# define SUCCEED() GTEST_SUCCEED()
+#endif
+
+// Macros for testing exceptions.
+//
+//    * {ASSERT|EXPECT}_THROW(statement, expected_exception):
+//         Tests that the statement throws the expected exception.
+//    * {ASSERT|EXPECT}_NO_THROW(statement):
+//         Tests that the statement doesn't throw any exception.
+//    * {ASSERT|EXPECT}_ANY_THROW(statement):
+//         Tests that the statement throws an exception.
+
+#define EXPECT_THROW(statement, expected_exception) \
+  GTEST_TEST_THROW_(statement, expected_exception, GTEST_NONFATAL_FAILURE_)
+#define EXPECT_NO_THROW(statement) \
+  GTEST_TEST_NO_THROW_(statement, GTEST_NONFATAL_FAILURE_)
+#define EXPECT_ANY_THROW(statement) \
+  GTEST_TEST_ANY_THROW_(statement, GTEST_NONFATAL_FAILURE_)
+#define ASSERT_THROW(statement, expected_exception) \
+  GTEST_TEST_THROW_(statement, expected_exception, GTEST_FATAL_FAILURE_)
+#define ASSERT_NO_THROW(statement) \
+  GTEST_TEST_NO_THROW_(statement, GTEST_FATAL_FAILURE_)
+#define ASSERT_ANY_THROW(statement) \
+  GTEST_TEST_ANY_THROW_(statement, GTEST_FATAL_FAILURE_)
+
+// Boolean assertions. Condition can be either a Boolean expression or an
+// AssertionResult. For more information on how to use AssertionResult with
+// these macros see comments on that class.
+#define EXPECT_TRUE(condition) \
+  GTEST_TEST_BOOLEAN_(condition, #condition, false, true, \
+                      GTEST_NONFATAL_FAILURE_)
+#define EXPECT_FALSE(condition) \
+  GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \
+                      GTEST_NONFATAL_FAILURE_)
+#define ASSERT_TRUE(condition) \
+  GTEST_TEST_BOOLEAN_(condition, #condition, false, true, \
+                      GTEST_FATAL_FAILURE_)
+#define ASSERT_FALSE(condition) \
+  GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \
+                      GTEST_FATAL_FAILURE_)
+
+// Macros for testing equalities and inequalities.
+//
+//    * {ASSERT|EXPECT}_EQ(v1, v2): Tests that v1 == v2
+//    * {ASSERT|EXPECT}_NE(v1, v2): Tests that v1 != v2
+//    * {ASSERT|EXPECT}_LT(v1, v2): Tests that v1 < v2
+//    * {ASSERT|EXPECT}_LE(v1, v2): Tests that v1 <= v2
+//    * {ASSERT|EXPECT}_GT(v1, v2): Tests that v1 > v2
+//    * {ASSERT|EXPECT}_GE(v1, v2): Tests that v1 >= v2
+//
+// When they are not, Google Test prints both the tested expressions and
+// their actual values.  The values must be compatible built-in types,
+// or you will get a compiler error.  By "compatible" we mean that the
+// values can be compared by the respective operator.
+//
+// Note:
+//
+//   1. It is possible to make a user-defined type work with
+//   {ASSERT|EXPECT}_??(), but that requires overloading the
+//   comparison operators and is thus discouraged by the Google C++
+//   Usage Guide.  Therefore, you are advised to use the
+//   {ASSERT|EXPECT}_TRUE() macro to assert that two objects are
+//   equal.
+//
+//   2. The {ASSERT|EXPECT}_??() macros do pointer comparisons on
+//   pointers (in particular, C strings).  Therefore, if you use it
+//   with two C strings, you are testing how their locations in memory
+//   are related, not how their content is related.  To compare two C
+//   strings by content, use {ASSERT|EXPECT}_STR*().
+//
+//   3. {ASSERT|EXPECT}_EQ(v1, v2) is preferred to
+//   {ASSERT|EXPECT}_TRUE(v1 == v2), as the former tells you
+//   what the actual value is when it fails, and similarly for the
+//   other comparisons.
+//
+//   4. Do not depend on the order in which {ASSERT|EXPECT}_??()
+//   evaluate their arguments, which is undefined.
+//
+//   5. These macros evaluate their arguments exactly once.
+//
+// Examples:
+//
+//   EXPECT_NE(Foo(), 5);
+//   EXPECT_EQ(a_pointer, NULL);
+//   ASSERT_LT(i, array_size);
+//   ASSERT_GT(records.size(), 0) << "There is no record left.";
+
+#define EXPECT_EQ(val1, val2) \
+  EXPECT_PRED_FORMAT2(::testing::internal::EqHelper::Compare, val1, val2)
+#define EXPECT_NE(val1, val2) \
+  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperNE, val1, val2)
+#define EXPECT_LE(val1, val2) \
+  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2)
+#define EXPECT_LT(val1, val2) \
+  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2)
+#define EXPECT_GE(val1, val2) \
+  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2)
+#define EXPECT_GT(val1, val2) \
+  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2)
+
+#define GTEST_ASSERT_EQ(val1, val2) \
+  ASSERT_PRED_FORMAT2(::testing::internal::EqHelper::Compare, val1, val2)
+#define GTEST_ASSERT_NE(val1, val2) \
+  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperNE, val1, val2)
+#define GTEST_ASSERT_LE(val1, val2) \
+  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2)
+#define GTEST_ASSERT_LT(val1, val2) \
+  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2)
+#define GTEST_ASSERT_GE(val1, val2) \
+  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2)
+#define GTEST_ASSERT_GT(val1, val2) \
+  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2)
+
+// Define macro GTEST_DONT_DEFINE_ASSERT_XY to 1 to omit the definition of
+// ASSERT_XY(), which clashes with some users' own code.
+
+#if !GTEST_DONT_DEFINE_ASSERT_EQ
+# define ASSERT_EQ(val1, val2) GTEST_ASSERT_EQ(val1, val2)
+#endif
+
+#if !GTEST_DONT_DEFINE_ASSERT_NE
+# define ASSERT_NE(val1, val2) GTEST_ASSERT_NE(val1, val2)
+#endif
+
+#if !GTEST_DONT_DEFINE_ASSERT_LE
+# define ASSERT_LE(val1, val2) GTEST_ASSERT_LE(val1, val2)
+#endif
+
+#if !GTEST_DONT_DEFINE_ASSERT_LT
+# define ASSERT_LT(val1, val2) GTEST_ASSERT_LT(val1, val2)
+#endif
+
+#if !GTEST_DONT_DEFINE_ASSERT_GE
+# define ASSERT_GE(val1, val2) GTEST_ASSERT_GE(val1, val2)
+#endif
+
+#if !GTEST_DONT_DEFINE_ASSERT_GT
+# define ASSERT_GT(val1, val2) GTEST_ASSERT_GT(val1, val2)
+#endif
+
+// C-string Comparisons.  All tests treat NULL and any non-NULL string
+// as different.  Two NULLs are equal.
+//
+//    * {ASSERT|EXPECT}_STREQ(s1, s2):     Tests that s1 == s2
+//    * {ASSERT|EXPECT}_STRNE(s1, s2):     Tests that s1 != s2
+//    * {ASSERT|EXPECT}_STRCASEEQ(s1, s2): Tests that s1 == s2, ignoring case
+//    * {ASSERT|EXPECT}_STRCASENE(s1, s2): Tests that s1 != s2, ignoring case
+//
+// For wide or narrow string objects, you can use the
+// {ASSERT|EXPECT}_??() macros.
+//
+// Don't depend on the order in which the arguments are evaluated,
+// which is undefined.
+//
+// These macros evaluate their arguments exactly once.
+
+#define EXPECT_STREQ(s1, s2) \
+  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, s1, s2)
+#define EXPECT_STRNE(s1, s2) \
+  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2)
+#define EXPECT_STRCASEEQ(s1, s2) \
+  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, s1, s2)
+#define EXPECT_STRCASENE(s1, s2)\
+  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2)
+
+#define ASSERT_STREQ(s1, s2) \
+  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, s1, s2)
+#define ASSERT_STRNE(s1, s2) \
+  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2)
+#define ASSERT_STRCASEEQ(s1, s2) \
+  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, s1, s2)
+#define ASSERT_STRCASENE(s1, s2)\
+  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2)
+
+// Macros for comparing floating-point numbers.
+//
+//    * {ASSERT|EXPECT}_FLOAT_EQ(val1, val2):
+//         Tests that two float values are almost equal.
+//    * {ASSERT|EXPECT}_DOUBLE_EQ(val1, val2):
+//         Tests that two double values are almost equal.
+//    * {ASSERT|EXPECT}_NEAR(v1, v2, abs_error):
+//         Tests that v1 and v2 are within the given distance to each other.
+//
+// Google Test uses ULP-based comparison to automatically pick a default
+// error bound that is appropriate for the operands.  See the
+// FloatingPoint template class in gtest-internal.h if you are
+// interested in the implementation details.
+
+#define EXPECT_FLOAT_EQ(val1, val2)\
+  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \
+                      val1, val2)
+
+#define EXPECT_DOUBLE_EQ(val1, val2)\
+  EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \
+                      val1, val2)
+
+#define ASSERT_FLOAT_EQ(val1, val2)\
+  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \
+                      val1, val2)
+
+#define ASSERT_DOUBLE_EQ(val1, val2)\
+  ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \
+                      val1, val2)
+
+#define EXPECT_NEAR(val1, val2, abs_error)\
+  EXPECT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, \
+                      val1, val2, abs_error)
+
+#define ASSERT_NEAR(val1, val2, abs_error)\
+  ASSERT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, \
+                      val1, val2, abs_error)
+
+// These predicate format functions work on floating-point values, and
+// can be used in {ASSERT|EXPECT}_PRED_FORMAT2*(), e.g.
+//
+//   EXPECT_PRED_FORMAT2(testing::DoubleLE, Foo(), 5.0);
+
+// Asserts that val1 is less than, or almost equal to, val2.  Fails
+// otherwise.  In particular, it fails if either val1 or val2 is NaN.
+GTEST_API_ AssertionResult FloatLE(const char* expr1, const char* expr2,
+                                   float val1, float val2);
+GTEST_API_ AssertionResult DoubleLE(const char* expr1, const char* expr2,
+                                    double val1, double val2);
+
+
+#if GTEST_OS_WINDOWS
+
+// Macros that test for HRESULT failure and success, these are only useful
+// on Windows, and rely on Windows SDK macros and APIs to compile.
+//
+//    * {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED}(expr)
+//
+// When expr unexpectedly fails or succeeds, Google Test prints the
+// expected result and the actual result with both a human-readable
+// string representation of the error, if available, as well as the
+// hex result code.
+# define EXPECT_HRESULT_SUCCEEDED(expr) \
+    EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr))
+
+# define ASSERT_HRESULT_SUCCEEDED(expr) \
+    ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr))
+
+# define EXPECT_HRESULT_FAILED(expr) \
+    EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr))
+
+# define ASSERT_HRESULT_FAILED(expr) \
+    ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr))
+
+#endif  // GTEST_OS_WINDOWS
+
+// Macros that execute statement and check that it doesn't generate new fatal
+// failures in the current thread.
+//
+//   * {ASSERT|EXPECT}_NO_FATAL_FAILURE(statement);
+//
+// Examples:
+//
+//   EXPECT_NO_FATAL_FAILURE(Process());
+//   ASSERT_NO_FATAL_FAILURE(Process()) << "Process() failed";
+//
+#define ASSERT_NO_FATAL_FAILURE(statement) \
+    GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_FATAL_FAILURE_)
+#define EXPECT_NO_FATAL_FAILURE(statement) \
+    GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_NONFATAL_FAILURE_)
+
+// Causes a trace (including the given source file path and line number,
+// and the given message) to be included in every test failure message generated
+// by code in the scope of the lifetime of an instance of this class. The effect
+// is undone with the destruction of the instance.
+//
+// The message argument can be anything streamable to std::ostream.
+//
+// Example:
+//   testing::ScopedTrace trace("file.cc", 123, "message");
+//
+class GTEST_API_ ScopedTrace {
+ public:
+  // The c'tor pushes the given source file location and message onto
+  // a trace stack maintained by Google Test.
+
+  // Template version. Uses Message() to convert the values into strings.
+  // Slow, but flexible.
+  template <typename T>
+  ScopedTrace(const char* file, int line, const T& message) {
+    PushTrace(file, line, (Message() << message).GetString());
+  }
+
+  // Optimize for some known types.
+  ScopedTrace(const char* file, int line, const char* message) {
+    PushTrace(file, line, message ? message : "(null)");
+  }
+
+  ScopedTrace(const char* file, int line, const std::string& message) {
+    PushTrace(file, line, message);
+  }
+
+  // The d'tor pops the info pushed by the c'tor.
+  //
+  // Note that the d'tor is not virtual in order to be efficient.
+  // Don't inherit from ScopedTrace!
+  ~ScopedTrace();
+
+ private:
+  void PushTrace(const char* file, int line, std::string message);
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ScopedTrace);
+} GTEST_ATTRIBUTE_UNUSED_;  // A ScopedTrace object does its job in its
+                            // c'tor and d'tor.  Therefore it doesn't
+                            // need to be used otherwise.
+
+// Causes a trace (including the source file path, the current line
+// number, and the given message) to be included in every test failure
+// message generated by code in the current scope.  The effect is
+// undone when the control leaves the current scope.
+//
+// The message argument can be anything streamable to std::ostream.
+//
+// In the implementation, we include the current line number as part
+// of the dummy variable name, thus allowing multiple SCOPED_TRACE()s
+// to appear in the same block - as long as they are on different
+// lines.
+//
+// Assuming that each thread maintains its own stack of traces.
+// Therefore, a SCOPED_TRACE() would (correctly) only affect the
+// assertions in its own thread.
+#define SCOPED_TRACE(message) \
+  ::testing::ScopedTrace GTEST_CONCAT_TOKEN_(gtest_trace_, __LINE__)(\
+    __FILE__, __LINE__, (message))
+
+// Compile-time assertion for type equality.
+// StaticAssertTypeEq<type1, type2>() compiles if and only if type1 and type2
+// are the same type.  The value it returns is not interesting.
+//
+// Instead of making StaticAssertTypeEq a class template, we make it a
+// function template that invokes a helper class template.  This
+// prevents a user from misusing StaticAssertTypeEq<T1, T2> by
+// defining objects of that type.
+//
+// CAVEAT:
+//
+// When used inside a method of a class template,
+// StaticAssertTypeEq<T1, T2>() is effective ONLY IF the method is
+// instantiated.  For example, given:
+//
+//   template <typename T> class Foo {
+//    public:
+//     void Bar() { testing::StaticAssertTypeEq<int, T>(); }
+//   };
+//
+// the code:
+//
+//   void Test1() { Foo<bool> foo; }
+//
+// will NOT generate a compiler error, as Foo<bool>::Bar() is never
+// actually instantiated.  Instead, you need:
+//
+//   void Test2() { Foo<bool> foo; foo.Bar(); }
+//
+// to cause a compiler error.
+template <typename T1, typename T2>
+constexpr bool StaticAssertTypeEq() noexcept {
+  static_assert(std::is_same<T1, T2>::value,
+                "type1 and type2 are not the same type");
+  return true;
+}
+
+// Defines a test.
+//
+// The first parameter is the name of the test suite, and the second
+// parameter is the name of the test within the test suite.
+//
+// The convention is to end the test suite name with "Test".  For
+// example, a test suite for the Foo class can be named FooTest.
+//
+// Test code should appear between braces after an invocation of
+// this macro.  Example:
+//
+//   TEST(FooTest, InitializesCorrectly) {
+//     Foo foo;
+//     EXPECT_TRUE(foo.StatusIsOK());
+//   }
+
+// Note that we call GetTestTypeId() instead of GetTypeId<
+// ::testing::Test>() here to get the type ID of testing::Test.  This
+// is to work around a suspected linker bug when using Google Test as
+// a framework on Mac OS X.  The bug causes GetTypeId<
+// ::testing::Test>() to return different values depending on whether
+// the call is from the Google Test framework itself or from user test
+// code.  GetTestTypeId() is guaranteed to always return the same
+// value, as it always calls GetTypeId<>() from the Google Test
+// framework.
+#define GTEST_TEST(test_suite_name, test_name)             \
+  GTEST_TEST_(test_suite_name, test_name, ::testing::Test, \
+              ::testing::internal::GetTestTypeId())
+
+// Define this macro to 1 to omit the definition of TEST(), which
+// is a generic name and clashes with some other libraries.
+#if !GTEST_DONT_DEFINE_TEST
+#define TEST(test_suite_name, test_name) GTEST_TEST(test_suite_name, test_name)
+#endif
+
+// Defines a test that uses a test fixture.
+//
+// The first parameter is the name of the test fixture class, which
+// also doubles as the test suite name.  The second parameter is the
+// name of the test within the test suite.
+//
+// A test fixture class must be declared earlier.  The user should put
+// the test code between braces after using this macro.  Example:
+//
+//   class FooTest : public testing::Test {
+//    protected:
+//     void SetUp() override { b_.AddElement(3); }
+//
+//     Foo a_;
+//     Foo b_;
+//   };
+//
+//   TEST_F(FooTest, InitializesCorrectly) {
+//     EXPECT_TRUE(a_.StatusIsOK());
+//   }
+//
+//   TEST_F(FooTest, ReturnsElementCountCorrectly) {
+//     EXPECT_EQ(a_.size(), 0);
+//     EXPECT_EQ(b_.size(), 1);
+//   }
+//
+// GOOGLETEST_CM0011 DO NOT DELETE
+#define TEST_F(test_fixture, test_name)\
+  GTEST_TEST_(test_fixture, test_name, test_fixture, \
+              ::testing::internal::GetTypeId<test_fixture>())
+
+// Returns a path to temporary directory.
+// Tries to determine an appropriate directory for the platform.
+GTEST_API_ std::string TempDir();
+
+#ifdef _MSC_VER
+#  pragma warning(pop)
+#endif
+
+// Dynamically registers a test with the framework.
+//
+// This is an advanced API only to be used when the `TEST` macros are
+// insufficient. The macros should be preferred when possible, as they avoid
+// most of the complexity of calling this function.
+//
+// The `factory` argument is a factory callable (move-constructible) object or
+// function pointer that creates a new instance of the Test object. It
+// handles ownership to the caller. The signature of the callable is
+// `Fixture*()`, where `Fixture` is the test fixture class for the test. All
+// tests registered with the same `test_suite_name` must return the same
+// fixture type. This is checked at runtime.
+//
+// The framework will infer the fixture class from the factory and will call
+// the `SetUpTestSuite` and `TearDownTestSuite` for it.
+//
+// Must be called before `RUN_ALL_TESTS()` is invoked, otherwise behavior is
+// undefined.
+//
+// Use case example:
+//
+// class MyFixture : public ::testing::Test {
+//  public:
+//   // All of these optional, just like in regular macro usage.
+//   static void SetUpTestSuite() { ... }
+//   static void TearDownTestSuite() { ... }
+//   void SetUp() override { ... }
+//   void TearDown() override { ... }
+// };
+//
+// class MyTest : public MyFixture {
+//  public:
+//   explicit MyTest(int data) : data_(data) {}
+//   void TestBody() override { ... }
+//
+//  private:
+//   int data_;
+// };
+//
+// void RegisterMyTests(const std::vector<int>& values) {
+//   for (int v : values) {
+//     ::testing::RegisterTest(
+//         "MyFixture", ("Test" + std::to_string(v)).c_str(), nullptr,
+//         std::to_string(v).c_str(),
+//         __FILE__, __LINE__,
+//         // Important to use the fixture type as the return type here.
+//         [=]() -> MyFixture* { return new MyTest(v); });
+//   }
+// }
+// ...
+// int main(int argc, char** argv) {
+//   std::vector<int> values_to_test = LoadValuesFromConfig();
+//   RegisterMyTests(values_to_test);
+//   ...
+//   return RUN_ALL_TESTS();
+// }
+//
+template <int&... ExplicitParameterBarrier, typename Factory>
+TestInfo* RegisterTest(const char* test_suite_name, const char* test_name,
+                       const char* type_param, const char* value_param,
+                       const char* file, int line, Factory factory) {
+  using TestT = typename std::remove_pointer<decltype(factory())>::type;
+
+  class FactoryImpl : public internal::TestFactoryBase {
+   public:
+    explicit FactoryImpl(Factory f) : factory_(std::move(f)) {}
+    Test* CreateTest() override { return factory_(); }
+
+   private:
+    Factory factory_;
+  };
+
+  return internal::MakeAndRegisterTestInfo(
+      test_suite_name, test_name, type_param, value_param,
+      internal::CodeLocation(file, line), internal::GetTypeId<TestT>(),
+      internal::SuiteApiResolver<TestT>::GetSetUpCaseOrSuite(file, line),
+      internal::SuiteApiResolver<TestT>::GetTearDownCaseOrSuite(file, line),
+      new FactoryImpl{std::move(factory)});
+}
+
+}  // namespace testing
+
+// Use this function in main() to run all tests.  It returns 0 if all
+// tests are successful, or 1 otherwise.
+//
+// RUN_ALL_TESTS() should be invoked after the command line has been
+// parsed by InitGoogleTest().
+//
+// This function was formerly a macro; thus, it is in the global
+// namespace and has an all-caps name.
+int RUN_ALL_TESTS() GTEST_MUST_USE_RESULT_;
+
+inline int RUN_ALL_TESTS() {
+  return ::testing::UnitTest::GetInstance()->Run();
+}
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/gtest_pred_impl.h b/build/_deps/googletest-src/googletest/include/gtest/gtest_pred_impl.h
new file mode 100644
index 0000000000000000000000000000000000000000..d514255c733b76ae8c6cd01902d328f30b9a6de9
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/gtest_pred_impl.h
@@ -0,0 +1,359 @@
+// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// This file is AUTOMATICALLY GENERATED on 01/02/2019 by command
+// 'gen_gtest_pred_impl.py 5'.  DO NOT EDIT BY HAND!
+//
+// Implements a family of generic predicate assertion macros.
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
+#define GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
+
+#include "gtest/gtest.h"
+
+namespace testing {
+
+// This header implements a family of generic predicate assertion
+// macros:
+//
+//   ASSERT_PRED_FORMAT1(pred_format, v1)
+//   ASSERT_PRED_FORMAT2(pred_format, v1, v2)
+//   ...
+//
+// where pred_format is a function or functor that takes n (in the
+// case of ASSERT_PRED_FORMATn) values and their source expression
+// text, and returns a testing::AssertionResult.  See the definition
+// of ASSERT_EQ in gtest.h for an example.
+//
+// If you don't care about formatting, you can use the more
+// restrictive version:
+//
+//   ASSERT_PRED1(pred, v1)
+//   ASSERT_PRED2(pred, v1, v2)
+//   ...
+//
+// where pred is an n-ary function or functor that returns bool,
+// and the values v1, v2, ..., must support the << operator for
+// streaming to std::ostream.
+//
+// We also define the EXPECT_* variations.
+//
+// For now we only support predicates whose arity is at most 5.
+// Please email googletestframework@googlegroups.com if you need
+// support for higher arities.
+
+// GTEST_ASSERT_ is the basic statement to which all of the assertions
+// in this file reduce.  Don't use this in your code.
+
+#define GTEST_ASSERT_(expression, on_failure) \
+  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
+  if (const ::testing::AssertionResult gtest_ar = (expression)) \
+    ; \
+  else \
+    on_failure(gtest_ar.failure_message())
+
+
+// Helper function for implementing {EXPECT|ASSERT}_PRED1.  Don't use
+// this in your code.
+template <typename Pred,
+          typename T1>
+AssertionResult AssertPred1Helper(const char* pred_text,
+                                  const char* e1,
+                                  Pred pred,
+                                  const T1& v1) {
+  if (pred(v1)) return AssertionSuccess();
+
+  return AssertionFailure()
+         << pred_text << "(" << e1 << ") evaluates to false, where"
+         << "\n"
+         << e1 << " evaluates to " << ::testing::PrintToString(v1);
+}
+
+// Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT1.
+// Don't use this in your code.
+#define GTEST_PRED_FORMAT1_(pred_format, v1, on_failure)\
+  GTEST_ASSERT_(pred_format(#v1, v1), \
+                on_failure)
+
+// Internal macro for implementing {EXPECT|ASSERT}_PRED1.  Don't use
+// this in your code.
+#define GTEST_PRED1_(pred, v1, on_failure)\
+  GTEST_ASSERT_(::testing::AssertPred1Helper(#pred, \
+                                             #v1, \
+                                             pred, \
+                                             v1), on_failure)
+
+// Unary predicate assertion macros.
+#define EXPECT_PRED_FORMAT1(pred_format, v1) \
+  GTEST_PRED_FORMAT1_(pred_format, v1, GTEST_NONFATAL_FAILURE_)
+#define EXPECT_PRED1(pred, v1) \
+  GTEST_PRED1_(pred, v1, GTEST_NONFATAL_FAILURE_)
+#define ASSERT_PRED_FORMAT1(pred_format, v1) \
+  GTEST_PRED_FORMAT1_(pred_format, v1, GTEST_FATAL_FAILURE_)
+#define ASSERT_PRED1(pred, v1) \
+  GTEST_PRED1_(pred, v1, GTEST_FATAL_FAILURE_)
+
+
+
+// Helper function for implementing {EXPECT|ASSERT}_PRED2.  Don't use
+// this in your code.
+template <typename Pred,
+          typename T1,
+          typename T2>
+AssertionResult AssertPred2Helper(const char* pred_text,
+                                  const char* e1,
+                                  const char* e2,
+                                  Pred pred,
+                                  const T1& v1,
+                                  const T2& v2) {
+  if (pred(v1, v2)) return AssertionSuccess();
+
+  return AssertionFailure()
+         << pred_text << "(" << e1 << ", " << e2
+         << ") evaluates to false, where"
+         << "\n"
+         << e1 << " evaluates to " << ::testing::PrintToString(v1) << "\n"
+         << e2 << " evaluates to " << ::testing::PrintToString(v2);
+}
+
+// Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT2.
+// Don't use this in your code.
+#define GTEST_PRED_FORMAT2_(pred_format, v1, v2, on_failure)\
+  GTEST_ASSERT_(pred_format(#v1, #v2, v1, v2), \
+                on_failure)
+
+// Internal macro for implementing {EXPECT|ASSERT}_PRED2.  Don't use
+// this in your code.
+#define GTEST_PRED2_(pred, v1, v2, on_failure)\
+  GTEST_ASSERT_(::testing::AssertPred2Helper(#pred, \
+                                             #v1, \
+                                             #v2, \
+                                             pred, \
+                                             v1, \
+                                             v2), on_failure)
+
+// Binary predicate assertion macros.
+#define EXPECT_PRED_FORMAT2(pred_format, v1, v2) \
+  GTEST_PRED_FORMAT2_(pred_format, v1, v2, GTEST_NONFATAL_FAILURE_)
+#define EXPECT_PRED2(pred, v1, v2) \
+  GTEST_PRED2_(pred, v1, v2, GTEST_NONFATAL_FAILURE_)
+#define ASSERT_PRED_FORMAT2(pred_format, v1, v2) \
+  GTEST_PRED_FORMAT2_(pred_format, v1, v2, GTEST_FATAL_FAILURE_)
+#define ASSERT_PRED2(pred, v1, v2) \
+  GTEST_PRED2_(pred, v1, v2, GTEST_FATAL_FAILURE_)
+
+
+
+// Helper function for implementing {EXPECT|ASSERT}_PRED3.  Don't use
+// this in your code.
+template <typename Pred,
+          typename T1,
+          typename T2,
+          typename T3>
+AssertionResult AssertPred3Helper(const char* pred_text,
+                                  const char* e1,
+                                  const char* e2,
+                                  const char* e3,
+                                  Pred pred,
+                                  const T1& v1,
+                                  const T2& v2,
+                                  const T3& v3) {
+  if (pred(v1, v2, v3)) return AssertionSuccess();
+
+  return AssertionFailure()
+         << pred_text << "(" << e1 << ", " << e2 << ", " << e3
+         << ") evaluates to false, where"
+         << "\n"
+         << e1 << " evaluates to " << ::testing::PrintToString(v1) << "\n"
+         << e2 << " evaluates to " << ::testing::PrintToString(v2) << "\n"
+         << e3 << " evaluates to " << ::testing::PrintToString(v3);
+}
+
+// Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT3.
+// Don't use this in your code.
+#define GTEST_PRED_FORMAT3_(pred_format, v1, v2, v3, on_failure)\
+  GTEST_ASSERT_(pred_format(#v1, #v2, #v3, v1, v2, v3), \
+                on_failure)
+
+// Internal macro for implementing {EXPECT|ASSERT}_PRED3.  Don't use
+// this in your code.
+#define GTEST_PRED3_(pred, v1, v2, v3, on_failure)\
+  GTEST_ASSERT_(::testing::AssertPred3Helper(#pred, \
+                                             #v1, \
+                                             #v2, \
+                                             #v3, \
+                                             pred, \
+                                             v1, \
+                                             v2, \
+                                             v3), on_failure)
+
+// Ternary predicate assertion macros.
+#define EXPECT_PRED_FORMAT3(pred_format, v1, v2, v3) \
+  GTEST_PRED_FORMAT3_(pred_format, v1, v2, v3, GTEST_NONFATAL_FAILURE_)
+#define EXPECT_PRED3(pred, v1, v2, v3) \
+  GTEST_PRED3_(pred, v1, v2, v3, GTEST_NONFATAL_FAILURE_)
+#define ASSERT_PRED_FORMAT3(pred_format, v1, v2, v3) \
+  GTEST_PRED_FORMAT3_(pred_format, v1, v2, v3, GTEST_FATAL_FAILURE_)
+#define ASSERT_PRED3(pred, v1, v2, v3) \
+  GTEST_PRED3_(pred, v1, v2, v3, GTEST_FATAL_FAILURE_)
+
+
+
+// Helper function for implementing {EXPECT|ASSERT}_PRED4.  Don't use
+// this in your code.
+template <typename Pred,
+          typename T1,
+          typename T2,
+          typename T3,
+          typename T4>
+AssertionResult AssertPred4Helper(const char* pred_text,
+                                  const char* e1,
+                                  const char* e2,
+                                  const char* e3,
+                                  const char* e4,
+                                  Pred pred,
+                                  const T1& v1,
+                                  const T2& v2,
+                                  const T3& v3,
+                                  const T4& v4) {
+  if (pred(v1, v2, v3, v4)) return AssertionSuccess();
+
+  return AssertionFailure()
+         << pred_text << "(" << e1 << ", " << e2 << ", " << e3 << ", " << e4
+         << ") evaluates to false, where"
+         << "\n"
+         << e1 << " evaluates to " << ::testing::PrintToString(v1) << "\n"
+         << e2 << " evaluates to " << ::testing::PrintToString(v2) << "\n"
+         << e3 << " evaluates to " << ::testing::PrintToString(v3) << "\n"
+         << e4 << " evaluates to " << ::testing::PrintToString(v4);
+}
+
+// Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT4.
+// Don't use this in your code.
+#define GTEST_PRED_FORMAT4_(pred_format, v1, v2, v3, v4, on_failure)\
+  GTEST_ASSERT_(pred_format(#v1, #v2, #v3, #v4, v1, v2, v3, v4), \
+                on_failure)
+
+// Internal macro for implementing {EXPECT|ASSERT}_PRED4.  Don't use
+// this in your code.
+#define GTEST_PRED4_(pred, v1, v2, v3, v4, on_failure)\
+  GTEST_ASSERT_(::testing::AssertPred4Helper(#pred, \
+                                             #v1, \
+                                             #v2, \
+                                             #v3, \
+                                             #v4, \
+                                             pred, \
+                                             v1, \
+                                             v2, \
+                                             v3, \
+                                             v4), on_failure)
+
+// 4-ary predicate assertion macros.
+#define EXPECT_PRED_FORMAT4(pred_format, v1, v2, v3, v4) \
+  GTEST_PRED_FORMAT4_(pred_format, v1, v2, v3, v4, GTEST_NONFATAL_FAILURE_)
+#define EXPECT_PRED4(pred, v1, v2, v3, v4) \
+  GTEST_PRED4_(pred, v1, v2, v3, v4, GTEST_NONFATAL_FAILURE_)
+#define ASSERT_PRED_FORMAT4(pred_format, v1, v2, v3, v4) \
+  GTEST_PRED_FORMAT4_(pred_format, v1, v2, v3, v4, GTEST_FATAL_FAILURE_)
+#define ASSERT_PRED4(pred, v1, v2, v3, v4) \
+  GTEST_PRED4_(pred, v1, v2, v3, v4, GTEST_FATAL_FAILURE_)
+
+
+
+// Helper function for implementing {EXPECT|ASSERT}_PRED5.  Don't use
+// this in your code.
+template <typename Pred,
+          typename T1,
+          typename T2,
+          typename T3,
+          typename T4,
+          typename T5>
+AssertionResult AssertPred5Helper(const char* pred_text,
+                                  const char* e1,
+                                  const char* e2,
+                                  const char* e3,
+                                  const char* e4,
+                                  const char* e5,
+                                  Pred pred,
+                                  const T1& v1,
+                                  const T2& v2,
+                                  const T3& v3,
+                                  const T4& v4,
+                                  const T5& v5) {
+  if (pred(v1, v2, v3, v4, v5)) return AssertionSuccess();
+
+  return AssertionFailure()
+         << pred_text << "(" << e1 << ", " << e2 << ", " << e3 << ", " << e4
+         << ", " << e5 << ") evaluates to false, where"
+         << "\n"
+         << e1 << " evaluates to " << ::testing::PrintToString(v1) << "\n"
+         << e2 << " evaluates to " << ::testing::PrintToString(v2) << "\n"
+         << e3 << " evaluates to " << ::testing::PrintToString(v3) << "\n"
+         << e4 << " evaluates to " << ::testing::PrintToString(v4) << "\n"
+         << e5 << " evaluates to " << ::testing::PrintToString(v5);
+}
+
+// Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT5.
+// Don't use this in your code.
+#define GTEST_PRED_FORMAT5_(pred_format, v1, v2, v3, v4, v5, on_failure)\
+  GTEST_ASSERT_(pred_format(#v1, #v2, #v3, #v4, #v5, v1, v2, v3, v4, v5), \
+                on_failure)
+
+// Internal macro for implementing {EXPECT|ASSERT}_PRED5.  Don't use
+// this in your code.
+#define GTEST_PRED5_(pred, v1, v2, v3, v4, v5, on_failure)\
+  GTEST_ASSERT_(::testing::AssertPred5Helper(#pred, \
+                                             #v1, \
+                                             #v2, \
+                                             #v3, \
+                                             #v4, \
+                                             #v5, \
+                                             pred, \
+                                             v1, \
+                                             v2, \
+                                             v3, \
+                                             v4, \
+                                             v5), on_failure)
+
+// 5-ary predicate assertion macros.
+#define EXPECT_PRED_FORMAT5(pred_format, v1, v2, v3, v4, v5) \
+  GTEST_PRED_FORMAT5_(pred_format, v1, v2, v3, v4, v5, GTEST_NONFATAL_FAILURE_)
+#define EXPECT_PRED5(pred, v1, v2, v3, v4, v5) \
+  GTEST_PRED5_(pred, v1, v2, v3, v4, v5, GTEST_NONFATAL_FAILURE_)
+#define ASSERT_PRED_FORMAT5(pred_format, v1, v2, v3, v4, v5) \
+  GTEST_PRED_FORMAT5_(pred_format, v1, v2, v3, v4, v5, GTEST_FATAL_FAILURE_)
+#define ASSERT_PRED5(pred, v1, v2, v3, v4, v5) \
+  GTEST_PRED5_(pred, v1, v2, v3, v4, v5, GTEST_FATAL_FAILURE_)
+
+
+
+}  // namespace testing
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/gtest_prod.h b/build/_deps/googletest-src/googletest/include/gtest/gtest_prod.h
new file mode 100644
index 0000000000000000000000000000000000000000..e651671ebde859fc731b5459bdc0661af0757cb6
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/gtest_prod.h
@@ -0,0 +1,61 @@
+// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Google C++ Testing and Mocking Framework definitions useful in production code.
+// GOOGLETEST_CM0003 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_PROD_H_
+#define GTEST_INCLUDE_GTEST_GTEST_PROD_H_
+
+// When you need to test the private or protected members of a class,
+// use the FRIEND_TEST macro to declare your tests as friends of the
+// class.  For example:
+//
+// class MyClass {
+//  private:
+//   void PrivateMethod();
+//   FRIEND_TEST(MyClassTest, PrivateMethodWorks);
+// };
+//
+// class MyClassTest : public testing::Test {
+//   // ...
+// };
+//
+// TEST_F(MyClassTest, PrivateMethodWorks) {
+//   // Can call MyClass::PrivateMethod() here.
+// }
+//
+// Note: The test class must be in the same namespace as the class being tested.
+// For example, putting MyClassTest in an anonymous namespace will not work.
+
+#define FRIEND_TEST(test_case_name, test_name)\
+friend class test_case_name##_##test_name##_Test
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_PROD_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/internal/custom/README.md b/build/_deps/googletest-src/googletest/include/gtest/internal/custom/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..ff391fb4e2b5765cac8c6943359b15bbd5f4f149
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/internal/custom/README.md
@@ -0,0 +1,56 @@
+# Customization Points
+
+The custom directory is an injection point for custom user configurations.
+
+## Header `gtest.h`
+
+### The following macros can be defined:
+
+*   `GTEST_OS_STACK_TRACE_GETTER_` - The name of an implementation of
+    `OsStackTraceGetterInterface`.
+*   `GTEST_CUSTOM_TEMPDIR_FUNCTION_` - An override for `testing::TempDir()`. See
+    `testing::TempDir` for semantics and signature.
+
+## Header `gtest-port.h`
+
+The following macros can be defined:
+
+### Flag related macros:
+
+*   `GTEST_FLAG(flag_name)`
+*   `GTEST_USE_OWN_FLAGFILE_FLAG_` - Define to 0 when the system provides its
+    own flagfile flag parsing.
+*   `GTEST_DECLARE_bool_(name)`
+*   `GTEST_DECLARE_int32_(name)`
+*   `GTEST_DECLARE_string_(name)`
+*   `GTEST_DEFINE_bool_(name, default_val, doc)`
+*   `GTEST_DEFINE_int32_(name, default_val, doc)`
+*   `GTEST_DEFINE_string_(name, default_val, doc)`
+
+### Logging:
+
+*   `GTEST_LOG_(severity)`
+*   `GTEST_CHECK_(condition)`
+*   Functions `LogToStderr()` and `FlushInfoLog()` have to be provided too.
+
+### Threading:
+
+*   `GTEST_HAS_NOTIFICATION_` - Enabled if Notification is already provided.
+*   `GTEST_HAS_MUTEX_AND_THREAD_LOCAL_` - Enabled if `Mutex` and `ThreadLocal`
+    are already provided. Must also provide `GTEST_DECLARE_STATIC_MUTEX_(mutex)`
+    and `GTEST_DEFINE_STATIC_MUTEX_(mutex)`
+*   `GTEST_EXCLUSIVE_LOCK_REQUIRED_(locks)`
+*   `GTEST_LOCK_EXCLUDED_(locks)`
+
+### Underlying library support features
+
+*   `GTEST_HAS_CXXABI_H_`
+
+### Exporting API symbols:
+
+*   `GTEST_API_` - Specifier for exported symbols.
+
+## Header `gtest-printers.h`
+
+*   See documentation at `gtest/gtest-printers.h` for details on how to define a
+    custom printer.
diff --git a/build/_deps/googletest-src/googletest/include/gtest/internal/custom/gtest-port.h b/build/_deps/googletest-src/googletest/include/gtest/internal/custom/gtest-port.h
new file mode 100644
index 0000000000000000000000000000000000000000..cd85d956d2dc17bd537f2142340bdf58f4737118
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/internal/custom/gtest-port.h
@@ -0,0 +1,37 @@
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Injection point for custom user configurations. See README for details
+//
+// ** Custom implementation starts here **
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PORT_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PORT_H_
+
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PORT_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/internal/custom/gtest-printers.h b/build/_deps/googletest-src/googletest/include/gtest/internal/custom/gtest-printers.h
new file mode 100644
index 0000000000000000000000000000000000000000..eb4467abcabea7ff76f9d2d527387c9da810148b
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/internal/custom/gtest-printers.h
@@ -0,0 +1,42 @@
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// This file provides an injection point for custom printers in a local
+// installation of gTest.
+// It will be included from gtest-printers.h and the overrides in this file
+// will be visible to everyone.
+//
+// Injection point for custom user configurations. See README for details
+//
+// ** Custom implementation starts here **
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PRINTERS_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PRINTERS_H_
+
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_PRINTERS_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/internal/custom/gtest.h b/build/_deps/googletest-src/googletest/include/gtest/internal/custom/gtest.h
new file mode 100644
index 0000000000000000000000000000000000000000..4c8e07be23f1fd6159afef2eefd7444034dd0604
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/internal/custom/gtest.h
@@ -0,0 +1,37 @@
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Injection point for custom user configurations. See README for details
+//
+// ** Custom implementation starts here **
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_H_
+
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_CUSTOM_GTEST_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-death-test-internal.h b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-death-test-internal.h
new file mode 100644
index 0000000000000000000000000000000000000000..68bd3530618f264c44749a7796ce5ee581751e62
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-death-test-internal.h
@@ -0,0 +1,304 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This header file defines internal utilities needed for implementing
+// death tests.  They are subject to change without notice.
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_
+
+#include "gtest/gtest-matchers.h"
+#include "gtest/internal/gtest-internal.h"
+
+#include <stdio.h>
+#include <memory>
+
+namespace testing {
+namespace internal {
+
+GTEST_DECLARE_string_(internal_run_death_test);
+
+// Names of the flags (needed for parsing Google Test flags).
+const char kDeathTestStyleFlag[] = "death_test_style";
+const char kDeathTestUseFork[] = "death_test_use_fork";
+const char kInternalRunDeathTestFlag[] = "internal_run_death_test";
+
+#if GTEST_HAS_DEATH_TEST
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
+// DeathTest is a class that hides much of the complexity of the
+// GTEST_DEATH_TEST_ macro.  It is abstract; its static Create method
+// returns a concrete class that depends on the prevailing death test
+// style, as defined by the --gtest_death_test_style and/or
+// --gtest_internal_run_death_test flags.
+
+// In describing the results of death tests, these terms are used with
+// the corresponding definitions:
+//
+// exit status:  The integer exit information in the format specified
+//               by wait(2)
+// exit code:    The integer code passed to exit(3), _exit(2), or
+//               returned from main()
+class GTEST_API_ DeathTest {
+ public:
+  // Create returns false if there was an error determining the
+  // appropriate action to take for the current death test; for example,
+  // if the gtest_death_test_style flag is set to an invalid value.
+  // The LastMessage method will return a more detailed message in that
+  // case.  Otherwise, the DeathTest pointer pointed to by the "test"
+  // argument is set.  If the death test should be skipped, the pointer
+  // is set to NULL; otherwise, it is set to the address of a new concrete
+  // DeathTest object that controls the execution of the current test.
+  static bool Create(const char* statement, Matcher<const std::string&> matcher,
+                     const char* file, int line, DeathTest** test);
+  DeathTest();
+  virtual ~DeathTest() { }
+
+  // A helper class that aborts a death test when it's deleted.
+  class ReturnSentinel {
+   public:
+    explicit ReturnSentinel(DeathTest* test) : test_(test) { }
+    ~ReturnSentinel() { test_->Abort(TEST_ENCOUNTERED_RETURN_STATEMENT); }
+   private:
+    DeathTest* const test_;
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(ReturnSentinel);
+  } GTEST_ATTRIBUTE_UNUSED_;
+
+  // An enumeration of possible roles that may be taken when a death
+  // test is encountered.  EXECUTE means that the death test logic should
+  // be executed immediately.  OVERSEE means that the program should prepare
+  // the appropriate environment for a child process to execute the death
+  // test, then wait for it to complete.
+  enum TestRole { OVERSEE_TEST, EXECUTE_TEST };
+
+  // An enumeration of the three reasons that a test might be aborted.
+  enum AbortReason {
+    TEST_ENCOUNTERED_RETURN_STATEMENT,
+    TEST_THREW_EXCEPTION,
+    TEST_DID_NOT_DIE
+  };
+
+  // Assumes one of the above roles.
+  virtual TestRole AssumeRole() = 0;
+
+  // Waits for the death test to finish and returns its status.
+  virtual int Wait() = 0;
+
+  // Returns true if the death test passed; that is, the test process
+  // exited during the test, its exit status matches a user-supplied
+  // predicate, and its stderr output matches a user-supplied regular
+  // expression.
+  // The user-supplied predicate may be a macro expression rather
+  // than a function pointer or functor, or else Wait and Passed could
+  // be combined.
+  virtual bool Passed(bool exit_status_ok) = 0;
+
+  // Signals that the death test did not die as expected.
+  virtual void Abort(AbortReason reason) = 0;
+
+  // Returns a human-readable outcome message regarding the outcome of
+  // the last death test.
+  static const char* LastMessage();
+
+  static void set_last_death_test_message(const std::string& message);
+
+ private:
+  // A string containing a description of the outcome of the last death test.
+  static std::string last_death_test_message_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(DeathTest);
+};
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
+// Factory interface for death tests.  May be mocked out for testing.
+class DeathTestFactory {
+ public:
+  virtual ~DeathTestFactory() { }
+  virtual bool Create(const char* statement,
+                      Matcher<const std::string&> matcher, const char* file,
+                      int line, DeathTest** test) = 0;
+};
+
+// A concrete DeathTestFactory implementation for normal use.
+class DefaultDeathTestFactory : public DeathTestFactory {
+ public:
+  bool Create(const char* statement, Matcher<const std::string&> matcher,
+              const char* file, int line, DeathTest** test) override;
+};
+
+// Returns true if exit_status describes a process that was terminated
+// by a signal, or exited normally with a nonzero exit code.
+GTEST_API_ bool ExitedUnsuccessfully(int exit_status);
+
+// A string passed to EXPECT_DEATH (etc.) is caught by one of these overloads
+// and interpreted as a regex (rather than an Eq matcher) for legacy
+// compatibility.
+inline Matcher<const ::std::string&> MakeDeathTestMatcher(
+    ::testing::internal::RE regex) {
+  return ContainsRegex(regex.pattern());
+}
+inline Matcher<const ::std::string&> MakeDeathTestMatcher(const char* regex) {
+  return ContainsRegex(regex);
+}
+inline Matcher<const ::std::string&> MakeDeathTestMatcher(
+    const ::std::string& regex) {
+  return ContainsRegex(regex);
+}
+
+// If a Matcher<const ::std::string&> is passed to EXPECT_DEATH (etc.), it's
+// used directly.
+inline Matcher<const ::std::string&> MakeDeathTestMatcher(
+    Matcher<const ::std::string&> matcher) {
+  return matcher;
+}
+
+// Traps C++ exceptions escaping statement and reports them as test
+// failures. Note that trapping SEH exceptions is not implemented here.
+# if GTEST_HAS_EXCEPTIONS
+#  define GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, death_test) \
+  try { \
+    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
+  } catch (const ::std::exception& gtest_exception) { \
+    fprintf(\
+        stderr, \
+        "\n%s: Caught std::exception-derived exception escaping the " \
+        "death test statement. Exception message: %s\n", \
+        ::testing::internal::FormatFileLocation(__FILE__, __LINE__).c_str(), \
+        gtest_exception.what()); \
+    fflush(stderr); \
+    death_test->Abort(::testing::internal::DeathTest::TEST_THREW_EXCEPTION); \
+  } catch (...) { \
+    death_test->Abort(::testing::internal::DeathTest::TEST_THREW_EXCEPTION); \
+  }
+
+# else
+#  define GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, death_test) \
+  GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement)
+
+# endif
+
+// This macro is for implementing ASSERT_DEATH*, EXPECT_DEATH*,
+// ASSERT_EXIT*, and EXPECT_EXIT*.
+#define GTEST_DEATH_TEST_(statement, predicate, regex_or_matcher, fail)        \
+  GTEST_AMBIGUOUS_ELSE_BLOCKER_                                                \
+  if (::testing::internal::AlwaysTrue()) {                                     \
+    ::testing::internal::DeathTest* gtest_dt;                                  \
+    if (!::testing::internal::DeathTest::Create(                               \
+            #statement,                                                        \
+            ::testing::internal::MakeDeathTestMatcher(regex_or_matcher),       \
+            __FILE__, __LINE__, &gtest_dt)) {                                  \
+      goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__);                        \
+    }                                                                          \
+    if (gtest_dt != nullptr) {                                                 \
+      std::unique_ptr< ::testing::internal::DeathTest> gtest_dt_ptr(gtest_dt); \
+      switch (gtest_dt->AssumeRole()) {                                        \
+        case ::testing::internal::DeathTest::OVERSEE_TEST:                     \
+          if (!gtest_dt->Passed(predicate(gtest_dt->Wait()))) {                \
+            goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__);                  \
+          }                                                                    \
+          break;                                                               \
+        case ::testing::internal::DeathTest::EXECUTE_TEST: {                   \
+          ::testing::internal::DeathTest::ReturnSentinel gtest_sentinel(       \
+              gtest_dt);                                                       \
+          GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, gtest_dt);            \
+          gtest_dt->Abort(::testing::internal::DeathTest::TEST_DID_NOT_DIE);   \
+          break;                                                               \
+        }                                                                      \
+        default:                                                               \
+          break;                                                               \
+      }                                                                        \
+    }                                                                          \
+  } else                                                                       \
+    GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__)                                \
+        : fail(::testing::internal::DeathTest::LastMessage())
+// The symbol "fail" here expands to something into which a message
+// can be streamed.
+
+// This macro is for implementing ASSERT/EXPECT_DEBUG_DEATH when compiled in
+// NDEBUG mode. In this case we need the statements to be executed and the macro
+// must accept a streamed message even though the message is never printed.
+// The regex object is not evaluated, but it is used to prevent "unused"
+// warnings and to avoid an expression that doesn't compile in debug mode.
+#define GTEST_EXECUTE_STATEMENT_(statement, regex_or_matcher)    \
+  GTEST_AMBIGUOUS_ELSE_BLOCKER_                                  \
+  if (::testing::internal::AlwaysTrue()) {                       \
+    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement);   \
+  } else if (!::testing::internal::AlwaysTrue()) {               \
+    ::testing::internal::MakeDeathTestMatcher(regex_or_matcher); \
+  } else                                                         \
+    ::testing::Message()
+
+// A class representing the parsed contents of the
+// --gtest_internal_run_death_test flag, as it existed when
+// RUN_ALL_TESTS was called.
+class InternalRunDeathTestFlag {
+ public:
+  InternalRunDeathTestFlag(const std::string& a_file,
+                           int a_line,
+                           int an_index,
+                           int a_write_fd)
+      : file_(a_file), line_(a_line), index_(an_index),
+        write_fd_(a_write_fd) {}
+
+  ~InternalRunDeathTestFlag() {
+    if (write_fd_ >= 0)
+      posix::Close(write_fd_);
+  }
+
+  const std::string& file() const { return file_; }
+  int line() const { return line_; }
+  int index() const { return index_; }
+  int write_fd() const { return write_fd_; }
+
+ private:
+  std::string file_;
+  int line_;
+  int index_;
+  int write_fd_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(InternalRunDeathTestFlag);
+};
+
+// Returns a newly created InternalRunDeathTestFlag object with fields
+// initialized from the GTEST_FLAG(internal_run_death_test) flag if
+// the flag is specified; otherwise returns NULL.
+InternalRunDeathTestFlag* ParseInternalRunDeathTestFlag();
+
+#endif  // GTEST_HAS_DEATH_TEST
+
+}  // namespace internal
+}  // namespace testing
+
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-filepath.h b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-filepath.h
new file mode 100644
index 0000000000000000000000000000000000000000..c11b101516e530aaa9510b65d97dd67bbc0690a6
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-filepath.h
@@ -0,0 +1,211 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Google Test filepath utilities
+//
+// This header file declares classes and functions used internally by
+// Google Test.  They are subject to change without notice.
+//
+// This file is #included in gtest/internal/gtest-internal.h.
+// Do not include this header file separately!
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
+
+#include "gtest/internal/gtest-string.h"
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
+namespace testing {
+namespace internal {
+
+// FilePath - a class for file and directory pathname manipulation which
+// handles platform-specific conventions (like the pathname separator).
+// Used for helper functions for naming files in a directory for xml output.
+// Except for Set methods, all methods are const or static, which provides an
+// "immutable value object" -- useful for peace of mind.
+// A FilePath with a value ending in a path separator ("like/this/") represents
+// a directory, otherwise it is assumed to represent a file. In either case,
+// it may or may not represent an actual file or directory in the file system.
+// Names are NOT checked for syntax correctness -- no checking for illegal
+// characters, malformed paths, etc.
+
+class GTEST_API_ FilePath {
+ public:
+  FilePath() : pathname_("") { }
+  FilePath(const FilePath& rhs) : pathname_(rhs.pathname_) { }
+
+  explicit FilePath(const std::string& pathname) : pathname_(pathname) {
+    Normalize();
+  }
+
+  FilePath& operator=(const FilePath& rhs) {
+    Set(rhs);
+    return *this;
+  }
+
+  void Set(const FilePath& rhs) {
+    pathname_ = rhs.pathname_;
+  }
+
+  const std::string& string() const { return pathname_; }
+  const char* c_str() const { return pathname_.c_str(); }
+
+  // Returns the current working directory, or "" if unsuccessful.
+  static FilePath GetCurrentDir();
+
+  // Given directory = "dir", base_name = "test", number = 0,
+  // extension = "xml", returns "dir/test.xml". If number is greater
+  // than zero (e.g., 12), returns "dir/test_12.xml".
+  // On Windows platform, uses \ as the separator rather than /.
+  static FilePath MakeFileName(const FilePath& directory,
+                               const FilePath& base_name,
+                               int number,
+                               const char* extension);
+
+  // Given directory = "dir", relative_path = "test.xml",
+  // returns "dir/test.xml".
+  // On Windows, uses \ as the separator rather than /.
+  static FilePath ConcatPaths(const FilePath& directory,
+                              const FilePath& relative_path);
+
+  // Returns a pathname for a file that does not currently exist. The pathname
+  // will be directory/base_name.extension or
+  // directory/base_name_<number>.extension if directory/base_name.extension
+  // already exists. The number will be incremented until a pathname is found
+  // that does not already exist.
+  // Examples: 'dir/foo_test.xml' or 'dir/foo_test_1.xml'.
+  // There could be a race condition if two or more processes are calling this
+  // function at the same time -- they could both pick the same filename.
+  static FilePath GenerateUniqueFileName(const FilePath& directory,
+                                         const FilePath& base_name,
+                                         const char* extension);
+
+  // Returns true if and only if the path is "".
+  bool IsEmpty() const { return pathname_.empty(); }
+
+  // If input name has a trailing separator character, removes it and returns
+  // the name, otherwise return the name string unmodified.
+  // On Windows platform, uses \ as the separator, other platforms use /.
+  FilePath RemoveTrailingPathSeparator() const;
+
+  // Returns a copy of the FilePath with the directory part removed.
+  // Example: FilePath("path/to/file").RemoveDirectoryName() returns
+  // FilePath("file"). If there is no directory part ("just_a_file"), it returns
+  // the FilePath unmodified. If there is no file part ("just_a_dir/") it
+  // returns an empty FilePath ("").
+  // On Windows platform, '\' is the path separator, otherwise it is '/'.
+  FilePath RemoveDirectoryName() const;
+
+  // RemoveFileName returns the directory path with the filename removed.
+  // Example: FilePath("path/to/file").RemoveFileName() returns "path/to/".
+  // If the FilePath is "a_file" or "/a_file", RemoveFileName returns
+  // FilePath("./") or, on Windows, FilePath(".\\"). If the filepath does
+  // not have a file, like "just/a/dir/", it returns the FilePath unmodified.
+  // On Windows platform, '\' is the path separator, otherwise it is '/'.
+  FilePath RemoveFileName() const;
+
+  // Returns a copy of the FilePath with the case-insensitive extension removed.
+  // Example: FilePath("dir/file.exe").RemoveExtension("EXE") returns
+  // FilePath("dir/file"). If a case-insensitive extension is not
+  // found, returns a copy of the original FilePath.
+  FilePath RemoveExtension(const char* extension) const;
+
+  // Creates directories so that path exists. Returns true if successful or if
+  // the directories already exist; returns false if unable to create
+  // directories for any reason. Will also return false if the FilePath does
+  // not represent a directory (that is, it doesn't end with a path separator).
+  bool CreateDirectoriesRecursively() const;
+
+  // Create the directory so that path exists. Returns true if successful or
+  // if the directory already exists; returns false if unable to create the
+  // directory for any reason, including if the parent directory does not
+  // exist. Not named "CreateDirectory" because that's a macro on Windows.
+  bool CreateFolder() const;
+
+  // Returns true if FilePath describes something in the file-system,
+  // either a file, directory, or whatever, and that something exists.
+  bool FileOrDirectoryExists() const;
+
+  // Returns true if pathname describes a directory in the file-system
+  // that exists.
+  bool DirectoryExists() const;
+
+  // Returns true if FilePath ends with a path separator, which indicates that
+  // it is intended to represent a directory. Returns false otherwise.
+  // This does NOT check that a directory (or file) actually exists.
+  bool IsDirectory() const;
+
+  // Returns true if pathname describes a root directory. (Windows has one
+  // root directory per disk drive.)
+  bool IsRootDirectory() const;
+
+  // Returns true if pathname describes an absolute path.
+  bool IsAbsolutePath() const;
+
+ private:
+  // Replaces multiple consecutive separators with a single separator.
+  // For example, "bar///foo" becomes "bar/foo". Does not eliminate other
+  // redundancies that might be in a pathname involving "." or "..".
+  //
+  // A pathname with multiple consecutive separators may occur either through
+  // user error or as a result of some scripts or APIs that generate a pathname
+  // with a trailing separator. On other platforms the same API or script
+  // may NOT generate a pathname with a trailing "/". Then elsewhere that
+  // pathname may have another "/" and pathname components added to it,
+  // without checking for the separator already being there.
+  // The script language and operating system may allow paths like "foo//bar"
+  // but some of the functions in FilePath will not handle that correctly. In
+  // particular, RemoveTrailingPathSeparator() only removes one separator, and
+  // it is called in CreateDirectoriesRecursively() assuming that it will change
+  // a pathname from directory syntax (trailing separator) to filename syntax.
+  //
+  // On Windows this method also replaces the alternate path separator '/' with
+  // the primary path separator '\\', so that for example "bar\\/\\foo" becomes
+  // "bar\\foo".
+
+  void Normalize();
+
+  // Returns a pointer to the last occurence of a valid path separator in
+  // the FilePath. On Windows, for example, both '/' and '\' are valid path
+  // separators. Returns NULL if no path separator was found.
+  const char* FindLastPathSeparator() const;
+
+  std::string pathname_;
+};  // class FilePath
+
+}  // namespace internal
+}  // namespace testing
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-internal.h b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-internal.h
new file mode 100644
index 0000000000000000000000000000000000000000..94c816a28bdb170aec9568e02be4a448a9b4dc7f
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-internal.h
@@ -0,0 +1,1380 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This header file declares functions and macros used internally by
+// Google Test.  They are subject to change without notice.
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
+
+#include "gtest/internal/gtest-port.h"
+
+#if GTEST_OS_LINUX
+# include <stdlib.h>
+# include <sys/types.h>
+# include <sys/wait.h>
+# include <unistd.h>
+#endif  // GTEST_OS_LINUX
+
+#if GTEST_HAS_EXCEPTIONS
+# include <stdexcept>
+#endif
+
+#include <ctype.h>
+#include <float.h>
+#include <string.h>
+#include <iomanip>
+#include <limits>
+#include <map>
+#include <set>
+#include <string>
+#include <type_traits>
+#include <vector>
+
+#include "gtest/gtest-message.h"
+#include "gtest/internal/gtest-filepath.h"
+#include "gtest/internal/gtest-string.h"
+#include "gtest/internal/gtest-type-util.h"
+
+// Due to C++ preprocessor weirdness, we need double indirection to
+// concatenate two tokens when one of them is __LINE__.  Writing
+//
+//   foo ## __LINE__
+//
+// will result in the token foo__LINE__, instead of foo followed by
+// the current line number.  For more details, see
+// http://www.parashift.com/c++-faq-lite/misc-technical-issues.html#faq-39.6
+#define GTEST_CONCAT_TOKEN_(foo, bar) GTEST_CONCAT_TOKEN_IMPL_(foo, bar)
+#define GTEST_CONCAT_TOKEN_IMPL_(foo, bar) foo ## bar
+
+// Stringifies its argument.
+#define GTEST_STRINGIFY_(name) #name
+
+namespace proto2 { class Message; }
+
+namespace testing {
+
+// Forward declarations.
+
+class AssertionResult;                 // Result of an assertion.
+class Message;                         // Represents a failure message.
+class Test;                            // Represents a test.
+class TestInfo;                        // Information about a test.
+class TestPartResult;                  // Result of a test part.
+class UnitTest;                        // A collection of test suites.
+
+template <typename T>
+::std::string PrintToString(const T& value);
+
+namespace internal {
+
+struct TraceInfo;                      // Information about a trace point.
+class TestInfoImpl;                    // Opaque implementation of TestInfo
+class UnitTestImpl;                    // Opaque implementation of UnitTest
+
+// The text used in failure messages to indicate the start of the
+// stack trace.
+GTEST_API_ extern const char kStackTraceMarker[];
+
+// An IgnoredValue object can be implicitly constructed from ANY value.
+class IgnoredValue {
+  struct Sink {};
+ public:
+  // This constructor template allows any value to be implicitly
+  // converted to IgnoredValue.  The object has no data member and
+  // doesn't try to remember anything about the argument.  We
+  // deliberately omit the 'explicit' keyword in order to allow the
+  // conversion to be implicit.
+  // Disable the conversion if T already has a magical conversion operator.
+  // Otherwise we get ambiguity.
+  template <typename T,
+            typename std::enable_if<!std::is_convertible<T, Sink>::value,
+                                    int>::type = 0>
+  IgnoredValue(const T& /* ignored */) {}  // NOLINT(runtime/explicit)
+};
+
+// Appends the user-supplied message to the Google-Test-generated message.
+GTEST_API_ std::string AppendUserMessage(
+    const std::string& gtest_msg, const Message& user_msg);
+
+#if GTEST_HAS_EXCEPTIONS
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4275 \
+/* an exported class was derived from a class that was not exported */)
+
+// This exception is thrown by (and only by) a failed Google Test
+// assertion when GTEST_FLAG(throw_on_failure) is true (if exceptions
+// are enabled).  We derive it from std::runtime_error, which is for
+// errors presumably detectable only at run time.  Since
+// std::runtime_error inherits from std::exception, many testing
+// frameworks know how to extract and print the message inside it.
+class GTEST_API_ GoogleTestFailureException : public ::std::runtime_error {
+ public:
+  explicit GoogleTestFailureException(const TestPartResult& failure);
+};
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4275
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
+namespace edit_distance {
+// Returns the optimal edits to go from 'left' to 'right'.
+// All edits cost the same, with replace having lower priority than
+// add/remove.
+// Simple implementation of the Wagner-Fischer algorithm.
+// See http://en.wikipedia.org/wiki/Wagner-Fischer_algorithm
+enum EditType { kMatch, kAdd, kRemove, kReplace };
+GTEST_API_ std::vector<EditType> CalculateOptimalEdits(
+    const std::vector<size_t>& left, const std::vector<size_t>& right);
+
+// Same as above, but the input is represented as strings.
+GTEST_API_ std::vector<EditType> CalculateOptimalEdits(
+    const std::vector<std::string>& left,
+    const std::vector<std::string>& right);
+
+// Create a diff of the input strings in Unified diff format.
+GTEST_API_ std::string CreateUnifiedDiff(const std::vector<std::string>& left,
+                                         const std::vector<std::string>& right,
+                                         size_t context = 2);
+
+}  // namespace edit_distance
+
+// Calculate the diff between 'left' and 'right' and return it in unified diff
+// format.
+// If not null, stores in 'total_line_count' the total number of lines found
+// in left + right.
+GTEST_API_ std::string DiffStrings(const std::string& left,
+                                   const std::string& right,
+                                   size_t* total_line_count);
+
+// Constructs and returns the message for an equality assertion
+// (e.g. ASSERT_EQ, EXPECT_STREQ, etc) failure.
+//
+// The first four parameters are the expressions used in the assertion
+// and their values, as strings.  For example, for ASSERT_EQ(foo, bar)
+// where foo is 5 and bar is 6, we have:
+//
+//   expected_expression: "foo"
+//   actual_expression:   "bar"
+//   expected_value:      "5"
+//   actual_value:        "6"
+//
+// The ignoring_case parameter is true if and only if the assertion is a
+// *_STRCASEEQ*.  When it's true, the string " (ignoring case)" will
+// be inserted into the message.
+GTEST_API_ AssertionResult EqFailure(const char* expected_expression,
+                                     const char* actual_expression,
+                                     const std::string& expected_value,
+                                     const std::string& actual_value,
+                                     bool ignoring_case);
+
+// Constructs a failure message for Boolean assertions such as EXPECT_TRUE.
+GTEST_API_ std::string GetBoolAssertionFailureMessage(
+    const AssertionResult& assertion_result,
+    const char* expression_text,
+    const char* actual_predicate_value,
+    const char* expected_predicate_value);
+
+// This template class represents an IEEE floating-point number
+// (either single-precision or double-precision, depending on the
+// template parameters).
+//
+// The purpose of this class is to do more sophisticated number
+// comparison.  (Due to round-off error, etc, it's very unlikely that
+// two floating-points will be equal exactly.  Hence a naive
+// comparison by the == operation often doesn't work.)
+//
+// Format of IEEE floating-point:
+//
+//   The most-significant bit being the leftmost, an IEEE
+//   floating-point looks like
+//
+//     sign_bit exponent_bits fraction_bits
+//
+//   Here, sign_bit is a single bit that designates the sign of the
+//   number.
+//
+//   For float, there are 8 exponent bits and 23 fraction bits.
+//
+//   For double, there are 11 exponent bits and 52 fraction bits.
+//
+//   More details can be found at
+//   http://en.wikipedia.org/wiki/IEEE_floating-point_standard.
+//
+// Template parameter:
+//
+//   RawType: the raw floating-point type (either float or double)
+template <typename RawType>
+class FloatingPoint {
+ public:
+  // Defines the unsigned integer type that has the same size as the
+  // floating point number.
+  typedef typename TypeWithSize<sizeof(RawType)>::UInt Bits;
+
+  // Constants.
+
+  // # of bits in a number.
+  static const size_t kBitCount = 8*sizeof(RawType);
+
+  // # of fraction bits in a number.
+  static const size_t kFractionBitCount =
+    std::numeric_limits<RawType>::digits - 1;
+
+  // # of exponent bits in a number.
+  static const size_t kExponentBitCount = kBitCount - 1 - kFractionBitCount;
+
+  // The mask for the sign bit.
+  static const Bits kSignBitMask = static_cast<Bits>(1) << (kBitCount - 1);
+
+  // The mask for the fraction bits.
+  static const Bits kFractionBitMask =
+    ~static_cast<Bits>(0) >> (kExponentBitCount + 1);
+
+  // The mask for the exponent bits.
+  static const Bits kExponentBitMask = ~(kSignBitMask | kFractionBitMask);
+
+  // How many ULP's (Units in the Last Place) we want to tolerate when
+  // comparing two numbers.  The larger the value, the more error we
+  // allow.  A 0 value means that two numbers must be exactly the same
+  // to be considered equal.
+  //
+  // The maximum error of a single floating-point operation is 0.5
+  // units in the last place.  On Intel CPU's, all floating-point
+  // calculations are done with 80-bit precision, while double has 64
+  // bits.  Therefore, 4 should be enough for ordinary use.
+  //
+  // See the following article for more details on ULP:
+  // http://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/
+  static const size_t kMaxUlps = 4;
+
+  // Constructs a FloatingPoint from a raw floating-point number.
+  //
+  // On an Intel CPU, passing a non-normalized NAN (Not a Number)
+  // around may change its bits, although the new value is guaranteed
+  // to be also a NAN.  Therefore, don't expect this constructor to
+  // preserve the bits in x when x is a NAN.
+  explicit FloatingPoint(const RawType& x) { u_.value_ = x; }
+
+  // Static methods
+
+  // Reinterprets a bit pattern as a floating-point number.
+  //
+  // This function is needed to test the AlmostEquals() method.
+  static RawType ReinterpretBits(const Bits bits) {
+    FloatingPoint fp(0);
+    fp.u_.bits_ = bits;
+    return fp.u_.value_;
+  }
+
+  // Returns the floating-point number that represent positive infinity.
+  static RawType Infinity() {
+    return ReinterpretBits(kExponentBitMask);
+  }
+
+  // Returns the maximum representable finite floating-point number.
+  static RawType Max();
+
+  // Non-static methods
+
+  // Returns the bits that represents this number.
+  const Bits &bits() const { return u_.bits_; }
+
+  // Returns the exponent bits of this number.
+  Bits exponent_bits() const { return kExponentBitMask & u_.bits_; }
+
+  // Returns the fraction bits of this number.
+  Bits fraction_bits() const { return kFractionBitMask & u_.bits_; }
+
+  // Returns the sign bit of this number.
+  Bits sign_bit() const { return kSignBitMask & u_.bits_; }
+
+  // Returns true if and only if this is NAN (not a number).
+  bool is_nan() const {
+    // It's a NAN if the exponent bits are all ones and the fraction
+    // bits are not entirely zeros.
+    return (exponent_bits() == kExponentBitMask) && (fraction_bits() != 0);
+  }
+
+  // Returns true if and only if this number is at most kMaxUlps ULP's away
+  // from rhs.  In particular, this function:
+  //
+  //   - returns false if either number is (or both are) NAN.
+  //   - treats really large numbers as almost equal to infinity.
+  //   - thinks +0.0 and -0.0 are 0 DLP's apart.
+  bool AlmostEquals(const FloatingPoint& rhs) const {
+    // The IEEE standard says that any comparison operation involving
+    // a NAN must return false.
+    if (is_nan() || rhs.is_nan()) return false;
+
+    return DistanceBetweenSignAndMagnitudeNumbers(u_.bits_, rhs.u_.bits_)
+        <= kMaxUlps;
+  }
+
+ private:
+  // The data type used to store the actual floating-point number.
+  union FloatingPointUnion {
+    RawType value_;  // The raw floating-point number.
+    Bits bits_;      // The bits that represent the number.
+  };
+
+  // Converts an integer from the sign-and-magnitude representation to
+  // the biased representation.  More precisely, let N be 2 to the
+  // power of (kBitCount - 1), an integer x is represented by the
+  // unsigned number x + N.
+  //
+  // For instance,
+  //
+  //   -N + 1 (the most negative number representable using
+  //          sign-and-magnitude) is represented by 1;
+  //   0      is represented by N; and
+  //   N - 1  (the biggest number representable using
+  //          sign-and-magnitude) is represented by 2N - 1.
+  //
+  // Read http://en.wikipedia.org/wiki/Signed_number_representations
+  // for more details on signed number representations.
+  static Bits SignAndMagnitudeToBiased(const Bits &sam) {
+    if (kSignBitMask & sam) {
+      // sam represents a negative number.
+      return ~sam + 1;
+    } else {
+      // sam represents a positive number.
+      return kSignBitMask | sam;
+    }
+  }
+
+  // Given two numbers in the sign-and-magnitude representation,
+  // returns the distance between them as an unsigned number.
+  static Bits DistanceBetweenSignAndMagnitudeNumbers(const Bits &sam1,
+                                                     const Bits &sam2) {
+    const Bits biased1 = SignAndMagnitudeToBiased(sam1);
+    const Bits biased2 = SignAndMagnitudeToBiased(sam2);
+    return (biased1 >= biased2) ? (biased1 - biased2) : (biased2 - biased1);
+  }
+
+  FloatingPointUnion u_;
+};
+
+// We cannot use std::numeric_limits<T>::max() as it clashes with the max()
+// macro defined by <windows.h>.
+template <>
+inline float FloatingPoint<float>::Max() { return FLT_MAX; }
+template <>
+inline double FloatingPoint<double>::Max() { return DBL_MAX; }
+
+// Typedefs the instances of the FloatingPoint template class that we
+// care to use.
+typedef FloatingPoint<float> Float;
+typedef FloatingPoint<double> Double;
+
+// In order to catch the mistake of putting tests that use different
+// test fixture classes in the same test suite, we need to assign
+// unique IDs to fixture classes and compare them.  The TypeId type is
+// used to hold such IDs.  The user should treat TypeId as an opaque
+// type: the only operation allowed on TypeId values is to compare
+// them for equality using the == operator.
+typedef const void* TypeId;
+
+template <typename T>
+class TypeIdHelper {
+ public:
+  // dummy_ must not have a const type.  Otherwise an overly eager
+  // compiler (e.g. MSVC 7.1 & 8.0) may try to merge
+  // TypeIdHelper<T>::dummy_ for different Ts as an "optimization".
+  static bool dummy_;
+};
+
+template <typename T>
+bool TypeIdHelper<T>::dummy_ = false;
+
+// GetTypeId<T>() returns the ID of type T.  Different values will be
+// returned for different types.  Calling the function twice with the
+// same type argument is guaranteed to return the same ID.
+template <typename T>
+TypeId GetTypeId() {
+  // The compiler is required to allocate a different
+  // TypeIdHelper<T>::dummy_ variable for each T used to instantiate
+  // the template.  Therefore, the address of dummy_ is guaranteed to
+  // be unique.
+  return &(TypeIdHelper<T>::dummy_);
+}
+
+// Returns the type ID of ::testing::Test.  Always call this instead
+// of GetTypeId< ::testing::Test>() to get the type ID of
+// ::testing::Test, as the latter may give the wrong result due to a
+// suspected linker bug when compiling Google Test as a Mac OS X
+// framework.
+GTEST_API_ TypeId GetTestTypeId();
+
+// Defines the abstract factory interface that creates instances
+// of a Test object.
+class TestFactoryBase {
+ public:
+  virtual ~TestFactoryBase() {}
+
+  // Creates a test instance to run. The instance is both created and destroyed
+  // within TestInfoImpl::Run()
+  virtual Test* CreateTest() = 0;
+
+ protected:
+  TestFactoryBase() {}
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestFactoryBase);
+};
+
+// This class provides implementation of TeastFactoryBase interface.
+// It is used in TEST and TEST_F macros.
+template <class TestClass>
+class TestFactoryImpl : public TestFactoryBase {
+ public:
+  Test* CreateTest() override { return new TestClass; }
+};
+
+#if GTEST_OS_WINDOWS
+
+// Predicate-formatters for implementing the HRESULT checking macros
+// {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED}
+// We pass a long instead of HRESULT to avoid causing an
+// include dependency for the HRESULT type.
+GTEST_API_ AssertionResult IsHRESULTSuccess(const char* expr,
+                                            long hr);  // NOLINT
+GTEST_API_ AssertionResult IsHRESULTFailure(const char* expr,
+                                            long hr);  // NOLINT
+
+#endif  // GTEST_OS_WINDOWS
+
+// Types of SetUpTestSuite() and TearDownTestSuite() functions.
+using SetUpTestSuiteFunc = void (*)();
+using TearDownTestSuiteFunc = void (*)();
+
+struct CodeLocation {
+  CodeLocation(const std::string& a_file, int a_line)
+      : file(a_file), line(a_line) {}
+
+  std::string file;
+  int line;
+};
+
+//  Helper to identify which setup function for TestCase / TestSuite to call.
+//  Only one function is allowed, either TestCase or TestSute but not both.
+
+// Utility functions to help SuiteApiResolver
+using SetUpTearDownSuiteFuncType = void (*)();
+
+inline SetUpTearDownSuiteFuncType GetNotDefaultOrNull(
+    SetUpTearDownSuiteFuncType a, SetUpTearDownSuiteFuncType def) {
+  return a == def ? nullptr : a;
+}
+
+template <typename T>
+//  Note that SuiteApiResolver inherits from T because
+//  SetUpTestSuite()/TearDownTestSuite() could be protected. Ths way
+//  SuiteApiResolver can access them.
+struct SuiteApiResolver : T {
+  // testing::Test is only forward declared at this point. So we make it a
+  // dependend class for the compiler to be OK with it.
+  using Test =
+      typename std::conditional<sizeof(T) != 0, ::testing::Test, void>::type;
+
+  static SetUpTearDownSuiteFuncType GetSetUpCaseOrSuite(const char* filename,
+                                                        int line_num) {
+    SetUpTearDownSuiteFuncType test_case_fp =
+        GetNotDefaultOrNull(&T::SetUpTestCase, &Test::SetUpTestCase);
+    SetUpTearDownSuiteFuncType test_suite_fp =
+        GetNotDefaultOrNull(&T::SetUpTestSuite, &Test::SetUpTestSuite);
+
+    GTEST_CHECK_(!test_case_fp || !test_suite_fp)
+        << "Test can not provide both SetUpTestSuite and SetUpTestCase, please "
+           "make sure there is only one present at "
+        << filename << ":" << line_num;
+
+    return test_case_fp != nullptr ? test_case_fp : test_suite_fp;
+  }
+
+  static SetUpTearDownSuiteFuncType GetTearDownCaseOrSuite(const char* filename,
+                                                           int line_num) {
+    SetUpTearDownSuiteFuncType test_case_fp =
+        GetNotDefaultOrNull(&T::TearDownTestCase, &Test::TearDownTestCase);
+    SetUpTearDownSuiteFuncType test_suite_fp =
+        GetNotDefaultOrNull(&T::TearDownTestSuite, &Test::TearDownTestSuite);
+
+    GTEST_CHECK_(!test_case_fp || !test_suite_fp)
+        << "Test can not provide both TearDownTestSuite and TearDownTestCase,"
+           " please make sure there is only one present at"
+        << filename << ":" << line_num;
+
+    return test_case_fp != nullptr ? test_case_fp : test_suite_fp;
+  }
+};
+
+// Creates a new TestInfo object and registers it with Google Test;
+// returns the created object.
+//
+// Arguments:
+//
+//   test_suite_name:   name of the test suite
+//   name:             name of the test
+//   type_param        the name of the test's type parameter, or NULL if
+//                     this is not a typed or a type-parameterized test.
+//   value_param       text representation of the test's value parameter,
+//                     or NULL if this is not a type-parameterized test.
+//   code_location:    code location where the test is defined
+//   fixture_class_id: ID of the test fixture class
+//   set_up_tc:        pointer to the function that sets up the test suite
+//   tear_down_tc:     pointer to the function that tears down the test suite
+//   factory:          pointer to the factory that creates a test object.
+//                     The newly created TestInfo instance will assume
+//                     ownership of the factory object.
+GTEST_API_ TestInfo* MakeAndRegisterTestInfo(
+    const char* test_suite_name, const char* name, const char* type_param,
+    const char* value_param, CodeLocation code_location,
+    TypeId fixture_class_id, SetUpTestSuiteFunc set_up_tc,
+    TearDownTestSuiteFunc tear_down_tc, TestFactoryBase* factory);
+
+// If *pstr starts with the given prefix, modifies *pstr to be right
+// past the prefix and returns true; otherwise leaves *pstr unchanged
+// and returns false.  None of pstr, *pstr, and prefix can be NULL.
+GTEST_API_ bool SkipPrefix(const char* prefix, const char** pstr);
+
+#if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
+// State of the definition of a type-parameterized test suite.
+class GTEST_API_ TypedTestSuitePState {
+ public:
+  TypedTestSuitePState() : registered_(false) {}
+
+  // Adds the given test name to defined_test_names_ and return true
+  // if the test suite hasn't been registered; otherwise aborts the
+  // program.
+  bool AddTestName(const char* file, int line, const char* case_name,
+                   const char* test_name) {
+    if (registered_) {
+      fprintf(stderr,
+              "%s Test %s must be defined before "
+              "REGISTER_TYPED_TEST_SUITE_P(%s, ...).\n",
+              FormatFileLocation(file, line).c_str(), test_name, case_name);
+      fflush(stderr);
+      posix::Abort();
+    }
+    registered_tests_.insert(
+        ::std::make_pair(test_name, CodeLocation(file, line)));
+    return true;
+  }
+
+  bool TestExists(const std::string& test_name) const {
+    return registered_tests_.count(test_name) > 0;
+  }
+
+  const CodeLocation& GetCodeLocation(const std::string& test_name) const {
+    RegisteredTestsMap::const_iterator it = registered_tests_.find(test_name);
+    GTEST_CHECK_(it != registered_tests_.end());
+    return it->second;
+  }
+
+  // Verifies that registered_tests match the test names in
+  // defined_test_names_; returns registered_tests if successful, or
+  // aborts the program otherwise.
+  const char* VerifyRegisteredTestNames(
+      const char* file, int line, const char* registered_tests);
+
+ private:
+  typedef ::std::map<std::string, CodeLocation> RegisteredTestsMap;
+
+  bool registered_;
+  RegisteredTestsMap registered_tests_;
+};
+
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+using TypedTestCasePState = TypedTestSuitePState;
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
+// Skips to the first non-space char after the first comma in 'str';
+// returns NULL if no comma is found in 'str'.
+inline const char* SkipComma(const char* str) {
+  const char* comma = strchr(str, ',');
+  if (comma == nullptr) {
+    return nullptr;
+  }
+  while (IsSpace(*(++comma))) {}
+  return comma;
+}
+
+// Returns the prefix of 'str' before the first comma in it; returns
+// the entire string if it contains no comma.
+inline std::string GetPrefixUntilComma(const char* str) {
+  const char* comma = strchr(str, ',');
+  return comma == nullptr ? str : std::string(str, comma);
+}
+
+// Splits a given string on a given delimiter, populating a given
+// vector with the fields.
+void SplitString(const ::std::string& str, char delimiter,
+                 ::std::vector< ::std::string>* dest);
+
+// The default argument to the template below for the case when the user does
+// not provide a name generator.
+struct DefaultNameGenerator {
+  template <typename T>
+  static std::string GetName(int i) {
+    return StreamableToString(i);
+  }
+};
+
+template <typename Provided = DefaultNameGenerator>
+struct NameGeneratorSelector {
+  typedef Provided type;
+};
+
+template <typename NameGenerator>
+void GenerateNamesRecursively(Types0, std::vector<std::string>*, int) {}
+
+template <typename NameGenerator, typename Types>
+void GenerateNamesRecursively(Types, std::vector<std::string>* result, int i) {
+  result->push_back(NameGenerator::template GetName<typename Types::Head>(i));
+  GenerateNamesRecursively<NameGenerator>(typename Types::Tail(), result,
+                                          i + 1);
+}
+
+template <typename NameGenerator, typename Types>
+std::vector<std::string> GenerateNames() {
+  std::vector<std::string> result;
+  GenerateNamesRecursively<NameGenerator>(Types(), &result, 0);
+  return result;
+}
+
+// TypeParameterizedTest<Fixture, TestSel, Types>::Register()
+// registers a list of type-parameterized tests with Google Test.  The
+// return value is insignificant - we just need to return something
+// such that we can call this function in a namespace scope.
+//
+// Implementation note: The GTEST_TEMPLATE_ macro declares a template
+// template parameter.  It's defined in gtest-type-util.h.
+template <GTEST_TEMPLATE_ Fixture, class TestSel, typename Types>
+class TypeParameterizedTest {
+ public:
+  // 'index' is the index of the test in the type list 'Types'
+  // specified in INSTANTIATE_TYPED_TEST_SUITE_P(Prefix, TestSuite,
+  // Types).  Valid values for 'index' are [0, N - 1] where N is the
+  // length of Types.
+  static bool Register(const char* prefix, const CodeLocation& code_location,
+                       const char* case_name, const char* test_names, int index,
+                       const std::vector<std::string>& type_names =
+                           GenerateNames<DefaultNameGenerator, Types>()) {
+    typedef typename Types::Head Type;
+    typedef Fixture<Type> FixtureClass;
+    typedef typename GTEST_BIND_(TestSel, Type) TestClass;
+
+    // First, registers the first type-parameterized test in the type
+    // list.
+    MakeAndRegisterTestInfo(
+        (std::string(prefix) + (prefix[0] == '\0' ? "" : "/") + case_name +
+         "/" + type_names[static_cast<size_t>(index)])
+            .c_str(),
+        StripTrailingSpaces(GetPrefixUntilComma(test_names)).c_str(),
+        GetTypeName<Type>().c_str(),
+        nullptr,  // No value parameter.
+        code_location, GetTypeId<FixtureClass>(),
+        SuiteApiResolver<TestClass>::GetSetUpCaseOrSuite(
+            code_location.file.c_str(), code_location.line),
+        SuiteApiResolver<TestClass>::GetTearDownCaseOrSuite(
+            code_location.file.c_str(), code_location.line),
+        new TestFactoryImpl<TestClass>);
+
+    // Next, recurses (at compile time) with the tail of the type list.
+    return TypeParameterizedTest<Fixture, TestSel,
+                                 typename Types::Tail>::Register(prefix,
+                                                                 code_location,
+                                                                 case_name,
+                                                                 test_names,
+                                                                 index + 1,
+                                                                 type_names);
+  }
+};
+
+// The base case for the compile time recursion.
+template <GTEST_TEMPLATE_ Fixture, class TestSel>
+class TypeParameterizedTest<Fixture, TestSel, Types0> {
+ public:
+  static bool Register(const char* /*prefix*/, const CodeLocation&,
+                       const char* /*case_name*/, const char* /*test_names*/,
+                       int /*index*/,
+                       const std::vector<std::string>& =
+                           std::vector<std::string>() /*type_names*/) {
+    return true;
+  }
+};
+
+// TypeParameterizedTestSuite<Fixture, Tests, Types>::Register()
+// registers *all combinations* of 'Tests' and 'Types' with Google
+// Test.  The return value is insignificant - we just need to return
+// something such that we can call this function in a namespace scope.
+template <GTEST_TEMPLATE_ Fixture, typename Tests, typename Types>
+class TypeParameterizedTestSuite {
+ public:
+  static bool Register(const char* prefix, CodeLocation code_location,
+                       const TypedTestSuitePState* state, const char* case_name,
+                       const char* test_names,
+                       const std::vector<std::string>& type_names =
+                           GenerateNames<DefaultNameGenerator, Types>()) {
+    std::string test_name = StripTrailingSpaces(
+        GetPrefixUntilComma(test_names));
+    if (!state->TestExists(test_name)) {
+      fprintf(stderr, "Failed to get code location for test %s.%s at %s.",
+              case_name, test_name.c_str(),
+              FormatFileLocation(code_location.file.c_str(),
+                                 code_location.line).c_str());
+      fflush(stderr);
+      posix::Abort();
+    }
+    const CodeLocation& test_location = state->GetCodeLocation(test_name);
+
+    typedef typename Tests::Head Head;
+
+    // First, register the first test in 'Test' for each type in 'Types'.
+    TypeParameterizedTest<Fixture, Head, Types>::Register(
+        prefix, test_location, case_name, test_names, 0, type_names);
+
+    // Next, recurses (at compile time) with the tail of the test list.
+    return TypeParameterizedTestSuite<Fixture, typename Tests::Tail,
+                                      Types>::Register(prefix, code_location,
+                                                       state, case_name,
+                                                       SkipComma(test_names),
+                                                       type_names);
+  }
+};
+
+// The base case for the compile time recursion.
+template <GTEST_TEMPLATE_ Fixture, typename Types>
+class TypeParameterizedTestSuite<Fixture, Templates0, Types> {
+ public:
+  static bool Register(const char* /*prefix*/, const CodeLocation&,
+                       const TypedTestSuitePState* /*state*/,
+                       const char* /*case_name*/, const char* /*test_names*/,
+                       const std::vector<std::string>& =
+                           std::vector<std::string>() /*type_names*/) {
+    return true;
+  }
+};
+
+#endif  // GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
+
+// Returns the current OS stack trace as an std::string.
+//
+// The maximum number of stack frames to be included is specified by
+// the gtest_stack_trace_depth flag.  The skip_count parameter
+// specifies the number of top frames to be skipped, which doesn't
+// count against the number of frames to be included.
+//
+// For example, if Foo() calls Bar(), which in turn calls
+// GetCurrentOsStackTraceExceptTop(..., 1), Foo() will be included in
+// the trace but Bar() and GetCurrentOsStackTraceExceptTop() won't.
+GTEST_API_ std::string GetCurrentOsStackTraceExceptTop(
+    UnitTest* unit_test, int skip_count);
+
+// Helpers for suppressing warnings on unreachable code or constant
+// condition.
+
+// Always returns true.
+GTEST_API_ bool AlwaysTrue();
+
+// Always returns false.
+inline bool AlwaysFalse() { return !AlwaysTrue(); }
+
+// Helper for suppressing false warning from Clang on a const char*
+// variable declared in a conditional expression always being NULL in
+// the else branch.
+struct GTEST_API_ ConstCharPtr {
+  ConstCharPtr(const char* str) : value(str) {}
+  operator bool() const { return true; }
+  const char* value;
+};
+
+// A simple Linear Congruential Generator for generating random
+// numbers with a uniform distribution.  Unlike rand() and srand(), it
+// doesn't use global state (and therefore can't interfere with user
+// code).  Unlike rand_r(), it's portable.  An LCG isn't very random,
+// but it's good enough for our purposes.
+class GTEST_API_ Random {
+ public:
+  static const UInt32 kMaxRange = 1u << 31;
+
+  explicit Random(UInt32 seed) : state_(seed) {}
+
+  void Reseed(UInt32 seed) { state_ = seed; }
+
+  // Generates a random number from [0, range).  Crashes if 'range' is
+  // 0 or greater than kMaxRange.
+  UInt32 Generate(UInt32 range);
+
+ private:
+  UInt32 state_;
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(Random);
+};
+
+// Turns const U&, U&, const U, and U all into U.
+#define GTEST_REMOVE_REFERENCE_AND_CONST_(T) \
+  typename std::remove_const<typename std::remove_reference<T>::type>::type
+
+// IsAProtocolMessage<T>::value is a compile-time bool constant that's
+// true if and only if T is type proto2::Message or a subclass of it.
+template <typename T>
+struct IsAProtocolMessage
+    : public bool_constant<
+          std::is_convertible<const T*, const ::proto2::Message*>::value> {};
+
+// When the compiler sees expression IsContainerTest<C>(0), if C is an
+// STL-style container class, the first overload of IsContainerTest
+// will be viable (since both C::iterator* and C::const_iterator* are
+// valid types and NULL can be implicitly converted to them).  It will
+// be picked over the second overload as 'int' is a perfect match for
+// the type of argument 0.  If C::iterator or C::const_iterator is not
+// a valid type, the first overload is not viable, and the second
+// overload will be picked.  Therefore, we can determine whether C is
+// a container class by checking the type of IsContainerTest<C>(0).
+// The value of the expression is insignificant.
+//
+// In C++11 mode we check the existence of a const_iterator and that an
+// iterator is properly implemented for the container.
+//
+// For pre-C++11 that we look for both C::iterator and C::const_iterator.
+// The reason is that C++ injects the name of a class as a member of the
+// class itself (e.g. you can refer to class iterator as either
+// 'iterator' or 'iterator::iterator').  If we look for C::iterator
+// only, for example, we would mistakenly think that a class named
+// iterator is an STL container.
+//
+// Also note that the simpler approach of overloading
+// IsContainerTest(typename C::const_iterator*) and
+// IsContainerTest(...) doesn't work with Visual Age C++ and Sun C++.
+typedef int IsContainer;
+template <class C,
+          class Iterator = decltype(::std::declval<const C&>().begin()),
+          class = decltype(::std::declval<const C&>().end()),
+          class = decltype(++::std::declval<Iterator&>()),
+          class = decltype(*::std::declval<Iterator>()),
+          class = typename C::const_iterator>
+IsContainer IsContainerTest(int /* dummy */) {
+  return 0;
+}
+
+typedef char IsNotContainer;
+template <class C>
+IsNotContainer IsContainerTest(long /* dummy */) { return '\0'; }
+
+// Trait to detect whether a type T is a hash table.
+// The heuristic used is that the type contains an inner type `hasher` and does
+// not contain an inner type `reverse_iterator`.
+// If the container is iterable in reverse, then order might actually matter.
+template <typename T>
+struct IsHashTable {
+ private:
+  template <typename U>
+  static char test(typename U::hasher*, typename U::reverse_iterator*);
+  template <typename U>
+  static int test(typename U::hasher*, ...);
+  template <typename U>
+  static char test(...);
+
+ public:
+  static const bool value = sizeof(test<T>(nullptr, nullptr)) == sizeof(int);
+};
+
+template <typename T>
+const bool IsHashTable<T>::value;
+
+template <typename C,
+          bool = sizeof(IsContainerTest<C>(0)) == sizeof(IsContainer)>
+struct IsRecursiveContainerImpl;
+
+template <typename C>
+struct IsRecursiveContainerImpl<C, false> : public std::false_type {};
+
+// Since the IsRecursiveContainerImpl depends on the IsContainerTest we need to
+// obey the same inconsistencies as the IsContainerTest, namely check if
+// something is a container is relying on only const_iterator in C++11 and
+// is relying on both const_iterator and iterator otherwise
+template <typename C>
+struct IsRecursiveContainerImpl<C, true> {
+  using value_type = decltype(*std::declval<typename C::const_iterator>());
+  using type =
+      std::is_same<typename std::remove_const<
+                       typename std::remove_reference<value_type>::type>::type,
+                   C>;
+};
+
+// IsRecursiveContainer<Type> is a unary compile-time predicate that
+// evaluates whether C is a recursive container type. A recursive container
+// type is a container type whose value_type is equal to the container type
+// itself. An example for a recursive container type is
+// boost::filesystem::path, whose iterator has a value_type that is equal to
+// boost::filesystem::path.
+template <typename C>
+struct IsRecursiveContainer : public IsRecursiveContainerImpl<C>::type {};
+
+// Utilities for native arrays.
+
+// ArrayEq() compares two k-dimensional native arrays using the
+// elements' operator==, where k can be any integer >= 0.  When k is
+// 0, ArrayEq() degenerates into comparing a single pair of values.
+
+template <typename T, typename U>
+bool ArrayEq(const T* lhs, size_t size, const U* rhs);
+
+// This generic version is used when k is 0.
+template <typename T, typename U>
+inline bool ArrayEq(const T& lhs, const U& rhs) { return lhs == rhs; }
+
+// This overload is used when k >= 1.
+template <typename T, typename U, size_t N>
+inline bool ArrayEq(const T(&lhs)[N], const U(&rhs)[N]) {
+  return internal::ArrayEq(lhs, N, rhs);
+}
+
+// This helper reduces code bloat.  If we instead put its logic inside
+// the previous ArrayEq() function, arrays with different sizes would
+// lead to different copies of the template code.
+template <typename T, typename U>
+bool ArrayEq(const T* lhs, size_t size, const U* rhs) {
+  for (size_t i = 0; i != size; i++) {
+    if (!internal::ArrayEq(lhs[i], rhs[i]))
+      return false;
+  }
+  return true;
+}
+
+// Finds the first element in the iterator range [begin, end) that
+// equals elem.  Element may be a native array type itself.
+template <typename Iter, typename Element>
+Iter ArrayAwareFind(Iter begin, Iter end, const Element& elem) {
+  for (Iter it = begin; it != end; ++it) {
+    if (internal::ArrayEq(*it, elem))
+      return it;
+  }
+  return end;
+}
+
+// CopyArray() copies a k-dimensional native array using the elements'
+// operator=, where k can be any integer >= 0.  When k is 0,
+// CopyArray() degenerates into copying a single value.
+
+template <typename T, typename U>
+void CopyArray(const T* from, size_t size, U* to);
+
+// This generic version is used when k is 0.
+template <typename T, typename U>
+inline void CopyArray(const T& from, U* to) { *to = from; }
+
+// This overload is used when k >= 1.
+template <typename T, typename U, size_t N>
+inline void CopyArray(const T(&from)[N], U(*to)[N]) {
+  internal::CopyArray(from, N, *to);
+}
+
+// This helper reduces code bloat.  If we instead put its logic inside
+// the previous CopyArray() function, arrays with different sizes
+// would lead to different copies of the template code.
+template <typename T, typename U>
+void CopyArray(const T* from, size_t size, U* to) {
+  for (size_t i = 0; i != size; i++) {
+    internal::CopyArray(from[i], to + i);
+  }
+}
+
+// The relation between an NativeArray object (see below) and the
+// native array it represents.
+// We use 2 different structs to allow non-copyable types to be used, as long
+// as RelationToSourceReference() is passed.
+struct RelationToSourceReference {};
+struct RelationToSourceCopy {};
+
+// Adapts a native array to a read-only STL-style container.  Instead
+// of the complete STL container concept, this adaptor only implements
+// members useful for Google Mock's container matchers.  New members
+// should be added as needed.  To simplify the implementation, we only
+// support Element being a raw type (i.e. having no top-level const or
+// reference modifier).  It's the client's responsibility to satisfy
+// this requirement.  Element can be an array type itself (hence
+// multi-dimensional arrays are supported).
+template <typename Element>
+class NativeArray {
+ public:
+  // STL-style container typedefs.
+  typedef Element value_type;
+  typedef Element* iterator;
+  typedef const Element* const_iterator;
+
+  // Constructs from a native array. References the source.
+  NativeArray(const Element* array, size_t count, RelationToSourceReference) {
+    InitRef(array, count);
+  }
+
+  // Constructs from a native array. Copies the source.
+  NativeArray(const Element* array, size_t count, RelationToSourceCopy) {
+    InitCopy(array, count);
+  }
+
+  // Copy constructor.
+  NativeArray(const NativeArray& rhs) {
+    (this->*rhs.clone_)(rhs.array_, rhs.size_);
+  }
+
+  ~NativeArray() {
+    if (clone_ != &NativeArray::InitRef)
+      delete[] array_;
+  }
+
+  // STL-style container methods.
+  size_t size() const { return size_; }
+  const_iterator begin() const { return array_; }
+  const_iterator end() const { return array_ + size_; }
+  bool operator==(const NativeArray& rhs) const {
+    return size() == rhs.size() &&
+        ArrayEq(begin(), size(), rhs.begin());
+  }
+
+ private:
+  static_assert(!std::is_const<Element>::value, "Type must not be const");
+  static_assert(!std::is_reference<Element>::value,
+                "Type must not be a reference");
+
+  // Initializes this object with a copy of the input.
+  void InitCopy(const Element* array, size_t a_size) {
+    Element* const copy = new Element[a_size];
+    CopyArray(array, a_size, copy);
+    array_ = copy;
+    size_ = a_size;
+    clone_ = &NativeArray::InitCopy;
+  }
+
+  // Initializes this object with a reference of the input.
+  void InitRef(const Element* array, size_t a_size) {
+    array_ = array;
+    size_ = a_size;
+    clone_ = &NativeArray::InitRef;
+  }
+
+  const Element* array_;
+  size_t size_;
+  void (NativeArray::*clone_)(const Element*, size_t);
+
+  GTEST_DISALLOW_ASSIGN_(NativeArray);
+};
+
+// Backport of std::index_sequence.
+template <size_t... Is>
+struct IndexSequence {
+  using type = IndexSequence;
+};
+
+// Double the IndexSequence, and one if plus_one is true.
+template <bool plus_one, typename T, size_t sizeofT>
+struct DoubleSequence;
+template <size_t... I, size_t sizeofT>
+struct DoubleSequence<true, IndexSequence<I...>, sizeofT> {
+  using type = IndexSequence<I..., (sizeofT + I)..., 2 * sizeofT>;
+};
+template <size_t... I, size_t sizeofT>
+struct DoubleSequence<false, IndexSequence<I...>, sizeofT> {
+  using type = IndexSequence<I..., (sizeofT + I)...>;
+};
+
+// Backport of std::make_index_sequence.
+// It uses O(ln(N)) instantiation depth.
+template <size_t N>
+struct MakeIndexSequence
+    : DoubleSequence<N % 2 == 1, typename MakeIndexSequence<N / 2>::type,
+                     N / 2>::type {};
+
+template <>
+struct MakeIndexSequence<0> : IndexSequence<> {};
+
+// FIXME: This implementation of ElemFromList is O(1) in instantiation depth,
+// but it is O(N^2) in total instantiations. Not sure if this is the best
+// tradeoff, as it will make it somewhat slow to compile.
+template <typename T, size_t, size_t>
+struct ElemFromListImpl {};
+
+template <typename T, size_t I>
+struct ElemFromListImpl<T, I, I> {
+  using type = T;
+};
+
+// Get the Nth element from T...
+// It uses O(1) instantiation depth.
+template <size_t N, typename I, typename... T>
+struct ElemFromList;
+
+template <size_t N, size_t... I, typename... T>
+struct ElemFromList<N, IndexSequence<I...>, T...>
+    : ElemFromListImpl<T, N, I>... {};
+
+template <typename... T>
+class FlatTuple;
+
+template <typename Derived, size_t I>
+struct FlatTupleElemBase;
+
+template <typename... T, size_t I>
+struct FlatTupleElemBase<FlatTuple<T...>, I> {
+  using value_type =
+      typename ElemFromList<I, typename MakeIndexSequence<sizeof...(T)>::type,
+                            T...>::type;
+  FlatTupleElemBase() = default;
+  explicit FlatTupleElemBase(value_type t) : value(std::move(t)) {}
+  value_type value;
+};
+
+template <typename Derived, typename Idx>
+struct FlatTupleBase;
+
+template <size_t... Idx, typename... T>
+struct FlatTupleBase<FlatTuple<T...>, IndexSequence<Idx...>>
+    : FlatTupleElemBase<FlatTuple<T...>, Idx>... {
+  using Indices = IndexSequence<Idx...>;
+  FlatTupleBase() = default;
+  explicit FlatTupleBase(T... t)
+      : FlatTupleElemBase<FlatTuple<T...>, Idx>(std::move(t))... {}
+};
+
+// Analog to std::tuple but with different tradeoffs.
+// This class minimizes the template instantiation depth, thus allowing more
+// elements that std::tuple would. std::tuple has been seen to require an
+// instantiation depth of more than 10x the number of elements in some
+// implementations.
+// FlatTuple and ElemFromList are not recursive and have a fixed depth
+// regardless of T...
+// MakeIndexSequence, on the other hand, it is recursive but with an
+// instantiation depth of O(ln(N)).
+template <typename... T>
+class FlatTuple
+    : private FlatTupleBase<FlatTuple<T...>,
+                            typename MakeIndexSequence<sizeof...(T)>::type> {
+  using Indices = typename FlatTuple::FlatTupleBase::Indices;
+
+ public:
+  FlatTuple() = default;
+  explicit FlatTuple(T... t) : FlatTuple::FlatTupleBase(std::move(t)...) {}
+
+  template <size_t I>
+  const typename ElemFromList<I, Indices, T...>::type& Get() const {
+    return static_cast<const FlatTupleElemBase<FlatTuple, I>*>(this)->value;
+  }
+
+  template <size_t I>
+  typename ElemFromList<I, Indices, T...>::type& Get() {
+    return static_cast<FlatTupleElemBase<FlatTuple, I>*>(this)->value;
+  }
+};
+
+// Utility functions to be called with static_assert to induce deprecation
+// warnings.
+GTEST_INTERNAL_DEPRECATED(
+    "INSTANTIATE_TEST_CASE_P is deprecated, please use "
+    "INSTANTIATE_TEST_SUITE_P")
+constexpr bool InstantiateTestCase_P_IsDeprecated() { return true; }
+
+GTEST_INTERNAL_DEPRECATED(
+    "TYPED_TEST_CASE_P is deprecated, please use "
+    "TYPED_TEST_SUITE_P")
+constexpr bool TypedTestCase_P_IsDeprecated() { return true; }
+
+GTEST_INTERNAL_DEPRECATED(
+    "TYPED_TEST_CASE is deprecated, please use "
+    "TYPED_TEST_SUITE")
+constexpr bool TypedTestCaseIsDeprecated() { return true; }
+
+GTEST_INTERNAL_DEPRECATED(
+    "REGISTER_TYPED_TEST_CASE_P is deprecated, please use "
+    "REGISTER_TYPED_TEST_SUITE_P")
+constexpr bool RegisterTypedTestCase_P_IsDeprecated() { return true; }
+
+GTEST_INTERNAL_DEPRECATED(
+    "INSTANTIATE_TYPED_TEST_CASE_P is deprecated, please use "
+    "INSTANTIATE_TYPED_TEST_SUITE_P")
+constexpr bool InstantiateTypedTestCase_P_IsDeprecated() { return true; }
+
+}  // namespace internal
+}  // namespace testing
+
+#define GTEST_MESSAGE_AT_(file, line, message, result_type) \
+  ::testing::internal::AssertHelper(result_type, file, line, message) \
+    = ::testing::Message()
+
+#define GTEST_MESSAGE_(message, result_type) \
+  GTEST_MESSAGE_AT_(__FILE__, __LINE__, message, result_type)
+
+#define GTEST_FATAL_FAILURE_(message) \
+  return GTEST_MESSAGE_(message, ::testing::TestPartResult::kFatalFailure)
+
+#define GTEST_NONFATAL_FAILURE_(message) \
+  GTEST_MESSAGE_(message, ::testing::TestPartResult::kNonFatalFailure)
+
+#define GTEST_SUCCESS_(message) \
+  GTEST_MESSAGE_(message, ::testing::TestPartResult::kSuccess)
+
+#define GTEST_SKIP_(message) \
+  return GTEST_MESSAGE_(message, ::testing::TestPartResult::kSkip)
+
+// Suppress MSVC warning 4072 (unreachable code) for the code following
+// statement if it returns or throws (or doesn't return or throw in some
+// situations).
+#define GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement) \
+  if (::testing::internal::AlwaysTrue()) { statement; }
+
+#define GTEST_TEST_THROW_(statement, expected_exception, fail) \
+  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
+  if (::testing::internal::ConstCharPtr gtest_msg = "") { \
+    bool gtest_caught_expected = false; \
+    try { \
+      GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
+    } \
+    catch (expected_exception const&) { \
+      gtest_caught_expected = true; \
+    } \
+    catch (...) { \
+      gtest_msg.value = \
+          "Expected: " #statement " throws an exception of type " \
+          #expected_exception ".\n  Actual: it throws a different type."; \
+      goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
+    } \
+    if (!gtest_caught_expected) { \
+      gtest_msg.value = \
+          "Expected: " #statement " throws an exception of type " \
+          #expected_exception ".\n  Actual: it throws nothing."; \
+      goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
+    } \
+  } else \
+    GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__): \
+      fail(gtest_msg.value)
+
+#define GTEST_TEST_NO_THROW_(statement, fail) \
+  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
+  if (::testing::internal::AlwaysTrue()) { \
+    try { \
+      GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
+    } \
+    catch (...) { \
+      goto GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__); \
+    } \
+  } else \
+    GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__): \
+      fail("Expected: " #statement " doesn't throw an exception.\n" \
+           "  Actual: it throws.")
+
+#define GTEST_TEST_ANY_THROW_(statement, fail) \
+  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
+  if (::testing::internal::AlwaysTrue()) { \
+    bool gtest_caught_any = false; \
+    try { \
+      GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
+    } \
+    catch (...) { \
+      gtest_caught_any = true; \
+    } \
+    if (!gtest_caught_any) { \
+      goto GTEST_CONCAT_TOKEN_(gtest_label_testanythrow_, __LINE__); \
+    } \
+  } else \
+    GTEST_CONCAT_TOKEN_(gtest_label_testanythrow_, __LINE__): \
+      fail("Expected: " #statement " throws an exception.\n" \
+           "  Actual: it doesn't.")
+
+
+// Implements Boolean test assertions such as EXPECT_TRUE. expression can be
+// either a boolean expression or an AssertionResult. text is a textual
+// represenation of expression as it was passed into the EXPECT_TRUE.
+#define GTEST_TEST_BOOLEAN_(expression, text, actual, expected, fail) \
+  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
+  if (const ::testing::AssertionResult gtest_ar_ = \
+      ::testing::AssertionResult(expression)) \
+    ; \
+  else \
+    fail(::testing::internal::GetBoolAssertionFailureMessage(\
+        gtest_ar_, text, #actual, #expected).c_str())
+
+#define GTEST_TEST_NO_FATAL_FAILURE_(statement, fail) \
+  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
+  if (::testing::internal::AlwaysTrue()) { \
+    ::testing::internal::HasNewFatalFailureHelper gtest_fatal_failure_checker; \
+    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
+    if (gtest_fatal_failure_checker.has_new_fatal_failure()) { \
+      goto GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__); \
+    } \
+  } else \
+    GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__): \
+      fail("Expected: " #statement " doesn't generate new fatal " \
+           "failures in the current thread.\n" \
+           "  Actual: it does.")
+
+// Expands to the name of the class that implements the given test.
+#define GTEST_TEST_CLASS_NAME_(test_suite_name, test_name) \
+  test_suite_name##_##test_name##_Test
+
+// Helper macro for defining tests.
+#define GTEST_TEST_(test_suite_name, test_name, parent_class, parent_id)      \
+  static_assert(sizeof(GTEST_STRINGIFY_(test_suite_name)) > 1,                \
+                "test_suite_name must not be empty");                         \
+  static_assert(sizeof(GTEST_STRINGIFY_(test_name)) > 1,                      \
+                "test_name must not be empty");                               \
+  class GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)                    \
+      : public parent_class {                                                 \
+   public:                                                                    \
+    GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)() {}                   \
+                                                                              \
+   private:                                                                   \
+    virtual void TestBody();                                                  \
+    static ::testing::TestInfo* const test_info_ GTEST_ATTRIBUTE_UNUSED_;     \
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(GTEST_TEST_CLASS_NAME_(test_suite_name,   \
+                                                           test_name));       \
+  };                                                                          \
+                                                                              \
+  ::testing::TestInfo* const GTEST_TEST_CLASS_NAME_(test_suite_name,          \
+                                                    test_name)::test_info_ =  \
+      ::testing::internal::MakeAndRegisterTestInfo(                           \
+          #test_suite_name, #test_name, nullptr, nullptr,                     \
+          ::testing::internal::CodeLocation(__FILE__, __LINE__), (parent_id), \
+          ::testing::internal::SuiteApiResolver<                              \
+              parent_class>::GetSetUpCaseOrSuite(__FILE__, __LINE__),         \
+          ::testing::internal::SuiteApiResolver<                              \
+              parent_class>::GetTearDownCaseOrSuite(__FILE__, __LINE__),      \
+          new ::testing::internal::TestFactoryImpl<GTEST_TEST_CLASS_NAME_(    \
+              test_suite_name, test_name)>);                                  \
+  void GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)::TestBody()
+
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-param-util.h b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-param-util.h
new file mode 100644
index 0000000000000000000000000000000000000000..97533993c0c3ce9beb489f1bfa25317b88f879a1
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-param-util.h
@@ -0,0 +1,883 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Type and function utilities for implementing parameterized tests.
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_H_
+
+#include <ctype.h>
+
+#include <cassert>
+#include <iterator>
+#include <memory>
+#include <set>
+#include <tuple>
+#include <utility>
+#include <vector>
+
+#include "gtest/internal/gtest-internal.h"
+#include "gtest/internal/gtest-port.h"
+#include "gtest/gtest-printers.h"
+
+namespace testing {
+// Input to a parameterized test name generator, describing a test parameter.
+// Consists of the parameter value and the integer parameter index.
+template <class ParamType>
+struct TestParamInfo {
+  TestParamInfo(const ParamType& a_param, size_t an_index) :
+    param(a_param),
+    index(an_index) {}
+  ParamType param;
+  size_t index;
+};
+
+// A builtin parameterized test name generator which returns the result of
+// testing::PrintToString.
+struct PrintToStringParamName {
+  template <class ParamType>
+  std::string operator()(const TestParamInfo<ParamType>& info) const {
+    return PrintToString(info.param);
+  }
+};
+
+namespace internal {
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+// Utility Functions
+
+// Outputs a message explaining invalid registration of different
+// fixture class for the same test suite. This may happen when
+// TEST_P macro is used to define two tests with the same name
+// but in different namespaces.
+GTEST_API_ void ReportInvalidTestSuiteType(const char* test_suite_name,
+                                           CodeLocation code_location);
+
+template <typename> class ParamGeneratorInterface;
+template <typename> class ParamGenerator;
+
+// Interface for iterating over elements provided by an implementation
+// of ParamGeneratorInterface<T>.
+template <typename T>
+class ParamIteratorInterface {
+ public:
+  virtual ~ParamIteratorInterface() {}
+  // A pointer to the base generator instance.
+  // Used only for the purposes of iterator comparison
+  // to make sure that two iterators belong to the same generator.
+  virtual const ParamGeneratorInterface<T>* BaseGenerator() const = 0;
+  // Advances iterator to point to the next element
+  // provided by the generator. The caller is responsible
+  // for not calling Advance() on an iterator equal to
+  // BaseGenerator()->End().
+  virtual void Advance() = 0;
+  // Clones the iterator object. Used for implementing copy semantics
+  // of ParamIterator<T>.
+  virtual ParamIteratorInterface* Clone() const = 0;
+  // Dereferences the current iterator and provides (read-only) access
+  // to the pointed value. It is the caller's responsibility not to call
+  // Current() on an iterator equal to BaseGenerator()->End().
+  // Used for implementing ParamGenerator<T>::operator*().
+  virtual const T* Current() const = 0;
+  // Determines whether the given iterator and other point to the same
+  // element in the sequence generated by the generator.
+  // Used for implementing ParamGenerator<T>::operator==().
+  virtual bool Equals(const ParamIteratorInterface& other) const = 0;
+};
+
+// Class iterating over elements provided by an implementation of
+// ParamGeneratorInterface<T>. It wraps ParamIteratorInterface<T>
+// and implements the const forward iterator concept.
+template <typename T>
+class ParamIterator {
+ public:
+  typedef T value_type;
+  typedef const T& reference;
+  typedef ptrdiff_t difference_type;
+
+  // ParamIterator assumes ownership of the impl_ pointer.
+  ParamIterator(const ParamIterator& other) : impl_(other.impl_->Clone()) {}
+  ParamIterator& operator=(const ParamIterator& other) {
+    if (this != &other)
+      impl_.reset(other.impl_->Clone());
+    return *this;
+  }
+
+  const T& operator*() const { return *impl_->Current(); }
+  const T* operator->() const { return impl_->Current(); }
+  // Prefix version of operator++.
+  ParamIterator& operator++() {
+    impl_->Advance();
+    return *this;
+  }
+  // Postfix version of operator++.
+  ParamIterator operator++(int /*unused*/) {
+    ParamIteratorInterface<T>* clone = impl_->Clone();
+    impl_->Advance();
+    return ParamIterator(clone);
+  }
+  bool operator==(const ParamIterator& other) const {
+    return impl_.get() == other.impl_.get() || impl_->Equals(*other.impl_);
+  }
+  bool operator!=(const ParamIterator& other) const {
+    return !(*this == other);
+  }
+
+ private:
+  friend class ParamGenerator<T>;
+  explicit ParamIterator(ParamIteratorInterface<T>* impl) : impl_(impl) {}
+  std::unique_ptr<ParamIteratorInterface<T> > impl_;
+};
+
+// ParamGeneratorInterface<T> is the binary interface to access generators
+// defined in other translation units.
+template <typename T>
+class ParamGeneratorInterface {
+ public:
+  typedef T ParamType;
+
+  virtual ~ParamGeneratorInterface() {}
+
+  // Generator interface definition
+  virtual ParamIteratorInterface<T>* Begin() const = 0;
+  virtual ParamIteratorInterface<T>* End() const = 0;
+};
+
+// Wraps ParamGeneratorInterface<T> and provides general generator syntax
+// compatible with the STL Container concept.
+// This class implements copy initialization semantics and the contained
+// ParamGeneratorInterface<T> instance is shared among all copies
+// of the original object. This is possible because that instance is immutable.
+template<typename T>
+class ParamGenerator {
+ public:
+  typedef ParamIterator<T> iterator;
+
+  explicit ParamGenerator(ParamGeneratorInterface<T>* impl) : impl_(impl) {}
+  ParamGenerator(const ParamGenerator& other) : impl_(other.impl_) {}
+
+  ParamGenerator& operator=(const ParamGenerator& other) {
+    impl_ = other.impl_;
+    return *this;
+  }
+
+  iterator begin() const { return iterator(impl_->Begin()); }
+  iterator end() const { return iterator(impl_->End()); }
+
+ private:
+  std::shared_ptr<const ParamGeneratorInterface<T> > impl_;
+};
+
+// Generates values from a range of two comparable values. Can be used to
+// generate sequences of user-defined types that implement operator+() and
+// operator<().
+// This class is used in the Range() function.
+template <typename T, typename IncrementT>
+class RangeGenerator : public ParamGeneratorInterface<T> {
+ public:
+  RangeGenerator(T begin, T end, IncrementT step)
+      : begin_(begin), end_(end),
+        step_(step), end_index_(CalculateEndIndex(begin, end, step)) {}
+  ~RangeGenerator() override {}
+
+  ParamIteratorInterface<T>* Begin() const override {
+    return new Iterator(this, begin_, 0, step_);
+  }
+  ParamIteratorInterface<T>* End() const override {
+    return new Iterator(this, end_, end_index_, step_);
+  }
+
+ private:
+  class Iterator : public ParamIteratorInterface<T> {
+   public:
+    Iterator(const ParamGeneratorInterface<T>* base, T value, int index,
+             IncrementT step)
+        : base_(base), value_(value), index_(index), step_(step) {}
+    ~Iterator() override {}
+
+    const ParamGeneratorInterface<T>* BaseGenerator() const override {
+      return base_;
+    }
+    void Advance() override {
+      value_ = static_cast<T>(value_ + step_);
+      index_++;
+    }
+    ParamIteratorInterface<T>* Clone() const override {
+      return new Iterator(*this);
+    }
+    const T* Current() const override { return &value_; }
+    bool Equals(const ParamIteratorInterface<T>& other) const override {
+      // Having the same base generator guarantees that the other
+      // iterator is of the same type and we can downcast.
+      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
+          << "The program attempted to compare iterators "
+          << "from different generators." << std::endl;
+      const int other_index =
+          CheckedDowncastToActualType<const Iterator>(&other)->index_;
+      return index_ == other_index;
+    }
+
+   private:
+    Iterator(const Iterator& other)
+        : ParamIteratorInterface<T>(),
+          base_(other.base_), value_(other.value_), index_(other.index_),
+          step_(other.step_) {}
+
+    // No implementation - assignment is unsupported.
+    void operator=(const Iterator& other);
+
+    const ParamGeneratorInterface<T>* const base_;
+    T value_;
+    int index_;
+    const IncrementT step_;
+  };  // class RangeGenerator::Iterator
+
+  static int CalculateEndIndex(const T& begin,
+                               const T& end,
+                               const IncrementT& step) {
+    int end_index = 0;
+    for (T i = begin; i < end; i = static_cast<T>(i + step))
+      end_index++;
+    return end_index;
+  }
+
+  // No implementation - assignment is unsupported.
+  void operator=(const RangeGenerator& other);
+
+  const T begin_;
+  const T end_;
+  const IncrementT step_;
+  // The index for the end() iterator. All the elements in the generated
+  // sequence are indexed (0-based) to aid iterator comparison.
+  const int end_index_;
+};  // class RangeGenerator
+
+
+// Generates values from a pair of STL-style iterators. Used in the
+// ValuesIn() function. The elements are copied from the source range
+// since the source can be located on the stack, and the generator
+// is likely to persist beyond that stack frame.
+template <typename T>
+class ValuesInIteratorRangeGenerator : public ParamGeneratorInterface<T> {
+ public:
+  template <typename ForwardIterator>
+  ValuesInIteratorRangeGenerator(ForwardIterator begin, ForwardIterator end)
+      : container_(begin, end) {}
+  ~ValuesInIteratorRangeGenerator() override {}
+
+  ParamIteratorInterface<T>* Begin() const override {
+    return new Iterator(this, container_.begin());
+  }
+  ParamIteratorInterface<T>* End() const override {
+    return new Iterator(this, container_.end());
+  }
+
+ private:
+  typedef typename ::std::vector<T> ContainerType;
+
+  class Iterator : public ParamIteratorInterface<T> {
+   public:
+    Iterator(const ParamGeneratorInterface<T>* base,
+             typename ContainerType::const_iterator iterator)
+        : base_(base), iterator_(iterator) {}
+    ~Iterator() override {}
+
+    const ParamGeneratorInterface<T>* BaseGenerator() const override {
+      return base_;
+    }
+    void Advance() override {
+      ++iterator_;
+      value_.reset();
+    }
+    ParamIteratorInterface<T>* Clone() const override {
+      return new Iterator(*this);
+    }
+    // We need to use cached value referenced by iterator_ because *iterator_
+    // can return a temporary object (and of type other then T), so just
+    // having "return &*iterator_;" doesn't work.
+    // value_ is updated here and not in Advance() because Advance()
+    // can advance iterator_ beyond the end of the range, and we cannot
+    // detect that fact. The client code, on the other hand, is
+    // responsible for not calling Current() on an out-of-range iterator.
+    const T* Current() const override {
+      if (value_.get() == nullptr) value_.reset(new T(*iterator_));
+      return value_.get();
+    }
+    bool Equals(const ParamIteratorInterface<T>& other) const override {
+      // Having the same base generator guarantees that the other
+      // iterator is of the same type and we can downcast.
+      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
+          << "The program attempted to compare iterators "
+          << "from different generators." << std::endl;
+      return iterator_ ==
+          CheckedDowncastToActualType<const Iterator>(&other)->iterator_;
+    }
+
+   private:
+    Iterator(const Iterator& other)
+          // The explicit constructor call suppresses a false warning
+          // emitted by gcc when supplied with the -Wextra option.
+        : ParamIteratorInterface<T>(),
+          base_(other.base_),
+          iterator_(other.iterator_) {}
+
+    const ParamGeneratorInterface<T>* const base_;
+    typename ContainerType::const_iterator iterator_;
+    // A cached value of *iterator_. We keep it here to allow access by
+    // pointer in the wrapping iterator's operator->().
+    // value_ needs to be mutable to be accessed in Current().
+    // Use of std::unique_ptr helps manage cached value's lifetime,
+    // which is bound by the lifespan of the iterator itself.
+    mutable std::unique_ptr<const T> value_;
+  };  // class ValuesInIteratorRangeGenerator::Iterator
+
+  // No implementation - assignment is unsupported.
+  void operator=(const ValuesInIteratorRangeGenerator& other);
+
+  const ContainerType container_;
+};  // class ValuesInIteratorRangeGenerator
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// Default parameterized test name generator, returns a string containing the
+// integer test parameter index.
+template <class ParamType>
+std::string DefaultParamName(const TestParamInfo<ParamType>& info) {
+  Message name_stream;
+  name_stream << info.index;
+  return name_stream.GetString();
+}
+
+template <typename T = int>
+void TestNotEmpty() {
+  static_assert(sizeof(T) == 0, "Empty arguments are not allowed.");
+}
+template <typename T = int>
+void TestNotEmpty(const T&) {}
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// Stores a parameter value and later creates tests parameterized with that
+// value.
+template <class TestClass>
+class ParameterizedTestFactory : public TestFactoryBase {
+ public:
+  typedef typename TestClass::ParamType ParamType;
+  explicit ParameterizedTestFactory(ParamType parameter) :
+      parameter_(parameter) {}
+  Test* CreateTest() override {
+    TestClass::SetParam(&parameter_);
+    return new TestClass();
+  }
+
+ private:
+  const ParamType parameter_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestFactory);
+};
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// TestMetaFactoryBase is a base class for meta-factories that create
+// test factories for passing into MakeAndRegisterTestInfo function.
+template <class ParamType>
+class TestMetaFactoryBase {
+ public:
+  virtual ~TestMetaFactoryBase() {}
+
+  virtual TestFactoryBase* CreateTestFactory(ParamType parameter) = 0;
+};
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// TestMetaFactory creates test factories for passing into
+// MakeAndRegisterTestInfo function. Since MakeAndRegisterTestInfo receives
+// ownership of test factory pointer, same factory object cannot be passed
+// into that method twice. But ParameterizedTestSuiteInfo is going to call
+// it for each Test/Parameter value combination. Thus it needs meta factory
+// creator class.
+template <class TestSuite>
+class TestMetaFactory
+    : public TestMetaFactoryBase<typename TestSuite::ParamType> {
+ public:
+  using ParamType = typename TestSuite::ParamType;
+
+  TestMetaFactory() {}
+
+  TestFactoryBase* CreateTestFactory(ParamType parameter) override {
+    return new ParameterizedTestFactory<TestSuite>(parameter);
+  }
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestMetaFactory);
+};
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// ParameterizedTestSuiteInfoBase is a generic interface
+// to ParameterizedTestSuiteInfo classes. ParameterizedTestSuiteInfoBase
+// accumulates test information provided by TEST_P macro invocations
+// and generators provided by INSTANTIATE_TEST_SUITE_P macro invocations
+// and uses that information to register all resulting test instances
+// in RegisterTests method. The ParameterizeTestSuiteRegistry class holds
+// a collection of pointers to the ParameterizedTestSuiteInfo objects
+// and calls RegisterTests() on each of them when asked.
+class ParameterizedTestSuiteInfoBase {
+ public:
+  virtual ~ParameterizedTestSuiteInfoBase() {}
+
+  // Base part of test suite name for display purposes.
+  virtual const std::string& GetTestSuiteName() const = 0;
+  // Test case id to verify identity.
+  virtual TypeId GetTestSuiteTypeId() const = 0;
+  // UnitTest class invokes this method to register tests in this
+  // test suite right before running them in RUN_ALL_TESTS macro.
+  // This method should not be called more than once on any single
+  // instance of a ParameterizedTestSuiteInfoBase derived class.
+  virtual void RegisterTests() = 0;
+
+ protected:
+  ParameterizedTestSuiteInfoBase() {}
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestSuiteInfoBase);
+};
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// ParameterizedTestSuiteInfo accumulates tests obtained from TEST_P
+// macro invocations for a particular test suite and generators
+// obtained from INSTANTIATE_TEST_SUITE_P macro invocations for that
+// test suite. It registers tests with all values generated by all
+// generators when asked.
+template <class TestSuite>
+class ParameterizedTestSuiteInfo : public ParameterizedTestSuiteInfoBase {
+ public:
+  // ParamType and GeneratorCreationFunc are private types but are required
+  // for declarations of public methods AddTestPattern() and
+  // AddTestSuiteInstantiation().
+  using ParamType = typename TestSuite::ParamType;
+  // A function that returns an instance of appropriate generator type.
+  typedef ParamGenerator<ParamType>(GeneratorCreationFunc)();
+  using ParamNameGeneratorFunc = std::string(const TestParamInfo<ParamType>&);
+
+  explicit ParameterizedTestSuiteInfo(const char* name,
+                                      CodeLocation code_location)
+      : test_suite_name_(name), code_location_(code_location) {}
+
+  // Test case base name for display purposes.
+  const std::string& GetTestSuiteName() const override {
+    return test_suite_name_;
+  }
+  // Test case id to verify identity.
+  TypeId GetTestSuiteTypeId() const override { return GetTypeId<TestSuite>(); }
+  // TEST_P macro uses AddTestPattern() to record information
+  // about a single test in a LocalTestInfo structure.
+  // test_suite_name is the base name of the test suite (without invocation
+  // prefix). test_base_name is the name of an individual test without
+  // parameter index. For the test SequenceA/FooTest.DoBar/1 FooTest is
+  // test suite base name and DoBar is test base name.
+  void AddTestPattern(const char* test_suite_name, const char* test_base_name,
+                      TestMetaFactoryBase<ParamType>* meta_factory) {
+    tests_.push_back(std::shared_ptr<TestInfo>(
+        new TestInfo(test_suite_name, test_base_name, meta_factory)));
+  }
+  // INSTANTIATE_TEST_SUITE_P macro uses AddGenerator() to record information
+  // about a generator.
+  int AddTestSuiteInstantiation(const std::string& instantiation_name,
+                                GeneratorCreationFunc* func,
+                                ParamNameGeneratorFunc* name_func,
+                                const char* file, int line) {
+    instantiations_.push_back(
+        InstantiationInfo(instantiation_name, func, name_func, file, line));
+    return 0;  // Return value used only to run this method in namespace scope.
+  }
+  // UnitTest class invokes this method to register tests in this test suite
+  // test suites right before running tests in RUN_ALL_TESTS macro.
+  // This method should not be called more than once on any single
+  // instance of a ParameterizedTestSuiteInfoBase derived class.
+  // UnitTest has a guard to prevent from calling this method more than once.
+  void RegisterTests() override {
+    for (typename TestInfoContainer::iterator test_it = tests_.begin();
+         test_it != tests_.end(); ++test_it) {
+      std::shared_ptr<TestInfo> test_info = *test_it;
+      for (typename InstantiationContainer::iterator gen_it =
+               instantiations_.begin(); gen_it != instantiations_.end();
+               ++gen_it) {
+        const std::string& instantiation_name = gen_it->name;
+        ParamGenerator<ParamType> generator((*gen_it->generator)());
+        ParamNameGeneratorFunc* name_func = gen_it->name_func;
+        const char* file = gen_it->file;
+        int line = gen_it->line;
+
+        std::string test_suite_name;
+        if ( !instantiation_name.empty() )
+          test_suite_name = instantiation_name + "/";
+        test_suite_name += test_info->test_suite_base_name;
+
+        size_t i = 0;
+        std::set<std::string> test_param_names;
+        for (typename ParamGenerator<ParamType>::iterator param_it =
+                 generator.begin();
+             param_it != generator.end(); ++param_it, ++i) {
+          Message test_name_stream;
+
+          std::string param_name = name_func(
+              TestParamInfo<ParamType>(*param_it, i));
+
+          GTEST_CHECK_(IsValidParamName(param_name))
+              << "Parameterized test name '" << param_name
+              << "' is invalid, in " << file
+              << " line " << line << std::endl;
+
+          GTEST_CHECK_(test_param_names.count(param_name) == 0)
+              << "Duplicate parameterized test name '" << param_name
+              << "', in " << file << " line " << line << std::endl;
+
+          test_param_names.insert(param_name);
+
+          if (!test_info->test_base_name.empty()) {
+            test_name_stream << test_info->test_base_name << "/";
+          }
+          test_name_stream << param_name;
+          MakeAndRegisterTestInfo(
+              test_suite_name.c_str(), test_name_stream.GetString().c_str(),
+              nullptr,  // No type parameter.
+              PrintToString(*param_it).c_str(), code_location_,
+              GetTestSuiteTypeId(),
+              SuiteApiResolver<TestSuite>::GetSetUpCaseOrSuite(file, line),
+              SuiteApiResolver<TestSuite>::GetTearDownCaseOrSuite(file, line),
+              test_info->test_meta_factory->CreateTestFactory(*param_it));
+        }  // for param_it
+      }  // for gen_it
+    }  // for test_it
+  }    // RegisterTests
+
+ private:
+  // LocalTestInfo structure keeps information about a single test registered
+  // with TEST_P macro.
+  struct TestInfo {
+    TestInfo(const char* a_test_suite_base_name, const char* a_test_base_name,
+             TestMetaFactoryBase<ParamType>* a_test_meta_factory)
+        : test_suite_base_name(a_test_suite_base_name),
+          test_base_name(a_test_base_name),
+          test_meta_factory(a_test_meta_factory) {}
+
+    const std::string test_suite_base_name;
+    const std::string test_base_name;
+    const std::unique_ptr<TestMetaFactoryBase<ParamType> > test_meta_factory;
+  };
+  using TestInfoContainer = ::std::vector<std::shared_ptr<TestInfo> >;
+  // Records data received from INSTANTIATE_TEST_SUITE_P macros:
+  //  <Instantiation name, Sequence generator creation function,
+  //     Name generator function, Source file, Source line>
+  struct InstantiationInfo {
+      InstantiationInfo(const std::string &name_in,
+                        GeneratorCreationFunc* generator_in,
+                        ParamNameGeneratorFunc* name_func_in,
+                        const char* file_in,
+                        int line_in)
+          : name(name_in),
+            generator(generator_in),
+            name_func(name_func_in),
+            file(file_in),
+            line(line_in) {}
+
+      std::string name;
+      GeneratorCreationFunc* generator;
+      ParamNameGeneratorFunc* name_func;
+      const char* file;
+      int line;
+  };
+  typedef ::std::vector<InstantiationInfo> InstantiationContainer;
+
+  static bool IsValidParamName(const std::string& name) {
+    // Check for empty string
+    if (name.empty())
+      return false;
+
+    // Check for invalid characters
+    for (std::string::size_type index = 0; index < name.size(); ++index) {
+      if (!isalnum(name[index]) && name[index] != '_')
+        return false;
+    }
+
+    return true;
+  }
+
+  const std::string test_suite_name_;
+  CodeLocation code_location_;
+  TestInfoContainer tests_;
+  InstantiationContainer instantiations_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestSuiteInfo);
+};  // class ParameterizedTestSuiteInfo
+
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+template <class TestCase>
+using ParameterizedTestCaseInfo = ParameterizedTestSuiteInfo<TestCase>;
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// ParameterizedTestSuiteRegistry contains a map of
+// ParameterizedTestSuiteInfoBase classes accessed by test suite names. TEST_P
+// and INSTANTIATE_TEST_SUITE_P macros use it to locate their corresponding
+// ParameterizedTestSuiteInfo descriptors.
+class ParameterizedTestSuiteRegistry {
+ public:
+  ParameterizedTestSuiteRegistry() {}
+  ~ParameterizedTestSuiteRegistry() {
+    for (auto& test_suite_info : test_suite_infos_) {
+      delete test_suite_info;
+    }
+  }
+
+  // Looks up or creates and returns a structure containing information about
+  // tests and instantiations of a particular test suite.
+  template <class TestSuite>
+  ParameterizedTestSuiteInfo<TestSuite>* GetTestSuitePatternHolder(
+      const char* test_suite_name, CodeLocation code_location) {
+    ParameterizedTestSuiteInfo<TestSuite>* typed_test_info = nullptr;
+    for (auto& test_suite_info : test_suite_infos_) {
+      if (test_suite_info->GetTestSuiteName() == test_suite_name) {
+        if (test_suite_info->GetTestSuiteTypeId() != GetTypeId<TestSuite>()) {
+          // Complain about incorrect usage of Google Test facilities
+          // and terminate the program since we cannot guaranty correct
+          // test suite setup and tear-down in this case.
+          ReportInvalidTestSuiteType(test_suite_name, code_location);
+          posix::Abort();
+        } else {
+          // At this point we are sure that the object we found is of the same
+          // type we are looking for, so we downcast it to that type
+          // without further checks.
+          typed_test_info = CheckedDowncastToActualType<
+              ParameterizedTestSuiteInfo<TestSuite> >(test_suite_info);
+        }
+        break;
+      }
+    }
+    if (typed_test_info == nullptr) {
+      typed_test_info = new ParameterizedTestSuiteInfo<TestSuite>(
+          test_suite_name, code_location);
+      test_suite_infos_.push_back(typed_test_info);
+    }
+    return typed_test_info;
+  }
+  void RegisterTests() {
+    for (auto& test_suite_info : test_suite_infos_) {
+      test_suite_info->RegisterTests();
+    }
+  }
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  template <class TestCase>
+  ParameterizedTestCaseInfo<TestCase>* GetTestCasePatternHolder(
+      const char* test_case_name, CodeLocation code_location) {
+    return GetTestSuitePatternHolder<TestCase>(test_case_name, code_location);
+  }
+
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+ private:
+  using TestSuiteInfoContainer = ::std::vector<ParameterizedTestSuiteInfoBase*>;
+
+  TestSuiteInfoContainer test_suite_infos_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestSuiteRegistry);
+};
+
+}  // namespace internal
+
+// Forward declarations of ValuesIn(), which is implemented in
+// include/gtest/gtest-param-test.h.
+template <class Container>
+internal::ParamGenerator<typename Container::value_type> ValuesIn(
+    const Container& container);
+
+namespace internal {
+// Used in the Values() function to provide polymorphic capabilities.
+
+template <typename... Ts>
+class ValueArray {
+ public:
+  ValueArray(Ts... v) : v_{std::move(v)...} {}
+
+  template <typename T>
+  operator ParamGenerator<T>() const {  // NOLINT
+    return ValuesIn(MakeVector<T>(MakeIndexSequence<sizeof...(Ts)>()));
+  }
+
+ private:
+  template <typename T, size_t... I>
+  std::vector<T> MakeVector(IndexSequence<I...>) const {
+    return std::vector<T>{static_cast<T>(v_.template Get<I>())...};
+  }
+
+  FlatTuple<Ts...> v_;
+};
+
+template <typename... T>
+class CartesianProductGenerator
+    : public ParamGeneratorInterface<::std::tuple<T...>> {
+ public:
+  typedef ::std::tuple<T...> ParamType;
+
+  CartesianProductGenerator(const std::tuple<ParamGenerator<T>...>& g)
+      : generators_(g) {}
+  ~CartesianProductGenerator() override {}
+
+  ParamIteratorInterface<ParamType>* Begin() const override {
+    return new Iterator(this, generators_, false);
+  }
+  ParamIteratorInterface<ParamType>* End() const override {
+    return new Iterator(this, generators_, true);
+  }
+
+ private:
+  template <class I>
+  class IteratorImpl;
+  template <size_t... I>
+  class IteratorImpl<IndexSequence<I...>>
+      : public ParamIteratorInterface<ParamType> {
+   public:
+    IteratorImpl(const ParamGeneratorInterface<ParamType>* base,
+             const std::tuple<ParamGenerator<T>...>& generators, bool is_end)
+        : base_(base),
+          begin_(std::get<I>(generators).begin()...),
+          end_(std::get<I>(generators).end()...),
+          current_(is_end ? end_ : begin_) {
+      ComputeCurrentValue();
+    }
+    ~IteratorImpl() override {}
+
+    const ParamGeneratorInterface<ParamType>* BaseGenerator() const override {
+      return base_;
+    }
+    // Advance should not be called on beyond-of-range iterators
+    // so no component iterators must be beyond end of range, either.
+    void Advance() override {
+      assert(!AtEnd());
+      // Advance the last iterator.
+      ++std::get<sizeof...(T) - 1>(current_);
+      // if that reaches end, propagate that up.
+      AdvanceIfEnd<sizeof...(T) - 1>();
+      ComputeCurrentValue();
+    }
+    ParamIteratorInterface<ParamType>* Clone() const override {
+      return new IteratorImpl(*this);
+    }
+
+    const ParamType* Current() const override { return current_value_.get(); }
+
+    bool Equals(const ParamIteratorInterface<ParamType>& other) const override {
+      // Having the same base generator guarantees that the other
+      // iterator is of the same type and we can downcast.
+      GTEST_CHECK_(BaseGenerator() == other.BaseGenerator())
+          << "The program attempted to compare iterators "
+          << "from different generators." << std::endl;
+      const IteratorImpl* typed_other =
+          CheckedDowncastToActualType<const IteratorImpl>(&other);
+
+      // We must report iterators equal if they both point beyond their
+      // respective ranges. That can happen in a variety of fashions,
+      // so we have to consult AtEnd().
+      if (AtEnd() && typed_other->AtEnd()) return true;
+
+      bool same = true;
+      bool dummy[] = {
+          (same = same && std::get<I>(current_) ==
+                              std::get<I>(typed_other->current_))...};
+      (void)dummy;
+      return same;
+    }
+
+   private:
+    template <size_t ThisI>
+    void AdvanceIfEnd() {
+      if (std::get<ThisI>(current_) != std::get<ThisI>(end_)) return;
+
+      bool last = ThisI == 0;
+      if (last) {
+        // We are done. Nothing else to propagate.
+        return;
+      }
+
+      constexpr size_t NextI = ThisI - (ThisI != 0);
+      std::get<ThisI>(current_) = std::get<ThisI>(begin_);
+      ++std::get<NextI>(current_);
+      AdvanceIfEnd<NextI>();
+    }
+
+    void ComputeCurrentValue() {
+      if (!AtEnd())
+        current_value_ = std::make_shared<ParamType>(*std::get<I>(current_)...);
+    }
+    bool AtEnd() const {
+      bool at_end = false;
+      bool dummy[] = {
+          (at_end = at_end || std::get<I>(current_) == std::get<I>(end_))...};
+      (void)dummy;
+      return at_end;
+    }
+
+    const ParamGeneratorInterface<ParamType>* const base_;
+    std::tuple<typename ParamGenerator<T>::iterator...> begin_;
+    std::tuple<typename ParamGenerator<T>::iterator...> end_;
+    std::tuple<typename ParamGenerator<T>::iterator...> current_;
+    std::shared_ptr<ParamType> current_value_;
+  };
+
+  using Iterator = IteratorImpl<typename MakeIndexSequence<sizeof...(T)>::type>;
+
+  std::tuple<ParamGenerator<T>...> generators_;
+};
+
+template <class... Gen>
+class CartesianProductHolder {
+ public:
+  CartesianProductHolder(const Gen&... g) : generators_(g...) {}
+  template <typename... T>
+  operator ParamGenerator<::std::tuple<T...>>() const {
+    return ParamGenerator<::std::tuple<T...>>(
+        new CartesianProductGenerator<T...>(generators_));
+  }
+
+ private:
+  std::tuple<Gen...> generators_;
+};
+
+}  // namespace internal
+}  // namespace testing
+
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PARAM_UTIL_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-port-arch.h b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-port-arch.h
new file mode 100644
index 0000000000000000000000000000000000000000..cece93dba12d4983c7ef0b3413b7964c4477abca
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-port-arch.h
@@ -0,0 +1,107 @@
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This header file defines the GTEST_OS_* macro.
+// It is separate from gtest-port.h so that custom/gtest-port.h can include it.
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_ARCH_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_ARCH_H_
+
+// Determines the platform on which Google Test is compiled.
+#ifdef __CYGWIN__
+# define GTEST_OS_CYGWIN 1
+# elif defined(__MINGW__) || defined(__MINGW32__) || defined(__MINGW64__)
+#  define GTEST_OS_WINDOWS_MINGW 1
+#  define GTEST_OS_WINDOWS 1
+#elif defined _WIN32
+# define GTEST_OS_WINDOWS 1
+# ifdef _WIN32_WCE
+#  define GTEST_OS_WINDOWS_MOBILE 1
+# elif defined(WINAPI_FAMILY)
+#  include <winapifamily.h>
+#  if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
+#   define GTEST_OS_WINDOWS_DESKTOP 1
+#  elif WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_PHONE_APP)
+#   define GTEST_OS_WINDOWS_PHONE 1
+#  elif WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP)
+#   define GTEST_OS_WINDOWS_RT 1
+#  elif WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_TV_TITLE)
+#   define GTEST_OS_WINDOWS_PHONE 1
+#   define GTEST_OS_WINDOWS_TV_TITLE 1
+#  else
+    // WINAPI_FAMILY defined but no known partition matched.
+    // Default to desktop.
+#   define GTEST_OS_WINDOWS_DESKTOP 1
+#  endif
+# else
+#  define GTEST_OS_WINDOWS_DESKTOP 1
+# endif  // _WIN32_WCE
+#elif defined __OS2__
+# define GTEST_OS_OS2 1
+#elif defined __APPLE__
+# define GTEST_OS_MAC 1
+# if TARGET_OS_IPHONE
+#  define GTEST_OS_IOS 1
+# endif
+#elif defined __DragonFly__
+# define GTEST_OS_DRAGONFLY 1
+#elif defined __FreeBSD__
+# define GTEST_OS_FREEBSD 1
+#elif defined __Fuchsia__
+# define GTEST_OS_FUCHSIA 1
+#elif defined(__GLIBC__) && defined(__FreeBSD_kernel__)
+# define GTEST_OS_GNU_KFREEBSD 1
+#elif defined __linux__
+# define GTEST_OS_LINUX 1
+# if defined __ANDROID__
+#  define GTEST_OS_LINUX_ANDROID 1
+# endif
+#elif defined __MVS__
+# define GTEST_OS_ZOS 1
+#elif defined(__sun) && defined(__SVR4)
+# define GTEST_OS_SOLARIS 1
+#elif defined(_AIX)
+# define GTEST_OS_AIX 1
+#elif defined(__hpux)
+# define GTEST_OS_HPUX 1
+#elif defined __native_client__
+# define GTEST_OS_NACL 1
+#elif defined __NetBSD__
+# define GTEST_OS_NETBSD 1
+#elif defined __OpenBSD__
+# define GTEST_OS_OPENBSD 1
+#elif defined __QNX__
+# define GTEST_OS_QNX 1
+#elif defined(__HAIKU__)
+#define GTEST_OS_HAIKU 1
+#endif  // __CYGWIN__
+
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_ARCH_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-port.h b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-port.h
new file mode 100644
index 0000000000000000000000000000000000000000..063fcb1083babb5226ff1098339b2bac06f08250
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-port.h
@@ -0,0 +1,2231 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Low-level types and utilities for porting Google Test to various
+// platforms.  All macros ending with _ and symbols defined in an
+// internal namespace are subject to change without notice.  Code
+// outside Google Test MUST NOT USE THEM DIRECTLY.  Macros that don't
+// end with _ are part of Google Test's public API and can be used by
+// code outside Google Test.
+//
+// This file is fundamental to Google Test.  All other Google Test source
+// files are expected to #include this.  Therefore, it cannot #include
+// any other Google Test header.
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
+
+// Environment-describing macros
+// -----------------------------
+//
+// Google Test can be used in many different environments.  Macros in
+// this section tell Google Test what kind of environment it is being
+// used in, such that Google Test can provide environment-specific
+// features and implementations.
+//
+// Google Test tries to automatically detect the properties of its
+// environment, so users usually don't need to worry about these
+// macros.  However, the automatic detection is not perfect.
+// Sometimes it's necessary for a user to define some of the following
+// macros in the build script to override Google Test's decisions.
+//
+// If the user doesn't define a macro in the list, Google Test will
+// provide a default definition.  After this header is #included, all
+// macros in this list will be defined to either 1 or 0.
+//
+// Notes to maintainers:
+//   - Each macro here is a user-tweakable knob; do not grow the list
+//     lightly.
+//   - Use #if to key off these macros.  Don't use #ifdef or "#if
+//     defined(...)", which will not work as these macros are ALWAYS
+//     defined.
+//
+//   GTEST_HAS_CLONE          - Define it to 1/0 to indicate that clone(2)
+//                              is/isn't available.
+//   GTEST_HAS_EXCEPTIONS     - Define it to 1/0 to indicate that exceptions
+//                              are enabled.
+//   GTEST_HAS_POSIX_RE       - Define it to 1/0 to indicate that POSIX regular
+//                              expressions are/aren't available.
+//   GTEST_HAS_PTHREAD        - Define it to 1/0 to indicate that <pthread.h>
+//                              is/isn't available.
+//   GTEST_HAS_RTTI           - Define it to 1/0 to indicate that RTTI is/isn't
+//                              enabled.
+//   GTEST_HAS_STD_WSTRING    - Define it to 1/0 to indicate that
+//                              std::wstring does/doesn't work (Google Test can
+//                              be used where std::wstring is unavailable).
+//   GTEST_HAS_SEH            - Define it to 1/0 to indicate whether the
+//                              compiler supports Microsoft's "Structured
+//                              Exception Handling".
+//   GTEST_HAS_STREAM_REDIRECTION
+//                            - Define it to 1/0 to indicate whether the
+//                              platform supports I/O stream redirection using
+//                              dup() and dup2().
+//   GTEST_LINKED_AS_SHARED_LIBRARY
+//                            - Define to 1 when compiling tests that use
+//                              Google Test as a shared library (known as
+//                              DLL on Windows).
+//   GTEST_CREATE_SHARED_LIBRARY
+//                            - Define to 1 when compiling Google Test itself
+//                              as a shared library.
+//   GTEST_DEFAULT_DEATH_TEST_STYLE
+//                            - The default value of --gtest_death_test_style.
+//                              The legacy default has been "fast" in the open
+//                              source version since 2008. The recommended value
+//                              is "threadsafe", and can be set in
+//                              custom/gtest-port.h.
+
+// Platform-indicating macros
+// --------------------------
+//
+// Macros indicating the platform on which Google Test is being used
+// (a macro is defined to 1 if compiled on the given platform;
+// otherwise UNDEFINED -- it's never defined to 0.).  Google Test
+// defines these macros automatically.  Code outside Google Test MUST
+// NOT define them.
+//
+//   GTEST_OS_AIX      - IBM AIX
+//   GTEST_OS_CYGWIN   - Cygwin
+//   GTEST_OS_DRAGONFLY - DragonFlyBSD
+//   GTEST_OS_FREEBSD  - FreeBSD
+//   GTEST_OS_FUCHSIA  - Fuchsia
+//   GTEST_OS_GNU_KFREEBSD - GNU/kFreeBSD
+//   GTEST_OS_HAIKU    - Haiku
+//   GTEST_OS_HPUX     - HP-UX
+//   GTEST_OS_LINUX    - Linux
+//     GTEST_OS_LINUX_ANDROID - Google Android
+//   GTEST_OS_MAC      - Mac OS X
+//     GTEST_OS_IOS    - iOS
+//   GTEST_OS_NACL     - Google Native Client (NaCl)
+//   GTEST_OS_NETBSD   - NetBSD
+//   GTEST_OS_OPENBSD  - OpenBSD
+//   GTEST_OS_OS2      - OS/2
+//   GTEST_OS_QNX      - QNX
+//   GTEST_OS_SOLARIS  - Sun Solaris
+//   GTEST_OS_WINDOWS  - Windows (Desktop, MinGW, or Mobile)
+//     GTEST_OS_WINDOWS_DESKTOP  - Windows Desktop
+//     GTEST_OS_WINDOWS_MINGW    - MinGW
+//     GTEST_OS_WINDOWS_MOBILE   - Windows Mobile
+//     GTEST_OS_WINDOWS_PHONE    - Windows Phone
+//     GTEST_OS_WINDOWS_RT       - Windows Store App/WinRT
+//   GTEST_OS_ZOS      - z/OS
+//
+// Among the platforms, Cygwin, Linux, Mac OS X, and Windows have the
+// most stable support.  Since core members of the Google Test project
+// don't have access to other platforms, support for them may be less
+// stable.  If you notice any problems on your platform, please notify
+// googletestframework@googlegroups.com (patches for fixing them are
+// even more welcome!).
+//
+// It is possible that none of the GTEST_OS_* macros are defined.
+
+// Feature-indicating macros
+// -------------------------
+//
+// Macros indicating which Google Test features are available (a macro
+// is defined to 1 if the corresponding feature is supported;
+// otherwise UNDEFINED -- it's never defined to 0.).  Google Test
+// defines these macros automatically.  Code outside Google Test MUST
+// NOT define them.
+//
+// These macros are public so that portable tests can be written.
+// Such tests typically surround code using a feature with an #if
+// which controls that code.  For example:
+//
+// #if GTEST_HAS_DEATH_TEST
+//   EXPECT_DEATH(DoSomethingDeadly());
+// #endif
+//
+//   GTEST_HAS_DEATH_TEST   - death tests
+//   GTEST_HAS_TYPED_TEST   - typed tests
+//   GTEST_HAS_TYPED_TEST_P - type-parameterized tests
+//   GTEST_IS_THREADSAFE    - Google Test is thread-safe.
+//   GOOGLETEST_CM0007 DO NOT DELETE
+//   GTEST_USES_POSIX_RE    - enhanced POSIX regex is used. Do not confuse with
+//                            GTEST_HAS_POSIX_RE (see above) which users can
+//                            define themselves.
+//   GTEST_USES_SIMPLE_RE   - our own simple regex is used;
+//                            the above RE\b(s) are mutually exclusive.
+
+// Misc public macros
+// ------------------
+//
+//   GTEST_FLAG(flag_name)  - references the variable corresponding to
+//                            the given Google Test flag.
+
+// Internal utilities
+// ------------------
+//
+// The following macros and utilities are for Google Test's INTERNAL
+// use only.  Code outside Google Test MUST NOT USE THEM DIRECTLY.
+//
+// Macros for basic C++ coding:
+//   GTEST_AMBIGUOUS_ELSE_BLOCKER_ - for disabling a gcc warning.
+//   GTEST_ATTRIBUTE_UNUSED_  - declares that a class' instances or a
+//                              variable don't have to be used.
+//   GTEST_DISALLOW_ASSIGN_   - disables operator=.
+//   GTEST_DISALLOW_COPY_AND_ASSIGN_ - disables copy ctor and operator=.
+//   GTEST_MUST_USE_RESULT_   - declares that a function's result must be used.
+//   GTEST_INTENTIONAL_CONST_COND_PUSH_ - start code section where MSVC C4127 is
+//                                        suppressed (constant conditional).
+//   GTEST_INTENTIONAL_CONST_COND_POP_  - finish code section where MSVC C4127
+//                                        is suppressed.
+//
+// Synchronization:
+//   Mutex, MutexLock, ThreadLocal, GetThreadCount()
+//                            - synchronization primitives.
+//
+// Regular expressions:
+//   RE             - a simple regular expression class using the POSIX
+//                    Extended Regular Expression syntax on UNIX-like platforms
+//                    GOOGLETEST_CM0008 DO NOT DELETE
+//                    or a reduced regular exception syntax on other
+//                    platforms, including Windows.
+// Logging:
+//   GTEST_LOG_()   - logs messages at the specified severity level.
+//   LogToStderr()  - directs all log messages to stderr.
+//   FlushInfoLog() - flushes informational log messages.
+//
+// Stdout and stderr capturing:
+//   CaptureStdout()     - starts capturing stdout.
+//   GetCapturedStdout() - stops capturing stdout and returns the captured
+//                         string.
+//   CaptureStderr()     - starts capturing stderr.
+//   GetCapturedStderr() - stops capturing stderr and returns the captured
+//                         string.
+//
+// Integer types:
+//   TypeWithSize   - maps an integer to a int type.
+//   Int32, UInt32, Int64, UInt64, TimeInMillis
+//                  - integers of known sizes.
+//   BiggestInt     - the biggest signed integer type.
+//
+// Command-line utilities:
+//   GTEST_DECLARE_*()  - declares a flag.
+//   GTEST_DEFINE_*()   - defines a flag.
+//   GetInjectableArgvs() - returns the command line as a vector of strings.
+//
+// Environment variable utilities:
+//   GetEnv()             - gets the value of an environment variable.
+//   BoolFromGTestEnv()   - parses a bool environment variable.
+//   Int32FromGTestEnv()  - parses an Int32 environment variable.
+//   StringFromGTestEnv() - parses a string environment variable.
+//
+// Deprecation warnings:
+//   GTEST_INTERNAL_DEPRECATED(message) - attribute marking a function as
+//                                        deprecated; calling a marked function
+//                                        should generate a compiler warning
+
+#include <ctype.h>   // for isspace, etc
+#include <stddef.h>  // for ptrdiff_t
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <memory>
+#include <type_traits>
+
+#ifndef _WIN32_WCE
+# include <sys/types.h>
+# include <sys/stat.h>
+#endif  // !_WIN32_WCE
+
+#if defined __APPLE__
+# include <AvailabilityMacros.h>
+# include <TargetConditionals.h>
+#endif
+
+#include <algorithm>  // NOLINT
+#include <iostream>   // NOLINT
+#include <sstream>    // NOLINT
+#include <string>     // NOLINT
+#include <tuple>
+#include <utility>
+#include <vector>  // NOLINT
+
+#include "gtest/internal/gtest-port-arch.h"
+#include "gtest/internal/custom/gtest-port.h"
+
+#if !defined(GTEST_DEV_EMAIL_)
+# define GTEST_DEV_EMAIL_ "googletestframework@@googlegroups.com"
+# define GTEST_FLAG_PREFIX_ "gtest_"
+# define GTEST_FLAG_PREFIX_DASH_ "gtest-"
+# define GTEST_FLAG_PREFIX_UPPER_ "GTEST_"
+# define GTEST_NAME_ "Google Test"
+# define GTEST_PROJECT_URL_ "https://github.com/google/googletest/"
+#endif  // !defined(GTEST_DEV_EMAIL_)
+
+#if !defined(GTEST_INIT_GOOGLE_TEST_NAME_)
+# define GTEST_INIT_GOOGLE_TEST_NAME_ "testing::InitGoogleTest"
+#endif  // !defined(GTEST_INIT_GOOGLE_TEST_NAME_)
+
+// Determines the version of gcc that is used to compile this.
+#ifdef __GNUC__
+// 40302 means version 4.3.2.
+# define GTEST_GCC_VER_ \
+    (__GNUC__*10000 + __GNUC_MINOR__*100 + __GNUC_PATCHLEVEL__)
+#endif  // __GNUC__
+
+// Macros for disabling Microsoft Visual C++ warnings.
+//
+//   GTEST_DISABLE_MSC_WARNINGS_PUSH_(4800 4385)
+//   /* code that triggers warnings C4800 and C4385 */
+//   GTEST_DISABLE_MSC_WARNINGS_POP_()
+#if defined(_MSC_VER)
+# define GTEST_DISABLE_MSC_WARNINGS_PUSH_(warnings) \
+    __pragma(warning(push))                        \
+    __pragma(warning(disable: warnings))
+# define GTEST_DISABLE_MSC_WARNINGS_POP_()          \
+    __pragma(warning(pop))
+#else
+// Not all compilers are MSVC
+# define GTEST_DISABLE_MSC_WARNINGS_PUSH_(warnings)
+# define GTEST_DISABLE_MSC_WARNINGS_POP_()
+#endif
+
+// Clang on Windows does not understand MSVC's pragma warning.
+// We need clang-specific way to disable function deprecation warning.
+#ifdef __clang__
+# define GTEST_DISABLE_MSC_DEPRECATED_PUSH_()                         \
+    _Pragma("clang diagnostic push")                                  \
+    _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"") \
+    _Pragma("clang diagnostic ignored \"-Wdeprecated-implementations\"")
+#define GTEST_DISABLE_MSC_DEPRECATED_POP_() \
+    _Pragma("clang diagnostic pop")
+#else
+# define GTEST_DISABLE_MSC_DEPRECATED_PUSH_() \
+    GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996)
+# define GTEST_DISABLE_MSC_DEPRECATED_POP_() \
+    GTEST_DISABLE_MSC_WARNINGS_POP_()
+#endif
+
+// Brings in definitions for functions used in the testing::internal::posix
+// namespace (read, write, close, chdir, isatty, stat). We do not currently
+// use them on Windows Mobile.
+#if GTEST_OS_WINDOWS
+# if !GTEST_OS_WINDOWS_MOBILE
+#  include <direct.h>
+#  include <io.h>
+# endif
+// In order to avoid having to include <windows.h>, use forward declaration
+#if GTEST_OS_WINDOWS_MINGW && !defined(__MINGW64_VERSION_MAJOR)
+// MinGW defined _CRITICAL_SECTION and _RTL_CRITICAL_SECTION as two
+// separate (equivalent) structs, instead of using typedef
+typedef struct _CRITICAL_SECTION GTEST_CRITICAL_SECTION;
+#else
+// Assume CRITICAL_SECTION is a typedef of _RTL_CRITICAL_SECTION.
+// This assumption is verified by
+// WindowsTypesTest.CRITICAL_SECTIONIs_RTL_CRITICAL_SECTION.
+typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
+#endif
+#else
+// This assumes that non-Windows OSes provide unistd.h. For OSes where this
+// is not the case, we need to include headers that provide the functions
+// mentioned above.
+# include <unistd.h>
+# include <strings.h>
+#endif  // GTEST_OS_WINDOWS
+
+#if GTEST_OS_LINUX_ANDROID
+// Used to define __ANDROID_API__ matching the target NDK API level.
+#  include <android/api-level.h>  // NOLINT
+#endif
+
+// Defines this to true if and only if Google Test can use POSIX regular
+// expressions.
+#ifndef GTEST_HAS_POSIX_RE
+# if GTEST_OS_LINUX_ANDROID
+// On Android, <regex.h> is only available starting with Gingerbread.
+#  define GTEST_HAS_POSIX_RE (__ANDROID_API__ >= 9)
+# else
+#  define GTEST_HAS_POSIX_RE (!GTEST_OS_WINDOWS)
+# endif
+#endif
+
+#if GTEST_USES_PCRE
+// The appropriate headers have already been included.
+
+#elif GTEST_HAS_POSIX_RE
+
+// On some platforms, <regex.h> needs someone to define size_t, and
+// won't compile otherwise.  We can #include it here as we already
+// included <stdlib.h>, which is guaranteed to define size_t through
+// <stddef.h>.
+# include <regex.h>  // NOLINT
+
+# define GTEST_USES_POSIX_RE 1
+
+#elif GTEST_OS_WINDOWS
+
+// <regex.h> is not available on Windows.  Use our own simple regex
+// implementation instead.
+# define GTEST_USES_SIMPLE_RE 1
+
+#else
+
+// <regex.h> may not be available on this platform.  Use our own
+// simple regex implementation instead.
+# define GTEST_USES_SIMPLE_RE 1
+
+#endif  // GTEST_USES_PCRE
+
+#ifndef GTEST_HAS_EXCEPTIONS
+// The user didn't tell us whether exceptions are enabled, so we need
+// to figure it out.
+# if defined(_MSC_VER) && defined(_CPPUNWIND)
+// MSVC defines _CPPUNWIND to 1 if and only if exceptions are enabled.
+#  define GTEST_HAS_EXCEPTIONS 1
+# elif defined(__BORLANDC__)
+// C++Builder's implementation of the STL uses the _HAS_EXCEPTIONS
+// macro to enable exceptions, so we'll do the same.
+// Assumes that exceptions are enabled by default.
+#  ifndef _HAS_EXCEPTIONS
+#   define _HAS_EXCEPTIONS 1
+#  endif  // _HAS_EXCEPTIONS
+#  define GTEST_HAS_EXCEPTIONS _HAS_EXCEPTIONS
+# elif defined(__clang__)
+// clang defines __EXCEPTIONS if and only if exceptions are enabled before clang
+// 220714, but if and only if cleanups are enabled after that. In Obj-C++ files,
+// there can be cleanups for ObjC exceptions which also need cleanups, even if
+// C++ exceptions are disabled. clang has __has_feature(cxx_exceptions) which
+// checks for C++ exceptions starting at clang r206352, but which checked for
+// cleanups prior to that. To reliably check for C++ exception availability with
+// clang, check for
+// __EXCEPTIONS && __has_feature(cxx_exceptions).
+#  define GTEST_HAS_EXCEPTIONS (__EXCEPTIONS && __has_feature(cxx_exceptions))
+# elif defined(__GNUC__) && __EXCEPTIONS
+// gcc defines __EXCEPTIONS to 1 if and only if exceptions are enabled.
+#  define GTEST_HAS_EXCEPTIONS 1
+# elif defined(__SUNPRO_CC)
+// Sun Pro CC supports exceptions.  However, there is no compile-time way of
+// detecting whether they are enabled or not.  Therefore, we assume that
+// they are enabled unless the user tells us otherwise.
+#  define GTEST_HAS_EXCEPTIONS 1
+# elif defined(__IBMCPP__) && __EXCEPTIONS
+// xlC defines __EXCEPTIONS to 1 if and only if exceptions are enabled.
+#  define GTEST_HAS_EXCEPTIONS 1
+# elif defined(__HP_aCC)
+// Exception handling is in effect by default in HP aCC compiler. It has to
+// be turned of by +noeh compiler option if desired.
+#  define GTEST_HAS_EXCEPTIONS 1
+# else
+// For other compilers, we assume exceptions are disabled to be
+// conservative.
+#  define GTEST_HAS_EXCEPTIONS 0
+# endif  // defined(_MSC_VER) || defined(__BORLANDC__)
+#endif  // GTEST_HAS_EXCEPTIONS
+
+#if !defined(GTEST_HAS_STD_STRING)
+// Even though we don't use this macro any longer, we keep it in case
+// some clients still depend on it.
+# define GTEST_HAS_STD_STRING 1
+#elif !GTEST_HAS_STD_STRING
+// The user told us that ::std::string isn't available.
+# error "::std::string isn't available."
+#endif  // !defined(GTEST_HAS_STD_STRING)
+
+#ifndef GTEST_HAS_STD_WSTRING
+// The user didn't tell us whether ::std::wstring is available, so we need
+// to figure it out.
+// Cygwin 1.7 and below doesn't support ::std::wstring.
+// Solaris' libc++ doesn't support it either.  Android has
+// no support for it at least as recent as Froyo (2.2).
+#define GTEST_HAS_STD_WSTRING                                         \
+  (!(GTEST_OS_LINUX_ANDROID || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS || \
+     GTEST_OS_HAIKU))
+
+#endif  // GTEST_HAS_STD_WSTRING
+
+// Determines whether RTTI is available.
+#ifndef GTEST_HAS_RTTI
+// The user didn't tell us whether RTTI is enabled, so we need to
+// figure it out.
+
+# ifdef _MSC_VER
+
+#ifdef _CPPRTTI  // MSVC defines this macro if and only if RTTI is enabled.
+#   define GTEST_HAS_RTTI 1
+#  else
+#   define GTEST_HAS_RTTI 0
+#  endif
+
+// Starting with version 4.3.2, gcc defines __GXX_RTTI if and only if RTTI is
+// enabled.
+# elif defined(__GNUC__)
+
+#  ifdef __GXX_RTTI
+// When building against STLport with the Android NDK and with
+// -frtti -fno-exceptions, the build fails at link time with undefined
+// references to __cxa_bad_typeid. Note sure if STL or toolchain bug,
+// so disable RTTI when detected.
+#   if GTEST_OS_LINUX_ANDROID && defined(_STLPORT_MAJOR) && \
+       !defined(__EXCEPTIONS)
+#    define GTEST_HAS_RTTI 0
+#   else
+#    define GTEST_HAS_RTTI 1
+#   endif  // GTEST_OS_LINUX_ANDROID && __STLPORT_MAJOR && !__EXCEPTIONS
+#  else
+#   define GTEST_HAS_RTTI 0
+#  endif  // __GXX_RTTI
+
+// Clang defines __GXX_RTTI starting with version 3.0, but its manual recommends
+// using has_feature instead. has_feature(cxx_rtti) is supported since 2.7, the
+// first version with C++ support.
+# elif defined(__clang__)
+
+#  define GTEST_HAS_RTTI __has_feature(cxx_rtti)
+
+// Starting with version 9.0 IBM Visual Age defines __RTTI_ALL__ to 1 if
+// both the typeid and dynamic_cast features are present.
+# elif defined(__IBMCPP__) && (__IBMCPP__ >= 900)
+
+#  ifdef __RTTI_ALL__
+#   define GTEST_HAS_RTTI 1
+#  else
+#   define GTEST_HAS_RTTI 0
+#  endif
+
+# else
+
+// For all other compilers, we assume RTTI is enabled.
+#  define GTEST_HAS_RTTI 1
+
+# endif  // _MSC_VER
+
+#endif  // GTEST_HAS_RTTI
+
+// It's this header's responsibility to #include <typeinfo> when RTTI
+// is enabled.
+#if GTEST_HAS_RTTI
+# include <typeinfo>
+#endif
+
+// Determines whether Google Test can use the pthreads library.
+#ifndef GTEST_HAS_PTHREAD
+// The user didn't tell us explicitly, so we make reasonable assumptions about
+// which platforms have pthreads support.
+//
+// To disable threading support in Google Test, add -DGTEST_HAS_PTHREAD=0
+// to your compiler flags.
+#define GTEST_HAS_PTHREAD                                                      \
+  (GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_HPUX || GTEST_OS_QNX ||          \
+   GTEST_OS_FREEBSD || GTEST_OS_NACL || GTEST_OS_NETBSD || GTEST_OS_FUCHSIA || \
+   GTEST_OS_DRAGONFLY || GTEST_OS_GNU_KFREEBSD || GTEST_OS_OPENBSD ||          \
+   GTEST_OS_HAIKU)
+#endif  // GTEST_HAS_PTHREAD
+
+#if GTEST_HAS_PTHREAD
+// gtest-port.h guarantees to #include <pthread.h> when GTEST_HAS_PTHREAD is
+// true.
+# include <pthread.h>  // NOLINT
+
+// For timespec and nanosleep, used below.
+# include <time.h>  // NOLINT
+#endif
+
+// Determines whether clone(2) is supported.
+// Usually it will only be available on Linux, excluding
+// Linux on the Itanium architecture.
+// Also see http://linux.die.net/man/2/clone.
+#ifndef GTEST_HAS_CLONE
+// The user didn't tell us, so we need to figure it out.
+
+# if GTEST_OS_LINUX && !defined(__ia64__)
+#  if GTEST_OS_LINUX_ANDROID
+// On Android, clone() became available at different API levels for each 32-bit
+// architecture.
+#    if defined(__LP64__) || \
+        (defined(__arm__) && __ANDROID_API__ >= 9) || \
+        (defined(__mips__) && __ANDROID_API__ >= 12) || \
+        (defined(__i386__) && __ANDROID_API__ >= 17)
+#     define GTEST_HAS_CLONE 1
+#    else
+#     define GTEST_HAS_CLONE 0
+#    endif
+#  else
+#   define GTEST_HAS_CLONE 1
+#  endif
+# else
+#  define GTEST_HAS_CLONE 0
+# endif  // GTEST_OS_LINUX && !defined(__ia64__)
+
+#endif  // GTEST_HAS_CLONE
+
+// Determines whether to support stream redirection. This is used to test
+// output correctness and to implement death tests.
+#ifndef GTEST_HAS_STREAM_REDIRECTION
+// By default, we assume that stream redirection is supported on all
+// platforms except known mobile ones.
+# if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT
+#  define GTEST_HAS_STREAM_REDIRECTION 0
+# else
+#  define GTEST_HAS_STREAM_REDIRECTION 1
+# endif  // !GTEST_OS_WINDOWS_MOBILE
+#endif  // GTEST_HAS_STREAM_REDIRECTION
+
+// Determines whether to support death tests.
+// pops up a dialog window that cannot be suppressed programmatically.
+#if (GTEST_OS_LINUX || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS ||             \
+     (GTEST_OS_MAC && !GTEST_OS_IOS) ||                                   \
+     (GTEST_OS_WINDOWS_DESKTOP && _MSC_VER) || GTEST_OS_WINDOWS_MINGW ||  \
+     GTEST_OS_AIX || GTEST_OS_HPUX || GTEST_OS_OPENBSD || GTEST_OS_QNX || \
+     GTEST_OS_FREEBSD || GTEST_OS_NETBSD || GTEST_OS_FUCHSIA ||           \
+     GTEST_OS_DRAGONFLY || GTEST_OS_GNU_KFREEBSD || GTEST_OS_HAIKU)
+# define GTEST_HAS_DEATH_TEST 1
+#endif
+
+// Determines whether to support type-driven tests.
+
+// Typed tests need <typeinfo> and variadic macros, which GCC, VC++ 8.0,
+// Sun Pro CC, IBM Visual Age, and HP aCC support.
+#if defined(__GNUC__) || defined(_MSC_VER) || defined(__SUNPRO_CC) || \
+    defined(__IBMCPP__) || defined(__HP_aCC)
+# define GTEST_HAS_TYPED_TEST 1
+# define GTEST_HAS_TYPED_TEST_P 1
+#endif
+
+// Determines whether the system compiler uses UTF-16 for encoding wide strings.
+#define GTEST_WIDE_STRING_USES_UTF16_ \
+  (GTEST_OS_WINDOWS || GTEST_OS_CYGWIN || GTEST_OS_AIX || GTEST_OS_OS2)
+
+// Determines whether test results can be streamed to a socket.
+#if GTEST_OS_LINUX || GTEST_OS_GNU_KFREEBSD || GTEST_OS_DRAGONFLY || \
+    GTEST_OS_FREEBSD || GTEST_OS_NETBSD || GTEST_OS_OPENBSD
+# define GTEST_CAN_STREAM_RESULTS_ 1
+#endif
+
+// Defines some utility macros.
+
+// The GNU compiler emits a warning if nested "if" statements are followed by
+// an "else" statement and braces are not used to explicitly disambiguate the
+// "else" binding.  This leads to problems with code like:
+//
+//   if (gate)
+//     ASSERT_*(condition) << "Some message";
+//
+// The "switch (0) case 0:" idiom is used to suppress this.
+#ifdef __INTEL_COMPILER
+# define GTEST_AMBIGUOUS_ELSE_BLOCKER_
+#else
+# define GTEST_AMBIGUOUS_ELSE_BLOCKER_ switch (0) case 0: default:  // NOLINT
+#endif
+
+// Use this annotation at the end of a struct/class definition to
+// prevent the compiler from optimizing away instances that are never
+// used.  This is useful when all interesting logic happens inside the
+// c'tor and / or d'tor.  Example:
+//
+//   struct Foo {
+//     Foo() { ... }
+//   } GTEST_ATTRIBUTE_UNUSED_;
+//
+// Also use it after a variable or parameter declaration to tell the
+// compiler the variable/parameter does not have to be used.
+#if defined(__GNUC__) && !defined(COMPILER_ICC)
+# define GTEST_ATTRIBUTE_UNUSED_ __attribute__ ((unused))
+#elif defined(__clang__)
+# if __has_attribute(unused)
+#  define GTEST_ATTRIBUTE_UNUSED_ __attribute__ ((unused))
+# endif
+#endif
+#ifndef GTEST_ATTRIBUTE_UNUSED_
+# define GTEST_ATTRIBUTE_UNUSED_
+#endif
+
+// Use this annotation before a function that takes a printf format string.
+#if (defined(__GNUC__) || defined(__clang__)) && !defined(COMPILER_ICC)
+# if defined(__MINGW_PRINTF_FORMAT)
+// MinGW has two different printf implementations. Ensure the format macro
+// matches the selected implementation. See
+// https://sourceforge.net/p/mingw-w64/wiki2/gnu%20printf/.
+#  define GTEST_ATTRIBUTE_PRINTF_(string_index, first_to_check) \
+       __attribute__((__format__(__MINGW_PRINTF_FORMAT, string_index, \
+                                 first_to_check)))
+# else
+#  define GTEST_ATTRIBUTE_PRINTF_(string_index, first_to_check) \
+       __attribute__((__format__(__printf__, string_index, first_to_check)))
+# endif
+#else
+# define GTEST_ATTRIBUTE_PRINTF_(string_index, first_to_check)
+#endif
+
+
+// A macro to disallow operator=
+// This should be used in the private: declarations for a class.
+#define GTEST_DISALLOW_ASSIGN_(type) \
+  void operator=(type const &) = delete
+
+// A macro to disallow copy constructor and operator=
+// This should be used in the private: declarations for a class.
+#define GTEST_DISALLOW_COPY_AND_ASSIGN_(type) \
+  type(type const &) = delete; \
+  GTEST_DISALLOW_ASSIGN_(type)
+
+// Tell the compiler to warn about unused return values for functions declared
+// with this macro.  The macro should be used on function declarations
+// following the argument list:
+//
+//   Sprocket* AllocateSprocket() GTEST_MUST_USE_RESULT_;
+#if defined(__GNUC__) && !defined(COMPILER_ICC)
+# define GTEST_MUST_USE_RESULT_ __attribute__ ((warn_unused_result))
+#else
+# define GTEST_MUST_USE_RESULT_
+#endif  // __GNUC__ && !COMPILER_ICC
+
+// MS C++ compiler emits warning when a conditional expression is compile time
+// constant. In some contexts this warning is false positive and needs to be
+// suppressed. Use the following two macros in such cases:
+//
+// GTEST_INTENTIONAL_CONST_COND_PUSH_()
+// while (true) {
+// GTEST_INTENTIONAL_CONST_COND_POP_()
+// }
+# define GTEST_INTENTIONAL_CONST_COND_PUSH_() \
+    GTEST_DISABLE_MSC_WARNINGS_PUSH_(4127)
+# define GTEST_INTENTIONAL_CONST_COND_POP_() \
+    GTEST_DISABLE_MSC_WARNINGS_POP_()
+
+// Determine whether the compiler supports Microsoft's Structured Exception
+// Handling.  This is supported by several Windows compilers but generally
+// does not exist on any other system.
+#ifndef GTEST_HAS_SEH
+// The user didn't tell us, so we need to figure it out.
+
+# if defined(_MSC_VER) || defined(__BORLANDC__)
+// These two compilers are known to support SEH.
+#  define GTEST_HAS_SEH 1
+# else
+// Assume no SEH.
+#  define GTEST_HAS_SEH 0
+# endif
+
+#endif  // GTEST_HAS_SEH
+
+#ifndef GTEST_IS_THREADSAFE
+
+#define GTEST_IS_THREADSAFE                                                 \
+  (GTEST_HAS_MUTEX_AND_THREAD_LOCAL_ ||                                     \
+   (GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT) || \
+   GTEST_HAS_PTHREAD)
+
+#endif  // GTEST_IS_THREADSAFE
+
+// GTEST_API_ qualifies all symbols that must be exported. The definitions below
+// are guarded by #ifndef to give embedders a chance to define GTEST_API_ in
+// gtest/internal/custom/gtest-port.h
+#ifndef GTEST_API_
+
+#ifdef _MSC_VER
+# if GTEST_LINKED_AS_SHARED_LIBRARY
+#  define GTEST_API_ __declspec(dllimport)
+# elif GTEST_CREATE_SHARED_LIBRARY
+#  define GTEST_API_ __declspec(dllexport)
+# endif
+#elif __GNUC__ >= 4 || defined(__clang__)
+# define GTEST_API_ __attribute__((visibility ("default")))
+#endif  // _MSC_VER
+
+#endif  // GTEST_API_
+
+#ifndef GTEST_API_
+# define GTEST_API_
+#endif  // GTEST_API_
+
+#ifndef GTEST_DEFAULT_DEATH_TEST_STYLE
+# define GTEST_DEFAULT_DEATH_TEST_STYLE  "fast"
+#endif  // GTEST_DEFAULT_DEATH_TEST_STYLE
+
+#ifdef __GNUC__
+// Ask the compiler to never inline a given function.
+# define GTEST_NO_INLINE_ __attribute__((noinline))
+#else
+# define GTEST_NO_INLINE_
+#endif
+
+// _LIBCPP_VERSION is defined by the libc++ library from the LLVM project.
+#if !defined(GTEST_HAS_CXXABI_H_)
+# if defined(__GLIBCXX__) || (defined(_LIBCPP_VERSION) && !defined(_MSC_VER))
+#  define GTEST_HAS_CXXABI_H_ 1
+# else
+#  define GTEST_HAS_CXXABI_H_ 0
+# endif
+#endif
+
+// A function level attribute to disable checking for use of uninitialized
+// memory when built with MemorySanitizer.
+#if defined(__clang__)
+# if __has_feature(memory_sanitizer)
+#  define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ \
+       __attribute__((no_sanitize_memory))
+# else
+#  define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_
+# endif  // __has_feature(memory_sanitizer)
+#else
+# define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_
+#endif  // __clang__
+
+// A function level attribute to disable AddressSanitizer instrumentation.
+#if defined(__clang__)
+# if __has_feature(address_sanitizer)
+#  define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_ \
+       __attribute__((no_sanitize_address))
+# else
+#  define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
+# endif  // __has_feature(address_sanitizer)
+#else
+# define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
+#endif  // __clang__
+
+// A function level attribute to disable HWAddressSanitizer instrumentation.
+#if defined(__clang__)
+# if __has_feature(hwaddress_sanitizer)
+#  define GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_ \
+       __attribute__((no_sanitize("hwaddress")))
+# else
+#  define GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
+# endif  // __has_feature(hwaddress_sanitizer)
+#else
+# define GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
+#endif  // __clang__
+
+// A function level attribute to disable ThreadSanitizer instrumentation.
+#if defined(__clang__)
+# if __has_feature(thread_sanitizer)
+#  define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_ \
+       __attribute__((no_sanitize_thread))
+# else
+#  define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_
+# endif  // __has_feature(thread_sanitizer)
+#else
+# define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_
+#endif  // __clang__
+
+namespace testing {
+
+class Message;
+
+// Legacy imports for backwards compatibility.
+// New code should use std:: names directly.
+using std::get;
+using std::make_tuple;
+using std::tuple;
+using std::tuple_element;
+using std::tuple_size;
+
+namespace internal {
+
+// A secret type that Google Test users don't know about.  It has no
+// definition on purpose.  Therefore it's impossible to create a
+// Secret object, which is what we want.
+class Secret;
+
+// The GTEST_COMPILE_ASSERT_ is a legacy macro used to verify that a compile
+// time expression is true (in new code, use static_assert instead). For
+// example, you could use it to verify the size of a static array:
+//
+//   GTEST_COMPILE_ASSERT_(GTEST_ARRAY_SIZE_(names) == NUM_NAMES,
+//                         names_incorrect_size);
+//
+// The second argument to the macro must be a valid C++ identifier. If the
+// expression is false, compiler will issue an error containing this identifier.
+#define GTEST_COMPILE_ASSERT_(expr, msg) static_assert(expr, #msg)
+
+// Evaluates to the number of elements in 'array'.
+#define GTEST_ARRAY_SIZE_(array) (sizeof(array) / sizeof(array[0]))
+
+// A helper for suppressing warnings on constant condition.  It just
+// returns 'condition'.
+GTEST_API_ bool IsTrue(bool condition);
+
+// Defines RE.
+
+#if GTEST_USES_PCRE
+// if used, PCRE is injected by custom/gtest-port.h
+#elif GTEST_USES_POSIX_RE || GTEST_USES_SIMPLE_RE
+
+// A simple C++ wrapper for <regex.h>.  It uses the POSIX Extended
+// Regular Expression syntax.
+class GTEST_API_ RE {
+ public:
+  // A copy constructor is required by the Standard to initialize object
+  // references from r-values.
+  RE(const RE& other) { Init(other.pattern()); }
+
+  // Constructs an RE from a string.
+  RE(const ::std::string& regex) { Init(regex.c_str()); }  // NOLINT
+
+  RE(const char* regex) { Init(regex); }  // NOLINT
+  ~RE();
+
+  // Returns the string representation of the regex.
+  const char* pattern() const { return pattern_; }
+
+  // FullMatch(str, re) returns true if and only if regular expression re
+  // matches the entire str.
+  // PartialMatch(str, re) returns true if and only if regular expression re
+  // matches a substring of str (including str itself).
+  static bool FullMatch(const ::std::string& str, const RE& re) {
+    return FullMatch(str.c_str(), re);
+  }
+  static bool PartialMatch(const ::std::string& str, const RE& re) {
+    return PartialMatch(str.c_str(), re);
+  }
+
+  static bool FullMatch(const char* str, const RE& re);
+  static bool PartialMatch(const char* str, const RE& re);
+
+ private:
+  void Init(const char* regex);
+  const char* pattern_;
+  bool is_valid_;
+
+# if GTEST_USES_POSIX_RE
+
+  regex_t full_regex_;     // For FullMatch().
+  regex_t partial_regex_;  // For PartialMatch().
+
+# else  // GTEST_USES_SIMPLE_RE
+
+  const char* full_pattern_;  // For FullMatch();
+
+# endif
+
+  GTEST_DISALLOW_ASSIGN_(RE);
+};
+
+#endif  // GTEST_USES_PCRE
+
+// Formats a source file path and a line number as they would appear
+// in an error message from the compiler used to compile this code.
+GTEST_API_ ::std::string FormatFileLocation(const char* file, int line);
+
+// Formats a file location for compiler-independent XML output.
+// Although this function is not platform dependent, we put it next to
+// FormatFileLocation in order to contrast the two functions.
+GTEST_API_ ::std::string FormatCompilerIndependentFileLocation(const char* file,
+                                                               int line);
+
+// Defines logging utilities:
+//   GTEST_LOG_(severity) - logs messages at the specified severity level. The
+//                          message itself is streamed into the macro.
+//   LogToStderr()  - directs all log messages to stderr.
+//   FlushInfoLog() - flushes informational log messages.
+
+enum GTestLogSeverity {
+  GTEST_INFO,
+  GTEST_WARNING,
+  GTEST_ERROR,
+  GTEST_FATAL
+};
+
+// Formats log entry severity, provides a stream object for streaming the
+// log message, and terminates the message with a newline when going out of
+// scope.
+class GTEST_API_ GTestLog {
+ public:
+  GTestLog(GTestLogSeverity severity, const char* file, int line);
+
+  // Flushes the buffers and, if severity is GTEST_FATAL, aborts the program.
+  ~GTestLog();
+
+  ::std::ostream& GetStream() { return ::std::cerr; }
+
+ private:
+  const GTestLogSeverity severity_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestLog);
+};
+
+#if !defined(GTEST_LOG_)
+
+# define GTEST_LOG_(severity) \
+    ::testing::internal::GTestLog(::testing::internal::GTEST_##severity, \
+                                  __FILE__, __LINE__).GetStream()
+
+inline void LogToStderr() {}
+inline void FlushInfoLog() { fflush(nullptr); }
+
+#endif  // !defined(GTEST_LOG_)
+
+#if !defined(GTEST_CHECK_)
+// INTERNAL IMPLEMENTATION - DO NOT USE.
+//
+// GTEST_CHECK_ is an all-mode assert. It aborts the program if the condition
+// is not satisfied.
+//  Synopsys:
+//    GTEST_CHECK_(boolean_condition);
+//     or
+//    GTEST_CHECK_(boolean_condition) << "Additional message";
+//
+//    This checks the condition and if the condition is not satisfied
+//    it prints message about the condition violation, including the
+//    condition itself, plus additional message streamed into it, if any,
+//    and then it aborts the program. It aborts the program irrespective of
+//    whether it is built in the debug mode or not.
+# define GTEST_CHECK_(condition) \
+    GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
+    if (::testing::internal::IsTrue(condition)) \
+      ; \
+    else \
+      GTEST_LOG_(FATAL) << "Condition " #condition " failed. "
+#endif  // !defined(GTEST_CHECK_)
+
+// An all-mode assert to verify that the given POSIX-style function
+// call returns 0 (indicating success).  Known limitation: this
+// doesn't expand to a balanced 'if' statement, so enclose the macro
+// in {} if you need to use it as the only statement in an 'if'
+// branch.
+#define GTEST_CHECK_POSIX_SUCCESS_(posix_call) \
+  if (const int gtest_error = (posix_call)) \
+    GTEST_LOG_(FATAL) << #posix_call << "failed with error " \
+                      << gtest_error
+
+// Transforms "T" into "const T&" according to standard reference collapsing
+// rules (this is only needed as a backport for C++98 compilers that do not
+// support reference collapsing). Specifically, it transforms:
+//
+//   char         ==> const char&
+//   const char   ==> const char&
+//   char&        ==> char&
+//   const char&  ==> const char&
+//
+// Note that the non-const reference will not have "const" added. This is
+// standard, and necessary so that "T" can always bind to "const T&".
+template <typename T>
+struct ConstRef { typedef const T& type; };
+template <typename T>
+struct ConstRef<T&> { typedef T& type; };
+
+// The argument T must depend on some template parameters.
+#define GTEST_REFERENCE_TO_CONST_(T) \
+  typename ::testing::internal::ConstRef<T>::type
+
+// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
+//
+// Use ImplicitCast_ as a safe version of static_cast for upcasting in
+// the type hierarchy (e.g. casting a Foo* to a SuperclassOfFoo* or a
+// const Foo*).  When you use ImplicitCast_, the compiler checks that
+// the cast is safe.  Such explicit ImplicitCast_s are necessary in
+// surprisingly many situations where C++ demands an exact type match
+// instead of an argument type convertable to a target type.
+//
+// The syntax for using ImplicitCast_ is the same as for static_cast:
+//
+//   ImplicitCast_<ToType>(expr)
+//
+// ImplicitCast_ would have been part of the C++ standard library,
+// but the proposal was submitted too late.  It will probably make
+// its way into the language in the future.
+//
+// This relatively ugly name is intentional. It prevents clashes with
+// similar functions users may have (e.g., implicit_cast). The internal
+// namespace alone is not enough because the function can be found by ADL.
+template<typename To>
+inline To ImplicitCast_(To x) { return x; }
+
+// When you upcast (that is, cast a pointer from type Foo to type
+// SuperclassOfFoo), it's fine to use ImplicitCast_<>, since upcasts
+// always succeed.  When you downcast (that is, cast a pointer from
+// type Foo to type SubclassOfFoo), static_cast<> isn't safe, because
+// how do you know the pointer is really of type SubclassOfFoo?  It
+// could be a bare Foo, or of type DifferentSubclassOfFoo.  Thus,
+// when you downcast, you should use this macro.  In debug mode, we
+// use dynamic_cast<> to double-check the downcast is legal (we die
+// if it's not).  In normal mode, we do the efficient static_cast<>
+// instead.  Thus, it's important to test in debug mode to make sure
+// the cast is legal!
+//    This is the only place in the code we should use dynamic_cast<>.
+// In particular, you SHOULDN'T be using dynamic_cast<> in order to
+// do RTTI (eg code like this:
+//    if (dynamic_cast<Subclass1>(foo)) HandleASubclass1Object(foo);
+//    if (dynamic_cast<Subclass2>(foo)) HandleASubclass2Object(foo);
+// You should design the code some other way not to need this.
+//
+// This relatively ugly name is intentional. It prevents clashes with
+// similar functions users may have (e.g., down_cast). The internal
+// namespace alone is not enough because the function can be found by ADL.
+template<typename To, typename From>  // use like this: DownCast_<T*>(foo);
+inline To DownCast_(From* f) {  // so we only accept pointers
+  // Ensures that To is a sub-type of From *.  This test is here only
+  // for compile-time type checking, and has no overhead in an
+  // optimized build at run-time, as it will be optimized away
+  // completely.
+  GTEST_INTENTIONAL_CONST_COND_PUSH_()
+  if (false) {
+  GTEST_INTENTIONAL_CONST_COND_POP_()
+  const To to = nullptr;
+  ::testing::internal::ImplicitCast_<From*>(to);
+  }
+
+#if GTEST_HAS_RTTI
+  // RTTI: debug mode only!
+  GTEST_CHECK_(f == nullptr || dynamic_cast<To>(f) != nullptr);
+#endif
+  return static_cast<To>(f);
+}
+
+// Downcasts the pointer of type Base to Derived.
+// Derived must be a subclass of Base. The parameter MUST
+// point to a class of type Derived, not any subclass of it.
+// When RTTI is available, the function performs a runtime
+// check to enforce this.
+template <class Derived, class Base>
+Derived* CheckedDowncastToActualType(Base* base) {
+#if GTEST_HAS_RTTI
+  GTEST_CHECK_(typeid(*base) == typeid(Derived));
+#endif
+
+#if GTEST_HAS_DOWNCAST_
+  return ::down_cast<Derived*>(base);
+#elif GTEST_HAS_RTTI
+  return dynamic_cast<Derived*>(base);  // NOLINT
+#else
+  return static_cast<Derived*>(base);  // Poor man's downcast.
+#endif
+}
+
+#if GTEST_HAS_STREAM_REDIRECTION
+
+// Defines the stderr capturer:
+//   CaptureStdout     - starts capturing stdout.
+//   GetCapturedStdout - stops capturing stdout and returns the captured string.
+//   CaptureStderr     - starts capturing stderr.
+//   GetCapturedStderr - stops capturing stderr and returns the captured string.
+//
+GTEST_API_ void CaptureStdout();
+GTEST_API_ std::string GetCapturedStdout();
+GTEST_API_ void CaptureStderr();
+GTEST_API_ std::string GetCapturedStderr();
+
+#endif  // GTEST_HAS_STREAM_REDIRECTION
+// Returns the size (in bytes) of a file.
+GTEST_API_ size_t GetFileSize(FILE* file);
+
+// Reads the entire content of a file as a string.
+GTEST_API_ std::string ReadEntireFile(FILE* file);
+
+// All command line arguments.
+GTEST_API_ std::vector<std::string> GetArgvs();
+
+#if GTEST_HAS_DEATH_TEST
+
+std::vector<std::string> GetInjectableArgvs();
+// Deprecated: pass the args vector by value instead.
+void SetInjectableArgvs(const std::vector<std::string>* new_argvs);
+void SetInjectableArgvs(const std::vector<std::string>& new_argvs);
+void ClearInjectableArgvs();
+
+#endif  // GTEST_HAS_DEATH_TEST
+
+// Defines synchronization primitives.
+#if GTEST_IS_THREADSAFE
+# if GTEST_HAS_PTHREAD
+// Sleeps for (roughly) n milliseconds.  This function is only for testing
+// Google Test's own constructs.  Don't use it in user tests, either
+// directly or indirectly.
+inline void SleepMilliseconds(int n) {
+  const timespec time = {
+    0,                  // 0 seconds.
+    n * 1000L * 1000L,  // And n ms.
+  };
+  nanosleep(&time, nullptr);
+}
+# endif  // GTEST_HAS_PTHREAD
+
+# if GTEST_HAS_NOTIFICATION_
+// Notification has already been imported into the namespace.
+// Nothing to do here.
+
+# elif GTEST_HAS_PTHREAD
+// Allows a controller thread to pause execution of newly created
+// threads until notified.  Instances of this class must be created
+// and destroyed in the controller thread.
+//
+// This class is only for testing Google Test's own constructs. Do not
+// use it in user tests, either directly or indirectly.
+class Notification {
+ public:
+  Notification() : notified_(false) {
+    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, nullptr));
+  }
+  ~Notification() {
+    pthread_mutex_destroy(&mutex_);
+  }
+
+  // Notifies all threads created with this notification to start. Must
+  // be called from the controller thread.
+  void Notify() {
+    pthread_mutex_lock(&mutex_);
+    notified_ = true;
+    pthread_mutex_unlock(&mutex_);
+  }
+
+  // Blocks until the controller thread notifies. Must be called from a test
+  // thread.
+  void WaitForNotification() {
+    for (;;) {
+      pthread_mutex_lock(&mutex_);
+      const bool notified = notified_;
+      pthread_mutex_unlock(&mutex_);
+      if (notified)
+        break;
+      SleepMilliseconds(10);
+    }
+  }
+
+ private:
+  pthread_mutex_t mutex_;
+  bool notified_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(Notification);
+};
+
+# elif GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT
+
+GTEST_API_ void SleepMilliseconds(int n);
+
+// Provides leak-safe Windows kernel handle ownership.
+// Used in death tests and in threading support.
+class GTEST_API_ AutoHandle {
+ public:
+  // Assume that Win32 HANDLE type is equivalent to void*. Doing so allows us to
+  // avoid including <windows.h> in this header file. Including <windows.h> is
+  // undesirable because it defines a lot of symbols and macros that tend to
+  // conflict with client code. This assumption is verified by
+  // WindowsTypesTest.HANDLEIsVoidStar.
+  typedef void* Handle;
+  AutoHandle();
+  explicit AutoHandle(Handle handle);
+
+  ~AutoHandle();
+
+  Handle Get() const;
+  void Reset();
+  void Reset(Handle handle);
+
+ private:
+  // Returns true if and only if the handle is a valid handle object that can be
+  // closed.
+  bool IsCloseable() const;
+
+  Handle handle_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(AutoHandle);
+};
+
+// Allows a controller thread to pause execution of newly created
+// threads until notified.  Instances of this class must be created
+// and destroyed in the controller thread.
+//
+// This class is only for testing Google Test's own constructs. Do not
+// use it in user tests, either directly or indirectly.
+class GTEST_API_ Notification {
+ public:
+  Notification();
+  void Notify();
+  void WaitForNotification();
+
+ private:
+  AutoHandle event_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(Notification);
+};
+# endif  // GTEST_HAS_NOTIFICATION_
+
+// On MinGW, we can have both GTEST_OS_WINDOWS and GTEST_HAS_PTHREAD
+// defined, but we don't want to use MinGW's pthreads implementation, which
+// has conformance problems with some versions of the POSIX standard.
+# if GTEST_HAS_PTHREAD && !GTEST_OS_WINDOWS_MINGW
+
+// As a C-function, ThreadFuncWithCLinkage cannot be templated itself.
+// Consequently, it cannot select a correct instantiation of ThreadWithParam
+// in order to call its Run(). Introducing ThreadWithParamBase as a
+// non-templated base class for ThreadWithParam allows us to bypass this
+// problem.
+class ThreadWithParamBase {
+ public:
+  virtual ~ThreadWithParamBase() {}
+  virtual void Run() = 0;
+};
+
+// pthread_create() accepts a pointer to a function type with the C linkage.
+// According to the Standard (7.5/1), function types with different linkages
+// are different even if they are otherwise identical.  Some compilers (for
+// example, SunStudio) treat them as different types.  Since class methods
+// cannot be defined with C-linkage we need to define a free C-function to
+// pass into pthread_create().
+extern "C" inline void* ThreadFuncWithCLinkage(void* thread) {
+  static_cast<ThreadWithParamBase*>(thread)->Run();
+  return nullptr;
+}
+
+// Helper class for testing Google Test's multi-threading constructs.
+// To use it, write:
+//
+//   void ThreadFunc(int param) { /* Do things with param */ }
+//   Notification thread_can_start;
+//   ...
+//   // The thread_can_start parameter is optional; you can supply NULL.
+//   ThreadWithParam<int> thread(&ThreadFunc, 5, &thread_can_start);
+//   thread_can_start.Notify();
+//
+// These classes are only for testing Google Test's own constructs. Do
+// not use them in user tests, either directly or indirectly.
+template <typename T>
+class ThreadWithParam : public ThreadWithParamBase {
+ public:
+  typedef void UserThreadFunc(T);
+
+  ThreadWithParam(UserThreadFunc* func, T param, Notification* thread_can_start)
+      : func_(func),
+        param_(param),
+        thread_can_start_(thread_can_start),
+        finished_(false) {
+    ThreadWithParamBase* const base = this;
+    // The thread can be created only after all fields except thread_
+    // have been initialized.
+    GTEST_CHECK_POSIX_SUCCESS_(
+        pthread_create(&thread_, nullptr, &ThreadFuncWithCLinkage, base));
+  }
+  ~ThreadWithParam() override { Join(); }
+
+  void Join() {
+    if (!finished_) {
+      GTEST_CHECK_POSIX_SUCCESS_(pthread_join(thread_, nullptr));
+      finished_ = true;
+    }
+  }
+
+  void Run() override {
+    if (thread_can_start_ != nullptr) thread_can_start_->WaitForNotification();
+    func_(param_);
+  }
+
+ private:
+  UserThreadFunc* const func_;  // User-supplied thread function.
+  const T param_;  // User-supplied parameter to the thread function.
+  // When non-NULL, used to block execution until the controller thread
+  // notifies.
+  Notification* const thread_can_start_;
+  bool finished_;  // true if and only if we know that the thread function has
+                   // finished.
+  pthread_t thread_;  // The native thread object.
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParam);
+};
+# endif  // !GTEST_OS_WINDOWS && GTEST_HAS_PTHREAD ||
+         // GTEST_HAS_MUTEX_AND_THREAD_LOCAL_
+
+# if GTEST_HAS_MUTEX_AND_THREAD_LOCAL_
+// Mutex and ThreadLocal have already been imported into the namespace.
+// Nothing to do here.
+
+# elif GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT
+
+// Mutex implements mutex on Windows platforms.  It is used in conjunction
+// with class MutexLock:
+//
+//   Mutex mutex;
+//   ...
+//   MutexLock lock(&mutex);  // Acquires the mutex and releases it at the
+//                            // end of the current scope.
+//
+// A static Mutex *must* be defined or declared using one of the following
+// macros:
+//   GTEST_DEFINE_STATIC_MUTEX_(g_some_mutex);
+//   GTEST_DECLARE_STATIC_MUTEX_(g_some_mutex);
+//
+// (A non-static Mutex is defined/declared in the usual way).
+class GTEST_API_ Mutex {
+ public:
+  enum MutexType { kStatic = 0, kDynamic = 1 };
+  // We rely on kStaticMutex being 0 as it is to what the linker initializes
+  // type_ in static mutexes.  critical_section_ will be initialized lazily
+  // in ThreadSafeLazyInit().
+  enum StaticConstructorSelector { kStaticMutex = 0 };
+
+  // This constructor intentionally does nothing.  It relies on type_ being
+  // statically initialized to 0 (effectively setting it to kStatic) and on
+  // ThreadSafeLazyInit() to lazily initialize the rest of the members.
+  explicit Mutex(StaticConstructorSelector /*dummy*/) {}
+
+  Mutex();
+  ~Mutex();
+
+  void Lock();
+
+  void Unlock();
+
+  // Does nothing if the current thread holds the mutex. Otherwise, crashes
+  // with high probability.
+  void AssertHeld();
+
+ private:
+  // Initializes owner_thread_id_ and critical_section_ in static mutexes.
+  void ThreadSafeLazyInit();
+
+  // Per https://blogs.msdn.microsoft.com/oldnewthing/20040223-00/?p=40503,
+  // we assume that 0 is an invalid value for thread IDs.
+  unsigned int owner_thread_id_;
+
+  // For static mutexes, we rely on these members being initialized to zeros
+  // by the linker.
+  MutexType type_;
+  long critical_section_init_phase_;  // NOLINT
+  GTEST_CRITICAL_SECTION* critical_section_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(Mutex);
+};
+
+# define GTEST_DECLARE_STATIC_MUTEX_(mutex) \
+    extern ::testing::internal::Mutex mutex
+
+# define GTEST_DEFINE_STATIC_MUTEX_(mutex) \
+    ::testing::internal::Mutex mutex(::testing::internal::Mutex::kStaticMutex)
+
+// We cannot name this class MutexLock because the ctor declaration would
+// conflict with a macro named MutexLock, which is defined on some
+// platforms. That macro is used as a defensive measure to prevent against
+// inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than
+// "MutexLock l(&mu)".  Hence the typedef trick below.
+class GTestMutexLock {
+ public:
+  explicit GTestMutexLock(Mutex* mutex)
+      : mutex_(mutex) { mutex_->Lock(); }
+
+  ~GTestMutexLock() { mutex_->Unlock(); }
+
+ private:
+  Mutex* const mutex_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestMutexLock);
+};
+
+typedef GTestMutexLock MutexLock;
+
+// Base class for ValueHolder<T>.  Allows a caller to hold and delete a value
+// without knowing its type.
+class ThreadLocalValueHolderBase {
+ public:
+  virtual ~ThreadLocalValueHolderBase() {}
+};
+
+// Provides a way for a thread to send notifications to a ThreadLocal
+// regardless of its parameter type.
+class ThreadLocalBase {
+ public:
+  // Creates a new ValueHolder<T> object holding a default value passed to
+  // this ThreadLocal<T>'s constructor and returns it.  It is the caller's
+  // responsibility not to call this when the ThreadLocal<T> instance already
+  // has a value on the current thread.
+  virtual ThreadLocalValueHolderBase* NewValueForCurrentThread() const = 0;
+
+ protected:
+  ThreadLocalBase() {}
+  virtual ~ThreadLocalBase() {}
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocalBase);
+};
+
+// Maps a thread to a set of ThreadLocals that have values instantiated on that
+// thread and notifies them when the thread exits.  A ThreadLocal instance is
+// expected to persist until all threads it has values on have terminated.
+class GTEST_API_ ThreadLocalRegistry {
+ public:
+  // Registers thread_local_instance as having value on the current thread.
+  // Returns a value that can be used to identify the thread from other threads.
+  static ThreadLocalValueHolderBase* GetValueOnCurrentThread(
+      const ThreadLocalBase* thread_local_instance);
+
+  // Invoked when a ThreadLocal instance is destroyed.
+  static void OnThreadLocalDestroyed(
+      const ThreadLocalBase* thread_local_instance);
+};
+
+class GTEST_API_ ThreadWithParamBase {
+ public:
+  void Join();
+
+ protected:
+  class Runnable {
+   public:
+    virtual ~Runnable() {}
+    virtual void Run() = 0;
+  };
+
+  ThreadWithParamBase(Runnable *runnable, Notification* thread_can_start);
+  virtual ~ThreadWithParamBase();
+
+ private:
+  AutoHandle thread_;
+};
+
+// Helper class for testing Google Test's multi-threading constructs.
+template <typename T>
+class ThreadWithParam : public ThreadWithParamBase {
+ public:
+  typedef void UserThreadFunc(T);
+
+  ThreadWithParam(UserThreadFunc* func, T param, Notification* thread_can_start)
+      : ThreadWithParamBase(new RunnableImpl(func, param), thread_can_start) {
+  }
+  virtual ~ThreadWithParam() {}
+
+ private:
+  class RunnableImpl : public Runnable {
+   public:
+    RunnableImpl(UserThreadFunc* func, T param)
+        : func_(func),
+          param_(param) {
+    }
+    virtual ~RunnableImpl() {}
+    virtual void Run() {
+      func_(param_);
+    }
+
+   private:
+    UserThreadFunc* const func_;
+    const T param_;
+
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(RunnableImpl);
+  };
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParam);
+};
+
+// Implements thread-local storage on Windows systems.
+//
+//   // Thread 1
+//   ThreadLocal<int> tl(100);  // 100 is the default value for each thread.
+//
+//   // Thread 2
+//   tl.set(150);  // Changes the value for thread 2 only.
+//   EXPECT_EQ(150, tl.get());
+//
+//   // Thread 1
+//   EXPECT_EQ(100, tl.get());  // In thread 1, tl has the original value.
+//   tl.set(200);
+//   EXPECT_EQ(200, tl.get());
+//
+// The template type argument T must have a public copy constructor.
+// In addition, the default ThreadLocal constructor requires T to have
+// a public default constructor.
+//
+// The users of a TheadLocal instance have to make sure that all but one
+// threads (including the main one) using that instance have exited before
+// destroying it. Otherwise, the per-thread objects managed for them by the
+// ThreadLocal instance are not guaranteed to be destroyed on all platforms.
+//
+// Google Test only uses global ThreadLocal objects.  That means they
+// will die after main() has returned.  Therefore, no per-thread
+// object managed by Google Test will be leaked as long as all threads
+// using Google Test have exited when main() returns.
+template <typename T>
+class ThreadLocal : public ThreadLocalBase {
+ public:
+  ThreadLocal() : default_factory_(new DefaultValueHolderFactory()) {}
+  explicit ThreadLocal(const T& value)
+      : default_factory_(new InstanceValueHolderFactory(value)) {}
+
+  ~ThreadLocal() { ThreadLocalRegistry::OnThreadLocalDestroyed(this); }
+
+  T* pointer() { return GetOrCreateValue(); }
+  const T* pointer() const { return GetOrCreateValue(); }
+  const T& get() const { return *pointer(); }
+  void set(const T& value) { *pointer() = value; }
+
+ private:
+  // Holds a value of T.  Can be deleted via its base class without the caller
+  // knowing the type of T.
+  class ValueHolder : public ThreadLocalValueHolderBase {
+   public:
+    ValueHolder() : value_() {}
+    explicit ValueHolder(const T& value) : value_(value) {}
+
+    T* pointer() { return &value_; }
+
+   private:
+    T value_;
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolder);
+  };
+
+
+  T* GetOrCreateValue() const {
+    return static_cast<ValueHolder*>(
+        ThreadLocalRegistry::GetValueOnCurrentThread(this))->pointer();
+  }
+
+  virtual ThreadLocalValueHolderBase* NewValueForCurrentThread() const {
+    return default_factory_->MakeNewHolder();
+  }
+
+  class ValueHolderFactory {
+   public:
+    ValueHolderFactory() {}
+    virtual ~ValueHolderFactory() {}
+    virtual ValueHolder* MakeNewHolder() const = 0;
+
+   private:
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolderFactory);
+  };
+
+  class DefaultValueHolderFactory : public ValueHolderFactory {
+   public:
+    DefaultValueHolderFactory() {}
+    virtual ValueHolder* MakeNewHolder() const { return new ValueHolder(); }
+
+   private:
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultValueHolderFactory);
+  };
+
+  class InstanceValueHolderFactory : public ValueHolderFactory {
+   public:
+    explicit InstanceValueHolderFactory(const T& value) : value_(value) {}
+    virtual ValueHolder* MakeNewHolder() const {
+      return new ValueHolder(value_);
+    }
+
+   private:
+    const T value_;  // The value for each thread.
+
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(InstanceValueHolderFactory);
+  };
+
+  std::unique_ptr<ValueHolderFactory> default_factory_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocal);
+};
+
+# elif GTEST_HAS_PTHREAD
+
+// MutexBase and Mutex implement mutex on pthreads-based platforms.
+class MutexBase {
+ public:
+  // Acquires this mutex.
+  void Lock() {
+    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_lock(&mutex_));
+    owner_ = pthread_self();
+    has_owner_ = true;
+  }
+
+  // Releases this mutex.
+  void Unlock() {
+    // Since the lock is being released the owner_ field should no longer be
+    // considered valid. We don't protect writing to has_owner_ here, as it's
+    // the caller's responsibility to ensure that the current thread holds the
+    // mutex when this is called.
+    has_owner_ = false;
+    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_unlock(&mutex_));
+  }
+
+  // Does nothing if the current thread holds the mutex. Otherwise, crashes
+  // with high probability.
+  void AssertHeld() const {
+    GTEST_CHECK_(has_owner_ && pthread_equal(owner_, pthread_self()))
+        << "The current thread is not holding the mutex @" << this;
+  }
+
+  // A static mutex may be used before main() is entered.  It may even
+  // be used before the dynamic initialization stage.  Therefore we
+  // must be able to initialize a static mutex object at link time.
+  // This means MutexBase has to be a POD and its member variables
+  // have to be public.
+ public:
+  pthread_mutex_t mutex_;  // The underlying pthread mutex.
+  // has_owner_ indicates whether the owner_ field below contains a valid thread
+  // ID and is therefore safe to inspect (e.g., to use in pthread_equal()). All
+  // accesses to the owner_ field should be protected by a check of this field.
+  // An alternative might be to memset() owner_ to all zeros, but there's no
+  // guarantee that a zero'd pthread_t is necessarily invalid or even different
+  // from pthread_self().
+  bool has_owner_;
+  pthread_t owner_;  // The thread holding the mutex.
+};
+
+// Forward-declares a static mutex.
+#  define GTEST_DECLARE_STATIC_MUTEX_(mutex) \
+     extern ::testing::internal::MutexBase mutex
+
+// Defines and statically (i.e. at link time) initializes a static mutex.
+// The initialization list here does not explicitly initialize each field,
+// instead relying on default initialization for the unspecified fields. In
+// particular, the owner_ field (a pthread_t) is not explicitly initialized.
+// This allows initialization to work whether pthread_t is a scalar or struct.
+// The flag -Wmissing-field-initializers must not be specified for this to work.
+#define GTEST_DEFINE_STATIC_MUTEX_(mutex) \
+  ::testing::internal::MutexBase mutex = {PTHREAD_MUTEX_INITIALIZER, false, 0}
+
+// The Mutex class can only be used for mutexes created at runtime. It
+// shares its API with MutexBase otherwise.
+class Mutex : public MutexBase {
+ public:
+  Mutex() {
+    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, nullptr));
+    has_owner_ = false;
+  }
+  ~Mutex() {
+    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_destroy(&mutex_));
+  }
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(Mutex);
+};
+
+// We cannot name this class MutexLock because the ctor declaration would
+// conflict with a macro named MutexLock, which is defined on some
+// platforms. That macro is used as a defensive measure to prevent against
+// inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than
+// "MutexLock l(&mu)".  Hence the typedef trick below.
+class GTestMutexLock {
+ public:
+  explicit GTestMutexLock(MutexBase* mutex)
+      : mutex_(mutex) { mutex_->Lock(); }
+
+  ~GTestMutexLock() { mutex_->Unlock(); }
+
+ private:
+  MutexBase* const mutex_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestMutexLock);
+};
+
+typedef GTestMutexLock MutexLock;
+
+// Helpers for ThreadLocal.
+
+// pthread_key_create() requires DeleteThreadLocalValue() to have
+// C-linkage.  Therefore it cannot be templatized to access
+// ThreadLocal<T>.  Hence the need for class
+// ThreadLocalValueHolderBase.
+class ThreadLocalValueHolderBase {
+ public:
+  virtual ~ThreadLocalValueHolderBase() {}
+};
+
+// Called by pthread to delete thread-local data stored by
+// pthread_setspecific().
+extern "C" inline void DeleteThreadLocalValue(void* value_holder) {
+  delete static_cast<ThreadLocalValueHolderBase*>(value_holder);
+}
+
+// Implements thread-local storage on pthreads-based systems.
+template <typename T>
+class GTEST_API_ ThreadLocal {
+ public:
+  ThreadLocal()
+      : key_(CreateKey()), default_factory_(new DefaultValueHolderFactory()) {}
+  explicit ThreadLocal(const T& value)
+      : key_(CreateKey()),
+        default_factory_(new InstanceValueHolderFactory(value)) {}
+
+  ~ThreadLocal() {
+    // Destroys the managed object for the current thread, if any.
+    DeleteThreadLocalValue(pthread_getspecific(key_));
+
+    // Releases resources associated with the key.  This will *not*
+    // delete managed objects for other threads.
+    GTEST_CHECK_POSIX_SUCCESS_(pthread_key_delete(key_));
+  }
+
+  T* pointer() { return GetOrCreateValue(); }
+  const T* pointer() const { return GetOrCreateValue(); }
+  const T& get() const { return *pointer(); }
+  void set(const T& value) { *pointer() = value; }
+
+ private:
+  // Holds a value of type T.
+  class ValueHolder : public ThreadLocalValueHolderBase {
+   public:
+    ValueHolder() : value_() {}
+    explicit ValueHolder(const T& value) : value_(value) {}
+
+    T* pointer() { return &value_; }
+
+   private:
+    T value_;
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolder);
+  };
+
+  static pthread_key_t CreateKey() {
+    pthread_key_t key;
+    // When a thread exits, DeleteThreadLocalValue() will be called on
+    // the object managed for that thread.
+    GTEST_CHECK_POSIX_SUCCESS_(
+        pthread_key_create(&key, &DeleteThreadLocalValue));
+    return key;
+  }
+
+  T* GetOrCreateValue() const {
+    ThreadLocalValueHolderBase* const holder =
+        static_cast<ThreadLocalValueHolderBase*>(pthread_getspecific(key_));
+    if (holder != nullptr) {
+      return CheckedDowncastToActualType<ValueHolder>(holder)->pointer();
+    }
+
+    ValueHolder* const new_holder = default_factory_->MakeNewHolder();
+    ThreadLocalValueHolderBase* const holder_base = new_holder;
+    GTEST_CHECK_POSIX_SUCCESS_(pthread_setspecific(key_, holder_base));
+    return new_holder->pointer();
+  }
+
+  class ValueHolderFactory {
+   public:
+    ValueHolderFactory() {}
+    virtual ~ValueHolderFactory() {}
+    virtual ValueHolder* MakeNewHolder() const = 0;
+
+   private:
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolderFactory);
+  };
+
+  class DefaultValueHolderFactory : public ValueHolderFactory {
+   public:
+    DefaultValueHolderFactory() {}
+    virtual ValueHolder* MakeNewHolder() const { return new ValueHolder(); }
+
+   private:
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultValueHolderFactory);
+  };
+
+  class InstanceValueHolderFactory : public ValueHolderFactory {
+   public:
+    explicit InstanceValueHolderFactory(const T& value) : value_(value) {}
+    virtual ValueHolder* MakeNewHolder() const {
+      return new ValueHolder(value_);
+    }
+
+   private:
+    const T value_;  // The value for each thread.
+
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(InstanceValueHolderFactory);
+  };
+
+  // A key pthreads uses for looking up per-thread values.
+  const pthread_key_t key_;
+  std::unique_ptr<ValueHolderFactory> default_factory_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocal);
+};
+
+# endif  // GTEST_HAS_MUTEX_AND_THREAD_LOCAL_
+
+#else  // GTEST_IS_THREADSAFE
+
+// A dummy implementation of synchronization primitives (mutex, lock,
+// and thread-local variable).  Necessary for compiling Google Test where
+// mutex is not supported - using Google Test in multiple threads is not
+// supported on such platforms.
+
+class Mutex {
+ public:
+  Mutex() {}
+  void Lock() {}
+  void Unlock() {}
+  void AssertHeld() const {}
+};
+
+# define GTEST_DECLARE_STATIC_MUTEX_(mutex) \
+  extern ::testing::internal::Mutex mutex
+
+# define GTEST_DEFINE_STATIC_MUTEX_(mutex) ::testing::internal::Mutex mutex
+
+// We cannot name this class MutexLock because the ctor declaration would
+// conflict with a macro named MutexLock, which is defined on some
+// platforms. That macro is used as a defensive measure to prevent against
+// inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than
+// "MutexLock l(&mu)".  Hence the typedef trick below.
+class GTestMutexLock {
+ public:
+  explicit GTestMutexLock(Mutex*) {}  // NOLINT
+};
+
+typedef GTestMutexLock MutexLock;
+
+template <typename T>
+class GTEST_API_ ThreadLocal {
+ public:
+  ThreadLocal() : value_() {}
+  explicit ThreadLocal(const T& value) : value_(value) {}
+  T* pointer() { return &value_; }
+  const T* pointer() const { return &value_; }
+  const T& get() const { return value_; }
+  void set(const T& value) { value_ = value; }
+ private:
+  T value_;
+};
+
+#endif  // GTEST_IS_THREADSAFE
+
+// Returns the number of threads running in the process, or 0 to indicate that
+// we cannot detect it.
+GTEST_API_ size_t GetThreadCount();
+
+template <bool B>
+using bool_constant = std::integral_constant<bool, B>;
+
+#if GTEST_OS_WINDOWS
+# define GTEST_PATH_SEP_ "\\"
+# define GTEST_HAS_ALT_PATH_SEP_ 1
+// The biggest signed integer type the compiler supports.
+typedef __int64 BiggestInt;
+#else
+# define GTEST_PATH_SEP_ "/"
+# define GTEST_HAS_ALT_PATH_SEP_ 0
+typedef long long BiggestInt;  // NOLINT
+#endif  // GTEST_OS_WINDOWS
+
+// Utilities for char.
+
+// isspace(int ch) and friends accept an unsigned char or EOF.  char
+// may be signed, depending on the compiler (or compiler flags).
+// Therefore we need to cast a char to unsigned char before calling
+// isspace(), etc.
+
+inline bool IsAlpha(char ch) {
+  return isalpha(static_cast<unsigned char>(ch)) != 0;
+}
+inline bool IsAlNum(char ch) {
+  return isalnum(static_cast<unsigned char>(ch)) != 0;
+}
+inline bool IsDigit(char ch) {
+  return isdigit(static_cast<unsigned char>(ch)) != 0;
+}
+inline bool IsLower(char ch) {
+  return islower(static_cast<unsigned char>(ch)) != 0;
+}
+inline bool IsSpace(char ch) {
+  return isspace(static_cast<unsigned char>(ch)) != 0;
+}
+inline bool IsUpper(char ch) {
+  return isupper(static_cast<unsigned char>(ch)) != 0;
+}
+inline bool IsXDigit(char ch) {
+  return isxdigit(static_cast<unsigned char>(ch)) != 0;
+}
+inline bool IsXDigit(wchar_t ch) {
+  const unsigned char low_byte = static_cast<unsigned char>(ch);
+  return ch == low_byte && isxdigit(low_byte) != 0;
+}
+
+inline char ToLower(char ch) {
+  return static_cast<char>(tolower(static_cast<unsigned char>(ch)));
+}
+inline char ToUpper(char ch) {
+  return static_cast<char>(toupper(static_cast<unsigned char>(ch)));
+}
+
+inline std::string StripTrailingSpaces(std::string str) {
+  std::string::iterator it = str.end();
+  while (it != str.begin() && IsSpace(*--it))
+    it = str.erase(it);
+  return str;
+}
+
+// The testing::internal::posix namespace holds wrappers for common
+// POSIX functions.  These wrappers hide the differences between
+// Windows/MSVC and POSIX systems.  Since some compilers define these
+// standard functions as macros, the wrapper cannot have the same name
+// as the wrapped function.
+
+namespace posix {
+
+// Functions with a different name on Windows.
+
+#if GTEST_OS_WINDOWS
+
+typedef struct _stat StatStruct;
+
+# ifdef __BORLANDC__
+inline int IsATTY(int fd) { return isatty(fd); }
+inline int StrCaseCmp(const char* s1, const char* s2) {
+  return stricmp(s1, s2);
+}
+inline char* StrDup(const char* src) { return strdup(src); }
+# else  // !__BORLANDC__
+#  if GTEST_OS_WINDOWS_MOBILE
+inline int IsATTY(int /* fd */) { return 0; }
+#  else
+inline int IsATTY(int fd) { return _isatty(fd); }
+#  endif  // GTEST_OS_WINDOWS_MOBILE
+inline int StrCaseCmp(const char* s1, const char* s2) {
+  return _stricmp(s1, s2);
+}
+inline char* StrDup(const char* src) { return _strdup(src); }
+# endif  // __BORLANDC__
+
+# if GTEST_OS_WINDOWS_MOBILE
+inline int FileNo(FILE* file) { return reinterpret_cast<int>(_fileno(file)); }
+// Stat(), RmDir(), and IsDir() are not needed on Windows CE at this
+// time and thus not defined there.
+# else
+inline int FileNo(FILE* file) { return _fileno(file); }
+inline int Stat(const char* path, StatStruct* buf) { return _stat(path, buf); }
+inline int RmDir(const char* dir) { return _rmdir(dir); }
+inline bool IsDir(const StatStruct& st) {
+  return (_S_IFDIR & st.st_mode) != 0;
+}
+# endif  // GTEST_OS_WINDOWS_MOBILE
+
+#else
+
+typedef struct stat StatStruct;
+
+inline int FileNo(FILE* file) { return fileno(file); }
+inline int IsATTY(int fd) { return isatty(fd); }
+inline int Stat(const char* path, StatStruct* buf) { return stat(path, buf); }
+inline int StrCaseCmp(const char* s1, const char* s2) {
+  return strcasecmp(s1, s2);
+}
+inline char* StrDup(const char* src) { return strdup(src); }
+inline int RmDir(const char* dir) { return rmdir(dir); }
+inline bool IsDir(const StatStruct& st) { return S_ISDIR(st.st_mode); }
+
+#endif  // GTEST_OS_WINDOWS
+
+// Functions deprecated by MSVC 8.0.
+
+GTEST_DISABLE_MSC_DEPRECATED_PUSH_()
+
+inline const char* StrNCpy(char* dest, const char* src, size_t n) {
+  return strncpy(dest, src, n);
+}
+
+// ChDir(), FReopen(), FDOpen(), Read(), Write(), Close(), and
+// StrError() aren't needed on Windows CE at this time and thus not
+// defined there.
+
+#if !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT
+inline int ChDir(const char* dir) { return chdir(dir); }
+#endif
+inline FILE* FOpen(const char* path, const char* mode) {
+  return fopen(path, mode);
+}
+#if !GTEST_OS_WINDOWS_MOBILE
+inline FILE *FReopen(const char* path, const char* mode, FILE* stream) {
+  return freopen(path, mode, stream);
+}
+inline FILE* FDOpen(int fd, const char* mode) { return fdopen(fd, mode); }
+#endif
+inline int FClose(FILE* fp) { return fclose(fp); }
+#if !GTEST_OS_WINDOWS_MOBILE
+inline int Read(int fd, void* buf, unsigned int count) {
+  return static_cast<int>(read(fd, buf, count));
+}
+inline int Write(int fd, const void* buf, unsigned int count) {
+  return static_cast<int>(write(fd, buf, count));
+}
+inline int Close(int fd) { return close(fd); }
+inline const char* StrError(int errnum) { return strerror(errnum); }
+#endif
+inline const char* GetEnv(const char* name) {
+#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT
+  // We are on Windows CE, which has no environment variables.
+  static_cast<void>(name);  // To prevent 'unused argument' warning.
+  return nullptr;
+#elif defined(__BORLANDC__) || defined(__SunOS_5_8) || defined(__SunOS_5_9)
+  // Environment variables which we programmatically clear will be set to the
+  // empty string rather than unset (NULL).  Handle that case.
+  const char* const env = getenv(name);
+  return (env != nullptr && env[0] != '\0') ? env : nullptr;
+#else
+  return getenv(name);
+#endif
+}
+
+GTEST_DISABLE_MSC_DEPRECATED_POP_()
+
+#if GTEST_OS_WINDOWS_MOBILE
+// Windows CE has no C library. The abort() function is used in
+// several places in Google Test. This implementation provides a reasonable
+// imitation of standard behaviour.
+[[noreturn]] void Abort();
+#else
+[[noreturn]] inline void Abort() { abort(); }
+#endif  // GTEST_OS_WINDOWS_MOBILE
+
+}  // namespace posix
+
+// MSVC "deprecates" snprintf and issues warnings wherever it is used.  In
+// order to avoid these warnings, we need to use _snprintf or _snprintf_s on
+// MSVC-based platforms.  We map the GTEST_SNPRINTF_ macro to the appropriate
+// function in order to achieve that.  We use macro definition here because
+// snprintf is a variadic function.
+#if _MSC_VER && !GTEST_OS_WINDOWS_MOBILE
+// MSVC 2005 and above support variadic macros.
+# define GTEST_SNPRINTF_(buffer, size, format, ...) \
+     _snprintf_s(buffer, size, size, format, __VA_ARGS__)
+#elif defined(_MSC_VER)
+// Windows CE does not define _snprintf_s
+# define GTEST_SNPRINTF_ _snprintf
+#else
+# define GTEST_SNPRINTF_ snprintf
+#endif
+
+// The maximum number a BiggestInt can represent.  This definition
+// works no matter BiggestInt is represented in one's complement or
+// two's complement.
+//
+// We cannot rely on numeric_limits in STL, as __int64 and long long
+// are not part of standard C++ and numeric_limits doesn't need to be
+// defined for them.
+const BiggestInt kMaxBiggestInt =
+    ~(static_cast<BiggestInt>(1) << (8*sizeof(BiggestInt) - 1));
+
+// This template class serves as a compile-time function from size to
+// type.  It maps a size in bytes to a primitive type with that
+// size. e.g.
+//
+//   TypeWithSize<4>::UInt
+//
+// is typedef-ed to be unsigned int (unsigned integer made up of 4
+// bytes).
+//
+// Such functionality should belong to STL, but I cannot find it
+// there.
+//
+// Google Test uses this class in the implementation of floating-point
+// comparison.
+//
+// For now it only handles UInt (unsigned int) as that's all Google Test
+// needs.  Other types can be easily added in the future if need
+// arises.
+template <size_t size>
+class TypeWithSize {
+ public:
+  // This prevents the user from using TypeWithSize<N> with incorrect
+  // values of N.
+  typedef void UInt;
+};
+
+// The specialization for size 4.
+template <>
+class TypeWithSize<4> {
+ public:
+  // unsigned int has size 4 in both gcc and MSVC.
+  //
+  // As base/basictypes.h doesn't compile on Windows, we cannot use
+  // uint32, uint64, and etc here.
+  typedef int Int;
+  typedef unsigned int UInt;
+};
+
+// The specialization for size 8.
+template <>
+class TypeWithSize<8> {
+ public:
+#if GTEST_OS_WINDOWS
+  typedef __int64 Int;
+  typedef unsigned __int64 UInt;
+#else
+  typedef long long Int;  // NOLINT
+  typedef unsigned long long UInt;  // NOLINT
+#endif  // GTEST_OS_WINDOWS
+};
+
+// Integer types of known sizes.
+typedef TypeWithSize<4>::Int Int32;
+typedef TypeWithSize<4>::UInt UInt32;
+typedef TypeWithSize<8>::Int Int64;
+typedef TypeWithSize<8>::UInt UInt64;
+typedef TypeWithSize<8>::Int TimeInMillis;  // Represents time in milliseconds.
+
+// Utilities for command line flags and environment variables.
+
+// Macro for referencing flags.
+#if !defined(GTEST_FLAG)
+# define GTEST_FLAG(name) FLAGS_gtest_##name
+#endif  // !defined(GTEST_FLAG)
+
+#if !defined(GTEST_USE_OWN_FLAGFILE_FLAG_)
+# define GTEST_USE_OWN_FLAGFILE_FLAG_ 1
+#endif  // !defined(GTEST_USE_OWN_FLAGFILE_FLAG_)
+
+#if !defined(GTEST_DECLARE_bool_)
+# define GTEST_FLAG_SAVER_ ::testing::internal::GTestFlagSaver
+
+// Macros for declaring flags.
+# define GTEST_DECLARE_bool_(name) GTEST_API_ extern bool GTEST_FLAG(name)
+# define GTEST_DECLARE_int32_(name) \
+    GTEST_API_ extern ::testing::internal::Int32 GTEST_FLAG(name)
+# define GTEST_DECLARE_string_(name) \
+    GTEST_API_ extern ::std::string GTEST_FLAG(name)
+
+// Macros for defining flags.
+# define GTEST_DEFINE_bool_(name, default_val, doc) \
+    GTEST_API_ bool GTEST_FLAG(name) = (default_val)
+# define GTEST_DEFINE_int32_(name, default_val, doc) \
+    GTEST_API_ ::testing::internal::Int32 GTEST_FLAG(name) = (default_val)
+# define GTEST_DEFINE_string_(name, default_val, doc) \
+    GTEST_API_ ::std::string GTEST_FLAG(name) = (default_val)
+
+#endif  // !defined(GTEST_DECLARE_bool_)
+
+// Thread annotations
+#if !defined(GTEST_EXCLUSIVE_LOCK_REQUIRED_)
+# define GTEST_EXCLUSIVE_LOCK_REQUIRED_(locks)
+# define GTEST_LOCK_EXCLUDED_(locks)
+#endif  // !defined(GTEST_EXCLUSIVE_LOCK_REQUIRED_)
+
+// Parses 'str' for a 32-bit signed integer.  If successful, writes the result
+// to *value and returns true; otherwise leaves *value unchanged and returns
+// false.
+bool ParseInt32(const Message& src_text, const char* str, Int32* value);
+
+// Parses a bool/Int32/string from the environment variable
+// corresponding to the given Google Test flag.
+bool BoolFromGTestEnv(const char* flag, bool default_val);
+GTEST_API_ Int32 Int32FromGTestEnv(const char* flag, Int32 default_val);
+std::string OutputFlagAlsoCheckEnvVar();
+const char* StringFromGTestEnv(const char* flag, const char* default_val);
+
+}  // namespace internal
+}  // namespace testing
+
+#if !defined(GTEST_INTERNAL_DEPRECATED)
+
+// Internal Macro to mark an API deprecated, for googletest usage only
+// Usage: class GTEST_INTERNAL_DEPRECATED(message) MyClass or
+// GTEST_INTERNAL_DEPRECATED(message) <return_type> myFunction(); Every usage of
+// a deprecated entity will trigger a warning when compiled with
+// `-Wdeprecated-declarations` option (clang, gcc, any __GNUC__ compiler).
+// For msvc /W3 option will need to be used
+// Note that for 'other' compilers this macro evaluates to nothing to prevent
+// compilations errors.
+#if defined(_MSC_VER)
+#define GTEST_INTERNAL_DEPRECATED(message) __declspec(deprecated(message))
+#elif defined(__GNUC__)
+#define GTEST_INTERNAL_DEPRECATED(message) __attribute__((deprecated(message)))
+#else
+#define GTEST_INTERNAL_DEPRECATED(message)
+#endif
+
+#endif  // !defined(GTEST_INTERNAL_DEPRECATED)
+
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-string.h b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-string.h
new file mode 100644
index 0000000000000000000000000000000000000000..82aaa63bf4657569772b45746c390bcf1206ab56
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-string.h
@@ -0,0 +1,171 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This header file declares the String class and functions used internally by
+// Google Test.  They are subject to change without notice. They should not used
+// by code external to Google Test.
+//
+// This header file is #included by gtest-internal.h.
+// It should not be #included by other files.
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_
+
+#ifdef __BORLANDC__
+// string.h is not guaranteed to provide strcpy on C++ Builder.
+# include <mem.h>
+#endif
+
+#include <string.h>
+#include <string>
+
+#include "gtest/internal/gtest-port.h"
+
+namespace testing {
+namespace internal {
+
+// String - an abstract class holding static string utilities.
+class GTEST_API_ String {
+ public:
+  // Static utility methods
+
+  // Clones a 0-terminated C string, allocating memory using new.  The
+  // caller is responsible for deleting the return value using
+  // delete[].  Returns the cloned string, or NULL if the input is
+  // NULL.
+  //
+  // This is different from strdup() in string.h, which allocates
+  // memory using malloc().
+  static const char* CloneCString(const char* c_str);
+
+#if GTEST_OS_WINDOWS_MOBILE
+  // Windows CE does not have the 'ANSI' versions of Win32 APIs. To be
+  // able to pass strings to Win32 APIs on CE we need to convert them
+  // to 'Unicode', UTF-16.
+
+  // Creates a UTF-16 wide string from the given ANSI string, allocating
+  // memory using new. The caller is responsible for deleting the return
+  // value using delete[]. Returns the wide string, or NULL if the
+  // input is NULL.
+  //
+  // The wide string is created using the ANSI codepage (CP_ACP) to
+  // match the behaviour of the ANSI versions of Win32 calls and the
+  // C runtime.
+  static LPCWSTR AnsiToUtf16(const char* c_str);
+
+  // Creates an ANSI string from the given wide string, allocating
+  // memory using new. The caller is responsible for deleting the return
+  // value using delete[]. Returns the ANSI string, or NULL if the
+  // input is NULL.
+  //
+  // The returned string is created using the ANSI codepage (CP_ACP) to
+  // match the behaviour of the ANSI versions of Win32 calls and the
+  // C runtime.
+  static const char* Utf16ToAnsi(LPCWSTR utf16_str);
+#endif
+
+  // Compares two C strings.  Returns true if and only if they have the same
+  // content.
+  //
+  // Unlike strcmp(), this function can handle NULL argument(s).  A
+  // NULL C string is considered different to any non-NULL C string,
+  // including the empty string.
+  static bool CStringEquals(const char* lhs, const char* rhs);
+
+  // Converts a wide C string to a String using the UTF-8 encoding.
+  // NULL will be converted to "(null)".  If an error occurred during
+  // the conversion, "(failed to convert from wide string)" is
+  // returned.
+  static std::string ShowWideCString(const wchar_t* wide_c_str);
+
+  // Compares two wide C strings.  Returns true if and only if they have the
+  // same content.
+  //
+  // Unlike wcscmp(), this function can handle NULL argument(s).  A
+  // NULL C string is considered different to any non-NULL C string,
+  // including the empty string.
+  static bool WideCStringEquals(const wchar_t* lhs, const wchar_t* rhs);
+
+  // Compares two C strings, ignoring case.  Returns true if and only if
+  // they have the same content.
+  //
+  // Unlike strcasecmp(), this function can handle NULL argument(s).
+  // A NULL C string is considered different to any non-NULL C string,
+  // including the empty string.
+  static bool CaseInsensitiveCStringEquals(const char* lhs,
+                                           const char* rhs);
+
+  // Compares two wide C strings, ignoring case.  Returns true if and only if
+  // they have the same content.
+  //
+  // Unlike wcscasecmp(), this function can handle NULL argument(s).
+  // A NULL C string is considered different to any non-NULL wide C string,
+  // including the empty string.
+  // NB: The implementations on different platforms slightly differ.
+  // On windows, this method uses _wcsicmp which compares according to LC_CTYPE
+  // environment variable. On GNU platform this method uses wcscasecmp
+  // which compares according to LC_CTYPE category of the current locale.
+  // On MacOS X, it uses towlower, which also uses LC_CTYPE category of the
+  // current locale.
+  static bool CaseInsensitiveWideCStringEquals(const wchar_t* lhs,
+                                               const wchar_t* rhs);
+
+  // Returns true if and only if the given string ends with the given suffix,
+  // ignoring case. Any string is considered to end with an empty suffix.
+  static bool EndsWithCaseInsensitive(
+      const std::string& str, const std::string& suffix);
+
+  // Formats an int value as "%02d".
+  static std::string FormatIntWidth2(int value);  // "%02d" for width == 2
+
+  // Formats an int value as "%X".
+  static std::string FormatHexInt(int value);
+
+  // Formats an int value as "%X".
+  static std::string FormatHexUInt32(UInt32 value);
+
+  // Formats a byte as "%02X".
+  static std::string FormatByte(unsigned char value);
+
+ private:
+  String();  // Not meant to be instantiated.
+};  // class String
+
+// Gets the content of the stringstream's buffer as an std::string.  Each '\0'
+// character in the buffer is replaced with "\\0".
+GTEST_API_ std::string StringStreamToString(::std::stringstream* stream);
+
+}  // namespace internal
+}  // namespace testing
+
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-type-util.h b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-type-util.h
new file mode 100644
index 0000000000000000000000000000000000000000..3d7542d1fb3502bc22d6b844fb438be83d442aa3
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-type-util.h
@@ -0,0 +1,3335 @@
+// This file was GENERATED by command:
+//     pump.py gtest-type-util.h.pump
+// DO NOT EDIT BY HAND!!!
+
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Type utilities needed for implementing typed and type-parameterized
+// tests.  This file is generated by a SCRIPT.  DO NOT EDIT BY HAND!
+//
+// Currently we support at most 50 types in a list, and at most 50
+// type-parameterized tests in one type-parameterized test suite.
+// Please contact googletestframework@googlegroups.com if you need
+// more.
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
+
+#include "gtest/internal/gtest-port.h"
+
+// #ifdef __GNUC__ is too general here.  It is possible to use gcc without using
+// libstdc++ (which is where cxxabi.h comes from).
+# if GTEST_HAS_CXXABI_H_
+#  include <cxxabi.h>
+# elif defined(__HP_aCC)
+#  include <acxx_demangle.h>
+# endif  // GTEST_HASH_CXXABI_H_
+
+namespace testing {
+namespace internal {
+
+// Canonicalizes a given name with respect to the Standard C++ Library.
+// This handles removing the inline namespace within `std` that is
+// used by various standard libraries (e.g., `std::__1`).  Names outside
+// of namespace std are returned unmodified.
+inline std::string CanonicalizeForStdLibVersioning(std::string s) {
+  static const char prefix[] = "std::__";
+  if (s.compare(0, strlen(prefix), prefix) == 0) {
+    std::string::size_type end = s.find("::", strlen(prefix));
+    if (end != s.npos) {
+      // Erase everything between the initial `std` and the second `::`.
+      s.erase(strlen("std"), end - strlen("std"));
+    }
+  }
+  return s;
+}
+
+// GetTypeName<T>() returns a human-readable name of type T.
+// NB: This function is also used in Google Mock, so don't move it inside of
+// the typed-test-only section below.
+template <typename T>
+std::string GetTypeName() {
+# if GTEST_HAS_RTTI
+
+  const char* const name = typeid(T).name();
+#  if GTEST_HAS_CXXABI_H_ || defined(__HP_aCC)
+  int status = 0;
+  // gcc's implementation of typeid(T).name() mangles the type name,
+  // so we have to demangle it.
+#   if GTEST_HAS_CXXABI_H_
+  using abi::__cxa_demangle;
+#   endif  // GTEST_HAS_CXXABI_H_
+  char* const readable_name = __cxa_demangle(name, nullptr, nullptr, &status);
+  const std::string name_str(status == 0 ? readable_name : name);
+  free(readable_name);
+  return CanonicalizeForStdLibVersioning(name_str);
+#  else
+  return name;
+#  endif  // GTEST_HAS_CXXABI_H_ || __HP_aCC
+
+# else
+
+  return "<type>";
+
+# endif  // GTEST_HAS_RTTI
+}
+
+#if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
+
+// A unique type used as the default value for the arguments of class
+// template Types.  This allows us to simulate variadic templates
+// (e.g. Types<int>, Type<int, double>, and etc), which C++ doesn't
+// support directly.
+struct None {};
+
+// The following family of struct and struct templates are used to
+// represent type lists.  In particular, TypesN<T1, T2, ..., TN>
+// represents a type list with N types (T1, T2, ..., and TN) in it.
+// Except for Types0, every struct in the family has two member types:
+// Head for the first type in the list, and Tail for the rest of the
+// list.
+
+// The empty type list.
+struct Types0 {};
+
+// Type lists of length 1, 2, 3, and so on.
+
+template <typename T1>
+struct Types1 {
+  typedef T1 Head;
+  typedef Types0 Tail;
+};
+template <typename T1, typename T2>
+struct Types2 {
+  typedef T1 Head;
+  typedef Types1<T2> Tail;
+};
+
+template <typename T1, typename T2, typename T3>
+struct Types3 {
+  typedef T1 Head;
+  typedef Types2<T2, T3> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4>
+struct Types4 {
+  typedef T1 Head;
+  typedef Types3<T2, T3, T4> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5>
+struct Types5 {
+  typedef T1 Head;
+  typedef Types4<T2, T3, T4, T5> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6>
+struct Types6 {
+  typedef T1 Head;
+  typedef Types5<T2, T3, T4, T5, T6> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7>
+struct Types7 {
+  typedef T1 Head;
+  typedef Types6<T2, T3, T4, T5, T6, T7> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8>
+struct Types8 {
+  typedef T1 Head;
+  typedef Types7<T2, T3, T4, T5, T6, T7, T8> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9>
+struct Types9 {
+  typedef T1 Head;
+  typedef Types8<T2, T3, T4, T5, T6, T7, T8, T9> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10>
+struct Types10 {
+  typedef T1 Head;
+  typedef Types9<T2, T3, T4, T5, T6, T7, T8, T9, T10> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11>
+struct Types11 {
+  typedef T1 Head;
+  typedef Types10<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12>
+struct Types12 {
+  typedef T1 Head;
+  typedef Types11<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13>
+struct Types13 {
+  typedef T1 Head;
+  typedef Types12<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14>
+struct Types14 {
+  typedef T1 Head;
+  typedef Types13<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15>
+struct Types15 {
+  typedef T1 Head;
+  typedef Types14<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16>
+struct Types16 {
+  typedef T1 Head;
+  typedef Types15<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17>
+struct Types17 {
+  typedef T1 Head;
+  typedef Types16<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18>
+struct Types18 {
+  typedef T1 Head;
+  typedef Types17<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19>
+struct Types19 {
+  typedef T1 Head;
+  typedef Types18<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20>
+struct Types20 {
+  typedef T1 Head;
+  typedef Types19<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21>
+struct Types21 {
+  typedef T1 Head;
+  typedef Types20<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22>
+struct Types22 {
+  typedef T1 Head;
+  typedef Types21<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23>
+struct Types23 {
+  typedef T1 Head;
+  typedef Types22<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24>
+struct Types24 {
+  typedef T1 Head;
+  typedef Types23<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25>
+struct Types25 {
+  typedef T1 Head;
+  typedef Types24<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26>
+struct Types26 {
+  typedef T1 Head;
+  typedef Types25<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27>
+struct Types27 {
+  typedef T1 Head;
+  typedef Types26<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28>
+struct Types28 {
+  typedef T1 Head;
+  typedef Types27<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29>
+struct Types29 {
+  typedef T1 Head;
+  typedef Types28<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30>
+struct Types30 {
+  typedef T1 Head;
+  typedef Types29<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31>
+struct Types31 {
+  typedef T1 Head;
+  typedef Types30<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32>
+struct Types32 {
+  typedef T1 Head;
+  typedef Types31<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33>
+struct Types33 {
+  typedef T1 Head;
+  typedef Types32<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34>
+struct Types34 {
+  typedef T1 Head;
+  typedef Types33<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35>
+struct Types35 {
+  typedef T1 Head;
+  typedef Types34<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36>
+struct Types36 {
+  typedef T1 Head;
+  typedef Types35<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37>
+struct Types37 {
+  typedef T1 Head;
+  typedef Types36<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38>
+struct Types38 {
+  typedef T1 Head;
+  typedef Types37<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37, T38> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39>
+struct Types39 {
+  typedef T1 Head;
+  typedef Types38<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40>
+struct Types40 {
+  typedef T1 Head;
+  typedef Types39<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41>
+struct Types41 {
+  typedef T1 Head;
+  typedef Types40<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42>
+struct Types42 {
+  typedef T1 Head;
+  typedef Types41<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43>
+struct Types43 {
+  typedef T1 Head;
+  typedef Types42<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
+      T43> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44>
+struct Types44 {
+  typedef T1 Head;
+  typedef Types43<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
+      T44> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44, typename T45>
+struct Types45 {
+  typedef T1 Head;
+  typedef Types44<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
+      T44, T45> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44, typename T45,
+    typename T46>
+struct Types46 {
+  typedef T1 Head;
+  typedef Types45<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
+      T44, T45, T46> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44, typename T45,
+    typename T46, typename T47>
+struct Types47 {
+  typedef T1 Head;
+  typedef Types46<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
+      T44, T45, T46, T47> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44, typename T45,
+    typename T46, typename T47, typename T48>
+struct Types48 {
+  typedef T1 Head;
+  typedef Types47<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
+      T44, T45, T46, T47, T48> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44, typename T45,
+    typename T46, typename T47, typename T48, typename T49>
+struct Types49 {
+  typedef T1 Head;
+  typedef Types48<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
+      T44, T45, T46, T47, T48, T49> Tail;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44, typename T45,
+    typename T46, typename T47, typename T48, typename T49, typename T50>
+struct Types50 {
+  typedef T1 Head;
+  typedef Types49<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+      T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+      T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
+      T44, T45, T46, T47, T48, T49, T50> Tail;
+};
+
+
+}  // namespace internal
+
+// We don't want to require the users to write TypesN<...> directly,
+// as that would require them to count the length.  Types<...> is much
+// easier to write, but generates horrible messages when there is a
+// compiler error, as gcc insists on printing out each template
+// argument, even if it has the default value (this means Types<int>
+// will appear as Types<int, None, None, ..., None> in the compiler
+// errors).
+//
+// Our solution is to combine the best part of the two approaches: a
+// user would write Types<T1, ..., TN>, and Google Test will translate
+// that to TypesN<T1, ..., TN> internally to make error messages
+// readable.  The translation is done by the 'type' member of the
+// Types template.
+template <typename T1 = internal::None, typename T2 = internal::None,
+    typename T3 = internal::None, typename T4 = internal::None,
+    typename T5 = internal::None, typename T6 = internal::None,
+    typename T7 = internal::None, typename T8 = internal::None,
+    typename T9 = internal::None, typename T10 = internal::None,
+    typename T11 = internal::None, typename T12 = internal::None,
+    typename T13 = internal::None, typename T14 = internal::None,
+    typename T15 = internal::None, typename T16 = internal::None,
+    typename T17 = internal::None, typename T18 = internal::None,
+    typename T19 = internal::None, typename T20 = internal::None,
+    typename T21 = internal::None, typename T22 = internal::None,
+    typename T23 = internal::None, typename T24 = internal::None,
+    typename T25 = internal::None, typename T26 = internal::None,
+    typename T27 = internal::None, typename T28 = internal::None,
+    typename T29 = internal::None, typename T30 = internal::None,
+    typename T31 = internal::None, typename T32 = internal::None,
+    typename T33 = internal::None, typename T34 = internal::None,
+    typename T35 = internal::None, typename T36 = internal::None,
+    typename T37 = internal::None, typename T38 = internal::None,
+    typename T39 = internal::None, typename T40 = internal::None,
+    typename T41 = internal::None, typename T42 = internal::None,
+    typename T43 = internal::None, typename T44 = internal::None,
+    typename T45 = internal::None, typename T46 = internal::None,
+    typename T47 = internal::None, typename T48 = internal::None,
+    typename T49 = internal::None, typename T50 = internal::None>
+struct Types {
+  typedef internal::Types50<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
+      T41, T42, T43, T44, T45, T46, T47, T48, T49, T50> type;
+};
+
+template <>
+struct Types<internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None> {
+  typedef internal::Types0 type;
+};
+template <typename T1>
+struct Types<T1, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None> {
+  typedef internal::Types1<T1> type;
+};
+template <typename T1, typename T2>
+struct Types<T1, T2, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None> {
+  typedef internal::Types2<T1, T2> type;
+};
+template <typename T1, typename T2, typename T3>
+struct Types<T1, T2, T3, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None> {
+  typedef internal::Types3<T1, T2, T3> type;
+};
+template <typename T1, typename T2, typename T3, typename T4>
+struct Types<T1, T2, T3, T4, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None> {
+  typedef internal::Types4<T1, T2, T3, T4> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5>
+struct Types<T1, T2, T3, T4, T5, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None> {
+  typedef internal::Types5<T1, T2, T3, T4, T5> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6>
+struct Types<T1, T2, T3, T4, T5, T6, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None> {
+  typedef internal::Types6<T1, T2, T3, T4, T5, T6> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7>
+struct Types<T1, T2, T3, T4, T5, T6, T7, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None> {
+  typedef internal::Types7<T1, T2, T3, T4, T5, T6, T7> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None> {
+  typedef internal::Types8<T1, T2, T3, T4, T5, T6, T7, T8> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None> {
+  typedef internal::Types9<T1, T2, T3, T4, T5, T6, T7, T8, T9> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None> {
+  typedef internal::Types10<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None> {
+  typedef internal::Types11<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None> {
+  typedef internal::Types12<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11,
+      T12> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None> {
+  typedef internal::Types13<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None> {
+  typedef internal::Types14<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None> {
+  typedef internal::Types15<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None> {
+  typedef internal::Types16<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None> {
+  typedef internal::Types17<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None> {
+  typedef internal::Types18<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None> {
+  typedef internal::Types19<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None> {
+  typedef internal::Types20<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None> {
+  typedef internal::Types21<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None> {
+  typedef internal::Types22<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None> {
+  typedef internal::Types23<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None> {
+  typedef internal::Types24<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None> {
+  typedef internal::Types25<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None> {
+  typedef internal::Types26<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25,
+      T26> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None> {
+  typedef internal::Types27<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None> {
+  typedef internal::Types28<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None> {
+  typedef internal::Types29<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None> {
+  typedef internal::Types30<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None> {
+  typedef internal::Types31<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None> {
+  typedef internal::Types32<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None> {
+  typedef internal::Types33<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None> {
+  typedef internal::Types34<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None> {
+  typedef internal::Types35<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None> {
+  typedef internal::Types36<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, T37, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None> {
+  typedef internal::Types37<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, T37, T38, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None> {
+  typedef internal::Types38<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, T37, T38, T39, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None> {
+  typedef internal::Types39<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None> {
+  typedef internal::Types40<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39,
+      T40> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None, internal::None> {
+  typedef internal::Types41<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
+      T41> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, internal::None,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None> {
+  typedef internal::Types42<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
+      T41, T42> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None, internal::None> {
+  typedef internal::Types43<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
+      T41, T42, T43> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None, internal::None> {
+  typedef internal::Types44<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
+      T41, T42, T43, T44> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44, typename T45>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
+    internal::None, internal::None, internal::None, internal::None,
+    internal::None> {
+  typedef internal::Types45<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
+      T41, T42, T43, T44, T45> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44, typename T45,
+    typename T46>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
+    T46, internal::None, internal::None, internal::None, internal::None> {
+  typedef internal::Types46<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
+      T41, T42, T43, T44, T45, T46> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44, typename T45,
+    typename T46, typename T47>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
+    T46, T47, internal::None, internal::None, internal::None> {
+  typedef internal::Types47<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
+      T41, T42, T43, T44, T45, T46, T47> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44, typename T45,
+    typename T46, typename T47, typename T48>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
+    T46, T47, T48, internal::None, internal::None> {
+  typedef internal::Types48<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
+      T41, T42, T43, T44, T45, T46, T47, T48> type;
+};
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44, typename T45,
+    typename T46, typename T47, typename T48, typename T49>
+struct Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15,
+    T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30,
+    T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44, T45,
+    T46, T47, T48, T49, internal::None> {
+  typedef internal::Types49<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
+      T41, T42, T43, T44, T45, T46, T47, T48, T49> type;
+};
+
+namespace internal {
+
+# define GTEST_TEMPLATE_ template <typename T> class
+
+// The template "selector" struct TemplateSel<Tmpl> is used to
+// represent Tmpl, which must be a class template with one type
+// parameter, as a type.  TemplateSel<Tmpl>::Bind<T>::type is defined
+// as the type Tmpl<T>.  This allows us to actually instantiate the
+// template "selected" by TemplateSel<Tmpl>.
+//
+// This trick is necessary for simulating typedef for class templates,
+// which C++ doesn't support directly.
+template <GTEST_TEMPLATE_ Tmpl>
+struct TemplateSel {
+  template <typename T>
+  struct Bind {
+    typedef Tmpl<T> type;
+  };
+};
+
+# define GTEST_BIND_(TmplSel, T) \
+  TmplSel::template Bind<T>::type
+
+// A unique struct template used as the default value for the
+// arguments of class template Templates.  This allows us to simulate
+// variadic templates (e.g. Templates<int>, Templates<int, double>,
+// and etc), which C++ doesn't support directly.
+template <typename T>
+struct NoneT {};
+
+// The following family of struct and struct templates are used to
+// represent template lists.  In particular, TemplatesN<T1, T2, ...,
+// TN> represents a list of N templates (T1, T2, ..., and TN).  Except
+// for Templates0, every struct in the family has two member types:
+// Head for the selector of the first template in the list, and Tail
+// for the rest of the list.
+
+// The empty template list.
+struct Templates0 {};
+
+// Template lists of length 1, 2, 3, and so on.
+
+template <GTEST_TEMPLATE_ T1>
+struct Templates1 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates0 Tail;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2>
+struct Templates2 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates1<T2> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3>
+struct Templates3 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates2<T2, T3> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4>
+struct Templates4 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates3<T2, T3, T4> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5>
+struct Templates5 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates4<T2, T3, T4, T5> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6>
+struct Templates6 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates5<T2, T3, T4, T5, T6> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7>
+struct Templates7 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates6<T2, T3, T4, T5, T6, T7> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8>
+struct Templates8 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates7<T2, T3, T4, T5, T6, T7, T8> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9>
+struct Templates9 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates8<T2, T3, T4, T5, T6, T7, T8, T9> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10>
+struct Templates10 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates9<T2, T3, T4, T5, T6, T7, T8, T9, T10> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11>
+struct Templates11 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates10<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12>
+struct Templates12 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates11<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13>
+struct Templates13 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates12<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14>
+struct Templates14 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates13<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15>
+struct Templates15 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates14<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16>
+struct Templates16 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates15<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17>
+struct Templates17 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates16<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18>
+struct Templates18 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates17<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19>
+struct Templates19 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates18<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20>
+struct Templates20 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates19<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21>
+struct Templates21 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates20<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22>
+struct Templates22 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates21<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23>
+struct Templates23 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates22<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24>
+struct Templates24 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates23<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25>
+struct Templates25 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates24<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26>
+struct Templates26 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates25<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27>
+struct Templates27 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates26<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28>
+struct Templates28 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates27<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29>
+struct Templates29 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates28<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30>
+struct Templates30 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates29<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31>
+struct Templates31 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates30<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32>
+struct Templates32 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates31<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33>
+struct Templates33 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates32<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34>
+struct Templates34 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates33<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35>
+struct Templates35 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates34<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36>
+struct Templates36 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates35<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37>
+struct Templates37 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates36<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38>
+struct Templates38 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates37<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39>
+struct Templates39 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates38<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40>
+struct Templates40 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates39<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41>
+struct Templates41 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates40<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42>
+struct Templates42 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates41<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
+      T42> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43>
+struct Templates43 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates42<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
+      T43> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44>
+struct Templates44 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates43<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
+      T43, T44> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45>
+struct Templates45 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates44<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
+      T43, T44, T45> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
+    GTEST_TEMPLATE_ T46>
+struct Templates46 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates45<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
+      T43, T44, T45, T46> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
+    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47>
+struct Templates47 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates46<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
+      T43, T44, T45, T46, T47> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
+    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48>
+struct Templates48 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates47<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
+      T43, T44, T45, T46, T47, T48> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
+    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48,
+    GTEST_TEMPLATE_ T49>
+struct Templates49 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates48<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
+      T43, T44, T45, T46, T47, T48, T49> Tail;
+};
+
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
+    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48,
+    GTEST_TEMPLATE_ T49, GTEST_TEMPLATE_ T50>
+struct Templates50 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates49<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+      T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+      T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42,
+      T43, T44, T45, T46, T47, T48, T49, T50> Tail;
+};
+
+
+// We don't want to require the users to write TemplatesN<...> directly,
+// as that would require them to count the length.  Templates<...> is much
+// easier to write, but generates horrible messages when there is a
+// compiler error, as gcc insists on printing out each template
+// argument, even if it has the default value (this means Templates<list>
+// will appear as Templates<list, NoneT, NoneT, ..., NoneT> in the compiler
+// errors).
+//
+// Our solution is to combine the best part of the two approaches: a
+// user would write Templates<T1, ..., TN>, and Google Test will translate
+// that to TemplatesN<T1, ..., TN> internally to make error messages
+// readable.  The translation is done by the 'type' member of the
+// Templates template.
+template <GTEST_TEMPLATE_ T1 = NoneT, GTEST_TEMPLATE_ T2 = NoneT,
+    GTEST_TEMPLATE_ T3 = NoneT, GTEST_TEMPLATE_ T4 = NoneT,
+    GTEST_TEMPLATE_ T5 = NoneT, GTEST_TEMPLATE_ T6 = NoneT,
+    GTEST_TEMPLATE_ T7 = NoneT, GTEST_TEMPLATE_ T8 = NoneT,
+    GTEST_TEMPLATE_ T9 = NoneT, GTEST_TEMPLATE_ T10 = NoneT,
+    GTEST_TEMPLATE_ T11 = NoneT, GTEST_TEMPLATE_ T12 = NoneT,
+    GTEST_TEMPLATE_ T13 = NoneT, GTEST_TEMPLATE_ T14 = NoneT,
+    GTEST_TEMPLATE_ T15 = NoneT, GTEST_TEMPLATE_ T16 = NoneT,
+    GTEST_TEMPLATE_ T17 = NoneT, GTEST_TEMPLATE_ T18 = NoneT,
+    GTEST_TEMPLATE_ T19 = NoneT, GTEST_TEMPLATE_ T20 = NoneT,
+    GTEST_TEMPLATE_ T21 = NoneT, GTEST_TEMPLATE_ T22 = NoneT,
+    GTEST_TEMPLATE_ T23 = NoneT, GTEST_TEMPLATE_ T24 = NoneT,
+    GTEST_TEMPLATE_ T25 = NoneT, GTEST_TEMPLATE_ T26 = NoneT,
+    GTEST_TEMPLATE_ T27 = NoneT, GTEST_TEMPLATE_ T28 = NoneT,
+    GTEST_TEMPLATE_ T29 = NoneT, GTEST_TEMPLATE_ T30 = NoneT,
+    GTEST_TEMPLATE_ T31 = NoneT, GTEST_TEMPLATE_ T32 = NoneT,
+    GTEST_TEMPLATE_ T33 = NoneT, GTEST_TEMPLATE_ T34 = NoneT,
+    GTEST_TEMPLATE_ T35 = NoneT, GTEST_TEMPLATE_ T36 = NoneT,
+    GTEST_TEMPLATE_ T37 = NoneT, GTEST_TEMPLATE_ T38 = NoneT,
+    GTEST_TEMPLATE_ T39 = NoneT, GTEST_TEMPLATE_ T40 = NoneT,
+    GTEST_TEMPLATE_ T41 = NoneT, GTEST_TEMPLATE_ T42 = NoneT,
+    GTEST_TEMPLATE_ T43 = NoneT, GTEST_TEMPLATE_ T44 = NoneT,
+    GTEST_TEMPLATE_ T45 = NoneT, GTEST_TEMPLATE_ T46 = NoneT,
+    GTEST_TEMPLATE_ T47 = NoneT, GTEST_TEMPLATE_ T48 = NoneT,
+    GTEST_TEMPLATE_ T49 = NoneT, GTEST_TEMPLATE_ T50 = NoneT>
+struct Templates {
+  typedef Templates50<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
+      T42, T43, T44, T45, T46, T47, T48, T49, T50> type;
+};
+
+template <>
+struct Templates<NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT> {
+  typedef Templates0 type;
+};
+template <GTEST_TEMPLATE_ T1>
+struct Templates<T1, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT> {
+  typedef Templates1<T1> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2>
+struct Templates<T1, T2, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT> {
+  typedef Templates2<T1, T2> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3>
+struct Templates<T1, T2, T3, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates3<T1, T2, T3> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4>
+struct Templates<T1, T2, T3, T4, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates4<T1, T2, T3, T4> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5>
+struct Templates<T1, T2, T3, T4, T5, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates5<T1, T2, T3, T4, T5> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6>
+struct Templates<T1, T2, T3, T4, T5, T6, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates6<T1, T2, T3, T4, T5, T6> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates7<T1, T2, T3, T4, T5, T6, T7> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates8<T1, T2, T3, T4, T5, T6, T7, T8> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates9<T1, T2, T3, T4, T5, T6, T7, T8, T9> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates10<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates11<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates12<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates13<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates14<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates15<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates16<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates17<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates18<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates19<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates20<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates21<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT> {
+  typedef Templates22<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT> {
+  typedef Templates23<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT> {
+  typedef Templates24<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT> {
+  typedef Templates25<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT> {
+  typedef Templates26<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT> {
+  typedef Templates27<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT> {
+  typedef Templates28<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT> {
+  typedef Templates29<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates30<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates31<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates32<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates33<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates34<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates35<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates36<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, T37, NoneT, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates37<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, T37, T38, NoneT, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates38<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates39<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, NoneT, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates40<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, NoneT, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates41<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
+      T41> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, NoneT,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates42<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
+      T42> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates43<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
+      T42, T43> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
+    NoneT, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates44<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
+      T42, T43, T44> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
+    T45, NoneT, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates45<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
+      T42, T43, T44, T45> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
+    GTEST_TEMPLATE_ T46>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
+    T45, T46, NoneT, NoneT, NoneT, NoneT> {
+  typedef Templates46<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
+      T42, T43, T44, T45, T46> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
+    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
+    T45, T46, T47, NoneT, NoneT, NoneT> {
+  typedef Templates47<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
+      T42, T43, T44, T45, T46, T47> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
+    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
+    T45, T46, T47, T48, NoneT, NoneT> {
+  typedef Templates48<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
+      T42, T43, T44, T45, T46, T47, T48> type;
+};
+template <GTEST_TEMPLATE_ T1, GTEST_TEMPLATE_ T2, GTEST_TEMPLATE_ T3,
+    GTEST_TEMPLATE_ T4, GTEST_TEMPLATE_ T5, GTEST_TEMPLATE_ T6,
+    GTEST_TEMPLATE_ T7, GTEST_TEMPLATE_ T8, GTEST_TEMPLATE_ T9,
+    GTEST_TEMPLATE_ T10, GTEST_TEMPLATE_ T11, GTEST_TEMPLATE_ T12,
+    GTEST_TEMPLATE_ T13, GTEST_TEMPLATE_ T14, GTEST_TEMPLATE_ T15,
+    GTEST_TEMPLATE_ T16, GTEST_TEMPLATE_ T17, GTEST_TEMPLATE_ T18,
+    GTEST_TEMPLATE_ T19, GTEST_TEMPLATE_ T20, GTEST_TEMPLATE_ T21,
+    GTEST_TEMPLATE_ T22, GTEST_TEMPLATE_ T23, GTEST_TEMPLATE_ T24,
+    GTEST_TEMPLATE_ T25, GTEST_TEMPLATE_ T26, GTEST_TEMPLATE_ T27,
+    GTEST_TEMPLATE_ T28, GTEST_TEMPLATE_ T29, GTEST_TEMPLATE_ T30,
+    GTEST_TEMPLATE_ T31, GTEST_TEMPLATE_ T32, GTEST_TEMPLATE_ T33,
+    GTEST_TEMPLATE_ T34, GTEST_TEMPLATE_ T35, GTEST_TEMPLATE_ T36,
+    GTEST_TEMPLATE_ T37, GTEST_TEMPLATE_ T38, GTEST_TEMPLATE_ T39,
+    GTEST_TEMPLATE_ T40, GTEST_TEMPLATE_ T41, GTEST_TEMPLATE_ T42,
+    GTEST_TEMPLATE_ T43, GTEST_TEMPLATE_ T44, GTEST_TEMPLATE_ T45,
+    GTEST_TEMPLATE_ T46, GTEST_TEMPLATE_ T47, GTEST_TEMPLATE_ T48,
+    GTEST_TEMPLATE_ T49>
+struct Templates<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+    T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29,
+    T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43, T44,
+    T45, T46, T47, T48, T49, NoneT> {
+  typedef Templates49<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+      T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27,
+      T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41,
+      T42, T43, T44, T45, T46, T47, T48, T49> type;
+};
+
+// The TypeList template makes it possible to use either a single type
+// or a Types<...> list in TYPED_TEST_SUITE() and
+// INSTANTIATE_TYPED_TEST_SUITE_P().
+
+template <typename T>
+struct TypeList {
+  typedef Types1<T> type;
+};
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+    typename T6, typename T7, typename T8, typename T9, typename T10,
+    typename T11, typename T12, typename T13, typename T14, typename T15,
+    typename T16, typename T17, typename T18, typename T19, typename T20,
+    typename T21, typename T22, typename T23, typename T24, typename T25,
+    typename T26, typename T27, typename T28, typename T29, typename T30,
+    typename T31, typename T32, typename T33, typename T34, typename T35,
+    typename T36, typename T37, typename T38, typename T39, typename T40,
+    typename T41, typename T42, typename T43, typename T44, typename T45,
+    typename T46, typename T47, typename T48, typename T49, typename T50>
+struct TypeList<Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13,
+    T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28,
+    T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40, T41, T42, T43,
+    T44, T45, T46, T47, T48, T49, T50> > {
+  typedef typename Types<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12,
+      T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26,
+      T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, T38, T39, T40,
+      T41, T42, T43, T44, T45, T46, T47, T48, T49, T50>::type type;
+};
+
+#endif  // GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
+
+}  // namespace internal
+}  // namespace testing
+
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
diff --git a/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-type-util.h.pump b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-type-util.h.pump
new file mode 100644
index 0000000000000000000000000000000000000000..5e31b7b3206b284a3da32769faea0de185e054a8
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/include/gtest/internal/gtest-type-util.h.pump
@@ -0,0 +1,302 @@
+$$ -*- mode: c++; -*-
+$var n = 50  $$ Maximum length of type lists we want to support.
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Type utilities needed for implementing typed and type-parameterized
+// tests.  This file is generated by a SCRIPT.  DO NOT EDIT BY HAND!
+//
+// Currently we support at most $n types in a list, and at most $n
+// type-parameterized tests in one type-parameterized test suite.
+// Please contact googletestframework@googlegroups.com if you need
+// more.
+
+// GOOGLETEST_CM0001 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
+#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
+
+#include "gtest/internal/gtest-port.h"
+
+// #ifdef __GNUC__ is too general here.  It is possible to use gcc without using
+// libstdc++ (which is where cxxabi.h comes from).
+# if GTEST_HAS_CXXABI_H_
+#  include <cxxabi.h>
+# elif defined(__HP_aCC)
+#  include <acxx_demangle.h>
+# endif  // GTEST_HASH_CXXABI_H_
+
+namespace testing {
+namespace internal {
+
+// Canonicalizes a given name with respect to the Standard C++ Library.
+// This handles removing the inline namespace within `std` that is
+// used by various standard libraries (e.g., `std::__1`).  Names outside
+// of namespace std are returned unmodified.
+inline std::string CanonicalizeForStdLibVersioning(std::string s) {
+  static const char prefix[] = "std::__";
+  if (s.compare(0, strlen(prefix), prefix) == 0) {
+    std::string::size_type end = s.find("::", strlen(prefix));
+    if (end != s.npos) {
+      // Erase everything between the initial `std` and the second `::`.
+      s.erase(strlen("std"), end - strlen("std"));
+    }
+  }
+  return s;
+}
+
+// GetTypeName<T>() returns a human-readable name of type T.
+// NB: This function is also used in Google Mock, so don't move it inside of
+// the typed-test-only section below.
+template <typename T>
+std::string GetTypeName() {
+# if GTEST_HAS_RTTI
+
+  const char* const name = typeid(T).name();
+#  if GTEST_HAS_CXXABI_H_ || defined(__HP_aCC)
+  int status = 0;
+  // gcc's implementation of typeid(T).name() mangles the type name,
+  // so we have to demangle it.
+#   if GTEST_HAS_CXXABI_H_
+  using abi::__cxa_demangle;
+#   endif  // GTEST_HAS_CXXABI_H_
+  char* const readable_name = __cxa_demangle(name, nullptr, nullptr, &status);
+  const std::string name_str(status == 0 ? readable_name : name);
+  free(readable_name);
+  return CanonicalizeForStdLibVersioning(name_str);
+#  else
+  return name;
+#  endif  // GTEST_HAS_CXXABI_H_ || __HP_aCC
+
+# else
+
+  return "<type>";
+
+# endif  // GTEST_HAS_RTTI
+}
+
+#if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
+
+// A unique type used as the default value for the arguments of class
+// template Types.  This allows us to simulate variadic templates
+// (e.g. Types<int>, Type<int, double>, and etc), which C++ doesn't
+// support directly.
+struct None {};
+
+// The following family of struct and struct templates are used to
+// represent type lists.  In particular, TypesN<T1, T2, ..., TN>
+// represents a type list with N types (T1, T2, ..., and TN) in it.
+// Except for Types0, every struct in the family has two member types:
+// Head for the first type in the list, and Tail for the rest of the
+// list.
+
+// The empty type list.
+struct Types0 {};
+
+// Type lists of length 1, 2, 3, and so on.
+
+template <typename T1>
+struct Types1 {
+  typedef T1 Head;
+  typedef Types0 Tail;
+};
+
+$range i 2..n
+
+$for i [[
+$range j 1..i
+$range k 2..i
+template <$for j, [[typename T$j]]>
+struct Types$i {
+  typedef T1 Head;
+  typedef Types$(i-1)<$for k, [[T$k]]> Tail;
+};
+
+
+]]
+
+}  // namespace internal
+
+// We don't want to require the users to write TypesN<...> directly,
+// as that would require them to count the length.  Types<...> is much
+// easier to write, but generates horrible messages when there is a
+// compiler error, as gcc insists on printing out each template
+// argument, even if it has the default value (this means Types<int>
+// will appear as Types<int, None, None, ..., None> in the compiler
+// errors).
+//
+// Our solution is to combine the best part of the two approaches: a
+// user would write Types<T1, ..., TN>, and Google Test will translate
+// that to TypesN<T1, ..., TN> internally to make error messages
+// readable.  The translation is done by the 'type' member of the
+// Types template.
+
+$range i 1..n
+template <$for i, [[typename T$i = internal::None]]>
+struct Types {
+  typedef internal::Types$n<$for i, [[T$i]]> type;
+};
+
+template <>
+struct Types<$for i, [[internal::None]]> {
+  typedef internal::Types0 type;
+};
+
+$range i 1..n-1
+$for i [[
+$range j 1..i
+$range k i+1..n
+template <$for j, [[typename T$j]]>
+struct Types<$for j, [[T$j]]$for k[[, internal::None]]> {
+  typedef internal::Types$i<$for j, [[T$j]]> type;
+};
+
+]]
+
+namespace internal {
+
+# define GTEST_TEMPLATE_ template <typename T> class
+
+// The template "selector" struct TemplateSel<Tmpl> is used to
+// represent Tmpl, which must be a class template with one type
+// parameter, as a type.  TemplateSel<Tmpl>::Bind<T>::type is defined
+// as the type Tmpl<T>.  This allows us to actually instantiate the
+// template "selected" by TemplateSel<Tmpl>.
+//
+// This trick is necessary for simulating typedef for class templates,
+// which C++ doesn't support directly.
+template <GTEST_TEMPLATE_ Tmpl>
+struct TemplateSel {
+  template <typename T>
+  struct Bind {
+    typedef Tmpl<T> type;
+  };
+};
+
+# define GTEST_BIND_(TmplSel, T) \
+  TmplSel::template Bind<T>::type
+
+// A unique struct template used as the default value for the
+// arguments of class template Templates.  This allows us to simulate
+// variadic templates (e.g. Templates<int>, Templates<int, double>,
+// and etc), which C++ doesn't support directly.
+template <typename T>
+struct NoneT {};
+
+// The following family of struct and struct templates are used to
+// represent template lists.  In particular, TemplatesN<T1, T2, ...,
+// TN> represents a list of N templates (T1, T2, ..., and TN).  Except
+// for Templates0, every struct in the family has two member types:
+// Head for the selector of the first template in the list, and Tail
+// for the rest of the list.
+
+// The empty template list.
+struct Templates0 {};
+
+// Template lists of length 1, 2, 3, and so on.
+
+template <GTEST_TEMPLATE_ T1>
+struct Templates1 {
+  typedef TemplateSel<T1> Head;
+  typedef Templates0 Tail;
+};
+
+$range i 2..n
+
+$for i [[
+$range j 1..i
+$range k 2..i
+template <$for j, [[GTEST_TEMPLATE_ T$j]]>
+struct Templates$i {
+  typedef TemplateSel<T1> Head;
+  typedef Templates$(i-1)<$for k, [[T$k]]> Tail;
+};
+
+
+]]
+
+// We don't want to require the users to write TemplatesN<...> directly,
+// as that would require them to count the length.  Templates<...> is much
+// easier to write, but generates horrible messages when there is a
+// compiler error, as gcc insists on printing out each template
+// argument, even if it has the default value (this means Templates<list>
+// will appear as Templates<list, NoneT, NoneT, ..., NoneT> in the compiler
+// errors).
+//
+// Our solution is to combine the best part of the two approaches: a
+// user would write Templates<T1, ..., TN>, and Google Test will translate
+// that to TemplatesN<T1, ..., TN> internally to make error messages
+// readable.  The translation is done by the 'type' member of the
+// Templates template.
+
+$range i 1..n
+template <$for i, [[GTEST_TEMPLATE_ T$i = NoneT]]>
+struct Templates {
+  typedef Templates$n<$for i, [[T$i]]> type;
+};
+
+template <>
+struct Templates<$for i, [[NoneT]]> {
+  typedef Templates0 type;
+};
+
+$range i 1..n-1
+$for i [[
+$range j 1..i
+$range k i+1..n
+template <$for j, [[GTEST_TEMPLATE_ T$j]]>
+struct Templates<$for j, [[T$j]]$for k[[, NoneT]]> {
+  typedef Templates$i<$for j, [[T$j]]> type;
+};
+
+]]
+
+// The TypeList template makes it possible to use either a single type
+// or a Types<...> list in TYPED_TEST_SUITE() and
+// INSTANTIATE_TYPED_TEST_SUITE_P().
+
+template <typename T>
+struct TypeList {
+  typedef Types1<T> type;
+};
+
+
+$range i 1..n
+template <$for i, [[typename T$i]]>
+struct TypeList<Types<$for i, [[T$i]]> > {
+  typedef typename Types<$for i, [[T$i]]>::type type;
+};
+
+#endif  // GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
+
+}  // namespace internal
+}  // namespace testing
+
+#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
diff --git a/build/_deps/googletest-src/googletest/samples/prime_tables.h b/build/_deps/googletest-src/googletest/samples/prime_tables.h
new file mode 100644
index 0000000000000000000000000000000000000000..72539bf14a2314cf0044fee4d2fb8de272368cb1
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/prime_tables.h
@@ -0,0 +1,126 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+
+// This provides interface PrimeTable that determines whether a number is a
+// prime and determines a next prime number. This interface is used
+// in Google Test samples demonstrating use of parameterized tests.
+
+#ifndef GTEST_SAMPLES_PRIME_TABLES_H_
+#define GTEST_SAMPLES_PRIME_TABLES_H_
+
+#include <algorithm>
+
+// The prime table interface.
+class PrimeTable {
+ public:
+  virtual ~PrimeTable() {}
+
+  // Returns true if and only if n is a prime number.
+  virtual bool IsPrime(int n) const = 0;
+
+  // Returns the smallest prime number greater than p; or returns -1
+  // if the next prime is beyond the capacity of the table.
+  virtual int GetNextPrime(int p) const = 0;
+};
+
+// Implementation #1 calculates the primes on-the-fly.
+class OnTheFlyPrimeTable : public PrimeTable {
+ public:
+  bool IsPrime(int n) const override {
+    if (n <= 1) return false;
+
+    for (int i = 2; i*i <= n; i++) {
+      // n is divisible by an integer other than 1 and itself.
+      if ((n % i) == 0) return false;
+    }
+
+    return true;
+  }
+
+  int GetNextPrime(int p) const override {
+    for (int n = p + 1; n > 0; n++) {
+      if (IsPrime(n)) return n;
+    }
+
+    return -1;
+  }
+};
+
+// Implementation #2 pre-calculates the primes and stores the result
+// in an array.
+class PreCalculatedPrimeTable : public PrimeTable {
+ public:
+  // 'max' specifies the maximum number the prime table holds.
+  explicit PreCalculatedPrimeTable(int max)
+      : is_prime_size_(max + 1), is_prime_(new bool[max + 1]) {
+    CalculatePrimesUpTo(max);
+  }
+  ~PreCalculatedPrimeTable() override { delete[] is_prime_; }
+
+  bool IsPrime(int n) const override {
+    return 0 <= n && n < is_prime_size_ && is_prime_[n];
+  }
+
+  int GetNextPrime(int p) const override {
+    for (int n = p + 1; n < is_prime_size_; n++) {
+      if (is_prime_[n]) return n;
+    }
+
+    return -1;
+  }
+
+ private:
+  void CalculatePrimesUpTo(int max) {
+    ::std::fill(is_prime_, is_prime_ + is_prime_size_, true);
+    is_prime_[0] = is_prime_[1] = false;
+
+    // Checks every candidate for prime number (we know that 2 is the only even
+    // prime).
+    for (int i = 2; i*i <= max; i += i%2+1) {
+      if (!is_prime_[i]) continue;
+
+      // Marks all multiples of i (except i itself) as non-prime.
+      // We are starting here from i-th multiplier, because all smaller
+      // complex numbers were already marked.
+      for (int j = i*i; j <= max; j += i) {
+        is_prime_[j] = false;
+      }
+    }
+  }
+
+  const int is_prime_size_;
+  bool* const is_prime_;
+
+  // Disables compiler warning "assignment operator could not be generated."
+  void operator=(const PreCalculatedPrimeTable& rhs);
+};
+
+#endif  // GTEST_SAMPLES_PRIME_TABLES_H_
diff --git a/build/_deps/googletest-src/googletest/samples/sample1.cc b/build/_deps/googletest-src/googletest/samples/sample1.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1d4275979ff61101bf1ae9c3205f41f40830c336
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample1.cc
@@ -0,0 +1,66 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// A sample program demonstrating using Google C++ testing framework.
+
+#include "sample1.h"
+
+// Returns n! (the factorial of n).  For negative n, n! is defined to be 1.
+int Factorial(int n) {
+  int result = 1;
+  for (int i = 1; i <= n; i++) {
+    result *= i;
+  }
+
+  return result;
+}
+
+// Returns true if and only if n is a prime number.
+bool IsPrime(int n) {
+  // Trivial case 1: small numbers
+  if (n <= 1) return false;
+
+  // Trivial case 2: even numbers
+  if (n % 2 == 0) return n == 2;
+
+  // Now, we have that n is odd and n >= 3.
+
+  // Try to divide n by every odd number i, starting from 3
+  for (int i = 3; ; i += 2) {
+    // We only have to try i up to the square root of n
+    if (i > n/i) break;
+
+    // Now, we have i <= n/i < n.
+    // If n is divisible by i, n is not prime.
+    if (n % i == 0) return false;
+  }
+
+  // n has no integer factor in the range (1, n), and thus is prime.
+  return true;
+}
diff --git a/build/_deps/googletest-src/googletest/samples/sample1.h b/build/_deps/googletest-src/googletest/samples/sample1.h
new file mode 100644
index 0000000000000000000000000000000000000000..12e49deafa2c9328e722e795d02f02aa9777bed0
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample1.h
@@ -0,0 +1,41 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// A sample program demonstrating using Google C++ testing framework.
+
+#ifndef GTEST_SAMPLES_SAMPLE1_H_
+#define GTEST_SAMPLES_SAMPLE1_H_
+
+// Returns n! (the factorial of n).  For negative n, n! is defined to be 1.
+int Factorial(int n);
+
+// Returns true if and only if n is a prime number.
+bool IsPrime(int n);
+
+#endif  // GTEST_SAMPLES_SAMPLE1_H_
diff --git a/build/_deps/googletest-src/googletest/samples/sample10_unittest.cc b/build/_deps/googletest-src/googletest/samples/sample10_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..36cdac2279aeea702e0d3520c77258e9273726a5
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample10_unittest.cc
@@ -0,0 +1,139 @@
+// Copyright 2009 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// This sample shows how to use Google Test listener API to implement
+// a primitive leak checker.
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "gtest/gtest.h"
+using ::testing::EmptyTestEventListener;
+using ::testing::InitGoogleTest;
+using ::testing::Test;
+using ::testing::TestEventListeners;
+using ::testing::TestInfo;
+using ::testing::TestPartResult;
+using ::testing::UnitTest;
+
+namespace {
+// We will track memory used by this class.
+class Water {
+ public:
+  // Normal Water declarations go here.
+
+  // operator new and operator delete help us control water allocation.
+  void* operator new(size_t allocation_size) {
+    allocated_++;
+    return malloc(allocation_size);
+  }
+
+  void operator delete(void* block, size_t /* allocation_size */) {
+    allocated_--;
+    free(block);
+  }
+
+  static int allocated() { return allocated_; }
+
+ private:
+  static int allocated_;
+};
+
+int Water::allocated_ = 0;
+
+// This event listener monitors how many Water objects are created and
+// destroyed by each test, and reports a failure if a test leaks some Water
+// objects. It does this by comparing the number of live Water objects at
+// the beginning of a test and at the end of a test.
+class LeakChecker : public EmptyTestEventListener {
+ private:
+  // Called before a test starts.
+  void OnTestStart(const TestInfo& /* test_info */) override {
+    initially_allocated_ = Water::allocated();
+  }
+
+  // Called after a test ends.
+  void OnTestEnd(const TestInfo& /* test_info */) override {
+    int difference = Water::allocated() - initially_allocated_;
+
+    // You can generate a failure in any event handler except
+    // OnTestPartResult. Just use an appropriate Google Test assertion to do
+    // it.
+    EXPECT_LE(difference, 0) << "Leaked " << difference << " unit(s) of Water!";
+  }
+
+  int initially_allocated_;
+};
+
+TEST(ListenersTest, DoesNotLeak) {
+  Water* water = new Water;
+  delete water;
+}
+
+// This should fail when the --check_for_leaks command line flag is
+// specified.
+TEST(ListenersTest, LeaksWater) {
+  Water* water = new Water;
+  EXPECT_TRUE(water != nullptr);
+}
+}  // namespace
+
+int main(int argc, char **argv) {
+  InitGoogleTest(&argc, argv);
+
+  bool check_for_leaks = false;
+  if (argc > 1 && strcmp(argv[1], "--check_for_leaks") == 0 )
+    check_for_leaks = true;
+  else
+    printf("%s\n", "Run this program with --check_for_leaks to enable "
+           "custom leak checking in the tests.");
+
+  // If we are given the --check_for_leaks command line flag, installs the
+  // leak checker.
+  if (check_for_leaks) {
+    TestEventListeners& listeners = UnitTest::GetInstance()->listeners();
+
+    // Adds the leak checker to the end of the test event listener list,
+    // after the default text output printer and the default XML report
+    // generator.
+    //
+    // The order is important - it ensures that failures generated in the
+    // leak checker's OnTestEnd() method are processed by the text and XML
+    // printers *before* their OnTestEnd() methods are called, such that
+    // they are attributed to the right test. Remember that a listener
+    // receives an OnXyzStart event *after* listeners preceding it in the
+    // list received that event, and receives an OnXyzEnd event *before*
+    // listeners preceding it.
+    //
+    // We don't need to worry about deleting the new listener later, as
+    // Google Test will do it.
+    listeners.Append(new LeakChecker);
+  }
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googletest/samples/sample1_unittest.cc b/build/_deps/googletest-src/googletest/samples/sample1_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..cb08b61a59a9e16b3657861f1c9609001d2096b2
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample1_unittest.cc
@@ -0,0 +1,151 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// A sample program demonstrating using Google C++ testing framework.
+
+// This sample shows how to write a simple unit test for a function,
+// using Google C++ testing framework.
+//
+// Writing a unit test using Google C++ testing framework is easy as 1-2-3:
+
+
+// Step 1. Include necessary header files such that the stuff your
+// test logic needs is declared.
+//
+// Don't forget gtest.h, which declares the testing framework.
+
+#include <limits.h>
+#include "sample1.h"
+#include "gtest/gtest.h"
+namespace {
+
+// Step 2. Use the TEST macro to define your tests.
+//
+// TEST has two parameters: the test case name and the test name.
+// After using the macro, you should define your test logic between a
+// pair of braces.  You can use a bunch of macros to indicate the
+// success or failure of a test.  EXPECT_TRUE and EXPECT_EQ are
+// examples of such macros.  For a complete list, see gtest.h.
+//
+// <TechnicalDetails>
+//
+// In Google Test, tests are grouped into test cases.  This is how we
+// keep test code organized.  You should put logically related tests
+// into the same test case.
+//
+// The test case name and the test name should both be valid C++
+// identifiers.  And you should not use underscore (_) in the names.
+//
+// Google Test guarantees that each test you define is run exactly
+// once, but it makes no guarantee on the order the tests are
+// executed.  Therefore, you should write your tests in such a way
+// that their results don't depend on their order.
+//
+// </TechnicalDetails>
+
+
+// Tests Factorial().
+
+// Tests factorial of negative numbers.
+TEST(FactorialTest, Negative) {
+  // This test is named "Negative", and belongs to the "FactorialTest"
+  // test case.
+  EXPECT_EQ(1, Factorial(-5));
+  EXPECT_EQ(1, Factorial(-1));
+  EXPECT_GT(Factorial(-10), 0);
+
+  // <TechnicalDetails>
+  //
+  // EXPECT_EQ(expected, actual) is the same as
+  //
+  //   EXPECT_TRUE((expected) == (actual))
+  //
+  // except that it will print both the expected value and the actual
+  // value when the assertion fails.  This is very helpful for
+  // debugging.  Therefore in this case EXPECT_EQ is preferred.
+  //
+  // On the other hand, EXPECT_TRUE accepts any Boolean expression,
+  // and is thus more general.
+  //
+  // </TechnicalDetails>
+}
+
+// Tests factorial of 0.
+TEST(FactorialTest, Zero) {
+  EXPECT_EQ(1, Factorial(0));
+}
+
+// Tests factorial of positive numbers.
+TEST(FactorialTest, Positive) {
+  EXPECT_EQ(1, Factorial(1));
+  EXPECT_EQ(2, Factorial(2));
+  EXPECT_EQ(6, Factorial(3));
+  EXPECT_EQ(40320, Factorial(8));
+}
+
+
+// Tests IsPrime()
+
+// Tests negative input.
+TEST(IsPrimeTest, Negative) {
+  // This test belongs to the IsPrimeTest test case.
+
+  EXPECT_FALSE(IsPrime(-1));
+  EXPECT_FALSE(IsPrime(-2));
+  EXPECT_FALSE(IsPrime(INT_MIN));
+}
+
+// Tests some trivial cases.
+TEST(IsPrimeTest, Trivial) {
+  EXPECT_FALSE(IsPrime(0));
+  EXPECT_FALSE(IsPrime(1));
+  EXPECT_TRUE(IsPrime(2));
+  EXPECT_TRUE(IsPrime(3));
+}
+
+// Tests positive input.
+TEST(IsPrimeTest, Positive) {
+  EXPECT_FALSE(IsPrime(4));
+  EXPECT_TRUE(IsPrime(5));
+  EXPECT_FALSE(IsPrime(6));
+  EXPECT_TRUE(IsPrime(23));
+}
+}  // namespace
+
+// Step 3. Call RUN_ALL_TESTS() in main().
+//
+// We do this by linking in src/gtest_main.cc file, which consists of
+// a main() function which calls RUN_ALL_TESTS() for us.
+//
+// This runs all the tests you've defined, prints the result, and
+// returns 0 if successful, or 1 otherwise.
+//
+// Did you notice that we didn't register the tests?  The
+// RUN_ALL_TESTS() macro magically knows about all the tests we
+// defined.  Isn't this convenient?
diff --git a/build/_deps/googletest-src/googletest/samples/sample2.cc b/build/_deps/googletest-src/googletest/samples/sample2.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d8e8723965a1dc01ea7f656619b71fb5069849da
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample2.cc
@@ -0,0 +1,54 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// A sample program demonstrating using Google C++ testing framework.
+
+#include "sample2.h"
+
+#include <string.h>
+
+// Clones a 0-terminated C string, allocating memory using new.
+const char* MyString::CloneCString(const char* a_c_string) {
+  if (a_c_string == nullptr) return nullptr;
+
+  const size_t len = strlen(a_c_string);
+  char* const clone = new char[ len + 1 ];
+  memcpy(clone, a_c_string, len + 1);
+
+  return clone;
+}
+
+// Sets the 0-terminated C string this MyString object
+// represents.
+void MyString::Set(const char* a_c_string) {
+  // Makes sure this works when c_string == c_string_
+  const char* const temp = MyString::CloneCString(a_c_string);
+  delete[] c_string_;
+  c_string_ = temp;
+}
diff --git a/build/_deps/googletest-src/googletest/samples/sample2.h b/build/_deps/googletest-src/googletest/samples/sample2.h
new file mode 100644
index 0000000000000000000000000000000000000000..e9a5a7050b7d61c3417a962b5f6bb7c077625be1
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample2.h
@@ -0,0 +1,81 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// A sample program demonstrating using Google C++ testing framework.
+
+#ifndef GTEST_SAMPLES_SAMPLE2_H_
+#define GTEST_SAMPLES_SAMPLE2_H_
+
+#include <string.h>
+
+
+// A simple string class.
+class MyString {
+ private:
+  const char* c_string_;
+  const MyString& operator=(const MyString& rhs);
+
+ public:
+  // Clones a 0-terminated C string, allocating memory using new.
+  static const char* CloneCString(const char* a_c_string);
+
+  ////////////////////////////////////////////////////////////
+  //
+  // C'tors
+
+  // The default c'tor constructs a NULL string.
+  MyString() : c_string_(nullptr) {}
+
+  // Constructs a MyString by cloning a 0-terminated C string.
+  explicit MyString(const char* a_c_string) : c_string_(nullptr) {
+    Set(a_c_string);
+  }
+
+  // Copy c'tor
+  MyString(const MyString& string) : c_string_(nullptr) {
+    Set(string.c_string_);
+  }
+
+  ////////////////////////////////////////////////////////////
+  //
+  // D'tor.  MyString is intended to be a final class, so the d'tor
+  // doesn't need to be virtual.
+  ~MyString() { delete[] c_string_; }
+
+  // Gets the 0-terminated C string this MyString object represents.
+  const char* c_string() const { return c_string_; }
+
+  size_t Length() const { return c_string_ == nullptr ? 0 : strlen(c_string_); }
+
+  // Sets the 0-terminated C string this MyString object represents.
+  void Set(const char* c_string);
+};
+
+
+#endif  // GTEST_SAMPLES_SAMPLE2_H_
diff --git a/build/_deps/googletest-src/googletest/samples/sample2_unittest.cc b/build/_deps/googletest-src/googletest/samples/sample2_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..41e31c1767dee55cc5d5c0bea2df267c5d81176d
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample2_unittest.cc
@@ -0,0 +1,107 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// A sample program demonstrating using Google C++ testing framework.
+
+// This sample shows how to write a more complex unit test for a class
+// that has multiple member functions.
+//
+// Usually, it's a good idea to have one test for each method in your
+// class.  You don't have to do that exactly, but it helps to keep
+// your tests organized.  You may also throw in additional tests as
+// needed.
+
+#include "sample2.h"
+#include "gtest/gtest.h"
+namespace {
+// In this example, we test the MyString class (a simple string).
+
+// Tests the default c'tor.
+TEST(MyString, DefaultConstructor) {
+  const MyString s;
+
+  // Asserts that s.c_string() returns NULL.
+  //
+  // <TechnicalDetails>
+  //
+  // If we write NULL instead of
+  //
+  //   static_cast<const char *>(NULL)
+  //
+  // in this assertion, it will generate a warning on gcc 3.4.  The
+  // reason is that EXPECT_EQ needs to know the types of its
+  // arguments in order to print them when it fails.  Since NULL is
+  // #defined as 0, the compiler will use the formatter function for
+  // int to print it.  However, gcc thinks that NULL should be used as
+  // a pointer, not an int, and therefore complains.
+  //
+  // The root of the problem is C++'s lack of distinction between the
+  // integer number 0 and the null pointer constant.  Unfortunately,
+  // we have to live with this fact.
+  //
+  // </TechnicalDetails>
+  EXPECT_STREQ(nullptr, s.c_string());
+
+  EXPECT_EQ(0u, s.Length());
+}
+
+const char kHelloString[] = "Hello, world!";
+
+// Tests the c'tor that accepts a C string.
+TEST(MyString, ConstructorFromCString) {
+  const MyString s(kHelloString);
+  EXPECT_EQ(0, strcmp(s.c_string(), kHelloString));
+  EXPECT_EQ(sizeof(kHelloString)/sizeof(kHelloString[0]) - 1,
+            s.Length());
+}
+
+// Tests the copy c'tor.
+TEST(MyString, CopyConstructor) {
+  const MyString s1(kHelloString);
+  const MyString s2 = s1;
+  EXPECT_EQ(0, strcmp(s2.c_string(), kHelloString));
+}
+
+// Tests the Set method.
+TEST(MyString, Set) {
+  MyString s;
+
+  s.Set(kHelloString);
+  EXPECT_EQ(0, strcmp(s.c_string(), kHelloString));
+
+  // Set should work when the input pointer is the same as the one
+  // already in the MyString object.
+  s.Set(s.c_string());
+  EXPECT_EQ(0, strcmp(s.c_string(), kHelloString));
+
+  // Can we set the MyString to NULL?
+  s.Set(nullptr);
+  EXPECT_STREQ(nullptr, s.c_string());
+}
+}  // namespace
diff --git a/build/_deps/googletest-src/googletest/samples/sample3-inl.h b/build/_deps/googletest-src/googletest/samples/sample3-inl.h
new file mode 100644
index 0000000000000000000000000000000000000000..80ba6b923480da8fd9e6499821b7f24e5d1aadaf
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample3-inl.h
@@ -0,0 +1,172 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// A sample program demonstrating using Google C++ testing framework.
+
+#ifndef GTEST_SAMPLES_SAMPLE3_INL_H_
+#define GTEST_SAMPLES_SAMPLE3_INL_H_
+
+#include <stddef.h>
+
+
+// Queue is a simple queue implemented as a singled-linked list.
+//
+// The element type must support copy constructor.
+template <typename E>  // E is the element type
+class Queue;
+
+// QueueNode is a node in a Queue, which consists of an element of
+// type E and a pointer to the next node.
+template <typename E>  // E is the element type
+class QueueNode {
+  friend class Queue<E>;
+
+ public:
+  // Gets the element in this node.
+  const E& element() const { return element_; }
+
+  // Gets the next node in the queue.
+  QueueNode* next() { return next_; }
+  const QueueNode* next() const { return next_; }
+
+ private:
+  // Creates a node with a given element value.  The next pointer is
+  // set to NULL.
+  explicit QueueNode(const E& an_element)
+      : element_(an_element), next_(nullptr) {}
+
+  // We disable the default assignment operator and copy c'tor.
+  const QueueNode& operator = (const QueueNode&);
+  QueueNode(const QueueNode&);
+
+  E element_;
+  QueueNode* next_;
+};
+
+template <typename E>  // E is the element type.
+class Queue {
+ public:
+  // Creates an empty queue.
+  Queue() : head_(nullptr), last_(nullptr), size_(0) {}
+
+  // D'tor.  Clears the queue.
+  ~Queue() { Clear(); }
+
+  // Clears the queue.
+  void Clear() {
+    if (size_ > 0) {
+      // 1. Deletes every node.
+      QueueNode<E>* node = head_;
+      QueueNode<E>* next = node->next();
+      for (; ;) {
+        delete node;
+        node = next;
+        if (node == nullptr) break;
+        next = node->next();
+      }
+
+      // 2. Resets the member variables.
+      head_ = last_ = nullptr;
+      size_ = 0;
+    }
+  }
+
+  // Gets the number of elements.
+  size_t Size() const { return size_; }
+
+  // Gets the first element of the queue, or NULL if the queue is empty.
+  QueueNode<E>* Head() { return head_; }
+  const QueueNode<E>* Head() const { return head_; }
+
+  // Gets the last element of the queue, or NULL if the queue is empty.
+  QueueNode<E>* Last() { return last_; }
+  const QueueNode<E>* Last() const { return last_; }
+
+  // Adds an element to the end of the queue.  A copy of the element is
+  // created using the copy constructor, and then stored in the queue.
+  // Changes made to the element in the queue doesn't affect the source
+  // object, and vice versa.
+  void Enqueue(const E& element) {
+    QueueNode<E>* new_node = new QueueNode<E>(element);
+
+    if (size_ == 0) {
+      head_ = last_ = new_node;
+      size_ = 1;
+    } else {
+      last_->next_ = new_node;
+      last_ = new_node;
+      size_++;
+    }
+  }
+
+  // Removes the head of the queue and returns it.  Returns NULL if
+  // the queue is empty.
+  E* Dequeue() {
+    if (size_ == 0) {
+      return nullptr;
+    }
+
+    const QueueNode<E>* const old_head = head_;
+    head_ = head_->next_;
+    size_--;
+    if (size_ == 0) {
+      last_ = nullptr;
+    }
+
+    E* element = new E(old_head->element());
+    delete old_head;
+
+    return element;
+  }
+
+  // Applies a function/functor on each element of the queue, and
+  // returns the result in a new queue.  The original queue is not
+  // affected.
+  template <typename F>
+  Queue* Map(F function) const {
+    Queue* new_queue = new Queue();
+    for (const QueueNode<E>* node = head_; node != nullptr;
+         node = node->next_) {
+      new_queue->Enqueue(function(node->element()));
+    }
+
+    return new_queue;
+  }
+
+ private:
+  QueueNode<E>* head_;  // The first node of the queue.
+  QueueNode<E>* last_;  // The last node of the queue.
+  size_t size_;  // The number of elements in the queue.
+
+  // We disallow copying a queue.
+  Queue(const Queue&);
+  const Queue& operator = (const Queue&);
+};
+
+#endif  // GTEST_SAMPLES_SAMPLE3_INL_H_
diff --git a/build/_deps/googletest-src/googletest/samples/sample3_unittest.cc b/build/_deps/googletest-src/googletest/samples/sample3_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b19416d53c95f084efe51bf8ef23cc693f3c5d40
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample3_unittest.cc
@@ -0,0 +1,149 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// A sample program demonstrating using Google C++ testing framework.
+
+// In this example, we use a more advanced feature of Google Test called
+// test fixture.
+//
+// A test fixture is a place to hold objects and functions shared by
+// all tests in a test case.  Using a test fixture avoids duplicating
+// the test code necessary to initialize and cleanup those common
+// objects for each test.  It is also useful for defining sub-routines
+// that your tests need to invoke a lot.
+//
+// <TechnicalDetails>
+//
+// The tests share the test fixture in the sense of code sharing, not
+// data sharing.  Each test is given its own fresh copy of the
+// fixture.  You cannot expect the data modified by one test to be
+// passed on to another test, which is a bad idea.
+//
+// The reason for this design is that tests should be independent and
+// repeatable.  In particular, a test should not fail as the result of
+// another test's failure.  If one test depends on info produced by
+// another test, then the two tests should really be one big test.
+//
+// The macros for indicating the success/failure of a test
+// (EXPECT_TRUE, FAIL, etc) need to know what the current test is
+// (when Google Test prints the test result, it tells you which test
+// each failure belongs to).  Technically, these macros invoke a
+// member function of the Test class.  Therefore, you cannot use them
+// in a global function.  That's why you should put test sub-routines
+// in a test fixture.
+//
+// </TechnicalDetails>
+
+#include "sample3-inl.h"
+#include "gtest/gtest.h"
+namespace {
+// To use a test fixture, derive a class from testing::Test.
+class QueueTestSmpl3 : public testing::Test {
+ protected:  // You should make the members protected s.t. they can be
+             // accessed from sub-classes.
+
+  // virtual void SetUp() will be called before each test is run.  You
+  // should define it if you need to initialize the variables.
+  // Otherwise, this can be skipped.
+  void SetUp() override {
+    q1_.Enqueue(1);
+    q2_.Enqueue(2);
+    q2_.Enqueue(3);
+  }
+
+  // virtual void TearDown() will be called after each test is run.
+  // You should define it if there is cleanup work to do.  Otherwise,
+  // you don't have to provide it.
+  //
+  // virtual void TearDown() {
+  // }
+
+  // A helper function that some test uses.
+  static int Double(int n) {
+    return 2*n;
+  }
+
+  // A helper function for testing Queue::Map().
+  void MapTester(const Queue<int> * q) {
+    // Creates a new queue, where each element is twice as big as the
+    // corresponding one in q.
+    const Queue<int> * const new_q = q->Map(Double);
+
+    // Verifies that the new queue has the same size as q.
+    ASSERT_EQ(q->Size(), new_q->Size());
+
+    // Verifies the relationship between the elements of the two queues.
+    for (const QueueNode<int>*n1 = q->Head(), *n2 = new_q->Head();
+         n1 != nullptr; n1 = n1->next(), n2 = n2->next()) {
+      EXPECT_EQ(2 * n1->element(), n2->element());
+    }
+
+    delete new_q;
+  }
+
+  // Declares the variables your tests want to use.
+  Queue<int> q0_;
+  Queue<int> q1_;
+  Queue<int> q2_;
+};
+
+// When you have a test fixture, you define a test using TEST_F
+// instead of TEST.
+
+// Tests the default c'tor.
+TEST_F(QueueTestSmpl3, DefaultConstructor) {
+  // You can access data in the test fixture here.
+  EXPECT_EQ(0u, q0_.Size());
+}
+
+// Tests Dequeue().
+TEST_F(QueueTestSmpl3, Dequeue) {
+  int * n = q0_.Dequeue();
+  EXPECT_TRUE(n == nullptr);
+
+  n = q1_.Dequeue();
+  ASSERT_TRUE(n != nullptr);
+  EXPECT_EQ(1, *n);
+  EXPECT_EQ(0u, q1_.Size());
+  delete n;
+
+  n = q2_.Dequeue();
+  ASSERT_TRUE(n != nullptr);
+  EXPECT_EQ(2, *n);
+  EXPECT_EQ(1u, q2_.Size());
+  delete n;
+}
+
+// Tests the Queue::Map() function.
+TEST_F(QueueTestSmpl3, Map) {
+  MapTester(&q0_);
+  MapTester(&q1_);
+  MapTester(&q2_);
+}
+}  // namespace
diff --git a/build/_deps/googletest-src/googletest/samples/sample4.cc b/build/_deps/googletest-src/googletest/samples/sample4.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b0ee6093b4a250cf11936ccc8208a612291b8140
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample4.cc
@@ -0,0 +1,54 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// A sample program demonstrating using Google C++ testing framework.
+
+#include <stdio.h>
+
+#include "sample4.h"
+
+// Returns the current counter value, and increments it.
+int Counter::Increment() {
+  return counter_++;
+}
+
+// Returns the current counter value, and decrements it.
+// counter can not be less than 0, return 0 in this case
+int Counter::Decrement() {
+  if (counter_ == 0) {
+    return counter_;
+  } else  {
+    return counter_--;
+  }
+}
+
+// Prints the current counter value to STDOUT.
+void Counter::Print() const {
+  printf("%d", counter_);
+}
diff --git a/build/_deps/googletest-src/googletest/samples/sample4.h b/build/_deps/googletest-src/googletest/samples/sample4.h
new file mode 100644
index 0000000000000000000000000000000000000000..e256f4064fe91a7f01a94550d32c3bb11b0a4fff
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample4.h
@@ -0,0 +1,53 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// A sample program demonstrating using Google C++ testing framework.
+#ifndef GTEST_SAMPLES_SAMPLE4_H_
+#define GTEST_SAMPLES_SAMPLE4_H_
+
+// A simple monotonic counter.
+class Counter {
+ private:
+  int counter_;
+
+ public:
+  // Creates a counter that starts at 0.
+  Counter() : counter_(0) {}
+
+  // Returns the current counter value, and increments it.
+  int Increment();
+
+  // Returns the current counter value, and decrements it.
+  int Decrement();
+
+  // Prints the current counter value to STDOUT.
+  void Print() const;
+};
+
+#endif  // GTEST_SAMPLES_SAMPLE4_H_
diff --git a/build/_deps/googletest-src/googletest/samples/sample4_unittest.cc b/build/_deps/googletest-src/googletest/samples/sample4_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d5144c0d00f5c7600693ea025802c0d7d5250d2e
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample4_unittest.cc
@@ -0,0 +1,53 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include "sample4.h"
+#include "gtest/gtest.h"
+
+namespace {
+// Tests the Increment() method.
+
+TEST(Counter, Increment) {
+  Counter c;
+
+  // Test that counter 0 returns 0
+  EXPECT_EQ(0, c.Decrement());
+
+  // EXPECT_EQ() evaluates its arguments exactly once, so they
+  // can have side effects.
+
+  EXPECT_EQ(0, c.Increment());
+  EXPECT_EQ(1, c.Increment());
+  EXPECT_EQ(2, c.Increment());
+
+  EXPECT_EQ(3, c.Decrement());
+}
+
+}  // namespace
diff --git a/build/_deps/googletest-src/googletest/samples/sample5_unittest.cc b/build/_deps/googletest-src/googletest/samples/sample5_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0a21dd2157707fb32c459248b0c5341609ec0614
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample5_unittest.cc
@@ -0,0 +1,196 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// This sample teaches how to reuse a test fixture in multiple test
+// cases by deriving sub-fixtures from it.
+//
+// When you define a test fixture, you specify the name of the test
+// case that will use this fixture.  Therefore, a test fixture can
+// be used by only one test case.
+//
+// Sometimes, more than one test cases may want to use the same or
+// slightly different test fixtures.  For example, you may want to
+// make sure that all tests for a GUI library don't leak important
+// system resources like fonts and brushes.  In Google Test, you do
+// this by putting the shared logic in a super (as in "super class")
+// test fixture, and then have each test case use a fixture derived
+// from this super fixture.
+
+#include <limits.h>
+#include <time.h>
+#include "gtest/gtest.h"
+#include "sample1.h"
+#include "sample3-inl.h"
+namespace {
+// In this sample, we want to ensure that every test finishes within
+// ~5 seconds.  If a test takes longer to run, we consider it a
+// failure.
+//
+// We put the code for timing a test in a test fixture called
+// "QuickTest".  QuickTest is intended to be the super fixture that
+// other fixtures derive from, therefore there is no test case with
+// the name "QuickTest".  This is OK.
+//
+// Later, we will derive multiple test fixtures from QuickTest.
+class QuickTest : public testing::Test {
+ protected:
+  // Remember that SetUp() is run immediately before a test starts.
+  // This is a good place to record the start time.
+  void SetUp() override { start_time_ = time(nullptr); }
+
+  // TearDown() is invoked immediately after a test finishes.  Here we
+  // check if the test was too slow.
+  void TearDown() override {
+    // Gets the time when the test finishes
+    const time_t end_time = time(nullptr);
+
+    // Asserts that the test took no more than ~5 seconds.  Did you
+    // know that you can use assertions in SetUp() and TearDown() as
+    // well?
+    EXPECT_TRUE(end_time - start_time_ <= 5) << "The test took too long.";
+  }
+
+  // The UTC time (in seconds) when the test starts
+  time_t start_time_;
+};
+
+
+// We derive a fixture named IntegerFunctionTest from the QuickTest
+// fixture.  All tests using this fixture will be automatically
+// required to be quick.
+class IntegerFunctionTest : public QuickTest {
+  // We don't need any more logic than already in the QuickTest fixture.
+  // Therefore the body is empty.
+};
+
+
+// Now we can write tests in the IntegerFunctionTest test case.
+
+// Tests Factorial()
+TEST_F(IntegerFunctionTest, Factorial) {
+  // Tests factorial of negative numbers.
+  EXPECT_EQ(1, Factorial(-5));
+  EXPECT_EQ(1, Factorial(-1));
+  EXPECT_GT(Factorial(-10), 0);
+
+  // Tests factorial of 0.
+  EXPECT_EQ(1, Factorial(0));
+
+  // Tests factorial of positive numbers.
+  EXPECT_EQ(1, Factorial(1));
+  EXPECT_EQ(2, Factorial(2));
+  EXPECT_EQ(6, Factorial(3));
+  EXPECT_EQ(40320, Factorial(8));
+}
+
+
+// Tests IsPrime()
+TEST_F(IntegerFunctionTest, IsPrime) {
+  // Tests negative input.
+  EXPECT_FALSE(IsPrime(-1));
+  EXPECT_FALSE(IsPrime(-2));
+  EXPECT_FALSE(IsPrime(INT_MIN));
+
+  // Tests some trivial cases.
+  EXPECT_FALSE(IsPrime(0));
+  EXPECT_FALSE(IsPrime(1));
+  EXPECT_TRUE(IsPrime(2));
+  EXPECT_TRUE(IsPrime(3));
+
+  // Tests positive input.
+  EXPECT_FALSE(IsPrime(4));
+  EXPECT_TRUE(IsPrime(5));
+  EXPECT_FALSE(IsPrime(6));
+  EXPECT_TRUE(IsPrime(23));
+}
+
+
+// The next test case (named "QueueTest") also needs to be quick, so
+// we derive another fixture from QuickTest.
+//
+// The QueueTest test fixture has some logic and shared objects in
+// addition to what's in QuickTest already.  We define the additional
+// stuff inside the body of the test fixture, as usual.
+class QueueTest : public QuickTest {
+ protected:
+  void SetUp() override {
+    // First, we need to set up the super fixture (QuickTest).
+    QuickTest::SetUp();
+
+    // Second, some additional setup for this fixture.
+    q1_.Enqueue(1);
+    q2_.Enqueue(2);
+    q2_.Enqueue(3);
+  }
+
+  // By default, TearDown() inherits the behavior of
+  // QuickTest::TearDown().  As we have no additional cleaning work
+  // for QueueTest, we omit it here.
+  //
+  // virtual void TearDown() {
+  //   QuickTest::TearDown();
+  // }
+
+  Queue<int> q0_;
+  Queue<int> q1_;
+  Queue<int> q2_;
+};
+
+
+// Now, let's write tests using the QueueTest fixture.
+
+// Tests the default constructor.
+TEST_F(QueueTest, DefaultConstructor) {
+  EXPECT_EQ(0u, q0_.Size());
+}
+
+// Tests Dequeue().
+TEST_F(QueueTest, Dequeue) {
+  int* n = q0_.Dequeue();
+  EXPECT_TRUE(n == nullptr);
+
+  n = q1_.Dequeue();
+  EXPECT_TRUE(n != nullptr);
+  EXPECT_EQ(1, *n);
+  EXPECT_EQ(0u, q1_.Size());
+  delete n;
+
+  n = q2_.Dequeue();
+  EXPECT_TRUE(n != nullptr);
+  EXPECT_EQ(2, *n);
+  EXPECT_EQ(1u, q2_.Size());
+  delete n;
+}
+}  // namespace
+// If necessary, you can derive further test fixtures from a derived
+// fixture itself.  For example, you can derive another fixture from
+// QueueTest.  Google Test imposes no limit on how deep the hierarchy
+// can be.  In practice, however, you probably don't want it to be too
+// deep as to be confusing.
diff --git a/build/_deps/googletest-src/googletest/samples/sample6_unittest.cc b/build/_deps/googletest-src/googletest/samples/sample6_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0266e27e589e069ad718c2e38cb9b4c21732f737
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample6_unittest.cc
@@ -0,0 +1,224 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// This sample shows how to test common properties of multiple
+// implementations of the same interface (aka interface tests).
+
+// The interface and its implementations are in this header.
+#include "prime_tables.h"
+
+#include "gtest/gtest.h"
+namespace {
+// First, we define some factory functions for creating instances of
+// the implementations.  You may be able to skip this step if all your
+// implementations can be constructed the same way.
+
+template <class T>
+PrimeTable* CreatePrimeTable();
+
+template <>
+PrimeTable* CreatePrimeTable<OnTheFlyPrimeTable>() {
+  return new OnTheFlyPrimeTable;
+}
+
+template <>
+PrimeTable* CreatePrimeTable<PreCalculatedPrimeTable>() {
+  return new PreCalculatedPrimeTable(10000);
+}
+
+// Then we define a test fixture class template.
+template <class T>
+class PrimeTableTest : public testing::Test {
+ protected:
+  // The ctor calls the factory function to create a prime table
+  // implemented by T.
+  PrimeTableTest() : table_(CreatePrimeTable<T>()) {}
+
+  ~PrimeTableTest() override { delete table_; }
+
+  // Note that we test an implementation via the base interface
+  // instead of the actual implementation class.  This is important
+  // for keeping the tests close to the real world scenario, where the
+  // implementation is invoked via the base interface.  It avoids
+  // got-yas where the implementation class has a method that shadows
+  // a method with the same name (but slightly different argument
+  // types) in the base interface, for example.
+  PrimeTable* const table_;
+};
+
+#if GTEST_HAS_TYPED_TEST
+
+using testing::Types;
+
+// Google Test offers two ways for reusing tests for different types.
+// The first is called "typed tests".  You should use it if you
+// already know *all* the types you are gonna exercise when you write
+// the tests.
+
+// To write a typed test case, first use
+//
+//   TYPED_TEST_SUITE(TestCaseName, TypeList);
+//
+// to declare it and specify the type parameters.  As with TEST_F,
+// TestCaseName must match the test fixture name.
+
+// The list of types we want to test.
+typedef Types<OnTheFlyPrimeTable, PreCalculatedPrimeTable> Implementations;
+
+TYPED_TEST_SUITE(PrimeTableTest, Implementations);
+
+// Then use TYPED_TEST(TestCaseName, TestName) to define a typed test,
+// similar to TEST_F.
+TYPED_TEST(PrimeTableTest, ReturnsFalseForNonPrimes) {
+  // Inside the test body, you can refer to the type parameter by
+  // TypeParam, and refer to the fixture class by TestFixture.  We
+  // don't need them in this example.
+
+  // Since we are in the template world, C++ requires explicitly
+  // writing 'this->' when referring to members of the fixture class.
+  // This is something you have to learn to live with.
+  EXPECT_FALSE(this->table_->IsPrime(-5));
+  EXPECT_FALSE(this->table_->IsPrime(0));
+  EXPECT_FALSE(this->table_->IsPrime(1));
+  EXPECT_FALSE(this->table_->IsPrime(4));
+  EXPECT_FALSE(this->table_->IsPrime(6));
+  EXPECT_FALSE(this->table_->IsPrime(100));
+}
+
+TYPED_TEST(PrimeTableTest, ReturnsTrueForPrimes) {
+  EXPECT_TRUE(this->table_->IsPrime(2));
+  EXPECT_TRUE(this->table_->IsPrime(3));
+  EXPECT_TRUE(this->table_->IsPrime(5));
+  EXPECT_TRUE(this->table_->IsPrime(7));
+  EXPECT_TRUE(this->table_->IsPrime(11));
+  EXPECT_TRUE(this->table_->IsPrime(131));
+}
+
+TYPED_TEST(PrimeTableTest, CanGetNextPrime) {
+  EXPECT_EQ(2, this->table_->GetNextPrime(0));
+  EXPECT_EQ(3, this->table_->GetNextPrime(2));
+  EXPECT_EQ(5, this->table_->GetNextPrime(3));
+  EXPECT_EQ(7, this->table_->GetNextPrime(5));
+  EXPECT_EQ(11, this->table_->GetNextPrime(7));
+  EXPECT_EQ(131, this->table_->GetNextPrime(128));
+}
+
+// That's it!  Google Test will repeat each TYPED_TEST for each type
+// in the type list specified in TYPED_TEST_SUITE.  Sit back and be
+// happy that you don't have to define them multiple times.
+
+#endif  // GTEST_HAS_TYPED_TEST
+
+#if GTEST_HAS_TYPED_TEST_P
+
+using testing::Types;
+
+// Sometimes, however, you don't yet know all the types that you want
+// to test when you write the tests.  For example, if you are the
+// author of an interface and expect other people to implement it, you
+// might want to write a set of tests to make sure each implementation
+// conforms to some basic requirements, but you don't know what
+// implementations will be written in the future.
+//
+// How can you write the tests without committing to the type
+// parameters?  That's what "type-parameterized tests" can do for you.
+// It is a bit more involved than typed tests, but in return you get a
+// test pattern that can be reused in many contexts, which is a big
+// win.  Here's how you do it:
+
+// First, define a test fixture class template.  Here we just reuse
+// the PrimeTableTest fixture defined earlier:
+
+template <class T>
+class PrimeTableTest2 : public PrimeTableTest<T> {
+};
+
+// Then, declare the test case.  The argument is the name of the test
+// fixture, and also the name of the test case (as usual).  The _P
+// suffix is for "parameterized" or "pattern".
+TYPED_TEST_SUITE_P(PrimeTableTest2);
+
+// Next, use TYPED_TEST_P(TestCaseName, TestName) to define a test,
+// similar to what you do with TEST_F.
+TYPED_TEST_P(PrimeTableTest2, ReturnsFalseForNonPrimes) {
+  EXPECT_FALSE(this->table_->IsPrime(-5));
+  EXPECT_FALSE(this->table_->IsPrime(0));
+  EXPECT_FALSE(this->table_->IsPrime(1));
+  EXPECT_FALSE(this->table_->IsPrime(4));
+  EXPECT_FALSE(this->table_->IsPrime(6));
+  EXPECT_FALSE(this->table_->IsPrime(100));
+}
+
+TYPED_TEST_P(PrimeTableTest2, ReturnsTrueForPrimes) {
+  EXPECT_TRUE(this->table_->IsPrime(2));
+  EXPECT_TRUE(this->table_->IsPrime(3));
+  EXPECT_TRUE(this->table_->IsPrime(5));
+  EXPECT_TRUE(this->table_->IsPrime(7));
+  EXPECT_TRUE(this->table_->IsPrime(11));
+  EXPECT_TRUE(this->table_->IsPrime(131));
+}
+
+TYPED_TEST_P(PrimeTableTest2, CanGetNextPrime) {
+  EXPECT_EQ(2, this->table_->GetNextPrime(0));
+  EXPECT_EQ(3, this->table_->GetNextPrime(2));
+  EXPECT_EQ(5, this->table_->GetNextPrime(3));
+  EXPECT_EQ(7, this->table_->GetNextPrime(5));
+  EXPECT_EQ(11, this->table_->GetNextPrime(7));
+  EXPECT_EQ(131, this->table_->GetNextPrime(128));
+}
+
+// Type-parameterized tests involve one extra step: you have to
+// enumerate the tests you defined:
+REGISTER_TYPED_TEST_SUITE_P(
+    PrimeTableTest2,  // The first argument is the test case name.
+    // The rest of the arguments are the test names.
+    ReturnsFalseForNonPrimes, ReturnsTrueForPrimes, CanGetNextPrime);
+
+// At this point the test pattern is done.  However, you don't have
+// any real test yet as you haven't said which types you want to run
+// the tests with.
+
+// To turn the abstract test pattern into real tests, you instantiate
+// it with a list of types.  Usually the test pattern will be defined
+// in a .h file, and anyone can #include and instantiate it.  You can
+// even instantiate it more than once in the same program.  To tell
+// different instances apart, you give each of them a name, which will
+// become part of the test case name and can be used in test filters.
+
+// The list of types we want to test.  Note that it doesn't have to be
+// defined at the time we write the TYPED_TEST_P()s.
+typedef Types<OnTheFlyPrimeTable, PreCalculatedPrimeTable>
+    PrimeTableImplementations;
+INSTANTIATE_TYPED_TEST_SUITE_P(OnTheFlyAndPreCalculated,    // Instance name
+                               PrimeTableTest2,             // Test case name
+                               PrimeTableImplementations);  // Type list
+
+#endif  // GTEST_HAS_TYPED_TEST_P
+}  // namespace
diff --git a/build/_deps/googletest-src/googletest/samples/sample7_unittest.cc b/build/_deps/googletest-src/googletest/samples/sample7_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e0efc29e4a2a977e1a50a45bb375243c968547d7
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample7_unittest.cc
@@ -0,0 +1,117 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// This sample shows how to test common properties of multiple
+// implementations of an interface (aka interface tests) using
+// value-parameterized tests. Each test in the test case has
+// a parameter that is an interface pointer to an implementation
+// tested.
+
+// The interface and its implementations are in this header.
+#include "prime_tables.h"
+
+#include "gtest/gtest.h"
+namespace {
+
+using ::testing::TestWithParam;
+using ::testing::Values;
+
+// As a general rule, to prevent a test from affecting the tests that come
+// after it, you should create and destroy the tested objects for each test
+// instead of reusing them.  In this sample we will define a simple factory
+// function for PrimeTable objects.  We will instantiate objects in test's
+// SetUp() method and delete them in TearDown() method.
+typedef PrimeTable* CreatePrimeTableFunc();
+
+PrimeTable* CreateOnTheFlyPrimeTable() {
+  return new OnTheFlyPrimeTable();
+}
+
+template <size_t max_precalculated>
+PrimeTable* CreatePreCalculatedPrimeTable() {
+  return new PreCalculatedPrimeTable(max_precalculated);
+}
+
+// Inside the test body, fixture constructor, SetUp(), and TearDown() you
+// can refer to the test parameter by GetParam().  In this case, the test
+// parameter is a factory function which we call in fixture's SetUp() to
+// create and store an instance of PrimeTable.
+class PrimeTableTestSmpl7 : public TestWithParam<CreatePrimeTableFunc*> {
+ public:
+  ~PrimeTableTestSmpl7() override { delete table_; }
+  void SetUp() override { table_ = (*GetParam())(); }
+  void TearDown() override {
+    delete table_;
+    table_ = nullptr;
+  }
+
+ protected:
+  PrimeTable* table_;
+};
+
+TEST_P(PrimeTableTestSmpl7, ReturnsFalseForNonPrimes) {
+  EXPECT_FALSE(table_->IsPrime(-5));
+  EXPECT_FALSE(table_->IsPrime(0));
+  EXPECT_FALSE(table_->IsPrime(1));
+  EXPECT_FALSE(table_->IsPrime(4));
+  EXPECT_FALSE(table_->IsPrime(6));
+  EXPECT_FALSE(table_->IsPrime(100));
+}
+
+TEST_P(PrimeTableTestSmpl7, ReturnsTrueForPrimes) {
+  EXPECT_TRUE(table_->IsPrime(2));
+  EXPECT_TRUE(table_->IsPrime(3));
+  EXPECT_TRUE(table_->IsPrime(5));
+  EXPECT_TRUE(table_->IsPrime(7));
+  EXPECT_TRUE(table_->IsPrime(11));
+  EXPECT_TRUE(table_->IsPrime(131));
+}
+
+TEST_P(PrimeTableTestSmpl7, CanGetNextPrime) {
+  EXPECT_EQ(2, table_->GetNextPrime(0));
+  EXPECT_EQ(3, table_->GetNextPrime(2));
+  EXPECT_EQ(5, table_->GetNextPrime(3));
+  EXPECT_EQ(7, table_->GetNextPrime(5));
+  EXPECT_EQ(11, table_->GetNextPrime(7));
+  EXPECT_EQ(131, table_->GetNextPrime(128));
+}
+
+// In order to run value-parameterized tests, you need to instantiate them,
+// or bind them to a list of values which will be used as test parameters.
+// You can instantiate them in a different translation module, or even
+// instantiate them several times.
+//
+// Here, we instantiate our tests with a list of two PrimeTable object
+// factory functions:
+INSTANTIATE_TEST_SUITE_P(OnTheFlyAndPreCalculated, PrimeTableTestSmpl7,
+                         Values(&CreateOnTheFlyPrimeTable,
+                                &CreatePreCalculatedPrimeTable<1000>));
+
+}  // namespace
diff --git a/build/_deps/googletest-src/googletest/samples/sample8_unittest.cc b/build/_deps/googletest-src/googletest/samples/sample8_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..10488b0ea4509a6591f06b05ac5ae14433b652ee
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample8_unittest.cc
@@ -0,0 +1,154 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// This sample shows how to test code relying on some global flag variables.
+// Combine() helps with generating all possible combinations of such flags,
+// and each test is given one combination as a parameter.
+
+// Use class definitions to test from this header.
+#include "prime_tables.h"
+
+#include "gtest/gtest.h"
+namespace {
+
+// Suppose we want to introduce a new, improved implementation of PrimeTable
+// which combines speed of PrecalcPrimeTable and versatility of
+// OnTheFlyPrimeTable (see prime_tables.h). Inside it instantiates both
+// PrecalcPrimeTable and OnTheFlyPrimeTable and uses the one that is more
+// appropriate under the circumstances. But in low memory conditions, it can be
+// told to instantiate without PrecalcPrimeTable instance at all and use only
+// OnTheFlyPrimeTable.
+class HybridPrimeTable : public PrimeTable {
+ public:
+  HybridPrimeTable(bool force_on_the_fly, int max_precalculated)
+      : on_the_fly_impl_(new OnTheFlyPrimeTable),
+        precalc_impl_(force_on_the_fly
+                          ? nullptr
+                          : new PreCalculatedPrimeTable(max_precalculated)),
+        max_precalculated_(max_precalculated) {}
+  ~HybridPrimeTable() override {
+    delete on_the_fly_impl_;
+    delete precalc_impl_;
+  }
+
+  bool IsPrime(int n) const override {
+    if (precalc_impl_ != nullptr && n < max_precalculated_)
+      return precalc_impl_->IsPrime(n);
+    else
+      return on_the_fly_impl_->IsPrime(n);
+  }
+
+  int GetNextPrime(int p) const override {
+    int next_prime = -1;
+    if (precalc_impl_ != nullptr && p < max_precalculated_)
+      next_prime = precalc_impl_->GetNextPrime(p);
+
+    return next_prime != -1 ? next_prime : on_the_fly_impl_->GetNextPrime(p);
+  }
+
+ private:
+  OnTheFlyPrimeTable* on_the_fly_impl_;
+  PreCalculatedPrimeTable* precalc_impl_;
+  int max_precalculated_;
+};
+
+using ::testing::TestWithParam;
+using ::testing::Bool;
+using ::testing::Values;
+using ::testing::Combine;
+
+// To test all code paths for HybridPrimeTable we must test it with numbers
+// both within and outside PreCalculatedPrimeTable's capacity and also with
+// PreCalculatedPrimeTable disabled. We do this by defining fixture which will
+// accept different combinations of parameters for instantiating a
+// HybridPrimeTable instance.
+class PrimeTableTest : public TestWithParam< ::std::tuple<bool, int> > {
+ protected:
+  void SetUp() override {
+    bool force_on_the_fly;
+    int max_precalculated;
+    std::tie(force_on_the_fly, max_precalculated) = GetParam();
+    table_ = new HybridPrimeTable(force_on_the_fly, max_precalculated);
+  }
+  void TearDown() override {
+    delete table_;
+    table_ = nullptr;
+  }
+  HybridPrimeTable* table_;
+};
+
+TEST_P(PrimeTableTest, ReturnsFalseForNonPrimes) {
+  // Inside the test body, you can refer to the test parameter by GetParam().
+  // In this case, the test parameter is a PrimeTable interface pointer which
+  // we can use directly.
+  // Please note that you can also save it in the fixture's SetUp() method
+  // or constructor and use saved copy in the tests.
+
+  EXPECT_FALSE(table_->IsPrime(-5));
+  EXPECT_FALSE(table_->IsPrime(0));
+  EXPECT_FALSE(table_->IsPrime(1));
+  EXPECT_FALSE(table_->IsPrime(4));
+  EXPECT_FALSE(table_->IsPrime(6));
+  EXPECT_FALSE(table_->IsPrime(100));
+}
+
+TEST_P(PrimeTableTest, ReturnsTrueForPrimes) {
+  EXPECT_TRUE(table_->IsPrime(2));
+  EXPECT_TRUE(table_->IsPrime(3));
+  EXPECT_TRUE(table_->IsPrime(5));
+  EXPECT_TRUE(table_->IsPrime(7));
+  EXPECT_TRUE(table_->IsPrime(11));
+  EXPECT_TRUE(table_->IsPrime(131));
+}
+
+TEST_P(PrimeTableTest, CanGetNextPrime) {
+  EXPECT_EQ(2, table_->GetNextPrime(0));
+  EXPECT_EQ(3, table_->GetNextPrime(2));
+  EXPECT_EQ(5, table_->GetNextPrime(3));
+  EXPECT_EQ(7, table_->GetNextPrime(5));
+  EXPECT_EQ(11, table_->GetNextPrime(7));
+  EXPECT_EQ(131, table_->GetNextPrime(128));
+}
+
+// In order to run value-parameterized tests, you need to instantiate them,
+// or bind them to a list of values which will be used as test parameters.
+// You can instantiate them in a different translation module, or even
+// instantiate them several times.
+//
+// Here, we instantiate our tests with a list of parameters. We must combine
+// all variations of the boolean flag suppressing PrecalcPrimeTable and some
+// meaningful values for tests. We choose a small value (1), and a value that
+// will put some of the tested numbers beyond the capability of the
+// PrecalcPrimeTable instance and some inside it (10). Combine will produce all
+// possible combinations.
+INSTANTIATE_TEST_SUITE_P(MeaningfulTestParameters, PrimeTableTest,
+                         Combine(Bool(), Values(1, 10)));
+
+}  // namespace
diff --git a/build/_deps/googletest-src/googletest/samples/sample9_unittest.cc b/build/_deps/googletest-src/googletest/samples/sample9_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e502d08d73e7d70bede86cbd711754cd09de841c
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/samples/sample9_unittest.cc
@@ -0,0 +1,156 @@
+// Copyright 2009 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// This sample shows how to use Google Test listener API to implement
+// an alternative console output and how to use the UnitTest reflection API
+// to enumerate test cases and tests and to inspect their results.
+
+#include <stdio.h>
+
+#include "gtest/gtest.h"
+
+using ::testing::EmptyTestEventListener;
+using ::testing::InitGoogleTest;
+using ::testing::Test;
+using ::testing::TestCase;
+using ::testing::TestEventListeners;
+using ::testing::TestInfo;
+using ::testing::TestPartResult;
+using ::testing::UnitTest;
+namespace {
+// Provides alternative output mode which produces minimal amount of
+// information about tests.
+class TersePrinter : public EmptyTestEventListener {
+ private:
+  // Called before any test activity starts.
+  void OnTestProgramStart(const UnitTest& /* unit_test */) override {}
+
+  // Called after all test activities have ended.
+  void OnTestProgramEnd(const UnitTest& unit_test) override {
+    fprintf(stdout, "TEST %s\n", unit_test.Passed() ? "PASSED" : "FAILED");
+    fflush(stdout);
+  }
+
+  // Called before a test starts.
+  void OnTestStart(const TestInfo& test_info) override {
+    fprintf(stdout,
+            "*** Test %s.%s starting.\n",
+            test_info.test_case_name(),
+            test_info.name());
+    fflush(stdout);
+  }
+
+  // Called after a failed assertion or a SUCCEED() invocation.
+  void OnTestPartResult(const TestPartResult& test_part_result) override {
+    fprintf(stdout,
+            "%s in %s:%d\n%s\n",
+            test_part_result.failed() ? "*** Failure" : "Success",
+            test_part_result.file_name(),
+            test_part_result.line_number(),
+            test_part_result.summary());
+    fflush(stdout);
+  }
+
+  // Called after a test ends.
+  void OnTestEnd(const TestInfo& test_info) override {
+    fprintf(stdout,
+            "*** Test %s.%s ending.\n",
+            test_info.test_case_name(),
+            test_info.name());
+    fflush(stdout);
+  }
+};  // class TersePrinter
+
+TEST(CustomOutputTest, PrintsMessage) {
+  printf("Printing something from the test body...\n");
+}
+
+TEST(CustomOutputTest, Succeeds) {
+  SUCCEED() << "SUCCEED() has been invoked from here";
+}
+
+TEST(CustomOutputTest, Fails) {
+  EXPECT_EQ(1, 2)
+      << "This test fails in order to demonstrate alternative failure messages";
+}
+}  // namespace
+
+int main(int argc, char **argv) {
+  InitGoogleTest(&argc, argv);
+
+  bool terse_output = false;
+  if (argc > 1 && strcmp(argv[1], "--terse_output") == 0 )
+    terse_output = true;
+  else
+    printf("%s\n", "Run this program with --terse_output to change the way "
+           "it prints its output.");
+
+  UnitTest& unit_test = *UnitTest::GetInstance();
+
+  // If we are given the --terse_output command line flag, suppresses the
+  // standard output and attaches own result printer.
+  if (terse_output) {
+    TestEventListeners& listeners = unit_test.listeners();
+
+    // Removes the default console output listener from the list so it will
+    // not receive events from Google Test and won't print any output. Since
+    // this operation transfers ownership of the listener to the caller we
+    // have to delete it as well.
+    delete listeners.Release(listeners.default_result_printer());
+
+    // Adds the custom output listener to the list. It will now receive
+    // events from Google Test and print the alternative output. We don't
+    // have to worry about deleting it since Google Test assumes ownership
+    // over it after adding it to the list.
+    listeners.Append(new TersePrinter);
+  }
+  int ret_val = RUN_ALL_TESTS();
+
+  // This is an example of using the UnitTest reflection API to inspect test
+  // results. Here we discount failures from the tests we expected to fail.
+  int unexpectedly_failed_tests = 0;
+  for (int i = 0; i < unit_test.total_test_suite_count(); ++i) {
+    const testing::TestSuite& test_suite = *unit_test.GetTestSuite(i);
+    for (int j = 0; j < test_suite.total_test_count(); ++j) {
+      const TestInfo& test_info = *test_suite.GetTestInfo(j);
+      // Counts failed tests that were not meant to fail (those without
+      // 'Fails' in the name).
+      if (test_info.result()->Failed() &&
+          strcmp(test_info.name(), "Fails") != 0) {
+        unexpectedly_failed_tests++;
+      }
+    }
+  }
+
+  // Test that were meant to fail should not affect the test program outcome.
+  if (unexpectedly_failed_tests == 0)
+    ret_val = 0;
+
+  return ret_val;
+}
diff --git a/build/_deps/googletest-src/googletest/scripts/common.py b/build/_deps/googletest-src/googletest/scripts/common.py
new file mode 100644
index 0000000000000000000000000000000000000000..3c0347a75bdff3188097745015a5803764ad741c
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/scripts/common.py
@@ -0,0 +1,83 @@
+# Copyright 2013 Google Inc. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Shared utilities for writing scripts for Google Test/Mock."""
+
+__author__ = 'wan@google.com (Zhanyong Wan)'
+
+
+import os
+import re
+
+
+# Matches the line from 'svn info .' output that describes what SVN
+# path the current local directory corresponds to.  For example, in
+# a googletest SVN workspace's trunk/test directory, the output will be:
+#
+# URL: https://googletest.googlecode.com/svn/trunk/test
+_SVN_INFO_URL_RE = re.compile(r'^URL: https://(\w+)\.googlecode\.com/svn(.*)')
+
+
+def GetCommandOutput(command):
+  """Runs the shell command and returns its stdout as a list of lines."""
+
+  f = os.popen(command, 'r')
+  lines = [line.strip() for line in f.readlines()]
+  f.close()
+  return lines
+
+
+def GetSvnInfo():
+  """Returns the project name and the current SVN workspace's root path."""
+
+  for line in GetCommandOutput('svn info .'):
+    m = _SVN_INFO_URL_RE.match(line)
+    if m:
+      project = m.group(1)  # googletest or googlemock
+      rel_path = m.group(2)
+      root = os.path.realpath(rel_path.count('/') * '../')
+      return project, root
+
+  return None, None
+
+
+def GetSvnTrunk():
+  """Returns the current SVN workspace's trunk root path."""
+
+  _, root = GetSvnInfo()
+  return root + '/trunk' if root else None
+
+
+def IsInGTestSvn():
+  project, _ = GetSvnInfo()
+  return project == 'googletest'
+
+
+def IsInGMockSvn():
+  project, _ = GetSvnInfo()
+  return project == 'googlemock'
diff --git a/build/_deps/googletest-src/googletest/scripts/fuse_gtest_files.py b/build/_deps/googletest-src/googletest/scripts/fuse_gtest_files.py
new file mode 100755
index 0000000000000000000000000000000000000000..d0dd464fe8b59c5410a3d1b85db4795bbd031d89
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/scripts/fuse_gtest_files.py
@@ -0,0 +1,253 @@
+#!/usr/bin/env python
+#
+# Copyright 2009, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""fuse_gtest_files.py v0.2.0
+Fuses Google Test source code into a .h file and a .cc file.
+
+SYNOPSIS
+       fuse_gtest_files.py [GTEST_ROOT_DIR] OUTPUT_DIR
+
+       Scans GTEST_ROOT_DIR for Google Test source code, and generates
+       two files: OUTPUT_DIR/gtest/gtest.h and OUTPUT_DIR/gtest/gtest-all.cc.
+       Then you can build your tests by adding OUTPUT_DIR to the include
+       search path and linking with OUTPUT_DIR/gtest/gtest-all.cc.  These
+       two files contain everything you need to use Google Test.  Hence
+       you can "install" Google Test by copying them to wherever you want.
+
+       GTEST_ROOT_DIR can be omitted and defaults to the parent
+       directory of the directory holding this script.
+
+EXAMPLES
+       ./fuse_gtest_files.py fused_gtest
+       ./fuse_gtest_files.py path/to/unpacked/gtest fused_gtest
+
+This tool is experimental.  In particular, it assumes that there is no
+conditional inclusion of Google Test headers.  Please report any
+problems to googletestframework@googlegroups.com.  You can read
+https://github.com/google/googletest/blob/master/googletest/docs/advanced.md for
+more information.
+"""
+
+__author__ = 'wan@google.com (Zhanyong Wan)'
+
+import os
+import re
+try:
+  from sets import Set as set  # For Python 2.3 compatibility
+except ImportError:
+  pass
+import sys
+
+# We assume that this file is in the scripts/ directory in the Google
+# Test root directory.
+DEFAULT_GTEST_ROOT_DIR = os.path.join(os.path.dirname(__file__), '..')
+
+# Regex for matching '#include "gtest/..."'.
+INCLUDE_GTEST_FILE_REGEX = re.compile(r'^\s*#\s*include\s*"(gtest/.+)"')
+
+# Regex for matching '#include "src/..."'.
+INCLUDE_SRC_FILE_REGEX = re.compile(r'^\s*#\s*include\s*"(src/.+)"')
+
+# Where to find the source seed files.
+GTEST_H_SEED = 'include/gtest/gtest.h'
+GTEST_SPI_H_SEED = 'include/gtest/gtest-spi.h'
+GTEST_ALL_CC_SEED = 'src/gtest-all.cc'
+
+# Where to put the generated files.
+GTEST_H_OUTPUT = 'gtest/gtest.h'
+GTEST_ALL_CC_OUTPUT = 'gtest/gtest-all.cc'
+
+
+def VerifyFileExists(directory, relative_path):
+  """Verifies that the given file exists; aborts on failure.
+
+  relative_path is the file path relative to the given directory.
+  """
+
+  if not os.path.isfile(os.path.join(directory, relative_path)):
+    print('ERROR: Cannot find %s in directory %s.' % (relative_path,
+                                                      directory))
+    print('Please either specify a valid project root directory '
+          'or omit it on the command line.')
+    sys.exit(1)
+
+
+def ValidateGTestRootDir(gtest_root):
+  """Makes sure gtest_root points to a valid gtest root directory.
+
+  The function aborts the program on failure.
+  """
+
+  VerifyFileExists(gtest_root, GTEST_H_SEED)
+  VerifyFileExists(gtest_root, GTEST_ALL_CC_SEED)
+
+
+def VerifyOutputFile(output_dir, relative_path):
+  """Verifies that the given output file path is valid.
+
+  relative_path is relative to the output_dir directory.
+  """
+
+  # Makes sure the output file either doesn't exist or can be overwritten.
+  output_file = os.path.join(output_dir, relative_path)
+  if os.path.exists(output_file):
+    # TODO(wan@google.com): The following user-interaction doesn't
+    # work with automated processes.  We should provide a way for the
+    # Makefile to force overwriting the files.
+    print('%s already exists in directory %s - overwrite it? (y/N) ' %
+          (relative_path, output_dir))
+    answer = sys.stdin.readline().strip()
+    if answer not in ['y', 'Y']:
+      print('ABORTED.')
+      sys.exit(1)
+
+  # Makes sure the directory holding the output file exists; creates
+  # it and all its ancestors if necessary.
+  parent_directory = os.path.dirname(output_file)
+  if not os.path.isdir(parent_directory):
+    os.makedirs(parent_directory)
+
+
+def ValidateOutputDir(output_dir):
+  """Makes sure output_dir points to a valid output directory.
+
+  The function aborts the program on failure.
+  """
+
+  VerifyOutputFile(output_dir, GTEST_H_OUTPUT)
+  VerifyOutputFile(output_dir, GTEST_ALL_CC_OUTPUT)
+
+
+def FuseGTestH(gtest_root, output_dir):
+  """Scans folder gtest_root to generate gtest/gtest.h in output_dir."""
+
+  output_file = open(os.path.join(output_dir, GTEST_H_OUTPUT), 'w')
+  processed_files = set()  # Holds all gtest headers we've processed.
+
+  def ProcessFile(gtest_header_path):
+    """Processes the given gtest header file."""
+
+    # We don't process the same header twice.
+    if gtest_header_path in processed_files:
+      return
+
+    processed_files.add(gtest_header_path)
+
+    # Reads each line in the given gtest header.
+    for line in open(os.path.join(gtest_root, gtest_header_path), 'r'):
+      m = INCLUDE_GTEST_FILE_REGEX.match(line)
+      if m:
+        # It's '#include "gtest/..."' - let's process it recursively.
+        ProcessFile('include/' + m.group(1))
+      else:
+        # Otherwise we copy the line unchanged to the output file.
+        output_file.write(line)
+
+  ProcessFile(GTEST_H_SEED)
+  output_file.close()
+
+
+def FuseGTestAllCcToFile(gtest_root, output_file):
+  """Scans folder gtest_root to generate gtest/gtest-all.cc in output_file."""
+
+  processed_files = set()
+
+  def ProcessFile(gtest_source_file):
+    """Processes the given gtest source file."""
+
+    # We don't process the same #included file twice.
+    if gtest_source_file in processed_files:
+      return
+
+    processed_files.add(gtest_source_file)
+
+    # Reads each line in the given gtest source file.
+    for line in open(os.path.join(gtest_root, gtest_source_file), 'r'):
+      m = INCLUDE_GTEST_FILE_REGEX.match(line)
+      if m:
+        if 'include/' + m.group(1) == GTEST_SPI_H_SEED:
+          # It's '#include "gtest/gtest-spi.h"'.  This file is not
+          # #included by "gtest/gtest.h", so we need to process it.
+          ProcessFile(GTEST_SPI_H_SEED)
+        else:
+          # It's '#include "gtest/foo.h"' where foo is not gtest-spi.
+          # We treat it as '#include "gtest/gtest.h"', as all other
+          # gtest headers are being fused into gtest.h and cannot be
+          # #included directly.
+
+          # There is no need to #include "gtest/gtest.h" more than once.
+          if not GTEST_H_SEED in processed_files:
+            processed_files.add(GTEST_H_SEED)
+            output_file.write('#include "%s"\n' % (GTEST_H_OUTPUT,))
+      else:
+        m = INCLUDE_SRC_FILE_REGEX.match(line)
+        if m:
+          # It's '#include "src/foo"' - let's process it recursively.
+          ProcessFile(m.group(1))
+        else:
+          output_file.write(line)
+
+  ProcessFile(GTEST_ALL_CC_SEED)
+
+
+def FuseGTestAllCc(gtest_root, output_dir):
+  """Scans folder gtest_root to generate gtest/gtest-all.cc in output_dir."""
+
+  output_file = open(os.path.join(output_dir, GTEST_ALL_CC_OUTPUT), 'w')
+  FuseGTestAllCcToFile(gtest_root, output_file)
+  output_file.close()
+
+
+def FuseGTest(gtest_root, output_dir):
+  """Fuses gtest.h and gtest-all.cc."""
+
+  ValidateGTestRootDir(gtest_root)
+  ValidateOutputDir(output_dir)
+
+  FuseGTestH(gtest_root, output_dir)
+  FuseGTestAllCc(gtest_root, output_dir)
+
+
+def main():
+  argc = len(sys.argv)
+  if argc == 2:
+    # fuse_gtest_files.py OUTPUT_DIR
+    FuseGTest(DEFAULT_GTEST_ROOT_DIR, sys.argv[1])
+  elif argc == 3:
+    # fuse_gtest_files.py GTEST_ROOT_DIR OUTPUT_DIR
+    FuseGTest(sys.argv[1], sys.argv[2])
+  else:
+    print(__doc__)
+    sys.exit(1)
+
+
+if __name__ == '__main__':
+  main()
diff --git a/build/_deps/googletest-src/googletest/scripts/gen_gtest_pred_impl.py b/build/_deps/googletest-src/googletest/scripts/gen_gtest_pred_impl.py
new file mode 100755
index 0000000000000000000000000000000000000000..b43efdf41e5c02740f72b35532be5cf049794835
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/scripts/gen_gtest_pred_impl.py
@@ -0,0 +1,730 @@
+#!/usr/bin/env python
+#
+# Copyright 2006, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""gen_gtest_pred_impl.py v0.1
+
+Generates the implementation of Google Test predicate assertions and
+accompanying tests.
+
+Usage:
+
+  gen_gtest_pred_impl.py MAX_ARITY
+
+where MAX_ARITY is a positive integer.
+
+The command generates the implementation of up-to MAX_ARITY-ary
+predicate assertions, and writes it to file gtest_pred_impl.h in the
+directory where the script is.  It also generates the accompanying
+unit test in file gtest_pred_impl_unittest.cc.
+"""
+
+__author__ = 'wan@google.com (Zhanyong Wan)'
+
+import os
+import sys
+import time
+
+# Where this script is.
+SCRIPT_DIR = os.path.dirname(sys.argv[0])
+
+# Where to store the generated header.
+HEADER = os.path.join(SCRIPT_DIR, '../include/gtest/gtest_pred_impl.h')
+
+# Where to store the generated unit test.
+UNIT_TEST = os.path.join(SCRIPT_DIR, '../test/gtest_pred_impl_unittest.cc')
+
+
+def HeaderPreamble(n):
+  """Returns the preamble for the header file.
+
+  Args:
+    n:  the maximum arity of the predicate macros to be generated.
+  """
+
+  # A map that defines the values used in the preamble template.
+  DEFS = {
+    'today' : time.strftime('%m/%d/%Y'),
+    'year' : time.strftime('%Y'),
+    'command' : '%s %s' % (os.path.basename(sys.argv[0]), n),
+    'n' : n
+    }
+
+  return (
+"""// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// This file is AUTOMATICALLY GENERATED on %(today)s by command
+// '%(command)s'.  DO NOT EDIT BY HAND!
+//
+// Implements a family of generic predicate assertion macros.
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
+#define GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
+
+#include "gtest/gtest.h"
+
+namespace testing {
+
+// This header implements a family of generic predicate assertion
+// macros:
+//
+//   ASSERT_PRED_FORMAT1(pred_format, v1)
+//   ASSERT_PRED_FORMAT2(pred_format, v1, v2)
+//   ...
+//
+// where pred_format is a function or functor that takes n (in the
+// case of ASSERT_PRED_FORMATn) values and their source expression
+// text, and returns a testing::AssertionResult.  See the definition
+// of ASSERT_EQ in gtest.h for an example.
+//
+// If you don't care about formatting, you can use the more
+// restrictive version:
+//
+//   ASSERT_PRED1(pred, v1)
+//   ASSERT_PRED2(pred, v1, v2)
+//   ...
+//
+// where pred is an n-ary function or functor that returns bool,
+// and the values v1, v2, ..., must support the << operator for
+// streaming to std::ostream.
+//
+// We also define the EXPECT_* variations.
+//
+// For now we only support predicates whose arity is at most %(n)s.
+// Please email googletestframework@googlegroups.com if you need
+// support for higher arities.
+
+// GTEST_ASSERT_ is the basic statement to which all of the assertions
+// in this file reduce.  Don't use this in your code.
+
+#define GTEST_ASSERT_(expression, on_failure) \\
+  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \\
+  if (const ::testing::AssertionResult gtest_ar = (expression)) \\
+    ; \\
+  else \\
+    on_failure(gtest_ar.failure_message())
+""" % DEFS)
+
+
+def Arity(n):
+  """Returns the English name of the given arity."""
+
+  if n < 0:
+    return None
+  elif n <= 3:
+    return ['nullary', 'unary', 'binary', 'ternary'][n]
+  else:
+    return '%s-ary' % n
+
+
+def Title(word):
+  """Returns the given word in title case.  The difference between
+  this and string's title() method is that Title('4-ary') is '4-ary'
+  while '4-ary'.title() is '4-Ary'."""
+
+  return word[0].upper() + word[1:]
+
+
+def OneTo(n):
+  """Returns the list [1, 2, 3, ..., n]."""
+
+  return range(1, n + 1)
+
+
+def Iter(n, format, sep=''):
+  """Given a positive integer n, a format string that contains 0 or
+  more '%s' format specs, and optionally a separator string, returns
+  the join of n strings, each formatted with the format string on an
+  iterator ranged from 1 to n.
+
+  Example:
+
+  Iter(3, 'v%s', sep=', ') returns 'v1, v2, v3'.
+  """
+
+  # How many '%s' specs are in format?
+  spec_count = len(format.split('%s')) - 1
+  return sep.join([format % (spec_count * (i,)) for i in OneTo(n)])
+
+
+def ImplementationForArity(n):
+  """Returns the implementation of n-ary predicate assertions."""
+
+  # A map the defines the values used in the implementation template.
+  DEFS = {
+    'n' : str(n),
+    'vs' : Iter(n, 'v%s', sep=', '),
+    'vts' : Iter(n, '#v%s', sep=', '),
+    'arity' : Arity(n),
+    'Arity' : Title(Arity(n))
+    }
+
+  impl = """
+
+// Helper function for implementing {EXPECT|ASSERT}_PRED%(n)s.  Don't use
+// this in your code.
+template <typename Pred""" % DEFS
+
+  impl += Iter(n, """,
+          typename T%s""")
+
+  impl += """>
+AssertionResult AssertPred%(n)sHelper(const char* pred_text""" % DEFS
+
+  impl += Iter(n, """,
+                                  const char* e%s""")
+
+  impl += """,
+                                  Pred pred"""
+
+  impl += Iter(n, """,
+                                  const T%s& v%s""")
+
+  impl += """) {
+  if (pred(%(vs)s)) return AssertionSuccess();
+
+""" % DEFS
+
+  impl += '  return AssertionFailure() << pred_text << "("'
+
+  impl += Iter(n, """
+                            << e%s""", sep=' << ", "')
+
+  impl += ' << ") evaluates to false, where"'
+
+  impl += Iter(n, """
+                            << "\\n" << e%s << " evaluates to " << v%s""")
+
+  impl += """;
+}
+
+// Internal macro for implementing {EXPECT|ASSERT}_PRED_FORMAT%(n)s.
+// Don't use this in your code.
+#define GTEST_PRED_FORMAT%(n)s_(pred_format, %(vs)s, on_failure)\\
+  GTEST_ASSERT_(pred_format(%(vts)s, %(vs)s), \\
+                on_failure)
+
+// Internal macro for implementing {EXPECT|ASSERT}_PRED%(n)s.  Don't use
+// this in your code.
+#define GTEST_PRED%(n)s_(pred, %(vs)s, on_failure)\\
+  GTEST_ASSERT_(::testing::AssertPred%(n)sHelper(#pred""" % DEFS
+
+  impl += Iter(n, """, \\
+                                             #v%s""")
+
+  impl += """, \\
+                                             pred"""
+
+  impl += Iter(n, """, \\
+                                             v%s""")
+
+  impl += """), on_failure)
+
+// %(Arity)s predicate assertion macros.
+#define EXPECT_PRED_FORMAT%(n)s(pred_format, %(vs)s) \\
+  GTEST_PRED_FORMAT%(n)s_(pred_format, %(vs)s, GTEST_NONFATAL_FAILURE_)
+#define EXPECT_PRED%(n)s(pred, %(vs)s) \\
+  GTEST_PRED%(n)s_(pred, %(vs)s, GTEST_NONFATAL_FAILURE_)
+#define ASSERT_PRED_FORMAT%(n)s(pred_format, %(vs)s) \\
+  GTEST_PRED_FORMAT%(n)s_(pred_format, %(vs)s, GTEST_FATAL_FAILURE_)
+#define ASSERT_PRED%(n)s(pred, %(vs)s) \\
+  GTEST_PRED%(n)s_(pred, %(vs)s, GTEST_FATAL_FAILURE_)
+
+""" % DEFS
+
+  return impl
+
+
+def HeaderPostamble():
+  """Returns the postamble for the header file."""
+
+  return """
+
+}  // namespace testing
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_PRED_IMPL_H_
+"""
+
+
+def GenerateFile(path, content):
+  """Given a file path and a content string
+     overwrites it with the given content.
+  """
+  print 'Updating file %s . . .' % path
+  f = file(path, 'w+')
+  print >>f, content,
+  f.close()
+
+  print 'File %s has been updated.' % path
+
+
+def GenerateHeader(n):
+  """Given the maximum arity n, updates the header file that implements
+  the predicate assertions.
+  """
+  GenerateFile(HEADER,
+               HeaderPreamble(n)
+               + ''.join([ImplementationForArity(i) for i in OneTo(n)])
+               + HeaderPostamble())
+
+
+def UnitTestPreamble():
+  """Returns the preamble for the unit test file."""
+
+  # A map that defines the values used in the preamble template.
+  DEFS = {
+    'today' : time.strftime('%m/%d/%Y'),
+    'year' : time.strftime('%Y'),
+    'command' : '%s %s' % (os.path.basename(sys.argv[0]), sys.argv[1]),
+    }
+
+  return (
+"""// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// This file is AUTOMATICALLY GENERATED on %(today)s by command
+// '%(command)s'.  DO NOT EDIT BY HAND!
+
+// Regression test for gtest_pred_impl.h
+//
+// This file is generated by a script and quite long.  If you intend to
+// learn how Google Test works by reading its unit tests, read
+// gtest_unittest.cc instead.
+//
+// This is intended as a regression test for the Google Test predicate
+// assertions.  We compile it as part of the gtest_unittest target
+// only to keep the implementation tidy and compact, as it is quite
+// involved to set up the stage for testing Google Test using Google
+// Test itself.
+//
+// Currently, gtest_unittest takes ~11 seconds to run in the testing
+// daemon.  In the future, if it grows too large and needs much more
+// time to finish, we should consider separating this file into a
+// stand-alone regression test.
+
+#include <iostream>
+
+#include "gtest/gtest.h"
+#include "gtest/gtest-spi.h"
+
+// A user-defined data type.
+struct Bool {
+  explicit Bool(int val) : value(val != 0) {}
+
+  bool operator>(int n) const { return value > Bool(n).value; }
+
+  Bool operator+(const Bool& rhs) const { return Bool(value + rhs.value); }
+
+  bool operator==(const Bool& rhs) const { return value == rhs.value; }
+
+  bool value;
+};
+
+// Enables Bool to be used in assertions.
+std::ostream& operator<<(std::ostream& os, const Bool& x) {
+  return os << (x.value ? "true" : "false");
+}
+
+""" % DEFS)
+
+
+def TestsForArity(n):
+  """Returns the tests for n-ary predicate assertions."""
+
+  # A map that defines the values used in the template for the tests.
+  DEFS = {
+    'n' : n,
+    'es' : Iter(n, 'e%s', sep=', '),
+    'vs' : Iter(n, 'v%s', sep=', '),
+    'vts' : Iter(n, '#v%s', sep=', '),
+    'tvs' : Iter(n, 'T%s v%s', sep=', '),
+    'int_vs' : Iter(n, 'int v%s', sep=', '),
+    'Bool_vs' : Iter(n, 'Bool v%s', sep=', '),
+    'types' : Iter(n, 'typename T%s', sep=', '),
+    'v_sum' : Iter(n, 'v%s', sep=' + '),
+    'arity' : Arity(n),
+    'Arity' : Title(Arity(n)),
+    }
+
+  tests = (
+"""// Sample functions/functors for testing %(arity)s predicate assertions.
+
+// A %(arity)s predicate function.
+template <%(types)s>
+bool PredFunction%(n)s(%(tvs)s) {
+  return %(v_sum)s > 0;
+}
+
+// The following two functions are needed to circumvent a bug in
+// gcc 2.95.3, which sometimes has problem with the above template
+// function.
+bool PredFunction%(n)sInt(%(int_vs)s) {
+  return %(v_sum)s > 0;
+}
+bool PredFunction%(n)sBool(%(Bool_vs)s) {
+  return %(v_sum)s > 0;
+}
+""" % DEFS)
+
+  tests += """
+// A %(arity)s predicate functor.
+struct PredFunctor%(n)s {
+  template <%(types)s>
+  bool operator()(""" % DEFS
+
+  tests += Iter(n, 'const T%s& v%s', sep=""",
+                  """)
+
+  tests += """) {
+    return %(v_sum)s > 0;
+  }
+};
+""" % DEFS
+
+  tests += """
+// A %(arity)s predicate-formatter function.
+template <%(types)s>
+testing::AssertionResult PredFormatFunction%(n)s(""" % DEFS
+
+  tests += Iter(n, 'const char* e%s', sep=""",
+                                             """)
+
+  tests += Iter(n, """,
+                                             const T%s& v%s""")
+
+  tests += """) {
+  if (PredFunction%(n)s(%(vs)s))
+    return testing::AssertionSuccess();
+
+  return testing::AssertionFailure()
+      << """ % DEFS
+
+  tests += Iter(n, 'e%s', sep=' << " + " << ')
+
+  tests += """
+      << " is expected to be positive, but evaluates to "
+      << %(v_sum)s << ".";
+}
+""" % DEFS
+
+  tests += """
+// A %(arity)s predicate-formatter functor.
+struct PredFormatFunctor%(n)s {
+  template <%(types)s>
+  testing::AssertionResult operator()(""" % DEFS
+
+  tests += Iter(n, 'const char* e%s', sep=""",
+                                      """)
+
+  tests += Iter(n, """,
+                                      const T%s& v%s""")
+
+  tests += """) const {
+    return PredFormatFunction%(n)s(%(es)s, %(vs)s);
+  }
+};
+""" % DEFS
+
+  tests += """
+// Tests for {EXPECT|ASSERT}_PRED_FORMAT%(n)s.
+
+class Predicate%(n)sTest : public testing::Test {
+ protected:
+  virtual void SetUp() {
+    expected_to_finish_ = true;
+    finished_ = false;""" % DEFS
+
+  tests += """
+    """ + Iter(n, 'n%s_ = ') + """0;
+  }
+"""
+
+  tests += """
+  virtual void TearDown() {
+    // Verifies that each of the predicate's arguments was evaluated
+    // exactly once."""
+
+  tests += ''.join(["""
+    EXPECT_EQ(1, n%s_) <<
+        "The predicate assertion didn't evaluate argument %s "
+        "exactly once.";""" % (i, i + 1) for i in OneTo(n)])
+
+  tests += """
+
+    // Verifies that the control flow in the test function is expected.
+    if (expected_to_finish_ && !finished_) {
+      FAIL() << "The predicate assertion unexpactedly aborted the test.";
+    } else if (!expected_to_finish_ && finished_) {
+      FAIL() << "The failed predicate assertion didn't abort the test "
+                "as expected.";
+    }
+  }
+
+  // true iff the test function is expected to run to finish.
+  static bool expected_to_finish_;
+
+  // true iff the test function did run to finish.
+  static bool finished_;
+""" % DEFS
+
+  tests += Iter(n, """
+  static int n%s_;""")
+
+  tests += """
+};
+
+bool Predicate%(n)sTest::expected_to_finish_;
+bool Predicate%(n)sTest::finished_;
+""" % DEFS
+
+  tests += Iter(n, """int Predicate%%(n)sTest::n%s_;
+""") % DEFS
+
+  tests += """
+typedef Predicate%(n)sTest EXPECT_PRED_FORMAT%(n)sTest;
+typedef Predicate%(n)sTest ASSERT_PRED_FORMAT%(n)sTest;
+typedef Predicate%(n)sTest EXPECT_PRED%(n)sTest;
+typedef Predicate%(n)sTest ASSERT_PRED%(n)sTest;
+""" % DEFS
+
+  def GenTest(use_format, use_assert, expect_failure,
+              use_functor, use_user_type):
+    """Returns the test for a predicate assertion macro.
+
+    Args:
+      use_format:     true iff the assertion is a *_PRED_FORMAT*.
+      use_assert:     true iff the assertion is a ASSERT_*.
+      expect_failure: true iff the assertion is expected to fail.
+      use_functor:    true iff the first argument of the assertion is
+                      a functor (as opposed to a function)
+      use_user_type:  true iff the predicate functor/function takes
+                      argument(s) of a user-defined type.
+
+    Example:
+
+      GenTest(1, 0, 0, 1, 0) returns a test that tests the behavior
+      of a successful EXPECT_PRED_FORMATn() that takes a functor
+      whose arguments have built-in types."""
+
+    if use_assert:
+      assrt = 'ASSERT'  # 'assert' is reserved, so we cannot use
+                        # that identifier here.
+    else:
+      assrt = 'EXPECT'
+
+    assertion = assrt + '_PRED'
+
+    if use_format:
+      pred_format = 'PredFormat'
+      assertion += '_FORMAT'
+    else:
+      pred_format = 'Pred'
+
+    assertion += '%(n)s' % DEFS
+
+    if use_functor:
+      pred_format_type = 'functor'
+      pred_format += 'Functor%(n)s()'
+    else:
+      pred_format_type = 'function'
+      pred_format += 'Function%(n)s'
+      if not use_format:
+        if use_user_type:
+          pred_format += 'Bool'
+        else:
+          pred_format += 'Int'
+
+    test_name = pred_format_type.title()
+
+    if use_user_type:
+      arg_type = 'user-defined type (Bool)'
+      test_name += 'OnUserType'
+      if expect_failure:
+        arg = 'Bool(n%s_++)'
+      else:
+        arg = 'Bool(++n%s_)'
+    else:
+      arg_type = 'built-in type (int)'
+      test_name += 'OnBuiltInType'
+      if expect_failure:
+        arg = 'n%s_++'
+      else:
+        arg = '++n%s_'
+
+    if expect_failure:
+      successful_or_failed = 'failed'
+      expected_or_not = 'expected.'
+      test_name +=  'Failure'
+    else:
+      successful_or_failed = 'successful'
+      expected_or_not = 'UNEXPECTED!'
+      test_name +=  'Success'
+
+    # A map that defines the values used in the test template.
+    defs = DEFS.copy()
+    defs.update({
+      'assert' : assrt,
+      'assertion' : assertion,
+      'test_name' : test_name,
+      'pf_type' : pred_format_type,
+      'pf' : pred_format,
+      'arg_type' : arg_type,
+      'arg' : arg,
+      'successful' : successful_or_failed,
+      'expected' : expected_or_not,
+      })
+
+    test = """
+// Tests a %(successful)s %(assertion)s where the
+// predicate-formatter is a %(pf_type)s on a %(arg_type)s.
+TEST_F(%(assertion)sTest, %(test_name)s) {""" % defs
+
+    indent = (len(assertion) + 3)*' '
+    extra_indent = ''
+
+    if expect_failure:
+      extra_indent = '  '
+      if use_assert:
+        test += """
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT"""
+      else:
+        test += """
+  EXPECT_NONFATAL_FAILURE({  // NOLINT"""
+
+    test += '\n' + extra_indent + """  %(assertion)s(%(pf)s""" % defs
+
+    test = test % defs
+    test += Iter(n, ',\n' + indent + extra_indent + '%(arg)s' % defs)
+    test += ');\n' + extra_indent + '  finished_ = true;\n'
+
+    if expect_failure:
+      test += '  }, "");\n'
+
+    test += '}\n'
+    return test
+
+  # Generates tests for all 2**6 = 64 combinations.
+  tests += ''.join([GenTest(use_format, use_assert, expect_failure,
+                            use_functor, use_user_type)
+                    for use_format in [0, 1]
+                    for use_assert in [0, 1]
+                    for expect_failure in [0, 1]
+                    for use_functor in [0, 1]
+                    for use_user_type in [0, 1]
+                    ])
+
+  return tests
+
+
+def UnitTestPostamble():
+  """Returns the postamble for the tests."""
+
+  return ''
+
+
+def GenerateUnitTest(n):
+  """Returns the tests for up-to n-ary predicate assertions."""
+
+  GenerateFile(UNIT_TEST,
+               UnitTestPreamble()
+               + ''.join([TestsForArity(i) for i in OneTo(n)])
+               + UnitTestPostamble())
+
+
+def _Main():
+  """The entry point of the script.  Generates the header file and its
+  unit test."""
+
+  if len(sys.argv) != 2:
+    print __doc__
+    print 'Author: ' + __author__
+    sys.exit(1)
+
+  n = int(sys.argv[1])
+  GenerateHeader(n)
+  GenerateUnitTest(n)
+
+
+if __name__ == '__main__':
+  _Main()
diff --git a/build/_deps/googletest-src/googletest/scripts/gtest-config.in b/build/_deps/googletest-src/googletest/scripts/gtest-config.in
new file mode 100755
index 0000000000000000000000000000000000000000..780f8432efcc1aeeaaad0706086d3ff641285b68
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/scripts/gtest-config.in
@@ -0,0 +1,274 @@
+#!/bin/sh
+
+# These variables are automatically filled in by the configure script.
+name="@PACKAGE_TARNAME@"
+version="@PACKAGE_VERSION@"
+
+show_usage()
+{
+  echo "Usage: gtest-config [OPTIONS...]"
+}
+
+show_help()
+{
+  show_usage
+  cat <<\EOF
+
+The `gtest-config' script provides access to the necessary compile and linking
+flags to connect with Google C++ Testing Framework, both in a build prior to
+installation, and on the system proper after installation. The installation
+overrides may be issued in combination with any other queries, but will only
+affect installation queries if called on a built but not installed gtest. The
+installation queries may not be issued with any other types of queries, and
+only one installation query may be made at a time. The version queries and
+compiler flag queries may be combined as desired but not mixed. Different
+version queries are always combined with logical "and" semantics, and only the
+last of any particular query is used while all previous ones ignored. All
+versions must be specified as a sequence of numbers separated by periods.
+Compiler flag queries output the union of the sets of flags when combined.
+
+ Examples:
+  gtest-config --min-version=1.0 || echo "Insufficient Google Test version."
+
+  g++ $(gtest-config --cppflags --cxxflags) -o foo.o -c foo.cpp
+  g++ $(gtest-config --ldflags --libs) -o foo foo.o
+
+  # When using a built but not installed Google Test:
+  g++ $(../../my_gtest_build/scripts/gtest-config ...) ...
+
+  # When using an installed Google Test, but with installation overrides:
+  export GTEST_PREFIX="/opt"
+  g++ $(gtest-config --libdir="/opt/lib64" ...) ...
+
+ Help:
+  --usage                    brief usage information
+  --help                     display this help message
+
+ Installation Overrides:
+  --prefix=<dir>             overrides the installation prefix
+  --exec-prefix=<dir>        overrides the executable installation prefix
+  --libdir=<dir>             overrides the library installation prefix
+  --includedir=<dir>         overrides the header file installation prefix
+
+ Installation Queries:
+  --prefix                   installation prefix
+  --exec-prefix              executable installation prefix
+  --libdir                   library installation directory
+  --includedir               header file installation directory
+  --version                  the version of the Google Test installation
+
+ Version Queries:
+  --min-version=VERSION      return 0 if the version is at least VERSION
+  --exact-version=VERSION    return 0 if the version is exactly VERSION
+  --max-version=VERSION      return 0 if the version is at most VERSION
+
+ Compilation Flag Queries:
+  --cppflags                 compile flags specific to the C-like preprocessors
+  --cxxflags                 compile flags appropriate for C++ programs
+  --ldflags                  linker flags
+  --libs                     libraries for linking
+
+EOF
+}
+
+# This function bounds our version with a min and a max. It uses some clever
+# POSIX-compliant variable expansion to portably do all the work in the shell
+# and avoid any dependency on a particular "sed" or "awk" implementation.
+# Notable is that it will only ever compare the first 3 components of versions.
+# Further components will be cleanly stripped off. All versions must be
+# unadorned, so "v1.0" will *not* work. The minimum version must be in $1, and
+# the max in $2. TODO(chandlerc@google.com): If this ever breaks, we should
+# investigate expanding this via autom4te from AS_VERSION_COMPARE rather than
+# continuing to maintain our own shell version.
+check_versions()
+{
+  major_version=${version%%.*}
+  minor_version="0"
+  point_version="0"
+  if test "${version#*.}" != "${version}"; then
+    minor_version=${version#*.}
+    minor_version=${minor_version%%.*}
+  fi
+  if test "${version#*.*.}" != "${version}"; then
+    point_version=${version#*.*.}
+    point_version=${point_version%%.*}
+  fi
+
+  min_version="$1"
+  min_major_version=${min_version%%.*}
+  min_minor_version="0"
+  min_point_version="0"
+  if test "${min_version#*.}" != "${min_version}"; then
+    min_minor_version=${min_version#*.}
+    min_minor_version=${min_minor_version%%.*}
+  fi
+  if test "${min_version#*.*.}" != "${min_version}"; then
+    min_point_version=${min_version#*.*.}
+    min_point_version=${min_point_version%%.*}
+  fi
+
+  max_version="$2"
+  max_major_version=${max_version%%.*}
+  max_minor_version="0"
+  max_point_version="0"
+  if test "${max_version#*.}" != "${max_version}"; then
+    max_minor_version=${max_version#*.}
+    max_minor_version=${max_minor_version%%.*}
+  fi
+  if test "${max_version#*.*.}" != "${max_version}"; then
+    max_point_version=${max_version#*.*.}
+    max_point_version=${max_point_version%%.*}
+  fi
+
+  test $(($major_version)) -lt $(($min_major_version)) && exit 1
+  if test $(($major_version)) -eq $(($min_major_version)); then
+    test $(($minor_version)) -lt $(($min_minor_version)) && exit 1
+    if test $(($minor_version)) -eq $(($min_minor_version)); then
+      test $(($point_version)) -lt $(($min_point_version)) && exit 1
+    fi
+  fi
+
+  test $(($major_version)) -gt $(($max_major_version)) && exit 1
+  if test $(($major_version)) -eq $(($max_major_version)); then
+    test $(($minor_version)) -gt $(($max_minor_version)) && exit 1
+    if test $(($minor_version)) -eq $(($max_minor_version)); then
+      test $(($point_version)) -gt $(($max_point_version)) && exit 1
+    fi
+  fi
+
+  exit 0
+}
+
+# Show the usage line when no arguments are specified.
+if test $# -eq 0; then
+  show_usage
+  exit 1
+fi
+
+while test $# -gt 0; do
+  case $1 in
+    --usage)          show_usage;         exit 0;;
+    --help)           show_help;          exit 0;;
+
+    # Installation overrides
+    --prefix=*)       GTEST_PREFIX=${1#--prefix=};;
+    --exec-prefix=*)  GTEST_EXEC_PREFIX=${1#--exec-prefix=};;
+    --libdir=*)       GTEST_LIBDIR=${1#--libdir=};;
+    --includedir=*)   GTEST_INCLUDEDIR=${1#--includedir=};;
+
+    # Installation queries
+    --prefix|--exec-prefix|--libdir|--includedir|--version)
+      if test -n "${do_query}"; then
+        show_usage
+        exit 1
+      fi
+      do_query=${1#--}
+      ;;
+
+    # Version checking
+    --min-version=*)
+      do_check_versions=yes
+      min_version=${1#--min-version=}
+      ;;
+    --max-version=*)
+      do_check_versions=yes
+      max_version=${1#--max-version=}
+      ;;
+    --exact-version=*)
+      do_check_versions=yes
+      exact_version=${1#--exact-version=}
+      ;;
+
+    # Compiler flag output
+    --cppflags)       echo_cppflags=yes;;
+    --cxxflags)       echo_cxxflags=yes;;
+    --ldflags)        echo_ldflags=yes;;
+    --libs)           echo_libs=yes;;
+
+    # Everything else is an error
+    *)                show_usage;         exit 1;;
+  esac
+  shift
+done
+
+# These have defaults filled in by the configure script but can also be
+# overridden by environment variables or command line parameters.
+prefix="${GTEST_PREFIX:-@prefix@}"
+exec_prefix="${GTEST_EXEC_PREFIX:-@exec_prefix@}"
+libdir="${GTEST_LIBDIR:-@libdir@}"
+includedir="${GTEST_INCLUDEDIR:-@includedir@}"
+
+# We try and detect if our binary is not located at its installed location. If
+# it's not, we provide variables pointing to the source and build tree rather
+# than to the install tree. This allows building against a just-built gtest
+# rather than an installed gtest.
+bindir="@bindir@"
+this_relative_bindir=`dirname $0`
+this_bindir=`cd ${this_relative_bindir}; pwd -P`
+if test "${this_bindir}" = "${this_bindir%${bindir}}"; then
+  # The path to the script doesn't end in the bindir sequence from Autoconf,
+  # assume that we are in a build tree.
+  build_dir=`dirname ${this_bindir}`
+  src_dir=`cd ${this_bindir}; cd @top_srcdir@; pwd -P`
+
+  # TODO(chandlerc@google.com): This is a dangerous dependency on libtool, we
+  # should work to remove it, and/or remove libtool altogether, replacing it
+  # with direct references to the library and a link path.
+  gtest_libs="${build_dir}/lib/libgtest.la @PTHREAD_CFLAGS@ @PTHREAD_LIBS@"
+  gtest_ldflags=""
+
+  # We provide hooks to include from either the source or build dir, where the
+  # build dir is always preferred. This will potentially allow us to write
+  # build rules for generated headers and have them automatically be preferred
+  # over provided versions.
+  gtest_cppflags="-I${build_dir}/include -I${src_dir}/include"
+  gtest_cxxflags="@PTHREAD_CFLAGS@"
+else
+  # We're using an installed gtest, although it may be staged under some
+  # prefix. Assume (as our own libraries do) that we can resolve the prefix,
+  # and are present in the dynamic link paths.
+  gtest_ldflags="-L${libdir}"
+  gtest_libs="-l${name} @PTHREAD_CFLAGS@ @PTHREAD_LIBS@"
+  gtest_cppflags="-I${includedir}"
+  gtest_cxxflags="@PTHREAD_CFLAGS@"
+fi
+
+# Do an installation query if requested.
+if test -n "$do_query"; then
+  case $do_query in
+    prefix)           echo $prefix;       exit 0;;
+    exec-prefix)      echo $exec_prefix;  exit 0;;
+    libdir)           echo $libdir;       exit 0;;
+    includedir)       echo $includedir;   exit 0;;
+    version)          echo $version;      exit 0;;
+    *)                show_usage;         exit 1;;
+  esac
+fi
+
+# Do a version check if requested.
+if test "$do_check_versions" = "yes"; then
+  # Make sure we didn't receive a bad combination of parameters.
+  test "$echo_cppflags" = "yes" && show_usage && exit 1
+  test "$echo_cxxflags" = "yes" && show_usage && exit 1
+  test "$echo_ldflags" = "yes"  && show_usage && exit 1
+  test "$echo_libs" = "yes"     && show_usage && exit 1
+
+  if test "$exact_version" != ""; then
+    check_versions $exact_version $exact_version
+    # unreachable
+  else
+    check_versions ${min_version:-0.0.0} ${max_version:-9999.9999.9999}
+    # unreachable
+  fi
+fi
+
+# Do the output in the correct order so that these can be used in-line of
+# a compiler invocation.
+output=""
+test "$echo_cppflags" = "yes" && output="$output $gtest_cppflags"
+test "$echo_cxxflags" = "yes" && output="$output $gtest_cxxflags"
+test "$echo_ldflags" = "yes"  && output="$output $gtest_ldflags"
+test "$echo_libs" = "yes"     && output="$output $gtest_libs"
+echo $output
+
+exit 0
diff --git a/build/_deps/googletest-src/googletest/scripts/pump.py b/build/_deps/googletest-src/googletest/scripts/pump.py
new file mode 100755
index 0000000000000000000000000000000000000000..5efb653c207d1f1c2aecc4d690bf732e3c1d71ab
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/scripts/pump.py
@@ -0,0 +1,855 @@
+#!/usr/bin/env python
+#
+# Copyright 2008, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""pump v0.2.0 - Pretty Useful for Meta Programming.
+
+A tool for preprocessor meta programming.  Useful for generating
+repetitive boilerplate code.  Especially useful for writing C++
+classes, functions, macros, and templates that need to work with
+various number of arguments.
+
+USAGE:
+       pump.py SOURCE_FILE
+
+EXAMPLES:
+       pump.py foo.cc.pump
+         Converts foo.cc.pump to foo.cc.
+
+GRAMMAR:
+       CODE ::= ATOMIC_CODE*
+       ATOMIC_CODE ::= $var ID = EXPRESSION
+           | $var ID = [[ CODE ]]
+           | $range ID EXPRESSION..EXPRESSION
+           | $for ID SEPARATOR [[ CODE ]]
+           | $($)
+           | $ID
+           | $(EXPRESSION)
+           | $if EXPRESSION [[ CODE ]] ELSE_BRANCH
+           | [[ CODE ]]
+           | RAW_CODE
+       SEPARATOR ::= RAW_CODE | EMPTY
+       ELSE_BRANCH ::= $else [[ CODE ]]
+           | $elif EXPRESSION [[ CODE ]] ELSE_BRANCH
+           | EMPTY
+       EXPRESSION has Python syntax.
+"""
+
+__author__ = 'wan@google.com (Zhanyong Wan)'
+
+import os
+import re
+import sys
+
+
+TOKEN_TABLE = [
+    (re.compile(r'\$var\s+'), '$var'),
+    (re.compile(r'\$elif\s+'), '$elif'),
+    (re.compile(r'\$else\s+'), '$else'),
+    (re.compile(r'\$for\s+'), '$for'),
+    (re.compile(r'\$if\s+'), '$if'),
+    (re.compile(r'\$range\s+'), '$range'),
+    (re.compile(r'\$[_A-Za-z]\w*'), '$id'),
+    (re.compile(r'\$\(\$\)'), '$($)'),
+    (re.compile(r'\$'), '$'),
+    (re.compile(r'\[\[\n?'), '[['),
+    (re.compile(r'\]\]\n?'), ']]'),
+    ]
+
+
+class Cursor:
+  """Represents a position (line and column) in a text file."""
+
+  def __init__(self, line=-1, column=-1):
+    self.line = line
+    self.column = column
+
+  def __eq__(self, rhs):
+    return self.line == rhs.line and self.column == rhs.column
+
+  def __ne__(self, rhs):
+    return not self == rhs
+
+  def __lt__(self, rhs):
+    return self.line < rhs.line or (
+        self.line == rhs.line and self.column < rhs.column)
+
+  def __le__(self, rhs):
+    return self < rhs or self == rhs
+
+  def __gt__(self, rhs):
+    return rhs < self
+
+  def __ge__(self, rhs):
+    return rhs <= self
+
+  def __str__(self):
+    if self == Eof():
+      return 'EOF'
+    else:
+      return '%s(%s)' % (self.line + 1, self.column)
+
+  def __add__(self, offset):
+    return Cursor(self.line, self.column + offset)
+
+  def __sub__(self, offset):
+    return Cursor(self.line, self.column - offset)
+
+  def Clone(self):
+    """Returns a copy of self."""
+
+    return Cursor(self.line, self.column)
+
+
+# Special cursor to indicate the end-of-file.
+def Eof():
+  """Returns the special cursor to denote the end-of-file."""
+  return Cursor(-1, -1)
+
+
+class Token:
+  """Represents a token in a Pump source file."""
+
+  def __init__(self, start=None, end=None, value=None, token_type=None):
+    if start is None:
+      self.start = Eof()
+    else:
+      self.start = start
+    if end is None:
+      self.end = Eof()
+    else:
+      self.end = end
+    self.value = value
+    self.token_type = token_type
+
+  def __str__(self):
+    return 'Token @%s: \'%s\' type=%s' % (
+        self.start, self.value, self.token_type)
+
+  def Clone(self):
+    """Returns a copy of self."""
+
+    return Token(self.start.Clone(), self.end.Clone(), self.value,
+                 self.token_type)
+
+
+def StartsWith(lines, pos, string):
+  """Returns True iff the given position in lines starts with 'string'."""
+
+  return lines[pos.line][pos.column:].startswith(string)
+
+
+def FindFirstInLine(line, token_table):
+  best_match_start = -1
+  for (regex, token_type) in token_table:
+    m = regex.search(line)
+    if m:
+      # We found regex in lines
+      if best_match_start < 0 or m.start() < best_match_start:
+        best_match_start = m.start()
+        best_match_length = m.end() - m.start()
+        best_match_token_type = token_type
+
+  if best_match_start < 0:
+    return None
+
+  return (best_match_start, best_match_length, best_match_token_type)
+
+
+def FindFirst(lines, token_table, cursor):
+  """Finds the first occurrence of any string in strings in lines."""
+
+  start = cursor.Clone()
+  cur_line_number = cursor.line
+  for line in lines[start.line:]:
+    if cur_line_number == start.line:
+      line = line[start.column:]
+    m = FindFirstInLine(line, token_table)
+    if m:
+      # We found a regex in line.
+      (start_column, length, token_type) = m
+      if cur_line_number == start.line:
+        start_column += start.column
+      found_start = Cursor(cur_line_number, start_column)
+      found_end = found_start + length
+      return MakeToken(lines, found_start, found_end, token_type)
+    cur_line_number += 1
+  # We failed to find str in lines
+  return None
+
+
+def SubString(lines, start, end):
+  """Returns a substring in lines."""
+
+  if end == Eof():
+    end = Cursor(len(lines) - 1, len(lines[-1]))
+
+  if start >= end:
+    return ''
+
+  if start.line == end.line:
+    return lines[start.line][start.column:end.column]
+
+  result_lines = ([lines[start.line][start.column:]] +
+                  lines[start.line + 1:end.line] +
+                  [lines[end.line][:end.column]])
+  return ''.join(result_lines)
+
+
+def StripMetaComments(str):
+  """Strip meta comments from each line in the given string."""
+
+  # First, completely remove lines containing nothing but a meta
+  # comment, including the trailing \n.
+  str = re.sub(r'^\s*\$\$.*\n', '', str)
+
+  # Then, remove meta comments from contentful lines.
+  return re.sub(r'\s*\$\$.*', '', str)
+
+
+def MakeToken(lines, start, end, token_type):
+  """Creates a new instance of Token."""
+
+  return Token(start, end, SubString(lines, start, end), token_type)
+
+
+def ParseToken(lines, pos, regex, token_type):
+  line = lines[pos.line][pos.column:]
+  m = regex.search(line)
+  if m and not m.start():
+    return MakeToken(lines, pos, pos + m.end(), token_type)
+  else:
+    print 'ERROR: %s expected at %s.' % (token_type, pos)
+    sys.exit(1)
+
+
+ID_REGEX = re.compile(r'[_A-Za-z]\w*')
+EQ_REGEX = re.compile(r'=')
+REST_OF_LINE_REGEX = re.compile(r'.*?(?=$|\$\$)')
+OPTIONAL_WHITE_SPACES_REGEX = re.compile(r'\s*')
+WHITE_SPACE_REGEX = re.compile(r'\s')
+DOT_DOT_REGEX = re.compile(r'\.\.')
+
+
+def Skip(lines, pos, regex):
+  line = lines[pos.line][pos.column:]
+  m = re.search(regex, line)
+  if m and not m.start():
+    return pos + m.end()
+  else:
+    return pos
+
+
+def SkipUntil(lines, pos, regex, token_type):
+  line = lines[pos.line][pos.column:]
+  m = re.search(regex, line)
+  if m:
+    return pos + m.start()
+  else:
+    print ('ERROR: %s expected on line %s after column %s.' %
+           (token_type, pos.line + 1, pos.column))
+    sys.exit(1)
+
+
+def ParseExpTokenInParens(lines, pos):
+  def ParseInParens(pos):
+    pos = Skip(lines, pos, OPTIONAL_WHITE_SPACES_REGEX)
+    pos = Skip(lines, pos, r'\(')
+    pos = Parse(pos)
+    pos = Skip(lines, pos, r'\)')
+    return pos
+
+  def Parse(pos):
+    pos = SkipUntil(lines, pos, r'\(|\)', ')')
+    if SubString(lines, pos, pos + 1) == '(':
+      pos = Parse(pos + 1)
+      pos = Skip(lines, pos, r'\)')
+      return Parse(pos)
+    else:
+      return pos
+
+  start = pos.Clone()
+  pos = ParseInParens(pos)
+  return MakeToken(lines, start, pos, 'exp')
+
+
+def RStripNewLineFromToken(token):
+  if token.value.endswith('\n'):
+    return Token(token.start, token.end, token.value[:-1], token.token_type)
+  else:
+    return token
+
+
+def TokenizeLines(lines, pos):
+  while True:
+    found = FindFirst(lines, TOKEN_TABLE, pos)
+    if not found:
+      yield MakeToken(lines, pos, Eof(), 'code')
+      return
+
+    if found.start == pos:
+      prev_token = None
+      prev_token_rstripped = None
+    else:
+      prev_token = MakeToken(lines, pos, found.start, 'code')
+      prev_token_rstripped = RStripNewLineFromToken(prev_token)
+
+    if found.token_type == '$var':
+      if prev_token_rstripped:
+        yield prev_token_rstripped
+      yield found
+      id_token = ParseToken(lines, found.end, ID_REGEX, 'id')
+      yield id_token
+      pos = Skip(lines, id_token.end, OPTIONAL_WHITE_SPACES_REGEX)
+
+      eq_token = ParseToken(lines, pos, EQ_REGEX, '=')
+      yield eq_token
+      pos = Skip(lines, eq_token.end, r'\s*')
+
+      if SubString(lines, pos, pos + 2) != '[[':
+        exp_token = ParseToken(lines, pos, REST_OF_LINE_REGEX, 'exp')
+        yield exp_token
+        pos = Cursor(exp_token.end.line + 1, 0)
+    elif found.token_type == '$for':
+      if prev_token_rstripped:
+        yield prev_token_rstripped
+      yield found
+      id_token = ParseToken(lines, found.end, ID_REGEX, 'id')
+      yield id_token
+      pos = Skip(lines, id_token.end, WHITE_SPACE_REGEX)
+    elif found.token_type == '$range':
+      if prev_token_rstripped:
+        yield prev_token_rstripped
+      yield found
+      id_token = ParseToken(lines, found.end, ID_REGEX, 'id')
+      yield id_token
+      pos = Skip(lines, id_token.end, OPTIONAL_WHITE_SPACES_REGEX)
+
+      dots_pos = SkipUntil(lines, pos, DOT_DOT_REGEX, '..')
+      yield MakeToken(lines, pos, dots_pos, 'exp')
+      yield MakeToken(lines, dots_pos, dots_pos + 2, '..')
+      pos = dots_pos + 2
+      new_pos = Cursor(pos.line + 1, 0)
+      yield MakeToken(lines, pos, new_pos, 'exp')
+      pos = new_pos
+    elif found.token_type == '$':
+      if prev_token:
+        yield prev_token
+      yield found
+      exp_token = ParseExpTokenInParens(lines, found.end)
+      yield exp_token
+      pos = exp_token.end
+    elif (found.token_type == ']]' or found.token_type == '$if' or
+          found.token_type == '$elif' or found.token_type == '$else'):
+      if prev_token_rstripped:
+        yield prev_token_rstripped
+      yield found
+      pos = found.end
+    else:
+      if prev_token:
+        yield prev_token
+      yield found
+      pos = found.end
+
+
+def Tokenize(s):
+  """A generator that yields the tokens in the given string."""
+  if s != '':
+    lines = s.splitlines(True)
+    for token in TokenizeLines(lines, Cursor(0, 0)):
+      yield token
+
+
+class CodeNode:
+  def __init__(self, atomic_code_list=None):
+    self.atomic_code = atomic_code_list
+
+
+class VarNode:
+  def __init__(self, identifier=None, atomic_code=None):
+    self.identifier = identifier
+    self.atomic_code = atomic_code
+
+
+class RangeNode:
+  def __init__(self, identifier=None, exp1=None, exp2=None):
+    self.identifier = identifier
+    self.exp1 = exp1
+    self.exp2 = exp2
+
+
+class ForNode:
+  def __init__(self, identifier=None, sep=None, code=None):
+    self.identifier = identifier
+    self.sep = sep
+    self.code = code
+
+
+class ElseNode:
+  def __init__(self, else_branch=None):
+    self.else_branch = else_branch
+
+
+class IfNode:
+  def __init__(self, exp=None, then_branch=None, else_branch=None):
+    self.exp = exp
+    self.then_branch = then_branch
+    self.else_branch = else_branch
+
+
+class RawCodeNode:
+  def __init__(self, token=None):
+    self.raw_code = token
+
+
+class LiteralDollarNode:
+  def __init__(self, token):
+    self.token = token
+
+
+class ExpNode:
+  def __init__(self, token, python_exp):
+    self.token = token
+    self.python_exp = python_exp
+
+
+def PopFront(a_list):
+  head = a_list[0]
+  a_list[:1] = []
+  return head
+
+
+def PushFront(a_list, elem):
+  a_list[:0] = [elem]
+
+
+def PopToken(a_list, token_type=None):
+  token = PopFront(a_list)
+  if token_type is not None and token.token_type != token_type:
+    print 'ERROR: %s expected at %s' % (token_type, token.start)
+    print 'ERROR: %s found instead' % (token,)
+    sys.exit(1)
+
+  return token
+
+
+def PeekToken(a_list):
+  if not a_list:
+    return None
+
+  return a_list[0]
+
+
+def ParseExpNode(token):
+  python_exp = re.sub(r'([_A-Za-z]\w*)', r'self.GetValue("\1")', token.value)
+  return ExpNode(token, python_exp)
+
+
+def ParseElseNode(tokens):
+  def Pop(token_type=None):
+    return PopToken(tokens, token_type)
+
+  next = PeekToken(tokens)
+  if not next:
+    return None
+  if next.token_type == '$else':
+    Pop('$else')
+    Pop('[[')
+    code_node = ParseCodeNode(tokens)
+    Pop(']]')
+    return code_node
+  elif next.token_type == '$elif':
+    Pop('$elif')
+    exp = Pop('code')
+    Pop('[[')
+    code_node = ParseCodeNode(tokens)
+    Pop(']]')
+    inner_else_node = ParseElseNode(tokens)
+    return CodeNode([IfNode(ParseExpNode(exp), code_node, inner_else_node)])
+  elif not next.value.strip():
+    Pop('code')
+    return ParseElseNode(tokens)
+  else:
+    return None
+
+
+def ParseAtomicCodeNode(tokens):
+  def Pop(token_type=None):
+    return PopToken(tokens, token_type)
+
+  head = PopFront(tokens)
+  t = head.token_type
+  if t == 'code':
+    return RawCodeNode(head)
+  elif t == '$var':
+    id_token = Pop('id')
+    Pop('=')
+    next = PeekToken(tokens)
+    if next.token_type == 'exp':
+      exp_token = Pop()
+      return VarNode(id_token, ParseExpNode(exp_token))
+    Pop('[[')
+    code_node = ParseCodeNode(tokens)
+    Pop(']]')
+    return VarNode(id_token, code_node)
+  elif t == '$for':
+    id_token = Pop('id')
+    next_token = PeekToken(tokens)
+    if next_token.token_type == 'code':
+      sep_token = next_token
+      Pop('code')
+    else:
+      sep_token = None
+    Pop('[[')
+    code_node = ParseCodeNode(tokens)
+    Pop(']]')
+    return ForNode(id_token, sep_token, code_node)
+  elif t == '$if':
+    exp_token = Pop('code')
+    Pop('[[')
+    code_node = ParseCodeNode(tokens)
+    Pop(']]')
+    else_node = ParseElseNode(tokens)
+    return IfNode(ParseExpNode(exp_token), code_node, else_node)
+  elif t == '$range':
+    id_token = Pop('id')
+    exp1_token = Pop('exp')
+    Pop('..')
+    exp2_token = Pop('exp')
+    return RangeNode(id_token, ParseExpNode(exp1_token),
+                     ParseExpNode(exp2_token))
+  elif t == '$id':
+    return ParseExpNode(Token(head.start + 1, head.end, head.value[1:], 'id'))
+  elif t == '$($)':
+    return LiteralDollarNode(head)
+  elif t == '$':
+    exp_token = Pop('exp')
+    return ParseExpNode(exp_token)
+  elif t == '[[':
+    code_node = ParseCodeNode(tokens)
+    Pop(']]')
+    return code_node
+  else:
+    PushFront(tokens, head)
+    return None
+
+
+def ParseCodeNode(tokens):
+  atomic_code_list = []
+  while True:
+    if not tokens:
+      break
+    atomic_code_node = ParseAtomicCodeNode(tokens)
+    if atomic_code_node:
+      atomic_code_list.append(atomic_code_node)
+    else:
+      break
+  return CodeNode(atomic_code_list)
+
+
+def ParseToAST(pump_src_text):
+  """Convert the given Pump source text into an AST."""
+  tokens = list(Tokenize(pump_src_text))
+  code_node = ParseCodeNode(tokens)
+  return code_node
+
+
+class Env:
+  def __init__(self):
+    self.variables = []
+    self.ranges = []
+
+  def Clone(self):
+    clone = Env()
+    clone.variables = self.variables[:]
+    clone.ranges = self.ranges[:]
+    return clone
+
+  def PushVariable(self, var, value):
+    # If value looks like an int, store it as an int.
+    try:
+      int_value = int(value)
+      if ('%s' % int_value) == value:
+        value = int_value
+    except Exception:
+      pass
+    self.variables[:0] = [(var, value)]
+
+  def PopVariable(self):
+    self.variables[:1] = []
+
+  def PushRange(self, var, lower, upper):
+    self.ranges[:0] = [(var, lower, upper)]
+
+  def PopRange(self):
+    self.ranges[:1] = []
+
+  def GetValue(self, identifier):
+    for (var, value) in self.variables:
+      if identifier == var:
+        return value
+
+    print 'ERROR: meta variable %s is undefined.' % (identifier,)
+    sys.exit(1)
+
+  def EvalExp(self, exp):
+    try:
+      result = eval(exp.python_exp)
+    except Exception, e:
+      print 'ERROR: caught exception %s: %s' % (e.__class__.__name__, e)
+      print ('ERROR: failed to evaluate meta expression %s at %s' %
+             (exp.python_exp, exp.token.start))
+      sys.exit(1)
+    return result
+
+  def GetRange(self, identifier):
+    for (var, lower, upper) in self.ranges:
+      if identifier == var:
+        return (lower, upper)
+
+    print 'ERROR: range %s is undefined.' % (identifier,)
+    sys.exit(1)
+
+
+class Output:
+  def __init__(self):
+    self.string = ''
+
+  def GetLastLine(self):
+    index = self.string.rfind('\n')
+    if index < 0:
+      return ''
+
+    return self.string[index + 1:]
+
+  def Append(self, s):
+    self.string += s
+
+
+def RunAtomicCode(env, node, output):
+  if isinstance(node, VarNode):
+    identifier = node.identifier.value.strip()
+    result = Output()
+    RunAtomicCode(env.Clone(), node.atomic_code, result)
+    value = result.string
+    env.PushVariable(identifier, value)
+  elif isinstance(node, RangeNode):
+    identifier = node.identifier.value.strip()
+    lower = int(env.EvalExp(node.exp1))
+    upper = int(env.EvalExp(node.exp2))
+    env.PushRange(identifier, lower, upper)
+  elif isinstance(node, ForNode):
+    identifier = node.identifier.value.strip()
+    if node.sep is None:
+      sep = ''
+    else:
+      sep = node.sep.value
+    (lower, upper) = env.GetRange(identifier)
+    for i in range(lower, upper + 1):
+      new_env = env.Clone()
+      new_env.PushVariable(identifier, i)
+      RunCode(new_env, node.code, output)
+      if i != upper:
+        output.Append(sep)
+  elif isinstance(node, RawCodeNode):
+    output.Append(node.raw_code.value)
+  elif isinstance(node, IfNode):
+    cond = env.EvalExp(node.exp)
+    if cond:
+      RunCode(env.Clone(), node.then_branch, output)
+    elif node.else_branch is not None:
+      RunCode(env.Clone(), node.else_branch, output)
+  elif isinstance(node, ExpNode):
+    value = env.EvalExp(node)
+    output.Append('%s' % (value,))
+  elif isinstance(node, LiteralDollarNode):
+    output.Append('$')
+  elif isinstance(node, CodeNode):
+    RunCode(env.Clone(), node, output)
+  else:
+    print 'BAD'
+    print node
+    sys.exit(1)
+
+
+def RunCode(env, code_node, output):
+  for atomic_code in code_node.atomic_code:
+    RunAtomicCode(env, atomic_code, output)
+
+
+def IsSingleLineComment(cur_line):
+  return '//' in cur_line
+
+
+def IsInPreprocessorDirective(prev_lines, cur_line):
+  if cur_line.lstrip().startswith('#'):
+    return True
+  return prev_lines and prev_lines[-1].endswith('\\')
+
+
+def WrapComment(line, output):
+  loc = line.find('//')
+  before_comment = line[:loc].rstrip()
+  if before_comment == '':
+    indent = loc
+  else:
+    output.append(before_comment)
+    indent = len(before_comment) - len(before_comment.lstrip())
+  prefix = indent*' ' + '// '
+  max_len = 80 - len(prefix)
+  comment = line[loc + 2:].strip()
+  segs = [seg for seg in re.split(r'(\w+\W*)', comment) if seg != '']
+  cur_line = ''
+  for seg in segs:
+    if len((cur_line + seg).rstrip()) < max_len:
+      cur_line += seg
+    else:
+      if cur_line.strip() != '':
+        output.append(prefix + cur_line.rstrip())
+      cur_line = seg.lstrip()
+  if cur_line.strip() != '':
+    output.append(prefix + cur_line.strip())
+
+
+def WrapCode(line, line_concat, output):
+  indent = len(line) - len(line.lstrip())
+  prefix = indent*' '  # Prefix of the current line
+  max_len = 80 - indent - len(line_concat)  # Maximum length of the current line
+  new_prefix = prefix + 4*' '  # Prefix of a continuation line
+  new_max_len = max_len - 4  # Maximum length of a continuation line
+  # Prefers to wrap a line after a ',' or ';'.
+  segs = [seg for seg in re.split(r'([^,;]+[,;]?)', line.strip()) if seg != '']
+  cur_line = ''  # The current line without leading spaces.
+  for seg in segs:
+    # If the line is still too long, wrap at a space.
+    while cur_line == '' and len(seg.strip()) > max_len:
+      seg = seg.lstrip()
+      split_at = seg.rfind(' ', 0, max_len)
+      output.append(prefix + seg[:split_at].strip() + line_concat)
+      seg = seg[split_at + 1:]
+      prefix = new_prefix
+      max_len = new_max_len
+
+    if len((cur_line + seg).rstrip()) < max_len:
+      cur_line = (cur_line + seg).lstrip()
+    else:
+      output.append(prefix + cur_line.rstrip() + line_concat)
+      prefix = new_prefix
+      max_len = new_max_len
+      cur_line = seg.lstrip()
+  if cur_line.strip() != '':
+    output.append(prefix + cur_line.strip())
+
+
+def WrapPreprocessorDirective(line, output):
+  WrapCode(line, ' \\', output)
+
+
+def WrapPlainCode(line, output):
+  WrapCode(line, '', output)
+
+
+def IsMultiLineIWYUPragma(line):
+  return re.search(r'/\* IWYU pragma: ', line)
+
+
+def IsHeaderGuardIncludeOrOneLineIWYUPragma(line):
+  return (re.match(r'^#(ifndef|define|endif\s*//)\s*[\w_]+\s*$', line) or
+          re.match(r'^#include\s', line) or
+          # Don't break IWYU pragmas, either; that causes iwyu.py problems.
+          re.search(r'// IWYU pragma: ', line))
+
+
+def WrapLongLine(line, output):
+  line = line.rstrip()
+  if len(line) <= 80:
+    output.append(line)
+  elif IsSingleLineComment(line):
+    if IsHeaderGuardIncludeOrOneLineIWYUPragma(line):
+      # The style guide made an exception to allow long header guard lines,
+      # includes and IWYU pragmas.
+      output.append(line)
+    else:
+      WrapComment(line, output)
+  elif IsInPreprocessorDirective(output, line):
+    if IsHeaderGuardIncludeOrOneLineIWYUPragma(line):
+      # The style guide made an exception to allow long header guard lines,
+      # includes and IWYU pragmas.
+      output.append(line)
+    else:
+      WrapPreprocessorDirective(line, output)
+  elif IsMultiLineIWYUPragma(line):
+    output.append(line)
+  else:
+    WrapPlainCode(line, output)
+
+
+def BeautifyCode(string):
+  lines = string.splitlines()
+  output = []
+  for line in lines:
+    WrapLongLine(line, output)
+  output2 = [line.rstrip() for line in output]
+  return '\n'.join(output2) + '\n'
+
+
+def ConvertFromPumpSource(src_text):
+  """Return the text generated from the given Pump source text."""
+  ast = ParseToAST(StripMetaComments(src_text))
+  output = Output()
+  RunCode(Env(), ast, output)
+  return BeautifyCode(output.string)
+
+
+def main(argv):
+  if len(argv) == 1:
+    print __doc__
+    sys.exit(1)
+
+  file_path = argv[-1]
+  output_str = ConvertFromPumpSource(file(file_path, 'r').read())
+  if file_path.endswith('.pump'):
+    output_file_path = file_path[:-5]
+  else:
+    output_file_path = '-'
+  if output_file_path == '-':
+    print output_str,
+  else:
+    output_file = file(output_file_path, 'w')
+    output_file.write('// This file was GENERATED by command:\n')
+    output_file.write('//     %s %s\n' %
+                      (os.path.basename(__file__), os.path.basename(file_path)))
+    output_file.write('// DO NOT EDIT BY HAND!!!\n\n')
+    output_file.write(output_str)
+    output_file.close()
+
+
+if __name__ == '__main__':
+  main(sys.argv)
diff --git a/build/_deps/googletest-src/googletest/scripts/release_docs.py b/build/_deps/googletest-src/googletest/scripts/release_docs.py
new file mode 100755
index 0000000000000000000000000000000000000000..1291347f674afd7af849615a75b138d5293f9cf4
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/scripts/release_docs.py
@@ -0,0 +1,158 @@
+#!/usr/bin/env python
+#
+# Copyright 2013 Google Inc. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Script for branching Google Test/Mock wiki pages for a new version.
+
+SYNOPSIS
+       release_docs.py NEW_RELEASE_VERSION
+
+       Google Test and Google Mock's external user documentation is in
+       interlinked wiki files.  When we release a new version of
+       Google Test or Google Mock, we need to branch the wiki files
+       such that users of a specific version of Google Test/Mock can
+       look up documenation relevant for that version.  This script
+       automates that process by:
+
+         - branching the current wiki pages (which document the
+           behavior of the SVN trunk head) to pages for the specified
+           version (e.g. branching FAQ.wiki to V2_6_FAQ.wiki when
+           NEW_RELEASE_VERSION is 2.6);
+         - updating the links in the branched files to point to the branched
+           version (e.g. a link in V2_6_FAQ.wiki that pointed to
+           Primer.wiki#Anchor will now point to V2_6_Primer.wiki#Anchor).
+
+       NOTE: NEW_RELEASE_VERSION must be a NEW version number for
+       which the wiki pages don't yet exist; otherwise you'll get SVN
+       errors like "svn: Path 'V1_7_PumpManual.wiki' is not a
+       directory" when running the script.
+
+EXAMPLE
+       $ cd PATH/TO/GTEST_SVN_WORKSPACE/trunk
+       $ scripts/release_docs.py 2.6  # create wiki pages for v2.6
+       $ svn status                   # verify the file list
+       $ svn diff                     # verify the file contents
+       $ svn commit -m "release wiki pages for v2.6"
+"""
+
+__author__ = 'wan@google.com (Zhanyong Wan)'
+
+import os
+import re
+import sys
+
+import common
+
+
+# Wiki pages that shouldn't be branched for every gtest/gmock release.
+GTEST_UNVERSIONED_WIKIS = ['DevGuide.wiki']
+GMOCK_UNVERSIONED_WIKIS = [
+    'DesignDoc.wiki',
+    'DevGuide.wiki',
+    'KnownIssues.wiki'
+    ]
+
+
+def DropWikiSuffix(wiki_filename):
+  """Removes the .wiki suffix (if any) from the given filename."""
+
+  return (wiki_filename[:-len('.wiki')] if wiki_filename.endswith('.wiki')
+          else wiki_filename)
+
+
+class WikiBrancher(object):
+  """Branches ..."""
+
+  def __init__(self, dot_version):
+    self.project, svn_root_path = common.GetSvnInfo()
+    if self.project not in ('googletest', 'googlemock'):
+      sys.exit('This script must be run in a gtest or gmock SVN workspace.')
+    self.wiki_dir = svn_root_path + '/wiki'
+    # Turn '2.6' to 'V2_6_'.
+    self.version_prefix = 'V' + dot_version.replace('.', '_') + '_'
+    self.files_to_branch = self.GetFilesToBranch()
+    page_names = [DropWikiSuffix(f) for f in self.files_to_branch]
+    # A link to Foo.wiki is in one of the following forms:
+    #   [Foo words]
+    #   [Foo#Anchor words]
+    #   [http://code.google.com/.../wiki/Foo words]
+    #   [http://code.google.com/.../wiki/Foo#Anchor words]
+    # We want to replace 'Foo' with 'V2_6_Foo' in the above cases.
+    self.search_for_re = re.compile(
+        # This regex matches either
+        #   [Foo
+        # or
+        #   /wiki/Foo
+        # followed by a space or a #, where Foo is the name of an
+        # unversioned wiki page.
+        r'(\[|/wiki/)(%s)([ #])' % '|'.join(page_names))
+    self.replace_with = r'\1%s\2\3' % (self.version_prefix,)
+
+  def GetFilesToBranch(self):
+    """Returns a list of .wiki file names that need to be branched."""
+
+    unversioned_wikis = (GTEST_UNVERSIONED_WIKIS if self.project == 'googletest'
+                         else GMOCK_UNVERSIONED_WIKIS)
+    return [f for f in os.listdir(self.wiki_dir)
+            if (f.endswith('.wiki') and
+                not re.match(r'^V\d', f) and  # Excluded versioned .wiki files.
+                f not in unversioned_wikis)]
+
+  def BranchFiles(self):
+    """Branches the .wiki files needed to be branched."""
+
+    print 'Branching %d .wiki files:' % (len(self.files_to_branch),)
+    os.chdir(self.wiki_dir)
+    for f in self.files_to_branch:
+      command = 'svn cp %s %s%s' % (f, self.version_prefix, f)
+      print command
+      os.system(command)
+
+  def UpdateLinksInBranchedFiles(self):
+
+    for f in self.files_to_branch:
+      source_file = os.path.join(self.wiki_dir, f)
+      versioned_file = os.path.join(self.wiki_dir, self.version_prefix + f)
+      print 'Updating links in %s.' % (versioned_file,)
+      text = file(source_file, 'r').read()
+      new_text = self.search_for_re.sub(self.replace_with, text)
+      file(versioned_file, 'w').write(new_text)
+
+
+def main():
+  if len(sys.argv) != 2:
+    sys.exit(__doc__)
+
+  brancher = WikiBrancher(sys.argv[1])
+  brancher.BranchFiles()
+  brancher.UpdateLinksInBranchedFiles()
+
+
+if __name__ == '__main__':
+  main()
diff --git a/build/_deps/googletest-src/googletest/scripts/upload.py b/build/_deps/googletest-src/googletest/scripts/upload.py
new file mode 100755
index 0000000000000000000000000000000000000000..c852e4c91e06ef7c49e038683509ffd9495c820f
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/scripts/upload.py
@@ -0,0 +1,1387 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Tool for uploading diffs from a version control system to the codereview app.
+
+Usage summary: upload.py [options] [-- diff_options]
+
+Diff options are passed to the diff command of the underlying system.
+
+Supported version control systems:
+  Git
+  Mercurial
+  Subversion
+
+It is important for Git/Mercurial users to specify a tree/node/branch to diff
+against by using the '--rev' option.
+"""
+# This code is derived from appcfg.py in the App Engine SDK (open source),
+# and from ASPN recipe #146306.
+
+import cookielib
+import getpass
+import logging
+import md5
+import mimetypes
+import optparse
+import os
+import re
+import socket
+import subprocess
+import sys
+import urllib
+import urllib2
+import urlparse
+
+try:
+  import readline
+except ImportError:
+  pass
+
+# The logging verbosity:
+#  0: Errors only.
+#  1: Status messages.
+#  2: Info logs.
+#  3: Debug logs.
+verbosity = 1
+
+# Max size of patch or base file.
+MAX_UPLOAD_SIZE = 900 * 1024
+
+
+def GetEmail(prompt):
+  """Prompts the user for their email address and returns it.
+
+  The last used email address is saved to a file and offered up as a suggestion
+  to the user. If the user presses enter without typing in anything the last
+  used email address is used. If the user enters a new address, it is saved
+  for next time we prompt.
+
+  """
+  last_email_file_name = os.path.expanduser("~/.last_codereview_email_address")
+  last_email = ""
+  if os.path.exists(last_email_file_name):
+    try:
+      last_email_file = open(last_email_file_name, "r")
+      last_email = last_email_file.readline().strip("\n")
+      last_email_file.close()
+      prompt += " [%s]" % last_email
+    except IOError, e:
+      pass
+  email = raw_input(prompt + ": ").strip()
+  if email:
+    try:
+      last_email_file = open(last_email_file_name, "w")
+      last_email_file.write(email)
+      last_email_file.close()
+    except IOError, e:
+      pass
+  else:
+    email = last_email
+  return email
+
+
+def StatusUpdate(msg):
+  """Print a status message to stdout.
+
+  If 'verbosity' is greater than 0, print the message.
+
+  Args:
+    msg: The string to print.
+  """
+  if verbosity > 0:
+    print msg
+
+
+def ErrorExit(msg):
+  """Print an error message to stderr and exit."""
+  print >>sys.stderr, msg
+  sys.exit(1)
+
+
+class ClientLoginError(urllib2.HTTPError):
+  """Raised to indicate there was an error authenticating with ClientLogin."""
+
+  def __init__(self, url, code, msg, headers, args):
+    urllib2.HTTPError.__init__(self, url, code, msg, headers, None)
+    self.args = args
+    self.reason = args["Error"]
+
+
+class AbstractRpcServer(object):
+  """Provides a common interface for a simple RPC server."""
+
+  def __init__(self, host, auth_function, host_override=None, extra_headers={},
+               save_cookies=False):
+    """Creates a new HttpRpcServer.
+
+    Args:
+      host: The host to send requests to.
+      auth_function: A function that takes no arguments and returns an
+        (email, password) tuple when called. Will be called if authentication
+        is required.
+      host_override: The host header to send to the server (defaults to host).
+      extra_headers: A dict of extra headers to append to every request.
+      save_cookies: If True, save the authentication cookies to local disk.
+        If False, use an in-memory cookiejar instead.  Subclasses must
+        implement this functionality.  Defaults to False.
+    """
+    self.host = host
+    self.host_override = host_override
+    self.auth_function = auth_function
+    self.authenticated = False
+    self.extra_headers = extra_headers
+    self.save_cookies = save_cookies
+    self.opener = self._GetOpener()
+    if self.host_override:
+      logging.info("Server: %s; Host: %s", self.host, self.host_override)
+    else:
+      logging.info("Server: %s", self.host)
+
+  def _GetOpener(self):
+    """Returns an OpenerDirector for making HTTP requests.
+
+    Returns:
+      A urllib2.OpenerDirector object.
+    """
+    raise NotImplementedError()
+
+  def _CreateRequest(self, url, data=None):
+    """Creates a new urllib request."""
+    logging.debug("Creating request for: '%s' with payload:\n%s", url, data)
+    req = urllib2.Request(url, data=data)
+    if self.host_override:
+      req.add_header("Host", self.host_override)
+    for key, value in self.extra_headers.iteritems():
+      req.add_header(key, value)
+    return req
+
+  def _GetAuthToken(self, email, password):
+    """Uses ClientLogin to authenticate the user, returning an auth token.
+
+    Args:
+      email:    The user's email address
+      password: The user's password
+
+    Raises:
+      ClientLoginError: If there was an error authenticating with ClientLogin.
+      HTTPError: If there was some other form of HTTP error.
+
+    Returns:
+      The authentication token returned by ClientLogin.
+    """
+    account_type = "GOOGLE"
+    if self.host.endswith(".google.com"):
+      # Needed for use inside Google.
+      account_type = "HOSTED"
+    req = self._CreateRequest(
+        url="https://www.google.com/accounts/ClientLogin",
+        data=urllib.urlencode({
+            "Email": email,
+            "Passwd": password,
+            "service": "ah",
+            "source": "rietveld-codereview-upload",
+            "accountType": account_type,
+        }),
+    )
+    try:
+      response = self.opener.open(req)
+      response_body = response.read()
+      response_dict = dict(x.split("=")
+                           for x in response_body.split("\n") if x)
+      return response_dict["Auth"]
+    except urllib2.HTTPError, e:
+      if e.code == 403:
+        body = e.read()
+        response_dict = dict(x.split("=", 1) for x in body.split("\n") if x)
+        raise ClientLoginError(req.get_full_url(), e.code, e.msg,
+                               e.headers, response_dict)
+      else:
+        raise
+
+  def _GetAuthCookie(self, auth_token):
+    """Fetches authentication cookies for an authentication token.
+
+    Args:
+      auth_token: The authentication token returned by ClientLogin.
+
+    Raises:
+      HTTPError: If there was an error fetching the authentication cookies.
+    """
+    # This is a dummy value to allow us to identify when we're successful.
+    continue_location = "http://localhost/"
+    args = {"continue": continue_location, "auth": auth_token}
+    req = self._CreateRequest("http://%s/_ah/login?%s" %
+                              (self.host, urllib.urlencode(args)))
+    try:
+      response = self.opener.open(req)
+    except urllib2.HTTPError, e:
+      response = e
+    if (response.code != 302 or
+        response.info()["location"] != continue_location):
+      raise urllib2.HTTPError(req.get_full_url(), response.code, response.msg,
+                              response.headers, response.fp)
+    self.authenticated = True
+
+  def _Authenticate(self):
+    """Authenticates the user.
+
+    The authentication process works as follows:
+     1) We get a username and password from the user
+     2) We use ClientLogin to obtain an AUTH token for the user
+        (see https://developers.google.com/identity/protocols/AuthForInstalledApps).
+     3) We pass the auth token to /_ah/login on the server to obtain an
+        authentication cookie. If login was successful, it tries to redirect
+        us to the URL we provided.
+
+    If we attempt to access the upload API without first obtaining an
+    authentication cookie, it returns a 401 response and directs us to
+    authenticate ourselves with ClientLogin.
+    """
+    for i in range(3):
+      credentials = self.auth_function()
+      try:
+        auth_token = self._GetAuthToken(credentials[0], credentials[1])
+      except ClientLoginError, e:
+        if e.reason == "BadAuthentication":
+          print >>sys.stderr, "Invalid username or password."
+          continue
+        if e.reason == "CaptchaRequired":
+          print >>sys.stderr, (
+              "Please go to\n"
+              "https://www.google.com/accounts/DisplayUnlockCaptcha\n"
+              "and verify you are a human.  Then try again.")
+          break
+        if e.reason == "NotVerified":
+          print >>sys.stderr, "Account not verified."
+          break
+        if e.reason == "TermsNotAgreed":
+          print >>sys.stderr, "User has not agreed to TOS."
+          break
+        if e.reason == "AccountDeleted":
+          print >>sys.stderr, "The user account has been deleted."
+          break
+        if e.reason == "AccountDisabled":
+          print >>sys.stderr, "The user account has been disabled."
+          break
+        if e.reason == "ServiceDisabled":
+          print >>sys.stderr, ("The user's access to the service has been "
+                               "disabled.")
+          break
+        if e.reason == "ServiceUnavailable":
+          print >>sys.stderr, "The service is not available; try again later."
+          break
+        raise
+      self._GetAuthCookie(auth_token)
+      return
+
+  def Send(self, request_path, payload=None,
+           content_type="application/octet-stream",
+           timeout=None,
+           **kwargs):
+    """Sends an RPC and returns the response.
+
+    Args:
+      request_path: The path to send the request to, eg /api/appversion/create.
+      payload: The body of the request, or None to send an empty request.
+      content_type: The Content-Type header to use.
+      timeout: timeout in seconds; default None i.e. no timeout.
+        (Note: for large requests on OS X, the timeout doesn't work right.)
+      kwargs: Any keyword arguments are converted into query string parameters.
+
+    Returns:
+      The response body, as a string.
+    """
+    # TODO: Don't require authentication.  Let the server say
+    # whether it is necessary.
+    if not self.authenticated:
+      self._Authenticate()
+
+    old_timeout = socket.getdefaulttimeout()
+    socket.setdefaulttimeout(timeout)
+    try:
+      tries = 0
+      while True:
+        tries += 1
+        args = dict(kwargs)
+        url = "http://%s%s" % (self.host, request_path)
+        if args:
+          url += "?" + urllib.urlencode(args)
+        req = self._CreateRequest(url=url, data=payload)
+        req.add_header("Content-Type", content_type)
+        try:
+          f = self.opener.open(req)
+          response = f.read()
+          f.close()
+          return response
+        except urllib2.HTTPError, e:
+          if tries > 3:
+            raise
+          elif e.code == 401:
+            self._Authenticate()
+##           elif e.code >= 500 and e.code < 600:
+##             # Server Error - try again.
+##             continue
+          else:
+            raise
+    finally:
+      socket.setdefaulttimeout(old_timeout)
+
+
+class HttpRpcServer(AbstractRpcServer):
+  """Provides a simplified RPC-style interface for HTTP requests."""
+
+  def _Authenticate(self):
+    """Save the cookie jar after authentication."""
+    super(HttpRpcServer, self)._Authenticate()
+    if self.save_cookies:
+      StatusUpdate("Saving authentication cookies to %s" % self.cookie_file)
+      self.cookie_jar.save()
+
+  def _GetOpener(self):
+    """Returns an OpenerDirector that supports cookies and ignores redirects.
+
+    Returns:
+      A urllib2.OpenerDirector object.
+    """
+    opener = urllib2.OpenerDirector()
+    opener.add_handler(urllib2.ProxyHandler())
+    opener.add_handler(urllib2.UnknownHandler())
+    opener.add_handler(urllib2.HTTPHandler())
+    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
+    opener.add_handler(urllib2.HTTPSHandler())
+    opener.add_handler(urllib2.HTTPErrorProcessor())
+    if self.save_cookies:
+      self.cookie_file = os.path.expanduser("~/.codereview_upload_cookies")
+      self.cookie_jar = cookielib.MozillaCookieJar(self.cookie_file)
+      if os.path.exists(self.cookie_file):
+        try:
+          self.cookie_jar.load()
+          self.authenticated = True
+          StatusUpdate("Loaded authentication cookies from %s" %
+                       self.cookie_file)
+        except (cookielib.LoadError, IOError):
+          # Failed to load cookies - just ignore them.
+          pass
+      else:
+        # Create an empty cookie file with mode 600
+        fd = os.open(self.cookie_file, os.O_CREAT, 0600)
+        os.close(fd)
+      # Always chmod the cookie file
+      os.chmod(self.cookie_file, 0600)
+    else:
+      # Don't save cookies across runs of update.py.
+      self.cookie_jar = cookielib.CookieJar()
+    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
+    return opener
+
+
+parser = optparse.OptionParser(usage="%prog [options] [-- diff_options]")
+parser.add_option("-y", "--assume_yes", action="store_true",
+                  dest="assume_yes", default=False,
+                  help="Assume that the answer to yes/no questions is 'yes'.")
+# Logging
+group = parser.add_option_group("Logging options")
+group.add_option("-q", "--quiet", action="store_const", const=0,
+                 dest="verbose", help="Print errors only.")
+group.add_option("-v", "--verbose", action="store_const", const=2,
+                 dest="verbose", default=1,
+                 help="Print info level logs (default).")
+group.add_option("--noisy", action="store_const", const=3,
+                 dest="verbose", help="Print all logs.")
+# Review server
+group = parser.add_option_group("Review server options")
+group.add_option("-s", "--server", action="store", dest="server",
+                 default="codereview.appspot.com",
+                 metavar="SERVER",
+                 help=("The server to upload to. The format is host[:port]. "
+                       "Defaults to 'codereview.appspot.com'."))
+group.add_option("-e", "--email", action="store", dest="email",
+                 metavar="EMAIL", default=None,
+                 help="The username to use. Will prompt if omitted.")
+group.add_option("-H", "--host", action="store", dest="host",
+                 metavar="HOST", default=None,
+                 help="Overrides the Host header sent with all RPCs.")
+group.add_option("--no_cookies", action="store_false",
+                 dest="save_cookies", default=True,
+                 help="Do not save authentication cookies to local disk.")
+# Issue
+group = parser.add_option_group("Issue options")
+group.add_option("-d", "--description", action="store", dest="description",
+                 metavar="DESCRIPTION", default=None,
+                 help="Optional description when creating an issue.")
+group.add_option("-f", "--description_file", action="store",
+                 dest="description_file", metavar="DESCRIPTION_FILE",
+                 default=None,
+                 help="Optional path of a file that contains "
+                      "the description when creating an issue.")
+group.add_option("-r", "--reviewers", action="store", dest="reviewers",
+                 metavar="REVIEWERS", default=None,
+                 help="Add reviewers (comma separated email addresses).")
+group.add_option("--cc", action="store", dest="cc",
+                 metavar="CC", default=None,
+                 help="Add CC (comma separated email addresses).")
+# Upload options
+group = parser.add_option_group("Patch options")
+group.add_option("-m", "--message", action="store", dest="message",
+                 metavar="MESSAGE", default=None,
+                 help="A message to identify the patch. "
+                      "Will prompt if omitted.")
+group.add_option("-i", "--issue", type="int", action="store",
+                 metavar="ISSUE", default=None,
+                 help="Issue number to which to add. Defaults to new issue.")
+group.add_option("--download_base", action="store_true",
+                 dest="download_base", default=False,
+                 help="Base files will be downloaded by the server "
+                 "(side-by-side diffs may not work on files with CRs).")
+group.add_option("--rev", action="store", dest="revision",
+                 metavar="REV", default=None,
+                 help="Branch/tree/revision to diff against (used by DVCS).")
+group.add_option("--send_mail", action="store_true",
+                 dest="send_mail", default=False,
+                 help="Send notification email to reviewers.")
+
+
+def GetRpcServer(options):
+  """Returns an instance of an AbstractRpcServer.
+
+  Returns:
+    A new AbstractRpcServer, on which RPC calls can be made.
+  """
+
+  rpc_server_class = HttpRpcServer
+
+  def GetUserCredentials():
+    """Prompts the user for a username and password."""
+    email = options.email
+    if email is None:
+      email = GetEmail("Email (login for uploading to %s)" % options.server)
+    password = getpass.getpass("Password for %s: " % email)
+    return (email, password)
+
+  # If this is the dev_appserver, use fake authentication.
+  host = (options.host or options.server).lower()
+  if host == "localhost" or host.startswith("localhost:"):
+    email = options.email
+    if email is None:
+      email = "test@example.com"
+      logging.info("Using debug user %s.  Override with --email" % email)
+    server = rpc_server_class(
+        options.server,
+        lambda: (email, "password"),
+        host_override=options.host,
+        extra_headers={"Cookie":
+                       'dev_appserver_login="%s:False"' % email},
+        save_cookies=options.save_cookies)
+    # Don't try to talk to ClientLogin.
+    server.authenticated = True
+    return server
+
+  return rpc_server_class(options.server, GetUserCredentials,
+                          host_override=options.host,
+                          save_cookies=options.save_cookies)
+
+
+def EncodeMultipartFormData(fields, files):
+  """Encode form fields for multipart/form-data.
+
+  Args:
+    fields: A sequence of (name, value) elements for regular form fields.
+    files: A sequence of (name, filename, value) elements for data to be
+           uploaded as files.
+  Returns:
+    (content_type, body) ready for httplib.HTTP instance.
+
+  Source:
+    https://web.archive.org/web/20160116052001/code.activestate.com/recipes/146306
+  """
+  BOUNDARY = '-M-A-G-I-C---B-O-U-N-D-A-R-Y-'
+  CRLF = '\r\n'
+  lines = []
+  for (key, value) in fields:
+    lines.append('--' + BOUNDARY)
+    lines.append('Content-Disposition: form-data; name="%s"' % key)
+    lines.append('')
+    lines.append(value)
+  for (key, filename, value) in files:
+    lines.append('--' + BOUNDARY)
+    lines.append('Content-Disposition: form-data; name="%s"; filename="%s"' %
+             (key, filename))
+    lines.append('Content-Type: %s' % GetContentType(filename))
+    lines.append('')
+    lines.append(value)
+  lines.append('--' + BOUNDARY + '--')
+  lines.append('')
+  body = CRLF.join(lines)
+  content_type = 'multipart/form-data; boundary=%s' % BOUNDARY
+  return content_type, body
+
+
+def GetContentType(filename):
+  """Helper to guess the content-type from the filename."""
+  return mimetypes.guess_type(filename)[0] or 'application/octet-stream'
+
+
+# Use a shell for subcommands on Windows to get a PATH search.
+use_shell = sys.platform.startswith("win")
+
+def RunShellWithReturnCode(command, print_output=False,
+                           universal_newlines=True):
+  """Executes a command and returns the output from stdout and the return code.
+
+  Args:
+    command: Command to execute.
+    print_output: If True, the output is printed to stdout.
+                  If False, both stdout and stderr are ignored.
+    universal_newlines: Use universal_newlines flag (default: True).
+
+  Returns:
+    Tuple (output, return code)
+  """
+  logging.info("Running %s", command)
+  p = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
+                       shell=use_shell, universal_newlines=universal_newlines)
+  if print_output:
+    output_array = []
+    while True:
+      line = p.stdout.readline()
+      if not line:
+        break
+      print line.strip("\n")
+      output_array.append(line)
+    output = "".join(output_array)
+  else:
+    output = p.stdout.read()
+  p.wait()
+  errout = p.stderr.read()
+  if print_output and errout:
+    print >>sys.stderr, errout
+  p.stdout.close()
+  p.stderr.close()
+  return output, p.returncode
+
+
+def RunShell(command, silent_ok=False, universal_newlines=True,
+             print_output=False):
+  data, retcode = RunShellWithReturnCode(command, print_output,
+                                         universal_newlines)
+  if retcode:
+    ErrorExit("Got error status from %s:\n%s" % (command, data))
+  if not silent_ok and not data:
+    ErrorExit("No output from %s" % command)
+  return data
+
+
+class VersionControlSystem(object):
+  """Abstract base class providing an interface to the VCS."""
+
+  def __init__(self, options):
+    """Constructor.
+
+    Args:
+      options: Command line options.
+    """
+    self.options = options
+
+  def GenerateDiff(self, args):
+    """Return the current diff as a string.
+
+    Args:
+      args: Extra arguments to pass to the diff command.
+    """
+    raise NotImplementedError(
+        "abstract method -- subclass %s must override" % self.__class__)
+
+  def GetUnknownFiles(self):
+    """Return a list of files unknown to the VCS."""
+    raise NotImplementedError(
+        "abstract method -- subclass %s must override" % self.__class__)
+
+  def CheckForUnknownFiles(self):
+    """Show an "are you sure?" prompt if there are unknown files."""
+    unknown_files = self.GetUnknownFiles()
+    if unknown_files:
+      print "The following files are not added to version control:"
+      for line in unknown_files:
+        print line
+      prompt = "Are you sure to continue?(y/N) "
+      answer = raw_input(prompt).strip()
+      if answer != "y":
+        ErrorExit("User aborted")
+
+  def GetBaseFile(self, filename):
+    """Get the content of the upstream version of a file.
+
+    Returns:
+      A tuple (base_content, new_content, is_binary, status)
+        base_content: The contents of the base file.
+        new_content: For text files, this is empty.  For binary files, this is
+          the contents of the new file, since the diff output won't contain
+          information to reconstruct the current file.
+        is_binary: True iff the file is binary.
+        status: The status of the file.
+    """
+
+    raise NotImplementedError(
+        "abstract method -- subclass %s must override" % self.__class__)
+
+
+  def GetBaseFiles(self, diff):
+    """Helper that calls GetBase file for each file in the patch.
+
+    Returns:
+      A dictionary that maps from filename to GetBaseFile's tuple.  Filenames
+      are retrieved based on lines that start with "Index:" or
+      "Property changes on:".
+    """
+    files = {}
+    for line in diff.splitlines(True):
+      if line.startswith('Index:') or line.startswith('Property changes on:'):
+        unused, filename = line.split(':', 1)
+        # On Windows if a file has property changes its filename uses '\'
+        # instead of '/'.
+        filename = filename.strip().replace('\\', '/')
+        files[filename] = self.GetBaseFile(filename)
+    return files
+
+
+  def UploadBaseFiles(self, issue, rpc_server, patch_list, patchset, options,
+                      files):
+    """Uploads the base files (and if necessary, the current ones as well)."""
+
+    def UploadFile(filename, file_id, content, is_binary, status, is_base):
+      """Uploads a file to the server."""
+      file_too_large = False
+      if is_base:
+        type = "base"
+      else:
+        type = "current"
+      if len(content) > MAX_UPLOAD_SIZE:
+        print ("Not uploading the %s file for %s because it's too large." %
+               (type, filename))
+        file_too_large = True
+        content = ""
+      checksum = md5.new(content).hexdigest()
+      if options.verbose > 0 and not file_too_large:
+        print "Uploading %s file for %s" % (type, filename)
+      url = "/%d/upload_content/%d/%d" % (int(issue), int(patchset), file_id)
+      form_fields = [("filename", filename),
+                     ("status", status),
+                     ("checksum", checksum),
+                     ("is_binary", str(is_binary)),
+                     ("is_current", str(not is_base)),
+                    ]
+      if file_too_large:
+        form_fields.append(("file_too_large", "1"))
+      if options.email:
+        form_fields.append(("user", options.email))
+      ctype, body = EncodeMultipartFormData(form_fields,
+                                            [("data", filename, content)])
+      response_body = rpc_server.Send(url, body,
+                                      content_type=ctype)
+      if not response_body.startswith("OK"):
+        StatusUpdate("  --> %s" % response_body)
+        sys.exit(1)
+
+    patches = dict()
+    [patches.setdefault(v, k) for k, v in patch_list]
+    for filename in patches.keys():
+      base_content, new_content, is_binary, status = files[filename]
+      file_id_str = patches.get(filename)
+      if file_id_str.find("nobase") != -1:
+        base_content = None
+        file_id_str = file_id_str[file_id_str.rfind("_") + 1:]
+      file_id = int(file_id_str)
+      if base_content != None:
+        UploadFile(filename, file_id, base_content, is_binary, status, True)
+      if new_content != None:
+        UploadFile(filename, file_id, new_content, is_binary, status, False)
+
+  def IsImage(self, filename):
+    """Returns true if the filename has an image extension."""
+    mimetype =  mimetypes.guess_type(filename)[0]
+    if not mimetype:
+      return False
+    return mimetype.startswith("image/")
+
+
+class SubversionVCS(VersionControlSystem):
+  """Implementation of the VersionControlSystem interface for Subversion."""
+
+  def __init__(self, options):
+    super(SubversionVCS, self).__init__(options)
+    if self.options.revision:
+      match = re.match(r"(\d+)(:(\d+))?", self.options.revision)
+      if not match:
+        ErrorExit("Invalid Subversion revision %s." % self.options.revision)
+      self.rev_start = match.group(1)
+      self.rev_end = match.group(3)
+    else:
+      self.rev_start = self.rev_end = None
+    # Cache output from "svn list -r REVNO dirname".
+    # Keys: dirname, Values: 2-tuple (output for start rev and end rev).
+    self.svnls_cache = {}
+    # SVN base URL is required to fetch files deleted in an older revision.
+    # Result is cached to not guess it over and over again in GetBaseFile().
+    required = self.options.download_base or self.options.revision is not None
+    self.svn_base = self._GuessBase(required)
+
+  def GuessBase(self, required):
+    """Wrapper for _GuessBase."""
+    return self.svn_base
+
+  def _GuessBase(self, required):
+    """Returns the SVN base URL.
+
+    Args:
+      required: If true, exits if the url can't be guessed, otherwise None is
+        returned.
+    """
+    info = RunShell(["svn", "info"])
+    for line in info.splitlines():
+      words = line.split()
+      if len(words) == 2 and words[0] == "URL:":
+        url = words[1]
+        scheme, netloc, path, params, query, fragment = urlparse.urlparse(url)
+        username, netloc = urllib.splituser(netloc)
+        if username:
+          logging.info("Removed username from base URL")
+        if netloc.endswith("svn.python.org"):
+          if netloc == "svn.python.org":
+            if path.startswith("/projects/"):
+              path = path[9:]
+          elif netloc != "pythondev@svn.python.org":
+            ErrorExit("Unrecognized Python URL: %s" % url)
+          base = "http://svn.python.org/view/*checkout*%s/" % path
+          logging.info("Guessed Python base = %s", base)
+        elif netloc.endswith("svn.collab.net"):
+          if path.startswith("/repos/"):
+            path = path[6:]
+          base = "http://svn.collab.net/viewvc/*checkout*%s/" % path
+          logging.info("Guessed CollabNet base = %s", base)
+        elif netloc.endswith(".googlecode.com"):
+          path = path + "/"
+          base = urlparse.urlunparse(("http", netloc, path, params,
+                                      query, fragment))
+          logging.info("Guessed Google Code base = %s", base)
+        else:
+          path = path + "/"
+          base = urlparse.urlunparse((scheme, netloc, path, params,
+                                      query, fragment))
+          logging.info("Guessed base = %s", base)
+        return base
+    if required:
+      ErrorExit("Can't find URL in output from svn info")
+    return None
+
+  def GenerateDiff(self, args):
+    cmd = ["svn", "diff"]
+    if self.options.revision:
+      cmd += ["-r", self.options.revision]
+    cmd.extend(args)
+    data = RunShell(cmd)
+    count = 0
+    for line in data.splitlines():
+      if line.startswith("Index:") or line.startswith("Property changes on:"):
+        count += 1
+        logging.info(line)
+    if not count:
+      ErrorExit("No valid patches found in output from svn diff")
+    return data
+
+  def _CollapseKeywords(self, content, keyword_str):
+    """Collapses SVN keywords."""
+    # svn cat translates keywords but svn diff doesn't. As a result of this
+    # behavior patching.PatchChunks() fails with a chunk mismatch error.
+    # This part was originally written by the Review Board development team
+    # who had the same problem (https://reviews.reviewboard.org/r/276/).
+    # Mapping of keywords to known aliases
+    svn_keywords = {
+      # Standard keywords
+      'Date':                ['Date', 'LastChangedDate'],
+      'Revision':            ['Revision', 'LastChangedRevision', 'Rev'],
+      'Author':              ['Author', 'LastChangedBy'],
+      'HeadURL':             ['HeadURL', 'URL'],
+      'Id':                  ['Id'],
+
+      # Aliases
+      'LastChangedDate':     ['LastChangedDate', 'Date'],
+      'LastChangedRevision': ['LastChangedRevision', 'Rev', 'Revision'],
+      'LastChangedBy':       ['LastChangedBy', 'Author'],
+      'URL':                 ['URL', 'HeadURL'],
+    }
+
+    def repl(m):
+       if m.group(2):
+         return "$%s::%s$" % (m.group(1), " " * len(m.group(3)))
+       return "$%s$" % m.group(1)
+    keywords = [keyword
+                for name in keyword_str.split(" ")
+                for keyword in svn_keywords.get(name, [])]
+    return re.sub(r"\$(%s):(:?)([^\$]+)\$" % '|'.join(keywords), repl, content)
+
+  def GetUnknownFiles(self):
+    status = RunShell(["svn", "status", "--ignore-externals"], silent_ok=True)
+    unknown_files = []
+    for line in status.split("\n"):
+      if line and line[0] == "?":
+        unknown_files.append(line)
+    return unknown_files
+
+  def ReadFile(self, filename):
+    """Returns the contents of a file."""
+    file = open(filename, 'rb')
+    result = ""
+    try:
+      result = file.read()
+    finally:
+      file.close()
+    return result
+
+  def GetStatus(self, filename):
+    """Returns the status of a file."""
+    if not self.options.revision:
+      status = RunShell(["svn", "status", "--ignore-externals", filename])
+      if not status:
+        ErrorExit("svn status returned no output for %s" % filename)
+      status_lines = status.splitlines()
+      # If file is in a cl, the output will begin with
+      # "\n--- Changelist 'cl_name':\n".  See
+      # https://web.archive.org/web/20090918234815/svn.collab.net/repos/svn/trunk/notes/changelist-design.txt
+      if (len(status_lines) == 3 and
+          not status_lines[0] and
+          status_lines[1].startswith("--- Changelist")):
+        status = status_lines[2]
+      else:
+        status = status_lines[0]
+    # If we have a revision to diff against we need to run "svn list"
+    # for the old and the new revision and compare the results to get
+    # the correct status for a file.
+    else:
+      dirname, relfilename = os.path.split(filename)
+      if dirname not in self.svnls_cache:
+        cmd = ["svn", "list", "-r", self.rev_start, dirname or "."]
+        out, returncode = RunShellWithReturnCode(cmd)
+        if returncode:
+          ErrorExit("Failed to get status for %s." % filename)
+        old_files = out.splitlines()
+        args = ["svn", "list"]
+        if self.rev_end:
+          args += ["-r", self.rev_end]
+        cmd = args + [dirname or "."]
+        out, returncode = RunShellWithReturnCode(cmd)
+        if returncode:
+          ErrorExit("Failed to run command %s" % cmd)
+        self.svnls_cache[dirname] = (old_files, out.splitlines())
+      old_files, new_files = self.svnls_cache[dirname]
+      if relfilename in old_files and relfilename not in new_files:
+        status = "D   "
+      elif relfilename in old_files and relfilename in new_files:
+        status = "M   "
+      else:
+        status = "A   "
+    return status
+
+  def GetBaseFile(self, filename):
+    status = self.GetStatus(filename)
+    base_content = None
+    new_content = None
+
+    # If a file is copied its status will be "A  +", which signifies
+    # "addition-with-history".  See "svn st" for more information.  We need to
+    # upload the original file or else diff parsing will fail if the file was
+    # edited.
+    if status[0] == "A" and status[3] != "+":
+      # We'll need to upload the new content if we're adding a binary file
+      # since diff's output won't contain it.
+      mimetype = RunShell(["svn", "propget", "svn:mime-type", filename],
+                          silent_ok=True)
+      base_content = ""
+      is_binary = mimetype and not mimetype.startswith("text/")
+      if is_binary and self.IsImage(filename):
+        new_content = self.ReadFile(filename)
+    elif (status[0] in ("M", "D", "R") or
+          (status[0] == "A" and status[3] == "+") or  # Copied file.
+          (status[0] == " " and status[1] == "M")):  # Property change.
+      args = []
+      if self.options.revision:
+        url = "%s/%s@%s" % (self.svn_base, filename, self.rev_start)
+      else:
+        # Don't change filename, it's needed later.
+        url = filename
+        args += ["-r", "BASE"]
+      cmd = ["svn"] + args + ["propget", "svn:mime-type", url]
+      mimetype, returncode = RunShellWithReturnCode(cmd)
+      if returncode:
+        # File does not exist in the requested revision.
+        # Reset mimetype, it contains an error message.
+        mimetype = ""
+      get_base = False
+      is_binary = mimetype and not mimetype.startswith("text/")
+      if status[0] == " ":
+        # Empty base content just to force an upload.
+        base_content = ""
+      elif is_binary:
+        if self.IsImage(filename):
+          get_base = True
+          if status[0] == "M":
+            if not self.rev_end:
+              new_content = self.ReadFile(filename)
+            else:
+              url = "%s/%s@%s" % (self.svn_base, filename, self.rev_end)
+              new_content = RunShell(["svn", "cat", url],
+                                     universal_newlines=True, silent_ok=True)
+        else:
+          base_content = ""
+      else:
+        get_base = True
+
+      if get_base:
+        if is_binary:
+          universal_newlines = False
+        else:
+          universal_newlines = True
+        if self.rev_start:
+          # "svn cat -r REV delete_file.txt" doesn't work. cat requires
+          # the full URL with "@REV" appended instead of using "-r" option.
+          url = "%s/%s@%s" % (self.svn_base, filename, self.rev_start)
+          base_content = RunShell(["svn", "cat", url],
+                                  universal_newlines=universal_newlines,
+                                  silent_ok=True)
+        else:
+          base_content = RunShell(["svn", "cat", filename],
+                                  universal_newlines=universal_newlines,
+                                  silent_ok=True)
+        if not is_binary:
+          args = []
+          if self.rev_start:
+            url = "%s/%s@%s" % (self.svn_base, filename, self.rev_start)
+          else:
+            url = filename
+            args += ["-r", "BASE"]
+          cmd = ["svn"] + args + ["propget", "svn:keywords", url]
+          keywords, returncode = RunShellWithReturnCode(cmd)
+          if keywords and not returncode:
+            base_content = self._CollapseKeywords(base_content, keywords)
+    else:
+      StatusUpdate("svn status returned unexpected output: %s" % status)
+      sys.exit(1)
+    return base_content, new_content, is_binary, status[0:5]
+
+
+class GitVCS(VersionControlSystem):
+  """Implementation of the VersionControlSystem interface for Git."""
+
+  def __init__(self, options):
+    super(GitVCS, self).__init__(options)
+    # Map of filename -> hash of base file.
+    self.base_hashes = {}
+
+  def GenerateDiff(self, extra_args):
+    # This is more complicated than svn's GenerateDiff because we must convert
+    # the diff output to include an svn-style "Index:" line as well as record
+    # the hashes of the base files, so we can upload them along with our diff.
+    if self.options.revision:
+      extra_args = [self.options.revision] + extra_args
+    gitdiff = RunShell(["git", "diff", "--full-index"] + extra_args)
+    svndiff = []
+    filecount = 0
+    filename = None
+    for line in gitdiff.splitlines():
+      match = re.match(r"diff --git a/(.*) b/.*$", line)
+      if match:
+        filecount += 1
+        filename = match.group(1)
+        svndiff.append("Index: %s\n" % filename)
+      else:
+        # The "index" line in a git diff looks like this (long hashes elided):
+        #   index 82c0d44..b2cee3f 100755
+        # We want to save the left hash, as that identifies the base file.
+        match = re.match(r"index (\w+)\.\.", line)
+        if match:
+          self.base_hashes[filename] = match.group(1)
+      svndiff.append(line + "\n")
+    if not filecount:
+      ErrorExit("No valid patches found in output from git diff")
+    return "".join(svndiff)
+
+  def GetUnknownFiles(self):
+    status = RunShell(["git", "ls-files", "--exclude-standard", "--others"],
+                      silent_ok=True)
+    return status.splitlines()
+
+  def GetBaseFile(self, filename):
+    hash = self.base_hashes[filename]
+    base_content = None
+    new_content = None
+    is_binary = False
+    if hash == "0" * 40:  # All-zero hash indicates no base file.
+      status = "A"
+      base_content = ""
+    else:
+      status = "M"
+      base_content, returncode = RunShellWithReturnCode(["git", "show", hash])
+      if returncode:
+        ErrorExit("Got error status from 'git show %s'" % hash)
+    return (base_content, new_content, is_binary, status)
+
+
+class MercurialVCS(VersionControlSystem):
+  """Implementation of the VersionControlSystem interface for Mercurial."""
+
+  def __init__(self, options, repo_dir):
+    super(MercurialVCS, self).__init__(options)
+    # Absolute path to repository (we can be in a subdir)
+    self.repo_dir = os.path.normpath(repo_dir)
+    # Compute the subdir
+    cwd = os.path.normpath(os.getcwd())
+    assert cwd.startswith(self.repo_dir)
+    self.subdir = cwd[len(self.repo_dir):].lstrip(r"\/")
+    if self.options.revision:
+      self.base_rev = self.options.revision
+    else:
+      self.base_rev = RunShell(["hg", "parent", "-q"]).split(':')[1].strip()
+
+  def _GetRelPath(self, filename):
+    """Get relative path of a file according to the current directory,
+    given its logical path in the repo."""
+    assert filename.startswith(self.subdir), filename
+    return filename[len(self.subdir):].lstrip(r"\/")
+
+  def GenerateDiff(self, extra_args):
+    # If no file specified, restrict to the current subdir
+    extra_args = extra_args or ["."]
+    cmd = ["hg", "diff", "--git", "-r", self.base_rev] + extra_args
+    data = RunShell(cmd, silent_ok=True)
+    svndiff = []
+    filecount = 0
+    for line in data.splitlines():
+      m = re.match("diff --git a/(\S+) b/(\S+)", line)
+      if m:
+        # Modify line to make it look like as it comes from svn diff.
+        # With this modification no changes on the server side are required
+        # to make upload.py work with Mercurial repos.
+        # NOTE: for proper handling of moved/copied files, we have to use
+        # the second filename.
+        filename = m.group(2)
+        svndiff.append("Index: %s" % filename)
+        svndiff.append("=" * 67)
+        filecount += 1
+        logging.info(line)
+      else:
+        svndiff.append(line)
+    if not filecount:
+      ErrorExit("No valid patches found in output from hg diff")
+    return "\n".join(svndiff) + "\n"
+
+  def GetUnknownFiles(self):
+    """Return a list of files unknown to the VCS."""
+    args = []
+    status = RunShell(["hg", "status", "--rev", self.base_rev, "-u", "."],
+        silent_ok=True)
+    unknown_files = []
+    for line in status.splitlines():
+      st, fn = line.split(" ", 1)
+      if st == "?":
+        unknown_files.append(fn)
+    return unknown_files
+
+  def GetBaseFile(self, filename):
+    # "hg status" and "hg cat" both take a path relative to the current subdir
+    # rather than to the repo root, but "hg diff" has given us the full path
+    # to the repo root.
+    base_content = ""
+    new_content = None
+    is_binary = False
+    oldrelpath = relpath = self._GetRelPath(filename)
+    # "hg status -C" returns two lines for moved/copied files, one otherwise
+    out = RunShell(["hg", "status", "-C", "--rev", self.base_rev, relpath])
+    out = out.splitlines()
+    # HACK: strip error message about missing file/directory if it isn't in
+    # the working copy
+    if out[0].startswith('%s: ' % relpath):
+      out = out[1:]
+    if len(out) > 1:
+      # Moved/copied => considered as modified, use old filename to
+      # retrieve base contents
+      oldrelpath = out[1].strip()
+      status = "M"
+    else:
+      status, _ = out[0].split(' ', 1)
+    if status != "A":
+      base_content = RunShell(["hg", "cat", "-r", self.base_rev, oldrelpath],
+        silent_ok=True)
+      is_binary = "\0" in base_content  # Mercurial's heuristic
+    if status != "R":
+      new_content = open(relpath, "rb").read()
+      is_binary = is_binary or "\0" in new_content
+    if is_binary and base_content:
+      # Fetch again without converting newlines
+      base_content = RunShell(["hg", "cat", "-r", self.base_rev, oldrelpath],
+        silent_ok=True, universal_newlines=False)
+    if not is_binary or not self.IsImage(relpath):
+      new_content = None
+    return base_content, new_content, is_binary, status
+
+
+# NOTE: The SplitPatch function is duplicated in engine.py, keep them in sync.
+def SplitPatch(data):
+  """Splits a patch into separate pieces for each file.
+
+  Args:
+    data: A string containing the output of svn diff.
+
+  Returns:
+    A list of 2-tuple (filename, text) where text is the svn diff output
+      pertaining to filename.
+  """
+  patches = []
+  filename = None
+  diff = []
+  for line in data.splitlines(True):
+    new_filename = None
+    if line.startswith('Index:'):
+      unused, new_filename = line.split(':', 1)
+      new_filename = new_filename.strip()
+    elif line.startswith('Property changes on:'):
+      unused, temp_filename = line.split(':', 1)
+      # When a file is modified, paths use '/' between directories, however
+      # when a property is modified '\' is used on Windows.  Make them the same
+      # otherwise the file shows up twice.
+      temp_filename = temp_filename.strip().replace('\\', '/')
+      if temp_filename != filename:
+        # File has property changes but no modifications, create a new diff.
+        new_filename = temp_filename
+    if new_filename:
+      if filename and diff:
+        patches.append((filename, ''.join(diff)))
+      filename = new_filename
+      diff = [line]
+      continue
+    if diff is not None:
+      diff.append(line)
+  if filename and diff:
+    patches.append((filename, ''.join(diff)))
+  return patches
+
+
+def UploadSeparatePatches(issue, rpc_server, patchset, data, options):
+  """Uploads a separate patch for each file in the diff output.
+
+  Returns a list of [patch_key, filename] for each file.
+  """
+  patches = SplitPatch(data)
+  rv = []
+  for patch in patches:
+    if len(patch[1]) > MAX_UPLOAD_SIZE:
+      print ("Not uploading the patch for " + patch[0] +
+             " because the file is too large.")
+      continue
+    form_fields = [("filename", patch[0])]
+    if not options.download_base:
+      form_fields.append(("content_upload", "1"))
+    files = [("data", "data.diff", patch[1])]
+    ctype, body = EncodeMultipartFormData(form_fields, files)
+    url = "/%d/upload_patch/%d" % (int(issue), int(patchset))
+    print "Uploading patch for " + patch[0]
+    response_body = rpc_server.Send(url, body, content_type=ctype)
+    lines = response_body.splitlines()
+    if not lines or lines[0] != "OK":
+      StatusUpdate("  --> %s" % response_body)
+      sys.exit(1)
+    rv.append([lines[1], patch[0]])
+  return rv
+
+
+def GuessVCS(options):
+  """Helper to guess the version control system.
+
+  This examines the current directory, guesses which VersionControlSystem
+  we're using, and returns an instance of the appropriate class.  Exit with an
+  error if we can't figure it out.
+
+  Returns:
+    A VersionControlSystem instance. Exits if the VCS can't be guessed.
+  """
+  # Mercurial has a command to get the base directory of a repository
+  # Try running it, but don't die if we don't have hg installed.
+  # NOTE: we try Mercurial first as it can sit on top of an SVN working copy.
+  try:
+    out, returncode = RunShellWithReturnCode(["hg", "root"])
+    if returncode == 0:
+      return MercurialVCS(options, out.strip())
+  except OSError, (errno, message):
+    if errno != 2:  # ENOENT -- they don't have hg installed.
+      raise
+
+  # Subversion has a .svn in all working directories.
+  if os.path.isdir('.svn'):
+    logging.info("Guessed VCS = Subversion")
+    return SubversionVCS(options)
+
+  # Git has a command to test if you're in a git tree.
+  # Try running it, but don't die if we don't have git installed.
+  try:
+    out, returncode = RunShellWithReturnCode(["git", "rev-parse",
+                                              "--is-inside-work-tree"])
+    if returncode == 0:
+      return GitVCS(options)
+  except OSError, (errno, message):
+    if errno != 2:  # ENOENT -- they don't have git installed.
+      raise
+
+  ErrorExit(("Could not guess version control system. "
+             "Are you in a working copy directory?"))
+
+
+def RealMain(argv, data=None):
+  """The real main function.
+
+  Args:
+    argv: Command line arguments.
+    data: Diff contents. If None (default) the diff is generated by
+      the VersionControlSystem implementation returned by GuessVCS().
+
+  Returns:
+    A 2-tuple (issue id, patchset id).
+    The patchset id is None if the base files are not uploaded by this
+    script (applies only to SVN checkouts).
+  """
+  logging.basicConfig(format=("%(asctime).19s %(levelname)s %(filename)s:"
+                              "%(lineno)s %(message)s "))
+  os.environ['LC_ALL'] = 'C'
+  options, args = parser.parse_args(argv[1:])
+  global verbosity
+  verbosity = options.verbose
+  if verbosity >= 3:
+    logging.getLogger().setLevel(logging.DEBUG)
+  elif verbosity >= 2:
+    logging.getLogger().setLevel(logging.INFO)
+  vcs = GuessVCS(options)
+  if isinstance(vcs, SubversionVCS):
+    # base field is only allowed for Subversion.
+    # Note: Fetching base files may become deprecated in future releases.
+    base = vcs.GuessBase(options.download_base)
+  else:
+    base = None
+  if not base and options.download_base:
+    options.download_base = True
+    logging.info("Enabled upload of base file")
+  if not options.assume_yes:
+    vcs.CheckForUnknownFiles()
+  if data is None:
+    data = vcs.GenerateDiff(args)
+  files = vcs.GetBaseFiles(data)
+  if verbosity >= 1:
+    print "Upload server:", options.server, "(change with -s/--server)"
+  if options.issue:
+    prompt = "Message describing this patch set: "
+  else:
+    prompt = "New issue subject: "
+  message = options.message or raw_input(prompt).strip()
+  if not message:
+    ErrorExit("A non-empty message is required")
+  rpc_server = GetRpcServer(options)
+  form_fields = [("subject", message)]
+  if base:
+    form_fields.append(("base", base))
+  if options.issue:
+    form_fields.append(("issue", str(options.issue)))
+  if options.email:
+    form_fields.append(("user", options.email))
+  if options.reviewers:
+    for reviewer in options.reviewers.split(','):
+      if "@" in reviewer and not reviewer.split("@")[1].count(".") == 1:
+        ErrorExit("Invalid email address: %s" % reviewer)
+    form_fields.append(("reviewers", options.reviewers))
+  if options.cc:
+    for cc in options.cc.split(','):
+      if "@" in cc and not cc.split("@")[1].count(".") == 1:
+        ErrorExit("Invalid email address: %s" % cc)
+    form_fields.append(("cc", options.cc))
+  description = options.description
+  if options.description_file:
+    if options.description:
+      ErrorExit("Can't specify description and description_file")
+    file = open(options.description_file, 'r')
+    description = file.read()
+    file.close()
+  if description:
+    form_fields.append(("description", description))
+  # Send a hash of all the base file so the server can determine if a copy
+  # already exists in an earlier patchset.
+  base_hashes = ""
+  for file, info in files.iteritems():
+    if not info[0] is None:
+      checksum = md5.new(info[0]).hexdigest()
+      if base_hashes:
+        base_hashes += "|"
+      base_hashes += checksum + ":" + file
+  form_fields.append(("base_hashes", base_hashes))
+  # If we're uploading base files, don't send the email before the uploads, so
+  # that it contains the file status.
+  if options.send_mail and options.download_base:
+    form_fields.append(("send_mail", "1"))
+  if not options.download_base:
+    form_fields.append(("content_upload", "1"))
+  if len(data) > MAX_UPLOAD_SIZE:
+    print "Patch is large, so uploading file patches separately."
+    uploaded_diff_file = []
+    form_fields.append(("separate_patches", "1"))
+  else:
+    uploaded_diff_file = [("data", "data.diff", data)]
+  ctype, body = EncodeMultipartFormData(form_fields, uploaded_diff_file)
+  response_body = rpc_server.Send("/upload", body, content_type=ctype)
+  patchset = None
+  if not options.download_base or not uploaded_diff_file:
+    lines = response_body.splitlines()
+    if len(lines) >= 2:
+      msg = lines[0]
+      patchset = lines[1].strip()
+      patches = [x.split(" ", 1) for x in lines[2:]]
+    else:
+      msg = response_body
+  else:
+    msg = response_body
+  StatusUpdate(msg)
+  if not response_body.startswith("Issue created.") and \
+  not response_body.startswith("Issue updated."):
+    sys.exit(0)
+  issue = msg[msg.rfind("/")+1:]
+
+  if not uploaded_diff_file:
+    result = UploadSeparatePatches(issue, rpc_server, patchset, data, options)
+    if not options.download_base:
+      patches = result
+
+  if not options.download_base:
+    vcs.UploadBaseFiles(issue, rpc_server, patches, patchset, options, files)
+    if options.send_mail:
+      rpc_server.Send("/" + issue + "/mail", payload="")
+  return issue, patchset
+
+
+def main():
+  try:
+    RealMain(sys.argv)
+  except KeyboardInterrupt:
+    print
+    StatusUpdate("Interrupted.")
+    sys.exit(1)
+
+
+if __name__ == "__main__":
+  main()
diff --git a/build/_deps/googletest-src/googletest/scripts/upload_gtest.py b/build/_deps/googletest-src/googletest/scripts/upload_gtest.py
new file mode 100755
index 0000000000000000000000000000000000000000..be19ae80911c3ad67e1273751c747cd915528f91
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/scripts/upload_gtest.py
@@ -0,0 +1,78 @@
+#!/usr/bin/env python
+#
+# Copyright 2009, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""upload_gtest.py v0.1.0 -- uploads a Google Test patch for review.
+
+This simple wrapper passes all command line flags and
+--cc=googletestframework@googlegroups.com to upload.py.
+
+USAGE: upload_gtest.py [options for upload.py]
+"""
+
+__author__ = 'wan@google.com (Zhanyong Wan)'
+
+import os
+import sys
+
+CC_FLAG = '--cc='
+GTEST_GROUP = 'googletestframework@googlegroups.com'
+
+
+def main():
+  # Finds the path to upload.py, assuming it is in the same directory
+  # as this file.
+  my_dir = os.path.dirname(os.path.abspath(__file__))
+  upload_py_path = os.path.join(my_dir, 'upload.py')
+
+  # Adds Google Test discussion group to the cc line if it's not there
+  # already.
+  upload_py_argv = [upload_py_path]
+  found_cc_flag = False
+  for arg in sys.argv[1:]:
+    if arg.startswith(CC_FLAG):
+      found_cc_flag = True
+      cc_line = arg[len(CC_FLAG):]
+      cc_list = [addr for addr in cc_line.split(',') if addr]
+      if GTEST_GROUP not in cc_list:
+        cc_list.append(GTEST_GROUP)
+      upload_py_argv.append(CC_FLAG + ','.join(cc_list))
+    else:
+      upload_py_argv.append(arg)
+
+  if not found_cc_flag:
+    upload_py_argv.append(CC_FLAG + GTEST_GROUP)
+
+  # Invokes upload.py with the modified command line flags.
+  os.execv(upload_py_path, upload_py_argv)
+
+
+if __name__ == '__main__':
+  main()
diff --git a/build/_deps/googletest-src/googletest/src/gtest-all.cc b/build/_deps/googletest-src/googletest/src/gtest-all.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ad292905cf381d69eba9008f5196cf6477a56c1a
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/src/gtest-all.cc
@@ -0,0 +1,48 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Google C++ Testing and Mocking Framework (Google Test)
+//
+// Sometimes it's desirable to build Google Test by compiling a single file.
+// This file serves this purpose.
+
+// This line ensures that gtest.h can be compiled on its own, even
+// when it's fused.
+#include "gtest/gtest.h"
+
+// The following lines pull in the real gtest *.cc files.
+#include "src/gtest.cc"
+#include "src/gtest-death-test.cc"
+#include "src/gtest-filepath.cc"
+#include "src/gtest-matchers.cc"
+#include "src/gtest-port.cc"
+#include "src/gtest-printers.cc"
+#include "src/gtest-test-part.cc"
+#include "src/gtest-typed-test.cc"
diff --git a/build/_deps/googletest-src/googletest/src/gtest-death-test.cc b/build/_deps/googletest-src/googletest/src/gtest-death-test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..da09a1cfc23a550b14251ac0e0ba9a6a8375c535
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/src/gtest-death-test.cc
@@ -0,0 +1,1653 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// This file implements death tests.
+
+#include "gtest/gtest-death-test.h"
+
+#include <utility>
+
+#include "gtest/internal/gtest-port.h"
+#include "gtest/internal/custom/gtest.h"
+
+#if GTEST_HAS_DEATH_TEST
+
+# if GTEST_OS_MAC
+#  include <crt_externs.h>
+# endif  // GTEST_OS_MAC
+
+# include <errno.h>
+# include <fcntl.h>
+# include <limits.h>
+
+# if GTEST_OS_LINUX
+#  include <signal.h>
+# endif  // GTEST_OS_LINUX
+
+# include <stdarg.h>
+
+# if GTEST_OS_WINDOWS
+#  include <windows.h>
+# else
+#  include <sys/mman.h>
+#  include <sys/wait.h>
+# endif  // GTEST_OS_WINDOWS
+
+# if GTEST_OS_QNX
+#  include <spawn.h>
+# endif  // GTEST_OS_QNX
+
+# if GTEST_OS_FUCHSIA
+#  include <lib/fdio/fd.h>
+#  include <lib/fdio/io.h>
+#  include <lib/fdio/spawn.h>
+#  include <lib/zx/channel.h>
+#  include <lib/zx/port.h>
+#  include <lib/zx/process.h>
+#  include <lib/zx/socket.h>
+#  include <zircon/processargs.h>
+#  include <zircon/syscalls.h>
+#  include <zircon/syscalls/policy.h>
+#  include <zircon/syscalls/port.h>
+# endif  // GTEST_OS_FUCHSIA
+
+#endif  // GTEST_HAS_DEATH_TEST
+
+#include "gtest/gtest-message.h"
+#include "gtest/internal/gtest-string.h"
+#include "src/gtest-internal-inl.h"
+
+namespace testing {
+
+// Constants.
+
+// The default death test style.
+//
+// This is defined in internal/gtest-port.h as "fast", but can be overridden by
+// a definition in internal/custom/gtest-port.h. The recommended value, which is
+// used internally at Google, is "threadsafe".
+static const char kDefaultDeathTestStyle[] = GTEST_DEFAULT_DEATH_TEST_STYLE;
+
+GTEST_DEFINE_string_(
+    death_test_style,
+    internal::StringFromGTestEnv("death_test_style", kDefaultDeathTestStyle),
+    "Indicates how to run a death test in a forked child process: "
+    "\"threadsafe\" (child process re-executes the test binary "
+    "from the beginning, running only the specific death test) or "
+    "\"fast\" (child process runs the death test immediately "
+    "after forking).");
+
+GTEST_DEFINE_bool_(
+    death_test_use_fork,
+    internal::BoolFromGTestEnv("death_test_use_fork", false),
+    "Instructs to use fork()/_exit() instead of clone() in death tests. "
+    "Ignored and always uses fork() on POSIX systems where clone() is not "
+    "implemented. Useful when running under valgrind or similar tools if "
+    "those do not support clone(). Valgrind 3.3.1 will just fail if "
+    "it sees an unsupported combination of clone() flags. "
+    "It is not recommended to use this flag w/o valgrind though it will "
+    "work in 99% of the cases. Once valgrind is fixed, this flag will "
+    "most likely be removed.");
+
+namespace internal {
+GTEST_DEFINE_string_(
+    internal_run_death_test, "",
+    "Indicates the file, line number, temporal index of "
+    "the single death test to run, and a file descriptor to "
+    "which a success code may be sent, all separated by "
+    "the '|' characters.  This flag is specified if and only if the "
+    "current process is a sub-process launched for running a thread-safe "
+    "death test.  FOR INTERNAL USE ONLY.");
+}  // namespace internal
+
+#if GTEST_HAS_DEATH_TEST
+
+namespace internal {
+
+// Valid only for fast death tests. Indicates the code is running in the
+// child process of a fast style death test.
+# if !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
+static bool g_in_fast_death_test_child = false;
+# endif
+
+// Returns a Boolean value indicating whether the caller is currently
+// executing in the context of the death test child process.  Tools such as
+// Valgrind heap checkers may need this to modify their behavior in death
+// tests.  IMPORTANT: This is an internal utility.  Using it may break the
+// implementation of death tests.  User code MUST NOT use it.
+bool InDeathTestChild() {
+# if GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
+
+  // On Windows and Fuchsia, death tests are thread-safe regardless of the value
+  // of the death_test_style flag.
+  return !GTEST_FLAG(internal_run_death_test).empty();
+
+# else
+
+  if (GTEST_FLAG(death_test_style) == "threadsafe")
+    return !GTEST_FLAG(internal_run_death_test).empty();
+  else
+    return g_in_fast_death_test_child;
+#endif
+}
+
+}  // namespace internal
+
+// ExitedWithCode constructor.
+ExitedWithCode::ExitedWithCode(int exit_code) : exit_code_(exit_code) {
+}
+
+// ExitedWithCode function-call operator.
+bool ExitedWithCode::operator()(int exit_status) const {
+# if GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
+
+  return exit_status == exit_code_;
+
+# else
+
+  return WIFEXITED(exit_status) && WEXITSTATUS(exit_status) == exit_code_;
+
+# endif  // GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
+}
+
+# if !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
+// KilledBySignal constructor.
+KilledBySignal::KilledBySignal(int signum) : signum_(signum) {
+}
+
+// KilledBySignal function-call operator.
+bool KilledBySignal::operator()(int exit_status) const {
+#  if defined(GTEST_KILLED_BY_SIGNAL_OVERRIDE_)
+  {
+    bool result;
+    if (GTEST_KILLED_BY_SIGNAL_OVERRIDE_(signum_, exit_status, &result)) {
+      return result;
+    }
+  }
+#  endif  // defined(GTEST_KILLED_BY_SIGNAL_OVERRIDE_)
+  return WIFSIGNALED(exit_status) && WTERMSIG(exit_status) == signum_;
+}
+# endif  // !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
+
+namespace internal {
+
+// Utilities needed for death tests.
+
+// Generates a textual description of a given exit code, in the format
+// specified by wait(2).
+static std::string ExitSummary(int exit_code) {
+  Message m;
+
+# if GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
+
+  m << "Exited with exit status " << exit_code;
+
+# else
+
+  if (WIFEXITED(exit_code)) {
+    m << "Exited with exit status " << WEXITSTATUS(exit_code);
+  } else if (WIFSIGNALED(exit_code)) {
+    m << "Terminated by signal " << WTERMSIG(exit_code);
+  }
+#  ifdef WCOREDUMP
+  if (WCOREDUMP(exit_code)) {
+    m << " (core dumped)";
+  }
+#  endif
+# endif  // GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
+
+  return m.GetString();
+}
+
+// Returns true if exit_status describes a process that was terminated
+// by a signal, or exited normally with a nonzero exit code.
+bool ExitedUnsuccessfully(int exit_status) {
+  return !ExitedWithCode(0)(exit_status);
+}
+
+# if !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
+// Generates a textual failure message when a death test finds more than
+// one thread running, or cannot determine the number of threads, prior
+// to executing the given statement.  It is the responsibility of the
+// caller not to pass a thread_count of 1.
+static std::string DeathTestThreadWarning(size_t thread_count) {
+  Message msg;
+  msg << "Death tests use fork(), which is unsafe particularly"
+      << " in a threaded context. For this test, " << GTEST_NAME_ << " ";
+  if (thread_count == 0) {
+    msg << "couldn't detect the number of threads.";
+  } else {
+    msg << "detected " << thread_count << " threads.";
+  }
+  msg << " See "
+         "https://github.com/google/googletest/blob/master/googletest/docs/"
+         "advanced.md#death-tests-and-threads"
+      << " for more explanation and suggested solutions, especially if"
+      << " this is the last message you see before your test times out.";
+  return msg.GetString();
+}
+# endif  // !GTEST_OS_WINDOWS && !GTEST_OS_FUCHSIA
+
+// Flag characters for reporting a death test that did not die.
+static const char kDeathTestLived = 'L';
+static const char kDeathTestReturned = 'R';
+static const char kDeathTestThrew = 'T';
+static const char kDeathTestInternalError = 'I';
+
+#if GTEST_OS_FUCHSIA
+
+// File descriptor used for the pipe in the child process.
+static const int kFuchsiaReadPipeFd = 3;
+
+#endif
+
+// An enumeration describing all of the possible ways that a death test can
+// conclude.  DIED means that the process died while executing the test
+// code; LIVED means that process lived beyond the end of the test code;
+// RETURNED means that the test statement attempted to execute a return
+// statement, which is not allowed; THREW means that the test statement
+// returned control by throwing an exception.  IN_PROGRESS means the test
+// has not yet concluded.
+enum DeathTestOutcome { IN_PROGRESS, DIED, LIVED, RETURNED, THREW };
+
+// Routine for aborting the program which is safe to call from an
+// exec-style death test child process, in which case the error
+// message is propagated back to the parent process.  Otherwise, the
+// message is simply printed to stderr.  In either case, the program
+// then exits with status 1.
+static void DeathTestAbort(const std::string& message) {
+  // On a POSIX system, this function may be called from a threadsafe-style
+  // death test child process, which operates on a very small stack.  Use
+  // the heap for any additional non-minuscule memory requirements.
+  const InternalRunDeathTestFlag* const flag =
+      GetUnitTestImpl()->internal_run_death_test_flag();
+  if (flag != nullptr) {
+    FILE* parent = posix::FDOpen(flag->write_fd(), "w");
+    fputc(kDeathTestInternalError, parent);
+    fprintf(parent, "%s", message.c_str());
+    fflush(parent);
+    _exit(1);
+  } else {
+    fprintf(stderr, "%s", message.c_str());
+    fflush(stderr);
+    posix::Abort();
+  }
+}
+
+// A replacement for CHECK that calls DeathTestAbort if the assertion
+// fails.
+# define GTEST_DEATH_TEST_CHECK_(expression) \
+  do { \
+    if (!::testing::internal::IsTrue(expression)) { \
+      DeathTestAbort( \
+          ::std::string("CHECK failed: File ") + __FILE__ +  ", line " \
+          + ::testing::internal::StreamableToString(__LINE__) + ": " \
+          + #expression); \
+    } \
+  } while (::testing::internal::AlwaysFalse())
+
+// This macro is similar to GTEST_DEATH_TEST_CHECK_, but it is meant for
+// evaluating any system call that fulfills two conditions: it must return
+// -1 on failure, and set errno to EINTR when it is interrupted and
+// should be tried again.  The macro expands to a loop that repeatedly
+// evaluates the expression as long as it evaluates to -1 and sets
+// errno to EINTR.  If the expression evaluates to -1 but errno is
+// something other than EINTR, DeathTestAbort is called.
+# define GTEST_DEATH_TEST_CHECK_SYSCALL_(expression) \
+  do { \
+    int gtest_retval; \
+    do { \
+      gtest_retval = (expression); \
+    } while (gtest_retval == -1 && errno == EINTR); \
+    if (gtest_retval == -1) { \
+      DeathTestAbort( \
+          ::std::string("CHECK failed: File ") + __FILE__ + ", line " \
+          + ::testing::internal::StreamableToString(__LINE__) + ": " \
+          + #expression + " != -1"); \
+    } \
+  } while (::testing::internal::AlwaysFalse())
+
+// Returns the message describing the last system error in errno.
+std::string GetLastErrnoDescription() {
+    return errno == 0 ? "" : posix::StrError(errno);
+}
+
+// This is called from a death test parent process to read a failure
+// message from the death test child process and log it with the FATAL
+// severity. On Windows, the message is read from a pipe handle. On other
+// platforms, it is read from a file descriptor.
+static void FailFromInternalError(int fd) {
+  Message error;
+  char buffer[256];
+  int num_read;
+
+  do {
+    while ((num_read = posix::Read(fd, buffer, 255)) > 0) {
+      buffer[num_read] = '\0';
+      error << buffer;
+    }
+  } while (num_read == -1 && errno == EINTR);
+
+  if (num_read == 0) {
+    GTEST_LOG_(FATAL) << error.GetString();
+  } else {
+    const int last_error = errno;
+    GTEST_LOG_(FATAL) << "Error while reading death test internal: "
+                      << GetLastErrnoDescription() << " [" << last_error << "]";
+  }
+}
+
+// Death test constructor.  Increments the running death test count
+// for the current test.
+DeathTest::DeathTest() {
+  TestInfo* const info = GetUnitTestImpl()->current_test_info();
+  if (info == nullptr) {
+    DeathTestAbort("Cannot run a death test outside of a TEST or "
+                   "TEST_F construct");
+  }
+}
+
+// Creates and returns a death test by dispatching to the current
+// death test factory.
+bool DeathTest::Create(const char* statement,
+                       Matcher<const std::string&> matcher, const char* file,
+                       int line, DeathTest** test) {
+  return GetUnitTestImpl()->death_test_factory()->Create(
+      statement, std::move(matcher), file, line, test);
+}
+
+const char* DeathTest::LastMessage() {
+  return last_death_test_message_.c_str();
+}
+
+void DeathTest::set_last_death_test_message(const std::string& message) {
+  last_death_test_message_ = message;
+}
+
+std::string DeathTest::last_death_test_message_;
+
+// Provides cross platform implementation for some death functionality.
+class DeathTestImpl : public DeathTest {
+ protected:
+  DeathTestImpl(const char* a_statement, Matcher<const std::string&> matcher)
+      : statement_(a_statement),
+        matcher_(std::move(matcher)),
+        spawned_(false),
+        status_(-1),
+        outcome_(IN_PROGRESS),
+        read_fd_(-1),
+        write_fd_(-1) {}
+
+  // read_fd_ is expected to be closed and cleared by a derived class.
+  ~DeathTestImpl() override { GTEST_DEATH_TEST_CHECK_(read_fd_ == -1); }
+
+  void Abort(AbortReason reason) override;
+  bool Passed(bool status_ok) override;
+
+  const char* statement() const { return statement_; }
+  bool spawned() const { return spawned_; }
+  void set_spawned(bool is_spawned) { spawned_ = is_spawned; }
+  int status() const { return status_; }
+  void set_status(int a_status) { status_ = a_status; }
+  DeathTestOutcome outcome() const { return outcome_; }
+  void set_outcome(DeathTestOutcome an_outcome) { outcome_ = an_outcome; }
+  int read_fd() const { return read_fd_; }
+  void set_read_fd(int fd) { read_fd_ = fd; }
+  int write_fd() const { return write_fd_; }
+  void set_write_fd(int fd) { write_fd_ = fd; }
+
+  // Called in the parent process only. Reads the result code of the death
+  // test child process via a pipe, interprets it to set the outcome_
+  // member, and closes read_fd_.  Outputs diagnostics and terminates in
+  // case of unexpected codes.
+  void ReadAndInterpretStatusByte();
+
+  // Returns stderr output from the child process.
+  virtual std::string GetErrorLogs();
+
+ private:
+  // The textual content of the code this object is testing.  This class
+  // doesn't own this string and should not attempt to delete it.
+  const char* const statement_;
+  // A matcher that's expected to match the stderr output by the child process.
+  Matcher<const std::string&> matcher_;
+  // True if the death test child process has been successfully spawned.
+  bool spawned_;
+  // The exit status of the child process.
+  int status_;
+  // How the death test concluded.
+  DeathTestOutcome outcome_;
+  // Descriptor to the read end of the pipe to the child process.  It is
+  // always -1 in the child process.  The child keeps its write end of the
+  // pipe in write_fd_.
+  int read_fd_;
+  // Descriptor to the child's write end of the pipe to the parent process.
+  // It is always -1 in the parent process.  The parent keeps its end of the
+  // pipe in read_fd_.
+  int write_fd_;
+};
+
+// Called in the parent process only. Reads the result code of the death
+// test child process via a pipe, interprets it to set the outcome_
+// member, and closes read_fd_.  Outputs diagnostics and terminates in
+// case of unexpected codes.
+void DeathTestImpl::ReadAndInterpretStatusByte() {
+  char flag;
+  int bytes_read;
+
+  // The read() here blocks until data is available (signifying the
+  // failure of the death test) or until the pipe is closed (signifying
+  // its success), so it's okay to call this in the parent before
+  // the child process has exited.
+  do {
+    bytes_read = posix::Read(read_fd(), &flag, 1);
+  } while (bytes_read == -1 && errno == EINTR);
+
+  if (bytes_read == 0) {
+    set_outcome(DIED);
+  } else if (bytes_read == 1) {
+    switch (flag) {
+      case kDeathTestReturned:
+        set_outcome(RETURNED);
+        break;
+      case kDeathTestThrew:
+        set_outcome(THREW);
+        break;
+      case kDeathTestLived:
+        set_outcome(LIVED);
+        break;
+      case kDeathTestInternalError:
+        FailFromInternalError(read_fd());  // Does not return.
+        break;
+      default:
+        GTEST_LOG_(FATAL) << "Death test child process reported "
+                          << "unexpected status byte ("
+                          << static_cast<unsigned int>(flag) << ")";
+    }
+  } else {
+    GTEST_LOG_(FATAL) << "Read from death test child process failed: "
+                      << GetLastErrnoDescription();
+  }
+  GTEST_DEATH_TEST_CHECK_SYSCALL_(posix::Close(read_fd()));
+  set_read_fd(-1);
+}
+
+std::string DeathTestImpl::GetErrorLogs() {
+  return GetCapturedStderr();
+}
+
+// Signals that the death test code which should have exited, didn't.
+// Should be called only in a death test child process.
+// Writes a status byte to the child's status file descriptor, then
+// calls _exit(1).
+void DeathTestImpl::Abort(AbortReason reason) {
+  // The parent process considers the death test to be a failure if
+  // it finds any data in our pipe.  So, here we write a single flag byte
+  // to the pipe, then exit.
+  const char status_ch =
+      reason == TEST_DID_NOT_DIE ? kDeathTestLived :
+      reason == TEST_THREW_EXCEPTION ? kDeathTestThrew : kDeathTestReturned;
+
+  GTEST_DEATH_TEST_CHECK_SYSCALL_(posix::Write(write_fd(), &status_ch, 1));
+  // We are leaking the descriptor here because on some platforms (i.e.,
+  // when built as Windows DLL), destructors of global objects will still
+  // run after calling _exit(). On such systems, write_fd_ will be
+  // indirectly closed from the destructor of UnitTestImpl, causing double
+  // close if it is also closed here. On debug configurations, double close
+  // may assert. As there are no in-process buffers to flush here, we are
+  // relying on the OS to close the descriptor after the process terminates
+  // when the destructors are not run.
+  _exit(1);  // Exits w/o any normal exit hooks (we were supposed to crash)
+}
+
+// Returns an indented copy of stderr output for a death test.
+// This makes distinguishing death test output lines from regular log lines
+// much easier.
+static ::std::string FormatDeathTestOutput(const ::std::string& output) {
+  ::std::string ret;
+  for (size_t at = 0; ; ) {
+    const size_t line_end = output.find('\n', at);
+    ret += "[  DEATH   ] ";
+    if (line_end == ::std::string::npos) {
+      ret += output.substr(at);
+      break;
+    }
+    ret += output.substr(at, line_end + 1 - at);
+    at = line_end + 1;
+  }
+  return ret;
+}
+
+// Assesses the success or failure of a death test, using both private
+// members which have previously been set, and one argument:
+//
+// Private data members:
+//   outcome:  An enumeration describing how the death test
+//             concluded: DIED, LIVED, THREW, or RETURNED.  The death test
+//             fails in the latter three cases.
+//   status:   The exit status of the child process. On *nix, it is in the
+//             in the format specified by wait(2). On Windows, this is the
+//             value supplied to the ExitProcess() API or a numeric code
+//             of the exception that terminated the program.
+//   matcher_: A matcher that's expected to match the stderr output by the child
+//             process.
+//
+// Argument:
+//   status_ok: true if exit_status is acceptable in the context of
+//              this particular death test, which fails if it is false
+//
+// Returns true if and only if all of the above conditions are met.  Otherwise,
+// the first failing condition, in the order given above, is the one that is
+// reported. Also sets the last death test message string.
+bool DeathTestImpl::Passed(bool status_ok) {
+  if (!spawned())
+    return false;
+
+  const std::string error_message = GetErrorLogs();
+
+  bool success = false;
+  Message buffer;
+
+  buffer << "Death test: " << statement() << "\n";
+  switch (outcome()) {
+    case LIVED:
+      buffer << "    Result: failed to die.\n"
+             << " Error msg:\n" << FormatDeathTestOutput(error_message);
+      break;
+    case THREW:
+      buffer << "    Result: threw an exception.\n"
+             << " Error msg:\n" << FormatDeathTestOutput(error_message);
+      break;
+    case RETURNED:
+      buffer << "    Result: illegal return in test statement.\n"
+             << " Error msg:\n" << FormatDeathTestOutput(error_message);
+      break;
+    case DIED:
+      if (status_ok) {
+        if (matcher_.Matches(error_message)) {
+          success = true;
+        } else {
+          std::ostringstream stream;
+          matcher_.DescribeTo(&stream);
+          buffer << "    Result: died but not with expected error.\n"
+                 << "  Expected: " << stream.str() << "\n"
+                 << "Actual msg:\n"
+                 << FormatDeathTestOutput(error_message);
+        }
+      } else {
+        buffer << "    Result: died but not with expected exit code:\n"
+               << "            " << ExitSummary(status()) << "\n"
+               << "Actual msg:\n" << FormatDeathTestOutput(error_message);
+      }
+      break;
+    case IN_PROGRESS:
+    default:
+      GTEST_LOG_(FATAL)
+          << "DeathTest::Passed somehow called before conclusion of test";
+  }
+
+  DeathTest::set_last_death_test_message(buffer.GetString());
+  return success;
+}
+
+# if GTEST_OS_WINDOWS
+// WindowsDeathTest implements death tests on Windows. Due to the
+// specifics of starting new processes on Windows, death tests there are
+// always threadsafe, and Google Test considers the
+// --gtest_death_test_style=fast setting to be equivalent to
+// --gtest_death_test_style=threadsafe there.
+//
+// A few implementation notes:  Like the Linux version, the Windows
+// implementation uses pipes for child-to-parent communication. But due to
+// the specifics of pipes on Windows, some extra steps are required:
+//
+// 1. The parent creates a communication pipe and stores handles to both
+//    ends of it.
+// 2. The parent starts the child and provides it with the information
+//    necessary to acquire the handle to the write end of the pipe.
+// 3. The child acquires the write end of the pipe and signals the parent
+//    using a Windows event.
+// 4. Now the parent can release the write end of the pipe on its side. If
+//    this is done before step 3, the object's reference count goes down to
+//    0 and it is destroyed, preventing the child from acquiring it. The
+//    parent now has to release it, or read operations on the read end of
+//    the pipe will not return when the child terminates.
+// 5. The parent reads child's output through the pipe (outcome code and
+//    any possible error messages) from the pipe, and its stderr and then
+//    determines whether to fail the test.
+//
+// Note: to distinguish Win32 API calls from the local method and function
+// calls, the former are explicitly resolved in the global namespace.
+//
+class WindowsDeathTest : public DeathTestImpl {
+ public:
+  WindowsDeathTest(const char* a_statement, Matcher<const std::string&> matcher,
+                   const char* file, int line)
+      : DeathTestImpl(a_statement, std::move(matcher)),
+        file_(file),
+        line_(line) {}
+
+  // All of these virtual functions are inherited from DeathTest.
+  virtual int Wait();
+  virtual TestRole AssumeRole();
+
+ private:
+  // The name of the file in which the death test is located.
+  const char* const file_;
+  // The line number on which the death test is located.
+  const int line_;
+  // Handle to the write end of the pipe to the child process.
+  AutoHandle write_handle_;
+  // Child process handle.
+  AutoHandle child_handle_;
+  // Event the child process uses to signal the parent that it has
+  // acquired the handle to the write end of the pipe. After seeing this
+  // event the parent can release its own handles to make sure its
+  // ReadFile() calls return when the child terminates.
+  AutoHandle event_handle_;
+};
+
+// Waits for the child in a death test to exit, returning its exit
+// status, or 0 if no child process exists.  As a side effect, sets the
+// outcome data member.
+int WindowsDeathTest::Wait() {
+  if (!spawned())
+    return 0;
+
+  // Wait until the child either signals that it has acquired the write end
+  // of the pipe or it dies.
+  const HANDLE wait_handles[2] = { child_handle_.Get(), event_handle_.Get() };
+  switch (::WaitForMultipleObjects(2,
+                                   wait_handles,
+                                   FALSE,  // Waits for any of the handles.
+                                   INFINITE)) {
+    case WAIT_OBJECT_0:
+    case WAIT_OBJECT_0 + 1:
+      break;
+    default:
+      GTEST_DEATH_TEST_CHECK_(false);  // Should not get here.
+  }
+
+  // The child has acquired the write end of the pipe or exited.
+  // We release the handle on our side and continue.
+  write_handle_.Reset();
+  event_handle_.Reset();
+
+  ReadAndInterpretStatusByte();
+
+  // Waits for the child process to exit if it haven't already. This
+  // returns immediately if the child has already exited, regardless of
+  // whether previous calls to WaitForMultipleObjects synchronized on this
+  // handle or not.
+  GTEST_DEATH_TEST_CHECK_(
+      WAIT_OBJECT_0 == ::WaitForSingleObject(child_handle_.Get(),
+                                             INFINITE));
+  DWORD status_code;
+  GTEST_DEATH_TEST_CHECK_(
+      ::GetExitCodeProcess(child_handle_.Get(), &status_code) != FALSE);
+  child_handle_.Reset();
+  set_status(static_cast<int>(status_code));
+  return status();
+}
+
+// The AssumeRole process for a Windows death test.  It creates a child
+// process with the same executable as the current process to run the
+// death test.  The child process is given the --gtest_filter and
+// --gtest_internal_run_death_test flags such that it knows to run the
+// current death test only.
+DeathTest::TestRole WindowsDeathTest::AssumeRole() {
+  const UnitTestImpl* const impl = GetUnitTestImpl();
+  const InternalRunDeathTestFlag* const flag =
+      impl->internal_run_death_test_flag();
+  const TestInfo* const info = impl->current_test_info();
+  const int death_test_index = info->result()->death_test_count();
+
+  if (flag != nullptr) {
+    // ParseInternalRunDeathTestFlag() has performed all the necessary
+    // processing.
+    set_write_fd(flag->write_fd());
+    return EXECUTE_TEST;
+  }
+
+  // WindowsDeathTest uses an anonymous pipe to communicate results of
+  // a death test.
+  SECURITY_ATTRIBUTES handles_are_inheritable = {sizeof(SECURITY_ATTRIBUTES),
+                                                 nullptr, TRUE};
+  HANDLE read_handle, write_handle;
+  GTEST_DEATH_TEST_CHECK_(
+      ::CreatePipe(&read_handle, &write_handle, &handles_are_inheritable,
+                   0)  // Default buffer size.
+      != FALSE);
+  set_read_fd(::_open_osfhandle(reinterpret_cast<intptr_t>(read_handle),
+                                O_RDONLY));
+  write_handle_.Reset(write_handle);
+  event_handle_.Reset(::CreateEvent(
+      &handles_are_inheritable,
+      TRUE,       // The event will automatically reset to non-signaled state.
+      FALSE,      // The initial state is non-signalled.
+      nullptr));  // The even is unnamed.
+  GTEST_DEATH_TEST_CHECK_(event_handle_.Get() != nullptr);
+  const std::string filter_flag = std::string("--") + GTEST_FLAG_PREFIX_ +
+                                  kFilterFlag + "=" + info->test_suite_name() +
+                                  "." + info->name();
+  const std::string internal_flag =
+      std::string("--") + GTEST_FLAG_PREFIX_ + kInternalRunDeathTestFlag +
+      "=" + file_ + "|" + StreamableToString(line_) + "|" +
+      StreamableToString(death_test_index) + "|" +
+      StreamableToString(static_cast<unsigned int>(::GetCurrentProcessId())) +
+      // size_t has the same width as pointers on both 32-bit and 64-bit
+      // Windows platforms.
+      // See http://msdn.microsoft.com/en-us/library/tcxf1dw6.aspx.
+      "|" + StreamableToString(reinterpret_cast<size_t>(write_handle)) +
+      "|" + StreamableToString(reinterpret_cast<size_t>(event_handle_.Get()));
+
+  char executable_path[_MAX_PATH + 1];  // NOLINT
+  GTEST_DEATH_TEST_CHECK_(_MAX_PATH + 1 != ::GetModuleFileNameA(nullptr,
+                                                                executable_path,
+                                                                _MAX_PATH));
+
+  std::string command_line =
+      std::string(::GetCommandLineA()) + " " + filter_flag + " \"" +
+      internal_flag + "\"";
+
+  DeathTest::set_last_death_test_message("");
+
+  CaptureStderr();
+  // Flush the log buffers since the log streams are shared with the child.
+  FlushInfoLog();
+
+  // The child process will share the standard handles with the parent.
+  STARTUPINFOA startup_info;
+  memset(&startup_info, 0, sizeof(STARTUPINFO));
+  startup_info.dwFlags = STARTF_USESTDHANDLES;
+  startup_info.hStdInput = ::GetStdHandle(STD_INPUT_HANDLE);
+  startup_info.hStdOutput = ::GetStdHandle(STD_OUTPUT_HANDLE);
+  startup_info.hStdError = ::GetStdHandle(STD_ERROR_HANDLE);
+
+  PROCESS_INFORMATION process_info;
+  GTEST_DEATH_TEST_CHECK_(
+      ::CreateProcessA(
+          executable_path, const_cast<char*>(command_line.c_str()),
+          nullptr,  // Retuned process handle is not inheritable.
+          nullptr,  // Retuned thread handle is not inheritable.
+          TRUE,  // Child inherits all inheritable handles (for write_handle_).
+          0x0,   // Default creation flags.
+          nullptr,  // Inherit the parent's environment.
+          UnitTest::GetInstance()->original_working_dir(), &startup_info,
+          &process_info) != FALSE);
+  child_handle_.Reset(process_info.hProcess);
+  ::CloseHandle(process_info.hThread);
+  set_spawned(true);
+  return OVERSEE_TEST;
+}
+
+# elif GTEST_OS_FUCHSIA
+
+class FuchsiaDeathTest : public DeathTestImpl {
+ public:
+  FuchsiaDeathTest(const char* a_statement, Matcher<const std::string&> matcher,
+                   const char* file, int line)
+      : DeathTestImpl(a_statement, std::move(matcher)),
+        file_(file),
+        line_(line) {}
+
+  // All of these virtual functions are inherited from DeathTest.
+  int Wait() override;
+  TestRole AssumeRole() override;
+  std::string GetErrorLogs() override;
+
+ private:
+  // The name of the file in which the death test is located.
+  const char* const file_;
+  // The line number on which the death test is located.
+  const int line_;
+  // The stderr data captured by the child process.
+  std::string captured_stderr_;
+
+  zx::process child_process_;
+  zx::channel exception_channel_;
+  zx::socket stderr_socket_;
+};
+
+// Utility class for accumulating command-line arguments.
+class Arguments {
+ public:
+  Arguments() { args_.push_back(nullptr); }
+
+  ~Arguments() {
+    for (std::vector<char*>::iterator i = args_.begin(); i != args_.end();
+         ++i) {
+      free(*i);
+    }
+  }
+  void AddArgument(const char* argument) {
+    args_.insert(args_.end() - 1, posix::StrDup(argument));
+  }
+
+  template <typename Str>
+  void AddArguments(const ::std::vector<Str>& arguments) {
+    for (typename ::std::vector<Str>::const_iterator i = arguments.begin();
+         i != arguments.end();
+         ++i) {
+      args_.insert(args_.end() - 1, posix::StrDup(i->c_str()));
+    }
+  }
+  char* const* Argv() {
+    return &args_[0];
+  }
+
+  int size() {
+    return args_.size() - 1;
+  }
+
+ private:
+  std::vector<char*> args_;
+};
+
+// Waits for the child in a death test to exit, returning its exit
+// status, or 0 if no child process exists.  As a side effect, sets the
+// outcome data member.
+int FuchsiaDeathTest::Wait() {
+  const int kProcessKey = 0;
+  const int kSocketKey = 1;
+  const int kExceptionKey = 2;
+
+  if (!spawned())
+    return 0;
+
+  // Create a port to wait for socket/task/exception events.
+  zx_status_t status_zx;
+  zx::port port;
+  status_zx = zx::port::create(0, &port);
+  GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+  // Register to wait for the child process to terminate.
+  status_zx = child_process_.wait_async(
+      port, kProcessKey, ZX_PROCESS_TERMINATED, ZX_WAIT_ASYNC_ONCE);
+  GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+  // Register to wait for the socket to be readable or closed.
+  status_zx = stderr_socket_.wait_async(
+      port, kSocketKey, ZX_SOCKET_READABLE | ZX_SOCKET_PEER_CLOSED,
+      ZX_WAIT_ASYNC_ONCE);
+  GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+  // Register to wait for an exception.
+  status_zx = exception_channel_.wait_async(
+      port, kExceptionKey, ZX_CHANNEL_READABLE, ZX_WAIT_ASYNC_ONCE);
+  GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+  bool process_terminated = false;
+  bool socket_closed = false;
+  do {
+    zx_port_packet_t packet = {};
+    status_zx = port.wait(zx::time::infinite(), &packet);
+    GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+    if (packet.key == kExceptionKey) {
+      // Process encountered an exception. Kill it directly rather than
+      // letting other handlers process the event. We will get a kProcessKey
+      // event when the process actually terminates.
+      status_zx = child_process_.kill();
+      GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+    } else if (packet.key == kProcessKey) {
+      // Process terminated.
+      GTEST_DEATH_TEST_CHECK_(ZX_PKT_IS_SIGNAL_ONE(packet.type));
+      GTEST_DEATH_TEST_CHECK_(packet.signal.observed & ZX_PROCESS_TERMINATED);
+      process_terminated = true;
+    } else if (packet.key == kSocketKey) {
+      GTEST_DEATH_TEST_CHECK_(ZX_PKT_IS_SIGNAL_ONE(packet.type));
+      if (packet.signal.observed & ZX_SOCKET_READABLE) {
+        // Read data from the socket.
+        constexpr size_t kBufferSize = 1024;
+        do {
+          size_t old_length = captured_stderr_.length();
+          size_t bytes_read = 0;
+          captured_stderr_.resize(old_length + kBufferSize);
+          status_zx = stderr_socket_.read(
+              0, &captured_stderr_.front() + old_length, kBufferSize,
+              &bytes_read);
+          captured_stderr_.resize(old_length + bytes_read);
+        } while (status_zx == ZX_OK);
+        if (status_zx == ZX_ERR_PEER_CLOSED) {
+          socket_closed = true;
+        } else {
+          GTEST_DEATH_TEST_CHECK_(status_zx == ZX_ERR_SHOULD_WAIT);
+          status_zx = stderr_socket_.wait_async(
+              port, kSocketKey, ZX_SOCKET_READABLE | ZX_SOCKET_PEER_CLOSED,
+              ZX_WAIT_ASYNC_ONCE);
+          GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+        }
+      } else {
+        GTEST_DEATH_TEST_CHECK_(packet.signal.observed & ZX_SOCKET_PEER_CLOSED);
+        socket_closed = true;
+      }
+    }
+  } while (!process_terminated && !socket_closed);
+
+  ReadAndInterpretStatusByte();
+
+  zx_info_process_t buffer;
+  status_zx = child_process_.get_info(
+      ZX_INFO_PROCESS, &buffer, sizeof(buffer), nullptr, nullptr);
+  GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+  GTEST_DEATH_TEST_CHECK_(buffer.exited);
+  set_status(buffer.return_code);
+  return status();
+}
+
+// The AssumeRole process for a Fuchsia death test.  It creates a child
+// process with the same executable as the current process to run the
+// death test.  The child process is given the --gtest_filter and
+// --gtest_internal_run_death_test flags such that it knows to run the
+// current death test only.
+DeathTest::TestRole FuchsiaDeathTest::AssumeRole() {
+  const UnitTestImpl* const impl = GetUnitTestImpl();
+  const InternalRunDeathTestFlag* const flag =
+      impl->internal_run_death_test_flag();
+  const TestInfo* const info = impl->current_test_info();
+  const int death_test_index = info->result()->death_test_count();
+
+  if (flag != nullptr) {
+    // ParseInternalRunDeathTestFlag() has performed all the necessary
+    // processing.
+    set_write_fd(kFuchsiaReadPipeFd);
+    return EXECUTE_TEST;
+  }
+
+  // Flush the log buffers since the log streams are shared with the child.
+  FlushInfoLog();
+
+  // Build the child process command line.
+  const std::string filter_flag = std::string("--") + GTEST_FLAG_PREFIX_ +
+                                  kFilterFlag + "=" + info->test_suite_name() +
+                                  "." + info->name();
+  const std::string internal_flag =
+      std::string("--") + GTEST_FLAG_PREFIX_ + kInternalRunDeathTestFlag + "="
+      + file_ + "|"
+      + StreamableToString(line_) + "|"
+      + StreamableToString(death_test_index);
+  Arguments args;
+  args.AddArguments(GetInjectableArgvs());
+  args.AddArgument(filter_flag.c_str());
+  args.AddArgument(internal_flag.c_str());
+
+  // Build the pipe for communication with the child.
+  zx_status_t status;
+  zx_handle_t child_pipe_handle;
+  int child_pipe_fd;
+  status = fdio_pipe_half(&child_pipe_fd, &child_pipe_handle);
+  GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+  set_read_fd(child_pipe_fd);
+
+  // Set the pipe handle for the child.
+  fdio_spawn_action_t spawn_actions[2] = {};
+  fdio_spawn_action_t* add_handle_action = &spawn_actions[0];
+  add_handle_action->action = FDIO_SPAWN_ACTION_ADD_HANDLE;
+  add_handle_action->h.id = PA_HND(PA_FD, kFuchsiaReadPipeFd);
+  add_handle_action->h.handle = child_pipe_handle;
+
+  // Create a socket pair will be used to receive the child process' stderr.
+  zx::socket stderr_producer_socket;
+  status =
+      zx::socket::create(0, &stderr_producer_socket, &stderr_socket_);
+  GTEST_DEATH_TEST_CHECK_(status >= 0);
+  int stderr_producer_fd = -1;
+  status =
+      fdio_fd_create(stderr_producer_socket.release(), &stderr_producer_fd);
+  GTEST_DEATH_TEST_CHECK_(status >= 0);
+
+  // Make the stderr socket nonblocking.
+  GTEST_DEATH_TEST_CHECK_(fcntl(stderr_producer_fd, F_SETFL, 0) == 0);
+
+  fdio_spawn_action_t* add_stderr_action = &spawn_actions[1];
+  add_stderr_action->action = FDIO_SPAWN_ACTION_CLONE_FD;
+  add_stderr_action->fd.local_fd = stderr_producer_fd;
+  add_stderr_action->fd.target_fd = STDERR_FILENO;
+
+  // Create a child job.
+  zx_handle_t child_job = ZX_HANDLE_INVALID;
+  status = zx_job_create(zx_job_default(), 0, & child_job);
+  GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+  zx_policy_basic_t policy;
+  policy.condition = ZX_POL_NEW_ANY;
+  policy.policy = ZX_POL_ACTION_ALLOW;
+  status = zx_job_set_policy(
+      child_job, ZX_JOB_POL_RELATIVE, ZX_JOB_POL_BASIC, &policy, 1);
+  GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+
+  // Create an exception channel attached to the |child_job|, to allow
+  // us to suppress the system default exception handler from firing.
+  status =
+      zx_task_create_exception_channel(
+          child_job, 0, exception_channel_.reset_and_get_address());
+  GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+
+  // Spawn the child process.
+  status = fdio_spawn_etc(
+      child_job, FDIO_SPAWN_CLONE_ALL, args.Argv()[0], args.Argv(), nullptr,
+      2, spawn_actions, child_process_.reset_and_get_address(), nullptr);
+  GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+
+  set_spawned(true);
+  return OVERSEE_TEST;
+}
+
+std::string FuchsiaDeathTest::GetErrorLogs() {
+  return captured_stderr_;
+}
+
+#else  // We are neither on Windows, nor on Fuchsia.
+
+// ForkingDeathTest provides implementations for most of the abstract
+// methods of the DeathTest interface.  Only the AssumeRole method is
+// left undefined.
+class ForkingDeathTest : public DeathTestImpl {
+ public:
+  ForkingDeathTest(const char* statement, Matcher<const std::string&> matcher);
+
+  // All of these virtual functions are inherited from DeathTest.
+  int Wait() override;
+
+ protected:
+  void set_child_pid(pid_t child_pid) { child_pid_ = child_pid; }
+
+ private:
+  // PID of child process during death test; 0 in the child process itself.
+  pid_t child_pid_;
+};
+
+// Constructs a ForkingDeathTest.
+ForkingDeathTest::ForkingDeathTest(const char* a_statement,
+                                   Matcher<const std::string&> matcher)
+    : DeathTestImpl(a_statement, std::move(matcher)), child_pid_(-1) {}
+
+// Waits for the child in a death test to exit, returning its exit
+// status, or 0 if no child process exists.  As a side effect, sets the
+// outcome data member.
+int ForkingDeathTest::Wait() {
+  if (!spawned())
+    return 0;
+
+  ReadAndInterpretStatusByte();
+
+  int status_value;
+  GTEST_DEATH_TEST_CHECK_SYSCALL_(waitpid(child_pid_, &status_value, 0));
+  set_status(status_value);
+  return status_value;
+}
+
+// A concrete death test class that forks, then immediately runs the test
+// in the child process.
+class NoExecDeathTest : public ForkingDeathTest {
+ public:
+  NoExecDeathTest(const char* a_statement, Matcher<const std::string&> matcher)
+      : ForkingDeathTest(a_statement, std::move(matcher)) {}
+  TestRole AssumeRole() override;
+};
+
+// The AssumeRole process for a fork-and-run death test.  It implements a
+// straightforward fork, with a simple pipe to transmit the status byte.
+DeathTest::TestRole NoExecDeathTest::AssumeRole() {
+  const size_t thread_count = GetThreadCount();
+  if (thread_count != 1) {
+    GTEST_LOG_(WARNING) << DeathTestThreadWarning(thread_count);
+  }
+
+  int pipe_fd[2];
+  GTEST_DEATH_TEST_CHECK_(pipe(pipe_fd) != -1);
+
+  DeathTest::set_last_death_test_message("");
+  CaptureStderr();
+  // When we fork the process below, the log file buffers are copied, but the
+  // file descriptors are shared.  We flush all log files here so that closing
+  // the file descriptors in the child process doesn't throw off the
+  // synchronization between descriptors and buffers in the parent process.
+  // This is as close to the fork as possible to avoid a race condition in case
+  // there are multiple threads running before the death test, and another
+  // thread writes to the log file.
+  FlushInfoLog();
+
+  const pid_t child_pid = fork();
+  GTEST_DEATH_TEST_CHECK_(child_pid != -1);
+  set_child_pid(child_pid);
+  if (child_pid == 0) {
+    GTEST_DEATH_TEST_CHECK_SYSCALL_(close(pipe_fd[0]));
+    set_write_fd(pipe_fd[1]);
+    // Redirects all logging to stderr in the child process to prevent
+    // concurrent writes to the log files.  We capture stderr in the parent
+    // process and append the child process' output to a log.
+    LogToStderr();
+    // Event forwarding to the listeners of event listener API mush be shut
+    // down in death test subprocesses.
+    GetUnitTestImpl()->listeners()->SuppressEventForwarding();
+    g_in_fast_death_test_child = true;
+    return EXECUTE_TEST;
+  } else {
+    GTEST_DEATH_TEST_CHECK_SYSCALL_(close(pipe_fd[1]));
+    set_read_fd(pipe_fd[0]);
+    set_spawned(true);
+    return OVERSEE_TEST;
+  }
+}
+
+// A concrete death test class that forks and re-executes the main
+// program from the beginning, with command-line flags set that cause
+// only this specific death test to be run.
+class ExecDeathTest : public ForkingDeathTest {
+ public:
+  ExecDeathTest(const char* a_statement, Matcher<const std::string&> matcher,
+                const char* file, int line)
+      : ForkingDeathTest(a_statement, std::move(matcher)),
+        file_(file),
+        line_(line) {}
+  TestRole AssumeRole() override;
+
+ private:
+  static ::std::vector<std::string> GetArgvsForDeathTestChildProcess() {
+    ::std::vector<std::string> args = GetInjectableArgvs();
+#  if defined(GTEST_EXTRA_DEATH_TEST_COMMAND_LINE_ARGS_)
+    ::std::vector<std::string> extra_args =
+        GTEST_EXTRA_DEATH_TEST_COMMAND_LINE_ARGS_();
+    args.insert(args.end(), extra_args.begin(), extra_args.end());
+#  endif  // defined(GTEST_EXTRA_DEATH_TEST_COMMAND_LINE_ARGS_)
+    return args;
+  }
+  // The name of the file in which the death test is located.
+  const char* const file_;
+  // The line number on which the death test is located.
+  const int line_;
+};
+
+// Utility class for accumulating command-line arguments.
+class Arguments {
+ public:
+  Arguments() { args_.push_back(nullptr); }
+
+  ~Arguments() {
+    for (std::vector<char*>::iterator i = args_.begin(); i != args_.end();
+         ++i) {
+      free(*i);
+    }
+  }
+  void AddArgument(const char* argument) {
+    args_.insert(args_.end() - 1, posix::StrDup(argument));
+  }
+
+  template <typename Str>
+  void AddArguments(const ::std::vector<Str>& arguments) {
+    for (typename ::std::vector<Str>::const_iterator i = arguments.begin();
+         i != arguments.end();
+         ++i) {
+      args_.insert(args_.end() - 1, posix::StrDup(i->c_str()));
+    }
+  }
+  char* const* Argv() {
+    return &args_[0];
+  }
+
+ private:
+  std::vector<char*> args_;
+};
+
+// A struct that encompasses the arguments to the child process of a
+// threadsafe-style death test process.
+struct ExecDeathTestArgs {
+  char* const* argv;  // Command-line arguments for the child's call to exec
+  int close_fd;       // File descriptor to close; the read end of a pipe
+};
+
+#  if GTEST_OS_MAC
+inline char** GetEnviron() {
+  // When Google Test is built as a framework on MacOS X, the environ variable
+  // is unavailable. Apple's documentation (man environ) recommends using
+  // _NSGetEnviron() instead.
+  return *_NSGetEnviron();
+}
+#  else
+// Some POSIX platforms expect you to declare environ. extern "C" makes
+// it reside in the global namespace.
+extern "C" char** environ;
+inline char** GetEnviron() { return environ; }
+#  endif  // GTEST_OS_MAC
+
+#  if !GTEST_OS_QNX
+// The main function for a threadsafe-style death test child process.
+// This function is called in a clone()-ed process and thus must avoid
+// any potentially unsafe operations like malloc or libc functions.
+static int ExecDeathTestChildMain(void* child_arg) {
+  ExecDeathTestArgs* const args = static_cast<ExecDeathTestArgs*>(child_arg);
+  GTEST_DEATH_TEST_CHECK_SYSCALL_(close(args->close_fd));
+
+  // We need to execute the test program in the same environment where
+  // it was originally invoked.  Therefore we change to the original
+  // working directory first.
+  const char* const original_dir =
+      UnitTest::GetInstance()->original_working_dir();
+  // We can safely call chdir() as it's a direct system call.
+  if (chdir(original_dir) != 0) {
+    DeathTestAbort(std::string("chdir(\"") + original_dir + "\") failed: " +
+                   GetLastErrnoDescription());
+    return EXIT_FAILURE;
+  }
+
+  // We can safely call execve() as it's a direct system call.  We
+  // cannot use execvp() as it's a libc function and thus potentially
+  // unsafe.  Since execve() doesn't search the PATH, the user must
+  // invoke the test program via a valid path that contains at least
+  // one path separator.
+  execve(args->argv[0], args->argv, GetEnviron());
+  DeathTestAbort(std::string("execve(") + args->argv[0] + ", ...) in " +
+                 original_dir + " failed: " +
+                 GetLastErrnoDescription());
+  return EXIT_FAILURE;
+}
+#  endif  // !GTEST_OS_QNX
+
+#  if GTEST_HAS_CLONE
+// Two utility routines that together determine the direction the stack
+// grows.
+// This could be accomplished more elegantly by a single recursive
+// function, but we want to guard against the unlikely possibility of
+// a smart compiler optimizing the recursion away.
+//
+// GTEST_NO_INLINE_ is required to prevent GCC 4.6 from inlining
+// StackLowerThanAddress into StackGrowsDown, which then doesn't give
+// correct answer.
+static void StackLowerThanAddress(const void* ptr,
+                                  bool* result) GTEST_NO_INLINE_;
+// HWAddressSanitizer add a random tag to the MSB of the local variable address,
+// making comparison result unpredictable.
+GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
+static void StackLowerThanAddress(const void* ptr, bool* result) {
+  int dummy;
+  *result = (&dummy < ptr);
+}
+
+// Make sure AddressSanitizer does not tamper with the stack here.
+GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
+GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
+static bool StackGrowsDown() {
+  int dummy;
+  bool result;
+  StackLowerThanAddress(&dummy, &result);
+  return result;
+}
+#  endif  // GTEST_HAS_CLONE
+
+// Spawns a child process with the same executable as the current process in
+// a thread-safe manner and instructs it to run the death test.  The
+// implementation uses fork(2) + exec.  On systems where clone(2) is
+// available, it is used instead, being slightly more thread-safe.  On QNX,
+// fork supports only single-threaded environments, so this function uses
+// spawn(2) there instead.  The function dies with an error message if
+// anything goes wrong.
+static pid_t ExecDeathTestSpawnChild(char* const* argv, int close_fd) {
+  ExecDeathTestArgs args = { argv, close_fd };
+  pid_t child_pid = -1;
+
+#  if GTEST_OS_QNX
+  // Obtains the current directory and sets it to be closed in the child
+  // process.
+  const int cwd_fd = open(".", O_RDONLY);
+  GTEST_DEATH_TEST_CHECK_(cwd_fd != -1);
+  GTEST_DEATH_TEST_CHECK_SYSCALL_(fcntl(cwd_fd, F_SETFD, FD_CLOEXEC));
+  // We need to execute the test program in the same environment where
+  // it was originally invoked.  Therefore we change to the original
+  // working directory first.
+  const char* const original_dir =
+      UnitTest::GetInstance()->original_working_dir();
+  // We can safely call chdir() as it's a direct system call.
+  if (chdir(original_dir) != 0) {
+    DeathTestAbort(std::string("chdir(\"") + original_dir + "\") failed: " +
+                   GetLastErrnoDescription());
+    return EXIT_FAILURE;
+  }
+
+  int fd_flags;
+  // Set close_fd to be closed after spawn.
+  GTEST_DEATH_TEST_CHECK_SYSCALL_(fd_flags = fcntl(close_fd, F_GETFD));
+  GTEST_DEATH_TEST_CHECK_SYSCALL_(fcntl(close_fd, F_SETFD,
+                                        fd_flags | FD_CLOEXEC));
+  struct inheritance inherit = {0};
+  // spawn is a system call.
+  child_pid =
+      spawn(args.argv[0], 0, nullptr, &inherit, args.argv, GetEnviron());
+  // Restores the current working directory.
+  GTEST_DEATH_TEST_CHECK_(fchdir(cwd_fd) != -1);
+  GTEST_DEATH_TEST_CHECK_SYSCALL_(close(cwd_fd));
+
+#  else   // GTEST_OS_QNX
+#   if GTEST_OS_LINUX
+  // When a SIGPROF signal is received while fork() or clone() are executing,
+  // the process may hang. To avoid this, we ignore SIGPROF here and re-enable
+  // it after the call to fork()/clone() is complete.
+  struct sigaction saved_sigprof_action;
+  struct sigaction ignore_sigprof_action;
+  memset(&ignore_sigprof_action, 0, sizeof(ignore_sigprof_action));
+  sigemptyset(&ignore_sigprof_action.sa_mask);
+  ignore_sigprof_action.sa_handler = SIG_IGN;
+  GTEST_DEATH_TEST_CHECK_SYSCALL_(sigaction(
+      SIGPROF, &ignore_sigprof_action, &saved_sigprof_action));
+#   endif  // GTEST_OS_LINUX
+
+#   if GTEST_HAS_CLONE
+  const bool use_fork = GTEST_FLAG(death_test_use_fork);
+
+  if (!use_fork) {
+    static const bool stack_grows_down = StackGrowsDown();
+    const auto stack_size = static_cast<size_t>(getpagesize());
+    // MMAP_ANONYMOUS is not defined on Mac, so we use MAP_ANON instead.
+    void* const stack = mmap(nullptr, stack_size, PROT_READ | PROT_WRITE,
+                             MAP_ANON | MAP_PRIVATE, -1, 0);
+    GTEST_DEATH_TEST_CHECK_(stack != MAP_FAILED);
+
+    // Maximum stack alignment in bytes:  For a downward-growing stack, this
+    // amount is subtracted from size of the stack space to get an address
+    // that is within the stack space and is aligned on all systems we care
+    // about.  As far as I know there is no ABI with stack alignment greater
+    // than 64.  We assume stack and stack_size already have alignment of
+    // kMaxStackAlignment.
+    const size_t kMaxStackAlignment = 64;
+    void* const stack_top =
+        static_cast<char*>(stack) +
+            (stack_grows_down ? stack_size - kMaxStackAlignment : 0);
+    GTEST_DEATH_TEST_CHECK_(
+        static_cast<size_t>(stack_size) > kMaxStackAlignment &&
+        reinterpret_cast<uintptr_t>(stack_top) % kMaxStackAlignment == 0);
+
+    child_pid = clone(&ExecDeathTestChildMain, stack_top, SIGCHLD, &args);
+
+    GTEST_DEATH_TEST_CHECK_(munmap(stack, stack_size) != -1);
+  }
+#   else
+  const bool use_fork = true;
+#   endif  // GTEST_HAS_CLONE
+
+  if (use_fork && (child_pid = fork()) == 0) {
+      ExecDeathTestChildMain(&args);
+      _exit(0);
+  }
+#  endif  // GTEST_OS_QNX
+#  if GTEST_OS_LINUX
+  GTEST_DEATH_TEST_CHECK_SYSCALL_(
+      sigaction(SIGPROF, &saved_sigprof_action, nullptr));
+#  endif  // GTEST_OS_LINUX
+
+  GTEST_DEATH_TEST_CHECK_(child_pid != -1);
+  return child_pid;
+}
+
+// The AssumeRole process for a fork-and-exec death test.  It re-executes the
+// main program from the beginning, setting the --gtest_filter
+// and --gtest_internal_run_death_test flags to cause only the current
+// death test to be re-run.
+DeathTest::TestRole ExecDeathTest::AssumeRole() {
+  const UnitTestImpl* const impl = GetUnitTestImpl();
+  const InternalRunDeathTestFlag* const flag =
+      impl->internal_run_death_test_flag();
+  const TestInfo* const info = impl->current_test_info();
+  const int death_test_index = info->result()->death_test_count();
+
+  if (flag != nullptr) {
+    set_write_fd(flag->write_fd());
+    return EXECUTE_TEST;
+  }
+
+  int pipe_fd[2];
+  GTEST_DEATH_TEST_CHECK_(pipe(pipe_fd) != -1);
+  // Clear the close-on-exec flag on the write end of the pipe, lest
+  // it be closed when the child process does an exec:
+  GTEST_DEATH_TEST_CHECK_(fcntl(pipe_fd[1], F_SETFD, 0) != -1);
+
+  const std::string filter_flag = std::string("--") + GTEST_FLAG_PREFIX_ +
+                                  kFilterFlag + "=" + info->test_suite_name() +
+                                  "." + info->name();
+  const std::string internal_flag =
+      std::string("--") + GTEST_FLAG_PREFIX_ + kInternalRunDeathTestFlag + "="
+      + file_ + "|" + StreamableToString(line_) + "|"
+      + StreamableToString(death_test_index) + "|"
+      + StreamableToString(pipe_fd[1]);
+  Arguments args;
+  args.AddArguments(GetArgvsForDeathTestChildProcess());
+  args.AddArgument(filter_flag.c_str());
+  args.AddArgument(internal_flag.c_str());
+
+  DeathTest::set_last_death_test_message("");
+
+  CaptureStderr();
+  // See the comment in NoExecDeathTest::AssumeRole for why the next line
+  // is necessary.
+  FlushInfoLog();
+
+  const pid_t child_pid = ExecDeathTestSpawnChild(args.Argv(), pipe_fd[0]);
+  GTEST_DEATH_TEST_CHECK_SYSCALL_(close(pipe_fd[1]));
+  set_child_pid(child_pid);
+  set_read_fd(pipe_fd[0]);
+  set_spawned(true);
+  return OVERSEE_TEST;
+}
+
+# endif  // !GTEST_OS_WINDOWS
+
+// Creates a concrete DeathTest-derived class that depends on the
+// --gtest_death_test_style flag, and sets the pointer pointed to
+// by the "test" argument to its address.  If the test should be
+// skipped, sets that pointer to NULL.  Returns true, unless the
+// flag is set to an invalid value.
+bool DefaultDeathTestFactory::Create(const char* statement,
+                                     Matcher<const std::string&> matcher,
+                                     const char* file, int line,
+                                     DeathTest** test) {
+  UnitTestImpl* const impl = GetUnitTestImpl();
+  const InternalRunDeathTestFlag* const flag =
+      impl->internal_run_death_test_flag();
+  const int death_test_index = impl->current_test_info()
+      ->increment_death_test_count();
+
+  if (flag != nullptr) {
+    if (death_test_index > flag->index()) {
+      DeathTest::set_last_death_test_message(
+          "Death test count (" + StreamableToString(death_test_index)
+          + ") somehow exceeded expected maximum ("
+          + StreamableToString(flag->index()) + ")");
+      return false;
+    }
+
+    if (!(flag->file() == file && flag->line() == line &&
+          flag->index() == death_test_index)) {
+      *test = nullptr;
+      return true;
+    }
+  }
+
+# if GTEST_OS_WINDOWS
+
+  if (GTEST_FLAG(death_test_style) == "threadsafe" ||
+      GTEST_FLAG(death_test_style) == "fast") {
+    *test = new WindowsDeathTest(statement, std::move(matcher), file, line);
+  }
+
+# elif GTEST_OS_FUCHSIA
+
+  if (GTEST_FLAG(death_test_style) == "threadsafe" ||
+      GTEST_FLAG(death_test_style) == "fast") {
+    *test = new FuchsiaDeathTest(statement, std::move(matcher), file, line);
+  }
+
+# else
+
+  if (GTEST_FLAG(death_test_style) == "threadsafe") {
+    *test = new ExecDeathTest(statement, std::move(matcher), file, line);
+  } else if (GTEST_FLAG(death_test_style) == "fast") {
+    *test = new NoExecDeathTest(statement, std::move(matcher));
+  }
+
+# endif  // GTEST_OS_WINDOWS
+
+  else {  // NOLINT - this is more readable than unbalanced brackets inside #if.
+    DeathTest::set_last_death_test_message(
+        "Unknown death test style \"" + GTEST_FLAG(death_test_style)
+        + "\" encountered");
+    return false;
+  }
+
+  return true;
+}
+
+# if GTEST_OS_WINDOWS
+// Recreates the pipe and event handles from the provided parameters,
+// signals the event, and returns a file descriptor wrapped around the pipe
+// handle. This function is called in the child process only.
+static int GetStatusFileDescriptor(unsigned int parent_process_id,
+                            size_t write_handle_as_size_t,
+                            size_t event_handle_as_size_t) {
+  AutoHandle parent_process_handle(::OpenProcess(PROCESS_DUP_HANDLE,
+                                                   FALSE,  // Non-inheritable.
+                                                   parent_process_id));
+  if (parent_process_handle.Get() == INVALID_HANDLE_VALUE) {
+    DeathTestAbort("Unable to open parent process " +
+                   StreamableToString(parent_process_id));
+  }
+
+  GTEST_CHECK_(sizeof(HANDLE) <= sizeof(size_t));
+
+  const HANDLE write_handle =
+      reinterpret_cast<HANDLE>(write_handle_as_size_t);
+  HANDLE dup_write_handle;
+
+  // The newly initialized handle is accessible only in the parent
+  // process. To obtain one accessible within the child, we need to use
+  // DuplicateHandle.
+  if (!::DuplicateHandle(parent_process_handle.Get(), write_handle,
+                         ::GetCurrentProcess(), &dup_write_handle,
+                         0x0,    // Requested privileges ignored since
+                                 // DUPLICATE_SAME_ACCESS is used.
+                         FALSE,  // Request non-inheritable handler.
+                         DUPLICATE_SAME_ACCESS)) {
+    DeathTestAbort("Unable to duplicate the pipe handle " +
+                   StreamableToString(write_handle_as_size_t) +
+                   " from the parent process " +
+                   StreamableToString(parent_process_id));
+  }
+
+  const HANDLE event_handle = reinterpret_cast<HANDLE>(event_handle_as_size_t);
+  HANDLE dup_event_handle;
+
+  if (!::DuplicateHandle(parent_process_handle.Get(), event_handle,
+                         ::GetCurrentProcess(), &dup_event_handle,
+                         0x0,
+                         FALSE,
+                         DUPLICATE_SAME_ACCESS)) {
+    DeathTestAbort("Unable to duplicate the event handle " +
+                   StreamableToString(event_handle_as_size_t) +
+                   " from the parent process " +
+                   StreamableToString(parent_process_id));
+  }
+
+  const int write_fd =
+      ::_open_osfhandle(reinterpret_cast<intptr_t>(dup_write_handle), O_APPEND);
+  if (write_fd == -1) {
+    DeathTestAbort("Unable to convert pipe handle " +
+                   StreamableToString(write_handle_as_size_t) +
+                   " to a file descriptor");
+  }
+
+  // Signals the parent that the write end of the pipe has been acquired
+  // so the parent can release its own write end.
+  ::SetEvent(dup_event_handle);
+
+  return write_fd;
+}
+# endif  // GTEST_OS_WINDOWS
+
+// Returns a newly created InternalRunDeathTestFlag object with fields
+// initialized from the GTEST_FLAG(internal_run_death_test) flag if
+// the flag is specified; otherwise returns NULL.
+InternalRunDeathTestFlag* ParseInternalRunDeathTestFlag() {
+  if (GTEST_FLAG(internal_run_death_test) == "") return nullptr;
+
+  // GTEST_HAS_DEATH_TEST implies that we have ::std::string, so we
+  // can use it here.
+  int line = -1;
+  int index = -1;
+  ::std::vector< ::std::string> fields;
+  SplitString(GTEST_FLAG(internal_run_death_test).c_str(), '|', &fields);
+  int write_fd = -1;
+
+# if GTEST_OS_WINDOWS
+
+  unsigned int parent_process_id = 0;
+  size_t write_handle_as_size_t = 0;
+  size_t event_handle_as_size_t = 0;
+
+  if (fields.size() != 6
+      || !ParseNaturalNumber(fields[1], &line)
+      || !ParseNaturalNumber(fields[2], &index)
+      || !ParseNaturalNumber(fields[3], &parent_process_id)
+      || !ParseNaturalNumber(fields[4], &write_handle_as_size_t)
+      || !ParseNaturalNumber(fields[5], &event_handle_as_size_t)) {
+    DeathTestAbort("Bad --gtest_internal_run_death_test flag: " +
+                   GTEST_FLAG(internal_run_death_test));
+  }
+  write_fd = GetStatusFileDescriptor(parent_process_id,
+                                     write_handle_as_size_t,
+                                     event_handle_as_size_t);
+
+# elif GTEST_OS_FUCHSIA
+
+  if (fields.size() != 3
+      || !ParseNaturalNumber(fields[1], &line)
+      || !ParseNaturalNumber(fields[2], &index)) {
+    DeathTestAbort("Bad --gtest_internal_run_death_test flag: "
+        + GTEST_FLAG(internal_run_death_test));
+  }
+
+# else
+
+  if (fields.size() != 4
+      || !ParseNaturalNumber(fields[1], &line)
+      || !ParseNaturalNumber(fields[2], &index)
+      || !ParseNaturalNumber(fields[3], &write_fd)) {
+    DeathTestAbort("Bad --gtest_internal_run_death_test flag: "
+        + GTEST_FLAG(internal_run_death_test));
+  }
+
+# endif  // GTEST_OS_WINDOWS
+
+  return new InternalRunDeathTestFlag(fields[0], line, index, write_fd);
+}
+
+}  // namespace internal
+
+#endif  // GTEST_HAS_DEATH_TEST
+
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googletest/src/gtest-filepath.cc b/build/_deps/googletest-src/googletest/src/gtest-filepath.cc
new file mode 100644
index 0000000000000000000000000000000000000000..bd7b99ff03e49616afd07ce961351dd7928ebe8f
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/src/gtest-filepath.cc
@@ -0,0 +1,379 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "gtest/internal/gtest-filepath.h"
+
+#include <stdlib.h>
+#include "gtest/internal/gtest-port.h"
+#include "gtest/gtest-message.h"
+
+#if GTEST_OS_WINDOWS_MOBILE
+# include <windows.h>
+#elif GTEST_OS_WINDOWS
+# include <direct.h>
+# include <io.h>
+#else
+# include <limits.h>
+# include <climits>  // Some Linux distributions define PATH_MAX here.
+#endif  // GTEST_OS_WINDOWS_MOBILE
+
+#include "gtest/internal/gtest-string.h"
+
+#if GTEST_OS_WINDOWS
+# define GTEST_PATH_MAX_ _MAX_PATH
+#elif defined(PATH_MAX)
+# define GTEST_PATH_MAX_ PATH_MAX
+#elif defined(_XOPEN_PATH_MAX)
+# define GTEST_PATH_MAX_ _XOPEN_PATH_MAX
+#else
+# define GTEST_PATH_MAX_ _POSIX_PATH_MAX
+#endif  // GTEST_OS_WINDOWS
+
+namespace testing {
+namespace internal {
+
+#if GTEST_OS_WINDOWS
+// On Windows, '\\' is the standard path separator, but many tools and the
+// Windows API also accept '/' as an alternate path separator. Unless otherwise
+// noted, a file path can contain either kind of path separators, or a mixture
+// of them.
+const char kPathSeparator = '\\';
+const char kAlternatePathSeparator = '/';
+const char kAlternatePathSeparatorString[] = "/";
+# if GTEST_OS_WINDOWS_MOBILE
+// Windows CE doesn't have a current directory. You should not use
+// the current directory in tests on Windows CE, but this at least
+// provides a reasonable fallback.
+const char kCurrentDirectoryString[] = "\\";
+// Windows CE doesn't define INVALID_FILE_ATTRIBUTES
+const DWORD kInvalidFileAttributes = 0xffffffff;
+# else
+const char kCurrentDirectoryString[] = ".\\";
+# endif  // GTEST_OS_WINDOWS_MOBILE
+#else
+const char kPathSeparator = '/';
+const char kCurrentDirectoryString[] = "./";
+#endif  // GTEST_OS_WINDOWS
+
+// Returns whether the given character is a valid path separator.
+static bool IsPathSeparator(char c) {
+#if GTEST_HAS_ALT_PATH_SEP_
+  return (c == kPathSeparator) || (c == kAlternatePathSeparator);
+#else
+  return c == kPathSeparator;
+#endif
+}
+
+// Returns the current working directory, or "" if unsuccessful.
+FilePath FilePath::GetCurrentDir() {
+#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || \
+    GTEST_OS_WINDOWS_RT || ARDUINO || defined(ESP_PLATFORM)
+  // These platforms do not have a current directory, so we just return
+  // something reasonable.
+  return FilePath(kCurrentDirectoryString);
+#elif GTEST_OS_WINDOWS
+  char cwd[GTEST_PATH_MAX_ + 1] = { '\0' };
+  return FilePath(_getcwd(cwd, sizeof(cwd)) == nullptr ? "" : cwd);
+#else
+  char cwd[GTEST_PATH_MAX_ + 1] = { '\0' };
+  char* result = getcwd(cwd, sizeof(cwd));
+# if GTEST_OS_NACL
+  // getcwd will likely fail in NaCl due to the sandbox, so return something
+  // reasonable. The user may have provided a shim implementation for getcwd,
+  // however, so fallback only when failure is detected.
+  return FilePath(result == nullptr ? kCurrentDirectoryString : cwd);
+# endif  // GTEST_OS_NACL
+  return FilePath(result == nullptr ? "" : cwd);
+#endif  // GTEST_OS_WINDOWS_MOBILE
+}
+
+// Returns a copy of the FilePath with the case-insensitive extension removed.
+// Example: FilePath("dir/file.exe").RemoveExtension("EXE") returns
+// FilePath("dir/file"). If a case-insensitive extension is not
+// found, returns a copy of the original FilePath.
+FilePath FilePath::RemoveExtension(const char* extension) const {
+  const std::string dot_extension = std::string(".") + extension;
+  if (String::EndsWithCaseInsensitive(pathname_, dot_extension)) {
+    return FilePath(pathname_.substr(
+        0, pathname_.length() - dot_extension.length()));
+  }
+  return *this;
+}
+
+// Returns a pointer to the last occurrence of a valid path separator in
+// the FilePath. On Windows, for example, both '/' and '\' are valid path
+// separators. Returns NULL if no path separator was found.
+const char* FilePath::FindLastPathSeparator() const {
+  const char* const last_sep = strrchr(c_str(), kPathSeparator);
+#if GTEST_HAS_ALT_PATH_SEP_
+  const char* const last_alt_sep = strrchr(c_str(), kAlternatePathSeparator);
+  // Comparing two pointers of which only one is NULL is undefined.
+  if (last_alt_sep != nullptr &&
+      (last_sep == nullptr || last_alt_sep > last_sep)) {
+    return last_alt_sep;
+  }
+#endif
+  return last_sep;
+}
+
+// Returns a copy of the FilePath with the directory part removed.
+// Example: FilePath("path/to/file").RemoveDirectoryName() returns
+// FilePath("file"). If there is no directory part ("just_a_file"), it returns
+// the FilePath unmodified. If there is no file part ("just_a_dir/") it
+// returns an empty FilePath ("").
+// On Windows platform, '\' is the path separator, otherwise it is '/'.
+FilePath FilePath::RemoveDirectoryName() const {
+  const char* const last_sep = FindLastPathSeparator();
+  return last_sep ? FilePath(last_sep + 1) : *this;
+}
+
+// RemoveFileName returns the directory path with the filename removed.
+// Example: FilePath("path/to/file").RemoveFileName() returns "path/to/".
+// If the FilePath is "a_file" or "/a_file", RemoveFileName returns
+// FilePath("./") or, on Windows, FilePath(".\\"). If the filepath does
+// not have a file, like "just/a/dir/", it returns the FilePath unmodified.
+// On Windows platform, '\' is the path separator, otherwise it is '/'.
+FilePath FilePath::RemoveFileName() const {
+  const char* const last_sep = FindLastPathSeparator();
+  std::string dir;
+  if (last_sep) {
+    dir = std::string(c_str(), static_cast<size_t>(last_sep + 1 - c_str()));
+  } else {
+    dir = kCurrentDirectoryString;
+  }
+  return FilePath(dir);
+}
+
+// Helper functions for naming files in a directory for xml output.
+
+// Given directory = "dir", base_name = "test", number = 0,
+// extension = "xml", returns "dir/test.xml". If number is greater
+// than zero (e.g., 12), returns "dir/test_12.xml".
+// On Windows platform, uses \ as the separator rather than /.
+FilePath FilePath::MakeFileName(const FilePath& directory,
+                                const FilePath& base_name,
+                                int number,
+                                const char* extension) {
+  std::string file;
+  if (number == 0) {
+    file = base_name.string() + "." + extension;
+  } else {
+    file = base_name.string() + "_" + StreamableToString(number)
+        + "." + extension;
+  }
+  return ConcatPaths(directory, FilePath(file));
+}
+
+// Given directory = "dir", relative_path = "test.xml", returns "dir/test.xml".
+// On Windows, uses \ as the separator rather than /.
+FilePath FilePath::ConcatPaths(const FilePath& directory,
+                               const FilePath& relative_path) {
+  if (directory.IsEmpty())
+    return relative_path;
+  const FilePath dir(directory.RemoveTrailingPathSeparator());
+  return FilePath(dir.string() + kPathSeparator + relative_path.string());
+}
+
+// Returns true if pathname describes something findable in the file-system,
+// either a file, directory, or whatever.
+bool FilePath::FileOrDirectoryExists() const {
+#if GTEST_OS_WINDOWS_MOBILE
+  LPCWSTR unicode = String::AnsiToUtf16(pathname_.c_str());
+  const DWORD attributes = GetFileAttributes(unicode);
+  delete [] unicode;
+  return attributes != kInvalidFileAttributes;
+#else
+  posix::StatStruct file_stat;
+  return posix::Stat(pathname_.c_str(), &file_stat) == 0;
+#endif  // GTEST_OS_WINDOWS_MOBILE
+}
+
+// Returns true if pathname describes a directory in the file-system
+// that exists.
+bool FilePath::DirectoryExists() const {
+  bool result = false;
+#if GTEST_OS_WINDOWS
+  // Don't strip off trailing separator if path is a root directory on
+  // Windows (like "C:\\").
+  const FilePath& path(IsRootDirectory() ? *this :
+                                           RemoveTrailingPathSeparator());
+#else
+  const FilePath& path(*this);
+#endif
+
+#if GTEST_OS_WINDOWS_MOBILE
+  LPCWSTR unicode = String::AnsiToUtf16(path.c_str());
+  const DWORD attributes = GetFileAttributes(unicode);
+  delete [] unicode;
+  if ((attributes != kInvalidFileAttributes) &&
+      (attributes & FILE_ATTRIBUTE_DIRECTORY)) {
+    result = true;
+  }
+#else
+  posix::StatStruct file_stat;
+  result = posix::Stat(path.c_str(), &file_stat) == 0 &&
+      posix::IsDir(file_stat);
+#endif  // GTEST_OS_WINDOWS_MOBILE
+
+  return result;
+}
+
+// Returns true if pathname describes a root directory. (Windows has one
+// root directory per disk drive.)
+bool FilePath::IsRootDirectory() const {
+#if GTEST_OS_WINDOWS
+  return pathname_.length() == 3 && IsAbsolutePath();
+#else
+  return pathname_.length() == 1 && IsPathSeparator(pathname_.c_str()[0]);
+#endif
+}
+
+// Returns true if pathname describes an absolute path.
+bool FilePath::IsAbsolutePath() const {
+  const char* const name = pathname_.c_str();
+#if GTEST_OS_WINDOWS
+  return pathname_.length() >= 3 &&
+     ((name[0] >= 'a' && name[0] <= 'z') ||
+      (name[0] >= 'A' && name[0] <= 'Z')) &&
+     name[1] == ':' &&
+     IsPathSeparator(name[2]);
+#else
+  return IsPathSeparator(name[0]);
+#endif
+}
+
+// Returns a pathname for a file that does not currently exist. The pathname
+// will be directory/base_name.extension or
+// directory/base_name_<number>.extension if directory/base_name.extension
+// already exists. The number will be incremented until a pathname is found
+// that does not already exist.
+// Examples: 'dir/foo_test.xml' or 'dir/foo_test_1.xml'.
+// There could be a race condition if two or more processes are calling this
+// function at the same time -- they could both pick the same filename.
+FilePath FilePath::GenerateUniqueFileName(const FilePath& directory,
+                                          const FilePath& base_name,
+                                          const char* extension) {
+  FilePath full_pathname;
+  int number = 0;
+  do {
+    full_pathname.Set(MakeFileName(directory, base_name, number++, extension));
+  } while (full_pathname.FileOrDirectoryExists());
+  return full_pathname;
+}
+
+// Returns true if FilePath ends with a path separator, which indicates that
+// it is intended to represent a directory. Returns false otherwise.
+// This does NOT check that a directory (or file) actually exists.
+bool FilePath::IsDirectory() const {
+  return !pathname_.empty() &&
+         IsPathSeparator(pathname_.c_str()[pathname_.length() - 1]);
+}
+
+// Create directories so that path exists. Returns true if successful or if
+// the directories already exist; returns false if unable to create directories
+// for any reason.
+bool FilePath::CreateDirectoriesRecursively() const {
+  if (!this->IsDirectory()) {
+    return false;
+  }
+
+  if (pathname_.length() == 0 || this->DirectoryExists()) {
+    return true;
+  }
+
+  const FilePath parent(this->RemoveTrailingPathSeparator().RemoveFileName());
+  return parent.CreateDirectoriesRecursively() && this->CreateFolder();
+}
+
+// Create the directory so that path exists. Returns true if successful or
+// if the directory already exists; returns false if unable to create the
+// directory for any reason, including if the parent directory does not
+// exist. Not named "CreateDirectory" because that's a macro on Windows.
+bool FilePath::CreateFolder() const {
+#if GTEST_OS_WINDOWS_MOBILE
+  FilePath removed_sep(this->RemoveTrailingPathSeparator());
+  LPCWSTR unicode = String::AnsiToUtf16(removed_sep.c_str());
+  int result = CreateDirectory(unicode, nullptr) ? 0 : -1;
+  delete [] unicode;
+#elif GTEST_OS_WINDOWS
+  int result = _mkdir(pathname_.c_str());
+#else
+  int result = mkdir(pathname_.c_str(), 0777);
+#endif  // GTEST_OS_WINDOWS_MOBILE
+
+  if (result == -1) {
+    return this->DirectoryExists();  // An error is OK if the directory exists.
+  }
+  return true;  // No error.
+}
+
+// If input name has a trailing separator character, remove it and return the
+// name, otherwise return the name string unmodified.
+// On Windows platform, uses \ as the separator, other platforms use /.
+FilePath FilePath::RemoveTrailingPathSeparator() const {
+  return IsDirectory()
+      ? FilePath(pathname_.substr(0, pathname_.length() - 1))
+      : *this;
+}
+
+// Removes any redundant separators that might be in the pathname.
+// For example, "bar///foo" becomes "bar/foo". Does not eliminate other
+// redundancies that might be in a pathname involving "." or "..".
+void FilePath::Normalize() {
+  if (pathname_.c_str() == nullptr) {
+    pathname_ = "";
+    return;
+  }
+  const char* src = pathname_.c_str();
+  char* const dest = new char[pathname_.length() + 1];
+  char* dest_ptr = dest;
+  memset(dest_ptr, 0, pathname_.length() + 1);
+
+  while (*src != '\0') {
+    *dest_ptr = *src;
+    if (!IsPathSeparator(*src)) {
+      src++;
+    } else {
+#if GTEST_HAS_ALT_PATH_SEP_
+      if (*dest_ptr == kAlternatePathSeparator) {
+        *dest_ptr = kPathSeparator;
+      }
+#endif
+      while (IsPathSeparator(*src))
+        src++;
+    }
+    dest_ptr++;
+  }
+  *dest_ptr = '\0';
+  pathname_ = dest;
+  delete[] dest;
+}
+
+}  // namespace internal
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googletest/src/gtest-internal-inl.h b/build/_deps/googletest-src/googletest/src/gtest-internal-inl.h
new file mode 100644
index 0000000000000000000000000000000000000000..8ed70daab0943969d5a3b3b88b1196775f0b1d3a
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/src/gtest-internal-inl.h
@@ -0,0 +1,1211 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Utility functions and classes used by the Google C++ testing framework.//
+// This file contains purely Google Test's internal implementation.  Please
+// DO NOT #INCLUDE IT IN A USER PROGRAM.
+
+#ifndef GTEST_SRC_GTEST_INTERNAL_INL_H_
+#define GTEST_SRC_GTEST_INTERNAL_INL_H_
+
+#ifndef _WIN32_WCE
+# include <errno.h>
+#endif  // !_WIN32_WCE
+#include <stddef.h>
+#include <stdlib.h>  // For strtoll/_strtoul64/malloc/free.
+#include <string.h>  // For memmove.
+
+#include <algorithm>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "gtest/internal/gtest-port.h"
+
+#if GTEST_CAN_STREAM_RESULTS_
+# include <arpa/inet.h>  // NOLINT
+# include <netdb.h>  // NOLINT
+#endif
+
+#if GTEST_OS_WINDOWS
+# include <windows.h>  // NOLINT
+#endif  // GTEST_OS_WINDOWS
+
+#include "gtest/gtest.h"
+#include "gtest/gtest-spi.h"
+
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
+/* class A needs to have dll-interface to be used by clients of class B */)
+
+namespace testing {
+
+// Declares the flags.
+//
+// We don't want the users to modify this flag in the code, but want
+// Google Test's own unit tests to be able to access it. Therefore we
+// declare it here as opposed to in gtest.h.
+GTEST_DECLARE_bool_(death_test_use_fork);
+
+namespace internal {
+
+// The value of GetTestTypeId() as seen from within the Google Test
+// library.  This is solely for testing GetTestTypeId().
+GTEST_API_ extern const TypeId kTestTypeIdInGoogleTest;
+
+// Names of the flags (needed for parsing Google Test flags).
+const char kAlsoRunDisabledTestsFlag[] = "also_run_disabled_tests";
+const char kBreakOnFailureFlag[] = "break_on_failure";
+const char kCatchExceptionsFlag[] = "catch_exceptions";
+const char kColorFlag[] = "color";
+const char kFilterFlag[] = "filter";
+const char kListTestsFlag[] = "list_tests";
+const char kOutputFlag[] = "output";
+const char kPrintTimeFlag[] = "print_time";
+const char kPrintUTF8Flag[] = "print_utf8";
+const char kRandomSeedFlag[] = "random_seed";
+const char kRepeatFlag[] = "repeat";
+const char kShuffleFlag[] = "shuffle";
+const char kStackTraceDepthFlag[] = "stack_trace_depth";
+const char kStreamResultToFlag[] = "stream_result_to";
+const char kThrowOnFailureFlag[] = "throw_on_failure";
+const char kFlagfileFlag[] = "flagfile";
+
+// A valid random seed must be in [1, kMaxRandomSeed].
+const int kMaxRandomSeed = 99999;
+
+// g_help_flag is true if and only if the --help flag or an equivalent form
+// is specified on the command line.
+GTEST_API_ extern bool g_help_flag;
+
+// Returns the current time in milliseconds.
+GTEST_API_ TimeInMillis GetTimeInMillis();
+
+// Returns true if and only if Google Test should use colors in the output.
+GTEST_API_ bool ShouldUseColor(bool stdout_is_tty);
+
+// Formats the given time in milliseconds as seconds.
+GTEST_API_ std::string FormatTimeInMillisAsSeconds(TimeInMillis ms);
+
+// Converts the given time in milliseconds to a date string in the ISO 8601
+// format, without the timezone information.  N.B.: due to the use the
+// non-reentrant localtime() function, this function is not thread safe.  Do
+// not use it in any code that can be called from multiple threads.
+GTEST_API_ std::string FormatEpochTimeInMillisAsIso8601(TimeInMillis ms);
+
+// Parses a string for an Int32 flag, in the form of "--flag=value".
+//
+// On success, stores the value of the flag in *value, and returns
+// true.  On failure, returns false without changing *value.
+GTEST_API_ bool ParseInt32Flag(
+    const char* str, const char* flag, Int32* value);
+
+// Returns a random seed in range [1, kMaxRandomSeed] based on the
+// given --gtest_random_seed flag value.
+inline int GetRandomSeedFromFlag(Int32 random_seed_flag) {
+  const unsigned int raw_seed = (random_seed_flag == 0) ?
+      static_cast<unsigned int>(GetTimeInMillis()) :
+      static_cast<unsigned int>(random_seed_flag);
+
+  // Normalizes the actual seed to range [1, kMaxRandomSeed] such that
+  // it's easy to type.
+  const int normalized_seed =
+      static_cast<int>((raw_seed - 1U) %
+                       static_cast<unsigned int>(kMaxRandomSeed)) + 1;
+  return normalized_seed;
+}
+
+// Returns the first valid random seed after 'seed'.  The behavior is
+// undefined if 'seed' is invalid.  The seed after kMaxRandomSeed is
+// considered to be 1.
+inline int GetNextRandomSeed(int seed) {
+  GTEST_CHECK_(1 <= seed && seed <= kMaxRandomSeed)
+      << "Invalid random seed " << seed << " - must be in [1, "
+      << kMaxRandomSeed << "].";
+  const int next_seed = seed + 1;
+  return (next_seed > kMaxRandomSeed) ? 1 : next_seed;
+}
+
+// This class saves the values of all Google Test flags in its c'tor, and
+// restores them in its d'tor.
+class GTestFlagSaver {
+ public:
+  // The c'tor.
+  GTestFlagSaver() {
+    also_run_disabled_tests_ = GTEST_FLAG(also_run_disabled_tests);
+    break_on_failure_ = GTEST_FLAG(break_on_failure);
+    catch_exceptions_ = GTEST_FLAG(catch_exceptions);
+    color_ = GTEST_FLAG(color);
+    death_test_style_ = GTEST_FLAG(death_test_style);
+    death_test_use_fork_ = GTEST_FLAG(death_test_use_fork);
+    filter_ = GTEST_FLAG(filter);
+    internal_run_death_test_ = GTEST_FLAG(internal_run_death_test);
+    list_tests_ = GTEST_FLAG(list_tests);
+    output_ = GTEST_FLAG(output);
+    print_time_ = GTEST_FLAG(print_time);
+    print_utf8_ = GTEST_FLAG(print_utf8);
+    random_seed_ = GTEST_FLAG(random_seed);
+    repeat_ = GTEST_FLAG(repeat);
+    shuffle_ = GTEST_FLAG(shuffle);
+    stack_trace_depth_ = GTEST_FLAG(stack_trace_depth);
+    stream_result_to_ = GTEST_FLAG(stream_result_to);
+    throw_on_failure_ = GTEST_FLAG(throw_on_failure);
+  }
+
+  // The d'tor is not virtual.  DO NOT INHERIT FROM THIS CLASS.
+  ~GTestFlagSaver() {
+    GTEST_FLAG(also_run_disabled_tests) = also_run_disabled_tests_;
+    GTEST_FLAG(break_on_failure) = break_on_failure_;
+    GTEST_FLAG(catch_exceptions) = catch_exceptions_;
+    GTEST_FLAG(color) = color_;
+    GTEST_FLAG(death_test_style) = death_test_style_;
+    GTEST_FLAG(death_test_use_fork) = death_test_use_fork_;
+    GTEST_FLAG(filter) = filter_;
+    GTEST_FLAG(internal_run_death_test) = internal_run_death_test_;
+    GTEST_FLAG(list_tests) = list_tests_;
+    GTEST_FLAG(output) = output_;
+    GTEST_FLAG(print_time) = print_time_;
+    GTEST_FLAG(print_utf8) = print_utf8_;
+    GTEST_FLAG(random_seed) = random_seed_;
+    GTEST_FLAG(repeat) = repeat_;
+    GTEST_FLAG(shuffle) = shuffle_;
+    GTEST_FLAG(stack_trace_depth) = stack_trace_depth_;
+    GTEST_FLAG(stream_result_to) = stream_result_to_;
+    GTEST_FLAG(throw_on_failure) = throw_on_failure_;
+  }
+
+ private:
+  // Fields for saving the original values of flags.
+  bool also_run_disabled_tests_;
+  bool break_on_failure_;
+  bool catch_exceptions_;
+  std::string color_;
+  std::string death_test_style_;
+  bool death_test_use_fork_;
+  std::string filter_;
+  std::string internal_run_death_test_;
+  bool list_tests_;
+  std::string output_;
+  bool print_time_;
+  bool print_utf8_;
+  internal::Int32 random_seed_;
+  internal::Int32 repeat_;
+  bool shuffle_;
+  internal::Int32 stack_trace_depth_;
+  std::string stream_result_to_;
+  bool throw_on_failure_;
+} GTEST_ATTRIBUTE_UNUSED_;
+
+// Converts a Unicode code point to a narrow string in UTF-8 encoding.
+// code_point parameter is of type UInt32 because wchar_t may not be
+// wide enough to contain a code point.
+// If the code_point is not a valid Unicode code point
+// (i.e. outside of Unicode range U+0 to U+10FFFF) it will be converted
+// to "(Invalid Unicode 0xXXXXXXXX)".
+GTEST_API_ std::string CodePointToUtf8(UInt32 code_point);
+
+// Converts a wide string to a narrow string in UTF-8 encoding.
+// The wide string is assumed to have the following encoding:
+//   UTF-16 if sizeof(wchar_t) == 2 (on Windows, Cygwin)
+//   UTF-32 if sizeof(wchar_t) == 4 (on Linux)
+// Parameter str points to a null-terminated wide string.
+// Parameter num_chars may additionally limit the number
+// of wchar_t characters processed. -1 is used when the entire string
+// should be processed.
+// If the string contains code points that are not valid Unicode code points
+// (i.e. outside of Unicode range U+0 to U+10FFFF) they will be output
+// as '(Invalid Unicode 0xXXXXXXXX)'. If the string is in UTF16 encoding
+// and contains invalid UTF-16 surrogate pairs, values in those pairs
+// will be encoded as individual Unicode characters from Basic Normal Plane.
+GTEST_API_ std::string WideStringToUtf8(const wchar_t* str, int num_chars);
+
+// Reads the GTEST_SHARD_STATUS_FILE environment variable, and creates the file
+// if the variable is present. If a file already exists at this location, this
+// function will write over it. If the variable is present, but the file cannot
+// be created, prints an error and exits.
+void WriteToShardStatusFileIfNeeded();
+
+// Checks whether sharding is enabled by examining the relevant
+// environment variable values. If the variables are present,
+// but inconsistent (e.g., shard_index >= total_shards), prints
+// an error and exits. If in_subprocess_for_death_test, sharding is
+// disabled because it must only be applied to the original test
+// process. Otherwise, we could filter out death tests we intended to execute.
+GTEST_API_ bool ShouldShard(const char* total_shards_str,
+                            const char* shard_index_str,
+                            bool in_subprocess_for_death_test);
+
+// Parses the environment variable var as an Int32. If it is unset,
+// returns default_val. If it is not an Int32, prints an error and
+// and aborts.
+GTEST_API_ Int32 Int32FromEnvOrDie(const char* env_var, Int32 default_val);
+
+// Given the total number of shards, the shard index, and the test id,
+// returns true if and only if the test should be run on this shard. The test id
+// is some arbitrary but unique non-negative integer assigned to each test
+// method. Assumes that 0 <= shard_index < total_shards.
+GTEST_API_ bool ShouldRunTestOnShard(
+    int total_shards, int shard_index, int test_id);
+
+// STL container utilities.
+
+// Returns the number of elements in the given container that satisfy
+// the given predicate.
+template <class Container, typename Predicate>
+inline int CountIf(const Container& c, Predicate predicate) {
+  // Implemented as an explicit loop since std::count_if() in libCstd on
+  // Solaris has a non-standard signature.
+  int count = 0;
+  for (typename Container::const_iterator it = c.begin(); it != c.end(); ++it) {
+    if (predicate(*it))
+      ++count;
+  }
+  return count;
+}
+
+// Applies a function/functor to each element in the container.
+template <class Container, typename Functor>
+void ForEach(const Container& c, Functor functor) {
+  std::for_each(c.begin(), c.end(), functor);
+}
+
+// Returns the i-th element of the vector, or default_value if i is not
+// in range [0, v.size()).
+template <typename E>
+inline E GetElementOr(const std::vector<E>& v, int i, E default_value) {
+  return (i < 0 || i >= static_cast<int>(v.size())) ? default_value
+                                                    : v[static_cast<size_t>(i)];
+}
+
+// Performs an in-place shuffle of a range of the vector's elements.
+// 'begin' and 'end' are element indices as an STL-style range;
+// i.e. [begin, end) are shuffled, where 'end' == size() means to
+// shuffle to the end of the vector.
+template <typename E>
+void ShuffleRange(internal::Random* random, int begin, int end,
+                  std::vector<E>* v) {
+  const int size = static_cast<int>(v->size());
+  GTEST_CHECK_(0 <= begin && begin <= size)
+      << "Invalid shuffle range start " << begin << ": must be in range [0, "
+      << size << "].";
+  GTEST_CHECK_(begin <= end && end <= size)
+      << "Invalid shuffle range finish " << end << ": must be in range ["
+      << begin << ", " << size << "].";
+
+  // Fisher-Yates shuffle, from
+  // http://en.wikipedia.org/wiki/Fisher-Yates_shuffle
+  for (int range_width = end - begin; range_width >= 2; range_width--) {
+    const int last_in_range = begin + range_width - 1;
+    const int selected =
+        begin +
+        static_cast<int>(random->Generate(static_cast<UInt32>(range_width)));
+    std::swap((*v)[static_cast<size_t>(selected)],
+              (*v)[static_cast<size_t>(last_in_range)]);
+  }
+}
+
+// Performs an in-place shuffle of the vector's elements.
+template <typename E>
+inline void Shuffle(internal::Random* random, std::vector<E>* v) {
+  ShuffleRange(random, 0, static_cast<int>(v->size()), v);
+}
+
+// A function for deleting an object.  Handy for being used as a
+// functor.
+template <typename T>
+static void Delete(T* x) {
+  delete x;
+}
+
+// A predicate that checks the key of a TestProperty against a known key.
+//
+// TestPropertyKeyIs is copyable.
+class TestPropertyKeyIs {
+ public:
+  // Constructor.
+  //
+  // TestPropertyKeyIs has NO default constructor.
+  explicit TestPropertyKeyIs(const std::string& key) : key_(key) {}
+
+  // Returns true if and only if the test name of test property matches on key_.
+  bool operator()(const TestProperty& test_property) const {
+    return test_property.key() == key_;
+  }
+
+ private:
+  std::string key_;
+};
+
+// Class UnitTestOptions.
+//
+// This class contains functions for processing options the user
+// specifies when running the tests.  It has only static members.
+//
+// In most cases, the user can specify an option using either an
+// environment variable or a command line flag.  E.g. you can set the
+// test filter using either GTEST_FILTER or --gtest_filter.  If both
+// the variable and the flag are present, the latter overrides the
+// former.
+class GTEST_API_ UnitTestOptions {
+ public:
+  // Functions for processing the gtest_output flag.
+
+  // Returns the output format, or "" for normal printed output.
+  static std::string GetOutputFormat();
+
+  // Returns the absolute path of the requested output file, or the
+  // default (test_detail.xml in the original working directory) if
+  // none was explicitly specified.
+  static std::string GetAbsolutePathToOutputFile();
+
+  // Functions for processing the gtest_filter flag.
+
+  // Returns true if and only if the wildcard pattern matches the string.
+  // The first ':' or '\0' character in pattern marks the end of it.
+  //
+  // This recursive algorithm isn't very efficient, but is clear and
+  // works well enough for matching test names, which are short.
+  static bool PatternMatchesString(const char *pattern, const char *str);
+
+  // Returns true if and only if the user-specified filter matches the test
+  // suite name and the test name.
+  static bool FilterMatchesTest(const std::string& test_suite_name,
+                                const std::string& test_name);
+
+#if GTEST_OS_WINDOWS
+  // Function for supporting the gtest_catch_exception flag.
+
+  // Returns EXCEPTION_EXECUTE_HANDLER if Google Test should handle the
+  // given SEH exception, or EXCEPTION_CONTINUE_SEARCH otherwise.
+  // This function is useful as an __except condition.
+  static int GTestShouldProcessSEH(DWORD exception_code);
+#endif  // GTEST_OS_WINDOWS
+
+  // Returns true if "name" matches the ':' separated list of glob-style
+  // filters in "filter".
+  static bool MatchesFilter(const std::string& name, const char* filter);
+};
+
+// Returns the current application's name, removing directory path if that
+// is present.  Used by UnitTestOptions::GetOutputFile.
+GTEST_API_ FilePath GetCurrentExecutableName();
+
+// The role interface for getting the OS stack trace as a string.
+class OsStackTraceGetterInterface {
+ public:
+  OsStackTraceGetterInterface() {}
+  virtual ~OsStackTraceGetterInterface() {}
+
+  // Returns the current OS stack trace as an std::string.  Parameters:
+  //
+  //   max_depth  - the maximum number of stack frames to be included
+  //                in the trace.
+  //   skip_count - the number of top frames to be skipped; doesn't count
+  //                against max_depth.
+  virtual std::string CurrentStackTrace(int max_depth, int skip_count) = 0;
+
+  // UponLeavingGTest() should be called immediately before Google Test calls
+  // user code. It saves some information about the current stack that
+  // CurrentStackTrace() will use to find and hide Google Test stack frames.
+  virtual void UponLeavingGTest() = 0;
+
+  // This string is inserted in place of stack frames that are part of
+  // Google Test's implementation.
+  static const char* const kElidedFramesMarker;
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(OsStackTraceGetterInterface);
+};
+
+// A working implementation of the OsStackTraceGetterInterface interface.
+class OsStackTraceGetter : public OsStackTraceGetterInterface {
+ public:
+  OsStackTraceGetter() {}
+
+  std::string CurrentStackTrace(int max_depth, int skip_count) override;
+  void UponLeavingGTest() override;
+
+ private:
+#if GTEST_HAS_ABSL
+  Mutex mutex_;  // Protects all internal state.
+
+  // We save the stack frame below the frame that calls user code.
+  // We do this because the address of the frame immediately below
+  // the user code changes between the call to UponLeavingGTest()
+  // and any calls to the stack trace code from within the user code.
+  void* caller_frame_ = nullptr;
+#endif  // GTEST_HAS_ABSL
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(OsStackTraceGetter);
+};
+
+// Information about a Google Test trace point.
+struct TraceInfo {
+  const char* file;
+  int line;
+  std::string message;
+};
+
+// This is the default global test part result reporter used in UnitTestImpl.
+// This class should only be used by UnitTestImpl.
+class DefaultGlobalTestPartResultReporter
+  : public TestPartResultReporterInterface {
+ public:
+  explicit DefaultGlobalTestPartResultReporter(UnitTestImpl* unit_test);
+  // Implements the TestPartResultReporterInterface. Reports the test part
+  // result in the current test.
+  void ReportTestPartResult(const TestPartResult& result) override;
+
+ private:
+  UnitTestImpl* const unit_test_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultGlobalTestPartResultReporter);
+};
+
+// This is the default per thread test part result reporter used in
+// UnitTestImpl. This class should only be used by UnitTestImpl.
+class DefaultPerThreadTestPartResultReporter
+    : public TestPartResultReporterInterface {
+ public:
+  explicit DefaultPerThreadTestPartResultReporter(UnitTestImpl* unit_test);
+  // Implements the TestPartResultReporterInterface. The implementation just
+  // delegates to the current global test part result reporter of *unit_test_.
+  void ReportTestPartResult(const TestPartResult& result) override;
+
+ private:
+  UnitTestImpl* const unit_test_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultPerThreadTestPartResultReporter);
+};
+
+// The private implementation of the UnitTest class.  We don't protect
+// the methods under a mutex, as this class is not accessible by a
+// user and the UnitTest class that delegates work to this class does
+// proper locking.
+class GTEST_API_ UnitTestImpl {
+ public:
+  explicit UnitTestImpl(UnitTest* parent);
+  virtual ~UnitTestImpl();
+
+  // There are two different ways to register your own TestPartResultReporter.
+  // You can register your own repoter to listen either only for test results
+  // from the current thread or for results from all threads.
+  // By default, each per-thread test result repoter just passes a new
+  // TestPartResult to the global test result reporter, which registers the
+  // test part result for the currently running test.
+
+  // Returns the global test part result reporter.
+  TestPartResultReporterInterface* GetGlobalTestPartResultReporter();
+
+  // Sets the global test part result reporter.
+  void SetGlobalTestPartResultReporter(
+      TestPartResultReporterInterface* reporter);
+
+  // Returns the test part result reporter for the current thread.
+  TestPartResultReporterInterface* GetTestPartResultReporterForCurrentThread();
+
+  // Sets the test part result reporter for the current thread.
+  void SetTestPartResultReporterForCurrentThread(
+      TestPartResultReporterInterface* reporter);
+
+  // Gets the number of successful test suites.
+  int successful_test_suite_count() const;
+
+  // Gets the number of failed test suites.
+  int failed_test_suite_count() const;
+
+  // Gets the number of all test suites.
+  int total_test_suite_count() const;
+
+  // Gets the number of all test suites that contain at least one test
+  // that should run.
+  int test_suite_to_run_count() const;
+
+  // Gets the number of successful tests.
+  int successful_test_count() const;
+
+  // Gets the number of skipped tests.
+  int skipped_test_count() const;
+
+  // Gets the number of failed tests.
+  int failed_test_count() const;
+
+  // Gets the number of disabled tests that will be reported in the XML report.
+  int reportable_disabled_test_count() const;
+
+  // Gets the number of disabled tests.
+  int disabled_test_count() const;
+
+  // Gets the number of tests to be printed in the XML report.
+  int reportable_test_count() const;
+
+  // Gets the number of all tests.
+  int total_test_count() const;
+
+  // Gets the number of tests that should run.
+  int test_to_run_count() const;
+
+  // Gets the time of the test program start, in ms from the start of the
+  // UNIX epoch.
+  TimeInMillis start_timestamp() const { return start_timestamp_; }
+
+  // Gets the elapsed time, in milliseconds.
+  TimeInMillis elapsed_time() const { return elapsed_time_; }
+
+  // Returns true if and only if the unit test passed (i.e. all test suites
+  // passed).
+  bool Passed() const { return !Failed(); }
+
+  // Returns true if and only if the unit test failed (i.e. some test suite
+  // failed or something outside of all tests failed).
+  bool Failed() const {
+    return failed_test_suite_count() > 0 || ad_hoc_test_result()->Failed();
+  }
+
+  // Gets the i-th test suite among all the test suites. i can range from 0 to
+  // total_test_suite_count() - 1. If i is not in that range, returns NULL.
+  const TestSuite* GetTestSuite(int i) const {
+    const int index = GetElementOr(test_suite_indices_, i, -1);
+    return index < 0 ? nullptr : test_suites_[static_cast<size_t>(i)];
+  }
+
+  //  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  const TestCase* GetTestCase(int i) const { return GetTestSuite(i); }
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  // Gets the i-th test suite among all the test suites. i can range from 0 to
+  // total_test_suite_count() - 1. If i is not in that range, returns NULL.
+  TestSuite* GetMutableSuiteCase(int i) {
+    const int index = GetElementOr(test_suite_indices_, i, -1);
+    return index < 0 ? nullptr : test_suites_[static_cast<size_t>(index)];
+  }
+
+  // Provides access to the event listener list.
+  TestEventListeners* listeners() { return &listeners_; }
+
+  // Returns the TestResult for the test that's currently running, or
+  // the TestResult for the ad hoc test if no test is running.
+  TestResult* current_test_result();
+
+  // Returns the TestResult for the ad hoc test.
+  const TestResult* ad_hoc_test_result() const { return &ad_hoc_test_result_; }
+
+  // Sets the OS stack trace getter.
+  //
+  // Does nothing if the input and the current OS stack trace getter
+  // are the same; otherwise, deletes the old getter and makes the
+  // input the current getter.
+  void set_os_stack_trace_getter(OsStackTraceGetterInterface* getter);
+
+  // Returns the current OS stack trace getter if it is not NULL;
+  // otherwise, creates an OsStackTraceGetter, makes it the current
+  // getter, and returns it.
+  OsStackTraceGetterInterface* os_stack_trace_getter();
+
+  // Returns the current OS stack trace as an std::string.
+  //
+  // The maximum number of stack frames to be included is specified by
+  // the gtest_stack_trace_depth flag.  The skip_count parameter
+  // specifies the number of top frames to be skipped, which doesn't
+  // count against the number of frames to be included.
+  //
+  // For example, if Foo() calls Bar(), which in turn calls
+  // CurrentOsStackTraceExceptTop(1), Foo() will be included in the
+  // trace but Bar() and CurrentOsStackTraceExceptTop() won't.
+  std::string CurrentOsStackTraceExceptTop(int skip_count) GTEST_NO_INLINE_;
+
+  // Finds and returns a TestSuite with the given name.  If one doesn't
+  // exist, creates one and returns it.
+  //
+  // Arguments:
+  //
+  //   test_suite_name: name of the test suite
+  //   type_param:     the name of the test's type parameter, or NULL if
+  //                   this is not a typed or a type-parameterized test.
+  //   set_up_tc:      pointer to the function that sets up the test suite
+  //   tear_down_tc:   pointer to the function that tears down the test suite
+  TestSuite* GetTestSuite(const char* test_suite_name, const char* type_param,
+                          internal::SetUpTestSuiteFunc set_up_tc,
+                          internal::TearDownTestSuiteFunc tear_down_tc);
+
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  TestCase* GetTestCase(const char* test_case_name, const char* type_param,
+                        internal::SetUpTestSuiteFunc set_up_tc,
+                        internal::TearDownTestSuiteFunc tear_down_tc) {
+    return GetTestSuite(test_case_name, type_param, set_up_tc, tear_down_tc);
+  }
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  // Adds a TestInfo to the unit test.
+  //
+  // Arguments:
+  //
+  //   set_up_tc:    pointer to the function that sets up the test suite
+  //   tear_down_tc: pointer to the function that tears down the test suite
+  //   test_info:    the TestInfo object
+  void AddTestInfo(internal::SetUpTestSuiteFunc set_up_tc,
+                   internal::TearDownTestSuiteFunc tear_down_tc,
+                   TestInfo* test_info) {
+    // In order to support thread-safe death tests, we need to
+    // remember the original working directory when the test program
+    // was first invoked.  We cannot do this in RUN_ALL_TESTS(), as
+    // the user may have changed the current directory before calling
+    // RUN_ALL_TESTS().  Therefore we capture the current directory in
+    // AddTestInfo(), which is called to register a TEST or TEST_F
+    // before main() is reached.
+    if (original_working_dir_.IsEmpty()) {
+      original_working_dir_.Set(FilePath::GetCurrentDir());
+      GTEST_CHECK_(!original_working_dir_.IsEmpty())
+          << "Failed to get the current working directory.";
+    }
+
+    GetTestSuite(test_info->test_suite_name(), test_info->type_param(),
+                 set_up_tc, tear_down_tc)
+        ->AddTestInfo(test_info);
+  }
+
+  // Returns ParameterizedTestSuiteRegistry object used to keep track of
+  // value-parameterized tests and instantiate and register them.
+  internal::ParameterizedTestSuiteRegistry& parameterized_test_registry() {
+    return parameterized_test_registry_;
+  }
+
+  // Sets the TestSuite object for the test that's currently running.
+  void set_current_test_suite(TestSuite* a_current_test_suite) {
+    current_test_suite_ = a_current_test_suite;
+  }
+
+  // Sets the TestInfo object for the test that's currently running.  If
+  // current_test_info is NULL, the assertion results will be stored in
+  // ad_hoc_test_result_.
+  void set_current_test_info(TestInfo* a_current_test_info) {
+    current_test_info_ = a_current_test_info;
+  }
+
+  // Registers all parameterized tests defined using TEST_P and
+  // INSTANTIATE_TEST_SUITE_P, creating regular tests for each test/parameter
+  // combination. This method can be called more then once; it has guards
+  // protecting from registering the tests more then once.  If
+  // value-parameterized tests are disabled, RegisterParameterizedTests is
+  // present but does nothing.
+  void RegisterParameterizedTests();
+
+  // Runs all tests in this UnitTest object, prints the result, and
+  // returns true if all tests are successful.  If any exception is
+  // thrown during a test, this test is considered to be failed, but
+  // the rest of the tests will still be run.
+  bool RunAllTests();
+
+  // Clears the results of all tests, except the ad hoc tests.
+  void ClearNonAdHocTestResult() {
+    ForEach(test_suites_, TestSuite::ClearTestSuiteResult);
+  }
+
+  // Clears the results of ad-hoc test assertions.
+  void ClearAdHocTestResult() {
+    ad_hoc_test_result_.Clear();
+  }
+
+  // Adds a TestProperty to the current TestResult object when invoked in a
+  // context of a test or a test suite, or to the global property set. If the
+  // result already contains a property with the same key, the value will be
+  // updated.
+  void RecordProperty(const TestProperty& test_property);
+
+  enum ReactionToSharding {
+    HONOR_SHARDING_PROTOCOL,
+    IGNORE_SHARDING_PROTOCOL
+  };
+
+  // Matches the full name of each test against the user-specified
+  // filter to decide whether the test should run, then records the
+  // result in each TestSuite and TestInfo object.
+  // If shard_tests == HONOR_SHARDING_PROTOCOL, further filters tests
+  // based on sharding variables in the environment.
+  // Returns the number of tests that should run.
+  int FilterTests(ReactionToSharding shard_tests);
+
+  // Prints the names of the tests matching the user-specified filter flag.
+  void ListTestsMatchingFilter();
+
+  const TestSuite* current_test_suite() const { return current_test_suite_; }
+  TestInfo* current_test_info() { return current_test_info_; }
+  const TestInfo* current_test_info() const { return current_test_info_; }
+
+  // Returns the vector of environments that need to be set-up/torn-down
+  // before/after the tests are run.
+  std::vector<Environment*>& environments() { return environments_; }
+
+  // Getters for the per-thread Google Test trace stack.
+  std::vector<TraceInfo>& gtest_trace_stack() {
+    return *(gtest_trace_stack_.pointer());
+  }
+  const std::vector<TraceInfo>& gtest_trace_stack() const {
+    return gtest_trace_stack_.get();
+  }
+
+#if GTEST_HAS_DEATH_TEST
+  void InitDeathTestSubprocessControlInfo() {
+    internal_run_death_test_flag_.reset(ParseInternalRunDeathTestFlag());
+  }
+  // Returns a pointer to the parsed --gtest_internal_run_death_test
+  // flag, or NULL if that flag was not specified.
+  // This information is useful only in a death test child process.
+  // Must not be called before a call to InitGoogleTest.
+  const InternalRunDeathTestFlag* internal_run_death_test_flag() const {
+    return internal_run_death_test_flag_.get();
+  }
+
+  // Returns a pointer to the current death test factory.
+  internal::DeathTestFactory* death_test_factory() {
+    return death_test_factory_.get();
+  }
+
+  void SuppressTestEventsIfInSubprocess();
+
+  friend class ReplaceDeathTestFactory;
+#endif  // GTEST_HAS_DEATH_TEST
+
+  // Initializes the event listener performing XML output as specified by
+  // UnitTestOptions. Must not be called before InitGoogleTest.
+  void ConfigureXmlOutput();
+
+#if GTEST_CAN_STREAM_RESULTS_
+  // Initializes the event listener for streaming test results to a socket.
+  // Must not be called before InitGoogleTest.
+  void ConfigureStreamingOutput();
+#endif
+
+  // Performs initialization dependent upon flag values obtained in
+  // ParseGoogleTestFlagsOnly.  Is called from InitGoogleTest after the call to
+  // ParseGoogleTestFlagsOnly.  In case a user neglects to call InitGoogleTest
+  // this function is also called from RunAllTests.  Since this function can be
+  // called more than once, it has to be idempotent.
+  void PostFlagParsingInit();
+
+  // Gets the random seed used at the start of the current test iteration.
+  int random_seed() const { return random_seed_; }
+
+  // Gets the random number generator.
+  internal::Random* random() { return &random_; }
+
+  // Shuffles all test suites, and the tests within each test suite,
+  // making sure that death tests are still run first.
+  void ShuffleTests();
+
+  // Restores the test suites and tests to their order before the first shuffle.
+  void UnshuffleTests();
+
+  // Returns the value of GTEST_FLAG(catch_exceptions) at the moment
+  // UnitTest::Run() starts.
+  bool catch_exceptions() const { return catch_exceptions_; }
+
+ private:
+  friend class ::testing::UnitTest;
+
+  // Used by UnitTest::Run() to capture the state of
+  // GTEST_FLAG(catch_exceptions) at the moment it starts.
+  void set_catch_exceptions(bool value) { catch_exceptions_ = value; }
+
+  // The UnitTest object that owns this implementation object.
+  UnitTest* const parent_;
+
+  // The working directory when the first TEST() or TEST_F() was
+  // executed.
+  internal::FilePath original_working_dir_;
+
+  // The default test part result reporters.
+  DefaultGlobalTestPartResultReporter default_global_test_part_result_reporter_;
+  DefaultPerThreadTestPartResultReporter
+      default_per_thread_test_part_result_reporter_;
+
+  // Points to (but doesn't own) the global test part result reporter.
+  TestPartResultReporterInterface* global_test_part_result_repoter_;
+
+  // Protects read and write access to global_test_part_result_reporter_.
+  internal::Mutex global_test_part_result_reporter_mutex_;
+
+  // Points to (but doesn't own) the per-thread test part result reporter.
+  internal::ThreadLocal<TestPartResultReporterInterface*>
+      per_thread_test_part_result_reporter_;
+
+  // The vector of environments that need to be set-up/torn-down
+  // before/after the tests are run.
+  std::vector<Environment*> environments_;
+
+  // The vector of TestSuites in their original order.  It owns the
+  // elements in the vector.
+  std::vector<TestSuite*> test_suites_;
+
+  // Provides a level of indirection for the test suite list to allow
+  // easy shuffling and restoring the test suite order.  The i-th
+  // element of this vector is the index of the i-th test suite in the
+  // shuffled order.
+  std::vector<int> test_suite_indices_;
+
+  // ParameterizedTestRegistry object used to register value-parameterized
+  // tests.
+  internal::ParameterizedTestSuiteRegistry parameterized_test_registry_;
+
+  // Indicates whether RegisterParameterizedTests() has been called already.
+  bool parameterized_tests_registered_;
+
+  // Index of the last death test suite registered.  Initially -1.
+  int last_death_test_suite_;
+
+  // This points to the TestSuite for the currently running test.  It
+  // changes as Google Test goes through one test suite after another.
+  // When no test is running, this is set to NULL and Google Test
+  // stores assertion results in ad_hoc_test_result_.  Initially NULL.
+  TestSuite* current_test_suite_;
+
+  // This points to the TestInfo for the currently running test.  It
+  // changes as Google Test goes through one test after another.  When
+  // no test is running, this is set to NULL and Google Test stores
+  // assertion results in ad_hoc_test_result_.  Initially NULL.
+  TestInfo* current_test_info_;
+
+  // Normally, a user only writes assertions inside a TEST or TEST_F,
+  // or inside a function called by a TEST or TEST_F.  Since Google
+  // Test keeps track of which test is current running, it can
+  // associate such an assertion with the test it belongs to.
+  //
+  // If an assertion is encountered when no TEST or TEST_F is running,
+  // Google Test attributes the assertion result to an imaginary "ad hoc"
+  // test, and records the result in ad_hoc_test_result_.
+  TestResult ad_hoc_test_result_;
+
+  // The list of event listeners that can be used to track events inside
+  // Google Test.
+  TestEventListeners listeners_;
+
+  // The OS stack trace getter.  Will be deleted when the UnitTest
+  // object is destructed.  By default, an OsStackTraceGetter is used,
+  // but the user can set this field to use a custom getter if that is
+  // desired.
+  OsStackTraceGetterInterface* os_stack_trace_getter_;
+
+  // True if and only if PostFlagParsingInit() has been called.
+  bool post_flag_parse_init_performed_;
+
+  // The random number seed used at the beginning of the test run.
+  int random_seed_;
+
+  // Our random number generator.
+  internal::Random random_;
+
+  // The time of the test program start, in ms from the start of the
+  // UNIX epoch.
+  TimeInMillis start_timestamp_;
+
+  // How long the test took to run, in milliseconds.
+  TimeInMillis elapsed_time_;
+
+#if GTEST_HAS_DEATH_TEST
+  // The decomposed components of the gtest_internal_run_death_test flag,
+  // parsed when RUN_ALL_TESTS is called.
+  std::unique_ptr<InternalRunDeathTestFlag> internal_run_death_test_flag_;
+  std::unique_ptr<internal::DeathTestFactory> death_test_factory_;
+#endif  // GTEST_HAS_DEATH_TEST
+
+  // A per-thread stack of traces created by the SCOPED_TRACE() macro.
+  internal::ThreadLocal<std::vector<TraceInfo> > gtest_trace_stack_;
+
+  // The value of GTEST_FLAG(catch_exceptions) at the moment RunAllTests()
+  // starts.
+  bool catch_exceptions_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(UnitTestImpl);
+};  // class UnitTestImpl
+
+// Convenience function for accessing the global UnitTest
+// implementation object.
+inline UnitTestImpl* GetUnitTestImpl() {
+  return UnitTest::GetInstance()->impl();
+}
+
+#if GTEST_USES_SIMPLE_RE
+
+// Internal helper functions for implementing the simple regular
+// expression matcher.
+GTEST_API_ bool IsInSet(char ch, const char* str);
+GTEST_API_ bool IsAsciiDigit(char ch);
+GTEST_API_ bool IsAsciiPunct(char ch);
+GTEST_API_ bool IsRepeat(char ch);
+GTEST_API_ bool IsAsciiWhiteSpace(char ch);
+GTEST_API_ bool IsAsciiWordChar(char ch);
+GTEST_API_ bool IsValidEscape(char ch);
+GTEST_API_ bool AtomMatchesChar(bool escaped, char pattern, char ch);
+GTEST_API_ bool ValidateRegex(const char* regex);
+GTEST_API_ bool MatchRegexAtHead(const char* regex, const char* str);
+GTEST_API_ bool MatchRepetitionAndRegexAtHead(
+    bool escaped, char ch, char repeat, const char* regex, const char* str);
+GTEST_API_ bool MatchRegexAnywhere(const char* regex, const char* str);
+
+#endif  // GTEST_USES_SIMPLE_RE
+
+// Parses the command line for Google Test flags, without initializing
+// other parts of Google Test.
+GTEST_API_ void ParseGoogleTestFlagsOnly(int* argc, char** argv);
+GTEST_API_ void ParseGoogleTestFlagsOnly(int* argc, wchar_t** argv);
+
+#if GTEST_HAS_DEATH_TEST
+
+// Returns the message describing the last system error, regardless of the
+// platform.
+GTEST_API_ std::string GetLastErrnoDescription();
+
+// Attempts to parse a string into a positive integer pointed to by the
+// number parameter.  Returns true if that is possible.
+// GTEST_HAS_DEATH_TEST implies that we have ::std::string, so we can use
+// it here.
+template <typename Integer>
+bool ParseNaturalNumber(const ::std::string& str, Integer* number) {
+  // Fail fast if the given string does not begin with a digit;
+  // this bypasses strtoXXX's "optional leading whitespace and plus
+  // or minus sign" semantics, which are undesirable here.
+  if (str.empty() || !IsDigit(str[0])) {
+    return false;
+  }
+  errno = 0;
+
+  char* end;
+  // BiggestConvertible is the largest integer type that system-provided
+  // string-to-number conversion routines can return.
+
+# if GTEST_OS_WINDOWS && !defined(__GNUC__)
+
+  // MSVC and C++ Builder define __int64 instead of the standard long long.
+  typedef unsigned __int64 BiggestConvertible;
+  const BiggestConvertible parsed = _strtoui64(str.c_str(), &end, 10);
+
+# else
+
+  typedef unsigned long long BiggestConvertible;  // NOLINT
+  const BiggestConvertible parsed = strtoull(str.c_str(), &end, 10);
+
+# endif  // GTEST_OS_WINDOWS && !defined(__GNUC__)
+
+  const bool parse_success = *end == '\0' && errno == 0;
+
+  GTEST_CHECK_(sizeof(Integer) <= sizeof(parsed));
+
+  const Integer result = static_cast<Integer>(parsed);
+  if (parse_success && static_cast<BiggestConvertible>(result) == parsed) {
+    *number = result;
+    return true;
+  }
+  return false;
+}
+#endif  // GTEST_HAS_DEATH_TEST
+
+// TestResult contains some private methods that should be hidden from
+// Google Test user but are required for testing. This class allow our tests
+// to access them.
+//
+// This class is supplied only for the purpose of testing Google Test's own
+// constructs. Do not use it in user tests, either directly or indirectly.
+class TestResultAccessor {
+ public:
+  static void RecordProperty(TestResult* test_result,
+                             const std::string& xml_element,
+                             const TestProperty& property) {
+    test_result->RecordProperty(xml_element, property);
+  }
+
+  static void ClearTestPartResults(TestResult* test_result) {
+    test_result->ClearTestPartResults();
+  }
+
+  static const std::vector<testing::TestPartResult>& test_part_results(
+      const TestResult& test_result) {
+    return test_result.test_part_results();
+  }
+};
+
+#if GTEST_CAN_STREAM_RESULTS_
+
+// Streams test results to the given port on the given host machine.
+class StreamingListener : public EmptyTestEventListener {
+ public:
+  // Abstract base class for writing strings to a socket.
+  class AbstractSocketWriter {
+   public:
+    virtual ~AbstractSocketWriter() {}
+
+    // Sends a string to the socket.
+    virtual void Send(const std::string& message) = 0;
+
+    // Closes the socket.
+    virtual void CloseConnection() {}
+
+    // Sends a string and a newline to the socket.
+    void SendLn(const std::string& message) { Send(message + "\n"); }
+  };
+
+  // Concrete class for actually writing strings to a socket.
+  class SocketWriter : public AbstractSocketWriter {
+   public:
+    SocketWriter(const std::string& host, const std::string& port)
+        : sockfd_(-1), host_name_(host), port_num_(port) {
+      MakeConnection();
+    }
+
+    ~SocketWriter() override {
+      if (sockfd_ != -1)
+        CloseConnection();
+    }
+
+    // Sends a string to the socket.
+    void Send(const std::string& message) override {
+      GTEST_CHECK_(sockfd_ != -1)
+          << "Send() can be called only when there is a connection.";
+
+      const auto len = static_cast<size_t>(message.length());
+      if (write(sockfd_, message.c_str(), len) != static_cast<ssize_t>(len)) {
+        GTEST_LOG_(WARNING)
+            << "stream_result_to: failed to stream to "
+            << host_name_ << ":" << port_num_;
+      }
+    }
+
+   private:
+    // Creates a client socket and connects to the server.
+    void MakeConnection();
+
+    // Closes the socket.
+    void CloseConnection() override {
+      GTEST_CHECK_(sockfd_ != -1)
+          << "CloseConnection() can be called only when there is a connection.";
+
+      close(sockfd_);
+      sockfd_ = -1;
+    }
+
+    int sockfd_;  // socket file descriptor
+    const std::string host_name_;
+    const std::string port_num_;
+
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(SocketWriter);
+  };  // class SocketWriter
+
+  // Escapes '=', '&', '%', and '\n' characters in str as "%xx".
+  static std::string UrlEncode(const char* str);
+
+  StreamingListener(const std::string& host, const std::string& port)
+      : socket_writer_(new SocketWriter(host, port)) {
+    Start();
+  }
+
+  explicit StreamingListener(AbstractSocketWriter* socket_writer)
+      : socket_writer_(socket_writer) { Start(); }
+
+  void OnTestProgramStart(const UnitTest& /* unit_test */) override {
+    SendLn("event=TestProgramStart");
+  }
+
+  void OnTestProgramEnd(const UnitTest& unit_test) override {
+    // Note that Google Test current only report elapsed time for each
+    // test iteration, not for the entire test program.
+    SendLn("event=TestProgramEnd&passed=" + FormatBool(unit_test.Passed()));
+
+    // Notify the streaming server to stop.
+    socket_writer_->CloseConnection();
+  }
+
+  void OnTestIterationStart(const UnitTest& /* unit_test */,
+                            int iteration) override {
+    SendLn("event=TestIterationStart&iteration=" +
+           StreamableToString(iteration));
+  }
+
+  void OnTestIterationEnd(const UnitTest& unit_test,
+                          int /* iteration */) override {
+    SendLn("event=TestIterationEnd&passed=" +
+           FormatBool(unit_test.Passed()) + "&elapsed_time=" +
+           StreamableToString(unit_test.elapsed_time()) + "ms");
+  }
+
+  // Note that "event=TestCaseStart" is a wire format and has to remain
+  // "case" for compatibilty
+  void OnTestCaseStart(const TestCase& test_case) override {
+    SendLn(std::string("event=TestCaseStart&name=") + test_case.name());
+  }
+
+  // Note that "event=TestCaseEnd" is a wire format and has to remain
+  // "case" for compatibilty
+  void OnTestCaseEnd(const TestCase& test_case) override {
+    SendLn("event=TestCaseEnd&passed=" + FormatBool(test_case.Passed()) +
+           "&elapsed_time=" + StreamableToString(test_case.elapsed_time()) +
+           "ms");
+  }
+
+  void OnTestStart(const TestInfo& test_info) override {
+    SendLn(std::string("event=TestStart&name=") + test_info.name());
+  }
+
+  void OnTestEnd(const TestInfo& test_info) override {
+    SendLn("event=TestEnd&passed=" +
+           FormatBool((test_info.result())->Passed()) +
+           "&elapsed_time=" +
+           StreamableToString((test_info.result())->elapsed_time()) + "ms");
+  }
+
+  void OnTestPartResult(const TestPartResult& test_part_result) override {
+    const char* file_name = test_part_result.file_name();
+    if (file_name == nullptr) file_name = "";
+    SendLn("event=TestPartResult&file=" + UrlEncode(file_name) +
+           "&line=" + StreamableToString(test_part_result.line_number()) +
+           "&message=" + UrlEncode(test_part_result.message()));
+  }
+
+ private:
+  // Sends the given message and a newline to the socket.
+  void SendLn(const std::string& message) { socket_writer_->SendLn(message); }
+
+  // Called at the start of streaming to notify the receiver what
+  // protocol we are using.
+  void Start() { SendLn("gtest_streaming_protocol_version=1.0"); }
+
+  std::string FormatBool(bool value) { return value ? "1" : "0"; }
+
+  const std::unique_ptr<AbstractSocketWriter> socket_writer_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamingListener);
+};  // class StreamingListener
+
+#endif  // GTEST_CAN_STREAM_RESULTS_
+
+}  // namespace internal
+}  // namespace testing
+
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
+
+#endif  // GTEST_SRC_GTEST_INTERNAL_INL_H_
diff --git a/build/_deps/googletest-src/googletest/src/gtest-matchers.cc b/build/_deps/googletest-src/googletest/src/gtest-matchers.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7d2fb6851ec4173af6dddc7ae0720e43e43ace52
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/src/gtest-matchers.cc
@@ -0,0 +1,97 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This file implements just enough of the matcher interface to allow
+// EXPECT_DEATH and friends to accept a matcher argument.
+
+#include "gtest/internal/gtest-internal.h"
+#include "gtest/internal/gtest-port.h"
+#include "gtest/gtest-matchers.h"
+
+#include <string>
+
+namespace testing {
+
+// Constructs a matcher that matches a const std::string& whose value is
+// equal to s.
+Matcher<const std::string&>::Matcher(const std::string& s) { *this = Eq(s); }
+
+// Constructs a matcher that matches a const std::string& whose value is
+// equal to s.
+Matcher<const std::string&>::Matcher(const char* s) {
+  *this = Eq(std::string(s));
+}
+
+// Constructs a matcher that matches a std::string whose value is equal to
+// s.
+Matcher<std::string>::Matcher(const std::string& s) { *this = Eq(s); }
+
+// Constructs a matcher that matches a std::string whose value is equal to
+// s.
+Matcher<std::string>::Matcher(const char* s) { *this = Eq(std::string(s)); }
+
+#if GTEST_HAS_ABSL
+// Constructs a matcher that matches a const absl::string_view& whose value is
+// equal to s.
+Matcher<const absl::string_view&>::Matcher(const std::string& s) {
+  *this = Eq(s);
+}
+
+// Constructs a matcher that matches a const absl::string_view& whose value is
+// equal to s.
+Matcher<const absl::string_view&>::Matcher(const char* s) {
+  *this = Eq(std::string(s));
+}
+
+// Constructs a matcher that matches a const absl::string_view& whose value is
+// equal to s.
+Matcher<const absl::string_view&>::Matcher(absl::string_view s) {
+  *this = Eq(std::string(s));
+}
+
+// Constructs a matcher that matches a absl::string_view whose value is equal to
+// s.
+Matcher<absl::string_view>::Matcher(const std::string& s) { *this = Eq(s); }
+
+// Constructs a matcher that matches a absl::string_view whose value is equal to
+// s.
+Matcher<absl::string_view>::Matcher(const char* s) {
+  *this = Eq(std::string(s));
+}
+
+// Constructs a matcher that matches a absl::string_view whose value is equal to
+// s.
+Matcher<absl::string_view>::Matcher(absl::string_view s) {
+  *this = Eq(std::string(s));
+}
+#endif  // GTEST_HAS_ABSL
+
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googletest/src/gtest-port.cc b/build/_deps/googletest-src/googletest/src/gtest-port.cc
new file mode 100644
index 0000000000000000000000000000000000000000..fc5ba6becc55fd2cd6bb178454a7edc56998b1ab
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/src/gtest-port.cc
@@ -0,0 +1,1399 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include "gtest/internal/gtest-port.h"
+
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fstream>
+#include <memory>
+
+#if GTEST_OS_WINDOWS
+# include <windows.h>
+# include <io.h>
+# include <sys/stat.h>
+# include <map>  // Used in ThreadLocal.
+# ifdef _MSC_VER
+#  include <crtdbg.h>
+# endif  // _MSC_VER
+#else
+# include <unistd.h>
+#endif  // GTEST_OS_WINDOWS
+
+#if GTEST_OS_MAC
+# include <mach/mach_init.h>
+# include <mach/task.h>
+# include <mach/vm_map.h>
+#endif  // GTEST_OS_MAC
+
+#if GTEST_OS_DRAGONFLY || GTEST_OS_FREEBSD || GTEST_OS_GNU_KFREEBSD || \
+    GTEST_OS_NETBSD || GTEST_OS_OPENBSD
+# include <sys/sysctl.h>
+# if GTEST_OS_DRAGONFLY || GTEST_OS_FREEBSD || GTEST_OS_GNU_KFREEBSD
+#  include <sys/user.h>
+# endif
+#endif
+
+#if GTEST_OS_QNX
+# include <devctl.h>
+# include <fcntl.h>
+# include <sys/procfs.h>
+#endif  // GTEST_OS_QNX
+
+#if GTEST_OS_AIX
+# include <procinfo.h>
+# include <sys/types.h>
+#endif  // GTEST_OS_AIX
+
+#if GTEST_OS_FUCHSIA
+# include <zircon/process.h>
+# include <zircon/syscalls.h>
+#endif  // GTEST_OS_FUCHSIA
+
+#include "gtest/gtest-spi.h"
+#include "gtest/gtest-message.h"
+#include "gtest/internal/gtest-internal.h"
+#include "gtest/internal/gtest-string.h"
+#include "src/gtest-internal-inl.h"
+
+namespace testing {
+namespace internal {
+
+#if defined(_MSC_VER) || defined(__BORLANDC__)
+// MSVC and C++Builder do not provide a definition of STDERR_FILENO.
+const int kStdOutFileno = 1;
+const int kStdErrFileno = 2;
+#else
+const int kStdOutFileno = STDOUT_FILENO;
+const int kStdErrFileno = STDERR_FILENO;
+#endif  // _MSC_VER
+
+#if GTEST_OS_LINUX
+
+namespace {
+template <typename T>
+T ReadProcFileField(const std::string& filename, int field) {
+  std::string dummy;
+  std::ifstream file(filename.c_str());
+  while (field-- > 0) {
+    file >> dummy;
+  }
+  T output = 0;
+  file >> output;
+  return output;
+}
+}  // namespace
+
+// Returns the number of active threads, or 0 when there is an error.
+size_t GetThreadCount() {
+  const std::string filename =
+      (Message() << "/proc/" << getpid() << "/stat").GetString();
+  return ReadProcFileField<size_t>(filename, 19);
+}
+
+#elif GTEST_OS_MAC
+
+size_t GetThreadCount() {
+  const task_t task = mach_task_self();
+  mach_msg_type_number_t thread_count;
+  thread_act_array_t thread_list;
+  const kern_return_t status = task_threads(task, &thread_list, &thread_count);
+  if (status == KERN_SUCCESS) {
+    // task_threads allocates resources in thread_list and we need to free them
+    // to avoid leaks.
+    vm_deallocate(task,
+                  reinterpret_cast<vm_address_t>(thread_list),
+                  sizeof(thread_t) * thread_count);
+    return static_cast<size_t>(thread_count);
+  } else {
+    return 0;
+  }
+}
+
+#elif GTEST_OS_DRAGONFLY || GTEST_OS_FREEBSD || GTEST_OS_GNU_KFREEBSD || \
+      GTEST_OS_NETBSD
+
+#if GTEST_OS_NETBSD
+#undef KERN_PROC
+#define KERN_PROC KERN_PROC2
+#define kinfo_proc kinfo_proc2
+#endif
+
+#if GTEST_OS_DRAGONFLY
+#define KP_NLWP(kp) (kp.kp_nthreads)
+#elif GTEST_OS_FREEBSD || GTEST_OS_GNU_KFREEBSD
+#define KP_NLWP(kp) (kp.ki_numthreads)
+#elif GTEST_OS_NETBSD
+#define KP_NLWP(kp) (kp.p_nlwps)
+#endif
+
+// Returns the number of threads running in the process, or 0 to indicate that
+// we cannot detect it.
+size_t GetThreadCount() {
+  int mib[] = {
+    CTL_KERN,
+    KERN_PROC,
+    KERN_PROC_PID,
+    getpid(),
+#if GTEST_OS_NETBSD
+    sizeof(struct kinfo_proc),
+    1,
+#endif
+  };
+  u_int miblen = sizeof(mib) / sizeof(mib[0]);
+  struct kinfo_proc info;
+  size_t size = sizeof(info);
+  if (sysctl(mib, miblen, &info, &size, NULL, 0)) {
+    return 0;
+  }
+  return static_cast<size_t>(KP_NLWP(info));
+}
+#elif GTEST_OS_OPENBSD
+
+// Returns the number of threads running in the process, or 0 to indicate that
+// we cannot detect it.
+size_t GetThreadCount() {
+  int mib[] = {
+    CTL_KERN,
+    KERN_PROC,
+    KERN_PROC_PID | KERN_PROC_SHOW_THREADS,
+    getpid(),
+    sizeof(struct kinfo_proc),
+    0,
+  };
+  u_int miblen = sizeof(mib) / sizeof(mib[0]);
+
+  // get number of structs
+  size_t size;
+  if (sysctl(mib, miblen, NULL, &size, NULL, 0)) {
+    return 0;
+  }
+  mib[5] = size / mib[4];
+
+  // populate array of structs
+  struct kinfo_proc info[mib[5]];
+  if (sysctl(mib, miblen, &info, &size, NULL, 0)) {
+    return 0;
+  }
+
+  // exclude empty members
+  int nthreads = 0;
+  for (int i = 0; i < size / mib[4]; i++) {
+    if (info[i].p_tid != -1)
+      nthreads++;
+  }
+  return nthreads;
+}
+
+#elif GTEST_OS_QNX
+
+// Returns the number of threads running in the process, or 0 to indicate that
+// we cannot detect it.
+size_t GetThreadCount() {
+  const int fd = open("/proc/self/as", O_RDONLY);
+  if (fd < 0) {
+    return 0;
+  }
+  procfs_info process_info;
+  const int status =
+      devctl(fd, DCMD_PROC_INFO, &process_info, sizeof(process_info), nullptr);
+  close(fd);
+  if (status == EOK) {
+    return static_cast<size_t>(process_info.num_threads);
+  } else {
+    return 0;
+  }
+}
+
+#elif GTEST_OS_AIX
+
+size_t GetThreadCount() {
+  struct procentry64 entry;
+  pid_t pid = getpid();
+  int status = getprocs64(&entry, sizeof(entry), nullptr, 0, &pid, 1);
+  if (status == 1) {
+    return entry.pi_thcount;
+  } else {
+    return 0;
+  }
+}
+
+#elif GTEST_OS_FUCHSIA
+
+size_t GetThreadCount() {
+  int dummy_buffer;
+  size_t avail;
+  zx_status_t status = zx_object_get_info(
+      zx_process_self(),
+      ZX_INFO_PROCESS_THREADS,
+      &dummy_buffer,
+      0,
+      nullptr,
+      &avail);
+  if (status == ZX_OK) {
+    return avail;
+  } else {
+    return 0;
+  }
+}
+
+#else
+
+size_t GetThreadCount() {
+  // There's no portable way to detect the number of threads, so we just
+  // return 0 to indicate that we cannot detect it.
+  return 0;
+}
+
+#endif  // GTEST_OS_LINUX
+
+#if GTEST_IS_THREADSAFE && GTEST_OS_WINDOWS
+
+void SleepMilliseconds(int n) {
+  ::Sleep(static_cast<DWORD>(n));
+}
+
+AutoHandle::AutoHandle()
+    : handle_(INVALID_HANDLE_VALUE) {}
+
+AutoHandle::AutoHandle(Handle handle)
+    : handle_(handle) {}
+
+AutoHandle::~AutoHandle() {
+  Reset();
+}
+
+AutoHandle::Handle AutoHandle::Get() const {
+  return handle_;
+}
+
+void AutoHandle::Reset() {
+  Reset(INVALID_HANDLE_VALUE);
+}
+
+void AutoHandle::Reset(HANDLE handle) {
+  // Resetting with the same handle we already own is invalid.
+  if (handle_ != handle) {
+    if (IsCloseable()) {
+      ::CloseHandle(handle_);
+    }
+    handle_ = handle;
+  } else {
+    GTEST_CHECK_(!IsCloseable())
+        << "Resetting a valid handle to itself is likely a programmer error "
+            "and thus not allowed.";
+  }
+}
+
+bool AutoHandle::IsCloseable() const {
+  // Different Windows APIs may use either of these values to represent an
+  // invalid handle.
+  return handle_ != nullptr && handle_ != INVALID_HANDLE_VALUE;
+}
+
+Notification::Notification()
+    : event_(::CreateEvent(nullptr,     // Default security attributes.
+                           TRUE,        // Do not reset automatically.
+                           FALSE,       // Initially unset.
+                           nullptr)) {  // Anonymous event.
+  GTEST_CHECK_(event_.Get() != nullptr);
+}
+
+void Notification::Notify() {
+  GTEST_CHECK_(::SetEvent(event_.Get()) != FALSE);
+}
+
+void Notification::WaitForNotification() {
+  GTEST_CHECK_(
+      ::WaitForSingleObject(event_.Get(), INFINITE) == WAIT_OBJECT_0);
+}
+
+Mutex::Mutex()
+    : owner_thread_id_(0),
+      type_(kDynamic),
+      critical_section_init_phase_(0),
+      critical_section_(new CRITICAL_SECTION) {
+  ::InitializeCriticalSection(critical_section_);
+}
+
+Mutex::~Mutex() {
+  // Static mutexes are leaked intentionally. It is not thread-safe to try
+  // to clean them up.
+  if (type_ == kDynamic) {
+    ::DeleteCriticalSection(critical_section_);
+    delete critical_section_;
+    critical_section_ = nullptr;
+  }
+}
+
+void Mutex::Lock() {
+  ThreadSafeLazyInit();
+  ::EnterCriticalSection(critical_section_);
+  owner_thread_id_ = ::GetCurrentThreadId();
+}
+
+void Mutex::Unlock() {
+  ThreadSafeLazyInit();
+  // We don't protect writing to owner_thread_id_ here, as it's the
+  // caller's responsibility to ensure that the current thread holds the
+  // mutex when this is called.
+  owner_thread_id_ = 0;
+  ::LeaveCriticalSection(critical_section_);
+}
+
+// Does nothing if the current thread holds the mutex. Otherwise, crashes
+// with high probability.
+void Mutex::AssertHeld() {
+  ThreadSafeLazyInit();
+  GTEST_CHECK_(owner_thread_id_ == ::GetCurrentThreadId())
+      << "The current thread is not holding the mutex @" << this;
+}
+
+namespace {
+
+#ifdef _MSC_VER
+// Use the RAII idiom to flag mem allocs that are intentionally never
+// deallocated. The motivation is to silence the false positive mem leaks
+// that are reported by the debug version of MS's CRT which can only detect
+// if an alloc is missing a matching deallocation.
+// Example:
+//    MemoryIsNotDeallocated memory_is_not_deallocated;
+//    critical_section_ = new CRITICAL_SECTION;
+//
+class MemoryIsNotDeallocated
+{
+ public:
+  MemoryIsNotDeallocated() : old_crtdbg_flag_(0) {
+    old_crtdbg_flag_ = _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG);
+    // Set heap allocation block type to _IGNORE_BLOCK so that MS debug CRT
+    // doesn't report mem leak if there's no matching deallocation.
+    _CrtSetDbgFlag(old_crtdbg_flag_ & ~_CRTDBG_ALLOC_MEM_DF);
+  }
+
+  ~MemoryIsNotDeallocated() {
+    // Restore the original _CRTDBG_ALLOC_MEM_DF flag
+    _CrtSetDbgFlag(old_crtdbg_flag_);
+  }
+
+ private:
+  int old_crtdbg_flag_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(MemoryIsNotDeallocated);
+};
+#endif  // _MSC_VER
+
+}  // namespace
+
+// Initializes owner_thread_id_ and critical_section_ in static mutexes.
+void Mutex::ThreadSafeLazyInit() {
+  // Dynamic mutexes are initialized in the constructor.
+  if (type_ == kStatic) {
+    switch (
+        ::InterlockedCompareExchange(&critical_section_init_phase_, 1L, 0L)) {
+      case 0:
+        // If critical_section_init_phase_ was 0 before the exchange, we
+        // are the first to test it and need to perform the initialization.
+        owner_thread_id_ = 0;
+        {
+          // Use RAII to flag that following mem alloc is never deallocated.
+#ifdef _MSC_VER
+          MemoryIsNotDeallocated memory_is_not_deallocated;
+#endif  // _MSC_VER
+          critical_section_ = new CRITICAL_SECTION;
+        }
+        ::InitializeCriticalSection(critical_section_);
+        // Updates the critical_section_init_phase_ to 2 to signal
+        // initialization complete.
+        GTEST_CHECK_(::InterlockedCompareExchange(
+                          &critical_section_init_phase_, 2L, 1L) ==
+                      1L);
+        break;
+      case 1:
+        // Somebody else is already initializing the mutex; spin until they
+        // are done.
+        while (::InterlockedCompareExchange(&critical_section_init_phase_,
+                                            2L,
+                                            2L) != 2L) {
+          // Possibly yields the rest of the thread's time slice to other
+          // threads.
+          ::Sleep(0);
+        }
+        break;
+
+      case 2:
+        break;  // The mutex is already initialized and ready for use.
+
+      default:
+        GTEST_CHECK_(false)
+            << "Unexpected value of critical_section_init_phase_ "
+            << "while initializing a static mutex.";
+    }
+  }
+}
+
+namespace {
+
+class ThreadWithParamSupport : public ThreadWithParamBase {
+ public:
+  static HANDLE CreateThread(Runnable* runnable,
+                             Notification* thread_can_start) {
+    ThreadMainParam* param = new ThreadMainParam(runnable, thread_can_start);
+    DWORD thread_id;
+    HANDLE thread_handle = ::CreateThread(
+        nullptr,  // Default security.
+        0,        // Default stack size.
+        &ThreadWithParamSupport::ThreadMain,
+        param,        // Parameter to ThreadMainStatic
+        0x0,          // Default creation flags.
+        &thread_id);  // Need a valid pointer for the call to work under Win98.
+    GTEST_CHECK_(thread_handle != nullptr)
+        << "CreateThread failed with error " << ::GetLastError() << ".";
+    if (thread_handle == nullptr) {
+      delete param;
+    }
+    return thread_handle;
+  }
+
+ private:
+  struct ThreadMainParam {
+    ThreadMainParam(Runnable* runnable, Notification* thread_can_start)
+        : runnable_(runnable),
+          thread_can_start_(thread_can_start) {
+    }
+    std::unique_ptr<Runnable> runnable_;
+    // Does not own.
+    Notification* thread_can_start_;
+  };
+
+  static DWORD WINAPI ThreadMain(void* ptr) {
+    // Transfers ownership.
+    std::unique_ptr<ThreadMainParam> param(static_cast<ThreadMainParam*>(ptr));
+    if (param->thread_can_start_ != nullptr)
+      param->thread_can_start_->WaitForNotification();
+    param->runnable_->Run();
+    return 0;
+  }
+
+  // Prohibit instantiation.
+  ThreadWithParamSupport();
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParamSupport);
+};
+
+}  // namespace
+
+ThreadWithParamBase::ThreadWithParamBase(Runnable *runnable,
+                                         Notification* thread_can_start)
+      : thread_(ThreadWithParamSupport::CreateThread(runnable,
+                                                     thread_can_start)) {
+}
+
+ThreadWithParamBase::~ThreadWithParamBase() {
+  Join();
+}
+
+void ThreadWithParamBase::Join() {
+  GTEST_CHECK_(::WaitForSingleObject(thread_.Get(), INFINITE) == WAIT_OBJECT_0)
+      << "Failed to join the thread with error " << ::GetLastError() << ".";
+}
+
+// Maps a thread to a set of ThreadIdToThreadLocals that have values
+// instantiated on that thread and notifies them when the thread exits.  A
+// ThreadLocal instance is expected to persist until all threads it has
+// values on have terminated.
+class ThreadLocalRegistryImpl {
+ public:
+  // Registers thread_local_instance as having value on the current thread.
+  // Returns a value that can be used to identify the thread from other threads.
+  static ThreadLocalValueHolderBase* GetValueOnCurrentThread(
+      const ThreadLocalBase* thread_local_instance) {
+    DWORD current_thread = ::GetCurrentThreadId();
+    MutexLock lock(&mutex_);
+    ThreadIdToThreadLocals* const thread_to_thread_locals =
+        GetThreadLocalsMapLocked();
+    ThreadIdToThreadLocals::iterator thread_local_pos =
+        thread_to_thread_locals->find(current_thread);
+    if (thread_local_pos == thread_to_thread_locals->end()) {
+      thread_local_pos = thread_to_thread_locals->insert(
+          std::make_pair(current_thread, ThreadLocalValues())).first;
+      StartWatcherThreadFor(current_thread);
+    }
+    ThreadLocalValues& thread_local_values = thread_local_pos->second;
+    ThreadLocalValues::iterator value_pos =
+        thread_local_values.find(thread_local_instance);
+    if (value_pos == thread_local_values.end()) {
+      value_pos =
+          thread_local_values
+              .insert(std::make_pair(
+                  thread_local_instance,
+                  std::shared_ptr<ThreadLocalValueHolderBase>(
+                      thread_local_instance->NewValueForCurrentThread())))
+              .first;
+    }
+    return value_pos->second.get();
+  }
+
+  static void OnThreadLocalDestroyed(
+      const ThreadLocalBase* thread_local_instance) {
+    std::vector<std::shared_ptr<ThreadLocalValueHolderBase> > value_holders;
+    // Clean up the ThreadLocalValues data structure while holding the lock, but
+    // defer the destruction of the ThreadLocalValueHolderBases.
+    {
+      MutexLock lock(&mutex_);
+      ThreadIdToThreadLocals* const thread_to_thread_locals =
+          GetThreadLocalsMapLocked();
+      for (ThreadIdToThreadLocals::iterator it =
+          thread_to_thread_locals->begin();
+          it != thread_to_thread_locals->end();
+          ++it) {
+        ThreadLocalValues& thread_local_values = it->second;
+        ThreadLocalValues::iterator value_pos =
+            thread_local_values.find(thread_local_instance);
+        if (value_pos != thread_local_values.end()) {
+          value_holders.push_back(value_pos->second);
+          thread_local_values.erase(value_pos);
+          // This 'if' can only be successful at most once, so theoretically we
+          // could break out of the loop here, but we don't bother doing so.
+        }
+      }
+    }
+    // Outside the lock, let the destructor for 'value_holders' deallocate the
+    // ThreadLocalValueHolderBases.
+  }
+
+  static void OnThreadExit(DWORD thread_id) {
+    GTEST_CHECK_(thread_id != 0) << ::GetLastError();
+    std::vector<std::shared_ptr<ThreadLocalValueHolderBase> > value_holders;
+    // Clean up the ThreadIdToThreadLocals data structure while holding the
+    // lock, but defer the destruction of the ThreadLocalValueHolderBases.
+    {
+      MutexLock lock(&mutex_);
+      ThreadIdToThreadLocals* const thread_to_thread_locals =
+          GetThreadLocalsMapLocked();
+      ThreadIdToThreadLocals::iterator thread_local_pos =
+          thread_to_thread_locals->find(thread_id);
+      if (thread_local_pos != thread_to_thread_locals->end()) {
+        ThreadLocalValues& thread_local_values = thread_local_pos->second;
+        for (ThreadLocalValues::iterator value_pos =
+            thread_local_values.begin();
+            value_pos != thread_local_values.end();
+            ++value_pos) {
+          value_holders.push_back(value_pos->second);
+        }
+        thread_to_thread_locals->erase(thread_local_pos);
+      }
+    }
+    // Outside the lock, let the destructor for 'value_holders' deallocate the
+    // ThreadLocalValueHolderBases.
+  }
+
+ private:
+  // In a particular thread, maps a ThreadLocal object to its value.
+  typedef std::map<const ThreadLocalBase*,
+                   std::shared_ptr<ThreadLocalValueHolderBase> >
+      ThreadLocalValues;
+  // Stores all ThreadIdToThreadLocals having values in a thread, indexed by
+  // thread's ID.
+  typedef std::map<DWORD, ThreadLocalValues> ThreadIdToThreadLocals;
+
+  // Holds the thread id and thread handle that we pass from
+  // StartWatcherThreadFor to WatcherThreadFunc.
+  typedef std::pair<DWORD, HANDLE> ThreadIdAndHandle;
+
+  static void StartWatcherThreadFor(DWORD thread_id) {
+    // The returned handle will be kept in thread_map and closed by
+    // watcher_thread in WatcherThreadFunc.
+    HANDLE thread = ::OpenThread(SYNCHRONIZE | THREAD_QUERY_INFORMATION,
+                                 FALSE,
+                                 thread_id);
+    GTEST_CHECK_(thread != nullptr);
+    // We need to pass a valid thread ID pointer into CreateThread for it
+    // to work correctly under Win98.
+    DWORD watcher_thread_id;
+    HANDLE watcher_thread = ::CreateThread(
+        nullptr,  // Default security.
+        0,        // Default stack size
+        &ThreadLocalRegistryImpl::WatcherThreadFunc,
+        reinterpret_cast<LPVOID>(new ThreadIdAndHandle(thread_id, thread)),
+        CREATE_SUSPENDED, &watcher_thread_id);
+    GTEST_CHECK_(watcher_thread != nullptr);
+    // Give the watcher thread the same priority as ours to avoid being
+    // blocked by it.
+    ::SetThreadPriority(watcher_thread,
+                        ::GetThreadPriority(::GetCurrentThread()));
+    ::ResumeThread(watcher_thread);
+    ::CloseHandle(watcher_thread);
+  }
+
+  // Monitors exit from a given thread and notifies those
+  // ThreadIdToThreadLocals about thread termination.
+  static DWORD WINAPI WatcherThreadFunc(LPVOID param) {
+    const ThreadIdAndHandle* tah =
+        reinterpret_cast<const ThreadIdAndHandle*>(param);
+    GTEST_CHECK_(
+        ::WaitForSingleObject(tah->second, INFINITE) == WAIT_OBJECT_0);
+    OnThreadExit(tah->first);
+    ::CloseHandle(tah->second);
+    delete tah;
+    return 0;
+  }
+
+  // Returns map of thread local instances.
+  static ThreadIdToThreadLocals* GetThreadLocalsMapLocked() {
+    mutex_.AssertHeld();
+#ifdef _MSC_VER
+    MemoryIsNotDeallocated memory_is_not_deallocated;
+#endif  // _MSC_VER
+    static ThreadIdToThreadLocals* map = new ThreadIdToThreadLocals();
+    return map;
+  }
+
+  // Protects access to GetThreadLocalsMapLocked() and its return value.
+  static Mutex mutex_;
+  // Protects access to GetThreadMapLocked() and its return value.
+  static Mutex thread_map_mutex_;
+};
+
+Mutex ThreadLocalRegistryImpl::mutex_(Mutex::kStaticMutex);
+Mutex ThreadLocalRegistryImpl::thread_map_mutex_(Mutex::kStaticMutex);
+
+ThreadLocalValueHolderBase* ThreadLocalRegistry::GetValueOnCurrentThread(
+      const ThreadLocalBase* thread_local_instance) {
+  return ThreadLocalRegistryImpl::GetValueOnCurrentThread(
+      thread_local_instance);
+}
+
+void ThreadLocalRegistry::OnThreadLocalDestroyed(
+      const ThreadLocalBase* thread_local_instance) {
+  ThreadLocalRegistryImpl::OnThreadLocalDestroyed(thread_local_instance);
+}
+
+#endif  // GTEST_IS_THREADSAFE && GTEST_OS_WINDOWS
+
+#if GTEST_USES_POSIX_RE
+
+// Implements RE.  Currently only needed for death tests.
+
+RE::~RE() {
+  if (is_valid_) {
+    // regfree'ing an invalid regex might crash because the content
+    // of the regex is undefined. Since the regex's are essentially
+    // the same, one cannot be valid (or invalid) without the other
+    // being so too.
+    regfree(&partial_regex_);
+    regfree(&full_regex_);
+  }
+  free(const_cast<char*>(pattern_));
+}
+
+// Returns true if and only if regular expression re matches the entire str.
+bool RE::FullMatch(const char* str, const RE& re) {
+  if (!re.is_valid_) return false;
+
+  regmatch_t match;
+  return regexec(&re.full_regex_, str, 1, &match, 0) == 0;
+}
+
+// Returns true if and only if regular expression re matches a substring of
+// str (including str itself).
+bool RE::PartialMatch(const char* str, const RE& re) {
+  if (!re.is_valid_) return false;
+
+  regmatch_t match;
+  return regexec(&re.partial_regex_, str, 1, &match, 0) == 0;
+}
+
+// Initializes an RE from its string representation.
+void RE::Init(const char* regex) {
+  pattern_ = posix::StrDup(regex);
+
+  // Reserves enough bytes to hold the regular expression used for a
+  // full match.
+  const size_t full_regex_len = strlen(regex) + 10;
+  char* const full_pattern = new char[full_regex_len];
+
+  snprintf(full_pattern, full_regex_len, "^(%s)$", regex);
+  is_valid_ = regcomp(&full_regex_, full_pattern, REG_EXTENDED) == 0;
+  // We want to call regcomp(&partial_regex_, ...) even if the
+  // previous expression returns false.  Otherwise partial_regex_ may
+  // not be properly initialized can may cause trouble when it's
+  // freed.
+  //
+  // Some implementation of POSIX regex (e.g. on at least some
+  // versions of Cygwin) doesn't accept the empty string as a valid
+  // regex.  We change it to an equivalent form "()" to be safe.
+  if (is_valid_) {
+    const char* const partial_regex = (*regex == '\0') ? "()" : regex;
+    is_valid_ = regcomp(&partial_regex_, partial_regex, REG_EXTENDED) == 0;
+  }
+  EXPECT_TRUE(is_valid_)
+      << "Regular expression \"" << regex
+      << "\" is not a valid POSIX Extended regular expression.";
+
+  delete[] full_pattern;
+}
+
+#elif GTEST_USES_SIMPLE_RE
+
+// Returns true if and only if ch appears anywhere in str (excluding the
+// terminating '\0' character).
+bool IsInSet(char ch, const char* str) {
+  return ch != '\0' && strchr(str, ch) != nullptr;
+}
+
+// Returns true if and only if ch belongs to the given classification.
+// Unlike similar functions in <ctype.h>, these aren't affected by the
+// current locale.
+bool IsAsciiDigit(char ch) { return '0' <= ch && ch <= '9'; }
+bool IsAsciiPunct(char ch) {
+  return IsInSet(ch, "^-!\"#$%&'()*+,./:;<=>?@[\\]_`{|}~");
+}
+bool IsRepeat(char ch) { return IsInSet(ch, "?*+"); }
+bool IsAsciiWhiteSpace(char ch) { return IsInSet(ch, " \f\n\r\t\v"); }
+bool IsAsciiWordChar(char ch) {
+  return ('a' <= ch && ch <= 'z') || ('A' <= ch && ch <= 'Z') ||
+      ('0' <= ch && ch <= '9') || ch == '_';
+}
+
+// Returns true if and only if "\\c" is a supported escape sequence.
+bool IsValidEscape(char c) {
+  return (IsAsciiPunct(c) || IsInSet(c, "dDfnrsStvwW"));
+}
+
+// Returns true if and only if the given atom (specified by escaped and
+// pattern) matches ch.  The result is undefined if the atom is invalid.
+bool AtomMatchesChar(bool escaped, char pattern_char, char ch) {
+  if (escaped) {  // "\\p" where p is pattern_char.
+    switch (pattern_char) {
+      case 'd': return IsAsciiDigit(ch);
+      case 'D': return !IsAsciiDigit(ch);
+      case 'f': return ch == '\f';
+      case 'n': return ch == '\n';
+      case 'r': return ch == '\r';
+      case 's': return IsAsciiWhiteSpace(ch);
+      case 'S': return !IsAsciiWhiteSpace(ch);
+      case 't': return ch == '\t';
+      case 'v': return ch == '\v';
+      case 'w': return IsAsciiWordChar(ch);
+      case 'W': return !IsAsciiWordChar(ch);
+    }
+    return IsAsciiPunct(pattern_char) && pattern_char == ch;
+  }
+
+  return (pattern_char == '.' && ch != '\n') || pattern_char == ch;
+}
+
+// Helper function used by ValidateRegex() to format error messages.
+static std::string FormatRegexSyntaxError(const char* regex, int index) {
+  return (Message() << "Syntax error at index " << index
+          << " in simple regular expression \"" << regex << "\": ").GetString();
+}
+
+// Generates non-fatal failures and returns false if regex is invalid;
+// otherwise returns true.
+bool ValidateRegex(const char* regex) {
+  if (regex == nullptr) {
+    ADD_FAILURE() << "NULL is not a valid simple regular expression.";
+    return false;
+  }
+
+  bool is_valid = true;
+
+  // True if and only if ?, *, or + can follow the previous atom.
+  bool prev_repeatable = false;
+  for (int i = 0; regex[i]; i++) {
+    if (regex[i] == '\\') {  // An escape sequence
+      i++;
+      if (regex[i] == '\0') {
+        ADD_FAILURE() << FormatRegexSyntaxError(regex, i - 1)
+                      << "'\\' cannot appear at the end.";
+        return false;
+      }
+
+      if (!IsValidEscape(regex[i])) {
+        ADD_FAILURE() << FormatRegexSyntaxError(regex, i - 1)
+                      << "invalid escape sequence \"\\" << regex[i] << "\".";
+        is_valid = false;
+      }
+      prev_repeatable = true;
+    } else {  // Not an escape sequence.
+      const char ch = regex[i];
+
+      if (ch == '^' && i > 0) {
+        ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
+                      << "'^' can only appear at the beginning.";
+        is_valid = false;
+      } else if (ch == '$' && regex[i + 1] != '\0') {
+        ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
+                      << "'$' can only appear at the end.";
+        is_valid = false;
+      } else if (IsInSet(ch, "()[]{}|")) {
+        ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
+                      << "'" << ch << "' is unsupported.";
+        is_valid = false;
+      } else if (IsRepeat(ch) && !prev_repeatable) {
+        ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
+                      << "'" << ch << "' can only follow a repeatable token.";
+        is_valid = false;
+      }
+
+      prev_repeatable = !IsInSet(ch, "^$?*+");
+    }
+  }
+
+  return is_valid;
+}
+
+// Matches a repeated regex atom followed by a valid simple regular
+// expression.  The regex atom is defined as c if escaped is false,
+// or \c otherwise.  repeat is the repetition meta character (?, *,
+// or +).  The behavior is undefined if str contains too many
+// characters to be indexable by size_t, in which case the test will
+// probably time out anyway.  We are fine with this limitation as
+// std::string has it too.
+bool MatchRepetitionAndRegexAtHead(
+    bool escaped, char c, char repeat, const char* regex,
+    const char* str) {
+  const size_t min_count = (repeat == '+') ? 1 : 0;
+  const size_t max_count = (repeat == '?') ? 1 :
+      static_cast<size_t>(-1) - 1;
+  // We cannot call numeric_limits::max() as it conflicts with the
+  // max() macro on Windows.
+
+  for (size_t i = 0; i <= max_count; ++i) {
+    // We know that the atom matches each of the first i characters in str.
+    if (i >= min_count && MatchRegexAtHead(regex, str + i)) {
+      // We have enough matches at the head, and the tail matches too.
+      // Since we only care about *whether* the pattern matches str
+      // (as opposed to *how* it matches), there is no need to find a
+      // greedy match.
+      return true;
+    }
+    if (str[i] == '\0' || !AtomMatchesChar(escaped, c, str[i]))
+      return false;
+  }
+  return false;
+}
+
+// Returns true if and only if regex matches a prefix of str. regex must
+// be a valid simple regular expression and not start with "^", or the
+// result is undefined.
+bool MatchRegexAtHead(const char* regex, const char* str) {
+  if (*regex == '\0')  // An empty regex matches a prefix of anything.
+    return true;
+
+  // "$" only matches the end of a string.  Note that regex being
+  // valid guarantees that there's nothing after "$" in it.
+  if (*regex == '$')
+    return *str == '\0';
+
+  // Is the first thing in regex an escape sequence?
+  const bool escaped = *regex == '\\';
+  if (escaped)
+    ++regex;
+  if (IsRepeat(regex[1])) {
+    // MatchRepetitionAndRegexAtHead() calls MatchRegexAtHead(), so
+    // here's an indirect recursion.  It terminates as the regex gets
+    // shorter in each recursion.
+    return MatchRepetitionAndRegexAtHead(
+        escaped, regex[0], regex[1], regex + 2, str);
+  } else {
+    // regex isn't empty, isn't "$", and doesn't start with a
+    // repetition.  We match the first atom of regex with the first
+    // character of str and recurse.
+    return (*str != '\0') && AtomMatchesChar(escaped, *regex, *str) &&
+        MatchRegexAtHead(regex + 1, str + 1);
+  }
+}
+
+// Returns true if and only if regex matches any substring of str.  regex must
+// be a valid simple regular expression, or the result is undefined.
+//
+// The algorithm is recursive, but the recursion depth doesn't exceed
+// the regex length, so we won't need to worry about running out of
+// stack space normally.  In rare cases the time complexity can be
+// exponential with respect to the regex length + the string length,
+// but usually it's must faster (often close to linear).
+bool MatchRegexAnywhere(const char* regex, const char* str) {
+  if (regex == nullptr || str == nullptr) return false;
+
+  if (*regex == '^')
+    return MatchRegexAtHead(regex + 1, str);
+
+  // A successful match can be anywhere in str.
+  do {
+    if (MatchRegexAtHead(regex, str))
+      return true;
+  } while (*str++ != '\0');
+  return false;
+}
+
+// Implements the RE class.
+
+RE::~RE() {
+  free(const_cast<char*>(pattern_));
+  free(const_cast<char*>(full_pattern_));
+}
+
+// Returns true if and only if regular expression re matches the entire str.
+bool RE::FullMatch(const char* str, const RE& re) {
+  return re.is_valid_ && MatchRegexAnywhere(re.full_pattern_, str);
+}
+
+// Returns true if and only if regular expression re matches a substring of
+// str (including str itself).
+bool RE::PartialMatch(const char* str, const RE& re) {
+  return re.is_valid_ && MatchRegexAnywhere(re.pattern_, str);
+}
+
+// Initializes an RE from its string representation.
+void RE::Init(const char* regex) {
+  pattern_ = full_pattern_ = nullptr;
+  if (regex != nullptr) {
+    pattern_ = posix::StrDup(regex);
+  }
+
+  is_valid_ = ValidateRegex(regex);
+  if (!is_valid_) {
+    // No need to calculate the full pattern when the regex is invalid.
+    return;
+  }
+
+  const size_t len = strlen(regex);
+  // Reserves enough bytes to hold the regular expression used for a
+  // full match: we need space to prepend a '^', append a '$', and
+  // terminate the string with '\0'.
+  char* buffer = static_cast<char*>(malloc(len + 3));
+  full_pattern_ = buffer;
+
+  if (*regex != '^')
+    *buffer++ = '^';  // Makes sure full_pattern_ starts with '^'.
+
+  // We don't use snprintf or strncpy, as they trigger a warning when
+  // compiled with VC++ 8.0.
+  memcpy(buffer, regex, len);
+  buffer += len;
+
+  if (len == 0 || regex[len - 1] != '$')
+    *buffer++ = '$';  // Makes sure full_pattern_ ends with '$'.
+
+  *buffer = '\0';
+}
+
+#endif  // GTEST_USES_POSIX_RE
+
+const char kUnknownFile[] = "unknown file";
+
+// Formats a source file path and a line number as they would appear
+// in an error message from the compiler used to compile this code.
+GTEST_API_ ::std::string FormatFileLocation(const char* file, int line) {
+  const std::string file_name(file == nullptr ? kUnknownFile : file);
+
+  if (line < 0) {
+    return file_name + ":";
+  }
+#ifdef _MSC_VER
+  return file_name + "(" + StreamableToString(line) + "):";
+#else
+  return file_name + ":" + StreamableToString(line) + ":";
+#endif  // _MSC_VER
+}
+
+// Formats a file location for compiler-independent XML output.
+// Although this function is not platform dependent, we put it next to
+// FormatFileLocation in order to contrast the two functions.
+// Note that FormatCompilerIndependentFileLocation() does NOT append colon
+// to the file location it produces, unlike FormatFileLocation().
+GTEST_API_ ::std::string FormatCompilerIndependentFileLocation(
+    const char* file, int line) {
+  const std::string file_name(file == nullptr ? kUnknownFile : file);
+
+  if (line < 0)
+    return file_name;
+  else
+    return file_name + ":" + StreamableToString(line);
+}
+
+GTestLog::GTestLog(GTestLogSeverity severity, const char* file, int line)
+    : severity_(severity) {
+  const char* const marker =
+      severity == GTEST_INFO ?    "[  INFO ]" :
+      severity == GTEST_WARNING ? "[WARNING]" :
+      severity == GTEST_ERROR ?   "[ ERROR ]" : "[ FATAL ]";
+  GetStream() << ::std::endl << marker << " "
+              << FormatFileLocation(file, line).c_str() << ": ";
+}
+
+// Flushes the buffers and, if severity is GTEST_FATAL, aborts the program.
+GTestLog::~GTestLog() {
+  GetStream() << ::std::endl;
+  if (severity_ == GTEST_FATAL) {
+    fflush(stderr);
+    posix::Abort();
+  }
+}
+
+// Disable Microsoft deprecation warnings for POSIX functions called from
+// this class (creat, dup, dup2, and close)
+GTEST_DISABLE_MSC_DEPRECATED_PUSH_()
+
+#if GTEST_HAS_STREAM_REDIRECTION
+
+// Object that captures an output stream (stdout/stderr).
+class CapturedStream {
+ public:
+  // The ctor redirects the stream to a temporary file.
+  explicit CapturedStream(int fd) : fd_(fd), uncaptured_fd_(dup(fd)) {
+# if GTEST_OS_WINDOWS
+    char temp_dir_path[MAX_PATH + 1] = { '\0' };  // NOLINT
+    char temp_file_path[MAX_PATH + 1] = { '\0' };  // NOLINT
+
+    ::GetTempPathA(sizeof(temp_dir_path), temp_dir_path);
+    const UINT success = ::GetTempFileNameA(temp_dir_path,
+                                            "gtest_redir",
+                                            0,  // Generate unique file name.
+                                            temp_file_path);
+    GTEST_CHECK_(success != 0)
+        << "Unable to create a temporary file in " << temp_dir_path;
+    const int captured_fd = creat(temp_file_path, _S_IREAD | _S_IWRITE);
+    GTEST_CHECK_(captured_fd != -1) << "Unable to open temporary file "
+                                    << temp_file_path;
+    filename_ = temp_file_path;
+# else
+    // There's no guarantee that a test has write access to the current
+    // directory, so we create the temporary file in the /tmp directory
+    // instead. We use /tmp on most systems, and /sdcard on Android.
+    // That's because Android doesn't have /tmp.
+#  if GTEST_OS_LINUX_ANDROID
+    // Note: Android applications are expected to call the framework's
+    // Context.getExternalStorageDirectory() method through JNI to get
+    // the location of the world-writable SD Card directory. However,
+    // this requires a Context handle, which cannot be retrieved
+    // globally from native code. Doing so also precludes running the
+    // code as part of a regular standalone executable, which doesn't
+    // run in a Dalvik process (e.g. when running it through 'adb shell').
+    //
+    // The location /data/local/tmp is directly accessible from native code.
+    // '/sdcard' and other variants cannot be relied on, as they are not
+    // guaranteed to be mounted, or may have a delay in mounting.
+    char name_template[] = "/data/local/tmp/gtest_captured_stream.XXXXXX";
+#  else
+    char name_template[] = "/tmp/captured_stream.XXXXXX";
+#  endif  // GTEST_OS_LINUX_ANDROID
+    const int captured_fd = mkstemp(name_template);
+    if (captured_fd == -1) {
+      GTEST_LOG_(WARNING)
+          << "Failed to create tmp file " << name_template
+          << " for test; does the test have access to the /tmp directory?";
+    }
+    filename_ = name_template;
+# endif  // GTEST_OS_WINDOWS
+    fflush(nullptr);
+    dup2(captured_fd, fd_);
+    close(captured_fd);
+  }
+
+  ~CapturedStream() {
+    remove(filename_.c_str());
+  }
+
+  std::string GetCapturedString() {
+    if (uncaptured_fd_ != -1) {
+      // Restores the original stream.
+      fflush(nullptr);
+      dup2(uncaptured_fd_, fd_);
+      close(uncaptured_fd_);
+      uncaptured_fd_ = -1;
+    }
+
+    FILE* const file = posix::FOpen(filename_.c_str(), "r");
+    if (file == nullptr) {
+      GTEST_LOG_(FATAL) << "Failed to open tmp file " << filename_
+                        << " for capturing stream.";
+    }
+    const std::string content = ReadEntireFile(file);
+    posix::FClose(file);
+    return content;
+  }
+
+ private:
+  const int fd_;  // A stream to capture.
+  int uncaptured_fd_;
+  // Name of the temporary file holding the stderr output.
+  ::std::string filename_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(CapturedStream);
+};
+
+GTEST_DISABLE_MSC_DEPRECATED_POP_()
+
+static CapturedStream* g_captured_stderr = nullptr;
+static CapturedStream* g_captured_stdout = nullptr;
+
+// Starts capturing an output stream (stdout/stderr).
+static void CaptureStream(int fd, const char* stream_name,
+                          CapturedStream** stream) {
+  if (*stream != nullptr) {
+    GTEST_LOG_(FATAL) << "Only one " << stream_name
+                      << " capturer can exist at a time.";
+  }
+  *stream = new CapturedStream(fd);
+}
+
+// Stops capturing the output stream and returns the captured string.
+static std::string GetCapturedStream(CapturedStream** captured_stream) {
+  const std::string content = (*captured_stream)->GetCapturedString();
+
+  delete *captured_stream;
+  *captured_stream = nullptr;
+
+  return content;
+}
+
+// Starts capturing stdout.
+void CaptureStdout() {
+  CaptureStream(kStdOutFileno, "stdout", &g_captured_stdout);
+}
+
+// Starts capturing stderr.
+void CaptureStderr() {
+  CaptureStream(kStdErrFileno, "stderr", &g_captured_stderr);
+}
+
+// Stops capturing stdout and returns the captured string.
+std::string GetCapturedStdout() {
+  return GetCapturedStream(&g_captured_stdout);
+}
+
+// Stops capturing stderr and returns the captured string.
+std::string GetCapturedStderr() {
+  return GetCapturedStream(&g_captured_stderr);
+}
+
+#endif  // GTEST_HAS_STREAM_REDIRECTION
+
+
+
+
+
+size_t GetFileSize(FILE* file) {
+  fseek(file, 0, SEEK_END);
+  return static_cast<size_t>(ftell(file));
+}
+
+std::string ReadEntireFile(FILE* file) {
+  const size_t file_size = GetFileSize(file);
+  char* const buffer = new char[file_size];
+
+  size_t bytes_last_read = 0;  // # of bytes read in the last fread()
+  size_t bytes_read = 0;       // # of bytes read so far
+
+  fseek(file, 0, SEEK_SET);
+
+  // Keeps reading the file until we cannot read further or the
+  // pre-determined file size is reached.
+  do {
+    bytes_last_read = fread(buffer+bytes_read, 1, file_size-bytes_read, file);
+    bytes_read += bytes_last_read;
+  } while (bytes_last_read > 0 && bytes_read < file_size);
+
+  const std::string content(buffer, bytes_read);
+  delete[] buffer;
+
+  return content;
+}
+
+#if GTEST_HAS_DEATH_TEST
+static const std::vector<std::string>* g_injected_test_argvs =
+    nullptr;  // Owned.
+
+std::vector<std::string> GetInjectableArgvs() {
+  if (g_injected_test_argvs != nullptr) {
+    return *g_injected_test_argvs;
+  }
+  return GetArgvs();
+}
+
+void SetInjectableArgvs(const std::vector<std::string>* new_argvs) {
+  if (g_injected_test_argvs != new_argvs) delete g_injected_test_argvs;
+  g_injected_test_argvs = new_argvs;
+}
+
+void SetInjectableArgvs(const std::vector<std::string>& new_argvs) {
+  SetInjectableArgvs(
+      new std::vector<std::string>(new_argvs.begin(), new_argvs.end()));
+}
+
+void ClearInjectableArgvs() {
+  delete g_injected_test_argvs;
+  g_injected_test_argvs = nullptr;
+}
+#endif  // GTEST_HAS_DEATH_TEST
+
+#if GTEST_OS_WINDOWS_MOBILE
+namespace posix {
+void Abort() {
+  DebugBreak();
+  TerminateProcess(GetCurrentProcess(), 1);
+}
+}  // namespace posix
+#endif  // GTEST_OS_WINDOWS_MOBILE
+
+// Returns the name of the environment variable corresponding to the
+// given flag.  For example, FlagToEnvVar("foo") will return
+// "GTEST_FOO" in the open-source version.
+static std::string FlagToEnvVar(const char* flag) {
+  const std::string full_flag =
+      (Message() << GTEST_FLAG_PREFIX_ << flag).GetString();
+
+  Message env_var;
+  for (size_t i = 0; i != full_flag.length(); i++) {
+    env_var << ToUpper(full_flag.c_str()[i]);
+  }
+
+  return env_var.GetString();
+}
+
+// Parses 'str' for a 32-bit signed integer.  If successful, writes
+// the result to *value and returns true; otherwise leaves *value
+// unchanged and returns false.
+bool ParseInt32(const Message& src_text, const char* str, Int32* value) {
+  // Parses the environment variable as a decimal integer.
+  char* end = nullptr;
+  const long long_value = strtol(str, &end, 10);  // NOLINT
+
+  // Has strtol() consumed all characters in the string?
+  if (*end != '\0') {
+    // No - an invalid character was encountered.
+    Message msg;
+    msg << "WARNING: " << src_text
+        << " is expected to be a 32-bit integer, but actually"
+        << " has value \"" << str << "\".\n";
+    printf("%s", msg.GetString().c_str());
+    fflush(stdout);
+    return false;
+  }
+
+  // Is the parsed value in the range of an Int32?
+  const Int32 result = static_cast<Int32>(long_value);
+  if (long_value == LONG_MAX || long_value == LONG_MIN ||
+      // The parsed value overflows as a long.  (strtol() returns
+      // LONG_MAX or LONG_MIN when the input overflows.)
+      result != long_value
+      // The parsed value overflows as an Int32.
+      ) {
+    Message msg;
+    msg << "WARNING: " << src_text
+        << " is expected to be a 32-bit integer, but actually"
+        << " has value " << str << ", which overflows.\n";
+    printf("%s", msg.GetString().c_str());
+    fflush(stdout);
+    return false;
+  }
+
+  *value = result;
+  return true;
+}
+
+// Reads and returns the Boolean environment variable corresponding to
+// the given flag; if it's not set, returns default_value.
+//
+// The value is considered true if and only if it's not "0".
+bool BoolFromGTestEnv(const char* flag, bool default_value) {
+#if defined(GTEST_GET_BOOL_FROM_ENV_)
+  return GTEST_GET_BOOL_FROM_ENV_(flag, default_value);
+#else
+  const std::string env_var = FlagToEnvVar(flag);
+  const char* const string_value = posix::GetEnv(env_var.c_str());
+  return string_value == nullptr ? default_value
+                                 : strcmp(string_value, "0") != 0;
+#endif  // defined(GTEST_GET_BOOL_FROM_ENV_)
+}
+
+// Reads and returns a 32-bit integer stored in the environment
+// variable corresponding to the given flag; if it isn't set or
+// doesn't represent a valid 32-bit integer, returns default_value.
+Int32 Int32FromGTestEnv(const char* flag, Int32 default_value) {
+#if defined(GTEST_GET_INT32_FROM_ENV_)
+  return GTEST_GET_INT32_FROM_ENV_(flag, default_value);
+#else
+  const std::string env_var = FlagToEnvVar(flag);
+  const char* const string_value = posix::GetEnv(env_var.c_str());
+  if (string_value == nullptr) {
+    // The environment variable is not set.
+    return default_value;
+  }
+
+  Int32 result = default_value;
+  if (!ParseInt32(Message() << "Environment variable " << env_var,
+                  string_value, &result)) {
+    printf("The default value %s is used.\n",
+           (Message() << default_value).GetString().c_str());
+    fflush(stdout);
+    return default_value;
+  }
+
+  return result;
+#endif  // defined(GTEST_GET_INT32_FROM_ENV_)
+}
+
+// As a special case for the 'output' flag, if GTEST_OUTPUT is not
+// set, we look for XML_OUTPUT_FILE, which is set by the Bazel build
+// system.  The value of XML_OUTPUT_FILE is a filename without the
+// "xml:" prefix of GTEST_OUTPUT.
+// Note that this is meant to be called at the call site so it does
+// not check that the flag is 'output'
+// In essence this checks an env variable called XML_OUTPUT_FILE
+// and if it is set we prepend "xml:" to its value, if it not set we return ""
+std::string OutputFlagAlsoCheckEnvVar(){
+  std::string default_value_for_output_flag = "";
+  const char* xml_output_file_env = posix::GetEnv("XML_OUTPUT_FILE");
+  if (nullptr != xml_output_file_env) {
+    default_value_for_output_flag = std::string("xml:") + xml_output_file_env;
+  }
+  return default_value_for_output_flag;
+}
+
+// Reads and returns the string environment variable corresponding to
+// the given flag; if it's not set, returns default_value.
+const char* StringFromGTestEnv(const char* flag, const char* default_value) {
+#if defined(GTEST_GET_STRING_FROM_ENV_)
+  return GTEST_GET_STRING_FROM_ENV_(flag, default_value);
+#else
+  const std::string env_var = FlagToEnvVar(flag);
+  const char* const value = posix::GetEnv(env_var.c_str());
+  return value == nullptr ? default_value : value;
+#endif  // defined(GTEST_GET_STRING_FROM_ENV_)
+}
+
+}  // namespace internal
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googletest/src/gtest-printers.cc b/build/_deps/googletest-src/googletest/src/gtest-printers.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3337be312ea400ff78c78766ec4a5ba229b0206d
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/src/gtest-printers.cc
@@ -0,0 +1,442 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Test - The Google C++ Testing and Mocking Framework
+//
+// This file implements a universal value printer that can print a
+// value of any type T:
+//
+//   void ::testing::internal::UniversalPrinter<T>::Print(value, ostream_ptr);
+//
+// It uses the << operator when possible, and prints the bytes in the
+// object otherwise.  A user can override its behavior for a class
+// type Foo by defining either operator<<(::std::ostream&, const Foo&)
+// or void PrintTo(const Foo&, ::std::ostream*) in the namespace that
+// defines Foo.
+
+#include "gtest/gtest-printers.h"
+#include <stdio.h>
+#include <cctype>
+#include <cwchar>
+#include <ostream>  // NOLINT
+#include <string>
+#include "gtest/internal/gtest-port.h"
+#include "src/gtest-internal-inl.h"
+
+namespace testing {
+
+namespace {
+
+using ::std::ostream;
+
+// Prints a segment of bytes in the given object.
+GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_
+GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
+GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
+GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_
+void PrintByteSegmentInObjectTo(const unsigned char* obj_bytes, size_t start,
+                                size_t count, ostream* os) {
+  char text[5] = "";
+  for (size_t i = 0; i != count; i++) {
+    const size_t j = start + i;
+    if (i != 0) {
+      // Organizes the bytes into groups of 2 for easy parsing by
+      // human.
+      if ((j % 2) == 0)
+        *os << ' ';
+      else
+        *os << '-';
+    }
+    GTEST_SNPRINTF_(text, sizeof(text), "%02X", obj_bytes[j]);
+    *os << text;
+  }
+}
+
+// Prints the bytes in the given value to the given ostream.
+void PrintBytesInObjectToImpl(const unsigned char* obj_bytes, size_t count,
+                              ostream* os) {
+  // Tells the user how big the object is.
+  *os << count << "-byte object <";
+
+  const size_t kThreshold = 132;
+  const size_t kChunkSize = 64;
+  // If the object size is bigger than kThreshold, we'll have to omit
+  // some details by printing only the first and the last kChunkSize
+  // bytes.
+  if (count < kThreshold) {
+    PrintByteSegmentInObjectTo(obj_bytes, 0, count, os);
+  } else {
+    PrintByteSegmentInObjectTo(obj_bytes, 0, kChunkSize, os);
+    *os << " ... ";
+    // Rounds up to 2-byte boundary.
+    const size_t resume_pos = (count - kChunkSize + 1)/2*2;
+    PrintByteSegmentInObjectTo(obj_bytes, resume_pos, count - resume_pos, os);
+  }
+  *os << ">";
+}
+
+}  // namespace
+
+namespace internal2 {
+
+// Delegates to PrintBytesInObjectToImpl() to print the bytes in the
+// given object.  The delegation simplifies the implementation, which
+// uses the << operator and thus is easier done outside of the
+// ::testing::internal namespace, which contains a << operator that
+// sometimes conflicts with the one in STL.
+void PrintBytesInObjectTo(const unsigned char* obj_bytes, size_t count,
+                          ostream* os) {
+  PrintBytesInObjectToImpl(obj_bytes, count, os);
+}
+
+}  // namespace internal2
+
+namespace internal {
+
+// Depending on the value of a char (or wchar_t), we print it in one
+// of three formats:
+//   - as is if it's a printable ASCII (e.g. 'a', '2', ' '),
+//   - as a hexadecimal escape sequence (e.g. '\x7F'), or
+//   - as a special escape sequence (e.g. '\r', '\n').
+enum CharFormat {
+  kAsIs,
+  kHexEscape,
+  kSpecialEscape
+};
+
+// Returns true if c is a printable ASCII character.  We test the
+// value of c directly instead of calling isprint(), which is buggy on
+// Windows Mobile.
+inline bool IsPrintableAscii(wchar_t c) {
+  return 0x20 <= c && c <= 0x7E;
+}
+
+// Prints a wide or narrow char c as a character literal without the
+// quotes, escaping it when necessary; returns how c was formatted.
+// The template argument UnsignedChar is the unsigned version of Char,
+// which is the type of c.
+template <typename UnsignedChar, typename Char>
+static CharFormat PrintAsCharLiteralTo(Char c, ostream* os) {
+  wchar_t w_c = static_cast<wchar_t>(c);
+  switch (w_c) {
+    case L'\0':
+      *os << "\\0";
+      break;
+    case L'\'':
+      *os << "\\'";
+      break;
+    case L'\\':
+      *os << "\\\\";
+      break;
+    case L'\a':
+      *os << "\\a";
+      break;
+    case L'\b':
+      *os << "\\b";
+      break;
+    case L'\f':
+      *os << "\\f";
+      break;
+    case L'\n':
+      *os << "\\n";
+      break;
+    case L'\r':
+      *os << "\\r";
+      break;
+    case L'\t':
+      *os << "\\t";
+      break;
+    case L'\v':
+      *os << "\\v";
+      break;
+    default:
+      if (IsPrintableAscii(w_c)) {
+        *os << static_cast<char>(c);
+        return kAsIs;
+      } else {
+        ostream::fmtflags flags = os->flags();
+        *os << "\\x" << std::hex << std::uppercase
+            << static_cast<int>(static_cast<UnsignedChar>(c));
+        os->flags(flags);
+        return kHexEscape;
+      }
+  }
+  return kSpecialEscape;
+}
+
+// Prints a wchar_t c as if it's part of a string literal, escaping it when
+// necessary; returns how c was formatted.
+static CharFormat PrintAsStringLiteralTo(wchar_t c, ostream* os) {
+  switch (c) {
+    case L'\'':
+      *os << "'";
+      return kAsIs;
+    case L'"':
+      *os << "\\\"";
+      return kSpecialEscape;
+    default:
+      return PrintAsCharLiteralTo<wchar_t>(c, os);
+  }
+}
+
+// Prints a char c as if it's part of a string literal, escaping it when
+// necessary; returns how c was formatted.
+static CharFormat PrintAsStringLiteralTo(char c, ostream* os) {
+  return PrintAsStringLiteralTo(
+      static_cast<wchar_t>(static_cast<unsigned char>(c)), os);
+}
+
+// Prints a wide or narrow character c and its code.  '\0' is printed
+// as "'\\0'", other unprintable characters are also properly escaped
+// using the standard C++ escape sequence.  The template argument
+// UnsignedChar is the unsigned version of Char, which is the type of c.
+template <typename UnsignedChar, typename Char>
+void PrintCharAndCodeTo(Char c, ostream* os) {
+  // First, print c as a literal in the most readable form we can find.
+  *os << ((sizeof(c) > 1) ? "L'" : "'");
+  const CharFormat format = PrintAsCharLiteralTo<UnsignedChar>(c, os);
+  *os << "'";
+
+  // To aid user debugging, we also print c's code in decimal, unless
+  // it's 0 (in which case c was printed as '\\0', making the code
+  // obvious).
+  if (c == 0)
+    return;
+  *os << " (" << static_cast<int>(c);
+
+  // For more convenience, we print c's code again in hexadecimal,
+  // unless c was already printed in the form '\x##' or the code is in
+  // [1, 9].
+  if (format == kHexEscape || (1 <= c && c <= 9)) {
+    // Do nothing.
+  } else {
+    *os << ", 0x" << String::FormatHexInt(static_cast<int>(c));
+  }
+  *os << ")";
+}
+
+void PrintTo(unsigned char c, ::std::ostream* os) {
+  PrintCharAndCodeTo<unsigned char>(c, os);
+}
+void PrintTo(signed char c, ::std::ostream* os) {
+  PrintCharAndCodeTo<unsigned char>(c, os);
+}
+
+// Prints a wchar_t as a symbol if it is printable or as its internal
+// code otherwise and also as its code.  L'\0' is printed as "L'\\0'".
+void PrintTo(wchar_t wc, ostream* os) {
+  PrintCharAndCodeTo<wchar_t>(wc, os);
+}
+
+// Prints the given array of characters to the ostream.  CharType must be either
+// char or wchar_t.
+// The array starts at begin, the length is len, it may include '\0' characters
+// and may not be NUL-terminated.
+template <typename CharType>
+GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_
+GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
+GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
+GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_
+static CharFormat PrintCharsAsStringTo(
+    const CharType* begin, size_t len, ostream* os) {
+  const char* const kQuoteBegin = sizeof(CharType) == 1 ? "\"" : "L\"";
+  *os << kQuoteBegin;
+  bool is_previous_hex = false;
+  CharFormat print_format = kAsIs;
+  for (size_t index = 0; index < len; ++index) {
+    const CharType cur = begin[index];
+    if (is_previous_hex && IsXDigit(cur)) {
+      // Previous character is of '\x..' form and this character can be
+      // interpreted as another hexadecimal digit in its number. Break string to
+      // disambiguate.
+      *os << "\" " << kQuoteBegin;
+    }
+    is_previous_hex = PrintAsStringLiteralTo(cur, os) == kHexEscape;
+    // Remember if any characters required hex escaping.
+    if (is_previous_hex) {
+      print_format = kHexEscape;
+    }
+  }
+  *os << "\"";
+  return print_format;
+}
+
+// Prints a (const) char/wchar_t array of 'len' elements, starting at address
+// 'begin'.  CharType must be either char or wchar_t.
+template <typename CharType>
+GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_
+GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
+GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
+GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_
+static void UniversalPrintCharArray(
+    const CharType* begin, size_t len, ostream* os) {
+  // The code
+  //   const char kFoo[] = "foo";
+  // generates an array of 4, not 3, elements, with the last one being '\0'.
+  //
+  // Therefore when printing a char array, we don't print the last element if
+  // it's '\0', such that the output matches the string literal as it's
+  // written in the source code.
+  if (len > 0 && begin[len - 1] == '\0') {
+    PrintCharsAsStringTo(begin, len - 1, os);
+    return;
+  }
+
+  // If, however, the last element in the array is not '\0', e.g.
+  //    const char kFoo[] = { 'f', 'o', 'o' };
+  // we must print the entire array.  We also print a message to indicate
+  // that the array is not NUL-terminated.
+  PrintCharsAsStringTo(begin, len, os);
+  *os << " (no terminating NUL)";
+}
+
+// Prints a (const) char array of 'len' elements, starting at address 'begin'.
+void UniversalPrintArray(const char* begin, size_t len, ostream* os) {
+  UniversalPrintCharArray(begin, len, os);
+}
+
+// Prints a (const) wchar_t array of 'len' elements, starting at address
+// 'begin'.
+void UniversalPrintArray(const wchar_t* begin, size_t len, ostream* os) {
+  UniversalPrintCharArray(begin, len, os);
+}
+
+// Prints the given C string to the ostream.
+void PrintTo(const char* s, ostream* os) {
+  if (s == nullptr) {
+    *os << "NULL";
+  } else {
+    *os << ImplicitCast_<const void*>(s) << " pointing to ";
+    PrintCharsAsStringTo(s, strlen(s), os);
+  }
+}
+
+// MSVC compiler can be configured to define whar_t as a typedef
+// of unsigned short. Defining an overload for const wchar_t* in that case
+// would cause pointers to unsigned shorts be printed as wide strings,
+// possibly accessing more memory than intended and causing invalid
+// memory accesses. MSVC defines _NATIVE_WCHAR_T_DEFINED symbol when
+// wchar_t is implemented as a native type.
+#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED)
+// Prints the given wide C string to the ostream.
+void PrintTo(const wchar_t* s, ostream* os) {
+  if (s == nullptr) {
+    *os << "NULL";
+  } else {
+    *os << ImplicitCast_<const void*>(s) << " pointing to ";
+    PrintCharsAsStringTo(s, wcslen(s), os);
+  }
+}
+#endif  // wchar_t is native
+
+namespace {
+
+bool ContainsUnprintableControlCodes(const char* str, size_t length) {
+  const unsigned char *s = reinterpret_cast<const unsigned char *>(str);
+
+  for (size_t i = 0; i < length; i++) {
+    unsigned char ch = *s++;
+    if (std::iscntrl(ch)) {
+        switch (ch) {
+        case '\t':
+        case '\n':
+        case '\r':
+          break;
+        default:
+          return true;
+        }
+      }
+  }
+  return false;
+}
+
+bool IsUTF8TrailByte(unsigned char t) { return 0x80 <= t && t<= 0xbf; }
+
+bool IsValidUTF8(const char* str, size_t length) {
+  const unsigned char *s = reinterpret_cast<const unsigned char *>(str);
+
+  for (size_t i = 0; i < length;) {
+    unsigned char lead = s[i++];
+
+    if (lead <= 0x7f) {
+      continue;  // single-byte character (ASCII) 0..7F
+    }
+    if (lead < 0xc2) {
+      return false;  // trail byte or non-shortest form
+    } else if (lead <= 0xdf && (i + 1) <= length && IsUTF8TrailByte(s[i])) {
+      ++i;  // 2-byte character
+    } else if (0xe0 <= lead && lead <= 0xef && (i + 2) <= length &&
+               IsUTF8TrailByte(s[i]) &&
+               IsUTF8TrailByte(s[i + 1]) &&
+               // check for non-shortest form and surrogate
+               (lead != 0xe0 || s[i] >= 0xa0) &&
+               (lead != 0xed || s[i] < 0xa0)) {
+      i += 2;  // 3-byte character
+    } else if (0xf0 <= lead && lead <= 0xf4 && (i + 3) <= length &&
+               IsUTF8TrailByte(s[i]) &&
+               IsUTF8TrailByte(s[i + 1]) &&
+               IsUTF8TrailByte(s[i + 2]) &&
+               // check for non-shortest form
+               (lead != 0xf0 || s[i] >= 0x90) &&
+               (lead != 0xf4 || s[i] < 0x90)) {
+      i += 3;  // 4-byte character
+    } else {
+      return false;
+    }
+  }
+  return true;
+}
+
+void ConditionalPrintAsText(const char* str, size_t length, ostream* os) {
+  if (!ContainsUnprintableControlCodes(str, length) &&
+      IsValidUTF8(str, length)) {
+    *os << "\n    As Text: \"" << str << "\"";
+  }
+}
+
+}  // anonymous namespace
+
+void PrintStringTo(const ::std::string& s, ostream* os) {
+  if (PrintCharsAsStringTo(s.data(), s.size(), os) == kHexEscape) {
+    if (GTEST_FLAG(print_utf8)) {
+      ConditionalPrintAsText(s.data(), s.size(), os);
+    }
+  }
+}
+
+#if GTEST_HAS_STD_WSTRING
+void PrintWideStringTo(const ::std::wstring& s, ostream* os) {
+  PrintCharsAsStringTo(s.data(), s.size(), os);
+}
+#endif  // GTEST_HAS_STD_WSTRING
+
+}  // namespace internal
+
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googletest/src/gtest-test-part.cc b/build/_deps/googletest-src/googletest/src/gtest-test-part.cc
new file mode 100644
index 0000000000000000000000000000000000000000..178317a6bcdbd0f60a0db2317104e90ad0678713
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/src/gtest-test-part.cc
@@ -0,0 +1,104 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// The Google C++ Testing and Mocking Framework (Google Test)
+
+#include "gtest/gtest-test-part.h"
+#include "src/gtest-internal-inl.h"
+
+namespace testing {
+
+using internal::GetUnitTestImpl;
+
+// Gets the summary of the failure message by omitting the stack trace
+// in it.
+std::string TestPartResult::ExtractSummary(const char* message) {
+  const char* const stack_trace = strstr(message, internal::kStackTraceMarker);
+  return stack_trace == nullptr ? message : std::string(message, stack_trace);
+}
+
+// Prints a TestPartResult object.
+std::ostream& operator<<(std::ostream& os, const TestPartResult& result) {
+  return os << result.file_name() << ":" << result.line_number() << ": "
+            << (result.type() == TestPartResult::kSuccess
+                    ? "Success"
+                    : result.type() == TestPartResult::kSkip
+                          ? "Skipped"
+                          : result.type() == TestPartResult::kFatalFailure
+                                ? "Fatal failure"
+                                : "Non-fatal failure")
+            << ":\n"
+            << result.message() << std::endl;
+}
+
+// Appends a TestPartResult to the array.
+void TestPartResultArray::Append(const TestPartResult& result) {
+  array_.push_back(result);
+}
+
+// Returns the TestPartResult at the given index (0-based).
+const TestPartResult& TestPartResultArray::GetTestPartResult(int index) const {
+  if (index < 0 || index >= size()) {
+    printf("\nInvalid index (%d) into TestPartResultArray.\n", index);
+    internal::posix::Abort();
+  }
+
+  return array_[static_cast<size_t>(index)];
+}
+
+// Returns the number of TestPartResult objects in the array.
+int TestPartResultArray::size() const {
+  return static_cast<int>(array_.size());
+}
+
+namespace internal {
+
+HasNewFatalFailureHelper::HasNewFatalFailureHelper()
+    : has_new_fatal_failure_(false),
+      original_reporter_(GetUnitTestImpl()->
+                         GetTestPartResultReporterForCurrentThread()) {
+  GetUnitTestImpl()->SetTestPartResultReporterForCurrentThread(this);
+}
+
+HasNewFatalFailureHelper::~HasNewFatalFailureHelper() {
+  GetUnitTestImpl()->SetTestPartResultReporterForCurrentThread(
+      original_reporter_);
+}
+
+void HasNewFatalFailureHelper::ReportTestPartResult(
+    const TestPartResult& result) {
+  if (result.fatally_failed())
+    has_new_fatal_failure_ = true;
+  original_reporter_->ReportTestPartResult(result);
+}
+
+}  // namespace internal
+
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googletest/src/gtest-typed-test.cc b/build/_deps/googletest-src/googletest/src/gtest-typed-test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8677caf732b4239408313ac3ef98ba0474ba3665
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/src/gtest-typed-test.cc
@@ -0,0 +1,118 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include "gtest/gtest-typed-test.h"
+
+#include "gtest/gtest.h"
+
+namespace testing {
+namespace internal {
+
+#if GTEST_HAS_TYPED_TEST_P
+
+// Skips to the first non-space char in str. Returns an empty string if str
+// contains only whitespace characters.
+static const char* SkipSpaces(const char* str) {
+  while (IsSpace(*str))
+    str++;
+  return str;
+}
+
+static std::vector<std::string> SplitIntoTestNames(const char* src) {
+  std::vector<std::string> name_vec;
+  src = SkipSpaces(src);
+  for (; src != nullptr; src = SkipComma(src)) {
+    name_vec.push_back(StripTrailingSpaces(GetPrefixUntilComma(src)));
+  }
+  return name_vec;
+}
+
+// Verifies that registered_tests match the test names in
+// registered_tests_; returns registered_tests if successful, or
+// aborts the program otherwise.
+const char* TypedTestSuitePState::VerifyRegisteredTestNames(
+    const char* file, int line, const char* registered_tests) {
+  typedef RegisteredTestsMap::const_iterator RegisteredTestIter;
+  registered_ = true;
+
+  std::vector<std::string> name_vec = SplitIntoTestNames(registered_tests);
+
+  Message errors;
+
+  std::set<std::string> tests;
+  for (std::vector<std::string>::const_iterator name_it = name_vec.begin();
+       name_it != name_vec.end(); ++name_it) {
+    const std::string& name = *name_it;
+    if (tests.count(name) != 0) {
+      errors << "Test " << name << " is listed more than once.\n";
+      continue;
+    }
+
+    bool found = false;
+    for (RegisteredTestIter it = registered_tests_.begin();
+         it != registered_tests_.end();
+         ++it) {
+      if (name == it->first) {
+        found = true;
+        break;
+      }
+    }
+
+    if (found) {
+      tests.insert(name);
+    } else {
+      errors << "No test named " << name
+             << " can be found in this test suite.\n";
+    }
+  }
+
+  for (RegisteredTestIter it = registered_tests_.begin();
+       it != registered_tests_.end();
+       ++it) {
+    if (tests.count(it->first) == 0) {
+      errors << "You forgot to list test " << it->first << ".\n";
+    }
+  }
+
+  const std::string& errors_str = errors.GetString();
+  if (errors_str != "") {
+    fprintf(stderr, "%s %s", FormatFileLocation(file, line).c_str(),
+            errors_str.c_str());
+    fflush(stderr);
+    posix::Abort();
+  }
+
+  return registered_tests;
+}
+
+#endif  // GTEST_HAS_TYPED_TEST_P
+
+}  // namespace internal
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googletest/src/gtest.cc b/build/_deps/googletest-src/googletest/src/gtest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a5b4e5ac78ca1f00259d1ec5bfa7c3feaeee55ea
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/src/gtest.cc
@@ -0,0 +1,6177 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// The Google C++ Testing and Mocking Framework (Google Test)
+
+#include "gtest/gtest.h"
+#include "gtest/internal/custom/gtest.h"
+#include "gtest/gtest-spi.h"
+
+#include <ctype.h>
+#include <math.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <wchar.h>
+#include <wctype.h>
+
+#include <algorithm>
+#include <iomanip>
+#include <limits>
+#include <list>
+#include <map>
+#include <ostream>  // NOLINT
+#include <sstream>
+#include <vector>
+
+#if GTEST_OS_LINUX
+
+# define GTEST_HAS_GETTIMEOFDAY_ 1
+
+# include <fcntl.h>  // NOLINT
+# include <limits.h>  // NOLINT
+# include <sched.h>  // NOLINT
+// Declares vsnprintf().  This header is not available on Windows.
+# include <strings.h>  // NOLINT
+# include <sys/mman.h>  // NOLINT
+# include <sys/time.h>  // NOLINT
+# include <unistd.h>  // NOLINT
+# include <string>
+
+#elif GTEST_OS_ZOS
+# define GTEST_HAS_GETTIMEOFDAY_ 1
+# include <sys/time.h>  // NOLINT
+
+// On z/OS we additionally need strings.h for strcasecmp.
+# include <strings.h>  // NOLINT
+
+#elif GTEST_OS_WINDOWS_MOBILE  // We are on Windows CE.
+
+# include <windows.h>  // NOLINT
+# undef min
+
+#elif GTEST_OS_WINDOWS  // We are on Windows proper.
+
+# include <windows.h>  // NOLINT
+# undef min
+
+# include <crtdbg.h>  // NOLINT
+# include <debugapi.h>  // NOLINT
+# include <io.h>  // NOLINT
+# include <sys/timeb.h>  // NOLINT
+# include <sys/types.h>  // NOLINT
+# include <sys/stat.h>  // NOLINT
+
+# if GTEST_OS_WINDOWS_MINGW
+// MinGW has gettimeofday() but not _ftime64().
+#  define GTEST_HAS_GETTIMEOFDAY_ 1
+#  include <sys/time.h>  // NOLINT
+# endif  // GTEST_OS_WINDOWS_MINGW
+
+#else
+
+// Assume other platforms have gettimeofday().
+# define GTEST_HAS_GETTIMEOFDAY_ 1
+
+// cpplint thinks that the header is already included, so we want to
+// silence it.
+# include <sys/time.h>  // NOLINT
+# include <unistd.h>  // NOLINT
+
+#endif  // GTEST_OS_LINUX
+
+#if GTEST_HAS_EXCEPTIONS
+# include <stdexcept>
+#endif
+
+#if GTEST_CAN_STREAM_RESULTS_
+# include <arpa/inet.h>  // NOLINT
+# include <netdb.h>  // NOLINT
+# include <sys/socket.h>  // NOLINT
+# include <sys/types.h>  // NOLINT
+#endif
+
+#include "src/gtest-internal-inl.h"
+
+#if GTEST_OS_WINDOWS
+# define vsnprintf _vsnprintf
+#endif  // GTEST_OS_WINDOWS
+
+#if GTEST_OS_MAC
+#ifndef GTEST_OS_IOS
+#include <crt_externs.h>
+#endif
+#endif
+
+#if GTEST_HAS_ABSL
+#include "absl/debugging/failure_signal_handler.h"
+#include "absl/debugging/stacktrace.h"
+#include "absl/debugging/symbolize.h"
+#include "absl/strings/str_cat.h"
+#endif  // GTEST_HAS_ABSL
+
+namespace testing {
+
+using internal::CountIf;
+using internal::ForEach;
+using internal::GetElementOr;
+using internal::Shuffle;
+
+// Constants.
+
+// A test whose test suite name or test name matches this filter is
+// disabled and not run.
+static const char kDisableTestFilter[] = "DISABLED_*:*/DISABLED_*";
+
+// A test suite whose name matches this filter is considered a death
+// test suite and will be run before test suites whose name doesn't
+// match this filter.
+static const char kDeathTestSuiteFilter[] = "*DeathTest:*DeathTest/*";
+
+// A test filter that matches everything.
+static const char kUniversalFilter[] = "*";
+
+// The default output format.
+static const char kDefaultOutputFormat[] = "xml";
+// The default output file.
+static const char kDefaultOutputFile[] = "test_detail";
+
+// The environment variable name for the test shard index.
+static const char kTestShardIndex[] = "GTEST_SHARD_INDEX";
+// The environment variable name for the total number of test shards.
+static const char kTestTotalShards[] = "GTEST_TOTAL_SHARDS";
+// The environment variable name for the test shard status file.
+static const char kTestShardStatusFile[] = "GTEST_SHARD_STATUS_FILE";
+
+namespace internal {
+
+// The text used in failure messages to indicate the start of the
+// stack trace.
+const char kStackTraceMarker[] = "\nStack trace:\n";
+
+// g_help_flag is true if and only if the --help flag or an equivalent form
+// is specified on the command line.
+bool g_help_flag = false;
+
+// Utilty function to Open File for Writing
+static FILE* OpenFileForWriting(const std::string& output_file) {
+  FILE* fileout = nullptr;
+  FilePath output_file_path(output_file);
+  FilePath output_dir(output_file_path.RemoveFileName());
+
+  if (output_dir.CreateDirectoriesRecursively()) {
+    fileout = posix::FOpen(output_file.c_str(), "w");
+  }
+  if (fileout == nullptr) {
+    GTEST_LOG_(FATAL) << "Unable to open file \"" << output_file << "\"";
+  }
+  return fileout;
+}
+
+}  // namespace internal
+
+// Bazel passes in the argument to '--test_filter' via the TESTBRIDGE_TEST_ONLY
+// environment variable.
+static const char* GetDefaultFilter() {
+  const char* const testbridge_test_only =
+      internal::posix::GetEnv("TESTBRIDGE_TEST_ONLY");
+  if (testbridge_test_only != nullptr) {
+    return testbridge_test_only;
+  }
+  return kUniversalFilter;
+}
+
+GTEST_DEFINE_bool_(
+    also_run_disabled_tests,
+    internal::BoolFromGTestEnv("also_run_disabled_tests", false),
+    "Run disabled tests too, in addition to the tests normally being run.");
+
+GTEST_DEFINE_bool_(
+    break_on_failure, internal::BoolFromGTestEnv("break_on_failure", false),
+    "True if and only if a failed assertion should be a debugger "
+    "break-point.");
+
+GTEST_DEFINE_bool_(catch_exceptions,
+                   internal::BoolFromGTestEnv("catch_exceptions", true),
+                   "True if and only if " GTEST_NAME_
+                   " should catch exceptions and treat them as test failures.");
+
+GTEST_DEFINE_string_(
+    color,
+    internal::StringFromGTestEnv("color", "auto"),
+    "Whether to use colors in the output.  Valid values: yes, no, "
+    "and auto.  'auto' means to use colors if the output is "
+    "being sent to a terminal and the TERM environment variable "
+    "is set to a terminal type that supports colors.");
+
+GTEST_DEFINE_string_(
+    filter,
+    internal::StringFromGTestEnv("filter", GetDefaultFilter()),
+    "A colon-separated list of glob (not regex) patterns "
+    "for filtering the tests to run, optionally followed by a "
+    "'-' and a : separated list of negative patterns (tests to "
+    "exclude).  A test is run if it matches one of the positive "
+    "patterns and does not match any of the negative patterns.");
+
+GTEST_DEFINE_bool_(
+    install_failure_signal_handler,
+    internal::BoolFromGTestEnv("install_failure_signal_handler", false),
+    "If true and supported on the current platform, " GTEST_NAME_ " should "
+    "install a signal handler that dumps debugging information when fatal "
+    "signals are raised.");
+
+GTEST_DEFINE_bool_(list_tests, false,
+                   "List all tests without running them.");
+
+// The net priority order after flag processing is thus:
+//   --gtest_output command line flag
+//   GTEST_OUTPUT environment variable
+//   XML_OUTPUT_FILE environment variable
+//   ''
+GTEST_DEFINE_string_(
+    output,
+    internal::StringFromGTestEnv("output",
+      internal::OutputFlagAlsoCheckEnvVar().c_str()),
+    "A format (defaults to \"xml\" but can be specified to be \"json\"), "
+    "optionally followed by a colon and an output file name or directory. "
+    "A directory is indicated by a trailing pathname separator. "
+    "Examples: \"xml:filename.xml\", \"xml::directoryname/\". "
+    "If a directory is specified, output files will be created "
+    "within that directory, with file-names based on the test "
+    "executable's name and, if necessary, made unique by adding "
+    "digits.");
+
+GTEST_DEFINE_bool_(print_time, internal::BoolFromGTestEnv("print_time", true),
+                   "True if and only if " GTEST_NAME_
+                   " should display elapsed time in text output.");
+
+GTEST_DEFINE_bool_(print_utf8, internal::BoolFromGTestEnv("print_utf8", true),
+                   "True if and only if " GTEST_NAME_
+                   " prints UTF8 characters as text.");
+
+GTEST_DEFINE_int32_(
+    random_seed,
+    internal::Int32FromGTestEnv("random_seed", 0),
+    "Random number seed to use when shuffling test orders.  Must be in range "
+    "[1, 99999], or 0 to use a seed based on the current time.");
+
+GTEST_DEFINE_int32_(
+    repeat,
+    internal::Int32FromGTestEnv("repeat", 1),
+    "How many times to repeat each test.  Specify a negative number "
+    "for repeating forever.  Useful for shaking out flaky tests.");
+
+GTEST_DEFINE_bool_(show_internal_stack_frames, false,
+                   "True if and only if " GTEST_NAME_
+                   " should include internal stack frames when "
+                   "printing test failure stack traces.");
+
+GTEST_DEFINE_bool_(shuffle, internal::BoolFromGTestEnv("shuffle", false),
+                   "True if and only if " GTEST_NAME_
+                   " should randomize tests' order on every run.");
+
+GTEST_DEFINE_int32_(
+    stack_trace_depth,
+    internal::Int32FromGTestEnv("stack_trace_depth", kMaxStackTraceDepth),
+    "The maximum number of stack frames to print when an "
+    "assertion fails.  The valid range is 0 through 100, inclusive.");
+
+GTEST_DEFINE_string_(
+    stream_result_to,
+    internal::StringFromGTestEnv("stream_result_to", ""),
+    "This flag specifies the host name and the port number on which to stream "
+    "test results. Example: \"localhost:555\". The flag is effective only on "
+    "Linux.");
+
+GTEST_DEFINE_bool_(
+    throw_on_failure,
+    internal::BoolFromGTestEnv("throw_on_failure", false),
+    "When this flag is specified, a failed assertion will throw an exception "
+    "if exceptions are enabled or exit the program with a non-zero code "
+    "otherwise. For use with an external test framework.");
+
+#if GTEST_USE_OWN_FLAGFILE_FLAG_
+GTEST_DEFINE_string_(
+    flagfile,
+    internal::StringFromGTestEnv("flagfile", ""),
+    "This flag specifies the flagfile to read command-line flags from.");
+#endif  // GTEST_USE_OWN_FLAGFILE_FLAG_
+
+namespace internal {
+
+// Generates a random number from [0, range), using a Linear
+// Congruential Generator (LCG).  Crashes if 'range' is 0 or greater
+// than kMaxRange.
+UInt32 Random::Generate(UInt32 range) {
+  // These constants are the same as are used in glibc's rand(3).
+  // Use wider types than necessary to prevent unsigned overflow diagnostics.
+  state_ = static_cast<UInt32>(1103515245ULL*state_ + 12345U) % kMaxRange;
+
+  GTEST_CHECK_(range > 0)
+      << "Cannot generate a number in the range [0, 0).";
+  GTEST_CHECK_(range <= kMaxRange)
+      << "Generation of a number in [0, " << range << ") was requested, "
+      << "but this can only generate numbers in [0, " << kMaxRange << ").";
+
+  // Converting via modulus introduces a bit of downward bias, but
+  // it's simple, and a linear congruential generator isn't too good
+  // to begin with.
+  return state_ % range;
+}
+
+// GTestIsInitialized() returns true if and only if the user has initialized
+// Google Test.  Useful for catching the user mistake of not initializing
+// Google Test before calling RUN_ALL_TESTS().
+static bool GTestIsInitialized() { return GetArgvs().size() > 0; }
+
+// Iterates over a vector of TestSuites, keeping a running sum of the
+// results of calling a given int-returning method on each.
+// Returns the sum.
+static int SumOverTestSuiteList(const std::vector<TestSuite*>& case_list,
+                                int (TestSuite::*method)() const) {
+  int sum = 0;
+  for (size_t i = 0; i < case_list.size(); i++) {
+    sum += (case_list[i]->*method)();
+  }
+  return sum;
+}
+
+// Returns true if and only if the test suite passed.
+static bool TestSuitePassed(const TestSuite* test_suite) {
+  return test_suite->should_run() && test_suite->Passed();
+}
+
+// Returns true if and only if the test suite failed.
+static bool TestSuiteFailed(const TestSuite* test_suite) {
+  return test_suite->should_run() && test_suite->Failed();
+}
+
+// Returns true if and only if test_suite contains at least one test that
+// should run.
+static bool ShouldRunTestSuite(const TestSuite* test_suite) {
+  return test_suite->should_run();
+}
+
+// AssertHelper constructor.
+AssertHelper::AssertHelper(TestPartResult::Type type,
+                           const char* file,
+                           int line,
+                           const char* message)
+    : data_(new AssertHelperData(type, file, line, message)) {
+}
+
+AssertHelper::~AssertHelper() {
+  delete data_;
+}
+
+// Message assignment, for assertion streaming support.
+void AssertHelper::operator=(const Message& message) const {
+  UnitTest::GetInstance()->
+    AddTestPartResult(data_->type, data_->file, data_->line,
+                      AppendUserMessage(data_->message, message),
+                      UnitTest::GetInstance()->impl()
+                      ->CurrentOsStackTraceExceptTop(1)
+                      // Skips the stack frame for this function itself.
+                      );  // NOLINT
+}
+
+// A copy of all command line arguments.  Set by InitGoogleTest().
+static ::std::vector<std::string> g_argvs;
+
+::std::vector<std::string> GetArgvs() {
+#if defined(GTEST_CUSTOM_GET_ARGVS_)
+  // GTEST_CUSTOM_GET_ARGVS_() may return a container of std::string or
+  // ::string. This code converts it to the appropriate type.
+  const auto& custom = GTEST_CUSTOM_GET_ARGVS_();
+  return ::std::vector<std::string>(custom.begin(), custom.end());
+#else   // defined(GTEST_CUSTOM_GET_ARGVS_)
+  return g_argvs;
+#endif  // defined(GTEST_CUSTOM_GET_ARGVS_)
+}
+
+// Returns the current application's name, removing directory path if that
+// is present.
+FilePath GetCurrentExecutableName() {
+  FilePath result;
+
+#if GTEST_OS_WINDOWS || GTEST_OS_OS2
+  result.Set(FilePath(GetArgvs()[0]).RemoveExtension("exe"));
+#else
+  result.Set(FilePath(GetArgvs()[0]));
+#endif  // GTEST_OS_WINDOWS
+
+  return result.RemoveDirectoryName();
+}
+
+// Functions for processing the gtest_output flag.
+
+// Returns the output format, or "" for normal printed output.
+std::string UnitTestOptions::GetOutputFormat() {
+  const char* const gtest_output_flag = GTEST_FLAG(output).c_str();
+  const char* const colon = strchr(gtest_output_flag, ':');
+  return (colon == nullptr)
+             ? std::string(gtest_output_flag)
+             : std::string(gtest_output_flag,
+                           static_cast<size_t>(colon - gtest_output_flag));
+}
+
+// Returns the name of the requested output file, or the default if none
+// was explicitly specified.
+std::string UnitTestOptions::GetAbsolutePathToOutputFile() {
+  const char* const gtest_output_flag = GTEST_FLAG(output).c_str();
+
+  std::string format = GetOutputFormat();
+  if (format.empty())
+    format = std::string(kDefaultOutputFormat);
+
+  const char* const colon = strchr(gtest_output_flag, ':');
+  if (colon == nullptr)
+    return internal::FilePath::MakeFileName(
+        internal::FilePath(
+            UnitTest::GetInstance()->original_working_dir()),
+        internal::FilePath(kDefaultOutputFile), 0,
+        format.c_str()).string();
+
+  internal::FilePath output_name(colon + 1);
+  if (!output_name.IsAbsolutePath())
+    output_name = internal::FilePath::ConcatPaths(
+        internal::FilePath(UnitTest::GetInstance()->original_working_dir()),
+        internal::FilePath(colon + 1));
+
+  if (!output_name.IsDirectory())
+    return output_name.string();
+
+  internal::FilePath result(internal::FilePath::GenerateUniqueFileName(
+      output_name, internal::GetCurrentExecutableName(),
+      GetOutputFormat().c_str()));
+  return result.string();
+}
+
+// Returns true if and only if the wildcard pattern matches the string.
+// The first ':' or '\0' character in pattern marks the end of it.
+//
+// This recursive algorithm isn't very efficient, but is clear and
+// works well enough for matching test names, which are short.
+bool UnitTestOptions::PatternMatchesString(const char *pattern,
+                                           const char *str) {
+  switch (*pattern) {
+    case '\0':
+    case ':':  // Either ':' or '\0' marks the end of the pattern.
+      return *str == '\0';
+    case '?':  // Matches any single character.
+      return *str != '\0' && PatternMatchesString(pattern + 1, str + 1);
+    case '*':  // Matches any string (possibly empty) of characters.
+      return (*str != '\0' && PatternMatchesString(pattern, str + 1)) ||
+          PatternMatchesString(pattern + 1, str);
+    default:  // Non-special character.  Matches itself.
+      return *pattern == *str &&
+          PatternMatchesString(pattern + 1, str + 1);
+  }
+}
+
+bool UnitTestOptions::MatchesFilter(
+    const std::string& name, const char* filter) {
+  const char *cur_pattern = filter;
+  for (;;) {
+    if (PatternMatchesString(cur_pattern, name.c_str())) {
+      return true;
+    }
+
+    // Finds the next pattern in the filter.
+    cur_pattern = strchr(cur_pattern, ':');
+
+    // Returns if no more pattern can be found.
+    if (cur_pattern == nullptr) {
+      return false;
+    }
+
+    // Skips the pattern separater (the ':' character).
+    cur_pattern++;
+  }
+}
+
+// Returns true if and only if the user-specified filter matches the test
+// suite name and the test name.
+bool UnitTestOptions::FilterMatchesTest(const std::string& test_suite_name,
+                                        const std::string& test_name) {
+  const std::string& full_name = test_suite_name + "." + test_name.c_str();
+
+  // Split --gtest_filter at '-', if there is one, to separate into
+  // positive filter and negative filter portions
+  const char* const p = GTEST_FLAG(filter).c_str();
+  const char* const dash = strchr(p, '-');
+  std::string positive;
+  std::string negative;
+  if (dash == nullptr) {
+    positive = GTEST_FLAG(filter).c_str();  // Whole string is a positive filter
+    negative = "";
+  } else {
+    positive = std::string(p, dash);   // Everything up to the dash
+    negative = std::string(dash + 1);  // Everything after the dash
+    if (positive.empty()) {
+      // Treat '-test1' as the same as '*-test1'
+      positive = kUniversalFilter;
+    }
+  }
+
+  // A filter is a colon-separated list of patterns.  It matches a
+  // test if any pattern in it matches the test.
+  return (MatchesFilter(full_name, positive.c_str()) &&
+          !MatchesFilter(full_name, negative.c_str()));
+}
+
+#if GTEST_HAS_SEH
+// Returns EXCEPTION_EXECUTE_HANDLER if Google Test should handle the
+// given SEH exception, or EXCEPTION_CONTINUE_SEARCH otherwise.
+// This function is useful as an __except condition.
+int UnitTestOptions::GTestShouldProcessSEH(DWORD exception_code) {
+  // Google Test should handle a SEH exception if:
+  //   1. the user wants it to, AND
+  //   2. this is not a breakpoint exception, AND
+  //   3. this is not a C++ exception (VC++ implements them via SEH,
+  //      apparently).
+  //
+  // SEH exception code for C++ exceptions.
+  // (see http://support.microsoft.com/kb/185294 for more information).
+  const DWORD kCxxExceptionCode = 0xe06d7363;
+
+  bool should_handle = true;
+
+  if (!GTEST_FLAG(catch_exceptions))
+    should_handle = false;
+  else if (exception_code == EXCEPTION_BREAKPOINT)
+    should_handle = false;
+  else if (exception_code == kCxxExceptionCode)
+    should_handle = false;
+
+  return should_handle ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH;
+}
+#endif  // GTEST_HAS_SEH
+
+}  // namespace internal
+
+// The c'tor sets this object as the test part result reporter used by
+// Google Test.  The 'result' parameter specifies where to report the
+// results. Intercepts only failures from the current thread.
+ScopedFakeTestPartResultReporter::ScopedFakeTestPartResultReporter(
+    TestPartResultArray* result)
+    : intercept_mode_(INTERCEPT_ONLY_CURRENT_THREAD),
+      result_(result) {
+  Init();
+}
+
+// The c'tor sets this object as the test part result reporter used by
+// Google Test.  The 'result' parameter specifies where to report the
+// results.
+ScopedFakeTestPartResultReporter::ScopedFakeTestPartResultReporter(
+    InterceptMode intercept_mode, TestPartResultArray* result)
+    : intercept_mode_(intercept_mode),
+      result_(result) {
+  Init();
+}
+
+void ScopedFakeTestPartResultReporter::Init() {
+  internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
+  if (intercept_mode_ == INTERCEPT_ALL_THREADS) {
+    old_reporter_ = impl->GetGlobalTestPartResultReporter();
+    impl->SetGlobalTestPartResultReporter(this);
+  } else {
+    old_reporter_ = impl->GetTestPartResultReporterForCurrentThread();
+    impl->SetTestPartResultReporterForCurrentThread(this);
+  }
+}
+
+// The d'tor restores the test part result reporter used by Google Test
+// before.
+ScopedFakeTestPartResultReporter::~ScopedFakeTestPartResultReporter() {
+  internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
+  if (intercept_mode_ == INTERCEPT_ALL_THREADS) {
+    impl->SetGlobalTestPartResultReporter(old_reporter_);
+  } else {
+    impl->SetTestPartResultReporterForCurrentThread(old_reporter_);
+  }
+}
+
+// Increments the test part result count and remembers the result.
+// This method is from the TestPartResultReporterInterface interface.
+void ScopedFakeTestPartResultReporter::ReportTestPartResult(
+    const TestPartResult& result) {
+  result_->Append(result);
+}
+
+namespace internal {
+
+// Returns the type ID of ::testing::Test.  We should always call this
+// instead of GetTypeId< ::testing::Test>() to get the type ID of
+// testing::Test.  This is to work around a suspected linker bug when
+// using Google Test as a framework on Mac OS X.  The bug causes
+// GetTypeId< ::testing::Test>() to return different values depending
+// on whether the call is from the Google Test framework itself or
+// from user test code.  GetTestTypeId() is guaranteed to always
+// return the same value, as it always calls GetTypeId<>() from the
+// gtest.cc, which is within the Google Test framework.
+TypeId GetTestTypeId() {
+  return GetTypeId<Test>();
+}
+
+// The value of GetTestTypeId() as seen from within the Google Test
+// library.  This is solely for testing GetTestTypeId().
+extern const TypeId kTestTypeIdInGoogleTest = GetTestTypeId();
+
+// This predicate-formatter checks that 'results' contains a test part
+// failure of the given type and that the failure message contains the
+// given substring.
+static AssertionResult HasOneFailure(const char* /* results_expr */,
+                                     const char* /* type_expr */,
+                                     const char* /* substr_expr */,
+                                     const TestPartResultArray& results,
+                                     TestPartResult::Type type,
+                                     const std::string& substr) {
+  const std::string expected(type == TestPartResult::kFatalFailure ?
+                        "1 fatal failure" :
+                        "1 non-fatal failure");
+  Message msg;
+  if (results.size() != 1) {
+    msg << "Expected: " << expected << "\n"
+        << "  Actual: " << results.size() << " failures";
+    for (int i = 0; i < results.size(); i++) {
+      msg << "\n" << results.GetTestPartResult(i);
+    }
+    return AssertionFailure() << msg;
+  }
+
+  const TestPartResult& r = results.GetTestPartResult(0);
+  if (r.type() != type) {
+    return AssertionFailure() << "Expected: " << expected << "\n"
+                              << "  Actual:\n"
+                              << r;
+  }
+
+  if (strstr(r.message(), substr.c_str()) == nullptr) {
+    return AssertionFailure() << "Expected: " << expected << " containing \""
+                              << substr << "\"\n"
+                              << "  Actual:\n"
+                              << r;
+  }
+
+  return AssertionSuccess();
+}
+
+// The constructor of SingleFailureChecker remembers where to look up
+// test part results, what type of failure we expect, and what
+// substring the failure message should contain.
+SingleFailureChecker::SingleFailureChecker(const TestPartResultArray* results,
+                                           TestPartResult::Type type,
+                                           const std::string& substr)
+    : results_(results), type_(type), substr_(substr) {}
+
+// The destructor of SingleFailureChecker verifies that the given
+// TestPartResultArray contains exactly one failure that has the given
+// type and contains the given substring.  If that's not the case, a
+// non-fatal failure will be generated.
+SingleFailureChecker::~SingleFailureChecker() {
+  EXPECT_PRED_FORMAT3(HasOneFailure, *results_, type_, substr_);
+}
+
+DefaultGlobalTestPartResultReporter::DefaultGlobalTestPartResultReporter(
+    UnitTestImpl* unit_test) : unit_test_(unit_test) {}
+
+void DefaultGlobalTestPartResultReporter::ReportTestPartResult(
+    const TestPartResult& result) {
+  unit_test_->current_test_result()->AddTestPartResult(result);
+  unit_test_->listeners()->repeater()->OnTestPartResult(result);
+}
+
+DefaultPerThreadTestPartResultReporter::DefaultPerThreadTestPartResultReporter(
+    UnitTestImpl* unit_test) : unit_test_(unit_test) {}
+
+void DefaultPerThreadTestPartResultReporter::ReportTestPartResult(
+    const TestPartResult& result) {
+  unit_test_->GetGlobalTestPartResultReporter()->ReportTestPartResult(result);
+}
+
+// Returns the global test part result reporter.
+TestPartResultReporterInterface*
+UnitTestImpl::GetGlobalTestPartResultReporter() {
+  internal::MutexLock lock(&global_test_part_result_reporter_mutex_);
+  return global_test_part_result_repoter_;
+}
+
+// Sets the global test part result reporter.
+void UnitTestImpl::SetGlobalTestPartResultReporter(
+    TestPartResultReporterInterface* reporter) {
+  internal::MutexLock lock(&global_test_part_result_reporter_mutex_);
+  global_test_part_result_repoter_ = reporter;
+}
+
+// Returns the test part result reporter for the current thread.
+TestPartResultReporterInterface*
+UnitTestImpl::GetTestPartResultReporterForCurrentThread() {
+  return per_thread_test_part_result_reporter_.get();
+}
+
+// Sets the test part result reporter for the current thread.
+void UnitTestImpl::SetTestPartResultReporterForCurrentThread(
+    TestPartResultReporterInterface* reporter) {
+  per_thread_test_part_result_reporter_.set(reporter);
+}
+
+// Gets the number of successful test suites.
+int UnitTestImpl::successful_test_suite_count() const {
+  return CountIf(test_suites_, TestSuitePassed);
+}
+
+// Gets the number of failed test suites.
+int UnitTestImpl::failed_test_suite_count() const {
+  return CountIf(test_suites_, TestSuiteFailed);
+}
+
+// Gets the number of all test suites.
+int UnitTestImpl::total_test_suite_count() const {
+  return static_cast<int>(test_suites_.size());
+}
+
+// Gets the number of all test suites that contain at least one test
+// that should run.
+int UnitTestImpl::test_suite_to_run_count() const {
+  return CountIf(test_suites_, ShouldRunTestSuite);
+}
+
+// Gets the number of successful tests.
+int UnitTestImpl::successful_test_count() const {
+  return SumOverTestSuiteList(test_suites_, &TestSuite::successful_test_count);
+}
+
+// Gets the number of skipped tests.
+int UnitTestImpl::skipped_test_count() const {
+  return SumOverTestSuiteList(test_suites_, &TestSuite::skipped_test_count);
+}
+
+// Gets the number of failed tests.
+int UnitTestImpl::failed_test_count() const {
+  return SumOverTestSuiteList(test_suites_, &TestSuite::failed_test_count);
+}
+
+// Gets the number of disabled tests that will be reported in the XML report.
+int UnitTestImpl::reportable_disabled_test_count() const {
+  return SumOverTestSuiteList(test_suites_,
+                              &TestSuite::reportable_disabled_test_count);
+}
+
+// Gets the number of disabled tests.
+int UnitTestImpl::disabled_test_count() const {
+  return SumOverTestSuiteList(test_suites_, &TestSuite::disabled_test_count);
+}
+
+// Gets the number of tests to be printed in the XML report.
+int UnitTestImpl::reportable_test_count() const {
+  return SumOverTestSuiteList(test_suites_, &TestSuite::reportable_test_count);
+}
+
+// Gets the number of all tests.
+int UnitTestImpl::total_test_count() const {
+  return SumOverTestSuiteList(test_suites_, &TestSuite::total_test_count);
+}
+
+// Gets the number of tests that should run.
+int UnitTestImpl::test_to_run_count() const {
+  return SumOverTestSuiteList(test_suites_, &TestSuite::test_to_run_count);
+}
+
+// Returns the current OS stack trace as an std::string.
+//
+// The maximum number of stack frames to be included is specified by
+// the gtest_stack_trace_depth flag.  The skip_count parameter
+// specifies the number of top frames to be skipped, which doesn't
+// count against the number of frames to be included.
+//
+// For example, if Foo() calls Bar(), which in turn calls
+// CurrentOsStackTraceExceptTop(1), Foo() will be included in the
+// trace but Bar() and CurrentOsStackTraceExceptTop() won't.
+std::string UnitTestImpl::CurrentOsStackTraceExceptTop(int skip_count) {
+  return os_stack_trace_getter()->CurrentStackTrace(
+      static_cast<int>(GTEST_FLAG(stack_trace_depth)),
+      skip_count + 1
+      // Skips the user-specified number of frames plus this function
+      // itself.
+      );  // NOLINT
+}
+
+// Returns the current time in milliseconds.
+TimeInMillis GetTimeInMillis() {
+#if GTEST_OS_WINDOWS_MOBILE || defined(__BORLANDC__)
+  // Difference between 1970-01-01 and 1601-01-01 in milliseconds.
+  // http://analogous.blogspot.com/2005/04/epoch.html
+  const TimeInMillis kJavaEpochToWinFileTimeDelta =
+    static_cast<TimeInMillis>(116444736UL) * 100000UL;
+  const DWORD kTenthMicrosInMilliSecond = 10000;
+
+  SYSTEMTIME now_systime;
+  FILETIME now_filetime;
+  ULARGE_INTEGER now_int64;
+  GetSystemTime(&now_systime);
+  if (SystemTimeToFileTime(&now_systime, &now_filetime)) {
+    now_int64.LowPart = now_filetime.dwLowDateTime;
+    now_int64.HighPart = now_filetime.dwHighDateTime;
+    now_int64.QuadPart = (now_int64.QuadPart / kTenthMicrosInMilliSecond) -
+      kJavaEpochToWinFileTimeDelta;
+    return now_int64.QuadPart;
+  }
+  return 0;
+#elif GTEST_OS_WINDOWS && !GTEST_HAS_GETTIMEOFDAY_
+  __timeb64 now;
+
+  // MSVC 8 deprecates _ftime64(), so we want to suppress warning 4996
+  // (deprecated function) there.
+  GTEST_DISABLE_MSC_DEPRECATED_PUSH_()
+  _ftime64(&now);
+  GTEST_DISABLE_MSC_DEPRECATED_POP_()
+
+  return static_cast<TimeInMillis>(now.time) * 1000 + now.millitm;
+#elif GTEST_HAS_GETTIMEOFDAY_
+  struct timeval now;
+  gettimeofday(&now, nullptr);
+  return static_cast<TimeInMillis>(now.tv_sec) * 1000 + now.tv_usec / 1000;
+#else
+# error "Don't know how to get the current time on your system."
+#endif
+}
+
+// Utilities
+
+// class String.
+
+#if GTEST_OS_WINDOWS_MOBILE
+// Creates a UTF-16 wide string from the given ANSI string, allocating
+// memory using new. The caller is responsible for deleting the return
+// value using delete[]. Returns the wide string, or NULL if the
+// input is NULL.
+LPCWSTR String::AnsiToUtf16(const char* ansi) {
+  if (!ansi) return nullptr;
+  const int length = strlen(ansi);
+  const int unicode_length =
+      MultiByteToWideChar(CP_ACP, 0, ansi, length, nullptr, 0);
+  WCHAR* unicode = new WCHAR[unicode_length + 1];
+  MultiByteToWideChar(CP_ACP, 0, ansi, length,
+                      unicode, unicode_length);
+  unicode[unicode_length] = 0;
+  return unicode;
+}
+
+// Creates an ANSI string from the given wide string, allocating
+// memory using new. The caller is responsible for deleting the return
+// value using delete[]. Returns the ANSI string, or NULL if the
+// input is NULL.
+const char* String::Utf16ToAnsi(LPCWSTR utf16_str)  {
+  if (!utf16_str) return nullptr;
+  const int ansi_length = WideCharToMultiByte(CP_ACP, 0, utf16_str, -1, nullptr,
+                                              0, nullptr, nullptr);
+  char* ansi = new char[ansi_length + 1];
+  WideCharToMultiByte(CP_ACP, 0, utf16_str, -1, ansi, ansi_length, nullptr,
+                      nullptr);
+  ansi[ansi_length] = 0;
+  return ansi;
+}
+
+#endif  // GTEST_OS_WINDOWS_MOBILE
+
+// Compares two C strings.  Returns true if and only if they have the same
+// content.
+//
+// Unlike strcmp(), this function can handle NULL argument(s).  A NULL
+// C string is considered different to any non-NULL C string,
+// including the empty string.
+bool String::CStringEquals(const char * lhs, const char * rhs) {
+  if (lhs == nullptr) return rhs == nullptr;
+
+  if (rhs == nullptr) return false;
+
+  return strcmp(lhs, rhs) == 0;
+}
+
+#if GTEST_HAS_STD_WSTRING
+
+// Converts an array of wide chars to a narrow string using the UTF-8
+// encoding, and streams the result to the given Message object.
+static void StreamWideCharsToMessage(const wchar_t* wstr, size_t length,
+                                     Message* msg) {
+  for (size_t i = 0; i != length; ) {  // NOLINT
+    if (wstr[i] != L'\0') {
+      *msg << WideStringToUtf8(wstr + i, static_cast<int>(length - i));
+      while (i != length && wstr[i] != L'\0')
+        i++;
+    } else {
+      *msg << '\0';
+      i++;
+    }
+  }
+}
+
+#endif  // GTEST_HAS_STD_WSTRING
+
+void SplitString(const ::std::string& str, char delimiter,
+                 ::std::vector< ::std::string>* dest) {
+  ::std::vector< ::std::string> parsed;
+  ::std::string::size_type pos = 0;
+  while (::testing::internal::AlwaysTrue()) {
+    const ::std::string::size_type colon = str.find(delimiter, pos);
+    if (colon == ::std::string::npos) {
+      parsed.push_back(str.substr(pos));
+      break;
+    } else {
+      parsed.push_back(str.substr(pos, colon - pos));
+      pos = colon + 1;
+    }
+  }
+  dest->swap(parsed);
+}
+
+}  // namespace internal
+
+// Constructs an empty Message.
+// We allocate the stringstream separately because otherwise each use of
+// ASSERT/EXPECT in a procedure adds over 200 bytes to the procedure's
+// stack frame leading to huge stack frames in some cases; gcc does not reuse
+// the stack space.
+Message::Message() : ss_(new ::std::stringstream) {
+  // By default, we want there to be enough precision when printing
+  // a double to a Message.
+  *ss_ << std::setprecision(std::numeric_limits<double>::digits10 + 2);
+}
+
+// These two overloads allow streaming a wide C string to a Message
+// using the UTF-8 encoding.
+Message& Message::operator <<(const wchar_t* wide_c_str) {
+  return *this << internal::String::ShowWideCString(wide_c_str);
+}
+Message& Message::operator <<(wchar_t* wide_c_str) {
+  return *this << internal::String::ShowWideCString(wide_c_str);
+}
+
+#if GTEST_HAS_STD_WSTRING
+// Converts the given wide string to a narrow string using the UTF-8
+// encoding, and streams the result to this Message object.
+Message& Message::operator <<(const ::std::wstring& wstr) {
+  internal::StreamWideCharsToMessage(wstr.c_str(), wstr.length(), this);
+  return *this;
+}
+#endif  // GTEST_HAS_STD_WSTRING
+
+// Gets the text streamed to this object so far as an std::string.
+// Each '\0' character in the buffer is replaced with "\\0".
+std::string Message::GetString() const {
+  return internal::StringStreamToString(ss_.get());
+}
+
+// AssertionResult constructors.
+// Used in EXPECT_TRUE/FALSE(assertion_result).
+AssertionResult::AssertionResult(const AssertionResult& other)
+    : success_(other.success_),
+      message_(other.message_.get() != nullptr
+                   ? new ::std::string(*other.message_)
+                   : static_cast< ::std::string*>(nullptr)) {}
+
+// Swaps two AssertionResults.
+void AssertionResult::swap(AssertionResult& other) {
+  using std::swap;
+  swap(success_, other.success_);
+  swap(message_, other.message_);
+}
+
+// Returns the assertion's negation. Used with EXPECT/ASSERT_FALSE.
+AssertionResult AssertionResult::operator!() const {
+  AssertionResult negation(!success_);
+  if (message_.get() != nullptr) negation << *message_;
+  return negation;
+}
+
+// Makes a successful assertion result.
+AssertionResult AssertionSuccess() {
+  return AssertionResult(true);
+}
+
+// Makes a failed assertion result.
+AssertionResult AssertionFailure() {
+  return AssertionResult(false);
+}
+
+// Makes a failed assertion result with the given failure message.
+// Deprecated; use AssertionFailure() << message.
+AssertionResult AssertionFailure(const Message& message) {
+  return AssertionFailure() << message;
+}
+
+namespace internal {
+
+namespace edit_distance {
+std::vector<EditType> CalculateOptimalEdits(const std::vector<size_t>& left,
+                                            const std::vector<size_t>& right) {
+  std::vector<std::vector<double> > costs(
+      left.size() + 1, std::vector<double>(right.size() + 1));
+  std::vector<std::vector<EditType> > best_move(
+      left.size() + 1, std::vector<EditType>(right.size() + 1));
+
+  // Populate for empty right.
+  for (size_t l_i = 0; l_i < costs.size(); ++l_i) {
+    costs[l_i][0] = static_cast<double>(l_i);
+    best_move[l_i][0] = kRemove;
+  }
+  // Populate for empty left.
+  for (size_t r_i = 1; r_i < costs[0].size(); ++r_i) {
+    costs[0][r_i] = static_cast<double>(r_i);
+    best_move[0][r_i] = kAdd;
+  }
+
+  for (size_t l_i = 0; l_i < left.size(); ++l_i) {
+    for (size_t r_i = 0; r_i < right.size(); ++r_i) {
+      if (left[l_i] == right[r_i]) {
+        // Found a match. Consume it.
+        costs[l_i + 1][r_i + 1] = costs[l_i][r_i];
+        best_move[l_i + 1][r_i + 1] = kMatch;
+        continue;
+      }
+
+      const double add = costs[l_i + 1][r_i];
+      const double remove = costs[l_i][r_i + 1];
+      const double replace = costs[l_i][r_i];
+      if (add < remove && add < replace) {
+        costs[l_i + 1][r_i + 1] = add + 1;
+        best_move[l_i + 1][r_i + 1] = kAdd;
+      } else if (remove < add && remove < replace) {
+        costs[l_i + 1][r_i + 1] = remove + 1;
+        best_move[l_i + 1][r_i + 1] = kRemove;
+      } else {
+        // We make replace a little more expensive than add/remove to lower
+        // their priority.
+        costs[l_i + 1][r_i + 1] = replace + 1.00001;
+        best_move[l_i + 1][r_i + 1] = kReplace;
+      }
+    }
+  }
+
+  // Reconstruct the best path. We do it in reverse order.
+  std::vector<EditType> best_path;
+  for (size_t l_i = left.size(), r_i = right.size(); l_i > 0 || r_i > 0;) {
+    EditType move = best_move[l_i][r_i];
+    best_path.push_back(move);
+    l_i -= move != kAdd;
+    r_i -= move != kRemove;
+  }
+  std::reverse(best_path.begin(), best_path.end());
+  return best_path;
+}
+
+namespace {
+
+// Helper class to convert string into ids with deduplication.
+class InternalStrings {
+ public:
+  size_t GetId(const std::string& str) {
+    IdMap::iterator it = ids_.find(str);
+    if (it != ids_.end()) return it->second;
+    size_t id = ids_.size();
+    return ids_[str] = id;
+  }
+
+ private:
+  typedef std::map<std::string, size_t> IdMap;
+  IdMap ids_;
+};
+
+}  // namespace
+
+std::vector<EditType> CalculateOptimalEdits(
+    const std::vector<std::string>& left,
+    const std::vector<std::string>& right) {
+  std::vector<size_t> left_ids, right_ids;
+  {
+    InternalStrings intern_table;
+    for (size_t i = 0; i < left.size(); ++i) {
+      left_ids.push_back(intern_table.GetId(left[i]));
+    }
+    for (size_t i = 0; i < right.size(); ++i) {
+      right_ids.push_back(intern_table.GetId(right[i]));
+    }
+  }
+  return CalculateOptimalEdits(left_ids, right_ids);
+}
+
+namespace {
+
+// Helper class that holds the state for one hunk and prints it out to the
+// stream.
+// It reorders adds/removes when possible to group all removes before all
+// adds. It also adds the hunk header before printint into the stream.
+class Hunk {
+ public:
+  Hunk(size_t left_start, size_t right_start)
+      : left_start_(left_start),
+        right_start_(right_start),
+        adds_(),
+        removes_(),
+        common_() {}
+
+  void PushLine(char edit, const char* line) {
+    switch (edit) {
+      case ' ':
+        ++common_;
+        FlushEdits();
+        hunk_.push_back(std::make_pair(' ', line));
+        break;
+      case '-':
+        ++removes_;
+        hunk_removes_.push_back(std::make_pair('-', line));
+        break;
+      case '+':
+        ++adds_;
+        hunk_adds_.push_back(std::make_pair('+', line));
+        break;
+    }
+  }
+
+  void PrintTo(std::ostream* os) {
+    PrintHeader(os);
+    FlushEdits();
+    for (std::list<std::pair<char, const char*> >::const_iterator it =
+             hunk_.begin();
+         it != hunk_.end(); ++it) {
+      *os << it->first << it->second << "\n";
+    }
+  }
+
+  bool has_edits() const { return adds_ || removes_; }
+
+ private:
+  void FlushEdits() {
+    hunk_.splice(hunk_.end(), hunk_removes_);
+    hunk_.splice(hunk_.end(), hunk_adds_);
+  }
+
+  // Print a unified diff header for one hunk.
+  // The format is
+  //   "@@ -<left_start>,<left_length> +<right_start>,<right_length> @@"
+  // where the left/right parts are omitted if unnecessary.
+  void PrintHeader(std::ostream* ss) const {
+    *ss << "@@ ";
+    if (removes_) {
+      *ss << "-" << left_start_ << "," << (removes_ + common_);
+    }
+    if (removes_ && adds_) {
+      *ss << " ";
+    }
+    if (adds_) {
+      *ss << "+" << right_start_ << "," << (adds_ + common_);
+    }
+    *ss << " @@\n";
+  }
+
+  size_t left_start_, right_start_;
+  size_t adds_, removes_, common_;
+  std::list<std::pair<char, const char*> > hunk_, hunk_adds_, hunk_removes_;
+};
+
+}  // namespace
+
+// Create a list of diff hunks in Unified diff format.
+// Each hunk has a header generated by PrintHeader above plus a body with
+// lines prefixed with ' ' for no change, '-' for deletion and '+' for
+// addition.
+// 'context' represents the desired unchanged prefix/suffix around the diff.
+// If two hunks are close enough that their contexts overlap, then they are
+// joined into one hunk.
+std::string CreateUnifiedDiff(const std::vector<std::string>& left,
+                              const std::vector<std::string>& right,
+                              size_t context) {
+  const std::vector<EditType> edits = CalculateOptimalEdits(left, right);
+
+  size_t l_i = 0, r_i = 0, edit_i = 0;
+  std::stringstream ss;
+  while (edit_i < edits.size()) {
+    // Find first edit.
+    while (edit_i < edits.size() && edits[edit_i] == kMatch) {
+      ++l_i;
+      ++r_i;
+      ++edit_i;
+    }
+
+    // Find the first line to include in the hunk.
+    const size_t prefix_context = std::min(l_i, context);
+    Hunk hunk(l_i - prefix_context + 1, r_i - prefix_context + 1);
+    for (size_t i = prefix_context; i > 0; --i) {
+      hunk.PushLine(' ', left[l_i - i].c_str());
+    }
+
+    // Iterate the edits until we found enough suffix for the hunk or the input
+    // is over.
+    size_t n_suffix = 0;
+    for (; edit_i < edits.size(); ++edit_i) {
+      if (n_suffix >= context) {
+        // Continue only if the next hunk is very close.
+        auto it = edits.begin() + static_cast<int>(edit_i);
+        while (it != edits.end() && *it == kMatch) ++it;
+        if (it == edits.end() ||
+            static_cast<size_t>(it - edits.begin()) - edit_i >= context) {
+          // There is no next edit or it is too far away.
+          break;
+        }
+      }
+
+      EditType edit = edits[edit_i];
+      // Reset count when a non match is found.
+      n_suffix = edit == kMatch ? n_suffix + 1 : 0;
+
+      if (edit == kMatch || edit == kRemove || edit == kReplace) {
+        hunk.PushLine(edit == kMatch ? ' ' : '-', left[l_i].c_str());
+      }
+      if (edit == kAdd || edit == kReplace) {
+        hunk.PushLine('+', right[r_i].c_str());
+      }
+
+      // Advance indices, depending on edit type.
+      l_i += edit != kAdd;
+      r_i += edit != kRemove;
+    }
+
+    if (!hunk.has_edits()) {
+      // We are done. We don't want this hunk.
+      break;
+    }
+
+    hunk.PrintTo(&ss);
+  }
+  return ss.str();
+}
+
+}  // namespace edit_distance
+
+namespace {
+
+// The string representation of the values received in EqFailure() are already
+// escaped. Split them on escaped '\n' boundaries. Leave all other escaped
+// characters the same.
+std::vector<std::string> SplitEscapedString(const std::string& str) {
+  std::vector<std::string> lines;
+  size_t start = 0, end = str.size();
+  if (end > 2 && str[0] == '"' && str[end - 1] == '"') {
+    ++start;
+    --end;
+  }
+  bool escaped = false;
+  for (size_t i = start; i + 1 < end; ++i) {
+    if (escaped) {
+      escaped = false;
+      if (str[i] == 'n') {
+        lines.push_back(str.substr(start, i - start - 1));
+        start = i + 1;
+      }
+    } else {
+      escaped = str[i] == '\\';
+    }
+  }
+  lines.push_back(str.substr(start, end - start));
+  return lines;
+}
+
+}  // namespace
+
+// Constructs and returns the message for an equality assertion
+// (e.g. ASSERT_EQ, EXPECT_STREQ, etc) failure.
+//
+// The first four parameters are the expressions used in the assertion
+// and their values, as strings.  For example, for ASSERT_EQ(foo, bar)
+// where foo is 5 and bar is 6, we have:
+//
+//   lhs_expression: "foo"
+//   rhs_expression: "bar"
+//   lhs_value:      "5"
+//   rhs_value:      "6"
+//
+// The ignoring_case parameter is true if and only if the assertion is a
+// *_STRCASEEQ*.  When it's true, the string "Ignoring case" will
+// be inserted into the message.
+AssertionResult EqFailure(const char* lhs_expression,
+                          const char* rhs_expression,
+                          const std::string& lhs_value,
+                          const std::string& rhs_value,
+                          bool ignoring_case) {
+  Message msg;
+  msg << "Expected equality of these values:";
+  msg << "\n  " << lhs_expression;
+  if (lhs_value != lhs_expression) {
+    msg << "\n    Which is: " << lhs_value;
+  }
+  msg << "\n  " << rhs_expression;
+  if (rhs_value != rhs_expression) {
+    msg << "\n    Which is: " << rhs_value;
+  }
+
+  if (ignoring_case) {
+    msg << "\nIgnoring case";
+  }
+
+  if (!lhs_value.empty() && !rhs_value.empty()) {
+    const std::vector<std::string> lhs_lines =
+        SplitEscapedString(lhs_value);
+    const std::vector<std::string> rhs_lines =
+        SplitEscapedString(rhs_value);
+    if (lhs_lines.size() > 1 || rhs_lines.size() > 1) {
+      msg << "\nWith diff:\n"
+          << edit_distance::CreateUnifiedDiff(lhs_lines, rhs_lines);
+    }
+  }
+
+  return AssertionFailure() << msg;
+}
+
+// Constructs a failure message for Boolean assertions such as EXPECT_TRUE.
+std::string GetBoolAssertionFailureMessage(
+    const AssertionResult& assertion_result,
+    const char* expression_text,
+    const char* actual_predicate_value,
+    const char* expected_predicate_value) {
+  const char* actual_message = assertion_result.message();
+  Message msg;
+  msg << "Value of: " << expression_text
+      << "\n  Actual: " << actual_predicate_value;
+  if (actual_message[0] != '\0')
+    msg << " (" << actual_message << ")";
+  msg << "\nExpected: " << expected_predicate_value;
+  return msg.GetString();
+}
+
+// Helper function for implementing ASSERT_NEAR.
+AssertionResult DoubleNearPredFormat(const char* expr1,
+                                     const char* expr2,
+                                     const char* abs_error_expr,
+                                     double val1,
+                                     double val2,
+                                     double abs_error) {
+  const double diff = fabs(val1 - val2);
+  if (diff <= abs_error) return AssertionSuccess();
+
+  return AssertionFailure()
+      << "The difference between " << expr1 << " and " << expr2
+      << " is " << diff << ", which exceeds " << abs_error_expr << ", where\n"
+      << expr1 << " evaluates to " << val1 << ",\n"
+      << expr2 << " evaluates to " << val2 << ", and\n"
+      << abs_error_expr << " evaluates to " << abs_error << ".";
+}
+
+
+// Helper template for implementing FloatLE() and DoubleLE().
+template <typename RawType>
+AssertionResult FloatingPointLE(const char* expr1,
+                                const char* expr2,
+                                RawType val1,
+                                RawType val2) {
+  // Returns success if val1 is less than val2,
+  if (val1 < val2) {
+    return AssertionSuccess();
+  }
+
+  // or if val1 is almost equal to val2.
+  const FloatingPoint<RawType> lhs(val1), rhs(val2);
+  if (lhs.AlmostEquals(rhs)) {
+    return AssertionSuccess();
+  }
+
+  // Note that the above two checks will both fail if either val1 or
+  // val2 is NaN, as the IEEE floating-point standard requires that
+  // any predicate involving a NaN must return false.
+
+  ::std::stringstream val1_ss;
+  val1_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
+          << val1;
+
+  ::std::stringstream val2_ss;
+  val2_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
+          << val2;
+
+  return AssertionFailure()
+      << "Expected: (" << expr1 << ") <= (" << expr2 << ")\n"
+      << "  Actual: " << StringStreamToString(&val1_ss) << " vs "
+      << StringStreamToString(&val2_ss);
+}
+
+}  // namespace internal
+
+// Asserts that val1 is less than, or almost equal to, val2.  Fails
+// otherwise.  In particular, it fails if either val1 or val2 is NaN.
+AssertionResult FloatLE(const char* expr1, const char* expr2,
+                        float val1, float val2) {
+  return internal::FloatingPointLE<float>(expr1, expr2, val1, val2);
+}
+
+// Asserts that val1 is less than, or almost equal to, val2.  Fails
+// otherwise.  In particular, it fails if either val1 or val2 is NaN.
+AssertionResult DoubleLE(const char* expr1, const char* expr2,
+                         double val1, double val2) {
+  return internal::FloatingPointLE<double>(expr1, expr2, val1, val2);
+}
+
+namespace internal {
+
+// The helper function for {ASSERT|EXPECT}_EQ with int or enum
+// arguments.
+AssertionResult CmpHelperEQ(const char* lhs_expression,
+                            const char* rhs_expression,
+                            BiggestInt lhs,
+                            BiggestInt rhs) {
+  if (lhs == rhs) {
+    return AssertionSuccess();
+  }
+
+  return EqFailure(lhs_expression,
+                   rhs_expression,
+                   FormatForComparisonFailureMessage(lhs, rhs),
+                   FormatForComparisonFailureMessage(rhs, lhs),
+                   false);
+}
+
+// A macro for implementing the helper functions needed to implement
+// ASSERT_?? and EXPECT_?? with integer or enum arguments.  It is here
+// just to avoid copy-and-paste of similar code.
+#define GTEST_IMPL_CMP_HELPER_(op_name, op)\
+AssertionResult CmpHelper##op_name(const char* expr1, const char* expr2, \
+                                   BiggestInt val1, BiggestInt val2) {\
+  if (val1 op val2) {\
+    return AssertionSuccess();\
+  } else {\
+    return AssertionFailure() \
+        << "Expected: (" << expr1 << ") " #op " (" << expr2\
+        << "), actual: " << FormatForComparisonFailureMessage(val1, val2)\
+        << " vs " << FormatForComparisonFailureMessage(val2, val1);\
+  }\
+}
+
+// Implements the helper function for {ASSERT|EXPECT}_NE with int or
+// enum arguments.
+GTEST_IMPL_CMP_HELPER_(NE, !=)
+// Implements the helper function for {ASSERT|EXPECT}_LE with int or
+// enum arguments.
+GTEST_IMPL_CMP_HELPER_(LE, <=)
+// Implements the helper function for {ASSERT|EXPECT}_LT with int or
+// enum arguments.
+GTEST_IMPL_CMP_HELPER_(LT, < )
+// Implements the helper function for {ASSERT|EXPECT}_GE with int or
+// enum arguments.
+GTEST_IMPL_CMP_HELPER_(GE, >=)
+// Implements the helper function for {ASSERT|EXPECT}_GT with int or
+// enum arguments.
+GTEST_IMPL_CMP_HELPER_(GT, > )
+
+#undef GTEST_IMPL_CMP_HELPER_
+
+// The helper function for {ASSERT|EXPECT}_STREQ.
+AssertionResult CmpHelperSTREQ(const char* lhs_expression,
+                               const char* rhs_expression,
+                               const char* lhs,
+                               const char* rhs) {
+  if (String::CStringEquals(lhs, rhs)) {
+    return AssertionSuccess();
+  }
+
+  return EqFailure(lhs_expression,
+                   rhs_expression,
+                   PrintToString(lhs),
+                   PrintToString(rhs),
+                   false);
+}
+
+// The helper function for {ASSERT|EXPECT}_STRCASEEQ.
+AssertionResult CmpHelperSTRCASEEQ(const char* lhs_expression,
+                                   const char* rhs_expression,
+                                   const char* lhs,
+                                   const char* rhs) {
+  if (String::CaseInsensitiveCStringEquals(lhs, rhs)) {
+    return AssertionSuccess();
+  }
+
+  return EqFailure(lhs_expression,
+                   rhs_expression,
+                   PrintToString(lhs),
+                   PrintToString(rhs),
+                   true);
+}
+
+// The helper function for {ASSERT|EXPECT}_STRNE.
+AssertionResult CmpHelperSTRNE(const char* s1_expression,
+                               const char* s2_expression,
+                               const char* s1,
+                               const char* s2) {
+  if (!String::CStringEquals(s1, s2)) {
+    return AssertionSuccess();
+  } else {
+    return AssertionFailure() << "Expected: (" << s1_expression << ") != ("
+                              << s2_expression << "), actual: \""
+                              << s1 << "\" vs \"" << s2 << "\"";
+  }
+}
+
+// The helper function for {ASSERT|EXPECT}_STRCASENE.
+AssertionResult CmpHelperSTRCASENE(const char* s1_expression,
+                                   const char* s2_expression,
+                                   const char* s1,
+                                   const char* s2) {
+  if (!String::CaseInsensitiveCStringEquals(s1, s2)) {
+    return AssertionSuccess();
+  } else {
+    return AssertionFailure()
+        << "Expected: (" << s1_expression << ") != ("
+        << s2_expression << ") (ignoring case), actual: \""
+        << s1 << "\" vs \"" << s2 << "\"";
+  }
+}
+
+}  // namespace internal
+
+namespace {
+
+// Helper functions for implementing IsSubString() and IsNotSubstring().
+
+// This group of overloaded functions return true if and only if needle
+// is a substring of haystack.  NULL is considered a substring of
+// itself only.
+
+bool IsSubstringPred(const char* needle, const char* haystack) {
+  if (needle == nullptr || haystack == nullptr) return needle == haystack;
+
+  return strstr(haystack, needle) != nullptr;
+}
+
+bool IsSubstringPred(const wchar_t* needle, const wchar_t* haystack) {
+  if (needle == nullptr || haystack == nullptr) return needle == haystack;
+
+  return wcsstr(haystack, needle) != nullptr;
+}
+
+// StringType here can be either ::std::string or ::std::wstring.
+template <typename StringType>
+bool IsSubstringPred(const StringType& needle,
+                     const StringType& haystack) {
+  return haystack.find(needle) != StringType::npos;
+}
+
+// This function implements either IsSubstring() or IsNotSubstring(),
+// depending on the value of the expected_to_be_substring parameter.
+// StringType here can be const char*, const wchar_t*, ::std::string,
+// or ::std::wstring.
+template <typename StringType>
+AssertionResult IsSubstringImpl(
+    bool expected_to_be_substring,
+    const char* needle_expr, const char* haystack_expr,
+    const StringType& needle, const StringType& haystack) {
+  if (IsSubstringPred(needle, haystack) == expected_to_be_substring)
+    return AssertionSuccess();
+
+  const bool is_wide_string = sizeof(needle[0]) > 1;
+  const char* const begin_string_quote = is_wide_string ? "L\"" : "\"";
+  return AssertionFailure()
+      << "Value of: " << needle_expr << "\n"
+      << "  Actual: " << begin_string_quote << needle << "\"\n"
+      << "Expected: " << (expected_to_be_substring ? "" : "not ")
+      << "a substring of " << haystack_expr << "\n"
+      << "Which is: " << begin_string_quote << haystack << "\"";
+}
+
+}  // namespace
+
+// IsSubstring() and IsNotSubstring() check whether needle is a
+// substring of haystack (NULL is considered a substring of itself
+// only), and return an appropriate error message when they fail.
+
+AssertionResult IsSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const char* needle, const char* haystack) {
+  return IsSubstringImpl(true, needle_expr, haystack_expr, needle, haystack);
+}
+
+AssertionResult IsSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const wchar_t* needle, const wchar_t* haystack) {
+  return IsSubstringImpl(true, needle_expr, haystack_expr, needle, haystack);
+}
+
+AssertionResult IsNotSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const char* needle, const char* haystack) {
+  return IsSubstringImpl(false, needle_expr, haystack_expr, needle, haystack);
+}
+
+AssertionResult IsNotSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const wchar_t* needle, const wchar_t* haystack) {
+  return IsSubstringImpl(false, needle_expr, haystack_expr, needle, haystack);
+}
+
+AssertionResult IsSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const ::std::string& needle, const ::std::string& haystack) {
+  return IsSubstringImpl(true, needle_expr, haystack_expr, needle, haystack);
+}
+
+AssertionResult IsNotSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const ::std::string& needle, const ::std::string& haystack) {
+  return IsSubstringImpl(false, needle_expr, haystack_expr, needle, haystack);
+}
+
+#if GTEST_HAS_STD_WSTRING
+AssertionResult IsSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const ::std::wstring& needle, const ::std::wstring& haystack) {
+  return IsSubstringImpl(true, needle_expr, haystack_expr, needle, haystack);
+}
+
+AssertionResult IsNotSubstring(
+    const char* needle_expr, const char* haystack_expr,
+    const ::std::wstring& needle, const ::std::wstring& haystack) {
+  return IsSubstringImpl(false, needle_expr, haystack_expr, needle, haystack);
+}
+#endif  // GTEST_HAS_STD_WSTRING
+
+namespace internal {
+
+#if GTEST_OS_WINDOWS
+
+namespace {
+
+// Helper function for IsHRESULT{SuccessFailure} predicates
+AssertionResult HRESULTFailureHelper(const char* expr,
+                                     const char* expected,
+                                     long hr) {  // NOLINT
+# if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_TV_TITLE
+
+  // Windows CE doesn't support FormatMessage.
+  const char error_text[] = "";
+
+# else
+
+  // Looks up the human-readable system message for the HRESULT code
+  // and since we're not passing any params to FormatMessage, we don't
+  // want inserts expanded.
+  const DWORD kFlags = FORMAT_MESSAGE_FROM_SYSTEM |
+                       FORMAT_MESSAGE_IGNORE_INSERTS;
+  const DWORD kBufSize = 4096;
+  // Gets the system's human readable message string for this HRESULT.
+  char error_text[kBufSize] = { '\0' };
+  DWORD message_length = ::FormatMessageA(kFlags,
+                                          0,   // no source, we're asking system
+                                          static_cast<DWORD>(hr),  // the error
+                                          0,   // no line width restrictions
+                                          error_text,  // output buffer
+                                          kBufSize,    // buf size
+                                          nullptr);  // no arguments for inserts
+  // Trims tailing white space (FormatMessage leaves a trailing CR-LF)
+  for (; message_length && IsSpace(error_text[message_length - 1]);
+          --message_length) {
+    error_text[message_length - 1] = '\0';
+  }
+
+# endif  // GTEST_OS_WINDOWS_MOBILE
+
+  const std::string error_hex("0x" + String::FormatHexInt(hr));
+  return ::testing::AssertionFailure()
+      << "Expected: " << expr << " " << expected << ".\n"
+      << "  Actual: " << error_hex << " " << error_text << "\n";
+}
+
+}  // namespace
+
+AssertionResult IsHRESULTSuccess(const char* expr, long hr) {  // NOLINT
+  if (SUCCEEDED(hr)) {
+    return AssertionSuccess();
+  }
+  return HRESULTFailureHelper(expr, "succeeds", hr);
+}
+
+AssertionResult IsHRESULTFailure(const char* expr, long hr) {  // NOLINT
+  if (FAILED(hr)) {
+    return AssertionSuccess();
+  }
+  return HRESULTFailureHelper(expr, "fails", hr);
+}
+
+#endif  // GTEST_OS_WINDOWS
+
+// Utility functions for encoding Unicode text (wide strings) in
+// UTF-8.
+
+// A Unicode code-point can have up to 21 bits, and is encoded in UTF-8
+// like this:
+//
+// Code-point length   Encoding
+//   0 -  7 bits       0xxxxxxx
+//   8 - 11 bits       110xxxxx 10xxxxxx
+//  12 - 16 bits       1110xxxx 10xxxxxx 10xxxxxx
+//  17 - 21 bits       11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+
+// The maximum code-point a one-byte UTF-8 sequence can represent.
+const UInt32 kMaxCodePoint1 = (static_cast<UInt32>(1) <<  7) - 1;
+
+// The maximum code-point a two-byte UTF-8 sequence can represent.
+const UInt32 kMaxCodePoint2 = (static_cast<UInt32>(1) << (5 + 6)) - 1;
+
+// The maximum code-point a three-byte UTF-8 sequence can represent.
+const UInt32 kMaxCodePoint3 = (static_cast<UInt32>(1) << (4 + 2*6)) - 1;
+
+// The maximum code-point a four-byte UTF-8 sequence can represent.
+const UInt32 kMaxCodePoint4 = (static_cast<UInt32>(1) << (3 + 3*6)) - 1;
+
+// Chops off the n lowest bits from a bit pattern.  Returns the n
+// lowest bits.  As a side effect, the original bit pattern will be
+// shifted to the right by n bits.
+inline UInt32 ChopLowBits(UInt32* bits, int n) {
+  const UInt32 low_bits = *bits & ((static_cast<UInt32>(1) << n) - 1);
+  *bits >>= n;
+  return low_bits;
+}
+
+// Converts a Unicode code point to a narrow string in UTF-8 encoding.
+// code_point parameter is of type UInt32 because wchar_t may not be
+// wide enough to contain a code point.
+// If the code_point is not a valid Unicode code point
+// (i.e. outside of Unicode range U+0 to U+10FFFF) it will be converted
+// to "(Invalid Unicode 0xXXXXXXXX)".
+std::string CodePointToUtf8(UInt32 code_point) {
+  if (code_point > kMaxCodePoint4) {
+    return "(Invalid Unicode 0x" + String::FormatHexUInt32(code_point) + ")";
+  }
+
+  char str[5];  // Big enough for the largest valid code point.
+  if (code_point <= kMaxCodePoint1) {
+    str[1] = '\0';
+    str[0] = static_cast<char>(code_point);                          // 0xxxxxxx
+  } else if (code_point <= kMaxCodePoint2) {
+    str[2] = '\0';
+    str[1] = static_cast<char>(0x80 | ChopLowBits(&code_point, 6));  // 10xxxxxx
+    str[0] = static_cast<char>(0xC0 | code_point);                   // 110xxxxx
+  } else if (code_point <= kMaxCodePoint3) {
+    str[3] = '\0';
+    str[2] = static_cast<char>(0x80 | ChopLowBits(&code_point, 6));  // 10xxxxxx
+    str[1] = static_cast<char>(0x80 | ChopLowBits(&code_point, 6));  // 10xxxxxx
+    str[0] = static_cast<char>(0xE0 | code_point);                   // 1110xxxx
+  } else {  // code_point <= kMaxCodePoint4
+    str[4] = '\0';
+    str[3] = static_cast<char>(0x80 | ChopLowBits(&code_point, 6));  // 10xxxxxx
+    str[2] = static_cast<char>(0x80 | ChopLowBits(&code_point, 6));  // 10xxxxxx
+    str[1] = static_cast<char>(0x80 | ChopLowBits(&code_point, 6));  // 10xxxxxx
+    str[0] = static_cast<char>(0xF0 | code_point);                   // 11110xxx
+  }
+  return str;
+}
+
+// The following two functions only make sense if the system
+// uses UTF-16 for wide string encoding. All supported systems
+// with 16 bit wchar_t (Windows, Cygwin) do use UTF-16.
+
+// Determines if the arguments constitute UTF-16 surrogate pair
+// and thus should be combined into a single Unicode code point
+// using CreateCodePointFromUtf16SurrogatePair.
+inline bool IsUtf16SurrogatePair(wchar_t first, wchar_t second) {
+  return sizeof(wchar_t) == 2 &&
+      (first & 0xFC00) == 0xD800 && (second & 0xFC00) == 0xDC00;
+}
+
+// Creates a Unicode code point from UTF16 surrogate pair.
+inline UInt32 CreateCodePointFromUtf16SurrogatePair(wchar_t first,
+                                                    wchar_t second) {
+  const auto first_u = static_cast<UInt32>(first);
+  const auto second_u = static_cast<UInt32>(second);
+  const UInt32 mask = (1 << 10) - 1;
+  return (sizeof(wchar_t) == 2)
+             ? (((first_u & mask) << 10) | (second_u & mask)) + 0x10000
+             :
+             // This function should not be called when the condition is
+             // false, but we provide a sensible default in case it is.
+             first_u;
+}
+
+// Converts a wide string to a narrow string in UTF-8 encoding.
+// The wide string is assumed to have the following encoding:
+//   UTF-16 if sizeof(wchar_t) == 2 (on Windows, Cygwin)
+//   UTF-32 if sizeof(wchar_t) == 4 (on Linux)
+// Parameter str points to a null-terminated wide string.
+// Parameter num_chars may additionally limit the number
+// of wchar_t characters processed. -1 is used when the entire string
+// should be processed.
+// If the string contains code points that are not valid Unicode code points
+// (i.e. outside of Unicode range U+0 to U+10FFFF) they will be output
+// as '(Invalid Unicode 0xXXXXXXXX)'. If the string is in UTF16 encoding
+// and contains invalid UTF-16 surrogate pairs, values in those pairs
+// will be encoded as individual Unicode characters from Basic Normal Plane.
+std::string WideStringToUtf8(const wchar_t* str, int num_chars) {
+  if (num_chars == -1)
+    num_chars = static_cast<int>(wcslen(str));
+
+  ::std::stringstream stream;
+  for (int i = 0; i < num_chars; ++i) {
+    UInt32 unicode_code_point;
+
+    if (str[i] == L'\0') {
+      break;
+    } else if (i + 1 < num_chars && IsUtf16SurrogatePair(str[i], str[i + 1])) {
+      unicode_code_point = CreateCodePointFromUtf16SurrogatePair(str[i],
+                                                                 str[i + 1]);
+      i++;
+    } else {
+      unicode_code_point = static_cast<UInt32>(str[i]);
+    }
+
+    stream << CodePointToUtf8(unicode_code_point);
+  }
+  return StringStreamToString(&stream);
+}
+
+// Converts a wide C string to an std::string using the UTF-8 encoding.
+// NULL will be converted to "(null)".
+std::string String::ShowWideCString(const wchar_t * wide_c_str) {
+  if (wide_c_str == nullptr) return "(null)";
+
+  return internal::WideStringToUtf8(wide_c_str, -1);
+}
+
+// Compares two wide C strings.  Returns true if and only if they have the
+// same content.
+//
+// Unlike wcscmp(), this function can handle NULL argument(s).  A NULL
+// C string is considered different to any non-NULL C string,
+// including the empty string.
+bool String::WideCStringEquals(const wchar_t * lhs, const wchar_t * rhs) {
+  if (lhs == nullptr) return rhs == nullptr;
+
+  if (rhs == nullptr) return false;
+
+  return wcscmp(lhs, rhs) == 0;
+}
+
+// Helper function for *_STREQ on wide strings.
+AssertionResult CmpHelperSTREQ(const char* lhs_expression,
+                               const char* rhs_expression,
+                               const wchar_t* lhs,
+                               const wchar_t* rhs) {
+  if (String::WideCStringEquals(lhs, rhs)) {
+    return AssertionSuccess();
+  }
+
+  return EqFailure(lhs_expression,
+                   rhs_expression,
+                   PrintToString(lhs),
+                   PrintToString(rhs),
+                   false);
+}
+
+// Helper function for *_STRNE on wide strings.
+AssertionResult CmpHelperSTRNE(const char* s1_expression,
+                               const char* s2_expression,
+                               const wchar_t* s1,
+                               const wchar_t* s2) {
+  if (!String::WideCStringEquals(s1, s2)) {
+    return AssertionSuccess();
+  }
+
+  return AssertionFailure() << "Expected: (" << s1_expression << ") != ("
+                            << s2_expression << "), actual: "
+                            << PrintToString(s1)
+                            << " vs " << PrintToString(s2);
+}
+
+// Compares two C strings, ignoring case.  Returns true if and only if they have
+// the same content.
+//
+// Unlike strcasecmp(), this function can handle NULL argument(s).  A
+// NULL C string is considered different to any non-NULL C string,
+// including the empty string.
+bool String::CaseInsensitiveCStringEquals(const char * lhs, const char * rhs) {
+  if (lhs == nullptr) return rhs == nullptr;
+  if (rhs == nullptr) return false;
+  return posix::StrCaseCmp(lhs, rhs) == 0;
+}
+
+// Compares two wide C strings, ignoring case.  Returns true if and only if they
+// have the same content.
+//
+// Unlike wcscasecmp(), this function can handle NULL argument(s).
+// A NULL C string is considered different to any non-NULL wide C string,
+// including the empty string.
+// NB: The implementations on different platforms slightly differ.
+// On windows, this method uses _wcsicmp which compares according to LC_CTYPE
+// environment variable. On GNU platform this method uses wcscasecmp
+// which compares according to LC_CTYPE category of the current locale.
+// On MacOS X, it uses towlower, which also uses LC_CTYPE category of the
+// current locale.
+bool String::CaseInsensitiveWideCStringEquals(const wchar_t* lhs,
+                                              const wchar_t* rhs) {
+  if (lhs == nullptr) return rhs == nullptr;
+
+  if (rhs == nullptr) return false;
+
+#if GTEST_OS_WINDOWS
+  return _wcsicmp(lhs, rhs) == 0;
+#elif GTEST_OS_LINUX && !GTEST_OS_LINUX_ANDROID
+  return wcscasecmp(lhs, rhs) == 0;
+#else
+  // Android, Mac OS X and Cygwin don't define wcscasecmp.
+  // Other unknown OSes may not define it either.
+  wint_t left, right;
+  do {
+    left = towlower(static_cast<wint_t>(*lhs++));
+    right = towlower(static_cast<wint_t>(*rhs++));
+  } while (left && left == right);
+  return left == right;
+#endif  // OS selector
+}
+
+// Returns true if and only if str ends with the given suffix, ignoring case.
+// Any string is considered to end with an empty suffix.
+bool String::EndsWithCaseInsensitive(
+    const std::string& str, const std::string& suffix) {
+  const size_t str_len = str.length();
+  const size_t suffix_len = suffix.length();
+  return (str_len >= suffix_len) &&
+         CaseInsensitiveCStringEquals(str.c_str() + str_len - suffix_len,
+                                      suffix.c_str());
+}
+
+// Formats an int value as "%02d".
+std::string String::FormatIntWidth2(int value) {
+  std::stringstream ss;
+  ss << std::setfill('0') << std::setw(2) << value;
+  return ss.str();
+}
+
+// Formats an int value as "%X".
+std::string String::FormatHexUInt32(UInt32 value) {
+  std::stringstream ss;
+  ss << std::hex << std::uppercase << value;
+  return ss.str();
+}
+
+// Formats an int value as "%X".
+std::string String::FormatHexInt(int value) {
+  return FormatHexUInt32(static_cast<UInt32>(value));
+}
+
+// Formats a byte as "%02X".
+std::string String::FormatByte(unsigned char value) {
+  std::stringstream ss;
+  ss << std::setfill('0') << std::setw(2) << std::hex << std::uppercase
+     << static_cast<unsigned int>(value);
+  return ss.str();
+}
+
+// Converts the buffer in a stringstream to an std::string, converting NUL
+// bytes to "\\0" along the way.
+std::string StringStreamToString(::std::stringstream* ss) {
+  const ::std::string& str = ss->str();
+  const char* const start = str.c_str();
+  const char* const end = start + str.length();
+
+  std::string result;
+  result.reserve(static_cast<size_t>(2 * (end - start)));
+  for (const char* ch = start; ch != end; ++ch) {
+    if (*ch == '\0') {
+      result += "\\0";  // Replaces NUL with "\\0";
+    } else {
+      result += *ch;
+    }
+  }
+
+  return result;
+}
+
+// Appends the user-supplied message to the Google-Test-generated message.
+std::string AppendUserMessage(const std::string& gtest_msg,
+                              const Message& user_msg) {
+  // Appends the user message if it's non-empty.
+  const std::string user_msg_string = user_msg.GetString();
+  if (user_msg_string.empty()) {
+    return gtest_msg;
+  }
+
+  return gtest_msg + "\n" + user_msg_string;
+}
+
+}  // namespace internal
+
+// class TestResult
+
+// Creates an empty TestResult.
+TestResult::TestResult()
+    : death_test_count_(0), start_timestamp_(0), elapsed_time_(0) {}
+
+// D'tor.
+TestResult::~TestResult() {
+}
+
+// Returns the i-th test part result among all the results. i can
+// range from 0 to total_part_count() - 1. If i is not in that range,
+// aborts the program.
+const TestPartResult& TestResult::GetTestPartResult(int i) const {
+  if (i < 0 || i >= total_part_count())
+    internal::posix::Abort();
+  return test_part_results_.at(static_cast<size_t>(i));
+}
+
+// Returns the i-th test property. i can range from 0 to
+// test_property_count() - 1. If i is not in that range, aborts the
+// program.
+const TestProperty& TestResult::GetTestProperty(int i) const {
+  if (i < 0 || i >= test_property_count())
+    internal::posix::Abort();
+  return test_properties_.at(static_cast<size_t>(i));
+}
+
+// Clears the test part results.
+void TestResult::ClearTestPartResults() {
+  test_part_results_.clear();
+}
+
+// Adds a test part result to the list.
+void TestResult::AddTestPartResult(const TestPartResult& test_part_result) {
+  test_part_results_.push_back(test_part_result);
+}
+
+// Adds a test property to the list. If a property with the same key as the
+// supplied property is already represented, the value of this test_property
+// replaces the old value for that key.
+void TestResult::RecordProperty(const std::string& xml_element,
+                                const TestProperty& test_property) {
+  if (!ValidateTestProperty(xml_element, test_property)) {
+    return;
+  }
+  internal::MutexLock lock(&test_properites_mutex_);
+  const std::vector<TestProperty>::iterator property_with_matching_key =
+      std::find_if(test_properties_.begin(), test_properties_.end(),
+                   internal::TestPropertyKeyIs(test_property.key()));
+  if (property_with_matching_key == test_properties_.end()) {
+    test_properties_.push_back(test_property);
+    return;
+  }
+  property_with_matching_key->SetValue(test_property.value());
+}
+
+// The list of reserved attributes used in the <testsuites> element of XML
+// output.
+static const char* const kReservedTestSuitesAttributes[] = {
+  "disabled",
+  "errors",
+  "failures",
+  "name",
+  "random_seed",
+  "tests",
+  "time",
+  "timestamp"
+};
+
+// The list of reserved attributes used in the <testsuite> element of XML
+// output.
+static const char* const kReservedTestSuiteAttributes[] = {
+    "disabled", "errors", "failures", "name", "tests", "time", "timestamp"};
+
+// The list of reserved attributes used in the <testcase> element of XML output.
+static const char* const kReservedTestCaseAttributes[] = {
+    "classname",   "name", "status", "time",  "type_param",
+    "value_param", "file", "line"};
+
+// Use a slightly different set for allowed output to ensure existing tests can
+// still RecordProperty("result") or "RecordProperty(timestamp")
+static const char* const kReservedOutputTestCaseAttributes[] = {
+    "classname",   "name", "status", "time",   "type_param",
+    "value_param", "file", "line",   "result", "timestamp"};
+
+template <int kSize>
+std::vector<std::string> ArrayAsVector(const char* const (&array)[kSize]) {
+  return std::vector<std::string>(array, array + kSize);
+}
+
+static std::vector<std::string> GetReservedAttributesForElement(
+    const std::string& xml_element) {
+  if (xml_element == "testsuites") {
+    return ArrayAsVector(kReservedTestSuitesAttributes);
+  } else if (xml_element == "testsuite") {
+    return ArrayAsVector(kReservedTestSuiteAttributes);
+  } else if (xml_element == "testcase") {
+    return ArrayAsVector(kReservedTestCaseAttributes);
+  } else {
+    GTEST_CHECK_(false) << "Unrecognized xml_element provided: " << xml_element;
+  }
+  // This code is unreachable but some compilers may not realizes that.
+  return std::vector<std::string>();
+}
+
+// TODO(jdesprez): Merge the two getReserved attributes once skip is improved
+static std::vector<std::string> GetReservedOutputAttributesForElement(
+    const std::string& xml_element) {
+  if (xml_element == "testsuites") {
+    return ArrayAsVector(kReservedTestSuitesAttributes);
+  } else if (xml_element == "testsuite") {
+    return ArrayAsVector(kReservedTestSuiteAttributes);
+  } else if (xml_element == "testcase") {
+    return ArrayAsVector(kReservedOutputTestCaseAttributes);
+  } else {
+    GTEST_CHECK_(false) << "Unrecognized xml_element provided: " << xml_element;
+  }
+  // This code is unreachable but some compilers may not realizes that.
+  return std::vector<std::string>();
+}
+
+static std::string FormatWordList(const std::vector<std::string>& words) {
+  Message word_list;
+  for (size_t i = 0; i < words.size(); ++i) {
+    if (i > 0 && words.size() > 2) {
+      word_list << ", ";
+    }
+    if (i == words.size() - 1) {
+      word_list << "and ";
+    }
+    word_list << "'" << words[i] << "'";
+  }
+  return word_list.GetString();
+}
+
+static bool ValidateTestPropertyName(
+    const std::string& property_name,
+    const std::vector<std::string>& reserved_names) {
+  if (std::find(reserved_names.begin(), reserved_names.end(), property_name) !=
+          reserved_names.end()) {
+    ADD_FAILURE() << "Reserved key used in RecordProperty(): " << property_name
+                  << " (" << FormatWordList(reserved_names)
+                  << " are reserved by " << GTEST_NAME_ << ")";
+    return false;
+  }
+  return true;
+}
+
+// Adds a failure if the key is a reserved attribute of the element named
+// xml_element.  Returns true if the property is valid.
+bool TestResult::ValidateTestProperty(const std::string& xml_element,
+                                      const TestProperty& test_property) {
+  return ValidateTestPropertyName(test_property.key(),
+                                  GetReservedAttributesForElement(xml_element));
+}
+
+// Clears the object.
+void TestResult::Clear() {
+  test_part_results_.clear();
+  test_properties_.clear();
+  death_test_count_ = 0;
+  elapsed_time_ = 0;
+}
+
+// Returns true off the test part was skipped.
+static bool TestPartSkipped(const TestPartResult& result) {
+  return result.skipped();
+}
+
+// Returns true if and only if the test was skipped.
+bool TestResult::Skipped() const {
+  return !Failed() && CountIf(test_part_results_, TestPartSkipped) > 0;
+}
+
+// Returns true if and only if the test failed.
+bool TestResult::Failed() const {
+  for (int i = 0; i < total_part_count(); ++i) {
+    if (GetTestPartResult(i).failed())
+      return true;
+  }
+  return false;
+}
+
+// Returns true if and only if the test part fatally failed.
+static bool TestPartFatallyFailed(const TestPartResult& result) {
+  return result.fatally_failed();
+}
+
+// Returns true if and only if the test fatally failed.
+bool TestResult::HasFatalFailure() const {
+  return CountIf(test_part_results_, TestPartFatallyFailed) > 0;
+}
+
+// Returns true if and only if the test part non-fatally failed.
+static bool TestPartNonfatallyFailed(const TestPartResult& result) {
+  return result.nonfatally_failed();
+}
+
+// Returns true if and only if the test has a non-fatal failure.
+bool TestResult::HasNonfatalFailure() const {
+  return CountIf(test_part_results_, TestPartNonfatallyFailed) > 0;
+}
+
+// Gets the number of all test parts.  This is the sum of the number
+// of successful test parts and the number of failed test parts.
+int TestResult::total_part_count() const {
+  return static_cast<int>(test_part_results_.size());
+}
+
+// Returns the number of the test properties.
+int TestResult::test_property_count() const {
+  return static_cast<int>(test_properties_.size());
+}
+
+// class Test
+
+// Creates a Test object.
+
+// The c'tor saves the states of all flags.
+Test::Test()
+    : gtest_flag_saver_(new GTEST_FLAG_SAVER_) {
+}
+
+// The d'tor restores the states of all flags.  The actual work is
+// done by the d'tor of the gtest_flag_saver_ field, and thus not
+// visible here.
+Test::~Test() {
+}
+
+// Sets up the test fixture.
+//
+// A sub-class may override this.
+void Test::SetUp() {
+}
+
+// Tears down the test fixture.
+//
+// A sub-class may override this.
+void Test::TearDown() {
+}
+
+// Allows user supplied key value pairs to be recorded for later output.
+void Test::RecordProperty(const std::string& key, const std::string& value) {
+  UnitTest::GetInstance()->RecordProperty(key, value);
+}
+
+// Allows user supplied key value pairs to be recorded for later output.
+void Test::RecordProperty(const std::string& key, int value) {
+  Message value_message;
+  value_message << value;
+  RecordProperty(key, value_message.GetString().c_str());
+}
+
+namespace internal {
+
+void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
+                                    const std::string& message) {
+  // This function is a friend of UnitTest and as such has access to
+  // AddTestPartResult.
+  UnitTest::GetInstance()->AddTestPartResult(
+      result_type,
+      nullptr,  // No info about the source file where the exception occurred.
+      -1,       // We have no info on which line caused the exception.
+      message,
+      "");  // No stack trace, either.
+}
+
+}  // namespace internal
+
+// Google Test requires all tests in the same test suite to use the same test
+// fixture class.  This function checks if the current test has the
+// same fixture class as the first test in the current test suite.  If
+// yes, it returns true; otherwise it generates a Google Test failure and
+// returns false.
+bool Test::HasSameFixtureClass() {
+  internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
+  const TestSuite* const test_suite = impl->current_test_suite();
+
+  // Info about the first test in the current test suite.
+  const TestInfo* const first_test_info = test_suite->test_info_list()[0];
+  const internal::TypeId first_fixture_id = first_test_info->fixture_class_id_;
+  const char* const first_test_name = first_test_info->name();
+
+  // Info about the current test.
+  const TestInfo* const this_test_info = impl->current_test_info();
+  const internal::TypeId this_fixture_id = this_test_info->fixture_class_id_;
+  const char* const this_test_name = this_test_info->name();
+
+  if (this_fixture_id != first_fixture_id) {
+    // Is the first test defined using TEST?
+    const bool first_is_TEST = first_fixture_id == internal::GetTestTypeId();
+    // Is this test defined using TEST?
+    const bool this_is_TEST = this_fixture_id == internal::GetTestTypeId();
+
+    if (first_is_TEST || this_is_TEST) {
+      // Both TEST and TEST_F appear in same test suite, which is incorrect.
+      // Tell the user how to fix this.
+
+      // Gets the name of the TEST and the name of the TEST_F.  Note
+      // that first_is_TEST and this_is_TEST cannot both be true, as
+      // the fixture IDs are different for the two tests.
+      const char* const TEST_name =
+          first_is_TEST ? first_test_name : this_test_name;
+      const char* const TEST_F_name =
+          first_is_TEST ? this_test_name : first_test_name;
+
+      ADD_FAILURE()
+          << "All tests in the same test suite must use the same test fixture\n"
+          << "class, so mixing TEST_F and TEST in the same test suite is\n"
+          << "illegal.  In test suite " << this_test_info->test_suite_name()
+          << ",\n"
+          << "test " << TEST_F_name << " is defined using TEST_F but\n"
+          << "test " << TEST_name << " is defined using TEST.  You probably\n"
+          << "want to change the TEST to TEST_F or move it to another test\n"
+          << "case.";
+    } else {
+      // Two fixture classes with the same name appear in two different
+      // namespaces, which is not allowed. Tell the user how to fix this.
+      ADD_FAILURE()
+          << "All tests in the same test suite must use the same test fixture\n"
+          << "class.  However, in test suite "
+          << this_test_info->test_suite_name() << ",\n"
+          << "you defined test " << first_test_name << " and test "
+          << this_test_name << "\n"
+          << "using two different test fixture classes.  This can happen if\n"
+          << "the two classes are from different namespaces or translation\n"
+          << "units and have the same name.  You should probably rename one\n"
+          << "of the classes to put the tests into different test suites.";
+    }
+    return false;
+  }
+
+  return true;
+}
+
+#if GTEST_HAS_SEH
+
+// Adds an "exception thrown" fatal failure to the current test.  This
+// function returns its result via an output parameter pointer because VC++
+// prohibits creation of objects with destructors on stack in functions
+// using __try (see error C2712).
+static std::string* FormatSehExceptionMessage(DWORD exception_code,
+                                              const char* location) {
+  Message message;
+  message << "SEH exception with code 0x" << std::setbase(16) <<
+    exception_code << std::setbase(10) << " thrown in " << location << ".";
+
+  return new std::string(message.GetString());
+}
+
+#endif  // GTEST_HAS_SEH
+
+namespace internal {
+
+#if GTEST_HAS_EXCEPTIONS
+
+// Adds an "exception thrown" fatal failure to the current test.
+static std::string FormatCxxExceptionMessage(const char* description,
+                                             const char* location) {
+  Message message;
+  if (description != nullptr) {
+    message << "C++ exception with description \"" << description << "\"";
+  } else {
+    message << "Unknown C++ exception";
+  }
+  message << " thrown in " << location << ".";
+
+  return message.GetString();
+}
+
+static std::string PrintTestPartResultToString(
+    const TestPartResult& test_part_result);
+
+GoogleTestFailureException::GoogleTestFailureException(
+    const TestPartResult& failure)
+    : ::std::runtime_error(PrintTestPartResultToString(failure).c_str()) {}
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
+// We put these helper functions in the internal namespace as IBM's xlC
+// compiler rejects the code if they were declared static.
+
+// Runs the given method and handles SEH exceptions it throws, when
+// SEH is supported; returns the 0-value for type Result in case of an
+// SEH exception.  (Microsoft compilers cannot handle SEH and C++
+// exceptions in the same function.  Therefore, we provide a separate
+// wrapper function for handling SEH exceptions.)
+template <class T, typename Result>
+Result HandleSehExceptionsInMethodIfSupported(
+    T* object, Result (T::*method)(), const char* location) {
+#if GTEST_HAS_SEH
+  __try {
+    return (object->*method)();
+  } __except (internal::UnitTestOptions::GTestShouldProcessSEH(  // NOLINT
+      GetExceptionCode())) {
+    // We create the exception message on the heap because VC++ prohibits
+    // creation of objects with destructors on stack in functions using __try
+    // (see error C2712).
+    std::string* exception_message = FormatSehExceptionMessage(
+        GetExceptionCode(), location);
+    internal::ReportFailureInUnknownLocation(TestPartResult::kFatalFailure,
+                                             *exception_message);
+    delete exception_message;
+    return static_cast<Result>(0);
+  }
+#else
+  (void)location;
+  return (object->*method)();
+#endif  // GTEST_HAS_SEH
+}
+
+// Runs the given method and catches and reports C++ and/or SEH-style
+// exceptions, if they are supported; returns the 0-value for type
+// Result in case of an SEH exception.
+template <class T, typename Result>
+Result HandleExceptionsInMethodIfSupported(
+    T* object, Result (T::*method)(), const char* location) {
+  // NOTE: The user code can affect the way in which Google Test handles
+  // exceptions by setting GTEST_FLAG(catch_exceptions), but only before
+  // RUN_ALL_TESTS() starts. It is technically possible to check the flag
+  // after the exception is caught and either report or re-throw the
+  // exception based on the flag's value:
+  //
+  // try {
+  //   // Perform the test method.
+  // } catch (...) {
+  //   if (GTEST_FLAG(catch_exceptions))
+  //     // Report the exception as failure.
+  //   else
+  //     throw;  // Re-throws the original exception.
+  // }
+  //
+  // However, the purpose of this flag is to allow the program to drop into
+  // the debugger when the exception is thrown. On most platforms, once the
+  // control enters the catch block, the exception origin information is
+  // lost and the debugger will stop the program at the point of the
+  // re-throw in this function -- instead of at the point of the original
+  // throw statement in the code under test.  For this reason, we perform
+  // the check early, sacrificing the ability to affect Google Test's
+  // exception handling in the method where the exception is thrown.
+  if (internal::GetUnitTestImpl()->catch_exceptions()) {
+#if GTEST_HAS_EXCEPTIONS
+    try {
+      return HandleSehExceptionsInMethodIfSupported(object, method, location);
+    } catch (const AssertionException&) {  // NOLINT
+      // This failure was reported already.
+    } catch (const internal::GoogleTestFailureException&) {  // NOLINT
+      // This exception type can only be thrown by a failed Google
+      // Test assertion with the intention of letting another testing
+      // framework catch it.  Therefore we just re-throw it.
+      throw;
+    } catch (const std::exception& e) {  // NOLINT
+      internal::ReportFailureInUnknownLocation(
+          TestPartResult::kFatalFailure,
+          FormatCxxExceptionMessage(e.what(), location));
+    } catch (...) {  // NOLINT
+      internal::ReportFailureInUnknownLocation(
+          TestPartResult::kFatalFailure,
+          FormatCxxExceptionMessage(nullptr, location));
+    }
+    return static_cast<Result>(0);
+#else
+    return HandleSehExceptionsInMethodIfSupported(object, method, location);
+#endif  // GTEST_HAS_EXCEPTIONS
+  } else {
+    return (object->*method)();
+  }
+}
+
+}  // namespace internal
+
+// Runs the test and updates the test result.
+void Test::Run() {
+  if (!HasSameFixtureClass()) return;
+
+  internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
+  impl->os_stack_trace_getter()->UponLeavingGTest();
+  internal::HandleExceptionsInMethodIfSupported(this, &Test::SetUp, "SetUp()");
+  // We will run the test only if SetUp() was successful and didn't call
+  // GTEST_SKIP().
+  if (!HasFatalFailure() && !IsSkipped()) {
+    impl->os_stack_trace_getter()->UponLeavingGTest();
+    internal::HandleExceptionsInMethodIfSupported(
+        this, &Test::TestBody, "the test body");
+  }
+
+  // However, we want to clean up as much as possible.  Hence we will
+  // always call TearDown(), even if SetUp() or the test body has
+  // failed.
+  impl->os_stack_trace_getter()->UponLeavingGTest();
+  internal::HandleExceptionsInMethodIfSupported(
+      this, &Test::TearDown, "TearDown()");
+}
+
+// Returns true if and only if the current test has a fatal failure.
+bool Test::HasFatalFailure() {
+  return internal::GetUnitTestImpl()->current_test_result()->HasFatalFailure();
+}
+
+// Returns true if and only if the current test has a non-fatal failure.
+bool Test::HasNonfatalFailure() {
+  return internal::GetUnitTestImpl()->current_test_result()->
+      HasNonfatalFailure();
+}
+
+// Returns true if and only if the current test was skipped.
+bool Test::IsSkipped() {
+  return internal::GetUnitTestImpl()->current_test_result()->Skipped();
+}
+
+// class TestInfo
+
+// Constructs a TestInfo object. It assumes ownership of the test factory
+// object.
+TestInfo::TestInfo(const std::string& a_test_suite_name,
+                   const std::string& a_name, const char* a_type_param,
+                   const char* a_value_param,
+                   internal::CodeLocation a_code_location,
+                   internal::TypeId fixture_class_id,
+                   internal::TestFactoryBase* factory)
+    : test_suite_name_(a_test_suite_name),
+      name_(a_name),
+      type_param_(a_type_param ? new std::string(a_type_param) : nullptr),
+      value_param_(a_value_param ? new std::string(a_value_param) : nullptr),
+      location_(a_code_location),
+      fixture_class_id_(fixture_class_id),
+      should_run_(false),
+      is_disabled_(false),
+      matches_filter_(false),
+      factory_(factory),
+      result_() {}
+
+// Destructs a TestInfo object.
+TestInfo::~TestInfo() { delete factory_; }
+
+namespace internal {
+
+// Creates a new TestInfo object and registers it with Google Test;
+// returns the created object.
+//
+// Arguments:
+//
+//   test_suite_name:   name of the test suite
+//   name:             name of the test
+//   type_param:       the name of the test's type parameter, or NULL if
+//                     this is not a typed or a type-parameterized test.
+//   value_param:      text representation of the test's value parameter,
+//                     or NULL if this is not a value-parameterized test.
+//   code_location:    code location where the test is defined
+//   fixture_class_id: ID of the test fixture class
+//   set_up_tc:        pointer to the function that sets up the test suite
+//   tear_down_tc:     pointer to the function that tears down the test suite
+//   factory:          pointer to the factory that creates a test object.
+//                     The newly created TestInfo instance will assume
+//                     ownership of the factory object.
+TestInfo* MakeAndRegisterTestInfo(
+    const char* test_suite_name, const char* name, const char* type_param,
+    const char* value_param, CodeLocation code_location,
+    TypeId fixture_class_id, SetUpTestSuiteFunc set_up_tc,
+    TearDownTestSuiteFunc tear_down_tc, TestFactoryBase* factory) {
+  TestInfo* const test_info =
+      new TestInfo(test_suite_name, name, type_param, value_param,
+                   code_location, fixture_class_id, factory);
+  GetUnitTestImpl()->AddTestInfo(set_up_tc, tear_down_tc, test_info);
+  return test_info;
+}
+
+void ReportInvalidTestSuiteType(const char* test_suite_name,
+                                CodeLocation code_location) {
+  Message errors;
+  errors
+      << "Attempted redefinition of test suite " << test_suite_name << ".\n"
+      << "All tests in the same test suite must use the same test fixture\n"
+      << "class.  However, in test suite " << test_suite_name << ", you tried\n"
+      << "to define a test using a fixture class different from the one\n"
+      << "used earlier. This can happen if the two fixture classes are\n"
+      << "from different namespaces and have the same name. You should\n"
+      << "probably rename one of the classes to put the tests into different\n"
+      << "test suites.";
+
+  GTEST_LOG_(ERROR) << FormatFileLocation(code_location.file.c_str(),
+                                          code_location.line)
+                    << " " << errors.GetString();
+}
+}  // namespace internal
+
+namespace {
+
+// A predicate that checks the test name of a TestInfo against a known
+// value.
+//
+// This is used for implementation of the TestSuite class only.  We put
+// it in the anonymous namespace to prevent polluting the outer
+// namespace.
+//
+// TestNameIs is copyable.
+class TestNameIs {
+ public:
+  // Constructor.
+  //
+  // TestNameIs has NO default constructor.
+  explicit TestNameIs(const char* name)
+      : name_(name) {}
+
+  // Returns true if and only if the test name of test_info matches name_.
+  bool operator()(const TestInfo * test_info) const {
+    return test_info && test_info->name() == name_;
+  }
+
+ private:
+  std::string name_;
+};
+
+}  // namespace
+
+namespace internal {
+
+// This method expands all parameterized tests registered with macros TEST_P
+// and INSTANTIATE_TEST_SUITE_P into regular tests and registers those.
+// This will be done just once during the program runtime.
+void UnitTestImpl::RegisterParameterizedTests() {
+  if (!parameterized_tests_registered_) {
+    parameterized_test_registry_.RegisterTests();
+    parameterized_tests_registered_ = true;
+  }
+}
+
+}  // namespace internal
+
+// Creates the test object, runs it, records its result, and then
+// deletes it.
+void TestInfo::Run() {
+  if (!should_run_) return;
+
+  // Tells UnitTest where to store test result.
+  internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
+  impl->set_current_test_info(this);
+
+  TestEventListener* repeater = UnitTest::GetInstance()->listeners().repeater();
+
+  // Notifies the unit test event listeners that a test is about to start.
+  repeater->OnTestStart(*this);
+
+  const TimeInMillis start = internal::GetTimeInMillis();
+
+  impl->os_stack_trace_getter()->UponLeavingGTest();
+
+  // Creates the test object.
+  Test* const test = internal::HandleExceptionsInMethodIfSupported(
+      factory_, &internal::TestFactoryBase::CreateTest,
+      "the test fixture's constructor");
+
+  // Runs the test if the constructor didn't generate a fatal failure or invoke
+  // GTEST_SKIP().
+  // Note that the object will not be null
+  if (!Test::HasFatalFailure() && !Test::IsSkipped()) {
+    // This doesn't throw as all user code that can throw are wrapped into
+    // exception handling code.
+    test->Run();
+  }
+
+  if (test != nullptr) {
+    // Deletes the test object.
+    impl->os_stack_trace_getter()->UponLeavingGTest();
+    internal::HandleExceptionsInMethodIfSupported(
+        test, &Test::DeleteSelf_, "the test fixture's destructor");
+  }
+
+  result_.set_start_timestamp(start);
+  result_.set_elapsed_time(internal::GetTimeInMillis() - start);
+
+  // Notifies the unit test event listener that a test has just finished.
+  repeater->OnTestEnd(*this);
+
+  // Tells UnitTest to stop associating assertion results to this
+  // test.
+  impl->set_current_test_info(nullptr);
+}
+
+// class TestSuite
+
+// Gets the number of successful tests in this test suite.
+int TestSuite::successful_test_count() const {
+  return CountIf(test_info_list_, TestPassed);
+}
+
+// Gets the number of successful tests in this test suite.
+int TestSuite::skipped_test_count() const {
+  return CountIf(test_info_list_, TestSkipped);
+}
+
+// Gets the number of failed tests in this test suite.
+int TestSuite::failed_test_count() const {
+  return CountIf(test_info_list_, TestFailed);
+}
+
+// Gets the number of disabled tests that will be reported in the XML report.
+int TestSuite::reportable_disabled_test_count() const {
+  return CountIf(test_info_list_, TestReportableDisabled);
+}
+
+// Gets the number of disabled tests in this test suite.
+int TestSuite::disabled_test_count() const {
+  return CountIf(test_info_list_, TestDisabled);
+}
+
+// Gets the number of tests to be printed in the XML report.
+int TestSuite::reportable_test_count() const {
+  return CountIf(test_info_list_, TestReportable);
+}
+
+// Get the number of tests in this test suite that should run.
+int TestSuite::test_to_run_count() const {
+  return CountIf(test_info_list_, ShouldRunTest);
+}
+
+// Gets the number of all tests.
+int TestSuite::total_test_count() const {
+  return static_cast<int>(test_info_list_.size());
+}
+
+// Creates a TestSuite with the given name.
+//
+// Arguments:
+//
+//   name:         name of the test suite
+//   a_type_param: the name of the test suite's type parameter, or NULL if
+//                 this is not a typed or a type-parameterized test suite.
+//   set_up_tc:    pointer to the function that sets up the test suite
+//   tear_down_tc: pointer to the function that tears down the test suite
+TestSuite::TestSuite(const char* a_name, const char* a_type_param,
+                     internal::SetUpTestSuiteFunc set_up_tc,
+                     internal::TearDownTestSuiteFunc tear_down_tc)
+    : name_(a_name),
+      type_param_(a_type_param ? new std::string(a_type_param) : nullptr),
+      set_up_tc_(set_up_tc),
+      tear_down_tc_(tear_down_tc),
+      should_run_(false),
+      start_timestamp_(0),
+      elapsed_time_(0) {}
+
+// Destructor of TestSuite.
+TestSuite::~TestSuite() {
+  // Deletes every Test in the collection.
+  ForEach(test_info_list_, internal::Delete<TestInfo>);
+}
+
+// Returns the i-th test among all the tests. i can range from 0 to
+// total_test_count() - 1. If i is not in that range, returns NULL.
+const TestInfo* TestSuite::GetTestInfo(int i) const {
+  const int index = GetElementOr(test_indices_, i, -1);
+  return index < 0 ? nullptr : test_info_list_[static_cast<size_t>(index)];
+}
+
+// Returns the i-th test among all the tests. i can range from 0 to
+// total_test_count() - 1. If i is not in that range, returns NULL.
+TestInfo* TestSuite::GetMutableTestInfo(int i) {
+  const int index = GetElementOr(test_indices_, i, -1);
+  return index < 0 ? nullptr : test_info_list_[static_cast<size_t>(index)];
+}
+
+// Adds a test to this test suite.  Will delete the test upon
+// destruction of the TestSuite object.
+void TestSuite::AddTestInfo(TestInfo* test_info) {
+  test_info_list_.push_back(test_info);
+  test_indices_.push_back(static_cast<int>(test_indices_.size()));
+}
+
+// Runs every test in this TestSuite.
+void TestSuite::Run() {
+  if (!should_run_) return;
+
+  internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
+  impl->set_current_test_suite(this);
+
+  TestEventListener* repeater = UnitTest::GetInstance()->listeners().repeater();
+
+  // Call both legacy and the new API
+  repeater->OnTestSuiteStart(*this);
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI
+  repeater->OnTestCaseStart(*this);
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI
+
+  impl->os_stack_trace_getter()->UponLeavingGTest();
+  internal::HandleExceptionsInMethodIfSupported(
+      this, &TestSuite::RunSetUpTestSuite, "SetUpTestSuite()");
+
+  start_timestamp_ = internal::GetTimeInMillis();
+  for (int i = 0; i < total_test_count(); i++) {
+    GetMutableTestInfo(i)->Run();
+  }
+  elapsed_time_ = internal::GetTimeInMillis() - start_timestamp_;
+
+  impl->os_stack_trace_getter()->UponLeavingGTest();
+  internal::HandleExceptionsInMethodIfSupported(
+      this, &TestSuite::RunTearDownTestSuite, "TearDownTestSuite()");
+
+  // Call both legacy and the new API
+  repeater->OnTestSuiteEnd(*this);
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI
+  repeater->OnTestCaseEnd(*this);
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI
+
+  impl->set_current_test_suite(nullptr);
+}
+
+// Clears the results of all tests in this test suite.
+void TestSuite::ClearResult() {
+  ad_hoc_test_result_.Clear();
+  ForEach(test_info_list_, TestInfo::ClearTestResult);
+}
+
+// Shuffles the tests in this test suite.
+void TestSuite::ShuffleTests(internal::Random* random) {
+  Shuffle(random, &test_indices_);
+}
+
+// Restores the test order to before the first shuffle.
+void TestSuite::UnshuffleTests() {
+  for (size_t i = 0; i < test_indices_.size(); i++) {
+    test_indices_[i] = static_cast<int>(i);
+  }
+}
+
+// Formats a countable noun.  Depending on its quantity, either the
+// singular form or the plural form is used. e.g.
+//
+// FormatCountableNoun(1, "formula", "formuli") returns "1 formula".
+// FormatCountableNoun(5, "book", "books") returns "5 books".
+static std::string FormatCountableNoun(int count,
+                                       const char * singular_form,
+                                       const char * plural_form) {
+  return internal::StreamableToString(count) + " " +
+      (count == 1 ? singular_form : plural_form);
+}
+
+// Formats the count of tests.
+static std::string FormatTestCount(int test_count) {
+  return FormatCountableNoun(test_count, "test", "tests");
+}
+
+// Formats the count of test suites.
+static std::string FormatTestSuiteCount(int test_suite_count) {
+  return FormatCountableNoun(test_suite_count, "test suite", "test suites");
+}
+
+// Converts a TestPartResult::Type enum to human-friendly string
+// representation.  Both kNonFatalFailure and kFatalFailure are translated
+// to "Failure", as the user usually doesn't care about the difference
+// between the two when viewing the test result.
+static const char * TestPartResultTypeToString(TestPartResult::Type type) {
+  switch (type) {
+    case TestPartResult::kSkip:
+      return "Skipped";
+    case TestPartResult::kSuccess:
+      return "Success";
+
+    case TestPartResult::kNonFatalFailure:
+    case TestPartResult::kFatalFailure:
+#ifdef _MSC_VER
+      return "error: ";
+#else
+      return "Failure\n";
+#endif
+    default:
+      return "Unknown result type";
+  }
+}
+
+namespace internal {
+
+// Prints a TestPartResult to an std::string.
+static std::string PrintTestPartResultToString(
+    const TestPartResult& test_part_result) {
+  return (Message()
+          << internal::FormatFileLocation(test_part_result.file_name(),
+                                          test_part_result.line_number())
+          << " " << TestPartResultTypeToString(test_part_result.type())
+          << test_part_result.message()).GetString();
+}
+
+// Prints a TestPartResult.
+static void PrintTestPartResult(const TestPartResult& test_part_result) {
+  const std::string& result =
+      PrintTestPartResultToString(test_part_result);
+  printf("%s\n", result.c_str());
+  fflush(stdout);
+  // If the test program runs in Visual Studio or a debugger, the
+  // following statements add the test part result message to the Output
+  // window such that the user can double-click on it to jump to the
+  // corresponding source code location; otherwise they do nothing.
+#if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MOBILE
+  // We don't call OutputDebugString*() on Windows Mobile, as printing
+  // to stdout is done by OutputDebugString() there already - we don't
+  // want the same message printed twice.
+  ::OutputDebugStringA(result.c_str());
+  ::OutputDebugStringA("\n");
+#endif
+}
+
+// class PrettyUnitTestResultPrinter
+#if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MOBILE && \
+    !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT && !GTEST_OS_WINDOWS_MINGW
+
+// Returns the character attribute for the given color.
+static WORD GetColorAttribute(GTestColor color) {
+  switch (color) {
+    case COLOR_RED:    return FOREGROUND_RED;
+    case COLOR_GREEN:  return FOREGROUND_GREEN;
+    case COLOR_YELLOW: return FOREGROUND_RED | FOREGROUND_GREEN;
+    default:           return 0;
+  }
+}
+
+static int GetBitOffset(WORD color_mask) {
+  if (color_mask == 0) return 0;
+
+  int bitOffset = 0;
+  while ((color_mask & 1) == 0) {
+    color_mask >>= 1;
+    ++bitOffset;
+  }
+  return bitOffset;
+}
+
+static WORD GetNewColor(GTestColor color, WORD old_color_attrs) {
+  // Let's reuse the BG
+  static const WORD background_mask = BACKGROUND_BLUE | BACKGROUND_GREEN |
+                                      BACKGROUND_RED | BACKGROUND_INTENSITY;
+  static const WORD foreground_mask = FOREGROUND_BLUE | FOREGROUND_GREEN |
+                                      FOREGROUND_RED | FOREGROUND_INTENSITY;
+  const WORD existing_bg = old_color_attrs & background_mask;
+
+  WORD new_color =
+      GetColorAttribute(color) | existing_bg | FOREGROUND_INTENSITY;
+  static const int bg_bitOffset = GetBitOffset(background_mask);
+  static const int fg_bitOffset = GetBitOffset(foreground_mask);
+
+  if (((new_color & background_mask) >> bg_bitOffset) ==
+      ((new_color & foreground_mask) >> fg_bitOffset)) {
+    new_color ^= FOREGROUND_INTENSITY;  // invert intensity
+  }
+  return new_color;
+}
+
+#else
+
+// Returns the ANSI color code for the given color.  COLOR_DEFAULT is
+// an invalid input.
+static const char* GetAnsiColorCode(GTestColor color) {
+  switch (color) {
+    case COLOR_RED:     return "1";
+    case COLOR_GREEN:   return "2";
+    case COLOR_YELLOW:  return "3";
+    default:
+      return nullptr;
+  }
+}
+
+#endif  // GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MOBILE
+
+// Returns true if and only if Google Test should use colors in the output.
+bool ShouldUseColor(bool stdout_is_tty) {
+  const char* const gtest_color = GTEST_FLAG(color).c_str();
+
+  if (String::CaseInsensitiveCStringEquals(gtest_color, "auto")) {
+#if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MINGW
+    // On Windows the TERM variable is usually not set, but the
+    // console there does support colors.
+    return stdout_is_tty;
+#else
+    // On non-Windows platforms, we rely on the TERM variable.
+    const char* const term = posix::GetEnv("TERM");
+    const bool term_supports_color =
+        String::CStringEquals(term, "xterm") ||
+        String::CStringEquals(term, "xterm-color") ||
+        String::CStringEquals(term, "xterm-256color") ||
+        String::CStringEquals(term, "screen") ||
+        String::CStringEquals(term, "screen-256color") ||
+        String::CStringEquals(term, "tmux") ||
+        String::CStringEquals(term, "tmux-256color") ||
+        String::CStringEquals(term, "rxvt-unicode") ||
+        String::CStringEquals(term, "rxvt-unicode-256color") ||
+        String::CStringEquals(term, "linux") ||
+        String::CStringEquals(term, "cygwin");
+    return stdout_is_tty && term_supports_color;
+#endif  // GTEST_OS_WINDOWS
+  }
+
+  return String::CaseInsensitiveCStringEquals(gtest_color, "yes") ||
+      String::CaseInsensitiveCStringEquals(gtest_color, "true") ||
+      String::CaseInsensitiveCStringEquals(gtest_color, "t") ||
+      String::CStringEquals(gtest_color, "1");
+  // We take "yes", "true", "t", and "1" as meaning "yes".  If the
+  // value is neither one of these nor "auto", we treat it as "no" to
+  // be conservative.
+}
+
+// Helpers for printing colored strings to stdout. Note that on Windows, we
+// cannot simply emit special characters and have the terminal change colors.
+// This routine must actually emit the characters rather than return a string
+// that would be colored when printed, as can be done on Linux.
+void ColoredPrintf(GTestColor color, const char* fmt, ...) {
+  va_list args;
+  va_start(args, fmt);
+
+#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_ZOS || GTEST_OS_IOS || \
+    GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT || defined(ESP_PLATFORM)
+  const bool use_color = AlwaysFalse();
+#else
+  static const bool in_color_mode =
+      ShouldUseColor(posix::IsATTY(posix::FileNo(stdout)) != 0);
+  const bool use_color = in_color_mode && (color != COLOR_DEFAULT);
+#endif  // GTEST_OS_WINDOWS_MOBILE || GTEST_OS_ZOS
+
+  if (!use_color) {
+    vprintf(fmt, args);
+    va_end(args);
+    return;
+  }
+
+#if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MOBILE && \
+    !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT && !GTEST_OS_WINDOWS_MINGW
+  const HANDLE stdout_handle = GetStdHandle(STD_OUTPUT_HANDLE);
+
+  // Gets the current text color.
+  CONSOLE_SCREEN_BUFFER_INFO buffer_info;
+  GetConsoleScreenBufferInfo(stdout_handle, &buffer_info);
+  const WORD old_color_attrs = buffer_info.wAttributes;
+  const WORD new_color = GetNewColor(color, old_color_attrs);
+
+  // We need to flush the stream buffers into the console before each
+  // SetConsoleTextAttribute call lest it affect the text that is already
+  // printed but has not yet reached the console.
+  fflush(stdout);
+  SetConsoleTextAttribute(stdout_handle, new_color);
+
+  vprintf(fmt, args);
+
+  fflush(stdout);
+  // Restores the text color.
+  SetConsoleTextAttribute(stdout_handle, old_color_attrs);
+#else
+  printf("\033[0;3%sm", GetAnsiColorCode(color));
+  vprintf(fmt, args);
+  printf("\033[m");  // Resets the terminal to default.
+#endif  // GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MOBILE
+  va_end(args);
+}
+
+// Text printed in Google Test's text output and --gtest_list_tests
+// output to label the type parameter and value parameter for a test.
+static const char kTypeParamLabel[] = "TypeParam";
+static const char kValueParamLabel[] = "GetParam()";
+
+static void PrintFullTestCommentIfPresent(const TestInfo& test_info) {
+  const char* const type_param = test_info.type_param();
+  const char* const value_param = test_info.value_param();
+
+  if (type_param != nullptr || value_param != nullptr) {
+    printf(", where ");
+    if (type_param != nullptr) {
+      printf("%s = %s", kTypeParamLabel, type_param);
+      if (value_param != nullptr) printf(" and ");
+    }
+    if (value_param != nullptr) {
+      printf("%s = %s", kValueParamLabel, value_param);
+    }
+  }
+}
+
+// This class implements the TestEventListener interface.
+//
+// Class PrettyUnitTestResultPrinter is copyable.
+class PrettyUnitTestResultPrinter : public TestEventListener {
+ public:
+  PrettyUnitTestResultPrinter() {}
+  static void PrintTestName(const char* test_suite, const char* test) {
+    printf("%s.%s", test_suite, test);
+  }
+
+  // The following methods override what's in the TestEventListener class.
+  void OnTestProgramStart(const UnitTest& /*unit_test*/) override {}
+  void OnTestIterationStart(const UnitTest& unit_test, int iteration) override;
+  void OnEnvironmentsSetUpStart(const UnitTest& unit_test) override;
+  void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) override {}
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseStart(const TestCase& test_case) override;
+#else
+  void OnTestSuiteStart(const TestSuite& test_suite) override;
+#endif  // OnTestCaseStart
+
+  void OnTestStart(const TestInfo& test_info) override;
+
+  void OnTestPartResult(const TestPartResult& result) override;
+  void OnTestEnd(const TestInfo& test_info) override;
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseEnd(const TestCase& test_case) override;
+#else
+  void OnTestSuiteEnd(const TestSuite& test_suite) override;
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  void OnEnvironmentsTearDownStart(const UnitTest& unit_test) override;
+  void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) override {}
+  void OnTestIterationEnd(const UnitTest& unit_test, int iteration) override;
+  void OnTestProgramEnd(const UnitTest& /*unit_test*/) override {}
+
+ private:
+  static void PrintFailedTests(const UnitTest& unit_test);
+  static void PrintSkippedTests(const UnitTest& unit_test);
+};
+
+  // Fired before each iteration of tests starts.
+void PrettyUnitTestResultPrinter::OnTestIterationStart(
+    const UnitTest& unit_test, int iteration) {
+  if (GTEST_FLAG(repeat) != 1)
+    printf("\nRepeating all tests (iteration %d) . . .\n\n", iteration + 1);
+
+  const char* const filter = GTEST_FLAG(filter).c_str();
+
+  // Prints the filter if it's not *.  This reminds the user that some
+  // tests may be skipped.
+  if (!String::CStringEquals(filter, kUniversalFilter)) {
+    ColoredPrintf(COLOR_YELLOW,
+                  "Note: %s filter = %s\n", GTEST_NAME_, filter);
+  }
+
+  if (internal::ShouldShard(kTestTotalShards, kTestShardIndex, false)) {
+    const Int32 shard_index = Int32FromEnvOrDie(kTestShardIndex, -1);
+    ColoredPrintf(COLOR_YELLOW,
+                  "Note: This is test shard %d of %s.\n",
+                  static_cast<int>(shard_index) + 1,
+                  internal::posix::GetEnv(kTestTotalShards));
+  }
+
+  if (GTEST_FLAG(shuffle)) {
+    ColoredPrintf(COLOR_YELLOW,
+                  "Note: Randomizing tests' orders with a seed of %d .\n",
+                  unit_test.random_seed());
+  }
+
+  ColoredPrintf(COLOR_GREEN,  "[==========] ");
+  printf("Running %s from %s.\n",
+         FormatTestCount(unit_test.test_to_run_count()).c_str(),
+         FormatTestSuiteCount(unit_test.test_suite_to_run_count()).c_str());
+  fflush(stdout);
+}
+
+void PrettyUnitTestResultPrinter::OnEnvironmentsSetUpStart(
+    const UnitTest& /*unit_test*/) {
+  ColoredPrintf(COLOR_GREEN,  "[----------] ");
+  printf("Global test environment set-up.\n");
+  fflush(stdout);
+}
+
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+void PrettyUnitTestResultPrinter::OnTestCaseStart(const TestCase& test_case) {
+  const std::string counts =
+      FormatCountableNoun(test_case.test_to_run_count(), "test", "tests");
+  ColoredPrintf(COLOR_GREEN, "[----------] ");
+  printf("%s from %s", counts.c_str(), test_case.name());
+  if (test_case.type_param() == nullptr) {
+    printf("\n");
+  } else {
+    printf(", where %s = %s\n", kTypeParamLabel, test_case.type_param());
+  }
+  fflush(stdout);
+}
+#else
+void PrettyUnitTestResultPrinter::OnTestSuiteStart(
+    const TestSuite& test_suite) {
+  const std::string counts =
+      FormatCountableNoun(test_suite.test_to_run_count(), "test", "tests");
+  ColoredPrintf(COLOR_GREEN, "[----------] ");
+  printf("%s from %s", counts.c_str(), test_suite.name());
+  if (test_suite.type_param() == nullptr) {
+    printf("\n");
+  } else {
+    printf(", where %s = %s\n", kTypeParamLabel, test_suite.type_param());
+  }
+  fflush(stdout);
+}
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+void PrettyUnitTestResultPrinter::OnTestStart(const TestInfo& test_info) {
+  ColoredPrintf(COLOR_GREEN,  "[ RUN      ] ");
+  PrintTestName(test_info.test_suite_name(), test_info.name());
+  printf("\n");
+  fflush(stdout);
+}
+
+// Called after an assertion failure.
+void PrettyUnitTestResultPrinter::OnTestPartResult(
+    const TestPartResult& result) {
+  switch (result.type()) {
+    // If the test part succeeded, or was skipped,
+    // we don't need to do anything.
+    case TestPartResult::kSkip:
+    case TestPartResult::kSuccess:
+      return;
+    default:
+      // Print failure message from the assertion
+      // (e.g. expected this and got that).
+      PrintTestPartResult(result);
+      fflush(stdout);
+  }
+}
+
+void PrettyUnitTestResultPrinter::OnTestEnd(const TestInfo& test_info) {
+  if (test_info.result()->Passed()) {
+    ColoredPrintf(COLOR_GREEN, "[       OK ] ");
+  } else if (test_info.result()->Skipped()) {
+    ColoredPrintf(COLOR_GREEN, "[  SKIPPED ] ");
+  } else {
+    ColoredPrintf(COLOR_RED, "[  FAILED  ] ");
+  }
+  PrintTestName(test_info.test_suite_name(), test_info.name());
+  if (test_info.result()->Failed())
+    PrintFullTestCommentIfPresent(test_info);
+
+  if (GTEST_FLAG(print_time)) {
+    printf(" (%s ms)\n", internal::StreamableToString(
+           test_info.result()->elapsed_time()).c_str());
+  } else {
+    printf("\n");
+  }
+  fflush(stdout);
+}
+
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+void PrettyUnitTestResultPrinter::OnTestCaseEnd(const TestCase& test_case) {
+  if (!GTEST_FLAG(print_time)) return;
+
+  const std::string counts =
+      FormatCountableNoun(test_case.test_to_run_count(), "test", "tests");
+  ColoredPrintf(COLOR_GREEN, "[----------] ");
+  printf("%s from %s (%s ms total)\n\n", counts.c_str(), test_case.name(),
+         internal::StreamableToString(test_case.elapsed_time()).c_str());
+  fflush(stdout);
+}
+#else
+void PrettyUnitTestResultPrinter::OnTestSuiteEnd(const TestSuite& test_suite) {
+  if (!GTEST_FLAG(print_time)) return;
+
+  const std::string counts =
+      FormatCountableNoun(test_suite.test_to_run_count(), "test", "tests");
+  ColoredPrintf(COLOR_GREEN, "[----------] ");
+  printf("%s from %s (%s ms total)\n\n", counts.c_str(), test_suite.name(),
+         internal::StreamableToString(test_suite.elapsed_time()).c_str());
+  fflush(stdout);
+}
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+void PrettyUnitTestResultPrinter::OnEnvironmentsTearDownStart(
+    const UnitTest& /*unit_test*/) {
+  ColoredPrintf(COLOR_GREEN,  "[----------] ");
+  printf("Global test environment tear-down\n");
+  fflush(stdout);
+}
+
+// Internal helper for printing the list of failed tests.
+void PrettyUnitTestResultPrinter::PrintFailedTests(const UnitTest& unit_test) {
+  const int failed_test_count = unit_test.failed_test_count();
+  if (failed_test_count == 0) {
+    return;
+  }
+
+  for (int i = 0; i < unit_test.total_test_suite_count(); ++i) {
+    const TestSuite& test_suite = *unit_test.GetTestSuite(i);
+    if (!test_suite.should_run() || (test_suite.failed_test_count() == 0)) {
+      continue;
+    }
+    for (int j = 0; j < test_suite.total_test_count(); ++j) {
+      const TestInfo& test_info = *test_suite.GetTestInfo(j);
+      if (!test_info.should_run() || !test_info.result()->Failed()) {
+        continue;
+      }
+      ColoredPrintf(COLOR_RED, "[  FAILED  ] ");
+      printf("%s.%s", test_suite.name(), test_info.name());
+      PrintFullTestCommentIfPresent(test_info);
+      printf("\n");
+    }
+  }
+}
+
+// Internal helper for printing the list of skipped tests.
+void PrettyUnitTestResultPrinter::PrintSkippedTests(const UnitTest& unit_test) {
+  const int skipped_test_count = unit_test.skipped_test_count();
+  if (skipped_test_count == 0) {
+    return;
+  }
+
+  for (int i = 0; i < unit_test.total_test_suite_count(); ++i) {
+    const TestSuite& test_suite = *unit_test.GetTestSuite(i);
+    if (!test_suite.should_run() || (test_suite.skipped_test_count() == 0)) {
+      continue;
+    }
+    for (int j = 0; j < test_suite.total_test_count(); ++j) {
+      const TestInfo& test_info = *test_suite.GetTestInfo(j);
+      if (!test_info.should_run() || !test_info.result()->Skipped()) {
+        continue;
+      }
+      ColoredPrintf(COLOR_GREEN, "[  SKIPPED ] ");
+      printf("%s.%s", test_suite.name(), test_info.name());
+      printf("\n");
+    }
+  }
+}
+
+void PrettyUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
+                                                     int /*iteration*/) {
+  ColoredPrintf(COLOR_GREEN,  "[==========] ");
+  printf("%s from %s ran.",
+         FormatTestCount(unit_test.test_to_run_count()).c_str(),
+         FormatTestSuiteCount(unit_test.test_suite_to_run_count()).c_str());
+  if (GTEST_FLAG(print_time)) {
+    printf(" (%s ms total)",
+           internal::StreamableToString(unit_test.elapsed_time()).c_str());
+  }
+  printf("\n");
+  ColoredPrintf(COLOR_GREEN,  "[  PASSED  ] ");
+  printf("%s.\n", FormatTestCount(unit_test.successful_test_count()).c_str());
+
+  const int skipped_test_count = unit_test.skipped_test_count();
+  if (skipped_test_count > 0) {
+    ColoredPrintf(COLOR_GREEN, "[  SKIPPED ] ");
+    printf("%s, listed below:\n", FormatTestCount(skipped_test_count).c_str());
+    PrintSkippedTests(unit_test);
+  }
+
+  int num_failures = unit_test.failed_test_count();
+  if (!unit_test.Passed()) {
+    const int failed_test_count = unit_test.failed_test_count();
+    ColoredPrintf(COLOR_RED,  "[  FAILED  ] ");
+    printf("%s, listed below:\n", FormatTestCount(failed_test_count).c_str());
+    PrintFailedTests(unit_test);
+    printf("\n%2d FAILED %s\n", num_failures,
+                        num_failures == 1 ? "TEST" : "TESTS");
+  }
+
+  int num_disabled = unit_test.reportable_disabled_test_count();
+  if (num_disabled && !GTEST_FLAG(also_run_disabled_tests)) {
+    if (!num_failures) {
+      printf("\n");  // Add a spacer if no FAILURE banner is displayed.
+    }
+    ColoredPrintf(COLOR_YELLOW,
+                  "  YOU HAVE %d DISABLED %s\n\n",
+                  num_disabled,
+                  num_disabled == 1 ? "TEST" : "TESTS");
+  }
+  // Ensure that Google Test output is printed before, e.g., heapchecker output.
+  fflush(stdout);
+}
+
+// End PrettyUnitTestResultPrinter
+
+// class TestEventRepeater
+//
+// This class forwards events to other event listeners.
+class TestEventRepeater : public TestEventListener {
+ public:
+  TestEventRepeater() : forwarding_enabled_(true) {}
+  ~TestEventRepeater() override;
+  void Append(TestEventListener *listener);
+  TestEventListener* Release(TestEventListener* listener);
+
+  // Controls whether events will be forwarded to listeners_. Set to false
+  // in death test child processes.
+  bool forwarding_enabled() const { return forwarding_enabled_; }
+  void set_forwarding_enabled(bool enable) { forwarding_enabled_ = enable; }
+
+  void OnTestProgramStart(const UnitTest& unit_test) override;
+  void OnTestIterationStart(const UnitTest& unit_test, int iteration) override;
+  void OnEnvironmentsSetUpStart(const UnitTest& unit_test) override;
+  void OnEnvironmentsSetUpEnd(const UnitTest& unit_test) override;
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseStart(const TestSuite& parameter) override;
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestSuiteStart(const TestSuite& parameter) override;
+  void OnTestStart(const TestInfo& test_info) override;
+  void OnTestPartResult(const TestPartResult& result) override;
+  void OnTestEnd(const TestInfo& test_info) override;
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseEnd(const TestCase& parameter) override;
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestSuiteEnd(const TestSuite& parameter) override;
+  void OnEnvironmentsTearDownStart(const UnitTest& unit_test) override;
+  void OnEnvironmentsTearDownEnd(const UnitTest& unit_test) override;
+  void OnTestIterationEnd(const UnitTest& unit_test, int iteration) override;
+  void OnTestProgramEnd(const UnitTest& unit_test) override;
+
+ private:
+  // Controls whether events will be forwarded to listeners_. Set to false
+  // in death test child processes.
+  bool forwarding_enabled_;
+  // The list of listeners that receive events.
+  std::vector<TestEventListener*> listeners_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestEventRepeater);
+};
+
+TestEventRepeater::~TestEventRepeater() {
+  ForEach(listeners_, Delete<TestEventListener>);
+}
+
+void TestEventRepeater::Append(TestEventListener *listener) {
+  listeners_.push_back(listener);
+}
+
+TestEventListener* TestEventRepeater::Release(TestEventListener *listener) {
+  for (size_t i = 0; i < listeners_.size(); ++i) {
+    if (listeners_[i] == listener) {
+      listeners_.erase(listeners_.begin() + static_cast<int>(i));
+      return listener;
+    }
+  }
+
+  return nullptr;
+}
+
+// Since most methods are very similar, use macros to reduce boilerplate.
+// This defines a member that forwards the call to all listeners.
+#define GTEST_REPEATER_METHOD_(Name, Type) \
+void TestEventRepeater::Name(const Type& parameter) { \
+  if (forwarding_enabled_) { \
+    for (size_t i = 0; i < listeners_.size(); i++) { \
+      listeners_[i]->Name(parameter); \
+    } \
+  } \
+}
+// This defines a member that forwards the call to all listeners in reverse
+// order.
+#define GTEST_REVERSE_REPEATER_METHOD_(Name, Type)      \
+  void TestEventRepeater::Name(const Type& parameter) { \
+    if (forwarding_enabled_) {                          \
+      for (size_t i = listeners_.size(); i != 0; i--) { \
+        listeners_[i - 1]->Name(parameter);             \
+      }                                                 \
+    }                                                   \
+  }
+
+GTEST_REPEATER_METHOD_(OnTestProgramStart, UnitTest)
+GTEST_REPEATER_METHOD_(OnEnvironmentsSetUpStart, UnitTest)
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+GTEST_REPEATER_METHOD_(OnTestCaseStart, TestSuite)
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+GTEST_REPEATER_METHOD_(OnTestSuiteStart, TestSuite)
+GTEST_REPEATER_METHOD_(OnTestStart, TestInfo)
+GTEST_REPEATER_METHOD_(OnTestPartResult, TestPartResult)
+GTEST_REPEATER_METHOD_(OnEnvironmentsTearDownStart, UnitTest)
+GTEST_REVERSE_REPEATER_METHOD_(OnEnvironmentsSetUpEnd, UnitTest)
+GTEST_REVERSE_REPEATER_METHOD_(OnEnvironmentsTearDownEnd, UnitTest)
+GTEST_REVERSE_REPEATER_METHOD_(OnTestEnd, TestInfo)
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+GTEST_REVERSE_REPEATER_METHOD_(OnTestCaseEnd, TestSuite)
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+GTEST_REVERSE_REPEATER_METHOD_(OnTestSuiteEnd, TestSuite)
+GTEST_REVERSE_REPEATER_METHOD_(OnTestProgramEnd, UnitTest)
+
+#undef GTEST_REPEATER_METHOD_
+#undef GTEST_REVERSE_REPEATER_METHOD_
+
+void TestEventRepeater::OnTestIterationStart(const UnitTest& unit_test,
+                                             int iteration) {
+  if (forwarding_enabled_) {
+    for (size_t i = 0; i < listeners_.size(); i++) {
+      listeners_[i]->OnTestIterationStart(unit_test, iteration);
+    }
+  }
+}
+
+void TestEventRepeater::OnTestIterationEnd(const UnitTest& unit_test,
+                                           int iteration) {
+  if (forwarding_enabled_) {
+    for (size_t i = listeners_.size(); i > 0; i--) {
+      listeners_[i - 1]->OnTestIterationEnd(unit_test, iteration);
+    }
+  }
+}
+
+// End TestEventRepeater
+
+// This class generates an XML output file.
+class XmlUnitTestResultPrinter : public EmptyTestEventListener {
+ public:
+  explicit XmlUnitTestResultPrinter(const char* output_file);
+
+  void OnTestIterationEnd(const UnitTest& unit_test, int iteration) override;
+  void ListTestsMatchingFilter(const std::vector<TestSuite*>& test_suites);
+
+  // Prints an XML summary of all unit tests.
+  static void PrintXmlTestsList(std::ostream* stream,
+                                const std::vector<TestSuite*>& test_suites);
+
+ private:
+  // Is c a whitespace character that is normalized to a space character
+  // when it appears in an XML attribute value?
+  static bool IsNormalizableWhitespace(char c) {
+    return c == 0x9 || c == 0xA || c == 0xD;
+  }
+
+  // May c appear in a well-formed XML document?
+  static bool IsValidXmlCharacter(char c) {
+    return IsNormalizableWhitespace(c) || c >= 0x20;
+  }
+
+  // Returns an XML-escaped copy of the input string str.  If
+  // is_attribute is true, the text is meant to appear as an attribute
+  // value, and normalizable whitespace is preserved by replacing it
+  // with character references.
+  static std::string EscapeXml(const std::string& str, bool is_attribute);
+
+  // Returns the given string with all characters invalid in XML removed.
+  static std::string RemoveInvalidXmlCharacters(const std::string& str);
+
+  // Convenience wrapper around EscapeXml when str is an attribute value.
+  static std::string EscapeXmlAttribute(const std::string& str) {
+    return EscapeXml(str, true);
+  }
+
+  // Convenience wrapper around EscapeXml when str is not an attribute value.
+  static std::string EscapeXmlText(const char* str) {
+    return EscapeXml(str, false);
+  }
+
+  // Verifies that the given attribute belongs to the given element and
+  // streams the attribute as XML.
+  static void OutputXmlAttribute(std::ostream* stream,
+                                 const std::string& element_name,
+                                 const std::string& name,
+                                 const std::string& value);
+
+  // Streams an XML CDATA section, escaping invalid CDATA sequences as needed.
+  static void OutputXmlCDataSection(::std::ostream* stream, const char* data);
+
+  // Streams an XML representation of a TestInfo object.
+  static void OutputXmlTestInfo(::std::ostream* stream,
+                                const char* test_suite_name,
+                                const TestInfo& test_info);
+
+  // Prints an XML representation of a TestSuite object
+  static void PrintXmlTestSuite(::std::ostream* stream,
+                                const TestSuite& test_suite);
+
+  // Prints an XML summary of unit_test to output stream out.
+  static void PrintXmlUnitTest(::std::ostream* stream,
+                               const UnitTest& unit_test);
+
+  // Produces a string representing the test properties in a result as space
+  // delimited XML attributes based on the property key="value" pairs.
+  // When the std::string is not empty, it includes a space at the beginning,
+  // to delimit this attribute from prior attributes.
+  static std::string TestPropertiesAsXmlAttributes(const TestResult& result);
+
+  // Streams an XML representation of the test properties of a TestResult
+  // object.
+  static void OutputXmlTestProperties(std::ostream* stream,
+                                      const TestResult& result);
+
+  // The output file.
+  const std::string output_file_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(XmlUnitTestResultPrinter);
+};
+
+// Creates a new XmlUnitTestResultPrinter.
+XmlUnitTestResultPrinter::XmlUnitTestResultPrinter(const char* output_file)
+    : output_file_(output_file) {
+  if (output_file_.empty()) {
+    GTEST_LOG_(FATAL) << "XML output file may not be null";
+  }
+}
+
+// Called after the unit test ends.
+void XmlUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
+                                                  int /*iteration*/) {
+  FILE* xmlout = OpenFileForWriting(output_file_);
+  std::stringstream stream;
+  PrintXmlUnitTest(&stream, unit_test);
+  fprintf(xmlout, "%s", StringStreamToString(&stream).c_str());
+  fclose(xmlout);
+}
+
+void XmlUnitTestResultPrinter::ListTestsMatchingFilter(
+    const std::vector<TestSuite*>& test_suites) {
+  FILE* xmlout = OpenFileForWriting(output_file_);
+  std::stringstream stream;
+  PrintXmlTestsList(&stream, test_suites);
+  fprintf(xmlout, "%s", StringStreamToString(&stream).c_str());
+  fclose(xmlout);
+}
+
+// Returns an XML-escaped copy of the input string str.  If is_attribute
+// is true, the text is meant to appear as an attribute value, and
+// normalizable whitespace is preserved by replacing it with character
+// references.
+//
+// Invalid XML characters in str, if any, are stripped from the output.
+// It is expected that most, if not all, of the text processed by this
+// module will consist of ordinary English text.
+// If this module is ever modified to produce version 1.1 XML output,
+// most invalid characters can be retained using character references.
+std::string XmlUnitTestResultPrinter::EscapeXml(
+    const std::string& str, bool is_attribute) {
+  Message m;
+
+  for (size_t i = 0; i < str.size(); ++i) {
+    const char ch = str[i];
+    switch (ch) {
+      case '<':
+        m << "&lt;";
+        break;
+      case '>':
+        m << "&gt;";
+        break;
+      case '&':
+        m << "&amp;";
+        break;
+      case '\'':
+        if (is_attribute)
+          m << "&apos;";
+        else
+          m << '\'';
+        break;
+      case '"':
+        if (is_attribute)
+          m << "&quot;";
+        else
+          m << '"';
+        break;
+      default:
+        if (IsValidXmlCharacter(ch)) {
+          if (is_attribute && IsNormalizableWhitespace(ch))
+            m << "&#x" << String::FormatByte(static_cast<unsigned char>(ch))
+              << ";";
+          else
+            m << ch;
+        }
+        break;
+    }
+  }
+
+  return m.GetString();
+}
+
+// Returns the given string with all characters invalid in XML removed.
+// Currently invalid characters are dropped from the string. An
+// alternative is to replace them with certain characters such as . or ?.
+std::string XmlUnitTestResultPrinter::RemoveInvalidXmlCharacters(
+    const std::string& str) {
+  std::string output;
+  output.reserve(str.size());
+  for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
+    if (IsValidXmlCharacter(*it))
+      output.push_back(*it);
+
+  return output;
+}
+
+// The following routines generate an XML representation of a UnitTest
+// object.
+// GOOGLETEST_CM0009 DO NOT DELETE
+//
+// This is how Google Test concepts map to the DTD:
+//
+// <testsuites name="AllTests">        <-- corresponds to a UnitTest object
+//   <testsuite name="testcase-name">  <-- corresponds to a TestSuite object
+//     <testcase name="test-name">     <-- corresponds to a TestInfo object
+//       <failure message="...">...</failure>
+//       <failure message="...">...</failure>
+//       <failure message="...">...</failure>
+//                                     <-- individual assertion failures
+//     </testcase>
+//   </testsuite>
+// </testsuites>
+
+// Formats the given time in milliseconds as seconds.
+std::string FormatTimeInMillisAsSeconds(TimeInMillis ms) {
+  ::std::stringstream ss;
+  ss << (static_cast<double>(ms) * 1e-3);
+  return ss.str();
+}
+
+static bool PortableLocaltime(time_t seconds, struct tm* out) {
+#if defined(_MSC_VER)
+  return localtime_s(out, &seconds) == 0;
+#elif defined(__MINGW32__) || defined(__MINGW64__)
+  // MINGW <time.h> provides neither localtime_r nor localtime_s, but uses
+  // Windows' localtime(), which has a thread-local tm buffer.
+  struct tm* tm_ptr = localtime(&seconds);  // NOLINT
+  if (tm_ptr == nullptr) return false;
+  *out = *tm_ptr;
+  return true;
+#else
+  return localtime_r(&seconds, out) != nullptr;
+#endif
+}
+
+// Converts the given epoch time in milliseconds to a date string in the ISO
+// 8601 format, without the timezone information.
+std::string FormatEpochTimeInMillisAsIso8601(TimeInMillis ms) {
+  struct tm time_struct;
+  if (!PortableLocaltime(static_cast<time_t>(ms / 1000), &time_struct))
+    return "";
+  // YYYY-MM-DDThh:mm:ss
+  return StreamableToString(time_struct.tm_year + 1900) + "-" +
+      String::FormatIntWidth2(time_struct.tm_mon + 1) + "-" +
+      String::FormatIntWidth2(time_struct.tm_mday) + "T" +
+      String::FormatIntWidth2(time_struct.tm_hour) + ":" +
+      String::FormatIntWidth2(time_struct.tm_min) + ":" +
+      String::FormatIntWidth2(time_struct.tm_sec);
+}
+
+// Streams an XML CDATA section, escaping invalid CDATA sequences as needed.
+void XmlUnitTestResultPrinter::OutputXmlCDataSection(::std::ostream* stream,
+                                                     const char* data) {
+  const char* segment = data;
+  *stream << "<![CDATA[";
+  for (;;) {
+    const char* const next_segment = strstr(segment, "]]>");
+    if (next_segment != nullptr) {
+      stream->write(
+          segment, static_cast<std::streamsize>(next_segment - segment));
+      *stream << "]]>]]&gt;<![CDATA[";
+      segment = next_segment + strlen("]]>");
+    } else {
+      *stream << segment;
+      break;
+    }
+  }
+  *stream << "]]>";
+}
+
+void XmlUnitTestResultPrinter::OutputXmlAttribute(
+    std::ostream* stream,
+    const std::string& element_name,
+    const std::string& name,
+    const std::string& value) {
+  const std::vector<std::string>& allowed_names =
+      GetReservedOutputAttributesForElement(element_name);
+
+  GTEST_CHECK_(std::find(allowed_names.begin(), allowed_names.end(), name) !=
+                   allowed_names.end())
+      << "Attribute " << name << " is not allowed for element <" << element_name
+      << ">.";
+
+  *stream << " " << name << "=\"" << EscapeXmlAttribute(value) << "\"";
+}
+
+// Prints an XML representation of a TestInfo object.
+void XmlUnitTestResultPrinter::OutputXmlTestInfo(::std::ostream* stream,
+                                                 const char* test_suite_name,
+                                                 const TestInfo& test_info) {
+  const TestResult& result = *test_info.result();
+  const std::string kTestsuite = "testcase";
+
+  if (test_info.is_in_another_shard()) {
+    return;
+  }
+
+  *stream << "    <testcase";
+  OutputXmlAttribute(stream, kTestsuite, "name", test_info.name());
+
+  if (test_info.value_param() != nullptr) {
+    OutputXmlAttribute(stream, kTestsuite, "value_param",
+                       test_info.value_param());
+  }
+  if (test_info.type_param() != nullptr) {
+    OutputXmlAttribute(stream, kTestsuite, "type_param",
+                       test_info.type_param());
+  }
+  if (GTEST_FLAG(list_tests)) {
+    OutputXmlAttribute(stream, kTestsuite, "file", test_info.file());
+    OutputXmlAttribute(stream, kTestsuite, "line",
+                       StreamableToString(test_info.line()));
+    *stream << " />\n";
+    return;
+  }
+
+  OutputXmlAttribute(stream, kTestsuite, "status",
+                     test_info.should_run() ? "run" : "notrun");
+  OutputXmlAttribute(stream, kTestsuite, "result",
+                     test_info.should_run()
+                         ? (result.Skipped() ? "skipped" : "completed")
+                         : "suppressed");
+  OutputXmlAttribute(stream, kTestsuite, "time",
+                     FormatTimeInMillisAsSeconds(result.elapsed_time()));
+  OutputXmlAttribute(
+      stream, kTestsuite, "timestamp",
+      FormatEpochTimeInMillisAsIso8601(result.start_timestamp()));
+  OutputXmlAttribute(stream, kTestsuite, "classname", test_suite_name);
+
+  int failures = 0;
+  for (int i = 0; i < result.total_part_count(); ++i) {
+    const TestPartResult& part = result.GetTestPartResult(i);
+    if (part.failed()) {
+      if (++failures == 1) {
+        *stream << ">\n";
+      }
+      const std::string location =
+          internal::FormatCompilerIndependentFileLocation(part.file_name(),
+                                                          part.line_number());
+      const std::string summary = location + "\n" + part.summary();
+      *stream << "      <failure message=\""
+              << EscapeXmlAttribute(summary.c_str())
+              << "\" type=\"\">";
+      const std::string detail = location + "\n" + part.message();
+      OutputXmlCDataSection(stream, RemoveInvalidXmlCharacters(detail).c_str());
+      *stream << "</failure>\n";
+    }
+  }
+
+  if (failures == 0 && result.test_property_count() == 0) {
+    *stream << " />\n";
+  } else {
+    if (failures == 0) {
+      *stream << ">\n";
+    }
+    OutputXmlTestProperties(stream, result);
+    *stream << "    </testcase>\n";
+  }
+}
+
+// Prints an XML representation of a TestSuite object
+void XmlUnitTestResultPrinter::PrintXmlTestSuite(std::ostream* stream,
+                                                 const TestSuite& test_suite) {
+  const std::string kTestsuite = "testsuite";
+  *stream << "  <" << kTestsuite;
+  OutputXmlAttribute(stream, kTestsuite, "name", test_suite.name());
+  OutputXmlAttribute(stream, kTestsuite, "tests",
+                     StreamableToString(test_suite.reportable_test_count()));
+  if (!GTEST_FLAG(list_tests)) {
+    OutputXmlAttribute(stream, kTestsuite, "failures",
+                       StreamableToString(test_suite.failed_test_count()));
+    OutputXmlAttribute(
+        stream, kTestsuite, "disabled",
+        StreamableToString(test_suite.reportable_disabled_test_count()));
+    OutputXmlAttribute(stream, kTestsuite, "errors", "0");
+    OutputXmlAttribute(stream, kTestsuite, "time",
+                       FormatTimeInMillisAsSeconds(test_suite.elapsed_time()));
+    OutputXmlAttribute(
+        stream, kTestsuite, "timestamp",
+        FormatEpochTimeInMillisAsIso8601(test_suite.start_timestamp()));
+    *stream << TestPropertiesAsXmlAttributes(test_suite.ad_hoc_test_result());
+  }
+  *stream << ">\n";
+  for (int i = 0; i < test_suite.total_test_count(); ++i) {
+    if (test_suite.GetTestInfo(i)->is_reportable())
+      OutputXmlTestInfo(stream, test_suite.name(), *test_suite.GetTestInfo(i));
+  }
+  *stream << "  </" << kTestsuite << ">\n";
+}
+
+// Prints an XML summary of unit_test to output stream out.
+void XmlUnitTestResultPrinter::PrintXmlUnitTest(std::ostream* stream,
+                                                const UnitTest& unit_test) {
+  const std::string kTestsuites = "testsuites";
+
+  *stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
+  *stream << "<" << kTestsuites;
+
+  OutputXmlAttribute(stream, kTestsuites, "tests",
+                     StreamableToString(unit_test.reportable_test_count()));
+  OutputXmlAttribute(stream, kTestsuites, "failures",
+                     StreamableToString(unit_test.failed_test_count()));
+  OutputXmlAttribute(
+      stream, kTestsuites, "disabled",
+      StreamableToString(unit_test.reportable_disabled_test_count()));
+  OutputXmlAttribute(stream, kTestsuites, "errors", "0");
+  OutputXmlAttribute(stream, kTestsuites, "time",
+                     FormatTimeInMillisAsSeconds(unit_test.elapsed_time()));
+  OutputXmlAttribute(
+      stream, kTestsuites, "timestamp",
+      FormatEpochTimeInMillisAsIso8601(unit_test.start_timestamp()));
+
+  if (GTEST_FLAG(shuffle)) {
+    OutputXmlAttribute(stream, kTestsuites, "random_seed",
+                       StreamableToString(unit_test.random_seed()));
+  }
+  *stream << TestPropertiesAsXmlAttributes(unit_test.ad_hoc_test_result());
+
+  OutputXmlAttribute(stream, kTestsuites, "name", "AllTests");
+  *stream << ">\n";
+
+  for (int i = 0; i < unit_test.total_test_suite_count(); ++i) {
+    if (unit_test.GetTestSuite(i)->reportable_test_count() > 0)
+      PrintXmlTestSuite(stream, *unit_test.GetTestSuite(i));
+  }
+  *stream << "</" << kTestsuites << ">\n";
+}
+
+void XmlUnitTestResultPrinter::PrintXmlTestsList(
+    std::ostream* stream, const std::vector<TestSuite*>& test_suites) {
+  const std::string kTestsuites = "testsuites";
+
+  *stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
+  *stream << "<" << kTestsuites;
+
+  int total_tests = 0;
+  for (auto test_suite : test_suites) {
+    total_tests += test_suite->total_test_count();
+  }
+  OutputXmlAttribute(stream, kTestsuites, "tests",
+                     StreamableToString(total_tests));
+  OutputXmlAttribute(stream, kTestsuites, "name", "AllTests");
+  *stream << ">\n";
+
+  for (auto test_suite : test_suites) {
+    PrintXmlTestSuite(stream, *test_suite);
+  }
+  *stream << "</" << kTestsuites << ">\n";
+}
+
+// Produces a string representing the test properties in a result as space
+// delimited XML attributes based on the property key="value" pairs.
+std::string XmlUnitTestResultPrinter::TestPropertiesAsXmlAttributes(
+    const TestResult& result) {
+  Message attributes;
+  for (int i = 0; i < result.test_property_count(); ++i) {
+    const TestProperty& property = result.GetTestProperty(i);
+    attributes << " " << property.key() << "="
+        << "\"" << EscapeXmlAttribute(property.value()) << "\"";
+  }
+  return attributes.GetString();
+}
+
+void XmlUnitTestResultPrinter::OutputXmlTestProperties(
+    std::ostream* stream, const TestResult& result) {
+  const std::string kProperties = "properties";
+  const std::string kProperty = "property";
+
+  if (result.test_property_count() <= 0) {
+    return;
+  }
+
+  *stream << "<" << kProperties << ">\n";
+  for (int i = 0; i < result.test_property_count(); ++i) {
+    const TestProperty& property = result.GetTestProperty(i);
+    *stream << "<" << kProperty;
+    *stream << " name=\"" << EscapeXmlAttribute(property.key()) << "\"";
+    *stream << " value=\"" << EscapeXmlAttribute(property.value()) << "\"";
+    *stream << "/>\n";
+  }
+  *stream << "</" << kProperties << ">\n";
+}
+
+// End XmlUnitTestResultPrinter
+
+// This class generates an JSON output file.
+class JsonUnitTestResultPrinter : public EmptyTestEventListener {
+ public:
+  explicit JsonUnitTestResultPrinter(const char* output_file);
+
+  void OnTestIterationEnd(const UnitTest& unit_test, int iteration) override;
+
+  // Prints an JSON summary of all unit tests.
+  static void PrintJsonTestList(::std::ostream* stream,
+                                const std::vector<TestSuite*>& test_suites);
+
+ private:
+  // Returns an JSON-escaped copy of the input string str.
+  static std::string EscapeJson(const std::string& str);
+
+  //// Verifies that the given attribute belongs to the given element and
+  //// streams the attribute as JSON.
+  static void OutputJsonKey(std::ostream* stream,
+                            const std::string& element_name,
+                            const std::string& name,
+                            const std::string& value,
+                            const std::string& indent,
+                            bool comma = true);
+  static void OutputJsonKey(std::ostream* stream,
+                            const std::string& element_name,
+                            const std::string& name,
+                            int value,
+                            const std::string& indent,
+                            bool comma = true);
+
+  // Streams a JSON representation of a TestInfo object.
+  static void OutputJsonTestInfo(::std::ostream* stream,
+                                 const char* test_suite_name,
+                                 const TestInfo& test_info);
+
+  // Prints a JSON representation of a TestSuite object
+  static void PrintJsonTestSuite(::std::ostream* stream,
+                                 const TestSuite& test_suite);
+
+  // Prints a JSON summary of unit_test to output stream out.
+  static void PrintJsonUnitTest(::std::ostream* stream,
+                                const UnitTest& unit_test);
+
+  // Produces a string representing the test properties in a result as
+  // a JSON dictionary.
+  static std::string TestPropertiesAsJson(const TestResult& result,
+                                          const std::string& indent);
+
+  // The output file.
+  const std::string output_file_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(JsonUnitTestResultPrinter);
+};
+
+// Creates a new JsonUnitTestResultPrinter.
+JsonUnitTestResultPrinter::JsonUnitTestResultPrinter(const char* output_file)
+    : output_file_(output_file) {
+  if (output_file_.empty()) {
+    GTEST_LOG_(FATAL) << "JSON output file may not be null";
+  }
+}
+
+void JsonUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
+                                                  int /*iteration*/) {
+  FILE* jsonout = OpenFileForWriting(output_file_);
+  std::stringstream stream;
+  PrintJsonUnitTest(&stream, unit_test);
+  fprintf(jsonout, "%s", StringStreamToString(&stream).c_str());
+  fclose(jsonout);
+}
+
+// Returns an JSON-escaped copy of the input string str.
+std::string JsonUnitTestResultPrinter::EscapeJson(const std::string& str) {
+  Message m;
+
+  for (size_t i = 0; i < str.size(); ++i) {
+    const char ch = str[i];
+    switch (ch) {
+      case '\\':
+      case '"':
+      case '/':
+        m << '\\' << ch;
+        break;
+      case '\b':
+        m << "\\b";
+        break;
+      case '\t':
+        m << "\\t";
+        break;
+      case '\n':
+        m << "\\n";
+        break;
+      case '\f':
+        m << "\\f";
+        break;
+      case '\r':
+        m << "\\r";
+        break;
+      default:
+        if (ch < ' ') {
+          m << "\\u00" << String::FormatByte(static_cast<unsigned char>(ch));
+        } else {
+          m << ch;
+        }
+        break;
+    }
+  }
+
+  return m.GetString();
+}
+
+// The following routines generate an JSON representation of a UnitTest
+// object.
+
+// Formats the given time in milliseconds as seconds.
+static std::string FormatTimeInMillisAsDuration(TimeInMillis ms) {
+  ::std::stringstream ss;
+  ss << (static_cast<double>(ms) * 1e-3) << "s";
+  return ss.str();
+}
+
+// Converts the given epoch time in milliseconds to a date string in the
+// RFC3339 format, without the timezone information.
+static std::string FormatEpochTimeInMillisAsRFC3339(TimeInMillis ms) {
+  struct tm time_struct;
+  if (!PortableLocaltime(static_cast<time_t>(ms / 1000), &time_struct))
+    return "";
+  // YYYY-MM-DDThh:mm:ss
+  return StreamableToString(time_struct.tm_year + 1900) + "-" +
+      String::FormatIntWidth2(time_struct.tm_mon + 1) + "-" +
+      String::FormatIntWidth2(time_struct.tm_mday) + "T" +
+      String::FormatIntWidth2(time_struct.tm_hour) + ":" +
+      String::FormatIntWidth2(time_struct.tm_min) + ":" +
+      String::FormatIntWidth2(time_struct.tm_sec) + "Z";
+}
+
+static inline std::string Indent(size_t width) {
+  return std::string(width, ' ');
+}
+
+void JsonUnitTestResultPrinter::OutputJsonKey(
+    std::ostream* stream,
+    const std::string& element_name,
+    const std::string& name,
+    const std::string& value,
+    const std::string& indent,
+    bool comma) {
+  const std::vector<std::string>& allowed_names =
+      GetReservedOutputAttributesForElement(element_name);
+
+  GTEST_CHECK_(std::find(allowed_names.begin(), allowed_names.end(), name) !=
+                   allowed_names.end())
+      << "Key \"" << name << "\" is not allowed for value \"" << element_name
+      << "\".";
+
+  *stream << indent << "\"" << name << "\": \"" << EscapeJson(value) << "\"";
+  if (comma)
+    *stream << ",\n";
+}
+
+void JsonUnitTestResultPrinter::OutputJsonKey(
+    std::ostream* stream,
+    const std::string& element_name,
+    const std::string& name,
+    int value,
+    const std::string& indent,
+    bool comma) {
+  const std::vector<std::string>& allowed_names =
+      GetReservedOutputAttributesForElement(element_name);
+
+  GTEST_CHECK_(std::find(allowed_names.begin(), allowed_names.end(), name) !=
+                   allowed_names.end())
+      << "Key \"" << name << "\" is not allowed for value \"" << element_name
+      << "\".";
+
+  *stream << indent << "\"" << name << "\": " << StreamableToString(value);
+  if (comma)
+    *stream << ",\n";
+}
+
+// Prints a JSON representation of a TestInfo object.
+void JsonUnitTestResultPrinter::OutputJsonTestInfo(::std::ostream* stream,
+                                                   const char* test_suite_name,
+                                                   const TestInfo& test_info) {
+  const TestResult& result = *test_info.result();
+  const std::string kTestsuite = "testcase";
+  const std::string kIndent = Indent(10);
+
+  *stream << Indent(8) << "{\n";
+  OutputJsonKey(stream, kTestsuite, "name", test_info.name(), kIndent);
+
+  if (test_info.value_param() != nullptr) {
+    OutputJsonKey(stream, kTestsuite, "value_param", test_info.value_param(),
+                  kIndent);
+  }
+  if (test_info.type_param() != nullptr) {
+    OutputJsonKey(stream, kTestsuite, "type_param", test_info.type_param(),
+                  kIndent);
+  }
+  if (GTEST_FLAG(list_tests)) {
+    OutputJsonKey(stream, kTestsuite, "file", test_info.file(), kIndent);
+    OutputJsonKey(stream, kTestsuite, "line", test_info.line(), kIndent, false);
+    *stream << "\n" << Indent(8) << "}";
+    return;
+  }
+
+  OutputJsonKey(stream, kTestsuite, "status",
+                test_info.should_run() ? "RUN" : "NOTRUN", kIndent);
+  OutputJsonKey(stream, kTestsuite, "result",
+                test_info.should_run()
+                    ? (result.Skipped() ? "SKIPPED" : "COMPLETED")
+                    : "SUPPRESSED",
+                kIndent);
+  OutputJsonKey(stream, kTestsuite, "timestamp",
+                FormatEpochTimeInMillisAsRFC3339(result.start_timestamp()),
+                kIndent);
+  OutputJsonKey(stream, kTestsuite, "time",
+                FormatTimeInMillisAsDuration(result.elapsed_time()), kIndent);
+  OutputJsonKey(stream, kTestsuite, "classname", test_suite_name, kIndent,
+                false);
+  *stream << TestPropertiesAsJson(result, kIndent);
+
+  int failures = 0;
+  for (int i = 0; i < result.total_part_count(); ++i) {
+    const TestPartResult& part = result.GetTestPartResult(i);
+    if (part.failed()) {
+      *stream << ",\n";
+      if (++failures == 1) {
+        *stream << kIndent << "\"" << "failures" << "\": [\n";
+      }
+      const std::string location =
+          internal::FormatCompilerIndependentFileLocation(part.file_name(),
+                                                          part.line_number());
+      const std::string message = EscapeJson(location + "\n" + part.message());
+      *stream << kIndent << "  {\n"
+              << kIndent << "    \"failure\": \"" << message << "\",\n"
+              << kIndent << "    \"type\": \"\"\n"
+              << kIndent << "  }";
+    }
+  }
+
+  if (failures > 0)
+    *stream << "\n" << kIndent << "]";
+  *stream << "\n" << Indent(8) << "}";
+}
+
+// Prints an JSON representation of a TestSuite object
+void JsonUnitTestResultPrinter::PrintJsonTestSuite(
+    std::ostream* stream, const TestSuite& test_suite) {
+  const std::string kTestsuite = "testsuite";
+  const std::string kIndent = Indent(6);
+
+  *stream << Indent(4) << "{\n";
+  OutputJsonKey(stream, kTestsuite, "name", test_suite.name(), kIndent);
+  OutputJsonKey(stream, kTestsuite, "tests", test_suite.reportable_test_count(),
+                kIndent);
+  if (!GTEST_FLAG(list_tests)) {
+    OutputJsonKey(stream, kTestsuite, "failures",
+                  test_suite.failed_test_count(), kIndent);
+    OutputJsonKey(stream, kTestsuite, "disabled",
+                  test_suite.reportable_disabled_test_count(), kIndent);
+    OutputJsonKey(stream, kTestsuite, "errors", 0, kIndent);
+    OutputJsonKey(
+        stream, kTestsuite, "timestamp",
+        FormatEpochTimeInMillisAsRFC3339(test_suite.start_timestamp()),
+        kIndent);
+    OutputJsonKey(stream, kTestsuite, "time",
+                  FormatTimeInMillisAsDuration(test_suite.elapsed_time()),
+                  kIndent, false);
+    *stream << TestPropertiesAsJson(test_suite.ad_hoc_test_result(), kIndent)
+            << ",\n";
+  }
+
+  *stream << kIndent << "\"" << kTestsuite << "\": [\n";
+
+  bool comma = false;
+  for (int i = 0; i < test_suite.total_test_count(); ++i) {
+    if (test_suite.GetTestInfo(i)->is_reportable()) {
+      if (comma) {
+        *stream << ",\n";
+      } else {
+        comma = true;
+      }
+      OutputJsonTestInfo(stream, test_suite.name(), *test_suite.GetTestInfo(i));
+    }
+  }
+  *stream << "\n" << kIndent << "]\n" << Indent(4) << "}";
+}
+
+// Prints a JSON summary of unit_test to output stream out.
+void JsonUnitTestResultPrinter::PrintJsonUnitTest(std::ostream* stream,
+                                                  const UnitTest& unit_test) {
+  const std::string kTestsuites = "testsuites";
+  const std::string kIndent = Indent(2);
+  *stream << "{\n";
+
+  OutputJsonKey(stream, kTestsuites, "tests", unit_test.reportable_test_count(),
+                kIndent);
+  OutputJsonKey(stream, kTestsuites, "failures", unit_test.failed_test_count(),
+                kIndent);
+  OutputJsonKey(stream, kTestsuites, "disabled",
+                unit_test.reportable_disabled_test_count(), kIndent);
+  OutputJsonKey(stream, kTestsuites, "errors", 0, kIndent);
+  if (GTEST_FLAG(shuffle)) {
+    OutputJsonKey(stream, kTestsuites, "random_seed", unit_test.random_seed(),
+                  kIndent);
+  }
+  OutputJsonKey(stream, kTestsuites, "timestamp",
+                FormatEpochTimeInMillisAsRFC3339(unit_test.start_timestamp()),
+                kIndent);
+  OutputJsonKey(stream, kTestsuites, "time",
+                FormatTimeInMillisAsDuration(unit_test.elapsed_time()), kIndent,
+                false);
+
+  *stream << TestPropertiesAsJson(unit_test.ad_hoc_test_result(), kIndent)
+          << ",\n";
+
+  OutputJsonKey(stream, kTestsuites, "name", "AllTests", kIndent);
+  *stream << kIndent << "\"" << kTestsuites << "\": [\n";
+
+  bool comma = false;
+  for (int i = 0; i < unit_test.total_test_suite_count(); ++i) {
+    if (unit_test.GetTestSuite(i)->reportable_test_count() > 0) {
+      if (comma) {
+        *stream << ",\n";
+      } else {
+        comma = true;
+      }
+      PrintJsonTestSuite(stream, *unit_test.GetTestSuite(i));
+    }
+  }
+
+  *stream << "\n" << kIndent << "]\n" << "}\n";
+}
+
+void JsonUnitTestResultPrinter::PrintJsonTestList(
+    std::ostream* stream, const std::vector<TestSuite*>& test_suites) {
+  const std::string kTestsuites = "testsuites";
+  const std::string kIndent = Indent(2);
+  *stream << "{\n";
+  int total_tests = 0;
+  for (auto test_suite : test_suites) {
+    total_tests += test_suite->total_test_count();
+  }
+  OutputJsonKey(stream, kTestsuites, "tests", total_tests, kIndent);
+
+  OutputJsonKey(stream, kTestsuites, "name", "AllTests", kIndent);
+  *stream << kIndent << "\"" << kTestsuites << "\": [\n";
+
+  for (size_t i = 0; i < test_suites.size(); ++i) {
+    if (i != 0) {
+      *stream << ",\n";
+    }
+    PrintJsonTestSuite(stream, *test_suites[i]);
+  }
+
+  *stream << "\n"
+          << kIndent << "]\n"
+          << "}\n";
+}
+// Produces a string representing the test properties in a result as
+// a JSON dictionary.
+std::string JsonUnitTestResultPrinter::TestPropertiesAsJson(
+    const TestResult& result, const std::string& indent) {
+  Message attributes;
+  for (int i = 0; i < result.test_property_count(); ++i) {
+    const TestProperty& property = result.GetTestProperty(i);
+    attributes << ",\n" << indent << "\"" << property.key() << "\": "
+               << "\"" << EscapeJson(property.value()) << "\"";
+  }
+  return attributes.GetString();
+}
+
+// End JsonUnitTestResultPrinter
+
+#if GTEST_CAN_STREAM_RESULTS_
+
+// Checks if str contains '=', '&', '%' or '\n' characters. If yes,
+// replaces them by "%xx" where xx is their hexadecimal value. For
+// example, replaces "=" with "%3D".  This algorithm is O(strlen(str))
+// in both time and space -- important as the input str may contain an
+// arbitrarily long test failure message and stack trace.
+std::string StreamingListener::UrlEncode(const char* str) {
+  std::string result;
+  result.reserve(strlen(str) + 1);
+  for (char ch = *str; ch != '\0'; ch = *++str) {
+    switch (ch) {
+      case '%':
+      case '=':
+      case '&':
+      case '\n':
+        result.append("%" + String::FormatByte(static_cast<unsigned char>(ch)));
+        break;
+      default:
+        result.push_back(ch);
+        break;
+    }
+  }
+  return result;
+}
+
+void StreamingListener::SocketWriter::MakeConnection() {
+  GTEST_CHECK_(sockfd_ == -1)
+      << "MakeConnection() can't be called when there is already a connection.";
+
+  addrinfo hints;
+  memset(&hints, 0, sizeof(hints));
+  hints.ai_family = AF_UNSPEC;    // To allow both IPv4 and IPv6 addresses.
+  hints.ai_socktype = SOCK_STREAM;
+  addrinfo* servinfo = nullptr;
+
+  // Use the getaddrinfo() to get a linked list of IP addresses for
+  // the given host name.
+  const int error_num = getaddrinfo(
+      host_name_.c_str(), port_num_.c_str(), &hints, &servinfo);
+  if (error_num != 0) {
+    GTEST_LOG_(WARNING) << "stream_result_to: getaddrinfo() failed: "
+                        << gai_strerror(error_num);
+  }
+
+  // Loop through all the results and connect to the first we can.
+  for (addrinfo* cur_addr = servinfo; sockfd_ == -1 && cur_addr != nullptr;
+       cur_addr = cur_addr->ai_next) {
+    sockfd_ = socket(
+        cur_addr->ai_family, cur_addr->ai_socktype, cur_addr->ai_protocol);
+    if (sockfd_ != -1) {
+      // Connect the client socket to the server socket.
+      if (connect(sockfd_, cur_addr->ai_addr, cur_addr->ai_addrlen) == -1) {
+        close(sockfd_);
+        sockfd_ = -1;
+      }
+    }
+  }
+
+  freeaddrinfo(servinfo);  // all done with this structure
+
+  if (sockfd_ == -1) {
+    GTEST_LOG_(WARNING) << "stream_result_to: failed to connect to "
+                        << host_name_ << ":" << port_num_;
+  }
+}
+
+// End of class Streaming Listener
+#endif  // GTEST_CAN_STREAM_RESULTS__
+
+// class OsStackTraceGetter
+
+const char* const OsStackTraceGetterInterface::kElidedFramesMarker =
+    "... " GTEST_NAME_ " internal frames ...";
+
+std::string OsStackTraceGetter::CurrentStackTrace(int max_depth, int skip_count)
+    GTEST_LOCK_EXCLUDED_(mutex_) {
+#if GTEST_HAS_ABSL
+  std::string result;
+
+  if (max_depth <= 0) {
+    return result;
+  }
+
+  max_depth = std::min(max_depth, kMaxStackTraceDepth);
+
+  std::vector<void*> raw_stack(max_depth);
+  // Skips the frames requested by the caller, plus this function.
+  const int raw_stack_size =
+      absl::GetStackTrace(&raw_stack[0], max_depth, skip_count + 1);
+
+  void* caller_frame = nullptr;
+  {
+    MutexLock lock(&mutex_);
+    caller_frame = caller_frame_;
+  }
+
+  for (int i = 0; i < raw_stack_size; ++i) {
+    if (raw_stack[i] == caller_frame &&
+        !GTEST_FLAG(show_internal_stack_frames)) {
+      // Add a marker to the trace and stop adding frames.
+      absl::StrAppend(&result, kElidedFramesMarker, "\n");
+      break;
+    }
+
+    char tmp[1024];
+    const char* symbol = "(unknown)";
+    if (absl::Symbolize(raw_stack[i], tmp, sizeof(tmp))) {
+      symbol = tmp;
+    }
+
+    char line[1024];
+    snprintf(line, sizeof(line), "  %p: %s\n", raw_stack[i], symbol);
+    result += line;
+  }
+
+  return result;
+
+#else  // !GTEST_HAS_ABSL
+  static_cast<void>(max_depth);
+  static_cast<void>(skip_count);
+  return "";
+#endif  // GTEST_HAS_ABSL
+}
+
+void OsStackTraceGetter::UponLeavingGTest() GTEST_LOCK_EXCLUDED_(mutex_) {
+#if GTEST_HAS_ABSL
+  void* caller_frame = nullptr;
+  if (absl::GetStackTrace(&caller_frame, 1, 3) <= 0) {
+    caller_frame = nullptr;
+  }
+
+  MutexLock lock(&mutex_);
+  caller_frame_ = caller_frame;
+#endif  // GTEST_HAS_ABSL
+}
+
+// A helper class that creates the premature-exit file in its
+// constructor and deletes the file in its destructor.
+class ScopedPrematureExitFile {
+ public:
+  explicit ScopedPrematureExitFile(const char* premature_exit_filepath)
+      : premature_exit_filepath_(premature_exit_filepath ?
+                                 premature_exit_filepath : "") {
+    // If a path to the premature-exit file is specified...
+    if (!premature_exit_filepath_.empty()) {
+      // create the file with a single "0" character in it.  I/O
+      // errors are ignored as there's nothing better we can do and we
+      // don't want to fail the test because of this.
+      FILE* pfile = posix::FOpen(premature_exit_filepath, "w");
+      fwrite("0", 1, 1, pfile);
+      fclose(pfile);
+    }
+  }
+
+  ~ScopedPrematureExitFile() {
+    if (!premature_exit_filepath_.empty()) {
+      int retval = remove(premature_exit_filepath_.c_str());
+      if (retval) {
+        GTEST_LOG_(ERROR) << "Failed to remove premature exit filepath \""
+                          << premature_exit_filepath_ << "\" with error "
+                          << retval;
+      }
+    }
+  }
+
+ private:
+  const std::string premature_exit_filepath_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(ScopedPrematureExitFile);
+};
+
+}  // namespace internal
+
+// class TestEventListeners
+
+TestEventListeners::TestEventListeners()
+    : repeater_(new internal::TestEventRepeater()),
+      default_result_printer_(nullptr),
+      default_xml_generator_(nullptr) {}
+
+TestEventListeners::~TestEventListeners() { delete repeater_; }
+
+// Returns the standard listener responsible for the default console
+// output.  Can be removed from the listeners list to shut down default
+// console output.  Note that removing this object from the listener list
+// with Release transfers its ownership to the user.
+void TestEventListeners::Append(TestEventListener* listener) {
+  repeater_->Append(listener);
+}
+
+// Removes the given event listener from the list and returns it.  It then
+// becomes the caller's responsibility to delete the listener. Returns
+// NULL if the listener is not found in the list.
+TestEventListener* TestEventListeners::Release(TestEventListener* listener) {
+  if (listener == default_result_printer_)
+    default_result_printer_ = nullptr;
+  else if (listener == default_xml_generator_)
+    default_xml_generator_ = nullptr;
+  return repeater_->Release(listener);
+}
+
+// Returns repeater that broadcasts the TestEventListener events to all
+// subscribers.
+TestEventListener* TestEventListeners::repeater() { return repeater_; }
+
+// Sets the default_result_printer attribute to the provided listener.
+// The listener is also added to the listener list and previous
+// default_result_printer is removed from it and deleted. The listener can
+// also be NULL in which case it will not be added to the list. Does
+// nothing if the previous and the current listener objects are the same.
+void TestEventListeners::SetDefaultResultPrinter(TestEventListener* listener) {
+  if (default_result_printer_ != listener) {
+    // It is an error to pass this method a listener that is already in the
+    // list.
+    delete Release(default_result_printer_);
+    default_result_printer_ = listener;
+    if (listener != nullptr) Append(listener);
+  }
+}
+
+// Sets the default_xml_generator attribute to the provided listener.  The
+// listener is also added to the listener list and previous
+// default_xml_generator is removed from it and deleted. The listener can
+// also be NULL in which case it will not be added to the list. Does
+// nothing if the previous and the current listener objects are the same.
+void TestEventListeners::SetDefaultXmlGenerator(TestEventListener* listener) {
+  if (default_xml_generator_ != listener) {
+    // It is an error to pass this method a listener that is already in the
+    // list.
+    delete Release(default_xml_generator_);
+    default_xml_generator_ = listener;
+    if (listener != nullptr) Append(listener);
+  }
+}
+
+// Controls whether events will be forwarded by the repeater to the
+// listeners in the list.
+bool TestEventListeners::EventForwardingEnabled() const {
+  return repeater_->forwarding_enabled();
+}
+
+void TestEventListeners::SuppressEventForwarding() {
+  repeater_->set_forwarding_enabled(false);
+}
+
+// class UnitTest
+
+// Gets the singleton UnitTest object.  The first time this method is
+// called, a UnitTest object is constructed and returned.  Consecutive
+// calls will return the same object.
+//
+// We don't protect this under mutex_ as a user is not supposed to
+// call this before main() starts, from which point on the return
+// value will never change.
+UnitTest* UnitTest::GetInstance() {
+  // CodeGear C++Builder insists on a public destructor for the
+  // default implementation.  Use this implementation to keep good OO
+  // design with private destructor.
+
+#if defined(__BORLANDC__)
+  static UnitTest* const instance = new UnitTest;
+  return instance;
+#else
+  static UnitTest instance;
+  return &instance;
+#endif  // defined(__BORLANDC__)
+}
+
+// Gets the number of successful test suites.
+int UnitTest::successful_test_suite_count() const {
+  return impl()->successful_test_suite_count();
+}
+
+// Gets the number of failed test suites.
+int UnitTest::failed_test_suite_count() const {
+  return impl()->failed_test_suite_count();
+}
+
+// Gets the number of all test suites.
+int UnitTest::total_test_suite_count() const {
+  return impl()->total_test_suite_count();
+}
+
+// Gets the number of all test suites that contain at least one test
+// that should run.
+int UnitTest::test_suite_to_run_count() const {
+  return impl()->test_suite_to_run_count();
+}
+
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+int UnitTest::successful_test_case_count() const {
+  return impl()->successful_test_suite_count();
+}
+int UnitTest::failed_test_case_count() const {
+  return impl()->failed_test_suite_count();
+}
+int UnitTest::total_test_case_count() const {
+  return impl()->total_test_suite_count();
+}
+int UnitTest::test_case_to_run_count() const {
+  return impl()->test_suite_to_run_count();
+}
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+// Gets the number of successful tests.
+int UnitTest::successful_test_count() const {
+  return impl()->successful_test_count();
+}
+
+// Gets the number of skipped tests.
+int UnitTest::skipped_test_count() const {
+  return impl()->skipped_test_count();
+}
+
+// Gets the number of failed tests.
+int UnitTest::failed_test_count() const { return impl()->failed_test_count(); }
+
+// Gets the number of disabled tests that will be reported in the XML report.
+int UnitTest::reportable_disabled_test_count() const {
+  return impl()->reportable_disabled_test_count();
+}
+
+// Gets the number of disabled tests.
+int UnitTest::disabled_test_count() const {
+  return impl()->disabled_test_count();
+}
+
+// Gets the number of tests to be printed in the XML report.
+int UnitTest::reportable_test_count() const {
+  return impl()->reportable_test_count();
+}
+
+// Gets the number of all tests.
+int UnitTest::total_test_count() const { return impl()->total_test_count(); }
+
+// Gets the number of tests that should run.
+int UnitTest::test_to_run_count() const { return impl()->test_to_run_count(); }
+
+// Gets the time of the test program start, in ms from the start of the
+// UNIX epoch.
+internal::TimeInMillis UnitTest::start_timestamp() const {
+    return impl()->start_timestamp();
+}
+
+// Gets the elapsed time, in milliseconds.
+internal::TimeInMillis UnitTest::elapsed_time() const {
+  return impl()->elapsed_time();
+}
+
+// Returns true if and only if the unit test passed (i.e. all test suites
+// passed).
+bool UnitTest::Passed() const { return impl()->Passed(); }
+
+// Returns true if and only if the unit test failed (i.e. some test suite
+// failed or something outside of all tests failed).
+bool UnitTest::Failed() const { return impl()->Failed(); }
+
+// Gets the i-th test suite among all the test suites. i can range from 0 to
+// total_test_suite_count() - 1. If i is not in that range, returns NULL.
+const TestSuite* UnitTest::GetTestSuite(int i) const {
+  return impl()->GetTestSuite(i);
+}
+
+//  Legacy API is deprecated but still available
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+const TestCase* UnitTest::GetTestCase(int i) const {
+  return impl()->GetTestCase(i);
+}
+#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+// Returns the TestResult containing information on test failures and
+// properties logged outside of individual test suites.
+const TestResult& UnitTest::ad_hoc_test_result() const {
+  return *impl()->ad_hoc_test_result();
+}
+
+// Gets the i-th test suite among all the test suites. i can range from 0 to
+// total_test_suite_count() - 1. If i is not in that range, returns NULL.
+TestSuite* UnitTest::GetMutableTestSuite(int i) {
+  return impl()->GetMutableSuiteCase(i);
+}
+
+// Returns the list of event listeners that can be used to track events
+// inside Google Test.
+TestEventListeners& UnitTest::listeners() {
+  return *impl()->listeners();
+}
+
+// Registers and returns a global test environment.  When a test
+// program is run, all global test environments will be set-up in the
+// order they were registered.  After all tests in the program have
+// finished, all global test environments will be torn-down in the
+// *reverse* order they were registered.
+//
+// The UnitTest object takes ownership of the given environment.
+//
+// We don't protect this under mutex_, as we only support calling it
+// from the main thread.
+Environment* UnitTest::AddEnvironment(Environment* env) {
+  if (env == nullptr) {
+    return nullptr;
+  }
+
+  impl_->environments().push_back(env);
+  return env;
+}
+
+// Adds a TestPartResult to the current TestResult object.  All Google Test
+// assertion macros (e.g. ASSERT_TRUE, EXPECT_EQ, etc) eventually call
+// this to report their results.  The user code should use the
+// assertion macros instead of calling this directly.
+void UnitTest::AddTestPartResult(
+    TestPartResult::Type result_type,
+    const char* file_name,
+    int line_number,
+    const std::string& message,
+    const std::string& os_stack_trace) GTEST_LOCK_EXCLUDED_(mutex_) {
+  Message msg;
+  msg << message;
+
+  internal::MutexLock lock(&mutex_);
+  if (impl_->gtest_trace_stack().size() > 0) {
+    msg << "\n" << GTEST_NAME_ << " trace:";
+
+    for (size_t i = impl_->gtest_trace_stack().size(); i > 0; --i) {
+      const internal::TraceInfo& trace = impl_->gtest_trace_stack()[i - 1];
+      msg << "\n" << internal::FormatFileLocation(trace.file, trace.line)
+          << " " << trace.message;
+    }
+  }
+
+  if (os_stack_trace.c_str() != nullptr && !os_stack_trace.empty()) {
+    msg << internal::kStackTraceMarker << os_stack_trace;
+  }
+
+  const TestPartResult result = TestPartResult(
+      result_type, file_name, line_number, msg.GetString().c_str());
+  impl_->GetTestPartResultReporterForCurrentThread()->
+      ReportTestPartResult(result);
+
+  if (result_type != TestPartResult::kSuccess &&
+      result_type != TestPartResult::kSkip) {
+    // gtest_break_on_failure takes precedence over
+    // gtest_throw_on_failure.  This allows a user to set the latter
+    // in the code (perhaps in order to use Google Test assertions
+    // with another testing framework) and specify the former on the
+    // command line for debugging.
+    if (GTEST_FLAG(break_on_failure)) {
+#if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT
+      // Using DebugBreak on Windows allows gtest to still break into a debugger
+      // when a failure happens and both the --gtest_break_on_failure and
+      // the --gtest_catch_exceptions flags are specified.
+      DebugBreak();
+#elif (!defined(__native_client__)) &&            \
+    ((defined(__clang__) || defined(__GNUC__)) && \
+     (defined(__x86_64__) || defined(__i386__)))
+      // with clang/gcc we can achieve the same effect on x86 by invoking int3
+      asm("int3");
+#else
+      // Dereference nullptr through a volatile pointer to prevent the compiler
+      // from removing. We use this rather than abort() or __builtin_trap() for
+      // portability: some debuggers don't correctly trap abort().
+      *static_cast<volatile int*>(nullptr) = 1;
+#endif  // GTEST_OS_WINDOWS
+    } else if (GTEST_FLAG(throw_on_failure)) {
+#if GTEST_HAS_EXCEPTIONS
+      throw internal::GoogleTestFailureException(result);
+#else
+      // We cannot call abort() as it generates a pop-up in debug mode
+      // that cannot be suppressed in VC 7.1 or below.
+      exit(1);
+#endif
+    }
+  }
+}
+
+// Adds a TestProperty to the current TestResult object when invoked from
+// inside a test, to current TestSuite's ad_hoc_test_result_ when invoked
+// from SetUpTestSuite or TearDownTestSuite, or to the global property set
+// when invoked elsewhere.  If the result already contains a property with
+// the same key, the value will be updated.
+void UnitTest::RecordProperty(const std::string& key,
+                              const std::string& value) {
+  impl_->RecordProperty(TestProperty(key, value));
+}
+
+// Runs all tests in this UnitTest object and prints the result.
+// Returns 0 if successful, or 1 otherwise.
+//
+// We don't protect this under mutex_, as we only support calling it
+// from the main thread.
+int UnitTest::Run() {
+  const bool in_death_test_child_process =
+      internal::GTEST_FLAG(internal_run_death_test).length() > 0;
+
+  // Google Test implements this protocol for catching that a test
+  // program exits before returning control to Google Test:
+  //
+  //   1. Upon start, Google Test creates a file whose absolute path
+  //      is specified by the environment variable
+  //      TEST_PREMATURE_EXIT_FILE.
+  //   2. When Google Test has finished its work, it deletes the file.
+  //
+  // This allows a test runner to set TEST_PREMATURE_EXIT_FILE before
+  // running a Google-Test-based test program and check the existence
+  // of the file at the end of the test execution to see if it has
+  // exited prematurely.
+
+  // If we are in the child process of a death test, don't
+  // create/delete the premature exit file, as doing so is unnecessary
+  // and will confuse the parent process.  Otherwise, create/delete
+  // the file upon entering/leaving this function.  If the program
+  // somehow exits before this function has a chance to return, the
+  // premature-exit file will be left undeleted, causing a test runner
+  // that understands the premature-exit-file protocol to report the
+  // test as having failed.
+  const internal::ScopedPrematureExitFile premature_exit_file(
+      in_death_test_child_process
+          ? nullptr
+          : internal::posix::GetEnv("TEST_PREMATURE_EXIT_FILE"));
+
+  // Captures the value of GTEST_FLAG(catch_exceptions).  This value will be
+  // used for the duration of the program.
+  impl()->set_catch_exceptions(GTEST_FLAG(catch_exceptions));
+
+#if GTEST_OS_WINDOWS
+  // Either the user wants Google Test to catch exceptions thrown by the
+  // tests or this is executing in the context of death test child
+  // process. In either case the user does not want to see pop-up dialogs
+  // about crashes - they are expected.
+  if (impl()->catch_exceptions() || in_death_test_child_process) {
+# if !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT
+    // SetErrorMode doesn't exist on CE.
+    SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOALIGNMENTFAULTEXCEPT |
+                 SEM_NOGPFAULTERRORBOX | SEM_NOOPENFILEERRORBOX);
+# endif  // !GTEST_OS_WINDOWS_MOBILE
+
+# if (defined(_MSC_VER) || GTEST_OS_WINDOWS_MINGW) && !GTEST_OS_WINDOWS_MOBILE
+    // Death test children can be terminated with _abort().  On Windows,
+    // _abort() can show a dialog with a warning message.  This forces the
+    // abort message to go to stderr instead.
+    _set_error_mode(_OUT_TO_STDERR);
+# endif
+
+# if defined(_MSC_VER) && !GTEST_OS_WINDOWS_MOBILE
+    // In the debug version, Visual Studio pops up a separate dialog
+    // offering a choice to debug the aborted program. We need to suppress
+    // this dialog or it will pop up for every EXPECT/ASSERT_DEATH statement
+    // executed. Google Test will notify the user of any unexpected
+    // failure via stderr.
+    if (!GTEST_FLAG(break_on_failure))
+      _set_abort_behavior(
+          0x0,                                    // Clear the following flags:
+          _WRITE_ABORT_MSG | _CALL_REPORTFAULT);  // pop-up window, core dump.
+# endif
+
+    // In debug mode, the Windows CRT can crash with an assertion over invalid
+    // input (e.g. passing an invalid file descriptor).  The default handling
+    // for these assertions is to pop up a dialog and wait for user input.
+    // Instead ask the CRT to dump such assertions to stderr non-interactively.
+    if (!IsDebuggerPresent()) {
+      (void)_CrtSetReportMode(_CRT_ASSERT,
+                              _CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG);
+      (void)_CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
+    }
+  }
+#endif  // GTEST_OS_WINDOWS
+
+  return internal::HandleExceptionsInMethodIfSupported(
+      impl(),
+      &internal::UnitTestImpl::RunAllTests,
+      "auxiliary test code (environments or event listeners)") ? 0 : 1;
+}
+
+// Returns the working directory when the first TEST() or TEST_F() was
+// executed.
+const char* UnitTest::original_working_dir() const {
+  return impl_->original_working_dir_.c_str();
+}
+
+// Returns the TestSuite object for the test that's currently running,
+// or NULL if no test is running.
+const TestSuite* UnitTest::current_test_suite() const
+    GTEST_LOCK_EXCLUDED_(mutex_) {
+  internal::MutexLock lock(&mutex_);
+  return impl_->current_test_suite();
+}
+
+// Legacy API is still available but deprecated
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+const TestCase* UnitTest::current_test_case() const
+    GTEST_LOCK_EXCLUDED_(mutex_) {
+  internal::MutexLock lock(&mutex_);
+  return impl_->current_test_suite();
+}
+#endif
+
+// Returns the TestInfo object for the test that's currently running,
+// or NULL if no test is running.
+const TestInfo* UnitTest::current_test_info() const
+    GTEST_LOCK_EXCLUDED_(mutex_) {
+  internal::MutexLock lock(&mutex_);
+  return impl_->current_test_info();
+}
+
+// Returns the random seed used at the start of the current test run.
+int UnitTest::random_seed() const { return impl_->random_seed(); }
+
+// Returns ParameterizedTestSuiteRegistry object used to keep track of
+// value-parameterized tests and instantiate and register them.
+internal::ParameterizedTestSuiteRegistry&
+UnitTest::parameterized_test_registry() GTEST_LOCK_EXCLUDED_(mutex_) {
+  return impl_->parameterized_test_registry();
+}
+
+// Creates an empty UnitTest.
+UnitTest::UnitTest() {
+  impl_ = new internal::UnitTestImpl(this);
+}
+
+// Destructor of UnitTest.
+UnitTest::~UnitTest() {
+  delete impl_;
+}
+
+// Pushes a trace defined by SCOPED_TRACE() on to the per-thread
+// Google Test trace stack.
+void UnitTest::PushGTestTrace(const internal::TraceInfo& trace)
+    GTEST_LOCK_EXCLUDED_(mutex_) {
+  internal::MutexLock lock(&mutex_);
+  impl_->gtest_trace_stack().push_back(trace);
+}
+
+// Pops a trace from the per-thread Google Test trace stack.
+void UnitTest::PopGTestTrace()
+    GTEST_LOCK_EXCLUDED_(mutex_) {
+  internal::MutexLock lock(&mutex_);
+  impl_->gtest_trace_stack().pop_back();
+}
+
+namespace internal {
+
+UnitTestImpl::UnitTestImpl(UnitTest* parent)
+    : parent_(parent),
+      GTEST_DISABLE_MSC_WARNINGS_PUSH_(4355 /* using this in initializer */)
+          default_global_test_part_result_reporter_(this),
+      default_per_thread_test_part_result_reporter_(this),
+      GTEST_DISABLE_MSC_WARNINGS_POP_() global_test_part_result_repoter_(
+          &default_global_test_part_result_reporter_),
+      per_thread_test_part_result_reporter_(
+          &default_per_thread_test_part_result_reporter_),
+      parameterized_test_registry_(),
+      parameterized_tests_registered_(false),
+      last_death_test_suite_(-1),
+      current_test_suite_(nullptr),
+      current_test_info_(nullptr),
+      ad_hoc_test_result_(),
+      os_stack_trace_getter_(nullptr),
+      post_flag_parse_init_performed_(false),
+      random_seed_(0),  // Will be overridden by the flag before first use.
+      random_(0),       // Will be reseeded before first use.
+      start_timestamp_(0),
+      elapsed_time_(0),
+#if GTEST_HAS_DEATH_TEST
+      death_test_factory_(new DefaultDeathTestFactory),
+#endif
+      // Will be overridden by the flag before first use.
+      catch_exceptions_(false) {
+  listeners()->SetDefaultResultPrinter(new PrettyUnitTestResultPrinter);
+}
+
+UnitTestImpl::~UnitTestImpl() {
+  // Deletes every TestSuite.
+  ForEach(test_suites_, internal::Delete<TestSuite>);
+
+  // Deletes every Environment.
+  ForEach(environments_, internal::Delete<Environment>);
+
+  delete os_stack_trace_getter_;
+}
+
+// Adds a TestProperty to the current TestResult object when invoked in a
+// context of a test, to current test suite's ad_hoc_test_result when invoke
+// from SetUpTestSuite/TearDownTestSuite, or to the global property set
+// otherwise.  If the result already contains a property with the same key,
+// the value will be updated.
+void UnitTestImpl::RecordProperty(const TestProperty& test_property) {
+  std::string xml_element;
+  TestResult* test_result;  // TestResult appropriate for property recording.
+
+  if (current_test_info_ != nullptr) {
+    xml_element = "testcase";
+    test_result = &(current_test_info_->result_);
+  } else if (current_test_suite_ != nullptr) {
+    xml_element = "testsuite";
+    test_result = &(current_test_suite_->ad_hoc_test_result_);
+  } else {
+    xml_element = "testsuites";
+    test_result = &ad_hoc_test_result_;
+  }
+  test_result->RecordProperty(xml_element, test_property);
+}
+
+#if GTEST_HAS_DEATH_TEST
+// Disables event forwarding if the control is currently in a death test
+// subprocess. Must not be called before InitGoogleTest.
+void UnitTestImpl::SuppressTestEventsIfInSubprocess() {
+  if (internal_run_death_test_flag_.get() != nullptr)
+    listeners()->SuppressEventForwarding();
+}
+#endif  // GTEST_HAS_DEATH_TEST
+
+// Initializes event listeners performing XML output as specified by
+// UnitTestOptions. Must not be called before InitGoogleTest.
+void UnitTestImpl::ConfigureXmlOutput() {
+  const std::string& output_format = UnitTestOptions::GetOutputFormat();
+  if (output_format == "xml") {
+    listeners()->SetDefaultXmlGenerator(new XmlUnitTestResultPrinter(
+        UnitTestOptions::GetAbsolutePathToOutputFile().c_str()));
+  } else if (output_format == "json") {
+    listeners()->SetDefaultXmlGenerator(new JsonUnitTestResultPrinter(
+        UnitTestOptions::GetAbsolutePathToOutputFile().c_str()));
+  } else if (output_format != "") {
+    GTEST_LOG_(WARNING) << "WARNING: unrecognized output format \""
+                        << output_format << "\" ignored.";
+  }
+}
+
+#if GTEST_CAN_STREAM_RESULTS_
+// Initializes event listeners for streaming test results in string form.
+// Must not be called before InitGoogleTest.
+void UnitTestImpl::ConfigureStreamingOutput() {
+  const std::string& target = GTEST_FLAG(stream_result_to);
+  if (!target.empty()) {
+    const size_t pos = target.find(':');
+    if (pos != std::string::npos) {
+      listeners()->Append(new StreamingListener(target.substr(0, pos),
+                                                target.substr(pos+1)));
+    } else {
+      GTEST_LOG_(WARNING) << "unrecognized streaming target \"" << target
+                          << "\" ignored.";
+    }
+  }
+}
+#endif  // GTEST_CAN_STREAM_RESULTS_
+
+// Performs initialization dependent upon flag values obtained in
+// ParseGoogleTestFlagsOnly.  Is called from InitGoogleTest after the call to
+// ParseGoogleTestFlagsOnly.  In case a user neglects to call InitGoogleTest
+// this function is also called from RunAllTests.  Since this function can be
+// called more than once, it has to be idempotent.
+void UnitTestImpl::PostFlagParsingInit() {
+  // Ensures that this function does not execute more than once.
+  if (!post_flag_parse_init_performed_) {
+    post_flag_parse_init_performed_ = true;
+
+#if defined(GTEST_CUSTOM_TEST_EVENT_LISTENER_)
+    // Register to send notifications about key process state changes.
+    listeners()->Append(new GTEST_CUSTOM_TEST_EVENT_LISTENER_());
+#endif  // defined(GTEST_CUSTOM_TEST_EVENT_LISTENER_)
+
+#if GTEST_HAS_DEATH_TEST
+    InitDeathTestSubprocessControlInfo();
+    SuppressTestEventsIfInSubprocess();
+#endif  // GTEST_HAS_DEATH_TEST
+
+    // Registers parameterized tests. This makes parameterized tests
+    // available to the UnitTest reflection API without running
+    // RUN_ALL_TESTS.
+    RegisterParameterizedTests();
+
+    // Configures listeners for XML output. This makes it possible for users
+    // to shut down the default XML output before invoking RUN_ALL_TESTS.
+    ConfigureXmlOutput();
+
+#if GTEST_CAN_STREAM_RESULTS_
+    // Configures listeners for streaming test results to the specified server.
+    ConfigureStreamingOutput();
+#endif  // GTEST_CAN_STREAM_RESULTS_
+
+#if GTEST_HAS_ABSL
+    if (GTEST_FLAG(install_failure_signal_handler)) {
+      absl::FailureSignalHandlerOptions options;
+      absl::InstallFailureSignalHandler(options);
+    }
+#endif  // GTEST_HAS_ABSL
+  }
+}
+
+// A predicate that checks the name of a TestSuite against a known
+// value.
+//
+// This is used for implementation of the UnitTest class only.  We put
+// it in the anonymous namespace to prevent polluting the outer
+// namespace.
+//
+// TestSuiteNameIs is copyable.
+class TestSuiteNameIs {
+ public:
+  // Constructor.
+  explicit TestSuiteNameIs(const std::string& name) : name_(name) {}
+
+  // Returns true if and only if the name of test_suite matches name_.
+  bool operator()(const TestSuite* test_suite) const {
+    return test_suite != nullptr &&
+           strcmp(test_suite->name(), name_.c_str()) == 0;
+  }
+
+ private:
+  std::string name_;
+};
+
+// Finds and returns a TestSuite with the given name.  If one doesn't
+// exist, creates one and returns it.  It's the CALLER'S
+// RESPONSIBILITY to ensure that this function is only called WHEN THE
+// TESTS ARE NOT SHUFFLED.
+//
+// Arguments:
+//
+//   test_suite_name: name of the test suite
+//   type_param:     the name of the test suite's type parameter, or NULL if
+//                   this is not a typed or a type-parameterized test suite.
+//   set_up_tc:      pointer to the function that sets up the test suite
+//   tear_down_tc:   pointer to the function that tears down the test suite
+TestSuite* UnitTestImpl::GetTestSuite(
+    const char* test_suite_name, const char* type_param,
+    internal::SetUpTestSuiteFunc set_up_tc,
+    internal::TearDownTestSuiteFunc tear_down_tc) {
+  // Can we find a TestSuite with the given name?
+  const auto test_suite =
+      std::find_if(test_suites_.rbegin(), test_suites_.rend(),
+                   TestSuiteNameIs(test_suite_name));
+
+  if (test_suite != test_suites_.rend()) return *test_suite;
+
+  // No.  Let's create one.
+  auto* const new_test_suite =
+      new TestSuite(test_suite_name, type_param, set_up_tc, tear_down_tc);
+
+  // Is this a death test suite?
+  if (internal::UnitTestOptions::MatchesFilter(test_suite_name,
+                                               kDeathTestSuiteFilter)) {
+    // Yes.  Inserts the test suite after the last death test suite
+    // defined so far.  This only works when the test suites haven't
+    // been shuffled.  Otherwise we may end up running a death test
+    // after a non-death test.
+    ++last_death_test_suite_;
+    test_suites_.insert(test_suites_.begin() + last_death_test_suite_,
+                        new_test_suite);
+  } else {
+    // No.  Appends to the end of the list.
+    test_suites_.push_back(new_test_suite);
+  }
+
+  test_suite_indices_.push_back(static_cast<int>(test_suite_indices_.size()));
+  return new_test_suite;
+}
+
+// Helpers for setting up / tearing down the given environment.  They
+// are for use in the ForEach() function.
+static void SetUpEnvironment(Environment* env) { env->SetUp(); }
+static void TearDownEnvironment(Environment* env) { env->TearDown(); }
+
+// Runs all tests in this UnitTest object, prints the result, and
+// returns true if all tests are successful.  If any exception is
+// thrown during a test, the test is considered to be failed, but the
+// rest of the tests will still be run.
+//
+// When parameterized tests are enabled, it expands and registers
+// parameterized tests first in RegisterParameterizedTests().
+// All other functions called from RunAllTests() may safely assume that
+// parameterized tests are ready to be counted and run.
+bool UnitTestImpl::RunAllTests() {
+  // True if and only if Google Test is initialized before RUN_ALL_TESTS() is
+  // called.
+  const bool gtest_is_initialized_before_run_all_tests = GTestIsInitialized();
+
+  // Do not run any test if the --help flag was specified.
+  if (g_help_flag)
+    return true;
+
+  // Repeats the call to the post-flag parsing initialization in case the
+  // user didn't call InitGoogleTest.
+  PostFlagParsingInit();
+
+  // Even if sharding is not on, test runners may want to use the
+  // GTEST_SHARD_STATUS_FILE to query whether the test supports the sharding
+  // protocol.
+  internal::WriteToShardStatusFileIfNeeded();
+
+  // True if and only if we are in a subprocess for running a thread-safe-style
+  // death test.
+  bool in_subprocess_for_death_test = false;
+
+#if GTEST_HAS_DEATH_TEST
+  in_subprocess_for_death_test =
+      (internal_run_death_test_flag_.get() != nullptr);
+# if defined(GTEST_EXTRA_DEATH_TEST_CHILD_SETUP_)
+  if (in_subprocess_for_death_test) {
+    GTEST_EXTRA_DEATH_TEST_CHILD_SETUP_();
+  }
+# endif  // defined(GTEST_EXTRA_DEATH_TEST_CHILD_SETUP_)
+#endif  // GTEST_HAS_DEATH_TEST
+
+  const bool should_shard = ShouldShard(kTestTotalShards, kTestShardIndex,
+                                        in_subprocess_for_death_test);
+
+  // Compares the full test names with the filter to decide which
+  // tests to run.
+  const bool has_tests_to_run = FilterTests(should_shard
+                                              ? HONOR_SHARDING_PROTOCOL
+                                              : IGNORE_SHARDING_PROTOCOL) > 0;
+
+  // Lists the tests and exits if the --gtest_list_tests flag was specified.
+  if (GTEST_FLAG(list_tests)) {
+    // This must be called *after* FilterTests() has been called.
+    ListTestsMatchingFilter();
+    return true;
+  }
+
+  random_seed_ = GTEST_FLAG(shuffle) ?
+      GetRandomSeedFromFlag(GTEST_FLAG(random_seed)) : 0;
+
+  // True if and only if at least one test has failed.
+  bool failed = false;
+
+  TestEventListener* repeater = listeners()->repeater();
+
+  start_timestamp_ = GetTimeInMillis();
+  repeater->OnTestProgramStart(*parent_);
+
+  // How many times to repeat the tests?  We don't want to repeat them
+  // when we are inside the subprocess of a death test.
+  const int repeat = in_subprocess_for_death_test ? 1 : GTEST_FLAG(repeat);
+  // Repeats forever if the repeat count is negative.
+  const bool gtest_repeat_forever = repeat < 0;
+  for (int i = 0; gtest_repeat_forever || i != repeat; i++) {
+    // We want to preserve failures generated by ad-hoc test
+    // assertions executed before RUN_ALL_TESTS().
+    ClearNonAdHocTestResult();
+
+    const TimeInMillis start = GetTimeInMillis();
+
+    // Shuffles test suites and tests if requested.
+    if (has_tests_to_run && GTEST_FLAG(shuffle)) {
+      random()->Reseed(static_cast<UInt32>(random_seed_));
+      // This should be done before calling OnTestIterationStart(),
+      // such that a test event listener can see the actual test order
+      // in the event.
+      ShuffleTests();
+    }
+
+    // Tells the unit test event listeners that the tests are about to start.
+    repeater->OnTestIterationStart(*parent_, i);
+
+    // Runs each test suite if there is at least one test to run.
+    if (has_tests_to_run) {
+      // Sets up all environments beforehand.
+      repeater->OnEnvironmentsSetUpStart(*parent_);
+      ForEach(environments_, SetUpEnvironment);
+      repeater->OnEnvironmentsSetUpEnd(*parent_);
+
+      // Runs the tests only if there was no fatal failure or skip triggered
+      // during global set-up.
+      if (Test::IsSkipped()) {
+        // Emit diagnostics when global set-up calls skip, as it will not be
+        // emitted by default.
+        TestResult& test_result =
+            *internal::GetUnitTestImpl()->current_test_result();
+        for (int j = 0; j < test_result.total_part_count(); ++j) {
+          const TestPartResult& test_part_result =
+              test_result.GetTestPartResult(j);
+          if (test_part_result.type() == TestPartResult::kSkip) {
+            const std::string& result = test_part_result.message();
+            printf("%s\n", result.c_str());
+          }
+        }
+        fflush(stdout);
+      } else if (!Test::HasFatalFailure()) {
+        for (int test_index = 0; test_index < total_test_suite_count();
+             test_index++) {
+          GetMutableSuiteCase(test_index)->Run();
+        }
+      }
+
+      // Tears down all environments in reverse order afterwards.
+      repeater->OnEnvironmentsTearDownStart(*parent_);
+      std::for_each(environments_.rbegin(), environments_.rend(),
+                    TearDownEnvironment);
+      repeater->OnEnvironmentsTearDownEnd(*parent_);
+    }
+
+    elapsed_time_ = GetTimeInMillis() - start;
+
+    // Tells the unit test event listener that the tests have just finished.
+    repeater->OnTestIterationEnd(*parent_, i);
+
+    // Gets the result and clears it.
+    if (!Passed()) {
+      failed = true;
+    }
+
+    // Restores the original test order after the iteration.  This
+    // allows the user to quickly repro a failure that happens in the
+    // N-th iteration without repeating the first (N - 1) iterations.
+    // This is not enclosed in "if (GTEST_FLAG(shuffle)) { ... }", in
+    // case the user somehow changes the value of the flag somewhere
+    // (it's always safe to unshuffle the tests).
+    UnshuffleTests();
+
+    if (GTEST_FLAG(shuffle)) {
+      // Picks a new random seed for each iteration.
+      random_seed_ = GetNextRandomSeed(random_seed_);
+    }
+  }
+
+  repeater->OnTestProgramEnd(*parent_);
+
+  if (!gtest_is_initialized_before_run_all_tests) {
+    ColoredPrintf(
+        COLOR_RED,
+        "\nIMPORTANT NOTICE - DO NOT IGNORE:\n"
+        "This test program did NOT call " GTEST_INIT_GOOGLE_TEST_NAME_
+        "() before calling RUN_ALL_TESTS(). This is INVALID. Soon " GTEST_NAME_
+        " will start to enforce the valid usage. "
+        "Please fix it ASAP, or IT WILL START TO FAIL.\n");  // NOLINT
+#if GTEST_FOR_GOOGLE_
+    ColoredPrintf(COLOR_RED,
+                  "For more details, see http://wiki/Main/ValidGUnitMain.\n");
+#endif  // GTEST_FOR_GOOGLE_
+  }
+
+  return !failed;
+}
+
+// Reads the GTEST_SHARD_STATUS_FILE environment variable, and creates the file
+// if the variable is present. If a file already exists at this location, this
+// function will write over it. If the variable is present, but the file cannot
+// be created, prints an error and exits.
+void WriteToShardStatusFileIfNeeded() {
+  const char* const test_shard_file = posix::GetEnv(kTestShardStatusFile);
+  if (test_shard_file != nullptr) {
+    FILE* const file = posix::FOpen(test_shard_file, "w");
+    if (file == nullptr) {
+      ColoredPrintf(COLOR_RED,
+                    "Could not write to the test shard status file \"%s\" "
+                    "specified by the %s environment variable.\n",
+                    test_shard_file, kTestShardStatusFile);
+      fflush(stdout);
+      exit(EXIT_FAILURE);
+    }
+    fclose(file);
+  }
+}
+
+// Checks whether sharding is enabled by examining the relevant
+// environment variable values. If the variables are present,
+// but inconsistent (i.e., shard_index >= total_shards), prints
+// an error and exits. If in_subprocess_for_death_test, sharding is
+// disabled because it must only be applied to the original test
+// process. Otherwise, we could filter out death tests we intended to execute.
+bool ShouldShard(const char* total_shards_env,
+                 const char* shard_index_env,
+                 bool in_subprocess_for_death_test) {
+  if (in_subprocess_for_death_test) {
+    return false;
+  }
+
+  const Int32 total_shards = Int32FromEnvOrDie(total_shards_env, -1);
+  const Int32 shard_index = Int32FromEnvOrDie(shard_index_env, -1);
+
+  if (total_shards == -1 && shard_index == -1) {
+    return false;
+  } else if (total_shards == -1 && shard_index != -1) {
+    const Message msg = Message()
+      << "Invalid environment variables: you have "
+      << kTestShardIndex << " = " << shard_index
+      << ", but have left " << kTestTotalShards << " unset.\n";
+    ColoredPrintf(COLOR_RED, "%s", msg.GetString().c_str());
+    fflush(stdout);
+    exit(EXIT_FAILURE);
+  } else if (total_shards != -1 && shard_index == -1) {
+    const Message msg = Message()
+      << "Invalid environment variables: you have "
+      << kTestTotalShards << " = " << total_shards
+      << ", but have left " << kTestShardIndex << " unset.\n";
+    ColoredPrintf(COLOR_RED, "%s", msg.GetString().c_str());
+    fflush(stdout);
+    exit(EXIT_FAILURE);
+  } else if (shard_index < 0 || shard_index >= total_shards) {
+    const Message msg = Message()
+      << "Invalid environment variables: we require 0 <= "
+      << kTestShardIndex << " < " << kTestTotalShards
+      << ", but you have " << kTestShardIndex << "=" << shard_index
+      << ", " << kTestTotalShards << "=" << total_shards << ".\n";
+    ColoredPrintf(COLOR_RED, "%s", msg.GetString().c_str());
+    fflush(stdout);
+    exit(EXIT_FAILURE);
+  }
+
+  return total_shards > 1;
+}
+
+// Parses the environment variable var as an Int32. If it is unset,
+// returns default_val. If it is not an Int32, prints an error
+// and aborts.
+Int32 Int32FromEnvOrDie(const char* var, Int32 default_val) {
+  const char* str_val = posix::GetEnv(var);
+  if (str_val == nullptr) {
+    return default_val;
+  }
+
+  Int32 result;
+  if (!ParseInt32(Message() << "The value of environment variable " << var,
+                  str_val, &result)) {
+    exit(EXIT_FAILURE);
+  }
+  return result;
+}
+
+// Given the total number of shards, the shard index, and the test id,
+// returns true if and only if the test should be run on this shard. The test id
+// is some arbitrary but unique non-negative integer assigned to each test
+// method. Assumes that 0 <= shard_index < total_shards.
+bool ShouldRunTestOnShard(int total_shards, int shard_index, int test_id) {
+  return (test_id % total_shards) == shard_index;
+}
+
+// Compares the name of each test with the user-specified filter to
+// decide whether the test should be run, then records the result in
+// each TestSuite and TestInfo object.
+// If shard_tests == true, further filters tests based on sharding
+// variables in the environment - see
+// https://github.com/google/googletest/blob/master/googletest/docs/advanced.md
+// . Returns the number of tests that should run.
+int UnitTestImpl::FilterTests(ReactionToSharding shard_tests) {
+  const Int32 total_shards = shard_tests == HONOR_SHARDING_PROTOCOL ?
+      Int32FromEnvOrDie(kTestTotalShards, -1) : -1;
+  const Int32 shard_index = shard_tests == HONOR_SHARDING_PROTOCOL ?
+      Int32FromEnvOrDie(kTestShardIndex, -1) : -1;
+
+  // num_runnable_tests are the number of tests that will
+  // run across all shards (i.e., match filter and are not disabled).
+  // num_selected_tests are the number of tests to be run on
+  // this shard.
+  int num_runnable_tests = 0;
+  int num_selected_tests = 0;
+  for (auto* test_suite : test_suites_) {
+    const std::string& test_suite_name = test_suite->name();
+    test_suite->set_should_run(false);
+
+    for (size_t j = 0; j < test_suite->test_info_list().size(); j++) {
+      TestInfo* const test_info = test_suite->test_info_list()[j];
+      const std::string test_name(test_info->name());
+      // A test is disabled if test suite name or test name matches
+      // kDisableTestFilter.
+      const bool is_disabled = internal::UnitTestOptions::MatchesFilter(
+                                   test_suite_name, kDisableTestFilter) ||
+                               internal::UnitTestOptions::MatchesFilter(
+                                   test_name, kDisableTestFilter);
+      test_info->is_disabled_ = is_disabled;
+
+      const bool matches_filter = internal::UnitTestOptions::FilterMatchesTest(
+          test_suite_name, test_name);
+      test_info->matches_filter_ = matches_filter;
+
+      const bool is_runnable =
+          (GTEST_FLAG(also_run_disabled_tests) || !is_disabled) &&
+          matches_filter;
+
+      const bool is_in_another_shard =
+          shard_tests != IGNORE_SHARDING_PROTOCOL &&
+          !ShouldRunTestOnShard(total_shards, shard_index, num_runnable_tests);
+      test_info->is_in_another_shard_ = is_in_another_shard;
+      const bool is_selected = is_runnable && !is_in_another_shard;
+
+      num_runnable_tests += is_runnable;
+      num_selected_tests += is_selected;
+
+      test_info->should_run_ = is_selected;
+      test_suite->set_should_run(test_suite->should_run() || is_selected);
+    }
+  }
+  return num_selected_tests;
+}
+
+// Prints the given C-string on a single line by replacing all '\n'
+// characters with string "\\n".  If the output takes more than
+// max_length characters, only prints the first max_length characters
+// and "...".
+static void PrintOnOneLine(const char* str, int max_length) {
+  if (str != nullptr) {
+    for (int i = 0; *str != '\0'; ++str) {
+      if (i >= max_length) {
+        printf("...");
+        break;
+      }
+      if (*str == '\n') {
+        printf("\\n");
+        i += 2;
+      } else {
+        printf("%c", *str);
+        ++i;
+      }
+    }
+  }
+}
+
+// Prints the names of the tests matching the user-specified filter flag.
+void UnitTestImpl::ListTestsMatchingFilter() {
+  // Print at most this many characters for each type/value parameter.
+  const int kMaxParamLength = 250;
+
+  for (auto* test_suite : test_suites_) {
+    bool printed_test_suite_name = false;
+
+    for (size_t j = 0; j < test_suite->test_info_list().size(); j++) {
+      const TestInfo* const test_info = test_suite->test_info_list()[j];
+      if (test_info->matches_filter_) {
+        if (!printed_test_suite_name) {
+          printed_test_suite_name = true;
+          printf("%s.", test_suite->name());
+          if (test_suite->type_param() != nullptr) {
+            printf("  # %s = ", kTypeParamLabel);
+            // We print the type parameter on a single line to make
+            // the output easy to parse by a program.
+            PrintOnOneLine(test_suite->type_param(), kMaxParamLength);
+          }
+          printf("\n");
+        }
+        printf("  %s", test_info->name());
+        if (test_info->value_param() != nullptr) {
+          printf("  # %s = ", kValueParamLabel);
+          // We print the value parameter on a single line to make the
+          // output easy to parse by a program.
+          PrintOnOneLine(test_info->value_param(), kMaxParamLength);
+        }
+        printf("\n");
+      }
+    }
+  }
+  fflush(stdout);
+  const std::string& output_format = UnitTestOptions::GetOutputFormat();
+  if (output_format == "xml" || output_format == "json") {
+    FILE* fileout = OpenFileForWriting(
+        UnitTestOptions::GetAbsolutePathToOutputFile().c_str());
+    std::stringstream stream;
+    if (output_format == "xml") {
+      XmlUnitTestResultPrinter(
+          UnitTestOptions::GetAbsolutePathToOutputFile().c_str())
+          .PrintXmlTestsList(&stream, test_suites_);
+    } else if (output_format == "json") {
+      JsonUnitTestResultPrinter(
+          UnitTestOptions::GetAbsolutePathToOutputFile().c_str())
+          .PrintJsonTestList(&stream, test_suites_);
+    }
+    fprintf(fileout, "%s", StringStreamToString(&stream).c_str());
+    fclose(fileout);
+  }
+}
+
+// Sets the OS stack trace getter.
+//
+// Does nothing if the input and the current OS stack trace getter are
+// the same; otherwise, deletes the old getter and makes the input the
+// current getter.
+void UnitTestImpl::set_os_stack_trace_getter(
+    OsStackTraceGetterInterface* getter) {
+  if (os_stack_trace_getter_ != getter) {
+    delete os_stack_trace_getter_;
+    os_stack_trace_getter_ = getter;
+  }
+}
+
+// Returns the current OS stack trace getter if it is not NULL;
+// otherwise, creates an OsStackTraceGetter, makes it the current
+// getter, and returns it.
+OsStackTraceGetterInterface* UnitTestImpl::os_stack_trace_getter() {
+  if (os_stack_trace_getter_ == nullptr) {
+#ifdef GTEST_OS_STACK_TRACE_GETTER_
+    os_stack_trace_getter_ = new GTEST_OS_STACK_TRACE_GETTER_;
+#else
+    os_stack_trace_getter_ = new OsStackTraceGetter;
+#endif  // GTEST_OS_STACK_TRACE_GETTER_
+  }
+
+  return os_stack_trace_getter_;
+}
+
+// Returns the most specific TestResult currently running.
+TestResult* UnitTestImpl::current_test_result() {
+  if (current_test_info_ != nullptr) {
+    return &current_test_info_->result_;
+  }
+  if (current_test_suite_ != nullptr) {
+    return &current_test_suite_->ad_hoc_test_result_;
+  }
+  return &ad_hoc_test_result_;
+}
+
+// Shuffles all test suites, and the tests within each test suite,
+// making sure that death tests are still run first.
+void UnitTestImpl::ShuffleTests() {
+  // Shuffles the death test suites.
+  ShuffleRange(random(), 0, last_death_test_suite_ + 1, &test_suite_indices_);
+
+  // Shuffles the non-death test suites.
+  ShuffleRange(random(), last_death_test_suite_ + 1,
+               static_cast<int>(test_suites_.size()), &test_suite_indices_);
+
+  // Shuffles the tests inside each test suite.
+  for (auto& test_suite : test_suites_) {
+    test_suite->ShuffleTests(random());
+  }
+}
+
+// Restores the test suites and tests to their order before the first shuffle.
+void UnitTestImpl::UnshuffleTests() {
+  for (size_t i = 0; i < test_suites_.size(); i++) {
+    // Unshuffles the tests in each test suite.
+    test_suites_[i]->UnshuffleTests();
+    // Resets the index of each test suite.
+    test_suite_indices_[i] = static_cast<int>(i);
+  }
+}
+
+// Returns the current OS stack trace as an std::string.
+//
+// The maximum number of stack frames to be included is specified by
+// the gtest_stack_trace_depth flag.  The skip_count parameter
+// specifies the number of top frames to be skipped, which doesn't
+// count against the number of frames to be included.
+//
+// For example, if Foo() calls Bar(), which in turn calls
+// GetCurrentOsStackTraceExceptTop(..., 1), Foo() will be included in
+// the trace but Bar() and GetCurrentOsStackTraceExceptTop() won't.
+std::string GetCurrentOsStackTraceExceptTop(UnitTest* /*unit_test*/,
+                                            int skip_count) {
+  // We pass skip_count + 1 to skip this wrapper function in addition
+  // to what the user really wants to skip.
+  return GetUnitTestImpl()->CurrentOsStackTraceExceptTop(skip_count + 1);
+}
+
+// Used by the GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_ macro to
+// suppress unreachable code warnings.
+namespace {
+class ClassUniqueToAlwaysTrue {};
+}
+
+bool IsTrue(bool condition) { return condition; }
+
+bool AlwaysTrue() {
+#if GTEST_HAS_EXCEPTIONS
+  // This condition is always false so AlwaysTrue() never actually throws,
+  // but it makes the compiler think that it may throw.
+  if (IsTrue(false))
+    throw ClassUniqueToAlwaysTrue();
+#endif  // GTEST_HAS_EXCEPTIONS
+  return true;
+}
+
+// If *pstr starts with the given prefix, modifies *pstr to be right
+// past the prefix and returns true; otherwise leaves *pstr unchanged
+// and returns false.  None of pstr, *pstr, and prefix can be NULL.
+bool SkipPrefix(const char* prefix, const char** pstr) {
+  const size_t prefix_len = strlen(prefix);
+  if (strncmp(*pstr, prefix, prefix_len) == 0) {
+    *pstr += prefix_len;
+    return true;
+  }
+  return false;
+}
+
+// Parses a string as a command line flag.  The string should have
+// the format "--flag=value".  When def_optional is true, the "=value"
+// part can be omitted.
+//
+// Returns the value of the flag, or NULL if the parsing failed.
+static const char* ParseFlagValue(const char* str, const char* flag,
+                                  bool def_optional) {
+  // str and flag must not be NULL.
+  if (str == nullptr || flag == nullptr) return nullptr;
+
+  // The flag must start with "--" followed by GTEST_FLAG_PREFIX_.
+  const std::string flag_str = std::string("--") + GTEST_FLAG_PREFIX_ + flag;
+  const size_t flag_len = flag_str.length();
+  if (strncmp(str, flag_str.c_str(), flag_len) != 0) return nullptr;
+
+  // Skips the flag name.
+  const char* flag_end = str + flag_len;
+
+  // When def_optional is true, it's OK to not have a "=value" part.
+  if (def_optional && (flag_end[0] == '\0')) {
+    return flag_end;
+  }
+
+  // If def_optional is true and there are more characters after the
+  // flag name, or if def_optional is false, there must be a '=' after
+  // the flag name.
+  if (flag_end[0] != '=') return nullptr;
+
+  // Returns the string after "=".
+  return flag_end + 1;
+}
+
+// Parses a string for a bool flag, in the form of either
+// "--flag=value" or "--flag".
+//
+// In the former case, the value is taken as true as long as it does
+// not start with '0', 'f', or 'F'.
+//
+// In the latter case, the value is taken as true.
+//
+// On success, stores the value of the flag in *value, and returns
+// true.  On failure, returns false without changing *value.
+static bool ParseBoolFlag(const char* str, const char* flag, bool* value) {
+  // Gets the value of the flag as a string.
+  const char* const value_str = ParseFlagValue(str, flag, true);
+
+  // Aborts if the parsing failed.
+  if (value_str == nullptr) return false;
+
+  // Converts the string value to a bool.
+  *value = !(*value_str == '0' || *value_str == 'f' || *value_str == 'F');
+  return true;
+}
+
+// Parses a string for an Int32 flag, in the form of
+// "--flag=value".
+//
+// On success, stores the value of the flag in *value, and returns
+// true.  On failure, returns false without changing *value.
+bool ParseInt32Flag(const char* str, const char* flag, Int32* value) {
+  // Gets the value of the flag as a string.
+  const char* const value_str = ParseFlagValue(str, flag, false);
+
+  // Aborts if the parsing failed.
+  if (value_str == nullptr) return false;
+
+  // Sets *value to the value of the flag.
+  return ParseInt32(Message() << "The value of flag --" << flag,
+                    value_str, value);
+}
+
+// Parses a string for a string flag, in the form of
+// "--flag=value".
+//
+// On success, stores the value of the flag in *value, and returns
+// true.  On failure, returns false without changing *value.
+template <typename String>
+static bool ParseStringFlag(const char* str, const char* flag, String* value) {
+  // Gets the value of the flag as a string.
+  const char* const value_str = ParseFlagValue(str, flag, false);
+
+  // Aborts if the parsing failed.
+  if (value_str == nullptr) return false;
+
+  // Sets *value to the value of the flag.
+  *value = value_str;
+  return true;
+}
+
+// Determines whether a string has a prefix that Google Test uses for its
+// flags, i.e., starts with GTEST_FLAG_PREFIX_ or GTEST_FLAG_PREFIX_DASH_.
+// If Google Test detects that a command line flag has its prefix but is not
+// recognized, it will print its help message. Flags starting with
+// GTEST_INTERNAL_PREFIX_ followed by "internal_" are considered Google Test
+// internal flags and do not trigger the help message.
+static bool HasGoogleTestFlagPrefix(const char* str) {
+  return (SkipPrefix("--", &str) ||
+          SkipPrefix("-", &str) ||
+          SkipPrefix("/", &str)) &&
+         !SkipPrefix(GTEST_FLAG_PREFIX_ "internal_", &str) &&
+         (SkipPrefix(GTEST_FLAG_PREFIX_, &str) ||
+          SkipPrefix(GTEST_FLAG_PREFIX_DASH_, &str));
+}
+
+// Prints a string containing code-encoded text.  The following escape
+// sequences can be used in the string to control the text color:
+//
+//   @@    prints a single '@' character.
+//   @R    changes the color to red.
+//   @G    changes the color to green.
+//   @Y    changes the color to yellow.
+//   @D    changes to the default terminal text color.
+//
+static void PrintColorEncoded(const char* str) {
+  GTestColor color = COLOR_DEFAULT;  // The current color.
+
+  // Conceptually, we split the string into segments divided by escape
+  // sequences.  Then we print one segment at a time.  At the end of
+  // each iteration, the str pointer advances to the beginning of the
+  // next segment.
+  for (;;) {
+    const char* p = strchr(str, '@');
+    if (p == nullptr) {
+      ColoredPrintf(color, "%s", str);
+      return;
+    }
+
+    ColoredPrintf(color, "%s", std::string(str, p).c_str());
+
+    const char ch = p[1];
+    str = p + 2;
+    if (ch == '@') {
+      ColoredPrintf(color, "@");
+    } else if (ch == 'D') {
+      color = COLOR_DEFAULT;
+    } else if (ch == 'R') {
+      color = COLOR_RED;
+    } else if (ch == 'G') {
+      color = COLOR_GREEN;
+    } else if (ch == 'Y') {
+      color = COLOR_YELLOW;
+    } else {
+      --str;
+    }
+  }
+}
+
+static const char kColorEncodedHelpMessage[] =
+"This program contains tests written using " GTEST_NAME_ ". You can use the\n"
+"following command line flags to control its behavior:\n"
+"\n"
+"Test Selection:\n"
+"  @G--" GTEST_FLAG_PREFIX_ "list_tests@D\n"
+"      List the names of all tests instead of running them. The name of\n"
+"      TEST(Foo, Bar) is \"Foo.Bar\".\n"
+"  @G--" GTEST_FLAG_PREFIX_ "filter=@YPOSTIVE_PATTERNS"
+    "[@G-@YNEGATIVE_PATTERNS]@D\n"
+"      Run only the tests whose name matches one of the positive patterns but\n"
+"      none of the negative patterns. '?' matches any single character; '*'\n"
+"      matches any substring; ':' separates two patterns.\n"
+"  @G--" GTEST_FLAG_PREFIX_ "also_run_disabled_tests@D\n"
+"      Run all disabled tests too.\n"
+"\n"
+"Test Execution:\n"
+"  @G--" GTEST_FLAG_PREFIX_ "repeat=@Y[COUNT]@D\n"
+"      Run the tests repeatedly; use a negative count to repeat forever.\n"
+"  @G--" GTEST_FLAG_PREFIX_ "shuffle@D\n"
+"      Randomize tests' orders on every iteration.\n"
+"  @G--" GTEST_FLAG_PREFIX_ "random_seed=@Y[NUMBER]@D\n"
+"      Random number seed to use for shuffling test orders (between 1 and\n"
+"      99999, or 0 to use a seed based on the current time).\n"
+"\n"
+"Test Output:\n"
+"  @G--" GTEST_FLAG_PREFIX_ "color=@Y(@Gyes@Y|@Gno@Y|@Gauto@Y)@D\n"
+"      Enable/disable colored output. The default is @Gauto@D.\n"
+"  -@G-" GTEST_FLAG_PREFIX_ "print_time=0@D\n"
+"      Don't print the elapsed time of each test.\n"
+"  @G--" GTEST_FLAG_PREFIX_ "output=@Y(@Gjson@Y|@Gxml@Y)[@G:@YDIRECTORY_PATH@G"
+    GTEST_PATH_SEP_ "@Y|@G:@YFILE_PATH]@D\n"
+"      Generate a JSON or XML report in the given directory or with the given\n"
+"      file name. @YFILE_PATH@D defaults to @Gtest_detail.xml@D.\n"
+# if GTEST_CAN_STREAM_RESULTS_
+"  @G--" GTEST_FLAG_PREFIX_ "stream_result_to=@YHOST@G:@YPORT@D\n"
+"      Stream test results to the given server.\n"
+# endif  // GTEST_CAN_STREAM_RESULTS_
+"\n"
+"Assertion Behavior:\n"
+# if GTEST_HAS_DEATH_TEST && !GTEST_OS_WINDOWS
+"  @G--" GTEST_FLAG_PREFIX_ "death_test_style=@Y(@Gfast@Y|@Gthreadsafe@Y)@D\n"
+"      Set the default death test style.\n"
+# endif  // GTEST_HAS_DEATH_TEST && !GTEST_OS_WINDOWS
+"  @G--" GTEST_FLAG_PREFIX_ "break_on_failure@D\n"
+"      Turn assertion failures into debugger break-points.\n"
+"  @G--" GTEST_FLAG_PREFIX_ "throw_on_failure@D\n"
+"      Turn assertion failures into C++ exceptions for use by an external\n"
+"      test framework.\n"
+"  @G--" GTEST_FLAG_PREFIX_ "catch_exceptions=0@D\n"
+"      Do not report exceptions as test failures. Instead, allow them\n"
+"      to crash the program or throw a pop-up (on Windows).\n"
+"\n"
+"Except for @G--" GTEST_FLAG_PREFIX_ "list_tests@D, you can alternatively set "
+    "the corresponding\n"
+"environment variable of a flag (all letters in upper-case). For example, to\n"
+"disable colored text output, you can either specify @G--" GTEST_FLAG_PREFIX_
+    "color=no@D or set\n"
+"the @G" GTEST_FLAG_PREFIX_UPPER_ "COLOR@D environment variable to @Gno@D.\n"
+"\n"
+"For more information, please read the " GTEST_NAME_ " documentation at\n"
+"@G" GTEST_PROJECT_URL_ "@D. If you find a bug in " GTEST_NAME_ "\n"
+"(not one in your own code or tests), please report it to\n"
+"@G<" GTEST_DEV_EMAIL_ ">@D.\n";
+
+static bool ParseGoogleTestFlag(const char* const arg) {
+  return ParseBoolFlag(arg, kAlsoRunDisabledTestsFlag,
+                       &GTEST_FLAG(also_run_disabled_tests)) ||
+      ParseBoolFlag(arg, kBreakOnFailureFlag,
+                    &GTEST_FLAG(break_on_failure)) ||
+      ParseBoolFlag(arg, kCatchExceptionsFlag,
+                    &GTEST_FLAG(catch_exceptions)) ||
+      ParseStringFlag(arg, kColorFlag, &GTEST_FLAG(color)) ||
+      ParseStringFlag(arg, kDeathTestStyleFlag,
+                      &GTEST_FLAG(death_test_style)) ||
+      ParseBoolFlag(arg, kDeathTestUseFork,
+                    &GTEST_FLAG(death_test_use_fork)) ||
+      ParseStringFlag(arg, kFilterFlag, &GTEST_FLAG(filter)) ||
+      ParseStringFlag(arg, kInternalRunDeathTestFlag,
+                      &GTEST_FLAG(internal_run_death_test)) ||
+      ParseBoolFlag(arg, kListTestsFlag, &GTEST_FLAG(list_tests)) ||
+      ParseStringFlag(arg, kOutputFlag, &GTEST_FLAG(output)) ||
+      ParseBoolFlag(arg, kPrintTimeFlag, &GTEST_FLAG(print_time)) ||
+      ParseBoolFlag(arg, kPrintUTF8Flag, &GTEST_FLAG(print_utf8)) ||
+      ParseInt32Flag(arg, kRandomSeedFlag, &GTEST_FLAG(random_seed)) ||
+      ParseInt32Flag(arg, kRepeatFlag, &GTEST_FLAG(repeat)) ||
+      ParseBoolFlag(arg, kShuffleFlag, &GTEST_FLAG(shuffle)) ||
+      ParseInt32Flag(arg, kStackTraceDepthFlag,
+                     &GTEST_FLAG(stack_trace_depth)) ||
+      ParseStringFlag(arg, kStreamResultToFlag,
+                      &GTEST_FLAG(stream_result_to)) ||
+      ParseBoolFlag(arg, kThrowOnFailureFlag,
+                    &GTEST_FLAG(throw_on_failure));
+}
+
+#if GTEST_USE_OWN_FLAGFILE_FLAG_
+static void LoadFlagsFromFile(const std::string& path) {
+  FILE* flagfile = posix::FOpen(path.c_str(), "r");
+  if (!flagfile) {
+    GTEST_LOG_(FATAL) << "Unable to open file \"" << GTEST_FLAG(flagfile)
+                      << "\"";
+  }
+  std::string contents(ReadEntireFile(flagfile));
+  posix::FClose(flagfile);
+  std::vector<std::string> lines;
+  SplitString(contents, '\n', &lines);
+  for (size_t i = 0; i < lines.size(); ++i) {
+    if (lines[i].empty())
+      continue;
+    if (!ParseGoogleTestFlag(lines[i].c_str()))
+      g_help_flag = true;
+  }
+}
+#endif  // GTEST_USE_OWN_FLAGFILE_FLAG_
+
+// Parses the command line for Google Test flags, without initializing
+// other parts of Google Test.  The type parameter CharType can be
+// instantiated to either char or wchar_t.
+template <typename CharType>
+void ParseGoogleTestFlagsOnlyImpl(int* argc, CharType** argv) {
+  for (int i = 1; i < *argc; i++) {
+    const std::string arg_string = StreamableToString(argv[i]);
+    const char* const arg = arg_string.c_str();
+
+    using internal::ParseBoolFlag;
+    using internal::ParseInt32Flag;
+    using internal::ParseStringFlag;
+
+    bool remove_flag = false;
+    if (ParseGoogleTestFlag(arg)) {
+      remove_flag = true;
+#if GTEST_USE_OWN_FLAGFILE_FLAG_
+    } else if (ParseStringFlag(arg, kFlagfileFlag, &GTEST_FLAG(flagfile))) {
+      LoadFlagsFromFile(GTEST_FLAG(flagfile));
+      remove_flag = true;
+#endif  // GTEST_USE_OWN_FLAGFILE_FLAG_
+    } else if (arg_string == "--help" || arg_string == "-h" ||
+               arg_string == "-?" || arg_string == "/?" ||
+               HasGoogleTestFlagPrefix(arg)) {
+      // Both help flag and unrecognized Google Test flags (excluding
+      // internal ones) trigger help display.
+      g_help_flag = true;
+    }
+
+    if (remove_flag) {
+      // Shift the remainder of the argv list left by one.  Note
+      // that argv has (*argc + 1) elements, the last one always being
+      // NULL.  The following loop moves the trailing NULL element as
+      // well.
+      for (int j = i; j != *argc; j++) {
+        argv[j] = argv[j + 1];
+      }
+
+      // Decrements the argument count.
+      (*argc)--;
+
+      // We also need to decrement the iterator as we just removed
+      // an element.
+      i--;
+    }
+  }
+
+  if (g_help_flag) {
+    // We print the help here instead of in RUN_ALL_TESTS(), as the
+    // latter may not be called at all if the user is using Google
+    // Test with another testing framework.
+    PrintColorEncoded(kColorEncodedHelpMessage);
+  }
+}
+
+// Parses the command line for Google Test flags, without initializing
+// other parts of Google Test.
+void ParseGoogleTestFlagsOnly(int* argc, char** argv) {
+  ParseGoogleTestFlagsOnlyImpl(argc, argv);
+
+  // Fix the value of *_NSGetArgc() on macOS, but if and only if
+  // *_NSGetArgv() == argv
+  // Only applicable to char** version of argv
+#if GTEST_OS_MAC
+#ifndef GTEST_OS_IOS
+  if (*_NSGetArgv() == argv) {
+    *_NSGetArgc() = *argc;
+  }
+#endif
+#endif
+}
+void ParseGoogleTestFlagsOnly(int* argc, wchar_t** argv) {
+  ParseGoogleTestFlagsOnlyImpl(argc, argv);
+}
+
+// The internal implementation of InitGoogleTest().
+//
+// The type parameter CharType can be instantiated to either char or
+// wchar_t.
+template <typename CharType>
+void InitGoogleTestImpl(int* argc, CharType** argv) {
+  // We don't want to run the initialization code twice.
+  if (GTestIsInitialized()) return;
+
+  if (*argc <= 0) return;
+
+  g_argvs.clear();
+  for (int i = 0; i != *argc; i++) {
+    g_argvs.push_back(StreamableToString(argv[i]));
+  }
+
+#if GTEST_HAS_ABSL
+  absl::InitializeSymbolizer(g_argvs[0].c_str());
+#endif  // GTEST_HAS_ABSL
+
+  ParseGoogleTestFlagsOnly(argc, argv);
+  GetUnitTestImpl()->PostFlagParsingInit();
+}
+
+}  // namespace internal
+
+// Initializes Google Test.  This must be called before calling
+// RUN_ALL_TESTS().  In particular, it parses a command line for the
+// flags that Google Test recognizes.  Whenever a Google Test flag is
+// seen, it is removed from argv, and *argc is decremented.
+//
+// No value is returned.  Instead, the Google Test flag variables are
+// updated.
+//
+// Calling the function for the second time has no user-visible effect.
+void InitGoogleTest(int* argc, char** argv) {
+#if defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+  GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_(argc, argv);
+#else  // defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+  internal::InitGoogleTestImpl(argc, argv);
+#endif  // defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+}
+
+// This overloaded version can be used in Windows programs compiled in
+// UNICODE mode.
+void InitGoogleTest(int* argc, wchar_t** argv) {
+#if defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+  GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_(argc, argv);
+#else  // defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+  internal::InitGoogleTestImpl(argc, argv);
+#endif  // defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+}
+
+// This overloaded version can be used on Arduino/embedded platforms where
+// there is no argc/argv.
+void InitGoogleTest() {
+  // Since Arduino doesn't have a command line, fake out the argc/argv arguments
+  int argc = 1;
+  const auto arg0 = "dummy";
+  char* argv0 = const_cast<char*>(arg0);
+  char** argv = &argv0;
+
+#if defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+  GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_(&argc, argv);
+#else  // defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+  internal::InitGoogleTestImpl(&argc, argv);
+#endif  // defined(GTEST_CUSTOM_INIT_GOOGLE_TEST_FUNCTION_)
+}
+
+std::string TempDir() {
+#if defined(GTEST_CUSTOM_TEMPDIR_FUNCTION_)
+  return GTEST_CUSTOM_TEMPDIR_FUNCTION_();
+#endif
+
+#if GTEST_OS_WINDOWS_MOBILE
+  return "\\temp\\";
+#elif GTEST_OS_WINDOWS
+  const char* temp_dir = internal::posix::GetEnv("TEMP");
+  if (temp_dir == nullptr || temp_dir[0] == '\0')
+    return "\\temp\\";
+  else if (temp_dir[strlen(temp_dir) - 1] == '\\')
+    return temp_dir;
+  else
+    return std::string(temp_dir) + "\\";
+#elif GTEST_OS_LINUX_ANDROID
+  return "/sdcard/";
+#else
+  return "/tmp/";
+#endif  // GTEST_OS_WINDOWS_MOBILE
+}
+
+// Class ScopedTrace
+
+// Pushes the given source file location and message onto a per-thread
+// trace stack maintained by Google Test.
+void ScopedTrace::PushTrace(const char* file, int line, std::string message) {
+  internal::TraceInfo trace;
+  trace.file = file;
+  trace.line = line;
+  trace.message.swap(message);
+
+  UnitTest::GetInstance()->PushGTestTrace(trace);
+}
+
+// Pops the info pushed by the c'tor.
+ScopedTrace::~ScopedTrace()
+    GTEST_LOCK_EXCLUDED_(&UnitTest::mutex_) {
+  UnitTest::GetInstance()->PopGTestTrace();
+}
+
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googletest/src/gtest_main.cc b/build/_deps/googletest-src/googletest/src/gtest_main.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f6e1dd96fb3b374fa1f22be5f87c208e1bcc9ec4
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/src/gtest_main.cc
@@ -0,0 +1,47 @@
+// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <cstdio>
+#include "gtest/gtest.h"
+
+#ifdef ARDUINO
+void setup() {
+  testing::InitGoogleTest();
+}
+
+void loop() { RUN_ALL_TESTS(); }
+
+#else
+
+GTEST_API_ int main(int argc, char **argv) {
+  printf("Running main() from %s\n", __FILE__);
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
+#endif
diff --git a/build/_deps/googletest-src/googletest/test/BUILD.bazel b/build/_deps/googletest-src/googletest/test/BUILD.bazel
new file mode 100644
index 0000000000000000000000000000000000000000..156d5d4b423ca79a8642a6535c8885108bf86767
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/BUILD.bazel
@@ -0,0 +1,521 @@
+# Copyright 2017 Google Inc.
+# All Rights Reserved.
+#
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Author: misterg@google.com (Gennadiy Civil)
+#
+# Bazel BUILD for The Google C++ Testing Framework (Google Test)
+
+load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_test")
+load("@rules_python//python:defs.bzl", "py_library", "py_test")
+
+licenses(["notice"])
+
+#on windows exclude gtest-tuple.h
+cc_test(
+    name = "gtest_all_test",
+    size = "small",
+    srcs = glob(
+        include = [
+            "gtest-*.cc",
+            "googletest-*.cc",
+            "*.h",
+            "googletest/include/gtest/**/*.h",
+        ],
+        exclude = [
+            "gtest-unittest-api_test.cc",
+            "googletest/src/gtest-all.cc",
+            "gtest_all_test.cc",
+            "gtest-death-test_ex_test.cc",
+            "gtest-listener_test.cc",
+            "gtest-unittest-api_test.cc",
+            "googletest-param-test-test.cc",
+            "googletest-catch-exceptions-test_.cc",
+            "googletest-color-test_.cc",
+            "googletest-env-var-test_.cc",
+            "googletest-filter-unittest_.cc",
+            "googletest-break-on-failure-unittest_.cc",
+            "googletest-listener-test.cc",
+            "googletest-output-test_.cc",
+            "googletest-list-tests-unittest_.cc",
+            "googletest-shuffle-test_.cc",
+            "googletest-uninitialized-test_.cc",
+            "googletest-death-test_ex_test.cc",
+            "googletest-param-test-test",
+            "googletest-throw-on-failure-test_.cc",
+            "googletest-param-test-invalid-name1-test_.cc",
+            "googletest-param-test-invalid-name2-test_.cc",
+        ],
+    ) + select({
+        "//:windows": [],
+        "//conditions:default": [],
+    }),
+    copts = select({
+        "//:windows": ["-DGTEST_USE_OWN_TR1_TUPLE=0"],
+        "//conditions:default": ["-DGTEST_USE_OWN_TR1_TUPLE=1"],
+    }),
+    includes = [
+        "googletest",
+        "googletest/include",
+        "googletest/include/internal",
+        "googletest/test",
+    ],
+    linkopts = select({
+        "//:windows": [],
+        "//conditions:default": ["-pthread"],
+    }),
+    deps = ["//:gtest_main"],
+)
+
+# Tests death tests.
+cc_test(
+    name = "googletest-death-test-test",
+    size = "medium",
+    srcs = ["googletest-death-test-test.cc"],
+    deps = ["//:gtest_main"],
+)
+
+cc_test(
+    name = "gtest_test_macro_stack_footprint_test",
+    size = "small",
+    srcs = ["gtest_test_macro_stack_footprint_test.cc"],
+    deps = ["//:gtest"],
+)
+
+#These googletest tests have their own main()
+cc_test(
+    name = "googletest-listener-test",
+    size = "small",
+    srcs = ["googletest-listener-test.cc"],
+    deps = ["//:gtest_main"],
+)
+
+cc_test(
+    name = "gtest-unittest-api_test",
+    size = "small",
+    srcs = [
+        "gtest-unittest-api_test.cc",
+    ],
+    deps = [
+        "//:gtest",
+    ],
+)
+
+cc_test(
+    name = "googletest-param-test-test",
+    size = "small",
+    srcs = [
+        "googletest-param-test-test.cc",
+        "googletest-param-test-test.h",
+        "googletest-param-test2-test.cc",
+    ],
+    deps = ["//:gtest"],
+)
+
+cc_test(
+    name = "gtest_unittest",
+    size = "small",
+    srcs = ["gtest_unittest.cc"],
+    args = ["--heap_check=strict"],
+    shard_count = 2,
+    deps = ["//:gtest_main"],
+)
+
+#  Py tests
+
+py_library(
+    name = "gtest_test_utils",
+    testonly = 1,
+    srcs = ["gtest_test_utils.py"],
+)
+
+cc_binary(
+    name = "gtest_help_test_",
+    testonly = 1,
+    srcs = ["gtest_help_test_.cc"],
+    deps = ["//:gtest_main"],
+)
+
+py_test(
+    name = "gtest_help_test",
+    size = "small",
+    srcs = ["gtest_help_test.py"],
+    data = [":gtest_help_test_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-output-test_",
+    testonly = 1,
+    srcs = ["googletest-output-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-output-test",
+    size = "small",
+    srcs = ["googletest-output-test.py"],
+    args = select({
+        "//:has_absl": [],
+        "//conditions:default": ["--no_stacktrace_support"],
+    }),
+    data = [
+        "googletest-output-test-golden-lin.txt",
+        ":googletest-output-test_",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-color-test_",
+    testonly = 1,
+    srcs = ["googletest-color-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-color-test",
+    size = "small",
+    srcs = ["googletest-color-test.py"],
+    data = [":googletest-color-test_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-env-var-test_",
+    testonly = 1,
+    srcs = ["googletest-env-var-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-env-var-test",
+    size = "medium",
+    srcs = ["googletest-env-var-test.py"],
+    data = [":googletest-env-var-test_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-filter-unittest_",
+    testonly = 1,
+    srcs = ["googletest-filter-unittest_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-filter-unittest",
+    size = "medium",
+    srcs = ["googletest-filter-unittest.py"],
+    data = [":googletest-filter-unittest_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-break-on-failure-unittest_",
+    testonly = 1,
+    srcs = ["googletest-break-on-failure-unittest_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-break-on-failure-unittest",
+    size = "small",
+    srcs = ["googletest-break-on-failure-unittest.py"],
+    data = [":googletest-break-on-failure-unittest_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_test(
+    name = "gtest_assert_by_exception_test",
+    size = "small",
+    srcs = ["gtest_assert_by_exception_test.cc"],
+    deps = ["//:gtest"],
+)
+
+cc_binary(
+    name = "googletest-throw-on-failure-test_",
+    testonly = 1,
+    srcs = ["googletest-throw-on-failure-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-throw-on-failure-test",
+    size = "small",
+    srcs = ["googletest-throw-on-failure-test.py"],
+    data = [":googletest-throw-on-failure-test_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-list-tests-unittest_",
+    testonly = 1,
+    srcs = ["googletest-list-tests-unittest_.cc"],
+    deps = ["//:gtest"],
+)
+
+cc_test(
+    name = "gtest_skip_test",
+    size = "small",
+    srcs = ["gtest_skip_test.cc"],
+    deps = ["//:gtest_main"],
+)
+
+cc_test(
+    name = "gtest_skip_in_environment_setup_test",
+    size = "small",
+    srcs = ["gtest_skip_in_environment_setup_test.cc"],
+    deps = ["//:gtest_main"],
+)
+
+py_test(
+    name = "gtest_skip_environment_check_output_test",
+    size = "small",
+    srcs = ["gtest_skip_environment_check_output_test.py"],
+    data = [
+        ":gtest_skip_in_environment_setup_test",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+py_test(
+    name = "googletest-list-tests-unittest",
+    size = "small",
+    srcs = ["googletest-list-tests-unittest.py"],
+    data = [":googletest-list-tests-unittest_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-shuffle-test_",
+    srcs = ["googletest-shuffle-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-shuffle-test",
+    size = "small",
+    srcs = ["googletest-shuffle-test.py"],
+    data = [":googletest-shuffle-test_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-catch-exceptions-no-ex-test_",
+    testonly = 1,
+    srcs = ["googletest-catch-exceptions-test_.cc"],
+    deps = ["//:gtest_main"],
+)
+
+cc_binary(
+    name = "googletest-catch-exceptions-ex-test_",
+    testonly = 1,
+    srcs = ["googletest-catch-exceptions-test_.cc"],
+    copts = ["-fexceptions"],
+    deps = ["//:gtest_main"],
+)
+
+py_test(
+    name = "googletest-catch-exceptions-test",
+    size = "small",
+    srcs = ["googletest-catch-exceptions-test.py"],
+    data = [
+        ":googletest-catch-exceptions-ex-test_",
+        ":googletest-catch-exceptions-no-ex-test_",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "gtest_xml_output_unittest_",
+    testonly = 1,
+    srcs = ["gtest_xml_output_unittest_.cc"],
+    deps = ["//:gtest"],
+)
+
+cc_test(
+    name = "gtest_no_test_unittest",
+    size = "small",
+    srcs = ["gtest_no_test_unittest.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "gtest_xml_output_unittest",
+    size = "small",
+    srcs = [
+        "gtest_xml_output_unittest.py",
+        "gtest_xml_test_utils.py",
+    ],
+    args = select({
+        "//:has_absl": [],
+        "//conditions:default": ["--no_stacktrace_support"],
+    }),
+    data = [
+        # We invoke gtest_no_test_unittest to verify the XML output
+        # when the test program contains no test definition.
+        ":gtest_no_test_unittest",
+        ":gtest_xml_output_unittest_",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "gtest_xml_outfile1_test_",
+    testonly = 1,
+    srcs = ["gtest_xml_outfile1_test_.cc"],
+    deps = ["//:gtest_main"],
+)
+
+cc_binary(
+    name = "gtest_xml_outfile2_test_",
+    testonly = 1,
+    srcs = ["gtest_xml_outfile2_test_.cc"],
+    deps = ["//:gtest_main"],
+)
+
+py_test(
+    name = "gtest_xml_outfiles_test",
+    size = "small",
+    srcs = [
+        "gtest_xml_outfiles_test.py",
+        "gtest_xml_test_utils.py",
+    ],
+    data = [
+        ":gtest_xml_outfile1_test_",
+        ":gtest_xml_outfile2_test_",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "googletest-uninitialized-test_",
+    testonly = 1,
+    srcs = ["googletest-uninitialized-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-uninitialized-test",
+    size = "medium",
+    srcs = ["googletest-uninitialized-test.py"],
+    data = ["googletest-uninitialized-test_"],
+    deps = [":gtest_test_utils"],
+)
+
+cc_binary(
+    name = "gtest_testbridge_test_",
+    testonly = 1,
+    srcs = ["gtest_testbridge_test_.cc"],
+    deps = ["//:gtest_main"],
+)
+
+# Tests that filtering via testbridge works
+py_test(
+    name = "gtest_testbridge_test",
+    size = "small",
+    srcs = ["gtest_testbridge_test.py"],
+    data = [":gtest_testbridge_test_"],
+    deps = [":gtest_test_utils"],
+)
+
+py_test(
+    name = "googletest-json-outfiles-test",
+    size = "small",
+    srcs = [
+        "googletest-json-outfiles-test.py",
+        "gtest_json_test_utils.py",
+    ],
+    data = [
+        ":gtest_xml_outfile1_test_",
+        ":gtest_xml_outfile2_test_",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+py_test(
+    name = "googletest-json-output-unittest",
+    size = "medium",
+    srcs = [
+        "googletest-json-output-unittest.py",
+        "gtest_json_test_utils.py",
+    ],
+    args = select({
+        "//:has_absl": [],
+        "//conditions:default": ["--no_stacktrace_support"],
+    }),
+    data = [
+        # We invoke gtest_no_test_unittest to verify the JSON output
+        # when the test program contains no test definition.
+        ":gtest_no_test_unittest",
+        ":gtest_xml_output_unittest_",
+    ],
+    deps = [":gtest_test_utils"],
+)
+
+# Verifies interaction of death tests and exceptions.
+cc_test(
+    name = "googletest-death-test_ex_catch_test",
+    size = "medium",
+    srcs = ["googletest-death-test_ex_test.cc"],
+    copts = ["-fexceptions"],
+    defines = ["GTEST_ENABLE_CATCH_EXCEPTIONS_=1"],
+    deps = ["//:gtest"],
+)
+
+cc_binary(
+    name = "googletest-param-test-invalid-name1-test_",
+    testonly = 1,
+    srcs = ["googletest-param-test-invalid-name1-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+cc_binary(
+    name = "googletest-param-test-invalid-name2-test_",
+    testonly = 1,
+    srcs = ["googletest-param-test-invalid-name2-test_.cc"],
+    deps = ["//:gtest"],
+)
+
+py_test(
+    name = "googletest-param-test-invalid-name1-test",
+    size = "small",
+    srcs = ["googletest-param-test-invalid-name1-test.py"],
+    data = [":googletest-param-test-invalid-name1-test_"],
+    deps = [":gtest_test_utils"],
+)
+
+py_test(
+    name = "googletest-param-test-invalid-name2-test",
+    size = "small",
+    srcs = ["googletest-param-test-invalid-name2-test.py"],
+    data = [":googletest-param-test-invalid-name2-test_"],
+    deps = [":gtest_test_utils"],
+)
diff --git a/build/_deps/googletest-src/googletest/test/googletest-break-on-failure-unittest.py b/build/_deps/googletest-src/googletest/test/googletest-break-on-failure-unittest.py
new file mode 100755
index 0000000000000000000000000000000000000000..a5dfbc693b43a1b19e3847dcbcab886d2f4d28e6
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-break-on-failure-unittest.py
@@ -0,0 +1,208 @@
+#!/usr/bin/env python
+#
+# Copyright 2006, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Unit test for Google Test's break-on-failure mode.
+
+A user can ask Google Test to seg-fault when an assertion fails, using
+either the GTEST_BREAK_ON_FAILURE environment variable or the
+--gtest_break_on_failure flag.  This script tests such functionality
+by invoking googletest-break-on-failure-unittest_ (a program written with
+Google Test) with different environments and command line flags.
+"""
+
+import os
+import gtest_test_utils
+
+# Constants.
+
+IS_WINDOWS = os.name == 'nt'
+
+# The environment variable for enabling/disabling the break-on-failure mode.
+BREAK_ON_FAILURE_ENV_VAR = 'GTEST_BREAK_ON_FAILURE'
+
+# The command line flag for enabling/disabling the break-on-failure mode.
+BREAK_ON_FAILURE_FLAG = 'gtest_break_on_failure'
+
+# The environment variable for enabling/disabling the throw-on-failure mode.
+THROW_ON_FAILURE_ENV_VAR = 'GTEST_THROW_ON_FAILURE'
+
+# The environment variable for enabling/disabling the catch-exceptions mode.
+CATCH_EXCEPTIONS_ENV_VAR = 'GTEST_CATCH_EXCEPTIONS'
+
+# Path to the googletest-break-on-failure-unittest_ program.
+EXE_PATH = gtest_test_utils.GetTestExecutablePath(
+    'googletest-break-on-failure-unittest_')
+
+
+environ = gtest_test_utils.environ
+SetEnvVar = gtest_test_utils.SetEnvVar
+
+# Tests in this file run a Google-Test-based test program and expect it
+# to terminate prematurely.  Therefore they are incompatible with
+# the premature-exit-file protocol by design.  Unset the
+# premature-exit filepath to prevent Google Test from creating
+# the file.
+SetEnvVar(gtest_test_utils.PREMATURE_EXIT_FILE_ENV_VAR, None)
+
+
+def Run(command):
+  """Runs a command; returns 1 if it was killed by a signal, or 0 otherwise."""
+
+  p = gtest_test_utils.Subprocess(command, env=environ)
+  if p.terminated_by_signal:
+    return 1
+  else:
+    return 0
+
+
+# The tests.
+
+
+class GTestBreakOnFailureUnitTest(gtest_test_utils.TestCase):
+  """Tests using the GTEST_BREAK_ON_FAILURE environment variable or
+  the --gtest_break_on_failure flag to turn assertion failures into
+  segmentation faults.
+  """
+
+  def RunAndVerify(self, env_var_value, flag_value, expect_seg_fault):
+    """Runs googletest-break-on-failure-unittest_ and verifies that it does
+    (or does not) have a seg-fault.
+
+    Args:
+      env_var_value:    value of the GTEST_BREAK_ON_FAILURE environment
+                        variable; None if the variable should be unset.
+      flag_value:       value of the --gtest_break_on_failure flag;
+                        None if the flag should not be present.
+      expect_seg_fault: 1 if the program is expected to generate a seg-fault;
+                        0 otherwise.
+    """
+
+    SetEnvVar(BREAK_ON_FAILURE_ENV_VAR, env_var_value)
+
+    if env_var_value is None:
+      env_var_value_msg = ' is not set'
+    else:
+      env_var_value_msg = '=' + env_var_value
+
+    if flag_value is None:
+      flag = ''
+    elif flag_value == '0':
+      flag = '--%s=0' % BREAK_ON_FAILURE_FLAG
+    else:
+      flag = '--%s' % BREAK_ON_FAILURE_FLAG
+
+    command = [EXE_PATH]
+    if flag:
+      command.append(flag)
+
+    if expect_seg_fault:
+      should_or_not = 'should'
+    else:
+      should_or_not = 'should not'
+
+    has_seg_fault = Run(command)
+
+    SetEnvVar(BREAK_ON_FAILURE_ENV_VAR, None)
+
+    msg = ('when %s%s, an assertion failure in "%s" %s cause a seg-fault.' %
+           (BREAK_ON_FAILURE_ENV_VAR, env_var_value_msg, ' '.join(command),
+            should_or_not))
+    self.assert_(has_seg_fault == expect_seg_fault, msg)
+
+  def testDefaultBehavior(self):
+    """Tests the behavior of the default mode."""
+
+    self.RunAndVerify(env_var_value=None,
+                      flag_value=None,
+                      expect_seg_fault=0)
+
+  def testEnvVar(self):
+    """Tests using the GTEST_BREAK_ON_FAILURE environment variable."""
+
+    self.RunAndVerify(env_var_value='0',
+                      flag_value=None,
+                      expect_seg_fault=0)
+    self.RunAndVerify(env_var_value='1',
+                      flag_value=None,
+                      expect_seg_fault=1)
+
+  def testFlag(self):
+    """Tests using the --gtest_break_on_failure flag."""
+
+    self.RunAndVerify(env_var_value=None,
+                      flag_value='0',
+                      expect_seg_fault=0)
+    self.RunAndVerify(env_var_value=None,
+                      flag_value='1',
+                      expect_seg_fault=1)
+
+  def testFlagOverridesEnvVar(self):
+    """Tests that the flag overrides the environment variable."""
+
+    self.RunAndVerify(env_var_value='0',
+                      flag_value='0',
+                      expect_seg_fault=0)
+    self.RunAndVerify(env_var_value='0',
+                      flag_value='1',
+                      expect_seg_fault=1)
+    self.RunAndVerify(env_var_value='1',
+                      flag_value='0',
+                      expect_seg_fault=0)
+    self.RunAndVerify(env_var_value='1',
+                      flag_value='1',
+                      expect_seg_fault=1)
+
+  def testBreakOnFailureOverridesThrowOnFailure(self):
+    """Tests that gtest_break_on_failure overrides gtest_throw_on_failure."""
+
+    SetEnvVar(THROW_ON_FAILURE_ENV_VAR, '1')
+    try:
+      self.RunAndVerify(env_var_value=None,
+                        flag_value='1',
+                        expect_seg_fault=1)
+    finally:
+      SetEnvVar(THROW_ON_FAILURE_ENV_VAR, None)
+
+  if IS_WINDOWS:
+    def testCatchExceptionsDoesNotInterfere(self):
+      """Tests that gtest_catch_exceptions doesn't interfere."""
+
+      SetEnvVar(CATCH_EXCEPTIONS_ENV_VAR, '1')
+      try:
+        self.RunAndVerify(env_var_value='1',
+                          flag_value='1',
+                          expect_seg_fault=1)
+      finally:
+        SetEnvVar(CATCH_EXCEPTIONS_ENV_VAR, None)
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-break-on-failure-unittest_.cc b/build/_deps/googletest-src/googletest/test/googletest-break-on-failure-unittest_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f84957a2d03b56260c8e2c0ae8f5a27beb6f6378
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-break-on-failure-unittest_.cc
@@ -0,0 +1,86 @@
+// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Unit test for Google Test's break-on-failure mode.
+//
+// A user can ask Google Test to seg-fault when an assertion fails, using
+// either the GTEST_BREAK_ON_FAILURE environment variable or the
+// --gtest_break_on_failure flag.  This file is used for testing such
+// functionality.
+//
+// This program will be invoked from a Python unit test.  It is
+// expected to fail.  Don't run it directly.
+
+#include "gtest/gtest.h"
+
+#if GTEST_OS_WINDOWS
+# include <windows.h>
+# include <stdlib.h>
+#endif
+
+namespace {
+
+// A test that's expected to fail.
+TEST(Foo, Bar) {
+  EXPECT_EQ(2, 3);
+}
+
+#if GTEST_HAS_SEH && !GTEST_OS_WINDOWS_MOBILE
+// On Windows Mobile global exception handlers are not supported.
+LONG WINAPI ExitWithExceptionCode(
+    struct _EXCEPTION_POINTERS* exception_pointers) {
+  exit(exception_pointers->ExceptionRecord->ExceptionCode);
+}
+#endif
+
+}  // namespace
+
+int main(int argc, char **argv) {
+#if GTEST_OS_WINDOWS
+  // Suppresses display of the Windows error dialog upon encountering
+  // a general protection fault (segment violation).
+  SetErrorMode(SEM_NOGPFAULTERRORBOX | SEM_FAILCRITICALERRORS);
+
+# if GTEST_HAS_SEH && !GTEST_OS_WINDOWS_MOBILE
+
+  // The default unhandled exception filter does not always exit
+  // with the exception code as exit code - for example it exits with
+  // 0 for EXCEPTION_ACCESS_VIOLATION and 1 for EXCEPTION_BREAKPOINT
+  // if the application is compiled in debug mode. Thus we use our own
+  // filter which always exits with the exception code for unhandled
+  // exceptions.
+  SetUnhandledExceptionFilter(ExitWithExceptionCode);
+
+# endif
+#endif  // GTEST_OS_WINDOWS
+  testing::InitGoogleTest(&argc, argv);
+
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googletest/test/googletest-catch-exceptions-test.py b/build/_deps/googletest-src/googletest/test/googletest-catch-exceptions-test.py
new file mode 100755
index 0000000000000000000000000000000000000000..94a5b33f2305092593755c3ab86aa5f6c329e2a0
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-catch-exceptions-test.py
@@ -0,0 +1,236 @@
+#!/usr/bin/env python
+#
+# Copyright 2010 Google Inc.  All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Tests Google Test's exception catching behavior.
+
+This script invokes googletest-catch-exceptions-test_ and
+googletest-catch-exceptions-ex-test_ (programs written with
+Google Test) and verifies their output.
+"""
+
+import gtest_test_utils
+
+# Constants.
+FLAG_PREFIX = '--gtest_'
+LIST_TESTS_FLAG = FLAG_PREFIX + 'list_tests'
+NO_CATCH_EXCEPTIONS_FLAG = FLAG_PREFIX + 'catch_exceptions=0'
+FILTER_FLAG = FLAG_PREFIX + 'filter'
+
+# Path to the googletest-catch-exceptions-ex-test_ binary, compiled with
+# exceptions enabled.
+EX_EXE_PATH = gtest_test_utils.GetTestExecutablePath(
+    'googletest-catch-exceptions-ex-test_')
+
+# Path to the googletest-catch-exceptions-test_ binary, compiled with
+# exceptions disabled.
+EXE_PATH = gtest_test_utils.GetTestExecutablePath(
+    'googletest-catch-exceptions-no-ex-test_')
+
+environ = gtest_test_utils.environ
+SetEnvVar = gtest_test_utils.SetEnvVar
+
+# Tests in this file run a Google-Test-based test program and expect it
+# to terminate prematurely.  Therefore they are incompatible with
+# the premature-exit-file protocol by design.  Unset the
+# premature-exit filepath to prevent Google Test from creating
+# the file.
+SetEnvVar(gtest_test_utils.PREMATURE_EXIT_FILE_ENV_VAR, None)
+
+TEST_LIST = gtest_test_utils.Subprocess(
+    [EXE_PATH, LIST_TESTS_FLAG], env=environ).output
+
+SUPPORTS_SEH_EXCEPTIONS = 'ThrowsSehException' in TEST_LIST
+
+if SUPPORTS_SEH_EXCEPTIONS:
+  BINARY_OUTPUT = gtest_test_utils.Subprocess([EXE_PATH], env=environ).output
+
+EX_BINARY_OUTPUT = gtest_test_utils.Subprocess(
+    [EX_EXE_PATH], env=environ).output
+
+
+# The tests.
+if SUPPORTS_SEH_EXCEPTIONS:
+  # pylint:disable-msg=C6302
+  class CatchSehExceptionsTest(gtest_test_utils.TestCase):
+    """Tests exception-catching behavior."""
+
+
+    def TestSehExceptions(self, test_output):
+      self.assert_('SEH exception with code 0x2a thrown '
+                   'in the test fixture\'s constructor'
+                   in test_output)
+      self.assert_('SEH exception with code 0x2a thrown '
+                   'in the test fixture\'s destructor'
+                   in test_output)
+      self.assert_('SEH exception with code 0x2a thrown in SetUpTestSuite()'
+                   in test_output)
+      self.assert_('SEH exception with code 0x2a thrown in TearDownTestSuite()'
+                   in test_output)
+      self.assert_('SEH exception with code 0x2a thrown in SetUp()'
+                   in test_output)
+      self.assert_('SEH exception with code 0x2a thrown in TearDown()'
+                   in test_output)
+      self.assert_('SEH exception with code 0x2a thrown in the test body'
+                   in test_output)
+
+    def testCatchesSehExceptionsWithCxxExceptionsEnabled(self):
+      self.TestSehExceptions(EX_BINARY_OUTPUT)
+
+    def testCatchesSehExceptionsWithCxxExceptionsDisabled(self):
+      self.TestSehExceptions(BINARY_OUTPUT)
+
+
+class CatchCxxExceptionsTest(gtest_test_utils.TestCase):
+  """Tests C++ exception-catching behavior.
+
+     Tests in this test case verify that:
+     * C++ exceptions are caught and logged as C++ (not SEH) exceptions
+     * Exception thrown affect the remainder of the test work flow in the
+       expected manner.
+  """
+
+  def testCatchesCxxExceptionsInFixtureConstructor(self):
+    self.assertTrue(
+        'C++ exception with description '
+        '"Standard C++ exception" thrown '
+        'in the test fixture\'s constructor' in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT)
+    self.assert_('unexpected' not in EX_BINARY_OUTPUT,
+                 'This failure belongs in this test only if '
+                 '"CxxExceptionInConstructorTest" (no quotes) '
+                 'appears on the same line as words "called unexpectedly"')
+
+  if ('CxxExceptionInDestructorTest.ThrowsExceptionInDestructor' in
+      EX_BINARY_OUTPUT):
+
+    def testCatchesCxxExceptionsInFixtureDestructor(self):
+      self.assertTrue(
+          'C++ exception with description '
+          '"Standard C++ exception" thrown '
+          'in the test fixture\'s destructor' in EX_BINARY_OUTPUT,
+          EX_BINARY_OUTPUT)
+      self.assertTrue(
+          'CxxExceptionInDestructorTest::TearDownTestSuite() '
+          'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+
+  def testCatchesCxxExceptionsInSetUpTestCase(self):
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in SetUpTestSuite()' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInConstructorTest::TearDownTestSuite() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTestSuiteTest constructor '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTestSuiteTest destructor '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTestSuiteTest::SetUp() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTestSuiteTest::TearDown() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTestSuiteTest test body '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+
+  def testCatchesCxxExceptionsInTearDownTestCase(self):
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in TearDownTestSuite()' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+
+  def testCatchesCxxExceptionsInSetUp(self):
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in SetUp()' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTest::TearDownTestSuite() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTest destructor '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInSetUpTest::TearDown() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assert_('unexpected' not in EX_BINARY_OUTPUT,
+                 'This failure belongs in this test only if '
+                 '"CxxExceptionInSetUpTest" (no quotes) '
+                 'appears on the same line as words "called unexpectedly"')
+
+  def testCatchesCxxExceptionsInTearDown(self):
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in TearDown()' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInTearDownTest::TearDownTestSuite() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInTearDownTest destructor '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+
+  def testCatchesCxxExceptionsInTestBody(self):
+    self.assertTrue(
+        'C++ exception with description "Standard C++ exception"'
+        ' thrown in the test body' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInTestBodyTest::TearDownTestSuite() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInTestBodyTest destructor '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+    self.assertTrue(
+        'CxxExceptionInTestBodyTest::TearDown() '
+        'called as expected.' in EX_BINARY_OUTPUT, EX_BINARY_OUTPUT)
+
+  def testCatchesNonStdCxxExceptions(self):
+    self.assertTrue(
+        'Unknown C++ exception thrown in the test body' in EX_BINARY_OUTPUT,
+        EX_BINARY_OUTPUT)
+
+  def testUnhandledCxxExceptionsAbortTheProgram(self):
+    # Filters out SEH exception tests on Windows. Unhandled SEH exceptions
+    # cause tests to show pop-up windows there.
+    FITLER_OUT_SEH_TESTS_FLAG = FILTER_FLAG + '=-*Seh*'
+    # By default, Google Test doesn't catch the exceptions.
+    uncaught_exceptions_ex_binary_output = gtest_test_utils.Subprocess(
+        [EX_EXE_PATH,
+         NO_CATCH_EXCEPTIONS_FLAG,
+         FITLER_OUT_SEH_TESTS_FLAG],
+        env=environ).output
+
+    self.assert_('Unhandled C++ exception terminating the program'
+                 in uncaught_exceptions_ex_binary_output)
+    self.assert_('unexpected' not in uncaught_exceptions_ex_binary_output)
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-catch-exceptions-test_.cc b/build/_deps/googletest-src/googletest/test/googletest-catch-exceptions-test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8c127d40b11d4d72a3faae80bafbb746d1aa4128
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-catch-exceptions-test_.cc
@@ -0,0 +1,293 @@
+// Copyright 2010, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Tests for Google Test itself. Tests in this file throw C++ or SEH
+// exceptions, and the output is verified by
+// googletest-catch-exceptions-test.py.
+
+#include <stdio.h>  // NOLINT
+#include <stdlib.h>  // For exit().
+
+#include "gtest/gtest.h"
+
+#if GTEST_HAS_SEH
+# include <windows.h>
+#endif
+
+#if GTEST_HAS_EXCEPTIONS
+# include <exception>  // For set_terminate().
+# include <stdexcept>
+#endif
+
+using testing::Test;
+
+#if GTEST_HAS_SEH
+
+class SehExceptionInConstructorTest : public Test {
+ public:
+  SehExceptionInConstructorTest() { RaiseException(42, 0, 0, NULL); }
+};
+
+TEST_F(SehExceptionInConstructorTest, ThrowsExceptionInConstructor) {}
+
+class SehExceptionInDestructorTest : public Test {
+ public:
+  ~SehExceptionInDestructorTest() { RaiseException(42, 0, 0, NULL); }
+};
+
+TEST_F(SehExceptionInDestructorTest, ThrowsExceptionInDestructor) {}
+
+class SehExceptionInSetUpTestSuiteTest : public Test {
+ public:
+  static void SetUpTestSuite() { RaiseException(42, 0, 0, NULL); }
+};
+
+TEST_F(SehExceptionInSetUpTestSuiteTest, ThrowsExceptionInSetUpTestSuite) {}
+
+class SehExceptionInTearDownTestSuiteTest : public Test {
+ public:
+  static void TearDownTestSuite() { RaiseException(42, 0, 0, NULL); }
+};
+
+TEST_F(SehExceptionInTearDownTestSuiteTest,
+       ThrowsExceptionInTearDownTestSuite) {}
+
+class SehExceptionInSetUpTest : public Test {
+ protected:
+  virtual void SetUp() { RaiseException(42, 0, 0, NULL); }
+};
+
+TEST_F(SehExceptionInSetUpTest, ThrowsExceptionInSetUp) {}
+
+class SehExceptionInTearDownTest : public Test {
+ protected:
+  virtual void TearDown() { RaiseException(42, 0, 0, NULL); }
+};
+
+TEST_F(SehExceptionInTearDownTest, ThrowsExceptionInTearDown) {}
+
+TEST(SehExceptionTest, ThrowsSehException) {
+  RaiseException(42, 0, 0, NULL);
+}
+
+#endif  // GTEST_HAS_SEH
+
+#if GTEST_HAS_EXCEPTIONS
+
+class CxxExceptionInConstructorTest : public Test {
+ public:
+  CxxExceptionInConstructorTest() {
+    // Without this macro VC++ complains about unreachable code at the end of
+    // the constructor.
+    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(
+        throw std::runtime_error("Standard C++ exception"));
+  }
+
+  static void TearDownTestSuite() {
+    printf("%s",
+           "CxxExceptionInConstructorTest::TearDownTestSuite() "
+           "called as expected.\n");
+  }
+
+ protected:
+  ~CxxExceptionInConstructorTest() override {
+    ADD_FAILURE() << "CxxExceptionInConstructorTest destructor "
+                  << "called unexpectedly.";
+  }
+
+  void SetUp() override {
+    ADD_FAILURE() << "CxxExceptionInConstructorTest::SetUp() "
+                  << "called unexpectedly.";
+  }
+
+  void TearDown() override {
+    ADD_FAILURE() << "CxxExceptionInConstructorTest::TearDown() "
+                  << "called unexpectedly.";
+  }
+};
+
+TEST_F(CxxExceptionInConstructorTest, ThrowsExceptionInConstructor) {
+  ADD_FAILURE() << "CxxExceptionInConstructorTest test body "
+                << "called unexpectedly.";
+}
+
+class CxxExceptionInSetUpTestSuiteTest : public Test {
+ public:
+  CxxExceptionInSetUpTestSuiteTest() {
+    printf("%s",
+           "CxxExceptionInSetUpTestSuiteTest constructor "
+           "called as expected.\n");
+  }
+
+  static void SetUpTestSuite() {
+    throw std::runtime_error("Standard C++ exception");
+  }
+
+  static void TearDownTestSuite() {
+    printf("%s",
+           "CxxExceptionInSetUpTestSuiteTest::TearDownTestSuite() "
+           "called as expected.\n");
+  }
+
+ protected:
+  ~CxxExceptionInSetUpTestSuiteTest() override {
+    printf("%s",
+           "CxxExceptionInSetUpTestSuiteTest destructor "
+           "called as expected.\n");
+  }
+
+  void SetUp() override {
+    printf("%s",
+           "CxxExceptionInSetUpTestSuiteTest::SetUp() "
+           "called as expected.\n");
+  }
+
+  void TearDown() override {
+    printf("%s",
+           "CxxExceptionInSetUpTestSuiteTest::TearDown() "
+           "called as expected.\n");
+  }
+};
+
+TEST_F(CxxExceptionInSetUpTestSuiteTest, ThrowsExceptionInSetUpTestSuite) {
+  printf("%s",
+         "CxxExceptionInSetUpTestSuiteTest test body "
+         "called as expected.\n");
+}
+
+class CxxExceptionInTearDownTestSuiteTest : public Test {
+ public:
+  static void TearDownTestSuite() {
+    throw std::runtime_error("Standard C++ exception");
+  }
+};
+
+TEST_F(CxxExceptionInTearDownTestSuiteTest,
+       ThrowsExceptionInTearDownTestSuite) {}
+
+class CxxExceptionInSetUpTest : public Test {
+ public:
+  static void TearDownTestSuite() {
+    printf("%s",
+           "CxxExceptionInSetUpTest::TearDownTestSuite() "
+           "called as expected.\n");
+  }
+
+ protected:
+  ~CxxExceptionInSetUpTest() override {
+    printf("%s",
+           "CxxExceptionInSetUpTest destructor "
+           "called as expected.\n");
+  }
+
+  void SetUp() override { throw std::runtime_error("Standard C++ exception"); }
+
+  void TearDown() override {
+    printf("%s",
+           "CxxExceptionInSetUpTest::TearDown() "
+           "called as expected.\n");
+  }
+};
+
+TEST_F(CxxExceptionInSetUpTest, ThrowsExceptionInSetUp) {
+  ADD_FAILURE() << "CxxExceptionInSetUpTest test body "
+                << "called unexpectedly.";
+}
+
+class CxxExceptionInTearDownTest : public Test {
+ public:
+  static void TearDownTestSuite() {
+    printf("%s",
+           "CxxExceptionInTearDownTest::TearDownTestSuite() "
+           "called as expected.\n");
+  }
+
+ protected:
+  ~CxxExceptionInTearDownTest() override {
+    printf("%s",
+           "CxxExceptionInTearDownTest destructor "
+           "called as expected.\n");
+  }
+
+  void TearDown() override {
+    throw std::runtime_error("Standard C++ exception");
+  }
+};
+
+TEST_F(CxxExceptionInTearDownTest, ThrowsExceptionInTearDown) {}
+
+class CxxExceptionInTestBodyTest : public Test {
+ public:
+  static void TearDownTestSuite() {
+    printf("%s",
+           "CxxExceptionInTestBodyTest::TearDownTestSuite() "
+           "called as expected.\n");
+  }
+
+ protected:
+  ~CxxExceptionInTestBodyTest() override {
+    printf("%s",
+           "CxxExceptionInTestBodyTest destructor "
+           "called as expected.\n");
+  }
+
+  void TearDown() override {
+    printf("%s",
+           "CxxExceptionInTestBodyTest::TearDown() "
+           "called as expected.\n");
+  }
+};
+
+TEST_F(CxxExceptionInTestBodyTest, ThrowsStdCxxException) {
+  throw std::runtime_error("Standard C++ exception");
+}
+
+TEST(CxxExceptionTest, ThrowsNonStdCxxException) {
+  throw "C-string";
+}
+
+// This terminate handler aborts the program using exit() rather than abort().
+// This avoids showing pop-ups on Windows systems and core dumps on Unix-like
+// ones.
+void TerminateHandler() {
+  fprintf(stderr, "%s\n", "Unhandled C++ exception terminating the program.");
+  fflush(nullptr);
+  exit(3);
+}
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
+int main(int argc, char** argv) {
+#if GTEST_HAS_EXCEPTIONS
+  std::set_terminate(&TerminateHandler);
+#endif
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googletest/test/googletest-color-test.py b/build/_deps/googletest-src/googletest/test/googletest-color-test.py
new file mode 100755
index 0000000000000000000000000000000000000000..f3b7c9990bcf44a65036c253e7a01845af9c3717
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-color-test.py
@@ -0,0 +1,127 @@
+#!/usr/bin/env python
+#
+# Copyright 2008, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Verifies that Google Test correctly determines whether to use colors."""
+
+import os
+import gtest_test_utils
+
+IS_WINDOWS = os.name == 'nt'
+
+COLOR_ENV_VAR = 'GTEST_COLOR'
+COLOR_FLAG = 'gtest_color'
+COMMAND = gtest_test_utils.GetTestExecutablePath('googletest-color-test_')
+
+
+def SetEnvVar(env_var, value):
+  """Sets the env variable to 'value'; unsets it when 'value' is None."""
+
+  if value is not None:
+    os.environ[env_var] = value
+  elif env_var in os.environ:
+    del os.environ[env_var]
+
+
+def UsesColor(term, color_env_var, color_flag):
+  """Runs googletest-color-test_ and returns its exit code."""
+
+  SetEnvVar('TERM', term)
+  SetEnvVar(COLOR_ENV_VAR, color_env_var)
+
+  if color_flag is None:
+    args = []
+  else:
+    args = ['--%s=%s' % (COLOR_FLAG, color_flag)]
+  p = gtest_test_utils.Subprocess([COMMAND] + args)
+  return not p.exited or p.exit_code
+
+
+class GTestColorTest(gtest_test_utils.TestCase):
+  def testNoEnvVarNoFlag(self):
+    """Tests the case when there's neither GTEST_COLOR nor --gtest_color."""
+
+    if not IS_WINDOWS:
+      self.assert_(not UsesColor('dumb', None, None))
+      self.assert_(not UsesColor('emacs', None, None))
+      self.assert_(not UsesColor('xterm-mono', None, None))
+      self.assert_(not UsesColor('unknown', None, None))
+      self.assert_(not UsesColor(None, None, None))
+    self.assert_(UsesColor('linux', None, None))
+    self.assert_(UsesColor('cygwin', None, None))
+    self.assert_(UsesColor('xterm', None, None))
+    self.assert_(UsesColor('xterm-color', None, None))
+    self.assert_(UsesColor('xterm-256color', None, None))
+
+  def testFlagOnly(self):
+    """Tests the case when there's --gtest_color but not GTEST_COLOR."""
+
+    self.assert_(not UsesColor('dumb', None, 'no'))
+    self.assert_(not UsesColor('xterm-color', None, 'no'))
+    if not IS_WINDOWS:
+      self.assert_(not UsesColor('emacs', None, 'auto'))
+    self.assert_(UsesColor('xterm', None, 'auto'))
+    self.assert_(UsesColor('dumb', None, 'yes'))
+    self.assert_(UsesColor('xterm', None, 'yes'))
+
+  def testEnvVarOnly(self):
+    """Tests the case when there's GTEST_COLOR but not --gtest_color."""
+
+    self.assert_(not UsesColor('dumb', 'no', None))
+    self.assert_(not UsesColor('xterm-color', 'no', None))
+    if not IS_WINDOWS:
+      self.assert_(not UsesColor('dumb', 'auto', None))
+    self.assert_(UsesColor('xterm-color', 'auto', None))
+    self.assert_(UsesColor('dumb', 'yes', None))
+    self.assert_(UsesColor('xterm-color', 'yes', None))
+
+  def testEnvVarAndFlag(self):
+    """Tests the case when there are both GTEST_COLOR and --gtest_color."""
+
+    self.assert_(not UsesColor('xterm-color', 'no', 'no'))
+    self.assert_(UsesColor('dumb', 'no', 'yes'))
+    self.assert_(UsesColor('xterm-color', 'no', 'auto'))
+
+  def testAliasesOfYesAndNo(self):
+    """Tests using aliases in specifying --gtest_color."""
+
+    self.assert_(UsesColor('dumb', None, 'true'))
+    self.assert_(UsesColor('dumb', None, 'YES'))
+    self.assert_(UsesColor('dumb', None, 'T'))
+    self.assert_(UsesColor('dumb', None, '1'))
+
+    self.assert_(not UsesColor('xterm', None, 'f'))
+    self.assert_(not UsesColor('xterm', None, 'false'))
+    self.assert_(not UsesColor('xterm', None, '0'))
+    self.assert_(not UsesColor('xterm', None, 'unknown'))
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-color-test_.cc b/build/_deps/googletest-src/googletest/test/googletest-color-test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..220a3a00548fdb1e935a3da16df563a50e179a8a
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-color-test_.cc
@@ -0,0 +1,62 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// A helper program for testing how Google Test determines whether to use
+// colors in the output.  It prints "YES" and returns 1 if Google Test
+// decides to use colors, and prints "NO" and returns 0 otherwise.
+
+#include <stdio.h>
+
+#include "gtest/gtest.h"
+#include "src/gtest-internal-inl.h"
+
+using testing::internal::ShouldUseColor;
+
+// The purpose of this is to ensure that the UnitTest singleton is
+// created before main() is entered, and thus that ShouldUseColor()
+// works the same way as in a real Google-Test-based test.  We don't actual
+// run the TEST itself.
+TEST(GTestColorTest, Dummy) {
+}
+
+int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+
+  if (ShouldUseColor(true)) {
+    // Google Test decides to use colors in the output (assuming it
+    // goes to a TTY).
+    printf("YES\n");
+    return 1;
+  } else {
+    // Google Test decides not to use colors in the output.
+    printf("NO\n");
+    return 0;
+  }
+}
diff --git a/build/_deps/googletest-src/googletest/test/googletest-death-test-test.cc b/build/_deps/googletest-src/googletest/test/googletest-death-test-test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..cba906ccd861df493ae848c814010a2249f9767e
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-death-test-test.cc
@@ -0,0 +1,1516 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Tests for death tests.
+
+#include "gtest/gtest-death-test.h"
+
+#include "gtest/gtest.h"
+#include "gtest/internal/gtest-filepath.h"
+
+using testing::internal::AlwaysFalse;
+using testing::internal::AlwaysTrue;
+
+#if GTEST_HAS_DEATH_TEST
+
+# if GTEST_OS_WINDOWS
+#  include <fcntl.h>           // For O_BINARY
+#  include <direct.h>          // For chdir().
+#  include <io.h>
+# else
+#  include <unistd.h>
+#  include <sys/wait.h>        // For waitpid.
+# endif  // GTEST_OS_WINDOWS
+
+# include <limits.h>
+# include <signal.h>
+# include <stdio.h>
+
+# if GTEST_OS_LINUX
+#  include <sys/time.h>
+# endif  // GTEST_OS_LINUX
+
+# include "gtest/gtest-spi.h"
+# include "src/gtest-internal-inl.h"
+
+namespace posix = ::testing::internal::posix;
+
+using testing::ContainsRegex;
+using testing::Matcher;
+using testing::Message;
+using testing::internal::DeathTest;
+using testing::internal::DeathTestFactory;
+using testing::internal::FilePath;
+using testing::internal::GetLastErrnoDescription;
+using testing::internal::GetUnitTestImpl;
+using testing::internal::InDeathTestChild;
+using testing::internal::ParseNaturalNumber;
+
+namespace testing {
+namespace internal {
+
+// A helper class whose objects replace the death test factory for a
+// single UnitTest object during their lifetimes.
+class ReplaceDeathTestFactory {
+ public:
+  explicit ReplaceDeathTestFactory(DeathTestFactory* new_factory)
+      : unit_test_impl_(GetUnitTestImpl()) {
+    old_factory_ = unit_test_impl_->death_test_factory_.release();
+    unit_test_impl_->death_test_factory_.reset(new_factory);
+  }
+
+  ~ReplaceDeathTestFactory() {
+    unit_test_impl_->death_test_factory_.release();
+    unit_test_impl_->death_test_factory_.reset(old_factory_);
+  }
+ private:
+  // Prevents copying ReplaceDeathTestFactory objects.
+  ReplaceDeathTestFactory(const ReplaceDeathTestFactory&);
+  void operator=(const ReplaceDeathTestFactory&);
+
+  UnitTestImpl* unit_test_impl_;
+  DeathTestFactory* old_factory_;
+};
+
+}  // namespace internal
+}  // namespace testing
+
+namespace {
+
+void DieWithMessage(const ::std::string& message) {
+  fprintf(stderr, "%s", message.c_str());
+  fflush(stderr);  // Make sure the text is printed before the process exits.
+
+  // We call _exit() instead of exit(), as the former is a direct
+  // system call and thus safer in the presence of threads.  exit()
+  // will invoke user-defined exit-hooks, which may do dangerous
+  // things that conflict with death tests.
+  //
+  // Some compilers can recognize that _exit() never returns and issue the
+  // 'unreachable code' warning for code following this function, unless
+  // fooled by a fake condition.
+  if (AlwaysTrue())
+    _exit(1);
+}
+
+void DieInside(const ::std::string& function) {
+  DieWithMessage("death inside " + function + "().");
+}
+
+// Tests that death tests work.
+
+class TestForDeathTest : public testing::Test {
+ protected:
+  TestForDeathTest() : original_dir_(FilePath::GetCurrentDir()) {}
+
+  ~TestForDeathTest() override { posix::ChDir(original_dir_.c_str()); }
+
+  // A static member function that's expected to die.
+  static void StaticMemberFunction() { DieInside("StaticMemberFunction"); }
+
+  // A method of the test fixture that may die.
+  void MemberFunction() {
+    if (should_die_)
+      DieInside("MemberFunction");
+  }
+
+  // True if and only if MemberFunction() should die.
+  bool should_die_;
+  const FilePath original_dir_;
+};
+
+// A class with a member function that may die.
+class MayDie {
+ public:
+  explicit MayDie(bool should_die) : should_die_(should_die) {}
+
+  // A member function that may die.
+  void MemberFunction() const {
+    if (should_die_)
+      DieInside("MayDie::MemberFunction");
+  }
+
+ private:
+  // True if and only if MemberFunction() should die.
+  bool should_die_;
+};
+
+// A global function that's expected to die.
+void GlobalFunction() { DieInside("GlobalFunction"); }
+
+// A non-void function that's expected to die.
+int NonVoidFunction() {
+  DieInside("NonVoidFunction");
+  return 1;
+}
+
+// A unary function that may die.
+void DieIf(bool should_die) {
+  if (should_die)
+    DieInside("DieIf");
+}
+
+// A binary function that may die.
+bool DieIfLessThan(int x, int y) {
+  if (x < y) {
+    DieInside("DieIfLessThan");
+  }
+  return true;
+}
+
+// Tests that ASSERT_DEATH can be used outside a TEST, TEST_F, or test fixture.
+void DeathTestSubroutine() {
+  EXPECT_DEATH(GlobalFunction(), "death.*GlobalFunction");
+  ASSERT_DEATH(GlobalFunction(), "death.*GlobalFunction");
+}
+
+// Death in dbg, not opt.
+int DieInDebugElse12(int* sideeffect) {
+  if (sideeffect) *sideeffect = 12;
+
+# ifndef NDEBUG
+
+  DieInside("DieInDebugElse12");
+
+# endif  // NDEBUG
+
+  return 12;
+}
+
+# if GTEST_OS_WINDOWS
+
+// Death in dbg due to Windows CRT assertion failure, not opt.
+int DieInCRTDebugElse12(int* sideeffect) {
+  if (sideeffect) *sideeffect = 12;
+
+  // Create an invalid fd by closing a valid one
+  int fdpipe[2];
+  EXPECT_EQ(_pipe(fdpipe, 256, O_BINARY), 0);
+  EXPECT_EQ(_close(fdpipe[0]), 0);
+  EXPECT_EQ(_close(fdpipe[1]), 0);
+
+  // _dup() should crash in debug mode
+  EXPECT_EQ(_dup(fdpipe[0]), -1);
+
+  return 12;
+}
+
+#endif  // GTEST_OS_WINDOWS
+
+# if GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
+
+// Tests the ExitedWithCode predicate.
+TEST(ExitStatusPredicateTest, ExitedWithCode) {
+  // On Windows, the process's exit code is the same as its exit status,
+  // so the predicate just compares the its input with its parameter.
+  EXPECT_TRUE(testing::ExitedWithCode(0)(0));
+  EXPECT_TRUE(testing::ExitedWithCode(1)(1));
+  EXPECT_TRUE(testing::ExitedWithCode(42)(42));
+  EXPECT_FALSE(testing::ExitedWithCode(0)(1));
+  EXPECT_FALSE(testing::ExitedWithCode(1)(0));
+}
+
+# else
+
+// Returns the exit status of a process that calls _exit(2) with a
+// given exit code.  This is a helper function for the
+// ExitStatusPredicateTest test suite.
+static int NormalExitStatus(int exit_code) {
+  pid_t child_pid = fork();
+  if (child_pid == 0) {
+    _exit(exit_code);
+  }
+  int status;
+  waitpid(child_pid, &status, 0);
+  return status;
+}
+
+// Returns the exit status of a process that raises a given signal.
+// If the signal does not cause the process to die, then it returns
+// instead the exit status of a process that exits normally with exit
+// code 1.  This is a helper function for the ExitStatusPredicateTest
+// test suite.
+static int KilledExitStatus(int signum) {
+  pid_t child_pid = fork();
+  if (child_pid == 0) {
+    raise(signum);
+    _exit(1);
+  }
+  int status;
+  waitpid(child_pid, &status, 0);
+  return status;
+}
+
+// Tests the ExitedWithCode predicate.
+TEST(ExitStatusPredicateTest, ExitedWithCode) {
+  const int status0  = NormalExitStatus(0);
+  const int status1  = NormalExitStatus(1);
+  const int status42 = NormalExitStatus(42);
+  const testing::ExitedWithCode pred0(0);
+  const testing::ExitedWithCode pred1(1);
+  const testing::ExitedWithCode pred42(42);
+  EXPECT_PRED1(pred0,  status0);
+  EXPECT_PRED1(pred1,  status1);
+  EXPECT_PRED1(pred42, status42);
+  EXPECT_FALSE(pred0(status1));
+  EXPECT_FALSE(pred42(status0));
+  EXPECT_FALSE(pred1(status42));
+}
+
+// Tests the KilledBySignal predicate.
+TEST(ExitStatusPredicateTest, KilledBySignal) {
+  const int status_segv = KilledExitStatus(SIGSEGV);
+  const int status_kill = KilledExitStatus(SIGKILL);
+  const testing::KilledBySignal pred_segv(SIGSEGV);
+  const testing::KilledBySignal pred_kill(SIGKILL);
+  EXPECT_PRED1(pred_segv, status_segv);
+  EXPECT_PRED1(pred_kill, status_kill);
+  EXPECT_FALSE(pred_segv(status_kill));
+  EXPECT_FALSE(pred_kill(status_segv));
+}
+
+# endif  // GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA
+
+// Tests that the death test macros expand to code which may or may not
+// be followed by operator<<, and that in either case the complete text
+// comprises only a single C++ statement.
+TEST_F(TestForDeathTest, SingleStatement) {
+  if (AlwaysFalse())
+    // This would fail if executed; this is a compilation test only
+    ASSERT_DEATH(return, "");
+
+  if (AlwaysTrue())
+    EXPECT_DEATH(_exit(1), "");
+  else
+    // This empty "else" branch is meant to ensure that EXPECT_DEATH
+    // doesn't expand into an "if" statement without an "else"
+    ;
+
+  if (AlwaysFalse())
+    ASSERT_DEATH(return, "") << "did not die";
+
+  if (AlwaysFalse())
+    ;
+  else
+    EXPECT_DEATH(_exit(1), "") << 1 << 2 << 3;
+}
+
+# if GTEST_USES_PCRE
+
+void DieWithEmbeddedNul() {
+  fprintf(stderr, "Hello%cmy null world.\n", '\0');
+  fflush(stderr);
+  _exit(1);
+}
+
+// Tests that EXPECT_DEATH and ASSERT_DEATH work when the error
+// message has a NUL character in it.
+TEST_F(TestForDeathTest, EmbeddedNulInMessage) {
+  EXPECT_DEATH(DieWithEmbeddedNul(), "my null world");
+  ASSERT_DEATH(DieWithEmbeddedNul(), "my null world");
+}
+
+# endif  // GTEST_USES_PCRE
+
+// Tests that death test macros expand to code which interacts well with switch
+// statements.
+TEST_F(TestForDeathTest, SwitchStatement) {
+  // Microsoft compiler usually complains about switch statements without
+  // case labels. We suppress that warning for this test.
+  GTEST_DISABLE_MSC_WARNINGS_PUSH_(4065)
+
+  switch (0)
+    default:
+      ASSERT_DEATH(_exit(1), "") << "exit in default switch handler";
+
+  switch (0)
+    case 0:
+      EXPECT_DEATH(_exit(1), "") << "exit in switch case";
+
+  GTEST_DISABLE_MSC_WARNINGS_POP_()
+}
+
+// Tests that a static member function can be used in a "fast" style
+// death test.
+TEST_F(TestForDeathTest, StaticMemberFunctionFastStyle) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  ASSERT_DEATH(StaticMemberFunction(), "death.*StaticMember");
+}
+
+// Tests that a method of the test fixture can be used in a "fast"
+// style death test.
+TEST_F(TestForDeathTest, MemberFunctionFastStyle) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  should_die_ = true;
+  EXPECT_DEATH(MemberFunction(), "inside.*MemberFunction");
+}
+
+void ChangeToRootDir() { posix::ChDir(GTEST_PATH_SEP_); }
+
+// Tests that death tests work even if the current directory has been
+// changed.
+TEST_F(TestForDeathTest, FastDeathTestInChangedDir) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+
+  ChangeToRootDir();
+  EXPECT_EXIT(_exit(1), testing::ExitedWithCode(1), "");
+
+  ChangeToRootDir();
+  ASSERT_DEATH(_exit(1), "");
+}
+
+# if GTEST_OS_LINUX
+void SigprofAction(int, siginfo_t*, void*) { /* no op */ }
+
+// Sets SIGPROF action and ITIMER_PROF timer (interval: 1ms).
+void SetSigprofActionAndTimer() {
+  struct itimerval timer;
+  timer.it_interval.tv_sec = 0;
+  timer.it_interval.tv_usec = 1;
+  timer.it_value = timer.it_interval;
+  ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, nullptr));
+  struct sigaction signal_action;
+  memset(&signal_action, 0, sizeof(signal_action));
+  sigemptyset(&signal_action.sa_mask);
+  signal_action.sa_sigaction = SigprofAction;
+  signal_action.sa_flags = SA_RESTART | SA_SIGINFO;
+  ASSERT_EQ(0, sigaction(SIGPROF, &signal_action, nullptr));
+}
+
+// Disables ITIMER_PROF timer and ignores SIGPROF signal.
+void DisableSigprofActionAndTimer(struct sigaction* old_signal_action) {
+  struct itimerval timer;
+  timer.it_interval.tv_sec = 0;
+  timer.it_interval.tv_usec = 0;
+  timer.it_value = timer.it_interval;
+  ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, nullptr));
+  struct sigaction signal_action;
+  memset(&signal_action, 0, sizeof(signal_action));
+  sigemptyset(&signal_action.sa_mask);
+  signal_action.sa_handler = SIG_IGN;
+  ASSERT_EQ(0, sigaction(SIGPROF, &signal_action, old_signal_action));
+}
+
+// Tests that death tests work when SIGPROF handler and timer are set.
+TEST_F(TestForDeathTest, FastSigprofActionSet) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  SetSigprofActionAndTimer();
+  EXPECT_DEATH(_exit(1), "");
+  struct sigaction old_signal_action;
+  DisableSigprofActionAndTimer(&old_signal_action);
+  EXPECT_TRUE(old_signal_action.sa_sigaction == SigprofAction);
+}
+
+TEST_F(TestForDeathTest, ThreadSafeSigprofActionSet) {
+  testing::GTEST_FLAG(death_test_style) = "threadsafe";
+  SetSigprofActionAndTimer();
+  EXPECT_DEATH(_exit(1), "");
+  struct sigaction old_signal_action;
+  DisableSigprofActionAndTimer(&old_signal_action);
+  EXPECT_TRUE(old_signal_action.sa_sigaction == SigprofAction);
+}
+# endif  // GTEST_OS_LINUX
+
+// Repeats a representative sample of death tests in the "threadsafe" style:
+
+TEST_F(TestForDeathTest, StaticMemberFunctionThreadsafeStyle) {
+  testing::GTEST_FLAG(death_test_style) = "threadsafe";
+  ASSERT_DEATH(StaticMemberFunction(), "death.*StaticMember");
+}
+
+TEST_F(TestForDeathTest, MemberFunctionThreadsafeStyle) {
+  testing::GTEST_FLAG(death_test_style) = "threadsafe";
+  should_die_ = true;
+  EXPECT_DEATH(MemberFunction(), "inside.*MemberFunction");
+}
+
+TEST_F(TestForDeathTest, ThreadsafeDeathTestInLoop) {
+  testing::GTEST_FLAG(death_test_style) = "threadsafe";
+
+  for (int i = 0; i < 3; ++i)
+    EXPECT_EXIT(_exit(i), testing::ExitedWithCode(i), "") << ": i = " << i;
+}
+
+TEST_F(TestForDeathTest, ThreadsafeDeathTestInChangedDir) {
+  testing::GTEST_FLAG(death_test_style) = "threadsafe";
+
+  ChangeToRootDir();
+  EXPECT_EXIT(_exit(1), testing::ExitedWithCode(1), "");
+
+  ChangeToRootDir();
+  ASSERT_DEATH(_exit(1), "");
+}
+
+TEST_F(TestForDeathTest, MixedStyles) {
+  testing::GTEST_FLAG(death_test_style) = "threadsafe";
+  EXPECT_DEATH(_exit(1), "");
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  EXPECT_DEATH(_exit(1), "");
+}
+
+# if GTEST_HAS_CLONE && GTEST_HAS_PTHREAD
+
+bool pthread_flag;
+
+void SetPthreadFlag() {
+  pthread_flag = true;
+}
+
+TEST_F(TestForDeathTest, DoesNotExecuteAtforkHooks) {
+  if (!testing::GTEST_FLAG(death_test_use_fork)) {
+    testing::GTEST_FLAG(death_test_style) = "threadsafe";
+    pthread_flag = false;
+    ASSERT_EQ(0, pthread_atfork(&SetPthreadFlag, nullptr, nullptr));
+    ASSERT_DEATH(_exit(1), "");
+    ASSERT_FALSE(pthread_flag);
+  }
+}
+
+# endif  // GTEST_HAS_CLONE && GTEST_HAS_PTHREAD
+
+// Tests that a method of another class can be used in a death test.
+TEST_F(TestForDeathTest, MethodOfAnotherClass) {
+  const MayDie x(true);
+  ASSERT_DEATH(x.MemberFunction(), "MayDie\\:\\:MemberFunction");
+}
+
+// Tests that a global function can be used in a death test.
+TEST_F(TestForDeathTest, GlobalFunction) {
+  EXPECT_DEATH(GlobalFunction(), "GlobalFunction");
+}
+
+// Tests that any value convertible to an RE works as a second
+// argument to EXPECT_DEATH.
+TEST_F(TestForDeathTest, AcceptsAnythingConvertibleToRE) {
+  static const char regex_c_str[] = "GlobalFunction";
+  EXPECT_DEATH(GlobalFunction(), regex_c_str);
+
+  const testing::internal::RE regex(regex_c_str);
+  EXPECT_DEATH(GlobalFunction(), regex);
+
+# if !GTEST_USES_PCRE
+
+  const ::std::string regex_std_str(regex_c_str);
+  EXPECT_DEATH(GlobalFunction(), regex_std_str);
+
+  // This one is tricky; a temporary pointer into another temporary.  Reference
+  // lifetime extension of the pointer is not sufficient.
+  EXPECT_DEATH(GlobalFunction(), ::std::string(regex_c_str).c_str());
+
+# endif  // !GTEST_USES_PCRE
+}
+
+// Tests that a non-void function can be used in a death test.
+TEST_F(TestForDeathTest, NonVoidFunction) {
+  ASSERT_DEATH(NonVoidFunction(), "NonVoidFunction");
+}
+
+// Tests that functions that take parameter(s) can be used in a death test.
+TEST_F(TestForDeathTest, FunctionWithParameter) {
+  EXPECT_DEATH(DieIf(true), "DieIf\\(\\)");
+  EXPECT_DEATH(DieIfLessThan(2, 3), "DieIfLessThan");
+}
+
+// Tests that ASSERT_DEATH can be used outside a TEST, TEST_F, or test fixture.
+TEST_F(TestForDeathTest, OutsideFixture) {
+  DeathTestSubroutine();
+}
+
+// Tests that death tests can be done inside a loop.
+TEST_F(TestForDeathTest, InsideLoop) {
+  for (int i = 0; i < 5; i++) {
+    EXPECT_DEATH(DieIfLessThan(-1, i), "DieIfLessThan") << "where i == " << i;
+  }
+}
+
+// Tests that a compound statement can be used in a death test.
+TEST_F(TestForDeathTest, CompoundStatement) {
+  EXPECT_DEATH({  // NOLINT
+    const int x = 2;
+    const int y = x + 1;
+    DieIfLessThan(x, y);
+  },
+  "DieIfLessThan");
+}
+
+// Tests that code that doesn't die causes a death test to fail.
+TEST_F(TestForDeathTest, DoesNotDie) {
+  EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(DieIf(false), "DieIf"),
+                          "failed to die");
+}
+
+// Tests that a death test fails when the error message isn't expected.
+TEST_F(TestForDeathTest, ErrorMessageMismatch) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_DEATH(DieIf(true), "DieIfLessThan") << "End of death test message.";
+  }, "died but not with expected error");
+}
+
+// On exit, *aborted will be true if and only if the EXPECT_DEATH()
+// statement aborted the function.
+void ExpectDeathTestHelper(bool* aborted) {
+  *aborted = true;
+  EXPECT_DEATH(DieIf(false), "DieIf");  // This assertion should fail.
+  *aborted = false;
+}
+
+// Tests that EXPECT_DEATH doesn't abort the test on failure.
+TEST_F(TestForDeathTest, EXPECT_DEATH) {
+  bool aborted = true;
+  EXPECT_NONFATAL_FAILURE(ExpectDeathTestHelper(&aborted),
+                          "failed to die");
+  EXPECT_FALSE(aborted);
+}
+
+// Tests that ASSERT_DEATH does abort the test on failure.
+TEST_F(TestForDeathTest, ASSERT_DEATH) {
+  static bool aborted;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    aborted = true;
+    ASSERT_DEATH(DieIf(false), "DieIf");  // This assertion should fail.
+    aborted = false;
+  }, "failed to die");
+  EXPECT_TRUE(aborted);
+}
+
+// Tests that EXPECT_DEATH evaluates the arguments exactly once.
+TEST_F(TestForDeathTest, SingleEvaluation) {
+  int x = 3;
+  EXPECT_DEATH(DieIf((++x) == 4), "DieIf");
+
+  const char* regex = "DieIf";
+  const char* regex_save = regex;
+  EXPECT_DEATH(DieIfLessThan(3, 4), regex++);
+  EXPECT_EQ(regex_save + 1, regex);
+}
+
+// Tests that run-away death tests are reported as failures.
+TEST_F(TestForDeathTest, RunawayIsFailure) {
+  EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(static_cast<void>(0), "Foo"),
+                          "failed to die.");
+}
+
+// Tests that death tests report executing 'return' in the statement as
+// failure.
+TEST_F(TestForDeathTest, ReturnIsFailure) {
+  EXPECT_FATAL_FAILURE(ASSERT_DEATH(return, "Bar"),
+                       "illegal return in test statement.");
+}
+
+// Tests that EXPECT_DEBUG_DEATH works as expected, that is, you can stream a
+// message to it, and in debug mode it:
+// 1. Asserts on death.
+// 2. Has no side effect.
+//
+// And in opt mode, it:
+// 1.  Has side effects but does not assert.
+TEST_F(TestForDeathTest, TestExpectDebugDeath) {
+  int sideeffect = 0;
+
+  // Put the regex in a local variable to make sure we don't get an "unused"
+  // warning in opt mode.
+  const char* regex = "death.*DieInDebugElse12";
+
+  EXPECT_DEBUG_DEATH(DieInDebugElse12(&sideeffect), regex)
+      << "Must accept a streamed message";
+
+# ifdef NDEBUG
+
+  // Checks that the assignment occurs in opt mode (sideeffect).
+  EXPECT_EQ(12, sideeffect);
+
+# else
+
+  // Checks that the assignment does not occur in dbg mode (no sideeffect).
+  EXPECT_EQ(0, sideeffect);
+
+# endif
+}
+
+# if GTEST_OS_WINDOWS
+
+// Tests that EXPECT_DEBUG_DEATH works as expected when in debug mode
+// the Windows CRT crashes the process with an assertion failure.
+// 1. Asserts on death.
+// 2. Has no side effect (doesn't pop up a window or wait for user input).
+//
+// And in opt mode, it:
+// 1.  Has side effects but does not assert.
+TEST_F(TestForDeathTest, CRTDebugDeath) {
+  int sideeffect = 0;
+
+  // Put the regex in a local variable to make sure we don't get an "unused"
+  // warning in opt mode.
+  const char* regex = "dup.* : Assertion failed";
+
+  EXPECT_DEBUG_DEATH(DieInCRTDebugElse12(&sideeffect), regex)
+      << "Must accept a streamed message";
+
+# ifdef NDEBUG
+
+  // Checks that the assignment occurs in opt mode (sideeffect).
+  EXPECT_EQ(12, sideeffect);
+
+# else
+
+  // Checks that the assignment does not occur in dbg mode (no sideeffect).
+  EXPECT_EQ(0, sideeffect);
+
+# endif
+}
+
+# endif  // GTEST_OS_WINDOWS
+
+// Tests that ASSERT_DEBUG_DEATH works as expected, that is, you can stream a
+// message to it, and in debug mode it:
+// 1. Asserts on death.
+// 2. Has no side effect.
+//
+// And in opt mode, it:
+// 1.  Has side effects but does not assert.
+TEST_F(TestForDeathTest, TestAssertDebugDeath) {
+  int sideeffect = 0;
+
+  ASSERT_DEBUG_DEATH(DieInDebugElse12(&sideeffect), "death.*DieInDebugElse12")
+      << "Must accept a streamed message";
+
+# ifdef NDEBUG
+
+  // Checks that the assignment occurs in opt mode (sideeffect).
+  EXPECT_EQ(12, sideeffect);
+
+# else
+
+  // Checks that the assignment does not occur in dbg mode (no sideeffect).
+  EXPECT_EQ(0, sideeffect);
+
+# endif
+}
+
+# ifndef NDEBUG
+
+void ExpectDebugDeathHelper(bool* aborted) {
+  *aborted = true;
+  EXPECT_DEBUG_DEATH(return, "") << "This is expected to fail.";
+  *aborted = false;
+}
+
+#  if GTEST_OS_WINDOWS
+TEST(PopUpDeathTest, DoesNotShowPopUpOnAbort) {
+  printf("This test should be considered failing if it shows "
+         "any pop-up dialogs.\n");
+  fflush(stdout);
+
+  EXPECT_DEATH({
+    testing::GTEST_FLAG(catch_exceptions) = false;
+    abort();
+  }, "");
+}
+#  endif  // GTEST_OS_WINDOWS
+
+// Tests that EXPECT_DEBUG_DEATH in debug mode does not abort
+// the function.
+TEST_F(TestForDeathTest, ExpectDebugDeathDoesNotAbort) {
+  bool aborted = true;
+  EXPECT_NONFATAL_FAILURE(ExpectDebugDeathHelper(&aborted), "");
+  EXPECT_FALSE(aborted);
+}
+
+void AssertDebugDeathHelper(bool* aborted) {
+  *aborted = true;
+  GTEST_LOG_(INFO) << "Before ASSERT_DEBUG_DEATH";
+  ASSERT_DEBUG_DEATH(GTEST_LOG_(INFO) << "In ASSERT_DEBUG_DEATH"; return, "")
+      << "This is expected to fail.";
+  GTEST_LOG_(INFO) << "After ASSERT_DEBUG_DEATH";
+  *aborted = false;
+}
+
+// Tests that ASSERT_DEBUG_DEATH in debug mode aborts the function on
+// failure.
+TEST_F(TestForDeathTest, AssertDebugDeathAborts) {
+  static bool aborted;
+  aborted = false;
+  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
+  EXPECT_TRUE(aborted);
+}
+
+TEST_F(TestForDeathTest, AssertDebugDeathAborts2) {
+  static bool aborted;
+  aborted = false;
+  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
+  EXPECT_TRUE(aborted);
+}
+
+TEST_F(TestForDeathTest, AssertDebugDeathAborts3) {
+  static bool aborted;
+  aborted = false;
+  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
+  EXPECT_TRUE(aborted);
+}
+
+TEST_F(TestForDeathTest, AssertDebugDeathAborts4) {
+  static bool aborted;
+  aborted = false;
+  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
+  EXPECT_TRUE(aborted);
+}
+
+TEST_F(TestForDeathTest, AssertDebugDeathAborts5) {
+  static bool aborted;
+  aborted = false;
+  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
+  EXPECT_TRUE(aborted);
+}
+
+TEST_F(TestForDeathTest, AssertDebugDeathAborts6) {
+  static bool aborted;
+  aborted = false;
+  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
+  EXPECT_TRUE(aborted);
+}
+
+TEST_F(TestForDeathTest, AssertDebugDeathAborts7) {
+  static bool aborted;
+  aborted = false;
+  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
+  EXPECT_TRUE(aborted);
+}
+
+TEST_F(TestForDeathTest, AssertDebugDeathAborts8) {
+  static bool aborted;
+  aborted = false;
+  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
+  EXPECT_TRUE(aborted);
+}
+
+TEST_F(TestForDeathTest, AssertDebugDeathAborts9) {
+  static bool aborted;
+  aborted = false;
+  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
+  EXPECT_TRUE(aborted);
+}
+
+TEST_F(TestForDeathTest, AssertDebugDeathAborts10) {
+  static bool aborted;
+  aborted = false;
+  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
+  EXPECT_TRUE(aborted);
+}
+
+# endif  // _NDEBUG
+
+// Tests the *_EXIT family of macros, using a variety of predicates.
+static void TestExitMacros() {
+  EXPECT_EXIT(_exit(1),  testing::ExitedWithCode(1),  "");
+  ASSERT_EXIT(_exit(42), testing::ExitedWithCode(42), "");
+
+# if GTEST_OS_WINDOWS
+
+  // Of all signals effects on the process exit code, only those of SIGABRT
+  // are documented on Windows.
+  // See https://msdn.microsoft.com/en-us/query-bi/m/dwwzkt4c.
+  EXPECT_EXIT(raise(SIGABRT), testing::ExitedWithCode(3), "") << "b_ar";
+
+# elif !GTEST_OS_FUCHSIA
+
+  // Fuchsia has no unix signals.
+  EXPECT_EXIT(raise(SIGKILL), testing::KilledBySignal(SIGKILL), "") << "foo";
+  ASSERT_EXIT(raise(SIGUSR2), testing::KilledBySignal(SIGUSR2), "") << "bar";
+
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_EXIT(_exit(0), testing::KilledBySignal(SIGSEGV), "")
+      << "This failure is expected, too.";
+  }, "This failure is expected, too.");
+
+# endif  // GTEST_OS_WINDOWS
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_EXIT(raise(SIGSEGV), testing::ExitedWithCode(0), "")
+      << "This failure is expected.";
+  }, "This failure is expected.");
+}
+
+TEST_F(TestForDeathTest, ExitMacros) {
+  TestExitMacros();
+}
+
+TEST_F(TestForDeathTest, ExitMacrosUsingFork) {
+  testing::GTEST_FLAG(death_test_use_fork) = true;
+  TestExitMacros();
+}
+
+TEST_F(TestForDeathTest, InvalidStyle) {
+  testing::GTEST_FLAG(death_test_style) = "rococo";
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_DEATH(_exit(0), "") << "This failure is expected.";
+  }, "This failure is expected.");
+}
+
+TEST_F(TestForDeathTest, DeathTestFailedOutput) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_DEATH(DieWithMessage("death\n"),
+                   "expected message"),
+      "Actual msg:\n"
+      "[  DEATH   ] death\n");
+}
+
+TEST_F(TestForDeathTest, DeathTestUnexpectedReturnOutput) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_DEATH({
+          fprintf(stderr, "returning\n");
+          fflush(stderr);
+          return;
+        }, ""),
+      "    Result: illegal return in test statement.\n"
+      " Error msg:\n"
+      "[  DEATH   ] returning\n");
+}
+
+TEST_F(TestForDeathTest, DeathTestBadExitCodeOutput) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_EXIT(DieWithMessage("exiting with rc 1\n"),
+                  testing::ExitedWithCode(3),
+                  "expected message"),
+      "    Result: died but not with expected exit code:\n"
+      "            Exited with exit status 1\n"
+      "Actual msg:\n"
+      "[  DEATH   ] exiting with rc 1\n");
+}
+
+TEST_F(TestForDeathTest, DeathTestMultiLineMatchFail) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_DEATH(DieWithMessage("line 1\nline 2\nline 3\n"),
+                   "line 1\nxyz\nline 3\n"),
+      "Actual msg:\n"
+      "[  DEATH   ] line 1\n"
+      "[  DEATH   ] line 2\n"
+      "[  DEATH   ] line 3\n");
+}
+
+TEST_F(TestForDeathTest, DeathTestMultiLineMatchPass) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  EXPECT_DEATH(DieWithMessage("line 1\nline 2\nline 3\n"),
+               "line 1\nline 2\nline 3\n");
+}
+
+// A DeathTestFactory that returns MockDeathTests.
+class MockDeathTestFactory : public DeathTestFactory {
+ public:
+  MockDeathTestFactory();
+  bool Create(const char* statement,
+              testing::Matcher<const std::string&> matcher, const char* file,
+              int line, DeathTest** test) override;
+
+  // Sets the parameters for subsequent calls to Create.
+  void SetParameters(bool create, DeathTest::TestRole role,
+                     int status, bool passed);
+
+  // Accessors.
+  int AssumeRoleCalls() const { return assume_role_calls_; }
+  int WaitCalls() const { return wait_calls_; }
+  size_t PassedCalls() const { return passed_args_.size(); }
+  bool PassedArgument(int n) const {
+    return passed_args_[static_cast<size_t>(n)];
+  }
+  size_t AbortCalls() const { return abort_args_.size(); }
+  DeathTest::AbortReason AbortArgument(int n) const {
+    return abort_args_[static_cast<size_t>(n)];
+  }
+  bool TestDeleted() const { return test_deleted_; }
+
+ private:
+  friend class MockDeathTest;
+  // If true, Create will return a MockDeathTest; otherwise it returns
+  // NULL.
+  bool create_;
+  // The value a MockDeathTest will return from its AssumeRole method.
+  DeathTest::TestRole role_;
+  // The value a MockDeathTest will return from its Wait method.
+  int status_;
+  // The value a MockDeathTest will return from its Passed method.
+  bool passed_;
+
+  // Number of times AssumeRole was called.
+  int assume_role_calls_;
+  // Number of times Wait was called.
+  int wait_calls_;
+  // The arguments to the calls to Passed since the last call to
+  // SetParameters.
+  std::vector<bool> passed_args_;
+  // The arguments to the calls to Abort since the last call to
+  // SetParameters.
+  std::vector<DeathTest::AbortReason> abort_args_;
+  // True if the last MockDeathTest returned by Create has been
+  // deleted.
+  bool test_deleted_;
+};
+
+
+// A DeathTest implementation useful in testing.  It returns values set
+// at its creation from its various inherited DeathTest methods, and
+// reports calls to those methods to its parent MockDeathTestFactory
+// object.
+class MockDeathTest : public DeathTest {
+ public:
+  MockDeathTest(MockDeathTestFactory *parent,
+                TestRole role, int status, bool passed) :
+      parent_(parent), role_(role), status_(status), passed_(passed) {
+  }
+  ~MockDeathTest() override { parent_->test_deleted_ = true; }
+  TestRole AssumeRole() override {
+    ++parent_->assume_role_calls_;
+    return role_;
+  }
+  int Wait() override {
+    ++parent_->wait_calls_;
+    return status_;
+  }
+  bool Passed(bool exit_status_ok) override {
+    parent_->passed_args_.push_back(exit_status_ok);
+    return passed_;
+  }
+  void Abort(AbortReason reason) override {
+    parent_->abort_args_.push_back(reason);
+  }
+
+ private:
+  MockDeathTestFactory* const parent_;
+  const TestRole role_;
+  const int status_;
+  const bool passed_;
+};
+
+
+// MockDeathTestFactory constructor.
+MockDeathTestFactory::MockDeathTestFactory()
+    : create_(true),
+      role_(DeathTest::OVERSEE_TEST),
+      status_(0),
+      passed_(true),
+      assume_role_calls_(0),
+      wait_calls_(0),
+      passed_args_(),
+      abort_args_() {
+}
+
+
+// Sets the parameters for subsequent calls to Create.
+void MockDeathTestFactory::SetParameters(bool create,
+                                         DeathTest::TestRole role,
+                                         int status, bool passed) {
+  create_ = create;
+  role_ = role;
+  status_ = status;
+  passed_ = passed;
+
+  assume_role_calls_ = 0;
+  wait_calls_ = 0;
+  passed_args_.clear();
+  abort_args_.clear();
+}
+
+
+// Sets test to NULL (if create_ is false) or to the address of a new
+// MockDeathTest object with parameters taken from the last call
+// to SetParameters (if create_ is true).  Always returns true.
+bool MockDeathTestFactory::Create(
+    const char* /*statement*/, testing::Matcher<const std::string&> /*matcher*/,
+    const char* /*file*/, int /*line*/, DeathTest** test) {
+  test_deleted_ = false;
+  if (create_) {
+    *test = new MockDeathTest(this, role_, status_, passed_);
+  } else {
+    *test = nullptr;
+  }
+  return true;
+}
+
+// A test fixture for testing the logic of the GTEST_DEATH_TEST_ macro.
+// It installs a MockDeathTestFactory that is used for the duration
+// of the test case.
+class MacroLogicDeathTest : public testing::Test {
+ protected:
+  static testing::internal::ReplaceDeathTestFactory* replacer_;
+  static MockDeathTestFactory* factory_;
+
+  static void SetUpTestSuite() {
+    factory_ = new MockDeathTestFactory;
+    replacer_ = new testing::internal::ReplaceDeathTestFactory(factory_);
+  }
+
+  static void TearDownTestSuite() {
+    delete replacer_;
+    replacer_ = nullptr;
+    delete factory_;
+    factory_ = nullptr;
+  }
+
+  // Runs a death test that breaks the rules by returning.  Such a death
+  // test cannot be run directly from a test routine that uses a
+  // MockDeathTest, or the remainder of the routine will not be executed.
+  static void RunReturningDeathTest(bool* flag) {
+    ASSERT_DEATH({  // NOLINT
+      *flag = true;
+      return;
+    }, "");
+  }
+};
+
+testing::internal::ReplaceDeathTestFactory* MacroLogicDeathTest::replacer_ =
+    nullptr;
+MockDeathTestFactory* MacroLogicDeathTest::factory_ = nullptr;
+
+// Test that nothing happens when the factory doesn't return a DeathTest:
+TEST_F(MacroLogicDeathTest, NothingHappens) {
+  bool flag = false;
+  factory_->SetParameters(false, DeathTest::OVERSEE_TEST, 0, true);
+  EXPECT_DEATH(flag = true, "");
+  EXPECT_FALSE(flag);
+  EXPECT_EQ(0, factory_->AssumeRoleCalls());
+  EXPECT_EQ(0, factory_->WaitCalls());
+  EXPECT_EQ(0U, factory_->PassedCalls());
+  EXPECT_EQ(0U, factory_->AbortCalls());
+  EXPECT_FALSE(factory_->TestDeleted());
+}
+
+// Test that the parent process doesn't run the death test code,
+// and that the Passed method returns false when the (simulated)
+// child process exits with status 0:
+TEST_F(MacroLogicDeathTest, ChildExitsSuccessfully) {
+  bool flag = false;
+  factory_->SetParameters(true, DeathTest::OVERSEE_TEST, 0, true);
+  EXPECT_DEATH(flag = true, "");
+  EXPECT_FALSE(flag);
+  EXPECT_EQ(1, factory_->AssumeRoleCalls());
+  EXPECT_EQ(1, factory_->WaitCalls());
+  ASSERT_EQ(1U, factory_->PassedCalls());
+  EXPECT_FALSE(factory_->PassedArgument(0));
+  EXPECT_EQ(0U, factory_->AbortCalls());
+  EXPECT_TRUE(factory_->TestDeleted());
+}
+
+// Tests that the Passed method was given the argument "true" when
+// the (simulated) child process exits with status 1:
+TEST_F(MacroLogicDeathTest, ChildExitsUnsuccessfully) {
+  bool flag = false;
+  factory_->SetParameters(true, DeathTest::OVERSEE_TEST, 1, true);
+  EXPECT_DEATH(flag = true, "");
+  EXPECT_FALSE(flag);
+  EXPECT_EQ(1, factory_->AssumeRoleCalls());
+  EXPECT_EQ(1, factory_->WaitCalls());
+  ASSERT_EQ(1U, factory_->PassedCalls());
+  EXPECT_TRUE(factory_->PassedArgument(0));
+  EXPECT_EQ(0U, factory_->AbortCalls());
+  EXPECT_TRUE(factory_->TestDeleted());
+}
+
+// Tests that the (simulated) child process executes the death test
+// code, and is aborted with the correct AbortReason if it
+// executes a return statement.
+TEST_F(MacroLogicDeathTest, ChildPerformsReturn) {
+  bool flag = false;
+  factory_->SetParameters(true, DeathTest::EXECUTE_TEST, 0, true);
+  RunReturningDeathTest(&flag);
+  EXPECT_TRUE(flag);
+  EXPECT_EQ(1, factory_->AssumeRoleCalls());
+  EXPECT_EQ(0, factory_->WaitCalls());
+  EXPECT_EQ(0U, factory_->PassedCalls());
+  EXPECT_EQ(1U, factory_->AbortCalls());
+  EXPECT_EQ(DeathTest::TEST_ENCOUNTERED_RETURN_STATEMENT,
+            factory_->AbortArgument(0));
+  EXPECT_TRUE(factory_->TestDeleted());
+}
+
+// Tests that the (simulated) child process is aborted with the
+// correct AbortReason if it does not die.
+TEST_F(MacroLogicDeathTest, ChildDoesNotDie) {
+  bool flag = false;
+  factory_->SetParameters(true, DeathTest::EXECUTE_TEST, 0, true);
+  EXPECT_DEATH(flag = true, "");
+  EXPECT_TRUE(flag);
+  EXPECT_EQ(1, factory_->AssumeRoleCalls());
+  EXPECT_EQ(0, factory_->WaitCalls());
+  EXPECT_EQ(0U, factory_->PassedCalls());
+  // This time there are two calls to Abort: one since the test didn't
+  // die, and another from the ReturnSentinel when it's destroyed.  The
+  // sentinel normally isn't destroyed if a test doesn't die, since
+  // _exit(2) is called in that case by ForkingDeathTest, but not by
+  // our MockDeathTest.
+  ASSERT_EQ(2U, factory_->AbortCalls());
+  EXPECT_EQ(DeathTest::TEST_DID_NOT_DIE,
+            factory_->AbortArgument(0));
+  EXPECT_EQ(DeathTest::TEST_ENCOUNTERED_RETURN_STATEMENT,
+            factory_->AbortArgument(1));
+  EXPECT_TRUE(factory_->TestDeleted());
+}
+
+// Tests that a successful death test does not register a successful
+// test part.
+TEST(SuccessRegistrationDeathTest, NoSuccessPart) {
+  EXPECT_DEATH(_exit(1), "");
+  EXPECT_EQ(0, GetUnitTestImpl()->current_test_result()->total_part_count());
+}
+
+TEST(StreamingAssertionsDeathTest, DeathTest) {
+  EXPECT_DEATH(_exit(1), "") << "unexpected failure";
+  ASSERT_DEATH(_exit(1), "") << "unexpected failure";
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_DEATH(_exit(0), "") << "expected failure";
+  }, "expected failure");
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_DEATH(_exit(0), "") << "expected failure";
+  }, "expected failure");
+}
+
+// Tests that GetLastErrnoDescription returns an empty string when the
+// last error is 0 and non-empty string when it is non-zero.
+TEST(GetLastErrnoDescription, GetLastErrnoDescriptionWorks) {
+  errno = ENOENT;
+  EXPECT_STRNE("", GetLastErrnoDescription().c_str());
+  errno = 0;
+  EXPECT_STREQ("", GetLastErrnoDescription().c_str());
+}
+
+# if GTEST_OS_WINDOWS
+TEST(AutoHandleTest, AutoHandleWorks) {
+  HANDLE handle = ::CreateEvent(NULL, FALSE, FALSE, NULL);
+  ASSERT_NE(INVALID_HANDLE_VALUE, handle);
+
+  // Tests that the AutoHandle is correctly initialized with a handle.
+  testing::internal::AutoHandle auto_handle(handle);
+  EXPECT_EQ(handle, auto_handle.Get());
+
+  // Tests that Reset assigns INVALID_HANDLE_VALUE.
+  // Note that this cannot verify whether the original handle is closed.
+  auto_handle.Reset();
+  EXPECT_EQ(INVALID_HANDLE_VALUE, auto_handle.Get());
+
+  // Tests that Reset assigns the new handle.
+  // Note that this cannot verify whether the original handle is closed.
+  handle = ::CreateEvent(NULL, FALSE, FALSE, NULL);
+  ASSERT_NE(INVALID_HANDLE_VALUE, handle);
+  auto_handle.Reset(handle);
+  EXPECT_EQ(handle, auto_handle.Get());
+
+  // Tests that AutoHandle contains INVALID_HANDLE_VALUE by default.
+  testing::internal::AutoHandle auto_handle2;
+  EXPECT_EQ(INVALID_HANDLE_VALUE, auto_handle2.Get());
+}
+# endif  // GTEST_OS_WINDOWS
+
+# if GTEST_OS_WINDOWS
+typedef unsigned __int64 BiggestParsable;
+typedef signed __int64 BiggestSignedParsable;
+# else
+typedef unsigned long long BiggestParsable;
+typedef signed long long BiggestSignedParsable;
+# endif  // GTEST_OS_WINDOWS
+
+// We cannot use std::numeric_limits<T>::max() as it clashes with the
+// max() macro defined by <windows.h>.
+const BiggestParsable kBiggestParsableMax = ULLONG_MAX;
+const BiggestSignedParsable kBiggestSignedParsableMax = LLONG_MAX;
+
+TEST(ParseNaturalNumberTest, RejectsInvalidFormat) {
+  BiggestParsable result = 0;
+
+  // Rejects non-numbers.
+  EXPECT_FALSE(ParseNaturalNumber("non-number string", &result));
+
+  // Rejects numbers with whitespace prefix.
+  EXPECT_FALSE(ParseNaturalNumber(" 123", &result));
+
+  // Rejects negative numbers.
+  EXPECT_FALSE(ParseNaturalNumber("-123", &result));
+
+  // Rejects numbers starting with a plus sign.
+  EXPECT_FALSE(ParseNaturalNumber("+123", &result));
+  errno = 0;
+}
+
+TEST(ParseNaturalNumberTest, RejectsOverflownNumbers) {
+  BiggestParsable result = 0;
+
+  EXPECT_FALSE(ParseNaturalNumber("99999999999999999999999", &result));
+
+  signed char char_result = 0;
+  EXPECT_FALSE(ParseNaturalNumber("200", &char_result));
+  errno = 0;
+}
+
+TEST(ParseNaturalNumberTest, AcceptsValidNumbers) {
+  BiggestParsable result = 0;
+
+  result = 0;
+  ASSERT_TRUE(ParseNaturalNumber("123", &result));
+  EXPECT_EQ(123U, result);
+
+  // Check 0 as an edge case.
+  result = 1;
+  ASSERT_TRUE(ParseNaturalNumber("0", &result));
+  EXPECT_EQ(0U, result);
+
+  result = 1;
+  ASSERT_TRUE(ParseNaturalNumber("00000", &result));
+  EXPECT_EQ(0U, result);
+}
+
+TEST(ParseNaturalNumberTest, AcceptsTypeLimits) {
+  Message msg;
+  msg << kBiggestParsableMax;
+
+  BiggestParsable result = 0;
+  EXPECT_TRUE(ParseNaturalNumber(msg.GetString(), &result));
+  EXPECT_EQ(kBiggestParsableMax, result);
+
+  Message msg2;
+  msg2 << kBiggestSignedParsableMax;
+
+  BiggestSignedParsable signed_result = 0;
+  EXPECT_TRUE(ParseNaturalNumber(msg2.GetString(), &signed_result));
+  EXPECT_EQ(kBiggestSignedParsableMax, signed_result);
+
+  Message msg3;
+  msg3 << INT_MAX;
+
+  int int_result = 0;
+  EXPECT_TRUE(ParseNaturalNumber(msg3.GetString(), &int_result));
+  EXPECT_EQ(INT_MAX, int_result);
+
+  Message msg4;
+  msg4 << UINT_MAX;
+
+  unsigned int uint_result = 0;
+  EXPECT_TRUE(ParseNaturalNumber(msg4.GetString(), &uint_result));
+  EXPECT_EQ(UINT_MAX, uint_result);
+}
+
+TEST(ParseNaturalNumberTest, WorksForShorterIntegers) {
+  short short_result = 0;
+  ASSERT_TRUE(ParseNaturalNumber("123", &short_result));
+  EXPECT_EQ(123, short_result);
+
+  signed char char_result = 0;
+  ASSERT_TRUE(ParseNaturalNumber("123", &char_result));
+  EXPECT_EQ(123, char_result);
+}
+
+# if GTEST_OS_WINDOWS
+TEST(EnvironmentTest, HandleFitsIntoSizeT) {
+  ASSERT_TRUE(sizeof(HANDLE) <= sizeof(size_t));
+}
+# endif  // GTEST_OS_WINDOWS
+
+// Tests that EXPECT_DEATH_IF_SUPPORTED/ASSERT_DEATH_IF_SUPPORTED trigger
+// failures when death tests are available on the system.
+TEST(ConditionalDeathMacrosDeathTest, ExpectsDeathWhenDeathTestsAvailable) {
+  EXPECT_DEATH_IF_SUPPORTED(DieInside("CondDeathTestExpectMacro"),
+                            "death inside CondDeathTestExpectMacro");
+  ASSERT_DEATH_IF_SUPPORTED(DieInside("CondDeathTestAssertMacro"),
+                            "death inside CondDeathTestAssertMacro");
+
+  // Empty statement will not crash, which must trigger a failure.
+  EXPECT_NONFATAL_FAILURE(EXPECT_DEATH_IF_SUPPORTED(;, ""), "");
+  EXPECT_FATAL_FAILURE(ASSERT_DEATH_IF_SUPPORTED(;, ""), "");
+}
+
+TEST(InDeathTestChildDeathTest, ReportsDeathTestCorrectlyInFastStyle) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  EXPECT_FALSE(InDeathTestChild());
+  EXPECT_DEATH({
+    fprintf(stderr, InDeathTestChild() ? "Inside" : "Outside");
+    fflush(stderr);
+    _exit(1);
+  }, "Inside");
+}
+
+TEST(InDeathTestChildDeathTest, ReportsDeathTestCorrectlyInThreadSafeStyle) {
+  testing::GTEST_FLAG(death_test_style) = "threadsafe";
+  EXPECT_FALSE(InDeathTestChild());
+  EXPECT_DEATH({
+    fprintf(stderr, InDeathTestChild() ? "Inside" : "Outside");
+    fflush(stderr);
+    _exit(1);
+  }, "Inside");
+}
+
+void DieWithMessage(const char* message) {
+  fputs(message, stderr);
+  fflush(stderr);  // Make sure the text is printed before the process exits.
+  _exit(1);
+}
+
+TEST(MatcherDeathTest, DoesNotBreakBareRegexMatching) {
+  // googletest tests this, of course; here we ensure that including googlemock
+  // has not broken it.
+  EXPECT_DEATH(DieWithMessage("O, I die, Horatio."), "I d[aeiou]e");
+}
+
+TEST(MatcherDeathTest, MonomorphicMatcherMatches) {
+  EXPECT_DEATH(DieWithMessage("Behind O, I am slain!"),
+               Matcher<const std::string&>(ContainsRegex("I am slain")));
+}
+
+TEST(MatcherDeathTest, MonomorphicMatcherDoesNotMatch) {
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_DEATH(
+          DieWithMessage("Behind O, I am slain!"),
+          Matcher<const std::string&>(ContainsRegex("Ow, I am slain"))),
+      "Expected: contains regular expression \"Ow, I am slain\"");
+}
+
+TEST(MatcherDeathTest, PolymorphicMatcherMatches) {
+  EXPECT_DEATH(DieWithMessage("The rest is silence."),
+               ContainsRegex("rest is silence"));
+}
+
+TEST(MatcherDeathTest, PolymorphicMatcherDoesNotMatch) {
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_DEATH(DieWithMessage("The rest is silence."),
+                   ContainsRegex("rest is science")),
+      "Expected: contains regular expression \"rest is science\"");
+}
+
+}  // namespace
+
+#else  // !GTEST_HAS_DEATH_TEST follows
+
+namespace {
+
+using testing::internal::CaptureStderr;
+using testing::internal::GetCapturedStderr;
+
+// Tests that EXPECT_DEATH_IF_SUPPORTED/ASSERT_DEATH_IF_SUPPORTED are still
+// defined but do not trigger failures when death tests are not available on
+// the system.
+TEST(ConditionalDeathMacrosTest, WarnsWhenDeathTestsNotAvailable) {
+  // Empty statement will not crash, but that should not trigger a failure
+  // when death tests are not supported.
+  CaptureStderr();
+  EXPECT_DEATH_IF_SUPPORTED(;, "");
+  std::string output = GetCapturedStderr();
+  ASSERT_TRUE(NULL != strstr(output.c_str(),
+                             "Death tests are not supported on this platform"));
+  ASSERT_TRUE(NULL != strstr(output.c_str(), ";"));
+
+  // The streamed message should not be printed as there is no test failure.
+  CaptureStderr();
+  EXPECT_DEATH_IF_SUPPORTED(;, "") << "streamed message";
+  output = GetCapturedStderr();
+  ASSERT_TRUE(NULL == strstr(output.c_str(), "streamed message"));
+
+  CaptureStderr();
+  ASSERT_DEATH_IF_SUPPORTED(;, "");  // NOLINT
+  output = GetCapturedStderr();
+  ASSERT_TRUE(NULL != strstr(output.c_str(),
+                             "Death tests are not supported on this platform"));
+  ASSERT_TRUE(NULL != strstr(output.c_str(), ";"));
+
+  CaptureStderr();
+  ASSERT_DEATH_IF_SUPPORTED(;, "") << "streamed message";  // NOLINT
+  output = GetCapturedStderr();
+  ASSERT_TRUE(NULL == strstr(output.c_str(), "streamed message"));
+}
+
+void FuncWithAssert(int* n) {
+  ASSERT_DEATH_IF_SUPPORTED(return;, "");
+  (*n)++;
+}
+
+// Tests that ASSERT_DEATH_IF_SUPPORTED does not return from the current
+// function (as ASSERT_DEATH does) if death tests are not supported.
+TEST(ConditionalDeathMacrosTest, AssertDeatDoesNotReturnhIfUnsupported) {
+  int n = 0;
+  FuncWithAssert(&n);
+  EXPECT_EQ(1, n);
+}
+
+}  // namespace
+
+#endif  // !GTEST_HAS_DEATH_TEST
+
+namespace {
+
+// Tests that the death test macros expand to code which may or may not
+// be followed by operator<<, and that in either case the complete text
+// comprises only a single C++ statement.
+//
+// The syntax should work whether death tests are available or not.
+TEST(ConditionalDeathMacrosSyntaxDeathTest, SingleStatement) {
+  if (AlwaysFalse())
+    // This would fail if executed; this is a compilation test only
+    ASSERT_DEATH_IF_SUPPORTED(return, "");
+
+  if (AlwaysTrue())
+    EXPECT_DEATH_IF_SUPPORTED(_exit(1), "");
+  else
+    // This empty "else" branch is meant to ensure that EXPECT_DEATH
+    // doesn't expand into an "if" statement without an "else"
+    ;  // NOLINT
+
+  if (AlwaysFalse())
+    ASSERT_DEATH_IF_SUPPORTED(return, "") << "did not die";
+
+  if (AlwaysFalse())
+    ;  // NOLINT
+  else
+    EXPECT_DEATH_IF_SUPPORTED(_exit(1), "") << 1 << 2 << 3;
+}
+
+// Tests that conditional death test macros expand to code which interacts
+// well with switch statements.
+TEST(ConditionalDeathMacrosSyntaxDeathTest, SwitchStatement) {
+  // Microsoft compiler usually complains about switch statements without
+  // case labels. We suppress that warning for this test.
+  GTEST_DISABLE_MSC_WARNINGS_PUSH_(4065)
+
+  switch (0)
+    default:
+      ASSERT_DEATH_IF_SUPPORTED(_exit(1), "")
+          << "exit in default switch handler";
+
+  switch (0)
+    case 0:
+      EXPECT_DEATH_IF_SUPPORTED(_exit(1), "") << "exit in switch case";
+
+  GTEST_DISABLE_MSC_WARNINGS_POP_()
+}
+
+// Tests that a test case whose name ends with "DeathTest" works fine
+// on Windows.
+TEST(NotADeathTest, Test) {
+  SUCCEED();
+}
+
+}  // namespace
diff --git a/build/_deps/googletest-src/googletest/test/googletest-death-test_ex_test.cc b/build/_deps/googletest-src/googletest/test/googletest-death-test_ex_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7ea5b9468e3b29175fff06614d6815c4649a5ac7
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-death-test_ex_test.cc
@@ -0,0 +1,92 @@
+// Copyright 2010, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Tests that verify interaction of exceptions and death tests.
+
+#include "gtest/gtest-death-test.h"
+#include "gtest/gtest.h"
+
+#if GTEST_HAS_DEATH_TEST
+
+# if GTEST_HAS_SEH
+#  include <windows.h>          // For RaiseException().
+# endif
+
+# include "gtest/gtest-spi.h"
+
+# if GTEST_HAS_EXCEPTIONS
+
+#  include <exception>  // For std::exception.
+
+// Tests that death tests report thrown exceptions as failures and that the
+// exceptions do not escape death test macros.
+TEST(CxxExceptionDeathTest, ExceptionIsFailure) {
+  try {
+    EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(throw 1, ""), "threw an exception");
+  } catch (...) {  // NOLINT
+    FAIL() << "An exception escaped a death test macro invocation "
+           << "with catch_exceptions "
+           << (testing::GTEST_FLAG(catch_exceptions) ? "enabled" : "disabled");
+  }
+}
+
+class TestException : public std::exception {
+ public:
+  const char* what() const throw() override { return "exceptional message"; }
+};
+
+TEST(CxxExceptionDeathTest, PrintsMessageForStdExceptions) {
+  // Verifies that the exception message is quoted in the failure text.
+  EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(throw TestException(), ""),
+                          "exceptional message");
+  // Verifies that the location is mentioned in the failure text.
+  EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(throw TestException(), ""),
+                          __FILE__);
+}
+# endif  // GTEST_HAS_EXCEPTIONS
+
+# if GTEST_HAS_SEH
+// Tests that enabling interception of SEH exceptions with the
+// catch_exceptions flag does not interfere with SEH exceptions being
+// treated as death by death tests.
+TEST(SehExceptionDeasTest, CatchExceptionsDoesNotInterfere) {
+  EXPECT_DEATH(RaiseException(42, 0x0, 0, NULL), "")
+      << "with catch_exceptions "
+      << (testing::GTEST_FLAG(catch_exceptions) ? "enabled" : "disabled");
+}
+# endif
+
+#endif  // GTEST_HAS_DEATH_TEST
+
+int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+  testing::GTEST_FLAG(catch_exceptions) = GTEST_ENABLE_CATCH_EXCEPTIONS_ != 0;
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googletest/test/googletest-env-var-test.py b/build/_deps/googletest-src/googletest/test/googletest-env-var-test.py
new file mode 100755
index 0000000000000000000000000000000000000000..2f0e406afcfc09dc11754c5fd9dd49a8956ddc91
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-env-var-test.py
@@ -0,0 +1,117 @@
+#!/usr/bin/env python
+#
+# Copyright 2008, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Verifies that Google Test correctly parses environment variables."""
+
+import os
+import gtest_test_utils
+
+
+IS_WINDOWS = os.name == 'nt'
+IS_LINUX = os.name == 'posix' and os.uname()[0] == 'Linux'
+
+COMMAND = gtest_test_utils.GetTestExecutablePath('googletest-env-var-test_')
+
+environ = os.environ.copy()
+
+
+def AssertEq(expected, actual):
+  if expected != actual:
+    print('Expected: %s' % (expected,))
+    print('  Actual: %s' % (actual,))
+    raise AssertionError
+
+
+def SetEnvVar(env_var, value):
+  """Sets the env variable to 'value'; unsets it when 'value' is None."""
+
+  if value is not None:
+    environ[env_var] = value
+  elif env_var in environ:
+    del environ[env_var]
+
+
+def GetFlag(flag):
+  """Runs googletest-env-var-test_ and returns its output."""
+
+  args = [COMMAND]
+  if flag is not None:
+    args += [flag]
+  return gtest_test_utils.Subprocess(args, env=environ).output
+
+
+def TestFlag(flag, test_val, default_val):
+  """Verifies that the given flag is affected by the corresponding env var."""
+
+  env_var = 'GTEST_' + flag.upper()
+  SetEnvVar(env_var, test_val)
+  AssertEq(test_val, GetFlag(flag))
+  SetEnvVar(env_var, None)
+  AssertEq(default_val, GetFlag(flag))
+
+
+class GTestEnvVarTest(gtest_test_utils.TestCase):
+
+  def testEnvVarAffectsFlag(self):
+    """Tests that environment variable should affect the corresponding flag."""
+
+    TestFlag('break_on_failure', '1', '0')
+    TestFlag('color', 'yes', 'auto')
+    TestFlag('filter', 'FooTest.Bar', '*')
+    SetEnvVar('XML_OUTPUT_FILE', None)  # For 'output' test
+    TestFlag('output', 'xml:tmp/foo.xml', '')
+    TestFlag('print_time', '0', '1')
+    TestFlag('repeat', '999', '1')
+    TestFlag('throw_on_failure', '1', '0')
+    TestFlag('death_test_style', 'threadsafe', 'fast')
+    TestFlag('catch_exceptions', '0', '1')
+
+    if IS_LINUX:
+      TestFlag('death_test_use_fork', '1', '0')
+      TestFlag('stack_trace_depth', '0', '100')
+
+
+  def testXmlOutputFile(self):
+    """Tests that $XML_OUTPUT_FILE affects the output flag."""
+
+    SetEnvVar('GTEST_OUTPUT', None)
+    SetEnvVar('XML_OUTPUT_FILE', 'tmp/bar.xml')
+    AssertEq('xml:tmp/bar.xml', GetFlag('output'))
+
+  def testXmlOutputFileOverride(self):
+    """Tests that $XML_OUTPUT_FILE is overridden by $GTEST_OUTPUT."""
+
+    SetEnvVar('GTEST_OUTPUT', 'xml:tmp/foo.xml')
+    SetEnvVar('XML_OUTPUT_FILE', 'tmp/bar.xml')
+    AssertEq('xml:tmp/foo.xml', GetFlag('output'))
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-env-var-test_.cc b/build/_deps/googletest-src/googletest/test/googletest-env-var-test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..fd2aa82f74faa21201e79ae0e5c3b568553df337
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-env-var-test_.cc
@@ -0,0 +1,122 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// A helper program for testing that Google Test parses the environment
+// variables correctly.
+
+#include <iostream>
+
+#include "gtest/gtest.h"
+#include "src/gtest-internal-inl.h"
+
+using ::std::cout;
+
+namespace testing {
+
+// The purpose of this is to make the test more realistic by ensuring
+// that the UnitTest singleton is created before main() is entered.
+// We don't actual run the TEST itself.
+TEST(GTestEnvVarTest, Dummy) {
+}
+
+void PrintFlag(const char* flag) {
+  if (strcmp(flag, "break_on_failure") == 0) {
+    cout << GTEST_FLAG(break_on_failure);
+    return;
+  }
+
+  if (strcmp(flag, "catch_exceptions") == 0) {
+    cout << GTEST_FLAG(catch_exceptions);
+    return;
+  }
+
+  if (strcmp(flag, "color") == 0) {
+    cout << GTEST_FLAG(color);
+    return;
+  }
+
+  if (strcmp(flag, "death_test_style") == 0) {
+    cout << GTEST_FLAG(death_test_style);
+    return;
+  }
+
+  if (strcmp(flag, "death_test_use_fork") == 0) {
+    cout << GTEST_FLAG(death_test_use_fork);
+    return;
+  }
+
+  if (strcmp(flag, "filter") == 0) {
+    cout << GTEST_FLAG(filter);
+    return;
+  }
+
+  if (strcmp(flag, "output") == 0) {
+    cout << GTEST_FLAG(output);
+    return;
+  }
+
+  if (strcmp(flag, "print_time") == 0) {
+    cout << GTEST_FLAG(print_time);
+    return;
+  }
+
+  if (strcmp(flag, "repeat") == 0) {
+    cout << GTEST_FLAG(repeat);
+    return;
+  }
+
+  if (strcmp(flag, "stack_trace_depth") == 0) {
+    cout << GTEST_FLAG(stack_trace_depth);
+    return;
+  }
+
+  if (strcmp(flag, "throw_on_failure") == 0) {
+    cout << GTEST_FLAG(throw_on_failure);
+    return;
+  }
+
+  cout << "Invalid flag name " << flag
+       << ".  Valid names are break_on_failure, color, filter, etc.\n";
+  exit(1);
+}
+
+}  // namespace testing
+
+int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+
+  if (argc != 2) {
+    cout << "Usage: googletest-env-var-test_ NAME_OF_FLAG\n";
+    return 1;
+  }
+
+  testing::PrintFlag(argv[1]);
+  return 0;
+}
diff --git a/build/_deps/googletest-src/googletest/test/googletest-filepath-test.cc b/build/_deps/googletest-src/googletest/test/googletest-filepath-test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..aafad36f3fef449f46ba77db20ecc966b5720b77
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-filepath-test.cc
@@ -0,0 +1,649 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Google Test filepath utilities
+//
+// This file tests classes and functions used internally by
+// Google Test.  They are subject to change without notice.
+//
+// This file is #included from gtest-internal.h.
+// Do not #include this file anywhere else!
+
+#include "gtest/internal/gtest-filepath.h"
+#include "gtest/gtest.h"
+#include "src/gtest-internal-inl.h"
+
+#if GTEST_OS_WINDOWS_MOBILE
+# include <windows.h>  // NOLINT
+#elif GTEST_OS_WINDOWS
+# include <direct.h>  // NOLINT
+#endif  // GTEST_OS_WINDOWS_MOBILE
+
+namespace testing {
+namespace internal {
+namespace {
+
+#if GTEST_OS_WINDOWS_MOBILE
+
+// Windows CE doesn't have the remove C function.
+int remove(const char* path) {
+  LPCWSTR wpath = String::AnsiToUtf16(path);
+  int ret = DeleteFile(wpath) ? 0 : -1;
+  delete [] wpath;
+  return ret;
+}
+// Windows CE doesn't have the _rmdir C function.
+int _rmdir(const char* path) {
+  FilePath filepath(path);
+  LPCWSTR wpath = String::AnsiToUtf16(
+      filepath.RemoveTrailingPathSeparator().c_str());
+  int ret = RemoveDirectory(wpath) ? 0 : -1;
+  delete [] wpath;
+  return ret;
+}
+
+#else
+
+TEST(GetCurrentDirTest, ReturnsCurrentDir) {
+  const FilePath original_dir = FilePath::GetCurrentDir();
+  EXPECT_FALSE(original_dir.IsEmpty());
+
+  posix::ChDir(GTEST_PATH_SEP_);
+  const FilePath cwd = FilePath::GetCurrentDir();
+  posix::ChDir(original_dir.c_str());
+
+# if GTEST_OS_WINDOWS || GTEST_OS_OS2
+
+  // Skips the ":".
+  const char* const cwd_without_drive = strchr(cwd.c_str(), ':');
+  ASSERT_TRUE(cwd_without_drive != NULL);
+  EXPECT_STREQ(GTEST_PATH_SEP_, cwd_without_drive + 1);
+
+# else
+
+  EXPECT_EQ(GTEST_PATH_SEP_, cwd.string());
+
+# endif
+}
+
+#endif  // GTEST_OS_WINDOWS_MOBILE
+
+TEST(IsEmptyTest, ReturnsTrueForEmptyPath) {
+  EXPECT_TRUE(FilePath("").IsEmpty());
+}
+
+TEST(IsEmptyTest, ReturnsFalseForNonEmptyPath) {
+  EXPECT_FALSE(FilePath("a").IsEmpty());
+  EXPECT_FALSE(FilePath(".").IsEmpty());
+  EXPECT_FALSE(FilePath("a/b").IsEmpty());
+  EXPECT_FALSE(FilePath("a\\b\\").IsEmpty());
+}
+
+// RemoveDirectoryName "" -> ""
+TEST(RemoveDirectoryNameTest, WhenEmptyName) {
+  EXPECT_EQ("", FilePath("").RemoveDirectoryName().string());
+}
+
+// RemoveDirectoryName "afile" -> "afile"
+TEST(RemoveDirectoryNameTest, ButNoDirectory) {
+  EXPECT_EQ("afile",
+      FilePath("afile").RemoveDirectoryName().string());
+}
+
+// RemoveDirectoryName "/afile" -> "afile"
+TEST(RemoveDirectoryNameTest, RootFileShouldGiveFileName) {
+  EXPECT_EQ("afile",
+      FilePath(GTEST_PATH_SEP_ "afile").RemoveDirectoryName().string());
+}
+
+// RemoveDirectoryName "adir/" -> ""
+TEST(RemoveDirectoryNameTest, WhereThereIsNoFileName) {
+  EXPECT_EQ("",
+      FilePath("adir" GTEST_PATH_SEP_).RemoveDirectoryName().string());
+}
+
+// RemoveDirectoryName "adir/afile" -> "afile"
+TEST(RemoveDirectoryNameTest, ShouldGiveFileName) {
+  EXPECT_EQ("afile",
+      FilePath("adir" GTEST_PATH_SEP_ "afile").RemoveDirectoryName().string());
+}
+
+// RemoveDirectoryName "adir/subdir/afile" -> "afile"
+TEST(RemoveDirectoryNameTest, ShouldAlsoGiveFileName) {
+  EXPECT_EQ("afile",
+      FilePath("adir" GTEST_PATH_SEP_ "subdir" GTEST_PATH_SEP_ "afile")
+      .RemoveDirectoryName().string());
+}
+
+#if GTEST_HAS_ALT_PATH_SEP_
+
+// Tests that RemoveDirectoryName() works with the alternate separator
+// on Windows.
+
+// RemoveDirectoryName("/afile") -> "afile"
+TEST(RemoveDirectoryNameTest, RootFileShouldGiveFileNameForAlternateSeparator) {
+  EXPECT_EQ("afile", FilePath("/afile").RemoveDirectoryName().string());
+}
+
+// RemoveDirectoryName("adir/") -> ""
+TEST(RemoveDirectoryNameTest, WhereThereIsNoFileNameForAlternateSeparator) {
+  EXPECT_EQ("", FilePath("adir/").RemoveDirectoryName().string());
+}
+
+// RemoveDirectoryName("adir/afile") -> "afile"
+TEST(RemoveDirectoryNameTest, ShouldGiveFileNameForAlternateSeparator) {
+  EXPECT_EQ("afile", FilePath("adir/afile").RemoveDirectoryName().string());
+}
+
+// RemoveDirectoryName("adir/subdir/afile") -> "afile"
+TEST(RemoveDirectoryNameTest, ShouldAlsoGiveFileNameForAlternateSeparator) {
+  EXPECT_EQ("afile",
+            FilePath("adir/subdir/afile").RemoveDirectoryName().string());
+}
+
+#endif
+
+// RemoveFileName "" -> "./"
+TEST(RemoveFileNameTest, EmptyName) {
+#if GTEST_OS_WINDOWS_MOBILE
+  // On Windows CE, we use the root as the current directory.
+  EXPECT_EQ(GTEST_PATH_SEP_, FilePath("").RemoveFileName().string());
+#else
+  EXPECT_EQ("." GTEST_PATH_SEP_, FilePath("").RemoveFileName().string());
+#endif
+}
+
+// RemoveFileName "adir/" -> "adir/"
+TEST(RemoveFileNameTest, ButNoFile) {
+  EXPECT_EQ("adir" GTEST_PATH_SEP_,
+      FilePath("adir" GTEST_PATH_SEP_).RemoveFileName().string());
+}
+
+// RemoveFileName "adir/afile" -> "adir/"
+TEST(RemoveFileNameTest, GivesDirName) {
+  EXPECT_EQ("adir" GTEST_PATH_SEP_,
+            FilePath("adir" GTEST_PATH_SEP_ "afile").RemoveFileName().string());
+}
+
+// RemoveFileName "adir/subdir/afile" -> "adir/subdir/"
+TEST(RemoveFileNameTest, GivesDirAndSubDirName) {
+  EXPECT_EQ("adir" GTEST_PATH_SEP_ "subdir" GTEST_PATH_SEP_,
+      FilePath("adir" GTEST_PATH_SEP_ "subdir" GTEST_PATH_SEP_ "afile")
+      .RemoveFileName().string());
+}
+
+// RemoveFileName "/afile" -> "/"
+TEST(RemoveFileNameTest, GivesRootDir) {
+  EXPECT_EQ(GTEST_PATH_SEP_,
+      FilePath(GTEST_PATH_SEP_ "afile").RemoveFileName().string());
+}
+
+#if GTEST_HAS_ALT_PATH_SEP_
+
+// Tests that RemoveFileName() works with the alternate separator on
+// Windows.
+
+// RemoveFileName("adir/") -> "adir/"
+TEST(RemoveFileNameTest, ButNoFileForAlternateSeparator) {
+  EXPECT_EQ("adir" GTEST_PATH_SEP_,
+            FilePath("adir/").RemoveFileName().string());
+}
+
+// RemoveFileName("adir/afile") -> "adir/"
+TEST(RemoveFileNameTest, GivesDirNameForAlternateSeparator) {
+  EXPECT_EQ("adir" GTEST_PATH_SEP_,
+            FilePath("adir/afile").RemoveFileName().string());
+}
+
+// RemoveFileName("adir/subdir/afile") -> "adir/subdir/"
+TEST(RemoveFileNameTest, GivesDirAndSubDirNameForAlternateSeparator) {
+  EXPECT_EQ("adir" GTEST_PATH_SEP_ "subdir" GTEST_PATH_SEP_,
+            FilePath("adir/subdir/afile").RemoveFileName().string());
+}
+
+// RemoveFileName("/afile") -> "\"
+TEST(RemoveFileNameTest, GivesRootDirForAlternateSeparator) {
+  EXPECT_EQ(GTEST_PATH_SEP_, FilePath("/afile").RemoveFileName().string());
+}
+
+#endif
+
+TEST(MakeFileNameTest, GenerateWhenNumberIsZero) {
+  FilePath actual = FilePath::MakeFileName(FilePath("foo"), FilePath("bar"),
+      0, "xml");
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar.xml", actual.string());
+}
+
+TEST(MakeFileNameTest, GenerateFileNameNumberGtZero) {
+  FilePath actual = FilePath::MakeFileName(FilePath("foo"), FilePath("bar"),
+      12, "xml");
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar_12.xml", actual.string());
+}
+
+TEST(MakeFileNameTest, GenerateFileNameWithSlashNumberIsZero) {
+  FilePath actual = FilePath::MakeFileName(FilePath("foo" GTEST_PATH_SEP_),
+      FilePath("bar"), 0, "xml");
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar.xml", actual.string());
+}
+
+TEST(MakeFileNameTest, GenerateFileNameWithSlashNumberGtZero) {
+  FilePath actual = FilePath::MakeFileName(FilePath("foo" GTEST_PATH_SEP_),
+      FilePath("bar"), 12, "xml");
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar_12.xml", actual.string());
+}
+
+TEST(MakeFileNameTest, GenerateWhenNumberIsZeroAndDirIsEmpty) {
+  FilePath actual = FilePath::MakeFileName(FilePath(""), FilePath("bar"),
+      0, "xml");
+  EXPECT_EQ("bar.xml", actual.string());
+}
+
+TEST(MakeFileNameTest, GenerateWhenNumberIsNotZeroAndDirIsEmpty) {
+  FilePath actual = FilePath::MakeFileName(FilePath(""), FilePath("bar"),
+      14, "xml");
+  EXPECT_EQ("bar_14.xml", actual.string());
+}
+
+TEST(ConcatPathsTest, WorksWhenDirDoesNotEndWithPathSep) {
+  FilePath actual = FilePath::ConcatPaths(FilePath("foo"),
+                                          FilePath("bar.xml"));
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar.xml", actual.string());
+}
+
+TEST(ConcatPathsTest, WorksWhenPath1EndsWithPathSep) {
+  FilePath actual = FilePath::ConcatPaths(FilePath("foo" GTEST_PATH_SEP_),
+                                          FilePath("bar.xml"));
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar.xml", actual.string());
+}
+
+TEST(ConcatPathsTest, Path1BeingEmpty) {
+  FilePath actual = FilePath::ConcatPaths(FilePath(""),
+                                          FilePath("bar.xml"));
+  EXPECT_EQ("bar.xml", actual.string());
+}
+
+TEST(ConcatPathsTest, Path2BeingEmpty) {
+  FilePath actual = FilePath::ConcatPaths(FilePath("foo"), FilePath(""));
+  EXPECT_EQ("foo" GTEST_PATH_SEP_, actual.string());
+}
+
+TEST(ConcatPathsTest, BothPathBeingEmpty) {
+  FilePath actual = FilePath::ConcatPaths(FilePath(""),
+                                          FilePath(""));
+  EXPECT_EQ("", actual.string());
+}
+
+TEST(ConcatPathsTest, Path1ContainsPathSep) {
+  FilePath actual = FilePath::ConcatPaths(FilePath("foo" GTEST_PATH_SEP_ "bar"),
+                                          FilePath("foobar.xml"));
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar" GTEST_PATH_SEP_ "foobar.xml",
+            actual.string());
+}
+
+TEST(ConcatPathsTest, Path2ContainsPathSep) {
+  FilePath actual = FilePath::ConcatPaths(
+      FilePath("foo" GTEST_PATH_SEP_),
+      FilePath("bar" GTEST_PATH_SEP_ "bar.xml"));
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar" GTEST_PATH_SEP_ "bar.xml",
+            actual.string());
+}
+
+TEST(ConcatPathsTest, Path2EndsWithPathSep) {
+  FilePath actual = FilePath::ConcatPaths(FilePath("foo"),
+                                          FilePath("bar" GTEST_PATH_SEP_));
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar" GTEST_PATH_SEP_, actual.string());
+}
+
+// RemoveTrailingPathSeparator "" -> ""
+TEST(RemoveTrailingPathSeparatorTest, EmptyString) {
+  EXPECT_EQ("", FilePath("").RemoveTrailingPathSeparator().string());
+}
+
+// RemoveTrailingPathSeparator "foo" -> "foo"
+TEST(RemoveTrailingPathSeparatorTest, FileNoSlashString) {
+  EXPECT_EQ("foo", FilePath("foo").RemoveTrailingPathSeparator().string());
+}
+
+// RemoveTrailingPathSeparator "foo/" -> "foo"
+TEST(RemoveTrailingPathSeparatorTest, ShouldRemoveTrailingSeparator) {
+  EXPECT_EQ("foo",
+      FilePath("foo" GTEST_PATH_SEP_).RemoveTrailingPathSeparator().string());
+#if GTEST_HAS_ALT_PATH_SEP_
+  EXPECT_EQ("foo", FilePath("foo/").RemoveTrailingPathSeparator().string());
+#endif
+}
+
+// RemoveTrailingPathSeparator "foo/bar/" -> "foo/bar/"
+TEST(RemoveTrailingPathSeparatorTest, ShouldRemoveLastSeparator) {
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar",
+            FilePath("foo" GTEST_PATH_SEP_ "bar" GTEST_PATH_SEP_)
+                .RemoveTrailingPathSeparator().string());
+}
+
+// RemoveTrailingPathSeparator "foo/bar" -> "foo/bar"
+TEST(RemoveTrailingPathSeparatorTest, ShouldReturnUnmodified) {
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar",
+            FilePath("foo" GTEST_PATH_SEP_ "bar")
+                .RemoveTrailingPathSeparator().string());
+}
+
+TEST(DirectoryTest, RootDirectoryExists) {
+#if GTEST_OS_WINDOWS  // We are on Windows.
+  char current_drive[_MAX_PATH];  // NOLINT
+  current_drive[0] = static_cast<char>(_getdrive() + 'A' - 1);
+  current_drive[1] = ':';
+  current_drive[2] = '\\';
+  current_drive[3] = '\0';
+  EXPECT_TRUE(FilePath(current_drive).DirectoryExists());
+#else
+  EXPECT_TRUE(FilePath("/").DirectoryExists());
+#endif  // GTEST_OS_WINDOWS
+}
+
+#if GTEST_OS_WINDOWS
+TEST(DirectoryTest, RootOfWrongDriveDoesNotExists) {
+  const int saved_drive_ = _getdrive();
+  // Find a drive that doesn't exist. Start with 'Z' to avoid common ones.
+  for (char drive = 'Z'; drive >= 'A'; drive--)
+    if (_chdrive(drive - 'A' + 1) == -1) {
+      char non_drive[_MAX_PATH];  // NOLINT
+      non_drive[0] = drive;
+      non_drive[1] = ':';
+      non_drive[2] = '\\';
+      non_drive[3] = '\0';
+      EXPECT_FALSE(FilePath(non_drive).DirectoryExists());
+      break;
+    }
+  _chdrive(saved_drive_);
+}
+#endif  // GTEST_OS_WINDOWS
+
+#if !GTEST_OS_WINDOWS_MOBILE
+// Windows CE _does_ consider an empty directory to exist.
+TEST(DirectoryTest, EmptyPathDirectoryDoesNotExist) {
+  EXPECT_FALSE(FilePath("").DirectoryExists());
+}
+#endif  // !GTEST_OS_WINDOWS_MOBILE
+
+TEST(DirectoryTest, CurrentDirectoryExists) {
+#if GTEST_OS_WINDOWS  // We are on Windows.
+# ifndef _WIN32_CE  // Windows CE doesn't have a current directory.
+
+  EXPECT_TRUE(FilePath(".").DirectoryExists());
+  EXPECT_TRUE(FilePath(".\\").DirectoryExists());
+
+# endif  // _WIN32_CE
+#else
+  EXPECT_TRUE(FilePath(".").DirectoryExists());
+  EXPECT_TRUE(FilePath("./").DirectoryExists());
+#endif  // GTEST_OS_WINDOWS
+}
+
+// "foo/bar" == foo//bar" == "foo///bar"
+TEST(NormalizeTest, MultipleConsecutiveSepaparatorsInMidstring) {
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar",
+            FilePath("foo" GTEST_PATH_SEP_ "bar").string());
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar",
+            FilePath("foo" GTEST_PATH_SEP_ GTEST_PATH_SEP_ "bar").string());
+  EXPECT_EQ("foo" GTEST_PATH_SEP_ "bar",
+            FilePath("foo" GTEST_PATH_SEP_ GTEST_PATH_SEP_
+                     GTEST_PATH_SEP_ "bar").string());
+}
+
+// "/bar" == //bar" == "///bar"
+TEST(NormalizeTest, MultipleConsecutiveSepaparatorsAtStringStart) {
+  EXPECT_EQ(GTEST_PATH_SEP_ "bar",
+    FilePath(GTEST_PATH_SEP_ "bar").string());
+  EXPECT_EQ(GTEST_PATH_SEP_ "bar",
+    FilePath(GTEST_PATH_SEP_ GTEST_PATH_SEP_ "bar").string());
+  EXPECT_EQ(GTEST_PATH_SEP_ "bar",
+    FilePath(GTEST_PATH_SEP_ GTEST_PATH_SEP_ GTEST_PATH_SEP_ "bar").string());
+}
+
+// "foo/" == foo//" == "foo///"
+TEST(NormalizeTest, MultipleConsecutiveSepaparatorsAtStringEnd) {
+  EXPECT_EQ("foo" GTEST_PATH_SEP_,
+    FilePath("foo" GTEST_PATH_SEP_).string());
+  EXPECT_EQ("foo" GTEST_PATH_SEP_,
+    FilePath("foo" GTEST_PATH_SEP_ GTEST_PATH_SEP_).string());
+  EXPECT_EQ("foo" GTEST_PATH_SEP_,
+    FilePath("foo" GTEST_PATH_SEP_ GTEST_PATH_SEP_ GTEST_PATH_SEP_).string());
+}
+
+#if GTEST_HAS_ALT_PATH_SEP_
+
+// Tests that separators at the end of the string are normalized
+// regardless of their combination (e.g. "foo\" =="foo/\" ==
+// "foo\\/").
+TEST(NormalizeTest, MixAlternateSeparatorAtStringEnd) {
+  EXPECT_EQ("foo" GTEST_PATH_SEP_,
+            FilePath("foo/").string());
+  EXPECT_EQ("foo" GTEST_PATH_SEP_,
+            FilePath("foo" GTEST_PATH_SEP_ "/").string());
+  EXPECT_EQ("foo" GTEST_PATH_SEP_,
+            FilePath("foo//" GTEST_PATH_SEP_).string());
+}
+
+#endif
+
+TEST(AssignmentOperatorTest, DefaultAssignedToNonDefault) {
+  FilePath default_path;
+  FilePath non_default_path("path");
+  non_default_path = default_path;
+  EXPECT_EQ("", non_default_path.string());
+  EXPECT_EQ("", default_path.string());  // RHS var is unchanged.
+}
+
+TEST(AssignmentOperatorTest, NonDefaultAssignedToDefault) {
+  FilePath non_default_path("path");
+  FilePath default_path;
+  default_path = non_default_path;
+  EXPECT_EQ("path", default_path.string());
+  EXPECT_EQ("path", non_default_path.string());  // RHS var is unchanged.
+}
+
+TEST(AssignmentOperatorTest, ConstAssignedToNonConst) {
+  const FilePath const_default_path("const_path");
+  FilePath non_default_path("path");
+  non_default_path = const_default_path;
+  EXPECT_EQ("const_path", non_default_path.string());
+}
+
+class DirectoryCreationTest : public Test {
+ protected:
+  void SetUp() override {
+    testdata_path_.Set(FilePath(
+        TempDir() + GetCurrentExecutableName().string() +
+        "_directory_creation" GTEST_PATH_SEP_ "test" GTEST_PATH_SEP_));
+    testdata_file_.Set(testdata_path_.RemoveTrailingPathSeparator());
+
+    unique_file0_.Set(FilePath::MakeFileName(testdata_path_, FilePath("unique"),
+        0, "txt"));
+    unique_file1_.Set(FilePath::MakeFileName(testdata_path_, FilePath("unique"),
+        1, "txt"));
+
+    remove(testdata_file_.c_str());
+    remove(unique_file0_.c_str());
+    remove(unique_file1_.c_str());
+    posix::RmDir(testdata_path_.c_str());
+  }
+
+  void TearDown() override {
+    remove(testdata_file_.c_str());
+    remove(unique_file0_.c_str());
+    remove(unique_file1_.c_str());
+    posix::RmDir(testdata_path_.c_str());
+  }
+
+  void CreateTextFile(const char* filename) {
+    FILE* f = posix::FOpen(filename, "w");
+    fprintf(f, "text\n");
+    fclose(f);
+  }
+
+  // Strings representing a directory and a file, with identical paths
+  // except for the trailing separator character that distinquishes
+  // a directory named 'test' from a file named 'test'. Example names:
+  FilePath testdata_path_;  // "/tmp/directory_creation/test/"
+  FilePath testdata_file_;  // "/tmp/directory_creation/test"
+  FilePath unique_file0_;  // "/tmp/directory_creation/test/unique.txt"
+  FilePath unique_file1_;  // "/tmp/directory_creation/test/unique_1.txt"
+};
+
+TEST_F(DirectoryCreationTest, CreateDirectoriesRecursively) {
+  EXPECT_FALSE(testdata_path_.DirectoryExists()) << testdata_path_.string();
+  EXPECT_TRUE(testdata_path_.CreateDirectoriesRecursively());
+  EXPECT_TRUE(testdata_path_.DirectoryExists());
+}
+
+TEST_F(DirectoryCreationTest, CreateDirectoriesForAlreadyExistingPath) {
+  EXPECT_FALSE(testdata_path_.DirectoryExists()) << testdata_path_.string();
+  EXPECT_TRUE(testdata_path_.CreateDirectoriesRecursively());
+  // Call 'create' again... should still succeed.
+  EXPECT_TRUE(testdata_path_.CreateDirectoriesRecursively());
+}
+
+TEST_F(DirectoryCreationTest, CreateDirectoriesAndUniqueFilename) {
+  FilePath file_path(FilePath::GenerateUniqueFileName(testdata_path_,
+      FilePath("unique"), "txt"));
+  EXPECT_EQ(unique_file0_.string(), file_path.string());
+  EXPECT_FALSE(file_path.FileOrDirectoryExists());  // file not there
+
+  testdata_path_.CreateDirectoriesRecursively();
+  EXPECT_FALSE(file_path.FileOrDirectoryExists());  // file still not there
+  CreateTextFile(file_path.c_str());
+  EXPECT_TRUE(file_path.FileOrDirectoryExists());
+
+  FilePath file_path2(FilePath::GenerateUniqueFileName(testdata_path_,
+      FilePath("unique"), "txt"));
+  EXPECT_EQ(unique_file1_.string(), file_path2.string());
+  EXPECT_FALSE(file_path2.FileOrDirectoryExists());  // file not there
+  CreateTextFile(file_path2.c_str());
+  EXPECT_TRUE(file_path2.FileOrDirectoryExists());
+}
+
+TEST_F(DirectoryCreationTest, CreateDirectoriesFail) {
+  // force a failure by putting a file where we will try to create a directory.
+  CreateTextFile(testdata_file_.c_str());
+  EXPECT_TRUE(testdata_file_.FileOrDirectoryExists());
+  EXPECT_FALSE(testdata_file_.DirectoryExists());
+  EXPECT_FALSE(testdata_file_.CreateDirectoriesRecursively());
+}
+
+TEST(NoDirectoryCreationTest, CreateNoDirectoriesForDefaultXmlFile) {
+  const FilePath test_detail_xml("test_detail.xml");
+  EXPECT_FALSE(test_detail_xml.CreateDirectoriesRecursively());
+}
+
+TEST(FilePathTest, DefaultConstructor) {
+  FilePath fp;
+  EXPECT_EQ("", fp.string());
+}
+
+TEST(FilePathTest, CharAndCopyConstructors) {
+  const FilePath fp("spicy");
+  EXPECT_EQ("spicy", fp.string());
+
+  const FilePath fp_copy(fp);
+  EXPECT_EQ("spicy", fp_copy.string());
+}
+
+TEST(FilePathTest, StringConstructor) {
+  const FilePath fp(std::string("cider"));
+  EXPECT_EQ("cider", fp.string());
+}
+
+TEST(FilePathTest, Set) {
+  const FilePath apple("apple");
+  FilePath mac("mac");
+  mac.Set(apple);  // Implement Set() since overloading operator= is forbidden.
+  EXPECT_EQ("apple", mac.string());
+  EXPECT_EQ("apple", apple.string());
+}
+
+TEST(FilePathTest, ToString) {
+  const FilePath file("drink");
+  EXPECT_EQ("drink", file.string());
+}
+
+TEST(FilePathTest, RemoveExtension) {
+  EXPECT_EQ("app", FilePath("app.cc").RemoveExtension("cc").string());
+  EXPECT_EQ("app", FilePath("app.exe").RemoveExtension("exe").string());
+  EXPECT_EQ("APP", FilePath("APP.EXE").RemoveExtension("exe").string());
+}
+
+TEST(FilePathTest, RemoveExtensionWhenThereIsNoExtension) {
+  EXPECT_EQ("app", FilePath("app").RemoveExtension("exe").string());
+}
+
+TEST(FilePathTest, IsDirectory) {
+  EXPECT_FALSE(FilePath("cola").IsDirectory());
+  EXPECT_TRUE(FilePath("koala" GTEST_PATH_SEP_).IsDirectory());
+#if GTEST_HAS_ALT_PATH_SEP_
+  EXPECT_TRUE(FilePath("koala/").IsDirectory());
+#endif
+}
+
+TEST(FilePathTest, IsAbsolutePath) {
+  EXPECT_FALSE(FilePath("is" GTEST_PATH_SEP_ "relative").IsAbsolutePath());
+  EXPECT_FALSE(FilePath("").IsAbsolutePath());
+#if GTEST_OS_WINDOWS
+  EXPECT_TRUE(FilePath("c:\\" GTEST_PATH_SEP_ "is_not"
+                       GTEST_PATH_SEP_ "relative").IsAbsolutePath());
+  EXPECT_FALSE(FilePath("c:foo" GTEST_PATH_SEP_ "bar").IsAbsolutePath());
+  EXPECT_TRUE(FilePath("c:/" GTEST_PATH_SEP_ "is_not"
+                       GTEST_PATH_SEP_ "relative").IsAbsolutePath());
+#else
+  EXPECT_TRUE(FilePath(GTEST_PATH_SEP_ "is_not" GTEST_PATH_SEP_ "relative")
+              .IsAbsolutePath());
+#endif  // GTEST_OS_WINDOWS
+}
+
+TEST(FilePathTest, IsRootDirectory) {
+#if GTEST_OS_WINDOWS
+  EXPECT_TRUE(FilePath("a:\\").IsRootDirectory());
+  EXPECT_TRUE(FilePath("Z:/").IsRootDirectory());
+  EXPECT_TRUE(FilePath("e://").IsRootDirectory());
+  EXPECT_FALSE(FilePath("").IsRootDirectory());
+  EXPECT_FALSE(FilePath("b:").IsRootDirectory());
+  EXPECT_FALSE(FilePath("b:a").IsRootDirectory());
+  EXPECT_FALSE(FilePath("8:/").IsRootDirectory());
+  EXPECT_FALSE(FilePath("c|/").IsRootDirectory());
+#else
+  EXPECT_TRUE(FilePath("/").IsRootDirectory());
+  EXPECT_TRUE(FilePath("//").IsRootDirectory());
+  EXPECT_FALSE(FilePath("").IsRootDirectory());
+  EXPECT_FALSE(FilePath("\\").IsRootDirectory());
+  EXPECT_FALSE(FilePath("/x").IsRootDirectory());
+#endif
+}
+
+}  // namespace
+}  // namespace internal
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googletest/test/googletest-filter-unittest.py b/build/_deps/googletest-src/googletest/test/googletest-filter-unittest.py
new file mode 100755
index 0000000000000000000000000000000000000000..6b32f2d21997189a3cd9eaf313d470bdd84fcc11
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-filter-unittest.py
@@ -0,0 +1,639 @@
+#!/usr/bin/env python
+#
+# Copyright 2005 Google Inc. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Unit test for Google Test test filters.
+
+A user can specify which test(s) in a Google Test program to run via either
+the GTEST_FILTER environment variable or the --gtest_filter flag.
+This script tests such functionality by invoking
+googletest-filter-unittest_ (a program written with Google Test) with different
+environments and command line flags.
+
+Note that test sharding may also influence which tests are filtered. Therefore,
+we test that here also.
+"""
+
+import os
+import re
+try:
+  from sets import Set as set  # For Python 2.3 compatibility
+except ImportError:
+  pass
+import sys
+import gtest_test_utils
+
+# Constants.
+
+# Checks if this platform can pass empty environment variables to child
+# processes.  We set an env variable to an empty string and invoke a python
+# script in a subprocess to print whether the variable is STILL in
+# os.environ.  We then use 'eval' to parse the child's output so that an
+# exception is thrown if the input is anything other than 'True' nor 'False'.
+CAN_PASS_EMPTY_ENV = False
+if sys.executable:
+  os.environ['EMPTY_VAR'] = ''
+  child = gtest_test_utils.Subprocess(
+      [sys.executable, '-c', 'import os; print(\'EMPTY_VAR\' in os.environ)'])
+  CAN_PASS_EMPTY_ENV = eval(child.output)
+
+
+# Check if this platform can unset environment variables in child processes.
+# We set an env variable to a non-empty string, unset it, and invoke
+# a python script in a subprocess to print whether the variable
+# is NO LONGER in os.environ.
+# We use 'eval' to parse the child's output so that an exception
+# is thrown if the input is neither 'True' nor 'False'.
+CAN_UNSET_ENV = False
+if sys.executable:
+  os.environ['UNSET_VAR'] = 'X'
+  del os.environ['UNSET_VAR']
+  child = gtest_test_utils.Subprocess(
+      [sys.executable, '-c', 'import os; print(\'UNSET_VAR\' not in os.environ)'
+      ])
+  CAN_UNSET_ENV = eval(child.output)
+
+
+# Checks if we should test with an empty filter. This doesn't
+# make sense on platforms that cannot pass empty env variables (Win32)
+# and on platforms that cannot unset variables (since we cannot tell
+# the difference between "" and NULL -- Borland and Solaris < 5.10)
+CAN_TEST_EMPTY_FILTER = (CAN_PASS_EMPTY_ENV and CAN_UNSET_ENV)
+
+
+# The environment variable for specifying the test filters.
+FILTER_ENV_VAR = 'GTEST_FILTER'
+
+# The environment variables for test sharding.
+TOTAL_SHARDS_ENV_VAR = 'GTEST_TOTAL_SHARDS'
+SHARD_INDEX_ENV_VAR = 'GTEST_SHARD_INDEX'
+SHARD_STATUS_FILE_ENV_VAR = 'GTEST_SHARD_STATUS_FILE'
+
+# The command line flag for specifying the test filters.
+FILTER_FLAG = 'gtest_filter'
+
+# The command line flag for including disabled tests.
+ALSO_RUN_DISABLED_TESTS_FLAG = 'gtest_also_run_disabled_tests'
+
+# Command to run the googletest-filter-unittest_ program.
+COMMAND = gtest_test_utils.GetTestExecutablePath('googletest-filter-unittest_')
+
+# Regex for determining whether parameterized tests are enabled in the binary.
+PARAM_TEST_REGEX = re.compile(r'/ParamTest')
+
+# Regex for parsing test case names from Google Test's output.
+TEST_CASE_REGEX = re.compile(r'^\[\-+\] \d+ tests? from (\w+(/\w+)?)')
+
+# Regex for parsing test names from Google Test's output.
+TEST_REGEX = re.compile(r'^\[\s*RUN\s*\].*\.(\w+(/\w+)?)')
+
+# The command line flag to tell Google Test to output the list of tests it
+# will run.
+LIST_TESTS_FLAG = '--gtest_list_tests'
+
+# Indicates whether Google Test supports death tests.
+SUPPORTS_DEATH_TESTS = 'HasDeathTest' in gtest_test_utils.Subprocess(
+    [COMMAND, LIST_TESTS_FLAG]).output
+
+# Full names of all tests in googletest-filter-unittests_.
+PARAM_TESTS = [
+    'SeqP/ParamTest.TestX/0',
+    'SeqP/ParamTest.TestX/1',
+    'SeqP/ParamTest.TestY/0',
+    'SeqP/ParamTest.TestY/1',
+    'SeqQ/ParamTest.TestX/0',
+    'SeqQ/ParamTest.TestX/1',
+    'SeqQ/ParamTest.TestY/0',
+    'SeqQ/ParamTest.TestY/1',
+    ]
+
+DISABLED_TESTS = [
+    'BarTest.DISABLED_TestFour',
+    'BarTest.DISABLED_TestFive',
+    'BazTest.DISABLED_TestC',
+    'DISABLED_FoobarTest.Test1',
+    'DISABLED_FoobarTest.DISABLED_Test2',
+    'DISABLED_FoobarbazTest.TestA',
+    ]
+
+if SUPPORTS_DEATH_TESTS:
+  DEATH_TESTS = [
+    'HasDeathTest.Test1',
+    'HasDeathTest.Test2',
+    ]
+else:
+  DEATH_TESTS = []
+
+# All the non-disabled tests.
+ACTIVE_TESTS = [
+    'FooTest.Abc',
+    'FooTest.Xyz',
+
+    'BarTest.TestOne',
+    'BarTest.TestTwo',
+    'BarTest.TestThree',
+
+    'BazTest.TestOne',
+    'BazTest.TestA',
+    'BazTest.TestB',
+    ] + DEATH_TESTS + PARAM_TESTS
+
+param_tests_present = None
+
+# Utilities.
+
+environ = os.environ.copy()
+
+
+def SetEnvVar(env_var, value):
+  """Sets the env variable to 'value'; unsets it when 'value' is None."""
+
+  if value is not None:
+    environ[env_var] = value
+  elif env_var in environ:
+    del environ[env_var]
+
+
+def RunAndReturnOutput(args = None):
+  """Runs the test program and returns its output."""
+
+  return gtest_test_utils.Subprocess([COMMAND] + (args or []),
+                                     env=environ).output
+
+
+def RunAndExtractTestList(args = None):
+  """Runs the test program and returns its exit code and a list of tests run."""
+
+  p = gtest_test_utils.Subprocess([COMMAND] + (args or []), env=environ)
+  tests_run = []
+  test_case = ''
+  test = ''
+  for line in p.output.split('\n'):
+    match = TEST_CASE_REGEX.match(line)
+    if match is not None:
+      test_case = match.group(1)
+    else:
+      match = TEST_REGEX.match(line)
+      if match is not None:
+        test = match.group(1)
+        tests_run.append(test_case + '.' + test)
+  return (tests_run, p.exit_code)
+
+
+def InvokeWithModifiedEnv(extra_env, function, *args, **kwargs):
+  """Runs the given function and arguments in a modified environment."""
+  try:
+    original_env = environ.copy()
+    environ.update(extra_env)
+    return function(*args, **kwargs)
+  finally:
+    environ.clear()
+    environ.update(original_env)
+
+
+def RunWithSharding(total_shards, shard_index, command):
+  """Runs a test program shard and returns exit code and a list of tests run."""
+
+  extra_env = {SHARD_INDEX_ENV_VAR: str(shard_index),
+               TOTAL_SHARDS_ENV_VAR: str(total_shards)}
+  return InvokeWithModifiedEnv(extra_env, RunAndExtractTestList, command)
+
+# The unit test.
+
+
+class GTestFilterUnitTest(gtest_test_utils.TestCase):
+  """Tests the env variable or the command line flag to filter tests."""
+
+  # Utilities.
+
+  def AssertSetEqual(self, lhs, rhs):
+    """Asserts that two sets are equal."""
+
+    for elem in lhs:
+      self.assert_(elem in rhs, '%s in %s' % (elem, rhs))
+
+    for elem in rhs:
+      self.assert_(elem in lhs, '%s in %s' % (elem, lhs))
+
+  def AssertPartitionIsValid(self, set_var, list_of_sets):
+    """Asserts that list_of_sets is a valid partition of set_var."""
+
+    full_partition = []
+    for slice_var in list_of_sets:
+      full_partition.extend(slice_var)
+    self.assertEqual(len(set_var), len(full_partition))
+    self.assertEqual(set(set_var), set(full_partition))
+
+  def AdjustForParameterizedTests(self, tests_to_run):
+    """Adjust tests_to_run in case value parameterized tests are disabled."""
+
+    global param_tests_present
+    if not param_tests_present:
+      return list(set(tests_to_run) - set(PARAM_TESTS))
+    else:
+      return tests_to_run
+
+  def RunAndVerify(self, gtest_filter, tests_to_run):
+    """Checks that the binary runs correct set of tests for a given filter."""
+
+    tests_to_run = self.AdjustForParameterizedTests(tests_to_run)
+
+    # First, tests using the environment variable.
+
+    # Windows removes empty variables from the environment when passing it
+    # to a new process.  This means it is impossible to pass an empty filter
+    # into a process using the environment variable.  However, we can still
+    # test the case when the variable is not supplied (i.e., gtest_filter is
+    # None).
+    # pylint: disable-msg=C6403
+    if CAN_TEST_EMPTY_FILTER or gtest_filter != '':
+      SetEnvVar(FILTER_ENV_VAR, gtest_filter)
+      tests_run = RunAndExtractTestList()[0]
+      SetEnvVar(FILTER_ENV_VAR, None)
+      self.AssertSetEqual(tests_run, tests_to_run)
+    # pylint: enable-msg=C6403
+
+    # Next, tests using the command line flag.
+
+    if gtest_filter is None:
+      args = []
+    else:
+      args = ['--%s=%s' % (FILTER_FLAG, gtest_filter)]
+
+    tests_run = RunAndExtractTestList(args)[0]
+    self.AssertSetEqual(tests_run, tests_to_run)
+
+  def RunAndVerifyWithSharding(self, gtest_filter, total_shards, tests_to_run,
+                               args=None, check_exit_0=False):
+    """Checks that binary runs correct tests for the given filter and shard.
+
+    Runs all shards of googletest-filter-unittest_ with the given filter, and
+    verifies that the right set of tests were run. The union of tests run
+    on each shard should be identical to tests_to_run, without duplicates.
+    If check_exit_0, .
+
+    Args:
+      gtest_filter: A filter to apply to the tests.
+      total_shards: A total number of shards to split test run into.
+      tests_to_run: A set of tests expected to run.
+      args   :      Arguments to pass to the to the test binary.
+      check_exit_0: When set to a true value, make sure that all shards
+                    return 0.
+    """
+
+    tests_to_run = self.AdjustForParameterizedTests(tests_to_run)
+
+    # Windows removes empty variables from the environment when passing it
+    # to a new process.  This means it is impossible to pass an empty filter
+    # into a process using the environment variable.  However, we can still
+    # test the case when the variable is not supplied (i.e., gtest_filter is
+    # None).
+    # pylint: disable-msg=C6403
+    if CAN_TEST_EMPTY_FILTER or gtest_filter != '':
+      SetEnvVar(FILTER_ENV_VAR, gtest_filter)
+      partition = []
+      for i in range(0, total_shards):
+        (tests_run, exit_code) = RunWithSharding(total_shards, i, args)
+        if check_exit_0:
+          self.assertEqual(0, exit_code)
+        partition.append(tests_run)
+
+      self.AssertPartitionIsValid(tests_to_run, partition)
+      SetEnvVar(FILTER_ENV_VAR, None)
+    # pylint: enable-msg=C6403
+
+  def RunAndVerifyAllowingDisabled(self, gtest_filter, tests_to_run):
+    """Checks that the binary runs correct set of tests for the given filter.
+
+    Runs googletest-filter-unittest_ with the given filter, and enables
+    disabled tests. Verifies that the right set of tests were run.
+
+    Args:
+      gtest_filter: A filter to apply to the tests.
+      tests_to_run: A set of tests expected to run.
+    """
+
+    tests_to_run = self.AdjustForParameterizedTests(tests_to_run)
+
+    # Construct the command line.
+    args = ['--%s' % ALSO_RUN_DISABLED_TESTS_FLAG]
+    if gtest_filter is not None:
+      args.append('--%s=%s' % (FILTER_FLAG, gtest_filter))
+
+    tests_run = RunAndExtractTestList(args)[0]
+    self.AssertSetEqual(tests_run, tests_to_run)
+
+  def setUp(self):
+    """Sets up test case.
+
+    Determines whether value-parameterized tests are enabled in the binary and
+    sets the flags accordingly.
+    """
+
+    global param_tests_present
+    if param_tests_present is None:
+      param_tests_present = PARAM_TEST_REGEX.search(
+          RunAndReturnOutput()) is not None
+
+  def testDefaultBehavior(self):
+    """Tests the behavior of not specifying the filter."""
+
+    self.RunAndVerify(None, ACTIVE_TESTS)
+
+  def testDefaultBehaviorWithShards(self):
+    """Tests the behavior without the filter, with sharding enabled."""
+
+    self.RunAndVerifyWithSharding(None, 1, ACTIVE_TESTS)
+    self.RunAndVerifyWithSharding(None, 2, ACTIVE_TESTS)
+    self.RunAndVerifyWithSharding(None, len(ACTIVE_TESTS) - 1, ACTIVE_TESTS)
+    self.RunAndVerifyWithSharding(None, len(ACTIVE_TESTS), ACTIVE_TESTS)
+    self.RunAndVerifyWithSharding(None, len(ACTIVE_TESTS) + 1, ACTIVE_TESTS)
+
+  def testEmptyFilter(self):
+    """Tests an empty filter."""
+
+    self.RunAndVerify('', [])
+    self.RunAndVerifyWithSharding('', 1, [])
+    self.RunAndVerifyWithSharding('', 2, [])
+
+  def testBadFilter(self):
+    """Tests a filter that matches nothing."""
+
+    self.RunAndVerify('BadFilter', [])
+    self.RunAndVerifyAllowingDisabled('BadFilter', [])
+
+  def testFullName(self):
+    """Tests filtering by full name."""
+
+    self.RunAndVerify('FooTest.Xyz', ['FooTest.Xyz'])
+    self.RunAndVerifyAllowingDisabled('FooTest.Xyz', ['FooTest.Xyz'])
+    self.RunAndVerifyWithSharding('FooTest.Xyz', 5, ['FooTest.Xyz'])
+
+  def testUniversalFilters(self):
+    """Tests filters that match everything."""
+
+    self.RunAndVerify('*', ACTIVE_TESTS)
+    self.RunAndVerify('*.*', ACTIVE_TESTS)
+    self.RunAndVerifyWithSharding('*.*', len(ACTIVE_TESTS) - 3, ACTIVE_TESTS)
+    self.RunAndVerifyAllowingDisabled('*', ACTIVE_TESTS + DISABLED_TESTS)
+    self.RunAndVerifyAllowingDisabled('*.*', ACTIVE_TESTS + DISABLED_TESTS)
+
+  def testFilterByTestCase(self):
+    """Tests filtering by test case name."""
+
+    self.RunAndVerify('FooTest.*', ['FooTest.Abc', 'FooTest.Xyz'])
+
+    BAZ_TESTS = ['BazTest.TestOne', 'BazTest.TestA', 'BazTest.TestB']
+    self.RunAndVerify('BazTest.*', BAZ_TESTS)
+    self.RunAndVerifyAllowingDisabled('BazTest.*',
+                                      BAZ_TESTS + ['BazTest.DISABLED_TestC'])
+
+  def testFilterByTest(self):
+    """Tests filtering by test name."""
+
+    self.RunAndVerify('*.TestOne', ['BarTest.TestOne', 'BazTest.TestOne'])
+
+  def testFilterDisabledTests(self):
+    """Select only the disabled tests to run."""
+
+    self.RunAndVerify('DISABLED_FoobarTest.Test1', [])
+    self.RunAndVerifyAllowingDisabled('DISABLED_FoobarTest.Test1',
+                                      ['DISABLED_FoobarTest.Test1'])
+
+    self.RunAndVerify('*DISABLED_*', [])
+    self.RunAndVerifyAllowingDisabled('*DISABLED_*', DISABLED_TESTS)
+
+    self.RunAndVerify('*.DISABLED_*', [])
+    self.RunAndVerifyAllowingDisabled('*.DISABLED_*', [
+        'BarTest.DISABLED_TestFour',
+        'BarTest.DISABLED_TestFive',
+        'BazTest.DISABLED_TestC',
+        'DISABLED_FoobarTest.DISABLED_Test2',
+        ])
+
+    self.RunAndVerify('DISABLED_*', [])
+    self.RunAndVerifyAllowingDisabled('DISABLED_*', [
+        'DISABLED_FoobarTest.Test1',
+        'DISABLED_FoobarTest.DISABLED_Test2',
+        'DISABLED_FoobarbazTest.TestA',
+        ])
+
+  def testWildcardInTestCaseName(self):
+    """Tests using wildcard in the test case name."""
+
+    self.RunAndVerify('*a*.*', [
+        'BarTest.TestOne',
+        'BarTest.TestTwo',
+        'BarTest.TestThree',
+
+        'BazTest.TestOne',
+        'BazTest.TestA',
+        'BazTest.TestB', ] + DEATH_TESTS + PARAM_TESTS)
+
+  def testWildcardInTestName(self):
+    """Tests using wildcard in the test name."""
+
+    self.RunAndVerify('*.*A*', ['FooTest.Abc', 'BazTest.TestA'])
+
+  def testFilterWithoutDot(self):
+    """Tests a filter that has no '.' in it."""
+
+    self.RunAndVerify('*z*', [
+        'FooTest.Xyz',
+
+        'BazTest.TestOne',
+        'BazTest.TestA',
+        'BazTest.TestB',
+        ])
+
+  def testTwoPatterns(self):
+    """Tests filters that consist of two patterns."""
+
+    self.RunAndVerify('Foo*.*:*A*', [
+        'FooTest.Abc',
+        'FooTest.Xyz',
+
+        'BazTest.TestA',
+        ])
+
+    # An empty pattern + a non-empty one
+    self.RunAndVerify(':*A*', ['FooTest.Abc', 'BazTest.TestA'])
+
+  def testThreePatterns(self):
+    """Tests filters that consist of three patterns."""
+
+    self.RunAndVerify('*oo*:*A*:*One', [
+        'FooTest.Abc',
+        'FooTest.Xyz',
+
+        'BarTest.TestOne',
+
+        'BazTest.TestOne',
+        'BazTest.TestA',
+        ])
+
+    # The 2nd pattern is empty.
+    self.RunAndVerify('*oo*::*One', [
+        'FooTest.Abc',
+        'FooTest.Xyz',
+
+        'BarTest.TestOne',
+
+        'BazTest.TestOne',
+        ])
+
+    # The last 2 patterns are empty.
+    self.RunAndVerify('*oo*::', [
+        'FooTest.Abc',
+        'FooTest.Xyz',
+        ])
+
+  def testNegativeFilters(self):
+    self.RunAndVerify('*-BazTest.TestOne', [
+        'FooTest.Abc',
+        'FooTest.Xyz',
+
+        'BarTest.TestOne',
+        'BarTest.TestTwo',
+        'BarTest.TestThree',
+
+        'BazTest.TestA',
+        'BazTest.TestB',
+        ] + DEATH_TESTS + PARAM_TESTS)
+
+    self.RunAndVerify('*-FooTest.Abc:BazTest.*', [
+        'FooTest.Xyz',
+
+        'BarTest.TestOne',
+        'BarTest.TestTwo',
+        'BarTest.TestThree',
+        ] + DEATH_TESTS + PARAM_TESTS)
+
+    self.RunAndVerify('BarTest.*-BarTest.TestOne', [
+        'BarTest.TestTwo',
+        'BarTest.TestThree',
+        ])
+
+    # Tests without leading '*'.
+    self.RunAndVerify('-FooTest.Abc:FooTest.Xyz:BazTest.*', [
+        'BarTest.TestOne',
+        'BarTest.TestTwo',
+        'BarTest.TestThree',
+        ] + DEATH_TESTS + PARAM_TESTS)
+
+    # Value parameterized tests.
+    self.RunAndVerify('*/*', PARAM_TESTS)
+
+    # Value parameterized tests filtering by the sequence name.
+    self.RunAndVerify('SeqP/*', [
+        'SeqP/ParamTest.TestX/0',
+        'SeqP/ParamTest.TestX/1',
+        'SeqP/ParamTest.TestY/0',
+        'SeqP/ParamTest.TestY/1',
+        ])
+
+    # Value parameterized tests filtering by the test name.
+    self.RunAndVerify('*/0', [
+        'SeqP/ParamTest.TestX/0',
+        'SeqP/ParamTest.TestY/0',
+        'SeqQ/ParamTest.TestX/0',
+        'SeqQ/ParamTest.TestY/0',
+        ])
+
+  def testFlagOverridesEnvVar(self):
+    """Tests that the filter flag overrides the filtering env. variable."""
+
+    SetEnvVar(FILTER_ENV_VAR, 'Foo*')
+    args = ['--%s=%s' % (FILTER_FLAG, '*One')]
+    tests_run = RunAndExtractTestList(args)[0]
+    SetEnvVar(FILTER_ENV_VAR, None)
+
+    self.AssertSetEqual(tests_run, ['BarTest.TestOne', 'BazTest.TestOne'])
+
+  def testShardStatusFileIsCreated(self):
+    """Tests that the shard file is created if specified in the environment."""
+
+    shard_status_file = os.path.join(gtest_test_utils.GetTempDir(),
+                                     'shard_status_file')
+    self.assert_(not os.path.exists(shard_status_file))
+
+    extra_env = {SHARD_STATUS_FILE_ENV_VAR: shard_status_file}
+    try:
+      InvokeWithModifiedEnv(extra_env, RunAndReturnOutput)
+    finally:
+      self.assert_(os.path.exists(shard_status_file))
+      os.remove(shard_status_file)
+
+  def testShardStatusFileIsCreatedWithListTests(self):
+    """Tests that the shard file is created with the "list_tests" flag."""
+
+    shard_status_file = os.path.join(gtest_test_utils.GetTempDir(),
+                                     'shard_status_file2')
+    self.assert_(not os.path.exists(shard_status_file))
+
+    extra_env = {SHARD_STATUS_FILE_ENV_VAR: shard_status_file}
+    try:
+      output = InvokeWithModifiedEnv(extra_env,
+                                     RunAndReturnOutput,
+                                     [LIST_TESTS_FLAG])
+    finally:
+      # This assertion ensures that Google Test enumerated the tests as
+      # opposed to running them.
+      self.assert_('[==========]' not in output,
+                   'Unexpected output during test enumeration.\n'
+                   'Please ensure that LIST_TESTS_FLAG is assigned the\n'
+                   'correct flag value for listing Google Test tests.')
+
+      self.assert_(os.path.exists(shard_status_file))
+      os.remove(shard_status_file)
+
+  if SUPPORTS_DEATH_TESTS:
+    def testShardingWorksWithDeathTests(self):
+      """Tests integration with death tests and sharding."""
+
+      gtest_filter = 'HasDeathTest.*:SeqP/*'
+      expected_tests = [
+          'HasDeathTest.Test1',
+          'HasDeathTest.Test2',
+
+          'SeqP/ParamTest.TestX/0',
+          'SeqP/ParamTest.TestX/1',
+          'SeqP/ParamTest.TestY/0',
+          'SeqP/ParamTest.TestY/1',
+          ]
+
+      for flag in ['--gtest_death_test_style=threadsafe',
+                   '--gtest_death_test_style=fast']:
+        self.RunAndVerifyWithSharding(gtest_filter, 3, expected_tests,
+                                      check_exit_0=True, args=[flag])
+        self.RunAndVerifyWithSharding(gtest_filter, 5, expected_tests,
+                                      check_exit_0=True, args=[flag])
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-filter-unittest_.cc b/build/_deps/googletest-src/googletest/test/googletest-filter-unittest_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d30ec9c78b565d8e8180173d8fc4e8aefad88aea
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-filter-unittest_.cc
@@ -0,0 +1,137 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Unit test for Google Test test filters.
+//
+// A user can specify which test(s) in a Google Test program to run via
+// either the GTEST_FILTER environment variable or the --gtest_filter
+// flag.  This is used for testing such functionality.
+//
+// The program will be invoked from a Python unit test.  Don't run it
+// directly.
+
+#include "gtest/gtest.h"
+
+namespace {
+
+// Test case FooTest.
+
+class FooTest : public testing::Test {
+};
+
+TEST_F(FooTest, Abc) {
+}
+
+TEST_F(FooTest, Xyz) {
+  FAIL() << "Expected failure.";
+}
+
+// Test case BarTest.
+
+TEST(BarTest, TestOne) {
+}
+
+TEST(BarTest, TestTwo) {
+}
+
+TEST(BarTest, TestThree) {
+}
+
+TEST(BarTest, DISABLED_TestFour) {
+  FAIL() << "Expected failure.";
+}
+
+TEST(BarTest, DISABLED_TestFive) {
+  FAIL() << "Expected failure.";
+}
+
+// Test case BazTest.
+
+TEST(BazTest, TestOne) {
+  FAIL() << "Expected failure.";
+}
+
+TEST(BazTest, TestA) {
+}
+
+TEST(BazTest, TestB) {
+}
+
+TEST(BazTest, DISABLED_TestC) {
+  FAIL() << "Expected failure.";
+}
+
+// Test case HasDeathTest
+
+TEST(HasDeathTest, Test1) {
+  EXPECT_DEATH_IF_SUPPORTED(exit(1), ".*");
+}
+
+// We need at least two death tests to make sure that the all death tests
+// aren't on the first shard.
+TEST(HasDeathTest, Test2) {
+  EXPECT_DEATH_IF_SUPPORTED(exit(1), ".*");
+}
+
+// Test case FoobarTest
+
+TEST(DISABLED_FoobarTest, Test1) {
+  FAIL() << "Expected failure.";
+}
+
+TEST(DISABLED_FoobarTest, DISABLED_Test2) {
+  FAIL() << "Expected failure.";
+}
+
+// Test case FoobarbazTest
+
+TEST(DISABLED_FoobarbazTest, TestA) {
+  FAIL() << "Expected failure.";
+}
+
+class ParamTest : public testing::TestWithParam<int> {
+};
+
+TEST_P(ParamTest, TestX) {
+}
+
+TEST_P(ParamTest, TestY) {
+}
+
+INSTANTIATE_TEST_SUITE_P(SeqP, ParamTest, testing::Values(1, 2));
+INSTANTIATE_TEST_SUITE_P(SeqQ, ParamTest, testing::Values(5, 6));
+
+}  // namespace
+
+int main(int argc, char **argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googletest/test/googletest-json-outfiles-test.py b/build/_deps/googletest-src/googletest/test/googletest-json-outfiles-test.py
new file mode 100644
index 0000000000000000000000000000000000000000..8ef47b8f97463c2e3ad44225479d3bc06338792c
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-json-outfiles-test.py
@@ -0,0 +1,191 @@
+#!/usr/bin/env python
+# Copyright 2018, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Unit test for the gtest_json_output module."""
+
+import json
+import os
+import gtest_json_test_utils
+import gtest_test_utils
+
+GTEST_OUTPUT_SUBDIR = 'json_outfiles'
+GTEST_OUTPUT_1_TEST = 'gtest_xml_outfile1_test_'
+GTEST_OUTPUT_2_TEST = 'gtest_xml_outfile2_test_'
+
+EXPECTED_1 = {
+    u'tests':
+        1,
+    u'failures':
+        0,
+    u'disabled':
+        0,
+    u'errors':
+        0,
+    u'time':
+        u'*',
+    u'timestamp':
+        u'*',
+    u'name':
+        u'AllTests',
+    u'testsuites': [{
+        u'name':
+            u'PropertyOne',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'TestSomeProperties',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'PropertyOne',
+            u'SetUpProp': u'1',
+            u'TestSomeProperty': u'1',
+            u'TearDownProp': u'1',
+        }],
+    }],
+}
+
+EXPECTED_2 = {
+    u'tests':
+        1,
+    u'failures':
+        0,
+    u'disabled':
+        0,
+    u'errors':
+        0,
+    u'time':
+        u'*',
+    u'timestamp':
+        u'*',
+    u'name':
+        u'AllTests',
+    u'testsuites': [{
+        u'name':
+            u'PropertyTwo',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'TestSomeProperties',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'timestamp': u'*',
+            u'time': u'*',
+            u'classname': u'PropertyTwo',
+            u'SetUpProp': u'2',
+            u'TestSomeProperty': u'2',
+            u'TearDownProp': u'2',
+        }],
+    }],
+}
+
+
+class GTestJsonOutFilesTest(gtest_test_utils.TestCase):
+  """Unit test for Google Test's JSON output functionality."""
+
+  def setUp(self):
+    # We want the trailing '/' that the last "" provides in os.path.join, for
+    # telling Google Test to create an output directory instead of a single file
+    # for xml output.
+    self.output_dir_ = os.path.join(gtest_test_utils.GetTempDir(),
+                                    GTEST_OUTPUT_SUBDIR, '')
+    self.DeleteFilesAndDir()
+
+  def tearDown(self):
+    self.DeleteFilesAndDir()
+
+  def DeleteFilesAndDir(self):
+    try:
+      os.remove(os.path.join(self.output_dir_, GTEST_OUTPUT_1_TEST + '.json'))
+    except os.error:
+      pass
+    try:
+      os.remove(os.path.join(self.output_dir_, GTEST_OUTPUT_2_TEST + '.json'))
+    except os.error:
+      pass
+    try:
+      os.rmdir(self.output_dir_)
+    except os.error:
+      pass
+
+  def testOutfile1(self):
+    self._TestOutFile(GTEST_OUTPUT_1_TEST, EXPECTED_1)
+
+  def testOutfile2(self):
+    self._TestOutFile(GTEST_OUTPUT_2_TEST, EXPECTED_2)
+
+  def _TestOutFile(self, test_name, expected):
+    gtest_prog_path = gtest_test_utils.GetTestExecutablePath(test_name)
+    command = [gtest_prog_path, '--gtest_output=json:%s' % self.output_dir_]
+    p = gtest_test_utils.Subprocess(command,
+                                    working_dir=gtest_test_utils.GetTempDir())
+    self.assert_(p.exited)
+    self.assertEquals(0, p.exit_code)
+
+    output_file_name1 = test_name + '.json'
+    output_file1 = os.path.join(self.output_dir_, output_file_name1)
+    output_file_name2 = 'lt-' + output_file_name1
+    output_file2 = os.path.join(self.output_dir_, output_file_name2)
+    self.assert_(os.path.isfile(output_file1) or os.path.isfile(output_file2),
+                 output_file1)
+
+    if os.path.isfile(output_file1):
+      with open(output_file1) as f:
+        actual = json.load(f)
+    else:
+      with open(output_file2) as f:
+        actual = json.load(f)
+    self.assertEqual(expected, gtest_json_test_utils.normalize(actual))
+
+
+if __name__ == '__main__':
+  os.environ['GTEST_STACK_TRACE_DEPTH'] = '0'
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-json-output-unittest.py b/build/_deps/googletest-src/googletest/test/googletest-json-output-unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..15861f75cbe83d909e25f605ec0bc12df9db0ea8
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-json-output-unittest.py
@@ -0,0 +1,778 @@
+#!/usr/bin/env python
+# Copyright 2018, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Unit test for the gtest_json_output module."""
+
+import datetime
+import errno
+import json
+import os
+import re
+import sys
+
+import gtest_json_test_utils
+import gtest_test_utils
+
+GTEST_FILTER_FLAG = '--gtest_filter'
+GTEST_LIST_TESTS_FLAG = '--gtest_list_tests'
+GTEST_OUTPUT_FLAG = '--gtest_output'
+GTEST_DEFAULT_OUTPUT_FILE = 'test_detail.json'
+GTEST_PROGRAM_NAME = 'gtest_xml_output_unittest_'
+
+# The flag indicating stacktraces are not supported
+NO_STACKTRACE_SUPPORT_FLAG = '--no_stacktrace_support'
+
+SUPPORTS_STACK_TRACES = NO_STACKTRACE_SUPPORT_FLAG not in sys.argv
+
+if SUPPORTS_STACK_TRACES:
+  STACK_TRACE_TEMPLATE = '\nStack trace:\n*'
+else:
+  STACK_TRACE_TEMPLATE = ''
+
+EXPECTED_NON_EMPTY = {
+    u'tests':
+        24,
+    u'failures':
+        4,
+    u'disabled':
+        2,
+    u'errors':
+        0,
+    u'timestamp':
+        u'*',
+    u'time':
+        u'*',
+    u'ad_hoc_property':
+        u'42',
+    u'name':
+        u'AllTests',
+    u'testsuites': [{
+        u'name':
+            u'SuccessfulTest',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'Succeeds',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'SuccessfulTest'
+        }]
+    }, {
+        u'name':
+            u'FailedTest',
+        u'tests':
+            1,
+        u'failures':
+            1,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name':
+                u'Fails',
+            u'status':
+                u'RUN',
+            u'result':
+                u'COMPLETED',
+            u'time':
+                u'*',
+            u'timestamp':
+                u'*',
+            u'classname':
+                u'FailedTest',
+            u'failures': [{
+                u'failure': u'gtest_xml_output_unittest_.cc:*\n'
+                            u'Expected equality of these values:\n'
+                            u'  1\n  2' + STACK_TRACE_TEMPLATE,
+                u'type': u''
+            }]
+        }]
+    }, {
+        u'name':
+            u'DisabledTest',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            1,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'DISABLED_test_not_run',
+            u'status': u'NOTRUN',
+            u'result': u'SUPPRESSED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'DisabledTest'
+        }]
+    }, {
+        u'name':
+            u'SkippedTest',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'Skipped',
+            u'status': u'RUN',
+            u'result': u'SKIPPED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'SkippedTest'
+        }]
+    }, {
+        u'name':
+            u'MixedResultTest',
+        u'tests':
+            3,
+        u'failures':
+            1,
+        u'disabled':
+            1,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'Succeeds',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'MixedResultTest'
+        }, {
+            u'name':
+                u'Fails',
+            u'status':
+                u'RUN',
+            u'result':
+                u'COMPLETED',
+            u'time':
+                u'*',
+            u'timestamp':
+                u'*',
+            u'classname':
+                u'MixedResultTest',
+            u'failures': [{
+                u'failure': u'gtest_xml_output_unittest_.cc:*\n'
+                            u'Expected equality of these values:\n'
+                            u'  1\n  2' + STACK_TRACE_TEMPLATE,
+                u'type': u''
+            }, {
+                u'failure': u'gtest_xml_output_unittest_.cc:*\n'
+                            u'Expected equality of these values:\n'
+                            u'  2\n  3' + STACK_TRACE_TEMPLATE,
+                u'type': u''
+            }]
+        }, {
+            u'name': u'DISABLED_test',
+            u'status': u'NOTRUN',
+            u'result': u'SUPPRESSED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'MixedResultTest'
+        }]
+    }, {
+        u'name':
+            u'XmlQuotingTest',
+        u'tests':
+            1,
+        u'failures':
+            1,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name':
+                u'OutputsCData',
+            u'status':
+                u'RUN',
+            u'result':
+                u'COMPLETED',
+            u'time':
+                u'*',
+            u'timestamp':
+                u'*',
+            u'classname':
+                u'XmlQuotingTest',
+            u'failures': [{
+                u'failure': u'gtest_xml_output_unittest_.cc:*\n'
+                            u'Failed\nXML output: <?xml encoding="utf-8">'
+                            u'<top><![CDATA[cdata text]]></top>' +
+                            STACK_TRACE_TEMPLATE,
+                u'type': u''
+            }]
+        }]
+    }, {
+        u'name':
+            u'InvalidCharactersTest',
+        u'tests':
+            1,
+        u'failures':
+            1,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name':
+                u'InvalidCharactersInMessage',
+            u'status':
+                u'RUN',
+            u'result':
+                u'COMPLETED',
+            u'time':
+                u'*',
+            u'timestamp':
+                u'*',
+            u'classname':
+                u'InvalidCharactersTest',
+            u'failures': [{
+                u'failure': u'gtest_xml_output_unittest_.cc:*\n'
+                            u'Failed\nInvalid characters in brackets'
+                            u' [\x01\x02]' + STACK_TRACE_TEMPLATE,
+                u'type': u''
+            }]
+        }]
+    }, {
+        u'name':
+            u'PropertyRecordingTest',
+        u'tests':
+            4,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'SetUpTestSuite':
+            u'yes',
+        u'TearDownTestSuite':
+            u'aye',
+        u'testsuite': [{
+            u'name': u'OneProperty',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'PropertyRecordingTest',
+            u'key_1': u'1'
+        }, {
+            u'name': u'IntValuedProperty',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'PropertyRecordingTest',
+            u'key_int': u'1'
+        }, {
+            u'name': u'ThreeProperties',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'PropertyRecordingTest',
+            u'key_1': u'1',
+            u'key_2': u'2',
+            u'key_3': u'3'
+        }, {
+            u'name': u'TwoValuesForOneKeyUsesLastValue',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'PropertyRecordingTest',
+            u'key_1': u'2'
+        }]
+    }, {
+        u'name':
+            u'NoFixtureTest',
+        u'tests':
+            3,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'RecordProperty',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'NoFixtureTest',
+            u'key': u'1'
+        }, {
+            u'name': u'ExternalUtilityThatCallsRecordIntValuedProperty',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'NoFixtureTest',
+            u'key_for_utility_int': u'1'
+        }, {
+            u'name': u'ExternalUtilityThatCallsRecordStringValuedProperty',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'NoFixtureTest',
+            u'key_for_utility_string': u'1'
+        }]
+    }, {
+        u'name':
+            u'TypedTest/0',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'HasTypeParamAttribute',
+            u'type_param': u'int',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'TypedTest/0'
+        }]
+    }, {
+        u'name':
+            u'TypedTest/1',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'HasTypeParamAttribute',
+            u'type_param': u'long',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'TypedTest/1'
+        }]
+    }, {
+        u'name':
+            u'Single/TypeParameterizedTestSuite/0',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'HasTypeParamAttribute',
+            u'type_param': u'int',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'Single/TypeParameterizedTestSuite/0'
+        }]
+    }, {
+        u'name':
+            u'Single/TypeParameterizedTestSuite/1',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'HasTypeParamAttribute',
+            u'type_param': u'long',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'Single/TypeParameterizedTestSuite/1'
+        }]
+    }, {
+        u'name':
+            u'Single/ValueParamTest',
+        u'tests':
+            4,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'HasValueParamAttribute/0',
+            u'value_param': u'33',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'Single/ValueParamTest'
+        }, {
+            u'name': u'HasValueParamAttribute/1',
+            u'value_param': u'42',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'Single/ValueParamTest'
+        }, {
+            u'name': u'AnotherTestThatHasValueParamAttribute/0',
+            u'value_param': u'33',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'Single/ValueParamTest'
+        }, {
+            u'name': u'AnotherTestThatHasValueParamAttribute/1',
+            u'value_param': u'42',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'Single/ValueParamTest'
+        }]
+    }]
+}
+
+EXPECTED_FILTERED = {
+    u'tests':
+        1,
+    u'failures':
+        0,
+    u'disabled':
+        0,
+    u'errors':
+        0,
+    u'time':
+        u'*',
+    u'timestamp':
+        u'*',
+    u'name':
+        u'AllTests',
+    u'ad_hoc_property':
+        u'42',
+    u'testsuites': [{
+        u'name':
+            u'SuccessfulTest',
+        u'tests':
+            1,
+        u'failures':
+            0,
+        u'disabled':
+            0,
+        u'errors':
+            0,
+        u'time':
+            u'*',
+        u'timestamp':
+            u'*',
+        u'testsuite': [{
+            u'name': u'Succeeds',
+            u'status': u'RUN',
+            u'result': u'COMPLETED',
+            u'time': u'*',
+            u'timestamp': u'*',
+            u'classname': u'SuccessfulTest',
+        }]
+    }],
+}
+
+EXPECTED_EMPTY = {
+    u'tests': 0,
+    u'failures': 0,
+    u'disabled': 0,
+    u'errors': 0,
+    u'time': u'*',
+    u'timestamp': u'*',
+    u'name': u'AllTests',
+    u'testsuites': [],
+}
+
+GTEST_PROGRAM_PATH = gtest_test_utils.GetTestExecutablePath(GTEST_PROGRAM_NAME)
+
+SUPPORTS_TYPED_TESTS = 'TypedTest' in gtest_test_utils.Subprocess(
+    [GTEST_PROGRAM_PATH, GTEST_LIST_TESTS_FLAG], capture_stderr=False).output
+
+
+class GTestJsonOutputUnitTest(gtest_test_utils.TestCase):
+  """Unit test for Google Test's JSON output functionality.
+  """
+
+  # This test currently breaks on platforms that do not support typed and
+  # type-parameterized tests, so we don't run it under them.
+  if SUPPORTS_TYPED_TESTS:
+
+    def testNonEmptyJsonOutput(self):
+      """Verifies JSON output for a Google Test binary with non-empty output.
+
+      Runs a test program that generates a non-empty JSON output, and
+      tests that the JSON output is expected.
+      """
+      self._TestJsonOutput(GTEST_PROGRAM_NAME, EXPECTED_NON_EMPTY, 1)
+
+  def testEmptyJsonOutput(self):
+    """Verifies JSON output for a Google Test binary without actual tests.
+
+    Runs a test program that generates an empty JSON output, and
+    tests that the JSON output is expected.
+    """
+
+    self._TestJsonOutput('gtest_no_test_unittest', EXPECTED_EMPTY, 0)
+
+  def testTimestampValue(self):
+    """Checks whether the timestamp attribute in the JSON output is valid.
+
+    Runs a test program that generates an empty JSON output, and checks if
+    the timestamp attribute in the testsuites tag is valid.
+    """
+    actual = self._GetJsonOutput('gtest_no_test_unittest', [], 0)
+    date_time_str = actual['timestamp']
+    # datetime.strptime() is only available in Python 2.5+ so we have to
+    # parse the expected datetime manually.
+    match = re.match(r'(\d+)-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)', date_time_str)
+    self.assertTrue(
+        re.match,
+        'JSON datettime string %s has incorrect format' % date_time_str)
+    date_time_from_json = datetime.datetime(
+        year=int(match.group(1)), month=int(match.group(2)),
+        day=int(match.group(3)), hour=int(match.group(4)),
+        minute=int(match.group(5)), second=int(match.group(6)))
+
+    time_delta = abs(datetime.datetime.now() - date_time_from_json)
+    # timestamp value should be near the current local time
+    self.assertTrue(time_delta < datetime.timedelta(seconds=600),
+                    'time_delta is %s' % time_delta)
+
+  def testDefaultOutputFile(self):
+    """Verifies the default output file name.
+
+    Confirms that Google Test produces an JSON output file with the expected
+    default name if no name is explicitly specified.
+    """
+    output_file = os.path.join(gtest_test_utils.GetTempDir(),
+                               GTEST_DEFAULT_OUTPUT_FILE)
+    gtest_prog_path = gtest_test_utils.GetTestExecutablePath(
+        'gtest_no_test_unittest')
+    try:
+      os.remove(output_file)
+    except OSError:
+      e = sys.exc_info()[1]
+      if e.errno != errno.ENOENT:
+        raise
+
+    p = gtest_test_utils.Subprocess(
+        [gtest_prog_path, '%s=json' % GTEST_OUTPUT_FLAG],
+        working_dir=gtest_test_utils.GetTempDir())
+    self.assert_(p.exited)
+    self.assertEquals(0, p.exit_code)
+    self.assert_(os.path.isfile(output_file))
+
+  def testSuppressedJsonOutput(self):
+    """Verifies that no JSON output is generated.
+
+    Tests that no JSON file is generated if the default JSON listener is
+    shut down before RUN_ALL_TESTS is invoked.
+    """
+
+    json_path = os.path.join(gtest_test_utils.GetTempDir(),
+                             GTEST_PROGRAM_NAME + 'out.json')
+    if os.path.isfile(json_path):
+      os.remove(json_path)
+
+    command = [GTEST_PROGRAM_PATH,
+               '%s=json:%s' % (GTEST_OUTPUT_FLAG, json_path),
+               '--shut_down_xml']
+    p = gtest_test_utils.Subprocess(command)
+    if p.terminated_by_signal:
+      # p.signal is available only if p.terminated_by_signal is True.
+      self.assertFalse(
+          p.terminated_by_signal,
+          '%s was killed by signal %d' % (GTEST_PROGRAM_NAME, p.signal))
+    else:
+      self.assert_(p.exited)
+      self.assertEquals(1, p.exit_code,
+                        "'%s' exited with code %s, which doesn't match "
+                        'the expected exit code %s.'
+                        % (command, p.exit_code, 1))
+
+    self.assert_(not os.path.isfile(json_path))
+
+  def testFilteredTestJsonOutput(self):
+    """Verifies JSON output when a filter is applied.
+
+    Runs a test program that executes only some tests and verifies that
+    non-selected tests do not show up in the JSON output.
+    """
+
+    self._TestJsonOutput(GTEST_PROGRAM_NAME, EXPECTED_FILTERED, 0,
+                         extra_args=['%s=SuccessfulTest.*' % GTEST_FILTER_FLAG])
+
+  def _GetJsonOutput(self, gtest_prog_name, extra_args, expected_exit_code):
+    """Returns the JSON output generated by running the program gtest_prog_name.
+
+    Furthermore, the program's exit code must be expected_exit_code.
+
+    Args:
+      gtest_prog_name: Google Test binary name.
+      extra_args: extra arguments to binary invocation.
+      expected_exit_code: program's exit code.
+    """
+    json_path = os.path.join(gtest_test_utils.GetTempDir(),
+                             gtest_prog_name + 'out.json')
+    gtest_prog_path = gtest_test_utils.GetTestExecutablePath(gtest_prog_name)
+
+    command = (
+        [gtest_prog_path, '%s=json:%s' % (GTEST_OUTPUT_FLAG, json_path)] +
+        extra_args
+    )
+    p = gtest_test_utils.Subprocess(command)
+    if p.terminated_by_signal:
+      self.assert_(False,
+                   '%s was killed by signal %d' % (gtest_prog_name, p.signal))
+    else:
+      self.assert_(p.exited)
+      self.assertEquals(expected_exit_code, p.exit_code,
+                        "'%s' exited with code %s, which doesn't match "
+                        'the expected exit code %s.'
+                        % (command, p.exit_code, expected_exit_code))
+    with open(json_path) as f:
+      actual = json.load(f)
+    return actual
+
+  def _TestJsonOutput(self, gtest_prog_name, expected,
+                      expected_exit_code, extra_args=None):
+    """Checks the JSON output generated by the Google Test binary.
+
+    Asserts that the JSON document generated by running the program
+    gtest_prog_name matches expected_json, a string containing another
+    JSON document.  Furthermore, the program's exit code must be
+    expected_exit_code.
+
+    Args:
+      gtest_prog_name: Google Test binary name.
+      expected: expected output.
+      expected_exit_code: program's exit code.
+      extra_args: extra arguments to binary invocation.
+    """
+
+    actual = self._GetJsonOutput(gtest_prog_name, extra_args or [],
+                                 expected_exit_code)
+    self.assertEqual(expected, gtest_json_test_utils.normalize(actual))
+
+
+if __name__ == '__main__':
+  if NO_STACKTRACE_SUPPORT_FLAG in sys.argv:
+    # unittest.main() can't handle unknown flags
+    sys.argv.remove(NO_STACKTRACE_SUPPORT_FLAG)
+
+  os.environ['GTEST_STACK_TRACE_DEPTH'] = '1'
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-list-tests-unittest.py b/build/_deps/googletest-src/googletest/test/googletest-list-tests-unittest.py
new file mode 100755
index 0000000000000000000000000000000000000000..81423a339e8fd28aa2b4253013b3c23ce3533749
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-list-tests-unittest.py
@@ -0,0 +1,205 @@
+#!/usr/bin/env python
+#
+# Copyright 2006, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Unit test for Google Test's --gtest_list_tests flag.
+
+A user can ask Google Test to list all tests by specifying the
+--gtest_list_tests flag.  This script tests such functionality
+by invoking googletest-list-tests-unittest_ (a program written with
+Google Test) the command line flags.
+"""
+
+import re
+import gtest_test_utils
+
+# Constants.
+
+# The command line flag for enabling/disabling listing all tests.
+LIST_TESTS_FLAG = 'gtest_list_tests'
+
+# Path to the googletest-list-tests-unittest_ program.
+EXE_PATH = gtest_test_utils.GetTestExecutablePath('googletest-list-tests-unittest_')
+
+# The expected output when running googletest-list-tests-unittest_ with
+# --gtest_list_tests
+EXPECTED_OUTPUT_NO_FILTER_RE = re.compile(r"""FooDeathTest\.
+  Test1
+Foo\.
+  Bar1
+  Bar2
+  DISABLED_Bar3
+Abc\.
+  Xyz
+  Def
+FooBar\.
+  Baz
+FooTest\.
+  Test1
+  DISABLED_Test2
+  Test3
+TypedTest/0\.  # TypeParam = (VeryLo{245}|class VeryLo{239})\.\.\.
+  TestA
+  TestB
+TypedTest/1\.  # TypeParam = int\s*\*( __ptr64)?
+  TestA
+  TestB
+TypedTest/2\.  # TypeParam = .*MyArray<bool,\s*42>
+  TestA
+  TestB
+My/TypeParamTest/0\.  # TypeParam = (VeryLo{245}|class VeryLo{239})\.\.\.
+  TestA
+  TestB
+My/TypeParamTest/1\.  # TypeParam = int\s*\*( __ptr64)?
+  TestA
+  TestB
+My/TypeParamTest/2\.  # TypeParam = .*MyArray<bool,\s*42>
+  TestA
+  TestB
+MyInstantiation/ValueParamTest\.
+  TestA/0  # GetParam\(\) = one line
+  TestA/1  # GetParam\(\) = two\\nlines
+  TestA/2  # GetParam\(\) = a very\\nlo{241}\.\.\.
+  TestB/0  # GetParam\(\) = one line
+  TestB/1  # GetParam\(\) = two\\nlines
+  TestB/2  # GetParam\(\) = a very\\nlo{241}\.\.\.
+""")
+
+# The expected output when running googletest-list-tests-unittest_ with
+# --gtest_list_tests and --gtest_filter=Foo*.
+EXPECTED_OUTPUT_FILTER_FOO_RE = re.compile(r"""FooDeathTest\.
+  Test1
+Foo\.
+  Bar1
+  Bar2
+  DISABLED_Bar3
+FooBar\.
+  Baz
+FooTest\.
+  Test1
+  DISABLED_Test2
+  Test3
+""")
+
+# Utilities.
+
+
+def Run(args):
+  """Runs googletest-list-tests-unittest_ and returns the list of tests printed."""
+
+  return gtest_test_utils.Subprocess([EXE_PATH] + args,
+                                     capture_stderr=False).output
+
+
+# The unit test.
+
+
+class GTestListTestsUnitTest(gtest_test_utils.TestCase):
+  """Tests using the --gtest_list_tests flag to list all tests."""
+
+  def RunAndVerify(self, flag_value, expected_output_re, other_flag):
+    """Runs googletest-list-tests-unittest_ and verifies that it prints
+    the correct tests.
+
+    Args:
+      flag_value:         value of the --gtest_list_tests flag;
+                          None if the flag should not be present.
+      expected_output_re: regular expression that matches the expected
+                          output after running command;
+      other_flag:         a different flag to be passed to command
+                          along with gtest_list_tests;
+                          None if the flag should not be present.
+    """
+
+    if flag_value is None:
+      flag = ''
+      flag_expression = 'not set'
+    elif flag_value == '0':
+      flag = '--%s=0' % LIST_TESTS_FLAG
+      flag_expression = '0'
+    else:
+      flag = '--%s' % LIST_TESTS_FLAG
+      flag_expression = '1'
+
+    args = [flag]
+
+    if other_flag is not None:
+      args += [other_flag]
+
+    output = Run(args)
+
+    if expected_output_re:
+      self.assert_(
+          expected_output_re.match(output),
+          ('when %s is %s, the output of "%s" is "%s",\n'
+           'which does not match regex "%s"' %
+           (LIST_TESTS_FLAG, flag_expression, ' '.join(args), output,
+            expected_output_re.pattern)))
+    else:
+      self.assert_(
+          not EXPECTED_OUTPUT_NO_FILTER_RE.match(output),
+          ('when %s is %s, the output of "%s" is "%s"'%
+           (LIST_TESTS_FLAG, flag_expression, ' '.join(args), output)))
+
+  def testDefaultBehavior(self):
+    """Tests the behavior of the default mode."""
+
+    self.RunAndVerify(flag_value=None,
+                      expected_output_re=None,
+                      other_flag=None)
+
+  def testFlag(self):
+    """Tests using the --gtest_list_tests flag."""
+
+    self.RunAndVerify(flag_value='0',
+                      expected_output_re=None,
+                      other_flag=None)
+    self.RunAndVerify(flag_value='1',
+                      expected_output_re=EXPECTED_OUTPUT_NO_FILTER_RE,
+                      other_flag=None)
+
+  def testOverrideNonFilterFlags(self):
+    """Tests that --gtest_list_tests overrides the non-filter flags."""
+
+    self.RunAndVerify(flag_value='1',
+                      expected_output_re=EXPECTED_OUTPUT_NO_FILTER_RE,
+                      other_flag='--gtest_break_on_failure')
+
+  def testWithFilterFlags(self):
+    """Tests that --gtest_list_tests takes into account the
+    --gtest_filter flag."""
+
+    self.RunAndVerify(flag_value='1',
+                      expected_output_re=EXPECTED_OUTPUT_FILTER_FOO_RE,
+                      other_flag='--gtest_filter=Foo*')
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-list-tests-unittest_.cc b/build/_deps/googletest-src/googletest/test/googletest-list-tests-unittest_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..493c6f00464a90d635d8df096bffec5173e6e44d
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-list-tests-unittest_.cc
@@ -0,0 +1,156 @@
+// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Unit test for Google Test's --gtest_list_tests flag.
+//
+// A user can ask Google Test to list all tests that will run
+// so that when using a filter, a user will know what
+// tests to look for. The tests will not be run after listing.
+//
+// This program will be invoked from a Python unit test.
+// Don't run it directly.
+
+#include "gtest/gtest.h"
+
+// Several different test cases and tests that will be listed.
+TEST(Foo, Bar1) {
+}
+
+TEST(Foo, Bar2) {
+}
+
+TEST(Foo, DISABLED_Bar3) {
+}
+
+TEST(Abc, Xyz) {
+}
+
+TEST(Abc, Def) {
+}
+
+TEST(FooBar, Baz) {
+}
+
+class FooTest : public testing::Test {
+};
+
+TEST_F(FooTest, Test1) {
+}
+
+TEST_F(FooTest, DISABLED_Test2) {
+}
+
+TEST_F(FooTest, Test3) {
+}
+
+TEST(FooDeathTest, Test1) {
+}
+
+// A group of value-parameterized tests.
+
+class MyType {
+ public:
+  explicit MyType(const std::string& a_value) : value_(a_value) {}
+
+  const std::string& value() const { return value_; }
+
+ private:
+  std::string value_;
+};
+
+// Teaches Google Test how to print a MyType.
+void PrintTo(const MyType& x, std::ostream* os) {
+  *os << x.value();
+}
+
+class ValueParamTest : public testing::TestWithParam<MyType> {
+};
+
+TEST_P(ValueParamTest, TestA) {
+}
+
+TEST_P(ValueParamTest, TestB) {
+}
+
+INSTANTIATE_TEST_SUITE_P(
+    MyInstantiation, ValueParamTest,
+    testing::Values(MyType("one line"),
+                    MyType("two\nlines"),
+                    MyType("a very\nloooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong line")));  // NOLINT
+
+// A group of typed tests.
+
+// A deliberately long type name for testing the line-truncating
+// behavior when printing a type parameter.
+class VeryLoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooogName {  // NOLINT
+};
+
+template <typename T>
+class TypedTest : public testing::Test {
+};
+
+template <typename T, int kSize>
+class MyArray {
+};
+
+typedef testing::Types<VeryLoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooogName,  // NOLINT
+                       int*, MyArray<bool, 42> > MyTypes;
+
+TYPED_TEST_SUITE(TypedTest, MyTypes);
+
+TYPED_TEST(TypedTest, TestA) {
+}
+
+TYPED_TEST(TypedTest, TestB) {
+}
+
+// A group of type-parameterized tests.
+
+template <typename T>
+class TypeParamTest : public testing::Test {
+};
+
+TYPED_TEST_SUITE_P(TypeParamTest);
+
+TYPED_TEST_P(TypeParamTest, TestA) {
+}
+
+TYPED_TEST_P(TypeParamTest, TestB) {
+}
+
+REGISTER_TYPED_TEST_SUITE_P(TypeParamTest, TestA, TestB);
+
+INSTANTIATE_TYPED_TEST_SUITE_P(My, TypeParamTest, MyTypes);
+
+int main(int argc, char **argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googletest/test/googletest-listener-test.cc b/build/_deps/googletest-src/googletest/test/googletest-listener-test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..10457afe39a7dbd1fa0f733928678728dcd1b955
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-listener-test.cc
@@ -0,0 +1,518 @@
+// Copyright 2009 Google Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This file verifies Google Test event listeners receive events at the
+// right times.
+
+#include <vector>
+
+#include "gtest/gtest.h"
+#include "gtest/internal/custom/gtest.h"
+
+using ::testing::AddGlobalTestEnvironment;
+using ::testing::Environment;
+using ::testing::InitGoogleTest;
+using ::testing::Test;
+using ::testing::TestSuite;
+using ::testing::TestEventListener;
+using ::testing::TestInfo;
+using ::testing::TestPartResult;
+using ::testing::UnitTest;
+
+// Used by tests to register their events.
+std::vector<std::string>* g_events = nullptr;
+
+namespace testing {
+namespace internal {
+
+class EventRecordingListener : public TestEventListener {
+ public:
+  explicit EventRecordingListener(const char* name) : name_(name) {}
+
+ protected:
+  void OnTestProgramStart(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnTestProgramStart"));
+  }
+
+  void OnTestIterationStart(const UnitTest& /*unit_test*/,
+                            int iteration) override {
+    Message message;
+    message << GetFullMethodName("OnTestIterationStart")
+            << "(" << iteration << ")";
+    g_events->push_back(message.GetString());
+  }
+
+  void OnEnvironmentsSetUpStart(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsSetUpStart"));
+  }
+
+  void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsSetUpEnd"));
+  }
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseStart(const TestCase& /*test_case*/) override {
+    g_events->push_back(GetFullMethodName("OnTestCaseStart"));
+  }
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  void OnTestStart(const TestInfo& /*test_info*/) override {
+    g_events->push_back(GetFullMethodName("OnTestStart"));
+  }
+
+  void OnTestPartResult(const TestPartResult& /*test_part_result*/) override {
+    g_events->push_back(GetFullMethodName("OnTestPartResult"));
+  }
+
+  void OnTestEnd(const TestInfo& /*test_info*/) override {
+    g_events->push_back(GetFullMethodName("OnTestEnd"));
+  }
+
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+  void OnTestCaseEnd(const TestCase& /*test_case*/) override {
+    g_events->push_back(GetFullMethodName("OnTestCaseEnd"));
+  }
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  void OnEnvironmentsTearDownStart(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsTearDownStart"));
+  }
+
+  void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsTearDownEnd"));
+  }
+
+  void OnTestIterationEnd(const UnitTest& /*unit_test*/,
+                          int iteration) override {
+    Message message;
+    message << GetFullMethodName("OnTestIterationEnd")
+            << "("  << iteration << ")";
+    g_events->push_back(message.GetString());
+  }
+
+  void OnTestProgramEnd(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnTestProgramEnd"));
+  }
+
+ private:
+  std::string GetFullMethodName(const char* name) {
+    return name_ + "." + name;
+  }
+
+  std::string name_;
+};
+
+// This listener is using OnTestSuiteStart, OnTestSuiteEnd API
+class EventRecordingListener2 : public TestEventListener {
+ public:
+  explicit EventRecordingListener2(const char* name) : name_(name) {}
+
+ protected:
+  void OnTestProgramStart(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnTestProgramStart"));
+  }
+
+  void OnTestIterationStart(const UnitTest& /*unit_test*/,
+                            int iteration) override {
+    Message message;
+    message << GetFullMethodName("OnTestIterationStart") << "(" << iteration
+            << ")";
+    g_events->push_back(message.GetString());
+  }
+
+  void OnEnvironmentsSetUpStart(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsSetUpStart"));
+  }
+
+  void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsSetUpEnd"));
+  }
+
+  void OnTestSuiteStart(const TestSuite& /*test_suite*/) override {
+    g_events->push_back(GetFullMethodName("OnTestSuiteStart"));
+  }
+
+  void OnTestStart(const TestInfo& /*test_info*/) override {
+    g_events->push_back(GetFullMethodName("OnTestStart"));
+  }
+
+  void OnTestPartResult(const TestPartResult& /*test_part_result*/) override {
+    g_events->push_back(GetFullMethodName("OnTestPartResult"));
+  }
+
+  void OnTestEnd(const TestInfo& /*test_info*/) override {
+    g_events->push_back(GetFullMethodName("OnTestEnd"));
+  }
+
+  void OnTestSuiteEnd(const TestSuite& /*test_suite*/) override {
+    g_events->push_back(GetFullMethodName("OnTestSuiteEnd"));
+  }
+
+  void OnEnvironmentsTearDownStart(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsTearDownStart"));
+  }
+
+  void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnEnvironmentsTearDownEnd"));
+  }
+
+  void OnTestIterationEnd(const UnitTest& /*unit_test*/,
+                          int iteration) override {
+    Message message;
+    message << GetFullMethodName("OnTestIterationEnd") << "(" << iteration
+            << ")";
+    g_events->push_back(message.GetString());
+  }
+
+  void OnTestProgramEnd(const UnitTest& /*unit_test*/) override {
+    g_events->push_back(GetFullMethodName("OnTestProgramEnd"));
+  }
+
+ private:
+  std::string GetFullMethodName(const char* name) { return name_ + "." + name; }
+
+  std::string name_;
+};
+
+class EnvironmentInvocationCatcher : public Environment {
+ protected:
+  void SetUp() override { g_events->push_back("Environment::SetUp"); }
+
+  void TearDown() override { g_events->push_back("Environment::TearDown"); }
+};
+
+class ListenerTest : public Test {
+ protected:
+  static void SetUpTestSuite() {
+    g_events->push_back("ListenerTest::SetUpTestSuite");
+  }
+
+  static void TearDownTestSuite() {
+    g_events->push_back("ListenerTest::TearDownTestSuite");
+  }
+
+  void SetUp() override { g_events->push_back("ListenerTest::SetUp"); }
+
+  void TearDown() override { g_events->push_back("ListenerTest::TearDown"); }
+};
+
+TEST_F(ListenerTest, DoesFoo) {
+  // Test execution order within a test case is not guaranteed so we are not
+  // recording the test name.
+  g_events->push_back("ListenerTest::* Test Body");
+  SUCCEED();  // Triggers OnTestPartResult.
+}
+
+TEST_F(ListenerTest, DoesBar) {
+  g_events->push_back("ListenerTest::* Test Body");
+  SUCCEED();  // Triggers OnTestPartResult.
+}
+
+}  // namespace internal
+
+}  // namespace testing
+
+using ::testing::internal::EnvironmentInvocationCatcher;
+using ::testing::internal::EventRecordingListener;
+using ::testing::internal::EventRecordingListener2;
+
+void VerifyResults(const std::vector<std::string>& data,
+                   const char* const* expected_data,
+                   size_t expected_data_size) {
+  const size_t actual_size = data.size();
+  // If the following assertion fails, a new entry will be appended to
+  // data.  Hence we save data.size() first.
+  EXPECT_EQ(expected_data_size, actual_size);
+
+  // Compares the common prefix.
+  const size_t shorter_size = expected_data_size <= actual_size ?
+      expected_data_size : actual_size;
+  size_t i = 0;
+  for (; i < shorter_size; ++i) {
+    ASSERT_STREQ(expected_data[i], data[i].c_str())
+        << "at position " << i;
+  }
+
+  // Prints extra elements in the actual data.
+  for (; i < actual_size; ++i) {
+    printf("  Actual event #%lu: %s\n",
+        static_cast<unsigned long>(i), data[i].c_str());
+  }
+}
+
+int main(int argc, char **argv) {
+  std::vector<std::string> events;
+  g_events = &events;
+  InitGoogleTest(&argc, argv);
+
+  UnitTest::GetInstance()->listeners().Append(
+      new EventRecordingListener("1st"));
+  UnitTest::GetInstance()->listeners().Append(
+      new EventRecordingListener("2nd"));
+  UnitTest::GetInstance()->listeners().Append(
+      new EventRecordingListener2("3rd"));
+
+  AddGlobalTestEnvironment(new EnvironmentInvocationCatcher);
+
+  GTEST_CHECK_(events.size() == 0)
+      << "AddGlobalTestEnvironment should not generate any events itself.";
+
+  ::testing::GTEST_FLAG(repeat) = 2;
+  int ret_val = RUN_ALL_TESTS();
+
+#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  // The deprecated OnTestSuiteStart/OnTestCaseStart events are included
+  const char* const expected_events[] = {"1st.OnTestProgramStart",
+                                         "2nd.OnTestProgramStart",
+                                         "3rd.OnTestProgramStart",
+                                         "1st.OnTestIterationStart(0)",
+                                         "2nd.OnTestIterationStart(0)",
+                                         "3rd.OnTestIterationStart(0)",
+                                         "1st.OnEnvironmentsSetUpStart",
+                                         "2nd.OnEnvironmentsSetUpStart",
+                                         "3rd.OnEnvironmentsSetUpStart",
+                                         "Environment::SetUp",
+                                         "3rd.OnEnvironmentsSetUpEnd",
+                                         "2nd.OnEnvironmentsSetUpEnd",
+                                         "1st.OnEnvironmentsSetUpEnd",
+                                         "3rd.OnTestSuiteStart",
+                                         "1st.OnTestCaseStart",
+                                         "2nd.OnTestCaseStart",
+                                         "ListenerTest::SetUpTestSuite",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "ListenerTest::TearDownTestSuite",
+                                         "3rd.OnTestSuiteEnd",
+                                         "2nd.OnTestCaseEnd",
+                                         "1st.OnTestCaseEnd",
+                                         "1st.OnEnvironmentsTearDownStart",
+                                         "2nd.OnEnvironmentsTearDownStart",
+                                         "3rd.OnEnvironmentsTearDownStart",
+                                         "Environment::TearDown",
+                                         "3rd.OnEnvironmentsTearDownEnd",
+                                         "2nd.OnEnvironmentsTearDownEnd",
+                                         "1st.OnEnvironmentsTearDownEnd",
+                                         "3rd.OnTestIterationEnd(0)",
+                                         "2nd.OnTestIterationEnd(0)",
+                                         "1st.OnTestIterationEnd(0)",
+                                         "1st.OnTestIterationStart(1)",
+                                         "2nd.OnTestIterationStart(1)",
+                                         "3rd.OnTestIterationStart(1)",
+                                         "1st.OnEnvironmentsSetUpStart",
+                                         "2nd.OnEnvironmentsSetUpStart",
+                                         "3rd.OnEnvironmentsSetUpStart",
+                                         "Environment::SetUp",
+                                         "3rd.OnEnvironmentsSetUpEnd",
+                                         "2nd.OnEnvironmentsSetUpEnd",
+                                         "1st.OnEnvironmentsSetUpEnd",
+                                         "3rd.OnTestSuiteStart",
+                                         "1st.OnTestCaseStart",
+                                         "2nd.OnTestCaseStart",
+                                         "ListenerTest::SetUpTestSuite",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "ListenerTest::TearDownTestSuite",
+                                         "3rd.OnTestSuiteEnd",
+                                         "2nd.OnTestCaseEnd",
+                                         "1st.OnTestCaseEnd",
+                                         "1st.OnEnvironmentsTearDownStart",
+                                         "2nd.OnEnvironmentsTearDownStart",
+                                         "3rd.OnEnvironmentsTearDownStart",
+                                         "Environment::TearDown",
+                                         "3rd.OnEnvironmentsTearDownEnd",
+                                         "2nd.OnEnvironmentsTearDownEnd",
+                                         "1st.OnEnvironmentsTearDownEnd",
+                                         "3rd.OnTestIterationEnd(1)",
+                                         "2nd.OnTestIterationEnd(1)",
+                                         "1st.OnTestIterationEnd(1)",
+                                         "3rd.OnTestProgramEnd",
+                                         "2nd.OnTestProgramEnd",
+                                         "1st.OnTestProgramEnd"};
+#else
+  const char* const expected_events[] = {"1st.OnTestProgramStart",
+                                         "2nd.OnTestProgramStart",
+                                         "3rd.OnTestProgramStart",
+                                         "1st.OnTestIterationStart(0)",
+                                         "2nd.OnTestIterationStart(0)",
+                                         "3rd.OnTestIterationStart(0)",
+                                         "1st.OnEnvironmentsSetUpStart",
+                                         "2nd.OnEnvironmentsSetUpStart",
+                                         "3rd.OnEnvironmentsSetUpStart",
+                                         "Environment::SetUp",
+                                         "3rd.OnEnvironmentsSetUpEnd",
+                                         "2nd.OnEnvironmentsSetUpEnd",
+                                         "1st.OnEnvironmentsSetUpEnd",
+                                         "3rd.OnTestSuiteStart",
+                                         "ListenerTest::SetUpTestSuite",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "ListenerTest::TearDownTestSuite",
+                                         "3rd.OnTestSuiteEnd",
+                                         "1st.OnEnvironmentsTearDownStart",
+                                         "2nd.OnEnvironmentsTearDownStart",
+                                         "3rd.OnEnvironmentsTearDownStart",
+                                         "Environment::TearDown",
+                                         "3rd.OnEnvironmentsTearDownEnd",
+                                         "2nd.OnEnvironmentsTearDownEnd",
+                                         "1st.OnEnvironmentsTearDownEnd",
+                                         "3rd.OnTestIterationEnd(0)",
+                                         "2nd.OnTestIterationEnd(0)",
+                                         "1st.OnTestIterationEnd(0)",
+                                         "1st.OnTestIterationStart(1)",
+                                         "2nd.OnTestIterationStart(1)",
+                                         "3rd.OnTestIterationStart(1)",
+                                         "1st.OnEnvironmentsSetUpStart",
+                                         "2nd.OnEnvironmentsSetUpStart",
+                                         "3rd.OnEnvironmentsSetUpStart",
+                                         "Environment::SetUp",
+                                         "3rd.OnEnvironmentsSetUpEnd",
+                                         "2nd.OnEnvironmentsSetUpEnd",
+                                         "1st.OnEnvironmentsSetUpEnd",
+                                         "3rd.OnTestSuiteStart",
+                                         "ListenerTest::SetUpTestSuite",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "1st.OnTestStart",
+                                         "2nd.OnTestStart",
+                                         "3rd.OnTestStart",
+                                         "ListenerTest::SetUp",
+                                         "ListenerTest::* Test Body",
+                                         "1st.OnTestPartResult",
+                                         "2nd.OnTestPartResult",
+                                         "3rd.OnTestPartResult",
+                                         "ListenerTest::TearDown",
+                                         "3rd.OnTestEnd",
+                                         "2nd.OnTestEnd",
+                                         "1st.OnTestEnd",
+                                         "ListenerTest::TearDownTestSuite",
+                                         "3rd.OnTestSuiteEnd",
+                                         "1st.OnEnvironmentsTearDownStart",
+                                         "2nd.OnEnvironmentsTearDownStart",
+                                         "3rd.OnEnvironmentsTearDownStart",
+                                         "Environment::TearDown",
+                                         "3rd.OnEnvironmentsTearDownEnd",
+                                         "2nd.OnEnvironmentsTearDownEnd",
+                                         "1st.OnEnvironmentsTearDownEnd",
+                                         "3rd.OnTestIterationEnd(1)",
+                                         "2nd.OnTestIterationEnd(1)",
+                                         "1st.OnTestIterationEnd(1)",
+                                         "3rd.OnTestProgramEnd",
+                                         "2nd.OnTestProgramEnd",
+                                         "1st.OnTestProgramEnd"};
+#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
+
+  VerifyResults(events,
+                expected_events,
+                sizeof(expected_events)/sizeof(expected_events[0]));
+
+  // We need to check manually for ad hoc test failures that happen after
+  // RUN_ALL_TESTS finishes.
+  if (UnitTest::GetInstance()->Failed())
+    ret_val = 1;
+
+  return ret_val;
+}
diff --git a/build/_deps/googletest-src/googletest/test/googletest-message-test.cc b/build/_deps/googletest-src/googletest/test/googletest-message-test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..962d519114e6e4e3dc3df19fde7545571bc031bc
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-message-test.cc
@@ -0,0 +1,158 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Tests for the Message class.
+
+#include "gtest/gtest-message.h"
+
+#include "gtest/gtest.h"
+
+namespace {
+
+using ::testing::Message;
+
+// Tests the testing::Message class
+
+// Tests the default constructor.
+TEST(MessageTest, DefaultConstructor) {
+  const Message msg;
+  EXPECT_EQ("", msg.GetString());
+}
+
+// Tests the copy constructor.
+TEST(MessageTest, CopyConstructor) {
+  const Message msg1("Hello");
+  const Message msg2(msg1);
+  EXPECT_EQ("Hello", msg2.GetString());
+}
+
+// Tests constructing a Message from a C-string.
+TEST(MessageTest, ConstructsFromCString) {
+  Message msg("Hello");
+  EXPECT_EQ("Hello", msg.GetString());
+}
+
+// Tests streaming a float.
+TEST(MessageTest, StreamsFloat) {
+  const std::string s = (Message() << 1.23456F << " " << 2.34567F).GetString();
+  // Both numbers should be printed with enough precision.
+  EXPECT_PRED_FORMAT2(testing::IsSubstring, "1.234560", s.c_str());
+  EXPECT_PRED_FORMAT2(testing::IsSubstring, " 2.345669", s.c_str());
+}
+
+// Tests streaming a double.
+TEST(MessageTest, StreamsDouble) {
+  const std::string s = (Message() << 1260570880.4555497 << " "
+                                  << 1260572265.1954534).GetString();
+  // Both numbers should be printed with enough precision.
+  EXPECT_PRED_FORMAT2(testing::IsSubstring, "1260570880.45", s.c_str());
+  EXPECT_PRED_FORMAT2(testing::IsSubstring, " 1260572265.19", s.c_str());
+}
+
+// Tests streaming a non-char pointer.
+TEST(MessageTest, StreamsPointer) {
+  int n = 0;
+  int* p = &n;
+  EXPECT_NE("(null)", (Message() << p).GetString());
+}
+
+// Tests streaming a NULL non-char pointer.
+TEST(MessageTest, StreamsNullPointer) {
+  int* p = nullptr;
+  EXPECT_EQ("(null)", (Message() << p).GetString());
+}
+
+// Tests streaming a C string.
+TEST(MessageTest, StreamsCString) {
+  EXPECT_EQ("Foo", (Message() << "Foo").GetString());
+}
+
+// Tests streaming a NULL C string.
+TEST(MessageTest, StreamsNullCString) {
+  char* p = nullptr;
+  EXPECT_EQ("(null)", (Message() << p).GetString());
+}
+
+// Tests streaming std::string.
+TEST(MessageTest, StreamsString) {
+  const ::std::string str("Hello");
+  EXPECT_EQ("Hello", (Message() << str).GetString());
+}
+
+// Tests that we can output strings containing embedded NULs.
+TEST(MessageTest, StreamsStringWithEmbeddedNUL) {
+  const char char_array_with_nul[] =
+      "Here's a NUL\0 and some more string";
+  const ::std::string string_with_nul(char_array_with_nul,
+                                      sizeof(char_array_with_nul) - 1);
+  EXPECT_EQ("Here's a NUL\\0 and some more string",
+            (Message() << string_with_nul).GetString());
+}
+
+// Tests streaming a NUL char.
+TEST(MessageTest, StreamsNULChar) {
+  EXPECT_EQ("\\0", (Message() << '\0').GetString());
+}
+
+// Tests streaming int.
+TEST(MessageTest, StreamsInt) {
+  EXPECT_EQ("123", (Message() << 123).GetString());
+}
+
+// Tests that basic IO manipulators (endl, ends, and flush) can be
+// streamed to Message.
+TEST(MessageTest, StreamsBasicIoManip) {
+  EXPECT_EQ("Line 1.\nA NUL char \\0 in line 2.",
+               (Message() << "Line 1." << std::endl
+                         << "A NUL char " << std::ends << std::flush
+                         << " in line 2.").GetString());
+}
+
+// Tests Message::GetString()
+TEST(MessageTest, GetString) {
+  Message msg;
+  msg << 1 << " lamb";
+  EXPECT_EQ("1 lamb", msg.GetString());
+}
+
+// Tests streaming a Message object to an ostream.
+TEST(MessageTest, StreamsToOStream) {
+  Message msg("Hello");
+  ::std::stringstream ss;
+  ss << msg;
+  EXPECT_EQ("Hello", testing::internal::StringStreamToString(&ss));
+}
+
+// Tests that a Message object doesn't take up too much stack space.
+TEST(MessageTest, DoesNotTakeUpMuchStackSpace) {
+  EXPECT_LE(sizeof(Message), 16U);
+}
+
+}  // namespace
diff --git a/build/_deps/googletest-src/googletest/test/googletest-options-test.cc b/build/_deps/googletest-src/googletest/test/googletest-options-test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f07b316db3b94105303b2275eb3f9dc6d111908c
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-options-test.cc
@@ -0,0 +1,216 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Google Test UnitTestOptions tests
+//
+// This file tests classes and functions used internally by
+// Google Test.  They are subject to change without notice.
+//
+// This file is #included from gtest.cc, to avoid changing build or
+// make-files on Windows and other platforms. Do not #include this file
+// anywhere else!
+
+#include "gtest/gtest.h"
+
+#if GTEST_OS_WINDOWS_MOBILE
+# include <windows.h>
+#elif GTEST_OS_WINDOWS
+# include <direct.h>
+#endif  // GTEST_OS_WINDOWS_MOBILE
+
+#include "src/gtest-internal-inl.h"
+
+namespace testing {
+namespace internal {
+namespace {
+
+// Turns the given relative path into an absolute path.
+FilePath GetAbsolutePathOf(const FilePath& relative_path) {
+  return FilePath::ConcatPaths(FilePath::GetCurrentDir(), relative_path);
+}
+
+// Testing UnitTestOptions::GetOutputFormat/GetOutputFile.
+
+TEST(XmlOutputTest, GetOutputFormatDefault) {
+  GTEST_FLAG(output) = "";
+  EXPECT_STREQ("", UnitTestOptions::GetOutputFormat().c_str());
+}
+
+TEST(XmlOutputTest, GetOutputFormat) {
+  GTEST_FLAG(output) = "xml:filename";
+  EXPECT_STREQ("xml", UnitTestOptions::GetOutputFormat().c_str());
+}
+
+TEST(XmlOutputTest, GetOutputFileDefault) {
+  GTEST_FLAG(output) = "";
+  EXPECT_EQ(GetAbsolutePathOf(FilePath("test_detail.xml")).string(),
+            UnitTestOptions::GetAbsolutePathToOutputFile());
+}
+
+TEST(XmlOutputTest, GetOutputFileSingleFile) {
+  GTEST_FLAG(output) = "xml:filename.abc";
+  EXPECT_EQ(GetAbsolutePathOf(FilePath("filename.abc")).string(),
+            UnitTestOptions::GetAbsolutePathToOutputFile());
+}
+
+TEST(XmlOutputTest, GetOutputFileFromDirectoryPath) {
+  GTEST_FLAG(output) = "xml:path" GTEST_PATH_SEP_;
+  const std::string expected_output_file =
+      GetAbsolutePathOf(
+          FilePath(std::string("path") + GTEST_PATH_SEP_ +
+                   GetCurrentExecutableName().string() + ".xml")).string();
+  const std::string& output_file =
+      UnitTestOptions::GetAbsolutePathToOutputFile();
+#if GTEST_OS_WINDOWS
+  EXPECT_STRCASEEQ(expected_output_file.c_str(), output_file.c_str());
+#else
+  EXPECT_EQ(expected_output_file, output_file.c_str());
+#endif
+}
+
+TEST(OutputFileHelpersTest, GetCurrentExecutableName) {
+  const std::string exe_str = GetCurrentExecutableName().string();
+#if GTEST_OS_WINDOWS
+  const bool success =
+      _strcmpi("googletest-options-test", exe_str.c_str()) == 0 ||
+      _strcmpi("gtest-options-ex_test", exe_str.c_str()) == 0 ||
+      _strcmpi("gtest_all_test", exe_str.c_str()) == 0 ||
+      _strcmpi("gtest_dll_test", exe_str.c_str()) == 0;
+#elif GTEST_OS_OS2
+  const bool success =
+      strcasecmp("googletest-options-test", exe_str.c_str()) == 0 ||
+      strcasecmp("gtest-options-ex_test", exe_str.c_str()) == 0 ||
+      strcasecmp("gtest_all_test", exe_str.c_str()) == 0 ||
+      strcasecmp("gtest_dll_test", exe_str.c_str()) == 0;
+#elif GTEST_OS_FUCHSIA
+  const bool success = exe_str == "app";
+#else
+  const bool success =
+      exe_str == "googletest-options-test" ||
+      exe_str == "gtest_all_test" ||
+      exe_str == "lt-gtest_all_test" ||
+      exe_str == "gtest_dll_test";
+#endif  // GTEST_OS_WINDOWS
+  if (!success)
+    FAIL() << "GetCurrentExecutableName() returns " << exe_str;
+}
+
+#if !GTEST_OS_FUCHSIA
+
+class XmlOutputChangeDirTest : public Test {
+ protected:
+  void SetUp() override {
+    original_working_dir_ = FilePath::GetCurrentDir();
+    posix::ChDir("..");
+    // This will make the test fail if run from the root directory.
+    EXPECT_NE(original_working_dir_.string(),
+              FilePath::GetCurrentDir().string());
+  }
+
+  void TearDown() override {
+    posix::ChDir(original_working_dir_.string().c_str());
+  }
+
+  FilePath original_working_dir_;
+};
+
+TEST_F(XmlOutputChangeDirTest, PreserveOriginalWorkingDirWithDefault) {
+  GTEST_FLAG(output) = "";
+  EXPECT_EQ(FilePath::ConcatPaths(original_working_dir_,
+                                  FilePath("test_detail.xml")).string(),
+            UnitTestOptions::GetAbsolutePathToOutputFile());
+}
+
+TEST_F(XmlOutputChangeDirTest, PreserveOriginalWorkingDirWithDefaultXML) {
+  GTEST_FLAG(output) = "xml";
+  EXPECT_EQ(FilePath::ConcatPaths(original_working_dir_,
+                                  FilePath("test_detail.xml")).string(),
+            UnitTestOptions::GetAbsolutePathToOutputFile());
+}
+
+TEST_F(XmlOutputChangeDirTest, PreserveOriginalWorkingDirWithRelativeFile) {
+  GTEST_FLAG(output) = "xml:filename.abc";
+  EXPECT_EQ(FilePath::ConcatPaths(original_working_dir_,
+                                  FilePath("filename.abc")).string(),
+            UnitTestOptions::GetAbsolutePathToOutputFile());
+}
+
+TEST_F(XmlOutputChangeDirTest, PreserveOriginalWorkingDirWithRelativePath) {
+  GTEST_FLAG(output) = "xml:path" GTEST_PATH_SEP_;
+  const std::string expected_output_file =
+      FilePath::ConcatPaths(
+          original_working_dir_,
+          FilePath(std::string("path") + GTEST_PATH_SEP_ +
+                   GetCurrentExecutableName().string() + ".xml")).string();
+  const std::string& output_file =
+      UnitTestOptions::GetAbsolutePathToOutputFile();
+#if GTEST_OS_WINDOWS
+  EXPECT_STRCASEEQ(expected_output_file.c_str(), output_file.c_str());
+#else
+  EXPECT_EQ(expected_output_file, output_file.c_str());
+#endif
+}
+
+TEST_F(XmlOutputChangeDirTest, PreserveOriginalWorkingDirWithAbsoluteFile) {
+#if GTEST_OS_WINDOWS
+  GTEST_FLAG(output) = "xml:c:\\tmp\\filename.abc";
+  EXPECT_EQ(FilePath("c:\\tmp\\filename.abc").string(),
+            UnitTestOptions::GetAbsolutePathToOutputFile());
+#else
+  GTEST_FLAG(output) ="xml:/tmp/filename.abc";
+  EXPECT_EQ(FilePath("/tmp/filename.abc").string(),
+            UnitTestOptions::GetAbsolutePathToOutputFile());
+#endif
+}
+
+TEST_F(XmlOutputChangeDirTest, PreserveOriginalWorkingDirWithAbsolutePath) {
+#if GTEST_OS_WINDOWS
+  const std::string path = "c:\\tmp\\";
+#else
+  const std::string path = "/tmp/";
+#endif
+
+  GTEST_FLAG(output) = "xml:" + path;
+  const std::string expected_output_file =
+      path + GetCurrentExecutableName().string() + ".xml";
+  const std::string& output_file =
+      UnitTestOptions::GetAbsolutePathToOutputFile();
+
+#if GTEST_OS_WINDOWS
+  EXPECT_STRCASEEQ(expected_output_file.c_str(), output_file.c_str());
+#else
+  EXPECT_EQ(expected_output_file, output_file.c_str());
+#endif
+}
+
+#endif  // !GTEST_OS_FUCHSIA
+
+}  // namespace
+}  // namespace internal
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googletest/test/googletest-output-test-golden-lin.txt b/build/_deps/googletest-src/googletest/test/googletest-output-test-golden-lin.txt
new file mode 100644
index 0000000000000000000000000000000000000000..038de921baba594bf7c001b89d3eb6d6b111b880
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-output-test-golden-lin.txt
@@ -0,0 +1,1140 @@
+The non-test part of the code is expected to have 2 failures.
+
+googletest-output-test_.cc:#: Failure
+Value of: false
+  Actual: false
+Expected: true
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  2
+  3
+Stack trace: (omitted)
+
+[==========] Running 85 tests from 40 test suites.
+[----------] Global test environment set-up.
+FooEnvironment::SetUp() called.
+BarEnvironment::SetUp() called.
+[----------] 1 test from ADeathTest
+[ RUN      ] ADeathTest.ShouldRunFirst
+[       OK ] ADeathTest.ShouldRunFirst
+[----------] 1 test from ATypedDeathTest/0, where TypeParam = int
+[ RUN      ] ATypedDeathTest/0.ShouldRunFirst
+[       OK ] ATypedDeathTest/0.ShouldRunFirst
+[----------] 1 test from ATypedDeathTest/1, where TypeParam = double
+[ RUN      ] ATypedDeathTest/1.ShouldRunFirst
+[       OK ] ATypedDeathTest/1.ShouldRunFirst
+[----------] 1 test from My/ATypeParamDeathTest/0, where TypeParam = int
+[ RUN      ] My/ATypeParamDeathTest/0.ShouldRunFirst
+[       OK ] My/ATypeParamDeathTest/0.ShouldRunFirst
+[----------] 1 test from My/ATypeParamDeathTest/1, where TypeParam = double
+[ RUN      ] My/ATypeParamDeathTest/1.ShouldRunFirst
+[       OK ] My/ATypeParamDeathTest/1.ShouldRunFirst
+[----------] 2 tests from PassingTest
+[ RUN      ] PassingTest.PassingTest1
+[       OK ] PassingTest.PassingTest1
+[ RUN      ] PassingTest.PassingTest2
+[       OK ] PassingTest.PassingTest2
+[----------] 2 tests from NonfatalFailureTest
+[ RUN      ] NonfatalFailureTest.EscapesStringOperands
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  kGoldenString
+    Which is: "\"Line"
+  actual
+    Which is: "actual \"string\""
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  golden
+    Which is: "\"Line"
+  actual
+    Which is: "actual \"string\""
+Stack trace: (omitted)
+
+[  FAILED  ] NonfatalFailureTest.EscapesStringOperands
+[ RUN      ] NonfatalFailureTest.DiffForLongStrings
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  golden_str
+    Which is: "\"Line\0 1\"\nLine 2"
+  "Line 2"
+With diff:
+@@ -1,2 @@
+-\"Line\0 1\"
+ Line 2
+
+Stack trace: (omitted)
+
+[  FAILED  ] NonfatalFailureTest.DiffForLongStrings
+[----------] 3 tests from FatalFailureTest
+[ RUN      ] FatalFailureTest.FatalFailureInSubroutine
+(expecting a failure that x should be 1)
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1
+  x
+    Which is: 2
+Stack trace: (omitted)
+
+[  FAILED  ] FatalFailureTest.FatalFailureInSubroutine
+[ RUN      ] FatalFailureTest.FatalFailureInNestedSubroutine
+(expecting a failure that x should be 1)
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1
+  x
+    Which is: 2
+Stack trace: (omitted)
+
+[  FAILED  ] FatalFailureTest.FatalFailureInNestedSubroutine
+[ RUN      ] FatalFailureTest.NonfatalFailureInSubroutine
+(expecting a failure on false)
+googletest-output-test_.cc:#: Failure
+Value of: false
+  Actual: false
+Expected: true
+Stack trace: (omitted)
+
+[  FAILED  ] FatalFailureTest.NonfatalFailureInSubroutine
+[----------] 1 test from LoggingTest
+[ RUN      ] LoggingTest.InterleavingLoggingAndAssertions
+(expecting 2 failures on (3) >= (a[i]))
+i == 0
+i == 1
+googletest-output-test_.cc:#: Failure
+Expected: (3) >= (a[i]), actual: 3 vs 9
+Stack trace: (omitted)
+
+i == 2
+i == 3
+googletest-output-test_.cc:#: Failure
+Expected: (3) >= (a[i]), actual: 3 vs 6
+Stack trace: (omitted)
+
+[  FAILED  ] LoggingTest.InterleavingLoggingAndAssertions
+[----------] 7 tests from SCOPED_TRACETest
+[ RUN      ] SCOPED_TRACETest.AcceptedValues
+googletest-output-test_.cc:#: Failure
+Failed
+Just checking that all these values work fine.
+Google Test trace:
+googletest-output-test_.cc:#: (null)
+googletest-output-test_.cc:#: 1337
+googletest-output-test_.cc:#: std::string
+googletest-output-test_.cc:#: literal string
+Stack trace: (omitted)
+
+[  FAILED  ] SCOPED_TRACETest.AcceptedValues
+[ RUN      ] SCOPED_TRACETest.ObeysScopes
+(expected to fail)
+googletest-output-test_.cc:#: Failure
+Failed
+This failure is expected, and shouldn't have a trace.
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+This failure is expected, and should have a trace.
+Google Test trace:
+googletest-output-test_.cc:#: Expected trace
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+This failure is expected, and shouldn't have a trace.
+Stack trace: (omitted)
+
+[  FAILED  ] SCOPED_TRACETest.ObeysScopes
+[ RUN      ] SCOPED_TRACETest.WorksInLoop
+(expected to fail)
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  2
+  n
+    Which is: 1
+Google Test trace:
+googletest-output-test_.cc:#: i = 1
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1
+  n
+    Which is: 2
+Google Test trace:
+googletest-output-test_.cc:#: i = 2
+Stack trace: (omitted)
+
+[  FAILED  ] SCOPED_TRACETest.WorksInLoop
+[ RUN      ] SCOPED_TRACETest.WorksInSubroutine
+(expected to fail)
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  2
+  n
+    Which is: 1
+Google Test trace:
+googletest-output-test_.cc:#: n = 1
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1
+  n
+    Which is: 2
+Google Test trace:
+googletest-output-test_.cc:#: n = 2
+Stack trace: (omitted)
+
+[  FAILED  ] SCOPED_TRACETest.WorksInSubroutine
+[ RUN      ] SCOPED_TRACETest.CanBeNested
+(expected to fail)
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1
+  n
+    Which is: 2
+Google Test trace:
+googletest-output-test_.cc:#: n = 2
+googletest-output-test_.cc:#: 
+Stack trace: (omitted)
+
+[  FAILED  ] SCOPED_TRACETest.CanBeNested
+[ RUN      ] SCOPED_TRACETest.CanBeRepeated
+(expected to fail)
+googletest-output-test_.cc:#: Failure
+Failed
+This failure is expected, and should contain trace point A.
+Google Test trace:
+googletest-output-test_.cc:#: A
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+This failure is expected, and should contain trace point A and B.
+Google Test trace:
+googletest-output-test_.cc:#: B
+googletest-output-test_.cc:#: A
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+This failure is expected, and should contain trace point A, B, and C.
+Google Test trace:
+googletest-output-test_.cc:#: C
+googletest-output-test_.cc:#: B
+googletest-output-test_.cc:#: A
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+This failure is expected, and should contain trace point A, B, and D.
+Google Test trace:
+googletest-output-test_.cc:#: D
+googletest-output-test_.cc:#: B
+googletest-output-test_.cc:#: A
+Stack trace: (omitted)
+
+[  FAILED  ] SCOPED_TRACETest.CanBeRepeated
+[ RUN      ] SCOPED_TRACETest.WorksConcurrently
+(expecting 6 failures)
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #1 (in thread B, only trace B alive).
+Google Test trace:
+googletest-output-test_.cc:#: Trace B
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #2 (in thread A, trace A & B both alive).
+Google Test trace:
+googletest-output-test_.cc:#: Trace A
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #3 (in thread B, trace A & B both alive).
+Google Test trace:
+googletest-output-test_.cc:#: Trace B
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #4 (in thread B, only trace A alive).
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #5 (in thread A, only trace A alive).
+Google Test trace:
+googletest-output-test_.cc:#: Trace A
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #6 (in thread A, no trace alive).
+Stack trace: (omitted)
+
+[  FAILED  ] SCOPED_TRACETest.WorksConcurrently
+[----------] 1 test from ScopedTraceTest
+[ RUN      ] ScopedTraceTest.WithExplicitFileAndLine
+googletest-output-test_.cc:#: Failure
+Failed
+Check that the trace is attached to a particular location.
+Google Test trace:
+explicit_file.cc:123: expected trace message
+Stack trace: (omitted)
+
+[  FAILED  ] ScopedTraceTest.WithExplicitFileAndLine
+[----------] 1 test from NonFatalFailureInFixtureConstructorTest
+[ RUN      ] NonFatalFailureInFixtureConstructorTest.FailureInConstructor
+(expecting 5 failures)
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #1, in the test fixture c'tor.
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #2, in SetUp().
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #3, in the test body.
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #4, in TearDown.
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #5, in the test fixture d'tor.
+Stack trace: (omitted)
+
+[  FAILED  ] NonFatalFailureInFixtureConstructorTest.FailureInConstructor
+[----------] 1 test from FatalFailureInFixtureConstructorTest
+[ RUN      ] FatalFailureInFixtureConstructorTest.FailureInConstructor
+(expecting 2 failures)
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #1, in the test fixture c'tor.
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #2, in the test fixture d'tor.
+Stack trace: (omitted)
+
+[  FAILED  ] FatalFailureInFixtureConstructorTest.FailureInConstructor
+[----------] 1 test from NonFatalFailureInSetUpTest
+[ RUN      ] NonFatalFailureInSetUpTest.FailureInSetUp
+(expecting 4 failures)
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #1, in SetUp().
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #2, in the test function.
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #3, in TearDown().
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #4, in the test fixture d'tor.
+Stack trace: (omitted)
+
+[  FAILED  ] NonFatalFailureInSetUpTest.FailureInSetUp
+[----------] 1 test from FatalFailureInSetUpTest
+[ RUN      ] FatalFailureInSetUpTest.FailureInSetUp
+(expecting 3 failures)
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #1, in SetUp().
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #2, in TearDown().
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected failure #3, in the test fixture d'tor.
+Stack trace: (omitted)
+
+[  FAILED  ] FatalFailureInSetUpTest.FailureInSetUp
+[----------] 1 test from AddFailureAtTest
+[ RUN      ] AddFailureAtTest.MessageContainsSpecifiedFileAndLineNumber
+foo.cc:42: Failure
+Failed
+Expected nonfatal failure in foo.cc
+Stack trace: (omitted)
+
+[  FAILED  ] AddFailureAtTest.MessageContainsSpecifiedFileAndLineNumber
+[----------] 1 test from GtestFailAtTest
+[ RUN      ] GtestFailAtTest.MessageContainsSpecifiedFileAndLineNumber
+foo.cc:42: Failure
+Failed
+Expected fatal failure in foo.cc
+Stack trace: (omitted)
+
+[  FAILED  ] GtestFailAtTest.MessageContainsSpecifiedFileAndLineNumber
+[----------] 4 tests from MixedUpTestSuiteTest
+[ RUN      ] MixedUpTestSuiteTest.FirstTestFromNamespaceFoo
+[       OK ] MixedUpTestSuiteTest.FirstTestFromNamespaceFoo
+[ RUN      ] MixedUpTestSuiteTest.SecondTestFromNamespaceFoo
+[       OK ] MixedUpTestSuiteTest.SecondTestFromNamespaceFoo
+[ RUN      ] MixedUpTestSuiteTest.ThisShouldFail
+gtest.cc:#: Failure
+Failed
+All tests in the same test suite must use the same test fixture
+class.  However, in test suite MixedUpTestSuiteTest,
+you defined test FirstTestFromNamespaceFoo and test ThisShouldFail
+using two different test fixture classes.  This can happen if
+the two classes are from different namespaces or translation
+units and have the same name.  You should probably rename one
+of the classes to put the tests into different test suites.
+Stack trace: (omitted)
+
+[  FAILED  ] MixedUpTestSuiteTest.ThisShouldFail
+[ RUN      ] MixedUpTestSuiteTest.ThisShouldFailToo
+gtest.cc:#: Failure
+Failed
+All tests in the same test suite must use the same test fixture
+class.  However, in test suite MixedUpTestSuiteTest,
+you defined test FirstTestFromNamespaceFoo and test ThisShouldFailToo
+using two different test fixture classes.  This can happen if
+the two classes are from different namespaces or translation
+units and have the same name.  You should probably rename one
+of the classes to put the tests into different test suites.
+Stack trace: (omitted)
+
+[  FAILED  ] MixedUpTestSuiteTest.ThisShouldFailToo
+[----------] 2 tests from MixedUpTestSuiteWithSameTestNameTest
+[ RUN      ] MixedUpTestSuiteWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
+[       OK ] MixedUpTestSuiteWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
+[ RUN      ] MixedUpTestSuiteWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
+gtest.cc:#: Failure
+Failed
+All tests in the same test suite must use the same test fixture
+class.  However, in test suite MixedUpTestSuiteWithSameTestNameTest,
+you defined test TheSecondTestWithThisNameShouldFail and test TheSecondTestWithThisNameShouldFail
+using two different test fixture classes.  This can happen if
+the two classes are from different namespaces or translation
+units and have the same name.  You should probably rename one
+of the classes to put the tests into different test suites.
+Stack trace: (omitted)
+
+[  FAILED  ] MixedUpTestSuiteWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
+[----------] 2 tests from TEST_F_before_TEST_in_same_test_case
+[ RUN      ] TEST_F_before_TEST_in_same_test_case.DefinedUsingTEST_F
+[       OK ] TEST_F_before_TEST_in_same_test_case.DefinedUsingTEST_F
+[ RUN      ] TEST_F_before_TEST_in_same_test_case.DefinedUsingTESTAndShouldFail
+gtest.cc:#: Failure
+Failed
+All tests in the same test suite must use the same test fixture
+class, so mixing TEST_F and TEST in the same test suite is
+illegal.  In test suite TEST_F_before_TEST_in_same_test_case,
+test DefinedUsingTEST_F is defined using TEST_F but
+test DefinedUsingTESTAndShouldFail is defined using TEST.  You probably
+want to change the TEST to TEST_F or move it to another test
+case.
+Stack trace: (omitted)
+
+[  FAILED  ] TEST_F_before_TEST_in_same_test_case.DefinedUsingTESTAndShouldFail
+[----------] 2 tests from TEST_before_TEST_F_in_same_test_case
+[ RUN      ] TEST_before_TEST_F_in_same_test_case.DefinedUsingTEST
+[       OK ] TEST_before_TEST_F_in_same_test_case.DefinedUsingTEST
+[ RUN      ] TEST_before_TEST_F_in_same_test_case.DefinedUsingTEST_FAndShouldFail
+gtest.cc:#: Failure
+Failed
+All tests in the same test suite must use the same test fixture
+class, so mixing TEST_F and TEST in the same test suite is
+illegal.  In test suite TEST_before_TEST_F_in_same_test_case,
+test DefinedUsingTEST_FAndShouldFail is defined using TEST_F but
+test DefinedUsingTEST is defined using TEST.  You probably
+want to change the TEST to TEST_F or move it to another test
+case.
+Stack trace: (omitted)
+
+[  FAILED  ] TEST_before_TEST_F_in_same_test_case.DefinedUsingTEST_FAndShouldFail
+[----------] 8 tests from ExpectNonfatalFailureTest
+[ RUN      ] ExpectNonfatalFailureTest.CanReferenceGlobalVariables
+[       OK ] ExpectNonfatalFailureTest.CanReferenceGlobalVariables
+[ RUN      ] ExpectNonfatalFailureTest.CanReferenceLocalVariables
+[       OK ] ExpectNonfatalFailureTest.CanReferenceLocalVariables
+[ RUN      ] ExpectNonfatalFailureTest.SucceedsWhenThereIsOneNonfatalFailure
+[       OK ] ExpectNonfatalFailureTest.SucceedsWhenThereIsOneNonfatalFailure
+[ RUN      ] ExpectNonfatalFailureTest.FailsWhenThereIsNoNonfatalFailure
+(expecting a failure)
+gtest.cc:#: Failure
+Expected: 1 non-fatal failure
+  Actual: 0 failures
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectNonfatalFailureTest.FailsWhenThereIsNoNonfatalFailure
+[ RUN      ] ExpectNonfatalFailureTest.FailsWhenThereAreTwoNonfatalFailures
+(expecting a failure)
+gtest.cc:#: Failure
+Expected: 1 non-fatal failure
+  Actual: 2 failures
+googletest-output-test_.cc:#: Non-fatal failure:
+Failed
+Expected non-fatal failure 1.
+Stack trace: (omitted)
+
+
+googletest-output-test_.cc:#: Non-fatal failure:
+Failed
+Expected non-fatal failure 2.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectNonfatalFailureTest.FailsWhenThereAreTwoNonfatalFailures
+[ RUN      ] ExpectNonfatalFailureTest.FailsWhenThereIsOneFatalFailure
+(expecting a failure)
+gtest.cc:#: Failure
+Expected: 1 non-fatal failure
+  Actual:
+googletest-output-test_.cc:#: Fatal failure:
+Failed
+Expected fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectNonfatalFailureTest.FailsWhenThereIsOneFatalFailure
+[ RUN      ] ExpectNonfatalFailureTest.FailsWhenStatementReturns
+(expecting a failure)
+gtest.cc:#: Failure
+Expected: 1 non-fatal failure
+  Actual: 0 failures
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectNonfatalFailureTest.FailsWhenStatementReturns
+[ RUN      ] ExpectNonfatalFailureTest.FailsWhenStatementThrows
+(expecting a failure)
+gtest.cc:#: Failure
+Expected: 1 non-fatal failure
+  Actual: 0 failures
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectNonfatalFailureTest.FailsWhenStatementThrows
+[----------] 8 tests from ExpectFatalFailureTest
+[ RUN      ] ExpectFatalFailureTest.CanReferenceGlobalVariables
+[       OK ] ExpectFatalFailureTest.CanReferenceGlobalVariables
+[ RUN      ] ExpectFatalFailureTest.CanReferenceLocalStaticVariables
+[       OK ] ExpectFatalFailureTest.CanReferenceLocalStaticVariables
+[ RUN      ] ExpectFatalFailureTest.SucceedsWhenThereIsOneFatalFailure
+[       OK ] ExpectFatalFailureTest.SucceedsWhenThereIsOneFatalFailure
+[ RUN      ] ExpectFatalFailureTest.FailsWhenThereIsNoFatalFailure
+(expecting a failure)
+gtest.cc:#: Failure
+Expected: 1 fatal failure
+  Actual: 0 failures
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectFatalFailureTest.FailsWhenThereIsNoFatalFailure
+[ RUN      ] ExpectFatalFailureTest.FailsWhenThereAreTwoFatalFailures
+(expecting a failure)
+gtest.cc:#: Failure
+Expected: 1 fatal failure
+  Actual: 2 failures
+googletest-output-test_.cc:#: Fatal failure:
+Failed
+Expected fatal failure.
+Stack trace: (omitted)
+
+
+googletest-output-test_.cc:#: Fatal failure:
+Failed
+Expected fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectFatalFailureTest.FailsWhenThereAreTwoFatalFailures
+[ RUN      ] ExpectFatalFailureTest.FailsWhenThereIsOneNonfatalFailure
+(expecting a failure)
+gtest.cc:#: Failure
+Expected: 1 fatal failure
+  Actual:
+googletest-output-test_.cc:#: Non-fatal failure:
+Failed
+Expected non-fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectFatalFailureTest.FailsWhenThereIsOneNonfatalFailure
+[ RUN      ] ExpectFatalFailureTest.FailsWhenStatementReturns
+(expecting a failure)
+gtest.cc:#: Failure
+Expected: 1 fatal failure
+  Actual: 0 failures
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectFatalFailureTest.FailsWhenStatementReturns
+[ RUN      ] ExpectFatalFailureTest.FailsWhenStatementThrows
+(expecting a failure)
+gtest.cc:#: Failure
+Expected: 1 fatal failure
+  Actual: 0 failures
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectFatalFailureTest.FailsWhenStatementThrows
+[----------] 2 tests from TypedTest/0, where TypeParam = int
+[ RUN      ] TypedTest/0.Success
+[       OK ] TypedTest/0.Success
+[ RUN      ] TypedTest/0.Failure
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1
+  TypeParam()
+    Which is: 0
+Expected failure
+Stack trace: (omitted)
+
+[  FAILED  ] TypedTest/0.Failure, where TypeParam = int
+[----------] 2 tests from TypedTestWithNames/char0, where TypeParam = char
+[ RUN      ] TypedTestWithNames/char0.Success
+[       OK ] TypedTestWithNames/char0.Success
+[ RUN      ] TypedTestWithNames/char0.Failure
+googletest-output-test_.cc:#: Failure
+Failed
+Stack trace: (omitted)
+
+[  FAILED  ] TypedTestWithNames/char0.Failure, where TypeParam = char
+[----------] 2 tests from TypedTestWithNames/int1, where TypeParam = int
+[ RUN      ] TypedTestWithNames/int1.Success
+[       OK ] TypedTestWithNames/int1.Success
+[ RUN      ] TypedTestWithNames/int1.Failure
+googletest-output-test_.cc:#: Failure
+Failed
+Stack trace: (omitted)
+
+[  FAILED  ] TypedTestWithNames/int1.Failure, where TypeParam = int
+[----------] 2 tests from Unsigned/TypedTestP/0, where TypeParam = unsigned char
+[ RUN      ] Unsigned/TypedTestP/0.Success
+[       OK ] Unsigned/TypedTestP/0.Success
+[ RUN      ] Unsigned/TypedTestP/0.Failure
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1U
+    Which is: 1
+  TypeParam()
+    Which is: '\0'
+Expected failure
+Stack trace: (omitted)
+
+[  FAILED  ] Unsigned/TypedTestP/0.Failure, where TypeParam = unsigned char
+[----------] 2 tests from Unsigned/TypedTestP/1, where TypeParam = unsigned int
+[ RUN      ] Unsigned/TypedTestP/1.Success
+[       OK ] Unsigned/TypedTestP/1.Success
+[ RUN      ] Unsigned/TypedTestP/1.Failure
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1U
+    Which is: 1
+  TypeParam()
+    Which is: 0
+Expected failure
+Stack trace: (omitted)
+
+[  FAILED  ] Unsigned/TypedTestP/1.Failure, where TypeParam = unsigned int
+[----------] 2 tests from UnsignedCustomName/TypedTestP/unsignedChar0, where TypeParam = unsigned char
+[ RUN      ] UnsignedCustomName/TypedTestP/unsignedChar0.Success
+[       OK ] UnsignedCustomName/TypedTestP/unsignedChar0.Success
+[ RUN      ] UnsignedCustomName/TypedTestP/unsignedChar0.Failure
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1U
+    Which is: 1
+  TypeParam()
+    Which is: '\0'
+Expected failure
+Stack trace: (omitted)
+
+[  FAILED  ] UnsignedCustomName/TypedTestP/unsignedChar0.Failure, where TypeParam = unsigned char
+[----------] 2 tests from UnsignedCustomName/TypedTestP/unsignedInt1, where TypeParam = unsigned int
+[ RUN      ] UnsignedCustomName/TypedTestP/unsignedInt1.Success
+[       OK ] UnsignedCustomName/TypedTestP/unsignedInt1.Success
+[ RUN      ] UnsignedCustomName/TypedTestP/unsignedInt1.Failure
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1U
+    Which is: 1
+  TypeParam()
+    Which is: 0
+Expected failure
+Stack trace: (omitted)
+
+[  FAILED  ] UnsignedCustomName/TypedTestP/unsignedInt1.Failure, where TypeParam = unsigned int
+[----------] 4 tests from ExpectFailureTest
+[ RUN      ] ExpectFailureTest.ExpectFatalFailure
+(expecting 1 failure)
+gtest.cc:#: Failure
+Expected: 1 fatal failure
+  Actual:
+googletest-output-test_.cc:#: Success:
+Succeeded
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+(expecting 1 failure)
+gtest.cc:#: Failure
+Expected: 1 fatal failure
+  Actual:
+googletest-output-test_.cc:#: Non-fatal failure:
+Failed
+Expected non-fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+(expecting 1 failure)
+gtest.cc:#: Failure
+Expected: 1 fatal failure containing "Some other fatal failure expected."
+  Actual:
+googletest-output-test_.cc:#: Fatal failure:
+Failed
+Expected fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectFailureTest.ExpectFatalFailure
+[ RUN      ] ExpectFailureTest.ExpectNonFatalFailure
+(expecting 1 failure)
+gtest.cc:#: Failure
+Expected: 1 non-fatal failure
+  Actual:
+googletest-output-test_.cc:#: Success:
+Succeeded
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+(expecting 1 failure)
+gtest.cc:#: Failure
+Expected: 1 non-fatal failure
+  Actual:
+googletest-output-test_.cc:#: Fatal failure:
+Failed
+Expected fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+(expecting 1 failure)
+gtest.cc:#: Failure
+Expected: 1 non-fatal failure containing "Some other non-fatal failure."
+  Actual:
+googletest-output-test_.cc:#: Non-fatal failure:
+Failed
+Expected non-fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectFailureTest.ExpectNonFatalFailure
+[ RUN      ] ExpectFailureTest.ExpectFatalFailureOnAllThreads
+(expecting 1 failure)
+gtest.cc:#: Failure
+Expected: 1 fatal failure
+  Actual:
+googletest-output-test_.cc:#: Success:
+Succeeded
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+(expecting 1 failure)
+gtest.cc:#: Failure
+Expected: 1 fatal failure
+  Actual:
+googletest-output-test_.cc:#: Non-fatal failure:
+Failed
+Expected non-fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+(expecting 1 failure)
+gtest.cc:#: Failure
+Expected: 1 fatal failure containing "Some other fatal failure expected."
+  Actual:
+googletest-output-test_.cc:#: Fatal failure:
+Failed
+Expected fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectFailureTest.ExpectFatalFailureOnAllThreads
+[ RUN      ] ExpectFailureTest.ExpectNonFatalFailureOnAllThreads
+(expecting 1 failure)
+gtest.cc:#: Failure
+Expected: 1 non-fatal failure
+  Actual:
+googletest-output-test_.cc:#: Success:
+Succeeded
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+(expecting 1 failure)
+gtest.cc:#: Failure
+Expected: 1 non-fatal failure
+  Actual:
+googletest-output-test_.cc:#: Fatal failure:
+Failed
+Expected fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+(expecting 1 failure)
+gtest.cc:#: Failure
+Expected: 1 non-fatal failure containing "Some other non-fatal failure."
+  Actual:
+googletest-output-test_.cc:#: Non-fatal failure:
+Failed
+Expected non-fatal failure.
+Stack trace: (omitted)
+
+
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectFailureTest.ExpectNonFatalFailureOnAllThreads
+[----------] 2 tests from ExpectFailureWithThreadsTest
+[ RUN      ] ExpectFailureWithThreadsTest.ExpectFatalFailure
+(expecting 2 failures)
+googletest-output-test_.cc:#: Failure
+Failed
+Expected fatal failure.
+Stack trace: (omitted)
+
+gtest.cc:#: Failure
+Expected: 1 fatal failure
+  Actual: 0 failures
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectFailureWithThreadsTest.ExpectFatalFailure
+[ RUN      ] ExpectFailureWithThreadsTest.ExpectNonFatalFailure
+(expecting 2 failures)
+googletest-output-test_.cc:#: Failure
+Failed
+Expected non-fatal failure.
+Stack trace: (omitted)
+
+gtest.cc:#: Failure
+Expected: 1 non-fatal failure
+  Actual: 0 failures
+Stack trace: (omitted)
+
+[  FAILED  ] ExpectFailureWithThreadsTest.ExpectNonFatalFailure
+[----------] 1 test from ScopedFakeTestPartResultReporterTest
+[ RUN      ] ScopedFakeTestPartResultReporterTest.InterceptOnlyCurrentThread
+(expecting 2 failures)
+googletest-output-test_.cc:#: Failure
+Failed
+Expected fatal failure.
+Stack trace: (omitted)
+
+googletest-output-test_.cc:#: Failure
+Failed
+Expected non-fatal failure.
+Stack trace: (omitted)
+
+[  FAILED  ] ScopedFakeTestPartResultReporterTest.InterceptOnlyCurrentThread
+[----------] 2 tests from DynamicFixture
+DynamicFixture::SetUpTestSuite
+[ RUN      ] DynamicFixture.DynamicTestPass
+DynamicFixture()
+DynamicFixture::SetUp
+DynamicFixture::TearDown
+~DynamicFixture()
+[       OK ] DynamicFixture.DynamicTestPass
+[ RUN      ] DynamicFixture.DynamicTestFail
+DynamicFixture()
+DynamicFixture::SetUp
+googletest-output-test_.cc:#: Failure
+Value of: Pass
+  Actual: false
+Expected: true
+Stack trace: (omitted)
+
+DynamicFixture::TearDown
+~DynamicFixture()
+[  FAILED  ] DynamicFixture.DynamicTestFail
+DynamicFixture::TearDownTestSuite
+[----------] 1 test from DynamicFixtureAnotherName
+DynamicFixture::SetUpTestSuite
+[ RUN      ] DynamicFixtureAnotherName.DynamicTestPass
+DynamicFixture()
+DynamicFixture::SetUp
+DynamicFixture::TearDown
+~DynamicFixture()
+[       OK ] DynamicFixtureAnotherName.DynamicTestPass
+DynamicFixture::TearDownTestSuite
+[----------] 2 tests from BadDynamicFixture1
+DynamicFixture::SetUpTestSuite
+[ RUN      ] BadDynamicFixture1.FixtureBase
+DynamicFixture()
+DynamicFixture::SetUp
+DynamicFixture::TearDown
+~DynamicFixture()
+[       OK ] BadDynamicFixture1.FixtureBase
+[ RUN      ] BadDynamicFixture1.TestBase
+DynamicFixture()
+gtest.cc:#: Failure
+Failed
+All tests in the same test suite must use the same test fixture
+class, so mixing TEST_F and TEST in the same test suite is
+illegal.  In test suite BadDynamicFixture1,
+test FixtureBase is defined using TEST_F but
+test TestBase is defined using TEST.  You probably
+want to change the TEST to TEST_F or move it to another test
+case.
+Stack trace: (omitted)
+
+~DynamicFixture()
+[  FAILED  ] BadDynamicFixture1.TestBase
+DynamicFixture::TearDownTestSuite
+[----------] 2 tests from BadDynamicFixture2
+DynamicFixture::SetUpTestSuite
+[ RUN      ] BadDynamicFixture2.FixtureBase
+DynamicFixture()
+DynamicFixture::SetUp
+DynamicFixture::TearDown
+~DynamicFixture()
+[       OK ] BadDynamicFixture2.FixtureBase
+[ RUN      ] BadDynamicFixture2.Derived
+DynamicFixture()
+gtest.cc:#: Failure
+Failed
+All tests in the same test suite must use the same test fixture
+class.  However, in test suite BadDynamicFixture2,
+you defined test FixtureBase and test Derived
+using two different test fixture classes.  This can happen if
+the two classes are from different namespaces or translation
+units and have the same name.  You should probably rename one
+of the classes to put the tests into different test suites.
+Stack trace: (omitted)
+
+~DynamicFixture()
+[  FAILED  ] BadDynamicFixture2.Derived
+DynamicFixture::TearDownTestSuite
+[----------] 1 test from PrintingFailingParams/FailingParamTest
+[ RUN      ] PrintingFailingParams/FailingParamTest.Fails/0
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1
+  GetParam()
+    Which is: 2
+Stack trace: (omitted)
+
+[  FAILED  ] PrintingFailingParams/FailingParamTest.Fails/0, where GetParam() = 2
+[----------] 1 test from EmptyBasenameParamInst
+[ RUN      ] EmptyBasenameParamInst.Passes/0
+[       OK ] EmptyBasenameParamInst.Passes/0
+[----------] 2 tests from PrintingStrings/ParamTest
+[ RUN      ] PrintingStrings/ParamTest.Success/a
+[       OK ] PrintingStrings/ParamTest.Success/a
+[ RUN      ] PrintingStrings/ParamTest.Failure/a
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  "b"
+  GetParam()
+    Which is: "a"
+Expected failure
+Stack trace: (omitted)
+
+[  FAILED  ] PrintingStrings/ParamTest.Failure/a, where GetParam() = "a"
+[----------] Global test environment tear-down
+BarEnvironment::TearDown() called.
+googletest-output-test_.cc:#: Failure
+Failed
+Expected non-fatal failure.
+Stack trace: (omitted)
+
+FooEnvironment::TearDown() called.
+googletest-output-test_.cc:#: Failure
+Failed
+Expected fatal failure.
+Stack trace: (omitted)
+
+[==========] 85 tests from 40 test suites ran.
+[  PASSED  ] 31 tests.
+[  FAILED  ] 54 tests, listed below:
+[  FAILED  ] NonfatalFailureTest.EscapesStringOperands
+[  FAILED  ] NonfatalFailureTest.DiffForLongStrings
+[  FAILED  ] FatalFailureTest.FatalFailureInSubroutine
+[  FAILED  ] FatalFailureTest.FatalFailureInNestedSubroutine
+[  FAILED  ] FatalFailureTest.NonfatalFailureInSubroutine
+[  FAILED  ] LoggingTest.InterleavingLoggingAndAssertions
+[  FAILED  ] SCOPED_TRACETest.AcceptedValues
+[  FAILED  ] SCOPED_TRACETest.ObeysScopes
+[  FAILED  ] SCOPED_TRACETest.WorksInLoop
+[  FAILED  ] SCOPED_TRACETest.WorksInSubroutine
+[  FAILED  ] SCOPED_TRACETest.CanBeNested
+[  FAILED  ] SCOPED_TRACETest.CanBeRepeated
+[  FAILED  ] SCOPED_TRACETest.WorksConcurrently
+[  FAILED  ] ScopedTraceTest.WithExplicitFileAndLine
+[  FAILED  ] NonFatalFailureInFixtureConstructorTest.FailureInConstructor
+[  FAILED  ] FatalFailureInFixtureConstructorTest.FailureInConstructor
+[  FAILED  ] NonFatalFailureInSetUpTest.FailureInSetUp
+[  FAILED  ] FatalFailureInSetUpTest.FailureInSetUp
+[  FAILED  ] AddFailureAtTest.MessageContainsSpecifiedFileAndLineNumber
+[  FAILED  ] GtestFailAtTest.MessageContainsSpecifiedFileAndLineNumber
+[  FAILED  ] MixedUpTestSuiteTest.ThisShouldFail
+[  FAILED  ] MixedUpTestSuiteTest.ThisShouldFailToo
+[  FAILED  ] MixedUpTestSuiteWithSameTestNameTest.TheSecondTestWithThisNameShouldFail
+[  FAILED  ] TEST_F_before_TEST_in_same_test_case.DefinedUsingTESTAndShouldFail
+[  FAILED  ] TEST_before_TEST_F_in_same_test_case.DefinedUsingTEST_FAndShouldFail
+[  FAILED  ] ExpectNonfatalFailureTest.FailsWhenThereIsNoNonfatalFailure
+[  FAILED  ] ExpectNonfatalFailureTest.FailsWhenThereAreTwoNonfatalFailures
+[  FAILED  ] ExpectNonfatalFailureTest.FailsWhenThereIsOneFatalFailure
+[  FAILED  ] ExpectNonfatalFailureTest.FailsWhenStatementReturns
+[  FAILED  ] ExpectNonfatalFailureTest.FailsWhenStatementThrows
+[  FAILED  ] ExpectFatalFailureTest.FailsWhenThereIsNoFatalFailure
+[  FAILED  ] ExpectFatalFailureTest.FailsWhenThereAreTwoFatalFailures
+[  FAILED  ] ExpectFatalFailureTest.FailsWhenThereIsOneNonfatalFailure
+[  FAILED  ] ExpectFatalFailureTest.FailsWhenStatementReturns
+[  FAILED  ] ExpectFatalFailureTest.FailsWhenStatementThrows
+[  FAILED  ] TypedTest/0.Failure, where TypeParam = int
+[  FAILED  ] TypedTestWithNames/char0.Failure, where TypeParam = char
+[  FAILED  ] TypedTestWithNames/int1.Failure, where TypeParam = int
+[  FAILED  ] Unsigned/TypedTestP/0.Failure, where TypeParam = unsigned char
+[  FAILED  ] Unsigned/TypedTestP/1.Failure, where TypeParam = unsigned int
+[  FAILED  ] UnsignedCustomName/TypedTestP/unsignedChar0.Failure, where TypeParam = unsigned char
+[  FAILED  ] UnsignedCustomName/TypedTestP/unsignedInt1.Failure, where TypeParam = unsigned int
+[  FAILED  ] ExpectFailureTest.ExpectFatalFailure
+[  FAILED  ] ExpectFailureTest.ExpectNonFatalFailure
+[  FAILED  ] ExpectFailureTest.ExpectFatalFailureOnAllThreads
+[  FAILED  ] ExpectFailureTest.ExpectNonFatalFailureOnAllThreads
+[  FAILED  ] ExpectFailureWithThreadsTest.ExpectFatalFailure
+[  FAILED  ] ExpectFailureWithThreadsTest.ExpectNonFatalFailure
+[  FAILED  ] ScopedFakeTestPartResultReporterTest.InterceptOnlyCurrentThread
+[  FAILED  ] DynamicFixture.DynamicTestFail
+[  FAILED  ] BadDynamicFixture1.TestBase
+[  FAILED  ] BadDynamicFixture2.Derived
+[  FAILED  ] PrintingFailingParams/FailingParamTest.Fails/0, where GetParam() = 2
+[  FAILED  ] PrintingStrings/ParamTest.Failure/a, where GetParam() = "a"
+
+54 FAILED TESTS
+  YOU HAVE 1 DISABLED TEST
+
+Note: Google Test filter = FatalFailureTest.*:LoggingTest.*
+[==========] Running 4 tests from 2 test suites.
+[----------] Global test environment set-up.
+[----------] 3 tests from FatalFailureTest
+[ RUN      ] FatalFailureTest.FatalFailureInSubroutine
+(expecting a failure that x should be 1)
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1
+  x
+    Which is: 2
+Stack trace: (omitted)
+
+[  FAILED  ] FatalFailureTest.FatalFailureInSubroutine (? ms)
+[ RUN      ] FatalFailureTest.FatalFailureInNestedSubroutine
+(expecting a failure that x should be 1)
+googletest-output-test_.cc:#: Failure
+Expected equality of these values:
+  1
+  x
+    Which is: 2
+Stack trace: (omitted)
+
+[  FAILED  ] FatalFailureTest.FatalFailureInNestedSubroutine (? ms)
+[ RUN      ] FatalFailureTest.NonfatalFailureInSubroutine
+(expecting a failure on false)
+googletest-output-test_.cc:#: Failure
+Value of: false
+  Actual: false
+Expected: true
+Stack trace: (omitted)
+
+[  FAILED  ] FatalFailureTest.NonfatalFailureInSubroutine (? ms)
+[----------] 3 tests from FatalFailureTest (? ms total)
+
+[----------] 1 test from LoggingTest
+[ RUN      ] LoggingTest.InterleavingLoggingAndAssertions
+(expecting 2 failures on (3) >= (a[i]))
+i == 0
+i == 1
+googletest-output-test_.cc:#: Failure
+Expected: (3) >= (a[i]), actual: 3 vs 9
+Stack trace: (omitted)
+
+i == 2
+i == 3
+googletest-output-test_.cc:#: Failure
+Expected: (3) >= (a[i]), actual: 3 vs 6
+Stack trace: (omitted)
+
+[  FAILED  ] LoggingTest.InterleavingLoggingAndAssertions (? ms)
+[----------] 1 test from LoggingTest (? ms total)
+
+[----------] Global test environment tear-down
+[==========] 4 tests from 2 test suites ran. (? ms total)
+[  PASSED  ] 0 tests.
+[  FAILED  ] 4 tests, listed below:
+[  FAILED  ] FatalFailureTest.FatalFailureInSubroutine
+[  FAILED  ] FatalFailureTest.FatalFailureInNestedSubroutine
+[  FAILED  ] FatalFailureTest.NonfatalFailureInSubroutine
+[  FAILED  ] LoggingTest.InterleavingLoggingAndAssertions
+
+ 4 FAILED TESTS
+Note: Google Test filter = *DISABLED_*
+[==========] Running 1 test from 1 test suite.
+[----------] Global test environment set-up.
+[----------] 1 test from DisabledTestsWarningTest
+[ RUN      ] DisabledTestsWarningTest.DISABLED_AlsoRunDisabledTestsFlagSuppressesWarning
+[       OK ] DisabledTestsWarningTest.DISABLED_AlsoRunDisabledTestsFlagSuppressesWarning
+[----------] Global test environment tear-down
+[==========] 1 test from 1 test suite ran.
+[  PASSED  ] 1 test.
+Note: Google Test filter = PassingTest.*
+Note: This is test shard 2 of 2.
+[==========] Running 1 test from 1 test suite.
+[----------] Global test environment set-up.
+[----------] 1 test from PassingTest
+[ RUN      ] PassingTest.PassingTest2
+[       OK ] PassingTest.PassingTest2
+[----------] Global test environment tear-down
+[==========] 1 test from 1 test suite ran.
+[  PASSED  ] 1 test.
diff --git a/build/_deps/googletest-src/googletest/test/googletest-output-test.py b/build/_deps/googletest-src/googletest/test/googletest-output-test.py
new file mode 100755
index 0000000000000000000000000000000000000000..c727f17a4963a96995e5c75335e1c3c4a09d4d84
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-output-test.py
@@ -0,0 +1,346 @@
+#!/usr/bin/env python
+#
+# Copyright 2008, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Tests the text output of Google C++ Testing and Mocking Framework.
+
+To update the golden file:
+googletest_output_test.py --build_dir=BUILD/DIR --gengolden
+where BUILD/DIR contains the built googletest-output-test_ file.
+googletest_output_test.py --gengolden
+googletest_output_test.py
+"""
+
+import difflib
+import os
+import re
+import sys
+import gtest_test_utils
+
+
+# The flag for generating the golden file
+GENGOLDEN_FLAG = '--gengolden'
+CATCH_EXCEPTIONS_ENV_VAR_NAME = 'GTEST_CATCH_EXCEPTIONS'
+
+# The flag indicating stacktraces are not supported
+NO_STACKTRACE_SUPPORT_FLAG = '--no_stacktrace_support'
+
+IS_LINUX = os.name == 'posix' and os.uname()[0] == 'Linux'
+IS_WINDOWS = os.name == 'nt'
+
+GOLDEN_NAME = 'googletest-output-test-golden-lin.txt'
+
+PROGRAM_PATH = gtest_test_utils.GetTestExecutablePath('googletest-output-test_')
+
+# At least one command we exercise must not have the
+# 'internal_skip_environment_and_ad_hoc_tests' argument.
+COMMAND_LIST_TESTS = ({}, [PROGRAM_PATH, '--gtest_list_tests'])
+COMMAND_WITH_COLOR = ({}, [PROGRAM_PATH, '--gtest_color=yes'])
+COMMAND_WITH_TIME = ({}, [PROGRAM_PATH,
+                          '--gtest_print_time',
+                          'internal_skip_environment_and_ad_hoc_tests',
+                          '--gtest_filter=FatalFailureTest.*:LoggingTest.*'])
+COMMAND_WITH_DISABLED = (
+    {}, [PROGRAM_PATH,
+         '--gtest_also_run_disabled_tests',
+         'internal_skip_environment_and_ad_hoc_tests',
+         '--gtest_filter=*DISABLED_*'])
+COMMAND_WITH_SHARDING = (
+    {'GTEST_SHARD_INDEX': '1', 'GTEST_TOTAL_SHARDS': '2'},
+    [PROGRAM_PATH,
+     'internal_skip_environment_and_ad_hoc_tests',
+     '--gtest_filter=PassingTest.*'])
+
+GOLDEN_PATH = os.path.join(gtest_test_utils.GetSourceDir(), GOLDEN_NAME)
+
+
+def ToUnixLineEnding(s):
+  """Changes all Windows/Mac line endings in s to UNIX line endings."""
+
+  return s.replace('\r\n', '\n').replace('\r', '\n')
+
+
+def RemoveLocations(test_output):
+  """Removes all file location info from a Google Test program's output.
+
+  Args:
+       test_output:  the output of a Google Test program.
+
+  Returns:
+       output with all file location info (in the form of
+       'DIRECTORY/FILE_NAME:LINE_NUMBER: 'or
+       'DIRECTORY\\FILE_NAME(LINE_NUMBER): ') replaced by
+       'FILE_NAME:#: '.
+  """
+
+  return re.sub(r'.*[/\\]((googletest-output-test_|gtest).cc)(\:\d+|\(\d+\))\: ',
+                r'\1:#: ', test_output)
+
+
+def RemoveStackTraceDetails(output):
+  """Removes all stack traces from a Google Test program's output."""
+
+  # *? means "find the shortest string that matches".
+  return re.sub(r'Stack trace:(.|\n)*?\n\n',
+                'Stack trace: (omitted)\n\n', output)
+
+
+def RemoveStackTraces(output):
+  """Removes all traces of stack traces from a Google Test program's output."""
+
+  # *? means "find the shortest string that matches".
+  return re.sub(r'Stack trace:(.|\n)*?\n\n', '', output)
+
+
+def RemoveTime(output):
+  """Removes all time information from a Google Test program's output."""
+
+  return re.sub(r'\(\d+ ms', '(? ms', output)
+
+
+def RemoveTypeInfoDetails(test_output):
+  """Removes compiler-specific type info from Google Test program's output.
+
+  Args:
+       test_output:  the output of a Google Test program.
+
+  Returns:
+       output with type information normalized to canonical form.
+  """
+
+  # some compilers output the name of type 'unsigned int' as 'unsigned'
+  return re.sub(r'unsigned int', 'unsigned', test_output)
+
+
+def NormalizeToCurrentPlatform(test_output):
+  """Normalizes platform specific output details for easier comparison."""
+
+  if IS_WINDOWS:
+    # Removes the color information that is not present on Windows.
+    test_output = re.sub('\x1b\\[(0;3\d)?m', '', test_output)
+    # Changes failure message headers into the Windows format.
+    test_output = re.sub(r': Failure\n', r': error: ', test_output)
+    # Changes file(line_number) to file:line_number.
+    test_output = re.sub(r'((\w|\.)+)\((\d+)\):', r'\1:\3:', test_output)
+
+  return test_output
+
+
+def RemoveTestCounts(output):
+  """Removes test counts from a Google Test program's output."""
+
+  output = re.sub(r'\d+ tests?, listed below',
+                  '? tests, listed below', output)
+  output = re.sub(r'\d+ FAILED TESTS',
+                  '? FAILED TESTS', output)
+  output = re.sub(r'\d+ tests? from \d+ test cases?',
+                  '? tests from ? test cases', output)
+  output = re.sub(r'\d+ tests? from ([a-zA-Z_])',
+                  r'? tests from \1', output)
+  return re.sub(r'\d+ tests?\.', '? tests.', output)
+
+
+def RemoveMatchingTests(test_output, pattern):
+  """Removes output of specified tests from a Google Test program's output.
+
+  This function strips not only the beginning and the end of a test but also
+  all output in between.
+
+  Args:
+    test_output:       A string containing the test output.
+    pattern:           A regex string that matches names of test cases or
+                       tests to remove.
+
+  Returns:
+    Contents of test_output with tests whose names match pattern removed.
+  """
+
+  test_output = re.sub(
+      r'.*\[ RUN      \] .*%s(.|\n)*?\[(  FAILED  |       OK )\] .*%s.*\n' % (
+          pattern, pattern),
+      '',
+      test_output)
+  return re.sub(r'.*%s.*\n' % pattern, '', test_output)
+
+
+def NormalizeOutput(output):
+  """Normalizes output (the output of googletest-output-test_.exe)."""
+
+  output = ToUnixLineEnding(output)
+  output = RemoveLocations(output)
+  output = RemoveStackTraceDetails(output)
+  output = RemoveTime(output)
+  return output
+
+
+def GetShellCommandOutput(env_cmd):
+  """Runs a command in a sub-process, and returns its output in a string.
+
+  Args:
+    env_cmd: The shell command. A 2-tuple where element 0 is a dict of extra
+             environment variables to set, and element 1 is a string with
+             the command and any flags.
+
+  Returns:
+    A string with the command's combined standard and diagnostic output.
+  """
+
+  # Spawns cmd in a sub-process, and gets its standard I/O file objects.
+  # Set and save the environment properly.
+  environ = os.environ.copy()
+  environ.update(env_cmd[0])
+  p = gtest_test_utils.Subprocess(env_cmd[1], env=environ)
+
+  return p.output
+
+
+def GetCommandOutput(env_cmd):
+  """Runs a command and returns its output with all file location
+  info stripped off.
+
+  Args:
+    env_cmd:  The shell command. A 2-tuple where element 0 is a dict of extra
+              environment variables to set, and element 1 is a string with
+              the command and any flags.
+  """
+
+  # Disables exception pop-ups on Windows.
+  environ, cmdline = env_cmd
+  environ = dict(environ)  # Ensures we are modifying a copy.
+  environ[CATCH_EXCEPTIONS_ENV_VAR_NAME] = '1'
+  return NormalizeOutput(GetShellCommandOutput((environ, cmdline)))
+
+
+def GetOutputOfAllCommands():
+  """Returns concatenated output from several representative commands."""
+
+  return (GetCommandOutput(COMMAND_WITH_COLOR) +
+          GetCommandOutput(COMMAND_WITH_TIME) +
+          GetCommandOutput(COMMAND_WITH_DISABLED) +
+          GetCommandOutput(COMMAND_WITH_SHARDING))
+
+
+test_list = GetShellCommandOutput(COMMAND_LIST_TESTS)
+SUPPORTS_DEATH_TESTS = 'DeathTest' in test_list
+SUPPORTS_TYPED_TESTS = 'TypedTest' in test_list
+SUPPORTS_THREADS = 'ExpectFailureWithThreadsTest' in test_list
+SUPPORTS_STACK_TRACES = NO_STACKTRACE_SUPPORT_FLAG not in sys.argv
+
+CAN_GENERATE_GOLDEN_FILE = (SUPPORTS_DEATH_TESTS and
+                            SUPPORTS_TYPED_TESTS and
+                            SUPPORTS_THREADS and
+                            SUPPORTS_STACK_TRACES)
+
+class GTestOutputTest(gtest_test_utils.TestCase):
+  def RemoveUnsupportedTests(self, test_output):
+    if not SUPPORTS_DEATH_TESTS:
+      test_output = RemoveMatchingTests(test_output, 'DeathTest')
+    if not SUPPORTS_TYPED_TESTS:
+      test_output = RemoveMatchingTests(test_output, 'TypedTest')
+      test_output = RemoveMatchingTests(test_output, 'TypedDeathTest')
+      test_output = RemoveMatchingTests(test_output, 'TypeParamDeathTest')
+    if not SUPPORTS_THREADS:
+      test_output = RemoveMatchingTests(test_output,
+                                        'ExpectFailureWithThreadsTest')
+      test_output = RemoveMatchingTests(test_output,
+                                        'ScopedFakeTestPartResultReporterTest')
+      test_output = RemoveMatchingTests(test_output,
+                                        'WorksConcurrently')
+    if not SUPPORTS_STACK_TRACES:
+      test_output = RemoveStackTraces(test_output)
+
+    return test_output
+
+  def testOutput(self):
+    output = GetOutputOfAllCommands()
+
+    golden_file = open(GOLDEN_PATH, 'rb')
+    # A mis-configured source control system can cause \r appear in EOL
+    # sequences when we read the golden file irrespective of an operating
+    # system used. Therefore, we need to strip those \r's from newlines
+    # unconditionally.
+    golden = ToUnixLineEnding(golden_file.read().decode())
+    golden_file.close()
+
+    # We want the test to pass regardless of certain features being
+    # supported or not.
+
+    # We still have to remove type name specifics in all cases.
+    normalized_actual = RemoveTypeInfoDetails(output)
+    normalized_golden = RemoveTypeInfoDetails(golden)
+
+    if CAN_GENERATE_GOLDEN_FILE:
+      self.assertEqual(normalized_golden, normalized_actual,
+                       '\n'.join(difflib.unified_diff(
+                           normalized_golden.split('\n'),
+                           normalized_actual.split('\n'),
+                           'golden', 'actual')))
+    else:
+      normalized_actual = NormalizeToCurrentPlatform(
+          RemoveTestCounts(normalized_actual))
+      normalized_golden = NormalizeToCurrentPlatform(
+          RemoveTestCounts(self.RemoveUnsupportedTests(normalized_golden)))
+
+      # This code is very handy when debugging golden file differences:
+      if os.getenv('DEBUG_GTEST_OUTPUT_TEST'):
+        open(os.path.join(
+            gtest_test_utils.GetSourceDir(),
+            '_googletest-output-test_normalized_actual.txt'), 'wb').write(
+                normalized_actual)
+        open(os.path.join(
+            gtest_test_utils.GetSourceDir(),
+            '_googletest-output-test_normalized_golden.txt'), 'wb').write(
+                normalized_golden)
+
+      self.assertEqual(normalized_golden, normalized_actual)
+
+
+if __name__ == '__main__':
+  if NO_STACKTRACE_SUPPORT_FLAG in sys.argv:
+    # unittest.main() can't handle unknown flags
+    sys.argv.remove(NO_STACKTRACE_SUPPORT_FLAG)
+
+  if GENGOLDEN_FLAG in sys.argv:
+    if CAN_GENERATE_GOLDEN_FILE:
+      output = GetOutputOfAllCommands()
+      golden_file = open(GOLDEN_PATH, 'wb')
+      golden_file.write(output)
+      golden_file.close()
+    else:
+      message = (
+          """Unable to write a golden file when compiled in an environment
+that does not support all the required features (death tests,
+typed tests, stack traces, and multiple threads).
+Please build this test and generate the golden file using Blaze on Linux.""")
+
+      sys.stderr.write(message)
+      sys.exit(1)
+  else:
+    gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-output-test_.cc b/build/_deps/googletest-src/googletest/test/googletest-output-test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4f716d843b125cbf6f93d1a9592077a058fff1c4
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-output-test_.cc
@@ -0,0 +1,1157 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// The purpose of this file is to generate Google Test output under
+// various conditions.  The output will then be verified by
+// googletest-output-test.py to ensure that Google Test generates the
+// desired messages.  Therefore, most tests in this file are MEANT TO
+// FAIL.
+
+#include "gtest/gtest-spi.h"
+#include "gtest/gtest.h"
+#include "src/gtest-internal-inl.h"
+
+#include <stdlib.h>
+
+#if _MSC_VER
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4127 /* conditional expression is constant */)
+#endif  //  _MSC_VER
+
+#if GTEST_IS_THREADSAFE
+using testing::ScopedFakeTestPartResultReporter;
+using testing::TestPartResultArray;
+
+using testing::internal::Notification;
+using testing::internal::ThreadWithParam;
+#endif
+
+namespace posix = ::testing::internal::posix;
+
+// Tests catching fatal failures.
+
+// A subroutine used by the following test.
+void TestEq1(int x) {
+  ASSERT_EQ(1, x);
+}
+
+// This function calls a test subroutine, catches the fatal failure it
+// generates, and then returns early.
+void TryTestSubroutine() {
+  // Calls a subrountine that yields a fatal failure.
+  TestEq1(2);
+
+  // Catches the fatal failure and aborts the test.
+  //
+  // The testing::Test:: prefix is necessary when calling
+  // HasFatalFailure() outside of a TEST, TEST_F, or test fixture.
+  if (testing::Test::HasFatalFailure()) return;
+
+  // If we get here, something is wrong.
+  FAIL() << "This should never be reached.";
+}
+
+TEST(PassingTest, PassingTest1) {
+}
+
+TEST(PassingTest, PassingTest2) {
+}
+
+// Tests that parameters of failing parameterized tests are printed in the
+// failing test summary.
+class FailingParamTest : public testing::TestWithParam<int> {};
+
+TEST_P(FailingParamTest, Fails) {
+  EXPECT_EQ(1, GetParam());
+}
+
+// This generates a test which will fail. Google Test is expected to print
+// its parameter when it outputs the list of all failed tests.
+INSTANTIATE_TEST_SUITE_P(PrintingFailingParams,
+                         FailingParamTest,
+                         testing::Values(2));
+
+// Tests that an empty value for the test suite basename yields just
+// the test name without any prior /
+class EmptyBasenameParamInst : public testing::TestWithParam<int> {};
+
+TEST_P(EmptyBasenameParamInst, Passes) { EXPECT_EQ(1, GetParam()); }
+
+INSTANTIATE_TEST_SUITE_P(, EmptyBasenameParamInst, testing::Values(1));
+
+static const char kGoldenString[] = "\"Line\0 1\"\nLine 2";
+
+TEST(NonfatalFailureTest, EscapesStringOperands) {
+  std::string actual = "actual \"string\"";
+  EXPECT_EQ(kGoldenString, actual);
+
+  const char* golden = kGoldenString;
+  EXPECT_EQ(golden, actual);
+}
+
+TEST(NonfatalFailureTest, DiffForLongStrings) {
+  std::string golden_str(kGoldenString, sizeof(kGoldenString) - 1);
+  EXPECT_EQ(golden_str, "Line 2");
+}
+
+// Tests catching a fatal failure in a subroutine.
+TEST(FatalFailureTest, FatalFailureInSubroutine) {
+  printf("(expecting a failure that x should be 1)\n");
+
+  TryTestSubroutine();
+}
+
+// Tests catching a fatal failure in a nested subroutine.
+TEST(FatalFailureTest, FatalFailureInNestedSubroutine) {
+  printf("(expecting a failure that x should be 1)\n");
+
+  // Calls a subrountine that yields a fatal failure.
+  TryTestSubroutine();
+
+  // Catches the fatal failure and aborts the test.
+  //
+  // When calling HasFatalFailure() inside a TEST, TEST_F, or test
+  // fixture, the testing::Test:: prefix is not needed.
+  if (HasFatalFailure()) return;
+
+  // If we get here, something is wrong.
+  FAIL() << "This should never be reached.";
+}
+
+// Tests HasFatalFailure() after a failed EXPECT check.
+TEST(FatalFailureTest, NonfatalFailureInSubroutine) {
+  printf("(expecting a failure on false)\n");
+  EXPECT_TRUE(false);  // Generates a nonfatal failure
+  ASSERT_FALSE(HasFatalFailure());  // This should succeed.
+}
+
+// Tests interleaving user logging and Google Test assertions.
+TEST(LoggingTest, InterleavingLoggingAndAssertions) {
+  static const int a[4] = {
+    3, 9, 2, 6
+  };
+
+  printf("(expecting 2 failures on (3) >= (a[i]))\n");
+  for (int i = 0; i < static_cast<int>(sizeof(a)/sizeof(*a)); i++) {
+    printf("i == %d\n", i);
+    EXPECT_GE(3, a[i]);
+  }
+}
+
+// Tests the SCOPED_TRACE macro.
+
+// A helper function for testing SCOPED_TRACE.
+void SubWithoutTrace(int n) {
+  EXPECT_EQ(1, n);
+  ASSERT_EQ(2, n);
+}
+
+// Another helper function for testing SCOPED_TRACE.
+void SubWithTrace(int n) {
+  SCOPED_TRACE(testing::Message() << "n = " << n);
+
+  SubWithoutTrace(n);
+}
+
+TEST(SCOPED_TRACETest, AcceptedValues) {
+  SCOPED_TRACE("literal string");
+  SCOPED_TRACE(std::string("std::string"));
+  SCOPED_TRACE(1337);  // streamable type
+  const char* null_value = nullptr;
+  SCOPED_TRACE(null_value);
+
+  ADD_FAILURE() << "Just checking that all these values work fine.";
+}
+
+// Tests that SCOPED_TRACE() obeys lexical scopes.
+TEST(SCOPED_TRACETest, ObeysScopes) {
+  printf("(expected to fail)\n");
+
+  // There should be no trace before SCOPED_TRACE() is invoked.
+  ADD_FAILURE() << "This failure is expected, and shouldn't have a trace.";
+
+  {
+    SCOPED_TRACE("Expected trace");
+    // After SCOPED_TRACE(), a failure in the current scope should contain
+    // the trace.
+    ADD_FAILURE() << "This failure is expected, and should have a trace.";
+  }
+
+  // Once the control leaves the scope of the SCOPED_TRACE(), there
+  // should be no trace again.
+  ADD_FAILURE() << "This failure is expected, and shouldn't have a trace.";
+}
+
+// Tests that SCOPED_TRACE works inside a loop.
+TEST(SCOPED_TRACETest, WorksInLoop) {
+  printf("(expected to fail)\n");
+
+  for (int i = 1; i <= 2; i++) {
+    SCOPED_TRACE(testing::Message() << "i = " << i);
+
+    SubWithoutTrace(i);
+  }
+}
+
+// Tests that SCOPED_TRACE works in a subroutine.
+TEST(SCOPED_TRACETest, WorksInSubroutine) {
+  printf("(expected to fail)\n");
+
+  SubWithTrace(1);
+  SubWithTrace(2);
+}
+
+// Tests that SCOPED_TRACE can be nested.
+TEST(SCOPED_TRACETest, CanBeNested) {
+  printf("(expected to fail)\n");
+
+  SCOPED_TRACE("");  // A trace without a message.
+
+  SubWithTrace(2);
+}
+
+// Tests that multiple SCOPED_TRACEs can be used in the same scope.
+TEST(SCOPED_TRACETest, CanBeRepeated) {
+  printf("(expected to fail)\n");
+
+  SCOPED_TRACE("A");
+  ADD_FAILURE()
+      << "This failure is expected, and should contain trace point A.";
+
+  SCOPED_TRACE("B");
+  ADD_FAILURE()
+      << "This failure is expected, and should contain trace point A and B.";
+
+  {
+    SCOPED_TRACE("C");
+    ADD_FAILURE() << "This failure is expected, and should "
+                  << "contain trace point A, B, and C.";
+  }
+
+  SCOPED_TRACE("D");
+  ADD_FAILURE() << "This failure is expected, and should "
+                << "contain trace point A, B, and D.";
+}
+
+#if GTEST_IS_THREADSAFE
+// Tests that SCOPED_TRACE()s can be used concurrently from multiple
+// threads.  Namely, an assertion should be affected by
+// SCOPED_TRACE()s in its own thread only.
+
+// Here's the sequence of actions that happen in the test:
+//
+//   Thread A (main)                | Thread B (spawned)
+//   ===============================|================================
+//   spawns thread B                |
+//   -------------------------------+--------------------------------
+//   waits for n1                   | SCOPED_TRACE("Trace B");
+//                                  | generates failure #1
+//                                  | notifies n1
+//   -------------------------------+--------------------------------
+//   SCOPED_TRACE("Trace A");       | waits for n2
+//   generates failure #2           |
+//   notifies n2                    |
+//   -------------------------------|--------------------------------
+//   waits for n3                   | generates failure #3
+//                                  | trace B dies
+//                                  | generates failure #4
+//                                  | notifies n3
+//   -------------------------------|--------------------------------
+//   generates failure #5           | finishes
+//   trace A dies                   |
+//   generates failure #6           |
+//   -------------------------------|--------------------------------
+//   waits for thread B to finish   |
+
+struct CheckPoints {
+  Notification n1;
+  Notification n2;
+  Notification n3;
+};
+
+static void ThreadWithScopedTrace(CheckPoints* check_points) {
+  {
+    SCOPED_TRACE("Trace B");
+    ADD_FAILURE()
+        << "Expected failure #1 (in thread B, only trace B alive).";
+    check_points->n1.Notify();
+    check_points->n2.WaitForNotification();
+
+    ADD_FAILURE()
+        << "Expected failure #3 (in thread B, trace A & B both alive).";
+  }  // Trace B dies here.
+  ADD_FAILURE()
+      << "Expected failure #4 (in thread B, only trace A alive).";
+  check_points->n3.Notify();
+}
+
+TEST(SCOPED_TRACETest, WorksConcurrently) {
+  printf("(expecting 6 failures)\n");
+
+  CheckPoints check_points;
+  ThreadWithParam<CheckPoints*> thread(&ThreadWithScopedTrace, &check_points,
+                                       nullptr);
+  check_points.n1.WaitForNotification();
+
+  {
+    SCOPED_TRACE("Trace A");
+    ADD_FAILURE()
+        << "Expected failure #2 (in thread A, trace A & B both alive).";
+    check_points.n2.Notify();
+    check_points.n3.WaitForNotification();
+
+    ADD_FAILURE()
+        << "Expected failure #5 (in thread A, only trace A alive).";
+  }  // Trace A dies here.
+  ADD_FAILURE()
+      << "Expected failure #6 (in thread A, no trace alive).";
+  thread.Join();
+}
+#endif  // GTEST_IS_THREADSAFE
+
+// Tests basic functionality of the ScopedTrace utility (most of its features
+// are already tested in SCOPED_TRACETest).
+TEST(ScopedTraceTest, WithExplicitFileAndLine) {
+  testing::ScopedTrace trace("explicit_file.cc", 123, "expected trace message");
+  ADD_FAILURE() << "Check that the trace is attached to a particular location.";
+}
+
+TEST(DisabledTestsWarningTest,
+     DISABLED_AlsoRunDisabledTestsFlagSuppressesWarning) {
+  // This test body is intentionally empty.  Its sole purpose is for
+  // verifying that the --gtest_also_run_disabled_tests flag
+  // suppresses the "YOU HAVE 12 DISABLED TESTS" warning at the end of
+  // the test output.
+}
+
+// Tests using assertions outside of TEST and TEST_F.
+//
+// This function creates two failures intentionally.
+void AdHocTest() {
+  printf("The non-test part of the code is expected to have 2 failures.\n\n");
+  EXPECT_TRUE(false);
+  EXPECT_EQ(2, 3);
+}
+
+// Runs all TESTs, all TEST_Fs, and the ad hoc test.
+int RunAllTests() {
+  AdHocTest();
+  return RUN_ALL_TESTS();
+}
+
+// Tests non-fatal failures in the fixture constructor.
+class NonFatalFailureInFixtureConstructorTest : public testing::Test {
+ protected:
+  NonFatalFailureInFixtureConstructorTest() {
+    printf("(expecting 5 failures)\n");
+    ADD_FAILURE() << "Expected failure #1, in the test fixture c'tor.";
+  }
+
+  ~NonFatalFailureInFixtureConstructorTest() override {
+    ADD_FAILURE() << "Expected failure #5, in the test fixture d'tor.";
+  }
+
+  void SetUp() override { ADD_FAILURE() << "Expected failure #2, in SetUp()."; }
+
+  void TearDown() override {
+    ADD_FAILURE() << "Expected failure #4, in TearDown.";
+  }
+};
+
+TEST_F(NonFatalFailureInFixtureConstructorTest, FailureInConstructor) {
+  ADD_FAILURE() << "Expected failure #3, in the test body.";
+}
+
+// Tests fatal failures in the fixture constructor.
+class FatalFailureInFixtureConstructorTest : public testing::Test {
+ protected:
+  FatalFailureInFixtureConstructorTest() {
+    printf("(expecting 2 failures)\n");
+    Init();
+  }
+
+  ~FatalFailureInFixtureConstructorTest() override {
+    ADD_FAILURE() << "Expected failure #2, in the test fixture d'tor.";
+  }
+
+  void SetUp() override {
+    ADD_FAILURE() << "UNEXPECTED failure in SetUp().  "
+                  << "We should never get here, as the test fixture c'tor "
+                  << "had a fatal failure.";
+  }
+
+  void TearDown() override {
+    ADD_FAILURE() << "UNEXPECTED failure in TearDown().  "
+                  << "We should never get here, as the test fixture c'tor "
+                  << "had a fatal failure.";
+  }
+
+ private:
+  void Init() {
+    FAIL() << "Expected failure #1, in the test fixture c'tor.";
+  }
+};
+
+TEST_F(FatalFailureInFixtureConstructorTest, FailureInConstructor) {
+  ADD_FAILURE() << "UNEXPECTED failure in the test body.  "
+                << "We should never get here, as the test fixture c'tor "
+                << "had a fatal failure.";
+}
+
+// Tests non-fatal failures in SetUp().
+class NonFatalFailureInSetUpTest : public testing::Test {
+ protected:
+  ~NonFatalFailureInSetUpTest() override { Deinit(); }
+
+  void SetUp() override {
+    printf("(expecting 4 failures)\n");
+    ADD_FAILURE() << "Expected failure #1, in SetUp().";
+  }
+
+  void TearDown() override { FAIL() << "Expected failure #3, in TearDown()."; }
+
+ private:
+  void Deinit() {
+    FAIL() << "Expected failure #4, in the test fixture d'tor.";
+  }
+};
+
+TEST_F(NonFatalFailureInSetUpTest, FailureInSetUp) {
+  FAIL() << "Expected failure #2, in the test function.";
+}
+
+// Tests fatal failures in SetUp().
+class FatalFailureInSetUpTest : public testing::Test {
+ protected:
+  ~FatalFailureInSetUpTest() override { Deinit(); }
+
+  void SetUp() override {
+    printf("(expecting 3 failures)\n");
+    FAIL() << "Expected failure #1, in SetUp().";
+  }
+
+  void TearDown() override { FAIL() << "Expected failure #2, in TearDown()."; }
+
+ private:
+  void Deinit() {
+    FAIL() << "Expected failure #3, in the test fixture d'tor.";
+  }
+};
+
+TEST_F(FatalFailureInSetUpTest, FailureInSetUp) {
+  FAIL() << "UNEXPECTED failure in the test function.  "
+         << "We should never get here, as SetUp() failed.";
+}
+
+TEST(AddFailureAtTest, MessageContainsSpecifiedFileAndLineNumber) {
+  ADD_FAILURE_AT("foo.cc", 42) << "Expected nonfatal failure in foo.cc";
+}
+
+TEST(GtestFailAtTest, MessageContainsSpecifiedFileAndLineNumber) {
+  GTEST_FAIL_AT("foo.cc", 42) << "Expected fatal failure in foo.cc";
+}
+
+#if GTEST_IS_THREADSAFE
+
+// A unary function that may die.
+void DieIf(bool should_die) {
+  GTEST_CHECK_(!should_die) << " - death inside DieIf().";
+}
+
+// Tests running death tests in a multi-threaded context.
+
+// Used for coordination between the main and the spawn thread.
+struct SpawnThreadNotifications {
+  SpawnThreadNotifications() {}
+
+  Notification spawn_thread_started;
+  Notification spawn_thread_ok_to_terminate;
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(SpawnThreadNotifications);
+};
+
+// The function to be executed in the thread spawn by the
+// MultipleThreads test (below).
+static void ThreadRoutine(SpawnThreadNotifications* notifications) {
+  // Signals the main thread that this thread has started.
+  notifications->spawn_thread_started.Notify();
+
+  // Waits for permission to finish from the main thread.
+  notifications->spawn_thread_ok_to_terminate.WaitForNotification();
+}
+
+// This is a death-test test, but it's not named with a DeathTest
+// suffix.  It starts threads which might interfere with later
+// death tests, so it must run after all other death tests.
+class DeathTestAndMultiThreadsTest : public testing::Test {
+ protected:
+  // Starts a thread and waits for it to begin.
+  void SetUp() override {
+    thread_.reset(new ThreadWithParam<SpawnThreadNotifications*>(
+        &ThreadRoutine, &notifications_, nullptr));
+    notifications_.spawn_thread_started.WaitForNotification();
+  }
+  // Tells the thread to finish, and reaps it.
+  // Depending on the version of the thread library in use,
+  // a manager thread might still be left running that will interfere
+  // with later death tests.  This is unfortunate, but this class
+  // cleans up after itself as best it can.
+  void TearDown() override {
+    notifications_.spawn_thread_ok_to_terminate.Notify();
+  }
+
+ private:
+  SpawnThreadNotifications notifications_;
+  std::unique_ptr<ThreadWithParam<SpawnThreadNotifications*> > thread_;
+};
+
+#endif  // GTEST_IS_THREADSAFE
+
+// The MixedUpTestSuiteTest test case verifies that Google Test will fail a
+// test if it uses a different fixture class than what other tests in
+// the same test case use.  It deliberately contains two fixture
+// classes with the same name but defined in different namespaces.
+
+// The MixedUpTestSuiteWithSameTestNameTest test case verifies that
+// when the user defines two tests with the same test case name AND
+// same test name (but in different namespaces), the second test will
+// fail.
+
+namespace foo {
+
+class MixedUpTestSuiteTest : public testing::Test {
+};
+
+TEST_F(MixedUpTestSuiteTest, FirstTestFromNamespaceFoo) {}
+TEST_F(MixedUpTestSuiteTest, SecondTestFromNamespaceFoo) {}
+
+class MixedUpTestSuiteWithSameTestNameTest : public testing::Test {
+};
+
+TEST_F(MixedUpTestSuiteWithSameTestNameTest,
+       TheSecondTestWithThisNameShouldFail) {}
+
+}  // namespace foo
+
+namespace bar {
+
+class MixedUpTestSuiteTest : public testing::Test {
+};
+
+// The following two tests are expected to fail.  We rely on the
+// golden file to check that Google Test generates the right error message.
+TEST_F(MixedUpTestSuiteTest, ThisShouldFail) {}
+TEST_F(MixedUpTestSuiteTest, ThisShouldFailToo) {}
+
+class MixedUpTestSuiteWithSameTestNameTest : public testing::Test {
+};
+
+// Expected to fail.  We rely on the golden file to check that Google Test
+// generates the right error message.
+TEST_F(MixedUpTestSuiteWithSameTestNameTest,
+       TheSecondTestWithThisNameShouldFail) {}
+
+}  // namespace bar
+
+// The following two test cases verify that Google Test catches the user
+// error of mixing TEST and TEST_F in the same test case.  The first
+// test case checks the scenario where TEST_F appears before TEST, and
+// the second one checks where TEST appears before TEST_F.
+
+class TEST_F_before_TEST_in_same_test_case : public testing::Test {
+};
+
+TEST_F(TEST_F_before_TEST_in_same_test_case, DefinedUsingTEST_F) {}
+
+// Expected to fail.  We rely on the golden file to check that Google Test
+// generates the right error message.
+TEST(TEST_F_before_TEST_in_same_test_case, DefinedUsingTESTAndShouldFail) {}
+
+class TEST_before_TEST_F_in_same_test_case : public testing::Test {
+};
+
+TEST(TEST_before_TEST_F_in_same_test_case, DefinedUsingTEST) {}
+
+// Expected to fail.  We rely on the golden file to check that Google Test
+// generates the right error message.
+TEST_F(TEST_before_TEST_F_in_same_test_case, DefinedUsingTEST_FAndShouldFail) {
+}
+
+// Used for testing EXPECT_NONFATAL_FAILURE() and EXPECT_FATAL_FAILURE().
+int global_integer = 0;
+
+// Tests that EXPECT_NONFATAL_FAILURE() can reference global variables.
+TEST(ExpectNonfatalFailureTest, CanReferenceGlobalVariables) {
+  global_integer = 0;
+  EXPECT_NONFATAL_FAILURE({
+    EXPECT_EQ(1, global_integer) << "Expected non-fatal failure.";
+  }, "Expected non-fatal failure.");
+}
+
+// Tests that EXPECT_NONFATAL_FAILURE() can reference local variables
+// (static or not).
+TEST(ExpectNonfatalFailureTest, CanReferenceLocalVariables) {
+  int m = 0;
+  static int n;
+  n = 1;
+  EXPECT_NONFATAL_FAILURE({
+    EXPECT_EQ(m, n) << "Expected non-fatal failure.";
+  }, "Expected non-fatal failure.");
+}
+
+// Tests that EXPECT_NONFATAL_FAILURE() succeeds when there is exactly
+// one non-fatal failure and no fatal failure.
+TEST(ExpectNonfatalFailureTest, SucceedsWhenThereIsOneNonfatalFailure) {
+  EXPECT_NONFATAL_FAILURE({
+    ADD_FAILURE() << "Expected non-fatal failure.";
+  }, "Expected non-fatal failure.");
+}
+
+// Tests that EXPECT_NONFATAL_FAILURE() fails when there is no
+// non-fatal failure.
+TEST(ExpectNonfatalFailureTest, FailsWhenThereIsNoNonfatalFailure) {
+  printf("(expecting a failure)\n");
+  EXPECT_NONFATAL_FAILURE({
+  }, "");
+}
+
+// Tests that EXPECT_NONFATAL_FAILURE() fails when there are two
+// non-fatal failures.
+TEST(ExpectNonfatalFailureTest, FailsWhenThereAreTwoNonfatalFailures) {
+  printf("(expecting a failure)\n");
+  EXPECT_NONFATAL_FAILURE({
+    ADD_FAILURE() << "Expected non-fatal failure 1.";
+    ADD_FAILURE() << "Expected non-fatal failure 2.";
+  }, "");
+}
+
+// Tests that EXPECT_NONFATAL_FAILURE() fails when there is one fatal
+// failure.
+TEST(ExpectNonfatalFailureTest, FailsWhenThereIsOneFatalFailure) {
+  printf("(expecting a failure)\n");
+  EXPECT_NONFATAL_FAILURE({
+    FAIL() << "Expected fatal failure.";
+  }, "");
+}
+
+// Tests that EXPECT_NONFATAL_FAILURE() fails when the statement being
+// tested returns.
+TEST(ExpectNonfatalFailureTest, FailsWhenStatementReturns) {
+  printf("(expecting a failure)\n");
+  EXPECT_NONFATAL_FAILURE({
+    return;
+  }, "");
+}
+
+#if GTEST_HAS_EXCEPTIONS
+
+// Tests that EXPECT_NONFATAL_FAILURE() fails when the statement being
+// tested throws.
+TEST(ExpectNonfatalFailureTest, FailsWhenStatementThrows) {
+  printf("(expecting a failure)\n");
+  try {
+    EXPECT_NONFATAL_FAILURE({
+      throw 0;
+    }, "");
+  } catch(int) {  // NOLINT
+  }
+}
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
+// Tests that EXPECT_FATAL_FAILURE() can reference global variables.
+TEST(ExpectFatalFailureTest, CanReferenceGlobalVariables) {
+  global_integer = 0;
+  EXPECT_FATAL_FAILURE({
+    ASSERT_EQ(1, global_integer) << "Expected fatal failure.";
+  }, "Expected fatal failure.");
+}
+
+// Tests that EXPECT_FATAL_FAILURE() can reference local static
+// variables.
+TEST(ExpectFatalFailureTest, CanReferenceLocalStaticVariables) {
+  static int n;
+  n = 1;
+  EXPECT_FATAL_FAILURE({
+    ASSERT_EQ(0, n) << "Expected fatal failure.";
+  }, "Expected fatal failure.");
+}
+
+// Tests that EXPECT_FATAL_FAILURE() succeeds when there is exactly
+// one fatal failure and no non-fatal failure.
+TEST(ExpectFatalFailureTest, SucceedsWhenThereIsOneFatalFailure) {
+  EXPECT_FATAL_FAILURE({
+    FAIL() << "Expected fatal failure.";
+  }, "Expected fatal failure.");
+}
+
+// Tests that EXPECT_FATAL_FAILURE() fails when there is no fatal
+// failure.
+TEST(ExpectFatalFailureTest, FailsWhenThereIsNoFatalFailure) {
+  printf("(expecting a failure)\n");
+  EXPECT_FATAL_FAILURE({
+  }, "");
+}
+
+// A helper for generating a fatal failure.
+void FatalFailure() {
+  FAIL() << "Expected fatal failure.";
+}
+
+// Tests that EXPECT_FATAL_FAILURE() fails when there are two
+// fatal failures.
+TEST(ExpectFatalFailureTest, FailsWhenThereAreTwoFatalFailures) {
+  printf("(expecting a failure)\n");
+  EXPECT_FATAL_FAILURE({
+    FatalFailure();
+    FatalFailure();
+  }, "");
+}
+
+// Tests that EXPECT_FATAL_FAILURE() fails when there is one non-fatal
+// failure.
+TEST(ExpectFatalFailureTest, FailsWhenThereIsOneNonfatalFailure) {
+  printf("(expecting a failure)\n");
+  EXPECT_FATAL_FAILURE({
+    ADD_FAILURE() << "Expected non-fatal failure.";
+  }, "");
+}
+
+// Tests that EXPECT_FATAL_FAILURE() fails when the statement being
+// tested returns.
+TEST(ExpectFatalFailureTest, FailsWhenStatementReturns) {
+  printf("(expecting a failure)\n");
+  EXPECT_FATAL_FAILURE({
+    return;
+  }, "");
+}
+
+#if GTEST_HAS_EXCEPTIONS
+
+// Tests that EXPECT_FATAL_FAILURE() fails when the statement being
+// tested throws.
+TEST(ExpectFatalFailureTest, FailsWhenStatementThrows) {
+  printf("(expecting a failure)\n");
+  try {
+    EXPECT_FATAL_FAILURE({
+      throw 0;
+    }, "");
+  } catch(int) {  // NOLINT
+  }
+}
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
+// This #ifdef block tests the output of value-parameterized tests.
+
+std::string ParamNameFunc(const testing::TestParamInfo<std::string>& info) {
+  return info.param;
+}
+
+class ParamTest : public testing::TestWithParam<std::string> {
+};
+
+TEST_P(ParamTest, Success) {
+  EXPECT_EQ("a", GetParam());
+}
+
+TEST_P(ParamTest, Failure) {
+  EXPECT_EQ("b", GetParam()) << "Expected failure";
+}
+
+INSTANTIATE_TEST_SUITE_P(PrintingStrings,
+                         ParamTest,
+                         testing::Values(std::string("a")),
+                         ParamNameFunc);
+
+// This #ifdef block tests the output of typed tests.
+#if GTEST_HAS_TYPED_TEST
+
+template <typename T>
+class TypedTest : public testing::Test {
+};
+
+TYPED_TEST_SUITE(TypedTest, testing::Types<int>);
+
+TYPED_TEST(TypedTest, Success) {
+  EXPECT_EQ(0, TypeParam());
+}
+
+TYPED_TEST(TypedTest, Failure) {
+  EXPECT_EQ(1, TypeParam()) << "Expected failure";
+}
+
+typedef testing::Types<char, int> TypesForTestWithNames;
+
+template <typename T>
+class TypedTestWithNames : public testing::Test {};
+
+class TypedTestNames {
+ public:
+  template <typename T>
+  static std::string GetName(int i) {
+    if (std::is_same<T, char>::value)
+      return std::string("char") + ::testing::PrintToString(i);
+    if (std::is_same<T, int>::value)
+      return std::string("int") + ::testing::PrintToString(i);
+  }
+};
+
+TYPED_TEST_SUITE(TypedTestWithNames, TypesForTestWithNames, TypedTestNames);
+
+TYPED_TEST(TypedTestWithNames, Success) {}
+
+TYPED_TEST(TypedTestWithNames, Failure) { FAIL(); }
+
+#endif  // GTEST_HAS_TYPED_TEST
+
+// This #ifdef block tests the output of type-parameterized tests.
+#if GTEST_HAS_TYPED_TEST_P
+
+template <typename T>
+class TypedTestP : public testing::Test {
+};
+
+TYPED_TEST_SUITE_P(TypedTestP);
+
+TYPED_TEST_P(TypedTestP, Success) {
+  EXPECT_EQ(0U, TypeParam());
+}
+
+TYPED_TEST_P(TypedTestP, Failure) {
+  EXPECT_EQ(1U, TypeParam()) << "Expected failure";
+}
+
+REGISTER_TYPED_TEST_SUITE_P(TypedTestP, Success, Failure);
+
+typedef testing::Types<unsigned char, unsigned int> UnsignedTypes;
+INSTANTIATE_TYPED_TEST_SUITE_P(Unsigned, TypedTestP, UnsignedTypes);
+
+class TypedTestPNames {
+ public:
+  template <typename T>
+  static std::string GetName(int i) {
+    if (std::is_same<T, unsigned char>::value) {
+      return std::string("unsignedChar") + ::testing::PrintToString(i);
+    }
+    if (std::is_same<T, unsigned int>::value) {
+      return std::string("unsignedInt") + ::testing::PrintToString(i);
+    }
+  }
+};
+
+INSTANTIATE_TYPED_TEST_SUITE_P(UnsignedCustomName, TypedTestP, UnsignedTypes,
+                              TypedTestPNames);
+
+#endif  // GTEST_HAS_TYPED_TEST_P
+
+#if GTEST_HAS_DEATH_TEST
+
+// We rely on the golden file to verify that tests whose test case
+// name ends with DeathTest are run first.
+
+TEST(ADeathTest, ShouldRunFirst) {
+}
+
+# if GTEST_HAS_TYPED_TEST
+
+// We rely on the golden file to verify that typed tests whose test
+// case name ends with DeathTest are run first.
+
+template <typename T>
+class ATypedDeathTest : public testing::Test {
+};
+
+typedef testing::Types<int, double> NumericTypes;
+TYPED_TEST_SUITE(ATypedDeathTest, NumericTypes);
+
+TYPED_TEST(ATypedDeathTest, ShouldRunFirst) {
+}
+
+# endif  // GTEST_HAS_TYPED_TEST
+
+# if GTEST_HAS_TYPED_TEST_P
+
+
+// We rely on the golden file to verify that type-parameterized tests
+// whose test case name ends with DeathTest are run first.
+
+template <typename T>
+class ATypeParamDeathTest : public testing::Test {
+};
+
+TYPED_TEST_SUITE_P(ATypeParamDeathTest);
+
+TYPED_TEST_P(ATypeParamDeathTest, ShouldRunFirst) {
+}
+
+REGISTER_TYPED_TEST_SUITE_P(ATypeParamDeathTest, ShouldRunFirst);
+
+INSTANTIATE_TYPED_TEST_SUITE_P(My, ATypeParamDeathTest, NumericTypes);
+
+# endif  // GTEST_HAS_TYPED_TEST_P
+
+#endif  // GTEST_HAS_DEATH_TEST
+
+// Tests various failure conditions of
+// EXPECT_{,NON}FATAL_FAILURE{,_ON_ALL_THREADS}.
+class ExpectFailureTest : public testing::Test {
+ public:  // Must be public and not protected due to a bug in g++ 3.4.2.
+  enum FailureMode {
+    FATAL_FAILURE,
+    NONFATAL_FAILURE
+  };
+  static void AddFailure(FailureMode failure) {
+    if (failure == FATAL_FAILURE) {
+      FAIL() << "Expected fatal failure.";
+    } else {
+      ADD_FAILURE() << "Expected non-fatal failure.";
+    }
+  }
+};
+
+TEST_F(ExpectFailureTest, ExpectFatalFailure) {
+  // Expected fatal failure, but succeeds.
+  printf("(expecting 1 failure)\n");
+  EXPECT_FATAL_FAILURE(SUCCEED(), "Expected fatal failure.");
+  // Expected fatal failure, but got a non-fatal failure.
+  printf("(expecting 1 failure)\n");
+  EXPECT_FATAL_FAILURE(AddFailure(NONFATAL_FAILURE), "Expected non-fatal "
+                       "failure.");
+  // Wrong message.
+  printf("(expecting 1 failure)\n");
+  EXPECT_FATAL_FAILURE(AddFailure(FATAL_FAILURE), "Some other fatal failure "
+                       "expected.");
+}
+
+TEST_F(ExpectFailureTest, ExpectNonFatalFailure) {
+  // Expected non-fatal failure, but succeeds.
+  printf("(expecting 1 failure)\n");
+  EXPECT_NONFATAL_FAILURE(SUCCEED(), "Expected non-fatal failure.");
+  // Expected non-fatal failure, but got a fatal failure.
+  printf("(expecting 1 failure)\n");
+  EXPECT_NONFATAL_FAILURE(AddFailure(FATAL_FAILURE), "Expected fatal failure.");
+  // Wrong message.
+  printf("(expecting 1 failure)\n");
+  EXPECT_NONFATAL_FAILURE(AddFailure(NONFATAL_FAILURE), "Some other non-fatal "
+                          "failure.");
+}
+
+#if GTEST_IS_THREADSAFE
+
+class ExpectFailureWithThreadsTest : public ExpectFailureTest {
+ protected:
+  static void AddFailureInOtherThread(FailureMode failure) {
+    ThreadWithParam<FailureMode> thread(&AddFailure, failure, nullptr);
+    thread.Join();
+  }
+};
+
+TEST_F(ExpectFailureWithThreadsTest, ExpectFatalFailure) {
+  // We only intercept the current thread.
+  printf("(expecting 2 failures)\n");
+  EXPECT_FATAL_FAILURE(AddFailureInOtherThread(FATAL_FAILURE),
+                       "Expected fatal failure.");
+}
+
+TEST_F(ExpectFailureWithThreadsTest, ExpectNonFatalFailure) {
+  // We only intercept the current thread.
+  printf("(expecting 2 failures)\n");
+  EXPECT_NONFATAL_FAILURE(AddFailureInOtherThread(NONFATAL_FAILURE),
+                          "Expected non-fatal failure.");
+}
+
+typedef ExpectFailureWithThreadsTest ScopedFakeTestPartResultReporterTest;
+
+// Tests that the ScopedFakeTestPartResultReporter only catches failures from
+// the current thread if it is instantiated with INTERCEPT_ONLY_CURRENT_THREAD.
+TEST_F(ScopedFakeTestPartResultReporterTest, InterceptOnlyCurrentThread) {
+  printf("(expecting 2 failures)\n");
+  TestPartResultArray results;
+  {
+    ScopedFakeTestPartResultReporter reporter(
+        ScopedFakeTestPartResultReporter::INTERCEPT_ONLY_CURRENT_THREAD,
+        &results);
+    AddFailureInOtherThread(FATAL_FAILURE);
+    AddFailureInOtherThread(NONFATAL_FAILURE);
+  }
+  // The two failures should not have been intercepted.
+  EXPECT_EQ(0, results.size()) << "This shouldn't fail.";
+}
+
+#endif  // GTEST_IS_THREADSAFE
+
+TEST_F(ExpectFailureTest, ExpectFatalFailureOnAllThreads) {
+  // Expected fatal failure, but succeeds.
+  printf("(expecting 1 failure)\n");
+  EXPECT_FATAL_FAILURE_ON_ALL_THREADS(SUCCEED(), "Expected fatal failure.");
+  // Expected fatal failure, but got a non-fatal failure.
+  printf("(expecting 1 failure)\n");
+  EXPECT_FATAL_FAILURE_ON_ALL_THREADS(AddFailure(NONFATAL_FAILURE),
+                                      "Expected non-fatal failure.");
+  // Wrong message.
+  printf("(expecting 1 failure)\n");
+  EXPECT_FATAL_FAILURE_ON_ALL_THREADS(AddFailure(FATAL_FAILURE),
+                                      "Some other fatal failure expected.");
+}
+
+TEST_F(ExpectFailureTest, ExpectNonFatalFailureOnAllThreads) {
+  // Expected non-fatal failure, but succeeds.
+  printf("(expecting 1 failure)\n");
+  EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(SUCCEED(), "Expected non-fatal "
+                                         "failure.");
+  // Expected non-fatal failure, but got a fatal failure.
+  printf("(expecting 1 failure)\n");
+  EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(AddFailure(FATAL_FAILURE),
+                                         "Expected fatal failure.");
+  // Wrong message.
+  printf("(expecting 1 failure)\n");
+  EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(AddFailure(NONFATAL_FAILURE),
+                                         "Some other non-fatal failure.");
+}
+
+class DynamicFixture : public testing::Test {
+ protected:
+  DynamicFixture() { printf("DynamicFixture()\n"); }
+  ~DynamicFixture() override { printf("~DynamicFixture()\n"); }
+  void SetUp() override { printf("DynamicFixture::SetUp\n"); }
+  void TearDown() override { printf("DynamicFixture::TearDown\n"); }
+
+  static void SetUpTestSuite() { printf("DynamicFixture::SetUpTestSuite\n"); }
+  static void TearDownTestSuite() {
+    printf("DynamicFixture::TearDownTestSuite\n");
+  }
+};
+
+template <bool Pass>
+class DynamicTest : public DynamicFixture {
+ public:
+  void TestBody() override { EXPECT_TRUE(Pass); }
+};
+
+auto dynamic_test = (
+    // Register two tests with the same fixture correctly.
+    testing::RegisterTest(
+        "DynamicFixture", "DynamicTestPass", nullptr, nullptr, __FILE__,
+        __LINE__, []() -> DynamicFixture* { return new DynamicTest<true>; }),
+    testing::RegisterTest(
+        "DynamicFixture", "DynamicTestFail", nullptr, nullptr, __FILE__,
+        __LINE__, []() -> DynamicFixture* { return new DynamicTest<false>; }),
+
+    // Register the same fixture with another name. That's fine.
+    testing::RegisterTest(
+        "DynamicFixtureAnotherName", "DynamicTestPass", nullptr, nullptr,
+        __FILE__, __LINE__,
+        []() -> DynamicFixture* { return new DynamicTest<true>; }),
+
+    // Register two tests with the same fixture incorrectly.
+    testing::RegisterTest(
+        "BadDynamicFixture1", "FixtureBase", nullptr, nullptr, __FILE__,
+        __LINE__, []() -> DynamicFixture* { return new DynamicTest<true>; }),
+    testing::RegisterTest(
+        "BadDynamicFixture1", "TestBase", nullptr, nullptr, __FILE__, __LINE__,
+        []() -> testing::Test* { return new DynamicTest<true>; }),
+
+    // Register two tests with the same fixture incorrectly by ommiting the
+    // return type.
+    testing::RegisterTest(
+        "BadDynamicFixture2", "FixtureBase", nullptr, nullptr, __FILE__,
+        __LINE__, []() -> DynamicFixture* { return new DynamicTest<true>; }),
+    testing::RegisterTest("BadDynamicFixture2", "Derived", nullptr, nullptr,
+                          __FILE__, __LINE__,
+                          []() { return new DynamicTest<true>; }));
+
+// Two test environments for testing testing::AddGlobalTestEnvironment().
+
+class FooEnvironment : public testing::Environment {
+ public:
+  void SetUp() override { printf("%s", "FooEnvironment::SetUp() called.\n"); }
+
+  void TearDown() override {
+    printf("%s", "FooEnvironment::TearDown() called.\n");
+    FAIL() << "Expected fatal failure.";
+  }
+};
+
+class BarEnvironment : public testing::Environment {
+ public:
+  void SetUp() override { printf("%s", "BarEnvironment::SetUp() called.\n"); }
+
+  void TearDown() override {
+    printf("%s", "BarEnvironment::TearDown() called.\n");
+    ADD_FAILURE() << "Expected non-fatal failure.";
+  }
+};
+
+// The main function.
+//
+// The idea is to use Google Test to run all the tests we have defined (some
+// of them are intended to fail), and then compare the test results
+// with the "golden" file.
+int main(int argc, char **argv) {
+  testing::GTEST_FLAG(print_time) = false;
+
+  // We just run the tests, knowing some of them are intended to fail.
+  // We will use a separate Python script to compare the output of
+  // this program with the golden file.
+
+  // It's hard to test InitGoogleTest() directly, as it has many
+  // global side effects.  The following line serves as a sanity test
+  // for it.
+  testing::InitGoogleTest(&argc, argv);
+  bool internal_skip_environment_and_ad_hoc_tests =
+      std::count(argv, argv + argc,
+                 std::string("internal_skip_environment_and_ad_hoc_tests")) > 0;
+
+#if GTEST_HAS_DEATH_TEST
+  if (testing::internal::GTEST_FLAG(internal_run_death_test) != "") {
+    // Skip the usual output capturing if we're running as the child
+    // process of an threadsafe-style death test.
+# if GTEST_OS_WINDOWS
+    posix::FReopen("nul:", "w", stdout);
+# else
+    posix::FReopen("/dev/null", "w", stdout);
+# endif  // GTEST_OS_WINDOWS
+    return RUN_ALL_TESTS();
+  }
+#endif  // GTEST_HAS_DEATH_TEST
+
+  if (internal_skip_environment_and_ad_hoc_tests)
+    return RUN_ALL_TESTS();
+
+  // Registers two global test environments.
+  // The golden file verifies that they are set up in the order they
+  // are registered, and torn down in the reverse order.
+  testing::AddGlobalTestEnvironment(new FooEnvironment);
+  testing::AddGlobalTestEnvironment(new BarEnvironment);
+#if _MSC_VER
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4127
+#endif  //  _MSC_VER
+  return RunAllTests();
+}
diff --git a/build/_deps/googletest-src/googletest/test/googletest-param-test-invalid-name1-test.py b/build/_deps/googletest-src/googletest/test/googletest-param-test-invalid-name1-test.py
new file mode 100644
index 0000000000000000000000000000000000000000..2a08477a77ebdf0aa55f23444abd6b839d90ba43
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-param-test-invalid-name1-test.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+#
+# Copyright 2015 Google Inc. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Verifies that Google Test warns the user when not initialized properly."""
+
+import gtest_test_utils
+
+binary_name = 'googletest-param-test-invalid-name1-test_'
+COMMAND = gtest_test_utils.GetTestExecutablePath(binary_name)
+
+
+def Assert(condition):
+  if not condition:
+    raise AssertionError
+
+
+def TestExitCodeAndOutput(command):
+  """Runs the given command and verifies its exit code and output."""
+
+  err = ('Parameterized test name \'"InvalidWithQuotes"\' is invalid')
+
+  p = gtest_test_utils.Subprocess(command)
+  Assert(p.terminated_by_signal)
+
+  # Verify the output message contains appropriate output
+  Assert(err in p.output)
+
+
+class GTestParamTestInvalidName1Test(gtest_test_utils.TestCase):
+
+  def testExitCodeAndOutput(self):
+    TestExitCodeAndOutput(COMMAND)
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-param-test-invalid-name1-test_.cc b/build/_deps/googletest-src/googletest/test/googletest-param-test-invalid-name1-test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..955d699900d8cd8eb19b251d35d6d5f7ee82e604
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-param-test-invalid-name1-test_.cc
@@ -0,0 +1,50 @@
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include "gtest/gtest.h"
+
+namespace {
+class DummyTest : public ::testing::TestWithParam<const char *> {};
+
+TEST_P(DummyTest, Dummy) {
+}
+
+INSTANTIATE_TEST_SUITE_P(InvalidTestName,
+                         DummyTest,
+                         ::testing::Values("InvalidWithQuotes"),
+                         ::testing::PrintToStringParamName());
+
+}  // namespace
+
+int main(int argc, char *argv[]) {
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
+
diff --git a/build/_deps/googletest-src/googletest/test/googletest-param-test-invalid-name2-test.py b/build/_deps/googletest-src/googletest/test/googletest-param-test-invalid-name2-test.py
new file mode 100644
index 0000000000000000000000000000000000000000..ab838f4632291d1cb78e4a11ec3ab0c773b94d5c
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-param-test-invalid-name2-test.py
@@ -0,0 +1,62 @@
+#!/usr/bin/env python
+#
+# Copyright 2015 Google Inc. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Verifies that Google Test warns the user when not initialized properly."""
+
+import gtest_test_utils
+
+binary_name = 'googletest-param-test-invalid-name2-test_'
+COMMAND = gtest_test_utils.GetTestExecutablePath(binary_name)
+
+
+def Assert(condition):
+  if not condition:
+    raise AssertionError
+
+
+def TestExitCodeAndOutput(command):
+  """Runs the given command and verifies its exit code and output."""
+
+  err = ('Duplicate parameterized test name \'a\'')
+
+  p = gtest_test_utils.Subprocess(command)
+  Assert(p.terminated_by_signal)
+
+  # Check for appropriate output
+  Assert(err in p.output)
+
+
+class GTestParamTestInvalidName2Test(gtest_test_utils.TestCase):
+
+  def testExitCodeAndOutput(self):
+    TestExitCodeAndOutput(COMMAND)
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-param-test-invalid-name2-test_.cc b/build/_deps/googletest-src/googletest/test/googletest-param-test-invalid-name2-test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..76371df54f0b3e2f277364dd8a22d02823c2eecc
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-param-test-invalid-name2-test_.cc
@@ -0,0 +1,55 @@
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include "gtest/gtest.h"
+
+namespace {
+class DummyTest : public ::testing::TestWithParam<const char *> {};
+
+std::string StringParamTestSuffix(
+    const testing::TestParamInfo<const char*>& info) {
+  return std::string(info.param);
+}
+
+TEST_P(DummyTest, Dummy) {
+}
+
+INSTANTIATE_TEST_SUITE_P(DuplicateTestNames,
+                         DummyTest,
+                         ::testing::Values("a", "b", "a", "c"),
+                         StringParamTestSuffix);
+}  // namespace
+
+int main(int argc, char *argv[]) {
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
+
+
diff --git a/build/_deps/googletest-src/googletest/test/googletest-param-test-test.cc b/build/_deps/googletest-src/googletest/test/googletest-param-test-test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6c187dfff0c1239cf02c09f284d087376cbfb22d
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-param-test-test.cc
@@ -0,0 +1,1055 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Tests for Google Test itself. This file verifies that the parameter
+// generators objects produce correct parameter sequences and that
+// Google Test runtime instantiates correct tests from those sequences.
+
+#include "gtest/gtest.h"
+
+# include <algorithm>
+# include <iostream>
+# include <list>
+# include <sstream>
+# include <string>
+# include <vector>
+
+# include "src/gtest-internal-inl.h"  // for UnitTestOptions
+# include "test/googletest-param-test-test.h"
+
+using ::std::vector;
+using ::std::sort;
+
+using ::testing::AddGlobalTestEnvironment;
+using ::testing::Bool;
+using ::testing::Combine;
+using ::testing::Message;
+using ::testing::Range;
+using ::testing::TestWithParam;
+using ::testing::Values;
+using ::testing::ValuesIn;
+
+using ::testing::internal::ParamGenerator;
+using ::testing::internal::UnitTestOptions;
+
+// Prints a value to a string.
+//
+// FIXME: remove PrintValue() when we move matchers and
+// EXPECT_THAT() from Google Mock to Google Test.  At that time, we
+// can write EXPECT_THAT(x, Eq(y)) to compare two tuples x and y, as
+// EXPECT_THAT() and the matchers know how to print tuples.
+template <typename T>
+::std::string PrintValue(const T& value) {
+  return testing::PrintToString(value);
+}
+
+// Verifies that a sequence generated by the generator and accessed
+// via the iterator object matches the expected one using Google Test
+// assertions.
+template <typename T, size_t N>
+void VerifyGenerator(const ParamGenerator<T>& generator,
+                     const T (&expected_values)[N]) {
+  typename ParamGenerator<T>::iterator it = generator.begin();
+  for (size_t i = 0; i < N; ++i) {
+    ASSERT_FALSE(it == generator.end())
+        << "At element " << i << " when accessing via an iterator "
+        << "created with the copy constructor.\n";
+    // We cannot use EXPECT_EQ() here as the values may be tuples,
+    // which don't support <<.
+    EXPECT_TRUE(expected_values[i] == *it)
+        << "where i is " << i
+        << ", expected_values[i] is " << PrintValue(expected_values[i])
+        << ", *it is " << PrintValue(*it)
+        << ", and 'it' is an iterator created with the copy constructor.\n";
+    ++it;
+  }
+  EXPECT_TRUE(it == generator.end())
+        << "At the presumed end of sequence when accessing via an iterator "
+        << "created with the copy constructor.\n";
+
+  // Test the iterator assignment. The following lines verify that
+  // the sequence accessed via an iterator initialized via the
+  // assignment operator (as opposed to a copy constructor) matches
+  // just the same.
+  it = generator.begin();
+  for (size_t i = 0; i < N; ++i) {
+    ASSERT_FALSE(it == generator.end())
+        << "At element " << i << " when accessing via an iterator "
+        << "created with the assignment operator.\n";
+    EXPECT_TRUE(expected_values[i] == *it)
+        << "where i is " << i
+        << ", expected_values[i] is " << PrintValue(expected_values[i])
+        << ", *it is " << PrintValue(*it)
+        << ", and 'it' is an iterator created with the copy constructor.\n";
+    ++it;
+  }
+  EXPECT_TRUE(it == generator.end())
+        << "At the presumed end of sequence when accessing via an iterator "
+        << "created with the assignment operator.\n";
+}
+
+template <typename T>
+void VerifyGeneratorIsEmpty(const ParamGenerator<T>& generator) {
+  typename ParamGenerator<T>::iterator it = generator.begin();
+  EXPECT_TRUE(it == generator.end());
+
+  it = generator.begin();
+  EXPECT_TRUE(it == generator.end());
+}
+
+// Generator tests. They test that each of the provided generator functions
+// generates an expected sequence of values. The general test pattern
+// instantiates a generator using one of the generator functions,
+// checks the sequence produced by the generator using its iterator API,
+// and then resets the iterator back to the beginning of the sequence
+// and checks the sequence again.
+
+// Tests that iterators produced by generator functions conform to the
+// ForwardIterator concept.
+TEST(IteratorTest, ParamIteratorConformsToForwardIteratorConcept) {
+  const ParamGenerator<int> gen = Range(0, 10);
+  ParamGenerator<int>::iterator it = gen.begin();
+
+  // Verifies that iterator initialization works as expected.
+  ParamGenerator<int>::iterator it2 = it;
+  EXPECT_TRUE(*it == *it2) << "Initialized iterators must point to the "
+                           << "element same as its source points to";
+
+  // Verifies that iterator assignment works as expected.
+  ++it;
+  EXPECT_FALSE(*it == *it2);
+  it2 = it;
+  EXPECT_TRUE(*it == *it2) << "Assigned iterators must point to the "
+                           << "element same as its source points to";
+
+  // Verifies that prefix operator++() returns *this.
+  EXPECT_EQ(&it, &(++it)) << "Result of the prefix operator++ must be "
+                          << "refer to the original object";
+
+  // Verifies that the result of the postfix operator++ points to the value
+  // pointed to by the original iterator.
+  int original_value = *it;  // Have to compute it outside of macro call to be
+                             // unaffected by the parameter evaluation order.
+  EXPECT_EQ(original_value, *(it++));
+
+  // Verifies that prefix and postfix operator++() advance an iterator
+  // all the same.
+  it2 = it;
+  ++it;
+  ++it2;
+  EXPECT_TRUE(*it == *it2);
+}
+
+// Tests that Range() generates the expected sequence.
+TEST(RangeTest, IntRangeWithDefaultStep) {
+  const ParamGenerator<int> gen = Range(0, 3);
+  const int expected_values[] = {0, 1, 2};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Edge case. Tests that Range() generates the single element sequence
+// as expected when provided with range limits that are equal.
+TEST(RangeTest, IntRangeSingleValue) {
+  const ParamGenerator<int> gen = Range(0, 1);
+  const int expected_values[] = {0};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Edge case. Tests that Range() with generates empty sequence when
+// supplied with an empty range.
+TEST(RangeTest, IntRangeEmpty) {
+  const ParamGenerator<int> gen = Range(0, 0);
+  VerifyGeneratorIsEmpty(gen);
+}
+
+// Tests that Range() with custom step (greater then one) generates
+// the expected sequence.
+TEST(RangeTest, IntRangeWithCustomStep) {
+  const ParamGenerator<int> gen = Range(0, 9, 3);
+  const int expected_values[] = {0, 3, 6};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Tests that Range() with custom step (greater then one) generates
+// the expected sequence when the last element does not fall on the
+// upper range limit. Sequences generated by Range() must not have
+// elements beyond the range limits.
+TEST(RangeTest, IntRangeWithCustomStepOverUpperBound) {
+  const ParamGenerator<int> gen = Range(0, 4, 3);
+  const int expected_values[] = {0, 3};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Verifies that Range works with user-defined types that define
+// copy constructor, operator=(), operator+(), and operator<().
+class DogAdder {
+ public:
+  explicit DogAdder(const char* a_value) : value_(a_value) {}
+  DogAdder(const DogAdder& other) : value_(other.value_.c_str()) {}
+
+  DogAdder operator=(const DogAdder& other) {
+    if (this != &other)
+      value_ = other.value_;
+    return *this;
+  }
+  DogAdder operator+(const DogAdder& other) const {
+    Message msg;
+    msg << value_.c_str() << other.value_.c_str();
+    return DogAdder(msg.GetString().c_str());
+  }
+  bool operator<(const DogAdder& other) const {
+    return value_ < other.value_;
+  }
+  const std::string& value() const { return value_; }
+
+ private:
+  std::string value_;
+};
+
+TEST(RangeTest, WorksWithACustomType) {
+  const ParamGenerator<DogAdder> gen =
+      Range(DogAdder("cat"), DogAdder("catdogdog"), DogAdder("dog"));
+  ParamGenerator<DogAdder>::iterator it = gen.begin();
+
+  ASSERT_FALSE(it == gen.end());
+  EXPECT_STREQ("cat", it->value().c_str());
+
+  ASSERT_FALSE(++it == gen.end());
+  EXPECT_STREQ("catdog", it->value().c_str());
+
+  EXPECT_TRUE(++it == gen.end());
+}
+
+class IntWrapper {
+ public:
+  explicit IntWrapper(int a_value) : value_(a_value) {}
+  IntWrapper(const IntWrapper& other) : value_(other.value_) {}
+
+  IntWrapper operator=(const IntWrapper& other) {
+    value_ = other.value_;
+    return *this;
+  }
+  // operator+() adds a different type.
+  IntWrapper operator+(int other) const { return IntWrapper(value_ + other); }
+  bool operator<(const IntWrapper& other) const {
+    return value_ < other.value_;
+  }
+  int value() const { return value_; }
+
+ private:
+  int value_;
+};
+
+TEST(RangeTest, WorksWithACustomTypeWithDifferentIncrementType) {
+  const ParamGenerator<IntWrapper> gen = Range(IntWrapper(0), IntWrapper(2));
+  ParamGenerator<IntWrapper>::iterator it = gen.begin();
+
+  ASSERT_FALSE(it == gen.end());
+  EXPECT_EQ(0, it->value());
+
+  ASSERT_FALSE(++it == gen.end());
+  EXPECT_EQ(1, it->value());
+
+  EXPECT_TRUE(++it == gen.end());
+}
+
+// Tests that ValuesIn() with an array parameter generates
+// the expected sequence.
+TEST(ValuesInTest, ValuesInArray) {
+  int array[] = {3, 5, 8};
+  const ParamGenerator<int> gen = ValuesIn(array);
+  VerifyGenerator(gen, array);
+}
+
+// Tests that ValuesIn() with a const array parameter generates
+// the expected sequence.
+TEST(ValuesInTest, ValuesInConstArray) {
+  const int array[] = {3, 5, 8};
+  const ParamGenerator<int> gen = ValuesIn(array);
+  VerifyGenerator(gen, array);
+}
+
+// Edge case. Tests that ValuesIn() with an array parameter containing a
+// single element generates the single element sequence.
+TEST(ValuesInTest, ValuesInSingleElementArray) {
+  int array[] = {42};
+  const ParamGenerator<int> gen = ValuesIn(array);
+  VerifyGenerator(gen, array);
+}
+
+// Tests that ValuesIn() generates the expected sequence for an STL
+// container (vector).
+TEST(ValuesInTest, ValuesInVector) {
+  typedef ::std::vector<int> ContainerType;
+  ContainerType values;
+  values.push_back(3);
+  values.push_back(5);
+  values.push_back(8);
+  const ParamGenerator<int> gen = ValuesIn(values);
+
+  const int expected_values[] = {3, 5, 8};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Tests that ValuesIn() generates the expected sequence.
+TEST(ValuesInTest, ValuesInIteratorRange) {
+  typedef ::std::vector<int> ContainerType;
+  ContainerType values;
+  values.push_back(3);
+  values.push_back(5);
+  values.push_back(8);
+  const ParamGenerator<int> gen = ValuesIn(values.begin(), values.end());
+
+  const int expected_values[] = {3, 5, 8};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Edge case. Tests that ValuesIn() provided with an iterator range specifying a
+// single value generates a single-element sequence.
+TEST(ValuesInTest, ValuesInSingleElementIteratorRange) {
+  typedef ::std::vector<int> ContainerType;
+  ContainerType values;
+  values.push_back(42);
+  const ParamGenerator<int> gen = ValuesIn(values.begin(), values.end());
+
+  const int expected_values[] = {42};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Edge case. Tests that ValuesIn() provided with an empty iterator range
+// generates an empty sequence.
+TEST(ValuesInTest, ValuesInEmptyIteratorRange) {
+  typedef ::std::vector<int> ContainerType;
+  ContainerType values;
+  const ParamGenerator<int> gen = ValuesIn(values.begin(), values.end());
+
+  VerifyGeneratorIsEmpty(gen);
+}
+
+// Tests that the Values() generates the expected sequence.
+TEST(ValuesTest, ValuesWorks) {
+  const ParamGenerator<int> gen = Values(3, 5, 8);
+
+  const int expected_values[] = {3, 5, 8};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Tests that Values() generates the expected sequences from elements of
+// different types convertible to ParamGenerator's parameter type.
+TEST(ValuesTest, ValuesWorksForValuesOfCompatibleTypes) {
+  const ParamGenerator<double> gen = Values(3, 5.0f, 8.0);
+
+  const double expected_values[] = {3.0, 5.0, 8.0};
+  VerifyGenerator(gen, expected_values);
+}
+
+TEST(ValuesTest, ValuesWorksForMaxLengthList) {
+  const ParamGenerator<int> gen = Values(
+      10, 20, 30, 40, 50, 60, 70, 80, 90, 100,
+      110, 120, 130, 140, 150, 160, 170, 180, 190, 200,
+      210, 220, 230, 240, 250, 260, 270, 280, 290, 300,
+      310, 320, 330, 340, 350, 360, 370, 380, 390, 400,
+      410, 420, 430, 440, 450, 460, 470, 480, 490, 500);
+
+  const int expected_values[] = {
+      10, 20, 30, 40, 50, 60, 70, 80, 90, 100,
+      110, 120, 130, 140, 150, 160, 170, 180, 190, 200,
+      210, 220, 230, 240, 250, 260, 270, 280, 290, 300,
+      310, 320, 330, 340, 350, 360, 370, 380, 390, 400,
+      410, 420, 430, 440, 450, 460, 470, 480, 490, 500};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Edge case test. Tests that single-parameter Values() generates the sequence
+// with the single value.
+TEST(ValuesTest, ValuesWithSingleParameter) {
+  const ParamGenerator<int> gen = Values(42);
+
+  const int expected_values[] = {42};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Tests that Bool() generates sequence (false, true).
+TEST(BoolTest, BoolWorks) {
+  const ParamGenerator<bool> gen = Bool();
+
+  const bool expected_values[] = {false, true};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Tests that Combine() with two parameters generates the expected sequence.
+TEST(CombineTest, CombineWithTwoParameters) {
+  const char* foo = "foo";
+  const char* bar = "bar";
+  const ParamGenerator<std::tuple<const char*, int> > gen =
+      Combine(Values(foo, bar), Values(3, 4));
+
+  std::tuple<const char*, int> expected_values[] = {
+      std::make_tuple(foo, 3), std::make_tuple(foo, 4), std::make_tuple(bar, 3),
+      std::make_tuple(bar, 4)};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Tests that Combine() with three parameters generates the expected sequence.
+TEST(CombineTest, CombineWithThreeParameters) {
+  const ParamGenerator<std::tuple<int, int, int> > gen =
+      Combine(Values(0, 1), Values(3, 4), Values(5, 6));
+  std::tuple<int, int, int> expected_values[] = {
+      std::make_tuple(0, 3, 5), std::make_tuple(0, 3, 6),
+      std::make_tuple(0, 4, 5), std::make_tuple(0, 4, 6),
+      std::make_tuple(1, 3, 5), std::make_tuple(1, 3, 6),
+      std::make_tuple(1, 4, 5), std::make_tuple(1, 4, 6)};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Tests that the Combine() with the first parameter generating a single value
+// sequence generates a sequence with the number of elements equal to the
+// number of elements in the sequence generated by the second parameter.
+TEST(CombineTest, CombineWithFirstParameterSingleValue) {
+  const ParamGenerator<std::tuple<int, int> > gen =
+      Combine(Values(42), Values(0, 1));
+
+  std::tuple<int, int> expected_values[] = {std::make_tuple(42, 0),
+                                            std::make_tuple(42, 1)};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Tests that the Combine() with the second parameter generating a single value
+// sequence generates a sequence with the number of elements equal to the
+// number of elements in the sequence generated by the first parameter.
+TEST(CombineTest, CombineWithSecondParameterSingleValue) {
+  const ParamGenerator<std::tuple<int, int> > gen =
+      Combine(Values(0, 1), Values(42));
+
+  std::tuple<int, int> expected_values[] = {std::make_tuple(0, 42),
+                                            std::make_tuple(1, 42)};
+  VerifyGenerator(gen, expected_values);
+}
+
+// Tests that when the first parameter produces an empty sequence,
+// Combine() produces an empty sequence, too.
+TEST(CombineTest, CombineWithFirstParameterEmptyRange) {
+  const ParamGenerator<std::tuple<int, int> > gen =
+      Combine(Range(0, 0), Values(0, 1));
+  VerifyGeneratorIsEmpty(gen);
+}
+
+// Tests that when the second parameter produces an empty sequence,
+// Combine() produces an empty sequence, too.
+TEST(CombineTest, CombineWithSecondParameterEmptyRange) {
+  const ParamGenerator<std::tuple<int, int> > gen =
+      Combine(Values(0, 1), Range(1, 1));
+  VerifyGeneratorIsEmpty(gen);
+}
+
+// Edge case. Tests that combine works with the maximum number
+// of parameters supported by Google Test (currently 10).
+TEST(CombineTest, CombineWithMaxNumberOfParameters) {
+  const char* foo = "foo";
+  const char* bar = "bar";
+  const ParamGenerator<
+      std::tuple<const char*, int, int, int, int, int, int, int, int, int> >
+      gen =
+          Combine(Values(foo, bar), Values(1), Values(2), Values(3), Values(4),
+                  Values(5), Values(6), Values(7), Values(8), Values(9));
+
+  std::tuple<const char*, int, int, int, int, int, int, int, int, int>
+      expected_values[] = {std::make_tuple(foo, 1, 2, 3, 4, 5, 6, 7, 8, 9),
+                           std::make_tuple(bar, 1, 2, 3, 4, 5, 6, 7, 8, 9)};
+  VerifyGenerator(gen, expected_values);
+}
+
+class NonDefaultConstructAssignString {
+ public:
+  NonDefaultConstructAssignString(const std::string& s) : str_(s) {}
+
+  const std::string& str() const { return str_; }
+
+ private:
+  std::string str_;
+
+  // Not default constructible
+  NonDefaultConstructAssignString();
+  // Not assignable
+  void operator=(const NonDefaultConstructAssignString&);
+};
+
+TEST(CombineTest, NonDefaultConstructAssign) {
+  const ParamGenerator<std::tuple<int, NonDefaultConstructAssignString> > gen =
+      Combine(Values(0, 1), Values(NonDefaultConstructAssignString("A"),
+                                   NonDefaultConstructAssignString("B")));
+
+  ParamGenerator<std::tuple<int, NonDefaultConstructAssignString> >::iterator
+      it = gen.begin();
+
+  EXPECT_EQ(0, std::get<0>(*it));
+  EXPECT_EQ("A", std::get<1>(*it).str());
+  ++it;
+
+  EXPECT_EQ(0, std::get<0>(*it));
+  EXPECT_EQ("B", std::get<1>(*it).str());
+  ++it;
+
+  EXPECT_EQ(1, std::get<0>(*it));
+  EXPECT_EQ("A", std::get<1>(*it).str());
+  ++it;
+
+  EXPECT_EQ(1, std::get<0>(*it));
+  EXPECT_EQ("B", std::get<1>(*it).str());
+  ++it;
+
+  EXPECT_TRUE(it == gen.end());
+}
+
+
+// Tests that an generator produces correct sequence after being
+// assigned from another generator.
+TEST(ParamGeneratorTest, AssignmentWorks) {
+  ParamGenerator<int> gen = Values(1, 2);
+  const ParamGenerator<int> gen2 = Values(3, 4);
+  gen = gen2;
+
+  const int expected_values[] = {3, 4};
+  VerifyGenerator(gen, expected_values);
+}
+
+// This test verifies that the tests are expanded and run as specified:
+// one test per element from the sequence produced by the generator
+// specified in INSTANTIATE_TEST_SUITE_P. It also verifies that the test's
+// fixture constructor, SetUp(), and TearDown() have run and have been
+// supplied with the correct parameters.
+
+// The use of environment object allows detection of the case where no test
+// case functionality is run at all. In this case TearDownTestSuite will not
+// be able to detect missing tests, naturally.
+template <int kExpectedCalls>
+class TestGenerationEnvironment : public ::testing::Environment {
+ public:
+  static TestGenerationEnvironment* Instance() {
+    static TestGenerationEnvironment* instance = new TestGenerationEnvironment;
+    return instance;
+  }
+
+  void FixtureConstructorExecuted() { fixture_constructor_count_++; }
+  void SetUpExecuted() { set_up_count_++; }
+  void TearDownExecuted() { tear_down_count_++; }
+  void TestBodyExecuted() { test_body_count_++; }
+
+  void TearDown() override {
+    // If all MultipleTestGenerationTest tests have been de-selected
+    // by the filter flag, the following checks make no sense.
+    bool perform_check = false;
+
+    for (int i = 0; i < kExpectedCalls; ++i) {
+      Message msg;
+      msg << "TestsExpandedAndRun/" << i;
+      if (UnitTestOptions::FilterMatchesTest(
+             "TestExpansionModule/MultipleTestGenerationTest",
+              msg.GetString().c_str())) {
+        perform_check = true;
+      }
+    }
+    if (perform_check) {
+      EXPECT_EQ(kExpectedCalls, fixture_constructor_count_)
+          << "Fixture constructor of ParamTestGenerationTest test case "
+          << "has not been run as expected.";
+      EXPECT_EQ(kExpectedCalls, set_up_count_)
+          << "Fixture SetUp method of ParamTestGenerationTest test case "
+          << "has not been run as expected.";
+      EXPECT_EQ(kExpectedCalls, tear_down_count_)
+          << "Fixture TearDown method of ParamTestGenerationTest test case "
+          << "has not been run as expected.";
+      EXPECT_EQ(kExpectedCalls, test_body_count_)
+          << "Test in ParamTestGenerationTest test case "
+          << "has not been run as expected.";
+    }
+  }
+
+ private:
+  TestGenerationEnvironment() : fixture_constructor_count_(0), set_up_count_(0),
+                                tear_down_count_(0), test_body_count_(0) {}
+
+  int fixture_constructor_count_;
+  int set_up_count_;
+  int tear_down_count_;
+  int test_body_count_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestGenerationEnvironment);
+};
+
+const int test_generation_params[] = {36, 42, 72};
+
+class TestGenerationTest : public TestWithParam<int> {
+ public:
+  enum {
+    PARAMETER_COUNT =
+        sizeof(test_generation_params)/sizeof(test_generation_params[0])
+  };
+
+  typedef TestGenerationEnvironment<PARAMETER_COUNT> Environment;
+
+  TestGenerationTest() {
+    Environment::Instance()->FixtureConstructorExecuted();
+    current_parameter_ = GetParam();
+  }
+  void SetUp() override {
+    Environment::Instance()->SetUpExecuted();
+    EXPECT_EQ(current_parameter_, GetParam());
+  }
+  void TearDown() override {
+    Environment::Instance()->TearDownExecuted();
+    EXPECT_EQ(current_parameter_, GetParam());
+  }
+
+  static void SetUpTestSuite() {
+    bool all_tests_in_test_case_selected = true;
+
+    for (int i = 0; i < PARAMETER_COUNT; ++i) {
+      Message test_name;
+      test_name << "TestsExpandedAndRun/" << i;
+      if ( !UnitTestOptions::FilterMatchesTest(
+                "TestExpansionModule/MultipleTestGenerationTest",
+                test_name.GetString())) {
+        all_tests_in_test_case_selected = false;
+      }
+    }
+    EXPECT_TRUE(all_tests_in_test_case_selected)
+        << "When running the TestGenerationTest test case all of its tests\n"
+        << "must be selected by the filter flag for the test case to pass.\n"
+        << "If not all of them are enabled, we can't reliably conclude\n"
+        << "that the correct number of tests have been generated.";
+
+    collected_parameters_.clear();
+  }
+
+  static void TearDownTestSuite() {
+    vector<int> expected_values(test_generation_params,
+                                test_generation_params + PARAMETER_COUNT);
+    // Test execution order is not guaranteed by Google Test,
+    // so the order of values in collected_parameters_ can be
+    // different and we have to sort to compare.
+    sort(expected_values.begin(), expected_values.end());
+    sort(collected_parameters_.begin(), collected_parameters_.end());
+
+    EXPECT_TRUE(collected_parameters_ == expected_values);
+  }
+
+ protected:
+  int current_parameter_;
+  static vector<int> collected_parameters_;
+
+ private:
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestGenerationTest);
+};
+vector<int> TestGenerationTest::collected_parameters_;
+
+TEST_P(TestGenerationTest, TestsExpandedAndRun) {
+  Environment::Instance()->TestBodyExecuted();
+  EXPECT_EQ(current_parameter_, GetParam());
+  collected_parameters_.push_back(GetParam());
+}
+INSTANTIATE_TEST_SUITE_P(TestExpansionModule, TestGenerationTest,
+                         ValuesIn(test_generation_params));
+
+// This test verifies that the element sequence (third parameter of
+// INSTANTIATE_TEST_SUITE_P) is evaluated in InitGoogleTest() and neither at
+// the call site of INSTANTIATE_TEST_SUITE_P nor in RUN_ALL_TESTS().  For
+// that, we declare param_value_ to be a static member of
+// GeneratorEvaluationTest and initialize it to 0.  We set it to 1 in
+// main(), just before invocation of InitGoogleTest().  After calling
+// InitGoogleTest(), we set the value to 2.  If the sequence is evaluated
+// before or after InitGoogleTest, INSTANTIATE_TEST_SUITE_P will create a
+// test with parameter other than 1, and the test body will fail the
+// assertion.
+class GeneratorEvaluationTest : public TestWithParam<int> {
+ public:
+  static int param_value() { return param_value_; }
+  static void set_param_value(int param_value) { param_value_ = param_value; }
+
+ private:
+  static int param_value_;
+};
+int GeneratorEvaluationTest::param_value_ = 0;
+
+TEST_P(GeneratorEvaluationTest, GeneratorsEvaluatedInMain) {
+  EXPECT_EQ(1, GetParam());
+}
+INSTANTIATE_TEST_SUITE_P(GenEvalModule, GeneratorEvaluationTest,
+                         Values(GeneratorEvaluationTest::param_value()));
+
+// Tests that generators defined in a different translation unit are
+// functional. Generator extern_gen is defined in gtest-param-test_test2.cc.
+extern ParamGenerator<int> extern_gen;
+class ExternalGeneratorTest : public TestWithParam<int> {};
+TEST_P(ExternalGeneratorTest, ExternalGenerator) {
+  // Sequence produced by extern_gen contains only a single value
+  // which we verify here.
+  EXPECT_EQ(GetParam(), 33);
+}
+INSTANTIATE_TEST_SUITE_P(ExternalGeneratorModule, ExternalGeneratorTest,
+                         extern_gen);
+
+// Tests that a parameterized test case can be defined in one translation
+// unit and instantiated in another. This test will be instantiated in
+// gtest-param-test_test2.cc. ExternalInstantiationTest fixture class is
+// defined in gtest-param-test_test.h.
+TEST_P(ExternalInstantiationTest, IsMultipleOf33) {
+  EXPECT_EQ(0, GetParam() % 33);
+}
+
+// Tests that a parameterized test case can be instantiated with multiple
+// generators.
+class MultipleInstantiationTest : public TestWithParam<int> {};
+TEST_P(MultipleInstantiationTest, AllowsMultipleInstances) {
+}
+INSTANTIATE_TEST_SUITE_P(Sequence1, MultipleInstantiationTest, Values(1, 2));
+INSTANTIATE_TEST_SUITE_P(Sequence2, MultipleInstantiationTest, Range(3, 5));
+
+// Tests that a parameterized test case can be instantiated
+// in multiple translation units. This test will be instantiated
+// here and in gtest-param-test_test2.cc.
+// InstantiationInMultipleTranslationUnitsTest fixture class
+// is defined in gtest-param-test_test.h.
+TEST_P(InstantiationInMultipleTranslationUnitsTest, IsMultipleOf42) {
+  EXPECT_EQ(0, GetParam() % 42);
+}
+INSTANTIATE_TEST_SUITE_P(Sequence1, InstantiationInMultipleTranslationUnitsTest,
+                         Values(42, 42 * 2));
+
+// Tests that each iteration of parameterized test runs in a separate test
+// object.
+class SeparateInstanceTest : public TestWithParam<int> {
+ public:
+  SeparateInstanceTest() : count_(0) {}
+
+  static void TearDownTestSuite() {
+    EXPECT_GE(global_count_, 2)
+        << "If some (but not all) SeparateInstanceTest tests have been "
+        << "filtered out this test will fail. Make sure that all "
+        << "GeneratorEvaluationTest are selected or de-selected together "
+        << "by the test filter.";
+  }
+
+ protected:
+  int count_;
+  static int global_count_;
+};
+int SeparateInstanceTest::global_count_ = 0;
+
+TEST_P(SeparateInstanceTest, TestsRunInSeparateInstances) {
+  EXPECT_EQ(0, count_++);
+  global_count_++;
+}
+INSTANTIATE_TEST_SUITE_P(FourElemSequence, SeparateInstanceTest, Range(1, 4));
+
+// Tests that all instantiations of a test have named appropriately. Test
+// defined with TEST_P(TestSuiteName, TestName) and instantiated with
+// INSTANTIATE_TEST_SUITE_P(SequenceName, TestSuiteName, generator) must be
+// named SequenceName/TestSuiteName.TestName/i, where i is the 0-based index of
+// the sequence element used to instantiate the test.
+class NamingTest : public TestWithParam<int> {};
+
+TEST_P(NamingTest, TestsReportCorrectNamesAndParameters) {
+  const ::testing::TestInfo* const test_info =
+     ::testing::UnitTest::GetInstance()->current_test_info();
+
+  EXPECT_STREQ("ZeroToFiveSequence/NamingTest", test_info->test_suite_name());
+
+  Message index_stream;
+  index_stream << "TestsReportCorrectNamesAndParameters/" << GetParam();
+  EXPECT_STREQ(index_stream.GetString().c_str(), test_info->name());
+
+  EXPECT_EQ(::testing::PrintToString(GetParam()), test_info->value_param());
+}
+
+INSTANTIATE_TEST_SUITE_P(ZeroToFiveSequence, NamingTest, Range(0, 5));
+
+// Tests that macros in test names are expanded correctly.
+class MacroNamingTest : public TestWithParam<int> {};
+
+#define PREFIX_WITH_FOO(test_name) Foo##test_name
+#define PREFIX_WITH_MACRO(test_name) Macro##test_name
+
+TEST_P(PREFIX_WITH_MACRO(NamingTest), PREFIX_WITH_FOO(SomeTestName)) {
+  const ::testing::TestInfo* const test_info =
+     ::testing::UnitTest::GetInstance()->current_test_info();
+
+  EXPECT_STREQ("FortyTwo/MacroNamingTest", test_info->test_suite_name());
+  EXPECT_STREQ("FooSomeTestName", test_info->name());
+}
+
+INSTANTIATE_TEST_SUITE_P(FortyTwo, MacroNamingTest, Values(42));
+
+// Tests the same thing for non-parametrized tests.
+class MacroNamingTestNonParametrized : public ::testing::Test {};
+
+TEST_F(PREFIX_WITH_MACRO(NamingTestNonParametrized),
+       PREFIX_WITH_FOO(SomeTestName)) {
+  const ::testing::TestInfo* const test_info =
+     ::testing::UnitTest::GetInstance()->current_test_info();
+
+  EXPECT_STREQ("MacroNamingTestNonParametrized", test_info->test_suite_name());
+  EXPECT_STREQ("FooSomeTestName", test_info->name());
+}
+
+// Tests that user supplied custom parameter names are working correctly.
+// Runs the test with a builtin helper method which uses PrintToString,
+// as well as a custom function and custom functor to ensure all possible
+// uses work correctly.
+class CustomFunctorNamingTest : public TestWithParam<std::string> {};
+TEST_P(CustomFunctorNamingTest, CustomTestNames) {}
+
+struct CustomParamNameFunctor {
+  std::string operator()(const ::testing::TestParamInfo<std::string>& inf) {
+    return inf.param;
+  }
+};
+
+INSTANTIATE_TEST_SUITE_P(CustomParamNameFunctor, CustomFunctorNamingTest,
+                         Values(std::string("FunctorName")),
+                         CustomParamNameFunctor());
+
+INSTANTIATE_TEST_SUITE_P(AllAllowedCharacters, CustomFunctorNamingTest,
+                         Values("abcdefghijklmnopqrstuvwxyz",
+                                "ABCDEFGHIJKLMNOPQRSTUVWXYZ", "01234567890_"),
+                         CustomParamNameFunctor());
+
+inline std::string CustomParamNameFunction(
+    const ::testing::TestParamInfo<std::string>& inf) {
+  return inf.param;
+}
+
+class CustomFunctionNamingTest : public TestWithParam<std::string> {};
+TEST_P(CustomFunctionNamingTest, CustomTestNames) {}
+
+INSTANTIATE_TEST_SUITE_P(CustomParamNameFunction, CustomFunctionNamingTest,
+                         Values(std::string("FunctionName")),
+                         CustomParamNameFunction);
+
+INSTANTIATE_TEST_SUITE_P(CustomParamNameFunctionP, CustomFunctionNamingTest,
+                         Values(std::string("FunctionNameP")),
+                         &CustomParamNameFunction);
+
+// Test custom naming with a lambda
+
+class CustomLambdaNamingTest : public TestWithParam<std::string> {};
+TEST_P(CustomLambdaNamingTest, CustomTestNames) {}
+
+INSTANTIATE_TEST_SUITE_P(CustomParamNameLambda, CustomLambdaNamingTest,
+                         Values(std::string("LambdaName")),
+                         [](const ::testing::TestParamInfo<std::string>& inf) {
+                           return inf.param;
+                         });
+
+TEST(CustomNamingTest, CheckNameRegistry) {
+  ::testing::UnitTest* unit_test = ::testing::UnitTest::GetInstance();
+  std::set<std::string> test_names;
+  for (int suite_num = 0; suite_num < unit_test->total_test_suite_count();
+       ++suite_num) {
+    const ::testing::TestSuite* test_suite = unit_test->GetTestSuite(suite_num);
+    for (int test_num = 0; test_num < test_suite->total_test_count();
+         ++test_num) {
+      const ::testing::TestInfo* test_info = test_suite->GetTestInfo(test_num);
+      test_names.insert(std::string(test_info->name()));
+    }
+  }
+  EXPECT_EQ(1u, test_names.count("CustomTestNames/FunctorName"));
+  EXPECT_EQ(1u, test_names.count("CustomTestNames/FunctionName"));
+  EXPECT_EQ(1u, test_names.count("CustomTestNames/FunctionNameP"));
+  EXPECT_EQ(1u, test_names.count("CustomTestNames/LambdaName"));
+}
+
+// Test a numeric name to ensure PrintToStringParamName works correctly.
+
+class CustomIntegerNamingTest : public TestWithParam<int> {};
+
+TEST_P(CustomIntegerNamingTest, TestsReportCorrectNames) {
+  const ::testing::TestInfo* const test_info =
+     ::testing::UnitTest::GetInstance()->current_test_info();
+  Message test_name_stream;
+  test_name_stream << "TestsReportCorrectNames/" << GetParam();
+  EXPECT_STREQ(test_name_stream.GetString().c_str(), test_info->name());
+}
+
+INSTANTIATE_TEST_SUITE_P(PrintToString, CustomIntegerNamingTest, Range(0, 5),
+                         ::testing::PrintToStringParamName());
+
+// Test a custom struct with PrintToString.
+
+struct CustomStruct {
+  explicit CustomStruct(int value) : x(value) {}
+  int x;
+};
+
+std::ostream& operator<<(std::ostream& stream, const CustomStruct& val) {
+  stream << val.x;
+  return stream;
+}
+
+class CustomStructNamingTest : public TestWithParam<CustomStruct> {};
+
+TEST_P(CustomStructNamingTest, TestsReportCorrectNames) {
+  const ::testing::TestInfo* const test_info =
+     ::testing::UnitTest::GetInstance()->current_test_info();
+  Message test_name_stream;
+  test_name_stream << "TestsReportCorrectNames/" << GetParam();
+  EXPECT_STREQ(test_name_stream.GetString().c_str(), test_info->name());
+}
+
+INSTANTIATE_TEST_SUITE_P(PrintToString, CustomStructNamingTest,
+                         Values(CustomStruct(0), CustomStruct(1)),
+                         ::testing::PrintToStringParamName());
+
+// Test that using a stateful parameter naming function works as expected.
+
+struct StatefulNamingFunctor {
+  StatefulNamingFunctor() : sum(0) {}
+  std::string operator()(const ::testing::TestParamInfo<int>& info) {
+    int value = info.param + sum;
+    sum += info.param;
+    return ::testing::PrintToString(value);
+  }
+  int sum;
+};
+
+class StatefulNamingTest : public ::testing::TestWithParam<int> {
+ protected:
+  StatefulNamingTest() : sum_(0) {}
+  int sum_;
+};
+
+TEST_P(StatefulNamingTest, TestsReportCorrectNames) {
+  const ::testing::TestInfo* const test_info =
+     ::testing::UnitTest::GetInstance()->current_test_info();
+  sum_ += GetParam();
+  Message test_name_stream;
+  test_name_stream << "TestsReportCorrectNames/" << sum_;
+  EXPECT_STREQ(test_name_stream.GetString().c_str(), test_info->name());
+}
+
+INSTANTIATE_TEST_SUITE_P(StatefulNamingFunctor, StatefulNamingTest, Range(0, 5),
+                         StatefulNamingFunctor());
+
+// Class that cannot be streamed into an ostream.  It needs to be copyable
+// (and, in case of MSVC, also assignable) in order to be a test parameter
+// type.  Its default copy constructor and assignment operator do exactly
+// what we need.
+class Unstreamable {
+ public:
+  explicit Unstreamable(int value) : value_(value) {}
+  // -Wunused-private-field: dummy accessor for `value_`.
+  const int& dummy_value() const { return value_; }
+
+ private:
+  int value_;
+};
+
+class CommentTest : public TestWithParam<Unstreamable> {};
+
+TEST_P(CommentTest, TestsCorrectlyReportUnstreamableParams) {
+  const ::testing::TestInfo* const test_info =
+     ::testing::UnitTest::GetInstance()->current_test_info();
+
+  EXPECT_EQ(::testing::PrintToString(GetParam()), test_info->value_param());
+}
+
+INSTANTIATE_TEST_SUITE_P(InstantiationWithComments, CommentTest,
+                         Values(Unstreamable(1)));
+
+// Verify that we can create a hierarchy of test fixtures, where the base
+// class fixture is not parameterized and the derived class is. In this case
+// ParameterizedDerivedTest inherits from NonParameterizedBaseTest.  We
+// perform simple tests on both.
+class NonParameterizedBaseTest : public ::testing::Test {
+ public:
+  NonParameterizedBaseTest() : n_(17) { }
+ protected:
+  int n_;
+};
+
+class ParameterizedDerivedTest : public NonParameterizedBaseTest,
+                                 public ::testing::WithParamInterface<int> {
+ protected:
+  ParameterizedDerivedTest() : count_(0) { }
+  int count_;
+  static int global_count_;
+};
+
+int ParameterizedDerivedTest::global_count_ = 0;
+
+TEST_F(NonParameterizedBaseTest, FixtureIsInitialized) {
+  EXPECT_EQ(17, n_);
+}
+
+TEST_P(ParameterizedDerivedTest, SeesSequence) {
+  EXPECT_EQ(17, n_);
+  EXPECT_EQ(0, count_++);
+  EXPECT_EQ(GetParam(), global_count_++);
+}
+
+class ParameterizedDeathTest : public ::testing::TestWithParam<int> { };
+
+TEST_F(ParameterizedDeathTest, GetParamDiesFromTestF) {
+  EXPECT_DEATH_IF_SUPPORTED(GetParam(),
+                            ".* value-parameterized test .*");
+}
+
+INSTANTIATE_TEST_SUITE_P(RangeZeroToFive, ParameterizedDerivedTest,
+                         Range(0, 5));
+
+// Tests param generator working with Enums
+enum MyEnums {
+  ENUM1 = 1,
+  ENUM2 = 3,
+  ENUM3 = 8,
+};
+
+class MyEnumTest : public testing::TestWithParam<MyEnums> {};
+
+TEST_P(MyEnumTest, ChecksParamMoreThanZero) { EXPECT_GE(10, GetParam()); }
+INSTANTIATE_TEST_SUITE_P(MyEnumTests, MyEnumTest,
+                         ::testing::Values(ENUM1, ENUM2, 0));
+
+int main(int argc, char **argv) {
+  // Used in TestGenerationTest test suite.
+  AddGlobalTestEnvironment(TestGenerationTest::Environment::Instance());
+  // Used in GeneratorEvaluationTest test suite. Tests that the updated value
+  // will be picked up for instantiating tests in GeneratorEvaluationTest.
+  GeneratorEvaluationTest::set_param_value(1);
+
+  ::testing::InitGoogleTest(&argc, argv);
+
+  // Used in GeneratorEvaluationTest test suite. Tests that value updated
+  // here will NOT be used for instantiating tests in
+  // GeneratorEvaluationTest.
+  GeneratorEvaluationTest::set_param_value(2);
+
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googletest/test/googletest-param-test-test.h b/build/_deps/googletest-src/googletest/test/googletest-param-test-test.h
new file mode 100644
index 0000000000000000000000000000000000000000..648057017e840ddc07080e0cf937c51e74429981
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-param-test-test.h
@@ -0,0 +1,51 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This header file provides classes and functions used internally
+// for testing Google Test itself.
+
+#ifndef GTEST_TEST_GTEST_PARAM_TEST_TEST_H_
+#define GTEST_TEST_GTEST_PARAM_TEST_TEST_H_
+
+#include "gtest/gtest.h"
+
+// Test fixture for testing definition and instantiation of a test
+// in separate translation units.
+class ExternalInstantiationTest : public ::testing::TestWithParam<int> {
+};
+
+// Test fixture for testing instantiation of a test in multiple
+// translation units.
+class InstantiationInMultipleTranslationUnitsTest
+    : public ::testing::TestWithParam<int> {
+};
+
+#endif  // GTEST_TEST_GTEST_PARAM_TEST_TEST_H_
diff --git a/build/_deps/googletest-src/googletest/test/googletest-param-test2-test.cc b/build/_deps/googletest-src/googletest/test/googletest-param-test2-test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2a29fb1d0686e2a4ec7c67c8912ff6a38f89ccd0
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-param-test2-test.cc
@@ -0,0 +1,61 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Tests for Google Test itself.  This verifies that the basic constructs of
+// Google Test work.
+
+#include "gtest/gtest.h"
+#include "test/googletest-param-test-test.h"
+
+using ::testing::Values;
+using ::testing::internal::ParamGenerator;
+
+// Tests that generators defined in a different translation unit
+// are functional. The test using extern_gen is defined
+// in googletest-param-test-test.cc.
+ParamGenerator<int> extern_gen = Values(33);
+
+// Tests that a parameterized test case can be defined in one translation unit
+// and instantiated in another. The test is defined in
+// googletest-param-test-test.cc and ExternalInstantiationTest fixture class is
+// defined in gtest-param-test_test.h.
+INSTANTIATE_TEST_SUITE_P(MultiplesOf33,
+                         ExternalInstantiationTest,
+                         Values(33, 66));
+
+// Tests that a parameterized test case can be instantiated
+// in multiple translation units. Another instantiation is defined
+// in googletest-param-test-test.cc and
+// InstantiationInMultipleTranslationUnitsTest fixture is defined in
+// gtest-param-test_test.h
+INSTANTIATE_TEST_SUITE_P(Sequence2,
+                         InstantiationInMultipleTranslationUnitsTest,
+                         Values(42*3, 42*4, 42*5));
+
diff --git a/build/_deps/googletest-src/googletest/test/googletest-port-test.cc b/build/_deps/googletest-src/googletest/test/googletest-port-test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..60d637c32f63369ff7c6eb9d25e12b11504193f3
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-port-test.cc
@@ -0,0 +1,1272 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// This file tests the internal cross-platform support utilities.
+#include <stdio.h>
+
+#include "gtest/internal/gtest-port.h"
+
+#if GTEST_OS_MAC
+# include <time.h>
+#endif  // GTEST_OS_MAC
+
+#include <list>
+#include <memory>
+#include <utility>  // For std::pair and std::make_pair.
+#include <vector>
+
+#include "gtest/gtest.h"
+#include "gtest/gtest-spi.h"
+#include "src/gtest-internal-inl.h"
+
+using std::make_pair;
+using std::pair;
+
+namespace testing {
+namespace internal {
+
+TEST(IsXDigitTest, WorksForNarrowAscii) {
+  EXPECT_TRUE(IsXDigit('0'));
+  EXPECT_TRUE(IsXDigit('9'));
+  EXPECT_TRUE(IsXDigit('A'));
+  EXPECT_TRUE(IsXDigit('F'));
+  EXPECT_TRUE(IsXDigit('a'));
+  EXPECT_TRUE(IsXDigit('f'));
+
+  EXPECT_FALSE(IsXDigit('-'));
+  EXPECT_FALSE(IsXDigit('g'));
+  EXPECT_FALSE(IsXDigit('G'));
+}
+
+TEST(IsXDigitTest, ReturnsFalseForNarrowNonAscii) {
+  EXPECT_FALSE(IsXDigit(static_cast<char>('\x80')));
+  EXPECT_FALSE(IsXDigit(static_cast<char>('0' | '\x80')));
+}
+
+TEST(IsXDigitTest, WorksForWideAscii) {
+  EXPECT_TRUE(IsXDigit(L'0'));
+  EXPECT_TRUE(IsXDigit(L'9'));
+  EXPECT_TRUE(IsXDigit(L'A'));
+  EXPECT_TRUE(IsXDigit(L'F'));
+  EXPECT_TRUE(IsXDigit(L'a'));
+  EXPECT_TRUE(IsXDigit(L'f'));
+
+  EXPECT_FALSE(IsXDigit(L'-'));
+  EXPECT_FALSE(IsXDigit(L'g'));
+  EXPECT_FALSE(IsXDigit(L'G'));
+}
+
+TEST(IsXDigitTest, ReturnsFalseForWideNonAscii) {
+  EXPECT_FALSE(IsXDigit(static_cast<wchar_t>(0x80)));
+  EXPECT_FALSE(IsXDigit(static_cast<wchar_t>(L'0' | 0x80)));
+  EXPECT_FALSE(IsXDigit(static_cast<wchar_t>(L'0' | 0x100)));
+}
+
+class Base {
+ public:
+  // Copy constructor and assignment operator do exactly what we need, so we
+  // use them.
+  Base() : member_(0) {}
+  explicit Base(int n) : member_(n) {}
+  virtual ~Base() {}
+  int member() { return member_; }
+
+ private:
+  int member_;
+};
+
+class Derived : public Base {
+ public:
+  explicit Derived(int n) : Base(n) {}
+};
+
+TEST(ImplicitCastTest, ConvertsPointers) {
+  Derived derived(0);
+  EXPECT_TRUE(&derived == ::testing::internal::ImplicitCast_<Base*>(&derived));
+}
+
+TEST(ImplicitCastTest, CanUseInheritance) {
+  Derived derived(1);
+  Base base = ::testing::internal::ImplicitCast_<Base>(derived);
+  EXPECT_EQ(derived.member(), base.member());
+}
+
+class Castable {
+ public:
+  explicit Castable(bool* converted) : converted_(converted) {}
+  operator Base() {
+    *converted_ = true;
+    return Base();
+  }
+
+ private:
+  bool* converted_;
+};
+
+TEST(ImplicitCastTest, CanUseNonConstCastOperator) {
+  bool converted = false;
+  Castable castable(&converted);
+  Base base = ::testing::internal::ImplicitCast_<Base>(castable);
+  EXPECT_TRUE(converted);
+}
+
+class ConstCastable {
+ public:
+  explicit ConstCastable(bool* converted) : converted_(converted) {}
+  operator Base() const {
+    *converted_ = true;
+    return Base();
+  }
+
+ private:
+  bool* converted_;
+};
+
+TEST(ImplicitCastTest, CanUseConstCastOperatorOnConstValues) {
+  bool converted = false;
+  const ConstCastable const_castable(&converted);
+  Base base = ::testing::internal::ImplicitCast_<Base>(const_castable);
+  EXPECT_TRUE(converted);
+}
+
+class ConstAndNonConstCastable {
+ public:
+  ConstAndNonConstCastable(bool* converted, bool* const_converted)
+      : converted_(converted), const_converted_(const_converted) {}
+  operator Base() {
+    *converted_ = true;
+    return Base();
+  }
+  operator Base() const {
+    *const_converted_ = true;
+    return Base();
+  }
+
+ private:
+  bool* converted_;
+  bool* const_converted_;
+};
+
+TEST(ImplicitCastTest, CanSelectBetweenConstAndNonConstCasrAppropriately) {
+  bool converted = false;
+  bool const_converted = false;
+  ConstAndNonConstCastable castable(&converted, &const_converted);
+  Base base = ::testing::internal::ImplicitCast_<Base>(castable);
+  EXPECT_TRUE(converted);
+  EXPECT_FALSE(const_converted);
+
+  converted = false;
+  const_converted = false;
+  const ConstAndNonConstCastable const_castable(&converted, &const_converted);
+  base = ::testing::internal::ImplicitCast_<Base>(const_castable);
+  EXPECT_FALSE(converted);
+  EXPECT_TRUE(const_converted);
+}
+
+class To {
+ public:
+  To(bool* converted) { *converted = true; }  // NOLINT
+};
+
+TEST(ImplicitCastTest, CanUseImplicitConstructor) {
+  bool converted = false;
+  To to = ::testing::internal::ImplicitCast_<To>(&converted);
+  (void)to;
+  EXPECT_TRUE(converted);
+}
+
+TEST(GtestCheckSyntaxTest, BehavesLikeASingleStatement) {
+  if (AlwaysFalse())
+    GTEST_CHECK_(false) << "This should never be executed; "
+                           "It's a compilation test only.";
+
+  if (AlwaysTrue())
+    GTEST_CHECK_(true);
+  else
+    ;  // NOLINT
+
+  if (AlwaysFalse())
+    ;  // NOLINT
+  else
+    GTEST_CHECK_(true) << "";
+}
+
+TEST(GtestCheckSyntaxTest, WorksWithSwitch) {
+  switch (0) {
+    case 1:
+      break;
+    default:
+      GTEST_CHECK_(true);
+  }
+
+  switch (0)
+    case 0:
+      GTEST_CHECK_(true) << "Check failed in switch case";
+}
+
+// Verifies behavior of FormatFileLocation.
+TEST(FormatFileLocationTest, FormatsFileLocation) {
+  EXPECT_PRED_FORMAT2(IsSubstring, "foo.cc", FormatFileLocation("foo.cc", 42));
+  EXPECT_PRED_FORMAT2(IsSubstring, "42", FormatFileLocation("foo.cc", 42));
+}
+
+TEST(FormatFileLocationTest, FormatsUnknownFile) {
+  EXPECT_PRED_FORMAT2(IsSubstring, "unknown file",
+                      FormatFileLocation(nullptr, 42));
+  EXPECT_PRED_FORMAT2(IsSubstring, "42", FormatFileLocation(nullptr, 42));
+}
+
+TEST(FormatFileLocationTest, FormatsUknownLine) {
+  EXPECT_EQ("foo.cc:", FormatFileLocation("foo.cc", -1));
+}
+
+TEST(FormatFileLocationTest, FormatsUknownFileAndLine) {
+  EXPECT_EQ("unknown file:", FormatFileLocation(nullptr, -1));
+}
+
+// Verifies behavior of FormatCompilerIndependentFileLocation.
+TEST(FormatCompilerIndependentFileLocationTest, FormatsFileLocation) {
+  EXPECT_EQ("foo.cc:42", FormatCompilerIndependentFileLocation("foo.cc", 42));
+}
+
+TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownFile) {
+  EXPECT_EQ("unknown file:42",
+            FormatCompilerIndependentFileLocation(nullptr, 42));
+}
+
+TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownLine) {
+  EXPECT_EQ("foo.cc", FormatCompilerIndependentFileLocation("foo.cc", -1));
+}
+
+TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownFileAndLine) {
+  EXPECT_EQ("unknown file", FormatCompilerIndependentFileLocation(nullptr, -1));
+}
+
+#if GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_QNX || GTEST_OS_FUCHSIA || \
+    GTEST_OS_DRAGONFLY || GTEST_OS_FREEBSD || GTEST_OS_GNU_KFREEBSD || \
+    GTEST_OS_NETBSD || GTEST_OS_OPENBSD
+void* ThreadFunc(void* data) {
+  internal::Mutex* mutex = static_cast<internal::Mutex*>(data);
+  mutex->Lock();
+  mutex->Unlock();
+  return nullptr;
+}
+
+TEST(GetThreadCountTest, ReturnsCorrectValue) {
+  const size_t starting_count = GetThreadCount();
+  pthread_t       thread_id;
+
+  internal::Mutex mutex;
+  {
+    internal::MutexLock lock(&mutex);
+    pthread_attr_t  attr;
+    ASSERT_EQ(0, pthread_attr_init(&attr));
+    ASSERT_EQ(0, pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE));
+
+    const int status = pthread_create(&thread_id, &attr, &ThreadFunc, &mutex);
+    ASSERT_EQ(0, pthread_attr_destroy(&attr));
+    ASSERT_EQ(0, status);
+    EXPECT_EQ(starting_count + 1, GetThreadCount());
+  }
+
+  void* dummy;
+  ASSERT_EQ(0, pthread_join(thread_id, &dummy));
+
+  // The OS may not immediately report the updated thread count after
+  // joining a thread, causing flakiness in this test. To counter that, we
+  // wait for up to .5 seconds for the OS to report the correct value.
+  for (int i = 0; i < 5; ++i) {
+    if (GetThreadCount() == starting_count)
+      break;
+
+    SleepMilliseconds(100);
+  }
+
+  EXPECT_EQ(starting_count, GetThreadCount());
+}
+#else
+TEST(GetThreadCountTest, ReturnsZeroWhenUnableToCountThreads) {
+  EXPECT_EQ(0U, GetThreadCount());
+}
+#endif  // GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_QNX || GTEST_OS_FUCHSIA
+
+TEST(GtestCheckDeathTest, DiesWithCorrectOutputOnFailure) {
+  const bool a_false_condition = false;
+  const char regex[] =
+#ifdef _MSC_VER
+     "googletest-port-test\\.cc\\(\\d+\\):"
+#elif GTEST_USES_POSIX_RE
+     "googletest-port-test\\.cc:[0-9]+"
+#else
+     "googletest-port-test\\.cc:\\d+"
+#endif  // _MSC_VER
+     ".*a_false_condition.*Extra info.*";
+
+  EXPECT_DEATH_IF_SUPPORTED(GTEST_CHECK_(a_false_condition) << "Extra info",
+                            regex);
+}
+
+#if GTEST_HAS_DEATH_TEST
+
+TEST(GtestCheckDeathTest, LivesSilentlyOnSuccess) {
+  EXPECT_EXIT({
+      GTEST_CHECK_(true) << "Extra info";
+      ::std::cerr << "Success\n";
+      exit(0); },
+      ::testing::ExitedWithCode(0), "Success");
+}
+
+#endif  // GTEST_HAS_DEATH_TEST
+
+// Verifies that Google Test choose regular expression engine appropriate to
+// the platform. The test will produce compiler errors in case of failure.
+// For simplicity, we only cover the most important platforms here.
+TEST(RegexEngineSelectionTest, SelectsCorrectRegexEngine) {
+#if !GTEST_USES_PCRE
+# if GTEST_HAS_POSIX_RE
+
+  EXPECT_TRUE(GTEST_USES_POSIX_RE);
+
+# else
+
+  EXPECT_TRUE(GTEST_USES_SIMPLE_RE);
+
+# endif
+#endif  // !GTEST_USES_PCRE
+}
+
+#if GTEST_USES_POSIX_RE
+
+# if GTEST_HAS_TYPED_TEST
+
+template <typename Str>
+class RETest : public ::testing::Test {};
+
+// Defines StringTypes as the list of all string types that class RE
+// supports.
+typedef testing::Types< ::std::string, const char*> StringTypes;
+
+TYPED_TEST_SUITE(RETest, StringTypes);
+
+// Tests RE's implicit constructors.
+TYPED_TEST(RETest, ImplicitConstructorWorks) {
+  const RE empty(TypeParam(""));
+  EXPECT_STREQ("", empty.pattern());
+
+  const RE simple(TypeParam("hello"));
+  EXPECT_STREQ("hello", simple.pattern());
+
+  const RE normal(TypeParam(".*(\\w+)"));
+  EXPECT_STREQ(".*(\\w+)", normal.pattern());
+}
+
+// Tests that RE's constructors reject invalid regular expressions.
+TYPED_TEST(RETest, RejectsInvalidRegex) {
+  EXPECT_NONFATAL_FAILURE({
+    const RE invalid(TypeParam("?"));
+  }, "\"?\" is not a valid POSIX Extended regular expression.");
+}
+
+// Tests RE::FullMatch().
+TYPED_TEST(RETest, FullMatchWorks) {
+  const RE empty(TypeParam(""));
+  EXPECT_TRUE(RE::FullMatch(TypeParam(""), empty));
+  EXPECT_FALSE(RE::FullMatch(TypeParam("a"), empty));
+
+  const RE re(TypeParam("a.*z"));
+  EXPECT_TRUE(RE::FullMatch(TypeParam("az"), re));
+  EXPECT_TRUE(RE::FullMatch(TypeParam("axyz"), re));
+  EXPECT_FALSE(RE::FullMatch(TypeParam("baz"), re));
+  EXPECT_FALSE(RE::FullMatch(TypeParam("azy"), re));
+}
+
+// Tests RE::PartialMatch().
+TYPED_TEST(RETest, PartialMatchWorks) {
+  const RE empty(TypeParam(""));
+  EXPECT_TRUE(RE::PartialMatch(TypeParam(""), empty));
+  EXPECT_TRUE(RE::PartialMatch(TypeParam("a"), empty));
+
+  const RE re(TypeParam("a.*z"));
+  EXPECT_TRUE(RE::PartialMatch(TypeParam("az"), re));
+  EXPECT_TRUE(RE::PartialMatch(TypeParam("axyz"), re));
+  EXPECT_TRUE(RE::PartialMatch(TypeParam("baz"), re));
+  EXPECT_TRUE(RE::PartialMatch(TypeParam("azy"), re));
+  EXPECT_FALSE(RE::PartialMatch(TypeParam("zza"), re));
+}
+
+# endif  // GTEST_HAS_TYPED_TEST
+
+#elif GTEST_USES_SIMPLE_RE
+
+TEST(IsInSetTest, NulCharIsNotInAnySet) {
+  EXPECT_FALSE(IsInSet('\0', ""));
+  EXPECT_FALSE(IsInSet('\0', "\0"));
+  EXPECT_FALSE(IsInSet('\0', "a"));
+}
+
+TEST(IsInSetTest, WorksForNonNulChars) {
+  EXPECT_FALSE(IsInSet('a', "Ab"));
+  EXPECT_FALSE(IsInSet('c', ""));
+
+  EXPECT_TRUE(IsInSet('b', "bcd"));
+  EXPECT_TRUE(IsInSet('b', "ab"));
+}
+
+TEST(IsAsciiDigitTest, IsFalseForNonDigit) {
+  EXPECT_FALSE(IsAsciiDigit('\0'));
+  EXPECT_FALSE(IsAsciiDigit(' '));
+  EXPECT_FALSE(IsAsciiDigit('+'));
+  EXPECT_FALSE(IsAsciiDigit('-'));
+  EXPECT_FALSE(IsAsciiDigit('.'));
+  EXPECT_FALSE(IsAsciiDigit('a'));
+}
+
+TEST(IsAsciiDigitTest, IsTrueForDigit) {
+  EXPECT_TRUE(IsAsciiDigit('0'));
+  EXPECT_TRUE(IsAsciiDigit('1'));
+  EXPECT_TRUE(IsAsciiDigit('5'));
+  EXPECT_TRUE(IsAsciiDigit('9'));
+}
+
+TEST(IsAsciiPunctTest, IsFalseForNonPunct) {
+  EXPECT_FALSE(IsAsciiPunct('\0'));
+  EXPECT_FALSE(IsAsciiPunct(' '));
+  EXPECT_FALSE(IsAsciiPunct('\n'));
+  EXPECT_FALSE(IsAsciiPunct('a'));
+  EXPECT_FALSE(IsAsciiPunct('0'));
+}
+
+TEST(IsAsciiPunctTest, IsTrueForPunct) {
+  for (const char* p = "^-!\"#$%&'()*+,./:;<=>?@[\\]_`{|}~"; *p; p++) {
+    EXPECT_PRED1(IsAsciiPunct, *p);
+  }
+}
+
+TEST(IsRepeatTest, IsFalseForNonRepeatChar) {
+  EXPECT_FALSE(IsRepeat('\0'));
+  EXPECT_FALSE(IsRepeat(' '));
+  EXPECT_FALSE(IsRepeat('a'));
+  EXPECT_FALSE(IsRepeat('1'));
+  EXPECT_FALSE(IsRepeat('-'));
+}
+
+TEST(IsRepeatTest, IsTrueForRepeatChar) {
+  EXPECT_TRUE(IsRepeat('?'));
+  EXPECT_TRUE(IsRepeat('*'));
+  EXPECT_TRUE(IsRepeat('+'));
+}
+
+TEST(IsAsciiWhiteSpaceTest, IsFalseForNonWhiteSpace) {
+  EXPECT_FALSE(IsAsciiWhiteSpace('\0'));
+  EXPECT_FALSE(IsAsciiWhiteSpace('a'));
+  EXPECT_FALSE(IsAsciiWhiteSpace('1'));
+  EXPECT_FALSE(IsAsciiWhiteSpace('+'));
+  EXPECT_FALSE(IsAsciiWhiteSpace('_'));
+}
+
+TEST(IsAsciiWhiteSpaceTest, IsTrueForWhiteSpace) {
+  EXPECT_TRUE(IsAsciiWhiteSpace(' '));
+  EXPECT_TRUE(IsAsciiWhiteSpace('\n'));
+  EXPECT_TRUE(IsAsciiWhiteSpace('\r'));
+  EXPECT_TRUE(IsAsciiWhiteSpace('\t'));
+  EXPECT_TRUE(IsAsciiWhiteSpace('\v'));
+  EXPECT_TRUE(IsAsciiWhiteSpace('\f'));
+}
+
+TEST(IsAsciiWordCharTest, IsFalseForNonWordChar) {
+  EXPECT_FALSE(IsAsciiWordChar('\0'));
+  EXPECT_FALSE(IsAsciiWordChar('+'));
+  EXPECT_FALSE(IsAsciiWordChar('.'));
+  EXPECT_FALSE(IsAsciiWordChar(' '));
+  EXPECT_FALSE(IsAsciiWordChar('\n'));
+}
+
+TEST(IsAsciiWordCharTest, IsTrueForLetter) {
+  EXPECT_TRUE(IsAsciiWordChar('a'));
+  EXPECT_TRUE(IsAsciiWordChar('b'));
+  EXPECT_TRUE(IsAsciiWordChar('A'));
+  EXPECT_TRUE(IsAsciiWordChar('Z'));
+}
+
+TEST(IsAsciiWordCharTest, IsTrueForDigit) {
+  EXPECT_TRUE(IsAsciiWordChar('0'));
+  EXPECT_TRUE(IsAsciiWordChar('1'));
+  EXPECT_TRUE(IsAsciiWordChar('7'));
+  EXPECT_TRUE(IsAsciiWordChar('9'));
+}
+
+TEST(IsAsciiWordCharTest, IsTrueForUnderscore) {
+  EXPECT_TRUE(IsAsciiWordChar('_'));
+}
+
+TEST(IsValidEscapeTest, IsFalseForNonPrintable) {
+  EXPECT_FALSE(IsValidEscape('\0'));
+  EXPECT_FALSE(IsValidEscape('\007'));
+}
+
+TEST(IsValidEscapeTest, IsFalseForDigit) {
+  EXPECT_FALSE(IsValidEscape('0'));
+  EXPECT_FALSE(IsValidEscape('9'));
+}
+
+TEST(IsValidEscapeTest, IsFalseForWhiteSpace) {
+  EXPECT_FALSE(IsValidEscape(' '));
+  EXPECT_FALSE(IsValidEscape('\n'));
+}
+
+TEST(IsValidEscapeTest, IsFalseForSomeLetter) {
+  EXPECT_FALSE(IsValidEscape('a'));
+  EXPECT_FALSE(IsValidEscape('Z'));
+}
+
+TEST(IsValidEscapeTest, IsTrueForPunct) {
+  EXPECT_TRUE(IsValidEscape('.'));
+  EXPECT_TRUE(IsValidEscape('-'));
+  EXPECT_TRUE(IsValidEscape('^'));
+  EXPECT_TRUE(IsValidEscape('$'));
+  EXPECT_TRUE(IsValidEscape('('));
+  EXPECT_TRUE(IsValidEscape(']'));
+  EXPECT_TRUE(IsValidEscape('{'));
+  EXPECT_TRUE(IsValidEscape('|'));
+}
+
+TEST(IsValidEscapeTest, IsTrueForSomeLetter) {
+  EXPECT_TRUE(IsValidEscape('d'));
+  EXPECT_TRUE(IsValidEscape('D'));
+  EXPECT_TRUE(IsValidEscape('s'));
+  EXPECT_TRUE(IsValidEscape('S'));
+  EXPECT_TRUE(IsValidEscape('w'));
+  EXPECT_TRUE(IsValidEscape('W'));
+}
+
+TEST(AtomMatchesCharTest, EscapedPunct) {
+  EXPECT_FALSE(AtomMatchesChar(true, '\\', '\0'));
+  EXPECT_FALSE(AtomMatchesChar(true, '\\', ' '));
+  EXPECT_FALSE(AtomMatchesChar(true, '_', '.'));
+  EXPECT_FALSE(AtomMatchesChar(true, '.', 'a'));
+
+  EXPECT_TRUE(AtomMatchesChar(true, '\\', '\\'));
+  EXPECT_TRUE(AtomMatchesChar(true, '_', '_'));
+  EXPECT_TRUE(AtomMatchesChar(true, '+', '+'));
+  EXPECT_TRUE(AtomMatchesChar(true, '.', '.'));
+}
+
+TEST(AtomMatchesCharTest, Escaped_d) {
+  EXPECT_FALSE(AtomMatchesChar(true, 'd', '\0'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'd', 'a'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'd', '.'));
+
+  EXPECT_TRUE(AtomMatchesChar(true, 'd', '0'));
+  EXPECT_TRUE(AtomMatchesChar(true, 'd', '9'));
+}
+
+TEST(AtomMatchesCharTest, Escaped_D) {
+  EXPECT_FALSE(AtomMatchesChar(true, 'D', '0'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'D', '9'));
+
+  EXPECT_TRUE(AtomMatchesChar(true, 'D', '\0'));
+  EXPECT_TRUE(AtomMatchesChar(true, 'D', 'a'));
+  EXPECT_TRUE(AtomMatchesChar(true, 'D', '-'));
+}
+
+TEST(AtomMatchesCharTest, Escaped_s) {
+  EXPECT_FALSE(AtomMatchesChar(true, 's', '\0'));
+  EXPECT_FALSE(AtomMatchesChar(true, 's', 'a'));
+  EXPECT_FALSE(AtomMatchesChar(true, 's', '.'));
+  EXPECT_FALSE(AtomMatchesChar(true, 's', '9'));
+
+  EXPECT_TRUE(AtomMatchesChar(true, 's', ' '));
+  EXPECT_TRUE(AtomMatchesChar(true, 's', '\n'));
+  EXPECT_TRUE(AtomMatchesChar(true, 's', '\t'));
+}
+
+TEST(AtomMatchesCharTest, Escaped_S) {
+  EXPECT_FALSE(AtomMatchesChar(true, 'S', ' '));
+  EXPECT_FALSE(AtomMatchesChar(true, 'S', '\r'));
+
+  EXPECT_TRUE(AtomMatchesChar(true, 'S', '\0'));
+  EXPECT_TRUE(AtomMatchesChar(true, 'S', 'a'));
+  EXPECT_TRUE(AtomMatchesChar(true, 'S', '9'));
+}
+
+TEST(AtomMatchesCharTest, Escaped_w) {
+  EXPECT_FALSE(AtomMatchesChar(true, 'w', '\0'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'w', '+'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'w', ' '));
+  EXPECT_FALSE(AtomMatchesChar(true, 'w', '\n'));
+
+  EXPECT_TRUE(AtomMatchesChar(true, 'w', '0'));
+  EXPECT_TRUE(AtomMatchesChar(true, 'w', 'b'));
+  EXPECT_TRUE(AtomMatchesChar(true, 'w', 'C'));
+  EXPECT_TRUE(AtomMatchesChar(true, 'w', '_'));
+}
+
+TEST(AtomMatchesCharTest, Escaped_W) {
+  EXPECT_FALSE(AtomMatchesChar(true, 'W', 'A'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'W', 'b'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'W', '9'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'W', '_'));
+
+  EXPECT_TRUE(AtomMatchesChar(true, 'W', '\0'));
+  EXPECT_TRUE(AtomMatchesChar(true, 'W', '*'));
+  EXPECT_TRUE(AtomMatchesChar(true, 'W', '\n'));
+}
+
+TEST(AtomMatchesCharTest, EscapedWhiteSpace) {
+  EXPECT_FALSE(AtomMatchesChar(true, 'f', '\0'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'f', '\n'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'n', '\0'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'n', '\r'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'r', '\0'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'r', 'a'));
+  EXPECT_FALSE(AtomMatchesChar(true, 't', '\0'));
+  EXPECT_FALSE(AtomMatchesChar(true, 't', 't'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'v', '\0'));
+  EXPECT_FALSE(AtomMatchesChar(true, 'v', '\f'));
+
+  EXPECT_TRUE(AtomMatchesChar(true, 'f', '\f'));
+  EXPECT_TRUE(AtomMatchesChar(true, 'n', '\n'));
+  EXPECT_TRUE(AtomMatchesChar(true, 'r', '\r'));
+  EXPECT_TRUE(AtomMatchesChar(true, 't', '\t'));
+  EXPECT_TRUE(AtomMatchesChar(true, 'v', '\v'));
+}
+
+TEST(AtomMatchesCharTest, UnescapedDot) {
+  EXPECT_FALSE(AtomMatchesChar(false, '.', '\n'));
+
+  EXPECT_TRUE(AtomMatchesChar(false, '.', '\0'));
+  EXPECT_TRUE(AtomMatchesChar(false, '.', '.'));
+  EXPECT_TRUE(AtomMatchesChar(false, '.', 'a'));
+  EXPECT_TRUE(AtomMatchesChar(false, '.', ' '));
+}
+
+TEST(AtomMatchesCharTest, UnescapedChar) {
+  EXPECT_FALSE(AtomMatchesChar(false, 'a', '\0'));
+  EXPECT_FALSE(AtomMatchesChar(false, 'a', 'b'));
+  EXPECT_FALSE(AtomMatchesChar(false, '$', 'a'));
+
+  EXPECT_TRUE(AtomMatchesChar(false, '$', '$'));
+  EXPECT_TRUE(AtomMatchesChar(false, '5', '5'));
+  EXPECT_TRUE(AtomMatchesChar(false, 'Z', 'Z'));
+}
+
+TEST(ValidateRegexTest, GeneratesFailureAndReturnsFalseForInvalid) {
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex(NULL)),
+                          "NULL is not a valid simple regular expression");
+  EXPECT_NONFATAL_FAILURE(
+      ASSERT_FALSE(ValidateRegex("a\\")),
+      "Syntax error at index 1 in simple regular expression \"a\\\": ");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("a\\")),
+                          "'\\' cannot appear at the end");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("\\n\\")),
+                          "'\\' cannot appear at the end");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("\\s\\hb")),
+                          "invalid escape sequence \"\\h\"");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("^^")),
+                          "'^' can only appear at the beginning");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex(".*^b")),
+                          "'^' can only appear at the beginning");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("$$")),
+                          "'$' can only appear at the end");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("^$a")),
+                          "'$' can only appear at the end");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("a(b")),
+                          "'(' is unsupported");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("ab)")),
+                          "')' is unsupported");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("[ab")),
+                          "'[' is unsupported");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("a{2")),
+                          "'{' is unsupported");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("?")),
+                          "'?' can only follow a repeatable token");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("^*")),
+                          "'*' can only follow a repeatable token");
+  EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("5*+")),
+                          "'+' can only follow a repeatable token");
+}
+
+TEST(ValidateRegexTest, ReturnsTrueForValid) {
+  EXPECT_TRUE(ValidateRegex(""));
+  EXPECT_TRUE(ValidateRegex("a"));
+  EXPECT_TRUE(ValidateRegex(".*"));
+  EXPECT_TRUE(ValidateRegex("^a_+"));
+  EXPECT_TRUE(ValidateRegex("^a\\t\\&?"));
+  EXPECT_TRUE(ValidateRegex("09*$"));
+  EXPECT_TRUE(ValidateRegex("^Z$"));
+  EXPECT_TRUE(ValidateRegex("a\\^Z\\$\\(\\)\\|\\[\\]\\{\\}"));
+}
+
+TEST(MatchRepetitionAndRegexAtHeadTest, WorksForZeroOrOne) {
+  EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, 'a', '?', "a", "ba"));
+  // Repeating more than once.
+  EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, 'a', '?', "b", "aab"));
+
+  // Repeating zero times.
+  EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, 'a', '?', "b", "ba"));
+  // Repeating once.
+  EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, 'a', '?', "b", "ab"));
+  EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, '#', '?', ".", "##"));
+}
+
+TEST(MatchRepetitionAndRegexAtHeadTest, WorksForZeroOrMany) {
+  EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, '.', '*', "a$", "baab"));
+
+  // Repeating zero times.
+  EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, '.', '*', "b", "bc"));
+  // Repeating once.
+  EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, '.', '*', "b", "abc"));
+  // Repeating more than once.
+  EXPECT_TRUE(MatchRepetitionAndRegexAtHead(true, 'w', '*', "-", "ab_1-g"));
+}
+
+TEST(MatchRepetitionAndRegexAtHeadTest, WorksForOneOrMany) {
+  EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, '.', '+', "a$", "baab"));
+  // Repeating zero times.
+  EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, '.', '+', "b", "bc"));
+
+  // Repeating once.
+  EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, '.', '+', "b", "abc"));
+  // Repeating more than once.
+  EXPECT_TRUE(MatchRepetitionAndRegexAtHead(true, 'w', '+', "-", "ab_1-g"));
+}
+
+TEST(MatchRegexAtHeadTest, ReturnsTrueForEmptyRegex) {
+  EXPECT_TRUE(MatchRegexAtHead("", ""));
+  EXPECT_TRUE(MatchRegexAtHead("", "ab"));
+}
+
+TEST(MatchRegexAtHeadTest, WorksWhenDollarIsInRegex) {
+  EXPECT_FALSE(MatchRegexAtHead("$", "a"));
+
+  EXPECT_TRUE(MatchRegexAtHead("$", ""));
+  EXPECT_TRUE(MatchRegexAtHead("a$", "a"));
+}
+
+TEST(MatchRegexAtHeadTest, WorksWhenRegexStartsWithEscapeSequence) {
+  EXPECT_FALSE(MatchRegexAtHead("\\w", "+"));
+  EXPECT_FALSE(MatchRegexAtHead("\\W", "ab"));
+
+  EXPECT_TRUE(MatchRegexAtHead("\\sa", "\nab"));
+  EXPECT_TRUE(MatchRegexAtHead("\\d", "1a"));
+}
+
+TEST(MatchRegexAtHeadTest, WorksWhenRegexStartsWithRepetition) {
+  EXPECT_FALSE(MatchRegexAtHead(".+a", "abc"));
+  EXPECT_FALSE(MatchRegexAtHead("a?b", "aab"));
+
+  EXPECT_TRUE(MatchRegexAtHead(".*a", "bc12-ab"));
+  EXPECT_TRUE(MatchRegexAtHead("a?b", "b"));
+  EXPECT_TRUE(MatchRegexAtHead("a?b", "ab"));
+}
+
+TEST(MatchRegexAtHeadTest,
+     WorksWhenRegexStartsWithRepetionOfEscapeSequence) {
+  EXPECT_FALSE(MatchRegexAtHead("\\.+a", "abc"));
+  EXPECT_FALSE(MatchRegexAtHead("\\s?b", "  b"));
+
+  EXPECT_TRUE(MatchRegexAtHead("\\(*a", "((((ab"));
+  EXPECT_TRUE(MatchRegexAtHead("\\^?b", "^b"));
+  EXPECT_TRUE(MatchRegexAtHead("\\\\?b", "b"));
+  EXPECT_TRUE(MatchRegexAtHead("\\\\?b", "\\b"));
+}
+
+TEST(MatchRegexAtHeadTest, MatchesSequentially) {
+  EXPECT_FALSE(MatchRegexAtHead("ab.*c", "acabc"));
+
+  EXPECT_TRUE(MatchRegexAtHead("ab.*c", "ab-fsc"));
+}
+
+TEST(MatchRegexAnywhereTest, ReturnsFalseWhenStringIsNull) {
+  EXPECT_FALSE(MatchRegexAnywhere("", NULL));
+}
+
+TEST(MatchRegexAnywhereTest, WorksWhenRegexStartsWithCaret) {
+  EXPECT_FALSE(MatchRegexAnywhere("^a", "ba"));
+  EXPECT_FALSE(MatchRegexAnywhere("^$", "a"));
+
+  EXPECT_TRUE(MatchRegexAnywhere("^a", "ab"));
+  EXPECT_TRUE(MatchRegexAnywhere("^", "ab"));
+  EXPECT_TRUE(MatchRegexAnywhere("^$", ""));
+}
+
+TEST(MatchRegexAnywhereTest, ReturnsFalseWhenNoMatch) {
+  EXPECT_FALSE(MatchRegexAnywhere("a", "bcde123"));
+  EXPECT_FALSE(MatchRegexAnywhere("a.+a", "--aa88888888"));
+}
+
+TEST(MatchRegexAnywhereTest, ReturnsTrueWhenMatchingPrefix) {
+  EXPECT_TRUE(MatchRegexAnywhere("\\w+", "ab1_ - 5"));
+  EXPECT_TRUE(MatchRegexAnywhere(".*=", "="));
+  EXPECT_TRUE(MatchRegexAnywhere("x.*ab?.*bc", "xaaabc"));
+}
+
+TEST(MatchRegexAnywhereTest, ReturnsTrueWhenMatchingNonPrefix) {
+  EXPECT_TRUE(MatchRegexAnywhere("\\w+", "$$$ ab1_ - 5"));
+  EXPECT_TRUE(MatchRegexAnywhere("\\.+=", "=  ...="));
+}
+
+// Tests RE's implicit constructors.
+TEST(RETest, ImplicitConstructorWorks) {
+  const RE empty("");
+  EXPECT_STREQ("", empty.pattern());
+
+  const RE simple("hello");
+  EXPECT_STREQ("hello", simple.pattern());
+}
+
+// Tests that RE's constructors reject invalid regular expressions.
+TEST(RETest, RejectsInvalidRegex) {
+  EXPECT_NONFATAL_FAILURE({
+    const RE normal(NULL);
+  }, "NULL is not a valid simple regular expression");
+
+  EXPECT_NONFATAL_FAILURE({
+    const RE normal(".*(\\w+");
+  }, "'(' is unsupported");
+
+  EXPECT_NONFATAL_FAILURE({
+    const RE invalid("^?");
+  }, "'?' can only follow a repeatable token");
+}
+
+// Tests RE::FullMatch().
+TEST(RETest, FullMatchWorks) {
+  const RE empty("");
+  EXPECT_TRUE(RE::FullMatch("", empty));
+  EXPECT_FALSE(RE::FullMatch("a", empty));
+
+  const RE re1("a");
+  EXPECT_TRUE(RE::FullMatch("a", re1));
+
+  const RE re("a.*z");
+  EXPECT_TRUE(RE::FullMatch("az", re));
+  EXPECT_TRUE(RE::FullMatch("axyz", re));
+  EXPECT_FALSE(RE::FullMatch("baz", re));
+  EXPECT_FALSE(RE::FullMatch("azy", re));
+}
+
+// Tests RE::PartialMatch().
+TEST(RETest, PartialMatchWorks) {
+  const RE empty("");
+  EXPECT_TRUE(RE::PartialMatch("", empty));
+  EXPECT_TRUE(RE::PartialMatch("a", empty));
+
+  const RE re("a.*z");
+  EXPECT_TRUE(RE::PartialMatch("az", re));
+  EXPECT_TRUE(RE::PartialMatch("axyz", re));
+  EXPECT_TRUE(RE::PartialMatch("baz", re));
+  EXPECT_TRUE(RE::PartialMatch("azy", re));
+  EXPECT_FALSE(RE::PartialMatch("zza", re));
+}
+
+#endif  // GTEST_USES_POSIX_RE
+
+#if !GTEST_OS_WINDOWS_MOBILE
+
+TEST(CaptureTest, CapturesStdout) {
+  CaptureStdout();
+  fprintf(stdout, "abc");
+  EXPECT_STREQ("abc", GetCapturedStdout().c_str());
+
+  CaptureStdout();
+  fprintf(stdout, "def%cghi", '\0');
+  EXPECT_EQ(::std::string("def\0ghi", 7), ::std::string(GetCapturedStdout()));
+}
+
+TEST(CaptureTest, CapturesStderr) {
+  CaptureStderr();
+  fprintf(stderr, "jkl");
+  EXPECT_STREQ("jkl", GetCapturedStderr().c_str());
+
+  CaptureStderr();
+  fprintf(stderr, "jkl%cmno", '\0');
+  EXPECT_EQ(::std::string("jkl\0mno", 7), ::std::string(GetCapturedStderr()));
+}
+
+// Tests that stdout and stderr capture don't interfere with each other.
+TEST(CaptureTest, CapturesStdoutAndStderr) {
+  CaptureStdout();
+  CaptureStderr();
+  fprintf(stdout, "pqr");
+  fprintf(stderr, "stu");
+  EXPECT_STREQ("pqr", GetCapturedStdout().c_str());
+  EXPECT_STREQ("stu", GetCapturedStderr().c_str());
+}
+
+TEST(CaptureDeathTest, CannotReenterStdoutCapture) {
+  CaptureStdout();
+  EXPECT_DEATH_IF_SUPPORTED(CaptureStdout(),
+                            "Only one stdout capturer can exist at a time");
+  GetCapturedStdout();
+
+  // We cannot test stderr capturing using death tests as they use it
+  // themselves.
+}
+
+#endif  // !GTEST_OS_WINDOWS_MOBILE
+
+TEST(ThreadLocalTest, DefaultConstructorInitializesToDefaultValues) {
+  ThreadLocal<int> t1;
+  EXPECT_EQ(0, t1.get());
+
+  ThreadLocal<void*> t2;
+  EXPECT_TRUE(t2.get() == nullptr);
+}
+
+TEST(ThreadLocalTest, SingleParamConstructorInitializesToParam) {
+  ThreadLocal<int> t1(123);
+  EXPECT_EQ(123, t1.get());
+
+  int i = 0;
+  ThreadLocal<int*> t2(&i);
+  EXPECT_EQ(&i, t2.get());
+}
+
+class NoDefaultContructor {
+ public:
+  explicit NoDefaultContructor(const char*) {}
+  NoDefaultContructor(const NoDefaultContructor&) {}
+};
+
+TEST(ThreadLocalTest, ValueDefaultContructorIsNotRequiredForParamVersion) {
+  ThreadLocal<NoDefaultContructor> bar(NoDefaultContructor("foo"));
+  bar.pointer();
+}
+
+TEST(ThreadLocalTest, GetAndPointerReturnSameValue) {
+  ThreadLocal<std::string> thread_local_string;
+
+  EXPECT_EQ(thread_local_string.pointer(), &(thread_local_string.get()));
+
+  // Verifies the condition still holds after calling set.
+  thread_local_string.set("foo");
+  EXPECT_EQ(thread_local_string.pointer(), &(thread_local_string.get()));
+}
+
+TEST(ThreadLocalTest, PointerAndConstPointerReturnSameValue) {
+  ThreadLocal<std::string> thread_local_string;
+  const ThreadLocal<std::string>& const_thread_local_string =
+      thread_local_string;
+
+  EXPECT_EQ(thread_local_string.pointer(), const_thread_local_string.pointer());
+
+  thread_local_string.set("foo");
+  EXPECT_EQ(thread_local_string.pointer(), const_thread_local_string.pointer());
+}
+
+#if GTEST_IS_THREADSAFE
+
+void AddTwo(int* param) { *param += 2; }
+
+TEST(ThreadWithParamTest, ConstructorExecutesThreadFunc) {
+  int i = 40;
+  ThreadWithParam<int*> thread(&AddTwo, &i, nullptr);
+  thread.Join();
+  EXPECT_EQ(42, i);
+}
+
+TEST(MutexDeathTest, AssertHeldShouldAssertWhenNotLocked) {
+  // AssertHeld() is flaky only in the presence of multiple threads accessing
+  // the lock. In this case, the test is robust.
+  EXPECT_DEATH_IF_SUPPORTED({
+    Mutex m;
+    { MutexLock lock(&m); }
+    m.AssertHeld();
+  },
+  "thread .*hold");
+}
+
+TEST(MutexTest, AssertHeldShouldNotAssertWhenLocked) {
+  Mutex m;
+  MutexLock lock(&m);
+  m.AssertHeld();
+}
+
+class AtomicCounterWithMutex {
+ public:
+  explicit AtomicCounterWithMutex(Mutex* mutex) :
+    value_(0), mutex_(mutex), random_(42) {}
+
+  void Increment() {
+    MutexLock lock(mutex_);
+    int temp = value_;
+    {
+      // We need to put up a memory barrier to prevent reads and writes to
+      // value_ rearranged with the call to SleepMilliseconds when observed
+      // from other threads.
+#if GTEST_HAS_PTHREAD
+      // On POSIX, locking a mutex puts up a memory barrier.  We cannot use
+      // Mutex and MutexLock here or rely on their memory barrier
+      // functionality as we are testing them here.
+      pthread_mutex_t memory_barrier_mutex;
+      GTEST_CHECK_POSIX_SUCCESS_(
+          pthread_mutex_init(&memory_barrier_mutex, nullptr));
+      GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_lock(&memory_barrier_mutex));
+
+      SleepMilliseconds(static_cast<int>(random_.Generate(30)));
+
+      GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_unlock(&memory_barrier_mutex));
+      GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_destroy(&memory_barrier_mutex));
+#elif GTEST_OS_WINDOWS
+      // On Windows, performing an interlocked access puts up a memory barrier.
+      volatile LONG dummy = 0;
+      ::InterlockedIncrement(&dummy);
+      SleepMilliseconds(static_cast<int>(random_.Generate(30)));
+      ::InterlockedIncrement(&dummy);
+#else
+# error "Memory barrier not implemented on this platform."
+#endif  // GTEST_HAS_PTHREAD
+    }
+    value_ = temp + 1;
+  }
+  int value() const { return value_; }
+
+ private:
+  volatile int value_;
+  Mutex* const mutex_;  // Protects value_.
+  Random       random_;
+};
+
+void CountingThreadFunc(pair<AtomicCounterWithMutex*, int> param) {
+  for (int i = 0; i < param.second; ++i)
+      param.first->Increment();
+}
+
+// Tests that the mutex only lets one thread at a time to lock it.
+TEST(MutexTest, OnlyOneThreadCanLockAtATime) {
+  Mutex mutex;
+  AtomicCounterWithMutex locked_counter(&mutex);
+
+  typedef ThreadWithParam<pair<AtomicCounterWithMutex*, int> > ThreadType;
+  const int kCycleCount = 20;
+  const int kThreadCount = 7;
+  std::unique_ptr<ThreadType> counting_threads[kThreadCount];
+  Notification threads_can_start;
+  // Creates and runs kThreadCount threads that increment locked_counter
+  // kCycleCount times each.
+  for (int i = 0; i < kThreadCount; ++i) {
+    counting_threads[i].reset(new ThreadType(&CountingThreadFunc,
+                                             make_pair(&locked_counter,
+                                                       kCycleCount),
+                                             &threads_can_start));
+  }
+  threads_can_start.Notify();
+  for (int i = 0; i < kThreadCount; ++i)
+    counting_threads[i]->Join();
+
+  // If the mutex lets more than one thread to increment the counter at a
+  // time, they are likely to encounter a race condition and have some
+  // increments overwritten, resulting in the lower then expected counter
+  // value.
+  EXPECT_EQ(kCycleCount * kThreadCount, locked_counter.value());
+}
+
+template <typename T>
+void RunFromThread(void (func)(T), T param) {
+  ThreadWithParam<T> thread(func, param, nullptr);
+  thread.Join();
+}
+
+void RetrieveThreadLocalValue(
+    pair<ThreadLocal<std::string>*, std::string*> param) {
+  *param.second = param.first->get();
+}
+
+TEST(ThreadLocalTest, ParameterizedConstructorSetsDefault) {
+  ThreadLocal<std::string> thread_local_string("foo");
+  EXPECT_STREQ("foo", thread_local_string.get().c_str());
+
+  thread_local_string.set("bar");
+  EXPECT_STREQ("bar", thread_local_string.get().c_str());
+
+  std::string result;
+  RunFromThread(&RetrieveThreadLocalValue,
+                make_pair(&thread_local_string, &result));
+  EXPECT_STREQ("foo", result.c_str());
+}
+
+// Keeps track of whether of destructors being called on instances of
+// DestructorTracker.  On Windows, waits for the destructor call reports.
+class DestructorCall {
+ public:
+  DestructorCall() {
+    invoked_ = false;
+#if GTEST_OS_WINDOWS
+    wait_event_.Reset(::CreateEvent(NULL, TRUE, FALSE, NULL));
+    GTEST_CHECK_(wait_event_.Get() != NULL);
+#endif
+  }
+
+  bool CheckDestroyed() const {
+#if GTEST_OS_WINDOWS
+    if (::WaitForSingleObject(wait_event_.Get(), 1000) != WAIT_OBJECT_0)
+      return false;
+#endif
+    return invoked_;
+  }
+
+  void ReportDestroyed() {
+    invoked_ = true;
+#if GTEST_OS_WINDOWS
+    ::SetEvent(wait_event_.Get());
+#endif
+  }
+
+  static std::vector<DestructorCall*>& List() { return *list_; }
+
+  static void ResetList() {
+    for (size_t i = 0; i < list_->size(); ++i) {
+      delete list_->at(i);
+    }
+    list_->clear();
+  }
+
+ private:
+  bool invoked_;
+#if GTEST_OS_WINDOWS
+  AutoHandle wait_event_;
+#endif
+  static std::vector<DestructorCall*>* const list_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(DestructorCall);
+};
+
+std::vector<DestructorCall*>* const DestructorCall::list_ =
+    new std::vector<DestructorCall*>;
+
+// DestructorTracker keeps track of whether its instances have been
+// destroyed.
+class DestructorTracker {
+ public:
+  DestructorTracker() : index_(GetNewIndex()) {}
+  DestructorTracker(const DestructorTracker& /* rhs */)
+      : index_(GetNewIndex()) {}
+  ~DestructorTracker() {
+    // We never access DestructorCall::List() concurrently, so we don't need
+    // to protect this access with a mutex.
+    DestructorCall::List()[index_]->ReportDestroyed();
+  }
+
+ private:
+  static size_t GetNewIndex() {
+    DestructorCall::List().push_back(new DestructorCall);
+    return DestructorCall::List().size() - 1;
+  }
+  const size_t index_;
+
+  GTEST_DISALLOW_ASSIGN_(DestructorTracker);
+};
+
+typedef ThreadLocal<DestructorTracker>* ThreadParam;
+
+void CallThreadLocalGet(ThreadParam thread_local_param) {
+  thread_local_param->get();
+}
+
+// Tests that when a ThreadLocal object dies in a thread, it destroys
+// the managed object for that thread.
+TEST(ThreadLocalTest, DestroysManagedObjectForOwnThreadWhenDying) {
+  DestructorCall::ResetList();
+
+  {
+    ThreadLocal<DestructorTracker> thread_local_tracker;
+    ASSERT_EQ(0U, DestructorCall::List().size());
+
+    // This creates another DestructorTracker object for the main thread.
+    thread_local_tracker.get();
+    ASSERT_EQ(1U, DestructorCall::List().size());
+    ASSERT_FALSE(DestructorCall::List()[0]->CheckDestroyed());
+  }
+
+  // Now thread_local_tracker has died.
+  ASSERT_EQ(1U, DestructorCall::List().size());
+  EXPECT_TRUE(DestructorCall::List()[0]->CheckDestroyed());
+
+  DestructorCall::ResetList();
+}
+
+// Tests that when a thread exits, the thread-local object for that
+// thread is destroyed.
+TEST(ThreadLocalTest, DestroysManagedObjectAtThreadExit) {
+  DestructorCall::ResetList();
+
+  {
+    ThreadLocal<DestructorTracker> thread_local_tracker;
+    ASSERT_EQ(0U, DestructorCall::List().size());
+
+    // This creates another DestructorTracker object in the new thread.
+    ThreadWithParam<ThreadParam> thread(&CallThreadLocalGet,
+                                        &thread_local_tracker, nullptr);
+    thread.Join();
+
+    // The thread has exited, and we should have a DestroyedTracker
+    // instance created for it. But it may not have been destroyed yet.
+    ASSERT_EQ(1U, DestructorCall::List().size());
+  }
+
+  // The thread has exited and thread_local_tracker has died.
+  ASSERT_EQ(1U, DestructorCall::List().size());
+  EXPECT_TRUE(DestructorCall::List()[0]->CheckDestroyed());
+
+  DestructorCall::ResetList();
+}
+
+TEST(ThreadLocalTest, ThreadLocalMutationsAffectOnlyCurrentThread) {
+  ThreadLocal<std::string> thread_local_string;
+  thread_local_string.set("Foo");
+  EXPECT_STREQ("Foo", thread_local_string.get().c_str());
+
+  std::string result;
+  RunFromThread(&RetrieveThreadLocalValue,
+                make_pair(&thread_local_string, &result));
+  EXPECT_TRUE(result.empty());
+}
+
+#endif  // GTEST_IS_THREADSAFE
+
+#if GTEST_OS_WINDOWS
+TEST(WindowsTypesTest, HANDLEIsVoidStar) {
+  StaticAssertTypeEq<HANDLE, void*>();
+}
+
+#if GTEST_OS_WINDOWS_MINGW && !defined(__MINGW64_VERSION_MAJOR)
+TEST(WindowsTypesTest, _CRITICAL_SECTIONIs_CRITICAL_SECTION) {
+  StaticAssertTypeEq<CRITICAL_SECTION, _CRITICAL_SECTION>();
+}
+#else
+TEST(WindowsTypesTest, CRITICAL_SECTIONIs_RTL_CRITICAL_SECTION) {
+  StaticAssertTypeEq<CRITICAL_SECTION, _RTL_CRITICAL_SECTION>();
+}
+#endif
+
+#endif  // GTEST_OS_WINDOWS
+
+}  // namespace internal
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googletest/test/googletest-printers-test.cc b/build/_deps/googletest-src/googletest/test/googletest-printers-test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4bdc9adde9e0ea42653ae13c2b1f462cd3c86988
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-printers-test.cc
@@ -0,0 +1,1620 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Google Test - The Google C++ Testing and Mocking Framework
+//
+// This file tests the universal value printer.
+
+#include <ctype.h>
+#include <limits.h>
+#include <string.h>
+#include <algorithm>
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <set>
+#include <sstream>
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <vector>
+
+#include "gtest/gtest-printers.h"
+#include "gtest/gtest.h"
+
+// Some user-defined types for testing the universal value printer.
+
+// An anonymous enum type.
+enum AnonymousEnum {
+  kAE1 = -1,
+  kAE2 = 1
+};
+
+// An enum without a user-defined printer.
+enum EnumWithoutPrinter {
+  kEWP1 = -2,
+  kEWP2 = 42
+};
+
+// An enum with a << operator.
+enum EnumWithStreaming {
+  kEWS1 = 10
+};
+
+std::ostream& operator<<(std::ostream& os, EnumWithStreaming e) {
+  return os << (e == kEWS1 ? "kEWS1" : "invalid");
+}
+
+// An enum with a PrintTo() function.
+enum EnumWithPrintTo {
+  kEWPT1 = 1
+};
+
+void PrintTo(EnumWithPrintTo e, std::ostream* os) {
+  *os << (e == kEWPT1 ? "kEWPT1" : "invalid");
+}
+
+// A class implicitly convertible to BiggestInt.
+class BiggestIntConvertible {
+ public:
+  operator ::testing::internal::BiggestInt() const { return 42; }
+};
+
+// A user-defined unprintable class template in the global namespace.
+template <typename T>
+class UnprintableTemplateInGlobal {
+ public:
+  UnprintableTemplateInGlobal() : value_() {}
+ private:
+  T value_;
+};
+
+// A user-defined streamable type in the global namespace.
+class StreamableInGlobal {
+ public:
+  virtual ~StreamableInGlobal() {}
+};
+
+inline void operator<<(::std::ostream& os, const StreamableInGlobal& /* x */) {
+  os << "StreamableInGlobal";
+}
+
+void operator<<(::std::ostream& os, const StreamableInGlobal* /* x */) {
+  os << "StreamableInGlobal*";
+}
+
+namespace foo {
+
+// A user-defined unprintable type in a user namespace.
+class UnprintableInFoo {
+ public:
+  UnprintableInFoo() : z_(0) { memcpy(xy_, "\xEF\x12\x0\x0\x34\xAB\x0\x0", 8); }
+  double z() const { return z_; }
+ private:
+  char xy_[8];
+  double z_;
+};
+
+// A user-defined printable type in a user-chosen namespace.
+struct PrintableViaPrintTo {
+  PrintableViaPrintTo() : value() {}
+  int value;
+};
+
+void PrintTo(const PrintableViaPrintTo& x, ::std::ostream* os) {
+  *os << "PrintableViaPrintTo: " << x.value;
+}
+
+// A type with a user-defined << for printing its pointer.
+struct PointerPrintable {
+};
+
+::std::ostream& operator<<(::std::ostream& os,
+                           const PointerPrintable* /* x */) {
+  return os << "PointerPrintable*";
+}
+
+// A user-defined printable class template in a user-chosen namespace.
+template <typename T>
+class PrintableViaPrintToTemplate {
+ public:
+  explicit PrintableViaPrintToTemplate(const T& a_value) : value_(a_value) {}
+
+  const T& value() const { return value_; }
+ private:
+  T value_;
+};
+
+template <typename T>
+void PrintTo(const PrintableViaPrintToTemplate<T>& x, ::std::ostream* os) {
+  *os << "PrintableViaPrintToTemplate: " << x.value();
+}
+
+// A user-defined streamable class template in a user namespace.
+template <typename T>
+class StreamableTemplateInFoo {
+ public:
+  StreamableTemplateInFoo() : value_() {}
+
+  const T& value() const { return value_; }
+ private:
+  T value_;
+};
+
+template <typename T>
+inline ::std::ostream& operator<<(::std::ostream& os,
+                                  const StreamableTemplateInFoo<T>& x) {
+  return os << "StreamableTemplateInFoo: " << x.value();
+}
+
+// A user-defined streamable but recursivly-defined container type in
+// a user namespace, it mimics therefore std::filesystem::path or
+// boost::filesystem::path.
+class PathLike {
+ public:
+  struct iterator {
+    typedef PathLike value_type;
+
+    iterator& operator++();
+    PathLike& operator*();
+  };
+
+  using value_type = char;
+  using const_iterator = iterator;
+
+  PathLike() {}
+
+  iterator begin() const { return iterator(); }
+  iterator end() const { return iterator(); }
+
+  friend ::std::ostream& operator<<(::std::ostream& os, const PathLike&) {
+    return os << "Streamable-PathLike";
+  }
+};
+
+}  // namespace foo
+
+namespace testing {
+namespace gtest_printers_test {
+
+using ::std::deque;
+using ::std::list;
+using ::std::make_pair;
+using ::std::map;
+using ::std::multimap;
+using ::std::multiset;
+using ::std::pair;
+using ::std::set;
+using ::std::vector;
+using ::testing::PrintToString;
+using ::testing::internal::FormatForComparisonFailureMessage;
+using ::testing::internal::ImplicitCast_;
+using ::testing::internal::NativeArray;
+using ::testing::internal::RE;
+using ::testing::internal::RelationToSourceReference;
+using ::testing::internal::Strings;
+using ::testing::internal::UniversalPrint;
+using ::testing::internal::UniversalPrinter;
+using ::testing::internal::UniversalTersePrint;
+using ::testing::internal::UniversalTersePrintTupleFieldsToStrings;
+
+// Prints a value to a string using the universal value printer.  This
+// is a helper for testing UniversalPrinter<T>::Print() for various types.
+template <typename T>
+std::string Print(const T& value) {
+  ::std::stringstream ss;
+  UniversalPrinter<T>::Print(value, &ss);
+  return ss.str();
+}
+
+// Prints a value passed by reference to a string, using the universal
+// value printer.  This is a helper for testing
+// UniversalPrinter<T&>::Print() for various types.
+template <typename T>
+std::string PrintByRef(const T& value) {
+  ::std::stringstream ss;
+  UniversalPrinter<T&>::Print(value, &ss);
+  return ss.str();
+}
+
+// Tests printing various enum types.
+
+TEST(PrintEnumTest, AnonymousEnum) {
+  EXPECT_EQ("-1", Print(kAE1));
+  EXPECT_EQ("1", Print(kAE2));
+}
+
+TEST(PrintEnumTest, EnumWithoutPrinter) {
+  EXPECT_EQ("-2", Print(kEWP1));
+  EXPECT_EQ("42", Print(kEWP2));
+}
+
+TEST(PrintEnumTest, EnumWithStreaming) {
+  EXPECT_EQ("kEWS1", Print(kEWS1));
+  EXPECT_EQ("invalid", Print(static_cast<EnumWithStreaming>(0)));
+}
+
+TEST(PrintEnumTest, EnumWithPrintTo) {
+  EXPECT_EQ("kEWPT1", Print(kEWPT1));
+  EXPECT_EQ("invalid", Print(static_cast<EnumWithPrintTo>(0)));
+}
+
+// Tests printing a class implicitly convertible to BiggestInt.
+
+TEST(PrintClassTest, BiggestIntConvertible) {
+  EXPECT_EQ("42", Print(BiggestIntConvertible()));
+}
+
+// Tests printing various char types.
+
+// char.
+TEST(PrintCharTest, PlainChar) {
+  EXPECT_EQ("'\\0'", Print('\0'));
+  EXPECT_EQ("'\\'' (39, 0x27)", Print('\''));
+  EXPECT_EQ("'\"' (34, 0x22)", Print('"'));
+  EXPECT_EQ("'?' (63, 0x3F)", Print('?'));
+  EXPECT_EQ("'\\\\' (92, 0x5C)", Print('\\'));
+  EXPECT_EQ("'\\a' (7)", Print('\a'));
+  EXPECT_EQ("'\\b' (8)", Print('\b'));
+  EXPECT_EQ("'\\f' (12, 0xC)", Print('\f'));
+  EXPECT_EQ("'\\n' (10, 0xA)", Print('\n'));
+  EXPECT_EQ("'\\r' (13, 0xD)", Print('\r'));
+  EXPECT_EQ("'\\t' (9)", Print('\t'));
+  EXPECT_EQ("'\\v' (11, 0xB)", Print('\v'));
+  EXPECT_EQ("'\\x7F' (127)", Print('\x7F'));
+  EXPECT_EQ("'\\xFF' (255)", Print('\xFF'));
+  EXPECT_EQ("' ' (32, 0x20)", Print(' '));
+  EXPECT_EQ("'a' (97, 0x61)", Print('a'));
+}
+
+// signed char.
+TEST(PrintCharTest, SignedChar) {
+  EXPECT_EQ("'\\0'", Print(static_cast<signed char>('\0')));
+  EXPECT_EQ("'\\xCE' (-50)",
+            Print(static_cast<signed char>(-50)));
+}
+
+// unsigned char.
+TEST(PrintCharTest, UnsignedChar) {
+  EXPECT_EQ("'\\0'", Print(static_cast<unsigned char>('\0')));
+  EXPECT_EQ("'b' (98, 0x62)",
+            Print(static_cast<unsigned char>('b')));
+}
+
+// Tests printing other simple, built-in types.
+
+// bool.
+TEST(PrintBuiltInTypeTest, Bool) {
+  EXPECT_EQ("false", Print(false));
+  EXPECT_EQ("true", Print(true));
+}
+
+// wchar_t.
+TEST(PrintBuiltInTypeTest, Wchar_t) {
+  EXPECT_EQ("L'\\0'", Print(L'\0'));
+  EXPECT_EQ("L'\\'' (39, 0x27)", Print(L'\''));
+  EXPECT_EQ("L'\"' (34, 0x22)", Print(L'"'));
+  EXPECT_EQ("L'?' (63, 0x3F)", Print(L'?'));
+  EXPECT_EQ("L'\\\\' (92, 0x5C)", Print(L'\\'));
+  EXPECT_EQ("L'\\a' (7)", Print(L'\a'));
+  EXPECT_EQ("L'\\b' (8)", Print(L'\b'));
+  EXPECT_EQ("L'\\f' (12, 0xC)", Print(L'\f'));
+  EXPECT_EQ("L'\\n' (10, 0xA)", Print(L'\n'));
+  EXPECT_EQ("L'\\r' (13, 0xD)", Print(L'\r'));
+  EXPECT_EQ("L'\\t' (9)", Print(L'\t'));
+  EXPECT_EQ("L'\\v' (11, 0xB)", Print(L'\v'));
+  EXPECT_EQ("L'\\x7F' (127)", Print(L'\x7F'));
+  EXPECT_EQ("L'\\xFF' (255)", Print(L'\xFF'));
+  EXPECT_EQ("L' ' (32, 0x20)", Print(L' '));
+  EXPECT_EQ("L'a' (97, 0x61)", Print(L'a'));
+  EXPECT_EQ("L'\\x576' (1398)", Print(static_cast<wchar_t>(0x576)));
+  EXPECT_EQ("L'\\xC74D' (51021)", Print(static_cast<wchar_t>(0xC74D)));
+}
+
+// Test that Int64 provides more storage than wchar_t.
+TEST(PrintTypeSizeTest, Wchar_t) {
+  EXPECT_LT(sizeof(wchar_t), sizeof(testing::internal::Int64));
+}
+
+// Various integer types.
+TEST(PrintBuiltInTypeTest, Integer) {
+  EXPECT_EQ("'\\xFF' (255)", Print(static_cast<unsigned char>(255)));  // uint8
+  EXPECT_EQ("'\\x80' (-128)", Print(static_cast<signed char>(-128)));  // int8
+  EXPECT_EQ("65535", Print(USHRT_MAX));  // uint16
+  EXPECT_EQ("-32768", Print(SHRT_MIN));  // int16
+  EXPECT_EQ("4294967295", Print(UINT_MAX));  // uint32
+  EXPECT_EQ("-2147483648", Print(INT_MIN));  // int32
+  EXPECT_EQ("18446744073709551615",
+            Print(static_cast<testing::internal::UInt64>(-1)));  // uint64
+  EXPECT_EQ("-9223372036854775808",
+            Print(static_cast<testing::internal::Int64>(1) << 63));  // int64
+}
+
+// Size types.
+TEST(PrintBuiltInTypeTest, Size_t) {
+  EXPECT_EQ("1", Print(sizeof('a')));  // size_t.
+#if !GTEST_OS_WINDOWS
+  // Windows has no ssize_t type.
+  EXPECT_EQ("-2", Print(static_cast<ssize_t>(-2)));  // ssize_t.
+#endif  // !GTEST_OS_WINDOWS
+}
+
+// Floating-points.
+TEST(PrintBuiltInTypeTest, FloatingPoints) {
+  EXPECT_EQ("1.5", Print(1.5f));   // float
+  EXPECT_EQ("-2.5", Print(-2.5));  // double
+}
+
+// Since ::std::stringstream::operator<<(const void *) formats the pointer
+// output differently with different compilers, we have to create the expected
+// output first and use it as our expectation.
+static std::string PrintPointer(const void* p) {
+  ::std::stringstream expected_result_stream;
+  expected_result_stream << p;
+  return expected_result_stream.str();
+}
+
+// Tests printing C strings.
+
+// const char*.
+TEST(PrintCStringTest, Const) {
+  const char* p = "World";
+  EXPECT_EQ(PrintPointer(p) + " pointing to \"World\"", Print(p));
+}
+
+// char*.
+TEST(PrintCStringTest, NonConst) {
+  char p[] = "Hi";
+  EXPECT_EQ(PrintPointer(p) + " pointing to \"Hi\"",
+            Print(static_cast<char*>(p)));
+}
+
+// NULL C string.
+TEST(PrintCStringTest, Null) {
+  const char* p = nullptr;
+  EXPECT_EQ("NULL", Print(p));
+}
+
+// Tests that C strings are escaped properly.
+TEST(PrintCStringTest, EscapesProperly) {
+  const char* p = "'\"?\\\a\b\f\n\r\t\v\x7F\xFF a";
+  EXPECT_EQ(PrintPointer(p) + " pointing to \"'\\\"?\\\\\\a\\b\\f"
+            "\\n\\r\\t\\v\\x7F\\xFF a\"",
+            Print(p));
+}
+
+// MSVC compiler can be configured to define whar_t as a typedef
+// of unsigned short. Defining an overload for const wchar_t* in that case
+// would cause pointers to unsigned shorts be printed as wide strings,
+// possibly accessing more memory than intended and causing invalid
+// memory accesses. MSVC defines _NATIVE_WCHAR_T_DEFINED symbol when
+// wchar_t is implemented as a native type.
+#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED)
+
+// const wchar_t*.
+TEST(PrintWideCStringTest, Const) {
+  const wchar_t* p = L"World";
+  EXPECT_EQ(PrintPointer(p) + " pointing to L\"World\"", Print(p));
+}
+
+// wchar_t*.
+TEST(PrintWideCStringTest, NonConst) {
+  wchar_t p[] = L"Hi";
+  EXPECT_EQ(PrintPointer(p) + " pointing to L\"Hi\"",
+            Print(static_cast<wchar_t*>(p)));
+}
+
+// NULL wide C string.
+TEST(PrintWideCStringTest, Null) {
+  const wchar_t* p = nullptr;
+  EXPECT_EQ("NULL", Print(p));
+}
+
+// Tests that wide C strings are escaped properly.
+TEST(PrintWideCStringTest, EscapesProperly) {
+  const wchar_t s[] = {'\'', '"', '?', '\\', '\a', '\b', '\f', '\n', '\r',
+                       '\t', '\v', 0xD3, 0x576, 0x8D3, 0xC74D, ' ', 'a', '\0'};
+  EXPECT_EQ(PrintPointer(s) + " pointing to L\"'\\\"?\\\\\\a\\b\\f"
+            "\\n\\r\\t\\v\\xD3\\x576\\x8D3\\xC74D a\"",
+            Print(static_cast<const wchar_t*>(s)));
+}
+#endif  // native wchar_t
+
+// Tests printing pointers to other char types.
+
+// signed char*.
+TEST(PrintCharPointerTest, SignedChar) {
+  signed char* p = reinterpret_cast<signed char*>(0x1234);
+  EXPECT_EQ(PrintPointer(p), Print(p));
+  p = nullptr;
+  EXPECT_EQ("NULL", Print(p));
+}
+
+// const signed char*.
+TEST(PrintCharPointerTest, ConstSignedChar) {
+  signed char* p = reinterpret_cast<signed char*>(0x1234);
+  EXPECT_EQ(PrintPointer(p), Print(p));
+  p = nullptr;
+  EXPECT_EQ("NULL", Print(p));
+}
+
+// unsigned char*.
+TEST(PrintCharPointerTest, UnsignedChar) {
+  unsigned char* p = reinterpret_cast<unsigned char*>(0x1234);
+  EXPECT_EQ(PrintPointer(p), Print(p));
+  p = nullptr;
+  EXPECT_EQ("NULL", Print(p));
+}
+
+// const unsigned char*.
+TEST(PrintCharPointerTest, ConstUnsignedChar) {
+  const unsigned char* p = reinterpret_cast<const unsigned char*>(0x1234);
+  EXPECT_EQ(PrintPointer(p), Print(p));
+  p = nullptr;
+  EXPECT_EQ("NULL", Print(p));
+}
+
+// Tests printing pointers to simple, built-in types.
+
+// bool*.
+TEST(PrintPointerToBuiltInTypeTest, Bool) {
+  bool* p = reinterpret_cast<bool*>(0xABCD);
+  EXPECT_EQ(PrintPointer(p), Print(p));
+  p = nullptr;
+  EXPECT_EQ("NULL", Print(p));
+}
+
+// void*.
+TEST(PrintPointerToBuiltInTypeTest, Void) {
+  void* p = reinterpret_cast<void*>(0xABCD);
+  EXPECT_EQ(PrintPointer(p), Print(p));
+  p = nullptr;
+  EXPECT_EQ("NULL", Print(p));
+}
+
+// const void*.
+TEST(PrintPointerToBuiltInTypeTest, ConstVoid) {
+  const void* p = reinterpret_cast<const void*>(0xABCD);
+  EXPECT_EQ(PrintPointer(p), Print(p));
+  p = nullptr;
+  EXPECT_EQ("NULL", Print(p));
+}
+
+// Tests printing pointers to pointers.
+TEST(PrintPointerToPointerTest, IntPointerPointer) {
+  int** p = reinterpret_cast<int**>(0xABCD);
+  EXPECT_EQ(PrintPointer(p), Print(p));
+  p = nullptr;
+  EXPECT_EQ("NULL", Print(p));
+}
+
+// Tests printing (non-member) function pointers.
+
+void MyFunction(int /* n */) {}
+
+TEST(PrintPointerTest, NonMemberFunctionPointer) {
+  // We cannot directly cast &MyFunction to const void* because the
+  // standard disallows casting between pointers to functions and
+  // pointers to objects, and some compilers (e.g. GCC 3.4) enforce
+  // this limitation.
+  EXPECT_EQ(
+      PrintPointer(reinterpret_cast<const void*>(
+          reinterpret_cast<internal::BiggestInt>(&MyFunction))),
+      Print(&MyFunction));
+  int (*p)(bool) = NULL;  // NOLINT
+  EXPECT_EQ("NULL", Print(p));
+}
+
+// An assertion predicate determining whether a one string is a prefix for
+// another.
+template <typename StringType>
+AssertionResult HasPrefix(const StringType& str, const StringType& prefix) {
+  if (str.find(prefix, 0) == 0)
+    return AssertionSuccess();
+
+  const bool is_wide_string = sizeof(prefix[0]) > 1;
+  const char* const begin_string_quote = is_wide_string ? "L\"" : "\"";
+  return AssertionFailure()
+      << begin_string_quote << prefix << "\" is not a prefix of "
+      << begin_string_quote << str << "\"\n";
+}
+
+// Tests printing member variable pointers.  Although they are called
+// pointers, they don't point to a location in the address space.
+// Their representation is implementation-defined.  Thus they will be
+// printed as raw bytes.
+
+struct Foo {
+ public:
+  virtual ~Foo() {}
+  int MyMethod(char x) { return x + 1; }
+  virtual char MyVirtualMethod(int /* n */) { return 'a'; }
+
+  int value;
+};
+
+TEST(PrintPointerTest, MemberVariablePointer) {
+  EXPECT_TRUE(HasPrefix(Print(&Foo::value),
+                        Print(sizeof(&Foo::value)) + "-byte object "));
+  int Foo::*p = NULL;  // NOLINT
+  EXPECT_TRUE(HasPrefix(Print(p),
+                        Print(sizeof(p)) + "-byte object "));
+}
+
+// Tests printing member function pointers.  Although they are called
+// pointers, they don't point to a location in the address space.
+// Their representation is implementation-defined.  Thus they will be
+// printed as raw bytes.
+TEST(PrintPointerTest, MemberFunctionPointer) {
+  EXPECT_TRUE(HasPrefix(Print(&Foo::MyMethod),
+                        Print(sizeof(&Foo::MyMethod)) + "-byte object "));
+  EXPECT_TRUE(
+      HasPrefix(Print(&Foo::MyVirtualMethod),
+                Print(sizeof((&Foo::MyVirtualMethod))) + "-byte object "));
+  int (Foo::*p)(char) = NULL;  // NOLINT
+  EXPECT_TRUE(HasPrefix(Print(p),
+                        Print(sizeof(p)) + "-byte object "));
+}
+
+// Tests printing C arrays.
+
+// The difference between this and Print() is that it ensures that the
+// argument is a reference to an array.
+template <typename T, size_t N>
+std::string PrintArrayHelper(T (&a)[N]) {
+  return Print(a);
+}
+
+// One-dimensional array.
+TEST(PrintArrayTest, OneDimensionalArray) {
+  int a[5] = { 1, 2, 3, 4, 5 };
+  EXPECT_EQ("{ 1, 2, 3, 4, 5 }", PrintArrayHelper(a));
+}
+
+// Two-dimensional array.
+TEST(PrintArrayTest, TwoDimensionalArray) {
+  int a[2][5] = {
+    { 1, 2, 3, 4, 5 },
+    { 6, 7, 8, 9, 0 }
+  };
+  EXPECT_EQ("{ { 1, 2, 3, 4, 5 }, { 6, 7, 8, 9, 0 } }", PrintArrayHelper(a));
+}
+
+// Array of const elements.
+TEST(PrintArrayTest, ConstArray) {
+  const bool a[1] = { false };
+  EXPECT_EQ("{ false }", PrintArrayHelper(a));
+}
+
+// char array without terminating NUL.
+TEST(PrintArrayTest, CharArrayWithNoTerminatingNul) {
+  // Array a contains '\0' in the middle and doesn't end with '\0'.
+  char a[] = { 'H', '\0', 'i' };
+  EXPECT_EQ("\"H\\0i\" (no terminating NUL)", PrintArrayHelper(a));
+}
+
+// const char array with terminating NUL.
+TEST(PrintArrayTest, ConstCharArrayWithTerminatingNul) {
+  const char a[] = "\0Hi";
+  EXPECT_EQ("\"\\0Hi\"", PrintArrayHelper(a));
+}
+
+// const wchar_t array without terminating NUL.
+TEST(PrintArrayTest, WCharArrayWithNoTerminatingNul) {
+  // Array a contains '\0' in the middle and doesn't end with '\0'.
+  const wchar_t a[] = { L'H', L'\0', L'i' };
+  EXPECT_EQ("L\"H\\0i\" (no terminating NUL)", PrintArrayHelper(a));
+}
+
+// wchar_t array with terminating NUL.
+TEST(PrintArrayTest, WConstCharArrayWithTerminatingNul) {
+  const wchar_t a[] = L"\0Hi";
+  EXPECT_EQ("L\"\\0Hi\"", PrintArrayHelper(a));
+}
+
+// Array of objects.
+TEST(PrintArrayTest, ObjectArray) {
+  std::string a[3] = {"Hi", "Hello", "Ni hao"};
+  EXPECT_EQ("{ \"Hi\", \"Hello\", \"Ni hao\" }", PrintArrayHelper(a));
+}
+
+// Array with many elements.
+TEST(PrintArrayTest, BigArray) {
+  int a[100] = { 1, 2, 3 };
+  EXPECT_EQ("{ 1, 2, 3, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0 }",
+            PrintArrayHelper(a));
+}
+
+// Tests printing ::string and ::std::string.
+
+// ::std::string.
+TEST(PrintStringTest, StringInStdNamespace) {
+  const char s[] = "'\"?\\\a\b\f\n\0\r\t\v\x7F\xFF a";
+  const ::std::string str(s, sizeof(s));
+  EXPECT_EQ("\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v\\x7F\\xFF a\\0\"",
+            Print(str));
+}
+
+TEST(PrintStringTest, StringAmbiguousHex) {
+  // "\x6BANANA" is ambiguous, it can be interpreted as starting with either of:
+  // '\x6', '\x6B', or '\x6BA'.
+
+  // a hex escaping sequence following by a decimal digit
+  EXPECT_EQ("\"0\\x12\" \"3\"", Print(::std::string("0\x12" "3")));
+  // a hex escaping sequence following by a hex digit (lower-case)
+  EXPECT_EQ("\"mm\\x6\" \"bananas\"", Print(::std::string("mm\x6" "bananas")));
+  // a hex escaping sequence following by a hex digit (upper-case)
+  EXPECT_EQ("\"NOM\\x6\" \"BANANA\"", Print(::std::string("NOM\x6" "BANANA")));
+  // a hex escaping sequence following by a non-xdigit
+  EXPECT_EQ("\"!\\x5-!\"", Print(::std::string("!\x5-!")));
+}
+
+// Tests printing ::std::wstring.
+#if GTEST_HAS_STD_WSTRING
+// ::std::wstring.
+TEST(PrintWideStringTest, StringInStdNamespace) {
+  const wchar_t s[] = L"'\"?\\\a\b\f\n\0\r\t\v\xD3\x576\x8D3\xC74D a";
+  const ::std::wstring str(s, sizeof(s)/sizeof(wchar_t));
+  EXPECT_EQ("L\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v"
+            "\\xD3\\x576\\x8D3\\xC74D a\\0\"",
+            Print(str));
+}
+
+TEST(PrintWideStringTest, StringAmbiguousHex) {
+  // same for wide strings.
+  EXPECT_EQ("L\"0\\x12\" L\"3\"", Print(::std::wstring(L"0\x12" L"3")));
+  EXPECT_EQ("L\"mm\\x6\" L\"bananas\"",
+            Print(::std::wstring(L"mm\x6" L"bananas")));
+  EXPECT_EQ("L\"NOM\\x6\" L\"BANANA\"",
+            Print(::std::wstring(L"NOM\x6" L"BANANA")));
+  EXPECT_EQ("L\"!\\x5-!\"", Print(::std::wstring(L"!\x5-!")));
+}
+#endif  // GTEST_HAS_STD_WSTRING
+
+// Tests printing types that support generic streaming (i.e. streaming
+// to std::basic_ostream<Char, CharTraits> for any valid Char and
+// CharTraits types).
+
+// Tests printing a non-template type that supports generic streaming.
+
+class AllowsGenericStreaming {};
+
+template <typename Char, typename CharTraits>
+std::basic_ostream<Char, CharTraits>& operator<<(
+    std::basic_ostream<Char, CharTraits>& os,
+    const AllowsGenericStreaming& /* a */) {
+  return os << "AllowsGenericStreaming";
+}
+
+TEST(PrintTypeWithGenericStreamingTest, NonTemplateType) {
+  AllowsGenericStreaming a;
+  EXPECT_EQ("AllowsGenericStreaming", Print(a));
+}
+
+// Tests printing a template type that supports generic streaming.
+
+template <typename T>
+class AllowsGenericStreamingTemplate {};
+
+template <typename Char, typename CharTraits, typename T>
+std::basic_ostream<Char, CharTraits>& operator<<(
+    std::basic_ostream<Char, CharTraits>& os,
+    const AllowsGenericStreamingTemplate<T>& /* a */) {
+  return os << "AllowsGenericStreamingTemplate";
+}
+
+TEST(PrintTypeWithGenericStreamingTest, TemplateType) {
+  AllowsGenericStreamingTemplate<int> a;
+  EXPECT_EQ("AllowsGenericStreamingTemplate", Print(a));
+}
+
+// Tests printing a type that supports generic streaming and can be
+// implicitly converted to another printable type.
+
+template <typename T>
+class AllowsGenericStreamingAndImplicitConversionTemplate {
+ public:
+  operator bool() const { return false; }
+};
+
+template <typename Char, typename CharTraits, typename T>
+std::basic_ostream<Char, CharTraits>& operator<<(
+    std::basic_ostream<Char, CharTraits>& os,
+    const AllowsGenericStreamingAndImplicitConversionTemplate<T>& /* a */) {
+  return os << "AllowsGenericStreamingAndImplicitConversionTemplate";
+}
+
+TEST(PrintTypeWithGenericStreamingTest, TypeImplicitlyConvertible) {
+  AllowsGenericStreamingAndImplicitConversionTemplate<int> a;
+  EXPECT_EQ("AllowsGenericStreamingAndImplicitConversionTemplate", Print(a));
+}
+
+#if GTEST_HAS_ABSL
+
+// Tests printing ::absl::string_view.
+
+TEST(PrintStringViewTest, SimpleStringView) {
+  const ::absl::string_view sp = "Hello";
+  EXPECT_EQ("\"Hello\"", Print(sp));
+}
+
+TEST(PrintStringViewTest, UnprintableCharacters) {
+  const char str[] = "NUL (\0) and \r\t";
+  const ::absl::string_view sp(str, sizeof(str) - 1);
+  EXPECT_EQ("\"NUL (\\0) and \\r\\t\"", Print(sp));
+}
+
+#endif  // GTEST_HAS_ABSL
+
+// Tests printing STL containers.
+
+TEST(PrintStlContainerTest, EmptyDeque) {
+  deque<char> empty;
+  EXPECT_EQ("{}", Print(empty));
+}
+
+TEST(PrintStlContainerTest, NonEmptyDeque) {
+  deque<int> non_empty;
+  non_empty.push_back(1);
+  non_empty.push_back(3);
+  EXPECT_EQ("{ 1, 3 }", Print(non_empty));
+}
+
+
+TEST(PrintStlContainerTest, OneElementHashMap) {
+  ::std::unordered_map<int, char> map1;
+  map1[1] = 'a';
+  EXPECT_EQ("{ (1, 'a' (97, 0x61)) }", Print(map1));
+}
+
+TEST(PrintStlContainerTest, HashMultiMap) {
+  ::std::unordered_multimap<int, bool> map1;
+  map1.insert(make_pair(5, true));
+  map1.insert(make_pair(5, false));
+
+  // Elements of hash_multimap can be printed in any order.
+  const std::string result = Print(map1);
+  EXPECT_TRUE(result == "{ (5, true), (5, false) }" ||
+              result == "{ (5, false), (5, true) }")
+                  << " where Print(map1) returns \"" << result << "\".";
+}
+
+
+
+TEST(PrintStlContainerTest, HashSet) {
+  ::std::unordered_set<int> set1;
+  set1.insert(1);
+  EXPECT_EQ("{ 1 }", Print(set1));
+}
+
+TEST(PrintStlContainerTest, HashMultiSet) {
+  const int kSize = 5;
+  int a[kSize] = { 1, 1, 2, 5, 1 };
+  ::std::unordered_multiset<int> set1(a, a + kSize);
+
+  // Elements of hash_multiset can be printed in any order.
+  const std::string result = Print(set1);
+  const std::string expected_pattern = "{ d, d, d, d, d }";  // d means a digit.
+
+  // Verifies the result matches the expected pattern; also extracts
+  // the numbers in the result.
+  ASSERT_EQ(expected_pattern.length(), result.length());
+  std::vector<int> numbers;
+  for (size_t i = 0; i != result.length(); i++) {
+    if (expected_pattern[i] == 'd') {
+      ASSERT_NE(isdigit(static_cast<unsigned char>(result[i])), 0);
+      numbers.push_back(result[i] - '0');
+    } else {
+      EXPECT_EQ(expected_pattern[i], result[i]) << " where result is "
+                                                << result;
+    }
+  }
+
+  // Makes sure the result contains the right numbers.
+  std::sort(numbers.begin(), numbers.end());
+  std::sort(a, a + kSize);
+  EXPECT_TRUE(std::equal(a, a + kSize, numbers.begin()));
+}
+
+
+TEST(PrintStlContainerTest, List) {
+  const std::string a[] = {"hello", "world"};
+  const list<std::string> strings(a, a + 2);
+  EXPECT_EQ("{ \"hello\", \"world\" }", Print(strings));
+}
+
+TEST(PrintStlContainerTest, Map) {
+  map<int, bool> map1;
+  map1[1] = true;
+  map1[5] = false;
+  map1[3] = true;
+  EXPECT_EQ("{ (1, true), (3, true), (5, false) }", Print(map1));
+}
+
+TEST(PrintStlContainerTest, MultiMap) {
+  multimap<bool, int> map1;
+  // The make_pair template function would deduce the type as
+  // pair<bool, int> here, and since the key part in a multimap has to
+  // be constant, without a templated ctor in the pair class (as in
+  // libCstd on Solaris), make_pair call would fail to compile as no
+  // implicit conversion is found.  Thus explicit typename is used
+  // here instead.
+  map1.insert(pair<const bool, int>(true, 0));
+  map1.insert(pair<const bool, int>(true, 1));
+  map1.insert(pair<const bool, int>(false, 2));
+  EXPECT_EQ("{ (false, 2), (true, 0), (true, 1) }", Print(map1));
+}
+
+TEST(PrintStlContainerTest, Set) {
+  const unsigned int a[] = { 3, 0, 5 };
+  set<unsigned int> set1(a, a + 3);
+  EXPECT_EQ("{ 0, 3, 5 }", Print(set1));
+}
+
+TEST(PrintStlContainerTest, MultiSet) {
+  const int a[] = { 1, 1, 2, 5, 1 };
+  multiset<int> set1(a, a + 5);
+  EXPECT_EQ("{ 1, 1, 1, 2, 5 }", Print(set1));
+}
+
+
+TEST(PrintStlContainerTest, SinglyLinkedList) {
+  int a[] = { 9, 2, 8 };
+  const std::forward_list<int> ints(a, a + 3);
+  EXPECT_EQ("{ 9, 2, 8 }", Print(ints));
+}
+
+TEST(PrintStlContainerTest, Pair) {
+  pair<const bool, int> p(true, 5);
+  EXPECT_EQ("(true, 5)", Print(p));
+}
+
+TEST(PrintStlContainerTest, Vector) {
+  vector<int> v;
+  v.push_back(1);
+  v.push_back(2);
+  EXPECT_EQ("{ 1, 2 }", Print(v));
+}
+
+TEST(PrintStlContainerTest, LongSequence) {
+  const int a[100] = { 1, 2, 3 };
+  const vector<int> v(a, a + 100);
+  EXPECT_EQ("{ 1, 2, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "
+            "0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ... }", Print(v));
+}
+
+TEST(PrintStlContainerTest, NestedContainer) {
+  const int a1[] = { 1, 2 };
+  const int a2[] = { 3, 4, 5 };
+  const list<int> l1(a1, a1 + 2);
+  const list<int> l2(a2, a2 + 3);
+
+  vector<list<int> > v;
+  v.push_back(l1);
+  v.push_back(l2);
+  EXPECT_EQ("{ { 1, 2 }, { 3, 4, 5 } }", Print(v));
+}
+
+TEST(PrintStlContainerTest, OneDimensionalNativeArray) {
+  const int a[3] = { 1, 2, 3 };
+  NativeArray<int> b(a, 3, RelationToSourceReference());
+  EXPECT_EQ("{ 1, 2, 3 }", Print(b));
+}
+
+TEST(PrintStlContainerTest, TwoDimensionalNativeArray) {
+  const int a[2][3] = { { 1, 2, 3 }, { 4, 5, 6 } };
+  NativeArray<int[3]> b(a, 2, RelationToSourceReference());
+  EXPECT_EQ("{ { 1, 2, 3 }, { 4, 5, 6 } }", Print(b));
+}
+
+// Tests that a class named iterator isn't treated as a container.
+
+struct iterator {
+  char x;
+};
+
+TEST(PrintStlContainerTest, Iterator) {
+  iterator it = {};
+  EXPECT_EQ("1-byte object <00>", Print(it));
+}
+
+// Tests that a class named const_iterator isn't treated as a container.
+
+struct const_iterator {
+  char x;
+};
+
+TEST(PrintStlContainerTest, ConstIterator) {
+  const_iterator it = {};
+  EXPECT_EQ("1-byte object <00>", Print(it));
+}
+
+// Tests printing ::std::tuples.
+
+// Tuples of various arities.
+TEST(PrintStdTupleTest, VariousSizes) {
+  ::std::tuple<> t0;
+  EXPECT_EQ("()", Print(t0));
+
+  ::std::tuple<int> t1(5);
+  EXPECT_EQ("(5)", Print(t1));
+
+  ::std::tuple<char, bool> t2('a', true);
+  EXPECT_EQ("('a' (97, 0x61), true)", Print(t2));
+
+  ::std::tuple<bool, int, int> t3(false, 2, 3);
+  EXPECT_EQ("(false, 2, 3)", Print(t3));
+
+  ::std::tuple<bool, int, int, int> t4(false, 2, 3, 4);
+  EXPECT_EQ("(false, 2, 3, 4)", Print(t4));
+
+  const char* const str = "8";
+  ::std::tuple<bool, char, short, testing::internal::Int32,  // NOLINT
+               testing::internal::Int64, float, double, const char*, void*,
+               std::string>
+      t10(false, 'a', static_cast<short>(3), 4, 5, 1.5F, -2.5, str,  // NOLINT
+          nullptr, "10");
+  EXPECT_EQ("(false, 'a' (97, 0x61), 3, 4, 5, 1.5, -2.5, " + PrintPointer(str) +
+            " pointing to \"8\", NULL, \"10\")",
+            Print(t10));
+}
+
+// Nested tuples.
+TEST(PrintStdTupleTest, NestedTuple) {
+  ::std::tuple< ::std::tuple<int, bool>, char> nested(
+      ::std::make_tuple(5, true), 'a');
+  EXPECT_EQ("((5, true), 'a' (97, 0x61))", Print(nested));
+}
+
+TEST(PrintNullptrT, Basic) {
+  EXPECT_EQ("(nullptr)", Print(nullptr));
+}
+
+TEST(PrintReferenceWrapper, Printable) {
+  int x = 5;
+  EXPECT_EQ("@" + PrintPointer(&x) + " 5", Print(std::ref(x)));
+  EXPECT_EQ("@" + PrintPointer(&x) + " 5", Print(std::cref(x)));
+}
+
+TEST(PrintReferenceWrapper, Unprintable) {
+  ::foo::UnprintableInFoo up;
+  EXPECT_EQ(
+      "@" + PrintPointer(&up) +
+          " 16-byte object <EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>",
+      Print(std::ref(up)));
+  EXPECT_EQ(
+      "@" + PrintPointer(&up) +
+          " 16-byte object <EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>",
+      Print(std::cref(up)));
+}
+
+// Tests printing user-defined unprintable types.
+
+// Unprintable types in the global namespace.
+TEST(PrintUnprintableTypeTest, InGlobalNamespace) {
+  EXPECT_EQ("1-byte object <00>",
+            Print(UnprintableTemplateInGlobal<char>()));
+}
+
+// Unprintable types in a user namespace.
+TEST(PrintUnprintableTypeTest, InUserNamespace) {
+  EXPECT_EQ("16-byte object <EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>",
+            Print(::foo::UnprintableInFoo()));
+}
+
+// Unprintable types are that too big to be printed completely.
+
+struct Big {
+  Big() { memset(array, 0, sizeof(array)); }
+  char array[257];
+};
+
+TEST(PrintUnpritableTypeTest, BigObject) {
+  EXPECT_EQ("257-byte object <00-00 00-00 00-00 00-00 00-00 00-00 "
+            "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 "
+            "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 "
+            "00-00 00-00 00-00 00-00 00-00 00-00 ... 00-00 00-00 00-00 "
+            "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 "
+            "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 "
+            "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00>",
+            Print(Big()));
+}
+
+// Tests printing user-defined streamable types.
+
+// Streamable types in the global namespace.
+TEST(PrintStreamableTypeTest, InGlobalNamespace) {
+  StreamableInGlobal x;
+  EXPECT_EQ("StreamableInGlobal", Print(x));
+  EXPECT_EQ("StreamableInGlobal*", Print(&x));
+}
+
+// Printable template types in a user namespace.
+TEST(PrintStreamableTypeTest, TemplateTypeInUserNamespace) {
+  EXPECT_EQ("StreamableTemplateInFoo: 0",
+            Print(::foo::StreamableTemplateInFoo<int>()));
+}
+
+// Tests printing a user-defined recursive container type that has a <<
+// operator.
+TEST(PrintStreamableTypeTest, PathLikeInUserNamespace) {
+  ::foo::PathLike x;
+  EXPECT_EQ("Streamable-PathLike", Print(x));
+  const ::foo::PathLike cx;
+  EXPECT_EQ("Streamable-PathLike", Print(cx));
+}
+
+// Tests printing user-defined types that have a PrintTo() function.
+TEST(PrintPrintableTypeTest, InUserNamespace) {
+  EXPECT_EQ("PrintableViaPrintTo: 0",
+            Print(::foo::PrintableViaPrintTo()));
+}
+
+// Tests printing a pointer to a user-defined type that has a <<
+// operator for its pointer.
+TEST(PrintPrintableTypeTest, PointerInUserNamespace) {
+  ::foo::PointerPrintable x;
+  EXPECT_EQ("PointerPrintable*", Print(&x));
+}
+
+// Tests printing user-defined class template that have a PrintTo() function.
+TEST(PrintPrintableTypeTest, TemplateInUserNamespace) {
+  EXPECT_EQ("PrintableViaPrintToTemplate: 5",
+            Print(::foo::PrintableViaPrintToTemplate<int>(5)));
+}
+
+// Tests that the universal printer prints both the address and the
+// value of a reference.
+TEST(PrintReferenceTest, PrintsAddressAndValue) {
+  int n = 5;
+  EXPECT_EQ("@" + PrintPointer(&n) + " 5", PrintByRef(n));
+
+  int a[2][3] = {
+    { 0, 1, 2 },
+    { 3, 4, 5 }
+  };
+  EXPECT_EQ("@" + PrintPointer(a) + " { { 0, 1, 2 }, { 3, 4, 5 } }",
+            PrintByRef(a));
+
+  const ::foo::UnprintableInFoo x;
+  EXPECT_EQ("@" + PrintPointer(&x) + " 16-byte object "
+            "<EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>",
+            PrintByRef(x));
+}
+
+// Tests that the universal printer prints a function pointer passed by
+// reference.
+TEST(PrintReferenceTest, HandlesFunctionPointer) {
+  void (*fp)(int n) = &MyFunction;
+  const std::string fp_pointer_string =
+      PrintPointer(reinterpret_cast<const void*>(&fp));
+  // We cannot directly cast &MyFunction to const void* because the
+  // standard disallows casting between pointers to functions and
+  // pointers to objects, and some compilers (e.g. GCC 3.4) enforce
+  // this limitation.
+  const std::string fp_string = PrintPointer(reinterpret_cast<const void*>(
+      reinterpret_cast<internal::BiggestInt>(fp)));
+  EXPECT_EQ("@" + fp_pointer_string + " " + fp_string,
+            PrintByRef(fp));
+}
+
+// Tests that the universal printer prints a member function pointer
+// passed by reference.
+TEST(PrintReferenceTest, HandlesMemberFunctionPointer) {
+  int (Foo::*p)(char ch) = &Foo::MyMethod;
+  EXPECT_TRUE(HasPrefix(
+      PrintByRef(p),
+      "@" + PrintPointer(reinterpret_cast<const void*>(&p)) + " " +
+          Print(sizeof(p)) + "-byte object "));
+
+  char (Foo::*p2)(int n) = &Foo::MyVirtualMethod;
+  EXPECT_TRUE(HasPrefix(
+      PrintByRef(p2),
+      "@" + PrintPointer(reinterpret_cast<const void*>(&p2)) + " " +
+          Print(sizeof(p2)) + "-byte object "));
+}
+
+// Tests that the universal printer prints a member variable pointer
+// passed by reference.
+TEST(PrintReferenceTest, HandlesMemberVariablePointer) {
+  int Foo::*p = &Foo::value;  // NOLINT
+  EXPECT_TRUE(HasPrefix(
+      PrintByRef(p),
+      "@" + PrintPointer(&p) + " " + Print(sizeof(p)) + "-byte object "));
+}
+
+// Tests that FormatForComparisonFailureMessage(), which is used to print
+// an operand in a comparison assertion (e.g. ASSERT_EQ) when the assertion
+// fails, formats the operand in the desired way.
+
+// scalar
+TEST(FormatForComparisonFailureMessageTest, WorksForScalar) {
+  EXPECT_STREQ("123",
+               FormatForComparisonFailureMessage(123, 124).c_str());
+}
+
+// non-char pointer
+TEST(FormatForComparisonFailureMessageTest, WorksForNonCharPointer) {
+  int n = 0;
+  EXPECT_EQ(PrintPointer(&n),
+            FormatForComparisonFailureMessage(&n, &n).c_str());
+}
+
+// non-char array
+TEST(FormatForComparisonFailureMessageTest, FormatsNonCharArrayAsPointer) {
+  // In expression 'array == x', 'array' is compared by pointer.
+  // Therefore we want to print an array operand as a pointer.
+  int n[] = { 1, 2, 3 };
+  EXPECT_EQ(PrintPointer(n),
+            FormatForComparisonFailureMessage(n, n).c_str());
+}
+
+// Tests formatting a char pointer when it's compared with another pointer.
+// In this case we want to print it as a raw pointer, as the comparison is by
+// pointer.
+
+// char pointer vs pointer
+TEST(FormatForComparisonFailureMessageTest, WorksForCharPointerVsPointer) {
+  // In expression 'p == x', where 'p' and 'x' are (const or not) char
+  // pointers, the operands are compared by pointer.  Therefore we
+  // want to print 'p' as a pointer instead of a C string (we don't
+  // even know if it's supposed to point to a valid C string).
+
+  // const char*
+  const char* s = "hello";
+  EXPECT_EQ(PrintPointer(s),
+            FormatForComparisonFailureMessage(s, s).c_str());
+
+  // char*
+  char ch = 'a';
+  EXPECT_EQ(PrintPointer(&ch),
+            FormatForComparisonFailureMessage(&ch, &ch).c_str());
+}
+
+// wchar_t pointer vs pointer
+TEST(FormatForComparisonFailureMessageTest, WorksForWCharPointerVsPointer) {
+  // In expression 'p == x', where 'p' and 'x' are (const or not) char
+  // pointers, the operands are compared by pointer.  Therefore we
+  // want to print 'p' as a pointer instead of a wide C string (we don't
+  // even know if it's supposed to point to a valid wide C string).
+
+  // const wchar_t*
+  const wchar_t* s = L"hello";
+  EXPECT_EQ(PrintPointer(s),
+            FormatForComparisonFailureMessage(s, s).c_str());
+
+  // wchar_t*
+  wchar_t ch = L'a';
+  EXPECT_EQ(PrintPointer(&ch),
+            FormatForComparisonFailureMessage(&ch, &ch).c_str());
+}
+
+// Tests formatting a char pointer when it's compared to a string object.
+// In this case we want to print the char pointer as a C string.
+
+// char pointer vs std::string
+TEST(FormatForComparisonFailureMessageTest, WorksForCharPointerVsStdString) {
+  const char* s = "hello \"world";
+  EXPECT_STREQ("\"hello \\\"world\"",  // The string content should be escaped.
+               FormatForComparisonFailureMessage(s, ::std::string()).c_str());
+
+  // char*
+  char str[] = "hi\1";
+  char* p = str;
+  EXPECT_STREQ("\"hi\\x1\"",  // The string content should be escaped.
+               FormatForComparisonFailureMessage(p, ::std::string()).c_str());
+}
+
+#if GTEST_HAS_STD_WSTRING
+// wchar_t pointer vs std::wstring
+TEST(FormatForComparisonFailureMessageTest, WorksForWCharPointerVsStdWString) {
+  const wchar_t* s = L"hi \"world";
+  EXPECT_STREQ("L\"hi \\\"world\"",  // The string content should be escaped.
+               FormatForComparisonFailureMessage(s, ::std::wstring()).c_str());
+
+  // wchar_t*
+  wchar_t str[] = L"hi\1";
+  wchar_t* p = str;
+  EXPECT_STREQ("L\"hi\\x1\"",  // The string content should be escaped.
+               FormatForComparisonFailureMessage(p, ::std::wstring()).c_str());
+}
+#endif
+
+// Tests formatting a char array when it's compared with a pointer or array.
+// In this case we want to print the array as a row pointer, as the comparison
+// is by pointer.
+
+// char array vs pointer
+TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsPointer) {
+  char str[] = "hi \"world\"";
+  char* p = nullptr;
+  EXPECT_EQ(PrintPointer(str),
+            FormatForComparisonFailureMessage(str, p).c_str());
+}
+
+// char array vs char array
+TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsCharArray) {
+  const char str[] = "hi \"world\"";
+  EXPECT_EQ(PrintPointer(str),
+            FormatForComparisonFailureMessage(str, str).c_str());
+}
+
+// wchar_t array vs pointer
+TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsPointer) {
+  wchar_t str[] = L"hi \"world\"";
+  wchar_t* p = nullptr;
+  EXPECT_EQ(PrintPointer(str),
+            FormatForComparisonFailureMessage(str, p).c_str());
+}
+
+// wchar_t array vs wchar_t array
+TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsWCharArray) {
+  const wchar_t str[] = L"hi \"world\"";
+  EXPECT_EQ(PrintPointer(str),
+            FormatForComparisonFailureMessage(str, str).c_str());
+}
+
+// Tests formatting a char array when it's compared with a string object.
+// In this case we want to print the array as a C string.
+
+// char array vs std::string
+TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsStdString) {
+  const char str[] = "hi \"world\"";
+  EXPECT_STREQ("\"hi \\\"world\\\"\"",  // The content should be escaped.
+               FormatForComparisonFailureMessage(str, ::std::string()).c_str());
+}
+
+#if GTEST_HAS_STD_WSTRING
+// wchar_t array vs std::wstring
+TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsStdWString) {
+  const wchar_t str[] = L"hi \"w\0rld\"";
+  EXPECT_STREQ(
+      "L\"hi \\\"w\"",  // The content should be escaped.
+                        // Embedded NUL terminates the string.
+      FormatForComparisonFailureMessage(str, ::std::wstring()).c_str());
+}
+#endif
+
+// Useful for testing PrintToString().  We cannot use EXPECT_EQ()
+// there as its implementation uses PrintToString().  The caller must
+// ensure that 'value' has no side effect.
+#define EXPECT_PRINT_TO_STRING_(value, expected_string)         \
+  EXPECT_TRUE(PrintToString(value) == (expected_string))        \
+      << " where " #value " prints as " << (PrintToString(value))
+
+TEST(PrintToStringTest, WorksForScalar) {
+  EXPECT_PRINT_TO_STRING_(123, "123");
+}
+
+TEST(PrintToStringTest, WorksForPointerToConstChar) {
+  const char* p = "hello";
+  EXPECT_PRINT_TO_STRING_(p, "\"hello\"");
+}
+
+TEST(PrintToStringTest, WorksForPointerToNonConstChar) {
+  char s[] = "hello";
+  char* p = s;
+  EXPECT_PRINT_TO_STRING_(p, "\"hello\"");
+}
+
+TEST(PrintToStringTest, EscapesForPointerToConstChar) {
+  const char* p = "hello\n";
+  EXPECT_PRINT_TO_STRING_(p, "\"hello\\n\"");
+}
+
+TEST(PrintToStringTest, EscapesForPointerToNonConstChar) {
+  char s[] = "hello\1";
+  char* p = s;
+  EXPECT_PRINT_TO_STRING_(p, "\"hello\\x1\"");
+}
+
+TEST(PrintToStringTest, WorksForArray) {
+  int n[3] = { 1, 2, 3 };
+  EXPECT_PRINT_TO_STRING_(n, "{ 1, 2, 3 }");
+}
+
+TEST(PrintToStringTest, WorksForCharArray) {
+  char s[] = "hello";
+  EXPECT_PRINT_TO_STRING_(s, "\"hello\"");
+}
+
+TEST(PrintToStringTest, WorksForCharArrayWithEmbeddedNul) {
+  const char str_with_nul[] = "hello\0 world";
+  EXPECT_PRINT_TO_STRING_(str_with_nul, "\"hello\\0 world\"");
+
+  char mutable_str_with_nul[] = "hello\0 world";
+  EXPECT_PRINT_TO_STRING_(mutable_str_with_nul, "\"hello\\0 world\"");
+}
+
+  TEST(PrintToStringTest, ContainsNonLatin) {
+  // Sanity test with valid UTF-8. Prints both in hex and as text.
+  std::string non_ascii_str = ::std::string("오전 4:30");
+  EXPECT_PRINT_TO_STRING_(non_ascii_str,
+                          "\"\\xEC\\x98\\xA4\\xEC\\xA0\\x84 4:30\"\n"
+                          "    As Text: \"오전 4:30\"");
+  non_ascii_str = ::std::string("From ä — ẑ");
+  EXPECT_PRINT_TO_STRING_(non_ascii_str,
+                          "\"From \\xC3\\xA4 \\xE2\\x80\\x94 \\xE1\\xBA\\x91\""
+                          "\n    As Text: \"From ä — ẑ\"");
+}
+
+TEST(IsValidUTF8Test, IllFormedUTF8) {
+  // The following test strings are ill-formed UTF-8 and are printed
+  // as hex only (or ASCII, in case of ASCII bytes) because IsValidUTF8() is
+  // expected to fail, thus output does not contain "As Text:".
+
+  static const char *const kTestdata[][2] = {
+    // 2-byte lead byte followed by a single-byte character.
+    {"\xC3\x74", "\"\\xC3t\""},
+    // Valid 2-byte character followed by an orphan trail byte.
+    {"\xC3\x84\xA4", "\"\\xC3\\x84\\xA4\""},
+    // Lead byte without trail byte.
+    {"abc\xC3", "\"abc\\xC3\""},
+    // 3-byte lead byte, single-byte character, orphan trail byte.
+    {"x\xE2\x70\x94", "\"x\\xE2p\\x94\""},
+    // Truncated 3-byte character.
+    {"\xE2\x80", "\"\\xE2\\x80\""},
+    // Truncated 3-byte character followed by valid 2-byte char.
+    {"\xE2\x80\xC3\x84", "\"\\xE2\\x80\\xC3\\x84\""},
+    // Truncated 3-byte character followed by a single-byte character.
+    {"\xE2\x80\x7A", "\"\\xE2\\x80z\""},
+    // 3-byte lead byte followed by valid 3-byte character.
+    {"\xE2\xE2\x80\x94", "\"\\xE2\\xE2\\x80\\x94\""},
+    // 4-byte lead byte followed by valid 3-byte character.
+    {"\xF0\xE2\x80\x94", "\"\\xF0\\xE2\\x80\\x94\""},
+    // Truncated 4-byte character.
+    {"\xF0\xE2\x80", "\"\\xF0\\xE2\\x80\""},
+     // Invalid UTF-8 byte sequences embedded in other chars.
+    {"abc\xE2\x80\x94\xC3\x74xyc", "\"abc\\xE2\\x80\\x94\\xC3txyc\""},
+    {"abc\xC3\x84\xE2\x80\xC3\x84xyz",
+     "\"abc\\xC3\\x84\\xE2\\x80\\xC3\\x84xyz\""},
+    // Non-shortest UTF-8 byte sequences are also ill-formed.
+    // The classics: xC0, xC1 lead byte.
+    {"\xC0\x80", "\"\\xC0\\x80\""},
+    {"\xC1\x81", "\"\\xC1\\x81\""},
+    // Non-shortest sequences.
+    {"\xE0\x80\x80", "\"\\xE0\\x80\\x80\""},
+    {"\xf0\x80\x80\x80", "\"\\xF0\\x80\\x80\\x80\""},
+    // Last valid code point before surrogate range, should be printed as text,
+    // too.
+    {"\xED\x9F\xBF", "\"\\xED\\x9F\\xBF\"\n    As Text: \"퟿\""},
+    // Start of surrogate lead. Surrogates are not printed as text.
+    {"\xED\xA0\x80", "\"\\xED\\xA0\\x80\""},
+    // Last non-private surrogate lead.
+    {"\xED\xAD\xBF", "\"\\xED\\xAD\\xBF\""},
+    // First private-use surrogate lead.
+    {"\xED\xAE\x80", "\"\\xED\\xAE\\x80\""},
+    // Last private-use surrogate lead.
+    {"\xED\xAF\xBF", "\"\\xED\\xAF\\xBF\""},
+    // Mid-point of surrogate trail.
+    {"\xED\xB3\xBF", "\"\\xED\\xB3\\xBF\""},
+    // First valid code point after surrogate range, should be printed as text,
+    // too.
+    {"\xEE\x80\x80", "\"\\xEE\\x80\\x80\"\n    As Text: \"\""}
+  };
+
+  for (int i = 0; i < int(sizeof(kTestdata)/sizeof(kTestdata[0])); ++i) {
+    EXPECT_PRINT_TO_STRING_(kTestdata[i][0], kTestdata[i][1]);
+  }
+}
+
+#undef EXPECT_PRINT_TO_STRING_
+
+TEST(UniversalTersePrintTest, WorksForNonReference) {
+  ::std::stringstream ss;
+  UniversalTersePrint(123, &ss);
+  EXPECT_EQ("123", ss.str());
+}
+
+TEST(UniversalTersePrintTest, WorksForReference) {
+  const int& n = 123;
+  ::std::stringstream ss;
+  UniversalTersePrint(n, &ss);
+  EXPECT_EQ("123", ss.str());
+}
+
+TEST(UniversalTersePrintTest, WorksForCString) {
+  const char* s1 = "abc";
+  ::std::stringstream ss1;
+  UniversalTersePrint(s1, &ss1);
+  EXPECT_EQ("\"abc\"", ss1.str());
+
+  char* s2 = const_cast<char*>(s1);
+  ::std::stringstream ss2;
+  UniversalTersePrint(s2, &ss2);
+  EXPECT_EQ("\"abc\"", ss2.str());
+
+  const char* s3 = nullptr;
+  ::std::stringstream ss3;
+  UniversalTersePrint(s3, &ss3);
+  EXPECT_EQ("NULL", ss3.str());
+}
+
+TEST(UniversalPrintTest, WorksForNonReference) {
+  ::std::stringstream ss;
+  UniversalPrint(123, &ss);
+  EXPECT_EQ("123", ss.str());
+}
+
+TEST(UniversalPrintTest, WorksForReference) {
+  const int& n = 123;
+  ::std::stringstream ss;
+  UniversalPrint(n, &ss);
+  EXPECT_EQ("123", ss.str());
+}
+
+TEST(UniversalPrintTest, WorksForCString) {
+  const char* s1 = "abc";
+  ::std::stringstream ss1;
+  UniversalPrint(s1, &ss1);
+  EXPECT_EQ(PrintPointer(s1) + " pointing to \"abc\"", std::string(ss1.str()));
+
+  char* s2 = const_cast<char*>(s1);
+  ::std::stringstream ss2;
+  UniversalPrint(s2, &ss2);
+  EXPECT_EQ(PrintPointer(s2) + " pointing to \"abc\"", std::string(ss2.str()));
+
+  const char* s3 = nullptr;
+  ::std::stringstream ss3;
+  UniversalPrint(s3, &ss3);
+  EXPECT_EQ("NULL", ss3.str());
+}
+
+TEST(UniversalPrintTest, WorksForCharArray) {
+  const char str[] = "\"Line\0 1\"\nLine 2";
+  ::std::stringstream ss1;
+  UniversalPrint(str, &ss1);
+  EXPECT_EQ("\"\\\"Line\\0 1\\\"\\nLine 2\"", ss1.str());
+
+  const char mutable_str[] = "\"Line\0 1\"\nLine 2";
+  ::std::stringstream ss2;
+  UniversalPrint(mutable_str, &ss2);
+  EXPECT_EQ("\"\\\"Line\\0 1\\\"\\nLine 2\"", ss2.str());
+}
+
+TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsEmptyTuple) {
+  Strings result = UniversalTersePrintTupleFieldsToStrings(::std::make_tuple());
+  EXPECT_EQ(0u, result.size());
+}
+
+TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsOneTuple) {
+  Strings result = UniversalTersePrintTupleFieldsToStrings(
+      ::std::make_tuple(1));
+  ASSERT_EQ(1u, result.size());
+  EXPECT_EQ("1", result[0]);
+}
+
+TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsTwoTuple) {
+  Strings result = UniversalTersePrintTupleFieldsToStrings(
+      ::std::make_tuple(1, 'a'));
+  ASSERT_EQ(2u, result.size());
+  EXPECT_EQ("1", result[0]);
+  EXPECT_EQ("'a' (97, 0x61)", result[1]);
+}
+
+TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsTersely) {
+  const int n = 1;
+  Strings result = UniversalTersePrintTupleFieldsToStrings(
+      ::std::tuple<const int&, const char*>(n, "a"));
+  ASSERT_EQ(2u, result.size());
+  EXPECT_EQ("1", result[0]);
+  EXPECT_EQ("\"a\"", result[1]);
+}
+
+#if GTEST_HAS_ABSL
+
+TEST(PrintOptionalTest, Basic) {
+  absl::optional<int> value;
+  EXPECT_EQ("(nullopt)", PrintToString(value));
+  value = {7};
+  EXPECT_EQ("(7)", PrintToString(value));
+  EXPECT_EQ("(1.1)", PrintToString(absl::optional<double>{1.1}));
+  EXPECT_EQ("(\"A\")", PrintToString(absl::optional<std::string>{"A"}));
+}
+
+struct NonPrintable {
+  unsigned char contents = 17;
+};
+
+TEST(PrintOneofTest, Basic) {
+  using Type = absl::variant<int, StreamableInGlobal, NonPrintable>;
+  EXPECT_EQ("('int' with value 7)", PrintToString(Type(7)));
+  EXPECT_EQ("('StreamableInGlobal' with value StreamableInGlobal)",
+            PrintToString(Type(StreamableInGlobal{})));
+  EXPECT_EQ(
+      "('testing::gtest_printers_test::NonPrintable' with value 1-byte object "
+      "<11>)",
+      PrintToString(Type(NonPrintable{})));
+}
+#endif  // GTEST_HAS_ABSL
+namespace {
+class string_ref;
+
+/**
+ * This is a synthetic pointer to a fixed size string.
+ */
+class string_ptr {
+ public:
+  string_ptr(const char* data, size_t size) : data_(data), size_(size) {}
+
+  string_ptr& operator++() noexcept {
+    data_ += size_;
+    return *this;
+  }
+
+  string_ref operator*() const noexcept;
+
+ private:
+  const char* data_;
+  size_t size_;
+};
+
+/**
+ * This is a synthetic reference of a fixed size string.
+ */
+class string_ref {
+ public:
+  string_ref(const char* data, size_t size) : data_(data), size_(size) {}
+
+  string_ptr operator&() const noexcept { return {data_, size_}; }  // NOLINT
+
+  bool operator==(const char* s) const noexcept {
+    if (size_ > 0 && data_[size_ - 1] != 0) {
+      return std::string(data_, size_) == std::string(s);
+    } else {
+      return std::string(data_) == std::string(s);
+    }
+  }
+
+ private:
+  const char* data_;
+  size_t size_;
+};
+
+string_ref string_ptr::operator*() const noexcept { return {data_, size_}; }
+
+TEST(string_ref, compare) {
+  const char* s = "alex\0davidjohn\0";
+  string_ptr ptr(s, 5);
+  EXPECT_EQ(*ptr, "alex");
+  EXPECT_TRUE(*ptr == "alex");
+  ++ptr;
+  EXPECT_EQ(*ptr, "david");
+  EXPECT_TRUE(*ptr == "david");
+  ++ptr;
+  EXPECT_EQ(*ptr, "john");
+}
+
+}  // namespace
+
+}  // namespace gtest_printers_test
+}  // namespace testing
diff --git a/build/_deps/googletest-src/googletest/test/googletest-shuffle-test.py b/build/_deps/googletest-src/googletest/test/googletest-shuffle-test.py
new file mode 100755
index 0000000000000000000000000000000000000000..573cc5eca3fce458aa3ac3e39850f47bb382e55b
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-shuffle-test.py
@@ -0,0 +1,323 @@
+#!/usr/bin/env python
+#
+# Copyright 2009 Google Inc. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Verifies that test shuffling works."""
+
+import os
+import gtest_test_utils
+
+# Command to run the googletest-shuffle-test_ program.
+COMMAND = gtest_test_utils.GetTestExecutablePath('googletest-shuffle-test_')
+
+# The environment variables for test sharding.
+TOTAL_SHARDS_ENV_VAR = 'GTEST_TOTAL_SHARDS'
+SHARD_INDEX_ENV_VAR = 'GTEST_SHARD_INDEX'
+
+TEST_FILTER = 'A*.A:A*.B:C*'
+
+ALL_TESTS = []
+ACTIVE_TESTS = []
+FILTERED_TESTS = []
+SHARDED_TESTS = []
+
+SHUFFLED_ALL_TESTS = []
+SHUFFLED_ACTIVE_TESTS = []
+SHUFFLED_FILTERED_TESTS = []
+SHUFFLED_SHARDED_TESTS = []
+
+
+def AlsoRunDisabledTestsFlag():
+  return '--gtest_also_run_disabled_tests'
+
+
+def FilterFlag(test_filter):
+  return '--gtest_filter=%s' % (test_filter,)
+
+
+def RepeatFlag(n):
+  return '--gtest_repeat=%s' % (n,)
+
+
+def ShuffleFlag():
+  return '--gtest_shuffle'
+
+
+def RandomSeedFlag(n):
+  return '--gtest_random_seed=%s' % (n,)
+
+
+def RunAndReturnOutput(extra_env, args):
+  """Runs the test program and returns its output."""
+
+  environ_copy = os.environ.copy()
+  environ_copy.update(extra_env)
+
+  return gtest_test_utils.Subprocess([COMMAND] + args, env=environ_copy).output
+
+
+def GetTestsForAllIterations(extra_env, args):
+  """Runs the test program and returns a list of test lists.
+
+  Args:
+    extra_env: a map from environment variables to their values
+    args: command line flags to pass to googletest-shuffle-test_
+
+  Returns:
+    A list where the i-th element is the list of tests run in the i-th
+    test iteration.
+  """
+
+  test_iterations = []
+  for line in RunAndReturnOutput(extra_env, args).split('\n'):
+    if line.startswith('----'):
+      tests = []
+      test_iterations.append(tests)
+    elif line.strip():
+      tests.append(line.strip())  # 'TestCaseName.TestName'
+
+  return test_iterations
+
+
+def GetTestCases(tests):
+  """Returns a list of test cases in the given full test names.
+
+  Args:
+    tests: a list of full test names
+
+  Returns:
+    A list of test cases from 'tests', in their original order.
+    Consecutive duplicates are removed.
+  """
+
+  test_cases = []
+  for test in tests:
+    test_case = test.split('.')[0]
+    if not test_case in test_cases:
+      test_cases.append(test_case)
+
+  return test_cases
+
+
+def CalculateTestLists():
+  """Calculates the list of tests run under different flags."""
+
+  if not ALL_TESTS:
+    ALL_TESTS.extend(
+        GetTestsForAllIterations({}, [AlsoRunDisabledTestsFlag()])[0])
+
+  if not ACTIVE_TESTS:
+    ACTIVE_TESTS.extend(GetTestsForAllIterations({}, [])[0])
+
+  if not FILTERED_TESTS:
+    FILTERED_TESTS.extend(
+        GetTestsForAllIterations({}, [FilterFlag(TEST_FILTER)])[0])
+
+  if not SHARDED_TESTS:
+    SHARDED_TESTS.extend(
+        GetTestsForAllIterations({TOTAL_SHARDS_ENV_VAR: '3',
+                                  SHARD_INDEX_ENV_VAR: '1'},
+                                 [])[0])
+
+  if not SHUFFLED_ALL_TESTS:
+    SHUFFLED_ALL_TESTS.extend(GetTestsForAllIterations(
+        {}, [AlsoRunDisabledTestsFlag(), ShuffleFlag(), RandomSeedFlag(1)])[0])
+
+  if not SHUFFLED_ACTIVE_TESTS:
+    SHUFFLED_ACTIVE_TESTS.extend(GetTestsForAllIterations(
+        {}, [ShuffleFlag(), RandomSeedFlag(1)])[0])
+
+  if not SHUFFLED_FILTERED_TESTS:
+    SHUFFLED_FILTERED_TESTS.extend(GetTestsForAllIterations(
+        {}, [ShuffleFlag(), RandomSeedFlag(1), FilterFlag(TEST_FILTER)])[0])
+
+  if not SHUFFLED_SHARDED_TESTS:
+    SHUFFLED_SHARDED_TESTS.extend(
+        GetTestsForAllIterations({TOTAL_SHARDS_ENV_VAR: '3',
+                                  SHARD_INDEX_ENV_VAR: '1'},
+                                 [ShuffleFlag(), RandomSeedFlag(1)])[0])
+
+
+class GTestShuffleUnitTest(gtest_test_utils.TestCase):
+  """Tests test shuffling."""
+
+  def setUp(self):
+    CalculateTestLists()
+
+  def testShufflePreservesNumberOfTests(self):
+    self.assertEqual(len(ALL_TESTS), len(SHUFFLED_ALL_TESTS))
+    self.assertEqual(len(ACTIVE_TESTS), len(SHUFFLED_ACTIVE_TESTS))
+    self.assertEqual(len(FILTERED_TESTS), len(SHUFFLED_FILTERED_TESTS))
+    self.assertEqual(len(SHARDED_TESTS), len(SHUFFLED_SHARDED_TESTS))
+
+  def testShuffleChangesTestOrder(self):
+    self.assert_(SHUFFLED_ALL_TESTS != ALL_TESTS, SHUFFLED_ALL_TESTS)
+    self.assert_(SHUFFLED_ACTIVE_TESTS != ACTIVE_TESTS, SHUFFLED_ACTIVE_TESTS)
+    self.assert_(SHUFFLED_FILTERED_TESTS != FILTERED_TESTS,
+                 SHUFFLED_FILTERED_TESTS)
+    self.assert_(SHUFFLED_SHARDED_TESTS != SHARDED_TESTS,
+                 SHUFFLED_SHARDED_TESTS)
+
+  def testShuffleChangesTestCaseOrder(self):
+    self.assert_(GetTestCases(SHUFFLED_ALL_TESTS) != GetTestCases(ALL_TESTS),
+                 GetTestCases(SHUFFLED_ALL_TESTS))
+    self.assert_(
+        GetTestCases(SHUFFLED_ACTIVE_TESTS) != GetTestCases(ACTIVE_TESTS),
+        GetTestCases(SHUFFLED_ACTIVE_TESTS))
+    self.assert_(
+        GetTestCases(SHUFFLED_FILTERED_TESTS) != GetTestCases(FILTERED_TESTS),
+        GetTestCases(SHUFFLED_FILTERED_TESTS))
+    self.assert_(
+        GetTestCases(SHUFFLED_SHARDED_TESTS) != GetTestCases(SHARDED_TESTS),
+        GetTestCases(SHUFFLED_SHARDED_TESTS))
+
+  def testShuffleDoesNotRepeatTest(self):
+    for test in SHUFFLED_ALL_TESTS:
+      self.assertEqual(1, SHUFFLED_ALL_TESTS.count(test),
+                       '%s appears more than once' % (test,))
+    for test in SHUFFLED_ACTIVE_TESTS:
+      self.assertEqual(1, SHUFFLED_ACTIVE_TESTS.count(test),
+                       '%s appears more than once' % (test,))
+    for test in SHUFFLED_FILTERED_TESTS:
+      self.assertEqual(1, SHUFFLED_FILTERED_TESTS.count(test),
+                       '%s appears more than once' % (test,))
+    for test in SHUFFLED_SHARDED_TESTS:
+      self.assertEqual(1, SHUFFLED_SHARDED_TESTS.count(test),
+                       '%s appears more than once' % (test,))
+
+  def testShuffleDoesNotCreateNewTest(self):
+    for test in SHUFFLED_ALL_TESTS:
+      self.assert_(test in ALL_TESTS, '%s is an invalid test' % (test,))
+    for test in SHUFFLED_ACTIVE_TESTS:
+      self.assert_(test in ACTIVE_TESTS, '%s is an invalid test' % (test,))
+    for test in SHUFFLED_FILTERED_TESTS:
+      self.assert_(test in FILTERED_TESTS, '%s is an invalid test' % (test,))
+    for test in SHUFFLED_SHARDED_TESTS:
+      self.assert_(test in SHARDED_TESTS, '%s is an invalid test' % (test,))
+
+  def testShuffleIncludesAllTests(self):
+    for test in ALL_TESTS:
+      self.assert_(test in SHUFFLED_ALL_TESTS, '%s is missing' % (test,))
+    for test in ACTIVE_TESTS:
+      self.assert_(test in SHUFFLED_ACTIVE_TESTS, '%s is missing' % (test,))
+    for test in FILTERED_TESTS:
+      self.assert_(test in SHUFFLED_FILTERED_TESTS, '%s is missing' % (test,))
+    for test in SHARDED_TESTS:
+      self.assert_(test in SHUFFLED_SHARDED_TESTS, '%s is missing' % (test,))
+
+  def testShuffleLeavesDeathTestsAtFront(self):
+    non_death_test_found = False
+    for test in SHUFFLED_ACTIVE_TESTS:
+      if 'DeathTest.' in test:
+        self.assert_(not non_death_test_found,
+                     '%s appears after a non-death test' % (test,))
+      else:
+        non_death_test_found = True
+
+  def _VerifyTestCasesDoNotInterleave(self, tests):
+    test_cases = []
+    for test in tests:
+      [test_case, _] = test.split('.')
+      if test_cases and test_cases[-1] != test_case:
+        test_cases.append(test_case)
+        self.assertEqual(1, test_cases.count(test_case),
+                         'Test case %s is not grouped together in %s' %
+                         (test_case, tests))
+
+  def testShuffleDoesNotInterleaveTestCases(self):
+    self._VerifyTestCasesDoNotInterleave(SHUFFLED_ALL_TESTS)
+    self._VerifyTestCasesDoNotInterleave(SHUFFLED_ACTIVE_TESTS)
+    self._VerifyTestCasesDoNotInterleave(SHUFFLED_FILTERED_TESTS)
+    self._VerifyTestCasesDoNotInterleave(SHUFFLED_SHARDED_TESTS)
+
+  def testShuffleRestoresOrderAfterEachIteration(self):
+    # Get the test lists in all 3 iterations, using random seed 1, 2,
+    # and 3 respectively.  Google Test picks a different seed in each
+    # iteration, and this test depends on the current implementation
+    # picking successive numbers.  This dependency is not ideal, but
+    # makes the test much easier to write.
+    [tests_in_iteration1, tests_in_iteration2, tests_in_iteration3] = (
+        GetTestsForAllIterations(
+            {}, [ShuffleFlag(), RandomSeedFlag(1), RepeatFlag(3)]))
+
+    # Make sure running the tests with random seed 1 gets the same
+    # order as in iteration 1 above.
+    [tests_with_seed1] = GetTestsForAllIterations(
+        {}, [ShuffleFlag(), RandomSeedFlag(1)])
+    self.assertEqual(tests_in_iteration1, tests_with_seed1)
+
+    # Make sure running the tests with random seed 2 gets the same
+    # order as in iteration 2 above.  Success means that Google Test
+    # correctly restores the test order before re-shuffling at the
+    # beginning of iteration 2.
+    [tests_with_seed2] = GetTestsForAllIterations(
+        {}, [ShuffleFlag(), RandomSeedFlag(2)])
+    self.assertEqual(tests_in_iteration2, tests_with_seed2)
+
+    # Make sure running the tests with random seed 3 gets the same
+    # order as in iteration 3 above.  Success means that Google Test
+    # correctly restores the test order before re-shuffling at the
+    # beginning of iteration 3.
+    [tests_with_seed3] = GetTestsForAllIterations(
+        {}, [ShuffleFlag(), RandomSeedFlag(3)])
+    self.assertEqual(tests_in_iteration3, tests_with_seed3)
+
+  def testShuffleGeneratesNewOrderInEachIteration(self):
+    [tests_in_iteration1, tests_in_iteration2, tests_in_iteration3] = (
+        GetTestsForAllIterations(
+            {}, [ShuffleFlag(), RandomSeedFlag(1), RepeatFlag(3)]))
+
+    self.assert_(tests_in_iteration1 != tests_in_iteration2,
+                 tests_in_iteration1)
+    self.assert_(tests_in_iteration1 != tests_in_iteration3,
+                 tests_in_iteration1)
+    self.assert_(tests_in_iteration2 != tests_in_iteration3,
+                 tests_in_iteration2)
+
+  def testShuffleShardedTestsPreservesPartition(self):
+    # If we run M tests on N shards, the same M tests should be run in
+    # total, regardless of the random seeds used by the shards.
+    [tests1] = GetTestsForAllIterations({TOTAL_SHARDS_ENV_VAR: '3',
+                                         SHARD_INDEX_ENV_VAR: '0'},
+                                        [ShuffleFlag(), RandomSeedFlag(1)])
+    [tests2] = GetTestsForAllIterations({TOTAL_SHARDS_ENV_VAR: '3',
+                                         SHARD_INDEX_ENV_VAR: '1'},
+                                        [ShuffleFlag(), RandomSeedFlag(20)])
+    [tests3] = GetTestsForAllIterations({TOTAL_SHARDS_ENV_VAR: '3',
+                                         SHARD_INDEX_ENV_VAR: '2'},
+                                        [ShuffleFlag(), RandomSeedFlag(25)])
+    sorted_sharded_tests = tests1 + tests2 + tests3
+    sorted_sharded_tests.sort()
+    sorted_active_tests = []
+    sorted_active_tests.extend(ACTIVE_TESTS)
+    sorted_active_tests.sort()
+    self.assertEqual(sorted_active_tests, sorted_sharded_tests)
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-shuffle-test_.cc b/build/_deps/googletest-src/googletest/test/googletest-shuffle-test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c1fc106686e242d233f1090606c22a60823c2507
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-shuffle-test_.cc
@@ -0,0 +1,101 @@
+// Copyright 2009, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Verifies that test shuffling works.
+
+#include "gtest/gtest.h"
+
+namespace {
+
+using ::testing::EmptyTestEventListener;
+using ::testing::InitGoogleTest;
+using ::testing::Message;
+using ::testing::Test;
+using ::testing::TestEventListeners;
+using ::testing::TestInfo;
+using ::testing::UnitTest;
+
+// The test methods are empty, as the sole purpose of this program is
+// to print the test names before/after shuffling.
+
+class A : public Test {};
+TEST_F(A, A) {}
+TEST_F(A, B) {}
+
+TEST(ADeathTest, A) {}
+TEST(ADeathTest, B) {}
+TEST(ADeathTest, C) {}
+
+TEST(B, A) {}
+TEST(B, B) {}
+TEST(B, C) {}
+TEST(B, DISABLED_D) {}
+TEST(B, DISABLED_E) {}
+
+TEST(BDeathTest, A) {}
+TEST(BDeathTest, B) {}
+
+TEST(C, A) {}
+TEST(C, B) {}
+TEST(C, C) {}
+TEST(C, DISABLED_D) {}
+
+TEST(CDeathTest, A) {}
+
+TEST(DISABLED_D, A) {}
+TEST(DISABLED_D, DISABLED_B) {}
+
+// This printer prints the full test names only, starting each test
+// iteration with a "----" marker.
+class TestNamePrinter : public EmptyTestEventListener {
+ public:
+  void OnTestIterationStart(const UnitTest& /* unit_test */,
+                            int /* iteration */) override {
+    printf("----\n");
+  }
+
+  void OnTestStart(const TestInfo& test_info) override {
+    printf("%s.%s\n", test_info.test_case_name(), test_info.name());
+  }
+};
+
+}  // namespace
+
+int main(int argc, char **argv) {
+  InitGoogleTest(&argc, argv);
+
+  // Replaces the default printer with TestNamePrinter, which prints
+  // the test name only.
+  TestEventListeners& listeners = UnitTest::GetInstance()->listeners();
+  delete listeners.Release(listeners.default_result_printer());
+  listeners.Append(new TestNamePrinter);
+
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googletest/test/googletest-test-part-test.cc b/build/_deps/googletest-src/googletest/test/googletest-test-part-test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..44cf7ca044b850dadc0df89628225c07dea27c91
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-test-part-test.cc
@@ -0,0 +1,230 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "gtest/gtest-test-part.h"
+
+#include "gtest/gtest.h"
+
+using testing::Message;
+using testing::Test;
+using testing::TestPartResult;
+using testing::TestPartResultArray;
+
+namespace {
+
+// Tests the TestPartResult class.
+
+// The test fixture for testing TestPartResult.
+class TestPartResultTest : public Test {
+ protected:
+  TestPartResultTest()
+      : r1_(TestPartResult::kSuccess, "foo/bar.cc", 10, "Success!"),
+        r2_(TestPartResult::kNonFatalFailure, "foo/bar.cc", -1, "Failure!"),
+        r3_(TestPartResult::kFatalFailure, nullptr, -1, "Failure!"),
+        r4_(TestPartResult::kSkip, "foo/bar.cc", 2, "Skipped!") {}
+
+  TestPartResult r1_, r2_, r3_, r4_;
+};
+
+
+TEST_F(TestPartResultTest, ConstructorWorks) {
+  Message message;
+  message << "something is terribly wrong";
+  message << static_cast<const char*>(testing::internal::kStackTraceMarker);
+  message << "some unimportant stack trace";
+
+  const TestPartResult result(TestPartResult::kNonFatalFailure,
+                              "some_file.cc",
+                              42,
+                              message.GetString().c_str());
+
+  EXPECT_EQ(TestPartResult::kNonFatalFailure, result.type());
+  EXPECT_STREQ("some_file.cc", result.file_name());
+  EXPECT_EQ(42, result.line_number());
+  EXPECT_STREQ(message.GetString().c_str(), result.message());
+  EXPECT_STREQ("something is terribly wrong", result.summary());
+}
+
+TEST_F(TestPartResultTest, ResultAccessorsWork) {
+  const TestPartResult success(TestPartResult::kSuccess,
+                               "file.cc",
+                               42,
+                               "message");
+  EXPECT_TRUE(success.passed());
+  EXPECT_FALSE(success.failed());
+  EXPECT_FALSE(success.nonfatally_failed());
+  EXPECT_FALSE(success.fatally_failed());
+  EXPECT_FALSE(success.skipped());
+
+  const TestPartResult nonfatal_failure(TestPartResult::kNonFatalFailure,
+                                        "file.cc",
+                                        42,
+                                        "message");
+  EXPECT_FALSE(nonfatal_failure.passed());
+  EXPECT_TRUE(nonfatal_failure.failed());
+  EXPECT_TRUE(nonfatal_failure.nonfatally_failed());
+  EXPECT_FALSE(nonfatal_failure.fatally_failed());
+  EXPECT_FALSE(nonfatal_failure.skipped());
+
+  const TestPartResult fatal_failure(TestPartResult::kFatalFailure,
+                                     "file.cc",
+                                     42,
+                                     "message");
+  EXPECT_FALSE(fatal_failure.passed());
+  EXPECT_TRUE(fatal_failure.failed());
+  EXPECT_FALSE(fatal_failure.nonfatally_failed());
+  EXPECT_TRUE(fatal_failure.fatally_failed());
+  EXPECT_FALSE(fatal_failure.skipped());
+
+  const TestPartResult skip(TestPartResult::kSkip, "file.cc", 42, "message");
+  EXPECT_FALSE(skip.passed());
+  EXPECT_FALSE(skip.failed());
+  EXPECT_FALSE(skip.nonfatally_failed());
+  EXPECT_FALSE(skip.fatally_failed());
+  EXPECT_TRUE(skip.skipped());
+}
+
+// Tests TestPartResult::type().
+TEST_F(TestPartResultTest, type) {
+  EXPECT_EQ(TestPartResult::kSuccess, r1_.type());
+  EXPECT_EQ(TestPartResult::kNonFatalFailure, r2_.type());
+  EXPECT_EQ(TestPartResult::kFatalFailure, r3_.type());
+  EXPECT_EQ(TestPartResult::kSkip, r4_.type());
+}
+
+// Tests TestPartResult::file_name().
+TEST_F(TestPartResultTest, file_name) {
+  EXPECT_STREQ("foo/bar.cc", r1_.file_name());
+  EXPECT_STREQ(nullptr, r3_.file_name());
+  EXPECT_STREQ("foo/bar.cc", r4_.file_name());
+}
+
+// Tests TestPartResult::line_number().
+TEST_F(TestPartResultTest, line_number) {
+  EXPECT_EQ(10, r1_.line_number());
+  EXPECT_EQ(-1, r2_.line_number());
+  EXPECT_EQ(2, r4_.line_number());
+}
+
+// Tests TestPartResult::message().
+TEST_F(TestPartResultTest, message) {
+  EXPECT_STREQ("Success!", r1_.message());
+  EXPECT_STREQ("Skipped!", r4_.message());
+}
+
+// Tests TestPartResult::passed().
+TEST_F(TestPartResultTest, Passed) {
+  EXPECT_TRUE(r1_.passed());
+  EXPECT_FALSE(r2_.passed());
+  EXPECT_FALSE(r3_.passed());
+  EXPECT_FALSE(r4_.passed());
+}
+
+// Tests TestPartResult::failed().
+TEST_F(TestPartResultTest, Failed) {
+  EXPECT_FALSE(r1_.failed());
+  EXPECT_TRUE(r2_.failed());
+  EXPECT_TRUE(r3_.failed());
+  EXPECT_FALSE(r4_.failed());
+}
+
+// Tests TestPartResult::failed().
+TEST_F(TestPartResultTest, Skipped) {
+  EXPECT_FALSE(r1_.skipped());
+  EXPECT_FALSE(r2_.skipped());
+  EXPECT_FALSE(r3_.skipped());
+  EXPECT_TRUE(r4_.skipped());
+}
+
+// Tests TestPartResult::fatally_failed().
+TEST_F(TestPartResultTest, FatallyFailed) {
+  EXPECT_FALSE(r1_.fatally_failed());
+  EXPECT_FALSE(r2_.fatally_failed());
+  EXPECT_TRUE(r3_.fatally_failed());
+  EXPECT_FALSE(r4_.fatally_failed());
+}
+
+// Tests TestPartResult::nonfatally_failed().
+TEST_F(TestPartResultTest, NonfatallyFailed) {
+  EXPECT_FALSE(r1_.nonfatally_failed());
+  EXPECT_TRUE(r2_.nonfatally_failed());
+  EXPECT_FALSE(r3_.nonfatally_failed());
+  EXPECT_FALSE(r4_.nonfatally_failed());
+}
+
+// Tests the TestPartResultArray class.
+
+class TestPartResultArrayTest : public Test {
+ protected:
+  TestPartResultArrayTest()
+      : r1_(TestPartResult::kNonFatalFailure, "foo/bar.cc", -1, "Failure 1"),
+        r2_(TestPartResult::kFatalFailure, "foo/bar.cc", -1, "Failure 2") {}
+
+  const TestPartResult r1_, r2_;
+};
+
+// Tests that TestPartResultArray initially has size 0.
+TEST_F(TestPartResultArrayTest, InitialSizeIsZero) {
+  TestPartResultArray results;
+  EXPECT_EQ(0, results.size());
+}
+
+// Tests that TestPartResultArray contains the given TestPartResult
+// after one Append() operation.
+TEST_F(TestPartResultArrayTest, ContainsGivenResultAfterAppend) {
+  TestPartResultArray results;
+  results.Append(r1_);
+  EXPECT_EQ(1, results.size());
+  EXPECT_STREQ("Failure 1", results.GetTestPartResult(0).message());
+}
+
+// Tests that TestPartResultArray contains the given TestPartResults
+// after two Append() operations.
+TEST_F(TestPartResultArrayTest, ContainsGivenResultsAfterTwoAppends) {
+  TestPartResultArray results;
+  results.Append(r1_);
+  results.Append(r2_);
+  EXPECT_EQ(2, results.size());
+  EXPECT_STREQ("Failure 1", results.GetTestPartResult(0).message());
+  EXPECT_STREQ("Failure 2", results.GetTestPartResult(1).message());
+}
+
+typedef TestPartResultArrayTest TestPartResultArrayDeathTest;
+
+// Tests that the program dies when GetTestPartResult() is called with
+// an invalid index.
+TEST_F(TestPartResultArrayDeathTest, DiesWhenIndexIsOutOfBound) {
+  TestPartResultArray results;
+  results.Append(r1_);
+
+  EXPECT_DEATH_IF_SUPPORTED(results.GetTestPartResult(-1), "");
+  EXPECT_DEATH_IF_SUPPORTED(results.GetTestPartResult(1), "");
+}
+
+}  // namespace
diff --git a/build/_deps/googletest-src/googletest/test/googletest-test2_test.cc b/build/_deps/googletest-src/googletest/test/googletest-test2_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2e425daebab637aaaf0ca8a374fab0d6149ab2ce
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-test2_test.cc
@@ -0,0 +1,61 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Tests for Google Test itself.  This verifies that the basic constructs of
+// Google Test work.
+
+#include "gtest/gtest.h"
+#include "googletest-param-test-test.h"
+
+using ::testing::Values;
+using ::testing::internal::ParamGenerator;
+
+// Tests that generators defined in a different translation unit
+// are functional. The test using extern_gen_2 is defined
+// in googletest-param-test-test.cc.
+ParamGenerator<int> extern_gen_2 = Values(33);
+
+// Tests that a parameterized test case can be defined in one translation unit
+// and instantiated in another. The test is defined in
+// googletest-param-test-test.cc and ExternalInstantiationTest fixture class is
+// defined in gtest-param-test_test.h.
+INSTANTIATE_TEST_SUITE_P(MultiplesOf33,
+                         ExternalInstantiationTest,
+                         Values(33, 66));
+
+// Tests that a parameterized test case can be instantiated
+// in multiple translation units. Another instantiation is defined
+// in googletest-param-test-test.cc and
+// InstantiationInMultipleTranslationUnitsTest fixture is defined in
+// gtest-param-test_test.h
+INSTANTIATE_TEST_SUITE_P(Sequence2,
+                         InstantiationInMultipleTranslationUnitsTest,
+                         Values(42*3, 42*4, 42*5));
+
diff --git a/build/_deps/googletest-src/googletest/test/googletest-throw-on-failure-test.py b/build/_deps/googletest-src/googletest/test/googletest-throw-on-failure-test.py
new file mode 100755
index 0000000000000000000000000000000000000000..ea627c479d5b19824ca67b98089cf400c33c279a
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-throw-on-failure-test.py
@@ -0,0 +1,168 @@
+#!/usr/bin/env python
+#
+# Copyright 2009, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Tests Google Test's throw-on-failure mode with exceptions disabled.
+
+This script invokes googletest-throw-on-failure-test_ (a program written with
+Google Test) with different environments and command line flags.
+"""
+
+import os
+import gtest_test_utils
+
+
+# Constants.
+
+# The command line flag for enabling/disabling the throw-on-failure mode.
+THROW_ON_FAILURE = 'gtest_throw_on_failure'
+
+# Path to the googletest-throw-on-failure-test_ program, compiled with
+# exceptions disabled.
+EXE_PATH = gtest_test_utils.GetTestExecutablePath(
+    'googletest-throw-on-failure-test_')
+
+
+# Utilities.
+
+
+def SetEnvVar(env_var, value):
+  """Sets an environment variable to a given value; unsets it when the
+  given value is None.
+  """
+
+  env_var = env_var.upper()
+  if value is not None:
+    os.environ[env_var] = value
+  elif env_var in os.environ:
+    del os.environ[env_var]
+
+
+def Run(command):
+  """Runs a command; returns True/False if its exit code is/isn't 0."""
+
+  print('Running "%s". . .' % ' '.join(command))
+  p = gtest_test_utils.Subprocess(command)
+  return p.exited and p.exit_code == 0
+
+
+# The tests.
+class ThrowOnFailureTest(gtest_test_utils.TestCase):
+  """Tests the throw-on-failure mode."""
+
+  def RunAndVerify(self, env_var_value, flag_value, should_fail):
+    """Runs googletest-throw-on-failure-test_ and verifies that it does
+    (or does not) exit with a non-zero code.
+
+    Args:
+      env_var_value:    value of the GTEST_BREAK_ON_FAILURE environment
+                        variable; None if the variable should be unset.
+      flag_value:       value of the --gtest_break_on_failure flag;
+                        None if the flag should not be present.
+      should_fail:      True if and only if the program is expected to fail.
+    """
+
+    SetEnvVar(THROW_ON_FAILURE, env_var_value)
+
+    if env_var_value is None:
+      env_var_value_msg = ' is not set'
+    else:
+      env_var_value_msg = '=' + env_var_value
+
+    if flag_value is None:
+      flag = ''
+    elif flag_value == '0':
+      flag = '--%s=0' % THROW_ON_FAILURE
+    else:
+      flag = '--%s' % THROW_ON_FAILURE
+
+    command = [EXE_PATH]
+    if flag:
+      command.append(flag)
+
+    if should_fail:
+      should_or_not = 'should'
+    else:
+      should_or_not = 'should not'
+
+    failed = not Run(command)
+
+    SetEnvVar(THROW_ON_FAILURE, None)
+
+    msg = ('when %s%s, an assertion failure in "%s" %s cause a non-zero '
+           'exit code.' %
+           (THROW_ON_FAILURE, env_var_value_msg, ' '.join(command),
+            should_or_not))
+    self.assert_(failed == should_fail, msg)
+
+  def testDefaultBehavior(self):
+    """Tests the behavior of the default mode."""
+
+    self.RunAndVerify(env_var_value=None, flag_value=None, should_fail=False)
+
+  def testThrowOnFailureEnvVar(self):
+    """Tests using the GTEST_THROW_ON_FAILURE environment variable."""
+
+    self.RunAndVerify(env_var_value='0',
+                      flag_value=None,
+                      should_fail=False)
+    self.RunAndVerify(env_var_value='1',
+                      flag_value=None,
+                      should_fail=True)
+
+  def testThrowOnFailureFlag(self):
+    """Tests using the --gtest_throw_on_failure flag."""
+
+    self.RunAndVerify(env_var_value=None,
+                      flag_value='0',
+                      should_fail=False)
+    self.RunAndVerify(env_var_value=None,
+                      flag_value='1',
+                      should_fail=True)
+
+  def testThrowOnFailureFlagOverridesEnvVar(self):
+    """Tests that --gtest_throw_on_failure overrides GTEST_THROW_ON_FAILURE."""
+
+    self.RunAndVerify(env_var_value='0',
+                      flag_value='0',
+                      should_fail=False)
+    self.RunAndVerify(env_var_value='0',
+                      flag_value='1',
+                      should_fail=True)
+    self.RunAndVerify(env_var_value='1',
+                      flag_value='0',
+                      should_fail=False)
+    self.RunAndVerify(env_var_value='1',
+                      flag_value='1',
+                      should_fail=True)
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-throw-on-failure-test_.cc b/build/_deps/googletest-src/googletest/test/googletest-throw-on-failure-test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..83bb914c7e474a812d5745a3ec50b95b38a658e4
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-throw-on-failure-test_.cc
@@ -0,0 +1,71 @@
+// Copyright 2009, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Tests Google Test's throw-on-failure mode with exceptions disabled.
+//
+// This program must be compiled with exceptions disabled.  It will be
+// invoked by googletest-throw-on-failure-test.py, and is expected to exit
+// with non-zero in the throw-on-failure mode or 0 otherwise.
+
+#include "gtest/gtest.h"
+
+#include <stdio.h>                      // for fflush, fprintf, NULL, etc.
+#include <stdlib.h>                     // for exit
+#include <exception>                    // for set_terminate
+
+// This terminate handler aborts the program using exit() rather than abort().
+// This avoids showing pop-ups on Windows systems and core dumps on Unix-like
+// ones.
+void TerminateHandler() {
+  fprintf(stderr, "%s\n", "Unhandled C++ exception terminating the program.");
+  fflush(nullptr);
+  exit(1);
+}
+
+int main(int argc, char** argv) {
+#if GTEST_HAS_EXCEPTIONS
+  std::set_terminate(&TerminateHandler);
+#endif
+  testing::InitGoogleTest(&argc, argv);
+
+  // We want to ensure that people can use Google Test assertions in
+  // other testing frameworks, as long as they initialize Google Test
+  // properly and set the throw-on-failure mode.  Therefore, we don't
+  // use Google Test's constructs for defining and running tests
+  // (e.g. TEST and RUN_ALL_TESTS) here.
+
+  // In the throw-on-failure mode with exceptions disabled, this
+  // assertion will cause the program to exit with a non-zero code.
+  EXPECT_EQ(2, 3);
+
+  // When not in the throw-on-failure mode, the control will reach
+  // here.
+  return 0;
+}
diff --git a/build/_deps/googletest-src/googletest/test/googletest-uninitialized-test.py b/build/_deps/googletest-src/googletest/test/googletest-uninitialized-test.py
new file mode 100755
index 0000000000000000000000000000000000000000..69595a0ddede807ae3711e9ef5f7b0ae92207563
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-uninitialized-test.py
@@ -0,0 +1,67 @@
+#!/usr/bin/env python
+#
+# Copyright 2008, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Verifies that Google Test warns the user when not initialized properly."""
+
+import gtest_test_utils
+
+COMMAND = gtest_test_utils.GetTestExecutablePath('googletest-uninitialized-test_')
+
+
+def Assert(condition):
+  if not condition:
+    raise AssertionError
+
+
+def AssertEq(expected, actual):
+  if expected != actual:
+    print('Expected: %s' % (expected,))
+    print('  Actual: %s' % (actual,))
+    raise AssertionError
+
+
+def TestExitCodeAndOutput(command):
+  """Runs the given command and verifies its exit code and output."""
+
+  # Verifies that 'command' exits with code 1.
+  p = gtest_test_utils.Subprocess(command)
+  if p.exited and p.exit_code == 0:
+    Assert('IMPORTANT NOTICE' in p.output);
+  Assert('InitGoogleTest' in p.output)
+
+
+class GTestUninitializedTest(gtest_test_utils.TestCase):
+  def testExitCodeAndOutput(self):
+    TestExitCodeAndOutput(COMMAND)
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/googletest-uninitialized-test_.cc b/build/_deps/googletest-src/googletest/test/googletest-uninitialized-test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b4434d51eebfd8726bd3f04c2d0426bba960298c
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/googletest-uninitialized-test_.cc
@@ -0,0 +1,42 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include "gtest/gtest.h"
+
+TEST(DummyTest, Dummy) {
+  // This test doesn't verify anything.  We just need it to create a
+  // realistic stage for testing the behavior of Google Test when
+  // RUN_ALL_TESTS() is called without
+  // testing::InitGoogleTest() being called first.
+}
+
+int main() {
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest-typed-test2_test.cc b/build/_deps/googletest-src/googletest/test/gtest-typed-test2_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..70001604ca06f1361cb6287da1d61067b3b42d76
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest-typed-test2_test.cc
@@ -0,0 +1,44 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include <vector>
+
+#include "test/gtest-typed-test_test.h"
+#include "gtest/gtest.h"
+
+#if GTEST_HAS_TYPED_TEST_P
+
+// Tests that the same type-parameterized test case can be
+// instantiated in different translation units linked together.
+// (ContainerTest is also instantiated in gtest-typed-test_test.cc.)
+INSTANTIATE_TYPED_TEST_SUITE_P(Vector, ContainerTest,
+                               testing::Types<std::vector<int> >);
+
+#endif  // GTEST_HAS_TYPED_TEST_P
diff --git a/build/_deps/googletest-src/googletest/test/gtest-typed-test_test.cc b/build/_deps/googletest-src/googletest/test/gtest-typed-test_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..5411832ab2696d827abf2fe9c1416b97458e5c36
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest-typed-test_test.cc
@@ -0,0 +1,462 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include "test/gtest-typed-test_test.h"
+
+#include <set>
+#include <type_traits>
+#include <vector>
+
+#include "gtest/gtest.h"
+
+#if _MSC_VER
+GTEST_DISABLE_MSC_WARNINGS_PUSH_(4127 /* conditional expression is constant */)
+#endif  //  _MSC_VER
+
+using testing::Test;
+
+// Used for testing that SetUpTestSuite()/TearDownTestSuite(), fixture
+// ctor/dtor, and SetUp()/TearDown() work correctly in typed tests and
+// type-parameterized test.
+template <typename T>
+class CommonTest : public Test {
+  // For some technical reason, SetUpTestSuite() and TearDownTestSuite()
+  // must be public.
+ public:
+  static void SetUpTestSuite() {
+    shared_ = new T(5);
+  }
+
+  static void TearDownTestSuite() {
+    delete shared_;
+    shared_ = nullptr;
+  }
+
+  // This 'protected:' is optional.  There's no harm in making all
+  // members of this fixture class template public.
+ protected:
+  // We used to use std::list here, but switched to std::vector since
+  // MSVC's <list> doesn't compile cleanly with /W4.
+  typedef std::vector<T> Vector;
+  typedef std::set<int> IntSet;
+
+  CommonTest() : value_(1) {}
+
+  ~CommonTest() override { EXPECT_EQ(3, value_); }
+
+  void SetUp() override {
+    EXPECT_EQ(1, value_);
+    value_++;
+  }
+
+  void TearDown() override {
+    EXPECT_EQ(2, value_);
+    value_++;
+  }
+
+  T value_;
+  static T* shared_;
+};
+
+template <typename T>
+T* CommonTest<T>::shared_ = nullptr;
+
+// This #ifdef block tests typed tests.
+#if GTEST_HAS_TYPED_TEST
+
+using testing::Types;
+
+// Tests that SetUpTestSuite()/TearDownTestSuite(), fixture ctor/dtor,
+// and SetUp()/TearDown() work correctly in typed tests
+
+typedef Types<char, int> TwoTypes;
+TYPED_TEST_SUITE(CommonTest, TwoTypes);
+
+TYPED_TEST(CommonTest, ValuesAreCorrect) {
+  // Static members of the fixture class template can be visited via
+  // the TestFixture:: prefix.
+  EXPECT_EQ(5, *TestFixture::shared_);
+
+  // Typedefs in the fixture class template can be visited via the
+  // "typename TestFixture::" prefix.
+  typename TestFixture::Vector empty;
+  EXPECT_EQ(0U, empty.size());
+
+  typename TestFixture::IntSet empty2;
+  EXPECT_EQ(0U, empty2.size());
+
+  // Non-static members of the fixture class must be visited via
+  // 'this', as required by C++ for class templates.
+  EXPECT_EQ(2, this->value_);
+}
+
+// The second test makes sure shared_ is not deleted after the first
+// test.
+TYPED_TEST(CommonTest, ValuesAreStillCorrect) {
+  // Static members of the fixture class template can also be visited
+  // via 'this'.
+  ASSERT_TRUE(this->shared_ != nullptr);
+  EXPECT_EQ(5, *this->shared_);
+
+  // TypeParam can be used to refer to the type parameter.
+  EXPECT_EQ(static_cast<TypeParam>(2), this->value_);
+}
+
+// Tests that multiple TYPED_TEST_SUITE's can be defined in the same
+// translation unit.
+
+template <typename T>
+class TypedTest1 : public Test {
+};
+
+// Verifies that the second argument of TYPED_TEST_SUITE can be a
+// single type.
+TYPED_TEST_SUITE(TypedTest1, int);
+TYPED_TEST(TypedTest1, A) {}
+
+template <typename T>
+class TypedTest2 : public Test {
+};
+
+// Verifies that the second argument of TYPED_TEST_SUITE can be a
+// Types<...> type list.
+TYPED_TEST_SUITE(TypedTest2, Types<int>);
+
+// This also verifies that tests from different typed test cases can
+// share the same name.
+TYPED_TEST(TypedTest2, A) {}
+
+// Tests that a typed test case can be defined in a namespace.
+
+namespace library1 {
+
+template <typename T>
+class NumericTest : public Test {
+};
+
+typedef Types<int, long> NumericTypes;
+TYPED_TEST_SUITE(NumericTest, NumericTypes);
+
+TYPED_TEST(NumericTest, DefaultIsZero) {
+  EXPECT_EQ(0, TypeParam());
+}
+
+}  // namespace library1
+
+// Tests that custom names work.
+template <typename T>
+class TypedTestWithNames : public Test {};
+
+class TypedTestNames {
+ public:
+  template <typename T>
+  static std::string GetName(int i) {
+    if (std::is_same<T, char>::value) {
+      return std::string("char") + ::testing::PrintToString(i);
+    }
+    if (std::is_same<T, int>::value) {
+      return std::string("int") + ::testing::PrintToString(i);
+    }
+  }
+};
+
+TYPED_TEST_SUITE(TypedTestWithNames, TwoTypes, TypedTestNames);
+
+TYPED_TEST(TypedTestWithNames, TestSuiteName) {
+  if (std::is_same<TypeParam, char>::value) {
+    EXPECT_STREQ(::testing::UnitTest::GetInstance()
+                     ->current_test_info()
+                     ->test_case_name(),
+                 "TypedTestWithNames/char0");
+  }
+  if (std::is_same<TypeParam, int>::value) {
+    EXPECT_STREQ(::testing::UnitTest::GetInstance()
+                     ->current_test_info()
+                     ->test_case_name(),
+                 "TypedTestWithNames/int1");
+  }
+}
+
+#endif  // GTEST_HAS_TYPED_TEST
+
+// This #ifdef block tests type-parameterized tests.
+#if GTEST_HAS_TYPED_TEST_P
+
+using testing::Types;
+using testing::internal::TypedTestSuitePState;
+
+// Tests TypedTestSuitePState.
+
+class TypedTestSuitePStateTest : public Test {
+ protected:
+  void SetUp() override {
+    state_.AddTestName("foo.cc", 0, "FooTest", "A");
+    state_.AddTestName("foo.cc", 0, "FooTest", "B");
+    state_.AddTestName("foo.cc", 0, "FooTest", "C");
+  }
+
+  TypedTestSuitePState state_;
+};
+
+TEST_F(TypedTestSuitePStateTest, SucceedsForMatchingList) {
+  const char* tests = "A, B, C";
+  EXPECT_EQ(tests,
+            state_.VerifyRegisteredTestNames("foo.cc", 1, tests));
+}
+
+// Makes sure that the order of the tests and spaces around the names
+// don't matter.
+TEST_F(TypedTestSuitePStateTest, IgnoresOrderAndSpaces) {
+  const char* tests = "A,C,   B";
+  EXPECT_EQ(tests,
+            state_.VerifyRegisteredTestNames("foo.cc", 1, tests));
+}
+
+using TypedTestSuitePStateDeathTest = TypedTestSuitePStateTest;
+
+TEST_F(TypedTestSuitePStateDeathTest, DetectsDuplicates) {
+  EXPECT_DEATH_IF_SUPPORTED(
+      state_.VerifyRegisteredTestNames("foo.cc", 1, "A, B, A, C"),
+      "foo\\.cc.1.?: Test A is listed more than once\\.");
+}
+
+TEST_F(TypedTestSuitePStateDeathTest, DetectsExtraTest) {
+  EXPECT_DEATH_IF_SUPPORTED(
+      state_.VerifyRegisteredTestNames("foo.cc", 1, "A, B, C, D"),
+      "foo\\.cc.1.?: No test named D can be found in this test suite\\.");
+}
+
+TEST_F(TypedTestSuitePStateDeathTest, DetectsMissedTest) {
+  EXPECT_DEATH_IF_SUPPORTED(
+      state_.VerifyRegisteredTestNames("foo.cc", 1, "A, C"),
+      "foo\\.cc.1.?: You forgot to list test B\\.");
+}
+
+// Tests that defining a test for a parameterized test case generates
+// a run-time error if the test case has been registered.
+TEST_F(TypedTestSuitePStateDeathTest, DetectsTestAfterRegistration) {
+  state_.VerifyRegisteredTestNames("foo.cc", 1, "A, B, C");
+  EXPECT_DEATH_IF_SUPPORTED(
+      state_.AddTestName("foo.cc", 2, "FooTest", "D"),
+      "foo\\.cc.2.?: Test D must be defined before REGISTER_TYPED_TEST_SUITE_P"
+      "\\(FooTest, \\.\\.\\.\\)\\.");
+}
+
+// Tests that SetUpTestSuite()/TearDownTestSuite(), fixture ctor/dtor,
+// and SetUp()/TearDown() work correctly in type-parameterized tests.
+
+template <typename T>
+class DerivedTest : public CommonTest<T> {
+};
+
+TYPED_TEST_SUITE_P(DerivedTest);
+
+TYPED_TEST_P(DerivedTest, ValuesAreCorrect) {
+  // Static members of the fixture class template can be visited via
+  // the TestFixture:: prefix.
+  EXPECT_EQ(5, *TestFixture::shared_);
+
+  // Non-static members of the fixture class must be visited via
+  // 'this', as required by C++ for class templates.
+  EXPECT_EQ(2, this->value_);
+}
+
+// The second test makes sure shared_ is not deleted after the first
+// test.
+TYPED_TEST_P(DerivedTest, ValuesAreStillCorrect) {
+  // Static members of the fixture class template can also be visited
+  // via 'this'.
+  ASSERT_TRUE(this->shared_ != nullptr);
+  EXPECT_EQ(5, *this->shared_);
+  EXPECT_EQ(2, this->value_);
+}
+
+REGISTER_TYPED_TEST_SUITE_P(DerivedTest,
+                           ValuesAreCorrect, ValuesAreStillCorrect);
+
+typedef Types<short, long> MyTwoTypes;
+INSTANTIATE_TYPED_TEST_SUITE_P(My, DerivedTest, MyTwoTypes);
+
+// Tests that custom names work with type parametrized tests. We reuse the
+// TwoTypes from above here.
+template <typename T>
+class TypeParametrizedTestWithNames : public Test {};
+
+TYPED_TEST_SUITE_P(TypeParametrizedTestWithNames);
+
+TYPED_TEST_P(TypeParametrizedTestWithNames, TestSuiteName) {
+  if (std::is_same<TypeParam, char>::value) {
+    EXPECT_STREQ(::testing::UnitTest::GetInstance()
+                     ->current_test_info()
+                     ->test_case_name(),
+                 "CustomName/TypeParametrizedTestWithNames/parChar0");
+  }
+  if (std::is_same<TypeParam, int>::value) {
+    EXPECT_STREQ(::testing::UnitTest::GetInstance()
+                     ->current_test_info()
+                     ->test_case_name(),
+                 "CustomName/TypeParametrizedTestWithNames/parInt1");
+  }
+}
+
+REGISTER_TYPED_TEST_SUITE_P(TypeParametrizedTestWithNames, TestSuiteName);
+
+class TypeParametrizedTestNames {
+ public:
+  template <typename T>
+  static std::string GetName(int i) {
+    if (std::is_same<T, char>::value) {
+      return std::string("parChar") + ::testing::PrintToString(i);
+    }
+    if (std::is_same<T, int>::value) {
+      return std::string("parInt") + ::testing::PrintToString(i);
+    }
+  }
+};
+
+INSTANTIATE_TYPED_TEST_SUITE_P(CustomName, TypeParametrizedTestWithNames,
+                              TwoTypes, TypeParametrizedTestNames);
+
+// Tests that multiple TYPED_TEST_SUITE_P's can be defined in the same
+// translation unit.
+
+template <typename T>
+class TypedTestP1 : public Test {
+};
+
+TYPED_TEST_SUITE_P(TypedTestP1);
+
+// For testing that the code between TYPED_TEST_SUITE_P() and
+// TYPED_TEST_P() is not enclosed in a namespace.
+using IntAfterTypedTestSuiteP = int;
+
+TYPED_TEST_P(TypedTestP1, A) {}
+TYPED_TEST_P(TypedTestP1, B) {}
+
+// For testing that the code between TYPED_TEST_P() and
+// REGISTER_TYPED_TEST_SUITE_P() is not enclosed in a namespace.
+using IntBeforeRegisterTypedTestSuiteP = int;
+
+REGISTER_TYPED_TEST_SUITE_P(TypedTestP1, A, B);
+
+template <typename T>
+class TypedTestP2 : public Test {
+};
+
+TYPED_TEST_SUITE_P(TypedTestP2);
+
+// This also verifies that tests from different type-parameterized
+// test cases can share the same name.
+TYPED_TEST_P(TypedTestP2, A) {}
+
+REGISTER_TYPED_TEST_SUITE_P(TypedTestP2, A);
+
+// Verifies that the code between TYPED_TEST_SUITE_P() and
+// REGISTER_TYPED_TEST_SUITE_P() is not enclosed in a namespace.
+IntAfterTypedTestSuiteP after = 0;
+IntBeforeRegisterTypedTestSuiteP before = 0;
+
+// Verifies that the last argument of INSTANTIATE_TYPED_TEST_SUITE_P()
+// can be either a single type or a Types<...> type list.
+INSTANTIATE_TYPED_TEST_SUITE_P(Int, TypedTestP1, int);
+INSTANTIATE_TYPED_TEST_SUITE_P(Int, TypedTestP2, Types<int>);
+
+// Tests that the same type-parameterized test case can be
+// instantiated more than once in the same translation unit.
+INSTANTIATE_TYPED_TEST_SUITE_P(Double, TypedTestP2, Types<double>);
+
+// Tests that the same type-parameterized test case can be
+// instantiated in different translation units linked together.
+// (ContainerTest is also instantiated in gtest-typed-test_test.cc.)
+typedef Types<std::vector<double>, std::set<char> > MyContainers;
+INSTANTIATE_TYPED_TEST_SUITE_P(My, ContainerTest, MyContainers);
+
+// Tests that a type-parameterized test case can be defined and
+// instantiated in a namespace.
+
+namespace library2 {
+
+template <typename T>
+class NumericTest : public Test {
+};
+
+TYPED_TEST_SUITE_P(NumericTest);
+
+TYPED_TEST_P(NumericTest, DefaultIsZero) {
+  EXPECT_EQ(0, TypeParam());
+}
+
+TYPED_TEST_P(NumericTest, ZeroIsLessThanOne) {
+  EXPECT_LT(TypeParam(0), TypeParam(1));
+}
+
+REGISTER_TYPED_TEST_SUITE_P(NumericTest,
+                           DefaultIsZero, ZeroIsLessThanOne);
+typedef Types<int, double> NumericTypes;
+INSTANTIATE_TYPED_TEST_SUITE_P(My, NumericTest, NumericTypes);
+
+static const char* GetTestName() {
+  return testing::UnitTest::GetInstance()->current_test_info()->name();
+}
+// Test the stripping of space from test names
+template <typename T> class TrimmedTest : public Test { };
+TYPED_TEST_SUITE_P(TrimmedTest);
+TYPED_TEST_P(TrimmedTest, Test1) { EXPECT_STREQ("Test1", GetTestName()); }
+TYPED_TEST_P(TrimmedTest, Test2) { EXPECT_STREQ("Test2", GetTestName()); }
+TYPED_TEST_P(TrimmedTest, Test3) { EXPECT_STREQ("Test3", GetTestName()); }
+TYPED_TEST_P(TrimmedTest, Test4) { EXPECT_STREQ("Test4", GetTestName()); }
+TYPED_TEST_P(TrimmedTest, Test5) { EXPECT_STREQ("Test5", GetTestName()); }
+REGISTER_TYPED_TEST_SUITE_P(
+    TrimmedTest,
+    Test1, Test2,Test3 , Test4 ,Test5 );  // NOLINT
+template <typename T1, typename T2> struct MyPair {};
+// Be sure to try a type with a comma in its name just in case it matters.
+typedef Types<int, double, MyPair<int, int> > TrimTypes;
+INSTANTIATE_TYPED_TEST_SUITE_P(My, TrimmedTest, TrimTypes);
+
+}  // namespace library2
+
+#endif  // GTEST_HAS_TYPED_TEST_P
+
+#if !defined(GTEST_HAS_TYPED_TEST) && !defined(GTEST_HAS_TYPED_TEST_P)
+
+// Google Test may not support type-parameterized tests with some
+// compilers. If we use conditional compilation to compile out all
+// code referring to the gtest_main library, MSVC linker will not link
+// that library at all and consequently complain about missing entry
+// point defined in that library (fatal error LNK1561: entry point
+// must be defined). This dummy test keeps gtest_main linked in.
+TEST(DummyTest, TypedTestsAreNotSupportedOnThisPlatform) {}
+
+#if _MSC_VER
+GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4127
+#endif                             //  _MSC_VER
+
+#endif  // #if !defined(GTEST_HAS_TYPED_TEST) && !defined(GTEST_HAS_TYPED_TEST_P)
diff --git a/build/_deps/googletest-src/googletest/test/gtest-typed-test_test.h b/build/_deps/googletest-src/googletest/test/gtest-typed-test_test.h
new file mode 100644
index 0000000000000000000000000000000000000000..23137b7ef79898755320c31113b51e80b9af120d
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest-typed-test_test.h
@@ -0,0 +1,65 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#ifndef GTEST_TEST_GTEST_TYPED_TEST_TEST_H_
+#define GTEST_TEST_GTEST_TYPED_TEST_TEST_H_
+
+#include "gtest/gtest.h"
+
+#if GTEST_HAS_TYPED_TEST_P
+
+using testing::Test;
+
+// For testing that the same type-parameterized test case can be
+// instantiated in different translation units linked together.
+// ContainerTest will be instantiated in both gtest-typed-test_test.cc
+// and gtest-typed-test2_test.cc.
+
+template <typename T>
+class ContainerTest : public Test {
+};
+
+TYPED_TEST_SUITE_P(ContainerTest);
+
+TYPED_TEST_P(ContainerTest, CanBeDefaultConstructed) {
+  TypeParam container;
+}
+
+TYPED_TEST_P(ContainerTest, InitialSizeIsZero) {
+  TypeParam container;
+  EXPECT_EQ(0U, container.size());
+}
+
+REGISTER_TYPED_TEST_SUITE_P(ContainerTest,
+                            CanBeDefaultConstructed, InitialSizeIsZero);
+
+#endif  // GTEST_HAS_TYPED_TEST_P
+
+#endif  // GTEST_TEST_GTEST_TYPED_TEST_TEST_H_
diff --git a/build/_deps/googletest-src/googletest/test/gtest-unittest-api_test.cc b/build/_deps/googletest-src/googletest/test/gtest-unittest-api_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..480a41fb42eeeefa8b624e4fb124d8e7f6234efb
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest-unittest-api_test.cc
@@ -0,0 +1,340 @@
+// Copyright 2009 Google Inc.  All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// The Google C++ Testing and Mocking Framework (Google Test)
+//
+// This file contains tests verifying correctness of data provided via
+// UnitTest's public methods.
+
+#include "gtest/gtest.h"
+
+#include <string.h>  // For strcmp.
+#include <algorithm>
+
+using ::testing::InitGoogleTest;
+
+namespace testing {
+namespace internal {
+
+template <typename T>
+struct LessByName {
+  bool operator()(const T* a, const T* b) {
+    return strcmp(a->name(), b->name()) < 0;
+  }
+};
+
+class UnitTestHelper {
+ public:
+  // Returns the array of pointers to all test suites sorted by the test suite
+  // name.  The caller is responsible for deleting the array.
+  static TestSuite const** GetSortedTestSuites() {
+    UnitTest& unit_test = *UnitTest::GetInstance();
+    auto const** const test_suites =
+        new const TestSuite*[unit_test.total_test_suite_count()];
+
+    for (int i = 0; i < unit_test.total_test_suite_count(); ++i)
+      test_suites[i] = unit_test.GetTestSuite(i);
+
+    std::sort(test_suites,
+              test_suites + unit_test.total_test_suite_count(),
+              LessByName<TestSuite>());
+    return test_suites;
+  }
+
+  // Returns the test suite by its name.  The caller doesn't own the returned
+  // pointer.
+  static const TestSuite* FindTestSuite(const char* name) {
+    UnitTest& unit_test = *UnitTest::GetInstance();
+    for (int i = 0; i < unit_test.total_test_suite_count(); ++i) {
+      const TestSuite* test_suite = unit_test.GetTestSuite(i);
+      if (0 == strcmp(test_suite->name(), name))
+        return test_suite;
+    }
+    return nullptr;
+  }
+
+  // Returns the array of pointers to all tests in a particular test suite
+  // sorted by the test name.  The caller is responsible for deleting the
+  // array.
+  static TestInfo const** GetSortedTests(const TestSuite* test_suite) {
+    TestInfo const** const tests =
+        new const TestInfo*[test_suite->total_test_count()];
+
+    for (int i = 0; i < test_suite->total_test_count(); ++i)
+      tests[i] = test_suite->GetTestInfo(i);
+
+    std::sort(tests, tests + test_suite->total_test_count(),
+              LessByName<TestInfo>());
+    return tests;
+  }
+};
+
+#if GTEST_HAS_TYPED_TEST
+template <typename T> class TestSuiteWithCommentTest : public Test {};
+TYPED_TEST_SUITE(TestSuiteWithCommentTest, Types<int>);
+TYPED_TEST(TestSuiteWithCommentTest, Dummy) {}
+
+const int kTypedTestSuites = 1;
+const int kTypedTests = 1;
+#else
+const int kTypedTestSuites = 0;
+const int kTypedTests = 0;
+#endif  // GTEST_HAS_TYPED_TEST
+
+// We can only test the accessors that do not change value while tests run.
+// Since tests can be run in any order, the values the accessors that track
+// test execution (such as failed_test_count) can not be predicted.
+TEST(ApiTest, UnitTestImmutableAccessorsWork) {
+  UnitTest* unit_test = UnitTest::GetInstance();
+
+  ASSERT_EQ(2 + kTypedTestSuites, unit_test->total_test_suite_count());
+  EXPECT_EQ(1 + kTypedTestSuites, unit_test->test_suite_to_run_count());
+  EXPECT_EQ(2, unit_test->disabled_test_count());
+  EXPECT_EQ(5 + kTypedTests, unit_test->total_test_count());
+  EXPECT_EQ(3 + kTypedTests, unit_test->test_to_run_count());
+
+  const TestSuite** const test_suites = UnitTestHelper::GetSortedTestSuites();
+
+  EXPECT_STREQ("ApiTest", test_suites[0]->name());
+  EXPECT_STREQ("DISABLED_Test", test_suites[1]->name());
+#if GTEST_HAS_TYPED_TEST
+  EXPECT_STREQ("TestSuiteWithCommentTest/0", test_suites[2]->name());
+#endif  // GTEST_HAS_TYPED_TEST
+
+  delete[] test_suites;
+
+  // The following lines initiate actions to verify certain methods in
+  // FinalSuccessChecker::TearDown.
+
+  // Records a test property to verify TestResult::GetTestProperty().
+  RecordProperty("key", "value");
+}
+
+AssertionResult IsNull(const char* str) {
+  if (str != nullptr) {
+    return testing::AssertionFailure() << "argument is " << str;
+  }
+  return AssertionSuccess();
+}
+
+TEST(ApiTest, TestSuiteImmutableAccessorsWork) {
+  const TestSuite* test_suite = UnitTestHelper::FindTestSuite("ApiTest");
+  ASSERT_TRUE(test_suite != nullptr);
+
+  EXPECT_STREQ("ApiTest", test_suite->name());
+  EXPECT_TRUE(IsNull(test_suite->type_param()));
+  EXPECT_TRUE(test_suite->should_run());
+  EXPECT_EQ(1, test_suite->disabled_test_count());
+  EXPECT_EQ(3, test_suite->test_to_run_count());
+  ASSERT_EQ(4, test_suite->total_test_count());
+
+  const TestInfo** tests = UnitTestHelper::GetSortedTests(test_suite);
+
+  EXPECT_STREQ("DISABLED_Dummy1", tests[0]->name());
+  EXPECT_STREQ("ApiTest", tests[0]->test_suite_name());
+  EXPECT_TRUE(IsNull(tests[0]->value_param()));
+  EXPECT_TRUE(IsNull(tests[0]->type_param()));
+  EXPECT_FALSE(tests[0]->should_run());
+
+  EXPECT_STREQ("TestSuiteDisabledAccessorsWork", tests[1]->name());
+  EXPECT_STREQ("ApiTest", tests[1]->test_suite_name());
+  EXPECT_TRUE(IsNull(tests[1]->value_param()));
+  EXPECT_TRUE(IsNull(tests[1]->type_param()));
+  EXPECT_TRUE(tests[1]->should_run());
+
+  EXPECT_STREQ("TestSuiteImmutableAccessorsWork", tests[2]->name());
+  EXPECT_STREQ("ApiTest", tests[2]->test_suite_name());
+  EXPECT_TRUE(IsNull(tests[2]->value_param()));
+  EXPECT_TRUE(IsNull(tests[2]->type_param()));
+  EXPECT_TRUE(tests[2]->should_run());
+
+  EXPECT_STREQ("UnitTestImmutableAccessorsWork", tests[3]->name());
+  EXPECT_STREQ("ApiTest", tests[3]->test_suite_name());
+  EXPECT_TRUE(IsNull(tests[3]->value_param()));
+  EXPECT_TRUE(IsNull(tests[3]->type_param()));
+  EXPECT_TRUE(tests[3]->should_run());
+
+  delete[] tests;
+  tests = nullptr;
+
+#if GTEST_HAS_TYPED_TEST
+  test_suite = UnitTestHelper::FindTestSuite("TestSuiteWithCommentTest/0");
+  ASSERT_TRUE(test_suite != nullptr);
+
+  EXPECT_STREQ("TestSuiteWithCommentTest/0", test_suite->name());
+  EXPECT_STREQ(GetTypeName<int>().c_str(), test_suite->type_param());
+  EXPECT_TRUE(test_suite->should_run());
+  EXPECT_EQ(0, test_suite->disabled_test_count());
+  EXPECT_EQ(1, test_suite->test_to_run_count());
+  ASSERT_EQ(1, test_suite->total_test_count());
+
+  tests = UnitTestHelper::GetSortedTests(test_suite);
+
+  EXPECT_STREQ("Dummy", tests[0]->name());
+  EXPECT_STREQ("TestSuiteWithCommentTest/0", tests[0]->test_suite_name());
+  EXPECT_TRUE(IsNull(tests[0]->value_param()));
+  EXPECT_STREQ(GetTypeName<int>().c_str(), tests[0]->type_param());
+  EXPECT_TRUE(tests[0]->should_run());
+
+  delete[] tests;
+#endif  // GTEST_HAS_TYPED_TEST
+}
+
+TEST(ApiTest, TestSuiteDisabledAccessorsWork) {
+  const TestSuite* test_suite = UnitTestHelper::FindTestSuite("DISABLED_Test");
+  ASSERT_TRUE(test_suite != nullptr);
+
+  EXPECT_STREQ("DISABLED_Test", test_suite->name());
+  EXPECT_TRUE(IsNull(test_suite->type_param()));
+  EXPECT_FALSE(test_suite->should_run());
+  EXPECT_EQ(1, test_suite->disabled_test_count());
+  EXPECT_EQ(0, test_suite->test_to_run_count());
+  ASSERT_EQ(1, test_suite->total_test_count());
+
+  const TestInfo* const test_info = test_suite->GetTestInfo(0);
+  EXPECT_STREQ("Dummy2", test_info->name());
+  EXPECT_STREQ("DISABLED_Test", test_info->test_suite_name());
+  EXPECT_TRUE(IsNull(test_info->value_param()));
+  EXPECT_TRUE(IsNull(test_info->type_param()));
+  EXPECT_FALSE(test_info->should_run());
+}
+
+// These two tests are here to provide support for testing
+// test_suite_to_run_count, disabled_test_count, and test_to_run_count.
+TEST(ApiTest, DISABLED_Dummy1) {}
+TEST(DISABLED_Test, Dummy2) {}
+
+class FinalSuccessChecker : public Environment {
+ protected:
+  void TearDown() override {
+    UnitTest* unit_test = UnitTest::GetInstance();
+
+    EXPECT_EQ(1 + kTypedTestSuites, unit_test->successful_test_suite_count());
+    EXPECT_EQ(3 + kTypedTests, unit_test->successful_test_count());
+    EXPECT_EQ(0, unit_test->failed_test_suite_count());
+    EXPECT_EQ(0, unit_test->failed_test_count());
+    EXPECT_TRUE(unit_test->Passed());
+    EXPECT_FALSE(unit_test->Failed());
+    ASSERT_EQ(2 + kTypedTestSuites, unit_test->total_test_suite_count());
+
+    const TestSuite** const test_suites = UnitTestHelper::GetSortedTestSuites();
+
+    EXPECT_STREQ("ApiTest", test_suites[0]->name());
+    EXPECT_TRUE(IsNull(test_suites[0]->type_param()));
+    EXPECT_TRUE(test_suites[0]->should_run());
+    EXPECT_EQ(1, test_suites[0]->disabled_test_count());
+    ASSERT_EQ(4, test_suites[0]->total_test_count());
+    EXPECT_EQ(3, test_suites[0]->successful_test_count());
+    EXPECT_EQ(0, test_suites[0]->failed_test_count());
+    EXPECT_TRUE(test_suites[0]->Passed());
+    EXPECT_FALSE(test_suites[0]->Failed());
+
+    EXPECT_STREQ("DISABLED_Test", test_suites[1]->name());
+    EXPECT_TRUE(IsNull(test_suites[1]->type_param()));
+    EXPECT_FALSE(test_suites[1]->should_run());
+    EXPECT_EQ(1, test_suites[1]->disabled_test_count());
+    ASSERT_EQ(1, test_suites[1]->total_test_count());
+    EXPECT_EQ(0, test_suites[1]->successful_test_count());
+    EXPECT_EQ(0, test_suites[1]->failed_test_count());
+
+#if GTEST_HAS_TYPED_TEST
+    EXPECT_STREQ("TestSuiteWithCommentTest/0", test_suites[2]->name());
+    EXPECT_STREQ(GetTypeName<int>().c_str(), test_suites[2]->type_param());
+    EXPECT_TRUE(test_suites[2]->should_run());
+    EXPECT_EQ(0, test_suites[2]->disabled_test_count());
+    ASSERT_EQ(1, test_suites[2]->total_test_count());
+    EXPECT_EQ(1, test_suites[2]->successful_test_count());
+    EXPECT_EQ(0, test_suites[2]->failed_test_count());
+    EXPECT_TRUE(test_suites[2]->Passed());
+    EXPECT_FALSE(test_suites[2]->Failed());
+#endif  // GTEST_HAS_TYPED_TEST
+
+    const TestSuite* test_suite = UnitTestHelper::FindTestSuite("ApiTest");
+    const TestInfo** tests = UnitTestHelper::GetSortedTests(test_suite);
+    EXPECT_STREQ("DISABLED_Dummy1", tests[0]->name());
+    EXPECT_STREQ("ApiTest", tests[0]->test_suite_name());
+    EXPECT_FALSE(tests[0]->should_run());
+
+    EXPECT_STREQ("TestSuiteDisabledAccessorsWork", tests[1]->name());
+    EXPECT_STREQ("ApiTest", tests[1]->test_suite_name());
+    EXPECT_TRUE(IsNull(tests[1]->value_param()));
+    EXPECT_TRUE(IsNull(tests[1]->type_param()));
+    EXPECT_TRUE(tests[1]->should_run());
+    EXPECT_TRUE(tests[1]->result()->Passed());
+    EXPECT_EQ(0, tests[1]->result()->test_property_count());
+
+    EXPECT_STREQ("TestSuiteImmutableAccessorsWork", tests[2]->name());
+    EXPECT_STREQ("ApiTest", tests[2]->test_suite_name());
+    EXPECT_TRUE(IsNull(tests[2]->value_param()));
+    EXPECT_TRUE(IsNull(tests[2]->type_param()));
+    EXPECT_TRUE(tests[2]->should_run());
+    EXPECT_TRUE(tests[2]->result()->Passed());
+    EXPECT_EQ(0, tests[2]->result()->test_property_count());
+
+    EXPECT_STREQ("UnitTestImmutableAccessorsWork", tests[3]->name());
+    EXPECT_STREQ("ApiTest", tests[3]->test_suite_name());
+    EXPECT_TRUE(IsNull(tests[3]->value_param()));
+    EXPECT_TRUE(IsNull(tests[3]->type_param()));
+    EXPECT_TRUE(tests[3]->should_run());
+    EXPECT_TRUE(tests[3]->result()->Passed());
+    EXPECT_EQ(1, tests[3]->result()->test_property_count());
+    const TestProperty& property = tests[3]->result()->GetTestProperty(0);
+    EXPECT_STREQ("key", property.key());
+    EXPECT_STREQ("value", property.value());
+
+    delete[] tests;
+
+#if GTEST_HAS_TYPED_TEST
+    test_suite = UnitTestHelper::FindTestSuite("TestSuiteWithCommentTest/0");
+    tests = UnitTestHelper::GetSortedTests(test_suite);
+
+    EXPECT_STREQ("Dummy", tests[0]->name());
+    EXPECT_STREQ("TestSuiteWithCommentTest/0", tests[0]->test_suite_name());
+    EXPECT_TRUE(IsNull(tests[0]->value_param()));
+    EXPECT_STREQ(GetTypeName<int>().c_str(), tests[0]->type_param());
+    EXPECT_TRUE(tests[0]->should_run());
+    EXPECT_TRUE(tests[0]->result()->Passed());
+    EXPECT_EQ(0, tests[0]->result()->test_property_count());
+
+    delete[] tests;
+#endif  // GTEST_HAS_TYPED_TEST
+    delete[] test_suites;
+  }
+};
+
+}  // namespace internal
+}  // namespace testing
+
+int main(int argc, char **argv) {
+  InitGoogleTest(&argc, argv);
+
+  AddGlobalTestEnvironment(new testing::internal::FinalSuccessChecker());
+
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_all_test.cc b/build/_deps/googletest-src/googletest/test/gtest_all_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..615b29b706516b15ffb6d1ae515ae9a56600b815
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_all_test.cc
@@ -0,0 +1,46 @@
+// Copyright 2009, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Tests for Google C++ Testing and Mocking Framework (Google Test)
+//
+// Sometimes it's desirable to build most of Google Test's own tests
+// by compiling a single file.  This file serves this purpose.
+#include "test/googletest-filepath-test.cc"
+#include "test/googletest-message-test.cc"
+#include "test/googletest-options-test.cc"
+#include "test/googletest-port-test.cc"
+#include "test/googletest-test-part-test.cc"
+#include "test/gtest-typed-test2_test.cc"
+#include "test/gtest-typed-test_test.cc"
+#include "test/gtest_pred_impl_unittest.cc"
+#include "test/gtest_prod_test.cc"
+#include "test/gtest_skip_test.cc"
+#include "test/gtest_unittest.cc"
+#include "test/production.cc"
diff --git a/build/_deps/googletest-src/googletest/test/gtest_assert_by_exception_test.cc b/build/_deps/googletest-src/googletest/test/gtest_assert_by_exception_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ada4cb30ef68c55db81356529186834e25c1ac24
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_assert_by_exception_test.cc
@@ -0,0 +1,116 @@
+// Copyright 2009, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Tests Google Test's assert-by-exception mode with exceptions enabled.
+
+#include "gtest/gtest.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdexcept>
+
+class ThrowListener : public testing::EmptyTestEventListener {
+  void OnTestPartResult(const testing::TestPartResult& result) override {
+    if (result.type() == testing::TestPartResult::kFatalFailure) {
+      throw testing::AssertionException(result);
+    }
+  }
+};
+
+// Prints the given failure message and exits the program with
+// non-zero.  We use this instead of a Google Test assertion to
+// indicate a failure, as the latter is been tested and cannot be
+// relied on.
+void Fail(const char* msg) {
+  printf("FAILURE: %s\n", msg);
+  fflush(stdout);
+  exit(1);
+}
+
+static void AssertFalse() {
+  ASSERT_EQ(2, 3) << "Expected failure";
+}
+
+// Tests that an assertion failure throws a subclass of
+// std::runtime_error.
+TEST(Test, Test) {
+  // A successful assertion shouldn't throw.
+  try {
+    EXPECT_EQ(3, 3);
+  } catch(...) {
+    Fail("A successful assertion wrongfully threw.");
+  }
+
+  // A successful assertion shouldn't throw.
+  try {
+    EXPECT_EQ(3, 4);
+  } catch(...) {
+    Fail("A failed non-fatal assertion wrongfully threw.");
+  }
+
+  // A failed assertion should throw.
+  try {
+    AssertFalse();
+  } catch(const testing::AssertionException& e) {
+    if (strstr(e.what(), "Expected failure") != nullptr) throw;
+
+    printf("%s",
+           "A failed assertion did throw an exception of the right type, "
+           "but the message is incorrect.  Instead of containing \"Expected "
+           "failure\", it is:\n");
+    Fail(e.what());
+  } catch(...) {
+    Fail("A failed assertion threw the wrong type of exception.");
+  }
+  Fail("A failed assertion should've thrown but didn't.");
+}
+
+int kTestForContinuingTest = 0;
+
+TEST(Test, Test2) {
+  kTestForContinuingTest = 1;
+}
+
+int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+  testing::UnitTest::GetInstance()->listeners().Append(new ThrowListener);
+
+  int result = RUN_ALL_TESTS();
+  if (result == 0) {
+    printf("RUN_ALL_TESTS returned %d\n", result);
+    Fail("Expected failure instead.");
+  }
+
+  if (kTestForContinuingTest == 0) {
+    Fail("Should have continued with other tests, but did not.");
+  }
+  return 0;
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_environment_test.cc b/build/_deps/googletest-src/googletest/test/gtest_environment_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..064bfc50b918451e2907bd5856673ddcd2701941
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_environment_test.cc
@@ -0,0 +1,188 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Tests using global test environments.
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "gtest/gtest.h"
+#include "src/gtest-internal-inl.h"
+
+namespace testing {
+GTEST_DECLARE_string_(filter);
+}
+
+namespace {
+
+enum FailureType {
+  NO_FAILURE, NON_FATAL_FAILURE, FATAL_FAILURE
+};
+
+// For testing using global test environments.
+class MyEnvironment : public testing::Environment {
+ public:
+  MyEnvironment() { Reset(); }
+
+  // Depending on the value of failure_in_set_up_, SetUp() will
+  // generate a non-fatal failure, generate a fatal failure, or
+  // succeed.
+  void SetUp() override {
+    set_up_was_run_ = true;
+
+    switch (failure_in_set_up_) {
+      case NON_FATAL_FAILURE:
+        ADD_FAILURE() << "Expected non-fatal failure in global set-up.";
+        break;
+      case FATAL_FAILURE:
+        FAIL() << "Expected fatal failure in global set-up.";
+        break;
+      default:
+        break;
+    }
+  }
+
+  // Generates a non-fatal failure.
+  void TearDown() override {
+    tear_down_was_run_ = true;
+    ADD_FAILURE() << "Expected non-fatal failure in global tear-down.";
+  }
+
+  // Resets the state of the environment s.t. it can be reused.
+  void Reset() {
+    failure_in_set_up_ = NO_FAILURE;
+    set_up_was_run_ = false;
+    tear_down_was_run_ = false;
+  }
+
+  // We call this function to set the type of failure SetUp() should
+  // generate.
+  void set_failure_in_set_up(FailureType type) {
+    failure_in_set_up_ = type;
+  }
+
+  // Was SetUp() run?
+  bool set_up_was_run() const { return set_up_was_run_; }
+
+  // Was TearDown() run?
+  bool tear_down_was_run() const { return tear_down_was_run_; }
+
+ private:
+  FailureType failure_in_set_up_;
+  bool set_up_was_run_;
+  bool tear_down_was_run_;
+};
+
+// Was the TEST run?
+bool test_was_run;
+
+// The sole purpose of this TEST is to enable us to check whether it
+// was run.
+TEST(FooTest, Bar) {
+  test_was_run = true;
+}
+
+// Prints the message and aborts the program if condition is false.
+void Check(bool condition, const char* msg) {
+  if (!condition) {
+    printf("FAILED: %s\n", msg);
+    testing::internal::posix::Abort();
+  }
+}
+
+// Runs the tests.  Return true if and only if successful.
+//
+// The 'failure' parameter specifies the type of failure that should
+// be generated by the global set-up.
+int RunAllTests(MyEnvironment* env, FailureType failure) {
+  env->Reset();
+  env->set_failure_in_set_up(failure);
+  test_was_run = false;
+  testing::internal::GetUnitTestImpl()->ClearAdHocTestResult();
+  return RUN_ALL_TESTS();
+}
+
+}  // namespace
+
+int main(int argc, char **argv) {
+  testing::InitGoogleTest(&argc, argv);
+
+  // Registers a global test environment, and verifies that the
+  // registration function returns its argument.
+  MyEnvironment* const env = new MyEnvironment;
+  Check(testing::AddGlobalTestEnvironment(env) == env,
+        "AddGlobalTestEnvironment() should return its argument.");
+
+  // Verifies that RUN_ALL_TESTS() runs the tests when the global
+  // set-up is successful.
+  Check(RunAllTests(env, NO_FAILURE) != 0,
+        "RUN_ALL_TESTS() should return non-zero, as the global tear-down "
+        "should generate a failure.");
+  Check(test_was_run,
+        "The tests should run, as the global set-up should generate no "
+        "failure");
+  Check(env->tear_down_was_run(),
+        "The global tear-down should run, as the global set-up was run.");
+
+  // Verifies that RUN_ALL_TESTS() runs the tests when the global
+  // set-up generates no fatal failure.
+  Check(RunAllTests(env, NON_FATAL_FAILURE) != 0,
+        "RUN_ALL_TESTS() should return non-zero, as both the global set-up "
+        "and the global tear-down should generate a non-fatal failure.");
+  Check(test_was_run,
+        "The tests should run, as the global set-up should generate no "
+        "fatal failure.");
+  Check(env->tear_down_was_run(),
+        "The global tear-down should run, as the global set-up was run.");
+
+  // Verifies that RUN_ALL_TESTS() runs no test when the global set-up
+  // generates a fatal failure.
+  Check(RunAllTests(env, FATAL_FAILURE) != 0,
+        "RUN_ALL_TESTS() should return non-zero, as the global set-up "
+        "should generate a fatal failure.");
+  Check(!test_was_run,
+        "The tests should not run, as the global set-up should generate "
+        "a fatal failure.");
+  Check(env->tear_down_was_run(),
+        "The global tear-down should run, as the global set-up was run.");
+
+  // Verifies that RUN_ALL_TESTS() doesn't do global set-up or
+  // tear-down when there is no test to run.
+  testing::GTEST_FLAG(filter) = "-*";
+  Check(RunAllTests(env, NO_FAILURE) == 0,
+        "RUN_ALL_TESTS() should return zero, as there is no test to run.");
+  Check(!env->set_up_was_run(),
+        "The global set-up should not run, as there is no test to run.");
+  Check(!env->tear_down_was_run(),
+        "The global tear-down should not run, "
+        "as the global set-up was not run.");
+
+  printf("PASS\n");
+  return 0;
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_help_test.py b/build/_deps/googletest-src/googletest/test/gtest_help_test.py
new file mode 100755
index 0000000000000000000000000000000000000000..582d24c2dcce894538aa63ccbd6120bdd4b350a0
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_help_test.py
@@ -0,0 +1,170 @@
+#!/usr/bin/env python
+#
+# Copyright 2009, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Tests the --help flag of Google C++ Testing and Mocking Framework.
+
+SYNOPSIS
+       gtest_help_test.py --build_dir=BUILD/DIR
+         # where BUILD/DIR contains the built gtest_help_test_ file.
+       gtest_help_test.py
+"""
+
+import os
+import re
+import gtest_test_utils
+
+
+IS_LINUX = os.name == 'posix' and os.uname()[0] == 'Linux'
+IS_WINDOWS = os.name == 'nt'
+
+PROGRAM_PATH = gtest_test_utils.GetTestExecutablePath('gtest_help_test_')
+FLAG_PREFIX = '--gtest_'
+DEATH_TEST_STYLE_FLAG = FLAG_PREFIX + 'death_test_style'
+STREAM_RESULT_TO_FLAG = FLAG_PREFIX + 'stream_result_to'
+UNKNOWN_FLAG = FLAG_PREFIX + 'unknown_flag_for_testing'
+LIST_TESTS_FLAG = FLAG_PREFIX + 'list_tests'
+INCORRECT_FLAG_VARIANTS = [re.sub('^--', '-', LIST_TESTS_FLAG),
+                           re.sub('^--', '/', LIST_TESTS_FLAG),
+                           re.sub('_', '-', LIST_TESTS_FLAG)]
+INTERNAL_FLAG_FOR_TESTING = FLAG_PREFIX + 'internal_flag_for_testing'
+
+SUPPORTS_DEATH_TESTS = "DeathTest" in gtest_test_utils.Subprocess(
+    [PROGRAM_PATH, LIST_TESTS_FLAG]).output
+
+# The help message must match this regex.
+HELP_REGEX = re.compile(
+    FLAG_PREFIX + r'list_tests.*' +
+    FLAG_PREFIX + r'filter=.*' +
+    FLAG_PREFIX + r'also_run_disabled_tests.*' +
+    FLAG_PREFIX + r'repeat=.*' +
+    FLAG_PREFIX + r'shuffle.*' +
+    FLAG_PREFIX + r'random_seed=.*' +
+    FLAG_PREFIX + r'color=.*' +
+    FLAG_PREFIX + r'print_time.*' +
+    FLAG_PREFIX + r'output=.*' +
+    FLAG_PREFIX + r'break_on_failure.*' +
+    FLAG_PREFIX + r'throw_on_failure.*' +
+    FLAG_PREFIX + r'catch_exceptions=0.*',
+    re.DOTALL)
+
+
+def RunWithFlag(flag):
+  """Runs gtest_help_test_ with the given flag.
+
+  Returns:
+    the exit code and the text output as a tuple.
+  Args:
+    flag: the command-line flag to pass to gtest_help_test_, or None.
+  """
+
+  if flag is None:
+    command = [PROGRAM_PATH]
+  else:
+    command = [PROGRAM_PATH, flag]
+  child = gtest_test_utils.Subprocess(command)
+  return child.exit_code, child.output
+
+
+class GTestHelpTest(gtest_test_utils.TestCase):
+  """Tests the --help flag and its equivalent forms."""
+
+  def TestHelpFlag(self, flag):
+    """Verifies correct behavior when help flag is specified.
+
+    The right message must be printed and the tests must
+    skipped when the given flag is specified.
+
+    Args:
+      flag:  A flag to pass to the binary or None.
+    """
+
+    exit_code, output = RunWithFlag(flag)
+    self.assertEquals(0, exit_code)
+    self.assert_(HELP_REGEX.search(output), output)
+
+    if IS_LINUX:
+      self.assert_(STREAM_RESULT_TO_FLAG in output, output)
+    else:
+      self.assert_(STREAM_RESULT_TO_FLAG not in output, output)
+
+    if SUPPORTS_DEATH_TESTS and not IS_WINDOWS:
+      self.assert_(DEATH_TEST_STYLE_FLAG in output, output)
+    else:
+      self.assert_(DEATH_TEST_STYLE_FLAG not in output, output)
+
+  def TestNonHelpFlag(self, flag):
+    """Verifies correct behavior when no help flag is specified.
+
+    Verifies that when no help flag is specified, the tests are run
+    and the help message is not printed.
+
+    Args:
+      flag:  A flag to pass to the binary or None.
+    """
+
+    exit_code, output = RunWithFlag(flag)
+    self.assert_(exit_code != 0)
+    self.assert_(not HELP_REGEX.search(output), output)
+
+  def testPrintsHelpWithFullFlag(self):
+    self.TestHelpFlag('--help')
+
+  def testPrintsHelpWithShortFlag(self):
+    self.TestHelpFlag('-h')
+
+  def testPrintsHelpWithQuestionFlag(self):
+    self.TestHelpFlag('-?')
+
+  def testPrintsHelpWithWindowsStyleQuestionFlag(self):
+    self.TestHelpFlag('/?')
+
+  def testPrintsHelpWithUnrecognizedGoogleTestFlag(self):
+    self.TestHelpFlag(UNKNOWN_FLAG)
+
+  def testPrintsHelpWithIncorrectFlagStyle(self):
+    for incorrect_flag in INCORRECT_FLAG_VARIANTS:
+      self.TestHelpFlag(incorrect_flag)
+
+  def testRunsTestsWithoutHelpFlag(self):
+    """Verifies that when no help flag is specified, the tests are run
+    and the help message is not printed."""
+
+    self.TestNonHelpFlag(None)
+
+  def testRunsTestsWithGtestInternalFlag(self):
+    """Verifies that the tests are run and no help message is printed when
+    a flag starting with Google Test prefix and 'internal_' is supplied."""
+
+    self.TestNonHelpFlag(INTERNAL_FLAG_FOR_TESTING)
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/gtest_help_test_.cc b/build/_deps/googletest-src/googletest/test/gtest_help_test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..750ae6ce95fcbcb338ed5db2b588f15cdd5c2f9e
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_help_test_.cc
@@ -0,0 +1,45 @@
+// Copyright 2009, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// This program is meant to be run by gtest_help_test.py.  Do not run
+// it directly.
+
+#include "gtest/gtest.h"
+
+// When a help flag is specified, this program should skip the tests
+// and exit with 0; otherwise the following test will be executed,
+// causing this program to exit with a non-zero code.
+TEST(HelpFlagTest, ShouldNotBeRun) {
+  ASSERT_TRUE(false) << "Tests shouldn't be run when --help is specified.";
+}
+
+#if GTEST_HAS_DEATH_TEST
+TEST(DeathTest, UsedByPythonScriptToDetectSupportForDeathTestsInThisBinary) {}
+#endif
diff --git a/build/_deps/googletest-src/googletest/test/gtest_json_test_utils.py b/build/_deps/googletest-src/googletest/test/gtest_json_test_utils.py
new file mode 100644
index 0000000000000000000000000000000000000000..62bbfc288f82b387cd83446c0a05ba167b1aa754
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_json_test_utils.py
@@ -0,0 +1,60 @@
+# Copyright 2018, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Unit test utilities for gtest_json_output."""
+
+import re
+
+
+def normalize(obj):
+  """Normalize output object.
+
+  Args:
+     obj: Google Test's JSON output object to normalize.
+
+  Returns:
+     Normalized output without any references to transient information that may
+     change from run to run.
+  """
+  def _normalize(key, value):
+    if key == 'time':
+      return re.sub(r'^\d+(\.\d+)?s$', '*', value)
+    elif key == 'timestamp':
+      return re.sub(r'^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\dZ$', '*', value)
+    elif key == 'failure':
+      value = re.sub(r'^.*[/\\](.*:)\d+\n', '\\1*\n', value)
+      return re.sub(r'Stack trace:\n(.|\n)*', 'Stack trace:\n*', value)
+    else:
+      return normalize(value)
+  if isinstance(obj, dict):
+    return {k: _normalize(k, v) for k, v in obj.items()}
+  if isinstance(obj, list):
+    return [normalize(x) for x in obj]
+  else:
+    return obj
diff --git a/build/_deps/googletest-src/googletest/test/gtest_list_output_unittest.py b/build/_deps/googletest-src/googletest/test/gtest_list_output_unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..3bba7ea2cfd37cad5509f40f8e8b0022706be784
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_list_output_unittest.py
@@ -0,0 +1,141 @@
+#!/usr/bin/env python
+#
+# Copyright 2006, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+"""Unit test for Google Test's --gtest_list_tests flag.
+
+A user can ask Google Test to list all tests by specifying the
+--gtest_list_tests flag. If output is requested, via --gtest_output=xml
+or --gtest_output=json, the tests are listed, with extra information in the
+output file.
+This script tests such functionality by invoking gtest_list_output_unittest_
+ (a program written with Google Test) the command line flags.
+"""
+
+import os
+import re
+import gtest_test_utils
+
+GTEST_LIST_TESTS_FLAG = '--gtest_list_tests'
+GTEST_OUTPUT_FLAG = '--gtest_output'
+
+EXPECTED_XML = """<\?xml version="1.0" encoding="UTF-8"\?>
+<testsuites tests="2" name="AllTests">
+  <testsuite name="FooTest" tests="2">
+    <testcase name="Test1" file=".*gtest_list_output_unittest_.cc" line="43" />
+    <testcase name="Test2" file=".*gtest_list_output_unittest_.cc" line="45" />
+  </testsuite>
+</testsuites>
+"""
+
+EXPECTED_JSON = """{
+  "tests": 2,
+  "name": "AllTests",
+  "testsuites": \[
+    {
+      "name": "FooTest",
+      "tests": 2,
+      "testsuite": \[
+        {
+          "name": "Test1",
+          "file": ".*gtest_list_output_unittest_.cc",
+          "line": 43
+        },
+        {
+          "name": "Test2",
+          "file": ".*gtest_list_output_unittest_.cc",
+          "line": 45
+        }
+      \]
+    }
+  \]
+}
+"""
+
+
+class GTestListTestsOutputUnitTest(gtest_test_utils.TestCase):
+  """Unit test for Google Test's list tests with output to file functionality.
+  """
+
+  def testXml(self):
+    """Verifies XML output for listing tests in a Google Test binary.
+
+    Runs a test program that generates an empty XML output, and
+    tests that the XML output is expected.
+    """
+    self._TestOutput('xml', EXPECTED_XML)
+
+  def testJSON(self):
+    """Verifies XML output for listing tests in a Google Test binary.
+
+    Runs a test program that generates an empty XML output, and
+    tests that the XML output is expected.
+    """
+    self._TestOutput('json', EXPECTED_JSON)
+
+  def _GetOutput(self, out_format):
+    file_path = os.path.join(gtest_test_utils.GetTempDir(),
+                             'test_out.' + out_format)
+    gtest_prog_path = gtest_test_utils.GetTestExecutablePath(
+        'gtest_list_output_unittest_')
+
+    command = ([
+        gtest_prog_path,
+        '%s=%s:%s' % (GTEST_OUTPUT_FLAG, out_format, file_path),
+        '--gtest_list_tests'
+    ])
+    environ_copy = os.environ.copy()
+    p = gtest_test_utils.Subprocess(
+        command, env=environ_copy, working_dir=gtest_test_utils.GetTempDir())
+
+    self.assert_(p.exited)
+    self.assertEquals(0, p.exit_code)
+    with open(file_path) as f:
+      result = f.read()
+    return result
+
+  def _TestOutput(self, test_format, expected_output):
+    actual = self._GetOutput(test_format)
+    actual_lines = actual.splitlines()
+    expected_lines = expected_output.splitlines()
+    line_count = 0
+    for actual_line in actual_lines:
+      expected_line = expected_lines[line_count]
+      expected_line_re = re.compile(expected_line.strip())
+      self.assert_(
+          expected_line_re.match(actual_line.strip()),
+          ('actual output of "%s",\n'
+           'which does not match expected regex of "%s"\n'
+           'on line %d' % (actual, expected_output, line_count)))
+      line_count = line_count + 1
+
+
+if __name__ == '__main__':
+  os.environ['GTEST_STACK_TRACE_DEPTH'] = '1'
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/gtest_list_output_unittest_.cc b/build/_deps/googletest-src/googletest/test/gtest_list_output_unittest_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b1c7b4de3461fc1645f411b71f9e37f8224fd8a6
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_list_output_unittest_.cc
@@ -0,0 +1,51 @@
+// Copyright 2018, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Author: david.schuldenfrei@gmail.com (David Schuldenfrei)
+
+// Unit test for Google Test's --gtest_list_tests and --gtest_output flag.
+//
+// A user can ask Google Test to list all tests that will run,
+// and have the output saved in a Json/Xml file.
+// The tests will not be run after listing.
+//
+// This program will be invoked from a Python unit test.
+// Don't run it directly.
+
+#include "gtest/gtest.h"
+
+TEST(FooTest, Test1) {}
+
+TEST(FooTest, Test2) {}
+
+int main(int argc, char **argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_main_unittest.cc b/build/_deps/googletest-src/googletest/test/gtest_main_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..eddedeabe8f3bb083dabca600e72f451b8d94cdb
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_main_unittest.cc
@@ -0,0 +1,44 @@
+// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include "gtest/gtest.h"
+
+// Tests that we don't have to define main() when we link to
+// gtest_main instead of gtest.
+
+namespace {
+
+TEST(GTestMainTest, ShouldSucceed) {
+}
+
+}  // namespace
+
+// We are using the main() function defined in gtest_main.cc, so we
+// don't define it here.
diff --git a/build/_deps/googletest-src/googletest/test/gtest_no_test_unittest.cc b/build/_deps/googletest-src/googletest/test/gtest_no_test_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d4f88dbfdfa68e6a0c40bb99fac6e4dbccff8f3b
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_no_test_unittest.cc
@@ -0,0 +1,54 @@
+// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Tests that a Google Test program that has no test defined can run
+// successfully.
+
+#include "gtest/gtest.h"
+
+int main(int argc, char **argv) {
+  testing::InitGoogleTest(&argc, argv);
+
+  // An ad-hoc assertion outside of all tests.
+  //
+  // This serves three purposes:
+  //
+  // 1. It verifies that an ad-hoc assertion can be executed even if
+  //    no test is defined.
+  // 2. It verifies that a failed ad-hoc assertion causes the test
+  //    program to fail.
+  // 3. We had a bug where the XML output won't be generated if an
+  //    assertion is executed before RUN_ALL_TESTS() is called, even
+  //    though --gtest_output=xml is specified.  This makes sure the
+  //    bug is fixed and doesn't regress.
+  EXPECT_EQ(1, 2);
+
+  // The above EXPECT_EQ() should cause RUN_ALL_TESTS() to return non-zero.
+  return RUN_ALL_TESTS() ? 0 : 1;
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_pred_impl_unittest.cc b/build/_deps/googletest-src/googletest/test/gtest_pred_impl_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1afe5e2da7fe552e5ff4ca797e9b7c289f45e335
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_pred_impl_unittest.cc
@@ -0,0 +1,2427 @@
+// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// This file is AUTOMATICALLY GENERATED on 01/02/2019 by command
+// 'gen_gtest_pred_impl.py 5'.  DO NOT EDIT BY HAND!
+
+// Regression test for gtest_pred_impl.h
+//
+// This file is generated by a script and quite long.  If you intend to
+// learn how Google Test works by reading its unit tests, read
+// gtest_unittest.cc instead.
+//
+// This is intended as a regression test for the Google Test predicate
+// assertions.  We compile it as part of the gtest_unittest target
+// only to keep the implementation tidy and compact, as it is quite
+// involved to set up the stage for testing Google Test using Google
+// Test itself.
+//
+// Currently, gtest_unittest takes ~11 seconds to run in the testing
+// daemon.  In the future, if it grows too large and needs much more
+// time to finish, we should consider separating this file into a
+// stand-alone regression test.
+
+#include <iostream>
+
+#include "gtest/gtest.h"
+#include "gtest/gtest-spi.h"
+
+// A user-defined data type.
+struct Bool {
+  explicit Bool(int val) : value(val != 0) {}
+
+  bool operator>(int n) const { return value > Bool(n).value; }
+
+  Bool operator+(const Bool& rhs) const { return Bool(value + rhs.value); }
+
+  bool operator==(const Bool& rhs) const { return value == rhs.value; }
+
+  bool value;
+};
+
+// Enables Bool to be used in assertions.
+std::ostream& operator<<(std::ostream& os, const Bool& x) {
+  return os << (x.value ? "true" : "false");
+}
+
+// Sample functions/functors for testing unary predicate assertions.
+
+// A unary predicate function.
+template <typename T1>
+bool PredFunction1(T1 v1) {
+  return v1 > 0;
+}
+
+// The following two functions are needed to circumvent a bug in
+// gcc 2.95.3, which sometimes has problem with the above template
+// function.
+bool PredFunction1Int(int v1) {
+  return v1 > 0;
+}
+bool PredFunction1Bool(Bool v1) {
+  return v1 > 0;
+}
+
+// A unary predicate functor.
+struct PredFunctor1 {
+  template <typename T1>
+  bool operator()(const T1& v1) {
+    return v1 > 0;
+  }
+};
+
+// A unary predicate-formatter function.
+template <typename T1>
+testing::AssertionResult PredFormatFunction1(const char* e1,
+                                             const T1& v1) {
+  if (PredFunction1(v1))
+    return testing::AssertionSuccess();
+
+  return testing::AssertionFailure()
+      << e1
+      << " is expected to be positive, but evaluates to "
+      << v1 << ".";
+}
+
+// A unary predicate-formatter functor.
+struct PredFormatFunctor1 {
+  template <typename T1>
+  testing::AssertionResult operator()(const char* e1,
+                                      const T1& v1) const {
+    return PredFormatFunction1(e1, v1);
+  }
+};
+
+// Tests for {EXPECT|ASSERT}_PRED_FORMAT1.
+
+class Predicate1Test : public testing::Test {
+ protected:
+  void SetUp() override {
+    expected_to_finish_ = true;
+    finished_ = false;
+    n1_ = 0;
+  }
+
+  void TearDown() override {
+    // Verifies that each of the predicate's arguments was evaluated
+    // exactly once.
+    EXPECT_EQ(1, n1_) <<
+        "The predicate assertion didn't evaluate argument 2 "
+        "exactly once.";
+
+    // Verifies that the control flow in the test function is expected.
+    if (expected_to_finish_ && !finished_) {
+      FAIL() << "The predicate assertion unexpactedly aborted the test.";
+    } else if (!expected_to_finish_ && finished_) {
+      FAIL() << "The failed predicate assertion didn't abort the test "
+                "as expected.";
+    }
+  }
+
+  // true if and only if the test function is expected to run to finish.
+  static bool expected_to_finish_;
+
+  // true if and only if the test function did run to finish.
+  static bool finished_;
+
+  static int n1_;
+};
+
+bool Predicate1Test::expected_to_finish_;
+bool Predicate1Test::finished_;
+int Predicate1Test::n1_;
+
+typedef Predicate1Test EXPECT_PRED_FORMAT1Test;
+typedef Predicate1Test ASSERT_PRED_FORMAT1Test;
+typedef Predicate1Test EXPECT_PRED1Test;
+typedef Predicate1Test ASSERT_PRED1Test;
+
+// Tests a successful EXPECT_PRED1 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED1Test, FunctionOnBuiltInTypeSuccess) {
+  EXPECT_PRED1(PredFunction1Int,
+               ++n1_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED1 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED1Test, FunctionOnUserTypeSuccess) {
+  EXPECT_PRED1(PredFunction1Bool,
+               Bool(++n1_));
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED1 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED1Test, FunctorOnBuiltInTypeSuccess) {
+  EXPECT_PRED1(PredFunctor1(),
+               ++n1_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED1 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED1Test, FunctorOnUserTypeSuccess) {
+  EXPECT_PRED1(PredFunctor1(),
+               Bool(++n1_));
+  finished_ = true;
+}
+
+// Tests a failed EXPECT_PRED1 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED1Test, FunctionOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED1(PredFunction1Int,
+                 n1_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED1 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED1Test, FunctionOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED1(PredFunction1Bool,
+                 Bool(n1_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED1 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED1Test, FunctorOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED1(PredFunctor1(),
+                 n1_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED1 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED1Test, FunctorOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED1(PredFunctor1(),
+                 Bool(n1_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful ASSERT_PRED1 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED1Test, FunctionOnBuiltInTypeSuccess) {
+  ASSERT_PRED1(PredFunction1Int,
+               ++n1_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED1 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED1Test, FunctionOnUserTypeSuccess) {
+  ASSERT_PRED1(PredFunction1Bool,
+               Bool(++n1_));
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED1 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED1Test, FunctorOnBuiltInTypeSuccess) {
+  ASSERT_PRED1(PredFunctor1(),
+               ++n1_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED1 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED1Test, FunctorOnUserTypeSuccess) {
+  ASSERT_PRED1(PredFunctor1(),
+               Bool(++n1_));
+  finished_ = true;
+}
+
+// Tests a failed ASSERT_PRED1 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED1Test, FunctionOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED1(PredFunction1Int,
+                 n1_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED1 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED1Test, FunctionOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED1(PredFunction1Bool,
+                 Bool(n1_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED1 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED1Test, FunctorOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED1(PredFunctor1(),
+                 n1_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED1 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED1Test, FunctorOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED1(PredFunctor1(),
+                 Bool(n1_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful EXPECT_PRED_FORMAT1 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT1Test, FunctionOnBuiltInTypeSuccess) {
+  EXPECT_PRED_FORMAT1(PredFormatFunction1,
+                      ++n1_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT1 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT1Test, FunctionOnUserTypeSuccess) {
+  EXPECT_PRED_FORMAT1(PredFormatFunction1,
+                      Bool(++n1_));
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT1 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT1Test, FunctorOnBuiltInTypeSuccess) {
+  EXPECT_PRED_FORMAT1(PredFormatFunctor1(),
+                      ++n1_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT1 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT1Test, FunctorOnUserTypeSuccess) {
+  EXPECT_PRED_FORMAT1(PredFormatFunctor1(),
+                      Bool(++n1_));
+  finished_ = true;
+}
+
+// Tests a failed EXPECT_PRED_FORMAT1 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT1Test, FunctionOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT1(PredFormatFunction1,
+                        n1_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT1 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT1Test, FunctionOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT1(PredFormatFunction1,
+                        Bool(n1_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT1 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT1Test, FunctorOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT1(PredFormatFunctor1(),
+                        n1_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT1 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT1Test, FunctorOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT1(PredFormatFunctor1(),
+                        Bool(n1_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful ASSERT_PRED_FORMAT1 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT1Test, FunctionOnBuiltInTypeSuccess) {
+  ASSERT_PRED_FORMAT1(PredFormatFunction1,
+                      ++n1_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT1 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT1Test, FunctionOnUserTypeSuccess) {
+  ASSERT_PRED_FORMAT1(PredFormatFunction1,
+                      Bool(++n1_));
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT1 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT1Test, FunctorOnBuiltInTypeSuccess) {
+  ASSERT_PRED_FORMAT1(PredFormatFunctor1(),
+                      ++n1_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT1 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT1Test, FunctorOnUserTypeSuccess) {
+  ASSERT_PRED_FORMAT1(PredFormatFunctor1(),
+                      Bool(++n1_));
+  finished_ = true;
+}
+
+// Tests a failed ASSERT_PRED_FORMAT1 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT1Test, FunctionOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT1(PredFormatFunction1,
+                        n1_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT1 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT1Test, FunctionOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT1(PredFormatFunction1,
+                        Bool(n1_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT1 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT1Test, FunctorOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT1(PredFormatFunctor1(),
+                        n1_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT1 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT1Test, FunctorOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT1(PredFormatFunctor1(),
+                        Bool(n1_++));
+    finished_ = true;
+  }, "");
+}
+// Sample functions/functors for testing binary predicate assertions.
+
+// A binary predicate function.
+template <typename T1, typename T2>
+bool PredFunction2(T1 v1, T2 v2) {
+  return v1 + v2 > 0;
+}
+
+// The following two functions are needed to circumvent a bug in
+// gcc 2.95.3, which sometimes has problem with the above template
+// function.
+bool PredFunction2Int(int v1, int v2) {
+  return v1 + v2 > 0;
+}
+bool PredFunction2Bool(Bool v1, Bool v2) {
+  return v1 + v2 > 0;
+}
+
+// A binary predicate functor.
+struct PredFunctor2 {
+  template <typename T1, typename T2>
+  bool operator()(const T1& v1,
+                  const T2& v2) {
+    return v1 + v2 > 0;
+  }
+};
+
+// A binary predicate-formatter function.
+template <typename T1, typename T2>
+testing::AssertionResult PredFormatFunction2(const char* e1,
+                                             const char* e2,
+                                             const T1& v1,
+                                             const T2& v2) {
+  if (PredFunction2(v1, v2))
+    return testing::AssertionSuccess();
+
+  return testing::AssertionFailure()
+      << e1 << " + " << e2
+      << " is expected to be positive, but evaluates to "
+      << v1 + v2 << ".";
+}
+
+// A binary predicate-formatter functor.
+struct PredFormatFunctor2 {
+  template <typename T1, typename T2>
+  testing::AssertionResult operator()(const char* e1,
+                                      const char* e2,
+                                      const T1& v1,
+                                      const T2& v2) const {
+    return PredFormatFunction2(e1, e2, v1, v2);
+  }
+};
+
+// Tests for {EXPECT|ASSERT}_PRED_FORMAT2.
+
+class Predicate2Test : public testing::Test {
+ protected:
+  void SetUp() override {
+    expected_to_finish_ = true;
+    finished_ = false;
+    n1_ = n2_ = 0;
+  }
+
+  void TearDown() override {
+    // Verifies that each of the predicate's arguments was evaluated
+    // exactly once.
+    EXPECT_EQ(1, n1_) <<
+        "The predicate assertion didn't evaluate argument 2 "
+        "exactly once.";
+    EXPECT_EQ(1, n2_) <<
+        "The predicate assertion didn't evaluate argument 3 "
+        "exactly once.";
+
+    // Verifies that the control flow in the test function is expected.
+    if (expected_to_finish_ && !finished_) {
+      FAIL() << "The predicate assertion unexpactedly aborted the test.";
+    } else if (!expected_to_finish_ && finished_) {
+      FAIL() << "The failed predicate assertion didn't abort the test "
+                "as expected.";
+    }
+  }
+
+  // true if and only if the test function is expected to run to finish.
+  static bool expected_to_finish_;
+
+  // true if and only if the test function did run to finish.
+  static bool finished_;
+
+  static int n1_;
+  static int n2_;
+};
+
+bool Predicate2Test::expected_to_finish_;
+bool Predicate2Test::finished_;
+int Predicate2Test::n1_;
+int Predicate2Test::n2_;
+
+typedef Predicate2Test EXPECT_PRED_FORMAT2Test;
+typedef Predicate2Test ASSERT_PRED_FORMAT2Test;
+typedef Predicate2Test EXPECT_PRED2Test;
+typedef Predicate2Test ASSERT_PRED2Test;
+
+// Tests a successful EXPECT_PRED2 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED2Test, FunctionOnBuiltInTypeSuccess) {
+  EXPECT_PRED2(PredFunction2Int,
+               ++n1_,
+               ++n2_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED2 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED2Test, FunctionOnUserTypeSuccess) {
+  EXPECT_PRED2(PredFunction2Bool,
+               Bool(++n1_),
+               Bool(++n2_));
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED2 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED2Test, FunctorOnBuiltInTypeSuccess) {
+  EXPECT_PRED2(PredFunctor2(),
+               ++n1_,
+               ++n2_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED2 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED2Test, FunctorOnUserTypeSuccess) {
+  EXPECT_PRED2(PredFunctor2(),
+               Bool(++n1_),
+               Bool(++n2_));
+  finished_ = true;
+}
+
+// Tests a failed EXPECT_PRED2 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED2Test, FunctionOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED2(PredFunction2Int,
+                 n1_++,
+                 n2_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED2 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED2Test, FunctionOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED2(PredFunction2Bool,
+                 Bool(n1_++),
+                 Bool(n2_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED2 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED2Test, FunctorOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED2(PredFunctor2(),
+                 n1_++,
+                 n2_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED2 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED2Test, FunctorOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED2(PredFunctor2(),
+                 Bool(n1_++),
+                 Bool(n2_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful ASSERT_PRED2 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED2Test, FunctionOnBuiltInTypeSuccess) {
+  ASSERT_PRED2(PredFunction2Int,
+               ++n1_,
+               ++n2_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED2 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED2Test, FunctionOnUserTypeSuccess) {
+  ASSERT_PRED2(PredFunction2Bool,
+               Bool(++n1_),
+               Bool(++n2_));
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED2 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED2Test, FunctorOnBuiltInTypeSuccess) {
+  ASSERT_PRED2(PredFunctor2(),
+               ++n1_,
+               ++n2_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED2 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED2Test, FunctorOnUserTypeSuccess) {
+  ASSERT_PRED2(PredFunctor2(),
+               Bool(++n1_),
+               Bool(++n2_));
+  finished_ = true;
+}
+
+// Tests a failed ASSERT_PRED2 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED2Test, FunctionOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED2(PredFunction2Int,
+                 n1_++,
+                 n2_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED2 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED2Test, FunctionOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED2(PredFunction2Bool,
+                 Bool(n1_++),
+                 Bool(n2_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED2 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED2Test, FunctorOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED2(PredFunctor2(),
+                 n1_++,
+                 n2_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED2 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED2Test, FunctorOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED2(PredFunctor2(),
+                 Bool(n1_++),
+                 Bool(n2_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful EXPECT_PRED_FORMAT2 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT2Test, FunctionOnBuiltInTypeSuccess) {
+  EXPECT_PRED_FORMAT2(PredFormatFunction2,
+                      ++n1_,
+                      ++n2_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT2 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT2Test, FunctionOnUserTypeSuccess) {
+  EXPECT_PRED_FORMAT2(PredFormatFunction2,
+                      Bool(++n1_),
+                      Bool(++n2_));
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT2 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT2Test, FunctorOnBuiltInTypeSuccess) {
+  EXPECT_PRED_FORMAT2(PredFormatFunctor2(),
+                      ++n1_,
+                      ++n2_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT2 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT2Test, FunctorOnUserTypeSuccess) {
+  EXPECT_PRED_FORMAT2(PredFormatFunctor2(),
+                      Bool(++n1_),
+                      Bool(++n2_));
+  finished_ = true;
+}
+
+// Tests a failed EXPECT_PRED_FORMAT2 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT2Test, FunctionOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT2(PredFormatFunction2,
+                        n1_++,
+                        n2_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT2 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT2Test, FunctionOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT2(PredFormatFunction2,
+                        Bool(n1_++),
+                        Bool(n2_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT2 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT2Test, FunctorOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT2(PredFormatFunctor2(),
+                        n1_++,
+                        n2_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT2 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT2Test, FunctorOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT2(PredFormatFunctor2(),
+                        Bool(n1_++),
+                        Bool(n2_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful ASSERT_PRED_FORMAT2 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT2Test, FunctionOnBuiltInTypeSuccess) {
+  ASSERT_PRED_FORMAT2(PredFormatFunction2,
+                      ++n1_,
+                      ++n2_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT2 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT2Test, FunctionOnUserTypeSuccess) {
+  ASSERT_PRED_FORMAT2(PredFormatFunction2,
+                      Bool(++n1_),
+                      Bool(++n2_));
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT2 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT2Test, FunctorOnBuiltInTypeSuccess) {
+  ASSERT_PRED_FORMAT2(PredFormatFunctor2(),
+                      ++n1_,
+                      ++n2_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT2 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT2Test, FunctorOnUserTypeSuccess) {
+  ASSERT_PRED_FORMAT2(PredFormatFunctor2(),
+                      Bool(++n1_),
+                      Bool(++n2_));
+  finished_ = true;
+}
+
+// Tests a failed ASSERT_PRED_FORMAT2 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT2Test, FunctionOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT2(PredFormatFunction2,
+                        n1_++,
+                        n2_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT2 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT2Test, FunctionOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT2(PredFormatFunction2,
+                        Bool(n1_++),
+                        Bool(n2_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT2 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT2Test, FunctorOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT2(PredFormatFunctor2(),
+                        n1_++,
+                        n2_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT2 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT2Test, FunctorOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT2(PredFormatFunctor2(),
+                        Bool(n1_++),
+                        Bool(n2_++));
+    finished_ = true;
+  }, "");
+}
+// Sample functions/functors for testing ternary predicate assertions.
+
+// A ternary predicate function.
+template <typename T1, typename T2, typename T3>
+bool PredFunction3(T1 v1, T2 v2, T3 v3) {
+  return v1 + v2 + v3 > 0;
+}
+
+// The following two functions are needed to circumvent a bug in
+// gcc 2.95.3, which sometimes has problem with the above template
+// function.
+bool PredFunction3Int(int v1, int v2, int v3) {
+  return v1 + v2 + v3 > 0;
+}
+bool PredFunction3Bool(Bool v1, Bool v2, Bool v3) {
+  return v1 + v2 + v3 > 0;
+}
+
+// A ternary predicate functor.
+struct PredFunctor3 {
+  template <typename T1, typename T2, typename T3>
+  bool operator()(const T1& v1,
+                  const T2& v2,
+                  const T3& v3) {
+    return v1 + v2 + v3 > 0;
+  }
+};
+
+// A ternary predicate-formatter function.
+template <typename T1, typename T2, typename T3>
+testing::AssertionResult PredFormatFunction3(const char* e1,
+                                             const char* e2,
+                                             const char* e3,
+                                             const T1& v1,
+                                             const T2& v2,
+                                             const T3& v3) {
+  if (PredFunction3(v1, v2, v3))
+    return testing::AssertionSuccess();
+
+  return testing::AssertionFailure()
+      << e1 << " + " << e2 << " + " << e3
+      << " is expected to be positive, but evaluates to "
+      << v1 + v2 + v3 << ".";
+}
+
+// A ternary predicate-formatter functor.
+struct PredFormatFunctor3 {
+  template <typename T1, typename T2, typename T3>
+  testing::AssertionResult operator()(const char* e1,
+                                      const char* e2,
+                                      const char* e3,
+                                      const T1& v1,
+                                      const T2& v2,
+                                      const T3& v3) const {
+    return PredFormatFunction3(e1, e2, e3, v1, v2, v3);
+  }
+};
+
+// Tests for {EXPECT|ASSERT}_PRED_FORMAT3.
+
+class Predicate3Test : public testing::Test {
+ protected:
+  void SetUp() override {
+    expected_to_finish_ = true;
+    finished_ = false;
+    n1_ = n2_ = n3_ = 0;
+  }
+
+  void TearDown() override {
+    // Verifies that each of the predicate's arguments was evaluated
+    // exactly once.
+    EXPECT_EQ(1, n1_) <<
+        "The predicate assertion didn't evaluate argument 2 "
+        "exactly once.";
+    EXPECT_EQ(1, n2_) <<
+        "The predicate assertion didn't evaluate argument 3 "
+        "exactly once.";
+    EXPECT_EQ(1, n3_) <<
+        "The predicate assertion didn't evaluate argument 4 "
+        "exactly once.";
+
+    // Verifies that the control flow in the test function is expected.
+    if (expected_to_finish_ && !finished_) {
+      FAIL() << "The predicate assertion unexpactedly aborted the test.";
+    } else if (!expected_to_finish_ && finished_) {
+      FAIL() << "The failed predicate assertion didn't abort the test "
+                "as expected.";
+    }
+  }
+
+  // true if and only if the test function is expected to run to finish.
+  static bool expected_to_finish_;
+
+  // true if and only if the test function did run to finish.
+  static bool finished_;
+
+  static int n1_;
+  static int n2_;
+  static int n3_;
+};
+
+bool Predicate3Test::expected_to_finish_;
+bool Predicate3Test::finished_;
+int Predicate3Test::n1_;
+int Predicate3Test::n2_;
+int Predicate3Test::n3_;
+
+typedef Predicate3Test EXPECT_PRED_FORMAT3Test;
+typedef Predicate3Test ASSERT_PRED_FORMAT3Test;
+typedef Predicate3Test EXPECT_PRED3Test;
+typedef Predicate3Test ASSERT_PRED3Test;
+
+// Tests a successful EXPECT_PRED3 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED3Test, FunctionOnBuiltInTypeSuccess) {
+  EXPECT_PRED3(PredFunction3Int,
+               ++n1_,
+               ++n2_,
+               ++n3_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED3 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED3Test, FunctionOnUserTypeSuccess) {
+  EXPECT_PRED3(PredFunction3Bool,
+               Bool(++n1_),
+               Bool(++n2_),
+               Bool(++n3_));
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED3 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED3Test, FunctorOnBuiltInTypeSuccess) {
+  EXPECT_PRED3(PredFunctor3(),
+               ++n1_,
+               ++n2_,
+               ++n3_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED3 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED3Test, FunctorOnUserTypeSuccess) {
+  EXPECT_PRED3(PredFunctor3(),
+               Bool(++n1_),
+               Bool(++n2_),
+               Bool(++n3_));
+  finished_ = true;
+}
+
+// Tests a failed EXPECT_PRED3 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED3Test, FunctionOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED3(PredFunction3Int,
+                 n1_++,
+                 n2_++,
+                 n3_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED3 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED3Test, FunctionOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED3(PredFunction3Bool,
+                 Bool(n1_++),
+                 Bool(n2_++),
+                 Bool(n3_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED3 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED3Test, FunctorOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED3(PredFunctor3(),
+                 n1_++,
+                 n2_++,
+                 n3_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED3 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED3Test, FunctorOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED3(PredFunctor3(),
+                 Bool(n1_++),
+                 Bool(n2_++),
+                 Bool(n3_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful ASSERT_PRED3 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED3Test, FunctionOnBuiltInTypeSuccess) {
+  ASSERT_PRED3(PredFunction3Int,
+               ++n1_,
+               ++n2_,
+               ++n3_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED3 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED3Test, FunctionOnUserTypeSuccess) {
+  ASSERT_PRED3(PredFunction3Bool,
+               Bool(++n1_),
+               Bool(++n2_),
+               Bool(++n3_));
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED3 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED3Test, FunctorOnBuiltInTypeSuccess) {
+  ASSERT_PRED3(PredFunctor3(),
+               ++n1_,
+               ++n2_,
+               ++n3_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED3 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED3Test, FunctorOnUserTypeSuccess) {
+  ASSERT_PRED3(PredFunctor3(),
+               Bool(++n1_),
+               Bool(++n2_),
+               Bool(++n3_));
+  finished_ = true;
+}
+
+// Tests a failed ASSERT_PRED3 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED3Test, FunctionOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED3(PredFunction3Int,
+                 n1_++,
+                 n2_++,
+                 n3_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED3 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED3Test, FunctionOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED3(PredFunction3Bool,
+                 Bool(n1_++),
+                 Bool(n2_++),
+                 Bool(n3_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED3 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED3Test, FunctorOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED3(PredFunctor3(),
+                 n1_++,
+                 n2_++,
+                 n3_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED3 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED3Test, FunctorOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED3(PredFunctor3(),
+                 Bool(n1_++),
+                 Bool(n2_++),
+                 Bool(n3_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful EXPECT_PRED_FORMAT3 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT3Test, FunctionOnBuiltInTypeSuccess) {
+  EXPECT_PRED_FORMAT3(PredFormatFunction3,
+                      ++n1_,
+                      ++n2_,
+                      ++n3_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT3 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT3Test, FunctionOnUserTypeSuccess) {
+  EXPECT_PRED_FORMAT3(PredFormatFunction3,
+                      Bool(++n1_),
+                      Bool(++n2_),
+                      Bool(++n3_));
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT3 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT3Test, FunctorOnBuiltInTypeSuccess) {
+  EXPECT_PRED_FORMAT3(PredFormatFunctor3(),
+                      ++n1_,
+                      ++n2_,
+                      ++n3_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT3 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT3Test, FunctorOnUserTypeSuccess) {
+  EXPECT_PRED_FORMAT3(PredFormatFunctor3(),
+                      Bool(++n1_),
+                      Bool(++n2_),
+                      Bool(++n3_));
+  finished_ = true;
+}
+
+// Tests a failed EXPECT_PRED_FORMAT3 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT3Test, FunctionOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT3(PredFormatFunction3,
+                        n1_++,
+                        n2_++,
+                        n3_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT3 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT3Test, FunctionOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT3(PredFormatFunction3,
+                        Bool(n1_++),
+                        Bool(n2_++),
+                        Bool(n3_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT3 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT3Test, FunctorOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT3(PredFormatFunctor3(),
+                        n1_++,
+                        n2_++,
+                        n3_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT3 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT3Test, FunctorOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT3(PredFormatFunctor3(),
+                        Bool(n1_++),
+                        Bool(n2_++),
+                        Bool(n3_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful ASSERT_PRED_FORMAT3 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT3Test, FunctionOnBuiltInTypeSuccess) {
+  ASSERT_PRED_FORMAT3(PredFormatFunction3,
+                      ++n1_,
+                      ++n2_,
+                      ++n3_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT3 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT3Test, FunctionOnUserTypeSuccess) {
+  ASSERT_PRED_FORMAT3(PredFormatFunction3,
+                      Bool(++n1_),
+                      Bool(++n2_),
+                      Bool(++n3_));
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT3 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT3Test, FunctorOnBuiltInTypeSuccess) {
+  ASSERT_PRED_FORMAT3(PredFormatFunctor3(),
+                      ++n1_,
+                      ++n2_,
+                      ++n3_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT3 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT3Test, FunctorOnUserTypeSuccess) {
+  ASSERT_PRED_FORMAT3(PredFormatFunctor3(),
+                      Bool(++n1_),
+                      Bool(++n2_),
+                      Bool(++n3_));
+  finished_ = true;
+}
+
+// Tests a failed ASSERT_PRED_FORMAT3 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT3Test, FunctionOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT3(PredFormatFunction3,
+                        n1_++,
+                        n2_++,
+                        n3_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT3 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT3Test, FunctionOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT3(PredFormatFunction3,
+                        Bool(n1_++),
+                        Bool(n2_++),
+                        Bool(n3_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT3 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT3Test, FunctorOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT3(PredFormatFunctor3(),
+                        n1_++,
+                        n2_++,
+                        n3_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT3 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT3Test, FunctorOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT3(PredFormatFunctor3(),
+                        Bool(n1_++),
+                        Bool(n2_++),
+                        Bool(n3_++));
+    finished_ = true;
+  }, "");
+}
+// Sample functions/functors for testing 4-ary predicate assertions.
+
+// A 4-ary predicate function.
+template <typename T1, typename T2, typename T3, typename T4>
+bool PredFunction4(T1 v1, T2 v2, T3 v3, T4 v4) {
+  return v1 + v2 + v3 + v4 > 0;
+}
+
+// The following two functions are needed to circumvent a bug in
+// gcc 2.95.3, which sometimes has problem with the above template
+// function.
+bool PredFunction4Int(int v1, int v2, int v3, int v4) {
+  return v1 + v2 + v3 + v4 > 0;
+}
+bool PredFunction4Bool(Bool v1, Bool v2, Bool v3, Bool v4) {
+  return v1 + v2 + v3 + v4 > 0;
+}
+
+// A 4-ary predicate functor.
+struct PredFunctor4 {
+  template <typename T1, typename T2, typename T3, typename T4>
+  bool operator()(const T1& v1,
+                  const T2& v2,
+                  const T3& v3,
+                  const T4& v4) {
+    return v1 + v2 + v3 + v4 > 0;
+  }
+};
+
+// A 4-ary predicate-formatter function.
+template <typename T1, typename T2, typename T3, typename T4>
+testing::AssertionResult PredFormatFunction4(const char* e1,
+                                             const char* e2,
+                                             const char* e3,
+                                             const char* e4,
+                                             const T1& v1,
+                                             const T2& v2,
+                                             const T3& v3,
+                                             const T4& v4) {
+  if (PredFunction4(v1, v2, v3, v4))
+    return testing::AssertionSuccess();
+
+  return testing::AssertionFailure()
+      << e1 << " + " << e2 << " + " << e3 << " + " << e4
+      << " is expected to be positive, but evaluates to "
+      << v1 + v2 + v3 + v4 << ".";
+}
+
+// A 4-ary predicate-formatter functor.
+struct PredFormatFunctor4 {
+  template <typename T1, typename T2, typename T3, typename T4>
+  testing::AssertionResult operator()(const char* e1,
+                                      const char* e2,
+                                      const char* e3,
+                                      const char* e4,
+                                      const T1& v1,
+                                      const T2& v2,
+                                      const T3& v3,
+                                      const T4& v4) const {
+    return PredFormatFunction4(e1, e2, e3, e4, v1, v2, v3, v4);
+  }
+};
+
+// Tests for {EXPECT|ASSERT}_PRED_FORMAT4.
+
+class Predicate4Test : public testing::Test {
+ protected:
+  void SetUp() override {
+    expected_to_finish_ = true;
+    finished_ = false;
+    n1_ = n2_ = n3_ = n4_ = 0;
+  }
+
+  void TearDown() override {
+    // Verifies that each of the predicate's arguments was evaluated
+    // exactly once.
+    EXPECT_EQ(1, n1_) <<
+        "The predicate assertion didn't evaluate argument 2 "
+        "exactly once.";
+    EXPECT_EQ(1, n2_) <<
+        "The predicate assertion didn't evaluate argument 3 "
+        "exactly once.";
+    EXPECT_EQ(1, n3_) <<
+        "The predicate assertion didn't evaluate argument 4 "
+        "exactly once.";
+    EXPECT_EQ(1, n4_) <<
+        "The predicate assertion didn't evaluate argument 5 "
+        "exactly once.";
+
+    // Verifies that the control flow in the test function is expected.
+    if (expected_to_finish_ && !finished_) {
+      FAIL() << "The predicate assertion unexpactedly aborted the test.";
+    } else if (!expected_to_finish_ && finished_) {
+      FAIL() << "The failed predicate assertion didn't abort the test "
+                "as expected.";
+    }
+  }
+
+  // true if and only if the test function is expected to run to finish.
+  static bool expected_to_finish_;
+
+  // true if and only if the test function did run to finish.
+  static bool finished_;
+
+  static int n1_;
+  static int n2_;
+  static int n3_;
+  static int n4_;
+};
+
+bool Predicate4Test::expected_to_finish_;
+bool Predicate4Test::finished_;
+int Predicate4Test::n1_;
+int Predicate4Test::n2_;
+int Predicate4Test::n3_;
+int Predicate4Test::n4_;
+
+typedef Predicate4Test EXPECT_PRED_FORMAT4Test;
+typedef Predicate4Test ASSERT_PRED_FORMAT4Test;
+typedef Predicate4Test EXPECT_PRED4Test;
+typedef Predicate4Test ASSERT_PRED4Test;
+
+// Tests a successful EXPECT_PRED4 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED4Test, FunctionOnBuiltInTypeSuccess) {
+  EXPECT_PRED4(PredFunction4Int,
+               ++n1_,
+               ++n2_,
+               ++n3_,
+               ++n4_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED4 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED4Test, FunctionOnUserTypeSuccess) {
+  EXPECT_PRED4(PredFunction4Bool,
+               Bool(++n1_),
+               Bool(++n2_),
+               Bool(++n3_),
+               Bool(++n4_));
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED4 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED4Test, FunctorOnBuiltInTypeSuccess) {
+  EXPECT_PRED4(PredFunctor4(),
+               ++n1_,
+               ++n2_,
+               ++n3_,
+               ++n4_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED4 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED4Test, FunctorOnUserTypeSuccess) {
+  EXPECT_PRED4(PredFunctor4(),
+               Bool(++n1_),
+               Bool(++n2_),
+               Bool(++n3_),
+               Bool(++n4_));
+  finished_ = true;
+}
+
+// Tests a failed EXPECT_PRED4 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED4Test, FunctionOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED4(PredFunction4Int,
+                 n1_++,
+                 n2_++,
+                 n3_++,
+                 n4_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED4 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED4Test, FunctionOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED4(PredFunction4Bool,
+                 Bool(n1_++),
+                 Bool(n2_++),
+                 Bool(n3_++),
+                 Bool(n4_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED4 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED4Test, FunctorOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED4(PredFunctor4(),
+                 n1_++,
+                 n2_++,
+                 n3_++,
+                 n4_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED4 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED4Test, FunctorOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED4(PredFunctor4(),
+                 Bool(n1_++),
+                 Bool(n2_++),
+                 Bool(n3_++),
+                 Bool(n4_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful ASSERT_PRED4 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED4Test, FunctionOnBuiltInTypeSuccess) {
+  ASSERT_PRED4(PredFunction4Int,
+               ++n1_,
+               ++n2_,
+               ++n3_,
+               ++n4_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED4 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED4Test, FunctionOnUserTypeSuccess) {
+  ASSERT_PRED4(PredFunction4Bool,
+               Bool(++n1_),
+               Bool(++n2_),
+               Bool(++n3_),
+               Bool(++n4_));
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED4 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED4Test, FunctorOnBuiltInTypeSuccess) {
+  ASSERT_PRED4(PredFunctor4(),
+               ++n1_,
+               ++n2_,
+               ++n3_,
+               ++n4_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED4 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED4Test, FunctorOnUserTypeSuccess) {
+  ASSERT_PRED4(PredFunctor4(),
+               Bool(++n1_),
+               Bool(++n2_),
+               Bool(++n3_),
+               Bool(++n4_));
+  finished_ = true;
+}
+
+// Tests a failed ASSERT_PRED4 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED4Test, FunctionOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED4(PredFunction4Int,
+                 n1_++,
+                 n2_++,
+                 n3_++,
+                 n4_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED4 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED4Test, FunctionOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED4(PredFunction4Bool,
+                 Bool(n1_++),
+                 Bool(n2_++),
+                 Bool(n3_++),
+                 Bool(n4_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED4 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED4Test, FunctorOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED4(PredFunctor4(),
+                 n1_++,
+                 n2_++,
+                 n3_++,
+                 n4_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED4 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED4Test, FunctorOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED4(PredFunctor4(),
+                 Bool(n1_++),
+                 Bool(n2_++),
+                 Bool(n3_++),
+                 Bool(n4_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful EXPECT_PRED_FORMAT4 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT4Test, FunctionOnBuiltInTypeSuccess) {
+  EXPECT_PRED_FORMAT4(PredFormatFunction4,
+                      ++n1_,
+                      ++n2_,
+                      ++n3_,
+                      ++n4_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT4 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT4Test, FunctionOnUserTypeSuccess) {
+  EXPECT_PRED_FORMAT4(PredFormatFunction4,
+                      Bool(++n1_),
+                      Bool(++n2_),
+                      Bool(++n3_),
+                      Bool(++n4_));
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT4 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT4Test, FunctorOnBuiltInTypeSuccess) {
+  EXPECT_PRED_FORMAT4(PredFormatFunctor4(),
+                      ++n1_,
+                      ++n2_,
+                      ++n3_,
+                      ++n4_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT4 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT4Test, FunctorOnUserTypeSuccess) {
+  EXPECT_PRED_FORMAT4(PredFormatFunctor4(),
+                      Bool(++n1_),
+                      Bool(++n2_),
+                      Bool(++n3_),
+                      Bool(++n4_));
+  finished_ = true;
+}
+
+// Tests a failed EXPECT_PRED_FORMAT4 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT4Test, FunctionOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT4(PredFormatFunction4,
+                        n1_++,
+                        n2_++,
+                        n3_++,
+                        n4_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT4 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT4Test, FunctionOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT4(PredFormatFunction4,
+                        Bool(n1_++),
+                        Bool(n2_++),
+                        Bool(n3_++),
+                        Bool(n4_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT4 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT4Test, FunctorOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT4(PredFormatFunctor4(),
+                        n1_++,
+                        n2_++,
+                        n3_++,
+                        n4_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT4 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT4Test, FunctorOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT4(PredFormatFunctor4(),
+                        Bool(n1_++),
+                        Bool(n2_++),
+                        Bool(n3_++),
+                        Bool(n4_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful ASSERT_PRED_FORMAT4 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT4Test, FunctionOnBuiltInTypeSuccess) {
+  ASSERT_PRED_FORMAT4(PredFormatFunction4,
+                      ++n1_,
+                      ++n2_,
+                      ++n3_,
+                      ++n4_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT4 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT4Test, FunctionOnUserTypeSuccess) {
+  ASSERT_PRED_FORMAT4(PredFormatFunction4,
+                      Bool(++n1_),
+                      Bool(++n2_),
+                      Bool(++n3_),
+                      Bool(++n4_));
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT4 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT4Test, FunctorOnBuiltInTypeSuccess) {
+  ASSERT_PRED_FORMAT4(PredFormatFunctor4(),
+                      ++n1_,
+                      ++n2_,
+                      ++n3_,
+                      ++n4_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT4 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT4Test, FunctorOnUserTypeSuccess) {
+  ASSERT_PRED_FORMAT4(PredFormatFunctor4(),
+                      Bool(++n1_),
+                      Bool(++n2_),
+                      Bool(++n3_),
+                      Bool(++n4_));
+  finished_ = true;
+}
+
+// Tests a failed ASSERT_PRED_FORMAT4 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT4Test, FunctionOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT4(PredFormatFunction4,
+                        n1_++,
+                        n2_++,
+                        n3_++,
+                        n4_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT4 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT4Test, FunctionOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT4(PredFormatFunction4,
+                        Bool(n1_++),
+                        Bool(n2_++),
+                        Bool(n3_++),
+                        Bool(n4_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT4 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT4Test, FunctorOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT4(PredFormatFunctor4(),
+                        n1_++,
+                        n2_++,
+                        n3_++,
+                        n4_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT4 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT4Test, FunctorOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT4(PredFormatFunctor4(),
+                        Bool(n1_++),
+                        Bool(n2_++),
+                        Bool(n3_++),
+                        Bool(n4_++));
+    finished_ = true;
+  }, "");
+}
+// Sample functions/functors for testing 5-ary predicate assertions.
+
+// A 5-ary predicate function.
+template <typename T1, typename T2, typename T3, typename T4, typename T5>
+bool PredFunction5(T1 v1, T2 v2, T3 v3, T4 v4, T5 v5) {
+  return v1 + v2 + v3 + v4 + v5 > 0;
+}
+
+// The following two functions are needed to circumvent a bug in
+// gcc 2.95.3, which sometimes has problem with the above template
+// function.
+bool PredFunction5Int(int v1, int v2, int v3, int v4, int v5) {
+  return v1 + v2 + v3 + v4 + v5 > 0;
+}
+bool PredFunction5Bool(Bool v1, Bool v2, Bool v3, Bool v4, Bool v5) {
+  return v1 + v2 + v3 + v4 + v5 > 0;
+}
+
+// A 5-ary predicate functor.
+struct PredFunctor5 {
+  template <typename T1, typename T2, typename T3, typename T4, typename T5>
+  bool operator()(const T1& v1,
+                  const T2& v2,
+                  const T3& v3,
+                  const T4& v4,
+                  const T5& v5) {
+    return v1 + v2 + v3 + v4 + v5 > 0;
+  }
+};
+
+// A 5-ary predicate-formatter function.
+template <typename T1, typename T2, typename T3, typename T4, typename T5>
+testing::AssertionResult PredFormatFunction5(const char* e1,
+                                             const char* e2,
+                                             const char* e3,
+                                             const char* e4,
+                                             const char* e5,
+                                             const T1& v1,
+                                             const T2& v2,
+                                             const T3& v3,
+                                             const T4& v4,
+                                             const T5& v5) {
+  if (PredFunction5(v1, v2, v3, v4, v5))
+    return testing::AssertionSuccess();
+
+  return testing::AssertionFailure()
+      << e1 << " + " << e2 << " + " << e3 << " + " << e4 << " + " << e5
+      << " is expected to be positive, but evaluates to "
+      << v1 + v2 + v3 + v4 + v5 << ".";
+}
+
+// A 5-ary predicate-formatter functor.
+struct PredFormatFunctor5 {
+  template <typename T1, typename T2, typename T3, typename T4, typename T5>
+  testing::AssertionResult operator()(const char* e1,
+                                      const char* e2,
+                                      const char* e3,
+                                      const char* e4,
+                                      const char* e5,
+                                      const T1& v1,
+                                      const T2& v2,
+                                      const T3& v3,
+                                      const T4& v4,
+                                      const T5& v5) const {
+    return PredFormatFunction5(e1, e2, e3, e4, e5, v1, v2, v3, v4, v5);
+  }
+};
+
+// Tests for {EXPECT|ASSERT}_PRED_FORMAT5.
+
+class Predicate5Test : public testing::Test {
+ protected:
+  void SetUp() override {
+    expected_to_finish_ = true;
+    finished_ = false;
+    n1_ = n2_ = n3_ = n4_ = n5_ = 0;
+  }
+
+  void TearDown() override {
+    // Verifies that each of the predicate's arguments was evaluated
+    // exactly once.
+    EXPECT_EQ(1, n1_) <<
+        "The predicate assertion didn't evaluate argument 2 "
+        "exactly once.";
+    EXPECT_EQ(1, n2_) <<
+        "The predicate assertion didn't evaluate argument 3 "
+        "exactly once.";
+    EXPECT_EQ(1, n3_) <<
+        "The predicate assertion didn't evaluate argument 4 "
+        "exactly once.";
+    EXPECT_EQ(1, n4_) <<
+        "The predicate assertion didn't evaluate argument 5 "
+        "exactly once.";
+    EXPECT_EQ(1, n5_) <<
+        "The predicate assertion didn't evaluate argument 6 "
+        "exactly once.";
+
+    // Verifies that the control flow in the test function is expected.
+    if (expected_to_finish_ && !finished_) {
+      FAIL() << "The predicate assertion unexpactedly aborted the test.";
+    } else if (!expected_to_finish_ && finished_) {
+      FAIL() << "The failed predicate assertion didn't abort the test "
+                "as expected.";
+    }
+  }
+
+  // true if and only if the test function is expected to run to finish.
+  static bool expected_to_finish_;
+
+  // true if and only if the test function did run to finish.
+  static bool finished_;
+
+  static int n1_;
+  static int n2_;
+  static int n3_;
+  static int n4_;
+  static int n5_;
+};
+
+bool Predicate5Test::expected_to_finish_;
+bool Predicate5Test::finished_;
+int Predicate5Test::n1_;
+int Predicate5Test::n2_;
+int Predicate5Test::n3_;
+int Predicate5Test::n4_;
+int Predicate5Test::n5_;
+
+typedef Predicate5Test EXPECT_PRED_FORMAT5Test;
+typedef Predicate5Test ASSERT_PRED_FORMAT5Test;
+typedef Predicate5Test EXPECT_PRED5Test;
+typedef Predicate5Test ASSERT_PRED5Test;
+
+// Tests a successful EXPECT_PRED5 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED5Test, FunctionOnBuiltInTypeSuccess) {
+  EXPECT_PRED5(PredFunction5Int,
+               ++n1_,
+               ++n2_,
+               ++n3_,
+               ++n4_,
+               ++n5_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED5 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED5Test, FunctionOnUserTypeSuccess) {
+  EXPECT_PRED5(PredFunction5Bool,
+               Bool(++n1_),
+               Bool(++n2_),
+               Bool(++n3_),
+               Bool(++n4_),
+               Bool(++n5_));
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED5 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED5Test, FunctorOnBuiltInTypeSuccess) {
+  EXPECT_PRED5(PredFunctor5(),
+               ++n1_,
+               ++n2_,
+               ++n3_,
+               ++n4_,
+               ++n5_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED5 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED5Test, FunctorOnUserTypeSuccess) {
+  EXPECT_PRED5(PredFunctor5(),
+               Bool(++n1_),
+               Bool(++n2_),
+               Bool(++n3_),
+               Bool(++n4_),
+               Bool(++n5_));
+  finished_ = true;
+}
+
+// Tests a failed EXPECT_PRED5 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED5Test, FunctionOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED5(PredFunction5Int,
+                 n1_++,
+                 n2_++,
+                 n3_++,
+                 n4_++,
+                 n5_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED5 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED5Test, FunctionOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED5(PredFunction5Bool,
+                 Bool(n1_++),
+                 Bool(n2_++),
+                 Bool(n3_++),
+                 Bool(n4_++),
+                 Bool(n5_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED5 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED5Test, FunctorOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED5(PredFunctor5(),
+                 n1_++,
+                 n2_++,
+                 n3_++,
+                 n4_++,
+                 n5_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED5 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED5Test, FunctorOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED5(PredFunctor5(),
+                 Bool(n1_++),
+                 Bool(n2_++),
+                 Bool(n3_++),
+                 Bool(n4_++),
+                 Bool(n5_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful ASSERT_PRED5 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED5Test, FunctionOnBuiltInTypeSuccess) {
+  ASSERT_PRED5(PredFunction5Int,
+               ++n1_,
+               ++n2_,
+               ++n3_,
+               ++n4_,
+               ++n5_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED5 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED5Test, FunctionOnUserTypeSuccess) {
+  ASSERT_PRED5(PredFunction5Bool,
+               Bool(++n1_),
+               Bool(++n2_),
+               Bool(++n3_),
+               Bool(++n4_),
+               Bool(++n5_));
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED5 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED5Test, FunctorOnBuiltInTypeSuccess) {
+  ASSERT_PRED5(PredFunctor5(),
+               ++n1_,
+               ++n2_,
+               ++n3_,
+               ++n4_,
+               ++n5_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED5 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED5Test, FunctorOnUserTypeSuccess) {
+  ASSERT_PRED5(PredFunctor5(),
+               Bool(++n1_),
+               Bool(++n2_),
+               Bool(++n3_),
+               Bool(++n4_),
+               Bool(++n5_));
+  finished_ = true;
+}
+
+// Tests a failed ASSERT_PRED5 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED5Test, FunctionOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED5(PredFunction5Int,
+                 n1_++,
+                 n2_++,
+                 n3_++,
+                 n4_++,
+                 n5_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED5 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED5Test, FunctionOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED5(PredFunction5Bool,
+                 Bool(n1_++),
+                 Bool(n2_++),
+                 Bool(n3_++),
+                 Bool(n4_++),
+                 Bool(n5_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED5 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED5Test, FunctorOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED5(PredFunctor5(),
+                 n1_++,
+                 n2_++,
+                 n3_++,
+                 n4_++,
+                 n5_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED5 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED5Test, FunctorOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED5(PredFunctor5(),
+                 Bool(n1_++),
+                 Bool(n2_++),
+                 Bool(n3_++),
+                 Bool(n4_++),
+                 Bool(n5_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful EXPECT_PRED_FORMAT5 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT5Test, FunctionOnBuiltInTypeSuccess) {
+  EXPECT_PRED_FORMAT5(PredFormatFunction5,
+                      ++n1_,
+                      ++n2_,
+                      ++n3_,
+                      ++n4_,
+                      ++n5_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT5 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT5Test, FunctionOnUserTypeSuccess) {
+  EXPECT_PRED_FORMAT5(PredFormatFunction5,
+                      Bool(++n1_),
+                      Bool(++n2_),
+                      Bool(++n3_),
+                      Bool(++n4_),
+                      Bool(++n5_));
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT5 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT5Test, FunctorOnBuiltInTypeSuccess) {
+  EXPECT_PRED_FORMAT5(PredFormatFunctor5(),
+                      ++n1_,
+                      ++n2_,
+                      ++n3_,
+                      ++n4_,
+                      ++n5_);
+  finished_ = true;
+}
+
+// Tests a successful EXPECT_PRED_FORMAT5 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT5Test, FunctorOnUserTypeSuccess) {
+  EXPECT_PRED_FORMAT5(PredFormatFunctor5(),
+                      Bool(++n1_),
+                      Bool(++n2_),
+                      Bool(++n3_),
+                      Bool(++n4_),
+                      Bool(++n5_));
+  finished_ = true;
+}
+
+// Tests a failed EXPECT_PRED_FORMAT5 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT5Test, FunctionOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT5(PredFormatFunction5,
+                        n1_++,
+                        n2_++,
+                        n3_++,
+                        n4_++,
+                        n5_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT5 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT5Test, FunctionOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT5(PredFormatFunction5,
+                        Bool(n1_++),
+                        Bool(n2_++),
+                        Bool(n3_++),
+                        Bool(n4_++),
+                        Bool(n5_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT5 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(EXPECT_PRED_FORMAT5Test, FunctorOnBuiltInTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT5(PredFormatFunctor5(),
+                        n1_++,
+                        n2_++,
+                        n3_++,
+                        n4_++,
+                        n5_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed EXPECT_PRED_FORMAT5 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(EXPECT_PRED_FORMAT5Test, FunctorOnUserTypeFailure) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT5(PredFormatFunctor5(),
+                        Bool(n1_++),
+                        Bool(n2_++),
+                        Bool(n3_++),
+                        Bool(n4_++),
+                        Bool(n5_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a successful ASSERT_PRED_FORMAT5 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT5Test, FunctionOnBuiltInTypeSuccess) {
+  ASSERT_PRED_FORMAT5(PredFormatFunction5,
+                      ++n1_,
+                      ++n2_,
+                      ++n3_,
+                      ++n4_,
+                      ++n5_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT5 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT5Test, FunctionOnUserTypeSuccess) {
+  ASSERT_PRED_FORMAT5(PredFormatFunction5,
+                      Bool(++n1_),
+                      Bool(++n2_),
+                      Bool(++n3_),
+                      Bool(++n4_),
+                      Bool(++n5_));
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT5 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT5Test, FunctorOnBuiltInTypeSuccess) {
+  ASSERT_PRED_FORMAT5(PredFormatFunctor5(),
+                      ++n1_,
+                      ++n2_,
+                      ++n3_,
+                      ++n4_,
+                      ++n5_);
+  finished_ = true;
+}
+
+// Tests a successful ASSERT_PRED_FORMAT5 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT5Test, FunctorOnUserTypeSuccess) {
+  ASSERT_PRED_FORMAT5(PredFormatFunctor5(),
+                      Bool(++n1_),
+                      Bool(++n2_),
+                      Bool(++n3_),
+                      Bool(++n4_),
+                      Bool(++n5_));
+  finished_ = true;
+}
+
+// Tests a failed ASSERT_PRED_FORMAT5 where the
+// predicate-formatter is a function on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT5Test, FunctionOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT5(PredFormatFunction5,
+                        n1_++,
+                        n2_++,
+                        n3_++,
+                        n4_++,
+                        n5_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT5 where the
+// predicate-formatter is a function on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT5Test, FunctionOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT5(PredFormatFunction5,
+                        Bool(n1_++),
+                        Bool(n2_++),
+                        Bool(n3_++),
+                        Bool(n4_++),
+                        Bool(n5_++));
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT5 where the
+// predicate-formatter is a functor on a built-in type (int).
+TEST_F(ASSERT_PRED_FORMAT5Test, FunctorOnBuiltInTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT5(PredFormatFunctor5(),
+                        n1_++,
+                        n2_++,
+                        n3_++,
+                        n4_++,
+                        n5_++);
+    finished_ = true;
+  }, "");
+}
+
+// Tests a failed ASSERT_PRED_FORMAT5 where the
+// predicate-formatter is a functor on a user-defined type (Bool).
+TEST_F(ASSERT_PRED_FORMAT5Test, FunctorOnUserTypeFailure) {
+  expected_to_finish_ = false;
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT5(PredFormatFunctor5(),
+                        Bool(n1_++),
+                        Bool(n2_++),
+                        Bool(n3_++),
+                        Bool(n4_++),
+                        Bool(n5_++));
+    finished_ = true;
+  }, "");
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_premature_exit_test.cc b/build/_deps/googletest-src/googletest/test/gtest_premature_exit_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1d1187eff006cc88750ef957829d580ac690350b
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_premature_exit_test.cc
@@ -0,0 +1,126 @@
+// Copyright 2013, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Tests that Google Test manipulates the premature-exit-detection
+// file correctly.
+
+#include <stdio.h>
+
+#include "gtest/gtest.h"
+
+using ::testing::InitGoogleTest;
+using ::testing::Test;
+using ::testing::internal::posix::GetEnv;
+using ::testing::internal::posix::Stat;
+using ::testing::internal::posix::StatStruct;
+
+namespace {
+
+class PrematureExitTest : public Test {
+ public:
+  // Returns true if and only if the given file exists.
+  static bool FileExists(const char* filepath) {
+    StatStruct stat;
+    return Stat(filepath, &stat) == 0;
+  }
+
+ protected:
+  PrematureExitTest() {
+    premature_exit_file_path_ = GetEnv("TEST_PREMATURE_EXIT_FILE");
+
+    // Normalize NULL to "" for ease of handling.
+    if (premature_exit_file_path_ == nullptr) {
+      premature_exit_file_path_ = "";
+    }
+  }
+
+  // Returns true if and only if the premature-exit file exists.
+  bool PrematureExitFileExists() const {
+    return FileExists(premature_exit_file_path_);
+  }
+
+  const char* premature_exit_file_path_;
+};
+
+typedef PrematureExitTest PrematureExitDeathTest;
+
+// Tests that:
+//   - the premature-exit file exists during the execution of a
+//     death test (EXPECT_DEATH*), and
+//   - a death test doesn't interfere with the main test process's
+//     handling of the premature-exit file.
+TEST_F(PrematureExitDeathTest, FileExistsDuringExecutionOfDeathTest) {
+  if (*premature_exit_file_path_ == '\0') {
+    return;
+  }
+
+  EXPECT_DEATH_IF_SUPPORTED({
+      // If the file exists, crash the process such that the main test
+      // process will catch the (expected) crash and report a success;
+      // otherwise don't crash, which will cause the main test process
+      // to report that the death test has failed.
+      if (PrematureExitFileExists()) {
+        exit(1);
+      }
+    }, "");
+}
+
+// Tests that the premature-exit file exists during the execution of a
+// normal (non-death) test.
+TEST_F(PrematureExitTest, PrematureExitFileExistsDuringTestExecution) {
+  if (*premature_exit_file_path_ == '\0') {
+    return;
+  }
+
+  EXPECT_TRUE(PrematureExitFileExists())
+      << " file " << premature_exit_file_path_
+      << " should exist during test execution, but doesn't.";
+}
+
+}  // namespace
+
+int main(int argc, char **argv) {
+  InitGoogleTest(&argc, argv);
+  const int exit_code = RUN_ALL_TESTS();
+
+  // Test that the premature-exit file is deleted upon return from
+  // RUN_ALL_TESTS().
+  const char* const filepath = GetEnv("TEST_PREMATURE_EXIT_FILE");
+  if (filepath != nullptr && *filepath != '\0') {
+    if (PrematureExitTest::FileExists(filepath)) {
+      printf(
+          "File %s shouldn't exist after the test program finishes, but does.",
+          filepath);
+      return 1;
+    }
+  }
+
+  return exit_code;
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_prod_test.cc b/build/_deps/googletest-src/googletest/test/gtest_prod_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ede81a0d17a02c853ed2234ec88fe8277180a37e
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_prod_test.cc
@@ -0,0 +1,56 @@
+// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Unit test for gtest_prod.h.
+
+#include "production.h"
+#include "gtest/gtest.h"
+
+// Tests that private members can be accessed from a TEST declared as
+// a friend of the class.
+TEST(PrivateCodeTest, CanAccessPrivateMembers) {
+  PrivateCode a;
+  EXPECT_EQ(0, a.x_);
+
+  a.set_x(1);
+  EXPECT_EQ(1, a.x_);
+}
+
+typedef testing::Test PrivateCodeFixtureTest;
+
+// Tests that private members can be accessed from a TEST_F declared
+// as a friend of the class.
+TEST_F(PrivateCodeFixtureTest, CanAccessPrivateMembers) {
+  PrivateCode a;
+  EXPECT_EQ(0, a.x_);
+
+  a.set_x(2);
+  EXPECT_EQ(2, a.x_);
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_repeat_test.cc b/build/_deps/googletest-src/googletest/test/gtest_repeat_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7da4a15ea141989f86426a572bac0a58b33f76ba
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_repeat_test.cc
@@ -0,0 +1,233 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Tests the --gtest_repeat=number flag.
+
+#include <stdlib.h>
+#include <iostream>
+#include "gtest/gtest.h"
+#include "src/gtest-internal-inl.h"
+
+namespace testing {
+
+GTEST_DECLARE_string_(death_test_style);
+GTEST_DECLARE_string_(filter);
+GTEST_DECLARE_int32_(repeat);
+
+}  // namespace testing
+
+using testing::GTEST_FLAG(death_test_style);
+using testing::GTEST_FLAG(filter);
+using testing::GTEST_FLAG(repeat);
+
+namespace {
+
+// We need this when we are testing Google Test itself and therefore
+// cannot use Google Test assertions.
+#define GTEST_CHECK_INT_EQ_(expected, actual) \
+  do {\
+    const int expected_val = (expected);\
+    const int actual_val = (actual);\
+    if (::testing::internal::IsTrue(expected_val != actual_val)) {\
+      ::std::cout << "Value of: " #actual "\n"\
+                  << "  Actual: " << actual_val << "\n"\
+                  << "Expected: " #expected "\n"\
+                  << "Which is: " << expected_val << "\n";\
+      ::testing::internal::posix::Abort();\
+    }\
+  } while (::testing::internal::AlwaysFalse())
+
+
+// Used for verifying that global environment set-up and tear-down are
+// inside the --gtest_repeat loop.
+
+int g_environment_set_up_count = 0;
+int g_environment_tear_down_count = 0;
+
+class MyEnvironment : public testing::Environment {
+ public:
+  MyEnvironment() {}
+  void SetUp() override { g_environment_set_up_count++; }
+  void TearDown() override { g_environment_tear_down_count++; }
+};
+
+// A test that should fail.
+
+int g_should_fail_count = 0;
+
+TEST(FooTest, ShouldFail) {
+  g_should_fail_count++;
+  EXPECT_EQ(0, 1) << "Expected failure.";
+}
+
+// A test that should pass.
+
+int g_should_pass_count = 0;
+
+TEST(FooTest, ShouldPass) {
+  g_should_pass_count++;
+}
+
+// A test that contains a thread-safe death test and a fast death
+// test.  It should pass.
+
+int g_death_test_count = 0;
+
+TEST(BarDeathTest, ThreadSafeAndFast) {
+  g_death_test_count++;
+
+  GTEST_FLAG(death_test_style) = "threadsafe";
+  EXPECT_DEATH_IF_SUPPORTED(::testing::internal::posix::Abort(), "");
+
+  GTEST_FLAG(death_test_style) = "fast";
+  EXPECT_DEATH_IF_SUPPORTED(::testing::internal::posix::Abort(), "");
+}
+
+int g_param_test_count = 0;
+
+const int kNumberOfParamTests = 10;
+
+class MyParamTest : public testing::TestWithParam<int> {};
+
+TEST_P(MyParamTest, ShouldPass) {
+  GTEST_CHECK_INT_EQ_(g_param_test_count % kNumberOfParamTests, GetParam());
+  g_param_test_count++;
+}
+INSTANTIATE_TEST_SUITE_P(MyParamSequence,
+                         MyParamTest,
+                         testing::Range(0, kNumberOfParamTests));
+
+// Resets the count for each test.
+void ResetCounts() {
+  g_environment_set_up_count = 0;
+  g_environment_tear_down_count = 0;
+  g_should_fail_count = 0;
+  g_should_pass_count = 0;
+  g_death_test_count = 0;
+  g_param_test_count = 0;
+}
+
+// Checks that the count for each test is expected.
+void CheckCounts(int expected) {
+  GTEST_CHECK_INT_EQ_(expected, g_environment_set_up_count);
+  GTEST_CHECK_INT_EQ_(expected, g_environment_tear_down_count);
+  GTEST_CHECK_INT_EQ_(expected, g_should_fail_count);
+  GTEST_CHECK_INT_EQ_(expected, g_should_pass_count);
+  GTEST_CHECK_INT_EQ_(expected, g_death_test_count);
+  GTEST_CHECK_INT_EQ_(expected * kNumberOfParamTests, g_param_test_count);
+}
+
+// Tests the behavior of Google Test when --gtest_repeat is not specified.
+void TestRepeatUnspecified() {
+  ResetCounts();
+  GTEST_CHECK_INT_EQ_(1, RUN_ALL_TESTS());
+  CheckCounts(1);
+}
+
+// Tests the behavior of Google Test when --gtest_repeat has the given value.
+void TestRepeat(int repeat) {
+  GTEST_FLAG(repeat) = repeat;
+
+  ResetCounts();
+  GTEST_CHECK_INT_EQ_(repeat > 0 ? 1 : 0, RUN_ALL_TESTS());
+  CheckCounts(repeat);
+}
+
+// Tests using --gtest_repeat when --gtest_filter specifies an empty
+// set of tests.
+void TestRepeatWithEmptyFilter(int repeat) {
+  GTEST_FLAG(repeat) = repeat;
+  GTEST_FLAG(filter) = "None";
+
+  ResetCounts();
+  GTEST_CHECK_INT_EQ_(0, RUN_ALL_TESTS());
+  CheckCounts(0);
+}
+
+// Tests using --gtest_repeat when --gtest_filter specifies a set of
+// successful tests.
+void TestRepeatWithFilterForSuccessfulTests(int repeat) {
+  GTEST_FLAG(repeat) = repeat;
+  GTEST_FLAG(filter) = "*-*ShouldFail";
+
+  ResetCounts();
+  GTEST_CHECK_INT_EQ_(0, RUN_ALL_TESTS());
+  GTEST_CHECK_INT_EQ_(repeat, g_environment_set_up_count);
+  GTEST_CHECK_INT_EQ_(repeat, g_environment_tear_down_count);
+  GTEST_CHECK_INT_EQ_(0, g_should_fail_count);
+  GTEST_CHECK_INT_EQ_(repeat, g_should_pass_count);
+  GTEST_CHECK_INT_EQ_(repeat, g_death_test_count);
+  GTEST_CHECK_INT_EQ_(repeat * kNumberOfParamTests, g_param_test_count);
+}
+
+// Tests using --gtest_repeat when --gtest_filter specifies a set of
+// failed tests.
+void TestRepeatWithFilterForFailedTests(int repeat) {
+  GTEST_FLAG(repeat) = repeat;
+  GTEST_FLAG(filter) = "*ShouldFail";
+
+  ResetCounts();
+  GTEST_CHECK_INT_EQ_(1, RUN_ALL_TESTS());
+  GTEST_CHECK_INT_EQ_(repeat, g_environment_set_up_count);
+  GTEST_CHECK_INT_EQ_(repeat, g_environment_tear_down_count);
+  GTEST_CHECK_INT_EQ_(repeat, g_should_fail_count);
+  GTEST_CHECK_INT_EQ_(0, g_should_pass_count);
+  GTEST_CHECK_INT_EQ_(0, g_death_test_count);
+  GTEST_CHECK_INT_EQ_(0, g_param_test_count);
+}
+
+}  // namespace
+
+int main(int argc, char **argv) {
+  testing::InitGoogleTest(&argc, argv);
+
+  testing::AddGlobalTestEnvironment(new MyEnvironment);
+
+  TestRepeatUnspecified();
+  TestRepeat(0);
+  TestRepeat(1);
+  TestRepeat(5);
+
+  TestRepeatWithEmptyFilter(2);
+  TestRepeatWithEmptyFilter(3);
+
+  TestRepeatWithFilterForSuccessfulTests(3);
+
+  TestRepeatWithFilterForFailedTests(4);
+
+  // It would be nice to verify that the tests indeed loop forever
+  // when GTEST_FLAG(repeat) is negative, but this test will be quite
+  // complicated to write.  Since this flag is for interactive
+  // debugging only and doesn't affect the normal test result, such a
+  // test would be an overkill.
+
+  printf("PASS\n");
+  return 0;
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_skip_environment_check_output_test.py b/build/_deps/googletest-src/googletest/test/gtest_skip_environment_check_output_test.py
new file mode 100755
index 0000000000000000000000000000000000000000..6e791556aa71e5623a357af822713b4df2176403
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_skip_environment_check_output_test.py
@@ -0,0 +1,54 @@
+#!/usr/bin/env python
+#
+# Copyright 2019 Google LLC.  All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+"""Tests Google Test's gtest skip in environment setup  behavior.
+
+This script invokes gtest_skip_in_environment_setup_test_ and verifies its
+output.
+"""
+
+import gtest_test_utils
+
+# Path to the gtest_skip_in_environment_setup_test binary
+EXE_PATH = gtest_test_utils.GetTestExecutablePath(
+    'gtest_skip_in_environment_setup_test')
+
+OUTPUT = gtest_test_utils.Subprocess([EXE_PATH]).output
+
+
+# Test.
+class SkipEntireEnvironmentTest(gtest_test_utils.TestCase):
+
+  def testSkipEntireEnvironmentTest(self):
+    self.assertIn('Skipping the entire environment', OUTPUT)
+    self.assertNotIn('FAILED', OUTPUT)
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/gtest_skip_in_environment_setup_test.cc b/build/_deps/googletest-src/googletest/test/gtest_skip_in_environment_setup_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..937231063816e047acdd2fb416da80e4986438be
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_skip_in_environment_setup_test.cc
@@ -0,0 +1,49 @@
+// Copyright 2019, Google LLC.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google LLC. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// This test verifies that skipping in the environment results in the
+// testcases being skipped.
+
+#include <iostream>
+#include "gtest/gtest.h"
+
+class SetupEnvironment : public testing::Environment {
+ public:
+  void SetUp() override { GTEST_SKIP() << "Skipping the entire environment"; }
+};
+
+TEST(Test, AlwaysFails) { EXPECT_EQ(true, false); }
+
+int main(int argc, char **argv) {
+  testing::InitGoogleTest(&argc, argv);
+
+  testing::AddGlobalTestEnvironment(new SetupEnvironment());
+
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_skip_test.cc b/build/_deps/googletest-src/googletest/test/gtest_skip_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..717e105e2e073e4b11cd3c17bc21018001861406
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_skip_test.cc
@@ -0,0 +1,55 @@
+// Copyright 2008 Google Inc.
+// All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Author: arseny.aprelev@gmail.com (Arseny Aprelev)
+//
+
+#include "gtest/gtest.h"
+
+using ::testing::Test;
+
+TEST(SkipTest, DoesSkip) {
+  GTEST_SKIP();
+  EXPECT_EQ(0, 1);
+}
+
+class Fixture : public Test {
+ protected:
+  void SetUp() override {
+    GTEST_SKIP() << "skipping all tests for this fixture";
+  }
+};
+
+TEST_F(Fixture, SkipsOneTest) {
+  EXPECT_EQ(5, 7);
+}
+
+TEST_F(Fixture, SkipsAnotherTest) {
+  EXPECT_EQ(99, 100);
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_sole_header_test.cc b/build/_deps/googletest-src/googletest/test/gtest_sole_header_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1d94ac6b3ad9f9f7dbadbfb2bf749b8271560dac
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_sole_header_test.cc
@@ -0,0 +1,56 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// This test verifies that it's possible to use Google Test by including
+// the gtest.h header file alone.
+
+#include "gtest/gtest.h"
+
+namespace {
+
+void Subroutine() {
+  EXPECT_EQ(42, 42);
+}
+
+TEST(NoFatalFailureTest, ExpectNoFatalFailure) {
+  EXPECT_NO_FATAL_FAILURE(;);
+  EXPECT_NO_FATAL_FAILURE(SUCCEED());
+  EXPECT_NO_FATAL_FAILURE(Subroutine());
+  EXPECT_NO_FATAL_FAILURE({ SUCCEED(); });
+}
+
+TEST(NoFatalFailureTest, AssertNoFatalFailure) {
+  ASSERT_NO_FATAL_FAILURE(;);
+  ASSERT_NO_FATAL_FAILURE(SUCCEED());
+  ASSERT_NO_FATAL_FAILURE(Subroutine());
+  ASSERT_NO_FATAL_FAILURE({ SUCCEED(); });
+}
+
+}  // namespace
diff --git a/build/_deps/googletest-src/googletest/test/gtest_stress_test.cc b/build/_deps/googletest-src/googletest/test/gtest_stress_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..843481910f03f6989773c586b8e11eddbd6034cb
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_stress_test.cc
@@ -0,0 +1,248 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Tests that SCOPED_TRACE() and various Google Test assertions can be
+// used in a large number of threads concurrently.
+
+#include "gtest/gtest.h"
+
+#include <vector>
+
+#include "src/gtest-internal-inl.h"
+
+#if GTEST_IS_THREADSAFE
+
+namespace testing {
+namespace {
+
+using internal::Notification;
+using internal::TestPropertyKeyIs;
+using internal::ThreadWithParam;
+
+// In order to run tests in this file, for platforms where Google Test is
+// thread safe, implement ThreadWithParam. See the description of its API
+// in gtest-port.h, where it is defined for already supported platforms.
+
+// How many threads to create?
+const int kThreadCount = 50;
+
+std::string IdToKey(int id, const char* suffix) {
+  Message key;
+  key << "key_" << id << "_" << suffix;
+  return key.GetString();
+}
+
+std::string IdToString(int id) {
+  Message id_message;
+  id_message << id;
+  return id_message.GetString();
+}
+
+void ExpectKeyAndValueWereRecordedForId(
+    const std::vector<TestProperty>& properties,
+    int id, const char* suffix) {
+  TestPropertyKeyIs matches_key(IdToKey(id, suffix).c_str());
+  const std::vector<TestProperty>::const_iterator property =
+      std::find_if(properties.begin(), properties.end(), matches_key);
+  ASSERT_TRUE(property != properties.end())
+      << "expecting " << suffix << " value for id " << id;
+  EXPECT_STREQ(IdToString(id).c_str(), property->value());
+}
+
+// Calls a large number of Google Test assertions, where exactly one of them
+// will fail.
+void ManyAsserts(int id) {
+  GTEST_LOG_(INFO) << "Thread #" << id << " running...";
+
+  SCOPED_TRACE(Message() << "Thread #" << id);
+
+  for (int i = 0; i < kThreadCount; i++) {
+    SCOPED_TRACE(Message() << "Iteration #" << i);
+
+    // A bunch of assertions that should succeed.
+    EXPECT_TRUE(true);
+    ASSERT_FALSE(false) << "This shouldn't fail.";
+    EXPECT_STREQ("a", "a");
+    ASSERT_LE(5, 6);
+    EXPECT_EQ(i, i) << "This shouldn't fail.";
+
+    // RecordProperty() should interact safely with other threads as well.
+    // The shared_key forces property updates.
+    Test::RecordProperty(IdToKey(id, "string").c_str(), IdToString(id).c_str());
+    Test::RecordProperty(IdToKey(id, "int").c_str(), id);
+    Test::RecordProperty("shared_key", IdToString(id).c_str());
+
+    // This assertion should fail kThreadCount times per thread.  It
+    // is for testing whether Google Test can handle failed assertions in a
+    // multi-threaded context.
+    EXPECT_LT(i, 0) << "This should always fail.";
+  }
+}
+
+void CheckTestFailureCount(int expected_failures) {
+  const TestInfo* const info = UnitTest::GetInstance()->current_test_info();
+  const TestResult* const result = info->result();
+  GTEST_CHECK_(expected_failures == result->total_part_count())
+      << "Logged " << result->total_part_count() << " failures "
+      << " vs. " << expected_failures << " expected";
+}
+
+// Tests using SCOPED_TRACE() and Google Test assertions in many threads
+// concurrently.
+TEST(StressTest, CanUseScopedTraceAndAssertionsInManyThreads) {
+  {
+    std::unique_ptr<ThreadWithParam<int> > threads[kThreadCount];
+    Notification threads_can_start;
+    for (int i = 0; i != kThreadCount; i++)
+      threads[i].reset(new ThreadWithParam<int>(&ManyAsserts,
+                                                i,
+                                                &threads_can_start));
+
+    threads_can_start.Notify();
+
+    // Blocks until all the threads are done.
+    for (int i = 0; i != kThreadCount; i++)
+      threads[i]->Join();
+  }
+
+  // Ensures that kThreadCount*kThreadCount failures have been reported.
+  const TestInfo* const info = UnitTest::GetInstance()->current_test_info();
+  const TestResult* const result = info->result();
+
+  std::vector<TestProperty> properties;
+  // We have no access to the TestResult's list of properties but we can
+  // copy them one by one.
+  for (int i = 0; i < result->test_property_count(); ++i)
+    properties.push_back(result->GetTestProperty(i));
+
+  EXPECT_EQ(kThreadCount * 2 + 1, result->test_property_count())
+      << "String and int values recorded on each thread, "
+      << "as well as one shared_key";
+  for (int i = 0; i < kThreadCount; ++i) {
+    ExpectKeyAndValueWereRecordedForId(properties, i, "string");
+    ExpectKeyAndValueWereRecordedForId(properties, i, "int");
+  }
+  CheckTestFailureCount(kThreadCount*kThreadCount);
+}
+
+void FailingThread(bool is_fatal) {
+  if (is_fatal)
+    FAIL() << "Fatal failure in some other thread. "
+           << "(This failure is expected.)";
+  else
+    ADD_FAILURE() << "Non-fatal failure in some other thread. "
+                  << "(This failure is expected.)";
+}
+
+void GenerateFatalFailureInAnotherThread(bool is_fatal) {
+  ThreadWithParam<bool> thread(&FailingThread, is_fatal, nullptr);
+  thread.Join();
+}
+
+TEST(NoFatalFailureTest, ExpectNoFatalFailureIgnoresFailuresInOtherThreads) {
+  EXPECT_NO_FATAL_FAILURE(GenerateFatalFailureInAnotherThread(true));
+  // We should only have one failure (the one from
+  // GenerateFatalFailureInAnotherThread()), since the EXPECT_NO_FATAL_FAILURE
+  // should succeed.
+  CheckTestFailureCount(1);
+}
+
+void AssertNoFatalFailureIgnoresFailuresInOtherThreads() {
+  ASSERT_NO_FATAL_FAILURE(GenerateFatalFailureInAnotherThread(true));
+}
+TEST(NoFatalFailureTest, AssertNoFatalFailureIgnoresFailuresInOtherThreads) {
+  // Using a subroutine, to make sure, that the test continues.
+  AssertNoFatalFailureIgnoresFailuresInOtherThreads();
+  // We should only have one failure (the one from
+  // GenerateFatalFailureInAnotherThread()), since the EXPECT_NO_FATAL_FAILURE
+  // should succeed.
+  CheckTestFailureCount(1);
+}
+
+TEST(FatalFailureTest, ExpectFatalFailureIgnoresFailuresInOtherThreads) {
+  // This statement should fail, since the current thread doesn't generate a
+  // fatal failure, only another one does.
+  EXPECT_FATAL_FAILURE(GenerateFatalFailureInAnotherThread(true), "expected");
+  CheckTestFailureCount(2);
+}
+
+TEST(FatalFailureOnAllThreadsTest, ExpectFatalFailureOnAllThreads) {
+  // This statement should succeed, because failures in all threads are
+  // considered.
+  EXPECT_FATAL_FAILURE_ON_ALL_THREADS(
+      GenerateFatalFailureInAnotherThread(true), "expected");
+  CheckTestFailureCount(0);
+  // We need to add a failure, because main() checks that there are failures.
+  // But when only this test is run, we shouldn't have any failures.
+  ADD_FAILURE() << "This is an expected non-fatal failure.";
+}
+
+TEST(NonFatalFailureTest, ExpectNonFatalFailureIgnoresFailuresInOtherThreads) {
+  // This statement should fail, since the current thread doesn't generate a
+  // fatal failure, only another one does.
+  EXPECT_NONFATAL_FAILURE(GenerateFatalFailureInAnotherThread(false),
+                          "expected");
+  CheckTestFailureCount(2);
+}
+
+TEST(NonFatalFailureOnAllThreadsTest, ExpectNonFatalFailureOnAllThreads) {
+  // This statement should succeed, because failures in all threads are
+  // considered.
+  EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(
+      GenerateFatalFailureInAnotherThread(false), "expected");
+  CheckTestFailureCount(0);
+  // We need to add a failure, because main() checks that there are failures,
+  // But when only this test is run, we shouldn't have any failures.
+  ADD_FAILURE() << "This is an expected non-fatal failure.";
+}
+
+}  // namespace
+}  // namespace testing
+
+int main(int argc, char **argv) {
+  testing::InitGoogleTest(&argc, argv);
+
+  const int result = RUN_ALL_TESTS();  // Expected to fail.
+  GTEST_CHECK_(result == 1) << "RUN_ALL_TESTS() did not fail as expected";
+
+  printf("\nPASS\n");
+  return 0;
+}
+
+#else
+TEST(StressTest,
+     DISABLED_ThreadSafetyTestsAreSkippedWhenGoogleTestIsNotThreadSafe) {
+}
+
+int main(int argc, char **argv) {
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
+#endif  // GTEST_IS_THREADSAFE
diff --git a/build/_deps/googletest-src/googletest/test/gtest_test_macro_stack_footprint_test.cc b/build/_deps/googletest-src/googletest/test/gtest_test_macro_stack_footprint_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a48db05012cc30e0edf4a1354ff392c92d000bf0
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_test_macro_stack_footprint_test.cc
@@ -0,0 +1,89 @@
+// Copyright 2013, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Each TEST() expands to some static registration logic.  GCC puts all
+// such static initialization logic for a translation unit in a common,
+// internal function.  Since Google's build system restricts how much
+// stack space a function can use, there's a limit on how many TEST()s
+// one can put in a single C++ test file.  This test ensures that a large
+// number of TEST()s can be defined in the same translation unit.
+
+#include "gtest/gtest.h"
+
+// This macro defines 10 dummy tests.
+#define TEN_TESTS_(test_case_name) \
+  TEST(test_case_name, T0) {} \
+  TEST(test_case_name, T1) {} \
+  TEST(test_case_name, T2) {} \
+  TEST(test_case_name, T3) {} \
+  TEST(test_case_name, T4) {} \
+  TEST(test_case_name, T5) {} \
+  TEST(test_case_name, T6) {} \
+  TEST(test_case_name, T7) {} \
+  TEST(test_case_name, T8) {} \
+  TEST(test_case_name, T9) {}
+
+// This macro defines 100 dummy tests.
+#define HUNDRED_TESTS_(test_case_name_prefix) \
+  TEN_TESTS_(test_case_name_prefix ## 0) \
+  TEN_TESTS_(test_case_name_prefix ## 1) \
+  TEN_TESTS_(test_case_name_prefix ## 2) \
+  TEN_TESTS_(test_case_name_prefix ## 3) \
+  TEN_TESTS_(test_case_name_prefix ## 4) \
+  TEN_TESTS_(test_case_name_prefix ## 5) \
+  TEN_TESTS_(test_case_name_prefix ## 6) \
+  TEN_TESTS_(test_case_name_prefix ## 7) \
+  TEN_TESTS_(test_case_name_prefix ## 8) \
+  TEN_TESTS_(test_case_name_prefix ## 9)
+
+// This macro defines 1000 dummy tests.
+#define THOUSAND_TESTS_(test_case_name_prefix) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 0) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 1) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 2) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 3) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 4) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 5) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 6) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 7) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 8) \
+  HUNDRED_TESTS_(test_case_name_prefix ## 9)
+
+// Ensures that we can define 1000 TEST()s in the same translation
+// unit.
+THOUSAND_TESTS_(T)
+
+int main(int argc, char **argv) {
+  testing::InitGoogleTest(&argc, argv);
+
+  // We don't actually need to run the dummy tests - the purpose is to
+  // ensure that they compile.
+  return 0;
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_test_utils.py b/build/_deps/googletest-src/googletest/test/gtest_test_utils.py
new file mode 100755
index 0000000000000000000000000000000000000000..ef9363c3694539833826ecf670cdcd159a28a585
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_test_utils.py
@@ -0,0 +1,314 @@
+# Copyright 2006, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Unit test utilities for Google C++ Testing and Mocking Framework."""
+# Suppresses the 'Import not at the top of the file' lint complaint.
+# pylint: disable-msg=C6204
+
+import os
+import sys
+
+IS_WINDOWS = os.name == 'nt'
+IS_CYGWIN = os.name == 'posix' and 'CYGWIN' in os.uname()[0]
+IS_OS2 = os.name == 'os2'
+
+import atexit
+import shutil
+import tempfile
+import unittest as _test_module
+
+try:
+  import subprocess
+  _SUBPROCESS_MODULE_AVAILABLE = True
+except:
+  import popen2
+  _SUBPROCESS_MODULE_AVAILABLE = False
+# pylint: enable-msg=C6204
+
+GTEST_OUTPUT_VAR_NAME = 'GTEST_OUTPUT'
+
+# The environment variable for specifying the path to the premature-exit file.
+PREMATURE_EXIT_FILE_ENV_VAR = 'TEST_PREMATURE_EXIT_FILE'
+
+environ = os.environ.copy()
+
+
+def SetEnvVar(env_var, value):
+  """Sets/unsets an environment variable to a given value."""
+
+  if value is not None:
+    environ[env_var] = value
+  elif env_var in environ:
+    del environ[env_var]
+
+
+# Here we expose a class from a particular module, depending on the
+# environment. The comment suppresses the 'Invalid variable name' lint
+# complaint.
+TestCase = _test_module.TestCase  # pylint: disable=C6409
+
+# Initially maps a flag to its default value. After
+# _ParseAndStripGTestFlags() is called, maps a flag to its actual value.
+_flag_map = {'source_dir': os.path.dirname(sys.argv[0]),
+             'build_dir': os.path.dirname(sys.argv[0])}
+_gtest_flags_are_parsed = False
+
+
+def _ParseAndStripGTestFlags(argv):
+  """Parses and strips Google Test flags from argv.  This is idempotent."""
+
+  # Suppresses the lint complaint about a global variable since we need it
+  # here to maintain module-wide state.
+  global _gtest_flags_are_parsed  # pylint: disable=W0603
+  if _gtest_flags_are_parsed:
+    return
+
+  _gtest_flags_are_parsed = True
+  for flag in _flag_map:
+    # The environment variable overrides the default value.
+    if flag.upper() in os.environ:
+      _flag_map[flag] = os.environ[flag.upper()]
+
+    # The command line flag overrides the environment variable.
+    i = 1  # Skips the program name.
+    while i < len(argv):
+      prefix = '--' + flag + '='
+      if argv[i].startswith(prefix):
+        _flag_map[flag] = argv[i][len(prefix):]
+        del argv[i]
+        break
+      else:
+        # We don't increment i in case we just found a --gtest_* flag
+        # and removed it from argv.
+        i += 1
+
+
+def GetFlag(flag):
+  """Returns the value of the given flag."""
+
+  # In case GetFlag() is called before Main(), we always call
+  # _ParseAndStripGTestFlags() here to make sure the --gtest_* flags
+  # are parsed.
+  _ParseAndStripGTestFlags(sys.argv)
+
+  return _flag_map[flag]
+
+
+def GetSourceDir():
+  """Returns the absolute path of the directory where the .py files are."""
+
+  return os.path.abspath(GetFlag('source_dir'))
+
+
+def GetBuildDir():
+  """Returns the absolute path of the directory where the test binaries are."""
+
+  return os.path.abspath(GetFlag('build_dir'))
+
+
+_temp_dir = None
+
+def _RemoveTempDir():
+  if _temp_dir:
+    shutil.rmtree(_temp_dir, ignore_errors=True)
+
+atexit.register(_RemoveTempDir)
+
+
+def GetTempDir():
+  global _temp_dir
+  if not _temp_dir:
+    _temp_dir = tempfile.mkdtemp()
+  return _temp_dir
+
+
+def GetTestExecutablePath(executable_name, build_dir=None):
+  """Returns the absolute path of the test binary given its name.
+
+  The function will print a message and abort the program if the resulting file
+  doesn't exist.
+
+  Args:
+    executable_name: name of the test binary that the test script runs.
+    build_dir:       directory where to look for executables, by default
+                     the result of GetBuildDir().
+
+  Returns:
+    The absolute path of the test binary.
+  """
+
+  path = os.path.abspath(os.path.join(build_dir or GetBuildDir(),
+                                      executable_name))
+  if (IS_WINDOWS or IS_CYGWIN or IS_OS2) and not path.endswith('.exe'):
+    path += '.exe'
+
+  if not os.path.exists(path):
+    message = (
+        'Unable to find the test binary "%s". Please make sure to provide\n'
+        'a path to the binary via the --build_dir flag or the BUILD_DIR\n'
+        'environment variable.' % path)
+    print >> sys.stderr, message
+    sys.exit(1)
+
+  return path
+
+
+def GetExitStatus(exit_code):
+  """Returns the argument to exit(), or -1 if exit() wasn't called.
+
+  Args:
+    exit_code: the result value of os.system(command).
+  """
+
+  if os.name == 'nt':
+    # On Windows, os.WEXITSTATUS() doesn't work and os.system() returns
+    # the argument to exit() directly.
+    return exit_code
+  else:
+    # On Unix, os.WEXITSTATUS() must be used to extract the exit status
+    # from the result of os.system().
+    if os.WIFEXITED(exit_code):
+      return os.WEXITSTATUS(exit_code)
+    else:
+      return -1
+
+
+class Subprocess:
+  def __init__(self, command, working_dir=None, capture_stderr=True, env=None):
+    """Changes into a specified directory, if provided, and executes a command.
+
+    Restores the old directory afterwards.
+
+    Args:
+      command:        The command to run, in the form of sys.argv.
+      working_dir:    The directory to change into.
+      capture_stderr: Determines whether to capture stderr in the output member
+                      or to discard it.
+      env:            Dictionary with environment to pass to the subprocess.
+
+    Returns:
+      An object that represents outcome of the executed process. It has the
+      following attributes:
+        terminated_by_signal   True if and only if the child process has been
+                               terminated by a signal.
+        signal                 Sygnal that terminated the child process.
+        exited                 True if and only if the child process exited
+                               normally.
+        exit_code              The code with which the child process exited.
+        output                 Child process's stdout and stderr output
+                               combined in a string.
+    """
+
+    # The subprocess module is the preferrable way of running programs
+    # since it is available and behaves consistently on all platforms,
+    # including Windows. But it is only available starting in python 2.4.
+    # In earlier python versions, we revert to the popen2 module, which is
+    # available in python 2.0 and later but doesn't provide required
+    # functionality (Popen4) under Windows. This allows us to support Mac
+    # OS X 10.4 Tiger, which has python 2.3 installed.
+    if _SUBPROCESS_MODULE_AVAILABLE:
+      if capture_stderr:
+        stderr = subprocess.STDOUT
+      else:
+        stderr = subprocess.PIPE
+
+      p = subprocess.Popen(command,
+                           stdout=subprocess.PIPE, stderr=stderr,
+                           cwd=working_dir, universal_newlines=True, env=env)
+      # communicate returns a tuple with the file object for the child's
+      # output.
+      self.output = p.communicate()[0]
+      self._return_code = p.returncode
+    else:
+      old_dir = os.getcwd()
+
+      def _ReplaceEnvDict(dest, src):
+        # Changes made by os.environ.clear are not inheritable by child
+        # processes until Python 2.6. To produce inheritable changes we have
+        # to delete environment items with the del statement.
+        for key in dest.keys():
+          del dest[key]
+        dest.update(src)
+
+      # When 'env' is not None, backup the environment variables and replace
+      # them with the passed 'env'. When 'env' is None, we simply use the
+      # current 'os.environ' for compatibility with the subprocess.Popen
+      # semantics used above.
+      if env is not None:
+        old_environ = os.environ.copy()
+        _ReplaceEnvDict(os.environ, env)
+
+      try:
+        if working_dir is not None:
+          os.chdir(working_dir)
+        if capture_stderr:
+          p = popen2.Popen4(command)
+        else:
+          p = popen2.Popen3(command)
+        p.tochild.close()
+        self.output = p.fromchild.read()
+        ret_code = p.wait()
+      finally:
+        os.chdir(old_dir)
+
+        # Restore the old environment variables
+        # if they were replaced.
+        if env is not None:
+          _ReplaceEnvDict(os.environ, old_environ)
+
+      # Converts ret_code to match the semantics of
+      # subprocess.Popen.returncode.
+      if os.WIFSIGNALED(ret_code):
+        self._return_code = -os.WTERMSIG(ret_code)
+      else:  # os.WIFEXITED(ret_code) should return True here.
+        self._return_code = os.WEXITSTATUS(ret_code)
+
+    if self._return_code < 0:
+      self.terminated_by_signal = True
+      self.exited = False
+      self.signal = -self._return_code
+    else:
+      self.terminated_by_signal = False
+      self.exited = True
+      self.exit_code = self._return_code
+
+
+def Main():
+  """Runs the unit test."""
+
+  # We must call _ParseAndStripGTestFlags() before calling
+  # unittest.main().  Otherwise the latter will be confused by the
+  # --gtest_* flags.
+  _ParseAndStripGTestFlags(sys.argv)
+  # The tested binaries should not be writing XML output files unless the
+  # script explicitly instructs them to.
+  if GTEST_OUTPUT_VAR_NAME in os.environ:
+    del os.environ[GTEST_OUTPUT_VAR_NAME]
+
+  _test_module.main()
diff --git a/build/_deps/googletest-src/googletest/test/gtest_testbridge_test.py b/build/_deps/googletest-src/googletest/test/gtest_testbridge_test.py
new file mode 100755
index 0000000000000000000000000000000000000000..87ffad73d40065298f30500de824d808b6571d8d
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_testbridge_test.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+#
+# Copyright 2018 Google LLC. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+"""Verifies that Google Test uses filter provided via testbridge."""
+
+import os
+
+import gtest_test_utils
+
+binary_name = 'gtest_testbridge_test_'
+COMMAND = gtest_test_utils.GetTestExecutablePath(binary_name)
+TESTBRIDGE_NAME = 'TESTBRIDGE_TEST_ONLY'
+
+
+def Assert(condition):
+  if not condition:
+    raise AssertionError
+
+
+class GTestTestFilterTest(gtest_test_utils.TestCase):
+
+  def testTestExecutionIsFiltered(self):
+    """Tests that the test filter is picked up from the testbridge env var."""
+    subprocess_env = os.environ.copy()
+
+    subprocess_env[TESTBRIDGE_NAME] = '*.TestThatSucceeds'
+    p = gtest_test_utils.Subprocess(COMMAND, env=subprocess_env)
+
+    self.assertEquals(0, p.exit_code)
+
+    Assert('filter = *.TestThatSucceeds' in p.output)
+    Assert('[       OK ] TestFilterTest.TestThatSucceeds' in p.output)
+    Assert('[  PASSED  ] 1 test.' in p.output)
+
+
+if __name__ == '__main__':
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/gtest_testbridge_test_.cc b/build/_deps/googletest-src/googletest/test/gtest_testbridge_test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..24617b209e10a9d1798368e26465aaa62715f0ee
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_testbridge_test_.cc
@@ -0,0 +1,43 @@
+// Copyright 2018, Google LLC.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// This program is meant to be run by gtest_test_filter_test.py.  Do not run
+// it directly.
+
+#include "gtest/gtest.h"
+
+// These tests are used to detect if filtering is working. Only
+// 'TestThatSucceeds' should ever run.
+
+TEST(TestFilterTest, TestThatSucceeds) {}
+
+TEST(TestFilterTest, TestThatFails) {
+  ASSERT_TRUE(false) << "This test should never be run.";
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_throw_on_failure_ex_test.cc b/build/_deps/googletest-src/googletest/test/gtest_throw_on_failure_ex_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1d95adbf537ba9178163987c0d3e0c8aa03ab5ee
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_throw_on_failure_ex_test.cc
@@ -0,0 +1,90 @@
+// Copyright 2009, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Tests Google Test's throw-on-failure mode with exceptions enabled.
+
+#include "gtest/gtest.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdexcept>
+
+// Prints the given failure message and exits the program with
+// non-zero.  We use this instead of a Google Test assertion to
+// indicate a failure, as the latter is been tested and cannot be
+// relied on.
+void Fail(const char* msg) {
+  printf("FAILURE: %s\n", msg);
+  fflush(stdout);
+  exit(1);
+}
+
+// Tests that an assertion failure throws a subclass of
+// std::runtime_error.
+void TestFailureThrowsRuntimeError() {
+  testing::GTEST_FLAG(throw_on_failure) = true;
+
+  // A successful assertion shouldn't throw.
+  try {
+    EXPECT_EQ(3, 3);
+  } catch(...) {
+    Fail("A successful assertion wrongfully threw.");
+  }
+
+  // A failed assertion should throw a subclass of std::runtime_error.
+  try {
+    EXPECT_EQ(2, 3) << "Expected failure";
+  } catch(const std::runtime_error& e) {
+    if (strstr(e.what(), "Expected failure") != nullptr) return;
+
+    printf("%s",
+           "A failed assertion did throw an exception of the right type, "
+           "but the message is incorrect.  Instead of containing \"Expected "
+           "failure\", it is:\n");
+    Fail(e.what());
+  } catch(...) {
+    Fail("A failed assertion threw the wrong type of exception.");
+  }
+  Fail("A failed assertion should've thrown but didn't.");
+}
+
+int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+
+  // We want to ensure that people can use Google Test assertions in
+  // other testing frameworks, as long as they initialize Google Test
+  // properly and set the thrown-on-failure mode.  Therefore, we don't
+  // use Google Test's constructs for defining and running tests
+  // (e.g. TEST and RUN_ALL_TESTS) here.
+
+  TestFailureThrowsRuntimeError();
+  return 0;
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_unittest.cc b/build/_deps/googletest-src/googletest/test/gtest_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..39749b7b19f86203f21726a6419a2f7a3d149dbb
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_unittest.cc
@@ -0,0 +1,7488 @@
+// Copyright 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Tests for Google Test itself.  This verifies that the basic constructs of
+// Google Test work.
+
+#include "gtest/gtest.h"
+
+// Verifies that the command line flag variables can be accessed in
+// code once "gtest.h" has been #included.
+// Do not move it after other gtest #includes.
+TEST(CommandLineFlagsTest, CanBeAccessedInCodeOnceGTestHIsIncluded) {
+  bool dummy = testing::GTEST_FLAG(also_run_disabled_tests)
+      || testing::GTEST_FLAG(break_on_failure)
+      || testing::GTEST_FLAG(catch_exceptions)
+      || testing::GTEST_FLAG(color) != "unknown"
+      || testing::GTEST_FLAG(filter) != "unknown"
+      || testing::GTEST_FLAG(list_tests)
+      || testing::GTEST_FLAG(output) != "unknown"
+      || testing::GTEST_FLAG(print_time)
+      || testing::GTEST_FLAG(random_seed)
+      || testing::GTEST_FLAG(repeat) > 0
+      || testing::GTEST_FLAG(show_internal_stack_frames)
+      || testing::GTEST_FLAG(shuffle)
+      || testing::GTEST_FLAG(stack_trace_depth) > 0
+      || testing::GTEST_FLAG(stream_result_to) != "unknown"
+      || testing::GTEST_FLAG(throw_on_failure);
+  EXPECT_TRUE(dummy || !dummy);  // Suppresses warning that dummy is unused.
+}
+
+#include <limits.h>  // For INT_MAX.
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include <map>
+#include <ostream>
+#include <type_traits>
+#include <unordered_set>
+#include <vector>
+
+#include "gtest/gtest-spi.h"
+#include "src/gtest-internal-inl.h"
+
+namespace testing {
+namespace internal {
+
+#if GTEST_CAN_STREAM_RESULTS_
+
+class StreamingListenerTest : public Test {
+ public:
+  class FakeSocketWriter : public StreamingListener::AbstractSocketWriter {
+   public:
+    // Sends a string to the socket.
+    void Send(const std::string& message) override { output_ += message; }
+
+    std::string output_;
+  };
+
+  StreamingListenerTest()
+      : fake_sock_writer_(new FakeSocketWriter),
+        streamer_(fake_sock_writer_),
+        test_info_obj_("FooTest", "Bar", nullptr, nullptr,
+                       CodeLocation(__FILE__, __LINE__), nullptr, nullptr) {}
+
+ protected:
+  std::string* output() { return &(fake_sock_writer_->output_); }
+
+  FakeSocketWriter* const fake_sock_writer_;
+  StreamingListener streamer_;
+  UnitTest unit_test_;
+  TestInfo test_info_obj_;  // The name test_info_ was taken by testing::Test.
+};
+
+TEST_F(StreamingListenerTest, OnTestProgramEnd) {
+  *output() = "";
+  streamer_.OnTestProgramEnd(unit_test_);
+  EXPECT_EQ("event=TestProgramEnd&passed=1\n", *output());
+}
+
+TEST_F(StreamingListenerTest, OnTestIterationEnd) {
+  *output() = "";
+  streamer_.OnTestIterationEnd(unit_test_, 42);
+  EXPECT_EQ("event=TestIterationEnd&passed=1&elapsed_time=0ms\n", *output());
+}
+
+TEST_F(StreamingListenerTest, OnTestCaseStart) {
+  *output() = "";
+  streamer_.OnTestCaseStart(TestCase("FooTest", "Bar", nullptr, nullptr));
+  EXPECT_EQ("event=TestCaseStart&name=FooTest\n", *output());
+}
+
+TEST_F(StreamingListenerTest, OnTestCaseEnd) {
+  *output() = "";
+  streamer_.OnTestCaseEnd(TestCase("FooTest", "Bar", nullptr, nullptr));
+  EXPECT_EQ("event=TestCaseEnd&passed=1&elapsed_time=0ms\n", *output());
+}
+
+TEST_F(StreamingListenerTest, OnTestStart) {
+  *output() = "";
+  streamer_.OnTestStart(test_info_obj_);
+  EXPECT_EQ("event=TestStart&name=Bar\n", *output());
+}
+
+TEST_F(StreamingListenerTest, OnTestEnd) {
+  *output() = "";
+  streamer_.OnTestEnd(test_info_obj_);
+  EXPECT_EQ("event=TestEnd&passed=1&elapsed_time=0ms\n", *output());
+}
+
+TEST_F(StreamingListenerTest, OnTestPartResult) {
+  *output() = "";
+  streamer_.OnTestPartResult(TestPartResult(
+      TestPartResult::kFatalFailure, "foo.cc", 42, "failed=\n&%"));
+
+  // Meta characters in the failure message should be properly escaped.
+  EXPECT_EQ(
+      "event=TestPartResult&file=foo.cc&line=42&message=failed%3D%0A%26%25\n",
+      *output());
+}
+
+#endif  // GTEST_CAN_STREAM_RESULTS_
+
+// Provides access to otherwise private parts of the TestEventListeners class
+// that are needed to test it.
+class TestEventListenersAccessor {
+ public:
+  static TestEventListener* GetRepeater(TestEventListeners* listeners) {
+    return listeners->repeater();
+  }
+
+  static void SetDefaultResultPrinter(TestEventListeners* listeners,
+                                      TestEventListener* listener) {
+    listeners->SetDefaultResultPrinter(listener);
+  }
+  static void SetDefaultXmlGenerator(TestEventListeners* listeners,
+                                     TestEventListener* listener) {
+    listeners->SetDefaultXmlGenerator(listener);
+  }
+
+  static bool EventForwardingEnabled(const TestEventListeners& listeners) {
+    return listeners.EventForwardingEnabled();
+  }
+
+  static void SuppressEventForwarding(TestEventListeners* listeners) {
+    listeners->SuppressEventForwarding();
+  }
+};
+
+class UnitTestRecordPropertyTestHelper : public Test {
+ protected:
+  UnitTestRecordPropertyTestHelper() {}
+
+  // Forwards to UnitTest::RecordProperty() to bypass access controls.
+  void UnitTestRecordProperty(const char* key, const std::string& value) {
+    unit_test_.RecordProperty(key, value);
+  }
+
+  UnitTest unit_test_;
+};
+
+}  // namespace internal
+}  // namespace testing
+
+using testing::AssertionFailure;
+using testing::AssertionResult;
+using testing::AssertionSuccess;
+using testing::DoubleLE;
+using testing::EmptyTestEventListener;
+using testing::Environment;
+using testing::FloatLE;
+using testing::GTEST_FLAG(also_run_disabled_tests);
+using testing::GTEST_FLAG(break_on_failure);
+using testing::GTEST_FLAG(catch_exceptions);
+using testing::GTEST_FLAG(color);
+using testing::GTEST_FLAG(death_test_use_fork);
+using testing::GTEST_FLAG(filter);
+using testing::GTEST_FLAG(list_tests);
+using testing::GTEST_FLAG(output);
+using testing::GTEST_FLAG(print_time);
+using testing::GTEST_FLAG(random_seed);
+using testing::GTEST_FLAG(repeat);
+using testing::GTEST_FLAG(show_internal_stack_frames);
+using testing::GTEST_FLAG(shuffle);
+using testing::GTEST_FLAG(stack_trace_depth);
+using testing::GTEST_FLAG(stream_result_to);
+using testing::GTEST_FLAG(throw_on_failure);
+using testing::IsNotSubstring;
+using testing::IsSubstring;
+using testing::Message;
+using testing::ScopedFakeTestPartResultReporter;
+using testing::StaticAssertTypeEq;
+using testing::Test;
+using testing::TestCase;
+using testing::TestEventListeners;
+using testing::TestInfo;
+using testing::TestPartResult;
+using testing::TestPartResultArray;
+using testing::TestProperty;
+using testing::TestResult;
+using testing::TimeInMillis;
+using testing::UnitTest;
+using testing::internal::AlwaysFalse;
+using testing::internal::AlwaysTrue;
+using testing::internal::AppendUserMessage;
+using testing::internal::ArrayAwareFind;
+using testing::internal::ArrayEq;
+using testing::internal::CodePointToUtf8;
+using testing::internal::CopyArray;
+using testing::internal::CountIf;
+using testing::internal::EqFailure;
+using testing::internal::FloatingPoint;
+using testing::internal::ForEach;
+using testing::internal::FormatEpochTimeInMillisAsIso8601;
+using testing::internal::FormatTimeInMillisAsSeconds;
+using testing::internal::GTestFlagSaver;
+using testing::internal::GetCurrentOsStackTraceExceptTop;
+using testing::internal::GetElementOr;
+using testing::internal::GetNextRandomSeed;
+using testing::internal::GetRandomSeedFromFlag;
+using testing::internal::GetTestTypeId;
+using testing::internal::GetTimeInMillis;
+using testing::internal::GetTypeId;
+using testing::internal::GetUnitTestImpl;
+using testing::internal::Int32;
+using testing::internal::Int32FromEnvOrDie;
+using testing::internal::IsAProtocolMessage;
+using testing::internal::IsContainer;
+using testing::internal::IsContainerTest;
+using testing::internal::IsNotContainer;
+using testing::internal::NativeArray;
+using testing::internal::OsStackTraceGetter;
+using testing::internal::OsStackTraceGetterInterface;
+using testing::internal::ParseInt32Flag;
+using testing::internal::RelationToSourceCopy;
+using testing::internal::RelationToSourceReference;
+using testing::internal::ShouldRunTestOnShard;
+using testing::internal::ShouldShard;
+using testing::internal::ShouldUseColor;
+using testing::internal::Shuffle;
+using testing::internal::ShuffleRange;
+using testing::internal::SkipPrefix;
+using testing::internal::StreamableToString;
+using testing::internal::String;
+using testing::internal::TestEventListenersAccessor;
+using testing::internal::TestResultAccessor;
+using testing::internal::UInt32;
+using testing::internal::UnitTestImpl;
+using testing::internal::WideStringToUtf8;
+using testing::internal::edit_distance::CalculateOptimalEdits;
+using testing::internal::edit_distance::CreateUnifiedDiff;
+using testing::internal::edit_distance::EditType;
+using testing::internal::kMaxRandomSeed;
+using testing::internal::kTestTypeIdInGoogleTest;
+using testing::kMaxStackTraceDepth;
+
+#if GTEST_HAS_STREAM_REDIRECTION
+using testing::internal::CaptureStdout;
+using testing::internal::GetCapturedStdout;
+#endif
+
+#if GTEST_IS_THREADSAFE
+using testing::internal::ThreadWithParam;
+#endif
+
+class TestingVector : public std::vector<int> {
+};
+
+::std::ostream& operator<<(::std::ostream& os,
+                           const TestingVector& vector) {
+  os << "{ ";
+  for (size_t i = 0; i < vector.size(); i++) {
+    os << vector[i] << " ";
+  }
+  os << "}";
+  return os;
+}
+
+// This line tests that we can define tests in an unnamed namespace.
+namespace {
+
+TEST(GetRandomSeedFromFlagTest, HandlesZero) {
+  const int seed = GetRandomSeedFromFlag(0);
+  EXPECT_LE(1, seed);
+  EXPECT_LE(seed, static_cast<int>(kMaxRandomSeed));
+}
+
+TEST(GetRandomSeedFromFlagTest, PreservesValidSeed) {
+  EXPECT_EQ(1, GetRandomSeedFromFlag(1));
+  EXPECT_EQ(2, GetRandomSeedFromFlag(2));
+  EXPECT_EQ(kMaxRandomSeed - 1, GetRandomSeedFromFlag(kMaxRandomSeed - 1));
+  EXPECT_EQ(static_cast<int>(kMaxRandomSeed),
+            GetRandomSeedFromFlag(kMaxRandomSeed));
+}
+
+TEST(GetRandomSeedFromFlagTest, NormalizesInvalidSeed) {
+  const int seed1 = GetRandomSeedFromFlag(-1);
+  EXPECT_LE(1, seed1);
+  EXPECT_LE(seed1, static_cast<int>(kMaxRandomSeed));
+
+  const int seed2 = GetRandomSeedFromFlag(kMaxRandomSeed + 1);
+  EXPECT_LE(1, seed2);
+  EXPECT_LE(seed2, static_cast<int>(kMaxRandomSeed));
+}
+
+TEST(GetNextRandomSeedTest, WorksForValidInput) {
+  EXPECT_EQ(2, GetNextRandomSeed(1));
+  EXPECT_EQ(3, GetNextRandomSeed(2));
+  EXPECT_EQ(static_cast<int>(kMaxRandomSeed),
+            GetNextRandomSeed(kMaxRandomSeed - 1));
+  EXPECT_EQ(1, GetNextRandomSeed(kMaxRandomSeed));
+
+  // We deliberately don't test GetNextRandomSeed() with invalid
+  // inputs, as that requires death tests, which are expensive.  This
+  // is fine as GetNextRandomSeed() is internal and has a
+  // straightforward definition.
+}
+
+static void ClearCurrentTestPartResults() {
+  TestResultAccessor::ClearTestPartResults(
+      GetUnitTestImpl()->current_test_result());
+}
+
+// Tests GetTypeId.
+
+TEST(GetTypeIdTest, ReturnsSameValueForSameType) {
+  EXPECT_EQ(GetTypeId<int>(), GetTypeId<int>());
+  EXPECT_EQ(GetTypeId<Test>(), GetTypeId<Test>());
+}
+
+class SubClassOfTest : public Test {};
+class AnotherSubClassOfTest : public Test {};
+
+TEST(GetTypeIdTest, ReturnsDifferentValuesForDifferentTypes) {
+  EXPECT_NE(GetTypeId<int>(), GetTypeId<const int>());
+  EXPECT_NE(GetTypeId<int>(), GetTypeId<char>());
+  EXPECT_NE(GetTypeId<int>(), GetTestTypeId());
+  EXPECT_NE(GetTypeId<SubClassOfTest>(), GetTestTypeId());
+  EXPECT_NE(GetTypeId<AnotherSubClassOfTest>(), GetTestTypeId());
+  EXPECT_NE(GetTypeId<AnotherSubClassOfTest>(), GetTypeId<SubClassOfTest>());
+}
+
+// Verifies that GetTestTypeId() returns the same value, no matter it
+// is called from inside Google Test or outside of it.
+TEST(GetTestTypeIdTest, ReturnsTheSameValueInsideOrOutsideOfGoogleTest) {
+  EXPECT_EQ(kTestTypeIdInGoogleTest, GetTestTypeId());
+}
+
+// Tests CanonicalizeForStdLibVersioning.
+
+using ::testing::internal::CanonicalizeForStdLibVersioning;
+
+TEST(CanonicalizeForStdLibVersioning, LeavesUnversionedNamesUnchanged) {
+  EXPECT_EQ("std::bind", CanonicalizeForStdLibVersioning("std::bind"));
+  EXPECT_EQ("std::_", CanonicalizeForStdLibVersioning("std::_"));
+  EXPECT_EQ("std::__foo", CanonicalizeForStdLibVersioning("std::__foo"));
+  EXPECT_EQ("gtl::__1::x", CanonicalizeForStdLibVersioning("gtl::__1::x"));
+  EXPECT_EQ("__1::x", CanonicalizeForStdLibVersioning("__1::x"));
+  EXPECT_EQ("::__1::x", CanonicalizeForStdLibVersioning("::__1::x"));
+}
+
+TEST(CanonicalizeForStdLibVersioning, ElidesDoubleUnderNames) {
+  EXPECT_EQ("std::bind", CanonicalizeForStdLibVersioning("std::__1::bind"));
+  EXPECT_EQ("std::_", CanonicalizeForStdLibVersioning("std::__1::_"));
+
+  EXPECT_EQ("std::bind", CanonicalizeForStdLibVersioning("std::__g::bind"));
+  EXPECT_EQ("std::_", CanonicalizeForStdLibVersioning("std::__g::_"));
+
+  EXPECT_EQ("std::bind",
+            CanonicalizeForStdLibVersioning("std::__google::bind"));
+  EXPECT_EQ("std::_", CanonicalizeForStdLibVersioning("std::__google::_"));
+}
+
+// Tests FormatTimeInMillisAsSeconds().
+
+TEST(FormatTimeInMillisAsSecondsTest, FormatsZero) {
+  EXPECT_EQ("0", FormatTimeInMillisAsSeconds(0));
+}
+
+TEST(FormatTimeInMillisAsSecondsTest, FormatsPositiveNumber) {
+  EXPECT_EQ("0.003", FormatTimeInMillisAsSeconds(3));
+  EXPECT_EQ("0.01", FormatTimeInMillisAsSeconds(10));
+  EXPECT_EQ("0.2", FormatTimeInMillisAsSeconds(200));
+  EXPECT_EQ("1.2", FormatTimeInMillisAsSeconds(1200));
+  EXPECT_EQ("3", FormatTimeInMillisAsSeconds(3000));
+}
+
+TEST(FormatTimeInMillisAsSecondsTest, FormatsNegativeNumber) {
+  EXPECT_EQ("-0.003", FormatTimeInMillisAsSeconds(-3));
+  EXPECT_EQ("-0.01", FormatTimeInMillisAsSeconds(-10));
+  EXPECT_EQ("-0.2", FormatTimeInMillisAsSeconds(-200));
+  EXPECT_EQ("-1.2", FormatTimeInMillisAsSeconds(-1200));
+  EXPECT_EQ("-3", FormatTimeInMillisAsSeconds(-3000));
+}
+
+// Tests FormatEpochTimeInMillisAsIso8601().  The correctness of conversion
+// for particular dates below was verified in Python using
+// datetime.datetime.fromutctimestamp(<timetamp>/1000).
+
+// FormatEpochTimeInMillisAsIso8601 depends on the current timezone, so we
+// have to set up a particular timezone to obtain predictable results.
+class FormatEpochTimeInMillisAsIso8601Test : public Test {
+ public:
+  // On Cygwin, GCC doesn't allow unqualified integer literals to exceed
+  // 32 bits, even when 64-bit integer types are available.  We have to
+  // force the constants to have a 64-bit type here.
+  static const TimeInMillis kMillisPerSec = 1000;
+
+ private:
+  void SetUp() override {
+    saved_tz_ = nullptr;
+
+    GTEST_DISABLE_MSC_DEPRECATED_PUSH_(/* getenv, strdup: deprecated */)
+    if (getenv("TZ"))
+      saved_tz_ = strdup(getenv("TZ"));
+    GTEST_DISABLE_MSC_DEPRECATED_POP_()
+
+    // Set up the time zone for FormatEpochTimeInMillisAsIso8601 to use.  We
+    // cannot use the local time zone because the function's output depends
+    // on the time zone.
+    SetTimeZone("UTC+00");
+  }
+
+  void TearDown() override {
+    SetTimeZone(saved_tz_);
+    free(const_cast<char*>(saved_tz_));
+    saved_tz_ = nullptr;
+  }
+
+  static void SetTimeZone(const char* time_zone) {
+    // tzset() distinguishes between the TZ variable being present and empty
+    // and not being present, so we have to consider the case of time_zone
+    // being NULL.
+#if _MSC_VER || GTEST_OS_WINDOWS_MINGW
+    // ...Unless it's MSVC, whose standard library's _putenv doesn't
+    // distinguish between an empty and a missing variable.
+    const std::string env_var =
+        std::string("TZ=") + (time_zone ? time_zone : "");
+    _putenv(env_var.c_str());
+    GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996 /* deprecated function */)
+    tzset();
+    GTEST_DISABLE_MSC_WARNINGS_POP_()
+#else
+    if (time_zone) {
+      setenv(("TZ"), time_zone, 1);
+    } else {
+      unsetenv("TZ");
+    }
+    tzset();
+#endif
+  }
+
+  const char* saved_tz_;
+};
+
+const TimeInMillis FormatEpochTimeInMillisAsIso8601Test::kMillisPerSec;
+
+TEST_F(FormatEpochTimeInMillisAsIso8601Test, PrintsTwoDigitSegments) {
+  EXPECT_EQ("2011-10-31T18:52:42",
+            FormatEpochTimeInMillisAsIso8601(1320087162 * kMillisPerSec));
+}
+
+TEST_F(FormatEpochTimeInMillisAsIso8601Test, MillisecondsDoNotAffectResult) {
+  EXPECT_EQ(
+      "2011-10-31T18:52:42",
+      FormatEpochTimeInMillisAsIso8601(1320087162 * kMillisPerSec + 234));
+}
+
+TEST_F(FormatEpochTimeInMillisAsIso8601Test, PrintsLeadingZeroes) {
+  EXPECT_EQ("2011-09-03T05:07:02",
+            FormatEpochTimeInMillisAsIso8601(1315026422 * kMillisPerSec));
+}
+
+TEST_F(FormatEpochTimeInMillisAsIso8601Test, Prints24HourTime) {
+  EXPECT_EQ("2011-09-28T17:08:22",
+            FormatEpochTimeInMillisAsIso8601(1317229702 * kMillisPerSec));
+}
+
+TEST_F(FormatEpochTimeInMillisAsIso8601Test, PrintsEpochStart) {
+  EXPECT_EQ("1970-01-01T00:00:00", FormatEpochTimeInMillisAsIso8601(0));
+}
+
+# ifdef __BORLANDC__
+// Silences warnings: "Condition is always true", "Unreachable code"
+#  pragma option push -w-ccc -w-rch
+# endif
+
+// Tests that the LHS of EXPECT_EQ or ASSERT_EQ can be used as a null literal
+// when the RHS is a pointer type.
+TEST(NullLiteralTest, LHSAllowsNullLiterals) {
+  EXPECT_EQ(0, static_cast<void*>(nullptr));     // NOLINT
+  ASSERT_EQ(0, static_cast<void*>(nullptr));     // NOLINT
+  EXPECT_EQ(NULL, static_cast<void*>(nullptr));  // NOLINT
+  ASSERT_EQ(NULL, static_cast<void*>(nullptr));  // NOLINT
+  EXPECT_EQ(nullptr, static_cast<void*>(nullptr));
+  ASSERT_EQ(nullptr, static_cast<void*>(nullptr));
+
+  const int* const p = nullptr;
+  EXPECT_EQ(0, p);     // NOLINT
+  ASSERT_EQ(0, p);     // NOLINT
+  EXPECT_EQ(NULL, p);  // NOLINT
+  ASSERT_EQ(NULL, p);  // NOLINT
+  EXPECT_EQ(nullptr, p);
+  ASSERT_EQ(nullptr, p);
+}
+
+struct ConvertToAll {
+  template <typename T>
+  operator T() const {  // NOLINT
+    return T();
+  }
+};
+
+struct ConvertToPointer {
+  template <class T>
+  operator T*() const {  // NOLINT
+    return nullptr;
+  }
+};
+
+struct ConvertToAllButNoPointers {
+  template <typename T,
+            typename std::enable_if<!std::is_pointer<T>::value, int>::type = 0>
+  operator T() const {  // NOLINT
+    return T();
+  }
+};
+
+struct MyType {};
+inline bool operator==(MyType const&, MyType const&) { return true; }
+
+TEST(NullLiteralTest, ImplicitConversion) {
+  EXPECT_EQ(ConvertToPointer{}, static_cast<void*>(nullptr));
+#if !defined(__GNUC__) || defined(__clang__)
+  // Disabled due to GCC bug gcc.gnu.org/PR89580
+  EXPECT_EQ(ConvertToAll{}, static_cast<void*>(nullptr));
+#endif
+  EXPECT_EQ(ConvertToAll{}, MyType{});
+  EXPECT_EQ(ConvertToAllButNoPointers{}, MyType{});
+}
+
+#ifdef __clang__
+#pragma clang diagnostic push
+#if __has_warning("-Wzero-as-null-pointer-constant")
+#pragma clang diagnostic error "-Wzero-as-null-pointer-constant"
+#endif
+#endif
+
+TEST(NullLiteralTest, NoConversionNoWarning) {
+  // Test that gtests detection and handling of null pointer constants
+  // doesn't trigger a warning when '0' isn't actually used as null.
+  EXPECT_EQ(0, 0);
+  ASSERT_EQ(0, 0);
+}
+
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
+# ifdef __BORLANDC__
+// Restores warnings after previous "#pragma option push" suppressed them.
+#  pragma option pop
+# endif
+
+//
+// Tests CodePointToUtf8().
+
+// Tests that the NUL character L'\0' is encoded correctly.
+TEST(CodePointToUtf8Test, CanEncodeNul) {
+  EXPECT_EQ("", CodePointToUtf8(L'\0'));
+}
+
+// Tests that ASCII characters are encoded correctly.
+TEST(CodePointToUtf8Test, CanEncodeAscii) {
+  EXPECT_EQ("a", CodePointToUtf8(L'a'));
+  EXPECT_EQ("Z", CodePointToUtf8(L'Z'));
+  EXPECT_EQ("&", CodePointToUtf8(L'&'));
+  EXPECT_EQ("\x7F", CodePointToUtf8(L'\x7F'));
+}
+
+// Tests that Unicode code-points that have 8 to 11 bits are encoded
+// as 110xxxxx 10xxxxxx.
+TEST(CodePointToUtf8Test, CanEncode8To11Bits) {
+  // 000 1101 0011 => 110-00011 10-010011
+  EXPECT_EQ("\xC3\x93", CodePointToUtf8(L'\xD3'));
+
+  // 101 0111 0110 => 110-10101 10-110110
+  // Some compilers (e.g., GCC on MinGW) cannot handle non-ASCII codepoints
+  // in wide strings and wide chars. In order to accommodate them, we have to
+  // introduce such character constants as integers.
+  EXPECT_EQ("\xD5\xB6",
+            CodePointToUtf8(static_cast<wchar_t>(0x576)));
+}
+
+// Tests that Unicode code-points that have 12 to 16 bits are encoded
+// as 1110xxxx 10xxxxxx 10xxxxxx.
+TEST(CodePointToUtf8Test, CanEncode12To16Bits) {
+  // 0000 1000 1101 0011 => 1110-0000 10-100011 10-010011
+  EXPECT_EQ("\xE0\xA3\x93",
+            CodePointToUtf8(static_cast<wchar_t>(0x8D3)));
+
+  // 1100 0111 0100 1101 => 1110-1100 10-011101 10-001101
+  EXPECT_EQ("\xEC\x9D\x8D",
+            CodePointToUtf8(static_cast<wchar_t>(0xC74D)));
+}
+
+#if !GTEST_WIDE_STRING_USES_UTF16_
+// Tests in this group require a wchar_t to hold > 16 bits, and thus
+// are skipped on Windows, and Cygwin, where a wchar_t is
+// 16-bit wide. This code may not compile on those systems.
+
+// Tests that Unicode code-points that have 17 to 21 bits are encoded
+// as 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx.
+TEST(CodePointToUtf8Test, CanEncode17To21Bits) {
+  // 0 0001 0000 1000 1101 0011 => 11110-000 10-010000 10-100011 10-010011
+  EXPECT_EQ("\xF0\x90\xA3\x93", CodePointToUtf8(L'\x108D3'));
+
+  // 0 0001 0000 0100 0000 0000 => 11110-000 10-010000 10-010000 10-000000
+  EXPECT_EQ("\xF0\x90\x90\x80", CodePointToUtf8(L'\x10400'));
+
+  // 1 0000 1000 0110 0011 0100 => 11110-100 10-001000 10-011000 10-110100
+  EXPECT_EQ("\xF4\x88\x98\xB4", CodePointToUtf8(L'\x108634'));
+}
+
+// Tests that encoding an invalid code-point generates the expected result.
+TEST(CodePointToUtf8Test, CanEncodeInvalidCodePoint) {
+  EXPECT_EQ("(Invalid Unicode 0x1234ABCD)", CodePointToUtf8(L'\x1234ABCD'));
+}
+
+#endif  // !GTEST_WIDE_STRING_USES_UTF16_
+
+// Tests WideStringToUtf8().
+
+// Tests that the NUL character L'\0' is encoded correctly.
+TEST(WideStringToUtf8Test, CanEncodeNul) {
+  EXPECT_STREQ("", WideStringToUtf8(L"", 0).c_str());
+  EXPECT_STREQ("", WideStringToUtf8(L"", -1).c_str());
+}
+
+// Tests that ASCII strings are encoded correctly.
+TEST(WideStringToUtf8Test, CanEncodeAscii) {
+  EXPECT_STREQ("a", WideStringToUtf8(L"a", 1).c_str());
+  EXPECT_STREQ("ab", WideStringToUtf8(L"ab", 2).c_str());
+  EXPECT_STREQ("a", WideStringToUtf8(L"a", -1).c_str());
+  EXPECT_STREQ("ab", WideStringToUtf8(L"ab", -1).c_str());
+}
+
+// Tests that Unicode code-points that have 8 to 11 bits are encoded
+// as 110xxxxx 10xxxxxx.
+TEST(WideStringToUtf8Test, CanEncode8To11Bits) {
+  // 000 1101 0011 => 110-00011 10-010011
+  EXPECT_STREQ("\xC3\x93", WideStringToUtf8(L"\xD3", 1).c_str());
+  EXPECT_STREQ("\xC3\x93", WideStringToUtf8(L"\xD3", -1).c_str());
+
+  // 101 0111 0110 => 110-10101 10-110110
+  const wchar_t s[] = { 0x576, '\0' };
+  EXPECT_STREQ("\xD5\xB6", WideStringToUtf8(s, 1).c_str());
+  EXPECT_STREQ("\xD5\xB6", WideStringToUtf8(s, -1).c_str());
+}
+
+// Tests that Unicode code-points that have 12 to 16 bits are encoded
+// as 1110xxxx 10xxxxxx 10xxxxxx.
+TEST(WideStringToUtf8Test, CanEncode12To16Bits) {
+  // 0000 1000 1101 0011 => 1110-0000 10-100011 10-010011
+  const wchar_t s1[] = { 0x8D3, '\0' };
+  EXPECT_STREQ("\xE0\xA3\x93", WideStringToUtf8(s1, 1).c_str());
+  EXPECT_STREQ("\xE0\xA3\x93", WideStringToUtf8(s1, -1).c_str());
+
+  // 1100 0111 0100 1101 => 1110-1100 10-011101 10-001101
+  const wchar_t s2[] = { 0xC74D, '\0' };
+  EXPECT_STREQ("\xEC\x9D\x8D", WideStringToUtf8(s2, 1).c_str());
+  EXPECT_STREQ("\xEC\x9D\x8D", WideStringToUtf8(s2, -1).c_str());
+}
+
+// Tests that the conversion stops when the function encounters \0 character.
+TEST(WideStringToUtf8Test, StopsOnNulCharacter) {
+  EXPECT_STREQ("ABC", WideStringToUtf8(L"ABC\0XYZ", 100).c_str());
+}
+
+// Tests that the conversion stops when the function reaches the limit
+// specified by the 'length' parameter.
+TEST(WideStringToUtf8Test, StopsWhenLengthLimitReached) {
+  EXPECT_STREQ("ABC", WideStringToUtf8(L"ABCDEF", 3).c_str());
+}
+
+#if !GTEST_WIDE_STRING_USES_UTF16_
+// Tests that Unicode code-points that have 17 to 21 bits are encoded
+// as 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx. This code may not compile
+// on the systems using UTF-16 encoding.
+TEST(WideStringToUtf8Test, CanEncode17To21Bits) {
+  // 0 0001 0000 1000 1101 0011 => 11110-000 10-010000 10-100011 10-010011
+  EXPECT_STREQ("\xF0\x90\xA3\x93", WideStringToUtf8(L"\x108D3", 1).c_str());
+  EXPECT_STREQ("\xF0\x90\xA3\x93", WideStringToUtf8(L"\x108D3", -1).c_str());
+
+  // 1 0000 1000 0110 0011 0100 => 11110-100 10-001000 10-011000 10-110100
+  EXPECT_STREQ("\xF4\x88\x98\xB4", WideStringToUtf8(L"\x108634", 1).c_str());
+  EXPECT_STREQ("\xF4\x88\x98\xB4", WideStringToUtf8(L"\x108634", -1).c_str());
+}
+
+// Tests that encoding an invalid code-point generates the expected result.
+TEST(WideStringToUtf8Test, CanEncodeInvalidCodePoint) {
+  EXPECT_STREQ("(Invalid Unicode 0xABCDFF)",
+               WideStringToUtf8(L"\xABCDFF", -1).c_str());
+}
+#else  // !GTEST_WIDE_STRING_USES_UTF16_
+// Tests that surrogate pairs are encoded correctly on the systems using
+// UTF-16 encoding in the wide strings.
+TEST(WideStringToUtf8Test, CanEncodeValidUtf16SUrrogatePairs) {
+  const wchar_t s[] = { 0xD801, 0xDC00, '\0' };
+  EXPECT_STREQ("\xF0\x90\x90\x80", WideStringToUtf8(s, -1).c_str());
+}
+
+// Tests that encoding an invalid UTF-16 surrogate pair
+// generates the expected result.
+TEST(WideStringToUtf8Test, CanEncodeInvalidUtf16SurrogatePair) {
+  // Leading surrogate is at the end of the string.
+  const wchar_t s1[] = { 0xD800, '\0' };
+  EXPECT_STREQ("\xED\xA0\x80", WideStringToUtf8(s1, -1).c_str());
+  // Leading surrogate is not followed by the trailing surrogate.
+  const wchar_t s2[] = { 0xD800, 'M', '\0' };
+  EXPECT_STREQ("\xED\xA0\x80M", WideStringToUtf8(s2, -1).c_str());
+  // Trailing surrogate appearas without a leading surrogate.
+  const wchar_t s3[] = { 0xDC00, 'P', 'Q', 'R', '\0' };
+  EXPECT_STREQ("\xED\xB0\x80PQR", WideStringToUtf8(s3, -1).c_str());
+}
+#endif  // !GTEST_WIDE_STRING_USES_UTF16_
+
+// Tests that codepoint concatenation works correctly.
+#if !GTEST_WIDE_STRING_USES_UTF16_
+TEST(WideStringToUtf8Test, ConcatenatesCodepointsCorrectly) {
+  const wchar_t s[] = { 0x108634, 0xC74D, '\n', 0x576, 0x8D3, 0x108634, '\0'};
+  EXPECT_STREQ(
+      "\xF4\x88\x98\xB4"
+          "\xEC\x9D\x8D"
+          "\n"
+          "\xD5\xB6"
+          "\xE0\xA3\x93"
+          "\xF4\x88\x98\xB4",
+      WideStringToUtf8(s, -1).c_str());
+}
+#else
+TEST(WideStringToUtf8Test, ConcatenatesCodepointsCorrectly) {
+  const wchar_t s[] = { 0xC74D, '\n', 0x576, 0x8D3, '\0'};
+  EXPECT_STREQ(
+      "\xEC\x9D\x8D" "\n" "\xD5\xB6" "\xE0\xA3\x93",
+      WideStringToUtf8(s, -1).c_str());
+}
+#endif  // !GTEST_WIDE_STRING_USES_UTF16_
+
+// Tests the Random class.
+
+TEST(RandomDeathTest, GeneratesCrashesOnInvalidRange) {
+  testing::internal::Random random(42);
+  EXPECT_DEATH_IF_SUPPORTED(
+      random.Generate(0),
+      "Cannot generate a number in the range \\[0, 0\\)");
+  EXPECT_DEATH_IF_SUPPORTED(
+      random.Generate(testing::internal::Random::kMaxRange + 1),
+      "Generation of a number in \\[0, 2147483649\\) was requested, "
+      "but this can only generate numbers in \\[0, 2147483648\\)");
+}
+
+TEST(RandomTest, GeneratesNumbersWithinRange) {
+  const UInt32 kRange = 10000;
+  testing::internal::Random random(12345);
+  for (int i = 0; i < 10; i++) {
+    EXPECT_LT(random.Generate(kRange), kRange) << " for iteration " << i;
+  }
+
+  testing::internal::Random random2(testing::internal::Random::kMaxRange);
+  for (int i = 0; i < 10; i++) {
+    EXPECT_LT(random2.Generate(kRange), kRange) << " for iteration " << i;
+  }
+}
+
+TEST(RandomTest, RepeatsWhenReseeded) {
+  const int kSeed = 123;
+  const int kArraySize = 10;
+  const UInt32 kRange = 10000;
+  UInt32 values[kArraySize];
+
+  testing::internal::Random random(kSeed);
+  for (int i = 0; i < kArraySize; i++) {
+    values[i] = random.Generate(kRange);
+  }
+
+  random.Reseed(kSeed);
+  for (int i = 0; i < kArraySize; i++) {
+    EXPECT_EQ(values[i], random.Generate(kRange)) << " for iteration " << i;
+  }
+}
+
+// Tests STL container utilities.
+
+// Tests CountIf().
+
+static bool IsPositive(int n) { return n > 0; }
+
+TEST(ContainerUtilityTest, CountIf) {
+  std::vector<int> v;
+  EXPECT_EQ(0, CountIf(v, IsPositive));  // Works for an empty container.
+
+  v.push_back(-1);
+  v.push_back(0);
+  EXPECT_EQ(0, CountIf(v, IsPositive));  // Works when no value satisfies.
+
+  v.push_back(2);
+  v.push_back(-10);
+  v.push_back(10);
+  EXPECT_EQ(2, CountIf(v, IsPositive));
+}
+
+// Tests ForEach().
+
+static int g_sum = 0;
+static void Accumulate(int n) { g_sum += n; }
+
+TEST(ContainerUtilityTest, ForEach) {
+  std::vector<int> v;
+  g_sum = 0;
+  ForEach(v, Accumulate);
+  EXPECT_EQ(0, g_sum);  // Works for an empty container;
+
+  g_sum = 0;
+  v.push_back(1);
+  ForEach(v, Accumulate);
+  EXPECT_EQ(1, g_sum);  // Works for a container with one element.
+
+  g_sum = 0;
+  v.push_back(20);
+  v.push_back(300);
+  ForEach(v, Accumulate);
+  EXPECT_EQ(321, g_sum);
+}
+
+// Tests GetElementOr().
+TEST(ContainerUtilityTest, GetElementOr) {
+  std::vector<char> a;
+  EXPECT_EQ('x', GetElementOr(a, 0, 'x'));
+
+  a.push_back('a');
+  a.push_back('b');
+  EXPECT_EQ('a', GetElementOr(a, 0, 'x'));
+  EXPECT_EQ('b', GetElementOr(a, 1, 'x'));
+  EXPECT_EQ('x', GetElementOr(a, -2, 'x'));
+  EXPECT_EQ('x', GetElementOr(a, 2, 'x'));
+}
+
+TEST(ContainerUtilityDeathTest, ShuffleRange) {
+  std::vector<int> a;
+  a.push_back(0);
+  a.push_back(1);
+  a.push_back(2);
+  testing::internal::Random random(1);
+
+  EXPECT_DEATH_IF_SUPPORTED(
+      ShuffleRange(&random, -1, 1, &a),
+      "Invalid shuffle range start -1: must be in range \\[0, 3\\]");
+  EXPECT_DEATH_IF_SUPPORTED(
+      ShuffleRange(&random, 4, 4, &a),
+      "Invalid shuffle range start 4: must be in range \\[0, 3\\]");
+  EXPECT_DEATH_IF_SUPPORTED(
+      ShuffleRange(&random, 3, 2, &a),
+      "Invalid shuffle range finish 2: must be in range \\[3, 3\\]");
+  EXPECT_DEATH_IF_SUPPORTED(
+      ShuffleRange(&random, 3, 4, &a),
+      "Invalid shuffle range finish 4: must be in range \\[3, 3\\]");
+}
+
+class VectorShuffleTest : public Test {
+ protected:
+  static const size_t kVectorSize = 20;
+
+  VectorShuffleTest() : random_(1) {
+    for (int i = 0; i < static_cast<int>(kVectorSize); i++) {
+      vector_.push_back(i);
+    }
+  }
+
+  static bool VectorIsCorrupt(const TestingVector& vector) {
+    if (kVectorSize != vector.size()) {
+      return true;
+    }
+
+    bool found_in_vector[kVectorSize] = { false };
+    for (size_t i = 0; i < vector.size(); i++) {
+      const int e = vector[i];
+      if (e < 0 || e >= static_cast<int>(kVectorSize) || found_in_vector[e]) {
+        return true;
+      }
+      found_in_vector[e] = true;
+    }
+
+    // Vector size is correct, elements' range is correct, no
+    // duplicate elements.  Therefore no corruption has occurred.
+    return false;
+  }
+
+  static bool VectorIsNotCorrupt(const TestingVector& vector) {
+    return !VectorIsCorrupt(vector);
+  }
+
+  static bool RangeIsShuffled(const TestingVector& vector, int begin, int end) {
+    for (int i = begin; i < end; i++) {
+      if (i != vector[static_cast<size_t>(i)]) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  static bool RangeIsUnshuffled(
+      const TestingVector& vector, int begin, int end) {
+    return !RangeIsShuffled(vector, begin, end);
+  }
+
+  static bool VectorIsShuffled(const TestingVector& vector) {
+    return RangeIsShuffled(vector, 0, static_cast<int>(vector.size()));
+  }
+
+  static bool VectorIsUnshuffled(const TestingVector& vector) {
+    return !VectorIsShuffled(vector);
+  }
+
+  testing::internal::Random random_;
+  TestingVector vector_;
+};  // class VectorShuffleTest
+
+const size_t VectorShuffleTest::kVectorSize;
+
+TEST_F(VectorShuffleTest, HandlesEmptyRange) {
+  // Tests an empty range at the beginning...
+  ShuffleRange(&random_, 0, 0, &vector_);
+  ASSERT_PRED1(VectorIsNotCorrupt, vector_);
+  ASSERT_PRED1(VectorIsUnshuffled, vector_);
+
+  // ...in the middle...
+  ShuffleRange(&random_, kVectorSize/2, kVectorSize/2, &vector_);
+  ASSERT_PRED1(VectorIsNotCorrupt, vector_);
+  ASSERT_PRED1(VectorIsUnshuffled, vector_);
+
+  // ...at the end...
+  ShuffleRange(&random_, kVectorSize - 1, kVectorSize - 1, &vector_);
+  ASSERT_PRED1(VectorIsNotCorrupt, vector_);
+  ASSERT_PRED1(VectorIsUnshuffled, vector_);
+
+  // ...and past the end.
+  ShuffleRange(&random_, kVectorSize, kVectorSize, &vector_);
+  ASSERT_PRED1(VectorIsNotCorrupt, vector_);
+  ASSERT_PRED1(VectorIsUnshuffled, vector_);
+}
+
+TEST_F(VectorShuffleTest, HandlesRangeOfSizeOne) {
+  // Tests a size one range at the beginning...
+  ShuffleRange(&random_, 0, 1, &vector_);
+  ASSERT_PRED1(VectorIsNotCorrupt, vector_);
+  ASSERT_PRED1(VectorIsUnshuffled, vector_);
+
+  // ...in the middle...
+  ShuffleRange(&random_, kVectorSize/2, kVectorSize/2 + 1, &vector_);
+  ASSERT_PRED1(VectorIsNotCorrupt, vector_);
+  ASSERT_PRED1(VectorIsUnshuffled, vector_);
+
+  // ...and at the end.
+  ShuffleRange(&random_, kVectorSize - 1, kVectorSize, &vector_);
+  ASSERT_PRED1(VectorIsNotCorrupt, vector_);
+  ASSERT_PRED1(VectorIsUnshuffled, vector_);
+}
+
+// Because we use our own random number generator and a fixed seed,
+// we can guarantee that the following "random" tests will succeed.
+
+TEST_F(VectorShuffleTest, ShufflesEntireVector) {
+  Shuffle(&random_, &vector_);
+  ASSERT_PRED1(VectorIsNotCorrupt, vector_);
+  EXPECT_FALSE(VectorIsUnshuffled(vector_)) << vector_;
+
+  // Tests the first and last elements in particular to ensure that
+  // there are no off-by-one problems in our shuffle algorithm.
+  EXPECT_NE(0, vector_[0]);
+  EXPECT_NE(static_cast<int>(kVectorSize - 1), vector_[kVectorSize - 1]);
+}
+
+TEST_F(VectorShuffleTest, ShufflesStartOfVector) {
+  const int kRangeSize = kVectorSize/2;
+
+  ShuffleRange(&random_, 0, kRangeSize, &vector_);
+
+  ASSERT_PRED1(VectorIsNotCorrupt, vector_);
+  EXPECT_PRED3(RangeIsShuffled, vector_, 0, kRangeSize);
+  EXPECT_PRED3(RangeIsUnshuffled, vector_, kRangeSize,
+               static_cast<int>(kVectorSize));
+}
+
+TEST_F(VectorShuffleTest, ShufflesEndOfVector) {
+  const int kRangeSize = kVectorSize / 2;
+  ShuffleRange(&random_, kRangeSize, kVectorSize, &vector_);
+
+  ASSERT_PRED1(VectorIsNotCorrupt, vector_);
+  EXPECT_PRED3(RangeIsUnshuffled, vector_, 0, kRangeSize);
+  EXPECT_PRED3(RangeIsShuffled, vector_, kRangeSize,
+               static_cast<int>(kVectorSize));
+}
+
+TEST_F(VectorShuffleTest, ShufflesMiddleOfVector) {
+  const int kRangeSize = static_cast<int>(kVectorSize) / 3;
+  ShuffleRange(&random_, kRangeSize, 2*kRangeSize, &vector_);
+
+  ASSERT_PRED1(VectorIsNotCorrupt, vector_);
+  EXPECT_PRED3(RangeIsUnshuffled, vector_, 0, kRangeSize);
+  EXPECT_PRED3(RangeIsShuffled, vector_, kRangeSize, 2*kRangeSize);
+  EXPECT_PRED3(RangeIsUnshuffled, vector_, 2 * kRangeSize,
+               static_cast<int>(kVectorSize));
+}
+
+TEST_F(VectorShuffleTest, ShufflesRepeatably) {
+  TestingVector vector2;
+  for (size_t i = 0; i < kVectorSize; i++) {
+    vector2.push_back(static_cast<int>(i));
+  }
+
+  random_.Reseed(1234);
+  Shuffle(&random_, &vector_);
+  random_.Reseed(1234);
+  Shuffle(&random_, &vector2);
+
+  ASSERT_PRED1(VectorIsNotCorrupt, vector_);
+  ASSERT_PRED1(VectorIsNotCorrupt, vector2);
+
+  for (size_t i = 0; i < kVectorSize; i++) {
+    EXPECT_EQ(vector_[i], vector2[i]) << " where i is " << i;
+  }
+}
+
+// Tests the size of the AssertHelper class.
+
+TEST(AssertHelperTest, AssertHelperIsSmall) {
+  // To avoid breaking clients that use lots of assertions in one
+  // function, we cannot grow the size of AssertHelper.
+  EXPECT_LE(sizeof(testing::internal::AssertHelper), sizeof(void*));
+}
+
+// Tests String::EndsWithCaseInsensitive().
+TEST(StringTest, EndsWithCaseInsensitive) {
+  EXPECT_TRUE(String::EndsWithCaseInsensitive("foobar", "BAR"));
+  EXPECT_TRUE(String::EndsWithCaseInsensitive("foobaR", "bar"));
+  EXPECT_TRUE(String::EndsWithCaseInsensitive("foobar", ""));
+  EXPECT_TRUE(String::EndsWithCaseInsensitive("", ""));
+
+  EXPECT_FALSE(String::EndsWithCaseInsensitive("Foobar", "foo"));
+  EXPECT_FALSE(String::EndsWithCaseInsensitive("foobar", "Foo"));
+  EXPECT_FALSE(String::EndsWithCaseInsensitive("", "foo"));
+}
+
+// C++Builder's preprocessor is buggy; it fails to expand macros that
+// appear in macro parameters after wide char literals.  Provide an alias
+// for NULL as a workaround.
+static const wchar_t* const kNull = nullptr;
+
+// Tests String::CaseInsensitiveWideCStringEquals
+TEST(StringTest, CaseInsensitiveWideCStringEquals) {
+  EXPECT_TRUE(String::CaseInsensitiveWideCStringEquals(nullptr, nullptr));
+  EXPECT_FALSE(String::CaseInsensitiveWideCStringEquals(kNull, L""));
+  EXPECT_FALSE(String::CaseInsensitiveWideCStringEquals(L"", kNull));
+  EXPECT_FALSE(String::CaseInsensitiveWideCStringEquals(kNull, L"foobar"));
+  EXPECT_FALSE(String::CaseInsensitiveWideCStringEquals(L"foobar", kNull));
+  EXPECT_TRUE(String::CaseInsensitiveWideCStringEquals(L"foobar", L"foobar"));
+  EXPECT_TRUE(String::CaseInsensitiveWideCStringEquals(L"foobar", L"FOOBAR"));
+  EXPECT_TRUE(String::CaseInsensitiveWideCStringEquals(L"FOOBAR", L"foobar"));
+}
+
+#if GTEST_OS_WINDOWS
+
+// Tests String::ShowWideCString().
+TEST(StringTest, ShowWideCString) {
+  EXPECT_STREQ("(null)",
+               String::ShowWideCString(NULL).c_str());
+  EXPECT_STREQ("", String::ShowWideCString(L"").c_str());
+  EXPECT_STREQ("foo", String::ShowWideCString(L"foo").c_str());
+}
+
+# if GTEST_OS_WINDOWS_MOBILE
+TEST(StringTest, AnsiAndUtf16Null) {
+  EXPECT_EQ(NULL, String::AnsiToUtf16(NULL));
+  EXPECT_EQ(NULL, String::Utf16ToAnsi(NULL));
+}
+
+TEST(StringTest, AnsiAndUtf16ConvertBasic) {
+  const char* ansi = String::Utf16ToAnsi(L"str");
+  EXPECT_STREQ("str", ansi);
+  delete [] ansi;
+  const WCHAR* utf16 = String::AnsiToUtf16("str");
+  EXPECT_EQ(0, wcsncmp(L"str", utf16, 3));
+  delete [] utf16;
+}
+
+TEST(StringTest, AnsiAndUtf16ConvertPathChars) {
+  const char* ansi = String::Utf16ToAnsi(L".:\\ \"*?");
+  EXPECT_STREQ(".:\\ \"*?", ansi);
+  delete [] ansi;
+  const WCHAR* utf16 = String::AnsiToUtf16(".:\\ \"*?");
+  EXPECT_EQ(0, wcsncmp(L".:\\ \"*?", utf16, 3));
+  delete [] utf16;
+}
+# endif  // GTEST_OS_WINDOWS_MOBILE
+
+#endif  // GTEST_OS_WINDOWS
+
+// Tests TestProperty construction.
+TEST(TestPropertyTest, StringValue) {
+  TestProperty property("key", "1");
+  EXPECT_STREQ("key", property.key());
+  EXPECT_STREQ("1", property.value());
+}
+
+// Tests TestProperty replacing a value.
+TEST(TestPropertyTest, ReplaceStringValue) {
+  TestProperty property("key", "1");
+  EXPECT_STREQ("1", property.value());
+  property.SetValue("2");
+  EXPECT_STREQ("2", property.value());
+}
+
+// AddFatalFailure() and AddNonfatalFailure() must be stand-alone
+// functions (i.e. their definitions cannot be inlined at the call
+// sites), or C++Builder won't compile the code.
+static void AddFatalFailure() {
+  FAIL() << "Expected fatal failure.";
+}
+
+static void AddNonfatalFailure() {
+  ADD_FAILURE() << "Expected non-fatal failure.";
+}
+
+class ScopedFakeTestPartResultReporterTest : public Test {
+ public:  // Must be public and not protected due to a bug in g++ 3.4.2.
+  enum FailureMode {
+    FATAL_FAILURE,
+    NONFATAL_FAILURE
+  };
+  static void AddFailure(FailureMode failure) {
+    if (failure == FATAL_FAILURE) {
+      AddFatalFailure();
+    } else {
+      AddNonfatalFailure();
+    }
+  }
+};
+
+// Tests that ScopedFakeTestPartResultReporter intercepts test
+// failures.
+TEST_F(ScopedFakeTestPartResultReporterTest, InterceptsTestFailures) {
+  TestPartResultArray results;
+  {
+    ScopedFakeTestPartResultReporter reporter(
+        ScopedFakeTestPartResultReporter::INTERCEPT_ONLY_CURRENT_THREAD,
+        &results);
+    AddFailure(NONFATAL_FAILURE);
+    AddFailure(FATAL_FAILURE);
+  }
+
+  EXPECT_EQ(2, results.size());
+  EXPECT_TRUE(results.GetTestPartResult(0).nonfatally_failed());
+  EXPECT_TRUE(results.GetTestPartResult(1).fatally_failed());
+}
+
+TEST_F(ScopedFakeTestPartResultReporterTest, DeprecatedConstructor) {
+  TestPartResultArray results;
+  {
+    // Tests, that the deprecated constructor still works.
+    ScopedFakeTestPartResultReporter reporter(&results);
+    AddFailure(NONFATAL_FAILURE);
+  }
+  EXPECT_EQ(1, results.size());
+}
+
+#if GTEST_IS_THREADSAFE
+
+class ScopedFakeTestPartResultReporterWithThreadsTest
+  : public ScopedFakeTestPartResultReporterTest {
+ protected:
+  static void AddFailureInOtherThread(FailureMode failure) {
+    ThreadWithParam<FailureMode> thread(&AddFailure, failure, nullptr);
+    thread.Join();
+  }
+};
+
+TEST_F(ScopedFakeTestPartResultReporterWithThreadsTest,
+       InterceptsTestFailuresInAllThreads) {
+  TestPartResultArray results;
+  {
+    ScopedFakeTestPartResultReporter reporter(
+        ScopedFakeTestPartResultReporter::INTERCEPT_ALL_THREADS, &results);
+    AddFailure(NONFATAL_FAILURE);
+    AddFailure(FATAL_FAILURE);
+    AddFailureInOtherThread(NONFATAL_FAILURE);
+    AddFailureInOtherThread(FATAL_FAILURE);
+  }
+
+  EXPECT_EQ(4, results.size());
+  EXPECT_TRUE(results.GetTestPartResult(0).nonfatally_failed());
+  EXPECT_TRUE(results.GetTestPartResult(1).fatally_failed());
+  EXPECT_TRUE(results.GetTestPartResult(2).nonfatally_failed());
+  EXPECT_TRUE(results.GetTestPartResult(3).fatally_failed());
+}
+
+#endif  // GTEST_IS_THREADSAFE
+
+// Tests EXPECT_FATAL_FAILURE{,ON_ALL_THREADS}.  Makes sure that they
+// work even if the failure is generated in a called function rather than
+// the current context.
+
+typedef ScopedFakeTestPartResultReporterTest ExpectFatalFailureTest;
+
+TEST_F(ExpectFatalFailureTest, CatchesFatalFaliure) {
+  EXPECT_FATAL_FAILURE(AddFatalFailure(), "Expected fatal failure.");
+}
+
+TEST_F(ExpectFatalFailureTest, AcceptsStdStringObject) {
+  EXPECT_FATAL_FAILURE(AddFatalFailure(),
+                       ::std::string("Expected fatal failure."));
+}
+
+TEST_F(ExpectFatalFailureTest, CatchesFatalFailureOnAllThreads) {
+  // We have another test below to verify that the macro catches fatal
+  // failures generated on another thread.
+  EXPECT_FATAL_FAILURE_ON_ALL_THREADS(AddFatalFailure(),
+                                      "Expected fatal failure.");
+}
+
+#ifdef __BORLANDC__
+// Silences warnings: "Condition is always true"
+# pragma option push -w-ccc
+#endif
+
+// Tests that EXPECT_FATAL_FAILURE() can be used in a non-void
+// function even when the statement in it contains ASSERT_*.
+
+int NonVoidFunction() {
+  EXPECT_FATAL_FAILURE(ASSERT_TRUE(false), "");
+  EXPECT_FATAL_FAILURE_ON_ALL_THREADS(FAIL(), "");
+  return 0;
+}
+
+TEST_F(ExpectFatalFailureTest, CanBeUsedInNonVoidFunction) {
+  NonVoidFunction();
+}
+
+// Tests that EXPECT_FATAL_FAILURE(statement, ...) doesn't abort the
+// current function even though 'statement' generates a fatal failure.
+
+void DoesNotAbortHelper(bool* aborted) {
+  EXPECT_FATAL_FAILURE(ASSERT_TRUE(false), "");
+  EXPECT_FATAL_FAILURE_ON_ALL_THREADS(FAIL(), "");
+
+  *aborted = false;
+}
+
+#ifdef __BORLANDC__
+// Restores warnings after previous "#pragma option push" suppressed them.
+# pragma option pop
+#endif
+
+TEST_F(ExpectFatalFailureTest, DoesNotAbort) {
+  bool aborted = true;
+  DoesNotAbortHelper(&aborted);
+  EXPECT_FALSE(aborted);
+}
+
+// Tests that the EXPECT_FATAL_FAILURE{,_ON_ALL_THREADS} accepts a
+// statement that contains a macro which expands to code containing an
+// unprotected comma.
+
+static int global_var = 0;
+#define GTEST_USE_UNPROTECTED_COMMA_ global_var++, global_var++
+
+TEST_F(ExpectFatalFailureTest, AcceptsMacroThatExpandsToUnprotectedComma) {
+#ifndef __BORLANDC__
+  // ICE's in C++Builder.
+  EXPECT_FATAL_FAILURE({
+    GTEST_USE_UNPROTECTED_COMMA_;
+    AddFatalFailure();
+  }, "");
+#endif
+
+  EXPECT_FATAL_FAILURE_ON_ALL_THREADS({
+    GTEST_USE_UNPROTECTED_COMMA_;
+    AddFatalFailure();
+  }, "");
+}
+
+// Tests EXPECT_NONFATAL_FAILURE{,ON_ALL_THREADS}.
+
+typedef ScopedFakeTestPartResultReporterTest ExpectNonfatalFailureTest;
+
+TEST_F(ExpectNonfatalFailureTest, CatchesNonfatalFailure) {
+  EXPECT_NONFATAL_FAILURE(AddNonfatalFailure(),
+                          "Expected non-fatal failure.");
+}
+
+TEST_F(ExpectNonfatalFailureTest, AcceptsStdStringObject) {
+  EXPECT_NONFATAL_FAILURE(AddNonfatalFailure(),
+                          ::std::string("Expected non-fatal failure."));
+}
+
+TEST_F(ExpectNonfatalFailureTest, CatchesNonfatalFailureOnAllThreads) {
+  // We have another test below to verify that the macro catches
+  // non-fatal failures generated on another thread.
+  EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(AddNonfatalFailure(),
+                                         "Expected non-fatal failure.");
+}
+
+// Tests that the EXPECT_NONFATAL_FAILURE{,_ON_ALL_THREADS} accepts a
+// statement that contains a macro which expands to code containing an
+// unprotected comma.
+TEST_F(ExpectNonfatalFailureTest, AcceptsMacroThatExpandsToUnprotectedComma) {
+  EXPECT_NONFATAL_FAILURE({
+    GTEST_USE_UNPROTECTED_COMMA_;
+    AddNonfatalFailure();
+  }, "");
+
+  EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS({
+    GTEST_USE_UNPROTECTED_COMMA_;
+    AddNonfatalFailure();
+  }, "");
+}
+
+#if GTEST_IS_THREADSAFE
+
+typedef ScopedFakeTestPartResultReporterWithThreadsTest
+    ExpectFailureWithThreadsTest;
+
+TEST_F(ExpectFailureWithThreadsTest, ExpectFatalFailureOnAllThreads) {
+  EXPECT_FATAL_FAILURE_ON_ALL_THREADS(AddFailureInOtherThread(FATAL_FAILURE),
+                                      "Expected fatal failure.");
+}
+
+TEST_F(ExpectFailureWithThreadsTest, ExpectNonFatalFailureOnAllThreads) {
+  EXPECT_NONFATAL_FAILURE_ON_ALL_THREADS(
+      AddFailureInOtherThread(NONFATAL_FAILURE), "Expected non-fatal failure.");
+}
+
+#endif  // GTEST_IS_THREADSAFE
+
+// Tests the TestProperty class.
+
+TEST(TestPropertyTest, ConstructorWorks) {
+  const TestProperty property("key", "value");
+  EXPECT_STREQ("key", property.key());
+  EXPECT_STREQ("value", property.value());
+}
+
+TEST(TestPropertyTest, SetValue) {
+  TestProperty property("key", "value_1");
+  EXPECT_STREQ("key", property.key());
+  property.SetValue("value_2");
+  EXPECT_STREQ("key", property.key());
+  EXPECT_STREQ("value_2", property.value());
+}
+
+// Tests the TestResult class
+
+// The test fixture for testing TestResult.
+class TestResultTest : public Test {
+ protected:
+  typedef std::vector<TestPartResult> TPRVector;
+
+  // We make use of 2 TestPartResult objects,
+  TestPartResult * pr1, * pr2;
+
+  // ... and 3 TestResult objects.
+  TestResult * r0, * r1, * r2;
+
+  void SetUp() override {
+    // pr1 is for success.
+    pr1 = new TestPartResult(TestPartResult::kSuccess,
+                             "foo/bar.cc",
+                             10,
+                             "Success!");
+
+    // pr2 is for fatal failure.
+    pr2 = new TestPartResult(TestPartResult::kFatalFailure,
+                             "foo/bar.cc",
+                             -1,  // This line number means "unknown"
+                             "Failure!");
+
+    // Creates the TestResult objects.
+    r0 = new TestResult();
+    r1 = new TestResult();
+    r2 = new TestResult();
+
+    // In order to test TestResult, we need to modify its internal
+    // state, in particular the TestPartResult vector it holds.
+    // test_part_results() returns a const reference to this vector.
+    // We cast it to a non-const object s.t. it can be modified
+    TPRVector* results1 = const_cast<TPRVector*>(
+        &TestResultAccessor::test_part_results(*r1));
+    TPRVector* results2 = const_cast<TPRVector*>(
+        &TestResultAccessor::test_part_results(*r2));
+
+    // r0 is an empty TestResult.
+
+    // r1 contains a single SUCCESS TestPartResult.
+    results1->push_back(*pr1);
+
+    // r2 contains a SUCCESS, and a FAILURE.
+    results2->push_back(*pr1);
+    results2->push_back(*pr2);
+  }
+
+  void TearDown() override {
+    delete pr1;
+    delete pr2;
+
+    delete r0;
+    delete r1;
+    delete r2;
+  }
+
+  // Helper that compares two TestPartResults.
+  static void CompareTestPartResult(const TestPartResult& expected,
+                                    const TestPartResult& actual) {
+    EXPECT_EQ(expected.type(), actual.type());
+    EXPECT_STREQ(expected.file_name(), actual.file_name());
+    EXPECT_EQ(expected.line_number(), actual.line_number());
+    EXPECT_STREQ(expected.summary(), actual.summary());
+    EXPECT_STREQ(expected.message(), actual.message());
+    EXPECT_EQ(expected.passed(), actual.passed());
+    EXPECT_EQ(expected.failed(), actual.failed());
+    EXPECT_EQ(expected.nonfatally_failed(), actual.nonfatally_failed());
+    EXPECT_EQ(expected.fatally_failed(), actual.fatally_failed());
+  }
+};
+
+// Tests TestResult::total_part_count().
+TEST_F(TestResultTest, total_part_count) {
+  ASSERT_EQ(0, r0->total_part_count());
+  ASSERT_EQ(1, r1->total_part_count());
+  ASSERT_EQ(2, r2->total_part_count());
+}
+
+// Tests TestResult::Passed().
+TEST_F(TestResultTest, Passed) {
+  ASSERT_TRUE(r0->Passed());
+  ASSERT_TRUE(r1->Passed());
+  ASSERT_FALSE(r2->Passed());
+}
+
+// Tests TestResult::Failed().
+TEST_F(TestResultTest, Failed) {
+  ASSERT_FALSE(r0->Failed());
+  ASSERT_FALSE(r1->Failed());
+  ASSERT_TRUE(r2->Failed());
+}
+
+// Tests TestResult::GetTestPartResult().
+
+typedef TestResultTest TestResultDeathTest;
+
+TEST_F(TestResultDeathTest, GetTestPartResult) {
+  CompareTestPartResult(*pr1, r2->GetTestPartResult(0));
+  CompareTestPartResult(*pr2, r2->GetTestPartResult(1));
+  EXPECT_DEATH_IF_SUPPORTED(r2->GetTestPartResult(2), "");
+  EXPECT_DEATH_IF_SUPPORTED(r2->GetTestPartResult(-1), "");
+}
+
+// Tests TestResult has no properties when none are added.
+TEST(TestResultPropertyTest, NoPropertiesFoundWhenNoneAreAdded) {
+  TestResult test_result;
+  ASSERT_EQ(0, test_result.test_property_count());
+}
+
+// Tests TestResult has the expected property when added.
+TEST(TestResultPropertyTest, OnePropertyFoundWhenAdded) {
+  TestResult test_result;
+  TestProperty property("key_1", "1");
+  TestResultAccessor::RecordProperty(&test_result, "testcase", property);
+  ASSERT_EQ(1, test_result.test_property_count());
+  const TestProperty& actual_property = test_result.GetTestProperty(0);
+  EXPECT_STREQ("key_1", actual_property.key());
+  EXPECT_STREQ("1", actual_property.value());
+}
+
+// Tests TestResult has multiple properties when added.
+TEST(TestResultPropertyTest, MultiplePropertiesFoundWhenAdded) {
+  TestResult test_result;
+  TestProperty property_1("key_1", "1");
+  TestProperty property_2("key_2", "2");
+  TestResultAccessor::RecordProperty(&test_result, "testcase", property_1);
+  TestResultAccessor::RecordProperty(&test_result, "testcase", property_2);
+  ASSERT_EQ(2, test_result.test_property_count());
+  const TestProperty& actual_property_1 = test_result.GetTestProperty(0);
+  EXPECT_STREQ("key_1", actual_property_1.key());
+  EXPECT_STREQ("1", actual_property_1.value());
+
+  const TestProperty& actual_property_2 = test_result.GetTestProperty(1);
+  EXPECT_STREQ("key_2", actual_property_2.key());
+  EXPECT_STREQ("2", actual_property_2.value());
+}
+
+// Tests TestResult::RecordProperty() overrides values for duplicate keys.
+TEST(TestResultPropertyTest, OverridesValuesForDuplicateKeys) {
+  TestResult test_result;
+  TestProperty property_1_1("key_1", "1");
+  TestProperty property_2_1("key_2", "2");
+  TestProperty property_1_2("key_1", "12");
+  TestProperty property_2_2("key_2", "22");
+  TestResultAccessor::RecordProperty(&test_result, "testcase", property_1_1);
+  TestResultAccessor::RecordProperty(&test_result, "testcase", property_2_1);
+  TestResultAccessor::RecordProperty(&test_result, "testcase", property_1_2);
+  TestResultAccessor::RecordProperty(&test_result, "testcase", property_2_2);
+
+  ASSERT_EQ(2, test_result.test_property_count());
+  const TestProperty& actual_property_1 = test_result.GetTestProperty(0);
+  EXPECT_STREQ("key_1", actual_property_1.key());
+  EXPECT_STREQ("12", actual_property_1.value());
+
+  const TestProperty& actual_property_2 = test_result.GetTestProperty(1);
+  EXPECT_STREQ("key_2", actual_property_2.key());
+  EXPECT_STREQ("22", actual_property_2.value());
+}
+
+// Tests TestResult::GetTestProperty().
+TEST(TestResultPropertyTest, GetTestProperty) {
+  TestResult test_result;
+  TestProperty property_1("key_1", "1");
+  TestProperty property_2("key_2", "2");
+  TestProperty property_3("key_3", "3");
+  TestResultAccessor::RecordProperty(&test_result, "testcase", property_1);
+  TestResultAccessor::RecordProperty(&test_result, "testcase", property_2);
+  TestResultAccessor::RecordProperty(&test_result, "testcase", property_3);
+
+  const TestProperty& fetched_property_1 = test_result.GetTestProperty(0);
+  const TestProperty& fetched_property_2 = test_result.GetTestProperty(1);
+  const TestProperty& fetched_property_3 = test_result.GetTestProperty(2);
+
+  EXPECT_STREQ("key_1", fetched_property_1.key());
+  EXPECT_STREQ("1", fetched_property_1.value());
+
+  EXPECT_STREQ("key_2", fetched_property_2.key());
+  EXPECT_STREQ("2", fetched_property_2.value());
+
+  EXPECT_STREQ("key_3", fetched_property_3.key());
+  EXPECT_STREQ("3", fetched_property_3.value());
+
+  EXPECT_DEATH_IF_SUPPORTED(test_result.GetTestProperty(3), "");
+  EXPECT_DEATH_IF_SUPPORTED(test_result.GetTestProperty(-1), "");
+}
+
+// Tests the Test class.
+//
+// It's difficult to test every public method of this class (we are
+// already stretching the limit of Google Test by using it to test itself!).
+// Fortunately, we don't have to do that, as we are already testing
+// the functionalities of the Test class extensively by using Google Test
+// alone.
+//
+// Therefore, this section only contains one test.
+
+// Tests that GTestFlagSaver works on Windows and Mac.
+
+class GTestFlagSaverTest : public Test {
+ protected:
+  // Saves the Google Test flags such that we can restore them later, and
+  // then sets them to their default values.  This will be called
+  // before the first test in this test case is run.
+  static void SetUpTestSuite() {
+    saver_ = new GTestFlagSaver;
+
+    GTEST_FLAG(also_run_disabled_tests) = false;
+    GTEST_FLAG(break_on_failure) = false;
+    GTEST_FLAG(catch_exceptions) = false;
+    GTEST_FLAG(death_test_use_fork) = false;
+    GTEST_FLAG(color) = "auto";
+    GTEST_FLAG(filter) = "";
+    GTEST_FLAG(list_tests) = false;
+    GTEST_FLAG(output) = "";
+    GTEST_FLAG(print_time) = true;
+    GTEST_FLAG(random_seed) = 0;
+    GTEST_FLAG(repeat) = 1;
+    GTEST_FLAG(shuffle) = false;
+    GTEST_FLAG(stack_trace_depth) = kMaxStackTraceDepth;
+    GTEST_FLAG(stream_result_to) = "";
+    GTEST_FLAG(throw_on_failure) = false;
+  }
+
+  // Restores the Google Test flags that the tests have modified.  This will
+  // be called after the last test in this test case is run.
+  static void TearDownTestSuite() {
+    delete saver_;
+    saver_ = nullptr;
+  }
+
+  // Verifies that the Google Test flags have their default values, and then
+  // modifies each of them.
+  void VerifyAndModifyFlags() {
+    EXPECT_FALSE(GTEST_FLAG(also_run_disabled_tests));
+    EXPECT_FALSE(GTEST_FLAG(break_on_failure));
+    EXPECT_FALSE(GTEST_FLAG(catch_exceptions));
+    EXPECT_STREQ("auto", GTEST_FLAG(color).c_str());
+    EXPECT_FALSE(GTEST_FLAG(death_test_use_fork));
+    EXPECT_STREQ("", GTEST_FLAG(filter).c_str());
+    EXPECT_FALSE(GTEST_FLAG(list_tests));
+    EXPECT_STREQ("", GTEST_FLAG(output).c_str());
+    EXPECT_TRUE(GTEST_FLAG(print_time));
+    EXPECT_EQ(0, GTEST_FLAG(random_seed));
+    EXPECT_EQ(1, GTEST_FLAG(repeat));
+    EXPECT_FALSE(GTEST_FLAG(shuffle));
+    EXPECT_EQ(kMaxStackTraceDepth, GTEST_FLAG(stack_trace_depth));
+    EXPECT_STREQ("", GTEST_FLAG(stream_result_to).c_str());
+    EXPECT_FALSE(GTEST_FLAG(throw_on_failure));
+
+    GTEST_FLAG(also_run_disabled_tests) = true;
+    GTEST_FLAG(break_on_failure) = true;
+    GTEST_FLAG(catch_exceptions) = true;
+    GTEST_FLAG(color) = "no";
+    GTEST_FLAG(death_test_use_fork) = true;
+    GTEST_FLAG(filter) = "abc";
+    GTEST_FLAG(list_tests) = true;
+    GTEST_FLAG(output) = "xml:foo.xml";
+    GTEST_FLAG(print_time) = false;
+    GTEST_FLAG(random_seed) = 1;
+    GTEST_FLAG(repeat) = 100;
+    GTEST_FLAG(shuffle) = true;
+    GTEST_FLAG(stack_trace_depth) = 1;
+    GTEST_FLAG(stream_result_to) = "localhost:1234";
+    GTEST_FLAG(throw_on_failure) = true;
+  }
+
+ private:
+  // For saving Google Test flags during this test case.
+  static GTestFlagSaver* saver_;
+};
+
+GTestFlagSaver* GTestFlagSaverTest::saver_ = nullptr;
+
+// Google Test doesn't guarantee the order of tests.  The following two
+// tests are designed to work regardless of their order.
+
+// Modifies the Google Test flags in the test body.
+TEST_F(GTestFlagSaverTest, ModifyGTestFlags) {
+  VerifyAndModifyFlags();
+}
+
+// Verifies that the Google Test flags in the body of the previous test were
+// restored to their original values.
+TEST_F(GTestFlagSaverTest, VerifyGTestFlags) {
+  VerifyAndModifyFlags();
+}
+
+// Sets an environment variable with the given name to the given
+// value.  If the value argument is "", unsets the environment
+// variable.  The caller must ensure that both arguments are not NULL.
+static void SetEnv(const char* name, const char* value) {
+#if GTEST_OS_WINDOWS_MOBILE
+  // Environment variables are not supported on Windows CE.
+  return;
+#elif defined(__BORLANDC__) || defined(__SunOS_5_8) || defined(__SunOS_5_9)
+  // C++Builder's putenv only stores a pointer to its parameter; we have to
+  // ensure that the string remains valid as long as it might be needed.
+  // We use an std::map to do so.
+  static std::map<std::string, std::string*> added_env;
+
+  // Because putenv stores a pointer to the string buffer, we can't delete the
+  // previous string (if present) until after it's replaced.
+  std::string *prev_env = NULL;
+  if (added_env.find(name) != added_env.end()) {
+    prev_env = added_env[name];
+  }
+  added_env[name] = new std::string(
+      (Message() << name << "=" << value).GetString());
+
+  // The standard signature of putenv accepts a 'char*' argument. Other
+  // implementations, like C++Builder's, accept a 'const char*'.
+  // We cast away the 'const' since that would work for both variants.
+  putenv(const_cast<char*>(added_env[name]->c_str()));
+  delete prev_env;
+#elif GTEST_OS_WINDOWS  // If we are on Windows proper.
+  _putenv((Message() << name << "=" << value).GetString().c_str());
+#else
+  if (*value == '\0') {
+    unsetenv(name);
+  } else {
+    setenv(name, value, 1);
+  }
+#endif  // GTEST_OS_WINDOWS_MOBILE
+}
+
+#if !GTEST_OS_WINDOWS_MOBILE
+// Environment variables are not supported on Windows CE.
+
+using testing::internal::Int32FromGTestEnv;
+
+// Tests Int32FromGTestEnv().
+
+// Tests that Int32FromGTestEnv() returns the default value when the
+// environment variable is not set.
+TEST(Int32FromGTestEnvTest, ReturnsDefaultWhenVariableIsNotSet) {
+  SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "");
+  EXPECT_EQ(10, Int32FromGTestEnv("temp", 10));
+}
+
+# if !defined(GTEST_GET_INT32_FROM_ENV_)
+
+// Tests that Int32FromGTestEnv() returns the default value when the
+// environment variable overflows as an Int32.
+TEST(Int32FromGTestEnvTest, ReturnsDefaultWhenValueOverflows) {
+  printf("(expecting 2 warnings)\n");
+
+  SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "12345678987654321");
+  EXPECT_EQ(20, Int32FromGTestEnv("temp", 20));
+
+  SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "-12345678987654321");
+  EXPECT_EQ(30, Int32FromGTestEnv("temp", 30));
+}
+
+// Tests that Int32FromGTestEnv() returns the default value when the
+// environment variable does not represent a valid decimal integer.
+TEST(Int32FromGTestEnvTest, ReturnsDefaultWhenValueIsInvalid) {
+  printf("(expecting 2 warnings)\n");
+
+  SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "A1");
+  EXPECT_EQ(40, Int32FromGTestEnv("temp", 40));
+
+  SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "12X");
+  EXPECT_EQ(50, Int32FromGTestEnv("temp", 50));
+}
+
+# endif  // !defined(GTEST_GET_INT32_FROM_ENV_)
+
+// Tests that Int32FromGTestEnv() parses and returns the value of the
+// environment variable when it represents a valid decimal integer in
+// the range of an Int32.
+TEST(Int32FromGTestEnvTest, ParsesAndReturnsValidValue) {
+  SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "123");
+  EXPECT_EQ(123, Int32FromGTestEnv("temp", 0));
+
+  SetEnv(GTEST_FLAG_PREFIX_UPPER_ "TEMP", "-321");
+  EXPECT_EQ(-321, Int32FromGTestEnv("temp", 0));
+}
+#endif  // !GTEST_OS_WINDOWS_MOBILE
+
+// Tests ParseInt32Flag().
+
+// Tests that ParseInt32Flag() returns false and doesn't change the
+// output value when the flag has wrong format
+TEST(ParseInt32FlagTest, ReturnsFalseForInvalidFlag) {
+  Int32 value = 123;
+  EXPECT_FALSE(ParseInt32Flag("--a=100", "b", &value));
+  EXPECT_EQ(123, value);
+
+  EXPECT_FALSE(ParseInt32Flag("a=100", "a", &value));
+  EXPECT_EQ(123, value);
+}
+
+// Tests that ParseInt32Flag() returns false and doesn't change the
+// output value when the flag overflows as an Int32.
+TEST(ParseInt32FlagTest, ReturnsDefaultWhenValueOverflows) {
+  printf("(expecting 2 warnings)\n");
+
+  Int32 value = 123;
+  EXPECT_FALSE(ParseInt32Flag("--abc=12345678987654321", "abc", &value));
+  EXPECT_EQ(123, value);
+
+  EXPECT_FALSE(ParseInt32Flag("--abc=-12345678987654321", "abc", &value));
+  EXPECT_EQ(123, value);
+}
+
+// Tests that ParseInt32Flag() returns false and doesn't change the
+// output value when the flag does not represent a valid decimal
+// integer.
+TEST(ParseInt32FlagTest, ReturnsDefaultWhenValueIsInvalid) {
+  printf("(expecting 2 warnings)\n");
+
+  Int32 value = 123;
+  EXPECT_FALSE(ParseInt32Flag("--abc=A1", "abc", &value));
+  EXPECT_EQ(123, value);
+
+  EXPECT_FALSE(ParseInt32Flag("--abc=12X", "abc", &value));
+  EXPECT_EQ(123, value);
+}
+
+// Tests that ParseInt32Flag() parses the value of the flag and
+// returns true when the flag represents a valid decimal integer in
+// the range of an Int32.
+TEST(ParseInt32FlagTest, ParsesAndReturnsValidValue) {
+  Int32 value = 123;
+  EXPECT_TRUE(ParseInt32Flag("--" GTEST_FLAG_PREFIX_ "abc=456", "abc", &value));
+  EXPECT_EQ(456, value);
+
+  EXPECT_TRUE(ParseInt32Flag("--" GTEST_FLAG_PREFIX_ "abc=-789",
+                             "abc", &value));
+  EXPECT_EQ(-789, value);
+}
+
+// Tests that Int32FromEnvOrDie() parses the value of the var or
+// returns the correct default.
+// Environment variables are not supported on Windows CE.
+#if !GTEST_OS_WINDOWS_MOBILE
+TEST(Int32FromEnvOrDieTest, ParsesAndReturnsValidValue) {
+  EXPECT_EQ(333, Int32FromEnvOrDie(GTEST_FLAG_PREFIX_UPPER_ "UnsetVar", 333));
+  SetEnv(GTEST_FLAG_PREFIX_UPPER_ "UnsetVar", "123");
+  EXPECT_EQ(123, Int32FromEnvOrDie(GTEST_FLAG_PREFIX_UPPER_ "UnsetVar", 333));
+  SetEnv(GTEST_FLAG_PREFIX_UPPER_ "UnsetVar", "-123");
+  EXPECT_EQ(-123, Int32FromEnvOrDie(GTEST_FLAG_PREFIX_UPPER_ "UnsetVar", 333));
+}
+#endif  // !GTEST_OS_WINDOWS_MOBILE
+
+// Tests that Int32FromEnvOrDie() aborts with an error message
+// if the variable is not an Int32.
+TEST(Int32FromEnvOrDieDeathTest, AbortsOnFailure) {
+  SetEnv(GTEST_FLAG_PREFIX_UPPER_ "VAR", "xxx");
+  EXPECT_DEATH_IF_SUPPORTED(
+      Int32FromEnvOrDie(GTEST_FLAG_PREFIX_UPPER_ "VAR", 123),
+      ".*");
+}
+
+// Tests that Int32FromEnvOrDie() aborts with an error message
+// if the variable cannot be represented by an Int32.
+TEST(Int32FromEnvOrDieDeathTest, AbortsOnInt32Overflow) {
+  SetEnv(GTEST_FLAG_PREFIX_UPPER_ "VAR", "1234567891234567891234");
+  EXPECT_DEATH_IF_SUPPORTED(
+      Int32FromEnvOrDie(GTEST_FLAG_PREFIX_UPPER_ "VAR", 123),
+      ".*");
+}
+
+// Tests that ShouldRunTestOnShard() selects all tests
+// where there is 1 shard.
+TEST(ShouldRunTestOnShardTest, IsPartitionWhenThereIsOneShard) {
+  EXPECT_TRUE(ShouldRunTestOnShard(1, 0, 0));
+  EXPECT_TRUE(ShouldRunTestOnShard(1, 0, 1));
+  EXPECT_TRUE(ShouldRunTestOnShard(1, 0, 2));
+  EXPECT_TRUE(ShouldRunTestOnShard(1, 0, 3));
+  EXPECT_TRUE(ShouldRunTestOnShard(1, 0, 4));
+}
+
+class ShouldShardTest : public testing::Test {
+ protected:
+  void SetUp() override {
+    index_var_ = GTEST_FLAG_PREFIX_UPPER_ "INDEX";
+    total_var_ = GTEST_FLAG_PREFIX_UPPER_ "TOTAL";
+  }
+
+  void TearDown() override {
+    SetEnv(index_var_, "");
+    SetEnv(total_var_, "");
+  }
+
+  const char* index_var_;
+  const char* total_var_;
+};
+
+// Tests that sharding is disabled if neither of the environment variables
+// are set.
+TEST_F(ShouldShardTest, ReturnsFalseWhenNeitherEnvVarIsSet) {
+  SetEnv(index_var_, "");
+  SetEnv(total_var_, "");
+
+  EXPECT_FALSE(ShouldShard(total_var_, index_var_, false));
+  EXPECT_FALSE(ShouldShard(total_var_, index_var_, true));
+}
+
+// Tests that sharding is not enabled if total_shards  == 1.
+TEST_F(ShouldShardTest, ReturnsFalseWhenTotalShardIsOne) {
+  SetEnv(index_var_, "0");
+  SetEnv(total_var_, "1");
+  EXPECT_FALSE(ShouldShard(total_var_, index_var_, false));
+  EXPECT_FALSE(ShouldShard(total_var_, index_var_, true));
+}
+
+// Tests that sharding is enabled if total_shards > 1 and
+// we are not in a death test subprocess.
+// Environment variables are not supported on Windows CE.
+#if !GTEST_OS_WINDOWS_MOBILE
+TEST_F(ShouldShardTest, WorksWhenShardEnvVarsAreValid) {
+  SetEnv(index_var_, "4");
+  SetEnv(total_var_, "22");
+  EXPECT_TRUE(ShouldShard(total_var_, index_var_, false));
+  EXPECT_FALSE(ShouldShard(total_var_, index_var_, true));
+
+  SetEnv(index_var_, "8");
+  SetEnv(total_var_, "9");
+  EXPECT_TRUE(ShouldShard(total_var_, index_var_, false));
+  EXPECT_FALSE(ShouldShard(total_var_, index_var_, true));
+
+  SetEnv(index_var_, "0");
+  SetEnv(total_var_, "9");
+  EXPECT_TRUE(ShouldShard(total_var_, index_var_, false));
+  EXPECT_FALSE(ShouldShard(total_var_, index_var_, true));
+}
+#endif  // !GTEST_OS_WINDOWS_MOBILE
+
+// Tests that we exit in error if the sharding values are not valid.
+
+typedef ShouldShardTest ShouldShardDeathTest;
+
+TEST_F(ShouldShardDeathTest, AbortsWhenShardingEnvVarsAreInvalid) {
+  SetEnv(index_var_, "4");
+  SetEnv(total_var_, "4");
+  EXPECT_DEATH_IF_SUPPORTED(ShouldShard(total_var_, index_var_, false), ".*");
+
+  SetEnv(index_var_, "4");
+  SetEnv(total_var_, "-2");
+  EXPECT_DEATH_IF_SUPPORTED(ShouldShard(total_var_, index_var_, false), ".*");
+
+  SetEnv(index_var_, "5");
+  SetEnv(total_var_, "");
+  EXPECT_DEATH_IF_SUPPORTED(ShouldShard(total_var_, index_var_, false), ".*");
+
+  SetEnv(index_var_, "");
+  SetEnv(total_var_, "5");
+  EXPECT_DEATH_IF_SUPPORTED(ShouldShard(total_var_, index_var_, false), ".*");
+}
+
+// Tests that ShouldRunTestOnShard is a partition when 5
+// shards are used.
+TEST(ShouldRunTestOnShardTest, IsPartitionWhenThereAreFiveShards) {
+  // Choose an arbitrary number of tests and shards.
+  const int num_tests = 17;
+  const int num_shards = 5;
+
+  // Check partitioning: each test should be on exactly 1 shard.
+  for (int test_id = 0; test_id < num_tests; test_id++) {
+    int prev_selected_shard_index = -1;
+    for (int shard_index = 0; shard_index < num_shards; shard_index++) {
+      if (ShouldRunTestOnShard(num_shards, shard_index, test_id)) {
+        if (prev_selected_shard_index < 0) {
+          prev_selected_shard_index = shard_index;
+        } else {
+          ADD_FAILURE() << "Shard " << prev_selected_shard_index << " and "
+            << shard_index << " are both selected to run test " << test_id;
+        }
+      }
+    }
+  }
+
+  // Check balance: This is not required by the sharding protocol, but is a
+  // desirable property for performance.
+  for (int shard_index = 0; shard_index < num_shards; shard_index++) {
+    int num_tests_on_shard = 0;
+    for (int test_id = 0; test_id < num_tests; test_id++) {
+      num_tests_on_shard +=
+        ShouldRunTestOnShard(num_shards, shard_index, test_id);
+    }
+    EXPECT_GE(num_tests_on_shard, num_tests / num_shards);
+  }
+}
+
+// For the same reason we are not explicitly testing everything in the
+// Test class, there are no separate tests for the following classes
+// (except for some trivial cases):
+//
+//   TestSuite, UnitTest, UnitTestResultPrinter.
+//
+// Similarly, there are no separate tests for the following macros:
+//
+//   TEST, TEST_F, RUN_ALL_TESTS
+
+TEST(UnitTestTest, CanGetOriginalWorkingDir) {
+  ASSERT_TRUE(UnitTest::GetInstance()->original_working_dir() != nullptr);
+  EXPECT_STRNE(UnitTest::GetInstance()->original_working_dir(), "");
+}
+
+TEST(UnitTestTest, ReturnsPlausibleTimestamp) {
+  EXPECT_LT(0, UnitTest::GetInstance()->start_timestamp());
+  EXPECT_LE(UnitTest::GetInstance()->start_timestamp(), GetTimeInMillis());
+}
+
+// When a property using a reserved key is supplied to this function, it
+// tests that a non-fatal failure is added, a fatal failure is not added,
+// and that the property is not recorded.
+void ExpectNonFatalFailureRecordingPropertyWithReservedKey(
+    const TestResult& test_result, const char* key) {
+  EXPECT_NONFATAL_FAILURE(Test::RecordProperty(key, "1"), "Reserved key");
+  ASSERT_EQ(0, test_result.test_property_count()) << "Property for key '" << key
+                                                  << "' recorded unexpectedly.";
+}
+
+void ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
+    const char* key) {
+  const TestInfo* test_info = UnitTest::GetInstance()->current_test_info();
+  ASSERT_TRUE(test_info != nullptr);
+  ExpectNonFatalFailureRecordingPropertyWithReservedKey(*test_info->result(),
+                                                        key);
+}
+
+void ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
+    const char* key) {
+  const testing::TestSuite* test_suite =
+      UnitTest::GetInstance()->current_test_suite();
+  ASSERT_TRUE(test_suite != nullptr);
+  ExpectNonFatalFailureRecordingPropertyWithReservedKey(
+      test_suite->ad_hoc_test_result(), key);
+}
+
+void ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
+    const char* key) {
+  ExpectNonFatalFailureRecordingPropertyWithReservedKey(
+      UnitTest::GetInstance()->ad_hoc_test_result(), key);
+}
+
+// Tests that property recording functions in UnitTest outside of tests
+// functions correcly.  Creating a separate instance of UnitTest ensures it
+// is in a state similar to the UnitTest's singleton's between tests.
+class UnitTestRecordPropertyTest :
+    public testing::internal::UnitTestRecordPropertyTestHelper {
+ public:
+  static void SetUpTestSuite() {
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
+        "disabled");
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
+        "errors");
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
+        "failures");
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
+        "name");
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
+        "tests");
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTestSuite(
+        "time");
+
+    Test::RecordProperty("test_case_key_1", "1");
+
+    const testing::TestSuite* test_suite =
+        UnitTest::GetInstance()->current_test_suite();
+
+    ASSERT_TRUE(test_suite != nullptr);
+
+    ASSERT_EQ(1, test_suite->ad_hoc_test_result().test_property_count());
+    EXPECT_STREQ("test_case_key_1",
+                 test_suite->ad_hoc_test_result().GetTestProperty(0).key());
+    EXPECT_STREQ("1",
+                 test_suite->ad_hoc_test_result().GetTestProperty(0).value());
+  }
+};
+
+// Tests TestResult has the expected property when added.
+TEST_F(UnitTestRecordPropertyTest, OnePropertyFoundWhenAdded) {
+  UnitTestRecordProperty("key_1", "1");
+
+  ASSERT_EQ(1, unit_test_.ad_hoc_test_result().test_property_count());
+
+  EXPECT_STREQ("key_1",
+               unit_test_.ad_hoc_test_result().GetTestProperty(0).key());
+  EXPECT_STREQ("1",
+               unit_test_.ad_hoc_test_result().GetTestProperty(0).value());
+}
+
+// Tests TestResult has multiple properties when added.
+TEST_F(UnitTestRecordPropertyTest, MultiplePropertiesFoundWhenAdded) {
+  UnitTestRecordProperty("key_1", "1");
+  UnitTestRecordProperty("key_2", "2");
+
+  ASSERT_EQ(2, unit_test_.ad_hoc_test_result().test_property_count());
+
+  EXPECT_STREQ("key_1",
+               unit_test_.ad_hoc_test_result().GetTestProperty(0).key());
+  EXPECT_STREQ("1", unit_test_.ad_hoc_test_result().GetTestProperty(0).value());
+
+  EXPECT_STREQ("key_2",
+               unit_test_.ad_hoc_test_result().GetTestProperty(1).key());
+  EXPECT_STREQ("2", unit_test_.ad_hoc_test_result().GetTestProperty(1).value());
+}
+
+// Tests TestResult::RecordProperty() overrides values for duplicate keys.
+TEST_F(UnitTestRecordPropertyTest, OverridesValuesForDuplicateKeys) {
+  UnitTestRecordProperty("key_1", "1");
+  UnitTestRecordProperty("key_2", "2");
+  UnitTestRecordProperty("key_1", "12");
+  UnitTestRecordProperty("key_2", "22");
+
+  ASSERT_EQ(2, unit_test_.ad_hoc_test_result().test_property_count());
+
+  EXPECT_STREQ("key_1",
+               unit_test_.ad_hoc_test_result().GetTestProperty(0).key());
+  EXPECT_STREQ("12",
+               unit_test_.ad_hoc_test_result().GetTestProperty(0).value());
+
+  EXPECT_STREQ("key_2",
+               unit_test_.ad_hoc_test_result().GetTestProperty(1).key());
+  EXPECT_STREQ("22",
+               unit_test_.ad_hoc_test_result().GetTestProperty(1).value());
+}
+
+TEST_F(UnitTestRecordPropertyTest,
+       AddFailureInsideTestsWhenUsingTestSuiteReservedKeys) {
+  ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
+      "name");
+  ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
+      "value_param");
+  ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
+      "type_param");
+  ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
+      "status");
+  ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
+      "time");
+  ExpectNonFatalFailureRecordingPropertyWithReservedKeyForCurrentTest(
+      "classname");
+}
+
+TEST_F(UnitTestRecordPropertyTest,
+       AddRecordWithReservedKeysGeneratesCorrectPropertyList) {
+  EXPECT_NONFATAL_FAILURE(
+      Test::RecordProperty("name", "1"),
+      "'classname', 'name', 'status', 'time', 'type_param', 'value_param',"
+      " 'file', and 'line' are reserved");
+}
+
+class UnitTestRecordPropertyTestEnvironment : public Environment {
+ public:
+  void TearDown() override {
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
+        "tests");
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
+        "failures");
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
+        "disabled");
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
+        "errors");
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
+        "name");
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
+        "timestamp");
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
+        "time");
+    ExpectNonFatalFailureRecordingPropertyWithReservedKeyOutsideOfTestSuite(
+        "random_seed");
+  }
+};
+
+// This will test property recording outside of any test or test case.
+static Environment* record_property_env GTEST_ATTRIBUTE_UNUSED_ =
+    AddGlobalTestEnvironment(new UnitTestRecordPropertyTestEnvironment);
+
+// This group of tests is for predicate assertions (ASSERT_PRED*, etc)
+// of various arities.  They do not attempt to be exhaustive.  Rather,
+// view them as smoke tests that can be easily reviewed and verified.
+// A more complete set of tests for predicate assertions can be found
+// in gtest_pred_impl_unittest.cc.
+
+// First, some predicates and predicate-formatters needed by the tests.
+
+// Returns true if and only if the argument is an even number.
+bool IsEven(int n) {
+  return (n % 2) == 0;
+}
+
+// A functor that returns true if and only if the argument is an even number.
+struct IsEvenFunctor {
+  bool operator()(int n) { return IsEven(n); }
+};
+
+// A predicate-formatter function that asserts the argument is an even
+// number.
+AssertionResult AssertIsEven(const char* expr, int n) {
+  if (IsEven(n)) {
+    return AssertionSuccess();
+  }
+
+  Message msg;
+  msg << expr << " evaluates to " << n << ", which is not even.";
+  return AssertionFailure(msg);
+}
+
+// A predicate function that returns AssertionResult for use in
+// EXPECT/ASSERT_TRUE/FALSE.
+AssertionResult ResultIsEven(int n) {
+  if (IsEven(n))
+    return AssertionSuccess() << n << " is even";
+  else
+    return AssertionFailure() << n << " is odd";
+}
+
+// A predicate function that returns AssertionResult but gives no
+// explanation why it succeeds. Needed for testing that
+// EXPECT/ASSERT_FALSE handles such functions correctly.
+AssertionResult ResultIsEvenNoExplanation(int n) {
+  if (IsEven(n))
+    return AssertionSuccess();
+  else
+    return AssertionFailure() << n << " is odd";
+}
+
+// A predicate-formatter functor that asserts the argument is an even
+// number.
+struct AssertIsEvenFunctor {
+  AssertionResult operator()(const char* expr, int n) {
+    return AssertIsEven(expr, n);
+  }
+};
+
+// Returns true if and only if the sum of the arguments is an even number.
+bool SumIsEven2(int n1, int n2) {
+  return IsEven(n1 + n2);
+}
+
+// A functor that returns true if and only if the sum of the arguments is an
+// even number.
+struct SumIsEven3Functor {
+  bool operator()(int n1, int n2, int n3) {
+    return IsEven(n1 + n2 + n3);
+  }
+};
+
+// A predicate-formatter function that asserts the sum of the
+// arguments is an even number.
+AssertionResult AssertSumIsEven4(
+    const char* e1, const char* e2, const char* e3, const char* e4,
+    int n1, int n2, int n3, int n4) {
+  const int sum = n1 + n2 + n3 + n4;
+  if (IsEven(sum)) {
+    return AssertionSuccess();
+  }
+
+  Message msg;
+  msg << e1 << " + " << e2 << " + " << e3 << " + " << e4
+      << " (" << n1 << " + " << n2 << " + " << n3 << " + " << n4
+      << ") evaluates to " << sum << ", which is not even.";
+  return AssertionFailure(msg);
+}
+
+// A predicate-formatter functor that asserts the sum of the arguments
+// is an even number.
+struct AssertSumIsEven5Functor {
+  AssertionResult operator()(
+      const char* e1, const char* e2, const char* e3, const char* e4,
+      const char* e5, int n1, int n2, int n3, int n4, int n5) {
+    const int sum = n1 + n2 + n3 + n4 + n5;
+    if (IsEven(sum)) {
+      return AssertionSuccess();
+    }
+
+    Message msg;
+    msg << e1 << " + " << e2 << " + " << e3 << " + " << e4 << " + " << e5
+        << " ("
+        << n1 << " + " << n2 << " + " << n3 << " + " << n4 << " + " << n5
+        << ") evaluates to " << sum << ", which is not even.";
+    return AssertionFailure(msg);
+  }
+};
+
+
+// Tests unary predicate assertions.
+
+// Tests unary predicate assertions that don't use a custom formatter.
+TEST(Pred1Test, WithoutFormat) {
+  // Success cases.
+  EXPECT_PRED1(IsEvenFunctor(), 2) << "This failure is UNEXPECTED!";
+  ASSERT_PRED1(IsEven, 4);
+
+  // Failure cases.
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED1(IsEven, 5) << "This failure is expected.";
+  }, "This failure is expected.");
+  EXPECT_FATAL_FAILURE(ASSERT_PRED1(IsEvenFunctor(), 5),
+                       "evaluates to false");
+}
+
+// Tests unary predicate assertions that use a custom formatter.
+TEST(Pred1Test, WithFormat) {
+  // Success cases.
+  EXPECT_PRED_FORMAT1(AssertIsEven, 2);
+  ASSERT_PRED_FORMAT1(AssertIsEvenFunctor(), 4)
+    << "This failure is UNEXPECTED!";
+
+  // Failure cases.
+  const int n = 5;
+  EXPECT_NONFATAL_FAILURE(EXPECT_PRED_FORMAT1(AssertIsEvenFunctor(), n),
+                          "n evaluates to 5, which is not even.");
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT1(AssertIsEven, 5) << "This failure is expected.";
+  }, "This failure is expected.");
+}
+
+// Tests that unary predicate assertions evaluates their arguments
+// exactly once.
+TEST(Pred1Test, SingleEvaluationOnFailure) {
+  // A success case.
+  static int n = 0;
+  EXPECT_PRED1(IsEven, n++);
+  EXPECT_EQ(1, n) << "The argument is not evaluated exactly once.";
+
+  // A failure case.
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT1(AssertIsEvenFunctor(), n++)
+        << "This failure is expected.";
+  }, "This failure is expected.");
+  EXPECT_EQ(2, n) << "The argument is not evaluated exactly once.";
+}
+
+
+// Tests predicate assertions whose arity is >= 2.
+
+// Tests predicate assertions that don't use a custom formatter.
+TEST(PredTest, WithoutFormat) {
+  // Success cases.
+  ASSERT_PRED2(SumIsEven2, 2, 4) << "This failure is UNEXPECTED!";
+  EXPECT_PRED3(SumIsEven3Functor(), 4, 6, 8);
+
+  // Failure cases.
+  const int n1 = 1;
+  const int n2 = 2;
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED2(SumIsEven2, n1, n2) << "This failure is expected.";
+  }, "This failure is expected.");
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED3(SumIsEven3Functor(), 1, 2, 4);
+  }, "evaluates to false");
+}
+
+// Tests predicate assertions that use a custom formatter.
+TEST(PredTest, WithFormat) {
+  // Success cases.
+  ASSERT_PRED_FORMAT4(AssertSumIsEven4, 4, 6, 8, 10) <<
+    "This failure is UNEXPECTED!";
+  EXPECT_PRED_FORMAT5(AssertSumIsEven5Functor(), 2, 4, 6, 8, 10);
+
+  // Failure cases.
+  const int n1 = 1;
+  const int n2 = 2;
+  const int n3 = 4;
+  const int n4 = 6;
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT4(AssertSumIsEven4, n1, n2, n3, n4);
+  }, "evaluates to 13, which is not even.");
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT5(AssertSumIsEven5Functor(), 1, 2, 4, 6, 8)
+        << "This failure is expected.";
+  }, "This failure is expected.");
+}
+
+// Tests that predicate assertions evaluates their arguments
+// exactly once.
+TEST(PredTest, SingleEvaluationOnFailure) {
+  // A success case.
+  int n1 = 0;
+  int n2 = 0;
+  EXPECT_PRED2(SumIsEven2, n1++, n2++);
+  EXPECT_EQ(1, n1) << "Argument 1 is not evaluated exactly once.";
+  EXPECT_EQ(1, n2) << "Argument 2 is not evaluated exactly once.";
+
+  // Another success case.
+  n1 = n2 = 0;
+  int n3 = 0;
+  int n4 = 0;
+  int n5 = 0;
+  ASSERT_PRED_FORMAT5(AssertSumIsEven5Functor(),
+                      n1++, n2++, n3++, n4++, n5++)
+                        << "This failure is UNEXPECTED!";
+  EXPECT_EQ(1, n1) << "Argument 1 is not evaluated exactly once.";
+  EXPECT_EQ(1, n2) << "Argument 2 is not evaluated exactly once.";
+  EXPECT_EQ(1, n3) << "Argument 3 is not evaluated exactly once.";
+  EXPECT_EQ(1, n4) << "Argument 4 is not evaluated exactly once.";
+  EXPECT_EQ(1, n5) << "Argument 5 is not evaluated exactly once.";
+
+  // A failure case.
+  n1 = n2 = n3 = 0;
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED3(SumIsEven3Functor(), ++n1, n2++, n3++)
+        << "This failure is expected.";
+  }, "This failure is expected.");
+  EXPECT_EQ(1, n1) << "Argument 1 is not evaluated exactly once.";
+  EXPECT_EQ(1, n2) << "Argument 2 is not evaluated exactly once.";
+  EXPECT_EQ(1, n3) << "Argument 3 is not evaluated exactly once.";
+
+  // Another failure case.
+  n1 = n2 = n3 = n4 = 0;
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT4(AssertSumIsEven4, ++n1, n2++, n3++, n4++);
+  }, "evaluates to 1, which is not even.");
+  EXPECT_EQ(1, n1) << "Argument 1 is not evaluated exactly once.";
+  EXPECT_EQ(1, n2) << "Argument 2 is not evaluated exactly once.";
+  EXPECT_EQ(1, n3) << "Argument 3 is not evaluated exactly once.";
+  EXPECT_EQ(1, n4) << "Argument 4 is not evaluated exactly once.";
+}
+
+// Test predicate assertions for sets
+TEST(PredTest, ExpectPredEvalFailure) {
+  std::set<int> set_a = {2, 1, 3, 4, 5};
+  std::set<int> set_b = {0, 4, 8};
+  const auto compare_sets = [] (std::set<int>, std::set<int>) { return false; };
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_PRED2(compare_sets, set_a, set_b),
+      "compare_sets(set_a, set_b) evaluates to false, where\nset_a evaluates "
+      "to { 1, 2, 3, 4, 5 }\nset_b evaluates to { 0, 4, 8 }");
+}
+
+// Some helper functions for testing using overloaded/template
+// functions with ASSERT_PREDn and EXPECT_PREDn.
+
+bool IsPositive(double x) {
+  return x > 0;
+}
+
+template <typename T>
+bool IsNegative(T x) {
+  return x < 0;
+}
+
+template <typename T1, typename T2>
+bool GreaterThan(T1 x1, T2 x2) {
+  return x1 > x2;
+}
+
+// Tests that overloaded functions can be used in *_PRED* as long as
+// their types are explicitly specified.
+TEST(PredicateAssertionTest, AcceptsOverloadedFunction) {
+  // C++Builder requires C-style casts rather than static_cast.
+  EXPECT_PRED1((bool (*)(int))(IsPositive), 5);  // NOLINT
+  ASSERT_PRED1((bool (*)(double))(IsPositive), 6.0);  // NOLINT
+}
+
+// Tests that template functions can be used in *_PRED* as long as
+// their types are explicitly specified.
+TEST(PredicateAssertionTest, AcceptsTemplateFunction) {
+  EXPECT_PRED1(IsNegative<int>, -5);
+  // Makes sure that we can handle templates with more than one
+  // parameter.
+  ASSERT_PRED2((GreaterThan<int, int>), 5, 0);
+}
+
+
+// Some helper functions for testing using overloaded/template
+// functions with ASSERT_PRED_FORMATn and EXPECT_PRED_FORMATn.
+
+AssertionResult IsPositiveFormat(const char* /* expr */, int n) {
+  return n > 0 ? AssertionSuccess() :
+      AssertionFailure(Message() << "Failure");
+}
+
+AssertionResult IsPositiveFormat(const char* /* expr */, double x) {
+  return x > 0 ? AssertionSuccess() :
+      AssertionFailure(Message() << "Failure");
+}
+
+template <typename T>
+AssertionResult IsNegativeFormat(const char* /* expr */, T x) {
+  return x < 0 ? AssertionSuccess() :
+      AssertionFailure(Message() << "Failure");
+}
+
+template <typename T1, typename T2>
+AssertionResult EqualsFormat(const char* /* expr1 */, const char* /* expr2 */,
+                             const T1& x1, const T2& x2) {
+  return x1 == x2 ? AssertionSuccess() :
+      AssertionFailure(Message() << "Failure");
+}
+
+// Tests that overloaded functions can be used in *_PRED_FORMAT*
+// without explicitly specifying their types.
+TEST(PredicateFormatAssertionTest, AcceptsOverloadedFunction) {
+  EXPECT_PRED_FORMAT1(IsPositiveFormat, 5);
+  ASSERT_PRED_FORMAT1(IsPositiveFormat, 6.0);
+}
+
+// Tests that template functions can be used in *_PRED_FORMAT* without
+// explicitly specifying their types.
+TEST(PredicateFormatAssertionTest, AcceptsTemplateFunction) {
+  EXPECT_PRED_FORMAT1(IsNegativeFormat, -5);
+  ASSERT_PRED_FORMAT2(EqualsFormat, 3, 3);
+}
+
+
+// Tests string assertions.
+
+// Tests ASSERT_STREQ with non-NULL arguments.
+TEST(StringAssertionTest, ASSERT_STREQ) {
+  const char * const p1 = "good";
+  ASSERT_STREQ(p1, p1);
+
+  // Let p2 have the same content as p1, but be at a different address.
+  const char p2[] = "good";
+  ASSERT_STREQ(p1, p2);
+
+  EXPECT_FATAL_FAILURE(ASSERT_STREQ("bad", "good"),
+                       "  \"bad\"\n  \"good\"");
+}
+
+// Tests ASSERT_STREQ with NULL arguments.
+TEST(StringAssertionTest, ASSERT_STREQ_Null) {
+  ASSERT_STREQ(static_cast<const char*>(nullptr), nullptr);
+  EXPECT_FATAL_FAILURE(ASSERT_STREQ(nullptr, "non-null"), "non-null");
+}
+
+// Tests ASSERT_STREQ with NULL arguments.
+TEST(StringAssertionTest, ASSERT_STREQ_Null2) {
+  EXPECT_FATAL_FAILURE(ASSERT_STREQ("non-null", nullptr), "non-null");
+}
+
+// Tests ASSERT_STRNE.
+TEST(StringAssertionTest, ASSERT_STRNE) {
+  ASSERT_STRNE("hi", "Hi");
+  ASSERT_STRNE("Hi", nullptr);
+  ASSERT_STRNE(nullptr, "Hi");
+  ASSERT_STRNE("", nullptr);
+  ASSERT_STRNE(nullptr, "");
+  ASSERT_STRNE("", "Hi");
+  ASSERT_STRNE("Hi", "");
+  EXPECT_FATAL_FAILURE(ASSERT_STRNE("Hi", "Hi"),
+                       "\"Hi\" vs \"Hi\"");
+}
+
+// Tests ASSERT_STRCASEEQ.
+TEST(StringAssertionTest, ASSERT_STRCASEEQ) {
+  ASSERT_STRCASEEQ("hi", "Hi");
+  ASSERT_STRCASEEQ(static_cast<const char*>(nullptr), nullptr);
+
+  ASSERT_STRCASEEQ("", "");
+  EXPECT_FATAL_FAILURE(ASSERT_STRCASEEQ("Hi", "hi2"),
+                       "Ignoring case");
+}
+
+// Tests ASSERT_STRCASENE.
+TEST(StringAssertionTest, ASSERT_STRCASENE) {
+  ASSERT_STRCASENE("hi1", "Hi2");
+  ASSERT_STRCASENE("Hi", nullptr);
+  ASSERT_STRCASENE(nullptr, "Hi");
+  ASSERT_STRCASENE("", nullptr);
+  ASSERT_STRCASENE(nullptr, "");
+  ASSERT_STRCASENE("", "Hi");
+  ASSERT_STRCASENE("Hi", "");
+  EXPECT_FATAL_FAILURE(ASSERT_STRCASENE("Hi", "hi"),
+                       "(ignoring case)");
+}
+
+// Tests *_STREQ on wide strings.
+TEST(StringAssertionTest, STREQ_Wide) {
+  // NULL strings.
+  ASSERT_STREQ(static_cast<const wchar_t*>(nullptr), nullptr);
+
+  // Empty strings.
+  ASSERT_STREQ(L"", L"");
+
+  // Non-null vs NULL.
+  EXPECT_NONFATAL_FAILURE(EXPECT_STREQ(L"non-null", nullptr), "non-null");
+
+  // Equal strings.
+  EXPECT_STREQ(L"Hi", L"Hi");
+
+  // Unequal strings.
+  EXPECT_NONFATAL_FAILURE(EXPECT_STREQ(L"abc", L"Abc"),
+                          "Abc");
+
+  // Strings containing wide characters.
+  EXPECT_NONFATAL_FAILURE(EXPECT_STREQ(L"abc\x8119", L"abc\x8120"),
+                          "abc");
+
+  // The streaming variation.
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_STREQ(L"abc\x8119", L"abc\x8121") << "Expected failure";
+  }, "Expected failure");
+}
+
+// Tests *_STRNE on wide strings.
+TEST(StringAssertionTest, STRNE_Wide) {
+  // NULL strings.
+  EXPECT_NONFATAL_FAILURE(
+      {  // NOLINT
+        EXPECT_STRNE(static_cast<const wchar_t*>(nullptr), nullptr);
+      },
+      "");
+
+  // Empty strings.
+  EXPECT_NONFATAL_FAILURE(EXPECT_STRNE(L"", L""),
+                          "L\"\"");
+
+  // Non-null vs NULL.
+  ASSERT_STRNE(L"non-null", nullptr);
+
+  // Equal strings.
+  EXPECT_NONFATAL_FAILURE(EXPECT_STRNE(L"Hi", L"Hi"),
+                          "L\"Hi\"");
+
+  // Unequal strings.
+  EXPECT_STRNE(L"abc", L"Abc");
+
+  // Strings containing wide characters.
+  EXPECT_NONFATAL_FAILURE(EXPECT_STRNE(L"abc\x8119", L"abc\x8119"),
+                          "abc");
+
+  // The streaming variation.
+  ASSERT_STRNE(L"abc\x8119", L"abc\x8120") << "This shouldn't happen";
+}
+
+// Tests for ::testing::IsSubstring().
+
+// Tests that IsSubstring() returns the correct result when the input
+// argument type is const char*.
+TEST(IsSubstringTest, ReturnsCorrectResultForCString) {
+  EXPECT_FALSE(IsSubstring("", "", nullptr, "a"));
+  EXPECT_FALSE(IsSubstring("", "", "b", nullptr));
+  EXPECT_FALSE(IsSubstring("", "", "needle", "haystack"));
+
+  EXPECT_TRUE(IsSubstring("", "", static_cast<const char*>(nullptr), nullptr));
+  EXPECT_TRUE(IsSubstring("", "", "needle", "two needles"));
+}
+
+// Tests that IsSubstring() returns the correct result when the input
+// argument type is const wchar_t*.
+TEST(IsSubstringTest, ReturnsCorrectResultForWideCString) {
+  EXPECT_FALSE(IsSubstring("", "", kNull, L"a"));
+  EXPECT_FALSE(IsSubstring("", "", L"b", kNull));
+  EXPECT_FALSE(IsSubstring("", "", L"needle", L"haystack"));
+
+  EXPECT_TRUE(
+      IsSubstring("", "", static_cast<const wchar_t*>(nullptr), nullptr));
+  EXPECT_TRUE(IsSubstring("", "", L"needle", L"two needles"));
+}
+
+// Tests that IsSubstring() generates the correct message when the input
+// argument type is const char*.
+TEST(IsSubstringTest, GeneratesCorrectMessageForCString) {
+  EXPECT_STREQ("Value of: needle_expr\n"
+               "  Actual: \"needle\"\n"
+               "Expected: a substring of haystack_expr\n"
+               "Which is: \"haystack\"",
+               IsSubstring("needle_expr", "haystack_expr",
+                           "needle", "haystack").failure_message());
+}
+
+// Tests that IsSubstring returns the correct result when the input
+// argument type is ::std::string.
+TEST(IsSubstringTest, ReturnsCorrectResultsForStdString) {
+  EXPECT_TRUE(IsSubstring("", "", std::string("hello"), "ahellob"));
+  EXPECT_FALSE(IsSubstring("", "", "hello", std::string("world")));
+}
+
+#if GTEST_HAS_STD_WSTRING
+// Tests that IsSubstring returns the correct result when the input
+// argument type is ::std::wstring.
+TEST(IsSubstringTest, ReturnsCorrectResultForStdWstring) {
+  EXPECT_TRUE(IsSubstring("", "", ::std::wstring(L"needle"), L"two needles"));
+  EXPECT_FALSE(IsSubstring("", "", L"needle", ::std::wstring(L"haystack")));
+}
+
+// Tests that IsSubstring() generates the correct message when the input
+// argument type is ::std::wstring.
+TEST(IsSubstringTest, GeneratesCorrectMessageForWstring) {
+  EXPECT_STREQ("Value of: needle_expr\n"
+               "  Actual: L\"needle\"\n"
+               "Expected: a substring of haystack_expr\n"
+               "Which is: L\"haystack\"",
+               IsSubstring(
+                   "needle_expr", "haystack_expr",
+                   ::std::wstring(L"needle"), L"haystack").failure_message());
+}
+
+#endif  // GTEST_HAS_STD_WSTRING
+
+// Tests for ::testing::IsNotSubstring().
+
+// Tests that IsNotSubstring() returns the correct result when the input
+// argument type is const char*.
+TEST(IsNotSubstringTest, ReturnsCorrectResultForCString) {
+  EXPECT_TRUE(IsNotSubstring("", "", "needle", "haystack"));
+  EXPECT_FALSE(IsNotSubstring("", "", "needle", "two needles"));
+}
+
+// Tests that IsNotSubstring() returns the correct result when the input
+// argument type is const wchar_t*.
+TEST(IsNotSubstringTest, ReturnsCorrectResultForWideCString) {
+  EXPECT_TRUE(IsNotSubstring("", "", L"needle", L"haystack"));
+  EXPECT_FALSE(IsNotSubstring("", "", L"needle", L"two needles"));
+}
+
+// Tests that IsNotSubstring() generates the correct message when the input
+// argument type is const wchar_t*.
+TEST(IsNotSubstringTest, GeneratesCorrectMessageForWideCString) {
+  EXPECT_STREQ("Value of: needle_expr\n"
+               "  Actual: L\"needle\"\n"
+               "Expected: not a substring of haystack_expr\n"
+               "Which is: L\"two needles\"",
+               IsNotSubstring(
+                   "needle_expr", "haystack_expr",
+                   L"needle", L"two needles").failure_message());
+}
+
+// Tests that IsNotSubstring returns the correct result when the input
+// argument type is ::std::string.
+TEST(IsNotSubstringTest, ReturnsCorrectResultsForStdString) {
+  EXPECT_FALSE(IsNotSubstring("", "", std::string("hello"), "ahellob"));
+  EXPECT_TRUE(IsNotSubstring("", "", "hello", std::string("world")));
+}
+
+// Tests that IsNotSubstring() generates the correct message when the input
+// argument type is ::std::string.
+TEST(IsNotSubstringTest, GeneratesCorrectMessageForStdString) {
+  EXPECT_STREQ("Value of: needle_expr\n"
+               "  Actual: \"needle\"\n"
+               "Expected: not a substring of haystack_expr\n"
+               "Which is: \"two needles\"",
+               IsNotSubstring(
+                   "needle_expr", "haystack_expr",
+                   ::std::string("needle"), "two needles").failure_message());
+}
+
+#if GTEST_HAS_STD_WSTRING
+
+// Tests that IsNotSubstring returns the correct result when the input
+// argument type is ::std::wstring.
+TEST(IsNotSubstringTest, ReturnsCorrectResultForStdWstring) {
+  EXPECT_FALSE(
+      IsNotSubstring("", "", ::std::wstring(L"needle"), L"two needles"));
+  EXPECT_TRUE(IsNotSubstring("", "", L"needle", ::std::wstring(L"haystack")));
+}
+
+#endif  // GTEST_HAS_STD_WSTRING
+
+// Tests floating-point assertions.
+
+template <typename RawType>
+class FloatingPointTest : public Test {
+ protected:
+  // Pre-calculated numbers to be used by the tests.
+  struct TestValues {
+    RawType close_to_positive_zero;
+    RawType close_to_negative_zero;
+    RawType further_from_negative_zero;
+
+    RawType close_to_one;
+    RawType further_from_one;
+
+    RawType infinity;
+    RawType close_to_infinity;
+    RawType further_from_infinity;
+
+    RawType nan1;
+    RawType nan2;
+  };
+
+  typedef typename testing::internal::FloatingPoint<RawType> Floating;
+  typedef typename Floating::Bits Bits;
+
+  void SetUp() override {
+    const size_t max_ulps = Floating::kMaxUlps;
+
+    // The bits that represent 0.0.
+    const Bits zero_bits = Floating(0).bits();
+
+    // Makes some numbers close to 0.0.
+    values_.close_to_positive_zero = Floating::ReinterpretBits(
+        zero_bits + max_ulps/2);
+    values_.close_to_negative_zero = -Floating::ReinterpretBits(
+        zero_bits + max_ulps - max_ulps/2);
+    values_.further_from_negative_zero = -Floating::ReinterpretBits(
+        zero_bits + max_ulps + 1 - max_ulps/2);
+
+    // The bits that represent 1.0.
+    const Bits one_bits = Floating(1).bits();
+
+    // Makes some numbers close to 1.0.
+    values_.close_to_one = Floating::ReinterpretBits(one_bits + max_ulps);
+    values_.further_from_one = Floating::ReinterpretBits(
+        one_bits + max_ulps + 1);
+
+    // +infinity.
+    values_.infinity = Floating::Infinity();
+
+    // The bits that represent +infinity.
+    const Bits infinity_bits = Floating(values_.infinity).bits();
+
+    // Makes some numbers close to infinity.
+    values_.close_to_infinity = Floating::ReinterpretBits(
+        infinity_bits - max_ulps);
+    values_.further_from_infinity = Floating::ReinterpretBits(
+        infinity_bits - max_ulps - 1);
+
+    // Makes some NAN's.  Sets the most significant bit of the fraction so that
+    // our NaN's are quiet; trying to process a signaling NaN would raise an
+    // exception if our environment enables floating point exceptions.
+    values_.nan1 = Floating::ReinterpretBits(Floating::kExponentBitMask
+        | (static_cast<Bits>(1) << (Floating::kFractionBitCount - 1)) | 1);
+    values_.nan2 = Floating::ReinterpretBits(Floating::kExponentBitMask
+        | (static_cast<Bits>(1) << (Floating::kFractionBitCount - 1)) | 200);
+  }
+
+  void TestSize() {
+    EXPECT_EQ(sizeof(RawType), sizeof(Bits));
+  }
+
+  static TestValues values_;
+};
+
+template <typename RawType>
+typename FloatingPointTest<RawType>::TestValues
+    FloatingPointTest<RawType>::values_;
+
+// Instantiates FloatingPointTest for testing *_FLOAT_EQ.
+typedef FloatingPointTest<float> FloatTest;
+
+// Tests that the size of Float::Bits matches the size of float.
+TEST_F(FloatTest, Size) {
+  TestSize();
+}
+
+// Tests comparing with +0 and -0.
+TEST_F(FloatTest, Zeros) {
+  EXPECT_FLOAT_EQ(0.0, -0.0);
+  EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(-0.0, 1.0),
+                          "1.0");
+  EXPECT_FATAL_FAILURE(ASSERT_FLOAT_EQ(0.0, 1.5),
+                       "1.5");
+}
+
+// Tests comparing numbers close to 0.
+//
+// This ensures that *_FLOAT_EQ handles the sign correctly and no
+// overflow occurs when comparing numbers whose absolute value is very
+// small.
+TEST_F(FloatTest, AlmostZeros) {
+  // In C++Builder, names within local classes (such as used by
+  // EXPECT_FATAL_FAILURE) cannot be resolved against static members of the
+  // scoping class.  Use a static local alias as a workaround.
+  // We use the assignment syntax since some compilers, like Sun Studio,
+  // don't allow initializing references using construction syntax
+  // (parentheses).
+  static const FloatTest::TestValues& v = this->values_;
+
+  EXPECT_FLOAT_EQ(0.0, v.close_to_positive_zero);
+  EXPECT_FLOAT_EQ(-0.0, v.close_to_negative_zero);
+  EXPECT_FLOAT_EQ(v.close_to_positive_zero, v.close_to_negative_zero);
+
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_FLOAT_EQ(v.close_to_positive_zero,
+                    v.further_from_negative_zero);
+  }, "v.further_from_negative_zero");
+}
+
+// Tests comparing numbers close to each other.
+TEST_F(FloatTest, SmallDiff) {
+  EXPECT_FLOAT_EQ(1.0, values_.close_to_one);
+  EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(1.0, values_.further_from_one),
+                          "values_.further_from_one");
+}
+
+// Tests comparing numbers far apart.
+TEST_F(FloatTest, LargeDiff) {
+  EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(2.5, 3.0),
+                          "3.0");
+}
+
+// Tests comparing with infinity.
+//
+// This ensures that no overflow occurs when comparing numbers whose
+// absolute value is very large.
+TEST_F(FloatTest, Infinity) {
+  EXPECT_FLOAT_EQ(values_.infinity, values_.close_to_infinity);
+  EXPECT_FLOAT_EQ(-values_.infinity, -values_.close_to_infinity);
+  EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(values_.infinity, -values_.infinity),
+                          "-values_.infinity");
+
+  // This is interesting as the representations of infinity and nan1
+  // are only 1 DLP apart.
+  EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(values_.infinity, values_.nan1),
+                          "values_.nan1");
+}
+
+// Tests that comparing with NAN always returns false.
+TEST_F(FloatTest, NaN) {
+  // In C++Builder, names within local classes (such as used by
+  // EXPECT_FATAL_FAILURE) cannot be resolved against static members of the
+  // scoping class.  Use a static local alias as a workaround.
+  // We use the assignment syntax since some compilers, like Sun Studio,
+  // don't allow initializing references using construction syntax
+  // (parentheses).
+  static const FloatTest::TestValues& v = this->values_;
+
+  EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(v.nan1, v.nan1),
+                          "v.nan1");
+  EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(v.nan1, v.nan2),
+                          "v.nan2");
+  EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(1.0, v.nan1),
+                          "v.nan1");
+
+  EXPECT_FATAL_FAILURE(ASSERT_FLOAT_EQ(v.nan1, v.infinity),
+                       "v.infinity");
+}
+
+// Tests that *_FLOAT_EQ are reflexive.
+TEST_F(FloatTest, Reflexive) {
+  EXPECT_FLOAT_EQ(0.0, 0.0);
+  EXPECT_FLOAT_EQ(1.0, 1.0);
+  ASSERT_FLOAT_EQ(values_.infinity, values_.infinity);
+}
+
+// Tests that *_FLOAT_EQ are commutative.
+TEST_F(FloatTest, Commutative) {
+  // We already tested EXPECT_FLOAT_EQ(1.0, values_.close_to_one).
+  EXPECT_FLOAT_EQ(values_.close_to_one, 1.0);
+
+  // We already tested EXPECT_FLOAT_EQ(1.0, values_.further_from_one).
+  EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(values_.further_from_one, 1.0),
+                          "1.0");
+}
+
+// Tests EXPECT_NEAR.
+TEST_F(FloatTest, EXPECT_NEAR) {
+  EXPECT_NEAR(-1.0f, -1.1f, 0.2f);
+  EXPECT_NEAR(2.0f, 3.0f, 1.0f);
+  EXPECT_NONFATAL_FAILURE(EXPECT_NEAR(1.0f,1.5f, 0.25f),  // NOLINT
+                          "The difference between 1.0f and 1.5f is 0.5, "
+                          "which exceeds 0.25f");
+  // To work around a bug in gcc 2.95.0, there is intentionally no
+  // space after the first comma in the previous line.
+}
+
+// Tests ASSERT_NEAR.
+TEST_F(FloatTest, ASSERT_NEAR) {
+  ASSERT_NEAR(-1.0f, -1.1f, 0.2f);
+  ASSERT_NEAR(2.0f, 3.0f, 1.0f);
+  EXPECT_FATAL_FAILURE(ASSERT_NEAR(1.0f,1.5f, 0.25f),  // NOLINT
+                       "The difference between 1.0f and 1.5f is 0.5, "
+                       "which exceeds 0.25f");
+  // To work around a bug in gcc 2.95.0, there is intentionally no
+  // space after the first comma in the previous line.
+}
+
+// Tests the cases where FloatLE() should succeed.
+TEST_F(FloatTest, FloatLESucceeds) {
+  EXPECT_PRED_FORMAT2(FloatLE, 1.0f, 2.0f);  // When val1 < val2,
+  ASSERT_PRED_FORMAT2(FloatLE, 1.0f, 1.0f);  // val1 == val2,
+
+  // or when val1 is greater than, but almost equals to, val2.
+  EXPECT_PRED_FORMAT2(FloatLE, values_.close_to_positive_zero, 0.0f);
+}
+
+// Tests the cases where FloatLE() should fail.
+TEST_F(FloatTest, FloatLEFails) {
+  // When val1 is greater than val2 by a large margin,
+  EXPECT_NONFATAL_FAILURE(EXPECT_PRED_FORMAT2(FloatLE, 2.0f, 1.0f),
+                          "(2.0f) <= (1.0f)");
+
+  // or by a small yet non-negligible margin,
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT2(FloatLE, values_.further_from_one, 1.0f);
+  }, "(values_.further_from_one) <= (1.0f)");
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT2(FloatLE, values_.nan1, values_.infinity);
+  }, "(values_.nan1) <= (values_.infinity)");
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT2(FloatLE, -values_.infinity, values_.nan1);
+  }, "(-values_.infinity) <= (values_.nan1)");
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT2(FloatLE, values_.nan1, values_.nan1);
+  }, "(values_.nan1) <= (values_.nan1)");
+}
+
+// Instantiates FloatingPointTest for testing *_DOUBLE_EQ.
+typedef FloatingPointTest<double> DoubleTest;
+
+// Tests that the size of Double::Bits matches the size of double.
+TEST_F(DoubleTest, Size) {
+  TestSize();
+}
+
+// Tests comparing with +0 and -0.
+TEST_F(DoubleTest, Zeros) {
+  EXPECT_DOUBLE_EQ(0.0, -0.0);
+  EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(-0.0, 1.0),
+                          "1.0");
+  EXPECT_FATAL_FAILURE(ASSERT_DOUBLE_EQ(0.0, 1.0),
+                       "1.0");
+}
+
+// Tests comparing numbers close to 0.
+//
+// This ensures that *_DOUBLE_EQ handles the sign correctly and no
+// overflow occurs when comparing numbers whose absolute value is very
+// small.
+TEST_F(DoubleTest, AlmostZeros) {
+  // In C++Builder, names within local classes (such as used by
+  // EXPECT_FATAL_FAILURE) cannot be resolved against static members of the
+  // scoping class.  Use a static local alias as a workaround.
+  // We use the assignment syntax since some compilers, like Sun Studio,
+  // don't allow initializing references using construction syntax
+  // (parentheses).
+  static const DoubleTest::TestValues& v = this->values_;
+
+  EXPECT_DOUBLE_EQ(0.0, v.close_to_positive_zero);
+  EXPECT_DOUBLE_EQ(-0.0, v.close_to_negative_zero);
+  EXPECT_DOUBLE_EQ(v.close_to_positive_zero, v.close_to_negative_zero);
+
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_DOUBLE_EQ(v.close_to_positive_zero,
+                     v.further_from_negative_zero);
+  }, "v.further_from_negative_zero");
+}
+
+// Tests comparing numbers close to each other.
+TEST_F(DoubleTest, SmallDiff) {
+  EXPECT_DOUBLE_EQ(1.0, values_.close_to_one);
+  EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(1.0, values_.further_from_one),
+                          "values_.further_from_one");
+}
+
+// Tests comparing numbers far apart.
+TEST_F(DoubleTest, LargeDiff) {
+  EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(2.0, 3.0),
+                          "3.0");
+}
+
+// Tests comparing with infinity.
+//
+// This ensures that no overflow occurs when comparing numbers whose
+// absolute value is very large.
+TEST_F(DoubleTest, Infinity) {
+  EXPECT_DOUBLE_EQ(values_.infinity, values_.close_to_infinity);
+  EXPECT_DOUBLE_EQ(-values_.infinity, -values_.close_to_infinity);
+  EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(values_.infinity, -values_.infinity),
+                          "-values_.infinity");
+
+  // This is interesting as the representations of infinity_ and nan1_
+  // are only 1 DLP apart.
+  EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(values_.infinity, values_.nan1),
+                          "values_.nan1");
+}
+
+// Tests that comparing with NAN always returns false.
+TEST_F(DoubleTest, NaN) {
+  static const DoubleTest::TestValues& v = this->values_;
+
+  // Nokia's STLport crashes if we try to output infinity or NaN.
+  EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(v.nan1, v.nan1),
+                          "v.nan1");
+  EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(v.nan1, v.nan2), "v.nan2");
+  EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(1.0, v.nan1), "v.nan1");
+  EXPECT_FATAL_FAILURE(ASSERT_DOUBLE_EQ(v.nan1, v.infinity),
+                       "v.infinity");
+}
+
+// Tests that *_DOUBLE_EQ are reflexive.
+TEST_F(DoubleTest, Reflexive) {
+  EXPECT_DOUBLE_EQ(0.0, 0.0);
+  EXPECT_DOUBLE_EQ(1.0, 1.0);
+  ASSERT_DOUBLE_EQ(values_.infinity, values_.infinity);
+}
+
+// Tests that *_DOUBLE_EQ are commutative.
+TEST_F(DoubleTest, Commutative) {
+  // We already tested EXPECT_DOUBLE_EQ(1.0, values_.close_to_one).
+  EXPECT_DOUBLE_EQ(values_.close_to_one, 1.0);
+
+  // We already tested EXPECT_DOUBLE_EQ(1.0, values_.further_from_one).
+  EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(values_.further_from_one, 1.0),
+                          "1.0");
+}
+
+// Tests EXPECT_NEAR.
+TEST_F(DoubleTest, EXPECT_NEAR) {
+  EXPECT_NEAR(-1.0, -1.1, 0.2);
+  EXPECT_NEAR(2.0, 3.0, 1.0);
+  EXPECT_NONFATAL_FAILURE(EXPECT_NEAR(1.0, 1.5, 0.25),  // NOLINT
+                          "The difference between 1.0 and 1.5 is 0.5, "
+                          "which exceeds 0.25");
+  // To work around a bug in gcc 2.95.0, there is intentionally no
+  // space after the first comma in the previous statement.
+}
+
+// Tests ASSERT_NEAR.
+TEST_F(DoubleTest, ASSERT_NEAR) {
+  ASSERT_NEAR(-1.0, -1.1, 0.2);
+  ASSERT_NEAR(2.0, 3.0, 1.0);
+  EXPECT_FATAL_FAILURE(ASSERT_NEAR(1.0, 1.5, 0.25),  // NOLINT
+                       "The difference between 1.0 and 1.5 is 0.5, "
+                       "which exceeds 0.25");
+  // To work around a bug in gcc 2.95.0, there is intentionally no
+  // space after the first comma in the previous statement.
+}
+
+// Tests the cases where DoubleLE() should succeed.
+TEST_F(DoubleTest, DoubleLESucceeds) {
+  EXPECT_PRED_FORMAT2(DoubleLE, 1.0, 2.0);  // When val1 < val2,
+  ASSERT_PRED_FORMAT2(DoubleLE, 1.0, 1.0);  // val1 == val2,
+
+  // or when val1 is greater than, but almost equals to, val2.
+  EXPECT_PRED_FORMAT2(DoubleLE, values_.close_to_positive_zero, 0.0);
+}
+
+// Tests the cases where DoubleLE() should fail.
+TEST_F(DoubleTest, DoubleLEFails) {
+  // When val1 is greater than val2 by a large margin,
+  EXPECT_NONFATAL_FAILURE(EXPECT_PRED_FORMAT2(DoubleLE, 2.0, 1.0),
+                          "(2.0) <= (1.0)");
+
+  // or by a small yet non-negligible margin,
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT2(DoubleLE, values_.further_from_one, 1.0);
+  }, "(values_.further_from_one) <= (1.0)");
+
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT2(DoubleLE, values_.nan1, values_.infinity);
+  }, "(values_.nan1) <= (values_.infinity)");
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_PRED_FORMAT2(DoubleLE, -values_.infinity, values_.nan1);
+  }, " (-values_.infinity) <= (values_.nan1)");
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_PRED_FORMAT2(DoubleLE, values_.nan1, values_.nan1);
+  }, "(values_.nan1) <= (values_.nan1)");
+}
+
+
+// Verifies that a test or test case whose name starts with DISABLED_ is
+// not run.
+
+// A test whose name starts with DISABLED_.
+// Should not run.
+TEST(DisabledTest, DISABLED_TestShouldNotRun) {
+  FAIL() << "Unexpected failure: Disabled test should not be run.";
+}
+
+// A test whose name does not start with DISABLED_.
+// Should run.
+TEST(DisabledTest, NotDISABLED_TestShouldRun) {
+  EXPECT_EQ(1, 1);
+}
+
+// A test case whose name starts with DISABLED_.
+// Should not run.
+TEST(DISABLED_TestSuite, TestShouldNotRun) {
+  FAIL() << "Unexpected failure: Test in disabled test case should not be run.";
+}
+
+// A test case and test whose names start with DISABLED_.
+// Should not run.
+TEST(DISABLED_TestSuite, DISABLED_TestShouldNotRun) {
+  FAIL() << "Unexpected failure: Test in disabled test case should not be run.";
+}
+
+// Check that when all tests in a test case are disabled, SetUpTestSuite() and
+// TearDownTestSuite() are not called.
+class DisabledTestsTest : public Test {
+ protected:
+  static void SetUpTestSuite() {
+    FAIL() << "Unexpected failure: All tests disabled in test case. "
+              "SetUpTestSuite() should not be called.";
+  }
+
+  static void TearDownTestSuite() {
+    FAIL() << "Unexpected failure: All tests disabled in test case. "
+              "TearDownTestSuite() should not be called.";
+  }
+};
+
+TEST_F(DisabledTestsTest, DISABLED_TestShouldNotRun_1) {
+  FAIL() << "Unexpected failure: Disabled test should not be run.";
+}
+
+TEST_F(DisabledTestsTest, DISABLED_TestShouldNotRun_2) {
+  FAIL() << "Unexpected failure: Disabled test should not be run.";
+}
+
+// Tests that disabled typed tests aren't run.
+
+#if GTEST_HAS_TYPED_TEST
+
+template <typename T>
+class TypedTest : public Test {
+};
+
+typedef testing::Types<int, double> NumericTypes;
+TYPED_TEST_SUITE(TypedTest, NumericTypes);
+
+TYPED_TEST(TypedTest, DISABLED_ShouldNotRun) {
+  FAIL() << "Unexpected failure: Disabled typed test should not run.";
+}
+
+template <typename T>
+class DISABLED_TypedTest : public Test {
+};
+
+TYPED_TEST_SUITE(DISABLED_TypedTest, NumericTypes);
+
+TYPED_TEST(DISABLED_TypedTest, ShouldNotRun) {
+  FAIL() << "Unexpected failure: Disabled typed test should not run.";
+}
+
+#endif  // GTEST_HAS_TYPED_TEST
+
+// Tests that disabled type-parameterized tests aren't run.
+
+#if GTEST_HAS_TYPED_TEST_P
+
+template <typename T>
+class TypedTestP : public Test {
+};
+
+TYPED_TEST_SUITE_P(TypedTestP);
+
+TYPED_TEST_P(TypedTestP, DISABLED_ShouldNotRun) {
+  FAIL() << "Unexpected failure: "
+         << "Disabled type-parameterized test should not run.";
+}
+
+REGISTER_TYPED_TEST_SUITE_P(TypedTestP, DISABLED_ShouldNotRun);
+
+INSTANTIATE_TYPED_TEST_SUITE_P(My, TypedTestP, NumericTypes);
+
+template <typename T>
+class DISABLED_TypedTestP : public Test {
+};
+
+TYPED_TEST_SUITE_P(DISABLED_TypedTestP);
+
+TYPED_TEST_P(DISABLED_TypedTestP, ShouldNotRun) {
+  FAIL() << "Unexpected failure: "
+         << "Disabled type-parameterized test should not run.";
+}
+
+REGISTER_TYPED_TEST_SUITE_P(DISABLED_TypedTestP, ShouldNotRun);
+
+INSTANTIATE_TYPED_TEST_SUITE_P(My, DISABLED_TypedTestP, NumericTypes);
+
+#endif  // GTEST_HAS_TYPED_TEST_P
+
+// Tests that assertion macros evaluate their arguments exactly once.
+
+class SingleEvaluationTest : public Test {
+ public:  // Must be public and not protected due to a bug in g++ 3.4.2.
+  // This helper function is needed by the FailedASSERT_STREQ test
+  // below.  It's public to work around C++Builder's bug with scoping local
+  // classes.
+  static void CompareAndIncrementCharPtrs() {
+    ASSERT_STREQ(p1_++, p2_++);
+  }
+
+  // This helper function is needed by the FailedASSERT_NE test below.  It's
+  // public to work around C++Builder's bug with scoping local classes.
+  static void CompareAndIncrementInts() {
+    ASSERT_NE(a_++, b_++);
+  }
+
+ protected:
+  SingleEvaluationTest() {
+    p1_ = s1_;
+    p2_ = s2_;
+    a_ = 0;
+    b_ = 0;
+  }
+
+  static const char* const s1_;
+  static const char* const s2_;
+  static const char* p1_;
+  static const char* p2_;
+
+  static int a_;
+  static int b_;
+};
+
+const char* const SingleEvaluationTest::s1_ = "01234";
+const char* const SingleEvaluationTest::s2_ = "abcde";
+const char* SingleEvaluationTest::p1_;
+const char* SingleEvaluationTest::p2_;
+int SingleEvaluationTest::a_;
+int SingleEvaluationTest::b_;
+
+// Tests that when ASSERT_STREQ fails, it evaluates its arguments
+// exactly once.
+TEST_F(SingleEvaluationTest, FailedASSERT_STREQ) {
+  EXPECT_FATAL_FAILURE(SingleEvaluationTest::CompareAndIncrementCharPtrs(),
+                       "p2_++");
+  EXPECT_EQ(s1_ + 1, p1_);
+  EXPECT_EQ(s2_ + 1, p2_);
+}
+
+// Tests that string assertion arguments are evaluated exactly once.
+TEST_F(SingleEvaluationTest, ASSERT_STR) {
+  // successful EXPECT_STRNE
+  EXPECT_STRNE(p1_++, p2_++);
+  EXPECT_EQ(s1_ + 1, p1_);
+  EXPECT_EQ(s2_ + 1, p2_);
+
+  // failed EXPECT_STRCASEEQ
+  EXPECT_NONFATAL_FAILURE(EXPECT_STRCASEEQ(p1_++, p2_++),
+                          "Ignoring case");
+  EXPECT_EQ(s1_ + 2, p1_);
+  EXPECT_EQ(s2_ + 2, p2_);
+}
+
+// Tests that when ASSERT_NE fails, it evaluates its arguments exactly
+// once.
+TEST_F(SingleEvaluationTest, FailedASSERT_NE) {
+  EXPECT_FATAL_FAILURE(SingleEvaluationTest::CompareAndIncrementInts(),
+                       "(a_++) != (b_++)");
+  EXPECT_EQ(1, a_);
+  EXPECT_EQ(1, b_);
+}
+
+// Tests that assertion arguments are evaluated exactly once.
+TEST_F(SingleEvaluationTest, OtherCases) {
+  // successful EXPECT_TRUE
+  EXPECT_TRUE(0 == a_++);  // NOLINT
+  EXPECT_EQ(1, a_);
+
+  // failed EXPECT_TRUE
+  EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(-1 == a_++), "-1 == a_++");
+  EXPECT_EQ(2, a_);
+
+  // successful EXPECT_GT
+  EXPECT_GT(a_++, b_++);
+  EXPECT_EQ(3, a_);
+  EXPECT_EQ(1, b_);
+
+  // failed EXPECT_LT
+  EXPECT_NONFATAL_FAILURE(EXPECT_LT(a_++, b_++), "(a_++) < (b_++)");
+  EXPECT_EQ(4, a_);
+  EXPECT_EQ(2, b_);
+
+  // successful ASSERT_TRUE
+  ASSERT_TRUE(0 < a_++);  // NOLINT
+  EXPECT_EQ(5, a_);
+
+  // successful ASSERT_GT
+  ASSERT_GT(a_++, b_++);
+  EXPECT_EQ(6, a_);
+  EXPECT_EQ(3, b_);
+}
+
+#if GTEST_HAS_EXCEPTIONS
+
+void ThrowAnInteger() {
+  throw 1;
+}
+
+// Tests that assertion arguments are evaluated exactly once.
+TEST_F(SingleEvaluationTest, ExceptionTests) {
+  // successful EXPECT_THROW
+  EXPECT_THROW({  // NOLINT
+    a_++;
+    ThrowAnInteger();
+  }, int);
+  EXPECT_EQ(1, a_);
+
+  // failed EXPECT_THROW, throws different
+  EXPECT_NONFATAL_FAILURE(EXPECT_THROW({  // NOLINT
+    a_++;
+    ThrowAnInteger();
+  }, bool), "throws a different type");
+  EXPECT_EQ(2, a_);
+
+  // failed EXPECT_THROW, throws nothing
+  EXPECT_NONFATAL_FAILURE(EXPECT_THROW(a_++, bool), "throws nothing");
+  EXPECT_EQ(3, a_);
+
+  // successful EXPECT_NO_THROW
+  EXPECT_NO_THROW(a_++);
+  EXPECT_EQ(4, a_);
+
+  // failed EXPECT_NO_THROW
+  EXPECT_NONFATAL_FAILURE(EXPECT_NO_THROW({  // NOLINT
+    a_++;
+    ThrowAnInteger();
+  }), "it throws");
+  EXPECT_EQ(5, a_);
+
+  // successful EXPECT_ANY_THROW
+  EXPECT_ANY_THROW({  // NOLINT
+    a_++;
+    ThrowAnInteger();
+  });
+  EXPECT_EQ(6, a_);
+
+  // failed EXPECT_ANY_THROW
+  EXPECT_NONFATAL_FAILURE(EXPECT_ANY_THROW(a_++), "it doesn't");
+  EXPECT_EQ(7, a_);
+}
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
+// Tests {ASSERT|EXPECT}_NO_FATAL_FAILURE.
+class NoFatalFailureTest : public Test {
+ protected:
+  void Succeeds() {}
+  void FailsNonFatal() {
+    ADD_FAILURE() << "some non-fatal failure";
+  }
+  void Fails() {
+    FAIL() << "some fatal failure";
+  }
+
+  void DoAssertNoFatalFailureOnFails() {
+    ASSERT_NO_FATAL_FAILURE(Fails());
+    ADD_FAILURE() << "should not reach here.";
+  }
+
+  void DoExpectNoFatalFailureOnFails() {
+    EXPECT_NO_FATAL_FAILURE(Fails());
+    ADD_FAILURE() << "other failure";
+  }
+};
+
+TEST_F(NoFatalFailureTest, NoFailure) {
+  EXPECT_NO_FATAL_FAILURE(Succeeds());
+  ASSERT_NO_FATAL_FAILURE(Succeeds());
+}
+
+TEST_F(NoFatalFailureTest, NonFatalIsNoFailure) {
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_NO_FATAL_FAILURE(FailsNonFatal()),
+      "some non-fatal failure");
+  EXPECT_NONFATAL_FAILURE(
+      ASSERT_NO_FATAL_FAILURE(FailsNonFatal()),
+      "some non-fatal failure");
+}
+
+TEST_F(NoFatalFailureTest, AssertNoFatalFailureOnFatalFailure) {
+  TestPartResultArray gtest_failures;
+  {
+    ScopedFakeTestPartResultReporter gtest_reporter(&gtest_failures);
+    DoAssertNoFatalFailureOnFails();
+  }
+  ASSERT_EQ(2, gtest_failures.size());
+  EXPECT_EQ(TestPartResult::kFatalFailure,
+            gtest_failures.GetTestPartResult(0).type());
+  EXPECT_EQ(TestPartResult::kFatalFailure,
+            gtest_failures.GetTestPartResult(1).type());
+  EXPECT_PRED_FORMAT2(testing::IsSubstring, "some fatal failure",
+                      gtest_failures.GetTestPartResult(0).message());
+  EXPECT_PRED_FORMAT2(testing::IsSubstring, "it does",
+                      gtest_failures.GetTestPartResult(1).message());
+}
+
+TEST_F(NoFatalFailureTest, ExpectNoFatalFailureOnFatalFailure) {
+  TestPartResultArray gtest_failures;
+  {
+    ScopedFakeTestPartResultReporter gtest_reporter(&gtest_failures);
+    DoExpectNoFatalFailureOnFails();
+  }
+  ASSERT_EQ(3, gtest_failures.size());
+  EXPECT_EQ(TestPartResult::kFatalFailure,
+            gtest_failures.GetTestPartResult(0).type());
+  EXPECT_EQ(TestPartResult::kNonFatalFailure,
+            gtest_failures.GetTestPartResult(1).type());
+  EXPECT_EQ(TestPartResult::kNonFatalFailure,
+            gtest_failures.GetTestPartResult(2).type());
+  EXPECT_PRED_FORMAT2(testing::IsSubstring, "some fatal failure",
+                      gtest_failures.GetTestPartResult(0).message());
+  EXPECT_PRED_FORMAT2(testing::IsSubstring, "it does",
+                      gtest_failures.GetTestPartResult(1).message());
+  EXPECT_PRED_FORMAT2(testing::IsSubstring, "other failure",
+                      gtest_failures.GetTestPartResult(2).message());
+}
+
+TEST_F(NoFatalFailureTest, MessageIsStreamable) {
+  TestPartResultArray gtest_failures;
+  {
+    ScopedFakeTestPartResultReporter gtest_reporter(&gtest_failures);
+    EXPECT_NO_FATAL_FAILURE(FAIL() << "foo") << "my message";
+  }
+  ASSERT_EQ(2, gtest_failures.size());
+  EXPECT_EQ(TestPartResult::kNonFatalFailure,
+            gtest_failures.GetTestPartResult(0).type());
+  EXPECT_EQ(TestPartResult::kNonFatalFailure,
+            gtest_failures.GetTestPartResult(1).type());
+  EXPECT_PRED_FORMAT2(testing::IsSubstring, "foo",
+                      gtest_failures.GetTestPartResult(0).message());
+  EXPECT_PRED_FORMAT2(testing::IsSubstring, "my message",
+                      gtest_failures.GetTestPartResult(1).message());
+}
+
+// Tests non-string assertions.
+
+std::string EditsToString(const std::vector<EditType>& edits) {
+  std::string out;
+  for (size_t i = 0; i < edits.size(); ++i) {
+    static const char kEdits[] = " +-/";
+    out.append(1, kEdits[edits[i]]);
+  }
+  return out;
+}
+
+std::vector<size_t> CharsToIndices(const std::string& str) {
+  std::vector<size_t> out;
+  for (size_t i = 0; i < str.size(); ++i) {
+    out.push_back(static_cast<size_t>(str[i]));
+  }
+  return out;
+}
+
+std::vector<std::string> CharsToLines(const std::string& str) {
+  std::vector<std::string> out;
+  for (size_t i = 0; i < str.size(); ++i) {
+    out.push_back(str.substr(i, 1));
+  }
+  return out;
+}
+
+TEST(EditDistance, TestSuites) {
+  struct Case {
+    int line;
+    const char* left;
+    const char* right;
+    const char* expected_edits;
+    const char* expected_diff;
+  };
+  static const Case kCases[] = {
+      // No change.
+      {__LINE__, "A", "A", " ", ""},
+      {__LINE__, "ABCDE", "ABCDE", "     ", ""},
+      // Simple adds.
+      {__LINE__, "X", "XA", " +", "@@ +1,2 @@\n X\n+A\n"},
+      {__LINE__, "X", "XABCD", " ++++", "@@ +1,5 @@\n X\n+A\n+B\n+C\n+D\n"},
+      // Simple removes.
+      {__LINE__, "XA", "X", " -", "@@ -1,2 @@\n X\n-A\n"},
+      {__LINE__, "XABCD", "X", " ----", "@@ -1,5 @@\n X\n-A\n-B\n-C\n-D\n"},
+      // Simple replaces.
+      {__LINE__, "A", "a", "/", "@@ -1,1 +1,1 @@\n-A\n+a\n"},
+      {__LINE__, "ABCD", "abcd", "////",
+       "@@ -1,4 +1,4 @@\n-A\n-B\n-C\n-D\n+a\n+b\n+c\n+d\n"},
+      // Path finding.
+      {__LINE__, "ABCDEFGH", "ABXEGH1", "  -/ -  +",
+       "@@ -1,8 +1,7 @@\n A\n B\n-C\n-D\n+X\n E\n-F\n G\n H\n+1\n"},
+      {__LINE__, "AAAABCCCC", "ABABCDCDC", "- /   + / ",
+       "@@ -1,9 +1,9 @@\n-A\n A\n-A\n+B\n A\n B\n C\n+D\n C\n-C\n+D\n C\n"},
+      {__LINE__, "ABCDE", "BCDCD", "-   +/",
+       "@@ -1,5 +1,5 @@\n-A\n B\n C\n D\n-E\n+C\n+D\n"},
+      {__LINE__, "ABCDEFGHIJKL", "BCDCDEFGJKLJK", "- ++     --   ++",
+       "@@ -1,4 +1,5 @@\n-A\n B\n+C\n+D\n C\n D\n"
+       "@@ -6,7 +7,7 @@\n F\n G\n-H\n-I\n J\n K\n L\n+J\n+K\n"},
+      {}};
+  for (const Case* c = kCases; c->left; ++c) {
+    EXPECT_TRUE(c->expected_edits ==
+                EditsToString(CalculateOptimalEdits(CharsToIndices(c->left),
+                                                    CharsToIndices(c->right))))
+        << "Left <" << c->left << "> Right <" << c->right << "> Edits <"
+        << EditsToString(CalculateOptimalEdits(
+               CharsToIndices(c->left), CharsToIndices(c->right))) << ">";
+    EXPECT_TRUE(c->expected_diff == CreateUnifiedDiff(CharsToLines(c->left),
+                                                      CharsToLines(c->right)))
+        << "Left <" << c->left << "> Right <" << c->right << "> Diff <"
+        << CreateUnifiedDiff(CharsToLines(c->left), CharsToLines(c->right))
+        << ">";
+  }
+}
+
+// Tests EqFailure(), used for implementing *EQ* assertions.
+TEST(AssertionTest, EqFailure) {
+  const std::string foo_val("5"), bar_val("6");
+  const std::string msg1(
+      EqFailure("foo", "bar", foo_val, bar_val, false)
+      .failure_message());
+  EXPECT_STREQ(
+      "Expected equality of these values:\n"
+      "  foo\n"
+      "    Which is: 5\n"
+      "  bar\n"
+      "    Which is: 6",
+      msg1.c_str());
+
+  const std::string msg2(
+      EqFailure("foo", "6", foo_val, bar_val, false)
+      .failure_message());
+  EXPECT_STREQ(
+      "Expected equality of these values:\n"
+      "  foo\n"
+      "    Which is: 5\n"
+      "  6",
+      msg2.c_str());
+
+  const std::string msg3(
+      EqFailure("5", "bar", foo_val, bar_val, false)
+      .failure_message());
+  EXPECT_STREQ(
+      "Expected equality of these values:\n"
+      "  5\n"
+      "  bar\n"
+      "    Which is: 6",
+      msg3.c_str());
+
+  const std::string msg4(
+      EqFailure("5", "6", foo_val, bar_val, false).failure_message());
+  EXPECT_STREQ(
+      "Expected equality of these values:\n"
+      "  5\n"
+      "  6",
+      msg4.c_str());
+
+  const std::string msg5(
+      EqFailure("foo", "bar",
+                std::string("\"x\""), std::string("\"y\""),
+                true).failure_message());
+  EXPECT_STREQ(
+      "Expected equality of these values:\n"
+      "  foo\n"
+      "    Which is: \"x\"\n"
+      "  bar\n"
+      "    Which is: \"y\"\n"
+      "Ignoring case",
+      msg5.c_str());
+}
+
+TEST(AssertionTest, EqFailureWithDiff) {
+  const std::string left(
+      "1\\n2XXX\\n3\\n5\\n6\\n7\\n8\\n9\\n10\\n11\\n12XXX\\n13\\n14\\n15");
+  const std::string right(
+      "1\\n2\\n3\\n4\\n5\\n6\\n7\\n8\\n9\\n11\\n12\\n13\\n14");
+  const std::string msg1(
+      EqFailure("left", "right", left, right, false).failure_message());
+  EXPECT_STREQ(
+      "Expected equality of these values:\n"
+      "  left\n"
+      "    Which is: "
+      "1\\n2XXX\\n3\\n5\\n6\\n7\\n8\\n9\\n10\\n11\\n12XXX\\n13\\n14\\n15\n"
+      "  right\n"
+      "    Which is: 1\\n2\\n3\\n4\\n5\\n6\\n7\\n8\\n9\\n11\\n12\\n13\\n14\n"
+      "With diff:\n@@ -1,5 +1,6 @@\n 1\n-2XXX\n+2\n 3\n+4\n 5\n 6\n"
+      "@@ -7,8 +8,6 @@\n 8\n 9\n-10\n 11\n-12XXX\n+12\n 13\n 14\n-15\n",
+      msg1.c_str());
+}
+
+// Tests AppendUserMessage(), used for implementing the *EQ* macros.
+TEST(AssertionTest, AppendUserMessage) {
+  const std::string foo("foo");
+
+  Message msg;
+  EXPECT_STREQ("foo",
+               AppendUserMessage(foo, msg).c_str());
+
+  msg << "bar";
+  EXPECT_STREQ("foo\nbar",
+               AppendUserMessage(foo, msg).c_str());
+}
+
+#ifdef __BORLANDC__
+// Silences warnings: "Condition is always true", "Unreachable code"
+# pragma option push -w-ccc -w-rch
+#endif
+
+// Tests ASSERT_TRUE.
+TEST(AssertionTest, ASSERT_TRUE) {
+  ASSERT_TRUE(2 > 1);  // NOLINT
+  EXPECT_FATAL_FAILURE(ASSERT_TRUE(2 < 1),
+                       "2 < 1");
+}
+
+// Tests ASSERT_TRUE(predicate) for predicates returning AssertionResult.
+TEST(AssertionTest, AssertTrueWithAssertionResult) {
+  ASSERT_TRUE(ResultIsEven(2));
+#ifndef __BORLANDC__
+  // ICE's in C++Builder.
+  EXPECT_FATAL_FAILURE(ASSERT_TRUE(ResultIsEven(3)),
+                       "Value of: ResultIsEven(3)\n"
+                       "  Actual: false (3 is odd)\n"
+                       "Expected: true");
+#endif
+  ASSERT_TRUE(ResultIsEvenNoExplanation(2));
+  EXPECT_FATAL_FAILURE(ASSERT_TRUE(ResultIsEvenNoExplanation(3)),
+                       "Value of: ResultIsEvenNoExplanation(3)\n"
+                       "  Actual: false (3 is odd)\n"
+                       "Expected: true");
+}
+
+// Tests ASSERT_FALSE.
+TEST(AssertionTest, ASSERT_FALSE) {
+  ASSERT_FALSE(2 < 1);  // NOLINT
+  EXPECT_FATAL_FAILURE(ASSERT_FALSE(2 > 1),
+                       "Value of: 2 > 1\n"
+                       "  Actual: true\n"
+                       "Expected: false");
+}
+
+// Tests ASSERT_FALSE(predicate) for predicates returning AssertionResult.
+TEST(AssertionTest, AssertFalseWithAssertionResult) {
+  ASSERT_FALSE(ResultIsEven(3));
+#ifndef __BORLANDC__
+  // ICE's in C++Builder.
+  EXPECT_FATAL_FAILURE(ASSERT_FALSE(ResultIsEven(2)),
+                       "Value of: ResultIsEven(2)\n"
+                       "  Actual: true (2 is even)\n"
+                       "Expected: false");
+#endif
+  ASSERT_FALSE(ResultIsEvenNoExplanation(3));
+  EXPECT_FATAL_FAILURE(ASSERT_FALSE(ResultIsEvenNoExplanation(2)),
+                       "Value of: ResultIsEvenNoExplanation(2)\n"
+                       "  Actual: true\n"
+                       "Expected: false");
+}
+
+#ifdef __BORLANDC__
+// Restores warnings after previous "#pragma option push" suppressed them
+# pragma option pop
+#endif
+
+// Tests using ASSERT_EQ on double values.  The purpose is to make
+// sure that the specialization we did for integer and anonymous enums
+// isn't used for double arguments.
+TEST(ExpectTest, ASSERT_EQ_Double) {
+  // A success.
+  ASSERT_EQ(5.6, 5.6);
+
+  // A failure.
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(5.1, 5.2),
+                       "5.1");
+}
+
+// Tests ASSERT_EQ.
+TEST(AssertionTest, ASSERT_EQ) {
+  ASSERT_EQ(5, 2 + 3);
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(5, 2*3),
+                       "Expected equality of these values:\n"
+                       "  5\n"
+                       "  2*3\n"
+                       "    Which is: 6");
+}
+
+// Tests ASSERT_EQ(NULL, pointer).
+TEST(AssertionTest, ASSERT_EQ_NULL) {
+  // A success.
+  const char* p = nullptr;
+  // Some older GCC versions may issue a spurious warning in this or the next
+  // assertion statement. This warning should not be suppressed with
+  // static_cast since the test verifies the ability to use bare NULL as the
+  // expected parameter to the macro.
+  ASSERT_EQ(nullptr, p);
+
+  // A failure.
+  static int n = 0;
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(nullptr, &n), "  &n\n    Which is:");
+}
+
+// Tests ASSERT_EQ(0, non_pointer).  Since the literal 0 can be
+// treated as a null pointer by the compiler, we need to make sure
+// that ASSERT_EQ(0, non_pointer) isn't interpreted by Google Test as
+// ASSERT_EQ(static_cast<void*>(NULL), non_pointer).
+TEST(ExpectTest, ASSERT_EQ_0) {
+  int n = 0;
+
+  // A success.
+  ASSERT_EQ(0, n);
+
+  // A failure.
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(0, 5.6),
+                       "  0\n  5.6");
+}
+
+// Tests ASSERT_NE.
+TEST(AssertionTest, ASSERT_NE) {
+  ASSERT_NE(6, 7);
+  EXPECT_FATAL_FAILURE(ASSERT_NE('a', 'a'),
+                       "Expected: ('a') != ('a'), "
+                       "actual: 'a' (97, 0x61) vs 'a' (97, 0x61)");
+}
+
+// Tests ASSERT_LE.
+TEST(AssertionTest, ASSERT_LE) {
+  ASSERT_LE(2, 3);
+  ASSERT_LE(2, 2);
+  EXPECT_FATAL_FAILURE(ASSERT_LE(2, 0),
+                       "Expected: (2) <= (0), actual: 2 vs 0");
+}
+
+// Tests ASSERT_LT.
+TEST(AssertionTest, ASSERT_LT) {
+  ASSERT_LT(2, 3);
+  EXPECT_FATAL_FAILURE(ASSERT_LT(2, 2),
+                       "Expected: (2) < (2), actual: 2 vs 2");
+}
+
+// Tests ASSERT_GE.
+TEST(AssertionTest, ASSERT_GE) {
+  ASSERT_GE(2, 1);
+  ASSERT_GE(2, 2);
+  EXPECT_FATAL_FAILURE(ASSERT_GE(2, 3),
+                       "Expected: (2) >= (3), actual: 2 vs 3");
+}
+
+// Tests ASSERT_GT.
+TEST(AssertionTest, ASSERT_GT) {
+  ASSERT_GT(2, 1);
+  EXPECT_FATAL_FAILURE(ASSERT_GT(2, 2),
+                       "Expected: (2) > (2), actual: 2 vs 2");
+}
+
+#if GTEST_HAS_EXCEPTIONS
+
+void ThrowNothing() {}
+
+// Tests ASSERT_THROW.
+TEST(AssertionTest, ASSERT_THROW) {
+  ASSERT_THROW(ThrowAnInteger(), int);
+
+# ifndef __BORLANDC__
+
+  // ICE's in C++Builder 2007 and 2009.
+  EXPECT_FATAL_FAILURE(
+      ASSERT_THROW(ThrowAnInteger(), bool),
+      "Expected: ThrowAnInteger() throws an exception of type bool.\n"
+      "  Actual: it throws a different type.");
+# endif
+
+  EXPECT_FATAL_FAILURE(
+      ASSERT_THROW(ThrowNothing(), bool),
+      "Expected: ThrowNothing() throws an exception of type bool.\n"
+      "  Actual: it throws nothing.");
+}
+
+// Tests ASSERT_NO_THROW.
+TEST(AssertionTest, ASSERT_NO_THROW) {
+  ASSERT_NO_THROW(ThrowNothing());
+  EXPECT_FATAL_FAILURE(ASSERT_NO_THROW(ThrowAnInteger()),
+                       "Expected: ThrowAnInteger() doesn't throw an exception."
+                       "\n  Actual: it throws.");
+}
+
+// Tests ASSERT_ANY_THROW.
+TEST(AssertionTest, ASSERT_ANY_THROW) {
+  ASSERT_ANY_THROW(ThrowAnInteger());
+  EXPECT_FATAL_FAILURE(
+      ASSERT_ANY_THROW(ThrowNothing()),
+      "Expected: ThrowNothing() throws an exception.\n"
+      "  Actual: it doesn't.");
+}
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
+// Makes sure we deal with the precedence of <<.  This test should
+// compile.
+TEST(AssertionTest, AssertPrecedence) {
+  ASSERT_EQ(1 < 2, true);
+  bool false_value = false;
+  ASSERT_EQ(true && false_value, false);
+}
+
+// A subroutine used by the following test.
+void TestEq1(int x) {
+  ASSERT_EQ(1, x);
+}
+
+// Tests calling a test subroutine that's not part of a fixture.
+TEST(AssertionTest, NonFixtureSubroutine) {
+  EXPECT_FATAL_FAILURE(TestEq1(2),
+                       "  x\n    Which is: 2");
+}
+
+// An uncopyable class.
+class Uncopyable {
+ public:
+  explicit Uncopyable(int a_value) : value_(a_value) {}
+
+  int value() const { return value_; }
+  bool operator==(const Uncopyable& rhs) const {
+    return value() == rhs.value();
+  }
+ private:
+  // This constructor deliberately has no implementation, as we don't
+  // want this class to be copyable.
+  Uncopyable(const Uncopyable&);  // NOLINT
+
+  int value_;
+};
+
+::std::ostream& operator<<(::std::ostream& os, const Uncopyable& value) {
+  return os << value.value();
+}
+
+
+bool IsPositiveUncopyable(const Uncopyable& x) {
+  return x.value() > 0;
+}
+
+// A subroutine used by the following test.
+void TestAssertNonPositive() {
+  Uncopyable y(-1);
+  ASSERT_PRED1(IsPositiveUncopyable, y);
+}
+// A subroutine used by the following test.
+void TestAssertEqualsUncopyable() {
+  Uncopyable x(5);
+  Uncopyable y(-1);
+  ASSERT_EQ(x, y);
+}
+
+// Tests that uncopyable objects can be used in assertions.
+TEST(AssertionTest, AssertWorksWithUncopyableObject) {
+  Uncopyable x(5);
+  ASSERT_PRED1(IsPositiveUncopyable, x);
+  ASSERT_EQ(x, x);
+  EXPECT_FATAL_FAILURE(TestAssertNonPositive(),
+    "IsPositiveUncopyable(y) evaluates to false, where\ny evaluates to -1");
+  EXPECT_FATAL_FAILURE(TestAssertEqualsUncopyable(),
+                       "Expected equality of these values:\n"
+                       "  x\n    Which is: 5\n  y\n    Which is: -1");
+}
+
+// Tests that uncopyable objects can be used in expects.
+TEST(AssertionTest, ExpectWorksWithUncopyableObject) {
+  Uncopyable x(5);
+  EXPECT_PRED1(IsPositiveUncopyable, x);
+  Uncopyable y(-1);
+  EXPECT_NONFATAL_FAILURE(EXPECT_PRED1(IsPositiveUncopyable, y),
+    "IsPositiveUncopyable(y) evaluates to false, where\ny evaluates to -1");
+  EXPECT_EQ(x, x);
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(x, y),
+                          "Expected equality of these values:\n"
+                          "  x\n    Which is: 5\n  y\n    Which is: -1");
+}
+
+enum NamedEnum {
+  kE1 = 0,
+  kE2 = 1
+};
+
+TEST(AssertionTest, NamedEnum) {
+  EXPECT_EQ(kE1, kE1);
+  EXPECT_LT(kE1, kE2);
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(kE1, kE2), "Which is: 0");
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(kE1, kE2), "Which is: 1");
+}
+
+// Sun Studio and HP aCC2reject this code.
+#if !defined(__SUNPRO_CC) && !defined(__HP_aCC)
+
+// Tests using assertions with anonymous enums.
+enum {
+  kCaseA = -1,
+
+# if GTEST_OS_LINUX
+
+  // We want to test the case where the size of the anonymous enum is
+  // larger than sizeof(int), to make sure our implementation of the
+  // assertions doesn't truncate the enums.  However, MSVC
+  // (incorrectly) doesn't allow an enum value to exceed the range of
+  // an int, so this has to be conditionally compiled.
+  //
+  // On Linux, kCaseB and kCaseA have the same value when truncated to
+  // int size.  We want to test whether this will confuse the
+  // assertions.
+  kCaseB = testing::internal::kMaxBiggestInt,
+
+# else
+
+  kCaseB = INT_MAX,
+
+# endif  // GTEST_OS_LINUX
+
+  kCaseC = 42
+};
+
+TEST(AssertionTest, AnonymousEnum) {
+# if GTEST_OS_LINUX
+
+  EXPECT_EQ(static_cast<int>(kCaseA), static_cast<int>(kCaseB));
+
+# endif  // GTEST_OS_LINUX
+
+  EXPECT_EQ(kCaseA, kCaseA);
+  EXPECT_NE(kCaseA, kCaseB);
+  EXPECT_LT(kCaseA, kCaseB);
+  EXPECT_LE(kCaseA, kCaseB);
+  EXPECT_GT(kCaseB, kCaseA);
+  EXPECT_GE(kCaseA, kCaseA);
+  EXPECT_NONFATAL_FAILURE(EXPECT_GE(kCaseA, kCaseB),
+                          "(kCaseA) >= (kCaseB)");
+  EXPECT_NONFATAL_FAILURE(EXPECT_GE(kCaseA, kCaseC),
+                          "-1 vs 42");
+
+  ASSERT_EQ(kCaseA, kCaseA);
+  ASSERT_NE(kCaseA, kCaseB);
+  ASSERT_LT(kCaseA, kCaseB);
+  ASSERT_LE(kCaseA, kCaseB);
+  ASSERT_GT(kCaseB, kCaseA);
+  ASSERT_GE(kCaseA, kCaseA);
+
+# ifndef __BORLANDC__
+
+  // ICE's in C++Builder.
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(kCaseA, kCaseB),
+                       "  kCaseB\n    Which is: ");
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(kCaseA, kCaseC),
+                       "\n    Which is: 42");
+# endif
+
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(kCaseA, kCaseC),
+                       "\n    Which is: -1");
+}
+
+#endif  // !GTEST_OS_MAC && !defined(__SUNPRO_CC)
+
+#if GTEST_OS_WINDOWS
+
+static HRESULT UnexpectedHRESULTFailure() {
+  return E_UNEXPECTED;
+}
+
+static HRESULT OkHRESULTSuccess() {
+  return S_OK;
+}
+
+static HRESULT FalseHRESULTSuccess() {
+  return S_FALSE;
+}
+
+// HRESULT assertion tests test both zero and non-zero
+// success codes as well as failure message for each.
+//
+// Windows CE doesn't support message texts.
+TEST(HRESULTAssertionTest, EXPECT_HRESULT_SUCCEEDED) {
+  EXPECT_HRESULT_SUCCEEDED(S_OK);
+  EXPECT_HRESULT_SUCCEEDED(S_FALSE);
+
+  EXPECT_NONFATAL_FAILURE(EXPECT_HRESULT_SUCCEEDED(UnexpectedHRESULTFailure()),
+    "Expected: (UnexpectedHRESULTFailure()) succeeds.\n"
+    "  Actual: 0x8000FFFF");
+}
+
+TEST(HRESULTAssertionTest, ASSERT_HRESULT_SUCCEEDED) {
+  ASSERT_HRESULT_SUCCEEDED(S_OK);
+  ASSERT_HRESULT_SUCCEEDED(S_FALSE);
+
+  EXPECT_FATAL_FAILURE(ASSERT_HRESULT_SUCCEEDED(UnexpectedHRESULTFailure()),
+    "Expected: (UnexpectedHRESULTFailure()) succeeds.\n"
+    "  Actual: 0x8000FFFF");
+}
+
+TEST(HRESULTAssertionTest, EXPECT_HRESULT_FAILED) {
+  EXPECT_HRESULT_FAILED(E_UNEXPECTED);
+
+  EXPECT_NONFATAL_FAILURE(EXPECT_HRESULT_FAILED(OkHRESULTSuccess()),
+    "Expected: (OkHRESULTSuccess()) fails.\n"
+    "  Actual: 0x0");
+  EXPECT_NONFATAL_FAILURE(EXPECT_HRESULT_FAILED(FalseHRESULTSuccess()),
+    "Expected: (FalseHRESULTSuccess()) fails.\n"
+    "  Actual: 0x1");
+}
+
+TEST(HRESULTAssertionTest, ASSERT_HRESULT_FAILED) {
+  ASSERT_HRESULT_FAILED(E_UNEXPECTED);
+
+# ifndef __BORLANDC__
+
+  // ICE's in C++Builder 2007 and 2009.
+  EXPECT_FATAL_FAILURE(ASSERT_HRESULT_FAILED(OkHRESULTSuccess()),
+    "Expected: (OkHRESULTSuccess()) fails.\n"
+    "  Actual: 0x0");
+# endif
+
+  EXPECT_FATAL_FAILURE(ASSERT_HRESULT_FAILED(FalseHRESULTSuccess()),
+    "Expected: (FalseHRESULTSuccess()) fails.\n"
+    "  Actual: 0x1");
+}
+
+// Tests that streaming to the HRESULT macros works.
+TEST(HRESULTAssertionTest, Streaming) {
+  EXPECT_HRESULT_SUCCEEDED(S_OK) << "unexpected failure";
+  ASSERT_HRESULT_SUCCEEDED(S_OK) << "unexpected failure";
+  EXPECT_HRESULT_FAILED(E_UNEXPECTED) << "unexpected failure";
+  ASSERT_HRESULT_FAILED(E_UNEXPECTED) << "unexpected failure";
+
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_HRESULT_SUCCEEDED(E_UNEXPECTED) << "expected failure",
+      "expected failure");
+
+# ifndef __BORLANDC__
+
+  // ICE's in C++Builder 2007 and 2009.
+  EXPECT_FATAL_FAILURE(
+      ASSERT_HRESULT_SUCCEEDED(E_UNEXPECTED) << "expected failure",
+      "expected failure");
+# endif
+
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_HRESULT_FAILED(S_OK) << "expected failure",
+      "expected failure");
+
+  EXPECT_FATAL_FAILURE(
+      ASSERT_HRESULT_FAILED(S_OK) << "expected failure",
+      "expected failure");
+}
+
+#endif  // GTEST_OS_WINDOWS
+
+#ifdef __BORLANDC__
+// Silences warnings: "Condition is always true", "Unreachable code"
+# pragma option push -w-ccc -w-rch
+#endif
+
+// Tests that the assertion macros behave like single statements.
+TEST(AssertionSyntaxTest, BasicAssertionsBehavesLikeSingleStatement) {
+  if (AlwaysFalse())
+    ASSERT_TRUE(false) << "This should never be executed; "
+                          "It's a compilation test only.";
+
+  if (AlwaysTrue())
+    EXPECT_FALSE(false);
+  else
+    ;  // NOLINT
+
+  if (AlwaysFalse())
+    ASSERT_LT(1, 3);
+
+  if (AlwaysFalse())
+    ;  // NOLINT
+  else
+    EXPECT_GT(3, 2) << "";
+}
+
+#if GTEST_HAS_EXCEPTIONS
+// Tests that the compiler will not complain about unreachable code in the
+// EXPECT_THROW/EXPECT_ANY_THROW/EXPECT_NO_THROW macros.
+TEST(ExpectThrowTest, DoesNotGenerateUnreachableCodeWarning) {
+  int n = 0;
+
+  EXPECT_THROW(throw 1, int);
+  EXPECT_NONFATAL_FAILURE(EXPECT_THROW(n++, int), "");
+  EXPECT_NONFATAL_FAILURE(EXPECT_THROW(throw 1, const char*), "");
+  EXPECT_NO_THROW(n++);
+  EXPECT_NONFATAL_FAILURE(EXPECT_NO_THROW(throw 1), "");
+  EXPECT_ANY_THROW(throw 1);
+  EXPECT_NONFATAL_FAILURE(EXPECT_ANY_THROW(n++), "");
+}
+
+TEST(AssertionSyntaxTest, ExceptionAssertionsBehavesLikeSingleStatement) {
+  if (AlwaysFalse())
+    EXPECT_THROW(ThrowNothing(), bool);
+
+  if (AlwaysTrue())
+    EXPECT_THROW(ThrowAnInteger(), int);
+  else
+    ;  // NOLINT
+
+  if (AlwaysFalse())
+    EXPECT_NO_THROW(ThrowAnInteger());
+
+  if (AlwaysTrue())
+    EXPECT_NO_THROW(ThrowNothing());
+  else
+    ;  // NOLINT
+
+  if (AlwaysFalse())
+    EXPECT_ANY_THROW(ThrowNothing());
+
+  if (AlwaysTrue())
+    EXPECT_ANY_THROW(ThrowAnInteger());
+  else
+    ;  // NOLINT
+}
+#endif  // GTEST_HAS_EXCEPTIONS
+
+TEST(AssertionSyntaxTest, NoFatalFailureAssertionsBehavesLikeSingleStatement) {
+  if (AlwaysFalse())
+    EXPECT_NO_FATAL_FAILURE(FAIL()) << "This should never be executed. "
+                                    << "It's a compilation test only.";
+  else
+    ;  // NOLINT
+
+  if (AlwaysFalse())
+    ASSERT_NO_FATAL_FAILURE(FAIL()) << "";
+  else
+    ;  // NOLINT
+
+  if (AlwaysTrue())
+    EXPECT_NO_FATAL_FAILURE(SUCCEED());
+  else
+    ;  // NOLINT
+
+  if (AlwaysFalse())
+    ;  // NOLINT
+  else
+    ASSERT_NO_FATAL_FAILURE(SUCCEED());
+}
+
+// Tests that the assertion macros work well with switch statements.
+TEST(AssertionSyntaxTest, WorksWithSwitch) {
+  switch (0) {
+    case 1:
+      break;
+    default:
+      ASSERT_TRUE(true);
+  }
+
+  switch (0)
+    case 0:
+      EXPECT_FALSE(false) << "EXPECT_FALSE failed in switch case";
+
+  // Binary assertions are implemented using a different code path
+  // than the Boolean assertions.  Hence we test them separately.
+  switch (0) {
+    case 1:
+    default:
+      ASSERT_EQ(1, 1) << "ASSERT_EQ failed in default switch handler";
+  }
+
+  switch (0)
+    case 0:
+      EXPECT_NE(1, 2);
+}
+
+#if GTEST_HAS_EXCEPTIONS
+
+void ThrowAString() {
+    throw "std::string";
+}
+
+// Test that the exception assertion macros compile and work with const
+// type qualifier.
+TEST(AssertionSyntaxTest, WorksWithConst) {
+    ASSERT_THROW(ThrowAString(), const char*);
+
+    EXPECT_THROW(ThrowAString(), const char*);
+}
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
+}  // namespace
+
+namespace testing {
+
+// Tests that Google Test tracks SUCCEED*.
+TEST(SuccessfulAssertionTest, SUCCEED) {
+  SUCCEED();
+  SUCCEED() << "OK";
+  EXPECT_EQ(2, GetUnitTestImpl()->current_test_result()->total_part_count());
+}
+
+// Tests that Google Test doesn't track successful EXPECT_*.
+TEST(SuccessfulAssertionTest, EXPECT) {
+  EXPECT_TRUE(true);
+  EXPECT_EQ(0, GetUnitTestImpl()->current_test_result()->total_part_count());
+}
+
+// Tests that Google Test doesn't track successful EXPECT_STR*.
+TEST(SuccessfulAssertionTest, EXPECT_STR) {
+  EXPECT_STREQ("", "");
+  EXPECT_EQ(0, GetUnitTestImpl()->current_test_result()->total_part_count());
+}
+
+// Tests that Google Test doesn't track successful ASSERT_*.
+TEST(SuccessfulAssertionTest, ASSERT) {
+  ASSERT_TRUE(true);
+  EXPECT_EQ(0, GetUnitTestImpl()->current_test_result()->total_part_count());
+}
+
+// Tests that Google Test doesn't track successful ASSERT_STR*.
+TEST(SuccessfulAssertionTest, ASSERT_STR) {
+  ASSERT_STREQ("", "");
+  EXPECT_EQ(0, GetUnitTestImpl()->current_test_result()->total_part_count());
+}
+
+}  // namespace testing
+
+namespace {
+
+// Tests the message streaming variation of assertions.
+
+TEST(AssertionWithMessageTest, EXPECT) {
+  EXPECT_EQ(1, 1) << "This should succeed.";
+  EXPECT_NONFATAL_FAILURE(EXPECT_NE(1, 1) << "Expected failure #1.",
+                          "Expected failure #1");
+  EXPECT_LE(1, 2) << "This should succeed.";
+  EXPECT_NONFATAL_FAILURE(EXPECT_LT(1, 0) << "Expected failure #2.",
+                          "Expected failure #2.");
+  EXPECT_GE(1, 0) << "This should succeed.";
+  EXPECT_NONFATAL_FAILURE(EXPECT_GT(1, 2) << "Expected failure #3.",
+                          "Expected failure #3.");
+
+  EXPECT_STREQ("1", "1") << "This should succeed.";
+  EXPECT_NONFATAL_FAILURE(EXPECT_STRNE("1", "1") << "Expected failure #4.",
+                          "Expected failure #4.");
+  EXPECT_STRCASEEQ("a", "A") << "This should succeed.";
+  EXPECT_NONFATAL_FAILURE(EXPECT_STRCASENE("a", "A") << "Expected failure #5.",
+                          "Expected failure #5.");
+
+  EXPECT_FLOAT_EQ(1, 1) << "This should succeed.";
+  EXPECT_NONFATAL_FAILURE(EXPECT_DOUBLE_EQ(1, 1.2) << "Expected failure #6.",
+                          "Expected failure #6.");
+  EXPECT_NEAR(1, 1.1, 0.2) << "This should succeed.";
+}
+
+TEST(AssertionWithMessageTest, ASSERT) {
+  ASSERT_EQ(1, 1) << "This should succeed.";
+  ASSERT_NE(1, 2) << "This should succeed.";
+  ASSERT_LE(1, 2) << "This should succeed.";
+  ASSERT_LT(1, 2) << "This should succeed.";
+  ASSERT_GE(1, 0) << "This should succeed.";
+  EXPECT_FATAL_FAILURE(ASSERT_GT(1, 2) << "Expected failure.",
+                       "Expected failure.");
+}
+
+TEST(AssertionWithMessageTest, ASSERT_STR) {
+  ASSERT_STREQ("1", "1") << "This should succeed.";
+  ASSERT_STRNE("1", "2") << "This should succeed.";
+  ASSERT_STRCASEEQ("a", "A") << "This should succeed.";
+  EXPECT_FATAL_FAILURE(ASSERT_STRCASENE("a", "A") << "Expected failure.",
+                       "Expected failure.");
+}
+
+TEST(AssertionWithMessageTest, ASSERT_FLOATING) {
+  ASSERT_FLOAT_EQ(1, 1) << "This should succeed.";
+  ASSERT_DOUBLE_EQ(1, 1) << "This should succeed.";
+  EXPECT_FATAL_FAILURE(ASSERT_NEAR(1,1.2, 0.1) << "Expect failure.",  // NOLINT
+                       "Expect failure.");
+  // To work around a bug in gcc 2.95.0, there is intentionally no
+  // space after the first comma in the previous statement.
+}
+
+// Tests using ASSERT_FALSE with a streamed message.
+TEST(AssertionWithMessageTest, ASSERT_FALSE) {
+  ASSERT_FALSE(false) << "This shouldn't fail.";
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_FALSE(true) << "Expected failure: " << 2 << " > " << 1
+                       << " evaluates to " << true;
+  }, "Expected failure");
+}
+
+// Tests using FAIL with a streamed message.
+TEST(AssertionWithMessageTest, FAIL) {
+  EXPECT_FATAL_FAILURE(FAIL() << 0,
+                       "0");
+}
+
+// Tests using SUCCEED with a streamed message.
+TEST(AssertionWithMessageTest, SUCCEED) {
+  SUCCEED() << "Success == " << 1;
+}
+
+// Tests using ASSERT_TRUE with a streamed message.
+TEST(AssertionWithMessageTest, ASSERT_TRUE) {
+  ASSERT_TRUE(true) << "This should succeed.";
+  ASSERT_TRUE(true) << true;
+  EXPECT_FATAL_FAILURE(
+      {  // NOLINT
+        ASSERT_TRUE(false) << static_cast<const char*>(nullptr)
+                           << static_cast<char*>(nullptr);
+      },
+      "(null)(null)");
+}
+
+#if GTEST_OS_WINDOWS
+// Tests using wide strings in assertion messages.
+TEST(AssertionWithMessageTest, WideStringMessage) {
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_TRUE(false) << L"This failure is expected.\x8119";
+  }, "This failure is expected.");
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_EQ(1, 2) << "This failure is "
+                    << L"expected too.\x8120";
+  }, "This failure is expected too.");
+}
+#endif  // GTEST_OS_WINDOWS
+
+// Tests EXPECT_TRUE.
+TEST(ExpectTest, EXPECT_TRUE) {
+  EXPECT_TRUE(true) << "Intentional success";
+  EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(false) << "Intentional failure #1.",
+                          "Intentional failure #1.");
+  EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(false) << "Intentional failure #2.",
+                          "Intentional failure #2.");
+  EXPECT_TRUE(2 > 1);  // NOLINT
+  EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(2 < 1),
+                          "Value of: 2 < 1\n"
+                          "  Actual: false\n"
+                          "Expected: true");
+  EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(2 > 3),
+                          "2 > 3");
+}
+
+// Tests EXPECT_TRUE(predicate) for predicates returning AssertionResult.
+TEST(ExpectTest, ExpectTrueWithAssertionResult) {
+  EXPECT_TRUE(ResultIsEven(2));
+  EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(ResultIsEven(3)),
+                          "Value of: ResultIsEven(3)\n"
+                          "  Actual: false (3 is odd)\n"
+                          "Expected: true");
+  EXPECT_TRUE(ResultIsEvenNoExplanation(2));
+  EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(ResultIsEvenNoExplanation(3)),
+                          "Value of: ResultIsEvenNoExplanation(3)\n"
+                          "  Actual: false (3 is odd)\n"
+                          "Expected: true");
+}
+
+// Tests EXPECT_FALSE with a streamed message.
+TEST(ExpectTest, EXPECT_FALSE) {
+  EXPECT_FALSE(2 < 1);  // NOLINT
+  EXPECT_FALSE(false) << "Intentional success";
+  EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(true) << "Intentional failure #1.",
+                          "Intentional failure #1.");
+  EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(true) << "Intentional failure #2.",
+                          "Intentional failure #2.");
+  EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(2 > 1),
+                          "Value of: 2 > 1\n"
+                          "  Actual: true\n"
+                          "Expected: false");
+  EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(2 < 3),
+                          "2 < 3");
+}
+
+// Tests EXPECT_FALSE(predicate) for predicates returning AssertionResult.
+TEST(ExpectTest, ExpectFalseWithAssertionResult) {
+  EXPECT_FALSE(ResultIsEven(3));
+  EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(ResultIsEven(2)),
+                          "Value of: ResultIsEven(2)\n"
+                          "  Actual: true (2 is even)\n"
+                          "Expected: false");
+  EXPECT_FALSE(ResultIsEvenNoExplanation(3));
+  EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(ResultIsEvenNoExplanation(2)),
+                          "Value of: ResultIsEvenNoExplanation(2)\n"
+                          "  Actual: true\n"
+                          "Expected: false");
+}
+
+#ifdef __BORLANDC__
+// Restores warnings after previous "#pragma option push" suppressed them
+# pragma option pop
+#endif
+
+// Tests EXPECT_EQ.
+TEST(ExpectTest, EXPECT_EQ) {
+  EXPECT_EQ(5, 2 + 3);
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(5, 2*3),
+                          "Expected equality of these values:\n"
+                          "  5\n"
+                          "  2*3\n"
+                          "    Which is: 6");
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(5, 2 - 3),
+                          "2 - 3");
+}
+
+// Tests using EXPECT_EQ on double values.  The purpose is to make
+// sure that the specialization we did for integer and anonymous enums
+// isn't used for double arguments.
+TEST(ExpectTest, EXPECT_EQ_Double) {
+  // A success.
+  EXPECT_EQ(5.6, 5.6);
+
+  // A failure.
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(5.1, 5.2),
+                          "5.1");
+}
+
+// Tests EXPECT_EQ(NULL, pointer).
+TEST(ExpectTest, EXPECT_EQ_NULL) {
+  // A success.
+  const char* p = nullptr;
+  // Some older GCC versions may issue a spurious warning in this or the next
+  // assertion statement. This warning should not be suppressed with
+  // static_cast since the test verifies the ability to use bare NULL as the
+  // expected parameter to the macro.
+  EXPECT_EQ(nullptr, p);
+
+  // A failure.
+  int n = 0;
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(nullptr, &n), "  &n\n    Which is:");
+}
+
+// Tests EXPECT_EQ(0, non_pointer).  Since the literal 0 can be
+// treated as a null pointer by the compiler, we need to make sure
+// that EXPECT_EQ(0, non_pointer) isn't interpreted by Google Test as
+// EXPECT_EQ(static_cast<void*>(NULL), non_pointer).
+TEST(ExpectTest, EXPECT_EQ_0) {
+  int n = 0;
+
+  // A success.
+  EXPECT_EQ(0, n);
+
+  // A failure.
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(0, 5.6),
+                          "  0\n  5.6");
+}
+
+// Tests EXPECT_NE.
+TEST(ExpectTest, EXPECT_NE) {
+  EXPECT_NE(6, 7);
+
+  EXPECT_NONFATAL_FAILURE(EXPECT_NE('a', 'a'),
+                          "Expected: ('a') != ('a'), "
+                          "actual: 'a' (97, 0x61) vs 'a' (97, 0x61)");
+  EXPECT_NONFATAL_FAILURE(EXPECT_NE(2, 2),
+                          "2");
+  char* const p0 = nullptr;
+  EXPECT_NONFATAL_FAILURE(EXPECT_NE(p0, p0),
+                          "p0");
+  // Only way to get the Nokia compiler to compile the cast
+  // is to have a separate void* variable first. Putting
+  // the two casts on the same line doesn't work, neither does
+  // a direct C-style to char*.
+  void* pv1 = (void*)0x1234;  // NOLINT
+  char* const p1 = reinterpret_cast<char*>(pv1);
+  EXPECT_NONFATAL_FAILURE(EXPECT_NE(p1, p1),
+                          "p1");
+}
+
+// Tests EXPECT_LE.
+TEST(ExpectTest, EXPECT_LE) {
+  EXPECT_LE(2, 3);
+  EXPECT_LE(2, 2);
+  EXPECT_NONFATAL_FAILURE(EXPECT_LE(2, 0),
+                          "Expected: (2) <= (0), actual: 2 vs 0");
+  EXPECT_NONFATAL_FAILURE(EXPECT_LE(1.1, 0.9),
+                          "(1.1) <= (0.9)");
+}
+
+// Tests EXPECT_LT.
+TEST(ExpectTest, EXPECT_LT) {
+  EXPECT_LT(2, 3);
+  EXPECT_NONFATAL_FAILURE(EXPECT_LT(2, 2),
+                          "Expected: (2) < (2), actual: 2 vs 2");
+  EXPECT_NONFATAL_FAILURE(EXPECT_LT(2, 1),
+                          "(2) < (1)");
+}
+
+// Tests EXPECT_GE.
+TEST(ExpectTest, EXPECT_GE) {
+  EXPECT_GE(2, 1);
+  EXPECT_GE(2, 2);
+  EXPECT_NONFATAL_FAILURE(EXPECT_GE(2, 3),
+                          "Expected: (2) >= (3), actual: 2 vs 3");
+  EXPECT_NONFATAL_FAILURE(EXPECT_GE(0.9, 1.1),
+                          "(0.9) >= (1.1)");
+}
+
+// Tests EXPECT_GT.
+TEST(ExpectTest, EXPECT_GT) {
+  EXPECT_GT(2, 1);
+  EXPECT_NONFATAL_FAILURE(EXPECT_GT(2, 2),
+                          "Expected: (2) > (2), actual: 2 vs 2");
+  EXPECT_NONFATAL_FAILURE(EXPECT_GT(2, 3),
+                          "(2) > (3)");
+}
+
+#if GTEST_HAS_EXCEPTIONS
+
+// Tests EXPECT_THROW.
+TEST(ExpectTest, EXPECT_THROW) {
+  EXPECT_THROW(ThrowAnInteger(), int);
+  EXPECT_NONFATAL_FAILURE(EXPECT_THROW(ThrowAnInteger(), bool),
+                          "Expected: ThrowAnInteger() throws an exception of "
+                          "type bool.\n  Actual: it throws a different type.");
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_THROW(ThrowNothing(), bool),
+      "Expected: ThrowNothing() throws an exception of type bool.\n"
+      "  Actual: it throws nothing.");
+}
+
+// Tests EXPECT_NO_THROW.
+TEST(ExpectTest, EXPECT_NO_THROW) {
+  EXPECT_NO_THROW(ThrowNothing());
+  EXPECT_NONFATAL_FAILURE(EXPECT_NO_THROW(ThrowAnInteger()),
+                          "Expected: ThrowAnInteger() doesn't throw an "
+                          "exception.\n  Actual: it throws.");
+}
+
+// Tests EXPECT_ANY_THROW.
+TEST(ExpectTest, EXPECT_ANY_THROW) {
+  EXPECT_ANY_THROW(ThrowAnInteger());
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_ANY_THROW(ThrowNothing()),
+      "Expected: ThrowNothing() throws an exception.\n"
+      "  Actual: it doesn't.");
+}
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
+// Make sure we deal with the precedence of <<.
+TEST(ExpectTest, ExpectPrecedence) {
+  EXPECT_EQ(1 < 2, true);
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(true, true && false),
+                          "  true && false\n    Which is: false");
+}
+
+
+// Tests the StreamableToString() function.
+
+// Tests using StreamableToString() on a scalar.
+TEST(StreamableToStringTest, Scalar) {
+  EXPECT_STREQ("5", StreamableToString(5).c_str());
+}
+
+// Tests using StreamableToString() on a non-char pointer.
+TEST(StreamableToStringTest, Pointer) {
+  int n = 0;
+  int* p = &n;
+  EXPECT_STRNE("(null)", StreamableToString(p).c_str());
+}
+
+// Tests using StreamableToString() on a NULL non-char pointer.
+TEST(StreamableToStringTest, NullPointer) {
+  int* p = nullptr;
+  EXPECT_STREQ("(null)", StreamableToString(p).c_str());
+}
+
+// Tests using StreamableToString() on a C string.
+TEST(StreamableToStringTest, CString) {
+  EXPECT_STREQ("Foo", StreamableToString("Foo").c_str());
+}
+
+// Tests using StreamableToString() on a NULL C string.
+TEST(StreamableToStringTest, NullCString) {
+  char* p = nullptr;
+  EXPECT_STREQ("(null)", StreamableToString(p).c_str());
+}
+
+// Tests using streamable values as assertion messages.
+
+// Tests using std::string as an assertion message.
+TEST(StreamableTest, string) {
+  static const std::string str(
+      "This failure message is a std::string, and is expected.");
+  EXPECT_FATAL_FAILURE(FAIL() << str,
+                       str.c_str());
+}
+
+// Tests that we can output strings containing embedded NULs.
+// Limited to Linux because we can only do this with std::string's.
+TEST(StreamableTest, stringWithEmbeddedNUL) {
+  static const char char_array_with_nul[] =
+      "Here's a NUL\0 and some more string";
+  static const std::string string_with_nul(char_array_with_nul,
+                                           sizeof(char_array_with_nul)
+                                           - 1);  // drops the trailing NUL
+  EXPECT_FATAL_FAILURE(FAIL() << string_with_nul,
+                       "Here's a NUL\\0 and some more string");
+}
+
+// Tests that we can output a NUL char.
+TEST(StreamableTest, NULChar) {
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    FAIL() << "A NUL" << '\0' << " and some more string";
+  }, "A NUL\\0 and some more string");
+}
+
+// Tests using int as an assertion message.
+TEST(StreamableTest, int) {
+  EXPECT_FATAL_FAILURE(FAIL() << 900913,
+                       "900913");
+}
+
+// Tests using NULL char pointer as an assertion message.
+//
+// In MSVC, streaming a NULL char * causes access violation.  Google Test
+// implemented a workaround (substituting "(null)" for NULL).  This
+// tests whether the workaround works.
+TEST(StreamableTest, NullCharPtr) {
+  EXPECT_FATAL_FAILURE(FAIL() << static_cast<const char*>(nullptr), "(null)");
+}
+
+// Tests that basic IO manipulators (endl, ends, and flush) can be
+// streamed to testing::Message.
+TEST(StreamableTest, BasicIoManip) {
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    FAIL() << "Line 1." << std::endl
+           << "A NUL char " << std::ends << std::flush << " in line 2.";
+  }, "Line 1.\nA NUL char \\0 in line 2.");
+}
+
+// Tests the macros that haven't been covered so far.
+
+void AddFailureHelper(bool* aborted) {
+  *aborted = true;
+  ADD_FAILURE() << "Intentional failure.";
+  *aborted = false;
+}
+
+// Tests ADD_FAILURE.
+TEST(MacroTest, ADD_FAILURE) {
+  bool aborted = true;
+  EXPECT_NONFATAL_FAILURE(AddFailureHelper(&aborted),
+                          "Intentional failure.");
+  EXPECT_FALSE(aborted);
+}
+
+// Tests ADD_FAILURE_AT.
+TEST(MacroTest, ADD_FAILURE_AT) {
+  // Verifies that ADD_FAILURE_AT does generate a nonfatal failure and
+  // the failure message contains the user-streamed part.
+  EXPECT_NONFATAL_FAILURE(ADD_FAILURE_AT("foo.cc", 42) << "Wrong!", "Wrong!");
+
+  // Verifies that the user-streamed part is optional.
+  EXPECT_NONFATAL_FAILURE(ADD_FAILURE_AT("foo.cc", 42), "Failed");
+
+  // Unfortunately, we cannot verify that the failure message contains
+  // the right file path and line number the same way, as
+  // EXPECT_NONFATAL_FAILURE() doesn't get to see the file path and
+  // line number.  Instead, we do that in googletest-output-test_.cc.
+}
+
+// Tests FAIL.
+TEST(MacroTest, FAIL) {
+  EXPECT_FATAL_FAILURE(FAIL(),
+                       "Failed");
+  EXPECT_FATAL_FAILURE(FAIL() << "Intentional failure.",
+                       "Intentional failure.");
+}
+
+// Tests GTEST_FAIL_AT.
+TEST(MacroTest, GTEST_FAIL_AT) {
+  // Verifies that GTEST_FAIL_AT does generate a fatal failure and
+  // the failure message contains the user-streamed part.
+  EXPECT_FATAL_FAILURE(GTEST_FAIL_AT("foo.cc", 42) << "Wrong!", "Wrong!");
+
+  // Verifies that the user-streamed part is optional.
+  EXPECT_FATAL_FAILURE(GTEST_FAIL_AT("foo.cc", 42), "Failed");
+
+  // See the ADD_FAIL_AT test above to see how we test that the failure message
+  // contains the right filename and line number -- the same applies here.
+}
+
+// Tests SUCCEED
+TEST(MacroTest, SUCCEED) {
+  SUCCEED();
+  SUCCEED() << "Explicit success.";
+}
+
+// Tests for EXPECT_EQ() and ASSERT_EQ().
+//
+// These tests fail *intentionally*, s.t. the failure messages can be
+// generated and tested.
+//
+// We have different tests for different argument types.
+
+// Tests using bool values in {EXPECT|ASSERT}_EQ.
+TEST(EqAssertionTest, Bool) {
+  EXPECT_EQ(true,  true);
+  EXPECT_FATAL_FAILURE({
+      bool false_value = false;
+      ASSERT_EQ(false_value, true);
+    }, "  false_value\n    Which is: false\n  true");
+}
+
+// Tests using int values in {EXPECT|ASSERT}_EQ.
+TEST(EqAssertionTest, Int) {
+  ASSERT_EQ(32, 32);
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(32, 33),
+                          "  32\n  33");
+}
+
+// Tests using time_t values in {EXPECT|ASSERT}_EQ.
+TEST(EqAssertionTest, Time_T) {
+  EXPECT_EQ(static_cast<time_t>(0),
+            static_cast<time_t>(0));
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(static_cast<time_t>(0),
+                                 static_cast<time_t>(1234)),
+                       "1234");
+}
+
+// Tests using char values in {EXPECT|ASSERT}_EQ.
+TEST(EqAssertionTest, Char) {
+  ASSERT_EQ('z', 'z');
+  const char ch = 'b';
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ('\0', ch),
+                          "  ch\n    Which is: 'b'");
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ('a', ch),
+                          "  ch\n    Which is: 'b'");
+}
+
+// Tests using wchar_t values in {EXPECT|ASSERT}_EQ.
+TEST(EqAssertionTest, WideChar) {
+  EXPECT_EQ(L'b', L'b');
+
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(L'\0', L'x'),
+                          "Expected equality of these values:\n"
+                          "  L'\0'\n"
+                          "    Which is: L'\0' (0, 0x0)\n"
+                          "  L'x'\n"
+                          "    Which is: L'x' (120, 0x78)");
+
+  static wchar_t wchar;
+  wchar = L'b';
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(L'a', wchar),
+                          "wchar");
+  wchar = 0x8119;
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(static_cast<wchar_t>(0x8120), wchar),
+                       "  wchar\n    Which is: L'");
+}
+
+// Tests using ::std::string values in {EXPECT|ASSERT}_EQ.
+TEST(EqAssertionTest, StdString) {
+  // Compares a const char* to an std::string that has identical
+  // content.
+  ASSERT_EQ("Test", ::std::string("Test"));
+
+  // Compares two identical std::strings.
+  static const ::std::string str1("A * in the middle");
+  static const ::std::string str2(str1);
+  EXPECT_EQ(str1, str2);
+
+  // Compares a const char* to an std::string that has different
+  // content
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ("Test", ::std::string("test")),
+                          "\"test\"");
+
+  // Compares an std::string to a char* that has different content.
+  char* const p1 = const_cast<char*>("foo");
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(::std::string("bar"), p1),
+                          "p1");
+
+  // Compares two std::strings that have different contents, one of
+  // which having a NUL character in the middle.  This should fail.
+  static ::std::string str3(str1);
+  str3.at(2) = '\0';
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(str1, str3),
+                       "  str3\n    Which is: \"A \\0 in the middle\"");
+}
+
+#if GTEST_HAS_STD_WSTRING
+
+// Tests using ::std::wstring values in {EXPECT|ASSERT}_EQ.
+TEST(EqAssertionTest, StdWideString) {
+  // Compares two identical std::wstrings.
+  const ::std::wstring wstr1(L"A * in the middle");
+  const ::std::wstring wstr2(wstr1);
+  ASSERT_EQ(wstr1, wstr2);
+
+  // Compares an std::wstring to a const wchar_t* that has identical
+  // content.
+  const wchar_t kTestX8119[] = { 'T', 'e', 's', 't', 0x8119, '\0' };
+  EXPECT_EQ(::std::wstring(kTestX8119), kTestX8119);
+
+  // Compares an std::wstring to a const wchar_t* that has different
+  // content.
+  const wchar_t kTestX8120[] = { 'T', 'e', 's', 't', 0x8120, '\0' };
+  EXPECT_NONFATAL_FAILURE({  // NOLINT
+    EXPECT_EQ(::std::wstring(kTestX8119), kTestX8120);
+  }, "kTestX8120");
+
+  // Compares two std::wstrings that have different contents, one of
+  // which having a NUL character in the middle.
+  ::std::wstring wstr3(wstr1);
+  wstr3.at(2) = L'\0';
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(wstr1, wstr3),
+                          "wstr3");
+
+  // Compares a wchar_t* to an std::wstring that has different
+  // content.
+  EXPECT_FATAL_FAILURE({  // NOLINT
+    ASSERT_EQ(const_cast<wchar_t*>(L"foo"), ::std::wstring(L"bar"));
+  }, "");
+}
+
+#endif  // GTEST_HAS_STD_WSTRING
+
+// Tests using char pointers in {EXPECT|ASSERT}_EQ.
+TEST(EqAssertionTest, CharPointer) {
+  char* const p0 = nullptr;
+  // Only way to get the Nokia compiler to compile the cast
+  // is to have a separate void* variable first. Putting
+  // the two casts on the same line doesn't work, neither does
+  // a direct C-style to char*.
+  void* pv1 = (void*)0x1234;  // NOLINT
+  void* pv2 = (void*)0xABC0;  // NOLINT
+  char* const p1 = reinterpret_cast<char*>(pv1);
+  char* const p2 = reinterpret_cast<char*>(pv2);
+  ASSERT_EQ(p1, p1);
+
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p0, p2),
+                          "  p2\n    Which is:");
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p1, p2),
+                          "  p2\n    Which is:");
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(reinterpret_cast<char*>(0x1234),
+                                 reinterpret_cast<char*>(0xABC0)),
+                       "ABC0");
+}
+
+// Tests using wchar_t pointers in {EXPECT|ASSERT}_EQ.
+TEST(EqAssertionTest, WideCharPointer) {
+  wchar_t* const p0 = nullptr;
+  // Only way to get the Nokia compiler to compile the cast
+  // is to have a separate void* variable first. Putting
+  // the two casts on the same line doesn't work, neither does
+  // a direct C-style to char*.
+  void* pv1 = (void*)0x1234;  // NOLINT
+  void* pv2 = (void*)0xABC0;  // NOLINT
+  wchar_t* const p1 = reinterpret_cast<wchar_t*>(pv1);
+  wchar_t* const p2 = reinterpret_cast<wchar_t*>(pv2);
+  EXPECT_EQ(p0, p0);
+
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p0, p2),
+                          "  p2\n    Which is:");
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p1, p2),
+                          "  p2\n    Which is:");
+  void* pv3 = (void*)0x1234;  // NOLINT
+  void* pv4 = (void*)0xABC0;  // NOLINT
+  const wchar_t* p3 = reinterpret_cast<const wchar_t*>(pv3);
+  const wchar_t* p4 = reinterpret_cast<const wchar_t*>(pv4);
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(p3, p4),
+                          "p4");
+}
+
+// Tests using other types of pointers in {EXPECT|ASSERT}_EQ.
+TEST(EqAssertionTest, OtherPointer) {
+  ASSERT_EQ(static_cast<const int*>(nullptr), static_cast<const int*>(nullptr));
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(static_cast<const int*>(nullptr),
+                                 reinterpret_cast<const int*>(0x1234)),
+                       "0x1234");
+}
+
+// A class that supports binary comparison operators but not streaming.
+class UnprintableChar {
+ public:
+  explicit UnprintableChar(char ch) : char_(ch) {}
+
+  bool operator==(const UnprintableChar& rhs) const {
+    return char_ == rhs.char_;
+  }
+  bool operator!=(const UnprintableChar& rhs) const {
+    return char_ != rhs.char_;
+  }
+  bool operator<(const UnprintableChar& rhs) const {
+    return char_ < rhs.char_;
+  }
+  bool operator<=(const UnprintableChar& rhs) const {
+    return char_ <= rhs.char_;
+  }
+  bool operator>(const UnprintableChar& rhs) const {
+    return char_ > rhs.char_;
+  }
+  bool operator>=(const UnprintableChar& rhs) const {
+    return char_ >= rhs.char_;
+  }
+
+ private:
+  char char_;
+};
+
+// Tests that ASSERT_EQ() and friends don't require the arguments to
+// be printable.
+TEST(ComparisonAssertionTest, AcceptsUnprintableArgs) {
+  const UnprintableChar x('x'), y('y');
+  ASSERT_EQ(x, x);
+  EXPECT_NE(x, y);
+  ASSERT_LT(x, y);
+  EXPECT_LE(x, y);
+  ASSERT_GT(y, x);
+  EXPECT_GE(x, x);
+
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(x, y), "1-byte object <78>");
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(x, y), "1-byte object <79>");
+  EXPECT_NONFATAL_FAILURE(EXPECT_LT(y, y), "1-byte object <79>");
+  EXPECT_NONFATAL_FAILURE(EXPECT_GT(x, y), "1-byte object <78>");
+  EXPECT_NONFATAL_FAILURE(EXPECT_GT(x, y), "1-byte object <79>");
+
+  // Code tested by EXPECT_FATAL_FAILURE cannot reference local
+  // variables, so we have to write UnprintableChar('x') instead of x.
+#ifndef __BORLANDC__
+  // ICE's in C++Builder.
+  EXPECT_FATAL_FAILURE(ASSERT_NE(UnprintableChar('x'), UnprintableChar('x')),
+                       "1-byte object <78>");
+  EXPECT_FATAL_FAILURE(ASSERT_LE(UnprintableChar('y'), UnprintableChar('x')),
+                       "1-byte object <78>");
+#endif
+  EXPECT_FATAL_FAILURE(ASSERT_LE(UnprintableChar('y'), UnprintableChar('x')),
+                       "1-byte object <79>");
+  EXPECT_FATAL_FAILURE(ASSERT_GE(UnprintableChar('x'), UnprintableChar('y')),
+                       "1-byte object <78>");
+  EXPECT_FATAL_FAILURE(ASSERT_GE(UnprintableChar('x'), UnprintableChar('y')),
+                       "1-byte object <79>");
+}
+
+// Tests the FRIEND_TEST macro.
+
+// This class has a private member we want to test.  We will test it
+// both in a TEST and in a TEST_F.
+class Foo {
+ public:
+  Foo() {}
+
+ private:
+  int Bar() const { return 1; }
+
+  // Declares the friend tests that can access the private member
+  // Bar().
+  FRIEND_TEST(FRIEND_TEST_Test, TEST);
+  FRIEND_TEST(FRIEND_TEST_Test2, TEST_F);
+};
+
+// Tests that the FRIEND_TEST declaration allows a TEST to access a
+// class's private members.  This should compile.
+TEST(FRIEND_TEST_Test, TEST) {
+  ASSERT_EQ(1, Foo().Bar());
+}
+
+// The fixture needed to test using FRIEND_TEST with TEST_F.
+class FRIEND_TEST_Test2 : public Test {
+ protected:
+  Foo foo;
+};
+
+// Tests that the FRIEND_TEST declaration allows a TEST_F to access a
+// class's private members.  This should compile.
+TEST_F(FRIEND_TEST_Test2, TEST_F) {
+  ASSERT_EQ(1, foo.Bar());
+}
+
+// Tests the life cycle of Test objects.
+
+// The test fixture for testing the life cycle of Test objects.
+//
+// This class counts the number of live test objects that uses this
+// fixture.
+class TestLifeCycleTest : public Test {
+ protected:
+  // Constructor.  Increments the number of test objects that uses
+  // this fixture.
+  TestLifeCycleTest() { count_++; }
+
+  // Destructor.  Decrements the number of test objects that uses this
+  // fixture.
+  ~TestLifeCycleTest() override { count_--; }
+
+  // Returns the number of live test objects that uses this fixture.
+  int count() const { return count_; }
+
+ private:
+  static int count_;
+};
+
+int TestLifeCycleTest::count_ = 0;
+
+// Tests the life cycle of test objects.
+TEST_F(TestLifeCycleTest, Test1) {
+  // There should be only one test object in this test case that's
+  // currently alive.
+  ASSERT_EQ(1, count());
+}
+
+// Tests the life cycle of test objects.
+TEST_F(TestLifeCycleTest, Test2) {
+  // After Test1 is done and Test2 is started, there should still be
+  // only one live test object, as the object for Test1 should've been
+  // deleted.
+  ASSERT_EQ(1, count());
+}
+
+}  // namespace
+
+// Tests that the copy constructor works when it is NOT optimized away by
+// the compiler.
+TEST(AssertionResultTest, CopyConstructorWorksWhenNotOptimied) {
+  // Checks that the copy constructor doesn't try to dereference NULL pointers
+  // in the source object.
+  AssertionResult r1 = AssertionSuccess();
+  AssertionResult r2 = r1;
+  // The following line is added to prevent the compiler from optimizing
+  // away the constructor call.
+  r1 << "abc";
+
+  AssertionResult r3 = r1;
+  EXPECT_EQ(static_cast<bool>(r3), static_cast<bool>(r1));
+  EXPECT_STREQ("abc", r1.message());
+}
+
+// Tests that AssertionSuccess and AssertionFailure construct
+// AssertionResult objects as expected.
+TEST(AssertionResultTest, ConstructionWorks) {
+  AssertionResult r1 = AssertionSuccess();
+  EXPECT_TRUE(r1);
+  EXPECT_STREQ("", r1.message());
+
+  AssertionResult r2 = AssertionSuccess() << "abc";
+  EXPECT_TRUE(r2);
+  EXPECT_STREQ("abc", r2.message());
+
+  AssertionResult r3 = AssertionFailure();
+  EXPECT_FALSE(r3);
+  EXPECT_STREQ("", r3.message());
+
+  AssertionResult r4 = AssertionFailure() << "def";
+  EXPECT_FALSE(r4);
+  EXPECT_STREQ("def", r4.message());
+
+  AssertionResult r5 = AssertionFailure(Message() << "ghi");
+  EXPECT_FALSE(r5);
+  EXPECT_STREQ("ghi", r5.message());
+}
+
+// Tests that the negation flips the predicate result but keeps the message.
+TEST(AssertionResultTest, NegationWorks) {
+  AssertionResult r1 = AssertionSuccess() << "abc";
+  EXPECT_FALSE(!r1);
+  EXPECT_STREQ("abc", (!r1).message());
+
+  AssertionResult r2 = AssertionFailure() << "def";
+  EXPECT_TRUE(!r2);
+  EXPECT_STREQ("def", (!r2).message());
+}
+
+TEST(AssertionResultTest, StreamingWorks) {
+  AssertionResult r = AssertionSuccess();
+  r << "abc" << 'd' << 0 << true;
+  EXPECT_STREQ("abcd0true", r.message());
+}
+
+TEST(AssertionResultTest, CanStreamOstreamManipulators) {
+  AssertionResult r = AssertionSuccess();
+  r << "Data" << std::endl << std::flush << std::ends << "Will be visible";
+  EXPECT_STREQ("Data\n\\0Will be visible", r.message());
+}
+
+// The next test uses explicit conversion operators
+
+TEST(AssertionResultTest, ConstructibleFromContextuallyConvertibleToBool) {
+  struct ExplicitlyConvertibleToBool {
+    explicit operator bool() const { return value; }
+    bool value;
+  };
+  ExplicitlyConvertibleToBool v1 = {false};
+  ExplicitlyConvertibleToBool v2 = {true};
+  EXPECT_FALSE(v1);
+  EXPECT_TRUE(v2);
+}
+
+struct ConvertibleToAssertionResult {
+  operator AssertionResult() const { return AssertionResult(true); }
+};
+
+TEST(AssertionResultTest, ConstructibleFromImplicitlyConvertible) {
+  ConvertibleToAssertionResult obj;
+  EXPECT_TRUE(obj);
+}
+
+// Tests streaming a user type whose definition and operator << are
+// both in the global namespace.
+class Base {
+ public:
+  explicit Base(int an_x) : x_(an_x) {}
+  int x() const { return x_; }
+ private:
+  int x_;
+};
+std::ostream& operator<<(std::ostream& os,
+                         const Base& val) {
+  return os << val.x();
+}
+std::ostream& operator<<(std::ostream& os,
+                         const Base* pointer) {
+  return os << "(" << pointer->x() << ")";
+}
+
+TEST(MessageTest, CanStreamUserTypeInGlobalNameSpace) {
+  Message msg;
+  Base a(1);
+
+  msg << a << &a;  // Uses ::operator<<.
+  EXPECT_STREQ("1(1)", msg.GetString().c_str());
+}
+
+// Tests streaming a user type whose definition and operator<< are
+// both in an unnamed namespace.
+namespace {
+class MyTypeInUnnamedNameSpace : public Base {
+ public:
+  explicit MyTypeInUnnamedNameSpace(int an_x): Base(an_x) {}
+};
+std::ostream& operator<<(std::ostream& os,
+                         const MyTypeInUnnamedNameSpace& val) {
+  return os << val.x();
+}
+std::ostream& operator<<(std::ostream& os,
+                         const MyTypeInUnnamedNameSpace* pointer) {
+  return os << "(" << pointer->x() << ")";
+}
+}  // namespace
+
+TEST(MessageTest, CanStreamUserTypeInUnnamedNameSpace) {
+  Message msg;
+  MyTypeInUnnamedNameSpace a(1);
+
+  msg << a << &a;  // Uses <unnamed_namespace>::operator<<.
+  EXPECT_STREQ("1(1)", msg.GetString().c_str());
+}
+
+// Tests streaming a user type whose definition and operator<< are
+// both in a user namespace.
+namespace namespace1 {
+class MyTypeInNameSpace1 : public Base {
+ public:
+  explicit MyTypeInNameSpace1(int an_x): Base(an_x) {}
+};
+std::ostream& operator<<(std::ostream& os,
+                         const MyTypeInNameSpace1& val) {
+  return os << val.x();
+}
+std::ostream& operator<<(std::ostream& os,
+                         const MyTypeInNameSpace1* pointer) {
+  return os << "(" << pointer->x() << ")";
+}
+}  // namespace namespace1
+
+TEST(MessageTest, CanStreamUserTypeInUserNameSpace) {
+  Message msg;
+  namespace1::MyTypeInNameSpace1 a(1);
+
+  msg << a << &a;  // Uses namespace1::operator<<.
+  EXPECT_STREQ("1(1)", msg.GetString().c_str());
+}
+
+// Tests streaming a user type whose definition is in a user namespace
+// but whose operator<< is in the global namespace.
+namespace namespace2 {
+class MyTypeInNameSpace2 : public ::Base {
+ public:
+  explicit MyTypeInNameSpace2(int an_x): Base(an_x) {}
+};
+}  // namespace namespace2
+std::ostream& operator<<(std::ostream& os,
+                         const namespace2::MyTypeInNameSpace2& val) {
+  return os << val.x();
+}
+std::ostream& operator<<(std::ostream& os,
+                         const namespace2::MyTypeInNameSpace2* pointer) {
+  return os << "(" << pointer->x() << ")";
+}
+
+TEST(MessageTest, CanStreamUserTypeInUserNameSpaceWithStreamOperatorInGlobal) {
+  Message msg;
+  namespace2::MyTypeInNameSpace2 a(1);
+
+  msg << a << &a;  // Uses ::operator<<.
+  EXPECT_STREQ("1(1)", msg.GetString().c_str());
+}
+
+// Tests streaming NULL pointers to testing::Message.
+TEST(MessageTest, NullPointers) {
+  Message msg;
+  char* const p1 = nullptr;
+  unsigned char* const p2 = nullptr;
+  int* p3 = nullptr;
+  double* p4 = nullptr;
+  bool* p5 = nullptr;
+  Message* p6 = nullptr;
+
+  msg << p1 << p2 << p3 << p4 << p5 << p6;
+  ASSERT_STREQ("(null)(null)(null)(null)(null)(null)",
+               msg.GetString().c_str());
+}
+
+// Tests streaming wide strings to testing::Message.
+TEST(MessageTest, WideStrings) {
+  // Streams a NULL of type const wchar_t*.
+  const wchar_t* const_wstr = nullptr;
+  EXPECT_STREQ("(null)",
+               (Message() << const_wstr).GetString().c_str());
+
+  // Streams a NULL of type wchar_t*.
+  wchar_t* wstr = nullptr;
+  EXPECT_STREQ("(null)",
+               (Message() << wstr).GetString().c_str());
+
+  // Streams a non-NULL of type const wchar_t*.
+  const_wstr = L"abc\x8119";
+  EXPECT_STREQ("abc\xe8\x84\x99",
+               (Message() << const_wstr).GetString().c_str());
+
+  // Streams a non-NULL of type wchar_t*.
+  wstr = const_cast<wchar_t*>(const_wstr);
+  EXPECT_STREQ("abc\xe8\x84\x99",
+               (Message() << wstr).GetString().c_str());
+}
+
+
+// This line tests that we can define tests in the testing namespace.
+namespace testing {
+
+// Tests the TestInfo class.
+
+class TestInfoTest : public Test {
+ protected:
+  static const TestInfo* GetTestInfo(const char* test_name) {
+    const TestSuite* const test_suite =
+        GetUnitTestImpl()->GetTestSuite("TestInfoTest", "", nullptr, nullptr);
+
+    for (int i = 0; i < test_suite->total_test_count(); ++i) {
+      const TestInfo* const test_info = test_suite->GetTestInfo(i);
+      if (strcmp(test_name, test_info->name()) == 0)
+        return test_info;
+    }
+    return nullptr;
+  }
+
+  static const TestResult* GetTestResult(
+      const TestInfo* test_info) {
+    return test_info->result();
+  }
+};
+
+// Tests TestInfo::test_case_name() and TestInfo::name().
+TEST_F(TestInfoTest, Names) {
+  const TestInfo* const test_info = GetTestInfo("Names");
+
+  ASSERT_STREQ("TestInfoTest", test_info->test_case_name());
+  ASSERT_STREQ("Names", test_info->name());
+}
+
+// Tests TestInfo::result().
+TEST_F(TestInfoTest, result) {
+  const TestInfo* const test_info = GetTestInfo("result");
+
+  // Initially, there is no TestPartResult for this test.
+  ASSERT_EQ(0, GetTestResult(test_info)->total_part_count());
+
+  // After the previous assertion, there is still none.
+  ASSERT_EQ(0, GetTestResult(test_info)->total_part_count());
+}
+
+#define VERIFY_CODE_LOCATION \
+  const int expected_line = __LINE__ - 1; \
+  const TestInfo* const test_info = GetUnitTestImpl()->current_test_info(); \
+  ASSERT_TRUE(test_info); \
+  EXPECT_STREQ(__FILE__, test_info->file()); \
+  EXPECT_EQ(expected_line, test_info->line())
+
+TEST(CodeLocationForTEST, Verify) {
+  VERIFY_CODE_LOCATION;
+}
+
+class CodeLocationForTESTF : public Test {
+};
+
+TEST_F(CodeLocationForTESTF, Verify) {
+  VERIFY_CODE_LOCATION;
+}
+
+class CodeLocationForTESTP : public TestWithParam<int> {
+};
+
+TEST_P(CodeLocationForTESTP, Verify) {
+  VERIFY_CODE_LOCATION;
+}
+
+INSTANTIATE_TEST_SUITE_P(, CodeLocationForTESTP, Values(0));
+
+template <typename T>
+class CodeLocationForTYPEDTEST : public Test {
+};
+
+TYPED_TEST_SUITE(CodeLocationForTYPEDTEST, int);
+
+TYPED_TEST(CodeLocationForTYPEDTEST, Verify) {
+  VERIFY_CODE_LOCATION;
+}
+
+template <typename T>
+class CodeLocationForTYPEDTESTP : public Test {
+};
+
+TYPED_TEST_SUITE_P(CodeLocationForTYPEDTESTP);
+
+TYPED_TEST_P(CodeLocationForTYPEDTESTP, Verify) {
+  VERIFY_CODE_LOCATION;
+}
+
+REGISTER_TYPED_TEST_SUITE_P(CodeLocationForTYPEDTESTP, Verify);
+
+INSTANTIATE_TYPED_TEST_SUITE_P(My, CodeLocationForTYPEDTESTP, int);
+
+#undef VERIFY_CODE_LOCATION
+
+// Tests setting up and tearing down a test case.
+// Legacy API is deprecated but still available
+#ifndef REMOVE_LEGACY_TEST_CASEAPI
+class SetUpTestCaseTest : public Test {
+ protected:
+  // This will be called once before the first test in this test case
+  // is run.
+  static void SetUpTestCase() {
+    printf("Setting up the test case . . .\n");
+
+    // Initializes some shared resource.  In this simple example, we
+    // just create a C string.  More complex stuff can be done if
+    // desired.
+    shared_resource_ = "123";
+
+    // Increments the number of test cases that have been set up.
+    counter_++;
+
+    // SetUpTestCase() should be called only once.
+    EXPECT_EQ(1, counter_);
+  }
+
+  // This will be called once after the last test in this test case is
+  // run.
+  static void TearDownTestCase() {
+    printf("Tearing down the test case . . .\n");
+
+    // Decrements the number of test cases that have been set up.
+    counter_--;
+
+    // TearDownTestCase() should be called only once.
+    EXPECT_EQ(0, counter_);
+
+    // Cleans up the shared resource.
+    shared_resource_ = nullptr;
+  }
+
+  // This will be called before each test in this test case.
+  void SetUp() override {
+    // SetUpTestCase() should be called only once, so counter_ should
+    // always be 1.
+    EXPECT_EQ(1, counter_);
+  }
+
+  // Number of test cases that have been set up.
+  static int counter_;
+
+  // Some resource to be shared by all tests in this test case.
+  static const char* shared_resource_;
+};
+
+int SetUpTestCaseTest::counter_ = 0;
+const char* SetUpTestCaseTest::shared_resource_ = nullptr;
+
+// A test that uses the shared resource.
+TEST_F(SetUpTestCaseTest, Test1) { EXPECT_STRNE(nullptr, shared_resource_); }
+
+// Another test that uses the shared resource.
+TEST_F(SetUpTestCaseTest, Test2) {
+  EXPECT_STREQ("123", shared_resource_);
+}
+#endif  //  REMOVE_LEGACY_TEST_CASEAPI
+
+// Tests SetupTestSuite/TearDown TestSuite
+class SetUpTestSuiteTest : public Test {
+ protected:
+  // This will be called once before the first test in this test case
+  // is run.
+  static void SetUpTestSuite() {
+    printf("Setting up the test suite . . .\n");
+
+    // Initializes some shared resource.  In this simple example, we
+    // just create a C string.  More complex stuff can be done if
+    // desired.
+    shared_resource_ = "123";
+
+    // Increments the number of test cases that have been set up.
+    counter_++;
+
+    // SetUpTestSuite() should be called only once.
+    EXPECT_EQ(1, counter_);
+  }
+
+  // This will be called once after the last test in this test case is
+  // run.
+  static void TearDownTestSuite() {
+    printf("Tearing down the test suite . . .\n");
+
+    // Decrements the number of test suites that have been set up.
+    counter_--;
+
+    // TearDownTestSuite() should be called only once.
+    EXPECT_EQ(0, counter_);
+
+    // Cleans up the shared resource.
+    shared_resource_ = nullptr;
+  }
+
+  // This will be called before each test in this test case.
+  void SetUp() override {
+    // SetUpTestSuite() should be called only once, so counter_ should
+    // always be 1.
+    EXPECT_EQ(1, counter_);
+  }
+
+  // Number of test suites that have been set up.
+  static int counter_;
+
+  // Some resource to be shared by all tests in this test case.
+  static const char* shared_resource_;
+};
+
+int SetUpTestSuiteTest::counter_ = 0;
+const char* SetUpTestSuiteTest::shared_resource_ = nullptr;
+
+// A test that uses the shared resource.
+TEST_F(SetUpTestSuiteTest, TestSetupTestSuite1) {
+  EXPECT_STRNE(nullptr, shared_resource_);
+}
+
+// Another test that uses the shared resource.
+TEST_F(SetUpTestSuiteTest, TestSetupTestSuite2) {
+  EXPECT_STREQ("123", shared_resource_);
+}
+
+// The ParseFlagsTest test case tests ParseGoogleTestFlagsOnly.
+
+// The Flags struct stores a copy of all Google Test flags.
+struct Flags {
+  // Constructs a Flags struct where each flag has its default value.
+  Flags() : also_run_disabled_tests(false),
+            break_on_failure(false),
+            catch_exceptions(false),
+            death_test_use_fork(false),
+            filter(""),
+            list_tests(false),
+            output(""),
+            print_time(true),
+            random_seed(0),
+            repeat(1),
+            shuffle(false),
+            stack_trace_depth(kMaxStackTraceDepth),
+            stream_result_to(""),
+            throw_on_failure(false) {}
+
+  // Factory methods.
+
+  // Creates a Flags struct where the gtest_also_run_disabled_tests flag has
+  // the given value.
+  static Flags AlsoRunDisabledTests(bool also_run_disabled_tests) {
+    Flags flags;
+    flags.also_run_disabled_tests = also_run_disabled_tests;
+    return flags;
+  }
+
+  // Creates a Flags struct where the gtest_break_on_failure flag has
+  // the given value.
+  static Flags BreakOnFailure(bool break_on_failure) {
+    Flags flags;
+    flags.break_on_failure = break_on_failure;
+    return flags;
+  }
+
+  // Creates a Flags struct where the gtest_catch_exceptions flag has
+  // the given value.
+  static Flags CatchExceptions(bool catch_exceptions) {
+    Flags flags;
+    flags.catch_exceptions = catch_exceptions;
+    return flags;
+  }
+
+  // Creates a Flags struct where the gtest_death_test_use_fork flag has
+  // the given value.
+  static Flags DeathTestUseFork(bool death_test_use_fork) {
+    Flags flags;
+    flags.death_test_use_fork = death_test_use_fork;
+    return flags;
+  }
+
+  // Creates a Flags struct where the gtest_filter flag has the given
+  // value.
+  static Flags Filter(const char* filter) {
+    Flags flags;
+    flags.filter = filter;
+    return flags;
+  }
+
+  // Creates a Flags struct where the gtest_list_tests flag has the
+  // given value.
+  static Flags ListTests(bool list_tests) {
+    Flags flags;
+    flags.list_tests = list_tests;
+    return flags;
+  }
+
+  // Creates a Flags struct where the gtest_output flag has the given
+  // value.
+  static Flags Output(const char* output) {
+    Flags flags;
+    flags.output = output;
+    return flags;
+  }
+
+  // Creates a Flags struct where the gtest_print_time flag has the given
+  // value.
+  static Flags PrintTime(bool print_time) {
+    Flags flags;
+    flags.print_time = print_time;
+    return flags;
+  }
+
+  // Creates a Flags struct where the gtest_random_seed flag has the given
+  // value.
+  static Flags RandomSeed(Int32 random_seed) {
+    Flags flags;
+    flags.random_seed = random_seed;
+    return flags;
+  }
+
+  // Creates a Flags struct where the gtest_repeat flag has the given
+  // value.
+  static Flags Repeat(Int32 repeat) {
+    Flags flags;
+    flags.repeat = repeat;
+    return flags;
+  }
+
+  // Creates a Flags struct where the gtest_shuffle flag has the given
+  // value.
+  static Flags Shuffle(bool shuffle) {
+    Flags flags;
+    flags.shuffle = shuffle;
+    return flags;
+  }
+
+  // Creates a Flags struct where the GTEST_FLAG(stack_trace_depth) flag has
+  // the given value.
+  static Flags StackTraceDepth(Int32 stack_trace_depth) {
+    Flags flags;
+    flags.stack_trace_depth = stack_trace_depth;
+    return flags;
+  }
+
+  // Creates a Flags struct where the GTEST_FLAG(stream_result_to) flag has
+  // the given value.
+  static Flags StreamResultTo(const char* stream_result_to) {
+    Flags flags;
+    flags.stream_result_to = stream_result_to;
+    return flags;
+  }
+
+  // Creates a Flags struct where the gtest_throw_on_failure flag has
+  // the given value.
+  static Flags ThrowOnFailure(bool throw_on_failure) {
+    Flags flags;
+    flags.throw_on_failure = throw_on_failure;
+    return flags;
+  }
+
+  // These fields store the flag values.
+  bool also_run_disabled_tests;
+  bool break_on_failure;
+  bool catch_exceptions;
+  bool death_test_use_fork;
+  const char* filter;
+  bool list_tests;
+  const char* output;
+  bool print_time;
+  Int32 random_seed;
+  Int32 repeat;
+  bool shuffle;
+  Int32 stack_trace_depth;
+  const char* stream_result_to;
+  bool throw_on_failure;
+};
+
+// Fixture for testing ParseGoogleTestFlagsOnly().
+class ParseFlagsTest : public Test {
+ protected:
+  // Clears the flags before each test.
+  void SetUp() override {
+    GTEST_FLAG(also_run_disabled_tests) = false;
+    GTEST_FLAG(break_on_failure) = false;
+    GTEST_FLAG(catch_exceptions) = false;
+    GTEST_FLAG(death_test_use_fork) = false;
+    GTEST_FLAG(filter) = "";
+    GTEST_FLAG(list_tests) = false;
+    GTEST_FLAG(output) = "";
+    GTEST_FLAG(print_time) = true;
+    GTEST_FLAG(random_seed) = 0;
+    GTEST_FLAG(repeat) = 1;
+    GTEST_FLAG(shuffle) = false;
+    GTEST_FLAG(stack_trace_depth) = kMaxStackTraceDepth;
+    GTEST_FLAG(stream_result_to) = "";
+    GTEST_FLAG(throw_on_failure) = false;
+  }
+
+  // Asserts that two narrow or wide string arrays are equal.
+  template <typename CharType>
+  static void AssertStringArrayEq(int size1, CharType** array1, int size2,
+                                  CharType** array2) {
+    ASSERT_EQ(size1, size2) << " Array sizes different.";
+
+    for (int i = 0; i != size1; i++) {
+      ASSERT_STREQ(array1[i], array2[i]) << " where i == " << i;
+    }
+  }
+
+  // Verifies that the flag values match the expected values.
+  static void CheckFlags(const Flags& expected) {
+    EXPECT_EQ(expected.also_run_disabled_tests,
+              GTEST_FLAG(also_run_disabled_tests));
+    EXPECT_EQ(expected.break_on_failure, GTEST_FLAG(break_on_failure));
+    EXPECT_EQ(expected.catch_exceptions, GTEST_FLAG(catch_exceptions));
+    EXPECT_EQ(expected.death_test_use_fork, GTEST_FLAG(death_test_use_fork));
+    EXPECT_STREQ(expected.filter, GTEST_FLAG(filter).c_str());
+    EXPECT_EQ(expected.list_tests, GTEST_FLAG(list_tests));
+    EXPECT_STREQ(expected.output, GTEST_FLAG(output).c_str());
+    EXPECT_EQ(expected.print_time, GTEST_FLAG(print_time));
+    EXPECT_EQ(expected.random_seed, GTEST_FLAG(random_seed));
+    EXPECT_EQ(expected.repeat, GTEST_FLAG(repeat));
+    EXPECT_EQ(expected.shuffle, GTEST_FLAG(shuffle));
+    EXPECT_EQ(expected.stack_trace_depth, GTEST_FLAG(stack_trace_depth));
+    EXPECT_STREQ(expected.stream_result_to,
+                 GTEST_FLAG(stream_result_to).c_str());
+    EXPECT_EQ(expected.throw_on_failure, GTEST_FLAG(throw_on_failure));
+  }
+
+  // Parses a command line (specified by argc1 and argv1), then
+  // verifies that the flag values are expected and that the
+  // recognized flags are removed from the command line.
+  template <typename CharType>
+  static void TestParsingFlags(int argc1, const CharType** argv1,
+                               int argc2, const CharType** argv2,
+                               const Flags& expected, bool should_print_help) {
+    const bool saved_help_flag = ::testing::internal::g_help_flag;
+    ::testing::internal::g_help_flag = false;
+
+# if GTEST_HAS_STREAM_REDIRECTION
+    CaptureStdout();
+# endif
+
+    // Parses the command line.
+    internal::ParseGoogleTestFlagsOnly(&argc1, const_cast<CharType**>(argv1));
+
+# if GTEST_HAS_STREAM_REDIRECTION
+    const std::string captured_stdout = GetCapturedStdout();
+# endif
+
+    // Verifies the flag values.
+    CheckFlags(expected);
+
+    // Verifies that the recognized flags are removed from the command
+    // line.
+    AssertStringArrayEq(argc1 + 1, argv1, argc2 + 1, argv2);
+
+    // ParseGoogleTestFlagsOnly should neither set g_help_flag nor print the
+    // help message for the flags it recognizes.
+    EXPECT_EQ(should_print_help, ::testing::internal::g_help_flag);
+
+# if GTEST_HAS_STREAM_REDIRECTION
+    const char* const expected_help_fragment =
+        "This program contains tests written using";
+    if (should_print_help) {
+      EXPECT_PRED_FORMAT2(IsSubstring, expected_help_fragment, captured_stdout);
+    } else {
+      EXPECT_PRED_FORMAT2(IsNotSubstring,
+                          expected_help_fragment, captured_stdout);
+    }
+# endif  // GTEST_HAS_STREAM_REDIRECTION
+
+    ::testing::internal::g_help_flag = saved_help_flag;
+  }
+
+  // This macro wraps TestParsingFlags s.t. the user doesn't need
+  // to specify the array sizes.
+
+# define GTEST_TEST_PARSING_FLAGS_(argv1, argv2, expected, should_print_help) \
+  TestParsingFlags(sizeof(argv1)/sizeof(*argv1) - 1, argv1, \
+                   sizeof(argv2)/sizeof(*argv2) - 1, argv2, \
+                   expected, should_print_help)
+};
+
+// Tests parsing an empty command line.
+TEST_F(ParseFlagsTest, Empty) {
+  const char* argv[] = {nullptr};
+
+  const char* argv2[] = {nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags(), false);
+}
+
+// Tests parsing a command line that has no flag.
+TEST_F(ParseFlagsTest, NoFlag) {
+  const char* argv[] = {"foo.exe", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags(), false);
+}
+
+// Tests parsing a bad --gtest_filter flag.
+TEST_F(ParseFlagsTest, FilterBad) {
+  const char* argv[] = {"foo.exe", "--gtest_filter", nullptr};
+
+  const char* argv2[] = {"foo.exe", "--gtest_filter", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter(""), true);
+}
+
+// Tests parsing an empty --gtest_filter flag.
+TEST_F(ParseFlagsTest, FilterEmpty) {
+  const char* argv[] = {"foo.exe", "--gtest_filter=", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter(""), false);
+}
+
+// Tests parsing a non-empty --gtest_filter flag.
+TEST_F(ParseFlagsTest, FilterNonEmpty) {
+  const char* argv[] = {"foo.exe", "--gtest_filter=abc", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter("abc"), false);
+}
+
+// Tests parsing --gtest_break_on_failure.
+TEST_F(ParseFlagsTest, BreakOnFailureWithoutValue) {
+  const char* argv[] = {"foo.exe", "--gtest_break_on_failure", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(true), false);
+}
+
+// Tests parsing --gtest_break_on_failure=0.
+TEST_F(ParseFlagsTest, BreakOnFailureFalse_0) {
+  const char* argv[] = {"foo.exe", "--gtest_break_on_failure=0", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(false), false);
+}
+
+// Tests parsing --gtest_break_on_failure=f.
+TEST_F(ParseFlagsTest, BreakOnFailureFalse_f) {
+  const char* argv[] = {"foo.exe", "--gtest_break_on_failure=f", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(false), false);
+}
+
+// Tests parsing --gtest_break_on_failure=F.
+TEST_F(ParseFlagsTest, BreakOnFailureFalse_F) {
+  const char* argv[] = {"foo.exe", "--gtest_break_on_failure=F", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(false), false);
+}
+
+// Tests parsing a --gtest_break_on_failure flag that has a "true"
+// definition.
+TEST_F(ParseFlagsTest, BreakOnFailureTrue) {
+  const char* argv[] = {"foo.exe", "--gtest_break_on_failure=1", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::BreakOnFailure(true), false);
+}
+
+// Tests parsing --gtest_catch_exceptions.
+TEST_F(ParseFlagsTest, CatchExceptions) {
+  const char* argv[] = {"foo.exe", "--gtest_catch_exceptions", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::CatchExceptions(true), false);
+}
+
+// Tests parsing --gtest_death_test_use_fork.
+TEST_F(ParseFlagsTest, DeathTestUseFork) {
+  const char* argv[] = {"foo.exe", "--gtest_death_test_use_fork", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::DeathTestUseFork(true), false);
+}
+
+// Tests having the same flag twice with different values.  The
+// expected behavior is that the one coming last takes precedence.
+TEST_F(ParseFlagsTest, DuplicatedFlags) {
+  const char* argv[] = {"foo.exe", "--gtest_filter=a", "--gtest_filter=b",
+                        nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter("b"), false);
+}
+
+// Tests having an unrecognized flag on the command line.
+TEST_F(ParseFlagsTest, UnrecognizedFlag) {
+  const char* argv[] = {"foo.exe", "--gtest_break_on_failure",
+                        "bar",  // Unrecognized by Google Test.
+                        "--gtest_filter=b", nullptr};
+
+  const char* argv2[] = {"foo.exe", "bar", nullptr};
+
+  Flags flags;
+  flags.break_on_failure = true;
+  flags.filter = "b";
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, flags, false);
+}
+
+// Tests having a --gtest_list_tests flag
+TEST_F(ParseFlagsTest, ListTestsFlag) {
+  const char* argv[] = {"foo.exe", "--gtest_list_tests", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(true), false);
+}
+
+// Tests having a --gtest_list_tests flag with a "true" value
+TEST_F(ParseFlagsTest, ListTestsTrue) {
+  const char* argv[] = {"foo.exe", "--gtest_list_tests=1", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(true), false);
+}
+
+// Tests having a --gtest_list_tests flag with a "false" value
+TEST_F(ParseFlagsTest, ListTestsFalse) {
+  const char* argv[] = {"foo.exe", "--gtest_list_tests=0", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(false), false);
+}
+
+// Tests parsing --gtest_list_tests=f.
+TEST_F(ParseFlagsTest, ListTestsFalse_f) {
+  const char* argv[] = {"foo.exe", "--gtest_list_tests=f", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(false), false);
+}
+
+// Tests parsing --gtest_list_tests=F.
+TEST_F(ParseFlagsTest, ListTestsFalse_F) {
+  const char* argv[] = {"foo.exe", "--gtest_list_tests=F", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(false), false);
+}
+
+// Tests parsing --gtest_output (invalid).
+TEST_F(ParseFlagsTest, OutputEmpty) {
+  const char* argv[] = {"foo.exe", "--gtest_output", nullptr};
+
+  const char* argv2[] = {"foo.exe", "--gtest_output", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags(), true);
+}
+
+// Tests parsing --gtest_output=xml
+TEST_F(ParseFlagsTest, OutputXml) {
+  const char* argv[] = {"foo.exe", "--gtest_output=xml", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Output("xml"), false);
+}
+
+// Tests parsing --gtest_output=xml:file
+TEST_F(ParseFlagsTest, OutputXmlFile) {
+  const char* argv[] = {"foo.exe", "--gtest_output=xml:file", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Output("xml:file"), false);
+}
+
+// Tests parsing --gtest_output=xml:directory/path/
+TEST_F(ParseFlagsTest, OutputXmlDirectory) {
+  const char* argv[] = {"foo.exe", "--gtest_output=xml:directory/path/",
+                        nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2,
+                            Flags::Output("xml:directory/path/"), false);
+}
+
+// Tests having a --gtest_print_time flag
+TEST_F(ParseFlagsTest, PrintTimeFlag) {
+  const char* argv[] = {"foo.exe", "--gtest_print_time", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(true), false);
+}
+
+// Tests having a --gtest_print_time flag with a "true" value
+TEST_F(ParseFlagsTest, PrintTimeTrue) {
+  const char* argv[] = {"foo.exe", "--gtest_print_time=1", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(true), false);
+}
+
+// Tests having a --gtest_print_time flag with a "false" value
+TEST_F(ParseFlagsTest, PrintTimeFalse) {
+  const char* argv[] = {"foo.exe", "--gtest_print_time=0", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(false), false);
+}
+
+// Tests parsing --gtest_print_time=f.
+TEST_F(ParseFlagsTest, PrintTimeFalse_f) {
+  const char* argv[] = {"foo.exe", "--gtest_print_time=f", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(false), false);
+}
+
+// Tests parsing --gtest_print_time=F.
+TEST_F(ParseFlagsTest, PrintTimeFalse_F) {
+  const char* argv[] = {"foo.exe", "--gtest_print_time=F", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(false), false);
+}
+
+// Tests parsing --gtest_random_seed=number
+TEST_F(ParseFlagsTest, RandomSeed) {
+  const char* argv[] = {"foo.exe", "--gtest_random_seed=1000", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::RandomSeed(1000), false);
+}
+
+// Tests parsing --gtest_repeat=number
+TEST_F(ParseFlagsTest, Repeat) {
+  const char* argv[] = {"foo.exe", "--gtest_repeat=1000", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Repeat(1000), false);
+}
+
+// Tests having a --gtest_also_run_disabled_tests flag
+TEST_F(ParseFlagsTest, AlsoRunDisabledTestsFlag) {
+  const char* argv[] = {"foo.exe", "--gtest_also_run_disabled_tests", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::AlsoRunDisabledTests(true),
+                            false);
+}
+
+// Tests having a --gtest_also_run_disabled_tests flag with a "true" value
+TEST_F(ParseFlagsTest, AlsoRunDisabledTestsTrue) {
+  const char* argv[] = {"foo.exe", "--gtest_also_run_disabled_tests=1",
+                        nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::AlsoRunDisabledTests(true),
+                            false);
+}
+
+// Tests having a --gtest_also_run_disabled_tests flag with a "false" value
+TEST_F(ParseFlagsTest, AlsoRunDisabledTestsFalse) {
+  const char* argv[] = {"foo.exe", "--gtest_also_run_disabled_tests=0",
+                        nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::AlsoRunDisabledTests(false),
+                            false);
+}
+
+// Tests parsing --gtest_shuffle.
+TEST_F(ParseFlagsTest, ShuffleWithoutValue) {
+  const char* argv[] = {"foo.exe", "--gtest_shuffle", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Shuffle(true), false);
+}
+
+// Tests parsing --gtest_shuffle=0.
+TEST_F(ParseFlagsTest, ShuffleFalse_0) {
+  const char* argv[] = {"foo.exe", "--gtest_shuffle=0", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Shuffle(false), false);
+}
+
+// Tests parsing a --gtest_shuffle flag that has a "true" definition.
+TEST_F(ParseFlagsTest, ShuffleTrue) {
+  const char* argv[] = {"foo.exe", "--gtest_shuffle=1", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Shuffle(true), false);
+}
+
+// Tests parsing --gtest_stack_trace_depth=number.
+TEST_F(ParseFlagsTest, StackTraceDepth) {
+  const char* argv[] = {"foo.exe", "--gtest_stack_trace_depth=5", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::StackTraceDepth(5), false);
+}
+
+TEST_F(ParseFlagsTest, StreamResultTo) {
+  const char* argv[] = {"foo.exe", "--gtest_stream_result_to=localhost:1234",
+                        nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(
+      argv, argv2, Flags::StreamResultTo("localhost:1234"), false);
+}
+
+// Tests parsing --gtest_throw_on_failure.
+TEST_F(ParseFlagsTest, ThrowOnFailureWithoutValue) {
+  const char* argv[] = {"foo.exe", "--gtest_throw_on_failure", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ThrowOnFailure(true), false);
+}
+
+// Tests parsing --gtest_throw_on_failure=0.
+TEST_F(ParseFlagsTest, ThrowOnFailureFalse_0) {
+  const char* argv[] = {"foo.exe", "--gtest_throw_on_failure=0", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ThrowOnFailure(false), false);
+}
+
+// Tests parsing a --gtest_throw_on_failure flag that has a "true"
+// definition.
+TEST_F(ParseFlagsTest, ThrowOnFailureTrue) {
+  const char* argv[] = {"foo.exe", "--gtest_throw_on_failure=1", nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ThrowOnFailure(true), false);
+}
+
+# if GTEST_OS_WINDOWS
+// Tests parsing wide strings.
+TEST_F(ParseFlagsTest, WideStrings) {
+  const wchar_t* argv[] = {
+    L"foo.exe",
+    L"--gtest_filter=Foo*",
+    L"--gtest_list_tests=1",
+    L"--gtest_break_on_failure",
+    L"--non_gtest_flag",
+    NULL
+  };
+
+  const wchar_t* argv2[] = {
+    L"foo.exe",
+    L"--non_gtest_flag",
+    NULL
+  };
+
+  Flags expected_flags;
+  expected_flags.break_on_failure = true;
+  expected_flags.filter = "Foo*";
+  expected_flags.list_tests = true;
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, expected_flags, false);
+}
+# endif  // GTEST_OS_WINDOWS
+
+#if GTEST_USE_OWN_FLAGFILE_FLAG_
+class FlagfileTest : public ParseFlagsTest {
+ public:
+  virtual void SetUp() {
+    ParseFlagsTest::SetUp();
+
+    testdata_path_.Set(internal::FilePath(
+        testing::TempDir() + internal::GetCurrentExecutableName().string() +
+        "_flagfile_test"));
+    testing::internal::posix::RmDir(testdata_path_.c_str());
+    EXPECT_TRUE(testdata_path_.CreateFolder());
+  }
+
+  virtual void TearDown() {
+    testing::internal::posix::RmDir(testdata_path_.c_str());
+    ParseFlagsTest::TearDown();
+  }
+
+  internal::FilePath CreateFlagfile(const char* contents) {
+    internal::FilePath file_path(internal::FilePath::GenerateUniqueFileName(
+        testdata_path_, internal::FilePath("unique"), "txt"));
+    FILE* f = testing::internal::posix::FOpen(file_path.c_str(), "w");
+    fprintf(f, "%s", contents);
+    fclose(f);
+    return file_path;
+  }
+
+ private:
+  internal::FilePath testdata_path_;
+};
+
+// Tests an empty flagfile.
+TEST_F(FlagfileTest, Empty) {
+  internal::FilePath flagfile_path(CreateFlagfile(""));
+  std::string flagfile_flag =
+      std::string("--" GTEST_FLAG_PREFIX_ "flagfile=") + flagfile_path.c_str();
+
+  const char* argv[] = {"foo.exe", flagfile_flag.c_str(), nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags(), false);
+}
+
+// Tests passing a non-empty --gtest_filter flag via --gtest_flagfile.
+TEST_F(FlagfileTest, FilterNonEmpty) {
+  internal::FilePath flagfile_path(CreateFlagfile(
+      "--"  GTEST_FLAG_PREFIX_  "filter=abc"));
+  std::string flagfile_flag =
+      std::string("--" GTEST_FLAG_PREFIX_ "flagfile=") + flagfile_path.c_str();
+
+  const char* argv[] = {"foo.exe", flagfile_flag.c_str(), nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Filter("abc"), false);
+}
+
+// Tests passing several flags via --gtest_flagfile.
+TEST_F(FlagfileTest, SeveralFlags) {
+  internal::FilePath flagfile_path(CreateFlagfile(
+      "--"  GTEST_FLAG_PREFIX_  "filter=abc\n"
+      "--"  GTEST_FLAG_PREFIX_  "break_on_failure\n"
+      "--"  GTEST_FLAG_PREFIX_  "list_tests"));
+  std::string flagfile_flag =
+      std::string("--" GTEST_FLAG_PREFIX_ "flagfile=") + flagfile_path.c_str();
+
+  const char* argv[] = {"foo.exe", flagfile_flag.c_str(), nullptr};
+
+  const char* argv2[] = {"foo.exe", nullptr};
+
+  Flags expected_flags;
+  expected_flags.break_on_failure = true;
+  expected_flags.filter = "abc";
+  expected_flags.list_tests = true;
+
+  GTEST_TEST_PARSING_FLAGS_(argv, argv2, expected_flags, false);
+}
+#endif  // GTEST_USE_OWN_FLAGFILE_FLAG_
+
+// Tests current_test_info() in UnitTest.
+class CurrentTestInfoTest : public Test {
+ protected:
+  // Tests that current_test_info() returns NULL before the first test in
+  // the test case is run.
+  static void SetUpTestSuite() {
+    // There should be no tests running at this point.
+    const TestInfo* test_info =
+      UnitTest::GetInstance()->current_test_info();
+    EXPECT_TRUE(test_info == nullptr)
+        << "There should be no tests running at this point.";
+  }
+
+  // Tests that current_test_info() returns NULL after the last test in
+  // the test case has run.
+  static void TearDownTestSuite() {
+    const TestInfo* test_info =
+      UnitTest::GetInstance()->current_test_info();
+    EXPECT_TRUE(test_info == nullptr)
+        << "There should be no tests running at this point.";
+  }
+};
+
+// Tests that current_test_info() returns TestInfo for currently running
+// test by checking the expected test name against the actual one.
+TEST_F(CurrentTestInfoTest, WorksForFirstTestInATestSuite) {
+  const TestInfo* test_info =
+    UnitTest::GetInstance()->current_test_info();
+  ASSERT_TRUE(nullptr != test_info)
+      << "There is a test running so we should have a valid TestInfo.";
+  EXPECT_STREQ("CurrentTestInfoTest", test_info->test_case_name())
+      << "Expected the name of the currently running test case.";
+  EXPECT_STREQ("WorksForFirstTestInATestSuite", test_info->name())
+      << "Expected the name of the currently running test.";
+}
+
+// Tests that current_test_info() returns TestInfo for currently running
+// test by checking the expected test name against the actual one.  We
+// use this test to see that the TestInfo object actually changed from
+// the previous invocation.
+TEST_F(CurrentTestInfoTest, WorksForSecondTestInATestSuite) {
+  const TestInfo* test_info =
+    UnitTest::GetInstance()->current_test_info();
+  ASSERT_TRUE(nullptr != test_info)
+      << "There is a test running so we should have a valid TestInfo.";
+  EXPECT_STREQ("CurrentTestInfoTest", test_info->test_case_name())
+      << "Expected the name of the currently running test case.";
+  EXPECT_STREQ("WorksForSecondTestInATestSuite", test_info->name())
+      << "Expected the name of the currently running test.";
+}
+
+}  // namespace testing
+
+
+// These two lines test that we can define tests in a namespace that
+// has the name "testing" and is nested in another namespace.
+namespace my_namespace {
+namespace testing {
+
+// Makes sure that TEST knows to use ::testing::Test instead of
+// ::my_namespace::testing::Test.
+class Test {};
+
+// Makes sure that an assertion knows to use ::testing::Message instead of
+// ::my_namespace::testing::Message.
+class Message {};
+
+// Makes sure that an assertion knows to use
+// ::testing::AssertionResult instead of
+// ::my_namespace::testing::AssertionResult.
+class AssertionResult {};
+
+// Tests that an assertion that should succeed works as expected.
+TEST(NestedTestingNamespaceTest, Success) {
+  EXPECT_EQ(1, 1) << "This shouldn't fail.";
+}
+
+// Tests that an assertion that should fail works as expected.
+TEST(NestedTestingNamespaceTest, Failure) {
+  EXPECT_FATAL_FAILURE(FAIL() << "This failure is expected.",
+                       "This failure is expected.");
+}
+
+}  // namespace testing
+}  // namespace my_namespace
+
+// Tests that one can call superclass SetUp and TearDown methods--
+// that is, that they are not private.
+// No tests are based on this fixture; the test "passes" if it compiles
+// successfully.
+class ProtectedFixtureMethodsTest : public Test {
+ protected:
+  void SetUp() override { Test::SetUp(); }
+  void TearDown() override { Test::TearDown(); }
+};
+
+// StreamingAssertionsTest tests the streaming versions of a representative
+// sample of assertions.
+TEST(StreamingAssertionsTest, Unconditional) {
+  SUCCEED() << "expected success";
+  EXPECT_NONFATAL_FAILURE(ADD_FAILURE() << "expected failure",
+                          "expected failure");
+  EXPECT_FATAL_FAILURE(FAIL() << "expected failure",
+                       "expected failure");
+}
+
+#ifdef __BORLANDC__
+// Silences warnings: "Condition is always true", "Unreachable code"
+# pragma option push -w-ccc -w-rch
+#endif
+
+TEST(StreamingAssertionsTest, Truth) {
+  EXPECT_TRUE(true) << "unexpected failure";
+  ASSERT_TRUE(true) << "unexpected failure";
+  EXPECT_NONFATAL_FAILURE(EXPECT_TRUE(false) << "expected failure",
+                          "expected failure");
+  EXPECT_FATAL_FAILURE(ASSERT_TRUE(false) << "expected failure",
+                       "expected failure");
+}
+
+TEST(StreamingAssertionsTest, Truth2) {
+  EXPECT_FALSE(false) << "unexpected failure";
+  ASSERT_FALSE(false) << "unexpected failure";
+  EXPECT_NONFATAL_FAILURE(EXPECT_FALSE(true) << "expected failure",
+                          "expected failure");
+  EXPECT_FATAL_FAILURE(ASSERT_FALSE(true) << "expected failure",
+                       "expected failure");
+}
+
+#ifdef __BORLANDC__
+// Restores warnings after previous "#pragma option push" suppressed them
+# pragma option pop
+#endif
+
+TEST(StreamingAssertionsTest, IntegerEquals) {
+  EXPECT_EQ(1, 1) << "unexpected failure";
+  ASSERT_EQ(1, 1) << "unexpected failure";
+  EXPECT_NONFATAL_FAILURE(EXPECT_EQ(1, 2) << "expected failure",
+                          "expected failure");
+  EXPECT_FATAL_FAILURE(ASSERT_EQ(1, 2) << "expected failure",
+                       "expected failure");
+}
+
+TEST(StreamingAssertionsTest, IntegerLessThan) {
+  EXPECT_LT(1, 2) << "unexpected failure";
+  ASSERT_LT(1, 2) << "unexpected failure";
+  EXPECT_NONFATAL_FAILURE(EXPECT_LT(2, 1) << "expected failure",
+                          "expected failure");
+  EXPECT_FATAL_FAILURE(ASSERT_LT(2, 1) << "expected failure",
+                       "expected failure");
+}
+
+TEST(StreamingAssertionsTest, StringsEqual) {
+  EXPECT_STREQ("foo", "foo") << "unexpected failure";
+  ASSERT_STREQ("foo", "foo") << "unexpected failure";
+  EXPECT_NONFATAL_FAILURE(EXPECT_STREQ("foo", "bar") << "expected failure",
+                          "expected failure");
+  EXPECT_FATAL_FAILURE(ASSERT_STREQ("foo", "bar") << "expected failure",
+                       "expected failure");
+}
+
+TEST(StreamingAssertionsTest, StringsNotEqual) {
+  EXPECT_STRNE("foo", "bar") << "unexpected failure";
+  ASSERT_STRNE("foo", "bar") << "unexpected failure";
+  EXPECT_NONFATAL_FAILURE(EXPECT_STRNE("foo", "foo") << "expected failure",
+                          "expected failure");
+  EXPECT_FATAL_FAILURE(ASSERT_STRNE("foo", "foo") << "expected failure",
+                       "expected failure");
+}
+
+TEST(StreamingAssertionsTest, StringsEqualIgnoringCase) {
+  EXPECT_STRCASEEQ("foo", "FOO") << "unexpected failure";
+  ASSERT_STRCASEEQ("foo", "FOO") << "unexpected failure";
+  EXPECT_NONFATAL_FAILURE(EXPECT_STRCASEEQ("foo", "bar") << "expected failure",
+                          "expected failure");
+  EXPECT_FATAL_FAILURE(ASSERT_STRCASEEQ("foo", "bar") << "expected failure",
+                       "expected failure");
+}
+
+TEST(StreamingAssertionsTest, StringNotEqualIgnoringCase) {
+  EXPECT_STRCASENE("foo", "bar") << "unexpected failure";
+  ASSERT_STRCASENE("foo", "bar") << "unexpected failure";
+  EXPECT_NONFATAL_FAILURE(EXPECT_STRCASENE("foo", "FOO") << "expected failure",
+                          "expected failure");
+  EXPECT_FATAL_FAILURE(ASSERT_STRCASENE("bar", "BAR") << "expected failure",
+                       "expected failure");
+}
+
+TEST(StreamingAssertionsTest, FloatingPointEquals) {
+  EXPECT_FLOAT_EQ(1.0, 1.0) << "unexpected failure";
+  ASSERT_FLOAT_EQ(1.0, 1.0) << "unexpected failure";
+  EXPECT_NONFATAL_FAILURE(EXPECT_FLOAT_EQ(0.0, 1.0) << "expected failure",
+                          "expected failure");
+  EXPECT_FATAL_FAILURE(ASSERT_FLOAT_EQ(0.0, 1.0) << "expected failure",
+                       "expected failure");
+}
+
+#if GTEST_HAS_EXCEPTIONS
+
+TEST(StreamingAssertionsTest, Throw) {
+  EXPECT_THROW(ThrowAnInteger(), int) << "unexpected failure";
+  ASSERT_THROW(ThrowAnInteger(), int) << "unexpected failure";
+  EXPECT_NONFATAL_FAILURE(EXPECT_THROW(ThrowAnInteger(), bool) <<
+                          "expected failure", "expected failure");
+  EXPECT_FATAL_FAILURE(ASSERT_THROW(ThrowAnInteger(), bool) <<
+                       "expected failure", "expected failure");
+}
+
+TEST(StreamingAssertionsTest, NoThrow) {
+  EXPECT_NO_THROW(ThrowNothing()) << "unexpected failure";
+  ASSERT_NO_THROW(ThrowNothing()) << "unexpected failure";
+  EXPECT_NONFATAL_FAILURE(EXPECT_NO_THROW(ThrowAnInteger()) <<
+                          "expected failure", "expected failure");
+  EXPECT_FATAL_FAILURE(ASSERT_NO_THROW(ThrowAnInteger()) <<
+                       "expected failure", "expected failure");
+}
+
+TEST(StreamingAssertionsTest, AnyThrow) {
+  EXPECT_ANY_THROW(ThrowAnInteger()) << "unexpected failure";
+  ASSERT_ANY_THROW(ThrowAnInteger()) << "unexpected failure";
+  EXPECT_NONFATAL_FAILURE(EXPECT_ANY_THROW(ThrowNothing()) <<
+                          "expected failure", "expected failure");
+  EXPECT_FATAL_FAILURE(ASSERT_ANY_THROW(ThrowNothing()) <<
+                       "expected failure", "expected failure");
+}
+
+#endif  // GTEST_HAS_EXCEPTIONS
+
+// Tests that Google Test correctly decides whether to use colors in the output.
+
+TEST(ColoredOutputTest, UsesColorsWhenGTestColorFlagIsYes) {
+  GTEST_FLAG(color) = "yes";
+
+  SetEnv("TERM", "xterm");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+  EXPECT_TRUE(ShouldUseColor(false));  // Stdout is not a TTY.
+
+  SetEnv("TERM", "dumb");  // TERM doesn't support colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+  EXPECT_TRUE(ShouldUseColor(false));  // Stdout is not a TTY.
+}
+
+TEST(ColoredOutputTest, UsesColorsWhenGTestColorFlagIsAliasOfYes) {
+  SetEnv("TERM", "dumb");  // TERM doesn't support colors.
+
+  GTEST_FLAG(color) = "True";
+  EXPECT_TRUE(ShouldUseColor(false));  // Stdout is not a TTY.
+
+  GTEST_FLAG(color) = "t";
+  EXPECT_TRUE(ShouldUseColor(false));  // Stdout is not a TTY.
+
+  GTEST_FLAG(color) = "1";
+  EXPECT_TRUE(ShouldUseColor(false));  // Stdout is not a TTY.
+}
+
+TEST(ColoredOutputTest, UsesNoColorWhenGTestColorFlagIsNo) {
+  GTEST_FLAG(color) = "no";
+
+  SetEnv("TERM", "xterm");  // TERM supports colors.
+  EXPECT_FALSE(ShouldUseColor(true));  // Stdout is a TTY.
+  EXPECT_FALSE(ShouldUseColor(false));  // Stdout is not a TTY.
+
+  SetEnv("TERM", "dumb");  // TERM doesn't support colors.
+  EXPECT_FALSE(ShouldUseColor(true));  // Stdout is a TTY.
+  EXPECT_FALSE(ShouldUseColor(false));  // Stdout is not a TTY.
+}
+
+TEST(ColoredOutputTest, UsesNoColorWhenGTestColorFlagIsInvalid) {
+  SetEnv("TERM", "xterm");  // TERM supports colors.
+
+  GTEST_FLAG(color) = "F";
+  EXPECT_FALSE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  GTEST_FLAG(color) = "0";
+  EXPECT_FALSE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  GTEST_FLAG(color) = "unknown";
+  EXPECT_FALSE(ShouldUseColor(true));  // Stdout is a TTY.
+}
+
+TEST(ColoredOutputTest, UsesColorsWhenStdoutIsTty) {
+  GTEST_FLAG(color) = "auto";
+
+  SetEnv("TERM", "xterm");  // TERM supports colors.
+  EXPECT_FALSE(ShouldUseColor(false));  // Stdout is not a TTY.
+  EXPECT_TRUE(ShouldUseColor(true));    // Stdout is a TTY.
+}
+
+TEST(ColoredOutputTest, UsesColorsWhenTermSupportsColors) {
+  GTEST_FLAG(color) = "auto";
+
+#if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MINGW
+  // On Windows, we ignore the TERM variable as it's usually not set.
+
+  SetEnv("TERM", "dumb");
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "");
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "xterm");
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+#else
+  // On non-Windows platforms, we rely on TERM to determine if the
+  // terminal supports colors.
+
+  SetEnv("TERM", "dumb");  // TERM doesn't support colors.
+  EXPECT_FALSE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "emacs");  // TERM doesn't support colors.
+  EXPECT_FALSE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "vt100");  // TERM doesn't support colors.
+  EXPECT_FALSE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "xterm-mono");  // TERM doesn't support colors.
+  EXPECT_FALSE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "xterm");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "xterm-color");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "xterm-256color");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "screen");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "screen-256color");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "tmux");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "tmux-256color");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "rxvt-unicode");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "rxvt-unicode-256color");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "linux");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+
+  SetEnv("TERM", "cygwin");  // TERM supports colors.
+  EXPECT_TRUE(ShouldUseColor(true));  // Stdout is a TTY.
+#endif  // GTEST_OS_WINDOWS
+}
+
+// Verifies that StaticAssertTypeEq works in a namespace scope.
+
+static bool dummy1 GTEST_ATTRIBUTE_UNUSED_ = StaticAssertTypeEq<bool, bool>();
+static bool dummy2 GTEST_ATTRIBUTE_UNUSED_ =
+    StaticAssertTypeEq<const int, const int>();
+
+// Verifies that StaticAssertTypeEq works in a class.
+
+template <typename T>
+class StaticAssertTypeEqTestHelper {
+ public:
+  StaticAssertTypeEqTestHelper() { StaticAssertTypeEq<bool, T>(); }
+};
+
+TEST(StaticAssertTypeEqTest, WorksInClass) {
+  StaticAssertTypeEqTestHelper<bool>();
+}
+
+// Verifies that StaticAssertTypeEq works inside a function.
+
+typedef int IntAlias;
+
+TEST(StaticAssertTypeEqTest, CompilesForEqualTypes) {
+  StaticAssertTypeEq<int, IntAlias>();
+  StaticAssertTypeEq<int*, IntAlias*>();
+}
+
+TEST(HasNonfatalFailureTest, ReturnsFalseWhenThereIsNoFailure) {
+  EXPECT_FALSE(HasNonfatalFailure());
+}
+
+static void FailFatally() { FAIL(); }
+
+TEST(HasNonfatalFailureTest, ReturnsFalseWhenThereIsOnlyFatalFailure) {
+  FailFatally();
+  const bool has_nonfatal_failure = HasNonfatalFailure();
+  ClearCurrentTestPartResults();
+  EXPECT_FALSE(has_nonfatal_failure);
+}
+
+TEST(HasNonfatalFailureTest, ReturnsTrueWhenThereIsNonfatalFailure) {
+  ADD_FAILURE();
+  const bool has_nonfatal_failure = HasNonfatalFailure();
+  ClearCurrentTestPartResults();
+  EXPECT_TRUE(has_nonfatal_failure);
+}
+
+TEST(HasNonfatalFailureTest, ReturnsTrueWhenThereAreFatalAndNonfatalFailures) {
+  FailFatally();
+  ADD_FAILURE();
+  const bool has_nonfatal_failure = HasNonfatalFailure();
+  ClearCurrentTestPartResults();
+  EXPECT_TRUE(has_nonfatal_failure);
+}
+
+// A wrapper for calling HasNonfatalFailure outside of a test body.
+static bool HasNonfatalFailureHelper() {
+  return testing::Test::HasNonfatalFailure();
+}
+
+TEST(HasNonfatalFailureTest, WorksOutsideOfTestBody) {
+  EXPECT_FALSE(HasNonfatalFailureHelper());
+}
+
+TEST(HasNonfatalFailureTest, WorksOutsideOfTestBody2) {
+  ADD_FAILURE();
+  const bool has_nonfatal_failure = HasNonfatalFailureHelper();
+  ClearCurrentTestPartResults();
+  EXPECT_TRUE(has_nonfatal_failure);
+}
+
+TEST(HasFailureTest, ReturnsFalseWhenThereIsNoFailure) {
+  EXPECT_FALSE(HasFailure());
+}
+
+TEST(HasFailureTest, ReturnsTrueWhenThereIsFatalFailure) {
+  FailFatally();
+  const bool has_failure = HasFailure();
+  ClearCurrentTestPartResults();
+  EXPECT_TRUE(has_failure);
+}
+
+TEST(HasFailureTest, ReturnsTrueWhenThereIsNonfatalFailure) {
+  ADD_FAILURE();
+  const bool has_failure = HasFailure();
+  ClearCurrentTestPartResults();
+  EXPECT_TRUE(has_failure);
+}
+
+TEST(HasFailureTest, ReturnsTrueWhenThereAreFatalAndNonfatalFailures) {
+  FailFatally();
+  ADD_FAILURE();
+  const bool has_failure = HasFailure();
+  ClearCurrentTestPartResults();
+  EXPECT_TRUE(has_failure);
+}
+
+// A wrapper for calling HasFailure outside of a test body.
+static bool HasFailureHelper() { return testing::Test::HasFailure(); }
+
+TEST(HasFailureTest, WorksOutsideOfTestBody) {
+  EXPECT_FALSE(HasFailureHelper());
+}
+
+TEST(HasFailureTest, WorksOutsideOfTestBody2) {
+  ADD_FAILURE();
+  const bool has_failure = HasFailureHelper();
+  ClearCurrentTestPartResults();
+  EXPECT_TRUE(has_failure);
+}
+
+class TestListener : public EmptyTestEventListener {
+ public:
+  TestListener() : on_start_counter_(nullptr), is_destroyed_(nullptr) {}
+  TestListener(int* on_start_counter, bool* is_destroyed)
+      : on_start_counter_(on_start_counter),
+        is_destroyed_(is_destroyed) {}
+
+  ~TestListener() override {
+    if (is_destroyed_)
+      *is_destroyed_ = true;
+  }
+
+ protected:
+  void OnTestProgramStart(const UnitTest& /*unit_test*/) override {
+    if (on_start_counter_ != nullptr) (*on_start_counter_)++;
+  }
+
+ private:
+  int* on_start_counter_;
+  bool* is_destroyed_;
+};
+
+// Tests the constructor.
+TEST(TestEventListenersTest, ConstructionWorks) {
+  TestEventListeners listeners;
+
+  EXPECT_TRUE(TestEventListenersAccessor::GetRepeater(&listeners) != nullptr);
+  EXPECT_TRUE(listeners.default_result_printer() == nullptr);
+  EXPECT_TRUE(listeners.default_xml_generator() == nullptr);
+}
+
+// Tests that the TestEventListeners destructor deletes all the listeners it
+// owns.
+TEST(TestEventListenersTest, DestructionWorks) {
+  bool default_result_printer_is_destroyed = false;
+  bool default_xml_printer_is_destroyed = false;
+  bool extra_listener_is_destroyed = false;
+  TestListener* default_result_printer =
+      new TestListener(nullptr, &default_result_printer_is_destroyed);
+  TestListener* default_xml_printer =
+      new TestListener(nullptr, &default_xml_printer_is_destroyed);
+  TestListener* extra_listener =
+      new TestListener(nullptr, &extra_listener_is_destroyed);
+
+  {
+    TestEventListeners listeners;
+    TestEventListenersAccessor::SetDefaultResultPrinter(&listeners,
+                                                        default_result_printer);
+    TestEventListenersAccessor::SetDefaultXmlGenerator(&listeners,
+                                                       default_xml_printer);
+    listeners.Append(extra_listener);
+  }
+  EXPECT_TRUE(default_result_printer_is_destroyed);
+  EXPECT_TRUE(default_xml_printer_is_destroyed);
+  EXPECT_TRUE(extra_listener_is_destroyed);
+}
+
+// Tests that a listener Append'ed to a TestEventListeners list starts
+// receiving events.
+TEST(TestEventListenersTest, Append) {
+  int on_start_counter = 0;
+  bool is_destroyed = false;
+  TestListener* listener = new TestListener(&on_start_counter, &is_destroyed);
+  {
+    TestEventListeners listeners;
+    listeners.Append(listener);
+    TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(
+        *UnitTest::GetInstance());
+    EXPECT_EQ(1, on_start_counter);
+  }
+  EXPECT_TRUE(is_destroyed);
+}
+
+// Tests that listeners receive events in the order they were appended to
+// the list, except for *End requests, which must be received in the reverse
+// order.
+class SequenceTestingListener : public EmptyTestEventListener {
+ public:
+  SequenceTestingListener(std::vector<std::string>* vector, const char* id)
+      : vector_(vector), id_(id) {}
+
+ protected:
+  void OnTestProgramStart(const UnitTest& /*unit_test*/) override {
+    vector_->push_back(GetEventDescription("OnTestProgramStart"));
+  }
+
+  void OnTestProgramEnd(const UnitTest& /*unit_test*/) override {
+    vector_->push_back(GetEventDescription("OnTestProgramEnd"));
+  }
+
+  void OnTestIterationStart(const UnitTest& /*unit_test*/,
+                            int /*iteration*/) override {
+    vector_->push_back(GetEventDescription("OnTestIterationStart"));
+  }
+
+  void OnTestIterationEnd(const UnitTest& /*unit_test*/,
+                          int /*iteration*/) override {
+    vector_->push_back(GetEventDescription("OnTestIterationEnd"));
+  }
+
+ private:
+  std::string GetEventDescription(const char* method) {
+    Message message;
+    message << id_ << "." << method;
+    return message.GetString();
+  }
+
+  std::vector<std::string>* vector_;
+  const char* const id_;
+
+  GTEST_DISALLOW_COPY_AND_ASSIGN_(SequenceTestingListener);
+};
+
+TEST(EventListenerTest, AppendKeepsOrder) {
+  std::vector<std::string> vec;
+  TestEventListeners listeners;
+  listeners.Append(new SequenceTestingListener(&vec, "1st"));
+  listeners.Append(new SequenceTestingListener(&vec, "2nd"));
+  listeners.Append(new SequenceTestingListener(&vec, "3rd"));
+
+  TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(
+      *UnitTest::GetInstance());
+  ASSERT_EQ(3U, vec.size());
+  EXPECT_STREQ("1st.OnTestProgramStart", vec[0].c_str());
+  EXPECT_STREQ("2nd.OnTestProgramStart", vec[1].c_str());
+  EXPECT_STREQ("3rd.OnTestProgramStart", vec[2].c_str());
+
+  vec.clear();
+  TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramEnd(
+      *UnitTest::GetInstance());
+  ASSERT_EQ(3U, vec.size());
+  EXPECT_STREQ("3rd.OnTestProgramEnd", vec[0].c_str());
+  EXPECT_STREQ("2nd.OnTestProgramEnd", vec[1].c_str());
+  EXPECT_STREQ("1st.OnTestProgramEnd", vec[2].c_str());
+
+  vec.clear();
+  TestEventListenersAccessor::GetRepeater(&listeners)->OnTestIterationStart(
+      *UnitTest::GetInstance(), 0);
+  ASSERT_EQ(3U, vec.size());
+  EXPECT_STREQ("1st.OnTestIterationStart", vec[0].c_str());
+  EXPECT_STREQ("2nd.OnTestIterationStart", vec[1].c_str());
+  EXPECT_STREQ("3rd.OnTestIterationStart", vec[2].c_str());
+
+  vec.clear();
+  TestEventListenersAccessor::GetRepeater(&listeners)->OnTestIterationEnd(
+      *UnitTest::GetInstance(), 0);
+  ASSERT_EQ(3U, vec.size());
+  EXPECT_STREQ("3rd.OnTestIterationEnd", vec[0].c_str());
+  EXPECT_STREQ("2nd.OnTestIterationEnd", vec[1].c_str());
+  EXPECT_STREQ("1st.OnTestIterationEnd", vec[2].c_str());
+}
+
+// Tests that a listener removed from a TestEventListeners list stops receiving
+// events and is not deleted when the list is destroyed.
+TEST(TestEventListenersTest, Release) {
+  int on_start_counter = 0;
+  bool is_destroyed = false;
+  // Although Append passes the ownership of this object to the list,
+  // the following calls release it, and we need to delete it before the
+  // test ends.
+  TestListener* listener = new TestListener(&on_start_counter, &is_destroyed);
+  {
+    TestEventListeners listeners;
+    listeners.Append(listener);
+    EXPECT_EQ(listener, listeners.Release(listener));
+    TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(
+        *UnitTest::GetInstance());
+    EXPECT_TRUE(listeners.Release(listener) == nullptr);
+  }
+  EXPECT_EQ(0, on_start_counter);
+  EXPECT_FALSE(is_destroyed);
+  delete listener;
+}
+
+// Tests that no events are forwarded when event forwarding is disabled.
+TEST(EventListenerTest, SuppressEventForwarding) {
+  int on_start_counter = 0;
+  TestListener* listener = new TestListener(&on_start_counter, nullptr);
+
+  TestEventListeners listeners;
+  listeners.Append(listener);
+  ASSERT_TRUE(TestEventListenersAccessor::EventForwardingEnabled(listeners));
+  TestEventListenersAccessor::SuppressEventForwarding(&listeners);
+  ASSERT_FALSE(TestEventListenersAccessor::EventForwardingEnabled(listeners));
+  TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(
+      *UnitTest::GetInstance());
+  EXPECT_EQ(0, on_start_counter);
+}
+
+// Tests that events generated by Google Test are not forwarded in
+// death test subprocesses.
+TEST(EventListenerDeathTest, EventsNotForwardedInDeathTestSubprecesses) {
+  EXPECT_DEATH_IF_SUPPORTED({
+      GTEST_CHECK_(TestEventListenersAccessor::EventForwardingEnabled(
+          *GetUnitTestImpl()->listeners())) << "expected failure";},
+      "expected failure");
+}
+
+// Tests that a listener installed via SetDefaultResultPrinter() starts
+// receiving events and is returned via default_result_printer() and that
+// the previous default_result_printer is removed from the list and deleted.
+TEST(EventListenerTest, default_result_printer) {
+  int on_start_counter = 0;
+  bool is_destroyed = false;
+  TestListener* listener = new TestListener(&on_start_counter, &is_destroyed);
+
+  TestEventListeners listeners;
+  TestEventListenersAccessor::SetDefaultResultPrinter(&listeners, listener);
+
+  EXPECT_EQ(listener, listeners.default_result_printer());
+
+  TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(
+      *UnitTest::GetInstance());
+
+  EXPECT_EQ(1, on_start_counter);
+
+  // Replacing default_result_printer with something else should remove it
+  // from the list and destroy it.
+  TestEventListenersAccessor::SetDefaultResultPrinter(&listeners, nullptr);
+
+  EXPECT_TRUE(listeners.default_result_printer() == nullptr);
+  EXPECT_TRUE(is_destroyed);
+
+  // After broadcasting an event the counter is still the same, indicating
+  // the listener is not in the list anymore.
+  TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(
+      *UnitTest::GetInstance());
+  EXPECT_EQ(1, on_start_counter);
+}
+
+// Tests that the default_result_printer listener stops receiving events
+// when removed via Release and that is not owned by the list anymore.
+TEST(EventListenerTest, RemovingDefaultResultPrinterWorks) {
+  int on_start_counter = 0;
+  bool is_destroyed = false;
+  // Although Append passes the ownership of this object to the list,
+  // the following calls release it, and we need to delete it before the
+  // test ends.
+  TestListener* listener = new TestListener(&on_start_counter, &is_destroyed);
+  {
+    TestEventListeners listeners;
+    TestEventListenersAccessor::SetDefaultResultPrinter(&listeners, listener);
+
+    EXPECT_EQ(listener, listeners.Release(listener));
+    EXPECT_TRUE(listeners.default_result_printer() == nullptr);
+    EXPECT_FALSE(is_destroyed);
+
+    // Broadcasting events now should not affect default_result_printer.
+    TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(
+        *UnitTest::GetInstance());
+    EXPECT_EQ(0, on_start_counter);
+  }
+  // Destroying the list should not affect the listener now, too.
+  EXPECT_FALSE(is_destroyed);
+  delete listener;
+}
+
+// Tests that a listener installed via SetDefaultXmlGenerator() starts
+// receiving events and is returned via default_xml_generator() and that
+// the previous default_xml_generator is removed from the list and deleted.
+TEST(EventListenerTest, default_xml_generator) {
+  int on_start_counter = 0;
+  bool is_destroyed = false;
+  TestListener* listener = new TestListener(&on_start_counter, &is_destroyed);
+
+  TestEventListeners listeners;
+  TestEventListenersAccessor::SetDefaultXmlGenerator(&listeners, listener);
+
+  EXPECT_EQ(listener, listeners.default_xml_generator());
+
+  TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(
+      *UnitTest::GetInstance());
+
+  EXPECT_EQ(1, on_start_counter);
+
+  // Replacing default_xml_generator with something else should remove it
+  // from the list and destroy it.
+  TestEventListenersAccessor::SetDefaultXmlGenerator(&listeners, nullptr);
+
+  EXPECT_TRUE(listeners.default_xml_generator() == nullptr);
+  EXPECT_TRUE(is_destroyed);
+
+  // After broadcasting an event the counter is still the same, indicating
+  // the listener is not in the list anymore.
+  TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(
+      *UnitTest::GetInstance());
+  EXPECT_EQ(1, on_start_counter);
+}
+
+// Tests that the default_xml_generator listener stops receiving events
+// when removed via Release and that is not owned by the list anymore.
+TEST(EventListenerTest, RemovingDefaultXmlGeneratorWorks) {
+  int on_start_counter = 0;
+  bool is_destroyed = false;
+  // Although Append passes the ownership of this object to the list,
+  // the following calls release it, and we need to delete it before the
+  // test ends.
+  TestListener* listener = new TestListener(&on_start_counter, &is_destroyed);
+  {
+    TestEventListeners listeners;
+    TestEventListenersAccessor::SetDefaultXmlGenerator(&listeners, listener);
+
+    EXPECT_EQ(listener, listeners.Release(listener));
+    EXPECT_TRUE(listeners.default_xml_generator() == nullptr);
+    EXPECT_FALSE(is_destroyed);
+
+    // Broadcasting events now should not affect default_xml_generator.
+    TestEventListenersAccessor::GetRepeater(&listeners)->OnTestProgramStart(
+        *UnitTest::GetInstance());
+    EXPECT_EQ(0, on_start_counter);
+  }
+  // Destroying the list should not affect the listener now, too.
+  EXPECT_FALSE(is_destroyed);
+  delete listener;
+}
+
+// Sanity tests to ensure that the alternative, verbose spellings of
+// some of the macros work.  We don't test them thoroughly as that
+// would be quite involved.  Since their implementations are
+// straightforward, and they are rarely used, we'll just rely on the
+// users to tell us when they are broken.
+GTEST_TEST(AlternativeNameTest, Works) {  // GTEST_TEST is the same as TEST.
+  GTEST_SUCCEED() << "OK";  // GTEST_SUCCEED is the same as SUCCEED.
+
+  // GTEST_FAIL is the same as FAIL.
+  EXPECT_FATAL_FAILURE(GTEST_FAIL() << "An expected failure",
+                       "An expected failure");
+
+  // GTEST_ASSERT_XY is the same as ASSERT_XY.
+
+  GTEST_ASSERT_EQ(0, 0);
+  EXPECT_FATAL_FAILURE(GTEST_ASSERT_EQ(0, 1) << "An expected failure",
+                       "An expected failure");
+  EXPECT_FATAL_FAILURE(GTEST_ASSERT_EQ(1, 0) << "An expected failure",
+                       "An expected failure");
+
+  GTEST_ASSERT_NE(0, 1);
+  GTEST_ASSERT_NE(1, 0);
+  EXPECT_FATAL_FAILURE(GTEST_ASSERT_NE(0, 0) << "An expected failure",
+                       "An expected failure");
+
+  GTEST_ASSERT_LE(0, 0);
+  GTEST_ASSERT_LE(0, 1);
+  EXPECT_FATAL_FAILURE(GTEST_ASSERT_LE(1, 0) << "An expected failure",
+                       "An expected failure");
+
+  GTEST_ASSERT_LT(0, 1);
+  EXPECT_FATAL_FAILURE(GTEST_ASSERT_LT(0, 0) << "An expected failure",
+                       "An expected failure");
+  EXPECT_FATAL_FAILURE(GTEST_ASSERT_LT(1, 0) << "An expected failure",
+                       "An expected failure");
+
+  GTEST_ASSERT_GE(0, 0);
+  GTEST_ASSERT_GE(1, 0);
+  EXPECT_FATAL_FAILURE(GTEST_ASSERT_GE(0, 1) << "An expected failure",
+                       "An expected failure");
+
+  GTEST_ASSERT_GT(1, 0);
+  EXPECT_FATAL_FAILURE(GTEST_ASSERT_GT(0, 1) << "An expected failure",
+                       "An expected failure");
+  EXPECT_FATAL_FAILURE(GTEST_ASSERT_GT(1, 1) << "An expected failure",
+                       "An expected failure");
+}
+
+// Tests for internal utilities necessary for implementation of the universal
+// printing.
+
+class ConversionHelperBase {};
+class ConversionHelperDerived : public ConversionHelperBase {};
+
+// Tests that IsAProtocolMessage<T>::value is a compile-time constant.
+TEST(IsAProtocolMessageTest, ValueIsCompileTimeConstant) {
+  GTEST_COMPILE_ASSERT_(IsAProtocolMessage<::proto2::Message>::value,
+                        const_true);
+  GTEST_COMPILE_ASSERT_(!IsAProtocolMessage<int>::value, const_false);
+}
+
+// Tests that IsAProtocolMessage<T>::value is true when T is
+// proto2::Message or a sub-class of it.
+TEST(IsAProtocolMessageTest, ValueIsTrueWhenTypeIsAProtocolMessage) {
+  EXPECT_TRUE(IsAProtocolMessage< ::proto2::Message>::value);
+}
+
+// Tests that IsAProtocolMessage<T>::value is false when T is neither
+// ::proto2::Message nor a sub-class of it.
+TEST(IsAProtocolMessageTest, ValueIsFalseWhenTypeIsNotAProtocolMessage) {
+  EXPECT_FALSE(IsAProtocolMessage<int>::value);
+  EXPECT_FALSE(IsAProtocolMessage<const ConversionHelperBase>::value);
+}
+
+// Tests GTEST_REMOVE_REFERENCE_AND_CONST_.
+
+template <typename T1, typename T2>
+void TestGTestRemoveReferenceAndConst() {
+  static_assert(std::is_same<T1, GTEST_REMOVE_REFERENCE_AND_CONST_(T2)>::value,
+                "GTEST_REMOVE_REFERENCE_AND_CONST_ failed.");
+}
+
+TEST(RemoveReferenceToConstTest, Works) {
+  TestGTestRemoveReferenceAndConst<int, int>();
+  TestGTestRemoveReferenceAndConst<double, double&>();
+  TestGTestRemoveReferenceAndConst<char, const char>();
+  TestGTestRemoveReferenceAndConst<char, const char&>();
+  TestGTestRemoveReferenceAndConst<const char*, const char*>();
+}
+
+// Tests GTEST_REFERENCE_TO_CONST_.
+
+template <typename T1, typename T2>
+void TestGTestReferenceToConst() {
+  static_assert(std::is_same<T1, GTEST_REFERENCE_TO_CONST_(T2)>::value,
+                "GTEST_REFERENCE_TO_CONST_ failed.");
+}
+
+TEST(GTestReferenceToConstTest, Works) {
+  TestGTestReferenceToConst<const char&, char>();
+  TestGTestReferenceToConst<const int&, const int>();
+  TestGTestReferenceToConst<const double&, double>();
+  TestGTestReferenceToConst<const std::string&, const std::string&>();
+}
+
+
+// Tests IsContainerTest.
+
+class NonContainer {};
+
+TEST(IsContainerTestTest, WorksForNonContainer) {
+  EXPECT_EQ(sizeof(IsNotContainer), sizeof(IsContainerTest<int>(0)));
+  EXPECT_EQ(sizeof(IsNotContainer), sizeof(IsContainerTest<char[5]>(0)));
+  EXPECT_EQ(sizeof(IsNotContainer), sizeof(IsContainerTest<NonContainer>(0)));
+}
+
+TEST(IsContainerTestTest, WorksForContainer) {
+  EXPECT_EQ(sizeof(IsContainer),
+            sizeof(IsContainerTest<std::vector<bool> >(0)));
+  EXPECT_EQ(sizeof(IsContainer),
+            sizeof(IsContainerTest<std::map<int, double> >(0)));
+}
+
+struct ConstOnlyContainerWithPointerIterator {
+  using const_iterator = int*;
+  const_iterator begin() const;
+  const_iterator end() const;
+};
+
+struct ConstOnlyContainerWithClassIterator {
+  struct const_iterator {
+    const int& operator*() const;
+    const_iterator& operator++(/* pre-increment */);
+  };
+  const_iterator begin() const;
+  const_iterator end() const;
+};
+
+TEST(IsContainerTestTest, ConstOnlyContainer) {
+  EXPECT_EQ(sizeof(IsContainer),
+            sizeof(IsContainerTest<ConstOnlyContainerWithPointerIterator>(0)));
+  EXPECT_EQ(sizeof(IsContainer),
+            sizeof(IsContainerTest<ConstOnlyContainerWithClassIterator>(0)));
+}
+
+// Tests IsHashTable.
+struct AHashTable {
+  typedef void hasher;
+};
+struct NotReallyAHashTable {
+  typedef void hasher;
+  typedef void reverse_iterator;
+};
+TEST(IsHashTable, Basic) {
+  EXPECT_TRUE(testing::internal::IsHashTable<AHashTable>::value);
+  EXPECT_FALSE(testing::internal::IsHashTable<NotReallyAHashTable>::value);
+  EXPECT_FALSE(testing::internal::IsHashTable<std::vector<int>>::value);
+  EXPECT_TRUE(testing::internal::IsHashTable<std::unordered_set<int>>::value);
+}
+
+// Tests ArrayEq().
+
+TEST(ArrayEqTest, WorksForDegeneratedArrays) {
+  EXPECT_TRUE(ArrayEq(5, 5L));
+  EXPECT_FALSE(ArrayEq('a', 0));
+}
+
+TEST(ArrayEqTest, WorksForOneDimensionalArrays) {
+  // Note that a and b are distinct but compatible types.
+  const int a[] = { 0, 1 };
+  long b[] = { 0, 1 };
+  EXPECT_TRUE(ArrayEq(a, b));
+  EXPECT_TRUE(ArrayEq(a, 2, b));
+
+  b[0] = 2;
+  EXPECT_FALSE(ArrayEq(a, b));
+  EXPECT_FALSE(ArrayEq(a, 1, b));
+}
+
+TEST(ArrayEqTest, WorksForTwoDimensionalArrays) {
+  const char a[][3] = { "hi", "lo" };
+  const char b[][3] = { "hi", "lo" };
+  const char c[][3] = { "hi", "li" };
+
+  EXPECT_TRUE(ArrayEq(a, b));
+  EXPECT_TRUE(ArrayEq(a, 2, b));
+
+  EXPECT_FALSE(ArrayEq(a, c));
+  EXPECT_FALSE(ArrayEq(a, 2, c));
+}
+
+// Tests ArrayAwareFind().
+
+TEST(ArrayAwareFindTest, WorksForOneDimensionalArray) {
+  const char a[] = "hello";
+  EXPECT_EQ(a + 4, ArrayAwareFind(a, a + 5, 'o'));
+  EXPECT_EQ(a + 5, ArrayAwareFind(a, a + 5, 'x'));
+}
+
+TEST(ArrayAwareFindTest, WorksForTwoDimensionalArray) {
+  int a[][2] = { { 0, 1 }, { 2, 3 }, { 4, 5 } };
+  const int b[2] = { 2, 3 };
+  EXPECT_EQ(a + 1, ArrayAwareFind(a, a + 3, b));
+
+  const int c[2] = { 6, 7 };
+  EXPECT_EQ(a + 3, ArrayAwareFind(a, a + 3, c));
+}
+
+// Tests CopyArray().
+
+TEST(CopyArrayTest, WorksForDegeneratedArrays) {
+  int n = 0;
+  CopyArray('a', &n);
+  EXPECT_EQ('a', n);
+}
+
+TEST(CopyArrayTest, WorksForOneDimensionalArrays) {
+  const char a[3] = "hi";
+  int b[3];
+#ifndef __BORLANDC__  // C++Builder cannot compile some array size deductions.
+  CopyArray(a, &b);
+  EXPECT_TRUE(ArrayEq(a, b));
+#endif
+
+  int c[3];
+  CopyArray(a, 3, c);
+  EXPECT_TRUE(ArrayEq(a, c));
+}
+
+TEST(CopyArrayTest, WorksForTwoDimensionalArrays) {
+  const int a[2][3] = { { 0, 1, 2 }, { 3, 4, 5 } };
+  int b[2][3];
+#ifndef __BORLANDC__  // C++Builder cannot compile some array size deductions.
+  CopyArray(a, &b);
+  EXPECT_TRUE(ArrayEq(a, b));
+#endif
+
+  int c[2][3];
+  CopyArray(a, 2, c);
+  EXPECT_TRUE(ArrayEq(a, c));
+}
+
+// Tests NativeArray.
+
+TEST(NativeArrayTest, ConstructorFromArrayWorks) {
+  const int a[3] = { 0, 1, 2 };
+  NativeArray<int> na(a, 3, RelationToSourceReference());
+  EXPECT_EQ(3U, na.size());
+  EXPECT_EQ(a, na.begin());
+}
+
+TEST(NativeArrayTest, CreatesAndDeletesCopyOfArrayWhenAskedTo) {
+  typedef int Array[2];
+  Array* a = new Array[1];
+  (*a)[0] = 0;
+  (*a)[1] = 1;
+  NativeArray<int> na(*a, 2, RelationToSourceCopy());
+  EXPECT_NE(*a, na.begin());
+  delete[] a;
+  EXPECT_EQ(0, na.begin()[0]);
+  EXPECT_EQ(1, na.begin()[1]);
+
+  // We rely on the heap checker to verify that na deletes the copy of
+  // array.
+}
+
+TEST(NativeArrayTest, TypeMembersAreCorrect) {
+  StaticAssertTypeEq<char, NativeArray<char>::value_type>();
+  StaticAssertTypeEq<int[2], NativeArray<int[2]>::value_type>();
+
+  StaticAssertTypeEq<const char*, NativeArray<char>::const_iterator>();
+  StaticAssertTypeEq<const bool(*)[2], NativeArray<bool[2]>::const_iterator>();
+}
+
+TEST(NativeArrayTest, MethodsWork) {
+  const int a[3] = { 0, 1, 2 };
+  NativeArray<int> na(a, 3, RelationToSourceCopy());
+  ASSERT_EQ(3U, na.size());
+  EXPECT_EQ(3, na.end() - na.begin());
+
+  NativeArray<int>::const_iterator it = na.begin();
+  EXPECT_EQ(0, *it);
+  ++it;
+  EXPECT_EQ(1, *it);
+  it++;
+  EXPECT_EQ(2, *it);
+  ++it;
+  EXPECT_EQ(na.end(), it);
+
+  EXPECT_TRUE(na == na);
+
+  NativeArray<int> na2(a, 3, RelationToSourceReference());
+  EXPECT_TRUE(na == na2);
+
+  const int b1[3] = { 0, 1, 1 };
+  const int b2[4] = { 0, 1, 2, 3 };
+  EXPECT_FALSE(na == NativeArray<int>(b1, 3, RelationToSourceReference()));
+  EXPECT_FALSE(na == NativeArray<int>(b2, 4, RelationToSourceCopy()));
+}
+
+TEST(NativeArrayTest, WorksForTwoDimensionalArray) {
+  const char a[2][3] = { "hi", "lo" };
+  NativeArray<char[3]> na(a, 2, RelationToSourceReference());
+  ASSERT_EQ(2U, na.size());
+  EXPECT_EQ(a, na.begin());
+}
+
+// IndexSequence
+TEST(IndexSequence, MakeIndexSequence) {
+  using testing::internal::IndexSequence;
+  using testing::internal::MakeIndexSequence;
+  EXPECT_TRUE(
+      (std::is_same<IndexSequence<>, MakeIndexSequence<0>::type>::value));
+  EXPECT_TRUE(
+      (std::is_same<IndexSequence<0>, MakeIndexSequence<1>::type>::value));
+  EXPECT_TRUE(
+      (std::is_same<IndexSequence<0, 1>, MakeIndexSequence<2>::type>::value));
+  EXPECT_TRUE((
+      std::is_same<IndexSequence<0, 1, 2>, MakeIndexSequence<3>::type>::value));
+  EXPECT_TRUE(
+      (std::is_base_of<IndexSequence<0, 1, 2>, MakeIndexSequence<3>>::value));
+}
+
+// ElemFromList
+TEST(ElemFromList, Basic) {
+  using testing::internal::ElemFromList;
+  using Idx = testing::internal::MakeIndexSequence<3>::type;
+  EXPECT_TRUE((
+      std::is_same<int, ElemFromList<0, Idx, int, double, char>::type>::value));
+  EXPECT_TRUE(
+      (std::is_same<double,
+                    ElemFromList<1, Idx, int, double, char>::type>::value));
+  EXPECT_TRUE(
+      (std::is_same<char,
+                    ElemFromList<2, Idx, int, double, char>::type>::value));
+  EXPECT_TRUE(
+      (std::is_same<
+          char, ElemFromList<7, testing::internal::MakeIndexSequence<12>::type,
+                             int, int, int, int, int, int, int, char, int, int,
+                             int, int>::type>::value));
+}
+
+// FlatTuple
+TEST(FlatTuple, Basic) {
+  using testing::internal::FlatTuple;
+
+  FlatTuple<int, double, const char*> tuple = {};
+  EXPECT_EQ(0, tuple.Get<0>());
+  EXPECT_EQ(0.0, tuple.Get<1>());
+  EXPECT_EQ(nullptr, tuple.Get<2>());
+
+  tuple = FlatTuple<int, double, const char*>(7, 3.2, "Foo");
+  EXPECT_EQ(7, tuple.Get<0>());
+  EXPECT_EQ(3.2, tuple.Get<1>());
+  EXPECT_EQ(std::string("Foo"), tuple.Get<2>());
+
+  tuple.Get<1>() = 5.1;
+  EXPECT_EQ(5.1, tuple.Get<1>());
+}
+
+TEST(FlatTuple, ManyTypes) {
+  using testing::internal::FlatTuple;
+
+  // Instantiate FlatTuple with 257 ints.
+  // Tests show that we can do it with thousands of elements, but very long
+  // compile times makes it unusuitable for this test.
+#define GTEST_FLAT_TUPLE_INT8 int, int, int, int, int, int, int, int,
+#define GTEST_FLAT_TUPLE_INT16 GTEST_FLAT_TUPLE_INT8 GTEST_FLAT_TUPLE_INT8
+#define GTEST_FLAT_TUPLE_INT32 GTEST_FLAT_TUPLE_INT16 GTEST_FLAT_TUPLE_INT16
+#define GTEST_FLAT_TUPLE_INT64 GTEST_FLAT_TUPLE_INT32 GTEST_FLAT_TUPLE_INT32
+#define GTEST_FLAT_TUPLE_INT128 GTEST_FLAT_TUPLE_INT64 GTEST_FLAT_TUPLE_INT64
+#define GTEST_FLAT_TUPLE_INT256 GTEST_FLAT_TUPLE_INT128 GTEST_FLAT_TUPLE_INT128
+
+  // Let's make sure that we can have a very long list of types without blowing
+  // up the template instantiation depth.
+  FlatTuple<GTEST_FLAT_TUPLE_INT256 int> tuple;
+
+  tuple.Get<0>() = 7;
+  tuple.Get<99>() = 17;
+  tuple.Get<256>() = 1000;
+  EXPECT_EQ(7, tuple.Get<0>());
+  EXPECT_EQ(17, tuple.Get<99>());
+  EXPECT_EQ(1000, tuple.Get<256>());
+}
+
+// Tests SkipPrefix().
+
+TEST(SkipPrefixTest, SkipsWhenPrefixMatches) {
+  const char* const str = "hello";
+
+  const char* p = str;
+  EXPECT_TRUE(SkipPrefix("", &p));
+  EXPECT_EQ(str, p);
+
+  p = str;
+  EXPECT_TRUE(SkipPrefix("hell", &p));
+  EXPECT_EQ(str + 4, p);
+}
+
+TEST(SkipPrefixTest, DoesNotSkipWhenPrefixDoesNotMatch) {
+  const char* const str = "world";
+
+  const char* p = str;
+  EXPECT_FALSE(SkipPrefix("W", &p));
+  EXPECT_EQ(str, p);
+
+  p = str;
+  EXPECT_FALSE(SkipPrefix("world!", &p));
+  EXPECT_EQ(str, p);
+}
+
+// Tests ad_hoc_test_result().
+
+class AdHocTestResultTest : public testing::Test {
+ protected:
+  static void SetUpTestSuite() {
+    FAIL() << "A failure happened inside SetUpTestSuite().";
+  }
+};
+
+TEST_F(AdHocTestResultTest, AdHocTestResultForTestSuiteShowsFailure) {
+  const testing::TestResult& test_result = testing::UnitTest::GetInstance()
+                                               ->current_test_suite()
+                                               ->ad_hoc_test_result();
+  EXPECT_TRUE(test_result.Failed());
+}
+
+TEST_F(AdHocTestResultTest, AdHocTestResultTestForUnitTestDoesNotShowFailure) {
+  const testing::TestResult& test_result =
+      testing::UnitTest::GetInstance()->ad_hoc_test_result();
+  EXPECT_FALSE(test_result.Failed());
+}
+
+class DynamicUnitTestFixture : public testing::Test {};
+
+class DynamicTest : public DynamicUnitTestFixture {
+  void TestBody() override { EXPECT_TRUE(true); }
+};
+
+auto* dynamic_test = testing::RegisterTest(
+    "DynamicUnitTestFixture", "DynamicTest", "TYPE", "VALUE", __FILE__,
+    __LINE__, []() -> DynamicUnitTestFixture* { return new DynamicTest; });
+
+TEST(RegisterTest, WasRegistered) {
+  auto* unittest = testing::UnitTest::GetInstance();
+  for (int i = 0; i < unittest->total_test_suite_count(); ++i) {
+    auto* tests = unittest->GetTestSuite(i);
+    if (tests->name() != std::string("DynamicUnitTestFixture")) continue;
+    for (int j = 0; j < tests->total_test_count(); ++j) {
+      if (tests->GetTestInfo(j)->name() != std::string("DynamicTest")) continue;
+      // Found it.
+      EXPECT_STREQ(tests->GetTestInfo(j)->value_param(), "VALUE");
+      EXPECT_STREQ(tests->GetTestInfo(j)->type_param(), "TYPE");
+      return;
+    }
+  }
+
+  FAIL() << "Didn't find the test!";
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_xml_outfile1_test_.cc b/build/_deps/googletest-src/googletest/test/gtest_xml_outfile1_test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..19aa252a3010fd56eabe3768308a80d2dc6dbd5a
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_xml_outfile1_test_.cc
@@ -0,0 +1,43 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// gtest_xml_outfile1_test_ writes some xml via TestProperty used by
+// gtest_xml_outfiles_test.py
+
+#include "gtest/gtest.h"
+
+class PropertyOne : public testing::Test {
+ protected:
+  void SetUp() override { RecordProperty("SetUpProp", 1); }
+  void TearDown() override { RecordProperty("TearDownProp", 1); }
+};
+
+TEST_F(PropertyOne, TestSomeProperties) {
+  RecordProperty("TestSomeProperty", 1);
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_xml_outfile2_test_.cc b/build/_deps/googletest-src/googletest/test/gtest_xml_outfile2_test_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f9a2a6e9846ddcd95dbdb88d8c74d07c4bc9dffb
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_xml_outfile2_test_.cc
@@ -0,0 +1,43 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// gtest_xml_outfile2_test_ writes some xml via TestProperty used by
+// gtest_xml_outfiles_test.py
+
+#include "gtest/gtest.h"
+
+class PropertyTwo : public testing::Test {
+ protected:
+  void SetUp() override { RecordProperty("SetUpProp", 2); }
+  void TearDown() override { RecordProperty("TearDownProp", 2); }
+};
+
+TEST_F(PropertyTwo, TestSomeProperties) {
+  RecordProperty("TestSomeProperty", 2);
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_xml_outfiles_test.py b/build/_deps/googletest-src/googletest/test/gtest_xml_outfiles_test.py
new file mode 100755
index 0000000000000000000000000000000000000000..e093f6f05e3e3ad747df47cca9db51cb9ba5f258
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_xml_outfiles_test.py
@@ -0,0 +1,135 @@
+#!/usr/bin/env python
+#
+# Copyright 2008, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Unit test for the gtest_xml_output module."""
+
+import os
+from xml.dom import minidom, Node
+import gtest_test_utils
+import gtest_xml_test_utils
+
+GTEST_OUTPUT_SUBDIR = "xml_outfiles"
+GTEST_OUTPUT_1_TEST = "gtest_xml_outfile1_test_"
+GTEST_OUTPUT_2_TEST = "gtest_xml_outfile2_test_"
+
+EXPECTED_XML_1 = """<?xml version="1.0" encoding="UTF-8"?>
+<testsuites tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*" name="AllTests">
+  <testsuite name="PropertyOne" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="TestSomeProperties" status="run" result="completed" time="*" timestamp="*" classname="PropertyOne">
+      <properties>
+        <property name="SetUpProp" value="1"/>
+        <property name="TestSomeProperty" value="1"/>
+        <property name="TearDownProp" value="1"/>
+      </properties>
+    </testcase>
+  </testsuite>
+</testsuites>
+"""
+
+EXPECTED_XML_2 = """<?xml version="1.0" encoding="UTF-8"?>
+<testsuites tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*" name="AllTests">
+  <testsuite name="PropertyTwo" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="TestSomeProperties" status="run" result="completed" time="*" timestamp="*" classname="PropertyTwo">
+      <properties>
+        <property name="SetUpProp" value="2"/>
+        <property name="TestSomeProperty" value="2"/>
+        <property name="TearDownProp" value="2"/>
+      </properties>
+    </testcase>
+  </testsuite>
+</testsuites>
+"""
+
+
+class GTestXMLOutFilesTest(gtest_xml_test_utils.GTestXMLTestCase):
+  """Unit test for Google Test's XML output functionality."""
+
+  def setUp(self):
+    # We want the trailing '/' that the last "" provides in os.path.join, for
+    # telling Google Test to create an output directory instead of a single file
+    # for xml output.
+    self.output_dir_ = os.path.join(gtest_test_utils.GetTempDir(),
+                                    GTEST_OUTPUT_SUBDIR, "")
+    self.DeleteFilesAndDir()
+
+  def tearDown(self):
+    self.DeleteFilesAndDir()
+
+  def DeleteFilesAndDir(self):
+    try:
+      os.remove(os.path.join(self.output_dir_, GTEST_OUTPUT_1_TEST + ".xml"))
+    except os.error:
+      pass
+    try:
+      os.remove(os.path.join(self.output_dir_, GTEST_OUTPUT_2_TEST + ".xml"))
+    except os.error:
+      pass
+    try:
+      os.rmdir(self.output_dir_)
+    except os.error:
+      pass
+
+  def testOutfile1(self):
+    self._TestOutFile(GTEST_OUTPUT_1_TEST, EXPECTED_XML_1)
+
+  def testOutfile2(self):
+    self._TestOutFile(GTEST_OUTPUT_2_TEST, EXPECTED_XML_2)
+
+  def _TestOutFile(self, test_name, expected_xml):
+    gtest_prog_path = gtest_test_utils.GetTestExecutablePath(test_name)
+    command = [gtest_prog_path, "--gtest_output=xml:%s" % self.output_dir_]
+    p = gtest_test_utils.Subprocess(command,
+                                    working_dir=gtest_test_utils.GetTempDir())
+    self.assert_(p.exited)
+    self.assertEquals(0, p.exit_code)
+
+    output_file_name1 = test_name + ".xml"
+    output_file1 = os.path.join(self.output_dir_, output_file_name1)
+    output_file_name2 = 'lt-' + output_file_name1
+    output_file2 = os.path.join(self.output_dir_, output_file_name2)
+    self.assert_(os.path.isfile(output_file1) or os.path.isfile(output_file2),
+                 output_file1)
+
+    expected = minidom.parseString(expected_xml)
+    if os.path.isfile(output_file1):
+      actual = minidom.parse(output_file1)
+    else:
+      actual = minidom.parse(output_file2)
+    self.NormalizeXml(actual.documentElement)
+    self.AssertEquivalentNodes(expected.documentElement,
+                               actual.documentElement)
+    expected.unlink()
+    actual.unlink()
+
+
+if __name__ == "__main__":
+  os.environ["GTEST_STACK_TRACE_DEPTH"] = "0"
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/gtest_xml_output_unittest.py b/build/_deps/googletest-src/googletest/test/gtest_xml_output_unittest.py
new file mode 100755
index 0000000000000000000000000000000000000000..63b1af0b6c10161eca2c9eaf9731cb29b08b1827
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_xml_output_unittest.py
@@ -0,0 +1,389 @@
+#!/usr/bin/env python
+#
+# Copyright 2006, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Unit test for the gtest_xml_output module"""
+
+import datetime
+import errno
+import os
+import re
+import sys
+from xml.dom import minidom, Node
+
+import gtest_test_utils
+import gtest_xml_test_utils
+
+GTEST_FILTER_FLAG = '--gtest_filter'
+GTEST_LIST_TESTS_FLAG = '--gtest_list_tests'
+GTEST_OUTPUT_FLAG = '--gtest_output'
+GTEST_DEFAULT_OUTPUT_FILE = 'test_detail.xml'
+GTEST_PROGRAM_NAME = 'gtest_xml_output_unittest_'
+
+# The flag indicating stacktraces are not supported
+NO_STACKTRACE_SUPPORT_FLAG = '--no_stacktrace_support'
+
+# The environment variables for test sharding.
+TOTAL_SHARDS_ENV_VAR = 'GTEST_TOTAL_SHARDS'
+SHARD_INDEX_ENV_VAR = 'GTEST_SHARD_INDEX'
+SHARD_STATUS_FILE_ENV_VAR = 'GTEST_SHARD_STATUS_FILE'
+
+SUPPORTS_STACK_TRACES = NO_STACKTRACE_SUPPORT_FLAG not in sys.argv
+
+if SUPPORTS_STACK_TRACES:
+  STACK_TRACE_TEMPLATE = '\nStack trace:\n*'
+else:
+  STACK_TRACE_TEMPLATE = ''
+  # unittest.main() can't handle unknown flags
+  sys.argv.remove(NO_STACKTRACE_SUPPORT_FLAG)
+
+EXPECTED_NON_EMPTY_XML = """<?xml version="1.0" encoding="UTF-8"?>
+<testsuites tests="24" failures="4" disabled="2" errors="0" time="*" timestamp="*" name="AllTests" ad_hoc_property="42">
+  <testsuite name="SuccessfulTest" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="Succeeds" status="run" result="completed" time="*" timestamp="*" classname="SuccessfulTest"/>
+  </testsuite>
+  <testsuite name="FailedTest" tests="1" failures="1" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="Fails" status="run" result="completed" time="*" timestamp="*" classname="FailedTest">
+      <failure message="gtest_xml_output_unittest_.cc:*&#x0A;Expected equality of these values:&#x0A;  1&#x0A;  2" type=""><![CDATA[gtest_xml_output_unittest_.cc:*
+Expected equality of these values:
+  1
+  2%(stack)s]]></failure>
+    </testcase>
+  </testsuite>
+  <testsuite name="MixedResultTest" tests="3" failures="1" disabled="1" errors="0" time="*" timestamp="*">
+    <testcase name="Succeeds" status="run" result="completed" time="*" timestamp="*" classname="MixedResultTest"/>
+    <testcase name="Fails" status="run" result="completed" time="*" timestamp="*" classname="MixedResultTest">
+      <failure message="gtest_xml_output_unittest_.cc:*&#x0A;Expected equality of these values:&#x0A;  1&#x0A;  2" type=""><![CDATA[gtest_xml_output_unittest_.cc:*
+Expected equality of these values:
+  1
+  2%(stack)s]]></failure>
+      <failure message="gtest_xml_output_unittest_.cc:*&#x0A;Expected equality of these values:&#x0A;  2&#x0A;  3" type=""><![CDATA[gtest_xml_output_unittest_.cc:*
+Expected equality of these values:
+  2
+  3%(stack)s]]></failure>
+    </testcase>
+    <testcase name="DISABLED_test" status="notrun" result="suppressed" time="*" timestamp="*" classname="MixedResultTest"/>
+  </testsuite>
+  <testsuite name="XmlQuotingTest" tests="1" failures="1" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="OutputsCData" status="run" result="completed" time="*" timestamp="*" classname="XmlQuotingTest">
+      <failure message="gtest_xml_output_unittest_.cc:*&#x0A;Failed&#x0A;XML output: &lt;?xml encoding=&quot;utf-8&quot;&gt;&lt;top&gt;&lt;![CDATA[cdata text]]&gt;&lt;/top&gt;" type=""><![CDATA[gtest_xml_output_unittest_.cc:*
+Failed
+XML output: <?xml encoding="utf-8"><top><![CDATA[cdata text]]>]]&gt;<![CDATA[</top>%(stack)s]]></failure>
+    </testcase>
+  </testsuite>
+  <testsuite name="InvalidCharactersTest" tests="1" failures="1" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="InvalidCharactersInMessage" status="run" result="completed" time="*" timestamp="*" classname="InvalidCharactersTest">
+      <failure message="gtest_xml_output_unittest_.cc:*&#x0A;Failed&#x0A;Invalid characters in brackets []" type=""><![CDATA[gtest_xml_output_unittest_.cc:*
+Failed
+Invalid characters in brackets []%(stack)s]]></failure>
+    </testcase>
+  </testsuite>
+  <testsuite name="DisabledTest" tests="1" failures="0" disabled="1" errors="0" time="*" timestamp="*">
+    <testcase name="DISABLED_test_not_run" status="notrun" result="suppressed" time="*" timestamp="*" classname="DisabledTest"/>
+  </testsuite>
+  <testsuite name="SkippedTest" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="Skipped" status="run" result="skipped" time="*" timestamp="*" classname="SkippedTest"/>
+  </testsuite>
+  <testsuite name="PropertyRecordingTest" tests="4" failures="0" disabled="0" errors="0" time="*" timestamp="*" SetUpTestSuite="yes" TearDownTestSuite="aye">
+    <testcase name="OneProperty" status="run" result="completed" time="*" timestamp="*" classname="PropertyRecordingTest">
+      <properties>
+        <property name="key_1" value="1"/>
+      </properties>
+    </testcase>
+    <testcase name="IntValuedProperty" status="run" result="completed" time="*" timestamp="*" classname="PropertyRecordingTest">
+      <properties>
+        <property name="key_int" value="1"/>
+      </properties>
+    </testcase>
+    <testcase name="ThreeProperties" status="run" result="completed" time="*" timestamp="*" classname="PropertyRecordingTest">
+      <properties>
+        <property name="key_1" value="1"/>
+        <property name="key_2" value="2"/>
+        <property name="key_3" value="3"/>
+      </properties>
+    </testcase>
+    <testcase name="TwoValuesForOneKeyUsesLastValue" status="run" result="completed" time="*" timestamp="*" classname="PropertyRecordingTest">
+      <properties>
+        <property name="key_1" value="2"/>
+      </properties>
+    </testcase>
+  </testsuite>
+  <testsuite name="NoFixtureTest" tests="3" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+     <testcase name="RecordProperty" status="run" result="completed" time="*" timestamp="*" classname="NoFixtureTest">
+       <properties>
+         <property name="key" value="1"/>
+       </properties>
+     </testcase>
+     <testcase name="ExternalUtilityThatCallsRecordIntValuedProperty" status="run" result="completed" time="*" timestamp="*" classname="NoFixtureTest">
+       <properties>
+         <property name="key_for_utility_int" value="1"/>
+       </properties>
+     </testcase>
+     <testcase name="ExternalUtilityThatCallsRecordStringValuedProperty" status="run" result="completed" time="*" timestamp="*" classname="NoFixtureTest">
+       <properties>
+         <property name="key_for_utility_string" value="1"/>
+       </properties>
+     </testcase>
+  </testsuite>
+  <testsuite name="Single/ValueParamTest" tests="4" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="HasValueParamAttribute/0" value_param="33" status="run" result="completed" time="*" timestamp="*" classname="Single/ValueParamTest" />
+    <testcase name="HasValueParamAttribute/1" value_param="42" status="run" result="completed" time="*" timestamp="*" classname="Single/ValueParamTest" />
+    <testcase name="AnotherTestThatHasValueParamAttribute/0" value_param="33" status="run" result="completed" time="*" timestamp="*" classname="Single/ValueParamTest" />
+    <testcase name="AnotherTestThatHasValueParamAttribute/1" value_param="42" status="run" result="completed" time="*" timestamp="*" classname="Single/ValueParamTest" />
+  </testsuite>
+  <testsuite name="TypedTest/0" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="HasTypeParamAttribute" type_param="*" status="run" result="completed" time="*" timestamp="*" classname="TypedTest/0" />
+  </testsuite>
+  <testsuite name="TypedTest/1" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="HasTypeParamAttribute" type_param="*" status="run" result="completed" time="*" timestamp="*" classname="TypedTest/1" />
+  </testsuite>
+  <testsuite name="Single/TypeParameterizedTestSuite/0" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="HasTypeParamAttribute" type_param="*" status="run" result="completed" time="*" timestamp="*" classname="Single/TypeParameterizedTestSuite/0" />
+  </testsuite>
+  <testsuite name="Single/TypeParameterizedTestSuite/1" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="HasTypeParamAttribute" type_param="*" status="run" result="completed" time="*" timestamp="*" classname="Single/TypeParameterizedTestSuite/1" />
+  </testsuite>
+</testsuites>""" % {
+    'stack': STACK_TRACE_TEMPLATE
+}
+
+EXPECTED_FILTERED_TEST_XML = """<?xml version="1.0" encoding="UTF-8"?>
+<testsuites tests="1" failures="0" disabled="0" errors="0" time="*"
+            timestamp="*" name="AllTests" ad_hoc_property="42">
+  <testsuite name="SuccessfulTest" tests="1" failures="0" disabled="0"
+             errors="0" time="*" timestamp="*">
+    <testcase name="Succeeds" status="run" result="completed" time="*" timestamp="*" classname="SuccessfulTest"/>
+  </testsuite>
+</testsuites>"""
+
+EXPECTED_SHARDED_TEST_XML = """<?xml version="1.0" encoding="UTF-8"?>
+<testsuites tests="3" failures="0" disabled="0" errors="0" time="*" timestamp="*" name="AllTests" ad_hoc_property="42">
+  <testsuite name="SuccessfulTest" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="Succeeds" status="run" result="completed" time="*" timestamp="*" classname="SuccessfulTest"/>
+  </testsuite>
+  <testsuite name="PropertyRecordingTest" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*" SetUpTestSuite="yes" TearDownTestSuite="aye">
+    <testcase name="TwoValuesForOneKeyUsesLastValue" status="run" result="completed" time="*" timestamp="*" classname="PropertyRecordingTest">
+      <properties>
+        <property name="key_1" value="2"/>
+      </properties>
+    </testcase>
+  </testsuite>
+  <testsuite name="Single/ValueParamTest" tests="1" failures="0" disabled="0" errors="0" time="*" timestamp="*">
+    <testcase name="AnotherTestThatHasValueParamAttribute/0" value_param="33" status="run" result="completed" time="*" timestamp="*" classname="Single/ValueParamTest" />
+  </testsuite>
+</testsuites>"""
+
+EXPECTED_EMPTY_XML = """<?xml version="1.0" encoding="UTF-8"?>
+<testsuites tests="0" failures="0" disabled="0" errors="0" time="*"
+            timestamp="*" name="AllTests">
+</testsuites>"""
+
+GTEST_PROGRAM_PATH = gtest_test_utils.GetTestExecutablePath(GTEST_PROGRAM_NAME)
+
+SUPPORTS_TYPED_TESTS = 'TypedTest' in gtest_test_utils.Subprocess(
+    [GTEST_PROGRAM_PATH, GTEST_LIST_TESTS_FLAG], capture_stderr=False).output
+
+
+class GTestXMLOutputUnitTest(gtest_xml_test_utils.GTestXMLTestCase):
+  """
+  Unit test for Google Test's XML output functionality.
+  """
+
+  # This test currently breaks on platforms that do not support typed and
+  # type-parameterized tests, so we don't run it under them.
+  if SUPPORTS_TYPED_TESTS:
+    def testNonEmptyXmlOutput(self):
+      """
+      Runs a test program that generates a non-empty XML output, and
+      tests that the XML output is expected.
+      """
+      self._TestXmlOutput(GTEST_PROGRAM_NAME, EXPECTED_NON_EMPTY_XML, 1)
+
+  def testEmptyXmlOutput(self):
+    """Verifies XML output for a Google Test binary without actual tests.
+
+    Runs a test program that generates an empty XML output, and
+    tests that the XML output is expected.
+    """
+
+    self._TestXmlOutput('gtest_no_test_unittest', EXPECTED_EMPTY_XML, 0)
+
+  def testTimestampValue(self):
+    """Checks whether the timestamp attribute in the XML output is valid.
+
+    Runs a test program that generates an empty XML output, and checks if
+    the timestamp attribute in the testsuites tag is valid.
+    """
+    actual = self._GetXmlOutput('gtest_no_test_unittest', [], {}, 0)
+    date_time_str = actual.documentElement.getAttributeNode('timestamp').value
+    # datetime.strptime() is only available in Python 2.5+ so we have to
+    # parse the expected datetime manually.
+    match = re.match(r'(\d+)-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)', date_time_str)
+    self.assertTrue(
+        re.match,
+        'XML datettime string %s has incorrect format' % date_time_str)
+    date_time_from_xml = datetime.datetime(
+        year=int(match.group(1)), month=int(match.group(2)),
+        day=int(match.group(3)), hour=int(match.group(4)),
+        minute=int(match.group(5)), second=int(match.group(6)))
+
+    time_delta = abs(datetime.datetime.now() - date_time_from_xml)
+    # timestamp value should be near the current local time
+    self.assertTrue(time_delta < datetime.timedelta(seconds=600),
+                    'time_delta is %s' % time_delta)
+    actual.unlink()
+
+  def testDefaultOutputFile(self):
+    """
+    Confirms that Google Test produces an XML output file with the expected
+    default name if no name is explicitly specified.
+    """
+    output_file = os.path.join(gtest_test_utils.GetTempDir(),
+                               GTEST_DEFAULT_OUTPUT_FILE)
+    gtest_prog_path = gtest_test_utils.GetTestExecutablePath(
+        'gtest_no_test_unittest')
+    try:
+      os.remove(output_file)
+    except OSError:
+      e = sys.exc_info()[1]
+      if e.errno != errno.ENOENT:
+        raise
+
+    p = gtest_test_utils.Subprocess(
+        [gtest_prog_path, '%s=xml' % GTEST_OUTPUT_FLAG],
+        working_dir=gtest_test_utils.GetTempDir())
+    self.assert_(p.exited)
+    self.assertEquals(0, p.exit_code)
+    self.assert_(os.path.isfile(output_file))
+
+  def testSuppressedXmlOutput(self):
+    """
+    Tests that no XML file is generated if the default XML listener is
+    shut down before RUN_ALL_TESTS is invoked.
+    """
+
+    xml_path = os.path.join(gtest_test_utils.GetTempDir(),
+                            GTEST_PROGRAM_NAME + 'out.xml')
+    if os.path.isfile(xml_path):
+      os.remove(xml_path)
+
+    command = [GTEST_PROGRAM_PATH,
+               '%s=xml:%s' % (GTEST_OUTPUT_FLAG, xml_path),
+               '--shut_down_xml']
+    p = gtest_test_utils.Subprocess(command)
+    if p.terminated_by_signal:
+      # p.signal is available only if p.terminated_by_signal is True.
+      self.assertFalse(
+          p.terminated_by_signal,
+          '%s was killed by signal %d' % (GTEST_PROGRAM_NAME, p.signal))
+    else:
+      self.assert_(p.exited)
+      self.assertEquals(1, p.exit_code,
+                        "'%s' exited with code %s, which doesn't match "
+                        'the expected exit code %s.'
+                        % (command, p.exit_code, 1))
+
+    self.assert_(not os.path.isfile(xml_path))
+
+  def testFilteredTestXmlOutput(self):
+    """Verifies XML output when a filter is applied.
+
+    Runs a test program that executes only some tests and verifies that
+    non-selected tests do not show up in the XML output.
+    """
+
+    self._TestXmlOutput(GTEST_PROGRAM_NAME, EXPECTED_FILTERED_TEST_XML, 0,
+                        extra_args=['%s=SuccessfulTest.*' % GTEST_FILTER_FLAG])
+
+  def testShardedTestXmlOutput(self):
+    """Verifies XML output when run using multiple shards.
+
+    Runs a test program that executes only one shard and verifies that tests
+    from other shards do not show up in the XML output.
+    """
+
+    self._TestXmlOutput(
+        GTEST_PROGRAM_NAME,
+        EXPECTED_SHARDED_TEST_XML,
+        0,
+        extra_env={SHARD_INDEX_ENV_VAR: '0',
+                   TOTAL_SHARDS_ENV_VAR: '10'})
+
+  def _GetXmlOutput(self, gtest_prog_name, extra_args, extra_env,
+                    expected_exit_code):
+    """
+    Returns the xml output generated by running the program gtest_prog_name.
+    Furthermore, the program's exit code must be expected_exit_code.
+    """
+    xml_path = os.path.join(gtest_test_utils.GetTempDir(),
+                            gtest_prog_name + 'out.xml')
+    gtest_prog_path = gtest_test_utils.GetTestExecutablePath(gtest_prog_name)
+
+    command = ([gtest_prog_path, '%s=xml:%s' % (GTEST_OUTPUT_FLAG, xml_path)] +
+               extra_args)
+    environ_copy = os.environ.copy()
+    if extra_env:
+      environ_copy.update(extra_env)
+    p = gtest_test_utils.Subprocess(command, env=environ_copy)
+
+    if p.terminated_by_signal:
+      self.assert_(False,
+                   '%s was killed by signal %d' % (gtest_prog_name, p.signal))
+    else:
+      self.assert_(p.exited)
+      self.assertEquals(expected_exit_code, p.exit_code,
+                        "'%s' exited with code %s, which doesn't match "
+                        'the expected exit code %s.'
+                        % (command, p.exit_code, expected_exit_code))
+    actual = minidom.parse(xml_path)
+    return actual
+
+  def _TestXmlOutput(self, gtest_prog_name, expected_xml,
+                     expected_exit_code, extra_args=None, extra_env=None):
+    """
+    Asserts that the XML document generated by running the program
+    gtest_prog_name matches expected_xml, a string containing another
+    XML document.  Furthermore, the program's exit code must be
+    expected_exit_code.
+    """
+
+    actual = self._GetXmlOutput(gtest_prog_name, extra_args or [],
+                                extra_env or {}, expected_exit_code)
+    expected = minidom.parseString(expected_xml)
+    self.NormalizeXml(actual.documentElement)
+    self.AssertEquivalentNodes(expected.documentElement,
+                               actual.documentElement)
+    expected.unlink()
+    actual.unlink()
+
+
+if __name__ == '__main__':
+  os.environ['GTEST_STACK_TRACE_DEPTH'] = '1'
+  gtest_test_utils.Main()
diff --git a/build/_deps/googletest-src/googletest/test/gtest_xml_output_unittest_.cc b/build/_deps/googletest-src/googletest/test/gtest_xml_output_unittest_.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c95fd66cfaef24d07d350f649970f5aa7b0884e2
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_xml_output_unittest_.cc
@@ -0,0 +1,188 @@
+// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Unit test for Google Test XML output.
+//
+// A user can specify XML output in a Google Test program to run via
+// either the GTEST_OUTPUT environment variable or the --gtest_output
+// flag.  This is used for testing such functionality.
+//
+// This program will be invoked from a Python unit test.  Don't run it
+// directly.
+
+#include "gtest/gtest.h"
+
+using ::testing::InitGoogleTest;
+using ::testing::TestEventListeners;
+using ::testing::TestWithParam;
+using ::testing::UnitTest;
+using ::testing::Test;
+using ::testing::Values;
+
+class SuccessfulTest : public Test {
+};
+
+TEST_F(SuccessfulTest, Succeeds) {
+  SUCCEED() << "This is a success.";
+  ASSERT_EQ(1, 1);
+}
+
+class FailedTest : public Test {
+};
+
+TEST_F(FailedTest, Fails) {
+  ASSERT_EQ(1, 2);
+}
+
+class DisabledTest : public Test {
+};
+
+TEST_F(DisabledTest, DISABLED_test_not_run) {
+  FAIL() << "Unexpected failure: Disabled test should not be run";
+}
+
+class SkippedTest : public Test {
+};
+
+TEST_F(SkippedTest, Skipped) {
+  GTEST_SKIP();
+}
+
+TEST(MixedResultTest, Succeeds) {
+  EXPECT_EQ(1, 1);
+  ASSERT_EQ(1, 1);
+}
+
+TEST(MixedResultTest, Fails) {
+  EXPECT_EQ(1, 2);
+  ASSERT_EQ(2, 3);
+}
+
+TEST(MixedResultTest, DISABLED_test) {
+  FAIL() << "Unexpected failure: Disabled test should not be run";
+}
+
+TEST(XmlQuotingTest, OutputsCData) {
+  FAIL() << "XML output: "
+            "<?xml encoding=\"utf-8\"><top><![CDATA[cdata text]]></top>";
+}
+
+// Helps to test that invalid characters produced by test code do not make
+// it into the XML file.
+TEST(InvalidCharactersTest, InvalidCharactersInMessage) {
+  FAIL() << "Invalid characters in brackets [\x1\x2]";
+}
+
+class PropertyRecordingTest : public Test {
+ public:
+  static void SetUpTestSuite() { RecordProperty("SetUpTestSuite", "yes"); }
+  static void TearDownTestSuite() {
+    RecordProperty("TearDownTestSuite", "aye");
+  }
+};
+
+TEST_F(PropertyRecordingTest, OneProperty) {
+  RecordProperty("key_1", "1");
+}
+
+TEST_F(PropertyRecordingTest, IntValuedProperty) {
+  RecordProperty("key_int", 1);
+}
+
+TEST_F(PropertyRecordingTest, ThreeProperties) {
+  RecordProperty("key_1", "1");
+  RecordProperty("key_2", "2");
+  RecordProperty("key_3", "3");
+}
+
+TEST_F(PropertyRecordingTest, TwoValuesForOneKeyUsesLastValue) {
+  RecordProperty("key_1", "1");
+  RecordProperty("key_1", "2");
+}
+
+TEST(NoFixtureTest, RecordProperty) {
+  RecordProperty("key", "1");
+}
+
+void ExternalUtilityThatCallsRecordProperty(const std::string& key, int value) {
+  testing::Test::RecordProperty(key, value);
+}
+
+void ExternalUtilityThatCallsRecordProperty(const std::string& key,
+                                            const std::string& value) {
+  testing::Test::RecordProperty(key, value);
+}
+
+TEST(NoFixtureTest, ExternalUtilityThatCallsRecordIntValuedProperty) {
+  ExternalUtilityThatCallsRecordProperty("key_for_utility_int", 1);
+}
+
+TEST(NoFixtureTest, ExternalUtilityThatCallsRecordStringValuedProperty) {
+  ExternalUtilityThatCallsRecordProperty("key_for_utility_string", "1");
+}
+
+// Verifies that the test parameter value is output in the 'value_param'
+// XML attribute for value-parameterized tests.
+class ValueParamTest : public TestWithParam<int> {};
+TEST_P(ValueParamTest, HasValueParamAttribute) {}
+TEST_P(ValueParamTest, AnotherTestThatHasValueParamAttribute) {}
+INSTANTIATE_TEST_SUITE_P(Single, ValueParamTest, Values(33, 42));
+
+#if GTEST_HAS_TYPED_TEST
+// Verifies that the type parameter name is output in the 'type_param'
+// XML attribute for typed tests.
+template <typename T> class TypedTest : public Test {};
+typedef testing::Types<int, long> TypedTestTypes;
+TYPED_TEST_SUITE(TypedTest, TypedTestTypes);
+TYPED_TEST(TypedTest, HasTypeParamAttribute) {}
+#endif
+
+#if GTEST_HAS_TYPED_TEST_P
+// Verifies that the type parameter name is output in the 'type_param'
+// XML attribute for type-parameterized tests.
+template <typename T>
+class TypeParameterizedTestSuite : public Test {};
+TYPED_TEST_SUITE_P(TypeParameterizedTestSuite);
+TYPED_TEST_P(TypeParameterizedTestSuite, HasTypeParamAttribute) {}
+REGISTER_TYPED_TEST_SUITE_P(TypeParameterizedTestSuite, HasTypeParamAttribute);
+typedef testing::Types<int, long> TypeParameterizedTestSuiteTypes;  // NOLINT
+INSTANTIATE_TYPED_TEST_SUITE_P(Single, TypeParameterizedTestSuite,
+                               TypeParameterizedTestSuiteTypes);
+#endif
+
+int main(int argc, char** argv) {
+  InitGoogleTest(&argc, argv);
+
+  if (argc > 1 && strcmp(argv[1], "--shut_down_xml") == 0) {
+    TestEventListeners& listeners = UnitTest::GetInstance()->listeners();
+    delete listeners.Release(listeners.default_xml_generator());
+  }
+  testing::Test::RecordProperty("ad_hoc_property", "42");
+  return RUN_ALL_TESTS();
+}
diff --git a/build/_deps/googletest-src/googletest/test/gtest_xml_test_utils.py b/build/_deps/googletest-src/googletest/test/gtest_xml_test_utils.py
new file mode 100755
index 0000000000000000000000000000000000000000..9914a49ec188b7ceaaf23718b8f73236bac2251f
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/gtest_xml_test_utils.py
@@ -0,0 +1,196 @@
+# Copyright 2006, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Unit test utilities for gtest_xml_output"""
+
+import re
+from xml.dom import minidom, Node
+import gtest_test_utils
+
+GTEST_DEFAULT_OUTPUT_FILE = 'test_detail.xml'
+
+class GTestXMLTestCase(gtest_test_utils.TestCase):
+  """
+  Base class for tests of Google Test's XML output functionality.
+  """
+
+
+  def AssertEquivalentNodes(self, expected_node, actual_node):
+    """
+    Asserts that actual_node (a DOM node object) is equivalent to
+    expected_node (another DOM node object), in that either both of
+    them are CDATA nodes and have the same value, or both are DOM
+    elements and actual_node meets all of the following conditions:
+
+    *  It has the same tag name as expected_node.
+    *  It has the same set of attributes as expected_node, each with
+       the same value as the corresponding attribute of expected_node.
+       Exceptions are any attribute named "time", which needs only be
+       convertible to a floating-point number and any attribute named
+       "type_param" which only has to be non-empty.
+    *  It has an equivalent set of child nodes (including elements and
+       CDATA sections) as expected_node.  Note that we ignore the
+       order of the children as they are not guaranteed to be in any
+       particular order.
+    """
+
+    if expected_node.nodeType == Node.CDATA_SECTION_NODE:
+      self.assertEquals(Node.CDATA_SECTION_NODE, actual_node.nodeType)
+      self.assertEquals(expected_node.nodeValue, actual_node.nodeValue)
+      return
+
+    self.assertEquals(Node.ELEMENT_NODE, actual_node.nodeType)
+    self.assertEquals(Node.ELEMENT_NODE, expected_node.nodeType)
+    self.assertEquals(expected_node.tagName, actual_node.tagName)
+
+    expected_attributes = expected_node.attributes
+    actual_attributes   = actual_node  .attributes
+    self.assertEquals(
+        expected_attributes.length, actual_attributes.length,
+        'attribute numbers differ in element %s:\nExpected: %r\nActual: %r' % (
+            actual_node.tagName, expected_attributes.keys(),
+            actual_attributes.keys()))
+    for i in range(expected_attributes.length):
+      expected_attr = expected_attributes.item(i)
+      actual_attr   = actual_attributes.get(expected_attr.name)
+      self.assert_(
+          actual_attr is not None,
+          'expected attribute %s not found in element %s' %
+          (expected_attr.name, actual_node.tagName))
+      self.assertEquals(
+          expected_attr.value, actual_attr.value,
+          ' values of attribute %s in element %s differ: %s vs %s' %
+          (expected_attr.name, actual_node.tagName,
+           expected_attr.value, actual_attr.value))
+
+    expected_children = self._GetChildren(expected_node)
+    actual_children = self._GetChildren(actual_node)
+    self.assertEquals(
+        len(expected_children), len(actual_children),
+        'number of child elements differ in element ' + actual_node.tagName)
+    for child_id, child in expected_children.items():
+      self.assert_(child_id in actual_children,
+                   '<%s> is not in <%s> (in element %s)' %
+                   (child_id, actual_children, actual_node.tagName))
+      self.AssertEquivalentNodes(child, actual_children[child_id])
+
+  identifying_attribute = {
+      'testsuites': 'name',
+      'testsuite': 'name',
+      'testcase': 'name',
+      'failure': 'message',
+      'property': 'name',
+  }
+
+  def _GetChildren(self, element):
+    """
+    Fetches all of the child nodes of element, a DOM Element object.
+    Returns them as the values of a dictionary keyed by the IDs of the
+    children.  For <testsuites>, <testsuite>, <testcase>, and <property>
+    elements, the ID is the value of their "name" attribute; for <failure>
+    elements, it is the value of the "message" attribute; for <properties>
+    elements, it is the value of their parent's "name" attribute plus the
+    literal string "properties"; CDATA sections and non-whitespace
+    text nodes are concatenated into a single CDATA section with ID
+    "detail".  An exception is raised if any element other than the above
+    four is encountered, if two child elements with the same identifying
+    attributes are encountered, or if any other type of node is encountered.
+    """
+
+    children = {}
+    for child in element.childNodes:
+      if child.nodeType == Node.ELEMENT_NODE:
+        if child.tagName == 'properties':
+          self.assert_(child.parentNode is not None,
+                       'Encountered <properties> element without a parent')
+          child_id = child.parentNode.getAttribute('name') + '-properties'
+        else:
+          self.assert_(child.tagName in self.identifying_attribute,
+                       'Encountered unknown element <%s>' % child.tagName)
+          child_id = child.getAttribute(
+              self.identifying_attribute[child.tagName])
+        self.assert_(child_id not in children)
+        children[child_id] = child
+      elif child.nodeType in [Node.TEXT_NODE, Node.CDATA_SECTION_NODE]:
+        if 'detail' not in children:
+          if (child.nodeType == Node.CDATA_SECTION_NODE or
+              not child.nodeValue.isspace()):
+            children['detail'] = child.ownerDocument.createCDATASection(
+                child.nodeValue)
+        else:
+          children['detail'].nodeValue += child.nodeValue
+      else:
+        self.fail('Encountered unexpected node type %d' % child.nodeType)
+    return children
+
+  def NormalizeXml(self, element):
+    """
+    Normalizes Google Test's XML output to eliminate references to transient
+    information that may change from run to run.
+
+    *  The "time" attribute of <testsuites>, <testsuite> and <testcase>
+       elements is replaced with a single asterisk, if it contains
+       only digit characters.
+    *  The "timestamp" attribute of <testsuites> elements is replaced with a
+       single asterisk, if it contains a valid ISO8601 datetime value.
+    *  The "type_param" attribute of <testcase> elements is replaced with a
+       single asterisk (if it sn non-empty) as it is the type name returned
+       by the compiler and is platform dependent.
+    *  The line info reported in the first line of the "message"
+       attribute and CDATA section of <failure> elements is replaced with the
+       file's basename and a single asterisk for the line number.
+    *  The directory names in file paths are removed.
+    *  The stack traces are removed.
+    """
+
+    if element.tagName in ('testsuites', 'testsuite', 'testcase'):
+      timestamp = element.getAttributeNode('timestamp')
+      timestamp.value = re.sub(r'^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d$',
+                               '*', timestamp.value)
+    if element.tagName in ('testsuites', 'testsuite', 'testcase'):
+      time = element.getAttributeNode('time')
+      time.value = re.sub(r'^\d+(\.\d+)?$', '*', time.value)
+      type_param = element.getAttributeNode('type_param')
+      if type_param and type_param.value:
+        type_param.value = '*'
+    elif element.tagName == 'failure':
+      source_line_pat = r'^.*[/\\](.*:)\d+\n'
+      # Replaces the source line information with a normalized form.
+      message = element.getAttributeNode('message')
+      message.value = re.sub(source_line_pat, '\\1*\n', message.value)
+      for child in element.childNodes:
+        if child.nodeType == Node.CDATA_SECTION_NODE:
+          # Replaces the source line information with a normalized form.
+          cdata = re.sub(source_line_pat, '\\1*\n', child.nodeValue)
+          # Removes the actual stack trace.
+          child.nodeValue = re.sub(r'Stack trace:\n(.|\n)*',
+                                   'Stack trace:\n*', cdata)
+    for child in element.childNodes:
+      if child.nodeType == Node.ELEMENT_NODE:
+        self.NormalizeXml(child)
diff --git a/build/_deps/googletest-src/googletest/test/production.cc b/build/_deps/googletest-src/googletest/test/production.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0f69f6dbd2e26a3a9bdf756b480737a4ef4218d4
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/production.cc
@@ -0,0 +1,35 @@
+// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// This is part of the unit test for gtest_prod.h.
+
+#include "production.h"
+
+PrivateCode::PrivateCode() : x_(0) {}
diff --git a/build/_deps/googletest-src/googletest/test/production.h b/build/_deps/googletest-src/googletest/test/production.h
new file mode 100644
index 0000000000000000000000000000000000000000..542723b7087387d4fb529fc07a688bc1c8d78b1e
--- /dev/null
+++ b/build/_deps/googletest-src/googletest/test/production.h
@@ -0,0 +1,54 @@
+// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// This is part of the unit test for gtest_prod.h.
+
+#ifndef GTEST_TEST_PRODUCTION_H_
+#define GTEST_TEST_PRODUCTION_H_
+
+#include "gtest/gtest_prod.h"
+
+class PrivateCode {
+ public:
+  // Declares a friend test that does not use a fixture.
+  FRIEND_TEST(PrivateCodeTest, CanAccessPrivateMembers);
+
+  // Declares a friend test that uses a fixture.
+  FRIEND_TEST(PrivateCodeFixtureTest, CanAccessPrivateMembers);
+
+  PrivateCode();
+
+  int x() const { return x_; }
+ private:
+  void set_x(int an_x) { x_ = an_x; }
+  int x_;
+};
+
+#endif  // GTEST_TEST_PRODUCTION_H_
diff --git a/build/_deps/googletest-src/library.json b/build/_deps/googletest-src/library.json
new file mode 100644
index 0000000000000000000000000000000000000000..e46fcbdabced2d64b724bb23d42e42f4f16b8d88
--- /dev/null
+++ b/build/_deps/googletest-src/library.json
@@ -0,0 +1,59 @@
+{
+  "name": "googletest",
+  "keywords": "unittest, unit, test, gtest, gmock",
+  "description": "googletest is a testing framework developed by the Testing Technology team with Google's specific requirements and constraints in mind. No matter whether you work on Linux, Windows, or a Mac, if you write C++ code, googletest can help you. And it supports any kind of tests, not just unit tests.",
+   "license": "BSD-3-Clause",
+  "homepage": "https://github.com/google/googletest/blob/master/README.md",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/google/googletest.git"
+  },
+  "version": "1.8.1",
+  "frameworks": "arduino",
+  "platforms": [
+        "espressif32"
+  ],
+  "export": {
+        "include": [
+            "googlemock/include/*",
+            "googlemock/src/*",
+            "googletest/include/*",
+            "googletest/src/*"
+        ],
+        "exclude": [
+            "ci",
+            "googlemock/build-aux",
+            "googlemock/cmake",
+            "googlemock/make",
+            "googlemock/msvc",
+            "googlemock/scripts",
+            "googlemock/src/gmock-all.cc",
+            "googlemock/src/gmock_main.cc",
+            "googlemock/test",
+            "googlemock/CMakeLists.txt",
+            "googlemock/Makefile.am",
+            "googlemock/configure.ac",
+            "googletest/cmake",
+            "googletest/codegear",
+            "googletest/m4",
+            "googletest/make",
+            "googletest/msvc",
+            "googletest/scripts",
+            "googletest/src/gtest-all.cc",
+            "googletest/src/gtest_main.cc",
+            "googletest/test",
+            "googletest/xcode",
+            "googletest/CMakeLists.txt",
+            "googletest/Makefile.am",
+            "googletest/configure.ac"
+          ]
+  },
+  "build": {
+        "flags": [
+            "-Igooglemock/include",
+            "-Igooglemock",
+            "-Igoogletest/include",
+            "-Igoogletest"
+        ]
+  }
+}
diff --git a/build/_deps/googletest-src/platformio.ini b/build/_deps/googletest-src/platformio.ini
new file mode 100644
index 0000000000000000000000000000000000000000..3910026be65fc6d82225ed0467d0bdb3929306c6
--- /dev/null
+++ b/build/_deps/googletest-src/platformio.ini
@@ -0,0 +1,31 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; http://docs.platformio.org/page/projectconf.html
+
+
+[platformio]
+#src_dir = ./googlemock
+#src_dir = ./googletest
+src_dir = .
+
+[env:googletest_esp32]
+platform = espressif32
+board = esp32dev
+framework = arduino
+build_flags = -I./googletest/include -I./googletest
+src_filter = +<*> -<.git/> -<googlemock> -<googletest/codegear/> -<googletest/samples> -<googletest/test/> -<googletest/xcode> -<googletest/src> +<googletest/src/gtest-all.cc> +<googletest/src/gtest_main.cc>
+upload_speed = 921600
+
+[env:googlemock_esp32]
+platform = espressif32
+board = esp32dev
+framework = arduino
+build_flags = -I./googlemock/include -I./googletest/include -I./googletest -I./googlemock
+src_filter = +<*> -<.git/> -<googletest> -<googlemock/test/> -<googlemock/src> +<googlemock/src/gmock-all.cc> +<googlemock/src/gmock_main.cc> +<googletest/src/gtest-all.cc>
+upload_speed = 921600
diff --git a/build/_deps/googletest-subbuild/CMakeCache.txt b/build/_deps/googletest-subbuild/CMakeCache.txt
new file mode 100644
index 0000000000000000000000000000000000000000..85d0cf44ffea36c05a6aec19e24c9765abbe15e4
--- /dev/null
+++ b/build/_deps/googletest-subbuild/CMakeCache.txt
@@ -0,0 +1,111 @@
+# This is the CMakeCache file.
+# For build in directory: /home/huchen/FAISS/faiss/build/_deps/googletest-subbuild
+# It was generated by CMake: /usr/bin/cmake3
+# You can edit this file to change values found and used by cmake.
+# If you do not want to change any of the values, simply exit the editor.
+# If you do want to change a value, simply edit, save, and exit the editor.
+# The syntax for the file is as follows:
+# KEY:TYPE=VALUE
+# KEY is the name of a variable in the cache.
+# TYPE is a hint to GUIs for the type of VALUE, DO NOT EDIT TYPE!.
+# VALUE is the current value for the KEY.
+
+########################
+# EXTERNAL cache entries
+########################
+
+//Enable/Disable color output during build.
+CMAKE_COLOR_MAKEFILE:BOOL=ON
+
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+.PHONY : all
+
+# The main clean target
+clean:
+	$(MAKE) $(MAKESILENT) -f CMakeFiles/Makefile2 clean
+.PHONY : clean
+
+# The main clean target
+clean/fast: clean
+
+.PHONY : clean/fast
+
+# Prepare targets for installation.
+preinstall: all
+	$(MAKE) $(MAKESILENT) -f CMakeFiles/Makefile2 preinstall
+.PHONY : preinstall
+
+# Prepare targets for installation.
+preinstall/fast:
+	$(MAKE) $(MAKESILENT) -f CMakeFiles/Makefile2 preinstall
+.PHONY : preinstall/fast
+
+# clear depends
+depend:
+	$(CMAKE_COMMAND) -S$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR) --check-build-system CMakeFiles/Makefile.cmake 1
+.PHONY : depend
+
+#=============================================================================
+# Target rules for targets named googletest-populate
+
+# Build rule for target.
+googletest-populate: cmake_check_build_system
+	$(MAKE) $(MAKESILENT) -f CMakeFiles/Makefile2 googletest-populate
+.PHONY : googletest-populate
+
+# fast build rule for target.
+googletest-populate/fast:
+	$(MAKE) $(MAKESILENT) -f CMakeFiles/googletest-populate.dir/build.make CMakeFiles/googletest-populate.dir/build
+.PHONY : googletest-populate/fast
+
+# Help Target
+help:
+	@echo "The following are some of the valid targets for this Makefile:"
+	@echo "... all (the default if no target is provided)"
+	@echo "... clean"
+	@echo "... depend"
+	@echo "... edit_cache"
+	@echo "... rebuild_cache"
+	@echo "... googletest-populate"
+.PHONY : help
+
+
+
+#=============================================================================
+# Special targets to cleanup operation of make.
+
+# Special rule to run CMake to check the build system integrity.
+# No rule that depends on this can have commands that come from listfiles
+# because they might be regenerated.
+cmake_check_build_system:
+	$(CMAKE_COMMAND) -S$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR) --check-build-system CMakeFiles/Makefile.cmake 0
+.PHONY : cmake_check_build_system
+
diff --git a/build/_deps/googletest-subbuild/cmake_install.cmake b/build/_deps/googletest-subbuild/cmake_install.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..9a78ea4ea9987ac990e3eaa2b1f66e9bde853a50
--- /dev/null
+++ b/build/_deps/googletest-subbuild/cmake_install.cmake
@@ -0,0 +1,49 @@
+# Install script for directory: /home/huchen/FAISS/faiss/build/_deps/googletest-subbuild
+
+# Set the install prefix
+if(NOT DEFINED CMAKE_INSTALL_PREFIX)
+  set(CMAKE_INSTALL_PREFIX "/usr/local")
+endif()
+string(REGEX REPLACE "/$" "" CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
+
+# Set the install configuration name.
+if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME)
+  if(BUILD_TYPE)
+    string(REGEX REPLACE "^[^A-Za-z0-9_]+" ""
+           CMAKE_INSTALL_CONFIG_NAME "${BUILD_TYPE}")
+  else()
+    set(CMAKE_INSTALL_CONFIG_NAME "")
+  endif()
+  message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"")
+endif()
+
+# Set the component getting installed.
+if(NOT CMAKE_INSTALL_COMPONENT)
+  if(COMPONENT)
+    message(STATUS "Install component: \"${COMPONENT}\"")
+    set(CMAKE_INSTALL_COMPONENT "${COMPONENT}")
+  else()
+    set(CMAKE_INSTALL_COMPONENT)
+  endif()
+endif()
+
+# Install shared libraries without execute permission?
+if(NOT DEFINED CMAKE_INSTALL_SO_NO_EXE)
+  set(CMAKE_INSTALL_SO_NO_EXE "0")
+endif()
+
+# Is this installation the result of a crosscompile?
+if(NOT DEFINED CMAKE_CROSSCOMPILING)
+  set(CMAKE_CROSSCOMPILING "FALSE")
+endif()
+
+if(CMAKE_INSTALL_COMPONENT)
+  set(CMAKE_INSTALL_MANIFEST "install_manifest_${CMAKE_INSTALL_COMPONENT}.txt")
+else()
+  set(CMAKE_INSTALL_MANIFEST "install_manifest.txt")
+endif()
+
+string(REPLACE ";" "\n" CMAKE_INSTALL_MANIFEST_CONTENT
+       "${CMAKE_INSTALL_MANIFEST_FILES}")
+file(WRITE "/home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/${CMAKE_INSTALL_MANIFEST}"
+     "${CMAKE_INSTALL_MANIFEST_CONTENT}")
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/download-googletest-populate.cmake b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/download-googletest-populate.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..03e9f90dd5ed3daef993076487451453cede22bf
--- /dev/null
+++ b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/download-googletest-populate.cmake
@@ -0,0 +1,162 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+cmake_minimum_required(VERSION 3.5)
+
+function(check_file_hash has_hash hash_is_good)
+  if("${has_hash}" STREQUAL "")
+    message(FATAL_ERROR "has_hash Can't be empty")
+  endif()
+
+  if("${hash_is_good}" STREQUAL "")
+    message(FATAL_ERROR "hash_is_good Can't be empty")
+  endif()
+
+  if("" STREQUAL "")
+    # No check
+    set("${has_hash}" FALSE PARENT_SCOPE)
+    set("${hash_is_good}" FALSE PARENT_SCOPE)
+    return()
+  endif()
+
+  set("${has_hash}" TRUE PARENT_SCOPE)
+
+  message(STATUS "verifying file...
+       file='/home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz'")
+
+  file("" "/home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz" actual_value)
+
+  if(NOT "${actual_value}" STREQUAL "")
+    set("${hash_is_good}" FALSE PARENT_SCOPE)
+    message(STATUS " hash of
+    /home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz
+  does not match expected value
+    expected: ''
+      actual: '${actual_value}'")
+  else()
+    set("${hash_is_good}" TRUE PARENT_SCOPE)
+  endif()
+endfunction()
+
+function(sleep_before_download attempt)
+  if(attempt EQUAL 0)
+    return()
+  endif()
+
+  if(attempt EQUAL 1)
+    message(STATUS "Retrying...")
+    return()
+  endif()
+
+  set(sleep_seconds 0)
+
+  if(attempt EQUAL 2)
+    set(sleep_seconds 5)
+  elseif(attempt EQUAL 3)
+    set(sleep_seconds 5)
+  elseif(attempt EQUAL 4)
+    set(sleep_seconds 15)
+  elseif(attempt EQUAL 5)
+    set(sleep_seconds 60)
+  elseif(attempt EQUAL 6)
+    set(sleep_seconds 90)
+  elseif(attempt EQUAL 7)
+    set(sleep_seconds 300)
+  else()
+    set(sleep_seconds 1200)
+  endif()
+
+  message(STATUS "Retry after ${sleep_seconds} seconds (attempt #${attempt}) ...")
+
+  execute_process(COMMAND "${CMAKE_COMMAND}" -E sleep "${sleep_seconds}")
+endfunction()
+
+if("/home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz" STREQUAL "")
+  message(FATAL_ERROR "LOCAL can't be empty")
+endif()
+
+if("https://github.com/google/googletest/archive/release-1.10.0.tar.gz" STREQUAL "")
+  message(FATAL_ERROR "REMOTE can't be empty")
+endif()
+
+if(EXISTS "/home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz")
+  check_file_hash(has_hash hash_is_good)
+  if(has_hash)
+    if(hash_is_good)
+      message(STATUS "File already exists and hash match (skip download):
+  file='/home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz'
+  =''"
+      )
+      return()
+    else()
+      message(STATUS "File already exists but hash mismatch. Removing...")
+      file(REMOVE "/home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz")
+    endif()
+  else()
+    message(STATUS "File already exists but no hash specified (use URL_HASH):
+  file='/home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz'
+Old file will be removed and new file downloaded from URL."
+    )
+    file(REMOVE "/home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz")
+  endif()
+endif()
+
+set(retry_number 5)
+
+message(STATUS "Downloading...
+   dst='/home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz'
+   timeout='none'"
+)
+
+foreach(i RANGE ${retry_number})
+  sleep_before_download(${i})
+
+  foreach(url https://github.com/google/googletest/archive/release-1.10.0.tar.gz)
+    message(STATUS "Using src='${url}'")
+
+    
+    
+    
+    
+
+    file(
+        DOWNLOAD
+        "${url}" "/home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz"
+        SHOW_PROGRESS
+        # no TIMEOUT
+        STATUS status
+        LOG log
+        
+        
+    )
+
+    list(GET status 0 status_code)
+    list(GET status 1 status_string)
+
+    if(status_code EQUAL 0)
+      check_file_hash(has_hash hash_is_good)
+      if(has_hash AND NOT hash_is_good)
+        message(STATUS "Hash mismatch, removing...")
+        file(REMOVE "/home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz")
+      else()
+        message(STATUS "Downloading... done")
+        return()
+      endif()
+    else()
+      string(APPEND logFailedURLs "error: downloading '${url}' failed
+       status_code: ${status_code}
+       status_string: ${status_string}
+       log:
+       --- LOG BEGIN ---
+       ${log}
+       --- LOG END ---
+       "
+      )
+    endif()
+  endforeach()
+endforeach()
+
+message(FATAL_ERROR "Each download failed!
+  ${logFailedURLs}
+  "
+)
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/extract-googletest-populate.cmake b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/extract-googletest-populate.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..c379d9a0d4caecc5bf95cad7092f6cd33569020e
--- /dev/null
+++ b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/extract-googletest-populate.cmake
@@ -0,0 +1,58 @@
+# Make file names absolute:
+#
+get_filename_component(filename "/home/huchen/FAISS/faiss/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz" ABSOLUTE)
+get_filename_component(directory "/home/huchen/FAISS/faiss/build/_deps/googletest-src" ABSOLUTE)
+
+message(STATUS "extracting...
+     src='${filename}'
+     dst='${directory}'")
+
+if(NOT EXISTS "${filename}")
+  message(FATAL_ERROR "error: file to extract does not exist: '${filename}'")
+endif()
+
+# Prepare a space for extracting:
+#
+set(i 1234)
+while(EXISTS "${directory}/../ex-googletest-populate${i}")
+  math(EXPR i "${i} + 1")
+endwhile()
+set(ut_dir "${directory}/../ex-googletest-populate${i}")
+file(MAKE_DIRECTORY "${ut_dir}")
+
+# Extract it:
+#
+message(STATUS "extracting... [tar xfz]")
+execute_process(COMMAND ${CMAKE_COMMAND} -E tar xfz ${filename}
+  WORKING_DIRECTORY ${ut_dir}
+  RESULT_VARIABLE rv)
+
+if(NOT rv EQUAL 0)
+  message(STATUS "extracting... [error clean up]")
+  file(REMOVE_RECURSE "${ut_dir}")
+  message(FATAL_ERROR "error: extract of '${filename}' failed")
+endif()
+
+# Analyze what came out of the tar file:
+#
+message(STATUS "extracting... [analysis]")
+file(GLOB contents "${ut_dir}/*")
+list(REMOVE_ITEM contents "${ut_dir}/.DS_Store")
+list(LENGTH contents n)
+if(NOT n EQUAL 1 OR NOT IS_DIRECTORY "${contents}")
+  set(contents "${ut_dir}")
+endif()
+
+# Move "the one" directory to the final directory:
+#
+message(STATUS "extracting... [rename]")
+file(REMOVE_RECURSE ${directory})
+get_filename_component(contents ${contents} ABSOLUTE)
+file(RENAME ${contents} ${directory})
+
+# Clean up:
+#
+message(STATUS "extracting... [clean up]")
+file(REMOVE_RECURSE "${ut_dir}")
+
+message(STATUS "extracting... done")
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-build b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-build
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-configure b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-configure
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-done b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-done
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-download b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-download
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-install b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-install
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-mkdir b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-mkdir
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-patch b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-patch
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-test b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-test
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-update b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-update
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-urlinfo.txt b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-urlinfo.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2bd85dd05d5c4066f0270e3163d48f7aff34ee9a
--- /dev/null
+++ b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/googletest-populate-urlinfo.txt
@@ -0,0 +1,3 @@
+repository='external project URL'
+module='https://github.com/google/googletest/archive/release-1.10.0.tar.gz'
+tag=''
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/verify-googletest-populate.cmake b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/googletest-populate-stamp/verify-googletest-populate.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz
new file mode 100644
index 0000000000000000000000000000000000000000..ab10868ee252de6b39dcb5e708bc7b5700a2bee7
Binary files /dev/null and b/build/_deps/googletest-subbuild/googletest-populate-prefix/src/release-1.10.0.tar.gz differ
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/tmp/googletest-populate-cfgcmd.txt b/build/_deps/googletest-subbuild/googletest-populate-prefix/tmp/googletest-populate-cfgcmd.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6a6ed5fd2a2f3671b44653100d811d1afbc218c1
--- /dev/null
+++ b/build/_deps/googletest-subbuild/googletest-populate-prefix/tmp/googletest-populate-cfgcmd.txt
@@ -0,0 +1 @@
+cmd=''
diff --git a/build/_deps/googletest-subbuild/googletest-populate-prefix/tmp/googletest-populate-cfgcmd.txt.in b/build/_deps/googletest-subbuild/googletest-populate-prefix/tmp/googletest-populate-cfgcmd.txt.in
new file mode 100644
index 0000000000000000000000000000000000000000..b3f09efc8daf97b38ccba24f80ad720698c08a37
--- /dev/null
+++ b/build/_deps/googletest-subbuild/googletest-populate-prefix/tmp/googletest-populate-cfgcmd.txt.in
@@ -0,0 +1 @@
+cmd='@cmd@'
diff --git a/build/cmake/faiss-config-version.cmake b/build/cmake/faiss-config-version.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..c56d32fe94bd9197ca11e2b6dc5de1c9bcb4bb78
--- /dev/null
+++ b/build/cmake/faiss-config-version.cmake
@@ -0,0 +1,37 @@
+# This is a basic version file for the Config-mode of find_package().
+# It is used by write_basic_package_version_file() as input file for configure_file()
+# to create a version-file which can be installed along a config.cmake file.
+#
+# The created file sets PACKAGE_VERSION_EXACT if the current version string and
+# the requested version string are exactly the same and it sets
+# PACKAGE_VERSION_COMPATIBLE if the current version is >= requested version.
+# The variable CVF_VERSION must be set before calling configure_file().
+
+set(PACKAGE_VERSION "1.6.4")
+
+if(PACKAGE_VERSION VERSION_LESS PACKAGE_FIND_VERSION)
+  set(PACKAGE_VERSION_COMPATIBLE FALSE)
+else()
+  set(PACKAGE_VERSION_COMPATIBLE TRUE)
+  if(PACKAGE_FIND_VERSION STREQUAL PACKAGE_VERSION)
+    set(PACKAGE_VERSION_EXACT TRUE)
+  endif()
+endif()
+
+
+# if the installed project requested no architecture check, don't perform the check
+if("FALSE")
+  return()
+endif()
+
+# if the installed or the using project don't have CMAKE_SIZEOF_VOID_P set, ignore it:
+if("${CMAKE_SIZEOF_VOID_P}" STREQUAL "" OR "8" STREQUAL "")
+  return()
+endif()
+
+# check that the installed version has the same 32/64bit-ness as the one which is currently searching:
+if(NOT CMAKE_SIZEOF_VOID_P STREQUAL "8")
+  math(EXPR installedBits "8 * 8")
+  set(PACKAGE_VERSION "${PACKAGE_VERSION} (${installedBits}bit)")
+  set(PACKAGE_VERSION_UNSUITABLE TRUE)
+endif()
diff --git a/build/cmake/faiss-config.cmake b/build/cmake/faiss-config.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..43ea9d4c8803a42dcbd5e0427ad1adb4b773289d
--- /dev/null
+++ b/build/cmake/faiss-config.cmake
@@ -0,0 +1,7 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+include("${CMAKE_CURRENT_LIST_DIR}/faiss-targets.cmake")
diff --git a/build/cmake_install.cmake b/build/cmake_install.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..4b7c8f83a152a5a6f060c5564bd2b49ff4d3269b
--- /dev/null
+++ b/build/cmake_install.cmake
@@ -0,0 +1,84 @@
+# Install script for directory: /home/huchen/FAISS/faiss
+
+# Set the install prefix
+if(NOT DEFINED CMAKE_INSTALL_PREFIX)
+  set(CMAKE_INSTALL_PREFIX "/usr/local")
+endif()
+string(REGEX REPLACE "/$" "" CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
+
+# Set the install configuration name.
+if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME)
+  if(BUILD_TYPE)
+    string(REGEX REPLACE "^[^A-Za-z0-9_]+" ""
+           CMAKE_INSTALL_CONFIG_NAME "${BUILD_TYPE}")
+  else()
+    set(CMAKE_INSTALL_CONFIG_NAME "")
+  endif()
+  message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"")
+endif()
+
+# Set the component getting installed.
+if(NOT CMAKE_INSTALL_COMPONENT)
+  if(COMPONENT)
+    message(STATUS "Install component: \"${COMPONENT}\"")
+    set(CMAKE_INSTALL_COMPONENT "${COMPONENT}")
+  else()
+    set(CMAKE_INSTALL_COMPONENT)
+  endif()
+endif()
+
+# Install shared libraries without execute permission?
+if(NOT DEFINED CMAKE_INSTALL_SO_NO_EXE)
+  set(CMAKE_INSTALL_SO_NO_EXE "0")
+endif()
+
+# Is this installation the result of a crosscompile?
+if(NOT DEFINED CMAKE_CROSSCOMPILING)
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+	@echo "... gpu/impl/IVFFlat.i"
+	@echo "... gpu/impl/IVFFlat.s"
+	@echo "... gpu/impl/IVFFlatScan.o"
+	@echo "... gpu/impl/IVFFlatScan.i"
+	@echo "... gpu/impl/IVFFlatScan.s"
+	@echo "... gpu/impl/IVFInterleaved.o"
+	@echo "... gpu/impl/IVFInterleaved.i"
+	@echo "... gpu/impl/IVFInterleaved.s"
+	@echo "... gpu/impl/IVFPQ.o"
+	@echo "... gpu/impl/IVFPQ.i"
+	@echo "... gpu/impl/IVFPQ.s"
+	@echo "... gpu/impl/IVFUtils.o"
+	@echo "... gpu/impl/IVFUtils.i"
+	@echo "... gpu/impl/IVFUtils.s"
+	@echo "... gpu/impl/IVFUtilsSelect1.o"
+	@echo "... gpu/impl/IVFUtilsSelect1.i"
+	@echo "... gpu/impl/IVFUtilsSelect1.s"
+	@echo "... gpu/impl/IVFUtilsSelect2.o"
+	@echo "... gpu/impl/IVFUtilsSelect2.i"
+	@echo "... gpu/impl/IVFUtilsSelect2.s"
+	@echo "... gpu/impl/IcmEncoder.o"
+	@echo "... gpu/impl/IcmEncoder.i"
+	@echo "... gpu/impl/IcmEncoder.s"
+	@echo "... gpu/impl/InterleavedCodes.o"
+	@echo "... gpu/impl/InterleavedCodes.i"
+	@echo "... gpu/impl/InterleavedCodes.s"
+	@echo "... gpu/impl/L2Norm.o"
+	@echo "... gpu/impl/L2Norm.i"
+	@echo "... gpu/impl/L2Norm.s"
+	@echo "... gpu/impl/L2Select.o"
+	@echo "... gpu/impl/L2Select.i"
+	@echo "... gpu/impl/L2Select.s"
+	@echo "... gpu/impl/PQScanMultiPassPrecomputed.o"
+	@echo "... gpu/impl/PQScanMultiPassPrecomputed.i"
+	@echo "... gpu/impl/PQScanMultiPassPrecomputed.s"
+	@echo "... gpu/impl/RemapIndices.o"
+	@echo "... gpu/impl/RemapIndices.i"
+	@echo "... gpu/impl/RemapIndices.s"
+	@echo "... gpu/impl/VectorResidual.o"
+	@echo "... gpu/impl/VectorResidual.i"
+	@echo "... gpu/impl/VectorResidual.s"
+	@echo "... gpu/impl/scan/IVFInterleaved1.o"
+	@echo "... gpu/impl/scan/IVFInterleaved1.i"
+	@echo "... gpu/impl/scan/IVFInterleaved1.s"
+	@echo "... gpu/impl/scan/IVFInterleaved1024.o"
+	@echo "... gpu/impl/scan/IVFInterleaved1024.i"
+	@echo "... gpu/impl/scan/IVFInterleaved1024.s"
+	@echo "... gpu/impl/scan/IVFInterleaved128.o"
+	@echo "... gpu/impl/scan/IVFInterleaved128.i"
+	@echo "... gpu/impl/scan/IVFInterleaved128.s"
+	@echo "... gpu/impl/scan/IVFInterleaved2048.o"
+	@echo "... gpu/impl/scan/IVFInterleaved2048.i"
+	@echo "... gpu/impl/scan/IVFInterleaved2048.s"
+	@echo "... gpu/impl/scan/IVFInterleaved256.o"
+	@echo "... gpu/impl/scan/IVFInterleaved256.i"
+	@echo "... gpu/impl/scan/IVFInterleaved256.s"
+	@echo "... gpu/impl/scan/IVFInterleaved32.o"
+	@echo "... gpu/impl/scan/IVFInterleaved32.i"
+	@echo "... gpu/impl/scan/IVFInterleaved32.s"
+	@echo "... gpu/impl/scan/IVFInterleaved512.o"
+	@echo "... gpu/impl/scan/IVFInterleaved512.i"
+	@echo "... gpu/impl/scan/IVFInterleaved512.s"
+	@echo "... gpu/impl/scan/IVFInterleaved64.o"
+	@echo "... gpu/impl/scan/IVFInterleaved64.i"
+	@echo "... gpu/impl/scan/IVFInterleaved64.s"
+	@echo "... gpu/utils/BlockSelectFloat.o"
+	@echo "... gpu/utils/BlockSelectFloat.i"
+	@echo "... gpu/utils/BlockSelectFloat.s"
+	@echo "... gpu/utils/DeviceUtils.o"
+	@echo "... gpu/utils/DeviceUtils.i"
+	@echo "... gpu/utils/DeviceUtils.s"
+	@echo "... gpu/utils/StackDeviceMemory.o"
+	@echo "... gpu/utils/StackDeviceMemory.i"
+	@echo "... gpu/utils/StackDeviceMemory.s"
+	@echo "... gpu/utils/Timer.o"
+	@echo "... gpu/utils/Timer.i"
+	@echo "... gpu/utils/Timer.s"
+	@echo "... gpu/utils/WarpSelectFloat.o"
+	@echo "... gpu/utils/WarpSelectFloat.i"
+	@echo "... gpu/utils/WarpSelectFloat.s"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat1.o"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat1.i"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat1.s"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat128.o"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat128.i"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat128.s"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat256.o"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat256.i"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat256.s"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat32.o"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat32.i"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat32.s"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat64.o"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat64.i"
+	@echo "... gpu/utils/blockselect/BlockSelectFloat64.s"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatF1024.o"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatF1024.i"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatF1024.s"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatF2048.o"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatF2048.i"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatF2048.s"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatF512.o"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatF512.i"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatF512.s"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatT1024.o"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatT1024.i"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatT1024.s"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatT2048.o"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatT2048.i"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatT2048.s"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatT512.o"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatT512.i"
+	@echo "... gpu/utils/blockselect/BlockSelectFloatT512.s"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat1.o"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat1.i"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat1.s"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat128.o"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat128.i"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat128.s"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat256.o"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat256.i"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat256.s"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat32.o"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat32.i"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat32.s"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat64.o"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat64.i"
+	@echo "... gpu/utils/warpselect/WarpSelectFloat64.s"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatF1024.o"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatF1024.i"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatF1024.s"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatF2048.o"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatF2048.i"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatF2048.s"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatF512.o"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatF512.i"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatF512.s"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatT1024.o"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatT1024.i"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatT1024.s"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatT2048.o"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatT2048.i"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatT2048.s"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatT512.o"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatT512.i"
+	@echo "... gpu/utils/warpselect/WarpSelectFloatT512.s"
+	@echo "... impl/AdditiveQuantizer.o"
+	@echo "... impl/AdditiveQuantizer.i"
+	@echo "... impl/AdditiveQuantizer.s"
+	@echo "... impl/AuxIndexStructures.o"
+	@echo "... impl/AuxIndexStructures.i"
+	@echo "... impl/AuxIndexStructures.s"
+	@echo "... impl/FaissException.o"
+	@echo "... impl/FaissException.i"
+	@echo "... impl/FaissException.s"
+	@echo "... impl/HNSW.o"
+	@echo "... impl/HNSW.i"
+	@echo "... impl/HNSW.s"
+	@echo "... impl/LocalSearchQuantizer.o"
+	@echo "... impl/LocalSearchQuantizer.i"
+	@echo "... impl/LocalSearchQuantizer.s"
+	@echo "... impl/NNDescent.o"
+	@echo "... impl/NNDescent.i"
+	@echo "... impl/NNDescent.s"
+	@echo "... impl/NSG.o"
+	@echo "... impl/NSG.i"
+	@echo "... impl/NSG.s"
+	@echo "... impl/PolysemousTraining.o"
+	@echo "... impl/PolysemousTraining.i"
+	@echo "... impl/PolysemousTraining.s"
+	@echo "... impl/ProductQuantizer.o"
+	@echo "... impl/ProductQuantizer.i"
+	@echo "... impl/ProductQuantizer.s"
+	@echo "... impl/ResidualQuantizer.o"
+	@echo "... impl/ResidualQuantizer.i"
+	@echo "... impl/ResidualQuantizer.s"
+	@echo "... impl/ScalarQuantizer.o"
+	@echo "... impl/ScalarQuantizer.i"
+	@echo "... impl/ScalarQuantizer.s"
+	@echo "... impl/index_read.o"
+	@echo "... impl/index_read.i"
+	@echo "... impl/index_read.s"
+	@echo "... impl/index_write.o"
+	@echo "... impl/index_write.i"
+	@echo "... impl/index_write.s"
+	@echo "... impl/io.o"
+	@echo "... impl/io.i"
+	@echo "... impl/io.s"
+	@echo "... impl/kmeans1d.o"
+	@echo "... impl/kmeans1d.i"
+	@echo "... impl/kmeans1d.s"
+	@echo "... impl/lattice_Zn.o"
+	@echo "... impl/lattice_Zn.i"
+	@echo "... impl/lattice_Zn.s"
+	@echo "... impl/pq4_fast_scan.o"
+	@echo "... impl/pq4_fast_scan.i"
+	@echo "... impl/pq4_fast_scan.s"
+	@echo "... impl/pq4_fast_scan_search_1.o"
+	@echo "... impl/pq4_fast_scan_search_1.i"
+	@echo "... impl/pq4_fast_scan_search_1.s"
+	@echo "... impl/pq4_fast_scan_search_qbs.o"
+	@echo "... impl/pq4_fast_scan_search_qbs.i"
+	@echo "... impl/pq4_fast_scan_search_qbs.s"
+	@echo "... index_factory.o"
+	@echo "... index_factory.i"
+	@echo "... index_factory.s"
+	@echo "... invlists/BlockInvertedLists.o"
+	@echo "... invlists/BlockInvertedLists.i"
+	@echo "... invlists/BlockInvertedLists.s"
+	@echo "... invlists/DirectMap.o"
+	@echo "... invlists/DirectMap.i"
+	@echo "... invlists/DirectMap.s"
+	@echo "... invlists/InvertedLists.o"
+	@echo "... invlists/InvertedLists.i"
+	@echo "... invlists/InvertedLists.s"
+	@echo "... invlists/InvertedListsIOHook.o"
+	@echo "... invlists/InvertedListsIOHook.i"
+	@echo "... invlists/InvertedListsIOHook.s"
+	@echo "... invlists/OnDiskInvertedLists.o"
+	@echo "... invlists/OnDiskInvertedLists.i"
+	@echo "... invlists/OnDiskInvertedLists.s"
+	@echo "... utils/Heap.o"
+	@echo "... utils/Heap.i"
+	@echo "... utils/Heap.s"
+	@echo "... utils/WorkerThread.o"
+	@echo "... utils/WorkerThread.i"
+	@echo "... utils/WorkerThread.s"
+	@echo "... utils/distances.o"
+	@echo "... utils/distances.i"
+	@echo "... utils/distances.s"
+	@echo "... utils/distances_simd.o"
+	@echo "... utils/distances_simd.i"
+	@echo "... utils/distances_simd.s"
+	@echo "... utils/extra_distances.o"
+	@echo "... utils/extra_distances.i"
+	@echo "... utils/extra_distances.s"
+	@echo "... utils/hamming.o"
+	@echo "... utils/hamming.i"
+	@echo "... utils/hamming.s"
+	@echo "... utils/partitioning.o"
+	@echo "... utils/partitioning.i"
+	@echo "... utils/partitioning.s"
+	@echo "... utils/quantize_lut.o"
+	@echo "... utils/quantize_lut.i"
+	@echo "... utils/quantize_lut.s"
+	@echo "... utils/random.o"
+	@echo "... utils/random.i"
+	@echo "... utils/random.s"
+	@echo "... utils/utils.o"
+	@echo "... utils/utils.i"
+	@echo "... utils/utils.s"
+.PHONY : help
+
+
+
+#=============================================================================
+# Special targets to cleanup operation of make.
+
+# Special rule to run CMake to check the build system integrity.
+# No rule that depends on this can have commands that come from listfiles
+# because they might be regenerated.
+cmake_check_build_system:
+	cd /home/huchen/FAISS/faiss/build && $(CMAKE_COMMAND) -S$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR) --check-build-system CMakeFiles/Makefile.cmake 0
+.PHONY : cmake_check_build_system
+
diff --git a/build/faiss/cmake_install.cmake b/build/faiss/cmake_install.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..8b0d80f7e0fdba93ce32dbc2a47b4e05aaa5156d
--- /dev/null
+++ b/build/faiss/cmake_install.cmake
@@ -0,0 +1,432 @@
+# Install script for directory: /home/huchen/FAISS/faiss/faiss
+
+# Set the install prefix
+if(NOT DEFINED CMAKE_INSTALL_PREFIX)
+  set(CMAKE_INSTALL_PREFIX "/usr/local")
+endif()
+string(REGEX REPLACE "/$" "" CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
+
+# Set the install configuration name.
+if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME)
+  if(BUILD_TYPE)
+    string(REGEX REPLACE "^[^A-Za-z0-9_]+" ""
+           CMAKE_INSTALL_CONFIG_NAME "${BUILD_TYPE}")
+  else()
+    set(CMAKE_INSTALL_CONFIG_NAME "")
+  endif()
+  message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"")
+endif()
+
+# Set the component getting installed.
+if(NOT CMAKE_INSTALL_COMPONENT)
+  if(COMPONENT)
+    message(STATUS "Install component: \"${COMPONENT}\"")
+    set(CMAKE_INSTALL_COMPONENT "${COMPONENT}")
+  else()
+    set(CMAKE_INSTALL_COMPONENT)
+  endif()
+endif()
+
+# Install shared libraries without execute permission?
+if(NOT DEFINED CMAKE_INSTALL_SO_NO_EXE)
+  set(CMAKE_INSTALL_SO_NO_EXE "0")
+endif()
+
+# Is this installation the result of a crosscompile?
+if(NOT DEFINED CMAKE_CROSSCOMPILING)
+  set(CMAKE_CROSSCOMPILING "FALSE")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  if(EXISTS "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/lib64/libfaiss.so" AND
+     NOT IS_SYMLINK "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/lib64/libfaiss.so")
+    file(RPATH_CHECK
+         FILE "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/lib64/libfaiss.so"
+         RPATH "")
+  endif()
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/lib64" TYPE SHARED_LIBRARY FILES "/home/huchen/FAISS/faiss/build/faiss/libfaiss.so")
+  if(EXISTS "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/lib64/libfaiss.so" AND
+     NOT IS_SYMLINK "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/lib64/libfaiss.so")
+    file(RPATH_CHANGE
+         FILE "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/lib64/libfaiss.so"
+         OLD_RPATH "/home/huchen/intel-compiler-2017.5.239/mkl/lib/intel64_lin:/opt/dtk-21.04/hipblas/lib:"
+         NEW_RPATH "")
+    if(CMAKE_INSTALL_DO_STRIP)
+      execute_process(COMMAND "/opt/rh/devtoolset-7/root/usr/bin/strip" "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/lib64/libfaiss.so")
+    endif()
+  endif()
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/AutoTune.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/Clustering.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IVFlib.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/Index.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/Index2Layer.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexAdditiveQuantizer.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexBinary.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexBinaryFlat.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexBinaryFromFloat.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexBinaryHNSW.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexBinaryHash.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexBinaryIVF.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexFlat.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexFlatCodes.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexHNSW.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexIVF.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexIVFAdditiveQuantizer.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexIVFFlat.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexIVFPQ.h")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/IndexIVFPQFastScan.h")
+endif()
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+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
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+	@echo "... clean"
+	@echo "... depend"
+	@echo "... edit_cache"
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diff --git a/build/faiss/gpu/cmake_install.cmake b/build/faiss/gpu/cmake_install.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..7210d5b7b33f60148354fd287f8b2e841bacc86d
--- /dev/null
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+  if(COMPONENT)
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+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
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+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss/gpu" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/gpu/GpuCloner.h")
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+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
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+endif()
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+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
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+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
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+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
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+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/include/faiss/gpu" TYPE FILE FILES "/home/huchen/FAISS/faiss/faiss/gpu/GpuIndex.h")
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+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
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+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
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+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
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+demo_ivfpq_indexing_gpu.i: demo_ivfpq_indexing_gpu.cpp.i
+
+.PHONY : demo_ivfpq_indexing_gpu.i
+
+# target to preprocess a source file
+demo_ivfpq_indexing_gpu.cpp.i:
+	cd /home/huchen/FAISS/faiss/build && $(MAKE) $(MAKESILENT) -f faiss/gpu/test/CMakeFiles/demo_ivfpq_indexing_gpu.dir/build.make faiss/gpu/test/CMakeFiles/demo_ivfpq_indexing_gpu.dir/demo_ivfpq_indexing_gpu.cpp.i
+.PHONY : demo_ivfpq_indexing_gpu.cpp.i
+
+demo_ivfpq_indexing_gpu.s: demo_ivfpq_indexing_gpu.cpp.s
+
+.PHONY : demo_ivfpq_indexing_gpu.s
+
+# target to generate assembly for a file
+demo_ivfpq_indexing_gpu.cpp.s:
+	cd /home/huchen/FAISS/faiss/build && $(MAKE) $(MAKESILENT) -f faiss/gpu/test/CMakeFiles/demo_ivfpq_indexing_gpu.dir/build.make faiss/gpu/test/CMakeFiles/demo_ivfpq_indexing_gpu.dir/demo_ivfpq_indexing_gpu.cpp.s
+.PHONY : demo_ivfpq_indexing_gpu.cpp.s
+
+# Help Target
+help:
+	@echo "The following are some of the valid targets for this Makefile:"
+	@echo "... all (the default if no target is provided)"
+	@echo "... clean"
+	@echo "... depend"
+	@echo "... edit_cache"
+	@echo "... install"
+	@echo "... install/local"
+	@echo "... install/strip"
+	@echo "... list_install_components"
+	@echo "... rebuild_cache"
+	@echo "... test"
+	@echo "... TestCodePacking"
+	@echo "... TestGpuDistance"
+	@echo "... TestGpuIndexBinaryFlat"
+	@echo "... TestGpuIndexFlat"
+	@echo "... TestGpuIndexIVFFlat"
+	@echo "... TestGpuIndexIVFPQ"
+	@echo "... TestGpuIndexIVFScalarQuantizer"
+	@echo "... TestGpuMemoryException"
+	@echo "... TestGpuSelect"
+	@echo "... demo_ivfpq_indexing_gpu"
+	@echo "... faiss_gpu_test_helper"
+	@echo "... TestCodePacking.o"
+	@echo "... TestCodePacking.i"
+	@echo "... TestCodePacking.s"
+	@echo "... TestGpuDistance.o"
+	@echo "... TestGpuDistance.i"
+	@echo "... TestGpuDistance.s"
+	@echo "... TestGpuIndexBinaryFlat.o"
+	@echo "... TestGpuIndexBinaryFlat.i"
+	@echo "... TestGpuIndexBinaryFlat.s"
+	@echo "... TestGpuIndexFlat.o"
+	@echo "... TestGpuIndexFlat.i"
+	@echo "... TestGpuIndexFlat.s"
+	@echo "... TestGpuIndexIVFFlat.o"
+	@echo "... TestGpuIndexIVFFlat.i"
+	@echo "... TestGpuIndexIVFFlat.s"
+	@echo "... TestGpuIndexIVFPQ.o"
+	@echo "... TestGpuIndexIVFPQ.i"
+	@echo "... TestGpuIndexIVFPQ.s"
+	@echo "... TestGpuIndexIVFScalarQuantizer.o"
+	@echo "... TestGpuIndexIVFScalarQuantizer.i"
+	@echo "... TestGpuIndexIVFScalarQuantizer.s"
+	@echo "... TestGpuMemoryException.o"
+	@echo "... TestGpuMemoryException.i"
+	@echo "... TestGpuMemoryException.s"
+	@echo "... TestGpuSelect.o"
+	@echo "... TestGpuSelect.i"
+	@echo "... TestGpuSelect.s"
+	@echo "... TestUtils.o"
+	@echo "... TestUtils.i"
+	@echo "... TestUtils.s"
+	@echo "... demo_ivfpq_indexing_gpu.o"
+	@echo "... demo_ivfpq_indexing_gpu.i"
+	@echo "... demo_ivfpq_indexing_gpu.s"
+.PHONY : help
+
+
+
+#=============================================================================
+# Special targets to cleanup operation of make.
+
+# Special rule to run CMake to check the build system integrity.
+# No rule that depends on this can have commands that come from listfiles
+# because they might be regenerated.
+cmake_check_build_system:
+	cd /home/huchen/FAISS/faiss/build && $(CMAKE_COMMAND) -S$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR) --check-build-system CMakeFiles/Makefile.cmake 0
+.PHONY : cmake_check_build_system
+
diff --git a/build/faiss/gpu/test/TestCodePacking b/build/faiss/gpu/test/TestCodePacking
new file mode 100755
index 0000000000000000000000000000000000000000..6de7129f9783f2018f2de01e1d6f44c4c7ed2228
Binary files /dev/null and b/build/faiss/gpu/test/TestCodePacking differ
diff --git a/build/faiss/gpu/test/TestCodePacking[1]_include.cmake b/build/faiss/gpu/test/TestCodePacking[1]_include.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..7420f7dc48b4abf5e4c0525cf1fccd8f4ce52ef3
--- /dev/null
+++ b/build/faiss/gpu/test/TestCodePacking[1]_include.cmake
@@ -0,0 +1,5 @@
+if(EXISTS "/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestCodePacking[1]_tests.cmake")
+  include("/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestCodePacking[1]_tests.cmake")
+else()
+  add_test(TestCodePacking_NOT_BUILT TestCodePacking_NOT_BUILT)
+endif()
diff --git a/build/faiss/gpu/test/TestCodePacking[1]_tests.cmake b/build/faiss/gpu/test/TestCodePacking[1]_tests.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..27c351ba4add260232d060872811df73dcb67578
--- /dev/null
+++ b/build/faiss/gpu/test/TestCodePacking[1]_tests.cmake
@@ -0,0 +1,9 @@
+add_test( TestCodePacking.NonInterleavedCodes_UnpackPack /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestCodePacking [==[--gtest_filter=TestCodePacking.NonInterleavedCodes_UnpackPack]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestCodePacking.NonInterleavedCodes_UnpackPack PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestCodePacking.NonInterleavedCodes_PackUnpack /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestCodePacking [==[--gtest_filter=TestCodePacking.NonInterleavedCodes_PackUnpack]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestCodePacking.NonInterleavedCodes_PackUnpack PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestCodePacking.InterleavedCodes_UnpackPack /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestCodePacking [==[--gtest_filter=TestCodePacking.InterleavedCodes_UnpackPack]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestCodePacking.InterleavedCodes_UnpackPack PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestCodePacking.InterleavedCodes_PackUnpack /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestCodePacking [==[--gtest_filter=TestCodePacking.InterleavedCodes_PackUnpack]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestCodePacking.InterleavedCodes_PackUnpack PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+set( TestCodePacking_TESTS TestCodePacking.NonInterleavedCodes_UnpackPack TestCodePacking.NonInterleavedCodes_PackUnpack TestCodePacking.InterleavedCodes_UnpackPack TestCodePacking.InterleavedCodes_PackUnpack)
diff --git a/build/faiss/gpu/test/TestGpuDistance b/build/faiss/gpu/test/TestGpuDistance
new file mode 100755
index 0000000000000000000000000000000000000000..53299d5f545226076d62ff3f74fb01164c23e5b7
Binary files /dev/null and b/build/faiss/gpu/test/TestGpuDistance differ
diff --git a/build/faiss/gpu/test/TestGpuDistance[1]_include.cmake b/build/faiss/gpu/test/TestGpuDistance[1]_include.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..908f748606fe8e9b71894fb8923a03bed6c52fdc
--- /dev/null
+++ b/build/faiss/gpu/test/TestGpuDistance[1]_include.cmake
@@ -0,0 +1,5 @@
+if(EXISTS "/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance[1]_tests.cmake")
+  include("/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance[1]_tests.cmake")
+else()
+  add_test(TestGpuDistance_NOT_BUILT TestGpuDistance_NOT_BUILT)
+endif()
diff --git a/build/faiss/gpu/test/TestGpuDistance[1]_tests.cmake b/build/faiss/gpu/test/TestGpuDistance[1]_tests.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..de3d25ebfdd461fd6a51a206df51262c9f2164ad
--- /dev/null
+++ b/build/faiss/gpu/test/TestGpuDistance[1]_tests.cmake
@@ -0,0 +1,27 @@
+add_test( TestGpuDistance.Transposition_RR /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance [==[--gtest_filter=TestGpuDistance.Transposition_RR]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuDistance.Transposition_RR PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuDistance.Transposition_RC /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance [==[--gtest_filter=TestGpuDistance.Transposition_RC]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuDistance.Transposition_RC PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuDistance.Transposition_CR /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance [==[--gtest_filter=TestGpuDistance.Transposition_CR]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuDistance.Transposition_CR PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuDistance.Transposition_CC /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance [==[--gtest_filter=TestGpuDistance.Transposition_CC]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuDistance.Transposition_CC PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuDistance.L1 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance [==[--gtest_filter=TestGpuDistance.L1]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuDistance.L1 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuDistance.L1_RC /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance [==[--gtest_filter=TestGpuDistance.L1_RC]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuDistance.L1_RC PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuDistance.L1_CR /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance [==[--gtest_filter=TestGpuDistance.L1_CR]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuDistance.L1_CR PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuDistance.L1_CC /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance [==[--gtest_filter=TestGpuDistance.L1_CC]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuDistance.L1_CC PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuDistance.Linf /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance [==[--gtest_filter=TestGpuDistance.Linf]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuDistance.Linf PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuDistance.Lp /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance [==[--gtest_filter=TestGpuDistance.Lp]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuDistance.Lp PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuDistance.Canberra /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance [==[--gtest_filter=TestGpuDistance.Canberra]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuDistance.Canberra PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuDistance.BrayCurtis /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance [==[--gtest_filter=TestGpuDistance.BrayCurtis]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuDistance.BrayCurtis PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuDistance.JensenShannon /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance [==[--gtest_filter=TestGpuDistance.JensenShannon]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuDistance.JensenShannon PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+set( TestGpuDistance_TESTS TestGpuDistance.Transposition_RR TestGpuDistance.Transposition_RC TestGpuDistance.Transposition_CR TestGpuDistance.Transposition_CC TestGpuDistance.L1 TestGpuDistance.L1_RC TestGpuDistance.L1_CR TestGpuDistance.L1_CC TestGpuDistance.Linf TestGpuDistance.Lp TestGpuDistance.Canberra TestGpuDistance.BrayCurtis TestGpuDistance.JensenShannon)
diff --git a/build/faiss/gpu/test/TestGpuIndexBinaryFlat b/build/faiss/gpu/test/TestGpuIndexBinaryFlat
new file mode 100755
index 0000000000000000000000000000000000000000..449ff3080dfca2aed9fdb6e148853a929b888015
Binary files /dev/null and b/build/faiss/gpu/test/TestGpuIndexBinaryFlat differ
diff --git a/build/faiss/gpu/test/TestGpuIndexBinaryFlat[1]_include.cmake b/build/faiss/gpu/test/TestGpuIndexBinaryFlat[1]_include.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..901fb0cc228b6a6da88784c560999fc500818b56
--- /dev/null
+++ b/build/faiss/gpu/test/TestGpuIndexBinaryFlat[1]_include.cmake
@@ -0,0 +1,5 @@
+if(EXISTS "/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexBinaryFlat[1]_tests.cmake")
+  include("/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexBinaryFlat[1]_tests.cmake")
+else()
+  add_test(TestGpuIndexBinaryFlat_NOT_BUILT TestGpuIndexBinaryFlat_NOT_BUILT)
+endif()
diff --git a/build/faiss/gpu/test/TestGpuIndexBinaryFlat[1]_tests.cmake b/build/faiss/gpu/test/TestGpuIndexBinaryFlat[1]_tests.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..2f4dcfa8a87b510d419edccef643775153a2c069
--- /dev/null
+++ b/build/faiss/gpu/test/TestGpuIndexBinaryFlat[1]_tests.cmake
@@ -0,0 +1,5 @@
+add_test( TestGpuIndexBinaryFlat.Test8 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexBinaryFlat [==[--gtest_filter=TestGpuIndexBinaryFlat.Test8]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexBinaryFlat.Test8 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexBinaryFlat.Test32 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexBinaryFlat [==[--gtest_filter=TestGpuIndexBinaryFlat.Test32]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexBinaryFlat.Test32 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+set( TestGpuIndexBinaryFlat_TESTS TestGpuIndexBinaryFlat.Test8 TestGpuIndexBinaryFlat.Test32)
diff --git a/build/faiss/gpu/test/TestGpuIndexFlat b/build/faiss/gpu/test/TestGpuIndexFlat
new file mode 100755
index 0000000000000000000000000000000000000000..984dac08504cc76aae6ff8dbb75cfa37116f5d68
Binary files /dev/null and b/build/faiss/gpu/test/TestGpuIndexFlat differ
diff --git a/build/faiss/gpu/test/TestGpuIndexFlat[1]_include.cmake b/build/faiss/gpu/test/TestGpuIndexFlat[1]_include.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..a403658f12c69ca29f5e92bd084d87ea5c3ae44f
--- /dev/null
+++ b/build/faiss/gpu/test/TestGpuIndexFlat[1]_include.cmake
@@ -0,0 +1,5 @@
+if(EXISTS "/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat[1]_tests.cmake")
+  include("/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat[1]_tests.cmake")
+else()
+  add_test(TestGpuIndexFlat_NOT_BUILT TestGpuIndexFlat_NOT_BUILT)
+endif()
diff --git a/build/faiss/gpu/test/TestGpuIndexFlat[1]_tests.cmake b/build/faiss/gpu/test/TestGpuIndexFlat[1]_tests.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..7c19538f63fea8b3f913d79561500ec332ae84b1
--- /dev/null
+++ b/build/faiss/gpu/test/TestGpuIndexFlat[1]_tests.cmake
@@ -0,0 +1,27 @@
+add_test( TestGpuIndexFlat.IP_Float32 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat [==[--gtest_filter=TestGpuIndexFlat.IP_Float32]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexFlat.IP_Float32 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexFlat.L1_Float32 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat [==[--gtest_filter=TestGpuIndexFlat.L1_Float32]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexFlat.L1_Float32 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexFlat.Lp_Float32 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat [==[--gtest_filter=TestGpuIndexFlat.Lp_Float32]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexFlat.Lp_Float32 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexFlat.L2_Float32 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat [==[--gtest_filter=TestGpuIndexFlat.L2_Float32]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexFlat.L2_Float32 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexFlat.L2_Float32_K1 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat [==[--gtest_filter=TestGpuIndexFlat.L2_Float32_K1]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexFlat.L2_Float32_K1 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexFlat.IP_Float16 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat [==[--gtest_filter=TestGpuIndexFlat.IP_Float16]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexFlat.IP_Float16 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexFlat.L2_Float16 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat [==[--gtest_filter=TestGpuIndexFlat.L2_Float16]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexFlat.L2_Float16 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexFlat.L2_Float16_K1 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat [==[--gtest_filter=TestGpuIndexFlat.L2_Float16_K1]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexFlat.L2_Float16_K1 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexFlat.L2_Tiling /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat [==[--gtest_filter=TestGpuIndexFlat.L2_Tiling]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexFlat.L2_Tiling PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexFlat.QueryEmpty /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat [==[--gtest_filter=TestGpuIndexFlat.QueryEmpty]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexFlat.QueryEmpty PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexFlat.CopyFrom /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat [==[--gtest_filter=TestGpuIndexFlat.CopyFrom]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexFlat.CopyFrom PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexFlat.CopyTo /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat [==[--gtest_filter=TestGpuIndexFlat.CopyTo]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexFlat.CopyTo PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexFlat.UnifiedMemory /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat [==[--gtest_filter=TestGpuIndexFlat.UnifiedMemory]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexFlat.UnifiedMemory PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+set( TestGpuIndexFlat_TESTS TestGpuIndexFlat.IP_Float32 TestGpuIndexFlat.L1_Float32 TestGpuIndexFlat.Lp_Float32 TestGpuIndexFlat.L2_Float32 TestGpuIndexFlat.L2_Float32_K1 TestGpuIndexFlat.IP_Float16 TestGpuIndexFlat.L2_Float16 TestGpuIndexFlat.L2_Float16_K1 TestGpuIndexFlat.L2_Tiling TestGpuIndexFlat.QueryEmpty TestGpuIndexFlat.CopyFrom TestGpuIndexFlat.CopyTo TestGpuIndexFlat.UnifiedMemory)
diff --git a/build/faiss/gpu/test/TestGpuIndexIVFFlat b/build/faiss/gpu/test/TestGpuIndexIVFFlat
new file mode 100755
index 0000000000000000000000000000000000000000..baa8044bd344dc57d7c84a565292a0c02d2ef8c4
Binary files /dev/null and b/build/faiss/gpu/test/TestGpuIndexIVFFlat differ
diff --git a/build/faiss/gpu/test/TestGpuIndexIVFFlat[1]_include.cmake b/build/faiss/gpu/test/TestGpuIndexIVFFlat[1]_include.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..692dccd8eeb0e2baa6d507da89cc2ecb8fc341b3
--- /dev/null
+++ b/build/faiss/gpu/test/TestGpuIndexIVFFlat[1]_include.cmake
@@ -0,0 +1,5 @@
+if(EXISTS "/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat[1]_tests.cmake")
+  include("/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat[1]_tests.cmake")
+else()
+  add_test(TestGpuIndexIVFFlat_NOT_BUILT TestGpuIndexIVFFlat_NOT_BUILT)
+endif()
diff --git a/build/faiss/gpu/test/TestGpuIndexIVFFlat[1]_tests.cmake b/build/faiss/gpu/test/TestGpuIndexIVFFlat[1]_tests.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..4012c57a647e39e66f7d14ead08a6fce5d424f54
--- /dev/null
+++ b/build/faiss/gpu/test/TestGpuIndexIVFFlat[1]_tests.cmake
@@ -0,0 +1,37 @@
+add_test( TestGpuIndexIVFFlat.Float32_32_Add_L2 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float32_32_Add_L2]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float32_32_Add_L2 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float32_32_Add_IP /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float32_32_Add_IP]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float32_32_Add_IP PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float16_32_Add_L2 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float16_32_Add_L2]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float16_32_Add_L2 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float16_32_Add_IP /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float16_32_Add_IP]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float16_32_Add_IP PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float32_Query_L2 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float32_Query_L2]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float32_Query_L2 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float32_Query_IP /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float32_Query_IP]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float32_Query_IP PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float16_32_Query_L2 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float16_32_Query_L2]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float16_32_Query_L2 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float16_32_Query_IP /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float16_32_Query_IP]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float16_32_Query_IP PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float32_Query_L2_64 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float32_Query_L2_64]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float32_Query_L2_64 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float32_Query_IP_64 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float32_Query_IP_64]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float32_Query_IP_64 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float32_Query_L2_128 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float32_Query_L2_128]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float32_Query_L2_128 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float32_Query_IP_128 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float32_Query_IP_128]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float32_Query_IP_128 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float32_32_CopyTo /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float32_32_CopyTo]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float32_32_CopyTo PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float32_32_CopyFrom /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float32_32_CopyFrom]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float32_32_CopyFrom PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.Float32_negative /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.Float32_negative]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.Float32_negative PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.QueryNaN /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.QueryNaN]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.QueryNaN PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.AddNaN /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.AddNaN]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.AddNaN PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFFlat.UnifiedMemory /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat [==[--gtest_filter=TestGpuIndexIVFFlat.UnifiedMemory]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFFlat.UnifiedMemory PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+set( TestGpuIndexIVFFlat_TESTS TestGpuIndexIVFFlat.Float32_32_Add_L2 TestGpuIndexIVFFlat.Float32_32_Add_IP TestGpuIndexIVFFlat.Float16_32_Add_L2 TestGpuIndexIVFFlat.Float16_32_Add_IP TestGpuIndexIVFFlat.Float32_Query_L2 TestGpuIndexIVFFlat.Float32_Query_IP TestGpuIndexIVFFlat.Float16_32_Query_L2 TestGpuIndexIVFFlat.Float16_32_Query_IP TestGpuIndexIVFFlat.Float32_Query_L2_64 TestGpuIndexIVFFlat.Float32_Query_IP_64 TestGpuIndexIVFFlat.Float32_Query_L2_128 TestGpuIndexIVFFlat.Float32_Query_IP_128 TestGpuIndexIVFFlat.Float32_32_CopyTo TestGpuIndexIVFFlat.Float32_32_CopyFrom TestGpuIndexIVFFlat.Float32_negative TestGpuIndexIVFFlat.QueryNaN TestGpuIndexIVFFlat.AddNaN TestGpuIndexIVFFlat.UnifiedMemory)
diff --git a/build/faiss/gpu/test/TestGpuIndexIVFPQ b/build/faiss/gpu/test/TestGpuIndexIVFPQ
new file mode 100755
index 0000000000000000000000000000000000000000..5907a903d2ca45741a73f37f87701c864c8d3abb
Binary files /dev/null and b/build/faiss/gpu/test/TestGpuIndexIVFPQ differ
diff --git a/build/faiss/gpu/test/TestGpuIndexIVFPQ[1]_include.cmake b/build/faiss/gpu/test/TestGpuIndexIVFPQ[1]_include.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..7b2fe06be2ac8840bf4742ead45a4dbea9c73a82
--- /dev/null
+++ b/build/faiss/gpu/test/TestGpuIndexIVFPQ[1]_include.cmake
@@ -0,0 +1,5 @@
+if(EXISTS "/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ[1]_tests.cmake")
+  include("/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ[1]_tests.cmake")
+else()
+  add_test(TestGpuIndexIVFPQ_NOT_BUILT TestGpuIndexIVFPQ_NOT_BUILT)
+endif()
diff --git a/build/faiss/gpu/test/TestGpuIndexIVFPQ[1]_tests.cmake b/build/faiss/gpu/test/TestGpuIndexIVFPQ[1]_tests.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..4a8308125c2edee75b6102741c9bc7bddf4f00e1
--- /dev/null
+++ b/build/faiss/gpu/test/TestGpuIndexIVFPQ[1]_tests.cmake
@@ -0,0 +1,25 @@
+add_test( TestGpuIndexIVFPQ.Query_L2 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ [==[--gtest_filter=TestGpuIndexIVFPQ.Query_L2]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFPQ.Query_L2 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFPQ.Query_L2_MMCodeDistance /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ [==[--gtest_filter=TestGpuIndexIVFPQ.Query_L2_MMCodeDistance]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFPQ.Query_L2_MMCodeDistance PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFPQ.Query_IP_MMCodeDistance /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ [==[--gtest_filter=TestGpuIndexIVFPQ.Query_IP_MMCodeDistance]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFPQ.Query_IP_MMCodeDistance PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFPQ.Query_IP /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ [==[--gtest_filter=TestGpuIndexIVFPQ.Query_IP]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFPQ.Query_IP PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFPQ.Float16Coarse /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ [==[--gtest_filter=TestGpuIndexIVFPQ.Float16Coarse]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFPQ.Float16Coarse PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFPQ.Add_L2 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ [==[--gtest_filter=TestGpuIndexIVFPQ.Add_L2]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFPQ.Add_L2 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFPQ.Add_IP /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ [==[--gtest_filter=TestGpuIndexIVFPQ.Add_IP]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFPQ.Add_IP PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFPQ.CopyTo /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ [==[--gtest_filter=TestGpuIndexIVFPQ.CopyTo]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFPQ.CopyTo PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFPQ.CopyFrom /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ [==[--gtest_filter=TestGpuIndexIVFPQ.CopyFrom]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFPQ.CopyFrom PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFPQ.QueryNaN /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ [==[--gtest_filter=TestGpuIndexIVFPQ.QueryNaN]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFPQ.QueryNaN PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFPQ.AddNaN /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ [==[--gtest_filter=TestGpuIndexIVFPQ.AddNaN]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFPQ.AddNaN PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFPQ.UnifiedMemory /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ [==[--gtest_filter=TestGpuIndexIVFPQ.UnifiedMemory]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFPQ.UnifiedMemory PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+set( TestGpuIndexIVFPQ_TESTS TestGpuIndexIVFPQ.Query_L2 TestGpuIndexIVFPQ.Query_L2_MMCodeDistance TestGpuIndexIVFPQ.Query_IP_MMCodeDistance TestGpuIndexIVFPQ.Query_IP TestGpuIndexIVFPQ.Float16Coarse TestGpuIndexIVFPQ.Add_L2 TestGpuIndexIVFPQ.Add_IP TestGpuIndexIVFPQ.CopyTo TestGpuIndexIVFPQ.CopyFrom TestGpuIndexIVFPQ.QueryNaN TestGpuIndexIVFPQ.AddNaN TestGpuIndexIVFPQ.UnifiedMemory)
diff --git a/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer b/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer
new file mode 100755
index 0000000000000000000000000000000000000000..863ee73e4c1730f357168c733f577a50c48dd5b0
Binary files /dev/null and b/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer differ
diff --git a/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer[1]_include.cmake b/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer[1]_include.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..2f84bf6a6c3d39be041fd843a998f41d30a3bec4
--- /dev/null
+++ b/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer[1]_include.cmake
@@ -0,0 +1,5 @@
+if(EXISTS "/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer[1]_tests.cmake")
+  include("/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer[1]_tests.cmake")
+else()
+  add_test(TestGpuIndexIVFScalarQuantizer_NOT_BUILT TestGpuIndexIVFScalarQuantizer_NOT_BUILT)
+endif()
diff --git a/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer[1]_tests.cmake b/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer[1]_tests.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..1eea115ea8fe8e5ffbcb890fea72b191221cb978
--- /dev/null
+++ b/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer[1]_tests.cmake
@@ -0,0 +1,25 @@
+add_test( TestGpuIndexIVFScalarQuantizer.CopyTo_fp16 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer [==[--gtest_filter=TestGpuIndexIVFScalarQuantizer.CopyTo_fp16]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFScalarQuantizer.CopyTo_fp16 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFScalarQuantizer.CopyTo_8bit /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer [==[--gtest_filter=TestGpuIndexIVFScalarQuantizer.CopyTo_8bit]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFScalarQuantizer.CopyTo_8bit PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFScalarQuantizer.CopyTo_8bit_uniform /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer [==[--gtest_filter=TestGpuIndexIVFScalarQuantizer.CopyTo_8bit_uniform]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFScalarQuantizer.CopyTo_8bit_uniform PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFScalarQuantizer.CopyTo_6bit /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer [==[--gtest_filter=TestGpuIndexIVFScalarQuantizer.CopyTo_6bit]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFScalarQuantizer.CopyTo_6bit PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFScalarQuantizer.CopyTo_4bit /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer [==[--gtest_filter=TestGpuIndexIVFScalarQuantizer.CopyTo_4bit]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFScalarQuantizer.CopyTo_4bit PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFScalarQuantizer.CopyTo_4bit_uniform /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer [==[--gtest_filter=TestGpuIndexIVFScalarQuantizer.CopyTo_4bit_uniform]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFScalarQuantizer.CopyTo_4bit_uniform PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFScalarQuantizer.CopyFrom_fp16 /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer [==[--gtest_filter=TestGpuIndexIVFScalarQuantizer.CopyFrom_fp16]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFScalarQuantizer.CopyFrom_fp16 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFScalarQuantizer.CopyFrom_8bit /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer [==[--gtest_filter=TestGpuIndexIVFScalarQuantizer.CopyFrom_8bit]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFScalarQuantizer.CopyFrom_8bit PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFScalarQuantizer.CopyFrom_8bit_uniform /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer [==[--gtest_filter=TestGpuIndexIVFScalarQuantizer.CopyFrom_8bit_uniform]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFScalarQuantizer.CopyFrom_8bit_uniform PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFScalarQuantizer.CopyFrom_6bit /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer [==[--gtest_filter=TestGpuIndexIVFScalarQuantizer.CopyFrom_6bit]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFScalarQuantizer.CopyFrom_6bit PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFScalarQuantizer.CopyFrom_4bit /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer [==[--gtest_filter=TestGpuIndexIVFScalarQuantizer.CopyFrom_4bit]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFScalarQuantizer.CopyFrom_4bit PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+add_test( TestGpuIndexIVFScalarQuantizer.CopyFrom_4bit_uniform /home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer [==[--gtest_filter=TestGpuIndexIVFScalarQuantizer.CopyFrom_4bit_uniform]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestGpuIndexIVFScalarQuantizer.CopyFrom_4bit_uniform PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/faiss/gpu/test)
+set( TestGpuIndexIVFScalarQuantizer_TESTS TestGpuIndexIVFScalarQuantizer.CopyTo_fp16 TestGpuIndexIVFScalarQuantizer.CopyTo_8bit TestGpuIndexIVFScalarQuantizer.CopyTo_8bit_uniform TestGpuIndexIVFScalarQuantizer.CopyTo_6bit TestGpuIndexIVFScalarQuantizer.CopyTo_4bit TestGpuIndexIVFScalarQuantizer.CopyTo_4bit_uniform TestGpuIndexIVFScalarQuantizer.CopyFrom_fp16 TestGpuIndexIVFScalarQuantizer.CopyFrom_8bit TestGpuIndexIVFScalarQuantizer.CopyFrom_8bit_uniform TestGpuIndexIVFScalarQuantizer.CopyFrom_6bit TestGpuIndexIVFScalarQuantizer.CopyFrom_4bit TestGpuIndexIVFScalarQuantizer.CopyFrom_4bit_uniform)
diff --git a/build/faiss/gpu/test/TestGpuMemoryException b/build/faiss/gpu/test/TestGpuMemoryException
new file mode 100755
index 0000000000000000000000000000000000000000..bd60fc19d180589ef06f48617b5fa276a1e2806e
Binary files /dev/null and b/build/faiss/gpu/test/TestGpuMemoryException differ
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+/* ----------------------------------------------------------------------------
+ * This file was automatically generated by SWIG (http://www.swig.org).
+ * Version 4.0.2
+ *
+ * This file is not intended to be easily readable and contains a number of
+ * coding conventions designed to improve portability and efficiency. Do not make
+ * changes to this file unless you know what you are doing--modify the SWIG
+ * interface file instead.
+ * ----------------------------------------------------------------------------- */
+
+
+#ifndef SWIGPYTHON
+#define SWIGPYTHON
+#endif
+
+#define SWIG_PYTHON_DIRECTOR_NO_VTABLE
+
+
+#ifdef __cplusplus
+/* SwigValueWrapper is described in swig.swg */
+template<typename T> class SwigValueWrapper {
+  struct SwigMovePointer {
+    T *ptr;
+    SwigMovePointer(T *p) : ptr(p) { }
+    ~SwigMovePointer() { delete ptr; }
+    SwigMovePointer& operator=(SwigMovePointer& rhs) { T* oldptr = ptr; ptr = 0; delete oldptr; ptr = rhs.ptr; rhs.ptr = 0; return *this; }
+  } pointer;
+  SwigValueWrapper& operator=(const SwigValueWrapper<T>& rhs);
+  SwigValueWrapper(const SwigValueWrapper<T>& rhs);
+public:
+  SwigValueWrapper() : pointer(0) { }
+  SwigValueWrapper& operator=(const T& t) { SwigMovePointer tmp(new T(t)); pointer = tmp; return *this; }
+  operator T&() const { return *pointer.ptr; }
+  T *operator&() { return pointer.ptr; }
+};
+
+template <typename T> T SwigValueInit() {
+  return T();
+}
+#endif
+
+/* -----------------------------------------------------------------------------
+ *  This section contains generic SWIG labels for method/variable
+ *  declarations/attributes, and other compiler dependent labels.
+ * ----------------------------------------------------------------------------- */
+
+/* template workaround for compilers that cannot correctly implement the C++ standard */
+#ifndef SWIGTEMPLATEDISAMBIGUATOR
+# if defined(__SUNPRO_CC) && (__SUNPRO_CC <= 0x560)
+#  define SWIGTEMPLATEDISAMBIGUATOR template
+# elif defined(__HP_aCC)
+/* Needed even with `aCC -AA' when `aCC -V' reports HP ANSI C++ B3910B A.03.55 */
+/* If we find a maximum version that requires this, the test would be __HP_aCC <= 35500 for A.03.55 */
+#  define SWIGTEMPLATEDISAMBIGUATOR template
+# else
+#  define SWIGTEMPLATEDISAMBIGUATOR
+# endif
+#endif
+
+/* inline attribute */
+#ifndef SWIGINLINE
+# if defined(__cplusplus) || (defined(__GNUC__) && !defined(__STRICT_ANSI__))
+#   define SWIGINLINE inline
+# else
+#   define SWIGINLINE
+# endif
+#endif
+
+/* attribute recognised by some compilers to avoid 'unused' warnings */
+#ifndef SWIGUNUSED
+# if defined(__GNUC__)
+#   if !(defined(__cplusplus)) || (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
+#     define SWIGUNUSED __attribute__ ((__unused__))
+#   else
+#     define SWIGUNUSED
+#   endif
+# elif defined(__ICC)
+#   define SWIGUNUSED __attribute__ ((__unused__))
+# else
+#   define SWIGUNUSED
+# endif
+#endif
+
+#ifndef SWIG_MSC_UNSUPPRESS_4505
+# if defined(_MSC_VER)
+#   pragma warning(disable : 4505) /* unreferenced local function has been removed */
+# endif
+#endif
+
+#ifndef SWIGUNUSEDPARM
+# ifdef __cplusplus
+#   define SWIGUNUSEDPARM(p)
+# else
+#   define SWIGUNUSEDPARM(p) p SWIGUNUSED
+# endif
+#endif
+
+/* internal SWIG method */
+#ifndef SWIGINTERN
+# define SWIGINTERN static SWIGUNUSED
+#endif
+
+/* internal inline SWIG method */
+#ifndef SWIGINTERNINLINE
+# define SWIGINTERNINLINE SWIGINTERN SWIGINLINE
+#endif
+
+/* exporting methods */
+#if defined(__GNUC__)
+#  if (__GNUC__ >= 4) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
+#    ifndef GCC_HASCLASSVISIBILITY
+#      define GCC_HASCLASSVISIBILITY
+#    endif
+#  endif
+#endif
+
+#ifndef SWIGEXPORT
+# if defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
+#   if defined(STATIC_LINKED)
+#     define SWIGEXPORT
+#   else
+#     define SWIGEXPORT __declspec(dllexport)
+#   endif
+# else
+#   if defined(__GNUC__) && defined(GCC_HASCLASSVISIBILITY)
+#     define SWIGEXPORT __attribute__ ((visibility("default")))
+#   else
+#     define SWIGEXPORT
+#   endif
+# endif
+#endif
+
+/* calling conventions for Windows */
+#ifndef SWIGSTDCALL
+# if defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
+#   define SWIGSTDCALL __stdcall
+# else
+#   define SWIGSTDCALL
+# endif
+#endif
+
+/* Deal with Microsoft's attempt at deprecating C standard runtime functions */
+#if !defined(SWIG_NO_CRT_SECURE_NO_DEPRECATE) && defined(_MSC_VER) && !defined(_CRT_SECURE_NO_DEPRECATE)
+# define _CRT_SECURE_NO_DEPRECATE
+#endif
+
+/* Deal with Microsoft's attempt at deprecating methods in the standard C++ library */
+#if !defined(SWIG_NO_SCL_SECURE_NO_DEPRECATE) && defined(_MSC_VER) && !defined(_SCL_SECURE_NO_DEPRECATE)
+# define _SCL_SECURE_NO_DEPRECATE
+#endif
+
+/* Deal with Apple's deprecated 'AssertMacros.h' from Carbon-framework */
+#if defined(__APPLE__) && !defined(__ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES)
+# define __ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES 0
+#endif
+
+/* Intel's compiler complains if a variable which was never initialised is
+ * cast to void, which is a common idiom which we use to indicate that we
+ * are aware a variable isn't used.  So we just silence that warning.
+ * See: https://github.com/swig/swig/issues/192 for more discussion.
+ */
+#ifdef __INTEL_COMPILER
+# pragma warning disable 592
+#endif
+
+
+#if defined(__GNUC__) && defined(_WIN32) && !defined(SWIG_PYTHON_NO_HYPOT_WORKAROUND)
+/* Workaround for '::hypot' has not been declared', see https://bugs.python.org/issue11566 */
+# include <math.h>
+#endif
+
+#if defined(_DEBUG) && defined(SWIG_PYTHON_INTERPRETER_NO_DEBUG)
+/* Use debug wrappers with the Python release dll */
+# undef _DEBUG
+# include <Python.h>
+# define _DEBUG 1
+#else
+# include <Python.h>
+#endif
+
+/* -----------------------------------------------------------------------------
+ * swigrun.swg
+ *
+ * This file contains generic C API SWIG runtime support for pointer
+ * type checking.
+ * ----------------------------------------------------------------------------- */
+
+/* This should only be incremented when either the layout of swig_type_info changes,
+   or for whatever reason, the runtime changes incompatibly */
+#define SWIG_RUNTIME_VERSION "4"
+
+/* define SWIG_TYPE_TABLE_NAME as "SWIG_TYPE_TABLE" */
+#ifdef SWIG_TYPE_TABLE
+# define SWIG_QUOTE_STRING(x) #x
+# define SWIG_EXPAND_AND_QUOTE_STRING(x) SWIG_QUOTE_STRING(x)
+# define SWIG_TYPE_TABLE_NAME SWIG_EXPAND_AND_QUOTE_STRING(SWIG_TYPE_TABLE)
+#else
+# define SWIG_TYPE_TABLE_NAME
+#endif
+
+/*
+  You can use the SWIGRUNTIME and SWIGRUNTIMEINLINE macros for
+  creating a static or dynamic library from the SWIG runtime code.
+  In 99.9% of the cases, SWIG just needs to declare them as 'static'.
+
+  But only do this if strictly necessary, ie, if you have problems
+  with your compiler or suchlike.
+*/
+
+#ifndef SWIGRUNTIME
+# define SWIGRUNTIME SWIGINTERN
+#endif
+
+#ifndef SWIGRUNTIMEINLINE
+# define SWIGRUNTIMEINLINE SWIGRUNTIME SWIGINLINE
+#endif
+
+/*  Generic buffer size */
+#ifndef SWIG_BUFFER_SIZE
+# define SWIG_BUFFER_SIZE 1024
+#endif
+
+/* Flags for pointer conversions */
+#define SWIG_POINTER_DISOWN        0x1
+#define SWIG_CAST_NEW_MEMORY       0x2
+#define SWIG_POINTER_NO_NULL       0x4
+
+/* Flags for new pointer objects */
+#define SWIG_POINTER_OWN           0x1
+
+
+/*
+   Flags/methods for returning states.
+
+   The SWIG conversion methods, as ConvertPtr, return an integer
+   that tells if the conversion was successful or not. And if not,
+   an error code can be returned (see swigerrors.swg for the codes).
+
+   Use the following macros/flags to set or process the returning
+   states.
+
+   In old versions of SWIG, code such as the following was usually written:
+
+     if (SWIG_ConvertPtr(obj,vptr,ty.flags) != -1) {
+       // success code
+     } else {
+       //fail code
+     }
+
+   Now you can be more explicit:
+
+    int res = SWIG_ConvertPtr(obj,vptr,ty.flags);
+    if (SWIG_IsOK(res)) {
+      // success code
+    } else {
+      // fail code
+    }
+
+   which is the same really, but now you can also do
+
+    Type *ptr;
+    int res = SWIG_ConvertPtr(obj,(void **)(&ptr),ty.flags);
+    if (SWIG_IsOK(res)) {
+      // success code
+      if (SWIG_IsNewObj(res) {
+        ...
+	delete *ptr;
+      } else {
+        ...
+      }
+    } else {
+      // fail code
+    }
+
+   I.e., now SWIG_ConvertPtr can return new objects and you can
+   identify the case and take care of the deallocation. Of course that
+   also requires SWIG_ConvertPtr to return new result values, such as
+
+      int SWIG_ConvertPtr(obj, ptr,...) {
+        if (<obj is ok>) {
+          if (<need new object>) {
+            *ptr = <ptr to new allocated object>;
+            return SWIG_NEWOBJ;
+          } else {
+            *ptr = <ptr to old object>;
+            return SWIG_OLDOBJ;
+          }
+        } else {
+          return SWIG_BADOBJ;
+        }
+      }
+
+   Of course, returning the plain '0(success)/-1(fail)' still works, but you can be
+   more explicit by returning SWIG_BADOBJ, SWIG_ERROR or any of the
+   SWIG errors code.
+
+   Finally, if the SWIG_CASTRANK_MODE is enabled, the result code
+   allows to return the 'cast rank', for example, if you have this
+
+       int food(double)
+       int fooi(int);
+
+   and you call
+
+      food(1)   // cast rank '1'  (1 -> 1.0)
+      fooi(1)   // cast rank '0'
+
+   just use the SWIG_AddCast()/SWIG_CheckState()
+*/
+
+#define SWIG_OK                    (0)
+#define SWIG_ERROR                 (-1)
+#define SWIG_IsOK(r)               (r >= 0)
+#define SWIG_ArgError(r)           ((r != SWIG_ERROR) ? r : SWIG_TypeError)
+
+/* The CastRankLimit says how many bits are used for the cast rank */
+#define SWIG_CASTRANKLIMIT         (1 << 8)
+/* The NewMask denotes the object was created (using new/malloc) */
+#define SWIG_NEWOBJMASK            (SWIG_CASTRANKLIMIT  << 1)
+/* The TmpMask is for in/out typemaps that use temporal objects */
+#define SWIG_TMPOBJMASK            (SWIG_NEWOBJMASK << 1)
+/* Simple returning values */
+#define SWIG_BADOBJ                (SWIG_ERROR)
+#define SWIG_OLDOBJ                (SWIG_OK)
+#define SWIG_NEWOBJ                (SWIG_OK | SWIG_NEWOBJMASK)
+#define SWIG_TMPOBJ                (SWIG_OK | SWIG_TMPOBJMASK)
+/* Check, add and del mask methods */
+#define SWIG_AddNewMask(r)         (SWIG_IsOK(r) ? (r | SWIG_NEWOBJMASK) : r)
+#define SWIG_DelNewMask(r)         (SWIG_IsOK(r) ? (r & ~SWIG_NEWOBJMASK) : r)
+#define SWIG_IsNewObj(r)           (SWIG_IsOK(r) && (r & SWIG_NEWOBJMASK))
+#define SWIG_AddTmpMask(r)         (SWIG_IsOK(r) ? (r | SWIG_TMPOBJMASK) : r)
+#define SWIG_DelTmpMask(r)         (SWIG_IsOK(r) ? (r & ~SWIG_TMPOBJMASK) : r)
+#define SWIG_IsTmpObj(r)           (SWIG_IsOK(r) && (r & SWIG_TMPOBJMASK))
+
+/* Cast-Rank Mode */
+#if defined(SWIG_CASTRANK_MODE)
+#  ifndef SWIG_TypeRank
+#    define SWIG_TypeRank             unsigned long
+#  endif
+#  ifndef SWIG_MAXCASTRANK            /* Default cast allowed */
+#    define SWIG_MAXCASTRANK          (2)
+#  endif
+#  define SWIG_CASTRANKMASK          ((SWIG_CASTRANKLIMIT) -1)
+#  define SWIG_CastRank(r)           (r & SWIG_CASTRANKMASK)
+SWIGINTERNINLINE int SWIG_AddCast(int r) {
+  return SWIG_IsOK(r) ? ((SWIG_CastRank(r) < SWIG_MAXCASTRANK) ? (r + 1) : SWIG_ERROR) : r;
+}
+SWIGINTERNINLINE int SWIG_CheckState(int r) {
+  return SWIG_IsOK(r) ? SWIG_CastRank(r) + 1 : 0;
+}
+#else /* no cast-rank mode */
+#  define SWIG_AddCast(r) (r)
+#  define SWIG_CheckState(r) (SWIG_IsOK(r) ? 1 : 0)
+#endif
+
+
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void *(*swig_converter_func)(void *, int *);
+typedef struct swig_type_info *(*swig_dycast_func)(void **);
+
+/* Structure to store information on one type */
+typedef struct swig_type_info {
+  const char             *name;			/* mangled name of this type */
+  const char             *str;			/* human readable name of this type */
+  swig_dycast_func        dcast;		/* dynamic cast function down a hierarchy */
+  struct swig_cast_info  *cast;			/* linked list of types that can cast into this type */
+  void                   *clientdata;		/* language specific type data */
+  int                    owndata;		/* flag if the structure owns the clientdata */
+} swig_type_info;
+
+/* Structure to store a type and conversion function used for casting */
+typedef struct swig_cast_info {
+  swig_type_info         *type;			/* pointer to type that is equivalent to this type */
+  swig_converter_func     converter;		/* function to cast the void pointers */
+  struct swig_cast_info  *next;			/* pointer to next cast in linked list */
+  struct swig_cast_info  *prev;			/* pointer to the previous cast */
+} swig_cast_info;
+
+/* Structure used to store module information
+ * Each module generates one structure like this, and the runtime collects
+ * all of these structures and stores them in a circularly linked list.*/
+typedef struct swig_module_info {
+  swig_type_info         **types;		/* Array of pointers to swig_type_info structures that are in this module */
+  size_t                 size;		        /* Number of types in this module */
+  struct swig_module_info *next;		/* Pointer to next element in circularly linked list */
+  swig_type_info         **type_initial;	/* Array of initially generated type structures */
+  swig_cast_info         **cast_initial;	/* Array of initially generated casting structures */
+  void                    *clientdata;		/* Language specific module data */
+} swig_module_info;
+
+/*
+  Compare two type names skipping the space characters, therefore
+  "char*" == "char *" and "Class<int>" == "Class<int >", etc.
+
+  Return 0 when the two name types are equivalent, as in
+  strncmp, but skipping ' '.
+*/
+SWIGRUNTIME int
+SWIG_TypeNameComp(const char *f1, const char *l1,
+		  const char *f2, const char *l2) {
+  for (;(f1 != l1) && (f2 != l2); ++f1, ++f2) {
+    while ((*f1 == ' ') && (f1 != l1)) ++f1;
+    while ((*f2 == ' ') && (f2 != l2)) ++f2;
+    if (*f1 != *f2) return (*f1 > *f2) ? 1 : -1;
+  }
+  return (int)((l1 - f1) - (l2 - f2));
+}
+
+/*
+  Check type equivalence in a name list like <name1>|<name2>|...
+  Return 0 if equal, -1 if nb < tb, 1 if nb > tb
+*/
+SWIGRUNTIME int
+SWIG_TypeCmp(const char *nb, const char *tb) {
+  int equiv = 1;
+  const char* te = tb + strlen(tb);
+  const char* ne = nb;
+  while (equiv != 0 && *ne) {
+    for (nb = ne; *ne; ++ne) {
+      if (*ne == '|') break;
+    }
+    equiv = SWIG_TypeNameComp(nb, ne, tb, te);
+    if (*ne) ++ne;
+  }
+  return equiv;
+}
+
+/*
+  Check type equivalence in a name list like <name1>|<name2>|...
+  Return 0 if not equal, 1 if equal
+*/
+SWIGRUNTIME int
+SWIG_TypeEquiv(const char *nb, const char *tb) {
+  return SWIG_TypeCmp(nb, tb) == 0 ? 1 : 0;
+}
+
+/*
+  Check the typename
+*/
+SWIGRUNTIME swig_cast_info *
+SWIG_TypeCheck(const char *c, swig_type_info *ty) {
+  if (ty) {
+    swig_cast_info *iter = ty->cast;
+    while (iter) {
+      if (strcmp(iter->type->name, c) == 0) {
+        if (iter == ty->cast)
+          return iter;
+        /* Move iter to the top of the linked list */
+        iter->prev->next = iter->next;
+        if (iter->next)
+          iter->next->prev = iter->prev;
+        iter->next = ty->cast;
+        iter->prev = 0;
+        if (ty->cast) ty->cast->prev = iter;
+        ty->cast = iter;
+        return iter;
+      }
+      iter = iter->next;
+    }
+  }
+  return 0;
+}
+
+/*
+  Identical to SWIG_TypeCheck, except strcmp is replaced with a pointer comparison
+*/
+SWIGRUNTIME swig_cast_info *
+SWIG_TypeCheckStruct(swig_type_info *from, swig_type_info *ty) {
+  if (ty) {
+    swig_cast_info *iter = ty->cast;
+    while (iter) {
+      if (iter->type == from) {
+        if (iter == ty->cast)
+          return iter;
+        /* Move iter to the top of the linked list */
+        iter->prev->next = iter->next;
+        if (iter->next)
+          iter->next->prev = iter->prev;
+        iter->next = ty->cast;
+        iter->prev = 0;
+        if (ty->cast) ty->cast->prev = iter;
+        ty->cast = iter;
+        return iter;
+      }
+      iter = iter->next;
+    }
+  }
+  return 0;
+}
+
+/*
+  Cast a pointer up an inheritance hierarchy
+*/
+SWIGRUNTIMEINLINE void *
+SWIG_TypeCast(swig_cast_info *ty, void *ptr, int *newmemory) {
+  return ((!ty) || (!ty->converter)) ? ptr : (*ty->converter)(ptr, newmemory);
+}
+
+/*
+   Dynamic pointer casting. Down an inheritance hierarchy
+*/
+SWIGRUNTIME swig_type_info *
+SWIG_TypeDynamicCast(swig_type_info *ty, void **ptr) {
+  swig_type_info *lastty = ty;
+  if (!ty || !ty->dcast) return ty;
+  while (ty && (ty->dcast)) {
+    ty = (*ty->dcast)(ptr);
+    if (ty) lastty = ty;
+  }
+  return lastty;
+}
+
+/*
+  Return the name associated with this type
+*/
+SWIGRUNTIMEINLINE const char *
+SWIG_TypeName(const swig_type_info *ty) {
+  return ty->name;
+}
+
+/*
+  Return the pretty name associated with this type,
+  that is an unmangled type name in a form presentable to the user.
+*/
+SWIGRUNTIME const char *
+SWIG_TypePrettyName(const swig_type_info *type) {
+  /* The "str" field contains the equivalent pretty names of the
+     type, separated by vertical-bar characters.  We choose
+     to print the last name, as it is often (?) the most
+     specific. */
+  if (!type) return NULL;
+  if (type->str != NULL) {
+    const char *last_name = type->str;
+    const char *s;
+    for (s = type->str; *s; s++)
+      if (*s == '|') last_name = s+1;
+    return last_name;
+  }
+  else
+    return type->name;
+}
+
+/*
+   Set the clientdata field for a type
+*/
+SWIGRUNTIME void
+SWIG_TypeClientData(swig_type_info *ti, void *clientdata) {
+  swig_cast_info *cast = ti->cast;
+  /* if (ti->clientdata == clientdata) return; */
+  ti->clientdata = clientdata;
+
+  while (cast) {
+    if (!cast->converter) {
+      swig_type_info *tc = cast->type;
+      if (!tc->clientdata) {
+	SWIG_TypeClientData(tc, clientdata);
+      }
+    }
+    cast = cast->next;
+  }
+}
+SWIGRUNTIME void
+SWIG_TypeNewClientData(swig_type_info *ti, void *clientdata) {
+  SWIG_TypeClientData(ti, clientdata);
+  ti->owndata = 1;
+}
+
+/*
+  Search for a swig_type_info structure only by mangled name
+  Search is a O(log #types)
+
+  We start searching at module start, and finish searching when start == end.
+  Note: if start == end at the beginning of the function, we go all the way around
+  the circular list.
+*/
+SWIGRUNTIME swig_type_info *
+SWIG_MangledTypeQueryModule(swig_module_info *start,
+                            swig_module_info *end,
+		            const char *name) {
+  swig_module_info *iter = start;
+  do {
+    if (iter->size) {
+      size_t l = 0;
+      size_t r = iter->size - 1;
+      do {
+	/* since l+r >= 0, we can (>> 1) instead (/ 2) */
+	size_t i = (l + r) >> 1;
+	const char *iname = iter->types[i]->name;
+	if (iname) {
+	  int compare = strcmp(name, iname);
+	  if (compare == 0) {
+	    return iter->types[i];
+	  } else if (compare < 0) {
+	    if (i) {
+	      r = i - 1;
+	    } else {
+	      break;
+	    }
+	  } else if (compare > 0) {
+	    l = i + 1;
+	  }
+	} else {
+	  break; /* should never happen */
+	}
+      } while (l <= r);
+    }
+    iter = iter->next;
+  } while (iter != end);
+  return 0;
+}
+
+/*
+  Search for a swig_type_info structure for either a mangled name or a human readable name.
+  It first searches the mangled names of the types, which is a O(log #types)
+  If a type is not found it then searches the human readable names, which is O(#types).
+
+  We start searching at module start, and finish searching when start == end.
+  Note: if start == end at the beginning of the function, we go all the way around
+  the circular list.
+*/
+SWIGRUNTIME swig_type_info *
+SWIG_TypeQueryModule(swig_module_info *start,
+                     swig_module_info *end,
+		     const char *name) {
+  /* STEP 1: Search the name field using binary search */
+  swig_type_info *ret = SWIG_MangledTypeQueryModule(start, end, name);
+  if (ret) {
+    return ret;
+  } else {
+    /* STEP 2: If the type hasn't been found, do a complete search
+       of the str field (the human readable name) */
+    swig_module_info *iter = start;
+    do {
+      size_t i = 0;
+      for (; i < iter->size; ++i) {
+	if (iter->types[i]->str && (SWIG_TypeEquiv(iter->types[i]->str, name)))
+	  return iter->types[i];
+      }
+      iter = iter->next;
+    } while (iter != end);
+  }
+
+  /* neither found a match */
+  return 0;
+}
+
+/*
+   Pack binary data into a string
+*/
+SWIGRUNTIME char *
+SWIG_PackData(char *c, void *ptr, size_t sz) {
+  static const char hex[17] = "0123456789abcdef";
+  const unsigned char *u = (unsigned char *) ptr;
+  const unsigned char *eu =  u + sz;
+  for (; u != eu; ++u) {
+    unsigned char uu = *u;
+    *(c++) = hex[(uu & 0xf0) >> 4];
+    *(c++) = hex[uu & 0xf];
+  }
+  return c;
+}
+
+/*
+   Unpack binary data from a string
+*/
+SWIGRUNTIME const char *
+SWIG_UnpackData(const char *c, void *ptr, size_t sz) {
+  unsigned char *u = (unsigned char *) ptr;
+  const unsigned char *eu = u + sz;
+  for (; u != eu; ++u) {
+    char d = *(c++);
+    unsigned char uu;
+    if ((d >= '0') && (d <= '9'))
+      uu = (unsigned char)((d - '0') << 4);
+    else if ((d >= 'a') && (d <= 'f'))
+      uu = (unsigned char)((d - ('a'-10)) << 4);
+    else
+      return (char *) 0;
+    d = *(c++);
+    if ((d >= '0') && (d <= '9'))
+      uu |= (unsigned char)(d - '0');
+    else if ((d >= 'a') && (d <= 'f'))
+      uu |= (unsigned char)(d - ('a'-10));
+    else
+      return (char *) 0;
+    *u = uu;
+  }
+  return c;
+}
+
+/*
+   Pack 'void *' into a string buffer.
+*/
+SWIGRUNTIME char *
+SWIG_PackVoidPtr(char *buff, void *ptr, const char *name, size_t bsz) {
+  char *r = buff;
+  if ((2*sizeof(void *) + 2) > bsz) return 0;
+  *(r++) = '_';
+  r = SWIG_PackData(r,&ptr,sizeof(void *));
+  if (strlen(name) + 1 > (bsz - (r - buff))) return 0;
+  strcpy(r,name);
+  return buff;
+}
+
+SWIGRUNTIME const char *
+SWIG_UnpackVoidPtr(const char *c, void **ptr, const char *name) {
+  if (*c != '_') {
+    if (strcmp(c,"NULL") == 0) {
+      *ptr = (void *) 0;
+      return name;
+    } else {
+      return 0;
+    }
+  }
+  return SWIG_UnpackData(++c,ptr,sizeof(void *));
+}
+
+SWIGRUNTIME char *
+SWIG_PackDataName(char *buff, void *ptr, size_t sz, const char *name, size_t bsz) {
+  char *r = buff;
+  size_t lname = (name ? strlen(name) : 0);
+  if ((2*sz + 2 + lname) > bsz) return 0;
+  *(r++) = '_';
+  r = SWIG_PackData(r,ptr,sz);
+  if (lname) {
+    strncpy(r,name,lname+1);
+  } else {
+    *r = 0;
+  }
+  return buff;
+}
+
+SWIGRUNTIME const char *
+SWIG_UnpackDataName(const char *c, void *ptr, size_t sz, const char *name) {
+  if (*c != '_') {
+    if (strcmp(c,"NULL") == 0) {
+      memset(ptr,0,sz);
+      return name;
+    } else {
+      return 0;
+    }
+  }
+  return SWIG_UnpackData(++c,ptr,sz);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+/*  Errors in SWIG */
+#define  SWIG_UnknownError    	   -1
+#define  SWIG_IOError        	   -2
+#define  SWIG_RuntimeError   	   -3
+#define  SWIG_IndexError     	   -4
+#define  SWIG_TypeError      	   -5
+#define  SWIG_DivisionByZero 	   -6
+#define  SWIG_OverflowError  	   -7
+#define  SWIG_SyntaxError    	   -8
+#define  SWIG_ValueError     	   -9
+#define  SWIG_SystemError    	   -10
+#define  SWIG_AttributeError 	   -11
+#define  SWIG_MemoryError    	   -12
+#define  SWIG_NullReferenceError   -13
+
+
+
+/* Compatibility macros for Python 3 */
+#if PY_VERSION_HEX >= 0x03000000
+
+#define PyClass_Check(obj) PyObject_IsInstance(obj, (PyObject *)&PyType_Type)
+#define PyInt_Check(x) PyLong_Check(x)
+#define PyInt_AsLong(x) PyLong_AsLong(x)
+#define PyInt_FromLong(x) PyLong_FromLong(x)
+#define PyInt_FromSize_t(x) PyLong_FromSize_t(x)
+#define PyString_Check(name) PyBytes_Check(name)
+#define PyString_FromString(x) PyUnicode_FromString(x)
+#define PyString_Format(fmt, args)  PyUnicode_Format(fmt, args)
+#define PyString_AsString(str) PyBytes_AsString(str)
+#define PyString_Size(str) PyBytes_Size(str)	
+#define PyString_InternFromString(key) PyUnicode_InternFromString(key)
+#define Py_TPFLAGS_HAVE_CLASS Py_TPFLAGS_BASETYPE
+#define PyString_AS_STRING(x) PyUnicode_AS_STRING(x)
+#define _PyLong_FromSsize_t(x) PyLong_FromSsize_t(x)
+
+#endif
+
+#ifndef Py_TYPE
+#  define Py_TYPE(op) ((op)->ob_type)
+#endif
+
+/* SWIG APIs for compatibility of both Python 2 & 3 */
+
+#if PY_VERSION_HEX >= 0x03000000
+#  define SWIG_Python_str_FromFormat PyUnicode_FromFormat
+#else
+#  define SWIG_Python_str_FromFormat PyString_FromFormat
+#endif
+
+
+/* Warning: This function will allocate a new string in Python 3,
+ * so please call SWIG_Python_str_DelForPy3(x) to free the space.
+ */
+SWIGINTERN char*
+SWIG_Python_str_AsChar(PyObject *str)
+{
+#if PY_VERSION_HEX >= 0x03030000
+  return (char *)PyUnicode_AsUTF8(str);
+#elif PY_VERSION_HEX >= 0x03000000
+  char *newstr = 0;
+  str = PyUnicode_AsUTF8String(str);
+  if (str) {
+    char *cstr;
+    Py_ssize_t len;
+    if (PyBytes_AsStringAndSize(str, &cstr, &len) != -1) {
+      newstr = (char *) malloc(len+1);
+      if (newstr)
+        memcpy(newstr, cstr, len+1);
+    }
+    Py_XDECREF(str);
+  }
+  return newstr;
+#else
+  return PyString_AsString(str);
+#endif
+}
+
+#if PY_VERSION_HEX >= 0x03030000 || PY_VERSION_HEX < 0x03000000
+#  define SWIG_Python_str_DelForPy3(x)
+#else
+#  define SWIG_Python_str_DelForPy3(x) free( (void*) (x) )
+#endif
+
+
+SWIGINTERN PyObject*
+SWIG_Python_str_FromChar(const char *c)
+{
+#if PY_VERSION_HEX >= 0x03000000
+  return PyUnicode_FromString(c); 
+#else
+  return PyString_FromString(c);
+#endif
+}
+
+#ifndef PyObject_DEL
+# define PyObject_DEL PyObject_Del
+#endif
+
+// SWIGPY_USE_CAPSULE is no longer used within SWIG itself, but some user
+// interface files check for it.
+# define SWIGPY_USE_CAPSULE
+# define SWIGPY_CAPSULE_NAME ("swig_runtime_data" SWIG_RUNTIME_VERSION ".type_pointer_capsule" SWIG_TYPE_TABLE_NAME)
+
+#if PY_VERSION_HEX < 0x03020000
+#define PyDescr_TYPE(x) (((PyDescrObject *)(x))->d_type)
+#define PyDescr_NAME(x) (((PyDescrObject *)(x))->d_name)
+#define Py_hash_t long
+#endif
+
+/* -----------------------------------------------------------------------------
+ * error manipulation
+ * ----------------------------------------------------------------------------- */
+
+SWIGRUNTIME PyObject*
+SWIG_Python_ErrorType(int code) {
+  PyObject* type = 0;
+  switch(code) {
+  case SWIG_MemoryError:
+    type = PyExc_MemoryError;
+    break;
+  case SWIG_IOError:
+    type = PyExc_IOError;
+    break;
+  case SWIG_RuntimeError:
+    type = PyExc_RuntimeError;
+    break;
+  case SWIG_IndexError:
+    type = PyExc_IndexError;
+    break;
+  case SWIG_TypeError:
+    type = PyExc_TypeError;
+    break;
+  case SWIG_DivisionByZero:
+    type = PyExc_ZeroDivisionError;
+    break;
+  case SWIG_OverflowError:
+    type = PyExc_OverflowError;
+    break;
+  case SWIG_SyntaxError:
+    type = PyExc_SyntaxError;
+    break;
+  case SWIG_ValueError:
+    type = PyExc_ValueError;
+    break;
+  case SWIG_SystemError:
+    type = PyExc_SystemError;
+    break;
+  case SWIG_AttributeError:
+    type = PyExc_AttributeError;
+    break;
+  default:
+    type = PyExc_RuntimeError;
+  }
+  return type;
+}
+
+
+SWIGRUNTIME void
+SWIG_Python_AddErrorMsg(const char* mesg)
+{
+  PyObject *type = 0;
+  PyObject *value = 0;
+  PyObject *traceback = 0;
+
+  if (PyErr_Occurred())
+    PyErr_Fetch(&type, &value, &traceback);
+  if (value) {
+    PyObject *old_str = PyObject_Str(value);
+    const char *tmp = SWIG_Python_str_AsChar(old_str);
+    PyErr_Clear();
+    Py_XINCREF(type);
+    if (tmp)
+      PyErr_Format(type, "%s %s", tmp, mesg);
+    else
+      PyErr_Format(type, "%s", mesg);
+    SWIG_Python_str_DelForPy3(tmp);
+    Py_DECREF(old_str);
+    Py_DECREF(value);
+  } else {
+    PyErr_SetString(PyExc_RuntimeError, mesg);
+  }
+}
+
+SWIGRUNTIME int
+SWIG_Python_TypeErrorOccurred(PyObject *obj)
+{
+  PyObject *error;
+  if (obj)
+    return 0;
+  error = PyErr_Occurred();
+  return error && PyErr_GivenExceptionMatches(error, PyExc_TypeError);
+}
+
+SWIGRUNTIME void
+SWIG_Python_RaiseOrModifyTypeError(const char *message)
+{
+  if (SWIG_Python_TypeErrorOccurred(NULL)) {
+    /* Use existing TypeError to preserve stacktrace and enhance with given message */
+    PyObject *newvalue;
+    PyObject *type = NULL, *value = NULL, *traceback = NULL;
+    PyErr_Fetch(&type, &value, &traceback);
+#if PY_VERSION_HEX >= 0x03000000
+    newvalue = PyUnicode_FromFormat("%S\nAdditional information:\n%s", value, message);
+#else
+    newvalue = PyString_FromFormat("%s\nAdditional information:\n%s", PyString_AsString(value), message);
+#endif
+    Py_XDECREF(value);
+    PyErr_Restore(type, newvalue, traceback);
+  } else {
+    /* Raise TypeError using given message */
+    PyErr_SetString(PyExc_TypeError, message);
+  }
+}
+
+#if defined(SWIG_PYTHON_NO_THREADS)
+#  if defined(SWIG_PYTHON_THREADS)
+#    undef SWIG_PYTHON_THREADS
+#  endif
+#endif
+#if defined(SWIG_PYTHON_THREADS) /* Threading support is enabled */
+#  if !defined(SWIG_PYTHON_USE_GIL) && !defined(SWIG_PYTHON_NO_USE_GIL)
+#    define SWIG_PYTHON_USE_GIL
+#  endif
+#  if defined(SWIG_PYTHON_USE_GIL) /* Use PyGILState threads calls */
+#    ifndef SWIG_PYTHON_INITIALIZE_THREADS
+#     define SWIG_PYTHON_INITIALIZE_THREADS  PyEval_InitThreads() 
+#    endif
+#    ifdef __cplusplus /* C++ code */
+       class SWIG_Python_Thread_Block {
+         bool status;
+         PyGILState_STATE state;
+       public:
+         void end() { if (status) { PyGILState_Release(state); status = false;} }
+         SWIG_Python_Thread_Block() : status(true), state(PyGILState_Ensure()) {}
+         ~SWIG_Python_Thread_Block() { end(); }
+       };
+       class SWIG_Python_Thread_Allow {
+         bool status;
+         PyThreadState *save;
+       public:
+         void end() { if (status) { PyEval_RestoreThread(save); status = false; }}
+         SWIG_Python_Thread_Allow() : status(true), save(PyEval_SaveThread()) {}
+         ~SWIG_Python_Thread_Allow() { end(); }
+       };
+#      define SWIG_PYTHON_THREAD_BEGIN_BLOCK   SWIG_Python_Thread_Block _swig_thread_block
+#      define SWIG_PYTHON_THREAD_END_BLOCK     _swig_thread_block.end()
+#      define SWIG_PYTHON_THREAD_BEGIN_ALLOW   SWIG_Python_Thread_Allow _swig_thread_allow
+#      define SWIG_PYTHON_THREAD_END_ALLOW     _swig_thread_allow.end()
+#    else /* C code */
+#      define SWIG_PYTHON_THREAD_BEGIN_BLOCK   PyGILState_STATE _swig_thread_block = PyGILState_Ensure()
+#      define SWIG_PYTHON_THREAD_END_BLOCK     PyGILState_Release(_swig_thread_block)
+#      define SWIG_PYTHON_THREAD_BEGIN_ALLOW   PyThreadState *_swig_thread_allow = PyEval_SaveThread()
+#      define SWIG_PYTHON_THREAD_END_ALLOW     PyEval_RestoreThread(_swig_thread_allow)
+#    endif
+#  else /* Old thread way, not implemented, user must provide it */
+#    if !defined(SWIG_PYTHON_INITIALIZE_THREADS)
+#      define SWIG_PYTHON_INITIALIZE_THREADS
+#    endif
+#    if !defined(SWIG_PYTHON_THREAD_BEGIN_BLOCK)
+#      define SWIG_PYTHON_THREAD_BEGIN_BLOCK
+#    endif
+#    if !defined(SWIG_PYTHON_THREAD_END_BLOCK)
+#      define SWIG_PYTHON_THREAD_END_BLOCK
+#    endif
+#    if !defined(SWIG_PYTHON_THREAD_BEGIN_ALLOW)
+#      define SWIG_PYTHON_THREAD_BEGIN_ALLOW
+#    endif
+#    if !defined(SWIG_PYTHON_THREAD_END_ALLOW)
+#      define SWIG_PYTHON_THREAD_END_ALLOW
+#    endif
+#  endif
+#else /* No thread support */
+#  define SWIG_PYTHON_INITIALIZE_THREADS
+#  define SWIG_PYTHON_THREAD_BEGIN_BLOCK
+#  define SWIG_PYTHON_THREAD_END_BLOCK
+#  define SWIG_PYTHON_THREAD_BEGIN_ALLOW
+#  define SWIG_PYTHON_THREAD_END_ALLOW
+#endif
+
+/* -----------------------------------------------------------------------------
+ * Python API portion that goes into the runtime
+ * ----------------------------------------------------------------------------- */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* -----------------------------------------------------------------------------
+ * Constant declarations
+ * ----------------------------------------------------------------------------- */
+
+/* Constant Types */
+#define SWIG_PY_POINTER 4
+#define SWIG_PY_BINARY  5
+
+/* Constant information structure */
+typedef struct swig_const_info {
+  int type;
+  const char *name;
+  long lvalue;
+  double dvalue;
+  void   *pvalue;
+  swig_type_info **ptype;
+} swig_const_info;
+
+#ifdef __cplusplus
+}
+#endif
+
+
+/* -----------------------------------------------------------------------------
+ * pyrun.swg
+ *
+ * This file contains the runtime support for Python modules
+ * and includes code for managing global variables and pointer
+ * type checking.
+ *
+ * ----------------------------------------------------------------------------- */
+
+#if PY_VERSION_HEX < 0x02070000 /* 2.7.0 */
+# error "This version of SWIG only supports Python >= 2.7"
+#endif
+
+#if PY_VERSION_HEX >= 0x03000000 && PY_VERSION_HEX < 0x03020000
+# error "This version of SWIG only supports Python 3 >= 3.2"
+#endif
+
+/* Common SWIG API */
+
+/* for raw pointers */
+#define SWIG_Python_ConvertPtr(obj, pptr, type, flags)  SWIG_Python_ConvertPtrAndOwn(obj, pptr, type, flags, 0)
+#define SWIG_ConvertPtr(obj, pptr, type, flags)         SWIG_Python_ConvertPtr(obj, pptr, type, flags)
+#define SWIG_ConvertPtrAndOwn(obj,pptr,type,flags,own)  SWIG_Python_ConvertPtrAndOwn(obj, pptr, type, flags, own)
+
+#ifdef SWIGPYTHON_BUILTIN
+#define SWIG_NewPointerObj(ptr, type, flags)            SWIG_Python_NewPointerObj(self, ptr, type, flags)
+#else
+#define SWIG_NewPointerObj(ptr, type, flags)            SWIG_Python_NewPointerObj(NULL, ptr, type, flags)
+#endif
+
+#define SWIG_InternalNewPointerObj(ptr, type, flags)	SWIG_Python_NewPointerObj(NULL, ptr, type, flags)
+
+#define SWIG_CheckImplicit(ty)                          SWIG_Python_CheckImplicit(ty) 
+#define SWIG_AcquirePtr(ptr, src)                       SWIG_Python_AcquirePtr(ptr, src)
+#define swig_owntype                                    int
+
+/* for raw packed data */
+#define SWIG_ConvertPacked(obj, ptr, sz, ty)            SWIG_Python_ConvertPacked(obj, ptr, sz, ty)
+#define SWIG_NewPackedObj(ptr, sz, type)                SWIG_Python_NewPackedObj(ptr, sz, type)
+
+/* for class or struct pointers */
+#define SWIG_ConvertInstance(obj, pptr, type, flags)    SWIG_ConvertPtr(obj, pptr, type, flags)
+#define SWIG_NewInstanceObj(ptr, type, flags)           SWIG_NewPointerObj(ptr, type, flags)
+
+/* for C or C++ function pointers */
+#define SWIG_ConvertFunctionPtr(obj, pptr, type)        SWIG_Python_ConvertFunctionPtr(obj, pptr, type)
+#define SWIG_NewFunctionPtrObj(ptr, type)               SWIG_Python_NewPointerObj(NULL, ptr, type, 0)
+
+/* for C++ member pointers, ie, member methods */
+#define SWIG_ConvertMember(obj, ptr, sz, ty)            SWIG_Python_ConvertPacked(obj, ptr, sz, ty)
+#define SWIG_NewMemberObj(ptr, sz, type)                SWIG_Python_NewPackedObj(ptr, sz, type)
+
+
+/* Runtime API */
+
+#define SWIG_GetModule(clientdata)                      SWIG_Python_GetModule(clientdata)
+#define SWIG_SetModule(clientdata, pointer)             SWIG_Python_SetModule(pointer)
+#define SWIG_NewClientData(obj)                         SwigPyClientData_New(obj)
+
+#define SWIG_SetErrorObj                                SWIG_Python_SetErrorObj                            
+#define SWIG_SetErrorMsg                        	SWIG_Python_SetErrorMsg				   
+#define SWIG_ErrorType(code)                    	SWIG_Python_ErrorType(code)                        
+#define SWIG_Error(code, msg)            		SWIG_Python_SetErrorMsg(SWIG_ErrorType(code), msg) 
+#define SWIG_fail                        		goto fail					   
+
+
+/* Runtime API implementation */
+
+/* Error manipulation */
+
+SWIGINTERN void 
+SWIG_Python_SetErrorObj(PyObject *errtype, PyObject *obj) {
+  SWIG_PYTHON_THREAD_BEGIN_BLOCK; 
+  PyErr_SetObject(errtype, obj);
+  Py_DECREF(obj);
+  SWIG_PYTHON_THREAD_END_BLOCK;
+}
+
+SWIGINTERN void 
+SWIG_Python_SetErrorMsg(PyObject *errtype, const char *msg) {
+  SWIG_PYTHON_THREAD_BEGIN_BLOCK;
+  PyErr_SetString(errtype, msg);
+  SWIG_PYTHON_THREAD_END_BLOCK;
+}
+
+#define SWIG_Python_Raise(obj, type, desc)  SWIG_Python_SetErrorObj(SWIG_Python_ExceptionType(desc), obj)
+
+/* Set a constant value */
+
+#if defined(SWIGPYTHON_BUILTIN)
+
+SWIGINTERN void
+SwigPyBuiltin_AddPublicSymbol(PyObject *seq, const char *key) {
+  PyObject *s = PyString_InternFromString(key);
+  PyList_Append(seq, s);
+  Py_DECREF(s);
+}
+
+SWIGINTERN void
+SWIG_Python_SetConstant(PyObject *d, PyObject *public_interface, const char *name, PyObject *obj) {   
+  PyDict_SetItemString(d, name, obj);
+  Py_DECREF(obj);
+  if (public_interface)
+    SwigPyBuiltin_AddPublicSymbol(public_interface, name);
+}
+
+#else
+
+SWIGINTERN void
+SWIG_Python_SetConstant(PyObject *d, const char *name, PyObject *obj) {   
+  PyDict_SetItemString(d, name, obj);
+  Py_DECREF(obj);                            
+}
+
+#endif
+
+/* Append a value to the result obj */
+
+SWIGINTERN PyObject*
+SWIG_Python_AppendOutput(PyObject* result, PyObject* obj) {
+  if (!result) {
+    result = obj;
+  } else if (result == Py_None) {
+    Py_DECREF(result);
+    result = obj;
+  } else {
+    if (!PyList_Check(result)) {
+      PyObject *o2 = result;
+      result = PyList_New(1);
+      PyList_SetItem(result, 0, o2);
+    }
+    PyList_Append(result,obj);
+    Py_DECREF(obj);
+  }
+  return result;
+}
+
+/* Unpack the argument tuple */
+
+SWIGINTERN Py_ssize_t
+SWIG_Python_UnpackTuple(PyObject *args, const char *name, Py_ssize_t min, Py_ssize_t max, PyObject **objs)
+{
+  if (!args) {
+    if (!min && !max) {
+      return 1;
+    } else {
+      PyErr_Format(PyExc_TypeError, "%s expected %s%d arguments, got none", 
+		   name, (min == max ? "" : "at least "), (int)min);
+      return 0;
+    }
+  }  
+  if (!PyTuple_Check(args)) {
+    if (min <= 1 && max >= 1) {
+      Py_ssize_t i;
+      objs[0] = args;
+      for (i = 1; i < max; ++i) {
+	objs[i] = 0;
+      }
+      return 2;
+    }
+    PyErr_SetString(PyExc_SystemError, "UnpackTuple() argument list is not a tuple");
+    return 0;
+  } else {
+    Py_ssize_t l = PyTuple_GET_SIZE(args);
+    if (l < min) {
+      PyErr_Format(PyExc_TypeError, "%s expected %s%d arguments, got %d", 
+		   name, (min == max ? "" : "at least "), (int)min, (int)l);
+      return 0;
+    } else if (l > max) {
+      PyErr_Format(PyExc_TypeError, "%s expected %s%d arguments, got %d", 
+		   name, (min == max ? "" : "at most "), (int)max, (int)l);
+      return 0;
+    } else {
+      Py_ssize_t i;
+      for (i = 0; i < l; ++i) {
+	objs[i] = PyTuple_GET_ITEM(args, i);
+      }
+      for (; l < max; ++l) {
+	objs[l] = 0;
+      }
+      return i + 1;
+    }    
+  }
+}
+
+SWIGINTERN int
+SWIG_Python_CheckNoKeywords(PyObject *kwargs, const char *name) {
+  int no_kwargs = 1;
+  if (kwargs) {
+    assert(PyDict_Check(kwargs));
+    if (PyDict_Size(kwargs) > 0) {
+      PyErr_Format(PyExc_TypeError, "%s() does not take keyword arguments", name);
+      no_kwargs = 0;
+    }
+  }
+  return no_kwargs;
+}
+
+/* A functor is a function object with one single object argument */
+#define SWIG_Python_CallFunctor(functor, obj)	        PyObject_CallFunctionObjArgs(functor, obj, NULL);
+
+/*
+  Helper for static pointer initialization for both C and C++ code, for example
+  static PyObject *SWIG_STATIC_POINTER(MyVar) = NewSomething(...);
+*/
+#ifdef __cplusplus
+#define SWIG_STATIC_POINTER(var)  var
+#else
+#define SWIG_STATIC_POINTER(var)  var = 0; if (!var) var
+#endif
+
+/* -----------------------------------------------------------------------------
+ * Pointer declarations
+ * ----------------------------------------------------------------------------- */
+
+/* Flags for new pointer objects */
+#define SWIG_POINTER_NOSHADOW       (SWIG_POINTER_OWN      << 1)
+#define SWIG_POINTER_NEW            (SWIG_POINTER_NOSHADOW | SWIG_POINTER_OWN)
+
+#define SWIG_POINTER_IMPLICIT_CONV  (SWIG_POINTER_DISOWN   << 1)
+
+#define SWIG_BUILTIN_TP_INIT	    (SWIG_POINTER_OWN << 2)
+#define SWIG_BUILTIN_INIT	    (SWIG_BUILTIN_TP_INIT | SWIG_POINTER_OWN)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* The python void return value */
+
+SWIGRUNTIMEINLINE PyObject * 
+SWIG_Py_Void(void)
+{
+  PyObject *none = Py_None;
+  Py_INCREF(none);
+  return none;
+}
+
+/* SwigPyClientData */
+
+typedef struct {
+  PyObject *klass;
+  PyObject *newraw;
+  PyObject *newargs;
+  PyObject *destroy;
+  int delargs;
+  int implicitconv;
+  PyTypeObject *pytype;
+} SwigPyClientData;
+
+SWIGRUNTIMEINLINE int 
+SWIG_Python_CheckImplicit(swig_type_info *ty)
+{
+  SwigPyClientData *data = (SwigPyClientData *)ty->clientdata;
+  int fail = data ? data->implicitconv : 0;
+  if (fail)
+    PyErr_SetString(PyExc_TypeError, "Implicit conversion is prohibited for explicit constructors.");
+  return fail;
+}
+
+SWIGRUNTIMEINLINE PyObject *
+SWIG_Python_ExceptionType(swig_type_info *desc) {
+  SwigPyClientData *data = desc ? (SwigPyClientData *) desc->clientdata : 0;
+  PyObject *klass = data ? data->klass : 0;
+  return (klass ? klass : PyExc_RuntimeError);
+}
+
+
+SWIGRUNTIME SwigPyClientData * 
+SwigPyClientData_New(PyObject* obj)
+{
+  if (!obj) {
+    return 0;
+  } else {
+    SwigPyClientData *data = (SwigPyClientData *)malloc(sizeof(SwigPyClientData));
+    /* the klass element */
+    data->klass = obj;
+    Py_INCREF(data->klass);
+    /* the newraw method and newargs arguments used to create a new raw instance */
+    if (PyClass_Check(obj)) {
+      data->newraw = 0;
+      data->newargs = obj;
+      Py_INCREF(obj);
+    } else {
+      data->newraw = PyObject_GetAttrString(data->klass, "__new__");
+      if (data->newraw) {
+	Py_INCREF(data->newraw);
+	data->newargs = PyTuple_New(1);
+	PyTuple_SetItem(data->newargs, 0, obj);
+      } else {
+	data->newargs = obj;
+      }
+      Py_INCREF(data->newargs);
+    }
+    /* the destroy method, aka as the C++ delete method */
+    data->destroy = PyObject_GetAttrString(data->klass, "__swig_destroy__");
+    if (PyErr_Occurred()) {
+      PyErr_Clear();
+      data->destroy = 0;
+    }
+    if (data->destroy) {
+      int flags;
+      Py_INCREF(data->destroy);
+      flags = PyCFunction_GET_FLAGS(data->destroy);
+      data->delargs = !(flags & (METH_O));
+    } else {
+      data->delargs = 0;
+    }
+    data->implicitconv = 0;
+    data->pytype = 0;
+    return data;
+  }
+}
+
+SWIGRUNTIME void 
+SwigPyClientData_Del(SwigPyClientData *data) {
+  Py_XDECREF(data->newraw);
+  Py_XDECREF(data->newargs);
+  Py_XDECREF(data->destroy);
+}
+
+/* =============== SwigPyObject =====================*/
+
+typedef struct {
+  PyObject_HEAD
+  void *ptr;
+  swig_type_info *ty;
+  int own;
+  PyObject *next;
+#ifdef SWIGPYTHON_BUILTIN
+  PyObject *dict;
+#endif
+} SwigPyObject;
+
+
+#ifdef SWIGPYTHON_BUILTIN
+
+SWIGRUNTIME PyObject *
+SwigPyObject_get___dict__(PyObject *v, PyObject *SWIGUNUSEDPARM(args))
+{
+  SwigPyObject *sobj = (SwigPyObject *)v;
+
+  if (!sobj->dict)
+    sobj->dict = PyDict_New();
+
+  Py_INCREF(sobj->dict);
+  return sobj->dict;
+}
+
+#endif
+
+SWIGRUNTIME PyObject *
+SwigPyObject_long(SwigPyObject *v)
+{
+  return PyLong_FromVoidPtr(v->ptr);
+}
+
+SWIGRUNTIME PyObject *
+SwigPyObject_format(const char* fmt, SwigPyObject *v)
+{
+  PyObject *res = NULL;
+  PyObject *args = PyTuple_New(1);
+  if (args) {
+    if (PyTuple_SetItem(args, 0, SwigPyObject_long(v)) == 0) {
+      PyObject *ofmt = SWIG_Python_str_FromChar(fmt);
+      if (ofmt) {
+#if PY_VERSION_HEX >= 0x03000000
+	res = PyUnicode_Format(ofmt,args);
+#else
+	res = PyString_Format(ofmt,args);
+#endif
+	Py_DECREF(ofmt);
+      }
+      Py_DECREF(args);
+    }
+  }
+  return res;
+}
+
+SWIGRUNTIME PyObject *
+SwigPyObject_oct(SwigPyObject *v)
+{
+  return SwigPyObject_format("%o",v);
+}
+
+SWIGRUNTIME PyObject *
+SwigPyObject_hex(SwigPyObject *v)
+{
+  return SwigPyObject_format("%x",v);
+}
+
+SWIGRUNTIME PyObject *
+SwigPyObject_repr(SwigPyObject *v)
+{
+  const char *name = SWIG_TypePrettyName(v->ty);
+  PyObject *repr = SWIG_Python_str_FromFormat("<Swig Object of type '%s' at %p>", (name ? name : "unknown"), (void *)v);
+  if (v->next) {
+    PyObject *nrep = SwigPyObject_repr((SwigPyObject *)v->next);
+# if PY_VERSION_HEX >= 0x03000000
+    PyObject *joined = PyUnicode_Concat(repr, nrep);
+    Py_DecRef(repr);
+    Py_DecRef(nrep);
+    repr = joined;
+# else
+    PyString_ConcatAndDel(&repr,nrep);
+# endif
+  }
+  return repr;  
+}
+
+/* We need a version taking two PyObject* parameters so it's a valid
+ * PyCFunction to use in swigobject_methods[]. */
+SWIGRUNTIME PyObject *
+SwigPyObject_repr2(PyObject *v, PyObject *SWIGUNUSEDPARM(args))
+{
+  return SwigPyObject_repr((SwigPyObject*)v);
+}
+
+SWIGRUNTIME int
+SwigPyObject_compare(SwigPyObject *v, SwigPyObject *w)
+{
+  void *i = v->ptr;
+  void *j = w->ptr;
+  return (i < j) ? -1 : ((i > j) ? 1 : 0);
+}
+
+/* Added for Python 3.x, would it also be useful for Python 2.x? */
+SWIGRUNTIME PyObject*
+SwigPyObject_richcompare(SwigPyObject *v, SwigPyObject *w, int op)
+{
+  PyObject* res;
+  if( op != Py_EQ && op != Py_NE ) {
+    Py_INCREF(Py_NotImplemented);
+    return Py_NotImplemented;
+  }
+  res = PyBool_FromLong( (SwigPyObject_compare(v, w)==0) == (op == Py_EQ) ? 1 : 0);
+  return res;  
+}
+
+
+SWIGRUNTIME PyTypeObject* SwigPyObject_TypeOnce(void);
+
+#ifdef SWIGPYTHON_BUILTIN
+static swig_type_info *SwigPyObject_stype = 0;
+SWIGRUNTIME PyTypeObject*
+SwigPyObject_type(void) {
+    SwigPyClientData *cd;
+    assert(SwigPyObject_stype);
+    cd = (SwigPyClientData*) SwigPyObject_stype->clientdata;
+    assert(cd);
+    assert(cd->pytype);
+    return cd->pytype;
+}
+#else
+SWIGRUNTIME PyTypeObject*
+SwigPyObject_type(void) {
+  static PyTypeObject *SWIG_STATIC_POINTER(type) = SwigPyObject_TypeOnce();
+  return type;
+}
+#endif
+
+SWIGRUNTIMEINLINE int
+SwigPyObject_Check(PyObject *op) {
+#ifdef SWIGPYTHON_BUILTIN
+  PyTypeObject *target_tp = SwigPyObject_type();
+  if (PyType_IsSubtype(op->ob_type, target_tp))
+    return 1;
+  return (strcmp(op->ob_type->tp_name, "SwigPyObject") == 0);
+#else
+  return (Py_TYPE(op) == SwigPyObject_type())
+    || (strcmp(Py_TYPE(op)->tp_name,"SwigPyObject") == 0);
+#endif
+}
+
+SWIGRUNTIME PyObject *
+SwigPyObject_New(void *ptr, swig_type_info *ty, int own);
+
+SWIGRUNTIME void
+SwigPyObject_dealloc(PyObject *v)
+{
+  SwigPyObject *sobj = (SwigPyObject *) v;
+  PyObject *next = sobj->next;
+  if (sobj->own == SWIG_POINTER_OWN) {
+    swig_type_info *ty = sobj->ty;
+    SwigPyClientData *data = ty ? (SwigPyClientData *) ty->clientdata : 0;
+    PyObject *destroy = data ? data->destroy : 0;
+    if (destroy) {
+      /* destroy is always a VARARGS method */
+      PyObject *res;
+
+      /* PyObject_CallFunction() has the potential to silently drop
+         the active exception.  In cases of unnamed temporary
+         variable or where we just finished iterating over a generator
+         StopIteration will be active right now, and this needs to
+         remain true upon return from SwigPyObject_dealloc.  So save
+         and restore. */
+      
+      PyObject *type = NULL, *value = NULL, *traceback = NULL;
+      PyErr_Fetch(&type, &value, &traceback);
+
+      if (data->delargs) {
+        /* we need to create a temporary object to carry the destroy operation */
+        PyObject *tmp = SwigPyObject_New(sobj->ptr, ty, 0);
+        res = SWIG_Python_CallFunctor(destroy, tmp);
+        Py_DECREF(tmp);
+      } else {
+        PyCFunction meth = PyCFunction_GET_FUNCTION(destroy);
+        PyObject *mself = PyCFunction_GET_SELF(destroy);
+        res = ((*meth)(mself, v));
+      }
+      if (!res)
+        PyErr_WriteUnraisable(destroy);
+
+      PyErr_Restore(type, value, traceback);
+
+      Py_XDECREF(res);
+    } 
+#if !defined(SWIG_PYTHON_SILENT_MEMLEAK)
+    else {
+      const char *name = SWIG_TypePrettyName(ty);
+      printf("swig/python detected a memory leak of type '%s', no destructor found.\n", (name ? name : "unknown"));
+    }
+#endif
+  } 
+  Py_XDECREF(next);
+  PyObject_DEL(v);
+}
+
+SWIGRUNTIME PyObject* 
+SwigPyObject_append(PyObject* v, PyObject* next)
+{
+  SwigPyObject *sobj = (SwigPyObject *) v;
+  if (!SwigPyObject_Check(next)) {
+    PyErr_SetString(PyExc_TypeError, "Attempt to append a non SwigPyObject");
+    return NULL;
+  }
+  sobj->next = next;
+  Py_INCREF(next);
+  return SWIG_Py_Void();
+}
+
+SWIGRUNTIME PyObject* 
+SwigPyObject_next(PyObject* v, PyObject *SWIGUNUSEDPARM(args))
+{
+  SwigPyObject *sobj = (SwigPyObject *) v;
+  if (sobj->next) {    
+    Py_INCREF(sobj->next);
+    return sobj->next;
+  } else {
+    return SWIG_Py_Void();
+  }
+}
+
+SWIGINTERN PyObject*
+SwigPyObject_disown(PyObject* v, PyObject *SWIGUNUSEDPARM(args))
+{
+  SwigPyObject *sobj = (SwigPyObject *)v;
+  sobj->own = 0;
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject*
+SwigPyObject_acquire(PyObject* v, PyObject *SWIGUNUSEDPARM(args))
+{
+  SwigPyObject *sobj = (SwigPyObject *)v;
+  sobj->own = SWIG_POINTER_OWN;
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject*
+SwigPyObject_own(PyObject *v, PyObject *args)
+{
+  PyObject *val = 0;
+  if (!PyArg_UnpackTuple(args, "own", 0, 1, &val)) {
+    return NULL;
+  } else {
+    SwigPyObject *sobj = (SwigPyObject *)v;
+    PyObject *obj = PyBool_FromLong(sobj->own);
+    if (val) {
+      if (PyObject_IsTrue(val)) {
+        SwigPyObject_acquire(v,args);
+      } else {
+        SwigPyObject_disown(v,args);
+      }
+    } 
+    return obj;
+  }
+}
+
+static PyMethodDef
+swigobject_methods[] = {
+  {"disown",  SwigPyObject_disown,  METH_NOARGS,  "releases ownership of the pointer"},
+  {"acquire", SwigPyObject_acquire, METH_NOARGS,  "acquires ownership of the pointer"},
+  {"own",     SwigPyObject_own,     METH_VARARGS, "returns/sets ownership of the pointer"},
+  {"append",  SwigPyObject_append,  METH_O,       "appends another 'this' object"},
+  {"next",    SwigPyObject_next,    METH_NOARGS,  "returns the next 'this' object"},
+  {"__repr__",SwigPyObject_repr2,   METH_NOARGS,  "returns object representation"},
+  {0, 0, 0, 0}  
+};
+
+SWIGRUNTIME PyTypeObject*
+SwigPyObject_TypeOnce(void) {
+  static char swigobject_doc[] = "Swig object carries a C/C++ instance pointer";
+
+  static PyNumberMethods SwigPyObject_as_number = {
+    (binaryfunc)0, /*nb_add*/
+    (binaryfunc)0, /*nb_subtract*/
+    (binaryfunc)0, /*nb_multiply*/
+    /* nb_divide removed in Python 3 */
+#if PY_VERSION_HEX < 0x03000000
+    (binaryfunc)0, /*nb_divide*/
+#endif
+    (binaryfunc)0, /*nb_remainder*/
+    (binaryfunc)0, /*nb_divmod*/
+    (ternaryfunc)0,/*nb_power*/
+    (unaryfunc)0,  /*nb_negative*/
+    (unaryfunc)0,  /*nb_positive*/
+    (unaryfunc)0,  /*nb_absolute*/
+    (inquiry)0,    /*nb_nonzero*/
+    0,		   /*nb_invert*/
+    0,		   /*nb_lshift*/
+    0,		   /*nb_rshift*/
+    0,		   /*nb_and*/
+    0,		   /*nb_xor*/
+    0,		   /*nb_or*/
+#if PY_VERSION_HEX < 0x03000000
+    0,   /*nb_coerce*/
+#endif
+    (unaryfunc)SwigPyObject_long, /*nb_int*/
+#if PY_VERSION_HEX < 0x03000000
+    (unaryfunc)SwigPyObject_long, /*nb_long*/
+#else
+    0, /*nb_reserved*/
+#endif
+    (unaryfunc)0,                 /*nb_float*/
+#if PY_VERSION_HEX < 0x03000000
+    (unaryfunc)SwigPyObject_oct,  /*nb_oct*/
+    (unaryfunc)SwigPyObject_hex,  /*nb_hex*/
+#endif
+#if PY_VERSION_HEX >= 0x03050000 /* 3.5 */
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 /* nb_inplace_add -> nb_inplace_matrix_multiply */
+#elif PY_VERSION_HEX >= 0x03000000 /* 3.0 */
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 /* nb_inplace_add -> nb_index, nb_inplace_divide removed */
+#else
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 /* nb_inplace_add -> nb_index */
+#endif
+  };
+
+  static PyTypeObject swigpyobject_type;
+  static int type_init = 0;
+  if (!type_init) {
+    const PyTypeObject tmp = {
+#if PY_VERSION_HEX >= 0x03000000
+      PyVarObject_HEAD_INIT(NULL, 0)
+#else
+      PyObject_HEAD_INIT(NULL)
+      0,                                    /* ob_size */
+#endif
+      "SwigPyObject",                       /* tp_name */
+      sizeof(SwigPyObject),                 /* tp_basicsize */
+      0,                                    /* tp_itemsize */
+      (destructor)SwigPyObject_dealloc,     /* tp_dealloc */
+      0,                                    /* tp_print */
+      (getattrfunc)0,                       /* tp_getattr */
+      (setattrfunc)0,                       /* tp_setattr */
+#if PY_VERSION_HEX >= 0x03000000
+      0, /* tp_reserved in 3.0.1, tp_compare in 3.0.0 but not used */
+#else
+      (cmpfunc)SwigPyObject_compare,        /* tp_compare */
+#endif
+      (reprfunc)SwigPyObject_repr,          /* tp_repr */
+      &SwigPyObject_as_number,              /* tp_as_number */
+      0,                                    /* tp_as_sequence */
+      0,                                    /* tp_as_mapping */
+      (hashfunc)0,                          /* tp_hash */
+      (ternaryfunc)0,                       /* tp_call */
+      0,                                    /* tp_str */
+      PyObject_GenericGetAttr,              /* tp_getattro */
+      0,                                    /* tp_setattro */
+      0,                                    /* tp_as_buffer */
+      Py_TPFLAGS_DEFAULT,                   /* tp_flags */
+      swigobject_doc,                       /* tp_doc */
+      0,                                    /* tp_traverse */
+      0,                                    /* tp_clear */
+      (richcmpfunc)SwigPyObject_richcompare,/* tp_richcompare */
+      0,                                    /* tp_weaklistoffset */
+      0,                                    /* tp_iter */
+      0,                                    /* tp_iternext */
+      swigobject_methods,                   /* tp_methods */
+      0,                                    /* tp_members */
+      0,                                    /* tp_getset */
+      0,                                    /* tp_base */
+      0,                                    /* tp_dict */
+      0,                                    /* tp_descr_get */
+      0,                                    /* tp_descr_set */
+      0,                                    /* tp_dictoffset */
+      0,                                    /* tp_init */
+      0,                                    /* tp_alloc */
+      0,                                    /* tp_new */
+      0,                                    /* tp_free */
+      0,                                    /* tp_is_gc */
+      0,                                    /* tp_bases */
+      0,                                    /* tp_mro */
+      0,                                    /* tp_cache */
+      0,                                    /* tp_subclasses */
+      0,                                    /* tp_weaklist */
+      0,                                    /* tp_del */
+      0,                                    /* tp_version_tag */
+#if PY_VERSION_HEX >= 0x03040000
+      0,                                    /* tp_finalize */
+#endif
+#if PY_VERSION_HEX >= 0x03080000
+      0,                                    /* tp_vectorcall */
+#endif
+#if (PY_VERSION_HEX >= 0x03080000) && (PY_VERSION_HEX < 0x03090000)
+      0,                                    /* tp_print */
+#endif
+#ifdef COUNT_ALLOCS
+      0,                                    /* tp_allocs */
+      0,                                    /* tp_frees */
+      0,                                    /* tp_maxalloc */
+      0,                                    /* tp_prev */
+      0                                     /* tp_next */
+#endif
+    };
+    swigpyobject_type = tmp;
+    type_init = 1;
+    if (PyType_Ready(&swigpyobject_type) < 0)
+      return NULL;
+  }
+  return &swigpyobject_type;
+}
+
+SWIGRUNTIME PyObject *
+SwigPyObject_New(void *ptr, swig_type_info *ty, int own)
+{
+  SwigPyObject *sobj = PyObject_NEW(SwigPyObject, SwigPyObject_type());
+  if (sobj) {
+    sobj->ptr  = ptr;
+    sobj->ty   = ty;
+    sobj->own  = own;
+    sobj->next = 0;
+  }
+  return (PyObject *)sobj;
+}
+
+/* -----------------------------------------------------------------------------
+ * Implements a simple Swig Packed type, and use it instead of string
+ * ----------------------------------------------------------------------------- */
+
+typedef struct {
+  PyObject_HEAD
+  void *pack;
+  swig_type_info *ty;
+  size_t size;
+} SwigPyPacked;
+
+SWIGRUNTIME PyObject *
+SwigPyPacked_repr(SwigPyPacked *v)
+{
+  char result[SWIG_BUFFER_SIZE];
+  if (SWIG_PackDataName(result, v->pack, v->size, 0, sizeof(result))) {
+    return SWIG_Python_str_FromFormat("<Swig Packed at %s%s>", result, v->ty->name);
+  } else {
+    return SWIG_Python_str_FromFormat("<Swig Packed %s>", v->ty->name);
+  }  
+}
+
+SWIGRUNTIME PyObject *
+SwigPyPacked_str(SwigPyPacked *v)
+{
+  char result[SWIG_BUFFER_SIZE];
+  if (SWIG_PackDataName(result, v->pack, v->size, 0, sizeof(result))){
+    return SWIG_Python_str_FromFormat("%s%s", result, v->ty->name);
+  } else {
+    return SWIG_Python_str_FromChar(v->ty->name);
+  }  
+}
+
+SWIGRUNTIME int
+SwigPyPacked_compare(SwigPyPacked *v, SwigPyPacked *w)
+{
+  size_t i = v->size;
+  size_t j = w->size;
+  int s = (i < j) ? -1 : ((i > j) ? 1 : 0);
+  return s ? s : strncmp((const char *)v->pack, (const char *)w->pack, 2*v->size);
+}
+
+SWIGRUNTIME PyTypeObject* SwigPyPacked_TypeOnce(void);
+
+SWIGRUNTIME PyTypeObject*
+SwigPyPacked_type(void) {
+  static PyTypeObject *SWIG_STATIC_POINTER(type) = SwigPyPacked_TypeOnce();
+  return type;
+}
+
+SWIGRUNTIMEINLINE int
+SwigPyPacked_Check(PyObject *op) {
+  return ((op)->ob_type == SwigPyPacked_TypeOnce()) 
+    || (strcmp((op)->ob_type->tp_name,"SwigPyPacked") == 0);
+}
+
+SWIGRUNTIME void
+SwigPyPacked_dealloc(PyObject *v)
+{
+  if (SwigPyPacked_Check(v)) {
+    SwigPyPacked *sobj = (SwigPyPacked *) v;
+    free(sobj->pack);
+  }
+  PyObject_DEL(v);
+}
+
+SWIGRUNTIME PyTypeObject*
+SwigPyPacked_TypeOnce(void) {
+  static char swigpacked_doc[] = "Swig object carries a C/C++ instance pointer";
+  static PyTypeObject swigpypacked_type;
+  static int type_init = 0;
+  if (!type_init) {
+    const PyTypeObject tmp = {
+#if PY_VERSION_HEX>=0x03000000
+      PyVarObject_HEAD_INIT(NULL, 0)
+#else
+      PyObject_HEAD_INIT(NULL)
+      0,                                    /* ob_size */
+#endif
+      "SwigPyPacked",                       /* tp_name */
+      sizeof(SwigPyPacked),                 /* tp_basicsize */
+      0,                                    /* tp_itemsize */
+      (destructor)SwigPyPacked_dealloc,     /* tp_dealloc */
+      0,                                    /* tp_print */
+      (getattrfunc)0,                       /* tp_getattr */
+      (setattrfunc)0,                       /* tp_setattr */
+#if PY_VERSION_HEX>=0x03000000
+      0, /* tp_reserved in 3.0.1 */
+#else
+      (cmpfunc)SwigPyPacked_compare,        /* tp_compare */
+#endif
+      (reprfunc)SwigPyPacked_repr,          /* tp_repr */
+      0,                                    /* tp_as_number */
+      0,                                    /* tp_as_sequence */
+      0,                                    /* tp_as_mapping */
+      (hashfunc)0,                          /* tp_hash */
+      (ternaryfunc)0,                       /* tp_call */
+      (reprfunc)SwigPyPacked_str,           /* tp_str */
+      PyObject_GenericGetAttr,              /* tp_getattro */
+      0,                                    /* tp_setattro */
+      0,                                    /* tp_as_buffer */
+      Py_TPFLAGS_DEFAULT,                   /* tp_flags */
+      swigpacked_doc,                       /* tp_doc */
+      0,                                    /* tp_traverse */
+      0,                                    /* tp_clear */
+      0,                                    /* tp_richcompare */
+      0,                                    /* tp_weaklistoffset */
+      0,                                    /* tp_iter */
+      0,                                    /* tp_iternext */
+      0,                                    /* tp_methods */
+      0,                                    /* tp_members */
+      0,                                    /* tp_getset */
+      0,                                    /* tp_base */
+      0,                                    /* tp_dict */
+      0,                                    /* tp_descr_get */
+      0,                                    /* tp_descr_set */
+      0,                                    /* tp_dictoffset */
+      0,                                    /* tp_init */
+      0,                                    /* tp_alloc */
+      0,                                    /* tp_new */
+      0,                                    /* tp_free */
+      0,                                    /* tp_is_gc */
+      0,                                    /* tp_bases */
+      0,                                    /* tp_mro */
+      0,                                    /* tp_cache */
+      0,                                    /* tp_subclasses */
+      0,                                    /* tp_weaklist */
+      0,                                    /* tp_del */
+      0,                                    /* tp_version_tag */
+#if PY_VERSION_HEX >= 0x03040000
+      0,                                    /* tp_finalize */
+#endif
+#if PY_VERSION_HEX >= 0x03080000
+      0,                                    /* tp_vectorcall */
+#endif
+#if (PY_VERSION_HEX >= 0x03080000) && (PY_VERSION_HEX < 0x03090000)
+      0,                                    /* tp_print */
+#endif
+#ifdef COUNT_ALLOCS
+      0,                                    /* tp_allocs */
+      0,                                    /* tp_frees */
+      0,                                    /* tp_maxalloc */
+      0,                                    /* tp_prev */
+      0                                     /* tp_next */
+#endif
+    };
+    swigpypacked_type = tmp;
+    type_init = 1;
+    if (PyType_Ready(&swigpypacked_type) < 0)
+      return NULL;
+  }
+  return &swigpypacked_type;
+}
+
+SWIGRUNTIME PyObject *
+SwigPyPacked_New(void *ptr, size_t size, swig_type_info *ty)
+{
+  SwigPyPacked *sobj = PyObject_NEW(SwigPyPacked, SwigPyPacked_type());
+  if (sobj) {
+    void *pack = malloc(size);
+    if (pack) {
+      memcpy(pack, ptr, size);
+      sobj->pack = pack;
+      sobj->ty   = ty;
+      sobj->size = size;
+    } else {
+      PyObject_DEL((PyObject *) sobj);
+      sobj = 0;
+    }
+  }
+  return (PyObject *) sobj;
+}
+
+SWIGRUNTIME swig_type_info *
+SwigPyPacked_UnpackData(PyObject *obj, void *ptr, size_t size)
+{
+  if (SwigPyPacked_Check(obj)) {
+    SwigPyPacked *sobj = (SwigPyPacked *)obj;
+    if (sobj->size != size) return 0;
+    memcpy(ptr, sobj->pack, size);
+    return sobj->ty;
+  } else {
+    return 0;
+  }
+}
+
+/* -----------------------------------------------------------------------------
+ * pointers/data manipulation
+ * ----------------------------------------------------------------------------- */
+
+static PyObject *Swig_This_global = NULL;
+
+SWIGRUNTIME PyObject *
+SWIG_This(void)
+{
+  if (Swig_This_global == NULL)
+    Swig_This_global = SWIG_Python_str_FromChar("this");
+  return Swig_This_global;
+}
+
+/* #define SWIG_PYTHON_SLOW_GETSET_THIS */
+
+/* TODO: I don't know how to implement the fast getset in Python 3 right now */
+#if PY_VERSION_HEX>=0x03000000
+#define SWIG_PYTHON_SLOW_GETSET_THIS 
+#endif
+
+SWIGRUNTIME SwigPyObject *
+SWIG_Python_GetSwigThis(PyObject *pyobj) 
+{
+  PyObject *obj;
+
+  if (SwigPyObject_Check(pyobj))
+    return (SwigPyObject *) pyobj;
+
+#ifdef SWIGPYTHON_BUILTIN
+  (void)obj;
+# ifdef PyWeakref_CheckProxy
+  if (PyWeakref_CheckProxy(pyobj)) {
+    pyobj = PyWeakref_GET_OBJECT(pyobj);
+    if (pyobj && SwigPyObject_Check(pyobj))
+      return (SwigPyObject*) pyobj;
+  }
+# endif
+  return NULL;
+#else
+
+  obj = 0;
+
+#if !defined(SWIG_PYTHON_SLOW_GETSET_THIS)
+  if (PyInstance_Check(pyobj)) {
+    obj = _PyInstance_Lookup(pyobj, SWIG_This());      
+  } else {
+    PyObject **dictptr = _PyObject_GetDictPtr(pyobj);
+    if (dictptr != NULL) {
+      PyObject *dict = *dictptr;
+      obj = dict ? PyDict_GetItem(dict, SWIG_This()) : 0;
+    } else {
+#ifdef PyWeakref_CheckProxy
+      if (PyWeakref_CheckProxy(pyobj)) {
+	PyObject *wobj = PyWeakref_GET_OBJECT(pyobj);
+	return wobj ? SWIG_Python_GetSwigThis(wobj) : 0;
+      }
+#endif
+      obj = PyObject_GetAttr(pyobj,SWIG_This());
+      if (obj) {
+	Py_DECREF(obj);
+      } else {
+	if (PyErr_Occurred()) PyErr_Clear();
+	return 0;
+      }
+    }
+  }
+#else
+  obj = PyObject_GetAttr(pyobj,SWIG_This());
+  if (obj) {
+    Py_DECREF(obj);
+  } else {
+    if (PyErr_Occurred()) PyErr_Clear();
+    return 0;
+  }
+#endif
+  if (obj && !SwigPyObject_Check(obj)) {
+    /* a PyObject is called 'this', try to get the 'real this'
+       SwigPyObject from it */ 
+    return SWIG_Python_GetSwigThis(obj);
+  }
+  return (SwigPyObject *)obj;
+#endif
+}
+
+/* Acquire a pointer value */
+
+SWIGRUNTIME int
+SWIG_Python_AcquirePtr(PyObject *obj, int own) {
+  if (own == SWIG_POINTER_OWN) {
+    SwigPyObject *sobj = SWIG_Python_GetSwigThis(obj);
+    if (sobj) {
+      int oldown = sobj->own;
+      sobj->own = own;
+      return oldown;
+    }
+  }
+  return 0;
+}
+
+/* Convert a pointer value */
+
+SWIGRUNTIME int
+SWIG_Python_ConvertPtrAndOwn(PyObject *obj, void **ptr, swig_type_info *ty, int flags, int *own) {
+  int res;
+  SwigPyObject *sobj;
+  int implicit_conv = (flags & SWIG_POINTER_IMPLICIT_CONV) != 0;
+
+  if (!obj)
+    return SWIG_ERROR;
+  if (obj == Py_None && !implicit_conv) {
+    if (ptr)
+      *ptr = 0;
+    return (flags & SWIG_POINTER_NO_NULL) ? SWIG_NullReferenceError : SWIG_OK;
+  }
+
+  res = SWIG_ERROR;
+
+  sobj = SWIG_Python_GetSwigThis(obj);
+  if (own)
+    *own = 0;
+  while (sobj) {
+    void *vptr = sobj->ptr;
+    if (ty) {
+      swig_type_info *to = sobj->ty;
+      if (to == ty) {
+        /* no type cast needed */
+        if (ptr) *ptr = vptr;
+        break;
+      } else {
+        swig_cast_info *tc = SWIG_TypeCheck(to->name,ty);
+        if (!tc) {
+          sobj = (SwigPyObject *)sobj->next;
+        } else {
+          if (ptr) {
+            int newmemory = 0;
+            *ptr = SWIG_TypeCast(tc,vptr,&newmemory);
+            if (newmemory == SWIG_CAST_NEW_MEMORY) {
+              assert(own); /* badly formed typemap which will lead to a memory leak - it must set and use own to delete *ptr */
+              if (own)
+                *own = *own | SWIG_CAST_NEW_MEMORY;
+            }
+          }
+          break;
+        }
+      }
+    } else {
+      if (ptr) *ptr = vptr;
+      break;
+    }
+  }
+  if (sobj) {
+    if (own)
+      *own = *own | sobj->own;
+    if (flags & SWIG_POINTER_DISOWN) {
+      sobj->own = 0;
+    }
+    res = SWIG_OK;
+  } else {
+    if (implicit_conv) {
+      SwigPyClientData *data = ty ? (SwigPyClientData *) ty->clientdata : 0;
+      if (data && !data->implicitconv) {
+        PyObject *klass = data->klass;
+        if (klass) {
+          PyObject *impconv;
+          data->implicitconv = 1; /* avoid recursion and call 'explicit' constructors*/
+          impconv = SWIG_Python_CallFunctor(klass, obj);
+          data->implicitconv = 0;
+          if (PyErr_Occurred()) {
+            PyErr_Clear();
+            impconv = 0;
+          }
+          if (impconv) {
+            SwigPyObject *iobj = SWIG_Python_GetSwigThis(impconv);
+            if (iobj) {
+              void *vptr;
+              res = SWIG_Python_ConvertPtrAndOwn((PyObject*)iobj, &vptr, ty, 0, 0);
+              if (SWIG_IsOK(res)) {
+                if (ptr) {
+                  *ptr = vptr;
+                  /* transfer the ownership to 'ptr' */
+                  iobj->own = 0;
+                  res = SWIG_AddCast(res);
+                  res = SWIG_AddNewMask(res);
+                } else {
+                  res = SWIG_AddCast(res);		    
+                }
+              }
+            }
+            Py_DECREF(impconv);
+          }
+        }
+      }
+      if (!SWIG_IsOK(res) && obj == Py_None) {
+        if (ptr)
+          *ptr = 0;
+        if (PyErr_Occurred())
+          PyErr_Clear();
+        res = SWIG_OK;
+      }
+    }
+  }
+  return res;
+}
+
+/* Convert a function ptr value */
+
+SWIGRUNTIME int
+SWIG_Python_ConvertFunctionPtr(PyObject *obj, void **ptr, swig_type_info *ty) {
+  if (!PyCFunction_Check(obj)) {
+    return SWIG_ConvertPtr(obj, ptr, ty, 0);
+  } else {
+    void *vptr = 0;
+    swig_cast_info *tc;
+
+    /* here we get the method pointer for callbacks */
+    const char *doc = (((PyCFunctionObject *)obj) -> m_ml -> ml_doc);
+    const char *desc = doc ? strstr(doc, "swig_ptr: ") : 0;
+    if (desc)
+      desc = ty ? SWIG_UnpackVoidPtr(desc + 10, &vptr, ty->name) : 0;
+    if (!desc)
+      return SWIG_ERROR;
+    tc = SWIG_TypeCheck(desc,ty);
+    if (tc) {
+      int newmemory = 0;
+      *ptr = SWIG_TypeCast(tc,vptr,&newmemory);
+      assert(!newmemory); /* newmemory handling not yet implemented */
+    } else {
+      return SWIG_ERROR;
+    }
+    return SWIG_OK;
+  }
+}
+
+/* Convert a packed pointer value */
+
+SWIGRUNTIME int
+SWIG_Python_ConvertPacked(PyObject *obj, void *ptr, size_t sz, swig_type_info *ty) {
+  swig_type_info *to = SwigPyPacked_UnpackData(obj, ptr, sz);
+  if (!to) return SWIG_ERROR;
+  if (ty) {
+    if (to != ty) {
+      /* check type cast? */
+      swig_cast_info *tc = SWIG_TypeCheck(to->name,ty);
+      if (!tc) return SWIG_ERROR;
+    }
+  }
+  return SWIG_OK;
+}  
+
+/* -----------------------------------------------------------------------------
+ * Create a new pointer object
+ * ----------------------------------------------------------------------------- */
+
+/*
+  Create a new instance object, without calling __init__, and set the
+  'this' attribute.
+*/
+
+SWIGRUNTIME PyObject* 
+SWIG_Python_NewShadowInstance(SwigPyClientData *data, PyObject *swig_this)
+{
+  PyObject *inst = 0;
+  PyObject *newraw = data->newraw;
+  if (newraw) {
+    inst = PyObject_Call(newraw, data->newargs, NULL);
+    if (inst) {
+#if !defined(SWIG_PYTHON_SLOW_GETSET_THIS)
+      PyObject **dictptr = _PyObject_GetDictPtr(inst);
+      if (dictptr != NULL) {
+	PyObject *dict = *dictptr;
+	if (dict == NULL) {
+	  dict = PyDict_New();
+	  *dictptr = dict;
+	  PyDict_SetItem(dict, SWIG_This(), swig_this);
+	}
+      }
+#else
+      if (PyObject_SetAttr(inst, SWIG_This(), swig_this) == -1) {
+        Py_DECREF(inst);
+        inst = 0;
+      }
+#endif
+    }
+  } else {
+#if PY_VERSION_HEX >= 0x03000000
+    PyObject *empty_args = PyTuple_New(0);
+    if (empty_args) {
+      PyObject *empty_kwargs = PyDict_New();
+      if (empty_kwargs) {
+        inst = ((PyTypeObject *)data->newargs)->tp_new((PyTypeObject *)data->newargs, empty_args, empty_kwargs);
+        Py_DECREF(empty_kwargs);
+        if (inst) {
+          if (PyObject_SetAttr(inst, SWIG_This(), swig_this) == -1) {
+            Py_DECREF(inst);
+            inst = 0;
+          } else {
+            Py_TYPE(inst)->tp_flags &= ~Py_TPFLAGS_VALID_VERSION_TAG;
+          }
+        }
+      }
+      Py_DECREF(empty_args);
+    }
+#else
+    PyObject *dict = PyDict_New();
+    if (dict) {
+      PyDict_SetItem(dict, SWIG_This(), swig_this);
+      inst = PyInstance_NewRaw(data->newargs, dict);
+      Py_DECREF(dict);
+    }
+#endif
+  }
+  return inst;
+}
+
+SWIGRUNTIME int
+SWIG_Python_SetSwigThis(PyObject *inst, PyObject *swig_this)
+{
+#if !defined(SWIG_PYTHON_SLOW_GETSET_THIS)
+  PyObject **dictptr = _PyObject_GetDictPtr(inst);
+  if (dictptr != NULL) {
+    PyObject *dict = *dictptr;
+    if (dict == NULL) {
+      dict = PyDict_New();
+      *dictptr = dict;
+    }
+    return PyDict_SetItem(dict, SWIG_This(), swig_this);
+  }
+#endif
+  return PyObject_SetAttr(inst, SWIG_This(), swig_this);
+} 
+
+
+SWIGINTERN PyObject *
+SWIG_Python_InitShadowInstance(PyObject *args) {
+  PyObject *obj[2];
+  if (!SWIG_Python_UnpackTuple(args, "swiginit", 2, 2, obj)) {
+    return NULL;
+  } else {
+    SwigPyObject *sthis = SWIG_Python_GetSwigThis(obj[0]);
+    if (sthis) {
+      SwigPyObject_append((PyObject*) sthis, obj[1]);
+    } else {
+      if (SWIG_Python_SetSwigThis(obj[0], obj[1]) != 0)
+        return NULL;
+    }
+    return SWIG_Py_Void();
+  }
+}
+
+/* Create a new pointer object */
+
+SWIGRUNTIME PyObject *
+SWIG_Python_NewPointerObj(PyObject *self, void *ptr, swig_type_info *type, int flags) {
+  SwigPyClientData *clientdata;
+  PyObject * robj;
+  int own;
+
+  if (!ptr)
+    return SWIG_Py_Void();
+
+  clientdata = type ? (SwigPyClientData *)(type->clientdata) : 0;
+  own = (flags & SWIG_POINTER_OWN) ? SWIG_POINTER_OWN : 0;
+  if (clientdata && clientdata->pytype) {
+    SwigPyObject *newobj;
+    if (flags & SWIG_BUILTIN_TP_INIT) {
+      newobj = (SwigPyObject*) self;
+      if (newobj->ptr) {
+        PyObject *next_self = clientdata->pytype->tp_alloc(clientdata->pytype, 0);
+        while (newobj->next)
+	  newobj = (SwigPyObject *) newobj->next;
+        newobj->next = next_self;
+        newobj = (SwigPyObject *)next_self;
+#ifdef SWIGPYTHON_BUILTIN
+        newobj->dict = 0;
+#endif
+      }
+    } else {
+      newobj = PyObject_New(SwigPyObject, clientdata->pytype);
+#ifdef SWIGPYTHON_BUILTIN
+      newobj->dict = 0;
+#endif
+    }
+    if (newobj) {
+      newobj->ptr = ptr;
+      newobj->ty = type;
+      newobj->own = own;
+      newobj->next = 0;
+      return (PyObject*) newobj;
+    }
+    return SWIG_Py_Void();
+  }
+
+  assert(!(flags & SWIG_BUILTIN_TP_INIT));
+
+  robj = SwigPyObject_New(ptr, type, own);
+  if (robj && clientdata && !(flags & SWIG_POINTER_NOSHADOW)) {
+    PyObject *inst = SWIG_Python_NewShadowInstance(clientdata, robj);
+    Py_DECREF(robj);
+    robj = inst;
+  }
+  return robj;
+}
+
+/* Create a new packed object */
+
+SWIGRUNTIMEINLINE PyObject *
+SWIG_Python_NewPackedObj(void *ptr, size_t sz, swig_type_info *type) {
+  return ptr ? SwigPyPacked_New((void *) ptr, sz, type) : SWIG_Py_Void();
+}
+
+/* -----------------------------------------------------------------------------*
+ *  Get type list 
+ * -----------------------------------------------------------------------------*/
+
+#ifdef SWIG_LINK_RUNTIME
+void *SWIG_ReturnGlobalTypeList(void *);
+#endif
+
+SWIGRUNTIME swig_module_info *
+SWIG_Python_GetModule(void *SWIGUNUSEDPARM(clientdata)) {
+  static void *type_pointer = (void *)0;
+  /* first check if module already created */
+  if (!type_pointer) {
+#ifdef SWIG_LINK_RUNTIME
+    type_pointer = SWIG_ReturnGlobalTypeList((void *)0);
+#else
+    type_pointer = PyCapsule_Import(SWIGPY_CAPSULE_NAME, 0);
+    if (PyErr_Occurred()) {
+      PyErr_Clear();
+      type_pointer = (void *)0;
+    }
+#endif
+  }
+  return (swig_module_info *) type_pointer;
+}
+
+SWIGRUNTIME void
+SWIG_Python_DestroyModule(PyObject *obj)
+{
+  swig_module_info *swig_module = (swig_module_info *) PyCapsule_GetPointer(obj, SWIGPY_CAPSULE_NAME);
+  swig_type_info **types = swig_module->types;
+  size_t i;
+  for (i =0; i < swig_module->size; ++i) {
+    swig_type_info *ty = types[i];
+    if (ty->owndata) {
+      SwigPyClientData *data = (SwigPyClientData *) ty->clientdata;
+      if (data) SwigPyClientData_Del(data);
+    }
+  }
+  Py_DECREF(SWIG_This());
+  Swig_This_global = NULL;
+}
+
+SWIGRUNTIME void
+SWIG_Python_SetModule(swig_module_info *swig_module) {
+#if PY_VERSION_HEX >= 0x03000000
+ /* Add a dummy module object into sys.modules */
+  PyObject *module = PyImport_AddModule("swig_runtime_data" SWIG_RUNTIME_VERSION);
+#else
+  static PyMethodDef swig_empty_runtime_method_table[] = { {NULL, NULL, 0, NULL} }; /* Sentinel */
+  PyObject *module = Py_InitModule("swig_runtime_data" SWIG_RUNTIME_VERSION, swig_empty_runtime_method_table);
+#endif
+  PyObject *pointer = PyCapsule_New((void *) swig_module, SWIGPY_CAPSULE_NAME, SWIG_Python_DestroyModule);
+  if (pointer && module) {
+    PyModule_AddObject(module, "type_pointer_capsule" SWIG_TYPE_TABLE_NAME, pointer);
+  } else {
+    Py_XDECREF(pointer);
+  }
+}
+
+/* The python cached type query */
+SWIGRUNTIME PyObject *
+SWIG_Python_TypeCache(void) {
+  static PyObject *SWIG_STATIC_POINTER(cache) = PyDict_New();
+  return cache;
+}
+
+SWIGRUNTIME swig_type_info *
+SWIG_Python_TypeQuery(const char *type)
+{
+  PyObject *cache = SWIG_Python_TypeCache();
+  PyObject *key = SWIG_Python_str_FromChar(type); 
+  PyObject *obj = PyDict_GetItem(cache, key);
+  swig_type_info *descriptor;
+  if (obj) {
+    descriptor = (swig_type_info *) PyCapsule_GetPointer(obj, NULL);
+  } else {
+    swig_module_info *swig_module = SWIG_GetModule(0);
+    descriptor = SWIG_TypeQueryModule(swig_module, swig_module, type);
+    if (descriptor) {
+      obj = PyCapsule_New((void*) descriptor, NULL, NULL);
+      PyDict_SetItem(cache, key, obj);
+      Py_DECREF(obj);
+    }
+  }
+  Py_DECREF(key);
+  return descriptor;
+}
+
+/* 
+   For backward compatibility only
+*/
+#define SWIG_POINTER_EXCEPTION  0
+#define SWIG_arg_fail(arg)      SWIG_Python_ArgFail(arg)
+#define SWIG_MustGetPtr(p, type, argnum, flags)  SWIG_Python_MustGetPtr(p, type, argnum, flags)
+
+SWIGRUNTIME int
+SWIG_Python_AddErrMesg(const char* mesg, int infront)
+{  
+  if (PyErr_Occurred()) {
+    PyObject *type = 0;
+    PyObject *value = 0;
+    PyObject *traceback = 0;
+    PyErr_Fetch(&type, &value, &traceback);
+    if (value) {
+      PyObject *old_str = PyObject_Str(value);
+      const char *tmp = SWIG_Python_str_AsChar(old_str);
+      const char *errmesg = tmp ? tmp : "Invalid error message";
+      Py_XINCREF(type);
+      PyErr_Clear();
+      if (infront) {
+	PyErr_Format(type, "%s %s", mesg, errmesg);
+      } else {
+	PyErr_Format(type, "%s %s", errmesg, mesg);
+      }
+      SWIG_Python_str_DelForPy3(tmp);
+      Py_DECREF(old_str);
+    }
+    return 1;
+  } else {
+    return 0;
+  }
+}
+  
+SWIGRUNTIME int
+SWIG_Python_ArgFail(int argnum)
+{
+  if (PyErr_Occurred()) {
+    /* add information about failing argument */
+    char mesg[256];
+    PyOS_snprintf(mesg, sizeof(mesg), "argument number %d:", argnum);
+    return SWIG_Python_AddErrMesg(mesg, 1);
+  } else {
+    return 0;
+  }
+}
+
+SWIGRUNTIMEINLINE const char *
+SwigPyObject_GetDesc(PyObject *self)
+{
+  SwigPyObject *v = (SwigPyObject *)self;
+  swig_type_info *ty = v ? v->ty : 0;
+  return ty ? ty->str : "";
+}
+
+SWIGRUNTIME void
+SWIG_Python_TypeError(const char *type, PyObject *obj)
+{
+  if (type) {
+#if defined(SWIG_COBJECT_TYPES)
+    if (obj && SwigPyObject_Check(obj)) {
+      const char *otype = (const char *) SwigPyObject_GetDesc(obj);
+      if (otype) {
+	PyErr_Format(PyExc_TypeError, "a '%s' is expected, 'SwigPyObject(%s)' is received",
+		     type, otype);
+	return;
+      }
+    } else 
+#endif      
+    {
+      const char *otype = (obj ? obj->ob_type->tp_name : 0); 
+      if (otype) {
+	PyObject *str = PyObject_Str(obj);
+	const char *cstr = str ? SWIG_Python_str_AsChar(str) : 0;
+	if (cstr) {
+	  PyErr_Format(PyExc_TypeError, "a '%s' is expected, '%s(%s)' is received",
+		       type, otype, cstr);
+          SWIG_Python_str_DelForPy3(cstr);
+	} else {
+	  PyErr_Format(PyExc_TypeError, "a '%s' is expected, '%s' is received",
+		       type, otype);
+	}
+	Py_XDECREF(str);
+	return;
+      }
+    }   
+    PyErr_Format(PyExc_TypeError, "a '%s' is expected", type);
+  } else {
+    PyErr_Format(PyExc_TypeError, "unexpected type is received");
+  }
+}
+
+
+/* Convert a pointer value, signal an exception on a type mismatch */
+SWIGRUNTIME void *
+SWIG_Python_MustGetPtr(PyObject *obj, swig_type_info *ty, int SWIGUNUSEDPARM(argnum), int flags) {
+  void *result;
+  if (SWIG_Python_ConvertPtr(obj, &result, ty, flags) == -1) {
+    PyErr_Clear();
+#if SWIG_POINTER_EXCEPTION
+    if (flags) {
+      SWIG_Python_TypeError(SWIG_TypePrettyName(ty), obj);
+      SWIG_Python_ArgFail(argnum);
+    }
+#endif
+  }
+  return result;
+}
+
+#ifdef SWIGPYTHON_BUILTIN
+SWIGRUNTIME int
+SWIG_Python_NonDynamicSetAttr(PyObject *obj, PyObject *name, PyObject *value) {
+  PyTypeObject *tp = obj->ob_type;
+  PyObject *descr;
+  PyObject *encoded_name;
+  descrsetfunc f;
+  int res = -1;
+
+# ifdef Py_USING_UNICODE
+  if (PyString_Check(name)) {
+    name = PyUnicode_Decode(PyString_AsString(name), PyString_Size(name), NULL, NULL);
+    if (!name)
+      return -1;
+  } else if (!PyUnicode_Check(name))
+# else
+  if (!PyString_Check(name))
+# endif
+  {
+    PyErr_Format(PyExc_TypeError, "attribute name must be string, not '%.200s'", name->ob_type->tp_name);
+    return -1;
+  } else {
+    Py_INCREF(name);
+  }
+
+  if (!tp->tp_dict) {
+    if (PyType_Ready(tp) < 0)
+      goto done;
+  }
+
+  descr = _PyType_Lookup(tp, name);
+  f = NULL;
+  if (descr != NULL)
+    f = descr->ob_type->tp_descr_set;
+  if (!f) {
+    if (PyString_Check(name)) {
+      encoded_name = name;
+      Py_INCREF(name);
+    } else {
+      encoded_name = PyUnicode_AsUTF8String(name);
+      if (!encoded_name)
+        return -1;
+    }
+    PyErr_Format(PyExc_AttributeError, "'%.100s' object has no attribute '%.200s'", tp->tp_name, PyString_AsString(encoded_name));
+    Py_DECREF(encoded_name);
+  } else {
+    res = f(descr, obj, value);
+  }
+  
+  done:
+  Py_DECREF(name);
+  return res;
+}
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+
+#define SWIG_exception_fail(code, msg) do { SWIG_Error(code, msg); SWIG_fail; } while(0) 
+
+#define SWIG_contract_assert(expr, msg) if (!(expr)) { SWIG_Error(SWIG_RuntimeError, msg); SWIG_fail; } else 
+
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Method creation and docstring support functions */
+
+SWIGINTERN PyMethodDef *SWIG_PythonGetProxyDoc(const char *name);
+SWIGINTERN PyObject *SWIG_PyInstanceMethod_New(PyObject *SWIGUNUSEDPARM(self), PyObject *func);
+SWIGINTERN PyObject *SWIG_PyStaticMethod_New(PyObject *SWIGUNUSEDPARM(self), PyObject *func);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+  #define SWIG_exception(code, msg) do { SWIG_Error(code, msg); SWIG_fail;; } while(0) 
+
+
+/* -------- TYPES TABLE (BEGIN) -------- */
+
+#define SWIGTYPE_p_Crev swig_types[0]
+#define SWIGTYPE_p_FILE swig_types[1]
+#define SWIGTYPE_p_InvertedListMap swig_types[2]
+#define SWIGTYPE_p_KNNGraph swig_types[3]
+#define SWIGTYPE_p_List swig_types[4]
+#define SWIGTYPE_p_Map swig_types[5]
+#define SWIGTYPE_p_MapLong2Long swig_types[6]
+#define SWIGTYPE_p_Node swig_types[7]
+#define SWIGTYPE_p_PyCallbackIOReader swig_types[8]
+#define SWIGTYPE_p_PyCallbackIOWriter swig_types[9]
+#define SWIGTYPE_p_Search_type_t swig_types[10]
+#define SWIGTYPE_p_T swig_types[11]
+#define SWIGTYPE_p_TI swig_types[12]
+#define SWIGTYPE_p_Type swig_types[13]
+#define SWIGTYPE_p_allocator_type swig_types[14]
+#define SWIGTYPE_p_char swig_types[15]
+#define SWIGTYPE_p_component_t swig_types[16]
+#define SWIGTYPE_p_difference_type swig_types[17]
+#define SWIGTYPE_p_distance_t swig_types[18]
+#define SWIGTYPE_p_double swig_types[19]
+#define SWIGTYPE_p_faiss__AdditiveCoarseQuantizer swig_types[20]
+#define SWIGTYPE_p_faiss__AdditiveQuantizer swig_types[21]
+#define SWIGTYPE_p_faiss__AlignedTableT_float_32_t swig_types[22]
+#define SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t swig_types[23]
+#define SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t swig_types[24]
+#define SWIGTYPE_p_faiss__AlignedTableTightAllocT_float_32_t swig_types[25]
+#define SWIGTYPE_p_faiss__AlignedTableTightAllocT_unsigned_char_32_t swig_types[26]
+#define SWIGTYPE_p_faiss__AlignedTableTightAllocT_unsigned_short_32_t swig_types[27]
+#define SWIGTYPE_p_faiss__ArrayInvertedLists swig_types[28]
+#define SWIGTYPE_p_faiss__AutoTuneCriterion swig_types[29]
+#define SWIGTYPE_p_faiss__BinaryInvertedListScanner swig_types[30]
+#define SWIGTYPE_p_faiss__BitstringReader swig_types[31]
+#define SWIGTYPE_p_faiss__BitstringWriter swig_types[32]
+#define SWIGTYPE_p_faiss__BlockInvertedLists swig_types[33]
+#define SWIGTYPE_p_faiss__BlockInvertedListsIOHook swig_types[34]
+#define SWIGTYPE_p_faiss__BufferList swig_types[35]
+#define SWIGTYPE_p_faiss__BufferedIOReader swig_types[36]
+#define SWIGTYPE_p_faiss__BufferedIOWriter swig_types[37]
+#define SWIGTYPE_p_faiss__CenteringTransform swig_types[38]
+#define SWIGTYPE_p_faiss__Cloner swig_types[39]
+#define SWIGTYPE_p_faiss__Clustering swig_types[40]
+#define SWIGTYPE_p_faiss__Clustering1D swig_types[41]
+#define SWIGTYPE_p_faiss__ClusteringIterationStats swig_types[42]
+#define SWIGTYPE_p_faiss__ClusteringParameters swig_types[43]
+#define SWIGTYPE_p_faiss__DirectMap swig_types[44]
+#define SWIGTYPE_p_faiss__DirectMapAdd swig_types[45]
+#define SWIGTYPE_p_faiss__DistanceComputer swig_types[46]
+#define SWIGTYPE_p_faiss__EnumeratedVectors swig_types[47]
+#define SWIGTYPE_p_faiss__FastScanStats swig_types[48]
+#define SWIGTYPE_p_faiss__FileIOReader swig_types[49]
+#define SWIGTYPE_p_faiss__FileIOWriter swig_types[50]
+#define SWIGTYPE_p_faiss__HNSW swig_types[51]
+#define SWIGTYPE_p_faiss__HNSWStats swig_types[52]
+#define SWIGTYPE_p_faiss__HNSW__MinimaxHeap swig_types[53]
+#define SWIGTYPE_p_faiss__HStackInvertedLists swig_types[54]
+#define SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t swig_types[55]
+#define SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t swig_types[56]
+#define SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t swig_types[57]
+#define SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t swig_types[58]
+#define SWIGTYPE_p_faiss__IDSelector swig_types[59]
+#define SWIGTYPE_p_faiss__IDSelectorArray swig_types[60]
+#define SWIGTYPE_p_faiss__IDSelectorBatch swig_types[61]
+#define SWIGTYPE_p_faiss__IDSelectorRange swig_types[62]
+#define SWIGTYPE_p_faiss__IOReader swig_types[63]
+#define SWIGTYPE_p_faiss__IOWriter swig_types[64]
+#define SWIGTYPE_p_faiss__ITQMatrix swig_types[65]
+#define SWIGTYPE_p_faiss__ITQTransform swig_types[66]
+#define SWIGTYPE_p_faiss__IVFFastScanStats swig_types[67]
+#define SWIGTYPE_p_faiss__IVFPQSearchParameters swig_types[68]
+#define SWIGTYPE_p_faiss__IVFSearchParameters swig_types[69]
+#define SWIGTYPE_p_faiss__Index swig_types[70]
+#define SWIGTYPE_p_faiss__Index2Layer swig_types[71]
+#define SWIGTYPE_p_faiss__IndexAdditiveQuantizer swig_types[72]
+#define SWIGTYPE_p_faiss__IndexBinary swig_types[73]
+#define SWIGTYPE_p_faiss__IndexBinaryFlat swig_types[74]
+#define SWIGTYPE_p_faiss__IndexBinaryFromFloat swig_types[75]
+#define SWIGTYPE_p_faiss__IndexBinaryHNSW swig_types[76]
+#define SWIGTYPE_p_faiss__IndexBinaryHash swig_types[77]
+#define SWIGTYPE_p_faiss__IndexBinaryHashStats swig_types[78]
+#define SWIGTYPE_p_faiss__IndexBinaryIVF swig_types[79]
+#define SWIGTYPE_p_faiss__IndexBinaryMultiHash swig_types[80]
+#define SWIGTYPE_p_faiss__IndexFlat swig_types[81]
+#define SWIGTYPE_p_faiss__IndexFlat1D swig_types[82]
+#define SWIGTYPE_p_faiss__IndexFlatCodes swig_types[83]
+#define SWIGTYPE_p_faiss__IndexFlatIP swig_types[84]
+#define SWIGTYPE_p_faiss__IndexFlatL2 swig_types[85]
+#define SWIGTYPE_p_faiss__IndexHNSW swig_types[86]
+#define SWIGTYPE_p_faiss__IndexHNSW2Level swig_types[87]
+#define SWIGTYPE_p_faiss__IndexHNSWFlat swig_types[88]
+#define SWIGTYPE_p_faiss__IndexHNSWPQ swig_types[89]
+#define SWIGTYPE_p_faiss__IndexHNSWSQ swig_types[90]
+#define SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t swig_types[91]
+#define SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t swig_types[92]
+#define SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t swig_types[93]
+#define SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t swig_types[94]
+#define SWIGTYPE_p_faiss__IndexIVF swig_types[95]
+#define SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer swig_types[96]
+#define SWIGTYPE_p_faiss__IndexIVFFlat swig_types[97]
+#define SWIGTYPE_p_faiss__IndexIVFFlatDedup swig_types[98]
+#define SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer swig_types[99]
+#define SWIGTYPE_p_faiss__IndexIVFPQ swig_types[100]
+#define SWIGTYPE_p_faiss__IndexIVFPQFastScan swig_types[101]
+#define SWIGTYPE_p_faiss__IndexIVFPQR swig_types[102]
+#define SWIGTYPE_p_faiss__IndexIVFPQStats swig_types[103]
+#define SWIGTYPE_p_faiss__IndexIVFResidualQuantizer swig_types[104]
+#define SWIGTYPE_p_faiss__IndexIVFScalarQuantizer swig_types[105]
+#define SWIGTYPE_p_faiss__IndexIVFSpectralHash swig_types[106]
+#define SWIGTYPE_p_faiss__IndexIVFStats swig_types[107]
+#define SWIGTYPE_p_faiss__IndexLSH swig_types[108]
+#define SWIGTYPE_p_faiss__IndexLattice swig_types[109]
+#define SWIGTYPE_p_faiss__IndexLocalSearchQuantizer swig_types[110]
+#define SWIGTYPE_p_faiss__IndexNNDescent swig_types[111]
+#define SWIGTYPE_p_faiss__IndexNNDescentFlat swig_types[112]
+#define SWIGTYPE_p_faiss__IndexNSG swig_types[113]
+#define SWIGTYPE_p_faiss__IndexNSGFlat swig_types[114]
+#define SWIGTYPE_p_faiss__IndexPQ swig_types[115]
+#define SWIGTYPE_p_faiss__IndexPQFastScan swig_types[116]
+#define SWIGTYPE_p_faiss__IndexPQStats swig_types[117]
+#define SWIGTYPE_p_faiss__IndexPreTransform swig_types[118]
+#define SWIGTYPE_p_faiss__IndexRefine swig_types[119]
+#define SWIGTYPE_p_faiss__IndexRefineFlat swig_types[120]
+#define SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t swig_types[121]
+#define SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t swig_types[122]
+#define SWIGTYPE_p_faiss__IndexResidualQuantizer swig_types[123]
+#define SWIGTYPE_p_faiss__IndexScalarQuantizer swig_types[124]
+#define SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t swig_types[125]
+#define SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t swig_types[126]
+#define SWIGTYPE_p_faiss__IndexSplitVectors swig_types[127]
+#define SWIGTYPE_p_faiss__InterruptCallback swig_types[128]
+#define SWIGTYPE_p_faiss__IntersectionCriterion swig_types[129]
+#define SWIGTYPE_p_faiss__InvertedListScanner swig_types[130]
+#define SWIGTYPE_p_faiss__InvertedLists swig_types[131]
+#define SWIGTYPE_p_faiss__InvertedListsIOHook swig_types[132]
+#define SWIGTYPE_p_faiss__Level1Quantizer swig_types[133]
+#define SWIGTYPE_p_faiss__LinearTransform swig_types[134]
+#define SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer swig_types[135]
+#define SWIGTYPE_p_faiss__LocalSearchQuantizer swig_types[136]
+#define SWIGTYPE_p_faiss__LockLevels swig_types[137]
+#define SWIGTYPE_p_faiss__MaskedInvertedLists swig_types[138]
+#define SWIGTYPE_p_faiss__MatrixStats swig_types[139]
+#define SWIGTYPE_p_faiss__MultiIndexQuantizer swig_types[140]
+#define SWIGTYPE_p_faiss__MultiIndexQuantizer2 swig_types[141]
+#define SWIGTYPE_p_faiss__NNDescent swig_types[142]
+#define SWIGTYPE_p_faiss__NSG swig_types[143]
+#define SWIGTYPE_p_faiss__NormalizationTransform swig_types[144]
+#define SWIGTYPE_p_faiss__OPQMatrix swig_types[145]
+#define SWIGTYPE_p_faiss__OnDiskInvertedLists swig_types[146]
+#define SWIGTYPE_p_faiss__OnDiskInvertedListsIOHook swig_types[147]
+#define SWIGTYPE_p_faiss__OnDiskInvertedLists__OngoingPrefetch swig_types[148]
+#define SWIGTYPE_p_faiss__OnDiskOneList swig_types[149]
+#define SWIGTYPE_p_faiss__OneRecallAtRCriterion swig_types[150]
+#define SWIGTYPE_p_faiss__OperatingPoint swig_types[151]
+#define SWIGTYPE_p_faiss__OperatingPoints swig_types[152]
+#define SWIGTYPE_p_faiss__PCAMatrix swig_types[153]
+#define SWIGTYPE_p_faiss__PQDecoder16 swig_types[154]
+#define SWIGTYPE_p_faiss__PQDecoder8 swig_types[155]
+#define SWIGTYPE_p_faiss__PQDecoderGeneric swig_types[156]
+#define SWIGTYPE_p_faiss__PQEncoder16 swig_types[157]
+#define SWIGTYPE_p_faiss__PQEncoder8 swig_types[158]
+#define SWIGTYPE_p_faiss__PQEncoderGeneric swig_types[159]
+#define SWIGTYPE_p_faiss__ParameterRange swig_types[160]
+#define SWIGTYPE_p_faiss__ParameterSpace swig_types[161]
+#define SWIGTYPE_p_faiss__PartitionStats swig_types[162]
+#define SWIGTYPE_p_faiss__PermutationObjective swig_types[163]
+#define SWIGTYPE_p_faiss__PolysemousTraining swig_types[164]
+#define SWIGTYPE_p_faiss__ProductQuantizer swig_types[165]
+#define SWIGTYPE_p_faiss__ProgressiveDimClustering swig_types[166]
+#define SWIGTYPE_p_faiss__ProgressiveDimClusteringParameters swig_types[167]
+#define SWIGTYPE_p_faiss__ProgressiveDimIndexFactory swig_types[168]
+#define SWIGTYPE_p_faiss__RandomGenerator swig_types[169]
+#define SWIGTYPE_p_faiss__RandomRotationMatrix swig_types[170]
+#define SWIGTYPE_p_faiss__RangeQueryResult swig_types[171]
+#define SWIGTYPE_p_faiss__RangeSearchPartialResult swig_types[172]
+#define SWIGTYPE_p_faiss__RangeSearchResult swig_types[173]
+#define SWIGTYPE_p_faiss__ReadOnlyInvertedLists swig_types[174]
+#define SWIGTYPE_p_faiss__ReconstructFromNeighbors swig_types[175]
+#define SWIGTYPE_p_faiss__RemapDimensionsTransform swig_types[176]
+#define SWIGTYPE_p_faiss__Repeat swig_types[177]
+#define SWIGTYPE_p_faiss__Repeats swig_types[178]
+#define SWIGTYPE_p_faiss__ReproduceDistancesObjective swig_types[179]
+#define SWIGTYPE_p_faiss__ResidualCoarseQuantizer swig_types[180]
+#define SWIGTYPE_p_faiss__ResidualQuantizer swig_types[181]
+#define SWIGTYPE_p_faiss__ScalarQuantizer swig_types[182]
+#define SWIGTYPE_p_faiss__ScalarQuantizer__Quantizer swig_types[183]
+#define SWIGTYPE_p_faiss__ScalarQuantizer__SQDistanceComputer swig_types[184]
+#define SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer swig_types[185]
+#define SWIGTYPE_p_faiss__SimulatedAnnealingParameters swig_types[186]
+#define SWIGTYPE_p_faiss__SliceInvertedLists swig_types[187]
+#define SWIGTYPE_p_faiss__StopWordsInvertedLists swig_types[188]
+#define SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t swig_types[189]
+#define SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t swig_types[190]
+#define SWIGTYPE_p_faiss__VStackInvertedLists swig_types[191]
+#define SWIGTYPE_p_faiss__VectorIOReader swig_types[192]
+#define SWIGTYPE_p_faiss__VectorIOWriter swig_types[193]
+#define SWIGTYPE_p_faiss__VectorTransform swig_types[194]
+#define SWIGTYPE_p_faiss__VisitedTable swig_types[195]
+#define SWIGTYPE_p_faiss__ZnSphereCodec swig_types[196]
+#define SWIGTYPE_p_faiss__ZnSphereCodecAlt swig_types[197]
+#define SWIGTYPE_p_faiss__ZnSphereCodecRec swig_types[198]
+#define SWIGTYPE_p_faiss__ZnSphereSearch swig_types[199]
+#define SWIGTYPE_p_faiss__gpu__AllocInfo swig_types[200]
+#define SWIGTYPE_p_faiss__gpu__AllocRequest swig_types[201]
+#define SWIGTYPE_p_faiss__gpu__FlatIndex swig_types[202]
+#define SWIGTYPE_p_faiss__gpu__GpuClonerOptions swig_types[203]
+#define SWIGTYPE_p_faiss__gpu__GpuDistanceParams swig_types[204]
+#define SWIGTYPE_p_faiss__gpu__GpuIcmEncoder swig_types[205]
+#define SWIGTYPE_p_faiss__gpu__GpuIcmEncoderFactory swig_types[206]
+#define SWIGTYPE_p_faiss__gpu__GpuIndex swig_types[207]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat swig_types[208]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlatConfig swig_types[209]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexConfig swig_types[210]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexFlat swig_types[211]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig swig_types[212]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexFlatIP swig_types[213]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexFlatL2 swig_types[214]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexIVF swig_types[215]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexIVFConfig swig_types[216]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat swig_types[217]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlatConfig swig_types[218]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ swig_types[219]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig swig_types[220]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer swig_types[221]
+#define SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig swig_types[222]
+#define SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions swig_types[223]
+#define SWIGTYPE_p_faiss__gpu__GpuParameterSpace swig_types[224]
+#define SWIGTYPE_p_faiss__gpu__GpuProgressiveDimIndexFactory swig_types[225]
+#define SWIGTYPE_p_faiss__gpu__GpuResources swig_types[226]
+#define SWIGTYPE_p_faiss__gpu__GpuResourcesProvider swig_types[227]
+#define SWIGTYPE_p_faiss__gpu__StandardGpuResources swig_types[228]
+#define SWIGTYPE_p_faiss__gpu__StandardGpuResourcesImpl swig_types[229]
+#define SWIGTYPE_p_faiss__gpu__ToCPUCloner swig_types[230]
+#define SWIGTYPE_p_faiss__gpu__ToGpuCloner swig_types[231]
+#define SWIGTYPE_p_faiss__gpu__ToGpuClonerMultiple swig_types[232]
+#define SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow swig_types[233]
+#define SWIGTYPE_p_faiss__lsq__IcmEncoder swig_types[234]
+#define SWIGTYPE_p_faiss__lsq__IcmEncoderFactory swig_types[235]
+#define SWIGTYPE_p_faiss__lsq__LSQTimer swig_types[236]
+#define SWIGTYPE_p_faiss__lsq__LSQTimerScope swig_types[237]
+#define SWIGTYPE_p_faiss__nndescent__Neighbor swig_types[238]
+#define SWIGTYPE_p_faiss__nndescent__Nhood swig_types[239]
+#define SWIGTYPE_p_faiss__nsg__GraphT_faiss__Node_t swig_types[240]
+#define SWIGTYPE_p_faiss__nsg__GraphT_long_t swig_types[241]
+#define SWIGTYPE_p_first_type swig_types[242]
+#define SWIGTYPE_p_float swig_types[243]
+#define SWIGTYPE_p_hipblasHandle_t swig_types[244]
+#define SWIGTYPE_p_idx_t swig_types[245]
+#define SWIGTYPE_p_ihipStream_t swig_types[246]
+#define SWIGTYPE_p_int swig_types[247]
+#define SWIGTYPE_p_key_type swig_types[248]
+#define SWIGTYPE_p_long swig_types[249]
+#define SWIGTYPE_p_mapped_type swig_types[250]
+#define SWIGTYPE_p_omp_lock_t swig_types[251]
+#define SWIGTYPE_p_p_faiss__AdditiveCoarseQuantizer swig_types[252]
+#define SWIGTYPE_p_p_faiss__ArrayInvertedLists swig_types[253]
+#define SWIGTYPE_p_p_faiss__BlockInvertedLists swig_types[254]
+#define SWIGTYPE_p_p_faiss__CenteringTransform swig_types[255]
+#define SWIGTYPE_p_p_faiss__HStackInvertedLists swig_types[256]
+#define SWIGTYPE_p_p_faiss__ITQMatrix swig_types[257]
+#define SWIGTYPE_p_p_faiss__ITQTransform swig_types[258]
+#define SWIGTYPE_p_p_faiss__Index swig_types[259]
+#define SWIGTYPE_p_p_faiss__Index2Layer swig_types[260]
+#define SWIGTYPE_p_p_faiss__IndexAdditiveQuantizer swig_types[261]
+#define SWIGTYPE_p_p_faiss__IndexFlat swig_types[262]
+#define SWIGTYPE_p_p_faiss__IndexFlat1D swig_types[263]
+#define SWIGTYPE_p_p_faiss__IndexFlatCodes swig_types[264]
+#define SWIGTYPE_p_p_faiss__IndexFlatIP swig_types[265]
+#define SWIGTYPE_p_p_faiss__IndexFlatL2 swig_types[266]
+#define SWIGTYPE_p_p_faiss__IndexHNSW swig_types[267]
+#define SWIGTYPE_p_p_faiss__IndexHNSW2Level swig_types[268]
+#define SWIGTYPE_p_p_faiss__IndexHNSWFlat swig_types[269]
+#define SWIGTYPE_p_p_faiss__IndexHNSWPQ swig_types[270]
+#define SWIGTYPE_p_p_faiss__IndexHNSWSQ swig_types[271]
+#define SWIGTYPE_p_p_faiss__IndexIDMap2TemplateT_faiss__Index_t swig_types[272]
+#define SWIGTYPE_p_p_faiss__IndexIDMapTemplateT_faiss__Index_t swig_types[273]
+#define SWIGTYPE_p_p_faiss__IndexIVF swig_types[274]
+#define SWIGTYPE_p_p_faiss__IndexIVFAdditiveQuantizer swig_types[275]
+#define SWIGTYPE_p_p_faiss__IndexIVFFlat swig_types[276]
+#define SWIGTYPE_p_p_faiss__IndexIVFFlatDedup swig_types[277]
+#define SWIGTYPE_p_p_faiss__IndexIVFLocalSearchQuantizer swig_types[278]
+#define SWIGTYPE_p_p_faiss__IndexIVFPQ swig_types[279]
+#define SWIGTYPE_p_p_faiss__IndexIVFPQFastScan swig_types[280]
+#define SWIGTYPE_p_p_faiss__IndexIVFPQR swig_types[281]
+#define SWIGTYPE_p_p_faiss__IndexIVFResidualQuantizer swig_types[282]
+#define SWIGTYPE_p_p_faiss__IndexIVFScalarQuantizer swig_types[283]
+#define SWIGTYPE_p_p_faiss__IndexIVFSpectralHash swig_types[284]
+#define SWIGTYPE_p_p_faiss__IndexLSH swig_types[285]
+#define SWIGTYPE_p_p_faiss__IndexLattice swig_types[286]
+#define SWIGTYPE_p_p_faiss__IndexLocalSearchQuantizer swig_types[287]
+#define SWIGTYPE_p_p_faiss__IndexNNDescent swig_types[288]
+#define SWIGTYPE_p_p_faiss__IndexNNDescentFlat swig_types[289]
+#define SWIGTYPE_p_p_faiss__IndexNSG swig_types[290]
+#define SWIGTYPE_p_p_faiss__IndexNSGFlat swig_types[291]
+#define SWIGTYPE_p_p_faiss__IndexPQ swig_types[292]
+#define SWIGTYPE_p_p_faiss__IndexPQFastScan swig_types[293]
+#define SWIGTYPE_p_p_faiss__IndexPreTransform swig_types[294]
+#define SWIGTYPE_p_p_faiss__IndexRefine swig_types[295]
+#define SWIGTYPE_p_p_faiss__IndexRefineFlat swig_types[296]
+#define SWIGTYPE_p_p_faiss__IndexReplicasTemplateT_faiss__Index_t swig_types[297]
+#define SWIGTYPE_p_p_faiss__IndexResidualQuantizer swig_types[298]
+#define SWIGTYPE_p_p_faiss__IndexScalarQuantizer swig_types[299]
+#define SWIGTYPE_p_p_faiss__IndexShardsTemplateT_faiss__Index_t swig_types[300]
+#define SWIGTYPE_p_p_faiss__IndexSplitVectors swig_types[301]
+#define SWIGTYPE_p_p_faiss__InvertedLists swig_types[302]
+#define SWIGTYPE_p_p_faiss__LinearTransform swig_types[303]
+#define SWIGTYPE_p_p_faiss__LocalSearchCoarseQuantizer swig_types[304]
+#define SWIGTYPE_p_p_faiss__MaskedInvertedLists swig_types[305]
+#define SWIGTYPE_p_p_faiss__MultiIndexQuantizer swig_types[306]
+#define SWIGTYPE_p_p_faiss__MultiIndexQuantizer2 swig_types[307]
+#define SWIGTYPE_p_p_faiss__NormalizationTransform swig_types[308]
+#define SWIGTYPE_p_p_faiss__OPQMatrix swig_types[309]
+#define SWIGTYPE_p_p_faiss__OnDiskInvertedLists swig_types[310]
+#define SWIGTYPE_p_p_faiss__PCAMatrix swig_types[311]
+#define SWIGTYPE_p_p_faiss__RandomRotationMatrix swig_types[312]
+#define SWIGTYPE_p_p_faiss__ReadOnlyInvertedLists swig_types[313]
+#define SWIGTYPE_p_p_faiss__RemapDimensionsTransform swig_types[314]
+#define SWIGTYPE_p_p_faiss__ResidualCoarseQuantizer swig_types[315]
+#define SWIGTYPE_p_p_faiss__SliceInvertedLists swig_types[316]
+#define SWIGTYPE_p_p_faiss__StopWordsInvertedLists swig_types[317]
+#define SWIGTYPE_p_p_faiss__ThreadedIndexT_faiss__Index_t swig_types[318]
+#define SWIGTYPE_p_p_faiss__VStackInvertedLists swig_types[319]
+#define SWIGTYPE_p_p_faiss__VectorTransform swig_types[320]
+#define SWIGTYPE_p_p_faiss__gpu__GpuIndex swig_types[321]
+#define SWIGTYPE_p_p_faiss__gpu__GpuIndexFlat swig_types[322]
+#define SWIGTYPE_p_p_faiss__gpu__GpuIndexFlatIP swig_types[323]
+#define SWIGTYPE_p_p_faiss__gpu__GpuIndexFlatL2 swig_types[324]
+#define SWIGTYPE_p_p_faiss__gpu__GpuIndexIVF swig_types[325]
+#define SWIGTYPE_p_p_faiss__gpu__GpuIndexIVFFlat swig_types[326]
+#define SWIGTYPE_p_p_faiss__gpu__GpuIndexIVFPQ swig_types[327]
+#define SWIGTYPE_p_p_faiss__gpu__GpuIndexIVFScalarQuantizer swig_types[328]
+#define SWIGTYPE_p_p_faiss__gpu__GpuResourcesProvider swig_types[329]
+#define SWIGTYPE_p_p_faiss__gpu__StandardGpuResources swig_types[330]
+#define SWIGTYPE_p_second_type swig_types[331]
+#define SWIGTYPE_p_short swig_types[332]
+#define SWIGTYPE_p_signed_char swig_types[333]
+#define SWIGTYPE_p_size_type swig_types[334]
+#define SWIGTYPE_p_std__functionT_void_fint_faiss__IndexBinary_const_pF_t swig_types[335]
+#define SWIGTYPE_p_std__functionT_void_fint_faiss__IndexBinary_pF_t swig_types[336]
+#define SWIGTYPE_p_std__functionT_void_fint_faiss__Index_const_pF_t swig_types[337]
+#define SWIGTYPE_p_std__functionT_void_fint_faiss__Index_pF_t swig_types[338]
+#define SWIGTYPE_p_std__invalid_argument swig_types[339]
+#define SWIGTYPE_p_std__listT_faiss__OnDiskInvertedLists__Slot_t swig_types[340]
+#define SWIGTYPE_p_std__mt19937 swig_types[341]
+#define SWIGTYPE_p_std__pairT_float_int_t swig_types[342]
+#define SWIGTYPE_p_std__pairT_void_p_unsigned_long_t swig_types[343]
+#define SWIGTYPE_p_std__priority_queueT_faiss__HNSW__NodeDistFarther_t swig_types[344]
+#define SWIGTYPE_p_std__priority_queueT_std__pairT_float_int_t_t swig_types[345]
+#define SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t swig_types[346]
+#define SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t swig_types[347]
+#define SWIGTYPE_p_std__shared_ptrT_faiss__nsg__GraphT_int_t_t swig_types[348]
+#define SWIGTYPE_p_std__unordered_mapT_long_faiss__IndexBinaryHash__InvertedList_t swig_types[349]
+#define SWIGTYPE_p_std__unordered_mapT_long_long_t swig_types[350]
+#define SWIGTYPE_p_std__unordered_mapT_std__string_double_t swig_types[351]
+#define SWIGTYPE_p_std__unordered_mapT_unsigned_long_faiss__MatrixStats__Occurrence_t swig_types[352]
+#define SWIGTYPE_p_std__unordered_multimapT_long_long_t swig_types[353]
+#define SWIGTYPE_p_std__vectorT_char_t swig_types[354]
+#define SWIGTYPE_p_std__vectorT_double_t swig_types[355]
+#define SWIGTYPE_p_std__vectorT_faiss__AlignedTableT_uint8_t_32_t_t swig_types[356]
+#define SWIGTYPE_p_std__vectorT_faiss__BufferList__Buffer_t swig_types[357]
+#define SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t swig_types[358]
+#define SWIGTYPE_p_std__vectorT_faiss__HNSW__NodeDistFarther_t swig_types[359]
+#define SWIGTYPE_p_std__vectorT_faiss__Index_p_t swig_types[360]
+#define SWIGTYPE_p_std__vectorT_faiss__InvertedLists_const_p_t swig_types[361]
+#define SWIGTYPE_p_std__vectorT_faiss__InvertedLists_p_t swig_types[362]
+#define SWIGTYPE_p_std__vectorT_faiss__MatrixStats__PerDimStats_t swig_types[363]
+#define SWIGTYPE_p_std__vectorT_faiss__Node_t swig_types[364]
+#define SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t swig_types[365]
+#define SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t swig_types[366]
+#define SWIGTYPE_p_std__vectorT_faiss__ParameterRange_t swig_types[367]
+#define SWIGTYPE_p_std__vectorT_faiss__RangeQueryResult_t swig_types[368]
+#define SWIGTYPE_p_std__vectorT_faiss__RangeSearchPartialResult_p_t swig_types[369]
+#define SWIGTYPE_p_std__vectorT_faiss__Repeat_t swig_types[370]
+#define SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t swig_types[371]
+#define SWIGTYPE_p_std__vectorT_faiss__ZnSphereCodec__CodeSegment_t swig_types[372]
+#define SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t swig_types[373]
+#define SWIGTYPE_p_std__vectorT_faiss__gpu__ToGpuCloner_t swig_types[374]
+#define SWIGTYPE_p_std__vectorT_faiss__nndescent__Neighbor_t swig_types[375]
+#define SWIGTYPE_p_std__vectorT_faiss__nndescent__Nhood_t swig_types[376]
+#define SWIGTYPE_p_std__vectorT_float_t swig_types[377]
+#define SWIGTYPE_p_std__vectorT_ihipStream_t_p_t swig_types[378]
+#define SWIGTYPE_p_std__vectorT_int_t swig_types[379]
+#define SWIGTYPE_p_std__vectorT_long_t swig_types[380]
+#define SWIGTYPE_p_std__vectorT_omp_lock_t_t swig_types[381]
+#define SWIGTYPE_p_std__vectorT_short_t swig_types[382]
+#define SWIGTYPE_p_std__vectorT_signed_char_t swig_types[383]
+#define SWIGTYPE_p_std__vectorT_std__mutex_t swig_types[384]
+#define SWIGTYPE_p_std__vectorT_std__unordered_mapT_long_std__vectorT_int64_t_t_t_t swig_types[385]
+#define SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t swig_types[386]
+#define SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t swig_types[387]
+#define SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t swig_types[388]
+#define SWIGTYPE_p_std__vectorT_std__vectorT_uint64_t_t_t swig_types[389]
+#define SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t swig_types[390]
+#define SWIGTYPE_p_std__vectorT_unsigned_char_t swig_types[391]
+#define SWIGTYPE_p_std__vectorT_unsigned_int_t swig_types[392]
+#define SWIGTYPE_p_std__vectorT_unsigned_long_t swig_types[393]
+#define SWIGTYPE_p_std__vectorT_unsigned_short_t swig_types[394]
+#define SWIGTYPE_p_storage_idx_t swig_types[395]
+#define SWIGTYPE_p_swig__SwigPyIterator swig_types[396]
+#define SWIGTYPE_p_unsigned_char swig_types[397]
+#define SWIGTYPE_p_unsigned_int swig_types[398]
+#define SWIGTYPE_p_unsigned_long swig_types[399]
+#define SWIGTYPE_p_unsigned_short swig_types[400]
+#define SWIGTYPE_p_value_type swig_types[401]
+#define SWIGTYPE_p_void swig_types[402]
+static swig_type_info *swig_types[404];
+static swig_module_info swig_module = {swig_types, 403, 0, 0, 0, 0};
+#define SWIG_TypeQuery(name) SWIG_TypeQueryModule(&swig_module, &swig_module, name)
+#define SWIG_MangledTypeQuery(name) SWIG_MangledTypeQueryModule(&swig_module, &swig_module, name)
+
+/* -------- TYPES TABLE (END) -------- */
+
+#ifdef SWIG_TypeQuery
+# undef SWIG_TypeQuery
+#endif
+#define SWIG_TypeQuery SWIG_Python_TypeQuery
+
+/*-----------------------------------------------
+              @(target):= _swigfaiss.so
+  ------------------------------------------------*/
+#if PY_VERSION_HEX >= 0x03000000
+#  define SWIG_init    PyInit__swigfaiss
+
+#else
+#  define SWIG_init    init_swigfaiss
+
+#endif
+#define SWIG_name    "_swigfaiss"
+
+#define SWIGVERSION 0x040002 
+#define SWIG_VERSION SWIGVERSION
+
+
+#define SWIG_as_voidptr(a) const_cast< void * >(static_cast< const void * >(a)) 
+#define SWIG_as_voidptrptr(a) ((void)SWIG_as_voidptr(*a),reinterpret_cast< void** >(a)) 
+
+
+#include <stdexcept>
+
+
+namespace swig {
+  class SwigPtr_PyObject {
+  protected:
+    PyObject *_obj;
+
+  public:
+    SwigPtr_PyObject() :_obj(0)
+    {
+    }
+
+    SwigPtr_PyObject(const SwigPtr_PyObject& item) : _obj(item._obj)
+    {
+      SWIG_PYTHON_THREAD_BEGIN_BLOCK;
+      Py_XINCREF(_obj);      
+      SWIG_PYTHON_THREAD_END_BLOCK;
+    }
+    
+    SwigPtr_PyObject(PyObject *obj, bool initial_ref = true) :_obj(obj)
+    {
+      if (initial_ref) {
+        SWIG_PYTHON_THREAD_BEGIN_BLOCK;
+        Py_XINCREF(_obj);
+        SWIG_PYTHON_THREAD_END_BLOCK;
+      }
+    }
+    
+    SwigPtr_PyObject & operator=(const SwigPtr_PyObject& item) 
+    {
+      SWIG_PYTHON_THREAD_BEGIN_BLOCK;
+      Py_XINCREF(item._obj);
+      Py_XDECREF(_obj);
+      _obj = item._obj;
+      SWIG_PYTHON_THREAD_END_BLOCK;
+      return *this;      
+    }
+    
+    ~SwigPtr_PyObject() 
+    {
+      SWIG_PYTHON_THREAD_BEGIN_BLOCK;
+      Py_XDECREF(_obj);
+      SWIG_PYTHON_THREAD_END_BLOCK;
+    }
+    
+    operator PyObject *() const
+    {
+      return _obj;
+    }
+
+    PyObject *operator->() const
+    {
+      return _obj;
+    }
+  };
+}
+
+
+namespace swig {
+  struct SwigVar_PyObject : SwigPtr_PyObject {
+    SwigVar_PyObject(PyObject* obj = 0) : SwigPtr_PyObject(obj, false) { }
+    
+    SwigVar_PyObject & operator = (PyObject* obj)
+    {
+      Py_XDECREF(_obj);
+      _obj = obj;
+      return *this;      
+    }
+  };
+}
+
+
+#include <stdint.h>		// Use the C99 official header
+
+
+#define SWIGWORDSIZE64
+#ifndef LONG_MAX
+#include <limits.h>
+#endif
+#if (__WORDSIZE == 32) || (LONG_MAX == INT_MAX)
+# error "SWIG wrapped code invalid in 32 bit architecture, regenerate code using -DSWIGWORDSIZE32"
+#endif
+
+
+
+
+#include <stdint.h>
+#include <omp.h>
+
+
+
+#ifdef SWIGPYTHON
+
+#undef popcount64
+
+#define SWIG_FILE_WITH_INIT
+#define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION
+#include <numpy/arrayobject.h>
+
+#endif
+
+
+#include <faiss/IndexFlat.h>
+#include <faiss/VectorTransform.h>
+#include <faiss/IndexPreTransform.h>
+#include <faiss/IndexLSH.h>
+#include <faiss/IndexPQ.h>
+#include <faiss/IndexAdditiveQuantizer.h>
+#include <faiss/IndexIVF.h>
+#include <faiss/IndexIVFPQ.h>
+#include <faiss/Index2Layer.h>
+#include <faiss/IndexIVFPQR.h>
+#include <faiss/IndexIVFFlat.h>
+
+#include <faiss/IndexPQFastScan.h>
+#include <faiss/IndexIVFPQFastScan.h>
+#include <faiss/utils/quantize_lut.h>
+
+#include <faiss/IndexScalarQuantizer.h>
+#include <faiss/IndexIVFAdditiveQuantizer.h>
+#include <faiss/IndexIVFSpectralHash.h>
+#include <faiss/impl/ThreadedIndex.h>
+#include <faiss/IndexShards.h>
+#include <faiss/IndexReplicas.h>
+#include <faiss/impl/HNSW.h>
+#include <faiss/IndexHNSW.h>
+
+#include <faiss/impl/kmeans1d.h>
+
+#include <faiss/impl/NNDescent.h>
+#include <faiss/IndexNNDescent.h>
+
+#include <faiss/impl/NSG.h>
+#include <faiss/IndexNSG.h>
+
+#include <faiss/MetaIndexes.h>
+#include <faiss/IndexRefine.h>
+
+#include <faiss/impl/FaissAssert.h>
+
+#include <faiss/IndexBinaryFlat.h>
+#include <faiss/IndexBinaryIVF.h>
+#include <faiss/IndexBinaryFromFloat.h>
+#include <faiss/IndexBinaryHNSW.h>
+#include <faiss/IndexBinaryHash.h>
+
+#include <faiss/impl/io.h>
+#include <faiss/index_io.h>
+#include <faiss/clone_index.h>
+
+#include <faiss/IVFlib.h>
+#include <faiss/utils/utils.h>
+#include <faiss/utils/distances.h>
+#include <faiss/utils/extra_distances.h>
+#include <faiss/utils/random.h>
+#include <faiss/utils/Heap.h>
+#include <faiss/utils/AlignedTable.h>
+#include <faiss/utils/partitioning.h>
+#include <faiss/impl/AuxIndexStructures.h>
+#include <faiss/impl/AdditiveQuantizer.h>
+#include <faiss/impl/ResidualQuantizer.h>
+#include <faiss/impl/LocalSearchQuantizer.h>
+
+#include <faiss/invlists/BlockInvertedLists.h>
+
+#ifndef _MSC_VER
+#include <faiss/invlists/OnDiskInvertedLists.h>
+#endif // !_MSC_VER
+
+#include <faiss/Clustering.h>
+
+#include <faiss/utils/hamming.h>
+
+#include <faiss/AutoTune.h>
+#include <faiss/MatrixStats.h>
+#include <faiss/index_factory.h>
+
+#include <faiss/impl/lattice_Zn.h>
+#include <faiss/IndexLattice.h>
+
+
+
+
+#include <string>
+
+
+#include <typeinfo>
+#include <stdexcept>
+
+
+#if defined(__GNUC__)
+#  if __GNUC__ == 2 && __GNUC_MINOR <= 96
+#     define SWIG_STD_NOMODERN_STL
+#  endif
+#endif
+
+
+#include <stddef.h>
+
+
+#include <utility>
+
+
+#include <iostream>
+
+#if PY_VERSION_HEX >= 0x03020000
+# define SWIGPY_SLICE_ARG(obj) ((PyObject*) (obj))
+#else
+# define SWIGPY_SLICE_ARG(obj) ((PySliceObject*) (obj))
+#endif
+
+
+namespace swig {
+  struct stop_iteration {
+  };
+
+  struct SwigPyIterator {
+  private:
+    SwigPtr_PyObject _seq;
+
+  protected:
+    SwigPyIterator(PyObject *seq) : _seq(seq)
+    {
+    }
+      
+  public:
+    virtual ~SwigPyIterator() {}
+
+    // Access iterator method, required by Python
+    virtual PyObject *value() const = 0;
+
+    // Forward iterator method, required by Python
+    virtual SwigPyIterator *incr(size_t n = 1) = 0;
+    
+    // Backward iterator method, very common in C++, but not required in Python
+    virtual SwigPyIterator *decr(size_t /*n*/ = 1)
+    {
+      throw stop_iteration();
+    }
+
+    // Random access iterator methods, but not required in Python
+    virtual ptrdiff_t distance(const SwigPyIterator &/*x*/) const
+    {
+      throw std::invalid_argument("operation not supported");
+    }
+
+    virtual bool equal (const SwigPyIterator &/*x*/) const
+    {
+      throw std::invalid_argument("operation not supported");
+    }
+    
+    // C++ common/needed methods
+    virtual SwigPyIterator *copy() const = 0;
+
+    PyObject *next()     
+    {
+      SWIG_PYTHON_THREAD_BEGIN_BLOCK; // disable threads       
+      PyObject *obj = value();
+      incr();       
+      SWIG_PYTHON_THREAD_END_BLOCK; // re-enable threads
+      return obj;     
+    }
+
+    /* Make an alias for Python 3.x */
+    PyObject *__next__()
+    {
+      return next();
+    }
+
+    PyObject *previous()
+    {
+      SWIG_PYTHON_THREAD_BEGIN_BLOCK; // disable threads       
+      decr();
+      PyObject *obj = value();
+      SWIG_PYTHON_THREAD_END_BLOCK; // re-enable threads       
+      return obj;
+    }
+
+    SwigPyIterator *advance(ptrdiff_t n)
+    {
+      return  (n > 0) ?  incr(n) : decr(-n);
+    }
+      
+    bool operator == (const SwigPyIterator& x)  const
+    {
+      return equal(x);
+    }
+      
+    bool operator != (const SwigPyIterator& x) const
+    {
+      return ! operator==(x);
+    }
+      
+    SwigPyIterator& operator += (ptrdiff_t n)
+    {
+      return *advance(n);
+    }
+
+    SwigPyIterator& operator -= (ptrdiff_t n)
+    {
+      return *advance(-n);
+    }
+      
+    SwigPyIterator* operator + (ptrdiff_t n) const
+    {
+      return copy()->advance(n);
+    }
+
+    SwigPyIterator* operator - (ptrdiff_t n) const
+    {
+      return copy()->advance(-n);
+    }
+      
+    ptrdiff_t operator - (const SwigPyIterator& x) const
+    {
+      return x.distance(*this);
+    }
+      
+    static swig_type_info* descriptor() {
+      static int init = 0;
+      static swig_type_info* desc = 0;
+      if (!init) {
+	desc = SWIG_TypeQuery("swig::SwigPyIterator *");
+	init = 1;
+      }	
+      return desc;
+    }    
+  };
+
+#if defined(SWIGPYTHON_BUILTIN)
+  inline PyObject* make_output_iterator_builtin (PyObject *pyself)
+  {
+    Py_INCREF(pyself);
+    return pyself;
+  }
+#endif
+}
+
+
+SWIGINTERN int
+SWIG_AsVal_double (PyObject *obj, double *val)
+{
+  int res = SWIG_TypeError;
+  if (PyFloat_Check(obj)) {
+    if (val) *val = PyFloat_AsDouble(obj);
+    return SWIG_OK;
+#if PY_VERSION_HEX < 0x03000000
+  } else if (PyInt_Check(obj)) {
+    if (val) *val = (double) PyInt_AsLong(obj);
+    return SWIG_OK;
+#endif
+  } else if (PyLong_Check(obj)) {
+    double v = PyLong_AsDouble(obj);
+    if (!PyErr_Occurred()) {
+      if (val) *val = v;
+      return SWIG_OK;
+    } else {
+      PyErr_Clear();
+    }
+  }
+#ifdef SWIG_PYTHON_CAST_MODE
+  {
+    int dispatch = 0;
+    double d = PyFloat_AsDouble(obj);
+    if (!PyErr_Occurred()) {
+      if (val) *val = d;
+      return SWIG_AddCast(SWIG_OK);
+    } else {
+      PyErr_Clear();
+    }
+    if (!dispatch) {
+      long v = PyLong_AsLong(obj);
+      if (!PyErr_Occurred()) {
+	if (val) *val = v;
+	return SWIG_AddCast(SWIG_AddCast(SWIG_OK));
+      } else {
+	PyErr_Clear();
+      }
+    }
+  }
+#endif
+  return res;
+}
+
+
+#include <float.h>
+
+
+#include <math.h>
+
+
+SWIGINTERNINLINE int
+SWIG_CanCastAsInteger(double *d, double min, double max) {
+  double x = *d;
+  if ((min <= x && x <= max)) {
+   double fx = floor(x);
+   double cx = ceil(x);
+   double rd =  ((x - fx) < 0.5) ? fx : cx; /* simple rint */
+   if ((errno == EDOM) || (errno == ERANGE)) {
+     errno = 0;
+   } else {
+     double summ, reps, diff;
+     if (rd < x) {
+       diff = x - rd;
+     } else if (rd > x) {
+       diff = rd - x;
+     } else {
+       return 1;
+     }
+     summ = rd + x;
+     reps = diff/summ;
+     if (reps < 8*DBL_EPSILON) {
+       *d = rd;
+       return 1;
+     }
+   }
+  }
+  return 0;
+}
+
+
+SWIGINTERN int
+SWIG_AsVal_unsigned_SS_long (PyObject *obj, unsigned long *val) 
+{
+#if PY_VERSION_HEX < 0x03000000
+  if (PyInt_Check(obj)) {
+    long v = PyInt_AsLong(obj);
+    if (v >= 0) {
+      if (val) *val = v;
+      return SWIG_OK;
+    } else {
+      return SWIG_OverflowError;
+    }
+  } else
+#endif
+  if (PyLong_Check(obj)) {
+    unsigned long v = PyLong_AsUnsignedLong(obj);
+    if (!PyErr_Occurred()) {
+      if (val) *val = v;
+      return SWIG_OK;
+    } else {
+      PyErr_Clear();
+      return SWIG_OverflowError;
+    }
+  }
+#ifdef SWIG_PYTHON_CAST_MODE
+  {
+    int dispatch = 0;
+    unsigned long v = PyLong_AsUnsignedLong(obj);
+    if (!PyErr_Occurred()) {
+      if (val) *val = v;
+      return SWIG_AddCast(SWIG_OK);
+    } else {
+      PyErr_Clear();
+    }
+    if (!dispatch) {
+      double d;
+      int res = SWIG_AddCast(SWIG_AsVal_double (obj,&d));
+      if (SWIG_IsOK(res) && SWIG_CanCastAsInteger(&d, 0, ULONG_MAX)) {
+	if (val) *val = (unsigned long)(d);
+	return res;
+      }
+    }
+  }
+#endif
+  return SWIG_TypeError;
+}
+
+
+#include <limits.h>
+#if !defined(SWIG_NO_LLONG_MAX)
+# if !defined(LLONG_MAX) && defined(__GNUC__) && defined (__LONG_LONG_MAX__)
+#   define LLONG_MAX __LONG_LONG_MAX__
+#   define LLONG_MIN (-LLONG_MAX - 1LL)
+#   define ULLONG_MAX (LLONG_MAX * 2ULL + 1ULL)
+# endif
+#endif
+
+
+#if defined(LLONG_MAX) && !defined(SWIG_LONG_LONG_AVAILABLE)
+#  define SWIG_LONG_LONG_AVAILABLE
+#endif
+
+
+#ifdef SWIG_LONG_LONG_AVAILABLE
+SWIGINTERN int
+SWIG_AsVal_unsigned_SS_long_SS_long (PyObject *obj, unsigned long long *val)
+{
+  int res = SWIG_TypeError;
+  if (PyLong_Check(obj)) {
+    unsigned long long v = PyLong_AsUnsignedLongLong(obj);
+    if (!PyErr_Occurred()) {
+      if (val) *val = v;
+      return SWIG_OK;
+    } else {
+      PyErr_Clear();
+      res = SWIG_OverflowError;
+    }
+  } else {
+    unsigned long v;
+    res = SWIG_AsVal_unsigned_SS_long (obj,&v);
+    if (SWIG_IsOK(res)) {
+      if (val) *val = v;
+      return res;
+    }
+  }
+#ifdef SWIG_PYTHON_CAST_MODE
+  {
+    const double mant_max = 1LL << DBL_MANT_DIG;
+    double d;
+    res = SWIG_AsVal_double (obj,&d);
+    if (SWIG_IsOK(res) && !SWIG_CanCastAsInteger(&d, 0, mant_max))
+      return SWIG_OverflowError;
+    if (SWIG_IsOK(res) && SWIG_CanCastAsInteger(&d, 0, mant_max)) {
+      if (val) *val = (unsigned long long)(d);
+      return SWIG_AddCast(res);
+    }
+    res = SWIG_TypeError;
+  }
+#endif
+  return res;
+}
+#endif
+
+
+SWIGINTERNINLINE int
+SWIG_AsVal_size_t (PyObject * obj, size_t *val)
+{
+  int res = SWIG_TypeError;
+#ifdef SWIG_LONG_LONG_AVAILABLE
+  if (sizeof(size_t) <= sizeof(unsigned long)) {
+#endif
+    unsigned long v;
+    res = SWIG_AsVal_unsigned_SS_long (obj, val ? &v : 0);
+    if (SWIG_IsOK(res) && val) *val = static_cast< size_t >(v);
+#ifdef SWIG_LONG_LONG_AVAILABLE
+  } else if (sizeof(size_t) <= sizeof(unsigned long long)) {
+    unsigned long long v;
+    res = SWIG_AsVal_unsigned_SS_long_SS_long (obj, val ? &v : 0);
+    if (SWIG_IsOK(res) && val) *val = static_cast< size_t >(v);
+  }
+#endif
+  return res;
+}
+
+
+  #define SWIG_From_long   PyInt_FromLong 
+
+
+#ifdef SWIG_LONG_LONG_AVAILABLE
+SWIGINTERNINLINE PyObject* 
+SWIG_From_long_SS_long  (long long value)
+{
+  return ((value < LONG_MIN) || (value > LONG_MAX)) ?
+    PyLong_FromLongLong(value) : PyInt_FromLong(static_cast< long >(value));
+}
+#endif
+
+
+SWIGINTERNINLINE PyObject *
+SWIG_From_ptrdiff_t  (ptrdiff_t value)
+{    
+#ifdef SWIG_LONG_LONG_AVAILABLE
+  if (sizeof(ptrdiff_t) <= sizeof(long)) {
+#endif
+    return SWIG_From_long  (static_cast< long >(value));
+#ifdef SWIG_LONG_LONG_AVAILABLE
+  } else {
+    /* assume sizeof(ptrdiff_t) <= sizeof(long long) */
+    return SWIG_From_long_SS_long  (static_cast< long long >(value));
+  }
+#endif
+}
+
+
+SWIGINTERNINLINE PyObject*
+  SWIG_From_bool  (bool value)
+{
+  return PyBool_FromLong(value ? 1 : 0);
+}
+
+
+SWIGINTERN int
+SWIG_AsVal_long (PyObject *obj, long* val)
+{
+#if PY_VERSION_HEX < 0x03000000
+  if (PyInt_Check(obj)) {
+    if (val) *val = PyInt_AsLong(obj);
+    return SWIG_OK;
+  } else
+#endif
+  if (PyLong_Check(obj)) {
+    long v = PyLong_AsLong(obj);
+    if (!PyErr_Occurred()) {
+      if (val) *val = v;
+      return SWIG_OK;
+    } else {
+      PyErr_Clear();
+      return SWIG_OverflowError;
+    }
+  }
+#ifdef SWIG_PYTHON_CAST_MODE
+  {
+    int dispatch = 0;
+    long v = PyInt_AsLong(obj);
+    if (!PyErr_Occurred()) {
+      if (val) *val = v;
+      return SWIG_AddCast(SWIG_OK);
+    } else {
+      PyErr_Clear();
+    }
+    if (!dispatch) {
+      double d;
+      int res = SWIG_AddCast(SWIG_AsVal_double (obj,&d));
+      if (SWIG_IsOK(res) && SWIG_CanCastAsInteger(&d, LONG_MIN, LONG_MAX)) {
+	if (val) *val = (long)(d);
+	return res;
+      }
+    }
+  }
+#endif
+  return SWIG_TypeError;
+}
+
+
+#ifdef SWIG_LONG_LONG_AVAILABLE
+SWIGINTERN int
+SWIG_AsVal_long_SS_long (PyObject *obj, long long *val)
+{
+  int res = SWIG_TypeError;
+  if (PyLong_Check(obj)) {
+    long long v = PyLong_AsLongLong(obj);
+    if (!PyErr_Occurred()) {
+      if (val) *val = v;
+      return SWIG_OK;
+    } else {
+      PyErr_Clear();
+      res = SWIG_OverflowError;
+    }
+  } else {
+    long v;
+    res = SWIG_AsVal_long (obj,&v);
+    if (SWIG_IsOK(res)) {
+      if (val) *val = v;
+      return res;
+    }
+  }
+#ifdef SWIG_PYTHON_CAST_MODE
+  {
+    const double mant_max = 1LL << DBL_MANT_DIG;
+    const double mant_min = -mant_max;
+    double d;
+    res = SWIG_AsVal_double (obj,&d);
+    if (SWIG_IsOK(res) && !SWIG_CanCastAsInteger(&d, mant_min, mant_max))
+      return SWIG_OverflowError;
+    if (SWIG_IsOK(res) && SWIG_CanCastAsInteger(&d, mant_min, mant_max)) {
+      if (val) *val = (long long)(d);
+      return SWIG_AddCast(res);
+    }
+    res = SWIG_TypeError;
+  }
+#endif
+  return res;
+}
+#endif
+
+
+SWIGINTERNINLINE int
+SWIG_AsVal_ptrdiff_t (PyObject * obj, ptrdiff_t *val)
+{
+  int res = SWIG_TypeError;
+#ifdef SWIG_LONG_LONG_AVAILABLE
+  if (sizeof(ptrdiff_t) <= sizeof(long)) {
+#endif
+    long v;
+    res = SWIG_AsVal_long (obj, val ? &v : 0);
+    if (SWIG_IsOK(res) && val) *val = static_cast< ptrdiff_t >(v);
+#ifdef SWIG_LONG_LONG_AVAILABLE
+  } else if (sizeof(ptrdiff_t) <= sizeof(long long)) {
+    long long v;
+    res = SWIG_AsVal_long_SS_long (obj, val ? &v : 0);
+    if (SWIG_IsOK(res) && val) *val = static_cast< ptrdiff_t >(v);
+  }
+#endif
+  return res;
+}
+
+
+#include <algorithm>
+
+
+#include <map>
+
+
+#include <algorithm>
+
+
+SWIGINTERNINLINE PyObject*
+  SWIG_From_int  (int value)
+{
+  return PyInt_FromLong((long) value);
+}
+
+
+/* Getting isfinite working pre C99 across multiple platforms is non-trivial. Users can provide SWIG_isfinite on older platforms. */
+#ifndef SWIG_isfinite
+/* isfinite() is a macro for C99 */
+# if defined(isfinite)
+#  define SWIG_isfinite(X) (isfinite(X))
+# elif defined(__cplusplus) && __cplusplus >= 201103L
+/* Use a template so that this works whether isfinite() is std::isfinite() or
+ * in the global namespace.  The reality seems to vary between compiler
+ * versions.
+ *
+ * Make sure namespace std exists to avoid compiler warnings.
+ *
+ * extern "C++" is required as this fragment can end up inside an extern "C" { } block
+ */
+namespace std { }
+extern "C++" template<typename T>
+inline int SWIG_isfinite_func(T x) {
+  using namespace std;
+  return isfinite(x);
+}
+#  define SWIG_isfinite(X) (SWIG_isfinite_func(X))
+# elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 2))
+#  define SWIG_isfinite(X) (__builtin_isfinite(X))
+# elif defined(__clang__) && defined(__has_builtin)
+#  if __has_builtin(__builtin_isfinite)
+#   define SWIG_isfinite(X) (__builtin_isfinite(X))
+#  endif
+# elif defined(_MSC_VER)
+#  define SWIG_isfinite(X) (_finite(X))
+# elif defined(__sun) && defined(__SVR4)
+#  include <ieeefp.h>
+#  define SWIG_isfinite(X) (finite(X))
+# endif
+#endif
+
+
+/* Accept infinite as a valid float value unless we are unable to check if a value is finite */
+#ifdef SWIG_isfinite
+# define SWIG_Float_Overflow_Check(X) ((X < -FLT_MAX || X > FLT_MAX) && SWIG_isfinite(X))
+#else
+# define SWIG_Float_Overflow_Check(X) ((X < -FLT_MAX || X > FLT_MAX))
+#endif
+
+
+SWIGINTERN int
+SWIG_AsVal_float (PyObject * obj, float *val)
+{
+  double v;
+  int res = SWIG_AsVal_double (obj, &v);
+  if (SWIG_IsOK(res)) {
+    if (SWIG_Float_Overflow_Check(v)) {
+      return SWIG_OverflowError;
+    } else {
+      if (val) *val = static_cast< float >(v);
+    }
+  }  
+  return res;
+}
+
+
+SWIGINTERNINLINE PyObject* 
+SWIG_From_unsigned_SS_long  (unsigned long value)
+{
+  return (value > LONG_MAX) ?
+    PyLong_FromUnsignedLong(value) : PyInt_FromLong(static_cast< long >(value));
+}
+
+
+#ifdef SWIG_LONG_LONG_AVAILABLE
+SWIGINTERNINLINE PyObject* 
+SWIG_From_unsigned_SS_long_SS_long  (unsigned long long value)
+{
+  return (value > LONG_MAX) ?
+    PyLong_FromUnsignedLongLong(value) : PyInt_FromLong(static_cast< long >(value));
+}
+#endif
+
+
+SWIGINTERNINLINE PyObject *
+SWIG_From_size_t  (size_t value)
+{    
+#ifdef SWIG_LONG_LONG_AVAILABLE
+  if (sizeof(size_t) <= sizeof(unsigned long)) {
+#endif
+    return SWIG_From_unsigned_SS_long  (static_cast< unsigned long >(value));
+#ifdef SWIG_LONG_LONG_AVAILABLE
+  } else {
+    /* assume sizeof(size_t) <= sizeof(unsigned long long) */
+    return SWIG_From_unsigned_SS_long_SS_long  (static_cast< unsigned long long >(value));
+  }
+#endif
+}
+
+
+  #define SWIG_From_double   PyFloat_FromDouble 
+
+
+SWIGINTERNINLINE PyObject *
+SWIG_From_float  (float value)
+{    
+  return SWIG_From_double  (value);
+}
+
+
+SWIGINTERN int
+SWIG_AsVal_signed_SS_char (PyObject * obj, signed char *val)
+{
+  long v;
+  int res = SWIG_AsVal_long (obj, &v);
+  if (SWIG_IsOK(res)) {
+    if ((v < SCHAR_MIN || v > SCHAR_MAX)) {
+      return SWIG_OverflowError;
+    } else {
+      if (val) *val = static_cast< signed char >(v);
+    }
+  }  
+  return res;
+}
+
+
+SWIGINTERNINLINE PyObject *
+SWIG_From_signed_SS_char  (signed char value)
+{    
+  return SWIG_From_long  (value);
+}
+
+
+SWIGINTERN int
+SWIG_AsVal_short (PyObject * obj, short *val)
+{
+  long v;
+  int res = SWIG_AsVal_long (obj, &v);
+  if (SWIG_IsOK(res)) {
+    if ((v < SHRT_MIN || v > SHRT_MAX)) {
+      return SWIG_OverflowError;
+    } else {
+      if (val) *val = static_cast< short >(v);
+    }
+  }  
+  return res;
+}
+
+
+SWIGINTERNINLINE PyObject *
+SWIG_From_short  (short value)
+{    
+  return SWIG_From_long  (value);
+}
+
+
+SWIGINTERN int
+SWIG_AsVal_int (PyObject * obj, int *val)
+{
+  long v;
+  int res = SWIG_AsVal_long (obj, &v);
+  if (SWIG_IsOK(res)) {
+    if ((v < INT_MIN || v > INT_MAX)) {
+      return SWIG_OverflowError;
+    } else {
+      if (val) *val = static_cast< int >(v);
+    }
+  }  
+  return res;
+}
+
+
+SWIGINTERN int
+SWIG_AsVal_unsigned_SS_char (PyObject * obj, unsigned char *val)
+{
+  unsigned long v;
+  int res = SWIG_AsVal_unsigned_SS_long (obj, &v);
+  if (SWIG_IsOK(res)) {
+    if ((v > UCHAR_MAX)) {
+      return SWIG_OverflowError;
+    } else {
+      if (val) *val = static_cast< unsigned char >(v);
+    }
+  }  
+  return res;
+}
+
+
+SWIGINTERNINLINE PyObject *
+SWIG_From_unsigned_SS_char  (unsigned char value)
+{    
+  return SWIG_From_unsigned_SS_long  (value);
+}
+
+
+SWIGINTERN int
+SWIG_AsVal_unsigned_SS_short (PyObject * obj, unsigned short *val)
+{
+  unsigned long v;
+  int res = SWIG_AsVal_unsigned_SS_long (obj, &v);
+  if (SWIG_IsOK(res)) {
+    if ((v > USHRT_MAX)) {
+      return SWIG_OverflowError;
+    } else {
+      if (val) *val = static_cast< unsigned short >(v);
+    }
+  }  
+  return res;
+}
+
+
+SWIGINTERNINLINE PyObject *
+SWIG_From_unsigned_SS_short  (unsigned short value)
+{    
+  return SWIG_From_unsigned_SS_long  (value);
+}
+
+
+SWIGINTERN int
+SWIG_AsVal_unsigned_SS_int (PyObject * obj, unsigned int *val)
+{
+  unsigned long v;
+  int res = SWIG_AsVal_unsigned_SS_long (obj, &v);
+  if (SWIG_IsOK(res)) {
+    if ((v > UINT_MAX)) {
+      return SWIG_OverflowError;
+    } else {
+      if (val) *val = static_cast< unsigned int >(v);
+    }
+  }  
+  return res;
+}
+
+
+SWIGINTERNINLINE PyObject*
+  SWIG_From_unsigned_SS_int  (unsigned int value)
+{
+  return PyInt_FromSize_t((size_t) value);
+}
+
+
+
+#include <faiss/gpu/StandardGpuResources.h>
+#include <faiss/gpu/GpuIndicesOptions.h>
+#include <faiss/gpu/GpuClonerOptions.h>
+#include <faiss/gpu/GpuIndex.h>
+#include <faiss/gpu/GpuIndexFlat.h>
+#include <faiss/gpu/GpuIndexIVF.h>
+#include <faiss/gpu/GpuIndexIVFPQ.h>
+#include <faiss/gpu/GpuIndexIVFFlat.h>
+#include <faiss/gpu/GpuIndexIVFScalarQuantizer.h>
+#include <faiss/gpu/GpuIndexBinaryFlat.h>
+#include <faiss/gpu/GpuAutoTune.h>
+#include <faiss/gpu/GpuCloner.h>
+#include <faiss/gpu/GpuDistance.h>
+#include <faiss/gpu/GpuIcmEncoder.h>
+
+int get_num_gpus()
+{
+    return faiss::gpu::getNumDevices();
+}
+
+void gpu_profiler_start()
+{
+    return faiss::gpu::profilerStart();
+}
+
+void gpu_profiler_stop()
+{
+    return faiss::gpu::profilerStop();
+}
+
+void gpu_sync_all_devices()
+{
+    return faiss::gpu::synchronizeAllDevices();
+}
+
+
+
+namespace swig {
+  template <class Type>
+  struct noconst_traits {
+    typedef Type noconst_type;
+  };
+
+  template <class Type>
+  struct noconst_traits<const Type> {
+    typedef Type noconst_type;
+  };
+
+  /*
+    type categories
+  */
+  struct pointer_category { };
+  struct value_category { };
+
+  /*
+    General traits that provides type_name and type_info
+  */
+  template <class Type> struct traits { };
+
+  template <class Type>
+  inline const char* type_name() {
+    return traits<typename noconst_traits<Type >::noconst_type >::type_name();
+  }
+
+  template <class Type> struct traits_info {
+    static swig_type_info *type_query(std::string name) {
+      name += " *";
+      return SWIG_TypeQuery(name.c_str());
+    }
+    static swig_type_info *type_info() {
+      static swig_type_info *info = type_query(type_name<Type>());
+      return info;
+    }
+  };
+
+  /*
+    Partial specialization for pointers (traits_info)
+  */
+  template <class Type> struct traits_info<Type *> {
+    static swig_type_info *type_query(std::string name) {
+      name += " *";
+      return SWIG_TypeQuery(name.c_str());
+    }
+    static swig_type_info *type_info() {
+      static swig_type_info *info = type_query(type_name<Type>());
+      return info;
+    }
+  };
+
+  template <class Type>
+  inline swig_type_info *type_info() {
+    return traits_info<Type>::type_info();
+  }
+
+  /*
+    Partial specialization for pointers (traits)
+  */
+  template <class Type> struct traits <Type *> {
+    typedef pointer_category category;
+    static std::string make_ptr_name(const char* name) {
+      std::string ptrname = name;
+      ptrname += " *";
+      return ptrname;
+    }
+    static const char* type_name() {
+      static std::string name = make_ptr_name(swig::type_name<Type>());
+      return name.c_str();
+    }
+  };
+
+  template <class Type, class Category>
+  struct traits_as { };
+
+  template <class Type, class Category>
+  struct traits_check { };
+
+}
+
+
+namespace swig {  
+  /*
+    Traits that provides the from method
+  */
+  template <class Type> struct traits_from_ptr {
+    static PyObject *from(Type *val, int owner = 0) {
+      return SWIG_InternalNewPointerObj(val, type_info<Type>(), owner);
+    }
+  };
+
+  template <class Type> struct traits_from {
+    static PyObject *from(const Type& val) {
+      return traits_from_ptr<Type>::from(new Type(val), 1);
+    }
+  };
+
+  template <class Type> struct traits_from<Type *> {
+    static PyObject *from(Type* val) {
+      return traits_from_ptr<Type>::from(val, 0);
+    }
+  };
+
+  template <class Type> struct traits_from<const Type *> {
+    static PyObject *from(const Type* val) {
+      return traits_from_ptr<Type>::from(const_cast<Type*>(val), 0);
+    }
+  };
+
+
+  template <class Type>
+  inline PyObject *from(const Type& val) {
+    return traits_from<Type>::from(val);
+  }
+
+  template <class Type>
+  inline PyObject *from_ptr(Type* val, int owner) {
+    return traits_from_ptr<Type>::from(val, owner);
+  }
+
+  /*
+    Traits that provides the asval/as/check method
+  */
+  template <class Type>
+  struct traits_asptr {   
+    static int asptr(PyObject *obj, Type **val) {
+      int res = SWIG_ERROR;
+      swig_type_info *descriptor = type_info<Type>();
+      if (val) {
+        Type *p = 0;
+        int newmem = 0;
+        res = descriptor ? SWIG_ConvertPtrAndOwn(obj, (void **)&p, descriptor, 0, &newmem) : SWIG_ERROR;
+        if (SWIG_IsOK(res)) {
+          if (newmem & SWIG_CAST_NEW_MEMORY) {
+            res |= SWIG_NEWOBJMASK;
+          }
+          *val = p;
+        }
+      } else {
+        res = descriptor ? SWIG_ConvertPtr(obj, 0, descriptor, 0) : SWIG_ERROR;
+      }
+      return res;
+    }
+  }; 
+
+  template <class Type>
+  inline int asptr(PyObject *obj, Type **vptr) {
+    return traits_asptr<Type>::asptr(obj, vptr);
+  }
+
+  template <class Type> 
+  struct traits_asval {
+    static int asval(PyObject *obj, Type *val) {
+      if (val) {
+	Type *p = 0;
+	int res = traits_asptr<Type>::asptr(obj, &p);
+	if (!SWIG_IsOK(res)) return res;	
+	if (p) {
+	  typedef typename noconst_traits<Type>::noconst_type noconst_type;
+	  *(const_cast<noconst_type*>(val)) = *p;
+	  if (SWIG_IsNewObj(res)){
+	    delete p;
+	    res = SWIG_DelNewMask(res);
+	  }
+	  return res;
+	} else {
+	  return SWIG_ERROR;
+	}
+      } else {
+	return traits_asptr<Type>::asptr(obj, (Type **)(0));
+      }
+    }
+  };
+
+  template <class Type> struct traits_asval<Type*> {
+    static int asval(PyObject *obj, Type **val) {
+      if (val) {
+        typedef typename noconst_traits<Type>::noconst_type noconst_type;
+        noconst_type *p = 0;
+        int res = traits_asptr<noconst_type>::asptr(obj,  &p);
+        if (SWIG_IsOK(res)) {
+          *(const_cast<noconst_type**>(val)) = p;
+	}
+	return res;
+      } else {
+	return traits_asptr<Type>::asptr(obj, (Type **)(0));
+      }
+    }
+  };
+  
+  template <class Type>
+  inline int asval(PyObject *obj, Type *val) {
+    return traits_asval<Type>::asval(obj, val);
+  }
+
+  template <class Type> 
+  struct traits_as<Type, value_category> {
+    static Type as(PyObject *obj) {
+      Type v;
+      int res = asval(obj, &v);
+      if (!obj || !SWIG_IsOK(res)) {
+	if (!PyErr_Occurred()) {
+	  ::SWIG_Error(SWIG_TypeError,  swig::type_name<Type>());
+	}
+	throw std::invalid_argument("bad type");
+      }
+      return v;
+    }
+  };
+
+  template <class Type> 
+  struct traits_as<Type, pointer_category> {
+    static Type as(PyObject *obj) {
+      Type *v = 0;      
+      int res = (obj ? traits_asptr<Type>::asptr(obj, &v) : SWIG_ERROR);
+      if (SWIG_IsOK(res) && v) {
+	if (SWIG_IsNewObj(res)) {
+	  Type r(*v);
+	  delete v;
+	  return r;
+	} else {
+	  return *v;
+	}
+      } else {
+	if (!PyErr_Occurred()) {
+	  SWIG_Error(SWIG_TypeError,  swig::type_name<Type>());
+	}
+	throw std::invalid_argument("bad type");
+      }
+    }
+  };
+
+  template <class Type> 
+  struct traits_as<Type*, pointer_category> {
+    static Type* as(PyObject *obj) {
+      Type *v = 0;      
+      int res = (obj ? traits_asptr<Type>::asptr(obj, &v) : SWIG_ERROR);
+      if (SWIG_IsOK(res)) {
+	return v;
+      } else {
+	if (!PyErr_Occurred()) {
+	  SWIG_Error(SWIG_TypeError,  swig::type_name<Type>());
+	}
+	throw std::invalid_argument("bad type");
+      }
+    }
+  };
+    
+  template <class Type>
+  inline Type as(PyObject *obj) {
+    return traits_as<Type, typename traits<Type>::category>::as(obj);
+  }
+
+  template <class Type> 
+  struct traits_check<Type, value_category> {
+    static bool check(PyObject *obj) {
+      int res = obj ? asval(obj, (Type *)(0)) : SWIG_ERROR;
+      return SWIG_IsOK(res) ? true : false;
+    }
+  };
+
+  template <class Type> 
+  struct traits_check<Type, pointer_category> {
+    static bool check(PyObject *obj) {
+      int res = obj ? asptr(obj, (Type **)(0)) : SWIG_ERROR;
+      return SWIG_IsOK(res) ? true : false;
+    }
+  };
+
+  template <class Type>
+  inline bool check(PyObject *obj) {
+    return traits_check<Type, typename traits<Type>::category>::check(obj);
+  }
+}
+
+
+#include <functional>
+
+namespace std {
+  template <>
+  struct less <PyObject *>
+  {
+    bool
+    operator()(PyObject * v, PyObject *w) const
+    { 
+      bool res;
+      SWIG_PYTHON_THREAD_BEGIN_BLOCK;
+      res = PyObject_RichCompareBool(v, w, Py_LT) ? true : false;
+      /* This may fall into a case of inconsistent
+               eg. ObjA > ObjX > ObjB
+               but ObjA < ObjB
+      */
+      if( PyErr_Occurred() && PyErr_ExceptionMatches(PyExc_TypeError) )
+      {
+        /* Objects can't be compared, this mostly occurred in Python 3.0 */
+        /* Compare their ptr directly for a workaround */
+        res = (v < w);
+        PyErr_Clear();
+      }
+      SWIG_PYTHON_THREAD_END_BLOCK;
+      return res;
+    }
+  };
+
+  template <>
+  struct less <swig::SwigPtr_PyObject>
+  {
+    bool
+    operator()(const swig::SwigPtr_PyObject& v, const swig::SwigPtr_PyObject& w) const
+    {
+      return std::less<PyObject *>()(v, w);
+    }
+  };
+
+  template <>
+  struct less <swig::SwigVar_PyObject>
+  {
+    bool
+    operator()(const swig::SwigVar_PyObject& v, const swig::SwigVar_PyObject& w) const
+    {
+      return std::less<PyObject *>()(v, w);
+    }
+  };
+
+}
+
+namespace swig {
+  template <> struct traits<PyObject *> {
+    typedef value_category category;
+    static const char* type_name() { return "PyObject *"; }
+  };  
+
+  template <>  struct traits_asval<PyObject * > {   
+    typedef PyObject * value_type;
+    static int asval(PyObject *obj, value_type *val) {
+      if (val) *val = obj;
+      return SWIG_OK;
+    }
+  };
+
+  template <> 
+  struct traits_check<PyObject *, value_category> {
+    static bool check(PyObject *) {
+      return true;
+    }
+  };
+
+  template <>  struct traits_from<PyObject *> {
+    typedef PyObject * value_type;
+    static PyObject *from(const value_type& val) {
+      Py_XINCREF(val);
+      return val;
+    }
+  };
+  
+}
+
+namespace swig {
+  template <class Difference>
+  inline size_t
+  check_index(Difference i, size_t size, bool insert = false) {
+    if ( i < 0 ) {
+      if ((size_t) (-i) <= size)
+	return (size_t) (i + size);
+    } else if ( (size_t) i < size ) {
+      return (size_t) i;
+    } else if (insert && ((size_t) i == size)) {
+      return size;
+    }
+    throw std::out_of_range("index out of range");
+  }
+
+  template <class Difference>
+  void
+  slice_adjust(Difference i, Difference j, Py_ssize_t step, size_t size, Difference &ii, Difference &jj, bool insert = false) {
+    if (step == 0) {
+      throw std::invalid_argument("slice step cannot be zero");
+    } else if (step > 0) {
+      // Required range: 0 <= i < size, 0 <= j < size, i <= j
+      if (i < 0) {
+        ii = 0;
+      } else if (i < (Difference)size) {
+        ii = i;
+      } else if (insert && (i >= (Difference)size)) {
+        ii = (Difference)size;
+      }
+      if (j < 0) {
+        jj = 0;
+      } else {
+        jj = (j < (Difference)size) ? j : (Difference)size;
+      }
+      if (jj < ii)
+        jj = ii;
+    } else {
+      // Required range: -1 <= i < size-1, -1 <= j < size-1, i >= j
+      if (i < -1) {
+        ii = -1;
+      } else if (i < (Difference) size) {
+        ii = i;
+      } else if (i >= (Difference)(size-1)) {
+        ii = (Difference)(size-1);
+      }
+      if (j < -1) {
+        jj = -1;
+      } else {
+        jj = (j < (Difference)size ) ? j : (Difference)(size-1);
+      }
+      if (ii < jj)
+        ii = jj;
+    }
+  }
+
+  template <class Sequence, class Difference>
+  inline typename Sequence::iterator
+  getpos(Sequence* self, Difference i)  {
+    typename Sequence::iterator pos = self->begin();
+    std::advance(pos, check_index(i,self->size()));
+    return pos;
+  }
+
+  template <class Sequence, class Difference>
+  inline typename Sequence::const_iterator
+  cgetpos(const Sequence* self, Difference i)  {
+    typename Sequence::const_iterator pos = self->begin();
+    std::advance(pos, check_index(i,self->size()));
+    return pos;
+  }
+
+  template <class Sequence>
+  inline void
+  erase(Sequence* seq, const typename Sequence::iterator& position) {
+    seq->erase(position);
+  }
+
+  template <class Sequence>
+  struct traits_reserve {
+    static void reserve(Sequence & /*seq*/, typename Sequence::size_type /*n*/) {
+      // This should be specialized for types that support reserve
+    }
+  };
+
+  template <class Sequence, class Difference>
+  inline Sequence*
+  getslice(const Sequence* self, Difference i, Difference j, Py_ssize_t step) {
+    typename Sequence::size_type size = self->size();
+    Difference ii = 0;
+    Difference jj = 0;
+    swig::slice_adjust(i, j, step, size, ii, jj);
+
+    if (step > 0) {
+      typename Sequence::const_iterator sb = self->begin();
+      typename Sequence::const_iterator se = self->begin();
+      std::advance(sb,ii);
+      std::advance(se,jj);
+      if (step == 1) {
+        return new Sequence(sb, se);
+      } else {
+        Sequence *sequence = new Sequence();
+        swig::traits_reserve<Sequence>::reserve(*sequence, (jj - ii + step - 1) / step);
+        typename Sequence::const_iterator it = sb;
+        while (it!=se) {
+          sequence->push_back(*it);
+          for (Py_ssize_t c=0; c<step && it!=se; ++c)
+            it++;
+        }
+        return sequence;
+      } 
+    } else {
+      Sequence *sequence = new Sequence();
+      swig::traits_reserve<Sequence>::reserve(*sequence, (ii - jj - step - 1) / -step);
+      typename Sequence::const_reverse_iterator sb = self->rbegin();
+      typename Sequence::const_reverse_iterator se = self->rbegin();
+      std::advance(sb,size-ii-1);
+      std::advance(se,size-jj-1);
+      typename Sequence::const_reverse_iterator it = sb;
+      while (it!=se) {
+        sequence->push_back(*it);
+        for (Py_ssize_t c=0; c<-step && it!=se; ++c)
+          it++;
+      }
+      return sequence;
+    }
+  }
+
+  template <class Sequence, class Difference, class InputSeq>
+  inline void
+  setslice(Sequence* self, Difference i, Difference j, Py_ssize_t step, const InputSeq& is = InputSeq()) {
+    typename Sequence::size_type size = self->size();
+    Difference ii = 0;
+    Difference jj = 0;
+    swig::slice_adjust(i, j, step, size, ii, jj, true);
+    if (step > 0) {
+      if (step == 1) {
+        size_t ssize = jj - ii;
+        if (ssize <= is.size()) {
+          // expanding/staying the same size
+          swig::traits_reserve<Sequence>::reserve(*self, self->size() - ssize + is.size());
+          typename Sequence::iterator sb = self->begin();
+          typename InputSeq::const_iterator isit = is.begin();
+          std::advance(sb,ii);
+          std::advance(isit, jj - ii);
+          self->insert(std::copy(is.begin(), isit, sb), isit, is.end());
+        } else {
+          // shrinking
+          typename Sequence::iterator sb = self->begin();
+          typename Sequence::iterator se = self->begin();
+          std::advance(sb,ii);
+          std::advance(se,jj);
+          self->erase(sb,se);
+          sb = self->begin();
+          std::advance(sb,ii);
+          self->insert(sb, is.begin(), is.end());
+        }
+      } else {
+        size_t replacecount = (jj - ii + step - 1) / step;
+        if (is.size() != replacecount) {
+          char msg[1024];
+          sprintf(msg, "attempt to assign sequence of size %lu to extended slice of size %lu", (unsigned long)is.size(), (unsigned long)replacecount);
+          throw std::invalid_argument(msg);
+        }
+        typename Sequence::const_iterator isit = is.begin();
+        typename Sequence::iterator it = self->begin();
+        std::advance(it,ii);
+        for (size_t rc=0; rc<replacecount && it != self->end(); ++rc) {
+          *it++ = *isit++;
+          for (Py_ssize_t c=0; c<(step-1) && it != self->end(); ++c)
+            it++;
+        }
+      }
+    } else {
+      size_t replacecount = (ii - jj - step - 1) / -step;
+      if (is.size() != replacecount) {
+        char msg[1024];
+        sprintf(msg, "attempt to assign sequence of size %lu to extended slice of size %lu", (unsigned long)is.size(), (unsigned long)replacecount);
+        throw std::invalid_argument(msg);
+      }
+      typename Sequence::const_iterator isit = is.begin();
+      typename Sequence::reverse_iterator it = self->rbegin();
+      std::advance(it,size-ii-1);
+      for (size_t rc=0; rc<replacecount && it != self->rend(); ++rc) {
+        *it++ = *isit++;
+        for (Py_ssize_t c=0; c<(-step-1) && it != self->rend(); ++c)
+          it++;
+      }
+    }
+  }
+
+  template <class Sequence, class Difference>
+  inline void
+  delslice(Sequence* self, Difference i, Difference j, Py_ssize_t step) {
+    typename Sequence::size_type size = self->size();
+    Difference ii = 0;
+    Difference jj = 0;
+    swig::slice_adjust(i, j, step, size, ii, jj, true);
+    if (step > 0) {
+      typename Sequence::iterator sb = self->begin();
+      std::advance(sb,ii);
+      if (step == 1) {
+        typename Sequence::iterator se = self->begin();
+        std::advance(se,jj);
+        self->erase(sb,se);
+      } else {
+        typename Sequence::iterator it = sb;
+        size_t delcount = (jj - ii + step - 1) / step;
+        while (delcount) {
+          it = self->erase(it);
+          for (Py_ssize_t c=0; c<(step-1) && it != self->end(); ++c)
+            it++;
+          delcount--;
+        }
+      }
+    } else {
+      typename Sequence::reverse_iterator sb = self->rbegin();
+      std::advance(sb,size-ii-1);
+      typename Sequence::reverse_iterator it = sb;
+      size_t delcount = (ii - jj - step - 1) / -step;
+      while (delcount) {
+        it = typename Sequence::reverse_iterator(self->erase((++it).base()));
+        for (Py_ssize_t c=0; c<(-step-1) && it != self->rend(); ++c)
+          it++;
+        delcount--;
+      }
+    }
+  }
+}
+
+
+#if defined(__SUNPRO_CC) && defined(_RWSTD_VER)
+#  if !defined(SWIG_NO_STD_NOITERATOR_TRAITS_STL)
+#    define SWIG_STD_NOITERATOR_TRAITS_STL
+#  endif
+#endif
+
+#if !defined(SWIG_STD_NOITERATOR_TRAITS_STL)
+#include <iterator>
+#else
+namespace std {
+  template <class Iterator>
+  struct iterator_traits {
+    typedef ptrdiff_t difference_type;
+    typedef typename Iterator::value_type value_type;
+  };
+
+  template <class Iterator, class Category,class T, class Reference, class Pointer, class Distance>
+  struct iterator_traits<__reverse_bi_iterator<Iterator,Category,T,Reference,Pointer,Distance> > {
+    typedef Distance difference_type;
+    typedef T value_type;
+  };
+
+  template <class T>
+  struct iterator_traits<T*> {
+    typedef T value_type;
+    typedef ptrdiff_t difference_type;
+  };
+
+  template<typename _InputIterator>
+  inline typename iterator_traits<_InputIterator>::difference_type
+  distance(_InputIterator __first, _InputIterator __last)
+  {
+    typename iterator_traits<_InputIterator>::difference_type __n = 0;
+    while (__first != __last) {
+      ++__first; ++__n;
+    }
+    return __n;
+  }
+}
+#endif
+
+
+namespace swig {
+  template<typename OutIterator>
+  class SwigPyIterator_T :  public SwigPyIterator
+  {
+  public:
+    typedef OutIterator out_iterator;
+    typedef typename std::iterator_traits<out_iterator>::value_type value_type;    
+    typedef SwigPyIterator_T<out_iterator> self_type;
+
+    SwigPyIterator_T(out_iterator curr, PyObject *seq)
+      : SwigPyIterator(seq), current(curr)
+    {
+    }
+
+    const out_iterator& get_current() const
+    {
+      return current;
+    }
+
+    
+    bool equal (const SwigPyIterator &iter) const
+    {
+      const self_type *iters = dynamic_cast<const self_type *>(&iter);
+      if (iters) {
+	return (current == iters->get_current());
+      } else {
+	throw std::invalid_argument("bad iterator type");
+      }
+    }
+    
+    ptrdiff_t distance(const SwigPyIterator &iter) const
+    {
+      const self_type *iters = dynamic_cast<const self_type *>(&iter);
+      if (iters) {
+	return std::distance(current, iters->get_current());
+      } else {
+	throw std::invalid_argument("bad iterator type");
+      }
+    }    
+    
+  protected:
+    out_iterator current;
+  };
+  
+  template <class ValueType>
+  struct from_oper 
+  {
+    typedef const ValueType& argument_type;
+    typedef PyObject *result_type;
+    result_type operator()(argument_type v) const
+    {
+      return swig::from(v);
+    }
+  };
+
+  template<typename OutIterator, 
+	   typename ValueType = typename std::iterator_traits<OutIterator>::value_type,
+	   typename FromOper = from_oper<ValueType> >
+  class SwigPyForwardIteratorOpen_T :  public SwigPyIterator_T<OutIterator>
+  {
+  public:
+    FromOper from;
+    typedef OutIterator out_iterator;
+    typedef ValueType value_type;
+    typedef SwigPyIterator_T<out_iterator>  base;
+    typedef SwigPyForwardIteratorOpen_T<OutIterator, ValueType, FromOper> self_type;
+    
+    SwigPyForwardIteratorOpen_T(out_iterator curr, PyObject *seq)
+      : SwigPyIterator_T<OutIterator>(curr, seq)
+    {
+    }
+    
+    PyObject *value() const {
+      return from(static_cast<const value_type&>(*(base::current)));
+    }
+    
+    SwigPyIterator *copy() const
+    {
+      return new self_type(*this);
+    }
+
+    SwigPyIterator *incr(size_t n = 1)
+    {
+      while (n--) {
+	++base::current;
+      }
+      return this;
+    }
+
+  };
+
+  template<typename OutIterator, 
+	   typename ValueType = typename std::iterator_traits<OutIterator>::value_type,
+	   typename FromOper = from_oper<ValueType> >
+  class SwigPyIteratorOpen_T :  public SwigPyForwardIteratorOpen_T<OutIterator, ValueType, FromOper>
+  {
+  public:
+    FromOper from;
+    typedef OutIterator out_iterator;
+    typedef ValueType value_type;
+    typedef SwigPyIterator_T<out_iterator>  base;
+    typedef SwigPyIteratorOpen_T<OutIterator, ValueType, FromOper> self_type;
+    
+    SwigPyIteratorOpen_T(out_iterator curr, PyObject *seq)
+      : SwigPyForwardIteratorOpen_T<OutIterator>(curr, seq)
+    {
+    }
+
+    SwigPyIterator *decr(size_t n = 1)
+    {
+      while (n--) {
+	--base::current;
+      }
+      return this;
+    }
+  };
+
+  template<typename OutIterator, 
+	   typename ValueType = typename std::iterator_traits<OutIterator>::value_type,
+	   typename FromOper = from_oper<ValueType> >
+  class SwigPyForwardIteratorClosed_T :  public SwigPyIterator_T<OutIterator>
+  {
+  public:
+    FromOper from;
+    typedef OutIterator out_iterator;
+    typedef ValueType value_type;
+    typedef SwigPyIterator_T<out_iterator>  base;    
+    typedef SwigPyForwardIteratorClosed_T<OutIterator, ValueType, FromOper> self_type;
+    
+    SwigPyForwardIteratorClosed_T(out_iterator curr, out_iterator first, out_iterator last, PyObject *seq)
+      : SwigPyIterator_T<OutIterator>(curr, seq), begin(first), end(last)
+    {
+    }
+    
+    PyObject *value() const {
+      if (base::current == end) {
+	throw stop_iteration();
+      } else {
+	return from(static_cast<const value_type&>(*(base::current)));
+      }
+    }
+    
+    SwigPyIterator *copy() const
+    {
+      return new self_type(*this);
+    }
+
+    SwigPyIterator *incr(size_t n = 1)
+    {
+      while (n--) {
+	if (base::current == end) {
+	  throw stop_iteration();
+	} else {
+	  ++base::current;
+	}
+      }
+      return this;
+    }
+
+  protected:
+    out_iterator begin;
+    out_iterator end;
+  };
+
+  template<typename OutIterator, 
+	   typename ValueType = typename std::iterator_traits<OutIterator>::value_type,
+	   typename FromOper = from_oper<ValueType> >
+  class SwigPyIteratorClosed_T :  public SwigPyForwardIteratorClosed_T<OutIterator,ValueType,FromOper>
+  {
+  public:
+    FromOper from;
+    typedef OutIterator out_iterator;
+    typedef ValueType value_type;
+    typedef SwigPyIterator_T<out_iterator>  base;
+    typedef SwigPyForwardIteratorClosed_T<OutIterator, ValueType, FromOper> base0;
+    typedef SwigPyIteratorClosed_T<OutIterator, ValueType, FromOper> self_type;
+    
+    SwigPyIteratorClosed_T(out_iterator curr, out_iterator first, out_iterator last, PyObject *seq)
+      : SwigPyForwardIteratorClosed_T<OutIterator,ValueType,FromOper>(curr, first, last, seq)
+    {
+    }
+
+    SwigPyIterator *decr(size_t n = 1)
+    {
+      while (n--) {
+	if (base::current == base0::begin) {
+	  throw stop_iteration();
+	} else {
+	  --base::current;
+	}
+      }
+      return this;
+    }
+  };
+
+
+  template<typename OutIter>
+  inline SwigPyIterator*
+  make_output_forward_iterator(const OutIter& current, const OutIter& begin,const OutIter& end, PyObject *seq = 0)
+  {
+    return new SwigPyForwardIteratorClosed_T<OutIter>(current, begin, end, seq);
+  }
+
+  template<typename OutIter>
+  inline SwigPyIterator*
+  make_output_iterator(const OutIter& current, const OutIter& begin,const OutIter& end, PyObject *seq = 0)
+  {
+    return new SwigPyIteratorClosed_T<OutIter>(current, begin, end, seq);
+  }
+
+  template<typename OutIter>
+  inline SwigPyIterator*
+  make_output_forward_iterator(const OutIter& current, PyObject *seq = 0)
+  {
+    return new SwigPyForwardIteratorOpen_T<OutIter>(current, seq);
+  }
+
+  template<typename OutIter>
+  inline SwigPyIterator*
+  make_output_iterator(const OutIter& current, PyObject *seq = 0)
+  {
+    return new SwigPyIteratorOpen_T<OutIter>(current, seq);
+  }
+
+}
+
+
+namespace swig
+{
+  template <class T>
+  struct SwigPySequence_Ref
+  {
+    SwigPySequence_Ref(PyObject* seq, Py_ssize_t index)
+      : _seq(seq), _index(index)
+    {
+    }
+    
+    operator T () const
+    {
+      swig::SwigVar_PyObject item = PySequence_GetItem(_seq, _index);
+      try {
+	return swig::as<T>(item);
+      } catch (const std::invalid_argument& e) {
+	char msg[1024];
+	sprintf(msg, "in sequence element %d ", (int)_index);
+	if (!PyErr_Occurred()) {
+	  ::SWIG_Error(SWIG_TypeError,  swig::type_name<T>());
+	}
+	SWIG_Python_AddErrorMsg(msg);
+	SWIG_Python_AddErrorMsg(e.what());
+	throw;
+      }
+    }
+
+    SwigPySequence_Ref& operator=(const T& v)
+    {
+      PySequence_SetItem(_seq, _index, swig::from<T>(v));
+      return *this;
+    }
+
+  private:
+    PyObject* _seq;
+    Py_ssize_t _index;
+  };
+
+  template <class T>
+  struct SwigPySequence_ArrowProxy
+  {
+    SwigPySequence_ArrowProxy(const T& x): m_value(x) {}
+    const T* operator->() const { return &m_value; }
+    operator const T*() const { return &m_value; }
+    T m_value;
+  };
+
+  template <class T, class Reference >
+  struct SwigPySequence_InputIterator
+  {
+    typedef SwigPySequence_InputIterator<T, Reference > self;
+
+    typedef std::random_access_iterator_tag iterator_category;
+    typedef Reference reference;
+    typedef T value_type;
+    typedef T* pointer;
+    typedef Py_ssize_t difference_type;
+
+    SwigPySequence_InputIterator()
+    {
+    }
+
+    SwigPySequence_InputIterator(PyObject* seq, Py_ssize_t index)
+      : _seq(seq), _index(index)
+    {
+    }
+
+    reference operator*() const
+    {
+      return reference(_seq, _index);
+    }
+
+    SwigPySequence_ArrowProxy<T>
+    operator->() const {
+      return SwigPySequence_ArrowProxy<T>(operator*());
+    }
+
+    bool operator==(const self& ri) const
+    {
+      return (_index == ri._index) && (_seq == ri._seq);
+    }
+
+    bool operator!=(const self& ri) const
+    {
+      return !(operator==(ri));
+    }
+
+    self& operator ++ ()
+    {
+      ++_index;
+      return *this;
+    }
+
+    self& operator -- ()
+    {
+      --_index;
+      return *this;
+    }
+
+    self& operator += (difference_type n)
+    {
+      _index += n;
+      return *this;
+    }
+
+    self operator +(difference_type n) const
+    {
+      return self(_seq, _index + n);
+    }
+
+    self& operator -= (difference_type n)
+    {
+      _index -= n;
+      return *this;
+    }
+
+    self operator -(difference_type n) const
+    {
+      return self(_seq, _index - n);
+    }
+
+    difference_type operator - (const self& ri) const
+    {
+      return _index - ri._index;
+    }
+
+    bool operator < (const self& ri) const
+    {
+      return _index < ri._index;
+    }
+
+    reference
+    operator[](difference_type n) const
+    {
+      return reference(_seq, _index + n);
+    }
+
+  private:
+    PyObject* _seq;
+    difference_type _index;
+  };
+
+  // STL container wrapper around a Python sequence
+  template <class T>
+  struct SwigPySequence_Cont
+  {
+    typedef SwigPySequence_Ref<T> reference;
+    typedef const SwigPySequence_Ref<T> const_reference;
+    typedef T value_type;
+    typedef T* pointer;
+    typedef Py_ssize_t difference_type;
+    typedef size_t size_type;
+    typedef const pointer const_pointer;
+    typedef SwigPySequence_InputIterator<T, reference> iterator;
+    typedef SwigPySequence_InputIterator<T, const_reference> const_iterator;
+
+    SwigPySequence_Cont(PyObject* seq) : _seq(0)
+    {
+      if (!PySequence_Check(seq)) {
+	throw std::invalid_argument("a sequence is expected");
+      }
+      _seq = seq;
+      Py_INCREF(_seq);
+    }
+
+    ~SwigPySequence_Cont()
+    {
+      Py_XDECREF(_seq);
+    }
+
+    size_type size() const
+    {
+      return static_cast<size_type>(PySequence_Size(_seq));
+    }
+
+    bool empty() const
+    {
+      return size() == 0;
+    }
+
+    iterator begin()
+    {
+      return iterator(_seq, 0);
+    }
+
+    const_iterator begin() const
+    {
+      return const_iterator(_seq, 0);
+    }
+
+    iterator end()
+    {
+      return iterator(_seq, size());
+    }
+
+    const_iterator end() const
+    {
+      return const_iterator(_seq, size());
+    }
+
+    reference operator[](difference_type n)
+    {
+      return reference(_seq, n);
+    }
+
+    const_reference operator[](difference_type n)  const
+    {
+      return const_reference(_seq, n);
+    }
+
+    bool check() const
+    {
+      Py_ssize_t s = size();
+      for (Py_ssize_t i = 0; i < s; ++i) {
+	swig::SwigVar_PyObject item = PySequence_GetItem(_seq, i);
+	if (!swig::check<value_type>(item))
+	  return false;
+      }
+      return true;
+    }
+
+  private:
+    PyObject* _seq;
+  };
+
+}
+
+
+SWIGINTERN swig_type_info*
+SWIG_pchar_descriptor(void)
+{
+  static int init = 0;
+  static swig_type_info* info = 0;
+  if (!init) {
+    info = SWIG_TypeQuery("_p_char");
+    init = 1;
+  }
+  return info;
+}
+
+
+SWIGINTERNINLINE PyObject *
+SWIG_FromCharPtrAndSize(const char* carray, size_t size)
+{
+  if (carray) {
+    if (size > INT_MAX) {
+      swig_type_info* pchar_descriptor = SWIG_pchar_descriptor();
+      return pchar_descriptor ? 
+	SWIG_InternalNewPointerObj(const_cast< char * >(carray), pchar_descriptor, 0) : SWIG_Py_Void();
+    } else {
+#if PY_VERSION_HEX >= 0x03000000
+#if defined(SWIG_PYTHON_STRICT_BYTE_CHAR)
+      return PyBytes_FromStringAndSize(carray, static_cast< Py_ssize_t >(size));
+#else
+      return PyUnicode_DecodeUTF8(carray, static_cast< Py_ssize_t >(size), "surrogateescape");
+#endif
+#else
+      return PyString_FromStringAndSize(carray, static_cast< Py_ssize_t >(size));
+#endif
+    }
+  } else {
+    return SWIG_Py_Void();
+  }
+}
+
+
+SWIGINTERNINLINE PyObject *
+SWIG_From_std_string  (const std::string& s)
+{
+  return SWIG_FromCharPtrAndSize(s.data(), s.size());
+}
+
+
+struct SWIG_null_deleter {
+  void operator() (void const *) const {
+  }
+};
+#define SWIG_NO_NULL_DELETER_0 , SWIG_null_deleter()
+#define SWIG_NO_NULL_DELETER_1
+#define SWIG_NO_NULL_DELETER_SWIG_POINTER_NEW
+#define SWIG_NO_NULL_DELETER_SWIG_POINTER_OWN
+
+
+#define SWIG_NO_NULL_DELETER_SWIG_BUILTIN_INIT
+
+
+SWIGINTERN int
+SWIG_AsVal_bool (PyObject *obj, bool *val)
+{
+  int r;
+  if (!PyBool_Check(obj))
+    return SWIG_ERROR;
+  r = PyObject_IsTrue(obj);
+  if (r == -1)
+    return SWIG_ERROR;
+  if (val) *val = r ? true : false;
+  return SWIG_OK;
+}
+
+
+namespace swig {
+  template <> struct traits< int > {
+    typedef value_category category;
+    static const char* type_name() { return"int"; }
+  };
+  template <>  struct traits_asval< int > {
+    typedef int value_type;
+    static int asval(PyObject *obj, value_type *val) {
+      return SWIG_AsVal_int (obj, val);
+    }
+  };
+  template <>  struct traits_from< int > {
+    typedef int value_type;
+    static PyObject *from(const value_type& val) {
+      return SWIG_From_int  (val);
+    }
+  };
+}
+
+
+SWIGINTERN int
+SWIG_AsCharPtrAndSize(PyObject *obj, char** cptr, size_t* psize, int *alloc)
+{
+#if PY_VERSION_HEX>=0x03000000
+#if defined(SWIG_PYTHON_STRICT_BYTE_CHAR)
+  if (PyBytes_Check(obj))
+#else
+  if (PyUnicode_Check(obj))
+#endif
+#else  
+  if (PyString_Check(obj))
+#endif
+  {
+    char *cstr; Py_ssize_t len;
+    int ret = SWIG_OK;
+#if PY_VERSION_HEX>=0x03000000
+#if !defined(SWIG_PYTHON_STRICT_BYTE_CHAR)
+    if (!alloc && cptr) {
+        /* We can't allow converting without allocation, since the internal
+           representation of string in Python 3 is UCS-2/UCS-4 but we require
+           a UTF-8 representation.
+           TODO(bhy) More detailed explanation */
+        return SWIG_RuntimeError;
+    }
+    obj = PyUnicode_AsUTF8String(obj);
+    if (!obj)
+      return SWIG_TypeError;
+    if (alloc)
+      *alloc = SWIG_NEWOBJ;
+#endif
+    if (PyBytes_AsStringAndSize(obj, &cstr, &len) == -1)
+      return SWIG_TypeError;
+#else
+    if (PyString_AsStringAndSize(obj, &cstr, &len) == -1)
+      return SWIG_TypeError;
+#endif
+    if (cptr) {
+      if (alloc) {
+	if (*alloc == SWIG_NEWOBJ) {
+	  *cptr = reinterpret_cast< char* >(memcpy(new char[len + 1], cstr, sizeof(char)*(len + 1)));
+	  *alloc = SWIG_NEWOBJ;
+	} else {
+	  *cptr = cstr;
+	  *alloc = SWIG_OLDOBJ;
+	}
+      } else {
+#if PY_VERSION_HEX>=0x03000000
+#if defined(SWIG_PYTHON_STRICT_BYTE_CHAR)
+	*cptr = PyBytes_AsString(obj);
+#else
+	assert(0); /* Should never reach here with Unicode strings in Python 3 */
+#endif
+#else
+	*cptr = SWIG_Python_str_AsChar(obj);
+        if (!*cptr)
+          ret = SWIG_TypeError;
+#endif
+      }
+    }
+    if (psize) *psize = len + 1;
+#if PY_VERSION_HEX>=0x03000000 && !defined(SWIG_PYTHON_STRICT_BYTE_CHAR)
+    Py_XDECREF(obj);
+#endif
+    return ret;
+  } else {
+#if defined(SWIG_PYTHON_2_UNICODE)
+#if defined(SWIG_PYTHON_STRICT_BYTE_CHAR)
+#error "Cannot use both SWIG_PYTHON_2_UNICODE and SWIG_PYTHON_STRICT_BYTE_CHAR at once"
+#endif
+#if PY_VERSION_HEX<0x03000000
+    if (PyUnicode_Check(obj)) {
+      char *cstr; Py_ssize_t len;
+      if (!alloc && cptr) {
+        return SWIG_RuntimeError;
+      }
+      obj = PyUnicode_AsUTF8String(obj);
+      if (!obj)
+        return SWIG_TypeError;
+      if (PyString_AsStringAndSize(obj, &cstr, &len) != -1) {
+        if (cptr) {
+          if (alloc) *alloc = SWIG_NEWOBJ;
+          *cptr = reinterpret_cast< char* >(memcpy(new char[len + 1], cstr, sizeof(char)*(len + 1)));
+        }
+        if (psize) *psize = len + 1;
+
+        Py_XDECREF(obj);
+        return SWIG_OK;
+      } else {
+        Py_XDECREF(obj);
+      }
+    }
+#endif
+#endif
+
+    swig_type_info* pchar_descriptor = SWIG_pchar_descriptor();
+    if (pchar_descriptor) {
+      void* vptr = 0;
+      if (SWIG_ConvertPtr(obj, &vptr, pchar_descriptor, 0) == SWIG_OK) {
+	if (cptr) *cptr = (char *) vptr;
+	if (psize) *psize = vptr ? (strlen((char *)vptr) + 1) : 0;
+	if (alloc) *alloc = SWIG_OLDOBJ;
+	return SWIG_OK;
+      }
+    }
+  }
+  return SWIG_TypeError;
+}
+
+
+SWIGINTERN int
+SWIG_AsPtr_std_string (PyObject * obj, std::string **val) 
+{
+  char* buf = 0 ; size_t size = 0; int alloc = SWIG_OLDOBJ;
+  if (SWIG_IsOK((SWIG_AsCharPtrAndSize(obj, &buf, &size, &alloc)))) {
+    if (buf) {
+      if (val) *val = new std::string(buf, size - 1);
+      if (alloc == SWIG_NEWOBJ) delete[] buf;
+      return SWIG_NEWOBJ;
+    } else {
+      if (val) *val = 0;
+      return SWIG_OLDOBJ;
+    }
+  } else {
+    static int init = 0;
+    static swig_type_info* descriptor = 0;
+    if (!init) {
+      descriptor = SWIG_TypeQuery("std::string" " *");
+      init = 1;
+    }
+    if (descriptor) {
+      std::string *vptr;
+      int res = SWIG_ConvertPtr(obj, (void**)&vptr, descriptor, 0);
+      if (SWIG_IsOK(res) && val) *val = vptr;
+      return res;
+    }
+  }
+  return SWIG_ERROR;
+}
+
+
+SWIGINTERN int
+SWIG_AsVal_std_string (PyObject * obj, std::string *val)
+{
+  std::string* v = (std::string *) 0;
+  int res = SWIG_AsPtr_std_string (obj, &v);
+  if (!SWIG_IsOK(res)) return res;
+  if (v) {
+    if (val) *val = *v;
+    if (SWIG_IsNewObj(res)) {
+      delete v;
+      res = SWIG_DelNewMask(res);
+    }
+    return res;
+  }
+  return SWIG_ERROR;
+}
+
+
+namespace swig {
+  template <> struct traits< std::string > {
+    typedef value_category category;
+    static const char* type_name() { return"std::string"; }
+  };
+  template <>  struct traits_asval< std::string > {
+    typedef std::string value_type;
+    static int asval(PyObject *obj, value_type *val) {
+      return SWIG_AsVal_std_string (obj, val);
+    }
+  };
+  template <>  struct traits_from< std::string > {
+    typedef std::string value_type;
+    static PyObject *from(const value_type& val) {
+      return SWIG_From_std_string  (val);
+    }
+  };
+}
+
+
+namespace swig {
+  template <> struct traits< unsigned long > {
+    typedef value_category category;
+    static const char* type_name() { return"unsigned long"; }
+  };
+  template <>  struct traits_asval< unsigned long > {
+    typedef unsigned long value_type;
+    static int asval(PyObject *obj, value_type *val) {
+      return SWIG_AsVal_unsigned_SS_long (obj, val);
+    }
+  };
+  template <>  struct traits_from< unsigned long > {
+    typedef unsigned long value_type;
+    static PyObject *from(const value_type& val) {
+      return SWIG_From_unsigned_SS_long  (val);
+    }
+  };
+}
+
+
+  namespace swig {
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+    template <class T, class U >
+    struct traits_asptr<std::pair<T,U> >  {
+      typedef std::pair<T,U> value_type;
+
+      static int get_pair(PyObject* first, PyObject* second,
+			  std::pair<T,U> **val) 
+      {
+	if (val) {
+	  value_type *vp = (new std::pair<T,U>());
+	  T *pfirst = &(vp->first);
+	  int res1 = swig::asval((PyObject*)first, pfirst);
+	  if (!SWIG_IsOK(res1)) {
+	    delete vp;
+	    return res1;
+	  }
+	  U *psecond = &(vp->second);
+	  int res2 = swig::asval((PyObject*)second, psecond);
+	  if (!SWIG_IsOK(res2)) {
+	    delete vp;
+	    return res2;
+	  }
+	  *val = vp;
+	  return SWIG_AddNewMask(res1 > res2 ? res1 : res2);
+	} else {
+	  T *pfirst = 0;
+	  int res1 = swig::asval((PyObject*)first, pfirst);
+	  if (!SWIG_IsOK(res1)) return res1;
+	  U *psecond = 0;
+	  int res2 = swig::asval((PyObject*)second, psecond);
+	  if (!SWIG_IsOK(res2)) return res2;
+	  return res1 > res2 ? res1 : res2;
+	}
+      }
+
+      static int asptr(PyObject *obj, std::pair<T,U> **val) {
+	int res = SWIG_ERROR;
+	if (PyTuple_Check(obj)) {
+	  if (PyTuple_GET_SIZE(obj) == 2) {
+	    res = get_pair(PyTuple_GET_ITEM(obj,0),PyTuple_GET_ITEM(obj,1), val);
+	  }
+	} else if (PySequence_Check(obj)) {
+	  if (PySequence_Size(obj) == 2) {
+	    swig::SwigVar_PyObject first = PySequence_GetItem(obj,0);
+	    swig::SwigVar_PyObject second = PySequence_GetItem(obj,1);
+	    res = get_pair(first, second, val);
+	  }
+	} else {
+	  value_type *p = 0;
+	  swig_type_info *descriptor = swig::type_info<value_type>();
+	  res = descriptor ? SWIG_ConvertPtr(obj, (void **)&p, descriptor, 0) : SWIG_ERROR;
+	  if (SWIG_IsOK(res) && val)  *val = p;
+	}
+	return res;
+      }
+    };
+
+
+    template <class T, class U >
+    struct traits_from<std::pair<T,U> >   {
+      static PyObject *from(const std::pair<T,U>& val) {
+	PyObject* obj = PyTuple_New(2);
+	PyTuple_SetItem(obj,0,swig::from(val.first));
+	PyTuple_SetItem(obj,1,swig::from(val.second));
+	return obj;
+      }
+    };
+  }
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+      namespace swig {
+	template <>  struct traits<std::pair< int, unsigned long > > {
+	  typedef pointer_category category;
+	  static const char* type_name() {
+	    return "std::pair<" "int" "," "unsigned long" " >";
+	  }
+	};
+      }
+    
+
+      namespace swig {
+	template <>  struct traits<std::pair< std::string, std::pair< int,uint64_t > > > {
+	  typedef pointer_category category;
+	  static const char* type_name() {
+	    return "std::pair<" "std::string" "," "std::pair< int,uint64_t >" " >";
+	  }
+	};
+      }
+    
+
+namespace swig {
+  template <class SwigPySeq, class Seq>
+  inline void
+  assign(const SwigPySeq& swigpyseq, Seq* seq) {
+    // seq->assign(swigpyseq.begin(), swigpyseq.end()); // not used as not always implemented
+    typedef typename SwigPySeq::value_type value_type;
+    typename SwigPySeq::const_iterator it = swigpyseq.begin();
+    for (;it != swigpyseq.end(); ++it) {
+      seq->insert(seq->end(),(value_type)(*it));
+    }
+  }
+
+  template <class Seq, class T = typename Seq::value_type >
+  struct traits_asptr_stdseq {
+    typedef Seq sequence;
+    typedef T value_type;
+
+    static int asptr(PyObject *obj, sequence **seq) {
+      if (obj == Py_None || SWIG_Python_GetSwigThis(obj)) {
+	sequence *p;
+	swig_type_info *descriptor = swig::type_info<sequence>();
+	if (descriptor && SWIG_IsOK(::SWIG_ConvertPtr(obj, (void **)&p, descriptor, 0))) {
+	  if (seq) *seq = p;
+	  return SWIG_OLDOBJ;
+	}
+      } else if (PySequence_Check(obj)) {
+	try {
+	  SwigPySequence_Cont<value_type> swigpyseq(obj);
+	  if (seq) {
+	    sequence *pseq = new sequence();
+	    assign(swigpyseq, pseq);
+	    *seq = pseq;
+	    return SWIG_NEWOBJ;
+	  } else {
+	    return swigpyseq.check() ? SWIG_OK : SWIG_ERROR;
+	  }
+	} catch (std::exception& e) {
+	  if (seq) {
+	    if (!PyErr_Occurred()) {
+	      PyErr_SetString(PyExc_TypeError, e.what());
+	    }
+	  }
+	  return SWIG_ERROR;
+	}
+      }
+      return SWIG_ERROR;
+    }
+  };
+
+  template <class Seq, class T = typename Seq::value_type >
+  struct traits_from_stdseq {
+    typedef Seq sequence;
+    typedef T value_type;
+    typedef typename Seq::size_type size_type;
+    typedef typename sequence::const_iterator const_iterator;
+
+    static PyObject *from(const sequence& seq) {
+#ifdef SWIG_PYTHON_EXTRA_NATIVE_CONTAINERS
+      swig_type_info *desc = swig::type_info<sequence>();
+      if (desc && desc->clientdata) {
+	return SWIG_InternalNewPointerObj(new sequence(seq), desc, SWIG_POINTER_OWN);
+      }
+#endif
+      size_type size = seq.size();
+      if (size <= (size_type)INT_MAX) {
+	PyObject *obj = PyTuple_New((Py_ssize_t)size);
+	Py_ssize_t i = 0;
+	for (const_iterator it = seq.begin(); it != seq.end(); ++it, ++i) {
+	  PyTuple_SetItem(obj,i,swig::from<value_type>(*it));
+	}
+	return obj;
+      } else {
+	PyErr_SetString(PyExc_OverflowError,"sequence size not valid in python");
+	return NULL;
+      }
+    }
+  };
+}
+
+
+  namespace swig {
+    template <class ValueType>
+    struct from_key_oper 
+    {
+      typedef const ValueType& argument_type;
+      typedef  PyObject *result_type;
+      result_type operator()(argument_type v) const
+      {
+	return swig::from(v.first);
+      }
+    };
+
+    template <class ValueType>
+    struct from_value_oper 
+    {
+      typedef const ValueType& argument_type;
+      typedef  PyObject *result_type;
+      result_type operator()(argument_type v) const
+      {
+	return swig::from(v.second);
+      }
+    };
+
+    template<class OutIterator, class FromOper, class ValueType = typename OutIterator::value_type>
+    struct SwigPyMapIterator_T : SwigPyIteratorClosed_T<OutIterator, ValueType, FromOper>
+    {
+      SwigPyMapIterator_T(OutIterator curr, OutIterator first, OutIterator last, PyObject *seq)
+	: SwigPyIteratorClosed_T<OutIterator,ValueType,FromOper>(curr, first, last, seq)
+      {
+      }
+    };
+
+
+    template<class OutIterator,
+	     class FromOper = from_key_oper<typename OutIterator::value_type> >
+    struct SwigPyMapKeyIterator_T : SwigPyMapIterator_T<OutIterator, FromOper>
+    {
+      SwigPyMapKeyIterator_T(OutIterator curr, OutIterator first, OutIterator last, PyObject *seq)
+	: SwigPyMapIterator_T<OutIterator, FromOper>(curr, first, last, seq)
+      {
+      }
+    };
+
+    template<typename OutIter>
+    inline SwigPyIterator*
+    make_output_key_iterator(const OutIter& current, const OutIter& begin, const OutIter& end, PyObject *seq = 0)
+    {
+      return new SwigPyMapKeyIterator_T<OutIter>(current, begin, end, seq);
+    }
+
+    template<class OutIterator,
+	     class FromOper = from_value_oper<typename OutIterator::value_type> >
+    struct SwigPyMapValueIterator_T : SwigPyMapIterator_T<OutIterator, FromOper>
+    {
+      SwigPyMapValueIterator_T(OutIterator curr, OutIterator first, OutIterator last, PyObject *seq)
+	: SwigPyMapIterator_T<OutIterator, FromOper>(curr, first, last, seq)
+      {
+      }
+    };
+    
+
+    template<typename OutIter>
+    inline SwigPyIterator*
+    make_output_value_iterator(const OutIter& current, const OutIter& begin, const OutIter& end, PyObject *seq = 0)
+    {
+      return new SwigPyMapValueIterator_T<OutIter>(current, begin, end, seq);
+    }
+  }
+
+
+  namespace swig {
+    template <class SwigPySeq, class K, class T, class Compare, class Alloc >
+    inline void
+    assign(const SwigPySeq& swigpyseq, std::map<K,T,Compare,Alloc > *map) {
+      typedef typename std::map<K,T,Compare,Alloc >::value_type value_type;
+      typename SwigPySeq::const_iterator it = swigpyseq.begin();
+      for (;it != swigpyseq.end(); ++it) {
+	map->insert(value_type(it->first, it->second));
+      }
+    }
+
+    template <class K, class T, class Compare, class Alloc>
+    struct traits_asptr<std::map<K,T,Compare,Alloc > >  {
+      typedef std::map<K,T,Compare,Alloc > map_type;
+      static int asptr(PyObject *obj, map_type **val) {
+	int res = SWIG_ERROR;
+	SWIG_PYTHON_THREAD_BEGIN_BLOCK;
+	if (PyDict_Check(obj)) {
+	  SwigVar_PyObject items = PyObject_CallMethod(obj,(char *)"items",NULL);
+#if PY_VERSION_HEX >= 0x03000000
+          /* In Python 3.x the ".items()" method returns a dict_items object */
+          items = PySequence_Fast(items, ".items() didn't return a sequence!");
+#endif
+	  res = traits_asptr_stdseq<map_type, std::pair<K, T> >::asptr(items, val);
+	} else {
+	  map_type *p = 0;
+	  swig_type_info *descriptor = swig::type_info<map_type>();
+	  res = descriptor ? SWIG_ConvertPtr(obj, (void **)&p, descriptor, 0) : SWIG_ERROR;
+	  if (SWIG_IsOK(res) && val)  *val = p;
+	}
+	SWIG_PYTHON_THREAD_END_BLOCK;
+	return res;
+      }      
+    };
+      
+    template <class K, class T, class Compare, class Alloc >
+    struct traits_from<std::map<K,T,Compare,Alloc > >  {
+      typedef std::map<K,T,Compare,Alloc > map_type;
+      typedef typename map_type::const_iterator const_iterator;
+      typedef typename map_type::size_type size_type;
+
+      static PyObject *asdict(const map_type& map) {
+	SWIG_PYTHON_THREAD_BEGIN_BLOCK;
+	size_type size = map.size();
+	Py_ssize_t pysize = (size <= (size_type) INT_MAX) ? (Py_ssize_t) size : -1;
+	if (pysize < 0) {
+	  PyErr_SetString(PyExc_OverflowError, "map size not valid in python");
+	  SWIG_PYTHON_THREAD_END_BLOCK;
+	  return NULL;
+	}
+	PyObject *obj = PyDict_New();
+	for (const_iterator i= map.begin(); i!= map.end(); ++i) {
+	  swig::SwigVar_PyObject key = swig::from(i->first);
+	  swig::SwigVar_PyObject val = swig::from(i->second);
+	  PyDict_SetItem(obj, key, val);
+	}
+	SWIG_PYTHON_THREAD_END_BLOCK;
+	return obj;
+      }
+                
+      static PyObject *from(const map_type& map) {
+	swig_type_info *desc = swig::type_info<map_type>();
+	if (desc && desc->clientdata) {
+	  return SWIG_InternalNewPointerObj(new map_type(map), desc, SWIG_POINTER_OWN);
+	} else {
+	  return asdict(map);
+	}
+      }
+    };
+  }
+
+
+      namespace swig {
+	template <>  struct traits<std::map< std::string, std::pair< int,uint64_t >, std::less< std::string >, std::allocator< std::pair< std::string const,std::pair< int,uint64_t > > > > > {
+	  typedef pointer_category category;
+	  static const char* type_name() {
+	    return "std::map<" "std::string" "," "std::pair< int,uint64_t >" "," "std::less< std::string >" "," "std::allocator< std::pair< std::string const,std::pair< int,uint64_t > > >" " >";
+	  }
+	};
+      }
+    
+
+      namespace swig {
+	template <>  struct traits<std::pair< int, std::map< std::string,std::pair< int,uint64_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,uint64_t > > > > > > {
+	  typedef pointer_category category;
+	  static const char* type_name() {
+	    return "std::pair<" "int" "," "std::map< std::string,std::pair< int,uint64_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,uint64_t > > > >" " >";
+	  }
+	};
+      }
+    
+
+      namespace swig {
+	template <>  struct traits<std::map< int, std::map< std::string,std::pair< int,uint64_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,uint64_t > > > >, std::less< int >, std::allocator< std::pair< int const,std::map< std::string,std::pair< int,uint64_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,uint64_t > > > > > > > > {
+	  typedef pointer_category category;
+	  static const char* type_name() {
+	    return "std::map<" "int" "," "std::map< std::string,std::pair< int,uint64_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,uint64_t > > > >" "," "std::less< int >" "," "std::allocator< std::pair< int const,std::map< std::string,std::pair< int,uint64_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,uint64_t > > > > > >" " >";
+	  }
+	};
+      }
+    
+
+
+// interop between pytorch exposed hipStream_t and faiss
+hipStream_t cast_integer_to_cudastream_t(int64_t x) {
+  return (hipStream_t) x;
+}
+
+int64_t cast_cudastream_t_to_integer(hipStream_t x) {
+  return (int64_t) x;
+}
+
+
+
+
+
+
+SWIGINTERN int
+SWIG_AsCharArray(PyObject * obj, char *val, size_t size)
+{ 
+  char* cptr = 0; size_t csize = 0; int alloc = SWIG_OLDOBJ;
+  int res = SWIG_AsCharPtrAndSize(obj, &cptr, &csize, &alloc);
+  if (SWIG_IsOK(res)) {
+    /* special case of single char conversion when we don't need space for NUL */
+    if (size == 1 && csize == 2 && cptr && !cptr[1]) --csize;
+    if (csize <= size) {
+      if (val) {
+	if (csize) memcpy(val, cptr, csize*sizeof(char));
+	if (csize < size) memset(val + csize, 0, (size - csize)*sizeof(char));
+      }
+      if (alloc == SWIG_NEWOBJ) {
+	delete[] cptr;
+	res = SWIG_DelNewMask(res);
+      }      
+      return res;
+    }
+    if (alloc == SWIG_NEWOBJ) delete[] cptr;
+  }
+  return SWIG_TypeError;
+}
+
+
+SWIGINTERN int
+SWIG_AsVal_char (PyObject * obj, char *val)
+{    
+  int res = SWIG_AsCharArray(obj, val, 1);
+  if (!SWIG_IsOK(res)) {
+    long v;
+    res = SWIG_AddCast(SWIG_AsVal_long (obj, &v));
+    if (SWIG_IsOK(res)) {
+      if ((CHAR_MIN <= v) && (v <= CHAR_MAX)) {
+	if (val) *val = static_cast< char >(v);
+      } else {
+	res = SWIG_OverflowError;
+      }
+    }
+  }
+  return res;
+}
+
+
+SWIGINTERNINLINE PyObject *
+SWIG_From_char  (char c) 
+{ 
+  return SWIG_FromCharPtrAndSize(&c,1);
+}
+
+
+faiss::Index * downcast_index (faiss::Index *index)
+{
+    return index;
+}
+faiss::VectorTransform * downcast_VectorTransform (faiss::VectorTransform *vt)
+{
+    return vt;
+}
+faiss::IndexBinary * downcast_IndexBinary (faiss::IndexBinary *index)
+{
+    return index;
+}
+faiss::InvertedLists * downcast_InvertedLists (faiss::InvertedLists *il)
+{
+    return il;
+}
+
+
+SWIGINTERNINLINE PyObject * 
+SWIG_FromCharPtr(const char *cptr)
+{ 
+  return SWIG_FromCharPtrAndSize(cptr, (cptr ? strlen(cptr) : 0));
+}
+
+
+#include <faiss/python/python_callbacks.h>
+
+
+PyObject *swig_ptr (PyObject *a)
+{
+
+    if (PyBytes_Check(a)) {
+        return SWIG_NewPointerObj(PyBytes_AsString(a), SWIGTYPE_p_char, 0);
+    }
+    if (PyByteArray_Check(a)) {
+        return SWIG_NewPointerObj(PyByteArray_AsString(a), SWIGTYPE_p_char, 0);
+    }
+    if(!PyArray_Check(a)) {
+        PyErr_SetString(PyExc_ValueError, "input not a numpy array");
+        return NULL;
+    }
+    PyArrayObject *ao = (PyArrayObject *)a;
+
+    if(!PyArray_ISCONTIGUOUS(ao)) {
+        PyErr_SetString(PyExc_ValueError, "array is not C-contiguous");
+        return NULL;
+    }
+    void * data = PyArray_DATA(ao);
+    if(PyArray_TYPE(ao) == NPY_FLOAT32) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_float, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_FLOAT64) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_double, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_FLOAT16) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_short, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_UINT8) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_char, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_INT8) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_char, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_UINT16) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_short, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_INT16) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_short, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_UINT32) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_int, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_INT32) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_int, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_UINT64) {
+#ifdef SWIGWORDSIZE64
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_long, 0);
+#else
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_long_long, 0);
+#endif
+    }
+    if(PyArray_TYPE(ao) == NPY_INT64) {
+#ifdef SWIGWORDSIZE64
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_long, 0);
+#else
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_long_long, 0);
+#endif
+    }
+    PyErr_SetString(PyExc_ValueError, "did not recognize array type");
+    return NULL;
+}
+
+
+struct PythonInterruptCallback: faiss::InterruptCallback {
+
+    bool want_interrupt () override {
+        int err;
+        {
+            PyGILState_STATE gstate;
+            gstate = PyGILState_Ensure();
+            err = PyErr_CheckSignals();
+            PyGILState_Release(gstate);
+        }
+        return err == -1;
+    }
+
+};
+
+
+
+
+PyObject * rev_swig_ptr(float *src, npy_intp size) {
+    return PyArray_SimpleNewFromData(1, &size, NPY_FLOAT32, src);
+}
+
+
+PyObject * rev_swig_ptr(double *src, npy_intp size) {
+    return PyArray_SimpleNewFromData(1, &size, NPY_FLOAT64, src);
+}
+
+
+PyObject * rev_swig_ptr(unsigned char *src, npy_intp size) {
+    return PyArray_SimpleNewFromData(1, &size, NPY_UINT8, src);
+}
+
+
+PyObject * rev_swig_ptr(char *src, npy_intp size) {
+    return PyArray_SimpleNewFromData(1, &size, NPY_INT8, src);
+}
+
+
+PyObject * rev_swig_ptr(unsigned short *src, npy_intp size) {
+    return PyArray_SimpleNewFromData(1, &size, NPY_UINT16, src);
+}
+
+
+PyObject * rev_swig_ptr(short *src, npy_intp size) {
+    return PyArray_SimpleNewFromData(1, &size, NPY_INT16, src);
+}
+
+
+PyObject * rev_swig_ptr(int *src, npy_intp size) {
+    return PyArray_SimpleNewFromData(1, &size, NPY_INT32, src);
+}
+
+
+PyObject * rev_swig_ptr(unsigned int *src, npy_intp size) {
+    return PyArray_SimpleNewFromData(1, &size, NPY_UINT32, src);
+}
+
+
+PyObject * rev_swig_ptr(int64_t *src, npy_intp size) {
+    return PyArray_SimpleNewFromData(1, &size, NPY_INT64, src);
+}
+
+
+PyObject * rev_swig_ptr(uint64_t *src, npy_intp size) {
+    return PyArray_SimpleNewFromData(1, &size, NPY_UINT64, src);
+}
+
+
+
+// SWIG seems to have has some trouble resolving the template type here, so
+// declare explicitly
+uint16_t CMax_uint16_partition_fuzzy(
+        uint16_t *vals, int64_t *ids, size_t n,
+        size_t q_min, size_t q_max, size_t * q_out)
+{
+    return faiss::partition_fuzzy<faiss::CMax<unsigned short, int64_t> >(
+        vals, ids, n, q_min, q_max, q_out);
+}
+
+uint16_t CMin_uint16_partition_fuzzy(
+        uint16_t *vals, int64_t *ids, size_t n,
+        size_t q_min, size_t q_max, size_t * q_out)
+{
+    return faiss::partition_fuzzy<faiss::CMin<unsigned short, int64_t> >(
+        vals, ids, n, q_min, q_max, q_out);
+}
+
+// and overload with the int32 version
+
+uint16_t CMax_uint16_partition_fuzzy(
+        uint16_t *vals, int *ids, size_t n,
+        size_t q_min, size_t q_max, size_t * q_out)
+{
+    return faiss::partition_fuzzy<faiss::CMax<unsigned short, int> >(
+        vals, ids, n, q_min, q_max, q_out);
+}
+
+uint16_t CMin_uint16_partition_fuzzy(
+        uint16_t *vals, int *ids, size_t n,
+        size_t q_min, size_t q_max, size_t * q_out)
+{
+    return faiss::partition_fuzzy<faiss::CMin<unsigned short, int> >(
+        vals, ids, n, q_min, q_max, q_out);
+}
+
+
+
+uint8_t * cast_integer_to_uint8_ptr (int64_t x) {
+    return (uint8_t*)x;
+}
+
+float * cast_integer_to_float_ptr (int64_t x) {
+    return (float*)x;
+}
+
+faiss::Index::idx_t* cast_integer_to_idx_t_ptr (int64_t x) {
+    return (faiss::Index::idx_t*)x;
+}
+
+int * cast_integer_to_int_ptr (int64_t x) {
+    return (int*)x;
+}
+
+void * cast_integer_to_void_ptr (int64_t x) {
+    return (void*)x;
+}
+
+
+
+
+// numpy misses a hash table implementation, hence this class. It
+// represents not found values as -1 like in the Index implementation
+
+struct MapLong2Long {
+    std::unordered_map<int64_t, int64_t> map;
+
+    void add(size_t n, const int64_t *keys, const int64_t *vals) {
+        map.reserve(map.size() + n);
+        for (size_t i = 0; i < n; i++) {
+            map[keys[i]] = vals[i];
+        }
+    }
+
+    int64_t search(int64_t key) {
+        if (map.count(key) == 0) {
+            return -1;
+        } else {
+            return map[key];
+        }
+    }
+
+    void search_multiple(size_t n, int64_t *keys, int64_t * vals) {
+        for (size_t i = 0; i < n; i++) {
+            vals[i] = search(keys[i]);
+        }
+    }
+};
+
+
+
+    void wait() {
+        // in gdb, use return to get out of this function
+        for(int i = 0; i == 0; i += 0);
+    }
+ 
+#ifdef __cplusplus
+extern "C" {
+#endif
+SWIGINTERN PyObject *_wrap_delete_SwigPyIterator(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_SwigPyIterator" "', argument " "1"" of type '" "swig::SwigPyIterator *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator_value(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  PyObject *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator_value" "', argument " "1"" of type '" "swig::SwigPyIterator const *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (PyObject *)((swig::SwigPyIterator const *)arg1)->value();
+      } catch(swig::stop_iteration &_e) {
+        {
+          (void)_e;
+          SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
+          SWIG_fail;
+        }
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator_incr__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  swig::SwigPyIterator *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator_incr" "', argument " "1"" of type '" "swig::SwigPyIterator *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SwigPyIterator_incr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (swig::SwigPyIterator *)(arg1)->incr(arg2);
+      } catch(swig::stop_iteration &_e) {
+        {
+          (void)_e;
+          SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
+          SWIG_fail;
+        }
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator_incr__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  swig::SwigPyIterator *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator_incr" "', argument " "1"" of type '" "swig::SwigPyIterator *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (swig::SwigPyIterator *)(arg1)->incr();
+      } catch(swig::stop_iteration &_e) {
+        {
+          (void)_e;
+          SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
+          SWIG_fail;
+        }
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator_incr(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "SwigPyIterator_incr", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_swig__SwigPyIterator, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_SwigPyIterator_incr__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_swig__SwigPyIterator, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_SwigPyIterator_incr__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'SwigPyIterator_incr'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    swig::SwigPyIterator::incr(size_t)\n"
+    "    swig::SwigPyIterator::incr()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator_decr__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  swig::SwigPyIterator *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator_decr" "', argument " "1"" of type '" "swig::SwigPyIterator *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SwigPyIterator_decr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (swig::SwigPyIterator *)(arg1)->decr(arg2);
+      } catch(swig::stop_iteration &_e) {
+        {
+          (void)_e;
+          SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
+          SWIG_fail;
+        }
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator_decr__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  swig::SwigPyIterator *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator_decr" "', argument " "1"" of type '" "swig::SwigPyIterator *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (swig::SwigPyIterator *)(arg1)->decr();
+      } catch(swig::stop_iteration &_e) {
+        {
+          (void)_e;
+          SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
+          SWIG_fail;
+        }
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator_decr(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "SwigPyIterator_decr", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_swig__SwigPyIterator, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_SwigPyIterator_decr__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_swig__SwigPyIterator, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_SwigPyIterator_decr__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'SwigPyIterator_decr'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    swig::SwigPyIterator::decr(size_t)\n"
+    "    swig::SwigPyIterator::decr()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator_distance(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  swig::SwigPyIterator *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  ptrdiff_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SwigPyIterator_distance", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator_distance" "', argument " "1"" of type '" "swig::SwigPyIterator const *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_swig__SwigPyIterator,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SwigPyIterator_distance" "', argument " "2"" of type '" "swig::SwigPyIterator const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "SwigPyIterator_distance" "', argument " "2"" of type '" "swig::SwigPyIterator const &""'"); 
+  }
+  arg2 = reinterpret_cast< swig::SwigPyIterator * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = ((swig::SwigPyIterator const *)arg1)->distance((swig::SwigPyIterator const &)*arg2);
+      } catch(std::invalid_argument &_e) {
+        SWIG_Python_Raise(SWIG_NewPointerObj((new std::invalid_argument(static_cast< const std::invalid_argument& >(_e))),SWIGTYPE_p_std__invalid_argument,SWIG_POINTER_OWN), "std::invalid_argument", SWIGTYPE_p_std__invalid_argument); SWIG_fail;
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_ptrdiff_t(static_cast< ptrdiff_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator_equal(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  swig::SwigPyIterator *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  bool result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SwigPyIterator_equal", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator_equal" "', argument " "1"" of type '" "swig::SwigPyIterator const *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_swig__SwigPyIterator,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SwigPyIterator_equal" "', argument " "2"" of type '" "swig::SwigPyIterator const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "SwigPyIterator_equal" "', argument " "2"" of type '" "swig::SwigPyIterator const &""'"); 
+  }
+  arg2 = reinterpret_cast< swig::SwigPyIterator * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (bool)((swig::SwigPyIterator const *)arg1)->equal((swig::SwigPyIterator const &)*arg2);
+      } catch(std::invalid_argument &_e) {
+        SWIG_Python_Raise(SWIG_NewPointerObj((new std::invalid_argument(static_cast< const std::invalid_argument& >(_e))),SWIGTYPE_p_std__invalid_argument,SWIG_POINTER_OWN), "std::invalid_argument", SWIGTYPE_p_std__invalid_argument); SWIG_fail;
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator_copy(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  swig::SwigPyIterator *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator_copy" "', argument " "1"" of type '" "swig::SwigPyIterator const *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (swig::SwigPyIterator *)((swig::SwigPyIterator const *)arg1)->copy();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_swig__SwigPyIterator, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator_next(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  PyObject *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator_next" "', argument " "1"" of type '" "swig::SwigPyIterator *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (PyObject *)(arg1)->next();
+      } catch(swig::stop_iteration &_e) {
+        {
+          (void)_e;
+          SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
+          SWIG_fail;
+        }
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator___next__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  PyObject *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator___next__" "', argument " "1"" of type '" "swig::SwigPyIterator *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (PyObject *)(arg1)->__next__();
+      } catch(swig::stop_iteration &_e) {
+        {
+          (void)_e;
+          SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
+          SWIG_fail;
+        }
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator_previous(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  PyObject *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator_previous" "', argument " "1"" of type '" "swig::SwigPyIterator *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (PyObject *)(arg1)->previous();
+      } catch(swig::stop_iteration &_e) {
+        {
+          (void)_e;
+          SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
+          SWIG_fail;
+        }
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator_advance(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  ptrdiff_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  ptrdiff_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  swig::SwigPyIterator *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SwigPyIterator_advance", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator_advance" "', argument " "1"" of type '" "swig::SwigPyIterator *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  ecode2 = SWIG_AsVal_ptrdiff_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SwigPyIterator_advance" "', argument " "2"" of type '" "ptrdiff_t""'");
+  } 
+  arg2 = static_cast< ptrdiff_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (swig::SwigPyIterator *)(arg1)->advance(arg2);
+      } catch(swig::stop_iteration &_e) {
+        {
+          (void)_e;
+          SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
+          SWIG_fail;
+        }
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator___eq__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  swig::SwigPyIterator *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  bool result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SwigPyIterator___eq__", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator___eq__" "', argument " "1"" of type '" "swig::SwigPyIterator const *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_swig__SwigPyIterator,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SwigPyIterator___eq__" "', argument " "2"" of type '" "swig::SwigPyIterator const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "SwigPyIterator___eq__" "', argument " "2"" of type '" "swig::SwigPyIterator const &""'"); 
+  }
+  arg2 = reinterpret_cast< swig::SwigPyIterator * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)((swig::SwigPyIterator const *)arg1)->operator ==((swig::SwigPyIterator const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  PyErr_Clear();
+  Py_INCREF(Py_NotImplemented);
+  return Py_NotImplemented;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator___ne__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  swig::SwigPyIterator *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  bool result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SwigPyIterator___ne__", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator___ne__" "', argument " "1"" of type '" "swig::SwigPyIterator const *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_swig__SwigPyIterator,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SwigPyIterator___ne__" "', argument " "2"" of type '" "swig::SwigPyIterator const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "SwigPyIterator___ne__" "', argument " "2"" of type '" "swig::SwigPyIterator const &""'"); 
+  }
+  arg2 = reinterpret_cast< swig::SwigPyIterator * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)((swig::SwigPyIterator const *)arg1)->operator !=((swig::SwigPyIterator const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  PyErr_Clear();
+  Py_INCREF(Py_NotImplemented);
+  return Py_NotImplemented;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator___iadd__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  ptrdiff_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  ptrdiff_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  swig::SwigPyIterator *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SwigPyIterator___iadd__", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator___iadd__" "', argument " "1"" of type '" "swig::SwigPyIterator *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  ecode2 = SWIG_AsVal_ptrdiff_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SwigPyIterator___iadd__" "', argument " "2"" of type '" "ptrdiff_t""'");
+  } 
+  arg2 = static_cast< ptrdiff_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (swig::SwigPyIterator *) &(arg1)->operator +=(arg2);
+      } catch(swig::stop_iteration &_e) {
+        {
+          (void)_e;
+          SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
+          SWIG_fail;
+        }
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_swig__SwigPyIterator, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator___isub__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  ptrdiff_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  ptrdiff_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  swig::SwigPyIterator *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SwigPyIterator___isub__", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator___isub__" "', argument " "1"" of type '" "swig::SwigPyIterator *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  ecode2 = SWIG_AsVal_ptrdiff_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SwigPyIterator___isub__" "', argument " "2"" of type '" "ptrdiff_t""'");
+  } 
+  arg2 = static_cast< ptrdiff_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (swig::SwigPyIterator *) &(arg1)->operator -=(arg2);
+      } catch(swig::stop_iteration &_e) {
+        {
+          (void)_e;
+          SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
+          SWIG_fail;
+        }
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_swig__SwigPyIterator, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator___add__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  ptrdiff_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  ptrdiff_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  swig::SwigPyIterator *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SwigPyIterator___add__", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator___add__" "', argument " "1"" of type '" "swig::SwigPyIterator const *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  ecode2 = SWIG_AsVal_ptrdiff_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SwigPyIterator___add__" "', argument " "2"" of type '" "ptrdiff_t""'");
+  } 
+  arg2 = static_cast< ptrdiff_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (swig::SwigPyIterator *)((swig::SwigPyIterator const *)arg1)->operator +(arg2);
+      } catch(swig::stop_iteration &_e) {
+        {
+          (void)_e;
+          SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
+          SWIG_fail;
+        }
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_swig__SwigPyIterator, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  PyErr_Clear();
+  Py_INCREF(Py_NotImplemented);
+  return Py_NotImplemented;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator___sub____SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  ptrdiff_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  ptrdiff_t val2 ;
+  int ecode2 = 0 ;
+  swig::SwigPyIterator *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator___sub__" "', argument " "1"" of type '" "swig::SwigPyIterator const *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  ecode2 = SWIG_AsVal_ptrdiff_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SwigPyIterator___sub__" "', argument " "2"" of type '" "ptrdiff_t""'");
+  } 
+  arg2 = static_cast< ptrdiff_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      try {
+        result = (swig::SwigPyIterator *)((swig::SwigPyIterator const *)arg1)->operator -(arg2);
+      } catch(swig::stop_iteration &_e) {
+        {
+          (void)_e;
+          SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
+          SWIG_fail;
+        }
+      }
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_swig__SwigPyIterator, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  PyErr_Clear();
+  Py_INCREF(Py_NotImplemented);
+  return Py_NotImplemented;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator___sub____SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  swig::SwigPyIterator *arg1 = (swig::SwigPyIterator *) 0 ;
+  swig::SwigPyIterator *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  ptrdiff_t result;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_swig__SwigPyIterator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SwigPyIterator___sub__" "', argument " "1"" of type '" "swig::SwigPyIterator const *""'"); 
+  }
+  arg1 = reinterpret_cast< swig::SwigPyIterator * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_swig__SwigPyIterator,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SwigPyIterator___sub__" "', argument " "2"" of type '" "swig::SwigPyIterator const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "SwigPyIterator___sub__" "', argument " "2"" of type '" "swig::SwigPyIterator const &""'"); 
+  }
+  arg2 = reinterpret_cast< swig::SwigPyIterator * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((swig::SwigPyIterator const *)arg1)->operator -((swig::SwigPyIterator const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_ptrdiff_t(static_cast< ptrdiff_t >(result));
+  return resultobj;
+fail:
+  PyErr_Clear();
+  Py_INCREF(Py_NotImplemented);
+  return Py_NotImplemented;
+}
+
+
+SWIGINTERN PyObject *_wrap_SwigPyIterator___sub__(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "SwigPyIterator___sub__", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_swig__SwigPyIterator, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_swig__SwigPyIterator, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_SwigPyIterator___sub____SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_swig__SwigPyIterator, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_ptrdiff_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_SwigPyIterator___sub____SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  Py_INCREF(Py_NotImplemented);
+  return Py_NotImplemented;
+}
+
+
+SWIGINTERN PyObject *SwigPyIterator_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_swig__SwigPyIterator, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_new_Float32Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< float > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_Float32Vector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< float > *)new std::vector< float >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32Vector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< float > *arg1 = (std::vector< float > *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Float32Vector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32Vector_push_back" "', argument " "1"" of type '" "std::vector< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< float > * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Float32Vector_push_back" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32Vector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< float > *arg1 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32Vector_clear" "', argument " "1"" of type '" "std::vector< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< float > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32Vector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< float > *arg1 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32Vector_data" "', argument " "1"" of type '" "std::vector< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< float > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32Vector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< float > *arg1 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32Vector_size" "', argument " "1"" of type '" "std::vector< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< float > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32Vector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< float > *arg1 = (std::vector< float > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  float result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Float32Vector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32Vector_at" "', argument " "1"" of type '" "std::vector< float > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< float > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Float32Vector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)((std::vector< float > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32Vector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< float > *arg1 = (std::vector< float > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Float32Vector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32Vector_resize" "', argument " "1"" of type '" "std::vector< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< float > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Float32Vector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32Vector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< float > *arg1 = (std::vector< float > *) 0 ;
+  std::vector< float > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Float32Vector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32Vector_swap" "', argument " "1"" of type '" "std::vector< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< float > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_float_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Float32Vector_swap" "', argument " "2"" of type '" "std::vector< float > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Float32Vector_swap" "', argument " "2"" of type '" "std::vector< float > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Float32Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< float > *arg1 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_float_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Float32Vector" "', argument " "1"" of type '" "std::vector< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< float > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Float32Vector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_float_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Float32Vector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_Float64Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< double > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_Float64Vector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< double > *)new std::vector< double >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_double_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float64Vector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< double > *arg1 = (std::vector< double > *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Float64Vector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float64Vector_push_back" "', argument " "1"" of type '" "std::vector< double > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< double > * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Float64Vector_push_back" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float64Vector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< double > *arg1 = (std::vector< double > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float64Vector_clear" "', argument " "1"" of type '" "std::vector< double > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< double > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float64Vector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< double > *arg1 = (std::vector< double > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float64Vector_data" "', argument " "1"" of type '" "std::vector< double > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< double > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_double, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float64Vector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< double > *arg1 = (std::vector< double > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float64Vector_size" "', argument " "1"" of type '" "std::vector< double > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< double > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float64Vector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< double > *arg1 = (std::vector< double > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Float64Vector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float64Vector_at" "', argument " "1"" of type '" "std::vector< double > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< double > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Float64Vector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)((std::vector< double > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float64Vector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< double > *arg1 = (std::vector< double > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Float64Vector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float64Vector_resize" "', argument " "1"" of type '" "std::vector< double > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< double > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Float64Vector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float64Vector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< double > *arg1 = (std::vector< double > *) 0 ;
+  std::vector< double > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Float64Vector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float64Vector_swap" "', argument " "1"" of type '" "std::vector< double > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< double > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_double_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Float64Vector_swap" "', argument " "2"" of type '" "std::vector< double > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Float64Vector_swap" "', argument " "2"" of type '" "std::vector< double > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< double > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Float64Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< double > *arg1 = (std::vector< double > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_double_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Float64Vector" "', argument " "1"" of type '" "std::vector< double > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< double > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Float64Vector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_double_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Float64Vector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_Int8Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int8_t > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_Int8Vector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< int8_t > *)new std::vector< int8_t >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_signed_char_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int8Vector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int8_t > *arg1 = (std::vector< int8_t > *) 0 ;
+  signed char arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  signed char val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int8Vector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_signed_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int8Vector_push_back" "', argument " "1"" of type '" "std::vector< int8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int8_t > * >(argp1);
+  ecode2 = SWIG_AsVal_signed_SS_char(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int8Vector_push_back" "', argument " "2"" of type '" "signed char""'");
+  } 
+  arg2 = static_cast< signed char >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int8Vector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int8_t > *arg1 = (std::vector< int8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_signed_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int8Vector_clear" "', argument " "1"" of type '" "std::vector< int8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int8_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int8Vector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int8_t > *arg1 = (std::vector< int8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  signed char *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_signed_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int8Vector_data" "', argument " "1"" of type '" "std::vector< int8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int8_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (signed char *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_signed_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int8Vector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int8_t > *arg1 = (std::vector< int8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_signed_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int8Vector_size" "', argument " "1"" of type '" "std::vector< int8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int8_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int8Vector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int8_t > *arg1 = (std::vector< int8_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  signed char result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int8Vector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_signed_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int8Vector_at" "', argument " "1"" of type '" "std::vector< int8_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int8_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int8Vector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (signed char)((std::vector< int8_t > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_signed_SS_char(static_cast< signed char >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int8Vector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int8_t > *arg1 = (std::vector< int8_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int8Vector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_signed_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int8Vector_resize" "', argument " "1"" of type '" "std::vector< int8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int8_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int8Vector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int8Vector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int8_t > *arg1 = (std::vector< int8_t > *) 0 ;
+  std::vector< signed char > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int8Vector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_signed_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int8Vector_swap" "', argument " "1"" of type '" "std::vector< int8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int8_t > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_signed_char_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Int8Vector_swap" "', argument " "2"" of type '" "std::vector< signed char > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Int8Vector_swap" "', argument " "2"" of type '" "std::vector< signed char > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< signed char > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Int8Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int8_t > *arg1 = (std::vector< int8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_signed_char_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Int8Vector" "', argument " "1"" of type '" "std::vector< int8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int8_t > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Int8Vector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_signed_char_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Int8Vector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_Int16Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int16_t > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_Int16Vector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< int16_t > *)new std::vector< int16_t >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_short_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int16Vector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int16_t > *arg1 = (std::vector< int16_t > *) 0 ;
+  short arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  short val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int16Vector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int16Vector_push_back" "', argument " "1"" of type '" "std::vector< int16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int16_t > * >(argp1);
+  ecode2 = SWIG_AsVal_short(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int16Vector_push_back" "', argument " "2"" of type '" "short""'");
+  } 
+  arg2 = static_cast< short >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int16Vector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int16_t > *arg1 = (std::vector< int16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int16Vector_clear" "', argument " "1"" of type '" "std::vector< int16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int16_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int16Vector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int16_t > *arg1 = (std::vector< int16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  short *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int16Vector_data" "', argument " "1"" of type '" "std::vector< int16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int16_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (short *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_short, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int16Vector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int16_t > *arg1 = (std::vector< int16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int16Vector_size" "', argument " "1"" of type '" "std::vector< int16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int16_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int16Vector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int16_t > *arg1 = (std::vector< int16_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  short result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int16Vector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int16Vector_at" "', argument " "1"" of type '" "std::vector< int16_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int16_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int16Vector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (short)((std::vector< int16_t > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_short(static_cast< short >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int16Vector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int16_t > *arg1 = (std::vector< int16_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int16Vector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int16Vector_resize" "', argument " "1"" of type '" "std::vector< int16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int16_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int16Vector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int16Vector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int16_t > *arg1 = (std::vector< int16_t > *) 0 ;
+  std::vector< short > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int16Vector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int16Vector_swap" "', argument " "1"" of type '" "std::vector< int16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int16_t > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_short_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Int16Vector_swap" "', argument " "2"" of type '" "std::vector< short > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Int16Vector_swap" "', argument " "2"" of type '" "std::vector< short > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< short > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Int16Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int16_t > *arg1 = (std::vector< int16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_short_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Int16Vector" "', argument " "1"" of type '" "std::vector< int16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int16_t > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Int16Vector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_short_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Int16Vector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_Int32Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int32_t > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_Int32Vector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< int32_t > *)new std::vector< int32_t >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_int_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32Vector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int32_t > *arg1 = (std::vector< int32_t > *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int32Vector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32Vector_push_back" "', argument " "1"" of type '" "std::vector< int32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int32_t > * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int32Vector_push_back" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32Vector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int32_t > *arg1 = (std::vector< int32_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32Vector_clear" "', argument " "1"" of type '" "std::vector< int32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int32_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32Vector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int32_t > *arg1 = (std::vector< int32_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32Vector_data" "', argument " "1"" of type '" "std::vector< int32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int32_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_int, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32Vector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int32_t > *arg1 = (std::vector< int32_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32Vector_size" "', argument " "1"" of type '" "std::vector< int32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int32_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32Vector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int32_t > *arg1 = (std::vector< int32_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int32Vector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32Vector_at" "', argument " "1"" of type '" "std::vector< int32_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int32_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int32Vector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((std::vector< int32_t > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32Vector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int32_t > *arg1 = (std::vector< int32_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int32Vector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32Vector_resize" "', argument " "1"" of type '" "std::vector< int32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int32_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int32Vector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32Vector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int32_t > *arg1 = (std::vector< int32_t > *) 0 ;
+  std::vector< int > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int32Vector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32Vector_swap" "', argument " "1"" of type '" "std::vector< int32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int32_t > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_int_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Int32Vector_swap" "', argument " "2"" of type '" "std::vector< int > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Int32Vector_swap" "', argument " "2"" of type '" "std::vector< int > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Int32Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int32_t > *arg1 = (std::vector< int32_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_int_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Int32Vector" "', argument " "1"" of type '" "std::vector< int32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int32_t > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Int32Vector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_int_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Int32Vector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_Int64Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int64_t > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_Int64Vector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< int64_t > *)new std::vector< int64_t >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_long_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64Vector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int64_t > *arg1 = (std::vector< int64_t > *) 0 ;
+  long arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int64Vector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64Vector_push_back" "', argument " "1"" of type '" "std::vector< int64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int64_t > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int64Vector_push_back" "', argument " "2"" of type '" "long""'");
+  } 
+  arg2 = static_cast< long >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64Vector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int64_t > *arg1 = (std::vector< int64_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64Vector_clear" "', argument " "1"" of type '" "std::vector< int64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int64_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64Vector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int64_t > *arg1 = (std::vector< int64_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  long *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64Vector_data" "', argument " "1"" of type '" "std::vector< int64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int64_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (long *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64Vector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int64_t > *arg1 = (std::vector< int64_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64Vector_size" "', argument " "1"" of type '" "std::vector< int64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int64_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64Vector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int64_t > *arg1 = (std::vector< int64_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  long result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int64Vector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64Vector_at" "', argument " "1"" of type '" "std::vector< int64_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int64_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int64Vector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (long)((std::vector< int64_t > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64Vector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int64_t > *arg1 = (std::vector< int64_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int64Vector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64Vector_resize" "', argument " "1"" of type '" "std::vector< int64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int64_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int64Vector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64Vector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int64_t > *arg1 = (std::vector< int64_t > *) 0 ;
+  std::vector< long > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int64Vector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64Vector_swap" "', argument " "1"" of type '" "std::vector< int64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int64_t > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_long_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Int64Vector_swap" "', argument " "2"" of type '" "std::vector< long > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Int64Vector_swap" "', argument " "2"" of type '" "std::vector< long > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< long > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Int64Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< int64_t > *arg1 = (std::vector< int64_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_long_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Int64Vector" "', argument " "1"" of type '" "std::vector< int64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< int64_t > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Int64Vector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_long_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Int64Vector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_UInt8Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint8_t > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_UInt8Vector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< uint8_t > *)new std::vector< uint8_t >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_char_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8Vector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint8_t > *arg1 = (std::vector< uint8_t > *) 0 ;
+  unsigned char arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned char val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt8Vector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8Vector_push_back" "', argument " "1"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint8_t > * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_char(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt8Vector_push_back" "', argument " "2"" of type '" "unsigned char""'");
+  } 
+  arg2 = static_cast< unsigned char >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8Vector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint8_t > *arg1 = (std::vector< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8Vector_clear" "', argument " "1"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint8_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8Vector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint8_t > *arg1 = (std::vector< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  unsigned char *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8Vector_data" "', argument " "1"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint8_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (unsigned char *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8Vector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint8_t > *arg1 = (std::vector< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8Vector_size" "', argument " "1"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint8_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8Vector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint8_t > *arg1 = (std::vector< uint8_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  unsigned char result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt8Vector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8Vector_at" "', argument " "1"" of type '" "std::vector< uint8_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint8_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt8Vector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (unsigned char)((std::vector< uint8_t > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_char(static_cast< unsigned char >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8Vector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint8_t > *arg1 = (std::vector< uint8_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt8Vector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8Vector_resize" "', argument " "1"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint8_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt8Vector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8Vector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint8_t > *arg1 = (std::vector< uint8_t > *) 0 ;
+  std::vector< unsigned char > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt8Vector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8Vector_swap" "', argument " "1"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint8_t > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_unsigned_char_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "UInt8Vector_swap" "', argument " "2"" of type '" "std::vector< unsigned char > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "UInt8Vector_swap" "', argument " "2"" of type '" "std::vector< unsigned char > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< unsigned char > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_UInt8Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint8_t > *arg1 = (std::vector< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_char_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_UInt8Vector" "', argument " "1"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint8_t > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *UInt8Vector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_unsigned_char_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *UInt8Vector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_UInt16Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint16_t > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_UInt16Vector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< uint16_t > *)new std::vector< uint16_t >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_short_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt16Vector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint16_t > *arg1 = (std::vector< uint16_t > *) 0 ;
+  unsigned short arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned short val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt16Vector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt16Vector_push_back" "', argument " "1"" of type '" "std::vector< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint16_t > * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_short(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt16Vector_push_back" "', argument " "2"" of type '" "unsigned short""'");
+  } 
+  arg2 = static_cast< unsigned short >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt16Vector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint16_t > *arg1 = (std::vector< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt16Vector_clear" "', argument " "1"" of type '" "std::vector< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint16_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt16Vector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint16_t > *arg1 = (std::vector< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  unsigned short *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt16Vector_data" "', argument " "1"" of type '" "std::vector< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint16_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (unsigned short *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_short, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt16Vector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint16_t > *arg1 = (std::vector< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt16Vector_size" "', argument " "1"" of type '" "std::vector< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint16_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt16Vector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint16_t > *arg1 = (std::vector< uint16_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  unsigned short result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt16Vector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt16Vector_at" "', argument " "1"" of type '" "std::vector< uint16_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint16_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt16Vector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (unsigned short)((std::vector< uint16_t > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_short(static_cast< unsigned short >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt16Vector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint16_t > *arg1 = (std::vector< uint16_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt16Vector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt16Vector_resize" "', argument " "1"" of type '" "std::vector< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint16_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt16Vector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt16Vector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint16_t > *arg1 = (std::vector< uint16_t > *) 0 ;
+  std::vector< unsigned short > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt16Vector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_short_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt16Vector_swap" "', argument " "1"" of type '" "std::vector< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint16_t > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_unsigned_short_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "UInt16Vector_swap" "', argument " "2"" of type '" "std::vector< unsigned short > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "UInt16Vector_swap" "', argument " "2"" of type '" "std::vector< unsigned short > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< unsigned short > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_UInt16Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint16_t > *arg1 = (std::vector< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_short_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_UInt16Vector" "', argument " "1"" of type '" "std::vector< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint16_t > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *UInt16Vector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_unsigned_short_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *UInt16Vector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_UInt32Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint32_t > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_UInt32Vector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< uint32_t > *)new std::vector< uint32_t >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_int_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt32Vector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint32_t > *arg1 = (std::vector< uint32_t > *) 0 ;
+  unsigned int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt32Vector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt32Vector_push_back" "', argument " "1"" of type '" "std::vector< uint32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint32_t > * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt32Vector_push_back" "', argument " "2"" of type '" "unsigned int""'");
+  } 
+  arg2 = static_cast< unsigned int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt32Vector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint32_t > *arg1 = (std::vector< uint32_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt32Vector_clear" "', argument " "1"" of type '" "std::vector< uint32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint32_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt32Vector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint32_t > *arg1 = (std::vector< uint32_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  unsigned int *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt32Vector_data" "', argument " "1"" of type '" "std::vector< uint32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint32_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (unsigned int *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_int, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt32Vector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint32_t > *arg1 = (std::vector< uint32_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt32Vector_size" "', argument " "1"" of type '" "std::vector< uint32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint32_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt32Vector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint32_t > *arg1 = (std::vector< uint32_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  unsigned int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt32Vector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt32Vector_at" "', argument " "1"" of type '" "std::vector< uint32_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint32_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt32Vector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (unsigned int)((std::vector< uint32_t > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_int(static_cast< unsigned int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt32Vector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint32_t > *arg1 = (std::vector< uint32_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt32Vector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt32Vector_resize" "', argument " "1"" of type '" "std::vector< uint32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint32_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt32Vector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt32Vector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint32_t > *arg1 = (std::vector< uint32_t > *) 0 ;
+  std::vector< unsigned int > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt32Vector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt32Vector_swap" "', argument " "1"" of type '" "std::vector< uint32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint32_t > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_unsigned_int_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "UInt32Vector_swap" "', argument " "2"" of type '" "std::vector< unsigned int > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "UInt32Vector_swap" "', argument " "2"" of type '" "std::vector< unsigned int > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< unsigned int > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_UInt32Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint32_t > *arg1 = (std::vector< uint32_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_int_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_UInt32Vector" "', argument " "1"" of type '" "std::vector< uint32_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint32_t > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *UInt32Vector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_unsigned_int_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *UInt32Vector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_UInt64Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint64_t > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_UInt64Vector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< uint64_t > *)new std::vector< uint64_t >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_long_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt64Vector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint64_t > *arg1 = (std::vector< uint64_t > *) 0 ;
+  unsigned long arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt64Vector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt64Vector_push_back" "', argument " "1"" of type '" "std::vector< uint64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint64_t > * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt64Vector_push_back" "', argument " "2"" of type '" "unsigned long""'");
+  } 
+  arg2 = static_cast< unsigned long >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt64Vector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint64_t > *arg1 = (std::vector< uint64_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt64Vector_clear" "', argument " "1"" of type '" "std::vector< uint64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint64_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt64Vector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint64_t > *arg1 = (std::vector< uint64_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  unsigned long *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt64Vector_data" "', argument " "1"" of type '" "std::vector< uint64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint64_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (unsigned long *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt64Vector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint64_t > *arg1 = (std::vector< uint64_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt64Vector_size" "', argument " "1"" of type '" "std::vector< uint64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint64_t > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt64Vector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint64_t > *arg1 = (std::vector< uint64_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  unsigned long result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt64Vector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt64Vector_at" "', argument " "1"" of type '" "std::vector< uint64_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint64_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt64Vector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (unsigned long)((std::vector< uint64_t > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt64Vector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint64_t > *arg1 = (std::vector< uint64_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt64Vector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt64Vector_resize" "', argument " "1"" of type '" "std::vector< uint64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint64_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt64Vector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt64Vector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint64_t > *arg1 = (std::vector< uint64_t > *) 0 ;
+  std::vector< unsigned long > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt64Vector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt64Vector_swap" "', argument " "1"" of type '" "std::vector< uint64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint64_t > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_unsigned_long_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "UInt64Vector_swap" "', argument " "2"" of type '" "std::vector< unsigned long > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "UInt64Vector_swap" "', argument " "2"" of type '" "std::vector< unsigned long > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< unsigned long > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_UInt64Vector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< uint64_t > *arg1 = (std::vector< uint64_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_unsigned_long_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_UInt64Vector" "', argument " "1"" of type '" "std::vector< uint64_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< uint64_t > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *UInt64Vector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_unsigned_long_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *UInt64Vector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_Float32VectorVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< float > > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_Float32VectorVector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< std::vector< float > > *)new std::vector< std::vector< float > >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32VectorVector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< float > > *arg1 = (std::vector< std::vector< float > > *) 0 ;
+  std::vector< float > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Float32VectorVector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32VectorVector_push_back" "', argument " "1"" of type '" "std::vector< std::vector< float > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< float > > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_float_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Float32VectorVector_push_back" "', argument " "2"" of type '" "std::vector< float >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Float32VectorVector_push_back" "', argument " "2"" of type '" "std::vector< float >""'");
+    } else {
+      std::vector< float > * temp = reinterpret_cast< std::vector< float > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32VectorVector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< float > > *arg1 = (std::vector< std::vector< float > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32VectorVector_clear" "', argument " "1"" of type '" "std::vector< std::vector< float > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< float > > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32VectorVector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< float > > *arg1 = (std::vector< std::vector< float > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32VectorVector_data" "', argument " "1"" of type '" "std::vector< std::vector< float > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< float > > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< float > *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32VectorVector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< float > > *arg1 = (std::vector< std::vector< float > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32VectorVector_size" "', argument " "1"" of type '" "std::vector< std::vector< float > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< float > > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32VectorVector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< float > > *arg1 = (std::vector< std::vector< float > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  std::vector< float > result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Float32VectorVector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32VectorVector_at" "', argument " "1"" of type '" "std::vector< std::vector< float > > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< float > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Float32VectorVector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((std::vector< std::vector< float > > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< float >(static_cast< const std::vector< float >& >(result))), SWIGTYPE_p_std__vectorT_float_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32VectorVector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< float > > *arg1 = (std::vector< std::vector< float > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Float32VectorVector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32VectorVector_resize" "', argument " "1"" of type '" "std::vector< std::vector< float > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< float > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Float32VectorVector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Float32VectorVector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< float > > *arg1 = (std::vector< std::vector< float > > *) 0 ;
+  std::vector< std::vector< float > > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Float32VectorVector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Float32VectorVector_swap" "', argument " "1"" of type '" "std::vector< std::vector< float > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< float > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Float32VectorVector_swap" "', argument " "2"" of type '" "std::vector< std::vector< float > > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Float32VectorVector_swap" "', argument " "2"" of type '" "std::vector< std::vector< float > > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< std::vector< float > > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Float32VectorVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< float > > *arg1 = (std::vector< std::vector< float > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Float32VectorVector" "', argument " "1"" of type '" "std::vector< std::vector< float > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< float > > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Float32VectorVector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Float32VectorVector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_UInt8VectorVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< uint8_t > > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_UInt8VectorVector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< std::vector< uint8_t > > *)new std::vector< std::vector< uint8_t > >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8VectorVector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< uint8_t > > *arg1 = (std::vector< std::vector< uint8_t > > *) 0 ;
+  std::vector< uint8_t > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt8VectorVector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8VectorVector_push_back" "', argument " "1"" of type '" "std::vector< std::vector< uint8_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< uint8_t > > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_unsigned_char_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "UInt8VectorVector_push_back" "', argument " "2"" of type '" "std::vector< uint8_t >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "UInt8VectorVector_push_back" "', argument " "2"" of type '" "std::vector< uint8_t >""'");
+    } else {
+      std::vector< uint8_t > * temp = reinterpret_cast< std::vector< uint8_t > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8VectorVector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< uint8_t > > *arg1 = (std::vector< std::vector< uint8_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8VectorVector_clear" "', argument " "1"" of type '" "std::vector< std::vector< uint8_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< uint8_t > > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8VectorVector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< uint8_t > > *arg1 = (std::vector< std::vector< uint8_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< uint8_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8VectorVector_data" "', argument " "1"" of type '" "std::vector< std::vector< uint8_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< uint8_t > > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< uint8_t > *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8VectorVector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< uint8_t > > *arg1 = (std::vector< std::vector< uint8_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8VectorVector_size" "', argument " "1"" of type '" "std::vector< std::vector< uint8_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< uint8_t > > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8VectorVector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< uint8_t > > *arg1 = (std::vector< std::vector< uint8_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  std::vector< uint8_t > result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt8VectorVector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8VectorVector_at" "', argument " "1"" of type '" "std::vector< std::vector< uint8_t > > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< uint8_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt8VectorVector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((std::vector< std::vector< uint8_t > > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< uint8_t >(static_cast< const std::vector< uint8_t >& >(result))), SWIGTYPE_p_std__vectorT_unsigned_char_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8VectorVector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< uint8_t > > *arg1 = (std::vector< std::vector< uint8_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt8VectorVector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8VectorVector_resize" "', argument " "1"" of type '" "std::vector< std::vector< uint8_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< uint8_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "UInt8VectorVector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_UInt8VectorVector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< uint8_t > > *arg1 = (std::vector< std::vector< uint8_t > > *) 0 ;
+  std::vector< std::vector< uint8_t > > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "UInt8VectorVector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "UInt8VectorVector_swap" "', argument " "1"" of type '" "std::vector< std::vector< uint8_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< uint8_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "UInt8VectorVector_swap" "', argument " "2"" of type '" "std::vector< std::vector< uint8_t > > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "UInt8VectorVector_swap" "', argument " "2"" of type '" "std::vector< std::vector< uint8_t > > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< std::vector< uint8_t > > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_UInt8VectorVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< uint8_t > > *arg1 = (std::vector< std::vector< uint8_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_UInt8VectorVector" "', argument " "1"" of type '" "std::vector< std::vector< uint8_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< uint8_t > > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *UInt8VectorVector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *UInt8VectorVector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_Int32VectorVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int32_t > > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_Int32VectorVector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< std::vector< int32_t > > *)new std::vector< std::vector< int32_t > >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32VectorVector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int32_t > > *arg1 = (std::vector< std::vector< int32_t > > *) 0 ;
+  std::vector< int32_t > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int32VectorVector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32VectorVector_push_back" "', argument " "1"" of type '" "std::vector< std::vector< int32_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int32_t > > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_int_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Int32VectorVector_push_back" "', argument " "2"" of type '" "std::vector< int32_t >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Int32VectorVector_push_back" "', argument " "2"" of type '" "std::vector< int32_t >""'");
+    } else {
+      std::vector< int32_t > * temp = reinterpret_cast< std::vector< int32_t > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32VectorVector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int32_t > > *arg1 = (std::vector< std::vector< int32_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32VectorVector_clear" "', argument " "1"" of type '" "std::vector< std::vector< int32_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int32_t > > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32VectorVector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int32_t > > *arg1 = (std::vector< std::vector< int32_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< int32_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32VectorVector_data" "', argument " "1"" of type '" "std::vector< std::vector< int32_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int32_t > > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< int32_t > *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32VectorVector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int32_t > > *arg1 = (std::vector< std::vector< int32_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32VectorVector_size" "', argument " "1"" of type '" "std::vector< std::vector< int32_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int32_t > > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32VectorVector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int32_t > > *arg1 = (std::vector< std::vector< int32_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  std::vector< int32_t > result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int32VectorVector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32VectorVector_at" "', argument " "1"" of type '" "std::vector< std::vector< int32_t > > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int32_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int32VectorVector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((std::vector< std::vector< int32_t > > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< int32_t >(static_cast< const std::vector< int32_t >& >(result))), SWIGTYPE_p_std__vectorT_int_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32VectorVector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int32_t > > *arg1 = (std::vector< std::vector< int32_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int32VectorVector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32VectorVector_resize" "', argument " "1"" of type '" "std::vector< std::vector< int32_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int32_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int32VectorVector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int32VectorVector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int32_t > > *arg1 = (std::vector< std::vector< int32_t > > *) 0 ;
+  std::vector< std::vector< int32_t > > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int32VectorVector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int32VectorVector_swap" "', argument " "1"" of type '" "std::vector< std::vector< int32_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int32_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Int32VectorVector_swap" "', argument " "2"" of type '" "std::vector< std::vector< int32_t > > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Int32VectorVector_swap" "', argument " "2"" of type '" "std::vector< std::vector< int32_t > > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< std::vector< int32_t > > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Int32VectorVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int32_t > > *arg1 = (std::vector< std::vector< int32_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Int32VectorVector" "', argument " "1"" of type '" "std::vector< std::vector< int32_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int32_t > > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Int32VectorVector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Int32VectorVector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_Int64VectorVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int64_t > > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_Int64VectorVector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< std::vector< int64_t > > *)new std::vector< std::vector< int64_t > >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64VectorVector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int64_t > > *arg1 = (std::vector< std::vector< int64_t > > *) 0 ;
+  std::vector< int64_t > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int64VectorVector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64VectorVector_push_back" "', argument " "1"" of type '" "std::vector< std::vector< int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int64_t > > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_long_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Int64VectorVector_push_back" "', argument " "2"" of type '" "std::vector< int64_t >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Int64VectorVector_push_back" "', argument " "2"" of type '" "std::vector< int64_t >""'");
+    } else {
+      std::vector< int64_t > * temp = reinterpret_cast< std::vector< int64_t > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64VectorVector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int64_t > > *arg1 = (std::vector< std::vector< int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64VectorVector_clear" "', argument " "1"" of type '" "std::vector< std::vector< int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int64_t > > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64VectorVector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int64_t > > *arg1 = (std::vector< std::vector< int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< int64_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64VectorVector_data" "', argument " "1"" of type '" "std::vector< std::vector< int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int64_t > > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< int64_t > *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64VectorVector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int64_t > > *arg1 = (std::vector< std::vector< int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64VectorVector_size" "', argument " "1"" of type '" "std::vector< std::vector< int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int64_t > > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64VectorVector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int64_t > > *arg1 = (std::vector< std::vector< int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  std::vector< int64_t > result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int64VectorVector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64VectorVector_at" "', argument " "1"" of type '" "std::vector< std::vector< int64_t > > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int64VectorVector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((std::vector< std::vector< int64_t > > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< int64_t >(static_cast< const std::vector< int64_t >& >(result))), SWIGTYPE_p_std__vectorT_long_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64VectorVector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int64_t > > *arg1 = (std::vector< std::vector< int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int64VectorVector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64VectorVector_resize" "', argument " "1"" of type '" "std::vector< std::vector< int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Int64VectorVector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Int64VectorVector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int64_t > > *arg1 = (std::vector< std::vector< int64_t > > *) 0 ;
+  std::vector< std::vector< int64_t > > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Int64VectorVector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Int64VectorVector_swap" "', argument " "1"" of type '" "std::vector< std::vector< int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int64_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Int64VectorVector_swap" "', argument " "2"" of type '" "std::vector< std::vector< int64_t > > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Int64VectorVector_swap" "', argument " "2"" of type '" "std::vector< std::vector< int64_t > > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< std::vector< int64_t > > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Int64VectorVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< std::vector< int64_t > > *arg1 = (std::vector< std::vector< int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Int64VectorVector" "', argument " "1"" of type '" "std::vector< std::vector< int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< std::vector< int64_t > > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Int64VectorVector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Int64VectorVector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_VectorTransformVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::VectorTransform * > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_VectorTransformVector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< faiss::VectorTransform * > *)new std::vector< faiss::VectorTransform * >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransformVector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::VectorTransform * > *arg1 = (std::vector< faiss::VectorTransform * > *) 0 ;
+  faiss::VectorTransform *arg2 = (faiss::VectorTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorTransformVector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransformVector_push_back" "', argument " "1"" of type '" "std::vector< faiss::VectorTransform * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::VectorTransform * > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "VectorTransformVector_push_back" "', argument " "2"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::VectorTransform * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransformVector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::VectorTransform * > *arg1 = (std::vector< faiss::VectorTransform * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransformVector_clear" "', argument " "1"" of type '" "std::vector< faiss::VectorTransform * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::VectorTransform * > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransformVector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::VectorTransform * > *arg1 = (std::vector< faiss::VectorTransform * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::VectorTransform **result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransformVector_data" "', argument " "1"" of type '" "std::vector< faiss::VectorTransform * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::VectorTransform * > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::VectorTransform **)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_p_faiss__VectorTransform, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransformVector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::VectorTransform * > *arg1 = (std::vector< faiss::VectorTransform * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransformVector_size" "', argument " "1"" of type '" "std::vector< faiss::VectorTransform * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::VectorTransform * > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransformVector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::VectorTransform * > *arg1 = (std::vector< faiss::VectorTransform * > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::VectorTransform *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorTransformVector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransformVector_at" "', argument " "1"" of type '" "std::vector< faiss::VectorTransform * > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::VectorTransform * > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VectorTransformVector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::VectorTransform *)((std::vector< faiss::VectorTransform * > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransformVector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::VectorTransform * > *arg1 = (std::vector< faiss::VectorTransform * > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorTransformVector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransformVector_resize" "', argument " "1"" of type '" "std::vector< faiss::VectorTransform * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::VectorTransform * > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VectorTransformVector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransformVector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::VectorTransform * > *arg1 = (std::vector< faiss::VectorTransform * > *) 0 ;
+  std::vector< faiss::VectorTransform * > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorTransformVector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransformVector_swap" "', argument " "1"" of type '" "std::vector< faiss::VectorTransform * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::VectorTransform * > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "VectorTransformVector_swap" "', argument " "2"" of type '" "std::vector< faiss::VectorTransform * > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "VectorTransformVector_swap" "', argument " "2"" of type '" "std::vector< faiss::VectorTransform * > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::VectorTransform * > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_VectorTransformVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::VectorTransform * > *arg1 = (std::vector< faiss::VectorTransform * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_VectorTransformVector" "', argument " "1"" of type '" "std::vector< faiss::VectorTransform * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::VectorTransform * > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *VectorTransformVector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *VectorTransformVector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_OperatingPointVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OperatingPoint > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_OperatingPointVector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< faiss::OperatingPoint > *)new std::vector< faiss::OperatingPoint >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPointVector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OperatingPoint > *arg1 = (std::vector< faiss::OperatingPoint > *) 0 ;
+  faiss::OperatingPoint arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OperatingPointVector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPointVector_push_back" "', argument " "1"" of type '" "std::vector< faiss::OperatingPoint > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OperatingPoint > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__OperatingPoint,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OperatingPointVector_push_back" "', argument " "2"" of type '" "faiss::OperatingPoint""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "OperatingPointVector_push_back" "', argument " "2"" of type '" "faiss::OperatingPoint""'");
+    } else {
+      faiss::OperatingPoint * temp = reinterpret_cast< faiss::OperatingPoint * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPointVector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OperatingPoint > *arg1 = (std::vector< faiss::OperatingPoint > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPointVector_clear" "', argument " "1"" of type '" "std::vector< faiss::OperatingPoint > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OperatingPoint > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPointVector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OperatingPoint > *arg1 = (std::vector< faiss::OperatingPoint > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::OperatingPoint *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPointVector_data" "', argument " "1"" of type '" "std::vector< faiss::OperatingPoint > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OperatingPoint > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::OperatingPoint *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__OperatingPoint, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPointVector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OperatingPoint > *arg1 = (std::vector< faiss::OperatingPoint > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPointVector_size" "', argument " "1"" of type '" "std::vector< faiss::OperatingPoint > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OperatingPoint > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPointVector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OperatingPoint > *arg1 = (std::vector< faiss::OperatingPoint > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::OperatingPoint result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OperatingPointVector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPointVector_at" "', argument " "1"" of type '" "std::vector< faiss::OperatingPoint > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OperatingPoint > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OperatingPointVector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((std::vector< faiss::OperatingPoint > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new faiss::OperatingPoint(static_cast< const faiss::OperatingPoint& >(result))), SWIGTYPE_p_faiss__OperatingPoint, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPointVector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OperatingPoint > *arg1 = (std::vector< faiss::OperatingPoint > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OperatingPointVector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPointVector_resize" "', argument " "1"" of type '" "std::vector< faiss::OperatingPoint > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OperatingPoint > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OperatingPointVector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPointVector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OperatingPoint > *arg1 = (std::vector< faiss::OperatingPoint > *) 0 ;
+  std::vector< faiss::OperatingPoint > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OperatingPointVector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPointVector_swap" "', argument " "1"" of type '" "std::vector< faiss::OperatingPoint > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OperatingPoint > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OperatingPointVector_swap" "', argument " "2"" of type '" "std::vector< faiss::OperatingPoint > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "OperatingPointVector_swap" "', argument " "2"" of type '" "std::vector< faiss::OperatingPoint > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::OperatingPoint > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_OperatingPointVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OperatingPoint > *arg1 = (std::vector< faiss::OperatingPoint > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_OperatingPointVector" "', argument " "1"" of type '" "std::vector< faiss::OperatingPoint > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OperatingPoint > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *OperatingPointVector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *OperatingPointVector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_InvertedListsPtrVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::InvertedLists * > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_InvertedListsPtrVector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< faiss::InvertedLists * > *)new std::vector< faiss::InvertedLists * >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__InvertedLists_p_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsPtrVector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::InvertedLists * > *arg1 = (std::vector< faiss::InvertedLists * > *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedListsPtrVector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__InvertedLists_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsPtrVector_push_back" "', argument " "1"" of type '" "std::vector< faiss::InvertedLists * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::InvertedLists * > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "InvertedListsPtrVector_push_back" "', argument " "2"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsPtrVector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::InvertedLists * > *arg1 = (std::vector< faiss::InvertedLists * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__InvertedLists_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsPtrVector_clear" "', argument " "1"" of type '" "std::vector< faiss::InvertedLists * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::InvertedLists * > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsPtrVector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::InvertedLists * > *arg1 = (std::vector< faiss::InvertedLists * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::InvertedLists **result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__InvertedLists_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsPtrVector_data" "', argument " "1"" of type '" "std::vector< faiss::InvertedLists * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::InvertedLists * > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists **)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_p_faiss__InvertedLists, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsPtrVector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::InvertedLists * > *arg1 = (std::vector< faiss::InvertedLists * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__InvertedLists_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsPtrVector_size" "', argument " "1"" of type '" "std::vector< faiss::InvertedLists * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::InvertedLists * > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsPtrVector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::InvertedLists * > *arg1 = (std::vector< faiss::InvertedLists * > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedLists *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedListsPtrVector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__InvertedLists_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsPtrVector_at" "', argument " "1"" of type '" "std::vector< faiss::InvertedLists * > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::InvertedLists * > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedListsPtrVector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists *)((std::vector< faiss::InvertedLists * > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsPtrVector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::InvertedLists * > *arg1 = (std::vector< faiss::InvertedLists * > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedListsPtrVector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__InvertedLists_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsPtrVector_resize" "', argument " "1"" of type '" "std::vector< faiss::InvertedLists * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::InvertedLists * > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedListsPtrVector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsPtrVector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::InvertedLists * > *arg1 = (std::vector< faiss::InvertedLists * > *) 0 ;
+  std::vector< faiss::InvertedLists * > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedListsPtrVector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__InvertedLists_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsPtrVector_swap" "', argument " "1"" of type '" "std::vector< faiss::InvertedLists * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::InvertedLists * > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_faiss__InvertedLists_p_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "InvertedListsPtrVector_swap" "', argument " "2"" of type '" "std::vector< faiss::InvertedLists * > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "InvertedListsPtrVector_swap" "', argument " "2"" of type '" "std::vector< faiss::InvertedLists * > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::InvertedLists * > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_InvertedListsPtrVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::InvertedLists * > *arg1 = (std::vector< faiss::InvertedLists * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__InvertedLists_p_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_InvertedListsPtrVector" "', argument " "1"" of type '" "std::vector< faiss::InvertedLists * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::InvertedLists * > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *InvertedListsPtrVector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_faiss__InvertedLists_p_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *InvertedListsPtrVector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_RepeatVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::Repeat > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_RepeatVector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< faiss::Repeat > *)new std::vector< faiss::Repeat >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__Repeat_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RepeatVector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::Repeat > *arg1 = (std::vector< faiss::Repeat > *) 0 ;
+  faiss::Repeat arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RepeatVector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__Repeat_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RepeatVector_push_back" "', argument " "1"" of type '" "std::vector< faiss::Repeat > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::Repeat > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__Repeat,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "RepeatVector_push_back" "', argument " "2"" of type '" "faiss::Repeat""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "RepeatVector_push_back" "', argument " "2"" of type '" "faiss::Repeat""'");
+    } else {
+      faiss::Repeat * temp = reinterpret_cast< faiss::Repeat * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RepeatVector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::Repeat > *arg1 = (std::vector< faiss::Repeat > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__Repeat_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RepeatVector_clear" "', argument " "1"" of type '" "std::vector< faiss::Repeat > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::Repeat > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RepeatVector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::Repeat > *arg1 = (std::vector< faiss::Repeat > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Repeat *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__Repeat_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RepeatVector_data" "', argument " "1"" of type '" "std::vector< faiss::Repeat > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::Repeat > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Repeat *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Repeat, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RepeatVector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::Repeat > *arg1 = (std::vector< faiss::Repeat > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__Repeat_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RepeatVector_size" "', argument " "1"" of type '" "std::vector< faiss::Repeat > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::Repeat > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RepeatVector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::Repeat > *arg1 = (std::vector< faiss::Repeat > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::Repeat result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RepeatVector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__Repeat_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RepeatVector_at" "', argument " "1"" of type '" "std::vector< faiss::Repeat > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::Repeat > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RepeatVector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((std::vector< faiss::Repeat > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new faiss::Repeat(static_cast< const faiss::Repeat& >(result))), SWIGTYPE_p_faiss__Repeat, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RepeatVector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::Repeat > *arg1 = (std::vector< faiss::Repeat > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RepeatVector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__Repeat_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RepeatVector_resize" "', argument " "1"" of type '" "std::vector< faiss::Repeat > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::Repeat > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RepeatVector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RepeatVector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::Repeat > *arg1 = (std::vector< faiss::Repeat > *) 0 ;
+  std::vector< faiss::Repeat > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RepeatVector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__Repeat_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RepeatVector_swap" "', argument " "1"" of type '" "std::vector< faiss::Repeat > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::Repeat > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_faiss__Repeat_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "RepeatVector_swap" "', argument " "2"" of type '" "std::vector< faiss::Repeat > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "RepeatVector_swap" "', argument " "2"" of type '" "std::vector< faiss::Repeat > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::Repeat > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_RepeatVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::Repeat > *arg1 = (std::vector< faiss::Repeat > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__Repeat_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_RepeatVector" "', argument " "1"" of type '" "std::vector< faiss::Repeat > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::Repeat > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *RepeatVector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_faiss__Repeat_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *RepeatVector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_ClusteringIterationStatsVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::ClusteringIterationStats > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ClusteringIterationStatsVector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< faiss::ClusteringIterationStats > *)new std::vector< faiss::ClusteringIterationStats >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStatsVector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::ClusteringIterationStats > *arg1 = (std::vector< faiss::ClusteringIterationStats > *) 0 ;
+  faiss::ClusteringIterationStats arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringIterationStatsVector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStatsVector_push_back" "', argument " "1"" of type '" "std::vector< faiss::ClusteringIterationStats > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::ClusteringIterationStats > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__ClusteringIterationStats,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ClusteringIterationStatsVector_push_back" "', argument " "2"" of type '" "faiss::ClusteringIterationStats""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "ClusteringIterationStatsVector_push_back" "', argument " "2"" of type '" "faiss::ClusteringIterationStats""'");
+    } else {
+      faiss::ClusteringIterationStats * temp = reinterpret_cast< faiss::ClusteringIterationStats * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStatsVector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::ClusteringIterationStats > *arg1 = (std::vector< faiss::ClusteringIterationStats > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStatsVector_clear" "', argument " "1"" of type '" "std::vector< faiss::ClusteringIterationStats > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::ClusteringIterationStats > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStatsVector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::ClusteringIterationStats > *arg1 = (std::vector< faiss::ClusteringIterationStats > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ClusteringIterationStats *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStatsVector_data" "', argument " "1"" of type '" "std::vector< faiss::ClusteringIterationStats > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::ClusteringIterationStats > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ClusteringIterationStats *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ClusteringIterationStats, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStatsVector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::ClusteringIterationStats > *arg1 = (std::vector< faiss::ClusteringIterationStats > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStatsVector_size" "', argument " "1"" of type '" "std::vector< faiss::ClusteringIterationStats > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::ClusteringIterationStats > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStatsVector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::ClusteringIterationStats > *arg1 = (std::vector< faiss::ClusteringIterationStats > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::ClusteringIterationStats result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringIterationStatsVector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStatsVector_at" "', argument " "1"" of type '" "std::vector< faiss::ClusteringIterationStats > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::ClusteringIterationStats > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringIterationStatsVector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((std::vector< faiss::ClusteringIterationStats > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new faiss::ClusteringIterationStats(static_cast< const faiss::ClusteringIterationStats& >(result))), SWIGTYPE_p_faiss__ClusteringIterationStats, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStatsVector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::ClusteringIterationStats > *arg1 = (std::vector< faiss::ClusteringIterationStats > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringIterationStatsVector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStatsVector_resize" "', argument " "1"" of type '" "std::vector< faiss::ClusteringIterationStats > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::ClusteringIterationStats > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringIterationStatsVector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStatsVector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::ClusteringIterationStats > *arg1 = (std::vector< faiss::ClusteringIterationStats > *) 0 ;
+  std::vector< faiss::ClusteringIterationStats > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringIterationStatsVector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStatsVector_swap" "', argument " "1"" of type '" "std::vector< faiss::ClusteringIterationStats > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::ClusteringIterationStats > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ClusteringIterationStatsVector_swap" "', argument " "2"" of type '" "std::vector< faiss::ClusteringIterationStats > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "ClusteringIterationStatsVector_swap" "', argument " "2"" of type '" "std::vector< faiss::ClusteringIterationStats > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::ClusteringIterationStats > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ClusteringIterationStatsVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::ClusteringIterationStats > *arg1 = (std::vector< faiss::ClusteringIterationStats > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ClusteringIterationStatsVector" "', argument " "1"" of type '" "std::vector< faiss::ClusteringIterationStats > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::ClusteringIterationStats > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ClusteringIterationStatsVector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ClusteringIterationStatsVector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_OnDiskOneListVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OnDiskOneList > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_OnDiskOneListVector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< faiss::OnDiskOneList > *)new std::vector< faiss::OnDiskOneList >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskOneListVector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OnDiskOneList > *arg1 = (std::vector< faiss::OnDiskOneList > *) 0 ;
+  faiss::OnDiskOneList arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskOneListVector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskOneListVector_push_back" "', argument " "1"" of type '" "std::vector< faiss::OnDiskOneList > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OnDiskOneList > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__OnDiskOneList,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskOneListVector_push_back" "', argument " "2"" of type '" "faiss::OnDiskOneList""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "OnDiskOneListVector_push_back" "', argument " "2"" of type '" "faiss::OnDiskOneList""'");
+    } else {
+      faiss::OnDiskOneList * temp = reinterpret_cast< faiss::OnDiskOneList * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskOneListVector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OnDiskOneList > *arg1 = (std::vector< faiss::OnDiskOneList > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskOneListVector_clear" "', argument " "1"" of type '" "std::vector< faiss::OnDiskOneList > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OnDiskOneList > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskOneListVector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OnDiskOneList > *arg1 = (std::vector< faiss::OnDiskOneList > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::OnDiskOneList *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskOneListVector_data" "', argument " "1"" of type '" "std::vector< faiss::OnDiskOneList > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OnDiskOneList > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::OnDiskOneList *)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__OnDiskOneList, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskOneListVector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OnDiskOneList > *arg1 = (std::vector< faiss::OnDiskOneList > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskOneListVector_size" "', argument " "1"" of type '" "std::vector< faiss::OnDiskOneList > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OnDiskOneList > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskOneListVector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OnDiskOneList > *arg1 = (std::vector< faiss::OnDiskOneList > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::OnDiskOneList result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskOneListVector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskOneListVector_at" "', argument " "1"" of type '" "std::vector< faiss::OnDiskOneList > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OnDiskOneList > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskOneListVector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((std::vector< faiss::OnDiskOneList > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new faiss::OnDiskOneList(static_cast< const faiss::OnDiskOneList& >(result))), SWIGTYPE_p_faiss__OnDiskOneList, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskOneListVector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OnDiskOneList > *arg1 = (std::vector< faiss::OnDiskOneList > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskOneListVector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskOneListVector_resize" "', argument " "1"" of type '" "std::vector< faiss::OnDiskOneList > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OnDiskOneList > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskOneListVector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskOneListVector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OnDiskOneList > *arg1 = (std::vector< faiss::OnDiskOneList > *) 0 ;
+  std::vector< faiss::OnDiskOneList > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskOneListVector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskOneListVector_swap" "', argument " "1"" of type '" "std::vector< faiss::OnDiskOneList > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OnDiskOneList > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskOneListVector_swap" "', argument " "2"" of type '" "std::vector< faiss::OnDiskOneList > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "OnDiskOneListVector_swap" "', argument " "2"" of type '" "std::vector< faiss::OnDiskOneList > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::OnDiskOneList > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_OnDiskOneListVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::OnDiskOneList > *arg1 = (std::vector< faiss::OnDiskOneList > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_OnDiskOneListVector" "', argument " "1"" of type '" "std::vector< faiss::OnDiskOneList > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::OnDiskOneList > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *OnDiskOneListVector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *OnDiskOneListVector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuResourcesVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_GpuResourcesVector", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (std::vector< faiss::gpu::GpuResourcesProvider * > *)new std::vector< faiss::gpu::GpuResourcesProvider * >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResourcesVector_push_back(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg1 = (std::vector< faiss::gpu::GpuResourcesProvider * > *) 0 ;
+  faiss::gpu::GpuResourcesProvider *arg2 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResourcesVector_push_back", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResourcesVector_push_back" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuResourcesVector_push_back" "', argument " "2"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->push_back(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResourcesVector_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg1 = (std::vector< faiss::gpu::GpuResourcesProvider * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResourcesVector_clear" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResourcesVector_data(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg1 = (std::vector< faiss::gpu::GpuResourcesProvider * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::GpuResourcesProvider **result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResourcesVector_data" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuResourcesProvider **)(arg1)->data();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResourcesVector_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg1 = (std::vector< faiss::gpu::GpuResourcesProvider * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResourcesVector_size" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResourcesVector_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg1 = (std::vector< faiss::gpu::GpuResourcesProvider * > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::gpu::GpuResourcesProvider *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResourcesVector_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResourcesVector_at" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > const *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuResourcesVector_at" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuResourcesProvider *)((std::vector< faiss::gpu::GpuResourcesProvider * > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResourcesVector_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg1 = (std::vector< faiss::gpu::GpuResourcesProvider * > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResourcesVector_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResourcesVector_resize" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuResourcesVector_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResourcesVector_swap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg1 = (std::vector< faiss::gpu::GpuResourcesProvider * > *) 0 ;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResourcesVector_swap", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResourcesVector_swap" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuResourcesVector_swap" "', argument " "2"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "GpuResourcesVector_swap" "', argument " "2"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->swap(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuResourcesVector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg1 = (std::vector< faiss::gpu::GpuResourcesProvider * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuResourcesVector" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > *""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuResourcesVector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuResourcesVector_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_simd_histogram_8(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint16_t *arg1 = (uint16_t *) 0 ;
+  int arg2 ;
+  uint16_t arg3 ;
+  int arg4 ;
+  int *arg5 = (int *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  unsigned short val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "simd_histogram_8", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_short, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "simd_histogram_8" "', argument " "1"" of type '" "uint16_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint16_t * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "simd_histogram_8" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_unsigned_SS_short(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "simd_histogram_8" "', argument " "3"" of type '" "uint16_t""'");
+  } 
+  arg3 = static_cast< uint16_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "simd_histogram_8" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "simd_histogram_8" "', argument " "5"" of type '" "int *""'"); 
+  }
+  arg5 = reinterpret_cast< int * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::simd_histogram_8((unsigned short const *)arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_simd_histogram_16(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint16_t *arg1 = (uint16_t *) 0 ;
+  int arg2 ;
+  uint16_t arg3 ;
+  int arg4 ;
+  int *arg5 = (int *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  unsigned short val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "simd_histogram_16", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_short, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "simd_histogram_16" "', argument " "1"" of type '" "uint16_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint16_t * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "simd_histogram_16" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_unsigned_SS_short(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "simd_histogram_16" "', argument " "3"" of type '" "uint16_t""'");
+  } 
+  arg3 = static_cast< uint16_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "simd_histogram_16" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "simd_histogram_16" "', argument " "5"" of type '" "int *""'"); 
+  }
+  arg5 = reinterpret_cast< int * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::simd_histogram_16((unsigned short const *)arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PartitionStats_bissect_cycles_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PartitionStats *arg1 = (faiss::PartitionStats *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PartitionStats_bissect_cycles_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PartitionStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PartitionStats_bissect_cycles_set" "', argument " "1"" of type '" "faiss::PartitionStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PartitionStats * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PartitionStats_bissect_cycles_set" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  if (arg1) (arg1)->bissect_cycles = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PartitionStats_bissect_cycles_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PartitionStats *arg1 = (faiss::PartitionStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PartitionStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PartitionStats_bissect_cycles_get" "', argument " "1"" of type '" "faiss::PartitionStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PartitionStats * >(argp1);
+  result = (uint64_t) ((arg1)->bissect_cycles);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PartitionStats_compress_cycles_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PartitionStats *arg1 = (faiss::PartitionStats *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PartitionStats_compress_cycles_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PartitionStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PartitionStats_compress_cycles_set" "', argument " "1"" of type '" "faiss::PartitionStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PartitionStats * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PartitionStats_compress_cycles_set" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  if (arg1) (arg1)->compress_cycles = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PartitionStats_compress_cycles_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PartitionStats *arg1 = (faiss::PartitionStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PartitionStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PartitionStats_compress_cycles_get" "', argument " "1"" of type '" "faiss::PartitionStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PartitionStats * >(argp1);
+  result = (uint64_t) ((arg1)->compress_cycles);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PartitionStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PartitionStats *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_PartitionStats", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PartitionStats *)new faiss::PartitionStats();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PartitionStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PartitionStats_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PartitionStats *arg1 = (faiss::PartitionStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PartitionStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PartitionStats_reset" "', argument " "1"" of type '" "faiss::PartitionStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PartitionStats * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_PartitionStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PartitionStats *arg1 = (faiss::PartitionStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PartitionStats, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_PartitionStats" "', argument " "1"" of type '" "faiss::PartitionStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PartitionStats * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *PartitionStats_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__PartitionStats, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *PartitionStats_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN int Swig_var_partition_stats_set(PyObject *_val) {
+  {
+    void *argp = 0;
+    int res = SWIG_ConvertPtr(_val, &argp, SWIGTYPE_p_faiss__PartitionStats,  0  | 0);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::partition_stats""' of type '""faiss::PartitionStats""'");
+    }
+    if (!argp) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in variable '""faiss::partition_stats""' of type '""faiss::PartitionStats""'");
+    } else {
+      faiss::PartitionStats * temp;
+      temp  = reinterpret_cast< faiss::PartitionStats * >(argp);
+      faiss::partition_stats = *temp;
+      if (SWIG_IsNewObj(res)) delete temp;
+    }
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_partition_stats_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_NewPointerObj(SWIG_as_voidptr(&faiss::partition_stats), SWIGTYPE_p_faiss__PartitionStats,  0 );
+  return pyobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_bitvec_print(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "bitvec_print", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "bitvec_print" "', argument " "1"" of type '" "uint8_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "bitvec_print" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::bitvec_print((unsigned char const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvecs2bitvecs(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvecs2bitvecs", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fvecs2bitvecs" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvecs2bitvecs" "', argument " "2"" of type '" "uint8_t *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvecs2bitvecs" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "fvecs2bitvecs" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvecs2bitvecs((float const *)arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_bitvecs2fvecs(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "bitvecs2fvecs", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "bitvecs2fvecs" "', argument " "1"" of type '" "uint8_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "bitvecs2fvecs" "', argument " "2"" of type '" "float *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "bitvecs2fvecs" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "bitvecs2fvecs" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::bitvecs2fvecs((unsigned char const *)arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec2bitvec(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec2bitvec", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fvec2bitvec" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec2bitvec" "', argument " "2"" of type '" "uint8_t *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvec2bitvec" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec2bitvec((float const *)arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_bitvec_shuffle(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  int *arg4 = (int *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  uint8_t *arg6 = (uint8_t *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "bitvec_shuffle", 6, 6, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "bitvec_shuffle" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "bitvec_shuffle" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "bitvec_shuffle" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "bitvec_shuffle" "', argument " "4"" of type '" "int const *""'"); 
+  }
+  arg4 = reinterpret_cast< int * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "bitvec_shuffle" "', argument " "5"" of type '" "uint8_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "bitvec_shuffle" "', argument " "6"" of type '" "uint8_t *""'"); 
+  }
+  arg6 = reinterpret_cast< uint8_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::bitvec_shuffle(arg1,arg2,arg3,(int const *)arg4,(unsigned char const *)arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BitstringWriter_code_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringWriter *arg1 = (faiss::BitstringWriter *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BitstringWriter_code_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringWriter_code_set" "', argument " "1"" of type '" "faiss::BitstringWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringWriter * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "BitstringWriter_code_set" "', argument " "2"" of type '" "uint8_t *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  if (arg1) (arg1)->code = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BitstringWriter_code_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringWriter *arg1 = (faiss::BitstringWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint8_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringWriter_code_get" "', argument " "1"" of type '" "faiss::BitstringWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringWriter * >(argp1);
+  result = (uint8_t *) ((arg1)->code);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BitstringWriter_code_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringWriter *arg1 = (faiss::BitstringWriter *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BitstringWriter_code_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringWriter_code_size_set" "', argument " "1"" of type '" "faiss::BitstringWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringWriter * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BitstringWriter_code_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->code_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BitstringWriter_code_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringWriter *arg1 = (faiss::BitstringWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringWriter_code_size_get" "', argument " "1"" of type '" "faiss::BitstringWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringWriter * >(argp1);
+  result = (size_t) ((arg1)->code_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BitstringWriter_i_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringWriter *arg1 = (faiss::BitstringWriter *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BitstringWriter_i_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringWriter_i_set" "', argument " "1"" of type '" "faiss::BitstringWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringWriter * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BitstringWriter_i_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->i = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BitstringWriter_i_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringWriter *arg1 = (faiss::BitstringWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringWriter_i_get" "', argument " "1"" of type '" "faiss::BitstringWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringWriter * >(argp1);
+  result = (size_t) ((arg1)->i);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_BitstringWriter(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::BitstringWriter *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_BitstringWriter", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_BitstringWriter" "', argument " "1"" of type '" "uint8_t *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_BitstringWriter" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::BitstringWriter *)new faiss::BitstringWriter(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__BitstringWriter, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BitstringWriter_write(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringWriter *arg1 = (faiss::BitstringWriter *) 0 ;
+  uint64_t arg2 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BitstringWriter_write", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringWriter_write" "', argument " "1"" of type '" "faiss::BitstringWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringWriter * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BitstringWriter_write" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "BitstringWriter_write" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->write(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_BitstringWriter(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringWriter *arg1 = (faiss::BitstringWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringWriter, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_BitstringWriter" "', argument " "1"" of type '" "faiss::BitstringWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringWriter * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *BitstringWriter_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__BitstringWriter, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *BitstringWriter_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_BitstringReader_code_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringReader *arg1 = (faiss::BitstringReader *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BitstringReader_code_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringReader_code_set" "', argument " "1"" of type '" "faiss::BitstringReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringReader * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "BitstringReader_code_set" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  if (arg1) (arg1)->code = (uint8_t const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BitstringReader_code_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringReader *arg1 = (faiss::BitstringReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint8_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringReader_code_get" "', argument " "1"" of type '" "faiss::BitstringReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringReader * >(argp1);
+  result = (uint8_t *) ((arg1)->code);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BitstringReader_code_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringReader *arg1 = (faiss::BitstringReader *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BitstringReader_code_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringReader_code_size_set" "', argument " "1"" of type '" "faiss::BitstringReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringReader * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BitstringReader_code_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->code_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BitstringReader_code_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringReader *arg1 = (faiss::BitstringReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringReader_code_size_get" "', argument " "1"" of type '" "faiss::BitstringReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringReader * >(argp1);
+  result = (size_t) ((arg1)->code_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BitstringReader_i_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringReader *arg1 = (faiss::BitstringReader *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BitstringReader_i_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringReader_i_set" "', argument " "1"" of type '" "faiss::BitstringReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringReader * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BitstringReader_i_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->i = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BitstringReader_i_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringReader *arg1 = (faiss::BitstringReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringReader_i_get" "', argument " "1"" of type '" "faiss::BitstringReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringReader * >(argp1);
+  result = (size_t) ((arg1)->i);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_BitstringReader(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::BitstringReader *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_BitstringReader", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_BitstringReader" "', argument " "1"" of type '" "uint8_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_BitstringReader" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::BitstringReader *)new faiss::BitstringReader((uint8_t const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__BitstringReader, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BitstringReader_read(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringReader *arg1 = (faiss::BitstringReader *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BitstringReader_read", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BitstringReader_read" "', argument " "1"" of type '" "faiss::BitstringReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringReader * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BitstringReader_read" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)(arg1)->read(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_BitstringReader(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BitstringReader *arg1 = (faiss::BitstringReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BitstringReader, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_BitstringReader" "', argument " "1"" of type '" "faiss::BitstringReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BitstringReader * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *BitstringReader_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__BitstringReader, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *BitstringReader_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN int Swig_var_hamming_batch_size_set(PyObject *_val) {
+  {
+    size_t val;
+    int res = SWIG_AsVal_size_t(_val, &val);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::hamming_batch_size""' of type '""size_t""'");
+    }
+    faiss::hamming_batch_size = static_cast< size_t >(val);
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_hamming_batch_size_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_From_size_t(static_cast< size_t >(faiss::hamming_batch_size));
+  return pyobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_popcount64(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint64_t arg1 ;
+  unsigned long val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_unsigned_SS_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "popcount64" "', argument " "1"" of type '" "uint64_t""'");
+  } 
+  arg1 = static_cast< uint64_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)faiss::popcount64(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_hammings(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  hamdis_t *arg6 = (hamdis_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "hammings", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "hammings" "', argument " "1"" of type '" "uint8_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "hammings" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "hammings" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "hammings" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "hammings" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "hammings" "', argument " "6"" of type '" "hamdis_t *""'"); 
+  }
+  arg6 = reinterpret_cast< hamdis_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::hammings((unsigned char const *)arg1,(unsigned char const *)arg2,arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_hammings_knn_hc(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::int_maxheap_array_t *arg1 = (faiss::int_maxheap_array_t *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  int arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "hammings_knn_hc", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "hammings_knn_hc" "', argument " "1"" of type '" "faiss::int_maxheap_array_t *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::int_maxheap_array_t * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "hammings_knn_hc" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "hammings_knn_hc" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "hammings_knn_hc" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "hammings_knn_hc" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "hammings_knn_hc" "', argument " "6"" of type '" "int""'");
+  } 
+  arg6 = static_cast< int >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::hammings_knn_hc(arg1,(unsigned char const *)arg2,(unsigned char const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_hammings_knn(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::int_maxheap_array_t *arg1 = (faiss::int_maxheap_array_t *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  int arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "hammings_knn", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "hammings_knn" "', argument " "1"" of type '" "faiss::int_maxheap_array_t *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::int_maxheap_array_t * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "hammings_knn" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "hammings_knn" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "hammings_knn" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "hammings_knn" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "hammings_knn" "', argument " "6"" of type '" "int""'");
+  } 
+  arg6 = static_cast< int >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::hammings_knn(arg1,(unsigned char const *)arg2,(unsigned char const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_hammings_knn_mc(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  size_t arg6 ;
+  int32_t *arg7 = (int32_t *) 0 ;
+  int64_t *arg8 = (int64_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  PyObject *swig_obj[8] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "hammings_knn_mc", 8, 8, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "hammings_knn_mc" "', argument " "1"" of type '" "uint8_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "hammings_knn_mc" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "hammings_knn_mc" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "hammings_knn_mc" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "hammings_knn_mc" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "hammings_knn_mc" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "hammings_knn_mc" "', argument " "7"" of type '" "int32_t *""'"); 
+  }
+  arg7 = reinterpret_cast< int32_t * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "hammings_knn_mc" "', argument " "8"" of type '" "int64_t *""'"); 
+  }
+  arg8 = reinterpret_cast< int64_t * >(argp8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::hammings_knn_mc((unsigned char const *)arg1,(unsigned char const *)arg2,arg3,arg4,arg5,arg6,arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_hamming_range_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  int arg5 ;
+  size_t arg6 ;
+  faiss::RangeSearchResult *arg7 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "hamming_range_search", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "hamming_range_search" "', argument " "1"" of type '" "uint8_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "hamming_range_search" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "hamming_range_search" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "hamming_range_search" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "hamming_range_search" "', argument " "5"" of type '" "int""'");
+  } 
+  arg5 = static_cast< int >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "hamming_range_search" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "hamming_range_search" "', argument " "7"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::RangeSearchResult * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::hamming_range_search((unsigned char const *)arg1,(unsigned char const *)arg2,arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_hamming_count_thres(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  hamdis_t arg5 ;
+  size_t arg6 ;
+  size_t *arg7 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "hamming_count_thres", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "hamming_count_thres" "', argument " "1"" of type '" "uint8_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "hamming_count_thres" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "hamming_count_thres" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "hamming_count_thres" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "hamming_count_thres" "', argument " "5"" of type '" "hamdis_t""'");
+  } 
+  arg5 = static_cast< hamdis_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "hamming_count_thres" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "hamming_count_thres" "', argument " "7"" of type '" "size_t *""'"); 
+  }
+  arg7 = reinterpret_cast< size_t * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::hamming_count_thres((unsigned char const *)arg1,(unsigned char const *)arg2,arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_match_hamming_thres(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  hamdis_t arg5 ;
+  size_t arg6 ;
+  int64_t *arg7 = (int64_t *) 0 ;
+  hamdis_t *arg8 = (hamdis_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  PyObject *swig_obj[8] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "match_hamming_thres", 8, 8, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "match_hamming_thres" "', argument " "1"" of type '" "uint8_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "match_hamming_thres" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "match_hamming_thres" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "match_hamming_thres" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "match_hamming_thres" "', argument " "5"" of type '" "hamdis_t""'");
+  } 
+  arg5 = static_cast< hamdis_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "match_hamming_thres" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "match_hamming_thres" "', argument " "7"" of type '" "int64_t *""'"); 
+  }
+  arg7 = reinterpret_cast< int64_t * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "match_hamming_thres" "', argument " "8"" of type '" "hamdis_t *""'"); 
+  }
+  arg8 = reinterpret_cast< hamdis_t * >(argp8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)faiss::match_hamming_thres((unsigned char const *)arg1,(unsigned char const *)arg2,arg3,arg4,arg5,arg6,arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_crosshamming_count_thres(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  size_t arg2 ;
+  hamdis_t arg3 ;
+  size_t arg4 ;
+  size_t *arg5 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "crosshamming_count_thres", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "crosshamming_count_thres" "', argument " "1"" of type '" "uint8_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "crosshamming_count_thres" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "crosshamming_count_thres" "', argument " "3"" of type '" "hamdis_t""'");
+  } 
+  arg3 = static_cast< hamdis_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "crosshamming_count_thres" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "crosshamming_count_thres" "', argument " "5"" of type '" "size_t *""'"); 
+  }
+  arg5 = reinterpret_cast< size_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::crosshamming_count_thres((unsigned char const *)arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_get_num_gpus(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "get_num_gpus", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)get_num_gpus();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_gpu_profiler_start(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  
+  if (!SWIG_Python_UnpackTuple(args, "gpu_profiler_start", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      gpu_profiler_start();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_gpu_profiler_stop(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  
+  if (!SWIG_Python_UnpackTuple(args, "gpu_profiler_stop", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      gpu_profiler_stop();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_gpu_sync_all_devices(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  
+  if (!SWIG_Python_UnpackTuple(args, "gpu_sync_all_devices", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      gpu_sync_all_devices();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_allocTypeToString(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocType arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "allocTypeToString" "', argument " "1"" of type '" "faiss::gpu::AllocType""'");
+  } 
+  arg1 = static_cast< faiss::gpu::AllocType >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = faiss::gpu::allocTypeToString(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_std_string(static_cast< std::string >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_memorySpaceToString(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::MemorySpace arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "memorySpaceToString" "', argument " "1"" of type '" "faiss::gpu::MemorySpace""'");
+  } 
+  arg1 = static_cast< faiss::gpu::MemorySpace >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = faiss::gpu::memorySpaceToString(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_std_string(static_cast< std::string >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AllocInfo__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocInfo *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::AllocInfo *)new faiss::gpu::AllocInfo();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__AllocInfo, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AllocInfo__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocType arg1 ;
+  int arg2 ;
+  faiss::gpu::MemorySpace arg3 ;
+  hipStream_t arg4 = (hipStream_t) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  faiss::gpu::AllocInfo *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_AllocInfo" "', argument " "1"" of type '" "faiss::gpu::AllocType""'");
+  } 
+  arg1 = static_cast< faiss::gpu::AllocType >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_AllocInfo" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_AllocInfo" "', argument " "3"" of type '" "faiss::gpu::MemorySpace""'");
+  } 
+  arg3 = static_cast< faiss::gpu::MemorySpace >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "new_AllocInfo" "', argument " "4"" of type '" "hipStream_t""'"); 
+  }
+  arg4 = reinterpret_cast< hipStream_t >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::AllocInfo *)new faiss::gpu::AllocInfo(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__AllocInfo, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AllocInfo(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_AllocInfo", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_AllocInfo__SWIG_0(self, argc, argv);
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_ihipStream_t, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_new_AllocInfo__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_AllocInfo'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::AllocInfo::AllocInfo()\n"
+    "    faiss::gpu::AllocInfo::AllocInfo(faiss::gpu::AllocType,int,faiss::gpu::MemorySpace,hipStream_t)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_AllocInfo_toString(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocInfo *arg1 = (faiss::gpu::AllocInfo *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocInfo, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AllocInfo_toString" "', argument " "1"" of type '" "faiss::gpu::AllocInfo const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocInfo * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::AllocInfo const *)arg1)->toString();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_std_string(static_cast< std::string >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AllocInfo_type_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocInfo *arg1 = (faiss::gpu::AllocInfo *) 0 ;
+  faiss::gpu::AllocType arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AllocInfo_type_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocInfo, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AllocInfo_type_set" "', argument " "1"" of type '" "faiss::gpu::AllocInfo *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocInfo * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AllocInfo_type_set" "', argument " "2"" of type '" "faiss::gpu::AllocType""'");
+  } 
+  arg2 = static_cast< faiss::gpu::AllocType >(val2);
+  if (arg1) (arg1)->type = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AllocInfo_type_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocInfo *arg1 = (faiss::gpu::AllocInfo *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::AllocType result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocInfo, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AllocInfo_type_get" "', argument " "1"" of type '" "faiss::gpu::AllocInfo *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocInfo * >(argp1);
+  result = (faiss::gpu::AllocType) ((arg1)->type);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AllocInfo_device_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocInfo *arg1 = (faiss::gpu::AllocInfo *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AllocInfo_device_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocInfo, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AllocInfo_device_set" "', argument " "1"" of type '" "faiss::gpu::AllocInfo *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocInfo * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AllocInfo_device_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->device = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AllocInfo_device_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocInfo *arg1 = (faiss::gpu::AllocInfo *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocInfo, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AllocInfo_device_get" "', argument " "1"" of type '" "faiss::gpu::AllocInfo *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocInfo * >(argp1);
+  result = (int) ((arg1)->device);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AllocInfo_space_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocInfo *arg1 = (faiss::gpu::AllocInfo *) 0 ;
+  faiss::gpu::MemorySpace arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AllocInfo_space_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocInfo, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AllocInfo_space_set" "', argument " "1"" of type '" "faiss::gpu::AllocInfo *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocInfo * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AllocInfo_space_set" "', argument " "2"" of type '" "faiss::gpu::MemorySpace""'");
+  } 
+  arg2 = static_cast< faiss::gpu::MemorySpace >(val2);
+  if (arg1) (arg1)->space = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AllocInfo_space_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocInfo *arg1 = (faiss::gpu::AllocInfo *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::MemorySpace result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocInfo, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AllocInfo_space_get" "', argument " "1"" of type '" "faiss::gpu::AllocInfo *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocInfo * >(argp1);
+  result = (faiss::gpu::MemorySpace) ((arg1)->space);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AllocInfo_stream_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocInfo *arg1 = (faiss::gpu::AllocInfo *) 0 ;
+  hipStream_t arg2 = (hipStream_t) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AllocInfo_stream_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocInfo, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AllocInfo_stream_set" "', argument " "1"" of type '" "faiss::gpu::AllocInfo *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocInfo * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_ihipStream_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AllocInfo_stream_set" "', argument " "2"" of type '" "hipStream_t""'"); 
+  }
+  arg2 = reinterpret_cast< hipStream_t >(argp2);
+  if (arg1) (arg1)->stream = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AllocInfo_stream_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocInfo *arg1 = (faiss::gpu::AllocInfo *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  hipStream_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocInfo, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AllocInfo_stream_get" "', argument " "1"" of type '" "faiss::gpu::AllocInfo *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocInfo * >(argp1);
+  result = (hipStream_t) ((arg1)->stream);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_AllocInfo(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocInfo *arg1 = (faiss::gpu::AllocInfo *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocInfo, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_AllocInfo" "', argument " "1"" of type '" "faiss::gpu::AllocInfo *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocInfo * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *AllocInfo_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__AllocInfo, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *AllocInfo_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_makeDevAlloc(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocType arg1 ;
+  hipStream_t arg2 = (hipStream_t) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::gpu::AllocInfo result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "makeDevAlloc", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "makeDevAlloc" "', argument " "1"" of type '" "faiss::gpu::AllocType""'");
+  } 
+  arg1 = static_cast< faiss::gpu::AllocType >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "makeDevAlloc" "', argument " "2"" of type '" "hipStream_t""'"); 
+  }
+  arg2 = reinterpret_cast< hipStream_t >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = faiss::gpu::makeDevAlloc(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new faiss::gpu::AllocInfo(static_cast< const faiss::gpu::AllocInfo& >(result))), SWIGTYPE_p_faiss__gpu__AllocInfo, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_makeTempAlloc(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocType arg1 ;
+  hipStream_t arg2 = (hipStream_t) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::gpu::AllocInfo result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "makeTempAlloc", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "makeTempAlloc" "', argument " "1"" of type '" "faiss::gpu::AllocType""'");
+  } 
+  arg1 = static_cast< faiss::gpu::AllocType >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "makeTempAlloc" "', argument " "2"" of type '" "hipStream_t""'"); 
+  }
+  arg2 = reinterpret_cast< hipStream_t >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = faiss::gpu::makeTempAlloc(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new faiss::gpu::AllocInfo(static_cast< const faiss::gpu::AllocInfo& >(result))), SWIGTYPE_p_faiss__gpu__AllocInfo, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_makeSpaceAlloc(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocType arg1 ;
+  faiss::gpu::MemorySpace arg2 ;
+  hipStream_t arg3 = (hipStream_t) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::gpu::AllocInfo result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "makeSpaceAlloc", 3, 3, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "makeSpaceAlloc" "', argument " "1"" of type '" "faiss::gpu::AllocType""'");
+  } 
+  arg1 = static_cast< faiss::gpu::AllocType >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "makeSpaceAlloc" "', argument " "2"" of type '" "faiss::gpu::MemorySpace""'");
+  } 
+  arg2 = static_cast< faiss::gpu::MemorySpace >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "makeSpaceAlloc" "', argument " "3"" of type '" "hipStream_t""'"); 
+  }
+  arg3 = reinterpret_cast< hipStream_t >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = faiss::gpu::makeSpaceAlloc(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new faiss::gpu::AllocInfo(static_cast< const faiss::gpu::AllocInfo& >(result))), SWIGTYPE_p_faiss__gpu__AllocInfo, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AllocRequest__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocRequest *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::AllocRequest *)new faiss::gpu::AllocRequest();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__AllocRequest, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AllocRequest__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocInfo *arg1 = 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  faiss::gpu::AllocRequest *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_faiss__gpu__AllocInfo,  0  | 0);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_AllocRequest" "', argument " "1"" of type '" "faiss::gpu::AllocInfo const &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_AllocRequest" "', argument " "1"" of type '" "faiss::gpu::AllocInfo const &""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocInfo * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_AllocRequest" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::AllocRequest *)new faiss::gpu::AllocRequest((faiss::gpu::AllocInfo const &)*arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__AllocRequest, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AllocRequest__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocType arg1 ;
+  int arg2 ;
+  faiss::gpu::MemorySpace arg3 ;
+  hipStream_t arg4 = (hipStream_t) 0 ;
+  size_t arg5 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  faiss::gpu::AllocRequest *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_AllocRequest" "', argument " "1"" of type '" "faiss::gpu::AllocType""'");
+  } 
+  arg1 = static_cast< faiss::gpu::AllocType >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_AllocRequest" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_AllocRequest" "', argument " "3"" of type '" "faiss::gpu::MemorySpace""'");
+  } 
+  arg3 = static_cast< faiss::gpu::MemorySpace >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "new_AllocRequest" "', argument " "4"" of type '" "hipStream_t""'"); 
+  }
+  arg4 = reinterpret_cast< hipStream_t >(argp4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_AllocRequest" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::AllocRequest *)new faiss::gpu::AllocRequest(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__AllocRequest, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AllocRequest(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_AllocRequest", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_AllocRequest__SWIG_0(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_faiss__gpu__AllocInfo, SWIG_POINTER_NO_NULL | 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_AllocRequest__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_ihipStream_t, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_AllocRequest__SWIG_2(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_AllocRequest'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::AllocRequest::AllocRequest()\n"
+    "    faiss::gpu::AllocRequest::AllocRequest(faiss::gpu::AllocInfo const &,size_t)\n"
+    "    faiss::gpu::AllocRequest::AllocRequest(faiss::gpu::AllocType,int,faiss::gpu::MemorySpace,hipStream_t,size_t)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_AllocRequest_toString(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocRequest *arg1 = (faiss::gpu::AllocRequest *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocRequest, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AllocRequest_toString" "', argument " "1"" of type '" "faiss::gpu::AllocRequest const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocRequest * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::AllocRequest const *)arg1)->toString();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_std_string(static_cast< std::string >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AllocRequest_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocRequest *arg1 = (faiss::gpu::AllocRequest *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AllocRequest_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocRequest, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AllocRequest_size_set" "', argument " "1"" of type '" "faiss::gpu::AllocRequest *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocRequest * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AllocRequest_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AllocRequest_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocRequest *arg1 = (faiss::gpu::AllocRequest *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocRequest, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AllocRequest_size_get" "', argument " "1"" of type '" "faiss::gpu::AllocRequest *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocRequest * >(argp1);
+  result = (size_t) ((arg1)->size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_AllocRequest(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::AllocRequest *arg1 = (faiss::gpu::AllocRequest *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__AllocRequest, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_AllocRequest" "', argument " "1"" of type '" "faiss::gpu::AllocRequest *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::AllocRequest * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *AllocRequest_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__AllocRequest, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *AllocRequest_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_delete_GpuResources(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuResources" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (void)arg1; delete smartarg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_initializeForDevice(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResources_initializeForDevice", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_initializeForDevice" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuResources_initializeForDevice" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->initializeForDevice(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_getBlasHandle(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  hipblasHandle_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResources_getBlasHandle", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_getBlasHandle" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuResources_getBlasHandle" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (arg1)->getBlasHandle(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new hipblasHandle_t(static_cast< const hipblasHandle_t& >(result))), SWIGTYPE_p_hipblasHandle_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_getDefaultStream(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  hipStream_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResources_getDefaultStream", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_getDefaultStream" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuResources_getDefaultStream" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (hipStream_t)(arg1)->getDefaultStream(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_setDefaultStream(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  int arg2 ;
+  hipStream_t arg3 = (hipStream_t) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResources_setDefaultStream", 3, 3, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_setDefaultStream" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuResources_setDefaultStream" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuResources_setDefaultStream" "', argument " "3"" of type '" "hipStream_t""'"); 
+  }
+  arg3 = reinterpret_cast< hipStream_t >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setDefaultStream(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_getAlternateStreams(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  SwigValueWrapper< std::vector< ihipStream_t * > > result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResources_getAlternateStreams", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_getAlternateStreams" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuResources_getAlternateStreams" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (arg1)->getAlternateStreams(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< hipStream_t >(static_cast< const std::vector< hipStream_t >& >(result))), SWIGTYPE_p_std__vectorT_ihipStream_t_p_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_allocMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  faiss::gpu::AllocRequest *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  void *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResources_allocMemory", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_allocMemory" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__gpu__AllocRequest,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuResources_allocMemory" "', argument " "2"" of type '" "faiss::gpu::AllocRequest const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "GpuResources_allocMemory" "', argument " "2"" of type '" "faiss::gpu::AllocRequest const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::gpu::AllocRequest * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (void *)(arg1)->allocMemory((faiss::gpu::AllocRequest const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_void, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_deallocMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  int arg2 ;
+  void *arg3 = (void *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int res3 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResources_deallocMemory", 3, 3, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_deallocMemory" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuResources_deallocMemory" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2],SWIG_as_voidptrptr(&arg3), 0, 0);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuResources_deallocMemory" "', argument " "3"" of type '" "void *""'"); 
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->deallocMemory(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_getTempMemoryAvailable(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources const > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources const > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResources_getTempMemoryAvailable", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_getTempMemoryAvailable" "', argument " "1"" of type '" "faiss::gpu::GpuResources const *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr< const faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr< const faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr< const faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuResources_getTempMemoryAvailable" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::gpu::GpuResources const *)arg1)->getTempMemoryAvailable(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_getPinnedMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  PyObject *swig_obj[1] ;
+  SwigValueWrapper< std::pair< void *,unsigned long > > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_getPinnedMemory" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (arg1)->getPinnedMemory();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::pair< void *,size_t >(static_cast< const std::pair< void *,size_t >& >(result))), SWIGTYPE_p_std__pairT_void_p_unsigned_long_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_getAsyncCopyStream(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  hipStream_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResources_getAsyncCopyStream", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_getAsyncCopyStream" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuResources_getAsyncCopyStream" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (hipStream_t)(arg1)->getAsyncCopyStream(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_getBlasHandleCurrentDevice(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  PyObject *swig_obj[1] ;
+  hipblasHandle_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_getBlasHandleCurrentDevice" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (arg1)->getBlasHandleCurrentDevice();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new hipblasHandle_t(static_cast< const hipblasHandle_t& >(result))), SWIGTYPE_p_hipblasHandle_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_getDefaultStreamCurrentDevice(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  PyObject *swig_obj[1] ;
+  hipStream_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_getDefaultStreamCurrentDevice" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (hipStream_t)(arg1)->getDefaultStreamCurrentDevice();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_getTempMemoryAvailableCurrentDevice(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources const > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources const > *smartarg1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_getTempMemoryAvailableCurrentDevice" "', argument " "1"" of type '" "faiss::gpu::GpuResources const *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr< const faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr< const faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr< const faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::gpu::GpuResources const *)arg1)->getTempMemoryAvailableCurrentDevice();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_syncDefaultStream(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuResources_syncDefaultStream", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_syncDefaultStream" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuResources_syncDefaultStream" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->syncDefaultStream(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_syncDefaultStreamCurrentDevice(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_syncDefaultStreamCurrentDevice" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->syncDefaultStreamCurrentDevice();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_getAlternateStreamsCurrentDevice(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  PyObject *swig_obj[1] ;
+  SwigValueWrapper< std::vector< ihipStream_t * > > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_getAlternateStreamsCurrentDevice" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (arg1)->getAlternateStreamsCurrentDevice();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< hipStream_t >(static_cast< const std::vector< hipStream_t >& >(result))), SWIGTYPE_p_std__vectorT_ihipStream_t_p_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResources_getAsyncCopyStreamCurrentDevice(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResources *arg1 = (faiss::gpu::GpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::GpuResources > tempshared1 ;
+  std::shared_ptr< faiss::gpu::GpuResources > *smartarg1 = 0 ;
+  PyObject *swig_obj[1] ;
+  hipStream_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResources_getAsyncCopyStreamCurrentDevice" "', argument " "1"" of type '" "faiss::gpu::GpuResources *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::GpuResources > * >(argp1);
+      arg1 = const_cast< faiss::gpu::GpuResources * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (hipStream_t)(arg1)->getAsyncCopyStreamCurrentDevice();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuResources_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_delete_GpuResourcesProvider(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuResourcesProvider" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuResourcesProvider_getResources(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::shared_ptr< faiss::gpu::GpuResources > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuResourcesProvider_getResources" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (arg1)->getResources();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    std::shared_ptr<  faiss::gpu::GpuResources > *smartresult = result ? new std::shared_ptr<  faiss::gpu::GpuResources >(result) : 0;
+    resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(smartresult), SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, SWIG_POINTER_OWN);
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuResourcesProvider_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_new_StandardGpuResourcesImpl(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_StandardGpuResourcesImpl", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::StandardGpuResourcesImpl *)new faiss::gpu::StandardGpuResourcesImpl();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > *smartresult = result ? new std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl >(result SWIG_NO_NULL_DELETER_SWIG_POINTER_NEW) : 0;
+    resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(smartresult), SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, SWIG_POINTER_NEW | SWIG_POINTER_OWN);
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_StandardGpuResourcesImpl(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_StandardGpuResourcesImpl" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (void)arg1; delete smartarg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_noTempMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_noTempMemory" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->noTempMemory();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_setTempMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResourcesImpl_setTempMemory", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_setTempMemory" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResourcesImpl_setTempMemory" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setTempMemory(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_setPinnedMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResourcesImpl_setPinnedMemory", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_setPinnedMemory" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResourcesImpl_setPinnedMemory" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setPinnedMemory(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_setDefaultStream(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  int arg2 ;
+  hipStream_t arg3 = (hipStream_t) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResourcesImpl_setDefaultStream", 3, 3, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_setDefaultStream" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResourcesImpl_setDefaultStream" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "StandardGpuResourcesImpl_setDefaultStream" "', argument " "3"" of type '" "hipStream_t""'"); 
+  }
+  arg3 = reinterpret_cast< hipStream_t >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setDefaultStream(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_revertDefaultStream(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResourcesImpl_revertDefaultStream", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_revertDefaultStream" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResourcesImpl_revertDefaultStream" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->revertDefaultStream(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_getDefaultStream(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  hipStream_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResourcesImpl_getDefaultStream", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_getDefaultStream" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResourcesImpl_getDefaultStream" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (hipStream_t)(arg1)->getDefaultStream(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_setDefaultNullStreamAllDevices(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_setDefaultNullStreamAllDevices" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setDefaultNullStreamAllDevices();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_setLogMemoryAllocations(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResourcesImpl_setLogMemoryAllocations", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_setLogMemoryAllocations" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResourcesImpl_setLogMemoryAllocations" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setLogMemoryAllocations(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_initializeForDevice(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResourcesImpl_initializeForDevice", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_initializeForDevice" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResourcesImpl_initializeForDevice" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->initializeForDevice(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_getBlasHandle(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  hipblasHandle_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResourcesImpl_getBlasHandle", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_getBlasHandle" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResourcesImpl_getBlasHandle" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (arg1)->getBlasHandle(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new hipblasHandle_t(static_cast< const hipblasHandle_t& >(result))), SWIGTYPE_p_hipblasHandle_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_getAlternateStreams(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  SwigValueWrapper< std::vector< ihipStream_t * > > result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResourcesImpl_getAlternateStreams", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_getAlternateStreams" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResourcesImpl_getAlternateStreams" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (arg1)->getAlternateStreams(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< hipStream_t >(static_cast< const std::vector< hipStream_t >& >(result))), SWIGTYPE_p_std__vectorT_ihipStream_t_p_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_allocMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  faiss::gpu::AllocRequest *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  void *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResourcesImpl_allocMemory", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_allocMemory" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__gpu__AllocRequest,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "StandardGpuResourcesImpl_allocMemory" "', argument " "2"" of type '" "faiss::gpu::AllocRequest const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "StandardGpuResourcesImpl_allocMemory" "', argument " "2"" of type '" "faiss::gpu::AllocRequest const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::gpu::AllocRequest * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (void *)(arg1)->allocMemory((faiss::gpu::AllocRequest const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_void, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_deallocMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  int arg2 ;
+  void *arg3 = (void *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int res3 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResourcesImpl_deallocMemory", 3, 3, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_deallocMemory" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResourcesImpl_deallocMemory" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2],SWIG_as_voidptrptr(&arg3), 0, 0);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "StandardGpuResourcesImpl_deallocMemory" "', argument " "3"" of type '" "void *""'"); 
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->deallocMemory(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_getTempMemoryAvailable(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl const > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl const > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResourcesImpl_getTempMemoryAvailable", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_getTempMemoryAvailable" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl const *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr< const faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr< const faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr< const faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResourcesImpl_getTempMemoryAvailable" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::gpu::StandardGpuResourcesImpl const *)arg1)->getTempMemoryAvailable(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_getMemoryInfo(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl const > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl const > *smartarg1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::map< int,std::map< std::string,std::pair< int,size_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,size_t > > > >,std::less< int >,std::allocator< std::pair< int const,std::map< std::string,std::pair< int,size_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,size_t > > > > > > > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_getMemoryInfo" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl const *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr< const faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr< const faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr< const faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::StandardGpuResourcesImpl const *)arg1)->getMemoryInfo();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = swig::from(static_cast< std::map< int,std::map< std::string,std::pair< int,uint64_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,uint64_t > > > >,std::less< int >,std::allocator< std::pair< int const,std::map< std::string,std::pair< int,uint64_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,uint64_t > > > > > > > >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_getPinnedMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  PyObject *swig_obj[1] ;
+  SwigValueWrapper< std::pair< void *,unsigned long > > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_getPinnedMemory" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (arg1)->getPinnedMemory();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::pair< void *,size_t >(static_cast< const std::pair< void *,size_t >& >(result))), SWIGTYPE_p_std__pairT_void_p_unsigned_long_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResourcesImpl_getAsyncCopyStream(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResourcesImpl *arg1 = (faiss::gpu::StandardGpuResourcesImpl *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > tempshared1 ;
+  std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *smartarg1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  hipStream_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResourcesImpl_getAsyncCopyStream", 2, 2, swig_obj)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0 |  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResourcesImpl_getAsyncCopyStream" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResourcesImpl *""'");
+    }
+    if (newmem & SWIG_CAST_NEW_MEMORY) {
+      tempshared1 = *reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      delete reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >(tempshared1.get());
+    } else {
+      smartarg1 = reinterpret_cast< std::shared_ptr<  faiss::gpu::StandardGpuResourcesImpl > * >(argp1);
+      arg1 = const_cast< faiss::gpu::StandardGpuResourcesImpl * >((smartarg1 ? smartarg1->get() : 0));
+    }
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResourcesImpl_getAsyncCopyStream" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (hipStream_t)(arg1)->getAsyncCopyStream(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *StandardGpuResourcesImpl_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *StandardGpuResourcesImpl_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_StandardGpuResources(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_StandardGpuResources", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::StandardGpuResources *)new faiss::gpu::StandardGpuResources();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__StandardGpuResources, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_StandardGpuResources(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *arg1 = (faiss::gpu::StandardGpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__StandardGpuResources, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_StandardGpuResources" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResources *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::StandardGpuResources * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResources_getResources(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *arg1 = (faiss::gpu::StandardGpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::shared_ptr< faiss::gpu::GpuResources > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__StandardGpuResources, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResources_getResources" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResources *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::StandardGpuResources * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (arg1)->getResources();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    std::shared_ptr<  faiss::gpu::GpuResources > *smartresult = result ? new std::shared_ptr<  faiss::gpu::GpuResources >(result) : 0;
+    resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(smartresult), SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, SWIG_POINTER_OWN);
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResources_noTempMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *arg1 = (faiss::gpu::StandardGpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__StandardGpuResources, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResources_noTempMemory" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResources *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::StandardGpuResources * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->noTempMemory();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResources_setTempMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *arg1 = (faiss::gpu::StandardGpuResources *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResources_setTempMemory", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__StandardGpuResources, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResources_setTempMemory" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResources *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::StandardGpuResources * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResources_setTempMemory" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setTempMemory(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResources_setPinnedMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *arg1 = (faiss::gpu::StandardGpuResources *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResources_setPinnedMemory", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__StandardGpuResources, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResources_setPinnedMemory" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResources *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::StandardGpuResources * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResources_setPinnedMemory" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setPinnedMemory(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResources_setDefaultStream(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *arg1 = (faiss::gpu::StandardGpuResources *) 0 ;
+  int arg2 ;
+  hipStream_t arg3 = (hipStream_t) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResources_setDefaultStream", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__StandardGpuResources, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResources_setDefaultStream" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResources *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::StandardGpuResources * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResources_setDefaultStream" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "StandardGpuResources_setDefaultStream" "', argument " "3"" of type '" "hipStream_t""'"); 
+  }
+  arg3 = reinterpret_cast< hipStream_t >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setDefaultStream(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResources_revertDefaultStream(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *arg1 = (faiss::gpu::StandardGpuResources *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResources_revertDefaultStream", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__StandardGpuResources, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResources_revertDefaultStream" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResources *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::StandardGpuResources * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResources_revertDefaultStream" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->revertDefaultStream(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResources_setDefaultNullStreamAllDevices(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *arg1 = (faiss::gpu::StandardGpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__StandardGpuResources, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResources_setDefaultNullStreamAllDevices" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResources *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::StandardGpuResources * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setDefaultNullStreamAllDevices();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResources_getMemoryInfo(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *arg1 = (faiss::gpu::StandardGpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::map< int,std::map< std::string,std::pair< int,size_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,size_t > > > >,std::less< int >,std::allocator< std::pair< int const,std::map< std::string,std::pair< int,size_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,size_t > > > > > > > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__StandardGpuResources, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResources_getMemoryInfo" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResources const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::StandardGpuResources * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::StandardGpuResources const *)arg1)->getMemoryInfo();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = swig::from(static_cast< std::map< int,std::map< std::string,std::pair< int,uint64_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,uint64_t > > > >,std::less< int >,std::allocator< std::pair< int const,std::map< std::string,std::pair< int,uint64_t >,std::less< std::string >,std::allocator< std::pair< std::string const,std::pair< int,uint64_t > > > > > > > >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResources_getDefaultStream(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *arg1 = (faiss::gpu::StandardGpuResources *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  hipStream_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResources_getDefaultStream", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__StandardGpuResources, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResources_getDefaultStream" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResources *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::StandardGpuResources * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResources_getDefaultStream" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (hipStream_t)(arg1)->getDefaultStream(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResources_getTempMemoryAvailable(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *arg1 = (faiss::gpu::StandardGpuResources *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResources_getTempMemoryAvailable", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__StandardGpuResources, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResources_getTempMemoryAvailable" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResources const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::StandardGpuResources * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResources_getTempMemoryAvailable" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::gpu::StandardGpuResources const *)arg1)->getTempMemoryAvailable(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResources_syncDefaultStreamCurrentDevice(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *arg1 = (faiss::gpu::StandardGpuResources *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__StandardGpuResources, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResources_syncDefaultStreamCurrentDevice" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResources *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::StandardGpuResources * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->syncDefaultStreamCurrentDevice();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StandardGpuResources_setLogMemoryAllocations(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::StandardGpuResources *arg1 = (faiss::gpu::StandardGpuResources *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StandardGpuResources_setLogMemoryAllocations", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__StandardGpuResources, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StandardGpuResources_setLogMemoryAllocations" "', argument " "1"" of type '" "faiss::gpu::StandardGpuResources *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::StandardGpuResources * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StandardGpuResources_setLogMemoryAllocations" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setLogMemoryAllocations(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *StandardGpuResources_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__StandardGpuResources, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *StandardGpuResources_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_cast_integer_to_cudastream_t(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  hipStream_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "cast_integer_to_cudastream_t" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (hipStream_t)cast_integer_to_cudastream_t(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_cast_cudastream_t_to_integer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  hipStream_t arg1 = (hipStream_t) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_ihipStream_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "cast_cudastream_t_to_integer" "', argument " "1"" of type '" "hipStream_t""'"); 
+  }
+  arg1 = reinterpret_cast< hipStream_t >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int64_t)cast_cudastream_t_to_integer(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_get_compile_options(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::string result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "get_compile_options", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = faiss::get_compile_options();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_std_string(static_cast< std::string >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_getmillisecs(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "getmillisecs", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)faiss::getmillisecs();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_get_mem_usage_kb(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "get_mem_usage_kb", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)faiss::get_mem_usage_kb();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_get_cycles(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "get_cycles", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)faiss::get_cycles();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_madd(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  float *arg2 = (float *) 0 ;
+  float arg3 ;
+  float *arg4 = (float *) 0 ;
+  float *arg5 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  float val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_madd", 5, 5, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fvec_madd" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_madd" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_float(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvec_madd" "', argument " "3"" of type '" "float""'");
+  } 
+  arg3 = static_cast< float >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "fvec_madd" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "fvec_madd" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec_madd(arg1,(float const *)arg2,arg3,(float const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_madd_and_argmin(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  float *arg2 = (float *) 0 ;
+  float arg3 ;
+  float *arg4 = (float *) 0 ;
+  float *arg5 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  float val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_madd_and_argmin", 5, 5, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fvec_madd_and_argmin" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_madd_and_argmin" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_float(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvec_madd_and_argmin" "', argument " "3"" of type '" "float""'");
+  } 
+  arg3 = static_cast< float >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "fvec_madd_and_argmin" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "fvec_madd_and_argmin" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)faiss::fvec_madd_and_argmin(arg1,(float const *)arg2,arg3,(float const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_reflection(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "reflection", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "reflection" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "reflection" "', argument " "2"" of type '" "float *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "reflection" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "reflection" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "reflection" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::reflection((float const *)arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_matrix_qr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  float *arg3 = (float *) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "matrix_qr", 3, 3, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "matrix_qr" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "matrix_qr" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "matrix_qr" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::matrix_qr(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ranklist_handle_ties(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int64_t *arg2 = (int64_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ranklist_handle_ties", 3, 3, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "ranklist_handle_ties" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ranklist_handle_ties" "', argument " "2"" of type '" "int64_t *""'"); 
+  }
+  arg2 = reinterpret_cast< int64_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ranklist_handle_ties" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::ranklist_handle_ties(arg1,arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ranklist_intersection_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  int64_t *arg2 = (int64_t *) 0 ;
+  size_t arg3 ;
+  int64_t *arg4 = (int64_t *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ranklist_intersection_size", 4, 4, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "ranklist_intersection_size" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ranklist_intersection_size" "', argument " "2"" of type '" "int64_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< int64_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ranklist_intersection_size" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ranklist_intersection_size" "', argument " "4"" of type '" "int64_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< int64_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)faiss::ranklist_intersection_size(arg1,(long const *)arg2,arg3,(long const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_merge_result_table_with__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  int64_t *arg3 = (int64_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  int64_t *arg5 = (int64_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  bool arg7 ;
+  int64_t arg8 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  bool val7 ;
+  int ecode7 = 0 ;
+  long val8 ;
+  int ecode8 = 0 ;
+  size_t result;
+  
+  if ((nobjs < 8) || (nobjs > 8)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "merge_result_table_with" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "merge_result_table_with" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "merge_result_table_with" "', argument " "3"" of type '" "int64_t *""'"); 
+  }
+  arg3 = reinterpret_cast< int64_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "merge_result_table_with" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "merge_result_table_with" "', argument " "5"" of type '" "int64_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< int64_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "merge_result_table_with" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  ecode7 = SWIG_AsVal_bool(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "merge_result_table_with" "', argument " "7"" of type '" "bool""'");
+  } 
+  arg7 = static_cast< bool >(val7);
+  ecode8 = SWIG_AsVal_long(swig_obj[7], &val8);
+  if (!SWIG_IsOK(ecode8)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode8), "in method '" "merge_result_table_with" "', argument " "8"" of type '" "int64_t""'");
+  } 
+  arg8 = static_cast< int64_t >(val8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)faiss::merge_result_table_with(arg1,arg2,arg3,arg4,(long const *)arg5,(float const *)arg6,arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_merge_result_table_with__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  int64_t *arg3 = (int64_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  int64_t *arg5 = (int64_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  bool arg7 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  bool val7 ;
+  int ecode7 = 0 ;
+  size_t result;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "merge_result_table_with" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "merge_result_table_with" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "merge_result_table_with" "', argument " "3"" of type '" "int64_t *""'"); 
+  }
+  arg3 = reinterpret_cast< int64_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "merge_result_table_with" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "merge_result_table_with" "', argument " "5"" of type '" "int64_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< int64_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "merge_result_table_with" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  ecode7 = SWIG_AsVal_bool(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "merge_result_table_with" "', argument " "7"" of type '" "bool""'");
+  } 
+  arg7 = static_cast< bool >(val7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)faiss::merge_result_table_with(arg1,arg2,arg3,arg4,(long const *)arg5,(float const *)arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_merge_result_table_with__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  int64_t *arg3 = (int64_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  int64_t *arg5 = (int64_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  size_t result;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "merge_result_table_with" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "merge_result_table_with" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "merge_result_table_with" "', argument " "3"" of type '" "int64_t *""'"); 
+  }
+  arg3 = reinterpret_cast< int64_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "merge_result_table_with" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "merge_result_table_with" "', argument " "5"" of type '" "int64_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< int64_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "merge_result_table_with" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)faiss::merge_result_table_with(arg1,arg2,arg3,arg4,(long const *)arg5,(float const *)arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_merge_result_table_with(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[9] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "merge_result_table_with", 0, 8, argv))) SWIG_fail;
+  --argc;
+  if (argc == 6) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_long, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_merge_result_table_with__SWIG_2(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_long, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_bool(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  return _wrap_merge_result_table_with__SWIG_1(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 8) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_long, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_bool(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  {
+                    int res = SWIG_AsVal_long(argv[7], NULL);
+                    _v = SWIG_CheckState(res);
+                  }
+                  if (_v) {
+                    return _wrap_merge_result_table_with__SWIG_0(self, argc, argv);
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'merge_result_table_with'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::merge_result_table_with(size_t,size_t,int64_t *,float *,int64_t const *,float const *,bool,int64_t)\n"
+    "    faiss::merge_result_table_with(size_t,size_t,int64_t *,float *,int64_t const *,float const *,bool)\n"
+    "    faiss::merge_result_table_with(size_t,size_t,int64_t *,float *,int64_t const *,float const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_imbalance_factor__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int64_t *arg3 = (int64_t *) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  double result;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "imbalance_factor" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "imbalance_factor" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "imbalance_factor" "', argument " "3"" of type '" "int64_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< int64_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)faiss::imbalance_factor(arg1,arg2,(long const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_imbalance_factor__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int *arg2 = (int *) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  double result;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "imbalance_factor" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "imbalance_factor" "', argument " "2"" of type '" "int const *""'"); 
+  }
+  arg2 = reinterpret_cast< int * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)faiss::imbalance_factor(arg1,(int const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_imbalance_factor(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "imbalance_factor", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_int, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_imbalance_factor__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_long, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_imbalance_factor__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'imbalance_factor'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::imbalance_factor(int,int,int64_t const *)\n"
+    "    faiss::imbalance_factor(int,int const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_argsort(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  float *arg2 = (float *) 0 ;
+  size_t *arg3 = (size_t *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_argsort", 3, 3, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fvec_argsort" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_argsort" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "fvec_argsort" "', argument " "3"" of type '" "size_t *""'"); 
+  }
+  arg3 = reinterpret_cast< size_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec_argsort(arg1,(float const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_argsort_parallel(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  float *arg2 = (float *) 0 ;
+  size_t *arg3 = (size_t *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_argsort_parallel", 3, 3, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fvec_argsort_parallel" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_argsort_parallel" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "fvec_argsort_parallel" "', argument " "3"" of type '" "size_t *""'"); 
+  }
+  arg3 = reinterpret_cast< size_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec_argsort_parallel(arg1,(float const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ivec_hist(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  int *arg2 = (int *) 0 ;
+  int arg3 ;
+  int *arg4 = (int *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ivec_hist", 4, 4, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "ivec_hist" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ivec_hist" "', argument " "2"" of type '" "int const *""'"); 
+  }
+  arg2 = reinterpret_cast< int * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ivec_hist" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ivec_hist" "', argument " "4"" of type '" "int *""'"); 
+  }
+  arg4 = reinterpret_cast< int * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)faiss::ivec_hist(arg1,(int const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_bincode_hist(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  int *arg4 = (int *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "bincode_hist", 4, 4, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "bincode_hist" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "bincode_hist" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "bincode_hist" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "bincode_hist" "', argument " "4"" of type '" "int *""'"); 
+  }
+  arg4 = reinterpret_cast< int * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::bincode_hist(arg1,arg2,(unsigned char const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ivec_checksum(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  int *arg2 = (int *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ivec_checksum", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "ivec_checksum" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ivec_checksum" "', argument " "2"" of type '" "int const *""'"); 
+  }
+  arg2 = reinterpret_cast< int * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)faiss::ivec_checksum(arg1,(int const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvecs_maybe_subsample__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t *arg2 = (size_t *) 0 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  bool arg5 ;
+  int64_t arg6 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  bool val5 ;
+  int ecode5 = 0 ;
+  long val6 ;
+  int ecode6 = 0 ;
+  float *result = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fvecs_maybe_subsample" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvecs_maybe_subsample" "', argument " "2"" of type '" "size_t *""'"); 
+  }
+  arg2 = reinterpret_cast< size_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvecs_maybe_subsample" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "fvecs_maybe_subsample" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  ecode5 = SWIG_AsVal_bool(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "fvecs_maybe_subsample" "', argument " "5"" of type '" "bool""'");
+  } 
+  arg5 = static_cast< bool >(val5);
+  ecode6 = SWIG_AsVal_long(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "fvecs_maybe_subsample" "', argument " "6"" of type '" "int64_t""'");
+  } 
+  arg6 = static_cast< int64_t >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float *)faiss::fvecs_maybe_subsample(arg1,arg2,arg3,(float const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvecs_maybe_subsample__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t *arg2 = (size_t *) 0 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  bool arg5 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  bool val5 ;
+  int ecode5 = 0 ;
+  float *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fvecs_maybe_subsample" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvecs_maybe_subsample" "', argument " "2"" of type '" "size_t *""'"); 
+  }
+  arg2 = reinterpret_cast< size_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvecs_maybe_subsample" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "fvecs_maybe_subsample" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  ecode5 = SWIG_AsVal_bool(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "fvecs_maybe_subsample" "', argument " "5"" of type '" "bool""'");
+  } 
+  arg5 = static_cast< bool >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float *)faiss::fvecs_maybe_subsample(arg1,arg2,arg3,(float const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvecs_maybe_subsample__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t *arg2 = (size_t *) 0 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  float *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fvecs_maybe_subsample" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvecs_maybe_subsample" "', argument " "2"" of type '" "size_t *""'"); 
+  }
+  arg2 = reinterpret_cast< size_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvecs_maybe_subsample" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "fvecs_maybe_subsample" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float *)faiss::fvecs_maybe_subsample(arg1,arg2,arg3,(float const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvecs_maybe_subsample(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "fvecs_maybe_subsample", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_unsigned_long, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_fvecs_maybe_subsample__SWIG_2(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_unsigned_long, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_bool(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_fvecs_maybe_subsample__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_unsigned_long, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_bool(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_long(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_fvecs_maybe_subsample__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'fvecs_maybe_subsample'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::fvecs_maybe_subsample(size_t,size_t *,size_t,float const *,bool,int64_t)\n"
+    "    faiss::fvecs_maybe_subsample(size_t,size_t *,size_t,float const *,bool)\n"
+    "    faiss::fvecs_maybe_subsample(size_t,size_t *,size_t,float const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_binary_to_real(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "binary_to_real", 3, 3, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "binary_to_real" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "binary_to_real" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "binary_to_real" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::binary_to_real(arg1,(unsigned char const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_real_to_binary(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  float *arg2 = (float *) 0 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "real_to_binary", 3, 3, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "real_to_binary" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "real_to_binary" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "real_to_binary" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::real_to_binary(arg1,(float const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_hash_bytes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  int64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "hash_bytes", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "hash_bytes" "', argument " "1"" of type '" "uint8_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "hash_bytes" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)faiss::hash_bytes((unsigned char const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_check_openmp(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  bool result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "check_openmp", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)faiss::check_openmp();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_L2sqr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  float result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_L2sqr", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fvec_L2sqr" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_L2sqr" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvec_L2sqr" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)faiss::fvec_L2sqr((float const *)arg1,(float const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_inner_product(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  float result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_inner_product", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fvec_inner_product" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_inner_product" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvec_inner_product" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)faiss::fvec_inner_product((float const *)arg1,(float const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_L1(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  float result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_L1", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fvec_L1" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_L1" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvec_L1" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)faiss::fvec_L1((float const *)arg1,(float const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_Linf(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  float result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_Linf", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fvec_Linf" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_Linf" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvec_Linf" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)faiss::fvec_Linf((float const *)arg1,(float const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_pairwise_L2sqr__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  int64_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  int64_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  float *arg6 = (float *) 0 ;
+  int64_t arg7 ;
+  int64_t arg8 ;
+  int64_t arg9 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  long val7 ;
+  int ecode7 = 0 ;
+  long val8 ;
+  int ecode8 = 0 ;
+  long val9 ;
+  int ecode9 = 0 ;
+  
+  if ((nobjs < 9) || (nobjs > 9)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "pairwise_L2sqr" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "pairwise_L2sqr" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "pairwise_L2sqr" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "pairwise_L2sqr" "', argument " "4"" of type '" "int64_t""'");
+  } 
+  arg4 = static_cast< int64_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "pairwise_L2sqr" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "pairwise_L2sqr" "', argument " "6"" of type '" "float *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  ecode7 = SWIG_AsVal_long(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "pairwise_L2sqr" "', argument " "7"" of type '" "int64_t""'");
+  } 
+  arg7 = static_cast< int64_t >(val7);
+  ecode8 = SWIG_AsVal_long(swig_obj[7], &val8);
+  if (!SWIG_IsOK(ecode8)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode8), "in method '" "pairwise_L2sqr" "', argument " "8"" of type '" "int64_t""'");
+  } 
+  arg8 = static_cast< int64_t >(val8);
+  ecode9 = SWIG_AsVal_long(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "pairwise_L2sqr" "', argument " "9"" of type '" "int64_t""'");
+  } 
+  arg9 = static_cast< int64_t >(val9);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::pairwise_L2sqr(arg1,arg2,(float const *)arg3,arg4,(float const *)arg5,arg6,arg7,arg8,arg9);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_pairwise_L2sqr__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  int64_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  int64_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  float *arg6 = (float *) 0 ;
+  int64_t arg7 ;
+  int64_t arg8 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  long val7 ;
+  int ecode7 = 0 ;
+  long val8 ;
+  int ecode8 = 0 ;
+  
+  if ((nobjs < 8) || (nobjs > 8)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "pairwise_L2sqr" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "pairwise_L2sqr" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "pairwise_L2sqr" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "pairwise_L2sqr" "', argument " "4"" of type '" "int64_t""'");
+  } 
+  arg4 = static_cast< int64_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "pairwise_L2sqr" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "pairwise_L2sqr" "', argument " "6"" of type '" "float *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  ecode7 = SWIG_AsVal_long(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "pairwise_L2sqr" "', argument " "7"" of type '" "int64_t""'");
+  } 
+  arg7 = static_cast< int64_t >(val7);
+  ecode8 = SWIG_AsVal_long(swig_obj[7], &val8);
+  if (!SWIG_IsOK(ecode8)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode8), "in method '" "pairwise_L2sqr" "', argument " "8"" of type '" "int64_t""'");
+  } 
+  arg8 = static_cast< int64_t >(val8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::pairwise_L2sqr(arg1,arg2,(float const *)arg3,arg4,(float const *)arg5,arg6,arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_pairwise_L2sqr__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  int64_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  int64_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  float *arg6 = (float *) 0 ;
+  int64_t arg7 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  long val7 ;
+  int ecode7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "pairwise_L2sqr" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "pairwise_L2sqr" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "pairwise_L2sqr" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "pairwise_L2sqr" "', argument " "4"" of type '" "int64_t""'");
+  } 
+  arg4 = static_cast< int64_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "pairwise_L2sqr" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "pairwise_L2sqr" "', argument " "6"" of type '" "float *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  ecode7 = SWIG_AsVal_long(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "pairwise_L2sqr" "', argument " "7"" of type '" "int64_t""'");
+  } 
+  arg7 = static_cast< int64_t >(val7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::pairwise_L2sqr(arg1,arg2,(float const *)arg3,arg4,(float const *)arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_pairwise_L2sqr__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  int64_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  int64_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  float *arg6 = (float *) 0 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "pairwise_L2sqr" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "pairwise_L2sqr" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "pairwise_L2sqr" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "pairwise_L2sqr" "', argument " "4"" of type '" "int64_t""'");
+  } 
+  arg4 = static_cast< int64_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "pairwise_L2sqr" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "pairwise_L2sqr" "', argument " "6"" of type '" "float *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::pairwise_L2sqr(arg1,arg2,(float const *)arg3,arg4,(float const *)arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_pairwise_L2sqr(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[10] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "pairwise_L2sqr", 0, 9, argv))) SWIG_fail;
+  --argc;
+  if (argc == 6) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_pairwise_L2sqr__SWIG_3(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_long(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  return _wrap_pairwise_L2sqr__SWIG_2(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 8) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_long(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  {
+                    int res = SWIG_AsVal_long(argv[7], NULL);
+                    _v = SWIG_CheckState(res);
+                  }
+                  if (_v) {
+                    return _wrap_pairwise_L2sqr__SWIG_1(self, argc, argv);
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 9) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_long(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  {
+                    int res = SWIG_AsVal_long(argv[7], NULL);
+                    _v = SWIG_CheckState(res);
+                  }
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_long(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      return _wrap_pairwise_L2sqr__SWIG_0(self, argc, argv);
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'pairwise_L2sqr'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::pairwise_L2sqr(int64_t,int64_t,float const *,int64_t,float const *,float *,int64_t,int64_t,int64_t)\n"
+    "    faiss::pairwise_L2sqr(int64_t,int64_t,float const *,int64_t,float const *,float *,int64_t,int64_t)\n"
+    "    faiss::pairwise_L2sqr(int64_t,int64_t,float const *,int64_t,float const *,float *,int64_t)\n"
+    "    faiss::pairwise_L2sqr(int64_t,int64_t,float const *,int64_t,float const *,float *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_inner_products_ny(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_inner_products_ny", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fvec_inner_products_ny" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_inner_products_ny" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "fvec_inner_products_ny" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "fvec_inner_products_ny" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "fvec_inner_products_ny" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec_inner_products_ny(arg1,(float const *)arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_L2sqr_ny(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_L2sqr_ny", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fvec_L2sqr_ny" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_L2sqr_ny" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "fvec_L2sqr_ny" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "fvec_L2sqr_ny" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "fvec_L2sqr_ny" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec_L2sqr_ny(arg1,(float const *)arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_norm_L2sqr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  float result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_norm_L2sqr", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fvec_norm_L2sqr" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "fvec_norm_L2sqr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)faiss::fvec_norm_L2sqr((float const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_norms_L2(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_norms_L2", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fvec_norms_L2" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_norms_L2" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvec_norms_L2" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "fvec_norms_L2" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec_norms_L2(arg1,(float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_norms_L2sqr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_norms_L2sqr", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fvec_norms_L2sqr" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_norms_L2sqr" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvec_norms_L2sqr" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "fvec_norms_L2sqr" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec_norms_L2sqr(arg1,(float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_renorm_L2(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_renorm_L2", 3, 3, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fvec_renorm_L2" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "fvec_renorm_L2" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "fvec_renorm_L2" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec_renorm_L2(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_inner_product_to_L2sqr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "inner_product_to_L2sqr", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "inner_product_to_L2sqr" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "inner_product_to_L2sqr" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "inner_product_to_L2sqr" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "inner_product_to_L2sqr" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "inner_product_to_L2sqr" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::inner_product_to_L2sqr(arg1,(float const *)arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_add__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fvec_add" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_add" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "fvec_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "fvec_add" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec_add(arg1,(float const *)arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_add__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  float *arg2 = (float *) 0 ;
+  float arg3 ;
+  float *arg4 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  float val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fvec_add" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_add" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_float(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "fvec_add" "', argument " "3"" of type '" "float""'");
+  } 
+  arg3 = static_cast< float >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "fvec_add" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec_add(arg1,(float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_add(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "fvec_add", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_float, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_fvec_add__SWIG_0(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_float, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_float(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_fvec_add__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'fvec_add'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::fvec_add(size_t,float const *,float const *,float *)\n"
+    "    faiss::fvec_add(size_t,float const *,float,float *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_sub(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_sub", 4, 4, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fvec_sub" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_sub" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "fvec_sub" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "fvec_sub" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec_sub(arg1,(float const *)arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_inner_products_by_idx(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  int64_t *arg4 = (int64_t *) 0 ;
+  size_t arg5 ;
+  size_t arg6 ;
+  size_t arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  size_t val7 ;
+  int ecode7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_inner_products_by_idx", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fvec_inner_products_by_idx" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_inner_products_by_idx" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "fvec_inner_products_by_idx" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "fvec_inner_products_by_idx" "', argument " "4"" of type '" "int64_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< int64_t * >(argp4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "fvec_inner_products_by_idx" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "fvec_inner_products_by_idx" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  ecode7 = SWIG_AsVal_size_t(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "fvec_inner_products_by_idx" "', argument " "7"" of type '" "size_t""'");
+  } 
+  arg7 = static_cast< size_t >(val7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec_inner_products_by_idx(arg1,(float const *)arg2,(float const *)arg3,(long const *)arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fvec_L2sqr_by_idx(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  int64_t *arg4 = (int64_t *) 0 ;
+  size_t arg5 ;
+  size_t arg6 ;
+  size_t arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  size_t val7 ;
+  int ecode7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "fvec_L2sqr_by_idx", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fvec_L2sqr_by_idx" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fvec_L2sqr_by_idx" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "fvec_L2sqr_by_idx" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "fvec_L2sqr_by_idx" "', argument " "4"" of type '" "int64_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< int64_t * >(argp4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "fvec_L2sqr_by_idx" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "fvec_L2sqr_by_idx" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  ecode7 = SWIG_AsVal_size_t(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "fvec_L2sqr_by_idx" "', argument " "7"" of type '" "size_t""'");
+  } 
+  arg7 = static_cast< size_t >(val7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fvec_L2sqr_by_idx(arg1,(float const *)arg2,(float const *)arg3,(long const *)arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_pairwise_indexed_L2sqr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  int64_t *arg4 = (int64_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  int64_t *arg6 = (int64_t *) 0 ;
+  float *arg7 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "pairwise_indexed_L2sqr", 7, 7, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "pairwise_indexed_L2sqr" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "pairwise_indexed_L2sqr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "pairwise_indexed_L2sqr" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "pairwise_indexed_L2sqr" "', argument " "4"" of type '" "int64_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< int64_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "pairwise_indexed_L2sqr" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "pairwise_indexed_L2sqr" "', argument " "6"" of type '" "int64_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< int64_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "pairwise_indexed_L2sqr" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::pairwise_indexed_L2sqr(arg1,arg2,(float const *)arg3,(long const *)arg4,(float const *)arg5,(long const *)arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_pairwise_indexed_inner_product(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  int64_t *arg4 = (int64_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  int64_t *arg6 = (int64_t *) 0 ;
+  float *arg7 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "pairwise_indexed_inner_product", 7, 7, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "pairwise_indexed_inner_product" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "pairwise_indexed_inner_product" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "pairwise_indexed_inner_product" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "pairwise_indexed_inner_product" "', argument " "4"" of type '" "int64_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< int64_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "pairwise_indexed_inner_product" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "pairwise_indexed_inner_product" "', argument " "6"" of type '" "int64_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< int64_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "pairwise_indexed_inner_product" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::pairwise_indexed_inner_product(arg1,arg2,(float const *)arg3,(long const *)arg4,(float const *)arg5,(long const *)arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN int Swig_var_distance_compute_blas_threshold_set(PyObject *_val) {
+  {
+    int val;
+    int res = SWIG_AsVal_int(_val, &val);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::distance_compute_blas_threshold""' of type '""int""'");
+    }
+    faiss::distance_compute_blas_threshold = static_cast< int >(val);
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_distance_compute_blas_threshold_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_From_int(static_cast< int >(faiss::distance_compute_blas_threshold));
+  return pyobj;
+}
+
+
+SWIGINTERN int Swig_var_distance_compute_blas_query_bs_set(PyObject *_val) {
+  {
+    int val;
+    int res = SWIG_AsVal_int(_val, &val);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::distance_compute_blas_query_bs""' of type '""int""'");
+    }
+    faiss::distance_compute_blas_query_bs = static_cast< int >(val);
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_distance_compute_blas_query_bs_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_From_int(static_cast< int >(faiss::distance_compute_blas_query_bs));
+  return pyobj;
+}
+
+
+SWIGINTERN int Swig_var_distance_compute_blas_database_bs_set(PyObject *_val) {
+  {
+    int val;
+    int res = SWIG_AsVal_int(_val, &val);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::distance_compute_blas_database_bs""' of type '""int""'");
+    }
+    faiss::distance_compute_blas_database_bs = static_cast< int >(val);
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_distance_compute_blas_database_bs_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_From_int(static_cast< int >(faiss::distance_compute_blas_database_bs));
+  return pyobj;
+}
+
+
+SWIGINTERN int Swig_var_distance_compute_min_k_reservoir_set(PyObject *_val) {
+  {
+    int val;
+    int res = SWIG_AsVal_int(_val, &val);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::distance_compute_min_k_reservoir""' of type '""int""'");
+    }
+    faiss::distance_compute_min_k_reservoir = static_cast< int >(val);
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_distance_compute_min_k_reservoir_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_From_int(static_cast< int >(faiss::distance_compute_min_k_reservoir));
+  return pyobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_knn_inner_product(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  faiss::float_minheap_array_t *arg6 = (faiss::float_minheap_array_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "knn_inner_product", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "knn_inner_product" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "knn_inner_product" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "knn_inner_product" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "knn_inner_product" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "knn_inner_product" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "knn_inner_product" "', argument " "6"" of type '" "faiss::float_minheap_array_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::float_minheap_array_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::knn_inner_product((float const *)arg1,(float const *)arg2,arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_knn_L2sqr__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  faiss::float_maxheap_array_t *arg6 = (faiss::float_maxheap_array_t *) 0 ;
+  float *arg7 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "knn_L2sqr" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "knn_L2sqr" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "knn_L2sqr" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "knn_L2sqr" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "knn_L2sqr" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "knn_L2sqr" "', argument " "6"" of type '" "faiss::float_maxheap_array_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::float_maxheap_array_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "knn_L2sqr" "', argument " "7"" of type '" "float const *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::knn_L2sqr((float const *)arg1,(float const *)arg2,arg3,arg4,arg5,arg6,(float const *)arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_knn_L2sqr__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  faiss::float_maxheap_array_t *arg6 = (faiss::float_maxheap_array_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "knn_L2sqr" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "knn_L2sqr" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "knn_L2sqr" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "knn_L2sqr" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "knn_L2sqr" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "knn_L2sqr" "', argument " "6"" of type '" "faiss::float_maxheap_array_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::float_maxheap_array_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::knn_L2sqr((float const *)arg1,(float const *)arg2,arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_knn_L2sqr(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "knn_L2sqr", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_float, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_float, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_knn_L2sqr__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_float, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_float, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  return _wrap_knn_L2sqr__SWIG_0(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'knn_L2sqr'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::knn_L2sqr(float const *,float const *,size_t,size_t,size_t,faiss::float_maxheap_array_t *,float const *)\n"
+    "    faiss::knn_L2sqr(float const *,float const *,size_t,size_t,size_t,faiss::float_maxheap_array_t *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_knn_inner_products_by_idx(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  int64_t *arg3 = (int64_t *) 0 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  size_t arg6 ;
+  faiss::float_minheap_array_t *arg7 = (faiss::float_minheap_array_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "knn_inner_products_by_idx", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "knn_inner_products_by_idx" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "knn_inner_products_by_idx" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "knn_inner_products_by_idx" "', argument " "3"" of type '" "int64_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< int64_t * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "knn_inner_products_by_idx" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "knn_inner_products_by_idx" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "knn_inner_products_by_idx" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "knn_inner_products_by_idx" "', argument " "7"" of type '" "faiss::float_minheap_array_t *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::float_minheap_array_t * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::knn_inner_products_by_idx((float const *)arg1,(float const *)arg2,(long const *)arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_knn_L2sqr_by_idx(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  int64_t *arg3 = (int64_t *) 0 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  size_t arg6 ;
+  faiss::float_maxheap_array_t *arg7 = (faiss::float_maxheap_array_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "knn_L2sqr_by_idx", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "knn_L2sqr_by_idx" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "knn_L2sqr_by_idx" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "knn_L2sqr_by_idx" "', argument " "3"" of type '" "int64_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< int64_t * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "knn_L2sqr_by_idx" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "knn_L2sqr_by_idx" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "knn_L2sqr_by_idx" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "knn_L2sqr_by_idx" "', argument " "7"" of type '" "faiss::float_maxheap_array_t *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::float_maxheap_array_t * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::knn_L2sqr_by_idx((float const *)arg1,(float const *)arg2,(long const *)arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_range_search_L2sqr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  float arg6 ;
+  faiss::RangeSearchResult *arg7 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  float val6 ;
+  int ecode6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "range_search_L2sqr", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "range_search_L2sqr" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "range_search_L2sqr" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "range_search_L2sqr" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "range_search_L2sqr" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "range_search_L2sqr" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_float(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "range_search_L2sqr" "', argument " "6"" of type '" "float""'");
+  } 
+  arg6 = static_cast< float >(val6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "range_search_L2sqr" "', argument " "7"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::RangeSearchResult * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::range_search_L2sqr((float const *)arg1,(float const *)arg2,arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_range_search_inner_product(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  float arg6 ;
+  faiss::RangeSearchResult *arg7 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  float val6 ;
+  int ecode6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "range_search_inner_product", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "range_search_inner_product" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "range_search_inner_product" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "range_search_inner_product" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "range_search_inner_product" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "range_search_inner_product" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_float(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "range_search_inner_product" "', argument " "6"" of type '" "float""'");
+  } 
+  arg6 = static_cast< float >(val6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "range_search_inner_product" "', argument " "7"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::RangeSearchResult * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::range_search_inner_product((float const *)arg1,(float const *)arg2,arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_compute_PQ_dis_tables_dsub2(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  bool arg6 ;
+  float *arg7 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  bool val6 ;
+  int ecode6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "compute_PQ_dis_tables_dsub2", 7, 7, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "compute_PQ_dis_tables_dsub2" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "compute_PQ_dis_tables_dsub2" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "compute_PQ_dis_tables_dsub2" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "compute_PQ_dis_tables_dsub2" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "compute_PQ_dis_tables_dsub2" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  ecode6 = SWIG_AsVal_bool(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "compute_PQ_dis_tables_dsub2" "', argument " "6"" of type '" "bool""'");
+  } 
+  arg6 = static_cast< bool >(val6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "compute_PQ_dis_tables_dsub2" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::compute_PQ_dis_tables_dsub2(arg1,arg2,(float const *)arg3,arg4,(float const *)arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RandomGenerator_mt_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RandomGenerator *arg1 = (faiss::RandomGenerator *) 0 ;
+  std::mt19937 arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RandomGenerator_mt_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RandomGenerator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RandomGenerator_mt_set" "', argument " "1"" of type '" "faiss::RandomGenerator *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RandomGenerator * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__mt19937,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "RandomGenerator_mt_set" "', argument " "2"" of type '" "std::mt19937""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "RandomGenerator_mt_set" "', argument " "2"" of type '" "std::mt19937""'");
+    } else {
+      std::mt19937 * temp = reinterpret_cast< std::mt19937 * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  if (arg1) (arg1)->mt = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RandomGenerator_mt_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RandomGenerator *arg1 = (faiss::RandomGenerator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::mt19937 result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RandomGenerator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RandomGenerator_mt_get" "', argument " "1"" of type '" "faiss::RandomGenerator *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RandomGenerator * >(argp1);
+  result =  ((arg1)->mt);
+  resultobj = SWIG_NewPointerObj((new std::mt19937(static_cast< const std::mt19937& >(result))), SWIGTYPE_p_std__mt19937, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RandomGenerator_rand_int__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::RandomGenerator *arg1 = (faiss::RandomGenerator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int result;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RandomGenerator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RandomGenerator_rand_int" "', argument " "1"" of type '" "faiss::RandomGenerator *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RandomGenerator * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)(arg1)->rand_int();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RandomGenerator_rand_int64(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RandomGenerator *arg1 = (faiss::RandomGenerator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RandomGenerator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RandomGenerator_rand_int64" "', argument " "1"" of type '" "faiss::RandomGenerator *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RandomGenerator * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int64_t)(arg1)->rand_int64();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RandomGenerator_rand_int__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::RandomGenerator *arg1 = (faiss::RandomGenerator *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int result;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RandomGenerator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RandomGenerator_rand_int" "', argument " "1"" of type '" "faiss::RandomGenerator *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RandomGenerator * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RandomGenerator_rand_int" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)(arg1)->rand_int(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RandomGenerator_rand_int(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "RandomGenerator_rand_int", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__RandomGenerator, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_RandomGenerator_rand_int__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__RandomGenerator, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_RandomGenerator_rand_int__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'RandomGenerator_rand_int'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::RandomGenerator::rand_int()\n"
+    "    faiss::RandomGenerator::rand_int(int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_RandomGenerator_rand_float(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RandomGenerator *arg1 = (faiss::RandomGenerator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RandomGenerator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RandomGenerator_rand_float" "', argument " "1"" of type '" "faiss::RandomGenerator *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RandomGenerator * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)(arg1)->rand_float();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RandomGenerator_rand_double(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RandomGenerator *arg1 = (faiss::RandomGenerator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RandomGenerator, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RandomGenerator_rand_double" "', argument " "1"" of type '" "faiss::RandomGenerator *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RandomGenerator * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)(arg1)->rand_double();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RandomGenerator__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  faiss::RandomGenerator *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_RandomGenerator" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::RandomGenerator *)new faiss::RandomGenerator(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RandomGenerator, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RandomGenerator__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::RandomGenerator *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::RandomGenerator *)new faiss::RandomGenerator();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RandomGenerator, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RandomGenerator(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_RandomGenerator", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_RandomGenerator__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_RandomGenerator__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_RandomGenerator'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::RandomGenerator::RandomGenerator(int64_t)\n"
+    "    faiss::RandomGenerator::RandomGenerator()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_RandomGenerator(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RandomGenerator *arg1 = (faiss::RandomGenerator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RandomGenerator, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_RandomGenerator" "', argument " "1"" of type '" "faiss::RandomGenerator *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RandomGenerator * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *RandomGenerator_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__RandomGenerator, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *RandomGenerator_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_float_rand(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  size_t arg2 ;
+  int64_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_rand", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_rand" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_rand" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "float_rand" "', argument " "3"" of type '" "int64_t""'");
+  } 
+  arg3 = static_cast< int64_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::float_rand(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_randn(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  size_t arg2 ;
+  int64_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_randn", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_randn" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_randn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "float_randn" "', argument " "3"" of type '" "int64_t""'");
+  } 
+  arg3 = static_cast< int64_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::float_randn(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int64_rand(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int64_t *arg1 = (int64_t *) 0 ;
+  size_t arg2 ;
+  int64_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int64_rand", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int64_rand" "', argument " "1"" of type '" "int64_t *""'"); 
+  }
+  arg1 = reinterpret_cast< int64_t * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int64_rand" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "int64_rand" "', argument " "3"" of type '" "int64_t""'");
+  } 
+  arg3 = static_cast< int64_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::int64_rand(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_byte_rand(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  size_t arg2 ;
+  int64_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "byte_rand", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "byte_rand" "', argument " "1"" of type '" "uint8_t *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "byte_rand" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "byte_rand" "', argument " "3"" of type '" "int64_t""'");
+  } 
+  arg3 = static_cast< int64_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::byte_rand(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int64_rand_max(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int64_t *arg1 = (int64_t *) 0 ;
+  size_t arg2 ;
+  uint64_t arg3 ;
+  int64_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  unsigned long val3 ;
+  int ecode3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int64_rand_max", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int64_rand_max" "', argument " "1"" of type '" "int64_t *""'"); 
+  }
+  arg1 = reinterpret_cast< int64_t * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int64_rand_max" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_unsigned_SS_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "int64_rand_max" "', argument " "3"" of type '" "uint64_t""'");
+  } 
+  arg3 = static_cast< uint64_t >(val3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "int64_rand_max" "', argument " "4"" of type '" "int64_t""'");
+  } 
+  arg4 = static_cast< int64_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::int64_rand_max(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_rand_perm(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int *arg1 = (int *) 0 ;
+  size_t arg2 ;
+  int64_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "rand_perm", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "rand_perm" "', argument " "1"" of type '" "int *""'"); 
+  }
+  arg1 = reinterpret_cast< int * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "rand_perm" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "rand_perm" "', argument " "3"" of type '" "int64_t""'");
+  } 
+  arg3 = static_cast< int64_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::rand_perm(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_d_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_d_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_d_set" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_d_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->d = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_d_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_d_get" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  result = (int) ((arg1)->d);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_ntotal_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_ntotal_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_ntotal_set" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_ntotal_set" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  if (arg1) (arg1)->ntotal = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_ntotal_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_ntotal_get" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  result = (faiss::Index::idx_t) ((arg1)->ntotal);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_verbose_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_verbose_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_verbose_set" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_verbose_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->verbose = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_verbose_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_verbose_get" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  result = (bool) ((arg1)->verbose);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_is_trained_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_is_trained_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_is_trained_set" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_is_trained_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->is_trained = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_is_trained_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_is_trained_get" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  result = (bool) ((arg1)->is_trained);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_metric_type_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::MetricType arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_metric_type_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_metric_type_set" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_metric_type_set" "', argument " "2"" of type '" "faiss::MetricType""'");
+  } 
+  arg2 = static_cast< faiss::MetricType >(val2);
+  if (arg1) (arg1)->metric_type = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_metric_type_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::MetricType result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_metric_type_get" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  result = (faiss::MetricType) ((arg1)->metric_type);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_metric_arg_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_metric_arg_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_metric_arg_set" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_metric_arg_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->metric_arg = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_metric_arg_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_metric_arg_get" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  result = (float) ((arg1)->metric_arg);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Index(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Index" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_train" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_add" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_add_with_ids" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_add_with_ids" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index_add_with_ids" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "Index_add_with_ids" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_search" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "Index_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "Index_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "Index_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_range_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_range_search", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_range_search" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_range_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index_range_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_float(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "Index_range_search" "', argument " "4"" of type '" "float""'");
+  } 
+  arg4 = static_cast< float >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "Index_range_search" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index const *)arg1)->range_search(arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_assign__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  faiss::Index::idx_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_assign" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_assign" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index_assign" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "Index_assign" "', argument " "4"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "Index_assign" "', argument " "5"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg5 = static_cast< faiss::Index::idx_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index const *)arg1)->assign(arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_assign__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_assign" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_assign" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index_assign" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "Index_assign" "', argument " "4"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index const *)arg1)->assign(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_assign(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "Index_assign", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_Index_assign__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_Index_assign__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'Index_assign'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::Index::assign(faiss::Index::idx_t,float const *,faiss::Index::idx_t *,faiss::Index::idx_t) const\n"
+    "    faiss::Index::assign(faiss::Index::idx_t,float const *,faiss::Index::idx_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_reset" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_remove_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_remove_ids" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Index_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Index_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_reconstruct" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index_reconstruct" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_reconstruct_n(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  faiss::Index::idx_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_reconstruct_n", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_reconstruct_n" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_reconstruct_n" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "Index_reconstruct_n" "', argument " "3"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::Index::idx_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "Index_reconstruct_n" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index const *)arg1)->reconstruct_n(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_search_and_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  float *arg7 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_search_and_reconstruct", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_search_and_reconstruct" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_search_and_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index_search_and_reconstruct" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "Index_search_and_reconstruct" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "Index_search_and_reconstruct" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "Index_search_and_reconstruct" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "Index_search_and_reconstruct" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index const *)arg1)->search_and_reconstruct(arg2,(float const *)arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_compute_residual(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_compute_residual", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_compute_residual" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Index_compute_residual" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index_compute_residual" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "Index_compute_residual" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index const *)arg1)->compute_residual((float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_compute_residual_n(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_compute_residual_n", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_compute_residual_n" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_compute_residual_n" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index_compute_residual_n" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "Index_compute_residual_n" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "Index_compute_residual_n" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index const *)arg1)->compute_residual_n(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_get_distance_computer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DistanceComputer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_get_distance_computer" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::DistanceComputer *)((faiss::Index const *)arg1)->get_distance_computer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DistanceComputer, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_sa_code_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_sa_code_size" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::Index const *)arg1)->sa_code_size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_sa_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_sa_encode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_sa_encode" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_sa_encode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index_sa_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "Index_sa_encode" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index const *)arg1)->sa_encode(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index_sa_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index_sa_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index_sa_decode" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index_sa_decode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index_sa_decode" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "Index_sa_decode" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index const *)arg1)->sa_decode(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Index_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__Index, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_IndexFlatCodes_code_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatCodes *arg1 = (faiss::IndexFlatCodes *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlatCodes_code_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlatCodes, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlatCodes_code_size_set" "', argument " "1"" of type '" "faiss::IndexFlatCodes *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlatCodes * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexFlatCodes_code_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->code_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlatCodes_code_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatCodes *arg1 = (faiss::IndexFlatCodes *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlatCodes, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlatCodes_code_size_get" "', argument " "1"" of type '" "faiss::IndexFlatCodes *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlatCodes * >(argp1);
+  result = (size_t) ((arg1)->code_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlatCodes_codes_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatCodes *arg1 = (faiss::IndexFlatCodes *) 0 ;
+  std::vector< uint8_t > *arg2 = (std::vector< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlatCodes_codes_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlatCodes, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlatCodes_codes_set" "', argument " "1"" of type '" "faiss::IndexFlatCodes *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlatCodes * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexFlatCodes_codes_set" "', argument " "2"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< uint8_t > * >(argp2);
+  if (arg1) (arg1)->codes = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlatCodes_codes_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatCodes *arg1 = (faiss::IndexFlatCodes *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< uint8_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlatCodes, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlatCodes_codes_get" "', argument " "1"" of type '" "faiss::IndexFlatCodes *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlatCodes * >(argp1);
+  result = (std::vector< uint8_t > *)& ((arg1)->codes);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlatCodes_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatCodes *arg1 = (faiss::IndexFlatCodes *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlatCodes_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlatCodes, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlatCodes_add" "', argument " "1"" of type '" "faiss::IndexFlatCodes *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlatCodes * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexFlatCodes_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexFlatCodes_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlatCodes_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatCodes *arg1 = (faiss::IndexFlatCodes *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlatCodes, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlatCodes_reset" "', argument " "1"" of type '" "faiss::IndexFlatCodes *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlatCodes * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlatCodes_reconstruct_n(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatCodes *arg1 = (faiss::IndexFlatCodes *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  faiss::Index::idx_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlatCodes_reconstruct_n", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlatCodes, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlatCodes_reconstruct_n" "', argument " "1"" of type '" "faiss::IndexFlatCodes const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlatCodes * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexFlatCodes_reconstruct_n" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexFlatCodes_reconstruct_n" "', argument " "3"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::Index::idx_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexFlatCodes_reconstruct_n" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexFlatCodes const *)arg1)->reconstruct_n(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlatCodes_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatCodes *arg1 = (faiss::IndexFlatCodes *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlatCodes_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlatCodes, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlatCodes_reconstruct" "', argument " "1"" of type '" "faiss::IndexFlatCodes const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlatCodes * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexFlatCodes_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexFlatCodes_reconstruct" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexFlatCodes const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlatCodes_sa_code_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatCodes *arg1 = (faiss::IndexFlatCodes *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlatCodes, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlatCodes_sa_code_size" "', argument " "1"" of type '" "faiss::IndexFlatCodes const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlatCodes * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::IndexFlatCodes const *)arg1)->sa_code_size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlatCodes_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatCodes *arg1 = (faiss::IndexFlatCodes *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlatCodes_remove_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlatCodes, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlatCodes_remove_ids" "', argument " "1"" of type '" "faiss::IndexFlatCodes *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlatCodes * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexFlatCodes_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexFlatCodes_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexFlatCodes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatCodes *arg1 = (faiss::IndexFlatCodes *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlatCodes, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexFlatCodes" "', argument " "1"" of type '" "faiss::IndexFlatCodes *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlatCodes * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexFlatCodes_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexFlatCodes, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexFlat__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  faiss::MetricType arg2 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexFlat *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexFlat" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexFlat" "', argument " "2"" of type '" "faiss::MetricType""'");
+  } 
+  arg2 = static_cast< faiss::MetricType >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexFlat *)new faiss::IndexFlat(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexFlat__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexFlat *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexFlat" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexFlat *)new faiss::IndexFlat(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat *arg1 = (faiss::IndexFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlat_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat_search" "', argument " "1"" of type '" "faiss::IndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexFlat_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexFlat_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexFlat_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexFlat_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexFlat_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexFlat const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat_range_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat *arg1 = (faiss::IndexFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlat_range_search", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat_range_search" "', argument " "1"" of type '" "faiss::IndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexFlat_range_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexFlat_range_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_float(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexFlat_range_search" "', argument " "4"" of type '" "float""'");
+  } 
+  arg4 = static_cast< float >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexFlat_range_search" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexFlat const *)arg1)->range_search(arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat *arg1 = (faiss::IndexFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlat_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat_reconstruct" "', argument " "1"" of type '" "faiss::IndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexFlat_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexFlat_reconstruct" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexFlat const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat_compute_distance_subset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat *arg1 = (faiss::IndexFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlat_compute_distance_subset", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat_compute_distance_subset" "', argument " "1"" of type '" "faiss::IndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexFlat_compute_distance_subset" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexFlat_compute_distance_subset" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexFlat_compute_distance_subset" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexFlat_compute_distance_subset" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexFlat_compute_distance_subset" "', argument " "6"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexFlat const *)arg1)->compute_distance_subset(arg2,(float const *)arg3,arg4,arg5,(faiss::Index::idx_t const *)arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat_get_xb__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat *arg1 = (faiss::IndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat_get_xb" "', argument " "1"" of type '" "faiss::IndexFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float *)(arg1)->get_xb();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat_get_xb__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat *arg1 = (faiss::IndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat_get_xb" "', argument " "1"" of type '" "faiss::IndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float *)((faiss::IndexFlat const *)arg1)->get_xb();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat_get_xb(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexFlat_get_xb", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexFlat, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_IndexFlat_get_xb__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexFlat, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_IndexFlat_get_xb__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexFlat_get_xb'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexFlat::get_xb()\n"
+    "    faiss::IndexFlat::get_xb() const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexFlat__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexFlat *)new faiss::IndexFlat();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexFlat(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexFlat", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexFlat__SWIG_2(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexFlat__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexFlat__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexFlat'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexFlat::IndexFlat(faiss::Index::idx_t,faiss::MetricType)\n"
+    "    faiss::IndexFlat::IndexFlat(faiss::Index::idx_t)\n"
+    "    faiss::IndexFlat::IndexFlat()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat_get_distance_computer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat *arg1 = (faiss::IndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DistanceComputer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat_get_distance_computer" "', argument " "1"" of type '" "faiss::IndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::DistanceComputer *)((faiss::IndexFlat const *)arg1)->get_distance_computer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DistanceComputer, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat_sa_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat *arg1 = (faiss::IndexFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlat_sa_encode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat_sa_encode" "', argument " "1"" of type '" "faiss::IndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexFlat_sa_encode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexFlat_sa_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexFlat_sa_encode" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexFlat const *)arg1)->sa_encode(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat_sa_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat *arg1 = (faiss::IndexFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlat_sa_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat_sa_decode" "', argument " "1"" of type '" "faiss::IndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexFlat_sa_decode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexFlat_sa_decode" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexFlat_sa_decode" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexFlat const *)arg1)->sa_decode(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexFlat(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat *arg1 = (faiss::IndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexFlat" "', argument " "1"" of type '" "faiss::IndexFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexFlat_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexFlat, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexFlat_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexFlatIP__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexFlatIP *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexFlatIP" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexFlatIP *)new faiss::IndexFlatIP(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexFlatIP, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexFlatIP__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatIP *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexFlatIP *)new faiss::IndexFlatIP();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexFlatIP, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexFlatIP(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexFlatIP", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexFlatIP__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexFlatIP__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexFlatIP'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexFlatIP::IndexFlatIP(faiss::Index::idx_t)\n"
+    "    faiss::IndexFlatIP::IndexFlatIP()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexFlatIP(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatIP *arg1 = (faiss::IndexFlatIP *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlatIP, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexFlatIP" "', argument " "1"" of type '" "faiss::IndexFlatIP *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlatIP * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexFlatIP_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexFlatIP, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexFlatIP_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexFlatL2__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexFlatL2 *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexFlatL2" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexFlatL2 *)new faiss::IndexFlatL2(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexFlatL2, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexFlatL2__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatL2 *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexFlatL2 *)new faiss::IndexFlatL2();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexFlatL2, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexFlatL2(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexFlatL2", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexFlatL2__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexFlatL2__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexFlatL2'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexFlatL2::IndexFlatL2(faiss::Index::idx_t)\n"
+    "    faiss::IndexFlatL2::IndexFlatL2()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexFlatL2(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlatL2 *arg1 = (faiss::IndexFlatL2 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlatL2, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexFlatL2" "', argument " "1"" of type '" "faiss::IndexFlatL2 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlatL2 * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexFlatL2_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexFlatL2, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexFlatL2_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexFlat1D_continuous_update_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat1D *arg1 = (faiss::IndexFlat1D *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlat1D_continuous_update_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat1D, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat1D_continuous_update_set" "', argument " "1"" of type '" "faiss::IndexFlat1D *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat1D * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexFlat1D_continuous_update_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->continuous_update = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat1D_continuous_update_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat1D *arg1 = (faiss::IndexFlat1D *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat1D, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat1D_continuous_update_get" "', argument " "1"" of type '" "faiss::IndexFlat1D *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat1D * >(argp1);
+  result = (bool) ((arg1)->continuous_update);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat1D_perm_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat1D *arg1 = (faiss::IndexFlat1D *) 0 ;
+  std::vector< faiss::Index::idx_t > *arg2 = (std::vector< faiss::Index::idx_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlat1D_perm_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat1D, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat1D_perm_set" "', argument " "1"" of type '" "faiss::IndexFlat1D *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat1D * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexFlat1D_perm_set" "', argument " "2"" of type '" "std::vector< faiss::Index::idx_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::Index::idx_t > * >(argp2);
+  if (arg1) (arg1)->perm = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat1D_perm_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat1D *arg1 = (faiss::IndexFlat1D *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::Index::idx_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat1D, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat1D_perm_get" "', argument " "1"" of type '" "faiss::IndexFlat1D *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat1D * >(argp1);
+  result = (std::vector< faiss::Index::idx_t > *)& ((arg1)->perm);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexFlat1D__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  bool arg1 ;
+  bool val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexFlat1D *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_bool(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexFlat1D" "', argument " "1"" of type '" "bool""'");
+  } 
+  arg1 = static_cast< bool >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexFlat1D *)new faiss::IndexFlat1D(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexFlat1D, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexFlat1D__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat1D *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexFlat1D *)new faiss::IndexFlat1D();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexFlat1D, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexFlat1D(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexFlat1D", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexFlat1D__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_bool(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexFlat1D__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexFlat1D'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexFlat1D::IndexFlat1D(bool)\n"
+    "    faiss::IndexFlat1D::IndexFlat1D()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat1D_update_permutation(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat1D *arg1 = (faiss::IndexFlat1D *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat1D, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat1D_update_permutation" "', argument " "1"" of type '" "faiss::IndexFlat1D *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat1D * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->update_permutation();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat1D_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat1D *arg1 = (faiss::IndexFlat1D *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlat1D_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat1D, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat1D_add" "', argument " "1"" of type '" "faiss::IndexFlat1D *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat1D * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexFlat1D_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexFlat1D_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat1D_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat1D *arg1 = (faiss::IndexFlat1D *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat1D, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat1D_reset" "', argument " "1"" of type '" "faiss::IndexFlat1D *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat1D * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexFlat1D_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat1D *arg1 = (faiss::IndexFlat1D *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexFlat1D_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat1D, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexFlat1D_search" "', argument " "1"" of type '" "faiss::IndexFlat1D const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat1D * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexFlat1D_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexFlat1D_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexFlat1D_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexFlat1D_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexFlat1D_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexFlat1D const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexFlat1D(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexFlat1D *arg1 = (faiss::IndexFlat1D *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexFlat1D, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexFlat1D" "', argument " "1"" of type '" "faiss::IndexFlat1D *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexFlat1D * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexFlat1D_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexFlat1D, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexFlat1D_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_niter_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringParameters_niter_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_niter_set" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringParameters_niter_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->niter = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_niter_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_niter_get" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  result = (int) ((arg1)->niter);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_nredo_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringParameters_nredo_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_nredo_set" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringParameters_nredo_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nredo = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_nredo_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_nredo_get" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  result = (int) ((arg1)->nredo);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_verbose_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringParameters_verbose_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_verbose_set" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringParameters_verbose_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->verbose = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_verbose_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_verbose_get" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  result = (bool) ((arg1)->verbose);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_spherical_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringParameters_spherical_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_spherical_set" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringParameters_spherical_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->spherical = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_spherical_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_spherical_get" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  result = (bool) ((arg1)->spherical);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_int_centroids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringParameters_int_centroids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_int_centroids_set" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringParameters_int_centroids_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->int_centroids = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_int_centroids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_int_centroids_get" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  result = (bool) ((arg1)->int_centroids);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_update_index_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringParameters_update_index_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_update_index_set" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringParameters_update_index_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->update_index = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_update_index_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_update_index_get" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  result = (bool) ((arg1)->update_index);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_frozen_centroids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringParameters_frozen_centroids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_frozen_centroids_set" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringParameters_frozen_centroids_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->frozen_centroids = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_frozen_centroids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_frozen_centroids_get" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  result = (bool) ((arg1)->frozen_centroids);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_min_points_per_centroid_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringParameters_min_points_per_centroid_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_min_points_per_centroid_set" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringParameters_min_points_per_centroid_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->min_points_per_centroid = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_min_points_per_centroid_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_min_points_per_centroid_get" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  result = (int) ((arg1)->min_points_per_centroid);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_max_points_per_centroid_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringParameters_max_points_per_centroid_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_max_points_per_centroid_set" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringParameters_max_points_per_centroid_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->max_points_per_centroid = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_max_points_per_centroid_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_max_points_per_centroid_get" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  result = (int) ((arg1)->max_points_per_centroid);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_seed_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringParameters_seed_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_seed_set" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringParameters_seed_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->seed = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_seed_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_seed_get" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  result = (int) ((arg1)->seed);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_decode_block_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringParameters_decode_block_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_decode_block_size_set" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringParameters_decode_block_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->decode_block_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringParameters_decode_block_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringParameters_decode_block_size_get" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  result = (size_t) ((arg1)->decode_block_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ClusteringParameters(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ClusteringParameters", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ClusteringParameters *)new faiss::ClusteringParameters();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ClusteringParameters, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ClusteringParameters(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringParameters *arg1 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringParameters, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ClusteringParameters" "', argument " "1"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringParameters * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ClusteringParameters_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ClusteringParameters, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ClusteringParameters_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStats_obj_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringIterationStats *arg1 = (faiss::ClusteringIterationStats *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringIterationStats_obj_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringIterationStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStats_obj_set" "', argument " "1"" of type '" "faiss::ClusteringIterationStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringIterationStats * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringIterationStats_obj_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->obj = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStats_obj_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringIterationStats *arg1 = (faiss::ClusteringIterationStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringIterationStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStats_obj_get" "', argument " "1"" of type '" "faiss::ClusteringIterationStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringIterationStats * >(argp1);
+  result = (float) ((arg1)->obj);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStats_time_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringIterationStats *arg1 = (faiss::ClusteringIterationStats *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringIterationStats_time_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringIterationStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStats_time_set" "', argument " "1"" of type '" "faiss::ClusteringIterationStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringIterationStats * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringIterationStats_time_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->time = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStats_time_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringIterationStats *arg1 = (faiss::ClusteringIterationStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringIterationStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStats_time_get" "', argument " "1"" of type '" "faiss::ClusteringIterationStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringIterationStats * >(argp1);
+  result = (double) ((arg1)->time);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStats_time_search_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringIterationStats *arg1 = (faiss::ClusteringIterationStats *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringIterationStats_time_search_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringIterationStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStats_time_search_set" "', argument " "1"" of type '" "faiss::ClusteringIterationStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringIterationStats * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringIterationStats_time_search_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->time_search = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStats_time_search_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringIterationStats *arg1 = (faiss::ClusteringIterationStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringIterationStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStats_time_search_get" "', argument " "1"" of type '" "faiss::ClusteringIterationStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringIterationStats * >(argp1);
+  result = (double) ((arg1)->time_search);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStats_imbalance_factor_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringIterationStats *arg1 = (faiss::ClusteringIterationStats *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringIterationStats_imbalance_factor_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringIterationStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStats_imbalance_factor_set" "', argument " "1"" of type '" "faiss::ClusteringIterationStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringIterationStats * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringIterationStats_imbalance_factor_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->imbalance_factor = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStats_imbalance_factor_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringIterationStats *arg1 = (faiss::ClusteringIterationStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringIterationStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStats_imbalance_factor_get" "', argument " "1"" of type '" "faiss::ClusteringIterationStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringIterationStats * >(argp1);
+  result = (double) ((arg1)->imbalance_factor);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStats_nsplit_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringIterationStats *arg1 = (faiss::ClusteringIterationStats *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ClusteringIterationStats_nsplit_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringIterationStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStats_nsplit_set" "', argument " "1"" of type '" "faiss::ClusteringIterationStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringIterationStats * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ClusteringIterationStats_nsplit_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nsplit = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ClusteringIterationStats_nsplit_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringIterationStats *arg1 = (faiss::ClusteringIterationStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringIterationStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ClusteringIterationStats_nsplit_get" "', argument " "1"" of type '" "faiss::ClusteringIterationStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringIterationStats * >(argp1);
+  result = (int) ((arg1)->nsplit);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ClusteringIterationStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringIterationStats *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ClusteringIterationStats", 0, 0, 0)) SWIG_fail;
+  result = (faiss::ClusteringIterationStats *)new faiss::ClusteringIterationStats();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ClusteringIterationStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ClusteringIterationStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ClusteringIterationStats *arg1 = (faiss::ClusteringIterationStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ClusteringIterationStats, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ClusteringIterationStats" "', argument " "1"" of type '" "faiss::ClusteringIterationStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ClusteringIterationStats * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ClusteringIterationStats_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ClusteringIterationStats, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ClusteringIterationStats_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_Clustering_d_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Clustering_d_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering_d_set" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Clustering_d_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->d = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_d_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering_d_get" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  result = (size_t) ((arg1)->d);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_k_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Clustering_k_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering_k_set" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Clustering_k_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->k = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_k_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering_k_get" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  result = (size_t) ((arg1)->k);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_centroids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Clustering_centroids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering_centroids_set" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Clustering_centroids_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->centroids = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_centroids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering_centroids_get" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->centroids);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_iteration_stats_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  std::vector< faiss::ClusteringIterationStats > *arg2 = (std::vector< faiss::ClusteringIterationStats > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Clustering_iteration_stats_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering_iteration_stats_set" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Clustering_iteration_stats_set" "', argument " "2"" of type '" "std::vector< faiss::ClusteringIterationStats > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::ClusteringIterationStats > * >(argp2);
+  if (arg1) (arg1)->iteration_stats = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_iteration_stats_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::ClusteringIterationStats > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering_iteration_stats_get" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  result = (std::vector< faiss::ClusteringIterationStats > *)& ((arg1)->iteration_stats);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Clustering__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::Clustering *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_Clustering" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_Clustering" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Clustering *)new faiss::Clustering(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Clustering, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Clustering__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  faiss::ClusteringParameters *arg3 = 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  faiss::Clustering *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_Clustering" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_Clustering" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__ClusteringParameters,  0  | 0);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_Clustering" "', argument " "3"" of type '" "faiss::ClusteringParameters const &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_Clustering" "', argument " "3"" of type '" "faiss::ClusteringParameters const &""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::ClusteringParameters * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Clustering *)new faiss::Clustering(arg1,arg2,(faiss::ClusteringParameters const &)*arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Clustering, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Clustering(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_Clustering", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_Clustering__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__ClusteringParameters, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_Clustering__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_Clustering'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::Clustering::Clustering(int,int)\n"
+    "    faiss::Clustering::Clustering(int,int,faiss::ClusteringParameters const &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_train__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  faiss::Clustering::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index *arg4 = 0 ;
+  float *arg5 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering_train" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Clustering_train" "', argument " "2"" of type '" "faiss::Clustering::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Clustering::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Clustering_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_faiss__Index,  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "Clustering_train" "', argument " "4"" of type '" "faiss::Index &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Clustering_train" "', argument " "4"" of type '" "faiss::Index &""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "Clustering_train" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3,*arg4,(float const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_train__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  faiss::Clustering::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index *arg4 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering_train" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Clustering_train" "', argument " "2"" of type '" "faiss::Clustering::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Clustering::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Clustering_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_faiss__Index,  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "Clustering_train" "', argument " "4"" of type '" "faiss::Index &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Clustering_train" "', argument " "4"" of type '" "faiss::Index &""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3,*arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_train(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "Clustering_train", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Clustering, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_faiss__Index, SWIG_POINTER_NO_NULL);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_Clustering_train__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Clustering, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_faiss__Index, SWIG_POINTER_NO_NULL);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_Clustering_train__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'Clustering_train'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::Clustering::train(faiss::Clustering::idx_t,float const *,faiss::Index &,float const *)\n"
+    "    faiss::Clustering::train(faiss::Clustering::idx_t,float const *,faiss::Index &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_train_encoded__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  faiss::Clustering::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::Index *arg4 = (faiss::Index *) 0 ;
+  faiss::Index *arg5 = 0 ;
+  float *arg6 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering_train_encoded" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Clustering_train_encoded" "', argument " "2"" of type '" "faiss::Clustering::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Clustering::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Clustering_train_encoded" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "Clustering_train_encoded" "', argument " "4"" of type '" "faiss::Index const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5, SWIGTYPE_p_faiss__Index,  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "Clustering_train_encoded" "', argument " "5"" of type '" "faiss::Index &""'"); 
+  }
+  if (!argp5) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Clustering_train_encoded" "', argument " "5"" of type '" "faiss::Index &""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "Clustering_train_encoded" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train_encoded(arg2,(uint8_t const *)arg3,(faiss::Index const *)arg4,*arg5,(float const *)arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_train_encoded__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  faiss::Clustering::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::Index *arg4 = (faiss::Index *) 0 ;
+  faiss::Index *arg5 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering_train_encoded" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Clustering_train_encoded" "', argument " "2"" of type '" "faiss::Clustering::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Clustering::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Clustering_train_encoded" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "Clustering_train_encoded" "', argument " "4"" of type '" "faiss::Index const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5, SWIGTYPE_p_faiss__Index,  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "Clustering_train_encoded" "', argument " "5"" of type '" "faiss::Index &""'"); 
+  }
+  if (!argp5) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Clustering_train_encoded" "', argument " "5"" of type '" "faiss::Index &""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train_encoded(arg2,(uint8_t const *)arg3,(faiss::Index const *)arg4,*arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_train_encoded(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "Clustering_train_encoded", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Clustering, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_unsigned_char, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_faiss__Index, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_faiss__Index, SWIG_POINTER_NO_NULL);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_Clustering_train_encoded__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Clustering, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_unsigned_char, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_faiss__Index, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_faiss__Index, SWIG_POINTER_NO_NULL);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_Clustering_train_encoded__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'Clustering_train_encoded'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::Clustering::train_encoded(faiss::Clustering::idx_t,uint8_t const *,faiss::Index const *,faiss::Index &,float const *)\n"
+    "    faiss::Clustering::train_encoded(faiss::Clustering::idx_t,uint8_t const *,faiss::Index const *,faiss::Index &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering_post_process_centroids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering_post_process_centroids" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->post_process_centroids();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Clustering(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Clustering *arg1 = (faiss::Clustering *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Clustering" "', argument " "1"" of type '" "faiss::Clustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Clustering_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__Clustering, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Clustering_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_Clustering1D__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::Clustering1D *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_Clustering1D" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Clustering1D *)new faiss::Clustering1D(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Clustering1D, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Clustering1D__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  faiss::ClusteringParameters *arg2 = 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::Clustering1D *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_Clustering1D" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__ClusteringParameters,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_Clustering1D" "', argument " "2"" of type '" "faiss::ClusteringParameters const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_Clustering1D" "', argument " "2"" of type '" "faiss::ClusteringParameters const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ClusteringParameters * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Clustering1D *)new faiss::Clustering1D(arg1,(faiss::ClusteringParameters const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Clustering1D, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Clustering1D(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_Clustering1D", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_Clustering1D__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_faiss__ClusteringParameters, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_Clustering1D__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_Clustering1D'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::Clustering1D::Clustering1D(int)\n"
+    "    faiss::Clustering1D::Clustering1D(int,faiss::ClusteringParameters const &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_Clustering1D_train_exact(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Clustering1D *arg1 = (faiss::Clustering1D *) 0 ;
+  faiss::Clustering::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Clustering1D_train_exact", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering1D, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Clustering1D_train_exact" "', argument " "1"" of type '" "faiss::Clustering1D *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering1D * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Clustering1D_train_exact" "', argument " "2"" of type '" "faiss::Clustering::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Clustering::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Clustering1D_train_exact" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train_exact(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Clustering1D(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Clustering1D *arg1 = (faiss::Clustering1D *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Clustering1D, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Clustering1D" "', argument " "1"" of type '" "faiss::Clustering1D *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Clustering1D * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Clustering1D_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__Clustering1D, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Clustering1D_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimClusteringParameters_progressive_dim_steps_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClusteringParameters *arg1 = (faiss::ProgressiveDimClusteringParameters *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProgressiveDimClusteringParameters_progressive_dim_steps_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimClusteringParameters_progressive_dim_steps_set" "', argument " "1"" of type '" "faiss::ProgressiveDimClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClusteringParameters * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProgressiveDimClusteringParameters_progressive_dim_steps_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->progressive_dim_steps = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimClusteringParameters_progressive_dim_steps_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClusteringParameters *arg1 = (faiss::ProgressiveDimClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimClusteringParameters_progressive_dim_steps_get" "', argument " "1"" of type '" "faiss::ProgressiveDimClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClusteringParameters * >(argp1);
+  result = (int) ((arg1)->progressive_dim_steps);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimClusteringParameters_apply_pca_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClusteringParameters *arg1 = (faiss::ProgressiveDimClusteringParameters *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProgressiveDimClusteringParameters_apply_pca_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimClusteringParameters_apply_pca_set" "', argument " "1"" of type '" "faiss::ProgressiveDimClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClusteringParameters * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProgressiveDimClusteringParameters_apply_pca_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->apply_pca = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimClusteringParameters_apply_pca_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClusteringParameters *arg1 = (faiss::ProgressiveDimClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimClusteringParameters_apply_pca_get" "', argument " "1"" of type '" "faiss::ProgressiveDimClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClusteringParameters * >(argp1);
+  result = (bool) ((arg1)->apply_pca);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ProgressiveDimClusteringParameters(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClusteringParameters *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ProgressiveDimClusteringParameters", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ProgressiveDimClusteringParameters *)new faiss::ProgressiveDimClusteringParameters();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProgressiveDimClusteringParameters, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ProgressiveDimClusteringParameters(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClusteringParameters *arg1 = (faiss::ProgressiveDimClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClusteringParameters, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ProgressiveDimClusteringParameters" "', argument " "1"" of type '" "faiss::ProgressiveDimClusteringParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClusteringParameters * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ProgressiveDimClusteringParameters_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ProgressiveDimClusteringParameters, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ProgressiveDimClusteringParameters_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimIndexFactory___call__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimIndexFactory *arg1 = (faiss::ProgressiveDimIndexFactory *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::Index *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProgressiveDimIndexFactory___call__", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimIndexFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimIndexFactory___call__" "', argument " "1"" of type '" "faiss::ProgressiveDimIndexFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimIndexFactory * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProgressiveDimIndexFactory___call__" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)(arg1)->operator ()(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ProgressiveDimIndexFactory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimIndexFactory *arg1 = (faiss::ProgressiveDimIndexFactory *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimIndexFactory, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ProgressiveDimIndexFactory" "', argument " "1"" of type '" "faiss::ProgressiveDimIndexFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimIndexFactory * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ProgressiveDimIndexFactory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimIndexFactory *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ProgressiveDimIndexFactory", 0, 0, 0)) SWIG_fail;
+  result = (faiss::ProgressiveDimIndexFactory *)new faiss::ProgressiveDimIndexFactory();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProgressiveDimIndexFactory, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ProgressiveDimIndexFactory_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ProgressiveDimIndexFactory, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ProgressiveDimIndexFactory_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimClustering_d_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClustering *arg1 = (faiss::ProgressiveDimClustering *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProgressiveDimClustering_d_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimClustering_d_set" "', argument " "1"" of type '" "faiss::ProgressiveDimClustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClustering * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProgressiveDimClustering_d_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->d = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimClustering_d_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClustering *arg1 = (faiss::ProgressiveDimClustering *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimClustering_d_get" "', argument " "1"" of type '" "faiss::ProgressiveDimClustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClustering * >(argp1);
+  result = (size_t) ((arg1)->d);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimClustering_k_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClustering *arg1 = (faiss::ProgressiveDimClustering *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProgressiveDimClustering_k_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimClustering_k_set" "', argument " "1"" of type '" "faiss::ProgressiveDimClustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClustering * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProgressiveDimClustering_k_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->k = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimClustering_k_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClustering *arg1 = (faiss::ProgressiveDimClustering *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimClustering_k_get" "', argument " "1"" of type '" "faiss::ProgressiveDimClustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClustering * >(argp1);
+  result = (size_t) ((arg1)->k);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimClustering_centroids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClustering *arg1 = (faiss::ProgressiveDimClustering *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProgressiveDimClustering_centroids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimClustering_centroids_set" "', argument " "1"" of type '" "faiss::ProgressiveDimClustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClustering * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProgressiveDimClustering_centroids_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->centroids = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimClustering_centroids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClustering *arg1 = (faiss::ProgressiveDimClustering *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimClustering_centroids_get" "', argument " "1"" of type '" "faiss::ProgressiveDimClustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClustering * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->centroids);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimClustering_iteration_stats_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClustering *arg1 = (faiss::ProgressiveDimClustering *) 0 ;
+  std::vector< faiss::ClusteringIterationStats > *arg2 = (std::vector< faiss::ClusteringIterationStats > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProgressiveDimClustering_iteration_stats_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimClustering_iteration_stats_set" "', argument " "1"" of type '" "faiss::ProgressiveDimClustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClustering * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProgressiveDimClustering_iteration_stats_set" "', argument " "2"" of type '" "std::vector< faiss::ClusteringIterationStats > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::ClusteringIterationStats > * >(argp2);
+  if (arg1) (arg1)->iteration_stats = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimClustering_iteration_stats_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClustering *arg1 = (faiss::ProgressiveDimClustering *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::ClusteringIterationStats > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimClustering_iteration_stats_get" "', argument " "1"" of type '" "faiss::ProgressiveDimClustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClustering * >(argp1);
+  result = (std::vector< faiss::ClusteringIterationStats > *)& ((arg1)->iteration_stats);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__ClusteringIterationStats_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ProgressiveDimClustering__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::ProgressiveDimClustering *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ProgressiveDimClustering" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ProgressiveDimClustering" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ProgressiveDimClustering *)new faiss::ProgressiveDimClustering(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProgressiveDimClustering, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ProgressiveDimClustering__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  faiss::ProgressiveDimClusteringParameters *arg3 = 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  faiss::ProgressiveDimClustering *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ProgressiveDimClustering" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ProgressiveDimClustering" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__ProgressiveDimClusteringParameters,  0  | 0);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_ProgressiveDimClustering" "', argument " "3"" of type '" "faiss::ProgressiveDimClusteringParameters const &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ProgressiveDimClustering" "', argument " "3"" of type '" "faiss::ProgressiveDimClusteringParameters const &""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::ProgressiveDimClusteringParameters * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ProgressiveDimClustering *)new faiss::ProgressiveDimClustering(arg1,arg2,(faiss::ProgressiveDimClusteringParameters const &)*arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProgressiveDimClustering, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ProgressiveDimClustering(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_ProgressiveDimClustering", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_ProgressiveDimClustering__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__ProgressiveDimClusteringParameters, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_ProgressiveDimClustering__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_ProgressiveDimClustering'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ProgressiveDimClustering::ProgressiveDimClustering(int,int)\n"
+    "    faiss::ProgressiveDimClustering::ProgressiveDimClustering(int,int,faiss::ProgressiveDimClusteringParameters const &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProgressiveDimClustering_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClustering *arg1 = (faiss::ProgressiveDimClustering *) 0 ;
+  faiss::ProgressiveDimClustering::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::ProgressiveDimIndexFactory *arg4 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProgressiveDimClustering_train", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClustering, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProgressiveDimClustering_train" "', argument " "1"" of type '" "faiss::ProgressiveDimClustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClustering * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProgressiveDimClustering_train" "', argument " "2"" of type '" "faiss::ProgressiveDimClustering::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::ProgressiveDimClustering::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ProgressiveDimClustering_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_faiss__ProgressiveDimIndexFactory,  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ProgressiveDimClustering_train" "', argument " "4"" of type '" "faiss::ProgressiveDimIndexFactory &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "ProgressiveDimClustering_train" "', argument " "4"" of type '" "faiss::ProgressiveDimIndexFactory &""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::ProgressiveDimIndexFactory * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3,*arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ProgressiveDimClustering(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProgressiveDimClustering *arg1 = (faiss::ProgressiveDimClustering *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProgressiveDimClustering, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ProgressiveDimClustering" "', argument " "1"" of type '" "faiss::ProgressiveDimClustering *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProgressiveDimClustering * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ProgressiveDimClustering_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ProgressiveDimClustering, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ProgressiveDimClustering_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_kmeans_clustering(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  float *arg5 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  float result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "kmeans_clustering", 5, 5, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "kmeans_clustering" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "kmeans_clustering" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "kmeans_clustering" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "kmeans_clustering" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "kmeans_clustering" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)faiss::kmeans_clustering(arg1,arg2,arg3,(float const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_pairwise_extra_distances__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  int64_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  int64_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::MetricType arg6 ;
+  float arg7 ;
+  float *arg8 = (float *) 0 ;
+  int64_t arg9 ;
+  int64_t arg10 ;
+  int64_t arg11 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  float val7 ;
+  int ecode7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  long val9 ;
+  int ecode9 = 0 ;
+  long val10 ;
+  int ecode10 = 0 ;
+  long val11 ;
+  int ecode11 = 0 ;
+  
+  if ((nobjs < 11) || (nobjs > 11)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "pairwise_extra_distances" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "pairwise_extra_distances" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "pairwise_extra_distances" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "pairwise_extra_distances" "', argument " "4"" of type '" "int64_t""'");
+  } 
+  arg4 = static_cast< int64_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "pairwise_extra_distances" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "pairwise_extra_distances" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  ecode7 = SWIG_AsVal_float(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "pairwise_extra_distances" "', argument " "7"" of type '" "float""'");
+  } 
+  arg7 = static_cast< float >(val7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "pairwise_extra_distances" "', argument " "8"" of type '" "float *""'"); 
+  }
+  arg8 = reinterpret_cast< float * >(argp8);
+  ecode9 = SWIG_AsVal_long(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "pairwise_extra_distances" "', argument " "9"" of type '" "int64_t""'");
+  } 
+  arg9 = static_cast< int64_t >(val9);
+  ecode10 = SWIG_AsVal_long(swig_obj[9], &val10);
+  if (!SWIG_IsOK(ecode10)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode10), "in method '" "pairwise_extra_distances" "', argument " "10"" of type '" "int64_t""'");
+  } 
+  arg10 = static_cast< int64_t >(val10);
+  ecode11 = SWIG_AsVal_long(swig_obj[10], &val11);
+  if (!SWIG_IsOK(ecode11)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode11), "in method '" "pairwise_extra_distances" "', argument " "11"" of type '" "int64_t""'");
+  } 
+  arg11 = static_cast< int64_t >(val11);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::pairwise_extra_distances(arg1,arg2,(float const *)arg3,arg4,(float const *)arg5,arg6,arg7,arg8,arg9,arg10,arg11);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_pairwise_extra_distances__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  int64_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  int64_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::MetricType arg6 ;
+  float arg7 ;
+  float *arg8 = (float *) 0 ;
+  int64_t arg9 ;
+  int64_t arg10 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  float val7 ;
+  int ecode7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  long val9 ;
+  int ecode9 = 0 ;
+  long val10 ;
+  int ecode10 = 0 ;
+  
+  if ((nobjs < 10) || (nobjs > 10)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "pairwise_extra_distances" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "pairwise_extra_distances" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "pairwise_extra_distances" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "pairwise_extra_distances" "', argument " "4"" of type '" "int64_t""'");
+  } 
+  arg4 = static_cast< int64_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "pairwise_extra_distances" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "pairwise_extra_distances" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  ecode7 = SWIG_AsVal_float(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "pairwise_extra_distances" "', argument " "7"" of type '" "float""'");
+  } 
+  arg7 = static_cast< float >(val7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "pairwise_extra_distances" "', argument " "8"" of type '" "float *""'"); 
+  }
+  arg8 = reinterpret_cast< float * >(argp8);
+  ecode9 = SWIG_AsVal_long(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "pairwise_extra_distances" "', argument " "9"" of type '" "int64_t""'");
+  } 
+  arg9 = static_cast< int64_t >(val9);
+  ecode10 = SWIG_AsVal_long(swig_obj[9], &val10);
+  if (!SWIG_IsOK(ecode10)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode10), "in method '" "pairwise_extra_distances" "', argument " "10"" of type '" "int64_t""'");
+  } 
+  arg10 = static_cast< int64_t >(val10);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::pairwise_extra_distances(arg1,arg2,(float const *)arg3,arg4,(float const *)arg5,arg6,arg7,arg8,arg9,arg10);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_pairwise_extra_distances__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  int64_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  int64_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::MetricType arg6 ;
+  float arg7 ;
+  float *arg8 = (float *) 0 ;
+  int64_t arg9 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  float val7 ;
+  int ecode7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  long val9 ;
+  int ecode9 = 0 ;
+  
+  if ((nobjs < 9) || (nobjs > 9)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "pairwise_extra_distances" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "pairwise_extra_distances" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "pairwise_extra_distances" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "pairwise_extra_distances" "', argument " "4"" of type '" "int64_t""'");
+  } 
+  arg4 = static_cast< int64_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "pairwise_extra_distances" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "pairwise_extra_distances" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  ecode7 = SWIG_AsVal_float(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "pairwise_extra_distances" "', argument " "7"" of type '" "float""'");
+  } 
+  arg7 = static_cast< float >(val7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "pairwise_extra_distances" "', argument " "8"" of type '" "float *""'"); 
+  }
+  arg8 = reinterpret_cast< float * >(argp8);
+  ecode9 = SWIG_AsVal_long(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "pairwise_extra_distances" "', argument " "9"" of type '" "int64_t""'");
+  } 
+  arg9 = static_cast< int64_t >(val9);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::pairwise_extra_distances(arg1,arg2,(float const *)arg3,arg4,(float const *)arg5,arg6,arg7,arg8,arg9);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_pairwise_extra_distances__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  int64_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  int64_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::MetricType arg6 ;
+  float arg7 ;
+  float *arg8 = (float *) 0 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  float val7 ;
+  int ecode7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  
+  if ((nobjs < 8) || (nobjs > 8)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "pairwise_extra_distances" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "pairwise_extra_distances" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "pairwise_extra_distances" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "pairwise_extra_distances" "', argument " "4"" of type '" "int64_t""'");
+  } 
+  arg4 = static_cast< int64_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "pairwise_extra_distances" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "pairwise_extra_distances" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  ecode7 = SWIG_AsVal_float(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "pairwise_extra_distances" "', argument " "7"" of type '" "float""'");
+  } 
+  arg7 = static_cast< float >(val7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "pairwise_extra_distances" "', argument " "8"" of type '" "float *""'"); 
+  }
+  arg8 = reinterpret_cast< float * >(argp8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::pairwise_extra_distances(arg1,arg2,(float const *)arg3,arg4,(float const *)arg5,arg6,arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_pairwise_extra_distances(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[12] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "pairwise_extra_distances", 0, 11, argv))) SWIG_fail;
+  --argc;
+  if (argc == 8) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_float(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_float, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    return _wrap_pairwise_extra_distances__SWIG_3(self, argc, argv);
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 9) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_float(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_float, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_long(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      return _wrap_pairwise_extra_distances__SWIG_2(self, argc, argv);
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 10) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_float(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_float, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_long(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      {
+                        int res = SWIG_AsVal_long(argv[9], NULL);
+                        _v = SWIG_CheckState(res);
+                      }
+                      if (_v) {
+                        return _wrap_pairwise_extra_distances__SWIG_1(self, argc, argv);
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 11) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_float(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_float, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_long(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      {
+                        int res = SWIG_AsVal_long(argv[9], NULL);
+                        _v = SWIG_CheckState(res);
+                      }
+                      if (_v) {
+                        {
+                          int res = SWIG_AsVal_long(argv[10], NULL);
+                          _v = SWIG_CheckState(res);
+                        }
+                        if (_v) {
+                          return _wrap_pairwise_extra_distances__SWIG_0(self, argc, argv);
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'pairwise_extra_distances'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::pairwise_extra_distances(int64_t,int64_t,float const *,int64_t,float const *,faiss::MetricType,float,float *,int64_t,int64_t,int64_t)\n"
+    "    faiss::pairwise_extra_distances(int64_t,int64_t,float const *,int64_t,float const *,faiss::MetricType,float,float *,int64_t,int64_t)\n"
+    "    faiss::pairwise_extra_distances(int64_t,int64_t,float const *,int64_t,float const *,faiss::MetricType,float,float *,int64_t)\n"
+    "    faiss::pairwise_extra_distances(int64_t,int64_t,float const *,int64_t,float const *,faiss::MetricType,float,float *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_knn_extra_metrics(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  faiss::MetricType arg6 ;
+  float arg7 ;
+  faiss::float_maxheap_array_t *arg8 = (faiss::float_maxheap_array_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  float val7 ;
+  int ecode7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  PyObject *swig_obj[8] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "knn_extra_metrics", 8, 8, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "knn_extra_metrics" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "knn_extra_metrics" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "knn_extra_metrics" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "knn_extra_metrics" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "knn_extra_metrics" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "knn_extra_metrics" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  ecode7 = SWIG_AsVal_float(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "knn_extra_metrics" "', argument " "7"" of type '" "float""'");
+  } 
+  arg7 = static_cast< float >(val7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "knn_extra_metrics" "', argument " "8"" of type '" "faiss::float_maxheap_array_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::float_maxheap_array_t * >(argp8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::knn_extra_metrics((float const *)arg1,(float const *)arg2,arg3,arg4,arg5,arg6,arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_get_extra_distance_computer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  faiss::MetricType arg2 ;
+  float arg3 ;
+  size_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  float val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  faiss::DistanceComputer *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "get_extra_distance_computer", 5, 5, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "get_extra_distance_computer" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "get_extra_distance_computer" "', argument " "2"" of type '" "faiss::MetricType""'");
+  } 
+  arg2 = static_cast< faiss::MetricType >(val2);
+  ecode3 = SWIG_AsVal_float(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "get_extra_distance_computer" "', argument " "3"" of type '" "float""'");
+  } 
+  arg3 = static_cast< float >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "get_extra_distance_computer" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "get_extra_distance_computer" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::DistanceComputer *)faiss::get_extra_distance_computer(arg1,arg2,arg3,arg4,(float const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DistanceComputer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_d_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_d_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_d_set" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProductQuantizer_d_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->d = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_d_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_d_get" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  result = (size_t) ((arg1)->d);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_M_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_M_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_M_set" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProductQuantizer_M_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->M = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_M_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_M_get" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  result = (size_t) ((arg1)->M);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_nbits_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_nbits_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_nbits_set" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProductQuantizer_nbits_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nbits = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_nbits_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_nbits_get" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  result = (size_t) ((arg1)->nbits);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_dsub_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_dsub_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_dsub_set" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProductQuantizer_dsub_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->dsub = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_dsub_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_dsub_get" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  result = (size_t) ((arg1)->dsub);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_code_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_code_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_code_size_set" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProductQuantizer_code_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->code_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_code_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_code_size_get" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  result = (size_t) ((arg1)->code_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_ksub_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_ksub_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_ksub_set" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProductQuantizer_ksub_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->ksub = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_ksub_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_ksub_get" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  result = (size_t) ((arg1)->ksub);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_verbose_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_verbose_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_verbose_set" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProductQuantizer_verbose_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->verbose = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_verbose_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_verbose_get" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  result = (bool) ((arg1)->verbose);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_train_type_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  faiss::ProductQuantizer::train_type_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_train_type_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_train_type_set" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProductQuantizer_train_type_set" "', argument " "2"" of type '" "faiss::ProductQuantizer::train_type_t""'");
+  } 
+  arg2 = static_cast< faiss::ProductQuantizer::train_type_t >(val2);
+  if (arg1) (arg1)->train_type = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_train_type_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ProductQuantizer::train_type_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_train_type_get" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  result = (faiss::ProductQuantizer::train_type_t) ((arg1)->train_type);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_cp_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  faiss::ClusteringParameters *arg2 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_cp_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_cp_set" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_cp_set" "', argument " "2"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ClusteringParameters * >(argp2);
+  if (arg1) (arg1)->cp = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_cp_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ClusteringParameters *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_cp_get" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  result = (faiss::ClusteringParameters *)& ((arg1)->cp);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_assign_index_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_assign_index_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_assign_index_set" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_assign_index_set" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  if (arg1) (arg1)->assign_index = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_assign_index_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_assign_index_get" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  result = (faiss::Index *) ((arg1)->assign_index);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_centroids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_centroids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_centroids_set" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_centroids_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->centroids = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_centroids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_centroids_get" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->centroids);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_get_centroids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  float *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_get_centroids", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_get_centroids" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProductQuantizer_get_centroids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ProductQuantizer_get_centroids" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float *)(arg1)->get_centroids(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  int arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_train" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProductQuantizer_train" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ProductQuantizer_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ProductQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::ProductQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ProductQuantizer" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ProductQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_ProductQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ProductQuantizer *)new faiss::ProductQuantizer(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProductQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ProductQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ProductQuantizer *)new faiss::ProductQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProductQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ProductQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_ProductQuantizer", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_ProductQuantizer__SWIG_1(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_ProductQuantizer__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_ProductQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ProductQuantizer::ProductQuantizer(size_t,size_t,size_t)\n"
+    "    faiss::ProductQuantizer::ProductQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_set_derived_values(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_set_derived_values" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_derived_values();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_set_params(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_set_params", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_set_params" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_set_params" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ProductQuantizer_set_params" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_params((float const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_compute_code(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_compute_code", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_compute_code" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_compute_code" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ProductQuantizer_compute_code" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->compute_code((float const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_compute_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_compute_codes", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_compute_codes" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_compute_codes" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ProductQuantizer_compute_codes" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ProductQuantizer_compute_codes" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->compute_codes((float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_compute_codes_with_assign_index(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_compute_codes_with_assign_index", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_compute_codes_with_assign_index" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_compute_codes_with_assign_index" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ProductQuantizer_compute_codes_with_assign_index" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ProductQuantizer_compute_codes_with_assign_index" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->compute_codes_with_assign_index((float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_decode__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_decode" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_decode" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ProductQuantizer_decode" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->decode((uint8_t const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_decode__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_decode" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_decode" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ProductQuantizer_decode" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ProductQuantizer_decode" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->decode((uint8_t const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_decode(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ProductQuantizer_decode", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ProductQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_unsigned_char, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_ProductQuantizer_decode__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ProductQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_unsigned_char, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_ProductQuantizer_decode__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ProductQuantizer_decode'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ProductQuantizer::decode(uint8_t const *,float *) const\n"
+    "    faiss::ProductQuantizer::decode(uint8_t const *,float *,size_t) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_compute_code_from_distance_table(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_compute_code_from_distance_table", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_compute_code_from_distance_table" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_compute_code_from_distance_table" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ProductQuantizer_compute_code_from_distance_table" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->compute_code_from_distance_table((float const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_compute_distance_table(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_compute_distance_table", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_compute_distance_table" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_compute_distance_table" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ProductQuantizer_compute_distance_table" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->compute_distance_table((float const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_compute_inner_prod_table(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_compute_inner_prod_table", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_compute_inner_prod_table" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_compute_inner_prod_table" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ProductQuantizer_compute_inner_prod_table" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->compute_inner_prod_table((float const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_compute_distance_tables(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_compute_distance_tables", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_compute_distance_tables" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProductQuantizer_compute_distance_tables" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ProductQuantizer_compute_distance_tables" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ProductQuantizer_compute_distance_tables" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->compute_distance_tables(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_compute_inner_prod_tables(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_compute_inner_prod_tables", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_compute_inner_prod_tables" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ProductQuantizer_compute_inner_prod_tables" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ProductQuantizer_compute_inner_prod_tables" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ProductQuantizer_compute_inner_prod_tables" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->compute_inner_prod_tables(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_search__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  size_t arg5 ;
+  faiss::float_maxheap_array_t *arg6 = (faiss::float_maxheap_array_t *) 0 ;
+  bool arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  bool val7 ;
+  int ecode7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_search" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_search" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ProductQuantizer_search" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ProductQuantizer_search" "', argument " "4"" of type '" "uint8_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ProductQuantizer_search" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ProductQuantizer_search" "', argument " "6"" of type '" "faiss::float_maxheap_array_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::float_maxheap_array_t * >(argp6);
+  ecode7 = SWIG_AsVal_bool(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "ProductQuantizer_search" "', argument " "7"" of type '" "bool""'");
+  } 
+  arg7 = static_cast< bool >(val7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->search((float const *)arg2,arg3,(uint8_t const *)arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_search__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  size_t arg5 ;
+  faiss::float_maxheap_array_t *arg6 = (faiss::float_maxheap_array_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_search" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_search" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ProductQuantizer_search" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ProductQuantizer_search" "', argument " "4"" of type '" "uint8_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ProductQuantizer_search" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ProductQuantizer_search" "', argument " "6"" of type '" "faiss::float_maxheap_array_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::float_maxheap_array_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->search((float const *)arg2,arg3,(uint8_t const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_search(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ProductQuantizer_search", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ProductQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_float, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_unsigned_char, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_ProductQuantizer_search__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ProductQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_float, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_unsigned_char, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_bool(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  return _wrap_ProductQuantizer_search__SWIG_0(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ProductQuantizer_search'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ProductQuantizer::search(float const *,size_t,uint8_t const *,size_t const,faiss::float_maxheap_array_t *,bool) const\n"
+    "    faiss::ProductQuantizer::search(float const *,size_t,uint8_t const *,size_t const,faiss::float_maxheap_array_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_search_ip__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  size_t arg5 ;
+  faiss::float_minheap_array_t *arg6 = (faiss::float_minheap_array_t *) 0 ;
+  bool arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  bool val7 ;
+  int ecode7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_search_ip" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_search_ip" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ProductQuantizer_search_ip" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ProductQuantizer_search_ip" "', argument " "4"" of type '" "uint8_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ProductQuantizer_search_ip" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ProductQuantizer_search_ip" "', argument " "6"" of type '" "faiss::float_minheap_array_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::float_minheap_array_t * >(argp6);
+  ecode7 = SWIG_AsVal_bool(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "ProductQuantizer_search_ip" "', argument " "7"" of type '" "bool""'");
+  } 
+  arg7 = static_cast< bool >(val7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->search_ip((float const *)arg2,arg3,(uint8_t const *)arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_search_ip__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  size_t arg3 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  size_t arg5 ;
+  faiss::float_minheap_array_t *arg6 = (faiss::float_minheap_array_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_search_ip" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_search_ip" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ProductQuantizer_search_ip" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ProductQuantizer_search_ip" "', argument " "4"" of type '" "uint8_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ProductQuantizer_search_ip" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ProductQuantizer_search_ip" "', argument " "6"" of type '" "faiss::float_minheap_array_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::float_minheap_array_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->search_ip((float const *)arg2,arg3,(uint8_t const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_search_ip(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ProductQuantizer_search_ip", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ProductQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_float, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_unsigned_char, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_ProductQuantizer_search_ip__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ProductQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_float, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_unsigned_char, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_bool(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  return _wrap_ProductQuantizer_search_ip__SWIG_0(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ProductQuantizer_search_ip'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ProductQuantizer::search_ip(float const *,size_t,uint8_t const *,size_t const,faiss::float_minheap_array_t *,bool) const\n"
+    "    faiss::ProductQuantizer::search_ip(float const *,size_t,uint8_t const *,size_t const,faiss::float_minheap_array_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_sdc_table_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ProductQuantizer_sdc_table_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_sdc_table_set" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_sdc_table_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->sdc_table = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_sdc_table_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_sdc_table_get" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->sdc_table);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_compute_sdc_table(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_compute_sdc_table" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->compute_sdc_table();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_search_sdc__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  size_t arg3 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  size_t arg5 ;
+  faiss::float_maxheap_array_t *arg6 = (faiss::float_maxheap_array_t *) 0 ;
+  bool arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  bool val7 ;
+  int ecode7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_search_sdc" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_search_sdc" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ProductQuantizer_search_sdc" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ProductQuantizer_search_sdc" "', argument " "4"" of type '" "uint8_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ProductQuantizer_search_sdc" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ProductQuantizer_search_sdc" "', argument " "6"" of type '" "faiss::float_maxheap_array_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::float_maxheap_array_t * >(argp6);
+  ecode7 = SWIG_AsVal_bool(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "ProductQuantizer_search_sdc" "', argument " "7"" of type '" "bool""'");
+  } 
+  arg7 = static_cast< bool >(val7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->search_sdc((uint8_t const *)arg2,arg3,(uint8_t const *)arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_search_sdc__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  size_t arg3 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  size_t arg5 ;
+  faiss::float_maxheap_array_t *arg6 = (faiss::float_maxheap_array_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ProductQuantizer_search_sdc" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ProductQuantizer_search_sdc" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ProductQuantizer_search_sdc" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ProductQuantizer_search_sdc" "', argument " "4"" of type '" "uint8_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ProductQuantizer_search_sdc" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ProductQuantizer_search_sdc" "', argument " "6"" of type '" "faiss::float_maxheap_array_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::float_maxheap_array_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ProductQuantizer const *)arg1)->search_sdc((uint8_t const *)arg2,arg3,(uint8_t const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ProductQuantizer_search_sdc(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ProductQuantizer_search_sdc", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ProductQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_unsigned_char, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_unsigned_char, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_ProductQuantizer_search_sdc__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ProductQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_unsigned_char, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_unsigned_char, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_bool(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  return _wrap_ProductQuantizer_search_sdc__SWIG_0(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ProductQuantizer_search_sdc'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ProductQuantizer::search_sdc(uint8_t const *,size_t,uint8_t const *,size_t const,faiss::float_maxheap_array_t *,bool) const\n"
+    "    faiss::ProductQuantizer::search_sdc(uint8_t const *,size_t,uint8_t const *,size_t const,faiss::float_maxheap_array_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ProductQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ProductQuantizer" "', argument " "1"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ProductQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ProductQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ProductQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_PQEncoderGeneric_code_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoderGeneric *arg1 = (faiss::PQEncoderGeneric *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PQEncoderGeneric_code_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoderGeneric_code_set" "', argument " "1"" of type '" "faiss::PQEncoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoderGeneric * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PQEncoderGeneric_code_set" "', argument " "2"" of type '" "uint8_t *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  if (arg1) (arg1)->code = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQEncoderGeneric_code_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoderGeneric *arg1 = (faiss::PQEncoderGeneric *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint8_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoderGeneric_code_get" "', argument " "1"" of type '" "faiss::PQEncoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoderGeneric * >(argp1);
+  result = (uint8_t *) ((arg1)->code);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQEncoderGeneric_offset_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoderGeneric *arg1 = (faiss::PQEncoderGeneric *) 0 ;
+  uint8_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned char val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PQEncoderGeneric_offset_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoderGeneric_offset_set" "', argument " "1"" of type '" "faiss::PQEncoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoderGeneric * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_char(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PQEncoderGeneric_offset_set" "', argument " "2"" of type '" "uint8_t""'");
+  } 
+  arg2 = static_cast< uint8_t >(val2);
+  if (arg1) (arg1)->offset = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQEncoderGeneric_offset_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoderGeneric *arg1 = (faiss::PQEncoderGeneric *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint8_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoderGeneric_offset_get" "', argument " "1"" of type '" "faiss::PQEncoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoderGeneric * >(argp1);
+  result = (uint8_t) ((arg1)->offset);
+  resultobj = SWIG_From_unsigned_SS_char(static_cast< unsigned char >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQEncoderGeneric_nbits_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoderGeneric *arg1 = (faiss::PQEncoderGeneric *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoderGeneric_nbits_get" "', argument " "1"" of type '" "faiss::PQEncoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoderGeneric * >(argp1);
+  result = (int)(int) ((arg1)->nbits);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQEncoderGeneric_reg_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoderGeneric *arg1 = (faiss::PQEncoderGeneric *) 0 ;
+  uint8_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned char val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PQEncoderGeneric_reg_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoderGeneric_reg_set" "', argument " "1"" of type '" "faiss::PQEncoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoderGeneric * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_char(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PQEncoderGeneric_reg_set" "', argument " "2"" of type '" "uint8_t""'");
+  } 
+  arg2 = static_cast< uint8_t >(val2);
+  if (arg1) (arg1)->reg = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQEncoderGeneric_reg_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoderGeneric *arg1 = (faiss::PQEncoderGeneric *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint8_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoderGeneric_reg_get" "', argument " "1"" of type '" "faiss::PQEncoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoderGeneric * >(argp1);
+  result = (uint8_t) ((arg1)->reg);
+  resultobj = SWIG_From_unsigned_SS_char(static_cast< unsigned char >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PQEncoderGeneric__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  int arg2 ;
+  uint8_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  unsigned char val3 ;
+  int ecode3 = 0 ;
+  faiss::PQEncoderGeneric *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_PQEncoderGeneric" "', argument " "1"" of type '" "uint8_t *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_PQEncoderGeneric" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_unsigned_SS_char(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_PQEncoderGeneric" "', argument " "3"" of type '" "uint8_t""'");
+  } 
+  arg3 = static_cast< uint8_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PQEncoderGeneric *)new faiss::PQEncoderGeneric(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PQEncoderGeneric, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PQEncoderGeneric__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::PQEncoderGeneric *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_PQEncoderGeneric" "', argument " "1"" of type '" "uint8_t *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_PQEncoderGeneric" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PQEncoderGeneric *)new faiss::PQEncoderGeneric(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PQEncoderGeneric, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PQEncoderGeneric(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_PQEncoderGeneric", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_unsigned_char, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_PQEncoderGeneric__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_unsigned_char, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_unsigned_SS_char(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_PQEncoderGeneric__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_PQEncoderGeneric'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::PQEncoderGeneric::PQEncoderGeneric(uint8_t *,int,uint8_t)\n"
+    "    faiss::PQEncoderGeneric::PQEncoderGeneric(uint8_t *,int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQEncoderGeneric_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoderGeneric *arg1 = (faiss::PQEncoderGeneric *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PQEncoderGeneric_encode", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoderGeneric_encode" "', argument " "1"" of type '" "faiss::PQEncoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoderGeneric * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PQEncoderGeneric_encode" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->encode(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_PQEncoderGeneric(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoderGeneric *arg1 = (faiss::PQEncoderGeneric *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoderGeneric, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_PQEncoderGeneric" "', argument " "1"" of type '" "faiss::PQEncoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoderGeneric * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *PQEncoderGeneric_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__PQEncoderGeneric, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *PQEncoderGeneric_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_PQEncoder8_code_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoder8 *arg1 = (faiss::PQEncoder8 *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PQEncoder8_code_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoder8, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoder8_code_set" "', argument " "1"" of type '" "faiss::PQEncoder8 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoder8 * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PQEncoder8_code_set" "', argument " "2"" of type '" "uint8_t *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  if (arg1) (arg1)->code = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQEncoder8_code_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoder8 *arg1 = (faiss::PQEncoder8 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint8_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoder8, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoder8_code_get" "', argument " "1"" of type '" "faiss::PQEncoder8 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoder8 * >(argp1);
+  result = (uint8_t *) ((arg1)->code);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PQEncoder8(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::PQEncoder8 *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_PQEncoder8", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_PQEncoder8" "', argument " "1"" of type '" "uint8_t *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_PQEncoder8" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PQEncoder8 *)new faiss::PQEncoder8(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PQEncoder8, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQEncoder8_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoder8 *arg1 = (faiss::PQEncoder8 *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PQEncoder8_encode", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoder8, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoder8_encode" "', argument " "1"" of type '" "faiss::PQEncoder8 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoder8 * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PQEncoder8_encode" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->encode(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_PQEncoder8(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoder8 *arg1 = (faiss::PQEncoder8 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoder8, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_PQEncoder8" "', argument " "1"" of type '" "faiss::PQEncoder8 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoder8 * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *PQEncoder8_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__PQEncoder8, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *PQEncoder8_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_PQEncoder16_code_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoder16 *arg1 = (faiss::PQEncoder16 *) 0 ;
+  uint16_t *arg2 = (uint16_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PQEncoder16_code_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoder16, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoder16_code_set" "', argument " "1"" of type '" "faiss::PQEncoder16 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoder16 * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_short, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PQEncoder16_code_set" "', argument " "2"" of type '" "uint16_t *""'"); 
+  }
+  arg2 = reinterpret_cast< uint16_t * >(argp2);
+  if (arg1) (arg1)->code = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQEncoder16_code_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoder16 *arg1 = (faiss::PQEncoder16 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint16_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoder16, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoder16_code_get" "', argument " "1"" of type '" "faiss::PQEncoder16 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoder16 * >(argp1);
+  result = (uint16_t *) ((arg1)->code);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_short, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PQEncoder16(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::PQEncoder16 *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_PQEncoder16", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_PQEncoder16" "', argument " "1"" of type '" "uint8_t *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_PQEncoder16" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PQEncoder16 *)new faiss::PQEncoder16(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PQEncoder16, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQEncoder16_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoder16 *arg1 = (faiss::PQEncoder16 *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PQEncoder16_encode", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoder16, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQEncoder16_encode" "', argument " "1"" of type '" "faiss::PQEncoder16 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoder16 * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PQEncoder16_encode" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->encode(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_PQEncoder16(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQEncoder16 *arg1 = (faiss::PQEncoder16 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQEncoder16, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_PQEncoder16" "', argument " "1"" of type '" "faiss::PQEncoder16 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQEncoder16 * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *PQEncoder16_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__PQEncoder16, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *PQEncoder16_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_PQDecoderGeneric_code_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoderGeneric *arg1 = (faiss::PQDecoderGeneric *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PQDecoderGeneric_code_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoderGeneric_code_set" "', argument " "1"" of type '" "faiss::PQDecoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoderGeneric * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PQDecoderGeneric_code_set" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  if (arg1) (arg1)->code = (uint8_t const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQDecoderGeneric_code_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoderGeneric *arg1 = (faiss::PQDecoderGeneric *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint8_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoderGeneric_code_get" "', argument " "1"" of type '" "faiss::PQDecoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoderGeneric * >(argp1);
+  result = (uint8_t *) ((arg1)->code);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQDecoderGeneric_offset_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoderGeneric *arg1 = (faiss::PQDecoderGeneric *) 0 ;
+  uint8_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned char val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PQDecoderGeneric_offset_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoderGeneric_offset_set" "', argument " "1"" of type '" "faiss::PQDecoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoderGeneric * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_char(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PQDecoderGeneric_offset_set" "', argument " "2"" of type '" "uint8_t""'");
+  } 
+  arg2 = static_cast< uint8_t >(val2);
+  if (arg1) (arg1)->offset = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQDecoderGeneric_offset_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoderGeneric *arg1 = (faiss::PQDecoderGeneric *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint8_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoderGeneric_offset_get" "', argument " "1"" of type '" "faiss::PQDecoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoderGeneric * >(argp1);
+  result = (uint8_t) ((arg1)->offset);
+  resultobj = SWIG_From_unsigned_SS_char(static_cast< unsigned char >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQDecoderGeneric_nbits_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoderGeneric *arg1 = (faiss::PQDecoderGeneric *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoderGeneric_nbits_get" "', argument " "1"" of type '" "faiss::PQDecoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoderGeneric * >(argp1);
+  result = (int)(int) ((arg1)->nbits);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQDecoderGeneric_mask_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoderGeneric *arg1 = (faiss::PQDecoderGeneric *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoderGeneric_mask_get" "', argument " "1"" of type '" "faiss::PQDecoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoderGeneric * >(argp1);
+  result = (uint64_t)(uint64_t) ((arg1)->mask);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQDecoderGeneric_reg_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoderGeneric *arg1 = (faiss::PQDecoderGeneric *) 0 ;
+  uint8_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned char val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PQDecoderGeneric_reg_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoderGeneric_reg_set" "', argument " "1"" of type '" "faiss::PQDecoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoderGeneric * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_char(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PQDecoderGeneric_reg_set" "', argument " "2"" of type '" "uint8_t""'");
+  } 
+  arg2 = static_cast< uint8_t >(val2);
+  if (arg1) (arg1)->reg = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQDecoderGeneric_reg_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoderGeneric *arg1 = (faiss::PQDecoderGeneric *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint8_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoderGeneric_reg_get" "', argument " "1"" of type '" "faiss::PQDecoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoderGeneric * >(argp1);
+  result = (uint8_t) ((arg1)->reg);
+  resultobj = SWIG_From_unsigned_SS_char(static_cast< unsigned char >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PQDecoderGeneric(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::PQDecoderGeneric *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_PQDecoderGeneric", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_PQDecoderGeneric" "', argument " "1"" of type '" "uint8_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_PQDecoderGeneric" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PQDecoderGeneric *)new faiss::PQDecoderGeneric((uint8_t const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PQDecoderGeneric, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQDecoderGeneric_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoderGeneric *arg1 = (faiss::PQDecoderGeneric *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoderGeneric, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoderGeneric_decode" "', argument " "1"" of type '" "faiss::PQDecoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoderGeneric * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)(arg1)->decode();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_PQDecoderGeneric(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoderGeneric *arg1 = (faiss::PQDecoderGeneric *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoderGeneric, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_PQDecoderGeneric" "', argument " "1"" of type '" "faiss::PQDecoderGeneric *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoderGeneric * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *PQDecoderGeneric_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__PQDecoderGeneric, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *PQDecoderGeneric_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_PQDecoder8_code_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoder8 *arg1 = (faiss::PQDecoder8 *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PQDecoder8_code_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoder8, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoder8_code_set" "', argument " "1"" of type '" "faiss::PQDecoder8 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoder8 * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PQDecoder8_code_set" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  if (arg1) (arg1)->code = (uint8_t const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQDecoder8_code_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoder8 *arg1 = (faiss::PQDecoder8 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint8_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoder8, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoder8_code_get" "', argument " "1"" of type '" "faiss::PQDecoder8 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoder8 * >(argp1);
+  result = (uint8_t *) ((arg1)->code);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PQDecoder8(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::PQDecoder8 *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_PQDecoder8", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_PQDecoder8" "', argument " "1"" of type '" "uint8_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_PQDecoder8" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PQDecoder8 *)new faiss::PQDecoder8((uint8_t const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PQDecoder8, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQDecoder8_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoder8 *arg1 = (faiss::PQDecoder8 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoder8, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoder8_decode" "', argument " "1"" of type '" "faiss::PQDecoder8 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoder8 * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)(arg1)->decode();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_PQDecoder8(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoder8 *arg1 = (faiss::PQDecoder8 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoder8, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_PQDecoder8" "', argument " "1"" of type '" "faiss::PQDecoder8 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoder8 * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *PQDecoder8_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__PQDecoder8, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *PQDecoder8_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_PQDecoder16_code_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoder16 *arg1 = (faiss::PQDecoder16 *) 0 ;
+  uint16_t *arg2 = (uint16_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PQDecoder16_code_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoder16, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoder16_code_set" "', argument " "1"" of type '" "faiss::PQDecoder16 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoder16 * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_short, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PQDecoder16_code_set" "', argument " "2"" of type '" "uint16_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint16_t * >(argp2);
+  if (arg1) (arg1)->code = (uint16_t const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQDecoder16_code_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoder16 *arg1 = (faiss::PQDecoder16 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint16_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoder16, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoder16_code_get" "', argument " "1"" of type '" "faiss::PQDecoder16 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoder16 * >(argp1);
+  result = (uint16_t *) ((arg1)->code);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_short, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PQDecoder16(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint8_t *arg1 = (uint8_t *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::PQDecoder16 *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_PQDecoder16", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_PQDecoder16" "', argument " "1"" of type '" "uint8_t const *""'"); 
+  }
+  arg1 = reinterpret_cast< uint8_t * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_PQDecoder16" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PQDecoder16 *)new faiss::PQDecoder16((uint8_t const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PQDecoder16, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PQDecoder16_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoder16 *arg1 = (faiss::PQDecoder16 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoder16, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PQDecoder16_decode" "', argument " "1"" of type '" "faiss::PQDecoder16 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoder16 * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)(arg1)->decode();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_PQDecoder16(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PQDecoder16 *arg1 = (faiss::PQDecoder16 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PQDecoder16, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_PQDecoder16" "', argument " "1"" of type '" "faiss::PQDecoder16 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PQDecoder16 * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *PQDecoder16_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__PQDecoder16, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *PQDecoder16_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_d_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_d_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_d_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_d_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->d = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_d_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_d_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (size_t) ((arg1)->d);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_M_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_M_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_M_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_M_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->M = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_M_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_M_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (size_t) ((arg1)->M);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_nbits_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  std::vector< size_t > *arg2 = (std::vector< size_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_nbits_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_nbits_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AdditiveQuantizer_nbits_set" "', argument " "2"" of type '" "std::vector< size_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< size_t > * >(argp2);
+  if (arg1) (arg1)->nbits = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_nbits_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< size_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_nbits_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (std::vector< size_t > *)& ((arg1)->nbits);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_codebooks_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_codebooks_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_codebooks_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AdditiveQuantizer_codebooks_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->codebooks = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_codebooks_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_codebooks_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->codebooks);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_codebook_offsets_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  std::vector< uint64_t > *arg2 = (std::vector< uint64_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_codebook_offsets_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_codebook_offsets_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AdditiveQuantizer_codebook_offsets_set" "', argument " "2"" of type '" "std::vector< uint64_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< uint64_t > * >(argp2);
+  if (arg1) (arg1)->codebook_offsets = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_codebook_offsets_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< uint64_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_codebook_offsets_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (std::vector< uint64_t > *)& ((arg1)->codebook_offsets);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_code_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_code_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_code_size_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_code_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->code_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_code_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_code_size_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (size_t) ((arg1)->code_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_tot_bits_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_tot_bits_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_tot_bits_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_tot_bits_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->tot_bits = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_tot_bits_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_tot_bits_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (size_t) ((arg1)->tot_bits);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_total_codebook_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_total_codebook_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_total_codebook_size_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_total_codebook_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->total_codebook_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_total_codebook_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_total_codebook_size_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (size_t) ((arg1)->total_codebook_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_only_8bit_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_only_8bit_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_only_8bit_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_only_8bit_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->only_8bit = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_only_8bit_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_only_8bit_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (bool) ((arg1)->only_8bit);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_verbose_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_verbose_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_verbose_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_verbose_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->verbose = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_verbose_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_verbose_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (bool) ((arg1)->verbose);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_is_trained_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_is_trained_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_is_trained_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_is_trained_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->is_trained = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_is_trained_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_is_trained_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (bool) ((arg1)->is_trained);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_qnorm_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  faiss::IndexFlat1D *arg2 = (faiss::IndexFlat1D *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_qnorm_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_qnorm_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlat1D, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AdditiveQuantizer_qnorm_set" "', argument " "2"" of type '" "faiss::IndexFlat1D *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlat1D * >(argp2);
+  if (arg1) (arg1)->qnorm = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_qnorm_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IndexFlat1D *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_qnorm_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (faiss::IndexFlat1D *)& ((arg1)->qnorm);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexFlat1D, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_encode_qcint(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint32_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_encode_qcint", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_encode_qcint" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_encode_qcint" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint32_t)((faiss::AdditiveQuantizer const *)arg1)->encode_qcint(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_int(static_cast< unsigned int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_decode_qcint(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  uint32_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  float result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_decode_qcint", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_decode_qcint" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_decode_qcint" "', argument " "2"" of type '" "uint32_t""'");
+  } 
+  arg2 = static_cast< uint32_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)((faiss::AdditiveQuantizer const *)arg1)->decode_qcint(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_set_derived_values(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_set_derived_values" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_derived_values();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_train" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_train" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveQuantizer_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_compute_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_compute_codes", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_compute_codes" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AdditiveQuantizer_compute_codes" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveQuantizer_compute_codes" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "AdditiveQuantizer_compute_codes" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveQuantizer const *)arg1)->compute_codes((float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_pack_codes__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  size_t arg2 ;
+  int32_t *arg3 = (int32_t *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  int64_t arg5 ;
+  float *arg6 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "3"" of type '" "int32_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< int32_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveQuantizer const *)arg1)->pack_codes(arg2,(int32_t const *)arg3,arg4,arg5,(float const *)arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_pack_codes__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  size_t arg2 ;
+  int32_t *arg3 = (int32_t *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  int64_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "3"" of type '" "int32_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< int32_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveQuantizer const *)arg1)->pack_codes(arg2,(int32_t const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_pack_codes__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  size_t arg2 ;
+  int32_t *arg3 = (int32_t *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "3"" of type '" "int32_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< int32_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "AdditiveQuantizer_pack_codes" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveQuantizer const *)arg1)->pack_codes(arg2,(int32_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_pack_codes(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_pack_codes", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AdditiveQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_unsigned_char, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_AdditiveQuantizer_pack_codes__SWIG_2(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AdditiveQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_unsigned_char, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_AdditiveQuantizer_pack_codes__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AdditiveQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_unsigned_char, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_AdditiveQuantizer_pack_codes__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'AdditiveQuantizer_pack_codes'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::AdditiveQuantizer::pack_codes(size_t,int32_t const *,uint8_t *,int64_t,float const *) const\n"
+    "    faiss::AdditiveQuantizer::pack_codes(size_t,int32_t const *,uint8_t *,int64_t) const\n"
+    "    faiss::AdditiveQuantizer::pack_codes(size_t,int32_t const *,uint8_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_decode" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AdditiveQuantizer_decode" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveQuantizer_decode" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "AdditiveQuantizer_decode" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveQuantizer const *)arg1)->decode((uint8_t const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_decode_unpacked__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  int32_t *arg2 = (int32_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  int64_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_decode_unpacked" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AdditiveQuantizer_decode_unpacked" "', argument " "2"" of type '" "int32_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< int32_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveQuantizer_decode_unpacked" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "AdditiveQuantizer_decode_unpacked" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "AdditiveQuantizer_decode_unpacked" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveQuantizer const *)arg1)->decode_unpacked((int32_t const *)arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_decode_unpacked__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  int32_t *arg2 = (int32_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_decode_unpacked" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AdditiveQuantizer_decode_unpacked" "', argument " "2"" of type '" "int32_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< int32_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveQuantizer_decode_unpacked" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "AdditiveQuantizer_decode_unpacked" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveQuantizer const *)arg1)->decode_unpacked((int32_t const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_decode_unpacked(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_decode_unpacked", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AdditiveQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_int, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_AdditiveQuantizer_decode_unpacked__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AdditiveQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_int, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_AdditiveQuantizer_decode_unpacked__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'AdditiveQuantizer_decode_unpacked'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::AdditiveQuantizer::decode_unpacked(int32_t const *,float *,size_t,int64_t) const\n"
+    "    faiss::AdditiveQuantizer::decode_unpacked(int32_t const *,float *,size_t) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_search_type_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  faiss::AdditiveQuantizer::Search_type_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_search_type_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_search_type_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_search_type_set" "', argument " "2"" of type '" "faiss::AdditiveQuantizer::Search_type_t""'");
+  } 
+  arg2 = static_cast< faiss::AdditiveQuantizer::Search_type_t >(val2);
+  if (arg1) (arg1)->search_type = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_search_type_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AdditiveQuantizer::Search_type_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_search_type_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (faiss::AdditiveQuantizer::Search_type_t) ((arg1)->search_type);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_norm_min_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_norm_min_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_norm_min_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_norm_min_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->norm_min = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_norm_min_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_norm_min_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (float) ((arg1)->norm_min);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_norm_max_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_norm_max_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_norm_max_set" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_norm_max_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->norm_max = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_norm_max_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_norm_max_get" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  result = (float) ((arg1)->norm_max);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_decode_64bit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  faiss::AdditiveQuantizer::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_decode_64bit", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_decode_64bit" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_decode_64bit" "', argument " "2"" of type '" "faiss::AdditiveQuantizer::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::AdditiveQuantizer::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveQuantizer_decode_64bit" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveQuantizer const *)arg1)->decode_64bit(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_compute_LUT(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_compute_LUT", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_compute_LUT" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_compute_LUT" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveQuantizer_compute_LUT" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "AdditiveQuantizer_compute_LUT" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveQuantizer const *)arg1)->compute_LUT(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_knn_centroids_inner_product(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  faiss::AdditiveQuantizer::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::AdditiveQuantizer::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::AdditiveQuantizer::idx_t *arg6 = (faiss::AdditiveQuantizer::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_knn_centroids_inner_product", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_knn_centroids_inner_product" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_knn_centroids_inner_product" "', argument " "2"" of type '" "faiss::AdditiveQuantizer::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::AdditiveQuantizer::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveQuantizer_knn_centroids_inner_product" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "AdditiveQuantizer_knn_centroids_inner_product" "', argument " "4"" of type '" "faiss::AdditiveQuantizer::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::AdditiveQuantizer::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "AdditiveQuantizer_knn_centroids_inner_product" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "AdditiveQuantizer_knn_centroids_inner_product" "', argument " "6"" of type '" "faiss::AdditiveQuantizer::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::AdditiveQuantizer::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveQuantizer const *)arg1)->knn_centroids_inner_product(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_compute_centroid_norms(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_compute_centroid_norms", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_compute_centroid_norms" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AdditiveQuantizer_compute_centroid_norms" "', argument " "2"" of type '" "float *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveQuantizer const *)arg1)->compute_centroid_norms(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveQuantizer_knn_centroids_L2(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  faiss::AdditiveQuantizer::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::AdditiveQuantizer::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::AdditiveQuantizer::idx_t *arg6 = (faiss::AdditiveQuantizer::idx_t *) 0 ;
+  float *arg7 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveQuantizer_knn_centroids_L2", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveQuantizer_knn_centroids_L2" "', argument " "1"" of type '" "faiss::AdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveQuantizer_knn_centroids_L2" "', argument " "2"" of type '" "faiss::AdditiveQuantizer::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::AdditiveQuantizer::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveQuantizer_knn_centroids_L2" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "AdditiveQuantizer_knn_centroids_L2" "', argument " "4"" of type '" "faiss::AdditiveQuantizer::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::AdditiveQuantizer::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "AdditiveQuantizer_knn_centroids_L2" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "AdditiveQuantizer_knn_centroids_L2" "', argument " "6"" of type '" "faiss::AdditiveQuantizer::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::AdditiveQuantizer::idx_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "AdditiveQuantizer_knn_centroids_L2" "', argument " "7"" of type '" "float const *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveQuantizer const *)arg1)->knn_centroids_L2(arg2,(float const *)arg3,arg4,arg5,arg6,(float const *)arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_AdditiveQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_AdditiveQuantizer" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *AdditiveQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__AdditiveQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_train_type_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  faiss::ResidualQuantizer::train_type_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualQuantizer_train_type_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_train_type_set" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualQuantizer_train_type_set" "', argument " "2"" of type '" "faiss::ResidualQuantizer::train_type_t""'");
+  } 
+  arg2 = static_cast< faiss::ResidualQuantizer::train_type_t >(val2);
+  if (arg1) (arg1)->train_type = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_train_type_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ResidualQuantizer::train_type_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_train_type_get" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  result = (faiss::ResidualQuantizer::train_type_t) ((arg1)->train_type);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_max_beam_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualQuantizer_max_beam_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_max_beam_size_set" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualQuantizer_max_beam_size_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->max_beam_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_max_beam_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_max_beam_size_get" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  result = (int) ((arg1)->max_beam_size);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_use_beam_LUT_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualQuantizer_use_beam_LUT_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_use_beam_LUT_set" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualQuantizer_use_beam_LUT_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->use_beam_LUT = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_use_beam_LUT_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_use_beam_LUT_get" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  result = (int) ((arg1)->use_beam_LUT);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_max_mem_distances_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualQuantizer_max_mem_distances_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_max_mem_distances_set" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualQuantizer_max_mem_distances_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->max_mem_distances = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_max_mem_distances_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_max_mem_distances_get" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  result = (size_t) ((arg1)->max_mem_distances);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_cp_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  faiss::ProgressiveDimClusteringParameters *arg2 = (faiss::ProgressiveDimClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualQuantizer_cp_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_cp_set" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ProgressiveDimClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ResidualQuantizer_cp_set" "', argument " "2"" of type '" "faiss::ProgressiveDimClusteringParameters *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProgressiveDimClusteringParameters * >(argp2);
+  if (arg1) (arg1)->cp = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_cp_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ProgressiveDimClusteringParameters *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_cp_get" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  result = (faiss::ProgressiveDimClusteringParameters *)& ((arg1)->cp);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProgressiveDimClusteringParameters, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_assign_index_factory_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  faiss::ProgressiveDimIndexFactory *arg2 = (faiss::ProgressiveDimIndexFactory *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualQuantizer_assign_index_factory_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_assign_index_factory_set" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ProgressiveDimIndexFactory, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ResidualQuantizer_assign_index_factory_set" "', argument " "2"" of type '" "faiss::ProgressiveDimIndexFactory *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProgressiveDimIndexFactory * >(argp2);
+  if (arg1) (arg1)->assign_index_factory = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_assign_index_factory_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ProgressiveDimIndexFactory *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_assign_index_factory_get" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  result = (faiss::ProgressiveDimIndexFactory *) ((arg1)->assign_index_factory);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProgressiveDimIndexFactory, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ResidualQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  std::vector< size_t > *arg2 = 0 ;
+  faiss::AdditiveQuantizer::Search_type_t arg3 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::ResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ResidualQuantizer" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_unsigned_long_t,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_ResidualQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ResidualQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< size_t > * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_ResidualQuantizer" "', argument " "3"" of type '" "faiss::AdditiveQuantizer::Search_type_t""'");
+  } 
+  arg3 = static_cast< faiss::AdditiveQuantizer::Search_type_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ResidualQuantizer *)new faiss::ResidualQuantizer(arg1,(std::vector< size_t > const &)*arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ResidualQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  std::vector< size_t > *arg2 = 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::ResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ResidualQuantizer" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_unsigned_long_t,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_ResidualQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ResidualQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< size_t > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ResidualQuantizer *)new faiss::ResidualQuantizer(arg1,(std::vector< size_t > const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ResidualQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::AdditiveQuantizer::Search_type_t arg4 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::ResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ResidualQuantizer" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ResidualQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_ResidualQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_ResidualQuantizer" "', argument " "4"" of type '" "faiss::AdditiveQuantizer::Search_type_t""'");
+  } 
+  arg4 = static_cast< faiss::AdditiveQuantizer::Search_type_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ResidualQuantizer *)new faiss::ResidualQuantizer(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ResidualQuantizer__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::ResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ResidualQuantizer" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ResidualQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_ResidualQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ResidualQuantizer *)new faiss::ResidualQuantizer(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ResidualQuantizer__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ResidualQuantizer *)new faiss::ResidualQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ResidualQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_ResidualQuantizer", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_ResidualQuantizer__SWIG_4(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_std__vectorT_unsigned_long_t, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_ResidualQuantizer__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_std__vectorT_unsigned_long_t, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_ResidualQuantizer__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_ResidualQuantizer__SWIG_3(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_ResidualQuantizer__SWIG_2(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_ResidualQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ResidualQuantizer::ResidualQuantizer(size_t,std::vector< size_t > const &,faiss::AdditiveQuantizer::Search_type_t)\n"
+    "    faiss::ResidualQuantizer::ResidualQuantizer(size_t,std::vector< size_t > const &)\n"
+    "    faiss::ResidualQuantizer::ResidualQuantizer(size_t,size_t,size_t,faiss::AdditiveQuantizer::Search_type_t)\n"
+    "    faiss::ResidualQuantizer::ResidualQuantizer(size_t,size_t,size_t)\n"
+    "    faiss::ResidualQuantizer::ResidualQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualQuantizer_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_train" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualQuantizer_train" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ResidualQuantizer_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_compute_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualQuantizer_compute_codes", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_compute_codes" "', argument " "1"" of type '" "faiss::ResidualQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ResidualQuantizer_compute_codes" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ResidualQuantizer_compute_codes" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ResidualQuantizer_compute_codes" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ResidualQuantizer const *)arg1)->compute_codes((float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_refine_beam__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  int arg5 ;
+  int32_t *arg6 = (int32_t *) 0 ;
+  float *arg7 = (float *) 0 ;
+  float *arg8 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  
+  if ((nobjs < 8) || (nobjs > 8)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_refine_beam" "', argument " "1"" of type '" "faiss::ResidualQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualQuantizer_refine_beam" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ResidualQuantizer_refine_beam" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ResidualQuantizer_refine_beam" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ResidualQuantizer_refine_beam" "', argument " "5"" of type '" "int""'");
+  } 
+  arg5 = static_cast< int >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ResidualQuantizer_refine_beam" "', argument " "6"" of type '" "int32_t *""'"); 
+  }
+  arg6 = reinterpret_cast< int32_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "ResidualQuantizer_refine_beam" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "ResidualQuantizer_refine_beam" "', argument " "8"" of type '" "float *""'"); 
+  }
+  arg8 = reinterpret_cast< float * >(argp8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ResidualQuantizer const *)arg1)->refine_beam(arg2,arg3,(float const *)arg4,arg5,arg6,arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_refine_beam__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  int arg5 ;
+  int32_t *arg6 = (int32_t *) 0 ;
+  float *arg7 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_refine_beam" "', argument " "1"" of type '" "faiss::ResidualQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualQuantizer_refine_beam" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ResidualQuantizer_refine_beam" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ResidualQuantizer_refine_beam" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ResidualQuantizer_refine_beam" "', argument " "5"" of type '" "int""'");
+  } 
+  arg5 = static_cast< int >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ResidualQuantizer_refine_beam" "', argument " "6"" of type '" "int32_t *""'"); 
+  }
+  arg6 = reinterpret_cast< int32_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "ResidualQuantizer_refine_beam" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ResidualQuantizer const *)arg1)->refine_beam(arg2,arg3,(float const *)arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_refine_beam__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  int arg5 ;
+  int32_t *arg6 = (int32_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_refine_beam" "', argument " "1"" of type '" "faiss::ResidualQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualQuantizer_refine_beam" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ResidualQuantizer_refine_beam" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ResidualQuantizer_refine_beam" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ResidualQuantizer_refine_beam" "', argument " "5"" of type '" "int""'");
+  } 
+  arg5 = static_cast< int >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ResidualQuantizer_refine_beam" "', argument " "6"" of type '" "int32_t *""'"); 
+  }
+  arg6 = reinterpret_cast< int32_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ResidualQuantizer const *)arg1)->refine_beam(arg2,arg3,(float const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_refine_beam(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[9] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ResidualQuantizer_refine_beam", 0, 8, argv))) SWIG_fail;
+  --argc;
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ResidualQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_int, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_ResidualQuantizer_refine_beam__SWIG_2(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ResidualQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_int, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  return _wrap_ResidualQuantizer_refine_beam__SWIG_1(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 8) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ResidualQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_int, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_float, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    return _wrap_ResidualQuantizer_refine_beam__SWIG_0(self, argc, argv);
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ResidualQuantizer_refine_beam'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ResidualQuantizer::refine_beam(size_t,size_t,float const *,int,int32_t *,float *,float *) const\n"
+    "    faiss::ResidualQuantizer::refine_beam(size_t,size_t,float const *,int,int32_t *,float *) const\n"
+    "    faiss::ResidualQuantizer::refine_beam(size_t,size_t,float const *,int,int32_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_refine_beam_LUT__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  int arg5 ;
+  int32_t *arg6 = (int32_t *) 0 ;
+  float *arg7 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_refine_beam_LUT" "', argument " "1"" of type '" "faiss::ResidualQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualQuantizer_refine_beam_LUT" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ResidualQuantizer_refine_beam_LUT" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ResidualQuantizer_refine_beam_LUT" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ResidualQuantizer_refine_beam_LUT" "', argument " "5"" of type '" "int""'");
+  } 
+  arg5 = static_cast< int >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ResidualQuantizer_refine_beam_LUT" "', argument " "6"" of type '" "int32_t *""'"); 
+  }
+  arg6 = reinterpret_cast< int32_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "ResidualQuantizer_refine_beam_LUT" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ResidualQuantizer const *)arg1)->refine_beam_LUT(arg2,(float const *)arg3,(float const *)arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_refine_beam_LUT__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  int arg5 ;
+  int32_t *arg6 = (int32_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_refine_beam_LUT" "', argument " "1"" of type '" "faiss::ResidualQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualQuantizer_refine_beam_LUT" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ResidualQuantizer_refine_beam_LUT" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ResidualQuantizer_refine_beam_LUT" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ResidualQuantizer_refine_beam_LUT" "', argument " "5"" of type '" "int""'");
+  } 
+  arg5 = static_cast< int >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ResidualQuantizer_refine_beam_LUT" "', argument " "6"" of type '" "int32_t *""'"); 
+  }
+  arg6 = reinterpret_cast< int32_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ResidualQuantizer const *)arg1)->refine_beam_LUT(arg2,(float const *)arg3,(float const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_refine_beam_LUT(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ResidualQuantizer_refine_beam_LUT", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ResidualQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_int, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_ResidualQuantizer_refine_beam_LUT__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ResidualQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_int, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  return _wrap_ResidualQuantizer_refine_beam_LUT__SWIG_0(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ResidualQuantizer_refine_beam_LUT'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ResidualQuantizer::refine_beam_LUT(size_t,float const *,float const *,int,int32_t *,float *) const\n"
+    "    faiss::ResidualQuantizer::refine_beam_LUT(size_t,float const *,float const *,int,int32_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_memory_per_point__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  size_t result;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_memory_per_point" "', argument " "1"" of type '" "faiss::ResidualQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualQuantizer_memory_per_point" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::ResidualQuantizer const *)arg1)->memory_per_point(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_memory_per_point__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t result;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_memory_per_point" "', argument " "1"" of type '" "faiss::ResidualQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::ResidualQuantizer const *)arg1)->memory_per_point();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_memory_per_point(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ResidualQuantizer_memory_per_point", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ResidualQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_ResidualQuantizer_memory_per_point__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ResidualQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_ResidualQuantizer_memory_per_point__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ResidualQuantizer_memory_per_point'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ResidualQuantizer::memory_per_point(int) const\n"
+    "    faiss::ResidualQuantizer::memory_per_point() const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_compute_codebook_tables(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_compute_codebook_tables" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->compute_codebook_tables();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_codebook_cross_products_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualQuantizer_codebook_cross_products_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_codebook_cross_products_set" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ResidualQuantizer_codebook_cross_products_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->codebook_cross_products = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_codebook_cross_products_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_codebook_cross_products_get" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->codebook_cross_products);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_cent_norms_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualQuantizer_cent_norms_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_cent_norms_set" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ResidualQuantizer_cent_norms_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->cent_norms = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualQuantizer_cent_norms_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualQuantizer_cent_norms_get" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->cent_norms);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ResidualQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualQuantizer *arg1 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ResidualQuantizer" "', argument " "1"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualQuantizer * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ResidualQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ResidualQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ResidualQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_beam_search_encode_step__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  float *arg6 = (float *) 0 ;
+  size_t arg7 ;
+  int32_t *arg8 = (int32_t *) 0 ;
+  size_t arg9 ;
+  int32_t *arg10 = (int32_t *) 0 ;
+  float *arg11 = (float *) 0 ;
+  float *arg12 = (float *) 0 ;
+  faiss::Index *arg13 = (faiss::Index *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  size_t val7 ;
+  int ecode7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  size_t val9 ;
+  int ecode9 = 0 ;
+  void *argp10 = 0 ;
+  int res10 = 0 ;
+  void *argp11 = 0 ;
+  int res11 = 0 ;
+  void *argp12 = 0 ;
+  int res12 = 0 ;
+  void *argp13 = 0 ;
+  int res13 = 0 ;
+  
+  if ((nobjs < 13) || (nobjs > 13)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "beam_search_encode_step" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "beam_search_encode_step" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "beam_search_encode_step" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "beam_search_encode_step" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "beam_search_encode_step" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "beam_search_encode_step" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  ecode7 = SWIG_AsVal_size_t(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "beam_search_encode_step" "', argument " "7"" of type '" "size_t""'");
+  } 
+  arg7 = static_cast< size_t >(val7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "beam_search_encode_step" "', argument " "8"" of type '" "int32_t const *""'"); 
+  }
+  arg8 = reinterpret_cast< int32_t * >(argp8);
+  ecode9 = SWIG_AsVal_size_t(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "beam_search_encode_step" "', argument " "9"" of type '" "size_t""'");
+  } 
+  arg9 = static_cast< size_t >(val9);
+  res10 = SWIG_ConvertPtr(swig_obj[9], &argp10,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res10)) {
+    SWIG_exception_fail(SWIG_ArgError(res10), "in method '" "beam_search_encode_step" "', argument " "10"" of type '" "int32_t *""'"); 
+  }
+  arg10 = reinterpret_cast< int32_t * >(argp10);
+  res11 = SWIG_ConvertPtr(swig_obj[10], &argp11,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res11)) {
+    SWIG_exception_fail(SWIG_ArgError(res11), "in method '" "beam_search_encode_step" "', argument " "11"" of type '" "float *""'"); 
+  }
+  arg11 = reinterpret_cast< float * >(argp11);
+  res12 = SWIG_ConvertPtr(swig_obj[11], &argp12,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res12)) {
+    SWIG_exception_fail(SWIG_ArgError(res12), "in method '" "beam_search_encode_step" "', argument " "12"" of type '" "float *""'"); 
+  }
+  arg12 = reinterpret_cast< float * >(argp12);
+  res13 = SWIG_ConvertPtr(swig_obj[12], &argp13,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res13)) {
+    SWIG_exception_fail(SWIG_ArgError(res13), "in method '" "beam_search_encode_step" "', argument " "13"" of type '" "faiss::Index *""'"); 
+  }
+  arg13 = reinterpret_cast< faiss::Index * >(argp13);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::beam_search_encode_step(arg1,arg2,(float const *)arg3,arg4,arg5,(float const *)arg6,arg7,(int const *)arg8,arg9,arg10,arg11,arg12,arg13);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_beam_search_encode_step__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  float *arg6 = (float *) 0 ;
+  size_t arg7 ;
+  int32_t *arg8 = (int32_t *) 0 ;
+  size_t arg9 ;
+  int32_t *arg10 = (int32_t *) 0 ;
+  float *arg11 = (float *) 0 ;
+  float *arg12 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  size_t val7 ;
+  int ecode7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  size_t val9 ;
+  int ecode9 = 0 ;
+  void *argp10 = 0 ;
+  int res10 = 0 ;
+  void *argp11 = 0 ;
+  int res11 = 0 ;
+  void *argp12 = 0 ;
+  int res12 = 0 ;
+  
+  if ((nobjs < 12) || (nobjs > 12)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "beam_search_encode_step" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "beam_search_encode_step" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "beam_search_encode_step" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "beam_search_encode_step" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "beam_search_encode_step" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "beam_search_encode_step" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  ecode7 = SWIG_AsVal_size_t(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "beam_search_encode_step" "', argument " "7"" of type '" "size_t""'");
+  } 
+  arg7 = static_cast< size_t >(val7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "beam_search_encode_step" "', argument " "8"" of type '" "int32_t const *""'"); 
+  }
+  arg8 = reinterpret_cast< int32_t * >(argp8);
+  ecode9 = SWIG_AsVal_size_t(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "beam_search_encode_step" "', argument " "9"" of type '" "size_t""'");
+  } 
+  arg9 = static_cast< size_t >(val9);
+  res10 = SWIG_ConvertPtr(swig_obj[9], &argp10,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res10)) {
+    SWIG_exception_fail(SWIG_ArgError(res10), "in method '" "beam_search_encode_step" "', argument " "10"" of type '" "int32_t *""'"); 
+  }
+  arg10 = reinterpret_cast< int32_t * >(argp10);
+  res11 = SWIG_ConvertPtr(swig_obj[10], &argp11,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res11)) {
+    SWIG_exception_fail(SWIG_ArgError(res11), "in method '" "beam_search_encode_step" "', argument " "11"" of type '" "float *""'"); 
+  }
+  arg11 = reinterpret_cast< float * >(argp11);
+  res12 = SWIG_ConvertPtr(swig_obj[11], &argp12,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res12)) {
+    SWIG_exception_fail(SWIG_ArgError(res12), "in method '" "beam_search_encode_step" "', argument " "12"" of type '" "float *""'"); 
+  }
+  arg12 = reinterpret_cast< float * >(argp12);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::beam_search_encode_step(arg1,arg2,(float const *)arg3,arg4,arg5,(float const *)arg6,arg7,(int const *)arg8,arg9,arg10,arg11,arg12);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_beam_search_encode_step(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[14] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "beam_search_encode_step", 0, 13, argv))) SWIG_fail;
+  --argc;
+  if (argc == 12) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_size_t(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_int, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_size_t(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      void *vptr = 0;
+                      int res = SWIG_ConvertPtr(argv[9], &vptr, SWIGTYPE_p_int, 0);
+                      _v = SWIG_CheckState(res);
+                      if (_v) {
+                        void *vptr = 0;
+                        int res = SWIG_ConvertPtr(argv[10], &vptr, SWIGTYPE_p_float, 0);
+                        _v = SWIG_CheckState(res);
+                        if (_v) {
+                          void *vptr = 0;
+                          int res = SWIG_ConvertPtr(argv[11], &vptr, SWIGTYPE_p_float, 0);
+                          _v = SWIG_CheckState(res);
+                          if (_v) {
+                            return _wrap_beam_search_encode_step__SWIG_1(self, argc, argv);
+                          }
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 13) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_size_t(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_int, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_size_t(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      void *vptr = 0;
+                      int res = SWIG_ConvertPtr(argv[9], &vptr, SWIGTYPE_p_int, 0);
+                      _v = SWIG_CheckState(res);
+                      if (_v) {
+                        void *vptr = 0;
+                        int res = SWIG_ConvertPtr(argv[10], &vptr, SWIGTYPE_p_float, 0);
+                        _v = SWIG_CheckState(res);
+                        if (_v) {
+                          void *vptr = 0;
+                          int res = SWIG_ConvertPtr(argv[11], &vptr, SWIGTYPE_p_float, 0);
+                          _v = SWIG_CheckState(res);
+                          if (_v) {
+                            void *vptr = 0;
+                            int res = SWIG_ConvertPtr(argv[12], &vptr, SWIGTYPE_p_faiss__Index, 0);
+                            _v = SWIG_CheckState(res);
+                            if (_v) {
+                              return _wrap_beam_search_encode_step__SWIG_0(self, argc, argv);
+                            }
+                          }
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'beam_search_encode_step'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::beam_search_encode_step(size_t,size_t,float const *,size_t,size_t,float const *,size_t,int32_t const *,size_t,int32_t *,float *,float *,faiss::Index *)\n"
+    "    faiss::beam_search_encode_step(size_t,size_t,float const *,size_t,size_t,float const *,size_t,int32_t const *,size_t,int32_t *,float *,float *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_beam_search_encode_step_tab(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  size_t arg5 ;
+  uint64_t *arg6 = (uint64_t *) 0 ;
+  float *arg7 = (float *) 0 ;
+  size_t arg8 ;
+  float *arg9 = (float *) 0 ;
+  size_t arg10 ;
+  int32_t *arg11 = (int32_t *) 0 ;
+  float *arg12 = (float *) 0 ;
+  size_t arg13 ;
+  int32_t *arg14 = (int32_t *) 0 ;
+  float *arg15 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  size_t val8 ;
+  int ecode8 = 0 ;
+  void *argp9 = 0 ;
+  int res9 = 0 ;
+  size_t val10 ;
+  int ecode10 = 0 ;
+  void *argp11 = 0 ;
+  int res11 = 0 ;
+  void *argp12 = 0 ;
+  int res12 = 0 ;
+  size_t val13 ;
+  int ecode13 = 0 ;
+  void *argp14 = 0 ;
+  int res14 = 0 ;
+  void *argp15 = 0 ;
+  int res15 = 0 ;
+  PyObject *swig_obj[15] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "beam_search_encode_step_tab", 15, 15, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "beam_search_encode_step_tab" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "beam_search_encode_step_tab" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "beam_search_encode_step_tab" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "beam_search_encode_step_tab" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "beam_search_encode_step_tab" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "beam_search_encode_step_tab" "', argument " "6"" of type '" "uint64_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< uint64_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "beam_search_encode_step_tab" "', argument " "7"" of type '" "float const *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  ecode8 = SWIG_AsVal_size_t(swig_obj[7], &val8);
+  if (!SWIG_IsOK(ecode8)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode8), "in method '" "beam_search_encode_step_tab" "', argument " "8"" of type '" "size_t""'");
+  } 
+  arg8 = static_cast< size_t >(val8);
+  res9 = SWIG_ConvertPtr(swig_obj[8], &argp9,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res9)) {
+    SWIG_exception_fail(SWIG_ArgError(res9), "in method '" "beam_search_encode_step_tab" "', argument " "9"" of type '" "float const *""'"); 
+  }
+  arg9 = reinterpret_cast< float * >(argp9);
+  ecode10 = SWIG_AsVal_size_t(swig_obj[9], &val10);
+  if (!SWIG_IsOK(ecode10)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode10), "in method '" "beam_search_encode_step_tab" "', argument " "10"" of type '" "size_t""'");
+  } 
+  arg10 = static_cast< size_t >(val10);
+  res11 = SWIG_ConvertPtr(swig_obj[10], &argp11,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res11)) {
+    SWIG_exception_fail(SWIG_ArgError(res11), "in method '" "beam_search_encode_step_tab" "', argument " "11"" of type '" "int32_t const *""'"); 
+  }
+  arg11 = reinterpret_cast< int32_t * >(argp11);
+  res12 = SWIG_ConvertPtr(swig_obj[11], &argp12,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res12)) {
+    SWIG_exception_fail(SWIG_ArgError(res12), "in method '" "beam_search_encode_step_tab" "', argument " "12"" of type '" "float const *""'"); 
+  }
+  arg12 = reinterpret_cast< float * >(argp12);
+  ecode13 = SWIG_AsVal_size_t(swig_obj[12], &val13);
+  if (!SWIG_IsOK(ecode13)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode13), "in method '" "beam_search_encode_step_tab" "', argument " "13"" of type '" "size_t""'");
+  } 
+  arg13 = static_cast< size_t >(val13);
+  res14 = SWIG_ConvertPtr(swig_obj[13], &argp14,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res14)) {
+    SWIG_exception_fail(SWIG_ArgError(res14), "in method '" "beam_search_encode_step_tab" "', argument " "14"" of type '" "int32_t *""'"); 
+  }
+  arg14 = reinterpret_cast< int32_t * >(argp14);
+  res15 = SWIG_ConvertPtr(swig_obj[14], &argp15,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res15)) {
+    SWIG_exception_fail(SWIG_ArgError(res15), "in method '" "beam_search_encode_step_tab" "', argument " "15"" of type '" "float *""'"); 
+  }
+  arg15 = reinterpret_cast< float * >(argp15);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::beam_search_encode_step_tab(arg1,arg2,arg3,(float const *)arg4,arg5,(unsigned long const *)arg6,(float const *)arg7,arg8,(float const *)arg9,arg10,(int const *)arg11,(float const *)arg12,arg13,arg14,arg15);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_K_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_K_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_K_set" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LocalSearchQuantizer_K_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->K = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_K_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_K_get" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  result = (size_t) ((arg1)->K);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_train_iters_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_train_iters_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_train_iters_set" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LocalSearchQuantizer_train_iters_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->train_iters = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_train_iters_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_train_iters_get" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  result = (size_t) ((arg1)->train_iters);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_encode_ils_iters_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_encode_ils_iters_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_encode_ils_iters_set" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LocalSearchQuantizer_encode_ils_iters_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->encode_ils_iters = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_encode_ils_iters_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_encode_ils_iters_get" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  result = (size_t) ((arg1)->encode_ils_iters);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_train_ils_iters_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_train_ils_iters_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_train_ils_iters_set" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LocalSearchQuantizer_train_ils_iters_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->train_ils_iters = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_train_ils_iters_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_train_ils_iters_get" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  result = (size_t) ((arg1)->train_ils_iters);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_icm_iters_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_icm_iters_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_icm_iters_set" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LocalSearchQuantizer_icm_iters_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->icm_iters = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_icm_iters_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_icm_iters_get" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  result = (size_t) ((arg1)->icm_iters);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_p_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_p_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_p_set" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LocalSearchQuantizer_p_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->p = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_p_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_p_get" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  result = (float) ((arg1)->p);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_lambd_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_lambd_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_lambd_set" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LocalSearchQuantizer_lambd_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->lambd = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_lambd_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_lambd_get" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  result = (float) ((arg1)->lambd);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_chunk_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_chunk_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_chunk_size_set" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LocalSearchQuantizer_chunk_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->chunk_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_chunk_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_chunk_size_get" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  result = (size_t) ((arg1)->chunk_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_random_seed_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_random_seed_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_random_seed_set" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LocalSearchQuantizer_random_seed_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->random_seed = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_random_seed_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_random_seed_get" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  result = (int) ((arg1)->random_seed);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_nperts_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_nperts_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_nperts_set" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LocalSearchQuantizer_nperts_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nperts = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_nperts_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_nperts_get" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  result = (size_t) ((arg1)->nperts);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_icm_encoder_factory_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  faiss::lsq::IcmEncoderFactory *arg2 = (faiss::lsq::IcmEncoderFactory *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_icm_encoder_factory_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_icm_encoder_factory_set" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__lsq__IcmEncoderFactory, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LocalSearchQuantizer_icm_encoder_factory_set" "', argument " "2"" of type '" "faiss::lsq::IcmEncoderFactory *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::lsq::IcmEncoderFactory * >(argp2);
+  if (arg1) (arg1)->icm_encoder_factory = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_icm_encoder_factory_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::lsq::IcmEncoderFactory *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_icm_encoder_factory_get" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  result = (faiss::lsq::IcmEncoderFactory *) ((arg1)->icm_encoder_factory);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__lsq__IcmEncoderFactory, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_update_codebooks_with_double_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_update_codebooks_with_double_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_update_codebooks_with_double_set" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LocalSearchQuantizer_update_codebooks_with_double_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->update_codebooks_with_double = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_update_codebooks_with_double_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_update_codebooks_with_double_get" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  result = (bool) ((arg1)->update_codebooks_with_double);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LocalSearchQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::AdditiveQuantizer::Search_type_t arg4 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::LocalSearchQuantizer *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_LocalSearchQuantizer" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_LocalSearchQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_LocalSearchQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_LocalSearchQuantizer" "', argument " "4"" of type '" "faiss::AdditiveQuantizer::Search_type_t""'");
+  } 
+  arg4 = static_cast< faiss::AdditiveQuantizer::Search_type_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::LocalSearchQuantizer *)new faiss::LocalSearchQuantizer(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LocalSearchQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LocalSearchQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::LocalSearchQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_LocalSearchQuantizer" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_LocalSearchQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_LocalSearchQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::LocalSearchQuantizer *)new faiss::LocalSearchQuantizer(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LocalSearchQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LocalSearchQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::LocalSearchQuantizer *)new faiss::LocalSearchQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LocalSearchQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LocalSearchQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_LocalSearchQuantizer", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_LocalSearchQuantizer__SWIG_2(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_LocalSearchQuantizer__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_LocalSearchQuantizer__SWIG_0(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_LocalSearchQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::LocalSearchQuantizer::LocalSearchQuantizer(size_t,size_t,size_t,faiss::AdditiveQuantizer::Search_type_t)\n"
+    "    faiss::LocalSearchQuantizer::LocalSearchQuantizer(size_t,size_t,size_t)\n"
+    "    faiss::LocalSearchQuantizer::LocalSearchQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_LocalSearchQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_LocalSearchQuantizer" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_train" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LocalSearchQuantizer_train" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LocalSearchQuantizer_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_compute_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_compute_codes", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_compute_codes" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LocalSearchQuantizer_compute_codes" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LocalSearchQuantizer_compute_codes" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "LocalSearchQuantizer_compute_codes" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::LocalSearchQuantizer const *)arg1)->compute_codes((float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_update_codebooks(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  int32_t *arg3 = (int32_t *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_update_codebooks", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_update_codebooks" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LocalSearchQuantizer_update_codebooks" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LocalSearchQuantizer_update_codebooks" "', argument " "3"" of type '" "int32_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< int32_t * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "LocalSearchQuantizer_update_codebooks" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->update_codebooks((float const *)arg2,(int32_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_icm_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  int32_t *arg2 = (int32_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  std::mt19937 *arg6 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_icm_encode", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_icm_encode" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LocalSearchQuantizer_icm_encode" "', argument " "2"" of type '" "int32_t *""'"); 
+  }
+  arg2 = reinterpret_cast< int32_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LocalSearchQuantizer_icm_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "LocalSearchQuantizer_icm_encode" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "LocalSearchQuantizer_icm_encode" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6, SWIGTYPE_p_std__mt19937,  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "LocalSearchQuantizer_icm_encode" "', argument " "6"" of type '" "std::mt19937 &""'"); 
+  }
+  if (!argp6) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "LocalSearchQuantizer_icm_encode" "', argument " "6"" of type '" "std::mt19937 &""'"); 
+  }
+  arg6 = reinterpret_cast< std::mt19937 * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::LocalSearchQuantizer const *)arg1)->icm_encode(arg2,(float const *)arg3,arg4,arg5,*arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_icm_encode_impl(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  int32_t *arg2 = (int32_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  std::mt19937 *arg5 = 0 ;
+  size_t arg6 ;
+  size_t arg7 ;
+  bool arg8 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  size_t val7 ;
+  int ecode7 = 0 ;
+  bool val8 ;
+  int ecode8 = 0 ;
+  PyObject *swig_obj[8] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_icm_encode_impl", 8, 8, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_icm_encode_impl" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LocalSearchQuantizer_icm_encode_impl" "', argument " "2"" of type '" "int32_t *""'"); 
+  }
+  arg2 = reinterpret_cast< int32_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LocalSearchQuantizer_icm_encode_impl" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "LocalSearchQuantizer_icm_encode_impl" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5, SWIGTYPE_p_std__mt19937,  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "LocalSearchQuantizer_icm_encode_impl" "', argument " "5"" of type '" "std::mt19937 &""'"); 
+  }
+  if (!argp5) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "LocalSearchQuantizer_icm_encode_impl" "', argument " "5"" of type '" "std::mt19937 &""'"); 
+  }
+  arg5 = reinterpret_cast< std::mt19937 * >(argp5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "LocalSearchQuantizer_icm_encode_impl" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  ecode7 = SWIG_AsVal_size_t(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "LocalSearchQuantizer_icm_encode_impl" "', argument " "7"" of type '" "size_t""'");
+  } 
+  arg7 = static_cast< size_t >(val7);
+  ecode8 = SWIG_AsVal_bool(swig_obj[7], &val8);
+  if (!SWIG_IsOK(ecode8)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode8), "in method '" "LocalSearchQuantizer_icm_encode_impl" "', argument " "8"" of type '" "bool""'");
+  } 
+  arg8 = static_cast< bool >(val8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::LocalSearchQuantizer const *)arg1)->icm_encode_impl(arg2,(float const *)arg3,(float const *)arg4,*arg5,arg6,arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_icm_encode_step(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  int32_t *arg2 = (int32_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  size_t arg5 ;
+  size_t arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_icm_encode_step", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_icm_encode_step" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LocalSearchQuantizer_icm_encode_step" "', argument " "2"" of type '" "int32_t *""'"); 
+  }
+  arg2 = reinterpret_cast< int32_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LocalSearchQuantizer_icm_encode_step" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "LocalSearchQuantizer_icm_encode_step" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "LocalSearchQuantizer_icm_encode_step" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "LocalSearchQuantizer_icm_encode_step" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::LocalSearchQuantizer const *)arg1)->icm_encode_step(arg2,(float const *)arg3,(float const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_perturb_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  int32_t *arg2 = (int32_t *) 0 ;
+  size_t arg3 ;
+  std::mt19937 *arg4 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_perturb_codes", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_perturb_codes" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LocalSearchQuantizer_perturb_codes" "', argument " "2"" of type '" "int32_t *""'"); 
+  }
+  arg2 = reinterpret_cast< int32_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "LocalSearchQuantizer_perturb_codes" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_std__mt19937,  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "LocalSearchQuantizer_perturb_codes" "', argument " "4"" of type '" "std::mt19937 &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "LocalSearchQuantizer_perturb_codes" "', argument " "4"" of type '" "std::mt19937 &""'"); 
+  }
+  arg4 = reinterpret_cast< std::mt19937 * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::LocalSearchQuantizer const *)arg1)->perturb_codes(arg2,arg3,*arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_perturb_codebooks(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  float arg2 ;
+  std::vector< float > *arg3 = 0 ;
+  std::mt19937 *arg4 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_perturb_codebooks", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_perturb_codebooks" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LocalSearchQuantizer_perturb_codebooks" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_std__vectorT_float_t,  0  | 0);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LocalSearchQuantizer_perturb_codebooks" "', argument " "3"" of type '" "std::vector< float > const &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "LocalSearchQuantizer_perturb_codebooks" "', argument " "3"" of type '" "std::vector< float > const &""'"); 
+  }
+  arg3 = reinterpret_cast< std::vector< float > * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_std__mt19937,  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "LocalSearchQuantizer_perturb_codebooks" "', argument " "4"" of type '" "std::mt19937 &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "LocalSearchQuantizer_perturb_codebooks" "', argument " "4"" of type '" "std::mt19937 &""'"); 
+  }
+  arg4 = reinterpret_cast< std::mt19937 * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->perturb_codebooks(arg2,(std::vector< float > const &)*arg3,*arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_compute_binary_terms(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_compute_binary_terms", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_compute_binary_terms" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LocalSearchQuantizer_compute_binary_terms" "', argument " "2"" of type '" "float *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::LocalSearchQuantizer const *)arg1)->compute_binary_terms(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_compute_unary_terms(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_compute_unary_terms", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_compute_unary_terms" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LocalSearchQuantizer_compute_unary_terms" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LocalSearchQuantizer_compute_unary_terms" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "LocalSearchQuantizer_compute_unary_terms" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::LocalSearchQuantizer const *)arg1)->compute_unary_terms((float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_evaluate__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  int32_t *arg2 = (int32_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  float result;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_evaluate" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LocalSearchQuantizer_evaluate" "', argument " "2"" of type '" "int32_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< int32_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LocalSearchQuantizer_evaluate" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "LocalSearchQuantizer_evaluate" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "LocalSearchQuantizer_evaluate" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)((faiss::LocalSearchQuantizer const *)arg1)->evaluate((int32_t const *)arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_evaluate__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  int32_t *arg2 = (int32_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  float result;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchQuantizer_evaluate" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LocalSearchQuantizer_evaluate" "', argument " "2"" of type '" "int32_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< int32_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LocalSearchQuantizer_evaluate" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "LocalSearchQuantizer_evaluate" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)((faiss::LocalSearchQuantizer const *)arg1)->evaluate((int32_t const *)arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchQuantizer_evaluate(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "LocalSearchQuantizer_evaluate", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__LocalSearchQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_int, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_LocalSearchQuantizer_evaluate__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__LocalSearchQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_int, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_LocalSearchQuantizer_evaluate__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'LocalSearchQuantizer_evaluate'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::LocalSearchQuantizer::evaluate(int32_t const *,float const *,size_t,float *) const\n"
+    "    faiss::LocalSearchQuantizer::evaluate(int32_t const *,float const *,size_t) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *LocalSearchQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__LocalSearchQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *LocalSearchQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IcmEncoder_binaries_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::IcmEncoder *arg1 = (faiss::lsq::IcmEncoder *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IcmEncoder_binaries_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__IcmEncoder, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IcmEncoder_binaries_set" "', argument " "1"" of type '" "faiss::lsq::IcmEncoder *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::IcmEncoder * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IcmEncoder_binaries_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->binaries = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IcmEncoder_binaries_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::IcmEncoder *arg1 = (faiss::lsq::IcmEncoder *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__IcmEncoder, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IcmEncoder_binaries_get" "', argument " "1"" of type '" "faiss::lsq::IcmEncoder *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::IcmEncoder * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->binaries);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IcmEncoder_verbose_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::IcmEncoder *arg1 = (faiss::lsq::IcmEncoder *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IcmEncoder_verbose_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__IcmEncoder, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IcmEncoder_verbose_set" "', argument " "1"" of type '" "faiss::lsq::IcmEncoder *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::IcmEncoder * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IcmEncoder_verbose_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->verbose = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IcmEncoder_verbose_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::IcmEncoder *arg1 = (faiss::lsq::IcmEncoder *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__IcmEncoder, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IcmEncoder_verbose_get" "', argument " "1"" of type '" "faiss::lsq::IcmEncoder *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::IcmEncoder * >(argp1);
+  result = (bool) ((arg1)->verbose);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IcmEncoder_lsq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::IcmEncoder *arg1 = (faiss::lsq::IcmEncoder *) 0 ;
+  faiss::LocalSearchQuantizer *arg2 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IcmEncoder_lsq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__IcmEncoder, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IcmEncoder_lsq_set" "', argument " "1"" of type '" "faiss::lsq::IcmEncoder *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::IcmEncoder * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__LocalSearchQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IcmEncoder_lsq_set" "', argument " "2"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp2);
+  if (arg1) (arg1)->lsq = (faiss::LocalSearchQuantizer const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IcmEncoder_lsq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::IcmEncoder *arg1 = (faiss::lsq::IcmEncoder *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::LocalSearchQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__IcmEncoder, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IcmEncoder_lsq_get" "', argument " "1"" of type '" "faiss::lsq::IcmEncoder *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::IcmEncoder * >(argp1);
+  result = (faiss::LocalSearchQuantizer *) ((arg1)->lsq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IcmEncoder(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::lsq::IcmEncoder *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IcmEncoder" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::lsq::IcmEncoder *)new faiss::lsq::IcmEncoder((faiss::LocalSearchQuantizer const *)arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__lsq__IcmEncoder, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IcmEncoder(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::IcmEncoder *arg1 = (faiss::lsq::IcmEncoder *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__IcmEncoder, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IcmEncoder" "', argument " "1"" of type '" "faiss::lsq::IcmEncoder *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::IcmEncoder * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IcmEncoder_set_binary_term(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::IcmEncoder *arg1 = (faiss::lsq::IcmEncoder *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__IcmEncoder, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IcmEncoder_set_binary_term" "', argument " "1"" of type '" "faiss::lsq::IcmEncoder *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::IcmEncoder * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_binary_term();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IcmEncoder_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::IcmEncoder *arg1 = (faiss::lsq::IcmEncoder *) 0 ;
+  int32_t *arg2 = (int32_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  std::mt19937 *arg4 = 0 ;
+  size_t arg5 ;
+  size_t arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IcmEncoder_encode", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__IcmEncoder, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IcmEncoder_encode" "', argument " "1"" of type '" "faiss::lsq::IcmEncoder const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::IcmEncoder * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IcmEncoder_encode" "', argument " "2"" of type '" "int32_t *""'"); 
+  }
+  arg2 = reinterpret_cast< int32_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IcmEncoder_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_std__mt19937,  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IcmEncoder_encode" "', argument " "4"" of type '" "std::mt19937 &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IcmEncoder_encode" "', argument " "4"" of type '" "std::mt19937 &""'"); 
+  }
+  arg4 = reinterpret_cast< std::mt19937 * >(argp4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "IcmEncoder_encode" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "IcmEncoder_encode" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::lsq::IcmEncoder const *)arg1)->encode(arg2,(float const *)arg3,*arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IcmEncoder_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__lsq__IcmEncoder, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IcmEncoder_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IcmEncoderFactory_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::IcmEncoderFactory *arg1 = (faiss::lsq::IcmEncoderFactory *) 0 ;
+  faiss::LocalSearchQuantizer *arg2 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::lsq::IcmEncoder *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IcmEncoderFactory_get", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__IcmEncoderFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IcmEncoderFactory_get" "', argument " "1"" of type '" "faiss::lsq::IcmEncoderFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::IcmEncoderFactory * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IcmEncoderFactory_get" "', argument " "2"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::lsq::IcmEncoder *)(arg1)->get((faiss::LocalSearchQuantizer const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__lsq__IcmEncoder, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IcmEncoderFactory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::IcmEncoderFactory *arg1 = (faiss::lsq::IcmEncoderFactory *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__IcmEncoderFactory, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IcmEncoderFactory" "', argument " "1"" of type '" "faiss::lsq::IcmEncoderFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::IcmEncoderFactory * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IcmEncoderFactory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::IcmEncoderFactory *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_IcmEncoderFactory", 0, 0, 0)) SWIG_fail;
+  result = (faiss::lsq::IcmEncoderFactory *)new faiss::lsq::IcmEncoderFactory();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__lsq__IcmEncoderFactory, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IcmEncoderFactory_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__lsq__IcmEncoderFactory, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IcmEncoderFactory_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_LSQTimer_t_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimer *arg1 = (faiss::lsq::LSQTimer *) 0 ;
+  std::unordered_map< std::string,double > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LSQTimer_t_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimer_t_set" "', argument " "1"" of type '" "faiss::lsq::LSQTimer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimer * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__unordered_mapT_std__string_double_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LSQTimer_t_set" "', argument " "2"" of type '" "std::unordered_map< std::string,double >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "LSQTimer_t_set" "', argument " "2"" of type '" "std::unordered_map< std::string,double >""'");
+    } else {
+      std::unordered_map< std::string,double > * temp = reinterpret_cast< std::unordered_map< std::string,double > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  if (arg1) (arg1)->t = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LSQTimer_t_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimer *arg1 = (faiss::lsq::LSQTimer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::unordered_map< std::string,double > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimer_t_get" "', argument " "1"" of type '" "faiss::lsq::LSQTimer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimer * >(argp1);
+  result =  ((arg1)->t);
+  resultobj = SWIG_NewPointerObj((new std::unordered_map< std::string,double >(static_cast< const std::unordered_map< std::string,double >& >(result))), SWIGTYPE_p_std__unordered_mapT_std__string_double_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LSQTimer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimer *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_LSQTimer", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::lsq::LSQTimer *)new faiss::lsq::LSQTimer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__lsq__LSQTimer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LSQTimer_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimer *arg1 = (faiss::lsq::LSQTimer *) 0 ;
+  std::string *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 = SWIG_OLDOBJ ;
+  PyObject *swig_obj[2] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LSQTimer_get", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimer_get" "', argument " "1"" of type '" "faiss::lsq::LSQTimer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimer * >(argp1);
+  {
+    std::string *ptr = (std::string *)0;
+    res2 = SWIG_AsPtr_std_string(swig_obj[1], &ptr);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LSQTimer_get" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "LSQTimer_get" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    arg2 = ptr;
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)(arg1)->get((std::string const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LSQTimer_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimer *arg1 = (faiss::lsq::LSQTimer *) 0 ;
+  std::string *arg2 = 0 ;
+  double arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 = SWIG_OLDOBJ ;
+  double val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LSQTimer_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimer_add" "', argument " "1"" of type '" "faiss::lsq::LSQTimer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimer * >(argp1);
+  {
+    std::string *ptr = (std::string *)0;
+    res2 = SWIG_AsPtr_std_string(swig_obj[1], &ptr);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LSQTimer_add" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "LSQTimer_add" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    arg2 = ptr;
+  }
+  ecode3 = SWIG_AsVal_double(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "LSQTimer_add" "', argument " "3"" of type '" "double""'");
+  } 
+  arg3 = static_cast< double >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add((std::string const &)*arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LSQTimer_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimer *arg1 = (faiss::lsq::LSQTimer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimer_reset" "', argument " "1"" of type '" "faiss::lsq::LSQTimer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_LSQTimer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimer *arg1 = (faiss::lsq::LSQTimer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_LSQTimer" "', argument " "1"" of type '" "faiss::lsq::LSQTimer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimer * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *LSQTimer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__lsq__LSQTimer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *LSQTimer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_LSQTimerScope_t0_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimerScope *arg1 = (faiss::lsq::LSQTimerScope *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LSQTimerScope_t0_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimerScope, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimerScope_t0_set" "', argument " "1"" of type '" "faiss::lsq::LSQTimerScope *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimerScope * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LSQTimerScope_t0_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->t0 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LSQTimerScope_t0_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimerScope *arg1 = (faiss::lsq::LSQTimerScope *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimerScope, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimerScope_t0_get" "', argument " "1"" of type '" "faiss::lsq::LSQTimerScope *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimerScope * >(argp1);
+  result = (double) ((arg1)->t0);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LSQTimerScope_timer_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimerScope *arg1 = (faiss::lsq::LSQTimerScope *) 0 ;
+  faiss::lsq::LSQTimer *arg2 = (faiss::lsq::LSQTimer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LSQTimerScope_timer_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimerScope, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimerScope_timer_set" "', argument " "1"" of type '" "faiss::lsq::LSQTimerScope *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimerScope * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__lsq__LSQTimer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LSQTimerScope_timer_set" "', argument " "2"" of type '" "faiss::lsq::LSQTimer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::lsq::LSQTimer * >(argp2);
+  if (arg1) (arg1)->timer = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LSQTimerScope_timer_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimerScope *arg1 = (faiss::lsq::LSQTimerScope *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::lsq::LSQTimer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimerScope, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimerScope_timer_get" "', argument " "1"" of type '" "faiss::lsq::LSQTimerScope *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimerScope * >(argp1);
+  result = (faiss::lsq::LSQTimer *) ((arg1)->timer);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__lsq__LSQTimer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LSQTimerScope_name_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimerScope *arg1 = (faiss::lsq::LSQTimerScope *) 0 ;
+  std::string *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 = SWIG_OLDOBJ ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LSQTimerScope_name_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimerScope, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimerScope_name_set" "', argument " "1"" of type '" "faiss::lsq::LSQTimerScope *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimerScope * >(argp1);
+  {
+    std::string *ptr = (std::string *)0;
+    res2 = SWIG_AsPtr_std_string(swig_obj[1], &ptr);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LSQTimerScope_name_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "LSQTimerScope_name_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    arg2 = ptr;
+  }
+  if (arg1) (arg1)->name = *arg2;
+  resultobj = SWIG_Py_Void();
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LSQTimerScope_name_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimerScope *arg1 = (faiss::lsq::LSQTimerScope *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimerScope, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimerScope_name_get" "', argument " "1"" of type '" "faiss::lsq::LSQTimerScope *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimerScope * >(argp1);
+  result = (std::string *) & ((arg1)->name);
+  resultobj = SWIG_From_std_string(static_cast< std::string >(*result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LSQTimerScope_finished_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimerScope *arg1 = (faiss::lsq::LSQTimerScope *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LSQTimerScope_finished_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimerScope, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimerScope_finished_set" "', argument " "1"" of type '" "faiss::lsq::LSQTimerScope *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimerScope * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LSQTimerScope_finished_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->finished = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LSQTimerScope_finished_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimerScope *arg1 = (faiss::lsq::LSQTimerScope *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimerScope, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimerScope_finished_get" "', argument " "1"" of type '" "faiss::lsq::LSQTimerScope *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimerScope * >(argp1);
+  result = (bool) ((arg1)->finished);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LSQTimerScope(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimer *arg1 = (faiss::lsq::LSQTimer *) 0 ;
+  std::string arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::lsq::LSQTimerScope *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_LSQTimerScope", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_LSQTimerScope" "', argument " "1"" of type '" "faiss::lsq::LSQTimer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimer * >(argp1);
+  {
+    std::string *ptr = (std::string *)0;
+    int res = SWIG_AsPtr_std_string(swig_obj[1], &ptr);
+    if (!SWIG_IsOK(res) || !ptr) {
+      SWIG_exception_fail(SWIG_ArgError((ptr ? res : SWIG_TypeError)), "in method '" "new_LSQTimerScope" "', argument " "2"" of type '" "std::string""'"); 
+    }
+    arg2 = *ptr;
+    if (SWIG_IsNewObj(res)) delete ptr;
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::lsq::LSQTimerScope *)new faiss::lsq::LSQTimerScope(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__lsq__LSQTimerScope, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LSQTimerScope_finish(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimerScope *arg1 = (faiss::lsq::LSQTimerScope *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimerScope, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LSQTimerScope_finish" "', argument " "1"" of type '" "faiss::lsq::LSQTimerScope *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimerScope * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->finish();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_LSQTimerScope(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::lsq::LSQTimerScope *arg1 = (faiss::lsq::LSQTimerScope *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__lsq__LSQTimerScope, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_LSQTimerScope" "', argument " "1"" of type '" "faiss::lsq::LSQTimerScope *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::lsq::LSQTimerScope * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *LSQTimerScope_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__lsq__LSQTimerScope, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *LSQTimerScope_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_VectorTransform_d_in_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorTransform_d_in_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransform_d_in_set" "', argument " "1"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VectorTransform_d_in_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->d_in = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransform_d_in_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransform_d_in_get" "', argument " "1"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  result = (int) ((arg1)->d_in);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransform_d_out_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorTransform_d_out_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransform_d_out_set" "', argument " "1"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VectorTransform_d_out_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->d_out = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransform_d_out_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransform_d_out_get" "', argument " "1"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  result = (int) ((arg1)->d_out);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransform_is_trained_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorTransform_is_trained_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransform_is_trained_set" "', argument " "1"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VectorTransform_is_trained_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->is_trained = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransform_is_trained_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransform_is_trained_get" "', argument " "1"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  result = (bool) ((arg1)->is_trained);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransform_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorTransform_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransform_train" "', argument " "1"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VectorTransform_train" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "VectorTransform_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransform_apply(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  float *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorTransform_apply", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransform_apply" "', argument " "1"" of type '" "faiss::VectorTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VectorTransform_apply" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "VectorTransform_apply" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float *)((faiss::VectorTransform const *)arg1)->apply(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransform_apply_noalloc(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorTransform_apply_noalloc", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransform_apply_noalloc" "', argument " "1"" of type '" "faiss::VectorTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VectorTransform_apply_noalloc" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "VectorTransform_apply_noalloc" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "VectorTransform_apply_noalloc" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::VectorTransform const *)arg1)->apply_noalloc(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorTransform_reverse_transform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorTransform_reverse_transform", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorTransform_reverse_transform" "', argument " "1"" of type '" "faiss::VectorTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VectorTransform_reverse_transform" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "VectorTransform_reverse_transform" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "VectorTransform_reverse_transform" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::VectorTransform const *)arg1)->reverse_transform(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_VectorTransform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_VectorTransform" "', argument " "1"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *VectorTransform_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__VectorTransform, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_LinearTransform_have_bias_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LinearTransform_have_bias_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_have_bias_set" "', argument " "1"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LinearTransform_have_bias_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->have_bias = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_have_bias_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_have_bias_get" "', argument " "1"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  result = (bool) ((arg1)->have_bias);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_is_orthonormal_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LinearTransform_is_orthonormal_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_is_orthonormal_set" "', argument " "1"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LinearTransform_is_orthonormal_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->is_orthonormal = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_is_orthonormal_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_is_orthonormal_get" "', argument " "1"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  result = (bool) ((arg1)->is_orthonormal);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_A_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LinearTransform_A_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_A_set" "', argument " "1"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LinearTransform_A_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->A = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_A_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_A_get" "', argument " "1"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->A);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_b_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LinearTransform_b_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_b_set" "', argument " "1"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LinearTransform_b_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->b = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_b_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_b_get" "', argument " "1"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->b);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LinearTransform__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  bool arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  faiss::LinearTransform *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_LinearTransform" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_LinearTransform" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_LinearTransform" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::LinearTransform *)new faiss::LinearTransform(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LinearTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LinearTransform__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::LinearTransform *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_LinearTransform" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_LinearTransform" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::LinearTransform *)new faiss::LinearTransform(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LinearTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LinearTransform__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::LinearTransform *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_LinearTransform" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::LinearTransform *)new faiss::LinearTransform(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LinearTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LinearTransform__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::LinearTransform *)new faiss::LinearTransform();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LinearTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LinearTransform(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_LinearTransform", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_LinearTransform__SWIG_3(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_LinearTransform__SWIG_2(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_LinearTransform__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_LinearTransform__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_LinearTransform'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::LinearTransform::LinearTransform(int,int,bool)\n"
+    "    faiss::LinearTransform::LinearTransform(int,int)\n"
+    "    faiss::LinearTransform::LinearTransform(int)\n"
+    "    faiss::LinearTransform::LinearTransform()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_apply_noalloc(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LinearTransform_apply_noalloc", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_apply_noalloc" "', argument " "1"" of type '" "faiss::LinearTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LinearTransform_apply_noalloc" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LinearTransform_apply_noalloc" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "LinearTransform_apply_noalloc" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::LinearTransform const *)arg1)->apply_noalloc(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_transform_transpose(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LinearTransform_transform_transpose", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_transform_transpose" "', argument " "1"" of type '" "faiss::LinearTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LinearTransform_transform_transpose" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LinearTransform_transform_transpose" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "LinearTransform_transform_transpose" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::LinearTransform const *)arg1)->transform_transpose(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_reverse_transform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LinearTransform_reverse_transform", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_reverse_transform" "', argument " "1"" of type '" "faiss::LinearTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LinearTransform_reverse_transform" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LinearTransform_reverse_transform" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "LinearTransform_reverse_transform" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::LinearTransform const *)arg1)->reverse_transform(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_set_is_orthonormal(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_set_is_orthonormal" "', argument " "1"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_is_orthonormal();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_verbose_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LinearTransform_verbose_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_verbose_set" "', argument " "1"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "LinearTransform_verbose_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->verbose = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_verbose_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_verbose_get" "', argument " "1"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  result = (bool) ((arg1)->verbose);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LinearTransform_print_if_verbose(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  char *arg2 = (char *) 0 ;
+  std::vector< double > *arg3 = 0 ;
+  int arg4 ;
+  int arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  char *buf2 = 0 ;
+  int alloc2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LinearTransform_print_if_verbose", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LinearTransform_print_if_verbose" "', argument " "1"" of type '" "faiss::LinearTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  res2 = SWIG_AsCharPtrAndSize(swig_obj[1], &buf2, NULL, &alloc2);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LinearTransform_print_if_verbose" "', argument " "2"" of type '" "char const *""'");
+  }
+  arg2 = reinterpret_cast< char * >(buf2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_std__vectorT_double_t,  0  | 0);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "LinearTransform_print_if_verbose" "', argument " "3"" of type '" "std::vector< double > const &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "LinearTransform_print_if_verbose" "', argument " "3"" of type '" "std::vector< double > const &""'"); 
+  }
+  arg3 = reinterpret_cast< std::vector< double > * >(argp3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "LinearTransform_print_if_verbose" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "LinearTransform_print_if_verbose" "', argument " "5"" of type '" "int""'");
+  } 
+  arg5 = static_cast< int >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::LinearTransform const *)arg1)->print_if_verbose((char const *)arg2,(std::vector< double > const &)*arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return resultobj;
+fail:
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_LinearTransform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LinearTransform *arg1 = (faiss::LinearTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LinearTransform, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_LinearTransform" "', argument " "1"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LinearTransform * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *LinearTransform_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__LinearTransform, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *LinearTransform_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_RandomRotationMatrix__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::RandomRotationMatrix *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_RandomRotationMatrix" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_RandomRotationMatrix" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::RandomRotationMatrix *)new faiss::RandomRotationMatrix(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RandomRotationMatrix, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RandomRotationMatrix_init(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RandomRotationMatrix *arg1 = (faiss::RandomRotationMatrix *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RandomRotationMatrix_init", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RandomRotationMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RandomRotationMatrix_init" "', argument " "1"" of type '" "faiss::RandomRotationMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RandomRotationMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RandomRotationMatrix_init" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->init(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RandomRotationMatrix_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RandomRotationMatrix *arg1 = (faiss::RandomRotationMatrix *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RandomRotationMatrix_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RandomRotationMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RandomRotationMatrix_train" "', argument " "1"" of type '" "faiss::RandomRotationMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RandomRotationMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RandomRotationMatrix_train" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "RandomRotationMatrix_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RandomRotationMatrix__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::RandomRotationMatrix *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::RandomRotationMatrix *)new faiss::RandomRotationMatrix();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RandomRotationMatrix, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RandomRotationMatrix(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_RandomRotationMatrix", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_RandomRotationMatrix__SWIG_1(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_RandomRotationMatrix__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_RandomRotationMatrix'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::RandomRotationMatrix::RandomRotationMatrix(int,int)\n"
+    "    faiss::RandomRotationMatrix::RandomRotationMatrix()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_RandomRotationMatrix(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RandomRotationMatrix *arg1 = (faiss::RandomRotationMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RandomRotationMatrix, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_RandomRotationMatrix" "', argument " "1"" of type '" "faiss::RandomRotationMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RandomRotationMatrix * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *RandomRotationMatrix_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__RandomRotationMatrix, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *RandomRotationMatrix_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_eigen_power_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PCAMatrix_eigen_power_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_eigen_power_set" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PCAMatrix_eigen_power_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->eigen_power = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_eigen_power_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_eigen_power_get" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  result = (float) ((arg1)->eigen_power);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_epsilon_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PCAMatrix_epsilon_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_epsilon_set" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PCAMatrix_epsilon_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->epsilon = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_epsilon_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_epsilon_get" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  result = (float) ((arg1)->epsilon);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_random_rotation_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PCAMatrix_random_rotation_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_random_rotation_set" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PCAMatrix_random_rotation_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->random_rotation = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_random_rotation_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_random_rotation_get" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  result = (bool) ((arg1)->random_rotation);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_max_points_per_d_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PCAMatrix_max_points_per_d_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_max_points_per_d_set" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PCAMatrix_max_points_per_d_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->max_points_per_d = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_max_points_per_d_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_max_points_per_d_get" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  result = (size_t) ((arg1)->max_points_per_d);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_balanced_bins_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PCAMatrix_balanced_bins_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_balanced_bins_set" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PCAMatrix_balanced_bins_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->balanced_bins = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_balanced_bins_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_balanced_bins_get" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  result = (int) ((arg1)->balanced_bins);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_mean_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PCAMatrix_mean_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_mean_set" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PCAMatrix_mean_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->mean = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_mean_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_mean_get" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->mean);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_eigenvalues_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PCAMatrix_eigenvalues_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_eigenvalues_set" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PCAMatrix_eigenvalues_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->eigenvalues = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_eigenvalues_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_eigenvalues_get" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->eigenvalues);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_PCAMat_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PCAMatrix_PCAMat_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_PCAMat_set" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PCAMatrix_PCAMat_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->PCAMat = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_PCAMat_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_PCAMat_get" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->PCAMat);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PCAMatrix__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  float arg3 ;
+  bool arg4 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  float val3 ;
+  int ecode3 = 0 ;
+  bool val4 ;
+  int ecode4 = 0 ;
+  faiss::PCAMatrix *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_PCAMatrix" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_PCAMatrix" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_float(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_PCAMatrix" "', argument " "3"" of type '" "float""'");
+  } 
+  arg3 = static_cast< float >(val3);
+  ecode4 = SWIG_AsVal_bool(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_PCAMatrix" "', argument " "4"" of type '" "bool""'");
+  } 
+  arg4 = static_cast< bool >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PCAMatrix *)new faiss::PCAMatrix(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PCAMatrix, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PCAMatrix__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  float arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  float val3 ;
+  int ecode3 = 0 ;
+  faiss::PCAMatrix *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_PCAMatrix" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_PCAMatrix" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_float(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_PCAMatrix" "', argument " "3"" of type '" "float""'");
+  } 
+  arg3 = static_cast< float >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PCAMatrix *)new faiss::PCAMatrix(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PCAMatrix, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PCAMatrix__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::PCAMatrix *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_PCAMatrix" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_PCAMatrix" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PCAMatrix *)new faiss::PCAMatrix(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PCAMatrix, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PCAMatrix__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::PCAMatrix *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_PCAMatrix" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PCAMatrix *)new faiss::PCAMatrix(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PCAMatrix, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PCAMatrix__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PCAMatrix *)new faiss::PCAMatrix();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PCAMatrix, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PCAMatrix(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_PCAMatrix", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_PCAMatrix__SWIG_4(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_PCAMatrix__SWIG_3(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_PCAMatrix__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_float(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_PCAMatrix__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_float(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_bool(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_PCAMatrix__SWIG_0(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_PCAMatrix'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::PCAMatrix::PCAMatrix(int,int,float,bool)\n"
+    "    faiss::PCAMatrix::PCAMatrix(int,int,float)\n"
+    "    faiss::PCAMatrix::PCAMatrix(int,int)\n"
+    "    faiss::PCAMatrix::PCAMatrix(int)\n"
+    "    faiss::PCAMatrix::PCAMatrix()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PCAMatrix_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_train" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PCAMatrix_train" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "PCAMatrix_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_copy_from(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  faiss::PCAMatrix *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PCAMatrix_copy_from", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_copy_from" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__PCAMatrix,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PCAMatrix_copy_from" "', argument " "2"" of type '" "faiss::PCAMatrix const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "PCAMatrix_copy_from" "', argument " "2"" of type '" "faiss::PCAMatrix const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::PCAMatrix * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copy_from((faiss::PCAMatrix const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PCAMatrix_prepare_Ab(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PCAMatrix_prepare_Ab" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->prepare_Ab();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_PCAMatrix(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PCAMatrix *arg1 = (faiss::PCAMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PCAMatrix, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_PCAMatrix" "', argument " "1"" of type '" "faiss::PCAMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PCAMatrix * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *PCAMatrix_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__PCAMatrix, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *PCAMatrix_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ITQMatrix_max_iter_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQMatrix *arg1 = (faiss::ITQMatrix *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ITQMatrix_max_iter_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQMatrix_max_iter_set" "', argument " "1"" of type '" "faiss::ITQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ITQMatrix_max_iter_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->max_iter = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQMatrix_max_iter_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQMatrix *arg1 = (faiss::ITQMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQMatrix_max_iter_get" "', argument " "1"" of type '" "faiss::ITQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQMatrix * >(argp1);
+  result = (int) ((arg1)->max_iter);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQMatrix_seed_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQMatrix *arg1 = (faiss::ITQMatrix *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ITQMatrix_seed_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQMatrix_seed_set" "', argument " "1"" of type '" "faiss::ITQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ITQMatrix_seed_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->seed = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQMatrix_seed_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQMatrix *arg1 = (faiss::ITQMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQMatrix_seed_get" "', argument " "1"" of type '" "faiss::ITQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQMatrix * >(argp1);
+  result = (int) ((arg1)->seed);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQMatrix_init_rotation_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQMatrix *arg1 = (faiss::ITQMatrix *) 0 ;
+  std::vector< double > *arg2 = (std::vector< double > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ITQMatrix_init_rotation_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQMatrix_init_rotation_set" "', argument " "1"" of type '" "faiss::ITQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQMatrix * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ITQMatrix_init_rotation_set" "', argument " "2"" of type '" "std::vector< double > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< double > * >(argp2);
+  if (arg1) (arg1)->init_rotation = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQMatrix_init_rotation_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQMatrix *arg1 = (faiss::ITQMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< double > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQMatrix_init_rotation_get" "', argument " "1"" of type '" "faiss::ITQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQMatrix * >(argp1);
+  result = (std::vector< double > *)& ((arg1)->init_rotation);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ITQMatrix__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::ITQMatrix *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ITQMatrix" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ITQMatrix *)new faiss::ITQMatrix(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ITQMatrix, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ITQMatrix__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::ITQMatrix *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ITQMatrix *)new faiss::ITQMatrix();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ITQMatrix, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ITQMatrix(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_ITQMatrix", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_ITQMatrix__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_ITQMatrix__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_ITQMatrix'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ITQMatrix::ITQMatrix(int)\n"
+    "    faiss::ITQMatrix::ITQMatrix()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQMatrix_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQMatrix *arg1 = (faiss::ITQMatrix *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ITQMatrix_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQMatrix_train" "', argument " "1"" of type '" "faiss::ITQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ITQMatrix_train" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ITQMatrix_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ITQMatrix(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQMatrix *arg1 = (faiss::ITQMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQMatrix, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ITQMatrix" "', argument " "1"" of type '" "faiss::ITQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQMatrix * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ITQMatrix_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ITQMatrix, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ITQMatrix_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ITQTransform_mean_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *arg1 = (faiss::ITQTransform *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ITQTransform_mean_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQTransform_mean_set" "', argument " "1"" of type '" "faiss::ITQTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQTransform * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ITQTransform_mean_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->mean = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQTransform_mean_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *arg1 = (faiss::ITQTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQTransform_mean_get" "', argument " "1"" of type '" "faiss::ITQTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQTransform * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->mean);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQTransform_do_pca_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *arg1 = (faiss::ITQTransform *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ITQTransform_do_pca_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQTransform_do_pca_set" "', argument " "1"" of type '" "faiss::ITQTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQTransform * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ITQTransform_do_pca_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->do_pca = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQTransform_do_pca_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *arg1 = (faiss::ITQTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQTransform_do_pca_get" "', argument " "1"" of type '" "faiss::ITQTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQTransform * >(argp1);
+  result = (bool) ((arg1)->do_pca);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQTransform_itq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *arg1 = (faiss::ITQTransform *) 0 ;
+  faiss::ITQMatrix *arg2 = (faiss::ITQMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ITQTransform_itq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQTransform_itq_set" "', argument " "1"" of type '" "faiss::ITQTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQTransform * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ITQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ITQTransform_itq_set" "', argument " "2"" of type '" "faiss::ITQMatrix *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ITQMatrix * >(argp2);
+  if (arg1) (arg1)->itq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQTransform_itq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *arg1 = (faiss::ITQTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ITQMatrix *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQTransform_itq_get" "', argument " "1"" of type '" "faiss::ITQTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQTransform * >(argp1);
+  result = (faiss::ITQMatrix *)& ((arg1)->itq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ITQMatrix, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQTransform_max_train_per_dim_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *arg1 = (faiss::ITQTransform *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ITQTransform_max_train_per_dim_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQTransform_max_train_per_dim_set" "', argument " "1"" of type '" "faiss::ITQTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQTransform * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ITQTransform_max_train_per_dim_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->max_train_per_dim = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQTransform_max_train_per_dim_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *arg1 = (faiss::ITQTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQTransform_max_train_per_dim_get" "', argument " "1"" of type '" "faiss::ITQTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQTransform * >(argp1);
+  result = (int) ((arg1)->max_train_per_dim);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQTransform_pca_then_itq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *arg1 = (faiss::ITQTransform *) 0 ;
+  faiss::LinearTransform *arg2 = (faiss::LinearTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ITQTransform_pca_then_itq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQTransform_pca_then_itq_set" "', argument " "1"" of type '" "faiss::ITQTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQTransform * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ITQTransform_pca_then_itq_set" "', argument " "2"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::LinearTransform * >(argp2);
+  if (arg1) (arg1)->pca_then_itq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQTransform_pca_then_itq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *arg1 = (faiss::ITQTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::LinearTransform *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQTransform_pca_then_itq_get" "', argument " "1"" of type '" "faiss::ITQTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQTransform * >(argp1);
+  result = (faiss::LinearTransform *)& ((arg1)->pca_then_itq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ITQTransform__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  bool arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  faiss::ITQTransform *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ITQTransform" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ITQTransform" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_ITQTransform" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ITQTransform *)new faiss::ITQTransform(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ITQTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ITQTransform__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::ITQTransform *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ITQTransform" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ITQTransform" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ITQTransform *)new faiss::ITQTransform(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ITQTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ITQTransform__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::ITQTransform *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ITQTransform" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ITQTransform *)new faiss::ITQTransform(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ITQTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ITQTransform__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ITQTransform *)new faiss::ITQTransform();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ITQTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ITQTransform(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_ITQTransform", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_ITQTransform__SWIG_3(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_ITQTransform__SWIG_2(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_ITQTransform__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_ITQTransform__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_ITQTransform'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ITQTransform::ITQTransform(int,int,bool)\n"
+    "    faiss::ITQTransform::ITQTransform(int,int)\n"
+    "    faiss::ITQTransform::ITQTransform(int)\n"
+    "    faiss::ITQTransform::ITQTransform()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQTransform_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *arg1 = (faiss::ITQTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ITQTransform_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQTransform_train" "', argument " "1"" of type '" "faiss::ITQTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ITQTransform_train" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ITQTransform_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ITQTransform_apply_noalloc(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *arg1 = (faiss::ITQTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ITQTransform_apply_noalloc", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ITQTransform_apply_noalloc" "', argument " "1"" of type '" "faiss::ITQTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ITQTransform_apply_noalloc" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ITQTransform_apply_noalloc" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ITQTransform_apply_noalloc" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ITQTransform const *)arg1)->apply_noalloc(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ITQTransform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ITQTransform *arg1 = (faiss::ITQTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ITQTransform, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ITQTransform" "', argument " "1"" of type '" "faiss::ITQTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ITQTransform * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ITQTransform_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ITQTransform, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ITQTransform_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_M_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OPQMatrix_M_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_M_set" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OPQMatrix_M_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->M = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_M_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_M_get" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  result = (int) ((arg1)->M);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_niter_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OPQMatrix_niter_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_niter_set" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OPQMatrix_niter_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->niter = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_niter_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_niter_get" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  result = (int) ((arg1)->niter);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_niter_pq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OPQMatrix_niter_pq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_niter_pq_set" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OPQMatrix_niter_pq_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->niter_pq = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_niter_pq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_niter_pq_get" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  result = (int) ((arg1)->niter_pq);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_niter_pq_0_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OPQMatrix_niter_pq_0_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_niter_pq_0_set" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OPQMatrix_niter_pq_0_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->niter_pq_0 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_niter_pq_0_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_niter_pq_0_get" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  result = (int) ((arg1)->niter_pq_0);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_max_train_points_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OPQMatrix_max_train_points_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_max_train_points_set" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OPQMatrix_max_train_points_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->max_train_points = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_max_train_points_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_max_train_points_get" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  result = (size_t) ((arg1)->max_train_points);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_verbose_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OPQMatrix_verbose_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_verbose_set" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OPQMatrix_verbose_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->verbose = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_verbose_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_verbose_get" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  result = (bool) ((arg1)->verbose);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_pq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  faiss::ProductQuantizer *arg2 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OPQMatrix_pq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_pq_set" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ProductQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OPQMatrix_pq_set" "', argument " "2"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProductQuantizer * >(argp2);
+  if (arg1) (arg1)->pq = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_pq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ProductQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_pq_get" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  result = (faiss::ProductQuantizer *) ((arg1)->pq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_OPQMatrix__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::OPQMatrix *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_OPQMatrix" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_OPQMatrix" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_OPQMatrix" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::OPQMatrix *)new faiss::OPQMatrix(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__OPQMatrix, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_OPQMatrix__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::OPQMatrix *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_OPQMatrix" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_OPQMatrix" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::OPQMatrix *)new faiss::OPQMatrix(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__OPQMatrix, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_OPQMatrix__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::OPQMatrix *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_OPQMatrix" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::OPQMatrix *)new faiss::OPQMatrix(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__OPQMatrix, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_OPQMatrix__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::OPQMatrix *)new faiss::OPQMatrix();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__OPQMatrix, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_OPQMatrix(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_OPQMatrix", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_OPQMatrix__SWIG_3(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_OPQMatrix__SWIG_2(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_OPQMatrix__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_OPQMatrix__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_OPQMatrix'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::OPQMatrix::OPQMatrix(int,int,int)\n"
+    "    faiss::OPQMatrix::OPQMatrix(int,int)\n"
+    "    faiss::OPQMatrix::OPQMatrix(int)\n"
+    "    faiss::OPQMatrix::OPQMatrix()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_OPQMatrix_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OPQMatrix_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OPQMatrix_train" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OPQMatrix_train" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "OPQMatrix_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_OPQMatrix(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OPQMatrix *arg1 = (faiss::OPQMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OPQMatrix, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_OPQMatrix" "', argument " "1"" of type '" "faiss::OPQMatrix *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OPQMatrix * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *OPQMatrix_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__OPQMatrix, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *OPQMatrix_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_RemapDimensionsTransform_map_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RemapDimensionsTransform *arg1 = (faiss::RemapDimensionsTransform *) 0 ;
+  std::vector< int > *arg2 = (std::vector< int > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RemapDimensionsTransform_map_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RemapDimensionsTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RemapDimensionsTransform_map_set" "', argument " "1"" of type '" "faiss::RemapDimensionsTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RemapDimensionsTransform * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "RemapDimensionsTransform_map_set" "', argument " "2"" of type '" "std::vector< int > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  if (arg1) (arg1)->map = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RemapDimensionsTransform_map_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RemapDimensionsTransform *arg1 = (faiss::RemapDimensionsTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< int > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RemapDimensionsTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RemapDimensionsTransform_map_get" "', argument " "1"" of type '" "faiss::RemapDimensionsTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RemapDimensionsTransform * >(argp1);
+  result = (std::vector< int > *)& ((arg1)->map);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RemapDimensionsTransform__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int *arg3 = (int *) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  faiss::RemapDimensionsTransform *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_RemapDimensionsTransform" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_RemapDimensionsTransform" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_RemapDimensionsTransform" "', argument " "3"" of type '" "int const *""'"); 
+  }
+  arg3 = reinterpret_cast< int * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::RemapDimensionsTransform *)new faiss::RemapDimensionsTransform(arg1,arg2,(int const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RemapDimensionsTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RemapDimensionsTransform__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  bool arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  faiss::RemapDimensionsTransform *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_RemapDimensionsTransform" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_RemapDimensionsTransform" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_RemapDimensionsTransform" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::RemapDimensionsTransform *)new faiss::RemapDimensionsTransform(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RemapDimensionsTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RemapDimensionsTransform__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::RemapDimensionsTransform *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_RemapDimensionsTransform" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_RemapDimensionsTransform" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::RemapDimensionsTransform *)new faiss::RemapDimensionsTransform(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RemapDimensionsTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RemapDimensionsTransform_apply_noalloc(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RemapDimensionsTransform *arg1 = (faiss::RemapDimensionsTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RemapDimensionsTransform_apply_noalloc", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RemapDimensionsTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RemapDimensionsTransform_apply_noalloc" "', argument " "1"" of type '" "faiss::RemapDimensionsTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RemapDimensionsTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RemapDimensionsTransform_apply_noalloc" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "RemapDimensionsTransform_apply_noalloc" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "RemapDimensionsTransform_apply_noalloc" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::RemapDimensionsTransform const *)arg1)->apply_noalloc(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RemapDimensionsTransform_reverse_transform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RemapDimensionsTransform *arg1 = (faiss::RemapDimensionsTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RemapDimensionsTransform_reverse_transform", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RemapDimensionsTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RemapDimensionsTransform_reverse_transform" "', argument " "1"" of type '" "faiss::RemapDimensionsTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RemapDimensionsTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RemapDimensionsTransform_reverse_transform" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "RemapDimensionsTransform_reverse_transform" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "RemapDimensionsTransform_reverse_transform" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::RemapDimensionsTransform const *)arg1)->reverse_transform(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RemapDimensionsTransform__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::RemapDimensionsTransform *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::RemapDimensionsTransform *)new faiss::RemapDimensionsTransform();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RemapDimensionsTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RemapDimensionsTransform(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_RemapDimensionsTransform", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_RemapDimensionsTransform__SWIG_3(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_RemapDimensionsTransform__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_RemapDimensionsTransform__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_RemapDimensionsTransform__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_RemapDimensionsTransform'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::RemapDimensionsTransform::RemapDimensionsTransform(int,int,int const *)\n"
+    "    faiss::RemapDimensionsTransform::RemapDimensionsTransform(int,int,bool)\n"
+    "    faiss::RemapDimensionsTransform::RemapDimensionsTransform(int,int)\n"
+    "    faiss::RemapDimensionsTransform::RemapDimensionsTransform()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_RemapDimensionsTransform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RemapDimensionsTransform *arg1 = (faiss::RemapDimensionsTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RemapDimensionsTransform, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_RemapDimensionsTransform" "', argument " "1"" of type '" "faiss::RemapDimensionsTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RemapDimensionsTransform * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *RemapDimensionsTransform_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__RemapDimensionsTransform, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *RemapDimensionsTransform_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_NormalizationTransform_norm_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NormalizationTransform *arg1 = (faiss::NormalizationTransform *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NormalizationTransform_norm_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NormalizationTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NormalizationTransform_norm_set" "', argument " "1"" of type '" "faiss::NormalizationTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NormalizationTransform * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NormalizationTransform_norm_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->norm = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NormalizationTransform_norm_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NormalizationTransform *arg1 = (faiss::NormalizationTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NormalizationTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NormalizationTransform_norm_get" "', argument " "1"" of type '" "faiss::NormalizationTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NormalizationTransform * >(argp1);
+  result = (float) ((arg1)->norm);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_NormalizationTransform__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  float arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  faiss::NormalizationTransform *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_NormalizationTransform" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_NormalizationTransform" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::NormalizationTransform *)new faiss::NormalizationTransform(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__NormalizationTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_NormalizationTransform__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::NormalizationTransform *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_NormalizationTransform" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::NormalizationTransform *)new faiss::NormalizationTransform(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__NormalizationTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_NormalizationTransform__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::NormalizationTransform *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::NormalizationTransform *)new faiss::NormalizationTransform();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__NormalizationTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_NormalizationTransform(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_NormalizationTransform", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_NormalizationTransform__SWIG_2(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_NormalizationTransform__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_float(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_NormalizationTransform__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_NormalizationTransform'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::NormalizationTransform::NormalizationTransform(int,float)\n"
+    "    faiss::NormalizationTransform::NormalizationTransform(int)\n"
+    "    faiss::NormalizationTransform::NormalizationTransform()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_NormalizationTransform_apply_noalloc(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NormalizationTransform *arg1 = (faiss::NormalizationTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NormalizationTransform_apply_noalloc", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NormalizationTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NormalizationTransform_apply_noalloc" "', argument " "1"" of type '" "faiss::NormalizationTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NormalizationTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NormalizationTransform_apply_noalloc" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "NormalizationTransform_apply_noalloc" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "NormalizationTransform_apply_noalloc" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::NormalizationTransform const *)arg1)->apply_noalloc(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NormalizationTransform_reverse_transform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NormalizationTransform *arg1 = (faiss::NormalizationTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NormalizationTransform_reverse_transform", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NormalizationTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NormalizationTransform_reverse_transform" "', argument " "1"" of type '" "faiss::NormalizationTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NormalizationTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NormalizationTransform_reverse_transform" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "NormalizationTransform_reverse_transform" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "NormalizationTransform_reverse_transform" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::NormalizationTransform const *)arg1)->reverse_transform(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_NormalizationTransform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NormalizationTransform *arg1 = (faiss::NormalizationTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NormalizationTransform, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_NormalizationTransform" "', argument " "1"" of type '" "faiss::NormalizationTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NormalizationTransform * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *NormalizationTransform_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__NormalizationTransform, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *NormalizationTransform_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_CenteringTransform_mean_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::CenteringTransform *arg1 = (faiss::CenteringTransform *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "CenteringTransform_mean_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__CenteringTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "CenteringTransform_mean_set" "', argument " "1"" of type '" "faiss::CenteringTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::CenteringTransform * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "CenteringTransform_mean_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->mean = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_CenteringTransform_mean_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::CenteringTransform *arg1 = (faiss::CenteringTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__CenteringTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "CenteringTransform_mean_get" "', argument " "1"" of type '" "faiss::CenteringTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::CenteringTransform * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->mean);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_CenteringTransform__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::CenteringTransform *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_CenteringTransform" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::CenteringTransform *)new faiss::CenteringTransform(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__CenteringTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_CenteringTransform__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::CenteringTransform *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::CenteringTransform *)new faiss::CenteringTransform();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__CenteringTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_CenteringTransform(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_CenteringTransform", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_CenteringTransform__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_CenteringTransform__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_CenteringTransform'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::CenteringTransform::CenteringTransform(int)\n"
+    "    faiss::CenteringTransform::CenteringTransform()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_CenteringTransform_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::CenteringTransform *arg1 = (faiss::CenteringTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "CenteringTransform_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__CenteringTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "CenteringTransform_train" "', argument " "1"" of type '" "faiss::CenteringTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::CenteringTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "CenteringTransform_train" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "CenteringTransform_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_CenteringTransform_apply_noalloc(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::CenteringTransform *arg1 = (faiss::CenteringTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "CenteringTransform_apply_noalloc", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__CenteringTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "CenteringTransform_apply_noalloc" "', argument " "1"" of type '" "faiss::CenteringTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::CenteringTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "CenteringTransform_apply_noalloc" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "CenteringTransform_apply_noalloc" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "CenteringTransform_apply_noalloc" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::CenteringTransform const *)arg1)->apply_noalloc(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_CenteringTransform_reverse_transform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::CenteringTransform *arg1 = (faiss::CenteringTransform *) 0 ;
+  faiss::VectorTransform::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "CenteringTransform_reverse_transform", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__CenteringTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "CenteringTransform_reverse_transform" "', argument " "1"" of type '" "faiss::CenteringTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::CenteringTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "CenteringTransform_reverse_transform" "', argument " "2"" of type '" "faiss::VectorTransform::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::VectorTransform::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "CenteringTransform_reverse_transform" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "CenteringTransform_reverse_transform" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::CenteringTransform const *)arg1)->reverse_transform(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_CenteringTransform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::CenteringTransform *arg1 = (faiss::CenteringTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__CenteringTransform, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_CenteringTransform" "', argument " "1"" of type '" "faiss::CenteringTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::CenteringTransform * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *CenteringTransform_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__CenteringTransform, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *CenteringTransform_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_chain_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  std::vector< faiss::VectorTransform * > *arg2 = (std::vector< faiss::VectorTransform * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_chain_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_chain_set" "', argument " "1"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexPreTransform_chain_set" "', argument " "2"" of type '" "std::vector< faiss::VectorTransform * > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::VectorTransform * > * >(argp2);
+  if (arg1) (arg1)->chain = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_chain_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::VectorTransform * > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_chain_get" "', argument " "1"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  result = (std::vector< faiss::VectorTransform * > *)& ((arg1)->chain);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__VectorTransform_p_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_index_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_index_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_index_set" "', argument " "1"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexPreTransform_index_set" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  if (arg1) (arg1)->index = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_index_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_index_get" "', argument " "1"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  result = (faiss::Index *) ((arg1)->index);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_own_fields_set" "', argument " "1"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPreTransform_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_own_fields_get" "', argument " "1"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPreTransform__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexPreTransform *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexPreTransform" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexPreTransform *)new faiss::IndexPreTransform(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexPreTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPreTransform__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexPreTransform *)new faiss::IndexPreTransform();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexPreTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPreTransform__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::IndexPreTransform *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexPreTransform" "', argument " "1"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_IndexPreTransform" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexPreTransform *)new faiss::IndexPreTransform(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexPreTransform, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPreTransform(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexPreTransform", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexPreTransform__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexPreTransform__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__VectorTransform, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__Index, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_IndexPreTransform__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexPreTransform'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexPreTransform::IndexPreTransform(faiss::Index *)\n"
+    "    faiss::IndexPreTransform::IndexPreTransform()\n"
+    "    faiss::IndexPreTransform::IndexPreTransform(faiss::VectorTransform *,faiss::Index *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_prepend_transform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::VectorTransform *arg2 = (faiss::VectorTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_prepend_transform", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_prepend_transform" "', argument " "1"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexPreTransform_prepend_transform" "', argument " "2"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::VectorTransform * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->prepend_transform(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_train" "', argument " "1"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPreTransform_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPreTransform_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_add" "', argument " "1"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPreTransform_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPreTransform_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_add_with_ids" "', argument " "1"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPreTransform_add_with_ids" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPreTransform_add_with_ids" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexPreTransform_add_with_ids" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_reset" "', argument " "1"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_remove_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_remove_ids" "', argument " "1"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexPreTransform_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexPreTransform_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_search" "', argument " "1"" of type '" "faiss::IndexPreTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPreTransform_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPreTransform_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexPreTransform_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexPreTransform_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexPreTransform_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPreTransform const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_range_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_range_search", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_range_search" "', argument " "1"" of type '" "faiss::IndexPreTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPreTransform_range_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPreTransform_range_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_float(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexPreTransform_range_search" "', argument " "4"" of type '" "float""'");
+  } 
+  arg4 = static_cast< float >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexPreTransform_range_search" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPreTransform const *)arg1)->range_search(arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_reconstruct" "', argument " "1"" of type '" "faiss::IndexPreTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPreTransform_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPreTransform_reconstruct" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPreTransform const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_reconstruct_n(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  faiss::Index::idx_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_reconstruct_n", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_reconstruct_n" "', argument " "1"" of type '" "faiss::IndexPreTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPreTransform_reconstruct_n" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexPreTransform_reconstruct_n" "', argument " "3"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::Index::idx_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexPreTransform_reconstruct_n" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPreTransform const *)arg1)->reconstruct_n(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_search_and_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  float *arg7 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_search_and_reconstruct", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_search_and_reconstruct" "', argument " "1"" of type '" "faiss::IndexPreTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPreTransform_search_and_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPreTransform_search_and_reconstruct" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexPreTransform_search_and_reconstruct" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexPreTransform_search_and_reconstruct" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexPreTransform_search_and_reconstruct" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexPreTransform_search_and_reconstruct" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPreTransform const *)arg1)->search_and_reconstruct(arg2,(float const *)arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_apply_chain(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  float *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_apply_chain", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_apply_chain" "', argument " "1"" of type '" "faiss::IndexPreTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPreTransform_apply_chain" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPreTransform_apply_chain" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float *)((faiss::IndexPreTransform const *)arg1)->apply_chain(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_reverse_chain(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_reverse_chain", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_reverse_chain" "', argument " "1"" of type '" "faiss::IndexPreTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPreTransform_reverse_chain" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPreTransform_reverse_chain" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexPreTransform_reverse_chain" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPreTransform const *)arg1)->reverse_chain(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_get_distance_computer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DistanceComputer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_get_distance_computer" "', argument " "1"" of type '" "faiss::IndexPreTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::DistanceComputer *)((faiss::IndexPreTransform const *)arg1)->get_distance_computer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DistanceComputer, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_sa_code_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_sa_code_size" "', argument " "1"" of type '" "faiss::IndexPreTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::IndexPreTransform const *)arg1)->sa_code_size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_sa_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_sa_encode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_sa_encode" "', argument " "1"" of type '" "faiss::IndexPreTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPreTransform_sa_encode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPreTransform_sa_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexPreTransform_sa_encode" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPreTransform const *)arg1)->sa_encode(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPreTransform_sa_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPreTransform_sa_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPreTransform_sa_decode" "', argument " "1"" of type '" "faiss::IndexPreTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPreTransform_sa_decode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPreTransform_sa_decode" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexPreTransform_sa_decode" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPreTransform const *)arg1)->sa_decode(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexPreTransform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPreTransform *arg1 = (faiss::IndexPreTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPreTransform, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexPreTransform" "', argument " "1"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPreTransform * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexPreTransform_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexPreTransform, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexPreTransform_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexRefine_base_index_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexRefine_base_index_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_base_index_set" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexRefine_base_index_set" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  if (arg1) (arg1)->base_index = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_base_index_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_base_index_get" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  result = (faiss::Index *) ((arg1)->base_index);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_refine_index_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexRefine_refine_index_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_refine_index_set" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexRefine_refine_index_set" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  if (arg1) (arg1)->refine_index = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_refine_index_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_refine_index_get" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  result = (faiss::Index *) ((arg1)->refine_index);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexRefine_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_own_fields_set" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexRefine_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_own_fields_get" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_own_refine_index_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexRefine_own_refine_index_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_own_refine_index_set" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexRefine_own_refine_index_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_refine_index = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_own_refine_index_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_own_refine_index_get" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  result = (bool) ((arg1)->own_refine_index);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_k_factor_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexRefine_k_factor_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_k_factor_set" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexRefine_k_factor_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->k_factor = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_k_factor_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_k_factor_get" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  result = (float) ((arg1)->k_factor);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexRefine__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::IndexRefine *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexRefine" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_IndexRefine" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexRefine *)new faiss::IndexRefine(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexRefine, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexRefine__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexRefine *)new faiss::IndexRefine();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexRefine, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexRefine(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexRefine", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexRefine__SWIG_1(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__Index, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_IndexRefine__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexRefine'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexRefine::IndexRefine(faiss::Index *,faiss::Index *)\n"
+    "    faiss::IndexRefine::IndexRefine()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexRefine_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_train" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexRefine_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexRefine_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexRefine_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_add" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexRefine_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexRefine_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_reset" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexRefine_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_search" "', argument " "1"" of type '" "faiss::IndexRefine const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexRefine_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexRefine_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexRefine_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexRefine_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexRefine_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexRefine const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexRefine_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_reconstruct" "', argument " "1"" of type '" "faiss::IndexRefine const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexRefine_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexRefine_reconstruct" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexRefine const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_sa_code_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_sa_code_size" "', argument " "1"" of type '" "faiss::IndexRefine const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::IndexRefine const *)arg1)->sa_code_size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_sa_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexRefine_sa_encode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_sa_encode" "', argument " "1"" of type '" "faiss::IndexRefine const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexRefine_sa_encode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexRefine_sa_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexRefine_sa_encode" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexRefine const *)arg1)->sa_encode(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefine_sa_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexRefine_sa_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefine_sa_decode" "', argument " "1"" of type '" "faiss::IndexRefine const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexRefine_sa_decode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexRefine_sa_decode" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexRefine_sa_decode" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexRefine const *)arg1)->sa_decode(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexRefine(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefine *arg1 = (faiss::IndexRefine *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefine, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexRefine" "', argument " "1"" of type '" "faiss::IndexRefine *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefine * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexRefine_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexRefine, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexRefine_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexRefineFlat__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexRefineFlat *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexRefineFlat" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexRefineFlat *)new faiss::IndexRefineFlat(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexRefineFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexRefineFlat__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::IndexRefineFlat *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexRefineFlat" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_IndexRefineFlat" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexRefineFlat *)new faiss::IndexRefineFlat(arg1,(float const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexRefineFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexRefineFlat__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefineFlat *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexRefineFlat *)new faiss::IndexRefineFlat();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexRefineFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexRefineFlat(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexRefineFlat", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexRefineFlat__SWIG_2(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexRefineFlat__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_float, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_IndexRefineFlat__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexRefineFlat'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexRefineFlat::IndexRefineFlat(faiss::Index *)\n"
+    "    faiss::IndexRefineFlat::IndexRefineFlat(faiss::Index *,float const *)\n"
+    "    faiss::IndexRefineFlat::IndexRefineFlat()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexRefineFlat_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefineFlat *arg1 = (faiss::IndexRefineFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexRefineFlat_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefineFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexRefineFlat_search" "', argument " "1"" of type '" "faiss::IndexRefineFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefineFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexRefineFlat_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexRefineFlat_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexRefineFlat_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexRefineFlat_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexRefineFlat_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexRefineFlat const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexRefineFlat(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexRefineFlat *arg1 = (faiss::IndexRefineFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexRefineFlat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexRefineFlat" "', argument " "1"" of type '" "faiss::IndexRefineFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexRefineFlat * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexRefineFlat_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexRefineFlat, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexRefineFlat_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexLSH_nbits_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLSH_nbits_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_nbits_set" "', argument " "1"" of type '" "faiss::IndexLSH *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLSH_nbits_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nbits = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_nbits_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_nbits_get" "', argument " "1"" of type '" "faiss::IndexLSH *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  result = (int) ((arg1)->nbits);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_rotate_data_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLSH_rotate_data_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_rotate_data_set" "', argument " "1"" of type '" "faiss::IndexLSH *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLSH_rotate_data_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->rotate_data = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_rotate_data_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_rotate_data_get" "', argument " "1"" of type '" "faiss::IndexLSH *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  result = (bool) ((arg1)->rotate_data);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_train_thresholds_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLSH_train_thresholds_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_train_thresholds_set" "', argument " "1"" of type '" "faiss::IndexLSH *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLSH_train_thresholds_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->train_thresholds = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_train_thresholds_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_train_thresholds_get" "', argument " "1"" of type '" "faiss::IndexLSH *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  result = (bool) ((arg1)->train_thresholds);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_rrot_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  faiss::RandomRotationMatrix *arg2 = (faiss::RandomRotationMatrix *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLSH_rrot_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_rrot_set" "', argument " "1"" of type '" "faiss::IndexLSH *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__RandomRotationMatrix, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexLSH_rrot_set" "', argument " "2"" of type '" "faiss::RandomRotationMatrix *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::RandomRotationMatrix * >(argp2);
+  if (arg1) (arg1)->rrot = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_rrot_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::RandomRotationMatrix *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_rrot_get" "', argument " "1"" of type '" "faiss::IndexLSH *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  result = (faiss::RandomRotationMatrix *)& ((arg1)->rrot);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RandomRotationMatrix, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_thresholds_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLSH_thresholds_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_thresholds_set" "', argument " "1"" of type '" "faiss::IndexLSH *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexLSH_thresholds_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->thresholds = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_thresholds_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_thresholds_get" "', argument " "1"" of type '" "faiss::IndexLSH *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->thresholds);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexLSH__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  int arg2 ;
+  bool arg3 ;
+  bool arg4 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  bool val4 ;
+  int ecode4 = 0 ;
+  faiss::IndexLSH *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexLSH" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexLSH" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexLSH" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  ecode4 = SWIG_AsVal_bool(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexLSH" "', argument " "4"" of type '" "bool""'");
+  } 
+  arg4 = static_cast< bool >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexLSH *)new faiss::IndexLSH(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexLSH, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexLSH__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  int arg2 ;
+  bool arg3 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexLSH *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexLSH" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexLSH" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexLSH" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexLSH *)new faiss::IndexLSH(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexLSH, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexLSH__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  int arg2 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexLSH *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexLSH" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexLSH" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexLSH *)new faiss::IndexLSH(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexLSH, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_apply_preprocess(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  float *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLSH_apply_preprocess", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_apply_preprocess" "', argument " "1"" of type '" "faiss::IndexLSH const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLSH_apply_preprocess" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexLSH_apply_preprocess" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float *)((faiss::IndexLSH const *)arg1)->apply_preprocess(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLSH_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_train" "', argument " "1"" of type '" "faiss::IndexLSH *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLSH_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexLSH_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLSH_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_search" "', argument " "1"" of type '" "faiss::IndexLSH const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLSH_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexLSH_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexLSH_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexLSH_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexLSH_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexLSH const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_transfer_thresholds(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  faiss::LinearTransform *arg2 = (faiss::LinearTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLSH_transfer_thresholds", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_transfer_thresholds" "', argument " "1"" of type '" "faiss::IndexLSH *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__LinearTransform, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexLSH_transfer_thresholds" "', argument " "2"" of type '" "faiss::LinearTransform *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::LinearTransform * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->transfer_thresholds(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexLSH(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexLSH" "', argument " "1"" of type '" "faiss::IndexLSH *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexLSH__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexLSH *)new faiss::IndexLSH();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexLSH, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexLSH(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexLSH", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexLSH__SWIG_3(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexLSH__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexLSH__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_bool(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_IndexLSH__SWIG_0(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexLSH'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexLSH::IndexLSH(faiss::Index::idx_t,int,bool,bool)\n"
+    "    faiss::IndexLSH::IndexLSH(faiss::Index::idx_t,int,bool)\n"
+    "    faiss::IndexLSH::IndexLSH(faiss::Index::idx_t,int)\n"
+    "    faiss::IndexLSH::IndexLSH()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_sa_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLSH_sa_encode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_sa_encode" "', argument " "1"" of type '" "faiss::IndexLSH const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLSH_sa_encode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexLSH_sa_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexLSH_sa_encode" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexLSH const *)arg1)->sa_encode(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLSH_sa_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLSH *arg1 = (faiss::IndexLSH *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLSH_sa_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLSH, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLSH_sa_decode" "', argument " "1"" of type '" "faiss::IndexLSH const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLSH * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLSH_sa_decode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexLSH_sa_decode" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexLSH_sa_decode" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexLSH const *)arg1)->sa_decode(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexLSH_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexLSH, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexLSH_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_init_temperature_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingParameters_init_temperature_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_init_temperature_set" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SimulatedAnnealingParameters_init_temperature_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->init_temperature = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_init_temperature_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_init_temperature_get" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  result = (double) ((arg1)->init_temperature);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_temperature_decay_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingParameters_temperature_decay_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_temperature_decay_set" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SimulatedAnnealingParameters_temperature_decay_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->temperature_decay = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_temperature_decay_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_temperature_decay_get" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  result = (double) ((arg1)->temperature_decay);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_n_iter_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingParameters_n_iter_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_n_iter_set" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SimulatedAnnealingParameters_n_iter_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->n_iter = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_n_iter_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_n_iter_get" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  result = (int) ((arg1)->n_iter);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_n_redo_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingParameters_n_redo_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_n_redo_set" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SimulatedAnnealingParameters_n_redo_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->n_redo = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_n_redo_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_n_redo_get" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  result = (int) ((arg1)->n_redo);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_seed_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingParameters_seed_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_seed_set" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SimulatedAnnealingParameters_seed_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->seed = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_seed_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_seed_get" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  result = (int) ((arg1)->seed);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_verbose_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingParameters_verbose_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_verbose_set" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SimulatedAnnealingParameters_verbose_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->verbose = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_verbose_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_verbose_get" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  result = (int) ((arg1)->verbose);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_only_bit_flips_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingParameters_only_bit_flips_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_only_bit_flips_set" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SimulatedAnnealingParameters_only_bit_flips_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->only_bit_flips = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_only_bit_flips_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_only_bit_flips_get" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  result = (bool) ((arg1)->only_bit_flips);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_init_random_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingParameters_init_random_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_init_random_set" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SimulatedAnnealingParameters_init_random_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->init_random = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingParameters_init_random_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingParameters_init_random_get" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  result = (bool) ((arg1)->init_random);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_SimulatedAnnealingParameters(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_SimulatedAnnealingParameters", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::SimulatedAnnealingParameters *)new faiss::SimulatedAnnealingParameters();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__SimulatedAnnealingParameters, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_SimulatedAnnealingParameters(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingParameters *arg1 = (faiss::SimulatedAnnealingParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingParameters, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_SimulatedAnnealingParameters" "', argument " "1"" of type '" "faiss::SimulatedAnnealingParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *SimulatedAnnealingParameters_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__SimulatedAnnealingParameters, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *SimulatedAnnealingParameters_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_PermutationObjective_n_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PermutationObjective *arg1 = (faiss::PermutationObjective *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PermutationObjective_n_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PermutationObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PermutationObjective_n_set" "', argument " "1"" of type '" "faiss::PermutationObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PermutationObjective * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PermutationObjective_n_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->n = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PermutationObjective_n_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PermutationObjective *arg1 = (faiss::PermutationObjective *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PermutationObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PermutationObjective_n_get" "', argument " "1"" of type '" "faiss::PermutationObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PermutationObjective * >(argp1);
+  result = (int) ((arg1)->n);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PermutationObjective_compute_cost(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PermutationObjective *arg1 = (faiss::PermutationObjective *) 0 ;
+  int *arg2 = (int *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PermutationObjective_compute_cost", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PermutationObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PermutationObjective_compute_cost" "', argument " "1"" of type '" "faiss::PermutationObjective const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PermutationObjective * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PermutationObjective_compute_cost" "', argument " "2"" of type '" "int const *""'"); 
+  }
+  arg2 = reinterpret_cast< int * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)((faiss::PermutationObjective const *)arg1)->compute_cost((int const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PermutationObjective_cost_update(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PermutationObjective *arg1 = (faiss::PermutationObjective *) 0 ;
+  int *arg2 = (int *) 0 ;
+  int arg3 ;
+  int arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PermutationObjective_cost_update", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PermutationObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PermutationObjective_cost_update" "', argument " "1"" of type '" "faiss::PermutationObjective const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PermutationObjective * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PermutationObjective_cost_update" "', argument " "2"" of type '" "int const *""'"); 
+  }
+  arg2 = reinterpret_cast< int * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "PermutationObjective_cost_update" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "PermutationObjective_cost_update" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)((faiss::PermutationObjective const *)arg1)->cost_update((int const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_PermutationObjective(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PermutationObjective *arg1 = (faiss::PermutationObjective *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PermutationObjective, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_PermutationObjective" "', argument " "1"" of type '" "faiss::PermutationObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PermutationObjective * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *PermutationObjective_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__PermutationObjective, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_dis_weight_factor_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReproduceDistancesObjective_dis_weight_factor_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_dis_weight_factor_set" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReproduceDistancesObjective_dis_weight_factor_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->dis_weight_factor = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_dis_weight_factor_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_dis_weight_factor_get" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  result = (double) ((arg1)->dis_weight_factor);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_sqr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  double arg1 ;
+  double val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_double(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "ReproduceDistancesObjective_sqr" "', argument " "1"" of type '" "double""'");
+  } 
+  arg1 = static_cast< double >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)faiss::ReproduceDistancesObjective::sqr(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_dis_weight(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReproduceDistancesObjective_dis_weight", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_dis_weight" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReproduceDistancesObjective_dis_weight" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)((faiss::ReproduceDistancesObjective const *)arg1)->dis_weight(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_source_dis_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  std::vector< double > *arg2 = (std::vector< double > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReproduceDistancesObjective_source_dis_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_source_dis_set" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ReproduceDistancesObjective_source_dis_set" "', argument " "2"" of type '" "std::vector< double > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< double > * >(argp2);
+  if (arg1) (arg1)->source_dis = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_source_dis_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< double > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_source_dis_get" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  result = (std::vector< double > *)& ((arg1)->source_dis);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_target_dis_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  double *arg2 = (double *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReproduceDistancesObjective_target_dis_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_target_dis_set" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_double, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ReproduceDistancesObjective_target_dis_set" "', argument " "2"" of type '" "double const *""'"); 
+  }
+  arg2 = reinterpret_cast< double * >(argp2);
+  if (arg1) (arg1)->target_dis = (double const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_target_dis_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_target_dis_get" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  result = (double *) ((arg1)->target_dis);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_double, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_weights_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  std::vector< double > *arg2 = (std::vector< double > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReproduceDistancesObjective_weights_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_weights_set" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ReproduceDistancesObjective_weights_set" "', argument " "2"" of type '" "std::vector< double > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< double > * >(argp2);
+  if (arg1) (arg1)->weights = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_weights_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< double > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_weights_get" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  result = (std::vector< double > *)& ((arg1)->weights);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_get_source_dis(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  int arg2 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReproduceDistancesObjective_get_source_dis", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_get_source_dis" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReproduceDistancesObjective_get_source_dis" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ReproduceDistancesObjective_get_source_dis" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)((faiss::ReproduceDistancesObjective const *)arg1)->get_source_dis(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_compute_cost(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  int *arg2 = (int *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReproduceDistancesObjective_compute_cost", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_compute_cost" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ReproduceDistancesObjective_compute_cost" "', argument " "2"" of type '" "int const *""'"); 
+  }
+  arg2 = reinterpret_cast< int * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)((faiss::ReproduceDistancesObjective const *)arg1)->compute_cost((int const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_cost_update(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  int *arg2 = (int *) 0 ;
+  int arg3 ;
+  int arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReproduceDistancesObjective_cost_update", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_cost_update" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ReproduceDistancesObjective_cost_update" "', argument " "2"" of type '" "int const *""'"); 
+  }
+  arg2 = reinterpret_cast< int * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ReproduceDistancesObjective_cost_update" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ReproduceDistancesObjective_cost_update" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)((faiss::ReproduceDistancesObjective const *)arg1)->cost_update((int const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ReproduceDistancesObjective(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  double *arg2 = (double *) 0 ;
+  double *arg3 = (double *) 0 ;
+  double arg4 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  double val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  faiss::ReproduceDistancesObjective *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ReproduceDistancesObjective", 4, 4, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ReproduceDistancesObjective" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_double, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_ReproduceDistancesObjective" "', argument " "2"" of type '" "double const *""'"); 
+  }
+  arg2 = reinterpret_cast< double * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_double, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_ReproduceDistancesObjective" "', argument " "3"" of type '" "double const *""'"); 
+  }
+  arg3 = reinterpret_cast< double * >(argp3);
+  ecode4 = SWIG_AsVal_double(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_ReproduceDistancesObjective" "', argument " "4"" of type '" "double""'");
+  } 
+  arg4 = static_cast< double >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ReproduceDistancesObjective *)new faiss::ReproduceDistancesObjective(arg1,(double const *)arg2,(double const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ReproduceDistancesObjective, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_compute_mean_stdev(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  double *arg1 = (double *) 0 ;
+  size_t arg2 ;
+  double *arg3 = (double *) 0 ;
+  double *arg4 = (double *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReproduceDistancesObjective_compute_mean_stdev", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_double, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_compute_mean_stdev" "', argument " "1"" of type '" "double const *""'"); 
+  }
+  arg1 = reinterpret_cast< double * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReproduceDistancesObjective_compute_mean_stdev" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_double, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ReproduceDistancesObjective_compute_mean_stdev" "', argument " "3"" of type '" "double *""'"); 
+  }
+  arg3 = reinterpret_cast< double * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_double, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ReproduceDistancesObjective_compute_mean_stdev" "', argument " "4"" of type '" "double *""'"); 
+  }
+  arg4 = reinterpret_cast< double * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::ReproduceDistancesObjective::compute_mean_stdev((double const *)arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReproduceDistancesObjective_set_affine_target_dis(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  double *arg2 = (double *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReproduceDistancesObjective_set_affine_target_dis", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReproduceDistancesObjective_set_affine_target_dis" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_double, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ReproduceDistancesObjective_set_affine_target_dis" "', argument " "2"" of type '" "double const *""'"); 
+  }
+  arg2 = reinterpret_cast< double * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_affine_target_dis((double const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ReproduceDistancesObjective(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReproduceDistancesObjective *arg1 = (faiss::ReproduceDistancesObjective *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReproduceDistancesObjective, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ReproduceDistancesObjective" "', argument " "1"" of type '" "faiss::ReproduceDistancesObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReproduceDistancesObjective * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ReproduceDistancesObjective_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ReproduceDistancesObjective, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ReproduceDistancesObjective_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingOptimizer_obj_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingOptimizer *arg1 = (faiss::SimulatedAnnealingOptimizer *) 0 ;
+  faiss::PermutationObjective *arg2 = (faiss::PermutationObjective *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingOptimizer_obj_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingOptimizer_obj_set" "', argument " "1"" of type '" "faiss::SimulatedAnnealingOptimizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingOptimizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__PermutationObjective, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SimulatedAnnealingOptimizer_obj_set" "', argument " "2"" of type '" "faiss::PermutationObjective *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::PermutationObjective * >(argp2);
+  if (arg1) (arg1)->obj = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingOptimizer_obj_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingOptimizer *arg1 = (faiss::SimulatedAnnealingOptimizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::PermutationObjective *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingOptimizer_obj_get" "', argument " "1"" of type '" "faiss::SimulatedAnnealingOptimizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingOptimizer * >(argp1);
+  result = (faiss::PermutationObjective *) ((arg1)->obj);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PermutationObjective, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingOptimizer_n_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingOptimizer *arg1 = (faiss::SimulatedAnnealingOptimizer *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingOptimizer_n_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingOptimizer_n_set" "', argument " "1"" of type '" "faiss::SimulatedAnnealingOptimizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingOptimizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SimulatedAnnealingOptimizer_n_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->n = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingOptimizer_n_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingOptimizer *arg1 = (faiss::SimulatedAnnealingOptimizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingOptimizer_n_get" "', argument " "1"" of type '" "faiss::SimulatedAnnealingOptimizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingOptimizer * >(argp1);
+  result = (int) ((arg1)->n);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingOptimizer_logfile_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingOptimizer *arg1 = (faiss::SimulatedAnnealingOptimizer *) 0 ;
+  FILE *arg2 = (FILE *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingOptimizer_logfile_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingOptimizer_logfile_set" "', argument " "1"" of type '" "faiss::SimulatedAnnealingOptimizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingOptimizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_FILE, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SimulatedAnnealingOptimizer_logfile_set" "', argument " "2"" of type '" "FILE *""'"); 
+  }
+  arg2 = reinterpret_cast< FILE * >(argp2);
+  if (arg1) (arg1)->logfile = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingOptimizer_logfile_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingOptimizer *arg1 = (faiss::SimulatedAnnealingOptimizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  FILE *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingOptimizer_logfile_get" "', argument " "1"" of type '" "faiss::SimulatedAnnealingOptimizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingOptimizer * >(argp1);
+  result = (FILE *) ((arg1)->logfile);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_FILE, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_SimulatedAnnealingOptimizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PermutationObjective *arg1 = (faiss::PermutationObjective *) 0 ;
+  faiss::SimulatedAnnealingParameters *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::SimulatedAnnealingOptimizer *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_SimulatedAnnealingOptimizer", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PermutationObjective, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_SimulatedAnnealingOptimizer" "', argument " "1"" of type '" "faiss::PermutationObjective *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PermutationObjective * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__SimulatedAnnealingParameters,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_SimulatedAnnealingOptimizer" "', argument " "2"" of type '" "faiss::SimulatedAnnealingParameters const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_SimulatedAnnealingOptimizer" "', argument " "2"" of type '" "faiss::SimulatedAnnealingParameters const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::SimulatedAnnealingParameters * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::SimulatedAnnealingOptimizer *)new faiss::SimulatedAnnealingOptimizer(arg1,(faiss::SimulatedAnnealingParameters const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingOptimizer_rnd_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingOptimizer *arg1 = (faiss::SimulatedAnnealingOptimizer *) 0 ;
+  faiss::RandomGenerator *arg2 = (faiss::RandomGenerator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingOptimizer_rnd_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingOptimizer_rnd_set" "', argument " "1"" of type '" "faiss::SimulatedAnnealingOptimizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingOptimizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__RandomGenerator, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SimulatedAnnealingOptimizer_rnd_set" "', argument " "2"" of type '" "faiss::RandomGenerator *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::RandomGenerator * >(argp2);
+  if (arg1) (arg1)->rnd = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingOptimizer_rnd_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingOptimizer *arg1 = (faiss::SimulatedAnnealingOptimizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::RandomGenerator *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingOptimizer_rnd_get" "', argument " "1"" of type '" "faiss::SimulatedAnnealingOptimizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingOptimizer * >(argp1);
+  result = (faiss::RandomGenerator *) ((arg1)->rnd);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RandomGenerator, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingOptimizer_init_cost_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingOptimizer *arg1 = (faiss::SimulatedAnnealingOptimizer *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingOptimizer_init_cost_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingOptimizer_init_cost_set" "', argument " "1"" of type '" "faiss::SimulatedAnnealingOptimizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingOptimizer * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SimulatedAnnealingOptimizer_init_cost_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->init_cost = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingOptimizer_init_cost_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingOptimizer *arg1 = (faiss::SimulatedAnnealingOptimizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingOptimizer_init_cost_get" "', argument " "1"" of type '" "faiss::SimulatedAnnealingOptimizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingOptimizer * >(argp1);
+  result = (double) ((arg1)->init_cost);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingOptimizer_optimize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingOptimizer *arg1 = (faiss::SimulatedAnnealingOptimizer *) 0 ;
+  int *arg2 = (int *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingOptimizer_optimize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingOptimizer_optimize" "', argument " "1"" of type '" "faiss::SimulatedAnnealingOptimizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingOptimizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SimulatedAnnealingOptimizer_optimize" "', argument " "2"" of type '" "int *""'"); 
+  }
+  arg2 = reinterpret_cast< int * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)(arg1)->optimize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SimulatedAnnealingOptimizer_run_optimization(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingOptimizer *arg1 = (faiss::SimulatedAnnealingOptimizer *) 0 ;
+  int *arg2 = (int *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SimulatedAnnealingOptimizer_run_optimization", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SimulatedAnnealingOptimizer_run_optimization" "', argument " "1"" of type '" "faiss::SimulatedAnnealingOptimizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingOptimizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SimulatedAnnealingOptimizer_run_optimization" "', argument " "2"" of type '" "int *""'"); 
+  }
+  arg2 = reinterpret_cast< int * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)(arg1)->run_optimization(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_SimulatedAnnealingOptimizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SimulatedAnnealingOptimizer *arg1 = (faiss::SimulatedAnnealingOptimizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_SimulatedAnnealingOptimizer" "', argument " "1"" of type '" "faiss::SimulatedAnnealingOptimizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SimulatedAnnealingOptimizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *SimulatedAnnealingOptimizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__SimulatedAnnealingOptimizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *SimulatedAnnealingOptimizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_optimization_type_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  faiss::PolysemousTraining::Optimization_type_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PolysemousTraining_optimization_type_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_optimization_type_set" "', argument " "1"" of type '" "faiss::PolysemousTraining *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PolysemousTraining_optimization_type_set" "', argument " "2"" of type '" "faiss::PolysemousTraining::Optimization_type_t""'");
+  } 
+  arg2 = static_cast< faiss::PolysemousTraining::Optimization_type_t >(val2);
+  if (arg1) (arg1)->optimization_type = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_optimization_type_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::PolysemousTraining::Optimization_type_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_optimization_type_get" "', argument " "1"" of type '" "faiss::PolysemousTraining *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  result = (faiss::PolysemousTraining::Optimization_type_t) ((arg1)->optimization_type);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_ntrain_permutation_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PolysemousTraining_ntrain_permutation_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_ntrain_permutation_set" "', argument " "1"" of type '" "faiss::PolysemousTraining *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PolysemousTraining_ntrain_permutation_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->ntrain_permutation = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_ntrain_permutation_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_ntrain_permutation_get" "', argument " "1"" of type '" "faiss::PolysemousTraining *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  result = (int) ((arg1)->ntrain_permutation);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_dis_weight_factor_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PolysemousTraining_dis_weight_factor_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_dis_weight_factor_set" "', argument " "1"" of type '" "faiss::PolysemousTraining *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PolysemousTraining_dis_weight_factor_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->dis_weight_factor = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_dis_weight_factor_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_dis_weight_factor_get" "', argument " "1"" of type '" "faiss::PolysemousTraining *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  result = (double) ((arg1)->dis_weight_factor);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_max_memory_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PolysemousTraining_max_memory_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_max_memory_set" "', argument " "1"" of type '" "faiss::PolysemousTraining *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PolysemousTraining_max_memory_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->max_memory = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_max_memory_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_max_memory_get" "', argument " "1"" of type '" "faiss::PolysemousTraining *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  result = (size_t) ((arg1)->max_memory);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_log_pattern_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  std::string *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 = SWIG_OLDOBJ ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PolysemousTraining_log_pattern_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_log_pattern_set" "', argument " "1"" of type '" "faiss::PolysemousTraining *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  {
+    std::string *ptr = (std::string *)0;
+    res2 = SWIG_AsPtr_std_string(swig_obj[1], &ptr);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PolysemousTraining_log_pattern_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "PolysemousTraining_log_pattern_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    arg2 = ptr;
+  }
+  if (arg1) (arg1)->log_pattern = *arg2;
+  resultobj = SWIG_Py_Void();
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_log_pattern_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_log_pattern_get" "', argument " "1"" of type '" "faiss::PolysemousTraining *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  result = (std::string *) & ((arg1)->log_pattern);
+  resultobj = SWIG_From_std_string(static_cast< std::string >(*result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PolysemousTraining(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_PolysemousTraining", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::PolysemousTraining *)new faiss::PolysemousTraining();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PolysemousTraining, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_optimize_pq_for_hamming(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  faiss::ProductQuantizer *arg2 = 0 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PolysemousTraining_optimize_pq_for_hamming", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_optimize_pq_for_hamming" "', argument " "1"" of type '" "faiss::PolysemousTraining const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__ProductQuantizer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PolysemousTraining_optimize_pq_for_hamming" "', argument " "2"" of type '" "faiss::ProductQuantizer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "PolysemousTraining_optimize_pq_for_hamming" "', argument " "2"" of type '" "faiss::ProductQuantizer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProductQuantizer * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "PolysemousTraining_optimize_pq_for_hamming" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "PolysemousTraining_optimize_pq_for_hamming" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::PolysemousTraining const *)arg1)->optimize_pq_for_hamming(*arg2,arg3,(float const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_optimize_ranking(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  faiss::ProductQuantizer *arg2 = 0 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PolysemousTraining_optimize_ranking", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_optimize_ranking" "', argument " "1"" of type '" "faiss::PolysemousTraining const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__ProductQuantizer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PolysemousTraining_optimize_ranking" "', argument " "2"" of type '" "faiss::ProductQuantizer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "PolysemousTraining_optimize_ranking" "', argument " "2"" of type '" "faiss::ProductQuantizer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProductQuantizer * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "PolysemousTraining_optimize_ranking" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "PolysemousTraining_optimize_ranking" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::PolysemousTraining const *)arg1)->optimize_ranking(*arg2,arg3,(float const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_optimize_reproduce_distances(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  faiss::ProductQuantizer *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PolysemousTraining_optimize_reproduce_distances", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_optimize_reproduce_distances" "', argument " "1"" of type '" "faiss::PolysemousTraining const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__ProductQuantizer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PolysemousTraining_optimize_reproduce_distances" "', argument " "2"" of type '" "faiss::ProductQuantizer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "PolysemousTraining_optimize_reproduce_distances" "', argument " "2"" of type '" "faiss::ProductQuantizer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProductQuantizer * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::PolysemousTraining const *)arg1)->optimize_reproduce_distances(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PolysemousTraining_memory_usage_per_thread(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  faiss::ProductQuantizer *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PolysemousTraining_memory_usage_per_thread", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PolysemousTraining_memory_usage_per_thread" "', argument " "1"" of type '" "faiss::PolysemousTraining const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__ProductQuantizer,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PolysemousTraining_memory_usage_per_thread" "', argument " "2"" of type '" "faiss::ProductQuantizer const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "PolysemousTraining_memory_usage_per_thread" "', argument " "2"" of type '" "faiss::ProductQuantizer const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProductQuantizer * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::PolysemousTraining const *)arg1)->memory_usage_per_thread((faiss::ProductQuantizer const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_PolysemousTraining(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::PolysemousTraining *arg1 = (faiss::PolysemousTraining *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__PolysemousTraining, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_PolysemousTraining" "', argument " "1"" of type '" "faiss::PolysemousTraining *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::PolysemousTraining * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *PolysemousTraining_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__PolysemousTraining, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *PolysemousTraining_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexPQ_pq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  faiss::ProductQuantizer *arg2 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQ_pq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_pq_set" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexPQ_pq_set" "', argument " "2"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProductQuantizer * >(argp2);
+  if (arg1) (arg1)->pq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_pq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ProductQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_pq_get" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  result = (faiss::ProductQuantizer *)& ((arg1)->pq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPQ__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::MetricType arg4 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::IndexPQ *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexPQ" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexPQ" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexPQ" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexPQ" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexPQ *)new faiss::IndexPQ(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexPQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPQ__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexPQ *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexPQ" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexPQ" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexPQ" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexPQ *)new faiss::IndexPQ(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexPQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPQ__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexPQ *)new faiss::IndexPQ();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexPQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPQ(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexPQ", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexPQ__SWIG_2(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexPQ__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_IndexPQ__SWIG_0(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexPQ'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexPQ::IndexPQ(int,size_t,size_t,faiss::MetricType)\n"
+    "    faiss::IndexPQ::IndexPQ(int,size_t,size_t)\n"
+    "    faiss::IndexPQ::IndexPQ()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQ_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_train" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQ_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPQ_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQ_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_search" "', argument " "1"" of type '" "faiss::IndexPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQ_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPQ_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexPQ_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexPQ_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexPQ_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPQ const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_sa_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQ_sa_encode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_sa_encode" "', argument " "1"" of type '" "faiss::IndexPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQ_sa_encode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPQ_sa_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexPQ_sa_encode" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPQ const *)arg1)->sa_encode(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_sa_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQ_sa_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_sa_decode" "', argument " "1"" of type '" "faiss::IndexPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQ_sa_decode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPQ_sa_decode" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexPQ_sa_decode" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPQ const *)arg1)->sa_decode(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_get_distance_computer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DistanceComputer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_get_distance_computer" "', argument " "1"" of type '" "faiss::IndexPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::DistanceComputer *)((faiss::IndexPQ const *)arg1)->get_distance_computer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DistanceComputer, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_do_polysemous_training_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQ_do_polysemous_training_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_do_polysemous_training_set" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQ_do_polysemous_training_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->do_polysemous_training = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_do_polysemous_training_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_do_polysemous_training_get" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  result = (bool) ((arg1)->do_polysemous_training);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_polysemous_training_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  faiss::PolysemousTraining *arg2 = (faiss::PolysemousTraining *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQ_polysemous_training_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_polysemous_training_set" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexPQ_polysemous_training_set" "', argument " "2"" of type '" "faiss::PolysemousTraining *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::PolysemousTraining * >(argp2);
+  if (arg1) (arg1)->polysemous_training = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_polysemous_training_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::PolysemousTraining *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_polysemous_training_get" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  result = (faiss::PolysemousTraining *)& ((arg1)->polysemous_training);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_search_type_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  faiss::IndexPQ::Search_type_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQ_search_type_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_search_type_set" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQ_search_type_set" "', argument " "2"" of type '" "faiss::IndexPQ::Search_type_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexPQ::Search_type_t >(val2);
+  if (arg1) (arg1)->search_type = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_search_type_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IndexPQ::Search_type_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_search_type_get" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  result = (faiss::IndexPQ::Search_type_t) ((arg1)->search_type);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_encode_signs_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQ_encode_signs_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_encode_signs_set" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQ_encode_signs_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->encode_signs = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_encode_signs_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_encode_signs_get" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  result = (bool) ((arg1)->encode_signs);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_polysemous_ht_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQ_polysemous_ht_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_polysemous_ht_set" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQ_polysemous_ht_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->polysemous_ht = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_polysemous_ht_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_polysemous_ht_get" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  result = (int) ((arg1)->polysemous_ht);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_search_core_polysemous(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQ_search_core_polysemous", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_search_core_polysemous" "', argument " "1"" of type '" "faiss::IndexPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQ_search_core_polysemous" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPQ_search_core_polysemous" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexPQ_search_core_polysemous" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexPQ_search_core_polysemous" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexPQ_search_core_polysemous" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPQ const *)arg1)->search_core_polysemous(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_hamming_distance_histogram(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  int64_t *arg6 = (int64_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQ_hamming_distance_histogram", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_hamming_distance_histogram" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQ_hamming_distance_histogram" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPQ_hamming_distance_histogram" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexPQ_hamming_distance_histogram" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexPQ_hamming_distance_histogram" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexPQ_hamming_distance_histogram" "', argument " "6"" of type '" "int64_t *""'"); 
+  }
+  arg6 = reinterpret_cast< int64_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->hamming_distance_histogram(arg2,(float const *)arg3,arg4,(float const *)arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQ_hamming_distance_table(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  int32_t *arg4 = (int32_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQ_hamming_distance_table", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQ_hamming_distance_table" "', argument " "1"" of type '" "faiss::IndexPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQ_hamming_distance_table" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPQ_hamming_distance_table" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexPQ_hamming_distance_table" "', argument " "4"" of type '" "int32_t *""'"); 
+  }
+  arg4 = reinterpret_cast< int32_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPQ const *)arg1)->hamming_distance_table(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexPQ(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = (faiss::IndexPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQ, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexPQ" "', argument " "1"" of type '" "faiss::IndexPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexPQ_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexPQ, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexPQ_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexPQStats_nq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQStats *arg1 = (faiss::IndexPQStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQStats_nq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQStats_nq_set" "', argument " "1"" of type '" "faiss::IndexPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQStats_nq_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nq = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQStats_nq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQStats *arg1 = (faiss::IndexPQStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQStats_nq_get" "', argument " "1"" of type '" "faiss::IndexPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQStats * >(argp1);
+  result = (size_t) ((arg1)->nq);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQStats_ncode_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQStats *arg1 = (faiss::IndexPQStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQStats_ncode_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQStats_ncode_set" "', argument " "1"" of type '" "faiss::IndexPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQStats_ncode_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->ncode = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQStats_ncode_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQStats *arg1 = (faiss::IndexPQStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQStats_ncode_get" "', argument " "1"" of type '" "faiss::IndexPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQStats * >(argp1);
+  result = (size_t) ((arg1)->ncode);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQStats_n_hamming_pass_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQStats *arg1 = (faiss::IndexPQStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQStats_n_hamming_pass_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQStats_n_hamming_pass_set" "', argument " "1"" of type '" "faiss::IndexPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQStats_n_hamming_pass_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->n_hamming_pass = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQStats_n_hamming_pass_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQStats *arg1 = (faiss::IndexPQStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQStats_n_hamming_pass_get" "', argument " "1"" of type '" "faiss::IndexPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQStats * >(argp1);
+  result = (size_t) ((arg1)->n_hamming_pass);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPQStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQStats *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_IndexPQStats", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexPQStats *)new faiss::IndexPQStats();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexPQStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQStats_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQStats *arg1 = (faiss::IndexPQStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQStats_reset" "', argument " "1"" of type '" "faiss::IndexPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQStats * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexPQStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQStats *arg1 = (faiss::IndexPQStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQStats, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexPQStats" "', argument " "1"" of type '" "faiss::IndexPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQStats * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexPQStats_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexPQStats, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexPQStats_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN int Swig_var_indexPQ_stats_set(PyObject *_val) {
+  {
+    void *argp = 0;
+    int res = SWIG_ConvertPtr(_val, &argp, SWIGTYPE_p_faiss__IndexPQStats,  0  | 0);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::indexPQ_stats""' of type '""faiss::IndexPQStats""'");
+    }
+    if (!argp) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in variable '""faiss::indexPQ_stats""' of type '""faiss::IndexPQStats""'");
+    } else {
+      faiss::IndexPQStats * temp;
+      temp  = reinterpret_cast< faiss::IndexPQStats * >(argp);
+      faiss::indexPQ_stats = *temp;
+      if (SWIG_IsNewObj(res)) delete temp;
+    }
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_indexPQ_stats_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_NewPointerObj(SWIG_as_voidptr(&faiss::indexPQ_stats), SWIGTYPE_p_faiss__IndexPQStats,  0 );
+  return pyobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_MultiIndexQuantizer_pq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer *arg1 = (faiss::MultiIndexQuantizer *) 0 ;
+  faiss::ProductQuantizer *arg2 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MultiIndexQuantizer_pq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MultiIndexQuantizer_pq_set" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "MultiIndexQuantizer_pq_set" "', argument " "2"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProductQuantizer * >(argp2);
+  if (arg1) (arg1)->pq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MultiIndexQuantizer_pq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer *arg1 = (faiss::MultiIndexQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ProductQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MultiIndexQuantizer_pq_get" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer * >(argp1);
+  result = (faiss::ProductQuantizer *)& ((arg1)->pq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_MultiIndexQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::MultiIndexQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_MultiIndexQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_MultiIndexQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_MultiIndexQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::MultiIndexQuantizer *)new faiss::MultiIndexQuantizer(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__MultiIndexQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MultiIndexQuantizer_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer *arg1 = (faiss::MultiIndexQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MultiIndexQuantizer_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MultiIndexQuantizer_train" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MultiIndexQuantizer_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "MultiIndexQuantizer_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MultiIndexQuantizer_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer *arg1 = (faiss::MultiIndexQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MultiIndexQuantizer_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MultiIndexQuantizer_search" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MultiIndexQuantizer_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "MultiIndexQuantizer_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "MultiIndexQuantizer_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "MultiIndexQuantizer_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "MultiIndexQuantizer_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::MultiIndexQuantizer const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MultiIndexQuantizer_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer *arg1 = (faiss::MultiIndexQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MultiIndexQuantizer_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MultiIndexQuantizer_add" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MultiIndexQuantizer_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "MultiIndexQuantizer_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MultiIndexQuantizer_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer *arg1 = (faiss::MultiIndexQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MultiIndexQuantizer_reset" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_MultiIndexQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::MultiIndexQuantizer *)new faiss::MultiIndexQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__MultiIndexQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_MultiIndexQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_MultiIndexQuantizer", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_MultiIndexQuantizer__SWIG_1(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_MultiIndexQuantizer__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_MultiIndexQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::MultiIndexQuantizer::MultiIndexQuantizer(int,size_t,size_t)\n"
+    "    faiss::MultiIndexQuantizer::MultiIndexQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_MultiIndexQuantizer_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer *arg1 = (faiss::MultiIndexQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MultiIndexQuantizer_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MultiIndexQuantizer_reconstruct" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MultiIndexQuantizer_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "MultiIndexQuantizer_reconstruct" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::MultiIndexQuantizer const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_MultiIndexQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer *arg1 = (faiss::MultiIndexQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_MultiIndexQuantizer" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *MultiIndexQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__MultiIndexQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *MultiIndexQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_MultiIndexQuantizer2_assign_indexes_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer2 *arg1 = (faiss::MultiIndexQuantizer2 *) 0 ;
+  std::vector< faiss::Index * > *arg2 = (std::vector< faiss::Index * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MultiIndexQuantizer2_assign_indexes_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer2, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MultiIndexQuantizer2_assign_indexes_set" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer2 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer2 * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__Index_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "MultiIndexQuantizer2_assign_indexes_set" "', argument " "2"" of type '" "std::vector< faiss::Index * > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::Index * > * >(argp2);
+  if (arg1) (arg1)->assign_indexes = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MultiIndexQuantizer2_assign_indexes_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer2 *arg1 = (faiss::MultiIndexQuantizer2 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::Index * > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer2, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MultiIndexQuantizer2_assign_indexes_get" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer2 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer2 * >(argp1);
+  result = (std::vector< faiss::Index * > *)& ((arg1)->assign_indexes);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__Index_p_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MultiIndexQuantizer2_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer2 *arg1 = (faiss::MultiIndexQuantizer2 *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MultiIndexQuantizer2_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer2, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MultiIndexQuantizer2_own_fields_set" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer2 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer2 * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MultiIndexQuantizer2_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MultiIndexQuantizer2_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer2 *arg1 = (faiss::MultiIndexQuantizer2 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer2, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MultiIndexQuantizer2_own_fields_get" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer2 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer2 * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_MultiIndexQuantizer2__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::Index **arg4 = (faiss::Index **) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  faiss::MultiIndexQuantizer2 *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_MultiIndexQuantizer2" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_MultiIndexQuantizer2" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_MultiIndexQuantizer2" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "new_MultiIndexQuantizer2" "', argument " "4"" of type '" "faiss::Index **""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index ** >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::MultiIndexQuantizer2 *)new faiss::MultiIndexQuantizer2(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__MultiIndexQuantizer2, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_MultiIndexQuantizer2__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  faiss::Index *arg3 = (faiss::Index *) 0 ;
+  faiss::Index *arg4 = (faiss::Index *) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  faiss::MultiIndexQuantizer2 *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_MultiIndexQuantizer2" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_MultiIndexQuantizer2" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_MultiIndexQuantizer2" "', argument " "3"" of type '" "faiss::Index *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::Index * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "new_MultiIndexQuantizer2" "', argument " "4"" of type '" "faiss::Index *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::MultiIndexQuantizer2 *)new faiss::MultiIndexQuantizer2(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__MultiIndexQuantizer2, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_MultiIndexQuantizer2(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_MultiIndexQuantizer2", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_faiss__Index, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_faiss__Index, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_new_MultiIndexQuantizer2__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_p_faiss__Index, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_new_MultiIndexQuantizer2__SWIG_0(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_MultiIndexQuantizer2'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::MultiIndexQuantizer2::MultiIndexQuantizer2(int,size_t,size_t,faiss::Index **)\n"
+    "    faiss::MultiIndexQuantizer2::MultiIndexQuantizer2(int,size_t,faiss::Index *,faiss::Index *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_MultiIndexQuantizer2_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer2 *arg1 = (faiss::MultiIndexQuantizer2 *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MultiIndexQuantizer2_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer2, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MultiIndexQuantizer2_train" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer2 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer2 * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MultiIndexQuantizer2_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "MultiIndexQuantizer2_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MultiIndexQuantizer2_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer2 *arg1 = (faiss::MultiIndexQuantizer2 *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MultiIndexQuantizer2_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer2, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MultiIndexQuantizer2_search" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer2 const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer2 * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MultiIndexQuantizer2_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "MultiIndexQuantizer2_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "MultiIndexQuantizer2_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "MultiIndexQuantizer2_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "MultiIndexQuantizer2_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::MultiIndexQuantizer2 const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_MultiIndexQuantizer2(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MultiIndexQuantizer2 *arg1 = (faiss::MultiIndexQuantizer2 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MultiIndexQuantizer2, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_MultiIndexQuantizer2" "', argument " "1"" of type '" "faiss::MultiIndexQuantizer2 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MultiIndexQuantizer2 * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *MultiIndexQuantizer2_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__MultiIndexQuantizer2, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *MultiIndexQuantizer2_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexAdditiveQuantizer_aq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexAdditiveQuantizer *arg1 = (faiss::IndexAdditiveQuantizer *) 0 ;
+  faiss::AdditiveQuantizer *arg2 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexAdditiveQuantizer_aq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexAdditiveQuantizer_aq_set" "', argument " "1"" of type '" "faiss::IndexAdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexAdditiveQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__AdditiveQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexAdditiveQuantizer_aq_set" "', argument " "2"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp2);
+  if (arg1) (arg1)->aq = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexAdditiveQuantizer_aq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexAdditiveQuantizer *arg1 = (faiss::IndexAdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AdditiveQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexAdditiveQuantizer_aq_get" "', argument " "1"" of type '" "faiss::IndexAdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexAdditiveQuantizer * >(argp1);
+  result = (faiss::AdditiveQuantizer *) ((arg1)->aq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexAdditiveQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  faiss::AdditiveQuantizer *arg2 = (faiss::AdditiveQuantizer *) 0 ;
+  faiss::MetricType arg3 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexAdditiveQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexAdditiveQuantizer" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_IndexAdditiveQuantizer" "', argument " "2"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexAdditiveQuantizer" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexAdditiveQuantizer *)new faiss::IndexAdditiveQuantizer(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexAdditiveQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexAdditiveQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  faiss::AdditiveQuantizer *arg2 = (faiss::AdditiveQuantizer *) 0 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::IndexAdditiveQuantizer *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexAdditiveQuantizer" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_IndexAdditiveQuantizer" "', argument " "2"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexAdditiveQuantizer *)new faiss::IndexAdditiveQuantizer(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexAdditiveQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexAdditiveQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexAdditiveQuantizer *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexAdditiveQuantizer" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexAdditiveQuantizer *)new faiss::IndexAdditiveQuantizer(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexAdditiveQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexAdditiveQuantizer__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexAdditiveQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexAdditiveQuantizer *)new faiss::IndexAdditiveQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexAdditiveQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexAdditiveQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexAdditiveQuantizer", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexAdditiveQuantizer__SWIG_3(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexAdditiveQuantizer__SWIG_2(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__AdditiveQuantizer, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_IndexAdditiveQuantizer__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__AdditiveQuantizer, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexAdditiveQuantizer__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexAdditiveQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexAdditiveQuantizer::IndexAdditiveQuantizer(faiss::Index::idx_t,faiss::AdditiveQuantizer *,faiss::MetricType)\n"
+    "    faiss::IndexAdditiveQuantizer::IndexAdditiveQuantizer(faiss::Index::idx_t,faiss::AdditiveQuantizer *)\n"
+    "    faiss::IndexAdditiveQuantizer::IndexAdditiveQuantizer(faiss::Index::idx_t)\n"
+    "    faiss::IndexAdditiveQuantizer::IndexAdditiveQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexAdditiveQuantizer_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexAdditiveQuantizer *arg1 = (faiss::IndexAdditiveQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexAdditiveQuantizer_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexAdditiveQuantizer_search" "', argument " "1"" of type '" "faiss::IndexAdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexAdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexAdditiveQuantizer_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexAdditiveQuantizer_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexAdditiveQuantizer_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexAdditiveQuantizer_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexAdditiveQuantizer_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexAdditiveQuantizer const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexAdditiveQuantizer_sa_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexAdditiveQuantizer *arg1 = (faiss::IndexAdditiveQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexAdditiveQuantizer_sa_encode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexAdditiveQuantizer_sa_encode" "', argument " "1"" of type '" "faiss::IndexAdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexAdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexAdditiveQuantizer_sa_encode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexAdditiveQuantizer_sa_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexAdditiveQuantizer_sa_encode" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexAdditiveQuantizer const *)arg1)->sa_encode(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexAdditiveQuantizer_sa_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexAdditiveQuantizer *arg1 = (faiss::IndexAdditiveQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexAdditiveQuantizer_sa_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexAdditiveQuantizer_sa_decode" "', argument " "1"" of type '" "faiss::IndexAdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexAdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexAdditiveQuantizer_sa_decode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexAdditiveQuantizer_sa_decode" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexAdditiveQuantizer_sa_decode" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexAdditiveQuantizer const *)arg1)->sa_decode(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexAdditiveQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexAdditiveQuantizer *arg1 = (faiss::IndexAdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexAdditiveQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexAdditiveQuantizer" "', argument " "1"" of type '" "faiss::IndexAdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexAdditiveQuantizer * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexAdditiveQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexAdditiveQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexAdditiveQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexResidualQuantizer_rq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexResidualQuantizer *arg1 = (faiss::IndexResidualQuantizer *) 0 ;
+  faiss::ResidualQuantizer *arg2 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexResidualQuantizer_rq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexResidualQuantizer_rq_set" "', argument " "1"" of type '" "faiss::IndexResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexResidualQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexResidualQuantizer_rq_set" "', argument " "2"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ResidualQuantizer * >(argp2);
+  if (arg1) (arg1)->rq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexResidualQuantizer_rq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexResidualQuantizer *arg1 = (faiss::IndexResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ResidualQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexResidualQuantizer_rq_get" "', argument " "1"" of type '" "faiss::IndexResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexResidualQuantizer * >(argp1);
+  result = (faiss::ResidualQuantizer *)& ((arg1)->rq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexResidualQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::MetricType arg4 ;
+  faiss::IndexAdditiveQuantizer::Search_type_t arg5 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  faiss::IndexResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexResidualQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexResidualQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexResidualQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexResidualQuantizer" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexResidualQuantizer" "', argument " "5"" of type '" "faiss::IndexAdditiveQuantizer::Search_type_t""'");
+  } 
+  arg5 = static_cast< faiss::IndexAdditiveQuantizer::Search_type_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexResidualQuantizer *)new faiss::IndexResidualQuantizer(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexResidualQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::MetricType arg4 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::IndexResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexResidualQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexResidualQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexResidualQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexResidualQuantizer" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexResidualQuantizer *)new faiss::IndexResidualQuantizer(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexResidualQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexResidualQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexResidualQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexResidualQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexResidualQuantizer *)new faiss::IndexResidualQuantizer(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexResidualQuantizer__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  std::vector< size_t > *arg2 = 0 ;
+  faiss::MetricType arg3 ;
+  faiss::IndexAdditiveQuantizer::Search_type_t arg4 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::IndexResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexResidualQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_unsigned_long_t,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_IndexResidualQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_IndexResidualQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< size_t > * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexResidualQuantizer" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexResidualQuantizer" "', argument " "4"" of type '" "faiss::IndexAdditiveQuantizer::Search_type_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexAdditiveQuantizer::Search_type_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexResidualQuantizer *)new faiss::IndexResidualQuantizer(arg1,(std::vector< size_t > const &)*arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexResidualQuantizer__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  std::vector< size_t > *arg2 = 0 ;
+  faiss::MetricType arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexResidualQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_unsigned_long_t,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_IndexResidualQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_IndexResidualQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< size_t > * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexResidualQuantizer" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexResidualQuantizer *)new faiss::IndexResidualQuantizer(arg1,(std::vector< size_t > const &)*arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexResidualQuantizer__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  std::vector< size_t > *arg2 = 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::IndexResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexResidualQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_unsigned_long_t,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_IndexResidualQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_IndexResidualQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< size_t > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexResidualQuantizer *)new faiss::IndexResidualQuantizer(arg1,(std::vector< size_t > const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexResidualQuantizer__SWIG_6(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexResidualQuantizer *)new faiss::IndexResidualQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexResidualQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexResidualQuantizer", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexResidualQuantizer__SWIG_6(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_std__vectorT_unsigned_long_t, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_IndexResidualQuantizer__SWIG_5(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_std__vectorT_unsigned_long_t, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexResidualQuantizer__SWIG_4(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexResidualQuantizer__SWIG_2(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_std__vectorT_unsigned_long_t, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_IndexResidualQuantizer__SWIG_3(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_IndexResidualQuantizer__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_IndexResidualQuantizer__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexResidualQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexResidualQuantizer::IndexResidualQuantizer(int,size_t,size_t,faiss::MetricType,faiss::IndexAdditiveQuantizer::Search_type_t)\n"
+    "    faiss::IndexResidualQuantizer::IndexResidualQuantizer(int,size_t,size_t,faiss::MetricType)\n"
+    "    faiss::IndexResidualQuantizer::IndexResidualQuantizer(int,size_t,size_t)\n"
+    "    faiss::IndexResidualQuantizer::IndexResidualQuantizer(int,std::vector< size_t > const &,faiss::MetricType,faiss::IndexAdditiveQuantizer::Search_type_t)\n"
+    "    faiss::IndexResidualQuantizer::IndexResidualQuantizer(int,std::vector< size_t > const &,faiss::MetricType)\n"
+    "    faiss::IndexResidualQuantizer::IndexResidualQuantizer(int,std::vector< size_t > const &)\n"
+    "    faiss::IndexResidualQuantizer::IndexResidualQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexResidualQuantizer_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexResidualQuantizer *arg1 = (faiss::IndexResidualQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexResidualQuantizer_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexResidualQuantizer_train" "', argument " "1"" of type '" "faiss::IndexResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexResidualQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexResidualQuantizer_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexResidualQuantizer_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexResidualQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexResidualQuantizer *arg1 = (faiss::IndexResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexResidualQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexResidualQuantizer" "', argument " "1"" of type '" "faiss::IndexResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexResidualQuantizer * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexResidualQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexResidualQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexResidualQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexLocalSearchQuantizer_lsq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLocalSearchQuantizer *arg1 = (faiss::IndexLocalSearchQuantizer *) 0 ;
+  faiss::LocalSearchQuantizer *arg2 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLocalSearchQuantizer_lsq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLocalSearchQuantizer_lsq_set" "', argument " "1"" of type '" "faiss::IndexLocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexLocalSearchQuantizer_lsq_set" "', argument " "2"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp2);
+  if (arg1) (arg1)->lsq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLocalSearchQuantizer_lsq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLocalSearchQuantizer *arg1 = (faiss::IndexLocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::LocalSearchQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLocalSearchQuantizer_lsq_get" "', argument " "1"" of type '" "faiss::IndexLocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLocalSearchQuantizer * >(argp1);
+  result = (faiss::LocalSearchQuantizer *)& ((arg1)->lsq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexLocalSearchQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::MetricType arg4 ;
+  faiss::IndexAdditiveQuantizer::Search_type_t arg5 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  faiss::IndexLocalSearchQuantizer *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexLocalSearchQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexLocalSearchQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexLocalSearchQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexLocalSearchQuantizer" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexLocalSearchQuantizer" "', argument " "5"" of type '" "faiss::IndexAdditiveQuantizer::Search_type_t""'");
+  } 
+  arg5 = static_cast< faiss::IndexAdditiveQuantizer::Search_type_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexLocalSearchQuantizer *)new faiss::IndexLocalSearchQuantizer(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexLocalSearchQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexLocalSearchQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::MetricType arg4 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::IndexLocalSearchQuantizer *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexLocalSearchQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexLocalSearchQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexLocalSearchQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexLocalSearchQuantizer" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexLocalSearchQuantizer *)new faiss::IndexLocalSearchQuantizer(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexLocalSearchQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexLocalSearchQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexLocalSearchQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexLocalSearchQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexLocalSearchQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexLocalSearchQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexLocalSearchQuantizer *)new faiss::IndexLocalSearchQuantizer(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexLocalSearchQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexLocalSearchQuantizer__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexLocalSearchQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexLocalSearchQuantizer *)new faiss::IndexLocalSearchQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexLocalSearchQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexLocalSearchQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexLocalSearchQuantizer", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexLocalSearchQuantizer__SWIG_3(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexLocalSearchQuantizer__SWIG_2(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_IndexLocalSearchQuantizer__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_IndexLocalSearchQuantizer__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexLocalSearchQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexLocalSearchQuantizer::IndexLocalSearchQuantizer(int,size_t,size_t,faiss::MetricType,faiss::IndexAdditiveQuantizer::Search_type_t)\n"
+    "    faiss::IndexLocalSearchQuantizer::IndexLocalSearchQuantizer(int,size_t,size_t,faiss::MetricType)\n"
+    "    faiss::IndexLocalSearchQuantizer::IndexLocalSearchQuantizer(int,size_t,size_t)\n"
+    "    faiss::IndexLocalSearchQuantizer::IndexLocalSearchQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLocalSearchQuantizer_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLocalSearchQuantizer *arg1 = (faiss::IndexLocalSearchQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLocalSearchQuantizer_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLocalSearchQuantizer_train" "', argument " "1"" of type '" "faiss::IndexLocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLocalSearchQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLocalSearchQuantizer_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexLocalSearchQuantizer_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexLocalSearchQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLocalSearchQuantizer *arg1 = (faiss::IndexLocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexLocalSearchQuantizer" "', argument " "1"" of type '" "faiss::IndexLocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLocalSearchQuantizer * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexLocalSearchQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexLocalSearchQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexLocalSearchQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_AdditiveCoarseQuantizer_aq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveCoarseQuantizer *arg1 = (faiss::AdditiveCoarseQuantizer *) 0 ;
+  faiss::AdditiveQuantizer *arg2 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveCoarseQuantizer_aq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveCoarseQuantizer_aq_set" "', argument " "1"" of type '" "faiss::AdditiveCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveCoarseQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__AdditiveQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AdditiveCoarseQuantizer_aq_set" "', argument " "2"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp2);
+  if (arg1) (arg1)->aq = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveCoarseQuantizer_aq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveCoarseQuantizer *arg1 = (faiss::AdditiveCoarseQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AdditiveQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveCoarseQuantizer_aq_get" "', argument " "1"" of type '" "faiss::AdditiveCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveCoarseQuantizer * >(argp1);
+  result = (faiss::AdditiveQuantizer *) ((arg1)->aq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AdditiveCoarseQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  faiss::AdditiveQuantizer *arg2 = (faiss::AdditiveQuantizer *) 0 ;
+  faiss::MetricType arg3 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::AdditiveCoarseQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_AdditiveCoarseQuantizer" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_AdditiveCoarseQuantizer" "', argument " "2"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_AdditiveCoarseQuantizer" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::AdditiveCoarseQuantizer *)new faiss::AdditiveCoarseQuantizer(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AdditiveCoarseQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  faiss::AdditiveQuantizer *arg2 = (faiss::AdditiveQuantizer *) 0 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::AdditiveCoarseQuantizer *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_AdditiveCoarseQuantizer" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_AdditiveCoarseQuantizer" "', argument " "2"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::AdditiveCoarseQuantizer *)new faiss::AdditiveCoarseQuantizer(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AdditiveCoarseQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  faiss::AdditiveCoarseQuantizer *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_AdditiveCoarseQuantizer" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::AdditiveCoarseQuantizer *)new faiss::AdditiveCoarseQuantizer(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AdditiveCoarseQuantizer__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveCoarseQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::AdditiveCoarseQuantizer *)new faiss::AdditiveCoarseQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AdditiveCoarseQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_AdditiveCoarseQuantizer", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_AdditiveCoarseQuantizer__SWIG_3(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_AdditiveCoarseQuantizer__SWIG_2(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__AdditiveQuantizer, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_AdditiveCoarseQuantizer__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__AdditiveQuantizer, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_AdditiveCoarseQuantizer__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_AdditiveCoarseQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::AdditiveCoarseQuantizer::AdditiveCoarseQuantizer(faiss::Index::idx_t,faiss::AdditiveQuantizer *,faiss::MetricType)\n"
+    "    faiss::AdditiveCoarseQuantizer::AdditiveCoarseQuantizer(faiss::Index::idx_t,faiss::AdditiveQuantizer *)\n"
+    "    faiss::AdditiveCoarseQuantizer::AdditiveCoarseQuantizer(faiss::Index::idx_t)\n"
+    "    faiss::AdditiveCoarseQuantizer::AdditiveCoarseQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveCoarseQuantizer_centroid_norms_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveCoarseQuantizer *arg1 = (faiss::AdditiveCoarseQuantizer *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveCoarseQuantizer_centroid_norms_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveCoarseQuantizer_centroid_norms_set" "', argument " "1"" of type '" "faiss::AdditiveCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveCoarseQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AdditiveCoarseQuantizer_centroid_norms_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->centroid_norms = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveCoarseQuantizer_centroid_norms_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveCoarseQuantizer *arg1 = (faiss::AdditiveCoarseQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveCoarseQuantizer_centroid_norms_get" "', argument " "1"" of type '" "faiss::AdditiveCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveCoarseQuantizer * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->centroid_norms);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveCoarseQuantizer_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveCoarseQuantizer *arg1 = (faiss::AdditiveCoarseQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveCoarseQuantizer_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveCoarseQuantizer_add" "', argument " "1"" of type '" "faiss::AdditiveCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveCoarseQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveCoarseQuantizer_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveCoarseQuantizer_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveCoarseQuantizer_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveCoarseQuantizer *arg1 = (faiss::AdditiveCoarseQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveCoarseQuantizer_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveCoarseQuantizer_search" "', argument " "1"" of type '" "faiss::AdditiveCoarseQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveCoarseQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveCoarseQuantizer_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveCoarseQuantizer_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "AdditiveCoarseQuantizer_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "AdditiveCoarseQuantizer_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "AdditiveCoarseQuantizer_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveCoarseQuantizer const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveCoarseQuantizer_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveCoarseQuantizer *arg1 = (faiss::AdditiveCoarseQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveCoarseQuantizer_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveCoarseQuantizer_reconstruct" "', argument " "1"" of type '" "faiss::AdditiveCoarseQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveCoarseQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveCoarseQuantizer_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveCoarseQuantizer_reconstruct" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::AdditiveCoarseQuantizer const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveCoarseQuantizer_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveCoarseQuantizer *arg1 = (faiss::AdditiveCoarseQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AdditiveCoarseQuantizer_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveCoarseQuantizer_train" "', argument " "1"" of type '" "faiss::AdditiveCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveCoarseQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AdditiveCoarseQuantizer_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AdditiveCoarseQuantizer_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AdditiveCoarseQuantizer_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveCoarseQuantizer *arg1 = (faiss::AdditiveCoarseQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AdditiveCoarseQuantizer_reset" "', argument " "1"" of type '" "faiss::AdditiveCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveCoarseQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_AdditiveCoarseQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveCoarseQuantizer *arg1 = (faiss::AdditiveCoarseQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_AdditiveCoarseQuantizer" "', argument " "1"" of type '" "faiss::AdditiveCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveCoarseQuantizer * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *AdditiveCoarseQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__AdditiveCoarseQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *AdditiveCoarseQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ResidualCoarseQuantizer_rq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualCoarseQuantizer *arg1 = (faiss::ResidualCoarseQuantizer *) 0 ;
+  faiss::ResidualQuantizer *arg2 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualCoarseQuantizer_rq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualCoarseQuantizer_rq_set" "', argument " "1"" of type '" "faiss::ResidualCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualCoarseQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ResidualCoarseQuantizer_rq_set" "', argument " "2"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ResidualQuantizer * >(argp2);
+  if (arg1) (arg1)->rq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualCoarseQuantizer_rq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualCoarseQuantizer *arg1 = (faiss::ResidualCoarseQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ResidualQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualCoarseQuantizer_rq_get" "', argument " "1"" of type '" "faiss::ResidualCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualCoarseQuantizer * >(argp1);
+  result = (faiss::ResidualQuantizer *)& ((arg1)->rq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualCoarseQuantizer_beam_factor_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualCoarseQuantizer *arg1 = (faiss::ResidualCoarseQuantizer *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualCoarseQuantizer_beam_factor_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualCoarseQuantizer_beam_factor_set" "', argument " "1"" of type '" "faiss::ResidualCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualCoarseQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualCoarseQuantizer_beam_factor_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->beam_factor = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualCoarseQuantizer_beam_factor_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualCoarseQuantizer *arg1 = (faiss::ResidualCoarseQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualCoarseQuantizer_beam_factor_get" "', argument " "1"" of type '" "faiss::ResidualCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualCoarseQuantizer * >(argp1);
+  result = (float) ((arg1)->beam_factor);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualCoarseQuantizer_set_beam_factor(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualCoarseQuantizer *arg1 = (faiss::ResidualCoarseQuantizer *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualCoarseQuantizer_set_beam_factor", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualCoarseQuantizer_set_beam_factor" "', argument " "1"" of type '" "faiss::ResidualCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualCoarseQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualCoarseQuantizer_set_beam_factor" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_beam_factor(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ResidualCoarseQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::MetricType arg4 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::ResidualCoarseQuantizer *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ResidualCoarseQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ResidualCoarseQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_ResidualCoarseQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_ResidualCoarseQuantizer" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ResidualCoarseQuantizer *)new faiss::ResidualCoarseQuantizer(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ResidualCoarseQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ResidualCoarseQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::ResidualCoarseQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ResidualCoarseQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ResidualCoarseQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_ResidualCoarseQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ResidualCoarseQuantizer *)new faiss::ResidualCoarseQuantizer(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ResidualCoarseQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ResidualCoarseQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  std::vector< size_t > *arg2 = 0 ;
+  faiss::MetricType arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::ResidualCoarseQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ResidualCoarseQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_unsigned_long_t,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_ResidualCoarseQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ResidualCoarseQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< size_t > * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_ResidualCoarseQuantizer" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ResidualCoarseQuantizer *)new faiss::ResidualCoarseQuantizer(arg1,(std::vector< size_t > const &)*arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ResidualCoarseQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ResidualCoarseQuantizer__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  std::vector< size_t > *arg2 = 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::ResidualCoarseQuantizer *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ResidualCoarseQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_unsigned_long_t,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_ResidualCoarseQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ResidualCoarseQuantizer" "', argument " "2"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< size_t > * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ResidualCoarseQuantizer *)new faiss::ResidualCoarseQuantizer(arg1,(std::vector< size_t > const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ResidualCoarseQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ResidualCoarseQuantizer_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualCoarseQuantizer *arg1 = (faiss::ResidualCoarseQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ResidualCoarseQuantizer_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ResidualCoarseQuantizer_search" "', argument " "1"" of type '" "faiss::ResidualCoarseQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualCoarseQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ResidualCoarseQuantizer_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ResidualCoarseQuantizer_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ResidualCoarseQuantizer_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "ResidualCoarseQuantizer_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ResidualCoarseQuantizer_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ResidualCoarseQuantizer const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ResidualCoarseQuantizer__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::ResidualCoarseQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ResidualCoarseQuantizer *)new faiss::ResidualCoarseQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ResidualCoarseQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ResidualCoarseQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_ResidualCoarseQuantizer", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_ResidualCoarseQuantizer__SWIG_4(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_std__vectorT_unsigned_long_t, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_ResidualCoarseQuantizer__SWIG_3(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_std__vectorT_unsigned_long_t, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_ResidualCoarseQuantizer__SWIG_2(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_ResidualCoarseQuantizer__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_ResidualCoarseQuantizer__SWIG_0(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_ResidualCoarseQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ResidualCoarseQuantizer::ResidualCoarseQuantizer(int,size_t,size_t,faiss::MetricType)\n"
+    "    faiss::ResidualCoarseQuantizer::ResidualCoarseQuantizer(int,size_t,size_t)\n"
+    "    faiss::ResidualCoarseQuantizer::ResidualCoarseQuantizer(int,std::vector< size_t > const &,faiss::MetricType)\n"
+    "    faiss::ResidualCoarseQuantizer::ResidualCoarseQuantizer(int,std::vector< size_t > const &)\n"
+    "    faiss::ResidualCoarseQuantizer::ResidualCoarseQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ResidualCoarseQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ResidualCoarseQuantizer *arg1 = (faiss::ResidualCoarseQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ResidualCoarseQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ResidualCoarseQuantizer" "', argument " "1"" of type '" "faiss::ResidualCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ResidualCoarseQuantizer * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ResidualCoarseQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ResidualCoarseQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ResidualCoarseQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_LocalSearchCoarseQuantizer_lsq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchCoarseQuantizer *arg1 = (faiss::LocalSearchCoarseQuantizer *) 0 ;
+  faiss::LocalSearchQuantizer *arg2 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "LocalSearchCoarseQuantizer_lsq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchCoarseQuantizer_lsq_set" "', argument " "1"" of type '" "faiss::LocalSearchCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchCoarseQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "LocalSearchCoarseQuantizer_lsq_set" "', argument " "2"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp2);
+  if (arg1) (arg1)->lsq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_LocalSearchCoarseQuantizer_lsq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchCoarseQuantizer *arg1 = (faiss::LocalSearchCoarseQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::LocalSearchQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "LocalSearchCoarseQuantizer_lsq_get" "', argument " "1"" of type '" "faiss::LocalSearchCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchCoarseQuantizer * >(argp1);
+  result = (faiss::LocalSearchQuantizer *)& ((arg1)->lsq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LocalSearchCoarseQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::MetricType arg4 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::LocalSearchCoarseQuantizer *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_LocalSearchCoarseQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_LocalSearchCoarseQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_LocalSearchCoarseQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_LocalSearchCoarseQuantizer" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::LocalSearchCoarseQuantizer *)new faiss::LocalSearchCoarseQuantizer(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LocalSearchCoarseQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::LocalSearchCoarseQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_LocalSearchCoarseQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_LocalSearchCoarseQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_LocalSearchCoarseQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::LocalSearchCoarseQuantizer *)new faiss::LocalSearchCoarseQuantizer(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LocalSearchCoarseQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchCoarseQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::LocalSearchCoarseQuantizer *)new faiss::LocalSearchCoarseQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_LocalSearchCoarseQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_LocalSearchCoarseQuantizer", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_LocalSearchCoarseQuantizer__SWIG_2(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_LocalSearchCoarseQuantizer__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_LocalSearchCoarseQuantizer__SWIG_0(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_LocalSearchCoarseQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::LocalSearchCoarseQuantizer::LocalSearchCoarseQuantizer(int,size_t,size_t,faiss::MetricType)\n"
+    "    faiss::LocalSearchCoarseQuantizer::LocalSearchCoarseQuantizer(int,size_t,size_t)\n"
+    "    faiss::LocalSearchCoarseQuantizer::LocalSearchCoarseQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_LocalSearchCoarseQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchCoarseQuantizer *arg1 = (faiss::LocalSearchCoarseQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_LocalSearchCoarseQuantizer" "', argument " "1"" of type '" "faiss::LocalSearchCoarseQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchCoarseQuantizer * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *LocalSearchCoarseQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *LocalSearchCoarseQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IOReader_name_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  std::string *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 = SWIG_OLDOBJ ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IOReader_name_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IOReader_name_set" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  {
+    std::string *ptr = (std::string *)0;
+    res2 = SWIG_AsPtr_std_string(swig_obj[1], &ptr);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IOReader_name_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IOReader_name_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    arg2 = ptr;
+  }
+  if (arg1) (arg1)->name = *arg2;
+  resultobj = SWIG_Py_Void();
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IOReader_name_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IOReader_name_get" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  result = (std::string *) & ((arg1)->name);
+  resultobj = SWIG_From_std_string(static_cast< std::string >(*result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IOReader___call__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  void *arg2 = (void *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IOReader___call__", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IOReader___call__" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IOReader___call__" "', argument " "2"" of type '" "void *""'"); 
+  }
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IOReader___call__" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IOReader___call__" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->operator ()(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IOReader_fileno(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IOReader_fileno" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)(arg1)->fileno();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IOReader(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IOReader" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IOReader_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IOReader, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_IOWriter_name_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IOWriter *arg1 = (faiss::IOWriter *) 0 ;
+  std::string *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 = SWIG_OLDOBJ ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IOWriter_name_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IOWriter_name_set" "', argument " "1"" of type '" "faiss::IOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOWriter * >(argp1);
+  {
+    std::string *ptr = (std::string *)0;
+    res2 = SWIG_AsPtr_std_string(swig_obj[1], &ptr);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IOWriter_name_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IOWriter_name_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    arg2 = ptr;
+  }
+  if (arg1) (arg1)->name = *arg2;
+  resultobj = SWIG_Py_Void();
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IOWriter_name_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IOWriter *arg1 = (faiss::IOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IOWriter_name_get" "', argument " "1"" of type '" "faiss::IOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOWriter * >(argp1);
+  result = (std::string *) & ((arg1)->name);
+  resultobj = SWIG_From_std_string(static_cast< std::string >(*result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IOWriter___call__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IOWriter *arg1 = (faiss::IOWriter *) 0 ;
+  void *arg2 = (void *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IOWriter___call__", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IOWriter___call__" "', argument " "1"" of type '" "faiss::IOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOWriter * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IOWriter___call__" "', argument " "2"" of type '" "void const *""'"); 
+  }
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IOWriter___call__" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IOWriter___call__" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->operator ()((void const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IOWriter_fileno(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IOWriter *arg1 = (faiss::IOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IOWriter_fileno" "', argument " "1"" of type '" "faiss::IOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOWriter * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)(arg1)->fileno();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IOWriter(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IOWriter *arg1 = (faiss::IOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOWriter, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IOWriter" "', argument " "1"" of type '" "faiss::IOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOWriter * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IOWriter_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IOWriter, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_VectorIOReader_data_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorIOReader *arg1 = (faiss::VectorIOReader *) 0 ;
+  std::vector< uint8_t > *arg2 = (std::vector< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorIOReader_data_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorIOReader_data_set" "', argument " "1"" of type '" "faiss::VectorIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorIOReader * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "VectorIOReader_data_set" "', argument " "2"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< uint8_t > * >(argp2);
+  if (arg1) (arg1)->data = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorIOReader_data_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorIOReader *arg1 = (faiss::VectorIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< uint8_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorIOReader_data_get" "', argument " "1"" of type '" "faiss::VectorIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorIOReader * >(argp1);
+  result = (std::vector< uint8_t > *)& ((arg1)->data);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorIOReader_rp_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorIOReader *arg1 = (faiss::VectorIOReader *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorIOReader_rp_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorIOReader_rp_set" "', argument " "1"" of type '" "faiss::VectorIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorIOReader * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VectorIOReader_rp_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->rp = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorIOReader_rp_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorIOReader *arg1 = (faiss::VectorIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorIOReader_rp_get" "', argument " "1"" of type '" "faiss::VectorIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorIOReader * >(argp1);
+  result = (size_t) ((arg1)->rp);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorIOReader___call__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorIOReader *arg1 = (faiss::VectorIOReader *) 0 ;
+  void *arg2 = (void *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorIOReader___call__", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorIOReader___call__" "', argument " "1"" of type '" "faiss::VectorIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorIOReader * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "VectorIOReader___call__" "', argument " "2"" of type '" "void *""'"); 
+  }
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "VectorIOReader___call__" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "VectorIOReader___call__" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->operator ()(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_VectorIOReader(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorIOReader *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_VectorIOReader", 0, 0, 0)) SWIG_fail;
+  result = (faiss::VectorIOReader *)new faiss::VectorIOReader();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__VectorIOReader, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_VectorIOReader(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorIOReader *arg1 = (faiss::VectorIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorIOReader, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_VectorIOReader" "', argument " "1"" of type '" "faiss::VectorIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorIOReader * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *VectorIOReader_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__VectorIOReader, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *VectorIOReader_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_VectorIOWriter_data_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorIOWriter *arg1 = (faiss::VectorIOWriter *) 0 ;
+  std::vector< uint8_t > *arg2 = (std::vector< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorIOWriter_data_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorIOWriter_data_set" "', argument " "1"" of type '" "faiss::VectorIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorIOWriter * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "VectorIOWriter_data_set" "', argument " "2"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< uint8_t > * >(argp2);
+  if (arg1) (arg1)->data = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorIOWriter_data_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorIOWriter *arg1 = (faiss::VectorIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< uint8_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorIOWriter_data_get" "', argument " "1"" of type '" "faiss::VectorIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorIOWriter * >(argp1);
+  result = (std::vector< uint8_t > *)& ((arg1)->data);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VectorIOWriter___call__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorIOWriter *arg1 = (faiss::VectorIOWriter *) 0 ;
+  void *arg2 = (void *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VectorIOWriter___call__", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VectorIOWriter___call__" "', argument " "1"" of type '" "faiss::VectorIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorIOWriter * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "VectorIOWriter___call__" "', argument " "2"" of type '" "void const *""'"); 
+  }
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "VectorIOWriter___call__" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "VectorIOWriter___call__" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->operator ()((void const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_VectorIOWriter(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorIOWriter *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_VectorIOWriter", 0, 0, 0)) SWIG_fail;
+  result = (faiss::VectorIOWriter *)new faiss::VectorIOWriter();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__VectorIOWriter, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_VectorIOWriter(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorIOWriter *arg1 = (faiss::VectorIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorIOWriter, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_VectorIOWriter" "', argument " "1"" of type '" "faiss::VectorIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorIOWriter * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *VectorIOWriter_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__VectorIOWriter, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *VectorIOWriter_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_FileIOReader_f_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOReader *arg1 = (faiss::FileIOReader *) 0 ;
+  FILE *arg2 = (FILE *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "FileIOReader_f_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FileIOReader_f_set" "', argument " "1"" of type '" "faiss::FileIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOReader * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_FILE, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "FileIOReader_f_set" "', argument " "2"" of type '" "FILE *""'"); 
+  }
+  arg2 = reinterpret_cast< FILE * >(argp2);
+  if (arg1) (arg1)->f = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FileIOReader_f_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOReader *arg1 = (faiss::FileIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  FILE *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FileIOReader_f_get" "', argument " "1"" of type '" "faiss::FileIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOReader * >(argp1);
+  result = (FILE *) ((arg1)->f);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_FILE, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FileIOReader_need_close_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOReader *arg1 = (faiss::FileIOReader *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "FileIOReader_need_close_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FileIOReader_need_close_set" "', argument " "1"" of type '" "faiss::FileIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOReader * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "FileIOReader_need_close_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->need_close = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FileIOReader_need_close_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOReader *arg1 = (faiss::FileIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FileIOReader_need_close_get" "', argument " "1"" of type '" "faiss::FileIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOReader * >(argp1);
+  result = (bool) ((arg1)->need_close);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_FileIOReader__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  FILE *arg1 = (FILE *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::FileIOReader *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_FILE, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_FileIOReader" "', argument " "1"" of type '" "FILE *""'"); 
+  }
+  arg1 = reinterpret_cast< FILE * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::FileIOReader *)new faiss::FileIOReader(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__FileIOReader, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_FileIOReader__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  char *arg1 = (char *) 0 ;
+  int res1 ;
+  char *buf1 = 0 ;
+  int alloc1 = 0 ;
+  faiss::FileIOReader *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_AsCharPtrAndSize(swig_obj[0], &buf1, NULL, &alloc1);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_FileIOReader" "', argument " "1"" of type '" "char const *""'");
+  }
+  arg1 = reinterpret_cast< char * >(buf1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::FileIOReader *)new faiss::FileIOReader((char const *)arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__FileIOReader, SWIG_POINTER_NEW |  0 );
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return resultobj;
+fail:
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_FileIOReader(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_FileIOReader", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_FILE, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_FileIOReader__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    int res = SWIG_AsCharPtrAndSize(argv[0], 0, NULL, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_FileIOReader__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_FileIOReader'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::FileIOReader::FileIOReader(FILE *)\n"
+    "    faiss::FileIOReader::FileIOReader(char const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_FileIOReader(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOReader *arg1 = (faiss::FileIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOReader, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_FileIOReader" "', argument " "1"" of type '" "faiss::FileIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOReader * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FileIOReader___call__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOReader *arg1 = (faiss::FileIOReader *) 0 ;
+  void *arg2 = (void *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "FileIOReader___call__", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FileIOReader___call__" "', argument " "1"" of type '" "faiss::FileIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOReader * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "FileIOReader___call__" "', argument " "2"" of type '" "void *""'"); 
+  }
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "FileIOReader___call__" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "FileIOReader___call__" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->operator ()(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FileIOReader_fileno(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOReader *arg1 = (faiss::FileIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FileIOReader_fileno" "', argument " "1"" of type '" "faiss::FileIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOReader * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)(arg1)->fileno();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *FileIOReader_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__FileIOReader, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *FileIOReader_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_FileIOWriter_f_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOWriter *arg1 = (faiss::FileIOWriter *) 0 ;
+  FILE *arg2 = (FILE *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "FileIOWriter_f_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FileIOWriter_f_set" "', argument " "1"" of type '" "faiss::FileIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOWriter * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_FILE, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "FileIOWriter_f_set" "', argument " "2"" of type '" "FILE *""'"); 
+  }
+  arg2 = reinterpret_cast< FILE * >(argp2);
+  if (arg1) (arg1)->f = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FileIOWriter_f_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOWriter *arg1 = (faiss::FileIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  FILE *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FileIOWriter_f_get" "', argument " "1"" of type '" "faiss::FileIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOWriter * >(argp1);
+  result = (FILE *) ((arg1)->f);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_FILE, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FileIOWriter_need_close_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOWriter *arg1 = (faiss::FileIOWriter *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "FileIOWriter_need_close_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FileIOWriter_need_close_set" "', argument " "1"" of type '" "faiss::FileIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOWriter * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "FileIOWriter_need_close_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->need_close = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FileIOWriter_need_close_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOWriter *arg1 = (faiss::FileIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FileIOWriter_need_close_get" "', argument " "1"" of type '" "faiss::FileIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOWriter * >(argp1);
+  result = (bool) ((arg1)->need_close);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_FileIOWriter__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  FILE *arg1 = (FILE *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::FileIOWriter *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_FILE, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_FileIOWriter" "', argument " "1"" of type '" "FILE *""'"); 
+  }
+  arg1 = reinterpret_cast< FILE * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::FileIOWriter *)new faiss::FileIOWriter(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__FileIOWriter, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_FileIOWriter__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  char *arg1 = (char *) 0 ;
+  int res1 ;
+  char *buf1 = 0 ;
+  int alloc1 = 0 ;
+  faiss::FileIOWriter *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_AsCharPtrAndSize(swig_obj[0], &buf1, NULL, &alloc1);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_FileIOWriter" "', argument " "1"" of type '" "char const *""'");
+  }
+  arg1 = reinterpret_cast< char * >(buf1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::FileIOWriter *)new faiss::FileIOWriter((char const *)arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__FileIOWriter, SWIG_POINTER_NEW |  0 );
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return resultobj;
+fail:
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_FileIOWriter(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_FileIOWriter", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_FILE, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_FileIOWriter__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    int res = SWIG_AsCharPtrAndSize(argv[0], 0, NULL, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_FileIOWriter__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_FileIOWriter'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::FileIOWriter::FileIOWriter(FILE *)\n"
+    "    faiss::FileIOWriter::FileIOWriter(char const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_FileIOWriter(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOWriter *arg1 = (faiss::FileIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOWriter, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_FileIOWriter" "', argument " "1"" of type '" "faiss::FileIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOWriter * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FileIOWriter___call__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOWriter *arg1 = (faiss::FileIOWriter *) 0 ;
+  void *arg2 = (void *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "FileIOWriter___call__", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FileIOWriter___call__" "', argument " "1"" of type '" "faiss::FileIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOWriter * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "FileIOWriter___call__" "', argument " "2"" of type '" "void const *""'"); 
+  }
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "FileIOWriter___call__" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "FileIOWriter___call__" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->operator ()((void const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FileIOWriter_fileno(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FileIOWriter *arg1 = (faiss::FileIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FileIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FileIOWriter_fileno" "', argument " "1"" of type '" "faiss::FileIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FileIOWriter * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)(arg1)->fileno();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *FileIOWriter_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__FileIOWriter, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *FileIOWriter_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_reader_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  faiss::IOReader *arg2 = (faiss::IOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOReader_reader_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_reader_set" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IOReader, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "BufferedIOReader_reader_set" "', argument " "2"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IOReader * >(argp2);
+  if (arg1) (arg1)->reader = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_reader_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IOReader *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_reader_get" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  result = (faiss::IOReader *) ((arg1)->reader);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_bsz_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOReader_bsz_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_bsz_set" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BufferedIOReader_bsz_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->bsz = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_bsz_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_bsz_get" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  result = (size_t) ((arg1)->bsz);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_ofs_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOReader_ofs_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_ofs_set" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BufferedIOReader_ofs_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->ofs = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_ofs_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_ofs_get" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  result = (size_t) ((arg1)->ofs);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_ofs2_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOReader_ofs2_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_ofs2_set" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BufferedIOReader_ofs2_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->ofs2 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_ofs2_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_ofs2_get" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  result = (size_t) ((arg1)->ofs2);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_b0_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOReader_b0_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_b0_set" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BufferedIOReader_b0_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->b0 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_b0_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_b0_get" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  result = (size_t) ((arg1)->b0);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_b1_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOReader_b1_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_b1_set" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BufferedIOReader_b1_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->b1 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_b1_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_b1_get" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  result = (size_t) ((arg1)->b1);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_buffer_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  std::vector< char > *arg2 = (std::vector< char > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOReader_buffer_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_buffer_set" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "BufferedIOReader_buffer_set" "', argument " "2"" of type '" "std::vector< char > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< char > * >(argp2);
+  if (arg1) (arg1)->buffer = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader_buffer_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< char > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader_buffer_get" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  result = (std::vector< char > *)& ((arg1)->buffer);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_char_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_BufferedIOReader__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  faiss::BufferedIOReader *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_BufferedIOReader" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_BufferedIOReader" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::BufferedIOReader *)new faiss::BufferedIOReader(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__BufferedIOReader, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_BufferedIOReader__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::BufferedIOReader *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_BufferedIOReader" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::BufferedIOReader *)new faiss::BufferedIOReader(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__BufferedIOReader, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_BufferedIOReader(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_BufferedIOReader", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IOReader, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_BufferedIOReader__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IOReader, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_BufferedIOReader__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_BufferedIOReader'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::BufferedIOReader::BufferedIOReader(faiss::IOReader *,size_t)\n"
+    "    faiss::BufferedIOReader::BufferedIOReader(faiss::IOReader *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOReader___call__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  void *arg2 = (void *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOReader___call__", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOReader___call__" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "BufferedIOReader___call__" "', argument " "2"" of type '" "void *""'"); 
+  }
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "BufferedIOReader___call__" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "BufferedIOReader___call__" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->operator ()(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_BufferedIOReader(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOReader *arg1 = (faiss::BufferedIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOReader, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_BufferedIOReader" "', argument " "1"" of type '" "faiss::BufferedIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOReader * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *BufferedIOReader_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__BufferedIOReader, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *BufferedIOReader_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_BufferedIOWriter_writer_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  faiss::IOWriter *arg2 = (faiss::IOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOWriter_writer_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOWriter_writer_set" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IOWriter, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "BufferedIOWriter_writer_set" "', argument " "2"" of type '" "faiss::IOWriter *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IOWriter * >(argp2);
+  if (arg1) (arg1)->writer = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOWriter_writer_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IOWriter *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOWriter_writer_get" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  result = (faiss::IOWriter *) ((arg1)->writer);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IOWriter, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOWriter_bsz_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOWriter_bsz_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOWriter_bsz_set" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BufferedIOWriter_bsz_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->bsz = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOWriter_bsz_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOWriter_bsz_get" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  result = (size_t) ((arg1)->bsz);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOWriter_ofs_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOWriter_ofs_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOWriter_ofs_set" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BufferedIOWriter_ofs_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->ofs = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOWriter_ofs_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOWriter_ofs_get" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  result = (size_t) ((arg1)->ofs);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOWriter_ofs2_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOWriter_ofs2_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOWriter_ofs2_set" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BufferedIOWriter_ofs2_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->ofs2 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOWriter_ofs2_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOWriter_ofs2_get" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  result = (size_t) ((arg1)->ofs2);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOWriter_b0_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOWriter_b0_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOWriter_b0_set" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BufferedIOWriter_b0_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->b0 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOWriter_b0_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOWriter_b0_get" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  result = (size_t) ((arg1)->b0);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOWriter_buffer_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  std::vector< char > *arg2 = (std::vector< char > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOWriter_buffer_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOWriter_buffer_set" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "BufferedIOWriter_buffer_set" "', argument " "2"" of type '" "std::vector< char > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< char > * >(argp2);
+  if (arg1) (arg1)->buffer = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOWriter_buffer_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< char > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOWriter_buffer_get" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  result = (std::vector< char > *)& ((arg1)->buffer);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_char_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_BufferedIOWriter__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IOWriter *arg1 = (faiss::IOWriter *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  faiss::BufferedIOWriter *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_BufferedIOWriter" "', argument " "1"" of type '" "faiss::IOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOWriter * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_BufferedIOWriter" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::BufferedIOWriter *)new faiss::BufferedIOWriter(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__BufferedIOWriter, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_BufferedIOWriter__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IOWriter *arg1 = (faiss::IOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::BufferedIOWriter *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_BufferedIOWriter" "', argument " "1"" of type '" "faiss::IOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOWriter * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::BufferedIOWriter *)new faiss::BufferedIOWriter(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__BufferedIOWriter, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_BufferedIOWriter(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_BufferedIOWriter", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IOWriter, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_BufferedIOWriter__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IOWriter, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_BufferedIOWriter__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_BufferedIOWriter'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::BufferedIOWriter::BufferedIOWriter(faiss::IOWriter *,size_t)\n"
+    "    faiss::BufferedIOWriter::BufferedIOWriter(faiss::IOWriter *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferedIOWriter___call__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  void *arg2 = (void *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferedIOWriter___call__", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferedIOWriter___call__" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "BufferedIOWriter___call__" "', argument " "2"" of type '" "void const *""'"); 
+  }
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "BufferedIOWriter___call__" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "BufferedIOWriter___call__" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->operator ()((void const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_BufferedIOWriter(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferedIOWriter *arg1 = (faiss::BufferedIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferedIOWriter, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_BufferedIOWriter" "', argument " "1"" of type '" "faiss::BufferedIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferedIOWriter * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *BufferedIOWriter_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__BufferedIOWriter, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *BufferedIOWriter_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_fourcc__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  char *arg1 ;
+  char temp1[4] ;
+  int res1 ;
+  uint32_t result;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_AsCharArray(swig_obj[0], temp1, 4);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fourcc" "', argument " "1"" of type '" "char const [4]""'");
+  }
+  arg1 = reinterpret_cast< char * >(temp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint32_t)faiss::fourcc((char const (*))arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_int(static_cast< unsigned int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fourcc__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::string *arg1 = 0 ;
+  int res1 = SWIG_OLDOBJ ;
+  uint32_t result;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  {
+    std::string *ptr = (std::string *)0;
+    res1 = SWIG_AsPtr_std_string(swig_obj[0], &ptr);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "fourcc" "', argument " "1"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "fourcc" "', argument " "1"" of type '" "std::string const &""'"); 
+    }
+    arg1 = ptr;
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint32_t)faiss::fourcc((std::string const &)*arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_int(static_cast< unsigned int >(result));
+  if (SWIG_IsNewObj(res1)) delete arg1;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res1)) delete arg1;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fourcc(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "fourcc", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    int res = SWIG_AsPtr_std_string(argv[0], (std::string**)(0));
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_fourcc__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    int res = SWIG_AsCharArray(argv[0], (char *)0, 4);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_fourcc__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'fourcc'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::fourcc(char const [4])\n"
+    "    faiss::fourcc(std::string const &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_fourcc_inv__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  uint32_t arg1 ;
+  char *arg2 ;
+  unsigned int val1 ;
+  int ecode1 = 0 ;
+  char temp2[5] ;
+  int res2 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_unsigned_SS_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fourcc_inv" "', argument " "1"" of type '" "uint32_t""'");
+  } 
+  arg1 = static_cast< uint32_t >(val1);
+  res2 = SWIG_AsCharArray(swig_obj[1], temp2, 5);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "fourcc_inv" "', argument " "2"" of type '" "char [5]""'");
+  }
+  arg2 = reinterpret_cast< char * >(temp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::fourcc_inv(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fourcc_inv__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  uint32_t arg1 ;
+  unsigned int val1 ;
+  int ecode1 = 0 ;
+  std::string result;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_unsigned_SS_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fourcc_inv" "', argument " "1"" of type '" "uint32_t""'");
+  } 
+  arg1 = static_cast< uint32_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = faiss::fourcc_inv(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_std_string(static_cast< std::string >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_fourcc_inv(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "fourcc_inv", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_unsigned_SS_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_fourcc_inv__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_unsigned_SS_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      int res = SWIG_AsCharArray(argv[1], (char *)0, 5);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_fourcc_inv__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'fourcc_inv'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::fourcc_inv(uint32_t,char [5])\n"
+    "    faiss::fourcc_inv(uint32_t)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_fourcc_inv_printable(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint32_t arg1 ;
+  unsigned int val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_unsigned_SS_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "fourcc_inv_printable" "', argument " "1"" of type '" "uint32_t""'");
+  } 
+  arg1 = static_cast< uint32_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = faiss::fourcc_inv_printable(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_std_string(static_cast< std::string >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_nlist_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_nlist_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_nlist_set" "', argument " "1"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_nlist_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nlist = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_nlist_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_nlist_get" "', argument " "1"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  result = (size_t) ((arg1)->nlist);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_code_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_code_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_code_size_set" "', argument " "1"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_code_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->code_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_code_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_code_size_get" "', argument " "1"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  result = (size_t) ((arg1)->code_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_list_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_list_size", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_list_size" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_list_size" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::InvertedLists const *)arg1)->list_size(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_get_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_get_codes", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_get_codes" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_get_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::InvertedLists const *)arg1)->get_codes(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_get_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedLists::idx_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_get_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_get_ids" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_get_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t *)((faiss::InvertedLists const *)arg1)->get_ids(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_release_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_release_codes", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_release_codes" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_release_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "InvertedLists_release_codes" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::InvertedLists const *)arg1)->release_codes(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_release_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  faiss::InvertedLists::idx_t *arg3 = (faiss::InvertedLists::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_release_ids", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_release_ids" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_release_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "InvertedLists_release_ids" "', argument " "3"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::InvertedLists const *)arg1)->release_ids(arg2,(faiss::InvertedLists::idx_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_get_single_id(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::InvertedLists::idx_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_get_single_id", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_get_single_id" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_get_single_id" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "InvertedLists_get_single_id" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t)((faiss::InvertedLists const *)arg1)->get_single_id(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_get_single_code(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_get_single_code", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_get_single_code" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_get_single_code" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "InvertedLists_get_single_code" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::InvertedLists const *)arg1)->get_single_code(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_prefetch_lists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  faiss::InvertedLists::idx_t *arg2 = (faiss::InvertedLists::idx_t *) 0 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_prefetch_lists", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_prefetch_lists" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "InvertedLists_prefetch_lists" "', argument " "2"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "InvertedLists_prefetch_lists" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::InvertedLists const *)arg1)->prefetch_lists((faiss::InvertedLists::idx_t const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_add_entry(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  faiss::InvertedLists::idx_t arg3 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_add_entry", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_add_entry" "', argument " "1"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_add_entry" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "InvertedLists_add_entry" "', argument " "3"" of type '" "faiss::InvertedLists::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::InvertedLists::idx_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "InvertedLists_add_entry" "', argument " "4"" of type '" "uint8_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->add_entry(arg2,arg3,(uint8_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_add_entries(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::InvertedLists::idx_t *arg4 = (faiss::InvertedLists::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_add_entries", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_add_entries" "', argument " "1"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_add_entries" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "InvertedLists_add_entries" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "InvertedLists_add_entries" "', argument " "4"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "InvertedLists_add_entries" "', argument " "5"" of type '" "uint8_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->add_entries(arg2,arg3,(faiss::InvertedLists::idx_t const *)arg4,(uint8_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_update_entry(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::InvertedLists::idx_t arg4 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_update_entry", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_update_entry" "', argument " "1"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_update_entry" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "InvertedLists_update_entry" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "InvertedLists_update_entry" "', argument " "4"" of type '" "faiss::InvertedLists::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::InvertedLists::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "InvertedLists_update_entry" "', argument " "5"" of type '" "uint8_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->update_entry(arg2,arg3,arg4,(uint8_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_update_entries(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  faiss::InvertedLists::idx_t *arg5 = (faiss::InvertedLists::idx_t *) 0 ;
+  uint8_t *arg6 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_update_entries", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_update_entries" "', argument " "1"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_update_entries" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "InvertedLists_update_entries" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "InvertedLists_update_entries" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "InvertedLists_update_entries" "', argument " "5"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "InvertedLists_update_entries" "', argument " "6"" of type '" "uint8_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< uint8_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->update_entries(arg2,arg3,arg4,(faiss::InvertedLists::idx_t const *)arg5,(uint8_t const *)arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_resize", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_resize" "', argument " "1"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "InvertedLists_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "InvertedLists_resize" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_reset" "', argument " "1"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_merge_from(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedLists_merge_from", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_merge_from" "', argument " "1"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "InvertedLists_merge_from" "', argument " "2"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "InvertedLists_merge_from" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->merge_from(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_InvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_InvertedLists" "', argument " "1"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_imbalance_factor(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_imbalance_factor" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)((faiss::InvertedLists const *)arg1)->imbalance_factor();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_print_stats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_print_stats" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::InvertedLists const *)arg1)->print_stats();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedLists_compute_ntotal(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedLists_compute_ntotal" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::InvertedLists const *)arg1)->compute_ntotal();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *InvertedLists_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__InvertedLists, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_ArrayInvertedLists_codes_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ArrayInvertedLists *arg1 = (faiss::ArrayInvertedLists *) 0 ;
+  std::vector< std::vector< uint8_t > > *arg2 = (std::vector< std::vector< uint8_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ArrayInvertedLists_codes_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ArrayInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ArrayInvertedLists_codes_set" "', argument " "1"" of type '" "faiss::ArrayInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ArrayInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ArrayInvertedLists_codes_set" "', argument " "2"" of type '" "std::vector< std::vector< uint8_t > > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< std::vector< uint8_t > > * >(argp2);
+  if (arg1) (arg1)->codes = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ArrayInvertedLists_codes_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ArrayInvertedLists *arg1 = (faiss::ArrayInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< std::vector< uint8_t > > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ArrayInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ArrayInvertedLists_codes_get" "', argument " "1"" of type '" "faiss::ArrayInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ArrayInvertedLists * >(argp1);
+  result = (std::vector< std::vector< uint8_t > > *)& ((arg1)->codes);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_std__vectorT_uint8_t_t_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ArrayInvertedLists_ids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ArrayInvertedLists *arg1 = (faiss::ArrayInvertedLists *) 0 ;
+  std::vector< std::vector< faiss::InvertedLists::idx_t > > *arg2 = (std::vector< std::vector< faiss::InvertedLists::idx_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ArrayInvertedLists_ids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ArrayInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ArrayInvertedLists_ids_set" "', argument " "1"" of type '" "faiss::ArrayInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ArrayInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ArrayInvertedLists_ids_set" "', argument " "2"" of type '" "std::vector< std::vector< faiss::InvertedLists::idx_t > > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< std::vector< faiss::InvertedLists::idx_t > > * >(argp2);
+  if (arg1) (arg1)->ids = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ArrayInvertedLists_ids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ArrayInvertedLists *arg1 = (faiss::ArrayInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< std::vector< faiss::InvertedLists::idx_t > > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ArrayInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ArrayInvertedLists_ids_get" "', argument " "1"" of type '" "faiss::ArrayInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ArrayInvertedLists * >(argp1);
+  result = (std::vector< std::vector< faiss::InvertedLists::idx_t > > *)& ((arg1)->ids);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ArrayInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::ArrayInvertedLists *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ArrayInvertedLists", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ArrayInvertedLists" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ArrayInvertedLists" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ArrayInvertedLists *)new faiss::ArrayInvertedLists(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ArrayInvertedLists, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ArrayInvertedLists_list_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ArrayInvertedLists *arg1 = (faiss::ArrayInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ArrayInvertedLists_list_size", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ArrayInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ArrayInvertedLists_list_size" "', argument " "1"" of type '" "faiss::ArrayInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ArrayInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ArrayInvertedLists_list_size" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::ArrayInvertedLists const *)arg1)->list_size(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ArrayInvertedLists_get_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ArrayInvertedLists *arg1 = (faiss::ArrayInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ArrayInvertedLists_get_codes", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ArrayInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ArrayInvertedLists_get_codes" "', argument " "1"" of type '" "faiss::ArrayInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ArrayInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ArrayInvertedLists_get_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::ArrayInvertedLists const *)arg1)->get_codes(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ArrayInvertedLists_get_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ArrayInvertedLists *arg1 = (faiss::ArrayInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedLists::idx_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ArrayInvertedLists_get_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ArrayInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ArrayInvertedLists_get_ids" "', argument " "1"" of type '" "faiss::ArrayInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ArrayInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ArrayInvertedLists_get_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t *)((faiss::ArrayInvertedLists const *)arg1)->get_ids(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ArrayInvertedLists_add_entries(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ArrayInvertedLists *arg1 = (faiss::ArrayInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::InvertedLists::idx_t *arg4 = (faiss::InvertedLists::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ArrayInvertedLists_add_entries", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ArrayInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ArrayInvertedLists_add_entries" "', argument " "1"" of type '" "faiss::ArrayInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ArrayInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ArrayInvertedLists_add_entries" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ArrayInvertedLists_add_entries" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ArrayInvertedLists_add_entries" "', argument " "4"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "ArrayInvertedLists_add_entries" "', argument " "5"" of type '" "uint8_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->add_entries(arg2,arg3,(faiss::InvertedLists::idx_t const *)arg4,(uint8_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ArrayInvertedLists_update_entries(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ArrayInvertedLists *arg1 = (faiss::ArrayInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  faiss::InvertedLists::idx_t *arg5 = (faiss::InvertedLists::idx_t *) 0 ;
+  uint8_t *arg6 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ArrayInvertedLists_update_entries", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ArrayInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ArrayInvertedLists_update_entries" "', argument " "1"" of type '" "faiss::ArrayInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ArrayInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ArrayInvertedLists_update_entries" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ArrayInvertedLists_update_entries" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ArrayInvertedLists_update_entries" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "ArrayInvertedLists_update_entries" "', argument " "5"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ArrayInvertedLists_update_entries" "', argument " "6"" of type '" "uint8_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< uint8_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->update_entries(arg2,arg3,arg4,(faiss::InvertedLists::idx_t const *)arg5,(uint8_t const *)arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ArrayInvertedLists_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ArrayInvertedLists *arg1 = (faiss::ArrayInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ArrayInvertedLists_resize", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ArrayInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ArrayInvertedLists_resize" "', argument " "1"" of type '" "faiss::ArrayInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ArrayInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ArrayInvertedLists_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ArrayInvertedLists_resize" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ArrayInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ArrayInvertedLists *arg1 = (faiss::ArrayInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ArrayInvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ArrayInvertedLists" "', argument " "1"" of type '" "faiss::ArrayInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ArrayInvertedLists * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ArrayInvertedLists_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ArrayInvertedLists, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ArrayInvertedLists_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ReadOnlyInvertedLists_add_entries(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReadOnlyInvertedLists *arg1 = (faiss::ReadOnlyInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::InvertedLists::idx_t *arg4 = (faiss::InvertedLists::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReadOnlyInvertedLists_add_entries", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReadOnlyInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReadOnlyInvertedLists_add_entries" "', argument " "1"" of type '" "faiss::ReadOnlyInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReadOnlyInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReadOnlyInvertedLists_add_entries" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ReadOnlyInvertedLists_add_entries" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ReadOnlyInvertedLists_add_entries" "', argument " "4"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "ReadOnlyInvertedLists_add_entries" "', argument " "5"" of type '" "uint8_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->add_entries(arg2,arg3,(faiss::InvertedLists::idx_t const *)arg4,(uint8_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReadOnlyInvertedLists_update_entries(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReadOnlyInvertedLists *arg1 = (faiss::ReadOnlyInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  faiss::InvertedLists::idx_t *arg5 = (faiss::InvertedLists::idx_t *) 0 ;
+  uint8_t *arg6 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReadOnlyInvertedLists_update_entries", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReadOnlyInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReadOnlyInvertedLists_update_entries" "', argument " "1"" of type '" "faiss::ReadOnlyInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReadOnlyInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReadOnlyInvertedLists_update_entries" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ReadOnlyInvertedLists_update_entries" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ReadOnlyInvertedLists_update_entries" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "ReadOnlyInvertedLists_update_entries" "', argument " "5"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ReadOnlyInvertedLists_update_entries" "', argument " "6"" of type '" "uint8_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< uint8_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->update_entries(arg2,arg3,arg4,(faiss::InvertedLists::idx_t const *)arg5,(uint8_t const *)arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReadOnlyInvertedLists_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReadOnlyInvertedLists *arg1 = (faiss::ReadOnlyInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReadOnlyInvertedLists_resize", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReadOnlyInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReadOnlyInvertedLists_resize" "', argument " "1"" of type '" "faiss::ReadOnlyInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReadOnlyInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReadOnlyInvertedLists_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ReadOnlyInvertedLists_resize" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ReadOnlyInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReadOnlyInvertedLists *arg1 = (faiss::ReadOnlyInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReadOnlyInvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ReadOnlyInvertedLists" "', argument " "1"" of type '" "faiss::ReadOnlyInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReadOnlyInvertedLists * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ReadOnlyInvertedLists_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ReadOnlyInvertedLists, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_HStackInvertedLists_ils_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HStackInvertedLists *arg1 = (faiss::HStackInvertedLists *) 0 ;
+  std::vector< faiss::InvertedLists const * > *arg2 = (std::vector< faiss::InvertedLists const * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HStackInvertedLists_ils_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HStackInvertedLists_ils_set" "', argument " "1"" of type '" "faiss::HStackInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HStackInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__InvertedLists_const_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HStackInvertedLists_ils_set" "', argument " "2"" of type '" "std::vector< faiss::InvertedLists const * > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::InvertedLists const * > * >(argp2);
+  if (arg1) (arg1)->ils = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HStackInvertedLists_ils_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HStackInvertedLists *arg1 = (faiss::HStackInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::InvertedLists const * > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HStackInvertedLists_ils_get" "', argument " "1"" of type '" "faiss::HStackInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HStackInvertedLists * >(argp1);
+  result = (std::vector< faiss::InvertedLists const * > *)& ((arg1)->ils);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__InvertedLists_const_p_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_HStackInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  faiss::InvertedLists **arg2 = (faiss::InvertedLists **) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::HStackInvertedLists *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_HStackInvertedLists", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_HStackInvertedLists" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_HStackInvertedLists" "', argument " "2"" of type '" "faiss::InvertedLists const **""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists ** >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::HStackInvertedLists *)new faiss::HStackInvertedLists(arg1,(faiss::InvertedLists const **)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HStackInvertedLists, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HStackInvertedLists_list_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HStackInvertedLists *arg1 = (faiss::HStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HStackInvertedLists_list_size", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HStackInvertedLists_list_size" "', argument " "1"" of type '" "faiss::HStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HStackInvertedLists_list_size" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::HStackInvertedLists const *)arg1)->list_size(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HStackInvertedLists_get_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HStackInvertedLists *arg1 = (faiss::HStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HStackInvertedLists_get_codes", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HStackInvertedLists_get_codes" "', argument " "1"" of type '" "faiss::HStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HStackInvertedLists_get_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::HStackInvertedLists const *)arg1)->get_codes(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HStackInvertedLists_get_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HStackInvertedLists *arg1 = (faiss::HStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedLists::idx_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HStackInvertedLists_get_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HStackInvertedLists_get_ids" "', argument " "1"" of type '" "faiss::HStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HStackInvertedLists_get_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t *)((faiss::HStackInvertedLists const *)arg1)->get_ids(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HStackInvertedLists_prefetch_lists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HStackInvertedLists *arg1 = (faiss::HStackInvertedLists *) 0 ;
+  faiss::InvertedLists::idx_t *arg2 = (faiss::InvertedLists::idx_t *) 0 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HStackInvertedLists_prefetch_lists", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HStackInvertedLists_prefetch_lists" "', argument " "1"" of type '" "faiss::HStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HStackInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HStackInvertedLists_prefetch_lists" "', argument " "2"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "HStackInvertedLists_prefetch_lists" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::HStackInvertedLists const *)arg1)->prefetch_lists((faiss::InvertedLists::idx_t const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HStackInvertedLists_release_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HStackInvertedLists *arg1 = (faiss::HStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HStackInvertedLists_release_codes", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HStackInvertedLists_release_codes" "', argument " "1"" of type '" "faiss::HStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HStackInvertedLists_release_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "HStackInvertedLists_release_codes" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::HStackInvertedLists const *)arg1)->release_codes(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HStackInvertedLists_release_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HStackInvertedLists *arg1 = (faiss::HStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  faiss::InvertedLists::idx_t *arg3 = (faiss::InvertedLists::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HStackInvertedLists_release_ids", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HStackInvertedLists_release_ids" "', argument " "1"" of type '" "faiss::HStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HStackInvertedLists_release_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "HStackInvertedLists_release_ids" "', argument " "3"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::HStackInvertedLists const *)arg1)->release_ids(arg2,(faiss::InvertedLists::idx_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HStackInvertedLists_get_single_id(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HStackInvertedLists *arg1 = (faiss::HStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::InvertedLists::idx_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HStackInvertedLists_get_single_id", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HStackInvertedLists_get_single_id" "', argument " "1"" of type '" "faiss::HStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HStackInvertedLists_get_single_id" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "HStackInvertedLists_get_single_id" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t)((faiss::HStackInvertedLists const *)arg1)->get_single_id(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HStackInvertedLists_get_single_code(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HStackInvertedLists *arg1 = (faiss::HStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HStackInvertedLists_get_single_code", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HStackInvertedLists_get_single_code" "', argument " "1"" of type '" "faiss::HStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HStackInvertedLists_get_single_code" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "HStackInvertedLists_get_single_code" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::HStackInvertedLists const *)arg1)->get_single_code(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_HStackInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HStackInvertedLists *arg1 = (faiss::HStackInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HStackInvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_HStackInvertedLists" "', argument " "1"" of type '" "faiss::HStackInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HStackInvertedLists * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *HStackInvertedLists_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__HStackInvertedLists, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *HStackInvertedLists_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_il_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SliceInvertedLists_il_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_il_set" "', argument " "1"" of type '" "faiss::SliceInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SliceInvertedLists_il_set" "', argument " "2"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  if (arg1) (arg1)->il = (faiss::InvertedLists const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_il_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::InvertedLists *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_il_get" "', argument " "1"" of type '" "faiss::SliceInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  result = (faiss::InvertedLists *) ((arg1)->il);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_i0_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  faiss::InvertedLists::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SliceInvertedLists_i0_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_i0_set" "', argument " "1"" of type '" "faiss::SliceInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SliceInvertedLists_i0_set" "', argument " "2"" of type '" "faiss::InvertedLists::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::InvertedLists::idx_t >(val2);
+  if (arg1) (arg1)->i0 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_i0_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::InvertedLists::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_i0_get" "', argument " "1"" of type '" "faiss::SliceInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  result = (faiss::InvertedLists::idx_t) ((arg1)->i0);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_i1_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  faiss::InvertedLists::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SliceInvertedLists_i1_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_i1_set" "', argument " "1"" of type '" "faiss::SliceInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SliceInvertedLists_i1_set" "', argument " "2"" of type '" "faiss::InvertedLists::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::InvertedLists::idx_t >(val2);
+  if (arg1) (arg1)->i1 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_i1_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::InvertedLists::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_i1_get" "', argument " "1"" of type '" "faiss::SliceInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  result = (faiss::InvertedLists::idx_t) ((arg1)->i1);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_SliceInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  faiss::InvertedLists::idx_t arg2 ;
+  faiss::InvertedLists::idx_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::SliceInvertedLists *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_SliceInvertedLists", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_SliceInvertedLists" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_SliceInvertedLists" "', argument " "2"" of type '" "faiss::InvertedLists::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::InvertedLists::idx_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_SliceInvertedLists" "', argument " "3"" of type '" "faiss::InvertedLists::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::InvertedLists::idx_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::SliceInvertedLists *)new faiss::SliceInvertedLists((faiss::InvertedLists const *)arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__SliceInvertedLists, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_list_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SliceInvertedLists_list_size", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_list_size" "', argument " "1"" of type '" "faiss::SliceInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SliceInvertedLists_list_size" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::SliceInvertedLists const *)arg1)->list_size(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_get_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SliceInvertedLists_get_codes", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_get_codes" "', argument " "1"" of type '" "faiss::SliceInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SliceInvertedLists_get_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::SliceInvertedLists const *)arg1)->get_codes(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_get_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedLists::idx_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SliceInvertedLists_get_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_get_ids" "', argument " "1"" of type '" "faiss::SliceInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SliceInvertedLists_get_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t *)((faiss::SliceInvertedLists const *)arg1)->get_ids(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_release_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  size_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SliceInvertedLists_release_codes", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_release_codes" "', argument " "1"" of type '" "faiss::SliceInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SliceInvertedLists_release_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "SliceInvertedLists_release_codes" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::SliceInvertedLists const *)arg1)->release_codes(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_release_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  size_t arg2 ;
+  faiss::InvertedLists::idx_t *arg3 = (faiss::InvertedLists::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SliceInvertedLists_release_ids", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_release_ids" "', argument " "1"" of type '" "faiss::SliceInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SliceInvertedLists_release_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "SliceInvertedLists_release_ids" "', argument " "3"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::SliceInvertedLists const *)arg1)->release_ids(arg2,(faiss::InvertedLists::idx_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_get_single_id(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::InvertedLists::idx_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SliceInvertedLists_get_single_id", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_get_single_id" "', argument " "1"" of type '" "faiss::SliceInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SliceInvertedLists_get_single_id" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "SliceInvertedLists_get_single_id" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t)((faiss::SliceInvertedLists const *)arg1)->get_single_id(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_get_single_code(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SliceInvertedLists_get_single_code", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_get_single_code" "', argument " "1"" of type '" "faiss::SliceInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SliceInvertedLists_get_single_code" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "SliceInvertedLists_get_single_code" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::SliceInvertedLists const *)arg1)->get_single_code(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SliceInvertedLists_prefetch_lists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  faiss::InvertedLists::idx_t *arg2 = (faiss::InvertedLists::idx_t *) 0 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SliceInvertedLists_prefetch_lists", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SliceInvertedLists_prefetch_lists" "', argument " "1"" of type '" "faiss::SliceInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SliceInvertedLists_prefetch_lists" "', argument " "2"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "SliceInvertedLists_prefetch_lists" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::SliceInvertedLists const *)arg1)->prefetch_lists((faiss::InvertedLists::idx_t const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_SliceInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::SliceInvertedLists *arg1 = (faiss::SliceInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__SliceInvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_SliceInvertedLists" "', argument " "1"" of type '" "faiss::SliceInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::SliceInvertedLists * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *SliceInvertedLists_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__SliceInvertedLists, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *SliceInvertedLists_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_VStackInvertedLists_ils_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VStackInvertedLists *arg1 = (faiss::VStackInvertedLists *) 0 ;
+  std::vector< faiss::InvertedLists const * > *arg2 = (std::vector< faiss::InvertedLists const * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VStackInvertedLists_ils_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VStackInvertedLists_ils_set" "', argument " "1"" of type '" "faiss::VStackInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VStackInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__InvertedLists_const_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "VStackInvertedLists_ils_set" "', argument " "2"" of type '" "std::vector< faiss::InvertedLists const * > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::InvertedLists const * > * >(argp2);
+  if (arg1) (arg1)->ils = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VStackInvertedLists_ils_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VStackInvertedLists *arg1 = (faiss::VStackInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::InvertedLists const * > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VStackInvertedLists_ils_get" "', argument " "1"" of type '" "faiss::VStackInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VStackInvertedLists * >(argp1);
+  result = (std::vector< faiss::InvertedLists const * > *)& ((arg1)->ils);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__InvertedLists_const_p_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VStackInvertedLists_cumsz_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VStackInvertedLists *arg1 = (faiss::VStackInvertedLists *) 0 ;
+  std::vector< faiss::InvertedLists::idx_t > *arg2 = (std::vector< faiss::InvertedLists::idx_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VStackInvertedLists_cumsz_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VStackInvertedLists_cumsz_set" "', argument " "1"" of type '" "faiss::VStackInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VStackInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "VStackInvertedLists_cumsz_set" "', argument " "2"" of type '" "std::vector< faiss::InvertedLists::idx_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::InvertedLists::idx_t > * >(argp2);
+  if (arg1) (arg1)->cumsz = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VStackInvertedLists_cumsz_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VStackInvertedLists *arg1 = (faiss::VStackInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::InvertedLists::idx_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VStackInvertedLists_cumsz_get" "', argument " "1"" of type '" "faiss::VStackInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VStackInvertedLists * >(argp1);
+  result = (std::vector< faiss::InvertedLists::idx_t > *)& ((arg1)->cumsz);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_VStackInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  faiss::InvertedLists **arg2 = (faiss::InvertedLists **) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::VStackInvertedLists *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_VStackInvertedLists", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_VStackInvertedLists" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_VStackInvertedLists" "', argument " "2"" of type '" "faiss::InvertedLists const **""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists ** >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::VStackInvertedLists *)new faiss::VStackInvertedLists(arg1,(faiss::InvertedLists const **)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__VStackInvertedLists, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VStackInvertedLists_list_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VStackInvertedLists *arg1 = (faiss::VStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VStackInvertedLists_list_size", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VStackInvertedLists_list_size" "', argument " "1"" of type '" "faiss::VStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VStackInvertedLists_list_size" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::VStackInvertedLists const *)arg1)->list_size(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VStackInvertedLists_get_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VStackInvertedLists *arg1 = (faiss::VStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VStackInvertedLists_get_codes", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VStackInvertedLists_get_codes" "', argument " "1"" of type '" "faiss::VStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VStackInvertedLists_get_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::VStackInvertedLists const *)arg1)->get_codes(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VStackInvertedLists_get_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VStackInvertedLists *arg1 = (faiss::VStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedLists::idx_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VStackInvertedLists_get_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VStackInvertedLists_get_ids" "', argument " "1"" of type '" "faiss::VStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VStackInvertedLists_get_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t *)((faiss::VStackInvertedLists const *)arg1)->get_ids(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VStackInvertedLists_release_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VStackInvertedLists *arg1 = (faiss::VStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VStackInvertedLists_release_codes", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VStackInvertedLists_release_codes" "', argument " "1"" of type '" "faiss::VStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VStackInvertedLists_release_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "VStackInvertedLists_release_codes" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::VStackInvertedLists const *)arg1)->release_codes(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VStackInvertedLists_release_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VStackInvertedLists *arg1 = (faiss::VStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  faiss::InvertedLists::idx_t *arg3 = (faiss::InvertedLists::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VStackInvertedLists_release_ids", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VStackInvertedLists_release_ids" "', argument " "1"" of type '" "faiss::VStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VStackInvertedLists_release_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "VStackInvertedLists_release_ids" "', argument " "3"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::VStackInvertedLists const *)arg1)->release_ids(arg2,(faiss::InvertedLists::idx_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VStackInvertedLists_get_single_id(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VStackInvertedLists *arg1 = (faiss::VStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::InvertedLists::idx_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VStackInvertedLists_get_single_id", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VStackInvertedLists_get_single_id" "', argument " "1"" of type '" "faiss::VStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VStackInvertedLists_get_single_id" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "VStackInvertedLists_get_single_id" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t)((faiss::VStackInvertedLists const *)arg1)->get_single_id(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VStackInvertedLists_get_single_code(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VStackInvertedLists *arg1 = (faiss::VStackInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VStackInvertedLists_get_single_code", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VStackInvertedLists_get_single_code" "', argument " "1"" of type '" "faiss::VStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VStackInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VStackInvertedLists_get_single_code" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "VStackInvertedLists_get_single_code" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::VStackInvertedLists const *)arg1)->get_single_code(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VStackInvertedLists_prefetch_lists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VStackInvertedLists *arg1 = (faiss::VStackInvertedLists *) 0 ;
+  faiss::InvertedLists::idx_t *arg2 = (faiss::InvertedLists::idx_t *) 0 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VStackInvertedLists_prefetch_lists", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VStackInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VStackInvertedLists_prefetch_lists" "', argument " "1"" of type '" "faiss::VStackInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VStackInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "VStackInvertedLists_prefetch_lists" "', argument " "2"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "VStackInvertedLists_prefetch_lists" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::VStackInvertedLists const *)arg1)->prefetch_lists((faiss::InvertedLists::idx_t const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_VStackInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VStackInvertedLists *arg1 = (faiss::VStackInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VStackInvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_VStackInvertedLists" "', argument " "1"" of type '" "faiss::VStackInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VStackInvertedLists * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *VStackInvertedLists_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__VStackInvertedLists, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *VStackInvertedLists_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_MaskedInvertedLists_il0_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MaskedInvertedLists *arg1 = (faiss::MaskedInvertedLists *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MaskedInvertedLists_il0_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MaskedInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MaskedInvertedLists_il0_set" "', argument " "1"" of type '" "faiss::MaskedInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MaskedInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "MaskedInvertedLists_il0_set" "', argument " "2"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  if (arg1) (arg1)->il0 = (faiss::InvertedLists const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MaskedInvertedLists_il0_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MaskedInvertedLists *arg1 = (faiss::MaskedInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::InvertedLists *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MaskedInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MaskedInvertedLists_il0_get" "', argument " "1"" of type '" "faiss::MaskedInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MaskedInvertedLists * >(argp1);
+  result = (faiss::InvertedLists *) ((arg1)->il0);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MaskedInvertedLists_il1_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MaskedInvertedLists *arg1 = (faiss::MaskedInvertedLists *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MaskedInvertedLists_il1_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MaskedInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MaskedInvertedLists_il1_set" "', argument " "1"" of type '" "faiss::MaskedInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MaskedInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "MaskedInvertedLists_il1_set" "', argument " "2"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  if (arg1) (arg1)->il1 = (faiss::InvertedLists const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MaskedInvertedLists_il1_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MaskedInvertedLists *arg1 = (faiss::MaskedInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::InvertedLists *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MaskedInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MaskedInvertedLists_il1_get" "', argument " "1"" of type '" "faiss::MaskedInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MaskedInvertedLists * >(argp1);
+  result = (faiss::InvertedLists *) ((arg1)->il1);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_MaskedInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::MaskedInvertedLists *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_MaskedInvertedLists", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_MaskedInvertedLists" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_MaskedInvertedLists" "', argument " "2"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::MaskedInvertedLists *)new faiss::MaskedInvertedLists((faiss::InvertedLists const *)arg1,(faiss::InvertedLists const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__MaskedInvertedLists, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MaskedInvertedLists_list_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MaskedInvertedLists *arg1 = (faiss::MaskedInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MaskedInvertedLists_list_size", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MaskedInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MaskedInvertedLists_list_size" "', argument " "1"" of type '" "faiss::MaskedInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MaskedInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MaskedInvertedLists_list_size" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::MaskedInvertedLists const *)arg1)->list_size(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MaskedInvertedLists_get_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MaskedInvertedLists *arg1 = (faiss::MaskedInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MaskedInvertedLists_get_codes", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MaskedInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MaskedInvertedLists_get_codes" "', argument " "1"" of type '" "faiss::MaskedInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MaskedInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MaskedInvertedLists_get_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::MaskedInvertedLists const *)arg1)->get_codes(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MaskedInvertedLists_get_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MaskedInvertedLists *arg1 = (faiss::MaskedInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedLists::idx_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MaskedInvertedLists_get_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MaskedInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MaskedInvertedLists_get_ids" "', argument " "1"" of type '" "faiss::MaskedInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MaskedInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MaskedInvertedLists_get_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t *)((faiss::MaskedInvertedLists const *)arg1)->get_ids(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MaskedInvertedLists_release_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MaskedInvertedLists *arg1 = (faiss::MaskedInvertedLists *) 0 ;
+  size_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MaskedInvertedLists_release_codes", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MaskedInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MaskedInvertedLists_release_codes" "', argument " "1"" of type '" "faiss::MaskedInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MaskedInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MaskedInvertedLists_release_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "MaskedInvertedLists_release_codes" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::MaskedInvertedLists const *)arg1)->release_codes(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MaskedInvertedLists_release_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MaskedInvertedLists *arg1 = (faiss::MaskedInvertedLists *) 0 ;
+  size_t arg2 ;
+  faiss::InvertedLists::idx_t *arg3 = (faiss::InvertedLists::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MaskedInvertedLists_release_ids", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MaskedInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MaskedInvertedLists_release_ids" "', argument " "1"" of type '" "faiss::MaskedInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MaskedInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MaskedInvertedLists_release_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "MaskedInvertedLists_release_ids" "', argument " "3"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::MaskedInvertedLists const *)arg1)->release_ids(arg2,(faiss::InvertedLists::idx_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MaskedInvertedLists_get_single_id(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MaskedInvertedLists *arg1 = (faiss::MaskedInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::InvertedLists::idx_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MaskedInvertedLists_get_single_id", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MaskedInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MaskedInvertedLists_get_single_id" "', argument " "1"" of type '" "faiss::MaskedInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MaskedInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MaskedInvertedLists_get_single_id" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "MaskedInvertedLists_get_single_id" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t)((faiss::MaskedInvertedLists const *)arg1)->get_single_id(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MaskedInvertedLists_get_single_code(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MaskedInvertedLists *arg1 = (faiss::MaskedInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MaskedInvertedLists_get_single_code", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MaskedInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MaskedInvertedLists_get_single_code" "', argument " "1"" of type '" "faiss::MaskedInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MaskedInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MaskedInvertedLists_get_single_code" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "MaskedInvertedLists_get_single_code" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::MaskedInvertedLists const *)arg1)->get_single_code(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MaskedInvertedLists_prefetch_lists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MaskedInvertedLists *arg1 = (faiss::MaskedInvertedLists *) 0 ;
+  faiss::InvertedLists::idx_t *arg2 = (faiss::InvertedLists::idx_t *) 0 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MaskedInvertedLists_prefetch_lists", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MaskedInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MaskedInvertedLists_prefetch_lists" "', argument " "1"" of type '" "faiss::MaskedInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MaskedInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "MaskedInvertedLists_prefetch_lists" "', argument " "2"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "MaskedInvertedLists_prefetch_lists" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::MaskedInvertedLists const *)arg1)->prefetch_lists((faiss::InvertedLists::idx_t const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_MaskedInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MaskedInvertedLists *arg1 = (faiss::MaskedInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MaskedInvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_MaskedInvertedLists" "', argument " "1"" of type '" "faiss::MaskedInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MaskedInvertedLists * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *MaskedInvertedLists_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__MaskedInvertedLists, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *MaskedInvertedLists_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_StopWordsInvertedLists_il0_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::StopWordsInvertedLists *arg1 = (faiss::StopWordsInvertedLists *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StopWordsInvertedLists_il0_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__StopWordsInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StopWordsInvertedLists_il0_set" "', argument " "1"" of type '" "faiss::StopWordsInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::StopWordsInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "StopWordsInvertedLists_il0_set" "', argument " "2"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  if (arg1) (arg1)->il0 = (faiss::InvertedLists const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StopWordsInvertedLists_il0_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::StopWordsInvertedLists *arg1 = (faiss::StopWordsInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::InvertedLists *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__StopWordsInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StopWordsInvertedLists_il0_get" "', argument " "1"" of type '" "faiss::StopWordsInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::StopWordsInvertedLists * >(argp1);
+  result = (faiss::InvertedLists *) ((arg1)->il0);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StopWordsInvertedLists_maxsize_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::StopWordsInvertedLists *arg1 = (faiss::StopWordsInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StopWordsInvertedLists_maxsize_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__StopWordsInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StopWordsInvertedLists_maxsize_set" "', argument " "1"" of type '" "faiss::StopWordsInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::StopWordsInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StopWordsInvertedLists_maxsize_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->maxsize = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StopWordsInvertedLists_maxsize_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::StopWordsInvertedLists *arg1 = (faiss::StopWordsInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__StopWordsInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StopWordsInvertedLists_maxsize_get" "', argument " "1"" of type '" "faiss::StopWordsInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::StopWordsInvertedLists * >(argp1);
+  result = (size_t) ((arg1)->maxsize);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_StopWordsInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::StopWordsInvertedLists *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_StopWordsInvertedLists", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_StopWordsInvertedLists" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_StopWordsInvertedLists" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::StopWordsInvertedLists *)new faiss::StopWordsInvertedLists((faiss::InvertedLists const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__StopWordsInvertedLists, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StopWordsInvertedLists_list_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::StopWordsInvertedLists *arg1 = (faiss::StopWordsInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StopWordsInvertedLists_list_size", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__StopWordsInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StopWordsInvertedLists_list_size" "', argument " "1"" of type '" "faiss::StopWordsInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::StopWordsInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StopWordsInvertedLists_list_size" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::StopWordsInvertedLists const *)arg1)->list_size(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StopWordsInvertedLists_get_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::StopWordsInvertedLists *arg1 = (faiss::StopWordsInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StopWordsInvertedLists_get_codes", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__StopWordsInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StopWordsInvertedLists_get_codes" "', argument " "1"" of type '" "faiss::StopWordsInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::StopWordsInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StopWordsInvertedLists_get_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::StopWordsInvertedLists const *)arg1)->get_codes(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StopWordsInvertedLists_get_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::StopWordsInvertedLists *arg1 = (faiss::StopWordsInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedLists::idx_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StopWordsInvertedLists_get_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__StopWordsInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StopWordsInvertedLists_get_ids" "', argument " "1"" of type '" "faiss::StopWordsInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::StopWordsInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StopWordsInvertedLists_get_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t *)((faiss::StopWordsInvertedLists const *)arg1)->get_ids(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StopWordsInvertedLists_release_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::StopWordsInvertedLists *arg1 = (faiss::StopWordsInvertedLists *) 0 ;
+  size_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StopWordsInvertedLists_release_codes", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__StopWordsInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StopWordsInvertedLists_release_codes" "', argument " "1"" of type '" "faiss::StopWordsInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::StopWordsInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StopWordsInvertedLists_release_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "StopWordsInvertedLists_release_codes" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::StopWordsInvertedLists const *)arg1)->release_codes(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StopWordsInvertedLists_release_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::StopWordsInvertedLists *arg1 = (faiss::StopWordsInvertedLists *) 0 ;
+  size_t arg2 ;
+  faiss::InvertedLists::idx_t *arg3 = (faiss::InvertedLists::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StopWordsInvertedLists_release_ids", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__StopWordsInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StopWordsInvertedLists_release_ids" "', argument " "1"" of type '" "faiss::StopWordsInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::StopWordsInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StopWordsInvertedLists_release_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "StopWordsInvertedLists_release_ids" "', argument " "3"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::StopWordsInvertedLists const *)arg1)->release_ids(arg2,(faiss::InvertedLists::idx_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StopWordsInvertedLists_get_single_id(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::StopWordsInvertedLists *arg1 = (faiss::StopWordsInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::InvertedLists::idx_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StopWordsInvertedLists_get_single_id", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__StopWordsInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StopWordsInvertedLists_get_single_id" "', argument " "1"" of type '" "faiss::StopWordsInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::StopWordsInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StopWordsInvertedLists_get_single_id" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "StopWordsInvertedLists_get_single_id" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t)((faiss::StopWordsInvertedLists const *)arg1)->get_single_id(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StopWordsInvertedLists_get_single_code(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::StopWordsInvertedLists *arg1 = (faiss::StopWordsInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StopWordsInvertedLists_get_single_code", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__StopWordsInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StopWordsInvertedLists_get_single_code" "', argument " "1"" of type '" "faiss::StopWordsInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::StopWordsInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "StopWordsInvertedLists_get_single_code" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "StopWordsInvertedLists_get_single_code" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::StopWordsInvertedLists const *)arg1)->get_single_code(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_StopWordsInvertedLists_prefetch_lists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::StopWordsInvertedLists *arg1 = (faiss::StopWordsInvertedLists *) 0 ;
+  faiss::InvertedLists::idx_t *arg2 = (faiss::InvertedLists::idx_t *) 0 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "StopWordsInvertedLists_prefetch_lists", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__StopWordsInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "StopWordsInvertedLists_prefetch_lists" "', argument " "1"" of type '" "faiss::StopWordsInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::StopWordsInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "StopWordsInvertedLists_prefetch_lists" "', argument " "2"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "StopWordsInvertedLists_prefetch_lists" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::StopWordsInvertedLists const *)arg1)->prefetch_lists((faiss::InvertedLists::idx_t const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_StopWordsInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::StopWordsInvertedLists *arg1 = (faiss::StopWordsInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__StopWordsInvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_StopWordsInvertedLists" "', argument " "1"" of type '" "faiss::StopWordsInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::StopWordsInvertedLists * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *StopWordsInvertedLists_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__StopWordsInvertedLists, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *StopWordsInvertedLists_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_InvertedListsIOHook_key_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedListsIOHook *arg1 = (faiss::InvertedListsIOHook *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedListsIOHook, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsIOHook_key_get" "', argument " "1"" of type '" "faiss::InvertedListsIOHook *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedListsIOHook * >(argp1);
+  result = (std::string *) & ((arg1)->key);
+  resultobj = SWIG_From_std_string(static_cast< std::string >(*result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsIOHook_classname_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedListsIOHook *arg1 = (faiss::InvertedListsIOHook *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedListsIOHook, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsIOHook_classname_get" "', argument " "1"" of type '" "faiss::InvertedListsIOHook *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedListsIOHook * >(argp1);
+  result = (std::string *) & ((arg1)->classname);
+  resultobj = SWIG_From_std_string(static_cast< std::string >(*result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsIOHook_write(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedListsIOHook *arg1 = (faiss::InvertedListsIOHook *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  faiss::IOWriter *arg3 = (faiss::IOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedListsIOHook_write", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedListsIOHook, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsIOHook_write" "', argument " "1"" of type '" "faiss::InvertedListsIOHook const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedListsIOHook * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "InvertedListsIOHook_write" "', argument " "2"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_faiss__IOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "InvertedListsIOHook_write" "', argument " "3"" of type '" "faiss::IOWriter *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IOWriter * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::InvertedListsIOHook const *)arg1)->write((faiss::InvertedLists const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsIOHook_read(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedListsIOHook *arg1 = (faiss::InvertedListsIOHook *) 0 ;
+  faiss::IOReader *arg2 = (faiss::IOReader *) 0 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::InvertedLists *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedListsIOHook_read", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedListsIOHook, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsIOHook_read" "', argument " "1"" of type '" "faiss::InvertedListsIOHook const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedListsIOHook * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "InvertedListsIOHook_read" "', argument " "2"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IOReader * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "InvertedListsIOHook_read" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists *)((faiss::InvertedListsIOHook const *)arg1)->read(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsIOHook_read_ArrayInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedListsIOHook *arg1 = (faiss::InvertedListsIOHook *) 0 ;
+  faiss::IOReader *arg2 = (faiss::IOReader *) 0 ;
+  int arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  std::vector< size_t > *arg6 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  faiss::InvertedLists *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedListsIOHook_read_ArrayInvertedLists", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedListsIOHook, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsIOHook_read_ArrayInvertedLists" "', argument " "1"" of type '" "faiss::InvertedListsIOHook const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedListsIOHook * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "InvertedListsIOHook_read_ArrayInvertedLists" "', argument " "2"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IOReader * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "InvertedListsIOHook_read_ArrayInvertedLists" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "InvertedListsIOHook_read_ArrayInvertedLists" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "InvertedListsIOHook_read_ArrayInvertedLists" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6, SWIGTYPE_p_std__vectorT_unsigned_long_t,  0  | 0);
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "InvertedListsIOHook_read_ArrayInvertedLists" "', argument " "6"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  if (!argp6) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "InvertedListsIOHook_read_ArrayInvertedLists" "', argument " "6"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  arg6 = reinterpret_cast< std::vector< size_t > * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists *)((faiss::InvertedListsIOHook const *)arg1)->read_ArrayInvertedLists(arg2,arg3,arg4,arg5,(std::vector< size_t > const &)*arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_InvertedListsIOHook(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedListsIOHook *arg1 = (faiss::InvertedListsIOHook *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedListsIOHook, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_InvertedListsIOHook" "', argument " "1"" of type '" "faiss::InvertedListsIOHook *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedListsIOHook * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsIOHook_add_callback(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedListsIOHook *arg1 = (faiss::InvertedListsIOHook *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedListsIOHook, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsIOHook_add_callback" "', argument " "1"" of type '" "faiss::InvertedListsIOHook *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedListsIOHook * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::InvertedListsIOHook::add_callback(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsIOHook_print_callbacks(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InvertedListsIOHook_print_callbacks", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::InvertedListsIOHook::print_callbacks();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsIOHook_lookup(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::InvertedListsIOHook *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "InvertedListsIOHook_lookup" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedListsIOHook *)faiss::InvertedListsIOHook::lookup(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedListsIOHook, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InvertedListsIOHook_lookup_classname(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  std::string *arg1 = 0 ;
+  int res1 = SWIG_OLDOBJ ;
+  PyObject *swig_obj[1] ;
+  faiss::InvertedListsIOHook *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  {
+    std::string *ptr = (std::string *)0;
+    res1 = SWIG_AsPtr_std_string(swig_obj[0], &ptr);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InvertedListsIOHook_lookup_classname" "', argument " "1"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "InvertedListsIOHook_lookup_classname" "', argument " "1"" of type '" "std::string const &""'"); 
+    }
+    arg1 = ptr;
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedListsIOHook *)faiss::InvertedListsIOHook::lookup_classname((std::string const &)*arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedListsIOHook, 0 |  0 );
+  if (SWIG_IsNewObj(res1)) delete arg1;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res1)) delete arg1;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *InvertedListsIOHook_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__InvertedListsIOHook, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_n_per_block_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BlockInvertedLists_n_per_block_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_n_per_block_set" "', argument " "1"" of type '" "faiss::BlockInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BlockInvertedLists_n_per_block_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->n_per_block = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_n_per_block_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_n_per_block_get" "', argument " "1"" of type '" "faiss::BlockInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  result = (size_t) ((arg1)->n_per_block);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_block_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BlockInvertedLists_block_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_block_size_set" "', argument " "1"" of type '" "faiss::BlockInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BlockInvertedLists_block_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->block_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_block_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_block_size_get" "', argument " "1"" of type '" "faiss::BlockInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  result = (size_t) ((arg1)->block_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_codes_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  std::vector< faiss::AlignedTable< uint8_t > > *arg2 = (std::vector< faiss::AlignedTable< uint8_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BlockInvertedLists_codes_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_codes_set" "', argument " "1"" of type '" "faiss::BlockInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__AlignedTableT_uint8_t_32_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "BlockInvertedLists_codes_set" "', argument " "2"" of type '" "std::vector< faiss::AlignedTable< uint8_t > > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::AlignedTable< uint8_t > > * >(argp2);
+  if (arg1) (arg1)->codes = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_codes_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::AlignedTable< uint8_t > > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_codes_get" "', argument " "1"" of type '" "faiss::BlockInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  result = (std::vector< faiss::AlignedTable< uint8_t > > *)& ((arg1)->codes);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__AlignedTableT_uint8_t_32_t_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_ids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  std::vector< std::vector< faiss::InvertedLists::idx_t > > *arg2 = (std::vector< std::vector< faiss::InvertedLists::idx_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BlockInvertedLists_ids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_ids_set" "', argument " "1"" of type '" "faiss::BlockInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "BlockInvertedLists_ids_set" "', argument " "2"" of type '" "std::vector< std::vector< faiss::InvertedLists::idx_t > > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< std::vector< faiss::InvertedLists::idx_t > > * >(argp2);
+  if (arg1) (arg1)->ids = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_ids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< std::vector< faiss::InvertedLists::idx_t > > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_ids_get" "', argument " "1"" of type '" "faiss::BlockInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  result = (std::vector< std::vector< faiss::InvertedLists::idx_t > > *)& ((arg1)->ids);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_std__vectorT_int64_t_t_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_BlockInvertedLists__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::BlockInvertedLists *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_BlockInvertedLists" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_BlockInvertedLists" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_BlockInvertedLists" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::BlockInvertedLists *)new faiss::BlockInvertedLists(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__BlockInvertedLists, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_BlockInvertedLists__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::BlockInvertedLists *)new faiss::BlockInvertedLists();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__BlockInvertedLists, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_BlockInvertedLists(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_BlockInvertedLists", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_BlockInvertedLists__SWIG_1(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_BlockInvertedLists__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_BlockInvertedLists'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::BlockInvertedLists::BlockInvertedLists(size_t,size_t,size_t)\n"
+    "    faiss::BlockInvertedLists::BlockInvertedLists()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_list_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BlockInvertedLists_list_size", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_list_size" "', argument " "1"" of type '" "faiss::BlockInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BlockInvertedLists_list_size" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::BlockInvertedLists const *)arg1)->list_size(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_get_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BlockInvertedLists_get_codes", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_get_codes" "', argument " "1"" of type '" "faiss::BlockInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BlockInvertedLists_get_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::BlockInvertedLists const *)arg1)->get_codes(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_get_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedLists::idx_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BlockInvertedLists_get_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_get_ids" "', argument " "1"" of type '" "faiss::BlockInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BlockInvertedLists_get_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t *)((faiss::BlockInvertedLists const *)arg1)->get_ids(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_add_entries(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::InvertedLists::idx_t *arg4 = (faiss::InvertedLists::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BlockInvertedLists_add_entries", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_add_entries" "', argument " "1"" of type '" "faiss::BlockInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BlockInvertedLists_add_entries" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "BlockInvertedLists_add_entries" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "BlockInvertedLists_add_entries" "', argument " "4"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "BlockInvertedLists_add_entries" "', argument " "5"" of type '" "uint8_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->add_entries(arg2,arg3,(faiss::InvertedLists::idx_t const *)arg4,(uint8_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_update_entries(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  faiss::InvertedLists::idx_t *arg5 = (faiss::InvertedLists::idx_t *) 0 ;
+  uint8_t *arg6 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BlockInvertedLists_update_entries", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_update_entries" "', argument " "1"" of type '" "faiss::BlockInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BlockInvertedLists_update_entries" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "BlockInvertedLists_update_entries" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "BlockInvertedLists_update_entries" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "BlockInvertedLists_update_entries" "', argument " "5"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "BlockInvertedLists_update_entries" "', argument " "6"" of type '" "uint8_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< uint8_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->update_entries(arg2,arg3,arg4,(faiss::InvertedLists::idx_t const *)arg5,(uint8_t const *)arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BlockInvertedLists_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BlockInvertedLists_resize", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BlockInvertedLists_resize" "', argument " "1"" of type '" "faiss::BlockInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BlockInvertedLists_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "BlockInvertedLists_resize" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_BlockInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BlockInvertedLists *arg1 = (faiss::BlockInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BlockInvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_BlockInvertedLists" "', argument " "1"" of type '" "faiss::BlockInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BlockInvertedLists * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *BlockInvertedLists_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__BlockInvertedLists, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *BlockInvertedLists_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_lo_build(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint64_t arg1 ;
+  uint64_t arg2 ;
+  unsigned long val1 ;
+  int ecode1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "lo_build", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_unsigned_SS_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "lo_build" "', argument " "1"" of type '" "uint64_t""'");
+  } 
+  arg1 = static_cast< uint64_t >(val1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "lo_build" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)faiss::lo_build(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_lo_listno(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint64_t arg1 ;
+  unsigned long val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_unsigned_SS_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "lo_listno" "', argument " "1"" of type '" "uint64_t""'");
+  } 
+  arg1 = static_cast< uint64_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)faiss::lo_listno(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_lo_offset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  uint64_t arg1 ;
+  unsigned long val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_unsigned_SS_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "lo_offset" "', argument " "1"" of type '" "uint64_t""'");
+  } 
+  arg1 = static_cast< uint64_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)faiss::lo_offset(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_type_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  faiss::DirectMap::Type arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMap_type_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_type_set" "', argument " "1"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "DirectMap_type_set" "', argument " "2"" of type '" "faiss::DirectMap::Type""'");
+  } 
+  arg2 = static_cast< faiss::DirectMap::Type >(val2);
+  if (arg1) (arg1)->type = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_type_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DirectMap::Type result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_type_get" "', argument " "1"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  result = (faiss::DirectMap::Type) ((arg1)->type);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_array_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  std::vector< faiss::DirectMap::idx_t > *arg2 = (std::vector< faiss::DirectMap::idx_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMap_array_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_array_set" "', argument " "1"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "DirectMap_array_set" "', argument " "2"" of type '" "std::vector< faiss::DirectMap::idx_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::DirectMap::idx_t > * >(argp2);
+  if (arg1) (arg1)->array = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_array_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::DirectMap::idx_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_array_get" "', argument " "1"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  result = (std::vector< faiss::DirectMap::idx_t > *)& ((arg1)->array);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_hashtable_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  std::unordered_map< faiss::DirectMap::idx_t,faiss::DirectMap::idx_t > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMap_hashtable_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_hashtable_set" "', argument " "1"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__unordered_mapT_long_long_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "DirectMap_hashtable_set" "', argument " "2"" of type '" "std::unordered_map< faiss::DirectMap::idx_t,faiss::DirectMap::idx_t >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "DirectMap_hashtable_set" "', argument " "2"" of type '" "std::unordered_map< faiss::DirectMap::idx_t,faiss::DirectMap::idx_t >""'");
+    } else {
+      std::unordered_map< faiss::DirectMap::idx_t,faiss::DirectMap::idx_t > * temp = reinterpret_cast< std::unordered_map< faiss::DirectMap::idx_t,faiss::DirectMap::idx_t > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  if (arg1) (arg1)->hashtable = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_hashtable_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::unordered_map< faiss::DirectMap::idx_t,faiss::DirectMap::idx_t > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_hashtable_get" "', argument " "1"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  result =  ((arg1)->hashtable);
+  resultobj = SWIG_NewPointerObj((new std::unordered_map< faiss::DirectMap::idx_t,faiss::DirectMap::idx_t >(static_cast< const std::unordered_map< faiss::DirectMap::idx_t,faiss::DirectMap::idx_t >& >(result))), SWIGTYPE_p_std__unordered_mapT_long_long_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_DirectMap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_DirectMap", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::DirectMap *)new faiss::DirectMap();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DirectMap, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_set_type(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  faiss::DirectMap::Type arg2 ;
+  faiss::InvertedLists *arg3 = (faiss::InvertedLists *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMap_set_type", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_set_type" "', argument " "1"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "DirectMap_set_type" "', argument " "2"" of type '" "faiss::DirectMap::Type""'");
+  } 
+  arg2 = static_cast< faiss::DirectMap::Type >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "DirectMap_set_type" "', argument " "3"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::InvertedLists * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "DirectMap_set_type" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_type(arg2,(faiss::InvertedLists const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  faiss::DirectMap::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::DirectMap::idx_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMap_get", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_get" "', argument " "1"" of type '" "faiss::DirectMap const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "DirectMap_get" "', argument " "2"" of type '" "faiss::DirectMap::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::DirectMap::idx_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::DirectMap::idx_t)((faiss::DirectMap const *)arg1)->get(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_no(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_no" "', argument " "1"" of type '" "faiss::DirectMap const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)((faiss::DirectMap const *)arg1)->no();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_check_can_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  faiss::DirectMap::idx_t *arg2 = (faiss::DirectMap::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMap_check_can_add", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_check_can_add" "', argument " "1"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "DirectMap_check_can_add" "', argument " "2"" of type '" "faiss::DirectMap::idx_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DirectMap::idx_t * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->check_can_add((faiss::DirectMap::idx_t const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_add_single_id(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  faiss::DirectMap::idx_t arg2 ;
+  faiss::DirectMap::idx_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMap_add_single_id", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_add_single_id" "', argument " "1"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "DirectMap_add_single_id" "', argument " "2"" of type '" "faiss::DirectMap::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::DirectMap::idx_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "DirectMap_add_single_id" "', argument " "3"" of type '" "faiss::DirectMap::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::DirectMap::idx_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "DirectMap_add_single_id" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_single_id(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_clear" "', argument " "1"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  faiss::InvertedLists *arg3 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMap_remove_ids", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_remove_ids" "', argument " "1"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "DirectMap_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "DirectMap_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "DirectMap_remove_ids" "', argument " "3"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::InvertedLists * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMap_update_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  int arg3 ;
+  faiss::DirectMap::idx_t *arg4 = (faiss::DirectMap::idx_t *) 0 ;
+  faiss::DirectMap::idx_t *arg5 = (faiss::DirectMap::idx_t *) 0 ;
+  uint8_t *arg6 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMap_update_codes", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMap_update_codes" "', argument " "1"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "DirectMap_update_codes" "', argument " "2"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "DirectMap_update_codes" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "DirectMap_update_codes" "', argument " "4"" of type '" "faiss::DirectMap::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::DirectMap::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "DirectMap_update_codes" "', argument " "5"" of type '" "faiss::DirectMap::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::DirectMap::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "DirectMap_update_codes" "', argument " "6"" of type '" "uint8_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< uint8_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->update_codes(arg2,arg3,(faiss::DirectMap::idx_t const *)arg4,(faiss::DirectMap::idx_t const *)arg5,(uint8_t const *)arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_DirectMap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = (faiss::DirectMap *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMap, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_DirectMap" "', argument " "1"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *DirectMap_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__DirectMap, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *DirectMap_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_DirectMapAdd_direct_map_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  faiss::DirectMap *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMapAdd_direct_map_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMapAdd_direct_map_set" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__DirectMap,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "DirectMapAdd_direct_map_set" "', argument " "2"" of type '" "faiss::DirectMap &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "DirectMapAdd_direct_map_set" "', argument " "2"" of type '" "faiss::DirectMap &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DirectMap * >(argp2);
+  if (arg1) (arg1)->direct_map = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMapAdd_direct_map_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DirectMap *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMapAdd_direct_map_get" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  result = (faiss::DirectMap *) &(faiss::DirectMap &) ((arg1)->direct_map);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMapAdd_type_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  faiss::DirectMap::Type arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMapAdd_type_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMapAdd_type_set" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "DirectMapAdd_type_set" "', argument " "2"" of type '" "faiss::DirectMap::Type""'");
+  } 
+  arg2 = static_cast< faiss::DirectMap::Type >(val2);
+  if (arg1) (arg1)->type = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMapAdd_type_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DirectMap::Type result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMapAdd_type_get" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  result = (faiss::DirectMap::Type) ((arg1)->type);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMapAdd_ntotal_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMapAdd_ntotal_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMapAdd_ntotal_set" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "DirectMapAdd_ntotal_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->ntotal = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMapAdd_ntotal_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMapAdd_ntotal_get" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  result = (size_t) ((arg1)->ntotal);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMapAdd_n_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMapAdd_n_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMapAdd_n_set" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "DirectMapAdd_n_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->n = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMapAdd_n_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMapAdd_n_get" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  result = (size_t) ((arg1)->n);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMapAdd_xids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  faiss::DirectMapAdd::idx_t *arg2 = (faiss::DirectMapAdd::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMapAdd_xids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMapAdd_xids_set" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "DirectMapAdd_xids_set" "', argument " "2"" of type '" "faiss::DirectMapAdd::idx_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DirectMapAdd::idx_t * >(argp2);
+  if (arg1) (arg1)->xids = (faiss::DirectMapAdd::idx_t const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMapAdd_xids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DirectMapAdd::idx_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMapAdd_xids_get" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  result = (faiss::DirectMapAdd::idx_t *) ((arg1)->xids);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMapAdd_all_ofs_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  std::vector< faiss::DirectMapAdd::idx_t > *arg2 = (std::vector< faiss::DirectMapAdd::idx_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMapAdd_all_ofs_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMapAdd_all_ofs_set" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "DirectMapAdd_all_ofs_set" "', argument " "2"" of type '" "std::vector< faiss::DirectMapAdd::idx_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::DirectMapAdd::idx_t > * >(argp2);
+  if (arg1) (arg1)->all_ofs = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMapAdd_all_ofs_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::DirectMapAdd::idx_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMapAdd_all_ofs_get" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  result = (std::vector< faiss::DirectMapAdd::idx_t > *)& ((arg1)->all_ofs);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_DirectMapAdd(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMap *arg1 = 0 ;
+  size_t arg2 ;
+  faiss::DirectMapAdd::idx_t *arg3 = (faiss::DirectMapAdd::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::DirectMapAdd *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_DirectMapAdd", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_faiss__DirectMap,  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_DirectMapAdd" "', argument " "1"" of type '" "faiss::DirectMap &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_DirectMapAdd" "', argument " "1"" of type '" "faiss::DirectMap &""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMap * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_DirectMapAdd" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_DirectMapAdd" "', argument " "3"" of type '" "faiss::DirectMapAdd::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::DirectMapAdd::idx_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::DirectMapAdd *)new faiss::DirectMapAdd(*arg1,arg2,(faiss::DirectMapAdd::idx_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DirectMapAdd, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DirectMapAdd_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  size_t arg2 ;
+  faiss::DirectMapAdd::idx_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DirectMapAdd_add", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DirectMapAdd_add" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "DirectMapAdd_add" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "DirectMapAdd_add" "', argument " "3"" of type '" "faiss::DirectMapAdd::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::DirectMapAdd::idx_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "DirectMapAdd_add" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_DirectMapAdd(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DirectMapAdd *arg1 = (faiss::DirectMapAdd *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DirectMapAdd, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_DirectMapAdd" "', argument " "1"" of type '" "faiss::DirectMapAdd *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DirectMapAdd * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *DirectMapAdd_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__DirectMapAdd, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *DirectMapAdd_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_quantizer_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Level1Quantizer_quantizer_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_quantizer_set" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Level1Quantizer_quantizer_set" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  if (arg1) (arg1)->quantizer = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_quantizer_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_quantizer_get" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  result = (faiss::Index *) ((arg1)->quantizer);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_nlist_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Level1Quantizer_nlist_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_nlist_set" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Level1Quantizer_nlist_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nlist = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_nlist_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_nlist_get" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  result = (size_t) ((arg1)->nlist);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_quantizer_trains_alone_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  char arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  char val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Level1Quantizer_quantizer_trains_alone_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_quantizer_trains_alone_set" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  ecode2 = SWIG_AsVal_char(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Level1Quantizer_quantizer_trains_alone_set" "', argument " "2"" of type '" "char""'");
+  } 
+  arg2 = static_cast< char >(val2);
+  if (arg1) (arg1)->quantizer_trains_alone = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_quantizer_trains_alone_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  char result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_quantizer_trains_alone_get" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  result = (char) ((arg1)->quantizer_trains_alone);
+  resultobj = SWIG_From_char(static_cast< char >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Level1Quantizer_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_own_fields_set" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Level1Quantizer_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_own_fields_get" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_cp_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  faiss::ClusteringParameters *arg2 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Level1Quantizer_cp_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_cp_set" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Level1Quantizer_cp_set" "', argument " "2"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ClusteringParameters * >(argp2);
+  if (arg1) (arg1)->cp = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_cp_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ClusteringParameters *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_cp_get" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  result = (faiss::ClusteringParameters *)& ((arg1)->cp);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_clustering_index_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Level1Quantizer_clustering_index_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_clustering_index_set" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Level1Quantizer_clustering_index_set" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  if (arg1) (arg1)->clustering_index = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_clustering_index_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_clustering_index_get" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  result = (faiss::Index *) ((arg1)->clustering_index);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_train_q1(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  bool arg4 ;
+  faiss::MetricType arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  bool val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Level1Quantizer_train_q1", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_train_q1" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Level1Quantizer_train_q1" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Level1Quantizer_train_q1" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_bool(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "Level1Quantizer_train_q1" "', argument " "4"" of type '" "bool""'");
+  } 
+  arg4 = static_cast< bool >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "Level1Quantizer_train_q1" "', argument " "5"" of type '" "faiss::MetricType""'");
+  } 
+  arg5 = static_cast< faiss::MetricType >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train_q1(arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_coarse_code_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_coarse_code_size" "', argument " "1"" of type '" "faiss::Level1Quantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::Level1Quantizer const *)arg1)->coarse_code_size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_encode_listno(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Level1Quantizer_encode_listno", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_encode_listno" "', argument " "1"" of type '" "faiss::Level1Quantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Level1Quantizer_encode_listno" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Level1Quantizer_encode_listno" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Level1Quantizer const *)arg1)->encode_listno(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Level1Quantizer_decode_listno(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::Index::idx_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Level1Quantizer_decode_listno", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Level1Quantizer_decode_listno" "', argument " "1"" of type '" "faiss::Level1Quantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Level1Quantizer_decode_listno" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index::idx_t)((faiss::Level1Quantizer const *)arg1)->decode_listno((uint8_t const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Level1Quantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  faiss::Level1Quantizer *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_Level1Quantizer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_Level1Quantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Level1Quantizer *)new faiss::Level1Quantizer(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Level1Quantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Level1Quantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Level1Quantizer *)new faiss::Level1Quantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Level1Quantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Level1Quantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_Level1Quantizer", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_Level1Quantizer__SWIG_1(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_Level1Quantizer__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_Level1Quantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::Level1Quantizer::Level1Quantizer(faiss::Index *,size_t)\n"
+    "    faiss::Level1Quantizer::Level1Quantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Level1Quantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Level1Quantizer *arg1 = (faiss::Level1Quantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Level1Quantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Level1Quantizer" "', argument " "1"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Level1Quantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Level1Quantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__Level1Quantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Level1Quantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IVFSearchParameters_nprobe_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFSearchParameters *arg1 = (faiss::IVFSearchParameters *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IVFSearchParameters_nprobe_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFSearchParameters_nprobe_set" "', argument " "1"" of type '" "faiss::IVFSearchParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFSearchParameters * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IVFSearchParameters_nprobe_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nprobe = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFSearchParameters_nprobe_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFSearchParameters *arg1 = (faiss::IVFSearchParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFSearchParameters_nprobe_get" "', argument " "1"" of type '" "faiss::IVFSearchParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFSearchParameters * >(argp1);
+  result = (size_t) ((arg1)->nprobe);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFSearchParameters_max_codes_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFSearchParameters *arg1 = (faiss::IVFSearchParameters *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IVFSearchParameters_max_codes_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFSearchParameters_max_codes_set" "', argument " "1"" of type '" "faiss::IVFSearchParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFSearchParameters * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IVFSearchParameters_max_codes_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->max_codes = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFSearchParameters_max_codes_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFSearchParameters *arg1 = (faiss::IVFSearchParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFSearchParameters_max_codes_get" "', argument " "1"" of type '" "faiss::IVFSearchParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFSearchParameters * >(argp1);
+  result = (size_t) ((arg1)->max_codes);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IVFSearchParameters(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFSearchParameters *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_IVFSearchParameters", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IVFSearchParameters *)new faiss::IVFSearchParameters();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IVFSearchParameters, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IVFSearchParameters(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFSearchParameters *arg1 = (faiss::IVFSearchParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFSearchParameters, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IVFSearchParameters" "', argument " "1"" of type '" "faiss::IVFSearchParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFSearchParameters * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IVFSearchParameters_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IVFSearchParameters, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IVFSearchParameters_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexIVF_invlists_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_invlists_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_invlists_set" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVF_invlists_set" "', argument " "2"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  if (arg1) (arg1)->invlists = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_invlists_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::InvertedLists *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_invlists_get" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  result = (faiss::InvertedLists *) ((arg1)->invlists);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_own_invlists_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_own_invlists_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_own_invlists_set" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_own_invlists_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_invlists = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_own_invlists_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_own_invlists_get" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  result = (bool) ((arg1)->own_invlists);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_code_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_code_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_code_size_set" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_code_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->code_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_code_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_code_size_get" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  result = (size_t) ((arg1)->code_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_nprobe_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_nprobe_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_nprobe_set" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_nprobe_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nprobe = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_nprobe_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_nprobe_get" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  result = (size_t) ((arg1)->nprobe);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_max_codes_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_max_codes_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_max_codes_set" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_max_codes_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->max_codes = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_max_codes_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_max_codes_get" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  result = (size_t) ((arg1)->max_codes);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_parallel_mode_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_parallel_mode_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_parallel_mode_set" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_parallel_mode_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->parallel_mode = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_parallel_mode_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_parallel_mode_get" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  result = (int) ((arg1)->parallel_mode);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_PARALLEL_MODE_NO_HEAP_INIT_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_PARALLEL_MODE_NO_HEAP_INIT_get" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  result = (int)(int) ((arg1)->PARALLEL_MODE_NO_HEAP_INIT);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_direct_map_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::DirectMap *arg2 = (faiss::DirectMap *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_direct_map_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_direct_map_set" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVF_direct_map_set" "', argument " "2"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DirectMap * >(argp2);
+  if (arg1) (arg1)->direct_map = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_direct_map_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DirectMap *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_direct_map_get" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  result = (faiss::DirectMap *)& ((arg1)->direct_map);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_reset" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_train" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_add" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_add_with_ids" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_add_with_ids" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_add_with_ids" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVF_add_with_ids" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_add_core(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_add_core", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_add_core" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_add_core" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_add_core" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVF_add_core" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVF_add_core" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_core(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,(faiss::Index::idx_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_encode_vectors__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  bool arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  bool val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVF_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVF_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  ecode6 = SWIG_AsVal_bool(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "IndexIVF_encode_vectors" "', argument " "6"" of type '" "bool""'");
+  } 
+  arg6 = static_cast< bool >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_encode_vectors__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVF_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVF_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_encode_vectors(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVF_encode_vectors", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_IndexIVF_encode_vectors__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              {
+                int res = SWIG_AsVal_bool(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_IndexIVF_encode_vectors__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVF_encode_vectors'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVF::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *,bool) const\n"
+    "    faiss::IndexIVF::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_add_sa_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_add_sa_codes", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_add_sa_codes" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_add_sa_codes" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_add_sa_codes" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVF_add_sa_codes" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_sa_codes(arg2,(uint8_t const *)arg3,(faiss::Index::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_train_residual(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_train_residual", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_train_residual" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_train_residual" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_train_residual" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train_residual(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_search_preassigned__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  float *arg7 = (float *) 0 ;
+  faiss::Index::idx_t *arg8 = (faiss::Index::idx_t *) 0 ;
+  bool arg9 ;
+  faiss::IVFSearchParameters *arg10 = (faiss::IVFSearchParameters *) 0 ;
+  faiss::IndexIVFStats *arg11 = (faiss::IndexIVFStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  bool val9 ;
+  int ecode9 = 0 ;
+  void *argp10 = 0 ;
+  int res10 = 0 ;
+  void *argp11 = 0 ;
+  int res11 = 0 ;
+  
+  if ((nobjs < 11) || (nobjs > 11)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_search_preassigned" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_search_preassigned" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_search_preassigned" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVF_search_preassigned" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVF_search_preassigned" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVF_search_preassigned" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVF_search_preassigned" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexIVF_search_preassigned" "', argument " "8"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::Index::idx_t * >(argp8);
+  ecode9 = SWIG_AsVal_bool(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "IndexIVF_search_preassigned" "', argument " "9"" of type '" "bool""'");
+  } 
+  arg9 = static_cast< bool >(val9);
+  res10 = SWIG_ConvertPtr(swig_obj[9], &argp10,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res10)) {
+    SWIG_exception_fail(SWIG_ArgError(res10), "in method '" "IndexIVF_search_preassigned" "', argument " "10"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg10 = reinterpret_cast< faiss::IVFSearchParameters * >(argp10);
+  res11 = SWIG_ConvertPtr(swig_obj[10], &argp11,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res11)) {
+    SWIG_exception_fail(SWIG_ArgError(res11), "in method '" "IndexIVF_search_preassigned" "', argument " "11"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg11 = reinterpret_cast< faiss::IndexIVFStats * >(argp11);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->search_preassigned(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5,(float const *)arg6,arg7,arg8,arg9,(faiss::IVFSearchParameters const *)arg10,arg11);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_search_preassigned__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  float *arg7 = (float *) 0 ;
+  faiss::Index::idx_t *arg8 = (faiss::Index::idx_t *) 0 ;
+  bool arg9 ;
+  faiss::IVFSearchParameters *arg10 = (faiss::IVFSearchParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  bool val9 ;
+  int ecode9 = 0 ;
+  void *argp10 = 0 ;
+  int res10 = 0 ;
+  
+  if ((nobjs < 10) || (nobjs > 10)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_search_preassigned" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_search_preassigned" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_search_preassigned" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVF_search_preassigned" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVF_search_preassigned" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVF_search_preassigned" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVF_search_preassigned" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexIVF_search_preassigned" "', argument " "8"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::Index::idx_t * >(argp8);
+  ecode9 = SWIG_AsVal_bool(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "IndexIVF_search_preassigned" "', argument " "9"" of type '" "bool""'");
+  } 
+  arg9 = static_cast< bool >(val9);
+  res10 = SWIG_ConvertPtr(swig_obj[9], &argp10,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res10)) {
+    SWIG_exception_fail(SWIG_ArgError(res10), "in method '" "IndexIVF_search_preassigned" "', argument " "10"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg10 = reinterpret_cast< faiss::IVFSearchParameters * >(argp10);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->search_preassigned(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5,(float const *)arg6,arg7,arg8,arg9,(faiss::IVFSearchParameters const *)arg10);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_search_preassigned__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  float *arg7 = (float *) 0 ;
+  faiss::Index::idx_t *arg8 = (faiss::Index::idx_t *) 0 ;
+  bool arg9 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  bool val9 ;
+  int ecode9 = 0 ;
+  
+  if ((nobjs < 9) || (nobjs > 9)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_search_preassigned" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_search_preassigned" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_search_preassigned" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVF_search_preassigned" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVF_search_preassigned" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVF_search_preassigned" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVF_search_preassigned" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexIVF_search_preassigned" "', argument " "8"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::Index::idx_t * >(argp8);
+  ecode9 = SWIG_AsVal_bool(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "IndexIVF_search_preassigned" "', argument " "9"" of type '" "bool""'");
+  } 
+  arg9 = static_cast< bool >(val9);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->search_preassigned(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5,(float const *)arg6,arg7,arg8,arg9);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_search_preassigned(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[12] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVF_search_preassigned", 0, 11, argv))) SWIG_fail;
+  --argc;
+  if (argc == 9) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_bool(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      return _wrap_IndexIVF_search_preassigned__SWIG_2(self, argc, argv);
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 10) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_bool(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      void *vptr = 0;
+                      int res = SWIG_ConvertPtr(argv[9], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+                      _v = SWIG_CheckState(res);
+                      if (_v) {
+                        return _wrap_IndexIVF_search_preassigned__SWIG_1(self, argc, argv);
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 11) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_bool(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      void *vptr = 0;
+                      int res = SWIG_ConvertPtr(argv[9], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+                      _v = SWIG_CheckState(res);
+                      if (_v) {
+                        void *vptr = 0;
+                        int res = SWIG_ConvertPtr(argv[10], &vptr, SWIGTYPE_p_faiss__IndexIVFStats, 0);
+                        _v = SWIG_CheckState(res);
+                        if (_v) {
+                          return _wrap_IndexIVF_search_preassigned__SWIG_0(self, argc, argv);
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVF_search_preassigned'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVF::search_preassigned(faiss::Index::idx_t,float const *,faiss::Index::idx_t,faiss::Index::idx_t const *,float const *,float *,faiss::Index::idx_t *,bool,faiss::IVFSearchParameters const *,faiss::IndexIVFStats *) const\n"
+    "    faiss::IndexIVF::search_preassigned(faiss::Index::idx_t,float const *,faiss::Index::idx_t,faiss::Index::idx_t const *,float const *,float *,faiss::Index::idx_t *,bool,faiss::IVFSearchParameters const *) const\n"
+    "    faiss::IndexIVF::search_preassigned(faiss::Index::idx_t,float const *,faiss::Index::idx_t,faiss::Index::idx_t const *,float const *,float *,faiss::Index::idx_t *,bool) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_search" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVF_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVF_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVF_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_range_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_range_search", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_range_search" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_range_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_range_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_float(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVF_range_search" "', argument " "4"" of type '" "float""'");
+  } 
+  arg4 = static_cast< float >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVF_range_search" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->range_search(arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_range_search_preassigned__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float arg4 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  faiss::RangeSearchResult *arg7 = (faiss::RangeSearchResult *) 0 ;
+  bool arg8 ;
+  faiss::IVFSearchParameters *arg9 = (faiss::IVFSearchParameters *) 0 ;
+  faiss::IndexIVFStats *arg10 = (faiss::IndexIVFStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  bool val8 ;
+  int ecode8 = 0 ;
+  void *argp9 = 0 ;
+  int res9 = 0 ;
+  void *argp10 = 0 ;
+  int res10 = 0 ;
+  
+  if ((nobjs < 10) || (nobjs > 10)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_range_search_preassigned" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_range_search_preassigned" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_range_search_preassigned" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_float(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVF_range_search_preassigned" "', argument " "4"" of type '" "float""'");
+  } 
+  arg4 = static_cast< float >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVF_range_search_preassigned" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVF_range_search_preassigned" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVF_range_search_preassigned" "', argument " "7"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::RangeSearchResult * >(argp7);
+  ecode8 = SWIG_AsVal_bool(swig_obj[7], &val8);
+  if (!SWIG_IsOK(ecode8)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode8), "in method '" "IndexIVF_range_search_preassigned" "', argument " "8"" of type '" "bool""'");
+  } 
+  arg8 = static_cast< bool >(val8);
+  res9 = SWIG_ConvertPtr(swig_obj[8], &argp9,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res9)) {
+    SWIG_exception_fail(SWIG_ArgError(res9), "in method '" "IndexIVF_range_search_preassigned" "', argument " "9"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg9 = reinterpret_cast< faiss::IVFSearchParameters * >(argp9);
+  res10 = SWIG_ConvertPtr(swig_obj[9], &argp10,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res10)) {
+    SWIG_exception_fail(SWIG_ArgError(res10), "in method '" "IndexIVF_range_search_preassigned" "', argument " "10"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg10 = reinterpret_cast< faiss::IndexIVFStats * >(argp10);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->range_search_preassigned(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5,(float const *)arg6,arg7,arg8,(faiss::IVFSearchParameters const *)arg9,arg10);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_range_search_preassigned__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float arg4 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  faiss::RangeSearchResult *arg7 = (faiss::RangeSearchResult *) 0 ;
+  bool arg8 ;
+  faiss::IVFSearchParameters *arg9 = (faiss::IVFSearchParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  bool val8 ;
+  int ecode8 = 0 ;
+  void *argp9 = 0 ;
+  int res9 = 0 ;
+  
+  if ((nobjs < 9) || (nobjs > 9)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_range_search_preassigned" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_range_search_preassigned" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_range_search_preassigned" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_float(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVF_range_search_preassigned" "', argument " "4"" of type '" "float""'");
+  } 
+  arg4 = static_cast< float >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVF_range_search_preassigned" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVF_range_search_preassigned" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVF_range_search_preassigned" "', argument " "7"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::RangeSearchResult * >(argp7);
+  ecode8 = SWIG_AsVal_bool(swig_obj[7], &val8);
+  if (!SWIG_IsOK(ecode8)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode8), "in method '" "IndexIVF_range_search_preassigned" "', argument " "8"" of type '" "bool""'");
+  } 
+  arg8 = static_cast< bool >(val8);
+  res9 = SWIG_ConvertPtr(swig_obj[8], &argp9,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res9)) {
+    SWIG_exception_fail(SWIG_ArgError(res9), "in method '" "IndexIVF_range_search_preassigned" "', argument " "9"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg9 = reinterpret_cast< faiss::IVFSearchParameters * >(argp9);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->range_search_preassigned(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5,(float const *)arg6,arg7,arg8,(faiss::IVFSearchParameters const *)arg9);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_range_search_preassigned__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float arg4 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  faiss::RangeSearchResult *arg7 = (faiss::RangeSearchResult *) 0 ;
+  bool arg8 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  bool val8 ;
+  int ecode8 = 0 ;
+  
+  if ((nobjs < 8) || (nobjs > 8)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_range_search_preassigned" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_range_search_preassigned" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_range_search_preassigned" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_float(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVF_range_search_preassigned" "', argument " "4"" of type '" "float""'");
+  } 
+  arg4 = static_cast< float >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVF_range_search_preassigned" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVF_range_search_preassigned" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVF_range_search_preassigned" "', argument " "7"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::RangeSearchResult * >(argp7);
+  ecode8 = SWIG_AsVal_bool(swig_obj[7], &val8);
+  if (!SWIG_IsOK(ecode8)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode8), "in method '" "IndexIVF_range_search_preassigned" "', argument " "8"" of type '" "bool""'");
+  } 
+  arg8 = static_cast< bool >(val8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->range_search_preassigned(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5,(float const *)arg6,arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_range_search_preassigned__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float arg4 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  faiss::RangeSearchResult *arg7 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_range_search_preassigned" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_range_search_preassigned" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_range_search_preassigned" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_float(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVF_range_search_preassigned" "', argument " "4"" of type '" "float""'");
+  } 
+  arg4 = static_cast< float >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVF_range_search_preassigned" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVF_range_search_preassigned" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVF_range_search_preassigned" "', argument " "7"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::RangeSearchResult * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->range_search_preassigned(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5,(float const *)arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_range_search_preassigned(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[11] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVF_range_search_preassigned", 0, 10, argv))) SWIG_fail;
+  --argc;
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_float(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_faiss__RangeSearchResult, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  return _wrap_IndexIVF_range_search_preassigned__SWIG_3(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 8) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_float(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_faiss__RangeSearchResult, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  {
+                    int res = SWIG_AsVal_bool(argv[7], NULL);
+                    _v = SWIG_CheckState(res);
+                  }
+                  if (_v) {
+                    return _wrap_IndexIVF_range_search_preassigned__SWIG_2(self, argc, argv);
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 9) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_float(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_faiss__RangeSearchResult, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  {
+                    int res = SWIG_AsVal_bool(argv[7], NULL);
+                    _v = SWIG_CheckState(res);
+                  }
+                  if (_v) {
+                    void *vptr = 0;
+                    int res = SWIG_ConvertPtr(argv[8], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+                    _v = SWIG_CheckState(res);
+                    if (_v) {
+                      return _wrap_IndexIVF_range_search_preassigned__SWIG_1(self, argc, argv);
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 10) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_float(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_faiss__RangeSearchResult, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  {
+                    int res = SWIG_AsVal_bool(argv[7], NULL);
+                    _v = SWIG_CheckState(res);
+                  }
+                  if (_v) {
+                    void *vptr = 0;
+                    int res = SWIG_ConvertPtr(argv[8], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+                    _v = SWIG_CheckState(res);
+                    if (_v) {
+                      void *vptr = 0;
+                      int res = SWIG_ConvertPtr(argv[9], &vptr, SWIGTYPE_p_faiss__IndexIVFStats, 0);
+                      _v = SWIG_CheckState(res);
+                      if (_v) {
+                        return _wrap_IndexIVF_range_search_preassigned__SWIG_0(self, argc, argv);
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVF_range_search_preassigned'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVF::range_search_preassigned(faiss::Index::idx_t,float const *,float,faiss::Index::idx_t const *,float const *,faiss::RangeSearchResult *,bool,faiss::IVFSearchParameters const *,faiss::IndexIVFStats *) const\n"
+    "    faiss::IndexIVF::range_search_preassigned(faiss::Index::idx_t,float const *,float,faiss::Index::idx_t const *,float const *,faiss::RangeSearchResult *,bool,faiss::IVFSearchParameters const *) const\n"
+    "    faiss::IndexIVF::range_search_preassigned(faiss::Index::idx_t,float const *,float,faiss::Index::idx_t const *,float const *,faiss::RangeSearchResult *,bool) const\n"
+    "    faiss::IndexIVF::range_search_preassigned(faiss::Index::idx_t,float const *,float,faiss::Index::idx_t const *,float const *,faiss::RangeSearchResult *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_get_InvertedListScanner__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::InvertedListScanner *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_get_InvertedListScanner" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_get_InvertedListScanner" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedListScanner *)((faiss::IndexIVF const *)arg1)->get_InvertedListScanner(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedListScanner, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_get_InvertedListScanner__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::InvertedListScanner *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_get_InvertedListScanner" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedListScanner *)((faiss::IndexIVF const *)arg1)->get_InvertedListScanner();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedListScanner, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_get_InvertedListScanner(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVF_get_InvertedListScanner", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_IndexIVF_get_InvertedListScanner__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_IndexIVF_get_InvertedListScanner__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVF_get_InvertedListScanner'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVF::get_InvertedListScanner(bool) const\n"
+    "    faiss::IndexIVF::get_InvertedListScanner() const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_reconstruct" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_reconstruct" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_update_vectors(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  int arg2 ;
+  faiss::Index::idx_t *arg3 = (faiss::Index::idx_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_update_vectors", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_update_vectors" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_update_vectors" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_update_vectors" "', argument " "3"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::Index::idx_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVF_update_vectors" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->update_vectors(arg2,(faiss::Index::idx_t const *)arg3,(float const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_reconstruct_n(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  faiss::Index::idx_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_reconstruct_n", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_reconstruct_n" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_reconstruct_n" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexIVF_reconstruct_n" "', argument " "3"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::Index::idx_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVF_reconstruct_n" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->reconstruct_n(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_search_and_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  float *arg7 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_search_and_reconstruct", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_search_and_reconstruct" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_search_and_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_search_and_reconstruct" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVF_search_and_reconstruct" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVF_search_and_reconstruct" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVF_search_and_reconstruct" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVF_search_and_reconstruct" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->search_and_reconstruct(arg2,(float const *)arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_reconstruct_from_offset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  int64_t arg2 ;
+  int64_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_reconstruct_from_offset", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_reconstruct_from_offset" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_reconstruct_from_offset" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexIVF_reconstruct_from_offset" "', argument " "3"" of type '" "int64_t""'");
+  } 
+  arg3 = static_cast< int64_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVF_reconstruct_from_offset" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->reconstruct_from_offset(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_remove_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_remove_ids" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVF_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIVF_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_check_compatible_for_merge(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::IndexIVF *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_check_compatible_for_merge", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_check_compatible_for_merge" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IndexIVF,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVF_check_compatible_for_merge" "', argument " "2"" of type '" "faiss::IndexIVF const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIVF_check_compatible_for_merge" "', argument " "2"" of type '" "faiss::IndexIVF const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVF * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->check_compatible_for_merge((faiss::IndexIVF const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_merge_from(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::IndexIVF *arg2 = 0 ;
+  faiss::Index::idx_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_merge_from", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_merge_from" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IndexIVF,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVF_merge_from" "', argument " "2"" of type '" "faiss::IndexIVF &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIVF_merge_from" "', argument " "2"" of type '" "faiss::IndexIVF &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVF * >(argp2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexIVF_merge_from" "', argument " "3"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::Index::idx_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->merge_from(*arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_copy_subset_to(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::IndexIVF *arg2 = 0 ;
+  int arg3 ;
+  faiss::Index::idx_t arg4 ;
+  faiss::Index::idx_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_copy_subset_to", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_copy_subset_to" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IndexIVF,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVF_copy_subset_to" "', argument " "2"" of type '" "faiss::IndexIVF &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIVF_copy_subset_to" "', argument " "2"" of type '" "faiss::IndexIVF &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVF * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexIVF_copy_subset_to" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVF_copy_subset_to" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "IndexIVF_copy_subset_to" "', argument " "5"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg5 = static_cast< faiss::Index::idx_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->copy_subset_to(*arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIVF(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIVF" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_get_list_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_get_list_size", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_get_list_size" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_get_list_size" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::IndexIVF const *)arg1)->get_list_size(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_make_direct_map__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_make_direct_map" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_make_direct_map" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->make_direct_map(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_make_direct_map__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_make_direct_map" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->make_direct_map();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_make_direct_map(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVF_make_direct_map", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_IndexIVF_make_direct_map__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_IndexIVF_make_direct_map__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVF_make_direct_map'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVF::make_direct_map(bool)\n"
+    "    faiss::IndexIVF::make_direct_map()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_set_direct_map_type(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::DirectMap::Type arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_set_direct_map_type", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_set_direct_map_type" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_set_direct_map_type" "', argument " "2"" of type '" "faiss::DirectMap::Type""'");
+  } 
+  arg2 = static_cast< faiss::DirectMap::Type >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_direct_map_type(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_replace_invlists__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  bool arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_replace_invlists" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVF_replace_invlists" "', argument " "2"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexIVF_replace_invlists" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->replace_invlists(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_replace_invlists__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_replace_invlists" "', argument " "1"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVF_replace_invlists" "', argument " "2"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->replace_invlists(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_replace_invlists(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVF_replace_invlists", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__InvertedLists, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_IndexIVF_replace_invlists__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__InvertedLists, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_IndexIVF_replace_invlists__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVF_replace_invlists'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVF::replace_invlists(faiss::InvertedLists *,bool)\n"
+    "    faiss::IndexIVF::replace_invlists(faiss::InvertedLists *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_sa_code_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_sa_code_size" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::IndexIVF const *)arg1)->sa_code_size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVF_sa_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVF *arg1 = (faiss::IndexIVF *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVF_sa_encode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVF_sa_encode" "', argument " "1"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVF_sa_encode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVF_sa_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVF_sa_encode" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVF const *)arg1)->sa_encode(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexIVF_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIVF, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_nq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFStats_nq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_nq_set" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFStats_nq_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nq = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_nq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_nq_get" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  result = (size_t) ((arg1)->nq);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_nlist_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFStats_nlist_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_nlist_set" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFStats_nlist_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nlist = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_nlist_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_nlist_get" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  result = (size_t) ((arg1)->nlist);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_ndis_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFStats_ndis_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_ndis_set" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFStats_ndis_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->ndis = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_ndis_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_ndis_get" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  result = (size_t) ((arg1)->ndis);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_nheap_updates_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFStats_nheap_updates_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_nheap_updates_set" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFStats_nheap_updates_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nheap_updates = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_nheap_updates_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_nheap_updates_get" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  result = (size_t) ((arg1)->nheap_updates);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_quantization_time_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFStats_quantization_time_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_quantization_time_set" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFStats_quantization_time_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->quantization_time = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_quantization_time_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_quantization_time_get" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  result = (double) ((arg1)->quantization_time);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_search_time_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFStats_search_time_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_search_time_set" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFStats_search_time_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->search_time = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_search_time_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_search_time_get" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  result = (double) ((arg1)->search_time);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_IndexIVFStats", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFStats *)new faiss::IndexIVFStats();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_reset" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFStats_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  faiss::IndexIVFStats *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFStats_add", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFStats_add" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IndexIVFStats,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFStats_add" "', argument " "2"" of type '" "faiss::IndexIVFStats const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIVFStats_add" "', argument " "2"" of type '" "faiss::IndexIVFStats const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFStats * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add((faiss::IndexIVFStats const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIVFStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFStats *arg1 = (faiss::IndexIVFStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFStats, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIVFStats" "', argument " "1"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFStats * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexIVFStats_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIVFStats, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIVFStats_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN int Swig_var_indexIVF_stats_set(PyObject *_val) {
+  {
+    void *argp = 0;
+    int res = SWIG_ConvertPtr(_val, &argp, SWIGTYPE_p_faiss__IndexIVFStats,  0  | 0);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::indexIVF_stats""' of type '""faiss::IndexIVFStats""'");
+    }
+    if (!argp) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in variable '""faiss::indexIVF_stats""' of type '""faiss::IndexIVFStats""'");
+    } else {
+      faiss::IndexIVFStats * temp;
+      temp  = reinterpret_cast< faiss::IndexIVFStats * >(argp);
+      faiss::indexIVF_stats = *temp;
+      if (SWIG_IsNewObj(res)) delete temp;
+    }
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_indexIVF_stats_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_NewPointerObj(SWIG_as_voidptr(&faiss::indexIVF_stats), SWIGTYPE_p_faiss__IndexIVFStats,  0 );
+  return pyobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_check_compatible_for_merge(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "check_compatible_for_merge", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "check_compatible_for_merge" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "check_compatible_for_merge" "', argument " "2"" of type '" "faiss::Index const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::ivflib::check_compatible_for_merge((faiss::Index const *)arg1,(faiss::Index const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_extract_index_ivf__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexIVF *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "extract_index_ivf" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVF *)faiss::ivflib::extract_index_ivf((faiss::Index const *)arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_extract_index_ivf__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexIVF *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "extract_index_ivf" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVF *)faiss::ivflib::extract_index_ivf(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_extract_index_ivf(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "extract_index_ivf", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_extract_index_ivf__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_extract_index_ivf__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'extract_index_ivf'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ivflib::extract_index_ivf(faiss::Index const *)\n"
+    "    faiss::ivflib::extract_index_ivf(faiss::Index *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_try_extract_index_ivf__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexIVF *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "try_extract_index_ivf" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVF *)faiss::ivflib::try_extract_index_ivf((faiss::Index const *)arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_try_extract_index_ivf__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexIVF *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "try_extract_index_ivf" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVF *)faiss::ivflib::try_extract_index_ivf(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_try_extract_index_ivf(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "try_extract_index_ivf", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_try_extract_index_ivf__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_try_extract_index_ivf__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'try_extract_index_ivf'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ivflib::try_extract_index_ivf(faiss::Index const *)\n"
+    "    faiss::ivflib::try_extract_index_ivf(faiss::Index *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_merge_into(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  bool arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "merge_into", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "merge_into" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "merge_into" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "merge_into" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::ivflib::merge_into(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_search_centroid(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  float *arg2 = (float *) 0 ;
+  int arg3 ;
+  faiss::ivflib::idx_t *arg4 = (faiss::ivflib::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "search_centroid", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "search_centroid" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "search_centroid" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "search_centroid" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "search_centroid" "', argument " "4"" of type '" "faiss::ivflib::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::ivflib::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::ivflib::search_centroid(arg1,(float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_search_and_return_centroids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  long arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::ivflib::idx_t *arg6 = (faiss::ivflib::idx_t *) 0 ;
+  faiss::ivflib::idx_t *arg7 = (faiss::ivflib::idx_t *) 0 ;
+  faiss::ivflib::idx_t *arg8 = (faiss::ivflib::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  PyObject *swig_obj[8] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "search_and_return_centroids", 8, 8, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "search_and_return_centroids" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "search_and_return_centroids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "search_and_return_centroids" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "search_and_return_centroids" "', argument " "4"" of type '" "long""'");
+  } 
+  arg4 = static_cast< long >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "search_and_return_centroids" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "search_and_return_centroids" "', argument " "6"" of type '" "faiss::ivflib::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::ivflib::idx_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "search_and_return_centroids" "', argument " "7"" of type '" "faiss::ivflib::idx_t *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::ivflib::idx_t * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "search_and_return_centroids" "', argument " "8"" of type '" "faiss::ivflib::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::ivflib::idx_t * >(argp8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::ivflib::search_and_return_centroids(arg1,arg2,(float const *)arg3,arg4,arg5,arg6,arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SlidingIndexWindow_index_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ivflib::SlidingIndexWindow *arg1 = (faiss::ivflib::SlidingIndexWindow *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SlidingIndexWindow_index_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SlidingIndexWindow_index_set" "', argument " "1"" of type '" "faiss::ivflib::SlidingIndexWindow *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ivflib::SlidingIndexWindow * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SlidingIndexWindow_index_set" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  if (arg1) (arg1)->index = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SlidingIndexWindow_index_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ivflib::SlidingIndexWindow *arg1 = (faiss::ivflib::SlidingIndexWindow *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SlidingIndexWindow_index_get" "', argument " "1"" of type '" "faiss::ivflib::SlidingIndexWindow *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ivflib::SlidingIndexWindow * >(argp1);
+  result = (faiss::Index *) ((arg1)->index);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SlidingIndexWindow_ils_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ivflib::SlidingIndexWindow *arg1 = (faiss::ivflib::SlidingIndexWindow *) 0 ;
+  faiss::ArrayInvertedLists *arg2 = (faiss::ArrayInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SlidingIndexWindow_ils_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SlidingIndexWindow_ils_set" "', argument " "1"" of type '" "faiss::ivflib::SlidingIndexWindow *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ivflib::SlidingIndexWindow * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ArrayInvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SlidingIndexWindow_ils_set" "', argument " "2"" of type '" "faiss::ArrayInvertedLists *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ArrayInvertedLists * >(argp2);
+  if (arg1) (arg1)->ils = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SlidingIndexWindow_ils_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ivflib::SlidingIndexWindow *arg1 = (faiss::ivflib::SlidingIndexWindow *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ArrayInvertedLists *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SlidingIndexWindow_ils_get" "', argument " "1"" of type '" "faiss::ivflib::SlidingIndexWindow *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ivflib::SlidingIndexWindow * >(argp1);
+  result = (faiss::ArrayInvertedLists *) ((arg1)->ils);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ArrayInvertedLists, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SlidingIndexWindow_n_slice_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ivflib::SlidingIndexWindow *arg1 = (faiss::ivflib::SlidingIndexWindow *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SlidingIndexWindow_n_slice_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SlidingIndexWindow_n_slice_set" "', argument " "1"" of type '" "faiss::ivflib::SlidingIndexWindow *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ivflib::SlidingIndexWindow * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SlidingIndexWindow_n_slice_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->n_slice = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SlidingIndexWindow_n_slice_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ivflib::SlidingIndexWindow *arg1 = (faiss::ivflib::SlidingIndexWindow *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SlidingIndexWindow_n_slice_get" "', argument " "1"" of type '" "faiss::ivflib::SlidingIndexWindow *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ivflib::SlidingIndexWindow * >(argp1);
+  result = (int) ((arg1)->n_slice);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SlidingIndexWindow_nlist_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ivflib::SlidingIndexWindow *arg1 = (faiss::ivflib::SlidingIndexWindow *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SlidingIndexWindow_nlist_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SlidingIndexWindow_nlist_set" "', argument " "1"" of type '" "faiss::ivflib::SlidingIndexWindow *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ivflib::SlidingIndexWindow * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "SlidingIndexWindow_nlist_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nlist = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SlidingIndexWindow_nlist_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ivflib::SlidingIndexWindow *arg1 = (faiss::ivflib::SlidingIndexWindow *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SlidingIndexWindow_nlist_get" "', argument " "1"" of type '" "faiss::ivflib::SlidingIndexWindow *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ivflib::SlidingIndexWindow * >(argp1);
+  result = (size_t) ((arg1)->nlist);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SlidingIndexWindow_sizes_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ivflib::SlidingIndexWindow *arg1 = (faiss::ivflib::SlidingIndexWindow *) 0 ;
+  std::vector< std::vector< size_t > > *arg2 = (std::vector< std::vector< size_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SlidingIndexWindow_sizes_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SlidingIndexWindow_sizes_set" "', argument " "1"" of type '" "faiss::ivflib::SlidingIndexWindow *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ivflib::SlidingIndexWindow * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_std__vectorT_uint64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SlidingIndexWindow_sizes_set" "', argument " "2"" of type '" "std::vector< std::vector< size_t > > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< std::vector< size_t > > * >(argp2);
+  if (arg1) (arg1)->sizes = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SlidingIndexWindow_sizes_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ivflib::SlidingIndexWindow *arg1 = (faiss::ivflib::SlidingIndexWindow *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< std::vector< size_t > > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SlidingIndexWindow_sizes_get" "', argument " "1"" of type '" "faiss::ivflib::SlidingIndexWindow *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ivflib::SlidingIndexWindow * >(argp1);
+  result = (std::vector< std::vector< size_t > > *)& ((arg1)->sizes);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_std__vectorT_uint64_t_t_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_SlidingIndexWindow(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ivflib::SlidingIndexWindow *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_SlidingIndexWindow" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ivflib::SlidingIndexWindow *)new faiss::ivflib::SlidingIndexWindow(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_SlidingIndexWindow_step(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ivflib::SlidingIndexWindow *arg1 = (faiss::ivflib::SlidingIndexWindow *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  bool arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "SlidingIndexWindow_step", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "SlidingIndexWindow_step" "', argument " "1"" of type '" "faiss::ivflib::SlidingIndexWindow *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ivflib::SlidingIndexWindow * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "SlidingIndexWindow_step" "', argument " "2"" of type '" "faiss::Index const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "SlidingIndexWindow_step" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->step((faiss::Index const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_SlidingIndexWindow(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ivflib::SlidingIndexWindow *arg1 = (faiss::ivflib::SlidingIndexWindow *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_SlidingIndexWindow" "', argument " "1"" of type '" "faiss::ivflib::SlidingIndexWindow *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ivflib::SlidingIndexWindow * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *SlidingIndexWindow_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ivflib__SlidingIndexWindow, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *SlidingIndexWindow_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_get_invlist_range(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  long arg2 ;
+  long arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::ArrayInvertedLists *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "get_invlist_range", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "get_invlist_range" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "get_invlist_range" "', argument " "2"" of type '" "long""'");
+  } 
+  arg2 = static_cast< long >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "get_invlist_range" "', argument " "3"" of type '" "long""'");
+  } 
+  arg3 = static_cast< long >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ArrayInvertedLists *)faiss::ivflib::get_invlist_range((faiss::Index const *)arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ArrayInvertedLists, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_set_invlist_range(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  long arg2 ;
+  long arg3 ;
+  faiss::ArrayInvertedLists *arg4 = (faiss::ArrayInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "set_invlist_range", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "set_invlist_range" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "set_invlist_range" "', argument " "2"" of type '" "long""'");
+  } 
+  arg2 = static_cast< long >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "set_invlist_range" "', argument " "3"" of type '" "long""'");
+  } 
+  arg3 = static_cast< long >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_faiss__ArrayInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "set_invlist_range" "', argument " "4"" of type '" "faiss::ArrayInvertedLists *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::ArrayInvertedLists * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::ivflib::set_invlist_range(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_search_with_parameters__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::ivflib::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::ivflib::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::ivflib::idx_t *arg6 = (faiss::ivflib::idx_t *) 0 ;
+  faiss::IVFSearchParameters *arg7 = (faiss::IVFSearchParameters *) 0 ;
+  size_t *arg8 = (size_t *) 0 ;
+  double *arg9 = (double *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  void *argp9 = 0 ;
+  int res9 = 0 ;
+  
+  if ((nobjs < 9) || (nobjs > 9)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "search_with_parameters" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "search_with_parameters" "', argument " "2"" of type '" "faiss::ivflib::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::ivflib::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "search_with_parameters" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "search_with_parameters" "', argument " "4"" of type '" "faiss::ivflib::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::ivflib::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "search_with_parameters" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "search_with_parameters" "', argument " "6"" of type '" "faiss::ivflib::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::ivflib::idx_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "search_with_parameters" "', argument " "7"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::IVFSearchParameters * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "search_with_parameters" "', argument " "8"" of type '" "size_t *""'"); 
+  }
+  arg8 = reinterpret_cast< size_t * >(argp8);
+  res9 = SWIG_ConvertPtr(swig_obj[8], &argp9,SWIGTYPE_p_double, 0 |  0 );
+  if (!SWIG_IsOK(res9)) {
+    SWIG_exception_fail(SWIG_ArgError(res9), "in method '" "search_with_parameters" "', argument " "9"" of type '" "double *""'"); 
+  }
+  arg9 = reinterpret_cast< double * >(argp9);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::ivflib::search_with_parameters((faiss::Index const *)arg1,arg2,(float const *)arg3,arg4,arg5,arg6,(faiss::IVFSearchParameters const *)arg7,arg8,arg9);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_search_with_parameters__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::ivflib::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::ivflib::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::ivflib::idx_t *arg6 = (faiss::ivflib::idx_t *) 0 ;
+  faiss::IVFSearchParameters *arg7 = (faiss::IVFSearchParameters *) 0 ;
+  size_t *arg8 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  
+  if ((nobjs < 8) || (nobjs > 8)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "search_with_parameters" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "search_with_parameters" "', argument " "2"" of type '" "faiss::ivflib::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::ivflib::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "search_with_parameters" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "search_with_parameters" "', argument " "4"" of type '" "faiss::ivflib::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::ivflib::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "search_with_parameters" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "search_with_parameters" "', argument " "6"" of type '" "faiss::ivflib::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::ivflib::idx_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "search_with_parameters" "', argument " "7"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::IVFSearchParameters * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "search_with_parameters" "', argument " "8"" of type '" "size_t *""'"); 
+  }
+  arg8 = reinterpret_cast< size_t * >(argp8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::ivflib::search_with_parameters((faiss::Index const *)arg1,arg2,(float const *)arg3,arg4,arg5,arg6,(faiss::IVFSearchParameters const *)arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_search_with_parameters__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::ivflib::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::ivflib::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::ivflib::idx_t *arg6 = (faiss::ivflib::idx_t *) 0 ;
+  faiss::IVFSearchParameters *arg7 = (faiss::IVFSearchParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "search_with_parameters" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "search_with_parameters" "', argument " "2"" of type '" "faiss::ivflib::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::ivflib::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "search_with_parameters" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "search_with_parameters" "', argument " "4"" of type '" "faiss::ivflib::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::ivflib::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "search_with_parameters" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "search_with_parameters" "', argument " "6"" of type '" "faiss::ivflib::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::ivflib::idx_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "search_with_parameters" "', argument " "7"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::IVFSearchParameters * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::ivflib::search_with_parameters((faiss::Index const *)arg1,arg2,(float const *)arg3,arg4,arg5,arg6,(faiss::IVFSearchParameters const *)arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_search_with_parameters(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[10] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "search_with_parameters", 0, 9, argv))) SWIG_fail;
+  --argc;
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_long, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  return _wrap_search_with_parameters__SWIG_2(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 8) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_long, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_unsigned_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    return _wrap_search_with_parameters__SWIG_1(self, argc, argv);
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 9) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_long, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_unsigned_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    void *vptr = 0;
+                    int res = SWIG_ConvertPtr(argv[8], &vptr, SWIGTYPE_p_double, 0);
+                    _v = SWIG_CheckState(res);
+                    if (_v) {
+                      return _wrap_search_with_parameters__SWIG_0(self, argc, argv);
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'search_with_parameters'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ivflib::search_with_parameters(faiss::Index const *,faiss::ivflib::idx_t,float const *,faiss::ivflib::idx_t,float *,faiss::ivflib::idx_t *,faiss::IVFSearchParameters const *,size_t *,double *)\n"
+    "    faiss::ivflib::search_with_parameters(faiss::Index const *,faiss::ivflib::idx_t,float const *,faiss::ivflib::idx_t,float *,faiss::ivflib::idx_t *,faiss::IVFSearchParameters const *,size_t *)\n"
+    "    faiss::ivflib::search_with_parameters(faiss::Index const *,faiss::ivflib::idx_t,float const *,faiss::ivflib::idx_t,float *,faiss::ivflib::idx_t *,faiss::IVFSearchParameters const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_range_search_with_parameters__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::ivflib::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  faiss::IVFSearchParameters *arg6 = (faiss::IVFSearchParameters *) 0 ;
+  size_t *arg7 = (size_t *) 0 ;
+  double *arg8 = (double *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  
+  if ((nobjs < 8) || (nobjs > 8)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "range_search_with_parameters" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "range_search_with_parameters" "', argument " "2"" of type '" "faiss::ivflib::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::ivflib::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "range_search_with_parameters" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_float(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "range_search_with_parameters" "', argument " "4"" of type '" "float""'");
+  } 
+  arg4 = static_cast< float >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "range_search_with_parameters" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "range_search_with_parameters" "', argument " "6"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IVFSearchParameters * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "range_search_with_parameters" "', argument " "7"" of type '" "size_t *""'"); 
+  }
+  arg7 = reinterpret_cast< size_t * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_double, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "range_search_with_parameters" "', argument " "8"" of type '" "double *""'"); 
+  }
+  arg8 = reinterpret_cast< double * >(argp8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::ivflib::range_search_with_parameters((faiss::Index const *)arg1,arg2,(float const *)arg3,arg4,arg5,(faiss::IVFSearchParameters const *)arg6,arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_range_search_with_parameters__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::ivflib::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  faiss::IVFSearchParameters *arg6 = (faiss::IVFSearchParameters *) 0 ;
+  size_t *arg7 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "range_search_with_parameters" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "range_search_with_parameters" "', argument " "2"" of type '" "faiss::ivflib::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::ivflib::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "range_search_with_parameters" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_float(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "range_search_with_parameters" "', argument " "4"" of type '" "float""'");
+  } 
+  arg4 = static_cast< float >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "range_search_with_parameters" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "range_search_with_parameters" "', argument " "6"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IVFSearchParameters * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "range_search_with_parameters" "', argument " "7"" of type '" "size_t *""'"); 
+  }
+  arg7 = reinterpret_cast< size_t * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::ivflib::range_search_with_parameters((faiss::Index const *)arg1,arg2,(float const *)arg3,arg4,arg5,(faiss::IVFSearchParameters const *)arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_range_search_with_parameters__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::ivflib::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  faiss::IVFSearchParameters *arg6 = (faiss::IVFSearchParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "range_search_with_parameters" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "range_search_with_parameters" "', argument " "2"" of type '" "faiss::ivflib::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::ivflib::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "range_search_with_parameters" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_float(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "range_search_with_parameters" "', argument " "4"" of type '" "float""'");
+  } 
+  arg4 = static_cast< float >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "range_search_with_parameters" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "range_search_with_parameters" "', argument " "6"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IVFSearchParameters * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::ivflib::range_search_with_parameters((faiss::Index const *)arg1,arg2,(float const *)arg3,arg4,arg5,(faiss::IVFSearchParameters const *)arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_range_search_with_parameters(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[9] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "range_search_with_parameters", 0, 8, argv))) SWIG_fail;
+  --argc;
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_float(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_faiss__RangeSearchResult, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_range_search_with_parameters__SWIG_2(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_float(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_faiss__RangeSearchResult, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_unsigned_long, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  return _wrap_range_search_with_parameters__SWIG_1(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 8) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_float(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_faiss__RangeSearchResult, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_unsigned_long, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_double, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    return _wrap_range_search_with_parameters__SWIG_0(self, argc, argv);
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'range_search_with_parameters'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ivflib::range_search_with_parameters(faiss::Index const *,faiss::ivflib::idx_t,float const *,float,faiss::RangeSearchResult *,faiss::IVFSearchParameters const *,size_t *,double *)\n"
+    "    faiss::ivflib::range_search_with_parameters(faiss::Index const *,faiss::ivflib::idx_t,float const *,float,faiss::RangeSearchResult *,faiss::IVFSearchParameters const *,size_t *)\n"
+    "    faiss::ivflib::range_search_with_parameters(faiss::Index const *,faiss::ivflib::idx_t,float const *,float,faiss::RangeSearchResult *,faiss::IVFSearchParameters const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_qtype_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  faiss::ScalarQuantizer::QuantizerType arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ScalarQuantizer_qtype_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_qtype_set" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ScalarQuantizer_qtype_set" "', argument " "2"" of type '" "faiss::ScalarQuantizer::QuantizerType""'");
+  } 
+  arg2 = static_cast< faiss::ScalarQuantizer::QuantizerType >(val2);
+  if (arg1) (arg1)->qtype = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_qtype_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ScalarQuantizer::QuantizerType result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_qtype_get" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  result = (faiss::ScalarQuantizer::QuantizerType) ((arg1)->qtype);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_rangestat_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  faiss::ScalarQuantizer::RangeStat arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ScalarQuantizer_rangestat_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_rangestat_set" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ScalarQuantizer_rangestat_set" "', argument " "2"" of type '" "faiss::ScalarQuantizer::RangeStat""'");
+  } 
+  arg2 = static_cast< faiss::ScalarQuantizer::RangeStat >(val2);
+  if (arg1) (arg1)->rangestat = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_rangestat_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ScalarQuantizer::RangeStat result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_rangestat_get" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  result = (faiss::ScalarQuantizer::RangeStat) ((arg1)->rangestat);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_rangestat_arg_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ScalarQuantizer_rangestat_arg_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_rangestat_arg_set" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ScalarQuantizer_rangestat_arg_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->rangestat_arg = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_rangestat_arg_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_rangestat_arg_get" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  result = (float) ((arg1)->rangestat_arg);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_d_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ScalarQuantizer_d_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_d_set" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ScalarQuantizer_d_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->d = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_d_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_d_get" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  result = (size_t) ((arg1)->d);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_bits_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ScalarQuantizer_bits_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_bits_set" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ScalarQuantizer_bits_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->bits = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_bits_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_bits_get" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  result = (size_t) ((arg1)->bits);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_code_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ScalarQuantizer_code_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_code_size_set" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ScalarQuantizer_code_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->code_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_code_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_code_size_get" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  result = (size_t) ((arg1)->code_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_trained_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ScalarQuantizer_trained_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_trained_set" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ScalarQuantizer_trained_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->trained = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_trained_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_trained_get" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->trained);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ScalarQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  faiss::ScalarQuantizer::QuantizerType arg2 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::ScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ScalarQuantizer" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ScalarQuantizer" "', argument " "2"" of type '" "faiss::ScalarQuantizer::QuantizerType""'");
+  } 
+  arg2 = static_cast< faiss::ScalarQuantizer::QuantizerType >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ScalarQuantizer *)new faiss::ScalarQuantizer(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ScalarQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ScalarQuantizer *)new faiss::ScalarQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ScalarQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_ScalarQuantizer", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_ScalarQuantizer__SWIG_1(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_ScalarQuantizer__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_ScalarQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ScalarQuantizer::ScalarQuantizer(size_t,faiss::ScalarQuantizer::QuantizerType)\n"
+    "    faiss::ScalarQuantizer::ScalarQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_set_derived_sizes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_set_derived_sizes" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_derived_sizes();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ScalarQuantizer_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_train" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ScalarQuantizer_train" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ScalarQuantizer_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_train_residual(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index *arg4 = (faiss::Index *) 0 ;
+  bool arg5 ;
+  bool arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  bool val5 ;
+  int ecode5 = 0 ;
+  bool val6 ;
+  int ecode6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ScalarQuantizer_train_residual", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_train_residual" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ScalarQuantizer_train_residual" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ScalarQuantizer_train_residual" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ScalarQuantizer_train_residual" "', argument " "4"" of type '" "faiss::Index *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index * >(argp4);
+  ecode5 = SWIG_AsVal_bool(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ScalarQuantizer_train_residual" "', argument " "5"" of type '" "bool""'");
+  } 
+  arg5 = static_cast< bool >(val5);
+  ecode6 = SWIG_AsVal_bool(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "ScalarQuantizer_train_residual" "', argument " "6"" of type '" "bool""'");
+  } 
+  arg6 = static_cast< bool >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train_residual(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_compute_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ScalarQuantizer_compute_codes", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_compute_codes" "', argument " "1"" of type '" "faiss::ScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ScalarQuantizer_compute_codes" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ScalarQuantizer_compute_codes" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ScalarQuantizer_compute_codes" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ScalarQuantizer const *)arg1)->compute_codes((float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ScalarQuantizer_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_decode" "', argument " "1"" of type '" "faiss::ScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ScalarQuantizer_decode" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ScalarQuantizer_decode" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ScalarQuantizer_decode" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ScalarQuantizer const *)arg1)->decode((uint8_t const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_select_quantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ScalarQuantizer::Quantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_select_quantizer" "', argument " "1"" of type '" "faiss::ScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ScalarQuantizer::Quantizer *)((faiss::ScalarQuantizer const *)arg1)->select_quantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ScalarQuantizer__Quantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_get_distance_computer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  faiss::MetricType arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::ScalarQuantizer::SQDistanceComputer *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_get_distance_computer" "', argument " "1"" of type '" "faiss::ScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ScalarQuantizer_get_distance_computer" "', argument " "2"" of type '" "faiss::MetricType""'");
+  } 
+  arg2 = static_cast< faiss::MetricType >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ScalarQuantizer::SQDistanceComputer *)((faiss::ScalarQuantizer const *)arg1)->get_distance_computer(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ScalarQuantizer__SQDistanceComputer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_get_distance_computer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::ScalarQuantizer::SQDistanceComputer *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_get_distance_computer" "', argument " "1"" of type '" "faiss::ScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ScalarQuantizer::SQDistanceComputer *)((faiss::ScalarQuantizer const *)arg1)->get_distance_computer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ScalarQuantizer__SQDistanceComputer, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_get_distance_computer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ScalarQuantizer_get_distance_computer", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ScalarQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_ScalarQuantizer_get_distance_computer__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ScalarQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_ScalarQuantizer_get_distance_computer__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ScalarQuantizer_get_distance_computer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ScalarQuantizer::get_distance_computer(faiss::MetricType) const\n"
+    "    faiss::ScalarQuantizer::get_distance_computer() const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_select_InvertedListScanner__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  faiss::MetricType arg2 ;
+  faiss::Index *arg3 = (faiss::Index *) 0 ;
+  bool arg4 ;
+  bool arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  bool val4 ;
+  int ecode4 = 0 ;
+  bool val5 ;
+  int ecode5 = 0 ;
+  faiss::InvertedListScanner *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_select_InvertedListScanner" "', argument " "1"" of type '" "faiss::ScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ScalarQuantizer_select_InvertedListScanner" "', argument " "2"" of type '" "faiss::MetricType""'");
+  } 
+  arg2 = static_cast< faiss::MetricType >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ScalarQuantizer_select_InvertedListScanner" "', argument " "3"" of type '" "faiss::Index const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::Index * >(argp3);
+  ecode4 = SWIG_AsVal_bool(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ScalarQuantizer_select_InvertedListScanner" "', argument " "4"" of type '" "bool""'");
+  } 
+  arg4 = static_cast< bool >(val4);
+  ecode5 = SWIG_AsVal_bool(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ScalarQuantizer_select_InvertedListScanner" "', argument " "5"" of type '" "bool""'");
+  } 
+  arg5 = static_cast< bool >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedListScanner *)((faiss::ScalarQuantizer const *)arg1)->select_InvertedListScanner(arg2,(faiss::Index const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedListScanner, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_select_InvertedListScanner__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  faiss::MetricType arg2 ;
+  faiss::Index *arg3 = (faiss::Index *) 0 ;
+  bool arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  bool val4 ;
+  int ecode4 = 0 ;
+  faiss::InvertedListScanner *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ScalarQuantizer_select_InvertedListScanner" "', argument " "1"" of type '" "faiss::ScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ScalarQuantizer_select_InvertedListScanner" "', argument " "2"" of type '" "faiss::MetricType""'");
+  } 
+  arg2 = static_cast< faiss::MetricType >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ScalarQuantizer_select_InvertedListScanner" "', argument " "3"" of type '" "faiss::Index const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::Index * >(argp3);
+  ecode4 = SWIG_AsVal_bool(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ScalarQuantizer_select_InvertedListScanner" "', argument " "4"" of type '" "bool""'");
+  } 
+  arg4 = static_cast< bool >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedListScanner *)((faiss::ScalarQuantizer const *)arg1)->select_InvertedListScanner(arg2,(faiss::Index const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedListScanner, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ScalarQuantizer_select_InvertedListScanner(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ScalarQuantizer_select_InvertedListScanner", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ScalarQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_faiss__Index, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_bool(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_ScalarQuantizer_select_InvertedListScanner__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ScalarQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_faiss__Index, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_bool(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_bool(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_ScalarQuantizer_select_InvertedListScanner__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ScalarQuantizer_select_InvertedListScanner'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ScalarQuantizer::select_InvertedListScanner(faiss::MetricType,faiss::Index const *,bool,bool) const\n"
+    "    faiss::ScalarQuantizer::select_InvertedListScanner(faiss::MetricType,faiss::Index const *,bool) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ScalarQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ScalarQuantizer *arg1 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ScalarQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ScalarQuantizer" "', argument " "1"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ScalarQuantizer * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ScalarQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ScalarQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ScalarQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexScalarQuantizer_sq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexScalarQuantizer *arg1 = (faiss::IndexScalarQuantizer *) 0 ;
+  faiss::ScalarQuantizer *arg2 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexScalarQuantizer_sq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexScalarQuantizer_sq_set" "', argument " "1"" of type '" "faiss::IndexScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexScalarQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexScalarQuantizer_sq_set" "', argument " "2"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ScalarQuantizer * >(argp2);
+  if (arg1) (arg1)->sq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexScalarQuantizer_sq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexScalarQuantizer *arg1 = (faiss::IndexScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ScalarQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexScalarQuantizer_sq_get" "', argument " "1"" of type '" "faiss::IndexScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexScalarQuantizer * >(argp1);
+  result = (faiss::ScalarQuantizer *)& ((arg1)->sq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexScalarQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  faiss::ScalarQuantizer::QuantizerType arg2 ;
+  faiss::MetricType arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexScalarQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexScalarQuantizer" "', argument " "2"" of type '" "faiss::ScalarQuantizer::QuantizerType""'");
+  } 
+  arg2 = static_cast< faiss::ScalarQuantizer::QuantizerType >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexScalarQuantizer" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexScalarQuantizer *)new faiss::IndexScalarQuantizer(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexScalarQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  faiss::ScalarQuantizer::QuantizerType arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexScalarQuantizer" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexScalarQuantizer" "', argument " "2"" of type '" "faiss::ScalarQuantizer::QuantizerType""'");
+  } 
+  arg2 = static_cast< faiss::ScalarQuantizer::QuantizerType >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexScalarQuantizer *)new faiss::IndexScalarQuantizer(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexScalarQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexScalarQuantizer *)new faiss::IndexScalarQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexScalarQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexScalarQuantizer", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexScalarQuantizer__SWIG_2(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexScalarQuantizer__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexScalarQuantizer__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexScalarQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexScalarQuantizer::IndexScalarQuantizer(int,faiss::ScalarQuantizer::QuantizerType,faiss::MetricType)\n"
+    "    faiss::IndexScalarQuantizer::IndexScalarQuantizer(int,faiss::ScalarQuantizer::QuantizerType)\n"
+    "    faiss::IndexScalarQuantizer::IndexScalarQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexScalarQuantizer_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexScalarQuantizer *arg1 = (faiss::IndexScalarQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexScalarQuantizer_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexScalarQuantizer_train" "', argument " "1"" of type '" "faiss::IndexScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexScalarQuantizer_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexScalarQuantizer_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexScalarQuantizer_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexScalarQuantizer *arg1 = (faiss::IndexScalarQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexScalarQuantizer_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexScalarQuantizer_search" "', argument " "1"" of type '" "faiss::IndexScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexScalarQuantizer_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexScalarQuantizer_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexScalarQuantizer_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexScalarQuantizer_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexScalarQuantizer_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexScalarQuantizer const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexScalarQuantizer_get_distance_computer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexScalarQuantizer *arg1 = (faiss::IndexScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DistanceComputer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexScalarQuantizer_get_distance_computer" "', argument " "1"" of type '" "faiss::IndexScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexScalarQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::DistanceComputer *)((faiss::IndexScalarQuantizer const *)arg1)->get_distance_computer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DistanceComputer, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexScalarQuantizer_sa_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexScalarQuantizer *arg1 = (faiss::IndexScalarQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexScalarQuantizer_sa_encode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexScalarQuantizer_sa_encode" "', argument " "1"" of type '" "faiss::IndexScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexScalarQuantizer_sa_encode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexScalarQuantizer_sa_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexScalarQuantizer_sa_encode" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexScalarQuantizer const *)arg1)->sa_encode(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexScalarQuantizer_sa_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexScalarQuantizer *arg1 = (faiss::IndexScalarQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexScalarQuantizer_sa_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexScalarQuantizer_sa_decode" "', argument " "1"" of type '" "faiss::IndexScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexScalarQuantizer_sa_decode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexScalarQuantizer_sa_decode" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexScalarQuantizer_sa_decode" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexScalarQuantizer const *)arg1)->sa_decode(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexScalarQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexScalarQuantizer *arg1 = (faiss::IndexScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexScalarQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexScalarQuantizer" "', argument " "1"" of type '" "faiss::IndexScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexScalarQuantizer * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexScalarQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexScalarQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexScalarQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexIVFScalarQuantizer_sq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFScalarQuantizer *arg1 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  faiss::ScalarQuantizer *arg2 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFScalarQuantizer_sq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFScalarQuantizer_sq_set" "', argument " "1"" of type '" "faiss::IndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFScalarQuantizer_sq_set" "', argument " "2"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ScalarQuantizer * >(argp2);
+  if (arg1) (arg1)->sq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFScalarQuantizer_sq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFScalarQuantizer *arg1 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ScalarQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFScalarQuantizer_sq_get" "', argument " "1"" of type '" "faiss::IndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp1);
+  result = (faiss::ScalarQuantizer *)& ((arg1)->sq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFScalarQuantizer_by_residual_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFScalarQuantizer *arg1 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFScalarQuantizer_by_residual_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFScalarQuantizer_by_residual_set" "', argument " "1"" of type '" "faiss::IndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFScalarQuantizer_by_residual_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->by_residual = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFScalarQuantizer_by_residual_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFScalarQuantizer *arg1 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFScalarQuantizer_by_residual_get" "', argument " "1"" of type '" "faiss::IndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp1);
+  result = (bool) ((arg1)->by_residual);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFScalarQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::ScalarQuantizer::QuantizerType arg4 ;
+  faiss::MetricType arg5 ;
+  bool arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  bool val6 ;
+  int ecode6 = 0 ;
+  faiss::IndexIVFScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "4"" of type '" "faiss::ScalarQuantizer::QuantizerType""'");
+  } 
+  arg4 = static_cast< faiss::ScalarQuantizer::QuantizerType >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "5"" of type '" "faiss::MetricType""'");
+  } 
+  arg5 = static_cast< faiss::MetricType >(val5);
+  ecode6 = SWIG_AsVal_bool(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "6"" of type '" "bool""'");
+  } 
+  arg6 = static_cast< bool >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFScalarQuantizer *)new faiss::IndexIVFScalarQuantizer(arg1,arg2,arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFScalarQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::ScalarQuantizer::QuantizerType arg4 ;
+  faiss::MetricType arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  faiss::IndexIVFScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "4"" of type '" "faiss::ScalarQuantizer::QuantizerType""'");
+  } 
+  arg4 = static_cast< faiss::ScalarQuantizer::QuantizerType >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "5"" of type '" "faiss::MetricType""'");
+  } 
+  arg5 = static_cast< faiss::MetricType >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFScalarQuantizer *)new faiss::IndexIVFScalarQuantizer(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFScalarQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::ScalarQuantizer::QuantizerType arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::IndexIVFScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFScalarQuantizer" "', argument " "4"" of type '" "faiss::ScalarQuantizer::QuantizerType""'");
+  } 
+  arg4 = static_cast< faiss::ScalarQuantizer::QuantizerType >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFScalarQuantizer *)new faiss::IndexIVFScalarQuantizer(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFScalarQuantizer__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFScalarQuantizer *)new faiss::IndexIVFScalarQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFScalarQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexIVFScalarQuantizer", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexIVFScalarQuantizer__SWIG_3(self, argc, argv);
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_IndexIVFScalarQuantizer__SWIG_2(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_IndexIVFScalarQuantizer__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_bool(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_new_IndexIVFScalarQuantizer__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexIVFScalarQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFScalarQuantizer::IndexIVFScalarQuantizer(faiss::Index *,size_t,size_t,faiss::ScalarQuantizer::QuantizerType,faiss::MetricType,bool)\n"
+    "    faiss::IndexIVFScalarQuantizer::IndexIVFScalarQuantizer(faiss::Index *,size_t,size_t,faiss::ScalarQuantizer::QuantizerType,faiss::MetricType)\n"
+    "    faiss::IndexIVFScalarQuantizer::IndexIVFScalarQuantizer(faiss::Index *,size_t,size_t,faiss::ScalarQuantizer::QuantizerType)\n"
+    "    faiss::IndexIVFScalarQuantizer::IndexIVFScalarQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFScalarQuantizer_train_residual(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFScalarQuantizer *arg1 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFScalarQuantizer_train_residual", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFScalarQuantizer_train_residual" "', argument " "1"" of type '" "faiss::IndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFScalarQuantizer_train_residual" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFScalarQuantizer_train_residual" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train_residual(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFScalarQuantizer_encode_vectors__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFScalarQuantizer *arg1 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  bool arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  bool val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFScalarQuantizer_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVFScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFScalarQuantizer_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFScalarQuantizer_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFScalarQuantizer_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFScalarQuantizer_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  ecode6 = SWIG_AsVal_bool(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "IndexIVFScalarQuantizer_encode_vectors" "', argument " "6"" of type '" "bool""'");
+  } 
+  arg6 = static_cast< bool >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFScalarQuantizer const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFScalarQuantizer_encode_vectors__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFScalarQuantizer *arg1 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFScalarQuantizer_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVFScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFScalarQuantizer_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFScalarQuantizer_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFScalarQuantizer_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFScalarQuantizer_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFScalarQuantizer const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFScalarQuantizer_encode_vectors(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVFScalarQuantizer_encode_vectors", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_IndexIVFScalarQuantizer_encode_vectors__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              {
+                int res = SWIG_AsVal_bool(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_IndexIVFScalarQuantizer_encode_vectors__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVFScalarQuantizer_encode_vectors'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFScalarQuantizer::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *,bool) const\n"
+    "    faiss::IndexIVFScalarQuantizer::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFScalarQuantizer_add_core(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFScalarQuantizer *arg1 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFScalarQuantizer_add_core", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFScalarQuantizer_add_core" "', argument " "1"" of type '" "faiss::IndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFScalarQuantizer_add_core" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFScalarQuantizer_add_core" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFScalarQuantizer_add_core" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFScalarQuantizer_add_core" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_core(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,(faiss::Index::idx_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFScalarQuantizer_get_InvertedListScanner(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFScalarQuantizer *arg1 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedListScanner *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFScalarQuantizer_get_InvertedListScanner", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFScalarQuantizer_get_InvertedListScanner" "', argument " "1"" of type '" "faiss::IndexIVFScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFScalarQuantizer_get_InvertedListScanner" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedListScanner *)((faiss::IndexIVFScalarQuantizer const *)arg1)->get_InvertedListScanner(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedListScanner, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFScalarQuantizer_reconstruct_from_offset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFScalarQuantizer *arg1 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  int64_t arg2 ;
+  int64_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFScalarQuantizer_reconstruct_from_offset", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFScalarQuantizer_reconstruct_from_offset" "', argument " "1"" of type '" "faiss::IndexIVFScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFScalarQuantizer_reconstruct_from_offset" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexIVFScalarQuantizer_reconstruct_from_offset" "', argument " "3"" of type '" "int64_t""'");
+  } 
+  arg3 = static_cast< int64_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFScalarQuantizer_reconstruct_from_offset" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFScalarQuantizer const *)arg1)->reconstruct_from_offset(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFScalarQuantizer_sa_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFScalarQuantizer *arg1 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFScalarQuantizer_sa_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFScalarQuantizer_sa_decode" "', argument " "1"" of type '" "faiss::IndexIVFScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFScalarQuantizer_sa_decode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFScalarQuantizer_sa_decode" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFScalarQuantizer_sa_decode" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFScalarQuantizer const *)arg1)->sa_decode(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIVFScalarQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFScalarQuantizer *arg1 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIVFScalarQuantizer" "', argument " "1"" of type '" "faiss::IndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexIVFScalarQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIVFScalarQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_vt_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  faiss::VectorTransform *arg2 = (faiss::VectorTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFSpectralHash_vt_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_vt_set" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__VectorTransform, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFSpectralHash_vt_set" "', argument " "2"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::VectorTransform * >(argp2);
+  if (arg1) (arg1)->vt = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_vt_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::VectorTransform *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_vt_get" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  result = (faiss::VectorTransform *) ((arg1)->vt);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFSpectralHash_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_own_fields_set" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFSpectralHash_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_own_fields_get" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_nbit_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFSpectralHash_nbit_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_nbit_set" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFSpectralHash_nbit_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nbit = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_nbit_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_nbit_get" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  result = (int) ((arg1)->nbit);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_period_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFSpectralHash_period_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_period_set" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFSpectralHash_period_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->period = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_period_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_period_get" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  result = (float) ((arg1)->period);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_threshold_type_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  faiss::IndexIVFSpectralHash::ThresholdType arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFSpectralHash_threshold_type_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_threshold_type_set" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFSpectralHash_threshold_type_set" "', argument " "2"" of type '" "faiss::IndexIVFSpectralHash::ThresholdType""'");
+  } 
+  arg2 = static_cast< faiss::IndexIVFSpectralHash::ThresholdType >(val2);
+  if (arg1) (arg1)->threshold_type = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_threshold_type_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IndexIVFSpectralHash::ThresholdType result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_threshold_type_get" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  result = (faiss::IndexIVFSpectralHash::ThresholdType) ((arg1)->threshold_type);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_trained_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFSpectralHash_trained_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_trained_set" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFSpectralHash_trained_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->trained = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_trained_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_trained_get" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->trained);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFSpectralHash__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  int arg4 ;
+  float arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  float val5 ;
+  int ecode5 = 0 ;
+  faiss::IndexIVFSpectralHash *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFSpectralHash" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFSpectralHash" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFSpectralHash" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFSpectralHash" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  ecode5 = SWIG_AsVal_float(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFSpectralHash" "', argument " "5"" of type '" "float""'");
+  } 
+  arg5 = static_cast< float >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFSpectralHash *)new faiss::IndexIVFSpectralHash(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFSpectralHash, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFSpectralHash__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFSpectralHash *)new faiss::IndexIVFSpectralHash();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFSpectralHash, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFSpectralHash(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexIVFSpectralHash", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexIVFSpectralHash__SWIG_1(self, argc, argv);
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_float(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_IndexIVFSpectralHash__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexIVFSpectralHash'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFSpectralHash::IndexIVFSpectralHash(faiss::Index *,size_t,size_t,int,float)\n"
+    "    faiss::IndexIVFSpectralHash::IndexIVFSpectralHash()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_train_residual(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFSpectralHash_train_residual", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_train_residual" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFSpectralHash_train_residual" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFSpectralHash_train_residual" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train_residual(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_encode_vectors__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  bool arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  bool val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFSpectralHash_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFSpectralHash_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFSpectralHash_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFSpectralHash_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  ecode6 = SWIG_AsVal_bool(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "IndexIVFSpectralHash_encode_vectors" "', argument " "6"" of type '" "bool""'");
+  } 
+  arg6 = static_cast< bool >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFSpectralHash const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_encode_vectors__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFSpectralHash_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFSpectralHash_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFSpectralHash_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFSpectralHash_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFSpectralHash const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_encode_vectors(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVFSpectralHash_encode_vectors", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_IndexIVFSpectralHash_encode_vectors__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              {
+                int res = SWIG_AsVal_bool(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_IndexIVFSpectralHash_encode_vectors__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVFSpectralHash_encode_vectors'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFSpectralHash::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *,bool) const\n"
+    "    faiss::IndexIVFSpectralHash::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_get_InvertedListScanner(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedListScanner *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFSpectralHash_get_InvertedListScanner", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_get_InvertedListScanner" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFSpectralHash_get_InvertedListScanner" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedListScanner *)((faiss::IndexIVFSpectralHash const *)arg1)->get_InvertedListScanner(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedListScanner, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_replace_vt__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  faiss::VectorTransform *arg2 = (faiss::VectorTransform *) 0 ;
+  bool arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_replace_vt" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFSpectralHash_replace_vt" "', argument " "2"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::VectorTransform * >(argp2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexIVFSpectralHash_replace_vt" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->replace_vt(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_replace_vt__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  faiss::VectorTransform *arg2 = (faiss::VectorTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_replace_vt" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFSpectralHash_replace_vt" "', argument " "2"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::VectorTransform * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->replace_vt(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_replace_vt__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  faiss::IndexPreTransform *arg2 = (faiss::IndexPreTransform *) 0 ;
+  bool arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_replace_vt" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFSpectralHash_replace_vt" "', argument " "2"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexPreTransform * >(argp2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexIVFSpectralHash_replace_vt" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->replace_vt(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_replace_vt__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  faiss::IndexPreTransform *arg2 = (faiss::IndexPreTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFSpectralHash_replace_vt" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexPreTransform, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFSpectralHash_replace_vt" "', argument " "2"" of type '" "faiss::IndexPreTransform *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexPreTransform * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->replace_vt(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFSpectralHash_replace_vt(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVFSpectralHash_replace_vt", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__VectorTransform, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_IndexIVFSpectralHash_replace_vt__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexPreTransform, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_IndexIVFSpectralHash_replace_vt__SWIG_3(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexPreTransform, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_IndexIVFSpectralHash_replace_vt__SWIG_2(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFSpectralHash, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__VectorTransform, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_IndexIVFSpectralHash_replace_vt__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVFSpectralHash_replace_vt'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFSpectralHash::replace_vt(faiss::VectorTransform *,bool)\n"
+    "    faiss::IndexIVFSpectralHash::replace_vt(faiss::VectorTransform *)\n"
+    "    faiss::IndexIVFSpectralHash::replace_vt(faiss::IndexPreTransform *,bool)\n"
+    "    faiss::IndexIVFSpectralHash::replace_vt(faiss::IndexPreTransform *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIVFSpectralHash(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFSpectralHash *arg1 = (faiss::IndexIVFSpectralHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFSpectralHash, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIVFSpectralHash" "', argument " "1"" of type '" "faiss::IndexIVFSpectralHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFSpectralHash * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexIVFSpectralHash_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIVFSpectralHash, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIVFSpectralHash_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexIVFAdditiveQuantizer_aq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFAdditiveQuantizer *arg1 = (faiss::IndexIVFAdditiveQuantizer *) 0 ;
+  faiss::AdditiveQuantizer *arg2 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFAdditiveQuantizer_aq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFAdditiveQuantizer_aq_set" "', argument " "1"" of type '" "faiss::IndexIVFAdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFAdditiveQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__AdditiveQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFAdditiveQuantizer_aq_set" "', argument " "2"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp2);
+  if (arg1) (arg1)->aq = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFAdditiveQuantizer_aq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFAdditiveQuantizer *arg1 = (faiss::IndexIVFAdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AdditiveQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFAdditiveQuantizer_aq_get" "', argument " "1"" of type '" "faiss::IndexIVFAdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFAdditiveQuantizer * >(argp1);
+  result = (faiss::AdditiveQuantizer *) ((arg1)->aq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFAdditiveQuantizer_by_residual_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFAdditiveQuantizer *arg1 = (faiss::IndexIVFAdditiveQuantizer *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFAdditiveQuantizer_by_residual_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFAdditiveQuantizer_by_residual_set" "', argument " "1"" of type '" "faiss::IndexIVFAdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFAdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFAdditiveQuantizer_by_residual_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->by_residual = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFAdditiveQuantizer_by_residual_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFAdditiveQuantizer *arg1 = (faiss::IndexIVFAdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFAdditiveQuantizer_by_residual_get" "', argument " "1"" of type '" "faiss::IndexIVFAdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFAdditiveQuantizer * >(argp1);
+  result = (bool) ((arg1)->by_residual);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFAdditiveQuantizer_use_precomputed_table_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFAdditiveQuantizer *arg1 = (faiss::IndexIVFAdditiveQuantizer *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFAdditiveQuantizer_use_precomputed_table_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFAdditiveQuantizer_use_precomputed_table_set" "', argument " "1"" of type '" "faiss::IndexIVFAdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFAdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFAdditiveQuantizer_use_precomputed_table_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->use_precomputed_table = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFAdditiveQuantizer_use_precomputed_table_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFAdditiveQuantizer *arg1 = (faiss::IndexIVFAdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFAdditiveQuantizer_use_precomputed_table_get" "', argument " "1"" of type '" "faiss::IndexIVFAdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFAdditiveQuantizer * >(argp1);
+  result = (int) ((arg1)->use_precomputed_table);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFAdditiveQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  faiss::MetricType arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  faiss::IndexIVFAdditiveQuantizer *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFAdditiveQuantizer" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_IndexIVFAdditiveQuantizer" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFAdditiveQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFAdditiveQuantizer" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFAdditiveQuantizer" "', argument " "5"" of type '" "faiss::MetricType""'");
+  } 
+  arg5 = static_cast< faiss::MetricType >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFAdditiveQuantizer *)new faiss::IndexIVFAdditiveQuantizer(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFAdditiveQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  faiss::IndexIVFAdditiveQuantizer *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFAdditiveQuantizer" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_IndexIVFAdditiveQuantizer" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFAdditiveQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFAdditiveQuantizer" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFAdditiveQuantizer *)new faiss::IndexIVFAdditiveQuantizer(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFAdditiveQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AdditiveQuantizer *arg1 = (faiss::AdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexIVFAdditiveQuantizer *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFAdditiveQuantizer" "', argument " "1"" of type '" "faiss::AdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AdditiveQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFAdditiveQuantizer *)new faiss::IndexIVFAdditiveQuantizer(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFAdditiveQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexIVFAdditiveQuantizer", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AdditiveQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexIVFAdditiveQuantizer__SWIG_2(self, argc, argv);
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AdditiveQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__Index, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_IndexIVFAdditiveQuantizer__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AdditiveQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__Index, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_IndexIVFAdditiveQuantizer__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexIVFAdditiveQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFAdditiveQuantizer::IndexIVFAdditiveQuantizer(faiss::AdditiveQuantizer *,faiss::Index *,size_t,size_t,faiss::MetricType)\n"
+    "    faiss::IndexIVFAdditiveQuantizer::IndexIVFAdditiveQuantizer(faiss::AdditiveQuantizer *,faiss::Index *,size_t,size_t)\n"
+    "    faiss::IndexIVFAdditiveQuantizer::IndexIVFAdditiveQuantizer(faiss::AdditiveQuantizer *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFAdditiveQuantizer_train_residual(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFAdditiveQuantizer *arg1 = (faiss::IndexIVFAdditiveQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFAdditiveQuantizer_train_residual", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFAdditiveQuantizer_train_residual" "', argument " "1"" of type '" "faiss::IndexIVFAdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFAdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFAdditiveQuantizer_train_residual" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFAdditiveQuantizer_train_residual" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train_residual(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFAdditiveQuantizer_encode_vectors__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFAdditiveQuantizer *arg1 = (faiss::IndexIVFAdditiveQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  bool arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  bool val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFAdditiveQuantizer_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVFAdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFAdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFAdditiveQuantizer_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFAdditiveQuantizer_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFAdditiveQuantizer_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFAdditiveQuantizer_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  ecode6 = SWIG_AsVal_bool(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "IndexIVFAdditiveQuantizer_encode_vectors" "', argument " "6"" of type '" "bool""'");
+  } 
+  arg6 = static_cast< bool >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFAdditiveQuantizer const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFAdditiveQuantizer_encode_vectors__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFAdditiveQuantizer *arg1 = (faiss::IndexIVFAdditiveQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFAdditiveQuantizer_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVFAdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFAdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFAdditiveQuantizer_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFAdditiveQuantizer_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFAdditiveQuantizer_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFAdditiveQuantizer_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFAdditiveQuantizer const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFAdditiveQuantizer_encode_vectors(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVFAdditiveQuantizer_encode_vectors", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_IndexIVFAdditiveQuantizer_encode_vectors__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              {
+                int res = SWIG_AsVal_bool(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_IndexIVFAdditiveQuantizer_encode_vectors__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVFAdditiveQuantizer_encode_vectors'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFAdditiveQuantizer::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *,bool) const\n"
+    "    faiss::IndexIVFAdditiveQuantizer::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFAdditiveQuantizer_get_InvertedListScanner(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFAdditiveQuantizer *arg1 = (faiss::IndexIVFAdditiveQuantizer *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedListScanner *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFAdditiveQuantizer_get_InvertedListScanner", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFAdditiveQuantizer_get_InvertedListScanner" "', argument " "1"" of type '" "faiss::IndexIVFAdditiveQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFAdditiveQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFAdditiveQuantizer_get_InvertedListScanner" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedListScanner *)((faiss::IndexIVFAdditiveQuantizer const *)arg1)->get_InvertedListScanner(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedListScanner, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIVFAdditiveQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFAdditiveQuantizer *arg1 = (faiss::IndexIVFAdditiveQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIVFAdditiveQuantizer" "', argument " "1"" of type '" "faiss::IndexIVFAdditiveQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFAdditiveQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexIVFAdditiveQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIVFAdditiveQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIVFAdditiveQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexIVFResidualQuantizer_rq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFResidualQuantizer *arg1 = (faiss::IndexIVFResidualQuantizer *) 0 ;
+  faiss::ResidualQuantizer *arg2 = (faiss::ResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFResidualQuantizer_rq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFResidualQuantizer_rq_set" "', argument " "1"" of type '" "faiss::IndexIVFResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFResidualQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFResidualQuantizer_rq_set" "', argument " "2"" of type '" "faiss::ResidualQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ResidualQuantizer * >(argp2);
+  if (arg1) (arg1)->rq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFResidualQuantizer_rq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFResidualQuantizer *arg1 = (faiss::IndexIVFResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ResidualQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFResidualQuantizer_rq_get" "', argument " "1"" of type '" "faiss::IndexIVFResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFResidualQuantizer * >(argp1);
+  result = (faiss::ResidualQuantizer *)& ((arg1)->rq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ResidualQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFResidualQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  std::vector< size_t > *arg4 = 0 ;
+  faiss::MetricType arg5 ;
+  faiss::IndexIVFAdditiveQuantizer::Search_type_t arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  faiss::IndexIVFResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_std__vectorT_unsigned_long_t,  0  | 0);
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "4"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_IndexIVFResidualQuantizer" "', argument " "4"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  arg4 = reinterpret_cast< std::vector< size_t > * >(argp4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "5"" of type '" "faiss::MetricType""'");
+  } 
+  arg5 = static_cast< faiss::MetricType >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "6"" of type '" "faiss::IndexIVFAdditiveQuantizer::Search_type_t""'");
+  } 
+  arg6 = static_cast< faiss::IndexIVFAdditiveQuantizer::Search_type_t >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFResidualQuantizer *)new faiss::IndexIVFResidualQuantizer(arg1,arg2,arg3,(std::vector< size_t > const &)*arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFResidualQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  std::vector< size_t > *arg4 = 0 ;
+  faiss::MetricType arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  faiss::IndexIVFResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_std__vectorT_unsigned_long_t,  0  | 0);
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "4"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_IndexIVFResidualQuantizer" "', argument " "4"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  arg4 = reinterpret_cast< std::vector< size_t > * >(argp4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "5"" of type '" "faiss::MetricType""'");
+  } 
+  arg5 = static_cast< faiss::MetricType >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFResidualQuantizer *)new faiss::IndexIVFResidualQuantizer(arg1,arg2,arg3,(std::vector< size_t > const &)*arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFResidualQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  std::vector< size_t > *arg4 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  faiss::IndexIVFResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_std__vectorT_unsigned_long_t,  0  | 0);
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "4"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_IndexIVFResidualQuantizer" "', argument " "4"" of type '" "std::vector< size_t > const &""'"); 
+  }
+  arg4 = reinterpret_cast< std::vector< size_t > * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFResidualQuantizer *)new faiss::IndexIVFResidualQuantizer(arg1,arg2,arg3,(std::vector< size_t > const &)*arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFResidualQuantizer__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  faiss::MetricType arg6 ;
+  faiss::IndexIVFAdditiveQuantizer::Search_type_t arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  int val7 ;
+  int ecode7 = 0 ;
+  faiss::IndexIVFResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  ecode7 = SWIG_AsVal_int(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "7"" of type '" "faiss::IndexIVFAdditiveQuantizer::Search_type_t""'");
+  } 
+  arg7 = static_cast< faiss::IndexIVFAdditiveQuantizer::Search_type_t >(val7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFResidualQuantizer *)new faiss::IndexIVFResidualQuantizer(arg1,arg2,arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFResidualQuantizer__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  faiss::MetricType arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  faiss::IndexIVFResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFResidualQuantizer *)new faiss::IndexIVFResidualQuantizer(arg1,arg2,arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFResidualQuantizer__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  faiss::IndexIVFResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFResidualQuantizer" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFResidualQuantizer *)new faiss::IndexIVFResidualQuantizer(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFResidualQuantizer__SWIG_6(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFResidualQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFResidualQuantizer *)new faiss::IndexIVFResidualQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFResidualQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFResidualQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexIVFResidualQuantizer", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexIVFResidualQuantizer__SWIG_6(self, argc, argv);
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          int res = SWIG_ConvertPtr(argv[3], 0, SWIGTYPE_p_std__vectorT_unsigned_long_t, SWIG_POINTER_NO_NULL | 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_new_IndexIVFResidualQuantizer__SWIG_2(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          int res = SWIG_ConvertPtr(argv[3], 0, SWIGTYPE_p_std__vectorT_unsigned_long_t, SWIG_POINTER_NO_NULL | 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_IndexIVFResidualQuantizer__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_IndexIVFResidualQuantizer__SWIG_5(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          int res = SWIG_ConvertPtr(argv[3], 0, SWIGTYPE_p_std__vectorT_unsigned_long_t, SWIG_POINTER_NO_NULL | 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_new_IndexIVFResidualQuantizer__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_new_IndexIVFResidualQuantizer__SWIG_4(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_int(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  return _wrap_new_IndexIVFResidualQuantizer__SWIG_3(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexIVFResidualQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFResidualQuantizer::IndexIVFResidualQuantizer(faiss::Index *,size_t,size_t,std::vector< size_t > const &,faiss::MetricType,faiss::IndexIVFAdditiveQuantizer::Search_type_t)\n"
+    "    faiss::IndexIVFResidualQuantizer::IndexIVFResidualQuantizer(faiss::Index *,size_t,size_t,std::vector< size_t > const &,faiss::MetricType)\n"
+    "    faiss::IndexIVFResidualQuantizer::IndexIVFResidualQuantizer(faiss::Index *,size_t,size_t,std::vector< size_t > const &)\n"
+    "    faiss::IndexIVFResidualQuantizer::IndexIVFResidualQuantizer(faiss::Index *,size_t,size_t,size_t,size_t,faiss::MetricType,faiss::IndexIVFAdditiveQuantizer::Search_type_t)\n"
+    "    faiss::IndexIVFResidualQuantizer::IndexIVFResidualQuantizer(faiss::Index *,size_t,size_t,size_t,size_t,faiss::MetricType)\n"
+    "    faiss::IndexIVFResidualQuantizer::IndexIVFResidualQuantizer(faiss::Index *,size_t,size_t,size_t,size_t)\n"
+    "    faiss::IndexIVFResidualQuantizer::IndexIVFResidualQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIVFResidualQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFResidualQuantizer *arg1 = (faiss::IndexIVFResidualQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIVFResidualQuantizer" "', argument " "1"" of type '" "faiss::IndexIVFResidualQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFResidualQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexIVFResidualQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIVFResidualQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIVFResidualQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexIVFLocalSearchQuantizer_lsq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFLocalSearchQuantizer *arg1 = (faiss::IndexIVFLocalSearchQuantizer *) 0 ;
+  faiss::LocalSearchQuantizer *arg2 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFLocalSearchQuantizer_lsq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFLocalSearchQuantizer_lsq_set" "', argument " "1"" of type '" "faiss::IndexIVFLocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFLocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFLocalSearchQuantizer_lsq_set" "', argument " "2"" of type '" "faiss::LocalSearchQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp2);
+  if (arg1) (arg1)->lsq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFLocalSearchQuantizer_lsq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFLocalSearchQuantizer *arg1 = (faiss::IndexIVFLocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::LocalSearchQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFLocalSearchQuantizer_lsq_get" "', argument " "1"" of type '" "faiss::IndexIVFLocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFLocalSearchQuantizer * >(argp1);
+  result = (faiss::LocalSearchQuantizer *)& ((arg1)->lsq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFLocalSearchQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  faiss::MetricType arg6 ;
+  faiss::IndexIVFAdditiveQuantizer::Search_type_t arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  int val7 ;
+  int ecode7 = 0 ;
+  faiss::IndexIVFLocalSearchQuantizer *result = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  ecode7 = SWIG_AsVal_int(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "7"" of type '" "faiss::IndexIVFAdditiveQuantizer::Search_type_t""'");
+  } 
+  arg7 = static_cast< faiss::IndexIVFAdditiveQuantizer::Search_type_t >(val7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFLocalSearchQuantizer *)new faiss::IndexIVFLocalSearchQuantizer(arg1,arg2,arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFLocalSearchQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  faiss::MetricType arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  faiss::IndexIVFLocalSearchQuantizer *result = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFLocalSearchQuantizer *)new faiss::IndexIVFLocalSearchQuantizer(arg1,arg2,arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFLocalSearchQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  faiss::IndexIVFLocalSearchQuantizer *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFLocalSearchQuantizer" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFLocalSearchQuantizer *)new faiss::IndexIVFLocalSearchQuantizer(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFLocalSearchQuantizer__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFLocalSearchQuantizer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFLocalSearchQuantizer *)new faiss::IndexIVFLocalSearchQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFLocalSearchQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexIVFLocalSearchQuantizer", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexIVFLocalSearchQuantizer__SWIG_3(self, argc, argv);
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_IndexIVFLocalSearchQuantizer__SWIG_2(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_new_IndexIVFLocalSearchQuantizer__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_int(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  return _wrap_new_IndexIVFLocalSearchQuantizer__SWIG_0(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexIVFLocalSearchQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFLocalSearchQuantizer::IndexIVFLocalSearchQuantizer(faiss::Index *,size_t,size_t,size_t,size_t,faiss::MetricType,faiss::IndexIVFAdditiveQuantizer::Search_type_t)\n"
+    "    faiss::IndexIVFLocalSearchQuantizer::IndexIVFLocalSearchQuantizer(faiss::Index *,size_t,size_t,size_t,size_t,faiss::MetricType)\n"
+    "    faiss::IndexIVFLocalSearchQuantizer::IndexIVFLocalSearchQuantizer(faiss::Index *,size_t,size_t,size_t,size_t)\n"
+    "    faiss::IndexIVFLocalSearchQuantizer::IndexIVFLocalSearchQuantizer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIVFLocalSearchQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFLocalSearchQuantizer *arg1 = (faiss::IndexIVFLocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIVFLocalSearchQuantizer" "', argument " "1"" of type '" "faiss::IndexIVFLocalSearchQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFLocalSearchQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexIVFLocalSearchQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIVFLocalSearchQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_HNSW_assign_probas_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  std::vector< double > *arg2 = (std::vector< double > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_assign_probas_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_assign_probas_set" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSW_assign_probas_set" "', argument " "2"" of type '" "std::vector< double > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< double > * >(argp2);
+  if (arg1) (arg1)->assign_probas = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_assign_probas_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< double > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_assign_probas_get" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  result = (std::vector< double > *)& ((arg1)->assign_probas);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_cum_nneighbor_per_level_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  std::vector< int > *arg2 = (std::vector< int > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_cum_nneighbor_per_level_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_cum_nneighbor_per_level_set" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSW_cum_nneighbor_per_level_set" "', argument " "2"" of type '" "std::vector< int > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  if (arg1) (arg1)->cum_nneighbor_per_level = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_cum_nneighbor_per_level_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< int > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_cum_nneighbor_per_level_get" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  result = (std::vector< int > *)& ((arg1)->cum_nneighbor_per_level);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_levels_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  std::vector< int > *arg2 = (std::vector< int > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_levels_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_levels_set" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSW_levels_set" "', argument " "2"" of type '" "std::vector< int > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  if (arg1) (arg1)->levels = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_levels_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< int > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_levels_get" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  result = (std::vector< int > *)& ((arg1)->levels);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_offsets_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  std::vector< size_t > *arg2 = (std::vector< size_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_offsets_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_offsets_set" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSW_offsets_set" "', argument " "2"" of type '" "std::vector< size_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< size_t > * >(argp2);
+  if (arg1) (arg1)->offsets = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_offsets_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< size_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_offsets_get" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  result = (std::vector< size_t > *)& ((arg1)->offsets);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_neighbors_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  std::vector< faiss::HNSW::storage_idx_t > *arg2 = (std::vector< faiss::HNSW::storage_idx_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_neighbors_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_neighbors_set" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSW_neighbors_set" "', argument " "2"" of type '" "std::vector< faiss::HNSW::storage_idx_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::HNSW::storage_idx_t > * >(argp2);
+  if (arg1) (arg1)->neighbors = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_neighbors_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::HNSW::storage_idx_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_neighbors_get" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  result = (std::vector< faiss::HNSW::storage_idx_t > *)& ((arg1)->neighbors);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_entry_point_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  faiss::HNSW::storage_idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_entry_point_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_entry_point_set" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_entry_point_set" "', argument " "2"" of type '" "faiss::HNSW::storage_idx_t""'");
+  } 
+  arg2 = static_cast< faiss::HNSW::storage_idx_t >(val2);
+  if (arg1) (arg1)->entry_point = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_entry_point_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::HNSW::storage_idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_entry_point_get" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  result = (faiss::HNSW::storage_idx_t) ((arg1)->entry_point);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_rng_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  faiss::RandomGenerator *arg2 = (faiss::RandomGenerator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_rng_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_rng_set" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__RandomGenerator, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSW_rng_set" "', argument " "2"" of type '" "faiss::RandomGenerator *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::RandomGenerator * >(argp2);
+  if (arg1) (arg1)->rng = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_rng_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::RandomGenerator *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_rng_get" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  result = (faiss::RandomGenerator *)& ((arg1)->rng);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RandomGenerator, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_max_level_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_max_level_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_max_level_set" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_max_level_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->max_level = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_max_level_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_max_level_get" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  result = (int) ((arg1)->max_level);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_efConstruction_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_efConstruction_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_efConstruction_set" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_efConstruction_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->efConstruction = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_efConstruction_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_efConstruction_get" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  result = (int) ((arg1)->efConstruction);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_efSearch_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_efSearch_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_efSearch_set" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_efSearch_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->efSearch = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_efSearch_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_efSearch_get" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  result = (int) ((arg1)->efSearch);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_check_relative_distance_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_check_relative_distance_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_check_relative_distance_set" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_check_relative_distance_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->check_relative_distance = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_check_relative_distance_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_check_relative_distance_get" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  result = (bool) ((arg1)->check_relative_distance);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_upper_beam_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_upper_beam_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_upper_beam_set" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_upper_beam_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->upper_beam = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_upper_beam_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_upper_beam_get" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  result = (int) ((arg1)->upper_beam);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_search_bounded_queue_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_search_bounded_queue_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_search_bounded_queue_set" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_search_bounded_queue_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->search_bounded_queue = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_search_bounded_queue_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_search_bounded_queue_get" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  result = (bool) ((arg1)->search_bounded_queue);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_set_default_probas(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  int arg2 ;
+  float arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  float val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_set_default_probas", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_set_default_probas" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_set_default_probas" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_float(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "HNSW_set_default_probas" "', argument " "3"" of type '" "float""'");
+  } 
+  arg3 = static_cast< float >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_default_probas(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_set_nb_neighbors(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  int arg2 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_set_nb_neighbors", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_set_nb_neighbors" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_set_nb_neighbors" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "HNSW_set_nb_neighbors" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_nb_neighbors(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_nb_neighbors(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_nb_neighbors", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_nb_neighbors" "', argument " "1"" of type '" "faiss::HNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_nb_neighbors" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::HNSW const *)arg1)->nb_neighbors(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_cum_nb_neighbors(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_cum_nb_neighbors", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_cum_nb_neighbors" "', argument " "1"" of type '" "faiss::HNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_cum_nb_neighbors" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::HNSW const *)arg1)->cum_nb_neighbors(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_neighbor_range(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  faiss::HNSW::idx_t arg2 ;
+  int arg3 ;
+  size_t *arg4 = (size_t *) 0 ;
+  size_t *arg5 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_neighbor_range", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_neighbor_range" "', argument " "1"" of type '" "faiss::HNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_neighbor_range" "', argument " "2"" of type '" "faiss::HNSW::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::HNSW::idx_t >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "HNSW_neighbor_range" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "HNSW_neighbor_range" "', argument " "4"" of type '" "size_t *""'"); 
+  }
+  arg4 = reinterpret_cast< size_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "HNSW_neighbor_range" "', argument " "5"" of type '" "size_t *""'"); 
+  }
+  arg5 = reinterpret_cast< size_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::HNSW const *)arg1)->neighbor_range(arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_HNSW__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::HNSW *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_HNSW" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::HNSW *)new faiss::HNSW(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HNSW, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_HNSW__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::HNSW *)new faiss::HNSW();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HNSW, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_HNSW(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_HNSW", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_HNSW__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_HNSW__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_HNSW'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::HNSW::HNSW(int)\n"
+    "    faiss::HNSW::HNSW()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_random_level(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_random_level" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)(arg1)->random_level();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_fill_with_random_links(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_fill_with_random_links", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_fill_with_random_links" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_fill_with_random_links" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->fill_with_random_links(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_add_links_starting_from(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  faiss::DistanceComputer *arg2 = 0 ;
+  faiss::HNSW::storage_idx_t arg3 ;
+  faiss::HNSW::storage_idx_t arg4 ;
+  float arg5 ;
+  int arg6 ;
+  omp_lock_t *arg7 = (omp_lock_t *) 0 ;
+  faiss::VisitedTable *arg8 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  float val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  PyObject *swig_obj[8] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_add_links_starting_from", 8, 8, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_add_links_starting_from" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSW_add_links_starting_from" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_add_links_starting_from" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DistanceComputer * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "HNSW_add_links_starting_from" "', argument " "3"" of type '" "faiss::HNSW::storage_idx_t""'");
+  } 
+  arg3 = static_cast< faiss::HNSW::storage_idx_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "HNSW_add_links_starting_from" "', argument " "4"" of type '" "faiss::HNSW::storage_idx_t""'");
+  } 
+  arg4 = static_cast< faiss::HNSW::storage_idx_t >(val4);
+  ecode5 = SWIG_AsVal_float(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "HNSW_add_links_starting_from" "', argument " "5"" of type '" "float""'");
+  } 
+  arg5 = static_cast< float >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "HNSW_add_links_starting_from" "', argument " "6"" of type '" "int""'");
+  } 
+  arg6 = static_cast< int >(val6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_omp_lock_t, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "HNSW_add_links_starting_from" "', argument " "7"" of type '" "omp_lock_t *""'"); 
+  }
+  arg7 = reinterpret_cast< omp_lock_t * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8, SWIGTYPE_p_faiss__VisitedTable,  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "HNSW_add_links_starting_from" "', argument " "8"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  if (!argp8) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_add_links_starting_from" "', argument " "8"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::VisitedTable * >(argp8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_links_starting_from(*arg2,arg3,arg4,arg5,arg6,arg7,*arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_add_with_locks(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  faiss::DistanceComputer *arg2 = 0 ;
+  int arg3 ;
+  int arg4 ;
+  std::vector< omp_lock_t > *arg5 = 0 ;
+  faiss::VisitedTable *arg6 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_add_with_locks", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_add_with_locks" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSW_add_with_locks" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_add_with_locks" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DistanceComputer * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "HNSW_add_with_locks" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "HNSW_add_with_locks" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5, SWIGTYPE_p_std__vectorT_omp_lock_t_t,  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "HNSW_add_with_locks" "', argument " "5"" of type '" "std::vector< omp_lock_t > &""'"); 
+  }
+  if (!argp5) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_add_with_locks" "', argument " "5"" of type '" "std::vector< omp_lock_t > &""'"); 
+  }
+  arg5 = reinterpret_cast< std::vector< omp_lock_t > * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6, SWIGTYPE_p_faiss__VisitedTable,  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "HNSW_add_with_locks" "', argument " "6"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  if (!argp6) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_add_with_locks" "', argument " "6"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::VisitedTable * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_locks(*arg2,arg3,arg4,*arg5,*arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_search_from_candidates__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  faiss::DistanceComputer *arg2 = 0 ;
+  int arg3 ;
+  faiss::HNSW::idx_t *arg4 = (faiss::HNSW::idx_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  faiss::HNSW::MinimaxHeap *arg6 = 0 ;
+  faiss::VisitedTable *arg7 = 0 ;
+  faiss::HNSWStats *arg8 = 0 ;
+  int arg9 ;
+  int arg10 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  int val9 ;
+  int ecode9 = 0 ;
+  int val10 ;
+  int ecode10 = 0 ;
+  int result;
+  
+  if ((nobjs < 10) || (nobjs > 10)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_search_from_candidates" "', argument " "1"" of type '" "faiss::HNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSW_search_from_candidates" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_search_from_candidates" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DistanceComputer * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "HNSW_search_from_candidates" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "HNSW_search_from_candidates" "', argument " "4"" of type '" "faiss::HNSW::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HNSW::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "HNSW_search_from_candidates" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6, SWIGTYPE_p_faiss__HNSW__MinimaxHeap,  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "HNSW_search_from_candidates" "', argument " "6"" of type '" "faiss::HNSW::MinimaxHeap &""'"); 
+  }
+  if (!argp6) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_search_from_candidates" "', argument " "6"" of type '" "faiss::HNSW::MinimaxHeap &""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::HNSW::MinimaxHeap * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7, SWIGTYPE_p_faiss__VisitedTable,  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "HNSW_search_from_candidates" "', argument " "7"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  if (!argp7) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_search_from_candidates" "', argument " "7"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::VisitedTable * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8, SWIGTYPE_p_faiss__HNSWStats,  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "HNSW_search_from_candidates" "', argument " "8"" of type '" "faiss::HNSWStats &""'"); 
+  }
+  if (!argp8) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_search_from_candidates" "', argument " "8"" of type '" "faiss::HNSWStats &""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::HNSWStats * >(argp8);
+  ecode9 = SWIG_AsVal_int(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "HNSW_search_from_candidates" "', argument " "9"" of type '" "int""'");
+  } 
+  arg9 = static_cast< int >(val9);
+  ecode10 = SWIG_AsVal_int(swig_obj[9], &val10);
+  if (!SWIG_IsOK(ecode10)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode10), "in method '" "HNSW_search_from_candidates" "', argument " "10"" of type '" "int""'");
+  } 
+  arg10 = static_cast< int >(val10);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::HNSW const *)arg1)->search_from_candidates(*arg2,arg3,arg4,arg5,*arg6,*arg7,*arg8,arg9,arg10);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_search_from_candidates__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  faiss::DistanceComputer *arg2 = 0 ;
+  int arg3 ;
+  faiss::HNSW::idx_t *arg4 = (faiss::HNSW::idx_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  faiss::HNSW::MinimaxHeap *arg6 = 0 ;
+  faiss::VisitedTable *arg7 = 0 ;
+  faiss::HNSWStats *arg8 = 0 ;
+  int arg9 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  int val9 ;
+  int ecode9 = 0 ;
+  int result;
+  
+  if ((nobjs < 9) || (nobjs > 9)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_search_from_candidates" "', argument " "1"" of type '" "faiss::HNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSW_search_from_candidates" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_search_from_candidates" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DistanceComputer * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "HNSW_search_from_candidates" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "HNSW_search_from_candidates" "', argument " "4"" of type '" "faiss::HNSW::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HNSW::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "HNSW_search_from_candidates" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6, SWIGTYPE_p_faiss__HNSW__MinimaxHeap,  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "HNSW_search_from_candidates" "', argument " "6"" of type '" "faiss::HNSW::MinimaxHeap &""'"); 
+  }
+  if (!argp6) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_search_from_candidates" "', argument " "6"" of type '" "faiss::HNSW::MinimaxHeap &""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::HNSW::MinimaxHeap * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7, SWIGTYPE_p_faiss__VisitedTable,  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "HNSW_search_from_candidates" "', argument " "7"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  if (!argp7) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_search_from_candidates" "', argument " "7"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::VisitedTable * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8, SWIGTYPE_p_faiss__HNSWStats,  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "HNSW_search_from_candidates" "', argument " "8"" of type '" "faiss::HNSWStats &""'"); 
+  }
+  if (!argp8) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_search_from_candidates" "', argument " "8"" of type '" "faiss::HNSWStats &""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::HNSWStats * >(argp8);
+  ecode9 = SWIG_AsVal_int(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "HNSW_search_from_candidates" "', argument " "9"" of type '" "int""'");
+  } 
+  arg9 = static_cast< int >(val9);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::HNSW const *)arg1)->search_from_candidates(*arg2,arg3,arg4,arg5,*arg6,*arg7,*arg8,arg9);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_search_from_candidates(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[11] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "HNSW_search_from_candidates", 0, 10, argv))) SWIG_fail;
+  --argc;
+  if (argc == 9) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HNSW, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__DistanceComputer, SWIG_POINTER_NO_NULL);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_faiss__HNSW__MinimaxHeap, SWIG_POINTER_NO_NULL);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_faiss__VisitedTable, SWIG_POINTER_NO_NULL);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_faiss__HNSWStats, SWIG_POINTER_NO_NULL);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_int(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      return _wrap_HNSW_search_from_candidates__SWIG_1(self, argc, argv);
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 10) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HNSW, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__DistanceComputer, SWIG_POINTER_NO_NULL);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_faiss__HNSW__MinimaxHeap, SWIG_POINTER_NO_NULL);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_faiss__VisitedTable, SWIG_POINTER_NO_NULL);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_faiss__HNSWStats, SWIG_POINTER_NO_NULL);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_int(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      {
+                        int res = SWIG_AsVal_int(argv[9], NULL);
+                        _v = SWIG_CheckState(res);
+                      }
+                      if (_v) {
+                        return _wrap_HNSW_search_from_candidates__SWIG_0(self, argc, argv);
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'HNSW_search_from_candidates'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::HNSW::search_from_candidates(faiss::DistanceComputer &,int,faiss::HNSW::idx_t *,float *,faiss::HNSW::MinimaxHeap &,faiss::VisitedTable &,faiss::HNSWStats &,int,int) const\n"
+    "    faiss::HNSW::search_from_candidates(faiss::DistanceComputer &,int,faiss::HNSW::idx_t *,float *,faiss::HNSW::MinimaxHeap &,faiss::VisitedTable &,faiss::HNSWStats &,int) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_search_from_candidate_unbounded(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  faiss::HNSW::Node *arg2 = 0 ;
+  faiss::DistanceComputer *arg3 = 0 ;
+  int arg4 ;
+  faiss::VisitedTable *arg5 = (faiss::VisitedTable *) 0 ;
+  faiss::HNSWStats *arg6 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  std::priority_queue< faiss::HNSW::Node > result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_search_from_candidate_unbounded", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_search_from_candidate_unbounded" "', argument " "1"" of type '" "faiss::HNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__pairT_float_int_t,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSW_search_from_candidate_unbounded" "', argument " "2"" of type '" "faiss::HNSW::Node const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_search_from_candidate_unbounded" "', argument " "2"" of type '" "faiss::HNSW::Node const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HNSW::Node * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "HNSW_search_from_candidate_unbounded" "', argument " "3"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_search_from_candidate_unbounded" "', argument " "3"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::DistanceComputer * >(argp3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "HNSW_search_from_candidate_unbounded" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__VisitedTable, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "HNSW_search_from_candidate_unbounded" "', argument " "5"" of type '" "faiss::VisitedTable *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::VisitedTable * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6, SWIGTYPE_p_faiss__HNSWStats,  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "HNSW_search_from_candidate_unbounded" "', argument " "6"" of type '" "faiss::HNSWStats &""'"); 
+  }
+  if (!argp6) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_search_from_candidate_unbounded" "', argument " "6"" of type '" "faiss::HNSWStats &""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::HNSWStats * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::HNSW const *)arg1)->search_from_candidate_unbounded((faiss::HNSW::Node const &)*arg2,*arg3,arg4,arg5,*arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::priority_queue< faiss::HNSW::Node >(static_cast< const std::priority_queue< faiss::HNSW::Node >& >(result))), SWIGTYPE_p_std__priority_queueT_std__pairT_float_int_t_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  faiss::DistanceComputer *arg2 = 0 ;
+  int arg3 ;
+  faiss::HNSW::idx_t *arg4 = (faiss::HNSW::idx_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  faiss::VisitedTable *arg6 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  faiss::HNSWStats result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_search" "', argument " "1"" of type '" "faiss::HNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSW_search" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_search" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DistanceComputer * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "HNSW_search" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "HNSW_search" "', argument " "4"" of type '" "faiss::HNSW::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HNSW::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "HNSW_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6, SWIGTYPE_p_faiss__VisitedTable,  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "HNSW_search" "', argument " "6"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  if (!argp6) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_search" "', argument " "6"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::VisitedTable * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::HNSW const *)arg1)->search(*arg2,arg3,arg4,arg5,*arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new faiss::HNSWStats(static_cast< const faiss::HNSWStats& >(result))), SWIGTYPE_p_faiss__HNSWStats, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_reset" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_clear_neighbor_tables(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_clear_neighbor_tables", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_clear_neighbor_tables" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_clear_neighbor_tables" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear_neighbor_tables(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_print_neighbor_stats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_print_neighbor_stats", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_print_neighbor_stats" "', argument " "1"" of type '" "faiss::HNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_print_neighbor_stats" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::HNSW const *)arg1)->print_neighbor_stats(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_prepare_level_tab__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  size_t arg2 ;
+  bool arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  int result;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_prepare_level_tab" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_prepare_level_tab" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "HNSW_prepare_level_tab" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)(arg1)->prepare_level_tab(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_prepare_level_tab__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  int result;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_prepare_level_tab" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSW_prepare_level_tab" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)(arg1)->prepare_level_tab(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_prepare_level_tab(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "HNSW_prepare_level_tab", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HNSW, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_HNSW_prepare_level_tab__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HNSW, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_HNSW_prepare_level_tab__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'HNSW_prepare_level_tab'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::HNSW::prepare_level_tab(size_t,bool)\n"
+    "    faiss::HNSW::prepare_level_tab(size_t)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSW_shrink_neighbor_list(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DistanceComputer *arg1 = 0 ;
+  std::priority_queue< faiss::HNSW::NodeDistFarther > *arg2 = 0 ;
+  std::vector< faiss::HNSW::NodeDistFarther > *arg3 = 0 ;
+  int arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSW_shrink_neighbor_list", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSW_shrink_neighbor_list" "', argument " "1"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_shrink_neighbor_list" "', argument " "1"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DistanceComputer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__priority_queueT_faiss__HNSW__NodeDistFarther_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSW_shrink_neighbor_list" "', argument " "2"" of type '" "std::priority_queue< faiss::HNSW::NodeDistFarther > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_shrink_neighbor_list" "', argument " "2"" of type '" "std::priority_queue< faiss::HNSW::NodeDistFarther > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::priority_queue< faiss::HNSW::NodeDistFarther > * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_std__vectorT_faiss__HNSW__NodeDistFarther_t,  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "HNSW_shrink_neighbor_list" "', argument " "3"" of type '" "std::vector< faiss::HNSW::NodeDistFarther > &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSW_shrink_neighbor_list" "', argument " "3"" of type '" "std::vector< faiss::HNSW::NodeDistFarther > &""'"); 
+  }
+  arg3 = reinterpret_cast< std::vector< faiss::HNSW::NodeDistFarther > * >(argp3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "HNSW_shrink_neighbor_list" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::HNSW::shrink_neighbor_list(*arg1,*arg2,*arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_HNSW(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSW *arg1 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSW, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_HNSW" "', argument " "1"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSW * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *HNSW_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__HNSW, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *HNSW_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_HNSWStats_n1_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *arg1 = (faiss::HNSWStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSWStats_n1_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSWStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSWStats_n1_set" "', argument " "1"" of type '" "faiss::HNSWStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSWStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSWStats_n1_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->n1 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSWStats_n1_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *arg1 = (faiss::HNSWStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSWStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSWStats_n1_get" "', argument " "1"" of type '" "faiss::HNSWStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSWStats * >(argp1);
+  result = (size_t) ((arg1)->n1);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSWStats_n2_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *arg1 = (faiss::HNSWStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSWStats_n2_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSWStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSWStats_n2_set" "', argument " "1"" of type '" "faiss::HNSWStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSWStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSWStats_n2_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->n2 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSWStats_n2_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *arg1 = (faiss::HNSWStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSWStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSWStats_n2_get" "', argument " "1"" of type '" "faiss::HNSWStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSWStats * >(argp1);
+  result = (size_t) ((arg1)->n2);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSWStats_n3_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *arg1 = (faiss::HNSWStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSWStats_n3_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSWStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSWStats_n3_set" "', argument " "1"" of type '" "faiss::HNSWStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSWStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSWStats_n3_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->n3 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSWStats_n3_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *arg1 = (faiss::HNSWStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSWStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSWStats_n3_get" "', argument " "1"" of type '" "faiss::HNSWStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSWStats * >(argp1);
+  result = (size_t) ((arg1)->n3);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSWStats_ndis_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *arg1 = (faiss::HNSWStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSWStats_ndis_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSWStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSWStats_ndis_set" "', argument " "1"" of type '" "faiss::HNSWStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSWStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSWStats_ndis_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->ndis = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSWStats_ndis_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *arg1 = (faiss::HNSWStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSWStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSWStats_ndis_get" "', argument " "1"" of type '" "faiss::HNSWStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSWStats * >(argp1);
+  result = (size_t) ((arg1)->ndis);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSWStats_nreorder_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *arg1 = (faiss::HNSWStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSWStats_nreorder_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSWStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSWStats_nreorder_set" "', argument " "1"" of type '" "faiss::HNSWStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSWStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "HNSWStats_nreorder_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nreorder = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSWStats_nreorder_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *arg1 = (faiss::HNSWStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSWStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSWStats_nreorder_get" "', argument " "1"" of type '" "faiss::HNSWStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSWStats * >(argp1);
+  result = (size_t) ((arg1)->nreorder);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_HNSWStats__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  faiss::HNSWStats *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_HNSWStats" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_HNSWStats" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_HNSWStats" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_HNSWStats" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_HNSWStats" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::HNSWStats *)new faiss::HNSWStats(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HNSWStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_HNSWStats__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  faiss::HNSWStats *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_HNSWStats" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_HNSWStats" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_HNSWStats" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_HNSWStats" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::HNSWStats *)new faiss::HNSWStats(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HNSWStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_HNSWStats__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::HNSWStats *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_HNSWStats" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_HNSWStats" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_HNSWStats" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::HNSWStats *)new faiss::HNSWStats(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HNSWStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_HNSWStats__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  faiss::HNSWStats *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_HNSWStats" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_HNSWStats" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::HNSWStats *)new faiss::HNSWStats(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HNSWStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_HNSWStats__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  faiss::HNSWStats *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_HNSWStats" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::HNSWStats *)new faiss::HNSWStats(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HNSWStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_HNSWStats__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::HNSWStats *)new faiss::HNSWStats();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HNSWStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_HNSWStats(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_HNSWStats", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_HNSWStats__SWIG_5(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_HNSWStats__SWIG_4(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_HNSWStats__SWIG_3(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_HNSWStats__SWIG_2(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_HNSWStats__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_HNSWStats__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_HNSWStats'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::HNSWStats::HNSWStats(size_t,size_t,size_t,size_t,size_t)\n"
+    "    faiss::HNSWStats::HNSWStats(size_t,size_t,size_t,size_t)\n"
+    "    faiss::HNSWStats::HNSWStats(size_t,size_t,size_t)\n"
+    "    faiss::HNSWStats::HNSWStats(size_t,size_t)\n"
+    "    faiss::HNSWStats::HNSWStats(size_t)\n"
+    "    faiss::HNSWStats::HNSWStats()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSWStats_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *arg1 = (faiss::HNSWStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSWStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSWStats_reset" "', argument " "1"" of type '" "faiss::HNSWStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSWStats * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_HNSWStats_combine(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *arg1 = (faiss::HNSWStats *) 0 ;
+  faiss::HNSWStats *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "HNSWStats_combine", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSWStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "HNSWStats_combine" "', argument " "1"" of type '" "faiss::HNSWStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSWStats * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__HNSWStats,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "HNSWStats_combine" "', argument " "2"" of type '" "faiss::HNSWStats const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "HNSWStats_combine" "', argument " "2"" of type '" "faiss::HNSWStats const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HNSWStats * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->combine((faiss::HNSWStats const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_HNSWStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HNSWStats *arg1 = (faiss::HNSWStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HNSWStats, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_HNSWStats" "', argument " "1"" of type '" "faiss::HNSWStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HNSWStats * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *HNSWStats_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__HNSWStats, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *HNSWStats_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN int Swig_var_hnsw_stats_set(PyObject *_val) {
+  {
+    void *argp = 0;
+    int res = SWIG_ConvertPtr(_val, &argp, SWIGTYPE_p_faiss__HNSWStats,  0  | 0);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::hnsw_stats""' of type '""faiss::HNSWStats""'");
+    }
+    if (!argp) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in variable '""faiss::hnsw_stats""' of type '""faiss::HNSWStats""'");
+    } else {
+      faiss::HNSWStats * temp;
+      temp  = reinterpret_cast< faiss::HNSWStats * >(argp);
+      faiss::hnsw_stats = *temp;
+      if (SWIG_IsNewObj(res)) delete temp;
+    }
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_hnsw_stats_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_NewPointerObj(SWIG_as_voidptr(&faiss::hnsw_stats), SWIGTYPE_p_faiss__HNSWStats,  0 );
+  return pyobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_index_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IndexHNSW *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_index_get" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  result = (faiss::IndexHNSW *) &(faiss::IndexHNSW const &) ((arg1)->index);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_M_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_M_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_M_set" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReconstructFromNeighbors_M_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->M = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_M_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_M_get" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  result = (size_t) ((arg1)->M);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_k_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_k_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_k_set" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReconstructFromNeighbors_k_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->k = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_k_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_k_get" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  result = (size_t) ((arg1)->k);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_nsq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_nsq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_nsq_set" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReconstructFromNeighbors_nsq_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nsq = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_nsq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_nsq_get" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  result = (size_t) ((arg1)->nsq);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_code_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_code_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_code_size_set" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReconstructFromNeighbors_code_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->code_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_code_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_code_size_get" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  result = (size_t) ((arg1)->code_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_k_reorder_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_k_reorder_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_k_reorder_set" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReconstructFromNeighbors_k_reorder_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->k_reorder = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_k_reorder_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_k_reorder_get" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  result = (int) ((arg1)->k_reorder);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_codebook_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_codebook_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_codebook_set" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ReconstructFromNeighbors_codebook_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->codebook = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_codebook_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_codebook_get" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->codebook);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_codes_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  std::vector< uint8_t > *arg2 = (std::vector< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_codes_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_codes_set" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ReconstructFromNeighbors_codes_set" "', argument " "2"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< uint8_t > * >(argp2);
+  if (arg1) (arg1)->codes = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_codes_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< uint8_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_codes_get" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  result = (std::vector< uint8_t > *)& ((arg1)->codes);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_ntotal_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_ntotal_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_ntotal_set" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReconstructFromNeighbors_ntotal_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->ntotal = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_ntotal_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_ntotal_get" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  result = (size_t) ((arg1)->ntotal);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_d_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_d_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_d_set" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReconstructFromNeighbors_d_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->d = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_d_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_d_get" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  result = (size_t) ((arg1)->d);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_dsub_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_dsub_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_dsub_set" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReconstructFromNeighbors_dsub_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->dsub = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_dsub_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_dsub_get" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  result = (size_t) ((arg1)->dsub);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ReconstructFromNeighbors__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::ReconstructFromNeighbors *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_faiss__IndexHNSW,  0  | 0);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_ReconstructFromNeighbors" "', argument " "1"" of type '" "faiss::IndexHNSW const &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ReconstructFromNeighbors" "', argument " "1"" of type '" "faiss::IndexHNSW const &""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ReconstructFromNeighbors" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_ReconstructFromNeighbors" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ReconstructFromNeighbors *)new faiss::ReconstructFromNeighbors((faiss::IndexHNSW const &)*arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ReconstructFromNeighbors, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ReconstructFromNeighbors__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  faiss::ReconstructFromNeighbors *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_faiss__IndexHNSW,  0  | 0);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_ReconstructFromNeighbors" "', argument " "1"" of type '" "faiss::IndexHNSW const &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ReconstructFromNeighbors" "', argument " "1"" of type '" "faiss::IndexHNSW const &""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ReconstructFromNeighbors" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ReconstructFromNeighbors *)new faiss::ReconstructFromNeighbors((faiss::IndexHNSW const &)*arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ReconstructFromNeighbors, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ReconstructFromNeighbors__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::ReconstructFromNeighbors *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_faiss__IndexHNSW,  0  | 0);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_ReconstructFromNeighbors" "', argument " "1"" of type '" "faiss::IndexHNSW const &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ReconstructFromNeighbors" "', argument " "1"" of type '" "faiss::IndexHNSW const &""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ReconstructFromNeighbors *)new faiss::ReconstructFromNeighbors((faiss::IndexHNSW const &)*arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ReconstructFromNeighbors, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ReconstructFromNeighbors(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_ReconstructFromNeighbors", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_faiss__IndexHNSW, SWIG_POINTER_NO_NULL | 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_ReconstructFromNeighbors__SWIG_2(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_faiss__IndexHNSW, SWIG_POINTER_NO_NULL | 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_ReconstructFromNeighbors__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_faiss__IndexHNSW, SWIG_POINTER_NO_NULL | 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_ReconstructFromNeighbors__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_ReconstructFromNeighbors'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ReconstructFromNeighbors::ReconstructFromNeighbors(faiss::IndexHNSW const &,size_t,size_t)\n"
+    "    faiss::ReconstructFromNeighbors::ReconstructFromNeighbors(faiss::IndexHNSW const &,size_t)\n"
+    "    faiss::ReconstructFromNeighbors::ReconstructFromNeighbors(faiss::IndexHNSW const &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_add_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_add_codes", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_add_codes" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReconstructFromNeighbors_add_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ReconstructFromNeighbors_add_codes" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_codes(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_compute_distances(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  size_t arg2 ;
+  faiss::ReconstructFromNeighbors::idx_t *arg3 = (faiss::ReconstructFromNeighbors::idx_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  float *arg5 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_compute_distances", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_compute_distances" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReconstructFromNeighbors_compute_distances" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ReconstructFromNeighbors_compute_distances" "', argument " "3"" of type '" "faiss::ReconstructFromNeighbors::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::ReconstructFromNeighbors::idx_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ReconstructFromNeighbors_compute_distances" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "ReconstructFromNeighbors_compute_distances" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::ReconstructFromNeighbors const *)arg1)->compute_distances(arg2,(faiss::ReconstructFromNeighbors::idx_t const *)arg3,(float const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_estimate_code(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  float *arg2 = (float *) 0 ;
+  faiss::ReconstructFromNeighbors::storage_idx_t arg3 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_estimate_code", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_estimate_code" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ReconstructFromNeighbors_estimate_code" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ReconstructFromNeighbors_estimate_code" "', argument " "3"" of type '" "faiss::ReconstructFromNeighbors::storage_idx_t""'");
+  } 
+  arg3 = static_cast< faiss::ReconstructFromNeighbors::storage_idx_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ReconstructFromNeighbors_estimate_code" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ReconstructFromNeighbors const *)arg1)->estimate_code((float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  faiss::ReconstructFromNeighbors::storage_idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_reconstruct", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_reconstruct" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReconstructFromNeighbors_reconstruct" "', argument " "2"" of type '" "faiss::ReconstructFromNeighbors::storage_idx_t""'");
+  } 
+  arg2 = static_cast< faiss::ReconstructFromNeighbors::storage_idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ReconstructFromNeighbors_reconstruct" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ReconstructFromNeighbors_reconstruct" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ReconstructFromNeighbors const *)arg1)->reconstruct(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_reconstruct_n(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  faiss::ReconstructFromNeighbors::storage_idx_t arg2 ;
+  faiss::ReconstructFromNeighbors::storage_idx_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_reconstruct_n", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_reconstruct_n" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReconstructFromNeighbors_reconstruct_n" "', argument " "2"" of type '" "faiss::ReconstructFromNeighbors::storage_idx_t""'");
+  } 
+  arg2 = static_cast< faiss::ReconstructFromNeighbors::storage_idx_t >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ReconstructFromNeighbors_reconstruct_n" "', argument " "3"" of type '" "faiss::ReconstructFromNeighbors::storage_idx_t""'");
+  } 
+  arg3 = static_cast< faiss::ReconstructFromNeighbors::storage_idx_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ReconstructFromNeighbors_reconstruct_n" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ReconstructFromNeighbors const *)arg1)->reconstruct_n(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ReconstructFromNeighbors_get_neighbor_table(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  faiss::ReconstructFromNeighbors::storage_idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ReconstructFromNeighbors_get_neighbor_table", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ReconstructFromNeighbors_get_neighbor_table" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ReconstructFromNeighbors_get_neighbor_table" "', argument " "2"" of type '" "faiss::ReconstructFromNeighbors::storage_idx_t""'");
+  } 
+  arg2 = static_cast< faiss::ReconstructFromNeighbors::storage_idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ReconstructFromNeighbors_get_neighbor_table" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ReconstructFromNeighbors const *)arg1)->get_neighbor_table(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ReconstructFromNeighbors(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ReconstructFromNeighbors *arg1 = (faiss::ReconstructFromNeighbors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ReconstructFromNeighbors, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ReconstructFromNeighbors" "', argument " "1"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ReconstructFromNeighbors_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ReconstructFromNeighbors, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ReconstructFromNeighbors_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_hnsw_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  faiss::HNSW *arg2 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexHNSW_hnsw_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_hnsw_set" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexHNSW_hnsw_set" "', argument " "2"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HNSW * >(argp2);
+  if (arg1) (arg1)->hnsw = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_hnsw_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::HNSW *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_hnsw_get" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  result = (faiss::HNSW *)& ((arg1)->hnsw);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexHNSW_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_own_fields_set" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexHNSW_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_own_fields_get" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_storage_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexHNSW_storage_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_storage_set" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexHNSW_storage_set" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  if (arg1) (arg1)->storage = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_storage_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_storage_get" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  result = (faiss::Index *) ((arg1)->storage);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_reconstruct_from_neighbors_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  faiss::ReconstructFromNeighbors *arg2 = (faiss::ReconstructFromNeighbors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexHNSW_reconstruct_from_neighbors_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_reconstruct_from_neighbors_set" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ReconstructFromNeighbors, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexHNSW_reconstruct_from_neighbors_set" "', argument " "2"" of type '" "faiss::ReconstructFromNeighbors *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ReconstructFromNeighbors * >(argp2);
+  if (arg1) (arg1)->reconstruct_from_neighbors = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_reconstruct_from_neighbors_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ReconstructFromNeighbors *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_reconstruct_from_neighbors_get" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  result = (faiss::ReconstructFromNeighbors *) ((arg1)->reconstruct_from_neighbors);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ReconstructFromNeighbors, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSW__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  faiss::MetricType arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexHNSW *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexHNSW" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexHNSW" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexHNSW" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSW *)new faiss::IndexHNSW(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSW, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSW__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexHNSW *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexHNSW" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexHNSW" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSW *)new faiss::IndexHNSW(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSW, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSW__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexHNSW *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexHNSW" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSW *)new faiss::IndexHNSW(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSW, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSW__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSW *)new faiss::IndexHNSW();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSW, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSW__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexHNSW *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexHNSW" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexHNSW" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSW *)new faiss::IndexHNSW(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSW, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSW__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexHNSW *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexHNSW" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSW *)new faiss::IndexHNSW(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSW, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSW(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexHNSW", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexHNSW__SWIG_3(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexHNSW__SWIG_5(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexHNSW__SWIG_2(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexHNSW__SWIG_4(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexHNSW__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexHNSW__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexHNSW'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexHNSW::IndexHNSW(int,int,faiss::MetricType)\n"
+    "    faiss::IndexHNSW::IndexHNSW(int,int)\n"
+    "    faiss::IndexHNSW::IndexHNSW(int)\n"
+    "    faiss::IndexHNSW::IndexHNSW()\n"
+    "    faiss::IndexHNSW::IndexHNSW(faiss::Index *,int)\n"
+    "    faiss::IndexHNSW::IndexHNSW(faiss::Index *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexHNSW(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexHNSW" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexHNSW_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_add" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexHNSW_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexHNSW_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexHNSW_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_train" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexHNSW_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexHNSW_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexHNSW_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_search" "', argument " "1"" of type '" "faiss::IndexHNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexHNSW_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexHNSW_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexHNSW_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexHNSW_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexHNSW_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexHNSW const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexHNSW_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_reconstruct" "', argument " "1"" of type '" "faiss::IndexHNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexHNSW_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexHNSW_reconstruct" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexHNSW const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_reset" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_shrink_level_0_neighbors(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexHNSW_shrink_level_0_neighbors", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_shrink_level_0_neighbors" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexHNSW_shrink_level_0_neighbors" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->shrink_level_0_neighbors(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_search_level_0__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  faiss::IndexHNSW::storage_idx_t *arg5 = (faiss::IndexHNSW::storage_idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  float *arg7 = (float *) 0 ;
+  faiss::Index::idx_t *arg8 = (faiss::Index::idx_t *) 0 ;
+  int arg9 ;
+  int arg10 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  int val9 ;
+  int ecode9 = 0 ;
+  int val10 ;
+  int ecode10 = 0 ;
+  
+  if ((nobjs < 10) || (nobjs > 10)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_search_level_0" "', argument " "1"" of type '" "faiss::IndexHNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexHNSW_search_level_0" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexHNSW_search_level_0" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexHNSW_search_level_0" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexHNSW_search_level_0" "', argument " "5"" of type '" "faiss::IndexHNSW::storage_idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::IndexHNSW::storage_idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexHNSW_search_level_0" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexHNSW_search_level_0" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexHNSW_search_level_0" "', argument " "8"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::Index::idx_t * >(argp8);
+  ecode9 = SWIG_AsVal_int(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "IndexHNSW_search_level_0" "', argument " "9"" of type '" "int""'");
+  } 
+  arg9 = static_cast< int >(val9);
+  ecode10 = SWIG_AsVal_int(swig_obj[9], &val10);
+  if (!SWIG_IsOK(ecode10)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode10), "in method '" "IndexHNSW_search_level_0" "', argument " "10"" of type '" "int""'");
+  } 
+  arg10 = static_cast< int >(val10);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexHNSW const *)arg1)->search_level_0(arg2,(float const *)arg3,arg4,(faiss::IndexHNSW::storage_idx_t const *)arg5,(float const *)arg6,arg7,arg8,arg9,arg10);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_search_level_0__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  faiss::IndexHNSW::storage_idx_t *arg5 = (faiss::IndexHNSW::storage_idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  float *arg7 = (float *) 0 ;
+  faiss::Index::idx_t *arg8 = (faiss::Index::idx_t *) 0 ;
+  int arg9 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  int val9 ;
+  int ecode9 = 0 ;
+  
+  if ((nobjs < 9) || (nobjs > 9)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_search_level_0" "', argument " "1"" of type '" "faiss::IndexHNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexHNSW_search_level_0" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexHNSW_search_level_0" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexHNSW_search_level_0" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexHNSW_search_level_0" "', argument " "5"" of type '" "faiss::IndexHNSW::storage_idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::IndexHNSW::storage_idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexHNSW_search_level_0" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexHNSW_search_level_0" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexHNSW_search_level_0" "', argument " "8"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::Index::idx_t * >(argp8);
+  ecode9 = SWIG_AsVal_int(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "IndexHNSW_search_level_0" "', argument " "9"" of type '" "int""'");
+  } 
+  arg9 = static_cast< int >(val9);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexHNSW const *)arg1)->search_level_0(arg2,(float const *)arg3,arg4,(faiss::IndexHNSW::storage_idx_t const *)arg5,(float const *)arg6,arg7,arg8,arg9);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_search_level_0__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  faiss::IndexHNSW::storage_idx_t *arg5 = (faiss::IndexHNSW::storage_idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  float *arg7 = (float *) 0 ;
+  faiss::Index::idx_t *arg8 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  
+  if ((nobjs < 8) || (nobjs > 8)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_search_level_0" "', argument " "1"" of type '" "faiss::IndexHNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexHNSW_search_level_0" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexHNSW_search_level_0" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexHNSW_search_level_0" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexHNSW_search_level_0" "', argument " "5"" of type '" "faiss::IndexHNSW::storage_idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::IndexHNSW::storage_idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexHNSW_search_level_0" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexHNSW_search_level_0" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexHNSW_search_level_0" "', argument " "8"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::Index::idx_t * >(argp8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexHNSW const *)arg1)->search_level_0(arg2,(float const *)arg3,arg4,(faiss::IndexHNSW::storage_idx_t const *)arg5,(float const *)arg6,arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_search_level_0(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[11] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexHNSW_search_level_0", 0, 10, argv))) SWIG_fail;
+  --argc;
+  if (argc == 8) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexHNSW, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_int, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    return _wrap_IndexHNSW_search_level_0__SWIG_2(self, argc, argv);
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 9) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexHNSW, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_int, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_int(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      return _wrap_IndexHNSW_search_level_0__SWIG_1(self, argc, argv);
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 10) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexHNSW, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_int, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_int(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      {
+                        int res = SWIG_AsVal_int(argv[9], NULL);
+                        _v = SWIG_CheckState(res);
+                      }
+                      if (_v) {
+                        return _wrap_IndexHNSW_search_level_0__SWIG_0(self, argc, argv);
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexHNSW_search_level_0'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexHNSW::search_level_0(faiss::Index::idx_t,float const *,faiss::Index::idx_t,faiss::IndexHNSW::storage_idx_t const *,float const *,float *,faiss::Index::idx_t *,int,int) const\n"
+    "    faiss::IndexHNSW::search_level_0(faiss::Index::idx_t,float const *,faiss::Index::idx_t,faiss::IndexHNSW::storage_idx_t const *,float const *,float *,faiss::Index::idx_t *,int) const\n"
+    "    faiss::IndexHNSW::search_level_0(faiss::Index::idx_t,float const *,faiss::Index::idx_t,faiss::IndexHNSW::storage_idx_t const *,float const *,float *,faiss::Index::idx_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_init_level_0_from_knngraph(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  int arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexHNSW_init_level_0_from_knngraph", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_init_level_0_from_knngraph" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexHNSW_init_level_0_from_knngraph" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexHNSW_init_level_0_from_knngraph" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexHNSW_init_level_0_from_knngraph" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->init_level_0_from_knngraph(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_init_level_0_from_entry_points(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  int arg2 ;
+  faiss::IndexHNSW::storage_idx_t *arg3 = (faiss::IndexHNSW::storage_idx_t *) 0 ;
+  faiss::IndexHNSW::storage_idx_t *arg4 = (faiss::IndexHNSW::storage_idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexHNSW_init_level_0_from_entry_points", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_init_level_0_from_entry_points" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexHNSW_init_level_0_from_entry_points" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexHNSW_init_level_0_from_entry_points" "', argument " "3"" of type '" "faiss::IndexHNSW::storage_idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexHNSW::storage_idx_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexHNSW_init_level_0_from_entry_points" "', argument " "4"" of type '" "faiss::IndexHNSW::storage_idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::IndexHNSW::storage_idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->init_level_0_from_entry_points(arg2,(faiss::IndexHNSW::storage_idx_t const *)arg3,(faiss::IndexHNSW::storage_idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_reorder_links(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_reorder_links" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reorder_links();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW_link_singletons(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW *arg1 = (faiss::IndexHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW_link_singletons" "', argument " "1"" of type '" "faiss::IndexHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->link_singletons();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexHNSW_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexHNSW, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexHNSW_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSWFlat__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSWFlat *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSWFlat *)new faiss::IndexHNSWFlat();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSWFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSWFlat__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  faiss::MetricType arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexHNSWFlat *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexHNSWFlat" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexHNSWFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexHNSWFlat" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSWFlat *)new faiss::IndexHNSWFlat(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSWFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSWFlat__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexHNSWFlat *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexHNSWFlat" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexHNSWFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSWFlat *)new faiss::IndexHNSWFlat(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSWFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSWFlat(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexHNSWFlat", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexHNSWFlat__SWIG_0(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexHNSWFlat__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexHNSWFlat__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexHNSWFlat'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexHNSWFlat::IndexHNSWFlat()\n"
+    "    faiss::IndexHNSWFlat::IndexHNSWFlat(int,int,faiss::MetricType)\n"
+    "    faiss::IndexHNSWFlat::IndexHNSWFlat(int,int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexHNSWFlat(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSWFlat *arg1 = (faiss::IndexHNSWFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSWFlat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexHNSWFlat" "', argument " "1"" of type '" "faiss::IndexHNSWFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSWFlat * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexHNSWFlat_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexHNSWFlat, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexHNSWFlat_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSWPQ__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSWPQ *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSWPQ *)new faiss::IndexHNSWPQ();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSWPQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSWPQ__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexHNSWPQ *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexHNSWPQ" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexHNSWPQ" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexHNSWPQ" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSWPQ *)new faiss::IndexHNSWPQ(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSWPQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSWPQ(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexHNSWPQ", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexHNSWPQ__SWIG_0(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexHNSWPQ__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexHNSWPQ'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexHNSWPQ::IndexHNSWPQ()\n"
+    "    faiss::IndexHNSWPQ::IndexHNSWPQ(int,int,int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSWPQ_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSWPQ *arg1 = (faiss::IndexHNSWPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexHNSWPQ_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSWPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSWPQ_train" "', argument " "1"" of type '" "faiss::IndexHNSWPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSWPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexHNSWPQ_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexHNSWPQ_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexHNSWPQ(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSWPQ *arg1 = (faiss::IndexHNSWPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSWPQ, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexHNSWPQ" "', argument " "1"" of type '" "faiss::IndexHNSWPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSWPQ * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexHNSWPQ_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexHNSWPQ, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexHNSWPQ_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSWSQ__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSWSQ *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSWSQ *)new faiss::IndexHNSWSQ();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSWSQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSWSQ__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  faiss::ScalarQuantizer::QuantizerType arg2 ;
+  int arg3 ;
+  faiss::MetricType arg4 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::IndexHNSWSQ *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexHNSWSQ" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexHNSWSQ" "', argument " "2"" of type '" "faiss::ScalarQuantizer::QuantizerType""'");
+  } 
+  arg2 = static_cast< faiss::ScalarQuantizer::QuantizerType >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexHNSWSQ" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexHNSWSQ" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSWSQ *)new faiss::IndexHNSWSQ(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSWSQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSWSQ__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  faiss::ScalarQuantizer::QuantizerType arg2 ;
+  int arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexHNSWSQ *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexHNSWSQ" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexHNSWSQ" "', argument " "2"" of type '" "faiss::ScalarQuantizer::QuantizerType""'");
+  } 
+  arg2 = static_cast< faiss::ScalarQuantizer::QuantizerType >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexHNSWSQ" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSWSQ *)new faiss::IndexHNSWSQ(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSWSQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSWSQ(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexHNSWSQ", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexHNSWSQ__SWIG_0(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexHNSWSQ__SWIG_2(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_IndexHNSWSQ__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexHNSWSQ'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexHNSWSQ::IndexHNSWSQ()\n"
+    "    faiss::IndexHNSWSQ::IndexHNSWSQ(int,faiss::ScalarQuantizer::QuantizerType,int,faiss::MetricType)\n"
+    "    faiss::IndexHNSWSQ::IndexHNSWSQ(int,faiss::ScalarQuantizer::QuantizerType,int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexHNSWSQ(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSWSQ *arg1 = (faiss::IndexHNSWSQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSWSQ, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexHNSWSQ" "', argument " "1"" of type '" "faiss::IndexHNSWSQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSWSQ * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexHNSWSQ_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexHNSWSQ, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexHNSWSQ_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSW2Level__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW2Level *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSW2Level *)new faiss::IndexHNSW2Level();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSW2Level, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSW2Level__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  int arg3 ;
+  int arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::IndexHNSW2Level *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexHNSW2Level" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexHNSW2Level" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexHNSW2Level" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexHNSW2Level" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexHNSW2Level *)new faiss::IndexHNSW2Level(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexHNSW2Level, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexHNSW2Level(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexHNSW2Level", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexHNSW2Level__SWIG_0(self, argc, argv);
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_IndexHNSW2Level__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexHNSW2Level'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexHNSW2Level::IndexHNSW2Level()\n"
+    "    faiss::IndexHNSW2Level::IndexHNSW2Level(faiss::Index *,size_t,int,int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW2Level_flip_to_ivf(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW2Level *arg1 = (faiss::IndexHNSW2Level *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW2Level, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW2Level_flip_to_ivf" "', argument " "1"" of type '" "faiss::IndexHNSW2Level *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW2Level * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->flip_to_ivf();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexHNSW2Level_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW2Level *arg1 = (faiss::IndexHNSW2Level *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexHNSW2Level_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW2Level, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexHNSW2Level_search" "', argument " "1"" of type '" "faiss::IndexHNSW2Level const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW2Level * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexHNSW2Level_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexHNSW2Level_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexHNSW2Level_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexHNSW2Level_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexHNSW2Level_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexHNSW2Level const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexHNSW2Level(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexHNSW2Level *arg1 = (faiss::IndexHNSW2Level *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexHNSW2Level, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexHNSW2Level" "', argument " "1"" of type '" "faiss::IndexHNSW2Level *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexHNSW2Level * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexHNSW2Level_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexHNSW2Level, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexHNSW2Level_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_smawk(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "smawk", 4, 4, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "smawk" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "smawk" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "smawk" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "smawk" "', argument " "4"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::smawk(arg1,arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_kmeans1d(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "kmeans1d", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "kmeans1d" "', argument " "1"" of type '" "float const *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "kmeans1d" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "kmeans1d" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "kmeans1d" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)faiss::kmeans1d((float const *)arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Neighbor_id_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Neighbor *arg1 = (faiss::nndescent::Neighbor *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Neighbor_id_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Neighbor, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Neighbor_id_set" "', argument " "1"" of type '" "faiss::nndescent::Neighbor *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Neighbor * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Neighbor_id_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->id = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Neighbor_id_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Neighbor *arg1 = (faiss::nndescent::Neighbor *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Neighbor, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Neighbor_id_get" "', argument " "1"" of type '" "faiss::nndescent::Neighbor *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Neighbor * >(argp1);
+  result = (int) ((arg1)->id);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Neighbor_distance_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Neighbor *arg1 = (faiss::nndescent::Neighbor *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Neighbor_distance_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Neighbor, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Neighbor_distance_set" "', argument " "1"" of type '" "faiss::nndescent::Neighbor *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Neighbor * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Neighbor_distance_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->distance = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Neighbor_distance_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Neighbor *arg1 = (faiss::nndescent::Neighbor *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Neighbor, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Neighbor_distance_get" "', argument " "1"" of type '" "faiss::nndescent::Neighbor *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Neighbor * >(argp1);
+  result = (float) ((arg1)->distance);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Neighbor_flag_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Neighbor *arg1 = (faiss::nndescent::Neighbor *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Neighbor_flag_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Neighbor, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Neighbor_flag_set" "', argument " "1"" of type '" "faiss::nndescent::Neighbor *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Neighbor * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Neighbor_flag_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->flag = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Neighbor_flag_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Neighbor *arg1 = (faiss::nndescent::Neighbor *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Neighbor, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Neighbor_flag_get" "', argument " "1"" of type '" "faiss::nndescent::Neighbor *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Neighbor * >(argp1);
+  result = (bool) ((arg1)->flag);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Neighbor__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Neighbor *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::nndescent::Neighbor *)new faiss::nndescent::Neighbor();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__nndescent__Neighbor, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Neighbor__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  float arg2 ;
+  bool arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  faiss::nndescent::Neighbor *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_Neighbor" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_Neighbor" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_Neighbor" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::nndescent::Neighbor *)new faiss::nndescent::Neighbor(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__nndescent__Neighbor, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Neighbor(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_Neighbor", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_Neighbor__SWIG_0(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_float(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_Neighbor__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_Neighbor'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::nndescent::Neighbor::Neighbor()\n"
+    "    faiss::nndescent::Neighbor::Neighbor(int,float,bool)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_Neighbor___lt__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Neighbor *arg1 = (faiss::nndescent::Neighbor *) 0 ;
+  faiss::nndescent::Neighbor *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  bool result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Neighbor___lt__", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Neighbor, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Neighbor___lt__" "', argument " "1"" of type '" "faiss::nndescent::Neighbor const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Neighbor * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__nndescent__Neighbor,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Neighbor___lt__" "', argument " "2"" of type '" "faiss::nndescent::Neighbor const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Neighbor___lt__" "', argument " "2"" of type '" "faiss::nndescent::Neighbor const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::nndescent::Neighbor * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)((faiss::nndescent::Neighbor const *)arg1)->operator <((faiss::nndescent::Neighbor const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  PyErr_Clear();
+  Py_INCREF(Py_NotImplemented);
+  return Py_NotImplemented;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Neighbor(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Neighbor *arg1 = (faiss::nndescent::Neighbor *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Neighbor, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Neighbor" "', argument " "1"" of type '" "faiss::nndescent::Neighbor *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Neighbor * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Neighbor_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__nndescent__Neighbor, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Neighbor_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_Nhood_pool_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  std::vector< faiss::nndescent::Neighbor > *arg2 = (std::vector< faiss::nndescent::Neighbor > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Nhood_pool_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Nhood_pool_set" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__nndescent__Neighbor_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Nhood_pool_set" "', argument " "2"" of type '" "std::vector< faiss::nndescent::Neighbor > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::nndescent::Neighbor > * >(argp2);
+  if (arg1) (arg1)->pool = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Nhood_pool_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::nndescent::Neighbor > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Nhood_pool_get" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  result = (std::vector< faiss::nndescent::Neighbor > *)& ((arg1)->pool);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__nndescent__Neighbor_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Nhood_M_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Nhood_M_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Nhood_M_set" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Nhood_M_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->M = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Nhood_M_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Nhood_M_get" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  result = (int) ((arg1)->M);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Nhood_nn_old_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  std::vector< int > *arg2 = (std::vector< int > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Nhood_nn_old_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Nhood_nn_old_set" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Nhood_nn_old_set" "', argument " "2"" of type '" "std::vector< int > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  if (arg1) (arg1)->nn_old = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Nhood_nn_old_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< int > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Nhood_nn_old_get" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  result = (std::vector< int > *)& ((arg1)->nn_old);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Nhood_nn_new_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  std::vector< int > *arg2 = (std::vector< int > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Nhood_nn_new_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Nhood_nn_new_set" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Nhood_nn_new_set" "', argument " "2"" of type '" "std::vector< int > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  if (arg1) (arg1)->nn_new = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Nhood_nn_new_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< int > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Nhood_nn_new_get" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  result = (std::vector< int > *)& ((arg1)->nn_new);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Nhood_rnn_old_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  std::vector< int > *arg2 = (std::vector< int > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Nhood_rnn_old_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Nhood_rnn_old_set" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Nhood_rnn_old_set" "', argument " "2"" of type '" "std::vector< int > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  if (arg1) (arg1)->rnn_old = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Nhood_rnn_old_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< int > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Nhood_rnn_old_get" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  result = (std::vector< int > *)& ((arg1)->rnn_old);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Nhood_rnn_new_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  std::vector< int > *arg2 = (std::vector< int > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Nhood_rnn_new_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Nhood_rnn_new_set" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Nhood_rnn_new_set" "', argument " "2"" of type '" "std::vector< int > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  if (arg1) (arg1)->rnn_new = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Nhood_rnn_new_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< int > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Nhood_rnn_new_get" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  result = (std::vector< int > *)& ((arg1)->rnn_new);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Nhood__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::nndescent::Nhood *)new faiss::nndescent::Nhood();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__nndescent__Nhood, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Nhood__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  std::mt19937 *arg3 = 0 ;
+  int arg4 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::nndescent::Nhood *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_Nhood" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_Nhood" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_std__mt19937,  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_Nhood" "', argument " "3"" of type '" "std::mt19937 &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_Nhood" "', argument " "3"" of type '" "std::mt19937 &""'"); 
+  }
+  arg3 = reinterpret_cast< std::mt19937 * >(argp3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_Nhood" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::nndescent::Nhood *)new faiss::nndescent::Nhood(arg1,arg2,*arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__nndescent__Nhood, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Nhood__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::nndescent::Nhood *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_faiss__nndescent__Nhood,  0  | 0);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_Nhood" "', argument " "1"" of type '" "faiss::nndescent::Nhood const &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_Nhood" "', argument " "1"" of type '" "faiss::nndescent::Nhood const &""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::nndescent::Nhood *)new faiss::nndescent::Nhood((faiss::nndescent::Nhood const &)*arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__nndescent__Nhood, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Nhood(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_Nhood", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_Nhood__SWIG_0(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_faiss__nndescent__Nhood, SWIG_POINTER_NO_NULL | 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_Nhood__SWIG_2(self, argc, argv);
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_std__mt19937, SWIG_POINTER_NO_NULL);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_Nhood__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_Nhood'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::nndescent::Nhood::Nhood()\n"
+    "    faiss::nndescent::Nhood::Nhood(int,int,std::mt19937 &,int)\n"
+    "    faiss::nndescent::Nhood::Nhood(faiss::nndescent::Nhood const &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_Nhood_insert(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  int arg2 ;
+  float arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  float val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Nhood_insert", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Nhood_insert" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Nhood_insert" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_float(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "Nhood_insert" "', argument " "3"" of type '" "float""'");
+  } 
+  arg3 = static_cast< float >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->insert(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Nhood(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::nndescent::Nhood *arg1 = (faiss::nndescent::Nhood *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__nndescent__Nhood, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Nhood" "', argument " "1"" of type '" "faiss::nndescent::Nhood *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::nndescent::Nhood * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Nhood_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__nndescent__Nhood, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Nhood_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_NNDescent(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::NNDescent *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_NNDescent", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_NNDescent" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_NNDescent" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::NNDescent *)new faiss::NNDescent(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__NNDescent, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_NNDescent(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_NNDescent" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_build(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  faiss::DistanceComputer *arg2 = 0 ;
+  int arg3 ;
+  bool arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  bool val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_build", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_build" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NNDescent_build" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NNDescent_build" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DistanceComputer * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "NNDescent_build" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_bool(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "NNDescent_build" "', argument " "4"" of type '" "bool""'");
+  } 
+  arg4 = static_cast< bool >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->build(*arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  faiss::DistanceComputer *arg2 = 0 ;
+  int arg3 ;
+  faiss::NNDescent::idx_t *arg4 = (faiss::NNDescent::idx_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  faiss::VisitedTable *arg6 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_search" "', argument " "1"" of type '" "faiss::NNDescent const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NNDescent_search" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NNDescent_search" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DistanceComputer * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "NNDescent_search" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "NNDescent_search" "', argument " "4"" of type '" "faiss::NNDescent::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::NNDescent::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "NNDescent_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6, SWIGTYPE_p_faiss__VisitedTable,  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "NNDescent_search" "', argument " "6"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  if (!argp6) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NNDescent_search" "', argument " "6"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::VisitedTable * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::NNDescent const *)arg1)->search(*arg2,arg3,arg4,arg5,*arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_reset" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_init_graph(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  faiss::DistanceComputer *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_init_graph", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_init_graph" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NNDescent_init_graph" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NNDescent_init_graph" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DistanceComputer * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->init_graph(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_nndescent(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  faiss::DistanceComputer *arg2 = 0 ;
+  bool arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_nndescent", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_nndescent" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NNDescent_nndescent" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NNDescent_nndescent" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DistanceComputer * >(argp2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "NNDescent_nndescent" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->nndescent(*arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_join(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  faiss::DistanceComputer *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_join", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_join" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NNDescent_join" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NNDescent_join" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DistanceComputer * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->join(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_update(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_update" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->update();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_generate_eval_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  faiss::DistanceComputer *arg2 = 0 ;
+  std::vector< int > *arg3 = 0 ;
+  std::vector< std::vector< int32_t > > *arg4 = 0 ;
+  int arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_generate_eval_set", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_generate_eval_set" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NNDescent_generate_eval_set" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NNDescent_generate_eval_set" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DistanceComputer * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_std__vectorT_int_t,  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "NNDescent_generate_eval_set" "', argument " "3"" of type '" "std::vector< int > &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NNDescent_generate_eval_set" "', argument " "3"" of type '" "std::vector< int > &""'"); 
+  }
+  arg3 = reinterpret_cast< std::vector< int > * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t,  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "NNDescent_generate_eval_set" "', argument " "4"" of type '" "std::vector< std::vector< int32_t > > &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NNDescent_generate_eval_set" "', argument " "4"" of type '" "std::vector< std::vector< int32_t > > &""'"); 
+  }
+  arg4 = reinterpret_cast< std::vector< std::vector< int32_t > > * >(argp4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "NNDescent_generate_eval_set" "', argument " "5"" of type '" "int""'");
+  } 
+  arg5 = static_cast< int >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->generate_eval_set(*arg2,*arg3,*arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_eval_recall(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  std::vector< int > *arg2 = 0 ;
+  std::vector< std::vector< int32_t > > *arg3 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  float result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_eval_recall", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_eval_recall" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_int_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NNDescent_eval_recall" "', argument " "2"" of type '" "std::vector< int > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NNDescent_eval_recall" "', argument " "2"" of type '" "std::vector< int > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_std__vectorT_std__vectorT_int32_t_t_t,  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "NNDescent_eval_recall" "', argument " "3"" of type '" "std::vector< std::vector< int32_t > > &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NNDescent_eval_recall" "', argument " "3"" of type '" "std::vector< std::vector< int32_t > > &""'"); 
+  }
+  arg3 = reinterpret_cast< std::vector< std::vector< int32_t > > * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)(arg1)->eval_recall(*arg2,*arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_has_built_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_has_built_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_has_built_set" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NNDescent_has_built_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->has_built = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_has_built_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_has_built_get" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  result = (bool) ((arg1)->has_built);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_K_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_K_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_K_set" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NNDescent_K_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->K = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_K_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_K_get" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  result = (int) ((arg1)->K);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_S_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_S_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_S_set" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NNDescent_S_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->S = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_S_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_S_get" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  result = (int) ((arg1)->S);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_R_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_R_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_R_set" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NNDescent_R_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->R = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_R_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_R_get" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  result = (int) ((arg1)->R);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_L_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_L_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_L_set" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NNDescent_L_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->L = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_L_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_L_get" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  result = (int) ((arg1)->L);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_iter_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_iter_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_iter_set" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NNDescent_iter_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->iter = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_iter_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_iter_get" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  result = (int) ((arg1)->iter);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_search_L_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_search_L_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_search_L_set" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NNDescent_search_L_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->search_L = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_search_L_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_search_L_get" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  result = (int) ((arg1)->search_L);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_random_seed_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_random_seed_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_random_seed_set" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NNDescent_random_seed_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->random_seed = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_random_seed_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_random_seed_get" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  result = (int) ((arg1)->random_seed);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_d_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_d_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_d_set" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NNDescent_d_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->d = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_d_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_d_get" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  result = (int) ((arg1)->d);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_ntotal_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_ntotal_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_ntotal_set" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NNDescent_ntotal_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->ntotal = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_ntotal_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_ntotal_get" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  result = (int) ((arg1)->ntotal);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_graph_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  faiss::NNDescent::KNNGraph *arg2 = (faiss::NNDescent::KNNGraph *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_graph_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_graph_set" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__nndescent__Nhood_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NNDescent_graph_set" "', argument " "2"" of type '" "faiss::NNDescent::KNNGraph *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::NNDescent::KNNGraph * >(argp2);
+  if (arg1) (arg1)->graph = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_graph_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::NNDescent::KNNGraph *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_graph_get" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  result = (faiss::NNDescent::KNNGraph *)& ((arg1)->graph);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__nndescent__Nhood_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_final_graph_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  std::vector< int > *arg2 = (std::vector< int > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NNDescent_final_graph_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_final_graph_set" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NNDescent_final_graph_set" "', argument " "2"" of type '" "std::vector< int > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  if (arg1) (arg1)->final_graph = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NNDescent_final_graph_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NNDescent *arg1 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< int > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NNDescent_final_graph_get" "', argument " "1"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NNDescent * >(argp1);
+  result = (std::vector< int > *)& ((arg1)->final_graph);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *NNDescent_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__NNDescent, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *NNDescent_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexNNDescent_nndescent_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescent *arg1 = (faiss::IndexNNDescent *) 0 ;
+  faiss::NNDescent *arg2 = (faiss::NNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNNDescent_nndescent_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNNDescent_nndescent_set" "', argument " "1"" of type '" "faiss::IndexNNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNNDescent * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexNNDescent_nndescent_set" "', argument " "2"" of type '" "faiss::NNDescent *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::NNDescent * >(argp2);
+  if (arg1) (arg1)->nndescent = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNNDescent_nndescent_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescent *arg1 = (faiss::IndexNNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::NNDescent *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNNDescent_nndescent_get" "', argument " "1"" of type '" "faiss::IndexNNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNNDescent * >(argp1);
+  result = (faiss::NNDescent *)& ((arg1)->nndescent);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__NNDescent, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNNDescent_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescent *arg1 = (faiss::IndexNNDescent *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNNDescent_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNNDescent_own_fields_set" "', argument " "1"" of type '" "faiss::IndexNNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNNDescent_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNNDescent_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescent *arg1 = (faiss::IndexNNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNNDescent_own_fields_get" "', argument " "1"" of type '" "faiss::IndexNNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNNDescent * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNNDescent_storage_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescent *arg1 = (faiss::IndexNNDescent *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNNDescent_storage_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNNDescent_storage_set" "', argument " "1"" of type '" "faiss::IndexNNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNNDescent * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexNNDescent_storage_set" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  if (arg1) (arg1)->storage = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNNDescent_storage_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescent *arg1 = (faiss::IndexNNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNNDescent_storage_get" "', argument " "1"" of type '" "faiss::IndexNNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNNDescent * >(argp1);
+  result = (faiss::Index *) ((arg1)->storage);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNNDescent__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  faiss::MetricType arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexNNDescent *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexNNDescent" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexNNDescent" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexNNDescent" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNNDescent *)new faiss::IndexNNDescent(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNNDescent, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNNDescent__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexNNDescent *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexNNDescent" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexNNDescent" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNNDescent *)new faiss::IndexNNDescent(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNNDescent, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNNDescent__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexNNDescent *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexNNDescent" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNNDescent *)new faiss::IndexNNDescent(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNNDescent, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNNDescent__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescent *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNNDescent *)new faiss::IndexNNDescent();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNNDescent, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNNDescent__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexNNDescent *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexNNDescent" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexNNDescent" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNNDescent *)new faiss::IndexNNDescent(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNNDescent, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNNDescent__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexNNDescent *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexNNDescent" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNNDescent *)new faiss::IndexNNDescent(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNNDescent, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNNDescent(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexNNDescent", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexNNDescent__SWIG_3(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexNNDescent__SWIG_5(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexNNDescent__SWIG_2(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexNNDescent__SWIG_4(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexNNDescent__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexNNDescent__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexNNDescent'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexNNDescent::IndexNNDescent(int,int,faiss::MetricType)\n"
+    "    faiss::IndexNNDescent::IndexNNDescent(int,int)\n"
+    "    faiss::IndexNNDescent::IndexNNDescent(int)\n"
+    "    faiss::IndexNNDescent::IndexNNDescent()\n"
+    "    faiss::IndexNNDescent::IndexNNDescent(faiss::Index *,int)\n"
+    "    faiss::IndexNNDescent::IndexNNDescent(faiss::Index *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexNNDescent(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescent *arg1 = (faiss::IndexNNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNNDescent, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexNNDescent" "', argument " "1"" of type '" "faiss::IndexNNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNNDescent * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNNDescent_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescent *arg1 = (faiss::IndexNNDescent *) 0 ;
+  faiss::IndexNNDescent::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNNDescent_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNNDescent_add" "', argument " "1"" of type '" "faiss::IndexNNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNNDescent_add" "', argument " "2"" of type '" "faiss::IndexNNDescent::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexNNDescent::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexNNDescent_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNNDescent_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescent *arg1 = (faiss::IndexNNDescent *) 0 ;
+  faiss::IndexNNDescent::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNNDescent_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNNDescent_train" "', argument " "1"" of type '" "faiss::IndexNNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNNDescent_train" "', argument " "2"" of type '" "faiss::IndexNNDescent::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexNNDescent::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexNNDescent_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNNDescent_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescent *arg1 = (faiss::IndexNNDescent *) 0 ;
+  faiss::IndexNNDescent::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::IndexNNDescent::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::IndexNNDescent::idx_t *arg6 = (faiss::IndexNNDescent::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNNDescent_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNNDescent_search" "', argument " "1"" of type '" "faiss::IndexNNDescent const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNNDescent_search" "', argument " "2"" of type '" "faiss::IndexNNDescent::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexNNDescent::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexNNDescent_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexNNDescent_search" "', argument " "4"" of type '" "faiss::IndexNNDescent::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexNNDescent::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexNNDescent_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexNNDescent_search" "', argument " "6"" of type '" "faiss::IndexNNDescent::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexNNDescent::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexNNDescent const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNNDescent_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescent *arg1 = (faiss::IndexNNDescent *) 0 ;
+  faiss::IndexNNDescent::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNNDescent_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNNDescent_reconstruct" "', argument " "1"" of type '" "faiss::IndexNNDescent const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNNDescent * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNNDescent_reconstruct" "', argument " "2"" of type '" "faiss::IndexNNDescent::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexNNDescent::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexNNDescent_reconstruct" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexNNDescent const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNNDescent_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescent *arg1 = (faiss::IndexNNDescent *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNNDescent, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNNDescent_reset" "', argument " "1"" of type '" "faiss::IndexNNDescent *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNNDescent * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexNNDescent_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexNNDescent, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexNNDescent_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexNNDescentFlat__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescentFlat *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNNDescentFlat *)new faiss::IndexNNDescentFlat();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNNDescentFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNNDescentFlat__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  faiss::MetricType arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexNNDescentFlat *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexNNDescentFlat" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexNNDescentFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexNNDescentFlat" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNNDescentFlat *)new faiss::IndexNNDescentFlat(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNNDescentFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNNDescentFlat__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexNNDescentFlat *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexNNDescentFlat" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexNNDescentFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNNDescentFlat *)new faiss::IndexNNDescentFlat(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNNDescentFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNNDescentFlat(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexNNDescentFlat", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexNNDescentFlat__SWIG_0(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexNNDescentFlat__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexNNDescentFlat__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexNNDescentFlat'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexNNDescentFlat::IndexNNDescentFlat()\n"
+    "    faiss::IndexNNDescentFlat::IndexNNDescentFlat(int,int,faiss::MetricType)\n"
+    "    faiss::IndexNNDescentFlat::IndexNNDescentFlat(int,int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexNNDescentFlat(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNNDescentFlat *arg1 = (faiss::IndexNNDescentFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNNDescentFlat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexNNDescentFlat" "', argument " "1"" of type '" "faiss::IndexNNDescentFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNNDescentFlat * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexNNDescentFlat_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexNNDescentFlat, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexNNDescentFlat_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFFlat__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::MetricType arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::IndexIVFFlat *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFFlat" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFFlat" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFFlat" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFFlat" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFFlat *)new faiss::IndexIVFFlat(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFFlat__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexIVFFlat *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFFlat" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFFlat" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFFlat" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFFlat *)new faiss::IndexIVFFlat(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlat_add_core(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlat *arg1 = (faiss::IndexIVFFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFFlat_add_core", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlat_add_core" "', argument " "1"" of type '" "faiss::IndexIVFFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlat_add_core" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFFlat_add_core" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFFlat_add_core" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFFlat_add_core" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_core(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,(faiss::Index::idx_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlat_encode_vectors__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlat *arg1 = (faiss::IndexIVFFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  bool arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  bool val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlat_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVFFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlat_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFFlat_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFFlat_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFFlat_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  ecode6 = SWIG_AsVal_bool(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "IndexIVFFlat_encode_vectors" "', argument " "6"" of type '" "bool""'");
+  } 
+  arg6 = static_cast< bool >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFFlat const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlat_encode_vectors__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlat *arg1 = (faiss::IndexIVFFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlat_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVFFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlat_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFFlat_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFFlat_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFFlat_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFFlat const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlat_encode_vectors(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVFFlat_encode_vectors", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFFlat, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_IndexIVFFlat_encode_vectors__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFFlat, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              {
+                int res = SWIG_AsVal_bool(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_IndexIVFFlat_encode_vectors__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVFFlat_encode_vectors'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFFlat::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *,bool) const\n"
+    "    faiss::IndexIVFFlat::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlat_get_InvertedListScanner(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlat *arg1 = (faiss::IndexIVFFlat *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedListScanner *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFFlat_get_InvertedListScanner", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlat_get_InvertedListScanner" "', argument " "1"" of type '" "faiss::IndexIVFFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlat * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlat_get_InvertedListScanner" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedListScanner *)((faiss::IndexIVFFlat const *)arg1)->get_InvertedListScanner(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedListScanner, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlat_reconstruct_from_offset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlat *arg1 = (faiss::IndexIVFFlat *) 0 ;
+  int64_t arg2 ;
+  int64_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFFlat_reconstruct_from_offset", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlat_reconstruct_from_offset" "', argument " "1"" of type '" "faiss::IndexIVFFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlat_reconstruct_from_offset" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexIVFFlat_reconstruct_from_offset" "', argument " "3"" of type '" "int64_t""'");
+  } 
+  arg3 = static_cast< int64_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFFlat_reconstruct_from_offset" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFFlat const *)arg1)->reconstruct_from_offset(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlat_sa_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlat *arg1 = (faiss::IndexIVFFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFFlat_sa_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlat_sa_decode" "', argument " "1"" of type '" "faiss::IndexIVFFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlat_sa_decode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFFlat_sa_decode" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFFlat_sa_decode" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFFlat const *)arg1)->sa_decode(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFFlat__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlat *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFFlat *)new faiss::IndexIVFFlat();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFFlat(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexIVFFlat", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexIVFFlat__SWIG_2(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexIVFFlat__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_IndexIVFFlat__SWIG_0(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexIVFFlat'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFFlat::IndexIVFFlat(faiss::Index *,size_t,size_t,faiss::MetricType)\n"
+    "    faiss::IndexIVFFlat::IndexIVFFlat(faiss::Index *,size_t,size_t)\n"
+    "    faiss::IndexIVFFlat::IndexIVFFlat()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIVFFlat(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlat *arg1 = (faiss::IndexIVFFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIVFFlat" "', argument " "1"" of type '" "faiss::IndexIVFFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlat * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexIVFFlat_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIVFFlat, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIVFFlat_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlatDedup_instances_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlatDedup *arg1 = (faiss::IndexIVFFlatDedup *) 0 ;
+  std::unordered_multimap< faiss::Index::idx_t,faiss::Index::idx_t > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFFlatDedup_instances_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlatDedup_instances_set" "', argument " "1"" of type '" "faiss::IndexIVFFlatDedup *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlatDedup * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__unordered_multimapT_long_long_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFFlatDedup_instances_set" "', argument " "2"" of type '" "std::unordered_multimap< faiss::Index::idx_t,faiss::Index::idx_t >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIVFFlatDedup_instances_set" "', argument " "2"" of type '" "std::unordered_multimap< faiss::Index::idx_t,faiss::Index::idx_t >""'");
+    } else {
+      std::unordered_multimap< faiss::Index::idx_t,faiss::Index::idx_t > * temp = reinterpret_cast< std::unordered_multimap< faiss::Index::idx_t,faiss::Index::idx_t > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  if (arg1) (arg1)->instances = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlatDedup_instances_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlatDedup *arg1 = (faiss::IndexIVFFlatDedup *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::unordered_multimap< faiss::Index::idx_t,faiss::Index::idx_t > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlatDedup_instances_get" "', argument " "1"" of type '" "faiss::IndexIVFFlatDedup *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlatDedup * >(argp1);
+  result =  ((arg1)->instances);
+  resultobj = SWIG_NewPointerObj((new std::unordered_multimap< faiss::Index::idx_t,faiss::Index::idx_t >(static_cast< const std::unordered_multimap< faiss::Index::idx_t,faiss::Index::idx_t >& >(result))), SWIGTYPE_p_std__unordered_multimapT_long_long_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFFlatDedup__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::MetricType arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::IndexIVFFlatDedup *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFFlatDedup" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFFlatDedup" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFFlatDedup" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFFlatDedup" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFFlatDedup *)new faiss::IndexIVFFlatDedup(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFFlatDedup, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFFlatDedup__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexIVFFlatDedup *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFFlatDedup" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFFlatDedup" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFFlatDedup" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFFlatDedup *)new faiss::IndexIVFFlatDedup(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFFlatDedup, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlatDedup_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlatDedup *arg1 = (faiss::IndexIVFFlatDedup *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFFlatDedup_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlatDedup_train" "', argument " "1"" of type '" "faiss::IndexIVFFlatDedup *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlatDedup * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlatDedup_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFFlatDedup_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlatDedup_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlatDedup *arg1 = (faiss::IndexIVFFlatDedup *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFFlatDedup_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlatDedup_add_with_ids" "', argument " "1"" of type '" "faiss::IndexIVFFlatDedup *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlatDedup * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlatDedup_add_with_ids" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFFlatDedup_add_with_ids" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFFlatDedup_add_with_ids" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlatDedup_search_preassigned__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlatDedup *arg1 = (faiss::IndexIVFFlatDedup *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  float *arg7 = (float *) 0 ;
+  faiss::Index::idx_t *arg8 = (faiss::Index::idx_t *) 0 ;
+  bool arg9 ;
+  faiss::IVFSearchParameters *arg10 = (faiss::IVFSearchParameters *) 0 ;
+  faiss::IndexIVFStats *arg11 = (faiss::IndexIVFStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  bool val9 ;
+  int ecode9 = 0 ;
+  void *argp10 = 0 ;
+  int res10 = 0 ;
+  void *argp11 = 0 ;
+  int res11 = 0 ;
+  
+  if ((nobjs < 11) || (nobjs > 11)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "1"" of type '" "faiss::IndexIVFFlatDedup const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlatDedup * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "8"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::Index::idx_t * >(argp8);
+  ecode9 = SWIG_AsVal_bool(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "9"" of type '" "bool""'");
+  } 
+  arg9 = static_cast< bool >(val9);
+  res10 = SWIG_ConvertPtr(swig_obj[9], &argp10,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res10)) {
+    SWIG_exception_fail(SWIG_ArgError(res10), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "10"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg10 = reinterpret_cast< faiss::IVFSearchParameters * >(argp10);
+  res11 = SWIG_ConvertPtr(swig_obj[10], &argp11,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res11)) {
+    SWIG_exception_fail(SWIG_ArgError(res11), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "11"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg11 = reinterpret_cast< faiss::IndexIVFStats * >(argp11);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFFlatDedup const *)arg1)->search_preassigned(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5,(float const *)arg6,arg7,arg8,arg9,(faiss::IVFSearchParameters const *)arg10,arg11);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlatDedup_search_preassigned__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlatDedup *arg1 = (faiss::IndexIVFFlatDedup *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  float *arg7 = (float *) 0 ;
+  faiss::Index::idx_t *arg8 = (faiss::Index::idx_t *) 0 ;
+  bool arg9 ;
+  faiss::IVFSearchParameters *arg10 = (faiss::IVFSearchParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  bool val9 ;
+  int ecode9 = 0 ;
+  void *argp10 = 0 ;
+  int res10 = 0 ;
+  
+  if ((nobjs < 10) || (nobjs > 10)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "1"" of type '" "faiss::IndexIVFFlatDedup const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlatDedup * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "8"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::Index::idx_t * >(argp8);
+  ecode9 = SWIG_AsVal_bool(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "9"" of type '" "bool""'");
+  } 
+  arg9 = static_cast< bool >(val9);
+  res10 = SWIG_ConvertPtr(swig_obj[9], &argp10,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res10)) {
+    SWIG_exception_fail(SWIG_ArgError(res10), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "10"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg10 = reinterpret_cast< faiss::IVFSearchParameters * >(argp10);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFFlatDedup const *)arg1)->search_preassigned(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5,(float const *)arg6,arg7,arg8,arg9,(faiss::IVFSearchParameters const *)arg10);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlatDedup_search_preassigned__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlatDedup *arg1 = (faiss::IndexIVFFlatDedup *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  float *arg7 = (float *) 0 ;
+  faiss::Index::idx_t *arg8 = (faiss::Index::idx_t *) 0 ;
+  bool arg9 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  bool val9 ;
+  int ecode9 = 0 ;
+  
+  if ((nobjs < 9) || (nobjs > 9)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "1"" of type '" "faiss::IndexIVFFlatDedup const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlatDedup * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "8"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::Index::idx_t * >(argp8);
+  ecode9 = SWIG_AsVal_bool(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "IndexIVFFlatDedup_search_preassigned" "', argument " "9"" of type '" "bool""'");
+  } 
+  arg9 = static_cast< bool >(val9);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFFlatDedup const *)arg1)->search_preassigned(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5,(float const *)arg6,arg7,arg8,arg9);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlatDedup_search_preassigned(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[12] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVFFlatDedup_search_preassigned", 0, 11, argv))) SWIG_fail;
+  --argc;
+  if (argc == 9) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_bool(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      return _wrap_IndexIVFFlatDedup_search_preassigned__SWIG_2(self, argc, argv);
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 10) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_bool(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      void *vptr = 0;
+                      int res = SWIG_ConvertPtr(argv[9], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+                      _v = SWIG_CheckState(res);
+                      if (_v) {
+                        return _wrap_IndexIVFFlatDedup_search_preassigned__SWIG_1(self, argc, argv);
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 11) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_bool(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      void *vptr = 0;
+                      int res = SWIG_ConvertPtr(argv[9], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+                      _v = SWIG_CheckState(res);
+                      if (_v) {
+                        void *vptr = 0;
+                        int res = SWIG_ConvertPtr(argv[10], &vptr, SWIGTYPE_p_faiss__IndexIVFStats, 0);
+                        _v = SWIG_CheckState(res);
+                        if (_v) {
+                          return _wrap_IndexIVFFlatDedup_search_preassigned__SWIG_0(self, argc, argv);
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVFFlatDedup_search_preassigned'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFFlatDedup::search_preassigned(faiss::Index::idx_t,float const *,faiss::Index::idx_t,faiss::Index::idx_t const *,float const *,float *,faiss::Index::idx_t *,bool,faiss::IVFSearchParameters const *,faiss::IndexIVFStats *) const\n"
+    "    faiss::IndexIVFFlatDedup::search_preassigned(faiss::Index::idx_t,float const *,faiss::Index::idx_t,faiss::Index::idx_t const *,float const *,float *,faiss::Index::idx_t *,bool,faiss::IVFSearchParameters const *) const\n"
+    "    faiss::IndexIVFFlatDedup::search_preassigned(faiss::Index::idx_t,float const *,faiss::Index::idx_t,faiss::Index::idx_t const *,float const *,float *,faiss::Index::idx_t *,bool) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlatDedup_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlatDedup *arg1 = (faiss::IndexIVFFlatDedup *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFFlatDedup_remove_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlatDedup_remove_ids" "', argument " "1"" of type '" "faiss::IndexIVFFlatDedup *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlatDedup * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFFlatDedup_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIVFFlatDedup_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlatDedup_range_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlatDedup *arg1 = (faiss::IndexIVFFlatDedup *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFFlatDedup_range_search", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlatDedup_range_search" "', argument " "1"" of type '" "faiss::IndexIVFFlatDedup const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlatDedup * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlatDedup_range_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFFlatDedup_range_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_float(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVFFlatDedup_range_search" "', argument " "4"" of type '" "float""'");
+  } 
+  arg4 = static_cast< float >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFFlatDedup_range_search" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFFlatDedup const *)arg1)->range_search(arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlatDedup_update_vectors(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlatDedup *arg1 = (faiss::IndexIVFFlatDedup *) 0 ;
+  int arg2 ;
+  faiss::Index::idx_t *arg3 = (faiss::Index::idx_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFFlatDedup_update_vectors", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlatDedup_update_vectors" "', argument " "1"" of type '" "faiss::IndexIVFFlatDedup *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlatDedup * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlatDedup_update_vectors" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFFlatDedup_update_vectors" "', argument " "3"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::Index::idx_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFFlatDedup_update_vectors" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->update_vectors(arg2,(faiss::Index::idx_t const *)arg3,(float const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFFlatDedup_reconstruct_from_offset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlatDedup *arg1 = (faiss::IndexIVFFlatDedup *) 0 ;
+  int64_t arg2 ;
+  int64_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFFlatDedup_reconstruct_from_offset", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlatDedup, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFFlatDedup_reconstruct_from_offset" "', argument " "1"" of type '" "faiss::IndexIVFFlatDedup const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlatDedup * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFFlatDedup_reconstruct_from_offset" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexIVFFlatDedup_reconstruct_from_offset" "', argument " "3"" of type '" "int64_t""'");
+  } 
+  arg3 = static_cast< int64_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFFlatDedup_reconstruct_from_offset" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFFlatDedup const *)arg1)->reconstruct_from_offset(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFFlatDedup__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlatDedup *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFFlatDedup *)new faiss::IndexIVFFlatDedup();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFFlatDedup, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFFlatDedup(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexIVFFlatDedup", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexIVFFlatDedup__SWIG_2(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexIVFFlatDedup__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_IndexIVFFlatDedup__SWIG_0(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexIVFFlatDedup'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFFlatDedup::IndexIVFFlatDedup(faiss::Index *,size_t,size_t,faiss::MetricType)\n"
+    "    faiss::IndexIVFFlatDedup::IndexIVFFlatDedup(faiss::Index *,size_t,size_t)\n"
+    "    faiss::IndexIVFFlatDedup::IndexIVFFlatDedup()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIVFFlatDedup(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFFlatDedup *arg1 = (faiss::IndexIVFFlatDedup *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFFlatDedup, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIVFFlatDedup" "', argument " "1"" of type '" "faiss::IndexIVFFlatDedup *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFFlatDedup * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexIVFFlatDedup_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIVFFlatDedup, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIVFFlatDedup_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_storage_distance_computer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DistanceComputer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "storage_distance_computer" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::DistanceComputer *)faiss::nsg::storage_distance_computer((faiss::Index const *)arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DistanceComputer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_ntotal_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_ntotal_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_ntotal_set" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NSG_ntotal_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->ntotal = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_ntotal_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_ntotal_get" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  result = (int) ((arg1)->ntotal);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_R_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_R_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_R_set" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NSG_R_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->R = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_R_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_R_get" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  result = (int) ((arg1)->R);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_L_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_L_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_L_set" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NSG_L_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->L = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_L_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_L_get" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  result = (int) ((arg1)->L);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_C_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_C_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_C_set" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NSG_C_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->C = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_C_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_C_get" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  result = (int) ((arg1)->C);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_search_L_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_search_L_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_search_L_set" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NSG_search_L_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->search_L = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_search_L_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_search_L_get" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  result = (int) ((arg1)->search_L);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_enterpoint_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_enterpoint_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_enterpoint_set" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NSG_enterpoint_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->enterpoint = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_enterpoint_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_enterpoint_get" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  result = (int) ((arg1)->enterpoint);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_final_graph_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  std::shared_ptr< faiss::nsg::Graph< int > > *arg2 = (std::shared_ptr< faiss::nsg::Graph< int > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_final_graph_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_final_graph_set" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__shared_ptrT_faiss__nsg__GraphT_int_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NSG_final_graph_set" "', argument " "2"" of type '" "std::shared_ptr< faiss::nsg::Graph< int > > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::shared_ptr< faiss::nsg::Graph< int > > * >(argp2);
+  if (arg1) (arg1)->final_graph = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_final_graph_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::shared_ptr< faiss::nsg::Graph< int > > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_final_graph_get" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  result = (std::shared_ptr< faiss::nsg::Graph< int > > *)& ((arg1)->final_graph);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__shared_ptrT_faiss__nsg__GraphT_int_t_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_is_built_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_is_built_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_is_built_set" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NSG_is_built_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->is_built = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_is_built_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_is_built_get" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  result = (bool) ((arg1)->is_built);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_rng_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  faiss::RandomGenerator *arg2 = (faiss::RandomGenerator *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_rng_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_rng_set" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__RandomGenerator, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NSG_rng_set" "', argument " "2"" of type '" "faiss::RandomGenerator *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::RandomGenerator * >(argp2);
+  if (arg1) (arg1)->rng = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_rng_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::RandomGenerator *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_rng_get" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  result = (faiss::RandomGenerator *)& ((arg1)->rng);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RandomGenerator, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_NSG__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::NSG *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_NSG" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::NSG *)new faiss::NSG(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__NSG, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_NSG__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::NSG *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::NSG *)new faiss::NSG();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__NSG, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_NSG(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_NSG", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_NSG__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_NSG__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_NSG'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::NSG::NSG(int)\n"
+    "    faiss::NSG::NSG()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_build(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  faiss::NSG::idx_t arg3 ;
+  faiss::nsg::Graph< faiss::NSG::idx_t > *arg4 = 0 ;
+  bool arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  bool val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_build", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_build" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NSG_build" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "NSG_build" "', argument " "3"" of type '" "faiss::NSG::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::NSG::idx_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_faiss__nsg__GraphT_long_t,  0  | 0);
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "NSG_build" "', argument " "4"" of type '" "faiss::nsg::Graph< faiss::NSG::idx_t > const &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_build" "', argument " "4"" of type '" "faiss::nsg::Graph< faiss::NSG::idx_t > const &""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::nsg::Graph< faiss::NSG::idx_t > * >(argp4);
+  ecode5 = SWIG_AsVal_bool(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "NSG_build" "', argument " "5"" of type '" "bool""'");
+  } 
+  arg5 = static_cast< bool >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->build(arg2,arg3,(faiss::nsg::Graph< faiss::NSG::idx_t > const &)*arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_reset" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  faiss::DistanceComputer *arg2 = 0 ;
+  int arg3 ;
+  faiss::NSG::idx_t *arg4 = (faiss::NSG::idx_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  faiss::VisitedTable *arg6 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_search" "', argument " "1"" of type '" "faiss::NSG const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NSG_search" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_search" "', argument " "2"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DistanceComputer * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "NSG_search" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "NSG_search" "', argument " "4"" of type '" "faiss::NSG::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::NSG::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "NSG_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6, SWIGTYPE_p_faiss__VisitedTable,  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "NSG_search" "', argument " "6"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  if (!argp6) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_search" "', argument " "6"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::VisitedTable * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::NSG const *)arg1)->search(*arg2,arg3,arg4,arg5,*arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_init_graph(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  faiss::nsg::Graph< faiss::NSG::idx_t > *arg3 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_init_graph", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_init_graph" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NSG_init_graph" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__nsg__GraphT_long_t,  0  | 0);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "NSG_init_graph" "', argument " "3"" of type '" "faiss::nsg::Graph< faiss::NSG::idx_t > const &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_init_graph" "', argument " "3"" of type '" "faiss::nsg::Graph< faiss::NSG::idx_t > const &""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::nsg::Graph< faiss::NSG::idx_t > * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->init_graph(arg2,(faiss::nsg::Graph< faiss::NSG::idx_t > const &)*arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_add_reverse_links(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  int arg2 ;
+  std::vector< std::mutex > *arg3 = 0 ;
+  faiss::DistanceComputer *arg4 = 0 ;
+  faiss::nsg::Graph< faiss::Node > *arg5 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_add_reverse_links", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_add_reverse_links" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NSG_add_reverse_links" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_std__vectorT_std__mutex_t,  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "NSG_add_reverse_links" "', argument " "3"" of type '" "std::vector< std::mutex > &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_add_reverse_links" "', argument " "3"" of type '" "std::vector< std::mutex > &""'"); 
+  }
+  arg3 = reinterpret_cast< std::vector< std::mutex > * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "NSG_add_reverse_links" "', argument " "4"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_add_reverse_links" "', argument " "4"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::DistanceComputer * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5, SWIGTYPE_p_faiss__nsg__GraphT_faiss__Node_t,  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "NSG_add_reverse_links" "', argument " "5"" of type '" "faiss::nsg::Graph< faiss::Node > &""'"); 
+  }
+  if (!argp5) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_add_reverse_links" "', argument " "5"" of type '" "faiss::nsg::Graph< faiss::Node > &""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::nsg::Graph< faiss::Node > * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_reverse_links(arg2,*arg3,*arg4,*arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_sync_prune(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  int arg2 ;
+  std::vector< faiss::Node > *arg3 = 0 ;
+  faiss::DistanceComputer *arg4 = 0 ;
+  faiss::VisitedTable *arg5 = 0 ;
+  faiss::nsg::Graph< faiss::NSG::idx_t > *arg6 = 0 ;
+  faiss::nsg::Graph< faiss::Node > *arg7 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_sync_prune", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_sync_prune" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "NSG_sync_prune" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_std__vectorT_faiss__Node_t,  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "NSG_sync_prune" "', argument " "3"" of type '" "std::vector< faiss::Node > &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_sync_prune" "', argument " "3"" of type '" "std::vector< faiss::Node > &""'"); 
+  }
+  arg3 = reinterpret_cast< std::vector< faiss::Node > * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_faiss__DistanceComputer,  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "NSG_sync_prune" "', argument " "4"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_sync_prune" "', argument " "4"" of type '" "faiss::DistanceComputer &""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::DistanceComputer * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5, SWIGTYPE_p_faiss__VisitedTable,  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "NSG_sync_prune" "', argument " "5"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  if (!argp5) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_sync_prune" "', argument " "5"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::VisitedTable * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6, SWIGTYPE_p_faiss__nsg__GraphT_long_t,  0  | 0);
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "NSG_sync_prune" "', argument " "6"" of type '" "faiss::nsg::Graph< faiss::NSG::idx_t > const &""'"); 
+  }
+  if (!argp6) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_sync_prune" "', argument " "6"" of type '" "faiss::nsg::Graph< faiss::NSG::idx_t > const &""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::nsg::Graph< faiss::NSG::idx_t > * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7, SWIGTYPE_p_faiss__nsg__GraphT_faiss__Node_t,  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "NSG_sync_prune" "', argument " "7"" of type '" "faiss::nsg::Graph< faiss::Node > &""'"); 
+  }
+  if (!argp7) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_sync_prune" "', argument " "7"" of type '" "faiss::nsg::Graph< faiss::Node > &""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::nsg::Graph< faiss::Node > * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->sync_prune(arg2,*arg3,*arg4,*arg5,(faiss::nsg::Graph< faiss::NSG::idx_t > const &)*arg6,*arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_link(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  faiss::nsg::Graph< faiss::NSG::idx_t > *arg3 = 0 ;
+  faiss::nsg::Graph< faiss::Node > *arg4 = 0 ;
+  bool arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  bool val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_link", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_link" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NSG_link" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__nsg__GraphT_long_t,  0  | 0);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "NSG_link" "', argument " "3"" of type '" "faiss::nsg::Graph< faiss::NSG::idx_t > const &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_link" "', argument " "3"" of type '" "faiss::nsg::Graph< faiss::NSG::idx_t > const &""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::nsg::Graph< faiss::NSG::idx_t > * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_faiss__nsg__GraphT_faiss__Node_t,  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "NSG_link" "', argument " "4"" of type '" "faiss::nsg::Graph< faiss::Node > &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_link" "', argument " "4"" of type '" "faiss::nsg::Graph< faiss::Node > &""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::nsg::Graph< faiss::Node > * >(argp4);
+  ecode5 = SWIG_AsVal_bool(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "NSG_link" "', argument " "5"" of type '" "bool""'");
+  } 
+  arg5 = static_cast< bool >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->link(arg2,(faiss::nsg::Graph< faiss::NSG::idx_t > const &)*arg3,*arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_tree_grow(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  std::vector< int > *arg3 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_tree_grow", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_tree_grow" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NSG_tree_grow" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_std__vectorT_int_t,  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "NSG_tree_grow" "', argument " "3"" of type '" "std::vector< int > &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_tree_grow" "', argument " "3"" of type '" "std::vector< int > &""'"); 
+  }
+  arg3 = reinterpret_cast< std::vector< int > * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)(arg1)->tree_grow(arg2,*arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_dfs(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  faiss::VisitedTable *arg2 = 0 ;
+  int arg3 ;
+  int arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_dfs", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_dfs" "', argument " "1"" of type '" "faiss::NSG const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__VisitedTable,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NSG_dfs" "', argument " "2"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_dfs" "', argument " "2"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::VisitedTable * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "NSG_dfs" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "NSG_dfs" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::NSG const *)arg1)->dfs(*arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_attach_unlinked(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  faiss::VisitedTable *arg3 = 0 ;
+  faiss::VisitedTable *arg4 = 0 ;
+  std::vector< int > *arg5 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "NSG_attach_unlinked", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_attach_unlinked" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "NSG_attach_unlinked" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__VisitedTable,  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "NSG_attach_unlinked" "', argument " "3"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_attach_unlinked" "', argument " "3"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::VisitedTable * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_faiss__VisitedTable,  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "NSG_attach_unlinked" "', argument " "4"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_attach_unlinked" "', argument " "4"" of type '" "faiss::VisitedTable &""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::VisitedTable * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5, SWIGTYPE_p_std__vectorT_int_t,  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "NSG_attach_unlinked" "', argument " "5"" of type '" "std::vector< int > &""'"); 
+  }
+  if (!argp5) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "NSG_attach_unlinked" "', argument " "5"" of type '" "std::vector< int > &""'"); 
+  }
+  arg5 = reinterpret_cast< std::vector< int > * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)(arg1)->attach_unlinked(arg2,*arg3,*arg4,*arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_NSG_check_graph(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "NSG_check_graph" "', argument " "1"" of type '" "faiss::NSG const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::NSG const *)arg1)->check_graph();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_NSG(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::NSG *arg1 = (faiss::NSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__NSG, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_NSG" "', argument " "1"" of type '" "faiss::NSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::NSG * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *NSG_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__NSG, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *NSG_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexNSG_nsg_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  faiss::NSG *arg2 = (faiss::NSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_nsg_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_nsg_set" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexNSG_nsg_set" "', argument " "2"" of type '" "faiss::NSG *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::NSG * >(argp2);
+  if (arg1) (arg1)->nsg = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_nsg_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::NSG *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_nsg_get" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  result = (faiss::NSG *)& ((arg1)->nsg);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__NSG, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_own_fields_set" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNSG_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_own_fields_get" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_storage_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_storage_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_storage_set" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexNSG_storage_set" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  if (arg1) (arg1)->storage = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_storage_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_storage_get" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  result = (faiss::Index *) ((arg1)->storage);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_is_built_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_is_built_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_is_built_set" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNSG_is_built_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->is_built = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_is_built_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_is_built_get" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  result = (bool) ((arg1)->is_built);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_GK_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_GK_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_GK_set" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNSG_GK_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->GK = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_GK_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_GK_get" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  result = (int) ((arg1)->GK);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_build_type_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  char arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  char val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_build_type_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_build_type_set" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  ecode2 = SWIG_AsVal_char(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNSG_build_type_set" "', argument " "2"" of type '" "char""'");
+  } 
+  arg2 = static_cast< char >(val2);
+  if (arg1) (arg1)->build_type = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_build_type_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  char result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_build_type_get" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  result = (char) ((arg1)->build_type);
+  resultobj = SWIG_From_char(static_cast< char >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_nndescent_S_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_nndescent_S_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_nndescent_S_set" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNSG_nndescent_S_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nndescent_S = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_nndescent_S_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_nndescent_S_get" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  result = (int) ((arg1)->nndescent_S);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_nndescent_R_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_nndescent_R_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_nndescent_R_set" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNSG_nndescent_R_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nndescent_R = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_nndescent_R_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_nndescent_R_get" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  result = (int) ((arg1)->nndescent_R);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_nndescent_L_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_nndescent_L_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_nndescent_L_set" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNSG_nndescent_L_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nndescent_L = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_nndescent_L_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_nndescent_L_get" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  result = (int) ((arg1)->nndescent_L);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_nndescent_iter_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_nndescent_iter_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_nndescent_iter_set" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNSG_nndescent_iter_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nndescent_iter = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_nndescent_iter_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_nndescent_iter_get" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  result = (int) ((arg1)->nndescent_iter);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNSG__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  faiss::MetricType arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexNSG *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexNSG" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexNSG" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexNSG" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNSG *)new faiss::IndexNSG(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNSG, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNSG__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexNSG *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexNSG" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexNSG" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNSG *)new faiss::IndexNSG(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNSG, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNSG__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexNSG *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexNSG" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNSG *)new faiss::IndexNSG(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNSG, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNSG__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNSG *)new faiss::IndexNSG();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNSG, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNSG__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexNSG *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexNSG" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexNSG" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNSG *)new faiss::IndexNSG(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNSG, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNSG__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexNSG *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexNSG" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNSG *)new faiss::IndexNSG(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNSG, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNSG(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexNSG", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexNSG__SWIG_3(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexNSG__SWIG_5(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexNSG__SWIG_2(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexNSG__SWIG_4(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexNSG__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexNSG__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexNSG'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexNSG::IndexNSG(int,int,faiss::MetricType)\n"
+    "    faiss::IndexNSG::IndexNSG(int,int)\n"
+    "    faiss::IndexNSG::IndexNSG(int)\n"
+    "    faiss::IndexNSG::IndexNSG()\n"
+    "    faiss::IndexNSG::IndexNSG(faiss::Index *,int)\n"
+    "    faiss::IndexNSG::IndexNSG(faiss::Index *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexNSG(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexNSG" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_build(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  int arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_build", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_build" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNSG_build" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexNSG_build" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexNSG_build" "', argument " "4"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "IndexNSG_build" "', argument " "5"" of type '" "int""'");
+  } 
+  arg5 = static_cast< int >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->build(arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_add" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNSG_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexNSG_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_train" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNSG_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexNSG_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_search" "', argument " "1"" of type '" "faiss::IndexNSG const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNSG_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexNSG_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexNSG_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexNSG_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexNSG_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexNSG const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_reconstruct" "', argument " "1"" of type '" "faiss::IndexNSG const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexNSG_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexNSG_reconstruct" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexNSG const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_reset" "', argument " "1"" of type '" "faiss::IndexNSG *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexNSG_check_knn_graph(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSG *arg1 = (faiss::IndexNSG *) 0 ;
+  faiss::Index::idx_t *arg2 = (faiss::Index::idx_t *) 0 ;
+  faiss::Index::idx_t arg3 ;
+  int arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexNSG_check_knn_graph", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSG, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexNSG_check_knn_graph" "', argument " "1"" of type '" "faiss::IndexNSG const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSG * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexNSG_check_knn_graph" "', argument " "2"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index::idx_t * >(argp2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexNSG_check_knn_graph" "', argument " "3"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::Index::idx_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexNSG_check_knn_graph" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexNSG const *)arg1)->check_knn_graph((faiss::Index::idx_t const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexNSG_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexNSG, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexNSG_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexNSGFlat__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSGFlat *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNSGFlat *)new faiss::IndexNSGFlat();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNSGFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNSGFlat__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  faiss::MetricType arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexNSGFlat *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexNSGFlat" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexNSGFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexNSGFlat" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNSGFlat *)new faiss::IndexNSGFlat(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNSGFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNSGFlat__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexNSGFlat *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexNSGFlat" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexNSGFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexNSGFlat *)new faiss::IndexNSGFlat(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexNSGFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexNSGFlat(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexNSGFlat", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexNSGFlat__SWIG_0(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexNSGFlat__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexNSGFlat__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexNSGFlat'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexNSGFlat::IndexNSGFlat()\n"
+    "    faiss::IndexNSGFlat::IndexNSGFlat(int,int,faiss::MetricType)\n"
+    "    faiss::IndexNSGFlat::IndexNSGFlat(int,int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexNSGFlat(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexNSGFlat *arg1 = (faiss::IndexNSGFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexNSGFlat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexNSGFlat" "', argument " "1"" of type '" "faiss::IndexNSGFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexNSGFlat * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexNSGFlat_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexNSGFlat, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexNSGFlat_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_OnDiskOneList_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskOneList *arg1 = (faiss::OnDiskOneList *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskOneList_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskOneList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskOneList_size_set" "', argument " "1"" of type '" "faiss::OnDiskOneList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskOneList * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskOneList_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskOneList_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskOneList *arg1 = (faiss::OnDiskOneList *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskOneList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskOneList_size_get" "', argument " "1"" of type '" "faiss::OnDiskOneList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskOneList * >(argp1);
+  result = (size_t) ((arg1)->size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskOneList_capacity_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskOneList *arg1 = (faiss::OnDiskOneList *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskOneList_capacity_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskOneList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskOneList_capacity_set" "', argument " "1"" of type '" "faiss::OnDiskOneList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskOneList * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskOneList_capacity_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->capacity = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskOneList_capacity_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskOneList *arg1 = (faiss::OnDiskOneList *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskOneList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskOneList_capacity_get" "', argument " "1"" of type '" "faiss::OnDiskOneList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskOneList * >(argp1);
+  result = (size_t) ((arg1)->capacity);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskOneList_offset_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskOneList *arg1 = (faiss::OnDiskOneList *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskOneList_offset_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskOneList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskOneList_offset_set" "', argument " "1"" of type '" "faiss::OnDiskOneList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskOneList * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskOneList_offset_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->offset = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskOneList_offset_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskOneList *arg1 = (faiss::OnDiskOneList *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskOneList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskOneList_offset_get" "', argument " "1"" of type '" "faiss::OnDiskOneList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskOneList * >(argp1);
+  result = (size_t) ((arg1)->offset);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_OnDiskOneList(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskOneList *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_OnDiskOneList", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::OnDiskOneList *)new faiss::OnDiskOneList();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__OnDiskOneList, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_OnDiskOneList(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskOneList *arg1 = (faiss::OnDiskOneList *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskOneList, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_OnDiskOneList" "', argument " "1"" of type '" "faiss::OnDiskOneList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskOneList * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *OnDiskOneList_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__OnDiskOneList, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *OnDiskOneList_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_lists_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  std::vector< faiss::OnDiskInvertedLists::List > *arg2 = (std::vector< faiss::OnDiskInvertedLists::List > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_lists_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_lists_set" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskInvertedLists_lists_set" "', argument " "2"" of type '" "std::vector< faiss::OnDiskInvertedLists::List > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::OnDiskInvertedLists::List > * >(argp2);
+  if (arg1) (arg1)->lists = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_lists_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::OnDiskInvertedLists::List > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_lists_get" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  result = (std::vector< faiss::OnDiskInvertedLists::List > *)& ((arg1)->lists);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__OnDiskOneList_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_slots_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  std::list< faiss::OnDiskInvertedLists::Slot > *arg2 = (std::list< faiss::OnDiskInvertedLists::Slot > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_slots_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_slots_set" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__listT_faiss__OnDiskInvertedLists__Slot_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskInvertedLists_slots_set" "', argument " "2"" of type '" "std::list< faiss::OnDiskInvertedLists::Slot > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::list< faiss::OnDiskInvertedLists::Slot > * >(argp2);
+  if (arg1) (arg1)->slots = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_slots_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::list< faiss::OnDiskInvertedLists::Slot > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_slots_get" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  result = (std::list< faiss::OnDiskInvertedLists::Slot > *)& ((arg1)->slots);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__listT_faiss__OnDiskInvertedLists__Slot_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_filename_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  std::string *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 = SWIG_OLDOBJ ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_filename_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_filename_set" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  {
+    std::string *ptr = (std::string *)0;
+    res2 = SWIG_AsPtr_std_string(swig_obj[1], &ptr);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskInvertedLists_filename_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "OnDiskInvertedLists_filename_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    arg2 = ptr;
+  }
+  if (arg1) (arg1)->filename = *arg2;
+  resultobj = SWIG_Py_Void();
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_filename_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_filename_get" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  result = (std::string *) & ((arg1)->filename);
+  resultobj = SWIG_From_std_string(static_cast< std::string >(*result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_totsize_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_totsize_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_totsize_set" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_totsize_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->totsize = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_totsize_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_totsize_get" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  result = (size_t) ((arg1)->totsize);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_ptr_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_ptr_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_ptr_set" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskInvertedLists_ptr_set" "', argument " "2"" of type '" "uint8_t *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  if (arg1) (arg1)->ptr = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_ptr_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint8_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_ptr_get" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  result = (uint8_t *) ((arg1)->ptr);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_read_only_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_read_only_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_read_only_set" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_read_only_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->read_only = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_read_only_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_read_only_get" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  result = (bool) ((arg1)->read_only);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_OnDiskInvertedLists__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  char *arg3 = (char *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  int res3 ;
+  char *buf3 = 0 ;
+  int alloc3 = 0 ;
+  faiss::OnDiskInvertedLists *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_OnDiskInvertedLists" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_OnDiskInvertedLists" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_AsCharPtrAndSize(swig_obj[2], &buf3, NULL, &alloc3);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_OnDiskInvertedLists" "', argument " "3"" of type '" "char const *""'");
+  }
+  arg3 = reinterpret_cast< char * >(buf3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::OnDiskInvertedLists *)new faiss::OnDiskInvertedLists(arg1,arg2,(char const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__OnDiskInvertedLists, SWIG_POINTER_NEW |  0 );
+  if (alloc3 == SWIG_NEWOBJ) delete[] buf3;
+  return resultobj;
+fail:
+  if (alloc3 == SWIG_NEWOBJ) delete[] buf3;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_list_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_list_size", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_list_size" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_list_size" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::OnDiskInvertedLists const *)arg1)->list_size(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_get_codes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint8_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_get_codes", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_get_codes" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_get_codes" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint8_t *)((faiss::OnDiskInvertedLists const *)arg1)->get_codes(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_get_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedLists::idx_t *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_get_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_get_ids" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_get_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists::idx_t *)((faiss::OnDiskInvertedLists const *)arg1)->get_ids(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_add_entries(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::InvertedLists::idx_t *arg4 = (faiss::InvertedLists::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_add_entries", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_add_entries" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_add_entries" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "OnDiskInvertedLists_add_entries" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "OnDiskInvertedLists_add_entries" "', argument " "4"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "OnDiskInvertedLists_add_entries" "', argument " "5"" of type '" "uint8_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->add_entries(arg2,arg3,(faiss::InvertedLists::idx_t const *)arg4,(uint8_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_update_entries(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  faiss::InvertedLists::idx_t *arg5 = (faiss::InvertedLists::idx_t *) 0 ;
+  uint8_t *arg6 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_update_entries", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_update_entries" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_update_entries" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "OnDiskInvertedLists_update_entries" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "OnDiskInvertedLists_update_entries" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "OnDiskInvertedLists_update_entries" "', argument " "5"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "OnDiskInvertedLists_update_entries" "', argument " "6"" of type '" "uint8_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< uint8_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->update_entries(arg2,arg3,arg4,(faiss::InvertedLists::idx_t const *)arg5,(uint8_t const *)arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_resize", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_resize" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "OnDiskInvertedLists_resize" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_merge_from__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  faiss::InvertedLists **arg2 = (faiss::InvertedLists **) 0 ;
+  int arg3 ;
+  bool arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  bool val4 ;
+  int ecode4 = 0 ;
+  size_t result;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_merge_from" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskInvertedLists_merge_from" "', argument " "2"" of type '" "faiss::InvertedLists const **""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists ** >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "OnDiskInvertedLists_merge_from" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_bool(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "OnDiskInvertedLists_merge_from" "', argument " "4"" of type '" "bool""'");
+  } 
+  arg4 = static_cast< bool >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->merge_from((faiss::InvertedLists const **)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_merge_from__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  faiss::InvertedLists **arg2 = (faiss::InvertedLists **) 0 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  size_t result;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_merge_from" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskInvertedLists_merge_from" "', argument " "2"" of type '" "faiss::InvertedLists const **""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists ** >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "OnDiskInvertedLists_merge_from" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->merge_from((faiss::InvertedLists const **)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_merge_from(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_merge_from", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__OnDiskInvertedLists, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_p_faiss__InvertedLists, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_OnDiskInvertedLists_merge_from__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__OnDiskInvertedLists, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_p_faiss__InvertedLists, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_bool(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_OnDiskInvertedLists_merge_from__SWIG_0(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'OnDiskInvertedLists_merge_from'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::OnDiskInvertedLists::merge_from(faiss::InvertedLists const **,int,bool)\n"
+    "    faiss::OnDiskInvertedLists::merge_from(faiss::InvertedLists const **,int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_merge_from_1__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  bool arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  size_t result;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_merge_from_1" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskInvertedLists_merge_from_1" "', argument " "2"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "OnDiskInvertedLists_merge_from_1" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->merge_from_1((faiss::InvertedLists const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_merge_from_1__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t result;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_merge_from_1" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskInvertedLists_merge_from_1" "', argument " "2"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->merge_from_1((faiss::InvertedLists const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_merge_from_1(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_merge_from_1", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__OnDiskInvertedLists, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__InvertedLists, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_OnDiskInvertedLists_merge_from_1__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__OnDiskInvertedLists, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__InvertedLists, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_OnDiskInvertedLists_merge_from_1__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'OnDiskInvertedLists_merge_from_1'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::OnDiskInvertedLists::merge_from_1(faiss::InvertedLists const *,bool)\n"
+    "    faiss::OnDiskInvertedLists::merge_from_1(faiss::InvertedLists const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_crop_invlists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_crop_invlists", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_crop_invlists" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_crop_invlists" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "OnDiskInvertedLists_crop_invlists" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->crop_invlists(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_prefetch_lists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  faiss::InvertedLists::idx_t *arg2 = (faiss::InvertedLists::idx_t *) 0 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_prefetch_lists", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_prefetch_lists" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskInvertedLists_prefetch_lists" "', argument " "2"" of type '" "faiss::InvertedLists::idx_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists::idx_t * >(argp2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "OnDiskInvertedLists_prefetch_lists" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::OnDiskInvertedLists const *)arg1)->prefetch_lists((faiss::InvertedLists::idx_t const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_OnDiskInvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_OnDiskInvertedLists" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_locks_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  faiss::LockLevels *arg2 = (faiss::LockLevels *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_locks_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_locks_set" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__LockLevels, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskInvertedLists_locks_set" "', argument " "2"" of type '" "faiss::LockLevels *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::LockLevels * >(argp2);
+  if (arg1) (arg1)->locks = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_locks_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::LockLevels *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_locks_get" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  result = (faiss::LockLevels *) ((arg1)->locks);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__LockLevels, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_pf_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  faiss::OnDiskInvertedLists::OngoingPrefetch *arg2 = (faiss::OnDiskInvertedLists::OngoingPrefetch *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_pf_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_pf_set" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__OnDiskInvertedLists__OngoingPrefetch, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskInvertedLists_pf_set" "', argument " "2"" of type '" "faiss::OnDiskInvertedLists::OngoingPrefetch *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::OnDiskInvertedLists::OngoingPrefetch * >(argp2);
+  if (arg1) (arg1)->pf = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_pf_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::OnDiskInvertedLists::OngoingPrefetch *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_pf_get" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  result = (faiss::OnDiskInvertedLists::OngoingPrefetch *) ((arg1)->pf);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__OnDiskInvertedLists__OngoingPrefetch, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_prefetch_nthread_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_prefetch_nthread_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_prefetch_nthread_set" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_prefetch_nthread_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->prefetch_nthread = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_prefetch_nthread_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_prefetch_nthread_get" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  result = (int) ((arg1)->prefetch_nthread);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_do_mmap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_do_mmap" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->do_mmap();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_update_totsize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_update_totsize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_update_totsize" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_update_totsize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->update_totsize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_resize_locked(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_resize_locked", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_resize_locked" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_resize_locked" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "OnDiskInvertedLists_resize_locked" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->resize_locked(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_allocate_slot(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_allocate_slot", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_allocate_slot" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_allocate_slot" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->allocate_slot(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_free_slot(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_free_slot", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_free_slot" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OnDiskInvertedLists_free_slot" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "OnDiskInvertedLists_free_slot" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->free_slot(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OnDiskInvertedLists_set_all_lists_sizes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *arg1 = (faiss::OnDiskInvertedLists *) 0 ;
+  size_t *arg2 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OnDiskInvertedLists_set_all_lists_sizes", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OnDiskInvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OnDiskInvertedLists_set_all_lists_sizes" "', argument " "1"" of type '" "faiss::OnDiskInvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OnDiskInvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OnDiskInvertedLists_set_all_lists_sizes" "', argument " "2"" of type '" "size_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< size_t * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_all_lists_sizes((size_t const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_OnDiskInvertedLists__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::OnDiskInvertedLists *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::OnDiskInvertedLists *)new faiss::OnDiskInvertedLists();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__OnDiskInvertedLists, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_OnDiskInvertedLists(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_OnDiskInvertedLists", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_OnDiskInvertedLists__SWIG_1(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        int res = SWIG_AsCharPtrAndSize(argv[2], 0, NULL, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_OnDiskInvertedLists__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_OnDiskInvertedLists'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::OnDiskInvertedLists::OnDiskInvertedLists(size_t,size_t,char const *)\n"
+    "    faiss::OnDiskInvertedLists::OnDiskInvertedLists()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *OnDiskInvertedLists_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__OnDiskInvertedLists, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *OnDiskInvertedLists_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ZnSphereSearch_dimS_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereSearch *arg1 = (faiss::ZnSphereSearch *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereSearch_dimS_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereSearch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereSearch_dimS_set" "', argument " "1"" of type '" "faiss::ZnSphereSearch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereSearch * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereSearch_dimS_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->dimS = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereSearch_dimS_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereSearch *arg1 = (faiss::ZnSphereSearch *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereSearch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereSearch_dimS_get" "', argument " "1"" of type '" "faiss::ZnSphereSearch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereSearch * >(argp1);
+  result = (int) ((arg1)->dimS);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereSearch_r2_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereSearch *arg1 = (faiss::ZnSphereSearch *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereSearch_r2_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereSearch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereSearch_r2_set" "', argument " "1"" of type '" "faiss::ZnSphereSearch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereSearch * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereSearch_r2_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->r2 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereSearch_r2_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereSearch *arg1 = (faiss::ZnSphereSearch *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereSearch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereSearch_r2_get" "', argument " "1"" of type '" "faiss::ZnSphereSearch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereSearch * >(argp1);
+  result = (int) ((arg1)->r2);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereSearch_natom_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereSearch *arg1 = (faiss::ZnSphereSearch *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereSearch_natom_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereSearch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereSearch_natom_set" "', argument " "1"" of type '" "faiss::ZnSphereSearch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereSearch * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereSearch_natom_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->natom = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereSearch_natom_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereSearch *arg1 = (faiss::ZnSphereSearch *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereSearch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereSearch_natom_get" "', argument " "1"" of type '" "faiss::ZnSphereSearch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereSearch * >(argp1);
+  result = (int) ((arg1)->natom);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereSearch_voc_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereSearch *arg1 = (faiss::ZnSphereSearch *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereSearch_voc_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereSearch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereSearch_voc_set" "', argument " "1"" of type '" "faiss::ZnSphereSearch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereSearch * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereSearch_voc_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->voc = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereSearch_voc_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereSearch *arg1 = (faiss::ZnSphereSearch *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereSearch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereSearch_voc_get" "', argument " "1"" of type '" "faiss::ZnSphereSearch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereSearch * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->voc);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ZnSphereSearch(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::ZnSphereSearch *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ZnSphereSearch", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ZnSphereSearch" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ZnSphereSearch" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ZnSphereSearch *)new faiss::ZnSphereSearch(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ZnSphereSearch, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereSearch_search__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereSearch *arg1 = (faiss::ZnSphereSearch *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float result;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereSearch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereSearch_search" "', argument " "1"" of type '" "faiss::ZnSphereSearch const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereSearch * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereSearch_search" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ZnSphereSearch_search" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)((faiss::ZnSphereSearch const *)arg1)->search((float const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereSearch_search__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereSearch *arg1 = (faiss::ZnSphereSearch *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  int *arg5 = (int *) 0 ;
+  int *arg6 = (int *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  float result;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereSearch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereSearch_search" "', argument " "1"" of type '" "faiss::ZnSphereSearch const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereSearch * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereSearch_search" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ZnSphereSearch_search" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ZnSphereSearch_search" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "ZnSphereSearch_search" "', argument " "5"" of type '" "int *""'"); 
+  }
+  arg5 = reinterpret_cast< int * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ZnSphereSearch_search" "', argument " "6"" of type '" "int *""'"); 
+  }
+  arg6 = reinterpret_cast< int * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)((faiss::ZnSphereSearch const *)arg1)->search((float const *)arg2,arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereSearch_search__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereSearch *arg1 = (faiss::ZnSphereSearch *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  int *arg5 = (int *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  float result;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereSearch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereSearch_search" "', argument " "1"" of type '" "faiss::ZnSphereSearch const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereSearch * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereSearch_search" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ZnSphereSearch_search" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ZnSphereSearch_search" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "ZnSphereSearch_search" "', argument " "5"" of type '" "int *""'"); 
+  }
+  arg5 = reinterpret_cast< int * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)((faiss::ZnSphereSearch const *)arg1)->search((float const *)arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereSearch_search(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ZnSphereSearch_search", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ZnSphereSearch, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_float, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_ZnSphereSearch_search__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ZnSphereSearch, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_float, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_int, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_ZnSphereSearch_search__SWIG_2(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ZnSphereSearch, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_float, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_int, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_int, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_ZnSphereSearch_search__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ZnSphereSearch_search'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ZnSphereSearch::search(float const *,float *) const\n"
+    "    faiss::ZnSphereSearch::search(float const *,float *,float *,int *,int *) const\n"
+    "    faiss::ZnSphereSearch::search(float const *,float *,float *,int *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereSearch_search_multi(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereSearch *arg1 = (faiss::ZnSphereSearch *) 0 ;
+  int arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  float *arg5 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereSearch_search_multi", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereSearch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereSearch_search_multi" "', argument " "1"" of type '" "faiss::ZnSphereSearch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereSearch * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereSearch_search_multi" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ZnSphereSearch_search_multi" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ZnSphereSearch_search_multi" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "ZnSphereSearch_search_multi" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->search_multi(arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ZnSphereSearch(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereSearch *arg1 = (faiss::ZnSphereSearch *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereSearch, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ZnSphereSearch" "', argument " "1"" of type '" "faiss::ZnSphereSearch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereSearch * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ZnSphereSearch_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ZnSphereSearch, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ZnSphereSearch_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_EnumeratedVectors_nv_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::EnumeratedVectors *arg1 = (faiss::EnumeratedVectors *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "EnumeratedVectors_nv_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__EnumeratedVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "EnumeratedVectors_nv_set" "', argument " "1"" of type '" "faiss::EnumeratedVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::EnumeratedVectors * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "EnumeratedVectors_nv_set" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  if (arg1) (arg1)->nv = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_EnumeratedVectors_nv_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::EnumeratedVectors *arg1 = (faiss::EnumeratedVectors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__EnumeratedVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "EnumeratedVectors_nv_get" "', argument " "1"" of type '" "faiss::EnumeratedVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::EnumeratedVectors * >(argp1);
+  result = (uint64_t) ((arg1)->nv);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_EnumeratedVectors_dim_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::EnumeratedVectors *arg1 = (faiss::EnumeratedVectors *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "EnumeratedVectors_dim_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__EnumeratedVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "EnumeratedVectors_dim_set" "', argument " "1"" of type '" "faiss::EnumeratedVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::EnumeratedVectors * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "EnumeratedVectors_dim_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->dim = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_EnumeratedVectors_dim_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::EnumeratedVectors *arg1 = (faiss::EnumeratedVectors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__EnumeratedVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "EnumeratedVectors_dim_get" "', argument " "1"" of type '" "faiss::EnumeratedVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::EnumeratedVectors * >(argp1);
+  result = (int) ((arg1)->dim);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_EnumeratedVectors_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::EnumeratedVectors *arg1 = (faiss::EnumeratedVectors *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "EnumeratedVectors_encode", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__EnumeratedVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "EnumeratedVectors_encode" "', argument " "1"" of type '" "faiss::EnumeratedVectors const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::EnumeratedVectors * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "EnumeratedVectors_encode" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)((faiss::EnumeratedVectors const *)arg1)->encode((float const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_EnumeratedVectors_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::EnumeratedVectors *arg1 = (faiss::EnumeratedVectors *) 0 ;
+  uint64_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "EnumeratedVectors_decode", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__EnumeratedVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "EnumeratedVectors_decode" "', argument " "1"" of type '" "faiss::EnumeratedVectors const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::EnumeratedVectors * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "EnumeratedVectors_decode" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "EnumeratedVectors_decode" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::EnumeratedVectors const *)arg1)->decode(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_EnumeratedVectors_encode_multi(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::EnumeratedVectors *arg1 = (faiss::EnumeratedVectors *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint64_t *arg4 = (uint64_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "EnumeratedVectors_encode_multi", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__EnumeratedVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "EnumeratedVectors_encode_multi" "', argument " "1"" of type '" "faiss::EnumeratedVectors const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::EnumeratedVectors * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "EnumeratedVectors_encode_multi" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "EnumeratedVectors_encode_multi" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "EnumeratedVectors_encode_multi" "', argument " "4"" of type '" "uint64_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint64_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::EnumeratedVectors const *)arg1)->encode_multi(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_EnumeratedVectors_decode_multi(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::EnumeratedVectors *arg1 = (faiss::EnumeratedVectors *) 0 ;
+  size_t arg2 ;
+  uint64_t *arg3 = (uint64_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "EnumeratedVectors_decode_multi", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__EnumeratedVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "EnumeratedVectors_decode_multi" "', argument " "1"" of type '" "faiss::EnumeratedVectors const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::EnumeratedVectors * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "EnumeratedVectors_decode_multi" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "EnumeratedVectors_decode_multi" "', argument " "3"" of type '" "uint64_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint64_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "EnumeratedVectors_decode_multi" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::EnumeratedVectors const *)arg1)->decode_multi(arg2,(uint64_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_EnumeratedVectors_find_nn(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::EnumeratedVectors *arg1 = (faiss::EnumeratedVectors *) 0 ;
+  size_t arg2 ;
+  uint64_t *arg3 = (uint64_t *) 0 ;
+  size_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  int64_t *arg6 = (int64_t *) 0 ;
+  float *arg7 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "EnumeratedVectors_find_nn", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__EnumeratedVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "EnumeratedVectors_find_nn" "', argument " "1"" of type '" "faiss::EnumeratedVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::EnumeratedVectors * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "EnumeratedVectors_find_nn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "EnumeratedVectors_find_nn" "', argument " "3"" of type '" "uint64_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint64_t * >(argp3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "EnumeratedVectors_find_nn" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "EnumeratedVectors_find_nn" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "EnumeratedVectors_find_nn" "', argument " "6"" of type '" "int64_t *""'"); 
+  }
+  arg6 = reinterpret_cast< int64_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "EnumeratedVectors_find_nn" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->find_nn(arg2,(uint64_t const *)arg3,arg4,(float const *)arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_EnumeratedVectors(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::EnumeratedVectors *arg1 = (faiss::EnumeratedVectors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__EnumeratedVectors, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_EnumeratedVectors" "', argument " "1"" of type '" "faiss::EnumeratedVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::EnumeratedVectors * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *EnumeratedVectors_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__EnumeratedVectors, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_Repeat_val_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeat *arg1 = (faiss::Repeat *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Repeat_val_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Repeat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Repeat_val_set" "', argument " "1"" of type '" "faiss::Repeat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Repeat * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Repeat_val_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->val = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Repeat_val_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeat *arg1 = (faiss::Repeat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Repeat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Repeat_val_get" "', argument " "1"" of type '" "faiss::Repeat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Repeat * >(argp1);
+  result = (float) ((arg1)->val);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Repeat_n_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeat *arg1 = (faiss::Repeat *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Repeat_n_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Repeat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Repeat_n_set" "', argument " "1"" of type '" "faiss::Repeat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Repeat * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Repeat_n_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->n = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Repeat_n_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeat *arg1 = (faiss::Repeat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Repeat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Repeat_n_get" "', argument " "1"" of type '" "faiss::Repeat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Repeat * >(argp1);
+  result = (int) ((arg1)->n);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Repeat(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeat *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_Repeat", 0, 0, 0)) SWIG_fail;
+  result = (faiss::Repeat *)new faiss::Repeat();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Repeat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Repeat(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeat *arg1 = (faiss::Repeat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Repeat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Repeat" "', argument " "1"" of type '" "faiss::Repeat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Repeat * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Repeat_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__Repeat, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Repeat_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_Repeats_dim_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeats *arg1 = (faiss::Repeats *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Repeats_dim_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Repeats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Repeats_dim_set" "', argument " "1"" of type '" "faiss::Repeats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Repeats * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Repeats_dim_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->dim = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Repeats_dim_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeats *arg1 = (faiss::Repeats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Repeats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Repeats_dim_get" "', argument " "1"" of type '" "faiss::Repeats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Repeats * >(argp1);
+  result = (int) ((arg1)->dim);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Repeats_repeats_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeats *arg1 = (faiss::Repeats *) 0 ;
+  std::vector< faiss::Repeat > *arg2 = (std::vector< faiss::Repeat > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Repeats_repeats_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Repeats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Repeats_repeats_set" "', argument " "1"" of type '" "faiss::Repeats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Repeats * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__Repeat_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Repeats_repeats_set" "', argument " "2"" of type '" "std::vector< faiss::Repeat > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::Repeat > * >(argp2);
+  if (arg1) (arg1)->repeats = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Repeats_repeats_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeats *arg1 = (faiss::Repeats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::Repeat > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Repeats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Repeats_repeats_get" "', argument " "1"" of type '" "faiss::Repeats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Repeats * >(argp1);
+  result = (std::vector< faiss::Repeat > *)& ((arg1)->repeats);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__Repeat_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Repeats__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  float *arg2 = (float *) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::Repeats *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_Repeats" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_Repeats" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Repeats *)new faiss::Repeats(arg1,(float const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Repeats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Repeats__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::Repeats *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_Repeats" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Repeats *)new faiss::Repeats(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Repeats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Repeats__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::Repeats *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Repeats *)new faiss::Repeats();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Repeats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Repeats(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_Repeats", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_Repeats__SWIG_2(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_Repeats__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_float, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_Repeats__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_Repeats'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::Repeats::Repeats(int,float const *)\n"
+    "    faiss::Repeats::Repeats(int)\n"
+    "    faiss::Repeats::Repeats()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_Repeats_count(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeats *arg1 = (faiss::Repeats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Repeats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Repeats_count" "', argument " "1"" of type '" "faiss::Repeats const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Repeats * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)((faiss::Repeats const *)arg1)->count();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Repeats_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeats *arg1 = (faiss::Repeats *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Repeats_encode", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Repeats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Repeats_encode" "', argument " "1"" of type '" "faiss::Repeats const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Repeats * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Repeats_encode" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)((faiss::Repeats const *)arg1)->encode((float const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Repeats_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeats *arg1 = (faiss::Repeats *) 0 ;
+  uint64_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Repeats_decode", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Repeats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Repeats_decode" "', argument " "1"" of type '" "faiss::Repeats const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Repeats * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Repeats_decode" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Repeats_decode" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Repeats const *)arg1)->decode(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Repeats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Repeats *arg1 = (faiss::Repeats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Repeats, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Repeats" "', argument " "1"" of type '" "faiss::Repeats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Repeats * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Repeats_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__Repeats, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Repeats_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodec_code_segments_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodec *arg1 = (faiss::ZnSphereCodec *) 0 ;
+  std::vector< faiss::ZnSphereCodec::CodeSegment > *arg2 = (std::vector< faiss::ZnSphereCodec::CodeSegment > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodec_code_segments_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodec_code_segments_set" "', argument " "1"" of type '" "faiss::ZnSphereCodec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodec * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__ZnSphereCodec__CodeSegment_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereCodec_code_segments_set" "', argument " "2"" of type '" "std::vector< faiss::ZnSphereCodec::CodeSegment > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::ZnSphereCodec::CodeSegment > * >(argp2);
+  if (arg1) (arg1)->code_segments = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodec_code_segments_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodec *arg1 = (faiss::ZnSphereCodec *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::ZnSphereCodec::CodeSegment > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodec_code_segments_get" "', argument " "1"" of type '" "faiss::ZnSphereCodec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodec * >(argp1);
+  result = (std::vector< faiss::ZnSphereCodec::CodeSegment > *)& ((arg1)->code_segments);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__ZnSphereCodec__CodeSegment_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodec_nv_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodec *arg1 = (faiss::ZnSphereCodec *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodec_nv_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodec_nv_set" "', argument " "1"" of type '" "faiss::ZnSphereCodec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodec * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereCodec_nv_set" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  if (arg1) (arg1)->nv = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodec_nv_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodec *arg1 = (faiss::ZnSphereCodec *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodec_nv_get" "', argument " "1"" of type '" "faiss::ZnSphereCodec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodec * >(argp1);
+  result = (uint64_t) ((arg1)->nv);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodec_code_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodec *arg1 = (faiss::ZnSphereCodec *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodec_code_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodec_code_size_set" "', argument " "1"" of type '" "faiss::ZnSphereCodec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodec * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereCodec_code_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->code_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodec_code_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodec *arg1 = (faiss::ZnSphereCodec *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodec_code_size_get" "', argument " "1"" of type '" "faiss::ZnSphereCodec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodec * >(argp1);
+  result = (size_t) ((arg1)->code_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ZnSphereCodec(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::ZnSphereCodec *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ZnSphereCodec", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ZnSphereCodec" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ZnSphereCodec" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ZnSphereCodec *)new faiss::ZnSphereCodec(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ZnSphereCodec, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodec_search_and_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodec *arg1 = (faiss::ZnSphereCodec *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodec_search_and_encode", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodec_search_and_encode" "', argument " "1"" of type '" "faiss::ZnSphereCodec const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodec * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereCodec_search_and_encode" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)((faiss::ZnSphereCodec const *)arg1)->search_and_encode((float const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodec_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodec *arg1 = (faiss::ZnSphereCodec *) 0 ;
+  uint64_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodec_decode", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodec_decode" "', argument " "1"" of type '" "faiss::ZnSphereCodec const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodec * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereCodec_decode" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ZnSphereCodec_decode" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ZnSphereCodec const *)arg1)->decode(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodec_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodec *arg1 = (faiss::ZnSphereCodec *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodec_encode", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodec_encode" "', argument " "1"" of type '" "faiss::ZnSphereCodec const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodec * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereCodec_encode" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)((faiss::ZnSphereCodec const *)arg1)->encode((float const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ZnSphereCodec(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodec *arg1 = (faiss::ZnSphereCodec *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodec, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ZnSphereCodec" "', argument " "1"" of type '" "faiss::ZnSphereCodec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodec * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ZnSphereCodec_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ZnSphereCodec, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ZnSphereCodec_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_r2_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecRec_r2_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_r2_set" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereCodecRec_r2_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->r2 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_r2_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_r2_get" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  result = (int) ((arg1)->r2);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_log2_dim_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecRec_log2_dim_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_log2_dim_set" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereCodecRec_log2_dim_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->log2_dim = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_log2_dim_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_log2_dim_get" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  result = (int) ((arg1)->log2_dim);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_code_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecRec_code_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_code_size_set" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereCodecRec_code_size_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->code_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_code_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_code_size_get" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  result = (int) ((arg1)->code_size);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ZnSphereCodecRec(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::ZnSphereCodecRec *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ZnSphereCodecRec", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ZnSphereCodecRec" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ZnSphereCodecRec" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ZnSphereCodecRec *)new faiss::ZnSphereCodecRec(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ZnSphereCodecRec, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_encode_centroid(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecRec_encode_centroid", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_encode_centroid" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereCodecRec_encode_centroid" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)((faiss::ZnSphereCodecRec const *)arg1)->encode_centroid((float const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  uint64_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecRec_decode", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_decode" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereCodecRec_decode" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ZnSphereCodecRec_decode" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ZnSphereCodecRec const *)arg1)->decode(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecRec_encode", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_encode" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereCodecRec_encode" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)((faiss::ZnSphereCodecRec const *)arg1)->encode((float const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_all_nv_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  std::vector< uint64_t > *arg2 = (std::vector< uint64_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecRec_all_nv_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_all_nv_set" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereCodecRec_all_nv_set" "', argument " "2"" of type '" "std::vector< uint64_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< uint64_t > * >(argp2);
+  if (arg1) (arg1)->all_nv = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_all_nv_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< uint64_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_all_nv_get" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  result = (std::vector< uint64_t > *)& ((arg1)->all_nv);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_all_nv_cum_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  std::vector< uint64_t > *arg2 = (std::vector< uint64_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecRec_all_nv_cum_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_all_nv_cum_set" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereCodecRec_all_nv_cum_set" "', argument " "2"" of type '" "std::vector< uint64_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< uint64_t > * >(argp2);
+  if (arg1) (arg1)->all_nv_cum = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_all_nv_cum_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< uint64_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_all_nv_cum_get" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  result = (std::vector< uint64_t > *)& ((arg1)->all_nv_cum);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_long_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_decode_cache_ld_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecRec_decode_cache_ld_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_decode_cache_ld_set" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereCodecRec_decode_cache_ld_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->decode_cache_ld = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_decode_cache_ld_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_decode_cache_ld_get" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  result = (int) ((arg1)->decode_cache_ld);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_decode_cache_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  std::vector< std::vector< float > > *arg2 = (std::vector< std::vector< float > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecRec_decode_cache_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_decode_cache_set" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereCodecRec_decode_cache_set" "', argument " "2"" of type '" "std::vector< std::vector< float > > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< std::vector< float > > * >(argp2);
+  if (arg1) (arg1)->decode_cache = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_decode_cache_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< std::vector< float > > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_decode_cache_get" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  result = (std::vector< std::vector< float > > *)& ((arg1)->decode_cache);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_std__vectorT_float_t_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_get_nv(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  int arg2 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  uint64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecRec_get_nv", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_get_nv" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereCodecRec_get_nv" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ZnSphereCodecRec_get_nv" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)((faiss::ZnSphereCodecRec const *)arg1)->get_nv(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_get_nv_cum(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  int arg2 ;
+  int arg3 ;
+  int arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  uint64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecRec_get_nv_cum", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_get_nv_cum" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereCodecRec_get_nv_cum" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ZnSphereCodecRec_get_nv_cum" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ZnSphereCodecRec_get_nv_cum" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)((faiss::ZnSphereCodecRec const *)arg1)->get_nv_cum(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecRec_set_nv_cum(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  int arg2 ;
+  int arg3 ;
+  int arg4 ;
+  uint64_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  unsigned long val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecRec_set_nv_cum", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecRec_set_nv_cum" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereCodecRec_set_nv_cum" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ZnSphereCodecRec_set_nv_cum" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ZnSphereCodecRec_set_nv_cum" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  ecode5 = SWIG_AsVal_unsigned_SS_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ZnSphereCodecRec_set_nv_cum" "', argument " "5"" of type '" "uint64_t""'");
+  } 
+  arg5 = static_cast< uint64_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_nv_cum(arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ZnSphereCodecRec(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecRec *arg1 = (faiss::ZnSphereCodecRec *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecRec, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ZnSphereCodecRec" "', argument " "1"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ZnSphereCodecRec_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ZnSphereCodecRec, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ZnSphereCodecRec_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecAlt_use_rec_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecAlt *arg1 = (faiss::ZnSphereCodecAlt *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecAlt_use_rec_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecAlt, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecAlt_use_rec_set" "', argument " "1"" of type '" "faiss::ZnSphereCodecAlt *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecAlt * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereCodecAlt_use_rec_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->use_rec = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecAlt_use_rec_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecAlt *arg1 = (faiss::ZnSphereCodecAlt *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecAlt, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecAlt_use_rec_get" "', argument " "1"" of type '" "faiss::ZnSphereCodecAlt *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecAlt * >(argp1);
+  result = (bool) ((arg1)->use_rec);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecAlt_znc_rec_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecAlt *arg1 = (faiss::ZnSphereCodecAlt *) 0 ;
+  faiss::ZnSphereCodecRec *arg2 = (faiss::ZnSphereCodecRec *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecAlt_znc_rec_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecAlt, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecAlt_znc_rec_set" "', argument " "1"" of type '" "faiss::ZnSphereCodecAlt *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecAlt * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereCodecAlt_znc_rec_set" "', argument " "2"" of type '" "faiss::ZnSphereCodecRec *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ZnSphereCodecRec * >(argp2);
+  if (arg1) (arg1)->znc_rec = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecAlt_znc_rec_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecAlt *arg1 = (faiss::ZnSphereCodecAlt *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ZnSphereCodecRec *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecAlt, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecAlt_znc_rec_get" "', argument " "1"" of type '" "faiss::ZnSphereCodecAlt *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecAlt * >(argp1);
+  result = (faiss::ZnSphereCodecRec *)& ((arg1)->znc_rec);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ZnSphereCodecRec, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ZnSphereCodecAlt(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::ZnSphereCodecAlt *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ZnSphereCodecAlt", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_ZnSphereCodecAlt" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ZnSphereCodecAlt" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ZnSphereCodecAlt *)new faiss::ZnSphereCodecAlt(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ZnSphereCodecAlt, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecAlt_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecAlt *arg1 = (faiss::ZnSphereCodecAlt *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  uint64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecAlt_encode", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecAlt, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecAlt_encode" "', argument " "1"" of type '" "faiss::ZnSphereCodecAlt const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecAlt * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ZnSphereCodecAlt_encode" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (uint64_t)((faiss::ZnSphereCodecAlt const *)arg1)->encode((float const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ZnSphereCodecAlt_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecAlt *arg1 = (faiss::ZnSphereCodecAlt *) 0 ;
+  uint64_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ZnSphereCodecAlt_decode", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecAlt, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ZnSphereCodecAlt_decode" "', argument " "1"" of type '" "faiss::ZnSphereCodecAlt const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecAlt * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ZnSphereCodecAlt_decode" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ZnSphereCodecAlt_decode" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ZnSphereCodecAlt const *)arg1)->decode(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ZnSphereCodecAlt(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ZnSphereCodecAlt *arg1 = (faiss::ZnSphereCodecAlt *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ZnSphereCodecAlt, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ZnSphereCodecAlt" "', argument " "1"" of type '" "faiss::ZnSphereCodecAlt *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ZnSphereCodecAlt * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ZnSphereCodecAlt_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ZnSphereCodecAlt, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ZnSphereCodecAlt_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexLattice_nsq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLattice_nsq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_nsq_set" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLattice_nsq_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nsq = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_nsq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_nsq_get" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  result = (int) ((arg1)->nsq);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_dsq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLattice_dsq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_dsq_set" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLattice_dsq_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->dsq = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_dsq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_dsq_get" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  result = (size_t) ((arg1)->dsq);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_zn_sphere_codec_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  faiss::ZnSphereCodecAlt *arg2 = (faiss::ZnSphereCodecAlt *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLattice_zn_sphere_codec_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_zn_sphere_codec_set" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ZnSphereCodecAlt, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexLattice_zn_sphere_codec_set" "', argument " "2"" of type '" "faiss::ZnSphereCodecAlt *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ZnSphereCodecAlt * >(argp2);
+  if (arg1) (arg1)->zn_sphere_codec = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_zn_sphere_codec_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ZnSphereCodecAlt *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_zn_sphere_codec_get" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  result = (faiss::ZnSphereCodecAlt *)& ((arg1)->zn_sphere_codec);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ZnSphereCodecAlt, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_scale_nbit_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLattice_scale_nbit_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_scale_nbit_set" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLattice_scale_nbit_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->scale_nbit = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_scale_nbit_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_scale_nbit_get" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  result = (int) ((arg1)->scale_nbit);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_lattice_nbit_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLattice_lattice_nbit_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_lattice_nbit_set" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLattice_lattice_nbit_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->lattice_nbit = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_lattice_nbit_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_lattice_nbit_get" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  result = (int) ((arg1)->lattice_nbit);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_code_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLattice_code_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_code_size_set" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLattice_code_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->code_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_code_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_code_size_get" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  result = (size_t) ((arg1)->code_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_trained_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLattice_trained_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_trained_set" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexLattice_trained_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->trained = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_trained_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_trained_get" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->trained);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexLattice(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  int arg2 ;
+  int arg3 ;
+  int arg4 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  faiss::IndexLattice *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_IndexLattice", 4, 4, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexLattice" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexLattice" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexLattice" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexLattice" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexLattice *)new faiss::IndexLattice(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexLattice, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLattice_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_train" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLattice_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexLattice_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_sa_code_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_sa_code_size" "', argument " "1"" of type '" "faiss::IndexLattice const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::IndexLattice const *)arg1)->sa_code_size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_sa_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLattice_sa_encode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_sa_encode" "', argument " "1"" of type '" "faiss::IndexLattice const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLattice_sa_encode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexLattice_sa_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexLattice_sa_encode" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexLattice const *)arg1)->sa_encode(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_sa_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLattice_sa_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_sa_decode" "', argument " "1"" of type '" "faiss::IndexLattice const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLattice_sa_decode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexLattice_sa_decode" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexLattice_sa_decode" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexLattice const *)arg1)->sa_decode(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLattice_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_add" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLattice_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexLattice_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexLattice_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_search" "', argument " "1"" of type '" "faiss::IndexLattice const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexLattice_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexLattice_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexLattice_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexLattice_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexLattice_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexLattice const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexLattice_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexLattice_reset" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexLattice(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexLattice *arg1 = (faiss::IndexLattice *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexLattice, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexLattice" "', argument " "1"" of type '" "faiss::IndexLattice *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexLattice * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexLattice_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexLattice, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexLattice_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IVFPQSearchParameters_scan_table_threshold_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFPQSearchParameters *arg1 = (faiss::IVFPQSearchParameters *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IVFPQSearchParameters_scan_table_threshold_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFPQSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFPQSearchParameters_scan_table_threshold_set" "', argument " "1"" of type '" "faiss::IVFPQSearchParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFPQSearchParameters * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IVFPQSearchParameters_scan_table_threshold_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->scan_table_threshold = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFPQSearchParameters_scan_table_threshold_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFPQSearchParameters *arg1 = (faiss::IVFPQSearchParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFPQSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFPQSearchParameters_scan_table_threshold_get" "', argument " "1"" of type '" "faiss::IVFPQSearchParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFPQSearchParameters * >(argp1);
+  result = (size_t) ((arg1)->scan_table_threshold);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFPQSearchParameters_polysemous_ht_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFPQSearchParameters *arg1 = (faiss::IVFPQSearchParameters *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IVFPQSearchParameters_polysemous_ht_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFPQSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFPQSearchParameters_polysemous_ht_set" "', argument " "1"" of type '" "faiss::IVFPQSearchParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFPQSearchParameters * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IVFPQSearchParameters_polysemous_ht_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->polysemous_ht = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFPQSearchParameters_polysemous_ht_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFPQSearchParameters *arg1 = (faiss::IVFPQSearchParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFPQSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFPQSearchParameters_polysemous_ht_get" "', argument " "1"" of type '" "faiss::IVFPQSearchParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFPQSearchParameters * >(argp1);
+  result = (int) ((arg1)->polysemous_ht);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IVFPQSearchParameters(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFPQSearchParameters *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_IVFPQSearchParameters", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IVFPQSearchParameters *)new faiss::IVFPQSearchParameters();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IVFPQSearchParameters, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IVFPQSearchParameters(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFPQSearchParameters *arg1 = (faiss::IVFPQSearchParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFPQSearchParameters, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IVFPQSearchParameters" "', argument " "1"" of type '" "faiss::IVFPQSearchParameters *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFPQSearchParameters * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IVFPQSearchParameters_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IVFPQSearchParameters, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IVFPQSearchParameters_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN int Swig_var_precomputed_table_max_bytes_set(PyObject *_val) {
+  {
+    size_t val;
+    int res = SWIG_AsVal_size_t(_val, &val);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::precomputed_table_max_bytes""' of type '""size_t""'");
+    }
+    faiss::precomputed_table_max_bytes = static_cast< size_t >(val);
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_precomputed_table_max_bytes_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_From_size_t(static_cast< size_t >(faiss::precomputed_table_max_bytes));
+  return pyobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_by_residual_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_by_residual_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_by_residual_set" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_by_residual_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->by_residual = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_by_residual_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_by_residual_get" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  result = (bool) ((arg1)->by_residual);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_pq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::ProductQuantizer *arg2 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_pq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_pq_set" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFPQ_pq_set" "', argument " "2"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProductQuantizer * >(argp2);
+  if (arg1) (arg1)->pq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_pq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ProductQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_pq_get" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  result = (faiss::ProductQuantizer *)& ((arg1)->pq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_do_polysemous_training_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_do_polysemous_training_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_do_polysemous_training_set" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_do_polysemous_training_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->do_polysemous_training = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_do_polysemous_training_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_do_polysemous_training_get" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  result = (bool) ((arg1)->do_polysemous_training);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_polysemous_training_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::PolysemousTraining *arg2 = (faiss::PolysemousTraining *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_polysemous_training_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_polysemous_training_set" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__PolysemousTraining, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFPQ_polysemous_training_set" "', argument " "2"" of type '" "faiss::PolysemousTraining *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::PolysemousTraining * >(argp2);
+  if (arg1) (arg1)->polysemous_training = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_polysemous_training_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::PolysemousTraining *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_polysemous_training_get" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  result = (faiss::PolysemousTraining *) ((arg1)->polysemous_training);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__PolysemousTraining, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_scan_table_threshold_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_scan_table_threshold_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_scan_table_threshold_set" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_scan_table_threshold_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->scan_table_threshold = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_scan_table_threshold_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_scan_table_threshold_get" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  result = (size_t) ((arg1)->scan_table_threshold);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_polysemous_ht_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_polysemous_ht_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_polysemous_ht_set" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_polysemous_ht_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->polysemous_ht = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_polysemous_ht_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_polysemous_ht_get" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  result = (int) ((arg1)->polysemous_ht);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_use_precomputed_table_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_use_precomputed_table_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_use_precomputed_table_set" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_use_precomputed_table_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->use_precomputed_table = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_use_precomputed_table_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_use_precomputed_table_get" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  result = (int) ((arg1)->use_precomputed_table);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_precomputed_table_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::AlignedTable< float > *arg2 = (faiss::AlignedTable< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_precomputed_table_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_precomputed_table_set" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFPQ_precomputed_table_set" "', argument " "2"" of type '" "faiss::AlignedTable< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::AlignedTable< float > * >(argp2);
+  if (arg1) (arg1)->precomputed_table = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_precomputed_table_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AlignedTable< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_precomputed_table_get" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  result = (faiss::AlignedTable< float > *)& ((arg1)->precomputed_table);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQ__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  faiss::MetricType arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  faiss::IndexIVFPQ *result = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFPQ" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFPQ" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFPQ" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFPQ" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFPQ" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_IndexIVFPQ" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFPQ *)new faiss::IndexIVFPQ(arg1,arg2,arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFPQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQ__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  faiss::IndexIVFPQ *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFPQ" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFPQ" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFPQ" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFPQ" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFPQ" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFPQ *)new faiss::IndexIVFPQ(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFPQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_encode_vectors__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  bool arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  bool val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQ_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQ_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQ_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  ecode6 = SWIG_AsVal_bool(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "IndexIVFPQ_encode_vectors" "', argument " "6"" of type '" "bool""'");
+  } 
+  arg6 = static_cast< bool >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQ const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_encode_vectors__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQ_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQ_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQ_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQ const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_encode_vectors(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVFPQ_encode_vectors", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFPQ, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_IndexIVFPQ_encode_vectors__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFPQ, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              {
+                int res = SWIG_AsVal_bool(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_IndexIVFPQ_encode_vectors__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVFPQ_encode_vectors'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFPQ::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *,bool) const\n"
+    "    faiss::IndexIVFPQ::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_sa_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_sa_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_sa_decode" "', argument " "1"" of type '" "faiss::IndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_sa_decode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQ_sa_decode" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQ_sa_decode" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQ const *)arg1)->sa_decode(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_add_core(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_add_core", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_add_core" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_add_core" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQ_add_core" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQ_add_core" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQ_add_core" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_core(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,(faiss::Index::idx_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_add_core_o__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_add_core_o" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_add_core_o" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQ_add_core_o" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQ_add_core_o" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQ_add_core_o" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVFPQ_add_core_o" "', argument " "6"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_core_o(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5,(faiss::Index::idx_t const *)arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_add_core_o__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_add_core_o" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_add_core_o" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQ_add_core_o" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQ_add_core_o" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQ_add_core_o" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_core_o(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_add_core_o(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVFPQ_add_core_o", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFPQ, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_IndexIVFPQ_add_core_o__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFPQ, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_long, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_IndexIVFPQ_add_core_o__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVFPQ_add_core_o'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFPQ::add_core_o(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,float *,faiss::Index::idx_t const *)\n"
+    "    faiss::IndexIVFPQ::add_core_o(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,float *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_train_residual(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_train_residual", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_train_residual" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_train_residual" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQ_train_residual" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train_residual(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_train_residual_o(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_train_residual_o", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_train_residual_o" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_train_residual_o" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQ_train_residual_o" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQ_train_residual_o" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train_residual_o(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_reconstruct_from_offset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  int64_t arg2 ;
+  int64_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_reconstruct_from_offset", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_reconstruct_from_offset" "', argument " "1"" of type '" "faiss::IndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_reconstruct_from_offset" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexIVFPQ_reconstruct_from_offset" "', argument " "3"" of type '" "int64_t""'");
+  } 
+  arg3 = static_cast< int64_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQ_reconstruct_from_offset" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQ const *)arg1)->reconstruct_from_offset(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_find_duplicates(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::Index::idx_t *arg2 = (faiss::Index::idx_t *) 0 ;
+  size_t *arg3 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_find_duplicates", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_find_duplicates" "', argument " "1"" of type '" "faiss::IndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFPQ_find_duplicates" "', argument " "2"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index::idx_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQ_find_duplicates" "', argument " "3"" of type '" "size_t *""'"); 
+  }
+  arg3 = reinterpret_cast< size_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::IndexIVFPQ const *)arg1)->find_duplicates(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_encode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_encode" "', argument " "1"" of type '" "faiss::IndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_encode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQ_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQ_encode" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQ const *)arg1)->encode(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_encode_multiple__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  size_t arg2 ;
+  faiss::Index::idx_t *arg3 = (faiss::Index::idx_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  bool arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  bool val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_encode_multiple" "', argument " "1"" of type '" "faiss::IndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_encode_multiple" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQ_encode_multiple" "', argument " "3"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::Index::idx_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQ_encode_multiple" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQ_encode_multiple" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  ecode6 = SWIG_AsVal_bool(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "IndexIVFPQ_encode_multiple" "', argument " "6"" of type '" "bool""'");
+  } 
+  arg6 = static_cast< bool >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQ const *)arg1)->encode_multiple(arg2,arg3,(float const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_encode_multiple__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  size_t arg2 ;
+  faiss::Index::idx_t *arg3 = (faiss::Index::idx_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_encode_multiple" "', argument " "1"" of type '" "faiss::IndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_encode_multiple" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQ_encode_multiple" "', argument " "3"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::Index::idx_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQ_encode_multiple" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQ_encode_multiple" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQ const *)arg1)->encode_multiple(arg2,arg3,(float const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_encode_multiple(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVFPQ_encode_multiple", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFPQ, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_long, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_IndexIVFPQ_encode_multiple__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFPQ, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_long, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              {
+                int res = SWIG_AsVal_bool(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_IndexIVFPQ_encode_multiple__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVFPQ_encode_multiple'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFPQ::encode_multiple(size_t,faiss::Index::idx_t *,float const *,uint8_t *,bool) const\n"
+    "    faiss::IndexIVFPQ::encode_multiple(size_t,faiss::Index::idx_t *,float const *,uint8_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_decode_multiple(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  size_t arg2 ;
+  faiss::Index::idx_t *arg3 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_decode_multiple", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_decode_multiple" "', argument " "1"" of type '" "faiss::IndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_decode_multiple" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQ_decode_multiple" "', argument " "3"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::Index::idx_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQ_decode_multiple" "', argument " "4"" of type '" "uint8_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQ_decode_multiple" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQ const *)arg1)->decode_multiple(arg2,(faiss::Index::idx_t const *)arg3,(uint8_t const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_get_InvertedListScanner(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::InvertedListScanner *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQ_get_InvertedListScanner", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_get_InvertedListScanner" "', argument " "1"" of type '" "faiss::IndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQ_get_InvertedListScanner" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedListScanner *)((faiss::IndexIVFPQ const *)arg1)->get_InvertedListScanner(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedListScanner, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQ_precompute_table(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQ_precompute_table" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->precompute_table();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQ__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFPQ *)new faiss::IndexIVFPQ();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFPQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQ(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexIVFPQ", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexIVFPQ__SWIG_2(self, argc, argv);
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_IndexIVFPQ__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_new_IndexIVFPQ__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexIVFPQ'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFPQ::IndexIVFPQ(faiss::Index *,size_t,size_t,size_t,size_t,faiss::MetricType)\n"
+    "    faiss::IndexIVFPQ::IndexIVFPQ(faiss::Index *,size_t,size_t,size_t,size_t)\n"
+    "    faiss::IndexIVFPQ::IndexIVFPQ()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIVFPQ(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = (faiss::IndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQ, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIVFPQ" "', argument " "1"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexIVFPQ_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIVFPQ, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIVFPQ_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_initialize_IVFPQ_precomputed_table(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int *arg1 = 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  faiss::ProductQuantizer *arg3 = 0 ;
+  faiss::AlignedTable< float,32 > *arg4 = 0 ;
+  bool arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  bool val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "initialize_IVFPQ_precomputed_table", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_int,  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "initialize_IVFPQ_precomputed_table" "', argument " "1"" of type '" "int &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "initialize_IVFPQ_precomputed_table" "', argument " "1"" of type '" "int &""'"); 
+  }
+  arg1 = reinterpret_cast< int * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "initialize_IVFPQ_precomputed_table" "', argument " "2"" of type '" "faiss::Index const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__ProductQuantizer,  0  | 0);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "initialize_IVFPQ_precomputed_table" "', argument " "3"" of type '" "faiss::ProductQuantizer const &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "initialize_IVFPQ_precomputed_table" "', argument " "3"" of type '" "faiss::ProductQuantizer const &""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::ProductQuantizer * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_faiss__AlignedTableT_float_32_t,  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "initialize_IVFPQ_precomputed_table" "', argument " "4"" of type '" "faiss::AlignedTable< float,32 > &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "initialize_IVFPQ_precomputed_table" "', argument " "4"" of type '" "faiss::AlignedTable< float,32 > &""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::AlignedTable< float,32 > * >(argp4);
+  ecode5 = SWIG_AsVal_bool(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "initialize_IVFPQ_precomputed_table" "', argument " "5"" of type '" "bool""'");
+  } 
+  arg5 = static_cast< bool >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::initialize_IVFPQ_precomputed_table(*arg1,(faiss::Index const *)arg2,(faiss::ProductQuantizer const &)*arg3,*arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQStats_nrefine_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQStats *arg1 = (faiss::IndexIVFPQStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQStats_nrefine_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQStats_nrefine_set" "', argument " "1"" of type '" "faiss::IndexIVFPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQStats_nrefine_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nrefine = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQStats_nrefine_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQStats *arg1 = (faiss::IndexIVFPQStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQStats_nrefine_get" "', argument " "1"" of type '" "faiss::IndexIVFPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQStats * >(argp1);
+  result = (size_t) ((arg1)->nrefine);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQStats_n_hamming_pass_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQStats *arg1 = (faiss::IndexIVFPQStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQStats_n_hamming_pass_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQStats_n_hamming_pass_set" "', argument " "1"" of type '" "faiss::IndexIVFPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQStats_n_hamming_pass_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->n_hamming_pass = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQStats_n_hamming_pass_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQStats *arg1 = (faiss::IndexIVFPQStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQStats_n_hamming_pass_get" "', argument " "1"" of type '" "faiss::IndexIVFPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQStats * >(argp1);
+  result = (size_t) ((arg1)->n_hamming_pass);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQStats_search_cycles_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQStats *arg1 = (faiss::IndexIVFPQStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQStats_search_cycles_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQStats_search_cycles_set" "', argument " "1"" of type '" "faiss::IndexIVFPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQStats_search_cycles_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->search_cycles = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQStats_search_cycles_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQStats *arg1 = (faiss::IndexIVFPQStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQStats_search_cycles_get" "', argument " "1"" of type '" "faiss::IndexIVFPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQStats * >(argp1);
+  result = (size_t) ((arg1)->search_cycles);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQStats_refine_cycles_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQStats *arg1 = (faiss::IndexIVFPQStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQStats_refine_cycles_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQStats_refine_cycles_set" "', argument " "1"" of type '" "faiss::IndexIVFPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQStats_refine_cycles_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->refine_cycles = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQStats_refine_cycles_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQStats *arg1 = (faiss::IndexIVFPQStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQStats_refine_cycles_get" "', argument " "1"" of type '" "faiss::IndexIVFPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQStats * >(argp1);
+  result = (size_t) ((arg1)->refine_cycles);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQStats *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_IndexIVFPQStats", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFPQStats *)new faiss::IndexIVFPQStats();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFPQStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQStats_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQStats *arg1 = (faiss::IndexIVFPQStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQStats_reset" "', argument " "1"" of type '" "faiss::IndexIVFPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQStats * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIVFPQStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQStats *arg1 = (faiss::IndexIVFPQStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQStats, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIVFPQStats" "', argument " "1"" of type '" "faiss::IndexIVFPQStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQStats * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexIVFPQStats_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIVFPQStats, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIVFPQStats_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN int Swig_var_indexIVFPQ_stats_set(PyObject *_val) {
+  {
+    void *argp = 0;
+    int res = SWIG_ConvertPtr(_val, &argp, SWIGTYPE_p_faiss__IndexIVFPQStats,  0  | 0);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::indexIVFPQ_stats""' of type '""faiss::IndexIVFPQStats""'");
+    }
+    if (!argp) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in variable '""faiss::indexIVFPQ_stats""' of type '""faiss::IndexIVFPQStats""'");
+    } else {
+      faiss::IndexIVFPQStats * temp;
+      temp  = reinterpret_cast< faiss::IndexIVFPQStats * >(argp);
+      faiss::indexIVFPQ_stats = *temp;
+      if (SWIG_IsNewObj(res)) delete temp;
+    }
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_indexIVFPQ_stats_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_NewPointerObj(SWIG_as_voidptr(&faiss::indexIVFPQ_stats), SWIGTYPE_p_faiss__IndexIVFPQStats,  0 );
+  return pyobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_refine_pq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  faiss::ProductQuantizer *arg2 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQR_refine_pq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_refine_pq_set" "', argument " "1"" of type '" "faiss::IndexIVFPQR *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFPQR_refine_pq_set" "', argument " "2"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProductQuantizer * >(argp2);
+  if (arg1) (arg1)->refine_pq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_refine_pq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ProductQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_refine_pq_get" "', argument " "1"" of type '" "faiss::IndexIVFPQR *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  result = (faiss::ProductQuantizer *)& ((arg1)->refine_pq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_refine_codes_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  std::vector< uint8_t > *arg2 = (std::vector< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQR_refine_codes_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_refine_codes_set" "', argument " "1"" of type '" "faiss::IndexIVFPQR *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFPQR_refine_codes_set" "', argument " "2"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< uint8_t > * >(argp2);
+  if (arg1) (arg1)->refine_codes = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_refine_codes_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< uint8_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_refine_codes_get" "', argument " "1"" of type '" "faiss::IndexIVFPQR *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  result = (std::vector< uint8_t > *)& ((arg1)->refine_codes);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_k_factor_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQR_k_factor_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_k_factor_set" "', argument " "1"" of type '" "faiss::IndexIVFPQR *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQR_k_factor_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->k_factor = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_k_factor_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_k_factor_get" "', argument " "1"" of type '" "faiss::IndexIVFPQR *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  result = (float) ((arg1)->k_factor);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQR__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  size_t arg6 ;
+  size_t arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  size_t val7 ;
+  int ecode7 = 0 ;
+  faiss::IndexIVFPQR *result = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFPQR" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFPQR" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFPQR" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFPQR" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFPQR" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_IndexIVFPQR" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  ecode7 = SWIG_AsVal_size_t(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "new_IndexIVFPQR" "', argument " "7"" of type '" "size_t""'");
+  } 
+  arg7 = static_cast< size_t >(val7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFPQR *)new faiss::IndexIVFPQR(arg1,arg2,arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFPQR, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_reset" "', argument " "1"" of type '" "faiss::IndexIVFPQR *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQR_remove_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_remove_ids" "', argument " "1"" of type '" "faiss::IndexIVFPQR *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFPQR_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIVFPQR_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_train_residual(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQR_train_residual", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_train_residual" "', argument " "1"" of type '" "faiss::IndexIVFPQR *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQR_train_residual" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQR_train_residual" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train_residual(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQR_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_add_with_ids" "', argument " "1"" of type '" "faiss::IndexIVFPQR *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQR_add_with_ids" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQR_add_with_ids" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQR_add_with_ids" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_add_core(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQR_add_core", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_add_core" "', argument " "1"" of type '" "faiss::IndexIVFPQR *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQR_add_core" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQR_add_core" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQR_add_core" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQR_add_core" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_core(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,(faiss::Index::idx_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_reconstruct_from_offset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  int64_t arg2 ;
+  int64_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQR_reconstruct_from_offset", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_reconstruct_from_offset" "', argument " "1"" of type '" "faiss::IndexIVFPQR const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQR_reconstruct_from_offset" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexIVFPQR_reconstruct_from_offset" "', argument " "3"" of type '" "int64_t""'");
+  } 
+  arg3 = static_cast< int64_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQR_reconstruct_from_offset" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQR const *)arg1)->reconstruct_from_offset(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_merge_from(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  faiss::IndexIVF *arg2 = 0 ;
+  faiss::Index::idx_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQR_merge_from", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_merge_from" "', argument " "1"" of type '" "faiss::IndexIVFPQR *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IndexIVF,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFPQR_merge_from" "', argument " "2"" of type '" "faiss::IndexIVF &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIVFPQR_merge_from" "', argument " "2"" of type '" "faiss::IndexIVF &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVF * >(argp2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexIVFPQR_merge_from" "', argument " "3"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::Index::idx_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->merge_from(*arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_search_preassigned__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  float *arg7 = (float *) 0 ;
+  faiss::Index::idx_t *arg8 = (faiss::Index::idx_t *) 0 ;
+  bool arg9 ;
+  faiss::IVFSearchParameters *arg10 = (faiss::IVFSearchParameters *) 0 ;
+  faiss::IndexIVFStats *arg11 = (faiss::IndexIVFStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  bool val9 ;
+  int ecode9 = 0 ;
+  void *argp10 = 0 ;
+  int res10 = 0 ;
+  void *argp11 = 0 ;
+  int res11 = 0 ;
+  
+  if ((nobjs < 11) || (nobjs > 11)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "1"" of type '" "faiss::IndexIVFPQR const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "8"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::Index::idx_t * >(argp8);
+  ecode9 = SWIG_AsVal_bool(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "9"" of type '" "bool""'");
+  } 
+  arg9 = static_cast< bool >(val9);
+  res10 = SWIG_ConvertPtr(swig_obj[9], &argp10,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res10)) {
+    SWIG_exception_fail(SWIG_ArgError(res10), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "10"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg10 = reinterpret_cast< faiss::IVFSearchParameters * >(argp10);
+  res11 = SWIG_ConvertPtr(swig_obj[10], &argp11,SWIGTYPE_p_faiss__IndexIVFStats, 0 |  0 );
+  if (!SWIG_IsOK(res11)) {
+    SWIG_exception_fail(SWIG_ArgError(res11), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "11"" of type '" "faiss::IndexIVFStats *""'"); 
+  }
+  arg11 = reinterpret_cast< faiss::IndexIVFStats * >(argp11);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQR const *)arg1)->search_preassigned(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5,(float const *)arg6,arg7,arg8,arg9,(faiss::IVFSearchParameters const *)arg10,arg11);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_search_preassigned__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  float *arg7 = (float *) 0 ;
+  faiss::Index::idx_t *arg8 = (faiss::Index::idx_t *) 0 ;
+  bool arg9 ;
+  faiss::IVFSearchParameters *arg10 = (faiss::IVFSearchParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  bool val9 ;
+  int ecode9 = 0 ;
+  void *argp10 = 0 ;
+  int res10 = 0 ;
+  
+  if ((nobjs < 10) || (nobjs > 10)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "1"" of type '" "faiss::IndexIVFPQR const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "8"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::Index::idx_t * >(argp8);
+  ecode9 = SWIG_AsVal_bool(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "9"" of type '" "bool""'");
+  } 
+  arg9 = static_cast< bool >(val9);
+  res10 = SWIG_ConvertPtr(swig_obj[9], &argp10,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res10)) {
+    SWIG_exception_fail(SWIG_ArgError(res10), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "10"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg10 = reinterpret_cast< faiss::IVFSearchParameters * >(argp10);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQR const *)arg1)->search_preassigned(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5,(float const *)arg6,arg7,arg8,arg9,(faiss::IVFSearchParameters const *)arg10);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_search_preassigned__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  float *arg6 = (float *) 0 ;
+  float *arg7 = (float *) 0 ;
+  faiss::Index::idx_t *arg8 = (faiss::Index::idx_t *) 0 ;
+  bool arg9 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  bool val9 ;
+  int ecode9 = 0 ;
+  
+  if ((nobjs < 9) || (nobjs > 9)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "1"" of type '" "faiss::IndexIVFPQR const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "7"" of type '" "float *""'"); 
+  }
+  arg7 = reinterpret_cast< float * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "8"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::Index::idx_t * >(argp8);
+  ecode9 = SWIG_AsVal_bool(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "IndexIVFPQR_search_preassigned" "', argument " "9"" of type '" "bool""'");
+  } 
+  arg9 = static_cast< bool >(val9);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQR const *)arg1)->search_preassigned(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5,(float const *)arg6,arg7,arg8,arg9);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQR_search_preassigned(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[12] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVFPQR_search_preassigned", 0, 11, argv))) SWIG_fail;
+  --argc;
+  if (argc == 9) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFPQR, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_bool(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      return _wrap_IndexIVFPQR_search_preassigned__SWIG_2(self, argc, argv);
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 10) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFPQR, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_bool(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      void *vptr = 0;
+                      int res = SWIG_ConvertPtr(argv[9], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+                      _v = SWIG_CheckState(res);
+                      if (_v) {
+                        return _wrap_IndexIVFPQR_search_preassigned__SWIG_1(self, argc, argv);
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 11) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFPQR, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_float, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_bool(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      void *vptr = 0;
+                      int res = SWIG_ConvertPtr(argv[9], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+                      _v = SWIG_CheckState(res);
+                      if (_v) {
+                        void *vptr = 0;
+                        int res = SWIG_ConvertPtr(argv[10], &vptr, SWIGTYPE_p_faiss__IndexIVFStats, 0);
+                        _v = SWIG_CheckState(res);
+                        if (_v) {
+                          return _wrap_IndexIVFPQR_search_preassigned__SWIG_0(self, argc, argv);
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVFPQR_search_preassigned'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFPQR::search_preassigned(faiss::Index::idx_t,float const *,faiss::Index::idx_t,faiss::Index::idx_t const *,float const *,float *,faiss::Index::idx_t *,bool,faiss::IVFSearchParameters const *,faiss::IndexIVFStats *) const\n"
+    "    faiss::IndexIVFPQR::search_preassigned(faiss::Index::idx_t,float const *,faiss::Index::idx_t,faiss::Index::idx_t const *,float const *,float *,faiss::Index::idx_t *,bool,faiss::IVFSearchParameters const *) const\n"
+    "    faiss::IndexIVFPQR::search_preassigned(faiss::Index::idx_t,float const *,faiss::Index::idx_t,faiss::Index::idx_t const *,float const *,float *,faiss::Index::idx_t *,bool) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQR__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFPQR *)new faiss::IndexIVFPQR();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFPQR, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQR(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexIVFPQR", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexIVFPQR__SWIG_1(self, argc, argv);
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_size_t(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_size_t(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  return _wrap_new_IndexIVFPQR__SWIG_0(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexIVFPQR'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFPQR::IndexIVFPQR(faiss::Index *,size_t,size_t,size_t,size_t,size_t,size_t)\n"
+    "    faiss::IndexIVFPQR::IndexIVFPQR()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIVFPQR(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQR *arg1 = (faiss::IndexIVFPQR *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQR, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIVFPQR" "', argument " "1"" of type '" "faiss::IndexIVFPQR *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQR * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexIVFPQR_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIVFPQR, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIVFPQR_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_Index2Layer_q1_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  faiss::Level1Quantizer *arg2 = (faiss::Level1Quantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index2Layer_q1_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_q1_set" "', argument " "1"" of type '" "faiss::Index2Layer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Index2Layer_q1_set" "', argument " "2"" of type '" "faiss::Level1Quantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Level1Quantizer * >(argp2);
+  if (arg1) (arg1)->q1 = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index2Layer_q1_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Level1Quantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_q1_get" "', argument " "1"" of type '" "faiss::Index2Layer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  result = (faiss::Level1Quantizer *)& ((arg1)->q1);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Level1Quantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index2Layer_pq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  faiss::ProductQuantizer *arg2 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index2Layer_pq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_pq_set" "', argument " "1"" of type '" "faiss::Index2Layer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Index2Layer_pq_set" "', argument " "2"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProductQuantizer * >(argp2);
+  if (arg1) (arg1)->pq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index2Layer_pq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ProductQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_pq_get" "', argument " "1"" of type '" "faiss::Index2Layer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  result = (faiss::ProductQuantizer *)& ((arg1)->pq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index2Layer_code_size_1_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index2Layer_code_size_1_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_code_size_1_set" "', argument " "1"" of type '" "faiss::Index2Layer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index2Layer_code_size_1_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->code_size_1 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index2Layer_code_size_1_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_code_size_1_get" "', argument " "1"" of type '" "faiss::Index2Layer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  result = (size_t) ((arg1)->code_size_1);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index2Layer_code_size_2_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index2Layer_code_size_2_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_code_size_2_set" "', argument " "1"" of type '" "faiss::Index2Layer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index2Layer_code_size_2_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->code_size_2 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index2Layer_code_size_2_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_code_size_2_get" "', argument " "1"" of type '" "faiss::Index2Layer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  result = (size_t) ((arg1)->code_size_2);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Index2Layer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  int arg3 ;
+  int arg4 ;
+  faiss::MetricType arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  faiss::Index2Layer *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_Index2Layer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_Index2Layer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_Index2Layer" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_Index2Layer" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_Index2Layer" "', argument " "5"" of type '" "faiss::MetricType""'");
+  } 
+  arg5 = static_cast< faiss::MetricType >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index2Layer *)new faiss::Index2Layer(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index2Layer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Index2Layer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  int arg3 ;
+  int arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::Index2Layer *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_Index2Layer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_Index2Layer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_Index2Layer" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_Index2Layer" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index2Layer *)new faiss::Index2Layer(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index2Layer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Index2Layer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  int arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::Index2Layer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_Index2Layer" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_Index2Layer" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_Index2Layer" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index2Layer *)new faiss::Index2Layer(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index2Layer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Index2Layer__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index2Layer *)new faiss::Index2Layer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index2Layer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Index2Layer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_Index2Layer", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_Index2Layer__SWIG_3(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_Index2Layer__SWIG_2(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_Index2Layer__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_Index2Layer__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_Index2Layer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::Index2Layer::Index2Layer(faiss::Index *,size_t,int,int,faiss::MetricType)\n"
+    "    faiss::Index2Layer::Index2Layer(faiss::Index *,size_t,int,int)\n"
+    "    faiss::Index2Layer::Index2Layer(faiss::Index *,size_t,int)\n"
+    "    faiss::Index2Layer::Index2Layer()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Index2Layer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Index2Layer" "', argument " "1"" of type '" "faiss::Index2Layer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index2Layer_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index2Layer_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_train" "', argument " "1"" of type '" "faiss::Index2Layer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index2Layer_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index2Layer_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index2Layer_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index2Layer_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_search" "', argument " "1"" of type '" "faiss::Index2Layer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index2Layer_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index2Layer_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "Index2Layer_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "Index2Layer_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "Index2Layer_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index2Layer const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index2Layer_get_distance_computer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DistanceComputer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_get_distance_computer" "', argument " "1"" of type '" "faiss::Index2Layer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::DistanceComputer *)((faiss::Index2Layer const *)arg1)->get_distance_computer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DistanceComputer, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index2Layer_transfer_to_IVFPQ(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  faiss::IndexIVFPQ *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index2Layer_transfer_to_IVFPQ", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_transfer_to_IVFPQ" "', argument " "1"" of type '" "faiss::Index2Layer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IndexIVFPQ,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Index2Layer_transfer_to_IVFPQ" "', argument " "2"" of type '" "faiss::IndexIVFPQ &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "Index2Layer_transfer_to_IVFPQ" "', argument " "2"" of type '" "faiss::IndexIVFPQ &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFPQ * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index2Layer const *)arg1)->transfer_to_IVFPQ(*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index2Layer_sa_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index2Layer_sa_encode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_sa_encode" "', argument " "1"" of type '" "faiss::Index2Layer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index2Layer_sa_encode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index2Layer_sa_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "Index2Layer_sa_encode" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index2Layer const *)arg1)->sa_encode(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Index2Layer_sa_decode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index2Layer *arg1 = (faiss::Index2Layer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Index2Layer_sa_decode", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index2Layer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Index2Layer_sa_decode" "', argument " "1"" of type '" "faiss::Index2Layer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index2Layer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "Index2Layer_sa_decode" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "Index2Layer_sa_decode" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "Index2Layer_sa_decode" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::Index2Layer const *)arg1)->sa_decode(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Index2Layer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__Index2Layer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Index2Layer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_pq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  faiss::ProductQuantizer *arg2 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQFastScan_pq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_pq_set" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexPQFastScan_pq_set" "', argument " "2"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProductQuantizer * >(argp2);
+  if (arg1) (arg1)->pq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_pq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ProductQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_pq_get" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  result = (faiss::ProductQuantizer *)& ((arg1)->pq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_implem_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQFastScan_implem_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_implem_set" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQFastScan_implem_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->implem = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_implem_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_implem_get" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  result = (int) ((arg1)->implem);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_skip_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQFastScan_skip_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_skip_set" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQFastScan_skip_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->skip = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_skip_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_skip_get" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  result = (int) ((arg1)->skip);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_bbs_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQFastScan_bbs_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_bbs_set" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQFastScan_bbs_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->bbs = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_bbs_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_bbs_get" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  result = (int) ((arg1)->bbs);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_qbs_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQFastScan_qbs_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_qbs_set" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQFastScan_qbs_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->qbs = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_qbs_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_qbs_get" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  result = (int) ((arg1)->qbs);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_ntotal2_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQFastScan_ntotal2_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_ntotal2_set" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQFastScan_ntotal2_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->ntotal2 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_ntotal2_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_ntotal2_get" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  result = (size_t) ((arg1)->ntotal2);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_M2_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQFastScan_M2_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_M2_set" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQFastScan_M2_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->M2 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_M2_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_M2_get" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  result = (size_t) ((arg1)->M2);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_codes_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  faiss::AlignedTable< uint8_t > *arg2 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQFastScan_codes_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_codes_set" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexPQFastScan_codes_set" "', argument " "2"" of type '" "faiss::AlignedTable< uint8_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp2);
+  if (arg1) (arg1)->codes = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_codes_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AlignedTable< uint8_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_codes_get" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  result = (faiss::AlignedTable< uint8_t > *)& ((arg1)->codes);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_orig_codes_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  uint8_t *arg2 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQFastScan_orig_codes_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_orig_codes_set" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_char, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexPQFastScan_orig_codes_set" "', argument " "2"" of type '" "uint8_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< uint8_t * >(argp2);
+  if (arg1) (arg1)->orig_codes = (uint8_t const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_orig_codes_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint8_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_orig_codes_get" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  result = (uint8_t *) ((arg1)->orig_codes);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPQFastScan__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::MetricType arg4 ;
+  int arg5 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  faiss::IndexPQFastScan *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexPQFastScan" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexPQFastScan" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexPQFastScan" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexPQFastScan" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexPQFastScan" "', argument " "5"" of type '" "int""'");
+  } 
+  arg5 = static_cast< int >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexPQFastScan *)new faiss::IndexPQFastScan(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexPQFastScan, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPQFastScan__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::MetricType arg4 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::IndexPQFastScan *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexPQFastScan" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexPQFastScan" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexPQFastScan" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexPQFastScan" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexPQFastScan *)new faiss::IndexPQFastScan(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexPQFastScan, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPQFastScan__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexPQFastScan *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexPQFastScan" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexPQFastScan" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexPQFastScan" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexPQFastScan *)new faiss::IndexPQFastScan(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexPQFastScan, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPQFastScan__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexPQFastScan *)new faiss::IndexPQFastScan();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexPQFastScan, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPQFastScan__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexPQFastScan *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_faiss__IndexPQ,  0  | 0);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexPQFastScan" "', argument " "1"" of type '" "faiss::IndexPQ const &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_IndexPQFastScan" "', argument " "1"" of type '" "faiss::IndexPQ const &""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexPQFastScan" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexPQFastScan *)new faiss::IndexPQFastScan((faiss::IndexPQ const &)*arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexPQFastScan, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPQFastScan__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQ *arg1 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexPQFastScan *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_faiss__IndexPQ,  0  | 0);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexPQFastScan" "', argument " "1"" of type '" "faiss::IndexPQ const &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_IndexPQFastScan" "', argument " "1"" of type '" "faiss::IndexPQ const &""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQ * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexPQFastScan *)new faiss::IndexPQFastScan((faiss::IndexPQ const &)*arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexPQFastScan, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexPQFastScan(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexPQFastScan", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexPQFastScan__SWIG_3(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_faiss__IndexPQ, SWIG_POINTER_NO_NULL | 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexPQFastScan__SWIG_5(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_faiss__IndexPQ, SWIG_POINTER_NO_NULL | 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexPQFastScan__SWIG_4(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexPQFastScan__SWIG_2(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_IndexPQFastScan__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_IndexPQFastScan__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexPQFastScan'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexPQFastScan::IndexPQFastScan(int,size_t,size_t,faiss::MetricType,int)\n"
+    "    faiss::IndexPQFastScan::IndexPQFastScan(int,size_t,size_t,faiss::MetricType)\n"
+    "    faiss::IndexPQFastScan::IndexPQFastScan(int,size_t,size_t)\n"
+    "    faiss::IndexPQFastScan::IndexPQFastScan()\n"
+    "    faiss::IndexPQFastScan::IndexPQFastScan(faiss::IndexPQ const &,int)\n"
+    "    faiss::IndexPQFastScan::IndexPQFastScan(faiss::IndexPQ const &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQFastScan_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_train" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQFastScan_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPQFastScan_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQFastScan_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_add" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQFastScan_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPQFastScan_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_reset" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQFastScan_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_search" "', argument " "1"" of type '" "faiss::IndexPQFastScan const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQFastScan_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPQFastScan_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexPQFastScan_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexPQFastScan_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexPQFastScan_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPQFastScan const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexPQFastScan_compute_quantized_LUT(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexPQFastScan_compute_quantized_LUT", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexPQFastScan_compute_quantized_LUT" "', argument " "1"" of type '" "faiss::IndexPQFastScan const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexPQFastScan_compute_quantized_LUT" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexPQFastScan_compute_quantized_LUT" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexPQFastScan_compute_quantized_LUT" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexPQFastScan_compute_quantized_LUT" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexPQFastScan const *)arg1)->compute_quantized_LUT(arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexPQFastScan(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexPQFastScan *arg1 = (faiss::IndexPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexPQFastScan, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexPQFastScan" "', argument " "1"" of type '" "faiss::IndexPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexPQFastScan * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexPQFastScan_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexPQFastScan, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexPQFastScan_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_FastScanStats_t0_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FastScanStats *arg1 = (faiss::FastScanStats *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "FastScanStats_t0_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FastScanStats_t0_set" "', argument " "1"" of type '" "faiss::FastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FastScanStats * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "FastScanStats_t0_set" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  if (arg1) (arg1)->t0 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FastScanStats_t0_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FastScanStats *arg1 = (faiss::FastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FastScanStats_t0_get" "', argument " "1"" of type '" "faiss::FastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FastScanStats * >(argp1);
+  result = (uint64_t) ((arg1)->t0);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FastScanStats_t1_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FastScanStats *arg1 = (faiss::FastScanStats *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "FastScanStats_t1_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FastScanStats_t1_set" "', argument " "1"" of type '" "faiss::FastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FastScanStats * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "FastScanStats_t1_set" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  if (arg1) (arg1)->t1 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FastScanStats_t1_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FastScanStats *arg1 = (faiss::FastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FastScanStats_t1_get" "', argument " "1"" of type '" "faiss::FastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FastScanStats * >(argp1);
+  result = (uint64_t) ((arg1)->t1);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FastScanStats_t2_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FastScanStats *arg1 = (faiss::FastScanStats *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "FastScanStats_t2_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FastScanStats_t2_set" "', argument " "1"" of type '" "faiss::FastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FastScanStats * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "FastScanStats_t2_set" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  if (arg1) (arg1)->t2 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FastScanStats_t2_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FastScanStats *arg1 = (faiss::FastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FastScanStats_t2_get" "', argument " "1"" of type '" "faiss::FastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FastScanStats * >(argp1);
+  result = (uint64_t) ((arg1)->t2);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FastScanStats_t3_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FastScanStats *arg1 = (faiss::FastScanStats *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "FastScanStats_t3_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FastScanStats_t3_set" "', argument " "1"" of type '" "faiss::FastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FastScanStats * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "FastScanStats_t3_set" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  if (arg1) (arg1)->t3 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FastScanStats_t3_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FastScanStats *arg1 = (faiss::FastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FastScanStats_t3_get" "', argument " "1"" of type '" "faiss::FastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FastScanStats * >(argp1);
+  result = (uint64_t) ((arg1)->t3);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_FastScanStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FastScanStats *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_FastScanStats", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::FastScanStats *)new faiss::FastScanStats();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__FastScanStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_FastScanStats_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FastScanStats *arg1 = (faiss::FastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FastScanStats_reset" "', argument " "1"" of type '" "faiss::FastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FastScanStats * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_FastScanStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::FastScanStats *arg1 = (faiss::FastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__FastScanStats, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_FastScanStats" "', argument " "1"" of type '" "faiss::FastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::FastScanStats * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *FastScanStats_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__FastScanStats, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *FastScanStats_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN int Swig_var_FastScan_stats_set(PyObject *_val) {
+  {
+    void *argp = 0;
+    int res = SWIG_ConvertPtr(_val, &argp, SWIGTYPE_p_faiss__FastScanStats,  0  | 0);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::FastScan_stats""' of type '""faiss::FastScanStats""'");
+    }
+    if (!argp) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in variable '""faiss::FastScan_stats""' of type '""faiss::FastScanStats""'");
+    } else {
+      faiss::FastScanStats * temp;
+      temp  = reinterpret_cast< faiss::FastScanStats * >(argp);
+      faiss::FastScan_stats = *temp;
+      if (SWIG_IsNewObj(res)) delete temp;
+    }
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_FastScan_stats_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_NewPointerObj(SWIG_as_voidptr(&faiss::FastScan_stats), SWIGTYPE_p_faiss__FastScanStats,  0 );
+  return pyobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_by_residual_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_by_residual_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_by_residual_set" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_by_residual_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->by_residual = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_by_residual_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_by_residual_get" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  result = (bool) ((arg1)->by_residual);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_pq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  faiss::ProductQuantizer *arg2 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_pq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_pq_set" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFPQFastScan_pq_set" "', argument " "2"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProductQuantizer * >(argp2);
+  if (arg1) (arg1)->pq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_pq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ProductQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_pq_get" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  result = (faiss::ProductQuantizer *)& ((arg1)->pq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_bbs_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_bbs_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_bbs_set" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_bbs_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->bbs = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_bbs_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_bbs_get" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  result = (int) ((arg1)->bbs);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_M2_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_M2_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_M2_set" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_M2_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->M2 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_M2_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_M2_get" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  result = (size_t) ((arg1)->M2);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_use_precomputed_table_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_use_precomputed_table_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_use_precomputed_table_set" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_use_precomputed_table_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->use_precomputed_table = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_use_precomputed_table_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_use_precomputed_table_get" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  result = (int) ((arg1)->use_precomputed_table);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_precomputed_table_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  faiss::AlignedTable< float > *arg2 = (faiss::AlignedTable< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_precomputed_table_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_precomputed_table_set" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFPQFastScan_precomputed_table_set" "', argument " "2"" of type '" "faiss::AlignedTable< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::AlignedTable< float > * >(argp2);
+  if (arg1) (arg1)->precomputed_table = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_precomputed_table_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AlignedTable< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_precomputed_table_get" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  result = (faiss::AlignedTable< float > *)& ((arg1)->precomputed_table);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_implem_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_implem_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_implem_set" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_implem_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->implem = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_implem_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_implem_get" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  result = (int) ((arg1)->implem);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_skip_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_skip_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_skip_set" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_skip_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->skip = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_skip_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_skip_get" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  result = (int) ((arg1)->skip);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_qbs_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_qbs_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_qbs_set" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_qbs_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->qbs = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_qbs_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_qbs_get" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  result = (int) ((arg1)->qbs);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_qbs2_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_qbs2_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_qbs2_set" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_qbs2_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->qbs2 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_qbs2_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_qbs2_get" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  result = (size_t) ((arg1)->qbs2);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQFastScan__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  faiss::MetricType arg6 ;
+  int arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  int val7 ;
+  int ecode7 = 0 ;
+  faiss::IndexIVFPQFastScan *result = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFPQFastScan" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFPQFastScan" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFPQFastScan" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFPQFastScan" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFPQFastScan" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_IndexIVFPQFastScan" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  ecode7 = SWIG_AsVal_int(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "new_IndexIVFPQFastScan" "', argument " "7"" of type '" "int""'");
+  } 
+  arg7 = static_cast< int >(val7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFPQFastScan *)new faiss::IndexIVFPQFastScan(arg1,arg2,arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFPQFastScan, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQFastScan__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  faiss::MetricType arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  faiss::IndexIVFPQFastScan *result = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFPQFastScan" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFPQFastScan" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFPQFastScan" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFPQFastScan" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFPQFastScan" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_IndexIVFPQFastScan" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFPQFastScan *)new faiss::IndexIVFPQFastScan(arg1,arg2,arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFPQFastScan, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQFastScan__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  faiss::IndexIVFPQFastScan *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFPQFastScan" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFPQFastScan" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexIVFPQFastScan" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_IndexIVFPQFastScan" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_IndexIVFPQFastScan" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFPQFastScan *)new faiss::IndexIVFPQFastScan(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFPQFastScan, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQFastScan__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFPQFastScan *)new faiss::IndexIVFPQFastScan();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFPQFastScan, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQFastScan__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexIVFPQFastScan *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_faiss__IndexIVFPQ,  0  | 0);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFPQFastScan" "', argument " "1"" of type '" "faiss::IndexIVFPQ const &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_IndexIVFPQFastScan" "', argument " "1"" of type '" "faiss::IndexIVFPQ const &""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexIVFPQFastScan" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFPQFastScan *)new faiss::IndexIVFPQFastScan((faiss::IndexIVFPQ const &)*arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFPQFastScan, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQFastScan__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQ *arg1 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexIVFPQFastScan *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_faiss__IndexIVFPQ,  0  | 0);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIVFPQFastScan" "', argument " "1"" of type '" "faiss::IndexIVFPQ const &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_IndexIVFPQFastScan" "', argument " "1"" of type '" "faiss::IndexIVFPQ const &""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQ * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVFPQFastScan *)new faiss::IndexIVFPQFastScan((faiss::IndexIVFPQ const &)*arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVFPQFastScan, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIVFPQFastScan(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexIVFPQFastScan", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexIVFPQFastScan__SWIG_3(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_faiss__IndexIVFPQ, SWIG_POINTER_NO_NULL | 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexIVFPQFastScan__SWIG_5(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_faiss__IndexIVFPQ, SWIG_POINTER_NO_NULL | 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexIVFPQFastScan__SWIG_4(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_IndexIVFPQFastScan__SWIG_2(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_new_IndexIVFPQFastScan__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_int(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  return _wrap_new_IndexIVFPQFastScan__SWIG_0(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexIVFPQFastScan'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFPQFastScan::IndexIVFPQFastScan(faiss::Index *,size_t,size_t,size_t,size_t,faiss::MetricType,int)\n"
+    "    faiss::IndexIVFPQFastScan::IndexIVFPQFastScan(faiss::Index *,size_t,size_t,size_t,size_t,faiss::MetricType)\n"
+    "    faiss::IndexIVFPQFastScan::IndexIVFPQFastScan(faiss::Index *,size_t,size_t,size_t,size_t)\n"
+    "    faiss::IndexIVFPQFastScan::IndexIVFPQFastScan()\n"
+    "    faiss::IndexIVFPQFastScan::IndexIVFPQFastScan(faiss::IndexIVFPQ const &,int)\n"
+    "    faiss::IndexIVFPQFastScan::IndexIVFPQFastScan(faiss::IndexIVFPQ const &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_orig_invlists_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_orig_invlists_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_orig_invlists_set" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIVFPQFastScan_orig_invlists_set" "', argument " "2"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  if (arg1) (arg1)->orig_invlists = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_orig_invlists_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::InvertedLists *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_orig_invlists_get" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  result = (faiss::InvertedLists *) ((arg1)->orig_invlists);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_train_residual(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_train_residual", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_train_residual" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_train_residual" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQFastScan_train_residual" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train_residual(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_precompute_table(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_precompute_table" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->precompute_table();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_encode_vectors__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  bool arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  bool val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQFastScan_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQFastScan_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQFastScan_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  ecode6 = SWIG_AsVal_bool(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "IndexIVFPQFastScan_encode_vectors" "', argument " "6"" of type '" "bool""'");
+  } 
+  arg6 = static_cast< bool >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQFastScan const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_encode_vectors__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  uint8_t *arg5 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_encode_vectors" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_encode_vectors" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQFastScan_encode_vectors" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQFastScan_encode_vectors" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQFastScan_encode_vectors" "', argument " "5"" of type '" "uint8_t *""'"); 
+  }
+  arg5 = reinterpret_cast< uint8_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQFastScan const *)arg1)->encode_vectors(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_encode_vectors(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_encode_vectors", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_IndexIVFPQFastScan_encode_vectors__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_unsigned_char, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              {
+                int res = SWIG_AsVal_bool(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_IndexIVFPQFastScan_encode_vectors__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexIVFPQFastScan_encode_vectors'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIVFPQFastScan::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *,bool) const\n"
+    "    faiss::IndexIVFPQFastScan::encode_vectors(faiss::Index::idx_t,float const *,faiss::Index::idx_t const *,uint8_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_add_with_ids" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_add_with_ids" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQFastScan_add_with_ids" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQFastScan_add_with_ids" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_search" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQFastScan_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIVFPQFastScan_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQFastScan_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVFPQFastScan_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQFastScan const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_compute_LUT(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  faiss::AlignedTable< float > *arg6 = 0 ;
+  faiss::AlignedTable< float > *arg7 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_compute_LUT", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_compute_LUT" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_compute_LUT" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQFastScan_compute_LUT" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQFastScan_compute_LUT" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQFastScan_compute_LUT" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6, SWIGTYPE_p_faiss__AlignedTableT_float_32_t,  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVFPQFastScan_compute_LUT" "', argument " "6"" of type '" "faiss::AlignedTable< float > &""'"); 
+  }
+  if (!argp6) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIVFPQFastScan_compute_LUT" "', argument " "6"" of type '" "faiss::AlignedTable< float > &""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::AlignedTable< float > * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7, SWIGTYPE_p_faiss__AlignedTableT_float_32_t,  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVFPQFastScan_compute_LUT" "', argument " "7"" of type '" "faiss::AlignedTable< float > &""'"); 
+  }
+  if (!argp7) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIVFPQFastScan_compute_LUT" "', argument " "7"" of type '" "faiss::AlignedTable< float > &""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::AlignedTable< float > * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQFastScan const *)arg1)->compute_LUT(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,(float const *)arg5,*arg6,*arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIVFPQFastScan_compute_LUT_uint8(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  faiss::AlignedTable< uint8_t > *arg6 = 0 ;
+  faiss::AlignedTable< uint16_t > *arg7 = 0 ;
+  float *arg8 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  PyObject *swig_obj[8] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIVFPQFastScan_compute_LUT_uint8", 8, 8, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIVFPQFastScan_compute_LUT_uint8" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIVFPQFastScan_compute_LUT_uint8" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIVFPQFastScan_compute_LUT_uint8" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIVFPQFastScan_compute_LUT_uint8" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIVFPQFastScan_compute_LUT_uint8" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6, SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t,  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIVFPQFastScan_compute_LUT_uint8" "', argument " "6"" of type '" "faiss::AlignedTable< uint8_t > &""'"); 
+  }
+  if (!argp6) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIVFPQFastScan_compute_LUT_uint8" "', argument " "6"" of type '" "faiss::AlignedTable< uint8_t > &""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7, SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t,  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexIVFPQFastScan_compute_LUT_uint8" "', argument " "7"" of type '" "faiss::AlignedTable< uint16_t > &""'"); 
+  }
+  if (!argp7) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIVFPQFastScan_compute_LUT_uint8" "', argument " "7"" of type '" "faiss::AlignedTable< uint16_t > &""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexIVFPQFastScan_compute_LUT_uint8" "', argument " "8"" of type '" "float *""'"); 
+  }
+  arg8 = reinterpret_cast< float * >(argp8);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIVFPQFastScan const *)arg1)->compute_LUT_uint8(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4,(float const *)arg5,*arg6,*arg7,arg8);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIVFPQFastScan(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIVFPQFastScan *arg1 = (faiss::IndexIVFPQFastScan *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIVFPQFastScan, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIVFPQFastScan" "', argument " "1"" of type '" "faiss::IndexIVFPQFastScan *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIVFPQFastScan * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexIVFPQFastScan_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIVFPQFastScan, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIVFPQFastScan_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_times_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  uint64_t *arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IVFFastScanStats_times_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_times_set" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IVFFastScanStats_times_set" "', argument " "2"" of type '" "uint64_t [10]""'"); 
+  } 
+  arg2 = reinterpret_cast< uint64_t * >(argp2);
+  {
+    if (arg2) {
+      size_t ii = 0;
+      for (; ii < (size_t)10; ++ii) *(uint64_t *)&arg1->times[ii] = *((uint64_t *)arg2 + ii);
+    } else {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in variable '""times""' of type '""uint64_t [10]""'");
+    }
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_times_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_times_get" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  result = (uint64_t *)(uint64_t *) ((arg1)->times);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_t_compute_distance_tables_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IVFFastScanStats_t_compute_distance_tables_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_t_compute_distance_tables_set" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IVFFastScanStats_t_compute_distance_tables_set" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  if (arg1) (arg1)->t_compute_distance_tables = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_t_compute_distance_tables_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_t_compute_distance_tables_get" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  result = (uint64_t) ((arg1)->t_compute_distance_tables);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_t_round_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IVFFastScanStats_t_round_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_t_round_set" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IVFFastScanStats_t_round_set" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  if (arg1) (arg1)->t_round = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_t_round_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_t_round_get" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  result = (uint64_t) ((arg1)->t_round);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_t_copy_pack_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IVFFastScanStats_t_copy_pack_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_t_copy_pack_set" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IVFFastScanStats_t_copy_pack_set" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  if (arg1) (arg1)->t_copy_pack = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_t_copy_pack_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_t_copy_pack_get" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  result = (uint64_t) ((arg1)->t_copy_pack);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_t_scan_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IVFFastScanStats_t_scan_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_t_scan_set" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IVFFastScanStats_t_scan_set" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  if (arg1) (arg1)->t_scan = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_t_scan_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_t_scan_get" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  result = (uint64_t) ((arg1)->t_scan);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_t_to_flat_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  uint64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IVFFastScanStats_t_to_flat_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_t_to_flat_set" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  ecode2 = SWIG_AsVal_unsigned_SS_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IVFFastScanStats_t_to_flat_set" "', argument " "2"" of type '" "uint64_t""'");
+  } 
+  arg2 = static_cast< uint64_t >(val2);
+  if (arg1) (arg1)->t_to_flat = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_t_to_flat_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_t_to_flat_get" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  result = (uint64_t) ((arg1)->t_to_flat);
+  resultobj = SWIG_From_unsigned_SS_long(static_cast< unsigned long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_reservoir_times_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  uint64_t *arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IVFFastScanStats_reservoir_times_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_reservoir_times_set" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IVFFastScanStats_reservoir_times_set" "', argument " "2"" of type '" "uint64_t [4]""'"); 
+  } 
+  arg2 = reinterpret_cast< uint64_t * >(argp2);
+  {
+    if (arg2) {
+      size_t ii = 0;
+      for (; ii < (size_t)4; ++ii) *(uint64_t *)&arg1->reservoir_times[ii] = *((uint64_t *)arg2 + ii);
+    } else {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in variable '""reservoir_times""' of type '""uint64_t [4]""'");
+    }
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_reservoir_times_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint64_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_reservoir_times_get" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  result = (uint64_t *)(uint64_t *) ((arg1)->reservoir_times);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_Mcy_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IVFFastScanStats_Mcy_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_Mcy_at" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IVFFastScanStats_Mcy_at" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)(arg1)->Mcy_at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_Mcy_reservoir_at(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IVFFastScanStats_Mcy_reservoir_at", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_Mcy_reservoir_at" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IVFFastScanStats_Mcy_reservoir_at" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)(arg1)->Mcy_reservoir_at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IVFFastScanStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_IVFFastScanStats", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IVFFastScanStats *)new faiss::IVFFastScanStats();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IVFFastScanStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IVFFastScanStats_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IVFFastScanStats_reset" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IVFFastScanStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IVFFastScanStats *arg1 = (faiss::IVFFastScanStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IVFFastScanStats, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IVFFastScanStats" "', argument " "1"" of type '" "faiss::IVFFastScanStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IVFFastScanStats * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IVFFastScanStats_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IVFFastScanStats, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IVFFastScanStats_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN int Swig_var_IVFFastScan_stats_set(PyObject *_val) {
+  {
+    void *argp = 0;
+    int res = SWIG_ConvertPtr(_val, &argp, SWIGTYPE_p_faiss__IVFFastScanStats,  0  | 0);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::IVFFastScan_stats""' of type '""faiss::IVFFastScanStats""'");
+    }
+    if (!argp) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in variable '""faiss::IVFFastScan_stats""' of type '""faiss::IVFFastScanStats""'");
+    } else {
+      faiss::IVFFastScanStats * temp;
+      temp  = reinterpret_cast< faiss::IVFFastScanStats * >(argp);
+      faiss::IVFFastScan_stats = *temp;
+      if (SWIG_IsNewObj(res)) delete temp;
+    }
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_IVFFastScan_stats_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_NewPointerObj(SWIG_as_voidptr(&faiss::IVFFastScan_stats), SWIGTYPE_p_faiss__IVFFastScanStats,  0 );
+  return pyobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_round_uint8_per_column__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  float *arg5 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "round_uint8_per_column" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "round_uint8_per_column" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "round_uint8_per_column" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "round_uint8_per_column" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "round_uint8_per_column" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::quantize_lut::round_uint8_per_column(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_round_uint8_per_column__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "round_uint8_per_column" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "round_uint8_per_column" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "round_uint8_per_column" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "round_uint8_per_column" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::quantize_lut::round_uint8_per_column(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_round_uint8_per_column__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "round_uint8_per_column" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "round_uint8_per_column" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "round_uint8_per_column" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::quantize_lut::round_uint8_per_column(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_round_uint8_per_column(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "round_uint8_per_column", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_float, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_round_uint8_per_column__SWIG_2(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_float, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_round_uint8_per_column__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_float, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_float, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_round_uint8_per_column__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'round_uint8_per_column'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::quantize_lut::round_uint8_per_column(float *,size_t,size_t,float *,float *)\n"
+    "    faiss::quantize_lut::round_uint8_per_column(float *,size_t,size_t,float *)\n"
+    "    faiss::quantize_lut::round_uint8_per_column(float *,size_t,size_t)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_round_uint8_per_column_multi__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  float *arg6 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "round_uint8_per_column_multi" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "round_uint8_per_column_multi" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "round_uint8_per_column_multi" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "round_uint8_per_column_multi" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "round_uint8_per_column_multi" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "round_uint8_per_column_multi" "', argument " "6"" of type '" "float *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::quantize_lut::round_uint8_per_column_multi(arg1,arg2,arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_round_uint8_per_column_multi__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "round_uint8_per_column_multi" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "round_uint8_per_column_multi" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "round_uint8_per_column_multi" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "round_uint8_per_column_multi" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "round_uint8_per_column_multi" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::quantize_lut::round_uint8_per_column_multi(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_round_uint8_per_column_multi__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "round_uint8_per_column_multi" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "round_uint8_per_column_multi" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "round_uint8_per_column_multi" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "round_uint8_per_column_multi" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::quantize_lut::round_uint8_per_column_multi(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_round_uint8_per_column_multi(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "round_uint8_per_column_multi", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_float, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_round_uint8_per_column_multi__SWIG_2(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_float, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_round_uint8_per_column_multi__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_float, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_round_uint8_per_column_multi__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'round_uint8_per_column_multi'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::quantize_lut::round_uint8_per_column_multi(float *,size_t,size_t,size_t,float *,float *)\n"
+    "    faiss::quantize_lut::round_uint8_per_column_multi(float *,size_t,size_t,size_t,float *)\n"
+    "    faiss::quantize_lut::round_uint8_per_column_multi(float *,size_t,size_t,size_t)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_quantize_LUT_and_bias__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  bool arg4 ;
+  float *arg5 = (float *) 0 ;
+  float *arg6 = (float *) 0 ;
+  uint8_t *arg7 = (uint8_t *) 0 ;
+  size_t arg8 ;
+  uint16_t *arg9 = (uint16_t *) 0 ;
+  float *arg10 = (float *) 0 ;
+  float *arg11 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  bool val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  size_t val8 ;
+  int ecode8 = 0 ;
+  void *argp9 = 0 ;
+  int res9 = 0 ;
+  void *argp10 = 0 ;
+  int res10 = 0 ;
+  void *argp11 = 0 ;
+  int res11 = 0 ;
+  
+  if ((nobjs < 11) || (nobjs > 11)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "quantize_LUT_and_bias" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "quantize_LUT_and_bias" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "quantize_LUT_and_bias" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_bool(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "quantize_LUT_and_bias" "', argument " "4"" of type '" "bool""'");
+  } 
+  arg4 = static_cast< bool >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "quantize_LUT_and_bias" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "quantize_LUT_and_bias" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "quantize_LUT_and_bias" "', argument " "7"" of type '" "uint8_t *""'"); 
+  }
+  arg7 = reinterpret_cast< uint8_t * >(argp7);
+  ecode8 = SWIG_AsVal_size_t(swig_obj[7], &val8);
+  if (!SWIG_IsOK(ecode8)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode8), "in method '" "quantize_LUT_and_bias" "', argument " "8"" of type '" "size_t""'");
+  } 
+  arg8 = static_cast< size_t >(val8);
+  res9 = SWIG_ConvertPtr(swig_obj[8], &argp9,SWIGTYPE_p_unsigned_short, 0 |  0 );
+  if (!SWIG_IsOK(res9)) {
+    SWIG_exception_fail(SWIG_ArgError(res9), "in method '" "quantize_LUT_and_bias" "', argument " "9"" of type '" "uint16_t *""'"); 
+  }
+  arg9 = reinterpret_cast< uint16_t * >(argp9);
+  res10 = SWIG_ConvertPtr(swig_obj[9], &argp10,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res10)) {
+    SWIG_exception_fail(SWIG_ArgError(res10), "in method '" "quantize_LUT_and_bias" "', argument " "10"" of type '" "float *""'"); 
+  }
+  arg10 = reinterpret_cast< float * >(argp10);
+  res11 = SWIG_ConvertPtr(swig_obj[10], &argp11,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res11)) {
+    SWIG_exception_fail(SWIG_ArgError(res11), "in method '" "quantize_LUT_and_bias" "', argument " "11"" of type '" "float *""'"); 
+  }
+  arg11 = reinterpret_cast< float * >(argp11);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::quantize_lut::quantize_LUT_and_bias(arg1,arg2,arg3,arg4,(float const *)arg5,(float const *)arg6,arg7,arg8,arg9,arg10,arg11);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_quantize_LUT_and_bias__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  bool arg4 ;
+  float *arg5 = (float *) 0 ;
+  float *arg6 = (float *) 0 ;
+  uint8_t *arg7 = (uint8_t *) 0 ;
+  size_t arg8 ;
+  uint16_t *arg9 = (uint16_t *) 0 ;
+  float *arg10 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  bool val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  size_t val8 ;
+  int ecode8 = 0 ;
+  void *argp9 = 0 ;
+  int res9 = 0 ;
+  void *argp10 = 0 ;
+  int res10 = 0 ;
+  
+  if ((nobjs < 10) || (nobjs > 10)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "quantize_LUT_and_bias" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "quantize_LUT_and_bias" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "quantize_LUT_and_bias" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_bool(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "quantize_LUT_and_bias" "', argument " "4"" of type '" "bool""'");
+  } 
+  arg4 = static_cast< bool >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "quantize_LUT_and_bias" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "quantize_LUT_and_bias" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "quantize_LUT_and_bias" "', argument " "7"" of type '" "uint8_t *""'"); 
+  }
+  arg7 = reinterpret_cast< uint8_t * >(argp7);
+  ecode8 = SWIG_AsVal_size_t(swig_obj[7], &val8);
+  if (!SWIG_IsOK(ecode8)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode8), "in method '" "quantize_LUT_and_bias" "', argument " "8"" of type '" "size_t""'");
+  } 
+  arg8 = static_cast< size_t >(val8);
+  res9 = SWIG_ConvertPtr(swig_obj[8], &argp9,SWIGTYPE_p_unsigned_short, 0 |  0 );
+  if (!SWIG_IsOK(res9)) {
+    SWIG_exception_fail(SWIG_ArgError(res9), "in method '" "quantize_LUT_and_bias" "', argument " "9"" of type '" "uint16_t *""'"); 
+  }
+  arg9 = reinterpret_cast< uint16_t * >(argp9);
+  res10 = SWIG_ConvertPtr(swig_obj[9], &argp10,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res10)) {
+    SWIG_exception_fail(SWIG_ArgError(res10), "in method '" "quantize_LUT_and_bias" "', argument " "10"" of type '" "float *""'"); 
+  }
+  arg10 = reinterpret_cast< float * >(argp10);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::quantize_lut::quantize_LUT_and_bias(arg1,arg2,arg3,arg4,(float const *)arg5,(float const *)arg6,arg7,arg8,arg9,arg10);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_quantize_LUT_and_bias__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  bool arg4 ;
+  float *arg5 = (float *) 0 ;
+  float *arg6 = (float *) 0 ;
+  uint8_t *arg7 = (uint8_t *) 0 ;
+  size_t arg8 ;
+  uint16_t *arg9 = (uint16_t *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  bool val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  size_t val8 ;
+  int ecode8 = 0 ;
+  void *argp9 = 0 ;
+  int res9 = 0 ;
+  
+  if ((nobjs < 9) || (nobjs > 9)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "quantize_LUT_and_bias" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "quantize_LUT_and_bias" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "quantize_LUT_and_bias" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_bool(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "quantize_LUT_and_bias" "', argument " "4"" of type '" "bool""'");
+  } 
+  arg4 = static_cast< bool >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "quantize_LUT_and_bias" "', argument " "5"" of type '" "float const *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "quantize_LUT_and_bias" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "quantize_LUT_and_bias" "', argument " "7"" of type '" "uint8_t *""'"); 
+  }
+  arg7 = reinterpret_cast< uint8_t * >(argp7);
+  ecode8 = SWIG_AsVal_size_t(swig_obj[7], &val8);
+  if (!SWIG_IsOK(ecode8)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode8), "in method '" "quantize_LUT_and_bias" "', argument " "8"" of type '" "size_t""'");
+  } 
+  arg8 = static_cast< size_t >(val8);
+  res9 = SWIG_ConvertPtr(swig_obj[8], &argp9,SWIGTYPE_p_unsigned_short, 0 |  0 );
+  if (!SWIG_IsOK(res9)) {
+    SWIG_exception_fail(SWIG_ArgError(res9), "in method '" "quantize_LUT_and_bias" "', argument " "9"" of type '" "uint16_t *""'"); 
+  }
+  arg9 = reinterpret_cast< uint16_t * >(argp9);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::quantize_lut::quantize_LUT_and_bias(arg1,arg2,arg3,arg4,(float const *)arg5,(float const *)arg6,arg7,arg8,arg9);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_quantize_LUT_and_bias(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[12] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "quantize_LUT_and_bias", 0, 11, argv))) SWIG_fail;
+  --argc;
+  if (argc == 9) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_bool(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_unsigned_char, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  {
+                    int res = SWIG_AsVal_size_t(argv[7], NULL);
+                    _v = SWIG_CheckState(res);
+                  }
+                  if (_v) {
+                    void *vptr = 0;
+                    int res = SWIG_ConvertPtr(argv[8], &vptr, SWIGTYPE_p_unsigned_short, 0);
+                    _v = SWIG_CheckState(res);
+                    if (_v) {
+                      return _wrap_quantize_LUT_and_bias__SWIG_2(self, argc, argv);
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 10) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_bool(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_unsigned_char, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  {
+                    int res = SWIG_AsVal_size_t(argv[7], NULL);
+                    _v = SWIG_CheckState(res);
+                  }
+                  if (_v) {
+                    void *vptr = 0;
+                    int res = SWIG_ConvertPtr(argv[8], &vptr, SWIGTYPE_p_unsigned_short, 0);
+                    _v = SWIG_CheckState(res);
+                    if (_v) {
+                      void *vptr = 0;
+                      int res = SWIG_ConvertPtr(argv[9], &vptr, SWIGTYPE_p_float, 0);
+                      _v = SWIG_CheckState(res);
+                      if (_v) {
+                        return _wrap_quantize_LUT_and_bias__SWIG_1(self, argc, argv);
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 11) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_bool(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_float, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_float, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_unsigned_char, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  {
+                    int res = SWIG_AsVal_size_t(argv[7], NULL);
+                    _v = SWIG_CheckState(res);
+                  }
+                  if (_v) {
+                    void *vptr = 0;
+                    int res = SWIG_ConvertPtr(argv[8], &vptr, SWIGTYPE_p_unsigned_short, 0);
+                    _v = SWIG_CheckState(res);
+                    if (_v) {
+                      void *vptr = 0;
+                      int res = SWIG_ConvertPtr(argv[9], &vptr, SWIGTYPE_p_float, 0);
+                      _v = SWIG_CheckState(res);
+                      if (_v) {
+                        void *vptr = 0;
+                        int res = SWIG_ConvertPtr(argv[10], &vptr, SWIGTYPE_p_float, 0);
+                        _v = SWIG_CheckState(res);
+                        if (_v) {
+                          return _wrap_quantize_LUT_and_bias__SWIG_0(self, argc, argv);
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'quantize_LUT_and_bias'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::quantize_lut::quantize_LUT_and_bias(size_t,size_t,size_t,bool,float const *,float const *,uint8_t *,size_t,uint16_t *,float *,float *)\n"
+    "    faiss::quantize_lut::quantize_LUT_and_bias(size_t,size_t,size_t,bool,float const *,float const *,uint8_t *,size_t,uint16_t *,float *)\n"
+    "    faiss::quantize_lut::quantize_LUT_and_bias(size_t,size_t,size_t,bool,float const *,float const *,uint8_t *,size_t,uint16_t *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_d_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_d_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_d_set" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_d_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->d = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_d_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_d_get" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  result = (int) ((arg1)->d);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_code_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_code_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_code_size_set" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_code_size_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->code_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_code_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_code_size_get" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  result = (int) ((arg1)->code_size);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_ntotal_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_ntotal_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_ntotal_set" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_ntotal_set" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  if (arg1) (arg1)->ntotal = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_ntotal_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IndexBinary::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_ntotal_get" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  result = (faiss::IndexBinary::idx_t) ((arg1)->ntotal);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_verbose_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_verbose_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_verbose_set" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_verbose_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->verbose = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_verbose_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_verbose_get" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  result = (bool) ((arg1)->verbose);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_is_trained_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_is_trained_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_is_trained_set" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_is_trained_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->is_trained = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_is_trained_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_is_trained_get" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  result = (bool) ((arg1)->is_trained);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_metric_type_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::MetricType arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_metric_type_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_metric_type_set" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_metric_type_set" "', argument " "2"" of type '" "faiss::MetricType""'");
+  } 
+  arg2 = static_cast< faiss::MetricType >(val2);
+  if (arg1) (arg1)->metric_type = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_metric_type_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::MetricType result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_metric_type_get" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  result = (faiss::MetricType) ((arg1)->metric_type);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexBinary(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexBinary" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_train" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_train" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinary_train" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_add" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_add" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinary_add" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg4 = (faiss::IndexBinary::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_add_with_ids" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_add_with_ids" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinary_add_with_ids" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexBinary_add_with_ids" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(uint8_t const *)arg3,(faiss::IndexBinary::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t arg4 ;
+  int32_t *arg5 = (int32_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg6 = (faiss::IndexBinary::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_search" "', argument " "1"" of type '" "faiss::IndexBinary const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_search" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinary_search" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinary_search" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexBinary::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinary_search" "', argument " "5"" of type '" "int32_t *""'"); 
+  }
+  arg5 = reinterpret_cast< int32_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinary_search" "', argument " "6"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinary const *)arg1)->search(arg2,(uint8_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_range_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  int arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_range_search", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_range_search" "', argument " "1"" of type '" "faiss::IndexBinary const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_range_search" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinary_range_search" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinary_range_search" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinary_range_search" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinary const *)arg1)->range_search(arg2,(uint8_t const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_assign__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg4 = (faiss::IndexBinary::idx_t *) 0 ;
+  faiss::IndexBinary::idx_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_assign" "', argument " "1"" of type '" "faiss::IndexBinary const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_assign" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinary_assign" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexBinary_assign" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "IndexBinary_assign" "', argument " "5"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg5 = static_cast< faiss::IndexBinary::idx_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinary const *)arg1)->assign(arg2,(uint8_t const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_assign__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg4 = (faiss::IndexBinary::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_assign" "', argument " "1"" of type '" "faiss::IndexBinary const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_assign" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinary_assign" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexBinary_assign" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinary const *)arg1)->assign(arg2,(uint8_t const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_assign(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexBinary_assign", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinary, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_unsigned_char, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_IndexBinary_assign__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinary, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_unsigned_char, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_IndexBinary_assign__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexBinary_assign'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexBinary::assign(faiss::IndexBinary::idx_t,uint8_t const *,faiss::IndexBinary::idx_t *,faiss::IndexBinary::idx_t) const\n"
+    "    faiss::IndexBinary::assign(faiss::IndexBinary::idx_t,uint8_t const *,faiss::IndexBinary::idx_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_reset" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_remove_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_remove_ids" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinary_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexBinary_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_reconstruct" "', argument " "1"" of type '" "faiss::IndexBinary const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_reconstruct" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinary_reconstruct" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinary const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_reconstruct_n(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  faiss::IndexBinary::idx_t arg3 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_reconstruct_n", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_reconstruct_n" "', argument " "1"" of type '" "faiss::IndexBinary const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_reconstruct_n" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexBinary_reconstruct_n" "', argument " "3"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::IndexBinary::idx_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexBinary_reconstruct_n" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinary const *)arg1)->reconstruct_n(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_search_and_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t arg4 ;
+  int32_t *arg5 = (int32_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg6 = (faiss::IndexBinary::idx_t *) 0 ;
+  uint8_t *arg7 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinary_search_and_reconstruct", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_search_and_reconstruct" "', argument " "1"" of type '" "faiss::IndexBinary const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinary_search_and_reconstruct" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinary_search_and_reconstruct" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinary_search_and_reconstruct" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexBinary::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinary_search_and_reconstruct" "', argument " "5"" of type '" "int32_t *""'"); 
+  }
+  arg5 = reinterpret_cast< int32_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinary_search_and_reconstruct" "', argument " "6"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexBinary_search_and_reconstruct" "', argument " "7"" of type '" "uint8_t *""'"); 
+  }
+  arg7 = reinterpret_cast< uint8_t * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinary const *)arg1)->search_and_reconstruct(arg2,(uint8_t const *)arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinary_display(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinary_display" "', argument " "1"" of type '" "faiss::IndexBinary const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinary const *)arg1)->display();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexBinary_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexBinary, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFlat_xb_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *arg1 = (faiss::IndexBinaryFlat *) 0 ;
+  std::vector< uint8_t > *arg2 = (std::vector< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryFlat_xb_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFlat_xb_set" "', argument " "1"" of type '" "faiss::IndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryFlat_xb_set" "', argument " "2"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< uint8_t > * >(argp2);
+  if (arg1) (arg1)->xb = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFlat_xb_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *arg1 = (faiss::IndexBinaryFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< uint8_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFlat_xb_get" "', argument " "1"" of type '" "faiss::IndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp1);
+  result = (std::vector< uint8_t > *)& ((arg1)->xb);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFlat_use_heap_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *arg1 = (faiss::IndexBinaryFlat *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryFlat_use_heap_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFlat_use_heap_set" "', argument " "1"" of type '" "faiss::IndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryFlat_use_heap_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->use_heap = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFlat_use_heap_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *arg1 = (faiss::IndexBinaryFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFlat_use_heap_get" "', argument " "1"" of type '" "faiss::IndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp1);
+  result = (bool) ((arg1)->use_heap);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFlat_query_batch_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *arg1 = (faiss::IndexBinaryFlat *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryFlat_query_batch_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFlat_query_batch_size_set" "', argument " "1"" of type '" "faiss::IndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryFlat_query_batch_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->query_batch_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFlat_query_batch_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *arg1 = (faiss::IndexBinaryFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFlat_query_batch_size_get" "', argument " "1"" of type '" "faiss::IndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp1);
+  result = (size_t) ((arg1)->query_batch_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryFlat__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary::idx_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexBinaryFlat *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryFlat" "', argument " "1"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::IndexBinary::idx_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryFlat *)new faiss::IndexBinaryFlat(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFlat_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *arg1 = (faiss::IndexBinaryFlat *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryFlat_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFlat_add" "', argument " "1"" of type '" "faiss::IndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryFlat_add" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryFlat_add" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFlat_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *arg1 = (faiss::IndexBinaryFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFlat_reset" "', argument " "1"" of type '" "faiss::IndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFlat_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *arg1 = (faiss::IndexBinaryFlat *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t arg4 ;
+  int32_t *arg5 = (int32_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg6 = (faiss::IndexBinary::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryFlat_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFlat_search" "', argument " "1"" of type '" "faiss::IndexBinaryFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryFlat_search" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryFlat_search" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryFlat_search" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexBinary::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryFlat_search" "', argument " "5"" of type '" "int32_t *""'"); 
+  }
+  arg5 = reinterpret_cast< int32_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinaryFlat_search" "', argument " "6"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryFlat const *)arg1)->search(arg2,(uint8_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFlat_range_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *arg1 = (faiss::IndexBinaryFlat *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  int arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryFlat_range_search", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFlat_range_search" "', argument " "1"" of type '" "faiss::IndexBinaryFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryFlat_range_search" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryFlat_range_search" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryFlat_range_search" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryFlat_range_search" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryFlat const *)arg1)->range_search(arg2,(uint8_t const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFlat_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *arg1 = (faiss::IndexBinaryFlat *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryFlat_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFlat_reconstruct" "', argument " "1"" of type '" "faiss::IndexBinaryFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryFlat_reconstruct" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryFlat_reconstruct" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryFlat const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFlat_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *arg1 = (faiss::IndexBinaryFlat *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryFlat_remove_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFlat_remove_ids" "', argument " "1"" of type '" "faiss::IndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryFlat_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexBinaryFlat_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryFlat__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryFlat *)new faiss::IndexBinaryFlat();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryFlat(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexBinaryFlat", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexBinaryFlat__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexBinaryFlat__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexBinaryFlat'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexBinaryFlat::IndexBinaryFlat(faiss::IndexBinary::idx_t)\n"
+    "    faiss::IndexBinaryFlat::IndexBinaryFlat()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexBinaryFlat(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFlat *arg1 = (faiss::IndexBinaryFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFlat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexBinaryFlat" "', argument " "1"" of type '" "faiss::IndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexBinaryFlat_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexBinaryFlat, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexBinaryFlat_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_invlists_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_invlists_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_invlists_set" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIVF_invlists_set" "', argument " "2"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  if (arg1) (arg1)->invlists = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_invlists_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::InvertedLists *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_invlists_get" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  result = (faiss::InvertedLists *) ((arg1)->invlists);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_own_invlists_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_own_invlists_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_own_invlists_set" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_own_invlists_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_invlists = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_own_invlists_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_own_invlists_get" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  result = (bool) ((arg1)->own_invlists);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_nprobe_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_nprobe_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_nprobe_set" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_nprobe_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nprobe = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_nprobe_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_nprobe_get" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  result = (size_t) ((arg1)->nprobe);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_max_codes_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_max_codes_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_max_codes_set" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_max_codes_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->max_codes = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_max_codes_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_max_codes_get" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  result = (size_t) ((arg1)->max_codes);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_use_heap_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_use_heap_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_use_heap_set" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_use_heap_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->use_heap = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_use_heap_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_use_heap_get" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  result = (bool) ((arg1)->use_heap);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_direct_map_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::DirectMap *arg2 = (faiss::DirectMap *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_direct_map_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_direct_map_set" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIVF_direct_map_set" "', argument " "2"" of type '" "faiss::DirectMap *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::DirectMap * >(argp2);
+  if (arg1) (arg1)->direct_map = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_direct_map_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DirectMap *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_direct_map_get" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  result = (faiss::DirectMap *)& ((arg1)->direct_map);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DirectMap, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_quantizer_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary *arg2 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_quantizer_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_quantizer_set" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinary, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIVF_quantizer_set" "', argument " "2"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinary * >(argp2);
+  if (arg1) (arg1)->quantizer = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_quantizer_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IndexBinary *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_quantizer_get" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  result = (faiss::IndexBinary *) ((arg1)->quantizer);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_nlist_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_nlist_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_nlist_set" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_nlist_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nlist = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_nlist_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_nlist_get" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  result = (size_t) ((arg1)->nlist);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_own_fields_set" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_own_fields_get" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_cp_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::ClusteringParameters *arg2 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_cp_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_cp_set" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIVF_cp_set" "', argument " "2"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ClusteringParameters * >(argp2);
+  if (arg1) (arg1)->cp = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_cp_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ClusteringParameters *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_cp_get" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  result = (faiss::ClusteringParameters *)& ((arg1)->cp);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_clustering_index_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_clustering_index_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_clustering_index_set" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIVF_clustering_index_set" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  if (arg1) (arg1)->clustering_index = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_clustering_index_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_clustering_index_get" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  result = (faiss::Index *) ((arg1)->clustering_index);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryIVF__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexBinaryIVF *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexBinaryIVF" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexBinaryIVF" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexBinaryIVF" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryIVF *)new faiss::IndexBinaryIVF(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryIVF, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryIVF__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryIVF *)new faiss::IndexBinaryIVF();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryIVF, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryIVF(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexBinaryIVF", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexBinaryIVF__SWIG_1(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinary, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexBinaryIVF__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexBinaryIVF'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexBinaryIVF::IndexBinaryIVF(faiss::IndexBinary *,size_t,size_t)\n"
+    "    faiss::IndexBinaryIVF::IndexBinaryIVF()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexBinaryIVF(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexBinaryIVF" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_reset" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_train" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_train" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIVF_train" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_add" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_add" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIVF_add" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg4 = (faiss::IndexBinary::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_add_with_ids" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_add_with_ids" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIVF_add_with_ids" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexBinaryIVF_add_with_ids" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(uint8_t const *)arg3,(faiss::IndexBinary::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_add_core(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg4 = (faiss::IndexBinary::idx_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg5 = (faiss::IndexBinary::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_add_core", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_add_core" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_add_core" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIVF_add_core" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexBinaryIVF_add_core" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryIVF_add_core" "', argument " "5"" of type '" "faiss::IndexBinary::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_core(arg2,(uint8_t const *)arg3,(faiss::IndexBinary::idx_t const *)arg4,(faiss::IndexBinary::idx_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_search_preassigned__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t arg4 ;
+  faiss::IndexBinary::idx_t *arg5 = (faiss::IndexBinary::idx_t *) 0 ;
+  int32_t *arg6 = (int32_t *) 0 ;
+  int32_t *arg7 = (int32_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg8 = (faiss::IndexBinary::idx_t *) 0 ;
+  bool arg9 ;
+  faiss::IVFSearchParameters *arg10 = (faiss::IVFSearchParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  bool val9 ;
+  int ecode9 = 0 ;
+  void *argp10 = 0 ;
+  int res10 = 0 ;
+  
+  if ((nobjs < 10) || (nobjs > 10)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "1"" of type '" "faiss::IndexBinaryIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexBinary::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "5"" of type '" "faiss::IndexBinary::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "6"" of type '" "int32_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< int32_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "7"" of type '" "int32_t *""'"); 
+  }
+  arg7 = reinterpret_cast< int32_t * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "8"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp8);
+  ecode9 = SWIG_AsVal_bool(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "9"" of type '" "bool""'");
+  } 
+  arg9 = static_cast< bool >(val9);
+  res10 = SWIG_ConvertPtr(swig_obj[9], &argp10,SWIGTYPE_p_faiss__IVFSearchParameters, 0 |  0 );
+  if (!SWIG_IsOK(res10)) {
+    SWIG_exception_fail(SWIG_ArgError(res10), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "10"" of type '" "faiss::IVFSearchParameters const *""'"); 
+  }
+  arg10 = reinterpret_cast< faiss::IVFSearchParameters * >(argp10);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryIVF const *)arg1)->search_preassigned(arg2,(uint8_t const *)arg3,arg4,(faiss::IndexBinary::idx_t const *)arg5,(int32_t const *)arg6,arg7,arg8,arg9,(faiss::IVFSearchParameters const *)arg10);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_search_preassigned__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t arg4 ;
+  faiss::IndexBinary::idx_t *arg5 = (faiss::IndexBinary::idx_t *) 0 ;
+  int32_t *arg6 = (int32_t *) 0 ;
+  int32_t *arg7 = (int32_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg8 = (faiss::IndexBinary::idx_t *) 0 ;
+  bool arg9 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  void *argp8 = 0 ;
+  int res8 = 0 ;
+  bool val9 ;
+  int ecode9 = 0 ;
+  
+  if ((nobjs < 9) || (nobjs > 9)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "1"" of type '" "faiss::IndexBinaryIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexBinary::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "5"" of type '" "faiss::IndexBinary::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "6"" of type '" "int32_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< int32_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "7"" of type '" "int32_t *""'"); 
+  }
+  arg7 = reinterpret_cast< int32_t * >(argp7);
+  res8 = SWIG_ConvertPtr(swig_obj[7], &argp8,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res8)) {
+    SWIG_exception_fail(SWIG_ArgError(res8), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "8"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg8 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp8);
+  ecode9 = SWIG_AsVal_bool(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "IndexBinaryIVF_search_preassigned" "', argument " "9"" of type '" "bool""'");
+  } 
+  arg9 = static_cast< bool >(val9);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryIVF const *)arg1)->search_preassigned(arg2,(uint8_t const *)arg3,arg4,(faiss::IndexBinary::idx_t const *)arg5,(int32_t const *)arg6,arg7,arg8,arg9);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_search_preassigned(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[11] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_search_preassigned", 0, 10, argv))) SWIG_fail;
+  --argc;
+  if (argc == 9) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinaryIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_unsigned_char, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_int, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_int, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_bool(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      return _wrap_IndexBinaryIVF_search_preassigned__SWIG_1(self, argc, argv);
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 10) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinaryIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_unsigned_char, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            void *vptr = 0;
+            int res = SWIG_ConvertPtr(argv[4], &vptr, SWIGTYPE_p_long, 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_int, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                void *vptr = 0;
+                int res = SWIG_ConvertPtr(argv[6], &vptr, SWIGTYPE_p_int, 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  void *vptr = 0;
+                  int res = SWIG_ConvertPtr(argv[7], &vptr, SWIGTYPE_p_long, 0);
+                  _v = SWIG_CheckState(res);
+                  if (_v) {
+                    {
+                      int res = SWIG_AsVal_bool(argv[8], NULL);
+                      _v = SWIG_CheckState(res);
+                    }
+                    if (_v) {
+                      void *vptr = 0;
+                      int res = SWIG_ConvertPtr(argv[9], &vptr, SWIGTYPE_p_faiss__IVFSearchParameters, 0);
+                      _v = SWIG_CheckState(res);
+                      if (_v) {
+                        return _wrap_IndexBinaryIVF_search_preassigned__SWIG_0(self, argc, argv);
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexBinaryIVF_search_preassigned'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexBinaryIVF::search_preassigned(faiss::IndexBinary::idx_t,uint8_t const *,faiss::IndexBinary::idx_t,faiss::IndexBinary::idx_t const *,int32_t const *,int32_t *,faiss::IndexBinary::idx_t *,bool,faiss::IVFSearchParameters const *) const\n"
+    "    faiss::IndexBinaryIVF::search_preassigned(faiss::IndexBinary::idx_t,uint8_t const *,faiss::IndexBinary::idx_t,faiss::IndexBinary::idx_t const *,int32_t const *,int32_t *,faiss::IndexBinary::idx_t *,bool) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_get_InvertedListScanner__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::BinaryInvertedListScanner *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_get_InvertedListScanner" "', argument " "1"" of type '" "faiss::IndexBinaryIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_get_InvertedListScanner" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::BinaryInvertedListScanner *)((faiss::IndexBinaryIVF const *)arg1)->get_InvertedListScanner(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__BinaryInvertedListScanner, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_get_InvertedListScanner__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::BinaryInvertedListScanner *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_get_InvertedListScanner" "', argument " "1"" of type '" "faiss::IndexBinaryIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::BinaryInvertedListScanner *)((faiss::IndexBinaryIVF const *)arg1)->get_InvertedListScanner();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__BinaryInvertedListScanner, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_get_InvertedListScanner(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_get_InvertedListScanner", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinaryIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_IndexBinaryIVF_get_InvertedListScanner__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinaryIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_IndexBinaryIVF_get_InvertedListScanner__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexBinaryIVF_get_InvertedListScanner'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexBinaryIVF::get_InvertedListScanner(bool) const\n"
+    "    faiss::IndexBinaryIVF::get_InvertedListScanner() const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t arg4 ;
+  int32_t *arg5 = (int32_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg6 = (faiss::IndexBinary::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_search" "', argument " "1"" of type '" "faiss::IndexBinaryIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_search" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIVF_search" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryIVF_search" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexBinary::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryIVF_search" "', argument " "5"" of type '" "int32_t *""'"); 
+  }
+  arg5 = reinterpret_cast< int32_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinaryIVF_search" "', argument " "6"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryIVF const *)arg1)->search(arg2,(uint8_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_range_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  int arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_range_search", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_range_search" "', argument " "1"" of type '" "faiss::IndexBinaryIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_range_search" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIVF_range_search" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryIVF_range_search" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryIVF_range_search" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryIVF const *)arg1)->range_search(arg2,(uint8_t const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_range_search_preassigned(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  int arg4 ;
+  faiss::IndexBinary::idx_t *arg5 = (faiss::IndexBinary::idx_t *) 0 ;
+  int32_t *arg6 = (int32_t *) 0 ;
+  faiss::RangeSearchResult *arg7 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_range_search_preassigned", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_range_search_preassigned" "', argument " "1"" of type '" "faiss::IndexBinaryIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_range_search_preassigned" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIVF_range_search_preassigned" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryIVF_range_search_preassigned" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryIVF_range_search_preassigned" "', argument " "5"" of type '" "faiss::IndexBinary::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinaryIVF_range_search_preassigned" "', argument " "6"" of type '" "int32_t const *""'"); 
+  }
+  arg6 = reinterpret_cast< int32_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexBinaryIVF_range_search_preassigned" "', argument " "7"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg7 = reinterpret_cast< faiss::RangeSearchResult * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryIVF const *)arg1)->range_search_preassigned(arg2,(uint8_t const *)arg3,arg4,(faiss::IndexBinary::idx_t const *)arg5,(int32_t const *)arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_reconstruct" "', argument " "1"" of type '" "faiss::IndexBinaryIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_reconstruct" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIVF_reconstruct" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryIVF const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_reconstruct_n(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  faiss::IndexBinary::idx_t arg3 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_reconstruct_n", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_reconstruct_n" "', argument " "1"" of type '" "faiss::IndexBinaryIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_reconstruct_n" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexBinaryIVF_reconstruct_n" "', argument " "3"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::IndexBinary::idx_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexBinaryIVF_reconstruct_n" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryIVF const *)arg1)->reconstruct_n(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_search_and_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t arg4 ;
+  int32_t *arg5 = (int32_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg6 = (faiss::IndexBinary::idx_t *) 0 ;
+  uint8_t *arg7 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  void *argp7 = 0 ;
+  int res7 = 0 ;
+  PyObject *swig_obj[7] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_search_and_reconstruct", 7, 7, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_search_and_reconstruct" "', argument " "1"" of type '" "faiss::IndexBinaryIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_search_and_reconstruct" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIVF_search_and_reconstruct" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryIVF_search_and_reconstruct" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexBinary::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryIVF_search_and_reconstruct" "', argument " "5"" of type '" "int32_t *""'"); 
+  }
+  arg5 = reinterpret_cast< int32_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinaryIVF_search_and_reconstruct" "', argument " "6"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp6);
+  res7 = SWIG_ConvertPtr(swig_obj[6], &argp7,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res7)) {
+    SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "IndexBinaryIVF_search_and_reconstruct" "', argument " "7"" of type '" "uint8_t *""'"); 
+  }
+  arg7 = reinterpret_cast< uint8_t * >(argp7);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryIVF const *)arg1)->search_and_reconstruct(arg2,(uint8_t const *)arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_reconstruct_from_offset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  faiss::IndexBinary::idx_t arg3 ;
+  uint8_t *arg4 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_reconstruct_from_offset", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_reconstruct_from_offset" "', argument " "1"" of type '" "faiss::IndexBinaryIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_reconstruct_from_offset" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexBinaryIVF_reconstruct_from_offset" "', argument " "3"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::IndexBinary::idx_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexBinaryIVF_reconstruct_from_offset" "', argument " "4"" of type '" "uint8_t *""'"); 
+  }
+  arg4 = reinterpret_cast< uint8_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryIVF const *)arg1)->reconstruct_from_offset(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_remove_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_remove_ids" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIVF_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexBinaryIVF_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_merge_from(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::IndexBinaryIVF *arg2 = 0 ;
+  faiss::IndexBinary::idx_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_merge_from", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_merge_from" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IndexBinaryIVF,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIVF_merge_from" "', argument " "2"" of type '" "faiss::IndexBinaryIVF &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexBinaryIVF_merge_from" "', argument " "2"" of type '" "faiss::IndexBinaryIVF &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexBinaryIVF_merge_from" "', argument " "3"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::IndexBinary::idx_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->merge_from(*arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_get_list_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_get_list_size", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_get_list_size" "', argument " "1"" of type '" "faiss::IndexBinaryIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_get_list_size" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::IndexBinaryIVF const *)arg1)->get_list_size(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_make_direct_map__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_make_direct_map" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_make_direct_map" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->make_direct_map(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_make_direct_map__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_make_direct_map" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->make_direct_map();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_make_direct_map(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_make_direct_map", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinaryIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_IndexBinaryIVF_make_direct_map__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinaryIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_IndexBinaryIVF_make_direct_map__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexBinaryIVF_make_direct_map'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexBinaryIVF::make_direct_map(bool)\n"
+    "    faiss::IndexBinaryIVF::make_direct_map()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_set_direct_map_type(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::DirectMap::Type arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_set_direct_map_type", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_set_direct_map_type" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIVF_set_direct_map_type" "', argument " "2"" of type '" "faiss::DirectMap::Type""'");
+  } 
+  arg2 = static_cast< faiss::DirectMap::Type >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_direct_map_type(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_replace_invlists__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  bool arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_replace_invlists" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIVF_replace_invlists" "', argument " "2"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "IndexBinaryIVF_replace_invlists" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->replace_invlists(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_replace_invlists__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryIVF *arg1 = (faiss::IndexBinaryIVF *) 0 ;
+  faiss::InvertedLists *arg2 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIVF_replace_invlists" "', argument " "1"" of type '" "faiss::IndexBinaryIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIVF_replace_invlists" "', argument " "2"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::InvertedLists * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->replace_invlists(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIVF_replace_invlists(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "IndexBinaryIVF_replace_invlists", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinaryIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__InvertedLists, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_IndexBinaryIVF_replace_invlists__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinaryIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__InvertedLists, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_IndexBinaryIVF_replace_invlists__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'IndexBinaryIVF_replace_invlists'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexBinaryIVF::replace_invlists(faiss::InvertedLists *,bool)\n"
+    "    faiss::IndexBinaryIVF::replace_invlists(faiss::InvertedLists *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *IndexBinaryIVF_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexBinaryIVF, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexBinaryIVF_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFromFloat_index_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFromFloat *arg1 = (faiss::IndexBinaryFromFloat *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryFromFloat_index_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFromFloat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFromFloat_index_set" "', argument " "1"" of type '" "faiss::IndexBinaryFromFloat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFromFloat * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryFromFloat_index_set" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  if (arg1) (arg1)->index = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFromFloat_index_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFromFloat *arg1 = (faiss::IndexBinaryFromFloat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFromFloat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFromFloat_index_get" "', argument " "1"" of type '" "faiss::IndexBinaryFromFloat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFromFloat * >(argp1);
+  result = (faiss::Index *) ((arg1)->index);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFromFloat_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFromFloat *arg1 = (faiss::IndexBinaryFromFloat *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryFromFloat_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFromFloat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFromFloat_own_fields_set" "', argument " "1"" of type '" "faiss::IndexBinaryFromFloat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFromFloat * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryFromFloat_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFromFloat_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFromFloat *arg1 = (faiss::IndexBinaryFromFloat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFromFloat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFromFloat_own_fields_get" "', argument " "1"" of type '" "faiss::IndexBinaryFromFloat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFromFloat * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryFromFloat__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFromFloat *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryFromFloat *)new faiss::IndexBinaryFromFloat();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryFromFloat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryFromFloat__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexBinaryFromFloat *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexBinaryFromFloat" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryFromFloat *)new faiss::IndexBinaryFromFloat(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryFromFloat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryFromFloat(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexBinaryFromFloat", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexBinaryFromFloat__SWIG_0(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexBinaryFromFloat__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexBinaryFromFloat'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexBinaryFromFloat::IndexBinaryFromFloat()\n"
+    "    faiss::IndexBinaryFromFloat::IndexBinaryFromFloat(faiss::Index *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexBinaryFromFloat(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFromFloat *arg1 = (faiss::IndexBinaryFromFloat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFromFloat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexBinaryFromFloat" "', argument " "1"" of type '" "faiss::IndexBinaryFromFloat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFromFloat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFromFloat_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFromFloat *arg1 = (faiss::IndexBinaryFromFloat *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryFromFloat_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFromFloat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFromFloat_add" "', argument " "1"" of type '" "faiss::IndexBinaryFromFloat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFromFloat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryFromFloat_add" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryFromFloat_add" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFromFloat_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFromFloat *arg1 = (faiss::IndexBinaryFromFloat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFromFloat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFromFloat_reset" "', argument " "1"" of type '" "faiss::IndexBinaryFromFloat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFromFloat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFromFloat_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFromFloat *arg1 = (faiss::IndexBinaryFromFloat *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t arg4 ;
+  int32_t *arg5 = (int32_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg6 = (faiss::IndexBinary::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryFromFloat_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFromFloat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFromFloat_search" "', argument " "1"" of type '" "faiss::IndexBinaryFromFloat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFromFloat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryFromFloat_search" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryFromFloat_search" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryFromFloat_search" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexBinary::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryFromFloat_search" "', argument " "5"" of type '" "int32_t *""'"); 
+  }
+  arg5 = reinterpret_cast< int32_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinaryFromFloat_search" "', argument " "6"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryFromFloat const *)arg1)->search(arg2,(uint8_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryFromFloat_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryFromFloat *arg1 = (faiss::IndexBinaryFromFloat *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryFromFloat_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryFromFloat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryFromFloat_train" "', argument " "1"" of type '" "faiss::IndexBinaryFromFloat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryFromFloat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryFromFloat_train" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryFromFloat_train" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexBinaryFromFloat_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexBinaryFromFloat, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexBinaryFromFloat_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHNSW_hnsw_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *arg1 = (faiss::IndexBinaryHNSW *) 0 ;
+  faiss::HNSW *arg2 = (faiss::HNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHNSW_hnsw_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHNSW_hnsw_set" "', argument " "1"" of type '" "faiss::IndexBinaryHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryHNSW_hnsw_set" "', argument " "2"" of type '" "faiss::HNSW *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HNSW * >(argp2);
+  if (arg1) (arg1)->hnsw = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHNSW_hnsw_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *arg1 = (faiss::IndexBinaryHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::HNSW *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHNSW_hnsw_get" "', argument " "1"" of type '" "faiss::IndexBinaryHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHNSW * >(argp1);
+  result = (faiss::HNSW *)& ((arg1)->hnsw);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HNSW, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHNSW_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *arg1 = (faiss::IndexBinaryHNSW *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHNSW_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHNSW_own_fields_set" "', argument " "1"" of type '" "faiss::IndexBinaryHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHNSW_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHNSW_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *arg1 = (faiss::IndexBinaryHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHNSW_own_fields_get" "', argument " "1"" of type '" "faiss::IndexBinaryHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHNSW * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHNSW_storage_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *arg1 = (faiss::IndexBinaryHNSW *) 0 ;
+  faiss::IndexBinary *arg2 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHNSW_storage_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHNSW_storage_set" "', argument " "1"" of type '" "faiss::IndexBinaryHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHNSW * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinary, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryHNSW_storage_set" "', argument " "2"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinary * >(argp2);
+  if (arg1) (arg1)->storage = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHNSW_storage_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *arg1 = (faiss::IndexBinaryHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IndexBinary *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHNSW_storage_get" "', argument " "1"" of type '" "faiss::IndexBinaryHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHNSW * >(argp1);
+  result = (faiss::IndexBinary *) ((arg1)->storage);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryHNSW__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryHNSW *)new faiss::IndexBinaryHNSW();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryHNSW, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryHNSW__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexBinaryHNSW *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryHNSW" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexBinaryHNSW" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryHNSW *)new faiss::IndexBinaryHNSW(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryHNSW, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryHNSW__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexBinaryHNSW *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryHNSW" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryHNSW *)new faiss::IndexBinaryHNSW(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryHNSW, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryHNSW__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexBinaryHNSW *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexBinaryHNSW" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexBinaryHNSW" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryHNSW *)new faiss::IndexBinaryHNSW(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryHNSW, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryHNSW__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexBinaryHNSW *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexBinaryHNSW" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryHNSW *)new faiss::IndexBinaryHNSW(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryHNSW, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryHNSW(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexBinaryHNSW", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexBinaryHNSW__SWIG_0(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinary, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexBinaryHNSW__SWIG_4(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexBinaryHNSW__SWIG_2(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinary, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexBinaryHNSW__SWIG_3(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexBinaryHNSW__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexBinaryHNSW'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexBinaryHNSW::IndexBinaryHNSW()\n"
+    "    faiss::IndexBinaryHNSW::IndexBinaryHNSW(int,int)\n"
+    "    faiss::IndexBinaryHNSW::IndexBinaryHNSW(int)\n"
+    "    faiss::IndexBinaryHNSW::IndexBinaryHNSW(faiss::IndexBinary *,int)\n"
+    "    faiss::IndexBinaryHNSW::IndexBinaryHNSW(faiss::IndexBinary *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexBinaryHNSW(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *arg1 = (faiss::IndexBinaryHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHNSW, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexBinaryHNSW" "', argument " "1"" of type '" "faiss::IndexBinaryHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHNSW * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHNSW_get_distance_computer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *arg1 = (faiss::IndexBinaryHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::DistanceComputer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHNSW_get_distance_computer" "', argument " "1"" of type '" "faiss::IndexBinaryHNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHNSW * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::DistanceComputer *)((faiss::IndexBinaryHNSW const *)arg1)->get_distance_computer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__DistanceComputer, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHNSW_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *arg1 = (faiss::IndexBinaryHNSW *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHNSW_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHNSW_add" "', argument " "1"" of type '" "faiss::IndexBinaryHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHNSW_add" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryHNSW_add" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHNSW_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *arg1 = (faiss::IndexBinaryHNSW *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHNSW_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHNSW_train" "', argument " "1"" of type '" "faiss::IndexBinaryHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHNSW_train" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryHNSW_train" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHNSW_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *arg1 = (faiss::IndexBinaryHNSW *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t arg4 ;
+  int32_t *arg5 = (int32_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg6 = (faiss::IndexBinary::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHNSW_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHNSW_search" "', argument " "1"" of type '" "faiss::IndexBinaryHNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHNSW_search" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryHNSW_search" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryHNSW_search" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexBinary::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryHNSW_search" "', argument " "5"" of type '" "int32_t *""'"); 
+  }
+  arg5 = reinterpret_cast< int32_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinaryHNSW_search" "', argument " "6"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryHNSW const *)arg1)->search(arg2,(uint8_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHNSW_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *arg1 = (faiss::IndexBinaryHNSW *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHNSW_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHNSW_reconstruct" "', argument " "1"" of type '" "faiss::IndexBinaryHNSW const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHNSW * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHNSW_reconstruct" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryHNSW_reconstruct" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryHNSW const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHNSW_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHNSW *arg1 = (faiss::IndexBinaryHNSW *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHNSW, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHNSW_reset" "', argument " "1"" of type '" "faiss::IndexBinaryHNSW *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHNSW * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexBinaryHNSW_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexBinaryHNSW, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexBinaryHNSW_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHash_invlists_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  faiss::IndexBinaryHash::InvertedListMap *arg2 = (faiss::IndexBinaryHash::InvertedListMap *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHash_invlists_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHash_invlists_set" "', argument " "1"" of type '" "faiss::IndexBinaryHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__unordered_mapT_long_faiss__IndexBinaryHash__InvertedList_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryHash_invlists_set" "', argument " "2"" of type '" "faiss::IndexBinaryHash::InvertedListMap *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinaryHash::InvertedListMap * >(argp2);
+  if (arg1) (arg1)->invlists = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHash_invlists_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IndexBinaryHash::InvertedListMap *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHash_invlists_get" "', argument " "1"" of type '" "faiss::IndexBinaryHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  result = (faiss::IndexBinaryHash::InvertedListMap *)& ((arg1)->invlists);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__unordered_mapT_long_faiss__IndexBinaryHash__InvertedList_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHash_b_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHash_b_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHash_b_set" "', argument " "1"" of type '" "faiss::IndexBinaryHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHash_b_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->b = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHash_b_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHash_b_get" "', argument " "1"" of type '" "faiss::IndexBinaryHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  result = (int) ((arg1)->b);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHash_nflip_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHash_nflip_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHash_nflip_set" "', argument " "1"" of type '" "faiss::IndexBinaryHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHash_nflip_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nflip = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHash_nflip_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHash_nflip_get" "', argument " "1"" of type '" "faiss::IndexBinaryHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  result = (int) ((arg1)->nflip);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryHash__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexBinaryHash *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryHash" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexBinaryHash" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryHash *)new faiss::IndexBinaryHash(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryHash, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryHash__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryHash *)new faiss::IndexBinaryHash();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryHash, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryHash(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexBinaryHash", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexBinaryHash__SWIG_1(self, argc, argv);
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexBinaryHash__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexBinaryHash'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexBinaryHash::IndexBinaryHash(int,int)\n"
+    "    faiss::IndexBinaryHash::IndexBinaryHash()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHash_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHash_reset" "', argument " "1"" of type '" "faiss::IndexBinaryHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHash_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHash_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHash_add" "', argument " "1"" of type '" "faiss::IndexBinaryHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHash_add" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryHash_add" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHash_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg4 = (faiss::IndexBinary::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHash_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHash_add_with_ids" "', argument " "1"" of type '" "faiss::IndexBinaryHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHash_add_with_ids" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryHash_add_with_ids" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexBinaryHash_add_with_ids" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(uint8_t const *)arg3,(faiss::IndexBinary::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHash_range_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  int arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHash_range_search", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHash_range_search" "', argument " "1"" of type '" "faiss::IndexBinaryHash const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHash_range_search" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryHash_range_search" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryHash_range_search" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryHash_range_search" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryHash const *)arg1)->range_search(arg2,(uint8_t const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHash_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t arg4 ;
+  int32_t *arg5 = (int32_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg6 = (faiss::IndexBinary::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHash_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHash_search" "', argument " "1"" of type '" "faiss::IndexBinaryHash const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHash_search" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryHash_search" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryHash_search" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexBinary::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryHash_search" "', argument " "5"" of type '" "int32_t *""'"); 
+  }
+  arg5 = reinterpret_cast< int32_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinaryHash_search" "', argument " "6"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryHash const *)arg1)->search(arg2,(uint8_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHash_display(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHash_display" "', argument " "1"" of type '" "faiss::IndexBinaryHash const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryHash const *)arg1)->display();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHash_hashtable_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHash_hashtable_size" "', argument " "1"" of type '" "faiss::IndexBinaryHash const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::IndexBinaryHash const *)arg1)->hashtable_size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexBinaryHash(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHash *arg1 = (faiss::IndexBinaryHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHash, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexBinaryHash" "', argument " "1"" of type '" "faiss::IndexBinaryHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHash * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexBinaryHash_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexBinaryHash, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexBinaryHash_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHashStats_nq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHashStats *arg1 = (faiss::IndexBinaryHashStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHashStats_nq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHashStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHashStats_nq_set" "', argument " "1"" of type '" "faiss::IndexBinaryHashStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHashStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHashStats_nq_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nq = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHashStats_nq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHashStats *arg1 = (faiss::IndexBinaryHashStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHashStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHashStats_nq_get" "', argument " "1"" of type '" "faiss::IndexBinaryHashStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHashStats * >(argp1);
+  result = (size_t) ((arg1)->nq);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHashStats_n0_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHashStats *arg1 = (faiss::IndexBinaryHashStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHashStats_n0_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHashStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHashStats_n0_set" "', argument " "1"" of type '" "faiss::IndexBinaryHashStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHashStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHashStats_n0_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->n0 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHashStats_n0_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHashStats *arg1 = (faiss::IndexBinaryHashStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHashStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHashStats_n0_get" "', argument " "1"" of type '" "faiss::IndexBinaryHashStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHashStats * >(argp1);
+  result = (size_t) ((arg1)->n0);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHashStats_nlist_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHashStats *arg1 = (faiss::IndexBinaryHashStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHashStats_nlist_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHashStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHashStats_nlist_set" "', argument " "1"" of type '" "faiss::IndexBinaryHashStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHashStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHashStats_nlist_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nlist = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHashStats_nlist_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHashStats *arg1 = (faiss::IndexBinaryHashStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHashStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHashStats_nlist_get" "', argument " "1"" of type '" "faiss::IndexBinaryHashStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHashStats * >(argp1);
+  result = (size_t) ((arg1)->nlist);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHashStats_ndis_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHashStats *arg1 = (faiss::IndexBinaryHashStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryHashStats_ndis_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHashStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHashStats_ndis_set" "', argument " "1"" of type '" "faiss::IndexBinaryHashStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHashStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryHashStats_ndis_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->ndis = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHashStats_ndis_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHashStats *arg1 = (faiss::IndexBinaryHashStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHashStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHashStats_ndis_get" "', argument " "1"" of type '" "faiss::IndexBinaryHashStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHashStats * >(argp1);
+  result = (size_t) ((arg1)->ndis);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryHashStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHashStats *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_IndexBinaryHashStats", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryHashStats *)new faiss::IndexBinaryHashStats();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryHashStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryHashStats_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHashStats *arg1 = (faiss::IndexBinaryHashStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHashStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryHashStats_reset" "', argument " "1"" of type '" "faiss::IndexBinaryHashStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHashStats * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexBinaryHashStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryHashStats *arg1 = (faiss::IndexBinaryHashStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryHashStats, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexBinaryHashStats" "', argument " "1"" of type '" "faiss::IndexBinaryHashStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryHashStats * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexBinaryHashStats_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexBinaryHashStats, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexBinaryHashStats_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN int Swig_var_indexBinaryHash_stats_set(PyObject *_val) {
+  {
+    void *argp = 0;
+    int res = SWIG_ConvertPtr(_val, &argp, SWIGTYPE_p_faiss__IndexBinaryHashStats,  0  | 0);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::indexBinaryHash_stats""' of type '""faiss::IndexBinaryHashStats""'");
+    }
+    if (!argp) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in variable '""faiss::indexBinaryHash_stats""' of type '""faiss::IndexBinaryHashStats""'");
+    } else {
+      faiss::IndexBinaryHashStats * temp;
+      temp  = reinterpret_cast< faiss::IndexBinaryHashStats * >(argp);
+      faiss::indexBinaryHash_stats = *temp;
+      if (SWIG_IsNewObj(res)) delete temp;
+    }
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_indexBinaryHash_stats_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_NewPointerObj(SWIG_as_voidptr(&faiss::indexBinaryHash_stats), SWIGTYPE_p_faiss__IndexBinaryHashStats,  0 );
+  return pyobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_storage_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  faiss::IndexBinaryFlat *arg2 = (faiss::IndexBinaryFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryMultiHash_storage_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_storage_set" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinaryFlat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryMultiHash_storage_set" "', argument " "2"" of type '" "faiss::IndexBinaryFlat *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp2);
+  if (arg1) (arg1)->storage = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_storage_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IndexBinaryFlat *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_storage_get" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  result = (faiss::IndexBinaryFlat *) ((arg1)->storage);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryMultiHash_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_own_fields_set" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryMultiHash_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_own_fields_get" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_maps_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  std::vector< faiss::IndexBinaryMultiHash::Map > *arg2 = (std::vector< faiss::IndexBinaryMultiHash::Map > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryMultiHash_maps_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_maps_set" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_std__unordered_mapT_long_std__vectorT_int64_t_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryMultiHash_maps_set" "', argument " "2"" of type '" "std::vector< faiss::IndexBinaryMultiHash::Map > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::IndexBinaryMultiHash::Map > * >(argp2);
+  if (arg1) (arg1)->maps = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_maps_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::IndexBinaryMultiHash::Map > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_maps_get" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  result = (std::vector< faiss::IndexBinaryMultiHash::Map > *)& ((arg1)->maps);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_std__unordered_mapT_long_std__vectorT_int64_t_t_t_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_nhash_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryMultiHash_nhash_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_nhash_set" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryMultiHash_nhash_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nhash = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_nhash_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_nhash_get" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  result = (int) ((arg1)->nhash);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_b_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryMultiHash_b_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_b_set" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryMultiHash_b_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->b = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_b_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_b_get" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  result = (int) ((arg1)->b);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_nflip_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryMultiHash_nflip_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_nflip_set" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryMultiHash_nflip_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nflip = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_nflip_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_nflip_get" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  result = (int) ((arg1)->nflip);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryMultiHash__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int arg2 ;
+  int arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexBinaryMultiHash *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryMultiHash" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexBinaryMultiHash" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexBinaryMultiHash" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryMultiHash *)new faiss::IndexBinaryMultiHash(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryMultiHash, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryMultiHash__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinaryMultiHash *)new faiss::IndexBinaryMultiHash();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinaryMultiHash, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryMultiHash(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexBinaryMultiHash", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexBinaryMultiHash__SWIG_1(self, argc, argv);
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexBinaryMultiHash__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexBinaryMultiHash'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexBinaryMultiHash::IndexBinaryMultiHash(int,int,int)\n"
+    "    faiss::IndexBinaryMultiHash::IndexBinaryMultiHash()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexBinaryMultiHash(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexBinaryMultiHash" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_reset" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryMultiHash_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_add" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryMultiHash_add" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryMultiHash_add" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_range_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  int arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryMultiHash_range_search", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_range_search" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryMultiHash_range_search" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryMultiHash_range_search" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryMultiHash_range_search" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryMultiHash_range_search" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryMultiHash const *)arg1)->range_search(arg2,(uint8_t const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t arg4 ;
+  int32_t *arg5 = (int32_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg6 = (faiss::IndexBinary::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryMultiHash_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_search" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryMultiHash_search" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryMultiHash_search" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryMultiHash_search" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexBinary::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryMultiHash_search" "', argument " "5"" of type '" "int32_t *""'"); 
+  }
+  arg5 = reinterpret_cast< int32_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinaryMultiHash_search" "', argument " "6"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexBinaryMultiHash const *)arg1)->search(arg2,(uint8_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryMultiHash_hashtable_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinaryMultiHash *arg1 = (faiss::IndexBinaryMultiHash *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinaryMultiHash, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryMultiHash_hashtable_size" "', argument " "1"" of type '" "faiss::IndexBinaryMultiHash const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinaryMultiHash * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::IndexBinaryMultiHash const *)arg1)->hashtable_size();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexBinaryMultiHash_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexBinaryMultiHash, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexBinaryMultiHash_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_delete_ThreadedIndexBase(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::Index > *arg1 = (faiss::ThreadedIndex< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ThreadedIndexBase" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::Index > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBase_addIndex(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::Index > *arg1 = (faiss::ThreadedIndex< faiss::Index > *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ThreadedIndexBase_addIndex", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBase_addIndex" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::Index > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ThreadedIndexBase_addIndex" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->addIndex(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBase_removeIndex(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::Index > *arg1 = (faiss::ThreadedIndex< faiss::Index > *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ThreadedIndexBase_removeIndex", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBase_removeIndex" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::Index > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ThreadedIndexBase_removeIndex" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->removeIndex(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBase_runOnIndex__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::Index > *arg1 = (faiss::ThreadedIndex< faiss::Index > *) 0 ;
+  SwigValueWrapper< std::function< void (int,faiss::Index *) > > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBase_runOnIndex" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::Index > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__functionT_void_fint_faiss__Index_pF_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ThreadedIndexBase_runOnIndex" "', argument " "2"" of type '" "std::function< void (int,faiss::Index *) >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "ThreadedIndexBase_runOnIndex" "', argument " "2"" of type '" "std::function< void (int,faiss::Index *) >""'");
+    } else {
+      std::function< void (int,faiss::Index *) > * temp = reinterpret_cast< std::function< void (int,faiss::Index *) > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->runOnIndex(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBase_runOnIndex__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::Index > *arg1 = (faiss::ThreadedIndex< faiss::Index > *) 0 ;
+  SwigValueWrapper< std::function< void (int,faiss::Index const *) > > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBase_runOnIndex" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::Index > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::Index > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__functionT_void_fint_faiss__Index_const_pF_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ThreadedIndexBase_runOnIndex" "', argument " "2"" of type '" "std::function< void (int,faiss::Index const *) >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "ThreadedIndexBase_runOnIndex" "', argument " "2"" of type '" "std::function< void (int,faiss::Index const *) >""'");
+    } else {
+      std::function< void (int,faiss::Index const *) > * temp = reinterpret_cast< std::function< void (int,faiss::Index const *) > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ThreadedIndex< faiss::Index > const *)arg1)->runOnIndex(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBase_runOnIndex(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ThreadedIndexBase_runOnIndex", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_std__functionT_void_fint_faiss__Index_pF_t, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_ThreadedIndexBase_runOnIndex__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_std__functionT_void_fint_faiss__Index_const_pF_t, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_ThreadedIndexBase_runOnIndex__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ThreadedIndexBase_runOnIndex'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ThreadedIndex< faiss::Index >::runOnIndex(std::function< void (int,faiss::Index *) >)\n"
+    "    faiss::ThreadedIndex< faiss::Index >::runOnIndex(std::function< void (int,faiss::Index const *) >) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBase_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::Index > *arg1 = (faiss::ThreadedIndex< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBase_reset" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::Index > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBase_count(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::Index > *arg1 = (faiss::ThreadedIndex< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBase_count" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::Index > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::Index > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::ThreadedIndex< faiss::Index > const *)arg1)->count();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBase_at__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::Index > *arg1 = (faiss::ThreadedIndex< faiss::Index > *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBase_at" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ThreadedIndexBase_at" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)(arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBase_at__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::Index > *arg1 = (faiss::ThreadedIndex< faiss::Index > *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBase_at" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::Index > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ThreadedIndexBase_at" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)((faiss::ThreadedIndex< faiss::Index > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBase_at(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ThreadedIndexBase_at", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_ThreadedIndexBase_at__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_ThreadedIndexBase_at__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ThreadedIndexBase_at'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ThreadedIndex< faiss::Index >::at(int)\n"
+    "    faiss::ThreadedIndex< faiss::Index >::at(int) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBase_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::Index > *arg1 = (faiss::ThreadedIndex< faiss::Index > *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ThreadedIndexBase_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBase_own_fields_set" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ThreadedIndexBase_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBase_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::Index > *arg1 = (faiss::ThreadedIndex< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBase_own_fields_get" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::Index > * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ThreadedIndexBase_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ThreadedIndexT_faiss__Index_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_delete_ThreadedIndexBaseBinary(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::IndexBinary > *arg1 = (faiss::ThreadedIndex< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ThreadedIndexBaseBinary" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::IndexBinary > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBaseBinary_addIndex(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::IndexBinary > *arg1 = (faiss::ThreadedIndex< faiss::IndexBinary > *) 0 ;
+  faiss::IndexBinary *arg2 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ThreadedIndexBaseBinary_addIndex", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBaseBinary_addIndex" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::IndexBinary > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ThreadedIndexBaseBinary_addIndex" "', argument " "2"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinary * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->addIndex(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBaseBinary_removeIndex(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::IndexBinary > *arg1 = (faiss::ThreadedIndex< faiss::IndexBinary > *) 0 ;
+  faiss::IndexBinary *arg2 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ThreadedIndexBaseBinary_removeIndex", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBaseBinary_removeIndex" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::IndexBinary > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ThreadedIndexBaseBinary_removeIndex" "', argument " "2"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinary * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->removeIndex(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBaseBinary_runOnIndex__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::IndexBinary > *arg1 = (faiss::ThreadedIndex< faiss::IndexBinary > *) 0 ;
+  SwigValueWrapper< std::function< void (int,faiss::IndexBinary *) > > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBaseBinary_runOnIndex" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::IndexBinary > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__functionT_void_fint_faiss__IndexBinary_pF_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ThreadedIndexBaseBinary_runOnIndex" "', argument " "2"" of type '" "std::function< void (int,faiss::IndexBinary *) >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "ThreadedIndexBaseBinary_runOnIndex" "', argument " "2"" of type '" "std::function< void (int,faiss::IndexBinary *) >""'");
+    } else {
+      std::function< void (int,faiss::IndexBinary *) > * temp = reinterpret_cast< std::function< void (int,faiss::IndexBinary *) > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->runOnIndex(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBaseBinary_runOnIndex__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::IndexBinary > *arg1 = (faiss::ThreadedIndex< faiss::IndexBinary > *) 0 ;
+  SwigValueWrapper< std::function< void (int,faiss::IndexBinary const *) > > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBaseBinary_runOnIndex" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::IndexBinary > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::IndexBinary > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__functionT_void_fint_faiss__IndexBinary_const_pF_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ThreadedIndexBaseBinary_runOnIndex" "', argument " "2"" of type '" "std::function< void (int,faiss::IndexBinary const *) >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "ThreadedIndexBaseBinary_runOnIndex" "', argument " "2"" of type '" "std::function< void (int,faiss::IndexBinary const *) >""'");
+    } else {
+      std::function< void (int,faiss::IndexBinary const *) > * temp = reinterpret_cast< std::function< void (int,faiss::IndexBinary const *) > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ThreadedIndex< faiss::IndexBinary > const *)arg1)->runOnIndex(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBaseBinary_runOnIndex(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ThreadedIndexBaseBinary_runOnIndex", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_std__functionT_void_fint_faiss__IndexBinary_pF_t, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_ThreadedIndexBaseBinary_runOnIndex__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_std__functionT_void_fint_faiss__IndexBinary_const_pF_t, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_ThreadedIndexBaseBinary_runOnIndex__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ThreadedIndexBaseBinary_runOnIndex'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ThreadedIndex< faiss::IndexBinary >::runOnIndex(std::function< void (int,faiss::IndexBinary *) >)\n"
+    "    faiss::ThreadedIndex< faiss::IndexBinary >::runOnIndex(std::function< void (int,faiss::IndexBinary const *) >) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBaseBinary_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::IndexBinary > *arg1 = (faiss::ThreadedIndex< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBaseBinary_reset" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::IndexBinary > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBaseBinary_count(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::IndexBinary > *arg1 = (faiss::ThreadedIndex< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBaseBinary_count" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::IndexBinary > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::IndexBinary > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::ThreadedIndex< faiss::IndexBinary > const *)arg1)->count();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBaseBinary_at__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::IndexBinary > *arg1 = (faiss::ThreadedIndex< faiss::IndexBinary > *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexBinary *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBaseBinary_at" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ThreadedIndexBaseBinary_at" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinary *)(arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBaseBinary_at__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::IndexBinary > *arg1 = (faiss::ThreadedIndex< faiss::IndexBinary > *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexBinary *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBaseBinary_at" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::IndexBinary > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ThreadedIndexBaseBinary_at" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinary *)((faiss::ThreadedIndex< faiss::IndexBinary > const *)arg1)->at(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBaseBinary_at(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ThreadedIndexBaseBinary_at", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_ThreadedIndexBaseBinary_at__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_ThreadedIndexBaseBinary_at__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ThreadedIndexBaseBinary_at'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ThreadedIndex< faiss::IndexBinary >::at(int)\n"
+    "    faiss::ThreadedIndex< faiss::IndexBinary >::at(int) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBaseBinary_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::IndexBinary > *arg1 = (faiss::ThreadedIndex< faiss::IndexBinary > *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ThreadedIndexBaseBinary_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBaseBinary_own_fields_set" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ThreadedIndexBaseBinary_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ThreadedIndexBaseBinary_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ThreadedIndex< faiss::IndexBinary > *arg1 = (faiss::ThreadedIndex< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ThreadedIndexBaseBinary_own_fields_get" "', argument " "1"" of type '" "faiss::ThreadedIndex< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ThreadedIndex< faiss::IndexBinary > * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ThreadedIndexBaseBinary_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexShards__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  bool arg1 ;
+  bool arg2 ;
+  bool val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexShardsTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_bool(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexShards" "', argument " "1"" of type '" "bool""'");
+  } 
+  arg1 = static_cast< bool >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexShards" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::Index > *)new faiss::IndexShardsTemplate< faiss::Index >(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexShards__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  bool arg1 ;
+  bool val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexShardsTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_bool(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexShards" "', argument " "1"" of type '" "bool""'");
+  } 
+  arg1 = static_cast< bool >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::Index > *)new faiss::IndexShardsTemplate< faiss::Index >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexShards__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::Index > *)new faiss::IndexShardsTemplate< faiss::Index >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexShards__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index >::idx_t arg1 ;
+  bool arg2 ;
+  bool arg3 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexShardsTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexShards" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::IndexShardsTemplate< faiss::Index >::idx_t >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexShards" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexShards" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::Index > *)new faiss::IndexShardsTemplate< faiss::Index >(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexShards__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index >::idx_t arg1 ;
+  bool arg2 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexShardsTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexShards" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::IndexShardsTemplate< faiss::Index >::idx_t >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexShards" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::Index > *)new faiss::IndexShardsTemplate< faiss::Index >(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexShards__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index >::idx_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexShardsTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexShards" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::IndexShardsTemplate< faiss::Index >::idx_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::Index > *)new faiss::IndexShardsTemplate< faiss::Index >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexShards__SWIG_6(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  bool arg2 ;
+  bool arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexShardsTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexShards" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexShards" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexShards" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::Index > *)new faiss::IndexShardsTemplate< faiss::Index >(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexShards__SWIG_7(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  bool arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexShardsTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexShards" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexShards" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::Index > *)new faiss::IndexShardsTemplate< faiss::Index >(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexShards__SWIG_8(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexShardsTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexShards" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::Index > *)new faiss::IndexShardsTemplate< faiss::Index >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexShards(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexShards", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexShards__SWIG_2(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_bool(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexShards__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexShards__SWIG_8(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexShards__SWIG_5(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_bool(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexShards__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexShards__SWIG_7(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexShards__SWIG_4(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexShards__SWIG_6(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexShards__SWIG_3(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexShards'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexShardsTemplate< faiss::Index >::IndexShardsTemplate(bool,bool)\n"
+    "    faiss::IndexShardsTemplate< faiss::Index >::IndexShardsTemplate(bool)\n"
+    "    faiss::IndexShardsTemplate< faiss::Index >::IndexShardsTemplate()\n"
+    "    faiss::IndexShardsTemplate< faiss::Index >::IndexShardsTemplate(faiss::IndexShardsTemplate< faiss::Index >::idx_t,bool,bool)\n"
+    "    faiss::IndexShardsTemplate< faiss::Index >::IndexShardsTemplate(faiss::IndexShardsTemplate< faiss::Index >::idx_t,bool)\n"
+    "    faiss::IndexShardsTemplate< faiss::Index >::IndexShardsTemplate(faiss::IndexShardsTemplate< faiss::Index >::idx_t)\n"
+    "    faiss::IndexShardsTemplate< faiss::Index >::IndexShardsTemplate(int,bool,bool)\n"
+    "    faiss::IndexShardsTemplate< faiss::Index >::IndexShardsTemplate(int,bool)\n"
+    "    faiss::IndexShardsTemplate< faiss::Index >::IndexShardsTemplate(int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexShards_add_shard(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index > *arg1 = (faiss::IndexShardsTemplate< faiss::Index > *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexShards_add_shard", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexShards_add_shard" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexShards_add_shard" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_shard(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexShards_remove_shard(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index > *arg1 = (faiss::IndexShardsTemplate< faiss::Index > *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexShards_remove_shard", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexShards_remove_shard" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexShards_remove_shard" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->remove_shard(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexShards_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index > *arg1 = (faiss::IndexShardsTemplate< faiss::Index > *) 0 ;
+  faiss::IndexShardsTemplate< faiss::Index >::idx_t arg2 ;
+  faiss::IndexShardsTemplate< faiss::Index >::component_t *arg3 = (faiss::IndexShardsTemplate< faiss::Index >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexShards_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexShards_add" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexShards_add" "', argument " "2"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexShardsTemplate< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexShards_add" "', argument " "3"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(faiss::IndexShardsTemplate< faiss::Index >::component_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexShards_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index > *arg1 = (faiss::IndexShardsTemplate< faiss::Index > *) 0 ;
+  faiss::IndexShardsTemplate< faiss::Index >::idx_t arg2 ;
+  faiss::IndexShardsTemplate< faiss::Index >::component_t *arg3 = (faiss::IndexShardsTemplate< faiss::Index >::component_t *) 0 ;
+  faiss::IndexShardsTemplate< faiss::Index >::idx_t *arg4 = (faiss::IndexShardsTemplate< faiss::Index >::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexShards_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexShards_add_with_ids" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexShards_add_with_ids" "', argument " "2"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexShardsTemplate< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexShards_add_with_ids" "', argument " "3"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index >::component_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexShards_add_with_ids" "', argument " "4"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index >::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(faiss::IndexShardsTemplate< faiss::Index >::component_t const *)arg3,(faiss::IndexShardsTemplate< faiss::Index >::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexShards_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index > *arg1 = (faiss::IndexShardsTemplate< faiss::Index > *) 0 ;
+  faiss::IndexShardsTemplate< faiss::Index >::idx_t arg2 ;
+  faiss::IndexShardsTemplate< faiss::Index >::component_t *arg3 = (faiss::IndexShardsTemplate< faiss::Index >::component_t *) 0 ;
+  faiss::IndexShardsTemplate< faiss::Index >::idx_t arg4 ;
+  faiss::IndexShardsTemplate< faiss::Index >::distance_t *arg5 = (faiss::IndexShardsTemplate< faiss::Index >::distance_t *) 0 ;
+  faiss::IndexShardsTemplate< faiss::Index >::idx_t *arg6 = (faiss::IndexShardsTemplate< faiss::Index >::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexShards_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexShards_search" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::Index > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexShards_search" "', argument " "2"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexShardsTemplate< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexShards_search" "', argument " "3"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index >::component_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexShards_search" "', argument " "4"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexShardsTemplate< faiss::Index >::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexShards_search" "', argument " "5"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::distance_t *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index >::distance_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexShards_search" "', argument " "6"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index >::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexShardsTemplate< faiss::Index > const *)arg1)->search(arg2,(faiss::IndexShardsTemplate< faiss::Index >::component_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexShards_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index > *arg1 = (faiss::IndexShardsTemplate< faiss::Index > *) 0 ;
+  faiss::IndexShardsTemplate< faiss::Index >::idx_t arg2 ;
+  faiss::IndexShardsTemplate< faiss::Index >::component_t *arg3 = (faiss::IndexShardsTemplate< faiss::Index >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexShards_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexShards_train" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexShards_train" "', argument " "2"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexShardsTemplate< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexShards_train" "', argument " "3"" of type '" "faiss::IndexShardsTemplate< faiss::Index >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(faiss::IndexShardsTemplate< faiss::Index >::component_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexShards_successive_ids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index > *arg1 = (faiss::IndexShardsTemplate< faiss::Index > *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexShards_successive_ids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexShards_successive_ids_set" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexShards_successive_ids_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->successive_ids = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexShards_successive_ids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index > *arg1 = (faiss::IndexShardsTemplate< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexShards_successive_ids_get" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index > * >(argp1);
+  result = (bool) ((arg1)->successive_ids);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexShards_syncWithSubIndexes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index > *arg1 = (faiss::IndexShardsTemplate< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexShards_syncWithSubIndexes" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->syncWithSubIndexes();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexShards(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::Index > *arg1 = (faiss::IndexShardsTemplate< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexShards" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::Index > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexShards_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexShards_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryShards__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  bool arg1 ;
+  bool arg2 ;
+  bool val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_bool(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryShards" "', argument " "1"" of type '" "bool""'");
+  } 
+  arg1 = static_cast< bool >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexBinaryShards" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::IndexBinary > *)new faiss::IndexShardsTemplate< faiss::IndexBinary >(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryShards__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  bool arg1 ;
+  bool val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_bool(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryShards" "', argument " "1"" of type '" "bool""'");
+  } 
+  arg1 = static_cast< bool >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::IndexBinary > *)new faiss::IndexShardsTemplate< faiss::IndexBinary >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryShards__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::IndexBinary > *)new faiss::IndexShardsTemplate< faiss::IndexBinary >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryShards__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t arg1 ;
+  bool arg2 ;
+  bool arg3 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryShards" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexBinaryShards" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexBinaryShards" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::IndexBinary > *)new faiss::IndexShardsTemplate< faiss::IndexBinary >(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryShards__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t arg1 ;
+  bool arg2 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryShards" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexBinaryShards" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::IndexBinary > *)new faiss::IndexShardsTemplate< faiss::IndexBinary >(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryShards__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryShards" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::IndexBinary > *)new faiss::IndexShardsTemplate< faiss::IndexBinary >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryShards__SWIG_6(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  bool arg2 ;
+  bool arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryShards" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexBinaryShards" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_IndexBinaryShards" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::IndexBinary > *)new faiss::IndexShardsTemplate< faiss::IndexBinary >(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryShards__SWIG_7(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  bool arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryShards" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexBinaryShards" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::IndexBinary > *)new faiss::IndexShardsTemplate< faiss::IndexBinary >(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryShards__SWIG_8(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryShards" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexShardsTemplate< faiss::IndexBinary > *)new faiss::IndexShardsTemplate< faiss::IndexBinary >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryShards(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexBinaryShards", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexBinaryShards__SWIG_2(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_bool(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexBinaryShards__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexBinaryShards__SWIG_8(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexBinaryShards__SWIG_5(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_bool(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexBinaryShards__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexBinaryShards__SWIG_7(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexBinaryShards__SWIG_4(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexBinaryShards__SWIG_6(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_IndexBinaryShards__SWIG_3(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexBinaryShards'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexShardsTemplate< faiss::IndexBinary >::IndexShardsTemplate(bool,bool)\n"
+    "    faiss::IndexShardsTemplate< faiss::IndexBinary >::IndexShardsTemplate(bool)\n"
+    "    faiss::IndexShardsTemplate< faiss::IndexBinary >::IndexShardsTemplate()\n"
+    "    faiss::IndexShardsTemplate< faiss::IndexBinary >::IndexShardsTemplate(faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t,bool,bool)\n"
+    "    faiss::IndexShardsTemplate< faiss::IndexBinary >::IndexShardsTemplate(faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t,bool)\n"
+    "    faiss::IndexShardsTemplate< faiss::IndexBinary >::IndexShardsTemplate(faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t)\n"
+    "    faiss::IndexShardsTemplate< faiss::IndexBinary >::IndexShardsTemplate(int,bool,bool)\n"
+    "    faiss::IndexShardsTemplate< faiss::IndexBinary >::IndexShardsTemplate(int,bool)\n"
+    "    faiss::IndexShardsTemplate< faiss::IndexBinary >::IndexShardsTemplate(int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryShards_add_shard(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexShardsTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexBinary *arg2 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryShards_add_shard", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryShards_add_shard" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryShards_add_shard" "', argument " "2"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinary * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_shard(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryShards_remove_shard(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexShardsTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexBinary *arg2 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryShards_remove_shard", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryShards_remove_shard" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryShards_remove_shard" "', argument " "2"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinary * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->remove_shard(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryShards_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexShardsTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryShards_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryShards_add" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryShards_add" "', argument " "2"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryShards_add" "', argument " "3"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryShards_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexShardsTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t *) 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t *arg4 = (faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryShards_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryShards_add_with_ids" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryShards_add_with_ids" "', argument " "2"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryShards_add_with_ids" "', argument " "3"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexBinaryShards_add_with_ids" "', argument " "4"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t const *)arg3,(faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryShards_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexShardsTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t *) 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t arg4 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::distance_t *arg5 = (faiss::IndexShardsTemplate< faiss::IndexBinary >::distance_t *) 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t *arg6 = (faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryShards_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryShards_search" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryShards_search" "', argument " "2"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryShards_search" "', argument " "3"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryShards_search" "', argument " "4"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryShards_search" "', argument " "5"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::distance_t *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::distance_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinaryShards_search" "', argument " "6"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexShardsTemplate< faiss::IndexBinary > const *)arg1)->search(arg2,(faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryShards_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexShardsTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryShards_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryShards_train" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryShards_train" "', argument " "2"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryShards_train" "', argument " "3"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryShards_successive_ids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexShardsTemplate< faiss::IndexBinary > *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryShards_successive_ids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryShards_successive_ids_set" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryShards_successive_ids_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->successive_ids = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryShards_successive_ids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexShardsTemplate< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryShards_successive_ids_get" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary > * >(argp1);
+  result = (bool) ((arg1)->successive_ids);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryShards_syncWithSubIndexes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexShardsTemplate< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryShards_syncWithSubIndexes" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->syncWithSubIndexes();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexBinaryShards(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexShardsTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexShardsTemplate< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexBinaryShards" "', argument " "1"" of type '" "faiss::IndexShardsTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexShardsTemplate< faiss::IndexBinary > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexBinaryShards_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexBinaryShards_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexReplicas__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  bool arg1 ;
+  bool val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexReplicasTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_bool(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexReplicas" "', argument " "1"" of type '" "bool""'");
+  } 
+  arg1 = static_cast< bool >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexReplicasTemplate< faiss::Index > *)new faiss::IndexReplicasTemplate< faiss::Index >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexReplicas__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexReplicasTemplate< faiss::Index > *)new faiss::IndexReplicasTemplate< faiss::Index >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexReplicas__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::Index >::idx_t arg1 ;
+  bool arg2 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexReplicasTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexReplicas" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::IndexReplicasTemplate< faiss::Index >::idx_t >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexReplicas" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexReplicasTemplate< faiss::Index > *)new faiss::IndexReplicasTemplate< faiss::Index >(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexReplicas__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::Index >::idx_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexReplicasTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexReplicas" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::IndexReplicasTemplate< faiss::Index >::idx_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexReplicasTemplate< faiss::Index > *)new faiss::IndexReplicasTemplate< faiss::Index >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexReplicas__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  bool arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexReplicasTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexReplicas" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexReplicas" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexReplicasTemplate< faiss::Index > *)new faiss::IndexReplicasTemplate< faiss::Index >(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexReplicas__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexReplicasTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexReplicas" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexReplicasTemplate< faiss::Index > *)new faiss::IndexReplicasTemplate< faiss::Index >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexReplicas(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexReplicas", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexReplicas__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_bool(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexReplicas__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexReplicas__SWIG_5(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexReplicas__SWIG_3(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexReplicas__SWIG_4(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexReplicas__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexReplicas'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexReplicasTemplate< faiss::Index >::IndexReplicasTemplate(bool)\n"
+    "    faiss::IndexReplicasTemplate< faiss::Index >::IndexReplicasTemplate()\n"
+    "    faiss::IndexReplicasTemplate< faiss::Index >::IndexReplicasTemplate(faiss::IndexReplicasTemplate< faiss::Index >::idx_t,bool)\n"
+    "    faiss::IndexReplicasTemplate< faiss::Index >::IndexReplicasTemplate(faiss::IndexReplicasTemplate< faiss::Index >::idx_t)\n"
+    "    faiss::IndexReplicasTemplate< faiss::Index >::IndexReplicasTemplate(int,bool)\n"
+    "    faiss::IndexReplicasTemplate< faiss::Index >::IndexReplicasTemplate(int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexReplicas_add_replica(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::Index > *arg1 = (faiss::IndexReplicasTemplate< faiss::Index > *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexReplicas_add_replica", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexReplicas_add_replica" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexReplicas_add_replica" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_replica(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexReplicas_remove_replica(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::Index > *arg1 = (faiss::IndexReplicasTemplate< faiss::Index > *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexReplicas_remove_replica", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexReplicas_remove_replica" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexReplicas_remove_replica" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->remove_replica(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexReplicas_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::Index > *arg1 = (faiss::IndexReplicasTemplate< faiss::Index > *) 0 ;
+  faiss::IndexReplicasTemplate< faiss::Index >::idx_t arg2 ;
+  faiss::IndexReplicasTemplate< faiss::Index >::component_t *arg3 = (faiss::IndexReplicasTemplate< faiss::Index >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexReplicas_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexReplicas_train" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexReplicas_train" "', argument " "2"" of type '" "faiss::IndexReplicasTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexReplicasTemplate< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexReplicas_train" "', argument " "3"" of type '" "faiss::IndexReplicasTemplate< faiss::Index >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(faiss::IndexReplicasTemplate< faiss::Index >::component_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexReplicas_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::Index > *arg1 = (faiss::IndexReplicasTemplate< faiss::Index > *) 0 ;
+  faiss::IndexReplicasTemplate< faiss::Index >::idx_t arg2 ;
+  faiss::IndexReplicasTemplate< faiss::Index >::component_t *arg3 = (faiss::IndexReplicasTemplate< faiss::Index >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexReplicas_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexReplicas_add" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexReplicas_add" "', argument " "2"" of type '" "faiss::IndexReplicasTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexReplicasTemplate< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexReplicas_add" "', argument " "3"" of type '" "faiss::IndexReplicasTemplate< faiss::Index >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(faiss::IndexReplicasTemplate< faiss::Index >::component_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexReplicas_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::Index > *arg1 = (faiss::IndexReplicasTemplate< faiss::Index > *) 0 ;
+  faiss::IndexReplicasTemplate< faiss::Index >::idx_t arg2 ;
+  faiss::IndexReplicasTemplate< faiss::Index >::component_t *arg3 = (faiss::IndexReplicasTemplate< faiss::Index >::component_t *) 0 ;
+  faiss::IndexReplicasTemplate< faiss::Index >::idx_t arg4 ;
+  faiss::IndexReplicasTemplate< faiss::Index >::distance_t *arg5 = (faiss::IndexReplicasTemplate< faiss::Index >::distance_t *) 0 ;
+  faiss::IndexReplicasTemplate< faiss::Index >::idx_t *arg6 = (faiss::IndexReplicasTemplate< faiss::Index >::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexReplicas_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexReplicas_search" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::Index > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexReplicas_search" "', argument " "2"" of type '" "faiss::IndexReplicasTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexReplicasTemplate< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexReplicas_search" "', argument " "3"" of type '" "faiss::IndexReplicasTemplate< faiss::Index >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index >::component_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexReplicas_search" "', argument " "4"" of type '" "faiss::IndexReplicasTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexReplicasTemplate< faiss::Index >::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexReplicas_search" "', argument " "5"" of type '" "faiss::IndexReplicasTemplate< faiss::Index >::distance_t *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index >::distance_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexReplicas_search" "', argument " "6"" of type '" "faiss::IndexReplicasTemplate< faiss::Index >::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index >::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexReplicasTemplate< faiss::Index > const *)arg1)->search(arg2,(faiss::IndexReplicasTemplate< faiss::Index >::component_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexReplicas_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::Index > *arg1 = (faiss::IndexReplicasTemplate< faiss::Index > *) 0 ;
+  faiss::IndexReplicasTemplate< faiss::Index >::idx_t arg2 ;
+  faiss::IndexReplicasTemplate< faiss::Index >::component_t *arg3 = (faiss::IndexReplicasTemplate< faiss::Index >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexReplicas_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexReplicas_reconstruct" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::Index > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexReplicas_reconstruct" "', argument " "2"" of type '" "faiss::IndexReplicasTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexReplicasTemplate< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexReplicas_reconstruct" "', argument " "3"" of type '" "faiss::IndexReplicasTemplate< faiss::Index >::component_t *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexReplicasTemplate< faiss::Index > const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexReplicas_syncWithSubIndexes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::Index > *arg1 = (faiss::IndexReplicasTemplate< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexReplicas_syncWithSubIndexes" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->syncWithSubIndexes();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexReplicas(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::Index > *arg1 = (faiss::IndexReplicasTemplate< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexReplicas" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::Index > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexReplicas_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexReplicas_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryReplicas__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  bool arg1 ;
+  bool val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_bool(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryReplicas" "', argument " "1"" of type '" "bool""'");
+  } 
+  arg1 = static_cast< bool >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *)new faiss::IndexReplicasTemplate< faiss::IndexBinary >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryReplicas__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *)new faiss::IndexReplicasTemplate< faiss::IndexBinary >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryReplicas__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t arg1 ;
+  bool arg2 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryReplicas" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexBinaryReplicas" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *)new faiss::IndexReplicasTemplate< faiss::IndexBinary >(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryReplicas__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryReplicas" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *)new faiss::IndexReplicasTemplate< faiss::IndexBinary >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryReplicas__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  bool arg2 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryReplicas" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexBinaryReplicas" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *)new faiss::IndexReplicasTemplate< faiss::IndexBinary >(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryReplicas__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexBinaryReplicas" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *)new faiss::IndexReplicasTemplate< faiss::IndexBinary >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryReplicas(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexBinaryReplicas", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexBinaryReplicas__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_bool(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexBinaryReplicas__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexBinaryReplicas__SWIG_5(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexBinaryReplicas__SWIG_3(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexBinaryReplicas__SWIG_4(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexBinaryReplicas__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexBinaryReplicas'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexReplicasTemplate< faiss::IndexBinary >::IndexReplicasTemplate(bool)\n"
+    "    faiss::IndexReplicasTemplate< faiss::IndexBinary >::IndexReplicasTemplate()\n"
+    "    faiss::IndexReplicasTemplate< faiss::IndexBinary >::IndexReplicasTemplate(faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t,bool)\n"
+    "    faiss::IndexReplicasTemplate< faiss::IndexBinary >::IndexReplicasTemplate(faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t)\n"
+    "    faiss::IndexReplicasTemplate< faiss::IndexBinary >::IndexReplicasTemplate(int,bool)\n"
+    "    faiss::IndexReplicasTemplate< faiss::IndexBinary >::IndexReplicasTemplate(int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryReplicas_add_replica(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexBinary *arg2 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryReplicas_add_replica", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryReplicas_add_replica" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryReplicas_add_replica" "', argument " "2"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinary * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_replica(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryReplicas_remove_replica(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexBinary *arg2 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryReplicas_remove_replica", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryReplicas_remove_replica" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryReplicas_remove_replica" "', argument " "2"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinary * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->remove_replica(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryReplicas_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryReplicas_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryReplicas_train" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryReplicas_train" "', argument " "2"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryReplicas_train" "', argument " "3"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryReplicas_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryReplicas_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryReplicas_add" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryReplicas_add" "', argument " "2"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryReplicas_add" "', argument " "3"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryReplicas_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t *) 0 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t arg4 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary >::distance_t *arg5 = (faiss::IndexReplicasTemplate< faiss::IndexBinary >::distance_t *) 0 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t *arg6 = (faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryReplicas_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryReplicas_search" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryReplicas_search" "', argument " "2"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryReplicas_search" "', argument " "3"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryReplicas_search" "', argument " "4"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryReplicas_search" "', argument " "5"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary >::distance_t *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary >::distance_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinaryReplicas_search" "', argument " "6"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexReplicasTemplate< faiss::IndexBinary > const *)arg1)->search(arg2,(faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryReplicas_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryReplicas_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryReplicas_reconstruct" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryReplicas_reconstruct" "', argument " "2"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryReplicas_reconstruct" "', argument " "3"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexReplicasTemplate< faiss::IndexBinary > const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryReplicas_syncWithSubIndexes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryReplicas_syncWithSubIndexes" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->syncWithSubIndexes();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexBinaryReplicas(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexReplicasTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexReplicasTemplate< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexBinaryReplicas" "', argument " "1"" of type '" "faiss::IndexReplicasTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexReplicasTemplate< faiss::IndexBinary > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexBinaryReplicas_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexBinaryReplicas_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexSplitVectors_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_own_fields_set" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexSplitVectors_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_own_fields_get" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_threaded_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexSplitVectors_threaded_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_threaded_set" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexSplitVectors_threaded_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->threaded = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_threaded_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_threaded_get" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  result = (bool) ((arg1)->threaded);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_sub_indexes_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  std::vector< faiss::Index * > *arg2 = (std::vector< faiss::Index * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexSplitVectors_sub_indexes_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_sub_indexes_set" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__Index_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexSplitVectors_sub_indexes_set" "', argument " "2"" of type '" "std::vector< faiss::Index * > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::Index * > * >(argp2);
+  if (arg1) (arg1)->sub_indexes = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_sub_indexes_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::Index * > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_sub_indexes_get" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  result = (std::vector< faiss::Index * > *)& ((arg1)->sub_indexes);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__Index_p_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_sum_d_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexSplitVectors_sum_d_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_sum_d_set" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexSplitVectors_sum_d_set" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  if (arg1) (arg1)->sum_d = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_sum_d_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_sum_d_get" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  result = (faiss::Index::idx_t) ((arg1)->sum_d);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexSplitVectors__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  bool arg2 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexSplitVectors *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexSplitVectors" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IndexSplitVectors" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexSplitVectors *)new faiss::IndexSplitVectors(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexSplitVectors, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexSplitVectors__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index::idx_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  faiss::IndexSplitVectors *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IndexSplitVectors" "', argument " "1"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::Index::idx_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexSplitVectors *)new faiss::IndexSplitVectors(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexSplitVectors, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexSplitVectors(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexSplitVectors", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_IndexSplitVectors__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_IndexSplitVectors__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexSplitVectors'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexSplitVectors::IndexSplitVectors(faiss::Index::idx_t,bool)\n"
+    "    faiss::IndexSplitVectors::IndexSplitVectors(faiss::Index::idx_t)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_add_sub_index(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexSplitVectors_add_sub_index", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_add_sub_index" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexSplitVectors_add_sub_index" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_sub_index(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_sync_with_sub_indexes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_sync_with_sub_indexes" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->sync_with_sub_indexes();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexSplitVectors_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_add" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexSplitVectors_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexSplitVectors_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexSplitVectors_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_search" "', argument " "1"" of type '" "faiss::IndexSplitVectors const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexSplitVectors_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexSplitVectors_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexSplitVectors_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexSplitVectors_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexSplitVectors_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexSplitVectors const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexSplitVectors_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_train" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexSplitVectors_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexSplitVectors_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexSplitVectors_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexSplitVectors_reset" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexSplitVectors(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexSplitVectors *arg1 = (faiss::IndexSplitVectors *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexSplitVectors, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexSplitVectors" "', argument " "1"" of type '" "faiss::IndexSplitVectors *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexSplitVectors * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IndexSplitVectors_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexSplitVectors, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexSplitVectors_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexIDMap_index_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIDMap_index_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap_index_set" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIDMap_index_set" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  if (arg1) (arg1)->index = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap_index_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap_index_get" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  result = (faiss::Index *) ((arg1)->index);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Index, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIDMap_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap_own_fields_set" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIDMap_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap_own_fields_get" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap_id_map_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  std::vector< faiss::IndexIDMapTemplate< faiss::Index >::idx_t > *arg2 = (std::vector< faiss::IndexIDMapTemplate< faiss::Index >::idx_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIDMap_id_map_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap_id_map_set" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIDMap_id_map_set" "', argument " "2"" of type '" "std::vector< faiss::IndexIDMapTemplate< faiss::Index >::idx_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::IndexIDMapTemplate< faiss::Index >::idx_t > * >(argp2);
+  if (arg1) (arg1)->id_map = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap_id_map_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::IndexIDMapTemplate< faiss::Index >::idx_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap_id_map_get" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  result = (std::vector< faiss::IndexIDMapTemplate< faiss::Index >::idx_t > *)& ((arg1)->id_map);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIDMap__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexIDMapTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIDMap" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIDMapTemplate< faiss::Index > *)new faiss::IndexIDMapTemplate< faiss::Index >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::idx_t arg2 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::component_t *arg3 = (faiss::IndexIDMapTemplate< faiss::Index >::component_t *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::idx_t *arg4 = (faiss::IndexIDMapTemplate< faiss::Index >::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIDMap_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap_add_with_ids" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIDMap_add_with_ids" "', argument " "2"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMapTemplate< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIDMap_add_with_ids" "', argument " "3"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index >::component_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIDMap_add_with_ids" "', argument " "4"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index >::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(faiss::IndexIDMapTemplate< faiss::Index >::component_t const *)arg3,(faiss::IndexIDMapTemplate< faiss::Index >::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::idx_t arg2 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::component_t *arg3 = (faiss::IndexIDMapTemplate< faiss::Index >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIDMap_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap_add" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIDMap_add" "', argument " "2"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMapTemplate< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIDMap_add" "', argument " "3"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(faiss::IndexIDMapTemplate< faiss::Index >::component_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::idx_t arg2 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::component_t *arg3 = (faiss::IndexIDMapTemplate< faiss::Index >::component_t *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::idx_t arg4 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::distance_t *arg5 = (faiss::IndexIDMapTemplate< faiss::Index >::distance_t *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::idx_t *arg6 = (faiss::IndexIDMapTemplate< faiss::Index >::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIDMap_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap_search" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIDMap_search" "', argument " "2"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMapTemplate< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIDMap_search" "', argument " "3"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index >::component_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIDMap_search" "', argument " "4"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexIDMapTemplate< faiss::Index >::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIDMap_search" "', argument " "5"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::distance_t *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index >::distance_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexIDMap_search" "', argument " "6"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index >::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIDMapTemplate< faiss::Index > const *)arg1)->search(arg2,(faiss::IndexIDMapTemplate< faiss::Index >::component_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::idx_t arg2 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::component_t *arg3 = (faiss::IndexIDMapTemplate< faiss::Index >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIDMap_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap_train" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIDMap_train" "', argument " "2"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMapTemplate< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIDMap_train" "', argument " "3"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(faiss::IndexIDMapTemplate< faiss::Index >::component_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap_reset" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIDMap_remove_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap_remove_ids" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIDMap_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIDMap_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap_range_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::idx_t arg2 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::component_t *arg3 = (faiss::IndexIDMapTemplate< faiss::Index >::component_t *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::Index >::distance_t arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  float val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIDMap_range_search", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap_range_search" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIDMap_range_search" "', argument " "2"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMapTemplate< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIDMap_range_search" "', argument " "3"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index >::component_t * >(argp3);
+  ecode4 = SWIG_AsVal_float(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexIDMap_range_search" "', argument " "4"" of type '" "faiss::IndexIDMapTemplate< faiss::Index >::distance_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexIDMapTemplate< faiss::Index >::distance_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexIDMap_range_search" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIDMapTemplate< faiss::Index > const *)arg1)->range_search(arg2,(faiss::IndexIDMapTemplate< faiss::Index >::component_t const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIDMap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *arg1 = (faiss::IndexIDMapTemplate< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIDMap" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::Index > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIDMap__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIDMapTemplate< faiss::Index > *)new faiss::IndexIDMapTemplate< faiss::Index >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIDMap(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexIDMap", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexIDMap__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexIDMap__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexIDMap'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIDMapTemplate< faiss::Index >::IndexIDMapTemplate(faiss::Index *)\n"
+    "    faiss::IndexIDMapTemplate< faiss::Index >::IndexIDMapTemplate()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *IndexIDMap_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIDMap_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap_index_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexBinary *arg2 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIDMap_index_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap_index_set" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinary, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIDMap_index_set" "', argument " "2"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinary * >(argp2);
+  if (arg1) (arg1)->index = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap_index_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IndexBinary *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap_index_get" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  result = (faiss::IndexBinary *) ((arg1)->index);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap_own_fields_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIDMap_own_fields_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap_own_fields_set" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIDMap_own_fields_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->own_fields = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap_own_fields_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap_own_fields_get" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  result = (bool) ((arg1)->own_fields);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap_id_map_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  std::vector< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t > *arg2 = (std::vector< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIDMap_id_map_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap_id_map_set" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIDMap_id_map_set" "', argument " "2"" of type '" "std::vector< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t > * >(argp2);
+  if (arg1) (arg1)->id_map = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap_id_map_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap_id_map_get" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  result = (std::vector< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t > *)& ((arg1)->id_map);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryIDMap__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexBinaryIDMap" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *)new faiss::IndexIDMapTemplate< faiss::IndexBinary >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t *arg4 = (faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIDMap_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap_add_with_ids" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIDMap_add_with_ids" "', argument " "2"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIDMap_add_with_ids" "', argument " "3"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexBinaryIDMap_add_with_ids" "', argument " "4"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t const *)arg3,(faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIDMap_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap_add" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIDMap_add" "', argument " "2"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIDMap_add" "', argument " "3"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t arg4 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::distance_t *arg5 = (faiss::IndexIDMapTemplate< faiss::IndexBinary >::distance_t *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t *arg6 = (faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIDMap_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap_search" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIDMap_search" "', argument " "2"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIDMap_search" "', argument " "3"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryIDMap_search" "', argument " "4"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryIDMap_search" "', argument " "5"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::distance_t *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::distance_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "IndexBinaryIDMap_search" "', argument " "6"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIDMapTemplate< faiss::IndexBinary > const *)arg1)->search(arg2,(faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIDMap_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap_train" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIDMap_train" "', argument " "2"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIDMap_train" "', argument " "3"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap_reset" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIDMap_remove_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap_remove_ids" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIDMap_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexBinaryIDMap_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap_range_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t *) 0 ;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary >::distance_t arg4 ;
+  faiss::RangeSearchResult *arg5 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIDMap_range_search", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap_range_search" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIDMap_range_search" "', argument " "2"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIDMap_range_search" "', argument " "3"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t * >(argp3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "IndexBinaryIDMap_range_search" "', argument " "4"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary >::distance_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary >::distance_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "IndexBinaryIDMap_range_search" "', argument " "5"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::RangeSearchResult * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIDMapTemplate< faiss::IndexBinary > const *)arg1)->range_search(arg2,(faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexBinaryIDMap(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *arg1 = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexBinaryIDMap" "', argument " "1"" of type '" "faiss::IndexIDMapTemplate< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMapTemplate< faiss::IndexBinary > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryIDMap__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMapTemplate< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIDMapTemplate< faiss::IndexBinary > *)new faiss::IndexIDMapTemplate< faiss::IndexBinary >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryIDMap(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexBinaryIDMap", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexBinaryIDMap__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinary, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexBinaryIDMap__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexBinaryIDMap'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIDMapTemplate< faiss::IndexBinary >::IndexIDMapTemplate(faiss::IndexBinary *)\n"
+    "    faiss::IndexIDMapTemplate< faiss::IndexBinary >::IndexIDMapTemplate()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *IndexBinaryIDMap_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexBinaryIDMap_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexIDMap2_rev_map_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::Index > *arg1 = (faiss::IndexIDMap2Template< faiss::Index > *) 0 ;
+  std::unordered_map< faiss::IndexIDMap2Template< faiss::Index >::idx_t,faiss::IndexIDMap2Template< faiss::Index >::idx_t > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIDMap2_rev_map_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap2_rev_map_set" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::Index > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__unordered_mapT_long_long_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIDMap2_rev_map_set" "', argument " "2"" of type '" "std::unordered_map< faiss::IndexIDMap2Template< faiss::Index >::idx_t,faiss::IndexIDMap2Template< faiss::Index >::idx_t >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIDMap2_rev_map_set" "', argument " "2"" of type '" "std::unordered_map< faiss::IndexIDMap2Template< faiss::Index >::idx_t,faiss::IndexIDMap2Template< faiss::Index >::idx_t >""'");
+    } else {
+      std::unordered_map< faiss::IndexIDMap2Template< faiss::Index >::idx_t,faiss::IndexIDMap2Template< faiss::Index >::idx_t > * temp = reinterpret_cast< std::unordered_map< faiss::IndexIDMap2Template< faiss::Index >::idx_t,faiss::IndexIDMap2Template< faiss::Index >::idx_t > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  if (arg1) (arg1)->rev_map = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap2_rev_map_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::Index > *arg1 = (faiss::IndexIDMap2Template< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::unordered_map< faiss::IndexIDMap2Template< faiss::Index >::idx_t,faiss::IndexIDMap2Template< faiss::Index >::idx_t > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap2_rev_map_get" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::Index > * >(argp1);
+  result =  ((arg1)->rev_map);
+  resultobj = SWIG_NewPointerObj((new std::unordered_map< faiss::IndexIDMap2Template< faiss::Index >::idx_t,faiss::IndexIDMap2Template< faiss::Index >::idx_t >(static_cast< const std::unordered_map< faiss::IndexIDMap2Template< faiss::Index >::idx_t,faiss::IndexIDMap2Template< faiss::Index >::idx_t >& >(result))), SWIGTYPE_p_std__unordered_mapT_long_long_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIDMap2__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexIDMap2Template< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexIDMap2" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIDMap2Template< faiss::Index > *)new faiss::IndexIDMap2Template< faiss::Index >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap2_construct_rev_map(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::Index > *arg1 = (faiss::IndexIDMap2Template< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap2_construct_rev_map" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::Index > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->construct_rev_map();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap2_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::Index > *arg1 = (faiss::IndexIDMap2Template< faiss::Index > *) 0 ;
+  faiss::IndexIDMap2Template< faiss::Index >::idx_t arg2 ;
+  faiss::IndexIDMap2Template< faiss::Index >::component_t *arg3 = (faiss::IndexIDMap2Template< faiss::Index >::component_t *) 0 ;
+  faiss::IndexIDMap2Template< faiss::Index >::idx_t *arg4 = (faiss::IndexIDMap2Template< faiss::Index >::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIDMap2_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap2_add_with_ids" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIDMap2_add_with_ids" "', argument " "2"" of type '" "faiss::IndexIDMap2Template< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMap2Template< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIDMap2_add_with_ids" "', argument " "3"" of type '" "faiss::IndexIDMap2Template< faiss::Index >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::Index >::component_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexIDMap2_add_with_ids" "', argument " "4"" of type '" "faiss::IndexIDMap2Template< faiss::Index >::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::Index >::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(faiss::IndexIDMap2Template< faiss::Index >::component_t const *)arg3,(faiss::IndexIDMap2Template< faiss::Index >::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap2_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::Index > *arg1 = (faiss::IndexIDMap2Template< faiss::Index > *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIDMap2_remove_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap2_remove_ids" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::Index > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexIDMap2_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexIDMap2_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexIDMap2_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::Index > *arg1 = (faiss::IndexIDMap2Template< faiss::Index > *) 0 ;
+  faiss::IndexIDMap2Template< faiss::Index >::idx_t arg2 ;
+  faiss::IndexIDMap2Template< faiss::Index >::component_t *arg3 = (faiss::IndexIDMap2Template< faiss::Index >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexIDMap2_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexIDMap2_reconstruct" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::Index > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::Index > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexIDMap2_reconstruct" "', argument " "2"" of type '" "faiss::IndexIDMap2Template< faiss::Index >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMap2Template< faiss::Index >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexIDMap2_reconstruct" "', argument " "3"" of type '" "faiss::IndexIDMap2Template< faiss::Index >::component_t *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::Index >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIDMap2Template< faiss::Index > const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexIDMap2(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::Index > *arg1 = (faiss::IndexIDMap2Template< faiss::Index > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexIDMap2" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::Index > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::Index > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIDMap2__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::Index > *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIDMap2Template< faiss::Index > *)new faiss::IndexIDMap2Template< faiss::Index >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexIDMap2(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexIDMap2", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexIDMap2__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexIDMap2__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexIDMap2'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIDMap2Template< faiss::Index >::IndexIDMap2Template(faiss::Index *)\n"
+    "    faiss::IndexIDMap2Template< faiss::Index >::IndexIDMap2Template()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *IndexIDMap2_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexIDMap2_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap2_rev_map_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::IndexBinary > *arg1 = (faiss::IndexIDMap2Template< faiss::IndexBinary > *) 0 ;
+  std::unordered_map< faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t,faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIDMap2_rev_map_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap2_rev_map_set" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::IndexBinary > * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__unordered_mapT_long_long_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIDMap2_rev_map_set" "', argument " "2"" of type '" "std::unordered_map< faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t,faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexBinaryIDMap2_rev_map_set" "', argument " "2"" of type '" "std::unordered_map< faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t,faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t >""'");
+    } else {
+      std::unordered_map< faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t,faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t > * temp = reinterpret_cast< std::unordered_map< faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t,faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  if (arg1) (arg1)->rev_map = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap2_rev_map_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::IndexBinary > *arg1 = (faiss::IndexIDMap2Template< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::unordered_map< faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t,faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap2_rev_map_get" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::IndexBinary > * >(argp1);
+  result =  ((arg1)->rev_map);
+  resultobj = SWIG_NewPointerObj((new std::unordered_map< faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t,faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t >(static_cast< const std::unordered_map< faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t,faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t >& >(result))), SWIGTYPE_p_std__unordered_mapT_long_long_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryIDMap2__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexIDMap2Template< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_IndexBinaryIDMap2" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIDMap2Template< faiss::IndexBinary > *)new faiss::IndexIDMap2Template< faiss::IndexBinary >(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap2_construct_rev_map(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::IndexBinary > *arg1 = (faiss::IndexIDMap2Template< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap2_construct_rev_map" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::IndexBinary > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->construct_rev_map();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap2_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::IndexBinary > *arg1 = (faiss::IndexIDMap2Template< faiss::IndexBinary > *) 0 ;
+  faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexIDMap2Template< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexIDMap2Template< faiss::IndexBinary >::component_t *) 0 ;
+  faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t *arg4 = (faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIDMap2_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap2_add_with_ids" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIDMap2_add_with_ids" "', argument " "2"" of type '" "faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIDMap2_add_with_ids" "', argument " "3"" of type '" "faiss::IndexIDMap2Template< faiss::IndexBinary >::component_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::IndexBinary >::component_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "IndexBinaryIDMap2_add_with_ids" "', argument " "4"" of type '" "faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(faiss::IndexIDMap2Template< faiss::IndexBinary >::component_t const *)arg3,(faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap2_remove_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::IndexBinary > *arg1 = (faiss::IndexIDMap2Template< faiss::IndexBinary > *) 0 ;
+  faiss::IDSelector *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIDMap2_remove_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap2_remove_ids" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::IndexBinary > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__IDSelector,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IndexBinaryIDMap2_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "IndexBinaryIDMap2_remove_ids" "', argument " "2"" of type '" "faiss::IDSelector const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->remove_ids((faiss::IDSelector const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IndexBinaryIDMap2_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::IndexBinary > *arg1 = (faiss::IndexIDMap2Template< faiss::IndexBinary > *) 0 ;
+  faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t arg2 ;
+  faiss::IndexIDMap2Template< faiss::IndexBinary >::component_t *arg3 = (faiss::IndexIDMap2Template< faiss::IndexBinary >::component_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IndexBinaryIDMap2_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IndexBinaryIDMap2_reconstruct" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::IndexBinary > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::IndexBinary > * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IndexBinaryIDMap2_reconstruct" "', argument " "2"" of type '" "faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IndexBinaryIDMap2_reconstruct" "', argument " "3"" of type '" "faiss::IndexIDMap2Template< faiss::IndexBinary >::component_t *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::IndexBinary >::component_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::IndexIDMap2Template< faiss::IndexBinary > const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IndexBinaryIDMap2(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::IndexBinary > *arg1 = (faiss::IndexIDMap2Template< faiss::IndexBinary > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IndexBinaryIDMap2" "', argument " "1"" of type '" "faiss::IndexIDMap2Template< faiss::IndexBinary > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexIDMap2Template< faiss::IndexBinary > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryIDMap2__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::IndexIDMap2Template< faiss::IndexBinary > *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIDMap2Template< faiss::IndexBinary > *)new faiss::IndexIDMap2Template< faiss::IndexBinary >();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IndexBinaryIDMap2(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_IndexBinaryIDMap2", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_IndexBinaryIDMap2__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinary, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_new_IndexBinaryIDMap2__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_IndexBinaryIDMap2'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::IndexIDMap2Template< faiss::IndexBinary >::IndexIDMap2Template(faiss::IndexBinary *)\n"
+    "    faiss::IndexIDMap2Template< faiss::IndexBinary >::IndexIDMap2Template()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *IndexBinaryIDMap2_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IndexBinaryIDMap2_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_RangeSearchResult_nq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult *arg1 = (faiss::RangeSearchResult *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RangeSearchResult_nq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchResult_nq_set" "', argument " "1"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchResult * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RangeSearchResult_nq_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nq = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchResult_nq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult *arg1 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchResult_nq_get" "', argument " "1"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchResult * >(argp1);
+  result = (size_t) ((arg1)->nq);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchResult_lims_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult *arg1 = (faiss::RangeSearchResult *) 0 ;
+  size_t *arg2 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RangeSearchResult_lims_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchResult_lims_set" "', argument " "1"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchResult * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_unsigned_long, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "RangeSearchResult_lims_set" "', argument " "2"" of type '" "size_t *""'"); 
+  }
+  arg2 = reinterpret_cast< size_t * >(argp2);
+  if (arg1) (arg1)->lims = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchResult_lims_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult *arg1 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchResult_lims_get" "', argument " "1"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchResult * >(argp1);
+  result = (size_t *) ((arg1)->lims);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchResult_labels_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult *arg1 = (faiss::RangeSearchResult *) 0 ;
+  faiss::RangeSearchResult::idx_t *arg2 = (faiss::RangeSearchResult::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RangeSearchResult_labels_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchResult_labels_set" "', argument " "1"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchResult * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "RangeSearchResult_labels_set" "', argument " "2"" of type '" "faiss::RangeSearchResult::idx_t *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::RangeSearchResult::idx_t * >(argp2);
+  if (arg1) (arg1)->labels = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchResult_labels_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult *arg1 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::RangeSearchResult::idx_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchResult_labels_get" "', argument " "1"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchResult * >(argp1);
+  result = (faiss::RangeSearchResult::idx_t *) ((arg1)->labels);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchResult_distances_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult *arg1 = (faiss::RangeSearchResult *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RangeSearchResult_distances_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchResult_distances_set" "', argument " "1"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchResult * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "RangeSearchResult_distances_set" "', argument " "2"" of type '" "float *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  if (arg1) (arg1)->distances = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchResult_distances_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult *arg1 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchResult_distances_get" "', argument " "1"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchResult * >(argp1);
+  result = (float *) ((arg1)->distances);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchResult_buffer_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult *arg1 = (faiss::RangeSearchResult *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RangeSearchResult_buffer_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchResult_buffer_size_set" "', argument " "1"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchResult * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RangeSearchResult_buffer_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->buffer_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchResult_buffer_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult *arg1 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchResult_buffer_size_get" "', argument " "1"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchResult * >(argp1);
+  result = (size_t) ((arg1)->buffer_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RangeSearchResult__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult::idx_t arg1 ;
+  bool arg2 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  faiss::RangeSearchResult *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_RangeSearchResult" "', argument " "1"" of type '" "faiss::RangeSearchResult::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::RangeSearchResult::idx_t >(val1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_RangeSearchResult" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::RangeSearchResult *)new faiss::RangeSearchResult(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RangeSearchResult, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RangeSearchResult__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult::idx_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  faiss::RangeSearchResult *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_RangeSearchResult" "', argument " "1"" of type '" "faiss::RangeSearchResult::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::RangeSearchResult::idx_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::RangeSearchResult *)new faiss::RangeSearchResult(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RangeSearchResult, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RangeSearchResult(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_RangeSearchResult", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_RangeSearchResult__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_long(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_RangeSearchResult__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_RangeSearchResult'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::RangeSearchResult::RangeSearchResult(faiss::RangeSearchResult::idx_t,bool)\n"
+    "    faiss::RangeSearchResult::RangeSearchResult(faiss::RangeSearchResult::idx_t)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchResult_do_allocation(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult *arg1 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchResult_do_allocation" "', argument " "1"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchResult * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->do_allocation();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_RangeSearchResult(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult *arg1 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchResult, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_RangeSearchResult" "', argument " "1"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchResult * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *RangeSearchResult_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__RangeSearchResult, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *RangeSearchResult_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IDSelector_is_member(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelector *arg1 = (faiss::IDSelector *) 0 ;
+  faiss::IDSelector::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  bool result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IDSelector_is_member", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelector, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelector_is_member" "', argument " "1"" of type '" "faiss::IDSelector const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelector * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IDSelector_is_member" "', argument " "2"" of type '" "faiss::IDSelector::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IDSelector::idx_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)((faiss::IDSelector const *)arg1)->is_member(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IDSelector(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelector *arg1 = (faiss::IDSelector *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelector, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IDSelector" "', argument " "1"" of type '" "faiss::IDSelector *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelector * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IDSelector_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IDSelector, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_IDSelectorRange_imin_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorRange *arg1 = (faiss::IDSelectorRange *) 0 ;
+  faiss::IDSelector::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IDSelectorRange_imin_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorRange, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorRange_imin_set" "', argument " "1"" of type '" "faiss::IDSelectorRange *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorRange * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IDSelectorRange_imin_set" "', argument " "2"" of type '" "faiss::IDSelector::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IDSelector::idx_t >(val2);
+  if (arg1) (arg1)->imin = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IDSelectorRange_imin_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorRange *arg1 = (faiss::IDSelectorRange *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IDSelector::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorRange, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorRange_imin_get" "', argument " "1"" of type '" "faiss::IDSelectorRange *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorRange * >(argp1);
+  result = (faiss::IDSelector::idx_t) ((arg1)->imin);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IDSelectorRange_imax_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorRange *arg1 = (faiss::IDSelectorRange *) 0 ;
+  faiss::IDSelector::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IDSelectorRange_imax_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorRange, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorRange_imax_set" "', argument " "1"" of type '" "faiss::IDSelectorRange *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorRange * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IDSelectorRange_imax_set" "', argument " "2"" of type '" "faiss::IDSelector::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IDSelector::idx_t >(val2);
+  if (arg1) (arg1)->imax = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IDSelectorRange_imax_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorRange *arg1 = (faiss::IDSelectorRange *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IDSelector::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorRange, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorRange_imax_get" "', argument " "1"" of type '" "faiss::IDSelectorRange *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorRange * >(argp1);
+  result = (faiss::IDSelector::idx_t) ((arg1)->imax);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IDSelectorRange(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelector::idx_t arg1 ;
+  faiss::IDSelector::idx_t arg2 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::IDSelectorRange *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_IDSelectorRange", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IDSelectorRange" "', argument " "1"" of type '" "faiss::IDSelector::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::IDSelector::idx_t >(val1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IDSelectorRange" "', argument " "2"" of type '" "faiss::IDSelector::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IDSelector::idx_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IDSelectorRange *)new faiss::IDSelectorRange(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IDSelectorRange, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IDSelectorRange_is_member(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorRange *arg1 = (faiss::IDSelectorRange *) 0 ;
+  faiss::IDSelector::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  bool result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IDSelectorRange_is_member", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorRange, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorRange_is_member" "', argument " "1"" of type '" "faiss::IDSelectorRange const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorRange * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IDSelectorRange_is_member" "', argument " "2"" of type '" "faiss::IDSelector::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IDSelector::idx_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)((faiss::IDSelectorRange const *)arg1)->is_member(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IDSelectorRange(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorRange *arg1 = (faiss::IDSelectorRange *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorRange, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IDSelectorRange" "', argument " "1"" of type '" "faiss::IDSelectorRange *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorRange * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IDSelectorRange_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IDSelectorRange, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IDSelectorRange_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IDSelectorArray_n_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorArray *arg1 = (faiss::IDSelectorArray *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IDSelectorArray_n_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorArray, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorArray_n_set" "', argument " "1"" of type '" "faiss::IDSelectorArray *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorArray * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IDSelectorArray_n_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->n = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IDSelectorArray_n_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorArray *arg1 = (faiss::IDSelectorArray *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorArray, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorArray_n_get" "', argument " "1"" of type '" "faiss::IDSelectorArray *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorArray * >(argp1);
+  result = (size_t) ((arg1)->n);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IDSelectorArray_ids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorArray *arg1 = (faiss::IDSelectorArray *) 0 ;
+  faiss::IDSelector::idx_t *arg2 = (faiss::IDSelector::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IDSelectorArray_ids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorArray, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorArray_ids_set" "', argument " "1"" of type '" "faiss::IDSelectorArray *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorArray * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IDSelectorArray_ids_set" "', argument " "2"" of type '" "faiss::IDSelector::idx_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector::idx_t * >(argp2);
+  if (arg1) (arg1)->ids = (faiss::IDSelector::idx_t const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IDSelectorArray_ids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorArray *arg1 = (faiss::IDSelectorArray *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IDSelector::idx_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorArray, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorArray_ids_get" "', argument " "1"" of type '" "faiss::IDSelectorArray *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorArray * >(argp1);
+  result = (faiss::IDSelector::idx_t *) ((arg1)->ids);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IDSelectorArray(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  faiss::IDSelector::idx_t *arg2 = (faiss::IDSelector::idx_t *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::IDSelectorArray *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_IDSelectorArray", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IDSelectorArray" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_IDSelectorArray" "', argument " "2"" of type '" "faiss::IDSelector::idx_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector::idx_t * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IDSelectorArray *)new faiss::IDSelectorArray(arg1,(faiss::IDSelector::idx_t const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IDSelectorArray, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IDSelectorArray_is_member(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorArray *arg1 = (faiss::IDSelectorArray *) 0 ;
+  faiss::IDSelector::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  bool result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IDSelectorArray_is_member", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorArray, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorArray_is_member" "', argument " "1"" of type '" "faiss::IDSelectorArray const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorArray * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IDSelectorArray_is_member" "', argument " "2"" of type '" "faiss::IDSelector::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IDSelector::idx_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)((faiss::IDSelectorArray const *)arg1)->is_member(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IDSelectorArray(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorArray *arg1 = (faiss::IDSelectorArray *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorArray, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IDSelectorArray" "', argument " "1"" of type '" "faiss::IDSelectorArray *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorArray * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IDSelectorArray_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IDSelectorArray, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IDSelectorArray_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IDSelectorBatch_nbits_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorBatch *arg1 = (faiss::IDSelectorBatch *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IDSelectorBatch_nbits_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorBatch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorBatch_nbits_set" "', argument " "1"" of type '" "faiss::IDSelectorBatch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorBatch * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IDSelectorBatch_nbits_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nbits = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IDSelectorBatch_nbits_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorBatch *arg1 = (faiss::IDSelectorBatch *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorBatch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorBatch_nbits_get" "', argument " "1"" of type '" "faiss::IDSelectorBatch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorBatch * >(argp1);
+  result = (int) ((arg1)->nbits);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IDSelectorBatch_mask_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorBatch *arg1 = (faiss::IDSelectorBatch *) 0 ;
+  faiss::IDSelector::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IDSelectorBatch_mask_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorBatch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorBatch_mask_set" "', argument " "1"" of type '" "faiss::IDSelectorBatch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorBatch * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IDSelectorBatch_mask_set" "', argument " "2"" of type '" "faiss::IDSelector::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IDSelector::idx_t >(val2);
+  if (arg1) (arg1)->mask = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IDSelectorBatch_mask_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorBatch *arg1 = (faiss::IDSelectorBatch *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IDSelector::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorBatch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorBatch_mask_get" "', argument " "1"" of type '" "faiss::IDSelectorBatch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorBatch * >(argp1);
+  result = (faiss::IDSelector::idx_t) ((arg1)->mask);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IDSelectorBatch(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  faiss::IDSelector::idx_t *arg2 = (faiss::IDSelector::idx_t *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::IDSelectorBatch *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_IDSelectorBatch", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IDSelectorBatch" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_IDSelectorBatch" "', argument " "2"" of type '" "faiss::IDSelector::idx_t const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IDSelector::idx_t * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IDSelectorBatch *)new faiss::IDSelectorBatch(arg1,(faiss::IDSelector::idx_t const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IDSelectorBatch, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IDSelectorBatch_is_member(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorBatch *arg1 = (faiss::IDSelectorBatch *) 0 ;
+  faiss::IDSelector::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  bool result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IDSelectorBatch_is_member", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorBatch, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IDSelectorBatch_is_member" "', argument " "1"" of type '" "faiss::IDSelectorBatch const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorBatch * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IDSelectorBatch_is_member" "', argument " "2"" of type '" "faiss::IDSelector::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IDSelector::idx_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)((faiss::IDSelectorBatch const *)arg1)->is_member(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IDSelectorBatch(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IDSelectorBatch *arg1 = (faiss::IDSelectorBatch *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IDSelectorBatch, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IDSelectorBatch" "', argument " "1"" of type '" "faiss::IDSelectorBatch *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IDSelectorBatch * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IDSelectorBatch_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IDSelectorBatch, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IDSelectorBatch_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_BufferList_buffer_size_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferList *arg1 = (faiss::BufferList *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferList_buffer_size_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferList_buffer_size_set" "', argument " "1"" of type '" "faiss::BufferList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferList * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BufferList_buffer_size_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->buffer_size = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferList_buffer_size_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferList *arg1 = (faiss::BufferList *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferList_buffer_size_get" "', argument " "1"" of type '" "faiss::BufferList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferList * >(argp1);
+  result = (size_t) ((arg1)->buffer_size);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferList_buffers_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferList *arg1 = (faiss::BufferList *) 0 ;
+  std::vector< faiss::BufferList::Buffer > *arg2 = (std::vector< faiss::BufferList::Buffer > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferList_buffers_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferList_buffers_set" "', argument " "1"" of type '" "faiss::BufferList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferList * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__BufferList__Buffer_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "BufferList_buffers_set" "', argument " "2"" of type '" "std::vector< faiss::BufferList::Buffer > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::BufferList::Buffer > * >(argp2);
+  if (arg1) (arg1)->buffers = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferList_buffers_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferList *arg1 = (faiss::BufferList *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::BufferList::Buffer > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferList_buffers_get" "', argument " "1"" of type '" "faiss::BufferList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferList * >(argp1);
+  result = (std::vector< faiss::BufferList::Buffer > *)& ((arg1)->buffers);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__BufferList__Buffer_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferList_wp_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferList *arg1 = (faiss::BufferList *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferList_wp_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferList_wp_set" "', argument " "1"" of type '" "faiss::BufferList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferList * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BufferList_wp_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->wp = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferList_wp_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferList *arg1 = (faiss::BufferList *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferList_wp_get" "', argument " "1"" of type '" "faiss::BufferList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferList * >(argp1);
+  result = (size_t) ((arg1)->wp);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_BufferList(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::BufferList *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_BufferList" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::BufferList *)new faiss::BufferList(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__BufferList, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_BufferList(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferList *arg1 = (faiss::BufferList *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferList, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_BufferList" "', argument " "1"" of type '" "faiss::BufferList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferList * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferList_append_buffer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferList *arg1 = (faiss::BufferList *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferList_append_buffer" "', argument " "1"" of type '" "faiss::BufferList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferList * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->append_buffer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferList_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferList *arg1 = (faiss::BufferList *) 0 ;
+  faiss::BufferList::idx_t arg2 ;
+  float arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  float val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferList_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferList_add" "', argument " "1"" of type '" "faiss::BufferList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferList * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BufferList_add" "', argument " "2"" of type '" "faiss::BufferList::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::BufferList::idx_t >(val2);
+  ecode3 = SWIG_AsVal_float(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "BufferList_add" "', argument " "3"" of type '" "float""'");
+  } 
+  arg3 = static_cast< float >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_BufferList_copy_range(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::BufferList *arg1 = (faiss::BufferList *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  faiss::BufferList::idx_t *arg4 = (faiss::BufferList::idx_t *) 0 ;
+  float *arg5 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "BufferList_copy_range", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__BufferList, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "BufferList_copy_range" "', argument " "1"" of type '" "faiss::BufferList *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::BufferList * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "BufferList_copy_range" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "BufferList_copy_range" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "BufferList_copy_range" "', argument " "4"" of type '" "faiss::BufferList::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::BufferList::idx_t * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "BufferList_copy_range" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copy_range(arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *BufferList_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__BufferList, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *BufferList_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_RangeQueryResult_qno_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeQueryResult *arg1 = (faiss::RangeQueryResult *) 0 ;
+  faiss::RangeQueryResult::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RangeQueryResult_qno_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeQueryResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeQueryResult_qno_set" "', argument " "1"" of type '" "faiss::RangeQueryResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeQueryResult * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RangeQueryResult_qno_set" "', argument " "2"" of type '" "faiss::RangeQueryResult::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::RangeQueryResult::idx_t >(val2);
+  if (arg1) (arg1)->qno = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeQueryResult_qno_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeQueryResult *arg1 = (faiss::RangeQueryResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::RangeQueryResult::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeQueryResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeQueryResult_qno_get" "', argument " "1"" of type '" "faiss::RangeQueryResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeQueryResult * >(argp1);
+  result = (faiss::RangeQueryResult::idx_t) ((arg1)->qno);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeQueryResult_nres_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeQueryResult *arg1 = (faiss::RangeQueryResult *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RangeQueryResult_nres_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeQueryResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeQueryResult_nres_set" "', argument " "1"" of type '" "faiss::RangeQueryResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeQueryResult * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RangeQueryResult_nres_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nres = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeQueryResult_nres_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeQueryResult *arg1 = (faiss::RangeQueryResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeQueryResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeQueryResult_nres_get" "', argument " "1"" of type '" "faiss::RangeQueryResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeQueryResult * >(argp1);
+  result = (size_t) ((arg1)->nres);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeQueryResult_pres_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeQueryResult *arg1 = (faiss::RangeQueryResult *) 0 ;
+  faiss::RangeSearchPartialResult *arg2 = (faiss::RangeSearchPartialResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RangeQueryResult_pres_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeQueryResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeQueryResult_pres_set" "', argument " "1"" of type '" "faiss::RangeQueryResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeQueryResult * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__RangeSearchPartialResult, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "RangeQueryResult_pres_set" "', argument " "2"" of type '" "faiss::RangeSearchPartialResult *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::RangeSearchPartialResult * >(argp2);
+  if (arg1) (arg1)->pres = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeQueryResult_pres_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeQueryResult *arg1 = (faiss::RangeQueryResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::RangeSearchPartialResult *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeQueryResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeQueryResult_pres_get" "', argument " "1"" of type '" "faiss::RangeQueryResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeQueryResult * >(argp1);
+  result = (faiss::RangeSearchPartialResult *) ((arg1)->pres);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RangeSearchPartialResult, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeQueryResult_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeQueryResult *arg1 = (faiss::RangeQueryResult *) 0 ;
+  float arg2 ;
+  faiss::RangeQueryResult::idx_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RangeQueryResult_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeQueryResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeQueryResult_add" "', argument " "1"" of type '" "faiss::RangeQueryResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeQueryResult * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RangeQueryResult_add" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "RangeQueryResult_add" "', argument " "3"" of type '" "faiss::RangeQueryResult::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::RangeQueryResult::idx_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RangeQueryResult(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeQueryResult *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_RangeQueryResult", 0, 0, 0)) SWIG_fail;
+  result = (faiss::RangeQueryResult *)new faiss::RangeQueryResult();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RangeQueryResult, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_RangeQueryResult(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeQueryResult *arg1 = (faiss::RangeQueryResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeQueryResult, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_RangeQueryResult" "', argument " "1"" of type '" "faiss::RangeQueryResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeQueryResult * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *RangeQueryResult_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__RangeQueryResult, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *RangeQueryResult_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_RangeSearchPartialResult_res_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchPartialResult *arg1 = (faiss::RangeSearchPartialResult *) 0 ;
+  faiss::RangeSearchResult *arg2 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RangeSearchPartialResult_res_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchPartialResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchPartialResult_res_set" "', argument " "1"" of type '" "faiss::RangeSearchPartialResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchPartialResult * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__RangeSearchResult, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "RangeSearchPartialResult_res_set" "', argument " "2"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::RangeSearchResult * >(argp2);
+  if (arg1) (arg1)->res = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchPartialResult_res_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchPartialResult *arg1 = (faiss::RangeSearchPartialResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::RangeSearchResult *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchPartialResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchPartialResult_res_get" "', argument " "1"" of type '" "faiss::RangeSearchPartialResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchPartialResult * >(argp1);
+  result = (faiss::RangeSearchResult *) ((arg1)->res);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_RangeSearchPartialResult(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchResult *arg1 = (faiss::RangeSearchResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::RangeSearchPartialResult *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_RangeSearchPartialResult" "', argument " "1"" of type '" "faiss::RangeSearchResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchResult * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::RangeSearchPartialResult *)new faiss::RangeSearchPartialResult(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RangeSearchPartialResult, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchPartialResult_queries_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchPartialResult *arg1 = (faiss::RangeSearchPartialResult *) 0 ;
+  std::vector< faiss::RangeQueryResult > *arg2 = (std::vector< faiss::RangeQueryResult > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RangeSearchPartialResult_queries_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchPartialResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchPartialResult_queries_set" "', argument " "1"" of type '" "faiss::RangeSearchPartialResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchPartialResult * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__RangeQueryResult_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "RangeSearchPartialResult_queries_set" "', argument " "2"" of type '" "std::vector< faiss::RangeQueryResult > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::RangeQueryResult > * >(argp2);
+  if (arg1) (arg1)->queries = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchPartialResult_queries_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchPartialResult *arg1 = (faiss::RangeSearchPartialResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::RangeQueryResult > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchPartialResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchPartialResult_queries_get" "', argument " "1"" of type '" "faiss::RangeSearchPartialResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchPartialResult * >(argp1);
+  result = (std::vector< faiss::RangeQueryResult > *)& ((arg1)->queries);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__RangeQueryResult_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchPartialResult_new_result(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchPartialResult *arg1 = (faiss::RangeSearchPartialResult *) 0 ;
+  faiss::BufferList::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::RangeQueryResult *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "RangeSearchPartialResult_new_result", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchPartialResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchPartialResult_new_result" "', argument " "1"" of type '" "faiss::RangeSearchPartialResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchPartialResult * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RangeSearchPartialResult_new_result" "', argument " "2"" of type '" "faiss::BufferList::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::BufferList::idx_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::RangeQueryResult *) &(arg1)->new_result(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__RangeQueryResult, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchPartialResult_finalize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchPartialResult *arg1 = (faiss::RangeSearchPartialResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchPartialResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchPartialResult_finalize" "', argument " "1"" of type '" "faiss::RangeSearchPartialResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchPartialResult * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->finalize();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchPartialResult_set_lims(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchPartialResult *arg1 = (faiss::RangeSearchPartialResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchPartialResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchPartialResult_set_lims" "', argument " "1"" of type '" "faiss::RangeSearchPartialResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchPartialResult * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_lims();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchPartialResult_copy_result__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchPartialResult *arg1 = (faiss::RangeSearchPartialResult *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchPartialResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchPartialResult_copy_result" "', argument " "1"" of type '" "faiss::RangeSearchPartialResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchPartialResult * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RangeSearchPartialResult_copy_result" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copy_result(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchPartialResult_copy_result__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchPartialResult *arg1 = (faiss::RangeSearchPartialResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchPartialResult, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchPartialResult_copy_result" "', argument " "1"" of type '" "faiss::RangeSearchPartialResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchPartialResult * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copy_result();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchPartialResult_copy_result(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "RangeSearchPartialResult_copy_result", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__RangeSearchPartialResult, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_RangeSearchPartialResult_copy_result__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__RangeSearchPartialResult, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_RangeSearchPartialResult_copy_result__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'RangeSearchPartialResult_copy_result'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::RangeSearchPartialResult::copy_result(bool)\n"
+    "    faiss::RangeSearchPartialResult::copy_result()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchPartialResult_merge__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::RangeSearchPartialResult * > *arg1 = 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_std__vectorT_faiss__RangeSearchPartialResult_p_t,  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchPartialResult_merge" "', argument " "1"" of type '" "std::vector< faiss::RangeSearchPartialResult * > &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "RangeSearchPartialResult_merge" "', argument " "1"" of type '" "std::vector< faiss::RangeSearchPartialResult * > &""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::RangeSearchPartialResult * > * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "RangeSearchPartialResult_merge" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::RangeSearchPartialResult::merge(*arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchPartialResult_merge__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::RangeSearchPartialResult * > *arg1 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_std__vectorT_faiss__RangeSearchPartialResult_p_t,  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "RangeSearchPartialResult_merge" "', argument " "1"" of type '" "std::vector< faiss::RangeSearchPartialResult * > &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "RangeSearchPartialResult_merge" "', argument " "1"" of type '" "std::vector< faiss::RangeSearchPartialResult * > &""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::RangeSearchPartialResult * > * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::RangeSearchPartialResult::merge(*arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_RangeSearchPartialResult_merge(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "RangeSearchPartialResult_merge", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_std__vectorT_faiss__RangeSearchPartialResult_p_t, SWIG_POINTER_NO_NULL);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_RangeSearchPartialResult_merge__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_std__vectorT_faiss__RangeSearchPartialResult_p_t, SWIG_POINTER_NO_NULL);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_RangeSearchPartialResult_merge__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'RangeSearchPartialResult_merge'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::RangeSearchPartialResult::merge(std::vector< faiss::RangeSearchPartialResult * > &,bool)\n"
+    "    faiss::RangeSearchPartialResult::merge(std::vector< faiss::RangeSearchPartialResult * > &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_RangeSearchPartialResult(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::RangeSearchPartialResult *arg1 = (faiss::RangeSearchPartialResult *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__RangeSearchPartialResult, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_RangeSearchPartialResult" "', argument " "1"" of type '" "faiss::RangeSearchPartialResult *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::RangeSearchPartialResult * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *RangeSearchPartialResult_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__RangeSearchPartialResult, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *RangeSearchPartialResult_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_DistanceComputer_set_query(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DistanceComputer *arg1 = (faiss::DistanceComputer *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DistanceComputer_set_query", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DistanceComputer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DistanceComputer_set_query" "', argument " "1"" of type '" "faiss::DistanceComputer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DistanceComputer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "DistanceComputer_set_query" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_query((float const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DistanceComputer___call__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DistanceComputer *arg1 = (faiss::DistanceComputer *) 0 ;
+  faiss::DistanceComputer::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  float result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DistanceComputer___call__", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DistanceComputer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DistanceComputer___call__" "', argument " "1"" of type '" "faiss::DistanceComputer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DistanceComputer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "DistanceComputer___call__" "', argument " "2"" of type '" "faiss::DistanceComputer::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::DistanceComputer::idx_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)(arg1)->operator ()(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_DistanceComputer_symmetric_dis(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DistanceComputer *arg1 = (faiss::DistanceComputer *) 0 ;
+  faiss::DistanceComputer::idx_t arg2 ;
+  faiss::DistanceComputer::idx_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  float result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "DistanceComputer_symmetric_dis", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DistanceComputer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "DistanceComputer_symmetric_dis" "', argument " "1"" of type '" "faiss::DistanceComputer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DistanceComputer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "DistanceComputer_symmetric_dis" "', argument " "2"" of type '" "faiss::DistanceComputer::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::DistanceComputer::idx_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "DistanceComputer_symmetric_dis" "', argument " "3"" of type '" "faiss::DistanceComputer::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::DistanceComputer::idx_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (float)(arg1)->symmetric_dis(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_DistanceComputer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::DistanceComputer *arg1 = (faiss::DistanceComputer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__DistanceComputer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_DistanceComputer" "', argument " "1"" of type '" "faiss::DistanceComputer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::DistanceComputer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *DistanceComputer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__DistanceComputer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_InterruptCallback_want_interrupt(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InterruptCallback *arg1 = (faiss::InterruptCallback *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InterruptCallback, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "InterruptCallback_want_interrupt" "', argument " "1"" of type '" "faiss::InterruptCallback *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InterruptCallback * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)(arg1)->want_interrupt();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_InterruptCallback(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InterruptCallback *arg1 = (faiss::InterruptCallback *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InterruptCallback, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_InterruptCallback" "', argument " "1"" of type '" "faiss::InterruptCallback *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InterruptCallback * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InterruptCallback_clear_instance(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InterruptCallback_clear_instance", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::InterruptCallback::clear_instance();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InterruptCallback_check(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InterruptCallback_check", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::InterruptCallback::check();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InterruptCallback_is_interrupted(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  bool result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "InterruptCallback_is_interrupted", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)faiss::InterruptCallback::is_interrupted();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_InterruptCallback_get_period_hint(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "InterruptCallback_get_period_hint" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)faiss::InterruptCallback::get_period_hint(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *InterruptCallback_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__InterruptCallback, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_VisitedTable_visited_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VisitedTable *arg1 = (faiss::VisitedTable *) 0 ;
+  std::vector< uint8_t > *arg2 = (std::vector< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VisitedTable_visited_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VisitedTable, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VisitedTable_visited_set" "', argument " "1"" of type '" "faiss::VisitedTable *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VisitedTable * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "VisitedTable_visited_set" "', argument " "2"" of type '" "std::vector< uint8_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< uint8_t > * >(argp2);
+  if (arg1) (arg1)->visited = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VisitedTable_visited_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VisitedTable *arg1 = (faiss::VisitedTable *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< uint8_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VisitedTable, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VisitedTable_visited_get" "', argument " "1"" of type '" "faiss::VisitedTable *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VisitedTable * >(argp1);
+  result = (std::vector< uint8_t > *)& ((arg1)->visited);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_unsigned_char_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VisitedTable_visno_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VisitedTable *arg1 = (faiss::VisitedTable *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VisitedTable_visno_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VisitedTable, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VisitedTable_visno_set" "', argument " "1"" of type '" "faiss::VisitedTable *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VisitedTable * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VisitedTable_visno_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->visno = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VisitedTable_visno_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VisitedTable *arg1 = (faiss::VisitedTable *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VisitedTable, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VisitedTable_visno_get" "', argument " "1"" of type '" "faiss::VisitedTable *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VisitedTable * >(argp1);
+  result = (int) ((arg1)->visno);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_VisitedTable(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::VisitedTable *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_VisitedTable" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::VisitedTable *)new faiss::VisitedTable(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__VisitedTable, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VisitedTable_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VisitedTable *arg1 = (faiss::VisitedTable *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VisitedTable_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VisitedTable, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VisitedTable_set" "', argument " "1"" of type '" "faiss::VisitedTable *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VisitedTable * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VisitedTable_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VisitedTable_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VisitedTable *arg1 = (faiss::VisitedTable *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  bool result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "VisitedTable_get", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VisitedTable, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VisitedTable_get" "', argument " "1"" of type '" "faiss::VisitedTable const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VisitedTable * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "VisitedTable_get" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)((faiss::VisitedTable const *)arg1)->get(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_VisitedTable_advance(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VisitedTable *arg1 = (faiss::VisitedTable *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VisitedTable, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "VisitedTable_advance" "', argument " "1"" of type '" "faiss::VisitedTable *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VisitedTable * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->advance();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_VisitedTable(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VisitedTable *arg1 = (faiss::VisitedTable *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VisitedTable, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_VisitedTable" "', argument " "1"" of type '" "faiss::VisitedTable *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VisitedTable * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *VisitedTable_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__VisitedTable, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *VisitedTable_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuClonerOptions(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_GpuClonerOptions", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuClonerOptions *)new faiss::gpu::GpuClonerOptions();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuClonerOptions, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_indicesOptions_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  faiss::gpu::IndicesOptions arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuClonerOptions_indicesOptions_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_indicesOptions_set" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuClonerOptions_indicesOptions_set" "', argument " "2"" of type '" "faiss::gpu::IndicesOptions""'");
+  } 
+  arg2 = static_cast< faiss::gpu::IndicesOptions >(val2);
+  if (arg1) (arg1)->indicesOptions = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_indicesOptions_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::IndicesOptions result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_indicesOptions_get" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  result = (faiss::gpu::IndicesOptions) ((arg1)->indicesOptions);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_useFloat16CoarseQuantizer_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuClonerOptions_useFloat16CoarseQuantizer_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_useFloat16CoarseQuantizer_set" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuClonerOptions_useFloat16CoarseQuantizer_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->useFloat16CoarseQuantizer = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_useFloat16CoarseQuantizer_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_useFloat16CoarseQuantizer_get" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  result = (bool) ((arg1)->useFloat16CoarseQuantizer);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_useFloat16_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuClonerOptions_useFloat16_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_useFloat16_set" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuClonerOptions_useFloat16_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->useFloat16 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_useFloat16_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_useFloat16_get" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  result = (bool) ((arg1)->useFloat16);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_usePrecomputed_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuClonerOptions_usePrecomputed_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_usePrecomputed_set" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuClonerOptions_usePrecomputed_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->usePrecomputed = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_usePrecomputed_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_usePrecomputed_get" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  result = (bool) ((arg1)->usePrecomputed);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_reserveVecs_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  long arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuClonerOptions_reserveVecs_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_reserveVecs_set" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuClonerOptions_reserveVecs_set" "', argument " "2"" of type '" "long""'");
+  } 
+  arg2 = static_cast< long >(val2);
+  if (arg1) (arg1)->reserveVecs = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_reserveVecs_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  long result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_reserveVecs_get" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  result = (long) ((arg1)->reserveVecs);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_storeTransposed_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuClonerOptions_storeTransposed_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_storeTransposed_set" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuClonerOptions_storeTransposed_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->storeTransposed = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_storeTransposed_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_storeTransposed_get" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  result = (bool) ((arg1)->storeTransposed);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_verbose_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuClonerOptions_verbose_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_verbose_set" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuClonerOptions_verbose_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->verbose = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuClonerOptions_verbose_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuClonerOptions_verbose_get" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  result = (bool) ((arg1)->verbose);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuClonerOptions(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuClonerOptions *arg1 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuClonerOptions" "', argument " "1"" of type '" "faiss::gpu::GpuClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuClonerOptions_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuClonerOptions, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuClonerOptions_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuMultipleClonerOptions(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuMultipleClonerOptions *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_GpuMultipleClonerOptions", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuMultipleClonerOptions *)new faiss::gpu::GpuMultipleClonerOptions();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuMultipleClonerOptions_shard_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuMultipleClonerOptions *arg1 = (faiss::gpu::GpuMultipleClonerOptions *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuMultipleClonerOptions_shard_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuMultipleClonerOptions_shard_set" "', argument " "1"" of type '" "faiss::gpu::GpuMultipleClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuMultipleClonerOptions * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuMultipleClonerOptions_shard_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->shard = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuMultipleClonerOptions_shard_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuMultipleClonerOptions *arg1 = (faiss::gpu::GpuMultipleClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuMultipleClonerOptions_shard_get" "', argument " "1"" of type '" "faiss::gpu::GpuMultipleClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuMultipleClonerOptions * >(argp1);
+  result = (bool) ((arg1)->shard);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuMultipleClonerOptions_shard_type_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuMultipleClonerOptions *arg1 = (faiss::gpu::GpuMultipleClonerOptions *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuMultipleClonerOptions_shard_type_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuMultipleClonerOptions_shard_type_set" "', argument " "1"" of type '" "faiss::gpu::GpuMultipleClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuMultipleClonerOptions * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuMultipleClonerOptions_shard_type_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->shard_type = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuMultipleClonerOptions_shard_type_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuMultipleClonerOptions *arg1 = (faiss::gpu::GpuMultipleClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuMultipleClonerOptions_shard_type_get" "', argument " "1"" of type '" "faiss::gpu::GpuMultipleClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuMultipleClonerOptions * >(argp1);
+  result = (int) ((arg1)->shard_type);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuMultipleClonerOptions(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuMultipleClonerOptions *arg1 = (faiss::gpu::GpuMultipleClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuMultipleClonerOptions" "', argument " "1"" of type '" "faiss::gpu::GpuMultipleClonerOptions *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuMultipleClonerOptions * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuMultipleClonerOptions_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuMultipleClonerOptions_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexConfig *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_GpuIndexConfig", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexConfig *)new faiss::gpu::GpuIndexConfig();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexConfig, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexConfig_device_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexConfig *arg1 = (faiss::gpu::GpuIndexConfig *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexConfig_device_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexConfig_device_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexConfig * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexConfig_device_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->device = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexConfig_device_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexConfig *arg1 = (faiss::gpu::GpuIndexConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexConfig_device_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexConfig * >(argp1);
+  result = (int) ((arg1)->device);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexConfig_memorySpace_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexConfig *arg1 = (faiss::gpu::GpuIndexConfig *) 0 ;
+  faiss::gpu::MemorySpace arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexConfig_memorySpace_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexConfig_memorySpace_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexConfig * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexConfig_memorySpace_set" "', argument " "2"" of type '" "faiss::gpu::MemorySpace""'");
+  } 
+  arg2 = static_cast< faiss::gpu::MemorySpace >(val2);
+  if (arg1) (arg1)->memorySpace = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexConfig_memorySpace_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexConfig *arg1 = (faiss::gpu::GpuIndexConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::MemorySpace result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexConfig_memorySpace_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexConfig * >(argp1);
+  result = (faiss::gpu::MemorySpace) ((arg1)->memorySpace);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexConfig *arg1 = (faiss::gpu::GpuIndexConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexConfig, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexConfig" "', argument " "1"" of type '" "faiss::gpu::GpuIndexConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexConfig * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexConfig_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexConfig, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexConfig_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_GpuIndex_getDevice(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndex *arg1 = (faiss::gpu::GpuIndex *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndex, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndex_getDevice" "', argument " "1"" of type '" "faiss::gpu::GpuIndex const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndex * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::gpu::GpuIndex const *)arg1)->getDevice();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndex_getResources(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndex *arg1 = (faiss::gpu::GpuIndex *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::shared_ptr< faiss::gpu::GpuResources > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndex, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndex_getResources" "', argument " "1"" of type '" "faiss::gpu::GpuIndex *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndex * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (arg1)->getResources();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    std::shared_ptr<  faiss::gpu::GpuResources > *smartresult = result ? new std::shared_ptr<  faiss::gpu::GpuResources >(result) : 0;
+    resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(smartresult), SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, SWIG_POINTER_OWN);
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndex_setMinPagingSize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndex *arg1 = (faiss::gpu::GpuIndex *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndex_setMinPagingSize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndex, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndex_setMinPagingSize" "', argument " "1"" of type '" "faiss::gpu::GpuIndex *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndex * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndex_setMinPagingSize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setMinPagingSize(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndex_getMinPagingSize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndex *arg1 = (faiss::gpu::GpuIndex *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndex, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndex_getMinPagingSize" "', argument " "1"" of type '" "faiss::gpu::GpuIndex const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndex * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::gpu::GpuIndex const *)arg1)->getMinPagingSize();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndex_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndex *arg1 = (faiss::gpu::GpuIndex *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndex_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndex, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndex_add" "', argument " "1"" of type '" "faiss::gpu::GpuIndex *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndex * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndex_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndex_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndex_add_with_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndex *arg1 = (faiss::gpu::GpuIndex *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndex_add_with_ids", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndex, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndex_add_with_ids" "', argument " "1"" of type '" "faiss::gpu::GpuIndex *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndex * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndex_add_with_ids" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndex_add_with_ids" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "GpuIndex_add_with_ids" "', argument " "4"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add_with_ids(arg2,(float const *)arg3,(faiss::Index::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndex_assign__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndex *arg1 = (faiss::gpu::GpuIndex *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  faiss::Index::idx_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndex, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndex_assign" "', argument " "1"" of type '" "faiss::gpu::GpuIndex const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndex * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndex_assign" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndex_assign" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "GpuIndex_assign" "', argument " "4"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "GpuIndex_assign" "', argument " "5"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg5 = static_cast< faiss::Index::idx_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndex const *)arg1)->assign(arg2,(float const *)arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndex_assign__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndex *arg1 = (faiss::gpu::GpuIndex *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t *arg4 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndex, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndex_assign" "', argument " "1"" of type '" "faiss::gpu::GpuIndex const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndex * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndex_assign" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndex_assign" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "GpuIndex_assign" "', argument " "4"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::Index::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndex const *)arg1)->assign(arg2,(float const *)arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndex_assign(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "GpuIndex_assign", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuIndex, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_GpuIndex_assign__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuIndex, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_long(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_GpuIndex_assign__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'GpuIndex_assign'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::GpuIndex::assign(faiss::Index::idx_t,float const *,faiss::Index::idx_t *,faiss::Index::idx_t) const\n"
+    "    faiss::gpu::GpuIndex::assign(faiss::Index::idx_t,float const *,faiss::Index::idx_t *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndex_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndex *arg1 = (faiss::gpu::GpuIndex *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  float *arg5 = (float *) 0 ;
+  faiss::Index::idx_t *arg6 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndex_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndex, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndex_search" "', argument " "1"" of type '" "faiss::gpu::GpuIndex const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndex * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndex_search" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndex_search" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "GpuIndex_search" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "GpuIndex_search" "', argument " "5"" of type '" "float *""'"); 
+  }
+  arg5 = reinterpret_cast< float * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "GpuIndex_search" "', argument " "6"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::Index::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndex const *)arg1)->search(arg2,(float const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndex_compute_residual(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndex *arg1 = (faiss::gpu::GpuIndex *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndex_compute_residual", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndex, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndex_compute_residual" "', argument " "1"" of type '" "faiss::gpu::GpuIndex const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndex * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndex_compute_residual" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndex_compute_residual" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "GpuIndex_compute_residual" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndex const *)arg1)->compute_residual((float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndex_compute_residual_n(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndex *arg1 = (faiss::gpu::GpuIndex *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndex_compute_residual_n", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndex, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndex_compute_residual_n" "', argument " "1"" of type '" "faiss::gpu::GpuIndex const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndex * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndex_compute_residual_n" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndex_compute_residual_n" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "GpuIndex_compute_residual_n" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "GpuIndex_compute_residual_n" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndex const *)arg1)->compute_residual_n(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndex(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndex *arg1 = (faiss::gpu::GpuIndex *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndex, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndex" "', argument " "1"" of type '" "faiss::gpu::GpuIndex *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndex * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndex_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndex, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlatConfig *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_GpuIndexFlatConfig", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatConfig *)new faiss::gpu::GpuIndexFlatConfig();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlatConfig_useFloat16_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlatConfig *arg1 = (faiss::gpu::GpuIndexFlatConfig *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlatConfig_useFloat16_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlatConfig_useFloat16_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlatConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexFlatConfig_useFloat16_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->useFloat16 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlatConfig_useFloat16_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlatConfig *arg1 = (faiss::gpu::GpuIndexFlatConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlatConfig_useFloat16_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlatConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp1);
+  result = (bool) ((arg1)->useFloat16);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlatConfig_storeTransposed_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlatConfig *arg1 = (faiss::gpu::GpuIndexFlatConfig *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlatConfig_storeTransposed_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlatConfig_storeTransposed_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlatConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexFlatConfig_storeTransposed_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->storeTransposed = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlatConfig_storeTransposed_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlatConfig *arg1 = (faiss::gpu::GpuIndexFlatConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlatConfig_storeTransposed_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlatConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp1);
+  result = (bool) ((arg1)->storeTransposed);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexFlatConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlatConfig *arg1 = (faiss::gpu::GpuIndexFlatConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexFlatConfig" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlatConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexFlatConfig_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexFlatConfig_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlat__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexFlat *arg2 = (faiss::IndexFlat *) 0 ;
+  faiss::gpu::GpuIndexFlatConfig arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexFlat *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlat" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexFlat" "', argument " "2"" of type '" "faiss::IndexFlat const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlat * >(argp2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexFlat" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexFlat" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlat *)new faiss::gpu::GpuIndexFlat(arg1,(faiss::IndexFlat const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlat__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexFlat *arg2 = (faiss::IndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::gpu::GpuIndexFlat *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlat" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexFlat" "', argument " "2"" of type '" "faiss::IndexFlat const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlat *)new faiss::gpu::GpuIndexFlat(arg1,(faiss::IndexFlat const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlat__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::shared_ptr< faiss::gpu::GpuResources > arg1 ;
+  faiss::IndexFlat *arg2 = (faiss::IndexFlat *) 0 ;
+  faiss::gpu::GpuIndexFlatConfig arg3 ;
+  void *argp1 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexFlat *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t,  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlat" "', argument " "1"" of type '" "std::shared_ptr< faiss::gpu::GpuResources >""'");
+    }
+    if (argp1) arg1 = *(reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1));
+    if (newmem & SWIG_CAST_NEW_MEMORY) delete reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1);
+  }
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexFlat" "', argument " "2"" of type '" "faiss::IndexFlat const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlat * >(argp2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexFlat" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexFlat" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlat *)new faiss::gpu::GpuIndexFlat(arg1,(faiss::IndexFlat const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlat__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::shared_ptr< faiss::gpu::GpuResources > arg1 ;
+  faiss::IndexFlat *arg2 = (faiss::IndexFlat *) 0 ;
+  void *argp1 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::gpu::GpuIndexFlat *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t,  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlat" "', argument " "1"" of type '" "std::shared_ptr< faiss::gpu::GpuResources >""'");
+    }
+    if (argp1) arg1 = *(reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1));
+    if (newmem & SWIG_CAST_NEW_MEMORY) delete reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1);
+  }
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexFlat" "', argument " "2"" of type '" "faiss::IndexFlat const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlat *)new faiss::gpu::GpuIndexFlat(arg1,(faiss::IndexFlat const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlat__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  faiss::MetricType arg3 ;
+  faiss::gpu::GpuIndexFlatConfig arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 ;
+  int res4 = 0 ;
+  faiss::gpu::GpuIndexFlat *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlat" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_GpuIndexFlat" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res4)) {
+      SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "new_GpuIndexFlat" "', argument " "4"" of type '" "faiss::gpu::GpuIndexFlatConfig""'"); 
+    }  
+    if (!argp4) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexFlat" "', argument " "4"" of type '" "faiss::gpu::GpuIndexFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp4);
+      arg4 = *temp;
+      if (SWIG_IsNewObj(res4)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlat *)new faiss::gpu::GpuIndexFlat(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlat__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  faiss::MetricType arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::gpu::GpuIndexFlat *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlat" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_GpuIndexFlat" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlat *)new faiss::gpu::GpuIndexFlat(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlat__SWIG_6(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::shared_ptr< faiss::gpu::GpuResources > arg1 ;
+  int arg2 ;
+  faiss::MetricType arg3 ;
+  faiss::gpu::GpuIndexFlatConfig arg4 ;
+  void *argp1 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  void *argp4 ;
+  int res4 = 0 ;
+  faiss::gpu::GpuIndexFlat *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t,  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlat" "', argument " "1"" of type '" "std::shared_ptr< faiss::gpu::GpuResources >""'");
+    }
+    if (argp1) arg1 = *(reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1));
+    if (newmem & SWIG_CAST_NEW_MEMORY) delete reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1);
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_GpuIndexFlat" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res4)) {
+      SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "new_GpuIndexFlat" "', argument " "4"" of type '" "faiss::gpu::GpuIndexFlatConfig""'"); 
+    }  
+    if (!argp4) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexFlat" "', argument " "4"" of type '" "faiss::gpu::GpuIndexFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp4);
+      arg4 = *temp;
+      if (SWIG_IsNewObj(res4)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlat *)new faiss::gpu::GpuIndexFlat(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlat__SWIG_7(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::shared_ptr< faiss::gpu::GpuResources > arg1 ;
+  int arg2 ;
+  faiss::MetricType arg3 ;
+  void *argp1 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::gpu::GpuIndexFlat *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t,  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlat" "', argument " "1"" of type '" "std::shared_ptr< faiss::gpu::GpuResources >""'");
+    }
+    if (argp1) arg1 = *(reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1));
+    if (newmem & SWIG_CAST_NEW_MEMORY) delete reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1);
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_GpuIndexFlat" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlat *)new faiss::gpu::GpuIndexFlat(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlat(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_GpuIndexFlat", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexFlat, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_GpuIndexFlat__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexFlat, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_GpuIndexFlat__SWIG_3(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexFlat, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexFlat__SWIG_2(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexFlat, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexFlat__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_GpuIndexFlat__SWIG_5(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_new_GpuIndexFlat__SWIG_7(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          int res = SWIG_ConvertPtr(argv[3], 0, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_NO_NULL | 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_new_GpuIndexFlat__SWIG_6(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          int res = SWIG_ConvertPtr(argv[3], 0, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_NO_NULL | 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_new_GpuIndexFlat__SWIG_4(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_GpuIndexFlat'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::GpuIndexFlat::GpuIndexFlat(faiss::gpu::GpuResourcesProvider *,faiss::IndexFlat const *,faiss::gpu::GpuIndexFlatConfig)\n"
+    "    faiss::gpu::GpuIndexFlat::GpuIndexFlat(faiss::gpu::GpuResourcesProvider *,faiss::IndexFlat const *)\n"
+    "    faiss::gpu::GpuIndexFlat::GpuIndexFlat(std::shared_ptr< faiss::gpu::GpuResources >,faiss::IndexFlat const *,faiss::gpu::GpuIndexFlatConfig)\n"
+    "    faiss::gpu::GpuIndexFlat::GpuIndexFlat(std::shared_ptr< faiss::gpu::GpuResources >,faiss::IndexFlat const *)\n"
+    "    faiss::gpu::GpuIndexFlat::GpuIndexFlat(faiss::gpu::GpuResourcesProvider *,int,faiss::MetricType,faiss::gpu::GpuIndexFlatConfig)\n"
+    "    faiss::gpu::GpuIndexFlat::GpuIndexFlat(faiss::gpu::GpuResourcesProvider *,int,faiss::MetricType)\n"
+    "    faiss::gpu::GpuIndexFlat::GpuIndexFlat(std::shared_ptr< faiss::gpu::GpuResources >,int,faiss::MetricType,faiss::gpu::GpuIndexFlatConfig)\n"
+    "    faiss::gpu::GpuIndexFlat::GpuIndexFlat(std::shared_ptr< faiss::gpu::GpuResources >,int,faiss::MetricType)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexFlat(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlat *arg1 = (faiss::gpu::GpuIndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexFlat" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlat_copyFrom(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlat *arg1 = (faiss::gpu::GpuIndexFlat *) 0 ;
+  faiss::IndexFlat *arg2 = (faiss::IndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlat_copyFrom", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlat_copyFrom" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlat * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexFlat_copyFrom" "', argument " "2"" of type '" "faiss::IndexFlat const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copyFrom((faiss::IndexFlat const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlat_copyTo(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlat *arg1 = (faiss::gpu::GpuIndexFlat *) 0 ;
+  faiss::IndexFlat *arg2 = (faiss::IndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlat_copyTo", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlat_copyTo" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlat * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexFlat_copyTo" "', argument " "2"" of type '" "faiss::IndexFlat *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndexFlat const *)arg1)->copyTo(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlat_getNumVecs(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlat *arg1 = (faiss::gpu::GpuIndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlat_getNumVecs" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::gpu::GpuIndexFlat const *)arg1)->getNumVecs();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlat_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlat *arg1 = (faiss::gpu::GpuIndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlat_reset" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlat_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlat *arg1 = (faiss::gpu::GpuIndexFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlat_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlat_train" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexFlat_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndexFlat_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlat_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlat *arg1 = (faiss::gpu::GpuIndexFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlat_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlat_add" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexFlat_add" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndexFlat_add" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlat_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlat *arg1 = (faiss::gpu::GpuIndexFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlat_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlat_reconstruct" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexFlat_reconstruct" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndexFlat_reconstruct" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndexFlat const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlat_reconstruct_n(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlat *arg1 = (faiss::gpu::GpuIndexFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  faiss::Index::idx_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  long val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlat_reconstruct_n", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlat_reconstruct_n" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexFlat_reconstruct_n" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  ecode3 = SWIG_AsVal_long(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "GpuIndexFlat_reconstruct_n" "', argument " "3"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg3 = static_cast< faiss::Index::idx_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "GpuIndexFlat_reconstruct_n" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndexFlat const *)arg1)->reconstruct_n(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlat_compute_residual(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlat *arg1 = (faiss::gpu::GpuIndexFlat *) 0 ;
+  float *arg2 = (float *) 0 ;
+  float *arg3 = (float *) 0 ;
+  faiss::Index::idx_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlat_compute_residual", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlat_compute_residual" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlat * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexFlat_compute_residual" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndexFlat_compute_residual" "', argument " "3"" of type '" "float *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "GpuIndexFlat_compute_residual" "', argument " "4"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::Index::idx_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndexFlat const *)arg1)->compute_residual((float const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlat_compute_residual_n(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlat *arg1 = (faiss::gpu::GpuIndexFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  float *arg4 = (float *) 0 ;
+  faiss::Index::idx_t *arg5 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlat_compute_residual_n", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlat_compute_residual_n" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexFlat_compute_residual_n" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndexFlat_compute_residual_n" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "GpuIndexFlat_compute_residual_n" "', argument " "4"" of type '" "float *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "GpuIndexFlat_compute_residual_n" "', argument " "5"" of type '" "faiss::Index::idx_t const *""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::Index::idx_t * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndexFlat const *)arg1)->compute_residual_n(arg2,(float const *)arg3,arg4,(faiss::Index::idx_t const *)arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlat_getGpuData(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlat *arg1 = (faiss::gpu::GpuIndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::FlatIndex *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlat_getGpuData" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::FlatIndex *)(arg1)->getGpuData();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__FlatIndex, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexFlat_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexFlat, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexFlat_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatL2__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexFlatL2 *arg2 = (faiss::IndexFlatL2 *) 0 ;
+  faiss::gpu::GpuIndexFlatConfig arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexFlatL2 *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatL2" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlatL2, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexFlatL2" "', argument " "2"" of type '" "faiss::IndexFlatL2 *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlatL2 * >(argp2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexFlatL2" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexFlatL2" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatL2 *)new faiss::gpu::GpuIndexFlatL2(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatL2, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatL2__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexFlatL2 *arg2 = (faiss::IndexFlatL2 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::gpu::GpuIndexFlatL2 *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatL2" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlatL2, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexFlatL2" "', argument " "2"" of type '" "faiss::IndexFlatL2 *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlatL2 * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatL2 *)new faiss::gpu::GpuIndexFlatL2(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatL2, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatL2__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::shared_ptr< faiss::gpu::GpuResources > arg1 ;
+  faiss::IndexFlatL2 *arg2 = (faiss::IndexFlatL2 *) 0 ;
+  faiss::gpu::GpuIndexFlatConfig arg3 ;
+  void *argp1 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexFlatL2 *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t,  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatL2" "', argument " "1"" of type '" "std::shared_ptr< faiss::gpu::GpuResources >""'");
+    }
+    if (argp1) arg1 = *(reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1));
+    if (newmem & SWIG_CAST_NEW_MEMORY) delete reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1);
+  }
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlatL2, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexFlatL2" "', argument " "2"" of type '" "faiss::IndexFlatL2 *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlatL2 * >(argp2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexFlatL2" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexFlatL2" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatL2 *)new faiss::gpu::GpuIndexFlatL2(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatL2, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatL2__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::shared_ptr< faiss::gpu::GpuResources > arg1 ;
+  faiss::IndexFlatL2 *arg2 = (faiss::IndexFlatL2 *) 0 ;
+  void *argp1 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::gpu::GpuIndexFlatL2 *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t,  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatL2" "', argument " "1"" of type '" "std::shared_ptr< faiss::gpu::GpuResources >""'");
+    }
+    if (argp1) arg1 = *(reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1));
+    if (newmem & SWIG_CAST_NEW_MEMORY) delete reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1);
+  }
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlatL2, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexFlatL2" "', argument " "2"" of type '" "faiss::IndexFlatL2 *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlatL2 * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatL2 *)new faiss::gpu::GpuIndexFlatL2(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatL2, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatL2__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  faiss::gpu::GpuIndexFlatConfig arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexFlatL2 *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatL2" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexFlatL2" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexFlatL2" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexFlatL2" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatL2 *)new faiss::gpu::GpuIndexFlatL2(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatL2, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatL2__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::gpu::GpuIndexFlatL2 *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatL2" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexFlatL2" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatL2 *)new faiss::gpu::GpuIndexFlatL2(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatL2, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatL2__SWIG_6(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::shared_ptr< faiss::gpu::GpuResources > arg1 ;
+  int arg2 ;
+  faiss::gpu::GpuIndexFlatConfig arg3 ;
+  void *argp1 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexFlatL2 *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t,  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatL2" "', argument " "1"" of type '" "std::shared_ptr< faiss::gpu::GpuResources >""'");
+    }
+    if (argp1) arg1 = *(reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1));
+    if (newmem & SWIG_CAST_NEW_MEMORY) delete reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1);
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexFlatL2" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexFlatL2" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexFlatL2" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatL2 *)new faiss::gpu::GpuIndexFlatL2(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatL2, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatL2__SWIG_7(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::shared_ptr< faiss::gpu::GpuResources > arg1 ;
+  int arg2 ;
+  void *argp1 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::gpu::GpuIndexFlatL2 *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t,  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatL2" "', argument " "1"" of type '" "std::shared_ptr< faiss::gpu::GpuResources >""'");
+    }
+    if (argp1) arg1 = *(reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1));
+    if (newmem & SWIG_CAST_NEW_MEMORY) delete reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1);
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexFlatL2" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatL2 *)new faiss::gpu::GpuIndexFlatL2(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatL2, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatL2(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_GpuIndexFlatL2", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexFlatL2, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_GpuIndexFlatL2__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexFlatL2, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_GpuIndexFlatL2__SWIG_3(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_GpuIndexFlatL2__SWIG_5(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_GpuIndexFlatL2__SWIG_7(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexFlatL2, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexFlatL2__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexFlatL2, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexFlatL2__SWIG_2(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexFlatL2__SWIG_6(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexFlatL2__SWIG_4(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_GpuIndexFlatL2'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::GpuIndexFlatL2::GpuIndexFlatL2(faiss::gpu::GpuResourcesProvider *,faiss::IndexFlatL2 *,faiss::gpu::GpuIndexFlatConfig)\n"
+    "    faiss::gpu::GpuIndexFlatL2::GpuIndexFlatL2(faiss::gpu::GpuResourcesProvider *,faiss::IndexFlatL2 *)\n"
+    "    faiss::gpu::GpuIndexFlatL2::GpuIndexFlatL2(std::shared_ptr< faiss::gpu::GpuResources >,faiss::IndexFlatL2 *,faiss::gpu::GpuIndexFlatConfig)\n"
+    "    faiss::gpu::GpuIndexFlatL2::GpuIndexFlatL2(std::shared_ptr< faiss::gpu::GpuResources >,faiss::IndexFlatL2 *)\n"
+    "    faiss::gpu::GpuIndexFlatL2::GpuIndexFlatL2(faiss::gpu::GpuResourcesProvider *,int,faiss::gpu::GpuIndexFlatConfig)\n"
+    "    faiss::gpu::GpuIndexFlatL2::GpuIndexFlatL2(faiss::gpu::GpuResourcesProvider *,int)\n"
+    "    faiss::gpu::GpuIndexFlatL2::GpuIndexFlatL2(std::shared_ptr< faiss::gpu::GpuResources >,int,faiss::gpu::GpuIndexFlatConfig)\n"
+    "    faiss::gpu::GpuIndexFlatL2::GpuIndexFlatL2(std::shared_ptr< faiss::gpu::GpuResources >,int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlatL2_copyFrom(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlatL2 *arg1 = (faiss::gpu::GpuIndexFlatL2 *) 0 ;
+  faiss::IndexFlat *arg2 = (faiss::IndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlatL2_copyFrom", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlatL2, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlatL2_copyFrom" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlatL2 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlatL2 * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexFlatL2_copyFrom" "', argument " "2"" of type '" "faiss::IndexFlat *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copyFrom(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlatL2_copyTo(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlatL2 *arg1 = (faiss::gpu::GpuIndexFlatL2 *) 0 ;
+  faiss::IndexFlat *arg2 = (faiss::IndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlatL2_copyTo", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlatL2, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlatL2_copyTo" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlatL2 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlatL2 * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexFlatL2_copyTo" "', argument " "2"" of type '" "faiss::IndexFlat *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copyTo(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexFlatL2(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlatL2 *arg1 = (faiss::gpu::GpuIndexFlatL2 *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlatL2, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexFlatL2" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlatL2 *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlatL2 * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexFlatL2_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexFlatL2, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexFlatL2_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatIP__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexFlatIP *arg2 = (faiss::IndexFlatIP *) 0 ;
+  faiss::gpu::GpuIndexFlatConfig arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexFlatIP *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatIP" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlatIP, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexFlatIP" "', argument " "2"" of type '" "faiss::IndexFlatIP *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlatIP * >(argp2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexFlatIP" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexFlatIP" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatIP *)new faiss::gpu::GpuIndexFlatIP(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatIP, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatIP__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexFlatIP *arg2 = (faiss::IndexFlatIP *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::gpu::GpuIndexFlatIP *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatIP" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlatIP, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexFlatIP" "', argument " "2"" of type '" "faiss::IndexFlatIP *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlatIP * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatIP *)new faiss::gpu::GpuIndexFlatIP(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatIP, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatIP__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::shared_ptr< faiss::gpu::GpuResources > arg1 ;
+  faiss::IndexFlatIP *arg2 = (faiss::IndexFlatIP *) 0 ;
+  faiss::gpu::GpuIndexFlatConfig arg3 ;
+  void *argp1 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexFlatIP *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t,  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatIP" "', argument " "1"" of type '" "std::shared_ptr< faiss::gpu::GpuResources >""'");
+    }
+    if (argp1) arg1 = *(reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1));
+    if (newmem & SWIG_CAST_NEW_MEMORY) delete reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1);
+  }
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlatIP, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexFlatIP" "', argument " "2"" of type '" "faiss::IndexFlatIP *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlatIP * >(argp2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexFlatIP" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexFlatIP" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatIP *)new faiss::gpu::GpuIndexFlatIP(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatIP, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatIP__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::shared_ptr< faiss::gpu::GpuResources > arg1 ;
+  faiss::IndexFlatIP *arg2 = (faiss::IndexFlatIP *) 0 ;
+  void *argp1 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::gpu::GpuIndexFlatIP *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t,  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatIP" "', argument " "1"" of type '" "std::shared_ptr< faiss::gpu::GpuResources >""'");
+    }
+    if (argp1) arg1 = *(reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1));
+    if (newmem & SWIG_CAST_NEW_MEMORY) delete reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1);
+  }
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlatIP, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexFlatIP" "', argument " "2"" of type '" "faiss::IndexFlatIP *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlatIP * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatIP *)new faiss::gpu::GpuIndexFlatIP(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatIP, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatIP__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  faiss::gpu::GpuIndexFlatConfig arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexFlatIP *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatIP" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexFlatIP" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexFlatIP" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexFlatIP" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatIP *)new faiss::gpu::GpuIndexFlatIP(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatIP, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatIP__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::gpu::GpuIndexFlatIP *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatIP" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexFlatIP" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatIP *)new faiss::gpu::GpuIndexFlatIP(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatIP, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatIP__SWIG_6(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::shared_ptr< faiss::gpu::GpuResources > arg1 ;
+  int arg2 ;
+  faiss::gpu::GpuIndexFlatConfig arg3 ;
+  void *argp1 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexFlatIP *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t,  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatIP" "', argument " "1"" of type '" "std::shared_ptr< faiss::gpu::GpuResources >""'");
+    }
+    if (argp1) arg1 = *(reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1));
+    if (newmem & SWIG_CAST_NEW_MEMORY) delete reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1);
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexFlatIP" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexFlatIP" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexFlatIP" "', argument " "3"" of type '" "faiss::gpu::GpuIndexFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatIP *)new faiss::gpu::GpuIndexFlatIP(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatIP, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatIP__SWIG_7(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::shared_ptr< faiss::gpu::GpuResources > arg1 ;
+  int arg2 ;
+  void *argp1 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::gpu::GpuIndexFlatIP *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  {
+    int newmem = 0;
+    res1 = SWIG_ConvertPtrAndOwn(swig_obj[0], &argp1, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t,  0 , &newmem);
+    if (!SWIG_IsOK(res1)) {
+      SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexFlatIP" "', argument " "1"" of type '" "std::shared_ptr< faiss::gpu::GpuResources >""'");
+    }
+    if (argp1) arg1 = *(reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1));
+    if (newmem & SWIG_CAST_NEW_MEMORY) delete reinterpret_cast< std::shared_ptr< faiss::gpu::GpuResources > * >(argp1);
+  }
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexFlatIP" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlatIP *)new faiss::gpu::GpuIndexFlatIP(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatIP, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexFlatIP(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_GpuIndexFlatIP", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexFlatIP, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_GpuIndexFlatIP__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexFlatIP, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_GpuIndexFlatIP__SWIG_3(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_GpuIndexFlatIP__SWIG_5(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_GpuIndexFlatIP__SWIG_7(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexFlatIP, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexFlatIP__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexFlatIP, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexFlatIP__SWIG_2(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexFlatIP__SWIG_6(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexFlatIP__SWIG_4(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_GpuIndexFlatIP'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::GpuIndexFlatIP::GpuIndexFlatIP(faiss::gpu::GpuResourcesProvider *,faiss::IndexFlatIP *,faiss::gpu::GpuIndexFlatConfig)\n"
+    "    faiss::gpu::GpuIndexFlatIP::GpuIndexFlatIP(faiss::gpu::GpuResourcesProvider *,faiss::IndexFlatIP *)\n"
+    "    faiss::gpu::GpuIndexFlatIP::GpuIndexFlatIP(std::shared_ptr< faiss::gpu::GpuResources >,faiss::IndexFlatIP *,faiss::gpu::GpuIndexFlatConfig)\n"
+    "    faiss::gpu::GpuIndexFlatIP::GpuIndexFlatIP(std::shared_ptr< faiss::gpu::GpuResources >,faiss::IndexFlatIP *)\n"
+    "    faiss::gpu::GpuIndexFlatIP::GpuIndexFlatIP(faiss::gpu::GpuResourcesProvider *,int,faiss::gpu::GpuIndexFlatConfig)\n"
+    "    faiss::gpu::GpuIndexFlatIP::GpuIndexFlatIP(faiss::gpu::GpuResourcesProvider *,int)\n"
+    "    faiss::gpu::GpuIndexFlatIP::GpuIndexFlatIP(std::shared_ptr< faiss::gpu::GpuResources >,int,faiss::gpu::GpuIndexFlatConfig)\n"
+    "    faiss::gpu::GpuIndexFlatIP::GpuIndexFlatIP(std::shared_ptr< faiss::gpu::GpuResources >,int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlatIP_copyFrom(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlatIP *arg1 = (faiss::gpu::GpuIndexFlatIP *) 0 ;
+  faiss::IndexFlat *arg2 = (faiss::IndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlatIP_copyFrom", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlatIP, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlatIP_copyFrom" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlatIP *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlatIP * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexFlatIP_copyFrom" "', argument " "2"" of type '" "faiss::IndexFlat *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copyFrom(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexFlatIP_copyTo(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlatIP *arg1 = (faiss::gpu::GpuIndexFlatIP *) 0 ;
+  faiss::IndexFlat *arg2 = (faiss::IndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexFlatIP_copyTo", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlatIP, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexFlatIP_copyTo" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlatIP *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlatIP * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexFlatIP_copyTo" "', argument " "2"" of type '" "faiss::IndexFlat *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copyTo(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexFlatIP(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexFlatIP *arg1 = (faiss::gpu::GpuIndexFlatIP *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexFlatIP, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexFlatIP" "', argument " "1"" of type '" "faiss::gpu::GpuIndexFlatIP *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexFlatIP * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexFlatIP_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexFlatIP, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexFlatIP_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFConfig *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_GpuIndexIVFConfig", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFConfig *)new faiss::gpu::GpuIndexIVFConfig();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFConfig, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFConfig_indicesOptions_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFConfig *arg1 = (faiss::gpu::GpuIndexIVFConfig *) 0 ;
+  faiss::gpu::IndicesOptions arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFConfig_indicesOptions_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFConfig_indicesOptions_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFConfig * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFConfig_indicesOptions_set" "', argument " "2"" of type '" "faiss::gpu::IndicesOptions""'");
+  } 
+  arg2 = static_cast< faiss::gpu::IndicesOptions >(val2);
+  if (arg1) (arg1)->indicesOptions = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFConfig_indicesOptions_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFConfig *arg1 = (faiss::gpu::GpuIndexIVFConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::IndicesOptions result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFConfig_indicesOptions_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFConfig * >(argp1);
+  result = (faiss::gpu::IndicesOptions) ((arg1)->indicesOptions);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFConfig_flatConfig_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFConfig *arg1 = (faiss::gpu::GpuIndexIVFConfig *) 0 ;
+  faiss::gpu::GpuIndexFlatConfig *arg2 = (faiss::gpu::GpuIndexFlatConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFConfig_flatConfig_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFConfig_flatConfig_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFConfig * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexIVFConfig_flatConfig_set" "', argument " "2"" of type '" "faiss::gpu::GpuIndexFlatConfig *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::gpu::GpuIndexFlatConfig * >(argp2);
+  if (arg1) (arg1)->flatConfig = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFConfig_flatConfig_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFConfig *arg1 = (faiss::gpu::GpuIndexIVFConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::GpuIndexFlatConfig *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFConfig_flatConfig_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFConfig * >(argp1);
+  result = (faiss::gpu::GpuIndexFlatConfig *)& ((arg1)->flatConfig);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlatConfig, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexIVFConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFConfig *arg1 = (faiss::gpu::GpuIndexIVFConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFConfig, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexIVFConfig" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFConfig * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexIVFConfig_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexIVFConfig, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexIVFConfig_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexIVF(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexIVF" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_copyFrom(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  faiss::IndexIVF *arg2 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVF_copyFrom", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_copyFrom" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexIVF_copyFrom" "', argument " "2"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVF * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copyFrom((faiss::IndexIVF const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_copyTo(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  faiss::IndexIVF *arg2 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVF_copyTo", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_copyTo" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexIVF_copyTo" "', argument " "2"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVF * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndexIVF const *)arg1)->copyTo(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_getNumLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_getNumLists" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::gpu::GpuIndexIVF const *)arg1)->getNumLists();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_getListLength(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVF_getListLength", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_getListLength" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVF_getListLength" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::gpu::GpuIndexIVF const *)arg1)->getListLength(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_getListVectorData__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  int arg2 ;
+  bool arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  std::vector< uint8_t > result;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_getListVectorData" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVF_getListVectorData" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "GpuIndexIVF_getListVectorData" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::GpuIndexIVF const *)arg1)->getListVectorData(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< uint8_t >(static_cast< const std::vector< uint8_t >& >(result))), SWIGTYPE_p_std__vectorT_unsigned_char_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_getListVectorData__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  std::vector< uint8_t > result;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_getListVectorData" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVF_getListVectorData" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::GpuIndexIVF const *)arg1)->getListVectorData(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< uint8_t >(static_cast< const std::vector< uint8_t >& >(result))), SWIGTYPE_p_std__vectorT_unsigned_char_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_getListVectorData(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "GpuIndexIVF_getListVectorData", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_GpuIndexIVF_getListVectorData__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_GpuIndexIVF_getListVectorData__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'GpuIndexIVF_getListVectorData'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::GpuIndexIVF::getListVectorData(int,bool) const\n"
+    "    faiss::gpu::GpuIndexIVF::getListVectorData(int) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_getListIndices(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  std::vector< faiss::Index::idx_t > result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVF_getListIndices", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_getListIndices" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVF_getListIndices" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::GpuIndexIVF const *)arg1)->getListIndices(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< faiss::Index::idx_t >(static_cast< const std::vector< faiss::Index::idx_t >& >(result))), SWIGTYPE_p_std__vectorT_long_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_getQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::GpuIndexFlat *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_getQuantizer" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexFlat *)(arg1)->getQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlat, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_setNumProbes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVF_setNumProbes", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_setNumProbes" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVF_setNumProbes" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setNumProbes(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_getNumProbes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_getNumProbes" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::gpu::GpuIndexIVF const *)arg1)->getNumProbes();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_cp_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  faiss::ClusteringParameters *arg2 = (faiss::ClusteringParameters *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVF_cp_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_cp_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexIVF_cp_set" "', argument " "2"" of type '" "faiss::ClusteringParameters *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ClusteringParameters * >(argp2);
+  if (arg1) (arg1)->cp = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_cp_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ClusteringParameters *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_cp_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  result = (faiss::ClusteringParameters *)& ((arg1)->cp);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ClusteringParameters, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_nlist_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVF_nlist_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_nlist_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVF_nlist_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nlist = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_nlist_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_nlist_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  result = (int) ((arg1)->nlist);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_nprobe_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVF_nprobe_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_nprobe_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVF_nprobe_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->nprobe = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_nprobe_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_nprobe_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  result = (int) ((arg1)->nprobe);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_quantizer_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  faiss::gpu::GpuIndexFlat *arg2 = (faiss::gpu::GpuIndexFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVF_quantizer_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_quantizer_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__gpu__GpuIndexFlat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexIVF_quantizer_set" "', argument " "2"" of type '" "faiss::gpu::GpuIndexFlat *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::gpu::GpuIndexFlat * >(argp2);
+  if (arg1) (arg1)->quantizer = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVF_quantizer_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVF *arg1 = (faiss::gpu::GpuIndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::GpuIndexFlat *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVF_quantizer_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVF *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVF * >(argp1);
+  result = (faiss::gpu::GpuIndexFlat *) ((arg1)->quantizer);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexFlat, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexIVF_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexIVF, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFPQConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQConfig *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_GpuIndexIVFPQConfig", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFPQConfig *)new faiss::gpu::GpuIndexIVFPQConfig();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQConfig_useFloat16LookupTables_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQConfig *arg1 = (faiss::gpu::GpuIndexIVFPQConfig *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFPQConfig_useFloat16LookupTables_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQConfig_useFloat16LookupTables_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQConfig * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFPQConfig_useFloat16LookupTables_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->useFloat16LookupTables = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQConfig_useFloat16LookupTables_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQConfig *arg1 = (faiss::gpu::GpuIndexIVFPQConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQConfig_useFloat16LookupTables_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQConfig * >(argp1);
+  result = (bool) ((arg1)->useFloat16LookupTables);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQConfig_usePrecomputedTables_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQConfig *arg1 = (faiss::gpu::GpuIndexIVFPQConfig *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFPQConfig_usePrecomputedTables_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQConfig_usePrecomputedTables_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQConfig * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFPQConfig_usePrecomputedTables_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->usePrecomputedTables = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQConfig_usePrecomputedTables_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQConfig *arg1 = (faiss::gpu::GpuIndexIVFPQConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQConfig_usePrecomputedTables_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQConfig * >(argp1);
+  result = (bool) ((arg1)->usePrecomputedTables);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQConfig_interleavedLayout_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQConfig *arg1 = (faiss::gpu::GpuIndexIVFPQConfig *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFPQConfig_interleavedLayout_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQConfig_interleavedLayout_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQConfig * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFPQConfig_interleavedLayout_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->interleavedLayout = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQConfig_interleavedLayout_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQConfig *arg1 = (faiss::gpu::GpuIndexIVFPQConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQConfig_interleavedLayout_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQConfig * >(argp1);
+  result = (bool) ((arg1)->interleavedLayout);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQConfig_useMMCodeDistance_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQConfig *arg1 = (faiss::gpu::GpuIndexIVFPQConfig *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFPQConfig_useMMCodeDistance_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQConfig_useMMCodeDistance_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQConfig * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFPQConfig_useMMCodeDistance_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->useMMCodeDistance = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQConfig_useMMCodeDistance_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQConfig *arg1 = (faiss::gpu::GpuIndexIVFPQConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQConfig_useMMCodeDistance_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQConfig * >(argp1);
+  result = (bool) ((arg1)->useMMCodeDistance);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexIVFPQConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQConfig *arg1 = (faiss::gpu::GpuIndexIVFPQConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexIVFPQConfig" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQConfig * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexIVFPQConfig_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexIVFPQConfig_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFPQ__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexIVFPQ *arg2 = (faiss::IndexIVFPQ *) 0 ;
+  faiss::gpu::GpuIndexIVFPQConfig arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexIVFPQ *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFPQ" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexIVFPQ" "', argument " "2"" of type '" "faiss::IndexIVFPQ const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFPQ * >(argp2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexIVFPQ" "', argument " "3"" of type '" "faiss::gpu::GpuIndexIVFPQConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexIVFPQ" "', argument " "3"" of type '" "faiss::gpu::GpuIndexIVFPQConfig""'");
+    } else {
+      faiss::gpu::GpuIndexIVFPQConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexIVFPQConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFPQ *)new faiss::gpu::GpuIndexIVFPQ(arg1,(faiss::IndexIVFPQ const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFPQ__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexIVFPQ *arg2 = (faiss::IndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::gpu::GpuIndexIVFPQ *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFPQ" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexIVFPQ" "', argument " "2"" of type '" "faiss::IndexIVFPQ const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFPQ * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFPQ *)new faiss::gpu::GpuIndexIVFPQ(arg1,(faiss::IndexIVFPQ const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFPQ__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  int arg3 ;
+  int arg4 ;
+  int arg5 ;
+  faiss::MetricType arg6 ;
+  faiss::gpu::GpuIndexIVFPQConfig arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  void *argp7 ;
+  int res7 = 0 ;
+  faiss::gpu::GpuIndexIVFPQ *result = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFPQ" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexIVFPQ" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_GpuIndexIVFPQ" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_GpuIndexIVFPQ" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_GpuIndexIVFPQ" "', argument " "5"" of type '" "int""'");
+  } 
+  arg5 = static_cast< int >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_GpuIndexIVFPQ" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  {
+    res7 = SWIG_ConvertPtr(swig_obj[6], &argp7, SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig,  0  | 0);
+    if (!SWIG_IsOK(res7)) {
+      SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "new_GpuIndexIVFPQ" "', argument " "7"" of type '" "faiss::gpu::GpuIndexIVFPQConfig""'"); 
+    }  
+    if (!argp7) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexIVFPQ" "', argument " "7"" of type '" "faiss::gpu::GpuIndexIVFPQConfig""'");
+    } else {
+      faiss::gpu::GpuIndexIVFPQConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexIVFPQConfig * >(argp7);
+      arg7 = *temp;
+      if (SWIG_IsNewObj(res7)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFPQ *)new faiss::gpu::GpuIndexIVFPQ(arg1,arg2,arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFPQ__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  int arg3 ;
+  int arg4 ;
+  int arg5 ;
+  faiss::MetricType arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  int val6 ;
+  int ecode6 = 0 ;
+  faiss::gpu::GpuIndexIVFPQ *result = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFPQ" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexIVFPQ" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_GpuIndexIVFPQ" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_GpuIndexIVFPQ" "', argument " "4"" of type '" "int""'");
+  } 
+  arg4 = static_cast< int >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_GpuIndexIVFPQ" "', argument " "5"" of type '" "int""'");
+  } 
+  arg5 = static_cast< int >(val5);
+  ecode6 = SWIG_AsVal_int(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_GpuIndexIVFPQ" "', argument " "6"" of type '" "faiss::MetricType""'");
+  } 
+  arg6 = static_cast< faiss::MetricType >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFPQ *)new faiss::gpu::GpuIndexIVFPQ(arg1,arg2,arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFPQ(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_GpuIndexIVFPQ", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexIVFPQ, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_GpuIndexIVFPQ__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexIVFPQ, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexIVFPQ__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_new_GpuIndexIVFPQ__SWIG_3(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_int(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                int res = SWIG_ConvertPtr(argv[6], 0, SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQConfig, SWIG_POINTER_NO_NULL | 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  return _wrap_new_GpuIndexIVFPQ__SWIG_2(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_GpuIndexIVFPQ'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::GpuIndexIVFPQ::GpuIndexIVFPQ(faiss::gpu::GpuResourcesProvider *,faiss::IndexIVFPQ const *,faiss::gpu::GpuIndexIVFPQConfig)\n"
+    "    faiss::gpu::GpuIndexIVFPQ::GpuIndexIVFPQ(faiss::gpu::GpuResourcesProvider *,faiss::IndexIVFPQ const *)\n"
+    "    faiss::gpu::GpuIndexIVFPQ::GpuIndexIVFPQ(faiss::gpu::GpuResourcesProvider *,int,int,int,int,faiss::MetricType,faiss::gpu::GpuIndexIVFPQConfig)\n"
+    "    faiss::gpu::GpuIndexIVFPQ::GpuIndexIVFPQ(faiss::gpu::GpuResourcesProvider *,int,int,int,int,faiss::MetricType)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexIVFPQ(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexIVFPQ" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_copyFrom(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  faiss::IndexIVFPQ *arg2 = (faiss::IndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFPQ_copyFrom", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_copyFrom" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexIVFPQ_copyFrom" "', argument " "2"" of type '" "faiss::IndexIVFPQ const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFPQ * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copyFrom((faiss::IndexIVFPQ const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_copyTo(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  faiss::IndexIVFPQ *arg2 = (faiss::IndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFPQ_copyTo", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_copyTo" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexIVFPQ_copyTo" "', argument " "2"" of type '" "faiss::IndexIVFPQ *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFPQ * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndexIVFPQ const *)arg1)->copyTo(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_reserveMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFPQ_reserveMemory", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_reserveMemory" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFPQ_reserveMemory" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reserveMemory(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_setPrecomputedCodes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFPQ_setPrecomputedCodes", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_setPrecomputedCodes" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFPQ_setPrecomputedCodes" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->setPrecomputedCodes(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_getPrecomputedCodes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_getPrecomputedCodes" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)((faiss::gpu::GpuIndexIVFPQ const *)arg1)->getPrecomputedCodes();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_getNumSubQuantizers(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_getNumSubQuantizers" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::gpu::GpuIndexIVFPQ const *)arg1)->getNumSubQuantizers();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_getBitsPerCode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_getBitsPerCode" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::gpu::GpuIndexIVFPQ const *)arg1)->getBitsPerCode();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_getCentroidsPerSubQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_getCentroidsPerSubQuantizer" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::gpu::GpuIndexIVFPQ const *)arg1)->getCentroidsPerSubQuantizer();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_reclaimMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_reclaimMemory" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->reclaimMemory();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_reset" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFPQ_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_train" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFPQ_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndexIVFPQ_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_getListLength(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFPQ_getListLength", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_getListLength" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFPQ_getListLength" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::gpu::GpuIndexIVFPQ const *)arg1)->getListLength(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_getListVectorData__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  int arg2 ;
+  bool arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  std::vector< uint8_t > result;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_getListVectorData" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFPQ_getListVectorData" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "GpuIndexIVFPQ_getListVectorData" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::GpuIndexIVFPQ const *)arg1)->getListVectorData(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< uint8_t >(static_cast< const std::vector< uint8_t >& >(result))), SWIGTYPE_p_std__vectorT_unsigned_char_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_getListVectorData__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  std::vector< uint8_t > result;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_getListVectorData" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFPQ_getListVectorData" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::GpuIndexIVFPQ const *)arg1)->getListVectorData(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< uint8_t >(static_cast< const std::vector< uint8_t >& >(result))), SWIGTYPE_p_std__vectorT_unsigned_char_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_getListVectorData(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "GpuIndexIVFPQ_getListVectorData", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_GpuIndexIVFPQ_getListVectorData__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_GpuIndexIVFPQ_getListVectorData__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'GpuIndexIVFPQ_getListVectorData'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::GpuIndexIVFPQ::getListVectorData(int,bool) const\n"
+    "    faiss::gpu::GpuIndexIVFPQ::getListVectorData(int) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_getListIndices(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  std::vector< faiss::Index::idx_t > result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFPQ_getListIndices", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_getListIndices" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFPQ_getListIndices" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::GpuIndexIVFPQ const *)arg1)->getListIndices(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< faiss::Index::idx_t >(static_cast< const std::vector< faiss::Index::idx_t >& >(result))), SWIGTYPE_p_std__vectorT_long_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_pq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  faiss::ProductQuantizer *arg2 = (faiss::ProductQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFPQ_pq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_pq_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexIVFPQ_pq_set" "', argument " "2"" of type '" "faiss::ProductQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ProductQuantizer * >(argp2);
+  if (arg1) (arg1)->pq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFPQ_pq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFPQ *arg1 = (faiss::gpu::GpuIndexIVFPQ *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ProductQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFPQ_pq_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFPQ *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFPQ * >(argp1);
+  result = (faiss::ProductQuantizer *)& ((arg1)->pq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexIVFPQ_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexIVFPQ_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFFlatConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlatConfig *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_GpuIndexIVFFlatConfig", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFFlatConfig *)new faiss::gpu::GpuIndexIVFFlatConfig();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlatConfig, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFFlatConfig_interleavedLayout_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlatConfig *arg1 = (faiss::gpu::GpuIndexIVFFlatConfig *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFFlatConfig_interleavedLayout_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlatConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFFlatConfig_interleavedLayout_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlatConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlatConfig * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFFlatConfig_interleavedLayout_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->interleavedLayout = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFFlatConfig_interleavedLayout_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlatConfig *arg1 = (faiss::gpu::GpuIndexIVFFlatConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlatConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFFlatConfig_interleavedLayout_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlatConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlatConfig * >(argp1);
+  result = (bool) ((arg1)->interleavedLayout);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexIVFFlatConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlatConfig *arg1 = (faiss::gpu::GpuIndexIVFFlatConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlatConfig, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexIVFFlatConfig" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlatConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlatConfig * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexIVFFlatConfig_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlatConfig, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexIVFFlatConfig_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFFlat__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexIVFFlat *arg2 = (faiss::IndexIVFFlat *) 0 ;
+  faiss::gpu::GpuIndexIVFFlatConfig arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexIVFFlat *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFFlat" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexIVFFlat" "', argument " "2"" of type '" "faiss::IndexIVFFlat const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFFlat * >(argp2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexIVFFlat" "', argument " "3"" of type '" "faiss::gpu::GpuIndexIVFFlatConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexIVFFlat" "', argument " "3"" of type '" "faiss::gpu::GpuIndexIVFFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexIVFFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexIVFFlatConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFFlat *)new faiss::gpu::GpuIndexIVFFlat(arg1,(faiss::IndexIVFFlat const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFFlat__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexIVFFlat *arg2 = (faiss::IndexIVFFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::gpu::GpuIndexIVFFlat *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFFlat" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexIVFFlat" "', argument " "2"" of type '" "faiss::IndexIVFFlat const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFFlat *)new faiss::gpu::GpuIndexIVFFlat(arg1,(faiss::IndexIVFFlat const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFFlat__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  int arg3 ;
+  faiss::MetricType arg4 ;
+  faiss::gpu::GpuIndexIVFFlatConfig arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  void *argp5 ;
+  int res5 = 0 ;
+  faiss::gpu::GpuIndexIVFFlat *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFFlat" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexIVFFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_GpuIndexIVFFlat" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_GpuIndexIVFFlat" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  {
+    res5 = SWIG_ConvertPtr(swig_obj[4], &argp5, SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res5)) {
+      SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "new_GpuIndexIVFFlat" "', argument " "5"" of type '" "faiss::gpu::GpuIndexIVFFlatConfig""'"); 
+    }  
+    if (!argp5) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexIVFFlat" "', argument " "5"" of type '" "faiss::gpu::GpuIndexIVFFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexIVFFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexIVFFlatConfig * >(argp5);
+      arg5 = *temp;
+      if (SWIG_IsNewObj(res5)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFFlat *)new faiss::gpu::GpuIndexIVFFlat(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFFlat__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  int arg3 ;
+  faiss::MetricType arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::gpu::GpuIndexIVFFlat *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFFlat" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexIVFFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_GpuIndexIVFFlat" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_GpuIndexIVFFlat" "', argument " "4"" of type '" "faiss::MetricType""'");
+  } 
+  arg4 = static_cast< faiss::MetricType >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFFlat *)new faiss::gpu::GpuIndexIVFFlat(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFFlat(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_GpuIndexIVFFlat", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexIVFFlat, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_GpuIndexIVFFlat__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexIVFFlat, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlatConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexIVFFlat__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_GpuIndexIVFFlat__SWIG_3(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            int res = SWIG_ConvertPtr(argv[4], 0, SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlatConfig, SWIG_POINTER_NO_NULL | 0);
+            _v = SWIG_CheckState(res);
+            if (_v) {
+              return _wrap_new_GpuIndexIVFFlat__SWIG_2(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_GpuIndexIVFFlat'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::GpuIndexIVFFlat::GpuIndexIVFFlat(faiss::gpu::GpuResourcesProvider *,faiss::IndexIVFFlat const *,faiss::gpu::GpuIndexIVFFlatConfig)\n"
+    "    faiss::gpu::GpuIndexIVFFlat::GpuIndexIVFFlat(faiss::gpu::GpuResourcesProvider *,faiss::IndexIVFFlat const *)\n"
+    "    faiss::gpu::GpuIndexIVFFlat::GpuIndexIVFFlat(faiss::gpu::GpuResourcesProvider *,int,int,faiss::MetricType,faiss::gpu::GpuIndexIVFFlatConfig)\n"
+    "    faiss::gpu::GpuIndexIVFFlat::GpuIndexIVFFlat(faiss::gpu::GpuResourcesProvider *,int,int,faiss::MetricType)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexIVFFlat(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlat *arg1 = (faiss::gpu::GpuIndexIVFFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexIVFFlat" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFFlat_reserveMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlat *arg1 = (faiss::gpu::GpuIndexIVFFlat *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFFlat_reserveMemory", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFFlat_reserveMemory" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlat * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFFlat_reserveMemory" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reserveMemory(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFFlat_copyFrom(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlat *arg1 = (faiss::gpu::GpuIndexIVFFlat *) 0 ;
+  faiss::IndexIVFFlat *arg2 = (faiss::IndexIVFFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFFlat_copyFrom", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFFlat_copyFrom" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlat * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexIVFFlat_copyFrom" "', argument " "2"" of type '" "faiss::IndexIVFFlat const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copyFrom((faiss::IndexIVFFlat const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFFlat_copyTo(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlat *arg1 = (faiss::gpu::GpuIndexIVFFlat *) 0 ;
+  faiss::IndexIVFFlat *arg2 = (faiss::IndexIVFFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFFlat_copyTo", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFFlat_copyTo" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlat * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexIVFFlat_copyTo" "', argument " "2"" of type '" "faiss::IndexIVFFlat *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndexIVFFlat const *)arg1)->copyTo(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFFlat_reclaimMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlat *arg1 = (faiss::gpu::GpuIndexIVFFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFFlat_reclaimMemory" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->reclaimMemory();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFFlat_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlat *arg1 = (faiss::gpu::GpuIndexIVFFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFFlat_reset" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFFlat_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlat *arg1 = (faiss::gpu::GpuIndexIVFFlat *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFFlat_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFFlat_train" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFFlat_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndexIVFFlat_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFFlat_getListLength(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlat *arg1 = (faiss::gpu::GpuIndexIVFFlat *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFFlat_getListLength", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFFlat_getListLength" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlat * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFFlat_getListLength" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::gpu::GpuIndexIVFFlat const *)arg1)->getListLength(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFFlat_getListVectorData__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlat *arg1 = (faiss::gpu::GpuIndexIVFFlat *) 0 ;
+  int arg2 ;
+  bool arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  std::vector< uint8_t > result;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFFlat_getListVectorData" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlat * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFFlat_getListVectorData" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "GpuIndexIVFFlat_getListVectorData" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::GpuIndexIVFFlat const *)arg1)->getListVectorData(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< uint8_t >(static_cast< const std::vector< uint8_t >& >(result))), SWIGTYPE_p_std__vectorT_unsigned_char_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFFlat_getListVectorData__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlat *arg1 = (faiss::gpu::GpuIndexIVFFlat *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  std::vector< uint8_t > result;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFFlat_getListVectorData" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlat * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFFlat_getListVectorData" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::GpuIndexIVFFlat const *)arg1)->getListVectorData(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< uint8_t >(static_cast< const std::vector< uint8_t >& >(result))), SWIGTYPE_p_std__vectorT_unsigned_char_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFFlat_getListVectorData(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "GpuIndexIVFFlat_getListVectorData", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_GpuIndexIVFFlat_getListVectorData__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_GpuIndexIVFFlat_getListVectorData__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'GpuIndexIVFFlat_getListVectorData'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::GpuIndexIVFFlat::getListVectorData(int,bool) const\n"
+    "    faiss::gpu::GpuIndexIVFFlat::getListVectorData(int) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFFlat_getListIndices(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFFlat *arg1 = (faiss::gpu::GpuIndexIVFFlat *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  std::vector< faiss::Index::idx_t > result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFFlat_getListIndices", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFFlat_getListIndices" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFFlat * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFFlat_getListIndices" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::GpuIndexIVFFlat const *)arg1)->getListIndices(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< faiss::Index::idx_t >(static_cast< const std::vector< faiss::Index::idx_t >& >(result))), SWIGTYPE_p_std__vectorT_long_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexIVFFlat_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexIVFFlat_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFScalarQuantizerConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizerConfig *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_GpuIndexIVFScalarQuantizerConfig", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFScalarQuantizerConfig *)new faiss::gpu::GpuIndexIVFScalarQuantizerConfig();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizerConfig_interleavedLayout_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizerConfig *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizerConfig *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFScalarQuantizerConfig_interleavedLayout_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizerConfig_interleavedLayout_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizerConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizerConfig * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFScalarQuantizerConfig_interleavedLayout_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->interleavedLayout = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizerConfig_interleavedLayout_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizerConfig *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizerConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizerConfig_interleavedLayout_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizerConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizerConfig * >(argp1);
+  result = (bool) ((arg1)->interleavedLayout);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexIVFScalarQuantizerConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizerConfig *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizerConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexIVFScalarQuantizerConfig" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizerConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizerConfig * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexIVFScalarQuantizerConfig_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexIVFScalarQuantizerConfig_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFScalarQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexIVFScalarQuantizer *arg2 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  faiss::gpu::GpuIndexIVFScalarQuantizerConfig arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "2"" of type '" "faiss::IndexIVFScalarQuantizer const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "3"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizerConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "3"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizerConfig""'");
+    } else {
+      faiss::gpu::GpuIndexIVFScalarQuantizerConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizerConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFScalarQuantizer *)new faiss::gpu::GpuIndexIVFScalarQuantizer(arg1,(faiss::IndexIVFScalarQuantizer const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFScalarQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexIVFScalarQuantizer *arg2 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "2"" of type '" "faiss::IndexIVFScalarQuantizer const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFScalarQuantizer *)new faiss::gpu::GpuIndexIVFScalarQuantizer(arg1,(faiss::IndexIVFScalarQuantizer const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFScalarQuantizer__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  int arg3 ;
+  faiss::ScalarQuantizer::QuantizerType arg4 ;
+  faiss::MetricType arg5 ;
+  bool arg6 ;
+  faiss::gpu::GpuIndexIVFScalarQuantizerConfig arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  bool val6 ;
+  int ecode6 = 0 ;
+  void *argp7 ;
+  int res7 = 0 ;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "4"" of type '" "faiss::ScalarQuantizer::QuantizerType""'");
+  } 
+  arg4 = static_cast< faiss::ScalarQuantizer::QuantizerType >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "5"" of type '" "faiss::MetricType""'");
+  } 
+  arg5 = static_cast< faiss::MetricType >(val5);
+  ecode6 = SWIG_AsVal_bool(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "6"" of type '" "bool""'");
+  } 
+  arg6 = static_cast< bool >(val6);
+  {
+    res7 = SWIG_ConvertPtr(swig_obj[6], &argp7, SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig,  0  | 0);
+    if (!SWIG_IsOK(res7)) {
+      SWIG_exception_fail(SWIG_ArgError(res7), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "7"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizerConfig""'"); 
+    }  
+    if (!argp7) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "7"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizerConfig""'");
+    } else {
+      faiss::gpu::GpuIndexIVFScalarQuantizerConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizerConfig * >(argp7);
+      arg7 = *temp;
+      if (SWIG_IsNewObj(res7)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFScalarQuantizer *)new faiss::gpu::GpuIndexIVFScalarQuantizer(arg1,arg2,arg3,arg4,arg5,arg6,arg7);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFScalarQuantizer__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  int arg3 ;
+  faiss::ScalarQuantizer::QuantizerType arg4 ;
+  faiss::MetricType arg5 ;
+  bool arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  bool val6 ;
+  int ecode6 = 0 ;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "4"" of type '" "faiss::ScalarQuantizer::QuantizerType""'");
+  } 
+  arg4 = static_cast< faiss::ScalarQuantizer::QuantizerType >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "5"" of type '" "faiss::MetricType""'");
+  } 
+  arg5 = static_cast< faiss::MetricType >(val5);
+  ecode6 = SWIG_AsVal_bool(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "6"" of type '" "bool""'");
+  } 
+  arg6 = static_cast< bool >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFScalarQuantizer *)new faiss::gpu::GpuIndexIVFScalarQuantizer(arg1,arg2,arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFScalarQuantizer__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  int arg3 ;
+  faiss::ScalarQuantizer::QuantizerType arg4 ;
+  faiss::MetricType arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "4"" of type '" "faiss::ScalarQuantizer::QuantizerType""'");
+  } 
+  arg4 = static_cast< faiss::ScalarQuantizer::QuantizerType >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "5"" of type '" "faiss::MetricType""'");
+  } 
+  arg5 = static_cast< faiss::MetricType >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFScalarQuantizer *)new faiss::gpu::GpuIndexIVFScalarQuantizer(arg1,arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFScalarQuantizer__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  int arg3 ;
+  faiss::ScalarQuantizer::QuantizerType arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  int val4 ;
+  int ecode4 = 0 ;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "3"" of type '" "int""'");
+  } 
+  arg3 = static_cast< int >(val3);
+  ecode4 = SWIG_AsVal_int(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "new_GpuIndexIVFScalarQuantizer" "', argument " "4"" of type '" "faiss::ScalarQuantizer::QuantizerType""'");
+  } 
+  arg4 = static_cast< faiss::ScalarQuantizer::QuantizerType >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexIVFScalarQuantizer *)new faiss::gpu::GpuIndexIVFScalarQuantizer(arg1,arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexIVFScalarQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_GpuIndexIVFScalarQuantizer", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_GpuIndexIVFScalarQuantizer__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexIVFScalarQuantizer__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_new_GpuIndexIVFScalarQuantizer__SWIG_5(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_new_GpuIndexIVFScalarQuantizer__SWIG_4(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_bool(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_new_GpuIndexIVFScalarQuantizer__SWIG_3(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_int(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_int(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_bool(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                int res = SWIG_ConvertPtr(argv[6], 0, SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig, SWIG_POINTER_NO_NULL | 0);
+                _v = SWIG_CheckState(res);
+                if (_v) {
+                  return _wrap_new_GpuIndexIVFScalarQuantizer__SWIG_2(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_GpuIndexIVFScalarQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::GpuIndexIVFScalarQuantizer::GpuIndexIVFScalarQuantizer(faiss::gpu::GpuResourcesProvider *,faiss::IndexIVFScalarQuantizer const *,faiss::gpu::GpuIndexIVFScalarQuantizerConfig)\n"
+    "    faiss::gpu::GpuIndexIVFScalarQuantizer::GpuIndexIVFScalarQuantizer(faiss::gpu::GpuResourcesProvider *,faiss::IndexIVFScalarQuantizer const *)\n"
+    "    faiss::gpu::GpuIndexIVFScalarQuantizer::GpuIndexIVFScalarQuantizer(faiss::gpu::GpuResourcesProvider *,int,int,faiss::ScalarQuantizer::QuantizerType,faiss::MetricType,bool,faiss::gpu::GpuIndexIVFScalarQuantizerConfig)\n"
+    "    faiss::gpu::GpuIndexIVFScalarQuantizer::GpuIndexIVFScalarQuantizer(faiss::gpu::GpuResourcesProvider *,int,int,faiss::ScalarQuantizer::QuantizerType,faiss::MetricType,bool)\n"
+    "    faiss::gpu::GpuIndexIVFScalarQuantizer::GpuIndexIVFScalarQuantizer(faiss::gpu::GpuResourcesProvider *,int,int,faiss::ScalarQuantizer::QuantizerType,faiss::MetricType)\n"
+    "    faiss::gpu::GpuIndexIVFScalarQuantizer::GpuIndexIVFScalarQuantizer(faiss::gpu::GpuResourcesProvider *,int,int,faiss::ScalarQuantizer::QuantizerType)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexIVFScalarQuantizer(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexIVFScalarQuantizer" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_reserveMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFScalarQuantizer_reserveMemory", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_reserveMemory" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFScalarQuantizer_reserveMemory" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reserveMemory(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_copyFrom(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  faiss::IndexIVFScalarQuantizer *arg2 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFScalarQuantizer_copyFrom", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_copyFrom" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexIVFScalarQuantizer_copyFrom" "', argument " "2"" of type '" "faiss::IndexIVFScalarQuantizer const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copyFrom((faiss::IndexIVFScalarQuantizer const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_copyTo(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  faiss::IndexIVFScalarQuantizer *arg2 = (faiss::IndexIVFScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFScalarQuantizer_copyTo", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_copyTo" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexIVFScalarQuantizer_copyTo" "', argument " "2"" of type '" "faiss::IndexIVFScalarQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVFScalarQuantizer * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndexIVFScalarQuantizer const *)arg1)->copyTo(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_reclaimMemory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_reclaimMemory" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->reclaimMemory();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_reset" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_train(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  faiss::Index::idx_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFScalarQuantizer_train", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_train" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFScalarQuantizer_train" "', argument " "2"" of type '" "faiss::Index::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::Index::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndexIVFScalarQuantizer_train" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->train(arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_getListLength(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFScalarQuantizer_getListLength", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_getListLength" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFScalarQuantizer_getListLength" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::gpu::GpuIndexIVFScalarQuantizer const *)arg1)->getListLength(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_getListVectorData__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  int arg2 ;
+  bool arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  bool val3 ;
+  int ecode3 = 0 ;
+  std::vector< uint8_t > result;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_getListVectorData" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFScalarQuantizer_getListVectorData" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  ecode3 = SWIG_AsVal_bool(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "GpuIndexIVFScalarQuantizer_getListVectorData" "', argument " "3"" of type '" "bool""'");
+  } 
+  arg3 = static_cast< bool >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::GpuIndexIVFScalarQuantizer const *)arg1)->getListVectorData(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< uint8_t >(static_cast< const std::vector< uint8_t >& >(result))), SWIGTYPE_p_std__vectorT_unsigned_char_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_getListVectorData__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  std::vector< uint8_t > result;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_getListVectorData" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFScalarQuantizer_getListVectorData" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::GpuIndexIVFScalarQuantizer const *)arg1)->getListVectorData(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< uint8_t >(static_cast< const std::vector< uint8_t >& >(result))), SWIGTYPE_p_std__vectorT_unsigned_char_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_getListVectorData(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "GpuIndexIVFScalarQuantizer_getListVectorData", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_GpuIndexIVFScalarQuantizer_getListVectorData__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_bool(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_GpuIndexIVFScalarQuantizer_getListVectorData__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'GpuIndexIVFScalarQuantizer_getListVectorData'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::GpuIndexIVFScalarQuantizer::getListVectorData(int,bool) const\n"
+    "    faiss::gpu::GpuIndexIVFScalarQuantizer::getListVectorData(int) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_getListIndices(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  std::vector< faiss::Index::idx_t > result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFScalarQuantizer_getListIndices", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_getListIndices" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFScalarQuantizer_getListIndices" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::gpu::GpuIndexIVFScalarQuantizer const *)arg1)->getListIndices(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj((new std::vector< faiss::Index::idx_t >(static_cast< const std::vector< faiss::Index::idx_t >& >(result))), SWIGTYPE_p_std__vectorT_long_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_sq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  faiss::ScalarQuantizer *arg2 = (faiss::ScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFScalarQuantizer_sq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_sq_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexIVFScalarQuantizer_sq_set" "', argument " "2"" of type '" "faiss::ScalarQuantizer *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::ScalarQuantizer * >(argp2);
+  if (arg1) (arg1)->sq = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_sq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::ScalarQuantizer *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_sq_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  result = (faiss::ScalarQuantizer *)& ((arg1)->sq);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ScalarQuantizer, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_by_residual_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexIVFScalarQuantizer_by_residual_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_by_residual_set" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexIVFScalarQuantizer_by_residual_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->by_residual = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexIVFScalarQuantizer_by_residual_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexIVFScalarQuantizer *arg1 = (faiss::gpu::GpuIndexIVFScalarQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexIVFScalarQuantizer_by_residual_get" "', argument " "1"" of type '" "faiss::gpu::GpuIndexIVFScalarQuantizer *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexIVFScalarQuantizer * >(argp1);
+  result = (bool) ((arg1)->by_residual);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexIVFScalarQuantizer_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexIVFScalarQuantizer_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexBinaryFlatConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexBinaryFlatConfig *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_GpuIndexBinaryFlatConfig", 0, 0, 0)) SWIG_fail;
+  result = (faiss::gpu::GpuIndexBinaryFlatConfig *)new faiss::gpu::GpuIndexBinaryFlatConfig();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlatConfig, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexBinaryFlatConfig(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexBinaryFlatConfig *arg1 = (faiss::gpu::GpuIndexBinaryFlatConfig *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlatConfig, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexBinaryFlatConfig" "', argument " "1"" of type '" "faiss::gpu::GpuIndexBinaryFlatConfig *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexBinaryFlatConfig * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexBinaryFlatConfig_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlatConfig, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexBinaryFlatConfig_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexBinaryFlat__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexBinaryFlat *arg2 = (faiss::IndexBinaryFlat *) 0 ;
+  faiss::gpu::GpuIndexBinaryFlatConfig arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexBinaryFlat *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexBinaryFlat" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexBinaryFlat" "', argument " "2"" of type '" "faiss::IndexBinaryFlat const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexBinaryFlat" "', argument " "3"" of type '" "faiss::gpu::GpuIndexBinaryFlatConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexBinaryFlat" "', argument " "3"" of type '" "faiss::gpu::GpuIndexBinaryFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexBinaryFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexBinaryFlatConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexBinaryFlat *)new faiss::gpu::GpuIndexBinaryFlat(arg1,(faiss::IndexBinaryFlat const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexBinaryFlat__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::IndexBinaryFlat *arg2 = (faiss::IndexBinaryFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::gpu::GpuIndexBinaryFlat *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexBinaryFlat" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIndexBinaryFlat" "', argument " "2"" of type '" "faiss::IndexBinaryFlat const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexBinaryFlat *)new faiss::gpu::GpuIndexBinaryFlat(arg1,(faiss::IndexBinaryFlat const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexBinaryFlat__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  faiss::gpu::GpuIndexBinaryFlatConfig arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 ;
+  int res3 = 0 ;
+  faiss::gpu::GpuIndexBinaryFlat *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexBinaryFlat" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexBinaryFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlatConfig,  0  | 0);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIndexBinaryFlat" "', argument " "3"" of type '" "faiss::gpu::GpuIndexBinaryFlatConfig""'"); 
+    }  
+    if (!argp3) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIndexBinaryFlat" "', argument " "3"" of type '" "faiss::gpu::GpuIndexBinaryFlatConfig""'");
+    } else {
+      faiss::gpu::GpuIndexBinaryFlatConfig * temp = reinterpret_cast< faiss::gpu::GpuIndexBinaryFlatConfig * >(argp3);
+      arg3 = *temp;
+      if (SWIG_IsNewObj(res3)) delete temp;
+    }
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexBinaryFlat *)new faiss::gpu::GpuIndexBinaryFlat(arg1,arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexBinaryFlat__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::gpu::GpuIndexBinaryFlat *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIndexBinaryFlat" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_GpuIndexBinaryFlat" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIndexBinaryFlat *)new faiss::gpu::GpuIndexBinaryFlat(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIndexBinaryFlat(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_GpuIndexBinaryFlat", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexBinaryFlat, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_GpuIndexBinaryFlat__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_GpuIndexBinaryFlat__SWIG_3(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IndexBinaryFlat, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlatConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexBinaryFlat__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlatConfig, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_GpuIndexBinaryFlat__SWIG_2(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_GpuIndexBinaryFlat'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::GpuIndexBinaryFlat::GpuIndexBinaryFlat(faiss::gpu::GpuResourcesProvider *,faiss::IndexBinaryFlat const *,faiss::gpu::GpuIndexBinaryFlatConfig)\n"
+    "    faiss::gpu::GpuIndexBinaryFlat::GpuIndexBinaryFlat(faiss::gpu::GpuResourcesProvider *,faiss::IndexBinaryFlat const *)\n"
+    "    faiss::gpu::GpuIndexBinaryFlat::GpuIndexBinaryFlat(faiss::gpu::GpuResourcesProvider *,int,faiss::gpu::GpuIndexBinaryFlatConfig)\n"
+    "    faiss::gpu::GpuIndexBinaryFlat::GpuIndexBinaryFlat(faiss::gpu::GpuResourcesProvider *,int)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIndexBinaryFlat(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexBinaryFlat *arg1 = (faiss::gpu::GpuIndexBinaryFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIndexBinaryFlat" "', argument " "1"" of type '" "faiss::gpu::GpuIndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexBinaryFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexBinaryFlat_getDevice(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexBinaryFlat *arg1 = (faiss::gpu::GpuIndexBinaryFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexBinaryFlat_getDevice" "', argument " "1"" of type '" "faiss::gpu::GpuIndexBinaryFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexBinaryFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)((faiss::gpu::GpuIndexBinaryFlat const *)arg1)->getDevice();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexBinaryFlat_getResources(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexBinaryFlat *arg1 = (faiss::gpu::GpuIndexBinaryFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::shared_ptr< faiss::gpu::GpuResources > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexBinaryFlat_getResources" "', argument " "1"" of type '" "faiss::gpu::GpuIndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexBinaryFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (arg1)->getResources();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    std::shared_ptr<  faiss::gpu::GpuResources > *smartresult = result ? new std::shared_ptr<  faiss::gpu::GpuResources >(result) : 0;
+    resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(smartresult), SWIGTYPE_p_std__shared_ptrT_faiss__gpu__GpuResources_t, SWIG_POINTER_OWN);
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexBinaryFlat_copyFrom(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexBinaryFlat *arg1 = (faiss::gpu::GpuIndexBinaryFlat *) 0 ;
+  faiss::IndexBinaryFlat *arg2 = (faiss::IndexBinaryFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexBinaryFlat_copyFrom", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexBinaryFlat_copyFrom" "', argument " "1"" of type '" "faiss::gpu::GpuIndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexBinaryFlat * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexBinaryFlat_copyFrom" "', argument " "2"" of type '" "faiss::IndexBinaryFlat const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copyFrom((faiss::IndexBinaryFlat const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexBinaryFlat_copyTo(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexBinaryFlat *arg1 = (faiss::gpu::GpuIndexBinaryFlat *) 0 ;
+  faiss::IndexBinaryFlat *arg2 = (faiss::IndexBinaryFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexBinaryFlat_copyTo", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexBinaryFlat_copyTo" "', argument " "1"" of type '" "faiss::gpu::GpuIndexBinaryFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexBinaryFlat * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIndexBinaryFlat_copyTo" "', argument " "2"" of type '" "faiss::IndexBinaryFlat *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexBinaryFlat * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndexBinaryFlat const *)arg1)->copyTo(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexBinaryFlat_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexBinaryFlat *arg1 = (faiss::gpu::GpuIndexBinaryFlat *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexBinaryFlat_add", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexBinaryFlat_add" "', argument " "1"" of type '" "faiss::gpu::GpuIndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexBinaryFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexBinaryFlat_add" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndexBinaryFlat_add" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->add(arg2,(uint8_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexBinaryFlat_reset(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexBinaryFlat *arg1 = (faiss::gpu::GpuIndexBinaryFlat *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexBinaryFlat_reset" "', argument " "1"" of type '" "faiss::gpu::GpuIndexBinaryFlat *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexBinaryFlat * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->reset();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexBinaryFlat_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexBinaryFlat *arg1 = (faiss::gpu::GpuIndexBinaryFlat *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  faiss::IndexBinary::idx_t arg4 ;
+  int32_t *arg5 = (int32_t *) 0 ;
+  faiss::IndexBinary::idx_t *arg6 = (faiss::IndexBinary::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexBinaryFlat_search", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexBinaryFlat_search" "', argument " "1"" of type '" "faiss::gpu::GpuIndexBinaryFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexBinaryFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexBinaryFlat_search" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndexBinaryFlat_search" "', argument " "3"" of type '" "uint8_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "GpuIndexBinaryFlat_search" "', argument " "4"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg4 = static_cast< faiss::IndexBinary::idx_t >(val4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "GpuIndexBinaryFlat_search" "', argument " "5"" of type '" "int32_t *""'"); 
+  }
+  arg5 = reinterpret_cast< int32_t * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "GpuIndexBinaryFlat_search" "', argument " "6"" of type '" "faiss::IndexBinary::idx_t *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::IndexBinary::idx_t * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndexBinaryFlat const *)arg1)->search(arg2,(uint8_t const *)arg3,arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIndexBinaryFlat_reconstruct(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIndexBinaryFlat *arg1 = (faiss::gpu::GpuIndexBinaryFlat *) 0 ;
+  faiss::IndexBinary::idx_t arg2 ;
+  uint8_t *arg3 = (uint8_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIndexBinaryFlat_reconstruct", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIndexBinaryFlat_reconstruct" "', argument " "1"" of type '" "faiss::gpu::GpuIndexBinaryFlat const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIndexBinaryFlat * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuIndexBinaryFlat_reconstruct" "', argument " "2"" of type '" "faiss::IndexBinary::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::IndexBinary::idx_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIndexBinaryFlat_reconstruct" "', argument " "3"" of type '" "uint8_t *""'"); 
+  }
+  arg3 = reinterpret_cast< uint8_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIndexBinaryFlat const *)arg1)->reconstruct(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIndexBinaryFlat_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIndexBinaryFlat_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuDistanceParams(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_GpuDistanceParams", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuDistanceParams *)new faiss::gpu::GpuDistanceParams();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuDistanceParams, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_metric_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  faiss::MetricType arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_metric_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_metric_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuDistanceParams_metric_set" "', argument " "2"" of type '" "faiss::MetricType""'");
+  } 
+  arg2 = static_cast< faiss::MetricType >(val2);
+  if (arg1) (arg1)->metric = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_metric_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::MetricType result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_metric_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (faiss::MetricType) ((arg1)->metric);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_metricArg_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  float arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_metricArg_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_metricArg_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  ecode2 = SWIG_AsVal_float(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuDistanceParams_metricArg_set" "', argument " "2"" of type '" "float""'");
+  } 
+  arg2 = static_cast< float >(val2);
+  if (arg1) (arg1)->metricArg = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_metricArg_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_metricArg_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (float) ((arg1)->metricArg);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_k_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_k_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_k_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuDistanceParams_k_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->k = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_k_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_k_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (int) ((arg1)->k);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_dims_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_dims_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_dims_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuDistanceParams_dims_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->dims = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_dims_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_dims_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (int) ((arg1)->dims);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_vectors_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *arg2 = (void *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_vectors_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_vectors_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, SWIG_POINTER_DISOWN);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuDistanceParams_vectors_set" "', argument " "2"" of type '" "void const *""'"); 
+  }
+  if (arg1) (arg1)->vectors = (void const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_vectors_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  void *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_vectors_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (void *) ((arg1)->vectors);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_void, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_vectorType_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  faiss::gpu::DistanceDataType arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_vectorType_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_vectorType_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuDistanceParams_vectorType_set" "', argument " "2"" of type '" "faiss::gpu::DistanceDataType""'");
+  } 
+  arg2 = static_cast< faiss::gpu::DistanceDataType >(val2);
+  if (arg1) (arg1)->vectorType = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_vectorType_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::DistanceDataType result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_vectorType_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (faiss::gpu::DistanceDataType) ((arg1)->vectorType);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_vectorsRowMajor_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_vectorsRowMajor_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_vectorsRowMajor_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuDistanceParams_vectorsRowMajor_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->vectorsRowMajor = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_vectorsRowMajor_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_vectorsRowMajor_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (bool) ((arg1)->vectorsRowMajor);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_numVectors_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_numVectors_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_numVectors_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuDistanceParams_numVectors_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->numVectors = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_numVectors_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_numVectors_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (int) ((arg1)->numVectors);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_vectorNorms_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_vectorNorms_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_vectorNorms_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuDistanceParams_vectorNorms_set" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  if (arg1) (arg1)->vectorNorms = (float const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_vectorNorms_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_vectorNorms_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (float *) ((arg1)->vectorNorms);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_queries_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *arg2 = (void *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_queries_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_queries_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, SWIG_POINTER_DISOWN);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuDistanceParams_queries_set" "', argument " "2"" of type '" "void const *""'"); 
+  }
+  if (arg1) (arg1)->queries = (void const *)arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_queries_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  void *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_queries_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (void *) ((arg1)->queries);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_void, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_queryType_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  faiss::gpu::DistanceDataType arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_queryType_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_queryType_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuDistanceParams_queryType_set" "', argument " "2"" of type '" "faiss::gpu::DistanceDataType""'");
+  } 
+  arg2 = static_cast< faiss::gpu::DistanceDataType >(val2);
+  if (arg1) (arg1)->queryType = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_queryType_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::DistanceDataType result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_queryType_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (faiss::gpu::DistanceDataType) ((arg1)->queryType);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_queriesRowMajor_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_queriesRowMajor_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_queriesRowMajor_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuDistanceParams_queriesRowMajor_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->queriesRowMajor = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_queriesRowMajor_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_queriesRowMajor_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (bool) ((arg1)->queriesRowMajor);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_numQueries_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_numQueries_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_numQueries_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuDistanceParams_numQueries_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->numQueries = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_numQueries_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_numQueries_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (int) ((arg1)->numQueries);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_outDistances_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  float *arg2 = (float *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_outDistances_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_outDistances_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuDistanceParams_outDistances_set" "', argument " "2"" of type '" "float *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  if (arg1) (arg1)->outDistances = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_outDistances_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_outDistances_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (float *) ((arg1)->outDistances);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_ignoreOutDistances_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_ignoreOutDistances_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_ignoreOutDistances_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuDistanceParams_ignoreOutDistances_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->ignoreOutDistances = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_ignoreOutDistances_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_ignoreOutDistances_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (bool) ((arg1)->ignoreOutDistances);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_outIndicesType_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  faiss::gpu::IndicesDataType arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_outIndicesType_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_outIndicesType_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuDistanceParams_outIndicesType_set" "', argument " "2"" of type '" "faiss::gpu::IndicesDataType""'");
+  } 
+  arg2 = static_cast< faiss::gpu::IndicesDataType >(val2);
+  if (arg1) (arg1)->outIndicesType = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_outIndicesType_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::IndicesDataType result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_outIndicesType_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (faiss::gpu::IndicesDataType) ((arg1)->outIndicesType);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_outIndices_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *arg2 = (void *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuDistanceParams_outIndices_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_outIndices_set" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, SWIG_POINTER_DISOWN);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuDistanceParams_outIndices_set" "', argument " "2"" of type '" "void *""'"); 
+  }
+  if (arg1) (arg1)->outIndices = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuDistanceParams_outIndices_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  void *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuDistanceParams_outIndices_get" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  result = (void *) ((arg1)->outIndices);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_void, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuDistanceParams(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuDistanceParams *arg1 = (faiss::gpu::GpuDistanceParams *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuDistanceParams, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuDistanceParams" "', argument " "1"" of type '" "faiss::gpu::GpuDistanceParams *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuDistanceParams_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuDistanceParams, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuDistanceParams_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_bfKnn(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::gpu::GpuDistanceParams *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "bfKnn", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "bfKnn" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__gpu__GpuDistanceParams,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "bfKnn" "', argument " "2"" of type '" "faiss::gpu::GpuDistanceParams const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "bfKnn" "', argument " "2"" of type '" "faiss::gpu::GpuDistanceParams const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::gpu::GpuDistanceParams * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::gpu::bfKnn(arg1,(faiss::gpu::GpuDistanceParams const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_bruteForceKnn(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  faiss::MetricType arg2 ;
+  float *arg3 = (float *) 0 ;
+  bool arg4 ;
+  int arg5 ;
+  float *arg6 = (float *) 0 ;
+  bool arg7 ;
+  int arg8 ;
+  int arg9 ;
+  int arg10 ;
+  float *arg11 = (float *) 0 ;
+  faiss::Index::idx_t *arg12 = (faiss::Index::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  bool val4 ;
+  int ecode4 = 0 ;
+  int val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  bool val7 ;
+  int ecode7 = 0 ;
+  int val8 ;
+  int ecode8 = 0 ;
+  int val9 ;
+  int ecode9 = 0 ;
+  int val10 ;
+  int ecode10 = 0 ;
+  void *argp11 = 0 ;
+  int res11 = 0 ;
+  void *argp12 = 0 ;
+  int res12 = 0 ;
+  PyObject *swig_obj[12] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "bruteForceKnn", 12, 12, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "bruteForceKnn" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "bruteForceKnn" "', argument " "2"" of type '" "faiss::MetricType""'");
+  } 
+  arg2 = static_cast< faiss::MetricType >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "bruteForceKnn" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  ecode4 = SWIG_AsVal_bool(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "bruteForceKnn" "', argument " "4"" of type '" "bool""'");
+  } 
+  arg4 = static_cast< bool >(val4);
+  ecode5 = SWIG_AsVal_int(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "bruteForceKnn" "', argument " "5"" of type '" "int""'");
+  } 
+  arg5 = static_cast< int >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "bruteForceKnn" "', argument " "6"" of type '" "float const *""'"); 
+  }
+  arg6 = reinterpret_cast< float * >(argp6);
+  ecode7 = SWIG_AsVal_bool(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "bruteForceKnn" "', argument " "7"" of type '" "bool""'");
+  } 
+  arg7 = static_cast< bool >(val7);
+  ecode8 = SWIG_AsVal_int(swig_obj[7], &val8);
+  if (!SWIG_IsOK(ecode8)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode8), "in method '" "bruteForceKnn" "', argument " "8"" of type '" "int""'");
+  } 
+  arg8 = static_cast< int >(val8);
+  ecode9 = SWIG_AsVal_int(swig_obj[8], &val9);
+  if (!SWIG_IsOK(ecode9)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode9), "in method '" "bruteForceKnn" "', argument " "9"" of type '" "int""'");
+  } 
+  arg9 = static_cast< int >(val9);
+  ecode10 = SWIG_AsVal_int(swig_obj[9], &val10);
+  if (!SWIG_IsOK(ecode10)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode10), "in method '" "bruteForceKnn" "', argument " "10"" of type '" "int""'");
+  } 
+  arg10 = static_cast< int >(val10);
+  res11 = SWIG_ConvertPtr(swig_obj[10], &argp11,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res11)) {
+    SWIG_exception_fail(SWIG_ArgError(res11), "in method '" "bruteForceKnn" "', argument " "11"" of type '" "float *""'"); 
+  }
+  arg11 = reinterpret_cast< float * >(argp11);
+  res12 = SWIG_ConvertPtr(swig_obj[11], &argp12,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res12)) {
+    SWIG_exception_fail(SWIG_ArgError(res12), "in method '" "bruteForceKnn" "', argument " "12"" of type '" "faiss::Index::idx_t *""'"); 
+  }
+  arg12 = reinterpret_cast< faiss::Index::idx_t * >(argp12);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::gpu::bruteForceKnn(arg1,arg2,(float const *)arg3,arg4,arg5,(float const *)arg6,arg7,arg8,arg9,arg10,arg11,arg12);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIcmEncoder(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::LocalSearchQuantizer *arg1 = (faiss::LocalSearchQuantizer *) 0 ;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg2 = 0 ;
+  std::vector< int > *arg3 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::gpu::GpuIcmEncoder *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_GpuIcmEncoder", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_GpuIcmEncoder" "', argument " "1"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_GpuIcmEncoder" "', argument " "2"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIcmEncoder" "', argument " "2"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > const &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_std__vectorT_int_t,  0  | 0);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_GpuIcmEncoder" "', argument " "3"" of type '" "std::vector< int > const &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_GpuIcmEncoder" "', argument " "3"" of type '" "std::vector< int > const &""'"); 
+  }
+  arg3 = reinterpret_cast< std::vector< int > * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIcmEncoder *)new faiss::gpu::GpuIcmEncoder((faiss::LocalSearchQuantizer const *)arg1,(std::vector< faiss::gpu::GpuResourcesProvider * > const &)*arg2,(std::vector< int > const &)*arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIcmEncoder, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIcmEncoder(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIcmEncoder *arg1 = (faiss::gpu::GpuIcmEncoder *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIcmEncoder, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIcmEncoder" "', argument " "1"" of type '" "faiss::gpu::GpuIcmEncoder *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIcmEncoder * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIcmEncoder_set_binary_term(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIcmEncoder *arg1 = (faiss::gpu::GpuIcmEncoder *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIcmEncoder, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIcmEncoder_set_binary_term" "', argument " "1"" of type '" "faiss::gpu::GpuIcmEncoder *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIcmEncoder * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_binary_term();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIcmEncoder_encode(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIcmEncoder *arg1 = (faiss::gpu::GpuIcmEncoder *) 0 ;
+  int32_t *arg2 = (int32_t *) 0 ;
+  float *arg3 = (float *) 0 ;
+  std::mt19937 *arg4 = 0 ;
+  size_t arg5 ;
+  size_t arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIcmEncoder_encode", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIcmEncoder, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIcmEncoder_encode" "', argument " "1"" of type '" "faiss::gpu::GpuIcmEncoder const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIcmEncoder * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIcmEncoder_encode" "', argument " "2"" of type '" "int32_t *""'"); 
+  }
+  arg2 = reinterpret_cast< int32_t * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuIcmEncoder_encode" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4, SWIGTYPE_p_std__mt19937,  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "GpuIcmEncoder_encode" "', argument " "4"" of type '" "std::mt19937 &""'"); 
+  }
+  if (!argp4) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "GpuIcmEncoder_encode" "', argument " "4"" of type '" "std::mt19937 &""'"); 
+  }
+  arg4 = reinterpret_cast< std::mt19937 * >(argp4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "GpuIcmEncoder_encode" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "GpuIcmEncoder_encode" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuIcmEncoder const *)arg1)->encode(arg2,(float const *)arg3,*arg4,arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIcmEncoder_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIcmEncoder, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIcmEncoder_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_new_GpuIcmEncoderFactory__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  faiss::gpu::GpuIcmEncoderFactory *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_GpuIcmEncoderFactory" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIcmEncoderFactory *)new faiss::gpu::GpuIcmEncoderFactory(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIcmEncoderFactory, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIcmEncoderFactory__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIcmEncoderFactory *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuIcmEncoderFactory *)new faiss::gpu::GpuIcmEncoderFactory();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuIcmEncoderFactory, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuIcmEncoderFactory(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_GpuIcmEncoderFactory", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_GpuIcmEncoderFactory__SWIG_1(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_GpuIcmEncoderFactory__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_GpuIcmEncoderFactory'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::GpuIcmEncoderFactory::GpuIcmEncoderFactory(int)\n"
+    "    faiss::gpu::GpuIcmEncoderFactory::GpuIcmEncoderFactory()\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIcmEncoderFactory_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIcmEncoderFactory *arg1 = (faiss::gpu::GpuIcmEncoderFactory *) 0 ;
+  faiss::LocalSearchQuantizer *arg2 = (faiss::LocalSearchQuantizer *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::lsq::IcmEncoder *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIcmEncoderFactory_get", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIcmEncoderFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIcmEncoderFactory_get" "', argument " "1"" of type '" "faiss::gpu::GpuIcmEncoderFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIcmEncoderFactory * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__LocalSearchQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIcmEncoderFactory_get" "', argument " "2"" of type '" "faiss::LocalSearchQuantizer const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::LocalSearchQuantizer * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::lsq::IcmEncoder *)(arg1)->get((faiss::LocalSearchQuantizer const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__lsq__IcmEncoder, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIcmEncoderFactory_provs_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIcmEncoderFactory *arg1 = (faiss::gpu::GpuIcmEncoderFactory *) 0 ;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg2 = (std::vector< faiss::gpu::GpuResourcesProvider * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIcmEncoderFactory_provs_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIcmEncoderFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIcmEncoderFactory_provs_set" "', argument " "1"" of type '" "faiss::gpu::GpuIcmEncoderFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIcmEncoderFactory * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIcmEncoderFactory_provs_set" "', argument " "2"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp2);
+  if (arg1) (arg1)->provs = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIcmEncoderFactory_provs_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIcmEncoderFactory *arg1 = (faiss::gpu::GpuIcmEncoderFactory *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIcmEncoderFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIcmEncoderFactory_provs_get" "', argument " "1"" of type '" "faiss::gpu::GpuIcmEncoderFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIcmEncoderFactory * >(argp1);
+  result = (std::vector< faiss::gpu::GpuResourcesProvider * > *)& ((arg1)->provs);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIcmEncoderFactory_devices_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIcmEncoderFactory *arg1 = (faiss::gpu::GpuIcmEncoderFactory *) 0 ;
+  std::vector< int > *arg2 = (std::vector< int > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuIcmEncoderFactory_devices_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIcmEncoderFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIcmEncoderFactory_devices_set" "', argument " "1"" of type '" "faiss::gpu::GpuIcmEncoderFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIcmEncoderFactory * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuIcmEncoderFactory_devices_set" "', argument " "2"" of type '" "std::vector< int > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  if (arg1) (arg1)->devices = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuIcmEncoderFactory_devices_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIcmEncoderFactory *arg1 = (faiss::gpu::GpuIcmEncoderFactory *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< int > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIcmEncoderFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuIcmEncoderFactory_devices_get" "', argument " "1"" of type '" "faiss::gpu::GpuIcmEncoderFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIcmEncoderFactory * >(argp1);
+  result = (std::vector< int > *)& ((arg1)->devices);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuIcmEncoderFactory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuIcmEncoderFactory *arg1 = (faiss::gpu::GpuIcmEncoderFactory *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuIcmEncoderFactory, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuIcmEncoderFactory" "', argument " "1"" of type '" "faiss::gpu::GpuIcmEncoderFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuIcmEncoderFactory * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuIcmEncoderFactory_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuIcmEncoderFactory, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuIcmEncoderFactory_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_downcast_index(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "downcast_index" "', argument " "1"" of type '" "faiss::Index *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)downcast_index(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,0);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,0);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_downcast_VectorTransform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::VectorTransform *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "downcast_VectorTransform" "', argument " "1"" of type '" "faiss::VectorTransform *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::VectorTransform *)downcast_VectorTransform(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::RemapDimensionsTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__RemapDimensionsTransform,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::OPQMatrix *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__OPQMatrix,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::PCAMatrix *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__PCAMatrix,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ITQMatrix *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ITQMatrix,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::RandomRotationMatrix *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__RandomRotationMatrix,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LinearTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LinearTransform,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::NormalizationTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__NormalizationTransform,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::CenteringTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__CenteringTransform,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ITQTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ITQTransform,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::VectorTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__VectorTransform,0);
+    } else
+    /*@SWIG@*/
+    {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_downcast_IndexBinary(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::IndexBinary *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "downcast_IndexBinary" "', argument " "1"" of type '" "faiss::IndexBinary *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinary *)downcast_IndexBinary(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryIVF,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFromFloat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFromFloat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHNSW *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHNSW,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHash,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryMultiHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryMultiHash,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat,0);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinary *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinary,0);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_downcast_InvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::InvertedLists *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "downcast_InvertedLists" "', argument " "1"" of type '" "faiss::InvertedLists *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists *)downcast_InvertedLists(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ArrayInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ArrayInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::BlockInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__BlockInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::OnDiskInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__OnDiskInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::VStackInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__VStackInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::HStackInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__HStackInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MaskedInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MaskedInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::InvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__InvertedLists,0);
+    } else
+    /*@SWIG@*/
+    {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_write_index__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  char *arg2 = (char *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  char *buf2 = 0 ;
+  int alloc2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "write_index" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  res2 = SWIG_AsCharPtrAndSize(swig_obj[1], &buf2, NULL, &alloc2);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "write_index" "', argument " "2"" of type '" "char const *""'");
+  }
+  arg2 = reinterpret_cast< char * >(buf2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::write_index((faiss::Index const *)arg1,(char const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return resultobj;
+fail:
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_write_index__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  FILE *arg2 = (FILE *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "write_index" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_FILE, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "write_index" "', argument " "2"" of type '" "FILE *""'"); 
+  }
+  arg2 = reinterpret_cast< FILE * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::write_index((faiss::Index const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_write_index__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  faiss::IOWriter *arg2 = (faiss::IOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "write_index" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "write_index" "', argument " "2"" of type '" "faiss::IOWriter *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IOWriter * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::write_index((faiss::Index const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_write_index(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "write_index", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_FILE, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_write_index__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IOWriter, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_write_index__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__Index, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      int res = SWIG_AsCharPtrAndSize(argv[1], 0, NULL, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_write_index__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'write_index'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::write_index(faiss::Index const *,char const *)\n"
+    "    faiss::write_index(faiss::Index const *,FILE *)\n"
+    "    faiss::write_index(faiss::Index const *,faiss::IOWriter *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_write_index_binary__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  char *arg2 = (char *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  char *buf2 = 0 ;
+  int alloc2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "write_index_binary" "', argument " "1"" of type '" "faiss::IndexBinary const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  res2 = SWIG_AsCharPtrAndSize(swig_obj[1], &buf2, NULL, &alloc2);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "write_index_binary" "', argument " "2"" of type '" "char const *""'");
+  }
+  arg2 = reinterpret_cast< char * >(buf2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::write_index_binary((faiss::IndexBinary const *)arg1,(char const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return resultobj;
+fail:
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_write_index_binary__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  FILE *arg2 = (FILE *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "write_index_binary" "', argument " "1"" of type '" "faiss::IndexBinary const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_FILE, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "write_index_binary" "', argument " "2"" of type '" "FILE *""'"); 
+  }
+  arg2 = reinterpret_cast< FILE * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::write_index_binary((faiss::IndexBinary const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_write_index_binary__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IndexBinary *arg1 = (faiss::IndexBinary *) 0 ;
+  faiss::IOWriter *arg2 = (faiss::IOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IndexBinary, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "write_index_binary" "', argument " "1"" of type '" "faiss::IndexBinary const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IndexBinary * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "write_index_binary" "', argument " "2"" of type '" "faiss::IOWriter *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IOWriter * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::write_index_binary((faiss::IndexBinary const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_write_index_binary(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "write_index_binary", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinary, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_FILE, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_write_index_binary__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinary, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IOWriter, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_write_index_binary__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IndexBinary, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      int res = SWIG_AsCharPtrAndSize(argv[1], 0, NULL, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_write_index_binary__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'write_index_binary'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::write_index_binary(faiss::IndexBinary const *,char const *)\n"
+    "    faiss::write_index_binary(faiss::IndexBinary const *,FILE *)\n"
+    "    faiss::write_index_binary(faiss::IndexBinary const *,faiss::IOWriter *)\n");
+  return 0;
+}
+
+
+SWIGINTERN int Swig_var_IO_FLAG_READ_ONLY_set(PyObject *) {
+  SWIG_Error(SWIG_AttributeError,"Variable IO_FLAG_READ_ONLY is read-only.");
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_IO_FLAG_READ_ONLY_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_From_int(static_cast< int >(faiss::IO_FLAG_READ_ONLY));
+  return pyobj;
+}
+
+
+SWIGINTERN int Swig_var_IO_FLAG_ONDISK_SAME_DIR_set(PyObject *) {
+  SWIG_Error(SWIG_AttributeError,"Variable IO_FLAG_ONDISK_SAME_DIR is read-only.");
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_IO_FLAG_ONDISK_SAME_DIR_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_From_int(static_cast< int >(faiss::IO_FLAG_ONDISK_SAME_DIR));
+  return pyobj;
+}
+
+
+SWIGINTERN int Swig_var_IO_FLAG_SKIP_IVF_DATA_set(PyObject *) {
+  SWIG_Error(SWIG_AttributeError,"Variable IO_FLAG_SKIP_IVF_DATA is read-only.");
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_IO_FLAG_SKIP_IVF_DATA_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_From_int(static_cast< int >(faiss::IO_FLAG_SKIP_IVF_DATA));
+  return pyobj;
+}
+
+
+SWIGINTERN int Swig_var_IO_FLAG_MMAP_set(PyObject *) {
+  SWIG_Error(SWIG_AttributeError,"Variable IO_FLAG_MMAP is read-only.");
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_IO_FLAG_MMAP_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_From_int(static_cast< int >(faiss::IO_FLAG_MMAP));
+  return pyobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  char *arg1 = (char *) 0 ;
+  int arg2 ;
+  int res1 ;
+  char *buf1 = 0 ;
+  int alloc1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_AsCharPtrAndSize(swig_obj[0], &buf1, NULL, &alloc1);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_index" "', argument " "1"" of type '" "char const *""'");
+  }
+  arg1 = reinterpret_cast< char * >(buf1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "read_index" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::read_index((char const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return resultobj;
+fail:
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  char *arg1 = (char *) 0 ;
+  int res1 ;
+  char *buf1 = 0 ;
+  int alloc1 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_AsCharPtrAndSize(swig_obj[0], &buf1, NULL, &alloc1);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_index" "', argument " "1"" of type '" "char const *""'");
+  }
+  arg1 = reinterpret_cast< char * >(buf1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::read_index((char const *)arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return resultobj;
+fail:
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  FILE *arg1 = (FILE *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_FILE, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_index" "', argument " "1"" of type '" "FILE *""'"); 
+  }
+  arg1 = reinterpret_cast< FILE * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "read_index" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::read_index(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  FILE *arg1 = (FILE *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_FILE, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_index" "', argument " "1"" of type '" "FILE *""'"); 
+  }
+  arg1 = reinterpret_cast< FILE * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::read_index(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_index" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "read_index" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::read_index(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_index" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::read_index(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "read_index", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_FILE, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_read_index__SWIG_3(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IOReader, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_read_index__SWIG_5(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    int res = SWIG_AsCharPtrAndSize(argv[0], 0, NULL, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_read_index__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IOReader, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_read_index__SWIG_4(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_FILE, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_read_index__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    int res = SWIG_AsCharPtrAndSize(argv[0], 0, NULL, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_read_index__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'read_index'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::read_index(char const *,int)\n"
+    "    faiss::read_index(char const *)\n"
+    "    faiss::read_index(FILE *,int)\n"
+    "    faiss::read_index(FILE *)\n"
+    "    faiss::read_index(faiss::IOReader *,int)\n"
+    "    faiss::read_index(faiss::IOReader *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index_binary__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  char *arg1 = (char *) 0 ;
+  int arg2 ;
+  int res1 ;
+  char *buf1 = 0 ;
+  int alloc1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexBinary *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_AsCharPtrAndSize(swig_obj[0], &buf1, NULL, &alloc1);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_index_binary" "', argument " "1"" of type '" "char const *""'");
+  }
+  arg1 = reinterpret_cast< char * >(buf1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "read_index_binary" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinary *)faiss::read_index_binary((char const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFromFloat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFromFloat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHNSW *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHNSW,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryMultiHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryMultiHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinary *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinary,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return resultobj;
+fail:
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index_binary__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  char *arg1 = (char *) 0 ;
+  int res1 ;
+  char *buf1 = 0 ;
+  int alloc1 = 0 ;
+  faiss::IndexBinary *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_AsCharPtrAndSize(swig_obj[0], &buf1, NULL, &alloc1);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_index_binary" "', argument " "1"" of type '" "char const *""'");
+  }
+  arg1 = reinterpret_cast< char * >(buf1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinary *)faiss::read_index_binary((char const *)arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFromFloat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFromFloat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHNSW *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHNSW,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryMultiHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryMultiHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinary *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinary,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return resultobj;
+fail:
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index_binary__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  FILE *arg1 = (FILE *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexBinary *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_FILE, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_index_binary" "', argument " "1"" of type '" "FILE *""'"); 
+  }
+  arg1 = reinterpret_cast< FILE * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "read_index_binary" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinary *)faiss::read_index_binary(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFromFloat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFromFloat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHNSW *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHNSW,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryMultiHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryMultiHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinary *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinary,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index_binary__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  FILE *arg1 = (FILE *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexBinary *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_FILE, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_index_binary" "', argument " "1"" of type '" "FILE *""'"); 
+  }
+  arg1 = reinterpret_cast< FILE * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinary *)faiss::read_index_binary(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFromFloat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFromFloat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHNSW *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHNSW,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryMultiHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryMultiHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinary *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinary,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index_binary__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::IndexBinary *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_index_binary" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "read_index_binary" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinary *)faiss::read_index_binary(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFromFloat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFromFloat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHNSW *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHNSW,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryMultiHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryMultiHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinary *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinary,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index_binary__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::IndexBinary *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_index_binary" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinary *)faiss::read_index_binary(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFromFloat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFromFloat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHNSW *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHNSW,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryMultiHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryMultiHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinary *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinary,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_index_binary(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "read_index_binary", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_FILE, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_read_index_binary__SWIG_3(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IOReader, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_read_index_binary__SWIG_5(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    int res = SWIG_AsCharPtrAndSize(argv[0], 0, NULL, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_read_index_binary__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IOReader, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_read_index_binary__SWIG_4(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_FILE, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_read_index_binary__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    int res = SWIG_AsCharPtrAndSize(argv[0], 0, NULL, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_read_index_binary__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'read_index_binary'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::read_index_binary(char const *,int)\n"
+    "    faiss::read_index_binary(char const *)\n"
+    "    faiss::read_index_binary(FILE *,int)\n"
+    "    faiss::read_index_binary(FILE *)\n"
+    "    faiss::read_index_binary(faiss::IOReader *,int)\n"
+    "    faiss::read_index_binary(faiss::IOReader *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_write_VectorTransform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::VectorTransform *arg1 = (faiss::VectorTransform *) 0 ;
+  char *arg2 = (char *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  char *buf2 = 0 ;
+  int alloc2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "write_VectorTransform", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "write_VectorTransform" "', argument " "1"" of type '" "faiss::VectorTransform const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::VectorTransform * >(argp1);
+  res2 = SWIG_AsCharPtrAndSize(swig_obj[1], &buf2, NULL, &alloc2);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "write_VectorTransform" "', argument " "2"" of type '" "char const *""'");
+  }
+  arg2 = reinterpret_cast< char * >(buf2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::write_VectorTransform((faiss::VectorTransform const *)arg1,(char const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return resultobj;
+fail:
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_VectorTransform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  char *arg1 = (char *) 0 ;
+  int res1 ;
+  char *buf1 = 0 ;
+  int alloc1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::VectorTransform *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_AsCharPtrAndSize(swig_obj[0], &buf1, NULL, &alloc1);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_VectorTransform" "', argument " "1"" of type '" "char const *""'");
+  }
+  arg1 = reinterpret_cast< char * >(buf1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::VectorTransform *)faiss::read_VectorTransform((char const *)arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::RemapDimensionsTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__RemapDimensionsTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::OPQMatrix *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__OPQMatrix,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::PCAMatrix *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__PCAMatrix,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ITQMatrix *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ITQMatrix,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::RandomRotationMatrix *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__RandomRotationMatrix,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LinearTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LinearTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::NormalizationTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__NormalizationTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::CenteringTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__CenteringTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ITQTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ITQTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::VectorTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__VectorTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    {
+      assert(false);
+    }
+  }
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return resultobj;
+fail:
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_ProductQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  char *arg1 = (char *) 0 ;
+  int res1 ;
+  char *buf1 = 0 ;
+  int alloc1 = 0 ;
+  faiss::ProductQuantizer *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_AsCharPtrAndSize(swig_obj[0], &buf1, NULL, &alloc1);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_ProductQuantizer" "', argument " "1"" of type '" "char const *""'");
+  }
+  arg1 = reinterpret_cast< char * >(buf1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ProductQuantizer *)faiss::read_ProductQuantizer((char const *)arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProductQuantizer, SWIG_POINTER_OWN |  0 );
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return resultobj;
+fail:
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_ProductQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::ProductQuantizer *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_ProductQuantizer" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ProductQuantizer *)faiss::read_ProductQuantizer(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ProductQuantizer, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_ProductQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "read_ProductQuantizer", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IOReader, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_read_ProductQuantizer__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    int res = SWIG_AsCharPtrAndSize(argv[0], 0, NULL, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_read_ProductQuantizer__SWIG_0(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'read_ProductQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::read_ProductQuantizer(char const *)\n"
+    "    faiss::read_ProductQuantizer(faiss::IOReader *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_write_ProductQuantizer__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  char *arg2 = (char *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  char *buf2 = 0 ;
+  int alloc2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "write_ProductQuantizer" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_AsCharPtrAndSize(swig_obj[1], &buf2, NULL, &alloc2);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "write_ProductQuantizer" "', argument " "2"" of type '" "char const *""'");
+  }
+  arg2 = reinterpret_cast< char * >(buf2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::write_ProductQuantizer((faiss::ProductQuantizer const *)arg1,(char const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return resultobj;
+fail:
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_write_ProductQuantizer__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ProductQuantizer *arg1 = (faiss::ProductQuantizer *) 0 ;
+  faiss::IOWriter *arg2 = (faiss::IOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ProductQuantizer, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "write_ProductQuantizer" "', argument " "1"" of type '" "faiss::ProductQuantizer const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ProductQuantizer * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "write_ProductQuantizer" "', argument " "2"" of type '" "faiss::IOWriter *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IOWriter * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::write_ProductQuantizer((faiss::ProductQuantizer const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_write_ProductQuantizer(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "write_ProductQuantizer", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ProductQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__IOWriter, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_write_ProductQuantizer__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ProductQuantizer, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      int res = SWIG_AsCharPtrAndSize(argv[1], 0, NULL, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_write_ProductQuantizer__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'write_ProductQuantizer'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::write_ProductQuantizer(faiss::ProductQuantizer const *,char const *)\n"
+    "    faiss::write_ProductQuantizer(faiss::ProductQuantizer const *,faiss::IOWriter *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_write_InvertedLists(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::InvertedLists *arg1 = (faiss::InvertedLists *) 0 ;
+  faiss::IOWriter *arg2 = (faiss::IOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "write_InvertedLists", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__InvertedLists, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "write_InvertedLists" "', argument " "1"" of type '" "faiss::InvertedLists const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::InvertedLists * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "write_InvertedLists" "', argument " "2"" of type '" "faiss::IOWriter *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IOWriter * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      faiss::write_InvertedLists((faiss::InvertedLists const *)arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_InvertedLists__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  faiss::InvertedLists *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_InvertedLists" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "read_InvertedLists" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists *)faiss::read_InvertedLists(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ArrayInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ArrayInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::BlockInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__BlockInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::OnDiskInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__OnDiskInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::VStackInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__VStackInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::HStackInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__HStackInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MaskedInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MaskedInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::InvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__InvertedLists,0);
+    } else
+    /*@SWIG@*/
+    {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_InvertedLists__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::IOReader *arg1 = (faiss::IOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  faiss::InvertedLists *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "read_InvertedLists" "', argument " "1"" of type '" "faiss::IOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IOReader * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::InvertedLists *)faiss::read_InvertedLists(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ArrayInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ArrayInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::BlockInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__BlockInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::OnDiskInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__OnDiskInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::VStackInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__VStackInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::HStackInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__HStackInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MaskedInvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MaskedInvertedLists,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::InvertedLists *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__InvertedLists,0);
+    } else
+    /*@SWIG@*/
+    {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_read_InvertedLists(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "read_InvertedLists", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IOReader, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_read_InvertedLists__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__IOReader, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_read_InvertedLists__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'read_InvertedLists'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::read_InvertedLists(faiss::IOReader *,int)\n"
+    "    faiss::read_InvertedLists(faiss::IOReader *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_clone_index(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "clone_index" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::clone_index((faiss::Index const *)arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Cloner_clone_VectorTransform(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Cloner *arg1 = (faiss::Cloner *) 0 ;
+  faiss::VectorTransform *arg2 = (faiss::VectorTransform *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::VectorTransform *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Cloner_clone_VectorTransform", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Cloner, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Cloner_clone_VectorTransform" "', argument " "1"" of type '" "faiss::Cloner *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Cloner * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__VectorTransform, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Cloner_clone_VectorTransform" "', argument " "2"" of type '" "faiss::VectorTransform const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::VectorTransform * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::VectorTransform *)(arg1)->clone_VectorTransform((faiss::VectorTransform const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::RemapDimensionsTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__RemapDimensionsTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::OPQMatrix *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__OPQMatrix,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::PCAMatrix *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__PCAMatrix,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ITQMatrix *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ITQMatrix,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::RandomRotationMatrix *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__RandomRotationMatrix,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LinearTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LinearTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::NormalizationTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__NormalizationTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::CenteringTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__CenteringTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ITQTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ITQTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::VectorTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__VectorTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Cloner_clone_Index(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Cloner *arg1 = (faiss::Cloner *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::Index *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Cloner_clone_Index", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Cloner, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Cloner_clone_Index" "', argument " "1"" of type '" "faiss::Cloner *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Cloner * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Cloner_clone_Index" "', argument " "2"" of type '" "faiss::Index const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)(arg1)->clone_Index((faiss::Index const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,0);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,0);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_Cloner_clone_IndexIVF(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Cloner *arg1 = (faiss::Cloner *) 0 ;
+  faiss::IndexIVF *arg2 = (faiss::IndexIVF *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::IndexIVF *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "Cloner_clone_IndexIVF", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Cloner, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Cloner_clone_IndexIVF" "', argument " "1"" of type '" "faiss::Cloner *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Cloner * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "Cloner_clone_IndexIVF" "', argument " "2"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVF * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexIVF *)(arg1)->clone_IndexIVF((faiss::IndexIVF const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_Cloner(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Cloner *arg1 = (faiss::Cloner *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Cloner, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_Cloner" "', argument " "1"" of type '" "faiss::Cloner *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Cloner * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_Cloner(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Cloner *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_Cloner", 0, 0, 0)) SWIG_fail;
+  result = (faiss::Cloner *)new faiss::Cloner();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__Cloner, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *Cloner_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__Cloner, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *Cloner_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_AutoTuneCriterion_nq_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion *arg1 = (faiss::AutoTuneCriterion *) 0 ;
+  faiss::AutoTuneCriterion::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AutoTuneCriterion_nq_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AutoTuneCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AutoTuneCriterion_nq_set" "', argument " "1"" of type '" "faiss::AutoTuneCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AutoTuneCriterion_nq_set" "', argument " "2"" of type '" "faiss::AutoTuneCriterion::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::AutoTuneCriterion::idx_t >(val2);
+  if (arg1) (arg1)->nq = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AutoTuneCriterion_nq_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion *arg1 = (faiss::AutoTuneCriterion *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AutoTuneCriterion::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AutoTuneCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AutoTuneCriterion_nq_get" "', argument " "1"" of type '" "faiss::AutoTuneCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp1);
+  result = (faiss::AutoTuneCriterion::idx_t) ((arg1)->nq);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AutoTuneCriterion_nnn_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion *arg1 = (faiss::AutoTuneCriterion *) 0 ;
+  faiss::AutoTuneCriterion::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AutoTuneCriterion_nnn_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AutoTuneCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AutoTuneCriterion_nnn_set" "', argument " "1"" of type '" "faiss::AutoTuneCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AutoTuneCriterion_nnn_set" "', argument " "2"" of type '" "faiss::AutoTuneCriterion::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::AutoTuneCriterion::idx_t >(val2);
+  if (arg1) (arg1)->nnn = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AutoTuneCriterion_nnn_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion *arg1 = (faiss::AutoTuneCriterion *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AutoTuneCriterion::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AutoTuneCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AutoTuneCriterion_nnn_get" "', argument " "1"" of type '" "faiss::AutoTuneCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp1);
+  result = (faiss::AutoTuneCriterion::idx_t) ((arg1)->nnn);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AutoTuneCriterion_gt_nnn_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion *arg1 = (faiss::AutoTuneCriterion *) 0 ;
+  faiss::AutoTuneCriterion::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AutoTuneCriterion_gt_nnn_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AutoTuneCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AutoTuneCriterion_gt_nnn_set" "', argument " "1"" of type '" "faiss::AutoTuneCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AutoTuneCriterion_gt_nnn_set" "', argument " "2"" of type '" "faiss::AutoTuneCriterion::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::AutoTuneCriterion::idx_t >(val2);
+  if (arg1) (arg1)->gt_nnn = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AutoTuneCriterion_gt_nnn_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion *arg1 = (faiss::AutoTuneCriterion *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AutoTuneCriterion::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AutoTuneCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AutoTuneCriterion_gt_nnn_get" "', argument " "1"" of type '" "faiss::AutoTuneCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp1);
+  result = (faiss::AutoTuneCriterion::idx_t) ((arg1)->gt_nnn);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AutoTuneCriterion_gt_D_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion *arg1 = (faiss::AutoTuneCriterion *) 0 ;
+  std::vector< float > *arg2 = (std::vector< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AutoTuneCriterion_gt_D_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AutoTuneCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AutoTuneCriterion_gt_D_set" "', argument " "1"" of type '" "faiss::AutoTuneCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AutoTuneCriterion_gt_D_set" "', argument " "2"" of type '" "std::vector< float > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< float > * >(argp2);
+  if (arg1) (arg1)->gt_D = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AutoTuneCriterion_gt_D_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion *arg1 = (faiss::AutoTuneCriterion *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< float > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AutoTuneCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AutoTuneCriterion_gt_D_get" "', argument " "1"" of type '" "faiss::AutoTuneCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp1);
+  result = (std::vector< float > *)& ((arg1)->gt_D);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_float_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AutoTuneCriterion_gt_I_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion *arg1 = (faiss::AutoTuneCriterion *) 0 ;
+  std::vector< faiss::AutoTuneCriterion::idx_t > *arg2 = (std::vector< faiss::AutoTuneCriterion::idx_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AutoTuneCriterion_gt_I_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AutoTuneCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AutoTuneCriterion_gt_I_set" "', argument " "1"" of type '" "faiss::AutoTuneCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AutoTuneCriterion_gt_I_set" "', argument " "2"" of type '" "std::vector< faiss::AutoTuneCriterion::idx_t > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::AutoTuneCriterion::idx_t > * >(argp2);
+  if (arg1) (arg1)->gt_I = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AutoTuneCriterion_gt_I_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion *arg1 = (faiss::AutoTuneCriterion *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::AutoTuneCriterion::idx_t > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AutoTuneCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AutoTuneCriterion_gt_I_get" "', argument " "1"" of type '" "faiss::AutoTuneCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp1);
+  result = (std::vector< faiss::AutoTuneCriterion::idx_t > *)& ((arg1)->gt_I);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_long_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AutoTuneCriterion_set_groundtruth(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion *arg1 = (faiss::AutoTuneCriterion *) 0 ;
+  int arg2 ;
+  float *arg3 = (float *) 0 ;
+  faiss::AutoTuneCriterion::idx_t *arg4 = (faiss::AutoTuneCriterion::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AutoTuneCriterion_set_groundtruth", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AutoTuneCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AutoTuneCriterion_set_groundtruth" "', argument " "1"" of type '" "faiss::AutoTuneCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AutoTuneCriterion_set_groundtruth" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AutoTuneCriterion_set_groundtruth" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "AutoTuneCriterion_set_groundtruth" "', argument " "4"" of type '" "faiss::AutoTuneCriterion::idx_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::AutoTuneCriterion::idx_t * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->set_groundtruth(arg2,(float const *)arg3,(faiss::AutoTuneCriterion::idx_t const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AutoTuneCriterion_evaluate(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion *arg1 = (faiss::AutoTuneCriterion *) 0 ;
+  float *arg2 = (float *) 0 ;
+  faiss::AutoTuneCriterion::idx_t *arg3 = (faiss::AutoTuneCriterion::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AutoTuneCriterion_evaluate", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AutoTuneCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AutoTuneCriterion_evaluate" "', argument " "1"" of type '" "faiss::AutoTuneCriterion const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AutoTuneCriterion_evaluate" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "AutoTuneCriterion_evaluate" "', argument " "3"" of type '" "faiss::AutoTuneCriterion::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::AutoTuneCriterion::idx_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)((faiss::AutoTuneCriterion const *)arg1)->evaluate((float const *)arg2,(faiss::AutoTuneCriterion::idx_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_AutoTuneCriterion(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion *arg1 = (faiss::AutoTuneCriterion *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AutoTuneCriterion, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_AutoTuneCriterion" "', argument " "1"" of type '" "faiss::AutoTuneCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *AutoTuneCriterion_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__AutoTuneCriterion, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *_wrap_OneRecallAtRCriterion_R_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OneRecallAtRCriterion *arg1 = (faiss::OneRecallAtRCriterion *) 0 ;
+  faiss::AutoTuneCriterion::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OneRecallAtRCriterion_R_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OneRecallAtRCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OneRecallAtRCriterion_R_set" "', argument " "1"" of type '" "faiss::OneRecallAtRCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OneRecallAtRCriterion * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OneRecallAtRCriterion_R_set" "', argument " "2"" of type '" "faiss::AutoTuneCriterion::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::AutoTuneCriterion::idx_t >(val2);
+  if (arg1) (arg1)->R = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OneRecallAtRCriterion_R_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OneRecallAtRCriterion *arg1 = (faiss::OneRecallAtRCriterion *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AutoTuneCriterion::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OneRecallAtRCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OneRecallAtRCriterion_R_get" "', argument " "1"" of type '" "faiss::OneRecallAtRCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OneRecallAtRCriterion * >(argp1);
+  result = (faiss::AutoTuneCriterion::idx_t) ((arg1)->R);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_OneRecallAtRCriterion(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion::idx_t arg1 ;
+  faiss::AutoTuneCriterion::idx_t arg2 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::OneRecallAtRCriterion *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_OneRecallAtRCriterion", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_OneRecallAtRCriterion" "', argument " "1"" of type '" "faiss::AutoTuneCriterion::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::AutoTuneCriterion::idx_t >(val1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_OneRecallAtRCriterion" "', argument " "2"" of type '" "faiss::AutoTuneCriterion::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::AutoTuneCriterion::idx_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::OneRecallAtRCriterion *)new faiss::OneRecallAtRCriterion(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__OneRecallAtRCriterion, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OneRecallAtRCriterion_evaluate(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OneRecallAtRCriterion *arg1 = (faiss::OneRecallAtRCriterion *) 0 ;
+  float *arg2 = (float *) 0 ;
+  faiss::AutoTuneCriterion::idx_t *arg3 = (faiss::AutoTuneCriterion::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OneRecallAtRCriterion_evaluate", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OneRecallAtRCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OneRecallAtRCriterion_evaluate" "', argument " "1"" of type '" "faiss::OneRecallAtRCriterion const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OneRecallAtRCriterion * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OneRecallAtRCriterion_evaluate" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "OneRecallAtRCriterion_evaluate" "', argument " "3"" of type '" "faiss::AutoTuneCriterion::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::AutoTuneCriterion::idx_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)((faiss::OneRecallAtRCriterion const *)arg1)->evaluate((float const *)arg2,(faiss::AutoTuneCriterion::idx_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_OneRecallAtRCriterion(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OneRecallAtRCriterion *arg1 = (faiss::OneRecallAtRCriterion *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OneRecallAtRCriterion, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_OneRecallAtRCriterion" "', argument " "1"" of type '" "faiss::OneRecallAtRCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OneRecallAtRCriterion * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *OneRecallAtRCriterion_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__OneRecallAtRCriterion, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *OneRecallAtRCriterion_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_IntersectionCriterion_R_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IntersectionCriterion *arg1 = (faiss::IntersectionCriterion *) 0 ;
+  faiss::AutoTuneCriterion::idx_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IntersectionCriterion_R_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IntersectionCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IntersectionCriterion_R_set" "', argument " "1"" of type '" "faiss::IntersectionCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IntersectionCriterion * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "IntersectionCriterion_R_set" "', argument " "2"" of type '" "faiss::AutoTuneCriterion::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::AutoTuneCriterion::idx_t >(val2);
+  if (arg1) (arg1)->R = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IntersectionCriterion_R_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IntersectionCriterion *arg1 = (faiss::IntersectionCriterion *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AutoTuneCriterion::idx_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IntersectionCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IntersectionCriterion_R_get" "', argument " "1"" of type '" "faiss::IntersectionCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IntersectionCriterion * >(argp1);
+  result = (faiss::AutoTuneCriterion::idx_t) ((arg1)->R);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_IntersectionCriterion(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AutoTuneCriterion::idx_t arg1 ;
+  faiss::AutoTuneCriterion::idx_t arg2 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::IntersectionCriterion *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_IntersectionCriterion", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_IntersectionCriterion" "', argument " "1"" of type '" "faiss::AutoTuneCriterion::idx_t""'");
+  } 
+  arg1 = static_cast< faiss::AutoTuneCriterion::idx_t >(val1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_IntersectionCriterion" "', argument " "2"" of type '" "faiss::AutoTuneCriterion::idx_t""'");
+  } 
+  arg2 = static_cast< faiss::AutoTuneCriterion::idx_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IntersectionCriterion *)new faiss::IntersectionCriterion(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__IntersectionCriterion, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_IntersectionCriterion_evaluate(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IntersectionCriterion *arg1 = (faiss::IntersectionCriterion *) 0 ;
+  float *arg2 = (float *) 0 ;
+  faiss::AutoTuneCriterion::idx_t *arg3 = (faiss::AutoTuneCriterion::idx_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "IntersectionCriterion_evaluate", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IntersectionCriterion, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "IntersectionCriterion_evaluate" "', argument " "1"" of type '" "faiss::IntersectionCriterion const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IntersectionCriterion * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "IntersectionCriterion_evaluate" "', argument " "2"" of type '" "float const *""'"); 
+  }
+  arg2 = reinterpret_cast< float * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "IntersectionCriterion_evaluate" "', argument " "3"" of type '" "faiss::AutoTuneCriterion::idx_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::AutoTuneCriterion::idx_t * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)((faiss::IntersectionCriterion const *)arg1)->evaluate((float const *)arg2,(faiss::AutoTuneCriterion::idx_t const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_IntersectionCriterion(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::IntersectionCriterion *arg1 = (faiss::IntersectionCriterion *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__IntersectionCriterion, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_IntersectionCriterion" "', argument " "1"" of type '" "faiss::IntersectionCriterion *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::IntersectionCriterion * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *IntersectionCriterion_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__IntersectionCriterion, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *IntersectionCriterion_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_OperatingPoint_perf_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoint *arg1 = (faiss::OperatingPoint *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OperatingPoint_perf_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoint, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoint_perf_set" "', argument " "1"" of type '" "faiss::OperatingPoint *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoint * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OperatingPoint_perf_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->perf = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoint_perf_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoint *arg1 = (faiss::OperatingPoint *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoint, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoint_perf_get" "', argument " "1"" of type '" "faiss::OperatingPoint *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoint * >(argp1);
+  result = (double) ((arg1)->perf);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoint_t_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoint *arg1 = (faiss::OperatingPoint *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OperatingPoint_t_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoint, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoint_t_set" "', argument " "1"" of type '" "faiss::OperatingPoint *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoint * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OperatingPoint_t_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->t = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoint_t_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoint *arg1 = (faiss::OperatingPoint *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoint, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoint_t_get" "', argument " "1"" of type '" "faiss::OperatingPoint *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoint * >(argp1);
+  result = (double) ((arg1)->t);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoint_key_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoint *arg1 = (faiss::OperatingPoint *) 0 ;
+  std::string *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 = SWIG_OLDOBJ ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OperatingPoint_key_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoint, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoint_key_set" "', argument " "1"" of type '" "faiss::OperatingPoint *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoint * >(argp1);
+  {
+    std::string *ptr = (std::string *)0;
+    res2 = SWIG_AsPtr_std_string(swig_obj[1], &ptr);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OperatingPoint_key_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "OperatingPoint_key_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    arg2 = ptr;
+  }
+  if (arg1) (arg1)->key = *arg2;
+  resultobj = SWIG_Py_Void();
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoint_key_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoint *arg1 = (faiss::OperatingPoint *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoint, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoint_key_get" "', argument " "1"" of type '" "faiss::OperatingPoint *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoint * >(argp1);
+  result = (std::string *) & ((arg1)->key);
+  resultobj = SWIG_From_std_string(static_cast< std::string >(*result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoint_cno_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoint *arg1 = (faiss::OperatingPoint *) 0 ;
+  int64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OperatingPoint_cno_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoint, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoint_cno_set" "', argument " "1"" of type '" "faiss::OperatingPoint *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoint * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OperatingPoint_cno_set" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  if (arg1) (arg1)->cno = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoint_cno_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoint *arg1 = (faiss::OperatingPoint *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int64_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoint, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoint_cno_get" "', argument " "1"" of type '" "faiss::OperatingPoint *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoint * >(argp1);
+  result = (int64_t) ((arg1)->cno);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_OperatingPoint(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoint *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_OperatingPoint", 0, 0, 0)) SWIG_fail;
+  result = (faiss::OperatingPoint *)new faiss::OperatingPoint();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__OperatingPoint, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_OperatingPoint(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoint *arg1 = (faiss::OperatingPoint *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoint, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_OperatingPoint" "', argument " "1"" of type '" "faiss::OperatingPoint *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoint * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *OperatingPoint_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__OperatingPoint, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *OperatingPoint_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_all_pts_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  std::vector< faiss::OperatingPoint > *arg2 = (std::vector< faiss::OperatingPoint > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OperatingPoints_all_pts_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_all_pts_set" "', argument " "1"" of type '" "faiss::OperatingPoints *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OperatingPoints_all_pts_set" "', argument " "2"" of type '" "std::vector< faiss::OperatingPoint > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::OperatingPoint > * >(argp2);
+  if (arg1) (arg1)->all_pts = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_all_pts_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::OperatingPoint > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_all_pts_get" "', argument " "1"" of type '" "faiss::OperatingPoints *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  result = (std::vector< faiss::OperatingPoint > *)& ((arg1)->all_pts);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_optimal_pts_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  std::vector< faiss::OperatingPoint > *arg2 = (std::vector< faiss::OperatingPoint > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OperatingPoints_optimal_pts_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_optimal_pts_set" "', argument " "1"" of type '" "faiss::OperatingPoints *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OperatingPoints_optimal_pts_set" "', argument " "2"" of type '" "std::vector< faiss::OperatingPoint > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::OperatingPoint > * >(argp2);
+  if (arg1) (arg1)->optimal_pts = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_optimal_pts_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::OperatingPoint > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_optimal_pts_get" "', argument " "1"" of type '" "faiss::OperatingPoints *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  result = (std::vector< faiss::OperatingPoint > *)& ((arg1)->optimal_pts);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__OperatingPoint_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_OperatingPoints(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_OperatingPoints", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::OperatingPoints *)new faiss::OperatingPoints();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__OperatingPoints, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_merge_with__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  faiss::OperatingPoints *arg2 = 0 ;
+  std::string *arg3 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int res3 = SWIG_OLDOBJ ;
+  int result;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_merge_with" "', argument " "1"" of type '" "faiss::OperatingPoints *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__OperatingPoints,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OperatingPoints_merge_with" "', argument " "2"" of type '" "faiss::OperatingPoints const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "OperatingPoints_merge_with" "', argument " "2"" of type '" "faiss::OperatingPoints const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::OperatingPoints * >(argp2);
+  {
+    std::string *ptr = (std::string *)0;
+    res3 = SWIG_AsPtr_std_string(swig_obj[2], &ptr);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "OperatingPoints_merge_with" "', argument " "3"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "OperatingPoints_merge_with" "', argument " "3"" of type '" "std::string const &""'"); 
+    }
+    arg3 = ptr;
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)(arg1)->merge_with((faiss::OperatingPoints const &)*arg2,(std::string const &)*arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  if (SWIG_IsNewObj(res3)) delete arg3;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res3)) delete arg3;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_merge_with__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  faiss::OperatingPoints *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int result;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_merge_with" "', argument " "1"" of type '" "faiss::OperatingPoints *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__OperatingPoints,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OperatingPoints_merge_with" "', argument " "2"" of type '" "faiss::OperatingPoints const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "OperatingPoints_merge_with" "', argument " "2"" of type '" "faiss::OperatingPoints const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::OperatingPoints * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (int)(arg1)->merge_with((faiss::OperatingPoints const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_merge_with(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "OperatingPoints_merge_with", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__OperatingPoints, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_faiss__OperatingPoints, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_OperatingPoints_merge_with__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__OperatingPoints, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_faiss__OperatingPoints, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        int res = SWIG_AsPtr_std_string(argv[2], (std::string**)(0));
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_OperatingPoints_merge_with__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'OperatingPoints_merge_with'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::OperatingPoints::merge_with(faiss::OperatingPoints const &,std::string const &)\n"
+    "    faiss::OperatingPoints::merge_with(faiss::OperatingPoints const &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_clear" "', argument " "1"" of type '" "faiss::OperatingPoints *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->clear();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_add__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  double arg2 ;
+  double arg3 ;
+  std::string *arg4 = 0 ;
+  size_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  double val3 ;
+  int ecode3 = 0 ;
+  int res4 = SWIG_OLDOBJ ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  bool result;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_add" "', argument " "1"" of type '" "faiss::OperatingPoints *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OperatingPoints_add" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  ecode3 = SWIG_AsVal_double(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "OperatingPoints_add" "', argument " "3"" of type '" "double""'");
+  } 
+  arg3 = static_cast< double >(val3);
+  {
+    std::string *ptr = (std::string *)0;
+    res4 = SWIG_AsPtr_std_string(swig_obj[3], &ptr);
+    if (!SWIG_IsOK(res4)) {
+      SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "OperatingPoints_add" "', argument " "4"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "OperatingPoints_add" "', argument " "4"" of type '" "std::string const &""'"); 
+    }
+    arg4 = ptr;
+  }
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "OperatingPoints_add" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)(arg1)->add(arg2,arg3,(std::string const &)*arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  if (SWIG_IsNewObj(res4)) delete arg4;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res4)) delete arg4;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_add__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  double arg2 ;
+  double arg3 ;
+  std::string *arg4 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  double val3 ;
+  int ecode3 = 0 ;
+  int res4 = SWIG_OLDOBJ ;
+  bool result;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_add" "', argument " "1"" of type '" "faiss::OperatingPoints *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OperatingPoints_add" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  ecode3 = SWIG_AsVal_double(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "OperatingPoints_add" "', argument " "3"" of type '" "double""'");
+  } 
+  arg3 = static_cast< double >(val3);
+  {
+    std::string *ptr = (std::string *)0;
+    res4 = SWIG_AsPtr_std_string(swig_obj[3], &ptr);
+    if (!SWIG_IsOK(res4)) {
+      SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "OperatingPoints_add" "', argument " "4"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "OperatingPoints_add" "', argument " "4"" of type '" "std::string const &""'"); 
+    }
+    arg4 = ptr;
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)(arg1)->add(arg2,arg3,(std::string const &)*arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  if (SWIG_IsNewObj(res4)) delete arg4;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res4)) delete arg4;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_add(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[6] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "OperatingPoints_add", 0, 5, argv))) SWIG_fail;
+  --argc;
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__OperatingPoints, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_double(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_double(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          int res = SWIG_AsPtr_std_string(argv[3], (std::string**)(0));
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_OperatingPoints_add__SWIG_1(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__OperatingPoints, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_double(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        {
+          int res = SWIG_AsVal_double(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          int res = SWIG_AsPtr_std_string(argv[3], (std::string**)(0));
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_OperatingPoints_add__SWIG_0(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'OperatingPoints_add'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::OperatingPoints::add(double,double,std::string const &,size_t)\n"
+    "    faiss::OperatingPoints::add(double,double,std::string const &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_t_for_perf(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  double result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OperatingPoints_t_for_perf", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_t_for_perf" "', argument " "1"" of type '" "faiss::OperatingPoints const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OperatingPoints_t_for_perf" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (double)((faiss::OperatingPoints const *)arg1)->t_for_perf(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_display__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_display" "', argument " "1"" of type '" "faiss::OperatingPoints const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "OperatingPoints_display" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::OperatingPoints const *)arg1)->display(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_display__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_display" "', argument " "1"" of type '" "faiss::OperatingPoints const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::OperatingPoints const *)arg1)->display();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_display(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "OperatingPoints_display", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__OperatingPoints, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_OperatingPoints_display__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__OperatingPoints, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_bool(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_OperatingPoints_display__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'OperatingPoints_display'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::OperatingPoints::display(bool) const\n"
+    "    faiss::OperatingPoints::display() const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_all_to_gnuplot(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  char *arg2 = (char *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  char *buf2 = 0 ;
+  int alloc2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OperatingPoints_all_to_gnuplot", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_all_to_gnuplot" "', argument " "1"" of type '" "faiss::OperatingPoints const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  res2 = SWIG_AsCharPtrAndSize(swig_obj[1], &buf2, NULL, &alloc2);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OperatingPoints_all_to_gnuplot" "', argument " "2"" of type '" "char const *""'");
+  }
+  arg2 = reinterpret_cast< char * >(buf2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::OperatingPoints const *)arg1)->all_to_gnuplot((char const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return resultobj;
+fail:
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_OperatingPoints_optimal_to_gnuplot(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  char *arg2 = (char *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  char *buf2 = 0 ;
+  int alloc2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "OperatingPoints_optimal_to_gnuplot", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "OperatingPoints_optimal_to_gnuplot" "', argument " "1"" of type '" "faiss::OperatingPoints const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  res2 = SWIG_AsCharPtrAndSize(swig_obj[1], &buf2, NULL, &alloc2);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "OperatingPoints_optimal_to_gnuplot" "', argument " "2"" of type '" "char const *""'");
+  }
+  arg2 = reinterpret_cast< char * >(buf2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::OperatingPoints const *)arg1)->optimal_to_gnuplot((char const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return resultobj;
+fail:
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_OperatingPoints(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::OperatingPoints *arg1 = (faiss::OperatingPoints *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__OperatingPoints, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_OperatingPoints" "', argument " "1"" of type '" "faiss::OperatingPoints *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::OperatingPoints * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *OperatingPoints_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__OperatingPoints, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *OperatingPoints_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ParameterRange_name_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterRange *arg1 = (faiss::ParameterRange *) 0 ;
+  std::string *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 = SWIG_OLDOBJ ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterRange_name_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterRange, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterRange_name_set" "', argument " "1"" of type '" "faiss::ParameterRange *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterRange * >(argp1);
+  {
+    std::string *ptr = (std::string *)0;
+    res2 = SWIG_AsPtr_std_string(swig_obj[1], &ptr);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ParameterRange_name_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "ParameterRange_name_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    arg2 = ptr;
+  }
+  if (arg1) (arg1)->name = *arg2;
+  resultobj = SWIG_Py_Void();
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterRange_name_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterRange *arg1 = (faiss::ParameterRange *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterRange, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterRange_name_get" "', argument " "1"" of type '" "faiss::ParameterRange *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterRange * >(argp1);
+  result = (std::string *) & ((arg1)->name);
+  resultobj = SWIG_From_std_string(static_cast< std::string >(*result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterRange_values_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterRange *arg1 = (faiss::ParameterRange *) 0 ;
+  std::vector< double > *arg2 = (std::vector< double > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterRange_values_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterRange, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterRange_values_set" "', argument " "1"" of type '" "faiss::ParameterRange *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterRange * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ParameterRange_values_set" "', argument " "2"" of type '" "std::vector< double > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< double > * >(argp2);
+  if (arg1) (arg1)->values = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterRange_values_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterRange *arg1 = (faiss::ParameterRange *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< double > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterRange, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterRange_values_get" "', argument " "1"" of type '" "faiss::ParameterRange *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterRange * >(argp1);
+  result = (std::vector< double > *)& ((arg1)->values);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_double_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ParameterRange(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterRange *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ParameterRange", 0, 0, 0)) SWIG_fail;
+  result = (faiss::ParameterRange *)new faiss::ParameterRange();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ParameterRange, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ParameterRange(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterRange *arg1 = (faiss::ParameterRange *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterRange, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ParameterRange" "', argument " "1"" of type '" "faiss::ParameterRange *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterRange * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ParameterRange_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ParameterRange, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ParameterRange_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_parameter_ranges_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  std::vector< faiss::ParameterRange > *arg2 = (std::vector< faiss::ParameterRange > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterSpace_parameter_ranges_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_parameter_ranges_set" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__ParameterRange_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ParameterSpace_parameter_ranges_set" "', argument " "2"" of type '" "std::vector< faiss::ParameterRange > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::ParameterRange > * >(argp2);
+  if (arg1) (arg1)->parameter_ranges = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_parameter_ranges_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::ParameterRange > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_parameter_ranges_get" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  result = (std::vector< faiss::ParameterRange > *)& ((arg1)->parameter_ranges);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__ParameterRange_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_verbose_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterSpace_verbose_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_verbose_set" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ParameterSpace_verbose_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->verbose = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_verbose_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_verbose_get" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  result = (int) ((arg1)->verbose);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_n_experiments_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterSpace_n_experiments_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_n_experiments_set" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ParameterSpace_n_experiments_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->n_experiments = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_n_experiments_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_n_experiments_get" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  result = (int) ((arg1)->n_experiments);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_batchsize_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterSpace_batchsize_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_batchsize_set" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ParameterSpace_batchsize_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->batchsize = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_batchsize_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_batchsize_get" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  result = (size_t) ((arg1)->batchsize);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_thread_over_batches_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  bool arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  bool val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterSpace_thread_over_batches_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_thread_over_batches_set" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  ecode2 = SWIG_AsVal_bool(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ParameterSpace_thread_over_batches_set" "', argument " "2"" of type '" "bool""'");
+  } 
+  arg2 = static_cast< bool >(val2);
+  if (arg1) (arg1)->thread_over_batches = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_thread_over_batches_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  bool result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_thread_over_batches_get" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  result = (bool) ((arg1)->thread_over_batches);
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_min_test_duration_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterSpace_min_test_duration_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_min_test_duration_set" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ParameterSpace_min_test_duration_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->min_test_duration = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_min_test_duration_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_min_test_duration_get" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  result = (double) ((arg1)->min_test_duration);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ParameterSpace(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ParameterSpace", 0, 0, 0)) SWIG_fail;
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ParameterSpace *)new faiss::ParameterSpace();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ParameterSpace, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_n_combinations(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_n_combinations" "', argument " "1"" of type '" "faiss::ParameterSpace const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)((faiss::ParameterSpace const *)arg1)->n_combinations();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_combination_ge(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  size_t arg2 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  bool result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterSpace_combination_ge", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_combination_ge" "', argument " "1"" of type '" "faiss::ParameterSpace const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ParameterSpace_combination_ge" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ParameterSpace_combination_ge" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (bool)((faiss::ParameterSpace const *)arg1)->combination_ge(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_bool(static_cast< bool >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_combination_name(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  std::string result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterSpace_combination_name", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_combination_name" "', argument " "1"" of type '" "faiss::ParameterSpace const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ParameterSpace_combination_name" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = ((faiss::ParameterSpace const *)arg1)->combination_name(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_std_string(static_cast< std::string >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_display(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_display" "', argument " "1"" of type '" "faiss::ParameterSpace const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ParameterSpace const *)arg1)->display();
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_add_range(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  std::string *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 = SWIG_OLDOBJ ;
+  PyObject *swig_obj[2] ;
+  faiss::ParameterRange *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterSpace_add_range", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_add_range" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  {
+    std::string *ptr = (std::string *)0;
+    res2 = SWIG_AsPtr_std_string(swig_obj[1], &ptr);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ParameterSpace_add_range" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "ParameterSpace_add_range" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    arg2 = ptr;
+  }
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::ParameterRange *) &(arg1)->add_range((std::string const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__ParameterRange, 0 |  0 );
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_initialize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterSpace_initialize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_initialize" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ParameterSpace_initialize" "', argument " "2"" of type '" "faiss::Index const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->initialize((faiss::Index const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_set_index_parameters__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  size_t arg3 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_set_index_parameters" "', argument " "1"" of type '" "faiss::ParameterSpace const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ParameterSpace_set_index_parameters" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ParameterSpace_set_index_parameters" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ParameterSpace const *)arg1)->set_index_parameters(arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_set_index_parameters__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  char *arg3 = (char *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int res3 ;
+  char *buf3 = 0 ;
+  int alloc3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_set_index_parameters" "', argument " "1"" of type '" "faiss::ParameterSpace const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ParameterSpace_set_index_parameters" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  res3 = SWIG_AsCharPtrAndSize(swig_obj[2], &buf3, NULL, &alloc3);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ParameterSpace_set_index_parameters" "', argument " "3"" of type '" "char const *""'");
+  }
+  arg3 = reinterpret_cast< char * >(buf3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ParameterSpace const *)arg1)->set_index_parameters(arg2,(char const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  if (alloc3 == SWIG_NEWOBJ) delete[] buf3;
+  return resultobj;
+fail:
+  if (alloc3 == SWIG_NEWOBJ) delete[] buf3;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_set_index_parameters(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "ParameterSpace_set_index_parameters", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ParameterSpace, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__Index, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_ParameterSpace_set_index_parameters__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__ParameterSpace, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_faiss__Index, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        int res = SWIG_AsCharPtrAndSize(argv[2], 0, NULL, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_ParameterSpace_set_index_parameters__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'ParameterSpace_set_index_parameters'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::ParameterSpace::set_index_parameters(faiss::Index *,size_t) const\n"
+    "    faiss::ParameterSpace::set_index_parameters(faiss::Index *,char const *) const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_set_index_parameter(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  std::string *arg3 = 0 ;
+  double arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int res3 = SWIG_OLDOBJ ;
+  double val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterSpace_set_index_parameter", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_set_index_parameter" "', argument " "1"" of type '" "faiss::ParameterSpace const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ParameterSpace_set_index_parameter" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    std::string *ptr = (std::string *)0;
+    res3 = SWIG_AsPtr_std_string(swig_obj[2], &ptr);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ParameterSpace_set_index_parameter" "', argument " "3"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "ParameterSpace_set_index_parameter" "', argument " "3"" of type '" "std::string const &""'"); 
+    }
+    arg3 = ptr;
+  }
+  ecode4 = SWIG_AsVal_double(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ParameterSpace_set_index_parameter" "', argument " "4"" of type '" "double""'");
+  } 
+  arg4 = static_cast< double >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ParameterSpace const *)arg1)->set_index_parameter(arg2,(std::string const &)*arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  if (SWIG_IsNewObj(res3)) delete arg3;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res3)) delete arg3;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_update_bounds(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  size_t arg2 ;
+  faiss::OperatingPoint *arg3 = 0 ;
+  double *arg4 = (double *) 0 ;
+  double *arg5 = (double *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterSpace_update_bounds", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_update_bounds" "', argument " "1"" of type '" "faiss::ParameterSpace const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ParameterSpace_update_bounds" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__OperatingPoint,  0  | 0);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ParameterSpace_update_bounds" "', argument " "3"" of type '" "faiss::OperatingPoint const &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "ParameterSpace_update_bounds" "', argument " "3"" of type '" "faiss::OperatingPoint const &""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::OperatingPoint * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_double, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ParameterSpace_update_bounds" "', argument " "4"" of type '" "double *""'"); 
+  }
+  arg4 = reinterpret_cast< double * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5,SWIGTYPE_p_double, 0 |  0 );
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "ParameterSpace_update_bounds" "', argument " "5"" of type '" "double *""'"); 
+  }
+  arg5 = reinterpret_cast< double * >(argp5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ParameterSpace const *)arg1)->update_bounds(arg2,(faiss::OperatingPoint const &)*arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ParameterSpace_explore(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  size_t arg3 ;
+  float *arg4 = (float *) 0 ;
+  faiss::AutoTuneCriterion *arg5 = 0 ;
+  faiss::OperatingPoints *arg6 = (faiss::OperatingPoints *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  void *argp5 = 0 ;
+  int res5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ParameterSpace_explore", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ParameterSpace_explore" "', argument " "1"" of type '" "faiss::ParameterSpace const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ParameterSpace_explore" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "ParameterSpace_explore" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "ParameterSpace_explore" "', argument " "4"" of type '" "float const *""'"); 
+  }
+  arg4 = reinterpret_cast< float * >(argp4);
+  res5 = SWIG_ConvertPtr(swig_obj[4], &argp5, SWIGTYPE_p_faiss__AutoTuneCriterion,  0  | 0);
+  if (!SWIG_IsOK(res5)) {
+    SWIG_exception_fail(SWIG_ArgError(res5), "in method '" "ParameterSpace_explore" "', argument " "5"" of type '" "faiss::AutoTuneCriterion const &""'"); 
+  }
+  if (!argp5) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "ParameterSpace_explore" "', argument " "5"" of type '" "faiss::AutoTuneCriterion const &""'"); 
+  }
+  arg5 = reinterpret_cast< faiss::AutoTuneCriterion * >(argp5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_faiss__OperatingPoints, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "ParameterSpace_explore" "', argument " "6"" of type '" "faiss::OperatingPoints *""'"); 
+  }
+  arg6 = reinterpret_cast< faiss::OperatingPoints * >(argp6);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::ParameterSpace const *)arg1)->explore(arg2,arg3,(float const *)arg4,(faiss::AutoTuneCriterion const &)*arg5,arg6);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ParameterSpace(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::ParameterSpace *arg1 = (faiss::ParameterSpace *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__ParameterSpace, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ParameterSpace" "', argument " "1"" of type '" "faiss::ParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::ParameterSpace * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ParameterSpace_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__ParameterSpace, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ParameterSpace_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_index_factory__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  char *arg2 = (char *) 0 ;
+  faiss::MetricType arg3 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int res2 ;
+  char *buf2 = 0 ;
+  int alloc2 = 0 ;
+  int val3 ;
+  int ecode3 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "index_factory" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_AsCharPtrAndSize(swig_obj[1], &buf2, NULL, &alloc2);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "index_factory" "', argument " "2"" of type '" "char const *""'");
+  }
+  arg2 = reinterpret_cast< char * >(buf2);
+  ecode3 = SWIG_AsVal_int(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "index_factory" "', argument " "3"" of type '" "faiss::MetricType""'");
+  } 
+  arg3 = static_cast< faiss::MetricType >(val3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::index_factory(arg1,(char const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return resultobj;
+fail:
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_index_factory__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  char *arg2 = (char *) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int res2 ;
+  char *buf2 = 0 ;
+  int alloc2 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "index_factory" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_AsCharPtrAndSize(swig_obj[1], &buf2, NULL, &alloc2);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "index_factory" "', argument " "2"" of type '" "char const *""'");
+  }
+  arg2 = reinterpret_cast< char * >(buf2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::index_factory(arg1,(char const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return resultobj;
+fail:
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_index_factory(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "index_factory", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      int res = SWIG_AsCharPtrAndSize(argv[1], 0, NULL, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_index_factory__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    {
+      int res = SWIG_AsVal_int(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      int res = SWIG_AsCharPtrAndSize(argv[1], 0, NULL, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_int(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          return _wrap_index_factory__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'index_factory'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::index_factory(int,char const *,faiss::MetricType)\n"
+    "    faiss::index_factory(int,char const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN int Swig_var_index_factory_verbose_set(PyObject *_val) {
+  {
+    int val;
+    int res = SWIG_AsVal_int(_val, &val);
+    if (!SWIG_IsOK(res)) {
+      SWIG_exception_fail(SWIG_ArgError(res), "in variable '""faiss::index_factory_verbose""' of type '""int""'");
+    }
+    faiss::index_factory_verbose = static_cast< int >(val);
+  }
+  return 0;
+fail:
+  return 1;
+}
+
+
+SWIGINTERN PyObject *Swig_var_index_factory_verbose_get(void) {
+  PyObject *pyobj = 0;
+  
+  pyobj = SWIG_From_int(static_cast< int >(faiss::index_factory_verbose));
+  return pyobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_index_binary_factory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  char *arg2 = (char *) 0 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  int res2 ;
+  char *buf2 = 0 ;
+  int alloc2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::IndexBinary *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "index_binary_factory", 2, 2, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "index_binary_factory" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  res2 = SWIG_AsCharPtrAndSize(swig_obj[1], &buf2, NULL, &alloc2);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "index_binary_factory" "', argument " "2"" of type '" "char const *""'");
+  }
+  arg2 = reinterpret_cast< char * >(buf2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::IndexBinary *)faiss::index_binary_factory(arg1,(char const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexBinaryIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryFromFloat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryFromFloat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHNSW *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHNSW,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinaryMultiHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinaryMultiHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexBinaryFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexBinaryFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexBinary *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexBinary,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return resultobj;
+fail:
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_MatrixStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t arg2 ;
+  float *arg3 = (float *) 0 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::MatrixStats *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_MatrixStats", 3, 3, swig_obj)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_MatrixStats" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_MatrixStats" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_MatrixStats" "', argument " "3"" of type '" "float const *""'"); 
+  }
+  arg3 = reinterpret_cast< float * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::MatrixStats *)new faiss::MatrixStats(arg1,arg2,(float const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__MatrixStats, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_comments_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  std::string *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 = SWIG_OLDOBJ ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MatrixStats_comments_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_comments_set" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  {
+    std::string *ptr = (std::string *)0;
+    res2 = SWIG_AsPtr_std_string(swig_obj[1], &ptr);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "MatrixStats_comments_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "MatrixStats_comments_set" "', argument " "2"" of type '" "std::string const &""'"); 
+    }
+    arg2 = ptr;
+  }
+  if (arg1) (arg1)->comments = *arg2;
+  resultobj = SWIG_Py_Void();
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res2)) delete arg2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_comments_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::string *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_comments_get" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  result = (std::string *) & ((arg1)->comments);
+  resultobj = SWIG_From_std_string(static_cast< std::string >(*result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_n_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MatrixStats_n_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_n_set" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MatrixStats_n_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->n = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_n_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_n_get" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  result = (size_t) ((arg1)->n);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_d_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MatrixStats_d_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_d_set" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MatrixStats_d_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->d = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_d_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_d_get" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  result = (size_t) ((arg1)->d);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_n_collision_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MatrixStats_n_collision_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_n_collision_set" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MatrixStats_n_collision_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->n_collision = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_n_collision_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_n_collision_get" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  result = (size_t) ((arg1)->n_collision);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_n_valid_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MatrixStats_n_valid_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_n_valid_set" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MatrixStats_n_valid_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->n_valid = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_n_valid_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_n_valid_get" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  result = (size_t) ((arg1)->n_valid);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_n0_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MatrixStats_n0_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_n0_set" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MatrixStats_n0_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->n0 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_n0_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_n0_get" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  result = (size_t) ((arg1)->n0);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_min_norm2_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MatrixStats_min_norm2_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_min_norm2_set" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MatrixStats_min_norm2_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->min_norm2 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_min_norm2_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_min_norm2_get" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  result = (double) ((arg1)->min_norm2);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_max_norm2_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  double arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  double val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MatrixStats_max_norm2_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_max_norm2_set" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  ecode2 = SWIG_AsVal_double(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MatrixStats_max_norm2_set" "', argument " "2"" of type '" "double""'");
+  } 
+  arg2 = static_cast< double >(val2);
+  if (arg1) (arg1)->max_norm2 = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_max_norm2_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  double result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_max_norm2_get" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  result = (double) ((arg1)->max_norm2);
+  resultobj = SWIG_From_double(static_cast< double >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_per_dim_stats_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  std::vector< faiss::MatrixStats::PerDimStats > *arg2 = (std::vector< faiss::MatrixStats::PerDimStats > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MatrixStats_per_dim_stats_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_per_dim_stats_set" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__MatrixStats__PerDimStats_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "MatrixStats_per_dim_stats_set" "', argument " "2"" of type '" "std::vector< faiss::MatrixStats::PerDimStats > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::MatrixStats::PerDimStats > * >(argp2);
+  if (arg1) (arg1)->per_dim_stats = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_per_dim_stats_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::MatrixStats::PerDimStats > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_per_dim_stats_get" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  result = (std::vector< faiss::MatrixStats::PerDimStats > *)& ((arg1)->per_dim_stats);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__MatrixStats__PerDimStats_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_occurrences_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  std::unordered_map< uint64_t,faiss::MatrixStats::Occurrence > *arg2 = (std::unordered_map< uint64_t,faiss::MatrixStats::Occurrence > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MatrixStats_occurrences_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_occurrences_set" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__unordered_mapT_unsigned_long_faiss__MatrixStats__Occurrence_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "MatrixStats_occurrences_set" "', argument " "2"" of type '" "std::unordered_map< uint64_t,faiss::MatrixStats::Occurrence > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::unordered_map< uint64_t,faiss::MatrixStats::Occurrence > * >(argp2);
+  if (arg1) (arg1)->occurrences = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_occurrences_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::unordered_map< uint64_t,faiss::MatrixStats::Occurrence > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_occurrences_get" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  result = (std::unordered_map< uint64_t,faiss::MatrixStats::Occurrence > *)& ((arg1)->occurrences);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__unordered_mapT_unsigned_long_faiss__MatrixStats__Occurrence_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_buf_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  char *arg2 = (char *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  char *buf2 = 0 ;
+  int alloc2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MatrixStats_buf_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_buf_set" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  res2 = SWIG_AsCharPtrAndSize(swig_obj[1], &buf2, NULL, &alloc2);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "MatrixStats_buf_set" "', argument " "2"" of type '" "char *""'");
+  }
+  arg2 = reinterpret_cast< char * >(buf2);
+  if (arg1->buf) delete[] arg1->buf;
+  if (arg2) {
+    size_t size = strlen(reinterpret_cast< const char * >(arg2)) + 1;
+    arg1->buf = (char *)reinterpret_cast< char* >(memcpy(new char[size], reinterpret_cast< const char * >(arg2), sizeof(char)*(size)));
+  } else {
+    arg1->buf = 0;
+  }
+  resultobj = SWIG_Py_Void();
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return resultobj;
+fail:
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_buf_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  char *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_buf_get" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  result = (char *) ((arg1)->buf);
+  resultobj = SWIG_FromCharPtr((const char *)result);
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_nbuf_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MatrixStats_nbuf_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_nbuf_set" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MatrixStats_nbuf_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nbuf = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_nbuf_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_nbuf_get" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  result = (size_t) ((arg1)->nbuf);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_do_comment__varargs__(PyObject *SWIGUNUSEDPARM(self), PyObject *args, PyObject *varargs) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  char *arg2 = (char *) 0 ;
+  void *arg3 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  char *buf2 = 0 ;
+  int alloc2 = 0 ;
+  PyObject * obj0 = 0 ;
+  PyObject * obj1 = 0 ;
+  
+  if (!PyArg_UnpackTuple(args, "MatrixStats_do_comment", 2, 2, &obj0, &obj1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(obj0, &argp1,SWIGTYPE_p_faiss__MatrixStats, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MatrixStats_do_comment" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  res2 = SWIG_AsCharPtrAndSize(obj1, &buf2, NULL, &alloc2);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "MatrixStats_do_comment" "', argument " "2"" of type '" "char const *""'");
+  }
+  arg2 = reinterpret_cast< char * >(buf2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->do_comment((char const *)arg2,arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return resultobj;
+fail:
+  if (alloc2 == SWIG_NEWOBJ) delete[] buf2;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MatrixStats_do_comment(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj;
+  PyObject *varargs;
+  PyObject *newargs;
+  
+  newargs = PyTuple_GetSlice(args,0,2);
+  varargs = PyTuple_GetSlice(args,2,PyTuple_Size(args));
+  resultobj = _wrap_MatrixStats_do_comment__varargs__(NULL,newargs,varargs);
+  Py_XDECREF(newargs);
+  Py_XDECREF(varargs);
+  return resultobj;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_MatrixStats(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::MatrixStats *arg1 = (faiss::MatrixStats *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__MatrixStats, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_MatrixStats" "', argument " "1"" of type '" "faiss::MatrixStats *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::MatrixStats * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *MatrixStats_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__MatrixStats, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *MatrixStats_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_GpuParameterSpace_initialize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuParameterSpace *arg1 = (faiss::gpu::GpuParameterSpace *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuParameterSpace_initialize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuParameterSpace_initialize" "', argument " "1"" of type '" "faiss::gpu::GpuParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuParameterSpace * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuParameterSpace_initialize" "', argument " "2"" of type '" "faiss::Index const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->initialize((faiss::Index const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuParameterSpace_set_index_parameter(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuParameterSpace *arg1 = (faiss::gpu::GpuParameterSpace *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  std::string *arg3 = 0 ;
+  double arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  int res3 = SWIG_OLDOBJ ;
+  double val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuParameterSpace_set_index_parameter", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuParameterSpace, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuParameterSpace_set_index_parameter" "', argument " "1"" of type '" "faiss::gpu::GpuParameterSpace const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuParameterSpace * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuParameterSpace_set_index_parameter" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    std::string *ptr = (std::string *)0;
+    res3 = SWIG_AsPtr_std_string(swig_obj[2], &ptr);
+    if (!SWIG_IsOK(res3)) {
+      SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "GpuParameterSpace_set_index_parameter" "', argument " "3"" of type '" "std::string const &""'"); 
+    }
+    if (!ptr) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "GpuParameterSpace_set_index_parameter" "', argument " "3"" of type '" "std::string const &""'"); 
+    }
+    arg3 = ptr;
+  }
+  ecode4 = SWIG_AsVal_double(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "GpuParameterSpace_set_index_parameter" "', argument " "4"" of type '" "double""'");
+  } 
+  arg4 = static_cast< double >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      ((faiss::gpu::GpuParameterSpace const *)arg1)->set_index_parameter(arg2,(std::string const &)*arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  if (SWIG_IsNewObj(res3)) delete arg3;
+  return resultobj;
+fail:
+  if (SWIG_IsNewObj(res3)) delete arg3;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuParameterSpace(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuParameterSpace *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_GpuParameterSpace", 0, 0, 0)) SWIG_fail;
+  result = (faiss::gpu::GpuParameterSpace *)new faiss::gpu::GpuParameterSpace();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuParameterSpace, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuParameterSpace(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuParameterSpace *arg1 = (faiss::gpu::GpuParameterSpace *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuParameterSpace, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuParameterSpace" "', argument " "1"" of type '" "faiss::gpu::GpuParameterSpace *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuParameterSpace * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuParameterSpace_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuParameterSpace, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuParameterSpace_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ToCPUCloner_merge_index(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToCPUCloner *arg1 = (faiss::gpu::ToCPUCloner *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  faiss::Index *arg3 = (faiss::Index *) 0 ;
+  bool arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  bool val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ToCPUCloner_merge_index", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToCPUCloner, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ToCPUCloner_merge_index" "', argument " "1"" of type '" "faiss::gpu::ToCPUCloner *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToCPUCloner * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ToCPUCloner_merge_index" "', argument " "2"" of type '" "faiss::Index *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ToCPUCloner_merge_index" "', argument " "3"" of type '" "faiss::Index *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::Index * >(argp3);
+  ecode4 = SWIG_AsVal_bool(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ToCPUCloner_merge_index" "', argument " "4"" of type '" "bool""'");
+  } 
+  arg4 = static_cast< bool >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->merge_index(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ToCPUCloner_clone_Index(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToCPUCloner *arg1 = (faiss::gpu::ToCPUCloner *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::Index *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ToCPUCloner_clone_Index", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToCPUCloner, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ToCPUCloner_clone_Index" "', argument " "1"" of type '" "faiss::gpu::ToCPUCloner *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToCPUCloner * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ToCPUCloner_clone_Index" "', argument " "2"" of type '" "faiss::Index const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)(arg1)->clone_Index((faiss::Index const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,0);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,0);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ToCPUCloner(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToCPUCloner *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ToCPUCloner", 0, 0, 0)) SWIG_fail;
+  result = (faiss::gpu::ToCPUCloner *)new faiss::gpu::ToCPUCloner();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__ToCPUCloner, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ToCPUCloner(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToCPUCloner *arg1 = (faiss::gpu::ToCPUCloner *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToCPUCloner, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ToCPUCloner" "', argument " "1"" of type '" "faiss::gpu::ToCPUCloner *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToCPUCloner * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ToCPUCloner_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__ToCPUCloner, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ToCPUCloner_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ToGpuCloner_provider_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToGpuCloner *arg1 = (faiss::gpu::ToGpuCloner *) 0 ;
+  faiss::gpu::GpuResourcesProvider *arg2 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ToGpuCloner_provider_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToGpuCloner, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ToGpuCloner_provider_set" "', argument " "1"" of type '" "faiss::gpu::ToGpuCloner *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToGpuCloner * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ToGpuCloner_provider_set" "', argument " "2"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp2);
+  if (arg1) (arg1)->provider = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ToGpuCloner_provider_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToGpuCloner *arg1 = (faiss::gpu::ToGpuCloner *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::GpuResourcesProvider *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToGpuCloner, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ToGpuCloner_provider_get" "', argument " "1"" of type '" "faiss::gpu::ToGpuCloner *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToGpuCloner * >(argp1);
+  result = (faiss::gpu::GpuResourcesProvider *) ((arg1)->provider);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ToGpuCloner_device_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToGpuCloner *arg1 = (faiss::gpu::ToGpuCloner *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ToGpuCloner_device_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToGpuCloner, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ToGpuCloner_device_set" "', argument " "1"" of type '" "faiss::gpu::ToGpuCloner *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToGpuCloner * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "ToGpuCloner_device_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->device = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ToGpuCloner_device_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToGpuCloner *arg1 = (faiss::gpu::ToGpuCloner *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToGpuCloner, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ToGpuCloner_device_get" "', argument " "1"" of type '" "faiss::gpu::ToGpuCloner *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToGpuCloner * >(argp1);
+  result = (int) ((arg1)->device);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ToGpuCloner(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  faiss::gpu::GpuClonerOptions *arg3 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  faiss::gpu::ToGpuCloner *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_ToGpuCloner", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_ToGpuCloner" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_ToGpuCloner" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuClonerOptions,  0  | 0);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_ToGpuCloner" "', argument " "3"" of type '" "faiss::gpu::GpuClonerOptions const &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ToGpuCloner" "', argument " "3"" of type '" "faiss::gpu::GpuClonerOptions const &""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::ToGpuCloner *)new faiss::gpu::ToGpuCloner(arg1,arg2,(faiss::gpu::GpuClonerOptions const &)*arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__ToGpuCloner, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ToGpuCloner_clone_Index(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToGpuCloner *arg1 = (faiss::gpu::ToGpuCloner *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::Index *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ToGpuCloner_clone_Index", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToGpuCloner, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ToGpuCloner_clone_Index" "', argument " "1"" of type '" "faiss::gpu::ToGpuCloner *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToGpuCloner * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ToGpuCloner_clone_Index" "', argument " "2"" of type '" "faiss::Index const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)(arg1)->clone_Index((faiss::Index const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,0);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,0);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ToGpuCloner(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToGpuCloner *arg1 = (faiss::gpu::ToGpuCloner *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToGpuCloner, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ToGpuCloner" "', argument " "1"" of type '" "faiss::gpu::ToGpuCloner *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToGpuCloner * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ToGpuCloner_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__ToGpuCloner, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ToGpuCloner_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_ToGpuClonerMultiple_sub_cloners_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToGpuClonerMultiple *arg1 = (faiss::gpu::ToGpuClonerMultiple *) 0 ;
+  std::vector< faiss::gpu::ToGpuCloner > *arg2 = (std::vector< faiss::gpu::ToGpuCloner > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ToGpuClonerMultiple_sub_cloners_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToGpuClonerMultiple, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ToGpuClonerMultiple_sub_cloners_set" "', argument " "1"" of type '" "faiss::gpu::ToGpuClonerMultiple *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToGpuClonerMultiple * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__gpu__ToGpuCloner_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ToGpuClonerMultiple_sub_cloners_set" "', argument " "2"" of type '" "std::vector< faiss::gpu::ToGpuCloner > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::gpu::ToGpuCloner > * >(argp2);
+  if (arg1) (arg1)->sub_cloners = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ToGpuClonerMultiple_sub_cloners_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToGpuClonerMultiple *arg1 = (faiss::gpu::ToGpuClonerMultiple *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::gpu::ToGpuCloner > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToGpuClonerMultiple, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ToGpuClonerMultiple_sub_cloners_get" "', argument " "1"" of type '" "faiss::gpu::ToGpuClonerMultiple *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToGpuClonerMultiple * >(argp1);
+  result = (std::vector< faiss::gpu::ToGpuCloner > *)& ((arg1)->sub_cloners);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__gpu__ToGpuCloner_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ToGpuClonerMultiple__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg1 = 0 ;
+  std::vector< int > *arg2 = 0 ;
+  faiss::gpu::GpuMultipleClonerOptions *arg3 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  faiss::gpu::ToGpuClonerMultiple *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t,  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_ToGpuClonerMultiple" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ToGpuClonerMultiple" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > &""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_int_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_ToGpuClonerMultiple" "', argument " "2"" of type '" "std::vector< int > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ToGpuClonerMultiple" "', argument " "2"" of type '" "std::vector< int > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3, SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions,  0  | 0);
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "new_ToGpuClonerMultiple" "', argument " "3"" of type '" "faiss::gpu::GpuMultipleClonerOptions const &""'"); 
+  }
+  if (!argp3) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ToGpuClonerMultiple" "', argument " "3"" of type '" "faiss::gpu::GpuMultipleClonerOptions const &""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::gpu::GpuMultipleClonerOptions * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::ToGpuClonerMultiple *)new faiss::gpu::ToGpuClonerMultiple(*arg1,*arg2,(faiss::gpu::GpuMultipleClonerOptions const &)*arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__ToGpuClonerMultiple, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ToGpuClonerMultiple__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::gpu::ToGpuCloner > *arg1 = 0 ;
+  faiss::gpu::GpuMultipleClonerOptions *arg2 = 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  faiss::gpu::ToGpuClonerMultiple *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_std__vectorT_faiss__gpu__ToGpuCloner_t,  0  | 0);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "new_ToGpuClonerMultiple" "', argument " "1"" of type '" "std::vector< faiss::gpu::ToGpuCloner > const &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ToGpuClonerMultiple" "', argument " "1"" of type '" "std::vector< faiss::gpu::ToGpuCloner > const &""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::gpu::ToGpuCloner > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions,  0  | 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "new_ToGpuClonerMultiple" "', argument " "2"" of type '" "faiss::gpu::GpuMultipleClonerOptions const &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "new_ToGpuClonerMultiple" "', argument " "2"" of type '" "faiss::gpu::GpuMultipleClonerOptions const &""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::gpu::GpuMultipleClonerOptions * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::ToGpuClonerMultiple *)new faiss::gpu::ToGpuClonerMultiple((std::vector< faiss::gpu::ToGpuCloner > const &)*arg1,(faiss::gpu::GpuMultipleClonerOptions const &)*arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__ToGpuClonerMultiple, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_ToGpuClonerMultiple(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[4] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_ToGpuClonerMultiple", 0, 3, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    int res = SWIG_ConvertPtr(argv[0], 0, SWIGTYPE_p_std__vectorT_faiss__gpu__ToGpuCloner_t, SWIG_POINTER_NO_NULL | 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      int res = SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions, SWIG_POINTER_NO_NULL | 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        return _wrap_new_ToGpuClonerMultiple__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, SWIG_POINTER_NO_NULL);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_std__vectorT_int_t, SWIG_POINTER_NO_NULL);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        int res = SWIG_ConvertPtr(argv[2], 0, SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions, SWIG_POINTER_NO_NULL | 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_new_ToGpuClonerMultiple__SWIG_0(self, argc, argv);
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_ToGpuClonerMultiple'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::ToGpuClonerMultiple::ToGpuClonerMultiple(std::vector< faiss::gpu::GpuResourcesProvider * > &,std::vector< int > &,faiss::gpu::GpuMultipleClonerOptions const &)\n"
+    "    faiss::gpu::ToGpuClonerMultiple::ToGpuClonerMultiple(std::vector< faiss::gpu::ToGpuCloner > const &,faiss::gpu::GpuMultipleClonerOptions const &)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_ToGpuClonerMultiple_copy_ivf_shard(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToGpuClonerMultiple *arg1 = (faiss::gpu::ToGpuClonerMultiple *) 0 ;
+  faiss::IndexIVF *arg2 = (faiss::IndexIVF *) 0 ;
+  faiss::IndexIVF *arg3 = (faiss::IndexIVF *) 0 ;
+  long arg4 ;
+  long arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  PyObject *swig_obj[5] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ToGpuClonerMultiple_copy_ivf_shard", 5, 5, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToGpuClonerMultiple, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ToGpuClonerMultiple_copy_ivf_shard" "', argument " "1"" of type '" "faiss::gpu::ToGpuClonerMultiple *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToGpuClonerMultiple * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ToGpuClonerMultiple_copy_ivf_shard" "', argument " "2"" of type '" "faiss::IndexIVF const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::IndexIVF * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_faiss__IndexIVF, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "ToGpuClonerMultiple_copy_ivf_shard" "', argument " "3"" of type '" "faiss::IndexIVF *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::IndexIVF * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "ToGpuClonerMultiple_copy_ivf_shard" "', argument " "4"" of type '" "long""'");
+  } 
+  arg4 = static_cast< long >(val4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "ToGpuClonerMultiple_copy_ivf_shard" "', argument " "5"" of type '" "long""'");
+  } 
+  arg5 = static_cast< long >(val5);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      (arg1)->copy_ivf_shard((faiss::IndexIVF const *)arg2,arg3,arg4,arg5);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ToGpuClonerMultiple_clone_Index_to_shards(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToGpuClonerMultiple *arg1 = (faiss::gpu::ToGpuClonerMultiple *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::Index *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ToGpuClonerMultiple_clone_Index_to_shards", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToGpuClonerMultiple, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ToGpuClonerMultiple_clone_Index_to_shards" "', argument " "1"" of type '" "faiss::gpu::ToGpuClonerMultiple *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToGpuClonerMultiple * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ToGpuClonerMultiple_clone_Index_to_shards" "', argument " "2"" of type '" "faiss::Index const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)(arg1)->clone_Index_to_shards((faiss::Index const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,0);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,0);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_ToGpuClonerMultiple_clone_Index(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToGpuClonerMultiple *arg1 = (faiss::gpu::ToGpuClonerMultiple *) 0 ;
+  faiss::Index *arg2 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::Index *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "ToGpuClonerMultiple_clone_Index", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToGpuClonerMultiple, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "ToGpuClonerMultiple_clone_Index" "', argument " "1"" of type '" "faiss::gpu::ToGpuClonerMultiple *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToGpuClonerMultiple * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "ToGpuClonerMultiple_clone_Index" "', argument " "2"" of type '" "faiss::Index const *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::Index * >(argp2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)(arg1)->clone_Index((faiss::Index const *)arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,0);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,0);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_ToGpuClonerMultiple(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::ToGpuClonerMultiple *arg1 = (faiss::gpu::ToGpuClonerMultiple *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__ToGpuClonerMultiple, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_ToGpuClonerMultiple" "', argument " "1"" of type '" "faiss::gpu::ToGpuClonerMultiple *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::ToGpuClonerMultiple * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *ToGpuClonerMultiple_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__ToGpuClonerMultiple, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *ToGpuClonerMultiple_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_index_gpu_to_cpu(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::Index *arg1 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "index_gpu_to_cpu" "', argument " "1"" of type '" "faiss::Index const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::Index * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::gpu::index_gpu_to_cpu((faiss::Index const *)arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_index_cpu_to_gpu__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  faiss::Index *arg3 = (faiss::Index *) 0 ;
+  faiss::gpu::GpuClonerOptions *arg4 = (faiss::gpu::GpuClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "index_cpu_to_gpu" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "index_cpu_to_gpu" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "index_cpu_to_gpu" "', argument " "3"" of type '" "faiss::Index const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::Index * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "index_cpu_to_gpu" "', argument " "4"" of type '" "faiss::gpu::GpuClonerOptions const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::gpu::GpuClonerOptions * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::gpu::index_cpu_to_gpu(arg1,arg2,(faiss::Index const *)arg3,(faiss::gpu::GpuClonerOptions const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_index_cpu_to_gpu__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuResourcesProvider *arg1 = (faiss::gpu::GpuResourcesProvider *) 0 ;
+  int arg2 ;
+  faiss::Index *arg3 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "index_cpu_to_gpu" "', argument " "1"" of type '" "faiss::gpu::GpuResourcesProvider *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuResourcesProvider * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "index_cpu_to_gpu" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "index_cpu_to_gpu" "', argument " "3"" of type '" "faiss::Index const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::Index * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::gpu::index_cpu_to_gpu(arg1,arg2,(faiss::Index const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_index_cpu_to_gpu(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "index_cpu_to_gpu", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_faiss__Index, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_index_cpu_to_gpu__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__gpu__GpuResourcesProvider, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_int(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_faiss__Index, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_faiss__gpu__GpuClonerOptions, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_index_cpu_to_gpu__SWIG_0(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'index_cpu_to_gpu'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::index_cpu_to_gpu(faiss::gpu::GpuResourcesProvider *,int,faiss::Index const *,faiss::gpu::GpuClonerOptions const *)\n"
+    "    faiss::gpu::index_cpu_to_gpu(faiss::gpu::GpuResourcesProvider *,int,faiss::Index const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_index_cpu_to_gpu_multiple__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg1 = 0 ;
+  std::vector< int > *arg2 = 0 ;
+  faiss::Index *arg3 = (faiss::Index *) 0 ;
+  faiss::gpu::GpuMultipleClonerOptions *arg4 = (faiss::gpu::GpuMultipleClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t,  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "index_cpu_to_gpu_multiple" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "index_cpu_to_gpu_multiple" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > &""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_int_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "index_cpu_to_gpu_multiple" "', argument " "2"" of type '" "std::vector< int > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "index_cpu_to_gpu_multiple" "', argument " "2"" of type '" "std::vector< int > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "index_cpu_to_gpu_multiple" "', argument " "3"" of type '" "faiss::Index const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::Index * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "index_cpu_to_gpu_multiple" "', argument " "4"" of type '" "faiss::gpu::GpuMultipleClonerOptions const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::gpu::GpuMultipleClonerOptions * >(argp4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::gpu::index_cpu_to_gpu_multiple(*arg1,*arg2,(faiss::Index const *)arg3,(faiss::gpu::GpuMultipleClonerOptions const *)arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_index_cpu_to_gpu_multiple__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg1 = 0 ;
+  std::vector< int > *arg2 = 0 ;
+  faiss::Index *arg3 = (faiss::Index *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  faiss::Index *result = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1, SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t,  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "index_cpu_to_gpu_multiple" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > &""'"); 
+  }
+  if (!argp1) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "index_cpu_to_gpu_multiple" "', argument " "1"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > &""'"); 
+  }
+  arg1 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__vectorT_int_t,  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "index_cpu_to_gpu_multiple" "', argument " "2"" of type '" "std::vector< int > &""'"); 
+  }
+  if (!argp2) {
+    SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "index_cpu_to_gpu_multiple" "', argument " "2"" of type '" "std::vector< int > &""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_faiss__Index, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "index_cpu_to_gpu_multiple" "', argument " "3"" of type '" "faiss::Index const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::Index * >(argp3);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)faiss::gpu::index_cpu_to_gpu_multiple(*arg1,*arg2,(faiss::Index const *)arg3);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,SWIG_POINTER_OWN);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_index_cpu_to_gpu_multiple(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[5] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "index_cpu_to_gpu_multiple", 0, 4, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, SWIG_POINTER_NO_NULL);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_std__vectorT_int_t, SWIG_POINTER_NO_NULL);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_faiss__Index, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_index_cpu_to_gpu_multiple__SWIG_1(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, SWIG_POINTER_NO_NULL);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_std__vectorT_int_t, SWIG_POINTER_NO_NULL);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_faiss__Index, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_index_cpu_to_gpu_multiple__SWIG_0(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'index_cpu_to_gpu_multiple'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::gpu::index_cpu_to_gpu_multiple(std::vector< faiss::gpu::GpuResourcesProvider * > &,std::vector< int > &,faiss::Index const *,faiss::gpu::GpuMultipleClonerOptions const *)\n"
+    "    faiss::gpu::index_cpu_to_gpu_multiple(std::vector< faiss::gpu::GpuResourcesProvider * > &,std::vector< int > &,faiss::Index const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuProgressiveDimIndexFactory_options_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuProgressiveDimIndexFactory *arg1 = (faiss::gpu::GpuProgressiveDimIndexFactory *) 0 ;
+  faiss::gpu::GpuMultipleClonerOptions *arg2 = (faiss::gpu::GpuMultipleClonerOptions *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuProgressiveDimIndexFactory_options_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuProgressiveDimIndexFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuProgressiveDimIndexFactory_options_set" "', argument " "1"" of type '" "faiss::gpu::GpuProgressiveDimIndexFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuProgressiveDimIndexFactory * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuProgressiveDimIndexFactory_options_set" "', argument " "2"" of type '" "faiss::gpu::GpuMultipleClonerOptions *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::gpu::GpuMultipleClonerOptions * >(argp2);
+  if (arg1) (arg1)->options = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuProgressiveDimIndexFactory_options_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuProgressiveDimIndexFactory *arg1 = (faiss::gpu::GpuProgressiveDimIndexFactory *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::GpuMultipleClonerOptions *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuProgressiveDimIndexFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuProgressiveDimIndexFactory_options_get" "', argument " "1"" of type '" "faiss::gpu::GpuProgressiveDimIndexFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuProgressiveDimIndexFactory * >(argp1);
+  result = (faiss::gpu::GpuMultipleClonerOptions *)& ((arg1)->options);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuMultipleClonerOptions, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuProgressiveDimIndexFactory_vres_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuProgressiveDimIndexFactory *arg1 = (faiss::gpu::GpuProgressiveDimIndexFactory *) 0 ;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *arg2 = (std::vector< faiss::gpu::GpuResourcesProvider * > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuProgressiveDimIndexFactory_vres_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuProgressiveDimIndexFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuProgressiveDimIndexFactory_vres_set" "', argument " "1"" of type '" "faiss::gpu::GpuProgressiveDimIndexFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuProgressiveDimIndexFactory * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuProgressiveDimIndexFactory_vres_set" "', argument " "2"" of type '" "std::vector< faiss::gpu::GpuResourcesProvider * > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< faiss::gpu::GpuResourcesProvider * > * >(argp2);
+  if (arg1) (arg1)->vres = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuProgressiveDimIndexFactory_vres_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuProgressiveDimIndexFactory *arg1 = (faiss::gpu::GpuProgressiveDimIndexFactory *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< faiss::gpu::GpuResourcesProvider * > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuProgressiveDimIndexFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuProgressiveDimIndexFactory_vres_get" "', argument " "1"" of type '" "faiss::gpu::GpuProgressiveDimIndexFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuProgressiveDimIndexFactory * >(argp1);
+  result = (std::vector< faiss::gpu::GpuResourcesProvider * > *)& ((arg1)->vres);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuProgressiveDimIndexFactory_devices_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuProgressiveDimIndexFactory *arg1 = (faiss::gpu::GpuProgressiveDimIndexFactory *) 0 ;
+  std::vector< int > *arg2 = (std::vector< int > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuProgressiveDimIndexFactory_devices_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuProgressiveDimIndexFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuProgressiveDimIndexFactory_devices_set" "', argument " "1"" of type '" "faiss::gpu::GpuProgressiveDimIndexFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuProgressiveDimIndexFactory * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "GpuProgressiveDimIndexFactory_devices_set" "', argument " "2"" of type '" "std::vector< int > *""'"); 
+  }
+  arg2 = reinterpret_cast< std::vector< int > * >(argp2);
+  if (arg1) (arg1)->devices = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuProgressiveDimIndexFactory_devices_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuProgressiveDimIndexFactory *arg1 = (faiss::gpu::GpuProgressiveDimIndexFactory *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::vector< int > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuProgressiveDimIndexFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuProgressiveDimIndexFactory_devices_get" "', argument " "1"" of type '" "faiss::gpu::GpuProgressiveDimIndexFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuProgressiveDimIndexFactory * >(argp1);
+  result = (std::vector< int > *)& ((arg1)->devices);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_std__vectorT_int_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuProgressiveDimIndexFactory_ncall_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuProgressiveDimIndexFactory *arg1 = (faiss::gpu::GpuProgressiveDimIndexFactory *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuProgressiveDimIndexFactory_ncall_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuProgressiveDimIndexFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuProgressiveDimIndexFactory_ncall_set" "', argument " "1"" of type '" "faiss::gpu::GpuProgressiveDimIndexFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuProgressiveDimIndexFactory * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuProgressiveDimIndexFactory_ncall_set" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  if (arg1) (arg1)->ncall = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuProgressiveDimIndexFactory_ncall_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuProgressiveDimIndexFactory *arg1 = (faiss::gpu::GpuProgressiveDimIndexFactory *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuProgressiveDimIndexFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuProgressiveDimIndexFactory_ncall_get" "', argument " "1"" of type '" "faiss::gpu::GpuProgressiveDimIndexFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuProgressiveDimIndexFactory * >(argp1);
+  result = (int) ((arg1)->ncall);
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_GpuProgressiveDimIndexFactory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::gpu::GpuProgressiveDimIndexFactory *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_GpuProgressiveDimIndexFactory" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::gpu::GpuProgressiveDimIndexFactory *)new faiss::gpu::GpuProgressiveDimIndexFactory(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__gpu__GpuProgressiveDimIndexFactory, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_GpuProgressiveDimIndexFactory___call__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuProgressiveDimIndexFactory *arg1 = (faiss::gpu::GpuProgressiveDimIndexFactory *) 0 ;
+  int arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::Index *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "GpuProgressiveDimIndexFactory___call__", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuProgressiveDimIndexFactory, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "GpuProgressiveDimIndexFactory___call__" "', argument " "1"" of type '" "faiss::gpu::GpuProgressiveDimIndexFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuProgressiveDimIndexFactory * >(argp1);
+  ecode2 = SWIG_AsVal_int(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "GpuProgressiveDimIndexFactory___call__" "', argument " "2"" of type '" "int""'");
+  } 
+  arg2 = static_cast< int >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (faiss::Index *)(arg1)->operator ()(arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  {
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMapTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexIDMap2 *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexShards *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexShardsTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,525,DOWNCAST2@*/
+    if (dynamic_cast<faiss::IndexReplicas *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexReplicasTemplateT_faiss__Index_t,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQR *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQR,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFSpectralHash *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFSpectralHash,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlatDedup *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlatDedup,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexIVF *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexIVF,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefineFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefineFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexRefine *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexRefine,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQFastScan *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQFastScan,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexResidualQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexResidualQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLocalSearchQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLocalSearchQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::ResidualCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__ResidualCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::LocalSearchCoarseQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__LocalSearchCoarseQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLSH *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLSH,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexLattice *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexLattice,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexPreTransform *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexPreTransform,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::MultiIndexQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__MultiIndexQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSWSQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSWSQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexHNSW2Level *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexHNSW2Level,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNNDescentFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNNDescentFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::IndexNSGFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__IndexNSGFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index2Layer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index2Layer,0);
+    } else
+    /*@SWIG@*/
+    
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFPQ *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFPQ,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFFlat,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexIVFScalarQuantizer *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexIVFScalarQuantizer,0);
+    } else
+    /*@SWIG@*/
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,531,DOWNCAST_GPU@*/
+    if (dynamic_cast<faiss::gpu::GpuIndexFlat *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__gpu__GpuIndexFlat,0);
+    } else
+    /*@SWIG@*/
+    
+    // default for non-recognized classes
+    /*@SWIG:/home/huchen/FAISS/faiss/faiss/python/swigfaiss.swig,519,DOWNCAST@*/
+    if (dynamic_cast<faiss::Index *> (result)) {
+      resultobj = SWIG_NewPointerObj(result,SWIGTYPE_p_faiss__Index,0);
+    } else
+    /*@SWIG@*/
+    if (result == NULL)
+    {
+      resultobj = SWIG_Py_Void();
+      
+    } else {
+      assert(false);
+    }
+  }
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_GpuProgressiveDimIndexFactory(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::gpu::GpuProgressiveDimIndexFactory *arg1 = (faiss::gpu::GpuProgressiveDimIndexFactory *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__gpu__GpuProgressiveDimIndexFactory, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_GpuProgressiveDimIndexFactory" "', argument " "1"" of type '" "faiss::gpu::GpuProgressiveDimIndexFactory *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::gpu::GpuProgressiveDimIndexFactory * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *GpuProgressiveDimIndexFactory_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__gpu__GpuProgressiveDimIndexFactory, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *GpuProgressiveDimIndexFactory_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_PyCallbackIOWriter_callback_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  PyCallbackIOWriter *arg1 = (PyCallbackIOWriter *) 0 ;
+  PyObject *arg2 = (PyObject *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PyCallbackIOWriter_callback_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_PyCallbackIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PyCallbackIOWriter_callback_set" "', argument " "1"" of type '" "PyCallbackIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< PyCallbackIOWriter * >(argp1);
+  arg2 = swig_obj[1];
+  if (arg1) (arg1)->callback = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PyCallbackIOWriter_callback_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  PyCallbackIOWriter *arg1 = (PyCallbackIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  PyObject *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_PyCallbackIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PyCallbackIOWriter_callback_get" "', argument " "1"" of type '" "PyCallbackIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< PyCallbackIOWriter * >(argp1);
+  result = (PyObject *) ((arg1)->callback);
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PyCallbackIOWriter_bs_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  PyCallbackIOWriter *arg1 = (PyCallbackIOWriter *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PyCallbackIOWriter_bs_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_PyCallbackIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PyCallbackIOWriter_bs_set" "', argument " "1"" of type '" "PyCallbackIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< PyCallbackIOWriter * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PyCallbackIOWriter_bs_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->bs = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PyCallbackIOWriter_bs_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  PyCallbackIOWriter *arg1 = (PyCallbackIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_PyCallbackIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PyCallbackIOWriter_bs_get" "', argument " "1"" of type '" "PyCallbackIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< PyCallbackIOWriter * >(argp1);
+  result = (size_t) ((arg1)->bs);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PyCallbackIOWriter__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  PyObject *arg1 = (PyObject *) 0 ;
+  size_t arg2 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyCallbackIOWriter *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  arg1 = swig_obj[0];
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_PyCallbackIOWriter" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (PyCallbackIOWriter *)new PyCallbackIOWriter(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_PyCallbackIOWriter, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PyCallbackIOWriter__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  PyObject *arg1 = (PyObject *) 0 ;
+  PyCallbackIOWriter *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  arg1 = swig_obj[0];
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (PyCallbackIOWriter *)new PyCallbackIOWriter(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_PyCallbackIOWriter, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PyCallbackIOWriter(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_PyCallbackIOWriter", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    _v = (argv[0] != 0);
+    if (_v) {
+      return _wrap_new_PyCallbackIOWriter__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    _v = (argv[0] != 0);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_PyCallbackIOWriter__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_PyCallbackIOWriter'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    PyCallbackIOWriter::PyCallbackIOWriter(PyObject *,size_t)\n"
+    "    PyCallbackIOWriter::PyCallbackIOWriter(PyObject *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_PyCallbackIOWriter___call__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  PyCallbackIOWriter *arg1 = (PyCallbackIOWriter *) 0 ;
+  void *arg2 = (void *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PyCallbackIOWriter___call__", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_PyCallbackIOWriter, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PyCallbackIOWriter___call__" "', argument " "1"" of type '" "PyCallbackIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< PyCallbackIOWriter * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PyCallbackIOWriter___call__" "', argument " "2"" of type '" "void const *""'"); 
+  }
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "PyCallbackIOWriter___call__" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "PyCallbackIOWriter___call__" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->operator ()((void const *)arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_PyCallbackIOWriter(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  PyCallbackIOWriter *arg1 = (PyCallbackIOWriter *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_PyCallbackIOWriter, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_PyCallbackIOWriter" "', argument " "1"" of type '" "PyCallbackIOWriter *""'"); 
+  }
+  arg1 = reinterpret_cast< PyCallbackIOWriter * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *PyCallbackIOWriter_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_PyCallbackIOWriter, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *PyCallbackIOWriter_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_PyCallbackIOReader_callback_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  PyCallbackIOReader *arg1 = (PyCallbackIOReader *) 0 ;
+  PyObject *arg2 = (PyObject *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PyCallbackIOReader_callback_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_PyCallbackIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PyCallbackIOReader_callback_set" "', argument " "1"" of type '" "PyCallbackIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< PyCallbackIOReader * >(argp1);
+  arg2 = swig_obj[1];
+  if (arg1) (arg1)->callback = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PyCallbackIOReader_callback_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  PyCallbackIOReader *arg1 = (PyCallbackIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  PyObject *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_PyCallbackIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PyCallbackIOReader_callback_get" "', argument " "1"" of type '" "PyCallbackIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< PyCallbackIOReader * >(argp1);
+  result = (PyObject *) ((arg1)->callback);
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PyCallbackIOReader_bs_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  PyCallbackIOReader *arg1 = (PyCallbackIOReader *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PyCallbackIOReader_bs_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_PyCallbackIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PyCallbackIOReader_bs_set" "', argument " "1"" of type '" "PyCallbackIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< PyCallbackIOReader * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "PyCallbackIOReader_bs_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->bs = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_PyCallbackIOReader_bs_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  PyCallbackIOReader *arg1 = (PyCallbackIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_PyCallbackIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PyCallbackIOReader_bs_get" "', argument " "1"" of type '" "PyCallbackIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< PyCallbackIOReader * >(argp1);
+  result = (size_t) ((arg1)->bs);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PyCallbackIOReader__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  PyObject *arg1 = (PyObject *) 0 ;
+  size_t arg2 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyCallbackIOReader *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  arg1 = swig_obj[0];
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "new_PyCallbackIOReader" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (PyCallbackIOReader *)new PyCallbackIOReader(arg1,arg2);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_PyCallbackIOReader, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PyCallbackIOReader__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  PyObject *arg1 = (PyObject *) 0 ;
+  PyCallbackIOReader *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  arg1 = swig_obj[0];
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (PyCallbackIOReader *)new PyCallbackIOReader(arg1);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_PyCallbackIOReader, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_PyCallbackIOReader(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_PyCallbackIOReader", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    _v = (argv[0] != 0);
+    if (_v) {
+      return _wrap_new_PyCallbackIOReader__SWIG_1(self, argc, argv);
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    _v = (argv[0] != 0);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_new_PyCallbackIOReader__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_PyCallbackIOReader'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    PyCallbackIOReader::PyCallbackIOReader(PyObject *,size_t)\n"
+    "    PyCallbackIOReader::PyCallbackIOReader(PyObject *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_PyCallbackIOReader___call__(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  PyCallbackIOReader *arg1 = (PyCallbackIOReader *) 0 ;
+  void *arg2 = (void *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  int res2 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  PyObject *swig_obj[4] ;
+  size_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "PyCallbackIOReader___call__", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_PyCallbackIOReader, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "PyCallbackIOReader___call__" "', argument " "1"" of type '" "PyCallbackIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< PyCallbackIOReader * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "PyCallbackIOReader___call__" "', argument " "2"" of type '" "void *""'"); 
+  }
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "PyCallbackIOReader___call__" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "PyCallbackIOReader___call__" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      result = (size_t)(arg1)->operator ()(arg2,arg3,arg4);
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_PyCallbackIOReader(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  PyCallbackIOReader *arg1 = (PyCallbackIOReader *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_PyCallbackIOReader, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_PyCallbackIOReader" "', argument " "1"" of type '" "PyCallbackIOReader *""'"); 
+  }
+  arg1 = reinterpret_cast< PyCallbackIOReader * >(argp1);
+  {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+      delete arg1;
+    } catch(faiss::FaissException & e) {
+      PyEval_RestoreThread(_save);
+      
+      if (PyErr_Occurred()) {
+        // some previous code already set the error type.
+      } else {
+        PyErr_SetString(PyExc_RuntimeError, e.what());
+      }
+      SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+      PyEval_RestoreThread(_save);
+      PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+      SWIG_fail;
+    } catch(const std::exception& ex) {
+      PyEval_RestoreThread(_save);
+      std::string what = std::string("C++ exception ") + ex.what();
+      PyErr_SetString(PyExc_RuntimeError, what.c_str());
+      SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+  }
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *PyCallbackIOReader_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_PyCallbackIOReader, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *PyCallbackIOReader_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_swig_ptr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  PyObject *arg1 = (PyObject *) 0 ;
+  PyObject *swig_obj[1] ;
+  PyObject *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  arg1 = swig_obj[0];
+  result = (PyObject *)swig_ptr(arg1);
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_rev_swig_ptr__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  float *arg1 = (float *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "rev_swig_ptr" "', argument " "1"" of type '" "float *""'"); 
+  }
+  arg1 = reinterpret_cast< float * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "rev_swig_ptr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (PyObject *)rev_swig_ptr(arg1,arg2);
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_rev_swig_ptr__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  double *arg1 = (double *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_double, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "rev_swig_ptr" "', argument " "1"" of type '" "double *""'"); 
+  }
+  arg1 = reinterpret_cast< double * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "rev_swig_ptr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (PyObject *)rev_swig_ptr(arg1,arg2);
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_rev_swig_ptr__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  unsigned char *arg1 = (unsigned char *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_char, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "rev_swig_ptr" "', argument " "1"" of type '" "unsigned char *""'"); 
+  }
+  arg1 = reinterpret_cast< unsigned char * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "rev_swig_ptr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (PyObject *)rev_swig_ptr(arg1,arg2);
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_rev_swig_ptr__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  char *arg1 = (char *) 0 ;
+  size_t arg2 ;
+  int res1 ;
+  char *buf1 = 0 ;
+  int alloc1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_AsCharPtrAndSize(swig_obj[0], &buf1, NULL, &alloc1);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "rev_swig_ptr" "', argument " "1"" of type '" "char *""'");
+  }
+  arg1 = reinterpret_cast< char * >(buf1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "rev_swig_ptr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (PyObject *)rev_swig_ptr(arg1,arg2);
+  resultobj = result;
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return resultobj;
+fail:
+  if (alloc1 == SWIG_NEWOBJ) delete[] buf1;
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_rev_swig_ptr__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  unsigned short *arg1 = (unsigned short *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_short, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "rev_swig_ptr" "', argument " "1"" of type '" "unsigned short *""'"); 
+  }
+  arg1 = reinterpret_cast< unsigned short * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "rev_swig_ptr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (PyObject *)rev_swig_ptr(arg1,arg2);
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_rev_swig_ptr__SWIG_5(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  short *arg1 = (short *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_short, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "rev_swig_ptr" "', argument " "1"" of type '" "short *""'"); 
+  }
+  arg1 = reinterpret_cast< short * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "rev_swig_ptr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (PyObject *)rev_swig_ptr(arg1,arg2);
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_rev_swig_ptr__SWIG_6(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int *arg1 = (int *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "rev_swig_ptr" "', argument " "1"" of type '" "int *""'"); 
+  }
+  arg1 = reinterpret_cast< int * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "rev_swig_ptr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (PyObject *)rev_swig_ptr(arg1,arg2);
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_rev_swig_ptr__SWIG_7(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  unsigned int *arg1 = (unsigned int *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_int, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "rev_swig_ptr" "', argument " "1"" of type '" "unsigned int *""'"); 
+  }
+  arg1 = reinterpret_cast< unsigned int * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "rev_swig_ptr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (PyObject *)rev_swig_ptr(arg1,arg2);
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_rev_swig_ptr__SWIG_8(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  int64_t *arg1 = (int64_t *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "rev_swig_ptr" "', argument " "1"" of type '" "int64_t *""'"); 
+  }
+  arg1 = reinterpret_cast< int64_t * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "rev_swig_ptr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (PyObject *)rev_swig_ptr(arg1,arg2);
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_rev_swig_ptr__SWIG_9(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  uint64_t *arg1 = (uint64_t *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *result = 0 ;
+  
+  if ((nobjs < 2) || (nobjs > 2)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "rev_swig_ptr" "', argument " "1"" of type '" "uint64_t *""'"); 
+  }
+  arg1 = reinterpret_cast< uint64_t * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "rev_swig_ptr" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (PyObject *)rev_swig_ptr(arg1,arg2);
+  resultobj = result;
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_rev_swig_ptr(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[3] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "rev_swig_ptr", 0, 2, argv))) SWIG_fail;
+  --argc;
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_float, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_rev_swig_ptr__SWIG_0(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_double, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_rev_swig_ptr__SWIG_1(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_unsigned_char, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_rev_swig_ptr__SWIG_2(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_unsigned_short, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_rev_swig_ptr__SWIG_4(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_short, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_rev_swig_ptr__SWIG_5(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_int, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_rev_swig_ptr__SWIG_6(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_unsigned_int, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_rev_swig_ptr__SWIG_7(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_long, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_rev_swig_ptr__SWIG_8(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_unsigned_long, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_rev_swig_ptr__SWIG_9(self, argc, argv);
+      }
+    }
+  }
+  if (argc == 2) {
+    int _v;
+    int res = SWIG_AsCharPtrAndSize(argv[0], 0, NULL, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        return _wrap_rev_swig_ptr__SWIG_3(self, argc, argv);
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'rev_swig_ptr'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    rev_swig_ptr(float *,size_t)\n"
+    "    rev_swig_ptr(double *,size_t)\n"
+    "    rev_swig_ptr(unsigned char *,size_t)\n"
+    "    rev_swig_ptr(char *,size_t)\n"
+    "    rev_swig_ptr(unsigned short *,size_t)\n"
+    "    rev_swig_ptr(short *,size_t)\n"
+    "    rev_swig_ptr(int *,size_t)\n"
+    "    rev_swig_ptr(unsigned int *,size_t)\n"
+    "    rev_swig_ptr(int64_t *,size_t)\n"
+    "    rev_swig_ptr(uint64_t *,size_t)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_nh_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_minheap_array_t_nh_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_nh_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_minheap_array_t_nh_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nh = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_nh_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_nh_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  result = (size_t) ((arg1)->nh);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_k_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_minheap_array_t_k_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_k_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_minheap_array_t_k_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->k = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_k_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_k_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  result = (size_t) ((arg1)->k);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_ids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::TI *arg2 = (faiss::HeapArray< faiss::CMin< float,long > >::TI *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_minheap_array_t_ids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_ids_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "float_minheap_array_t_ids_set" "', argument " "2"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::TI *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::TI * >(argp2);
+  if (arg1) (arg1)->ids = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_ids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::HeapArray< faiss::CMin< float,long > >::TI *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_ids_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  result = (faiss::HeapArray< faiss::CMin< float,long > >::TI *) ((arg1)->ids);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_val_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::T *arg2 = (faiss::HeapArray< faiss::CMin< float,long > >::T *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_minheap_array_t_val_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_val_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "float_minheap_array_t_val_set" "', argument " "2"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::T *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::T * >(argp2);
+  if (arg1) (arg1)->val = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_val_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::HeapArray< faiss::CMin< float,long > >::T *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_val_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  result = (faiss::HeapArray< faiss::CMin< float,long > >::T *) ((arg1)->val);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_get_val(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::HeapArray< faiss::CMin< float,long > >::T *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_minheap_array_t_get_val", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_get_val" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_minheap_array_t_get_val" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (faiss::HeapArray< faiss::CMin< float,long > >::T *)(arg1)->get_val(arg2);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_get_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::HeapArray< faiss::CMin< float,long > >::TI *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_minheap_array_t_get_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_get_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_minheap_array_t_get_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (faiss::HeapArray< faiss::CMin< float,long > >::TI *)(arg1)->get_ids(arg2);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_heapify(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_heapify" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  (arg1)->heapify();
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_addn__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::TI arg4 ;
+  size_t arg5 ;
+  int64_t arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  long val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_minheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_minheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::T * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "float_minheap_array_t_addn" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::TI""'");
+  } 
+  arg4 = static_cast< faiss::HeapArray< faiss::CMin< float,long > >::TI >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "float_minheap_array_t_addn" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_long(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "float_minheap_array_t_addn" "', argument " "6"" of type '" "int64_t""'");
+  } 
+  arg6 = static_cast< int64_t >(val6);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMin< float,long > >::T const *)arg3,arg4,arg5,arg6);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_addn__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::TI arg4 ;
+  size_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_minheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_minheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::T * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "float_minheap_array_t_addn" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::TI""'");
+  } 
+  arg4 = static_cast< faiss::HeapArray< faiss::CMin< float,long > >::TI >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "float_minheap_array_t_addn" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMin< float,long > >::T const *)arg3,arg4,arg5);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_addn__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::TI arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_minheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_minheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::T * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "float_minheap_array_t_addn" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::TI""'");
+  } 
+  arg4 = static_cast< faiss::HeapArray< faiss::CMin< float,long > >::TI >(val4);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMin< float,long > >::T const *)arg3,arg4);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_addn__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< float,long > >::T *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_minheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_minheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::T * >(argp3);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMin< float,long > >::T const *)arg3);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_addn(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "float_minheap_array_t_addn", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_float_minheap_array_t_addn__SWIG_3(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_float_minheap_array_t_addn__SWIG_2(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_float_minheap_array_t_addn__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_long(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_float_minheap_array_t_addn__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'float_minheap_array_t_addn'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::HeapArray< faiss::CMin< float,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMin< float,long > >::T const *,faiss::HeapArray< faiss::CMin< float,long > >::TI,size_t,int64_t)\n"
+    "    faiss::HeapArray< faiss::CMin< float,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMin< float,long > >::T const *,faiss::HeapArray< faiss::CMin< float,long > >::TI,size_t)\n"
+    "    faiss::HeapArray< faiss::CMin< float,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMin< float,long > >::T const *,faiss::HeapArray< faiss::CMin< float,long > >::TI)\n"
+    "    faiss::HeapArray< faiss::CMin< float,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMin< float,long > >::T const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_addn_with_ids__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMin< float,long > >::TI *) 0 ;
+  int64_t arg5 ;
+  size_t arg6 ;
+  int64_t arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  long val7 ;
+  int ecode7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::TI * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  ecode7 = SWIG_AsVal_long(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "7"" of type '" "int64_t""'");
+  } 
+  arg7 = static_cast< int64_t >(val7);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMin< float,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMin< float,long > >::TI const *)arg4,arg5,arg6,arg7);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_addn_with_ids__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMin< float,long > >::TI *) 0 ;
+  int64_t arg5 ;
+  size_t arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::TI * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMin< float,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMin< float,long > >::TI const *)arg4,arg5,arg6);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_addn_with_ids__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMin< float,long > >::TI *) 0 ;
+  int64_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::TI * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMin< float,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMin< float,long > >::TI const *)arg4,arg5);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_addn_with_ids__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMin< float,long > >::TI *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::TI * >(argp4);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMin< float,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMin< float,long > >::TI const *)arg4);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_addn_with_ids__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< float,long > >::T *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_minheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::T * >(argp3);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMin< float,long > >::T const *)arg3);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_addn_with_ids(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "float_minheap_array_t_addn_with_ids", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_float_minheap_array_t_addn_with_ids__SWIG_4(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_float_minheap_array_t_addn_with_ids__SWIG_3(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_float_minheap_array_t_addn_with_ids__SWIG_2(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_size_t(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_float_minheap_array_t_addn_with_ids__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_size_t(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_long(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  return _wrap_float_minheap_array_t_addn_with_ids__SWIG_0(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'float_minheap_array_t_addn_with_ids'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::HeapArray< faiss::CMin< float,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMin< float,long > >::T const *,faiss::HeapArray< faiss::CMin< float,long > >::TI const *,int64_t,size_t,int64_t)\n"
+    "    faiss::HeapArray< faiss::CMin< float,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMin< float,long > >::T const *,faiss::HeapArray< faiss::CMin< float,long > >::TI const *,int64_t,size_t)\n"
+    "    faiss::HeapArray< faiss::CMin< float,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMin< float,long > >::T const *,faiss::HeapArray< faiss::CMin< float,long > >::TI const *,int64_t)\n"
+    "    faiss::HeapArray< faiss::CMin< float,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMin< float,long > >::T const *,faiss::HeapArray< faiss::CMin< float,long > >::TI const *)\n"
+    "    faiss::HeapArray< faiss::CMin< float,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMin< float,long > >::T const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_reorder(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_reorder" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  (arg1)->reorder();
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_minheap_array_t_per_line_extrema(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::T *arg2 = (faiss::HeapArray< faiss::CMin< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< float,long > >::TI *arg3 = (faiss::HeapArray< faiss::CMin< float,long > >::TI *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_minheap_array_t_per_line_extrema", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_minheap_array_t_per_line_extrema" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "float_minheap_array_t_per_line_extrema" "', argument " "2"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::T *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::T * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_minheap_array_t_per_line_extrema" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< float,long > >::TI *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,long > >::TI * >(argp3);
+  ((faiss::HeapArray< faiss::CMin< float,int64_t > > const *)arg1)->per_line_extrema(arg2,arg3);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_float_minheap_array_t(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_float_minheap_array_t", 0, 0, 0)) SWIG_fail;
+  result = (faiss::HeapArray< faiss::CMin< float,int64_t > > *)new faiss::HeapArray< faiss::CMin< float,int64_t > >();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_float_minheap_array_t(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_float_minheap_array_t" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< float,int64_t > > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *float_minheap_array_t_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *float_minheap_array_t_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_nh_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_minheap_array_t_nh_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_nh_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_minheap_array_t_nh_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nh = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_nh_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_nh_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  result = (size_t) ((arg1)->nh);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_k_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_minheap_array_t_k_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_k_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_minheap_array_t_k_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->k = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_k_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_k_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  result = (size_t) ((arg1)->k);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_ids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::TI *arg2 = (faiss::HeapArray< faiss::CMin< int,long > >::TI *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_minheap_array_t_ids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_ids_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "int_minheap_array_t_ids_set" "', argument " "2"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::TI *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::TI * >(argp2);
+  if (arg1) (arg1)->ids = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_ids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::HeapArray< faiss::CMin< int,long > >::TI *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_ids_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  result = (faiss::HeapArray< faiss::CMin< int,long > >::TI *) ((arg1)->ids);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_val_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::T *arg2 = (faiss::HeapArray< faiss::CMin< int,long > >::T *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_minheap_array_t_val_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_val_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "int_minheap_array_t_val_set" "', argument " "2"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::T *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::T * >(argp2);
+  if (arg1) (arg1)->val = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_val_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::HeapArray< faiss::CMin< int,long > >::T *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_val_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  result = (faiss::HeapArray< faiss::CMin< int,long > >::T *) ((arg1)->val);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_int, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_get_val(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::HeapArray< faiss::CMin< int,long > >::T *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_minheap_array_t_get_val", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_get_val" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_minheap_array_t_get_val" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (faiss::HeapArray< faiss::CMin< int,long > >::T *)(arg1)->get_val(arg2);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_int, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_get_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::HeapArray< faiss::CMin< int,long > >::TI *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_minheap_array_t_get_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_get_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_minheap_array_t_get_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (faiss::HeapArray< faiss::CMin< int,long > >::TI *)(arg1)->get_ids(arg2);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_heapify(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_heapify" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  (arg1)->heapify();
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_addn__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::TI arg4 ;
+  size_t arg5 ;
+  int64_t arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  long val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_minheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_minheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::T * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "int_minheap_array_t_addn" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::TI""'");
+  } 
+  arg4 = static_cast< faiss::HeapArray< faiss::CMin< int,long > >::TI >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "int_minheap_array_t_addn" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_long(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "int_minheap_array_t_addn" "', argument " "6"" of type '" "int64_t""'");
+  } 
+  arg6 = static_cast< int64_t >(val6);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMin< int,long > >::T const *)arg3,arg4,arg5,arg6);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_addn__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::TI arg4 ;
+  size_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_minheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_minheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::T * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "int_minheap_array_t_addn" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::TI""'");
+  } 
+  arg4 = static_cast< faiss::HeapArray< faiss::CMin< int,long > >::TI >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "int_minheap_array_t_addn" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMin< int,long > >::T const *)arg3,arg4,arg5);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_addn__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::TI arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_minheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_minheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::T * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "int_minheap_array_t_addn" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::TI""'");
+  } 
+  arg4 = static_cast< faiss::HeapArray< faiss::CMin< int,long > >::TI >(val4);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMin< int,long > >::T const *)arg3,arg4);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_addn__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< int,long > >::T *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_minheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_minheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::T * >(argp3);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMin< int,long > >::T const *)arg3);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_addn(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "int_minheap_array_t_addn", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_int_minheap_array_t_addn__SWIG_3(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_int_minheap_array_t_addn__SWIG_2(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_int_minheap_array_t_addn__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_long(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_int_minheap_array_t_addn__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'int_minheap_array_t_addn'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::HeapArray< faiss::CMin< int,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMin< int,long > >::T const *,faiss::HeapArray< faiss::CMin< int,long > >::TI,size_t,int64_t)\n"
+    "    faiss::HeapArray< faiss::CMin< int,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMin< int,long > >::T const *,faiss::HeapArray< faiss::CMin< int,long > >::TI,size_t)\n"
+    "    faiss::HeapArray< faiss::CMin< int,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMin< int,long > >::T const *,faiss::HeapArray< faiss::CMin< int,long > >::TI)\n"
+    "    faiss::HeapArray< faiss::CMin< int,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMin< int,long > >::T const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_addn_with_ids__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMin< int,long > >::TI *) 0 ;
+  int64_t arg5 ;
+  size_t arg6 ;
+  int64_t arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  long val7 ;
+  int ecode7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::TI * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  ecode7 = SWIG_AsVal_long(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "7"" of type '" "int64_t""'");
+  } 
+  arg7 = static_cast< int64_t >(val7);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMin< int,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMin< int,long > >::TI const *)arg4,arg5,arg6,arg7);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_addn_with_ids__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMin< int,long > >::TI *) 0 ;
+  int64_t arg5 ;
+  size_t arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::TI * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMin< int,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMin< int,long > >::TI const *)arg4,arg5,arg6);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_addn_with_ids__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMin< int,long > >::TI *) 0 ;
+  int64_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::TI * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMin< int,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMin< int,long > >::TI const *)arg4,arg5);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_addn_with_ids__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMin< int,long > >::TI *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::TI * >(argp4);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMin< int,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMin< int,long > >::TI const *)arg4);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_addn_with_ids__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMin< int,long > >::T *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_minheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::T * >(argp3);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMin< int,long > >::T const *)arg3);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_addn_with_ids(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "int_minheap_array_t_addn_with_ids", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_int_minheap_array_t_addn_with_ids__SWIG_4(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_int_minheap_array_t_addn_with_ids__SWIG_3(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_int_minheap_array_t_addn_with_ids__SWIG_2(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_size_t(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_int_minheap_array_t_addn_with_ids__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_size_t(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_long(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  return _wrap_int_minheap_array_t_addn_with_ids__SWIG_0(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'int_minheap_array_t_addn_with_ids'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::HeapArray< faiss::CMin< int,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMin< int,long > >::T const *,faiss::HeapArray< faiss::CMin< int,long > >::TI const *,int64_t,size_t,int64_t)\n"
+    "    faiss::HeapArray< faiss::CMin< int,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMin< int,long > >::T const *,faiss::HeapArray< faiss::CMin< int,long > >::TI const *,int64_t,size_t)\n"
+    "    faiss::HeapArray< faiss::CMin< int,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMin< int,long > >::T const *,faiss::HeapArray< faiss::CMin< int,long > >::TI const *,int64_t)\n"
+    "    faiss::HeapArray< faiss::CMin< int,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMin< int,long > >::T const *,faiss::HeapArray< faiss::CMin< int,long > >::TI const *)\n"
+    "    faiss::HeapArray< faiss::CMin< int,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMin< int,long > >::T const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_reorder(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_reorder" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  (arg1)->reorder();
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_minheap_array_t_per_line_extrema(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::T *arg2 = (faiss::HeapArray< faiss::CMin< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMin< int,long > >::TI *arg3 = (faiss::HeapArray< faiss::CMin< int,long > >::TI *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_minheap_array_t_per_line_extrema", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_minheap_array_t_per_line_extrema" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "int_minheap_array_t_per_line_extrema" "', argument " "2"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::T *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::T * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_minheap_array_t_per_line_extrema" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMin< int,long > >::TI *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,long > >::TI * >(argp3);
+  ((faiss::HeapArray< faiss::CMin< int,int64_t > > const *)arg1)->per_line_extrema(arg2,arg3);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_int_minheap_array_t(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_int_minheap_array_t", 0, 0, 0)) SWIG_fail;
+  result = (faiss::HeapArray< faiss::CMin< int,int64_t > > *)new faiss::HeapArray< faiss::CMin< int,int64_t > >();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_int_minheap_array_t(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMin< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMin< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_int_minheap_array_t" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMin< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMin< int,int64_t > > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *int_minheap_array_t_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *int_minheap_array_t_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_nh_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_maxheap_array_t_nh_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_nh_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_maxheap_array_t_nh_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nh = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_nh_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_nh_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  result = (size_t) ((arg1)->nh);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_k_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_maxheap_array_t_k_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_k_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_maxheap_array_t_k_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->k = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_k_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_k_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  result = (size_t) ((arg1)->k);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_ids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::TI *arg2 = (faiss::HeapArray< faiss::CMax< float,long > >::TI *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_maxheap_array_t_ids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_ids_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "float_maxheap_array_t_ids_set" "', argument " "2"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::TI *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::TI * >(argp2);
+  if (arg1) (arg1)->ids = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_ids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::HeapArray< faiss::CMax< float,long > >::TI *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_ids_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  result = (faiss::HeapArray< faiss::CMax< float,long > >::TI *) ((arg1)->ids);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_val_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::T *arg2 = (faiss::HeapArray< faiss::CMax< float,long > >::T *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_maxheap_array_t_val_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_val_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "float_maxheap_array_t_val_set" "', argument " "2"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::T *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::T * >(argp2);
+  if (arg1) (arg1)->val = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_val_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::HeapArray< faiss::CMax< float,long > >::T *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_val_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  result = (faiss::HeapArray< faiss::CMax< float,long > >::T *) ((arg1)->val);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_get_val(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::HeapArray< faiss::CMax< float,long > >::T *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_maxheap_array_t_get_val", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_get_val" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_maxheap_array_t_get_val" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (faiss::HeapArray< faiss::CMax< float,long > >::T *)(arg1)->get_val(arg2);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_get_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::HeapArray< faiss::CMax< float,long > >::TI *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_maxheap_array_t_get_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_get_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_maxheap_array_t_get_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (faiss::HeapArray< faiss::CMax< float,long > >::TI *)(arg1)->get_ids(arg2);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_heapify(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_heapify" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  (arg1)->heapify();
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_addn__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::TI arg4 ;
+  size_t arg5 ;
+  int64_t arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  long val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_maxheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_maxheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::T * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "float_maxheap_array_t_addn" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::TI""'");
+  } 
+  arg4 = static_cast< faiss::HeapArray< faiss::CMax< float,long > >::TI >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "float_maxheap_array_t_addn" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_long(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "float_maxheap_array_t_addn" "', argument " "6"" of type '" "int64_t""'");
+  } 
+  arg6 = static_cast< int64_t >(val6);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMax< float,long > >::T const *)arg3,arg4,arg5,arg6);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_addn__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::TI arg4 ;
+  size_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_maxheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_maxheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::T * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "float_maxheap_array_t_addn" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::TI""'");
+  } 
+  arg4 = static_cast< faiss::HeapArray< faiss::CMax< float,long > >::TI >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "float_maxheap_array_t_addn" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMax< float,long > >::T const *)arg3,arg4,arg5);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_addn__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::TI arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_maxheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_maxheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::T * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "float_maxheap_array_t_addn" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::TI""'");
+  } 
+  arg4 = static_cast< faiss::HeapArray< faiss::CMax< float,long > >::TI >(val4);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMax< float,long > >::T const *)arg3,arg4);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_addn__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< float,long > >::T *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_maxheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_maxheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::T * >(argp3);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMax< float,long > >::T const *)arg3);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_addn(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "float_maxheap_array_t_addn", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_float_maxheap_array_t_addn__SWIG_3(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_float_maxheap_array_t_addn__SWIG_2(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_float_maxheap_array_t_addn__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_long(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_float_maxheap_array_t_addn__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'float_maxheap_array_t_addn'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::HeapArray< faiss::CMax< float,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMax< float,long > >::T const *,faiss::HeapArray< faiss::CMax< float,long > >::TI,size_t,int64_t)\n"
+    "    faiss::HeapArray< faiss::CMax< float,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMax< float,long > >::T const *,faiss::HeapArray< faiss::CMax< float,long > >::TI,size_t)\n"
+    "    faiss::HeapArray< faiss::CMax< float,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMax< float,long > >::T const *,faiss::HeapArray< faiss::CMax< float,long > >::TI)\n"
+    "    faiss::HeapArray< faiss::CMax< float,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMax< float,long > >::T const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_addn_with_ids__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMax< float,long > >::TI *) 0 ;
+  int64_t arg5 ;
+  size_t arg6 ;
+  int64_t arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  long val7 ;
+  int ecode7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::TI * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  ecode7 = SWIG_AsVal_long(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "7"" of type '" "int64_t""'");
+  } 
+  arg7 = static_cast< int64_t >(val7);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMax< float,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMax< float,long > >::TI const *)arg4,arg5,arg6,arg7);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_addn_with_ids__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMax< float,long > >::TI *) 0 ;
+  int64_t arg5 ;
+  size_t arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::TI * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMax< float,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMax< float,long > >::TI const *)arg4,arg5,arg6);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_addn_with_ids__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMax< float,long > >::TI *) 0 ;
+  int64_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::TI * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMax< float,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMax< float,long > >::TI const *)arg4,arg5);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_addn_with_ids__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMax< float,long > >::TI *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::TI * >(argp4);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMax< float,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMax< float,long > >::TI const *)arg4);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_addn_with_ids__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< float,long > >::T *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_maxheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::T * >(argp3);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMax< float,long > >::T const *)arg3);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_addn_with_ids(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "float_maxheap_array_t_addn_with_ids", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_float_maxheap_array_t_addn_with_ids__SWIG_4(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_float_maxheap_array_t_addn_with_ids__SWIG_3(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_float_maxheap_array_t_addn_with_ids__SWIG_2(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_size_t(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_float_maxheap_array_t_addn_with_ids__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_float, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_size_t(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_long(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  return _wrap_float_maxheap_array_t_addn_with_ids__SWIG_0(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'float_maxheap_array_t_addn_with_ids'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::HeapArray< faiss::CMax< float,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMax< float,long > >::T const *,faiss::HeapArray< faiss::CMax< float,long > >::TI const *,int64_t,size_t,int64_t)\n"
+    "    faiss::HeapArray< faiss::CMax< float,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMax< float,long > >::T const *,faiss::HeapArray< faiss::CMax< float,long > >::TI const *,int64_t,size_t)\n"
+    "    faiss::HeapArray< faiss::CMax< float,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMax< float,long > >::T const *,faiss::HeapArray< faiss::CMax< float,long > >::TI const *,int64_t)\n"
+    "    faiss::HeapArray< faiss::CMax< float,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMax< float,long > >::T const *,faiss::HeapArray< faiss::CMax< float,long > >::TI const *)\n"
+    "    faiss::HeapArray< faiss::CMax< float,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMax< float,long > >::T const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_reorder(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_reorder" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  (arg1)->reorder();
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_float_maxheap_array_t_per_line_extrema(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::T *arg2 = (faiss::HeapArray< faiss::CMax< float,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< float,long > >::TI *arg3 = (faiss::HeapArray< faiss::CMax< float,long > >::TI *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "float_maxheap_array_t_per_line_extrema", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "float_maxheap_array_t_per_line_extrema" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "float_maxheap_array_t_per_line_extrema" "', argument " "2"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::T *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::T * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "float_maxheap_array_t_per_line_extrema" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< float,long > >::TI *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,long > >::TI * >(argp3);
+  ((faiss::HeapArray< faiss::CMax< float,int64_t > > const *)arg1)->per_line_extrema(arg2,arg3);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_float_maxheap_array_t(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_float_maxheap_array_t", 0, 0, 0)) SWIG_fail;
+  result = (faiss::HeapArray< faiss::CMax< float,int64_t > > *)new faiss::HeapArray< faiss::CMax< float,int64_t > >();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_float_maxheap_array_t(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< float,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< float,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_float_maxheap_array_t" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< float,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< float,int64_t > > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *float_maxheap_array_t_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *float_maxheap_array_t_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_nh_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_maxheap_array_t_nh_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_nh_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_maxheap_array_t_nh_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->nh = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_nh_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_nh_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  result = (size_t) ((arg1)->nh);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_k_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_maxheap_array_t_k_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_k_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_maxheap_array_t_k_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->k = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_k_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_k_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  result = (size_t) ((arg1)->k);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_ids_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::TI *arg2 = (faiss::HeapArray< faiss::CMax< int,long > >::TI *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_maxheap_array_t_ids_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_ids_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "int_maxheap_array_t_ids_set" "', argument " "2"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::TI *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::TI * >(argp2);
+  if (arg1) (arg1)->ids = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_ids_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::HeapArray< faiss::CMax< int,long > >::TI *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_ids_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  result = (faiss::HeapArray< faiss::CMax< int,long > >::TI *) ((arg1)->ids);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_val_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::T *arg2 = (faiss::HeapArray< faiss::CMax< int,long > >::T *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_maxheap_array_t_val_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_val_set" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "int_maxheap_array_t_val_set" "', argument " "2"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::T *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::T * >(argp2);
+  if (arg1) (arg1)->val = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_val_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::HeapArray< faiss::CMax< int,long > >::T *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_val_get" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  result = (faiss::HeapArray< faiss::CMax< int,long > >::T *) ((arg1)->val);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_int, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_get_val(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::HeapArray< faiss::CMax< int,long > >::T *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_maxheap_array_t_get_val", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_get_val" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_maxheap_array_t_get_val" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (faiss::HeapArray< faiss::CMax< int,long > >::T *)(arg1)->get_val(arg2);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_int, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_get_ids(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  faiss::HeapArray< faiss::CMax< int,long > >::TI *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_maxheap_array_t_get_ids", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_get_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_maxheap_array_t_get_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  result = (faiss::HeapArray< faiss::CMax< int,long > >::TI *)(arg1)->get_ids(arg2);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_heapify(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_heapify" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  (arg1)->heapify();
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_addn__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::TI arg4 ;
+  size_t arg5 ;
+  int64_t arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  long val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_maxheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_maxheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::T * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "int_maxheap_array_t_addn" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::TI""'");
+  } 
+  arg4 = static_cast< faiss::HeapArray< faiss::CMax< int,long > >::TI >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "int_maxheap_array_t_addn" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  ecode6 = SWIG_AsVal_long(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "int_maxheap_array_t_addn" "', argument " "6"" of type '" "int64_t""'");
+  } 
+  arg6 = static_cast< int64_t >(val6);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMax< int,long > >::T const *)arg3,arg4,arg5,arg6);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_addn__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::TI arg4 ;
+  size_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_maxheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_maxheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::T * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "int_maxheap_array_t_addn" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::TI""'");
+  } 
+  arg4 = static_cast< faiss::HeapArray< faiss::CMax< int,long > >::TI >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "int_maxheap_array_t_addn" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMax< int,long > >::T const *)arg3,arg4,arg5);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_addn__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::TI arg4 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  long val4 ;
+  int ecode4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_maxheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_maxheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::T * >(argp3);
+  ecode4 = SWIG_AsVal_long(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "int_maxheap_array_t_addn" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::TI""'");
+  } 
+  arg4 = static_cast< faiss::HeapArray< faiss::CMax< int,long > >::TI >(val4);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMax< int,long > >::T const *)arg3,arg4);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_addn__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< int,long > >::T *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_addn" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_maxheap_array_t_addn" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_maxheap_array_t_addn" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::T * >(argp3);
+  (arg1)->addn(arg2,(faiss::HeapArray< faiss::CMax< int,long > >::T const *)arg3);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_addn(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "int_maxheap_array_t_addn", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_int_maxheap_array_t_addn__SWIG_3(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            return _wrap_int_maxheap_array_t_addn__SWIG_2(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_int_maxheap_array_t_addn__SWIG_1(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          {
+            int res = SWIG_AsVal_long(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_long(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_int_maxheap_array_t_addn__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'int_maxheap_array_t_addn'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::HeapArray< faiss::CMax< int,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMax< int,long > >::T const *,faiss::HeapArray< faiss::CMax< int,long > >::TI,size_t,int64_t)\n"
+    "    faiss::HeapArray< faiss::CMax< int,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMax< int,long > >::T const *,faiss::HeapArray< faiss::CMax< int,long > >::TI,size_t)\n"
+    "    faiss::HeapArray< faiss::CMax< int,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMax< int,long > >::T const *,faiss::HeapArray< faiss::CMax< int,long > >::TI)\n"
+    "    faiss::HeapArray< faiss::CMax< int,int64_t > >::addn(size_t,faiss::HeapArray< faiss::CMax< int,long > >::T const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_addn_with_ids__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMax< int,long > >::TI *) 0 ;
+  int64_t arg5 ;
+  size_t arg6 ;
+  int64_t arg7 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  long val7 ;
+  int ecode7 = 0 ;
+  
+  if ((nobjs < 7) || (nobjs > 7)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::TI * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  ecode7 = SWIG_AsVal_long(swig_obj[6], &val7);
+  if (!SWIG_IsOK(ecode7)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode7), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "7"" of type '" "int64_t""'");
+  } 
+  arg7 = static_cast< int64_t >(val7);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMax< int,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMax< int,long > >::TI const *)arg4,arg5,arg6,arg7);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_addn_with_ids__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMax< int,long > >::TI *) 0 ;
+  int64_t arg5 ;
+  size_t arg6 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  size_t val6 ;
+  int ecode6 = 0 ;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::TI * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  ecode6 = SWIG_AsVal_size_t(swig_obj[5], &val6);
+  if (!SWIG_IsOK(ecode6)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode6), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "6"" of type '" "size_t""'");
+  } 
+  arg6 = static_cast< size_t >(val6);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMax< int,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMax< int,long > >::TI const *)arg4,arg5,arg6);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_addn_with_ids__SWIG_2(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMax< int,long > >::TI *) 0 ;
+  int64_t arg5 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  long val5 ;
+  int ecode5 = 0 ;
+  
+  if ((nobjs < 5) || (nobjs > 5)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::TI * >(argp4);
+  ecode5 = SWIG_AsVal_long(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "5"" of type '" "int64_t""'");
+  } 
+  arg5 = static_cast< int64_t >(val5);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMax< int,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMax< int,long > >::TI const *)arg4,arg5);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_addn_with_ids__SWIG_3(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::TI *arg4 = (faiss::HeapArray< faiss::CMax< int,long > >::TI *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  
+  if ((nobjs < 4) || (nobjs > 4)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::T * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "4"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::TI const *""'"); 
+  }
+  arg4 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::TI * >(argp4);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMax< int,long > >::T const *)arg3,(faiss::HeapArray< faiss::CMax< int,long > >::TI const *)arg4);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_addn_with_ids__SWIG_4(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  size_t arg2 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::T *arg3 = (faiss::HeapArray< faiss::CMax< int,long > >::T *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  
+  if ((nobjs < 3) || (nobjs > 3)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_maxheap_array_t_addn_with_ids" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::T const *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::T * >(argp3);
+  (arg1)->addn_with_ids(arg2,(faiss::HeapArray< faiss::CMax< int,long > >::T const *)arg3);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_addn_with_ids(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[8] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "int_maxheap_array_t_addn_with_ids", 0, 7, argv))) SWIG_fail;
+  --argc;
+  if (argc == 3) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          return _wrap_int_maxheap_array_t_addn_with_ids__SWIG_4(self, argc, argv);
+        }
+      }
+    }
+  }
+  if (argc == 4) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            return _wrap_int_maxheap_array_t_addn_with_ids__SWIG_3(self, argc, argv);
+          }
+        }
+      }
+    }
+  }
+  if (argc == 5) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              return _wrap_int_maxheap_array_t_addn_with_ids__SWIG_2(self, argc, argv);
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_size_t(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                return _wrap_int_maxheap_array_t_addn_with_ids__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 7) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      {
+        int res = SWIG_AsVal_size_t(argv[1], NULL);
+        _v = SWIG_CheckState(res);
+      }
+      if (_v) {
+        void *vptr = 0;
+        int res = SWIG_ConvertPtr(argv[2], &vptr, SWIGTYPE_p_int, 0);
+        _v = SWIG_CheckState(res);
+        if (_v) {
+          void *vptr = 0;
+          int res = SWIG_ConvertPtr(argv[3], &vptr, SWIGTYPE_p_long, 0);
+          _v = SWIG_CheckState(res);
+          if (_v) {
+            {
+              int res = SWIG_AsVal_long(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              {
+                int res = SWIG_AsVal_size_t(argv[5], NULL);
+                _v = SWIG_CheckState(res);
+              }
+              if (_v) {
+                {
+                  int res = SWIG_AsVal_long(argv[6], NULL);
+                  _v = SWIG_CheckState(res);
+                }
+                if (_v) {
+                  return _wrap_int_maxheap_array_t_addn_with_ids__SWIG_0(self, argc, argv);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'int_maxheap_array_t_addn_with_ids'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::HeapArray< faiss::CMax< int,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMax< int,long > >::T const *,faiss::HeapArray< faiss::CMax< int,long > >::TI const *,int64_t,size_t,int64_t)\n"
+    "    faiss::HeapArray< faiss::CMax< int,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMax< int,long > >::T const *,faiss::HeapArray< faiss::CMax< int,long > >::TI const *,int64_t,size_t)\n"
+    "    faiss::HeapArray< faiss::CMax< int,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMax< int,long > >::T const *,faiss::HeapArray< faiss::CMax< int,long > >::TI const *,int64_t)\n"
+    "    faiss::HeapArray< faiss::CMax< int,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMax< int,long > >::T const *,faiss::HeapArray< faiss::CMax< int,long > >::TI const *)\n"
+    "    faiss::HeapArray< faiss::CMax< int,int64_t > >::addn_with_ids(size_t,faiss::HeapArray< faiss::CMax< int,long > >::T const *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_reorder(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_reorder" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  (arg1)->reorder();
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_int_maxheap_array_t_per_line_extrema(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::T *arg2 = (faiss::HeapArray< faiss::CMax< int,long > >::T *) 0 ;
+  faiss::HeapArray< faiss::CMax< int,long > >::TI *arg3 = (faiss::HeapArray< faiss::CMax< int,long > >::TI *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  PyObject *swig_obj[3] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "int_maxheap_array_t_per_line_extrema", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "int_maxheap_array_t_per_line_extrema" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "int_maxheap_array_t_per_line_extrema" "', argument " "2"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::T *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::T * >(argp2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "int_maxheap_array_t_per_line_extrema" "', argument " "3"" of type '" "faiss::HeapArray< faiss::CMax< int,long > >::TI *""'"); 
+  }
+  arg3 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,long > >::TI * >(argp3);
+  ((faiss::HeapArray< faiss::CMax< int,int64_t > > const *)arg1)->per_line_extrema(arg2,arg3);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_int_maxheap_array_t(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_int_maxheap_array_t", 0, 0, 0)) SWIG_fail;
+  result = (faiss::HeapArray< faiss::CMax< int,int64_t > > *)new faiss::HeapArray< faiss::CMax< int,int64_t > >();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_int_maxheap_array_t(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::HeapArray< faiss::CMax< int,int64_t > > *arg1 = (faiss::HeapArray< faiss::CMax< int,int64_t > > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_int_maxheap_array_t" "', argument " "1"" of type '" "faiss::HeapArray< faiss::CMax< int,int64_t > > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::HeapArray< faiss::CMax< int,int64_t > > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *int_maxheap_array_t_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *int_maxheap_array_t_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_CMin_float_partition_fuzzy(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::CMin< float,int64_t >::T *arg1 = (faiss::CMin< float,int64_t >::T *) 0 ;
+  faiss::CMin< float,int64_t >::TI *arg2 = (faiss::CMin< float,int64_t >::TI *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  size_t *arg6 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  faiss::CMin< float,int64_t >::T result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "CMin_float_partition_fuzzy", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "CMin_float_partition_fuzzy" "', argument " "1"" of type '" "faiss::CMin< float,int64_t >::T *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::CMin< float,int64_t >::T * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "CMin_float_partition_fuzzy" "', argument " "2"" of type '" "faiss::CMin< float,int64_t >::TI *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::CMin< float,int64_t >::TI * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "CMin_float_partition_fuzzy" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "CMin_float_partition_fuzzy" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "CMin_float_partition_fuzzy" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "CMin_float_partition_fuzzy" "', argument " "6"" of type '" "size_t *""'"); 
+  }
+  arg6 = reinterpret_cast< size_t * >(argp6);
+  result = (faiss::CMin< float,int64_t >::T)faiss::SWIGTEMPLATEDISAMBIGUATOR partition_fuzzy< faiss::CMin< float,int64_t > >(arg1,arg2,arg3,arg4,arg5,arg6);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_CMax_float_partition_fuzzy(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::CMax< float,int64_t >::T *arg1 = (faiss::CMax< float,int64_t >::T *) 0 ;
+  faiss::CMax< float,int64_t >::TI *arg2 = (faiss::CMax< float,int64_t >::TI *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  size_t *arg6 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  PyObject *swig_obj[6] ;
+  faiss::CMax< float,int64_t >::T result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "CMax_float_partition_fuzzy", 6, 6, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_float, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "CMax_float_partition_fuzzy" "', argument " "1"" of type '" "faiss::CMax< float,int64_t >::T *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::CMax< float,int64_t >::T * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "CMax_float_partition_fuzzy" "', argument " "2"" of type '" "faiss::CMax< float,int64_t >::TI *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::CMax< float,int64_t >::TI * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "CMax_float_partition_fuzzy" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "CMax_float_partition_fuzzy" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "CMax_float_partition_fuzzy" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "CMax_float_partition_fuzzy" "', argument " "6"" of type '" "size_t *""'"); 
+  }
+  arg6 = reinterpret_cast< size_t * >(argp6);
+  result = (faiss::CMax< float,int64_t >::T)faiss::SWIGTEMPLATEDISAMBIGUATOR partition_fuzzy< faiss::CMax< float,int64_t > >(arg1,arg2,arg3,arg4,arg5,arg6);
+  resultobj = SWIG_From_float(static_cast< float >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_tab_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  faiss::AlignedTableTightAlloc< unsigned char,32 > *arg2 = (faiss::AlignedTableTightAlloc< unsigned char,32 > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AlignedTableUint8_tab_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint8_tab_set" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__AlignedTableTightAllocT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AlignedTableUint8_tab_set" "', argument " "2"" of type '" "faiss::AlignedTableTightAlloc< unsigned char,32 > *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::AlignedTableTightAlloc< unsigned char,32 > * >(argp2);
+  if (arg1) (arg1)->tab = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_tab_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AlignedTableTightAlloc< unsigned char,32 > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint8_tab_get" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  result = (faiss::AlignedTableTightAlloc< unsigned char,32 > *)& ((arg1)->tab);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AlignedTableTightAllocT_unsigned_char_32_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_numel_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AlignedTableUint8_numel_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint8_numel_set" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AlignedTableUint8_numel_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->numel = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_numel_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint8_numel_get" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  result = (size_t) ((arg1)->numel);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_round_capacity(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "AlignedTableUint8_round_capacity" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  result = (size_t)faiss::AlignedTable< uint8_t >::SWIGTEMPLATEDISAMBIGUATOR round_capacity(arg1);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AlignedTableUint8__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  result = (faiss::AlignedTable< uint8_t > *)new faiss::AlignedTable< uint8_t >();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AlignedTableUint8__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  faiss::AlignedTable< uint8_t > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_AlignedTableUint8" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  result = (faiss::AlignedTable< uint8_t > *)new faiss::AlignedTable< uint8_t >(arg1);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AlignedTableUint8(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_AlignedTableUint8", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_AlignedTableUint8__SWIG_0(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_AlignedTableUint8__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_AlignedTableUint8'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::AlignedTable< uint8_t >::AlignedTable()\n"
+    "    faiss::AlignedTable< uint8_t >::AlignedTable(size_t)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_itemsize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint8_itemsize" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  result = (size_t)((faiss::AlignedTable< uint8_t > const *)arg1)->itemsize();
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AlignedTableUint8_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint8_resize" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AlignedTableUint8_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  (arg1)->resize(arg2);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint8_clear" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  (arg1)->clear();
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint8_size" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  result = (size_t)((faiss::AlignedTable< uint8_t > const *)arg1)->size();
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_nbytes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint8_nbytes" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  result = (size_t)((faiss::AlignedTable< uint8_t > const *)arg1)->nbytes();
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_get__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned char *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint8_get" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  result = (unsigned char *)(arg1)->get();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_get__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned char *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint8_get" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  result = (unsigned char *)((faiss::AlignedTable< uint8_t > const *)arg1)->get();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_get(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "AlignedTableUint8_get", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_AlignedTableUint8_get__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_AlignedTableUint8_get__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'AlignedTableUint8_get'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::AlignedTable< uint8_t >::get()\n"
+    "    faiss::AlignedTable< uint8_t >::get() const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_data__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned char *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint8_data" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  result = (unsigned char *)(arg1)->data();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_data__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned char *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint8_data" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  result = (unsigned char *)((faiss::AlignedTable< uint8_t > const *)arg1)->data();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint8_data(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "AlignedTableUint8_data", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_AlignedTableUint8_data__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_AlignedTableUint8_data__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'AlignedTableUint8_data'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::AlignedTable< uint8_t >::data()\n"
+    "    faiss::AlignedTable< uint8_t >::data() const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_AlignedTableUint8(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint8_t > *arg1 = (faiss::AlignedTable< uint8_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_AlignedTableUint8" "', argument " "1"" of type '" "faiss::AlignedTable< uint8_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint8_t > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *AlignedTableUint8_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__AlignedTableT_unsigned_char_32_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *AlignedTableUint8_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_tab_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  faiss::AlignedTableTightAlloc< unsigned short,32 > *arg2 = (faiss::AlignedTableTightAlloc< unsigned short,32 > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AlignedTableUint16_tab_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint16_tab_set" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__AlignedTableTightAllocT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AlignedTableUint16_tab_set" "', argument " "2"" of type '" "faiss::AlignedTableTightAlloc< unsigned short,32 > *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::AlignedTableTightAlloc< unsigned short,32 > * >(argp2);
+  if (arg1) (arg1)->tab = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_tab_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AlignedTableTightAlloc< unsigned short,32 > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint16_tab_get" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  result = (faiss::AlignedTableTightAlloc< unsigned short,32 > *)& ((arg1)->tab);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AlignedTableTightAllocT_unsigned_short_32_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_numel_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AlignedTableUint16_numel_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint16_numel_set" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AlignedTableUint16_numel_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->numel = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_numel_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint16_numel_get" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  result = (size_t) ((arg1)->numel);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_round_capacity(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "AlignedTableUint16_round_capacity" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  result = (size_t)faiss::AlignedTable< uint16_t >::SWIGTEMPLATEDISAMBIGUATOR round_capacity(arg1);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AlignedTableUint16__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  result = (faiss::AlignedTable< uint16_t > *)new faiss::AlignedTable< uint16_t >();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AlignedTableUint16__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  faiss::AlignedTable< uint16_t > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_AlignedTableUint16" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  result = (faiss::AlignedTable< uint16_t > *)new faiss::AlignedTable< uint16_t >(arg1);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AlignedTableUint16(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_AlignedTableUint16", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_AlignedTableUint16__SWIG_0(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_AlignedTableUint16__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_AlignedTableUint16'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::AlignedTable< uint16_t >::AlignedTable()\n"
+    "    faiss::AlignedTable< uint16_t >::AlignedTable(size_t)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_itemsize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint16_itemsize" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  result = (size_t)((faiss::AlignedTable< uint16_t > const *)arg1)->itemsize();
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AlignedTableUint16_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint16_resize" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AlignedTableUint16_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  (arg1)->resize(arg2);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint16_clear" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  (arg1)->clear();
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint16_size" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  result = (size_t)((faiss::AlignedTable< uint16_t > const *)arg1)->size();
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_nbytes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint16_nbytes" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  result = (size_t)((faiss::AlignedTable< uint16_t > const *)arg1)->nbytes();
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_get__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned short *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint16_get" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  result = (unsigned short *)(arg1)->get();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_short, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_get__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned short *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint16_get" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  result = (unsigned short *)((faiss::AlignedTable< uint16_t > const *)arg1)->get();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_short, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_get(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "AlignedTableUint16_get", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_AlignedTableUint16_get__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_AlignedTableUint16_get__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'AlignedTableUint16_get'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::AlignedTable< uint16_t >::get()\n"
+    "    faiss::AlignedTable< uint16_t >::get() const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_data__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned short *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint16_data" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  result = (unsigned short *)(arg1)->data();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_short, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_data__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  unsigned short *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableUint16_data" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  result = (unsigned short *)((faiss::AlignedTable< uint16_t > const *)arg1)->data();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_short, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableUint16_data(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "AlignedTableUint16_data", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_AlignedTableUint16_data__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_AlignedTableUint16_data__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'AlignedTableUint16_data'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::AlignedTable< uint16_t >::data()\n"
+    "    faiss::AlignedTable< uint16_t >::data() const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_AlignedTableUint16(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< uint16_t > *arg1 = (faiss::AlignedTable< uint16_t > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_AlignedTableUint16" "', argument " "1"" of type '" "faiss::AlignedTable< uint16_t > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< uint16_t > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *AlignedTableUint16_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__AlignedTableT_unsigned_short_32_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *AlignedTableUint16_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_tab_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  faiss::AlignedTableTightAlloc< float,32 > *arg2 = (faiss::AlignedTableTightAlloc< float,32 > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AlignedTableFloat32_tab_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableFloat32_tab_set" "', argument " "1"" of type '" "faiss::AlignedTable< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_faiss__AlignedTableTightAllocT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "AlignedTableFloat32_tab_set" "', argument " "2"" of type '" "faiss::AlignedTableTightAlloc< float,32 > *""'"); 
+  }
+  arg2 = reinterpret_cast< faiss::AlignedTableTightAlloc< float,32 > * >(argp2);
+  if (arg1) (arg1)->tab = *arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_tab_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::AlignedTableTightAlloc< float,32 > *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableFloat32_tab_get" "', argument " "1"" of type '" "faiss::AlignedTable< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  result = (faiss::AlignedTableTightAlloc< float,32 > *)& ((arg1)->tab);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AlignedTableTightAllocT_float_32_t, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_numel_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AlignedTableFloat32_numel_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableFloat32_numel_set" "', argument " "1"" of type '" "faiss::AlignedTable< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AlignedTableFloat32_numel_set" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  if (arg1) (arg1)->numel = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_numel_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableFloat32_numel_get" "', argument " "1"" of type '" "faiss::AlignedTable< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  result = (size_t) ((arg1)->numel);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_round_capacity(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "AlignedTableFloat32_round_capacity" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  result = (size_t)faiss::AlignedTable< float >::SWIGTEMPLATEDISAMBIGUATOR round_capacity(arg1);
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AlignedTableFloat32__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **SWIGUNUSEDPARM(swig_obj)) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *result = 0 ;
+  
+  if ((nobjs < 0) || (nobjs > 0)) SWIG_fail;
+  result = (faiss::AlignedTable< float > *)new faiss::AlignedTable< float >();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AlignedTableT_float_32_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AlignedTableFloat32__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  size_t arg1 ;
+  size_t val1 ;
+  int ecode1 = 0 ;
+  faiss::AlignedTable< float > *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  ecode1 = SWIG_AsVal_size_t(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "new_AlignedTableFloat32" "', argument " "1"" of type '" "size_t""'");
+  } 
+  arg1 = static_cast< size_t >(val1);
+  result = (faiss::AlignedTable< float > *)new faiss::AlignedTable< float >(arg1);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_faiss__AlignedTableT_float_32_t, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_AlignedTableFloat32(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "new_AlignedTableFloat32", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 0) {
+    return _wrap_new_AlignedTableFloat32__SWIG_0(self, argc, argv);
+  }
+  if (argc == 1) {
+    int _v;
+    {
+      int res = SWIG_AsVal_size_t(argv[0], NULL);
+      _v = SWIG_CheckState(res);
+    }
+    if (_v) {
+      return _wrap_new_AlignedTableFloat32__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'new_AlignedTableFloat32'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::AlignedTable< float >::AlignedTable()\n"
+    "    faiss::AlignedTable< float >::AlignedTable(size_t)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_itemsize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableFloat32_itemsize" "', argument " "1"" of type '" "faiss::AlignedTable< float > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  result = (size_t)((faiss::AlignedTable< float > const *)arg1)->itemsize();
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_resize(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  size_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "AlignedTableFloat32_resize", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableFloat32_resize" "', argument " "1"" of type '" "faiss::AlignedTable< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "AlignedTableFloat32_resize" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  (arg1)->resize(arg2);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_clear(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableFloat32_clear" "', argument " "1"" of type '" "faiss::AlignedTable< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  (arg1)->clear();
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_size(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableFloat32_size" "', argument " "1"" of type '" "faiss::AlignedTable< float > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  result = (size_t)((faiss::AlignedTable< float > const *)arg1)->size();
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_nbytes(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  size_t result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableFloat32_nbytes" "', argument " "1"" of type '" "faiss::AlignedTable< float > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  result = (size_t)((faiss::AlignedTable< float > const *)arg1)->nbytes();
+  resultobj = SWIG_From_size_t(static_cast< size_t >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_get__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableFloat32_get" "', argument " "1"" of type '" "faiss::AlignedTable< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  result = (float *)(arg1)->get();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_get__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableFloat32_get" "', argument " "1"" of type '" "faiss::AlignedTable< float > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  result = (float *)((faiss::AlignedTable< float > const *)arg1)->get();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_get(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "AlignedTableFloat32_get", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_AlignedTableFloat32_get__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_AlignedTableFloat32_get__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'AlignedTableFloat32_get'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::AlignedTable< float >::get()\n"
+    "    faiss::AlignedTable< float >::get() const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_data__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableFloat32_data" "', argument " "1"" of type '" "faiss::AlignedTable< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  result = (float *)(arg1)->data();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_data__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  float *result = 0 ;
+  
+  if ((nobjs < 1) || (nobjs > 1)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "AlignedTableFloat32_data" "', argument " "1"" of type '" "faiss::AlignedTable< float > const *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  result = (float *)((faiss::AlignedTable< float > const *)arg1)->data();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_AlignedTableFloat32_data(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[2] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "AlignedTableFloat32_data", 0, 1, argv))) SWIG_fail;
+  --argc;
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_AlignedTableFloat32_data__SWIG_0(self, argc, argv);
+    }
+  }
+  if (argc == 1) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_faiss__AlignedTableT_float_32_t, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      return _wrap_AlignedTableFloat32_data__SWIG_1(self, argc, argv);
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'AlignedTableFloat32_data'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    faiss::AlignedTable< float >::data()\n"
+    "    faiss::AlignedTable< float >::data() const\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_AlignedTableFloat32(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  faiss::AlignedTable< float > *arg1 = (faiss::AlignedTable< float > *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_faiss__AlignedTableT_float_32_t, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_AlignedTableFloat32" "', argument " "1"" of type '" "faiss::AlignedTable< float > *""'"); 
+  }
+  arg1 = reinterpret_cast< faiss::AlignedTable< float > * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *AlignedTableFloat32_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_faiss__AlignedTableT_float_32_t, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *AlignedTableFloat32_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_CMax_uint16_partition_fuzzy__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  uint16_t *arg1 = (uint16_t *) 0 ;
+  int64_t *arg2 = (int64_t *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  size_t *arg6 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  uint16_t result;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_short, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "CMax_uint16_partition_fuzzy" "', argument " "1"" of type '" "uint16_t *""'"); 
+  }
+  arg1 = reinterpret_cast< uint16_t * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "CMax_uint16_partition_fuzzy" "', argument " "2"" of type '" "int64_t *""'"); 
+  }
+  arg2 = reinterpret_cast< int64_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "CMax_uint16_partition_fuzzy" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "CMax_uint16_partition_fuzzy" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "CMax_uint16_partition_fuzzy" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "CMax_uint16_partition_fuzzy" "', argument " "6"" of type '" "size_t *""'"); 
+  }
+  arg6 = reinterpret_cast< size_t * >(argp6);
+  result = (uint16_t)CMax_uint16_partition_fuzzy(arg1,arg2,arg3,arg4,arg5,arg6);
+  resultobj = SWIG_From_unsigned_SS_short(static_cast< unsigned short >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_CMin_uint16_partition_fuzzy__SWIG_0(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  uint16_t *arg1 = (uint16_t *) 0 ;
+  int64_t *arg2 = (int64_t *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  size_t *arg6 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  uint16_t result;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_short, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "CMin_uint16_partition_fuzzy" "', argument " "1"" of type '" "uint16_t *""'"); 
+  }
+  arg1 = reinterpret_cast< uint16_t * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "CMin_uint16_partition_fuzzy" "', argument " "2"" of type '" "int64_t *""'"); 
+  }
+  arg2 = reinterpret_cast< int64_t * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "CMin_uint16_partition_fuzzy" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "CMin_uint16_partition_fuzzy" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "CMin_uint16_partition_fuzzy" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "CMin_uint16_partition_fuzzy" "', argument " "6"" of type '" "size_t *""'"); 
+  }
+  arg6 = reinterpret_cast< size_t * >(argp6);
+  result = (uint16_t)CMin_uint16_partition_fuzzy(arg1,arg2,arg3,arg4,arg5,arg6);
+  resultobj = SWIG_From_unsigned_SS_short(static_cast< unsigned short >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_CMax_uint16_partition_fuzzy__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  uint16_t *arg1 = (uint16_t *) 0 ;
+  int *arg2 = (int *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  size_t *arg6 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  uint16_t result;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_short, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "CMax_uint16_partition_fuzzy" "', argument " "1"" of type '" "uint16_t *""'"); 
+  }
+  arg1 = reinterpret_cast< uint16_t * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "CMax_uint16_partition_fuzzy" "', argument " "2"" of type '" "int *""'"); 
+  }
+  arg2 = reinterpret_cast< int * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "CMax_uint16_partition_fuzzy" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "CMax_uint16_partition_fuzzy" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "CMax_uint16_partition_fuzzy" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "CMax_uint16_partition_fuzzy" "', argument " "6"" of type '" "size_t *""'"); 
+  }
+  arg6 = reinterpret_cast< size_t * >(argp6);
+  result = (uint16_t)CMax_uint16_partition_fuzzy(arg1,arg2,arg3,arg4,arg5,arg6);
+  resultobj = SWIG_From_unsigned_SS_short(static_cast< unsigned short >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_CMax_uint16_partition_fuzzy(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "CMax_uint16_partition_fuzzy", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_unsigned_short, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_long, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_unsigned_long, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_CMax_uint16_partition_fuzzy__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_unsigned_short, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_int, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_unsigned_long, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_CMax_uint16_partition_fuzzy__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'CMax_uint16_partition_fuzzy'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    CMax_uint16_partition_fuzzy(uint16_t *,int64_t *,size_t,size_t,size_t,size_t *)\n"
+    "    CMax_uint16_partition_fuzzy(uint16_t *,int *,size_t,size_t,size_t,size_t *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_CMin_uint16_partition_fuzzy__SWIG_1(PyObject *SWIGUNUSEDPARM(self), Py_ssize_t nobjs, PyObject **swig_obj) {
+  PyObject *resultobj = 0;
+  uint16_t *arg1 = (uint16_t *) 0 ;
+  int *arg2 = (int *) 0 ;
+  size_t arg3 ;
+  size_t arg4 ;
+  size_t arg5 ;
+  size_t *arg6 = (size_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 = 0 ;
+  int res2 = 0 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  size_t val4 ;
+  int ecode4 = 0 ;
+  size_t val5 ;
+  int ecode5 = 0 ;
+  void *argp6 = 0 ;
+  int res6 = 0 ;
+  uint16_t result;
+  
+  if ((nobjs < 6) || (nobjs > 6)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_unsigned_short, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "CMin_uint16_partition_fuzzy" "', argument " "1"" of type '" "uint16_t *""'"); 
+  }
+  arg1 = reinterpret_cast< uint16_t * >(argp1);
+  res2 = SWIG_ConvertPtr(swig_obj[1], &argp2,SWIGTYPE_p_int, 0 |  0 );
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "CMin_uint16_partition_fuzzy" "', argument " "2"" of type '" "int *""'"); 
+  }
+  arg2 = reinterpret_cast< int * >(argp2);
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "CMin_uint16_partition_fuzzy" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  ecode4 = SWIG_AsVal_size_t(swig_obj[3], &val4);
+  if (!SWIG_IsOK(ecode4)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode4), "in method '" "CMin_uint16_partition_fuzzy" "', argument " "4"" of type '" "size_t""'");
+  } 
+  arg4 = static_cast< size_t >(val4);
+  ecode5 = SWIG_AsVal_size_t(swig_obj[4], &val5);
+  if (!SWIG_IsOK(ecode5)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode5), "in method '" "CMin_uint16_partition_fuzzy" "', argument " "5"" of type '" "size_t""'");
+  } 
+  arg5 = static_cast< size_t >(val5);
+  res6 = SWIG_ConvertPtr(swig_obj[5], &argp6,SWIGTYPE_p_unsigned_long, 0 |  0 );
+  if (!SWIG_IsOK(res6)) {
+    SWIG_exception_fail(SWIG_ArgError(res6), "in method '" "CMin_uint16_partition_fuzzy" "', argument " "6"" of type '" "size_t *""'"); 
+  }
+  arg6 = reinterpret_cast< size_t * >(argp6);
+  result = (uint16_t)CMin_uint16_partition_fuzzy(arg1,arg2,arg3,arg4,arg5,arg6);
+  resultobj = SWIG_From_unsigned_SS_short(static_cast< unsigned short >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_CMin_uint16_partition_fuzzy(PyObject *self, PyObject *args) {
+  Py_ssize_t argc;
+  PyObject *argv[7] = {
+    0
+  };
+  
+  if (!(argc = SWIG_Python_UnpackTuple(args, "CMin_uint16_partition_fuzzy", 0, 6, argv))) SWIG_fail;
+  --argc;
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_unsigned_short, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_long, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_unsigned_long, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_CMin_uint16_partition_fuzzy__SWIG_0(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  if (argc == 6) {
+    int _v;
+    void *vptr = 0;
+    int res = SWIG_ConvertPtr(argv[0], &vptr, SWIGTYPE_p_unsigned_short, 0);
+    _v = SWIG_CheckState(res);
+    if (_v) {
+      void *vptr = 0;
+      int res = SWIG_ConvertPtr(argv[1], &vptr, SWIGTYPE_p_int, 0);
+      _v = SWIG_CheckState(res);
+      if (_v) {
+        {
+          int res = SWIG_AsVal_size_t(argv[2], NULL);
+          _v = SWIG_CheckState(res);
+        }
+        if (_v) {
+          {
+            int res = SWIG_AsVal_size_t(argv[3], NULL);
+            _v = SWIG_CheckState(res);
+          }
+          if (_v) {
+            {
+              int res = SWIG_AsVal_size_t(argv[4], NULL);
+              _v = SWIG_CheckState(res);
+            }
+            if (_v) {
+              void *vptr = 0;
+              int res = SWIG_ConvertPtr(argv[5], &vptr, SWIGTYPE_p_unsigned_long, 0);
+              _v = SWIG_CheckState(res);
+              if (_v) {
+                return _wrap_CMin_uint16_partition_fuzzy__SWIG_1(self, argc, argv);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  
+fail:
+  SWIG_Python_RaiseOrModifyTypeError("Wrong number or type of arguments for overloaded function 'CMin_uint16_partition_fuzzy'.\n"
+    "  Possible C/C++ prototypes are:\n"
+    "    CMin_uint16_partition_fuzzy(uint16_t *,int64_t *,size_t,size_t,size_t,size_t *)\n"
+    "    CMin_uint16_partition_fuzzy(uint16_t *,int *,size_t,size_t,size_t,size_t *)\n");
+  return 0;
+}
+
+
+SWIGINTERN PyObject *_wrap_omp_set_num_threads(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int arg1 ;
+  int val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_int(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "omp_set_num_threads" "', argument " "1"" of type '" "int""'");
+  } 
+  arg1 = static_cast< int >(val1);
+  omp_set_num_threads(arg1);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_omp_get_max_threads(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "omp_get_max_threads", 0, 0, 0)) SWIG_fail;
+  result = (int)omp_get_max_threads();
+  resultobj = SWIG_From_int(static_cast< int >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_memcpy(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  void *arg1 = (void *) 0 ;
+  void *arg2 = (void *) 0 ;
+  size_t arg3 ;
+  int res1 ;
+  int res2 ;
+  size_t val3 ;
+  int ecode3 = 0 ;
+  PyObject *swig_obj[3] ;
+  void *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "memcpy", 3, 3, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0],SWIG_as_voidptrptr(&arg1), 0, 0);
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "memcpy" "', argument " "1"" of type '" "void *""'"); 
+  }
+  res2 = SWIG_ConvertPtr(swig_obj[1],SWIG_as_voidptrptr(&arg2), 0, 0);
+  if (!SWIG_IsOK(res2)) {
+    SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "memcpy" "', argument " "2"" of type '" "void const *""'"); 
+  }
+  ecode3 = SWIG_AsVal_size_t(swig_obj[2], &val3);
+  if (!SWIG_IsOK(ecode3)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode3), "in method '" "memcpy" "', argument " "3"" of type '" "size_t""'");
+  } 
+  arg3 = static_cast< size_t >(val3);
+  result = (void *)memcpy(arg1,(void const *)arg2,arg3);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_void, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_cast_integer_to_uint8_ptr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  uint8_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "cast_integer_to_uint8_ptr" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  result = (uint8_t *)cast_integer_to_uint8_ptr(arg1);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_unsigned_char, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_cast_integer_to_float_ptr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  float *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "cast_integer_to_float_ptr" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  result = (float *)cast_integer_to_float_ptr(arg1);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_float, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_cast_integer_to_idx_t_ptr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  faiss::Index::idx_t *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "cast_integer_to_idx_t_ptr" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  result = (faiss::Index::idx_t *)cast_integer_to_idx_t_ptr(arg1);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_long, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_cast_integer_to_int_ptr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  int *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "cast_integer_to_int_ptr" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  result = (int *)cast_integer_to_int_ptr(arg1);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_int, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_cast_integer_to_void_ptr(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  int64_t arg1 ;
+  long val1 ;
+  int ecode1 = 0 ;
+  PyObject *swig_obj[1] ;
+  void *result = 0 ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  ecode1 = SWIG_AsVal_long(swig_obj[0], &val1);
+  if (!SWIG_IsOK(ecode1)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode1), "in method '" "cast_integer_to_void_ptr" "', argument " "1"" of type '" "int64_t""'");
+  } 
+  arg1 = static_cast< int64_t >(val1);
+  result = (void *)cast_integer_to_void_ptr(arg1);
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_void, 0 |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MapLong2Long_map_set(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  MapLong2Long *arg1 = (MapLong2Long *) 0 ;
+  std::unordered_map< int64_t,int64_t > arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  void *argp2 ;
+  int res2 = 0 ;
+  PyObject *swig_obj[2] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MapLong2Long_map_set", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_MapLong2Long, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MapLong2Long_map_set" "', argument " "1"" of type '" "MapLong2Long *""'"); 
+  }
+  arg1 = reinterpret_cast< MapLong2Long * >(argp1);
+  {
+    res2 = SWIG_ConvertPtr(swig_obj[1], &argp2, SWIGTYPE_p_std__unordered_mapT_long_long_t,  0  | 0);
+    if (!SWIG_IsOK(res2)) {
+      SWIG_exception_fail(SWIG_ArgError(res2), "in method '" "MapLong2Long_map_set" "', argument " "2"" of type '" "std::unordered_map< int64_t,int64_t >""'"); 
+    }  
+    if (!argp2) {
+      SWIG_exception_fail(SWIG_ValueError, "invalid null reference " "in method '" "MapLong2Long_map_set" "', argument " "2"" of type '" "std::unordered_map< int64_t,int64_t >""'");
+    } else {
+      std::unordered_map< int64_t,int64_t > * temp = reinterpret_cast< std::unordered_map< int64_t,int64_t > * >(argp2);
+      arg2 = *temp;
+      if (SWIG_IsNewObj(res2)) delete temp;
+    }
+  }
+  if (arg1) (arg1)->map = arg2;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MapLong2Long_map_get(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  MapLong2Long *arg1 = (MapLong2Long *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  std::unordered_map< int64_t,int64_t > result;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_MapLong2Long, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MapLong2Long_map_get" "', argument " "1"" of type '" "MapLong2Long *""'"); 
+  }
+  arg1 = reinterpret_cast< MapLong2Long * >(argp1);
+  result =  ((arg1)->map);
+  resultobj = SWIG_NewPointerObj((new std::unordered_map< int64_t,int64_t >(static_cast< const std::unordered_map< int64_t,int64_t >& >(result))), SWIGTYPE_p_std__unordered_mapT_long_long_t, SWIG_POINTER_OWN |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MapLong2Long_add(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  MapLong2Long *arg1 = (MapLong2Long *) 0 ;
+  size_t arg2 ;
+  int64_t *arg3 = (int64_t *) 0 ;
+  int64_t *arg4 = (int64_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MapLong2Long_add", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_MapLong2Long, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MapLong2Long_add" "', argument " "1"" of type '" "MapLong2Long *""'"); 
+  }
+  arg1 = reinterpret_cast< MapLong2Long * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MapLong2Long_add" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "MapLong2Long_add" "', argument " "3"" of type '" "int64_t const *""'"); 
+  }
+  arg3 = reinterpret_cast< int64_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "MapLong2Long_add" "', argument " "4"" of type '" "int64_t const *""'"); 
+  }
+  arg4 = reinterpret_cast< int64_t * >(argp4);
+  (arg1)->add(arg2,(int64_t const *)arg3,(int64_t const *)arg4);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MapLong2Long_search(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  MapLong2Long *arg1 = (MapLong2Long *) 0 ;
+  int64_t arg2 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  long val2 ;
+  int ecode2 = 0 ;
+  PyObject *swig_obj[2] ;
+  int64_t result;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MapLong2Long_search", 2, 2, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_MapLong2Long, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MapLong2Long_search" "', argument " "1"" of type '" "MapLong2Long *""'"); 
+  }
+  arg1 = reinterpret_cast< MapLong2Long * >(argp1);
+  ecode2 = SWIG_AsVal_long(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MapLong2Long_search" "', argument " "2"" of type '" "int64_t""'");
+  } 
+  arg2 = static_cast< int64_t >(val2);
+  result = (int64_t)(arg1)->search(arg2);
+  resultobj = SWIG_From_long(static_cast< long >(result));
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_MapLong2Long_search_multiple(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  MapLong2Long *arg1 = (MapLong2Long *) 0 ;
+  size_t arg2 ;
+  int64_t *arg3 = (int64_t *) 0 ;
+  int64_t *arg4 = (int64_t *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  size_t val2 ;
+  int ecode2 = 0 ;
+  void *argp3 = 0 ;
+  int res3 = 0 ;
+  void *argp4 = 0 ;
+  int res4 = 0 ;
+  PyObject *swig_obj[4] ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "MapLong2Long_search_multiple", 4, 4, swig_obj)) SWIG_fail;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_MapLong2Long, 0 |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "MapLong2Long_search_multiple" "', argument " "1"" of type '" "MapLong2Long *""'"); 
+  }
+  arg1 = reinterpret_cast< MapLong2Long * >(argp1);
+  ecode2 = SWIG_AsVal_size_t(swig_obj[1], &val2);
+  if (!SWIG_IsOK(ecode2)) {
+    SWIG_exception_fail(SWIG_ArgError(ecode2), "in method '" "MapLong2Long_search_multiple" "', argument " "2"" of type '" "size_t""'");
+  } 
+  arg2 = static_cast< size_t >(val2);
+  res3 = SWIG_ConvertPtr(swig_obj[2], &argp3,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res3)) {
+    SWIG_exception_fail(SWIG_ArgError(res3), "in method '" "MapLong2Long_search_multiple" "', argument " "3"" of type '" "int64_t *""'"); 
+  }
+  arg3 = reinterpret_cast< int64_t * >(argp3);
+  res4 = SWIG_ConvertPtr(swig_obj[3], &argp4,SWIGTYPE_p_long, 0 |  0 );
+  if (!SWIG_IsOK(res4)) {
+    SWIG_exception_fail(SWIG_ArgError(res4), "in method '" "MapLong2Long_search_multiple" "', argument " "4"" of type '" "int64_t *""'"); 
+  }
+  arg4 = reinterpret_cast< int64_t * >(argp4);
+  (arg1)->search_multiple(arg2,arg3,arg4);
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_new_MapLong2Long(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  MapLong2Long *result = 0 ;
+  
+  if (!SWIG_Python_UnpackTuple(args, "new_MapLong2Long", 0, 0, 0)) SWIG_fail;
+  result = (MapLong2Long *)new MapLong2Long();
+  resultobj = SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_MapLong2Long, SWIG_POINTER_NEW |  0 );
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *_wrap_delete_MapLong2Long(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  MapLong2Long *arg1 = (MapLong2Long *) 0 ;
+  void *argp1 = 0 ;
+  int res1 = 0 ;
+  PyObject *swig_obj[1] ;
+  
+  if (!args) SWIG_fail;
+  swig_obj[0] = args;
+  res1 = SWIG_ConvertPtr(swig_obj[0], &argp1,SWIGTYPE_p_MapLong2Long, SWIG_POINTER_DISOWN |  0 );
+  if (!SWIG_IsOK(res1)) {
+    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "delete_MapLong2Long" "', argument " "1"" of type '" "MapLong2Long *""'"); 
+  }
+  arg1 = reinterpret_cast< MapLong2Long * >(argp1);
+  delete arg1;
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+SWIGINTERN PyObject *MapLong2Long_swigregister(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *obj;
+  if (!SWIG_Python_UnpackTuple(args, "swigregister", 1, 1, &obj)) return NULL;
+  SWIG_TypeNewClientData(SWIGTYPE_p_MapLong2Long, SWIG_NewClientData(obj));
+  return SWIG_Py_Void();
+}
+
+SWIGINTERN PyObject *MapLong2Long_swiginit(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  return SWIG_Python_InitShadowInstance(args);
+}
+
+SWIGINTERN PyObject *_wrap_wait(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
+  PyObject *resultobj = 0;
+  
+  if (!SWIG_Python_UnpackTuple(args, "wait", 0, 0, 0)) SWIG_fail;
+  wait();
+  resultobj = SWIG_Py_Void();
+  return resultobj;
+fail:
+  return NULL;
+}
+
+
+static PyMethodDef SwigMethods[] = {
+	 { "SWIG_PyInstanceMethod_New", SWIG_PyInstanceMethod_New, METH_O, NULL},
+	 { "delete_SwigPyIterator", _wrap_delete_SwigPyIterator, METH_O, NULL},
+	 { "SwigPyIterator_value", _wrap_SwigPyIterator_value, METH_O, NULL},
+	 { "SwigPyIterator_incr", _wrap_SwigPyIterator_incr, METH_VARARGS, NULL},
+	 { "SwigPyIterator_decr", _wrap_SwigPyIterator_decr, METH_VARARGS, NULL},
+	 { "SwigPyIterator_distance", _wrap_SwigPyIterator_distance, METH_VARARGS, NULL},
+	 { "SwigPyIterator_equal", _wrap_SwigPyIterator_equal, METH_VARARGS, NULL},
+	 { "SwigPyIterator_copy", _wrap_SwigPyIterator_copy, METH_O, NULL},
+	 { "SwigPyIterator_next", _wrap_SwigPyIterator_next, METH_O, NULL},
+	 { "SwigPyIterator___next__", _wrap_SwigPyIterator___next__, METH_O, NULL},
+	 { "SwigPyIterator_previous", _wrap_SwigPyIterator_previous, METH_O, NULL},
+	 { "SwigPyIterator_advance", _wrap_SwigPyIterator_advance, METH_VARARGS, NULL},
+	 { "SwigPyIterator___eq__", _wrap_SwigPyIterator___eq__, METH_VARARGS, NULL},
+	 { "SwigPyIterator___ne__", _wrap_SwigPyIterator___ne__, METH_VARARGS, NULL},
+	 { "SwigPyIterator___iadd__", _wrap_SwigPyIterator___iadd__, METH_VARARGS, NULL},
+	 { "SwigPyIterator___isub__", _wrap_SwigPyIterator___isub__, METH_VARARGS, NULL},
+	 { "SwigPyIterator___add__", _wrap_SwigPyIterator___add__, METH_VARARGS, NULL},
+	 { "SwigPyIterator___sub__", _wrap_SwigPyIterator___sub__, METH_VARARGS, NULL},
+	 { "SwigPyIterator_swigregister", SwigPyIterator_swigregister, METH_O, NULL},
+	 { "new_Float32Vector", _wrap_new_Float32Vector, METH_NOARGS, NULL},
+	 { "Float32Vector_push_back", _wrap_Float32Vector_push_back, METH_VARARGS, NULL},
+	 { "Float32Vector_clear", _wrap_Float32Vector_clear, METH_O, NULL},
+	 { "Float32Vector_data", _wrap_Float32Vector_data, METH_O, NULL},
+	 { "Float32Vector_size", _wrap_Float32Vector_size, METH_O, NULL},
+	 { "Float32Vector_at", _wrap_Float32Vector_at, METH_VARARGS, NULL},
+	 { "Float32Vector_resize", _wrap_Float32Vector_resize, METH_VARARGS, NULL},
+	 { "Float32Vector_swap", _wrap_Float32Vector_swap, METH_VARARGS, NULL},
+	 { "delete_Float32Vector", _wrap_delete_Float32Vector, METH_O, NULL},
+	 { "Float32Vector_swigregister", Float32Vector_swigregister, METH_O, NULL},
+	 { "Float32Vector_swiginit", Float32Vector_swiginit, METH_VARARGS, NULL},
+	 { "new_Float64Vector", _wrap_new_Float64Vector, METH_NOARGS, NULL},
+	 { "Float64Vector_push_back", _wrap_Float64Vector_push_back, METH_VARARGS, NULL},
+	 { "Float64Vector_clear", _wrap_Float64Vector_clear, METH_O, NULL},
+	 { "Float64Vector_data", _wrap_Float64Vector_data, METH_O, NULL},
+	 { "Float64Vector_size", _wrap_Float64Vector_size, METH_O, NULL},
+	 { "Float64Vector_at", _wrap_Float64Vector_at, METH_VARARGS, NULL},
+	 { "Float64Vector_resize", _wrap_Float64Vector_resize, METH_VARARGS, NULL},
+	 { "Float64Vector_swap", _wrap_Float64Vector_swap, METH_VARARGS, NULL},
+	 { "delete_Float64Vector", _wrap_delete_Float64Vector, METH_O, NULL},
+	 { "Float64Vector_swigregister", Float64Vector_swigregister, METH_O, NULL},
+	 { "Float64Vector_swiginit", Float64Vector_swiginit, METH_VARARGS, NULL},
+	 { "new_Int8Vector", _wrap_new_Int8Vector, METH_NOARGS, NULL},
+	 { "Int8Vector_push_back", _wrap_Int8Vector_push_back, METH_VARARGS, NULL},
+	 { "Int8Vector_clear", _wrap_Int8Vector_clear, METH_O, NULL},
+	 { "Int8Vector_data", _wrap_Int8Vector_data, METH_O, NULL},
+	 { "Int8Vector_size", _wrap_Int8Vector_size, METH_O, NULL},
+	 { "Int8Vector_at", _wrap_Int8Vector_at, METH_VARARGS, NULL},
+	 { "Int8Vector_resize", _wrap_Int8Vector_resize, METH_VARARGS, NULL},
+	 { "Int8Vector_swap", _wrap_Int8Vector_swap, METH_VARARGS, NULL},
+	 { "delete_Int8Vector", _wrap_delete_Int8Vector, METH_O, NULL},
+	 { "Int8Vector_swigregister", Int8Vector_swigregister, METH_O, NULL},
+	 { "Int8Vector_swiginit", Int8Vector_swiginit, METH_VARARGS, NULL},
+	 { "new_Int16Vector", _wrap_new_Int16Vector, METH_NOARGS, NULL},
+	 { "Int16Vector_push_back", _wrap_Int16Vector_push_back, METH_VARARGS, NULL},
+	 { "Int16Vector_clear", _wrap_Int16Vector_clear, METH_O, NULL},
+	 { "Int16Vector_data", _wrap_Int16Vector_data, METH_O, NULL},
+	 { "Int16Vector_size", _wrap_Int16Vector_size, METH_O, NULL},
+	 { "Int16Vector_at", _wrap_Int16Vector_at, METH_VARARGS, NULL},
+	 { "Int16Vector_resize", _wrap_Int16Vector_resize, METH_VARARGS, NULL},
+	 { "Int16Vector_swap", _wrap_Int16Vector_swap, METH_VARARGS, NULL},
+	 { "delete_Int16Vector", _wrap_delete_Int16Vector, METH_O, NULL},
+	 { "Int16Vector_swigregister", Int16Vector_swigregister, METH_O, NULL},
+	 { "Int16Vector_swiginit", Int16Vector_swiginit, METH_VARARGS, NULL},
+	 { "new_Int32Vector", _wrap_new_Int32Vector, METH_NOARGS, NULL},
+	 { "Int32Vector_push_back", _wrap_Int32Vector_push_back, METH_VARARGS, NULL},
+	 { "Int32Vector_clear", _wrap_Int32Vector_clear, METH_O, NULL},
+	 { "Int32Vector_data", _wrap_Int32Vector_data, METH_O, NULL},
+	 { "Int32Vector_size", _wrap_Int32Vector_size, METH_O, NULL},
+	 { "Int32Vector_at", _wrap_Int32Vector_at, METH_VARARGS, NULL},
+	 { "Int32Vector_resize", _wrap_Int32Vector_resize, METH_VARARGS, NULL},
+	 { "Int32Vector_swap", _wrap_Int32Vector_swap, METH_VARARGS, NULL},
+	 { "delete_Int32Vector", _wrap_delete_Int32Vector, METH_O, NULL},
+	 { "Int32Vector_swigregister", Int32Vector_swigregister, METH_O, NULL},
+	 { "Int32Vector_swiginit", Int32Vector_swiginit, METH_VARARGS, NULL},
+	 { "new_Int64Vector", _wrap_new_Int64Vector, METH_NOARGS, NULL},
+	 { "Int64Vector_push_back", _wrap_Int64Vector_push_back, METH_VARARGS, NULL},
+	 { "Int64Vector_clear", _wrap_Int64Vector_clear, METH_O, NULL},
+	 { "Int64Vector_data", _wrap_Int64Vector_data, METH_O, NULL},
+	 { "Int64Vector_size", _wrap_Int64Vector_size, METH_O, NULL},
+	 { "Int64Vector_at", _wrap_Int64Vector_at, METH_VARARGS, NULL},
+	 { "Int64Vector_resize", _wrap_Int64Vector_resize, METH_VARARGS, NULL},
+	 { "Int64Vector_swap", _wrap_Int64Vector_swap, METH_VARARGS, NULL},
+	 { "delete_Int64Vector", _wrap_delete_Int64Vector, METH_O, NULL},
+	 { "Int64Vector_swigregister", Int64Vector_swigregister, METH_O, NULL},
+	 { "Int64Vector_swiginit", Int64Vector_swiginit, METH_VARARGS, NULL},
+	 { "new_UInt8Vector", _wrap_new_UInt8Vector, METH_NOARGS, NULL},
+	 { "UInt8Vector_push_back", _wrap_UInt8Vector_push_back, METH_VARARGS, NULL},
+	 { "UInt8Vector_clear", _wrap_UInt8Vector_clear, METH_O, NULL},
+	 { "UInt8Vector_data", _wrap_UInt8Vector_data, METH_O, NULL},
+	 { "UInt8Vector_size", _wrap_UInt8Vector_size, METH_O, NULL},
+	 { "UInt8Vector_at", _wrap_UInt8Vector_at, METH_VARARGS, NULL},
+	 { "UInt8Vector_resize", _wrap_UInt8Vector_resize, METH_VARARGS, NULL},
+	 { "UInt8Vector_swap", _wrap_UInt8Vector_swap, METH_VARARGS, NULL},
+	 { "delete_UInt8Vector", _wrap_delete_UInt8Vector, METH_O, NULL},
+	 { "UInt8Vector_swigregister", UInt8Vector_swigregister, METH_O, NULL},
+	 { "UInt8Vector_swiginit", UInt8Vector_swiginit, METH_VARARGS, NULL},
+	 { "new_UInt16Vector", _wrap_new_UInt16Vector, METH_NOARGS, NULL},
+	 { "UInt16Vector_push_back", _wrap_UInt16Vector_push_back, METH_VARARGS, NULL},
+	 { "UInt16Vector_clear", _wrap_UInt16Vector_clear, METH_O, NULL},
+	 { "UInt16Vector_data", _wrap_UInt16Vector_data, METH_O, NULL},
+	 { "UInt16Vector_size", _wrap_UInt16Vector_size, METH_O, NULL},
+	 { "UInt16Vector_at", _wrap_UInt16Vector_at, METH_VARARGS, NULL},
+	 { "UInt16Vector_resize", _wrap_UInt16Vector_resize, METH_VARARGS, NULL},
+	 { "UInt16Vector_swap", _wrap_UInt16Vector_swap, METH_VARARGS, NULL},
+	 { "delete_UInt16Vector", _wrap_delete_UInt16Vector, METH_O, NULL},
+	 { "UInt16Vector_swigregister", UInt16Vector_swigregister, METH_O, NULL},
+	 { "UInt16Vector_swiginit", UInt16Vector_swiginit, METH_VARARGS, NULL},
+	 { "new_UInt32Vector", _wrap_new_UInt32Vector, METH_NOARGS, NULL},
+	 { "UInt32Vector_push_back", _wrap_UInt32Vector_push_back, METH_VARARGS, NULL},
+	 { "UInt32Vector_clear", _wrap_UInt32Vector_clear, METH_O, NULL},
+	 { "UInt32Vector_data", _wrap_UInt32Vector_data, METH_O, NULL},
+	 { "UInt32Vector_size", _wrap_UInt32Vector_size, METH_O, NULL},
+	 { "UInt32Vector_at", _wrap_UInt32Vector_at, METH_VARARGS, NULL},
+	 { "UInt32Vector_resize", _wrap_UInt32Vector_resize, METH_VARARGS, NULL},
+	 { "UInt32Vector_swap", _wrap_UInt32Vector_swap, METH_VARARGS, NULL},
+	 { "delete_UInt32Vector", _wrap_delete_UInt32Vector, METH_O, NULL},
+	 { "UInt32Vector_swigregister", UInt32Vector_swigregister, METH_O, NULL},
+	 { "UInt32Vector_swiginit", UInt32Vector_swiginit, METH_VARARGS, NULL},
+	 { "new_UInt64Vector", _wrap_new_UInt64Vector, METH_NOARGS, NULL},
+	 { "UInt64Vector_push_back", _wrap_UInt64Vector_push_back, METH_VARARGS, NULL},
+	 { "UInt64Vector_clear", _wrap_UInt64Vector_clear, METH_O, NULL},
+	 { "UInt64Vector_data", _wrap_UInt64Vector_data, METH_O, NULL},
+	 { "UInt64Vector_size", _wrap_UInt64Vector_size, METH_O, NULL},
+	 { "UInt64Vector_at", _wrap_UInt64Vector_at, METH_VARARGS, NULL},
+	 { "UInt64Vector_resize", _wrap_UInt64Vector_resize, METH_VARARGS, NULL},
+	 { "UInt64Vector_swap", _wrap_UInt64Vector_swap, METH_VARARGS, NULL},
+	 { "delete_UInt64Vector", _wrap_delete_UInt64Vector, METH_O, NULL},
+	 { "UInt64Vector_swigregister", UInt64Vector_swigregister, METH_O, NULL},
+	 { "UInt64Vector_swiginit", UInt64Vector_swiginit, METH_VARARGS, NULL},
+	 { "new_Float32VectorVector", _wrap_new_Float32VectorVector, METH_NOARGS, NULL},
+	 { "Float32VectorVector_push_back", _wrap_Float32VectorVector_push_back, METH_VARARGS, NULL},
+	 { "Float32VectorVector_clear", _wrap_Float32VectorVector_clear, METH_O, NULL},
+	 { "Float32VectorVector_data", _wrap_Float32VectorVector_data, METH_O, NULL},
+	 { "Float32VectorVector_size", _wrap_Float32VectorVector_size, METH_O, NULL},
+	 { "Float32VectorVector_at", _wrap_Float32VectorVector_at, METH_VARARGS, NULL},
+	 { "Float32VectorVector_resize", _wrap_Float32VectorVector_resize, METH_VARARGS, NULL},
+	 { "Float32VectorVector_swap", _wrap_Float32VectorVector_swap, METH_VARARGS, NULL},
+	 { "delete_Float32VectorVector", _wrap_delete_Float32VectorVector, METH_O, NULL},
+	 { "Float32VectorVector_swigregister", Float32VectorVector_swigregister, METH_O, NULL},
+	 { "Float32VectorVector_swiginit", Float32VectorVector_swiginit, METH_VARARGS, NULL},
+	 { "new_UInt8VectorVector", _wrap_new_UInt8VectorVector, METH_NOARGS, NULL},
+	 { "UInt8VectorVector_push_back", _wrap_UInt8VectorVector_push_back, METH_VARARGS, NULL},
+	 { "UInt8VectorVector_clear", _wrap_UInt8VectorVector_clear, METH_O, NULL},
+	 { "UInt8VectorVector_data", _wrap_UInt8VectorVector_data, METH_O, NULL},
+	 { "UInt8VectorVector_size", _wrap_UInt8VectorVector_size, METH_O, NULL},
+	 { "UInt8VectorVector_at", _wrap_UInt8VectorVector_at, METH_VARARGS, NULL},
+	 { "UInt8VectorVector_resize", _wrap_UInt8VectorVector_resize, METH_VARARGS, NULL},
+	 { "UInt8VectorVector_swap", _wrap_UInt8VectorVector_swap, METH_VARARGS, NULL},
+	 { "delete_UInt8VectorVector", _wrap_delete_UInt8VectorVector, METH_O, NULL},
+	 { "UInt8VectorVector_swigregister", UInt8VectorVector_swigregister, METH_O, NULL},
+	 { "UInt8VectorVector_swiginit", UInt8VectorVector_swiginit, METH_VARARGS, NULL},
+	 { "new_Int32VectorVector", _wrap_new_Int32VectorVector, METH_NOARGS, NULL},
+	 { "Int32VectorVector_push_back", _wrap_Int32VectorVector_push_back, METH_VARARGS, NULL},
+	 { "Int32VectorVector_clear", _wrap_Int32VectorVector_clear, METH_O, NULL},
+	 { "Int32VectorVector_data", _wrap_Int32VectorVector_data, METH_O, NULL},
+	 { "Int32VectorVector_size", _wrap_Int32VectorVector_size, METH_O, NULL},
+	 { "Int32VectorVector_at", _wrap_Int32VectorVector_at, METH_VARARGS, NULL},
+	 { "Int32VectorVector_resize", _wrap_Int32VectorVector_resize, METH_VARARGS, NULL},
+	 { "Int32VectorVector_swap", _wrap_Int32VectorVector_swap, METH_VARARGS, NULL},
+	 { "delete_Int32VectorVector", _wrap_delete_Int32VectorVector, METH_O, NULL},
+	 { "Int32VectorVector_swigregister", Int32VectorVector_swigregister, METH_O, NULL},
+	 { "Int32VectorVector_swiginit", Int32VectorVector_swiginit, METH_VARARGS, NULL},
+	 { "new_Int64VectorVector", _wrap_new_Int64VectorVector, METH_NOARGS, NULL},
+	 { "Int64VectorVector_push_back", _wrap_Int64VectorVector_push_back, METH_VARARGS, NULL},
+	 { "Int64VectorVector_clear", _wrap_Int64VectorVector_clear, METH_O, NULL},
+	 { "Int64VectorVector_data", _wrap_Int64VectorVector_data, METH_O, NULL},
+	 { "Int64VectorVector_size", _wrap_Int64VectorVector_size, METH_O, NULL},
+	 { "Int64VectorVector_at", _wrap_Int64VectorVector_at, METH_VARARGS, NULL},
+	 { "Int64VectorVector_resize", _wrap_Int64VectorVector_resize, METH_VARARGS, NULL},
+	 { "Int64VectorVector_swap", _wrap_Int64VectorVector_swap, METH_VARARGS, NULL},
+	 { "delete_Int64VectorVector", _wrap_delete_Int64VectorVector, METH_O, NULL},
+	 { "Int64VectorVector_swigregister", Int64VectorVector_swigregister, METH_O, NULL},
+	 { "Int64VectorVector_swiginit", Int64VectorVector_swiginit, METH_VARARGS, NULL},
+	 { "new_VectorTransformVector", _wrap_new_VectorTransformVector, METH_NOARGS, NULL},
+	 { "VectorTransformVector_push_back", _wrap_VectorTransformVector_push_back, METH_VARARGS, NULL},
+	 { "VectorTransformVector_clear", _wrap_VectorTransformVector_clear, METH_O, NULL},
+	 { "VectorTransformVector_data", _wrap_VectorTransformVector_data, METH_O, NULL},
+	 { "VectorTransformVector_size", _wrap_VectorTransformVector_size, METH_O, NULL},
+	 { "VectorTransformVector_at", _wrap_VectorTransformVector_at, METH_VARARGS, NULL},
+	 { "VectorTransformVector_resize", _wrap_VectorTransformVector_resize, METH_VARARGS, NULL},
+	 { "VectorTransformVector_swap", _wrap_VectorTransformVector_swap, METH_VARARGS, NULL},
+	 { "delete_VectorTransformVector", _wrap_delete_VectorTransformVector, METH_O, NULL},
+	 { "VectorTransformVector_swigregister", VectorTransformVector_swigregister, METH_O, NULL},
+	 { "VectorTransformVector_swiginit", VectorTransformVector_swiginit, METH_VARARGS, NULL},
+	 { "new_OperatingPointVector", _wrap_new_OperatingPointVector, METH_NOARGS, NULL},
+	 { "OperatingPointVector_push_back", _wrap_OperatingPointVector_push_back, METH_VARARGS, NULL},
+	 { "OperatingPointVector_clear", _wrap_OperatingPointVector_clear, METH_O, NULL},
+	 { "OperatingPointVector_data", _wrap_OperatingPointVector_data, METH_O, NULL},
+	 { "OperatingPointVector_size", _wrap_OperatingPointVector_size, METH_O, NULL},
+	 { "OperatingPointVector_at", _wrap_OperatingPointVector_at, METH_VARARGS, NULL},
+	 { "OperatingPointVector_resize", _wrap_OperatingPointVector_resize, METH_VARARGS, NULL},
+	 { "OperatingPointVector_swap", _wrap_OperatingPointVector_swap, METH_VARARGS, NULL},
+	 { "delete_OperatingPointVector", _wrap_delete_OperatingPointVector, METH_O, NULL},
+	 { "OperatingPointVector_swigregister", OperatingPointVector_swigregister, METH_O, NULL},
+	 { "OperatingPointVector_swiginit", OperatingPointVector_swiginit, METH_VARARGS, NULL},
+	 { "new_InvertedListsPtrVector", _wrap_new_InvertedListsPtrVector, METH_NOARGS, NULL},
+	 { "InvertedListsPtrVector_push_back", _wrap_InvertedListsPtrVector_push_back, METH_VARARGS, NULL},
+	 { "InvertedListsPtrVector_clear", _wrap_InvertedListsPtrVector_clear, METH_O, NULL},
+	 { "InvertedListsPtrVector_data", _wrap_InvertedListsPtrVector_data, METH_O, NULL},
+	 { "InvertedListsPtrVector_size", _wrap_InvertedListsPtrVector_size, METH_O, NULL},
+	 { "InvertedListsPtrVector_at", _wrap_InvertedListsPtrVector_at, METH_VARARGS, NULL},
+	 { "InvertedListsPtrVector_resize", _wrap_InvertedListsPtrVector_resize, METH_VARARGS, NULL},
+	 { "InvertedListsPtrVector_swap", _wrap_InvertedListsPtrVector_swap, METH_VARARGS, NULL},
+	 { "delete_InvertedListsPtrVector", _wrap_delete_InvertedListsPtrVector, METH_O, NULL},
+	 { "InvertedListsPtrVector_swigregister", InvertedListsPtrVector_swigregister, METH_O, NULL},
+	 { "InvertedListsPtrVector_swiginit", InvertedListsPtrVector_swiginit, METH_VARARGS, NULL},
+	 { "new_RepeatVector", _wrap_new_RepeatVector, METH_NOARGS, NULL},
+	 { "RepeatVector_push_back", _wrap_RepeatVector_push_back, METH_VARARGS, NULL},
+	 { "RepeatVector_clear", _wrap_RepeatVector_clear, METH_O, NULL},
+	 { "RepeatVector_data", _wrap_RepeatVector_data, METH_O, NULL},
+	 { "RepeatVector_size", _wrap_RepeatVector_size, METH_O, NULL},
+	 { "RepeatVector_at", _wrap_RepeatVector_at, METH_VARARGS, NULL},
+	 { "RepeatVector_resize", _wrap_RepeatVector_resize, METH_VARARGS, NULL},
+	 { "RepeatVector_swap", _wrap_RepeatVector_swap, METH_VARARGS, NULL},
+	 { "delete_RepeatVector", _wrap_delete_RepeatVector, METH_O, NULL},
+	 { "RepeatVector_swigregister", RepeatVector_swigregister, METH_O, NULL},
+	 { "RepeatVector_swiginit", RepeatVector_swiginit, METH_VARARGS, NULL},
+	 { "new_ClusteringIterationStatsVector", _wrap_new_ClusteringIterationStatsVector, METH_NOARGS, NULL},
+	 { "ClusteringIterationStatsVector_push_back", _wrap_ClusteringIterationStatsVector_push_back, METH_VARARGS, NULL},
+	 { "ClusteringIterationStatsVector_clear", _wrap_ClusteringIterationStatsVector_clear, METH_O, NULL},
+	 { "ClusteringIterationStatsVector_data", _wrap_ClusteringIterationStatsVector_data, METH_O, NULL},
+	 { "ClusteringIterationStatsVector_size", _wrap_ClusteringIterationStatsVector_size, METH_O, NULL},
+	 { "ClusteringIterationStatsVector_at", _wrap_ClusteringIterationStatsVector_at, METH_VARARGS, NULL},
+	 { "ClusteringIterationStatsVector_resize", _wrap_ClusteringIterationStatsVector_resize, METH_VARARGS, NULL},
+	 { "ClusteringIterationStatsVector_swap", _wrap_ClusteringIterationStatsVector_swap, METH_VARARGS, NULL},
+	 { "delete_ClusteringIterationStatsVector", _wrap_delete_ClusteringIterationStatsVector, METH_O, NULL},
+	 { "ClusteringIterationStatsVector_swigregister", ClusteringIterationStatsVector_swigregister, METH_O, NULL},
+	 { "ClusteringIterationStatsVector_swiginit", ClusteringIterationStatsVector_swiginit, METH_VARARGS, NULL},
+	 { "new_OnDiskOneListVector", _wrap_new_OnDiskOneListVector, METH_NOARGS, NULL},
+	 { "OnDiskOneListVector_push_back", _wrap_OnDiskOneListVector_push_back, METH_VARARGS, NULL},
+	 { "OnDiskOneListVector_clear", _wrap_OnDiskOneListVector_clear, METH_O, NULL},
+	 { "OnDiskOneListVector_data", _wrap_OnDiskOneListVector_data, METH_O, NULL},
+	 { "OnDiskOneListVector_size", _wrap_OnDiskOneListVector_size, METH_O, NULL},
+	 { "OnDiskOneListVector_at", _wrap_OnDiskOneListVector_at, METH_VARARGS, NULL},
+	 { "OnDiskOneListVector_resize", _wrap_OnDiskOneListVector_resize, METH_VARARGS, NULL},
+	 { "OnDiskOneListVector_swap", _wrap_OnDiskOneListVector_swap, METH_VARARGS, NULL},
+	 { "delete_OnDiskOneListVector", _wrap_delete_OnDiskOneListVector, METH_O, NULL},
+	 { "OnDiskOneListVector_swigregister", OnDiskOneListVector_swigregister, METH_O, NULL},
+	 { "OnDiskOneListVector_swiginit", OnDiskOneListVector_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuResourcesVector", _wrap_new_GpuResourcesVector, METH_NOARGS, NULL},
+	 { "GpuResourcesVector_push_back", _wrap_GpuResourcesVector_push_back, METH_VARARGS, NULL},
+	 { "GpuResourcesVector_clear", _wrap_GpuResourcesVector_clear, METH_O, NULL},
+	 { "GpuResourcesVector_data", _wrap_GpuResourcesVector_data, METH_O, NULL},
+	 { "GpuResourcesVector_size", _wrap_GpuResourcesVector_size, METH_O, NULL},
+	 { "GpuResourcesVector_at", _wrap_GpuResourcesVector_at, METH_VARARGS, NULL},
+	 { "GpuResourcesVector_resize", _wrap_GpuResourcesVector_resize, METH_VARARGS, NULL},
+	 { "GpuResourcesVector_swap", _wrap_GpuResourcesVector_swap, METH_VARARGS, NULL},
+	 { "delete_GpuResourcesVector", _wrap_delete_GpuResourcesVector, METH_O, NULL},
+	 { "GpuResourcesVector_swigregister", GpuResourcesVector_swigregister, METH_O, NULL},
+	 { "GpuResourcesVector_swiginit", GpuResourcesVector_swiginit, METH_VARARGS, NULL},
+	 { "simd_histogram_8", _wrap_simd_histogram_8, METH_VARARGS, "\n"
+		" low level SIMD histogramming functions  8-bin histogram of (x - min) >> shift\n"
+		"values outside the range are ignored.\n"
+		"the data table should be aligned on 32 bytes\n"
+		""},
+	 { "simd_histogram_16", _wrap_simd_histogram_16, METH_VARARGS, " same for 16-bin histogram"},
+	 { "PartitionStats_bissect_cycles_set", _wrap_PartitionStats_bissect_cycles_set, METH_VARARGS, NULL},
+	 { "PartitionStats_bissect_cycles_get", _wrap_PartitionStats_bissect_cycles_get, METH_O, NULL},
+	 { "PartitionStats_compress_cycles_set", _wrap_PartitionStats_compress_cycles_set, METH_VARARGS, NULL},
+	 { "PartitionStats_compress_cycles_get", _wrap_PartitionStats_compress_cycles_get, METH_O, NULL},
+	 { "new_PartitionStats", _wrap_new_PartitionStats, METH_NOARGS, NULL},
+	 { "PartitionStats_reset", _wrap_PartitionStats_reset, METH_O, NULL},
+	 { "delete_PartitionStats", _wrap_delete_PartitionStats, METH_O, NULL},
+	 { "PartitionStats_swigregister", PartitionStats_swigregister, METH_O, NULL},
+	 { "PartitionStats_swiginit", PartitionStats_swiginit, METH_VARARGS, NULL},
+	 { "bitvec_print", _wrap_bitvec_print, METH_VARARGS, NULL},
+	 { "fvecs2bitvecs", _wrap_fvecs2bitvecs, METH_VARARGS, NULL},
+	 { "bitvecs2fvecs", _wrap_bitvecs2fvecs, METH_VARARGS, NULL},
+	 { "fvec2bitvec", _wrap_fvec2bitvec, METH_VARARGS, NULL},
+	 { "bitvec_shuffle", _wrap_bitvec_shuffle, METH_VARARGS, " Shuffle the bits from b(i, j) := a(i, order[j])"},
+	 { "BitstringWriter_code_set", _wrap_BitstringWriter_code_set, METH_VARARGS, NULL},
+	 { "BitstringWriter_code_get", _wrap_BitstringWriter_code_get, METH_O, NULL},
+	 { "BitstringWriter_code_size_set", _wrap_BitstringWriter_code_size_set, METH_VARARGS, NULL},
+	 { "BitstringWriter_code_size_get", _wrap_BitstringWriter_code_size_get, METH_O, NULL},
+	 { "BitstringWriter_i_set", _wrap_BitstringWriter_i_set, METH_VARARGS, NULL},
+	 { "BitstringWriter_i_get", _wrap_BitstringWriter_i_get, METH_O, NULL},
+	 { "new_BitstringWriter", _wrap_new_BitstringWriter, METH_VARARGS, NULL},
+	 { "BitstringWriter_write", _wrap_BitstringWriter_write, METH_VARARGS, NULL},
+	 { "delete_BitstringWriter", _wrap_delete_BitstringWriter, METH_O, NULL},
+	 { "BitstringWriter_swigregister", BitstringWriter_swigregister, METH_O, NULL},
+	 { "BitstringWriter_swiginit", BitstringWriter_swiginit, METH_VARARGS, NULL},
+	 { "BitstringReader_code_set", _wrap_BitstringReader_code_set, METH_VARARGS, NULL},
+	 { "BitstringReader_code_get", _wrap_BitstringReader_code_get, METH_O, NULL},
+	 { "BitstringReader_code_size_set", _wrap_BitstringReader_code_size_set, METH_VARARGS, NULL},
+	 { "BitstringReader_code_size_get", _wrap_BitstringReader_code_size_get, METH_O, NULL},
+	 { "BitstringReader_i_set", _wrap_BitstringReader_i_set, METH_VARARGS, NULL},
+	 { "BitstringReader_i_get", _wrap_BitstringReader_i_get, METH_O, NULL},
+	 { "new_BitstringReader", _wrap_new_BitstringReader, METH_VARARGS, NULL},
+	 { "BitstringReader_read", _wrap_BitstringReader_read, METH_VARARGS, NULL},
+	 { "delete_BitstringReader", _wrap_delete_BitstringReader, METH_O, NULL},
+	 { "BitstringReader_swigregister", BitstringReader_swigregister, METH_O, NULL},
+	 { "BitstringReader_swiginit", BitstringReader_swiginit, METH_VARARGS, NULL},
+	 { "popcount64", _wrap_popcount64, METH_O, NULL},
+	 { "hammings", _wrap_hammings, METH_VARARGS, "\n"
+		" Compute a set of Hamming distances between na and nb binary vectors\n"
+		"\n"
+		":type a: uint8_t\n"
+		":param a:             size na * nbytespercode\n"
+		":type b: uint8_t\n"
+		":param b:             size nb * nbytespercode\n"
+		":type nbytespercode: int\n"
+		":param nbytespercode: should be multiple of 8\n"
+		":type dis: int\n"
+		":param dis:           output distances, size na * nb\n"
+		""},
+	 { "hammings_knn_hc", _wrap_hammings_knn_hc, METH_VARARGS, "\n"
+		" Return the k smallest Hamming distances for a set of binary query vectors,\n"
+		"using a max heap.\n"
+		":type a: uint8_t\n"
+		":param a:       queries, size ha->nh * ncodes\n"
+		":type b: uint8_t\n"
+		":param b:       database, size nb * ncodes\n"
+		":type nb: int\n"
+		":param nb:      number of database vectors\n"
+		":type ncodes: int\n"
+		":param ncodes:  size of the binary codes (bytes)\n"
+		":type ordered: int\n"
+		":param ordered: if != 0: order the results by decreasing distance\n"
+		"                   (may be bottleneck for k/n > 0.01)\n"
+		""},
+	 { "hammings_knn", _wrap_hammings_knn, METH_VARARGS, NULL},
+	 { "hammings_knn_mc", _wrap_hammings_knn_mc, METH_VARARGS, "\n"
+		" Return the k smallest Hamming distances for a set of binary query vectors,\n"
+		"using counting max.\n"
+		":type a: uint8_t\n"
+		":param a:       queries, size na * ncodes\n"
+		":type b: uint8_t\n"
+		":param b:       database, size nb * ncodes\n"
+		":type na: int\n"
+		":param na:      number of query vectors\n"
+		":type nb: int\n"
+		":param nb:      number of database vectors\n"
+		":type k: int\n"
+		":param k:       number of vectors/distances to return\n"
+		":type ncodes: int\n"
+		":param ncodes:  size of the binary codes (bytes)\n"
+		":type distances: int\n"
+		":param distances: output distances from each query vector to its k nearest\n"
+		"                   neighbors\n"
+		":type labels: int\n"
+		":param labels:  output ids of the k nearest neighbors to each query vector\n"
+		""},
+	 { "hamming_range_search", _wrap_hamming_range_search, METH_VARARGS, " same as hammings_knn except we are doing a range search with radius"},
+	 { "hamming_count_thres", _wrap_hamming_count_thres, METH_VARARGS, NULL},
+	 { "match_hamming_thres", _wrap_match_hamming_thres, METH_VARARGS, NULL},
+	 { "crosshamming_count_thres", _wrap_crosshamming_count_thres, METH_VARARGS, NULL},
+	 { "get_num_gpus", _wrap_get_num_gpus, METH_NOARGS, NULL},
+	 { "gpu_profiler_start", _wrap_gpu_profiler_start, METH_NOARGS, NULL},
+	 { "gpu_profiler_stop", _wrap_gpu_profiler_stop, METH_NOARGS, NULL},
+	 { "gpu_sync_all_devices", _wrap_gpu_sync_all_devices, METH_NOARGS, NULL},
+	 { "allocTypeToString", _wrap_allocTypeToString, METH_O, " Convert an AllocType to string"},
+	 { "memorySpaceToString", _wrap_memorySpaceToString, METH_O, " Convert a MemorySpace to string"},
+	 { "new_AllocInfo", _wrap_new_AllocInfo, METH_VARARGS, NULL},
+	 { "AllocInfo_toString", _wrap_AllocInfo_toString, METH_O, " Returns a string representation of this info"},
+	 { "AllocInfo_type_set", _wrap_AllocInfo_type_set, METH_VARARGS, " The internal category of the allocation"},
+	 { "AllocInfo_type_get", _wrap_AllocInfo_type_get, METH_O, " The internal category of the allocation"},
+	 { "AllocInfo_device_set", _wrap_AllocInfo_device_set, METH_VARARGS, " The device on which the allocation is happening"},
+	 { "AllocInfo_device_get", _wrap_AllocInfo_device_get, METH_O, " The device on which the allocation is happening"},
+	 { "AllocInfo_space_set", _wrap_AllocInfo_space_set, METH_VARARGS, " The memory space of the allocation"},
+	 { "AllocInfo_space_get", _wrap_AllocInfo_space_get, METH_O, " The memory space of the allocation"},
+	 { "AllocInfo_stream_set", _wrap_AllocInfo_stream_set, METH_VARARGS, "\n"
+		"The stream on which new work on the memory will be ordered (e.g., if a\n"
+		"piece of memory cached and to be returned for this call was last used on\n"
+		"stream 3 and a new memory request is for stream 4, the memory manager\n"
+		"will synchronize stream 4 to wait for the completion of stream 3 via\n"
+		"events or other stream synchronization.\n"
+		"\n"
+		"The memory manager guarantees that the returned memory is free to use\n"
+		"without data races on this stream specified.\n"
+		""},
+	 { "AllocInfo_stream_get", _wrap_AllocInfo_stream_get, METH_O, "\n"
+		"The stream on which new work on the memory will be ordered (e.g., if a\n"
+		"piece of memory cached and to be returned for this call was last used on\n"
+		"stream 3 and a new memory request is for stream 4, the memory manager\n"
+		"will synchronize stream 4 to wait for the completion of stream 3 via\n"
+		"events or other stream synchronization.\n"
+		"\n"
+		"The memory manager guarantees that the returned memory is free to use\n"
+		"without data races on this stream specified.\n"
+		""},
+	 { "delete_AllocInfo", _wrap_delete_AllocInfo, METH_O, NULL},
+	 { "AllocInfo_swigregister", AllocInfo_swigregister, METH_O, NULL},
+	 { "AllocInfo_swiginit", AllocInfo_swiginit, METH_VARARGS, NULL},
+	 { "makeDevAlloc", _wrap_makeDevAlloc, METH_VARARGS, " Create an AllocInfo for the current device with MemorySpace::Device"},
+	 { "makeTempAlloc", _wrap_makeTempAlloc, METH_VARARGS, " Create an AllocInfo for the current device with MemorySpace::Temporary"},
+	 { "makeSpaceAlloc", _wrap_makeSpaceAlloc, METH_VARARGS, " Create an AllocInfo for the current device"},
+	 { "new_AllocRequest", _wrap_new_AllocRequest, METH_VARARGS, NULL},
+	 { "AllocRequest_toString", _wrap_AllocRequest_toString, METH_O, " Returns a string representation of this request"},
+	 { "AllocRequest_size_set", _wrap_AllocRequest_size_set, METH_VARARGS, " The size in bytes of the allocation"},
+	 { "AllocRequest_size_get", _wrap_AllocRequest_size_get, METH_O, " The size in bytes of the allocation"},
+	 { "delete_AllocRequest", _wrap_delete_AllocRequest, METH_O, NULL},
+	 { "AllocRequest_swigregister", AllocRequest_swigregister, METH_O, NULL},
+	 { "AllocRequest_swiginit", AllocRequest_swiginit, METH_VARARGS, NULL},
+	 { "delete_GpuResources", _wrap_delete_GpuResources, METH_O, NULL},
+	 { "GpuResources_initializeForDevice", _wrap_GpuResources_initializeForDevice, METH_VARARGS, "\n"
+		"Call to pre-allocate resources for a particular device. If this is\n"
+		"not called, then resources will be allocated at the first time\n"
+		"of demand\n"
+		""},
+	 { "GpuResources_getBlasHandle", _wrap_GpuResources_getBlasHandle, METH_VARARGS, " Returns the cuBLAS handle that we use for the given device"},
+	 { "GpuResources_getDefaultStream", _wrap_GpuResources_getDefaultStream, METH_VARARGS, "\n"
+		"Returns the stream that we order all computation on for the\n"
+		"given device\n"
+		""},
+	 { "GpuResources_setDefaultStream", _wrap_GpuResources_setDefaultStream, METH_VARARGS, "\n"
+		"Overrides the default stream for a device to the user-supplied stream.\n"
+		"The resources object does not own this stream (i.e., it will not destroy\n"
+		"it).\n"
+		""},
+	 { "GpuResources_getAlternateStreams", _wrap_GpuResources_getAlternateStreams, METH_VARARGS, " Returns the set of alternative streams that we use for the given device"},
+	 { "GpuResources_allocMemory", _wrap_GpuResources_allocMemory, METH_VARARGS, "\n"
+		"Memory management\n"
+		"Returns an allocation from the given memory space, ordered with respect\n"
+		"to the given stream (i.e., the first user will be a kernel in this\n"
+		"stream). All allocations are sized internally to be the next highest\n"
+		"multiple of 16 bytes, and all allocations returned are guaranteed to be\n"
+		"16 byte aligned.\n"
+		""},
+	 { "GpuResources_deallocMemory", _wrap_GpuResources_deallocMemory, METH_VARARGS, " Returns a previous allocation"},
+	 { "GpuResources_getTempMemoryAvailable", _wrap_GpuResources_getTempMemoryAvailable, METH_VARARGS, "\n"
+		"For MemorySpace::Temporary, how much space is immediately available\n"
+		"without hipMalloc allocation?\n"
+		""},
+	 { "GpuResources_getPinnedMemory", _wrap_GpuResources_getPinnedMemory, METH_O, " Returns the available CPU pinned memory buffer"},
+	 { "GpuResources_getAsyncCopyStream", _wrap_GpuResources_getAsyncCopyStream, METH_VARARGS, " Returns the stream on which we perform async CPU <-> GPU copies"},
+	 { "GpuResources_getBlasHandleCurrentDevice", _wrap_GpuResources_getBlasHandleCurrentDevice, METH_O, "\n"
+		"Functions provided by default\n"
+		"\n"
+		"Calls getBlasHandle with the current device\n"
+		""},
+	 { "GpuResources_getDefaultStreamCurrentDevice", _wrap_GpuResources_getDefaultStreamCurrentDevice, METH_O, " Calls getDefaultStream with the current device"},
+	 { "GpuResources_getTempMemoryAvailableCurrentDevice", _wrap_GpuResources_getTempMemoryAvailableCurrentDevice, METH_O, " Calls getTempMemoryAvailable with the current device"},
+	 { "GpuResources_syncDefaultStream", _wrap_GpuResources_syncDefaultStream, METH_VARARGS, "\n"
+		"Synchronizes the CPU with respect to the default stream for the\n"
+		"given device\n"
+		""},
+	 { "GpuResources_syncDefaultStreamCurrentDevice", _wrap_GpuResources_syncDefaultStreamCurrentDevice, METH_O, " Calls syncDefaultStream for the current device"},
+	 { "GpuResources_getAlternateStreamsCurrentDevice", _wrap_GpuResources_getAlternateStreamsCurrentDevice, METH_O, " Calls getAlternateStreams for the current device"},
+	 { "GpuResources_getAsyncCopyStreamCurrentDevice", _wrap_GpuResources_getAsyncCopyStreamCurrentDevice, METH_O, " Calls getAsyncCopyStream for the current device"},
+	 { "GpuResources_swigregister", GpuResources_swigregister, METH_O, NULL},
+	 { "delete_GpuResourcesProvider", _wrap_delete_GpuResourcesProvider, METH_O, NULL},
+	 { "GpuResourcesProvider_getResources", _wrap_GpuResourcesProvider_getResources, METH_O, " Returns the shared resources object"},
+	 { "GpuResourcesProvider_swigregister", GpuResourcesProvider_swigregister, METH_O, NULL},
+	 { "new_StandardGpuResourcesImpl", _wrap_new_StandardGpuResourcesImpl, METH_NOARGS, NULL},
+	 { "delete_StandardGpuResourcesImpl", _wrap_delete_StandardGpuResourcesImpl, METH_O, NULL},
+	 { "StandardGpuResourcesImpl_noTempMemory", _wrap_StandardGpuResourcesImpl_noTempMemory, METH_O, "\n"
+		"Disable allocation of temporary memory; all temporary memory\n"
+		"requests will call hipMalloc / hipFree at the point of use\n"
+		""},
+	 { "StandardGpuResourcesImpl_setTempMemory", _wrap_StandardGpuResourcesImpl_setTempMemory, METH_VARARGS, "\n"
+		"Specify that we wish to use a certain fixed size of memory on\n"
+		"all devices as temporary memory. This is the upper bound for the GPU\n"
+		"memory that we will reserve. We will never go above 1.5 GiB on any GPU;\n"
+		"smaller GPUs (with <= 4 GiB or <= 8 GiB) will use less memory than that.\n"
+		"To avoid any temporary memory allocation, pass 0.\n"
+		""},
+	 { "StandardGpuResourcesImpl_setPinnedMemory", _wrap_StandardGpuResourcesImpl_setPinnedMemory, METH_VARARGS, "\n"
+		"Set amount of pinned memory to allocate, for async GPU <-> CPU\n"
+		"transfers\n"
+		""},
+	 { "StandardGpuResourcesImpl_setDefaultStream", _wrap_StandardGpuResourcesImpl_setDefaultStream, METH_VARARGS, "\n"
+		"Called to change the stream for work ordering. We do not own `stream`;\n"
+		"i.e., it will not be destroyed when the GpuResources object gets cleaned\n"
+		"up.\n"
+		"We are guaranteed that all Faiss GPU work is ordered with respect to\n"
+		"this stream upon exit from an index or other Faiss GPU call.\n"
+		""},
+	 { "StandardGpuResourcesImpl_revertDefaultStream", _wrap_StandardGpuResourcesImpl_revertDefaultStream, METH_VARARGS, "\n"
+		"Revert the default stream to the original stream managed by this\n"
+		"resources object, in case someone called `setDefaultStream`.\n"
+		""},
+	 { "StandardGpuResourcesImpl_getDefaultStream", _wrap_StandardGpuResourcesImpl_getDefaultStream, METH_VARARGS, "\n"
+		"Returns the stream for the given device on which all Faiss GPU work is\n"
+		"ordered.\n"
+		"We are guaranteed that all Faiss GPU work is ordered with respect to\n"
+		"this stream upon exit from an index or other Faiss GPU call.\n"
+		""},
+	 { "StandardGpuResourcesImpl_setDefaultNullStreamAllDevices", _wrap_StandardGpuResourcesImpl_setDefaultNullStreamAllDevices, METH_O, "\n"
+		"Called to change the work ordering streams to the null stream\n"
+		"for all devices\n"
+		""},
+	 { "StandardGpuResourcesImpl_setLogMemoryAllocations", _wrap_StandardGpuResourcesImpl_setLogMemoryAllocations, METH_VARARGS, "\n"
+		"If enabled, will print every GPU memory allocation and deallocation to\n"
+		"standard output\n"
+		""},
+	 { "StandardGpuResourcesImpl_initializeForDevice", _wrap_StandardGpuResourcesImpl_initializeForDevice, METH_VARARGS, "\n"
+		"Internal system calls\n"
+		"Initialize resources for this device\n"
+		""},
+	 { "StandardGpuResourcesImpl_getBlasHandle", _wrap_StandardGpuResourcesImpl_getBlasHandle, METH_VARARGS, NULL},
+	 { "StandardGpuResourcesImpl_getAlternateStreams", _wrap_StandardGpuResourcesImpl_getAlternateStreams, METH_VARARGS, NULL},
+	 { "StandardGpuResourcesImpl_allocMemory", _wrap_StandardGpuResourcesImpl_allocMemory, METH_VARARGS, " Allocate non-temporary GPU memory"},
+	 { "StandardGpuResourcesImpl_deallocMemory", _wrap_StandardGpuResourcesImpl_deallocMemory, METH_VARARGS, " Returns a previous allocation"},
+	 { "StandardGpuResourcesImpl_getTempMemoryAvailable", _wrap_StandardGpuResourcesImpl_getTempMemoryAvailable, METH_VARARGS, NULL},
+	 { "StandardGpuResourcesImpl_getMemoryInfo", _wrap_StandardGpuResourcesImpl_getMemoryInfo, METH_O, " Export a description of memory used for Python"},
+	 { "StandardGpuResourcesImpl_getPinnedMemory", _wrap_StandardGpuResourcesImpl_getPinnedMemory, METH_O, NULL},
+	 { "StandardGpuResourcesImpl_getAsyncCopyStream", _wrap_StandardGpuResourcesImpl_getAsyncCopyStream, METH_VARARGS, NULL},
+	 { "StandardGpuResourcesImpl_swigregister", StandardGpuResourcesImpl_swigregister, METH_O, NULL},
+	 { "StandardGpuResourcesImpl_swiginit", StandardGpuResourcesImpl_swiginit, METH_VARARGS, NULL},
+	 { "new_StandardGpuResources", _wrap_new_StandardGpuResources, METH_NOARGS, NULL},
+	 { "delete_StandardGpuResources", _wrap_delete_StandardGpuResources, METH_O, NULL},
+	 { "StandardGpuResources_getResources", _wrap_StandardGpuResources_getResources, METH_O, NULL},
+	 { "StandardGpuResources_noTempMemory", _wrap_StandardGpuResources_noTempMemory, METH_O, "\n"
+		"Disable allocation of temporary memory; all temporary memory\n"
+		"requests will call hipMalloc / hipFree at the point of use\n"
+		""},
+	 { "StandardGpuResources_setTempMemory", _wrap_StandardGpuResources_setTempMemory, METH_VARARGS, "\n"
+		"Specify that we wish to use a certain fixed size of memory on\n"
+		"all devices as temporary memory. This is the upper bound for the GPU\n"
+		"memory that we will reserve. We will never go above 1.5 GiB on any GPU;\n"
+		"smaller GPUs (with <= 4 GiB or <= 8 GiB) will use less memory than that.\n"
+		"To avoid any temporary memory allocation, pass 0.\n"
+		""},
+	 { "StandardGpuResources_setPinnedMemory", _wrap_StandardGpuResources_setPinnedMemory, METH_VARARGS, "\n"
+		"Set amount of pinned memory to allocate, for async GPU <-> CPU\n"
+		"transfers\n"
+		""},
+	 { "StandardGpuResources_setDefaultStream", _wrap_StandardGpuResources_setDefaultStream, METH_VARARGS, "\n"
+		"Called to change the stream for work ordering. We do not own `stream`;\n"
+		"i.e., it will not be destroyed when the GpuResources object gets cleaned\n"
+		"up.\n"
+		"We are guaranteed that all Faiss GPU work is ordered with respect to\n"
+		"this stream upon exit from an index or other Faiss GPU call.\n"
+		""},
+	 { "StandardGpuResources_revertDefaultStream", _wrap_StandardGpuResources_revertDefaultStream, METH_VARARGS, "\n"
+		"Revert the default stream to the original stream managed by this\n"
+		"resources object, in case someone called `setDefaultStream`.\n"
+		""},
+	 { "StandardGpuResources_setDefaultNullStreamAllDevices", _wrap_StandardGpuResources_setDefaultNullStreamAllDevices, METH_O, "\n"
+		"Called to change the work ordering streams to the null stream\n"
+		"for all devices\n"
+		""},
+	 { "StandardGpuResources_getMemoryInfo", _wrap_StandardGpuResources_getMemoryInfo, METH_O, " Export a description of memory used for Python"},
+	 { "StandardGpuResources_getDefaultStream", _wrap_StandardGpuResources_getDefaultStream, METH_VARARGS, " Returns the current default stream"},
+	 { "StandardGpuResources_getTempMemoryAvailable", _wrap_StandardGpuResources_getTempMemoryAvailable, METH_VARARGS, " Returns the current amount of temp memory available"},
+	 { "StandardGpuResources_syncDefaultStreamCurrentDevice", _wrap_StandardGpuResources_syncDefaultStreamCurrentDevice, METH_O, " Synchronize our default stream with the CPU"},
+	 { "StandardGpuResources_setLogMemoryAllocations", _wrap_StandardGpuResources_setLogMemoryAllocations, METH_VARARGS, "\n"
+		"If enabled, will print every GPU memory allocation and deallocation to\n"
+		"standard output\n"
+		""},
+	 { "StandardGpuResources_swigregister", StandardGpuResources_swigregister, METH_O, NULL},
+	 { "StandardGpuResources_swiginit", StandardGpuResources_swiginit, METH_VARARGS, NULL},
+	 { "cast_integer_to_cudastream_t", _wrap_cast_integer_to_cudastream_t, METH_O, NULL},
+	 { "cast_cudastream_t_to_integer", _wrap_cast_cudastream_t_to_integer, METH_O, NULL},
+	 { "get_compile_options", _wrap_get_compile_options, METH_NOARGS, " get compile options"},
+	 { "getmillisecs", _wrap_getmillisecs, METH_NOARGS, " ms elapsed since some arbitrary epoch"},
+	 { "get_mem_usage_kb", _wrap_get_mem_usage_kb, METH_NOARGS, " get current RSS usage in kB"},
+	 { "get_cycles", _wrap_get_cycles, METH_NOARGS, NULL},
+	 { "fvec_madd", _wrap_fvec_madd, METH_VARARGS, "\n"
+		" compute c := a + bf * b for a, b and c tables\n"
+		"\n"
+		":type n: int\n"
+		":param n:   size of the tables\n"
+		":type a: float\n"
+		":param a:   size n\n"
+		":type b: float\n"
+		":param b:   size n\n"
+		":type c: float\n"
+		":param c:   restult table, size n\n"
+		""},
+	 { "fvec_madd_and_argmin", _wrap_fvec_madd_and_argmin, METH_VARARGS, "\n"
+		" same as fvec_madd, also return index of the min of the result table\n"
+		":rtype: int\n"
+		":return: index of the min of table c\n"
+		""},
+	 { "reflection", _wrap_reflection, METH_VARARGS, NULL},
+	 { "matrix_qr", _wrap_matrix_qr, METH_VARARGS, "\n"
+		" compute the Q of the QR decomposition for m > n\n"
+		":type a: float\n"
+		":param a:   size n * m: input matrix and output Q\n"
+		""},
+	 { "ranklist_handle_ties", _wrap_ranklist_handle_ties, METH_VARARGS, " distances are supposed to be sorted. Sorts indices with same distance"},
+	 { "ranklist_intersection_size", _wrap_ranklist_intersection_size, METH_VARARGS, "\n"
+		" count the number of common elements between v1 and v2\n"
+		"algorithm = sorting + bissection to avoid double-counting duplicates\n"
+		""},
+	 { "merge_result_table_with", _wrap_merge_result_table_with, METH_VARARGS, "\n"
+		" merge a result table into another one\n"
+		"\n"
+		":type I0: int\n"
+		":param I0:, D0       first result table, size (n, k)\n"
+		":type I1: int\n"
+		":param I1:, D1       second result table, size (n, k)\n"
+		":type keep_min: boolean, optional\n"
+		":param keep_min:     if true, keep min values, otherwise keep max\n"
+		":type translation: int, optional\n"
+		":param translation:  add this value to all I1's indexes\n"
+		":rtype: int\n"
+		":return: nb of values that were taken from the second table\n"
+		""},
+	 { "imbalance_factor", _wrap_imbalance_factor, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"a balanced assignment has a IF of 1\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"same, takes a histogram as input\n"
+		""},
+	 { "fvec_argsort", _wrap_fvec_argsort, METH_VARARGS, NULL},
+	 { "fvec_argsort_parallel", _wrap_fvec_argsort_parallel, METH_VARARGS, NULL},
+	 { "ivec_hist", _wrap_ivec_hist, METH_VARARGS, " compute histogram on v"},
+	 { "bincode_hist", _wrap_bincode_hist, METH_VARARGS, "\n"
+		" Compute histogram of bits on a code array\n"
+		"\n"
+		":type codes: uint8_t\n"
+		":param codes:   size(n, nbits / 8)\n"
+		":type hist: int\n"
+		":param hist:    size(nbits): nb of 1s in the array of codes\n"
+		""},
+	 { "ivec_checksum", _wrap_ivec_checksum, METH_VARARGS, " compute a checksum on a table."},
+	 { "fvecs_maybe_subsample", _wrap_fvecs_maybe_subsample, METH_VARARGS, "\n"
+		" random subsamples a set of vectors if there are too many of them\n"
+		"\n"
+		":type d: int\n"
+		":param d:      dimension of the vectors\n"
+		":type n: int\n"
+		":param n:      on input: nb of input vectors, output: nb of output vectors\n"
+		":type nmax: int\n"
+		":param nmax:   max nb of vectors to keep\n"
+		":type x: float\n"
+		":param x:      input array, size *n-by-d\n"
+		":type seed: int, optional\n"
+		":param seed:   random seed to use for sampling\n"
+		":rtype: float\n"
+		":return: x or an array allocated with new [] with *n vectors\n"
+		""},
+	 { "binary_to_real", _wrap_binary_to_real, METH_VARARGS, "\n"
+		" Convert binary vector to +1/-1 valued float vector.\n"
+		"\n"
+		":type d: int\n"
+		":param d:      dimension of the vector (multiple of 8)\n"
+		":type x_in: uint8_t\n"
+		":param x_in:   input binary vector (uint8_t table of size d / 8)\n"
+		":type x_out: float\n"
+		":param x_out:  output float vector (float table of size d)\n"
+		""},
+	 { "real_to_binary", _wrap_real_to_binary, METH_VARARGS, "\n"
+		" Convert float vector to binary vector. Components > 0 are converted to 1,\n"
+		"others to 0.\n"
+		"\n"
+		":type d: int\n"
+		":param d:      dimension of the vector (multiple of 8)\n"
+		":type x_in: float\n"
+		":param x_in:   input float vector (float table of size d)\n"
+		":type x_out: uint8_t\n"
+		":param x_out:  output binary vector (uint8_t table of size d / 8)\n"
+		""},
+	 { "hash_bytes", _wrap_hash_bytes, METH_VARARGS, " A reasonable hashing function"},
+	 { "check_openmp", _wrap_check_openmp, METH_NOARGS, " Whether OpenMP annotations were respected."},
+	 { "fvec_L2sqr", _wrap_fvec_L2sqr, METH_VARARGS, " Squared L2 distance between two vectors"},
+	 { "fvec_inner_product", _wrap_fvec_inner_product, METH_VARARGS, " inner product"},
+	 { "fvec_L1", _wrap_fvec_L1, METH_VARARGS, " L1 distance"},
+	 { "fvec_Linf", _wrap_fvec_Linf, METH_VARARGS, " infinity distance"},
+	 { "pairwise_L2sqr", _wrap_pairwise_L2sqr, METH_VARARGS, "\n"
+		" Compute pairwise distances between sets of vectors\n"
+		"\n"
+		":type d: int\n"
+		":param d:     dimension of the vectors\n"
+		":type nq: int\n"
+		":param nq:    nb of query vectors\n"
+		":type nb: int\n"
+		":param nb:    nb of database vectors\n"
+		":type xq: float\n"
+		":param xq:    query vectors (size nq * d)\n"
+		":type xb: float\n"
+		":param xb:    database vectors (size nb * d)\n"
+		":type dis: float\n"
+		":param dis:   output distances (size nq * nb)\n"
+		":param ldq,ldb:, ldd strides for the matrices\n"
+		""},
+	 { "fvec_inner_products_ny", _wrap_fvec_inner_products_ny, METH_VARARGS, NULL},
+	 { "fvec_L2sqr_ny", _wrap_fvec_L2sqr_ny, METH_VARARGS, NULL},
+	 { "fvec_norm_L2sqr", _wrap_fvec_norm_L2sqr, METH_VARARGS, " squared norm of a vector"},
+	 { "fvec_norms_L2", _wrap_fvec_norms_L2, METH_VARARGS, "\n"
+		" compute the L2 norms for a set of vectors\n"
+		"\n"
+		":type norms: float\n"
+		":param norms:    output norms, size nx\n"
+		":type x: float\n"
+		":param x:        set of vectors, size nx * d\n"
+		""},
+	 { "fvec_norms_L2sqr", _wrap_fvec_norms_L2sqr, METH_VARARGS, " same as fvec_norms_L2, but computes squared norms"},
+	 { "fvec_renorm_L2", _wrap_fvec_renorm_L2, METH_VARARGS, NULL},
+	 { "inner_product_to_L2sqr", _wrap_inner_product_to_L2sqr, METH_VARARGS, NULL},
+	 { "fvec_add", _wrap_fvec_add, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		" compute c := a + b for vectors\n"
+		"\n"
+		"c and a can overlap, c and b can overlap\n"
+		"\n"
+		":type a: float\n"
+		":param a: size d\n"
+		":type b: float\n"
+		":param b: size d\n"
+		":type c: float\n"
+		":param c: size d\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		" compute c := a + b for a, c vectors and b a scalar\n"
+		"\n"
+		"c and a can overlap\n"
+		"\n"
+		":type a: float\n"
+		":param a: size d\n"
+		":type c: float\n"
+		":param c: size d\n"
+		""},
+	 { "fvec_sub", _wrap_fvec_sub, METH_VARARGS, "\n"
+		" compute c := a - b for vectors\n"
+		"\n"
+		"c and a can overlap, c and b can overlap\n"
+		"\n"
+		":type a: float\n"
+		":param a: size d\n"
+		":type b: float\n"
+		":param b: size d\n"
+		":type c: float\n"
+		":param c: size d\n"
+		""},
+	 { "fvec_inner_products_by_idx", _wrap_fvec_inner_products_by_idx, METH_VARARGS, NULL},
+	 { "fvec_L2sqr_by_idx", _wrap_fvec_L2sqr_by_idx, METH_VARARGS, NULL},
+	 { "pairwise_indexed_L2sqr", _wrap_pairwise_indexed_L2sqr, METH_VARARGS, "\n"
+		" compute dis[j] = L2sqr(x[ix[j]], y[iy[j]]) forall j=0..n-1\n"
+		"\n"
+		":type x: float\n"
+		":param x:  size (max(ix) + 1, d)\n"
+		":type y: float\n"
+		":param y:  size (max(iy) + 1, d)\n"
+		":type ix: int\n"
+		":param ix: size n\n"
+		":type iy: int\n"
+		":param iy: size n\n"
+		":type dis: float\n"
+		":param dis: size n\n"
+		""},
+	 { "pairwise_indexed_inner_product", _wrap_pairwise_indexed_inner_product, METH_VARARGS, NULL},
+	 { "knn_inner_product", _wrap_knn_inner_product, METH_VARARGS, "\n"
+		" Return the k nearest neighors of each of the nx vectors x among the ny\n"
+		" vector y, w.r.t to max inner product\n"
+		"\n"
+		":type x: float\n"
+		":param x:    query vectors, size nx * d\n"
+		":type y: float\n"
+		":param y:    database vectors, size ny * d\n"
+		":type res: :py:class:`float_minheap_array_t`\n"
+		":param res:  result array, which also provides k. Sorted on output\n"
+		""},
+	 { "knn_L2sqr", _wrap_knn_L2sqr, METH_VARARGS, "\n"
+		"Same as knn_inner_product, for the L2 distance\n"
+		":type y_norm2: float, optional\n"
+		":param y_norm2:    norms for the y vectors (nullptr or size ny)\n"
+		""},
+	 { "knn_inner_products_by_idx", _wrap_knn_inner_products_by_idx, METH_VARARGS, NULL},
+	 { "knn_L2sqr_by_idx", _wrap_knn_L2sqr_by_idx, METH_VARARGS, NULL},
+	 { "range_search_L2sqr", _wrap_range_search_L2sqr, METH_VARARGS, "\n"
+		" Return the k nearest neighors of each of the nx vectors x among the ny\n"
+		" vector y, w.r.t to max inner product\n"
+		"\n"
+		":type x: float\n"
+		":param x:      query vectors, size nx * d\n"
+		":type y: float\n"
+		":param y:      database vectors, size ny * d\n"
+		":type radius: float\n"
+		":param radius: search radius around the x vectors\n"
+		":type result: :py:class:`RangeSearchResult`\n"
+		":param result: result structure\n"
+		""},
+	 { "range_search_inner_product", _wrap_range_search_inner_product, METH_VARARGS, " same as range_search_L2sqr for the inner product similarity"},
+	 { "compute_PQ_dis_tables_dsub2", _wrap_compute_PQ_dis_tables_dsub2, METH_VARARGS, " specialized function for PQ2"},
+	 { "RandomGenerator_mt_set", _wrap_RandomGenerator_mt_set, METH_VARARGS, NULL},
+	 { "RandomGenerator_mt_get", _wrap_RandomGenerator_mt_get, METH_O, NULL},
+	 { "RandomGenerator_rand_int64", _wrap_RandomGenerator_rand_int64, METH_O, " random int64_t"},
+	 { "RandomGenerator_rand_int", _wrap_RandomGenerator_rand_int, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"random positive integer\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"generate random integer between 0 and max-1\n"
+		""},
+	 { "RandomGenerator_rand_float", _wrap_RandomGenerator_rand_float, METH_O, " between 0 and 1"},
+	 { "RandomGenerator_rand_double", _wrap_RandomGenerator_rand_double, METH_O, NULL},
+	 { "new_RandomGenerator", _wrap_new_RandomGenerator, METH_VARARGS, NULL},
+	 { "delete_RandomGenerator", _wrap_delete_RandomGenerator, METH_O, NULL},
+	 { "RandomGenerator_swigregister", RandomGenerator_swigregister, METH_O, NULL},
+	 { "RandomGenerator_swiginit", RandomGenerator_swiginit, METH_VARARGS, NULL},
+	 { "float_rand", _wrap_float_rand, METH_VARARGS, NULL},
+	 { "float_randn", _wrap_float_randn, METH_VARARGS, NULL},
+	 { "int64_rand", _wrap_int64_rand, METH_VARARGS, NULL},
+	 { "byte_rand", _wrap_byte_rand, METH_VARARGS, NULL},
+	 { "int64_rand_max", _wrap_int64_rand_max, METH_VARARGS, NULL},
+	 { "rand_perm", _wrap_rand_perm, METH_VARARGS, NULL},
+	 { "Index_d_set", _wrap_Index_d_set, METH_VARARGS, " vector dimension"},
+	 { "Index_d_get", _wrap_Index_d_get, METH_O, " vector dimension"},
+	 { "Index_ntotal_set", _wrap_Index_ntotal_set, METH_VARARGS, " total nb of indexed vectors"},
+	 { "Index_ntotal_get", _wrap_Index_ntotal_get, METH_O, " total nb of indexed vectors"},
+	 { "Index_verbose_set", _wrap_Index_verbose_set, METH_VARARGS, " verbosity level"},
+	 { "Index_verbose_get", _wrap_Index_verbose_get, METH_O, " verbosity level"},
+	 { "Index_is_trained_set", _wrap_Index_is_trained_set, METH_VARARGS, "\n"
+		"set if the Index does not require training, or if training is\n"
+		"done already\n"
+		""},
+	 { "Index_is_trained_get", _wrap_Index_is_trained_get, METH_O, "\n"
+		"set if the Index does not require training, or if training is\n"
+		"done already\n"
+		""},
+	 { "Index_metric_type_set", _wrap_Index_metric_type_set, METH_VARARGS, " type of metric this index uses for search"},
+	 { "Index_metric_type_get", _wrap_Index_metric_type_get, METH_O, " type of metric this index uses for search"},
+	 { "Index_metric_arg_set", _wrap_Index_metric_arg_set, METH_VARARGS, " argument of the metric type"},
+	 { "Index_metric_arg_get", _wrap_Index_metric_arg_get, METH_O, " argument of the metric type"},
+	 { "delete_Index", _wrap_delete_Index, METH_O, NULL},
+	 { "Index_train", _wrap_Index_train, METH_VARARGS, "\n"
+		" Perform training on a representative set of vectors\n"
+		"\n"
+		":type n: int\n"
+		":param n:      nb of training vectors\n"
+		":type x: float\n"
+		":param x:      training vecors, size n * d\n"
+		""},
+	 { "Index_add", _wrap_Index_add, METH_VARARGS, "\n"
+		" Add n vectors of dimension d to the index.\n"
+		"\n"
+		"Vectors are implicitly assigned labels ntotal .. ntotal + n - 1\n"
+		"This function slices the input vectors in chunks smaller than\n"
+		"blocksize_add and calls add_core.\n"
+		":type x: float\n"
+		":param x:      input matrix, size n * d\n"
+		""},
+	 { "Index_add_with_ids", _wrap_Index_add_with_ids, METH_VARARGS, "\n"
+		" Same as add, but stores xids instead of sequential ids.\n"
+		"\n"
+		"The default implementation fails with an assertion, as it is\n"
+		"not supported by all indexes.\n"
+		"\n"
+		":type xids: int\n"
+		":param xids: if non-null, ids to store for the vectors (size n)\n"
+		""},
+	 { "Index_search", _wrap_Index_search, METH_VARARGS, "\n"
+		" query n vectors of dimension d to the index.\n"
+		"\n"
+		"return at most k vectors. If there are not enough results for a\n"
+		"query, the result array is padded with -1s.\n"
+		"\n"
+		":type x: float\n"
+		":param x:           input vectors to search, size n * d\n"
+		":type labels: int\n"
+		":param labels:      output labels of the NNs, size n*k\n"
+		":type distances: float\n"
+		":param distances:   output pairwise distances, size n*k\n"
+		""},
+	 { "Index_range_search", _wrap_Index_range_search, METH_VARARGS, "\n"
+		" query n vectors of dimension d to the index.\n"
+		"\n"
+		"return all vectors with distance < radius. Note that many\n"
+		"indexes do not implement the range_search (only the k-NN search\n"
+		"is mandatory).\n"
+		"\n"
+		":type x: float\n"
+		":param x:           input vectors to search, size n * d\n"
+		":type radius: float\n"
+		":param radius:      search radius\n"
+		":type result: :py:class:`RangeSearchResult`\n"
+		":param result:      result table\n"
+		""},
+	 { "Index_assign", _wrap_Index_assign, METH_VARARGS, "\n"
+		" return the indexes of the k vectors closest to the query x.\n"
+		"\n"
+		"This function is identical as search but only return labels of neighbors.\n"
+		":type x: float\n"
+		":param x:           input vectors to search, size n * d\n"
+		":type labels: int\n"
+		":param labels:      output labels of the NNs, size n*k\n"
+		""},
+	 { "Index_reset", _wrap_Index_reset, METH_O, " removes all elements from the database."},
+	 { "Index_remove_ids", _wrap_Index_remove_ids, METH_VARARGS, "\n"
+		" removes IDs from the index. Not supported by all\n"
+		"indexes. Returns the number of elements removed.\n"
+		""},
+	 { "Index_reconstruct", _wrap_Index_reconstruct, METH_VARARGS, "\n"
+		" Reconstruct a stored vector (or an approximation if lossy coding)\n"
+		"\n"
+		"this function may not be defined for some indexes\n"
+		":type key: int\n"
+		":param key:         id of the vector to reconstruct\n"
+		":type recons: float\n"
+		":param recons:      reconstucted vector (size d)\n"
+		""},
+	 { "Index_reconstruct_n", _wrap_Index_reconstruct_n, METH_VARARGS, "\n"
+		" Reconstruct vectors i0 to i0 + ni - 1\n"
+		"\n"
+		"this function may not be defined for some indexes\n"
+		":type recons: float\n"
+		":param recons:      reconstucted vector (size ni * d)\n"
+		""},
+	 { "Index_search_and_reconstruct", _wrap_Index_search_and_reconstruct, METH_VARARGS, "\n"
+		" Similar to search, but also reconstructs the stored vectors (or an\n"
+		"approximation in the case of lossy coding) for the search results.\n"
+		"\n"
+		"If there are not enough results for a query, the resulting arrays\n"
+		"is padded with -1s.\n"
+		"\n"
+		":type recons: float\n"
+		":param recons:      reconstructed vectors size (n, k, d)\n"
+		""},
+	 { "Index_compute_residual", _wrap_Index_compute_residual, METH_VARARGS, "\n"
+		" Computes a residual vector after indexing encoding.\n"
+		"\n"
+		"The residual vector is the difference between a vector and the\n"
+		"reconstruction that can be decoded from its representation in\n"
+		"the index. The residual can be used for multiple-stage indexing\n"
+		"methods, like IndexIVF's methods.\n"
+		"\n"
+		":type x: float\n"
+		":param x:           input vector, size d\n"
+		":type residual: float\n"
+		":param residual:    output residual vector, size d\n"
+		":type key: int\n"
+		":param key:         encoded index, as returned by search and assign\n"
+		""},
+	 { "Index_compute_residual_n", _wrap_Index_compute_residual_n, METH_VARARGS, "\n"
+		" Computes a residual vector after indexing encoding (batch form).\n"
+		"Equivalent to calling compute_residual for each vector.\n"
+		"\n"
+		"The residual vector is the difference between a vector and the\n"
+		"reconstruction that can be decoded from its representation in\n"
+		"the index. The residual can be used for multiple-stage indexing\n"
+		"methods, like IndexIVF's methods.\n"
+		"\n"
+		":type n: int\n"
+		":param n:           number of vectors\n"
+		":type xs: float\n"
+		":param xs:          input vectors, size (n x d)\n"
+		":type residuals: float\n"
+		":param residuals:   output residual vectors, size (n x d)\n"
+		":type keys: int\n"
+		":param keys:        encoded index, as returned by search and assign\n"
+		""},
+	 { "Index_get_distance_computer", _wrap_Index_get_distance_computer, METH_O, "\n"
+		" Get a DistanceComputer (defined in AuxIndexStructures) object\n"
+		"for this kind of index.\n"
+		"\n"
+		"DistanceComputer is implemented for indexes that support random\n"
+		"access of their vectors.\n"
+		""},
+	 { "Index_sa_code_size", _wrap_Index_sa_code_size, METH_O, " size of the produced codes in bytes"},
+	 { "Index_sa_encode", _wrap_Index_sa_encode, METH_VARARGS, "\n"
+		" encode a set of vectors\n"
+		"\n"
+		":type n: int\n"
+		":param n:       number of vectors\n"
+		":type x: float\n"
+		":param x:       input vectors, size n * d\n"
+		":type bytes: uint8_t\n"
+		":param bytes:   output encoded vectors, size n * sa_code_size()\n"
+		""},
+	 { "Index_sa_decode", _wrap_Index_sa_decode, METH_VARARGS, "\n"
+		" encode a set of vectors\n"
+		"\n"
+		":type n: int\n"
+		":param n:       number of vectors\n"
+		":type bytes: uint8_t\n"
+		":param bytes:   input encoded vectors, size n * sa_code_size()\n"
+		":type x: float\n"
+		":param x:       output vectors, size n * d\n"
+		""},
+	 { "Index_swigregister", Index_swigregister, METH_O, NULL},
+	 { "IndexFlatCodes_code_size_set", _wrap_IndexFlatCodes_code_size_set, METH_VARARGS, NULL},
+	 { "IndexFlatCodes_code_size_get", _wrap_IndexFlatCodes_code_size_get, METH_O, NULL},
+	 { "IndexFlatCodes_codes_set", _wrap_IndexFlatCodes_codes_set, METH_VARARGS, " encoded dataset, size ntotal * code_size"},
+	 { "IndexFlatCodes_codes_get", _wrap_IndexFlatCodes_codes_get, METH_O, " encoded dataset, size ntotal * code_size"},
+	 { "IndexFlatCodes_add", _wrap_IndexFlatCodes_add, METH_VARARGS, " default add uses sa_encode"},
+	 { "IndexFlatCodes_reset", _wrap_IndexFlatCodes_reset, METH_O, NULL},
+	 { "IndexFlatCodes_reconstruct_n", _wrap_IndexFlatCodes_reconstruct_n, METH_VARARGS, " reconstruction using the codec interface"},
+	 { "IndexFlatCodes_reconstruct", _wrap_IndexFlatCodes_reconstruct, METH_VARARGS, NULL},
+	 { "IndexFlatCodes_sa_code_size", _wrap_IndexFlatCodes_sa_code_size, METH_O, NULL},
+	 { "IndexFlatCodes_remove_ids", _wrap_IndexFlatCodes_remove_ids, METH_VARARGS, "\n"
+		" remove some ids. NB that Because of the structure of the\n"
+		"indexing structure, the semantics of this operation are\n"
+		"different from the usual ones: the new ids are shifted\n"
+		""},
+	 { "delete_IndexFlatCodes", _wrap_delete_IndexFlatCodes, METH_O, NULL},
+	 { "IndexFlatCodes_swigregister", IndexFlatCodes_swigregister, METH_O, NULL},
+	 { "IndexFlat_search", _wrap_IndexFlat_search, METH_VARARGS, NULL},
+	 { "IndexFlat_range_search", _wrap_IndexFlat_range_search, METH_VARARGS, NULL},
+	 { "IndexFlat_reconstruct", _wrap_IndexFlat_reconstruct, METH_VARARGS, NULL},
+	 { "IndexFlat_compute_distance_subset", _wrap_IndexFlat_compute_distance_subset, METH_VARARGS, "\n"
+		" compute distance with a subset of vectors\n"
+		"\n"
+		":type x: float\n"
+		":param x:       query vectors, size n * d\n"
+		":type labels: int\n"
+		":param labels:  indices of the vectors that should be compared\n"
+		"                   for each query vector, size n * k\n"
+		":type distances: float\n"
+		":param distances:\n"
+		"                   corresponding output distances, size n * k\n"
+		""},
+	 { "IndexFlat_get_xb", _wrap_IndexFlat_get_xb, METH_VARARGS, NULL},
+	 { "new_IndexFlat", _wrap_new_IndexFlat, METH_VARARGS, NULL},
+	 { "IndexFlat_get_distance_computer", _wrap_IndexFlat_get_distance_computer, METH_O, NULL},
+	 { "IndexFlat_sa_encode", _wrap_IndexFlat_sa_encode, METH_VARARGS, NULL},
+	 { "IndexFlat_sa_decode", _wrap_IndexFlat_sa_decode, METH_VARARGS, NULL},
+	 { "delete_IndexFlat", _wrap_delete_IndexFlat, METH_O, NULL},
+	 { "IndexFlat_swigregister", IndexFlat_swigregister, METH_O, NULL},
+	 { "IndexFlat_swiginit", IndexFlat_swiginit, METH_VARARGS, NULL},
+	 { "new_IndexFlatIP", _wrap_new_IndexFlatIP, METH_VARARGS, NULL},
+	 { "delete_IndexFlatIP", _wrap_delete_IndexFlatIP, METH_O, NULL},
+	 { "IndexFlatIP_swigregister", IndexFlatIP_swigregister, METH_O, NULL},
+	 { "IndexFlatIP_swiginit", IndexFlatIP_swiginit, METH_VARARGS, NULL},
+	 { "new_IndexFlatL2", _wrap_new_IndexFlatL2, METH_VARARGS, NULL},
+	 { "delete_IndexFlatL2", _wrap_delete_IndexFlatL2, METH_O, NULL},
+	 { "IndexFlatL2_swigregister", IndexFlatL2_swigregister, METH_O, NULL},
+	 { "IndexFlatL2_swiginit", IndexFlatL2_swiginit, METH_VARARGS, NULL},
+	 { "IndexFlat1D_continuous_update_set", _wrap_IndexFlat1D_continuous_update_set, METH_VARARGS, " is the permutation updated continuously?"},
+	 { "IndexFlat1D_continuous_update_get", _wrap_IndexFlat1D_continuous_update_get, METH_O, " is the permutation updated continuously?"},
+	 { "IndexFlat1D_perm_set", _wrap_IndexFlat1D_perm_set, METH_VARARGS, " sorted database indices"},
+	 { "IndexFlat1D_perm_get", _wrap_IndexFlat1D_perm_get, METH_O, " sorted database indices"},
+	 { "new_IndexFlat1D", _wrap_new_IndexFlat1D, METH_VARARGS, NULL},
+	 { "IndexFlat1D_update_permutation", _wrap_IndexFlat1D_update_permutation, METH_O, "\n"
+		"if not continuous_update, call this between the last add and\n"
+		"the first search\n"
+		""},
+	 { "IndexFlat1D_add", _wrap_IndexFlat1D_add, METH_VARARGS, NULL},
+	 { "IndexFlat1D_reset", _wrap_IndexFlat1D_reset, METH_O, NULL},
+	 { "IndexFlat1D_search", _wrap_IndexFlat1D_search, METH_VARARGS, " Warn: the distances returned are L1 not L2"},
+	 { "delete_IndexFlat1D", _wrap_delete_IndexFlat1D, METH_O, NULL},
+	 { "IndexFlat1D_swigregister", IndexFlat1D_swigregister, METH_O, NULL},
+	 { "IndexFlat1D_swiginit", IndexFlat1D_swiginit, METH_VARARGS, NULL},
+	 { "ClusteringParameters_niter_set", _wrap_ClusteringParameters_niter_set, METH_VARARGS, " clustering iterations"},
+	 { "ClusteringParameters_niter_get", _wrap_ClusteringParameters_niter_get, METH_O, " clustering iterations"},
+	 { "ClusteringParameters_nredo_set", _wrap_ClusteringParameters_nredo_set, METH_VARARGS, " redo clustering this many times and keep best"},
+	 { "ClusteringParameters_nredo_get", _wrap_ClusteringParameters_nredo_get, METH_O, " redo clustering this many times and keep best"},
+	 { "ClusteringParameters_verbose_set", _wrap_ClusteringParameters_verbose_set, METH_VARARGS, NULL},
+	 { "ClusteringParameters_verbose_get", _wrap_ClusteringParameters_verbose_get, METH_O, NULL},
+	 { "ClusteringParameters_spherical_set", _wrap_ClusteringParameters_spherical_set, METH_VARARGS, " do we want normalized centroids?"},
+	 { "ClusteringParameters_spherical_get", _wrap_ClusteringParameters_spherical_get, METH_O, " do we want normalized centroids?"},
+	 { "ClusteringParameters_int_centroids_set", _wrap_ClusteringParameters_int_centroids_set, METH_VARARGS, " round centroids coordinates to integer"},
+	 { "ClusteringParameters_int_centroids_get", _wrap_ClusteringParameters_int_centroids_get, METH_O, " round centroids coordinates to integer"},
+	 { "ClusteringParameters_update_index_set", _wrap_ClusteringParameters_update_index_set, METH_VARARGS, " re-train index after each iteration?"},
+	 { "ClusteringParameters_update_index_get", _wrap_ClusteringParameters_update_index_get, METH_O, " re-train index after each iteration?"},
+	 { "ClusteringParameters_frozen_centroids_set", _wrap_ClusteringParameters_frozen_centroids_set, METH_VARARGS, "\n"
+		"use the centroids provided as input and do not\n"
+		"change them during iterations\n"
+		""},
+	 { "ClusteringParameters_frozen_centroids_get", _wrap_ClusteringParameters_frozen_centroids_get, METH_O, "\n"
+		"use the centroids provided as input and do not\n"
+		"change them during iterations\n"
+		""},
+	 { "ClusteringParameters_min_points_per_centroid_set", _wrap_ClusteringParameters_min_points_per_centroid_set, METH_VARARGS, " otherwise you get a warning"},
+	 { "ClusteringParameters_min_points_per_centroid_get", _wrap_ClusteringParameters_min_points_per_centroid_get, METH_O, " otherwise you get a warning"},
+	 { "ClusteringParameters_max_points_per_centroid_set", _wrap_ClusteringParameters_max_points_per_centroid_set, METH_VARARGS, " to limit size of dataset"},
+	 { "ClusteringParameters_max_points_per_centroid_get", _wrap_ClusteringParameters_max_points_per_centroid_get, METH_O, " to limit size of dataset"},
+	 { "ClusteringParameters_seed_set", _wrap_ClusteringParameters_seed_set, METH_VARARGS, " seed for the random number generator"},
+	 { "ClusteringParameters_seed_get", _wrap_ClusteringParameters_seed_get, METH_O, " seed for the random number generator"},
+	 { "ClusteringParameters_decode_block_size_set", _wrap_ClusteringParameters_decode_block_size_set, METH_VARARGS, " how many vectors at a time to decode"},
+	 { "ClusteringParameters_decode_block_size_get", _wrap_ClusteringParameters_decode_block_size_get, METH_O, " how many vectors at a time to decode"},
+	 { "new_ClusteringParameters", _wrap_new_ClusteringParameters, METH_NOARGS, " sets reasonable defaults"},
+	 { "delete_ClusteringParameters", _wrap_delete_ClusteringParameters, METH_O, NULL},
+	 { "ClusteringParameters_swigregister", ClusteringParameters_swigregister, METH_O, NULL},
+	 { "ClusteringParameters_swiginit", ClusteringParameters_swiginit, METH_VARARGS, NULL},
+	 { "ClusteringIterationStats_obj_set", _wrap_ClusteringIterationStats_obj_set, METH_VARARGS, " objective values (sum of distances reported by index)"},
+	 { "ClusteringIterationStats_obj_get", _wrap_ClusteringIterationStats_obj_get, METH_O, " objective values (sum of distances reported by index)"},
+	 { "ClusteringIterationStats_time_set", _wrap_ClusteringIterationStats_time_set, METH_VARARGS, " seconds for iteration"},
+	 { "ClusteringIterationStats_time_get", _wrap_ClusteringIterationStats_time_get, METH_O, " seconds for iteration"},
+	 { "ClusteringIterationStats_time_search_set", _wrap_ClusteringIterationStats_time_search_set, METH_VARARGS, " seconds for just search"},
+	 { "ClusteringIterationStats_time_search_get", _wrap_ClusteringIterationStats_time_search_get, METH_O, " seconds for just search"},
+	 { "ClusteringIterationStats_imbalance_factor_set", _wrap_ClusteringIterationStats_imbalance_factor_set, METH_VARARGS, " imbalance factor of iteration"},
+	 { "ClusteringIterationStats_imbalance_factor_get", _wrap_ClusteringIterationStats_imbalance_factor_get, METH_O, " imbalance factor of iteration"},
+	 { "ClusteringIterationStats_nsplit_set", _wrap_ClusteringIterationStats_nsplit_set, METH_VARARGS, " number of cluster splits"},
+	 { "ClusteringIterationStats_nsplit_get", _wrap_ClusteringIterationStats_nsplit_get, METH_O, " number of cluster splits"},
+	 { "new_ClusteringIterationStats", _wrap_new_ClusteringIterationStats, METH_NOARGS, NULL},
+	 { "delete_ClusteringIterationStats", _wrap_delete_ClusteringIterationStats, METH_O, NULL},
+	 { "ClusteringIterationStats_swigregister", ClusteringIterationStats_swigregister, METH_O, NULL},
+	 { "ClusteringIterationStats_swiginit", ClusteringIterationStats_swiginit, METH_VARARGS, NULL},
+	 { "Clustering_d_set", _wrap_Clustering_d_set, METH_VARARGS, " dimension of the vectors"},
+	 { "Clustering_d_get", _wrap_Clustering_d_get, METH_O, " dimension of the vectors"},
+	 { "Clustering_k_set", _wrap_Clustering_k_set, METH_VARARGS, " nb of centroids"},
+	 { "Clustering_k_get", _wrap_Clustering_k_get, METH_O, " nb of centroids"},
+	 { "Clustering_centroids_set", _wrap_Clustering_centroids_set, METH_VARARGS, "\n"
+		" centroids (k * d)\n"
+		"if centroids are set on input to train, they will be used as\n"
+		"initialization\n"
+		""},
+	 { "Clustering_centroids_get", _wrap_Clustering_centroids_get, METH_O, "\n"
+		" centroids (k * d)\n"
+		"if centroids are set on input to train, they will be used as\n"
+		"initialization\n"
+		""},
+	 { "Clustering_iteration_stats_set", _wrap_Clustering_iteration_stats_set, METH_VARARGS, " stats at every iteration of clustering"},
+	 { "Clustering_iteration_stats_get", _wrap_Clustering_iteration_stats_get, METH_O, " stats at every iteration of clustering"},
+	 { "new_Clustering", _wrap_new_Clustering, METH_VARARGS, NULL},
+	 { "Clustering_train", _wrap_Clustering_train, METH_VARARGS, "\n"
+		" run k-means training\n"
+		"\n"
+		":type x: float\n"
+		":param x:          training vectors, size n * d\n"
+		":type index: :py:class:`Index`\n"
+		":param index:      index used for assignment\n"
+		":type x_weights: float, optional\n"
+		":param x_weights:  weight associated to each vector: NULL or size n\n"
+		""},
+	 { "Clustering_train_encoded", _wrap_Clustering_train_encoded, METH_VARARGS, "\n"
+		" run with encoded vectors\n"
+		"\n"
+		"win addition to train()'s parameters takes a codec as parameter\n"
+		"to decode the input vectors.\n"
+		"\n"
+		":type codec: :py:class:`Index`\n"
+		":param codec:      codec used to decode the vectors (nullptr =\n"
+		"                      vectors are in fact floats)     *\n"
+		""},
+	 { "Clustering_post_process_centroids", _wrap_Clustering_post_process_centroids, METH_O, "\n"
+		"Post-process the centroids after each centroid update.\n"
+		"includes optional L2 normalization and nearest integer rounding\n"
+		""},
+	 { "delete_Clustering", _wrap_delete_Clustering, METH_O, NULL},
+	 { "Clustering_swigregister", Clustering_swigregister, METH_O, NULL},
+	 { "Clustering_swiginit", Clustering_swiginit, METH_VARARGS, NULL},
+	 { "new_Clustering1D", _wrap_new_Clustering1D, METH_VARARGS, NULL},
+	 { "Clustering1D_train_exact", _wrap_Clustering1D_train_exact, METH_VARARGS, NULL},
+	 { "delete_Clustering1D", _wrap_delete_Clustering1D, METH_O, NULL},
+	 { "Clustering1D_swigregister", Clustering1D_swigregister, METH_O, NULL},
+	 { "Clustering1D_swiginit", Clustering1D_swiginit, METH_VARARGS, NULL},
+	 { "ProgressiveDimClusteringParameters_progressive_dim_steps_set", _wrap_ProgressiveDimClusteringParameters_progressive_dim_steps_set, METH_VARARGS, " number of incremental steps"},
+	 { "ProgressiveDimClusteringParameters_progressive_dim_steps_get", _wrap_ProgressiveDimClusteringParameters_progressive_dim_steps_get, METH_O, " number of incremental steps"},
+	 { "ProgressiveDimClusteringParameters_apply_pca_set", _wrap_ProgressiveDimClusteringParameters_apply_pca_set, METH_VARARGS, " apply PCA on input"},
+	 { "ProgressiveDimClusteringParameters_apply_pca_get", _wrap_ProgressiveDimClusteringParameters_apply_pca_get, METH_O, " apply PCA on input"},
+	 { "new_ProgressiveDimClusteringParameters", _wrap_new_ProgressiveDimClusteringParameters, METH_NOARGS, NULL},
+	 { "delete_ProgressiveDimClusteringParameters", _wrap_delete_ProgressiveDimClusteringParameters, METH_O, NULL},
+	 { "ProgressiveDimClusteringParameters_swigregister", ProgressiveDimClusteringParameters_swigregister, METH_O, NULL},
+	 { "ProgressiveDimClusteringParameters_swiginit", ProgressiveDimClusteringParameters_swiginit, METH_VARARGS, NULL},
+	 { "ProgressiveDimIndexFactory___call__", _wrap_ProgressiveDimIndexFactory___call__, METH_VARARGS, " ownership transferred to caller"},
+	 { "delete_ProgressiveDimIndexFactory", _wrap_delete_ProgressiveDimIndexFactory, METH_O, NULL},
+	 { "new_ProgressiveDimIndexFactory", _wrap_new_ProgressiveDimIndexFactory, METH_NOARGS, NULL},
+	 { "ProgressiveDimIndexFactory_swigregister", ProgressiveDimIndexFactory_swigregister, METH_O, NULL},
+	 { "ProgressiveDimIndexFactory_swiginit", ProgressiveDimIndexFactory_swiginit, METH_VARARGS, NULL},
+	 { "ProgressiveDimClustering_d_set", _wrap_ProgressiveDimClustering_d_set, METH_VARARGS, " dimension of the vectors"},
+	 { "ProgressiveDimClustering_d_get", _wrap_ProgressiveDimClustering_d_get, METH_O, " dimension of the vectors"},
+	 { "ProgressiveDimClustering_k_set", _wrap_ProgressiveDimClustering_k_set, METH_VARARGS, " nb of centroids"},
+	 { "ProgressiveDimClustering_k_get", _wrap_ProgressiveDimClustering_k_get, METH_O, " nb of centroids"},
+	 { "ProgressiveDimClustering_centroids_set", _wrap_ProgressiveDimClustering_centroids_set, METH_VARARGS, " centroids (k * d)"},
+	 { "ProgressiveDimClustering_centroids_get", _wrap_ProgressiveDimClustering_centroids_get, METH_O, " centroids (k * d)"},
+	 { "ProgressiveDimClustering_iteration_stats_set", _wrap_ProgressiveDimClustering_iteration_stats_set, METH_VARARGS, " stats at every iteration of clustering"},
+	 { "ProgressiveDimClustering_iteration_stats_get", _wrap_ProgressiveDimClustering_iteration_stats_get, METH_O, " stats at every iteration of clustering"},
+	 { "new_ProgressiveDimClustering", _wrap_new_ProgressiveDimClustering, METH_VARARGS, NULL},
+	 { "ProgressiveDimClustering_train", _wrap_ProgressiveDimClustering_train, METH_VARARGS, NULL},
+	 { "delete_ProgressiveDimClustering", _wrap_delete_ProgressiveDimClustering, METH_O, NULL},
+	 { "ProgressiveDimClustering_swigregister", ProgressiveDimClustering_swigregister, METH_O, NULL},
+	 { "ProgressiveDimClustering_swiginit", ProgressiveDimClustering_swiginit, METH_VARARGS, NULL},
+	 { "kmeans_clustering", _wrap_kmeans_clustering, METH_VARARGS, "\n"
+		" simplified interface\n"
+		"\n"
+		":type d: int\n"
+		":param d: dimension of the data\n"
+		":type n: int\n"
+		":param n: nb of training vectors\n"
+		":type k: int\n"
+		":param k: nb of output centroids\n"
+		":type x: float\n"
+		":param x: training set (size n * d)\n"
+		":type centroids: float\n"
+		":param centroids: output centroids (size k * d)\n"
+		":rtype: float\n"
+		":return: final quantization error\n"
+		""},
+	 { "pairwise_extra_distances", _wrap_pairwise_extra_distances, METH_VARARGS, "\n"
+		"Copyright (c) Facebook, Inc. and its affiliates.\n"
+		"\n"
+		"This source code is licensed under the MIT license found in the\n"
+		"LICENSE file in the root directory of this source tree.\n"
+		"  In this file are the implementations of extra metrics beyond L2\n"
+		" and inner product\n"
+		""},
+	 { "knn_extra_metrics", _wrap_knn_extra_metrics, METH_VARARGS, NULL},
+	 { "get_extra_distance_computer", _wrap_get_extra_distance_computer, METH_VARARGS, "\n"
+		"get a DistanceComputer that refers to this type of distance and\n"
+		"indexes a flat array of size nb\n"
+		""},
+	 { "ProductQuantizer_d_set", _wrap_ProductQuantizer_d_set, METH_VARARGS, " size of the input vectors"},
+	 { "ProductQuantizer_d_get", _wrap_ProductQuantizer_d_get, METH_O, " size of the input vectors"},
+	 { "ProductQuantizer_M_set", _wrap_ProductQuantizer_M_set, METH_VARARGS, " number of subquantizers"},
+	 { "ProductQuantizer_M_get", _wrap_ProductQuantizer_M_get, METH_O, " number of subquantizers"},
+	 { "ProductQuantizer_nbits_set", _wrap_ProductQuantizer_nbits_set, METH_VARARGS, " number of bits per quantization index"},
+	 { "ProductQuantizer_nbits_get", _wrap_ProductQuantizer_nbits_get, METH_O, " number of bits per quantization index"},
+	 { "ProductQuantizer_dsub_set", _wrap_ProductQuantizer_dsub_set, METH_VARARGS, " dimensionality of each subvector"},
+	 { "ProductQuantizer_dsub_get", _wrap_ProductQuantizer_dsub_get, METH_O, " dimensionality of each subvector"},
+	 { "ProductQuantizer_code_size_set", _wrap_ProductQuantizer_code_size_set, METH_VARARGS, " bytes per indexed vector"},
+	 { "ProductQuantizer_code_size_get", _wrap_ProductQuantizer_code_size_get, METH_O, " bytes per indexed vector"},
+	 { "ProductQuantizer_ksub_set", _wrap_ProductQuantizer_ksub_set, METH_VARARGS, " number of centroids for each subquantizer"},
+	 { "ProductQuantizer_ksub_get", _wrap_ProductQuantizer_ksub_get, METH_O, " number of centroids for each subquantizer"},
+	 { "ProductQuantizer_verbose_set", _wrap_ProductQuantizer_verbose_set, METH_VARARGS, " verbose during training?"},
+	 { "ProductQuantizer_verbose_get", _wrap_ProductQuantizer_verbose_get, METH_O, " verbose during training?"},
+	 { "ProductQuantizer_train_type_set", _wrap_ProductQuantizer_train_type_set, METH_VARARGS, NULL},
+	 { "ProductQuantizer_train_type_get", _wrap_ProductQuantizer_train_type_get, METH_O, NULL},
+	 { "ProductQuantizer_cp_set", _wrap_ProductQuantizer_cp_set, METH_VARARGS, " parameters used during clustering"},
+	 { "ProductQuantizer_cp_get", _wrap_ProductQuantizer_cp_get, METH_O, " parameters used during clustering"},
+	 { "ProductQuantizer_assign_index_set", _wrap_ProductQuantizer_assign_index_set, METH_VARARGS, "\n"
+		"if non-NULL, use this index for assignment (should be of size\n"
+		"d / M)\n"
+		""},
+	 { "ProductQuantizer_assign_index_get", _wrap_ProductQuantizer_assign_index_get, METH_O, "\n"
+		"if non-NULL, use this index for assignment (should be of size\n"
+		"d / M)\n"
+		""},
+	 { "ProductQuantizer_centroids_set", _wrap_ProductQuantizer_centroids_set, METH_VARARGS, " Centroid table, size M * ksub * dsub"},
+	 { "ProductQuantizer_centroids_get", _wrap_ProductQuantizer_centroids_get, METH_O, " Centroid table, size M * ksub * dsub"},
+	 { "ProductQuantizer_get_centroids", _wrap_ProductQuantizer_get_centroids, METH_VARARGS, " return the centroids associated with subvector m"},
+	 { "ProductQuantizer_train", _wrap_ProductQuantizer_train, METH_VARARGS, NULL},
+	 { "new_ProductQuantizer", _wrap_new_ProductQuantizer, METH_VARARGS, NULL},
+	 { "ProductQuantizer_set_derived_values", _wrap_ProductQuantizer_set_derived_values, METH_O, " compute derived values when d, M and nbits have been set"},
+	 { "ProductQuantizer_set_params", _wrap_ProductQuantizer_set_params, METH_VARARGS, " Define the centroids for subquantizer m"},
+	 { "ProductQuantizer_compute_code", _wrap_ProductQuantizer_compute_code, METH_VARARGS, " Quantize one vector with the product quantizer"},
+	 { "ProductQuantizer_compute_codes", _wrap_ProductQuantizer_compute_codes, METH_VARARGS, " same as compute_code for several vectors"},
+	 { "ProductQuantizer_compute_codes_with_assign_index", _wrap_ProductQuantizer_compute_codes_with_assign_index, METH_VARARGS, "\n"
+		"speed up code assignment using assign_index\n"
+		"(non-const because the index is changed)\n"
+		""},
+	 { "ProductQuantizer_decode", _wrap_ProductQuantizer_decode, METH_VARARGS, " decode a vector from a given code (or n vectors if third argument)"},
+	 { "ProductQuantizer_compute_code_from_distance_table", _wrap_ProductQuantizer_compute_code_from_distance_table, METH_VARARGS, "\n"
+		"If we happen to have the distance tables precomputed, this is\n"
+		"more efficient to compute the codes.\n"
+		""},
+	 { "ProductQuantizer_compute_distance_table", _wrap_ProductQuantizer_compute_distance_table, METH_VARARGS, "\n"
+		" Compute distance table for one vector.\n"
+		"\n"
+		"The distance table for x = [x_0 x_1 .. x_(M-1)] is a M * ksub\n"
+		"matrix that contains\n"
+		"\n"
+		"  dis_table (m, j) = || x_m - c_(m, j)||^2\n"
+		"  for m = 0..M-1 and j = 0 .. ksub - 1\n"
+		"\n"
+		"where c_(m, j) is the centroid no j of sub-quantizer m.\n"
+		"\n"
+		":type x: float\n"
+		":param x:         input vector size d\n"
+		":type dis_table: float\n"
+		":param dis_table: output table, size M * ksub\n"
+		""},
+	 { "ProductQuantizer_compute_inner_prod_table", _wrap_ProductQuantizer_compute_inner_prod_table, METH_VARARGS, NULL},
+	 { "ProductQuantizer_compute_distance_tables", _wrap_ProductQuantizer_compute_distance_tables, METH_VARARGS, "\n"
+		" compute distance table for several vectors\n"
+		":type nx: int\n"
+		":param nx:        nb of input vectors\n"
+		":type x: float\n"
+		":param x:         input vector size nx * d\n"
+		":param dis_table: output table, size nx * M * ksub\n"
+		""},
+	 { "ProductQuantizer_compute_inner_prod_tables", _wrap_ProductQuantizer_compute_inner_prod_tables, METH_VARARGS, NULL},
+	 { "ProductQuantizer_search", _wrap_ProductQuantizer_search, METH_VARARGS, "\n"
+		" perform a search (L2 distance)\n"
+		":type x: float\n"
+		":param x:        query vectors, size nx * d\n"
+		":type nx: int\n"
+		":param nx:       nb of queries\n"
+		":type codes: uint8_t\n"
+		":param codes:    database codes, size ncodes * code_size\n"
+		":type ncodes: int\n"
+		":param ncodes:   nb of nb vectors\n"
+		":type res: :py:class:`float_maxheap_array_t`\n"
+		":param res:      heap array to store results (nh == nx)\n"
+		":type init_finalize_heap: boolean, optional\n"
+		":param init_finalize_heap:  initialize heap (input) and sort (output)?\n"
+		""},
+	 { "ProductQuantizer_search_ip", _wrap_ProductQuantizer_search_ip, METH_VARARGS, " same as search, but with inner product similarity"},
+	 { "ProductQuantizer_sdc_table_set", _wrap_ProductQuantizer_sdc_table_set, METH_VARARGS, " Symmetric Distance Table"},
+	 { "ProductQuantizer_sdc_table_get", _wrap_ProductQuantizer_sdc_table_get, METH_O, " Symmetric Distance Table"},
+	 { "ProductQuantizer_compute_sdc_table", _wrap_ProductQuantizer_compute_sdc_table, METH_O, NULL},
+	 { "ProductQuantizer_search_sdc", _wrap_ProductQuantizer_search_sdc, METH_VARARGS, NULL},
+	 { "delete_ProductQuantizer", _wrap_delete_ProductQuantizer, METH_O, NULL},
+	 { "ProductQuantizer_swigregister", ProductQuantizer_swigregister, METH_O, NULL},
+	 { "ProductQuantizer_swiginit", ProductQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "PQEncoderGeneric_code_set", _wrap_PQEncoderGeneric_code_set, METH_VARARGS, " code for this vector"},
+	 { "PQEncoderGeneric_code_get", _wrap_PQEncoderGeneric_code_get, METH_O, " code for this vector"},
+	 { "PQEncoderGeneric_offset_set", _wrap_PQEncoderGeneric_offset_set, METH_VARARGS, NULL},
+	 { "PQEncoderGeneric_offset_get", _wrap_PQEncoderGeneric_offset_get, METH_O, NULL},
+	 { "PQEncoderGeneric_nbits_get", _wrap_PQEncoderGeneric_nbits_get, METH_O, " number of bits per subquantizer index"},
+	 { "PQEncoderGeneric_reg_set", _wrap_PQEncoderGeneric_reg_set, METH_VARARGS, NULL},
+	 { "PQEncoderGeneric_reg_get", _wrap_PQEncoderGeneric_reg_get, METH_O, NULL},
+	 { "new_PQEncoderGeneric", _wrap_new_PQEncoderGeneric, METH_VARARGS, NULL},
+	 { "PQEncoderGeneric_encode", _wrap_PQEncoderGeneric_encode, METH_VARARGS, NULL},
+	 { "delete_PQEncoderGeneric", _wrap_delete_PQEncoderGeneric, METH_O, NULL},
+	 { "PQEncoderGeneric_swigregister", PQEncoderGeneric_swigregister, METH_O, NULL},
+	 { "PQEncoderGeneric_swiginit", PQEncoderGeneric_swiginit, METH_VARARGS, NULL},
+	 { "PQEncoder8_code_set", _wrap_PQEncoder8_code_set, METH_VARARGS, NULL},
+	 { "PQEncoder8_code_get", _wrap_PQEncoder8_code_get, METH_O, NULL},
+	 { "new_PQEncoder8", _wrap_new_PQEncoder8, METH_VARARGS, NULL},
+	 { "PQEncoder8_encode", _wrap_PQEncoder8_encode, METH_VARARGS, NULL},
+	 { "delete_PQEncoder8", _wrap_delete_PQEncoder8, METH_O, NULL},
+	 { "PQEncoder8_swigregister", PQEncoder8_swigregister, METH_O, NULL},
+	 { "PQEncoder8_swiginit", PQEncoder8_swiginit, METH_VARARGS, NULL},
+	 { "PQEncoder16_code_set", _wrap_PQEncoder16_code_set, METH_VARARGS, NULL},
+	 { "PQEncoder16_code_get", _wrap_PQEncoder16_code_get, METH_O, NULL},
+	 { "new_PQEncoder16", _wrap_new_PQEncoder16, METH_VARARGS, NULL},
+	 { "PQEncoder16_encode", _wrap_PQEncoder16_encode, METH_VARARGS, NULL},
+	 { "delete_PQEncoder16", _wrap_delete_PQEncoder16, METH_O, NULL},
+	 { "PQEncoder16_swigregister", PQEncoder16_swigregister, METH_O, NULL},
+	 { "PQEncoder16_swiginit", PQEncoder16_swiginit, METH_VARARGS, NULL},
+	 { "PQDecoderGeneric_code_set", _wrap_PQDecoderGeneric_code_set, METH_VARARGS, NULL},
+	 { "PQDecoderGeneric_code_get", _wrap_PQDecoderGeneric_code_get, METH_O, NULL},
+	 { "PQDecoderGeneric_offset_set", _wrap_PQDecoderGeneric_offset_set, METH_VARARGS, NULL},
+	 { "PQDecoderGeneric_offset_get", _wrap_PQDecoderGeneric_offset_get, METH_O, NULL},
+	 { "PQDecoderGeneric_nbits_get", _wrap_PQDecoderGeneric_nbits_get, METH_O, NULL},
+	 { "PQDecoderGeneric_mask_get", _wrap_PQDecoderGeneric_mask_get, METH_O, NULL},
+	 { "PQDecoderGeneric_reg_set", _wrap_PQDecoderGeneric_reg_set, METH_VARARGS, NULL},
+	 { "PQDecoderGeneric_reg_get", _wrap_PQDecoderGeneric_reg_get, METH_O, NULL},
+	 { "new_PQDecoderGeneric", _wrap_new_PQDecoderGeneric, METH_VARARGS, NULL},
+	 { "PQDecoderGeneric_decode", _wrap_PQDecoderGeneric_decode, METH_O, NULL},
+	 { "delete_PQDecoderGeneric", _wrap_delete_PQDecoderGeneric, METH_O, NULL},
+	 { "PQDecoderGeneric_swigregister", PQDecoderGeneric_swigregister, METH_O, NULL},
+	 { "PQDecoderGeneric_swiginit", PQDecoderGeneric_swiginit, METH_VARARGS, NULL},
+	 { "PQDecoder8_code_set", _wrap_PQDecoder8_code_set, METH_VARARGS, NULL},
+	 { "PQDecoder8_code_get", _wrap_PQDecoder8_code_get, METH_O, NULL},
+	 { "new_PQDecoder8", _wrap_new_PQDecoder8, METH_VARARGS, NULL},
+	 { "PQDecoder8_decode", _wrap_PQDecoder8_decode, METH_O, NULL},
+	 { "delete_PQDecoder8", _wrap_delete_PQDecoder8, METH_O, NULL},
+	 { "PQDecoder8_swigregister", PQDecoder8_swigregister, METH_O, NULL},
+	 { "PQDecoder8_swiginit", PQDecoder8_swiginit, METH_VARARGS, NULL},
+	 { "PQDecoder16_code_set", _wrap_PQDecoder16_code_set, METH_VARARGS, NULL},
+	 { "PQDecoder16_code_get", _wrap_PQDecoder16_code_get, METH_O, NULL},
+	 { "new_PQDecoder16", _wrap_new_PQDecoder16, METH_VARARGS, NULL},
+	 { "PQDecoder16_decode", _wrap_PQDecoder16_decode, METH_O, NULL},
+	 { "delete_PQDecoder16", _wrap_delete_PQDecoder16, METH_O, NULL},
+	 { "PQDecoder16_swigregister", PQDecoder16_swigregister, METH_O, NULL},
+	 { "PQDecoder16_swiginit", PQDecoder16_swiginit, METH_VARARGS, NULL},
+	 { "AdditiveQuantizer_d_set", _wrap_AdditiveQuantizer_d_set, METH_VARARGS, " size of the input vectors"},
+	 { "AdditiveQuantizer_d_get", _wrap_AdditiveQuantizer_d_get, METH_O, " size of the input vectors"},
+	 { "AdditiveQuantizer_M_set", _wrap_AdditiveQuantizer_M_set, METH_VARARGS, " number of codebooks"},
+	 { "AdditiveQuantizer_M_get", _wrap_AdditiveQuantizer_M_get, METH_O, " number of codebooks"},
+	 { "AdditiveQuantizer_nbits_set", _wrap_AdditiveQuantizer_nbits_set, METH_VARARGS, " bits for each step"},
+	 { "AdditiveQuantizer_nbits_get", _wrap_AdditiveQuantizer_nbits_get, METH_O, " bits for each step"},
+	 { "AdditiveQuantizer_codebooks_set", _wrap_AdditiveQuantizer_codebooks_set, METH_VARARGS, " codebooks"},
+	 { "AdditiveQuantizer_codebooks_get", _wrap_AdditiveQuantizer_codebooks_get, METH_O, " codebooks"},
+	 { "AdditiveQuantizer_codebook_offsets_set", _wrap_AdditiveQuantizer_codebook_offsets_set, METH_VARARGS, NULL},
+	 { "AdditiveQuantizer_codebook_offsets_get", _wrap_AdditiveQuantizer_codebook_offsets_get, METH_O, NULL},
+	 { "AdditiveQuantizer_code_size_set", _wrap_AdditiveQuantizer_code_size_set, METH_VARARGS, " code size in bytes"},
+	 { "AdditiveQuantizer_code_size_get", _wrap_AdditiveQuantizer_code_size_get, METH_O, " code size in bytes"},
+	 { "AdditiveQuantizer_tot_bits_set", _wrap_AdditiveQuantizer_tot_bits_set, METH_VARARGS, " total number of bits"},
+	 { "AdditiveQuantizer_tot_bits_get", _wrap_AdditiveQuantizer_tot_bits_get, METH_O, " total number of bits"},
+	 { "AdditiveQuantizer_total_codebook_size_set", _wrap_AdditiveQuantizer_total_codebook_size_set, METH_VARARGS, " size of the codebook in vectors"},
+	 { "AdditiveQuantizer_total_codebook_size_get", _wrap_AdditiveQuantizer_total_codebook_size_get, METH_O, " size of the codebook in vectors"},
+	 { "AdditiveQuantizer_only_8bit_set", _wrap_AdditiveQuantizer_only_8bit_set, METH_VARARGS, " are all nbits = 8 (use faster decoder)"},
+	 { "AdditiveQuantizer_only_8bit_get", _wrap_AdditiveQuantizer_only_8bit_get, METH_O, " are all nbits = 8 (use faster decoder)"},
+	 { "AdditiveQuantizer_verbose_set", _wrap_AdditiveQuantizer_verbose_set, METH_VARARGS, " verbose during training?"},
+	 { "AdditiveQuantizer_verbose_get", _wrap_AdditiveQuantizer_verbose_get, METH_O, " verbose during training?"},
+	 { "AdditiveQuantizer_is_trained_set", _wrap_AdditiveQuantizer_is_trained_set, METH_VARARGS, " is trained or not"},
+	 { "AdditiveQuantizer_is_trained_get", _wrap_AdditiveQuantizer_is_trained_get, METH_O, " is trained or not"},
+	 { "AdditiveQuantizer_qnorm_set", _wrap_AdditiveQuantizer_qnorm_set, METH_VARARGS, " store and search norms"},
+	 { "AdditiveQuantizer_qnorm_get", _wrap_AdditiveQuantizer_qnorm_get, METH_O, " store and search norms"},
+	 { "AdditiveQuantizer_encode_qcint", _wrap_AdditiveQuantizer_encode_qcint, METH_VARARGS, " encode norm by non-uniform scalar quantization"},
+	 { "AdditiveQuantizer_decode_qcint", _wrap_AdditiveQuantizer_decode_qcint, METH_VARARGS, " decode norm by non-uniform scalar quantization"},
+	 { "AdditiveQuantizer_set_derived_values", _wrap_AdditiveQuantizer_set_derived_values, METH_O, " Train the additive quantizer"},
+	 { "AdditiveQuantizer_train", _wrap_AdditiveQuantizer_train, METH_VARARGS, NULL},
+	 { "AdditiveQuantizer_compute_codes", _wrap_AdditiveQuantizer_compute_codes, METH_VARARGS, "\n"
+		" Encode a set of vectors\n"
+		"\n"
+		":type x: float\n"
+		":param x:      vectors to encode, size n * d\n"
+		":type codes: uint8_t\n"
+		":param codes:  output codes, size n * code_size\n"
+		""},
+	 { "AdditiveQuantizer_pack_codes", _wrap_AdditiveQuantizer_pack_codes, METH_VARARGS, "\n"
+		" pack a series of code to bit-compact format\n"
+		"\n"
+		":type codes: int\n"
+		":param codes:        codes to be packed, size n * code_size\n"
+		":type packed_codes: uint8_t\n"
+		":param packed_codes: output bit-compact codes\n"
+		":type ld_codes: int, optional\n"
+		":param ld_codes:     leading dimension of codes\n"
+		":type norms: float, optional\n"
+		":param norms:        norms of the vectors (size n). Will be computed if\n"
+		"                        needed but not provided\n"
+		""},
+	 { "AdditiveQuantizer_decode", _wrap_AdditiveQuantizer_decode, METH_VARARGS, "\n"
+		" Decode a set of vectors\n"
+		"\n"
+		":type codes: uint8_t\n"
+		":param codes:  codes to decode, size n * code_size\n"
+		":type x: float\n"
+		":param x:      output vectors, size n * d\n"
+		""},
+	 { "AdditiveQuantizer_decode_unpacked", _wrap_AdditiveQuantizer_decode_unpacked, METH_VARARGS, "\n"
+		" Decode a set of vectors in non-packed format\n"
+		"\n"
+		":type codes: int\n"
+		":param codes:  codes to decode, size n * ld_codes\n"
+		":type x: float\n"
+		":param x:      output vectors, size n * d\n"
+		""},
+	 { "AdditiveQuantizer_search_type_set", _wrap_AdditiveQuantizer_search_type_set, METH_VARARGS, " Also determines what's in the codes"},
+	 { "AdditiveQuantizer_search_type_get", _wrap_AdditiveQuantizer_search_type_get, METH_O, " Also determines what's in the codes"},
+	 { "AdditiveQuantizer_norm_min_set", _wrap_AdditiveQuantizer_norm_min_set, METH_VARARGS, " min/max for quantization of norms"},
+	 { "AdditiveQuantizer_norm_min_get", _wrap_AdditiveQuantizer_norm_min_get, METH_O, " min/max for quantization of norms"},
+	 { "AdditiveQuantizer_norm_max_set", _wrap_AdditiveQuantizer_norm_max_set, METH_VARARGS, NULL},
+	 { "AdditiveQuantizer_norm_max_get", _wrap_AdditiveQuantizer_norm_max_get, METH_O, NULL},
+	 { "AdditiveQuantizer_decode_64bit", _wrap_AdditiveQuantizer_decode_64bit, METH_VARARGS, " decoding function for a code in a 64-bit word"},
+	 { "AdditiveQuantizer_compute_LUT", _wrap_AdditiveQuantizer_compute_LUT, METH_VARARGS, "\n"
+		" Compute inner-product look-up tables. Used in the centroid search\n"
+		"functions.\n"
+		"\n"
+		":type xq: float\n"
+		":param xq:     query vector, size (n, d)\n"
+		":type LUT: float\n"
+		":param LUT:    look-up table, size (n, total_codebook_size)\n"
+		""},
+	 { "AdditiveQuantizer_knn_centroids_inner_product", _wrap_AdditiveQuantizer_knn_centroids_inner_product, METH_VARARGS, " exact IP search"},
+	 { "AdditiveQuantizer_compute_centroid_norms", _wrap_AdditiveQuantizer_compute_centroid_norms, METH_VARARGS, "\n"
+		" For L2 search we need the L2 norms of the centroids\n"
+		"\n"
+		":type norms: float\n"
+		":param norms:    output norms table, size total_codebook_size\n"
+		""},
+	 { "AdditiveQuantizer_knn_centroids_L2", _wrap_AdditiveQuantizer_knn_centroids_L2, METH_VARARGS, " Exact L2 search, with precomputed norms"},
+	 { "delete_AdditiveQuantizer", _wrap_delete_AdditiveQuantizer, METH_O, NULL},
+	 { "AdditiveQuantizer_swigregister", AdditiveQuantizer_swigregister, METH_O, NULL},
+	 { "ResidualQuantizer_train_type_set", _wrap_ResidualQuantizer_train_type_set, METH_VARARGS, NULL},
+	 { "ResidualQuantizer_train_type_get", _wrap_ResidualQuantizer_train_type_get, METH_O, NULL},
+	 { "ResidualQuantizer_max_beam_size_set", _wrap_ResidualQuantizer_max_beam_size_set, METH_VARARGS, " beam size used for training and for encoding"},
+	 { "ResidualQuantizer_max_beam_size_get", _wrap_ResidualQuantizer_max_beam_size_get, METH_O, " beam size used for training and for encoding"},
+	 { "ResidualQuantizer_use_beam_LUT_set", _wrap_ResidualQuantizer_use_beam_LUT_set, METH_VARARGS, " use LUT for beam search"},
+	 { "ResidualQuantizer_use_beam_LUT_get", _wrap_ResidualQuantizer_use_beam_LUT_get, METH_O, " use LUT for beam search"},
+	 { "ResidualQuantizer_max_mem_distances_set", _wrap_ResidualQuantizer_max_mem_distances_set, METH_VARARGS, "\n"
+		"distance matrixes with beam search can get large, so use this\n"
+		"to batch computations at encoding time.\n"
+		""},
+	 { "ResidualQuantizer_max_mem_distances_get", _wrap_ResidualQuantizer_max_mem_distances_get, METH_O, "\n"
+		"distance matrixes with beam search can get large, so use this\n"
+		"to batch computations at encoding time.\n"
+		""},
+	 { "ResidualQuantizer_cp_set", _wrap_ResidualQuantizer_cp_set, METH_VARARGS, " clustering parameters"},
+	 { "ResidualQuantizer_cp_get", _wrap_ResidualQuantizer_cp_get, METH_O, " clustering parameters"},
+	 { "ResidualQuantizer_assign_index_factory_set", _wrap_ResidualQuantizer_assign_index_factory_set, METH_VARARGS, " if non-NULL, use this index for assignment"},
+	 { "ResidualQuantizer_assign_index_factory_get", _wrap_ResidualQuantizer_assign_index_factory_get, METH_O, " if non-NULL, use this index for assignment"},
+	 { "new_ResidualQuantizer", _wrap_new_ResidualQuantizer, METH_VARARGS, NULL},
+	 { "ResidualQuantizer_train", _wrap_ResidualQuantizer_train, METH_VARARGS, NULL},
+	 { "ResidualQuantizer_compute_codes", _wrap_ResidualQuantizer_compute_codes, METH_VARARGS, "\n"
+		" Encode a set of vectors\n"
+		"\n"
+		":type x: float\n"
+		":param x:      vectors to encode, size n * d\n"
+		":type codes: uint8_t\n"
+		":param codes:  output codes, size n * code_size\n"
+		""},
+	 { "ResidualQuantizer_refine_beam", _wrap_ResidualQuantizer_refine_beam, METH_VARARGS, "\n"
+		" lower-level encode function\n"
+		"\n"
+		":type n: int\n"
+		":param n:              number of vectors to hanlde\n"
+		":type residuals: float\n"
+		":param residuals:      vectors to encode, size (n, beam_size, d)\n"
+		":type beam_size: int\n"
+		":param beam_size:      input beam size\n"
+		":type new_beam_size: int\n"
+		":param new_beam_size:  output beam size (should be <= K * beam_size)\n"
+		":type new_codes: int\n"
+		":param new_codes:      output codes, size (n, new_beam_size, m + 1)\n"
+		":type new_residuals: float, optional\n"
+		":param new_residuals:  output residuals, size (n, new_beam_size, d)\n"
+		":type new_distances: float, optional\n"
+		":param new_distances:  output distances, size (n, new_beam_size)\n"
+		""},
+	 { "ResidualQuantizer_refine_beam_LUT", _wrap_ResidualQuantizer_refine_beam_LUT, METH_VARARGS, NULL},
+	 { "ResidualQuantizer_memory_per_point", _wrap_ResidualQuantizer_memory_per_point, METH_VARARGS, "\n"
+		" Beam search can consume a lot of memory. This function estimates the\n"
+		"amount of mem used by refine_beam to adjust the batch size\n"
+		"\n"
+		":type beam_size: int, optional\n"
+		":param beam_size:  if != -1, override the beam size\n"
+		""},
+	 { "ResidualQuantizer_compute_codebook_tables", _wrap_ResidualQuantizer_compute_codebook_tables, METH_O, "\n"
+		" Cross products used in codebook tables\n"
+		"\n"
+		"These are used to keep trak of norms of centroids.\n"
+		""},
+	 { "ResidualQuantizer_codebook_cross_products_set", _wrap_ResidualQuantizer_codebook_cross_products_set, METH_VARARGS, "\n"
+		"dot products of all codebook vectors with each other\n"
+		"size total_codebook_size * total_codebook_size\n"
+		""},
+	 { "ResidualQuantizer_codebook_cross_products_get", _wrap_ResidualQuantizer_codebook_cross_products_get, METH_O, "\n"
+		"dot products of all codebook vectors with each other\n"
+		"size total_codebook_size * total_codebook_size\n"
+		""},
+	 { "ResidualQuantizer_cent_norms_set", _wrap_ResidualQuantizer_cent_norms_set, METH_VARARGS, " norms of all vectors"},
+	 { "ResidualQuantizer_cent_norms_get", _wrap_ResidualQuantizer_cent_norms_get, METH_O, " norms of all vectors"},
+	 { "delete_ResidualQuantizer", _wrap_delete_ResidualQuantizer, METH_O, NULL},
+	 { "ResidualQuantizer_swigregister", ResidualQuantizer_swigregister, METH_O, NULL},
+	 { "ResidualQuantizer_swiginit", ResidualQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "beam_search_encode_step", _wrap_beam_search_encode_step, METH_VARARGS, "\n"
+		" Encode a residual by sampling from a centroid table.\n"
+		"\n"
+		"This is a single encoding step the residual quantizer.\n"
+		"It allows low-level access to the encoding function, exposed mainly for unit\n"
+		"tests.\n"
+		"\n"
+		":type n: int\n"
+		":param n:              number of vectors to hanlde\n"
+		":type residuals: float\n"
+		":param residuals:      vectors to encode, size (n, beam_size, d)\n"
+		":type cent: float\n"
+		":param cent:           centroids, size (K, d)\n"
+		":type beam_size: int\n"
+		":param beam_size:      input beam size\n"
+		":type m: int\n"
+		":param m:              size of the codes for the previous encoding steps\n"
+		":type codes: int\n"
+		":param codes:          code array for the previous steps of the beam (n,\n"
+		"    beam_size, m)\n"
+		":type new_beam_size: int\n"
+		":param new_beam_size:  output beam size (should be <= K * beam_size)\n"
+		":type new_codes: int\n"
+		":param new_codes:      output codes, size (n, new_beam_size, m + 1)\n"
+		":type new_residuals: float\n"
+		":param new_residuals:  output residuals, size (n, new_beam_size, d)\n"
+		":type new_distances: float\n"
+		":param new_distances:  output distances, size (n, new_beam_size)\n"
+		":type assign_index: :py:class:`Index`, optional\n"
+		":param assign_index:   if non-NULL, will be used to perform assignment\n"
+		""},
+	 { "beam_search_encode_step_tab", _wrap_beam_search_encode_step_tab, METH_VARARGS, " Encode a set of vectors using their dot products with the codebooks"},
+	 { "LocalSearchQuantizer_K_set", _wrap_LocalSearchQuantizer_K_set, METH_VARARGS, " number of codes per codebook"},
+	 { "LocalSearchQuantizer_K_get", _wrap_LocalSearchQuantizer_K_get, METH_O, " number of codes per codebook"},
+	 { "LocalSearchQuantizer_train_iters_set", _wrap_LocalSearchQuantizer_train_iters_set, METH_VARARGS, " number of iterations in training"},
+	 { "LocalSearchQuantizer_train_iters_get", _wrap_LocalSearchQuantizer_train_iters_get, METH_O, " number of iterations in training"},
+	 { "LocalSearchQuantizer_encode_ils_iters_set", _wrap_LocalSearchQuantizer_encode_ils_iters_set, METH_VARARGS, " iterations of local search in encoding"},
+	 { "LocalSearchQuantizer_encode_ils_iters_get", _wrap_LocalSearchQuantizer_encode_ils_iters_get, METH_O, " iterations of local search in encoding"},
+	 { "LocalSearchQuantizer_train_ils_iters_set", _wrap_LocalSearchQuantizer_train_ils_iters_set, METH_VARARGS, " iterations of local search in training"},
+	 { "LocalSearchQuantizer_train_ils_iters_get", _wrap_LocalSearchQuantizer_train_ils_iters_get, METH_O, " iterations of local search in training"},
+	 { "LocalSearchQuantizer_icm_iters_set", _wrap_LocalSearchQuantizer_icm_iters_set, METH_VARARGS, " number of iterations in icm"},
+	 { "LocalSearchQuantizer_icm_iters_get", _wrap_LocalSearchQuantizer_icm_iters_get, METH_O, " number of iterations in icm"},
+	 { "LocalSearchQuantizer_p_set", _wrap_LocalSearchQuantizer_p_set, METH_VARARGS, " temperature factor"},
+	 { "LocalSearchQuantizer_p_get", _wrap_LocalSearchQuantizer_p_get, METH_O, " temperature factor"},
+	 { "LocalSearchQuantizer_lambd_set", _wrap_LocalSearchQuantizer_lambd_set, METH_VARARGS, " regularization factor"},
+	 { "LocalSearchQuantizer_lambd_get", _wrap_LocalSearchQuantizer_lambd_get, METH_O, " regularization factor"},
+	 { "LocalSearchQuantizer_chunk_size_set", _wrap_LocalSearchQuantizer_chunk_size_set, METH_VARARGS, " nb of vectors to encode at a time"},
+	 { "LocalSearchQuantizer_chunk_size_get", _wrap_LocalSearchQuantizer_chunk_size_get, METH_O, " nb of vectors to encode at a time"},
+	 { "LocalSearchQuantizer_random_seed_set", _wrap_LocalSearchQuantizer_random_seed_set, METH_VARARGS, " seed for random generator"},
+	 { "LocalSearchQuantizer_random_seed_get", _wrap_LocalSearchQuantizer_random_seed_get, METH_O, " seed for random generator"},
+	 { "LocalSearchQuantizer_nperts_set", _wrap_LocalSearchQuantizer_nperts_set, METH_VARARGS, "\n"
+		"number of perturbation in each code\n"
+		"if non-NULL, use this encoder to encode\n"
+		""},
+	 { "LocalSearchQuantizer_nperts_get", _wrap_LocalSearchQuantizer_nperts_get, METH_O, "\n"
+		"number of perturbation in each code\n"
+		"if non-NULL, use this encoder to encode\n"
+		""},
+	 { "LocalSearchQuantizer_icm_encoder_factory_set", _wrap_LocalSearchQuantizer_icm_encoder_factory_set, METH_VARARGS, NULL},
+	 { "LocalSearchQuantizer_icm_encoder_factory_get", _wrap_LocalSearchQuantizer_icm_encoder_factory_get, METH_O, NULL},
+	 { "LocalSearchQuantizer_update_codebooks_with_double_set", _wrap_LocalSearchQuantizer_update_codebooks_with_double_set, METH_VARARGS, NULL},
+	 { "LocalSearchQuantizer_update_codebooks_with_double_get", _wrap_LocalSearchQuantizer_update_codebooks_with_double_get, METH_O, NULL},
+	 { "new_LocalSearchQuantizer", _wrap_new_LocalSearchQuantizer, METH_VARARGS, NULL},
+	 { "delete_LocalSearchQuantizer", _wrap_delete_LocalSearchQuantizer, METH_O, NULL},
+	 { "LocalSearchQuantizer_train", _wrap_LocalSearchQuantizer_train, METH_VARARGS, NULL},
+	 { "LocalSearchQuantizer_compute_codes", _wrap_LocalSearchQuantizer_compute_codes, METH_VARARGS, "\n"
+		" Encode a set of vectors\n"
+		"\n"
+		":type x: float\n"
+		":param x:      vectors to encode, size n * d\n"
+		":type codes: uint8_t\n"
+		":param codes:  output codes, size n * code_size\n"
+		":type n: int\n"
+		":param n:      number of vectors\n"
+		""},
+	 { "LocalSearchQuantizer_update_codebooks", _wrap_LocalSearchQuantizer_update_codebooks, METH_VARARGS, "\n"
+		" Update codebooks given encodings\n"
+		"\n"
+		":type x: float\n"
+		":param x:      training vectors, size n * d\n"
+		":type codes: int\n"
+		":param codes:  encoded training vectors, size n * M\n"
+		":type n: int\n"
+		":param n:      number of vectors\n"
+		""},
+	 { "LocalSearchQuantizer_icm_encode", _wrap_LocalSearchQuantizer_icm_encode, METH_VARARGS, "\n"
+		" Encode vectors given codebooks using iterative conditional mode (icm).\n"
+		"\n"
+		":type codes: int\n"
+		":param codes:     output codes, size n * M\n"
+		":type x: float\n"
+		":param x:         vectors to encode, size n * d\n"
+		":type n: int\n"
+		":param n:         number of vectors\n"
+		":type ils_iters: int\n"
+		":param ils_iters: number of iterations of iterative local search\n"
+		""},
+	 { "LocalSearchQuantizer_icm_encode_impl", _wrap_LocalSearchQuantizer_icm_encode_impl, METH_VARARGS, NULL},
+	 { "LocalSearchQuantizer_icm_encode_step", _wrap_LocalSearchQuantizer_icm_encode_step, METH_VARARGS, NULL},
+	 { "LocalSearchQuantizer_perturb_codes", _wrap_LocalSearchQuantizer_perturb_codes, METH_VARARGS, "\n"
+		" Add some perturbation to codes\n"
+		"\n"
+		":type codes: int\n"
+		":param codes: codes to be perturbed, size n * M\n"
+		":type n: int\n"
+		":param n:     number of vectors\n"
+		""},
+	 { "LocalSearchQuantizer_perturb_codebooks", _wrap_LocalSearchQuantizer_perturb_codebooks, METH_VARARGS, "\n"
+		" Add some perturbation to codebooks\n"
+		"\n"
+		":type T: float\n"
+		":param T:         temperature of simulated annealing\n"
+		":type stddev: std::vector< float >\n"
+		":param stddev:    standard derivations of each dimension in training data\n"
+		""},
+	 { "LocalSearchQuantizer_compute_binary_terms", _wrap_LocalSearchQuantizer_compute_binary_terms, METH_VARARGS, "\n"
+		" Compute binary terms\n"
+		"\n"
+		":type binaries: float\n"
+		":param binaries: binary terms, size M * M * K * K\n"
+		""},
+	 { "LocalSearchQuantizer_compute_unary_terms", _wrap_LocalSearchQuantizer_compute_unary_terms, METH_VARARGS, "\n"
+		" Compute unary terms\n"
+		"\n"
+		":type n: int\n"
+		":param n:       number of vectors\n"
+		":type x: float\n"
+		":param x:       vectors to encode, size n * d\n"
+		":type unaries: float\n"
+		":param unaries: unary terms, size n * M * K\n"
+		""},
+	 { "LocalSearchQuantizer_evaluate", _wrap_LocalSearchQuantizer_evaluate, METH_VARARGS, "\n"
+		" Helper function to compute reconstruction error\n"
+		"\n"
+		":type codes: int\n"
+		":param codes: encoded codes, size n * M\n"
+		":type x: float\n"
+		":param x:     vectors to encode, size n * d\n"
+		":type n: int\n"
+		":param n:     number of vectors\n"
+		":type objs: float, optional\n"
+		":param objs:  if it is not null, store reconstruction\n"
+		"                        error of each vector into it, size n\n"
+		""},
+	 { "LocalSearchQuantizer_swigregister", LocalSearchQuantizer_swigregister, METH_O, NULL},
+	 { "LocalSearchQuantizer_swiginit", LocalSearchQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "IcmEncoder_binaries_set", _wrap_IcmEncoder_binaries_set, METH_VARARGS, NULL},
+	 { "IcmEncoder_binaries_get", _wrap_IcmEncoder_binaries_get, METH_O, NULL},
+	 { "IcmEncoder_verbose_set", _wrap_IcmEncoder_verbose_set, METH_VARARGS, NULL},
+	 { "IcmEncoder_verbose_get", _wrap_IcmEncoder_verbose_get, METH_O, NULL},
+	 { "IcmEncoder_lsq_set", _wrap_IcmEncoder_lsq_set, METH_VARARGS, NULL},
+	 { "IcmEncoder_lsq_get", _wrap_IcmEncoder_lsq_get, METH_O, NULL},
+	 { "new_IcmEncoder", _wrap_new_IcmEncoder, METH_O, NULL},
+	 { "delete_IcmEncoder", _wrap_delete_IcmEncoder, METH_O, " compute binary terms"},
+	 { "IcmEncoder_set_binary_term", _wrap_IcmEncoder_set_binary_term, METH_O, NULL},
+	 { "IcmEncoder_encode", _wrap_IcmEncoder_encode, METH_VARARGS, "\n"
+		" Encode vectors given codebooks\n"
+		"\n"
+		":type codes: int\n"
+		":param codes:     output codes, size n * M\n"
+		":type x: float\n"
+		":param x:         vectors to encode, size n * d\n"
+		":type gen: std::mt19937\n"
+		":param gen:       random generator\n"
+		":type n: int\n"
+		":param n:         number of vectors\n"
+		":type ils_iters: int\n"
+		":param ils_iters: number of iterations of iterative local search\n"
+		""},
+	 { "IcmEncoder_swigregister", IcmEncoder_swigregister, METH_O, NULL},
+	 { "IcmEncoder_swiginit", IcmEncoder_swiginit, METH_VARARGS, NULL},
+	 { "IcmEncoderFactory_get", _wrap_IcmEncoderFactory_get, METH_VARARGS, NULL},
+	 { "delete_IcmEncoderFactory", _wrap_delete_IcmEncoderFactory, METH_O, NULL},
+	 { "new_IcmEncoderFactory", _wrap_new_IcmEncoderFactory, METH_NOARGS, NULL},
+	 { "IcmEncoderFactory_swigregister", IcmEncoderFactory_swigregister, METH_O, NULL},
+	 { "IcmEncoderFactory_swiginit", IcmEncoderFactory_swiginit, METH_VARARGS, NULL},
+	 { "LSQTimer_t_set", _wrap_LSQTimer_t_set, METH_VARARGS, NULL},
+	 { "LSQTimer_t_get", _wrap_LSQTimer_t_get, METH_O, NULL},
+	 { "new_LSQTimer", _wrap_new_LSQTimer, METH_NOARGS, NULL},
+	 { "LSQTimer_get", _wrap_LSQTimer_get, METH_VARARGS, NULL},
+	 { "LSQTimer_add", _wrap_LSQTimer_add, METH_VARARGS, NULL},
+	 { "LSQTimer_reset", _wrap_LSQTimer_reset, METH_O, NULL},
+	 { "delete_LSQTimer", _wrap_delete_LSQTimer, METH_O, NULL},
+	 { "LSQTimer_swigregister", LSQTimer_swigregister, METH_O, NULL},
+	 { "LSQTimer_swiginit", LSQTimer_swiginit, METH_VARARGS, NULL},
+	 { "LSQTimerScope_t0_set", _wrap_LSQTimerScope_t0_set, METH_VARARGS, NULL},
+	 { "LSQTimerScope_t0_get", _wrap_LSQTimerScope_t0_get, METH_O, NULL},
+	 { "LSQTimerScope_timer_set", _wrap_LSQTimerScope_timer_set, METH_VARARGS, NULL},
+	 { "LSQTimerScope_timer_get", _wrap_LSQTimerScope_timer_get, METH_O, NULL},
+	 { "LSQTimerScope_name_set", _wrap_LSQTimerScope_name_set, METH_VARARGS, NULL},
+	 { "LSQTimerScope_name_get", _wrap_LSQTimerScope_name_get, METH_O, NULL},
+	 { "LSQTimerScope_finished_set", _wrap_LSQTimerScope_finished_set, METH_VARARGS, NULL},
+	 { "LSQTimerScope_finished_get", _wrap_LSQTimerScope_finished_get, METH_O, NULL},
+	 { "new_LSQTimerScope", _wrap_new_LSQTimerScope, METH_VARARGS, NULL},
+	 { "LSQTimerScope_finish", _wrap_LSQTimerScope_finish, METH_O, NULL},
+	 { "delete_LSQTimerScope", _wrap_delete_LSQTimerScope, METH_O, NULL},
+	 { "LSQTimerScope_swigregister", LSQTimerScope_swigregister, METH_O, NULL},
+	 { "LSQTimerScope_swiginit", LSQTimerScope_swiginit, METH_VARARGS, NULL},
+	 { "VectorTransform_d_in_set", _wrap_VectorTransform_d_in_set, METH_VARARGS, NULL},
+	 { "VectorTransform_d_in_get", _wrap_VectorTransform_d_in_get, METH_O, NULL},
+	 { "VectorTransform_d_out_set", _wrap_VectorTransform_d_out_set, METH_VARARGS, "input dimension"},
+	 { "VectorTransform_d_out_get", _wrap_VectorTransform_d_out_get, METH_O, "input dimension"},
+	 { "VectorTransform_is_trained_set", _wrap_VectorTransform_is_trained_set, METH_VARARGS, "\n"
+		"set if the VectorTransform does not require training, or if\n"
+		"training is done already\n"
+		""},
+	 { "VectorTransform_is_trained_get", _wrap_VectorTransform_is_trained_get, METH_O, "\n"
+		"set if the VectorTransform does not require training, or if\n"
+		"training is done already\n"
+		""},
+	 { "VectorTransform_train", _wrap_VectorTransform_train, METH_VARARGS, "\n"
+		" Perform training on a representative set of vectors. Does\n"
+		"nothing by default.\n"
+		"\n"
+		":type n: int\n"
+		":param n:      nb of training vectors\n"
+		":type x: float\n"
+		":param x:      training vecors, size n * d\n"
+		""},
+	 { "VectorTransform_apply", _wrap_VectorTransform_apply, METH_VARARGS, "\n"
+		" apply the random rotation, return new allocated matrix\n"
+		":type x: float\n"
+		":param x: size n * d_in\n"
+		":rtype: float\n"
+		":return: size n * d_out\n"
+		""},
+	 { "VectorTransform_apply_noalloc", _wrap_VectorTransform_apply_noalloc, METH_VARARGS, " same as apply, but result is pre-allocated"},
+	 { "VectorTransform_reverse_transform", _wrap_VectorTransform_reverse_transform, METH_VARARGS, "\n"
+		"reverse transformation. May not be implemented or may return\n"
+		"approximate result\n"
+		""},
+	 { "delete_VectorTransform", _wrap_delete_VectorTransform, METH_O, NULL},
+	 { "VectorTransform_swigregister", VectorTransform_swigregister, METH_O, NULL},
+	 { "LinearTransform_have_bias_set", _wrap_LinearTransform_have_bias_set, METH_VARARGS, NULL},
+	 { "LinearTransform_have_bias_get", _wrap_LinearTransform_have_bias_get, METH_O, NULL},
+	 { "LinearTransform_is_orthonormal_set", _wrap_LinearTransform_is_orthonormal_set, METH_VARARGS, "\n"
+		"whether to use the bias term\n"
+		" check if matrix A is orthonormal (enables reverse_transform)\n"
+		""},
+	 { "LinearTransform_is_orthonormal_get", _wrap_LinearTransform_is_orthonormal_get, METH_O, "\n"
+		"whether to use the bias term\n"
+		" check if matrix A is orthonormal (enables reverse_transform)\n"
+		""},
+	 { "LinearTransform_A_set", _wrap_LinearTransform_A_set, METH_VARARGS, " Transformation matrix, size d_out * d_in"},
+	 { "LinearTransform_A_get", _wrap_LinearTransform_A_get, METH_O, " Transformation matrix, size d_out * d_in"},
+	 { "LinearTransform_b_set", _wrap_LinearTransform_b_set, METH_VARARGS, " bias vector, size d_out"},
+	 { "LinearTransform_b_get", _wrap_LinearTransform_b_get, METH_O, " bias vector, size d_out"},
+	 { "new_LinearTransform", _wrap_new_LinearTransform, METH_VARARGS, " both d_in > d_out and d_out < d_in are supported"},
+	 { "LinearTransform_apply_noalloc", _wrap_LinearTransform_apply_noalloc, METH_VARARGS, " same as apply, but result is pre-allocated"},
+	 { "LinearTransform_transform_transpose", _wrap_LinearTransform_transform_transpose, METH_VARARGS, "\n"
+		"compute x = A^T * (x - b)\n"
+		"is reverse transform if A has orthonormal lines\n"
+		""},
+	 { "LinearTransform_reverse_transform", _wrap_LinearTransform_reverse_transform, METH_VARARGS, " works only if is_orthonormal"},
+	 { "LinearTransform_set_is_orthonormal", _wrap_LinearTransform_set_is_orthonormal, METH_O, " compute A^T * A to set the is_orthonormal flag"},
+	 { "LinearTransform_verbose_set", _wrap_LinearTransform_verbose_set, METH_VARARGS, NULL},
+	 { "LinearTransform_verbose_get", _wrap_LinearTransform_verbose_get, METH_O, NULL},
+	 { "LinearTransform_print_if_verbose", _wrap_LinearTransform_print_if_verbose, METH_VARARGS, NULL},
+	 { "delete_LinearTransform", _wrap_delete_LinearTransform, METH_O, NULL},
+	 { "LinearTransform_swigregister", LinearTransform_swigregister, METH_O, NULL},
+	 { "LinearTransform_swiginit", LinearTransform_swiginit, METH_VARARGS, NULL},
+	 { "RandomRotationMatrix_init", _wrap_RandomRotationMatrix_init, METH_VARARGS, " must be called before the transform is used"},
+	 { "RandomRotationMatrix_train", _wrap_RandomRotationMatrix_train, METH_VARARGS, NULL},
+	 { "new_RandomRotationMatrix", _wrap_new_RandomRotationMatrix, METH_VARARGS, " both d_in > d_out and d_out < d_in are supported"},
+	 { "delete_RandomRotationMatrix", _wrap_delete_RandomRotationMatrix, METH_O, NULL},
+	 { "RandomRotationMatrix_swigregister", RandomRotationMatrix_swigregister, METH_O, NULL},
+	 { "RandomRotationMatrix_swiginit", RandomRotationMatrix_swiginit, METH_VARARGS, NULL},
+	 { "PCAMatrix_eigen_power_set", _wrap_PCAMatrix_eigen_power_set, METH_VARARGS, "\n"
+		" after transformation the components are multiplied by\n"
+		"eigenvalues^eigen_power\n"
+		"\n"
+		"=0: no whitening\n"
+		"=-0.5: full whitening\n"
+		""},
+	 { "PCAMatrix_eigen_power_get", _wrap_PCAMatrix_eigen_power_get, METH_O, "\n"
+		" after transformation the components are multiplied by\n"
+		"eigenvalues^eigen_power\n"
+		"\n"
+		"=0: no whitening\n"
+		"=-0.5: full whitening\n"
+		""},
+	 { "PCAMatrix_epsilon_set", _wrap_PCAMatrix_epsilon_set, METH_VARARGS, " value added to eigenvalues to avoid division by 0 when whitening"},
+	 { "PCAMatrix_epsilon_get", _wrap_PCAMatrix_epsilon_get, METH_O, " value added to eigenvalues to avoid division by 0 when whitening"},
+	 { "PCAMatrix_random_rotation_set", _wrap_PCAMatrix_random_rotation_set, METH_VARARGS, " random rotation after PCA"},
+	 { "PCAMatrix_random_rotation_get", _wrap_PCAMatrix_random_rotation_get, METH_O, " random rotation after PCA"},
+	 { "PCAMatrix_max_points_per_d_set", _wrap_PCAMatrix_max_points_per_d_set, METH_VARARGS, " ratio between # training vectors and dimension"},
+	 { "PCAMatrix_max_points_per_d_get", _wrap_PCAMatrix_max_points_per_d_get, METH_O, " ratio between # training vectors and dimension"},
+	 { "PCAMatrix_balanced_bins_set", _wrap_PCAMatrix_balanced_bins_set, METH_VARARGS, " try to distribute output eigenvectors in this many bins"},
+	 { "PCAMatrix_balanced_bins_get", _wrap_PCAMatrix_balanced_bins_get, METH_O, " try to distribute output eigenvectors in this many bins"},
+	 { "PCAMatrix_mean_set", _wrap_PCAMatrix_mean_set, METH_VARARGS, " Mean, size d_in"},
+	 { "PCAMatrix_mean_get", _wrap_PCAMatrix_mean_get, METH_O, " Mean, size d_in"},
+	 { "PCAMatrix_eigenvalues_set", _wrap_PCAMatrix_eigenvalues_set, METH_VARARGS, " eigenvalues of covariance matrix (= squared singular values)"},
+	 { "PCAMatrix_eigenvalues_get", _wrap_PCAMatrix_eigenvalues_get, METH_O, " eigenvalues of covariance matrix (= squared singular values)"},
+	 { "PCAMatrix_PCAMat_set", _wrap_PCAMatrix_PCAMat_set, METH_VARARGS, " PCA matrix, size d_in * d_in"},
+	 { "PCAMatrix_PCAMat_get", _wrap_PCAMatrix_PCAMat_get, METH_O, " PCA matrix, size d_in * d_in"},
+	 { "new_PCAMatrix", _wrap_new_PCAMatrix, METH_VARARGS, NULL},
+	 { "PCAMatrix_train", _wrap_PCAMatrix_train, METH_VARARGS, "\n"
+		"train on n vectors. If n < d_in then the eigenvector matrix\n"
+		"will be completed with 0s\n"
+		""},
+	 { "PCAMatrix_copy_from", _wrap_PCAMatrix_copy_from, METH_VARARGS, " copy pre-trained PCA matrix"},
+	 { "PCAMatrix_prepare_Ab", _wrap_PCAMatrix_prepare_Ab, METH_O, " called after mean, PCAMat and eigenvalues are computed"},
+	 { "delete_PCAMatrix", _wrap_delete_PCAMatrix, METH_O, NULL},
+	 { "PCAMatrix_swigregister", PCAMatrix_swigregister, METH_O, NULL},
+	 { "PCAMatrix_swiginit", PCAMatrix_swiginit, METH_VARARGS, NULL},
+	 { "ITQMatrix_max_iter_set", _wrap_ITQMatrix_max_iter_set, METH_VARARGS, NULL},
+	 { "ITQMatrix_max_iter_get", _wrap_ITQMatrix_max_iter_get, METH_O, NULL},
+	 { "ITQMatrix_seed_set", _wrap_ITQMatrix_seed_set, METH_VARARGS, NULL},
+	 { "ITQMatrix_seed_get", _wrap_ITQMatrix_seed_get, METH_O, NULL},
+	 { "ITQMatrix_init_rotation_set", _wrap_ITQMatrix_init_rotation_set, METH_VARARGS, NULL},
+	 { "ITQMatrix_init_rotation_get", _wrap_ITQMatrix_init_rotation_get, METH_O, NULL},
+	 { "new_ITQMatrix", _wrap_new_ITQMatrix, METH_VARARGS, NULL},
+	 { "ITQMatrix_train", _wrap_ITQMatrix_train, METH_VARARGS, NULL},
+	 { "delete_ITQMatrix", _wrap_delete_ITQMatrix, METH_O, NULL},
+	 { "ITQMatrix_swigregister", ITQMatrix_swigregister, METH_O, NULL},
+	 { "ITQMatrix_swiginit", ITQMatrix_swiginit, METH_VARARGS, NULL},
+	 { "ITQTransform_mean_set", _wrap_ITQTransform_mean_set, METH_VARARGS, NULL},
+	 { "ITQTransform_mean_get", _wrap_ITQTransform_mean_get, METH_O, NULL},
+	 { "ITQTransform_do_pca_set", _wrap_ITQTransform_do_pca_set, METH_VARARGS, NULL},
+	 { "ITQTransform_do_pca_get", _wrap_ITQTransform_do_pca_get, METH_O, NULL},
+	 { "ITQTransform_itq_set", _wrap_ITQTransform_itq_set, METH_VARARGS, NULL},
+	 { "ITQTransform_itq_get", _wrap_ITQTransform_itq_get, METH_O, NULL},
+	 { "ITQTransform_max_train_per_dim_set", _wrap_ITQTransform_max_train_per_dim_set, METH_VARARGS, " max training points per dimension"},
+	 { "ITQTransform_max_train_per_dim_get", _wrap_ITQTransform_max_train_per_dim_get, METH_O, " max training points per dimension"},
+	 { "ITQTransform_pca_then_itq_set", _wrap_ITQTransform_pca_then_itq_set, METH_VARARGS, NULL},
+	 { "ITQTransform_pca_then_itq_get", _wrap_ITQTransform_pca_then_itq_get, METH_O, NULL},
+	 { "new_ITQTransform", _wrap_new_ITQTransform, METH_VARARGS, NULL},
+	 { "ITQTransform_train", _wrap_ITQTransform_train, METH_VARARGS, NULL},
+	 { "ITQTransform_apply_noalloc", _wrap_ITQTransform_apply_noalloc, METH_VARARGS, NULL},
+	 { "delete_ITQTransform", _wrap_delete_ITQTransform, METH_O, NULL},
+	 { "ITQTransform_swigregister", ITQTransform_swigregister, METH_O, NULL},
+	 { "ITQTransform_swiginit", ITQTransform_swiginit, METH_VARARGS, NULL},
+	 { "OPQMatrix_M_set", _wrap_OPQMatrix_M_set, METH_VARARGS, " nb of subquantizers"},
+	 { "OPQMatrix_M_get", _wrap_OPQMatrix_M_get, METH_O, " nb of subquantizers"},
+	 { "OPQMatrix_niter_set", _wrap_OPQMatrix_niter_set, METH_VARARGS, " Number of outer training iterations"},
+	 { "OPQMatrix_niter_get", _wrap_OPQMatrix_niter_get, METH_O, " Number of outer training iterations"},
+	 { "OPQMatrix_niter_pq_set", _wrap_OPQMatrix_niter_pq_set, METH_VARARGS, " Number of training iterations for the PQ"},
+	 { "OPQMatrix_niter_pq_get", _wrap_OPQMatrix_niter_pq_get, METH_O, " Number of training iterations for the PQ"},
+	 { "OPQMatrix_niter_pq_0_set", _wrap_OPQMatrix_niter_pq_0_set, METH_VARARGS, " same, for the first outer iteration"},
+	 { "OPQMatrix_niter_pq_0_get", _wrap_OPQMatrix_niter_pq_0_get, METH_O, " same, for the first outer iteration"},
+	 { "OPQMatrix_max_train_points_set", _wrap_OPQMatrix_max_train_points_set, METH_VARARGS, " if there are too many training points, resample"},
+	 { "OPQMatrix_max_train_points_get", _wrap_OPQMatrix_max_train_points_get, METH_O, " if there are too many training points, resample"},
+	 { "OPQMatrix_verbose_set", _wrap_OPQMatrix_verbose_set, METH_VARARGS, NULL},
+	 { "OPQMatrix_verbose_get", _wrap_OPQMatrix_verbose_get, METH_O, NULL},
+	 { "OPQMatrix_pq_set", _wrap_OPQMatrix_pq_set, METH_VARARGS, "\n"
+		"if non-NULL, use this product quantizer for training\n"
+		"should be constructed with (d_out, M, _)\n"
+		""},
+	 { "OPQMatrix_pq_get", _wrap_OPQMatrix_pq_get, METH_O, "\n"
+		"if non-NULL, use this product quantizer for training\n"
+		"should be constructed with (d_out, M, _)\n"
+		""},
+	 { "new_OPQMatrix", _wrap_new_OPQMatrix, METH_VARARGS, " if d2 != -1, output vectors of this dimension"},
+	 { "OPQMatrix_train", _wrap_OPQMatrix_train, METH_VARARGS, NULL},
+	 { "delete_OPQMatrix", _wrap_delete_OPQMatrix, METH_O, NULL},
+	 { "OPQMatrix_swigregister", OPQMatrix_swigregister, METH_O, NULL},
+	 { "OPQMatrix_swiginit", OPQMatrix_swiginit, METH_VARARGS, NULL},
+	 { "RemapDimensionsTransform_map_set", _wrap_RemapDimensionsTransform_map_set, METH_VARARGS, "\n"
+		"map from output dimension to input, size d_out\n"
+		"-1 -> set output to 0\n"
+		""},
+	 { "RemapDimensionsTransform_map_get", _wrap_RemapDimensionsTransform_map_get, METH_O, "\n"
+		"map from output dimension to input, size d_out\n"
+		"-1 -> set output to 0\n"
+		""},
+	 { "RemapDimensionsTransform_apply_noalloc", _wrap_RemapDimensionsTransform_apply_noalloc, METH_VARARGS, NULL},
+	 { "RemapDimensionsTransform_reverse_transform", _wrap_RemapDimensionsTransform_reverse_transform, METH_VARARGS, " reverse transform correct only when the mapping is a permutation"},
+	 { "new_RemapDimensionsTransform", _wrap_new_RemapDimensionsTransform, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"remap input to output, skipping or inserting dimensions as needed\n"
+		"if uniform: distribute dimensions uniformly\n"
+		"otherwise just take the d_out first ones.\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"remap input to output, skipping or inserting dimensions as needed\n"
+		"if uniform: distribute dimensions uniformly\n"
+		"otherwise just take the d_out first ones.\n"
+		""},
+	 { "delete_RemapDimensionsTransform", _wrap_delete_RemapDimensionsTransform, METH_O, NULL},
+	 { "RemapDimensionsTransform_swigregister", RemapDimensionsTransform_swigregister, METH_O, NULL},
+	 { "RemapDimensionsTransform_swiginit", RemapDimensionsTransform_swiginit, METH_VARARGS, NULL},
+	 { "NormalizationTransform_norm_set", _wrap_NormalizationTransform_norm_set, METH_VARARGS, NULL},
+	 { "NormalizationTransform_norm_get", _wrap_NormalizationTransform_norm_get, METH_O, NULL},
+	 { "new_NormalizationTransform", _wrap_new_NormalizationTransform, METH_VARARGS, NULL},
+	 { "NormalizationTransform_apply_noalloc", _wrap_NormalizationTransform_apply_noalloc, METH_VARARGS, NULL},
+	 { "NormalizationTransform_reverse_transform", _wrap_NormalizationTransform_reverse_transform, METH_VARARGS, " Identity transform since norm is not revertible"},
+	 { "delete_NormalizationTransform", _wrap_delete_NormalizationTransform, METH_O, NULL},
+	 { "NormalizationTransform_swigregister", NormalizationTransform_swigregister, METH_O, NULL},
+	 { "NormalizationTransform_swiginit", NormalizationTransform_swiginit, METH_VARARGS, NULL},
+	 { "CenteringTransform_mean_set", _wrap_CenteringTransform_mean_set, METH_VARARGS, " Mean, size d_in = d_out"},
+	 { "CenteringTransform_mean_get", _wrap_CenteringTransform_mean_get, METH_O, " Mean, size d_in = d_out"},
+	 { "new_CenteringTransform", _wrap_new_CenteringTransform, METH_VARARGS, NULL},
+	 { "CenteringTransform_train", _wrap_CenteringTransform_train, METH_VARARGS, " train on n vectors."},
+	 { "CenteringTransform_apply_noalloc", _wrap_CenteringTransform_apply_noalloc, METH_VARARGS, " subtract the mean"},
+	 { "CenteringTransform_reverse_transform", _wrap_CenteringTransform_reverse_transform, METH_VARARGS, " add the mean"},
+	 { "delete_CenteringTransform", _wrap_delete_CenteringTransform, METH_O, NULL},
+	 { "CenteringTransform_swigregister", CenteringTransform_swigregister, METH_O, NULL},
+	 { "CenteringTransform_swiginit", CenteringTransform_swiginit, METH_VARARGS, NULL},
+	 { "IndexPreTransform_chain_set", _wrap_IndexPreTransform_chain_set, METH_VARARGS, NULL},
+	 { "IndexPreTransform_chain_get", _wrap_IndexPreTransform_chain_get, METH_O, NULL},
+	 { "IndexPreTransform_index_set", _wrap_IndexPreTransform_index_set, METH_VARARGS, "chain of tranforms"},
+	 { "IndexPreTransform_index_get", _wrap_IndexPreTransform_index_get, METH_O, "chain of tranforms"},
+	 { "IndexPreTransform_own_fields_set", _wrap_IndexPreTransform_own_fields_set, METH_VARARGS, "the sub-index"},
+	 { "IndexPreTransform_own_fields_get", _wrap_IndexPreTransform_own_fields_get, METH_O, "the sub-index"},
+	 { "new_IndexPreTransform", _wrap_new_IndexPreTransform, METH_VARARGS, NULL},
+	 { "IndexPreTransform_prepend_transform", _wrap_IndexPreTransform_prepend_transform, METH_VARARGS, NULL},
+	 { "IndexPreTransform_train", _wrap_IndexPreTransform_train, METH_VARARGS, NULL},
+	 { "IndexPreTransform_add", _wrap_IndexPreTransform_add, METH_VARARGS, NULL},
+	 { "IndexPreTransform_add_with_ids", _wrap_IndexPreTransform_add_with_ids, METH_VARARGS, NULL},
+	 { "IndexPreTransform_reset", _wrap_IndexPreTransform_reset, METH_O, NULL},
+	 { "IndexPreTransform_remove_ids", _wrap_IndexPreTransform_remove_ids, METH_VARARGS, " removes IDs from the index. Not supported by all indexes."},
+	 { "IndexPreTransform_search", _wrap_IndexPreTransform_search, METH_VARARGS, NULL},
+	 { "IndexPreTransform_range_search", _wrap_IndexPreTransform_range_search, METH_VARARGS, NULL},
+	 { "IndexPreTransform_reconstruct", _wrap_IndexPreTransform_reconstruct, METH_VARARGS, NULL},
+	 { "IndexPreTransform_reconstruct_n", _wrap_IndexPreTransform_reconstruct_n, METH_VARARGS, NULL},
+	 { "IndexPreTransform_search_and_reconstruct", _wrap_IndexPreTransform_search_and_reconstruct, METH_VARARGS, NULL},
+	 { "IndexPreTransform_apply_chain", _wrap_IndexPreTransform_apply_chain, METH_VARARGS, "\n"
+		"apply the transforms in the chain. The returned float * may be\n"
+		"equal to x, otherwise it should be deallocated.\n"
+		""},
+	 { "IndexPreTransform_reverse_chain", _wrap_IndexPreTransform_reverse_chain, METH_VARARGS, "\n"
+		"Reverse the transforms in the chain. May not be implemented for\n"
+		"all transforms in the chain or may return approximate results.\n"
+		""},
+	 { "IndexPreTransform_get_distance_computer", _wrap_IndexPreTransform_get_distance_computer, METH_O, NULL},
+	 { "IndexPreTransform_sa_code_size", _wrap_IndexPreTransform_sa_code_size, METH_O, NULL},
+	 { "IndexPreTransform_sa_encode", _wrap_IndexPreTransform_sa_encode, METH_VARARGS, NULL},
+	 { "IndexPreTransform_sa_decode", _wrap_IndexPreTransform_sa_decode, METH_VARARGS, NULL},
+	 { "delete_IndexPreTransform", _wrap_delete_IndexPreTransform, METH_O, NULL},
+	 { "IndexPreTransform_swigregister", IndexPreTransform_swigregister, METH_O, NULL},
+	 { "IndexPreTransform_swiginit", IndexPreTransform_swiginit, METH_VARARGS, NULL},
+	 { "IndexRefine_base_index_set", _wrap_IndexRefine_base_index_set, METH_VARARGS, " faster index to pre-select the vectors that should be filtered"},
+	 { "IndexRefine_base_index_get", _wrap_IndexRefine_base_index_get, METH_O, " faster index to pre-select the vectors that should be filtered"},
+	 { "IndexRefine_refine_index_set", _wrap_IndexRefine_refine_index_set, METH_VARARGS, " refinement index"},
+	 { "IndexRefine_refine_index_get", _wrap_IndexRefine_refine_index_get, METH_O, " refinement index"},
+	 { "IndexRefine_own_fields_set", _wrap_IndexRefine_own_fields_set, METH_VARARGS, " should the base index be deallocated?"},
+	 { "IndexRefine_own_fields_get", _wrap_IndexRefine_own_fields_get, METH_O, " should the base index be deallocated?"},
+	 { "IndexRefine_own_refine_index_set", _wrap_IndexRefine_own_refine_index_set, METH_VARARGS, " same with the refinement index"},
+	 { "IndexRefine_own_refine_index_get", _wrap_IndexRefine_own_refine_index_get, METH_O, " same with the refinement index"},
+	 { "IndexRefine_k_factor_set", _wrap_IndexRefine_k_factor_set, METH_VARARGS, "\n"
+		"factor between k requested in search and the k requested from\n"
+		"the base_index (should be >= 1)\n"
+		""},
+	 { "IndexRefine_k_factor_get", _wrap_IndexRefine_k_factor_get, METH_O, "\n"
+		"factor between k requested in search and the k requested from\n"
+		"the base_index (should be >= 1)\n"
+		""},
+	 { "new_IndexRefine", _wrap_new_IndexRefine, METH_VARARGS, " initialize from empty index"},
+	 { "IndexRefine_train", _wrap_IndexRefine_train, METH_VARARGS, NULL},
+	 { "IndexRefine_add", _wrap_IndexRefine_add, METH_VARARGS, NULL},
+	 { "IndexRefine_reset", _wrap_IndexRefine_reset, METH_O, NULL},
+	 { "IndexRefine_search", _wrap_IndexRefine_search, METH_VARARGS, NULL},
+	 { "IndexRefine_reconstruct", _wrap_IndexRefine_reconstruct, METH_VARARGS, NULL},
+	 { "IndexRefine_sa_code_size", _wrap_IndexRefine_sa_code_size, METH_O, NULL},
+	 { "IndexRefine_sa_encode", _wrap_IndexRefine_sa_encode, METH_VARARGS, NULL},
+	 { "IndexRefine_sa_decode", _wrap_IndexRefine_sa_decode, METH_VARARGS, "\n"
+		"The sa_decode decodes from the index_refine, which is assumed to be more\n"
+		"accurate\n"
+		""},
+	 { "delete_IndexRefine", _wrap_delete_IndexRefine, METH_O, NULL},
+	 { "IndexRefine_swigregister", IndexRefine_swigregister, METH_O, NULL},
+	 { "IndexRefine_swiginit", IndexRefine_swiginit, METH_VARARGS, NULL},
+	 { "new_IndexRefineFlat", _wrap_new_IndexRefineFlat, METH_VARARGS, NULL},
+	 { "IndexRefineFlat_search", _wrap_IndexRefineFlat_search, METH_VARARGS, NULL},
+	 { "delete_IndexRefineFlat", _wrap_delete_IndexRefineFlat, METH_O, NULL},
+	 { "IndexRefineFlat_swigregister", IndexRefineFlat_swigregister, METH_O, NULL},
+	 { "IndexRefineFlat_swiginit", IndexRefineFlat_swiginit, METH_VARARGS, NULL},
+	 { "IndexLSH_nbits_set", _wrap_IndexLSH_nbits_set, METH_VARARGS, " nb of bits per vector"},
+	 { "IndexLSH_nbits_get", _wrap_IndexLSH_nbits_get, METH_O, " nb of bits per vector"},
+	 { "IndexLSH_rotate_data_set", _wrap_IndexLSH_rotate_data_set, METH_VARARGS, " whether to apply a random rotation to input"},
+	 { "IndexLSH_rotate_data_get", _wrap_IndexLSH_rotate_data_get, METH_O, " whether to apply a random rotation to input"},
+	 { "IndexLSH_train_thresholds_set", _wrap_IndexLSH_train_thresholds_set, METH_VARARGS, " whether we train thresholds or use 0"},
+	 { "IndexLSH_train_thresholds_get", _wrap_IndexLSH_train_thresholds_get, METH_O, " whether we train thresholds or use 0"},
+	 { "IndexLSH_rrot_set", _wrap_IndexLSH_rrot_set, METH_VARARGS, " optional random rotation"},
+	 { "IndexLSH_rrot_get", _wrap_IndexLSH_rrot_get, METH_O, " optional random rotation"},
+	 { "IndexLSH_thresholds_set", _wrap_IndexLSH_thresholds_set, METH_VARARGS, " thresholds to compare with"},
+	 { "IndexLSH_thresholds_get", _wrap_IndexLSH_thresholds_get, METH_O, " thresholds to compare with"},
+	 { "IndexLSH_apply_preprocess", _wrap_IndexLSH_apply_preprocess, METH_VARARGS, "\n"
+		" Preprocesses and resizes the input to the size required to\n"
+		"binarize the data\n"
+		"\n"
+		":type x: float\n"
+		":param x: input vectors, size n * d\n"
+		":rtype: float\n"
+		":return: output vectors, size n * bits. May be the same pointer\n"
+		"            as x, otherwise it should be deleted by the caller\n"
+		""},
+	 { "IndexLSH_train", _wrap_IndexLSH_train, METH_VARARGS, NULL},
+	 { "IndexLSH_search", _wrap_IndexLSH_search, METH_VARARGS, NULL},
+	 { "IndexLSH_transfer_thresholds", _wrap_IndexLSH_transfer_thresholds, METH_VARARGS, "\n"
+		"transfer the thresholds to a pre-processing stage (and unset\n"
+		"train_thresholds)\n"
+		""},
+	 { "delete_IndexLSH", _wrap_delete_IndexLSH, METH_O, NULL},
+	 { "new_IndexLSH", _wrap_new_IndexLSH, METH_VARARGS, NULL},
+	 { "IndexLSH_sa_encode", _wrap_IndexLSH_sa_encode, METH_VARARGS, NULL},
+	 { "IndexLSH_sa_decode", _wrap_IndexLSH_sa_decode, METH_VARARGS, NULL},
+	 { "IndexLSH_swigregister", IndexLSH_swigregister, METH_O, NULL},
+	 { "IndexLSH_swiginit", IndexLSH_swiginit, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingParameters_init_temperature_set", _wrap_SimulatedAnnealingParameters_init_temperature_set, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingParameters_init_temperature_get", _wrap_SimulatedAnnealingParameters_init_temperature_get, METH_O, NULL},
+	 { "SimulatedAnnealingParameters_temperature_decay_set", _wrap_SimulatedAnnealingParameters_temperature_decay_set, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingParameters_temperature_decay_get", _wrap_SimulatedAnnealingParameters_temperature_decay_get, METH_O, NULL},
+	 { "SimulatedAnnealingParameters_n_iter_set", _wrap_SimulatedAnnealingParameters_n_iter_set, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingParameters_n_iter_get", _wrap_SimulatedAnnealingParameters_n_iter_get, METH_O, NULL},
+	 { "SimulatedAnnealingParameters_n_redo_set", _wrap_SimulatedAnnealingParameters_n_redo_set, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingParameters_n_redo_get", _wrap_SimulatedAnnealingParameters_n_redo_get, METH_O, NULL},
+	 { "SimulatedAnnealingParameters_seed_set", _wrap_SimulatedAnnealingParameters_seed_set, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingParameters_seed_get", _wrap_SimulatedAnnealingParameters_seed_get, METH_O, NULL},
+	 { "SimulatedAnnealingParameters_verbose_set", _wrap_SimulatedAnnealingParameters_verbose_set, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingParameters_verbose_get", _wrap_SimulatedAnnealingParameters_verbose_get, METH_O, NULL},
+	 { "SimulatedAnnealingParameters_only_bit_flips_set", _wrap_SimulatedAnnealingParameters_only_bit_flips_set, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingParameters_only_bit_flips_get", _wrap_SimulatedAnnealingParameters_only_bit_flips_get, METH_O, NULL},
+	 { "SimulatedAnnealingParameters_init_random_set", _wrap_SimulatedAnnealingParameters_init_random_set, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingParameters_init_random_get", _wrap_SimulatedAnnealingParameters_init_random_get, METH_O, NULL},
+	 { "new_SimulatedAnnealingParameters", _wrap_new_SimulatedAnnealingParameters, METH_NOARGS, NULL},
+	 { "delete_SimulatedAnnealingParameters", _wrap_delete_SimulatedAnnealingParameters, METH_O, NULL},
+	 { "SimulatedAnnealingParameters_swigregister", SimulatedAnnealingParameters_swigregister, METH_O, NULL},
+	 { "SimulatedAnnealingParameters_swiginit", SimulatedAnnealingParameters_swiginit, METH_VARARGS, NULL},
+	 { "PermutationObjective_n_set", _wrap_PermutationObjective_n_set, METH_VARARGS, NULL},
+	 { "PermutationObjective_n_get", _wrap_PermutationObjective_n_get, METH_O, NULL},
+	 { "PermutationObjective_compute_cost", _wrap_PermutationObjective_compute_cost, METH_VARARGS, NULL},
+	 { "PermutationObjective_cost_update", _wrap_PermutationObjective_cost_update, METH_VARARGS, NULL},
+	 { "delete_PermutationObjective", _wrap_delete_PermutationObjective, METH_O, NULL},
+	 { "PermutationObjective_swigregister", PermutationObjective_swigregister, METH_O, NULL},
+	 { "ReproduceDistancesObjective_dis_weight_factor_set", _wrap_ReproduceDistancesObjective_dis_weight_factor_set, METH_VARARGS, NULL},
+	 { "ReproduceDistancesObjective_dis_weight_factor_get", _wrap_ReproduceDistancesObjective_dis_weight_factor_get, METH_O, NULL},
+	 { "ReproduceDistancesObjective_sqr", _wrap_ReproduceDistancesObjective_sqr, METH_O, NULL},
+	 { "ReproduceDistancesObjective_dis_weight", _wrap_ReproduceDistancesObjective_dis_weight, METH_VARARGS, NULL},
+	 { "ReproduceDistancesObjective_source_dis_set", _wrap_ReproduceDistancesObjective_source_dis_set, METH_VARARGS, " \"real\" corrected distances (size n^2)"},
+	 { "ReproduceDistancesObjective_source_dis_get", _wrap_ReproduceDistancesObjective_source_dis_get, METH_O, " \"real\" corrected distances (size n^2)"},
+	 { "ReproduceDistancesObjective_target_dis_set", _wrap_ReproduceDistancesObjective_target_dis_set, METH_VARARGS, " wanted distances (size n^2)"},
+	 { "ReproduceDistancesObjective_target_dis_get", _wrap_ReproduceDistancesObjective_target_dis_get, METH_O, " wanted distances (size n^2)"},
+	 { "ReproduceDistancesObjective_weights_set", _wrap_ReproduceDistancesObjective_weights_set, METH_VARARGS, " weights for each distance (size n^2)"},
+	 { "ReproduceDistancesObjective_weights_get", _wrap_ReproduceDistancesObjective_weights_get, METH_O, " weights for each distance (size n^2)"},
+	 { "ReproduceDistancesObjective_get_source_dis", _wrap_ReproduceDistancesObjective_get_source_dis, METH_VARARGS, NULL},
+	 { "ReproduceDistancesObjective_compute_cost", _wrap_ReproduceDistancesObjective_compute_cost, METH_VARARGS, NULL},
+	 { "ReproduceDistancesObjective_cost_update", _wrap_ReproduceDistancesObjective_cost_update, METH_VARARGS, NULL},
+	 { "new_ReproduceDistancesObjective", _wrap_new_ReproduceDistancesObjective, METH_VARARGS, NULL},
+	 { "ReproduceDistancesObjective_compute_mean_stdev", _wrap_ReproduceDistancesObjective_compute_mean_stdev, METH_VARARGS, NULL},
+	 { "ReproduceDistancesObjective_set_affine_target_dis", _wrap_ReproduceDistancesObjective_set_affine_target_dis, METH_VARARGS, NULL},
+	 { "delete_ReproduceDistancesObjective", _wrap_delete_ReproduceDistancesObjective, METH_O, NULL},
+	 { "ReproduceDistancesObjective_swigregister", ReproduceDistancesObjective_swigregister, METH_O, NULL},
+	 { "ReproduceDistancesObjective_swiginit", ReproduceDistancesObjective_swiginit, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingOptimizer_obj_set", _wrap_SimulatedAnnealingOptimizer_obj_set, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingOptimizer_obj_get", _wrap_SimulatedAnnealingOptimizer_obj_get, METH_O, NULL},
+	 { "SimulatedAnnealingOptimizer_n_set", _wrap_SimulatedAnnealingOptimizer_n_set, METH_VARARGS, " size of the permutation"},
+	 { "SimulatedAnnealingOptimizer_n_get", _wrap_SimulatedAnnealingOptimizer_n_get, METH_O, " size of the permutation"},
+	 { "SimulatedAnnealingOptimizer_logfile_set", _wrap_SimulatedAnnealingOptimizer_logfile_set, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingOptimizer_logfile_get", _wrap_SimulatedAnnealingOptimizer_logfile_get, METH_O, NULL},
+	 { "new_SimulatedAnnealingOptimizer", _wrap_new_SimulatedAnnealingOptimizer, METH_VARARGS, " logs values of the cost function"},
+	 { "SimulatedAnnealingOptimizer_rnd_set", _wrap_SimulatedAnnealingOptimizer_rnd_set, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingOptimizer_rnd_get", _wrap_SimulatedAnnealingOptimizer_rnd_get, METH_O, NULL},
+	 { "SimulatedAnnealingOptimizer_init_cost_set", _wrap_SimulatedAnnealingOptimizer_init_cost_set, METH_VARARGS, " remember initial cost of optimization"},
+	 { "SimulatedAnnealingOptimizer_init_cost_get", _wrap_SimulatedAnnealingOptimizer_init_cost_get, METH_O, " remember initial cost of optimization"},
+	 { "SimulatedAnnealingOptimizer_optimize", _wrap_SimulatedAnnealingOptimizer_optimize, METH_VARARGS, NULL},
+	 { "SimulatedAnnealingOptimizer_run_optimization", _wrap_SimulatedAnnealingOptimizer_run_optimization, METH_VARARGS, NULL},
+	 { "delete_SimulatedAnnealingOptimizer", _wrap_delete_SimulatedAnnealingOptimizer, METH_O, NULL},
+	 { "SimulatedAnnealingOptimizer_swigregister", SimulatedAnnealingOptimizer_swigregister, METH_O, NULL},
+	 { "SimulatedAnnealingOptimizer_swiginit", SimulatedAnnealingOptimizer_swiginit, METH_VARARGS, NULL},
+	 { "PolysemousTraining_optimization_type_set", _wrap_PolysemousTraining_optimization_type_set, METH_VARARGS, NULL},
+	 { "PolysemousTraining_optimization_type_get", _wrap_PolysemousTraining_optimization_type_get, METH_O, NULL},
+	 { "PolysemousTraining_ntrain_permutation_set", _wrap_PolysemousTraining_ntrain_permutation_set, METH_VARARGS, "\n"
+		" use 1/4 of the training points for the optimization, with\n"
+		"max. ntrain_permutation. If ntrain_permutation == 0: train on\n"
+		"centroids\n"
+		""},
+	 { "PolysemousTraining_ntrain_permutation_get", _wrap_PolysemousTraining_ntrain_permutation_get, METH_O, "\n"
+		" use 1/4 of the training points for the optimization, with\n"
+		"max. ntrain_permutation. If ntrain_permutation == 0: train on\n"
+		"centroids\n"
+		""},
+	 { "PolysemousTraining_dis_weight_factor_set", _wrap_PolysemousTraining_dis_weight_factor_set, METH_VARARGS, " decay of exp that weights distance loss"},
+	 { "PolysemousTraining_dis_weight_factor_get", _wrap_PolysemousTraining_dis_weight_factor_get, METH_O, " decay of exp that weights distance loss"},
+	 { "PolysemousTraining_max_memory_set", _wrap_PolysemousTraining_max_memory_set, METH_VARARGS, " refuse to train if it would require more than that amount of RAM"},
+	 { "PolysemousTraining_max_memory_get", _wrap_PolysemousTraining_max_memory_get, METH_O, " refuse to train if it would require more than that amount of RAM"},
+	 { "PolysemousTraining_log_pattern_set", _wrap_PolysemousTraining_log_pattern_set, METH_VARARGS, NULL},
+	 { "PolysemousTraining_log_pattern_get", _wrap_PolysemousTraining_log_pattern_get, METH_O, NULL},
+	 { "new_PolysemousTraining", _wrap_new_PolysemousTraining, METH_NOARGS, NULL},
+	 { "PolysemousTraining_optimize_pq_for_hamming", _wrap_PolysemousTraining_optimize_pq_for_hamming, METH_VARARGS, "\n"
+		"reorder the centroids so that the Hamming distance becomes a\n"
+		"good approximation of the SDC distance (called by train)\n"
+		""},
+	 { "PolysemousTraining_optimize_ranking", _wrap_PolysemousTraining_optimize_ranking, METH_VARARGS, " called by optimize_pq_for_hamming"},
+	 { "PolysemousTraining_optimize_reproduce_distances", _wrap_PolysemousTraining_optimize_reproduce_distances, METH_VARARGS, " called by optimize_pq_for_hamming"},
+	 { "PolysemousTraining_memory_usage_per_thread", _wrap_PolysemousTraining_memory_usage_per_thread, METH_VARARGS, " make sure we don't blow up the memory"},
+	 { "delete_PolysemousTraining", _wrap_delete_PolysemousTraining, METH_O, NULL},
+	 { "PolysemousTraining_swigregister", PolysemousTraining_swigregister, METH_O, NULL},
+	 { "PolysemousTraining_swiginit", PolysemousTraining_swiginit, METH_VARARGS, NULL},
+	 { "IndexPQ_pq_set", _wrap_IndexPQ_pq_set, METH_VARARGS, " The product quantizer used to encode the vectors"},
+	 { "IndexPQ_pq_get", _wrap_IndexPQ_pq_get, METH_O, " The product quantizer used to encode the vectors"},
+	 { "new_IndexPQ", _wrap_new_IndexPQ, METH_VARARGS, "\n"
+		" Constructor.\n"
+		"\n"
+		":type d: int\n"
+		":param d:      dimensionality of the input vectors\n"
+		":type M: int\n"
+		":param M:      number of subquantizers\n"
+		":type nbits: int\n"
+		":param nbits:  number of bit per subvector index\n"
+		"\n"
+		":type nbits: int\n"
+		":param nbits: number of bit per subvector index number of subquantizers dimensionality of the input vectors\n"
+		""},
+	 { "IndexPQ_train", _wrap_IndexPQ_train, METH_VARARGS, NULL},
+	 { "IndexPQ_search", _wrap_IndexPQ_search, METH_VARARGS, NULL},
+	 { "IndexPQ_sa_encode", _wrap_IndexPQ_sa_encode, METH_VARARGS, NULL},
+	 { "IndexPQ_sa_decode", _wrap_IndexPQ_sa_decode, METH_VARARGS, NULL},
+	 { "IndexPQ_get_distance_computer", _wrap_IndexPQ_get_distance_computer, METH_O, NULL},
+	 { "IndexPQ_do_polysemous_training_set", _wrap_IndexPQ_do_polysemous_training_set, METH_VARARGS, " false = standard PQ"},
+	 { "IndexPQ_do_polysemous_training_get", _wrap_IndexPQ_do_polysemous_training_get, METH_O, " false = standard PQ"},
+	 { "IndexPQ_polysemous_training_set", _wrap_IndexPQ_polysemous_training_set, METH_VARARGS, " parameters used for the polysemous training"},
+	 { "IndexPQ_polysemous_training_get", _wrap_IndexPQ_polysemous_training_get, METH_O, " parameters used for the polysemous training"},
+	 { "IndexPQ_search_type_set", _wrap_IndexPQ_search_type_set, METH_VARARGS, NULL},
+	 { "IndexPQ_search_type_get", _wrap_IndexPQ_search_type_get, METH_O, NULL},
+	 { "IndexPQ_encode_signs_set", _wrap_IndexPQ_encode_signs_set, METH_VARARGS, NULL},
+	 { "IndexPQ_encode_signs_get", _wrap_IndexPQ_encode_signs_get, METH_O, NULL},
+	 { "IndexPQ_polysemous_ht_set", _wrap_IndexPQ_polysemous_ht_set, METH_VARARGS, " Hamming threshold used for polysemy"},
+	 { "IndexPQ_polysemous_ht_get", _wrap_IndexPQ_polysemous_ht_get, METH_O, " Hamming threshold used for polysemy"},
+	 { "IndexPQ_search_core_polysemous", _wrap_IndexPQ_search_core_polysemous, METH_VARARGS, NULL},
+	 { "IndexPQ_hamming_distance_histogram", _wrap_IndexPQ_hamming_distance_histogram, METH_VARARGS, "\n"
+		"prepare query for a polysemous search, but instead of\n"
+		"computing the result, just get the histogram of Hamming\n"
+		"distances. May be computed on a provided dataset if xb != NULL\n"
+		":type dist_histogram: int\n"
+		":param dist_histogram: (M * nbits + 1)\n"
+		""},
+	 { "IndexPQ_hamming_distance_table", _wrap_IndexPQ_hamming_distance_table, METH_VARARGS, "\n"
+		" compute pairwise distances between queries and database\n"
+		"\n"
+		":type n: int\n"
+		":param n:    nb of query vectors\n"
+		":type x: float\n"
+		":param x:    query vector, size n * d\n"
+		":type dis: int\n"
+		":param dis:  output distances, size n * ntotal\n"
+		""},
+	 { "delete_IndexPQ", _wrap_delete_IndexPQ, METH_O, NULL},
+	 { "IndexPQ_swigregister", IndexPQ_swigregister, METH_O, NULL},
+	 { "IndexPQ_swiginit", IndexPQ_swiginit, METH_VARARGS, NULL},
+	 { "IndexPQStats_nq_set", _wrap_IndexPQStats_nq_set, METH_VARARGS, NULL},
+	 { "IndexPQStats_nq_get", _wrap_IndexPQStats_nq_get, METH_O, NULL},
+	 { "IndexPQStats_ncode_set", _wrap_IndexPQStats_ncode_set, METH_VARARGS, NULL},
+	 { "IndexPQStats_ncode_get", _wrap_IndexPQStats_ncode_get, METH_O, NULL},
+	 { "IndexPQStats_n_hamming_pass_set", _wrap_IndexPQStats_n_hamming_pass_set, METH_VARARGS, NULL},
+	 { "IndexPQStats_n_hamming_pass_get", _wrap_IndexPQStats_n_hamming_pass_get, METH_O, NULL},
+	 { "new_IndexPQStats", _wrap_new_IndexPQStats, METH_NOARGS, NULL},
+	 { "IndexPQStats_reset", _wrap_IndexPQStats_reset, METH_O, NULL},
+	 { "delete_IndexPQStats", _wrap_delete_IndexPQStats, METH_O, NULL},
+	 { "IndexPQStats_swigregister", IndexPQStats_swigregister, METH_O, NULL},
+	 { "IndexPQStats_swiginit", IndexPQStats_swiginit, METH_VARARGS, NULL},
+	 { "MultiIndexQuantizer_pq_set", _wrap_MultiIndexQuantizer_pq_set, METH_VARARGS, NULL},
+	 { "MultiIndexQuantizer_pq_get", _wrap_MultiIndexQuantizer_pq_get, METH_O, NULL},
+	 { "MultiIndexQuantizer_train", _wrap_MultiIndexQuantizer_train, METH_VARARGS, NULL},
+	 { "MultiIndexQuantizer_search", _wrap_MultiIndexQuantizer_search, METH_VARARGS, NULL},
+	 { "MultiIndexQuantizer_add", _wrap_MultiIndexQuantizer_add, METH_VARARGS, " add and reset will crash at runtime"},
+	 { "MultiIndexQuantizer_reset", _wrap_MultiIndexQuantizer_reset, METH_O, NULL},
+	 { "new_MultiIndexQuantizer", _wrap_new_MultiIndexQuantizer, METH_VARARGS, "\n"
+		" number of bit per subvector index\n"
+		":type M: int\n"
+		":param M: number of subquantizers dimension of the input vectors\n"
+		""},
+	 { "MultiIndexQuantizer_reconstruct", _wrap_MultiIndexQuantizer_reconstruct, METH_VARARGS, NULL},
+	 { "delete_MultiIndexQuantizer", _wrap_delete_MultiIndexQuantizer, METH_O, NULL},
+	 { "MultiIndexQuantizer_swigregister", MultiIndexQuantizer_swigregister, METH_O, NULL},
+	 { "MultiIndexQuantizer_swiginit", MultiIndexQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "MultiIndexQuantizer2_assign_indexes_set", _wrap_MultiIndexQuantizer2_assign_indexes_set, METH_VARARGS, " M Indexes on d / M dimensions"},
+	 { "MultiIndexQuantizer2_assign_indexes_get", _wrap_MultiIndexQuantizer2_assign_indexes_get, METH_O, " M Indexes on d / M dimensions"},
+	 { "MultiIndexQuantizer2_own_fields_set", _wrap_MultiIndexQuantizer2_own_fields_set, METH_VARARGS, NULL},
+	 { "MultiIndexQuantizer2_own_fields_get", _wrap_MultiIndexQuantizer2_own_fields_get, METH_O, NULL},
+	 { "new_MultiIndexQuantizer2", _wrap_new_MultiIndexQuantizer2, METH_VARARGS, NULL},
+	 { "MultiIndexQuantizer2_train", _wrap_MultiIndexQuantizer2_train, METH_VARARGS, NULL},
+	 { "MultiIndexQuantizer2_search", _wrap_MultiIndexQuantizer2_search, METH_VARARGS, NULL},
+	 { "delete_MultiIndexQuantizer2", _wrap_delete_MultiIndexQuantizer2, METH_O, NULL},
+	 { "MultiIndexQuantizer2_swigregister", MultiIndexQuantizer2_swigregister, METH_O, NULL},
+	 { "MultiIndexQuantizer2_swiginit", MultiIndexQuantizer2_swiginit, METH_VARARGS, NULL},
+	 { "IndexAdditiveQuantizer_aq_set", _wrap_IndexAdditiveQuantizer_aq_set, METH_VARARGS, NULL},
+	 { "IndexAdditiveQuantizer_aq_get", _wrap_IndexAdditiveQuantizer_aq_get, METH_O, NULL},
+	 { "new_IndexAdditiveQuantizer", _wrap_new_IndexAdditiveQuantizer, METH_VARARGS, NULL},
+	 { "IndexAdditiveQuantizer_search", _wrap_IndexAdditiveQuantizer_search, METH_VARARGS, NULL},
+	 { "IndexAdditiveQuantizer_sa_encode", _wrap_IndexAdditiveQuantizer_sa_encode, METH_VARARGS, NULL},
+	 { "IndexAdditiveQuantizer_sa_decode", _wrap_IndexAdditiveQuantizer_sa_decode, METH_VARARGS, NULL},
+	 { "delete_IndexAdditiveQuantizer", _wrap_delete_IndexAdditiveQuantizer, METH_O, NULL},
+	 { "IndexAdditiveQuantizer_swigregister", IndexAdditiveQuantizer_swigregister, METH_O, NULL},
+	 { "IndexAdditiveQuantizer_swiginit", IndexAdditiveQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "IndexResidualQuantizer_rq_set", _wrap_IndexResidualQuantizer_rq_set, METH_VARARGS, " The residual quantizer used to encode the vectors"},
+	 { "IndexResidualQuantizer_rq_get", _wrap_IndexResidualQuantizer_rq_get, METH_O, " The residual quantizer used to encode the vectors"},
+	 { "new_IndexResidualQuantizer", _wrap_new_IndexResidualQuantizer, METH_VARARGS, NULL},
+	 { "IndexResidualQuantizer_train", _wrap_IndexResidualQuantizer_train, METH_VARARGS, NULL},
+	 { "delete_IndexResidualQuantizer", _wrap_delete_IndexResidualQuantizer, METH_O, NULL},
+	 { "IndexResidualQuantizer_swigregister", IndexResidualQuantizer_swigregister, METH_O, NULL},
+	 { "IndexResidualQuantizer_swiginit", IndexResidualQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "IndexLocalSearchQuantizer_lsq_set", _wrap_IndexLocalSearchQuantizer_lsq_set, METH_VARARGS, NULL},
+	 { "IndexLocalSearchQuantizer_lsq_get", _wrap_IndexLocalSearchQuantizer_lsq_get, METH_O, NULL},
+	 { "new_IndexLocalSearchQuantizer", _wrap_new_IndexLocalSearchQuantizer, METH_VARARGS, "\n"
+		" Constructor.\n"
+		"\n"
+		":type d: int\n"
+		":param d:      dimensionality of the input vectors\n"
+		":type M: int\n"
+		":param M:      number of subquantizers\n"
+		":type nbits: int\n"
+		":param nbits:  number of bit per subvector index\n"
+		"\n"
+		":type metric: int, optional\n"
+		":param metric: number of bit per subvector index number of subquantizers dimensionality of the input vectors\n"
+		""},
+	 { "IndexLocalSearchQuantizer_train", _wrap_IndexLocalSearchQuantizer_train, METH_VARARGS, NULL},
+	 { "delete_IndexLocalSearchQuantizer", _wrap_delete_IndexLocalSearchQuantizer, METH_O, NULL},
+	 { "IndexLocalSearchQuantizer_swigregister", IndexLocalSearchQuantizer_swigregister, METH_O, NULL},
+	 { "IndexLocalSearchQuantizer_swiginit", IndexLocalSearchQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "AdditiveCoarseQuantizer_aq_set", _wrap_AdditiveCoarseQuantizer_aq_set, METH_VARARGS, NULL},
+	 { "AdditiveCoarseQuantizer_aq_get", _wrap_AdditiveCoarseQuantizer_aq_get, METH_O, NULL},
+	 { "new_AdditiveCoarseQuantizer", _wrap_new_AdditiveCoarseQuantizer, METH_VARARGS, NULL},
+	 { "AdditiveCoarseQuantizer_centroid_norms_set", _wrap_AdditiveCoarseQuantizer_centroid_norms_set, METH_VARARGS, " norms of centroids, useful for knn-search"},
+	 { "AdditiveCoarseQuantizer_centroid_norms_get", _wrap_AdditiveCoarseQuantizer_centroid_norms_get, METH_O, " norms of centroids, useful for knn-search"},
+	 { "AdditiveCoarseQuantizer_add", _wrap_AdditiveCoarseQuantizer_add, METH_VARARGS, " N/A"},
+	 { "AdditiveCoarseQuantizer_search", _wrap_AdditiveCoarseQuantizer_search, METH_VARARGS, NULL},
+	 { "AdditiveCoarseQuantizer_reconstruct", _wrap_AdditiveCoarseQuantizer_reconstruct, METH_VARARGS, NULL},
+	 { "AdditiveCoarseQuantizer_train", _wrap_AdditiveCoarseQuantizer_train, METH_VARARGS, NULL},
+	 { "AdditiveCoarseQuantizer_reset", _wrap_AdditiveCoarseQuantizer_reset, METH_O, " N/A"},
+	 { "delete_AdditiveCoarseQuantizer", _wrap_delete_AdditiveCoarseQuantizer, METH_O, NULL},
+	 { "AdditiveCoarseQuantizer_swigregister", AdditiveCoarseQuantizer_swigregister, METH_O, NULL},
+	 { "AdditiveCoarseQuantizer_swiginit", AdditiveCoarseQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "ResidualCoarseQuantizer_rq_set", _wrap_ResidualCoarseQuantizer_rq_set, METH_VARARGS, " The residual quantizer used to encode the vectors"},
+	 { "ResidualCoarseQuantizer_rq_get", _wrap_ResidualCoarseQuantizer_rq_get, METH_O, " The residual quantizer used to encode the vectors"},
+	 { "ResidualCoarseQuantizer_beam_factor_set", _wrap_ResidualCoarseQuantizer_beam_factor_set, METH_VARARGS, "\n"
+		"factor between the beam size and the search k\n"
+		"if negative, use exact search-to-centroid\n"
+		""},
+	 { "ResidualCoarseQuantizer_beam_factor_get", _wrap_ResidualCoarseQuantizer_beam_factor_get, METH_O, "\n"
+		"factor between the beam size and the search k\n"
+		"if negative, use exact search-to-centroid\n"
+		""},
+	 { "ResidualCoarseQuantizer_set_beam_factor", _wrap_ResidualCoarseQuantizer_set_beam_factor, METH_VARARGS, " computes centroid norms if required"},
+	 { "ResidualCoarseQuantizer_search", _wrap_ResidualCoarseQuantizer_search, METH_VARARGS, NULL},
+	 { "new_ResidualCoarseQuantizer", _wrap_new_ResidualCoarseQuantizer, METH_VARARGS, NULL},
+	 { "delete_ResidualCoarseQuantizer", _wrap_delete_ResidualCoarseQuantizer, METH_O, NULL},
+	 { "ResidualCoarseQuantizer_swigregister", ResidualCoarseQuantizer_swigregister, METH_O, NULL},
+	 { "ResidualCoarseQuantizer_swiginit", ResidualCoarseQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "LocalSearchCoarseQuantizer_lsq_set", _wrap_LocalSearchCoarseQuantizer_lsq_set, METH_VARARGS, " The residual quantizer used to encode the vectors"},
+	 { "LocalSearchCoarseQuantizer_lsq_get", _wrap_LocalSearchCoarseQuantizer_lsq_get, METH_O, " The residual quantizer used to encode the vectors"},
+	 { "new_LocalSearchCoarseQuantizer", _wrap_new_LocalSearchCoarseQuantizer, METH_VARARGS, "\n"
+		" Constructor.\n"
+		"\n"
+		":type d: int\n"
+		":param d:      dimensionality of the input vectors\n"
+		":type M: int\n"
+		":param M:      number of subquantizers\n"
+		":type nbits: int\n"
+		":param nbits:  number of bit per subvector index\n"
+		"\n"
+		":type nbits: int\n"
+		":param nbits: number of bit per subvector index number of subquantizers dimensionality of the input vectors\n"
+		""},
+	 { "delete_LocalSearchCoarseQuantizer", _wrap_delete_LocalSearchCoarseQuantizer, METH_O, NULL},
+	 { "LocalSearchCoarseQuantizer_swigregister", LocalSearchCoarseQuantizer_swigregister, METH_O, NULL},
+	 { "LocalSearchCoarseQuantizer_swiginit", LocalSearchCoarseQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "IOReader_name_set", _wrap_IOReader_name_set, METH_VARARGS, NULL},
+	 { "IOReader_name_get", _wrap_IOReader_name_get, METH_O, NULL},
+	 { "IOReader___call__", _wrap_IOReader___call__, METH_VARARGS, NULL},
+	 { "IOReader_fileno", _wrap_IOReader_fileno, METH_O, NULL},
+	 { "delete_IOReader", _wrap_delete_IOReader, METH_O, NULL},
+	 { "IOReader_swigregister", IOReader_swigregister, METH_O, NULL},
+	 { "IOWriter_name_set", _wrap_IOWriter_name_set, METH_VARARGS, NULL},
+	 { "IOWriter_name_get", _wrap_IOWriter_name_get, METH_O, NULL},
+	 { "IOWriter___call__", _wrap_IOWriter___call__, METH_VARARGS, NULL},
+	 { "IOWriter_fileno", _wrap_IOWriter_fileno, METH_O, NULL},
+	 { "delete_IOWriter", _wrap_delete_IOWriter, METH_O, NULL},
+	 { "IOWriter_swigregister", IOWriter_swigregister, METH_O, NULL},
+	 { "VectorIOReader_data_set", _wrap_VectorIOReader_data_set, METH_VARARGS, NULL},
+	 { "VectorIOReader_data_get", _wrap_VectorIOReader_data_get, METH_O, NULL},
+	 { "VectorIOReader_rp_set", _wrap_VectorIOReader_rp_set, METH_VARARGS, NULL},
+	 { "VectorIOReader_rp_get", _wrap_VectorIOReader_rp_get, METH_O, NULL},
+	 { "VectorIOReader___call__", _wrap_VectorIOReader___call__, METH_VARARGS, NULL},
+	 { "new_VectorIOReader", _wrap_new_VectorIOReader, METH_NOARGS, NULL},
+	 { "delete_VectorIOReader", _wrap_delete_VectorIOReader, METH_O, NULL},
+	 { "VectorIOReader_swigregister", VectorIOReader_swigregister, METH_O, NULL},
+	 { "VectorIOReader_swiginit", VectorIOReader_swiginit, METH_VARARGS, NULL},
+	 { "VectorIOWriter_data_set", _wrap_VectorIOWriter_data_set, METH_VARARGS, NULL},
+	 { "VectorIOWriter_data_get", _wrap_VectorIOWriter_data_get, METH_O, NULL},
+	 { "VectorIOWriter___call__", _wrap_VectorIOWriter___call__, METH_VARARGS, NULL},
+	 { "new_VectorIOWriter", _wrap_new_VectorIOWriter, METH_NOARGS, NULL},
+	 { "delete_VectorIOWriter", _wrap_delete_VectorIOWriter, METH_O, NULL},
+	 { "VectorIOWriter_swigregister", VectorIOWriter_swigregister, METH_O, NULL},
+	 { "VectorIOWriter_swiginit", VectorIOWriter_swiginit, METH_VARARGS, NULL},
+	 { "FileIOReader_f_set", _wrap_FileIOReader_f_set, METH_VARARGS, NULL},
+	 { "FileIOReader_f_get", _wrap_FileIOReader_f_get, METH_O, NULL},
+	 { "FileIOReader_need_close_set", _wrap_FileIOReader_need_close_set, METH_VARARGS, NULL},
+	 { "FileIOReader_need_close_get", _wrap_FileIOReader_need_close_get, METH_O, NULL},
+	 { "new_FileIOReader", _wrap_new_FileIOReader, METH_VARARGS, NULL},
+	 { "delete_FileIOReader", _wrap_delete_FileIOReader, METH_O, NULL},
+	 { "FileIOReader___call__", _wrap_FileIOReader___call__, METH_VARARGS, NULL},
+	 { "FileIOReader_fileno", _wrap_FileIOReader_fileno, METH_O, NULL},
+	 { "FileIOReader_swigregister", FileIOReader_swigregister, METH_O, NULL},
+	 { "FileIOReader_swiginit", FileIOReader_swiginit, METH_VARARGS, NULL},
+	 { "FileIOWriter_f_set", _wrap_FileIOWriter_f_set, METH_VARARGS, NULL},
+	 { "FileIOWriter_f_get", _wrap_FileIOWriter_f_get, METH_O, NULL},
+	 { "FileIOWriter_need_close_set", _wrap_FileIOWriter_need_close_set, METH_VARARGS, NULL},
+	 { "FileIOWriter_need_close_get", _wrap_FileIOWriter_need_close_get, METH_O, NULL},
+	 { "new_FileIOWriter", _wrap_new_FileIOWriter, METH_VARARGS, NULL},
+	 { "delete_FileIOWriter", _wrap_delete_FileIOWriter, METH_O, NULL},
+	 { "FileIOWriter___call__", _wrap_FileIOWriter___call__, METH_VARARGS, NULL},
+	 { "FileIOWriter_fileno", _wrap_FileIOWriter_fileno, METH_O, NULL},
+	 { "FileIOWriter_swigregister", FileIOWriter_swigregister, METH_O, NULL},
+	 { "FileIOWriter_swiginit", FileIOWriter_swiginit, METH_VARARGS, NULL},
+	 { "BufferedIOReader_reader_set", _wrap_BufferedIOReader_reader_set, METH_VARARGS, NULL},
+	 { "BufferedIOReader_reader_get", _wrap_BufferedIOReader_reader_get, METH_O, NULL},
+	 { "BufferedIOReader_bsz_set", _wrap_BufferedIOReader_bsz_set, METH_VARARGS, NULL},
+	 { "BufferedIOReader_bsz_get", _wrap_BufferedIOReader_bsz_get, METH_O, NULL},
+	 { "BufferedIOReader_ofs_set", _wrap_BufferedIOReader_ofs_set, METH_VARARGS, " offset in input stream"},
+	 { "BufferedIOReader_ofs_get", _wrap_BufferedIOReader_ofs_get, METH_O, " offset in input stream"},
+	 { "BufferedIOReader_ofs2_set", _wrap_BufferedIOReader_ofs2_set, METH_VARARGS, " number of bytes returned to caller"},
+	 { "BufferedIOReader_ofs2_get", _wrap_BufferedIOReader_ofs2_get, METH_O, " number of bytes returned to caller"},
+	 { "BufferedIOReader_b0_set", _wrap_BufferedIOReader_b0_set, METH_VARARGS, " range of available bytes in the buffer"},
+	 { "BufferedIOReader_b0_get", _wrap_BufferedIOReader_b0_get, METH_O, " range of available bytes in the buffer"},
+	 { "BufferedIOReader_b1_set", _wrap_BufferedIOReader_b1_set, METH_VARARGS, NULL},
+	 { "BufferedIOReader_b1_get", _wrap_BufferedIOReader_b1_get, METH_O, NULL},
+	 { "BufferedIOReader_buffer_set", _wrap_BufferedIOReader_buffer_set, METH_VARARGS, NULL},
+	 { "BufferedIOReader_buffer_get", _wrap_BufferedIOReader_buffer_get, METH_O, NULL},
+	 { "new_BufferedIOReader", _wrap_new_BufferedIOReader, METH_VARARGS, "\n"
+		":type bsz: int, optional\n"
+		":param bsz:    buffer size (bytes). Reads will be done by batched of\n"
+		"                  this size\n"
+		""},
+	 { "BufferedIOReader___call__", _wrap_BufferedIOReader___call__, METH_VARARGS, NULL},
+	 { "delete_BufferedIOReader", _wrap_delete_BufferedIOReader, METH_O, NULL},
+	 { "BufferedIOReader_swigregister", BufferedIOReader_swigregister, METH_O, NULL},
+	 { "BufferedIOReader_swiginit", BufferedIOReader_swiginit, METH_VARARGS, NULL},
+	 { "BufferedIOWriter_writer_set", _wrap_BufferedIOWriter_writer_set, METH_VARARGS, NULL},
+	 { "BufferedIOWriter_writer_get", _wrap_BufferedIOWriter_writer_get, METH_O, NULL},
+	 { "BufferedIOWriter_bsz_set", _wrap_BufferedIOWriter_bsz_set, METH_VARARGS, NULL},
+	 { "BufferedIOWriter_bsz_get", _wrap_BufferedIOWriter_bsz_get, METH_O, NULL},
+	 { "BufferedIOWriter_ofs_set", _wrap_BufferedIOWriter_ofs_set, METH_VARARGS, NULL},
+	 { "BufferedIOWriter_ofs_get", _wrap_BufferedIOWriter_ofs_get, METH_O, NULL},
+	 { "BufferedIOWriter_ofs2_set", _wrap_BufferedIOWriter_ofs2_set, METH_VARARGS, " number of bytes received from caller"},
+	 { "BufferedIOWriter_ofs2_get", _wrap_BufferedIOWriter_ofs2_get, METH_O, " number of bytes received from caller"},
+	 { "BufferedIOWriter_b0_set", _wrap_BufferedIOWriter_b0_set, METH_VARARGS, " amount of data in buffer"},
+	 { "BufferedIOWriter_b0_get", _wrap_BufferedIOWriter_b0_get, METH_O, " amount of data in buffer"},
+	 { "BufferedIOWriter_buffer_set", _wrap_BufferedIOWriter_buffer_set, METH_VARARGS, NULL},
+	 { "BufferedIOWriter_buffer_get", _wrap_BufferedIOWriter_buffer_get, METH_O, NULL},
+	 { "new_BufferedIOWriter", _wrap_new_BufferedIOWriter, METH_VARARGS, NULL},
+	 { "BufferedIOWriter___call__", _wrap_BufferedIOWriter___call__, METH_VARARGS, NULL},
+	 { "delete_BufferedIOWriter", _wrap_delete_BufferedIOWriter, METH_O, NULL},
+	 { "BufferedIOWriter_swigregister", BufferedIOWriter_swigregister, METH_O, NULL},
+	 { "BufferedIOWriter_swiginit", BufferedIOWriter_swiginit, METH_VARARGS, NULL},
+	 { "fourcc", _wrap_fourcc, METH_VARARGS, " cast a 4-character string to a uint32_t that can be written and read easily"},
+	 { "fourcc_inv", _wrap_fourcc_inv, METH_VARARGS, NULL},
+	 { "fourcc_inv_printable", _wrap_fourcc_inv_printable, METH_O, NULL},
+	 { "InvertedLists_nlist_set", _wrap_InvertedLists_nlist_set, METH_VARARGS, " number of possible key values"},
+	 { "InvertedLists_nlist_get", _wrap_InvertedLists_nlist_get, METH_O, " number of possible key values"},
+	 { "InvertedLists_code_size_set", _wrap_InvertedLists_code_size_set, METH_VARARGS, " code size per vector in bytes"},
+	 { "InvertedLists_code_size_get", _wrap_InvertedLists_code_size_get, METH_O, " code size per vector in bytes"},
+	 { "InvertedLists_list_size", _wrap_InvertedLists_list_size, METH_VARARGS, " get the size of a list"},
+	 { "InvertedLists_get_codes", _wrap_InvertedLists_get_codes, METH_VARARGS, "\n"
+		" get the codes for an inverted list\n"
+		"must be released by release_codes\n"
+		"\n"
+		":rtype: uint8_t\n"
+		":return: codes    size list_size * code_size\n"
+		""},
+	 { "InvertedLists_get_ids", _wrap_InvertedLists_get_ids, METH_VARARGS, "\n"
+		" get the ids for an inverted list\n"
+		"must be released by release_ids\n"
+		"\n"
+		":rtype: int\n"
+		":return: ids      size list_size\n"
+		""},
+	 { "InvertedLists_release_codes", _wrap_InvertedLists_release_codes, METH_VARARGS, " release codes returned by get_codes (default implementation is nop"},
+	 { "InvertedLists_release_ids", _wrap_InvertedLists_release_ids, METH_VARARGS, " release ids returned by get_ids"},
+	 { "InvertedLists_get_single_id", _wrap_InvertedLists_get_single_id, METH_VARARGS, "\n"
+		":rtype: int\n"
+		":return: a single id in an inverted list\n"
+		""},
+	 { "InvertedLists_get_single_code", _wrap_InvertedLists_get_single_code, METH_VARARGS, "\n"
+		":rtype: uint8_t\n"
+		":return: a single code in an inverted list\n"
+		"    (should be deallocated with release_codes)\n"
+		""},
+	 { "InvertedLists_prefetch_lists", _wrap_InvertedLists_prefetch_lists, METH_VARARGS, "\n"
+		"prepare the following lists (default does nothing)\n"
+		"a list can be -1 hence the signed long\n"
+		""},
+	 { "InvertedLists_add_entry", _wrap_InvertedLists_add_entry, METH_VARARGS, " add one entry to an inverted list"},
+	 { "InvertedLists_add_entries", _wrap_InvertedLists_add_entries, METH_VARARGS, NULL},
+	 { "InvertedLists_update_entry", _wrap_InvertedLists_update_entry, METH_VARARGS, NULL},
+	 { "InvertedLists_update_entries", _wrap_InvertedLists_update_entries, METH_VARARGS, NULL},
+	 { "InvertedLists_resize", _wrap_InvertedLists_resize, METH_VARARGS, NULL},
+	 { "InvertedLists_reset", _wrap_InvertedLists_reset, METH_O, NULL},
+	 { "InvertedLists_merge_from", _wrap_InvertedLists_merge_from, METH_VARARGS, " move all entries from oivf (empty on output)"},
+	 { "delete_InvertedLists", _wrap_delete_InvertedLists, METH_O, NULL},
+	 { "InvertedLists_imbalance_factor", _wrap_InvertedLists_imbalance_factor, METH_O, " 1= perfectly balanced, >1: imbalanced"},
+	 { "InvertedLists_print_stats", _wrap_InvertedLists_print_stats, METH_O, " display some stats about the inverted lists"},
+	 { "InvertedLists_compute_ntotal", _wrap_InvertedLists_compute_ntotal, METH_O, " sum up list sizes"},
+	 { "InvertedLists_swigregister", InvertedLists_swigregister, METH_O, NULL},
+	 { "ArrayInvertedLists_codes_set", _wrap_ArrayInvertedLists_codes_set, METH_VARARGS, NULL},
+	 { "ArrayInvertedLists_codes_get", _wrap_ArrayInvertedLists_codes_get, METH_O, NULL},
+	 { "ArrayInvertedLists_ids_set", _wrap_ArrayInvertedLists_ids_set, METH_VARARGS, " Inverted lists for indexes"},
+	 { "ArrayInvertedLists_ids_get", _wrap_ArrayInvertedLists_ids_get, METH_O, " Inverted lists for indexes"},
+	 { "new_ArrayInvertedLists", _wrap_new_ArrayInvertedLists, METH_VARARGS, NULL},
+	 { "ArrayInvertedLists_list_size", _wrap_ArrayInvertedLists_list_size, METH_VARARGS, NULL},
+	 { "ArrayInvertedLists_get_codes", _wrap_ArrayInvertedLists_get_codes, METH_VARARGS, NULL},
+	 { "ArrayInvertedLists_get_ids", _wrap_ArrayInvertedLists_get_ids, METH_VARARGS, NULL},
+	 { "ArrayInvertedLists_add_entries", _wrap_ArrayInvertedLists_add_entries, METH_VARARGS, NULL},
+	 { "ArrayInvertedLists_update_entries", _wrap_ArrayInvertedLists_update_entries, METH_VARARGS, NULL},
+	 { "ArrayInvertedLists_resize", _wrap_ArrayInvertedLists_resize, METH_VARARGS, NULL},
+	 { "delete_ArrayInvertedLists", _wrap_delete_ArrayInvertedLists, METH_O, NULL},
+	 { "ArrayInvertedLists_swigregister", ArrayInvertedLists_swigregister, METH_O, NULL},
+	 { "ArrayInvertedLists_swiginit", ArrayInvertedLists_swiginit, METH_VARARGS, NULL},
+	 { "ReadOnlyInvertedLists_add_entries", _wrap_ReadOnlyInvertedLists_add_entries, METH_VARARGS, NULL},
+	 { "ReadOnlyInvertedLists_update_entries", _wrap_ReadOnlyInvertedLists_update_entries, METH_VARARGS, NULL},
+	 { "ReadOnlyInvertedLists_resize", _wrap_ReadOnlyInvertedLists_resize, METH_VARARGS, NULL},
+	 { "delete_ReadOnlyInvertedLists", _wrap_delete_ReadOnlyInvertedLists, METH_O, NULL},
+	 { "ReadOnlyInvertedLists_swigregister", ReadOnlyInvertedLists_swigregister, METH_O, NULL},
+	 { "HStackInvertedLists_ils_set", _wrap_HStackInvertedLists_ils_set, METH_VARARGS, NULL},
+	 { "HStackInvertedLists_ils_get", _wrap_HStackInvertedLists_ils_get, METH_O, NULL},
+	 { "new_HStackInvertedLists", _wrap_new_HStackInvertedLists, METH_VARARGS, " build InvertedLists by concatenating nil of them"},
+	 { "HStackInvertedLists_list_size", _wrap_HStackInvertedLists_list_size, METH_VARARGS, NULL},
+	 { "HStackInvertedLists_get_codes", _wrap_HStackInvertedLists_get_codes, METH_VARARGS, NULL},
+	 { "HStackInvertedLists_get_ids", _wrap_HStackInvertedLists_get_ids, METH_VARARGS, NULL},
+	 { "HStackInvertedLists_prefetch_lists", _wrap_HStackInvertedLists_prefetch_lists, METH_VARARGS, NULL},
+	 { "HStackInvertedLists_release_codes", _wrap_HStackInvertedLists_release_codes, METH_VARARGS, NULL},
+	 { "HStackInvertedLists_release_ids", _wrap_HStackInvertedLists_release_ids, METH_VARARGS, NULL},
+	 { "HStackInvertedLists_get_single_id", _wrap_HStackInvertedLists_get_single_id, METH_VARARGS, NULL},
+	 { "HStackInvertedLists_get_single_code", _wrap_HStackInvertedLists_get_single_code, METH_VARARGS, NULL},
+	 { "delete_HStackInvertedLists", _wrap_delete_HStackInvertedLists, METH_O, NULL},
+	 { "HStackInvertedLists_swigregister", HStackInvertedLists_swigregister, METH_O, NULL},
+	 { "HStackInvertedLists_swiginit", HStackInvertedLists_swiginit, METH_VARARGS, NULL},
+	 { "SliceInvertedLists_il_set", _wrap_SliceInvertedLists_il_set, METH_VARARGS, NULL},
+	 { "SliceInvertedLists_il_get", _wrap_SliceInvertedLists_il_get, METH_O, NULL},
+	 { "SliceInvertedLists_i0_set", _wrap_SliceInvertedLists_i0_set, METH_VARARGS, NULL},
+	 { "SliceInvertedLists_i0_get", _wrap_SliceInvertedLists_i0_get, METH_O, NULL},
+	 { "SliceInvertedLists_i1_set", _wrap_SliceInvertedLists_i1_set, METH_VARARGS, NULL},
+	 { "SliceInvertedLists_i1_get", _wrap_SliceInvertedLists_i1_get, METH_O, NULL},
+	 { "new_SliceInvertedLists", _wrap_new_SliceInvertedLists, METH_VARARGS, NULL},
+	 { "SliceInvertedLists_list_size", _wrap_SliceInvertedLists_list_size, METH_VARARGS, NULL},
+	 { "SliceInvertedLists_get_codes", _wrap_SliceInvertedLists_get_codes, METH_VARARGS, NULL},
+	 { "SliceInvertedLists_get_ids", _wrap_SliceInvertedLists_get_ids, METH_VARARGS, NULL},
+	 { "SliceInvertedLists_release_codes", _wrap_SliceInvertedLists_release_codes, METH_VARARGS, NULL},
+	 { "SliceInvertedLists_release_ids", _wrap_SliceInvertedLists_release_ids, METH_VARARGS, NULL},
+	 { "SliceInvertedLists_get_single_id", _wrap_SliceInvertedLists_get_single_id, METH_VARARGS, NULL},
+	 { "SliceInvertedLists_get_single_code", _wrap_SliceInvertedLists_get_single_code, METH_VARARGS, NULL},
+	 { "SliceInvertedLists_prefetch_lists", _wrap_SliceInvertedLists_prefetch_lists, METH_VARARGS, NULL},
+	 { "delete_SliceInvertedLists", _wrap_delete_SliceInvertedLists, METH_O, NULL},
+	 { "SliceInvertedLists_swigregister", SliceInvertedLists_swigregister, METH_O, NULL},
+	 { "SliceInvertedLists_swiginit", SliceInvertedLists_swiginit, METH_VARARGS, NULL},
+	 { "VStackInvertedLists_ils_set", _wrap_VStackInvertedLists_ils_set, METH_VARARGS, NULL},
+	 { "VStackInvertedLists_ils_get", _wrap_VStackInvertedLists_ils_get, METH_O, NULL},
+	 { "VStackInvertedLists_cumsz_set", _wrap_VStackInvertedLists_cumsz_set, METH_VARARGS, NULL},
+	 { "VStackInvertedLists_cumsz_get", _wrap_VStackInvertedLists_cumsz_get, METH_O, NULL},
+	 { "new_VStackInvertedLists", _wrap_new_VStackInvertedLists, METH_VARARGS, " build InvertedLists by concatenating nil of them"},
+	 { "VStackInvertedLists_list_size", _wrap_VStackInvertedLists_list_size, METH_VARARGS, NULL},
+	 { "VStackInvertedLists_get_codes", _wrap_VStackInvertedLists_get_codes, METH_VARARGS, NULL},
+	 { "VStackInvertedLists_get_ids", _wrap_VStackInvertedLists_get_ids, METH_VARARGS, NULL},
+	 { "VStackInvertedLists_release_codes", _wrap_VStackInvertedLists_release_codes, METH_VARARGS, NULL},
+	 { "VStackInvertedLists_release_ids", _wrap_VStackInvertedLists_release_ids, METH_VARARGS, NULL},
+	 { "VStackInvertedLists_get_single_id", _wrap_VStackInvertedLists_get_single_id, METH_VARARGS, NULL},
+	 { "VStackInvertedLists_get_single_code", _wrap_VStackInvertedLists_get_single_code, METH_VARARGS, NULL},
+	 { "VStackInvertedLists_prefetch_lists", _wrap_VStackInvertedLists_prefetch_lists, METH_VARARGS, NULL},
+	 { "delete_VStackInvertedLists", _wrap_delete_VStackInvertedLists, METH_O, NULL},
+	 { "VStackInvertedLists_swigregister", VStackInvertedLists_swigregister, METH_O, NULL},
+	 { "VStackInvertedLists_swiginit", VStackInvertedLists_swiginit, METH_VARARGS, NULL},
+	 { "MaskedInvertedLists_il0_set", _wrap_MaskedInvertedLists_il0_set, METH_VARARGS, NULL},
+	 { "MaskedInvertedLists_il0_get", _wrap_MaskedInvertedLists_il0_get, METH_O, NULL},
+	 { "MaskedInvertedLists_il1_set", _wrap_MaskedInvertedLists_il1_set, METH_VARARGS, NULL},
+	 { "MaskedInvertedLists_il1_get", _wrap_MaskedInvertedLists_il1_get, METH_O, NULL},
+	 { "new_MaskedInvertedLists", _wrap_new_MaskedInvertedLists, METH_VARARGS, NULL},
+	 { "MaskedInvertedLists_list_size", _wrap_MaskedInvertedLists_list_size, METH_VARARGS, NULL},
+	 { "MaskedInvertedLists_get_codes", _wrap_MaskedInvertedLists_get_codes, METH_VARARGS, NULL},
+	 { "MaskedInvertedLists_get_ids", _wrap_MaskedInvertedLists_get_ids, METH_VARARGS, NULL},
+	 { "MaskedInvertedLists_release_codes", _wrap_MaskedInvertedLists_release_codes, METH_VARARGS, NULL},
+	 { "MaskedInvertedLists_release_ids", _wrap_MaskedInvertedLists_release_ids, METH_VARARGS, NULL},
+	 { "MaskedInvertedLists_get_single_id", _wrap_MaskedInvertedLists_get_single_id, METH_VARARGS, NULL},
+	 { "MaskedInvertedLists_get_single_code", _wrap_MaskedInvertedLists_get_single_code, METH_VARARGS, NULL},
+	 { "MaskedInvertedLists_prefetch_lists", _wrap_MaskedInvertedLists_prefetch_lists, METH_VARARGS, NULL},
+	 { "delete_MaskedInvertedLists", _wrap_delete_MaskedInvertedLists, METH_O, NULL},
+	 { "MaskedInvertedLists_swigregister", MaskedInvertedLists_swigregister, METH_O, NULL},
+	 { "MaskedInvertedLists_swiginit", MaskedInvertedLists_swiginit, METH_VARARGS, NULL},
+	 { "StopWordsInvertedLists_il0_set", _wrap_StopWordsInvertedLists_il0_set, METH_VARARGS, NULL},
+	 { "StopWordsInvertedLists_il0_get", _wrap_StopWordsInvertedLists_il0_get, METH_O, NULL},
+	 { "StopWordsInvertedLists_maxsize_set", _wrap_StopWordsInvertedLists_maxsize_set, METH_VARARGS, NULL},
+	 { "StopWordsInvertedLists_maxsize_get", _wrap_StopWordsInvertedLists_maxsize_get, METH_O, NULL},
+	 { "new_StopWordsInvertedLists", _wrap_new_StopWordsInvertedLists, METH_VARARGS, NULL},
+	 { "StopWordsInvertedLists_list_size", _wrap_StopWordsInvertedLists_list_size, METH_VARARGS, NULL},
+	 { "StopWordsInvertedLists_get_codes", _wrap_StopWordsInvertedLists_get_codes, METH_VARARGS, NULL},
+	 { "StopWordsInvertedLists_get_ids", _wrap_StopWordsInvertedLists_get_ids, METH_VARARGS, NULL},
+	 { "StopWordsInvertedLists_release_codes", _wrap_StopWordsInvertedLists_release_codes, METH_VARARGS, NULL},
+	 { "StopWordsInvertedLists_release_ids", _wrap_StopWordsInvertedLists_release_ids, METH_VARARGS, NULL},
+	 { "StopWordsInvertedLists_get_single_id", _wrap_StopWordsInvertedLists_get_single_id, METH_VARARGS, NULL},
+	 { "StopWordsInvertedLists_get_single_code", _wrap_StopWordsInvertedLists_get_single_code, METH_VARARGS, NULL},
+	 { "StopWordsInvertedLists_prefetch_lists", _wrap_StopWordsInvertedLists_prefetch_lists, METH_VARARGS, NULL},
+	 { "delete_StopWordsInvertedLists", _wrap_delete_StopWordsInvertedLists, METH_O, NULL},
+	 { "StopWordsInvertedLists_swigregister", StopWordsInvertedLists_swigregister, METH_O, NULL},
+	 { "StopWordsInvertedLists_swiginit", StopWordsInvertedLists_swiginit, METH_VARARGS, NULL},
+	 { "InvertedListsIOHook_key_get", _wrap_InvertedListsIOHook_key_get, METH_O, " string version of the fourcc"},
+	 { "InvertedListsIOHook_classname_get", _wrap_InvertedListsIOHook_classname_get, METH_O, " typeid.name"},
+	 { "InvertedListsIOHook_write", _wrap_InvertedListsIOHook_write, METH_VARARGS, " write the index to the IOWriter (including the fourcc)"},
+	 { "InvertedListsIOHook_read", _wrap_InvertedListsIOHook_read, METH_VARARGS, " called when the fourcc matches this class's fourcc"},
+	 { "InvertedListsIOHook_read_ArrayInvertedLists", _wrap_InvertedListsIOHook_read_ArrayInvertedLists, METH_VARARGS, "\n"
+		" read from a ArrayInvertedLists into this invertedlist type.\n"
+		"For this to work, the callback has to be enabled and the io_flag has to\n"
+		"be set to IO_FLAG_SKIP_IVF_DATA | (16 upper bits of the fourcc)\n"
+		"\n"
+		"(default implementation fails)\n"
+		""},
+	 { "delete_InvertedListsIOHook", _wrap_delete_InvertedListsIOHook, METH_O, NULL},
+	 { "InvertedListsIOHook_add_callback", _wrap_InvertedListsIOHook_add_callback, METH_O, NULL},
+	 { "InvertedListsIOHook_print_callbacks", _wrap_InvertedListsIOHook_print_callbacks, METH_NOARGS, NULL},
+	 { "InvertedListsIOHook_lookup", _wrap_InvertedListsIOHook_lookup, METH_O, NULL},
+	 { "InvertedListsIOHook_lookup_classname", _wrap_InvertedListsIOHook_lookup_classname, METH_O, NULL},
+	 { "InvertedListsIOHook_swigregister", InvertedListsIOHook_swigregister, METH_O, NULL},
+	 { "BlockInvertedLists_n_per_block_set", _wrap_BlockInvertedLists_n_per_block_set, METH_VARARGS, NULL},
+	 { "BlockInvertedLists_n_per_block_get", _wrap_BlockInvertedLists_n_per_block_get, METH_O, NULL},
+	 { "BlockInvertedLists_block_size_set", _wrap_BlockInvertedLists_block_size_set, METH_VARARGS, NULL},
+	 { "BlockInvertedLists_block_size_get", _wrap_BlockInvertedLists_block_size_get, METH_O, NULL},
+	 { "BlockInvertedLists_codes_set", _wrap_BlockInvertedLists_codes_set, METH_VARARGS, NULL},
+	 { "BlockInvertedLists_codes_get", _wrap_BlockInvertedLists_codes_get, METH_O, NULL},
+	 { "BlockInvertedLists_ids_set", _wrap_BlockInvertedLists_ids_set, METH_VARARGS, NULL},
+	 { "BlockInvertedLists_ids_get", _wrap_BlockInvertedLists_ids_get, METH_O, NULL},
+	 { "new_BlockInvertedLists", _wrap_new_BlockInvertedLists, METH_VARARGS, NULL},
+	 { "BlockInvertedLists_list_size", _wrap_BlockInvertedLists_list_size, METH_VARARGS, NULL},
+	 { "BlockInvertedLists_get_codes", _wrap_BlockInvertedLists_get_codes, METH_VARARGS, NULL},
+	 { "BlockInvertedLists_get_ids", _wrap_BlockInvertedLists_get_ids, METH_VARARGS, NULL},
+	 { "BlockInvertedLists_add_entries", _wrap_BlockInvertedLists_add_entries, METH_VARARGS, NULL},
+	 { "BlockInvertedLists_update_entries", _wrap_BlockInvertedLists_update_entries, METH_VARARGS, " not implemented"},
+	 { "BlockInvertedLists_resize", _wrap_BlockInvertedLists_resize, METH_VARARGS, NULL},
+	 { "delete_BlockInvertedLists", _wrap_delete_BlockInvertedLists, METH_O, NULL},
+	 { "BlockInvertedLists_swigregister", BlockInvertedLists_swigregister, METH_O, NULL},
+	 { "BlockInvertedLists_swiginit", BlockInvertedLists_swiginit, METH_VARARGS, NULL},
+	 { "lo_build", _wrap_lo_build, METH_VARARGS, "\n"
+		"Copyright (c) Facebook, Inc. and its affiliates.\n"
+		"\n"
+		"This source code is licensed under the MIT license found in the\n"
+		"LICENSE file in the root directory of this source tree.\n"
+		""},
+	 { "lo_listno", _wrap_lo_listno, METH_O, NULL},
+	 { "lo_offset", _wrap_lo_offset, METH_O, NULL},
+	 { "DirectMap_type_set", _wrap_DirectMap_type_set, METH_VARARGS, NULL},
+	 { "DirectMap_type_get", _wrap_DirectMap_type_get, METH_O, NULL},
+	 { "DirectMap_array_set", _wrap_DirectMap_array_set, METH_VARARGS, " map for direct access to the elements. Map ids to LO-encoded entries."},
+	 { "DirectMap_array_get", _wrap_DirectMap_array_get, METH_O, " map for direct access to the elements. Map ids to LO-encoded entries."},
+	 { "DirectMap_hashtable_set", _wrap_DirectMap_hashtable_set, METH_VARARGS, NULL},
+	 { "DirectMap_hashtable_get", _wrap_DirectMap_hashtable_get, METH_O, NULL},
+	 { "new_DirectMap", _wrap_new_DirectMap, METH_NOARGS, NULL},
+	 { "DirectMap_set_type", _wrap_DirectMap_set_type, METH_VARARGS, " set type and initialize"},
+	 { "DirectMap_get", _wrap_DirectMap_get, METH_VARARGS, " get an entry"},
+	 { "DirectMap_no", _wrap_DirectMap_no, METH_O, " for quick checks"},
+	 { "DirectMap_check_can_add", _wrap_DirectMap_check_can_add, METH_VARARGS, "\n"
+		"update the direct_map\n"
+		"\n"
+		" throw if Array and ids is not NULL\n"
+		""},
+	 { "DirectMap_add_single_id", _wrap_DirectMap_add_single_id, METH_VARARGS, " non thread-safe version"},
+	 { "DirectMap_clear", _wrap_DirectMap_clear, METH_O, " remove all entries"},
+	 { "DirectMap_remove_ids", _wrap_DirectMap_remove_ids, METH_VARARGS, "\n"
+		"operations on inverted lists that require translation with a DirectMap\n"
+		"\n"
+		" remove ids from the InvertedLists, possibly using the direct map\n"
+		""},
+	 { "DirectMap_update_codes", _wrap_DirectMap_update_codes, METH_VARARGS, " update entries, using the direct map"},
+	 { "delete_DirectMap", _wrap_delete_DirectMap, METH_O, NULL},
+	 { "DirectMap_swigregister", DirectMap_swigregister, METH_O, NULL},
+	 { "DirectMap_swiginit", DirectMap_swiginit, METH_VARARGS, NULL},
+	 { "DirectMapAdd_direct_map_set", _wrap_DirectMapAdd_direct_map_set, METH_VARARGS, NULL},
+	 { "DirectMapAdd_direct_map_get", _wrap_DirectMapAdd_direct_map_get, METH_O, NULL},
+	 { "DirectMapAdd_type_set", _wrap_DirectMapAdd_type_set, METH_VARARGS, NULL},
+	 { "DirectMapAdd_type_get", _wrap_DirectMapAdd_type_get, METH_O, NULL},
+	 { "DirectMapAdd_ntotal_set", _wrap_DirectMapAdd_ntotal_set, METH_VARARGS, NULL},
+	 { "DirectMapAdd_ntotal_get", _wrap_DirectMapAdd_ntotal_get, METH_O, NULL},
+	 { "DirectMapAdd_n_set", _wrap_DirectMapAdd_n_set, METH_VARARGS, NULL},
+	 { "DirectMapAdd_n_get", _wrap_DirectMapAdd_n_get, METH_O, NULL},
+	 { "DirectMapAdd_xids_set", _wrap_DirectMapAdd_xids_set, METH_VARARGS, NULL},
+	 { "DirectMapAdd_xids_get", _wrap_DirectMapAdd_xids_get, METH_O, NULL},
+	 { "DirectMapAdd_all_ofs_set", _wrap_DirectMapAdd_all_ofs_set, METH_VARARGS, NULL},
+	 { "DirectMapAdd_all_ofs_get", _wrap_DirectMapAdd_all_ofs_get, METH_O, NULL},
+	 { "new_DirectMapAdd", _wrap_new_DirectMapAdd, METH_VARARGS, NULL},
+	 { "DirectMapAdd_add", _wrap_DirectMapAdd_add, METH_VARARGS, " add vector i (with id xids[i]) at list_no and offset"},
+	 { "delete_DirectMapAdd", _wrap_delete_DirectMapAdd, METH_O, NULL},
+	 { "DirectMapAdd_swigregister", DirectMapAdd_swigregister, METH_O, NULL},
+	 { "DirectMapAdd_swiginit", DirectMapAdd_swiginit, METH_VARARGS, NULL},
+	 { "Level1Quantizer_quantizer_set", _wrap_Level1Quantizer_quantizer_set, METH_VARARGS, " quantizer that maps vectors to inverted lists"},
+	 { "Level1Quantizer_quantizer_get", _wrap_Level1Quantizer_quantizer_get, METH_O, " quantizer that maps vectors to inverted lists"},
+	 { "Level1Quantizer_nlist_set", _wrap_Level1Quantizer_nlist_set, METH_VARARGS, " number of possible key values"},
+	 { "Level1Quantizer_nlist_get", _wrap_Level1Quantizer_nlist_get, METH_O, " number of possible key values"},
+	 { "Level1Quantizer_quantizer_trains_alone_set", _wrap_Level1Quantizer_quantizer_trains_alone_set, METH_VARARGS, "\n"
+		"= 0: use the quantizer as index in a kmeans training\n"
+		"= 1: just pass on the training set to the train() of the quantizer\n"
+		"= 2: kmeans training on a flat index + add the centroids to the quantizer\n"
+		""},
+	 { "Level1Quantizer_quantizer_trains_alone_get", _wrap_Level1Quantizer_quantizer_trains_alone_get, METH_O, "\n"
+		"= 0: use the quantizer as index in a kmeans training\n"
+		"= 1: just pass on the training set to the train() of the quantizer\n"
+		"= 2: kmeans training on a flat index + add the centroids to the quantizer\n"
+		""},
+	 { "Level1Quantizer_own_fields_set", _wrap_Level1Quantizer_own_fields_set, METH_VARARGS, " whether object owns the quantizer (false by default)"},
+	 { "Level1Quantizer_own_fields_get", _wrap_Level1Quantizer_own_fields_get, METH_O, " whether object owns the quantizer (false by default)"},
+	 { "Level1Quantizer_cp_set", _wrap_Level1Quantizer_cp_set, METH_VARARGS, " to override default clustering params"},
+	 { "Level1Quantizer_cp_get", _wrap_Level1Quantizer_cp_get, METH_O, " to override default clustering params"},
+	 { "Level1Quantizer_clustering_index_set", _wrap_Level1Quantizer_clustering_index_set, METH_VARARGS, " to override index used during clustering"},
+	 { "Level1Quantizer_clustering_index_get", _wrap_Level1Quantizer_clustering_index_get, METH_O, " to override index used during clustering"},
+	 { "Level1Quantizer_train_q1", _wrap_Level1Quantizer_train_q1, METH_VARARGS, " Trains the quantizer and calls train_residual to train sub-quantizers"},
+	 { "Level1Quantizer_coarse_code_size", _wrap_Level1Quantizer_coarse_code_size, METH_O, " compute the number of bytes required to store list ids"},
+	 { "Level1Quantizer_encode_listno", _wrap_Level1Quantizer_encode_listno, METH_VARARGS, NULL},
+	 { "Level1Quantizer_decode_listno", _wrap_Level1Quantizer_decode_listno, METH_VARARGS, NULL},
+	 { "new_Level1Quantizer", _wrap_new_Level1Quantizer, METH_VARARGS, NULL},
+	 { "delete_Level1Quantizer", _wrap_delete_Level1Quantizer, METH_O, NULL},
+	 { "Level1Quantizer_swigregister", Level1Quantizer_swigregister, METH_O, NULL},
+	 { "Level1Quantizer_swiginit", Level1Quantizer_swiginit, METH_VARARGS, NULL},
+	 { "IVFSearchParameters_nprobe_set", _wrap_IVFSearchParameters_nprobe_set, METH_VARARGS, " number of probes at query time"},
+	 { "IVFSearchParameters_nprobe_get", _wrap_IVFSearchParameters_nprobe_get, METH_O, " number of probes at query time"},
+	 { "IVFSearchParameters_max_codes_set", _wrap_IVFSearchParameters_max_codes_set, METH_VARARGS, " max nb of codes to visit to do a query"},
+	 { "IVFSearchParameters_max_codes_get", _wrap_IVFSearchParameters_max_codes_get, METH_O, " max nb of codes to visit to do a query"},
+	 { "new_IVFSearchParameters", _wrap_new_IVFSearchParameters, METH_NOARGS, NULL},
+	 { "delete_IVFSearchParameters", _wrap_delete_IVFSearchParameters, METH_O, NULL},
+	 { "IVFSearchParameters_swigregister", IVFSearchParameters_swigregister, METH_O, NULL},
+	 { "IVFSearchParameters_swiginit", IVFSearchParameters_swiginit, METH_VARARGS, NULL},
+	 { "IndexIVF_invlists_set", _wrap_IndexIVF_invlists_set, METH_VARARGS, " Access to the actual data"},
+	 { "IndexIVF_invlists_get", _wrap_IndexIVF_invlists_get, METH_O, " Access to the actual data"},
+	 { "IndexIVF_own_invlists_set", _wrap_IndexIVF_own_invlists_set, METH_VARARGS, NULL},
+	 { "IndexIVF_own_invlists_get", _wrap_IndexIVF_own_invlists_get, METH_O, NULL},
+	 { "IndexIVF_code_size_set", _wrap_IndexIVF_code_size_set, METH_VARARGS, " code size per vector in bytes"},
+	 { "IndexIVF_code_size_get", _wrap_IndexIVF_code_size_get, METH_O, " code size per vector in bytes"},
+	 { "IndexIVF_nprobe_set", _wrap_IndexIVF_nprobe_set, METH_VARARGS, " number of probes at query time"},
+	 { "IndexIVF_nprobe_get", _wrap_IndexIVF_nprobe_get, METH_O, " number of probes at query time"},
+	 { "IndexIVF_max_codes_set", _wrap_IndexIVF_max_codes_set, METH_VARARGS, " max nb of codes to visit to do a query"},
+	 { "IndexIVF_max_codes_get", _wrap_IndexIVF_max_codes_get, METH_O, " max nb of codes to visit to do a query"},
+	 { "IndexIVF_parallel_mode_set", _wrap_IndexIVF_parallel_mode_set, METH_VARARGS, "\n"
+		" Parallel mode determines how queries are parallelized with OpenMP\n"
+		"\n"
+		"0 (default): split over queries\n"
+		"1: parallelize over inverted lists\n"
+		"2: parallelize over both\n"
+		"3: split over queries with a finer granularity\n"
+		"\n"
+		"PARALLEL_MODE_NO_HEAP_INIT: binary or with the previous to\n"
+		"prevent the heap to be initialized and finalized\n"
+		""},
+	 { "IndexIVF_parallel_mode_get", _wrap_IndexIVF_parallel_mode_get, METH_O, "\n"
+		" Parallel mode determines how queries are parallelized with OpenMP\n"
+		"\n"
+		"0 (default): split over queries\n"
+		"1: parallelize over inverted lists\n"
+		"2: parallelize over both\n"
+		"3: split over queries with a finer granularity\n"
+		"\n"
+		"PARALLEL_MODE_NO_HEAP_INIT: binary or with the previous to\n"
+		"prevent the heap to be initialized and finalized\n"
+		""},
+	 { "IndexIVF_PARALLEL_MODE_NO_HEAP_INIT_get", _wrap_IndexIVF_PARALLEL_MODE_NO_HEAP_INIT_get, METH_O, NULL},
+	 { "IndexIVF_direct_map_set", _wrap_IndexIVF_direct_map_set, METH_VARARGS, "\n"
+		"optional map that maps back ids to invlist entries. This\n"
+		"enables reconstruct()\n"
+		""},
+	 { "IndexIVF_direct_map_get", _wrap_IndexIVF_direct_map_get, METH_O, "\n"
+		"optional map that maps back ids to invlist entries. This\n"
+		"enables reconstruct()\n"
+		""},
+	 { "IndexIVF_reset", _wrap_IndexIVF_reset, METH_O, NULL},
+	 { "IndexIVF_train", _wrap_IndexIVF_train, METH_VARARGS, " Trains the quantizer and calls train_residual to train sub-quantizers"},
+	 { "IndexIVF_add", _wrap_IndexIVF_add, METH_VARARGS, " Calls add_with_ids with NULL ids"},
+	 { "IndexIVF_add_with_ids", _wrap_IndexIVF_add_with_ids, METH_VARARGS, " default implementation that calls encode_vectors"},
+	 { "IndexIVF_add_core", _wrap_IndexIVF_add_core, METH_VARARGS, "\n"
+		" Implementation of vector addition where the vector assignments are\n"
+		"predefined. The default implementation hands over the code extraction to\n"
+		"encode_vectors.\n"
+		"\n"
+		":type precomputed_idx: int\n"
+		":param precomputed_idx:    quantization indices for the input vectors\n"
+		"    (size n)\n"
+		""},
+	 { "IndexIVF_encode_vectors", _wrap_IndexIVF_encode_vectors, METH_VARARGS, "\n"
+		" Encodes a set of vectors as they would appear in the inverted lists\n"
+		"\n"
+		":type list_nos: int\n"
+		":param list_nos:   inverted list ids as returned by the\n"
+		"                      quantizer (size n). -1s are ignored.\n"
+		":type codes: uint8_t\n"
+		":param codes:      output codes, size n * code_size\n"
+		":type include_listno: boolean, optional\n"
+		":param include_listno:\n"
+		"                      include the list ids in the code (in this case add\n"
+		"                      ceil(log8(nlist)) to the code size)\n"
+		""},
+	 { "IndexIVF_add_sa_codes", _wrap_IndexIVF_add_sa_codes, METH_VARARGS, "\n"
+		" Add vectors that are computed with the standalone codec\n"
+		"\n"
+		":type codes: uint8_t\n"
+		":param codes:  codes to add size n * sa_code_size()\n"
+		":type xids: int\n"
+		":param xids:   corresponding ids, size n\n"
+		""},
+	 { "IndexIVF_train_residual", _wrap_IndexIVF_train_residual, METH_VARARGS, "\n"
+		"Sub-classes that encode the residuals can train their encoders here\n"
+		"does nothing by default\n"
+		""},
+	 { "IndexIVF_search_preassigned", _wrap_IndexIVF_search_preassigned, METH_VARARGS, "\n"
+		" search a set of vectors, that are pre-quantized by the IVF\n"
+		" quantizer. Fill in the corresponding heaps with the query\n"
+		" results. The default implementation uses InvertedListScanners\n"
+		" to do the search.\n"
+		"\n"
+		":type n: int\n"
+		":param n:      nb of vectors to query\n"
+		":type x: float\n"
+		":param x:      query vectors, size nx * d\n"
+		":type assign: int\n"
+		":param assign: coarse quantization indices, size nx * nprobe\n"
+		":type centroid_dis: float\n"
+		":param centroid_dis:\n"
+		"                  distances to coarse centroids, size nx * nprobe\n"
+		":param distance:\n"
+		"                  output distances, size n * k\n"
+		":type labels: int\n"
+		":param labels: output labels, size n * k\n"
+		":type store_pairs: boolean\n"
+		":param store_pairs: store inv list index + inv list offset\n"
+		"                        instead in upper/lower 32 bit of result,\n"
+		"                        instead of ids (used for reranking).\n"
+		":type params: :py:class:`IVFSearchParameters`, optional\n"
+		":param params: used to override the object's search parameters\n"
+		":type stats: :py:class:`IndexIVFStats`, optional\n"
+		":param stats:  search stats to be updated (can be null)\n"
+		""},
+	 { "IndexIVF_search", _wrap_IndexIVF_search, METH_VARARGS, " assign the vectors, then call search_preassign"},
+	 { "IndexIVF_range_search", _wrap_IndexIVF_range_search, METH_VARARGS, NULL},
+	 { "IndexIVF_range_search_preassigned", _wrap_IndexIVF_range_search_preassigned, METH_VARARGS, NULL},
+	 { "IndexIVF_get_InvertedListScanner", _wrap_IndexIVF_get_InvertedListScanner, METH_VARARGS, "\n"
+		" Get a scanner for this index (store_pairs means ignore labels)\n"
+		"\n"
+		"The default search implementation uses this to compute the distances\n"
+		""},
+	 { "IndexIVF_reconstruct", _wrap_IndexIVF_reconstruct, METH_VARARGS, " reconstruct a vector. Works only if maintain_direct_map is set to 1 or 2"},
+	 { "IndexIVF_update_vectors", _wrap_IndexIVF_update_vectors, METH_VARARGS, "\n"
+		" Update a subset of vectors.\n"
+		"\n"
+		"The index must have a direct_map\n"
+		"\n"
+		":type nv: int\n"
+		":param nv:     nb of vectors to update\n"
+		":type idx: int\n"
+		":param idx:    vector indices to update, size nv\n"
+		":type v: float\n"
+		":param v:      vectors of new values, size nv*d\n"
+		""},
+	 { "IndexIVF_reconstruct_n", _wrap_IndexIVF_reconstruct_n, METH_VARARGS, "\n"
+		" Reconstruct a subset of the indexed vectors.\n"
+		"\n"
+		"Overrides default implementation to bypass reconstruct() which requires\n"
+		"direct_map to be maintained.\n"
+		"\n"
+		":type i0: int\n"
+		":param i0:     first vector to reconstruct\n"
+		":type ni: int\n"
+		":param ni:     nb of vectors to reconstruct\n"
+		":type recons: float\n"
+		":param recons: output array of reconstructed vectors, size ni * d\n"
+		""},
+	 { "IndexIVF_search_and_reconstruct", _wrap_IndexIVF_search_and_reconstruct, METH_VARARGS, "\n"
+		" Similar to search, but also reconstructs the stored vectors (or an\n"
+		"approximation in the case of lossy coding) for the search results.\n"
+		"\n"
+		"Overrides default implementation to avoid having to maintain direct_map\n"
+		"and instead fetch the code offsets through the `store_pairs` flag in\n"
+		"search_preassigned().\n"
+		"\n"
+		":type recons: float\n"
+		":param recons:      reconstructed vectors size (n, k, d)\n"
+		""},
+	 { "IndexIVF_reconstruct_from_offset", _wrap_IndexIVF_reconstruct_from_offset, METH_VARARGS, "\n"
+		" Reconstruct a vector given the location in terms of (inv list index +\n"
+		"inv list offset) instead of the id.\n"
+		"\n"
+		"Useful for reconstructing when the direct_map is not maintained and\n"
+		"the inv list offset is computed by search_preassigned() with\n"
+		"`store_pairs` set.\n"
+		""},
+	 { "IndexIVF_remove_ids", _wrap_IndexIVF_remove_ids, METH_VARARGS, " Dataset manipulation functions"},
+	 { "IndexIVF_check_compatible_for_merge", _wrap_IndexIVF_check_compatible_for_merge, METH_VARARGS, "\n"
+		" check that the two indexes are compatible (ie, they are\n"
+		"trained in the same way and have the same\n"
+		"parameters). Otherwise throw.\n"
+		""},
+	 { "IndexIVF_merge_from", _wrap_IndexIVF_merge_from, METH_VARARGS, "\n"
+		" moves the entries from another dataset to self. On output,\n"
+		"other is empty. add_id is added to all moved ids (for\n"
+		"sequential ids, this would be this->ntotal\n"
+		""},
+	 { "IndexIVF_copy_subset_to", _wrap_IndexIVF_copy_subset_to, METH_VARARGS, "\n"
+		" copy a subset of the entries index to the other index\n"
+		"\n"
+		"if subset_type == 0: copies ids in [a1, a2)\n"
+		"if subset_type == 1: copies ids if id % a1 == a2\n"
+		"if subset_type == 2: copies inverted lists such that a1\n"
+		"                     elements are left before and a2 elements are after\n"
+		""},
+	 { "delete_IndexIVF", _wrap_delete_IndexIVF, METH_O, NULL},
+	 { "IndexIVF_get_list_size", _wrap_IndexIVF_get_list_size, METH_VARARGS, NULL},
+	 { "IndexIVF_make_direct_map", _wrap_IndexIVF_make_direct_map, METH_VARARGS, "\n"
+		" intialize a direct map\n"
+		"\n"
+		":type new_maintain_direct_map: boolean, optional\n"
+		":param new_maintain_direct_map:    if true, create a direct map,\n"
+		"                                      else clear it\n"
+		""},
+	 { "IndexIVF_set_direct_map_type", _wrap_IndexIVF_set_direct_map_type, METH_VARARGS, NULL},
+	 { "IndexIVF_replace_invlists", _wrap_IndexIVF_replace_invlists, METH_VARARGS, " replace the inverted lists, old one is deallocated if own_invlists"},
+	 { "IndexIVF_sa_code_size", _wrap_IndexIVF_sa_code_size, METH_O, NULL},
+	 { "IndexIVF_sa_encode", _wrap_IndexIVF_sa_encode, METH_VARARGS, NULL},
+	 { "IndexIVF_swigregister", IndexIVF_swigregister, METH_O, NULL},
+	 { "IndexIVFStats_nq_set", _wrap_IndexIVFStats_nq_set, METH_VARARGS, NULL},
+	 { "IndexIVFStats_nq_get", _wrap_IndexIVFStats_nq_get, METH_O, NULL},
+	 { "IndexIVFStats_nlist_set", _wrap_IndexIVFStats_nlist_set, METH_VARARGS, NULL},
+	 { "IndexIVFStats_nlist_get", _wrap_IndexIVFStats_nlist_get, METH_O, NULL},
+	 { "IndexIVFStats_ndis_set", _wrap_IndexIVFStats_ndis_set, METH_VARARGS, NULL},
+	 { "IndexIVFStats_ndis_get", _wrap_IndexIVFStats_ndis_get, METH_O, NULL},
+	 { "IndexIVFStats_nheap_updates_set", _wrap_IndexIVFStats_nheap_updates_set, METH_VARARGS, NULL},
+	 { "IndexIVFStats_nheap_updates_get", _wrap_IndexIVFStats_nheap_updates_get, METH_O, NULL},
+	 { "IndexIVFStats_quantization_time_set", _wrap_IndexIVFStats_quantization_time_set, METH_VARARGS, NULL},
+	 { "IndexIVFStats_quantization_time_get", _wrap_IndexIVFStats_quantization_time_get, METH_O, NULL},
+	 { "IndexIVFStats_search_time_set", _wrap_IndexIVFStats_search_time_set, METH_VARARGS, NULL},
+	 { "IndexIVFStats_search_time_get", _wrap_IndexIVFStats_search_time_get, METH_O, NULL},
+	 { "new_IndexIVFStats", _wrap_new_IndexIVFStats, METH_NOARGS, NULL},
+	 { "IndexIVFStats_reset", _wrap_IndexIVFStats_reset, METH_O, NULL},
+	 { "IndexIVFStats_add", _wrap_IndexIVFStats_add, METH_VARARGS, NULL},
+	 { "delete_IndexIVFStats", _wrap_delete_IndexIVFStats, METH_O, NULL},
+	 { "IndexIVFStats_swigregister", IndexIVFStats_swigregister, METH_O, NULL},
+	 { "IndexIVFStats_swiginit", IndexIVFStats_swiginit, METH_VARARGS, NULL},
+	 { "check_compatible_for_merge", _wrap_check_compatible_for_merge, METH_VARARGS, "\n"
+		" check if two indexes have the same parameters and are trained in\n"
+		"the same way, otherwise throw.\n"
+		""},
+	 { "extract_index_ivf", _wrap_extract_index_ivf, METH_VARARGS, "\n"
+		" get an IndexIVF from an index. The index may be an IndexIVF or\n"
+		"some wrapper class that encloses an IndexIVF\n"
+		"\n"
+		"throws an exception if this is not the case.\n"
+		""},
+	 { "try_extract_index_ivf", _wrap_try_extract_index_ivf, METH_VARARGS, " same as above but returns nullptr instead of throwing on failure"},
+	 { "merge_into", _wrap_merge_into, METH_VARARGS, "\n"
+		" Merge index1 into index0. Works on IndexIVF's and IndexIVF's\n"
+		" embedded in a IndexPreTransform. On output, the index1 is empty.\n"
+		"\n"
+		":type shift_ids: boolean\n"
+		":param shift_ids:: translate the ids from index1 to index0->prev_ntotal\n"
+		""},
+	 { "search_centroid", _wrap_search_centroid, METH_VARARGS, NULL},
+	 { "search_and_return_centroids", _wrap_search_and_return_centroids, METH_VARARGS, NULL},
+	 { "SlidingIndexWindow_index_set", _wrap_SlidingIndexWindow_index_set, METH_VARARGS, " common index that contains the sliding window"},
+	 { "SlidingIndexWindow_index_get", _wrap_SlidingIndexWindow_index_get, METH_O, " common index that contains the sliding window"},
+	 { "SlidingIndexWindow_ils_set", _wrap_SlidingIndexWindow_ils_set, METH_VARARGS, " InvertedLists of index"},
+	 { "SlidingIndexWindow_ils_get", _wrap_SlidingIndexWindow_ils_get, METH_O, " InvertedLists of index"},
+	 { "SlidingIndexWindow_n_slice_set", _wrap_SlidingIndexWindow_n_slice_set, METH_VARARGS, " number of slices currently in index"},
+	 { "SlidingIndexWindow_n_slice_get", _wrap_SlidingIndexWindow_n_slice_get, METH_O, " number of slices currently in index"},
+	 { "SlidingIndexWindow_nlist_set", _wrap_SlidingIndexWindow_nlist_set, METH_VARARGS, " same as index->nlist"},
+	 { "SlidingIndexWindow_nlist_get", _wrap_SlidingIndexWindow_nlist_get, METH_O, " same as index->nlist"},
+	 { "SlidingIndexWindow_sizes_set", _wrap_SlidingIndexWindow_sizes_set, METH_VARARGS, " cumulative list sizes at each slice"},
+	 { "SlidingIndexWindow_sizes_get", _wrap_SlidingIndexWindow_sizes_get, METH_O, " cumulative list sizes at each slice"},
+	 { "new_SlidingIndexWindow", _wrap_new_SlidingIndexWindow, METH_O, " index should be initially empty and trained"},
+	 { "SlidingIndexWindow_step", _wrap_SlidingIndexWindow_step, METH_VARARGS, "\n"
+		" Add one index to the current index and remove the oldest one.\n"
+		"\n"
+		":type sub_index: :py:class:`Index`\n"
+		":param sub_index:        slice to swap in (can be NULL)\n"
+		":type remove_oldest: boolean\n"
+		":param remove_oldest:    if true, remove the oldest slices\n"
+		""},
+	 { "delete_SlidingIndexWindow", _wrap_delete_SlidingIndexWindow, METH_O, NULL},
+	 { "SlidingIndexWindow_swigregister", SlidingIndexWindow_swigregister, METH_O, NULL},
+	 { "SlidingIndexWindow_swiginit", SlidingIndexWindow_swiginit, METH_VARARGS, NULL},
+	 { "get_invlist_range", _wrap_get_invlist_range, METH_VARARGS, " Get a subset of inverted lists [i0, i1)"},
+	 { "set_invlist_range", _wrap_set_invlist_range, METH_VARARGS, " Set a subset of inverted lists"},
+	 { "search_with_parameters", _wrap_search_with_parameters, METH_VARARGS, "\n"
+		" search an IndexIVF, possibly embedded in an IndexPreTransform with\n"
+		"given parameters. This is a way to set the nprobe and get\n"
+		"statdistics in a thread-safe way.\n"
+		"\n"
+		"Optionally returns (if non-nullptr):\n"
+		"- nb_dis: number of distances computed\n"
+		"- ms_per_stage: [0]: preprocessing time\n"
+		"                [1]: coarse quantization,\n"
+		"                [2]: list scanning\n"
+		""},
+	 { "range_search_with_parameters", _wrap_range_search_with_parameters, METH_VARARGS, " same as search_with_parameters but for range search"},
+	 { "ScalarQuantizer_qtype_set", _wrap_ScalarQuantizer_qtype_set, METH_VARARGS, NULL},
+	 { "ScalarQuantizer_qtype_get", _wrap_ScalarQuantizer_qtype_get, METH_O, NULL},
+	 { "ScalarQuantizer_rangestat_set", _wrap_ScalarQuantizer_rangestat_set, METH_VARARGS, NULL},
+	 { "ScalarQuantizer_rangestat_get", _wrap_ScalarQuantizer_rangestat_get, METH_O, NULL},
+	 { "ScalarQuantizer_rangestat_arg_set", _wrap_ScalarQuantizer_rangestat_arg_set, METH_VARARGS, NULL},
+	 { "ScalarQuantizer_rangestat_arg_get", _wrap_ScalarQuantizer_rangestat_arg_get, METH_O, NULL},
+	 { "ScalarQuantizer_d_set", _wrap_ScalarQuantizer_d_set, METH_VARARGS, " dimension of input vectors"},
+	 { "ScalarQuantizer_d_get", _wrap_ScalarQuantizer_d_get, METH_O, " dimension of input vectors"},
+	 { "ScalarQuantizer_bits_set", _wrap_ScalarQuantizer_bits_set, METH_VARARGS, " bits per scalar code"},
+	 { "ScalarQuantizer_bits_get", _wrap_ScalarQuantizer_bits_get, METH_O, " bits per scalar code"},
+	 { "ScalarQuantizer_code_size_set", _wrap_ScalarQuantizer_code_size_set, METH_VARARGS, " bytes per vector"},
+	 { "ScalarQuantizer_code_size_get", _wrap_ScalarQuantizer_code_size_get, METH_O, " bytes per vector"},
+	 { "ScalarQuantizer_trained_set", _wrap_ScalarQuantizer_trained_set, METH_VARARGS, " trained values (including the range)"},
+	 { "ScalarQuantizer_trained_get", _wrap_ScalarQuantizer_trained_get, METH_O, " trained values (including the range)"},
+	 { "new_ScalarQuantizer", _wrap_new_ScalarQuantizer, METH_VARARGS, NULL},
+	 { "ScalarQuantizer_set_derived_sizes", _wrap_ScalarQuantizer_set_derived_sizes, METH_O, " updates internal values based on qtype and d"},
+	 { "ScalarQuantizer_train", _wrap_ScalarQuantizer_train, METH_VARARGS, NULL},
+	 { "ScalarQuantizer_train_residual", _wrap_ScalarQuantizer_train_residual, METH_VARARGS, " Used by an IVF index to train based on the residuals"},
+	 { "ScalarQuantizer_compute_codes", _wrap_ScalarQuantizer_compute_codes, METH_VARARGS, "\n"
+		" Encode a set of vectors\n"
+		"\n"
+		":type x: float\n"
+		":param x:      vectors to encode, size n * d\n"
+		":type codes: uint8_t\n"
+		":param codes:  output codes, size n * code_size\n"
+		""},
+	 { "ScalarQuantizer_decode", _wrap_ScalarQuantizer_decode, METH_VARARGS, "\n"
+		" Decode a set of vectors\n"
+		"\n"
+		":param codes:  codes to decode, size n * code_size\n"
+		":type x: float\n"
+		":param x:      output vectors, size n * d\n"
+		""},
+	 { "ScalarQuantizer_select_quantizer", _wrap_ScalarQuantizer_select_quantizer, METH_O, NULL},
+	 { "ScalarQuantizer_get_distance_computer", _wrap_ScalarQuantizer_get_distance_computer, METH_VARARGS, NULL},
+	 { "ScalarQuantizer_select_InvertedListScanner", _wrap_ScalarQuantizer_select_InvertedListScanner, METH_VARARGS, NULL},
+	 { "delete_ScalarQuantizer", _wrap_delete_ScalarQuantizer, METH_O, NULL},
+	 { "ScalarQuantizer_swigregister", ScalarQuantizer_swigregister, METH_O, NULL},
+	 { "ScalarQuantizer_swiginit", ScalarQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "IndexScalarQuantizer_sq_set", _wrap_IndexScalarQuantizer_sq_set, METH_VARARGS, " Used to encode the vectors"},
+	 { "IndexScalarQuantizer_sq_get", _wrap_IndexScalarQuantizer_sq_get, METH_O, " Used to encode the vectors"},
+	 { "new_IndexScalarQuantizer", _wrap_new_IndexScalarQuantizer, METH_VARARGS, "\n"
+		" Constructor.\n"
+		"\n"
+		":type d: int\n"
+		":param d:      dimensionality of the input vectors\n"
+		":param M:      number of subquantizers\n"
+		":param nbits:  number of bit per subvector index\n"
+		""},
+	 { "IndexScalarQuantizer_train", _wrap_IndexScalarQuantizer_train, METH_VARARGS, NULL},
+	 { "IndexScalarQuantizer_search", _wrap_IndexScalarQuantizer_search, METH_VARARGS, NULL},
+	 { "IndexScalarQuantizer_get_distance_computer", _wrap_IndexScalarQuantizer_get_distance_computer, METH_O, NULL},
+	 { "IndexScalarQuantizer_sa_encode", _wrap_IndexScalarQuantizer_sa_encode, METH_VARARGS, NULL},
+	 { "IndexScalarQuantizer_sa_decode", _wrap_IndexScalarQuantizer_sa_decode, METH_VARARGS, NULL},
+	 { "delete_IndexScalarQuantizer", _wrap_delete_IndexScalarQuantizer, METH_O, NULL},
+	 { "IndexScalarQuantizer_swigregister", IndexScalarQuantizer_swigregister, METH_O, NULL},
+	 { "IndexScalarQuantizer_swiginit", IndexScalarQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "IndexIVFScalarQuantizer_sq_set", _wrap_IndexIVFScalarQuantizer_sq_set, METH_VARARGS, NULL},
+	 { "IndexIVFScalarQuantizer_sq_get", _wrap_IndexIVFScalarQuantizer_sq_get, METH_O, NULL},
+	 { "IndexIVFScalarQuantizer_by_residual_set", _wrap_IndexIVFScalarQuantizer_by_residual_set, METH_VARARGS, NULL},
+	 { "IndexIVFScalarQuantizer_by_residual_get", _wrap_IndexIVFScalarQuantizer_by_residual_get, METH_O, NULL},
+	 { "new_IndexIVFScalarQuantizer", _wrap_new_IndexIVFScalarQuantizer, METH_VARARGS, NULL},
+	 { "IndexIVFScalarQuantizer_train_residual", _wrap_IndexIVFScalarQuantizer_train_residual, METH_VARARGS, NULL},
+	 { "IndexIVFScalarQuantizer_encode_vectors", _wrap_IndexIVFScalarQuantizer_encode_vectors, METH_VARARGS, NULL},
+	 { "IndexIVFScalarQuantizer_add_core", _wrap_IndexIVFScalarQuantizer_add_core, METH_VARARGS, NULL},
+	 { "IndexIVFScalarQuantizer_get_InvertedListScanner", _wrap_IndexIVFScalarQuantizer_get_InvertedListScanner, METH_VARARGS, NULL},
+	 { "IndexIVFScalarQuantizer_reconstruct_from_offset", _wrap_IndexIVFScalarQuantizer_reconstruct_from_offset, METH_VARARGS, NULL},
+	 { "IndexIVFScalarQuantizer_sa_decode", _wrap_IndexIVFScalarQuantizer_sa_decode, METH_VARARGS, NULL},
+	 { "delete_IndexIVFScalarQuantizer", _wrap_delete_IndexIVFScalarQuantizer, METH_O, NULL},
+	 { "IndexIVFScalarQuantizer_swigregister", IndexIVFScalarQuantizer_swigregister, METH_O, NULL},
+	 { "IndexIVFScalarQuantizer_swiginit", IndexIVFScalarQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "IndexIVFSpectralHash_vt_set", _wrap_IndexIVFSpectralHash_vt_set, METH_VARARGS, " transformation from d to nbit dim"},
+	 { "IndexIVFSpectralHash_vt_get", _wrap_IndexIVFSpectralHash_vt_get, METH_O, " transformation from d to nbit dim"},
+	 { "IndexIVFSpectralHash_own_fields_set", _wrap_IndexIVFSpectralHash_own_fields_set, METH_VARARGS, " own the vt"},
+	 { "IndexIVFSpectralHash_own_fields_get", _wrap_IndexIVFSpectralHash_own_fields_get, METH_O, " own the vt"},
+	 { "IndexIVFSpectralHash_nbit_set", _wrap_IndexIVFSpectralHash_nbit_set, METH_VARARGS, " nb of bits of the binary signature"},
+	 { "IndexIVFSpectralHash_nbit_get", _wrap_IndexIVFSpectralHash_nbit_get, METH_O, " nb of bits of the binary signature"},
+	 { "IndexIVFSpectralHash_period_set", _wrap_IndexIVFSpectralHash_period_set, METH_VARARGS, " interval size for 0s and 1s"},
+	 { "IndexIVFSpectralHash_period_get", _wrap_IndexIVFSpectralHash_period_get, METH_O, " interval size for 0s and 1s"},
+	 { "IndexIVFSpectralHash_threshold_type_set", _wrap_IndexIVFSpectralHash_threshold_type_set, METH_VARARGS, NULL},
+	 { "IndexIVFSpectralHash_threshold_type_get", _wrap_IndexIVFSpectralHash_threshold_type_get, METH_O, NULL},
+	 { "IndexIVFSpectralHash_trained_set", _wrap_IndexIVFSpectralHash_trained_set, METH_VARARGS, "\n"
+		"Trained threshold.\n"
+		"size nlist * nbit or 0 if Thresh_global\n"
+		""},
+	 { "IndexIVFSpectralHash_trained_get", _wrap_IndexIVFSpectralHash_trained_get, METH_O, "\n"
+		"Trained threshold.\n"
+		"size nlist * nbit or 0 if Thresh_global\n"
+		""},
+	 { "new_IndexIVFSpectralHash", _wrap_new_IndexIVFSpectralHash, METH_VARARGS, NULL},
+	 { "IndexIVFSpectralHash_train_residual", _wrap_IndexIVFSpectralHash_train_residual, METH_VARARGS, NULL},
+	 { "IndexIVFSpectralHash_encode_vectors", _wrap_IndexIVFSpectralHash_encode_vectors, METH_VARARGS, NULL},
+	 { "IndexIVFSpectralHash_get_InvertedListScanner", _wrap_IndexIVFSpectralHash_get_InvertedListScanner, METH_VARARGS, NULL},
+	 { "IndexIVFSpectralHash_replace_vt", _wrap_IndexIVFSpectralHash_replace_vt, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		" replace the vector transform for an empty (and possibly untrained) index\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		" convenience function to get the VT from an index constucted by an\n"
+		"index_factory (should end in \"LSH\")\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 3:*\n"
+		" convenience function to get the VT from an index constucted by an\n"
+		"index_factory (should end in \"LSH\")\n"
+		""},
+	 { "delete_IndexIVFSpectralHash", _wrap_delete_IndexIVFSpectralHash, METH_O, NULL},
+	 { "IndexIVFSpectralHash_swigregister", IndexIVFSpectralHash_swigregister, METH_O, NULL},
+	 { "IndexIVFSpectralHash_swiginit", IndexIVFSpectralHash_swiginit, METH_VARARGS, NULL},
+	 { "IndexIVFAdditiveQuantizer_aq_set", _wrap_IndexIVFAdditiveQuantizer_aq_set, METH_VARARGS, NULL},
+	 { "IndexIVFAdditiveQuantizer_aq_get", _wrap_IndexIVFAdditiveQuantizer_aq_get, METH_O, NULL},
+	 { "IndexIVFAdditiveQuantizer_by_residual_set", _wrap_IndexIVFAdditiveQuantizer_by_residual_set, METH_VARARGS, NULL},
+	 { "IndexIVFAdditiveQuantizer_by_residual_get", _wrap_IndexIVFAdditiveQuantizer_by_residual_get, METH_O, NULL},
+	 { "IndexIVFAdditiveQuantizer_use_precomputed_table_set", _wrap_IndexIVFAdditiveQuantizer_use_precomputed_table_set, METH_VARARGS, NULL},
+	 { "IndexIVFAdditiveQuantizer_use_precomputed_table_get", _wrap_IndexIVFAdditiveQuantizer_use_precomputed_table_get, METH_O, NULL},
+	 { "new_IndexIVFAdditiveQuantizer", _wrap_new_IndexIVFAdditiveQuantizer, METH_VARARGS, NULL},
+	 { "IndexIVFAdditiveQuantizer_train_residual", _wrap_IndexIVFAdditiveQuantizer_train_residual, METH_VARARGS, NULL},
+	 { "IndexIVFAdditiveQuantizer_encode_vectors", _wrap_IndexIVFAdditiveQuantizer_encode_vectors, METH_VARARGS, NULL},
+	 { "IndexIVFAdditiveQuantizer_get_InvertedListScanner", _wrap_IndexIVFAdditiveQuantizer_get_InvertedListScanner, METH_VARARGS, NULL},
+	 { "delete_IndexIVFAdditiveQuantizer", _wrap_delete_IndexIVFAdditiveQuantizer, METH_O, NULL},
+	 { "IndexIVFAdditiveQuantizer_swigregister", IndexIVFAdditiveQuantizer_swigregister, METH_O, NULL},
+	 { "IndexIVFAdditiveQuantizer_swiginit", IndexIVFAdditiveQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "IndexIVFResidualQuantizer_rq_set", _wrap_IndexIVFResidualQuantizer_rq_set, METH_VARARGS, " The residual quantizer used to encode the vectors"},
+	 { "IndexIVFResidualQuantizer_rq_get", _wrap_IndexIVFResidualQuantizer_rq_get, METH_O, " The residual quantizer used to encode the vectors"},
+	 { "new_IndexIVFResidualQuantizer", _wrap_new_IndexIVFResidualQuantizer, METH_VARARGS, NULL},
+	 { "delete_IndexIVFResidualQuantizer", _wrap_delete_IndexIVFResidualQuantizer, METH_O, NULL},
+	 { "IndexIVFResidualQuantizer_swigregister", IndexIVFResidualQuantizer_swigregister, METH_O, NULL},
+	 { "IndexIVFResidualQuantizer_swiginit", IndexIVFResidualQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "IndexIVFLocalSearchQuantizer_lsq_set", _wrap_IndexIVFLocalSearchQuantizer_lsq_set, METH_VARARGS, " The LSQ quantizer used to encode the vectors"},
+	 { "IndexIVFLocalSearchQuantizer_lsq_get", _wrap_IndexIVFLocalSearchQuantizer_lsq_get, METH_O, " The LSQ quantizer used to encode the vectors"},
+	 { "new_IndexIVFLocalSearchQuantizer", _wrap_new_IndexIVFLocalSearchQuantizer, METH_VARARGS, "\n"
+		" Constructor.\n"
+		"\n"
+		":type d: int\n"
+		":param d:      dimensionality of the input vectors\n"
+		":type M: int\n"
+		":param M:      number of subquantizers\n"
+		":type nbits: int\n"
+		":param nbits:  number of bit per subvector index\n"
+		""},
+	 { "delete_IndexIVFLocalSearchQuantizer", _wrap_delete_IndexIVFLocalSearchQuantizer, METH_O, NULL},
+	 { "IndexIVFLocalSearchQuantizer_swigregister", IndexIVFLocalSearchQuantizer_swigregister, METH_O, NULL},
+	 { "IndexIVFLocalSearchQuantizer_swiginit", IndexIVFLocalSearchQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "HNSW_assign_probas_set", _wrap_HNSW_assign_probas_set, METH_VARARGS, " assignment probability to each layer (sum=1)"},
+	 { "HNSW_assign_probas_get", _wrap_HNSW_assign_probas_get, METH_O, " assignment probability to each layer (sum=1)"},
+	 { "HNSW_cum_nneighbor_per_level_set", _wrap_HNSW_cum_nneighbor_per_level_set, METH_VARARGS, "\n"
+		"number of neighbors stored per layer (cumulative), should not\n"
+		"be changed after first add\n"
+		""},
+	 { "HNSW_cum_nneighbor_per_level_get", _wrap_HNSW_cum_nneighbor_per_level_get, METH_O, "\n"
+		"number of neighbors stored per layer (cumulative), should not\n"
+		"be changed after first add\n"
+		""},
+	 { "HNSW_levels_set", _wrap_HNSW_levels_set, METH_VARARGS, " level of each vector (base level = 1), size = ntotal"},
+	 { "HNSW_levels_get", _wrap_HNSW_levels_get, METH_O, " level of each vector (base level = 1), size = ntotal"},
+	 { "HNSW_offsets_set", _wrap_HNSW_offsets_set, METH_VARARGS, "\n"
+		"offsets[i] is the offset in the neighbors array where vector i is stored\n"
+		"size ntotal + 1\n"
+		""},
+	 { "HNSW_offsets_get", _wrap_HNSW_offsets_get, METH_O, "\n"
+		"offsets[i] is the offset in the neighbors array where vector i is stored\n"
+		"size ntotal + 1\n"
+		""},
+	 { "HNSW_neighbors_set", _wrap_HNSW_neighbors_set, METH_VARARGS, "\n"
+		"neighbors[offsets[i]:offsets[i+1]] is the list of neighbors of vector i\n"
+		"for all levels. this is where all storage goes.\n"
+		""},
+	 { "HNSW_neighbors_get", _wrap_HNSW_neighbors_get, METH_O, "\n"
+		"neighbors[offsets[i]:offsets[i+1]] is the list of neighbors of vector i\n"
+		"for all levels. this is where all storage goes.\n"
+		""},
+	 { "HNSW_entry_point_set", _wrap_HNSW_entry_point_set, METH_VARARGS, "\n"
+		"entry point in the search structure (one of the points with maximum\n"
+		"level\n"
+		""},
+	 { "HNSW_entry_point_get", _wrap_HNSW_entry_point_get, METH_O, "\n"
+		"entry point in the search structure (one of the points with maximum\n"
+		"level\n"
+		""},
+	 { "HNSW_rng_set", _wrap_HNSW_rng_set, METH_VARARGS, NULL},
+	 { "HNSW_rng_get", _wrap_HNSW_rng_get, METH_O, NULL},
+	 { "HNSW_max_level_set", _wrap_HNSW_max_level_set, METH_VARARGS, " maximum level"},
+	 { "HNSW_max_level_get", _wrap_HNSW_max_level_get, METH_O, " maximum level"},
+	 { "HNSW_efConstruction_set", _wrap_HNSW_efConstruction_set, METH_VARARGS, " expansion factor at construction time"},
+	 { "HNSW_efConstruction_get", _wrap_HNSW_efConstruction_get, METH_O, " expansion factor at construction time"},
+	 { "HNSW_efSearch_set", _wrap_HNSW_efSearch_set, METH_VARARGS, " expansion factor at search time"},
+	 { "HNSW_efSearch_get", _wrap_HNSW_efSearch_get, METH_O, " expansion factor at search time"},
+	 { "HNSW_check_relative_distance_set", _wrap_HNSW_check_relative_distance_set, METH_VARARGS, "\n"
+		"during search: do we check whether the next best distance is good\n"
+		"enough?\n"
+		""},
+	 { "HNSW_check_relative_distance_get", _wrap_HNSW_check_relative_distance_get, METH_O, "\n"
+		"during search: do we check whether the next best distance is good\n"
+		"enough?\n"
+		""},
+	 { "HNSW_upper_beam_set", _wrap_HNSW_upper_beam_set, METH_VARARGS, " number of entry points in levels > 0."},
+	 { "HNSW_upper_beam_get", _wrap_HNSW_upper_beam_get, METH_O, " number of entry points in levels > 0."},
+	 { "HNSW_search_bounded_queue_set", _wrap_HNSW_search_bounded_queue_set, METH_VARARGS, " use bounded queue during exploration"},
+	 { "HNSW_search_bounded_queue_get", _wrap_HNSW_search_bounded_queue_get, METH_O, " use bounded queue during exploration"},
+	 { "HNSW_set_default_probas", _wrap_HNSW_set_default_probas, METH_VARARGS, "\n"
+		"initialize the assign_probas and cum_nneighbor_per_level to\n"
+		"have 2*M links on level 0 and M links on levels > 0\n"
+		""},
+	 { "HNSW_set_nb_neighbors", _wrap_HNSW_set_nb_neighbors, METH_VARARGS, " set nb of neighbors for this level (before adding anything)"},
+	 { "HNSW_nb_neighbors", _wrap_HNSW_nb_neighbors, METH_VARARGS, " nb of neighbors for this level"},
+	 { "HNSW_cum_nb_neighbors", _wrap_HNSW_cum_nb_neighbors, METH_VARARGS, " cumumlative nb up to (and excluding) this level"},
+	 { "HNSW_neighbor_range", _wrap_HNSW_neighbor_range, METH_VARARGS, " range of entries in the neighbors table of vertex no at layer_no"},
+	 { "new_HNSW", _wrap_new_HNSW, METH_VARARGS, " only mandatory parameter: nb of neighbors"},
+	 { "HNSW_random_level", _wrap_HNSW_random_level, METH_O, " pick a random level for a new point"},
+	 { "HNSW_fill_with_random_links", _wrap_HNSW_fill_with_random_links, METH_VARARGS, " add n random levels to table (for debugging...)"},
+	 { "HNSW_add_links_starting_from", _wrap_HNSW_add_links_starting_from, METH_VARARGS, NULL},
+	 { "HNSW_add_with_locks", _wrap_HNSW_add_with_locks, METH_VARARGS, "\n"
+		" add point pt_id on all levels <= pt_level and build the link\n"
+		"structure for them.\n"
+		""},
+	 { "HNSW_search_from_candidates", _wrap_HNSW_search_from_candidates, METH_VARARGS, NULL},
+	 { "HNSW_search_from_candidate_unbounded", _wrap_HNSW_search_from_candidate_unbounded, METH_VARARGS, NULL},
+	 { "HNSW_search", _wrap_HNSW_search, METH_VARARGS, " search interface"},
+	 { "HNSW_reset", _wrap_HNSW_reset, METH_O, NULL},
+	 { "HNSW_clear_neighbor_tables", _wrap_HNSW_clear_neighbor_tables, METH_VARARGS, NULL},
+	 { "HNSW_print_neighbor_stats", _wrap_HNSW_print_neighbor_stats, METH_VARARGS, NULL},
+	 { "HNSW_prepare_level_tab", _wrap_HNSW_prepare_level_tab, METH_VARARGS, NULL},
+	 { "HNSW_shrink_neighbor_list", _wrap_HNSW_shrink_neighbor_list, METH_VARARGS, NULL},
+	 { "delete_HNSW", _wrap_delete_HNSW, METH_O, NULL},
+	 { "HNSW_swigregister", HNSW_swigregister, METH_O, NULL},
+	 { "HNSW_swiginit", HNSW_swiginit, METH_VARARGS, NULL},
+	 { "HNSWStats_n1_set", _wrap_HNSWStats_n1_set, METH_VARARGS, NULL},
+	 { "HNSWStats_n1_get", _wrap_HNSWStats_n1_get, METH_O, NULL},
+	 { "HNSWStats_n2_set", _wrap_HNSWStats_n2_set, METH_VARARGS, NULL},
+	 { "HNSWStats_n2_get", _wrap_HNSWStats_n2_get, METH_O, NULL},
+	 { "HNSWStats_n3_set", _wrap_HNSWStats_n3_set, METH_VARARGS, NULL},
+	 { "HNSWStats_n3_get", _wrap_HNSWStats_n3_get, METH_O, NULL},
+	 { "HNSWStats_ndis_set", _wrap_HNSWStats_ndis_set, METH_VARARGS, NULL},
+	 { "HNSWStats_ndis_get", _wrap_HNSWStats_ndis_get, METH_O, NULL},
+	 { "HNSWStats_nreorder_set", _wrap_HNSWStats_nreorder_set, METH_VARARGS, NULL},
+	 { "HNSWStats_nreorder_get", _wrap_HNSWStats_nreorder_get, METH_O, NULL},
+	 { "new_HNSWStats", _wrap_new_HNSWStats, METH_VARARGS, NULL},
+	 { "HNSWStats_reset", _wrap_HNSWStats_reset, METH_O, NULL},
+	 { "HNSWStats_combine", _wrap_HNSWStats_combine, METH_VARARGS, NULL},
+	 { "delete_HNSWStats", _wrap_delete_HNSWStats, METH_O, NULL},
+	 { "HNSWStats_swigregister", HNSWStats_swigregister, METH_O, NULL},
+	 { "HNSWStats_swiginit", HNSWStats_swiginit, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_index_get", _wrap_ReconstructFromNeighbors_index_get, METH_O, NULL},
+	 { "ReconstructFromNeighbors_M_set", _wrap_ReconstructFromNeighbors_M_set, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_M_get", _wrap_ReconstructFromNeighbors_M_get, METH_O, NULL},
+	 { "ReconstructFromNeighbors_k_set", _wrap_ReconstructFromNeighbors_k_set, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_k_get", _wrap_ReconstructFromNeighbors_k_get, METH_O, NULL},
+	 { "ReconstructFromNeighbors_nsq_set", _wrap_ReconstructFromNeighbors_nsq_set, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_nsq_get", _wrap_ReconstructFromNeighbors_nsq_get, METH_O, NULL},
+	 { "ReconstructFromNeighbors_code_size_set", _wrap_ReconstructFromNeighbors_code_size_set, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_code_size_get", _wrap_ReconstructFromNeighbors_code_size_get, METH_O, NULL},
+	 { "ReconstructFromNeighbors_k_reorder_set", _wrap_ReconstructFromNeighbors_k_reorder_set, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_k_reorder_get", _wrap_ReconstructFromNeighbors_k_reorder_get, METH_O, NULL},
+	 { "ReconstructFromNeighbors_codebook_set", _wrap_ReconstructFromNeighbors_codebook_set, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_codebook_get", _wrap_ReconstructFromNeighbors_codebook_get, METH_O, NULL},
+	 { "ReconstructFromNeighbors_codes_set", _wrap_ReconstructFromNeighbors_codes_set, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_codes_get", _wrap_ReconstructFromNeighbors_codes_get, METH_O, NULL},
+	 { "ReconstructFromNeighbors_ntotal_set", _wrap_ReconstructFromNeighbors_ntotal_set, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_ntotal_get", _wrap_ReconstructFromNeighbors_ntotal_get, METH_O, NULL},
+	 { "ReconstructFromNeighbors_d_set", _wrap_ReconstructFromNeighbors_d_set, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_d_get", _wrap_ReconstructFromNeighbors_d_get, METH_O, NULL},
+	 { "ReconstructFromNeighbors_dsub_set", _wrap_ReconstructFromNeighbors_dsub_set, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_dsub_get", _wrap_ReconstructFromNeighbors_dsub_get, METH_O, NULL},
+	 { "new_ReconstructFromNeighbors", _wrap_new_ReconstructFromNeighbors, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_add_codes", _wrap_ReconstructFromNeighbors_add_codes, METH_VARARGS, "\n"
+		"codes must be added in the correct order and the IndexHNSW\n"
+		"must be populated and sorted\n"
+		""},
+	 { "ReconstructFromNeighbors_compute_distances", _wrap_ReconstructFromNeighbors_compute_distances, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_estimate_code", _wrap_ReconstructFromNeighbors_estimate_code, METH_VARARGS, " called by add_codes"},
+	 { "ReconstructFromNeighbors_reconstruct", _wrap_ReconstructFromNeighbors_reconstruct, METH_VARARGS, " called by compute_distances"},
+	 { "ReconstructFromNeighbors_reconstruct_n", _wrap_ReconstructFromNeighbors_reconstruct_n, METH_VARARGS, NULL},
+	 { "ReconstructFromNeighbors_get_neighbor_table", _wrap_ReconstructFromNeighbors_get_neighbor_table, METH_VARARGS, " get the M+1 -by-d table for neighbor coordinates for vector i"},
+	 { "delete_ReconstructFromNeighbors", _wrap_delete_ReconstructFromNeighbors, METH_O, NULL},
+	 { "ReconstructFromNeighbors_swigregister", ReconstructFromNeighbors_swigregister, METH_O, NULL},
+	 { "ReconstructFromNeighbors_swiginit", ReconstructFromNeighbors_swiginit, METH_VARARGS, NULL},
+	 { "IndexHNSW_hnsw_set", _wrap_IndexHNSW_hnsw_set, METH_VARARGS, NULL},
+	 { "IndexHNSW_hnsw_get", _wrap_IndexHNSW_hnsw_get, METH_O, NULL},
+	 { "IndexHNSW_own_fields_set", _wrap_IndexHNSW_own_fields_set, METH_VARARGS, NULL},
+	 { "IndexHNSW_own_fields_get", _wrap_IndexHNSW_own_fields_get, METH_O, NULL},
+	 { "IndexHNSW_storage_set", _wrap_IndexHNSW_storage_set, METH_VARARGS, NULL},
+	 { "IndexHNSW_storage_get", _wrap_IndexHNSW_storage_get, METH_O, NULL},
+	 { "IndexHNSW_reconstruct_from_neighbors_set", _wrap_IndexHNSW_reconstruct_from_neighbors_set, METH_VARARGS, NULL},
+	 { "IndexHNSW_reconstruct_from_neighbors_get", _wrap_IndexHNSW_reconstruct_from_neighbors_get, METH_O, NULL},
+	 { "new_IndexHNSW", _wrap_new_IndexHNSW, METH_VARARGS, NULL},
+	 { "delete_IndexHNSW", _wrap_delete_IndexHNSW, METH_O, NULL},
+	 { "IndexHNSW_add", _wrap_IndexHNSW_add, METH_VARARGS, NULL},
+	 { "IndexHNSW_train", _wrap_IndexHNSW_train, METH_VARARGS, " Trains the storage if needed"},
+	 { "IndexHNSW_search", _wrap_IndexHNSW_search, METH_VARARGS, " entry point for search"},
+	 { "IndexHNSW_reconstruct", _wrap_IndexHNSW_reconstruct, METH_VARARGS, NULL},
+	 { "IndexHNSW_reset", _wrap_IndexHNSW_reset, METH_O, NULL},
+	 { "IndexHNSW_shrink_level_0_neighbors", _wrap_IndexHNSW_shrink_level_0_neighbors, METH_VARARGS, NULL},
+	 { "IndexHNSW_search_level_0", _wrap_IndexHNSW_search_level_0, METH_VARARGS, "\n"
+		" Perform search only on level 0, given the starting points for\n"
+		"each vertex.\n"
+		"\n"
+		":type search_type: int, optional\n"
+		":param search_type: 1:perform one search per nprobe, 2: enqueue\n"
+		"                       all entry points\n"
+		""},
+	 { "IndexHNSW_init_level_0_from_knngraph", _wrap_IndexHNSW_init_level_0_from_knngraph, METH_VARARGS, " alternative graph building"},
+	 { "IndexHNSW_init_level_0_from_entry_points", _wrap_IndexHNSW_init_level_0_from_entry_points, METH_VARARGS, " alternative graph building"},
+	 { "IndexHNSW_reorder_links", _wrap_IndexHNSW_reorder_links, METH_O, NULL},
+	 { "IndexHNSW_link_singletons", _wrap_IndexHNSW_link_singletons, METH_O, NULL},
+	 { "IndexHNSW_swigregister", IndexHNSW_swigregister, METH_O, NULL},
+	 { "IndexHNSW_swiginit", IndexHNSW_swiginit, METH_VARARGS, NULL},
+	 { "new_IndexHNSWFlat", _wrap_new_IndexHNSWFlat, METH_VARARGS, NULL},
+	 { "delete_IndexHNSWFlat", _wrap_delete_IndexHNSWFlat, METH_O, NULL},
+	 { "IndexHNSWFlat_swigregister", IndexHNSWFlat_swigregister, METH_O, NULL},
+	 { "IndexHNSWFlat_swiginit", IndexHNSWFlat_swiginit, METH_VARARGS, NULL},
+	 { "new_IndexHNSWPQ", _wrap_new_IndexHNSWPQ, METH_VARARGS, NULL},
+	 { "IndexHNSWPQ_train", _wrap_IndexHNSWPQ_train, METH_VARARGS, NULL},
+	 { "delete_IndexHNSWPQ", _wrap_delete_IndexHNSWPQ, METH_O, NULL},
+	 { "IndexHNSWPQ_swigregister", IndexHNSWPQ_swigregister, METH_O, NULL},
+	 { "IndexHNSWPQ_swiginit", IndexHNSWPQ_swiginit, METH_VARARGS, NULL},
+	 { "new_IndexHNSWSQ", _wrap_new_IndexHNSWSQ, METH_VARARGS, NULL},
+	 { "delete_IndexHNSWSQ", _wrap_delete_IndexHNSWSQ, METH_O, NULL},
+	 { "IndexHNSWSQ_swigregister", IndexHNSWSQ_swigregister, METH_O, NULL},
+	 { "IndexHNSWSQ_swiginit", IndexHNSWSQ_swiginit, METH_VARARGS, NULL},
+	 { "new_IndexHNSW2Level", _wrap_new_IndexHNSW2Level, METH_VARARGS, NULL},
+	 { "IndexHNSW2Level_flip_to_ivf", _wrap_IndexHNSW2Level_flip_to_ivf, METH_O, NULL},
+	 { "IndexHNSW2Level_search", _wrap_IndexHNSW2Level_search, METH_VARARGS, " entry point for search"},
+	 { "delete_IndexHNSW2Level", _wrap_delete_IndexHNSW2Level, METH_O, NULL},
+	 { "IndexHNSW2Level_swigregister", IndexHNSW2Level_swigregister, METH_O, NULL},
+	 { "IndexHNSW2Level_swiginit", IndexHNSW2Level_swiginit, METH_VARARGS, NULL},
+	 { "smawk", _wrap_smawk, METH_VARARGS, "\n"
+		" SMAWK algorithm. Find the row minima of a monotone matrix.\n"
+		"\n"
+		"Expose this for testing.\n"
+		"\n"
+		":type nrows: int\n"
+		":param nrows:    number of rows\n"
+		":type ncols: int\n"
+		":param ncols:    number of columns\n"
+		":type x: float\n"
+		":param x:        input matrix, size (nrows, ncols)\n"
+		":type argmins: int\n"
+		":param argmins:  argmin of each row\n"
+		""},
+	 { "kmeans1d", _wrap_kmeans1d, METH_VARARGS, "\n"
+		" Exact 1D K-Means by dynamic programming\n"
+		"\n"
+		"From  \"Fast Exact k-Means, k-Medians and Bregman Divergence Clustering in 1D\"\n"
+		"Allan Grønlund, Kasper Green Larsen, Alexander Mathiasen, Jesper Sindahl\n"
+		"Nielsen, Stefan Schneider, Mingzhou Song, ArXiV'17\n"
+		"\n"
+		"Section 2.2\n"
+		"\n"
+		"https://arxiv.org/abs/1701.07204\n"
+		"\n"
+		":type x: float\n"
+		":param x:          input 1D array\n"
+		":type n: int\n"
+		":param n:          input array length\n"
+		":type nclusters: int\n"
+		":param nclusters:  number of clusters\n"
+		":type centroids: float\n"
+		":param centroids:  output centroids, size nclusters\n"
+		":rtype: float\n"
+		":return: imbalancce factor\n"
+		""},
+	 { "Neighbor_id_set", _wrap_Neighbor_id_set, METH_VARARGS, NULL},
+	 { "Neighbor_id_get", _wrap_Neighbor_id_get, METH_O, NULL},
+	 { "Neighbor_distance_set", _wrap_Neighbor_distance_set, METH_VARARGS, NULL},
+	 { "Neighbor_distance_get", _wrap_Neighbor_distance_get, METH_O, NULL},
+	 { "Neighbor_flag_set", _wrap_Neighbor_flag_set, METH_VARARGS, NULL},
+	 { "Neighbor_flag_get", _wrap_Neighbor_flag_get, METH_O, NULL},
+	 { "new_Neighbor", _wrap_new_Neighbor, METH_VARARGS, NULL},
+	 { "Neighbor___lt__", _wrap_Neighbor___lt__, METH_VARARGS, NULL},
+	 { "delete_Neighbor", _wrap_delete_Neighbor, METH_O, NULL},
+	 { "Neighbor_swigregister", Neighbor_swigregister, METH_O, NULL},
+	 { "Neighbor_swiginit", Neighbor_swiginit, METH_VARARGS, NULL},
+	 { "Nhood_pool_set", _wrap_Nhood_pool_set, METH_VARARGS, NULL},
+	 { "Nhood_pool_get", _wrap_Nhood_pool_get, METH_O, NULL},
+	 { "Nhood_M_set", _wrap_Nhood_M_set, METH_VARARGS, NULL},
+	 { "Nhood_M_get", _wrap_Nhood_M_get, METH_O, NULL},
+	 { "Nhood_nn_old_set", _wrap_Nhood_nn_old_set, METH_VARARGS, NULL},
+	 { "Nhood_nn_old_get", _wrap_Nhood_nn_old_get, METH_O, NULL},
+	 { "Nhood_nn_new_set", _wrap_Nhood_nn_new_set, METH_VARARGS, NULL},
+	 { "Nhood_nn_new_get", _wrap_Nhood_nn_new_get, METH_O, NULL},
+	 { "Nhood_rnn_old_set", _wrap_Nhood_rnn_old_set, METH_VARARGS, NULL},
+	 { "Nhood_rnn_old_get", _wrap_Nhood_rnn_old_get, METH_O, NULL},
+	 { "Nhood_rnn_new_set", _wrap_Nhood_rnn_new_set, METH_VARARGS, NULL},
+	 { "Nhood_rnn_new_get", _wrap_Nhood_rnn_new_get, METH_O, NULL},
+	 { "new_Nhood", _wrap_new_Nhood, METH_VARARGS, NULL},
+	 { "Nhood_insert", _wrap_Nhood_insert, METH_VARARGS, NULL},
+	 { "delete_Nhood", _wrap_delete_Nhood, METH_O, NULL},
+	 { "Nhood_swigregister", Nhood_swigregister, METH_O, NULL},
+	 { "Nhood_swiginit", Nhood_swiginit, METH_VARARGS, NULL},
+	 { "new_NNDescent", _wrap_new_NNDescent, METH_VARARGS, NULL},
+	 { "delete_NNDescent", _wrap_delete_NNDescent, METH_O, NULL},
+	 { "NNDescent_build", _wrap_NNDescent_build, METH_VARARGS, NULL},
+	 { "NNDescent_search", _wrap_NNDescent_search, METH_VARARGS, NULL},
+	 { "NNDescent_reset", _wrap_NNDescent_reset, METH_O, NULL},
+	 { "NNDescent_init_graph", _wrap_NNDescent_init_graph, METH_VARARGS, " Initialize the KNN graph randomly"},
+	 { "NNDescent_nndescent", _wrap_NNDescent_nndescent, METH_VARARGS, " Perform NNDescent algorithm"},
+	 { "NNDescent_join", _wrap_NNDescent_join, METH_VARARGS, " Perform local join on each node"},
+	 { "NNDescent_update", _wrap_NNDescent_update, METH_O, " Sample new neighbors for each node to peform local join later"},
+	 { "NNDescent_generate_eval_set", _wrap_NNDescent_generate_eval_set, METH_VARARGS, " Sample a small number of points to evaluate the quality of KNNG built"},
+	 { "NNDescent_eval_recall", _wrap_NNDescent_eval_recall, METH_VARARGS, " Evaluate the quality of KNNG built"},
+	 { "NNDescent_has_built_set", _wrap_NNDescent_has_built_set, METH_VARARGS, NULL},
+	 { "NNDescent_has_built_get", _wrap_NNDescent_has_built_get, METH_O, NULL},
+	 { "NNDescent_K_set", _wrap_NNDescent_K_set, METH_VARARGS, NULL},
+	 { "NNDescent_K_get", _wrap_NNDescent_K_get, METH_O, NULL},
+	 { "NNDescent_S_set", _wrap_NNDescent_S_set, METH_VARARGS, NULL},
+	 { "NNDescent_S_get", _wrap_NNDescent_S_get, METH_O, NULL},
+	 { "NNDescent_R_set", _wrap_NNDescent_R_set, METH_VARARGS, NULL},
+	 { "NNDescent_R_get", _wrap_NNDescent_R_get, METH_O, NULL},
+	 { "NNDescent_L_set", _wrap_NNDescent_L_set, METH_VARARGS, NULL},
+	 { "NNDescent_L_get", _wrap_NNDescent_L_get, METH_O, NULL},
+	 { "NNDescent_iter_set", _wrap_NNDescent_iter_set, METH_VARARGS, NULL},
+	 { "NNDescent_iter_get", _wrap_NNDescent_iter_get, METH_O, NULL},
+	 { "NNDescent_search_L_set", _wrap_NNDescent_search_L_set, METH_VARARGS, NULL},
+	 { "NNDescent_search_L_get", _wrap_NNDescent_search_L_get, METH_O, NULL},
+	 { "NNDescent_random_seed_set", _wrap_NNDescent_random_seed_set, METH_VARARGS, NULL},
+	 { "NNDescent_random_seed_get", _wrap_NNDescent_random_seed_get, METH_O, NULL},
+	 { "NNDescent_d_set", _wrap_NNDescent_d_set, METH_VARARGS, NULL},
+	 { "NNDescent_d_get", _wrap_NNDescent_d_get, METH_O, NULL},
+	 { "NNDescent_ntotal_set", _wrap_NNDescent_ntotal_set, METH_VARARGS, NULL},
+	 { "NNDescent_ntotal_get", _wrap_NNDescent_ntotal_get, METH_O, NULL},
+	 { "NNDescent_graph_set", _wrap_NNDescent_graph_set, METH_VARARGS, NULL},
+	 { "NNDescent_graph_get", _wrap_NNDescent_graph_get, METH_O, NULL},
+	 { "NNDescent_final_graph_set", _wrap_NNDescent_final_graph_set, METH_VARARGS, NULL},
+	 { "NNDescent_final_graph_get", _wrap_NNDescent_final_graph_get, METH_O, NULL},
+	 { "NNDescent_swigregister", NNDescent_swigregister, METH_O, NULL},
+	 { "NNDescent_swiginit", NNDescent_swiginit, METH_VARARGS, NULL},
+	 { "IndexNNDescent_nndescent_set", _wrap_IndexNNDescent_nndescent_set, METH_VARARGS, NULL},
+	 { "IndexNNDescent_nndescent_get", _wrap_IndexNNDescent_nndescent_get, METH_O, NULL},
+	 { "IndexNNDescent_own_fields_set", _wrap_IndexNNDescent_own_fields_set, METH_VARARGS, NULL},
+	 { "IndexNNDescent_own_fields_get", _wrap_IndexNNDescent_own_fields_get, METH_O, NULL},
+	 { "IndexNNDescent_storage_set", _wrap_IndexNNDescent_storage_set, METH_VARARGS, NULL},
+	 { "IndexNNDescent_storage_get", _wrap_IndexNNDescent_storage_get, METH_O, NULL},
+	 { "new_IndexNNDescent", _wrap_new_IndexNNDescent, METH_VARARGS, NULL},
+	 { "delete_IndexNNDescent", _wrap_delete_IndexNNDescent, METH_O, NULL},
+	 { "IndexNNDescent_add", _wrap_IndexNNDescent_add, METH_VARARGS, NULL},
+	 { "IndexNNDescent_train", _wrap_IndexNNDescent_train, METH_VARARGS, " Trains the storage if needed"},
+	 { "IndexNNDescent_search", _wrap_IndexNNDescent_search, METH_VARARGS, " entry point for search"},
+	 { "IndexNNDescent_reconstruct", _wrap_IndexNNDescent_reconstruct, METH_VARARGS, NULL},
+	 { "IndexNNDescent_reset", _wrap_IndexNNDescent_reset, METH_O, NULL},
+	 { "IndexNNDescent_swigregister", IndexNNDescent_swigregister, METH_O, NULL},
+	 { "IndexNNDescent_swiginit", IndexNNDescent_swiginit, METH_VARARGS, NULL},
+	 { "new_IndexNNDescentFlat", _wrap_new_IndexNNDescentFlat, METH_VARARGS, NULL},
+	 { "delete_IndexNNDescentFlat", _wrap_delete_IndexNNDescentFlat, METH_O, NULL},
+	 { "IndexNNDescentFlat_swigregister", IndexNNDescentFlat_swigregister, METH_O, NULL},
+	 { "IndexNNDescentFlat_swiginit", IndexNNDescentFlat_swiginit, METH_VARARGS, NULL},
+	 { "IndexIVFFlat_add_core", _wrap_IndexIVFFlat_add_core, METH_VARARGS, NULL},
+	 { "IndexIVFFlat_encode_vectors", _wrap_IndexIVFFlat_encode_vectors, METH_VARARGS, NULL},
+	 { "IndexIVFFlat_get_InvertedListScanner", _wrap_IndexIVFFlat_get_InvertedListScanner, METH_VARARGS, NULL},
+	 { "IndexIVFFlat_reconstruct_from_offset", _wrap_IndexIVFFlat_reconstruct_from_offset, METH_VARARGS, NULL},
+	 { "IndexIVFFlat_sa_decode", _wrap_IndexIVFFlat_sa_decode, METH_VARARGS, NULL},
+	 { "new_IndexIVFFlat", _wrap_new_IndexIVFFlat, METH_VARARGS, NULL},
+	 { "delete_IndexIVFFlat", _wrap_delete_IndexIVFFlat, METH_O, NULL},
+	 { "IndexIVFFlat_swigregister", IndexIVFFlat_swigregister, METH_O, NULL},
+	 { "IndexIVFFlat_swiginit", IndexIVFFlat_swiginit, METH_VARARGS, NULL},
+	 { "IndexIVFFlatDedup_instances_set", _wrap_IndexIVFFlatDedup_instances_set, METH_VARARGS, "\n"
+		"Maps ids stored in the index to the ids of vectors that are\n"
+		"the same. When a vector is unique, it does not appear in the\n"
+		"instances map\n"
+		""},
+	 { "IndexIVFFlatDedup_instances_get", _wrap_IndexIVFFlatDedup_instances_get, METH_O, "\n"
+		"Maps ids stored in the index to the ids of vectors that are\n"
+		"the same. When a vector is unique, it does not appear in the\n"
+		"instances map\n"
+		""},
+	 { "IndexIVFFlatDedup_train", _wrap_IndexIVFFlatDedup_train, METH_VARARGS, " also dedups the training set"},
+	 { "IndexIVFFlatDedup_add_with_ids", _wrap_IndexIVFFlatDedup_add_with_ids, METH_VARARGS, " implemented for all IndexIVF* classes"},
+	 { "IndexIVFFlatDedup_search_preassigned", _wrap_IndexIVFFlatDedup_search_preassigned, METH_VARARGS, NULL},
+	 { "IndexIVFFlatDedup_remove_ids", _wrap_IndexIVFFlatDedup_remove_ids, METH_VARARGS, NULL},
+	 { "IndexIVFFlatDedup_range_search", _wrap_IndexIVFFlatDedup_range_search, METH_VARARGS, " not implemented"},
+	 { "IndexIVFFlatDedup_update_vectors", _wrap_IndexIVFFlatDedup_update_vectors, METH_VARARGS, " not implemented"},
+	 { "IndexIVFFlatDedup_reconstruct_from_offset", _wrap_IndexIVFFlatDedup_reconstruct_from_offset, METH_VARARGS, " not implemented"},
+	 { "new_IndexIVFFlatDedup", _wrap_new_IndexIVFFlatDedup, METH_VARARGS, NULL},
+	 { "delete_IndexIVFFlatDedup", _wrap_delete_IndexIVFFlatDedup, METH_O, NULL},
+	 { "IndexIVFFlatDedup_swigregister", IndexIVFFlatDedup_swigregister, METH_O, NULL},
+	 { "IndexIVFFlatDedup_swiginit", IndexIVFFlatDedup_swiginit, METH_VARARGS, NULL},
+	 { "storage_distance_computer", _wrap_storage_distance_computer, METH_O, NULL},
+	 { "NSG_ntotal_set", _wrap_NSG_ntotal_set, METH_VARARGS, " nb of nodes"},
+	 { "NSG_ntotal_get", _wrap_NSG_ntotal_get, METH_O, " nb of nodes"},
+	 { "NSG_R_set", _wrap_NSG_R_set, METH_VARARGS, " nb of neighbors per node"},
+	 { "NSG_R_get", _wrap_NSG_R_get, METH_O, " nb of neighbors per node"},
+	 { "NSG_L_set", _wrap_NSG_L_set, METH_VARARGS, " length of the search path at construction time"},
+	 { "NSG_L_get", _wrap_NSG_L_get, METH_O, " length of the search path at construction time"},
+	 { "NSG_C_set", _wrap_NSG_C_set, METH_VARARGS, " candidate pool size at construction time"},
+	 { "NSG_C_get", _wrap_NSG_C_get, METH_O, " candidate pool size at construction time"},
+	 { "NSG_search_L_set", _wrap_NSG_search_L_set, METH_VARARGS, " length of the search path"},
+	 { "NSG_search_L_get", _wrap_NSG_search_L_get, METH_O, " length of the search path"},
+	 { "NSG_enterpoint_set", _wrap_NSG_enterpoint_set, METH_VARARGS, " enterpoint"},
+	 { "NSG_enterpoint_get", _wrap_NSG_enterpoint_get, METH_O, " enterpoint"},
+	 { "NSG_final_graph_set", _wrap_NSG_final_graph_set, METH_VARARGS, " NSG graph structure"},
+	 { "NSG_final_graph_get", _wrap_NSG_final_graph_get, METH_O, " NSG graph structure"},
+	 { "NSG_is_built_set", _wrap_NSG_is_built_set, METH_VARARGS, " NSG is built or not"},
+	 { "NSG_is_built_get", _wrap_NSG_is_built_get, METH_O, " NSG is built or not"},
+	 { "NSG_rng_set", _wrap_NSG_rng_set, METH_VARARGS, " random generator"},
+	 { "NSG_rng_get", _wrap_NSG_rng_get, METH_O, " random generator"},
+	 { "new_NSG", _wrap_new_NSG, METH_VARARGS, NULL},
+	 { "NSG_build", _wrap_NSG_build, METH_VARARGS, NULL},
+	 { "NSG_reset", _wrap_NSG_reset, METH_O, NULL},
+	 { "NSG_search", _wrap_NSG_search, METH_VARARGS, NULL},
+	 { "NSG_init_graph", _wrap_NSG_init_graph, METH_VARARGS, NULL},
+	 { "NSG_add_reverse_links", _wrap_NSG_add_reverse_links, METH_VARARGS, NULL},
+	 { "NSG_sync_prune", _wrap_NSG_sync_prune, METH_VARARGS, NULL},
+	 { "NSG_link", _wrap_NSG_link, METH_VARARGS, NULL},
+	 { "NSG_tree_grow", _wrap_NSG_tree_grow, METH_VARARGS, NULL},
+	 { "NSG_dfs", _wrap_NSG_dfs, METH_VARARGS, NULL},
+	 { "NSG_attach_unlinked", _wrap_NSG_attach_unlinked, METH_VARARGS, NULL},
+	 { "NSG_check_graph", _wrap_NSG_check_graph, METH_O, NULL},
+	 { "delete_NSG", _wrap_delete_NSG, METH_O, NULL},
+	 { "NSG_swigregister", NSG_swigregister, METH_O, NULL},
+	 { "NSG_swiginit", NSG_swiginit, METH_VARARGS, NULL},
+	 { "IndexNSG_nsg_set", _wrap_IndexNSG_nsg_set, METH_VARARGS, " the link strcuture"},
+	 { "IndexNSG_nsg_get", _wrap_IndexNSG_nsg_get, METH_O, " the link strcuture"},
+	 { "IndexNSG_own_fields_set", _wrap_IndexNSG_own_fields_set, METH_VARARGS, " the sequential storage"},
+	 { "IndexNSG_own_fields_get", _wrap_IndexNSG_own_fields_get, METH_O, " the sequential storage"},
+	 { "IndexNSG_storage_set", _wrap_IndexNSG_storage_set, METH_VARARGS, NULL},
+	 { "IndexNSG_storage_get", _wrap_IndexNSG_storage_get, METH_O, NULL},
+	 { "IndexNSG_is_built_set", _wrap_IndexNSG_is_built_set, METH_VARARGS, " the index is built or not"},
+	 { "IndexNSG_is_built_get", _wrap_IndexNSG_is_built_get, METH_O, " the index is built or not"},
+	 { "IndexNSG_GK_set", _wrap_IndexNSG_GK_set, METH_VARARGS, " K of KNN graph for building"},
+	 { "IndexNSG_GK_get", _wrap_IndexNSG_GK_get, METH_O, " K of KNN graph for building"},
+	 { "IndexNSG_build_type_set", _wrap_IndexNSG_build_type_set, METH_VARARGS, "\n"
+		"indicate how to build a knn graph\n"
+		"- 0: build NSG with brute force search\n"
+		"- 1: build NSG with NNDescent\n"
+		""},
+	 { "IndexNSG_build_type_get", _wrap_IndexNSG_build_type_get, METH_O, "\n"
+		"indicate how to build a knn graph\n"
+		"- 0: build NSG with brute force search\n"
+		"- 1: build NSG with NNDescent\n"
+		""},
+	 { "IndexNSG_nndescent_S_set", _wrap_IndexNSG_nndescent_S_set, METH_VARARGS, " parameters for nndescent"},
+	 { "IndexNSG_nndescent_S_get", _wrap_IndexNSG_nndescent_S_get, METH_O, " parameters for nndescent"},
+	 { "IndexNSG_nndescent_R_set", _wrap_IndexNSG_nndescent_R_set, METH_VARARGS, NULL},
+	 { "IndexNSG_nndescent_R_get", _wrap_IndexNSG_nndescent_R_get, METH_O, NULL},
+	 { "IndexNSG_nndescent_L_set", _wrap_IndexNSG_nndescent_L_set, METH_VARARGS, NULL},
+	 { "IndexNSG_nndescent_L_get", _wrap_IndexNSG_nndescent_L_get, METH_O, NULL},
+	 { "IndexNSG_nndescent_iter_set", _wrap_IndexNSG_nndescent_iter_set, METH_VARARGS, NULL},
+	 { "IndexNSG_nndescent_iter_get", _wrap_IndexNSG_nndescent_iter_get, METH_O, NULL},
+	 { "new_IndexNSG", _wrap_new_IndexNSG, METH_VARARGS, NULL},
+	 { "delete_IndexNSG", _wrap_delete_IndexNSG, METH_O, NULL},
+	 { "IndexNSG_build", _wrap_IndexNSG_build, METH_VARARGS, NULL},
+	 { "IndexNSG_add", _wrap_IndexNSG_add, METH_VARARGS, NULL},
+	 { "IndexNSG_train", _wrap_IndexNSG_train, METH_VARARGS, " Trains the storage if needed"},
+	 { "IndexNSG_search", _wrap_IndexNSG_search, METH_VARARGS, " entry point for search"},
+	 { "IndexNSG_reconstruct", _wrap_IndexNSG_reconstruct, METH_VARARGS, NULL},
+	 { "IndexNSG_reset", _wrap_IndexNSG_reset, METH_O, NULL},
+	 { "IndexNSG_check_knn_graph", _wrap_IndexNSG_check_knn_graph, METH_VARARGS, NULL},
+	 { "IndexNSG_swigregister", IndexNSG_swigregister, METH_O, NULL},
+	 { "IndexNSG_swiginit", IndexNSG_swiginit, METH_VARARGS, NULL},
+	 { "new_IndexNSGFlat", _wrap_new_IndexNSGFlat, METH_VARARGS, NULL},
+	 { "delete_IndexNSGFlat", _wrap_delete_IndexNSGFlat, METH_O, NULL},
+	 { "IndexNSGFlat_swigregister", IndexNSGFlat_swigregister, METH_O, NULL},
+	 { "IndexNSGFlat_swiginit", IndexNSGFlat_swiginit, METH_VARARGS, NULL},
+	 { "OnDiskOneList_size_set", _wrap_OnDiskOneList_size_set, METH_VARARGS, NULL},
+	 { "OnDiskOneList_size_get", _wrap_OnDiskOneList_size_get, METH_O, NULL},
+	 { "OnDiskOneList_capacity_set", _wrap_OnDiskOneList_capacity_set, METH_VARARGS, NULL},
+	 { "OnDiskOneList_capacity_get", _wrap_OnDiskOneList_capacity_get, METH_O, NULL},
+	 { "OnDiskOneList_offset_set", _wrap_OnDiskOneList_offset_set, METH_VARARGS, NULL},
+	 { "OnDiskOneList_offset_get", _wrap_OnDiskOneList_offset_get, METH_O, NULL},
+	 { "new_OnDiskOneList", _wrap_new_OnDiskOneList, METH_NOARGS, NULL},
+	 { "delete_OnDiskOneList", _wrap_delete_OnDiskOneList, METH_O, NULL},
+	 { "OnDiskOneList_swigregister", OnDiskOneList_swigregister, METH_O, NULL},
+	 { "OnDiskOneList_swiginit", OnDiskOneList_swiginit, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_lists_set", _wrap_OnDiskInvertedLists_lists_set, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_lists_get", _wrap_OnDiskInvertedLists_lists_get, METH_O, NULL},
+	 { "OnDiskInvertedLists_slots_set", _wrap_OnDiskInvertedLists_slots_set, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_slots_get", _wrap_OnDiskInvertedLists_slots_get, METH_O, NULL},
+	 { "OnDiskInvertedLists_filename_set", _wrap_OnDiskInvertedLists_filename_set, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_filename_get", _wrap_OnDiskInvertedLists_filename_get, METH_O, NULL},
+	 { "OnDiskInvertedLists_totsize_set", _wrap_OnDiskInvertedLists_totsize_set, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_totsize_get", _wrap_OnDiskInvertedLists_totsize_get, METH_O, NULL},
+	 { "OnDiskInvertedLists_ptr_set", _wrap_OnDiskInvertedLists_ptr_set, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_ptr_get", _wrap_OnDiskInvertedLists_ptr_get, METH_O, NULL},
+	 { "OnDiskInvertedLists_read_only_set", _wrap_OnDiskInvertedLists_read_only_set, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_read_only_get", _wrap_OnDiskInvertedLists_read_only_get, METH_O, NULL},
+	 { "OnDiskInvertedLists_list_size", _wrap_OnDiskInvertedLists_list_size, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_get_codes", _wrap_OnDiskInvertedLists_get_codes, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_get_ids", _wrap_OnDiskInvertedLists_get_ids, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_add_entries", _wrap_OnDiskInvertedLists_add_entries, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_update_entries", _wrap_OnDiskInvertedLists_update_entries, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_resize", _wrap_OnDiskInvertedLists_resize, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_merge_from", _wrap_OnDiskInvertedLists_merge_from, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_merge_from_1", _wrap_OnDiskInvertedLists_merge_from_1, METH_VARARGS, " same as merge_from for a single invlist"},
+	 { "OnDiskInvertedLists_crop_invlists", _wrap_OnDiskInvertedLists_crop_invlists, METH_VARARGS, " restrict the inverted lists to l0:l1 without touching the mmapped region"},
+	 { "OnDiskInvertedLists_prefetch_lists", _wrap_OnDiskInvertedLists_prefetch_lists, METH_VARARGS, NULL},
+	 { "delete_OnDiskInvertedLists", _wrap_delete_OnDiskInvertedLists, METH_O, NULL},
+	 { "OnDiskInvertedLists_locks_set", _wrap_OnDiskInvertedLists_locks_set, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_locks_get", _wrap_OnDiskInvertedLists_locks_get, METH_O, NULL},
+	 { "OnDiskInvertedLists_pf_set", _wrap_OnDiskInvertedLists_pf_set, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_pf_get", _wrap_OnDiskInvertedLists_pf_get, METH_O, NULL},
+	 { "OnDiskInvertedLists_prefetch_nthread_set", _wrap_OnDiskInvertedLists_prefetch_nthread_set, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_prefetch_nthread_get", _wrap_OnDiskInvertedLists_prefetch_nthread_get, METH_O, NULL},
+	 { "OnDiskInvertedLists_do_mmap", _wrap_OnDiskInvertedLists_do_mmap, METH_O, NULL},
+	 { "OnDiskInvertedLists_update_totsize", _wrap_OnDiskInvertedLists_update_totsize, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_resize_locked", _wrap_OnDiskInvertedLists_resize_locked, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_allocate_slot", _wrap_OnDiskInvertedLists_allocate_slot, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_free_slot", _wrap_OnDiskInvertedLists_free_slot, METH_VARARGS, NULL},
+	 { "OnDiskInvertedLists_set_all_lists_sizes", _wrap_OnDiskInvertedLists_set_all_lists_sizes, METH_VARARGS, " override all list sizes and make a packed storage"},
+	 { "new_OnDiskInvertedLists", _wrap_new_OnDiskInvertedLists, METH_VARARGS, " are inverted lists mapped read-only"},
+	 { "OnDiskInvertedLists_swigregister", OnDiskInvertedLists_swigregister, METH_O, NULL},
+	 { "OnDiskInvertedLists_swiginit", OnDiskInvertedLists_swiginit, METH_VARARGS, NULL},
+	 { "ZnSphereSearch_dimS_set", _wrap_ZnSphereSearch_dimS_set, METH_VARARGS, NULL},
+	 { "ZnSphereSearch_dimS_get", _wrap_ZnSphereSearch_dimS_get, METH_O, NULL},
+	 { "ZnSphereSearch_r2_set", _wrap_ZnSphereSearch_r2_set, METH_VARARGS, NULL},
+	 { "ZnSphereSearch_r2_get", _wrap_ZnSphereSearch_r2_get, METH_O, NULL},
+	 { "ZnSphereSearch_natom_set", _wrap_ZnSphereSearch_natom_set, METH_VARARGS, NULL},
+	 { "ZnSphereSearch_natom_get", _wrap_ZnSphereSearch_natom_get, METH_O, NULL},
+	 { "ZnSphereSearch_voc_set", _wrap_ZnSphereSearch_voc_set, METH_VARARGS, " size dim * ntatom"},
+	 { "ZnSphereSearch_voc_get", _wrap_ZnSphereSearch_voc_get, METH_O, " size dim * ntatom"},
+	 { "new_ZnSphereSearch", _wrap_new_ZnSphereSearch, METH_VARARGS, NULL},
+	 { "ZnSphereSearch_search", _wrap_ZnSphereSearch_search, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"find nearest centroid. x does not need to be normalized\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"full call. Requires externally-allocated temp space\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 3:*\n"
+		"full call. Requires externally-allocated temp space\n"
+		""},
+	 { "ZnSphereSearch_search_multi", _wrap_ZnSphereSearch_search_multi, METH_VARARGS, NULL},
+	 { "delete_ZnSphereSearch", _wrap_delete_ZnSphereSearch, METH_O, NULL},
+	 { "ZnSphereSearch_swigregister", ZnSphereSearch_swigregister, METH_O, NULL},
+	 { "ZnSphereSearch_swiginit", ZnSphereSearch_swiginit, METH_VARARGS, NULL},
+	 { "EnumeratedVectors_nv_set", _wrap_EnumeratedVectors_nv_set, METH_VARARGS, " size of the collection"},
+	 { "EnumeratedVectors_nv_get", _wrap_EnumeratedVectors_nv_get, METH_O, " size of the collection"},
+	 { "EnumeratedVectors_dim_set", _wrap_EnumeratedVectors_dim_set, METH_VARARGS, NULL},
+	 { "EnumeratedVectors_dim_get", _wrap_EnumeratedVectors_dim_get, METH_O, NULL},
+	 { "EnumeratedVectors_encode", _wrap_EnumeratedVectors_encode, METH_VARARGS, " encode a vector from a collection"},
+	 { "EnumeratedVectors_decode", _wrap_EnumeratedVectors_decode, METH_VARARGS, " decode it"},
+	 { "EnumeratedVectors_encode_multi", _wrap_EnumeratedVectors_encode_multi, METH_VARARGS, NULL},
+	 { "EnumeratedVectors_decode_multi", _wrap_EnumeratedVectors_decode_multi, METH_VARARGS, NULL},
+	 { "EnumeratedVectors_find_nn", _wrap_EnumeratedVectors_find_nn, METH_VARARGS, NULL},
+	 { "delete_EnumeratedVectors", _wrap_delete_EnumeratedVectors, METH_O, NULL},
+	 { "EnumeratedVectors_swigregister", EnumeratedVectors_swigregister, METH_O, NULL},
+	 { "Repeat_val_set", _wrap_Repeat_val_set, METH_VARARGS, NULL},
+	 { "Repeat_val_get", _wrap_Repeat_val_get, METH_O, NULL},
+	 { "Repeat_n_set", _wrap_Repeat_n_set, METH_VARARGS, NULL},
+	 { "Repeat_n_get", _wrap_Repeat_n_get, METH_O, NULL},
+	 { "new_Repeat", _wrap_new_Repeat, METH_NOARGS, NULL},
+	 { "delete_Repeat", _wrap_delete_Repeat, METH_O, NULL},
+	 { "Repeat_swigregister", Repeat_swigregister, METH_O, NULL},
+	 { "Repeat_swiginit", Repeat_swiginit, METH_VARARGS, NULL},
+	 { "Repeats_dim_set", _wrap_Repeats_dim_set, METH_VARARGS, NULL},
+	 { "Repeats_dim_get", _wrap_Repeats_dim_get, METH_O, NULL},
+	 { "Repeats_repeats_set", _wrap_Repeats_repeats_set, METH_VARARGS, NULL},
+	 { "Repeats_repeats_get", _wrap_Repeats_repeats_get, METH_O, NULL},
+	 { "new_Repeats", _wrap_new_Repeats, METH_VARARGS, NULL},
+	 { "Repeats_count", _wrap_Repeats_count, METH_O, NULL},
+	 { "Repeats_encode", _wrap_Repeats_encode, METH_VARARGS, NULL},
+	 { "Repeats_decode", _wrap_Repeats_decode, METH_VARARGS, NULL},
+	 { "delete_Repeats", _wrap_delete_Repeats, METH_O, NULL},
+	 { "Repeats_swigregister", Repeats_swigregister, METH_O, NULL},
+	 { "Repeats_swiginit", Repeats_swiginit, METH_VARARGS, NULL},
+	 { "ZnSphereCodec_code_segments_set", _wrap_ZnSphereCodec_code_segments_set, METH_VARARGS, NULL},
+	 { "ZnSphereCodec_code_segments_get", _wrap_ZnSphereCodec_code_segments_get, METH_O, NULL},
+	 { "ZnSphereCodec_nv_set", _wrap_ZnSphereCodec_nv_set, METH_VARARGS, NULL},
+	 { "ZnSphereCodec_nv_get", _wrap_ZnSphereCodec_nv_get, METH_O, NULL},
+	 { "ZnSphereCodec_code_size_set", _wrap_ZnSphereCodec_code_size_set, METH_VARARGS, NULL},
+	 { "ZnSphereCodec_code_size_get", _wrap_ZnSphereCodec_code_size_get, METH_O, NULL},
+	 { "new_ZnSphereCodec", _wrap_new_ZnSphereCodec, METH_VARARGS, NULL},
+	 { "ZnSphereCodec_search_and_encode", _wrap_ZnSphereCodec_search_and_encode, METH_VARARGS, NULL},
+	 { "ZnSphereCodec_decode", _wrap_ZnSphereCodec_decode, METH_VARARGS, NULL},
+	 { "ZnSphereCodec_encode", _wrap_ZnSphereCodec_encode, METH_VARARGS, " takes vectors that do not need to be centroids"},
+	 { "delete_ZnSphereCodec", _wrap_delete_ZnSphereCodec, METH_O, NULL},
+	 { "ZnSphereCodec_swigregister", ZnSphereCodec_swigregister, METH_O, NULL},
+	 { "ZnSphereCodec_swiginit", ZnSphereCodec_swiginit, METH_VARARGS, NULL},
+	 { "ZnSphereCodecRec_r2_set", _wrap_ZnSphereCodecRec_r2_set, METH_VARARGS, NULL},
+	 { "ZnSphereCodecRec_r2_get", _wrap_ZnSphereCodecRec_r2_get, METH_O, NULL},
+	 { "ZnSphereCodecRec_log2_dim_set", _wrap_ZnSphereCodecRec_log2_dim_set, METH_VARARGS, NULL},
+	 { "ZnSphereCodecRec_log2_dim_get", _wrap_ZnSphereCodecRec_log2_dim_get, METH_O, NULL},
+	 { "ZnSphereCodecRec_code_size_set", _wrap_ZnSphereCodecRec_code_size_set, METH_VARARGS, NULL},
+	 { "ZnSphereCodecRec_code_size_get", _wrap_ZnSphereCodecRec_code_size_get, METH_O, NULL},
+	 { "new_ZnSphereCodecRec", _wrap_new_ZnSphereCodecRec, METH_VARARGS, NULL},
+	 { "ZnSphereCodecRec_encode_centroid", _wrap_ZnSphereCodecRec_encode_centroid, METH_VARARGS, NULL},
+	 { "ZnSphereCodecRec_decode", _wrap_ZnSphereCodecRec_decode, METH_VARARGS, NULL},
+	 { "ZnSphereCodecRec_encode", _wrap_ZnSphereCodecRec_encode, METH_VARARGS, "\n"
+		"vectors need to be centroids (does not work on arbitrary\n"
+		"vectors)\n"
+		""},
+	 { "ZnSphereCodecRec_all_nv_set", _wrap_ZnSphereCodecRec_all_nv_set, METH_VARARGS, NULL},
+	 { "ZnSphereCodecRec_all_nv_get", _wrap_ZnSphereCodecRec_all_nv_get, METH_O, NULL},
+	 { "ZnSphereCodecRec_all_nv_cum_set", _wrap_ZnSphereCodecRec_all_nv_cum_set, METH_VARARGS, NULL},
+	 { "ZnSphereCodecRec_all_nv_cum_get", _wrap_ZnSphereCodecRec_all_nv_cum_get, METH_O, NULL},
+	 { "ZnSphereCodecRec_decode_cache_ld_set", _wrap_ZnSphereCodecRec_decode_cache_ld_set, METH_VARARGS, NULL},
+	 { "ZnSphereCodecRec_decode_cache_ld_get", _wrap_ZnSphereCodecRec_decode_cache_ld_get, METH_O, NULL},
+	 { "ZnSphereCodecRec_decode_cache_set", _wrap_ZnSphereCodecRec_decode_cache_set, METH_VARARGS, NULL},
+	 { "ZnSphereCodecRec_decode_cache_get", _wrap_ZnSphereCodecRec_decode_cache_get, METH_O, NULL},
+	 { "ZnSphereCodecRec_get_nv", _wrap_ZnSphereCodecRec_get_nv, METH_VARARGS, NULL},
+	 { "ZnSphereCodecRec_get_nv_cum", _wrap_ZnSphereCodecRec_get_nv_cum, METH_VARARGS, NULL},
+	 { "ZnSphereCodecRec_set_nv_cum", _wrap_ZnSphereCodecRec_set_nv_cum, METH_VARARGS, NULL},
+	 { "delete_ZnSphereCodecRec", _wrap_delete_ZnSphereCodecRec, METH_O, NULL},
+	 { "ZnSphereCodecRec_swigregister", ZnSphereCodecRec_swigregister, METH_O, NULL},
+	 { "ZnSphereCodecRec_swiginit", ZnSphereCodecRec_swiginit, METH_VARARGS, NULL},
+	 { "ZnSphereCodecAlt_use_rec_set", _wrap_ZnSphereCodecAlt_use_rec_set, METH_VARARGS, NULL},
+	 { "ZnSphereCodecAlt_use_rec_get", _wrap_ZnSphereCodecAlt_use_rec_get, METH_O, NULL},
+	 { "ZnSphereCodecAlt_znc_rec_set", _wrap_ZnSphereCodecAlt_znc_rec_set, METH_VARARGS, NULL},
+	 { "ZnSphereCodecAlt_znc_rec_get", _wrap_ZnSphereCodecAlt_znc_rec_get, METH_O, NULL},
+	 { "new_ZnSphereCodecAlt", _wrap_new_ZnSphereCodecAlt, METH_VARARGS, NULL},
+	 { "ZnSphereCodecAlt_encode", _wrap_ZnSphereCodecAlt_encode, METH_VARARGS, NULL},
+	 { "ZnSphereCodecAlt_decode", _wrap_ZnSphereCodecAlt_decode, METH_VARARGS, NULL},
+	 { "delete_ZnSphereCodecAlt", _wrap_delete_ZnSphereCodecAlt, METH_O, NULL},
+	 { "ZnSphereCodecAlt_swigregister", ZnSphereCodecAlt_swigregister, METH_O, NULL},
+	 { "ZnSphereCodecAlt_swiginit", ZnSphereCodecAlt_swiginit, METH_VARARGS, NULL},
+	 { "IndexLattice_nsq_set", _wrap_IndexLattice_nsq_set, METH_VARARGS, " number of sub-vectors"},
+	 { "IndexLattice_nsq_get", _wrap_IndexLattice_nsq_get, METH_O, " number of sub-vectors"},
+	 { "IndexLattice_dsq_set", _wrap_IndexLattice_dsq_set, METH_VARARGS, " dimension of sub-vectors"},
+	 { "IndexLattice_dsq_get", _wrap_IndexLattice_dsq_get, METH_O, " dimension of sub-vectors"},
+	 { "IndexLattice_zn_sphere_codec_set", _wrap_IndexLattice_zn_sphere_codec_set, METH_VARARGS, " the lattice quantizer"},
+	 { "IndexLattice_zn_sphere_codec_get", _wrap_IndexLattice_zn_sphere_codec_get, METH_O, " the lattice quantizer"},
+	 { "IndexLattice_scale_nbit_set", _wrap_IndexLattice_scale_nbit_set, METH_VARARGS, " nb bits used to encode the scale, per subvector"},
+	 { "IndexLattice_scale_nbit_get", _wrap_IndexLattice_scale_nbit_get, METH_O, " nb bits used to encode the scale, per subvector"},
+	 { "IndexLattice_lattice_nbit_set", _wrap_IndexLattice_lattice_nbit_set, METH_VARARGS, NULL},
+	 { "IndexLattice_lattice_nbit_get", _wrap_IndexLattice_lattice_nbit_get, METH_O, NULL},
+	 { "IndexLattice_code_size_set", _wrap_IndexLattice_code_size_set, METH_VARARGS, " total, in bytes"},
+	 { "IndexLattice_code_size_get", _wrap_IndexLattice_code_size_get, METH_O, " total, in bytes"},
+	 { "IndexLattice_trained_set", _wrap_IndexLattice_trained_set, METH_VARARGS, " mins and maxes of the vector norms, per subquantizer"},
+	 { "IndexLattice_trained_get", _wrap_IndexLattice_trained_get, METH_O, " mins and maxes of the vector norms, per subquantizer"},
+	 { "new_IndexLattice", _wrap_new_IndexLattice, METH_VARARGS, NULL},
+	 { "IndexLattice_train", _wrap_IndexLattice_train, METH_VARARGS, NULL},
+	 { "IndexLattice_sa_code_size", _wrap_IndexLattice_sa_code_size, METH_O, NULL},
+	 { "IndexLattice_sa_encode", _wrap_IndexLattice_sa_encode, METH_VARARGS, NULL},
+	 { "IndexLattice_sa_decode", _wrap_IndexLattice_sa_decode, METH_VARARGS, NULL},
+	 { "IndexLattice_add", _wrap_IndexLattice_add, METH_VARARGS, " not implemented"},
+	 { "IndexLattice_search", _wrap_IndexLattice_search, METH_VARARGS, NULL},
+	 { "IndexLattice_reset", _wrap_IndexLattice_reset, METH_O, NULL},
+	 { "delete_IndexLattice", _wrap_delete_IndexLattice, METH_O, NULL},
+	 { "IndexLattice_swigregister", IndexLattice_swigregister, METH_O, NULL},
+	 { "IndexLattice_swiginit", IndexLattice_swiginit, METH_VARARGS, NULL},
+	 { "IVFPQSearchParameters_scan_table_threshold_set", _wrap_IVFPQSearchParameters_scan_table_threshold_set, METH_VARARGS, " use table computation or on-the-fly?"},
+	 { "IVFPQSearchParameters_scan_table_threshold_get", _wrap_IVFPQSearchParameters_scan_table_threshold_get, METH_O, " use table computation or on-the-fly?"},
+	 { "IVFPQSearchParameters_polysemous_ht_set", _wrap_IVFPQSearchParameters_polysemous_ht_set, METH_VARARGS, " Hamming thresh for polysemous filtering"},
+	 { "IVFPQSearchParameters_polysemous_ht_get", _wrap_IVFPQSearchParameters_polysemous_ht_get, METH_O, " Hamming thresh for polysemous filtering"},
+	 { "new_IVFPQSearchParameters", _wrap_new_IVFPQSearchParameters, METH_NOARGS, NULL},
+	 { "delete_IVFPQSearchParameters", _wrap_delete_IVFPQSearchParameters, METH_O, NULL},
+	 { "IVFPQSearchParameters_swigregister", IVFPQSearchParameters_swigregister, METH_O, NULL},
+	 { "IVFPQSearchParameters_swiginit", IVFPQSearchParameters_swiginit, METH_VARARGS, NULL},
+	 { "IndexIVFPQ_by_residual_set", _wrap_IndexIVFPQ_by_residual_set, METH_VARARGS, " Encode residual or plain vector?"},
+	 { "IndexIVFPQ_by_residual_get", _wrap_IndexIVFPQ_by_residual_get, METH_O, " Encode residual or plain vector?"},
+	 { "IndexIVFPQ_pq_set", _wrap_IndexIVFPQ_pq_set, METH_VARARGS, " produces the codes"},
+	 { "IndexIVFPQ_pq_get", _wrap_IndexIVFPQ_pq_get, METH_O, " produces the codes"},
+	 { "IndexIVFPQ_do_polysemous_training_set", _wrap_IndexIVFPQ_do_polysemous_training_set, METH_VARARGS, " reorder PQ centroids after training?"},
+	 { "IndexIVFPQ_do_polysemous_training_get", _wrap_IndexIVFPQ_do_polysemous_training_get, METH_O, " reorder PQ centroids after training?"},
+	 { "IndexIVFPQ_polysemous_training_set", _wrap_IndexIVFPQ_polysemous_training_set, METH_VARARGS, " if NULL, use default"},
+	 { "IndexIVFPQ_polysemous_training_get", _wrap_IndexIVFPQ_polysemous_training_get, METH_O, " if NULL, use default"},
+	 { "IndexIVFPQ_scan_table_threshold_set", _wrap_IndexIVFPQ_scan_table_threshold_set, METH_VARARGS, " use table computation or on-the-fly?"},
+	 { "IndexIVFPQ_scan_table_threshold_get", _wrap_IndexIVFPQ_scan_table_threshold_get, METH_O, " use table computation or on-the-fly?"},
+	 { "IndexIVFPQ_polysemous_ht_set", _wrap_IndexIVFPQ_polysemous_ht_set, METH_VARARGS, " Hamming thresh for polysemous filtering"},
+	 { "IndexIVFPQ_polysemous_ht_get", _wrap_IndexIVFPQ_polysemous_ht_get, METH_O, " Hamming thresh for polysemous filtering"},
+	 { "IndexIVFPQ_use_precomputed_table_set", _wrap_IndexIVFPQ_use_precomputed_table_set, METH_VARARGS, "\n"
+		" Precompute table that speed up query preprocessing at some\n"
+		"memory cost (used only for by_residual with L2 metric)\n"
+		""},
+	 { "IndexIVFPQ_use_precomputed_table_get", _wrap_IndexIVFPQ_use_precomputed_table_get, METH_O, "\n"
+		" Precompute table that speed up query preprocessing at some\n"
+		"memory cost (used only for by_residual with L2 metric)\n"
+		""},
+	 { "IndexIVFPQ_precomputed_table_set", _wrap_IndexIVFPQ_precomputed_table_set, METH_VARARGS, "\n"
+		"if use_precompute_table\n"
+		"size nlist * pq.M * pq.ksub\n"
+		""},
+	 { "IndexIVFPQ_precomputed_table_get", _wrap_IndexIVFPQ_precomputed_table_get, METH_O, "\n"
+		"if use_precompute_table\n"
+		"size nlist * pq.M * pq.ksub\n"
+		""},
+	 { "IndexIVFPQ_encode_vectors", _wrap_IndexIVFPQ_encode_vectors, METH_VARARGS, NULL},
+	 { "IndexIVFPQ_sa_decode", _wrap_IndexIVFPQ_sa_decode, METH_VARARGS, NULL},
+	 { "IndexIVFPQ_add_core", _wrap_IndexIVFPQ_add_core, METH_VARARGS, NULL},
+	 { "IndexIVFPQ_add_core_o", _wrap_IndexIVFPQ_add_core_o, METH_VARARGS, "\n"
+		"same as add_core, also:\n"
+		"- output 2nd level residuals if residuals_2 != NULL\n"
+		"- accepts precomputed_idx = nullptr\n"
+		""},
+	 { "IndexIVFPQ_train_residual", _wrap_IndexIVFPQ_train_residual, METH_VARARGS, " trains the product quantizer"},
+	 { "IndexIVFPQ_train_residual_o", _wrap_IndexIVFPQ_train_residual_o, METH_VARARGS, " same as train_residual, also output 2nd level residuals"},
+	 { "IndexIVFPQ_reconstruct_from_offset", _wrap_IndexIVFPQ_reconstruct_from_offset, METH_VARARGS, NULL},
+	 { "IndexIVFPQ_find_duplicates", _wrap_IndexIVFPQ_find_duplicates, METH_VARARGS, "\n"
+		" Find exact duplicates in the dataset.\n"
+		"\n"
+		"the duplicates are returned in pre-allocated arrays (see the\n"
+		"max sizes).\n"
+		"\n"
+		":type lims: int\n"
+		":param lims:   limits between groups of duplicates\n"
+		"                   (max size ntotal / 2 + 1)\n"
+		":type ids: int\n"
+		":param ids:    ids[lims[i]] : ids[lims[i+1]-1] is a group of\n"
+		"                   duplicates (max size ntotal)\n"
+		":rtype: int\n"
+		":return: n      number of groups found\n"
+		""},
+	 { "IndexIVFPQ_encode", _wrap_IndexIVFPQ_encode, METH_VARARGS, NULL},
+	 { "IndexIVFPQ_encode_multiple", _wrap_IndexIVFPQ_encode_multiple, METH_VARARGS, "\n"
+		" Encode multiple vectors\n"
+		"\n"
+		":type n: int\n"
+		":param n:       nb vectors to encode\n"
+		":type keys: int\n"
+		":param keys:    posting list ids for those vectors (size n)\n"
+		":type x: float\n"
+		":param x:       vectors (size n * d)\n"
+		":type codes: uint8_t\n"
+		":param codes:   output codes (size n * code_size)\n"
+		":type compute_keys: boolean, optional\n"
+		":param compute_keys:  if false, assume keys are precomputed,\n"
+		"                         otherwise compute them\n"
+		""},
+	 { "IndexIVFPQ_decode_multiple", _wrap_IndexIVFPQ_decode_multiple, METH_VARARGS, " inverse of encode_multiple"},
+	 { "IndexIVFPQ_get_InvertedListScanner", _wrap_IndexIVFPQ_get_InvertedListScanner, METH_VARARGS, NULL},
+	 { "IndexIVFPQ_precompute_table", _wrap_IndexIVFPQ_precompute_table, METH_O, " build precomputed table"},
+	 { "new_IndexIVFPQ", _wrap_new_IndexIVFPQ, METH_VARARGS, NULL},
+	 { "delete_IndexIVFPQ", _wrap_delete_IndexIVFPQ, METH_O, NULL},
+	 { "IndexIVFPQ_swigregister", IndexIVFPQ_swigregister, METH_O, NULL},
+	 { "IndexIVFPQ_swiginit", IndexIVFPQ_swiginit, METH_VARARGS, NULL},
+	 { "initialize_IVFPQ_precomputed_table", _wrap_initialize_IVFPQ_precomputed_table, METH_VARARGS, "\n"
+		" Pre-compute distance tables for IVFPQ with by-residual and METRIC_L2\n"
+		"\n"
+		":type use_precomputed_table: int\n"
+		":param use_precomputed_table: (I/O)\n"
+		"           =-1: force disable\n"
+		"           =0: decide heuristically (default: use tables only if they are\n"
+		"               < precomputed_tables_max_bytes), set use_precomputed_table on\n"
+		"    output =1: tables that work for all quantizers (size 256 * nlist * M) =2:\n"
+		"    specific version for MultiIndexQuantizer (much more compact)\n"
+		":type precomputed_table: faiss::AlignedTable< float,32 >\n"
+		":param precomputed_table: precomputed table to initialize\n"
+		""},
+	 { "IndexIVFPQStats_nrefine_set", _wrap_IndexIVFPQStats_nrefine_set, METH_VARARGS, " nb of refines (IVFPQR)"},
+	 { "IndexIVFPQStats_nrefine_get", _wrap_IndexIVFPQStats_nrefine_get, METH_O, " nb of refines (IVFPQR)"},
+	 { "IndexIVFPQStats_n_hamming_pass_set", _wrap_IndexIVFPQStats_n_hamming_pass_set, METH_VARARGS, " nb of passed Hamming distance tests (for polysemous)"},
+	 { "IndexIVFPQStats_n_hamming_pass_get", _wrap_IndexIVFPQStats_n_hamming_pass_get, METH_O, " nb of passed Hamming distance tests (for polysemous)"},
+	 { "IndexIVFPQStats_search_cycles_set", _wrap_IndexIVFPQStats_search_cycles_set, METH_VARARGS, NULL},
+	 { "IndexIVFPQStats_search_cycles_get", _wrap_IndexIVFPQStats_search_cycles_get, METH_O, NULL},
+	 { "IndexIVFPQStats_refine_cycles_set", _wrap_IndexIVFPQStats_refine_cycles_set, METH_VARARGS, " only for IVFPQR"},
+	 { "IndexIVFPQStats_refine_cycles_get", _wrap_IndexIVFPQStats_refine_cycles_get, METH_O, " only for IVFPQR"},
+	 { "new_IndexIVFPQStats", _wrap_new_IndexIVFPQStats, METH_NOARGS, NULL},
+	 { "IndexIVFPQStats_reset", _wrap_IndexIVFPQStats_reset, METH_O, NULL},
+	 { "delete_IndexIVFPQStats", _wrap_delete_IndexIVFPQStats, METH_O, NULL},
+	 { "IndexIVFPQStats_swigregister", IndexIVFPQStats_swigregister, METH_O, NULL},
+	 { "IndexIVFPQStats_swiginit", IndexIVFPQStats_swiginit, METH_VARARGS, NULL},
+	 { "IndexIVFPQR_refine_pq_set", _wrap_IndexIVFPQR_refine_pq_set, METH_VARARGS, " 3rd level quantizer"},
+	 { "IndexIVFPQR_refine_pq_get", _wrap_IndexIVFPQR_refine_pq_get, METH_O, " 3rd level quantizer"},
+	 { "IndexIVFPQR_refine_codes_set", _wrap_IndexIVFPQR_refine_codes_set, METH_VARARGS, " corresponding codes"},
+	 { "IndexIVFPQR_refine_codes_get", _wrap_IndexIVFPQR_refine_codes_get, METH_O, " corresponding codes"},
+	 { "IndexIVFPQR_k_factor_set", _wrap_IndexIVFPQR_k_factor_set, METH_VARARGS, " factor between k requested in search and the k requested from the IVFPQ"},
+	 { "IndexIVFPQR_k_factor_get", _wrap_IndexIVFPQR_k_factor_get, METH_O, " factor between k requested in search and the k requested from the IVFPQ"},
+	 { "IndexIVFPQR_reset", _wrap_IndexIVFPQR_reset, METH_O, NULL},
+	 { "IndexIVFPQR_remove_ids", _wrap_IndexIVFPQR_remove_ids, METH_VARARGS, NULL},
+	 { "IndexIVFPQR_train_residual", _wrap_IndexIVFPQR_train_residual, METH_VARARGS, " trains the two product quantizers"},
+	 { "IndexIVFPQR_add_with_ids", _wrap_IndexIVFPQR_add_with_ids, METH_VARARGS, NULL},
+	 { "IndexIVFPQR_add_core", _wrap_IndexIVFPQR_add_core, METH_VARARGS, " same as add_with_ids, but optionally use the precomputed list ids"},
+	 { "IndexIVFPQR_reconstruct_from_offset", _wrap_IndexIVFPQR_reconstruct_from_offset, METH_VARARGS, NULL},
+	 { "IndexIVFPQR_merge_from", _wrap_IndexIVFPQR_merge_from, METH_VARARGS, NULL},
+	 { "IndexIVFPQR_search_preassigned", _wrap_IndexIVFPQR_search_preassigned, METH_VARARGS, NULL},
+	 { "new_IndexIVFPQR", _wrap_new_IndexIVFPQR, METH_VARARGS, NULL},
+	 { "delete_IndexIVFPQR", _wrap_delete_IndexIVFPQR, METH_O, NULL},
+	 { "IndexIVFPQR_swigregister", IndexIVFPQR_swigregister, METH_O, NULL},
+	 { "IndexIVFPQR_swiginit", IndexIVFPQR_swiginit, METH_VARARGS, NULL},
+	 { "Index2Layer_q1_set", _wrap_Index2Layer_q1_set, METH_VARARGS, " first level quantizer"},
+	 { "Index2Layer_q1_get", _wrap_Index2Layer_q1_get, METH_O, " first level quantizer"},
+	 { "Index2Layer_pq_set", _wrap_Index2Layer_pq_set, METH_VARARGS, " second level quantizer is always a PQ"},
+	 { "Index2Layer_pq_get", _wrap_Index2Layer_pq_get, METH_O, " second level quantizer is always a PQ"},
+	 { "Index2Layer_code_size_1_set", _wrap_Index2Layer_code_size_1_set, METH_VARARGS, " size of the code for the first level (ceil(log8(q1.nlist)))"},
+	 { "Index2Layer_code_size_1_get", _wrap_Index2Layer_code_size_1_get, METH_O, " size of the code for the first level (ceil(log8(q1.nlist)))"},
+	 { "Index2Layer_code_size_2_set", _wrap_Index2Layer_code_size_2_set, METH_VARARGS, " size of the code for the second level"},
+	 { "Index2Layer_code_size_2_get", _wrap_Index2Layer_code_size_2_get, METH_O, " size of the code for the second level"},
+	 { "new_Index2Layer", _wrap_new_Index2Layer, METH_VARARGS, NULL},
+	 { "delete_Index2Layer", _wrap_delete_Index2Layer, METH_O, NULL},
+	 { "Index2Layer_train", _wrap_Index2Layer_train, METH_VARARGS, NULL},
+	 { "Index2Layer_search", _wrap_Index2Layer_search, METH_VARARGS, " not implemented"},
+	 { "Index2Layer_get_distance_computer", _wrap_Index2Layer_get_distance_computer, METH_O, NULL},
+	 { "Index2Layer_transfer_to_IVFPQ", _wrap_Index2Layer_transfer_to_IVFPQ, METH_VARARGS, " transfer the flat codes to an IVFPQ index"},
+	 { "Index2Layer_sa_encode", _wrap_Index2Layer_sa_encode, METH_VARARGS, NULL},
+	 { "Index2Layer_sa_decode", _wrap_Index2Layer_sa_decode, METH_VARARGS, NULL},
+	 { "Index2Layer_swigregister", Index2Layer_swigregister, METH_O, NULL},
+	 { "Index2Layer_swiginit", Index2Layer_swiginit, METH_VARARGS, NULL},
+	 { "IndexPQFastScan_pq_set", _wrap_IndexPQFastScan_pq_set, METH_VARARGS, NULL},
+	 { "IndexPQFastScan_pq_get", _wrap_IndexPQFastScan_pq_get, METH_O, NULL},
+	 { "IndexPQFastScan_implem_set", _wrap_IndexPQFastScan_implem_set, METH_VARARGS, NULL},
+	 { "IndexPQFastScan_implem_get", _wrap_IndexPQFastScan_implem_get, METH_O, NULL},
+	 { "IndexPQFastScan_skip_set", _wrap_IndexPQFastScan_skip_set, METH_VARARGS, NULL},
+	 { "IndexPQFastScan_skip_get", _wrap_IndexPQFastScan_skip_get, METH_O, NULL},
+	 { "IndexPQFastScan_bbs_set", _wrap_IndexPQFastScan_bbs_set, METH_VARARGS, NULL},
+	 { "IndexPQFastScan_bbs_get", _wrap_IndexPQFastScan_bbs_get, METH_O, NULL},
+	 { "IndexPQFastScan_qbs_set", _wrap_IndexPQFastScan_qbs_set, METH_VARARGS, NULL},
+	 { "IndexPQFastScan_qbs_get", _wrap_IndexPQFastScan_qbs_get, METH_O, NULL},
+	 { "IndexPQFastScan_ntotal2_set", _wrap_IndexPQFastScan_ntotal2_set, METH_VARARGS, NULL},
+	 { "IndexPQFastScan_ntotal2_get", _wrap_IndexPQFastScan_ntotal2_get, METH_O, NULL},
+	 { "IndexPQFastScan_M2_set", _wrap_IndexPQFastScan_M2_set, METH_VARARGS, NULL},
+	 { "IndexPQFastScan_M2_get", _wrap_IndexPQFastScan_M2_get, METH_O, NULL},
+	 { "IndexPQFastScan_codes_set", _wrap_IndexPQFastScan_codes_set, METH_VARARGS, NULL},
+	 { "IndexPQFastScan_codes_get", _wrap_IndexPQFastScan_codes_get, METH_O, NULL},
+	 { "IndexPQFastScan_orig_codes_set", _wrap_IndexPQFastScan_orig_codes_set, METH_VARARGS, NULL},
+	 { "IndexPQFastScan_orig_codes_get", _wrap_IndexPQFastScan_orig_codes_get, METH_O, NULL},
+	 { "new_IndexPQFastScan", _wrap_new_IndexPQFastScan, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"build from an existing IndexPQ\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"build from an existing IndexPQ\n"
+		""},
+	 { "IndexPQFastScan_train", _wrap_IndexPQFastScan_train, METH_VARARGS, NULL},
+	 { "IndexPQFastScan_add", _wrap_IndexPQFastScan_add, METH_VARARGS, NULL},
+	 { "IndexPQFastScan_reset", _wrap_IndexPQFastScan_reset, METH_O, NULL},
+	 { "IndexPQFastScan_search", _wrap_IndexPQFastScan_search, METH_VARARGS, NULL},
+	 { "IndexPQFastScan_compute_quantized_LUT", _wrap_IndexPQFastScan_compute_quantized_LUT, METH_VARARGS, NULL},
+	 { "delete_IndexPQFastScan", _wrap_delete_IndexPQFastScan, METH_O, NULL},
+	 { "IndexPQFastScan_swigregister", IndexPQFastScan_swigregister, METH_O, NULL},
+	 { "IndexPQFastScan_swiginit", IndexPQFastScan_swiginit, METH_VARARGS, NULL},
+	 { "FastScanStats_t0_set", _wrap_FastScanStats_t0_set, METH_VARARGS, NULL},
+	 { "FastScanStats_t0_get", _wrap_FastScanStats_t0_get, METH_O, NULL},
+	 { "FastScanStats_t1_set", _wrap_FastScanStats_t1_set, METH_VARARGS, NULL},
+	 { "FastScanStats_t1_get", _wrap_FastScanStats_t1_get, METH_O, NULL},
+	 { "FastScanStats_t2_set", _wrap_FastScanStats_t2_set, METH_VARARGS, NULL},
+	 { "FastScanStats_t2_get", _wrap_FastScanStats_t2_get, METH_O, NULL},
+	 { "FastScanStats_t3_set", _wrap_FastScanStats_t3_set, METH_VARARGS, NULL},
+	 { "FastScanStats_t3_get", _wrap_FastScanStats_t3_get, METH_O, NULL},
+	 { "new_FastScanStats", _wrap_new_FastScanStats, METH_NOARGS, NULL},
+	 { "FastScanStats_reset", _wrap_FastScanStats_reset, METH_O, NULL},
+	 { "delete_FastScanStats", _wrap_delete_FastScanStats, METH_O, NULL},
+	 { "FastScanStats_swigregister", FastScanStats_swigregister, METH_O, NULL},
+	 { "FastScanStats_swiginit", FastScanStats_swiginit, METH_VARARGS, NULL},
+	 { "IndexIVFPQFastScan_by_residual_set", _wrap_IndexIVFPQFastScan_by_residual_set, METH_VARARGS, " Encode residual or plain vector?"},
+	 { "IndexIVFPQFastScan_by_residual_get", _wrap_IndexIVFPQFastScan_by_residual_get, METH_O, " Encode residual or plain vector?"},
+	 { "IndexIVFPQFastScan_pq_set", _wrap_IndexIVFPQFastScan_pq_set, METH_VARARGS, " produces the codes"},
+	 { "IndexIVFPQFastScan_pq_get", _wrap_IndexIVFPQFastScan_pq_get, METH_O, " produces the codes"},
+	 { "IndexIVFPQFastScan_bbs_set", _wrap_IndexIVFPQFastScan_bbs_set, METH_VARARGS, NULL},
+	 { "IndexIVFPQFastScan_bbs_get", _wrap_IndexIVFPQFastScan_bbs_get, METH_O, NULL},
+	 { "IndexIVFPQFastScan_M2_set", _wrap_IndexIVFPQFastScan_M2_set, METH_VARARGS, NULL},
+	 { "IndexIVFPQFastScan_M2_get", _wrap_IndexIVFPQFastScan_M2_get, METH_O, NULL},
+	 { "IndexIVFPQFastScan_use_precomputed_table_set", _wrap_IndexIVFPQFastScan_use_precomputed_table_set, METH_VARARGS, " precomputed tables management"},
+	 { "IndexIVFPQFastScan_use_precomputed_table_get", _wrap_IndexIVFPQFastScan_use_precomputed_table_get, METH_O, " precomputed tables management"},
+	 { "IndexIVFPQFastScan_precomputed_table_set", _wrap_IndexIVFPQFastScan_precomputed_table_set, METH_VARARGS, " if use_precompute_table size (nlist, pq.M, pq.ksub)"},
+	 { "IndexIVFPQFastScan_precomputed_table_get", _wrap_IndexIVFPQFastScan_precomputed_table_get, METH_O, " if use_precompute_table size (nlist, pq.M, pq.ksub)"},
+	 { "IndexIVFPQFastScan_implem_set", _wrap_IndexIVFPQFastScan_implem_set, METH_VARARGS, NULL},
+	 { "IndexIVFPQFastScan_implem_get", _wrap_IndexIVFPQFastScan_implem_get, METH_O, NULL},
+	 { "IndexIVFPQFastScan_skip_set", _wrap_IndexIVFPQFastScan_skip_set, METH_VARARGS, NULL},
+	 { "IndexIVFPQFastScan_skip_get", _wrap_IndexIVFPQFastScan_skip_get, METH_O, NULL},
+	 { "IndexIVFPQFastScan_qbs_set", _wrap_IndexIVFPQFastScan_qbs_set, METH_VARARGS, NULL},
+	 { "IndexIVFPQFastScan_qbs_get", _wrap_IndexIVFPQFastScan_qbs_get, METH_O, NULL},
+	 { "IndexIVFPQFastScan_qbs2_set", _wrap_IndexIVFPQFastScan_qbs2_set, METH_VARARGS, NULL},
+	 { "IndexIVFPQFastScan_qbs2_get", _wrap_IndexIVFPQFastScan_qbs2_get, METH_O, NULL},
+	 { "new_IndexIVFPQFastScan", _wrap_new_IndexIVFPQFastScan, METH_VARARGS, NULL},
+	 { "IndexIVFPQFastScan_orig_invlists_set", _wrap_IndexIVFPQFastScan_orig_invlists_set, METH_VARARGS, " orig's inverted lists (for debugging)"},
+	 { "IndexIVFPQFastScan_orig_invlists_get", _wrap_IndexIVFPQFastScan_orig_invlists_get, METH_O, " orig's inverted lists (for debugging)"},
+	 { "IndexIVFPQFastScan_train_residual", _wrap_IndexIVFPQFastScan_train_residual, METH_VARARGS, NULL},
+	 { "IndexIVFPQFastScan_precompute_table", _wrap_IndexIVFPQFastScan_precompute_table, METH_O, " build precomputed table, possibly updating use_precomputed_table"},
+	 { "IndexIVFPQFastScan_encode_vectors", _wrap_IndexIVFPQFastScan_encode_vectors, METH_VARARGS, "\n"
+		"same as the regular IVFPQ encoder. The codes are not reorganized by\n"
+		"blocks a that point\n"
+		""},
+	 { "IndexIVFPQFastScan_add_with_ids", _wrap_IndexIVFPQFastScan_add_with_ids, METH_VARARGS, NULL},
+	 { "IndexIVFPQFastScan_search", _wrap_IndexIVFPQFastScan_search, METH_VARARGS, NULL},
+	 { "IndexIVFPQFastScan_compute_LUT", _wrap_IndexIVFPQFastScan_compute_LUT, METH_VARARGS, NULL},
+	 { "IndexIVFPQFastScan_compute_LUT_uint8", _wrap_IndexIVFPQFastScan_compute_LUT_uint8, METH_VARARGS, NULL},
+	 { "delete_IndexIVFPQFastScan", _wrap_delete_IndexIVFPQFastScan, METH_O, NULL},
+	 { "IndexIVFPQFastScan_swigregister", IndexIVFPQFastScan_swigregister, METH_O, NULL},
+	 { "IndexIVFPQFastScan_swiginit", IndexIVFPQFastScan_swiginit, METH_VARARGS, NULL},
+	 { "IVFFastScanStats_times_set", _wrap_IVFFastScanStats_times_set, METH_VARARGS, NULL},
+	 { "IVFFastScanStats_times_get", _wrap_IVFFastScanStats_times_get, METH_O, NULL},
+	 { "IVFFastScanStats_t_compute_distance_tables_set", _wrap_IVFFastScanStats_t_compute_distance_tables_set, METH_VARARGS, NULL},
+	 { "IVFFastScanStats_t_compute_distance_tables_get", _wrap_IVFFastScanStats_t_compute_distance_tables_get, METH_O, NULL},
+	 { "IVFFastScanStats_t_round_set", _wrap_IVFFastScanStats_t_round_set, METH_VARARGS, NULL},
+	 { "IVFFastScanStats_t_round_get", _wrap_IVFFastScanStats_t_round_get, METH_O, NULL},
+	 { "IVFFastScanStats_t_copy_pack_set", _wrap_IVFFastScanStats_t_copy_pack_set, METH_VARARGS, NULL},
+	 { "IVFFastScanStats_t_copy_pack_get", _wrap_IVFFastScanStats_t_copy_pack_get, METH_O, NULL},
+	 { "IVFFastScanStats_t_scan_set", _wrap_IVFFastScanStats_t_scan_set, METH_VARARGS, NULL},
+	 { "IVFFastScanStats_t_scan_get", _wrap_IVFFastScanStats_t_scan_get, METH_O, NULL},
+	 { "IVFFastScanStats_t_to_flat_set", _wrap_IVFFastScanStats_t_to_flat_set, METH_VARARGS, NULL},
+	 { "IVFFastScanStats_t_to_flat_get", _wrap_IVFFastScanStats_t_to_flat_get, METH_O, NULL},
+	 { "IVFFastScanStats_reservoir_times_set", _wrap_IVFFastScanStats_reservoir_times_set, METH_VARARGS, NULL},
+	 { "IVFFastScanStats_reservoir_times_get", _wrap_IVFFastScanStats_reservoir_times_get, METH_O, NULL},
+	 { "IVFFastScanStats_Mcy_at", _wrap_IVFFastScanStats_Mcy_at, METH_VARARGS, NULL},
+	 { "IVFFastScanStats_Mcy_reservoir_at", _wrap_IVFFastScanStats_Mcy_reservoir_at, METH_VARARGS, NULL},
+	 { "new_IVFFastScanStats", _wrap_new_IVFFastScanStats, METH_NOARGS, NULL},
+	 { "IVFFastScanStats_reset", _wrap_IVFFastScanStats_reset, METH_O, NULL},
+	 { "delete_IVFFastScanStats", _wrap_delete_IVFFastScanStats, METH_O, NULL},
+	 { "IVFFastScanStats_swigregister", IVFFastScanStats_swigregister, METH_O, NULL},
+	 { "IVFFastScanStats_swiginit", IVFFastScanStats_swiginit, METH_VARARGS, NULL},
+	 { "round_uint8_per_column", _wrap_round_uint8_per_column, METH_VARARGS, "\n"
+		" Functions to quantize PQ floating-point Look Up Tables (LUT) to uint8, and\n"
+		"biases to uint16. The accumulation is supposed to take place in uint16.\n"
+		"The quantization coefficients are float (a, b) such that\n"
+		"\n"
+		"     original_value = quantized_value * a / b\n"
+		"\n"
+		"The hardest part of the quantization is with multiple LUTs that need to be\n"
+		"added up together. In that case, coefficient a has to be chosen so that\n"
+		"the sum fits in a uint16 accumulator.\n"
+		""},
+	 { "round_uint8_per_column_multi", _wrap_round_uint8_per_column_multi, METH_VARARGS, NULL},
+	 { "quantize_LUT_and_bias", _wrap_quantize_LUT_and_bias, METH_VARARGS, "\n"
+		" LUT quantization to uint8 and bias to uint16.\n"
+		"\n"
+		"(nprobe, M, ksub, lut_is_3d) determine the size of the the LUT\n"
+		"\n"
+		" LUT input:\n"
+		" - 2D size (M, ksub): single matrix per probe (lut_is_3d=false)\n"
+		" - 3D size (nprobe, M, ksub): separate LUT per probe (lut_is_3d=true)\n"
+		" bias input:\n"
+		" - nullptr: bias is 0\n"
+		" - size (nprobe): one bias per probe\n"
+		" Output:\n"
+		" - LUTq uint8 version of the LUT (M size is rounded up to M2)\n"
+		" - biasq (or nullptr): uint16 version of the LUT\n"
+		" - a, b: scalars to approximate the true distance\n"
+		""},
+	 { "IndexBinary_d_set", _wrap_IndexBinary_d_set, METH_VARARGS, " vector dimension"},
+	 { "IndexBinary_d_get", _wrap_IndexBinary_d_get, METH_O, " vector dimension"},
+	 { "IndexBinary_code_size_set", _wrap_IndexBinary_code_size_set, METH_VARARGS, " number of bytes per vector ( = d / 8 )"},
+	 { "IndexBinary_code_size_get", _wrap_IndexBinary_code_size_get, METH_O, " number of bytes per vector ( = d / 8 )"},
+	 { "IndexBinary_ntotal_set", _wrap_IndexBinary_ntotal_set, METH_VARARGS, " total nb of indexed vectors"},
+	 { "IndexBinary_ntotal_get", _wrap_IndexBinary_ntotal_get, METH_O, " total nb of indexed vectors"},
+	 { "IndexBinary_verbose_set", _wrap_IndexBinary_verbose_set, METH_VARARGS, " verbosity level"},
+	 { "IndexBinary_verbose_get", _wrap_IndexBinary_verbose_get, METH_O, " verbosity level"},
+	 { "IndexBinary_is_trained_set", _wrap_IndexBinary_is_trained_set, METH_VARARGS, "\n"
+		"set if the Index does not require training, or if training is done\n"
+		"already\n"
+		""},
+	 { "IndexBinary_is_trained_get", _wrap_IndexBinary_is_trained_get, METH_O, "\n"
+		"set if the Index does not require training, or if training is done\n"
+		"already\n"
+		""},
+	 { "IndexBinary_metric_type_set", _wrap_IndexBinary_metric_type_set, METH_VARARGS, " type of metric this index uses for search"},
+	 { "IndexBinary_metric_type_get", _wrap_IndexBinary_metric_type_get, METH_O, " type of metric this index uses for search"},
+	 { "delete_IndexBinary", _wrap_delete_IndexBinary, METH_O, NULL},
+	 { "IndexBinary_train", _wrap_IndexBinary_train, METH_VARARGS, "\n"
+		" Perform training on a representative set of vectors.\n"
+		"\n"
+		":type n: int\n"
+		":param n:      nb of training vectors\n"
+		":type x: uint8_t\n"
+		":param x:      training vecors, size n * d / 8\n"
+		""},
+	 { "IndexBinary_add", _wrap_IndexBinary_add, METH_VARARGS, "\n"
+		" Add n vectors of dimension d to the index.\n"
+		"\n"
+		"Vectors are implicitly assigned labels ntotal .. ntotal + n - 1\n"
+		":type x: uint8_t\n"
+		":param x:      input matrix, size n * d / 8\n"
+		""},
+	 { "IndexBinary_add_with_ids", _wrap_IndexBinary_add_with_ids, METH_VARARGS, "\n"
+		" Same as add, but stores xids instead of sequential ids.\n"
+		"\n"
+		"The default implementation fails with an assertion, as it is\n"
+		"not supported by all indexes.\n"
+		"\n"
+		":type xids: int\n"
+		":param xids: if non-null, ids to store for the vectors (size n)\n"
+		""},
+	 { "IndexBinary_search", _wrap_IndexBinary_search, METH_VARARGS, "\n"
+		" Query n vectors of dimension d to the index.\n"
+		"\n"
+		"return at most k vectors. If there are not enough results for a\n"
+		"query, the result array is padded with -1s.\n"
+		"\n"
+		":type x: uint8_t\n"
+		":param x:           input vectors to search, size n * d / 8\n"
+		":type labels: int\n"
+		":param labels:      output labels of the NNs, size n*k\n"
+		":type distances: int\n"
+		":param distances:   output pairwise distances, size n*k\n"
+		""},
+	 { "IndexBinary_range_search", _wrap_IndexBinary_range_search, METH_VARARGS, "\n"
+		" Query n vectors of dimension d to the index.\n"
+		"\n"
+		"return all vectors with distance < radius. Note that many indexes\n"
+		"do not implement the range_search (only the k-NN search is\n"
+		"mandatory). The distances are converted to float to reuse the\n"
+		"RangeSearchResult structure, but they are integer. By convention,\n"
+		"only distances < radius (strict comparison) are returned,\n"
+		"ie. radius = 0 does not return any result and 1 returns only\n"
+		"exact same vectors.\n"
+		"\n"
+		":type x: uint8_t\n"
+		":param x:           input vectors to search, size n * d / 8\n"
+		":type radius: int\n"
+		":param radius:      search radius\n"
+		":type result: :py:class:`RangeSearchResult`\n"
+		":param result:      result table\n"
+		""},
+	 { "IndexBinary_assign", _wrap_IndexBinary_assign, METH_VARARGS, "\n"
+		" Return the indexes of the k vectors closest to the query x.\n"
+		"\n"
+		"This function is identical to search but only returns labels of\n"
+		"neighbors.\n"
+		":type x: uint8_t\n"
+		":param x:           input vectors to search, size n * d / 8\n"
+		":type labels: int\n"
+		":param labels:      output labels of the NNs, size n*k\n"
+		""},
+	 { "IndexBinary_reset", _wrap_IndexBinary_reset, METH_O, " Removes all elements from the database."},
+	 { "IndexBinary_remove_ids", _wrap_IndexBinary_remove_ids, METH_VARARGS, " Removes IDs from the index. Not supported by all indexes."},
+	 { "IndexBinary_reconstruct", _wrap_IndexBinary_reconstruct, METH_VARARGS, "\n"
+		" Reconstruct a stored vector.\n"
+		"\n"
+		"This function may not be defined for some indexes.\n"
+		":type key: int\n"
+		":param key:         id of the vector to reconstruct\n"
+		":type recons: uint8_t\n"
+		":param recons:      reconstucted vector (size d / 8)\n"
+		""},
+	 { "IndexBinary_reconstruct_n", _wrap_IndexBinary_reconstruct_n, METH_VARARGS, "\n"
+		" Reconstruct vectors i0 to i0 + ni - 1.\n"
+		"\n"
+		"This function may not be defined for some indexes.\n"
+		":type recons: uint8_t\n"
+		":param recons:      reconstucted vectors (size ni * d / 8)\n"
+		""},
+	 { "IndexBinary_search_and_reconstruct", _wrap_IndexBinary_search_and_reconstruct, METH_VARARGS, "\n"
+		" Similar to search, but also reconstructs the stored vectors (or an\n"
+		"approximation in the case of lossy coding) for the search results.\n"
+		"\n"
+		"If there are not enough results for a query, the resulting array\n"
+		"is padded with -1s.\n"
+		"\n"
+		":type recons: uint8_t\n"
+		":param recons:      reconstructed vectors size (n, k, d)\n"
+		""},
+	 { "IndexBinary_display", _wrap_IndexBinary_display, METH_O, " Display the actual class name and some more info."},
+	 { "IndexBinary_swigregister", IndexBinary_swigregister, METH_O, NULL},
+	 { "IndexBinaryFlat_xb_set", _wrap_IndexBinaryFlat_xb_set, METH_VARARGS, " database vectors, size ntotal * d / 8"},
+	 { "IndexBinaryFlat_xb_get", _wrap_IndexBinaryFlat_xb_get, METH_O, " database vectors, size ntotal * d / 8"},
+	 { "IndexBinaryFlat_use_heap_set", _wrap_IndexBinaryFlat_use_heap_set, METH_VARARGS, "\n"
+		" Select between using a heap or counting to select the k smallest values\n"
+		"when scanning inverted lists.\n"
+		""},
+	 { "IndexBinaryFlat_use_heap_get", _wrap_IndexBinaryFlat_use_heap_get, METH_O, "\n"
+		" Select between using a heap or counting to select the k smallest values\n"
+		"when scanning inverted lists.\n"
+		""},
+	 { "IndexBinaryFlat_query_batch_size_set", _wrap_IndexBinaryFlat_query_batch_size_set, METH_VARARGS, NULL},
+	 { "IndexBinaryFlat_query_batch_size_get", _wrap_IndexBinaryFlat_query_batch_size_get, METH_O, NULL},
+	 { "IndexBinaryFlat_add", _wrap_IndexBinaryFlat_add, METH_VARARGS, NULL},
+	 { "IndexBinaryFlat_reset", _wrap_IndexBinaryFlat_reset, METH_O, NULL},
+	 { "IndexBinaryFlat_search", _wrap_IndexBinaryFlat_search, METH_VARARGS, NULL},
+	 { "IndexBinaryFlat_range_search", _wrap_IndexBinaryFlat_range_search, METH_VARARGS, NULL},
+	 { "IndexBinaryFlat_reconstruct", _wrap_IndexBinaryFlat_reconstruct, METH_VARARGS, NULL},
+	 { "IndexBinaryFlat_remove_ids", _wrap_IndexBinaryFlat_remove_ids, METH_VARARGS, "\n"
+		" Remove some ids. Note that because of the indexing structure,\n"
+		"the semantics of this operation are different from the usual ones:\n"
+		"the new ids are shifted.\n"
+		""},
+	 { "new_IndexBinaryFlat", _wrap_new_IndexBinaryFlat, METH_VARARGS, NULL},
+	 { "delete_IndexBinaryFlat", _wrap_delete_IndexBinaryFlat, METH_O, NULL},
+	 { "IndexBinaryFlat_swigregister", IndexBinaryFlat_swigregister, METH_O, NULL},
+	 { "IndexBinaryFlat_swiginit", IndexBinaryFlat_swiginit, METH_VARARGS, NULL},
+	 { "IndexBinaryIVF_invlists_set", _wrap_IndexBinaryIVF_invlists_set, METH_VARARGS, " Access to the actual data"},
+	 { "IndexBinaryIVF_invlists_get", _wrap_IndexBinaryIVF_invlists_get, METH_O, " Access to the actual data"},
+	 { "IndexBinaryIVF_own_invlists_set", _wrap_IndexBinaryIVF_own_invlists_set, METH_VARARGS, NULL},
+	 { "IndexBinaryIVF_own_invlists_get", _wrap_IndexBinaryIVF_own_invlists_get, METH_O, NULL},
+	 { "IndexBinaryIVF_nprobe_set", _wrap_IndexBinaryIVF_nprobe_set, METH_VARARGS, " number of probes at query time"},
+	 { "IndexBinaryIVF_nprobe_get", _wrap_IndexBinaryIVF_nprobe_get, METH_O, " number of probes at query time"},
+	 { "IndexBinaryIVF_max_codes_set", _wrap_IndexBinaryIVF_max_codes_set, METH_VARARGS, " max nb of codes to visit to do a query"},
+	 { "IndexBinaryIVF_max_codes_get", _wrap_IndexBinaryIVF_max_codes_get, METH_O, " max nb of codes to visit to do a query"},
+	 { "IndexBinaryIVF_use_heap_set", _wrap_IndexBinaryIVF_use_heap_set, METH_VARARGS, "\n"
+		" Select between using a heap or counting to select the k smallest values\n"
+		"when scanning inverted lists.\n"
+		""},
+	 { "IndexBinaryIVF_use_heap_get", _wrap_IndexBinaryIVF_use_heap_get, METH_O, "\n"
+		" Select between using a heap or counting to select the k smallest values\n"
+		"when scanning inverted lists.\n"
+		""},
+	 { "IndexBinaryIVF_direct_map_set", _wrap_IndexBinaryIVF_direct_map_set, METH_VARARGS, " map for direct access to the elements. Enables reconstruct()."},
+	 { "IndexBinaryIVF_direct_map_get", _wrap_IndexBinaryIVF_direct_map_get, METH_O, " map for direct access to the elements. Enables reconstruct()."},
+	 { "IndexBinaryIVF_quantizer_set", _wrap_IndexBinaryIVF_quantizer_set, METH_VARARGS, " quantizer that maps vectors to inverted lists"},
+	 { "IndexBinaryIVF_quantizer_get", _wrap_IndexBinaryIVF_quantizer_get, METH_O, " quantizer that maps vectors to inverted lists"},
+	 { "IndexBinaryIVF_nlist_set", _wrap_IndexBinaryIVF_nlist_set, METH_VARARGS, " number of possible key values"},
+	 { "IndexBinaryIVF_nlist_get", _wrap_IndexBinaryIVF_nlist_get, METH_O, " number of possible key values"},
+	 { "IndexBinaryIVF_own_fields_set", _wrap_IndexBinaryIVF_own_fields_set, METH_VARARGS, " whether object owns the quantizer"},
+	 { "IndexBinaryIVF_own_fields_get", _wrap_IndexBinaryIVF_own_fields_get, METH_O, " whether object owns the quantizer"},
+	 { "IndexBinaryIVF_cp_set", _wrap_IndexBinaryIVF_cp_set, METH_VARARGS, " to override default clustering params"},
+	 { "IndexBinaryIVF_cp_get", _wrap_IndexBinaryIVF_cp_get, METH_O, " to override default clustering params"},
+	 { "IndexBinaryIVF_clustering_index_set", _wrap_IndexBinaryIVF_clustering_index_set, METH_VARARGS, " to override index used during clustering"},
+	 { "IndexBinaryIVF_clustering_index_get", _wrap_IndexBinaryIVF_clustering_index_get, METH_O, " to override index used during clustering"},
+	 { "new_IndexBinaryIVF", _wrap_new_IndexBinaryIVF, METH_VARARGS, "\n"
+		" The Inverted file takes a quantizer (an IndexBinary) on input,\n"
+		"which implements the function mapping a vector to a list\n"
+		"identifier. The pointer is borrowed: the quantizer should not\n"
+		"be deleted while the IndexBinaryIVF is in use.\n"
+		""},
+	 { "delete_IndexBinaryIVF", _wrap_delete_IndexBinaryIVF, METH_O, NULL},
+	 { "IndexBinaryIVF_reset", _wrap_IndexBinaryIVF_reset, METH_O, NULL},
+	 { "IndexBinaryIVF_train", _wrap_IndexBinaryIVF_train, METH_VARARGS, " Trains the quantizer"},
+	 { "IndexBinaryIVF_add", _wrap_IndexBinaryIVF_add, METH_VARARGS, NULL},
+	 { "IndexBinaryIVF_add_with_ids", _wrap_IndexBinaryIVF_add_with_ids, METH_VARARGS, NULL},
+	 { "IndexBinaryIVF_add_core", _wrap_IndexBinaryIVF_add_core, METH_VARARGS, "\n"
+		" Implementation of vector addition where the vector assignments are\n"
+		"predefined.\n"
+		"\n"
+		":type precomputed_idx: int\n"
+		":param precomputed_idx:    quantization indices for the input vectors\n"
+		"    (size n)\n"
+		""},
+	 { "IndexBinaryIVF_search_preassigned", _wrap_IndexBinaryIVF_search_preassigned, METH_VARARGS, "\n"
+		" Search a set of vectors, that are pre-quantized by the IVF\n"
+		" quantizer. Fill in the corresponding heaps with the query\n"
+		" results. search() calls this.\n"
+		"\n"
+		":type n: int\n"
+		":param n:      nb of vectors to query\n"
+		":type x: uint8_t\n"
+		":param x:      query vectors, size nx * d\n"
+		":type assign: int\n"
+		":param assign: coarse quantization indices, size nx * nprobe\n"
+		":type centroid_dis: int\n"
+		":param centroid_dis:\n"
+		"                  distances to coarse centroids, size nx * nprobe\n"
+		":param distance:\n"
+		"                  output distances, size n * k\n"
+		":type labels: int\n"
+		":param labels: output labels, size n * k\n"
+		":type store_pairs: boolean\n"
+		":param store_pairs: store inv list index + inv list offset\n"
+		"                        instead in upper/lower 32 bit of result,\n"
+		"                        instead of ids (used for reranking).\n"
+		":type params: :py:class:`IVFSearchParameters`, optional\n"
+		":param params: used to override the object's search parameters\n"
+		""},
+	 { "IndexBinaryIVF_get_InvertedListScanner", _wrap_IndexBinaryIVF_get_InvertedListScanner, METH_VARARGS, NULL},
+	 { "IndexBinaryIVF_search", _wrap_IndexBinaryIVF_search, METH_VARARGS, " assign the vectors, then call search_preassign"},
+	 { "IndexBinaryIVF_range_search", _wrap_IndexBinaryIVF_range_search, METH_VARARGS, NULL},
+	 { "IndexBinaryIVF_range_search_preassigned", _wrap_IndexBinaryIVF_range_search_preassigned, METH_VARARGS, NULL},
+	 { "IndexBinaryIVF_reconstruct", _wrap_IndexBinaryIVF_reconstruct, METH_VARARGS, NULL},
+	 { "IndexBinaryIVF_reconstruct_n", _wrap_IndexBinaryIVF_reconstruct_n, METH_VARARGS, "\n"
+		" Reconstruct a subset of the indexed vectors.\n"
+		"\n"
+		"Overrides default implementation to bypass reconstruct() which requires\n"
+		"direct_map to be maintained.\n"
+		"\n"
+		":type i0: int\n"
+		":param i0:     first vector to reconstruct\n"
+		":type ni: int\n"
+		":param ni:     nb of vectors to reconstruct\n"
+		":type recons: uint8_t\n"
+		":param recons: output array of reconstructed vectors, size ni * d / 8\n"
+		""},
+	 { "IndexBinaryIVF_search_and_reconstruct", _wrap_IndexBinaryIVF_search_and_reconstruct, METH_VARARGS, "\n"
+		" Similar to search, but also reconstructs the stored vectors (or an\n"
+		"approximation in the case of lossy coding) for the search results.\n"
+		"\n"
+		"Overrides default implementation to avoid having to maintain direct_map\n"
+		"and instead fetch the code offsets through the `store_pairs` flag in\n"
+		"search_preassigned().\n"
+		"\n"
+		":type recons: uint8_t\n"
+		":param recons:      reconstructed vectors size (n, k, d / 8)\n"
+		""},
+	 { "IndexBinaryIVF_reconstruct_from_offset", _wrap_IndexBinaryIVF_reconstruct_from_offset, METH_VARARGS, "\n"
+		" Reconstruct a vector given the location in terms of (inv list index +\n"
+		"inv list offset) instead of the id.\n"
+		"\n"
+		"Useful for reconstructing when the direct_map is not maintained and\n"
+		"the inv list offset is computed by search_preassigned() with\n"
+		"`store_pairs` set.\n"
+		""},
+	 { "IndexBinaryIVF_remove_ids", _wrap_IndexBinaryIVF_remove_ids, METH_VARARGS, " Dataset manipulation functions"},
+	 { "IndexBinaryIVF_merge_from", _wrap_IndexBinaryIVF_merge_from, METH_VARARGS, "\n"
+		" moves the entries from another dataset to self. On output,\n"
+		"other is empty. add_id is added to all moved ids (for\n"
+		"sequential ids, this would be this->ntotal\n"
+		""},
+	 { "IndexBinaryIVF_get_list_size", _wrap_IndexBinaryIVF_get_list_size, METH_VARARGS, NULL},
+	 { "IndexBinaryIVF_make_direct_map", _wrap_IndexBinaryIVF_make_direct_map, METH_VARARGS, "\n"
+		" intialize a direct map\n"
+		"\n"
+		":type new_maintain_direct_map: boolean, optional\n"
+		":param new_maintain_direct_map:    if true, create a direct map,\n"
+		"                                      else clear it\n"
+		""},
+	 { "IndexBinaryIVF_set_direct_map_type", _wrap_IndexBinaryIVF_set_direct_map_type, METH_VARARGS, NULL},
+	 { "IndexBinaryIVF_replace_invlists", _wrap_IndexBinaryIVF_replace_invlists, METH_VARARGS, NULL},
+	 { "IndexBinaryIVF_swigregister", IndexBinaryIVF_swigregister, METH_O, NULL},
+	 { "IndexBinaryIVF_swiginit", IndexBinaryIVF_swiginit, METH_VARARGS, NULL},
+	 { "IndexBinaryFromFloat_index_set", _wrap_IndexBinaryFromFloat_index_set, METH_VARARGS, NULL},
+	 { "IndexBinaryFromFloat_index_get", _wrap_IndexBinaryFromFloat_index_get, METH_O, NULL},
+	 { "IndexBinaryFromFloat_own_fields_set", _wrap_IndexBinaryFromFloat_own_fields_set, METH_VARARGS, " Whether object owns the index pointer."},
+	 { "IndexBinaryFromFloat_own_fields_get", _wrap_IndexBinaryFromFloat_own_fields_get, METH_O, " Whether object owns the index pointer."},
+	 { "new_IndexBinaryFromFloat", _wrap_new_IndexBinaryFromFloat, METH_VARARGS, NULL},
+	 { "delete_IndexBinaryFromFloat", _wrap_delete_IndexBinaryFromFloat, METH_O, NULL},
+	 { "IndexBinaryFromFloat_add", _wrap_IndexBinaryFromFloat_add, METH_VARARGS, NULL},
+	 { "IndexBinaryFromFloat_reset", _wrap_IndexBinaryFromFloat_reset, METH_O, NULL},
+	 { "IndexBinaryFromFloat_search", _wrap_IndexBinaryFromFloat_search, METH_VARARGS, NULL},
+	 { "IndexBinaryFromFloat_train", _wrap_IndexBinaryFromFloat_train, METH_VARARGS, NULL},
+	 { "IndexBinaryFromFloat_swigregister", IndexBinaryFromFloat_swigregister, METH_O, NULL},
+	 { "IndexBinaryFromFloat_swiginit", IndexBinaryFromFloat_swiginit, METH_VARARGS, NULL},
+	 { "IndexBinaryHNSW_hnsw_set", _wrap_IndexBinaryHNSW_hnsw_set, METH_VARARGS, NULL},
+	 { "IndexBinaryHNSW_hnsw_get", _wrap_IndexBinaryHNSW_hnsw_get, METH_O, NULL},
+	 { "IndexBinaryHNSW_own_fields_set", _wrap_IndexBinaryHNSW_own_fields_set, METH_VARARGS, NULL},
+	 { "IndexBinaryHNSW_own_fields_get", _wrap_IndexBinaryHNSW_own_fields_get, METH_O, NULL},
+	 { "IndexBinaryHNSW_storage_set", _wrap_IndexBinaryHNSW_storage_set, METH_VARARGS, NULL},
+	 { "IndexBinaryHNSW_storage_get", _wrap_IndexBinaryHNSW_storage_get, METH_O, NULL},
+	 { "new_IndexBinaryHNSW", _wrap_new_IndexBinaryHNSW, METH_VARARGS, NULL},
+	 { "delete_IndexBinaryHNSW", _wrap_delete_IndexBinaryHNSW, METH_O, NULL},
+	 { "IndexBinaryHNSW_get_distance_computer", _wrap_IndexBinaryHNSW_get_distance_computer, METH_O, NULL},
+	 { "IndexBinaryHNSW_add", _wrap_IndexBinaryHNSW_add, METH_VARARGS, NULL},
+	 { "IndexBinaryHNSW_train", _wrap_IndexBinaryHNSW_train, METH_VARARGS, " Trains the storage if needed"},
+	 { "IndexBinaryHNSW_search", _wrap_IndexBinaryHNSW_search, METH_VARARGS, " entry point for search"},
+	 { "IndexBinaryHNSW_reconstruct", _wrap_IndexBinaryHNSW_reconstruct, METH_VARARGS, NULL},
+	 { "IndexBinaryHNSW_reset", _wrap_IndexBinaryHNSW_reset, METH_O, NULL},
+	 { "IndexBinaryHNSW_swigregister", IndexBinaryHNSW_swigregister, METH_O, NULL},
+	 { "IndexBinaryHNSW_swiginit", IndexBinaryHNSW_swiginit, METH_VARARGS, NULL},
+	 { "IndexBinaryHash_invlists_set", _wrap_IndexBinaryHash_invlists_set, METH_VARARGS, NULL},
+	 { "IndexBinaryHash_invlists_get", _wrap_IndexBinaryHash_invlists_get, METH_O, NULL},
+	 { "IndexBinaryHash_b_set", _wrap_IndexBinaryHash_b_set, METH_VARARGS, NULL},
+	 { "IndexBinaryHash_b_get", _wrap_IndexBinaryHash_b_get, METH_O, NULL},
+	 { "IndexBinaryHash_nflip_set", _wrap_IndexBinaryHash_nflip_set, METH_VARARGS, NULL},
+	 { "IndexBinaryHash_nflip_get", _wrap_IndexBinaryHash_nflip_get, METH_O, NULL},
+	 { "new_IndexBinaryHash", _wrap_new_IndexBinaryHash, METH_VARARGS, NULL},
+	 { "IndexBinaryHash_reset", _wrap_IndexBinaryHash_reset, METH_O, NULL},
+	 { "IndexBinaryHash_add", _wrap_IndexBinaryHash_add, METH_VARARGS, NULL},
+	 { "IndexBinaryHash_add_with_ids", _wrap_IndexBinaryHash_add_with_ids, METH_VARARGS, NULL},
+	 { "IndexBinaryHash_range_search", _wrap_IndexBinaryHash_range_search, METH_VARARGS, NULL},
+	 { "IndexBinaryHash_search", _wrap_IndexBinaryHash_search, METH_VARARGS, NULL},
+	 { "IndexBinaryHash_display", _wrap_IndexBinaryHash_display, METH_O, NULL},
+	 { "IndexBinaryHash_hashtable_size", _wrap_IndexBinaryHash_hashtable_size, METH_O, NULL},
+	 { "delete_IndexBinaryHash", _wrap_delete_IndexBinaryHash, METH_O, NULL},
+	 { "IndexBinaryHash_swigregister", IndexBinaryHash_swigregister, METH_O, NULL},
+	 { "IndexBinaryHash_swiginit", IndexBinaryHash_swiginit, METH_VARARGS, NULL},
+	 { "IndexBinaryHashStats_nq_set", _wrap_IndexBinaryHashStats_nq_set, METH_VARARGS, NULL},
+	 { "IndexBinaryHashStats_nq_get", _wrap_IndexBinaryHashStats_nq_get, METH_O, NULL},
+	 { "IndexBinaryHashStats_n0_set", _wrap_IndexBinaryHashStats_n0_set, METH_VARARGS, NULL},
+	 { "IndexBinaryHashStats_n0_get", _wrap_IndexBinaryHashStats_n0_get, METH_O, NULL},
+	 { "IndexBinaryHashStats_nlist_set", _wrap_IndexBinaryHashStats_nlist_set, METH_VARARGS, NULL},
+	 { "IndexBinaryHashStats_nlist_get", _wrap_IndexBinaryHashStats_nlist_get, METH_O, NULL},
+	 { "IndexBinaryHashStats_ndis_set", _wrap_IndexBinaryHashStats_ndis_set, METH_VARARGS, NULL},
+	 { "IndexBinaryHashStats_ndis_get", _wrap_IndexBinaryHashStats_ndis_get, METH_O, NULL},
+	 { "new_IndexBinaryHashStats", _wrap_new_IndexBinaryHashStats, METH_NOARGS, NULL},
+	 { "IndexBinaryHashStats_reset", _wrap_IndexBinaryHashStats_reset, METH_O, NULL},
+	 { "delete_IndexBinaryHashStats", _wrap_delete_IndexBinaryHashStats, METH_O, NULL},
+	 { "IndexBinaryHashStats_swigregister", IndexBinaryHashStats_swigregister, METH_O, NULL},
+	 { "IndexBinaryHashStats_swiginit", IndexBinaryHashStats_swiginit, METH_VARARGS, NULL},
+	 { "IndexBinaryMultiHash_storage_set", _wrap_IndexBinaryMultiHash_storage_set, METH_VARARGS, NULL},
+	 { "IndexBinaryMultiHash_storage_get", _wrap_IndexBinaryMultiHash_storage_get, METH_O, NULL},
+	 { "IndexBinaryMultiHash_own_fields_set", _wrap_IndexBinaryMultiHash_own_fields_set, METH_VARARGS, NULL},
+	 { "IndexBinaryMultiHash_own_fields_get", _wrap_IndexBinaryMultiHash_own_fields_get, METH_O, NULL},
+	 { "IndexBinaryMultiHash_maps_set", _wrap_IndexBinaryMultiHash_maps_set, METH_VARARGS, NULL},
+	 { "IndexBinaryMultiHash_maps_get", _wrap_IndexBinaryMultiHash_maps_get, METH_O, NULL},
+	 { "IndexBinaryMultiHash_nhash_set", _wrap_IndexBinaryMultiHash_nhash_set, METH_VARARGS, " nb of hash maps"},
+	 { "IndexBinaryMultiHash_nhash_get", _wrap_IndexBinaryMultiHash_nhash_get, METH_O, " nb of hash maps"},
+	 { "IndexBinaryMultiHash_b_set", _wrap_IndexBinaryMultiHash_b_set, METH_VARARGS, " nb bits per hash map"},
+	 { "IndexBinaryMultiHash_b_get", _wrap_IndexBinaryMultiHash_b_get, METH_O, " nb bits per hash map"},
+	 { "IndexBinaryMultiHash_nflip_set", _wrap_IndexBinaryMultiHash_nflip_set, METH_VARARGS, " nb bit flips to use at search time"},
+	 { "IndexBinaryMultiHash_nflip_get", _wrap_IndexBinaryMultiHash_nflip_get, METH_O, " nb bit flips to use at search time"},
+	 { "new_IndexBinaryMultiHash", _wrap_new_IndexBinaryMultiHash, METH_VARARGS, NULL},
+	 { "delete_IndexBinaryMultiHash", _wrap_delete_IndexBinaryMultiHash, METH_O, NULL},
+	 { "IndexBinaryMultiHash_reset", _wrap_IndexBinaryMultiHash_reset, METH_O, NULL},
+	 { "IndexBinaryMultiHash_add", _wrap_IndexBinaryMultiHash_add, METH_VARARGS, NULL},
+	 { "IndexBinaryMultiHash_range_search", _wrap_IndexBinaryMultiHash_range_search, METH_VARARGS, NULL},
+	 { "IndexBinaryMultiHash_search", _wrap_IndexBinaryMultiHash_search, METH_VARARGS, NULL},
+	 { "IndexBinaryMultiHash_hashtable_size", _wrap_IndexBinaryMultiHash_hashtable_size, METH_O, NULL},
+	 { "IndexBinaryMultiHash_swigregister", IndexBinaryMultiHash_swigregister, METH_O, NULL},
+	 { "IndexBinaryMultiHash_swiginit", IndexBinaryMultiHash_swiginit, METH_VARARGS, NULL},
+	 { "delete_ThreadedIndexBase", _wrap_delete_ThreadedIndexBase, METH_O, NULL},
+	 { "ThreadedIndexBase_addIndex", _wrap_ThreadedIndexBase_addIndex, METH_VARARGS, "\n"
+		"override an index that is managed by ourselves.\n"
+		"WARNING: once an index is added, it becomes unsafe to touch it from any\n"
+		"other thread than that on which is managing it, until we are shut\n"
+		"down. Use runOnIndex to perform work on it instead.\n"
+		""},
+	 { "ThreadedIndexBase_removeIndex", _wrap_ThreadedIndexBase_removeIndex, METH_VARARGS, "\n"
+		"Remove an index that is managed by ourselves.\n"
+		"This will flush all pending work on that index, and then shut\n"
+		"down its managing thread, and will remove the index.\n"
+		""},
+	 { "ThreadedIndexBase_runOnIndex", _wrap_ThreadedIndexBase_runOnIndex, METH_VARARGS, "\n"
+		"Run a function on all indices, in the thread that the index is\n"
+		"managed in.\n"
+		"Function arguments are (index in collection, index pointer)\n"
+		""},
+	 { "ThreadedIndexBase_reset", _wrap_ThreadedIndexBase_reset, METH_O, "\n"
+		"faiss::Index API\n"
+		"All indices receive the same call\n"
+		""},
+	 { "ThreadedIndexBase_count", _wrap_ThreadedIndexBase_count, METH_O, " Returns the number of sub-indices"},
+	 { "ThreadedIndexBase_at", _wrap_ThreadedIndexBase_at, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"Returns the i-th sub-index\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"Returns the i-th sub-index (const version)\n"
+		""},
+	 { "ThreadedIndexBase_own_fields_set", _wrap_ThreadedIndexBase_own_fields_set, METH_VARARGS, " Whether or not we are responsible for deleting our contained indices"},
+	 { "ThreadedIndexBase_own_fields_get", _wrap_ThreadedIndexBase_own_fields_get, METH_O, " Whether or not we are responsible for deleting our contained indices"},
+	 { "ThreadedIndexBase_swigregister", ThreadedIndexBase_swigregister, METH_O, NULL},
+	 { "delete_ThreadedIndexBaseBinary", _wrap_delete_ThreadedIndexBaseBinary, METH_O, NULL},
+	 { "ThreadedIndexBaseBinary_addIndex", _wrap_ThreadedIndexBaseBinary_addIndex, METH_VARARGS, "\n"
+		"override an index that is managed by ourselves.\n"
+		"WARNING: once an index is added, it becomes unsafe to touch it from any\n"
+		"other thread than that on which is managing it, until we are shut\n"
+		"down. Use runOnIndex to perform work on it instead.\n"
+		""},
+	 { "ThreadedIndexBaseBinary_removeIndex", _wrap_ThreadedIndexBaseBinary_removeIndex, METH_VARARGS, "\n"
+		"Remove an index that is managed by ourselves.\n"
+		"This will flush all pending work on that index, and then shut\n"
+		"down its managing thread, and will remove the index.\n"
+		""},
+	 { "ThreadedIndexBaseBinary_runOnIndex", _wrap_ThreadedIndexBaseBinary_runOnIndex, METH_VARARGS, "\n"
+		"Run a function on all indices, in the thread that the index is\n"
+		"managed in.\n"
+		"Function arguments are (index in collection, index pointer)\n"
+		""},
+	 { "ThreadedIndexBaseBinary_reset", _wrap_ThreadedIndexBaseBinary_reset, METH_O, "\n"
+		"faiss::Index API\n"
+		"All indices receive the same call\n"
+		""},
+	 { "ThreadedIndexBaseBinary_count", _wrap_ThreadedIndexBaseBinary_count, METH_O, " Returns the number of sub-indices"},
+	 { "ThreadedIndexBaseBinary_at", _wrap_ThreadedIndexBaseBinary_at, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"Returns the i-th sub-index\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"Returns the i-th sub-index (const version)\n"
+		""},
+	 { "ThreadedIndexBaseBinary_own_fields_set", _wrap_ThreadedIndexBaseBinary_own_fields_set, METH_VARARGS, " Whether or not we are responsible for deleting our contained indices"},
+	 { "ThreadedIndexBaseBinary_own_fields_get", _wrap_ThreadedIndexBaseBinary_own_fields_get, METH_O, " Whether or not we are responsible for deleting our contained indices"},
+	 { "ThreadedIndexBaseBinary_swigregister", ThreadedIndexBaseBinary_swigregister, METH_O, NULL},
+	 { "new_IndexShards", _wrap_new_IndexShards, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"\n"
+		"The dimension that all sub-indices must share will be the dimension of\n"
+		"the first sub-index added\n"
+		"\n"
+		":type threaded: boolean, optional\n"
+		":param threaded:     do we use one thread per sub_index or do\n"
+		"                        queries sequentially?\n"
+		":type successive_ids: boolean, optional\n"
+		":param successive_ids: should we shift the returned ids by\n"
+		"                        the size of each sub-index or return them\n"
+		"                        as they are?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"\n"
+		":type threaded: boolean, optional\n"
+		":param threaded:     do we use one thread per sub_index or do\n"
+		"                        queries sequentially?\n"
+		":type successive_ids: boolean, optional\n"
+		":param successive_ids: should we shift the returned ids by\n"
+		"                        the size of each sub-index or return them\n"
+		"                        as they are?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 3:*\n"
+		"\n"
+		":type threaded: boolean, optional\n"
+		":param threaded:     do we use one thread per sub_index or do\n"
+		"                        queries sequentially?\n"
+		":param successive_ids: should we shift the returned ids by\n"
+		"                        the size of each sub-index or return them\n"
+		"                        as they are?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 4:*\n"
+		"\n"
+		":param threaded:     do we use one thread per sub_index or do\n"
+		"                        queries sequentially?\n"
+		":param successive_ids: should we shift the returned ids by\n"
+		"                        the size of each sub-index or return them\n"
+		"                        as they are?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 5:*\n"
+		" int version due to the implicit bool conversion ambiguity of int as\n"
+		" dimension\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 6:*\n"
+		" int version due to the implicit bool conversion ambiguity of int as\n"
+		" dimension\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 7:*\n"
+		" int version due to the implicit bool conversion ambiguity of int as\n"
+		" dimension\n"
+		""},
+	 { "IndexShards_add_shard", _wrap_IndexShards_add_shard, METH_VARARGS, " Alias for addIndex()"},
+	 { "IndexShards_remove_shard", _wrap_IndexShards_remove_shard, METH_VARARGS, " Alias for removeIndex()"},
+	 { "IndexShards_add", _wrap_IndexShards_add, METH_VARARGS, " supported only for sub-indices that implement add_with_ids"},
+	 { "IndexShards_add_with_ids", _wrap_IndexShards_add_with_ids, METH_VARARGS, "\n"
+		"Cases (successive_ids, xids):\n"
+		"- true, non-NULL       ERROR: it makes no sense to pass in ids and\n"
+		"                       request them to be shifted\n"
+		"- true, NULL           OK, but should be called only once (calls add()\n"
+		"                       on sub-indexes).\n"
+		"- false, non-NULL      OK: will call add_with_ids with passed in xids\n"
+		"                       distributed evenly over shards\n"
+		"- false, NULL          OK: will call add_with_ids on each sub-index,\n"
+		"                       starting at ntotal\n"
+		""},
+	 { "IndexShards_search", _wrap_IndexShards_search, METH_VARARGS, NULL},
+	 { "IndexShards_train", _wrap_IndexShards_train, METH_VARARGS, NULL},
+	 { "IndexShards_successive_ids_set", _wrap_IndexShards_successive_ids_set, METH_VARARGS, NULL},
+	 { "IndexShards_successive_ids_get", _wrap_IndexShards_successive_ids_get, METH_O, NULL},
+	 { "IndexShards_syncWithSubIndexes", _wrap_IndexShards_syncWithSubIndexes, METH_O, "\n"
+		"Synchronize the top-level index (IndexShards) with data in the\n"
+		"sub-indices\n"
+		""},
+	 { "delete_IndexShards", _wrap_delete_IndexShards, METH_O, NULL},
+	 { "IndexShards_swigregister", IndexShards_swigregister, METH_O, NULL},
+	 { "IndexShards_swiginit", IndexShards_swiginit, METH_VARARGS, NULL},
+	 { "new_IndexBinaryShards", _wrap_new_IndexBinaryShards, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"\n"
+		"The dimension that all sub-indices must share will be the dimension of\n"
+		"the first sub-index added\n"
+		"\n"
+		":type threaded: boolean, optional\n"
+		":param threaded:     do we use one thread per sub_index or do\n"
+		"                        queries sequentially?\n"
+		":type successive_ids: boolean, optional\n"
+		":param successive_ids: should we shift the returned ids by\n"
+		"                        the size of each sub-index or return them\n"
+		"                        as they are?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"\n"
+		":type threaded: boolean, optional\n"
+		":param threaded:     do we use one thread per sub_index or do\n"
+		"                        queries sequentially?\n"
+		":type successive_ids: boolean, optional\n"
+		":param successive_ids: should we shift the returned ids by\n"
+		"                        the size of each sub-index or return them\n"
+		"                        as they are?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 3:*\n"
+		"\n"
+		":type threaded: boolean, optional\n"
+		":param threaded:     do we use one thread per sub_index or do\n"
+		"                        queries sequentially?\n"
+		":param successive_ids: should we shift the returned ids by\n"
+		"                        the size of each sub-index or return them\n"
+		"                        as they are?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 4:*\n"
+		"\n"
+		":param threaded:     do we use one thread per sub_index or do\n"
+		"                        queries sequentially?\n"
+		":param successive_ids: should we shift the returned ids by\n"
+		"                        the size of each sub-index or return them\n"
+		"                        as they are?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 5:*\n"
+		" int version due to the implicit bool conversion ambiguity of int as\n"
+		" dimension\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 6:*\n"
+		" int version due to the implicit bool conversion ambiguity of int as\n"
+		" dimension\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 7:*\n"
+		" int version due to the implicit bool conversion ambiguity of int as\n"
+		" dimension\n"
+		""},
+	 { "IndexBinaryShards_add_shard", _wrap_IndexBinaryShards_add_shard, METH_VARARGS, " Alias for addIndex()"},
+	 { "IndexBinaryShards_remove_shard", _wrap_IndexBinaryShards_remove_shard, METH_VARARGS, " Alias for removeIndex()"},
+	 { "IndexBinaryShards_add", _wrap_IndexBinaryShards_add, METH_VARARGS, " supported only for sub-indices that implement add_with_ids"},
+	 { "IndexBinaryShards_add_with_ids", _wrap_IndexBinaryShards_add_with_ids, METH_VARARGS, "\n"
+		"Cases (successive_ids, xids):\n"
+		"- true, non-NULL       ERROR: it makes no sense to pass in ids and\n"
+		"                       request them to be shifted\n"
+		"- true, NULL           OK, but should be called only once (calls add()\n"
+		"                       on sub-indexes).\n"
+		"- false, non-NULL      OK: will call add_with_ids with passed in xids\n"
+		"                       distributed evenly over shards\n"
+		"- false, NULL          OK: will call add_with_ids on each sub-index,\n"
+		"                       starting at ntotal\n"
+		""},
+	 { "IndexBinaryShards_search", _wrap_IndexBinaryShards_search, METH_VARARGS, NULL},
+	 { "IndexBinaryShards_train", _wrap_IndexBinaryShards_train, METH_VARARGS, NULL},
+	 { "IndexBinaryShards_successive_ids_set", _wrap_IndexBinaryShards_successive_ids_set, METH_VARARGS, NULL},
+	 { "IndexBinaryShards_successive_ids_get", _wrap_IndexBinaryShards_successive_ids_get, METH_O, NULL},
+	 { "IndexBinaryShards_syncWithSubIndexes", _wrap_IndexBinaryShards_syncWithSubIndexes, METH_O, "\n"
+		"Synchronize the top-level index (IndexShards) with data in the\n"
+		"sub-indices\n"
+		""},
+	 { "delete_IndexBinaryShards", _wrap_delete_IndexBinaryShards, METH_O, NULL},
+	 { "IndexBinaryShards_swigregister", IndexBinaryShards_swigregister, METH_O, NULL},
+	 { "IndexBinaryShards_swiginit", IndexBinaryShards_swiginit, METH_VARARGS, NULL},
+	 { "new_IndexReplicas", _wrap_new_IndexReplicas, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"The dimension that all sub-indices must share will be the dimension of\n"
+		"the first sub-index added\n"
+		":type threaded: boolean, optional\n"
+		":param threaded: do we use one thread per sub-index or do queries\n"
+		"    sequentially?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		":type d: int\n"
+		":param d: the dimension that all sub-indices must share\n"
+		":type threaded: boolean, optional\n"
+		":param threaded: do we use one thread per sub index or do queries\n"
+		"    sequentially?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 3:*\n"
+		":type d: int\n"
+		":param d: the dimension that all sub-indices must share\n"
+		":param threaded: do we use one thread per sub index or do queries\n"
+		"    sequentially?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 4:*\n"
+		"int version due to the implicit bool conversion ambiguity of int as\n"
+		"dimension\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 5:*\n"
+		"int version due to the implicit bool conversion ambiguity of int as\n"
+		"dimension\n"
+		""},
+	 { "IndexReplicas_add_replica", _wrap_IndexReplicas_add_replica, METH_VARARGS, " Alias for addIndex()"},
+	 { "IndexReplicas_remove_replica", _wrap_IndexReplicas_remove_replica, METH_VARARGS, " Alias for removeIndex()"},
+	 { "IndexReplicas_train", _wrap_IndexReplicas_train, METH_VARARGS, "\n"
+		"faiss::Index API\n"
+		"All indices receive the same call\n"
+		""},
+	 { "IndexReplicas_add", _wrap_IndexReplicas_add, METH_VARARGS, "\n"
+		"faiss::Index API\n"
+		"All indices receive the same call\n"
+		""},
+	 { "IndexReplicas_search", _wrap_IndexReplicas_search, METH_VARARGS, "\n"
+		"faiss::Index API\n"
+		"Query is partitioned into a slice for each sub-index\n"
+		"split by ceil(n / #indices) for our sub-indices\n"
+		""},
+	 { "IndexReplicas_reconstruct", _wrap_IndexReplicas_reconstruct, METH_VARARGS, " reconstructs from the first index"},
+	 { "IndexReplicas_syncWithSubIndexes", _wrap_IndexReplicas_syncWithSubIndexes, METH_O, "\n"
+		"Synchronize the top-level index (IndexShards) with data in the\n"
+		"sub-indices\n"
+		""},
+	 { "delete_IndexReplicas", _wrap_delete_IndexReplicas, METH_O, NULL},
+	 { "IndexReplicas_swigregister", IndexReplicas_swigregister, METH_O, NULL},
+	 { "IndexReplicas_swiginit", IndexReplicas_swiginit, METH_VARARGS, NULL},
+	 { "new_IndexBinaryReplicas", _wrap_new_IndexBinaryReplicas, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"The dimension that all sub-indices must share will be the dimension of\n"
+		"the first sub-index added\n"
+		":type threaded: boolean, optional\n"
+		":param threaded: do we use one thread per sub-index or do queries\n"
+		"    sequentially?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		":type d: int\n"
+		":param d: the dimension that all sub-indices must share\n"
+		":type threaded: boolean, optional\n"
+		":param threaded: do we use one thread per sub index or do queries\n"
+		"    sequentially?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 3:*\n"
+		":type d: int\n"
+		":param d: the dimension that all sub-indices must share\n"
+		":param threaded: do we use one thread per sub index or do queries\n"
+		"    sequentially?\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 4:*\n"
+		"int version due to the implicit bool conversion ambiguity of int as\n"
+		"dimension\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 5:*\n"
+		"int version due to the implicit bool conversion ambiguity of int as\n"
+		"dimension\n"
+		""},
+	 { "IndexBinaryReplicas_add_replica", _wrap_IndexBinaryReplicas_add_replica, METH_VARARGS, " Alias for addIndex()"},
+	 { "IndexBinaryReplicas_remove_replica", _wrap_IndexBinaryReplicas_remove_replica, METH_VARARGS, " Alias for removeIndex()"},
+	 { "IndexBinaryReplicas_train", _wrap_IndexBinaryReplicas_train, METH_VARARGS, "\n"
+		"faiss::Index API\n"
+		"All indices receive the same call\n"
+		""},
+	 { "IndexBinaryReplicas_add", _wrap_IndexBinaryReplicas_add, METH_VARARGS, "\n"
+		"faiss::Index API\n"
+		"All indices receive the same call\n"
+		""},
+	 { "IndexBinaryReplicas_search", _wrap_IndexBinaryReplicas_search, METH_VARARGS, "\n"
+		"faiss::Index API\n"
+		"Query is partitioned into a slice for each sub-index\n"
+		"split by ceil(n / #indices) for our sub-indices\n"
+		""},
+	 { "IndexBinaryReplicas_reconstruct", _wrap_IndexBinaryReplicas_reconstruct, METH_VARARGS, " reconstructs from the first index"},
+	 { "IndexBinaryReplicas_syncWithSubIndexes", _wrap_IndexBinaryReplicas_syncWithSubIndexes, METH_O, "\n"
+		"Synchronize the top-level index (IndexShards) with data in the\n"
+		"sub-indices\n"
+		""},
+	 { "delete_IndexBinaryReplicas", _wrap_delete_IndexBinaryReplicas, METH_O, NULL},
+	 { "IndexBinaryReplicas_swigregister", IndexBinaryReplicas_swigregister, METH_O, NULL},
+	 { "IndexBinaryReplicas_swiginit", IndexBinaryReplicas_swiginit, METH_VARARGS, NULL},
+	 { "IndexSplitVectors_own_fields_set", _wrap_IndexSplitVectors_own_fields_set, METH_VARARGS, NULL},
+	 { "IndexSplitVectors_own_fields_get", _wrap_IndexSplitVectors_own_fields_get, METH_O, NULL},
+	 { "IndexSplitVectors_threaded_set", _wrap_IndexSplitVectors_threaded_set, METH_VARARGS, NULL},
+	 { "IndexSplitVectors_threaded_get", _wrap_IndexSplitVectors_threaded_get, METH_O, NULL},
+	 { "IndexSplitVectors_sub_indexes_set", _wrap_IndexSplitVectors_sub_indexes_set, METH_VARARGS, NULL},
+	 { "IndexSplitVectors_sub_indexes_get", _wrap_IndexSplitVectors_sub_indexes_get, METH_O, NULL},
+	 { "IndexSplitVectors_sum_d_set", _wrap_IndexSplitVectors_sum_d_set, METH_VARARGS, NULL},
+	 { "IndexSplitVectors_sum_d_get", _wrap_IndexSplitVectors_sum_d_get, METH_O, NULL},
+	 { "new_IndexSplitVectors", _wrap_new_IndexSplitVectors, METH_VARARGS, " sum of dimensions seen so far"},
+	 { "IndexSplitVectors_add_sub_index", _wrap_IndexSplitVectors_add_sub_index, METH_VARARGS, NULL},
+	 { "IndexSplitVectors_sync_with_sub_indexes", _wrap_IndexSplitVectors_sync_with_sub_indexes, METH_O, NULL},
+	 { "IndexSplitVectors_add", _wrap_IndexSplitVectors_add, METH_VARARGS, NULL},
+	 { "IndexSplitVectors_search", _wrap_IndexSplitVectors_search, METH_VARARGS, NULL},
+	 { "IndexSplitVectors_train", _wrap_IndexSplitVectors_train, METH_VARARGS, NULL},
+	 { "IndexSplitVectors_reset", _wrap_IndexSplitVectors_reset, METH_O, NULL},
+	 { "delete_IndexSplitVectors", _wrap_delete_IndexSplitVectors, METH_O, NULL},
+	 { "IndexSplitVectors_swigregister", IndexSplitVectors_swigregister, METH_O, NULL},
+	 { "IndexSplitVectors_swiginit", IndexSplitVectors_swiginit, METH_VARARGS, NULL},
+	 { "IndexIDMap_index_set", _wrap_IndexIDMap_index_set, METH_VARARGS, NULL},
+	 { "IndexIDMap_index_get", _wrap_IndexIDMap_index_get, METH_O, NULL},
+	 { "IndexIDMap_own_fields_set", _wrap_IndexIDMap_own_fields_set, METH_VARARGS, "the sub-index"},
+	 { "IndexIDMap_own_fields_get", _wrap_IndexIDMap_own_fields_get, METH_O, "the sub-index"},
+	 { "IndexIDMap_id_map_set", _wrap_IndexIDMap_id_map_set, METH_VARARGS, "whether pointers are deleted in destructo"},
+	 { "IndexIDMap_id_map_get", _wrap_IndexIDMap_id_map_get, METH_O, "whether pointers are deleted in destructo"},
+	 { "IndexIDMap_add_with_ids", _wrap_IndexIDMap_add_with_ids, METH_VARARGS, "\n"
+		":type xids: int\n"
+		":param xids: if non-null, ids to store for the vectors (size n)\n"
+		""},
+	 { "IndexIDMap_add", _wrap_IndexIDMap_add, METH_VARARGS, " this will fail. Use add_with_ids"},
+	 { "IndexIDMap_search", _wrap_IndexIDMap_search, METH_VARARGS, NULL},
+	 { "IndexIDMap_train", _wrap_IndexIDMap_train, METH_VARARGS, NULL},
+	 { "IndexIDMap_reset", _wrap_IndexIDMap_reset, METH_O, NULL},
+	 { "IndexIDMap_remove_ids", _wrap_IndexIDMap_remove_ids, METH_VARARGS, " remove ids adapted to IndexFlat"},
+	 { "IndexIDMap_range_search", _wrap_IndexIDMap_range_search, METH_VARARGS, NULL},
+	 { "delete_IndexIDMap", _wrap_delete_IndexIDMap, METH_O, NULL},
+	 { "new_IndexIDMap", _wrap_new_IndexIDMap, METH_VARARGS, NULL},
+	 { "IndexIDMap_swigregister", IndexIDMap_swigregister, METH_O, NULL},
+	 { "IndexIDMap_swiginit", IndexIDMap_swiginit, METH_VARARGS, NULL},
+	 { "IndexBinaryIDMap_index_set", _wrap_IndexBinaryIDMap_index_set, METH_VARARGS, NULL},
+	 { "IndexBinaryIDMap_index_get", _wrap_IndexBinaryIDMap_index_get, METH_O, NULL},
+	 { "IndexBinaryIDMap_own_fields_set", _wrap_IndexBinaryIDMap_own_fields_set, METH_VARARGS, "the sub-index"},
+	 { "IndexBinaryIDMap_own_fields_get", _wrap_IndexBinaryIDMap_own_fields_get, METH_O, "the sub-index"},
+	 { "IndexBinaryIDMap_id_map_set", _wrap_IndexBinaryIDMap_id_map_set, METH_VARARGS, "whether pointers are deleted in destructo"},
+	 { "IndexBinaryIDMap_id_map_get", _wrap_IndexBinaryIDMap_id_map_get, METH_O, "whether pointers are deleted in destructo"},
+	 { "IndexBinaryIDMap_add_with_ids", _wrap_IndexBinaryIDMap_add_with_ids, METH_VARARGS, "\n"
+		":type xids: int\n"
+		":param xids: if non-null, ids to store for the vectors (size n)\n"
+		""},
+	 { "IndexBinaryIDMap_add", _wrap_IndexBinaryIDMap_add, METH_VARARGS, " this will fail. Use add_with_ids"},
+	 { "IndexBinaryIDMap_search", _wrap_IndexBinaryIDMap_search, METH_VARARGS, NULL},
+	 { "IndexBinaryIDMap_train", _wrap_IndexBinaryIDMap_train, METH_VARARGS, NULL},
+	 { "IndexBinaryIDMap_reset", _wrap_IndexBinaryIDMap_reset, METH_O, NULL},
+	 { "IndexBinaryIDMap_remove_ids", _wrap_IndexBinaryIDMap_remove_ids, METH_VARARGS, " remove ids adapted to IndexFlat"},
+	 { "IndexBinaryIDMap_range_search", _wrap_IndexBinaryIDMap_range_search, METH_VARARGS, NULL},
+	 { "delete_IndexBinaryIDMap", _wrap_delete_IndexBinaryIDMap, METH_O, NULL},
+	 { "new_IndexBinaryIDMap", _wrap_new_IndexBinaryIDMap, METH_VARARGS, NULL},
+	 { "IndexBinaryIDMap_swigregister", IndexBinaryIDMap_swigregister, METH_O, NULL},
+	 { "IndexBinaryIDMap_swiginit", IndexBinaryIDMap_swiginit, METH_VARARGS, NULL},
+	 { "IndexIDMap2_rev_map_set", _wrap_IndexIDMap2_rev_map_set, METH_VARARGS, NULL},
+	 { "IndexIDMap2_rev_map_get", _wrap_IndexIDMap2_rev_map_get, METH_O, NULL},
+	 { "IndexIDMap2_construct_rev_map", _wrap_IndexIDMap2_construct_rev_map, METH_O, " make the rev_map from scratch"},
+	 { "IndexIDMap2_add_with_ids", _wrap_IndexIDMap2_add_with_ids, METH_VARARGS, NULL},
+	 { "IndexIDMap2_remove_ids", _wrap_IndexIDMap2_remove_ids, METH_VARARGS, NULL},
+	 { "IndexIDMap2_reconstruct", _wrap_IndexIDMap2_reconstruct, METH_VARARGS, NULL},
+	 { "delete_IndexIDMap2", _wrap_delete_IndexIDMap2, METH_O, NULL},
+	 { "new_IndexIDMap2", _wrap_new_IndexIDMap2, METH_VARARGS, NULL},
+	 { "IndexIDMap2_swigregister", IndexIDMap2_swigregister, METH_O, NULL},
+	 { "IndexIDMap2_swiginit", IndexIDMap2_swiginit, METH_VARARGS, NULL},
+	 { "IndexBinaryIDMap2_rev_map_set", _wrap_IndexBinaryIDMap2_rev_map_set, METH_VARARGS, NULL},
+	 { "IndexBinaryIDMap2_rev_map_get", _wrap_IndexBinaryIDMap2_rev_map_get, METH_O, NULL},
+	 { "IndexBinaryIDMap2_construct_rev_map", _wrap_IndexBinaryIDMap2_construct_rev_map, METH_O, " make the rev_map from scratch"},
+	 { "IndexBinaryIDMap2_add_with_ids", _wrap_IndexBinaryIDMap2_add_with_ids, METH_VARARGS, NULL},
+	 { "IndexBinaryIDMap2_remove_ids", _wrap_IndexBinaryIDMap2_remove_ids, METH_VARARGS, NULL},
+	 { "IndexBinaryIDMap2_reconstruct", _wrap_IndexBinaryIDMap2_reconstruct, METH_VARARGS, NULL},
+	 { "delete_IndexBinaryIDMap2", _wrap_delete_IndexBinaryIDMap2, METH_O, NULL},
+	 { "new_IndexBinaryIDMap2", _wrap_new_IndexBinaryIDMap2, METH_VARARGS, NULL},
+	 { "IndexBinaryIDMap2_swigregister", IndexBinaryIDMap2_swigregister, METH_O, NULL},
+	 { "IndexBinaryIDMap2_swiginit", IndexBinaryIDMap2_swiginit, METH_VARARGS, NULL},
+	 { "RangeSearchResult_nq_set", _wrap_RangeSearchResult_nq_set, METH_VARARGS, " nb of queries"},
+	 { "RangeSearchResult_nq_get", _wrap_RangeSearchResult_nq_get, METH_O, " nb of queries"},
+	 { "RangeSearchResult_lims_set", _wrap_RangeSearchResult_lims_set, METH_VARARGS, " size (nq + 1)"},
+	 { "RangeSearchResult_lims_get", _wrap_RangeSearchResult_lims_get, METH_O, " size (nq + 1)"},
+	 { "RangeSearchResult_labels_set", _wrap_RangeSearchResult_labels_set, METH_VARARGS, " result for query i is labels[lims[i]:lims[i+1]]"},
+	 { "RangeSearchResult_labels_get", _wrap_RangeSearchResult_labels_get, METH_O, " result for query i is labels[lims[i]:lims[i+1]]"},
+	 { "RangeSearchResult_distances_set", _wrap_RangeSearchResult_distances_set, METH_VARARGS, " corresponding distances (not sorted)"},
+	 { "RangeSearchResult_distances_get", _wrap_RangeSearchResult_distances_get, METH_O, " corresponding distances (not sorted)"},
+	 { "RangeSearchResult_buffer_size_set", _wrap_RangeSearchResult_buffer_size_set, METH_VARARGS, " size of the result buffers used"},
+	 { "RangeSearchResult_buffer_size_get", _wrap_RangeSearchResult_buffer_size_get, METH_O, " size of the result buffers used"},
+	 { "new_RangeSearchResult", _wrap_new_RangeSearchResult, METH_VARARGS, " lims must be allocated on input to range_search."},
+	 { "RangeSearchResult_do_allocation", _wrap_RangeSearchResult_do_allocation, METH_O, "\n"
+		"called when lims contains the nb of elements result entries\n"
+		"for each query\n"
+		""},
+	 { "delete_RangeSearchResult", _wrap_delete_RangeSearchResult, METH_O, NULL},
+	 { "RangeSearchResult_swigregister", RangeSearchResult_swigregister, METH_O, NULL},
+	 { "RangeSearchResult_swiginit", RangeSearchResult_swiginit, METH_VARARGS, NULL},
+	 { "IDSelector_is_member", _wrap_IDSelector_is_member, METH_VARARGS, NULL},
+	 { "delete_IDSelector", _wrap_delete_IDSelector, METH_O, NULL},
+	 { "IDSelector_swigregister", IDSelector_swigregister, METH_O, NULL},
+	 { "IDSelectorRange_imin_set", _wrap_IDSelectorRange_imin_set, METH_VARARGS, NULL},
+	 { "IDSelectorRange_imin_get", _wrap_IDSelectorRange_imin_get, METH_O, NULL},
+	 { "IDSelectorRange_imax_set", _wrap_IDSelectorRange_imax_set, METH_VARARGS, NULL},
+	 { "IDSelectorRange_imax_get", _wrap_IDSelectorRange_imax_get, METH_O, NULL},
+	 { "new_IDSelectorRange", _wrap_new_IDSelectorRange, METH_VARARGS, NULL},
+	 { "IDSelectorRange_is_member", _wrap_IDSelectorRange_is_member, METH_VARARGS, NULL},
+	 { "delete_IDSelectorRange", _wrap_delete_IDSelectorRange, METH_O, NULL},
+	 { "IDSelectorRange_swigregister", IDSelectorRange_swigregister, METH_O, NULL},
+	 { "IDSelectorRange_swiginit", IDSelectorRange_swiginit, METH_VARARGS, NULL},
+	 { "IDSelectorArray_n_set", _wrap_IDSelectorArray_n_set, METH_VARARGS, NULL},
+	 { "IDSelectorArray_n_get", _wrap_IDSelectorArray_n_get, METH_O, NULL},
+	 { "IDSelectorArray_ids_set", _wrap_IDSelectorArray_ids_set, METH_VARARGS, NULL},
+	 { "IDSelectorArray_ids_get", _wrap_IDSelectorArray_ids_get, METH_O, NULL},
+	 { "new_IDSelectorArray", _wrap_new_IDSelectorArray, METH_VARARGS, NULL},
+	 { "IDSelectorArray_is_member", _wrap_IDSelectorArray_is_member, METH_VARARGS, NULL},
+	 { "delete_IDSelectorArray", _wrap_delete_IDSelectorArray, METH_O, NULL},
+	 { "IDSelectorArray_swigregister", IDSelectorArray_swigregister, METH_O, NULL},
+	 { "IDSelectorArray_swiginit", IDSelectorArray_swiginit, METH_VARARGS, NULL},
+	 { "IDSelectorBatch_nbits_set", _wrap_IDSelectorBatch_nbits_set, METH_VARARGS, NULL},
+	 { "IDSelectorBatch_nbits_get", _wrap_IDSelectorBatch_nbits_get, METH_O, NULL},
+	 { "IDSelectorBatch_mask_set", _wrap_IDSelectorBatch_mask_set, METH_VARARGS, NULL},
+	 { "IDSelectorBatch_mask_get", _wrap_IDSelectorBatch_mask_get, METH_O, NULL},
+	 { "new_IDSelectorBatch", _wrap_new_IDSelectorBatch, METH_VARARGS, NULL},
+	 { "IDSelectorBatch_is_member", _wrap_IDSelectorBatch_is_member, METH_VARARGS, NULL},
+	 { "delete_IDSelectorBatch", _wrap_delete_IDSelectorBatch, METH_O, NULL},
+	 { "IDSelectorBatch_swigregister", IDSelectorBatch_swigregister, METH_O, NULL},
+	 { "IDSelectorBatch_swiginit", IDSelectorBatch_swiginit, METH_VARARGS, NULL},
+	 { "BufferList_buffer_size_set", _wrap_BufferList_buffer_size_set, METH_VARARGS, NULL},
+	 { "BufferList_buffer_size_get", _wrap_BufferList_buffer_size_get, METH_O, NULL},
+	 { "BufferList_buffers_set", _wrap_BufferList_buffers_set, METH_VARARGS, NULL},
+	 { "BufferList_buffers_get", _wrap_BufferList_buffers_get, METH_O, NULL},
+	 { "BufferList_wp_set", _wrap_BufferList_wp_set, METH_VARARGS, " write pointer in the last buffer."},
+	 { "BufferList_wp_get", _wrap_BufferList_wp_get, METH_O, " write pointer in the last buffer."},
+	 { "new_BufferList", _wrap_new_BufferList, METH_O, NULL},
+	 { "delete_BufferList", _wrap_delete_BufferList, METH_O, NULL},
+	 { "BufferList_append_buffer", _wrap_BufferList_append_buffer, METH_O, " create a new buffer"},
+	 { "BufferList_add", _wrap_BufferList_add, METH_VARARGS, " add one result, possibly appending a new buffer if needed"},
+	 { "BufferList_copy_range", _wrap_BufferList_copy_range, METH_VARARGS, "\n"
+		"copy elemnts ofs:ofs+n-1 seen as linear data in the buffers to\n"
+		"tables dest_ids, dest_dis\n"
+		""},
+	 { "BufferList_swigregister", BufferList_swigregister, METH_O, NULL},
+	 { "BufferList_swiginit", BufferList_swiginit, METH_VARARGS, NULL},
+	 { "RangeQueryResult_qno_set", _wrap_RangeQueryResult_qno_set, METH_VARARGS, NULL},
+	 { "RangeQueryResult_qno_get", _wrap_RangeQueryResult_qno_get, METH_O, NULL},
+	 { "RangeQueryResult_nres_set", _wrap_RangeQueryResult_nres_set, METH_VARARGS, NULL},
+	 { "RangeQueryResult_nres_get", _wrap_RangeQueryResult_nres_get, METH_O, NULL},
+	 { "RangeQueryResult_pres_set", _wrap_RangeQueryResult_pres_set, METH_VARARGS, NULL},
+	 { "RangeQueryResult_pres_get", _wrap_RangeQueryResult_pres_get, METH_O, NULL},
+	 { "RangeQueryResult_add", _wrap_RangeQueryResult_add, METH_VARARGS, " called by search function to report a new result"},
+	 { "new_RangeQueryResult", _wrap_new_RangeQueryResult, METH_NOARGS, NULL},
+	 { "delete_RangeQueryResult", _wrap_delete_RangeQueryResult, METH_O, NULL},
+	 { "RangeQueryResult_swigregister", RangeQueryResult_swigregister, METH_O, NULL},
+	 { "RangeQueryResult_swiginit", RangeQueryResult_swiginit, METH_VARARGS, NULL},
+	 { "RangeSearchPartialResult_res_set", _wrap_RangeSearchPartialResult_res_set, METH_VARARGS, NULL},
+	 { "RangeSearchPartialResult_res_get", _wrap_RangeSearchPartialResult_res_get, METH_O, NULL},
+	 { "new_RangeSearchPartialResult", _wrap_new_RangeSearchPartialResult, METH_O, " eventually the result will be stored in res_in"},
+	 { "RangeSearchPartialResult_queries_set", _wrap_RangeSearchPartialResult_queries_set, METH_VARARGS, " query ids + nb of results per query."},
+	 { "RangeSearchPartialResult_queries_get", _wrap_RangeSearchPartialResult_queries_get, METH_O, " query ids + nb of results per query."},
+	 { "RangeSearchPartialResult_new_result", _wrap_RangeSearchPartialResult_new_result, METH_VARARGS, " begin a new result"},
+	 { "RangeSearchPartialResult_finalize", _wrap_RangeSearchPartialResult_finalize, METH_O, NULL},
+	 { "RangeSearchPartialResult_set_lims", _wrap_RangeSearchPartialResult_set_lims, METH_O, " called by range_search before do_allocation"},
+	 { "RangeSearchPartialResult_copy_result", _wrap_RangeSearchPartialResult_copy_result, METH_VARARGS, " called by range_search after do_allocation"},
+	 { "RangeSearchPartialResult_merge", _wrap_RangeSearchPartialResult_merge, METH_VARARGS, "\n"
+		"merge a set of PartialResult's into one RangeSearchResult\n"
+		"on ouptut the partialresults are empty!\n"
+		""},
+	 { "delete_RangeSearchPartialResult", _wrap_delete_RangeSearchPartialResult, METH_O, NULL},
+	 { "RangeSearchPartialResult_swigregister", RangeSearchPartialResult_swigregister, METH_O, NULL},
+	 { "RangeSearchPartialResult_swiginit", RangeSearchPartialResult_swiginit, METH_VARARGS, NULL},
+	 { "DistanceComputer_set_query", _wrap_DistanceComputer_set_query, METH_VARARGS, "\n"
+		"called before computing distances. Pointer x should remain valid\n"
+		"while operator () is called\n"
+		""},
+	 { "DistanceComputer___call__", _wrap_DistanceComputer___call__, METH_VARARGS, " compute distance of vector i to current query"},
+	 { "DistanceComputer_symmetric_dis", _wrap_DistanceComputer_symmetric_dis, METH_VARARGS, " compute distance between two stored vectors"},
+	 { "delete_DistanceComputer", _wrap_delete_DistanceComputer, METH_O, NULL},
+	 { "DistanceComputer_swigregister", DistanceComputer_swigregister, METH_O, NULL},
+	 { "InterruptCallback_want_interrupt", _wrap_InterruptCallback_want_interrupt, METH_O, NULL},
+	 { "delete_InterruptCallback", _wrap_delete_InterruptCallback, METH_O, NULL},
+	 { "InterruptCallback_clear_instance", _wrap_InterruptCallback_clear_instance, METH_NOARGS, NULL},
+	 { "InterruptCallback_check", _wrap_InterruptCallback_check, METH_NOARGS, "\n"
+		" check if:\n"
+		"- an interrupt callback is set\n"
+		"- the callback returns true\n"
+		"if this is the case, then throw an exception. Should not be called\n"
+		"from multiple threads.\n"
+		""},
+	 { "InterruptCallback_is_interrupted", _wrap_InterruptCallback_is_interrupted, METH_NOARGS, "\n"
+		"same as check() but return true if is interrupted instead of\n"
+		"throwing. Can be called from multiple threads.\n"
+		""},
+	 { "InterruptCallback_get_period_hint", _wrap_InterruptCallback_get_period_hint, METH_O, "\n"
+		" assuming each iteration takes a certain number of flops, what\n"
+		"is a reasonable interval to check for interrupts?\n"
+		""},
+	 { "InterruptCallback_swigregister", InterruptCallback_swigregister, METH_O, NULL},
+	 { "VisitedTable_visited_set", _wrap_VisitedTable_visited_set, METH_VARARGS, NULL},
+	 { "VisitedTable_visited_get", _wrap_VisitedTable_visited_get, METH_O, NULL},
+	 { "VisitedTable_visno_set", _wrap_VisitedTable_visno_set, METH_VARARGS, NULL},
+	 { "VisitedTable_visno_get", _wrap_VisitedTable_visno_get, METH_O, NULL},
+	 { "new_VisitedTable", _wrap_new_VisitedTable, METH_O, NULL},
+	 { "VisitedTable_set", _wrap_VisitedTable_set, METH_VARARGS, " set flag #no to true"},
+	 { "VisitedTable_get", _wrap_VisitedTable_get, METH_VARARGS, " get flag #no"},
+	 { "VisitedTable_advance", _wrap_VisitedTable_advance, METH_O, " reset all flags to false"},
+	 { "delete_VisitedTable", _wrap_delete_VisitedTable, METH_O, NULL},
+	 { "VisitedTable_swigregister", VisitedTable_swigregister, METH_O, NULL},
+	 { "VisitedTable_swiginit", VisitedTable_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuClonerOptions", _wrap_new_GpuClonerOptions, METH_NOARGS, NULL},
+	 { "GpuClonerOptions_indicesOptions_set", _wrap_GpuClonerOptions_indicesOptions_set, METH_VARARGS, "\n"
+		"how should indices be stored on index types that support indices\n"
+		"(anything but GpuIndexFlat*)?\n"
+		""},
+	 { "GpuClonerOptions_indicesOptions_get", _wrap_GpuClonerOptions_indicesOptions_get, METH_O, "\n"
+		"how should indices be stored on index types that support indices\n"
+		"(anything but GpuIndexFlat*)?\n"
+		""},
+	 { "GpuClonerOptions_useFloat16CoarseQuantizer_set", _wrap_GpuClonerOptions_useFloat16CoarseQuantizer_set, METH_VARARGS, " is the coarse quantizer in float16?"},
+	 { "GpuClonerOptions_useFloat16CoarseQuantizer_get", _wrap_GpuClonerOptions_useFloat16CoarseQuantizer_get, METH_O, " is the coarse quantizer in float16?"},
+	 { "GpuClonerOptions_useFloat16_set", _wrap_GpuClonerOptions_useFloat16_set, METH_VARARGS, "\n"
+		"for GpuIndexIVFFlat, is storage in float16?\n"
+		"for GpuIndexIVFPQ, are intermediate calculations in float16?\n"
+		""},
+	 { "GpuClonerOptions_useFloat16_get", _wrap_GpuClonerOptions_useFloat16_get, METH_O, "\n"
+		"for GpuIndexIVFFlat, is storage in float16?\n"
+		"for GpuIndexIVFPQ, are intermediate calculations in float16?\n"
+		""},
+	 { "GpuClonerOptions_usePrecomputed_set", _wrap_GpuClonerOptions_usePrecomputed_set, METH_VARARGS, " use precomputed tables?"},
+	 { "GpuClonerOptions_usePrecomputed_get", _wrap_GpuClonerOptions_usePrecomputed_get, METH_O, " use precomputed tables?"},
+	 { "GpuClonerOptions_reserveVecs_set", _wrap_GpuClonerOptions_reserveVecs_set, METH_VARARGS, " reserve vectors in the invfiles?"},
+	 { "GpuClonerOptions_reserveVecs_get", _wrap_GpuClonerOptions_reserveVecs_get, METH_O, " reserve vectors in the invfiles?"},
+	 { "GpuClonerOptions_storeTransposed_set", _wrap_GpuClonerOptions_storeTransposed_set, METH_VARARGS, " For GpuIndexFlat, store data in transposed layout?"},
+	 { "GpuClonerOptions_storeTransposed_get", _wrap_GpuClonerOptions_storeTransposed_get, METH_O, " For GpuIndexFlat, store data in transposed layout?"},
+	 { "GpuClonerOptions_verbose_set", _wrap_GpuClonerOptions_verbose_set, METH_VARARGS, " Set verbose options on the index"},
+	 { "GpuClonerOptions_verbose_get", _wrap_GpuClonerOptions_verbose_get, METH_O, " Set verbose options on the index"},
+	 { "delete_GpuClonerOptions", _wrap_delete_GpuClonerOptions, METH_O, NULL},
+	 { "GpuClonerOptions_swigregister", GpuClonerOptions_swigregister, METH_O, NULL},
+	 { "GpuClonerOptions_swiginit", GpuClonerOptions_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuMultipleClonerOptions", _wrap_new_GpuMultipleClonerOptions, METH_NOARGS, NULL},
+	 { "GpuMultipleClonerOptions_shard_set", _wrap_GpuMultipleClonerOptions_shard_set, METH_VARARGS, "\n"
+		"Whether to shard the index across GPUs, versus replication\n"
+		"across GPUs\n"
+		""},
+	 { "GpuMultipleClonerOptions_shard_get", _wrap_GpuMultipleClonerOptions_shard_get, METH_O, "\n"
+		"Whether to shard the index across GPUs, versus replication\n"
+		"across GPUs\n"
+		""},
+	 { "GpuMultipleClonerOptions_shard_type_set", _wrap_GpuMultipleClonerOptions_shard_type_set, METH_VARARGS, " IndexIVF::copy_subset_to subset type"},
+	 { "GpuMultipleClonerOptions_shard_type_get", _wrap_GpuMultipleClonerOptions_shard_type_get, METH_O, " IndexIVF::copy_subset_to subset type"},
+	 { "delete_GpuMultipleClonerOptions", _wrap_delete_GpuMultipleClonerOptions, METH_O, NULL},
+	 { "GpuMultipleClonerOptions_swigregister", GpuMultipleClonerOptions_swigregister, METH_O, NULL},
+	 { "GpuMultipleClonerOptions_swiginit", GpuMultipleClonerOptions_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuIndexConfig", _wrap_new_GpuIndexConfig, METH_NOARGS, NULL},
+	 { "GpuIndexConfig_device_set", _wrap_GpuIndexConfig_device_set, METH_VARARGS, " GPU device on which the index is resident"},
+	 { "GpuIndexConfig_device_get", _wrap_GpuIndexConfig_device_get, METH_O, " GPU device on which the index is resident"},
+	 { "GpuIndexConfig_memorySpace_set", _wrap_GpuIndexConfig_memorySpace_set, METH_VARARGS, "\n"
+		"What memory space to use for primary storage.\n"
+		"On Pascal and above (CC 6+) architectures, allows GPUs to use\n"
+		"more memory than is available on the GPU.\n"
+		""},
+	 { "GpuIndexConfig_memorySpace_get", _wrap_GpuIndexConfig_memorySpace_get, METH_O, "\n"
+		"What memory space to use for primary storage.\n"
+		"On Pascal and above (CC 6+) architectures, allows GPUs to use\n"
+		"more memory than is available on the GPU.\n"
+		""},
+	 { "delete_GpuIndexConfig", _wrap_delete_GpuIndexConfig, METH_O, NULL},
+	 { "GpuIndexConfig_swigregister", GpuIndexConfig_swigregister, METH_O, NULL},
+	 { "GpuIndexConfig_swiginit", GpuIndexConfig_swiginit, METH_VARARGS, NULL},
+	 { "GpuIndex_getDevice", _wrap_GpuIndex_getDevice, METH_O, " Returns the device that this index is resident on"},
+	 { "GpuIndex_getResources", _wrap_GpuIndex_getResources, METH_O, "\n"
+		"Returns a reference to our GpuResources object that manages memory,\n"
+		"stream and handle resources on the GPU\n"
+		""},
+	 { "GpuIndex_setMinPagingSize", _wrap_GpuIndex_setMinPagingSize, METH_VARARGS, "\n"
+		"Set the minimum data size for searches (in MiB) for which we use\n"
+		"CPU -> GPU paging\n"
+		""},
+	 { "GpuIndex_getMinPagingSize", _wrap_GpuIndex_getMinPagingSize, METH_O, " Returns the current minimum data size for paged searches"},
+	 { "GpuIndex_add", _wrap_GpuIndex_add, METH_VARARGS, "\n"
+		"`x` can be resident on the CPU or any GPU; copies are performed\n"
+		"as needed\n"
+		"Handles paged adds if the add set is too large; calls addInternal_\n"
+		""},
+	 { "GpuIndex_add_with_ids", _wrap_GpuIndex_add_with_ids, METH_VARARGS, "\n"
+		"`x` and `ids` can be resident on the CPU or any GPU; copies are\n"
+		"performed as needed\n"
+		"Handles paged adds if the add set is too large; calls addInternal_\n"
+		""},
+	 { "GpuIndex_assign", _wrap_GpuIndex_assign, METH_VARARGS, "\n"
+		"`x` and `labels` can be resident on the CPU or any GPU; copies are\n"
+		"performed as needed\n"
+		""},
+	 { "GpuIndex_search", _wrap_GpuIndex_search, METH_VARARGS, "\n"
+		"`x`, `distances` and `labels` can be resident on the CPU or any\n"
+		"GPU; copies are performed as needed\n"
+		""},
+	 { "GpuIndex_compute_residual", _wrap_GpuIndex_compute_residual, METH_VARARGS, "\n"
+		"Overridden to force GPU indices to provide their own GPU-friendly\n"
+		"implementation\n"
+		""},
+	 { "GpuIndex_compute_residual_n", _wrap_GpuIndex_compute_residual_n, METH_VARARGS, "\n"
+		"Overridden to force GPU indices to provide their own GPU-friendly\n"
+		"implementation\n"
+		""},
+	 { "delete_GpuIndex", _wrap_delete_GpuIndex, METH_O, NULL},
+	 { "GpuIndex_swigregister", GpuIndex_swigregister, METH_O, NULL},
+	 { "new_GpuIndexFlatConfig", _wrap_new_GpuIndexFlatConfig, METH_NOARGS, NULL},
+	 { "GpuIndexFlatConfig_useFloat16_set", _wrap_GpuIndexFlatConfig_useFloat16_set, METH_VARARGS, " Whether or not data is stored as float16"},
+	 { "GpuIndexFlatConfig_useFloat16_get", _wrap_GpuIndexFlatConfig_useFloat16_get, METH_O, " Whether or not data is stored as float16"},
+	 { "GpuIndexFlatConfig_storeTransposed_set", _wrap_GpuIndexFlatConfig_storeTransposed_set, METH_VARARGS, "\n"
+		"Whether or not data is stored (transparently) in a transposed\n"
+		"layout, enabling use of the NN GEMM call, which is ~10% faster.\n"
+		"This will improve the speed of the flat index, but will\n"
+		"substantially slow down any add() calls made, as all data must\n"
+		"be transposed, and will increase storage requirements (we store\n"
+		"data in both transposed and non-transposed layouts).\n"
+		""},
+	 { "GpuIndexFlatConfig_storeTransposed_get", _wrap_GpuIndexFlatConfig_storeTransposed_get, METH_O, "\n"
+		"Whether or not data is stored (transparently) in a transposed\n"
+		"layout, enabling use of the NN GEMM call, which is ~10% faster.\n"
+		"This will improve the speed of the flat index, but will\n"
+		"substantially slow down any add() calls made, as all data must\n"
+		"be transposed, and will increase storage requirements (we store\n"
+		"data in both transposed and non-transposed layouts).\n"
+		""},
+	 { "delete_GpuIndexFlatConfig", _wrap_delete_GpuIndexFlatConfig, METH_O, NULL},
+	 { "GpuIndexFlatConfig_swigregister", GpuIndexFlatConfig_swigregister, METH_O, NULL},
+	 { "GpuIndexFlatConfig_swiginit", GpuIndexFlatConfig_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuIndexFlat", _wrap_new_GpuIndexFlat, METH_VARARGS, NULL},
+	 { "delete_GpuIndexFlat", _wrap_delete_GpuIndexFlat, METH_O, NULL},
+	 { "GpuIndexFlat_copyFrom", _wrap_GpuIndexFlat_copyFrom, METH_VARARGS, "\n"
+		"Initialize ourselves from the given CPU index; will overwrite\n"
+		"all data in ourselves\n"
+		""},
+	 { "GpuIndexFlat_copyTo", _wrap_GpuIndexFlat_copyTo, METH_VARARGS, "\n"
+		"Copy ourselves to the given CPU index; will overwrite all data\n"
+		"in the index instance\n"
+		""},
+	 { "GpuIndexFlat_getNumVecs", _wrap_GpuIndexFlat_getNumVecs, METH_O, " Returns the number of vectors we contain"},
+	 { "GpuIndexFlat_reset", _wrap_GpuIndexFlat_reset, METH_O, " Clears all vectors from this index"},
+	 { "GpuIndexFlat_train", _wrap_GpuIndexFlat_train, METH_VARARGS, " This index is not trained, so this does nothing"},
+	 { "GpuIndexFlat_add", _wrap_GpuIndexFlat_add, METH_VARARGS, " Overrides to avoid excessive copies"},
+	 { "GpuIndexFlat_reconstruct", _wrap_GpuIndexFlat_reconstruct, METH_VARARGS, "\n"
+		"Reconstruction methods; prefer the batch reconstruct as it will\n"
+		"be more efficient\n"
+		""},
+	 { "GpuIndexFlat_reconstruct_n", _wrap_GpuIndexFlat_reconstruct_n, METH_VARARGS, " Batch reconstruction method"},
+	 { "GpuIndexFlat_compute_residual", _wrap_GpuIndexFlat_compute_residual, METH_VARARGS, " Compute residual"},
+	 { "GpuIndexFlat_compute_residual_n", _wrap_GpuIndexFlat_compute_residual_n, METH_VARARGS, " Compute residual (batch mode)"},
+	 { "GpuIndexFlat_getGpuData", _wrap_GpuIndexFlat_getGpuData, METH_O, " For internal access"},
+	 { "GpuIndexFlat_swigregister", GpuIndexFlat_swigregister, METH_O, NULL},
+	 { "GpuIndexFlat_swiginit", GpuIndexFlat_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuIndexFlatL2", _wrap_new_GpuIndexFlatL2, METH_VARARGS, NULL},
+	 { "GpuIndexFlatL2_copyFrom", _wrap_GpuIndexFlatL2_copyFrom, METH_VARARGS, "\n"
+		"Initialize ourselves from the given CPU index; will overwrite\n"
+		"all data in ourselves\n"
+		""},
+	 { "GpuIndexFlatL2_copyTo", _wrap_GpuIndexFlatL2_copyTo, METH_VARARGS, "\n"
+		"Copy ourselves to the given CPU index; will overwrite all data\n"
+		"in the index instance\n"
+		""},
+	 { "delete_GpuIndexFlatL2", _wrap_delete_GpuIndexFlatL2, METH_O, NULL},
+	 { "GpuIndexFlatL2_swigregister", GpuIndexFlatL2_swigregister, METH_O, NULL},
+	 { "GpuIndexFlatL2_swiginit", GpuIndexFlatL2_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuIndexFlatIP", _wrap_new_GpuIndexFlatIP, METH_VARARGS, NULL},
+	 { "GpuIndexFlatIP_copyFrom", _wrap_GpuIndexFlatIP_copyFrom, METH_VARARGS, "\n"
+		"Initialize ourselves from the given CPU index; will overwrite\n"
+		"all data in ourselves\n"
+		""},
+	 { "GpuIndexFlatIP_copyTo", _wrap_GpuIndexFlatIP_copyTo, METH_VARARGS, "\n"
+		"Copy ourselves to the given CPU index; will overwrite all data\n"
+		"in the index instance\n"
+		""},
+	 { "delete_GpuIndexFlatIP", _wrap_delete_GpuIndexFlatIP, METH_O, NULL},
+	 { "GpuIndexFlatIP_swigregister", GpuIndexFlatIP_swigregister, METH_O, NULL},
+	 { "GpuIndexFlatIP_swiginit", GpuIndexFlatIP_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuIndexIVFConfig", _wrap_new_GpuIndexIVFConfig, METH_NOARGS, NULL},
+	 { "GpuIndexIVFConfig_indicesOptions_set", _wrap_GpuIndexIVFConfig_indicesOptions_set, METH_VARARGS, " Index storage options for the GPU"},
+	 { "GpuIndexIVFConfig_indicesOptions_get", _wrap_GpuIndexIVFConfig_indicesOptions_get, METH_O, " Index storage options for the GPU"},
+	 { "GpuIndexIVFConfig_flatConfig_set", _wrap_GpuIndexIVFConfig_flatConfig_set, METH_VARARGS, " Configuration for the coarse quantizer object"},
+	 { "GpuIndexIVFConfig_flatConfig_get", _wrap_GpuIndexIVFConfig_flatConfig_get, METH_O, " Configuration for the coarse quantizer object"},
+	 { "delete_GpuIndexIVFConfig", _wrap_delete_GpuIndexIVFConfig, METH_O, NULL},
+	 { "GpuIndexIVFConfig_swigregister", GpuIndexIVFConfig_swigregister, METH_O, NULL},
+	 { "GpuIndexIVFConfig_swiginit", GpuIndexIVFConfig_swiginit, METH_VARARGS, NULL},
+	 { "delete_GpuIndexIVF", _wrap_delete_GpuIndexIVF, METH_O, NULL},
+	 { "GpuIndexIVF_copyFrom", _wrap_GpuIndexIVF_copyFrom, METH_VARARGS, " Copy what we need from the CPU equivalent"},
+	 { "GpuIndexIVF_copyTo", _wrap_GpuIndexIVF_copyTo, METH_VARARGS, " Copy what we have to the CPU equivalent"},
+	 { "GpuIndexIVF_getNumLists", _wrap_GpuIndexIVF_getNumLists, METH_O, " Returns the number of inverted lists we're managing"},
+	 { "GpuIndexIVF_getListLength", _wrap_GpuIndexIVF_getListLength, METH_VARARGS, " Returns the number of vectors present in a particular inverted list"},
+	 { "GpuIndexIVF_getListVectorData", _wrap_GpuIndexIVF_getListVectorData, METH_VARARGS, "\n"
+		"Return the encoded vector data contained in a particular inverted list,\n"
+		"for debugging purposes.\n"
+		"If gpuFormat is true, the data is returned as it is encoded in the\n"
+		"GPU-side representation.\n"
+		"Otherwise, it is converted to the CPU format.\n"
+		"compliant format, while the native GPU format may differ.\n"
+		""},
+	 { "GpuIndexIVF_getListIndices", _wrap_GpuIndexIVF_getListIndices, METH_VARARGS, "\n"
+		"Return the vector indices contained in a particular inverted list, for\n"
+		"debugging purposes.\n"
+		""},
+	 { "GpuIndexIVF_getQuantizer", _wrap_GpuIndexIVF_getQuantizer, METH_O, " Return the quantizer we're using"},
+	 { "GpuIndexIVF_setNumProbes", _wrap_GpuIndexIVF_setNumProbes, METH_VARARGS, " Sets the number of list probes per query"},
+	 { "GpuIndexIVF_getNumProbes", _wrap_GpuIndexIVF_getNumProbes, METH_O, " Returns our current number of list probes per query"},
+	 { "GpuIndexIVF_cp_set", _wrap_GpuIndexIVF_cp_set, METH_VARARGS, " Exposing this like the CPU version for manipulation"},
+	 { "GpuIndexIVF_cp_get", _wrap_GpuIndexIVF_cp_get, METH_O, " Exposing this like the CPU version for manipulation"},
+	 { "GpuIndexIVF_nlist_set", _wrap_GpuIndexIVF_nlist_set, METH_VARARGS, " Exposing this like the CPU version for query"},
+	 { "GpuIndexIVF_nlist_get", _wrap_GpuIndexIVF_nlist_get, METH_O, " Exposing this like the CPU version for query"},
+	 { "GpuIndexIVF_nprobe_set", _wrap_GpuIndexIVF_nprobe_set, METH_VARARGS, " Exposing this like the CPU version for manipulation"},
+	 { "GpuIndexIVF_nprobe_get", _wrap_GpuIndexIVF_nprobe_get, METH_O, " Exposing this like the CPU version for manipulation"},
+	 { "GpuIndexIVF_quantizer_set", _wrap_GpuIndexIVF_quantizer_set, METH_VARARGS, " Exposeing this like the CPU version for query"},
+	 { "GpuIndexIVF_quantizer_get", _wrap_GpuIndexIVF_quantizer_get, METH_O, " Exposeing this like the CPU version for query"},
+	 { "GpuIndexIVF_swigregister", GpuIndexIVF_swigregister, METH_O, NULL},
+	 { "new_GpuIndexIVFPQConfig", _wrap_new_GpuIndexIVFPQConfig, METH_NOARGS, NULL},
+	 { "GpuIndexIVFPQConfig_useFloat16LookupTables_set", _wrap_GpuIndexIVFPQConfig_useFloat16LookupTables_set, METH_VARARGS, "\n"
+		"Whether or not float16 residual distance tables are used in the\n"
+		"list scanning kernels. When subQuantizers * 2^bitsPerCode >\n"
+		"16384, this is required.\n"
+		""},
+	 { "GpuIndexIVFPQConfig_useFloat16LookupTables_get", _wrap_GpuIndexIVFPQConfig_useFloat16LookupTables_get, METH_O, "\n"
+		"Whether or not float16 residual distance tables are used in the\n"
+		"list scanning kernels. When subQuantizers * 2^bitsPerCode >\n"
+		"16384, this is required.\n"
+		""},
+	 { "GpuIndexIVFPQConfig_usePrecomputedTables_set", _wrap_GpuIndexIVFPQConfig_usePrecomputedTables_set, METH_VARARGS, "\n"
+		"Whether or not we enable the precomputed table option for\n"
+		"search, which can substantially increase the memory requirement.\n"
+		""},
+	 { "GpuIndexIVFPQConfig_usePrecomputedTables_get", _wrap_GpuIndexIVFPQConfig_usePrecomputedTables_get, METH_O, "\n"
+		"Whether or not we enable the precomputed table option for\n"
+		"search, which can substantially increase the memory requirement.\n"
+		""},
+	 { "GpuIndexIVFPQConfig_interleavedLayout_set", _wrap_GpuIndexIVFPQConfig_interleavedLayout_set, METH_VARARGS, "\n"
+		"Use the alternative memory layout for the IVF lists\n"
+		"WARNING: this is a feature under development, do not use!\n"
+		""},
+	 { "GpuIndexIVFPQConfig_interleavedLayout_get", _wrap_GpuIndexIVFPQConfig_interleavedLayout_get, METH_O, "\n"
+		"Use the alternative memory layout for the IVF lists\n"
+		"WARNING: this is a feature under development, do not use!\n"
+		""},
+	 { "GpuIndexIVFPQConfig_useMMCodeDistance_set", _wrap_GpuIndexIVFPQConfig_useMMCodeDistance_set, METH_VARARGS, "\n"
+		"Use GEMM-backed computation of PQ code distances for the no precomputed\n"
+		"table version of IVFPQ.\n"
+		"This is for debugging purposes, it should not substantially affect the\n"
+		"results one way for another.\n"
+		"\n"
+		"Note that MM code distance is enabled automatically if one uses a number\n"
+		"of dimensions per sub-quantizer that is not natively specialized (an odd\n"
+		"number like 7 or so).\n"
+		""},
+	 { "GpuIndexIVFPQConfig_useMMCodeDistance_get", _wrap_GpuIndexIVFPQConfig_useMMCodeDistance_get, METH_O, "\n"
+		"Use GEMM-backed computation of PQ code distances for the no precomputed\n"
+		"table version of IVFPQ.\n"
+		"This is for debugging purposes, it should not substantially affect the\n"
+		"results one way for another.\n"
+		"\n"
+		"Note that MM code distance is enabled automatically if one uses a number\n"
+		"of dimensions per sub-quantizer that is not natively specialized (an odd\n"
+		"number like 7 or so).\n"
+		""},
+	 { "delete_GpuIndexIVFPQConfig", _wrap_delete_GpuIndexIVFPQConfig, METH_O, NULL},
+	 { "GpuIndexIVFPQConfig_swigregister", GpuIndexIVFPQConfig_swigregister, METH_O, NULL},
+	 { "GpuIndexIVFPQConfig_swiginit", GpuIndexIVFPQConfig_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuIndexIVFPQ", _wrap_new_GpuIndexIVFPQ, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"Construct from a pre-existing faiss::IndexIVFPQ instance, copying\n"
+		"data over to the given GPU, if the input index is trained.\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"Construct an empty index\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 3:*\n"
+		"Construct an empty index\n"
+		""},
+	 { "delete_GpuIndexIVFPQ", _wrap_delete_GpuIndexIVFPQ, METH_O, NULL},
+	 { "GpuIndexIVFPQ_copyFrom", _wrap_GpuIndexIVFPQ_copyFrom, METH_VARARGS, "\n"
+		"Reserve space on the GPU for the inverted lists for `num`\n"
+		"vectors, assumed equally distributed among\n"
+		"Initialize ourselves from the given CPU index; will overwrite\n"
+		"all data in ourselves\n"
+		""},
+	 { "GpuIndexIVFPQ_copyTo", _wrap_GpuIndexIVFPQ_copyTo, METH_VARARGS, "\n"
+		"Copy ourselves to the given CPU index; will overwrite all data\n"
+		"in the index instance\n"
+		""},
+	 { "GpuIndexIVFPQ_reserveMemory", _wrap_GpuIndexIVFPQ_reserveMemory, METH_VARARGS, " Reserve GPU memory in our inverted lists for this number of vectors"},
+	 { "GpuIndexIVFPQ_setPrecomputedCodes", _wrap_GpuIndexIVFPQ_setPrecomputedCodes, METH_VARARGS, " Enable or disable pre-computed codes"},
+	 { "GpuIndexIVFPQ_getPrecomputedCodes", _wrap_GpuIndexIVFPQ_getPrecomputedCodes, METH_O, " Are pre-computed codes enabled?"},
+	 { "GpuIndexIVFPQ_getNumSubQuantizers", _wrap_GpuIndexIVFPQ_getNumSubQuantizers, METH_O, " Return the number of sub-quantizers we are using"},
+	 { "GpuIndexIVFPQ_getBitsPerCode", _wrap_GpuIndexIVFPQ_getBitsPerCode, METH_O, " Return the number of bits per PQ code"},
+	 { "GpuIndexIVFPQ_getCentroidsPerSubQuantizer", _wrap_GpuIndexIVFPQ_getCentroidsPerSubQuantizer, METH_O, " Return the number of centroids per PQ code (2^bits per code)"},
+	 { "GpuIndexIVFPQ_reclaimMemory", _wrap_GpuIndexIVFPQ_reclaimMemory, METH_O, "\n"
+		"After adding vectors, one can call this to reclaim device memory\n"
+		"to exactly the amount needed. Returns space reclaimed in bytes\n"
+		""},
+	 { "GpuIndexIVFPQ_reset", _wrap_GpuIndexIVFPQ_reset, METH_O, "\n"
+		"Clears out all inverted lists, but retains the coarse and\n"
+		"product centroid information\n"
+		""},
+	 { "GpuIndexIVFPQ_train", _wrap_GpuIndexIVFPQ_train, METH_VARARGS, " Trains the coarse and product quantizer based on the given vector data"},
+	 { "GpuIndexIVFPQ_getListLength", _wrap_GpuIndexIVFPQ_getListLength, METH_VARARGS, " Returns the number of vectors present in a particular inverted list"},
+	 { "GpuIndexIVFPQ_getListVectorData", _wrap_GpuIndexIVFPQ_getListVectorData, METH_VARARGS, "\n"
+		"Return the encoded vector data contained in a particular inverted list,\n"
+		"for debugging purposes.\n"
+		"If gpuFormat is true, the data is returned as it is encoded in the\n"
+		"GPU-side representation.\n"
+		"Otherwise, it is converted to the CPU format.\n"
+		"compliant format, while the native GPU format may differ.\n"
+		""},
+	 { "GpuIndexIVFPQ_getListIndices", _wrap_GpuIndexIVFPQ_getListIndices, METH_VARARGS, "\n"
+		"Return the vector indices contained in a particular inverted list, for\n"
+		"debugging purposes.\n"
+		""},
+	 { "GpuIndexIVFPQ_pq_set", _wrap_GpuIndexIVFPQ_pq_set, METH_VARARGS, "\n"
+		"Like the CPU version, we expose a publically-visible ProductQuantizer\n"
+		"for manipulation\n"
+		""},
+	 { "GpuIndexIVFPQ_pq_get", _wrap_GpuIndexIVFPQ_pq_get, METH_O, "\n"
+		"Like the CPU version, we expose a publically-visible ProductQuantizer\n"
+		"for manipulation\n"
+		""},
+	 { "GpuIndexIVFPQ_swigregister", GpuIndexIVFPQ_swigregister, METH_O, NULL},
+	 { "GpuIndexIVFPQ_swiginit", GpuIndexIVFPQ_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuIndexIVFFlatConfig", _wrap_new_GpuIndexIVFFlatConfig, METH_NOARGS, NULL},
+	 { "GpuIndexIVFFlatConfig_interleavedLayout_set", _wrap_GpuIndexIVFFlatConfig_interleavedLayout_set, METH_VARARGS, "\n"
+		"Use the alternative memory layout for the IVF lists\n"
+		"(currently the default)\n"
+		""},
+	 { "GpuIndexIVFFlatConfig_interleavedLayout_get", _wrap_GpuIndexIVFFlatConfig_interleavedLayout_get, METH_O, "\n"
+		"Use the alternative memory layout for the IVF lists\n"
+		"(currently the default)\n"
+		""},
+	 { "delete_GpuIndexIVFFlatConfig", _wrap_delete_GpuIndexIVFFlatConfig, METH_O, NULL},
+	 { "GpuIndexIVFFlatConfig_swigregister", GpuIndexIVFFlatConfig_swigregister, METH_O, NULL},
+	 { "GpuIndexIVFFlatConfig_swiginit", GpuIndexIVFFlatConfig_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuIndexIVFFlat", _wrap_new_GpuIndexIVFFlat, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"Construct from a pre-existing faiss::IndexIVFFlat instance, copying\n"
+		"data over to the given GPU, if the input index is trained.\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"Constructs a new instance with an empty flat quantizer; the user\n"
+		"provides the number of lists desired.\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 3:*\n"
+		"Constructs a new instance with an empty flat quantizer; the user\n"
+		"provides the number of lists desired.\n"
+		""},
+	 { "delete_GpuIndexIVFFlat", _wrap_delete_GpuIndexIVFFlat, METH_O, NULL},
+	 { "GpuIndexIVFFlat_reserveMemory", _wrap_GpuIndexIVFFlat_reserveMemory, METH_VARARGS, " Reserve GPU memory in our inverted lists for this number of vectors"},
+	 { "GpuIndexIVFFlat_copyFrom", _wrap_GpuIndexIVFFlat_copyFrom, METH_VARARGS, "\n"
+		"Initialize ourselves from the given CPU index; will overwrite\n"
+		"all data in ourselves\n"
+		""},
+	 { "GpuIndexIVFFlat_copyTo", _wrap_GpuIndexIVFFlat_copyTo, METH_VARARGS, "\n"
+		"Copy ourselves to the given CPU index; will overwrite all data\n"
+		"in the index instance\n"
+		""},
+	 { "GpuIndexIVFFlat_reclaimMemory", _wrap_GpuIndexIVFFlat_reclaimMemory, METH_O, "\n"
+		"After adding vectors, one can call this to reclaim device memory\n"
+		"to exactly the amount needed. Returns space reclaimed in bytes\n"
+		""},
+	 { "GpuIndexIVFFlat_reset", _wrap_GpuIndexIVFFlat_reset, METH_O, "\n"
+		"Clears out all inverted lists, but retains the coarse centroid\n"
+		"information\n"
+		""},
+	 { "GpuIndexIVFFlat_train", _wrap_GpuIndexIVFFlat_train, METH_VARARGS, " Trains the coarse quantizer based on the given vector data"},
+	 { "GpuIndexIVFFlat_getListLength", _wrap_GpuIndexIVFFlat_getListLength, METH_VARARGS, " Returns the number of vectors present in a particular inverted list"},
+	 { "GpuIndexIVFFlat_getListVectorData", _wrap_GpuIndexIVFFlat_getListVectorData, METH_VARARGS, "\n"
+		"Return the encoded vector data contained in a particular inverted list,\n"
+		"for debugging purposes.\n"
+		"If gpuFormat is true, the data is returned as it is encoded in the\n"
+		"GPU-side representation.\n"
+		"Otherwise, it is converted to the CPU format.\n"
+		"compliant format, while the native GPU format may differ.\n"
+		""},
+	 { "GpuIndexIVFFlat_getListIndices", _wrap_GpuIndexIVFFlat_getListIndices, METH_VARARGS, "\n"
+		"Return the vector indices contained in a particular inverted list, for\n"
+		"debugging purposes.\n"
+		""},
+	 { "GpuIndexIVFFlat_swigregister", GpuIndexIVFFlat_swigregister, METH_O, NULL},
+	 { "GpuIndexIVFFlat_swiginit", GpuIndexIVFFlat_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuIndexIVFScalarQuantizerConfig", _wrap_new_GpuIndexIVFScalarQuantizerConfig, METH_NOARGS, NULL},
+	 { "GpuIndexIVFScalarQuantizerConfig_interleavedLayout_set", _wrap_GpuIndexIVFScalarQuantizerConfig_interleavedLayout_set, METH_VARARGS, "\n"
+		"Use the alternative memory layout for the IVF lists\n"
+		"(currently the default)\n"
+		""},
+	 { "GpuIndexIVFScalarQuantizerConfig_interleavedLayout_get", _wrap_GpuIndexIVFScalarQuantizerConfig_interleavedLayout_get, METH_O, "\n"
+		"Use the alternative memory layout for the IVF lists\n"
+		"(currently the default)\n"
+		""},
+	 { "delete_GpuIndexIVFScalarQuantizerConfig", _wrap_delete_GpuIndexIVFScalarQuantizerConfig, METH_O, NULL},
+	 { "GpuIndexIVFScalarQuantizerConfig_swigregister", GpuIndexIVFScalarQuantizerConfig_swigregister, METH_O, NULL},
+	 { "GpuIndexIVFScalarQuantizerConfig_swiginit", GpuIndexIVFScalarQuantizerConfig_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuIndexIVFScalarQuantizer", _wrap_new_GpuIndexIVFScalarQuantizer, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"Construct from a pre-existing faiss::IndexIVFScalarQuantizer instance,\n"
+		"copying data over to the given GPU, if the input index is trained.\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"Constructs a new instance with an empty flat quantizer; the user\n"
+		"provides the number of lists desired.\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 3:*\n"
+		"Constructs a new instance with an empty flat quantizer; the user\n"
+		"provides the number of lists desired.\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 4:*\n"
+		"Constructs a new instance with an empty flat quantizer; the user\n"
+		"provides the number of lists desired.\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 5:*\n"
+		"Constructs a new instance with an empty flat quantizer; the user\n"
+		"provides the number of lists desired.\n"
+		""},
+	 { "delete_GpuIndexIVFScalarQuantizer", _wrap_delete_GpuIndexIVFScalarQuantizer, METH_O, NULL},
+	 { "GpuIndexIVFScalarQuantizer_reserveMemory", _wrap_GpuIndexIVFScalarQuantizer_reserveMemory, METH_VARARGS, " Reserve GPU memory in our inverted lists for this number of vectors"},
+	 { "GpuIndexIVFScalarQuantizer_copyFrom", _wrap_GpuIndexIVFScalarQuantizer_copyFrom, METH_VARARGS, "\n"
+		"Initialize ourselves from the given CPU index; will overwrite\n"
+		"all data in ourselves\n"
+		""},
+	 { "GpuIndexIVFScalarQuantizer_copyTo", _wrap_GpuIndexIVFScalarQuantizer_copyTo, METH_VARARGS, "\n"
+		"Copy ourselves to the given CPU index; will overwrite all data\n"
+		"in the index instance\n"
+		""},
+	 { "GpuIndexIVFScalarQuantizer_reclaimMemory", _wrap_GpuIndexIVFScalarQuantizer_reclaimMemory, METH_O, "\n"
+		"After adding vectors, one can call this to reclaim device memory\n"
+		"to exactly the amount needed. Returns space reclaimed in bytes\n"
+		""},
+	 { "GpuIndexIVFScalarQuantizer_reset", _wrap_GpuIndexIVFScalarQuantizer_reset, METH_O, "\n"
+		"Clears out all inverted lists, but retains the coarse and scalar\n"
+		"quantizer information\n"
+		""},
+	 { "GpuIndexIVFScalarQuantizer_train", _wrap_GpuIndexIVFScalarQuantizer_train, METH_VARARGS, " Trains the coarse and scalar quantizer based on the given vector data"},
+	 { "GpuIndexIVFScalarQuantizer_getListLength", _wrap_GpuIndexIVFScalarQuantizer_getListLength, METH_VARARGS, " Returns the number of vectors present in a particular inverted list"},
+	 { "GpuIndexIVFScalarQuantizer_getListVectorData", _wrap_GpuIndexIVFScalarQuantizer_getListVectorData, METH_VARARGS, "\n"
+		"Return the encoded vector data contained in a particular inverted list,\n"
+		"for debugging purposes.\n"
+		"If gpuFormat is true, the data is returned as it is encoded in the\n"
+		"GPU-side representation.\n"
+		"Otherwise, it is converted to the CPU format.\n"
+		"compliant format, while the native GPU format may differ.\n"
+		""},
+	 { "GpuIndexIVFScalarQuantizer_getListIndices", _wrap_GpuIndexIVFScalarQuantizer_getListIndices, METH_VARARGS, "\n"
+		"Return the vector indices contained in a particular inverted list, for\n"
+		"debugging purposes.\n"
+		""},
+	 { "GpuIndexIVFScalarQuantizer_sq_set", _wrap_GpuIndexIVFScalarQuantizer_sq_set, METH_VARARGS, " Exposed like the CPU version"},
+	 { "GpuIndexIVFScalarQuantizer_sq_get", _wrap_GpuIndexIVFScalarQuantizer_sq_get, METH_O, " Exposed like the CPU version"},
+	 { "GpuIndexIVFScalarQuantizer_by_residual_set", _wrap_GpuIndexIVFScalarQuantizer_by_residual_set, METH_VARARGS, " Exposed like the CPU version"},
+	 { "GpuIndexIVFScalarQuantizer_by_residual_get", _wrap_GpuIndexIVFScalarQuantizer_by_residual_get, METH_O, " Exposed like the CPU version"},
+	 { "GpuIndexIVFScalarQuantizer_swigregister", GpuIndexIVFScalarQuantizer_swigregister, METH_O, NULL},
+	 { "GpuIndexIVFScalarQuantizer_swiginit", GpuIndexIVFScalarQuantizer_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuIndexBinaryFlatConfig", _wrap_new_GpuIndexBinaryFlatConfig, METH_NOARGS, NULL},
+	 { "delete_GpuIndexBinaryFlatConfig", _wrap_delete_GpuIndexBinaryFlatConfig, METH_O, NULL},
+	 { "GpuIndexBinaryFlatConfig_swigregister", GpuIndexBinaryFlatConfig_swigregister, METH_O, NULL},
+	 { "GpuIndexBinaryFlatConfig_swiginit", GpuIndexBinaryFlatConfig_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuIndexBinaryFlat", _wrap_new_GpuIndexBinaryFlat, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"Construct from a pre-existing faiss::IndexBinaryFlat instance, copying\n"
+		"data over to the given GPU\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"Construct an empty instance that can be added to\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 3:*\n"
+		"Construct an empty instance that can be added to\n"
+		""},
+	 { "delete_GpuIndexBinaryFlat", _wrap_delete_GpuIndexBinaryFlat, METH_O, NULL},
+	 { "GpuIndexBinaryFlat_getDevice", _wrap_GpuIndexBinaryFlat_getDevice, METH_O, " Returns the device that this index is resident on"},
+	 { "GpuIndexBinaryFlat_getResources", _wrap_GpuIndexBinaryFlat_getResources, METH_O, "\n"
+		"Returns a reference to our GpuResources object that manages memory,\n"
+		"stream and handle resources on the GPU\n"
+		""},
+	 { "GpuIndexBinaryFlat_copyFrom", _wrap_GpuIndexBinaryFlat_copyFrom, METH_VARARGS, "\n"
+		"Initialize ourselves from the given CPU index; will overwrite\n"
+		"all data in ourselves\n"
+		""},
+	 { "GpuIndexBinaryFlat_copyTo", _wrap_GpuIndexBinaryFlat_copyTo, METH_VARARGS, "\n"
+		"Copy ourselves to the given CPU index; will overwrite all data\n"
+		"in the index instance\n"
+		""},
+	 { "GpuIndexBinaryFlat_add", _wrap_GpuIndexBinaryFlat_add, METH_VARARGS, NULL},
+	 { "GpuIndexBinaryFlat_reset", _wrap_GpuIndexBinaryFlat_reset, METH_O, NULL},
+	 { "GpuIndexBinaryFlat_search", _wrap_GpuIndexBinaryFlat_search, METH_VARARGS, NULL},
+	 { "GpuIndexBinaryFlat_reconstruct", _wrap_GpuIndexBinaryFlat_reconstruct, METH_VARARGS, NULL},
+	 { "GpuIndexBinaryFlat_swigregister", GpuIndexBinaryFlat_swigregister, METH_O, NULL},
+	 { "GpuIndexBinaryFlat_swiginit", GpuIndexBinaryFlat_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuDistanceParams", _wrap_new_GpuDistanceParams, METH_NOARGS, NULL},
+	 { "GpuDistanceParams_metric_set", _wrap_GpuDistanceParams_metric_set, METH_VARARGS, " Search parameter: distance metric"},
+	 { "GpuDistanceParams_metric_get", _wrap_GpuDistanceParams_metric_get, METH_O, " Search parameter: distance metric"},
+	 { "GpuDistanceParams_metricArg_set", _wrap_GpuDistanceParams_metricArg_set, METH_VARARGS, "\n"
+		"Search parameter: distance metric argument (if applicable)\n"
+		"For metric == METRIC_Lp, this is the p-value\n"
+		""},
+	 { "GpuDistanceParams_metricArg_get", _wrap_GpuDistanceParams_metricArg_get, METH_O, "\n"
+		"Search parameter: distance metric argument (if applicable)\n"
+		"For metric == METRIC_Lp, this is the p-value\n"
+		""},
+	 { "GpuDistanceParams_k_set", _wrap_GpuDistanceParams_k_set, METH_VARARGS, "\n"
+		"Search parameter: return k nearest neighbors\n"
+		"If the value provided is -1, then we report all pairwise distances\n"
+		"without top-k filtering\n"
+		""},
+	 { "GpuDistanceParams_k_get", _wrap_GpuDistanceParams_k_get, METH_O, "\n"
+		"Search parameter: return k nearest neighbors\n"
+		"If the value provided is -1, then we report all pairwise distances\n"
+		"without top-k filtering\n"
+		""},
+	 { "GpuDistanceParams_dims_set", _wrap_GpuDistanceParams_dims_set, METH_VARARGS, " Vector dimensionality"},
+	 { "GpuDistanceParams_dims_get", _wrap_GpuDistanceParams_dims_get, METH_O, " Vector dimensionality"},
+	 { "GpuDistanceParams_vectors_set", _wrap_GpuDistanceParams_vectors_set, METH_VARARGS, "\n"
+		"If vectorsRowMajor is true, this is\n"
+		"numVectors x dims, with dims innermost; otherwise,\n"
+		"dims x numVectors, with numVectors innermost\n"
+		""},
+	 { "GpuDistanceParams_vectors_get", _wrap_GpuDistanceParams_vectors_get, METH_O, "\n"
+		"If vectorsRowMajor is true, this is\n"
+		"numVectors x dims, with dims innermost; otherwise,\n"
+		"dims x numVectors, with numVectors innermost\n"
+		""},
+	 { "GpuDistanceParams_vectorType_set", _wrap_GpuDistanceParams_vectorType_set, METH_VARARGS, NULL},
+	 { "GpuDistanceParams_vectorType_get", _wrap_GpuDistanceParams_vectorType_get, METH_O, NULL},
+	 { "GpuDistanceParams_vectorsRowMajor_set", _wrap_GpuDistanceParams_vectorsRowMajor_set, METH_VARARGS, NULL},
+	 { "GpuDistanceParams_vectorsRowMajor_get", _wrap_GpuDistanceParams_vectorsRowMajor_get, METH_O, NULL},
+	 { "GpuDistanceParams_numVectors_set", _wrap_GpuDistanceParams_numVectors_set, METH_VARARGS, NULL},
+	 { "GpuDistanceParams_numVectors_get", _wrap_GpuDistanceParams_numVectors_get, METH_O, NULL},
+	 { "GpuDistanceParams_vectorNorms_set", _wrap_GpuDistanceParams_vectorNorms_set, METH_VARARGS, "\n"
+		"Precomputed L2 norms for each vector in `vectors`, which can be\n"
+		"optionally provided in advance to speed computation for METRIC_L2\n"
+		""},
+	 { "GpuDistanceParams_vectorNorms_get", _wrap_GpuDistanceParams_vectorNorms_get, METH_O, "\n"
+		"Precomputed L2 norms for each vector in `vectors`, which can be\n"
+		"optionally provided in advance to speed computation for METRIC_L2\n"
+		""},
+	 { "GpuDistanceParams_queries_set", _wrap_GpuDistanceParams_queries_set, METH_VARARGS, "\n"
+		"If queriesRowMajor is true, this is\n"
+		"numQueries x dims, with dims innermost; otherwise,\n"
+		"dims x numQueries, with numQueries innermost\n"
+		""},
+	 { "GpuDistanceParams_queries_get", _wrap_GpuDistanceParams_queries_get, METH_O, "\n"
+		"If queriesRowMajor is true, this is\n"
+		"numQueries x dims, with dims innermost; otherwise,\n"
+		"dims x numQueries, with numQueries innermost\n"
+		""},
+	 { "GpuDistanceParams_queryType_set", _wrap_GpuDistanceParams_queryType_set, METH_VARARGS, NULL},
+	 { "GpuDistanceParams_queryType_get", _wrap_GpuDistanceParams_queryType_get, METH_O, NULL},
+	 { "GpuDistanceParams_queriesRowMajor_set", _wrap_GpuDistanceParams_queriesRowMajor_set, METH_VARARGS, NULL},
+	 { "GpuDistanceParams_queriesRowMajor_get", _wrap_GpuDistanceParams_queriesRowMajor_get, METH_O, NULL},
+	 { "GpuDistanceParams_numQueries_set", _wrap_GpuDistanceParams_numQueries_set, METH_VARARGS, NULL},
+	 { "GpuDistanceParams_numQueries_get", _wrap_GpuDistanceParams_numQueries_get, METH_O, NULL},
+	 { "GpuDistanceParams_outDistances_set", _wrap_GpuDistanceParams_outDistances_set, METH_VARARGS, "\n"
+		"A region of memory size numQueries x k, with k\n"
+		"innermost (row major) if k > 0, or if k == -1, a region of memory of\n"
+		"size numQueries x numVectors\n"
+		""},
+	 { "GpuDistanceParams_outDistances_get", _wrap_GpuDistanceParams_outDistances_get, METH_O, "\n"
+		"A region of memory size numQueries x k, with k\n"
+		"innermost (row major) if k > 0, or if k == -1, a region of memory of\n"
+		"size numQueries x numVectors\n"
+		""},
+	 { "GpuDistanceParams_ignoreOutDistances_set", _wrap_GpuDistanceParams_ignoreOutDistances_set, METH_VARARGS, "\n"
+		"Do we only care about the indices reported, rather than the output\n"
+		"distances? Not used if k == -1 (all pairwise distances)\n"
+		""},
+	 { "GpuDistanceParams_ignoreOutDistances_get", _wrap_GpuDistanceParams_ignoreOutDistances_get, METH_O, "\n"
+		"Do we only care about the indices reported, rather than the output\n"
+		"distances? Not used if k == -1 (all pairwise distances)\n"
+		""},
+	 { "GpuDistanceParams_outIndicesType_set", _wrap_GpuDistanceParams_outIndicesType_set, METH_VARARGS, "\n"
+		"A region of memory size numQueries x k, with k\n"
+		"innermost (row major). Not used if k == -1 (all pairwise distances)\n"
+		""},
+	 { "GpuDistanceParams_outIndicesType_get", _wrap_GpuDistanceParams_outIndicesType_get, METH_O, "\n"
+		"A region of memory size numQueries x k, with k\n"
+		"innermost (row major). Not used if k == -1 (all pairwise distances)\n"
+		""},
+	 { "GpuDistanceParams_outIndices_set", _wrap_GpuDistanceParams_outIndices_set, METH_VARARGS, NULL},
+	 { "GpuDistanceParams_outIndices_get", _wrap_GpuDistanceParams_outIndices_get, METH_O, NULL},
+	 { "delete_GpuDistanceParams", _wrap_delete_GpuDistanceParams, METH_O, NULL},
+	 { "GpuDistanceParams_swigregister", GpuDistanceParams_swigregister, METH_O, NULL},
+	 { "GpuDistanceParams_swiginit", GpuDistanceParams_swiginit, METH_VARARGS, NULL},
+	 { "bfKnn", _wrap_bfKnn, METH_VARARGS, "\n"
+		"A wrapper for gpu/impl/Distance.cuh to expose direct brute-force k-nearest\n"
+		"neighbor searches on an externally-provided region of memory (e.g., from a\n"
+		"pytorch tensor).\n"
+		"The data (vectors, queries, outDistances, outIndices) can be resident on the\n"
+		"GPU or the CPU, but all calculations are performed on the GPU. If the result\n"
+		"buffers are on the CPU, results will be copied back when done.\n"
+		"\n"
+		"All GPU computation is performed on the current CUDA device, and ordered\n"
+		"with respect to resources->getDefaultStreamCurrentDevice().\n"
+		"\n"
+		"For each vector in `queries`, searches all of `vectors` to find its k\n"
+		"nearest neighbors with respect to the given metric\n"
+		""},
+	 { "bruteForceKnn", _wrap_bruteForceKnn, METH_VARARGS, " Deprecated legacy implementation"},
+	 { "new_GpuIcmEncoder", _wrap_new_GpuIcmEncoder, METH_VARARGS, NULL},
+	 { "delete_GpuIcmEncoder", _wrap_delete_GpuIcmEncoder, METH_O, NULL},
+	 { "GpuIcmEncoder_set_binary_term", _wrap_GpuIcmEncoder_set_binary_term, METH_O, NULL},
+	 { "GpuIcmEncoder_encode", _wrap_GpuIcmEncoder_encode, METH_VARARGS, NULL},
+	 { "GpuIcmEncoder_swigregister", GpuIcmEncoder_swigregister, METH_O, NULL},
+	 { "GpuIcmEncoder_swiginit", GpuIcmEncoder_swiginit, METH_VARARGS, NULL},
+	 { "new_GpuIcmEncoderFactory", _wrap_new_GpuIcmEncoderFactory, METH_VARARGS, NULL},
+	 { "GpuIcmEncoderFactory_get", _wrap_GpuIcmEncoderFactory_get, METH_VARARGS, NULL},
+	 { "GpuIcmEncoderFactory_provs_set", _wrap_GpuIcmEncoderFactory_provs_set, METH_VARARGS, NULL},
+	 { "GpuIcmEncoderFactory_provs_get", _wrap_GpuIcmEncoderFactory_provs_get, METH_O, NULL},
+	 { "GpuIcmEncoderFactory_devices_set", _wrap_GpuIcmEncoderFactory_devices_set, METH_VARARGS, NULL},
+	 { "GpuIcmEncoderFactory_devices_get", _wrap_GpuIcmEncoderFactory_devices_get, METH_O, NULL},
+	 { "delete_GpuIcmEncoderFactory", _wrap_delete_GpuIcmEncoderFactory, METH_O, NULL},
+	 { "GpuIcmEncoderFactory_swigregister", GpuIcmEncoderFactory_swigregister, METH_O, NULL},
+	 { "GpuIcmEncoderFactory_swiginit", GpuIcmEncoderFactory_swiginit, METH_VARARGS, NULL},
+	 { "downcast_index", _wrap_downcast_index, METH_O, NULL},
+	 { "downcast_VectorTransform", _wrap_downcast_VectorTransform, METH_O, NULL},
+	 { "downcast_IndexBinary", _wrap_downcast_IndexBinary, METH_O, NULL},
+	 { "downcast_InvertedLists", _wrap_downcast_InvertedLists, METH_O, NULL},
+	 { "write_index", _wrap_write_index, METH_VARARGS, NULL},
+	 { "write_index_binary", _wrap_write_index_binary, METH_VARARGS, NULL},
+	 { "read_index", _wrap_read_index, METH_VARARGS, NULL},
+	 { "read_index_binary", _wrap_read_index_binary, METH_VARARGS, NULL},
+	 { "write_VectorTransform", _wrap_write_VectorTransform, METH_VARARGS, NULL},
+	 { "read_VectorTransform", _wrap_read_VectorTransform, METH_O, NULL},
+	 { "read_ProductQuantizer", _wrap_read_ProductQuantizer, METH_VARARGS, NULL},
+	 { "write_ProductQuantizer", _wrap_write_ProductQuantizer, METH_VARARGS, NULL},
+	 { "write_InvertedLists", _wrap_write_InvertedLists, METH_VARARGS, NULL},
+	 { "read_InvertedLists", _wrap_read_InvertedLists, METH_VARARGS, NULL},
+	 { "clone_index", _wrap_clone_index, METH_O, NULL},
+	 { "Cloner_clone_VectorTransform", _wrap_Cloner_clone_VectorTransform, METH_VARARGS, NULL},
+	 { "Cloner_clone_Index", _wrap_Cloner_clone_Index, METH_VARARGS, NULL},
+	 { "Cloner_clone_IndexIVF", _wrap_Cloner_clone_IndexIVF, METH_VARARGS, NULL},
+	 { "delete_Cloner", _wrap_delete_Cloner, METH_O, NULL},
+	 { "new_Cloner", _wrap_new_Cloner, METH_NOARGS, NULL},
+	 { "Cloner_swigregister", Cloner_swigregister, METH_O, NULL},
+	 { "Cloner_swiginit", Cloner_swiginit, METH_VARARGS, NULL},
+	 { "AutoTuneCriterion_nq_set", _wrap_AutoTuneCriterion_nq_set, METH_VARARGS, " nb of queries this criterion is evaluated on"},
+	 { "AutoTuneCriterion_nq_get", _wrap_AutoTuneCriterion_nq_get, METH_O, " nb of queries this criterion is evaluated on"},
+	 { "AutoTuneCriterion_nnn_set", _wrap_AutoTuneCriterion_nnn_set, METH_VARARGS, " nb of NNs that the query should request"},
+	 { "AutoTuneCriterion_nnn_get", _wrap_AutoTuneCriterion_nnn_get, METH_O, " nb of NNs that the query should request"},
+	 { "AutoTuneCriterion_gt_nnn_set", _wrap_AutoTuneCriterion_gt_nnn_set, METH_VARARGS, " nb of GT NNs required to evaluate criterion"},
+	 { "AutoTuneCriterion_gt_nnn_get", _wrap_AutoTuneCriterion_gt_nnn_get, METH_O, " nb of GT NNs required to evaluate criterion"},
+	 { "AutoTuneCriterion_gt_D_set", _wrap_AutoTuneCriterion_gt_D_set, METH_VARARGS, " Ground-truth distances (size nq * gt_nnn)"},
+	 { "AutoTuneCriterion_gt_D_get", _wrap_AutoTuneCriterion_gt_D_get, METH_O, " Ground-truth distances (size nq * gt_nnn)"},
+	 { "AutoTuneCriterion_gt_I_set", _wrap_AutoTuneCriterion_gt_I_set, METH_VARARGS, " Ground-truth indexes (size nq * gt_nnn)"},
+	 { "AutoTuneCriterion_gt_I_get", _wrap_AutoTuneCriterion_gt_I_get, METH_O, " Ground-truth indexes (size nq * gt_nnn)"},
+	 { "AutoTuneCriterion_set_groundtruth", _wrap_AutoTuneCriterion_set_groundtruth, METH_VARARGS, "\n"
+		" Intitializes the gt_D and gt_I vectors. Must be called before evaluating\n"
+		"\n"
+		":type gt_D_in: float\n"
+		":param gt_D_in:  size nq * gt_nnn\n"
+		":type gt_I_in: int\n"
+		":param gt_I_in:  size nq * gt_nnn\n"
+		""},
+	 { "AutoTuneCriterion_evaluate", _wrap_AutoTuneCriterion_evaluate, METH_VARARGS, "\n"
+		" Evaluate the criterion.\n"
+		"\n"
+		":type D: float\n"
+		":param D:  size nq * nnn\n"
+		":type I: int\n"
+		":param I:  size nq * nnn\n"
+		":rtype: float\n"
+		":return: the criterion, between 0 and 1. Larger is better.\n"
+		""},
+	 { "delete_AutoTuneCriterion", _wrap_delete_AutoTuneCriterion, METH_O, NULL},
+	 { "AutoTuneCriterion_swigregister", AutoTuneCriterion_swigregister, METH_O, NULL},
+	 { "OneRecallAtRCriterion_R_set", _wrap_OneRecallAtRCriterion_R_set, METH_VARARGS, NULL},
+	 { "OneRecallAtRCriterion_R_get", _wrap_OneRecallAtRCriterion_R_get, METH_O, NULL},
+	 { "new_OneRecallAtRCriterion", _wrap_new_OneRecallAtRCriterion, METH_VARARGS, NULL},
+	 { "OneRecallAtRCriterion_evaluate", _wrap_OneRecallAtRCriterion_evaluate, METH_VARARGS, NULL},
+	 { "delete_OneRecallAtRCriterion", _wrap_delete_OneRecallAtRCriterion, METH_O, NULL},
+	 { "OneRecallAtRCriterion_swigregister", OneRecallAtRCriterion_swigregister, METH_O, NULL},
+	 { "OneRecallAtRCriterion_swiginit", OneRecallAtRCriterion_swiginit, METH_VARARGS, NULL},
+	 { "IntersectionCriterion_R_set", _wrap_IntersectionCriterion_R_set, METH_VARARGS, NULL},
+	 { "IntersectionCriterion_R_get", _wrap_IntersectionCriterion_R_get, METH_O, NULL},
+	 { "new_IntersectionCriterion", _wrap_new_IntersectionCriterion, METH_VARARGS, NULL},
+	 { "IntersectionCriterion_evaluate", _wrap_IntersectionCriterion_evaluate, METH_VARARGS, NULL},
+	 { "delete_IntersectionCriterion", _wrap_delete_IntersectionCriterion, METH_O, NULL},
+	 { "IntersectionCriterion_swigregister", IntersectionCriterion_swigregister, METH_O, NULL},
+	 { "IntersectionCriterion_swiginit", IntersectionCriterion_swiginit, METH_VARARGS, NULL},
+	 { "OperatingPoint_perf_set", _wrap_OperatingPoint_perf_set, METH_VARARGS, " performance measure (output of a Criterion)"},
+	 { "OperatingPoint_perf_get", _wrap_OperatingPoint_perf_get, METH_O, " performance measure (output of a Criterion)"},
+	 { "OperatingPoint_t_set", _wrap_OperatingPoint_t_set, METH_VARARGS, " corresponding execution time (ms)"},
+	 { "OperatingPoint_t_get", _wrap_OperatingPoint_t_get, METH_O, " corresponding execution time (ms)"},
+	 { "OperatingPoint_key_set", _wrap_OperatingPoint_key_set, METH_VARARGS, " key that identifies this op pt"},
+	 { "OperatingPoint_key_get", _wrap_OperatingPoint_key_get, METH_O, " key that identifies this op pt"},
+	 { "OperatingPoint_cno_set", _wrap_OperatingPoint_cno_set, METH_VARARGS, " integer identifer"},
+	 { "OperatingPoint_cno_get", _wrap_OperatingPoint_cno_get, METH_O, " integer identifer"},
+	 { "new_OperatingPoint", _wrap_new_OperatingPoint, METH_NOARGS, NULL},
+	 { "delete_OperatingPoint", _wrap_delete_OperatingPoint, METH_O, NULL},
+	 { "OperatingPoint_swigregister", OperatingPoint_swigregister, METH_O, NULL},
+	 { "OperatingPoint_swiginit", OperatingPoint_swiginit, METH_VARARGS, NULL},
+	 { "OperatingPoints_all_pts_set", _wrap_OperatingPoints_all_pts_set, METH_VARARGS, " all operating points"},
+	 { "OperatingPoints_all_pts_get", _wrap_OperatingPoints_all_pts_get, METH_O, " all operating points"},
+	 { "OperatingPoints_optimal_pts_set", _wrap_OperatingPoints_optimal_pts_set, METH_VARARGS, " optimal operating points, sorted by perf"},
+	 { "OperatingPoints_optimal_pts_get", _wrap_OperatingPoints_optimal_pts_get, METH_O, " optimal operating points, sorted by perf"},
+	 { "new_OperatingPoints", _wrap_new_OperatingPoints, METH_NOARGS, NULL},
+	 { "OperatingPoints_merge_with", _wrap_OperatingPoints_merge_with, METH_VARARGS, " add operating points from other to this, with a prefix to the keys"},
+	 { "OperatingPoints_clear", _wrap_OperatingPoints_clear, METH_O, NULL},
+	 { "OperatingPoints_add", _wrap_OperatingPoints_add, METH_VARARGS, " add a performance measure. Return whether it is an optimal point"},
+	 { "OperatingPoints_t_for_perf", _wrap_OperatingPoints_t_for_perf, METH_VARARGS, " get time required to obtain a given performance measure"},
+	 { "OperatingPoints_display", _wrap_OperatingPoints_display, METH_VARARGS, " easy-to-read output"},
+	 { "OperatingPoints_all_to_gnuplot", _wrap_OperatingPoints_all_to_gnuplot, METH_VARARGS, " output to a format easy to digest by gnuplot"},
+	 { "OperatingPoints_optimal_to_gnuplot", _wrap_OperatingPoints_optimal_to_gnuplot, METH_VARARGS, NULL},
+	 { "delete_OperatingPoints", _wrap_delete_OperatingPoints, METH_O, NULL},
+	 { "OperatingPoints_swigregister", OperatingPoints_swigregister, METH_O, NULL},
+	 { "OperatingPoints_swiginit", OperatingPoints_swiginit, METH_VARARGS, NULL},
+	 { "ParameterRange_name_set", _wrap_ParameterRange_name_set, METH_VARARGS, NULL},
+	 { "ParameterRange_name_get", _wrap_ParameterRange_name_get, METH_O, NULL},
+	 { "ParameterRange_values_set", _wrap_ParameterRange_values_set, METH_VARARGS, NULL},
+	 { "ParameterRange_values_get", _wrap_ParameterRange_values_get, METH_O, NULL},
+	 { "new_ParameterRange", _wrap_new_ParameterRange, METH_NOARGS, NULL},
+	 { "delete_ParameterRange", _wrap_delete_ParameterRange, METH_O, NULL},
+	 { "ParameterRange_swigregister", ParameterRange_swigregister, METH_O, NULL},
+	 { "ParameterRange_swiginit", ParameterRange_swiginit, METH_VARARGS, NULL},
+	 { "ParameterSpace_parameter_ranges_set", _wrap_ParameterSpace_parameter_ranges_set, METH_VARARGS, " all tunable parameters"},
+	 { "ParameterSpace_parameter_ranges_get", _wrap_ParameterSpace_parameter_ranges_get, METH_O, " all tunable parameters"},
+	 { "ParameterSpace_verbose_set", _wrap_ParameterSpace_verbose_set, METH_VARARGS, " verbosity during exploration"},
+	 { "ParameterSpace_verbose_get", _wrap_ParameterSpace_verbose_get, METH_O, " verbosity during exploration"},
+	 { "ParameterSpace_n_experiments_set", _wrap_ParameterSpace_n_experiments_set, METH_VARARGS, " nb of experiments during optimization (0 = try all combinations)"},
+	 { "ParameterSpace_n_experiments_get", _wrap_ParameterSpace_n_experiments_get, METH_O, " nb of experiments during optimization (0 = try all combinations)"},
+	 { "ParameterSpace_batchsize_set", _wrap_ParameterSpace_batchsize_set, METH_VARARGS, " maximum number of queries to submit at a time."},
+	 { "ParameterSpace_batchsize_get", _wrap_ParameterSpace_batchsize_get, METH_O, " maximum number of queries to submit at a time."},
+	 { "ParameterSpace_thread_over_batches_set", _wrap_ParameterSpace_thread_over_batches_set, METH_VARARGS, "\n"
+		"use multithreading over batches (useful to benchmark\n"
+		"independent single-searches)\n"
+		""},
+	 { "ParameterSpace_thread_over_batches_get", _wrap_ParameterSpace_thread_over_batches_get, METH_O, "\n"
+		"use multithreading over batches (useful to benchmark\n"
+		"independent single-searches)\n"
+		""},
+	 { "ParameterSpace_min_test_duration_set", _wrap_ParameterSpace_min_test_duration_set, METH_VARARGS, "\n"
+		"run tests several times until they reach at least this\n"
+		"duration (to avoid jittering in MT mode)\n"
+		""},
+	 { "ParameterSpace_min_test_duration_get", _wrap_ParameterSpace_min_test_duration_get, METH_O, "\n"
+		"run tests several times until they reach at least this\n"
+		"duration (to avoid jittering in MT mode)\n"
+		""},
+	 { "new_ParameterSpace", _wrap_new_ParameterSpace, METH_NOARGS, NULL},
+	 { "ParameterSpace_n_combinations", _wrap_ParameterSpace_n_combinations, METH_O, " nb of combinations, = product of values sizes"},
+	 { "ParameterSpace_combination_ge", _wrap_ParameterSpace_combination_ge, METH_VARARGS, " returns whether combinations c1 >= c2 in the tuple sense"},
+	 { "ParameterSpace_combination_name", _wrap_ParameterSpace_combination_name, METH_VARARGS, " get string representation of the combination"},
+	 { "ParameterSpace_display", _wrap_ParameterSpace_display, METH_O, " print a description on stdout"},
+	 { "ParameterSpace_add_range", _wrap_ParameterSpace_add_range, METH_VARARGS, " add a new parameter (or return it if it exists)"},
+	 { "ParameterSpace_initialize", _wrap_ParameterSpace_initialize, METH_VARARGS, " initialize with reasonable parameters for the index"},
+	 { "ParameterSpace_set_index_parameters", _wrap_ParameterSpace_set_index_parameters, METH_VARARGS, "\n"
+		"*Overload 1:*\n"
+		"set a combination of parameters on an index\n"
+		"\n"
+		"|\n"
+		"\n"
+		"*Overload 2:*\n"
+		"set a combination of parameters described by a string\n"
+		""},
+	 { "ParameterSpace_set_index_parameter", _wrap_ParameterSpace_set_index_parameter, METH_VARARGS, " set one of the parameters, returns whether setting was successful"},
+	 { "ParameterSpace_update_bounds", _wrap_ParameterSpace_update_bounds, METH_VARARGS, "\n"
+		" find an upper bound on the performance and a lower bound on t\n"
+		"for configuration cno given another operating point op\n"
+		""},
+	 { "ParameterSpace_explore", _wrap_ParameterSpace_explore, METH_VARARGS, "\n"
+		" explore operating points\n"
+		":type index: :py:class:`Index`\n"
+		":param index:   index to run on\n"
+		":type xq: float\n"
+		":param xq:      query vectors (size nq * index.d)\n"
+		":type crit: :py:class:`AutoTuneCriterion`\n"
+		":param crit:    selection criterion\n"
+		":type ops: :py:class:`OperatingPoints`\n"
+		":param ops:     resulting operating points\n"
+		""},
+	 { "delete_ParameterSpace", _wrap_delete_ParameterSpace, METH_O, NULL},
+	 { "ParameterSpace_swigregister", ParameterSpace_swigregister, METH_O, NULL},
+	 { "ParameterSpace_swiginit", ParameterSpace_swiginit, METH_VARARGS, NULL},
+	 { "index_factory", _wrap_index_factory, METH_VARARGS, "\n"
+		"Build and index with the sequence of processing steps described in\n"
+		"the string.\n"
+		""},
+	 { "index_binary_factory", _wrap_index_binary_factory, METH_VARARGS, NULL},
+	 { "new_MatrixStats", _wrap_new_MatrixStats, METH_VARARGS, NULL},
+	 { "MatrixStats_comments_set", _wrap_MatrixStats_comments_set, METH_VARARGS, NULL},
+	 { "MatrixStats_comments_get", _wrap_MatrixStats_comments_get, METH_O, NULL},
+	 { "MatrixStats_n_set", _wrap_MatrixStats_n_set, METH_VARARGS, NULL},
+	 { "MatrixStats_n_get", _wrap_MatrixStats_n_get, METH_O, NULL},
+	 { "MatrixStats_d_set", _wrap_MatrixStats_d_set, METH_VARARGS, NULL},
+	 { "MatrixStats_d_get", _wrap_MatrixStats_d_get, METH_O, NULL},
+	 { "MatrixStats_n_collision_set", _wrap_MatrixStats_n_collision_set, METH_VARARGS, NULL},
+	 { "MatrixStats_n_collision_get", _wrap_MatrixStats_n_collision_get, METH_O, NULL},
+	 { "MatrixStats_n_valid_set", _wrap_MatrixStats_n_valid_set, METH_VARARGS, NULL},
+	 { "MatrixStats_n_valid_get", _wrap_MatrixStats_n_valid_get, METH_O, NULL},
+	 { "MatrixStats_n0_set", _wrap_MatrixStats_n0_set, METH_VARARGS, NULL},
+	 { "MatrixStats_n0_get", _wrap_MatrixStats_n0_get, METH_O, NULL},
+	 { "MatrixStats_min_norm2_set", _wrap_MatrixStats_min_norm2_set, METH_VARARGS, NULL},
+	 { "MatrixStats_min_norm2_get", _wrap_MatrixStats_min_norm2_get, METH_O, NULL},
+	 { "MatrixStats_max_norm2_set", _wrap_MatrixStats_max_norm2_set, METH_VARARGS, NULL},
+	 { "MatrixStats_max_norm2_get", _wrap_MatrixStats_max_norm2_get, METH_O, NULL},
+	 { "MatrixStats_per_dim_stats_set", _wrap_MatrixStats_per_dim_stats_set, METH_VARARGS, NULL},
+	 { "MatrixStats_per_dim_stats_get", _wrap_MatrixStats_per_dim_stats_get, METH_O, NULL},
+	 { "MatrixStats_occurrences_set", _wrap_MatrixStats_occurrences_set, METH_VARARGS, NULL},
+	 { "MatrixStats_occurrences_get", _wrap_MatrixStats_occurrences_get, METH_O, NULL},
+	 { "MatrixStats_buf_set", _wrap_MatrixStats_buf_set, METH_VARARGS, NULL},
+	 { "MatrixStats_buf_get", _wrap_MatrixStats_buf_get, METH_O, NULL},
+	 { "MatrixStats_nbuf_set", _wrap_MatrixStats_nbuf_set, METH_VARARGS, NULL},
+	 { "MatrixStats_nbuf_get", _wrap_MatrixStats_nbuf_get, METH_O, NULL},
+	 { "MatrixStats_do_comment", _wrap_MatrixStats_do_comment, METH_VARARGS, NULL},
+	 { "delete_MatrixStats", _wrap_delete_MatrixStats, METH_O, NULL},
+	 { "MatrixStats_swigregister", MatrixStats_swigregister, METH_O, NULL},
+	 { "MatrixStats_swiginit", MatrixStats_swiginit, METH_VARARGS, NULL},
+	 { "GpuParameterSpace_initialize", _wrap_GpuParameterSpace_initialize, METH_VARARGS, " initialize with reasonable parameters for the index"},
+	 { "GpuParameterSpace_set_index_parameter", _wrap_GpuParameterSpace_set_index_parameter, METH_VARARGS, " set a combination of parameters on an index"},
+	 { "new_GpuParameterSpace", _wrap_new_GpuParameterSpace, METH_NOARGS, NULL},
+	 { "delete_GpuParameterSpace", _wrap_delete_GpuParameterSpace, METH_O, NULL},
+	 { "GpuParameterSpace_swigregister", GpuParameterSpace_swigregister, METH_O, NULL},
+	 { "GpuParameterSpace_swiginit", GpuParameterSpace_swiginit, METH_VARARGS, NULL},
+	 { "ToCPUCloner_merge_index", _wrap_ToCPUCloner_merge_index, METH_VARARGS, NULL},
+	 { "ToCPUCloner_clone_Index", _wrap_ToCPUCloner_clone_Index, METH_VARARGS, NULL},
+	 { "new_ToCPUCloner", _wrap_new_ToCPUCloner, METH_NOARGS, NULL},
+	 { "delete_ToCPUCloner", _wrap_delete_ToCPUCloner, METH_O, NULL},
+	 { "ToCPUCloner_swigregister", ToCPUCloner_swigregister, METH_O, NULL},
+	 { "ToCPUCloner_swiginit", ToCPUCloner_swiginit, METH_VARARGS, NULL},
+	 { "ToGpuCloner_provider_set", _wrap_ToGpuCloner_provider_set, METH_VARARGS, NULL},
+	 { "ToGpuCloner_provider_get", _wrap_ToGpuCloner_provider_get, METH_O, NULL},
+	 { "ToGpuCloner_device_set", _wrap_ToGpuCloner_device_set, METH_VARARGS, NULL},
+	 { "ToGpuCloner_device_get", _wrap_ToGpuCloner_device_get, METH_O, NULL},
+	 { "new_ToGpuCloner", _wrap_new_ToGpuCloner, METH_VARARGS, NULL},
+	 { "ToGpuCloner_clone_Index", _wrap_ToGpuCloner_clone_Index, METH_VARARGS, NULL},
+	 { "delete_ToGpuCloner", _wrap_delete_ToGpuCloner, METH_O, NULL},
+	 { "ToGpuCloner_swigregister", ToGpuCloner_swigregister, METH_O, NULL},
+	 { "ToGpuCloner_swiginit", ToGpuCloner_swiginit, METH_VARARGS, NULL},
+	 { "ToGpuClonerMultiple_sub_cloners_set", _wrap_ToGpuClonerMultiple_sub_cloners_set, METH_VARARGS, NULL},
+	 { "ToGpuClonerMultiple_sub_cloners_get", _wrap_ToGpuClonerMultiple_sub_cloners_get, METH_O, NULL},
+	 { "new_ToGpuClonerMultiple", _wrap_new_ToGpuClonerMultiple, METH_VARARGS, NULL},
+	 { "ToGpuClonerMultiple_copy_ivf_shard", _wrap_ToGpuClonerMultiple_copy_ivf_shard, METH_VARARGS, NULL},
+	 { "ToGpuClonerMultiple_clone_Index_to_shards", _wrap_ToGpuClonerMultiple_clone_Index_to_shards, METH_VARARGS, NULL},
+	 { "ToGpuClonerMultiple_clone_Index", _wrap_ToGpuClonerMultiple_clone_Index, METH_VARARGS, " main function"},
+	 { "delete_ToGpuClonerMultiple", _wrap_delete_ToGpuClonerMultiple, METH_O, NULL},
+	 { "ToGpuClonerMultiple_swigregister", ToGpuClonerMultiple_swigregister, METH_O, NULL},
+	 { "ToGpuClonerMultiple_swiginit", ToGpuClonerMultiple_swiginit, METH_VARARGS, NULL},
+	 { "index_gpu_to_cpu", _wrap_index_gpu_to_cpu, METH_O, " converts any GPU index inside gpu_index to a CPU index"},
+	 { "index_cpu_to_gpu", _wrap_index_cpu_to_gpu, METH_VARARGS, " converts any CPU index that can be converted to GPU"},
+	 { "index_cpu_to_gpu_multiple", _wrap_index_cpu_to_gpu_multiple, METH_VARARGS, NULL},
+	 { "GpuProgressiveDimIndexFactory_options_set", _wrap_GpuProgressiveDimIndexFactory_options_set, METH_VARARGS, NULL},
+	 { "GpuProgressiveDimIndexFactory_options_get", _wrap_GpuProgressiveDimIndexFactory_options_get, METH_O, NULL},
+	 { "GpuProgressiveDimIndexFactory_vres_set", _wrap_GpuProgressiveDimIndexFactory_vres_set, METH_VARARGS, NULL},
+	 { "GpuProgressiveDimIndexFactory_vres_get", _wrap_GpuProgressiveDimIndexFactory_vres_get, METH_O, NULL},
+	 { "GpuProgressiveDimIndexFactory_devices_set", _wrap_GpuProgressiveDimIndexFactory_devices_set, METH_VARARGS, NULL},
+	 { "GpuProgressiveDimIndexFactory_devices_get", _wrap_GpuProgressiveDimIndexFactory_devices_get, METH_O, NULL},
+	 { "GpuProgressiveDimIndexFactory_ncall_set", _wrap_GpuProgressiveDimIndexFactory_ncall_set, METH_VARARGS, NULL},
+	 { "GpuProgressiveDimIndexFactory_ncall_get", _wrap_GpuProgressiveDimIndexFactory_ncall_get, METH_O, NULL},
+	 { "new_GpuProgressiveDimIndexFactory", _wrap_new_GpuProgressiveDimIndexFactory, METH_O, NULL},
+	 { "GpuProgressiveDimIndexFactory___call__", _wrap_GpuProgressiveDimIndexFactory___call__, METH_VARARGS, NULL},
+	 { "delete_GpuProgressiveDimIndexFactory", _wrap_delete_GpuProgressiveDimIndexFactory, METH_O, NULL},
+	 { "GpuProgressiveDimIndexFactory_swigregister", GpuProgressiveDimIndexFactory_swigregister, METH_O, NULL},
+	 { "GpuProgressiveDimIndexFactory_swiginit", GpuProgressiveDimIndexFactory_swiginit, METH_VARARGS, NULL},
+	 { "PyCallbackIOWriter_callback_set", _wrap_PyCallbackIOWriter_callback_set, METH_VARARGS, NULL},
+	 { "PyCallbackIOWriter_callback_get", _wrap_PyCallbackIOWriter_callback_get, METH_O, NULL},
+	 { "PyCallbackIOWriter_bs_set", _wrap_PyCallbackIOWriter_bs_set, METH_VARARGS, NULL},
+	 { "PyCallbackIOWriter_bs_get", _wrap_PyCallbackIOWriter_bs_get, METH_O, NULL},
+	 { "new_PyCallbackIOWriter", _wrap_new_PyCallbackIOWriter, METH_VARARGS, "\n"
+		"Callback: Python function that takes a bytes object and\n"
+		"returns the number of bytes successfully written.\n"
+		""},
+	 { "PyCallbackIOWriter___call__", _wrap_PyCallbackIOWriter___call__, METH_VARARGS, NULL},
+	 { "delete_PyCallbackIOWriter", _wrap_delete_PyCallbackIOWriter, METH_O, NULL},
+	 { "PyCallbackIOWriter_swigregister", PyCallbackIOWriter_swigregister, METH_O, NULL},
+	 { "PyCallbackIOWriter_swiginit", PyCallbackIOWriter_swiginit, METH_VARARGS, NULL},
+	 { "PyCallbackIOReader_callback_set", _wrap_PyCallbackIOReader_callback_set, METH_VARARGS, NULL},
+	 { "PyCallbackIOReader_callback_get", _wrap_PyCallbackIOReader_callback_get, METH_O, NULL},
+	 { "PyCallbackIOReader_bs_set", _wrap_PyCallbackIOReader_bs_set, METH_VARARGS, NULL},
+	 { "PyCallbackIOReader_bs_get", _wrap_PyCallbackIOReader_bs_get, METH_O, NULL},
+	 { "new_PyCallbackIOReader", _wrap_new_PyCallbackIOReader, METH_VARARGS, "\n"
+		" Callback: Python function that takes a size and returns a\n"
+		"bytes object with the resulting read\n"
+		""},
+	 { "PyCallbackIOReader___call__", _wrap_PyCallbackIOReader___call__, METH_VARARGS, NULL},
+	 { "delete_PyCallbackIOReader", _wrap_delete_PyCallbackIOReader, METH_O, NULL},
+	 { "PyCallbackIOReader_swigregister", PyCallbackIOReader_swigregister, METH_O, NULL},
+	 { "PyCallbackIOReader_swiginit", PyCallbackIOReader_swiginit, METH_VARARGS, NULL},
+	 { "swig_ptr", _wrap_swig_ptr, METH_O, NULL},
+	 { "rev_swig_ptr", _wrap_rev_swig_ptr, METH_VARARGS, NULL},
+	 { "float_minheap_array_t_nh_set", _wrap_float_minheap_array_t_nh_set, METH_VARARGS, " number of heaps"},
+	 { "float_minheap_array_t_nh_get", _wrap_float_minheap_array_t_nh_get, METH_O, " number of heaps"},
+	 { "float_minheap_array_t_k_set", _wrap_float_minheap_array_t_k_set, METH_VARARGS, " allocated size per heap"},
+	 { "float_minheap_array_t_k_get", _wrap_float_minheap_array_t_k_get, METH_O, " allocated size per heap"},
+	 { "float_minheap_array_t_ids_set", _wrap_float_minheap_array_t_ids_set, METH_VARARGS, " identifiers (size nh * k)"},
+	 { "float_minheap_array_t_ids_get", _wrap_float_minheap_array_t_ids_get, METH_O, " identifiers (size nh * k)"},
+	 { "float_minheap_array_t_val_set", _wrap_float_minheap_array_t_val_set, METH_VARARGS, " values (distances or similarities), size nh * k"},
+	 { "float_minheap_array_t_val_get", _wrap_float_minheap_array_t_val_get, METH_O, " values (distances or similarities), size nh * k"},
+	 { "float_minheap_array_t_get_val", _wrap_float_minheap_array_t_get_val, METH_VARARGS, " Return the list of values for a heap"},
+	 { "float_minheap_array_t_get_ids", _wrap_float_minheap_array_t_get_ids, METH_VARARGS, " Correspponding identifiers"},
+	 { "float_minheap_array_t_heapify", _wrap_float_minheap_array_t_heapify, METH_O, " prepare all the heaps before adding"},
+	 { "float_minheap_array_t_addn", _wrap_float_minheap_array_t_addn, METH_VARARGS, "\n"
+		" add nj elements to heaps i0:i0+ni, with sequential ids\n"
+		"\n"
+		":type nj: int\n"
+		":param nj:    nb of elements to add to each heap\n"
+		":type vin: float\n"
+		":param vin:   elements to add, size ni * nj\n"
+		":type j0: int, optional\n"
+		":param j0:    add this to the ids that are added\n"
+		":type i0: int, optional\n"
+		":param i0:    first heap to update\n"
+		":type ni: int, optional\n"
+		":param ni:    nb of elements to update (-1 = use nh)\n"
+		""},
+	 { "float_minheap_array_t_addn_with_ids", _wrap_float_minheap_array_t_addn_with_ids, METH_VARARGS, "\n"
+		" same as addn\n"
+		"\n"
+		":type id_in: int, optional\n"
+		":param id_in:     ids of the elements to add, size ni * nj\n"
+		":type id_stride: int, optional\n"
+		":param id_stride: stride for id_in\n"
+		""},
+	 { "float_minheap_array_t_reorder", _wrap_float_minheap_array_t_reorder, METH_O, " reorder all the heaps"},
+	 { "float_minheap_array_t_per_line_extrema", _wrap_float_minheap_array_t_per_line_extrema, METH_VARARGS, "\n"
+		" this is not really a heap function. It just finds the per-line\n"
+		"  extrema of each line of array D\n"
+		":type vals_out: float\n"
+		":param vals_out:    extreme value of each line (size nh, or NULL)\n"
+		":type idx_out: int\n"
+		":param idx_out:     index of extreme value (size nh or NULL)\n"
+		""},
+	 { "new_float_minheap_array_t", _wrap_new_float_minheap_array_t, METH_NOARGS, NULL},
+	 { "delete_float_minheap_array_t", _wrap_delete_float_minheap_array_t, METH_O, NULL},
+	 { "float_minheap_array_t_swigregister", float_minheap_array_t_swigregister, METH_O, NULL},
+	 { "float_minheap_array_t_swiginit", float_minheap_array_t_swiginit, METH_VARARGS, NULL},
+	 { "int_minheap_array_t_nh_set", _wrap_int_minheap_array_t_nh_set, METH_VARARGS, " number of heaps"},
+	 { "int_minheap_array_t_nh_get", _wrap_int_minheap_array_t_nh_get, METH_O, " number of heaps"},
+	 { "int_minheap_array_t_k_set", _wrap_int_minheap_array_t_k_set, METH_VARARGS, " allocated size per heap"},
+	 { "int_minheap_array_t_k_get", _wrap_int_minheap_array_t_k_get, METH_O, " allocated size per heap"},
+	 { "int_minheap_array_t_ids_set", _wrap_int_minheap_array_t_ids_set, METH_VARARGS, " identifiers (size nh * k)"},
+	 { "int_minheap_array_t_ids_get", _wrap_int_minheap_array_t_ids_get, METH_O, " identifiers (size nh * k)"},
+	 { "int_minheap_array_t_val_set", _wrap_int_minheap_array_t_val_set, METH_VARARGS, " values (distances or similarities), size nh * k"},
+	 { "int_minheap_array_t_val_get", _wrap_int_minheap_array_t_val_get, METH_O, " values (distances or similarities), size nh * k"},
+	 { "int_minheap_array_t_get_val", _wrap_int_minheap_array_t_get_val, METH_VARARGS, " Return the list of values for a heap"},
+	 { "int_minheap_array_t_get_ids", _wrap_int_minheap_array_t_get_ids, METH_VARARGS, " Correspponding identifiers"},
+	 { "int_minheap_array_t_heapify", _wrap_int_minheap_array_t_heapify, METH_O, " prepare all the heaps before adding"},
+	 { "int_minheap_array_t_addn", _wrap_int_minheap_array_t_addn, METH_VARARGS, "\n"
+		" add nj elements to heaps i0:i0+ni, with sequential ids\n"
+		"\n"
+		":type nj: int\n"
+		":param nj:    nb of elements to add to each heap\n"
+		":type vin: int\n"
+		":param vin:   elements to add, size ni * nj\n"
+		":type j0: int, optional\n"
+		":param j0:    add this to the ids that are added\n"
+		":type i0: int, optional\n"
+		":param i0:    first heap to update\n"
+		":type ni: int, optional\n"
+		":param ni:    nb of elements to update (-1 = use nh)\n"
+		""},
+	 { "int_minheap_array_t_addn_with_ids", _wrap_int_minheap_array_t_addn_with_ids, METH_VARARGS, "\n"
+		" same as addn\n"
+		"\n"
+		":type id_in: int, optional\n"
+		":param id_in:     ids of the elements to add, size ni * nj\n"
+		":type id_stride: int, optional\n"
+		":param id_stride: stride for id_in\n"
+		""},
+	 { "int_minheap_array_t_reorder", _wrap_int_minheap_array_t_reorder, METH_O, " reorder all the heaps"},
+	 { "int_minheap_array_t_per_line_extrema", _wrap_int_minheap_array_t_per_line_extrema, METH_VARARGS, "\n"
+		" this is not really a heap function. It just finds the per-line\n"
+		"  extrema of each line of array D\n"
+		":type vals_out: int\n"
+		":param vals_out:    extreme value of each line (size nh, or NULL)\n"
+		":type idx_out: int\n"
+		":param idx_out:     index of extreme value (size nh or NULL)\n"
+		""},
+	 { "new_int_minheap_array_t", _wrap_new_int_minheap_array_t, METH_NOARGS, NULL},
+	 { "delete_int_minheap_array_t", _wrap_delete_int_minheap_array_t, METH_O, NULL},
+	 { "int_minheap_array_t_swigregister", int_minheap_array_t_swigregister, METH_O, NULL},
+	 { "int_minheap_array_t_swiginit", int_minheap_array_t_swiginit, METH_VARARGS, NULL},
+	 { "float_maxheap_array_t_nh_set", _wrap_float_maxheap_array_t_nh_set, METH_VARARGS, " number of heaps"},
+	 { "float_maxheap_array_t_nh_get", _wrap_float_maxheap_array_t_nh_get, METH_O, " number of heaps"},
+	 { "float_maxheap_array_t_k_set", _wrap_float_maxheap_array_t_k_set, METH_VARARGS, " allocated size per heap"},
+	 { "float_maxheap_array_t_k_get", _wrap_float_maxheap_array_t_k_get, METH_O, " allocated size per heap"},
+	 { "float_maxheap_array_t_ids_set", _wrap_float_maxheap_array_t_ids_set, METH_VARARGS, " identifiers (size nh * k)"},
+	 { "float_maxheap_array_t_ids_get", _wrap_float_maxheap_array_t_ids_get, METH_O, " identifiers (size nh * k)"},
+	 { "float_maxheap_array_t_val_set", _wrap_float_maxheap_array_t_val_set, METH_VARARGS, " values (distances or similarities), size nh * k"},
+	 { "float_maxheap_array_t_val_get", _wrap_float_maxheap_array_t_val_get, METH_O, " values (distances or similarities), size nh * k"},
+	 { "float_maxheap_array_t_get_val", _wrap_float_maxheap_array_t_get_val, METH_VARARGS, " Return the list of values for a heap"},
+	 { "float_maxheap_array_t_get_ids", _wrap_float_maxheap_array_t_get_ids, METH_VARARGS, " Correspponding identifiers"},
+	 { "float_maxheap_array_t_heapify", _wrap_float_maxheap_array_t_heapify, METH_O, " prepare all the heaps before adding"},
+	 { "float_maxheap_array_t_addn", _wrap_float_maxheap_array_t_addn, METH_VARARGS, "\n"
+		" add nj elements to heaps i0:i0+ni, with sequential ids\n"
+		"\n"
+		":type nj: int\n"
+		":param nj:    nb of elements to add to each heap\n"
+		":type vin: float\n"
+		":param vin:   elements to add, size ni * nj\n"
+		":type j0: int, optional\n"
+		":param j0:    add this to the ids that are added\n"
+		":type i0: int, optional\n"
+		":param i0:    first heap to update\n"
+		":type ni: int, optional\n"
+		":param ni:    nb of elements to update (-1 = use nh)\n"
+		""},
+	 { "float_maxheap_array_t_addn_with_ids", _wrap_float_maxheap_array_t_addn_with_ids, METH_VARARGS, "\n"
+		" same as addn\n"
+		"\n"
+		":type id_in: int, optional\n"
+		":param id_in:     ids of the elements to add, size ni * nj\n"
+		":type id_stride: int, optional\n"
+		":param id_stride: stride for id_in\n"
+		""},
+	 { "float_maxheap_array_t_reorder", _wrap_float_maxheap_array_t_reorder, METH_O, " reorder all the heaps"},
+	 { "float_maxheap_array_t_per_line_extrema", _wrap_float_maxheap_array_t_per_line_extrema, METH_VARARGS, "\n"
+		" this is not really a heap function. It just finds the per-line\n"
+		"  extrema of each line of array D\n"
+		":type vals_out: float\n"
+		":param vals_out:    extreme value of each line (size nh, or NULL)\n"
+		":type idx_out: int\n"
+		":param idx_out:     index of extreme value (size nh or NULL)\n"
+		""},
+	 { "new_float_maxheap_array_t", _wrap_new_float_maxheap_array_t, METH_NOARGS, NULL},
+	 { "delete_float_maxheap_array_t", _wrap_delete_float_maxheap_array_t, METH_O, NULL},
+	 { "float_maxheap_array_t_swigregister", float_maxheap_array_t_swigregister, METH_O, NULL},
+	 { "float_maxheap_array_t_swiginit", float_maxheap_array_t_swiginit, METH_VARARGS, NULL},
+	 { "int_maxheap_array_t_nh_set", _wrap_int_maxheap_array_t_nh_set, METH_VARARGS, " number of heaps"},
+	 { "int_maxheap_array_t_nh_get", _wrap_int_maxheap_array_t_nh_get, METH_O, " number of heaps"},
+	 { "int_maxheap_array_t_k_set", _wrap_int_maxheap_array_t_k_set, METH_VARARGS, " allocated size per heap"},
+	 { "int_maxheap_array_t_k_get", _wrap_int_maxheap_array_t_k_get, METH_O, " allocated size per heap"},
+	 { "int_maxheap_array_t_ids_set", _wrap_int_maxheap_array_t_ids_set, METH_VARARGS, " identifiers (size nh * k)"},
+	 { "int_maxheap_array_t_ids_get", _wrap_int_maxheap_array_t_ids_get, METH_O, " identifiers (size nh * k)"},
+	 { "int_maxheap_array_t_val_set", _wrap_int_maxheap_array_t_val_set, METH_VARARGS, " values (distances or similarities), size nh * k"},
+	 { "int_maxheap_array_t_val_get", _wrap_int_maxheap_array_t_val_get, METH_O, " values (distances or similarities), size nh * k"},
+	 { "int_maxheap_array_t_get_val", _wrap_int_maxheap_array_t_get_val, METH_VARARGS, " Return the list of values for a heap"},
+	 { "int_maxheap_array_t_get_ids", _wrap_int_maxheap_array_t_get_ids, METH_VARARGS, " Correspponding identifiers"},
+	 { "int_maxheap_array_t_heapify", _wrap_int_maxheap_array_t_heapify, METH_O, " prepare all the heaps before adding"},
+	 { "int_maxheap_array_t_addn", _wrap_int_maxheap_array_t_addn, METH_VARARGS, "\n"
+		" add nj elements to heaps i0:i0+ni, with sequential ids\n"
+		"\n"
+		":type nj: int\n"
+		":param nj:    nb of elements to add to each heap\n"
+		":type vin: int\n"
+		":param vin:   elements to add, size ni * nj\n"
+		":type j0: int, optional\n"
+		":param j0:    add this to the ids that are added\n"
+		":type i0: int, optional\n"
+		":param i0:    first heap to update\n"
+		":type ni: int, optional\n"
+		":param ni:    nb of elements to update (-1 = use nh)\n"
+		""},
+	 { "int_maxheap_array_t_addn_with_ids", _wrap_int_maxheap_array_t_addn_with_ids, METH_VARARGS, "\n"
+		" same as addn\n"
+		"\n"
+		":type id_in: int, optional\n"
+		":param id_in:     ids of the elements to add, size ni * nj\n"
+		":type id_stride: int, optional\n"
+		":param id_stride: stride for id_in\n"
+		""},
+	 { "int_maxheap_array_t_reorder", _wrap_int_maxheap_array_t_reorder, METH_O, " reorder all the heaps"},
+	 { "int_maxheap_array_t_per_line_extrema", _wrap_int_maxheap_array_t_per_line_extrema, METH_VARARGS, "\n"
+		" this is not really a heap function. It just finds the per-line\n"
+		"  extrema of each line of array D\n"
+		":type vals_out: int\n"
+		":param vals_out:    extreme value of each line (size nh, or NULL)\n"
+		":type idx_out: int\n"
+		":param idx_out:     index of extreme value (size nh or NULL)\n"
+		""},
+	 { "new_int_maxheap_array_t", _wrap_new_int_maxheap_array_t, METH_NOARGS, NULL},
+	 { "delete_int_maxheap_array_t", _wrap_delete_int_maxheap_array_t, METH_O, NULL},
+	 { "int_maxheap_array_t_swigregister", int_maxheap_array_t_swigregister, METH_O, NULL},
+	 { "int_maxheap_array_t_swiginit", int_maxheap_array_t_swiginit, METH_VARARGS, NULL},
+	 { "CMin_float_partition_fuzzy", _wrap_CMin_float_partition_fuzzy, METH_VARARGS, "\n"
+		" partitions the table into 0:q and q:n where all elements above q are >= all\n"
+		"elements below q (for C = CMax, for CMin comparisons are reversed)\n"
+		"\n"
+		"Returns the partition threshold. The elements q:n are destroyed on output.\n"
+		""},
+	 { "CMax_float_partition_fuzzy", _wrap_CMax_float_partition_fuzzy, METH_VARARGS, "\n"
+		" partitions the table into 0:q and q:n where all elements above q are >= all\n"
+		"elements below q (for C = CMax, for CMin comparisons are reversed)\n"
+		"\n"
+		"Returns the partition threshold. The elements q:n are destroyed on output.\n"
+		""},
+	 { "AlignedTableUint8_tab_set", _wrap_AlignedTableUint8_tab_set, METH_VARARGS, NULL},
+	 { "AlignedTableUint8_tab_get", _wrap_AlignedTableUint8_tab_get, METH_O, NULL},
+	 { "AlignedTableUint8_numel_set", _wrap_AlignedTableUint8_numel_set, METH_VARARGS, NULL},
+	 { "AlignedTableUint8_numel_get", _wrap_AlignedTableUint8_numel_get, METH_O, NULL},
+	 { "AlignedTableUint8_round_capacity", _wrap_AlignedTableUint8_round_capacity, METH_O, NULL},
+	 { "new_AlignedTableUint8", _wrap_new_AlignedTableUint8, METH_VARARGS, NULL},
+	 { "AlignedTableUint8_itemsize", _wrap_AlignedTableUint8_itemsize, METH_O, NULL},
+	 { "AlignedTableUint8_resize", _wrap_AlignedTableUint8_resize, METH_VARARGS, NULL},
+	 { "AlignedTableUint8_clear", _wrap_AlignedTableUint8_clear, METH_O, NULL},
+	 { "AlignedTableUint8_size", _wrap_AlignedTableUint8_size, METH_O, NULL},
+	 { "AlignedTableUint8_nbytes", _wrap_AlignedTableUint8_nbytes, METH_O, NULL},
+	 { "AlignedTableUint8_get", _wrap_AlignedTableUint8_get, METH_VARARGS, NULL},
+	 { "AlignedTableUint8_data", _wrap_AlignedTableUint8_data, METH_VARARGS, NULL},
+	 { "delete_AlignedTableUint8", _wrap_delete_AlignedTableUint8, METH_O, NULL},
+	 { "AlignedTableUint8_swigregister", AlignedTableUint8_swigregister, METH_O, NULL},
+	 { "AlignedTableUint8_swiginit", AlignedTableUint8_swiginit, METH_VARARGS, NULL},
+	 { "AlignedTableUint16_tab_set", _wrap_AlignedTableUint16_tab_set, METH_VARARGS, NULL},
+	 { "AlignedTableUint16_tab_get", _wrap_AlignedTableUint16_tab_get, METH_O, NULL},
+	 { "AlignedTableUint16_numel_set", _wrap_AlignedTableUint16_numel_set, METH_VARARGS, NULL},
+	 { "AlignedTableUint16_numel_get", _wrap_AlignedTableUint16_numel_get, METH_O, NULL},
+	 { "AlignedTableUint16_round_capacity", _wrap_AlignedTableUint16_round_capacity, METH_O, NULL},
+	 { "new_AlignedTableUint16", _wrap_new_AlignedTableUint16, METH_VARARGS, NULL},
+	 { "AlignedTableUint16_itemsize", _wrap_AlignedTableUint16_itemsize, METH_O, NULL},
+	 { "AlignedTableUint16_resize", _wrap_AlignedTableUint16_resize, METH_VARARGS, NULL},
+	 { "AlignedTableUint16_clear", _wrap_AlignedTableUint16_clear, METH_O, NULL},
+	 { "AlignedTableUint16_size", _wrap_AlignedTableUint16_size, METH_O, NULL},
+	 { "AlignedTableUint16_nbytes", _wrap_AlignedTableUint16_nbytes, METH_O, NULL},
+	 { "AlignedTableUint16_get", _wrap_AlignedTableUint16_get, METH_VARARGS, NULL},
+	 { "AlignedTableUint16_data", _wrap_AlignedTableUint16_data, METH_VARARGS, NULL},
+	 { "delete_AlignedTableUint16", _wrap_delete_AlignedTableUint16, METH_O, NULL},
+	 { "AlignedTableUint16_swigregister", AlignedTableUint16_swigregister, METH_O, NULL},
+	 { "AlignedTableUint16_swiginit", AlignedTableUint16_swiginit, METH_VARARGS, NULL},
+	 { "AlignedTableFloat32_tab_set", _wrap_AlignedTableFloat32_tab_set, METH_VARARGS, NULL},
+	 { "AlignedTableFloat32_tab_get", _wrap_AlignedTableFloat32_tab_get, METH_O, NULL},
+	 { "AlignedTableFloat32_numel_set", _wrap_AlignedTableFloat32_numel_set, METH_VARARGS, NULL},
+	 { "AlignedTableFloat32_numel_get", _wrap_AlignedTableFloat32_numel_get, METH_O, NULL},
+	 { "AlignedTableFloat32_round_capacity", _wrap_AlignedTableFloat32_round_capacity, METH_O, NULL},
+	 { "new_AlignedTableFloat32", _wrap_new_AlignedTableFloat32, METH_VARARGS, NULL},
+	 { "AlignedTableFloat32_itemsize", _wrap_AlignedTableFloat32_itemsize, METH_O, NULL},
+	 { "AlignedTableFloat32_resize", _wrap_AlignedTableFloat32_resize, METH_VARARGS, NULL},
+	 { "AlignedTableFloat32_clear", _wrap_AlignedTableFloat32_clear, METH_O, NULL},
+	 { "AlignedTableFloat32_size", _wrap_AlignedTableFloat32_size, METH_O, NULL},
+	 { "AlignedTableFloat32_nbytes", _wrap_AlignedTableFloat32_nbytes, METH_O, NULL},
+	 { "AlignedTableFloat32_get", _wrap_AlignedTableFloat32_get, METH_VARARGS, NULL},
+	 { "AlignedTableFloat32_data", _wrap_AlignedTableFloat32_data, METH_VARARGS, NULL},
+	 { "delete_AlignedTableFloat32", _wrap_delete_AlignedTableFloat32, METH_O, NULL},
+	 { "AlignedTableFloat32_swigregister", AlignedTableFloat32_swigregister, METH_O, NULL},
+	 { "AlignedTableFloat32_swiginit", AlignedTableFloat32_swiginit, METH_VARARGS, NULL},
+	 { "CMax_uint16_partition_fuzzy", _wrap_CMax_uint16_partition_fuzzy, METH_VARARGS, NULL},
+	 { "CMin_uint16_partition_fuzzy", _wrap_CMin_uint16_partition_fuzzy, METH_VARARGS, NULL},
+	 { "omp_set_num_threads", _wrap_omp_set_num_threads, METH_O, NULL},
+	 { "omp_get_max_threads", _wrap_omp_get_max_threads, METH_NOARGS, NULL},
+	 { "memcpy", _wrap_memcpy, METH_VARARGS, NULL},
+	 { "cast_integer_to_uint8_ptr", _wrap_cast_integer_to_uint8_ptr, METH_O, NULL},
+	 { "cast_integer_to_float_ptr", _wrap_cast_integer_to_float_ptr, METH_O, NULL},
+	 { "cast_integer_to_idx_t_ptr", _wrap_cast_integer_to_idx_t_ptr, METH_O, NULL},
+	 { "cast_integer_to_int_ptr", _wrap_cast_integer_to_int_ptr, METH_O, NULL},
+	 { "cast_integer_to_void_ptr", _wrap_cast_integer_to_void_ptr, METH_O, NULL},
+	 { "MapLong2Long_map_set", _wrap_MapLong2Long_map_set, METH_VARARGS, NULL},
+	 { "MapLong2Long_map_get", _wrap_MapLong2Long_map_get, METH_O, NULL},
+	 { "MapLong2Long_add", _wrap_MapLong2Long_add, METH_VARARGS, NULL},
+	 { "MapLong2Long_search", _wrap_MapLong2Long_search, METH_VARARGS, NULL},
+	 { "MapLong2Long_search_multiple", _wrap_MapLong2Long_search_multiple, METH_VARARGS, NULL},
+	 { "new_MapLong2Long", _wrap_new_MapLong2Long, METH_NOARGS, NULL},
+	 { "delete_MapLong2Long", _wrap_delete_MapLong2Long, METH_O, NULL},
+	 { "MapLong2Long_swigregister", MapLong2Long_swigregister, METH_O, NULL},
+	 { "MapLong2Long_swiginit", MapLong2Long_swiginit, METH_VARARGS, NULL},
+	 { "wait", _wrap_wait, METH_NOARGS, NULL},
+	 { NULL, NULL, 0, NULL }
+};
+
+static PyMethodDef SwigMethods_proxydocs[] = {
+	 { NULL, NULL, 0, NULL }
+};
+
+
+/* -------- TYPE CONVERSION AND EQUIVALENCE RULES (BEGIN) -------- */
+
+static void *_p_faiss__RandomRotationMatrixTo_p_faiss__LinearTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::LinearTransform *)  ((faiss::RandomRotationMatrix *) x));
+}
+static void *_p_faiss__PCAMatrixTo_p_faiss__LinearTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::LinearTransform *)  ((faiss::PCAMatrix *) x));
+}
+static void *_p_faiss__ITQMatrixTo_p_faiss__LinearTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::LinearTransform *)  ((faiss::ITQMatrix *) x));
+}
+static void *_p_faiss__OPQMatrixTo_p_faiss__LinearTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::LinearTransform *)  ((faiss::OPQMatrix *) x));
+}
+static void *_p_faiss__RandomRotationMatrixTo_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform *) (faiss::LinearTransform *) ((faiss::RandomRotationMatrix *) x));
+}
+static void *_p_faiss__PCAMatrixTo_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform *) (faiss::LinearTransform *) ((faiss::PCAMatrix *) x));
+}
+static void *_p_faiss__ITQMatrixTo_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform *) (faiss::LinearTransform *) ((faiss::ITQMatrix *) x));
+}
+static void *_p_faiss__OPQMatrixTo_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform *) (faiss::LinearTransform *) ((faiss::OPQMatrix *) x));
+}
+static void *_p_faiss__LinearTransformTo_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform *)  ((faiss::LinearTransform *) x));
+}
+static void *_p_faiss__ITQTransformTo_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform *)  ((faiss::ITQTransform *) x));
+}
+static void *_p_faiss__RemapDimensionsTransformTo_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform *)  ((faiss::RemapDimensionsTransform *) x));
+}
+static void *_p_faiss__NormalizationTransformTo_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform *)  ((faiss::NormalizationTransform *) x));
+}
+static void *_p_faiss__CenteringTransformTo_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform *)  ((faiss::CenteringTransform *) x));
+}
+static void *_p_p_faiss__RandomRotationMatrixTo_p_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform **) (faiss::LinearTransform *) ((faiss::RandomRotationMatrix **) x));
+}
+static void *_p_p_faiss__PCAMatrixTo_p_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform **) (faiss::LinearTransform *) ((faiss::PCAMatrix **) x));
+}
+static void *_p_p_faiss__ITQMatrixTo_p_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform **) (faiss::LinearTransform *) ((faiss::ITQMatrix **) x));
+}
+static void *_p_p_faiss__OPQMatrixTo_p_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform **) (faiss::LinearTransform *) ((faiss::OPQMatrix **) x));
+}
+static void *_p_p_faiss__LinearTransformTo_p_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform **)  ((faiss::LinearTransform **) x));
+}
+static void *_p_p_faiss__ITQTransformTo_p_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform **)  ((faiss::ITQTransform **) x));
+}
+static void *_p_p_faiss__RemapDimensionsTransformTo_p_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform **)  ((faiss::RemapDimensionsTransform **) x));
+}
+static void *_p_p_faiss__NormalizationTransformTo_p_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform **)  ((faiss::NormalizationTransform **) x));
+}
+static void *_p_p_faiss__CenteringTransformTo_p_p_faiss__VectorTransform(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::VectorTransform **)  ((faiss::CenteringTransform **) x));
+}
+static void *_p_faiss__IndexRefineFlatTo_p_faiss__IndexRefine(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexRefine *)  ((faiss::IndexRefineFlat *) x));
+}
+static void *_p_faiss__IndexNSGFlatTo_p_faiss__IndexNSG(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexNSG *)  ((faiss::IndexNSGFlat *) x));
+}
+static void *_p_faiss__IndexFlat1DTo_p_faiss__IndexFlatL2(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlatL2 *)  ((faiss::IndexFlat1D *) x));
+}
+static void *_p_faiss__IndexIDMap2TemplateT_faiss__Index_tTo_p_faiss__IndexIDMapTemplateT_faiss__Index_t(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIDMapTemplate< faiss::Index > *)  ((faiss::IndexIDMap2Template< faiss::Index > *) x));
+}
+static void *_p_faiss__IndexShardsTemplateT_faiss__Index_tTo_p_faiss__ThreadedIndexT_faiss__Index_t(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ThreadedIndex< faiss::Index > *)  ((faiss::IndexShardsTemplate< faiss::Index > *) x));
+}
+static void *_p_faiss__IndexReplicasTemplateT_faiss__Index_tTo_p_faiss__ThreadedIndexT_faiss__Index_t(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ThreadedIndex< faiss::Index > *)  ((faiss::IndexReplicasTemplate< faiss::Index > *) x));
+}
+static void *_p_faiss__gpu__GpuIndexFlatTo_p_faiss__gpu__GpuIndex(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndex *)  ((faiss::gpu::GpuIndexFlat *) x));
+}
+static void *_p_faiss__gpu__GpuIndexFlatL2To_p_faiss__gpu__GpuIndex(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndex *) (faiss::gpu::GpuIndexFlat *) ((faiss::gpu::GpuIndexFlatL2 *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFTo_p_faiss__gpu__GpuIndex(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndex *)  ((faiss::gpu::GpuIndexIVF *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFPQTo_p_faiss__gpu__GpuIndex(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndex *) (faiss::gpu::GpuIndexIVF *) ((faiss::gpu::GpuIndexIVFPQ *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFScalarQuantizerTo_p_faiss__gpu__GpuIndex(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndex *) (faiss::gpu::GpuIndexIVF *) ((faiss::gpu::GpuIndexIVFScalarQuantizer *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFFlatTo_p_faiss__gpu__GpuIndex(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndex *) (faiss::gpu::GpuIndexIVF *) ((faiss::gpu::GpuIndexIVFFlat *) x));
+}
+static void *_p_faiss__gpu__GpuIndexFlatIPTo_p_faiss__gpu__GpuIndex(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndex *) (faiss::gpu::GpuIndexFlat *) ((faiss::gpu::GpuIndexFlatIP *) x));
+}
+static void *_p_faiss__ZnSphereCodecAltTo_p_faiss__ZnSphereCodec(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ZnSphereCodec *)  ((faiss::ZnSphereCodecAlt *) x));
+}
+static void *_p_faiss__ReproduceDistancesObjectiveTo_p_faiss__PermutationObjective(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::PermutationObjective *)  ((faiss::ReproduceDistancesObjective *) x));
+}
+static void *_p_faiss__gpu__GpuIcmEncoderTo_p_faiss__lsq__IcmEncoder(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::lsq::IcmEncoder *)  ((faiss::gpu::GpuIcmEncoder *) x));
+}
+static void *_p_faiss__ArrayInvertedListsTo_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists *)  ((faiss::ArrayInvertedLists *) x));
+}
+static void *_p_faiss__ReadOnlyInvertedListsTo_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists *)  ((faiss::ReadOnlyInvertedLists *) x));
+}
+static void *_p_faiss__HStackInvertedListsTo_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists *) (faiss::ReadOnlyInvertedLists *) ((faiss::HStackInvertedLists *) x));
+}
+static void *_p_faiss__SliceInvertedListsTo_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists *) (faiss::ReadOnlyInvertedLists *) ((faiss::SliceInvertedLists *) x));
+}
+static void *_p_faiss__VStackInvertedListsTo_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists *) (faiss::ReadOnlyInvertedLists *) ((faiss::VStackInvertedLists *) x));
+}
+static void *_p_faiss__MaskedInvertedListsTo_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists *) (faiss::ReadOnlyInvertedLists *) ((faiss::MaskedInvertedLists *) x));
+}
+static void *_p_faiss__StopWordsInvertedListsTo_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists *) (faiss::ReadOnlyInvertedLists *) ((faiss::StopWordsInvertedLists *) x));
+}
+static void *_p_faiss__BlockInvertedListsTo_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists *)  ((faiss::BlockInvertedLists *) x));
+}
+static void *_p_faiss__OnDiskInvertedListsTo_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists *)  ((faiss::OnDiskInvertedLists *) x));
+}
+static void *_p_faiss__HStackInvertedListsTo_p_faiss__ReadOnlyInvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ReadOnlyInvertedLists *)  ((faiss::HStackInvertedLists *) x));
+}
+static void *_p_faiss__SliceInvertedListsTo_p_faiss__ReadOnlyInvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ReadOnlyInvertedLists *)  ((faiss::SliceInvertedLists *) x));
+}
+static void *_p_faiss__VStackInvertedListsTo_p_faiss__ReadOnlyInvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ReadOnlyInvertedLists *)  ((faiss::VStackInvertedLists *) x));
+}
+static void *_p_faiss__MaskedInvertedListsTo_p_faiss__ReadOnlyInvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ReadOnlyInvertedLists *)  ((faiss::MaskedInvertedLists *) x));
+}
+static void *_p_faiss__StopWordsInvertedListsTo_p_faiss__ReadOnlyInvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ReadOnlyInvertedLists *)  ((faiss::StopWordsInvertedLists *) x));
+}
+static void *_p_p_faiss__ArrayInvertedListsTo_p_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists **)  ((faiss::ArrayInvertedLists **) x));
+}
+static void *_p_p_faiss__ReadOnlyInvertedListsTo_p_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists **)  ((faiss::ReadOnlyInvertedLists **) x));
+}
+static void *_p_p_faiss__HStackInvertedListsTo_p_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists **) (faiss::ReadOnlyInvertedLists *) ((faiss::HStackInvertedLists **) x));
+}
+static void *_p_p_faiss__SliceInvertedListsTo_p_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists **) (faiss::ReadOnlyInvertedLists *) ((faiss::SliceInvertedLists **) x));
+}
+static void *_p_p_faiss__VStackInvertedListsTo_p_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists **) (faiss::ReadOnlyInvertedLists *) ((faiss::VStackInvertedLists **) x));
+}
+static void *_p_p_faiss__MaskedInvertedListsTo_p_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists **) (faiss::ReadOnlyInvertedLists *) ((faiss::MaskedInvertedLists **) x));
+}
+static void *_p_p_faiss__StopWordsInvertedListsTo_p_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists **) (faiss::ReadOnlyInvertedLists *) ((faiss::StopWordsInvertedLists **) x));
+}
+static void *_p_p_faiss__BlockInvertedListsTo_p_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists **)  ((faiss::BlockInvertedLists **) x));
+}
+static void *_p_p_faiss__OnDiskInvertedListsTo_p_p_faiss__InvertedLists(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedLists **)  ((faiss::OnDiskInvertedLists **) x));
+}
+static void *_p_faiss__gpu__AllocRequestTo_p_faiss__gpu__AllocInfo(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::AllocInfo *)  ((faiss::gpu::AllocRequest *) x));
+}
+static void *_p_faiss__IndexHNSWFlatTo_p_faiss__IndexHNSW(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexHNSW *)  ((faiss::IndexHNSWFlat *) x));
+}
+static void *_p_faiss__IndexHNSWSQTo_p_faiss__IndexHNSW(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexHNSW *)  ((faiss::IndexHNSWSQ *) x));
+}
+static void *_p_faiss__IndexHNSWPQTo_p_faiss__IndexHNSW(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexHNSW *)  ((faiss::IndexHNSWPQ *) x));
+}
+static void *_p_faiss__IndexHNSW2LevelTo_p_faiss__IndexHNSW(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexHNSW *)  ((faiss::IndexHNSW2Level *) x));
+}
+static void *_p_faiss__gpu__StandardGpuResourcesImplTo_p_faiss__gpu__GpuResources(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuResources *)  ((faiss::gpu::StandardGpuResourcesImpl *) x));
+}
+static void *_p_faiss__gpu__ToGpuClonerMultipleTo_p_faiss__gpu__GpuMultipleClonerOptions(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuMultipleClonerOptions *)  ((faiss::gpu::ToGpuClonerMultiple *) x));
+}
+static void *_p_faiss__gpu__ToGpuClonerTo_p_faiss__gpu__GpuClonerOptions(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuClonerOptions *)  ((faiss::gpu::ToGpuCloner *) x));
+}
+static void *_p_faiss__gpu__GpuMultipleClonerOptionsTo_p_faiss__gpu__GpuClonerOptions(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuClonerOptions *)  ((faiss::gpu::GpuMultipleClonerOptions *) x));
+}
+static void *_p_faiss__gpu__ToGpuClonerMultipleTo_p_faiss__gpu__GpuClonerOptions(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuClonerOptions *) (faiss::gpu::GpuMultipleClonerOptions *) ((faiss::gpu::ToGpuClonerMultiple *) x));
+}
+static void *_p_faiss__gpu__StandardGpuResourcesTo_p_faiss__gpu__GpuResourcesProvider(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuResourcesProvider *)  ((faiss::gpu::StandardGpuResources *) x));
+}
+static void *_p_p_faiss__gpu__StandardGpuResourcesTo_p_p_faiss__gpu__GpuResourcesProvider(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuResourcesProvider **)  ((faiss::gpu::StandardGpuResources **) x));
+}
+static void *_p_faiss__gpu__ToCPUClonerTo_p_faiss__Cloner(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Cloner *)  ((faiss::gpu::ToCPUCloner *) x));
+}
+static void *_p_faiss__gpu__ToGpuClonerTo_p_faiss__Cloner(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Cloner *)  ((faiss::gpu::ToGpuCloner *) x));
+}
+static void *_p_faiss__gpu__ToGpuClonerMultipleTo_p_faiss__Cloner(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Cloner *)  ((faiss::gpu::ToGpuClonerMultiple *) x));
+}
+static void *_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_tTo_p_std__shared_ptrT_faiss__gpu__GpuResources_t(void *x, int *newmemory) {
+    *newmemory = SWIG_CAST_NEW_MEMORY;
+    return (void *) new std::shared_ptr< faiss::gpu::GpuResources >(*(std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *)x);
+}
+static void *_p_faiss__ZnSphereCodecTo_p_faiss__EnumeratedVectors(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::EnumeratedVectors *)  ((faiss::ZnSphereCodec *) x));
+}
+static void *_p_faiss__ZnSphereCodecRecTo_p_faiss__EnumeratedVectors(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::EnumeratedVectors *)  ((faiss::ZnSphereCodecRec *) x));
+}
+static void *_p_faiss__ZnSphereCodecAltTo_p_faiss__EnumeratedVectors(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::EnumeratedVectors *) (faiss::ZnSphereCodec *) ((faiss::ZnSphereCodecAlt *) x));
+}
+static void *_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_tTo_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIDMapTemplate< faiss::IndexBinary > *)  ((faiss::IndexIDMap2Template< faiss::IndexBinary > *) x));
+}
+static void *_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_tTo_p_faiss__ThreadedIndexT_faiss__IndexBinary_t(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ThreadedIndex< faiss::IndexBinary > *)  ((faiss::IndexShardsTemplate< faiss::IndexBinary > *) x));
+}
+static void *_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_tTo_p_faiss__ThreadedIndexT_faiss__IndexBinary_t(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ThreadedIndex< faiss::IndexBinary > *)  ((faiss::IndexReplicasTemplate< faiss::IndexBinary > *) x));
+}
+static void *_p_faiss__VectorIOWriterTo_p_faiss__IOWriter(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IOWriter *)  ((faiss::VectorIOWriter *) x));
+}
+static void *_p_faiss__FileIOWriterTo_p_faiss__IOWriter(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IOWriter *)  ((faiss::FileIOWriter *) x));
+}
+static void *_p_faiss__BufferedIOWriterTo_p_faiss__IOWriter(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IOWriter *)  ((faiss::BufferedIOWriter *) x));
+}
+static void *_p_PyCallbackIOWriterTo_p_faiss__IOWriter(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IOWriter *)  ((PyCallbackIOWriter *) x));
+}
+static void *_p_faiss__PolysemousTrainingTo_p_faiss__SimulatedAnnealingParameters(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::SimulatedAnnealingParameters *)  ((faiss::PolysemousTraining *) x));
+}
+static void *_p_faiss__SimulatedAnnealingOptimizerTo_p_faiss__SimulatedAnnealingParameters(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::SimulatedAnnealingParameters *)  ((faiss::SimulatedAnnealingOptimizer *) x));
+}
+static void *_p_faiss__ProgressiveDimClusteringTo_p_faiss__ProgressiveDimClusteringParameters(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ProgressiveDimClusteringParameters *)  ((faiss::ProgressiveDimClustering *) x));
+}
+static void *_p_faiss__IVFPQSearchParametersTo_p_faiss__IVFSearchParameters(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IVFSearchParameters *)  ((faiss::IVFPQSearchParameters *) x));
+}
+static void *_p_faiss__Clustering1DTo_p_faiss__ClusteringParameters(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ClusteringParameters *) (faiss::Clustering *) ((faiss::Clustering1D *) x));
+}
+static void *_p_faiss__ClusteringTo_p_faiss__ClusteringParameters(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ClusteringParameters *)  ((faiss::Clustering *) x));
+}
+static void *_p_faiss__ProgressiveDimClusteringTo_p_faiss__ClusteringParameters(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ClusteringParameters *) (faiss::ProgressiveDimClusteringParameters *) ((faiss::ProgressiveDimClustering *) x));
+}
+static void *_p_faiss__ProgressiveDimClusteringParametersTo_p_faiss__ClusteringParameters(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ClusteringParameters *)  ((faiss::ProgressiveDimClusteringParameters *) x));
+}
+static void *_p_faiss__IndexNNDescentFlatTo_p_faiss__IndexNNDescent(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexNNDescent *)  ((faiss::IndexNNDescentFlat *) x));
+}
+static void *_p_faiss__gpu__GpuIndexFlatL2To_p_faiss__gpu__GpuIndexFlat(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexFlat *)  ((faiss::gpu::GpuIndexFlatL2 *) x));
+}
+static void *_p_faiss__gpu__GpuIndexFlatIPTo_p_faiss__gpu__GpuIndexFlat(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexFlat *)  ((faiss::gpu::GpuIndexFlatIP *) x));
+}
+static void *_p_faiss__IndexFlatL2To_p_faiss__IndexFlat(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlat *)  ((faiss::IndexFlatL2 *) x));
+}
+static void *_p_faiss__IndexFlat1DTo_p_faiss__IndexFlat(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlat *) (faiss::IndexFlatL2 *) ((faiss::IndexFlat1D *) x));
+}
+static void *_p_faiss__IndexFlatIPTo_p_faiss__IndexFlat(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlat *)  ((faiss::IndexFlatIP *) x));
+}
+static void *_p_faiss__RangeSearchPartialResultTo_p_faiss__BufferList(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::BufferList *)  ((faiss::RangeSearchPartialResult *) x));
+}
+static void *_p_p_faiss__IndexPQTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexFlatCodes *) ((faiss::IndexPQ **) x));
+}
+static void *_p_p_faiss__IndexRefineTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::IndexRefine **) x));
+}
+static void *_p_p_faiss__IndexIVFFlatDedupTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexIVF *)(faiss::IndexIVFFlat *) ((faiss::IndexIVFFlatDedup **) x));
+}
+static void *_p_p_faiss__IndexPreTransformTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::IndexPreTransform **) x));
+}
+static void *_p_p_faiss__IndexPQFastScanTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::IndexPQFastScan **) x));
+}
+static void *_p_p_faiss__IndexIVFPQFastScanTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexIVF *) ((faiss::IndexIVFPQFastScan **) x));
+}
+static void *_p_p_faiss__IndexNSGFlatTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexNSG *) ((faiss::IndexNSGFlat **) x));
+}
+static void *_p_p_faiss__IndexSplitVectorsTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::IndexSplitVectors **) x));
+}
+static void *_p_p_faiss__IndexIVFFlatTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexIVF *) ((faiss::IndexIVFFlat **) x));
+}
+static void *_p_p_faiss__gpu__GpuIndexIVFFlatTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::gpu::GpuIndex *)(faiss::gpu::GpuIndexIVF *) ((faiss::gpu::GpuIndexIVFFlat **) x));
+}
+static void *_p_p_faiss__IndexIVFLocalSearchQuantizerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexIVF *)(faiss::IndexIVFAdditiveQuantizer *) ((faiss::IndexIVFLocalSearchQuantizer **) x));
+}
+static void *_p_p_faiss__IndexIVFResidualQuantizerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexIVF *)(faiss::IndexIVFAdditiveQuantizer *) ((faiss::IndexIVFResidualQuantizer **) x));
+}
+static void *_p_p_faiss__IndexIVFAdditiveQuantizerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexIVF *) ((faiss::IndexIVFAdditiveQuantizer **) x));
+}
+static void *_p_p_faiss__IndexIVFScalarQuantizerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexIVF *) ((faiss::IndexIVFScalarQuantizer **) x));
+}
+static void *_p_p_faiss__IndexScalarQuantizerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexFlatCodes *) ((faiss::IndexScalarQuantizer **) x));
+}
+static void *_p_p_faiss__LocalSearchCoarseQuantizerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::AdditiveCoarseQuantizer *) ((faiss::LocalSearchCoarseQuantizer **) x));
+}
+static void *_p_p_faiss__ResidualCoarseQuantizerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::AdditiveCoarseQuantizer *) ((faiss::ResidualCoarseQuantizer **) x));
+}
+static void *_p_p_faiss__AdditiveCoarseQuantizerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::AdditiveCoarseQuantizer **) x));
+}
+static void *_p_p_faiss__IndexLocalSearchQuantizerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexFlatCodes *)(faiss::IndexAdditiveQuantizer *) ((faiss::IndexLocalSearchQuantizer **) x));
+}
+static void *_p_p_faiss__MultiIndexQuantizerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::MultiIndexQuantizer **) x));
+}
+static void *_p_p_faiss__IndexAdditiveQuantizerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexFlatCodes *) ((faiss::IndexAdditiveQuantizer **) x));
+}
+static void *_p_p_faiss__IndexResidualQuantizerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexFlatCodes *)(faiss::IndexAdditiveQuantizer *) ((faiss::IndexResidualQuantizer **) x));
+}
+static void *_p_p_faiss__IndexRefineFlatTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexRefine *) ((faiss::IndexRefineFlat **) x));
+}
+static void *_p_p_faiss__gpu__GpuIndexIVFScalarQuantizerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::gpu::GpuIndex *)(faiss::gpu::GpuIndexIVF *) ((faiss::gpu::GpuIndexIVFScalarQuantizer **) x));
+}
+static void *_p_p_faiss__IndexLSHTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexFlatCodes *) ((faiss::IndexLSH **) x));
+}
+static void *_p_p_faiss__IndexIVFPQTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexIVF *) ((faiss::IndexIVFPQ **) x));
+}
+static void *_p_p_faiss__gpu__GpuIndexIVFPQTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::gpu::GpuIndex *)(faiss::gpu::GpuIndexIVF *) ((faiss::gpu::GpuIndexIVFPQ **) x));
+}
+static void *_p_p_faiss__IndexHNSWSQTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexHNSW *) ((faiss::IndexHNSWSQ **) x));
+}
+static void *_p_p_faiss__IndexHNSW2LevelTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexHNSW *) ((faiss::IndexHNSW2Level **) x));
+}
+static void *_p_p_faiss__Index2LayerTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexFlatCodes *) ((faiss::Index2Layer **) x));
+}
+static void *_p_p_faiss__gpu__GpuIndexTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::gpu::GpuIndex **) x));
+}
+static void *_p_p_faiss__IndexFlatL2To_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexFlatCodes *)(faiss::IndexFlat *) ((faiss::IndexFlatL2 **) x));
+}
+static void *_p_p_faiss__gpu__GpuIndexFlatL2To_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::gpu::GpuIndex *)(faiss::gpu::GpuIndexFlat *) ((faiss::gpu::GpuIndexFlatL2 **) x));
+}
+static void *_p_p_faiss__IndexHNSWFlatTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexHNSW *) ((faiss::IndexHNSWFlat **) x));
+}
+static void *_p_p_faiss__IndexIVFPQRTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexIVF *)(faiss::IndexIVFPQ *) ((faiss::IndexIVFPQR **) x));
+}
+static void *_p_p_faiss__IndexFlat1DTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexFlatCodes *)(faiss::IndexFlat *)(faiss::IndexFlatL2 *) ((faiss::IndexFlat1D **) x));
+}
+static void *_p_p_faiss__IndexNNDescentFlatTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexNNDescent *) ((faiss::IndexNNDescentFlat **) x));
+}
+static void *_p_p_faiss__IndexFlatTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexFlatCodes *) ((faiss::IndexFlat **) x));
+}
+static void *_p_p_faiss__IndexFlatIPTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexFlatCodes *)(faiss::IndexFlat *) ((faiss::IndexFlatIP **) x));
+}
+static void *_p_p_faiss__IndexNSGTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::IndexNSG **) x));
+}
+static void *_p_p_faiss__gpu__GpuIndexFlatTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::gpu::GpuIndex *) ((faiss::gpu::GpuIndexFlat **) x));
+}
+static void *_p_p_faiss__gpu__GpuIndexFlatIPTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::gpu::GpuIndex *)(faiss::gpu::GpuIndexFlat *) ((faiss::gpu::GpuIndexFlatIP **) x));
+}
+static void *_p_p_faiss__IndexFlatCodesTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::IndexFlatCodes **) x));
+}
+static void *_p_p_faiss__IndexNNDescentTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::IndexNNDescent **) x));
+}
+static void *_p_p_faiss__IndexHNSWTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::IndexHNSW **) x));
+}
+static void *_p_p_faiss__IndexHNSWPQTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexHNSW *) ((faiss::IndexHNSWPQ **) x));
+}
+static void *_p_p_faiss__IndexLatticeTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::IndexLattice **) x));
+}
+static void *_p_p_faiss__IndexIVFSpectralHashTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexIVF *) ((faiss::IndexIVFSpectralHash **) x));
+}
+static void *_p_p_faiss__IndexIVFTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::IndexIVF **) x));
+}
+static void *_p_p_faiss__gpu__GpuIndexIVFTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::gpu::GpuIndex *) ((faiss::gpu::GpuIndexIVF **) x));
+}
+static void *_p_p_faiss__ThreadedIndexT_faiss__Index_tTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::ThreadedIndex< faiss::Index > **) x));
+}
+static void *_p_p_faiss__IndexShardsTemplateT_faiss__Index_tTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::ThreadedIndex< faiss::Index > *) ((faiss::IndexShardsTemplate< faiss::Index > **) x));
+}
+static void *_p_p_faiss__IndexReplicasTemplateT_faiss__Index_tTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::ThreadedIndex< faiss::Index > *) ((faiss::IndexReplicasTemplate< faiss::Index > **) x));
+}
+static void *_p_p_faiss__IndexIDMapTemplateT_faiss__Index_tTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **)  ((faiss::IndexIDMapTemplate< faiss::Index > **) x));
+}
+static void *_p_p_faiss__IndexIDMap2TemplateT_faiss__Index_tTo_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::IndexIDMapTemplate< faiss::Index > *) ((faiss::IndexIDMap2Template< faiss::Index > **) x));
+}
+static void *_p_p_faiss__MultiIndexQuantizer2To_p_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index **) (faiss::MultiIndexQuantizer *) ((faiss::MultiIndexQuantizer2 **) x));
+}
+static void *_p_faiss__IndexPQTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexFlatCodes *) ((faiss::IndexPQ *) x));
+}
+static void *_p_faiss__IndexRefineTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::IndexRefine *) x));
+}
+static void *_p_faiss__IndexIVFFlatDedupTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexIVF *)(faiss::IndexIVFFlat *) ((faiss::IndexIVFFlatDedup *) x));
+}
+static void *_p_faiss__IndexPreTransformTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::IndexPreTransform *) x));
+}
+static void *_p_faiss__IndexPQFastScanTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::IndexPQFastScan *) x));
+}
+static void *_p_faiss__IndexIVFPQFastScanTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexIVF *) ((faiss::IndexIVFPQFastScan *) x));
+}
+static void *_p_faiss__IndexNSGFlatTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexNSG *) ((faiss::IndexNSGFlat *) x));
+}
+static void *_p_faiss__IndexSplitVectorsTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::IndexSplitVectors *) x));
+}
+static void *_p_faiss__IndexIVFFlatTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexIVF *) ((faiss::IndexIVFFlat *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFFlatTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::gpu::GpuIndex *)(faiss::gpu::GpuIndexIVF *) ((faiss::gpu::GpuIndexIVFFlat *) x));
+}
+static void *_p_faiss__IndexIVFLocalSearchQuantizerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexIVF *)(faiss::IndexIVFAdditiveQuantizer *) ((faiss::IndexIVFLocalSearchQuantizer *) x));
+}
+static void *_p_faiss__IndexIVFResidualQuantizerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexIVF *)(faiss::IndexIVFAdditiveQuantizer *) ((faiss::IndexIVFResidualQuantizer *) x));
+}
+static void *_p_faiss__IndexIVFAdditiveQuantizerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexIVF *) ((faiss::IndexIVFAdditiveQuantizer *) x));
+}
+static void *_p_faiss__IndexIVFScalarQuantizerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexIVF *) ((faiss::IndexIVFScalarQuantizer *) x));
+}
+static void *_p_faiss__IndexScalarQuantizerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexFlatCodes *) ((faiss::IndexScalarQuantizer *) x));
+}
+static void *_p_faiss__LocalSearchCoarseQuantizerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::AdditiveCoarseQuantizer *) ((faiss::LocalSearchCoarseQuantizer *) x));
+}
+static void *_p_faiss__ResidualCoarseQuantizerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::AdditiveCoarseQuantizer *) ((faiss::ResidualCoarseQuantizer *) x));
+}
+static void *_p_faiss__AdditiveCoarseQuantizerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::AdditiveCoarseQuantizer *) x));
+}
+static void *_p_faiss__IndexLocalSearchQuantizerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexFlatCodes *)(faiss::IndexAdditiveQuantizer *) ((faiss::IndexLocalSearchQuantizer *) x));
+}
+static void *_p_faiss__MultiIndexQuantizerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::MultiIndexQuantizer *) x));
+}
+static void *_p_faiss__IndexAdditiveQuantizerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexFlatCodes *) ((faiss::IndexAdditiveQuantizer *) x));
+}
+static void *_p_faiss__IndexResidualQuantizerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexFlatCodes *)(faiss::IndexAdditiveQuantizer *) ((faiss::IndexResidualQuantizer *) x));
+}
+static void *_p_faiss__IndexRefineFlatTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexRefine *) ((faiss::IndexRefineFlat *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFScalarQuantizerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::gpu::GpuIndex *)(faiss::gpu::GpuIndexIVF *) ((faiss::gpu::GpuIndexIVFScalarQuantizer *) x));
+}
+static void *_p_faiss__IndexLSHTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexFlatCodes *) ((faiss::IndexLSH *) x));
+}
+static void *_p_faiss__IndexIVFPQTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexIVF *) ((faiss::IndexIVFPQ *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFPQTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::gpu::GpuIndex *)(faiss::gpu::GpuIndexIVF *) ((faiss::gpu::GpuIndexIVFPQ *) x));
+}
+static void *_p_faiss__IndexHNSWSQTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexHNSW *) ((faiss::IndexHNSWSQ *) x));
+}
+static void *_p_faiss__IndexHNSW2LevelTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexHNSW *) ((faiss::IndexHNSW2Level *) x));
+}
+static void *_p_faiss__Index2LayerTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexFlatCodes *) ((faiss::Index2Layer *) x));
+}
+static void *_p_faiss__gpu__GpuIndexTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::gpu::GpuIndex *) x));
+}
+static void *_p_faiss__IndexFlatL2To_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexFlatCodes *)(faiss::IndexFlat *) ((faiss::IndexFlatL2 *) x));
+}
+static void *_p_faiss__gpu__GpuIndexFlatL2To_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::gpu::GpuIndex *)(faiss::gpu::GpuIndexFlat *) ((faiss::gpu::GpuIndexFlatL2 *) x));
+}
+static void *_p_faiss__IndexHNSWFlatTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexHNSW *) ((faiss::IndexHNSWFlat *) x));
+}
+static void *_p_faiss__IndexIVFPQRTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexIVF *)(faiss::IndexIVFPQ *) ((faiss::IndexIVFPQR *) x));
+}
+static void *_p_faiss__IndexFlat1DTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexFlatCodes *)(faiss::IndexFlat *)(faiss::IndexFlatL2 *) ((faiss::IndexFlat1D *) x));
+}
+static void *_p_faiss__IndexNNDescentFlatTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexNNDescent *) ((faiss::IndexNNDescentFlat *) x));
+}
+static void *_p_faiss__IndexFlatTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexFlatCodes *) ((faiss::IndexFlat *) x));
+}
+static void *_p_faiss__IndexFlatIPTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexFlatCodes *)(faiss::IndexFlat *) ((faiss::IndexFlatIP *) x));
+}
+static void *_p_faiss__IndexNSGTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::IndexNSG *) x));
+}
+static void *_p_faiss__gpu__GpuIndexFlatTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::gpu::GpuIndex *) ((faiss::gpu::GpuIndexFlat *) x));
+}
+static void *_p_faiss__gpu__GpuIndexFlatIPTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::gpu::GpuIndex *)(faiss::gpu::GpuIndexFlat *) ((faiss::gpu::GpuIndexFlatIP *) x));
+}
+static void *_p_faiss__IndexFlatCodesTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::IndexFlatCodes *) x));
+}
+static void *_p_faiss__IndexNNDescentTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::IndexNNDescent *) x));
+}
+static void *_p_faiss__IndexHNSWTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::IndexHNSW *) x));
+}
+static void *_p_faiss__IndexHNSWPQTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexHNSW *) ((faiss::IndexHNSWPQ *) x));
+}
+static void *_p_faiss__IndexLatticeTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::IndexLattice *) x));
+}
+static void *_p_faiss__IndexIVFSpectralHashTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexIVF *) ((faiss::IndexIVFSpectralHash *) x));
+}
+static void *_p_faiss__IndexIVFTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::IndexIVF *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::gpu::GpuIndex *) ((faiss::gpu::GpuIndexIVF *) x));
+}
+static void *_p_faiss__ThreadedIndexT_faiss__Index_tTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::ThreadedIndex< faiss::Index > *) x));
+}
+static void *_p_faiss__IndexShardsTemplateT_faiss__Index_tTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::ThreadedIndex< faiss::Index > *) ((faiss::IndexShardsTemplate< faiss::Index > *) x));
+}
+static void *_p_faiss__IndexReplicasTemplateT_faiss__Index_tTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::ThreadedIndex< faiss::Index > *) ((faiss::IndexReplicasTemplate< faiss::Index > *) x));
+}
+static void *_p_faiss__IndexIDMapTemplateT_faiss__Index_tTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *)  ((faiss::IndexIDMapTemplate< faiss::Index > *) x));
+}
+static void *_p_faiss__IndexIDMap2TemplateT_faiss__Index_tTo_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::IndexIDMapTemplate< faiss::Index > *) ((faiss::IndexIDMap2Template< faiss::Index > *) x));
+}
+static void *_p_faiss__MultiIndexQuantizer2To_p_faiss__Index(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Index *) (faiss::MultiIndexQuantizer *) ((faiss::MultiIndexQuantizer2 *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFPQConfigTo_p_faiss__gpu__GpuIndexIVFConfig(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexIVFConfig *)  ((faiss::gpu::GpuIndexIVFPQConfig *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFFlatConfigTo_p_faiss__gpu__GpuIndexIVFConfig(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexIVFConfig *)  ((faiss::gpu::GpuIndexIVFFlatConfig *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFScalarQuantizerConfigTo_p_faiss__gpu__GpuIndexIVFConfig(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexIVFConfig *)  ((faiss::gpu::GpuIndexIVFScalarQuantizerConfig *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFPQConfigTo_p_faiss__gpu__GpuIndexConfig(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexConfig *) (faiss::gpu::GpuIndexIVFConfig *) ((faiss::gpu::GpuIndexIVFPQConfig *) x));
+}
+static void *_p_faiss__gpu__GpuIndexFlatConfigTo_p_faiss__gpu__GpuIndexConfig(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexConfig *)  ((faiss::gpu::GpuIndexFlatConfig *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFConfigTo_p_faiss__gpu__GpuIndexConfig(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexConfig *)  ((faiss::gpu::GpuIndexIVFConfig *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFFlatConfigTo_p_faiss__gpu__GpuIndexConfig(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexConfig *) (faiss::gpu::GpuIndexIVFConfig *) ((faiss::gpu::GpuIndexIVFFlatConfig *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFScalarQuantizerConfigTo_p_faiss__gpu__GpuIndexConfig(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexConfig *) (faiss::gpu::GpuIndexIVFConfig *) ((faiss::gpu::GpuIndexIVFScalarQuantizerConfig *) x));
+}
+static void *_p_faiss__gpu__GpuIndexBinaryFlatConfigTo_p_faiss__gpu__GpuIndexConfig(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexConfig *)  ((faiss::gpu::GpuIndexBinaryFlatConfig *) x));
+}
+static void *_p_faiss__ResidualQuantizerTo_p_faiss__AdditiveQuantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::AdditiveQuantizer *)  ((faiss::ResidualQuantizer *) x));
+}
+static void *_p_faiss__LocalSearchQuantizerTo_p_faiss__AdditiveQuantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::AdditiveQuantizer *)  ((faiss::LocalSearchQuantizer *) x));
+}
+static void *_p_faiss__MultiIndexQuantizer2To_p_faiss__MultiIndexQuantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::MultiIndexQuantizer *)  ((faiss::MultiIndexQuantizer2 *) x));
+}
+static void *_p_faiss__IndexResidualQuantizerTo_p_faiss__IndexAdditiveQuantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexAdditiveQuantizer *)  ((faiss::IndexResidualQuantizer *) x));
+}
+static void *_p_faiss__IndexLocalSearchQuantizerTo_p_faiss__IndexAdditiveQuantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexAdditiveQuantizer *)  ((faiss::IndexLocalSearchQuantizer *) x));
+}
+static void *_p_faiss__ResidualCoarseQuantizerTo_p_faiss__AdditiveCoarseQuantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::AdditiveCoarseQuantizer *)  ((faiss::ResidualCoarseQuantizer *) x));
+}
+static void *_p_faiss__LocalSearchCoarseQuantizerTo_p_faiss__AdditiveCoarseQuantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::AdditiveCoarseQuantizer *)  ((faiss::LocalSearchCoarseQuantizer *) x));
+}
+static void *_p_faiss__IndexIVFPQFastScanTo_p_faiss__Level1Quantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Level1Quantizer *) (faiss::IndexIVF *) ((faiss::IndexIVFPQFastScan *) x));
+}
+static void *_p_faiss__IndexIVFTo_p_faiss__Level1Quantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Level1Quantizer *)  ((faiss::IndexIVF *) x));
+}
+static void *_p_faiss__IndexIVFScalarQuantizerTo_p_faiss__Level1Quantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Level1Quantizer *) (faiss::IndexIVF *) ((faiss::IndexIVFScalarQuantizer *) x));
+}
+static void *_p_faiss__IndexIVFAdditiveQuantizerTo_p_faiss__Level1Quantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Level1Quantizer *) (faiss::IndexIVF *) ((faiss::IndexIVFAdditiveQuantizer *) x));
+}
+static void *_p_faiss__IndexIVFResidualQuantizerTo_p_faiss__Level1Quantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Level1Quantizer *) (faiss::IndexIVF *)(faiss::IndexIVFAdditiveQuantizer *) ((faiss::IndexIVFResidualQuantizer *) x));
+}
+static void *_p_faiss__IndexIVFLocalSearchQuantizerTo_p_faiss__Level1Quantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Level1Quantizer *) (faiss::IndexIVF *)(faiss::IndexIVFAdditiveQuantizer *) ((faiss::IndexIVFLocalSearchQuantizer *) x));
+}
+static void *_p_faiss__IndexIVFPQTo_p_faiss__Level1Quantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Level1Quantizer *) (faiss::IndexIVF *) ((faiss::IndexIVFPQ *) x));
+}
+static void *_p_faiss__IndexIVFFlatTo_p_faiss__Level1Quantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Level1Quantizer *) (faiss::IndexIVF *) ((faiss::IndexIVFFlat *) x));
+}
+static void *_p_faiss__IndexIVFFlatDedupTo_p_faiss__Level1Quantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Level1Quantizer *) (faiss::IndexIVF *)(faiss::IndexIVFFlat *) ((faiss::IndexIVFFlatDedup *) x));
+}
+static void *_p_faiss__IndexIVFPQRTo_p_faiss__Level1Quantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Level1Quantizer *) (faiss::IndexIVF *)(faiss::IndexIVFPQ *) ((faiss::IndexIVFPQR *) x));
+}
+static void *_p_faiss__IndexIVFSpectralHashTo_p_faiss__Level1Quantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Level1Quantizer *) (faiss::IndexIVF *) ((faiss::IndexIVFSpectralHash *) x));
+}
+static void *_p_faiss__IndexIVFResidualQuantizerTo_p_faiss__IndexIVFAdditiveQuantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVFAdditiveQuantizer *)  ((faiss::IndexIVFResidualQuantizer *) x));
+}
+static void *_p_faiss__IndexIVFLocalSearchQuantizerTo_p_faiss__IndexIVFAdditiveQuantizer(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVFAdditiveQuantizer *)  ((faiss::IndexIVFLocalSearchQuantizer *) x));
+}
+static void *_p_faiss__ZnSphereCodecTo_p_faiss__ZnSphereSearch(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ZnSphereSearch *)  ((faiss::ZnSphereCodec *) x));
+}
+static void *_p_faiss__ZnSphereCodecAltTo_p_faiss__ZnSphereSearch(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ZnSphereSearch *) (faiss::ZnSphereCodec *) ((faiss::ZnSphereCodecAlt *) x));
+}
+static void *_p_faiss__VectorIOReaderTo_p_faiss__IOReader(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IOReader *)  ((faiss::VectorIOReader *) x));
+}
+static void *_p_faiss__FileIOReaderTo_p_faiss__IOReader(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IOReader *)  ((faiss::FileIOReader *) x));
+}
+static void *_p_faiss__BufferedIOReaderTo_p_faiss__IOReader(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IOReader *)  ((faiss::BufferedIOReader *) x));
+}
+static void *_p_PyCallbackIOReaderTo_p_faiss__IOReader(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IOReader *)  ((PyCallbackIOReader *) x));
+}
+static void *_p_faiss__IDSelectorBatchTo_p_faiss__IDSelector(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IDSelector *)  ((faiss::IDSelectorBatch *) x));
+}
+static void *_p_faiss__IDSelectorRangeTo_p_faiss__IDSelector(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IDSelector *)  ((faiss::IDSelectorRange *) x));
+}
+static void *_p_faiss__IDSelectorArrayTo_p_faiss__IDSelector(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IDSelector *)  ((faiss::IDSelectorArray *) x));
+}
+static void *_p_faiss__BlockInvertedListsIOHookTo_p_faiss__InvertedListsIOHook(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedListsIOHook *)  ((faiss::BlockInvertedListsIOHook *) x));
+}
+static void *_p_faiss__OnDiskInvertedListsIOHookTo_p_faiss__InvertedListsIOHook(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::InvertedListsIOHook *)  ((faiss::OnDiskInvertedListsIOHook *) x));
+}
+static void *_p_faiss__gpu__GpuProgressiveDimIndexFactoryTo_p_faiss__ProgressiveDimIndexFactory(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ProgressiveDimIndexFactory *)  ((faiss::gpu::GpuProgressiveDimIndexFactory *) x));
+}
+static void *_p_faiss__gpu__GpuIcmEncoderFactoryTo_p_faiss__lsq__IcmEncoderFactory(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::lsq::IcmEncoderFactory *)  ((faiss::gpu::GpuIcmEncoderFactory *) x));
+}
+static void *_p_faiss__IndexFlatTo_p_faiss__IndexFlatCodes(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlatCodes *)  ((faiss::IndexFlat *) x));
+}
+static void *_p_faiss__IndexFlatL2To_p_faiss__IndexFlatCodes(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlatCodes *) (faiss::IndexFlat *) ((faiss::IndexFlatL2 *) x));
+}
+static void *_p_faiss__IndexFlat1DTo_p_faiss__IndexFlatCodes(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlatCodes *) (faiss::IndexFlat *)(faiss::IndexFlatL2 *) ((faiss::IndexFlat1D *) x));
+}
+static void *_p_faiss__IndexPQTo_p_faiss__IndexFlatCodes(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlatCodes *)  ((faiss::IndexPQ *) x));
+}
+static void *_p_faiss__IndexAdditiveQuantizerTo_p_faiss__IndexFlatCodes(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlatCodes *)  ((faiss::IndexAdditiveQuantizer *) x));
+}
+static void *_p_faiss__IndexResidualQuantizerTo_p_faiss__IndexFlatCodes(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlatCodes *) (faiss::IndexAdditiveQuantizer *) ((faiss::IndexResidualQuantizer *) x));
+}
+static void *_p_faiss__IndexLocalSearchQuantizerTo_p_faiss__IndexFlatCodes(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlatCodes *) (faiss::IndexAdditiveQuantizer *) ((faiss::IndexLocalSearchQuantizer *) x));
+}
+static void *_p_faiss__IndexScalarQuantizerTo_p_faiss__IndexFlatCodes(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlatCodes *)  ((faiss::IndexScalarQuantizer *) x));
+}
+static void *_p_faiss__Index2LayerTo_p_faiss__IndexFlatCodes(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlatCodes *)  ((faiss::Index2Layer *) x));
+}
+static void *_p_faiss__IndexFlatIPTo_p_faiss__IndexFlatCodes(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlatCodes *) (faiss::IndexFlat *) ((faiss::IndexFlatIP *) x));
+}
+static void *_p_faiss__IndexLSHTo_p_faiss__IndexFlatCodes(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexFlatCodes *)  ((faiss::IndexLSH *) x));
+}
+static void *_p_faiss__Clustering1DTo_p_faiss__Clustering(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::Clustering *)  ((faiss::Clustering1D *) x));
+}
+static void *_p_faiss__IndexBinaryFlatTo_p_faiss__IndexBinary(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexBinary *)  ((faiss::IndexBinaryFlat *) x));
+}
+static void *_p_faiss__gpu__GpuIndexBinaryFlatTo_p_faiss__IndexBinary(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexBinary *)  ((faiss::gpu::GpuIndexBinaryFlat *) x));
+}
+static void *_p_faiss__IndexBinaryMultiHashTo_p_faiss__IndexBinary(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexBinary *)  ((faiss::IndexBinaryMultiHash *) x));
+}
+static void *_p_faiss__ThreadedIndexT_faiss__IndexBinary_tTo_p_faiss__IndexBinary(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexBinary *)  ((faiss::ThreadedIndex< faiss::IndexBinary > *) x));
+}
+static void *_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_tTo_p_faiss__IndexBinary(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexBinary *) (faiss::ThreadedIndex< faiss::IndexBinary > *) ((faiss::IndexShardsTemplate< faiss::IndexBinary > *) x));
+}
+static void *_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_tTo_p_faiss__IndexBinary(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexBinary *) (faiss::ThreadedIndex< faiss::IndexBinary > *) ((faiss::IndexReplicasTemplate< faiss::IndexBinary > *) x));
+}
+static void *_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_tTo_p_faiss__IndexBinary(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexBinary *)  ((faiss::IndexIDMapTemplate< faiss::IndexBinary > *) x));
+}
+static void *_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_tTo_p_faiss__IndexBinary(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexBinary *) (faiss::IndexIDMapTemplate< faiss::IndexBinary > *) ((faiss::IndexIDMap2Template< faiss::IndexBinary > *) x));
+}
+static void *_p_faiss__IndexBinaryHNSWTo_p_faiss__IndexBinary(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexBinary *)  ((faiss::IndexBinaryHNSW *) x));
+}
+static void *_p_faiss__IndexBinaryIVFTo_p_faiss__IndexBinary(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexBinary *)  ((faiss::IndexBinaryIVF *) x));
+}
+static void *_p_faiss__IndexBinaryFromFloatTo_p_faiss__IndexBinary(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexBinary *)  ((faiss::IndexBinaryFromFloat *) x));
+}
+static void *_p_faiss__IndexBinaryHashTo_p_faiss__IndexBinary(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexBinary *)  ((faiss::IndexBinaryHash *) x));
+}
+static void *_p_faiss__IndexIVFFlatDedupTo_p_faiss__IndexIVFFlat(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVFFlat *)  ((faiss::IndexIVFFlatDedup *) x));
+}
+static void *_p_faiss__IndexIVFPQFastScanTo_p_faiss__IndexIVF(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVF *)  ((faiss::IndexIVFPQFastScan *) x));
+}
+static void *_p_faiss__IndexIVFScalarQuantizerTo_p_faiss__IndexIVF(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVF *)  ((faiss::IndexIVFScalarQuantizer *) x));
+}
+static void *_p_faiss__IndexIVFAdditiveQuantizerTo_p_faiss__IndexIVF(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVF *)  ((faiss::IndexIVFAdditiveQuantizer *) x));
+}
+static void *_p_faiss__IndexIVFResidualQuantizerTo_p_faiss__IndexIVF(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVF *) (faiss::IndexIVFAdditiveQuantizer *) ((faiss::IndexIVFResidualQuantizer *) x));
+}
+static void *_p_faiss__IndexIVFLocalSearchQuantizerTo_p_faiss__IndexIVF(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVF *) (faiss::IndexIVFAdditiveQuantizer *) ((faiss::IndexIVFLocalSearchQuantizer *) x));
+}
+static void *_p_faiss__IndexIVFPQTo_p_faiss__IndexIVF(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVF *)  ((faiss::IndexIVFPQ *) x));
+}
+static void *_p_faiss__IndexIVFFlatTo_p_faiss__IndexIVF(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVF *)  ((faiss::IndexIVFFlat *) x));
+}
+static void *_p_faiss__IndexIVFFlatDedupTo_p_faiss__IndexIVF(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVF *) (faiss::IndexIVFFlat *) ((faiss::IndexIVFFlatDedup *) x));
+}
+static void *_p_faiss__IndexIVFPQRTo_p_faiss__IndexIVF(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVF *) (faiss::IndexIVFPQ *) ((faiss::IndexIVFPQR *) x));
+}
+static void *_p_faiss__IndexIVFSpectralHashTo_p_faiss__IndexIVF(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVF *)  ((faiss::IndexIVFSpectralHash *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFPQTo_p_faiss__gpu__GpuIndexIVF(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexIVF *)  ((faiss::gpu::GpuIndexIVFPQ *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFScalarQuantizerTo_p_faiss__gpu__GpuIndexIVF(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexIVF *)  ((faiss::gpu::GpuIndexIVFScalarQuantizer *) x));
+}
+static void *_p_faiss__gpu__GpuIndexIVFFlatTo_p_faiss__gpu__GpuIndexIVF(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::gpu::GpuIndexIVF *)  ((faiss::gpu::GpuIndexIVFFlat *) x));
+}
+static void *_p_faiss__gpu__GpuParameterSpaceTo_p_faiss__ParameterSpace(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::ParameterSpace *)  ((faiss::gpu::GpuParameterSpace *) x));
+}
+static void *_p_faiss__OneRecallAtRCriterionTo_p_faiss__AutoTuneCriterion(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::AutoTuneCriterion *)  ((faiss::OneRecallAtRCriterion *) x));
+}
+static void *_p_faiss__IntersectionCriterionTo_p_faiss__AutoTuneCriterion(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::AutoTuneCriterion *)  ((faiss::IntersectionCriterion *) x));
+}
+static void *_p_faiss__IndexIVFPQRTo_p_faiss__IndexIVFPQ(void *x, int *SWIGUNUSEDPARM(newmemory)) {
+    return (void *)((faiss::IndexIVFPQ *)  ((faiss::IndexIVFPQR *) x));
+}
+static swig_type_info _swigt__p_Crev = {"_p_Crev", "Crev *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_FILE = {"_p_FILE", "FILE *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_InvertedListMap = {"_p_InvertedListMap", "InvertedListMap *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_KNNGraph = {"_p_KNNGraph", "KNNGraph *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_List = {"_p_List", "List *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_Map = {"_p_Map", "Map *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_MapLong2Long = {"_p_MapLong2Long", "MapLong2Long *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_Node = {"_p_Node", "Node *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_PyCallbackIOReader = {"_p_PyCallbackIOReader", "PyCallbackIOReader *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_PyCallbackIOWriter = {"_p_PyCallbackIOWriter", "PyCallbackIOWriter *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_Search_type_t = {"_p_Search_type_t", "Search_type_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_T = {"_p_T", "T *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_TI = {"_p_TI", "TI *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_Type = {"_p_Type", "Type *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_allocator_type = {"_p_allocator_type", "allocator_type *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_char = {"_p_char", "char *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_component_t = {"_p_component_t", "component_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_difference_type = {"_p_difference_type", "difference_type *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_distance_t = {"_p_distance_t", "distance_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_double = {"_p_double", "double *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__AdditiveCoarseQuantizer = {"_p_faiss__AdditiveCoarseQuantizer", "faiss::AdditiveCoarseQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__AdditiveQuantizer = {"_p_faiss__AdditiveQuantizer", "faiss::AdditiveQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__AlignedTableT_float_32_t = {"_p_faiss__AlignedTableT_float_32_t", "faiss::AlignedTable< float > *|faiss::AlignedTable< float,32 > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__AlignedTableT_unsigned_char_32_t = {"_p_faiss__AlignedTableT_unsigned_char_32_t", "faiss::AlignedTable< unsigned char > *|faiss::AlignedTable< uint8_t > *|faiss::AlignedTable< unsigned char,32 > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__AlignedTableT_unsigned_short_32_t = {"_p_faiss__AlignedTableT_unsigned_short_32_t", "faiss::AlignedTable< unsigned short > *|faiss::AlignedTable< uint16_t > *|faiss::AlignedTable< unsigned short,32 > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__AlignedTableTightAllocT_float_32_t = {"_p_faiss__AlignedTableTightAllocT_float_32_t", "faiss::AlignedTableTightAlloc< float,32 > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__AlignedTableTightAllocT_unsigned_char_32_t = {"_p_faiss__AlignedTableTightAllocT_unsigned_char_32_t", "faiss::AlignedTableTightAlloc< unsigned char,32 > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__AlignedTableTightAllocT_unsigned_short_32_t = {"_p_faiss__AlignedTableTightAllocT_unsigned_short_32_t", "faiss::AlignedTableTightAlloc< unsigned short,32 > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ArrayInvertedLists = {"_p_faiss__ArrayInvertedLists", "faiss::ArrayInvertedLists *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__AutoTuneCriterion = {"_p_faiss__AutoTuneCriterion", "faiss::AutoTuneCriterion *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__BinaryInvertedListScanner = {"_p_faiss__BinaryInvertedListScanner", "faiss::BinaryInvertedListScanner *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__BitstringReader = {"_p_faiss__BitstringReader", "faiss::BitstringReader *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__BitstringWriter = {"_p_faiss__BitstringWriter", "faiss::BitstringWriter *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__BlockInvertedLists = {"_p_faiss__BlockInvertedLists", "faiss::BlockInvertedLists *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__BufferList = {"_p_faiss__BufferList", "faiss::BufferList *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__BufferedIOReader = {"_p_faiss__BufferedIOReader", "faiss::BufferedIOReader *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__BufferedIOWriter = {"_p_faiss__BufferedIOWriter", "faiss::BufferedIOWriter *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__CenteringTransform = {"_p_faiss__CenteringTransform", "faiss::CenteringTransform *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__Cloner = {"_p_faiss__Cloner", "faiss::Cloner *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__Clustering = {"_p_faiss__Clustering", "faiss::Clustering *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__Clustering1D = {"_p_faiss__Clustering1D", "faiss::Clustering1D *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ClusteringIterationStats = {"_p_faiss__ClusteringIterationStats", "faiss::ClusteringIterationStats *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ClusteringParameters = {"_p_faiss__ClusteringParameters", "faiss::ClusteringParameters *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__DirectMap = {"_p_faiss__DirectMap", "faiss::DirectMap *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__DirectMapAdd = {"_p_faiss__DirectMapAdd", "faiss::DirectMapAdd *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__DistanceComputer = {"_p_faiss__DistanceComputer", "faiss::DistanceComputer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__EnumeratedVectors = {"_p_faiss__EnumeratedVectors", "faiss::EnumeratedVectors *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__FastScanStats = {"_p_faiss__FastScanStats", "faiss::FastScanStats *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__FileIOReader = {"_p_faiss__FileIOReader", "faiss::FileIOReader *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__FileIOWriter = {"_p_faiss__FileIOWriter", "faiss::FileIOWriter *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__HNSW = {"_p_faiss__HNSW", "faiss::HNSW *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__HNSWStats = {"_p_faiss__HNSWStats", "faiss::HNSWStats *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__HNSW__MinimaxHeap = {"_p_faiss__HNSW__MinimaxHeap", "faiss::HNSW::MinimaxHeap *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__HStackInvertedLists = {"_p_faiss__HStackInvertedLists", "faiss::HStackInvertedLists *|faiss::ConcatenatedInvertedLists *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t = {"_p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t", "faiss::HeapArray< faiss::CMax< float,long > > *|faiss::HeapArray< faiss::CMax< float,int64_t > > *|faiss::float_maxheap_array_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t = {"_p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t", "faiss::HeapArray< faiss::CMax< int,long > > *|faiss::HeapArray< faiss::CMax< int,int64_t > > *|faiss::int_maxheap_array_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t = {"_p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t", "faiss::HeapArray< faiss::CMin< float,long > > *|faiss::HeapArray< faiss::CMin< float,int64_t > > *|faiss::float_minheap_array_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t = {"_p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t", "faiss::HeapArray< faiss::CMin< int,long > > *|faiss::HeapArray< faiss::CMin< int,int64_t > > *|faiss::int_minheap_array_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IDSelector = {"_p_faiss__IDSelector", "faiss::IDSelector *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IDSelectorArray = {"_p_faiss__IDSelectorArray", "faiss::IDSelectorArray *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IDSelectorBatch = {"_p_faiss__IDSelectorBatch", "faiss::IDSelectorBatch *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IDSelectorRange = {"_p_faiss__IDSelectorRange", "faiss::IDSelectorRange *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IOReader = {"_p_faiss__IOReader", "faiss::IOReader *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IOWriter = {"_p_faiss__IOWriter", "faiss::IOWriter *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ITQMatrix = {"_p_faiss__ITQMatrix", "faiss::ITQMatrix *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ITQTransform = {"_p_faiss__ITQTransform", "faiss::ITQTransform *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IVFFastScanStats = {"_p_faiss__IVFFastScanStats", "faiss::IVFFastScanStats *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IVFPQSearchParameters = {"_p_faiss__IVFPQSearchParameters", "faiss::IVFPQSearchParameters *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IVFSearchParameters = {"_p_faiss__IVFSearchParameters", "faiss::IVFSearchParameters *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__Index = {"_p_faiss__Index", "faiss::Index *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__Index2Layer = {"_p_faiss__Index2Layer", "faiss::Index2Layer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexAdditiveQuantizer = {"_p_faiss__IndexAdditiveQuantizer", "faiss::IndexAdditiveQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexBinary = {"_p_faiss__IndexBinary", "faiss::IndexBinary *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexBinaryFlat = {"_p_faiss__IndexBinaryFlat", "faiss::IndexBinaryFlat *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexBinaryFromFloat = {"_p_faiss__IndexBinaryFromFloat", "faiss::IndexBinaryFromFloat *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexBinaryHNSW = {"_p_faiss__IndexBinaryHNSW", "faiss::IndexBinaryHNSW *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexBinaryHash = {"_p_faiss__IndexBinaryHash", "faiss::IndexBinaryHash *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexBinaryHashStats = {"_p_faiss__IndexBinaryHashStats", "faiss::IndexBinaryHashStats *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexBinaryIVF = {"_p_faiss__IndexBinaryIVF", "faiss::IndexBinaryIVF *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexBinaryMultiHash = {"_p_faiss__IndexBinaryMultiHash", "faiss::IndexBinaryMultiHash *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexFlat = {"_p_faiss__IndexFlat", "faiss::IndexFlat *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexFlat1D = {"_p_faiss__IndexFlat1D", "faiss::IndexFlat1D *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexFlatCodes = {"_p_faiss__IndexFlatCodes", "faiss::IndexFlatCodes *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexFlatIP = {"_p_faiss__IndexFlatIP", "faiss::IndexFlatIP *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexFlatL2 = {"_p_faiss__IndexFlatL2", "faiss::IndexFlatL2 *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexHNSW = {"_p_faiss__IndexHNSW", "faiss::IndexHNSW *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexHNSW2Level = {"_p_faiss__IndexHNSW2Level", "faiss::IndexHNSW2Level *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexHNSWFlat = {"_p_faiss__IndexHNSWFlat", "faiss::IndexHNSWFlat *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexHNSWPQ = {"_p_faiss__IndexHNSWPQ", "faiss::IndexHNSWPQ *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexHNSWSQ = {"_p_faiss__IndexHNSWSQ", "faiss::IndexHNSWSQ *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t = {"_p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t", "faiss::IndexBinaryIDMap2 *|faiss::IndexIDMap2Template< faiss::IndexBinary > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIDMap2TemplateT_faiss__Index_t = {"_p_faiss__IndexIDMap2TemplateT_faiss__Index_t", "faiss::IndexIDMap2Template< faiss::Index > *|faiss::IndexIDMap2 *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t = {"_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t", "faiss::IndexBinaryIDMap *|faiss::IndexIDMapTemplate< faiss::IndexBinary > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIDMapTemplateT_faiss__Index_t = {"_p_faiss__IndexIDMapTemplateT_faiss__Index_t", "faiss::IndexIDMap *|faiss::IndexIDMapTemplate< faiss::Index > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIVF = {"_p_faiss__IndexIVF", "faiss::IndexIVF *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIVFAdditiveQuantizer = {"_p_faiss__IndexIVFAdditiveQuantizer", "faiss::IndexIVFAdditiveQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIVFFlat = {"_p_faiss__IndexIVFFlat", "faiss::IndexIVFFlat *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIVFFlatDedup = {"_p_faiss__IndexIVFFlatDedup", "faiss::IndexIVFFlatDedup *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIVFLocalSearchQuantizer = {"_p_faiss__IndexIVFLocalSearchQuantizer", "faiss::IndexIVFLocalSearchQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIVFPQ = {"_p_faiss__IndexIVFPQ", "faiss::IndexIVFPQ *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIVFPQFastScan = {"_p_faiss__IndexIVFPQFastScan", "faiss::IndexIVFPQFastScan *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIVFPQR = {"_p_faiss__IndexIVFPQR", "faiss::IndexIVFPQR *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIVFPQStats = {"_p_faiss__IndexIVFPQStats", "faiss::IndexIVFPQStats *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIVFResidualQuantizer = {"_p_faiss__IndexIVFResidualQuantizer", "faiss::IndexIVFResidualQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIVFScalarQuantizer = {"_p_faiss__IndexIVFScalarQuantizer", "faiss::IndexIVFScalarQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIVFSpectralHash = {"_p_faiss__IndexIVFSpectralHash", "faiss::IndexIVFSpectralHash *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexIVFStats = {"_p_faiss__IndexIVFStats", "faiss::IndexIVFStats *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexLSH = {"_p_faiss__IndexLSH", "faiss::IndexLSH *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexLattice = {"_p_faiss__IndexLattice", "faiss::IndexLattice *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexLocalSearchQuantizer = {"_p_faiss__IndexLocalSearchQuantizer", "faiss::IndexLocalSearchQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexNNDescent = {"_p_faiss__IndexNNDescent", "faiss::IndexNNDescent *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexNNDescentFlat = {"_p_faiss__IndexNNDescentFlat", "faiss::IndexNNDescentFlat *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexNSG = {"_p_faiss__IndexNSG", "faiss::IndexNSG *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexNSGFlat = {"_p_faiss__IndexNSGFlat", "faiss::IndexNSGFlat *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexPQ = {"_p_faiss__IndexPQ", "faiss::IndexPQ *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexPQFastScan = {"_p_faiss__IndexPQFastScan", "faiss::IndexPQFastScan *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexPQStats = {"_p_faiss__IndexPQStats", "faiss::IndexPQStats *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexPreTransform = {"_p_faiss__IndexPreTransform", "faiss::IndexPreTransform *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexRefine = {"_p_faiss__IndexRefine", "faiss::IndexRefine *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexRefineFlat = {"_p_faiss__IndexRefineFlat", "faiss::IndexRefineFlat *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t = {"_p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t", "faiss::IndexBinaryReplicas *|faiss::IndexReplicasTemplate< faiss::IndexBinary > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexReplicasTemplateT_faiss__Index_t = {"_p_faiss__IndexReplicasTemplateT_faiss__Index_t", "faiss::IndexReplicas *|faiss::IndexReplicasTemplate< faiss::Index > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexResidualQuantizer = {"_p_faiss__IndexResidualQuantizer", "faiss::IndexResidualQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexScalarQuantizer = {"_p_faiss__IndexScalarQuantizer", "faiss::IndexScalarQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t = {"_p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t", "faiss::IndexBinaryShards *|faiss::IndexShardsTemplate< faiss::IndexBinary > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexShardsTemplateT_faiss__Index_t = {"_p_faiss__IndexShardsTemplateT_faiss__Index_t", "faiss::IndexShards *|faiss::IndexShardsTemplate< faiss::Index > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IndexSplitVectors = {"_p_faiss__IndexSplitVectors", "faiss::IndexSplitVectors *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__InterruptCallback = {"_p_faiss__InterruptCallback", "faiss::InterruptCallback *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__IntersectionCriterion = {"_p_faiss__IntersectionCriterion", "faiss::IntersectionCriterion *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__InvertedListScanner = {"_p_faiss__InvertedListScanner", "faiss::InvertedListScanner *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__InvertedLists = {"_p_faiss__InvertedLists", "faiss::InvertedLists *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__InvertedListsIOHook = {"_p_faiss__InvertedListsIOHook", "faiss::InvertedListsIOHook *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__BlockInvertedListsIOHook = {"_p_faiss__BlockInvertedListsIOHook", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_faiss__OnDiskInvertedListsIOHook = {"_p_faiss__OnDiskInvertedListsIOHook", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_faiss__Level1Quantizer = {"_p_faiss__Level1Quantizer", "faiss::Level1Quantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__LinearTransform = {"_p_faiss__LinearTransform", "faiss::LinearTransform *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__LocalSearchCoarseQuantizer = {"_p_faiss__LocalSearchCoarseQuantizer", "faiss::LocalSearchCoarseQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__LocalSearchQuantizer = {"_p_faiss__LocalSearchQuantizer", "faiss::LocalSearchQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__LockLevels = {"_p_faiss__LockLevels", "faiss::LockLevels *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__MaskedInvertedLists = {"_p_faiss__MaskedInvertedLists", "faiss::MaskedInvertedLists *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__MatrixStats = {"_p_faiss__MatrixStats", "faiss::MatrixStats *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__MultiIndexQuantizer = {"_p_faiss__MultiIndexQuantizer", "faiss::MultiIndexQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__MultiIndexQuantizer2 = {"_p_faiss__MultiIndexQuantizer2", "faiss::MultiIndexQuantizer2 *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__NNDescent = {"_p_faiss__NNDescent", "faiss::NNDescent *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__NSG = {"_p_faiss__NSG", "faiss::NSG *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__NormalizationTransform = {"_p_faiss__NormalizationTransform", "faiss::NormalizationTransform *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__OPQMatrix = {"_p_faiss__OPQMatrix", "faiss::OPQMatrix *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__OnDiskInvertedLists = {"_p_faiss__OnDiskInvertedLists", "faiss::OnDiskInvertedLists *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__OnDiskInvertedLists__OngoingPrefetch = {"_p_faiss__OnDiskInvertedLists__OngoingPrefetch", "faiss::OnDiskInvertedLists::OngoingPrefetch *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__OnDiskOneList = {"_p_faiss__OnDiskOneList", "faiss::OnDiskOneList *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__OneRecallAtRCriterion = {"_p_faiss__OneRecallAtRCriterion", "faiss::OneRecallAtRCriterion *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__OperatingPoint = {"_p_faiss__OperatingPoint", "faiss::OperatingPoint *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__OperatingPoints = {"_p_faiss__OperatingPoints", "faiss::OperatingPoints *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__PCAMatrix = {"_p_faiss__PCAMatrix", "faiss::PCAMatrix *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__PQDecoder16 = {"_p_faiss__PQDecoder16", "faiss::PQDecoder16 *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__PQDecoder8 = {"_p_faiss__PQDecoder8", "faiss::PQDecoder8 *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__PQDecoderGeneric = {"_p_faiss__PQDecoderGeneric", "faiss::PQDecoderGeneric *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__PQEncoder16 = {"_p_faiss__PQEncoder16", "faiss::PQEncoder16 *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__PQEncoder8 = {"_p_faiss__PQEncoder8", "faiss::PQEncoder8 *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__PQEncoderGeneric = {"_p_faiss__PQEncoderGeneric", "faiss::PQEncoderGeneric *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ParameterRange = {"_p_faiss__ParameterRange", "faiss::ParameterRange *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ParameterSpace = {"_p_faiss__ParameterSpace", "faiss::ParameterSpace *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__PartitionStats = {"_p_faiss__PartitionStats", "faiss::PartitionStats *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__PermutationObjective = {"_p_faiss__PermutationObjective", "faiss::PermutationObjective *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__PolysemousTraining = {"_p_faiss__PolysemousTraining", "faiss::PolysemousTraining *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ProductQuantizer = {"_p_faiss__ProductQuantizer", "faiss::ProductQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ProgressiveDimClustering = {"_p_faiss__ProgressiveDimClustering", "faiss::ProgressiveDimClustering *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ProgressiveDimClusteringParameters = {"_p_faiss__ProgressiveDimClusteringParameters", "faiss::ProgressiveDimClusteringParameters *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ProgressiveDimIndexFactory = {"_p_faiss__ProgressiveDimIndexFactory", "faiss::ProgressiveDimIndexFactory *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__RandomGenerator = {"_p_faiss__RandomGenerator", "faiss::RandomGenerator *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__RandomRotationMatrix = {"_p_faiss__RandomRotationMatrix", "faiss::RandomRotationMatrix *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__RangeQueryResult = {"_p_faiss__RangeQueryResult", "faiss::RangeQueryResult *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__RangeSearchPartialResult = {"_p_faiss__RangeSearchPartialResult", "faiss::RangeSearchPartialResult *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__RangeSearchResult = {"_p_faiss__RangeSearchResult", "faiss::RangeSearchResult *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ReadOnlyInvertedLists = {"_p_faiss__ReadOnlyInvertedLists", "faiss::ReadOnlyInvertedLists *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ReconstructFromNeighbors = {"_p_faiss__ReconstructFromNeighbors", "faiss::ReconstructFromNeighbors *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__RemapDimensionsTransform = {"_p_faiss__RemapDimensionsTransform", "faiss::RemapDimensionsTransform *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__Repeat = {"_p_faiss__Repeat", "faiss::Repeat *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__Repeats = {"_p_faiss__Repeats", "faiss::Repeats *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ReproduceDistancesObjective = {"_p_faiss__ReproduceDistancesObjective", "faiss::ReproduceDistancesObjective *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ResidualCoarseQuantizer = {"_p_faiss__ResidualCoarseQuantizer", "faiss::ResidualCoarseQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ResidualQuantizer = {"_p_faiss__ResidualQuantizer", "faiss::ResidualQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ScalarQuantizer = {"_p_faiss__ScalarQuantizer", "faiss::ScalarQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ScalarQuantizer__Quantizer = {"_p_faiss__ScalarQuantizer__Quantizer", "faiss::ScalarQuantizer::Quantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ScalarQuantizer__SQDistanceComputer = {"_p_faiss__ScalarQuantizer__SQDistanceComputer", "faiss::ScalarQuantizer::SQDistanceComputer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__SimulatedAnnealingOptimizer = {"_p_faiss__SimulatedAnnealingOptimizer", "faiss::SimulatedAnnealingOptimizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__SimulatedAnnealingParameters = {"_p_faiss__SimulatedAnnealingParameters", "faiss::SimulatedAnnealingParameters *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__SliceInvertedLists = {"_p_faiss__SliceInvertedLists", "faiss::SliceInvertedLists *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__StopWordsInvertedLists = {"_p_faiss__StopWordsInvertedLists", "faiss::StopWordsInvertedLists *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ThreadedIndexT_faiss__IndexBinary_t = {"_p_faiss__ThreadedIndexT_faiss__IndexBinary_t", "faiss::ThreadedIndex< faiss::IndexBinary > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ThreadedIndexT_faiss__Index_t = {"_p_faiss__ThreadedIndexT_faiss__Index_t", "faiss::ThreadedIndex< faiss::Index > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__VStackInvertedLists = {"_p_faiss__VStackInvertedLists", "faiss::VStackInvertedLists *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__VectorIOReader = {"_p_faiss__VectorIOReader", "faiss::VectorIOReader *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__VectorIOWriter = {"_p_faiss__VectorIOWriter", "faiss::VectorIOWriter *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__VectorTransform = {"_p_faiss__VectorTransform", "faiss::VectorTransform *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__VisitedTable = {"_p_faiss__VisitedTable", "faiss::VisitedTable *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ZnSphereCodec = {"_p_faiss__ZnSphereCodec", "faiss::ZnSphereCodec *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ZnSphereCodecAlt = {"_p_faiss__ZnSphereCodecAlt", "faiss::ZnSphereCodecAlt *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ZnSphereCodecRec = {"_p_faiss__ZnSphereCodecRec", "faiss::ZnSphereCodecRec *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ZnSphereSearch = {"_p_faiss__ZnSphereSearch", "faiss::ZnSphereSearch *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__AllocInfo = {"_p_faiss__gpu__AllocInfo", "faiss::gpu::AllocInfo *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__AllocRequest = {"_p_faiss__gpu__AllocRequest", "faiss::gpu::AllocRequest *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__FlatIndex = {"_p_faiss__gpu__FlatIndex", "faiss::gpu::FlatIndex *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuClonerOptions = {"_p_faiss__gpu__GpuClonerOptions", "faiss::gpu::GpuClonerOptions *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuDistanceParams = {"_p_faiss__gpu__GpuDistanceParams", "faiss::gpu::GpuDistanceParams *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIcmEncoder = {"_p_faiss__gpu__GpuIcmEncoder", "faiss::gpu::GpuIcmEncoder *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIcmEncoderFactory = {"_p_faiss__gpu__GpuIcmEncoderFactory", "faiss::gpu::GpuIcmEncoderFactory *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndex = {"_p_faiss__gpu__GpuIndex", "faiss::gpu::GpuIndex *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexBinaryFlat = {"_p_faiss__gpu__GpuIndexBinaryFlat", "faiss::gpu::GpuIndexBinaryFlat *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexBinaryFlatConfig = {"_p_faiss__gpu__GpuIndexBinaryFlatConfig", "faiss::gpu::GpuIndexBinaryFlatConfig *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexConfig = {"_p_faiss__gpu__GpuIndexConfig", "faiss::gpu::GpuIndexConfig *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexFlat = {"_p_faiss__gpu__GpuIndexFlat", "faiss::gpu::GpuIndexFlat *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexFlatConfig = {"_p_faiss__gpu__GpuIndexFlatConfig", "faiss::gpu::GpuIndexFlatConfig *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexFlatIP = {"_p_faiss__gpu__GpuIndexFlatIP", "faiss::gpu::GpuIndexFlatIP *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexFlatL2 = {"_p_faiss__gpu__GpuIndexFlatL2", "faiss::gpu::GpuIndexFlatL2 *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexIVF = {"_p_faiss__gpu__GpuIndexIVF", "faiss::gpu::GpuIndexIVF *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexIVFConfig = {"_p_faiss__gpu__GpuIndexIVFConfig", "faiss::gpu::GpuIndexIVFConfig *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexIVFFlat = {"_p_faiss__gpu__GpuIndexIVFFlat", "faiss::gpu::GpuIndexIVFFlat *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexIVFFlatConfig = {"_p_faiss__gpu__GpuIndexIVFFlatConfig", "faiss::gpu::GpuIndexIVFFlatConfig *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexIVFPQ = {"_p_faiss__gpu__GpuIndexIVFPQ", "faiss::gpu::GpuIndexIVFPQ *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexIVFPQConfig = {"_p_faiss__gpu__GpuIndexIVFPQConfig", "faiss::gpu::GpuIndexIVFPQConfig *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexIVFScalarQuantizer = {"_p_faiss__gpu__GpuIndexIVFScalarQuantizer", "faiss::gpu::GpuIndexIVFScalarQuantizer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig = {"_p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig", "faiss::gpu::GpuIndexIVFScalarQuantizerConfig *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuMultipleClonerOptions = {"_p_faiss__gpu__GpuMultipleClonerOptions", "faiss::gpu::GpuMultipleClonerOptions *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuParameterSpace = {"_p_faiss__gpu__GpuParameterSpace", "faiss::gpu::GpuParameterSpace *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuProgressiveDimIndexFactory = {"_p_faiss__gpu__GpuProgressiveDimIndexFactory", "faiss::gpu::GpuProgressiveDimIndexFactory *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuResources = {"_p_faiss__gpu__GpuResources", "faiss::gpu::GpuResources *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__GpuResourcesProvider = {"_p_faiss__gpu__GpuResourcesProvider", "faiss::gpu::GpuResourcesProvider *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__StandardGpuResources = {"_p_faiss__gpu__StandardGpuResources", "faiss::gpu::StandardGpuResources *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__StandardGpuResourcesImpl = {"_p_faiss__gpu__StandardGpuResourcesImpl", "faiss::gpu::StandardGpuResourcesImpl *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__ToCPUCloner = {"_p_faiss__gpu__ToCPUCloner", "faiss::gpu::ToCPUCloner *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__ToGpuCloner = {"_p_faiss__gpu__ToGpuCloner", "faiss::gpu::ToGpuCloner *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__gpu__ToGpuClonerMultiple = {"_p_faiss__gpu__ToGpuClonerMultiple", "faiss::gpu::ToGpuClonerMultiple *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__ivflib__SlidingIndexWindow = {"_p_faiss__ivflib__SlidingIndexWindow", "faiss::ivflib::SlidingIndexWindow *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__lsq__IcmEncoder = {"_p_faiss__lsq__IcmEncoder", "faiss::lsq::IcmEncoder *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__lsq__IcmEncoderFactory = {"_p_faiss__lsq__IcmEncoderFactory", "faiss::lsq::IcmEncoderFactory *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__lsq__LSQTimer = {"_p_faiss__lsq__LSQTimer", "faiss::lsq::LSQTimer *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__lsq__LSQTimerScope = {"_p_faiss__lsq__LSQTimerScope", "faiss::lsq::LSQTimerScope *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__nndescent__Neighbor = {"_p_faiss__nndescent__Neighbor", "faiss::nndescent::Neighbor *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__nndescent__Nhood = {"_p_faiss__nndescent__Nhood", "faiss::nndescent::Nhood *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__nsg__GraphT_faiss__Node_t = {"_p_faiss__nsg__GraphT_faiss__Node_t", "faiss::nsg::Graph< faiss::Node > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_faiss__nsg__GraphT_long_t = {"_p_faiss__nsg__GraphT_long_t", "faiss::nsg::Graph< long > *|faiss::nsg::Graph< faiss::NSG::idx_t > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_first_type = {"_p_first_type", "first_type *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_float = {"_p_float", "faiss::IndexShardsTemplate< faiss::Index >::distance_t *|faiss::IndexIDMap2Template< faiss::Index >::component_t *|faiss::IndexShardsTemplate< faiss::Index >::component_t *|float *|faiss::IndexReplicasTemplate< faiss::Index >::distance_t *|faiss::HeapArray< faiss::CMax< float,long > >::T *|faiss::HeapArray< faiss::CMin< float,long > >::T *|faiss::CMin< float,int64_t >::T *|faiss::CMax< float,int64_t >::T *|faiss::IndexIDMapTemplate< faiss::Index >::component_t *|faiss::IndexIDMapTemplate< faiss::Index >::distance_t *|faiss::IndexReplicasTemplate< faiss::Index >::component_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_hipblasHandle_t = {"_p_hipblasHandle_t", "hipblasHandle_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_idx_t = {"_p_idx_t", "idx_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_ihipStream_t = {"_p_ihipStream_t", "ihipStream_t *|hipStream_t", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_int = {"_p_int", "faiss::IndexShardsTemplate< faiss::IndexBinary >::distance_t *|int *|int_least32_t *|int32_t *|faiss::IndexIDMapTemplate< faiss::IndexBinary >::distance_t *|faiss::IndexReplicasTemplate< faiss::IndexBinary >::distance_t *|hamdis_t *|faiss::HeapArray< faiss::CMin< int,long > >::T *|faiss::HeapArray< faiss::CMax< int,long > >::T *|faiss::IndexHNSW::storage_idx_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_key_type = {"_p_key_type", "key_type *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_long = {"_p_long", "intptr_t *|faiss::IndexReplicasTemplate< faiss::IndexBinary >::idx_t *|faiss::HeapArray< faiss::CMin< float,long > >::TI *|faiss::HeapArray< faiss::CMax< float,long > >::TI *|faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t *|faiss::IndexShardsTemplate< faiss::IndexBinary >::idx_t *|faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t *|faiss::IndexReplicasTemplate< faiss::Index >::idx_t *|faiss::IndexIDMap2Template< faiss::Index >::idx_t *|faiss::IndexShardsTemplate< faiss::Index >::idx_t *|int_fast32_t *|faiss::HeapArray< faiss::CMin< int,long > >::TI *|faiss::HeapArray< faiss::CMax< int,long > >::TI *|faiss::CMin< float,int64_t >::TI *|faiss::CMax< float,int64_t >::TI *|faiss::AutoTuneCriterion::idx_t *|faiss::BufferList::idx_t *|faiss::IDSelector::idx_t *|faiss::RangeSearchResult::idx_t *|faiss::DirectMap::idx_t *|faiss::InvertedLists::idx_t *|faiss::AdditiveQuantizer::idx_t *|faiss::Index::idx_t *|faiss::DirectMapAdd::idx_t *|faiss::ivflib::idx_t *|faiss::HNSW::idx_t *|faiss::ReconstructFromNeighbors::idx_t *|faiss::NNDescent::idx_t *|faiss::IndexNNDescent::idx_t *|faiss::NSG::idx_t *|faiss::IndexBinary::idx_t *|faiss::IndexIDMapTemplate< faiss::Index >::idx_t *|long *|int64_t *|intmax_t *|int_least64_t *|int_fast64_t *|int_fast16_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_mapped_type = {"_p_mapped_type", "mapped_type *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_omp_lock_t = {"_p_omp_lock_t", "omp_lock_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_p_faiss__Index = {"_p_p_faiss__Index", "faiss::Index **", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexPQ = {"_p_p_faiss__IndexPQ", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexRefine = {"_p_p_faiss__IndexRefine", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexIVFFlatDedup = {"_p_p_faiss__IndexIVFFlatDedup", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexPQFastScan = {"_p_p_faiss__IndexPQFastScan", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexIVFPQFastScan = {"_p_p_faiss__IndexIVFPQFastScan", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexPreTransform = {"_p_p_faiss__IndexPreTransform", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexNSGFlat = {"_p_p_faiss__IndexNSGFlat", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexSplitVectors = {"_p_p_faiss__IndexSplitVectors", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexIVFFlat = {"_p_p_faiss__IndexIVFFlat", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__gpu__GpuIndexIVFFlat = {"_p_p_faiss__gpu__GpuIndexIVFFlat", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexIVFAdditiveQuantizer = {"_p_p_faiss__IndexIVFAdditiveQuantizer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexIVFResidualQuantizer = {"_p_p_faiss__IndexIVFResidualQuantizer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexIVFLocalSearchQuantizer = {"_p_p_faiss__IndexIVFLocalSearchQuantizer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexIVFScalarQuantizer = {"_p_p_faiss__IndexIVFScalarQuantizer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexScalarQuantizer = {"_p_p_faiss__IndexScalarQuantizer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__LocalSearchCoarseQuantizer = {"_p_p_faiss__LocalSearchCoarseQuantizer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__ResidualCoarseQuantizer = {"_p_p_faiss__ResidualCoarseQuantizer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__AdditiveCoarseQuantizer = {"_p_p_faiss__AdditiveCoarseQuantizer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexLocalSearchQuantizer = {"_p_p_faiss__IndexLocalSearchQuantizer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__MultiIndexQuantizer = {"_p_p_faiss__MultiIndexQuantizer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__gpu__GpuIndexIVFScalarQuantizer = {"_p_p_faiss__gpu__GpuIndexIVFScalarQuantizer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexResidualQuantizer = {"_p_p_faiss__IndexResidualQuantizer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexAdditiveQuantizer = {"_p_p_faiss__IndexAdditiveQuantizer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexRefineFlat = {"_p_p_faiss__IndexRefineFlat", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexIVFPQ = {"_p_p_faiss__IndexIVFPQ", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__gpu__GpuIndexIVFPQ = {"_p_p_faiss__gpu__GpuIndexIVFPQ", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexLSH = {"_p_p_faiss__IndexLSH", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexHNSWSQ = {"_p_p_faiss__IndexHNSWSQ", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__gpu__GpuIndex = {"_p_p_faiss__gpu__GpuIndex", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexHNSW2Level = {"_p_p_faiss__IndexHNSW2Level", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__Index2Layer = {"_p_p_faiss__Index2Layer", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexFlatL2 = {"_p_p_faiss__IndexFlatL2", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__gpu__GpuIndexFlatL2 = {"_p_p_faiss__gpu__GpuIndexFlatL2", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexHNSWFlat = {"_p_p_faiss__IndexHNSWFlat", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexIVFPQR = {"_p_p_faiss__IndexIVFPQR", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexFlat1D = {"_p_p_faiss__IndexFlat1D", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexNNDescentFlat = {"_p_p_faiss__IndexNNDescentFlat", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexFlat = {"_p_p_faiss__IndexFlat", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexFlatIP = {"_p_p_faiss__IndexFlatIP", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexNSG = {"_p_p_faiss__IndexNSG", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__gpu__GpuIndexFlat = {"_p_p_faiss__gpu__GpuIndexFlat", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__gpu__GpuIndexFlatIP = {"_p_p_faiss__gpu__GpuIndexFlatIP", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexFlatCodes = {"_p_p_faiss__IndexFlatCodes", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexNNDescent = {"_p_p_faiss__IndexNNDescent", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexHNSW = {"_p_p_faiss__IndexHNSW", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexHNSWPQ = {"_p_p_faiss__IndexHNSWPQ", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexLattice = {"_p_p_faiss__IndexLattice", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexIVFSpectralHash = {"_p_p_faiss__IndexIVFSpectralHash", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexIVF = {"_p_p_faiss__IndexIVF", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__gpu__GpuIndexIVF = {"_p_p_faiss__gpu__GpuIndexIVF", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__MultiIndexQuantizer2 = {"_p_p_faiss__MultiIndexQuantizer2", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__ThreadedIndexT_faiss__Index_t = {"_p_p_faiss__ThreadedIndexT_faiss__Index_t", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexShardsTemplateT_faiss__Index_t = {"_p_p_faiss__IndexShardsTemplateT_faiss__Index_t", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexReplicasTemplateT_faiss__Index_t = {"_p_p_faiss__IndexReplicasTemplateT_faiss__Index_t", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexIDMapTemplateT_faiss__Index_t = {"_p_p_faiss__IndexIDMapTemplateT_faiss__Index_t", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__IndexIDMap2TemplateT_faiss__Index_t = {"_p_p_faiss__IndexIDMap2TemplateT_faiss__Index_t", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__InvertedLists = {"_p_p_faiss__InvertedLists", "faiss::InvertedLists **", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_p_faiss__ArrayInvertedLists = {"_p_p_faiss__ArrayInvertedLists", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__ReadOnlyInvertedLists = {"_p_p_faiss__ReadOnlyInvertedLists", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__HStackInvertedLists = {"_p_p_faiss__HStackInvertedLists", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__SliceInvertedLists = {"_p_p_faiss__SliceInvertedLists", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__VStackInvertedLists = {"_p_p_faiss__VStackInvertedLists", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__MaskedInvertedLists = {"_p_p_faiss__MaskedInvertedLists", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__StopWordsInvertedLists = {"_p_p_faiss__StopWordsInvertedLists", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__BlockInvertedLists = {"_p_p_faiss__BlockInvertedLists", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__OnDiskInvertedLists = {"_p_p_faiss__OnDiskInvertedLists", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__VectorTransform = {"_p_p_faiss__VectorTransform", "faiss::VectorTransform **", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_p_faiss__RandomRotationMatrix = {"_p_p_faiss__RandomRotationMatrix", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__PCAMatrix = {"_p_p_faiss__PCAMatrix", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__ITQMatrix = {"_p_p_faiss__ITQMatrix", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__OPQMatrix = {"_p_p_faiss__OPQMatrix", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__LinearTransform = {"_p_p_faiss__LinearTransform", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__ITQTransform = {"_p_p_faiss__ITQTransform", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__RemapDimensionsTransform = {"_p_p_faiss__RemapDimensionsTransform", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__NormalizationTransform = {"_p_p_faiss__NormalizationTransform", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__CenteringTransform = {"_p_p_faiss__CenteringTransform", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_p_faiss__gpu__GpuResourcesProvider = {"_p_p_faiss__gpu__GpuResourcesProvider", "faiss::gpu::GpuResourcesProvider **", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_p_faiss__gpu__StandardGpuResources = {"_p_p_faiss__gpu__StandardGpuResources", 0, 0, 0, 0, 0};
+static swig_type_info _swigt__p_second_type = {"_p_second_type", "second_type *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_short = {"_p_short", "short *|int_least16_t *|int16_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_signed_char = {"_p_signed_char", "signed char *|int_least8_t *|int_fast8_t *|int8_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_size_type = {"_p_size_type", "size_type *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__functionT_void_fint_faiss__IndexBinary_const_pF_t = {"_p_std__functionT_void_fint_faiss__IndexBinary_const_pF_t", "std::function< void (int,faiss::IndexBinary const *) > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__functionT_void_fint_faiss__IndexBinary_pF_t = {"_p_std__functionT_void_fint_faiss__IndexBinary_pF_t", "std::function< void (int,faiss::IndexBinary *) > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__functionT_void_fint_faiss__Index_const_pF_t = {"_p_std__functionT_void_fint_faiss__Index_const_pF_t", "std::function< void (int,faiss::Index const *) > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__functionT_void_fint_faiss__Index_pF_t = {"_p_std__functionT_void_fint_faiss__Index_pF_t", "std::function< void (int,faiss::Index *) > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__invalid_argument = {"_p_std__invalid_argument", "std::invalid_argument *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__listT_faiss__OnDiskInvertedLists__Slot_t = {"_p_std__listT_faiss__OnDiskInvertedLists__Slot_t", "std::list< faiss::OnDiskInvertedLists::Slot > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__mt19937 = {"_p_std__mt19937", "std::mt19937 *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__pairT_float_int_t = {"_p_std__pairT_float_int_t", "std::pair< float,int > *|faiss::HNSW::Node *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__pairT_void_p_unsigned_long_t = {"_p_std__pairT_void_p_unsigned_long_t", "std::pair< void *,unsigned long > *|std::pair< void *,size_t > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__priority_queueT_faiss__HNSW__NodeDistFarther_t = {"_p_std__priority_queueT_faiss__HNSW__NodeDistFarther_t", "std::priority_queue< faiss::HNSW::NodeDistFarther > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__priority_queueT_std__pairT_float_int_t_t = {"_p_std__priority_queueT_std__pairT_float_int_t_t", "std::priority_queue< std::pair< float,int > > *|std::priority_queue< faiss::HNSW::Node > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__shared_ptrT_faiss__gpu__GpuResources_t = {"_p_std__shared_ptrT_faiss__gpu__GpuResources_t", "std::shared_ptr< faiss::gpu::GpuResources > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t = {"_p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t", "std::shared_ptr< faiss::gpu::StandardGpuResourcesImpl > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__shared_ptrT_faiss__nsg__GraphT_int_t_t = {"_p_std__shared_ptrT_faiss__nsg__GraphT_int_t_t", "std::shared_ptr< faiss::nsg::Graph< int > > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__unordered_mapT_long_faiss__IndexBinaryHash__InvertedList_t = {"_p_std__unordered_mapT_long_faiss__IndexBinaryHash__InvertedList_t", "std::unordered_map< long,faiss::IndexBinaryHash::InvertedList > *|faiss::IndexBinaryHash::InvertedListMap *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__unordered_mapT_long_long_t = {"_p_std__unordered_mapT_long_long_t", "std::unordered_map< faiss::DirectMap::idx_t,faiss::DirectMap::idx_t > *|std::unordered_map< faiss::IndexIDMap2Template< faiss::Index >::idx_t,faiss::IndexIDMap2Template< faiss::Index >::idx_t > *|std::unordered_map< faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t,faiss::IndexIDMap2Template< faiss::IndexBinary >::idx_t > *|std::unordered_map< long,long > *|std::unordered_map< int64_t,int64_t > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__unordered_mapT_std__string_double_t = {"_p_std__unordered_mapT_std__string_double_t", "std::unordered_map< std::string,double > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__unordered_mapT_unsigned_long_faiss__MatrixStats__Occurrence_t = {"_p_std__unordered_mapT_unsigned_long_faiss__MatrixStats__Occurrence_t", "std::unordered_map< uint64_t,faiss::MatrixStats::Occurrence > *|std::unordered_map< unsigned long,faiss::MatrixStats::Occurrence > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__unordered_multimapT_long_long_t = {"_p_std__unordered_multimapT_long_long_t", "std::unordered_multimap< long,long > *|std::unordered_multimap< faiss::Index::idx_t,faiss::Index::idx_t > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_char_t = {"_p_std__vectorT_char_t", "std::vector< char > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_double_t = {"_p_std__vectorT_double_t", "std::vector< double > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__AlignedTableT_uint8_t_32_t_t = {"_p_std__vectorT_faiss__AlignedTableT_uint8_t_32_t_t", "std::vector< faiss::AlignedTable< unsigned char > > *|std::vector< faiss::AlignedTable< uint8_t > > *|std::vector< faiss::AlignedTable< uint8_t,32 > > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__BufferList__Buffer_t = {"_p_std__vectorT_faiss__BufferList__Buffer_t", "std::vector< faiss::BufferList::Buffer > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__ClusteringIterationStats_t = {"_p_std__vectorT_faiss__ClusteringIterationStats_t", "std::vector< faiss::ClusteringIterationStats > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__HNSW__NodeDistFarther_t = {"_p_std__vectorT_faiss__HNSW__NodeDistFarther_t", "std::vector< faiss::HNSW::NodeDistFarther > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__Index_p_t = {"_p_std__vectorT_faiss__Index_p_t", "std::vector< faiss::Index * > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__InvertedLists_const_p_t = {"_p_std__vectorT_faiss__InvertedLists_const_p_t", "std::vector< faiss::InvertedLists const * > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__InvertedLists_p_t = {"_p_std__vectorT_faiss__InvertedLists_p_t", "std::vector< faiss::InvertedLists * > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__MatrixStats__PerDimStats_t = {"_p_std__vectorT_faiss__MatrixStats__PerDimStats_t", "std::vector< faiss::MatrixStats::PerDimStats > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__Node_t = {"_p_std__vectorT_faiss__Node_t", "std::vector< faiss::Node > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__OnDiskOneList_t = {"_p_std__vectorT_faiss__OnDiskOneList_t", "std::vector< faiss::OnDiskOneList > *|std::vector< faiss::OnDiskInvertedLists::List > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__OperatingPoint_t = {"_p_std__vectorT_faiss__OperatingPoint_t", "std::vector< faiss::OperatingPoint > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__ParameterRange_t = {"_p_std__vectorT_faiss__ParameterRange_t", "std::vector< faiss::ParameterRange > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__RangeQueryResult_t = {"_p_std__vectorT_faiss__RangeQueryResult_t", "std::vector< faiss::RangeQueryResult > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__RangeSearchPartialResult_p_t = {"_p_std__vectorT_faiss__RangeSearchPartialResult_p_t", "std::vector< faiss::RangeSearchPartialResult * > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__Repeat_t = {"_p_std__vectorT_faiss__Repeat_t", "std::vector< faiss::Repeat > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__VectorTransform_p_t = {"_p_std__vectorT_faiss__VectorTransform_p_t", "std::vector< faiss::VectorTransform * > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__ZnSphereCodec__CodeSegment_t = {"_p_std__vectorT_faiss__ZnSphereCodec__CodeSegment_t", "std::vector< faiss::ZnSphereCodec::CodeSegment > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t = {"_p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t", "std::vector< faiss::gpu::GpuResourcesProvider * > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__gpu__ToGpuCloner_t = {"_p_std__vectorT_faiss__gpu__ToGpuCloner_t", "std::vector< faiss::gpu::ToGpuCloner > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__nndescent__Neighbor_t = {"_p_std__vectorT_faiss__nndescent__Neighbor_t", "std::vector< faiss::nndescent::Neighbor > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_faiss__nndescent__Nhood_t = {"_p_std__vectorT_faiss__nndescent__Nhood_t", "std::vector< faiss::nndescent::Nhood > *|faiss::NNDescent::KNNGraph *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_float_t = {"_p_std__vectorT_float_t", "std::vector< float > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_ihipStream_t_p_t = {"_p_std__vectorT_ihipStream_t_p_t", "std::vector< hipStream_t > *|std::vector< ihipStream_t * > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_int_t = {"_p_std__vectorT_int_t", "std::vector< int32_t > *|std::vector< faiss::HNSW::storage_idx_t > *|std::vector< int > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_long_t = {"_p_std__vectorT_long_t", "std::vector< long > *|std::vector< int64_t > *|std::vector< faiss::Index::idx_t > *|std::vector< faiss::InvertedLists::idx_t > *|std::vector< faiss::DirectMap::idx_t > *|std::vector< faiss::DirectMapAdd::idx_t > *|std::vector< faiss::AutoTuneCriterion::idx_t > *|std::vector< faiss::IndexIDMapTemplate< faiss::Index >::idx_t > *|std::vector< faiss::IndexIDMapTemplate< faiss::IndexBinary >::idx_t > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_omp_lock_t_t = {"_p_std__vectorT_omp_lock_t_t", "std::vector< omp_lock_t > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_short_t = {"_p_std__vectorT_short_t", "std::vector< short > *|std::vector< int16_t > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_signed_char_t = {"_p_std__vectorT_signed_char_t", "std::vector< signed char > *|std::vector< int8_t > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_std__mutex_t = {"_p_std__vectorT_std__mutex_t", "std::vector< std::mutex > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_std__unordered_mapT_long_std__vectorT_int64_t_t_t_t = {"_p_std__vectorT_std__unordered_mapT_long_std__vectorT_int64_t_t_t_t", "std::vector< std::unordered_map< long,std::vector< long > > > *|std::vector< std::unordered_map< long,std::vector< int64_t > > > *|std::vector< faiss::IndexBinaryMultiHash::Map > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_std__vectorT_float_t_t = {"_p_std__vectorT_std__vectorT_float_t_t", "std::vector< std::vector< float > > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_std__vectorT_int32_t_t_t = {"_p_std__vectorT_std__vectorT_int32_t_t_t", "std::vector< std::vector< int > > *|std::vector< std::vector< int32_t > > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_std__vectorT_int64_t_t_t = {"_p_std__vectorT_std__vectorT_int64_t_t_t", "std::vector< std::vector< long > > *|std::vector< std::vector< int64_t > > *|std::vector< std::vector< faiss::InvertedLists::idx_t > > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_std__vectorT_uint64_t_t_t = {"_p_std__vectorT_std__vectorT_uint64_t_t_t", "std::vector< std::vector< unsigned long > > *|std::vector< std::vector< size_t > > *|std::vector< std::vector< uint64_t > > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_std__vectorT_uint8_t_t_t = {"_p_std__vectorT_std__vectorT_uint8_t_t_t", "std::vector< std::vector< unsigned char > > *|std::vector< std::vector< uint8_t > > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_unsigned_char_t = {"_p_std__vectorT_unsigned_char_t", "std::vector< unsigned char > *|std::vector< uint8_t > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_unsigned_int_t = {"_p_std__vectorT_unsigned_int_t", "std::vector< uint32_t > *|std::vector< unsigned int > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_unsigned_long_t = {"_p_std__vectorT_unsigned_long_t", "std::vector< unsigned long > *|std::vector< size_t > *|std::vector< uint64_t > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_std__vectorT_unsigned_short_t = {"_p_std__vectorT_unsigned_short_t", "std::vector< unsigned short > *|std::vector< uint16_t > *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_storage_idx_t = {"_p_storage_idx_t", "storage_idx_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_swig__SwigPyIterator = {"_p_swig__SwigPyIterator", "swig::SwigPyIterator *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_unsigned_char = {"_p_unsigned_char", "faiss::IndexShardsTemplate< faiss::IndexBinary >::component_t *|faiss::IndexIDMap2Template< faiss::IndexBinary >::component_t *|unsigned char *|faiss::IndexIDMapTemplate< faiss::IndexBinary >::component_t *|faiss::IndexReplicasTemplate< faiss::IndexBinary >::component_t *|uint_least8_t *|uint_fast8_t *|uint8_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_unsigned_int = {"_p_unsigned_int", "uint_least32_t *|uint32_t *|unsigned int *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_unsigned_long = {"_p_unsigned_long", "uintptr_t *|uint_least64_t *|uint_fast32_t *|uint_fast64_t *|uint64_t *|size_t *|unsigned long *|uint_fast16_t *|uintmax_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_unsigned_short = {"_p_unsigned_short", "unsigned short *|uint_least16_t *|uint16_t *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_value_type = {"_p_value_type", "value_type *", 0, 0, (void*)0, 0};
+static swig_type_info _swigt__p_void = {"_p_void", "void *", 0, 0, (void*)0, 0};
+
+static swig_type_info *swig_type_initial[] = {
+  &_swigt__p_Crev,
+  &_swigt__p_FILE,
+  &_swigt__p_InvertedListMap,
+  &_swigt__p_KNNGraph,
+  &_swigt__p_List,
+  &_swigt__p_Map,
+  &_swigt__p_MapLong2Long,
+  &_swigt__p_Node,
+  &_swigt__p_PyCallbackIOReader,
+  &_swigt__p_PyCallbackIOWriter,
+  &_swigt__p_Search_type_t,
+  &_swigt__p_T,
+  &_swigt__p_TI,
+  &_swigt__p_Type,
+  &_swigt__p_allocator_type,
+  &_swigt__p_char,
+  &_swigt__p_component_t,
+  &_swigt__p_difference_type,
+  &_swigt__p_distance_t,
+  &_swigt__p_double,
+  &_swigt__p_faiss__AdditiveCoarseQuantizer,
+  &_swigt__p_faiss__AdditiveQuantizer,
+  &_swigt__p_faiss__AlignedTableT_float_32_t,
+  &_swigt__p_faiss__AlignedTableT_unsigned_char_32_t,
+  &_swigt__p_faiss__AlignedTableT_unsigned_short_32_t,
+  &_swigt__p_faiss__AlignedTableTightAllocT_float_32_t,
+  &_swigt__p_faiss__AlignedTableTightAllocT_unsigned_char_32_t,
+  &_swigt__p_faiss__AlignedTableTightAllocT_unsigned_short_32_t,
+  &_swigt__p_faiss__ArrayInvertedLists,
+  &_swigt__p_faiss__AutoTuneCriterion,
+  &_swigt__p_faiss__BinaryInvertedListScanner,
+  &_swigt__p_faiss__BitstringReader,
+  &_swigt__p_faiss__BitstringWriter,
+  &_swigt__p_faiss__BlockInvertedLists,
+  &_swigt__p_faiss__BlockInvertedListsIOHook,
+  &_swigt__p_faiss__BufferList,
+  &_swigt__p_faiss__BufferedIOReader,
+  &_swigt__p_faiss__BufferedIOWriter,
+  &_swigt__p_faiss__CenteringTransform,
+  &_swigt__p_faiss__Cloner,
+  &_swigt__p_faiss__Clustering,
+  &_swigt__p_faiss__Clustering1D,
+  &_swigt__p_faiss__ClusteringIterationStats,
+  &_swigt__p_faiss__ClusteringParameters,
+  &_swigt__p_faiss__DirectMap,
+  &_swigt__p_faiss__DirectMapAdd,
+  &_swigt__p_faiss__DistanceComputer,
+  &_swigt__p_faiss__EnumeratedVectors,
+  &_swigt__p_faiss__FastScanStats,
+  &_swigt__p_faiss__FileIOReader,
+  &_swigt__p_faiss__FileIOWriter,
+  &_swigt__p_faiss__HNSW,
+  &_swigt__p_faiss__HNSWStats,
+  &_swigt__p_faiss__HNSW__MinimaxHeap,
+  &_swigt__p_faiss__HStackInvertedLists,
+  &_swigt__p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t,
+  &_swigt__p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t,
+  &_swigt__p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t,
+  &_swigt__p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t,
+  &_swigt__p_faiss__IDSelector,
+  &_swigt__p_faiss__IDSelectorArray,
+  &_swigt__p_faiss__IDSelectorBatch,
+  &_swigt__p_faiss__IDSelectorRange,
+  &_swigt__p_faiss__IOReader,
+  &_swigt__p_faiss__IOWriter,
+  &_swigt__p_faiss__ITQMatrix,
+  &_swigt__p_faiss__ITQTransform,
+  &_swigt__p_faiss__IVFFastScanStats,
+  &_swigt__p_faiss__IVFPQSearchParameters,
+  &_swigt__p_faiss__IVFSearchParameters,
+  &_swigt__p_faiss__Index,
+  &_swigt__p_faiss__Index2Layer,
+  &_swigt__p_faiss__IndexAdditiveQuantizer,
+  &_swigt__p_faiss__IndexBinary,
+  &_swigt__p_faiss__IndexBinaryFlat,
+  &_swigt__p_faiss__IndexBinaryFromFloat,
+  &_swigt__p_faiss__IndexBinaryHNSW,
+  &_swigt__p_faiss__IndexBinaryHash,
+  &_swigt__p_faiss__IndexBinaryHashStats,
+  &_swigt__p_faiss__IndexBinaryIVF,
+  &_swigt__p_faiss__IndexBinaryMultiHash,
+  &_swigt__p_faiss__IndexFlat,
+  &_swigt__p_faiss__IndexFlat1D,
+  &_swigt__p_faiss__IndexFlatCodes,
+  &_swigt__p_faiss__IndexFlatIP,
+  &_swigt__p_faiss__IndexFlatL2,
+  &_swigt__p_faiss__IndexHNSW,
+  &_swigt__p_faiss__IndexHNSW2Level,
+  &_swigt__p_faiss__IndexHNSWFlat,
+  &_swigt__p_faiss__IndexHNSWPQ,
+  &_swigt__p_faiss__IndexHNSWSQ,
+  &_swigt__p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t,
+  &_swigt__p_faiss__IndexIDMap2TemplateT_faiss__Index_t,
+  &_swigt__p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t,
+  &_swigt__p_faiss__IndexIDMapTemplateT_faiss__Index_t,
+  &_swigt__p_faiss__IndexIVF,
+  &_swigt__p_faiss__IndexIVFAdditiveQuantizer,
+  &_swigt__p_faiss__IndexIVFFlat,
+  &_swigt__p_faiss__IndexIVFFlatDedup,
+  &_swigt__p_faiss__IndexIVFLocalSearchQuantizer,
+  &_swigt__p_faiss__IndexIVFPQ,
+  &_swigt__p_faiss__IndexIVFPQFastScan,
+  &_swigt__p_faiss__IndexIVFPQR,
+  &_swigt__p_faiss__IndexIVFPQStats,
+  &_swigt__p_faiss__IndexIVFResidualQuantizer,
+  &_swigt__p_faiss__IndexIVFScalarQuantizer,
+  &_swigt__p_faiss__IndexIVFSpectralHash,
+  &_swigt__p_faiss__IndexIVFStats,
+  &_swigt__p_faiss__IndexLSH,
+  &_swigt__p_faiss__IndexLattice,
+  &_swigt__p_faiss__IndexLocalSearchQuantizer,
+  &_swigt__p_faiss__IndexNNDescent,
+  &_swigt__p_faiss__IndexNNDescentFlat,
+  &_swigt__p_faiss__IndexNSG,
+  &_swigt__p_faiss__IndexNSGFlat,
+  &_swigt__p_faiss__IndexPQ,
+  &_swigt__p_faiss__IndexPQFastScan,
+  &_swigt__p_faiss__IndexPQStats,
+  &_swigt__p_faiss__IndexPreTransform,
+  &_swigt__p_faiss__IndexRefine,
+  &_swigt__p_faiss__IndexRefineFlat,
+  &_swigt__p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t,
+  &_swigt__p_faiss__IndexReplicasTemplateT_faiss__Index_t,
+  &_swigt__p_faiss__IndexResidualQuantizer,
+  &_swigt__p_faiss__IndexScalarQuantizer,
+  &_swigt__p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t,
+  &_swigt__p_faiss__IndexShardsTemplateT_faiss__Index_t,
+  &_swigt__p_faiss__IndexSplitVectors,
+  &_swigt__p_faiss__InterruptCallback,
+  &_swigt__p_faiss__IntersectionCriterion,
+  &_swigt__p_faiss__InvertedListScanner,
+  &_swigt__p_faiss__InvertedLists,
+  &_swigt__p_faiss__InvertedListsIOHook,
+  &_swigt__p_faiss__Level1Quantizer,
+  &_swigt__p_faiss__LinearTransform,
+  &_swigt__p_faiss__LocalSearchCoarseQuantizer,
+  &_swigt__p_faiss__LocalSearchQuantizer,
+  &_swigt__p_faiss__LockLevels,
+  &_swigt__p_faiss__MaskedInvertedLists,
+  &_swigt__p_faiss__MatrixStats,
+  &_swigt__p_faiss__MultiIndexQuantizer,
+  &_swigt__p_faiss__MultiIndexQuantizer2,
+  &_swigt__p_faiss__NNDescent,
+  &_swigt__p_faiss__NSG,
+  &_swigt__p_faiss__NormalizationTransform,
+  &_swigt__p_faiss__OPQMatrix,
+  &_swigt__p_faiss__OnDiskInvertedLists,
+  &_swigt__p_faiss__OnDiskInvertedListsIOHook,
+  &_swigt__p_faiss__OnDiskInvertedLists__OngoingPrefetch,
+  &_swigt__p_faiss__OnDiskOneList,
+  &_swigt__p_faiss__OneRecallAtRCriterion,
+  &_swigt__p_faiss__OperatingPoint,
+  &_swigt__p_faiss__OperatingPoints,
+  &_swigt__p_faiss__PCAMatrix,
+  &_swigt__p_faiss__PQDecoder16,
+  &_swigt__p_faiss__PQDecoder8,
+  &_swigt__p_faiss__PQDecoderGeneric,
+  &_swigt__p_faiss__PQEncoder16,
+  &_swigt__p_faiss__PQEncoder8,
+  &_swigt__p_faiss__PQEncoderGeneric,
+  &_swigt__p_faiss__ParameterRange,
+  &_swigt__p_faiss__ParameterSpace,
+  &_swigt__p_faiss__PartitionStats,
+  &_swigt__p_faiss__PermutationObjective,
+  &_swigt__p_faiss__PolysemousTraining,
+  &_swigt__p_faiss__ProductQuantizer,
+  &_swigt__p_faiss__ProgressiveDimClustering,
+  &_swigt__p_faiss__ProgressiveDimClusteringParameters,
+  &_swigt__p_faiss__ProgressiveDimIndexFactory,
+  &_swigt__p_faiss__RandomGenerator,
+  &_swigt__p_faiss__RandomRotationMatrix,
+  &_swigt__p_faiss__RangeQueryResult,
+  &_swigt__p_faiss__RangeSearchPartialResult,
+  &_swigt__p_faiss__RangeSearchResult,
+  &_swigt__p_faiss__ReadOnlyInvertedLists,
+  &_swigt__p_faiss__ReconstructFromNeighbors,
+  &_swigt__p_faiss__RemapDimensionsTransform,
+  &_swigt__p_faiss__Repeat,
+  &_swigt__p_faiss__Repeats,
+  &_swigt__p_faiss__ReproduceDistancesObjective,
+  &_swigt__p_faiss__ResidualCoarseQuantizer,
+  &_swigt__p_faiss__ResidualQuantizer,
+  &_swigt__p_faiss__ScalarQuantizer,
+  &_swigt__p_faiss__ScalarQuantizer__Quantizer,
+  &_swigt__p_faiss__ScalarQuantizer__SQDistanceComputer,
+  &_swigt__p_faiss__SimulatedAnnealingOptimizer,
+  &_swigt__p_faiss__SimulatedAnnealingParameters,
+  &_swigt__p_faiss__SliceInvertedLists,
+  &_swigt__p_faiss__StopWordsInvertedLists,
+  &_swigt__p_faiss__ThreadedIndexT_faiss__IndexBinary_t,
+  &_swigt__p_faiss__ThreadedIndexT_faiss__Index_t,
+  &_swigt__p_faiss__VStackInvertedLists,
+  &_swigt__p_faiss__VectorIOReader,
+  &_swigt__p_faiss__VectorIOWriter,
+  &_swigt__p_faiss__VectorTransform,
+  &_swigt__p_faiss__VisitedTable,
+  &_swigt__p_faiss__ZnSphereCodec,
+  &_swigt__p_faiss__ZnSphereCodecAlt,
+  &_swigt__p_faiss__ZnSphereCodecRec,
+  &_swigt__p_faiss__ZnSphereSearch,
+  &_swigt__p_faiss__gpu__AllocInfo,
+  &_swigt__p_faiss__gpu__AllocRequest,
+  &_swigt__p_faiss__gpu__FlatIndex,
+  &_swigt__p_faiss__gpu__GpuClonerOptions,
+  &_swigt__p_faiss__gpu__GpuDistanceParams,
+  &_swigt__p_faiss__gpu__GpuIcmEncoder,
+  &_swigt__p_faiss__gpu__GpuIcmEncoderFactory,
+  &_swigt__p_faiss__gpu__GpuIndex,
+  &_swigt__p_faiss__gpu__GpuIndexBinaryFlat,
+  &_swigt__p_faiss__gpu__GpuIndexBinaryFlatConfig,
+  &_swigt__p_faiss__gpu__GpuIndexConfig,
+  &_swigt__p_faiss__gpu__GpuIndexFlat,
+  &_swigt__p_faiss__gpu__GpuIndexFlatConfig,
+  &_swigt__p_faiss__gpu__GpuIndexFlatIP,
+  &_swigt__p_faiss__gpu__GpuIndexFlatL2,
+  &_swigt__p_faiss__gpu__GpuIndexIVF,
+  &_swigt__p_faiss__gpu__GpuIndexIVFConfig,
+  &_swigt__p_faiss__gpu__GpuIndexIVFFlat,
+  &_swigt__p_faiss__gpu__GpuIndexIVFFlatConfig,
+  &_swigt__p_faiss__gpu__GpuIndexIVFPQ,
+  &_swigt__p_faiss__gpu__GpuIndexIVFPQConfig,
+  &_swigt__p_faiss__gpu__GpuIndexIVFScalarQuantizer,
+  &_swigt__p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig,
+  &_swigt__p_faiss__gpu__GpuMultipleClonerOptions,
+  &_swigt__p_faiss__gpu__GpuParameterSpace,
+  &_swigt__p_faiss__gpu__GpuProgressiveDimIndexFactory,
+  &_swigt__p_faiss__gpu__GpuResources,
+  &_swigt__p_faiss__gpu__GpuResourcesProvider,
+  &_swigt__p_faiss__gpu__StandardGpuResources,
+  &_swigt__p_faiss__gpu__StandardGpuResourcesImpl,
+  &_swigt__p_faiss__gpu__ToCPUCloner,
+  &_swigt__p_faiss__gpu__ToGpuCloner,
+  &_swigt__p_faiss__gpu__ToGpuClonerMultiple,
+  &_swigt__p_faiss__ivflib__SlidingIndexWindow,
+  &_swigt__p_faiss__lsq__IcmEncoder,
+  &_swigt__p_faiss__lsq__IcmEncoderFactory,
+  &_swigt__p_faiss__lsq__LSQTimer,
+  &_swigt__p_faiss__lsq__LSQTimerScope,
+  &_swigt__p_faiss__nndescent__Neighbor,
+  &_swigt__p_faiss__nndescent__Nhood,
+  &_swigt__p_faiss__nsg__GraphT_faiss__Node_t,
+  &_swigt__p_faiss__nsg__GraphT_long_t,
+  &_swigt__p_first_type,
+  &_swigt__p_float,
+  &_swigt__p_hipblasHandle_t,
+  &_swigt__p_idx_t,
+  &_swigt__p_ihipStream_t,
+  &_swigt__p_int,
+  &_swigt__p_key_type,
+  &_swigt__p_long,
+  &_swigt__p_mapped_type,
+  &_swigt__p_omp_lock_t,
+  &_swigt__p_p_faiss__AdditiveCoarseQuantizer,
+  &_swigt__p_p_faiss__ArrayInvertedLists,
+  &_swigt__p_p_faiss__BlockInvertedLists,
+  &_swigt__p_p_faiss__CenteringTransform,
+  &_swigt__p_p_faiss__HStackInvertedLists,
+  &_swigt__p_p_faiss__ITQMatrix,
+  &_swigt__p_p_faiss__ITQTransform,
+  &_swigt__p_p_faiss__Index,
+  &_swigt__p_p_faiss__Index2Layer,
+  &_swigt__p_p_faiss__IndexAdditiveQuantizer,
+  &_swigt__p_p_faiss__IndexFlat,
+  &_swigt__p_p_faiss__IndexFlat1D,
+  &_swigt__p_p_faiss__IndexFlatCodes,
+  &_swigt__p_p_faiss__IndexFlatIP,
+  &_swigt__p_p_faiss__IndexFlatL2,
+  &_swigt__p_p_faiss__IndexHNSW,
+  &_swigt__p_p_faiss__IndexHNSW2Level,
+  &_swigt__p_p_faiss__IndexHNSWFlat,
+  &_swigt__p_p_faiss__IndexHNSWPQ,
+  &_swigt__p_p_faiss__IndexHNSWSQ,
+  &_swigt__p_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,
+  &_swigt__p_p_faiss__IndexIDMapTemplateT_faiss__Index_t,
+  &_swigt__p_p_faiss__IndexIVF,
+  &_swigt__p_p_faiss__IndexIVFAdditiveQuantizer,
+  &_swigt__p_p_faiss__IndexIVFFlat,
+  &_swigt__p_p_faiss__IndexIVFFlatDedup,
+  &_swigt__p_p_faiss__IndexIVFLocalSearchQuantizer,
+  &_swigt__p_p_faiss__IndexIVFPQ,
+  &_swigt__p_p_faiss__IndexIVFPQFastScan,
+  &_swigt__p_p_faiss__IndexIVFPQR,
+  &_swigt__p_p_faiss__IndexIVFResidualQuantizer,
+  &_swigt__p_p_faiss__IndexIVFScalarQuantizer,
+  &_swigt__p_p_faiss__IndexIVFSpectralHash,
+  &_swigt__p_p_faiss__IndexLSH,
+  &_swigt__p_p_faiss__IndexLattice,
+  &_swigt__p_p_faiss__IndexLocalSearchQuantizer,
+  &_swigt__p_p_faiss__IndexNNDescent,
+  &_swigt__p_p_faiss__IndexNNDescentFlat,
+  &_swigt__p_p_faiss__IndexNSG,
+  &_swigt__p_p_faiss__IndexNSGFlat,
+  &_swigt__p_p_faiss__IndexPQ,
+  &_swigt__p_p_faiss__IndexPQFastScan,
+  &_swigt__p_p_faiss__IndexPreTransform,
+  &_swigt__p_p_faiss__IndexRefine,
+  &_swigt__p_p_faiss__IndexRefineFlat,
+  &_swigt__p_p_faiss__IndexReplicasTemplateT_faiss__Index_t,
+  &_swigt__p_p_faiss__IndexResidualQuantizer,
+  &_swigt__p_p_faiss__IndexScalarQuantizer,
+  &_swigt__p_p_faiss__IndexShardsTemplateT_faiss__Index_t,
+  &_swigt__p_p_faiss__IndexSplitVectors,
+  &_swigt__p_p_faiss__InvertedLists,
+  &_swigt__p_p_faiss__LinearTransform,
+  &_swigt__p_p_faiss__LocalSearchCoarseQuantizer,
+  &_swigt__p_p_faiss__MaskedInvertedLists,
+  &_swigt__p_p_faiss__MultiIndexQuantizer,
+  &_swigt__p_p_faiss__MultiIndexQuantizer2,
+  &_swigt__p_p_faiss__NormalizationTransform,
+  &_swigt__p_p_faiss__OPQMatrix,
+  &_swigt__p_p_faiss__OnDiskInvertedLists,
+  &_swigt__p_p_faiss__PCAMatrix,
+  &_swigt__p_p_faiss__RandomRotationMatrix,
+  &_swigt__p_p_faiss__ReadOnlyInvertedLists,
+  &_swigt__p_p_faiss__RemapDimensionsTransform,
+  &_swigt__p_p_faiss__ResidualCoarseQuantizer,
+  &_swigt__p_p_faiss__SliceInvertedLists,
+  &_swigt__p_p_faiss__StopWordsInvertedLists,
+  &_swigt__p_p_faiss__ThreadedIndexT_faiss__Index_t,
+  &_swigt__p_p_faiss__VStackInvertedLists,
+  &_swigt__p_p_faiss__VectorTransform,
+  &_swigt__p_p_faiss__gpu__GpuIndex,
+  &_swigt__p_p_faiss__gpu__GpuIndexFlat,
+  &_swigt__p_p_faiss__gpu__GpuIndexFlatIP,
+  &_swigt__p_p_faiss__gpu__GpuIndexFlatL2,
+  &_swigt__p_p_faiss__gpu__GpuIndexIVF,
+  &_swigt__p_p_faiss__gpu__GpuIndexIVFFlat,
+  &_swigt__p_p_faiss__gpu__GpuIndexIVFPQ,
+  &_swigt__p_p_faiss__gpu__GpuIndexIVFScalarQuantizer,
+  &_swigt__p_p_faiss__gpu__GpuResourcesProvider,
+  &_swigt__p_p_faiss__gpu__StandardGpuResources,
+  &_swigt__p_second_type,
+  &_swigt__p_short,
+  &_swigt__p_signed_char,
+  &_swigt__p_size_type,
+  &_swigt__p_std__functionT_void_fint_faiss__IndexBinary_const_pF_t,
+  &_swigt__p_std__functionT_void_fint_faiss__IndexBinary_pF_t,
+  &_swigt__p_std__functionT_void_fint_faiss__Index_const_pF_t,
+  &_swigt__p_std__functionT_void_fint_faiss__Index_pF_t,
+  &_swigt__p_std__invalid_argument,
+  &_swigt__p_std__listT_faiss__OnDiskInvertedLists__Slot_t,
+  &_swigt__p_std__mt19937,
+  &_swigt__p_std__pairT_float_int_t,
+  &_swigt__p_std__pairT_void_p_unsigned_long_t,
+  &_swigt__p_std__priority_queueT_faiss__HNSW__NodeDistFarther_t,
+  &_swigt__p_std__priority_queueT_std__pairT_float_int_t_t,
+  &_swigt__p_std__shared_ptrT_faiss__gpu__GpuResources_t,
+  &_swigt__p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t,
+  &_swigt__p_std__shared_ptrT_faiss__nsg__GraphT_int_t_t,
+  &_swigt__p_std__unordered_mapT_long_faiss__IndexBinaryHash__InvertedList_t,
+  &_swigt__p_std__unordered_mapT_long_long_t,
+  &_swigt__p_std__unordered_mapT_std__string_double_t,
+  &_swigt__p_std__unordered_mapT_unsigned_long_faiss__MatrixStats__Occurrence_t,
+  &_swigt__p_std__unordered_multimapT_long_long_t,
+  &_swigt__p_std__vectorT_char_t,
+  &_swigt__p_std__vectorT_double_t,
+  &_swigt__p_std__vectorT_faiss__AlignedTableT_uint8_t_32_t_t,
+  &_swigt__p_std__vectorT_faiss__BufferList__Buffer_t,
+  &_swigt__p_std__vectorT_faiss__ClusteringIterationStats_t,
+  &_swigt__p_std__vectorT_faiss__HNSW__NodeDistFarther_t,
+  &_swigt__p_std__vectorT_faiss__Index_p_t,
+  &_swigt__p_std__vectorT_faiss__InvertedLists_const_p_t,
+  &_swigt__p_std__vectorT_faiss__InvertedLists_p_t,
+  &_swigt__p_std__vectorT_faiss__MatrixStats__PerDimStats_t,
+  &_swigt__p_std__vectorT_faiss__Node_t,
+  &_swigt__p_std__vectorT_faiss__OnDiskOneList_t,
+  &_swigt__p_std__vectorT_faiss__OperatingPoint_t,
+  &_swigt__p_std__vectorT_faiss__ParameterRange_t,
+  &_swigt__p_std__vectorT_faiss__RangeQueryResult_t,
+  &_swigt__p_std__vectorT_faiss__RangeSearchPartialResult_p_t,
+  &_swigt__p_std__vectorT_faiss__Repeat_t,
+  &_swigt__p_std__vectorT_faiss__VectorTransform_p_t,
+  &_swigt__p_std__vectorT_faiss__ZnSphereCodec__CodeSegment_t,
+  &_swigt__p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t,
+  &_swigt__p_std__vectorT_faiss__gpu__ToGpuCloner_t,
+  &_swigt__p_std__vectorT_faiss__nndescent__Neighbor_t,
+  &_swigt__p_std__vectorT_faiss__nndescent__Nhood_t,
+  &_swigt__p_std__vectorT_float_t,
+  &_swigt__p_std__vectorT_ihipStream_t_p_t,
+  &_swigt__p_std__vectorT_int_t,
+  &_swigt__p_std__vectorT_long_t,
+  &_swigt__p_std__vectorT_omp_lock_t_t,
+  &_swigt__p_std__vectorT_short_t,
+  &_swigt__p_std__vectorT_signed_char_t,
+  &_swigt__p_std__vectorT_std__mutex_t,
+  &_swigt__p_std__vectorT_std__unordered_mapT_long_std__vectorT_int64_t_t_t_t,
+  &_swigt__p_std__vectorT_std__vectorT_float_t_t,
+  &_swigt__p_std__vectorT_std__vectorT_int32_t_t_t,
+  &_swigt__p_std__vectorT_std__vectorT_int64_t_t_t,
+  &_swigt__p_std__vectorT_std__vectorT_uint64_t_t_t,
+  &_swigt__p_std__vectorT_std__vectorT_uint8_t_t_t,
+  &_swigt__p_std__vectorT_unsigned_char_t,
+  &_swigt__p_std__vectorT_unsigned_int_t,
+  &_swigt__p_std__vectorT_unsigned_long_t,
+  &_swigt__p_std__vectorT_unsigned_short_t,
+  &_swigt__p_storage_idx_t,
+  &_swigt__p_swig__SwigPyIterator,
+  &_swigt__p_unsigned_char,
+  &_swigt__p_unsigned_int,
+  &_swigt__p_unsigned_long,
+  &_swigt__p_unsigned_short,
+  &_swigt__p_value_type,
+  &_swigt__p_void,
+};
+
+static swig_cast_info _swigc__p_Crev[] = {  {&_swigt__p_Crev, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_FILE[] = {  {&_swigt__p_FILE, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_InvertedListMap[] = {  {&_swigt__p_InvertedListMap, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_KNNGraph[] = {  {&_swigt__p_KNNGraph, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_List[] = {  {&_swigt__p_List, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_Map[] = {  {&_swigt__p_Map, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_MapLong2Long[] = {  {&_swigt__p_MapLong2Long, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_Node[] = {  {&_swigt__p_Node, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_PyCallbackIOReader[] = {  {&_swigt__p_PyCallbackIOReader, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_PyCallbackIOWriter[] = {  {&_swigt__p_PyCallbackIOWriter, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_Search_type_t[] = {  {&_swigt__p_Search_type_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_T[] = {  {&_swigt__p_T, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_TI[] = {  {&_swigt__p_TI, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_Type[] = {  {&_swigt__p_Type, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_allocator_type[] = {  {&_swigt__p_allocator_type, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_char[] = {  {&_swigt__p_char, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_component_t[] = {  {&_swigt__p_component_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_difference_type[] = {  {&_swigt__p_difference_type, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_distance_t[] = {  {&_swigt__p_distance_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_double[] = {  {&_swigt__p_double, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__AdditiveCoarseQuantizer[] = {  {&_swigt__p_faiss__AdditiveCoarseQuantizer, 0, 0, 0},  {&_swigt__p_faiss__ResidualCoarseQuantizer, _p_faiss__ResidualCoarseQuantizerTo_p_faiss__AdditiveCoarseQuantizer, 0, 0},  {&_swigt__p_faiss__LocalSearchCoarseQuantizer, _p_faiss__LocalSearchCoarseQuantizerTo_p_faiss__AdditiveCoarseQuantizer, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__AdditiveQuantizer[] = {  {&_swigt__p_faiss__AdditiveQuantizer, 0, 0, 0},  {&_swigt__p_faiss__ResidualQuantizer, _p_faiss__ResidualQuantizerTo_p_faiss__AdditiveQuantizer, 0, 0},  {&_swigt__p_faiss__LocalSearchQuantizer, _p_faiss__LocalSearchQuantizerTo_p_faiss__AdditiveQuantizer, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__AlignedTableT_float_32_t[] = {  {&_swigt__p_faiss__AlignedTableT_float_32_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__AlignedTableT_unsigned_char_32_t[] = {  {&_swigt__p_faiss__AlignedTableT_unsigned_char_32_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__AlignedTableT_unsigned_short_32_t[] = {  {&_swigt__p_faiss__AlignedTableT_unsigned_short_32_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__AlignedTableTightAllocT_float_32_t[] = {  {&_swigt__p_faiss__AlignedTableTightAllocT_float_32_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__AlignedTableTightAllocT_unsigned_char_32_t[] = {  {&_swigt__p_faiss__AlignedTableTightAllocT_unsigned_char_32_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__AlignedTableTightAllocT_unsigned_short_32_t[] = {  {&_swigt__p_faiss__AlignedTableTightAllocT_unsigned_short_32_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ArrayInvertedLists[] = {  {&_swigt__p_faiss__ArrayInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__AutoTuneCriterion[] = {  {&_swigt__p_faiss__AutoTuneCriterion, 0, 0, 0},  {&_swigt__p_faiss__OneRecallAtRCriterion, _p_faiss__OneRecallAtRCriterionTo_p_faiss__AutoTuneCriterion, 0, 0},  {&_swigt__p_faiss__IntersectionCriterion, _p_faiss__IntersectionCriterionTo_p_faiss__AutoTuneCriterion, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__BinaryInvertedListScanner[] = {  {&_swigt__p_faiss__BinaryInvertedListScanner, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__BitstringReader[] = {  {&_swigt__p_faiss__BitstringReader, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__BitstringWriter[] = {  {&_swigt__p_faiss__BitstringWriter, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__BlockInvertedLists[] = {  {&_swigt__p_faiss__BlockInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__BufferList[] = {  {&_swigt__p_faiss__RangeSearchPartialResult, _p_faiss__RangeSearchPartialResultTo_p_faiss__BufferList, 0, 0},  {&_swigt__p_faiss__BufferList, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__BufferedIOReader[] = {  {&_swigt__p_faiss__BufferedIOReader, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__BufferedIOWriter[] = {  {&_swigt__p_faiss__BufferedIOWriter, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__CenteringTransform[] = {  {&_swigt__p_faiss__CenteringTransform, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__Cloner[] = {  {&_swigt__p_faiss__Cloner, 0, 0, 0},  {&_swigt__p_faiss__gpu__ToCPUCloner, _p_faiss__gpu__ToCPUClonerTo_p_faiss__Cloner, 0, 0},  {&_swigt__p_faiss__gpu__ToGpuCloner, _p_faiss__gpu__ToGpuClonerTo_p_faiss__Cloner, 0, 0},  {&_swigt__p_faiss__gpu__ToGpuClonerMultiple, _p_faiss__gpu__ToGpuClonerMultipleTo_p_faiss__Cloner, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__Clustering[] = {  {&_swigt__p_faiss__Clustering1D, _p_faiss__Clustering1DTo_p_faiss__Clustering, 0, 0},  {&_swigt__p_faiss__Clustering, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__Clustering1D[] = {  {&_swigt__p_faiss__Clustering1D, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ClusteringIterationStats[] = {  {&_swigt__p_faiss__ClusteringIterationStats, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ClusteringParameters[] = {  {&_swigt__p_faiss__Clustering1D, _p_faiss__Clustering1DTo_p_faiss__ClusteringParameters, 0, 0},  {&_swigt__p_faiss__Clustering, _p_faiss__ClusteringTo_p_faiss__ClusteringParameters, 0, 0},  {&_swigt__p_faiss__ProgressiveDimClustering, _p_faiss__ProgressiveDimClusteringTo_p_faiss__ClusteringParameters, 0, 0},  {&_swigt__p_faiss__ClusteringParameters, 0, 0, 0},  {&_swigt__p_faiss__ProgressiveDimClusteringParameters, _p_faiss__ProgressiveDimClusteringParametersTo_p_faiss__ClusteringParameters, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__DirectMap[] = {  {&_swigt__p_faiss__DirectMap, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__DirectMapAdd[] = {  {&_swigt__p_faiss__DirectMapAdd, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__DistanceComputer[] = {  {&_swigt__p_faiss__DistanceComputer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__EnumeratedVectors[] = {  {&_swigt__p_faiss__EnumeratedVectors, 0, 0, 0},  {&_swigt__p_faiss__ZnSphereCodec, _p_faiss__ZnSphereCodecTo_p_faiss__EnumeratedVectors, 0, 0},  {&_swigt__p_faiss__ZnSphereCodecRec, _p_faiss__ZnSphereCodecRecTo_p_faiss__EnumeratedVectors, 0, 0},  {&_swigt__p_faiss__ZnSphereCodecAlt, _p_faiss__ZnSphereCodecAltTo_p_faiss__EnumeratedVectors, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__FastScanStats[] = {  {&_swigt__p_faiss__FastScanStats, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__FileIOReader[] = {  {&_swigt__p_faiss__FileIOReader, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__FileIOWriter[] = {  {&_swigt__p_faiss__FileIOWriter, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__HNSW[] = {  {&_swigt__p_faiss__HNSW, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__HNSWStats[] = {  {&_swigt__p_faiss__HNSWStats, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__HNSW__MinimaxHeap[] = {  {&_swigt__p_faiss__HNSW__MinimaxHeap, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__HStackInvertedLists[] = {  {&_swigt__p_faiss__HStackInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t[] = {  {&_swigt__p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t[] = {  {&_swigt__p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t[] = {  {&_swigt__p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t[] = {  {&_swigt__p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IDSelector[] = {  {&_swigt__p_faiss__IDSelector, 0, 0, 0},  {&_swigt__p_faiss__IDSelectorBatch, _p_faiss__IDSelectorBatchTo_p_faiss__IDSelector, 0, 0},  {&_swigt__p_faiss__IDSelectorRange, _p_faiss__IDSelectorRangeTo_p_faiss__IDSelector, 0, 0},  {&_swigt__p_faiss__IDSelectorArray, _p_faiss__IDSelectorArrayTo_p_faiss__IDSelector, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IDSelectorArray[] = {  {&_swigt__p_faiss__IDSelectorArray, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IDSelectorBatch[] = {  {&_swigt__p_faiss__IDSelectorBatch, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IDSelectorRange[] = {  {&_swigt__p_faiss__IDSelectorRange, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IOReader[] = {  {&_swigt__p_faiss__IOReader, 0, 0, 0},  {&_swigt__p_faiss__VectorIOReader, _p_faiss__VectorIOReaderTo_p_faiss__IOReader, 0, 0},  {&_swigt__p_faiss__FileIOReader, _p_faiss__FileIOReaderTo_p_faiss__IOReader, 0, 0},  {&_swigt__p_faiss__BufferedIOReader, _p_faiss__BufferedIOReaderTo_p_faiss__IOReader, 0, 0},  {&_swigt__p_PyCallbackIOReader, _p_PyCallbackIOReaderTo_p_faiss__IOReader, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IOWriter[] = {  {&_swigt__p_faiss__IOWriter, 0, 0, 0},  {&_swigt__p_faiss__VectorIOWriter, _p_faiss__VectorIOWriterTo_p_faiss__IOWriter, 0, 0},  {&_swigt__p_faiss__FileIOWriter, _p_faiss__FileIOWriterTo_p_faiss__IOWriter, 0, 0},  {&_swigt__p_faiss__BufferedIOWriter, _p_faiss__BufferedIOWriterTo_p_faiss__IOWriter, 0, 0},  {&_swigt__p_PyCallbackIOWriter, _p_PyCallbackIOWriterTo_p_faiss__IOWriter, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ITQMatrix[] = {  {&_swigt__p_faiss__ITQMatrix, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ITQTransform[] = {  {&_swigt__p_faiss__ITQTransform, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IVFFastScanStats[] = {  {&_swigt__p_faiss__IVFFastScanStats, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IVFPQSearchParameters[] = {  {&_swigt__p_faiss__IVFPQSearchParameters, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IVFSearchParameters[] = {  {&_swigt__p_faiss__IVFSearchParameters, 0, 0, 0},  {&_swigt__p_faiss__IVFPQSearchParameters, _p_faiss__IVFPQSearchParametersTo_p_faiss__IVFSearchParameters, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__Index[] = {  {&_swigt__p_faiss__IndexPQ, _p_faiss__IndexPQTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexRefine, _p_faiss__IndexRefineTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexIVFFlatDedup, _p_faiss__IndexIVFFlatDedupTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexPQFastScan, _p_faiss__IndexPQFastScanTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexIVFPQFastScan, _p_faiss__IndexIVFPQFastScanTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexPreTransform, _p_faiss__IndexPreTransformTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexNSGFlat, _p_faiss__IndexNSGFlatTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__Index, 0, 0, 0},  {&_swigt__p_faiss__IndexSplitVectors, _p_faiss__IndexSplitVectorsTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexIVFFlat, _p_faiss__IndexIVFFlatTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFFlat, _p_faiss__gpu__GpuIndexIVFFlatTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexIVFAdditiveQuantizer, _p_faiss__IndexIVFAdditiveQuantizerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexIVFResidualQuantizer, _p_faiss__IndexIVFResidualQuantizerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexIVFLocalSearchQuantizer, _p_faiss__IndexIVFLocalSearchQuantizerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexIVFScalarQuantizer, _p_faiss__IndexIVFScalarQuantizerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexScalarQuantizer, _p_faiss__IndexScalarQuantizerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__LocalSearchCoarseQuantizer, _p_faiss__LocalSearchCoarseQuantizerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__ResidualCoarseQuantizer, _p_faiss__ResidualCoarseQuantizerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__AdditiveCoarseQuantizer, _p_faiss__AdditiveCoarseQuantizerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__MultiIndexQuantizer, _p_faiss__MultiIndexQuantizerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexLocalSearchQuantizer, _p_faiss__IndexLocalSearchQuantizerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexAdditiveQuantizer, _p_faiss__IndexAdditiveQuantizerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFScalarQuantizer, _p_faiss__gpu__GpuIndexIVFScalarQuantizerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexResidualQuantizer, _p_faiss__IndexResidualQuantizerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexRefineFlat, _p_faiss__IndexRefineFlatTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexIVFPQ, _p_faiss__IndexIVFPQTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFPQ, _p_faiss__gpu__GpuIndexIVFPQTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexLSH, _p_faiss__IndexLSHTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexHNSWSQ, _p_faiss__IndexHNSWSQTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndex, _p_faiss__gpu__GpuIndexTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexHNSW2Level, _p_faiss__IndexHNSW2LevelTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__Index2Layer, _p_faiss__Index2LayerTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexFlatL2, _p_faiss__gpu__GpuIndexFlatL2To_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexFlatL2, _p_faiss__IndexFlatL2To_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexHNSWFlat, _p_faiss__IndexHNSWFlatTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexIVFPQR, _p_faiss__IndexIVFPQRTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexFlat1D, _p_faiss__IndexFlat1DTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexFlat, _p_faiss__gpu__GpuIndexFlatTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexFlatIP, _p_faiss__gpu__GpuIndexFlatIPTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexNNDescentFlat, _p_faiss__IndexNNDescentFlatTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexFlat, _p_faiss__IndexFlatTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexFlatIP, _p_faiss__IndexFlatIPTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexNSG, _p_faiss__IndexNSGTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexFlatCodes, _p_faiss__IndexFlatCodesTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexNNDescent, _p_faiss__IndexNNDescentTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexHNSW, _p_faiss__IndexHNSWTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexHNSWPQ, _p_faiss__IndexHNSWPQTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexLattice, _p_faiss__IndexLatticeTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVF, _p_faiss__gpu__GpuIndexIVFTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexIVFSpectralHash, _p_faiss__IndexIVFSpectralHashTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexIVF, _p_faiss__IndexIVFTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__MultiIndexQuantizer2, _p_faiss__MultiIndexQuantizer2To_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__ThreadedIndexT_faiss__Index_t, _p_faiss__ThreadedIndexT_faiss__Index_tTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexShardsTemplateT_faiss__Index_t, _p_faiss__IndexShardsTemplateT_faiss__Index_tTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexReplicasTemplateT_faiss__Index_t, _p_faiss__IndexReplicasTemplateT_faiss__Index_tTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexIDMapTemplateT_faiss__Index_t, _p_faiss__IndexIDMapTemplateT_faiss__Index_tTo_p_faiss__Index, 0, 0},  {&_swigt__p_faiss__IndexIDMap2TemplateT_faiss__Index_t, _p_faiss__IndexIDMap2TemplateT_faiss__Index_tTo_p_faiss__Index, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__Index2Layer[] = {  {&_swigt__p_faiss__Index2Layer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexAdditiveQuantizer[] = {  {&_swigt__p_faiss__IndexAdditiveQuantizer, 0, 0, 0},  {&_swigt__p_faiss__IndexResidualQuantizer, _p_faiss__IndexResidualQuantizerTo_p_faiss__IndexAdditiveQuantizer, 0, 0},  {&_swigt__p_faiss__IndexLocalSearchQuantizer, _p_faiss__IndexLocalSearchQuantizerTo_p_faiss__IndexAdditiveQuantizer, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexBinary[] = {  {&_swigt__p_faiss__IndexBinaryFlat, _p_faiss__IndexBinaryFlatTo_p_faiss__IndexBinary, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexBinaryFlat, _p_faiss__gpu__GpuIndexBinaryFlatTo_p_faiss__IndexBinary, 0, 0},  {&_swigt__p_faiss__ThreadedIndexT_faiss__IndexBinary_t, _p_faiss__ThreadedIndexT_faiss__IndexBinary_tTo_p_faiss__IndexBinary, 0, 0},  {&_swigt__p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, _p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_tTo_p_faiss__IndexBinary, 0, 0},  {&_swigt__p_faiss__IndexBinary, 0, 0, 0},  {&_swigt__p_faiss__IndexBinaryMultiHash, _p_faiss__IndexBinaryMultiHashTo_p_faiss__IndexBinary, 0, 0},  {&_swigt__p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, _p_faiss__IndexShardsTemplateT_faiss__IndexBinary_tTo_p_faiss__IndexBinary, 0, 0},  {&_swigt__p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, _p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_tTo_p_faiss__IndexBinary, 0, 0},  {&_swigt__p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t, _p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_tTo_p_faiss__IndexBinary, 0, 0},  {&_swigt__p_faiss__IndexBinaryHNSW, _p_faiss__IndexBinaryHNSWTo_p_faiss__IndexBinary, 0, 0},  {&_swigt__p_faiss__IndexBinaryIVF, _p_faiss__IndexBinaryIVFTo_p_faiss__IndexBinary, 0, 0},  {&_swigt__p_faiss__IndexBinaryFromFloat, _p_faiss__IndexBinaryFromFloatTo_p_faiss__IndexBinary, 0, 0},  {&_swigt__p_faiss__IndexBinaryHash, _p_faiss__IndexBinaryHashTo_p_faiss__IndexBinary, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexBinaryFlat[] = {  {&_swigt__p_faiss__IndexBinaryFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexBinaryFromFloat[] = {  {&_swigt__p_faiss__IndexBinaryFromFloat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexBinaryHNSW[] = {  {&_swigt__p_faiss__IndexBinaryHNSW, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexBinaryHash[] = {  {&_swigt__p_faiss__IndexBinaryHash, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexBinaryHashStats[] = {  {&_swigt__p_faiss__IndexBinaryHashStats, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexBinaryIVF[] = {  {&_swigt__p_faiss__IndexBinaryIVF, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexBinaryMultiHash[] = {  {&_swigt__p_faiss__IndexBinaryMultiHash, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexFlat[] = {  {&_swigt__p_faiss__IndexFlat, 0, 0, 0},  {&_swigt__p_faiss__IndexFlatL2, _p_faiss__IndexFlatL2To_p_faiss__IndexFlat, 0, 0},  {&_swigt__p_faiss__IndexFlat1D, _p_faiss__IndexFlat1DTo_p_faiss__IndexFlat, 0, 0},  {&_swigt__p_faiss__IndexFlatIP, _p_faiss__IndexFlatIPTo_p_faiss__IndexFlat, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexFlat1D[] = {  {&_swigt__p_faiss__IndexFlat1D, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexFlatCodes[] = {  {&_swigt__p_faiss__IndexFlat, _p_faiss__IndexFlatTo_p_faiss__IndexFlatCodes, 0, 0},  {&_swigt__p_faiss__IndexFlatL2, _p_faiss__IndexFlatL2To_p_faiss__IndexFlatCodes, 0, 0},  {&_swigt__p_faiss__IndexFlat1D, _p_faiss__IndexFlat1DTo_p_faiss__IndexFlatCodes, 0, 0},  {&_swigt__p_faiss__IndexPQ, _p_faiss__IndexPQTo_p_faiss__IndexFlatCodes, 0, 0},  {&_swigt__p_faiss__IndexAdditiveQuantizer, _p_faiss__IndexAdditiveQuantizerTo_p_faiss__IndexFlatCodes, 0, 0},  {&_swigt__p_faiss__IndexResidualQuantizer, _p_faiss__IndexResidualQuantizerTo_p_faiss__IndexFlatCodes, 0, 0},  {&_swigt__p_faiss__IndexLocalSearchQuantizer, _p_faiss__IndexLocalSearchQuantizerTo_p_faiss__IndexFlatCodes, 0, 0},  {&_swigt__p_faiss__IndexScalarQuantizer, _p_faiss__IndexScalarQuantizerTo_p_faiss__IndexFlatCodes, 0, 0},  {&_swigt__p_faiss__Index2Layer, _p_faiss__Index2LayerTo_p_faiss__IndexFlatCodes, 0, 0},  {&_swigt__p_faiss__IndexFlatCodes, 0, 0, 0},  {&_swigt__p_faiss__IndexFlatIP, _p_faiss__IndexFlatIPTo_p_faiss__IndexFlatCodes, 0, 0},  {&_swigt__p_faiss__IndexLSH, _p_faiss__IndexLSHTo_p_faiss__IndexFlatCodes, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexFlatIP[] = {  {&_swigt__p_faiss__IndexFlatIP, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexFlatL2[] = {  {&_swigt__p_faiss__IndexFlatL2, 0, 0, 0},  {&_swigt__p_faiss__IndexFlat1D, _p_faiss__IndexFlat1DTo_p_faiss__IndexFlatL2, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexHNSW[] = {  {&_swigt__p_faiss__IndexHNSWFlat, _p_faiss__IndexHNSWFlatTo_p_faiss__IndexHNSW, 0, 0},  {&_swigt__p_faiss__IndexHNSW, 0, 0, 0},  {&_swigt__p_faiss__IndexHNSWSQ, _p_faiss__IndexHNSWSQTo_p_faiss__IndexHNSW, 0, 0},  {&_swigt__p_faiss__IndexHNSWPQ, _p_faiss__IndexHNSWPQTo_p_faiss__IndexHNSW, 0, 0},  {&_swigt__p_faiss__IndexHNSW2Level, _p_faiss__IndexHNSW2LevelTo_p_faiss__IndexHNSW, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexHNSW2Level[] = {  {&_swigt__p_faiss__IndexHNSW2Level, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexHNSWFlat[] = {  {&_swigt__p_faiss__IndexHNSWFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexHNSWPQ[] = {  {&_swigt__p_faiss__IndexHNSWPQ, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexHNSWSQ[] = {  {&_swigt__p_faiss__IndexHNSWSQ, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t[] = {  {&_swigt__p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIDMap2TemplateT_faiss__Index_t[] = {  {&_swigt__p_faiss__IndexIDMap2TemplateT_faiss__Index_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t[] = {  {&_swigt__p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0, 0, 0},  {&_swigt__p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t, _p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_tTo_p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIDMapTemplateT_faiss__Index_t[] = {  {&_swigt__p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0, 0, 0},  {&_swigt__p_faiss__IndexIDMap2TemplateT_faiss__Index_t, _p_faiss__IndexIDMap2TemplateT_faiss__Index_tTo_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIVF[] = {  {&_swigt__p_faiss__IndexIVFPQFastScan, _p_faiss__IndexIVFPQFastScanTo_p_faiss__IndexIVF, 0, 0},  {&_swigt__p_faiss__IndexIVF, 0, 0, 0},  {&_swigt__p_faiss__IndexIVFScalarQuantizer, _p_faiss__IndexIVFScalarQuantizerTo_p_faiss__IndexIVF, 0, 0},  {&_swigt__p_faiss__IndexIVFAdditiveQuantizer, _p_faiss__IndexIVFAdditiveQuantizerTo_p_faiss__IndexIVF, 0, 0},  {&_swigt__p_faiss__IndexIVFResidualQuantizer, _p_faiss__IndexIVFResidualQuantizerTo_p_faiss__IndexIVF, 0, 0},  {&_swigt__p_faiss__IndexIVFLocalSearchQuantizer, _p_faiss__IndexIVFLocalSearchQuantizerTo_p_faiss__IndexIVF, 0, 0},  {&_swigt__p_faiss__IndexIVFPQ, _p_faiss__IndexIVFPQTo_p_faiss__IndexIVF, 0, 0},  {&_swigt__p_faiss__IndexIVFFlat, _p_faiss__IndexIVFFlatTo_p_faiss__IndexIVF, 0, 0},  {&_swigt__p_faiss__IndexIVFFlatDedup, _p_faiss__IndexIVFFlatDedupTo_p_faiss__IndexIVF, 0, 0},  {&_swigt__p_faiss__IndexIVFPQR, _p_faiss__IndexIVFPQRTo_p_faiss__IndexIVF, 0, 0},  {&_swigt__p_faiss__IndexIVFSpectralHash, _p_faiss__IndexIVFSpectralHashTo_p_faiss__IndexIVF, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIVFAdditiveQuantizer[] = {  {&_swigt__p_faiss__IndexIVFAdditiveQuantizer, 0, 0, 0},  {&_swigt__p_faiss__IndexIVFResidualQuantizer, _p_faiss__IndexIVFResidualQuantizerTo_p_faiss__IndexIVFAdditiveQuantizer, 0, 0},  {&_swigt__p_faiss__IndexIVFLocalSearchQuantizer, _p_faiss__IndexIVFLocalSearchQuantizerTo_p_faiss__IndexIVFAdditiveQuantizer, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIVFFlat[] = {  {&_swigt__p_faiss__IndexIVFFlat, 0, 0, 0},  {&_swigt__p_faiss__IndexIVFFlatDedup, _p_faiss__IndexIVFFlatDedupTo_p_faiss__IndexIVFFlat, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIVFFlatDedup[] = {  {&_swigt__p_faiss__IndexIVFFlatDedup, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIVFLocalSearchQuantizer[] = {  {&_swigt__p_faiss__IndexIVFLocalSearchQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIVFPQ[] = {  {&_swigt__p_faiss__IndexIVFPQ, 0, 0, 0},  {&_swigt__p_faiss__IndexIVFPQR, _p_faiss__IndexIVFPQRTo_p_faiss__IndexIVFPQ, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIVFPQFastScan[] = {  {&_swigt__p_faiss__IndexIVFPQFastScan, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIVFPQR[] = {  {&_swigt__p_faiss__IndexIVFPQR, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIVFPQStats[] = {  {&_swigt__p_faiss__IndexIVFPQStats, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIVFResidualQuantizer[] = {  {&_swigt__p_faiss__IndexIVFResidualQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIVFScalarQuantizer[] = {  {&_swigt__p_faiss__IndexIVFScalarQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIVFSpectralHash[] = {  {&_swigt__p_faiss__IndexIVFSpectralHash, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexIVFStats[] = {  {&_swigt__p_faiss__IndexIVFStats, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexLSH[] = {  {&_swigt__p_faiss__IndexLSH, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexLattice[] = {  {&_swigt__p_faiss__IndexLattice, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexLocalSearchQuantizer[] = {  {&_swigt__p_faiss__IndexLocalSearchQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexNNDescent[] = {  {&_swigt__p_faiss__IndexNNDescentFlat, _p_faiss__IndexNNDescentFlatTo_p_faiss__IndexNNDescent, 0, 0},  {&_swigt__p_faiss__IndexNNDescent, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexNNDescentFlat[] = {  {&_swigt__p_faiss__IndexNNDescentFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexNSG[] = {  {&_swigt__p_faiss__IndexNSG, 0, 0, 0},  {&_swigt__p_faiss__IndexNSGFlat, _p_faiss__IndexNSGFlatTo_p_faiss__IndexNSG, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexNSGFlat[] = {  {&_swigt__p_faiss__IndexNSGFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexPQ[] = {  {&_swigt__p_faiss__IndexPQ, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexPQFastScan[] = {  {&_swigt__p_faiss__IndexPQFastScan, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexPQStats[] = {  {&_swigt__p_faiss__IndexPQStats, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexPreTransform[] = {  {&_swigt__p_faiss__IndexPreTransform, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexRefine[] = {  {&_swigt__p_faiss__IndexRefineFlat, _p_faiss__IndexRefineFlatTo_p_faiss__IndexRefine, 0, 0},  {&_swigt__p_faiss__IndexRefine, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexRefineFlat[] = {  {&_swigt__p_faiss__IndexRefineFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t[] = {  {&_swigt__p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexReplicasTemplateT_faiss__Index_t[] = {  {&_swigt__p_faiss__IndexReplicasTemplateT_faiss__Index_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexResidualQuantizer[] = {  {&_swigt__p_faiss__IndexResidualQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexScalarQuantizer[] = {  {&_swigt__p_faiss__IndexScalarQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t[] = {  {&_swigt__p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexShardsTemplateT_faiss__Index_t[] = {  {&_swigt__p_faiss__IndexShardsTemplateT_faiss__Index_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IndexSplitVectors[] = {  {&_swigt__p_faiss__IndexSplitVectors, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__InterruptCallback[] = {  {&_swigt__p_faiss__InterruptCallback, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__IntersectionCriterion[] = {  {&_swigt__p_faiss__IntersectionCriterion, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__InvertedListScanner[] = {  {&_swigt__p_faiss__InvertedListScanner, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__InvertedLists[] = {  {&_swigt__p_faiss__InvertedLists, 0, 0, 0},  {&_swigt__p_faiss__ArrayInvertedLists, _p_faiss__ArrayInvertedListsTo_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_faiss__ReadOnlyInvertedLists, _p_faiss__ReadOnlyInvertedListsTo_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_faiss__HStackInvertedLists, _p_faiss__HStackInvertedListsTo_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_faiss__SliceInvertedLists, _p_faiss__SliceInvertedListsTo_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_faiss__VStackInvertedLists, _p_faiss__VStackInvertedListsTo_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_faiss__MaskedInvertedLists, _p_faiss__MaskedInvertedListsTo_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_faiss__StopWordsInvertedLists, _p_faiss__StopWordsInvertedListsTo_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_faiss__BlockInvertedLists, _p_faiss__BlockInvertedListsTo_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_faiss__OnDiskInvertedLists, _p_faiss__OnDiskInvertedListsTo_p_faiss__InvertedLists, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__BlockInvertedListsIOHook[] = {{&_swigt__p_faiss__BlockInvertedListsIOHook, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__OnDiskInvertedListsIOHook[] = {{&_swigt__p_faiss__OnDiskInvertedListsIOHook, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__InvertedListsIOHook[] = {  {&_swigt__p_faiss__InvertedListsIOHook, 0, 0, 0},  {&_swigt__p_faiss__BlockInvertedListsIOHook, _p_faiss__BlockInvertedListsIOHookTo_p_faiss__InvertedListsIOHook, 0, 0},  {&_swigt__p_faiss__OnDiskInvertedListsIOHook, _p_faiss__OnDiskInvertedListsIOHookTo_p_faiss__InvertedListsIOHook, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__Level1Quantizer[] = {  {&_swigt__p_faiss__IndexIVFPQFastScan, _p_faiss__IndexIVFPQFastScanTo_p_faiss__Level1Quantizer, 0, 0},  {&_swigt__p_faiss__Level1Quantizer, 0, 0, 0},  {&_swigt__p_faiss__IndexIVF, _p_faiss__IndexIVFTo_p_faiss__Level1Quantizer, 0, 0},  {&_swigt__p_faiss__IndexIVFScalarQuantizer, _p_faiss__IndexIVFScalarQuantizerTo_p_faiss__Level1Quantizer, 0, 0},  {&_swigt__p_faiss__IndexIVFAdditiveQuantizer, _p_faiss__IndexIVFAdditiveQuantizerTo_p_faiss__Level1Quantizer, 0, 0},  {&_swigt__p_faiss__IndexIVFResidualQuantizer, _p_faiss__IndexIVFResidualQuantizerTo_p_faiss__Level1Quantizer, 0, 0},  {&_swigt__p_faiss__IndexIVFLocalSearchQuantizer, _p_faiss__IndexIVFLocalSearchQuantizerTo_p_faiss__Level1Quantizer, 0, 0},  {&_swigt__p_faiss__IndexIVFPQ, _p_faiss__IndexIVFPQTo_p_faiss__Level1Quantizer, 0, 0},  {&_swigt__p_faiss__IndexIVFFlat, _p_faiss__IndexIVFFlatTo_p_faiss__Level1Quantizer, 0, 0},  {&_swigt__p_faiss__IndexIVFFlatDedup, _p_faiss__IndexIVFFlatDedupTo_p_faiss__Level1Quantizer, 0, 0},  {&_swigt__p_faiss__IndexIVFPQR, _p_faiss__IndexIVFPQRTo_p_faiss__Level1Quantizer, 0, 0},  {&_swigt__p_faiss__IndexIVFSpectralHash, _p_faiss__IndexIVFSpectralHashTo_p_faiss__Level1Quantizer, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__LinearTransform[] = {  {&_swigt__p_faiss__RandomRotationMatrix, _p_faiss__RandomRotationMatrixTo_p_faiss__LinearTransform, 0, 0},  {&_swigt__p_faiss__PCAMatrix, _p_faiss__PCAMatrixTo_p_faiss__LinearTransform, 0, 0},  {&_swigt__p_faiss__ITQMatrix, _p_faiss__ITQMatrixTo_p_faiss__LinearTransform, 0, 0},  {&_swigt__p_faiss__OPQMatrix, _p_faiss__OPQMatrixTo_p_faiss__LinearTransform, 0, 0},  {&_swigt__p_faiss__LinearTransform, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__LocalSearchCoarseQuantizer[] = {  {&_swigt__p_faiss__LocalSearchCoarseQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__LocalSearchQuantizer[] = {  {&_swigt__p_faiss__LocalSearchQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__LockLevels[] = {  {&_swigt__p_faiss__LockLevels, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__MaskedInvertedLists[] = {  {&_swigt__p_faiss__MaskedInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__MatrixStats[] = {  {&_swigt__p_faiss__MatrixStats, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__MultiIndexQuantizer[] = {  {&_swigt__p_faiss__MultiIndexQuantizer, 0, 0, 0},  {&_swigt__p_faiss__MultiIndexQuantizer2, _p_faiss__MultiIndexQuantizer2To_p_faiss__MultiIndexQuantizer, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__MultiIndexQuantizer2[] = {  {&_swigt__p_faiss__MultiIndexQuantizer2, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__NNDescent[] = {  {&_swigt__p_faiss__NNDescent, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__NSG[] = {  {&_swigt__p_faiss__NSG, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__NormalizationTransform[] = {  {&_swigt__p_faiss__NormalizationTransform, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__OPQMatrix[] = {  {&_swigt__p_faiss__OPQMatrix, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__OnDiskInvertedLists[] = {  {&_swigt__p_faiss__OnDiskInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__OnDiskInvertedLists__OngoingPrefetch[] = {  {&_swigt__p_faiss__OnDiskInvertedLists__OngoingPrefetch, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__OnDiskOneList[] = {  {&_swigt__p_faiss__OnDiskOneList, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__OneRecallAtRCriterion[] = {  {&_swigt__p_faiss__OneRecallAtRCriterion, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__OperatingPoint[] = {  {&_swigt__p_faiss__OperatingPoint, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__OperatingPoints[] = {  {&_swigt__p_faiss__OperatingPoints, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__PCAMatrix[] = {  {&_swigt__p_faiss__PCAMatrix, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__PQDecoder16[] = {  {&_swigt__p_faiss__PQDecoder16, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__PQDecoder8[] = {  {&_swigt__p_faiss__PQDecoder8, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__PQDecoderGeneric[] = {  {&_swigt__p_faiss__PQDecoderGeneric, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__PQEncoder16[] = {  {&_swigt__p_faiss__PQEncoder16, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__PQEncoder8[] = {  {&_swigt__p_faiss__PQEncoder8, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__PQEncoderGeneric[] = {  {&_swigt__p_faiss__PQEncoderGeneric, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ParameterRange[] = {  {&_swigt__p_faiss__ParameterRange, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ParameterSpace[] = {  {&_swigt__p_faiss__ParameterSpace, 0, 0, 0},  {&_swigt__p_faiss__gpu__GpuParameterSpace, _p_faiss__gpu__GpuParameterSpaceTo_p_faiss__ParameterSpace, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__PartitionStats[] = {  {&_swigt__p_faiss__PartitionStats, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__PermutationObjective[] = {  {&_swigt__p_faiss__PermutationObjective, 0, 0, 0},  {&_swigt__p_faiss__ReproduceDistancesObjective, _p_faiss__ReproduceDistancesObjectiveTo_p_faiss__PermutationObjective, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__PolysemousTraining[] = {  {&_swigt__p_faiss__PolysemousTraining, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ProductQuantizer[] = {  {&_swigt__p_faiss__ProductQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ProgressiveDimClustering[] = {  {&_swigt__p_faiss__ProgressiveDimClustering, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ProgressiveDimClusteringParameters[] = {  {&_swigt__p_faiss__ProgressiveDimClustering, _p_faiss__ProgressiveDimClusteringTo_p_faiss__ProgressiveDimClusteringParameters, 0, 0},  {&_swigt__p_faiss__ProgressiveDimClusteringParameters, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ProgressiveDimIndexFactory[] = {  {&_swigt__p_faiss__ProgressiveDimIndexFactory, 0, 0, 0},  {&_swigt__p_faiss__gpu__GpuProgressiveDimIndexFactory, _p_faiss__gpu__GpuProgressiveDimIndexFactoryTo_p_faiss__ProgressiveDimIndexFactory, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__RandomGenerator[] = {  {&_swigt__p_faiss__RandomGenerator, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__RandomRotationMatrix[] = {  {&_swigt__p_faiss__RandomRotationMatrix, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__RangeQueryResult[] = {  {&_swigt__p_faiss__RangeQueryResult, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__RangeSearchPartialResult[] = {  {&_swigt__p_faiss__RangeSearchPartialResult, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__RangeSearchResult[] = {  {&_swigt__p_faiss__RangeSearchResult, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ReadOnlyInvertedLists[] = {  {&_swigt__p_faiss__ReadOnlyInvertedLists, 0, 0, 0},  {&_swigt__p_faiss__HStackInvertedLists, _p_faiss__HStackInvertedListsTo_p_faiss__ReadOnlyInvertedLists, 0, 0},  {&_swigt__p_faiss__SliceInvertedLists, _p_faiss__SliceInvertedListsTo_p_faiss__ReadOnlyInvertedLists, 0, 0},  {&_swigt__p_faiss__VStackInvertedLists, _p_faiss__VStackInvertedListsTo_p_faiss__ReadOnlyInvertedLists, 0, 0},  {&_swigt__p_faiss__MaskedInvertedLists, _p_faiss__MaskedInvertedListsTo_p_faiss__ReadOnlyInvertedLists, 0, 0},  {&_swigt__p_faiss__StopWordsInvertedLists, _p_faiss__StopWordsInvertedListsTo_p_faiss__ReadOnlyInvertedLists, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ReconstructFromNeighbors[] = {  {&_swigt__p_faiss__ReconstructFromNeighbors, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__RemapDimensionsTransform[] = {  {&_swigt__p_faiss__RemapDimensionsTransform, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__Repeat[] = {  {&_swigt__p_faiss__Repeat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__Repeats[] = {  {&_swigt__p_faiss__Repeats, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ReproduceDistancesObjective[] = {  {&_swigt__p_faiss__ReproduceDistancesObjective, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ResidualCoarseQuantizer[] = {  {&_swigt__p_faiss__ResidualCoarseQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ResidualQuantizer[] = {  {&_swigt__p_faiss__ResidualQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ScalarQuantizer[] = {  {&_swigt__p_faiss__ScalarQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ScalarQuantizer__Quantizer[] = {  {&_swigt__p_faiss__ScalarQuantizer__Quantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ScalarQuantizer__SQDistanceComputer[] = {  {&_swigt__p_faiss__ScalarQuantizer__SQDistanceComputer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__SimulatedAnnealingOptimizer[] = {  {&_swigt__p_faiss__SimulatedAnnealingOptimizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__SimulatedAnnealingParameters[] = {  {&_swigt__p_faiss__SimulatedAnnealingParameters, 0, 0, 0},  {&_swigt__p_faiss__PolysemousTraining, _p_faiss__PolysemousTrainingTo_p_faiss__SimulatedAnnealingParameters, 0, 0},  {&_swigt__p_faiss__SimulatedAnnealingOptimizer, _p_faiss__SimulatedAnnealingOptimizerTo_p_faiss__SimulatedAnnealingParameters, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__SliceInvertedLists[] = {  {&_swigt__p_faiss__SliceInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__StopWordsInvertedLists[] = {  {&_swigt__p_faiss__StopWordsInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ThreadedIndexT_faiss__IndexBinary_t[] = {  {&_swigt__p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0, 0, 0},  {&_swigt__p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t, _p_faiss__IndexShardsTemplateT_faiss__IndexBinary_tTo_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0, 0},  {&_swigt__p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t, _p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_tTo_p_faiss__ThreadedIndexT_faiss__IndexBinary_t, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ThreadedIndexT_faiss__Index_t[] = {  {&_swigt__p_faiss__ThreadedIndexT_faiss__Index_t, 0, 0, 0},  {&_swigt__p_faiss__IndexShardsTemplateT_faiss__Index_t, _p_faiss__IndexShardsTemplateT_faiss__Index_tTo_p_faiss__ThreadedIndexT_faiss__Index_t, 0, 0},  {&_swigt__p_faiss__IndexReplicasTemplateT_faiss__Index_t, _p_faiss__IndexReplicasTemplateT_faiss__Index_tTo_p_faiss__ThreadedIndexT_faiss__Index_t, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__VStackInvertedLists[] = {  {&_swigt__p_faiss__VStackInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__VectorIOReader[] = {  {&_swigt__p_faiss__VectorIOReader, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__VectorIOWriter[] = {  {&_swigt__p_faiss__VectorIOWriter, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__VectorTransform[] = {  {&_swigt__p_faiss__RandomRotationMatrix, _p_faiss__RandomRotationMatrixTo_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_faiss__PCAMatrix, _p_faiss__PCAMatrixTo_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_faiss__ITQMatrix, _p_faiss__ITQMatrixTo_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_faiss__OPQMatrix, _p_faiss__OPQMatrixTo_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_faiss__VectorTransform, 0, 0, 0},  {&_swigt__p_faiss__LinearTransform, _p_faiss__LinearTransformTo_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_faiss__ITQTransform, _p_faiss__ITQTransformTo_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_faiss__RemapDimensionsTransform, _p_faiss__RemapDimensionsTransformTo_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_faiss__NormalizationTransform, _p_faiss__NormalizationTransformTo_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_faiss__CenteringTransform, _p_faiss__CenteringTransformTo_p_faiss__VectorTransform, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__VisitedTable[] = {  {&_swigt__p_faiss__VisitedTable, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ZnSphereCodec[] = {  {&_swigt__p_faiss__ZnSphereCodec, 0, 0, 0},  {&_swigt__p_faiss__ZnSphereCodecAlt, _p_faiss__ZnSphereCodecAltTo_p_faiss__ZnSphereCodec, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ZnSphereCodecAlt[] = {  {&_swigt__p_faiss__ZnSphereCodecAlt, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ZnSphereCodecRec[] = {  {&_swigt__p_faiss__ZnSphereCodecRec, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ZnSphereSearch[] = {  {&_swigt__p_faiss__ZnSphereSearch, 0, 0, 0},  {&_swigt__p_faiss__ZnSphereCodec, _p_faiss__ZnSphereCodecTo_p_faiss__ZnSphereSearch, 0, 0},  {&_swigt__p_faiss__ZnSphereCodecAlt, _p_faiss__ZnSphereCodecAltTo_p_faiss__ZnSphereSearch, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__AllocInfo[] = {  {&_swigt__p_faiss__gpu__AllocInfo, 0, 0, 0},  {&_swigt__p_faiss__gpu__AllocRequest, _p_faiss__gpu__AllocRequestTo_p_faiss__gpu__AllocInfo, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__AllocRequest[] = {  {&_swigt__p_faiss__gpu__AllocRequest, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__FlatIndex[] = {  {&_swigt__p_faiss__gpu__FlatIndex, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuClonerOptions[] = {  {&_swigt__p_faiss__gpu__ToGpuCloner, _p_faiss__gpu__ToGpuClonerTo_p_faiss__gpu__GpuClonerOptions, 0, 0},  {&_swigt__p_faiss__gpu__GpuClonerOptions, 0, 0, 0},  {&_swigt__p_faiss__gpu__GpuMultipleClonerOptions, _p_faiss__gpu__GpuMultipleClonerOptionsTo_p_faiss__gpu__GpuClonerOptions, 0, 0},  {&_swigt__p_faiss__gpu__ToGpuClonerMultiple, _p_faiss__gpu__ToGpuClonerMultipleTo_p_faiss__gpu__GpuClonerOptions, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuDistanceParams[] = {  {&_swigt__p_faiss__gpu__GpuDistanceParams, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIcmEncoder[] = {  {&_swigt__p_faiss__gpu__GpuIcmEncoder, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIcmEncoderFactory[] = {  {&_swigt__p_faiss__gpu__GpuIcmEncoderFactory, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndex[] = {  {&_swigt__p_faiss__gpu__GpuIndex, 0, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexFlat, _p_faiss__gpu__GpuIndexFlatTo_p_faiss__gpu__GpuIndex, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexFlatL2, _p_faiss__gpu__GpuIndexFlatL2To_p_faiss__gpu__GpuIndex, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVF, _p_faiss__gpu__GpuIndexIVFTo_p_faiss__gpu__GpuIndex, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFPQ, _p_faiss__gpu__GpuIndexIVFPQTo_p_faiss__gpu__GpuIndex, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFScalarQuantizer, _p_faiss__gpu__GpuIndexIVFScalarQuantizerTo_p_faiss__gpu__GpuIndex, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFFlat, _p_faiss__gpu__GpuIndexIVFFlatTo_p_faiss__gpu__GpuIndex, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexFlatIP, _p_faiss__gpu__GpuIndexFlatIPTo_p_faiss__gpu__GpuIndex, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexBinaryFlat[] = {  {&_swigt__p_faiss__gpu__GpuIndexBinaryFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexBinaryFlatConfig[] = {  {&_swigt__p_faiss__gpu__GpuIndexBinaryFlatConfig, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexConfig[] = {  {&_swigt__p_faiss__gpu__GpuIndexIVFPQConfig, _p_faiss__gpu__GpuIndexIVFPQConfigTo_p_faiss__gpu__GpuIndexConfig, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexConfig, 0, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexFlatConfig, _p_faiss__gpu__GpuIndexFlatConfigTo_p_faiss__gpu__GpuIndexConfig, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFConfig, _p_faiss__gpu__GpuIndexIVFConfigTo_p_faiss__gpu__GpuIndexConfig, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFFlatConfig, _p_faiss__gpu__GpuIndexIVFFlatConfigTo_p_faiss__gpu__GpuIndexConfig, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig, _p_faiss__gpu__GpuIndexIVFScalarQuantizerConfigTo_p_faiss__gpu__GpuIndexConfig, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexBinaryFlatConfig, _p_faiss__gpu__GpuIndexBinaryFlatConfigTo_p_faiss__gpu__GpuIndexConfig, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexFlat[] = {  {&_swigt__p_faiss__gpu__GpuIndexFlat, 0, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexFlatL2, _p_faiss__gpu__GpuIndexFlatL2To_p_faiss__gpu__GpuIndexFlat, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexFlatIP, _p_faiss__gpu__GpuIndexFlatIPTo_p_faiss__gpu__GpuIndexFlat, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexFlatConfig[] = {  {&_swigt__p_faiss__gpu__GpuIndexFlatConfig, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexFlatIP[] = {  {&_swigt__p_faiss__gpu__GpuIndexFlatIP, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexFlatL2[] = {  {&_swigt__p_faiss__gpu__GpuIndexFlatL2, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexIVF[] = {  {&_swigt__p_faiss__gpu__GpuIndexIVF, 0, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFPQ, _p_faiss__gpu__GpuIndexIVFPQTo_p_faiss__gpu__GpuIndexIVF, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFScalarQuantizer, _p_faiss__gpu__GpuIndexIVFScalarQuantizerTo_p_faiss__gpu__GpuIndexIVF, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFFlat, _p_faiss__gpu__GpuIndexIVFFlatTo_p_faiss__gpu__GpuIndexIVF, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexIVFConfig[] = {  {&_swigt__p_faiss__gpu__GpuIndexIVFPQConfig, _p_faiss__gpu__GpuIndexIVFPQConfigTo_p_faiss__gpu__GpuIndexIVFConfig, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFConfig, 0, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFFlatConfig, _p_faiss__gpu__GpuIndexIVFFlatConfigTo_p_faiss__gpu__GpuIndexIVFConfig, 0, 0},  {&_swigt__p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig, _p_faiss__gpu__GpuIndexIVFScalarQuantizerConfigTo_p_faiss__gpu__GpuIndexIVFConfig, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexIVFFlat[] = {  {&_swigt__p_faiss__gpu__GpuIndexIVFFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexIVFFlatConfig[] = {  {&_swigt__p_faiss__gpu__GpuIndexIVFFlatConfig, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexIVFPQ[] = {  {&_swigt__p_faiss__gpu__GpuIndexIVFPQ, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexIVFPQConfig[] = {  {&_swigt__p_faiss__gpu__GpuIndexIVFPQConfig, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexIVFScalarQuantizer[] = {  {&_swigt__p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig[] = {  {&_swigt__p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuMultipleClonerOptions[] = {  {&_swigt__p_faiss__gpu__GpuMultipleClonerOptions, 0, 0, 0},  {&_swigt__p_faiss__gpu__ToGpuClonerMultiple, _p_faiss__gpu__ToGpuClonerMultipleTo_p_faiss__gpu__GpuMultipleClonerOptions, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuParameterSpace[] = {  {&_swigt__p_faiss__gpu__GpuParameterSpace, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuProgressiveDimIndexFactory[] = {  {&_swigt__p_faiss__gpu__GpuProgressiveDimIndexFactory, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuResources[] = {  {&_swigt__p_faiss__gpu__StandardGpuResourcesImpl, _p_faiss__gpu__StandardGpuResourcesImplTo_p_faiss__gpu__GpuResources, 0, 0},  {&_swigt__p_faiss__gpu__GpuResources, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__GpuResourcesProvider[] = {  {&_swigt__p_faiss__gpu__GpuResourcesProvider, 0, 0, 0},  {&_swigt__p_faiss__gpu__StandardGpuResources, _p_faiss__gpu__StandardGpuResourcesTo_p_faiss__gpu__GpuResourcesProvider, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__StandardGpuResources[] = {  {&_swigt__p_faiss__gpu__StandardGpuResources, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__StandardGpuResourcesImpl[] = {  {&_swigt__p_faiss__gpu__StandardGpuResourcesImpl, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__ToCPUCloner[] = {  {&_swigt__p_faiss__gpu__ToCPUCloner, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__ToGpuCloner[] = {  {&_swigt__p_faiss__gpu__ToGpuCloner, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__gpu__ToGpuClonerMultiple[] = {  {&_swigt__p_faiss__gpu__ToGpuClonerMultiple, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__ivflib__SlidingIndexWindow[] = {  {&_swigt__p_faiss__ivflib__SlidingIndexWindow, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__lsq__IcmEncoder[] = {  {&_swigt__p_faiss__lsq__IcmEncoder, 0, 0, 0},  {&_swigt__p_faiss__gpu__GpuIcmEncoder, _p_faiss__gpu__GpuIcmEncoderTo_p_faiss__lsq__IcmEncoder, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__lsq__IcmEncoderFactory[] = {  {&_swigt__p_faiss__lsq__IcmEncoderFactory, 0, 0, 0},  {&_swigt__p_faiss__gpu__GpuIcmEncoderFactory, _p_faiss__gpu__GpuIcmEncoderFactoryTo_p_faiss__lsq__IcmEncoderFactory, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__lsq__LSQTimer[] = {  {&_swigt__p_faiss__lsq__LSQTimer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__lsq__LSQTimerScope[] = {  {&_swigt__p_faiss__lsq__LSQTimerScope, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__nndescent__Neighbor[] = {  {&_swigt__p_faiss__nndescent__Neighbor, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__nndescent__Nhood[] = {  {&_swigt__p_faiss__nndescent__Nhood, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__nsg__GraphT_faiss__Node_t[] = {  {&_swigt__p_faiss__nsg__GraphT_faiss__Node_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_faiss__nsg__GraphT_long_t[] = {  {&_swigt__p_faiss__nsg__GraphT_long_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_first_type[] = {  {&_swigt__p_first_type, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_float[] = {  {&_swigt__p_float, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_hipblasHandle_t[] = {  {&_swigt__p_hipblasHandle_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_idx_t[] = {  {&_swigt__p_idx_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_ihipStream_t[] = {  {&_swigt__p_ihipStream_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_int[] = {  {&_swigt__p_int, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_key_type[] = {  {&_swigt__p_key_type, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_long[] = {  {&_swigt__p_long, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_mapped_type[] = {  {&_swigt__p_mapped_type, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_omp_lock_t[] = {  {&_swigt__p_omp_lock_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexPQ[] = {{&_swigt__p_p_faiss__IndexPQ, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexRefine[] = {{&_swigt__p_p_faiss__IndexRefine, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexIVFFlatDedup[] = {{&_swigt__p_p_faiss__IndexIVFFlatDedup, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexPQFastScan[] = {{&_swigt__p_p_faiss__IndexPQFastScan, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexIVFPQFastScan[] = {{&_swigt__p_p_faiss__IndexIVFPQFastScan, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexPreTransform[] = {{&_swigt__p_p_faiss__IndexPreTransform, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexNSGFlat[] = {{&_swigt__p_p_faiss__IndexNSGFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexSplitVectors[] = {{&_swigt__p_p_faiss__IndexSplitVectors, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexIVFFlat[] = {{&_swigt__p_p_faiss__IndexIVFFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__gpu__GpuIndexIVFFlat[] = {{&_swigt__p_p_faiss__gpu__GpuIndexIVFFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexIVFAdditiveQuantizer[] = {{&_swigt__p_p_faiss__IndexIVFAdditiveQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexIVFResidualQuantizer[] = {{&_swigt__p_p_faiss__IndexIVFResidualQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexIVFLocalSearchQuantizer[] = {{&_swigt__p_p_faiss__IndexIVFLocalSearchQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexIVFScalarQuantizer[] = {{&_swigt__p_p_faiss__IndexIVFScalarQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexScalarQuantizer[] = {{&_swigt__p_p_faiss__IndexScalarQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__LocalSearchCoarseQuantizer[] = {{&_swigt__p_p_faiss__LocalSearchCoarseQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__ResidualCoarseQuantizer[] = {{&_swigt__p_p_faiss__ResidualCoarseQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__AdditiveCoarseQuantizer[] = {{&_swigt__p_p_faiss__AdditiveCoarseQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexLocalSearchQuantizer[] = {{&_swigt__p_p_faiss__IndexLocalSearchQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__MultiIndexQuantizer[] = {{&_swigt__p_p_faiss__MultiIndexQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__gpu__GpuIndexIVFScalarQuantizer[] = {{&_swigt__p_p_faiss__gpu__GpuIndexIVFScalarQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexResidualQuantizer[] = {{&_swigt__p_p_faiss__IndexResidualQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexAdditiveQuantizer[] = {{&_swigt__p_p_faiss__IndexAdditiveQuantizer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexRefineFlat[] = {{&_swigt__p_p_faiss__IndexRefineFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexIVFPQ[] = {{&_swigt__p_p_faiss__IndexIVFPQ, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__gpu__GpuIndexIVFPQ[] = {{&_swigt__p_p_faiss__gpu__GpuIndexIVFPQ, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexLSH[] = {{&_swigt__p_p_faiss__IndexLSH, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexHNSWSQ[] = {{&_swigt__p_p_faiss__IndexHNSWSQ, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__gpu__GpuIndex[] = {{&_swigt__p_p_faiss__gpu__GpuIndex, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexHNSW2Level[] = {{&_swigt__p_p_faiss__IndexHNSW2Level, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__Index2Layer[] = {{&_swigt__p_p_faiss__Index2Layer, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexFlatL2[] = {{&_swigt__p_p_faiss__IndexFlatL2, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__gpu__GpuIndexFlatL2[] = {{&_swigt__p_p_faiss__gpu__GpuIndexFlatL2, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexHNSWFlat[] = {{&_swigt__p_p_faiss__IndexHNSWFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexIVFPQR[] = {{&_swigt__p_p_faiss__IndexIVFPQR, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexFlat1D[] = {{&_swigt__p_p_faiss__IndexFlat1D, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexNNDescentFlat[] = {{&_swigt__p_p_faiss__IndexNNDescentFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexFlat[] = {{&_swigt__p_p_faiss__IndexFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexFlatIP[] = {{&_swigt__p_p_faiss__IndexFlatIP, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexNSG[] = {{&_swigt__p_p_faiss__IndexNSG, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__gpu__GpuIndexFlat[] = {{&_swigt__p_p_faiss__gpu__GpuIndexFlat, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__gpu__GpuIndexFlatIP[] = {{&_swigt__p_p_faiss__gpu__GpuIndexFlatIP, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexFlatCodes[] = {{&_swigt__p_p_faiss__IndexFlatCodes, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexNNDescent[] = {{&_swigt__p_p_faiss__IndexNNDescent, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexHNSW[] = {{&_swigt__p_p_faiss__IndexHNSW, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexHNSWPQ[] = {{&_swigt__p_p_faiss__IndexHNSWPQ, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexLattice[] = {{&_swigt__p_p_faiss__IndexLattice, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexIVFSpectralHash[] = {{&_swigt__p_p_faiss__IndexIVFSpectralHash, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexIVF[] = {{&_swigt__p_p_faiss__IndexIVF, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__gpu__GpuIndexIVF[] = {{&_swigt__p_p_faiss__gpu__GpuIndexIVF, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__MultiIndexQuantizer2[] = {{&_swigt__p_p_faiss__MultiIndexQuantizer2, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__ThreadedIndexT_faiss__Index_t[] = {{&_swigt__p_p_faiss__ThreadedIndexT_faiss__Index_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexShardsTemplateT_faiss__Index_t[] = {{&_swigt__p_p_faiss__IndexShardsTemplateT_faiss__Index_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexReplicasTemplateT_faiss__Index_t[] = {{&_swigt__p_p_faiss__IndexReplicasTemplateT_faiss__Index_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexIDMapTemplateT_faiss__Index_t[] = {{&_swigt__p_p_faiss__IndexIDMapTemplateT_faiss__Index_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__IndexIDMap2TemplateT_faiss__Index_t[] = {{&_swigt__p_p_faiss__IndexIDMap2TemplateT_faiss__Index_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__Index[] = {  {&_swigt__p_p_faiss__IndexPQ, _p_p_faiss__IndexPQTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexRefine, _p_p_faiss__IndexRefineTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexIVFFlatDedup, _p_p_faiss__IndexIVFFlatDedupTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexPQFastScan, _p_p_faiss__IndexPQFastScanTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexIVFPQFastScan, _p_p_faiss__IndexIVFPQFastScanTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexPreTransform, _p_p_faiss__IndexPreTransformTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexNSGFlat, _p_p_faiss__IndexNSGFlatTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__Index, 0, 0, 0},  {&_swigt__p_p_faiss__IndexSplitVectors, _p_p_faiss__IndexSplitVectorsTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexIVFFlat, _p_p_faiss__IndexIVFFlatTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__gpu__GpuIndexIVFFlat, _p_p_faiss__gpu__GpuIndexIVFFlatTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexIVFAdditiveQuantizer, _p_p_faiss__IndexIVFAdditiveQuantizerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexIVFResidualQuantizer, _p_p_faiss__IndexIVFResidualQuantizerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexIVFLocalSearchQuantizer, _p_p_faiss__IndexIVFLocalSearchQuantizerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexIVFScalarQuantizer, _p_p_faiss__IndexIVFScalarQuantizerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexScalarQuantizer, _p_p_faiss__IndexScalarQuantizerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__LocalSearchCoarseQuantizer, _p_p_faiss__LocalSearchCoarseQuantizerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__ResidualCoarseQuantizer, _p_p_faiss__ResidualCoarseQuantizerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__AdditiveCoarseQuantizer, _p_p_faiss__AdditiveCoarseQuantizerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexLocalSearchQuantizer, _p_p_faiss__IndexLocalSearchQuantizerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__MultiIndexQuantizer, _p_p_faiss__MultiIndexQuantizerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__gpu__GpuIndexIVFScalarQuantizer, _p_p_faiss__gpu__GpuIndexIVFScalarQuantizerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexResidualQuantizer, _p_p_faiss__IndexResidualQuantizerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexAdditiveQuantizer, _p_p_faiss__IndexAdditiveQuantizerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexRefineFlat, _p_p_faiss__IndexRefineFlatTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexIVFPQ, _p_p_faiss__IndexIVFPQTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__gpu__GpuIndexIVFPQ, _p_p_faiss__gpu__GpuIndexIVFPQTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexLSH, _p_p_faiss__IndexLSHTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexHNSWSQ, _p_p_faiss__IndexHNSWSQTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__gpu__GpuIndex, _p_p_faiss__gpu__GpuIndexTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexHNSW2Level, _p_p_faiss__IndexHNSW2LevelTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__Index2Layer, _p_p_faiss__Index2LayerTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexFlatL2, _p_p_faiss__IndexFlatL2To_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__gpu__GpuIndexFlatL2, _p_p_faiss__gpu__GpuIndexFlatL2To_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexHNSWFlat, _p_p_faiss__IndexHNSWFlatTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexIVFPQR, _p_p_faiss__IndexIVFPQRTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexFlat1D, _p_p_faiss__IndexFlat1DTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexNNDescentFlat, _p_p_faiss__IndexNNDescentFlatTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexFlat, _p_p_faiss__IndexFlatTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexFlatIP, _p_p_faiss__IndexFlatIPTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexNSG, _p_p_faiss__IndexNSGTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__gpu__GpuIndexFlat, _p_p_faiss__gpu__GpuIndexFlatTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__gpu__GpuIndexFlatIP, _p_p_faiss__gpu__GpuIndexFlatIPTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexFlatCodes, _p_p_faiss__IndexFlatCodesTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexNNDescent, _p_p_faiss__IndexNNDescentTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexHNSW, _p_p_faiss__IndexHNSWTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexHNSWPQ, _p_p_faiss__IndexHNSWPQTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexLattice, _p_p_faiss__IndexLatticeTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexIVFSpectralHash, _p_p_faiss__IndexIVFSpectralHashTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexIVF, _p_p_faiss__IndexIVFTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__gpu__GpuIndexIVF, _p_p_faiss__gpu__GpuIndexIVFTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__MultiIndexQuantizer2, _p_p_faiss__MultiIndexQuantizer2To_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__ThreadedIndexT_faiss__Index_t, _p_p_faiss__ThreadedIndexT_faiss__Index_tTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexShardsTemplateT_faiss__Index_t, _p_p_faiss__IndexShardsTemplateT_faiss__Index_tTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexReplicasTemplateT_faiss__Index_t, _p_p_faiss__IndexReplicasTemplateT_faiss__Index_tTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexIDMapTemplateT_faiss__Index_t, _p_p_faiss__IndexIDMapTemplateT_faiss__Index_tTo_p_p_faiss__Index, 0, 0},  {&_swigt__p_p_faiss__IndexIDMap2TemplateT_faiss__Index_t, _p_p_faiss__IndexIDMap2TemplateT_faiss__Index_tTo_p_p_faiss__Index, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__ArrayInvertedLists[] = {{&_swigt__p_p_faiss__ArrayInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__ReadOnlyInvertedLists[] = {{&_swigt__p_p_faiss__ReadOnlyInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__HStackInvertedLists[] = {{&_swigt__p_p_faiss__HStackInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__SliceInvertedLists[] = {{&_swigt__p_p_faiss__SliceInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__VStackInvertedLists[] = {{&_swigt__p_p_faiss__VStackInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__MaskedInvertedLists[] = {{&_swigt__p_p_faiss__MaskedInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__StopWordsInvertedLists[] = {{&_swigt__p_p_faiss__StopWordsInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__BlockInvertedLists[] = {{&_swigt__p_p_faiss__BlockInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__OnDiskInvertedLists[] = {{&_swigt__p_p_faiss__OnDiskInvertedLists, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__InvertedLists[] = {  {&_swigt__p_p_faiss__InvertedLists, 0, 0, 0},  {&_swigt__p_p_faiss__ArrayInvertedLists, _p_p_faiss__ArrayInvertedListsTo_p_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_p_faiss__ReadOnlyInvertedLists, _p_p_faiss__ReadOnlyInvertedListsTo_p_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_p_faiss__HStackInvertedLists, _p_p_faiss__HStackInvertedListsTo_p_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_p_faiss__SliceInvertedLists, _p_p_faiss__SliceInvertedListsTo_p_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_p_faiss__VStackInvertedLists, _p_p_faiss__VStackInvertedListsTo_p_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_p_faiss__MaskedInvertedLists, _p_p_faiss__MaskedInvertedListsTo_p_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_p_faiss__StopWordsInvertedLists, _p_p_faiss__StopWordsInvertedListsTo_p_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_p_faiss__BlockInvertedLists, _p_p_faiss__BlockInvertedListsTo_p_p_faiss__InvertedLists, 0, 0},  {&_swigt__p_p_faiss__OnDiskInvertedLists, _p_p_faiss__OnDiskInvertedListsTo_p_p_faiss__InvertedLists, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__RandomRotationMatrix[] = {{&_swigt__p_p_faiss__RandomRotationMatrix, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__PCAMatrix[] = {{&_swigt__p_p_faiss__PCAMatrix, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__ITQMatrix[] = {{&_swigt__p_p_faiss__ITQMatrix, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__OPQMatrix[] = {{&_swigt__p_p_faiss__OPQMatrix, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__LinearTransform[] = {{&_swigt__p_p_faiss__LinearTransform, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__ITQTransform[] = {{&_swigt__p_p_faiss__ITQTransform, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__RemapDimensionsTransform[] = {{&_swigt__p_p_faiss__RemapDimensionsTransform, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__NormalizationTransform[] = {{&_swigt__p_p_faiss__NormalizationTransform, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__CenteringTransform[] = {{&_swigt__p_p_faiss__CenteringTransform, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__VectorTransform[] = {  {&_swigt__p_p_faiss__RandomRotationMatrix, _p_p_faiss__RandomRotationMatrixTo_p_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_p_faiss__PCAMatrix, _p_p_faiss__PCAMatrixTo_p_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_p_faiss__ITQMatrix, _p_p_faiss__ITQMatrixTo_p_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_p_faiss__OPQMatrix, _p_p_faiss__OPQMatrixTo_p_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_p_faiss__VectorTransform, 0, 0, 0},  {&_swigt__p_p_faiss__LinearTransform, _p_p_faiss__LinearTransformTo_p_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_p_faiss__ITQTransform, _p_p_faiss__ITQTransformTo_p_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_p_faiss__RemapDimensionsTransform, _p_p_faiss__RemapDimensionsTransformTo_p_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_p_faiss__NormalizationTransform, _p_p_faiss__NormalizationTransformTo_p_p_faiss__VectorTransform, 0, 0},  {&_swigt__p_p_faiss__CenteringTransform, _p_p_faiss__CenteringTransformTo_p_p_faiss__VectorTransform, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__gpu__StandardGpuResources[] = {{&_swigt__p_p_faiss__gpu__StandardGpuResources, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_p_faiss__gpu__GpuResourcesProvider[] = {  {&_swigt__p_p_faiss__gpu__GpuResourcesProvider, 0, 0, 0},  {&_swigt__p_p_faiss__gpu__StandardGpuResources, _p_p_faiss__gpu__StandardGpuResourcesTo_p_p_faiss__gpu__GpuResourcesProvider, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_second_type[] = {  {&_swigt__p_second_type, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_short[] = {  {&_swigt__p_short, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_signed_char[] = {  {&_swigt__p_signed_char, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_size_type[] = {  {&_swigt__p_size_type, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__functionT_void_fint_faiss__IndexBinary_const_pF_t[] = {  {&_swigt__p_std__functionT_void_fint_faiss__IndexBinary_const_pF_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__functionT_void_fint_faiss__IndexBinary_pF_t[] = {  {&_swigt__p_std__functionT_void_fint_faiss__IndexBinary_pF_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__functionT_void_fint_faiss__Index_const_pF_t[] = {  {&_swigt__p_std__functionT_void_fint_faiss__Index_const_pF_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__functionT_void_fint_faiss__Index_pF_t[] = {  {&_swigt__p_std__functionT_void_fint_faiss__Index_pF_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__invalid_argument[] = {  {&_swigt__p_std__invalid_argument, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__listT_faiss__OnDiskInvertedLists__Slot_t[] = {  {&_swigt__p_std__listT_faiss__OnDiskInvertedLists__Slot_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__mt19937[] = {  {&_swigt__p_std__mt19937, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__pairT_float_int_t[] = {  {&_swigt__p_std__pairT_float_int_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__pairT_void_p_unsigned_long_t[] = {  {&_swigt__p_std__pairT_void_p_unsigned_long_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__priority_queueT_faiss__HNSW__NodeDistFarther_t[] = {  {&_swigt__p_std__priority_queueT_faiss__HNSW__NodeDistFarther_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__priority_queueT_std__pairT_float_int_t_t[] = {  {&_swigt__p_std__priority_queueT_std__pairT_float_int_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__shared_ptrT_faiss__gpu__GpuResources_t[] = {  {&_swigt__p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0, 0, 0},  {&_swigt__p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, _p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_tTo_p_std__shared_ptrT_faiss__gpu__GpuResources_t, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t[] = {  {&_swigt__p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__shared_ptrT_faiss__nsg__GraphT_int_t_t[] = {  {&_swigt__p_std__shared_ptrT_faiss__nsg__GraphT_int_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__unordered_mapT_long_faiss__IndexBinaryHash__InvertedList_t[] = {  {&_swigt__p_std__unordered_mapT_long_faiss__IndexBinaryHash__InvertedList_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__unordered_mapT_long_long_t[] = {  {&_swigt__p_std__unordered_mapT_long_long_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__unordered_mapT_std__string_double_t[] = {  {&_swigt__p_std__unordered_mapT_std__string_double_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__unordered_mapT_unsigned_long_faiss__MatrixStats__Occurrence_t[] = {  {&_swigt__p_std__unordered_mapT_unsigned_long_faiss__MatrixStats__Occurrence_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__unordered_multimapT_long_long_t[] = {  {&_swigt__p_std__unordered_multimapT_long_long_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_char_t[] = {  {&_swigt__p_std__vectorT_char_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_double_t[] = {  {&_swigt__p_std__vectorT_double_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__AlignedTableT_uint8_t_32_t_t[] = {  {&_swigt__p_std__vectorT_faiss__AlignedTableT_uint8_t_32_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__BufferList__Buffer_t[] = {  {&_swigt__p_std__vectorT_faiss__BufferList__Buffer_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__ClusteringIterationStats_t[] = {  {&_swigt__p_std__vectorT_faiss__ClusteringIterationStats_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__HNSW__NodeDistFarther_t[] = {  {&_swigt__p_std__vectorT_faiss__HNSW__NodeDistFarther_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__Index_p_t[] = {  {&_swigt__p_std__vectorT_faiss__Index_p_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__InvertedLists_const_p_t[] = {  {&_swigt__p_std__vectorT_faiss__InvertedLists_const_p_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__InvertedLists_p_t[] = {  {&_swigt__p_std__vectorT_faiss__InvertedLists_p_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__MatrixStats__PerDimStats_t[] = {  {&_swigt__p_std__vectorT_faiss__MatrixStats__PerDimStats_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__Node_t[] = {  {&_swigt__p_std__vectorT_faiss__Node_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__OnDiskOneList_t[] = {  {&_swigt__p_std__vectorT_faiss__OnDiskOneList_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__OperatingPoint_t[] = {  {&_swigt__p_std__vectorT_faiss__OperatingPoint_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__ParameterRange_t[] = {  {&_swigt__p_std__vectorT_faiss__ParameterRange_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__RangeQueryResult_t[] = {  {&_swigt__p_std__vectorT_faiss__RangeQueryResult_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__RangeSearchPartialResult_p_t[] = {  {&_swigt__p_std__vectorT_faiss__RangeSearchPartialResult_p_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__Repeat_t[] = {  {&_swigt__p_std__vectorT_faiss__Repeat_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__VectorTransform_p_t[] = {  {&_swigt__p_std__vectorT_faiss__VectorTransform_p_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__ZnSphereCodec__CodeSegment_t[] = {  {&_swigt__p_std__vectorT_faiss__ZnSphereCodec__CodeSegment_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t[] = {  {&_swigt__p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__gpu__ToGpuCloner_t[] = {  {&_swigt__p_std__vectorT_faiss__gpu__ToGpuCloner_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__nndescent__Neighbor_t[] = {  {&_swigt__p_std__vectorT_faiss__nndescent__Neighbor_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_faiss__nndescent__Nhood_t[] = {  {&_swigt__p_std__vectorT_faiss__nndescent__Nhood_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_float_t[] = {  {&_swigt__p_std__vectorT_float_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_ihipStream_t_p_t[] = {  {&_swigt__p_std__vectorT_ihipStream_t_p_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_int_t[] = {  {&_swigt__p_std__vectorT_int_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_long_t[] = {  {&_swigt__p_std__vectorT_long_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_omp_lock_t_t[] = {  {&_swigt__p_std__vectorT_omp_lock_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_short_t[] = {  {&_swigt__p_std__vectorT_short_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_signed_char_t[] = {  {&_swigt__p_std__vectorT_signed_char_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_std__mutex_t[] = {  {&_swigt__p_std__vectorT_std__mutex_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_std__unordered_mapT_long_std__vectorT_int64_t_t_t_t[] = {  {&_swigt__p_std__vectorT_std__unordered_mapT_long_std__vectorT_int64_t_t_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_std__vectorT_float_t_t[] = {  {&_swigt__p_std__vectorT_std__vectorT_float_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_std__vectorT_int32_t_t_t[] = {  {&_swigt__p_std__vectorT_std__vectorT_int32_t_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_std__vectorT_int64_t_t_t[] = {  {&_swigt__p_std__vectorT_std__vectorT_int64_t_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_std__vectorT_uint64_t_t_t[] = {  {&_swigt__p_std__vectorT_std__vectorT_uint64_t_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_std__vectorT_uint8_t_t_t[] = {  {&_swigt__p_std__vectorT_std__vectorT_uint8_t_t_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_unsigned_char_t[] = {  {&_swigt__p_std__vectorT_unsigned_char_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_unsigned_int_t[] = {  {&_swigt__p_std__vectorT_unsigned_int_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_unsigned_long_t[] = {  {&_swigt__p_std__vectorT_unsigned_long_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_std__vectorT_unsigned_short_t[] = {  {&_swigt__p_std__vectorT_unsigned_short_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_storage_idx_t[] = {  {&_swigt__p_storage_idx_t, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_swig__SwigPyIterator[] = {  {&_swigt__p_swig__SwigPyIterator, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_unsigned_char[] = {  {&_swigt__p_unsigned_char, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_unsigned_int[] = {  {&_swigt__p_unsigned_int, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_unsigned_long[] = {  {&_swigt__p_unsigned_long, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_unsigned_short[] = {  {&_swigt__p_unsigned_short, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_value_type[] = {  {&_swigt__p_value_type, 0, 0, 0},{0, 0, 0, 0}};
+static swig_cast_info _swigc__p_void[] = {  {&_swigt__p_void, 0, 0, 0},{0, 0, 0, 0}};
+
+static swig_cast_info *swig_cast_initial[] = {
+  _swigc__p_Crev,
+  _swigc__p_FILE,
+  _swigc__p_InvertedListMap,
+  _swigc__p_KNNGraph,
+  _swigc__p_List,
+  _swigc__p_Map,
+  _swigc__p_MapLong2Long,
+  _swigc__p_Node,
+  _swigc__p_PyCallbackIOReader,
+  _swigc__p_PyCallbackIOWriter,
+  _swigc__p_Search_type_t,
+  _swigc__p_T,
+  _swigc__p_TI,
+  _swigc__p_Type,
+  _swigc__p_allocator_type,
+  _swigc__p_char,
+  _swigc__p_component_t,
+  _swigc__p_difference_type,
+  _swigc__p_distance_t,
+  _swigc__p_double,
+  _swigc__p_faiss__AdditiveCoarseQuantizer,
+  _swigc__p_faiss__AdditiveQuantizer,
+  _swigc__p_faiss__AlignedTableT_float_32_t,
+  _swigc__p_faiss__AlignedTableT_unsigned_char_32_t,
+  _swigc__p_faiss__AlignedTableT_unsigned_short_32_t,
+  _swigc__p_faiss__AlignedTableTightAllocT_float_32_t,
+  _swigc__p_faiss__AlignedTableTightAllocT_unsigned_char_32_t,
+  _swigc__p_faiss__AlignedTableTightAllocT_unsigned_short_32_t,
+  _swigc__p_faiss__ArrayInvertedLists,
+  _swigc__p_faiss__AutoTuneCriterion,
+  _swigc__p_faiss__BinaryInvertedListScanner,
+  _swigc__p_faiss__BitstringReader,
+  _swigc__p_faiss__BitstringWriter,
+  _swigc__p_faiss__BlockInvertedLists,
+  _swigc__p_faiss__BlockInvertedListsIOHook,
+  _swigc__p_faiss__BufferList,
+  _swigc__p_faiss__BufferedIOReader,
+  _swigc__p_faiss__BufferedIOWriter,
+  _swigc__p_faiss__CenteringTransform,
+  _swigc__p_faiss__Cloner,
+  _swigc__p_faiss__Clustering,
+  _swigc__p_faiss__Clustering1D,
+  _swigc__p_faiss__ClusteringIterationStats,
+  _swigc__p_faiss__ClusteringParameters,
+  _swigc__p_faiss__DirectMap,
+  _swigc__p_faiss__DirectMapAdd,
+  _swigc__p_faiss__DistanceComputer,
+  _swigc__p_faiss__EnumeratedVectors,
+  _swigc__p_faiss__FastScanStats,
+  _swigc__p_faiss__FileIOReader,
+  _swigc__p_faiss__FileIOWriter,
+  _swigc__p_faiss__HNSW,
+  _swigc__p_faiss__HNSWStats,
+  _swigc__p_faiss__HNSW__MinimaxHeap,
+  _swigc__p_faiss__HStackInvertedLists,
+  _swigc__p_faiss__HeapArrayT_faiss__CMaxT_float_int64_t_t_t,
+  _swigc__p_faiss__HeapArrayT_faiss__CMaxT_int_int64_t_t_t,
+  _swigc__p_faiss__HeapArrayT_faiss__CMinT_float_int64_t_t_t,
+  _swigc__p_faiss__HeapArrayT_faiss__CMinT_int_int64_t_t_t,
+  _swigc__p_faiss__IDSelector,
+  _swigc__p_faiss__IDSelectorArray,
+  _swigc__p_faiss__IDSelectorBatch,
+  _swigc__p_faiss__IDSelectorRange,
+  _swigc__p_faiss__IOReader,
+  _swigc__p_faiss__IOWriter,
+  _swigc__p_faiss__ITQMatrix,
+  _swigc__p_faiss__ITQTransform,
+  _swigc__p_faiss__IVFFastScanStats,
+  _swigc__p_faiss__IVFPQSearchParameters,
+  _swigc__p_faiss__IVFSearchParameters,
+  _swigc__p_faiss__Index,
+  _swigc__p_faiss__Index2Layer,
+  _swigc__p_faiss__IndexAdditiveQuantizer,
+  _swigc__p_faiss__IndexBinary,
+  _swigc__p_faiss__IndexBinaryFlat,
+  _swigc__p_faiss__IndexBinaryFromFloat,
+  _swigc__p_faiss__IndexBinaryHNSW,
+  _swigc__p_faiss__IndexBinaryHash,
+  _swigc__p_faiss__IndexBinaryHashStats,
+  _swigc__p_faiss__IndexBinaryIVF,
+  _swigc__p_faiss__IndexBinaryMultiHash,
+  _swigc__p_faiss__IndexFlat,
+  _swigc__p_faiss__IndexFlat1D,
+  _swigc__p_faiss__IndexFlatCodes,
+  _swigc__p_faiss__IndexFlatIP,
+  _swigc__p_faiss__IndexFlatL2,
+  _swigc__p_faiss__IndexHNSW,
+  _swigc__p_faiss__IndexHNSW2Level,
+  _swigc__p_faiss__IndexHNSWFlat,
+  _swigc__p_faiss__IndexHNSWPQ,
+  _swigc__p_faiss__IndexHNSWSQ,
+  _swigc__p_faiss__IndexIDMap2TemplateT_faiss__IndexBinary_t,
+  _swigc__p_faiss__IndexIDMap2TemplateT_faiss__Index_t,
+  _swigc__p_faiss__IndexIDMapTemplateT_faiss__IndexBinary_t,
+  _swigc__p_faiss__IndexIDMapTemplateT_faiss__Index_t,
+  _swigc__p_faiss__IndexIVF,
+  _swigc__p_faiss__IndexIVFAdditiveQuantizer,
+  _swigc__p_faiss__IndexIVFFlat,
+  _swigc__p_faiss__IndexIVFFlatDedup,
+  _swigc__p_faiss__IndexIVFLocalSearchQuantizer,
+  _swigc__p_faiss__IndexIVFPQ,
+  _swigc__p_faiss__IndexIVFPQFastScan,
+  _swigc__p_faiss__IndexIVFPQR,
+  _swigc__p_faiss__IndexIVFPQStats,
+  _swigc__p_faiss__IndexIVFResidualQuantizer,
+  _swigc__p_faiss__IndexIVFScalarQuantizer,
+  _swigc__p_faiss__IndexIVFSpectralHash,
+  _swigc__p_faiss__IndexIVFStats,
+  _swigc__p_faiss__IndexLSH,
+  _swigc__p_faiss__IndexLattice,
+  _swigc__p_faiss__IndexLocalSearchQuantizer,
+  _swigc__p_faiss__IndexNNDescent,
+  _swigc__p_faiss__IndexNNDescentFlat,
+  _swigc__p_faiss__IndexNSG,
+  _swigc__p_faiss__IndexNSGFlat,
+  _swigc__p_faiss__IndexPQ,
+  _swigc__p_faiss__IndexPQFastScan,
+  _swigc__p_faiss__IndexPQStats,
+  _swigc__p_faiss__IndexPreTransform,
+  _swigc__p_faiss__IndexRefine,
+  _swigc__p_faiss__IndexRefineFlat,
+  _swigc__p_faiss__IndexReplicasTemplateT_faiss__IndexBinary_t,
+  _swigc__p_faiss__IndexReplicasTemplateT_faiss__Index_t,
+  _swigc__p_faiss__IndexResidualQuantizer,
+  _swigc__p_faiss__IndexScalarQuantizer,
+  _swigc__p_faiss__IndexShardsTemplateT_faiss__IndexBinary_t,
+  _swigc__p_faiss__IndexShardsTemplateT_faiss__Index_t,
+  _swigc__p_faiss__IndexSplitVectors,
+  _swigc__p_faiss__InterruptCallback,
+  _swigc__p_faiss__IntersectionCriterion,
+  _swigc__p_faiss__InvertedListScanner,
+  _swigc__p_faiss__InvertedLists,
+  _swigc__p_faiss__InvertedListsIOHook,
+  _swigc__p_faiss__Level1Quantizer,
+  _swigc__p_faiss__LinearTransform,
+  _swigc__p_faiss__LocalSearchCoarseQuantizer,
+  _swigc__p_faiss__LocalSearchQuantizer,
+  _swigc__p_faiss__LockLevels,
+  _swigc__p_faiss__MaskedInvertedLists,
+  _swigc__p_faiss__MatrixStats,
+  _swigc__p_faiss__MultiIndexQuantizer,
+  _swigc__p_faiss__MultiIndexQuantizer2,
+  _swigc__p_faiss__NNDescent,
+  _swigc__p_faiss__NSG,
+  _swigc__p_faiss__NormalizationTransform,
+  _swigc__p_faiss__OPQMatrix,
+  _swigc__p_faiss__OnDiskInvertedLists,
+  _swigc__p_faiss__OnDiskInvertedListsIOHook,
+  _swigc__p_faiss__OnDiskInvertedLists__OngoingPrefetch,
+  _swigc__p_faiss__OnDiskOneList,
+  _swigc__p_faiss__OneRecallAtRCriterion,
+  _swigc__p_faiss__OperatingPoint,
+  _swigc__p_faiss__OperatingPoints,
+  _swigc__p_faiss__PCAMatrix,
+  _swigc__p_faiss__PQDecoder16,
+  _swigc__p_faiss__PQDecoder8,
+  _swigc__p_faiss__PQDecoderGeneric,
+  _swigc__p_faiss__PQEncoder16,
+  _swigc__p_faiss__PQEncoder8,
+  _swigc__p_faiss__PQEncoderGeneric,
+  _swigc__p_faiss__ParameterRange,
+  _swigc__p_faiss__ParameterSpace,
+  _swigc__p_faiss__PartitionStats,
+  _swigc__p_faiss__PermutationObjective,
+  _swigc__p_faiss__PolysemousTraining,
+  _swigc__p_faiss__ProductQuantizer,
+  _swigc__p_faiss__ProgressiveDimClustering,
+  _swigc__p_faiss__ProgressiveDimClusteringParameters,
+  _swigc__p_faiss__ProgressiveDimIndexFactory,
+  _swigc__p_faiss__RandomGenerator,
+  _swigc__p_faiss__RandomRotationMatrix,
+  _swigc__p_faiss__RangeQueryResult,
+  _swigc__p_faiss__RangeSearchPartialResult,
+  _swigc__p_faiss__RangeSearchResult,
+  _swigc__p_faiss__ReadOnlyInvertedLists,
+  _swigc__p_faiss__ReconstructFromNeighbors,
+  _swigc__p_faiss__RemapDimensionsTransform,
+  _swigc__p_faiss__Repeat,
+  _swigc__p_faiss__Repeats,
+  _swigc__p_faiss__ReproduceDistancesObjective,
+  _swigc__p_faiss__ResidualCoarseQuantizer,
+  _swigc__p_faiss__ResidualQuantizer,
+  _swigc__p_faiss__ScalarQuantizer,
+  _swigc__p_faiss__ScalarQuantizer__Quantizer,
+  _swigc__p_faiss__ScalarQuantizer__SQDistanceComputer,
+  _swigc__p_faiss__SimulatedAnnealingOptimizer,
+  _swigc__p_faiss__SimulatedAnnealingParameters,
+  _swigc__p_faiss__SliceInvertedLists,
+  _swigc__p_faiss__StopWordsInvertedLists,
+  _swigc__p_faiss__ThreadedIndexT_faiss__IndexBinary_t,
+  _swigc__p_faiss__ThreadedIndexT_faiss__Index_t,
+  _swigc__p_faiss__VStackInvertedLists,
+  _swigc__p_faiss__VectorIOReader,
+  _swigc__p_faiss__VectorIOWriter,
+  _swigc__p_faiss__VectorTransform,
+  _swigc__p_faiss__VisitedTable,
+  _swigc__p_faiss__ZnSphereCodec,
+  _swigc__p_faiss__ZnSphereCodecAlt,
+  _swigc__p_faiss__ZnSphereCodecRec,
+  _swigc__p_faiss__ZnSphereSearch,
+  _swigc__p_faiss__gpu__AllocInfo,
+  _swigc__p_faiss__gpu__AllocRequest,
+  _swigc__p_faiss__gpu__FlatIndex,
+  _swigc__p_faiss__gpu__GpuClonerOptions,
+  _swigc__p_faiss__gpu__GpuDistanceParams,
+  _swigc__p_faiss__gpu__GpuIcmEncoder,
+  _swigc__p_faiss__gpu__GpuIcmEncoderFactory,
+  _swigc__p_faiss__gpu__GpuIndex,
+  _swigc__p_faiss__gpu__GpuIndexBinaryFlat,
+  _swigc__p_faiss__gpu__GpuIndexBinaryFlatConfig,
+  _swigc__p_faiss__gpu__GpuIndexConfig,
+  _swigc__p_faiss__gpu__GpuIndexFlat,
+  _swigc__p_faiss__gpu__GpuIndexFlatConfig,
+  _swigc__p_faiss__gpu__GpuIndexFlatIP,
+  _swigc__p_faiss__gpu__GpuIndexFlatL2,
+  _swigc__p_faiss__gpu__GpuIndexIVF,
+  _swigc__p_faiss__gpu__GpuIndexIVFConfig,
+  _swigc__p_faiss__gpu__GpuIndexIVFFlat,
+  _swigc__p_faiss__gpu__GpuIndexIVFFlatConfig,
+  _swigc__p_faiss__gpu__GpuIndexIVFPQ,
+  _swigc__p_faiss__gpu__GpuIndexIVFPQConfig,
+  _swigc__p_faiss__gpu__GpuIndexIVFScalarQuantizer,
+  _swigc__p_faiss__gpu__GpuIndexIVFScalarQuantizerConfig,
+  _swigc__p_faiss__gpu__GpuMultipleClonerOptions,
+  _swigc__p_faiss__gpu__GpuParameterSpace,
+  _swigc__p_faiss__gpu__GpuProgressiveDimIndexFactory,
+  _swigc__p_faiss__gpu__GpuResources,
+  _swigc__p_faiss__gpu__GpuResourcesProvider,
+  _swigc__p_faiss__gpu__StandardGpuResources,
+  _swigc__p_faiss__gpu__StandardGpuResourcesImpl,
+  _swigc__p_faiss__gpu__ToCPUCloner,
+  _swigc__p_faiss__gpu__ToGpuCloner,
+  _swigc__p_faiss__gpu__ToGpuClonerMultiple,
+  _swigc__p_faiss__ivflib__SlidingIndexWindow,
+  _swigc__p_faiss__lsq__IcmEncoder,
+  _swigc__p_faiss__lsq__IcmEncoderFactory,
+  _swigc__p_faiss__lsq__LSQTimer,
+  _swigc__p_faiss__lsq__LSQTimerScope,
+  _swigc__p_faiss__nndescent__Neighbor,
+  _swigc__p_faiss__nndescent__Nhood,
+  _swigc__p_faiss__nsg__GraphT_faiss__Node_t,
+  _swigc__p_faiss__nsg__GraphT_long_t,
+  _swigc__p_first_type,
+  _swigc__p_float,
+  _swigc__p_hipblasHandle_t,
+  _swigc__p_idx_t,
+  _swigc__p_ihipStream_t,
+  _swigc__p_int,
+  _swigc__p_key_type,
+  _swigc__p_long,
+  _swigc__p_mapped_type,
+  _swigc__p_omp_lock_t,
+  _swigc__p_p_faiss__AdditiveCoarseQuantizer,
+  _swigc__p_p_faiss__ArrayInvertedLists,
+  _swigc__p_p_faiss__BlockInvertedLists,
+  _swigc__p_p_faiss__CenteringTransform,
+  _swigc__p_p_faiss__HStackInvertedLists,
+  _swigc__p_p_faiss__ITQMatrix,
+  _swigc__p_p_faiss__ITQTransform,
+  _swigc__p_p_faiss__Index,
+  _swigc__p_p_faiss__Index2Layer,
+  _swigc__p_p_faiss__IndexAdditiveQuantizer,
+  _swigc__p_p_faiss__IndexFlat,
+  _swigc__p_p_faiss__IndexFlat1D,
+  _swigc__p_p_faiss__IndexFlatCodes,
+  _swigc__p_p_faiss__IndexFlatIP,
+  _swigc__p_p_faiss__IndexFlatL2,
+  _swigc__p_p_faiss__IndexHNSW,
+  _swigc__p_p_faiss__IndexHNSW2Level,
+  _swigc__p_p_faiss__IndexHNSWFlat,
+  _swigc__p_p_faiss__IndexHNSWPQ,
+  _swigc__p_p_faiss__IndexHNSWSQ,
+  _swigc__p_p_faiss__IndexIDMap2TemplateT_faiss__Index_t,
+  _swigc__p_p_faiss__IndexIDMapTemplateT_faiss__Index_t,
+  _swigc__p_p_faiss__IndexIVF,
+  _swigc__p_p_faiss__IndexIVFAdditiveQuantizer,
+  _swigc__p_p_faiss__IndexIVFFlat,
+  _swigc__p_p_faiss__IndexIVFFlatDedup,
+  _swigc__p_p_faiss__IndexIVFLocalSearchQuantizer,
+  _swigc__p_p_faiss__IndexIVFPQ,
+  _swigc__p_p_faiss__IndexIVFPQFastScan,
+  _swigc__p_p_faiss__IndexIVFPQR,
+  _swigc__p_p_faiss__IndexIVFResidualQuantizer,
+  _swigc__p_p_faiss__IndexIVFScalarQuantizer,
+  _swigc__p_p_faiss__IndexIVFSpectralHash,
+  _swigc__p_p_faiss__IndexLSH,
+  _swigc__p_p_faiss__IndexLattice,
+  _swigc__p_p_faiss__IndexLocalSearchQuantizer,
+  _swigc__p_p_faiss__IndexNNDescent,
+  _swigc__p_p_faiss__IndexNNDescentFlat,
+  _swigc__p_p_faiss__IndexNSG,
+  _swigc__p_p_faiss__IndexNSGFlat,
+  _swigc__p_p_faiss__IndexPQ,
+  _swigc__p_p_faiss__IndexPQFastScan,
+  _swigc__p_p_faiss__IndexPreTransform,
+  _swigc__p_p_faiss__IndexRefine,
+  _swigc__p_p_faiss__IndexRefineFlat,
+  _swigc__p_p_faiss__IndexReplicasTemplateT_faiss__Index_t,
+  _swigc__p_p_faiss__IndexResidualQuantizer,
+  _swigc__p_p_faiss__IndexScalarQuantizer,
+  _swigc__p_p_faiss__IndexShardsTemplateT_faiss__Index_t,
+  _swigc__p_p_faiss__IndexSplitVectors,
+  _swigc__p_p_faiss__InvertedLists,
+  _swigc__p_p_faiss__LinearTransform,
+  _swigc__p_p_faiss__LocalSearchCoarseQuantizer,
+  _swigc__p_p_faiss__MaskedInvertedLists,
+  _swigc__p_p_faiss__MultiIndexQuantizer,
+  _swigc__p_p_faiss__MultiIndexQuantizer2,
+  _swigc__p_p_faiss__NormalizationTransform,
+  _swigc__p_p_faiss__OPQMatrix,
+  _swigc__p_p_faiss__OnDiskInvertedLists,
+  _swigc__p_p_faiss__PCAMatrix,
+  _swigc__p_p_faiss__RandomRotationMatrix,
+  _swigc__p_p_faiss__ReadOnlyInvertedLists,
+  _swigc__p_p_faiss__RemapDimensionsTransform,
+  _swigc__p_p_faiss__ResidualCoarseQuantizer,
+  _swigc__p_p_faiss__SliceInvertedLists,
+  _swigc__p_p_faiss__StopWordsInvertedLists,
+  _swigc__p_p_faiss__ThreadedIndexT_faiss__Index_t,
+  _swigc__p_p_faiss__VStackInvertedLists,
+  _swigc__p_p_faiss__VectorTransform,
+  _swigc__p_p_faiss__gpu__GpuIndex,
+  _swigc__p_p_faiss__gpu__GpuIndexFlat,
+  _swigc__p_p_faiss__gpu__GpuIndexFlatIP,
+  _swigc__p_p_faiss__gpu__GpuIndexFlatL2,
+  _swigc__p_p_faiss__gpu__GpuIndexIVF,
+  _swigc__p_p_faiss__gpu__GpuIndexIVFFlat,
+  _swigc__p_p_faiss__gpu__GpuIndexIVFPQ,
+  _swigc__p_p_faiss__gpu__GpuIndexIVFScalarQuantizer,
+  _swigc__p_p_faiss__gpu__GpuResourcesProvider,
+  _swigc__p_p_faiss__gpu__StandardGpuResources,
+  _swigc__p_second_type,
+  _swigc__p_short,
+  _swigc__p_signed_char,
+  _swigc__p_size_type,
+  _swigc__p_std__functionT_void_fint_faiss__IndexBinary_const_pF_t,
+  _swigc__p_std__functionT_void_fint_faiss__IndexBinary_pF_t,
+  _swigc__p_std__functionT_void_fint_faiss__Index_const_pF_t,
+  _swigc__p_std__functionT_void_fint_faiss__Index_pF_t,
+  _swigc__p_std__invalid_argument,
+  _swigc__p_std__listT_faiss__OnDiskInvertedLists__Slot_t,
+  _swigc__p_std__mt19937,
+  _swigc__p_std__pairT_float_int_t,
+  _swigc__p_std__pairT_void_p_unsigned_long_t,
+  _swigc__p_std__priority_queueT_faiss__HNSW__NodeDistFarther_t,
+  _swigc__p_std__priority_queueT_std__pairT_float_int_t_t,
+  _swigc__p_std__shared_ptrT_faiss__gpu__GpuResources_t,
+  _swigc__p_std__shared_ptrT_faiss__gpu__StandardGpuResourcesImpl_t,
+  _swigc__p_std__shared_ptrT_faiss__nsg__GraphT_int_t_t,
+  _swigc__p_std__unordered_mapT_long_faiss__IndexBinaryHash__InvertedList_t,
+  _swigc__p_std__unordered_mapT_long_long_t,
+  _swigc__p_std__unordered_mapT_std__string_double_t,
+  _swigc__p_std__unordered_mapT_unsigned_long_faiss__MatrixStats__Occurrence_t,
+  _swigc__p_std__unordered_multimapT_long_long_t,
+  _swigc__p_std__vectorT_char_t,
+  _swigc__p_std__vectorT_double_t,
+  _swigc__p_std__vectorT_faiss__AlignedTableT_uint8_t_32_t_t,
+  _swigc__p_std__vectorT_faiss__BufferList__Buffer_t,
+  _swigc__p_std__vectorT_faiss__ClusteringIterationStats_t,
+  _swigc__p_std__vectorT_faiss__HNSW__NodeDistFarther_t,
+  _swigc__p_std__vectorT_faiss__Index_p_t,
+  _swigc__p_std__vectorT_faiss__InvertedLists_const_p_t,
+  _swigc__p_std__vectorT_faiss__InvertedLists_p_t,
+  _swigc__p_std__vectorT_faiss__MatrixStats__PerDimStats_t,
+  _swigc__p_std__vectorT_faiss__Node_t,
+  _swigc__p_std__vectorT_faiss__OnDiskOneList_t,
+  _swigc__p_std__vectorT_faiss__OperatingPoint_t,
+  _swigc__p_std__vectorT_faiss__ParameterRange_t,
+  _swigc__p_std__vectorT_faiss__RangeQueryResult_t,
+  _swigc__p_std__vectorT_faiss__RangeSearchPartialResult_p_t,
+  _swigc__p_std__vectorT_faiss__Repeat_t,
+  _swigc__p_std__vectorT_faiss__VectorTransform_p_t,
+  _swigc__p_std__vectorT_faiss__ZnSphereCodec__CodeSegment_t,
+  _swigc__p_std__vectorT_faiss__gpu__GpuResourcesProvider_p_t,
+  _swigc__p_std__vectorT_faiss__gpu__ToGpuCloner_t,
+  _swigc__p_std__vectorT_faiss__nndescent__Neighbor_t,
+  _swigc__p_std__vectorT_faiss__nndescent__Nhood_t,
+  _swigc__p_std__vectorT_float_t,
+  _swigc__p_std__vectorT_ihipStream_t_p_t,
+  _swigc__p_std__vectorT_int_t,
+  _swigc__p_std__vectorT_long_t,
+  _swigc__p_std__vectorT_omp_lock_t_t,
+  _swigc__p_std__vectorT_short_t,
+  _swigc__p_std__vectorT_signed_char_t,
+  _swigc__p_std__vectorT_std__mutex_t,
+  _swigc__p_std__vectorT_std__unordered_mapT_long_std__vectorT_int64_t_t_t_t,
+  _swigc__p_std__vectorT_std__vectorT_float_t_t,
+  _swigc__p_std__vectorT_std__vectorT_int32_t_t_t,
+  _swigc__p_std__vectorT_std__vectorT_int64_t_t_t,
+  _swigc__p_std__vectorT_std__vectorT_uint64_t_t_t,
+  _swigc__p_std__vectorT_std__vectorT_uint8_t_t_t,
+  _swigc__p_std__vectorT_unsigned_char_t,
+  _swigc__p_std__vectorT_unsigned_int_t,
+  _swigc__p_std__vectorT_unsigned_long_t,
+  _swigc__p_std__vectorT_unsigned_short_t,
+  _swigc__p_storage_idx_t,
+  _swigc__p_swig__SwigPyIterator,
+  _swigc__p_unsigned_char,
+  _swigc__p_unsigned_int,
+  _swigc__p_unsigned_long,
+  _swigc__p_unsigned_short,
+  _swigc__p_value_type,
+  _swigc__p_void,
+};
+
+
+/* -------- TYPE CONVERSION AND EQUIVALENCE RULES (END) -------- */
+
+static swig_const_info swig_const_table[] = {
+{0, 0, 0, 0.0, 0, 0}};
+
+#ifdef __cplusplus
+}
+#endif
+/* -----------------------------------------------------------------------------
+ * Type initialization:
+ * This problem is tough by the requirement that no dynamic
+ * memory is used. Also, since swig_type_info structures store pointers to
+ * swig_cast_info structures and swig_cast_info structures store pointers back
+ * to swig_type_info structures, we need some lookup code at initialization.
+ * The idea is that swig generates all the structures that are needed.
+ * The runtime then collects these partially filled structures.
+ * The SWIG_InitializeModule function takes these initial arrays out of
+ * swig_module, and does all the lookup, filling in the swig_module.types
+ * array with the correct data and linking the correct swig_cast_info
+ * structures together.
+ *
+ * The generated swig_type_info structures are assigned statically to an initial
+ * array. We just loop through that array, and handle each type individually.
+ * First we lookup if this type has been already loaded, and if so, use the
+ * loaded structure instead of the generated one. Then we have to fill in the
+ * cast linked list. The cast data is initially stored in something like a
+ * two-dimensional array. Each row corresponds to a type (there are the same
+ * number of rows as there are in the swig_type_initial array). Each entry in
+ * a column is one of the swig_cast_info structures for that type.
+ * The cast_initial array is actually an array of arrays, because each row has
+ * a variable number of columns. So to actually build the cast linked list,
+ * we find the array of casts associated with the type, and loop through it
+ * adding the casts to the list. The one last trick we need to do is making
+ * sure the type pointer in the swig_cast_info struct is correct.
+ *
+ * First off, we lookup the cast->type name to see if it is already loaded.
+ * There are three cases to handle:
+ *  1) If the cast->type has already been loaded AND the type we are adding
+ *     casting info to has not been loaded (it is in this module), THEN we
+ *     replace the cast->type pointer with the type pointer that has already
+ *     been loaded.
+ *  2) If BOTH types (the one we are adding casting info to, and the
+ *     cast->type) are loaded, THEN the cast info has already been loaded by
+ *     the previous module so we just ignore it.
+ *  3) Finally, if cast->type has not already been loaded, then we add that
+ *     swig_cast_info to the linked list (because the cast->type) pointer will
+ *     be correct.
+ * ----------------------------------------------------------------------------- */
+
+#ifdef __cplusplus
+extern "C" {
+#if 0
+} /* c-mode */
+#endif
+#endif
+
+#if 0
+#define SWIGRUNTIME_DEBUG
+#endif
+
+
+SWIGRUNTIME void
+SWIG_InitializeModule(void *clientdata) {
+  size_t i;
+  swig_module_info *module_head, *iter;
+  int init;
+  
+  /* check to see if the circular list has been setup, if not, set it up */
+  if (swig_module.next==0) {
+    /* Initialize the swig_module */
+    swig_module.type_initial = swig_type_initial;
+    swig_module.cast_initial = swig_cast_initial;
+    swig_module.next = &swig_module;
+    init = 1;
+  } else {
+    init = 0;
+  }
+  
+  /* Try and load any already created modules */
+  module_head = SWIG_GetModule(clientdata);
+  if (!module_head) {
+    /* This is the first module loaded for this interpreter */
+    /* so set the swig module into the interpreter */
+    SWIG_SetModule(clientdata, &swig_module);
+  } else {
+    /* the interpreter has loaded a SWIG module, but has it loaded this one? */
+    iter=module_head;
+    do {
+      if (iter==&swig_module) {
+        /* Our module is already in the list, so there's nothing more to do. */
+        return;
+      }
+      iter=iter->next;
+    } while (iter!= module_head);
+    
+    /* otherwise we must add our module into the list */
+    swig_module.next = module_head->next;
+    module_head->next = &swig_module;
+  }
+  
+  /* When multiple interpreters are used, a module could have already been initialized in
+       a different interpreter, but not yet have a pointer in this interpreter.
+       In this case, we do not want to continue adding types... everything should be
+       set up already */
+  if (init == 0) return;
+  
+  /* Now work on filling in swig_module.types */
+#ifdef SWIGRUNTIME_DEBUG
+  printf("SWIG_InitializeModule: size %lu\n", (unsigned long)swig_module.size);
+#endif
+  for (i = 0; i < swig_module.size; ++i) {
+    swig_type_info *type = 0;
+    swig_type_info *ret;
+    swig_cast_info *cast;
+    
+#ifdef SWIGRUNTIME_DEBUG
+    printf("SWIG_InitializeModule: type %lu %s\n", (unsigned long)i, swig_module.type_initial[i]->name);
+#endif
+    
+    /* if there is another module already loaded */
+    if (swig_module.next != &swig_module) {
+      type = SWIG_MangledTypeQueryModule(swig_module.next, &swig_module, swig_module.type_initial[i]->name);
+    }
+    if (type) {
+      /* Overwrite clientdata field */
+#ifdef SWIGRUNTIME_DEBUG
+      printf("SWIG_InitializeModule: found type %s\n", type->name);
+#endif
+      if (swig_module.type_initial[i]->clientdata) {
+        type->clientdata = swig_module.type_initial[i]->clientdata;
+#ifdef SWIGRUNTIME_DEBUG
+        printf("SWIG_InitializeModule: found and overwrite type %s \n", type->name);
+#endif
+      }
+    } else {
+      type = swig_module.type_initial[i];
+    }
+    
+    /* Insert casting types */
+    cast = swig_module.cast_initial[i];
+    while (cast->type) {
+      /* Don't need to add information already in the list */
+      ret = 0;
+#ifdef SWIGRUNTIME_DEBUG
+      printf("SWIG_InitializeModule: look cast %s\n", cast->type->name);
+#endif
+      if (swig_module.next != &swig_module) {
+        ret = SWIG_MangledTypeQueryModule(swig_module.next, &swig_module, cast->type->name);
+#ifdef SWIGRUNTIME_DEBUG
+        if (ret) printf("SWIG_InitializeModule: found cast %s\n", ret->name);
+#endif
+      }
+      if (ret) {
+        if (type == swig_module.type_initial[i]) {
+#ifdef SWIGRUNTIME_DEBUG
+          printf("SWIG_InitializeModule: skip old type %s\n", ret->name);
+#endif
+          cast->type = ret;
+          ret = 0;
+        } else {
+          /* Check for casting already in the list */
+          swig_cast_info *ocast = SWIG_TypeCheck(ret->name, type);
+#ifdef SWIGRUNTIME_DEBUG
+          if (ocast) printf("SWIG_InitializeModule: skip old cast %s\n", ret->name);
+#endif
+          if (!ocast) ret = 0;
+        }
+      }
+      
+      if (!ret) {
+#ifdef SWIGRUNTIME_DEBUG
+        printf("SWIG_InitializeModule: adding cast %s\n", cast->type->name);
+#endif
+        if (type->cast) {
+          type->cast->prev = cast;
+          cast->next = type->cast;
+        }
+        type->cast = cast;
+      }
+      cast++;
+    }
+    /* Set entry in modules->types array equal to the type */
+    swig_module.types[i] = type;
+  }
+  swig_module.types[i] = 0;
+  
+#ifdef SWIGRUNTIME_DEBUG
+  printf("**** SWIG_InitializeModule: Cast List ******\n");
+  for (i = 0; i < swig_module.size; ++i) {
+    int j = 0;
+    swig_cast_info *cast = swig_module.cast_initial[i];
+    printf("SWIG_InitializeModule: type %lu %s\n", (unsigned long)i, swig_module.type_initial[i]->name);
+    while (cast->type) {
+      printf("SWIG_InitializeModule: cast type %s\n", cast->type->name);
+      cast++;
+      ++j;
+    }
+    printf("---- Total casts: %d\n",j);
+  }
+  printf("**** SWIG_InitializeModule: Cast List ******\n");
+#endif
+}
+
+/* This function will propagate the clientdata field of type to
+* any new swig_type_info structures that have been added into the list
+* of equivalent types.  It is like calling
+* SWIG_TypeClientData(type, clientdata) a second time.
+*/
+SWIGRUNTIME void
+SWIG_PropagateClientData(void) {
+  size_t i;
+  swig_cast_info *equiv;
+  static int init_run = 0;
+  
+  if (init_run) return;
+  init_run = 1;
+  
+  for (i = 0; i < swig_module.size; i++) {
+    if (swig_module.types[i]->clientdata) {
+      equiv = swig_module.types[i]->cast;
+      while (equiv) {
+        if (!equiv->converter) {
+          if (equiv->type && !equiv->type->clientdata)
+          SWIG_TypeClientData(equiv->type, swig_module.types[i]->clientdata);
+        }
+        equiv = equiv->next;
+      }
+    }
+  }
+}
+
+#ifdef __cplusplus
+#if 0
+{
+  /* c-mode */
+#endif
+}
+#endif
+
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  
+  /* Python-specific SWIG API */
+#define SWIG_newvarlink()                             SWIG_Python_newvarlink()
+#define SWIG_addvarlink(p, name, get_attr, set_attr)  SWIG_Python_addvarlink(p, name, get_attr, set_attr)
+#define SWIG_InstallConstants(d, constants)           SWIG_Python_InstallConstants(d, constants)
+  
+  /* -----------------------------------------------------------------------------
+   * global variable support code.
+   * ----------------------------------------------------------------------------- */
+  
+  typedef struct swig_globalvar {
+    char       *name;                  /* Name of global variable */
+    PyObject *(*get_attr)(void);       /* Return the current value */
+    int       (*set_attr)(PyObject *); /* Set the value */
+    struct swig_globalvar *next;
+  } swig_globalvar;
+  
+  typedef struct swig_varlinkobject {
+    PyObject_HEAD
+    swig_globalvar *vars;
+  } swig_varlinkobject;
+  
+  SWIGINTERN PyObject *
+  swig_varlink_repr(swig_varlinkobject *SWIGUNUSEDPARM(v)) {
+#if PY_VERSION_HEX >= 0x03000000
+    return PyUnicode_InternFromString("<Swig global variables>");
+#else
+    return PyString_FromString("<Swig global variables>");
+#endif
+  }
+  
+  SWIGINTERN PyObject *
+  swig_varlink_str(swig_varlinkobject *v) {
+#if PY_VERSION_HEX >= 0x03000000
+    PyObject *str = PyUnicode_InternFromString("(");
+    PyObject *tail;
+    PyObject *joined;
+    swig_globalvar *var;
+    for (var = v->vars; var; var=var->next) {
+      tail = PyUnicode_FromString(var->name);
+      joined = PyUnicode_Concat(str, tail);
+      Py_DecRef(str);
+      Py_DecRef(tail);
+      str = joined;
+      if (var->next) {
+        tail = PyUnicode_InternFromString(", ");
+        joined = PyUnicode_Concat(str, tail);
+        Py_DecRef(str);
+        Py_DecRef(tail);
+        str = joined;
+      }
+    }
+    tail = PyUnicode_InternFromString(")");
+    joined = PyUnicode_Concat(str, tail);
+    Py_DecRef(str);
+    Py_DecRef(tail);
+    str = joined;
+#else
+    PyObject *str = PyString_FromString("(");
+    swig_globalvar *var;
+    for (var = v->vars; var; var=var->next) {
+      PyString_ConcatAndDel(&str,PyString_FromString(var->name));
+      if (var->next) PyString_ConcatAndDel(&str,PyString_FromString(", "));
+    }
+    PyString_ConcatAndDel(&str,PyString_FromString(")"));
+#endif
+    return str;
+  }
+  
+  SWIGINTERN void
+  swig_varlink_dealloc(swig_varlinkobject *v) {
+    swig_globalvar *var = v->vars;
+    while (var) {
+      swig_globalvar *n = var->next;
+      free(var->name);
+      free(var);
+      var = n;
+    }
+  }
+  
+  SWIGINTERN PyObject *
+  swig_varlink_getattr(swig_varlinkobject *v, char *n) {
+    PyObject *res = NULL;
+    swig_globalvar *var = v->vars;
+    while (var) {
+      if (strcmp(var->name,n) == 0) {
+        res = (*var->get_attr)();
+        break;
+      }
+      var = var->next;
+    }
+    if (res == NULL && !PyErr_Occurred()) {
+      PyErr_Format(PyExc_AttributeError, "Unknown C global variable '%s'", n);
+    }
+    return res;
+  }
+  
+  SWIGINTERN int
+  swig_varlink_setattr(swig_varlinkobject *v, char *n, PyObject *p) {
+    int res = 1;
+    swig_globalvar *var = v->vars;
+    while (var) {
+      if (strcmp(var->name,n) == 0) {
+        res = (*var->set_attr)(p);
+        break;
+      }
+      var = var->next;
+    }
+    if (res == 1 && !PyErr_Occurred()) {
+      PyErr_Format(PyExc_AttributeError, "Unknown C global variable '%s'", n);
+    }
+    return res;
+  }
+  
+  SWIGINTERN PyTypeObject*
+  swig_varlink_type(void) {
+    static char varlink__doc__[] = "Swig var link object";
+    static PyTypeObject varlink_type;
+    static int type_init = 0;
+    if (!type_init) {
+      const PyTypeObject tmp = {
+#if PY_VERSION_HEX >= 0x03000000
+        PyVarObject_HEAD_INIT(NULL, 0)
+#else
+        PyObject_HEAD_INIT(NULL)
+        0,                                  /* ob_size */
+#endif
+        "swigvarlink",                      /* tp_name */
+        sizeof(swig_varlinkobject),         /* tp_basicsize */
+        0,                                  /* tp_itemsize */
+        (destructor) swig_varlink_dealloc,  /* tp_dealloc */
+        0,                                  /* tp_print */
+        (getattrfunc) swig_varlink_getattr, /* tp_getattr */
+        (setattrfunc) swig_varlink_setattr, /* tp_setattr */
+        0,                                  /* tp_compare */
+        (reprfunc) swig_varlink_repr,       /* tp_repr */
+        0,                                  /* tp_as_number */
+        0,                                  /* tp_as_sequence */
+        0,                                  /* tp_as_mapping */
+        0,                                  /* tp_hash */
+        0,                                  /* tp_call */
+        (reprfunc) swig_varlink_str,        /* tp_str */
+        0,                                  /* tp_getattro */
+        0,                                  /* tp_setattro */
+        0,                                  /* tp_as_buffer */
+        0,                                  /* tp_flags */
+        varlink__doc__,                     /* tp_doc */
+        0,                                  /* tp_traverse */
+        0,                                  /* tp_clear */
+        0,                                  /* tp_richcompare */
+        0,                                  /* tp_weaklistoffset */
+        0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* tp_iter -> tp_weaklist */
+        0,                                  /* tp_del */
+        0,                                  /* tp_version_tag */
+#if PY_VERSION_HEX >= 0x03040000
+        0,                                  /* tp_finalize */
+#endif
+#if PY_VERSION_HEX >= 0x03080000
+        0,                                  /* tp_vectorcall */
+#endif
+#if (PY_VERSION_HEX >= 0x03080000) && (PY_VERSION_HEX < 0x03090000)
+        0,                                  /* tp_print */
+#endif
+#ifdef COUNT_ALLOCS
+        0,                                  /* tp_allocs */
+        0,                                  /* tp_frees */
+        0,                                  /* tp_maxalloc */
+        0,                                  /* tp_prev */
+        0                                   /* tp_next */
+#endif
+      };
+      varlink_type = tmp;
+      type_init = 1;
+      if (PyType_Ready(&varlink_type) < 0)
+      return NULL;
+    }
+    return &varlink_type;
+  }
+  
+  /* Create a variable linking object for use later */
+  SWIGINTERN PyObject *
+  SWIG_Python_newvarlink(void) {
+    swig_varlinkobject *result = PyObject_NEW(swig_varlinkobject, swig_varlink_type());
+    if (result) {
+      result->vars = 0;
+    }
+    return ((PyObject*) result);
+  }
+  
+  SWIGINTERN void 
+  SWIG_Python_addvarlink(PyObject *p, const char *name, PyObject *(*get_attr)(void), int (*set_attr)(PyObject *p)) {
+    swig_varlinkobject *v = (swig_varlinkobject *) p;
+    swig_globalvar *gv = (swig_globalvar *) malloc(sizeof(swig_globalvar));
+    if (gv) {
+      size_t size = strlen(name)+1;
+      gv->name = (char *)malloc(size);
+      if (gv->name) {
+        memcpy(gv->name, name, size);
+        gv->get_attr = get_attr;
+        gv->set_attr = set_attr;
+        gv->next = v->vars;
+      }
+    }
+    v->vars = gv;
+  }
+  
+  SWIGINTERN PyObject *
+  SWIG_globals(void) {
+    static PyObject *globals = 0;
+    if (!globals) {
+      globals = SWIG_newvarlink();
+    }
+    return globals;
+  }
+  
+  /* -----------------------------------------------------------------------------
+   * constants/methods manipulation
+   * ----------------------------------------------------------------------------- */
+  
+  /* Install Constants */
+  SWIGINTERN void
+  SWIG_Python_InstallConstants(PyObject *d, swig_const_info constants[]) {
+    PyObject *obj = 0;
+    size_t i;
+    for (i = 0; constants[i].type; ++i) {
+      switch(constants[i].type) {
+      case SWIG_PY_POINTER:
+        obj = SWIG_InternalNewPointerObj(constants[i].pvalue, *(constants[i]).ptype,0);
+        break;
+      case SWIG_PY_BINARY:
+        obj = SWIG_NewPackedObj(constants[i].pvalue, constants[i].lvalue, *(constants[i].ptype));
+        break;
+      default:
+        obj = 0;
+        break;
+      }
+      if (obj) {
+        PyDict_SetItemString(d, constants[i].name, obj);
+        Py_DECREF(obj);
+      }
+    }
+  }
+  
+  /* -----------------------------------------------------------------------------*/
+  /* Fix SwigMethods to carry the callback ptrs when needed */
+  /* -----------------------------------------------------------------------------*/
+  
+  SWIGINTERN void
+  SWIG_Python_FixMethods(PyMethodDef *methods,
+    swig_const_info *const_table,
+    swig_type_info **types,
+    swig_type_info **types_initial) {
+    size_t i;
+    for (i = 0; methods[i].ml_name; ++i) {
+      const char *c = methods[i].ml_doc;
+      if (!c) continue;
+      c = strstr(c, "swig_ptr: ");
+      if (c) {
+        int j;
+        swig_const_info *ci = 0;
+        const char *name = c + 10;
+        for (j = 0; const_table[j].type; ++j) {
+          if (strncmp(const_table[j].name, name, 
+              strlen(const_table[j].name)) == 0) {
+            ci = &(const_table[j]);
+            break;
+          }
+        }
+        if (ci) {
+          void *ptr = (ci->type == SWIG_PY_POINTER) ? ci->pvalue : 0;
+          if (ptr) {
+            size_t shift = (ci->ptype) - types;
+            swig_type_info *ty = types_initial[shift];
+            size_t ldoc = (c - methods[i].ml_doc);
+            size_t lptr = strlen(ty->name)+2*sizeof(void*)+2;
+            char *ndoc = (char*)malloc(ldoc + lptr + 10);
+            if (ndoc) {
+              char *buff = ndoc;
+              memcpy(buff, methods[i].ml_doc, ldoc);
+              buff += ldoc;
+              memcpy(buff, "swig_ptr: ", 10);
+              buff += 10;
+              SWIG_PackVoidPtr(buff, ptr, ty->name, lptr);
+              methods[i].ml_doc = ndoc;
+            }
+          }
+        }
+      }
+    }
+  } 
+  
+  /* -----------------------------------------------------------------------------
+   * Method creation and docstring support functions
+   * ----------------------------------------------------------------------------- */
+  
+  /* -----------------------------------------------------------------------------
+   * Function to find the method definition with the correct docstring for the
+   * proxy module as opposed to the low-level API
+   * ----------------------------------------------------------------------------- */
+  
+  SWIGINTERN PyMethodDef *SWIG_PythonGetProxyDoc(const char *name) {
+    /* Find the function in the modified method table */
+    size_t offset = 0;
+    int found = 0;
+    while (SwigMethods_proxydocs[offset].ml_meth != NULL) {
+      if (strcmp(SwigMethods_proxydocs[offset].ml_name, name) == 0) {
+        found = 1;
+        break;
+      }
+      offset++;
+    }
+    /* Use the copy with the modified docstring if available */
+    return found ? &SwigMethods_proxydocs[offset] : NULL;
+  }
+  
+  /* -----------------------------------------------------------------------------
+   * Wrapper of PyInstanceMethod_New() used in Python 3
+   * It is exported to the generated module, used for -fastproxy
+   * ----------------------------------------------------------------------------- */
+  
+  SWIGINTERN PyObject *SWIG_PyInstanceMethod_New(PyObject *SWIGUNUSEDPARM(self), PyObject *func) {
+    if (PyCFunction_Check(func)) {
+      PyCFunctionObject *funcobj = (PyCFunctionObject *)func;
+      PyMethodDef *ml = SWIG_PythonGetProxyDoc(funcobj->m_ml->ml_name);
+      if (ml)
+      func = PyCFunction_NewEx(ml, funcobj->m_self, funcobj->m_module);
+    }
+#if PY_VERSION_HEX >= 0x03000000
+    return PyInstanceMethod_New(func);
+#else
+    return PyMethod_New(func, NULL, NULL);
+#endif
+  }
+  
+  /* -----------------------------------------------------------------------------
+   * Wrapper of PyStaticMethod_New()
+   * It is exported to the generated module, used for -fastproxy
+   * ----------------------------------------------------------------------------- */
+  
+  SWIGINTERN PyObject *SWIG_PyStaticMethod_New(PyObject *SWIGUNUSEDPARM(self), PyObject *func) {
+    if (PyCFunction_Check(func)) {
+      PyCFunctionObject *funcobj = (PyCFunctionObject *)func;
+      PyMethodDef *ml = SWIG_PythonGetProxyDoc(funcobj->m_ml->ml_name);
+      if (ml)
+      func = PyCFunction_NewEx(ml, funcobj->m_self, funcobj->m_module);
+    }
+    return PyStaticMethod_New(func);
+  }
+  
+#ifdef __cplusplus
+}
+#endif
+
+/* -----------------------------------------------------------------------------*
+ *  Partial Init method
+ * -----------------------------------------------------------------------------*/
+
+#ifdef __cplusplus
+extern "C"
+#endif
+
+SWIGEXPORT 
+#if PY_VERSION_HEX >= 0x03000000
+PyObject*
+#else
+void
+#endif
+SWIG_init(void) {
+  PyObject *m, *d, *md, *globals;
+  
+#if PY_VERSION_HEX >= 0x03000000
+  static struct PyModuleDef SWIG_module = {
+    PyModuleDef_HEAD_INIT,
+    SWIG_name,
+    NULL,
+    -1,
+    SwigMethods,
+    NULL,
+    NULL,
+    NULL,
+    NULL
+  };
+#endif
+  
+#if defined(SWIGPYTHON_BUILTIN)
+  static SwigPyClientData SwigPyObject_clientdata = {
+    0, 0, 0, 0, 0, 0, 0
+  };
+  static PyGetSetDef this_getset_def = {
+    (char *)"this", &SwigPyBuiltin_ThisClosure, NULL, NULL, NULL
+  };
+  static SwigPyGetSet thisown_getset_closure = {
+    SwigPyObject_own,
+    SwigPyObject_own
+  };
+  static PyGetSetDef thisown_getset_def = {
+    (char *)"thisown", SwigPyBuiltin_GetterClosure, SwigPyBuiltin_SetterClosure, NULL, &thisown_getset_closure
+  };
+  PyTypeObject *builtin_pytype;
+  int builtin_base_count;
+  swig_type_info *builtin_basetype;
+  PyObject *tuple;
+  PyGetSetDescrObject *static_getset;
+  PyTypeObject *metatype;
+  PyTypeObject *swigpyobject;
+  SwigPyClientData *cd;
+  PyObject *public_interface, *public_symbol;
+  PyObject *this_descr;
+  PyObject *thisown_descr;
+  PyObject *self = 0;
+  int i;
+  
+  (void)builtin_pytype;
+  (void)builtin_base_count;
+  (void)builtin_basetype;
+  (void)tuple;
+  (void)static_getset;
+  (void)self;
+  
+  /* Metaclass is used to implement static member variables */
+  metatype = SwigPyObjectType();
+  assert(metatype);
+#endif
+  
+  (void)globals;
+  
+  /* Create singletons now to avoid potential deadlocks with multi-threaded usage after module initialization */
+  SWIG_This();
+  SWIG_Python_TypeCache();
+  SwigPyPacked_type();
+#ifndef SWIGPYTHON_BUILTIN
+  SwigPyObject_type();
+#endif
+  
+  /* Fix SwigMethods to carry the callback ptrs when needed */
+  SWIG_Python_FixMethods(SwigMethods, swig_const_table, swig_types, swig_type_initial);
+  
+#if PY_VERSION_HEX >= 0x03000000
+  m = PyModule_Create(&SWIG_module);
+#else
+  m = Py_InitModule(SWIG_name, SwigMethods);
+#endif
+  
+  md = d = PyModule_GetDict(m);
+  (void)md;
+  
+  SWIG_InitializeModule(0);
+  
+#ifdef SWIGPYTHON_BUILTIN
+  swigpyobject = SwigPyObject_TypeOnce();
+  
+  SwigPyObject_stype = SWIG_MangledTypeQuery("_p_SwigPyObject");
+  assert(SwigPyObject_stype);
+  cd = (SwigPyClientData*) SwigPyObject_stype->clientdata;
+  if (!cd) {
+    SwigPyObject_stype->clientdata = &SwigPyObject_clientdata;
+    SwigPyObject_clientdata.pytype = swigpyobject;
+  } else if (swigpyobject->tp_basicsize != cd->pytype->tp_basicsize) {
+    PyErr_SetString(PyExc_RuntimeError, "Import error: attempted to load two incompatible swig-generated modules.");
+# if PY_VERSION_HEX >= 0x03000000
+    return NULL;
+# else
+    return;
+# endif
+  }
+  
+  /* All objects have a 'this' attribute */
+  this_descr = PyDescr_NewGetSet(SwigPyObject_type(), &this_getset_def);
+  (void)this_descr;
+  
+  /* All objects have a 'thisown' attribute */
+  thisown_descr = PyDescr_NewGetSet(SwigPyObject_type(), &thisown_getset_def);
+  (void)thisown_descr;
+  
+  public_interface = PyList_New(0);
+  public_symbol = 0;
+  (void)public_symbol;
+  
+  PyDict_SetItemString(md, "__all__", public_interface);
+  Py_DECREF(public_interface);
+  for (i = 0; SwigMethods[i].ml_name != NULL; ++i)
+  SwigPyBuiltin_AddPublicSymbol(public_interface, SwigMethods[i].ml_name);
+  for (i = 0; swig_const_table[i].name != 0; ++i)
+  SwigPyBuiltin_AddPublicSymbol(public_interface, swig_const_table[i].name);
+#endif
+  
+  SWIG_InstallConstants(d,swig_const_table);
+  
+  SWIG_Python_SetConstant(d, "SHARED_PTR_DISOWN",SWIG_From_int(static_cast< int >(0)));
+  globals = SWIG_globals();
+  if (!globals) {
+    PyErr_SetString(PyExc_TypeError, "Failure to create SWIG globals.");
+#if PY_VERSION_HEX >= 0x03000000
+    return NULL;
+#else
+    return;
+#endif
+  }
+  PyDict_SetItemString(md, "cvar", globals);
+  Py_DECREF(globals);
+  SWIG_addvarlink(globals, "partition_stats", Swig_var_partition_stats_get, Swig_var_partition_stats_set);
+  SWIG_addvarlink(globals, "hamming_batch_size", Swig_var_hamming_batch_size_get, Swig_var_hamming_batch_size_set);
+  SWIG_Python_SetConstant(d, "Other",SWIG_From_int(static_cast< int >(faiss::gpu::Other)));
+  SWIG_Python_SetConstant(d, "FlatData",SWIG_From_int(static_cast< int >(faiss::gpu::FlatData)));
+  SWIG_Python_SetConstant(d, "IVFLists",SWIG_From_int(static_cast< int >(faiss::gpu::IVFLists)));
+  SWIG_Python_SetConstant(d, "Quantizer",SWIG_From_int(static_cast< int >(faiss::gpu::Quantizer)));
+  SWIG_Python_SetConstant(d, "QuantizerPrecomputedCodes",SWIG_From_int(static_cast< int >(faiss::gpu::QuantizerPrecomputedCodes)));
+  SWIG_Python_SetConstant(d, "TemporaryMemoryBuffer",SWIG_From_int(static_cast< int >(faiss::gpu::TemporaryMemoryBuffer)));
+  SWIG_Python_SetConstant(d, "TemporaryMemoryOverflow",SWIG_From_int(static_cast< int >(faiss::gpu::TemporaryMemoryOverflow)));
+  SWIG_Python_SetConstant(d, "Temporary",SWIG_From_int(static_cast< int >(faiss::gpu::Temporary)));
+  SWIG_Python_SetConstant(d, "Device",SWIG_From_int(static_cast< int >(faiss::gpu::Device)));
+  SWIG_Python_SetConstant(d, "Unified",SWIG_From_int(static_cast< int >(faiss::gpu::Unified)));
+  SWIG_addvarlink(globals, "distance_compute_blas_threshold", Swig_var_distance_compute_blas_threshold_get, Swig_var_distance_compute_blas_threshold_set);
+  SWIG_addvarlink(globals, "distance_compute_blas_query_bs", Swig_var_distance_compute_blas_query_bs_get, Swig_var_distance_compute_blas_query_bs_set);
+  SWIG_addvarlink(globals, "distance_compute_blas_database_bs", Swig_var_distance_compute_blas_database_bs_get, Swig_var_distance_compute_blas_database_bs_set);
+  SWIG_addvarlink(globals, "distance_compute_min_k_reservoir", Swig_var_distance_compute_min_k_reservoir_get, Swig_var_distance_compute_min_k_reservoir_set);
+  SWIG_Python_SetConstant(d, "METRIC_INNER_PRODUCT",SWIG_From_int(static_cast< int >(faiss::METRIC_INNER_PRODUCT)));
+  SWIG_Python_SetConstant(d, "METRIC_L2",SWIG_From_int(static_cast< int >(faiss::METRIC_L2)));
+  SWIG_Python_SetConstant(d, "METRIC_L1",SWIG_From_int(static_cast< int >(faiss::METRIC_L1)));
+  SWIG_Python_SetConstant(d, "METRIC_Linf",SWIG_From_int(static_cast< int >(faiss::METRIC_Linf)));
+  SWIG_Python_SetConstant(d, "METRIC_Lp",SWIG_From_int(static_cast< int >(faiss::METRIC_Lp)));
+  SWIG_Python_SetConstant(d, "METRIC_Canberra",SWIG_From_int(static_cast< int >(faiss::METRIC_Canberra)));
+  SWIG_Python_SetConstant(d, "METRIC_BrayCurtis",SWIG_From_int(static_cast< int >(faiss::METRIC_BrayCurtis)));
+  SWIG_Python_SetConstant(d, "METRIC_JensenShannon",SWIG_From_int(static_cast< int >(faiss::METRIC_JensenShannon)));
+  SWIG_Python_SetConstant(d, "FAISS_VERSION_MAJOR",SWIG_From_int(static_cast< int >(1)));
+  SWIG_Python_SetConstant(d, "FAISS_VERSION_MINOR",SWIG_From_int(static_cast< int >(7)));
+  SWIG_Python_SetConstant(d, "FAISS_VERSION_PATCH",SWIG_From_int(static_cast< int >(2)));
+  SWIG_Python_SetConstant(d, "ProductQuantizer_Train_default",SWIG_From_int(static_cast< int >(faiss::ProductQuantizer::Train_default)));
+  SWIG_Python_SetConstant(d, "ProductQuantizer_Train_hot_start",SWIG_From_int(static_cast< int >(faiss::ProductQuantizer::Train_hot_start)));
+  SWIG_Python_SetConstant(d, "ProductQuantizer_Train_shared",SWIG_From_int(static_cast< int >(faiss::ProductQuantizer::Train_shared)));
+  SWIG_Python_SetConstant(d, "ProductQuantizer_Train_hypercube",SWIG_From_int(static_cast< int >(faiss::ProductQuantizer::Train_hypercube)));
+  SWIG_Python_SetConstant(d, "ProductQuantizer_Train_hypercube_pca",SWIG_From_int(static_cast< int >(faiss::ProductQuantizer::Train_hypercube_pca)));
+  SWIG_Python_SetConstant(d, "PQDecoder8_nbits",SWIG_From_int(static_cast< int >(faiss::PQDecoder8::nbits)));
+  SWIG_Python_SetConstant(d, "PQDecoder16_nbits",SWIG_From_int(static_cast< int >(faiss::PQDecoder16::nbits)));
+  SWIG_Python_SetConstant(d, "AdditiveQuantizer_ST_decompress",SWIG_From_int(static_cast< int >(faiss::AdditiveQuantizer::ST_decompress)));
+  SWIG_Python_SetConstant(d, "AdditiveQuantizer_ST_LUT_nonorm",SWIG_From_int(static_cast< int >(faiss::AdditiveQuantizer::ST_LUT_nonorm)));
+  SWIG_Python_SetConstant(d, "AdditiveQuantizer_ST_norm_from_LUT",SWIG_From_int(static_cast< int >(faiss::AdditiveQuantizer::ST_norm_from_LUT)));
+  SWIG_Python_SetConstant(d, "AdditiveQuantizer_ST_norm_float",SWIG_From_int(static_cast< int >(faiss::AdditiveQuantizer::ST_norm_float)));
+  SWIG_Python_SetConstant(d, "AdditiveQuantizer_ST_norm_qint8",SWIG_From_int(static_cast< int >(faiss::AdditiveQuantizer::ST_norm_qint8)));
+  SWIG_Python_SetConstant(d, "AdditiveQuantizer_ST_norm_qint4",SWIG_From_int(static_cast< int >(faiss::AdditiveQuantizer::ST_norm_qint4)));
+  SWIG_Python_SetConstant(d, "AdditiveQuantizer_ST_norm_cqint8",SWIG_From_int(static_cast< int >(faiss::AdditiveQuantizer::ST_norm_cqint8)));
+  SWIG_Python_SetConstant(d, "AdditiveQuantizer_ST_norm_cqint4",SWIG_From_int(static_cast< int >(faiss::AdditiveQuantizer::ST_norm_cqint4)));
+  SWIG_Python_SetConstant(d, "ResidualQuantizer_Train_default",SWIG_From_int(static_cast< int >(faiss::ResidualQuantizer::Train_default)));
+  SWIG_Python_SetConstant(d, "ResidualQuantizer_Train_progressive_dim",SWIG_From_int(static_cast< int >(faiss::ResidualQuantizer::Train_progressive_dim)));
+  SWIG_Python_SetConstant(d, "ResidualQuantizer_Train_default_Train_top_beam",SWIG_From_int(static_cast< int >(faiss::ResidualQuantizer::Train_default_Train_top_beam)));
+  SWIG_Python_SetConstant(d, "ResidualQuantizer_Train_progressive_dim_Train_top_beam",SWIG_From_int(static_cast< int >(faiss::ResidualQuantizer::Train_progressive_dim_Train_top_beam)));
+  SWIG_Python_SetConstant(d, "ResidualQuantizer_Train_default_Skip_codebook_tables",SWIG_From_int(static_cast< int >(faiss::ResidualQuantizer::Train_default_Skip_codebook_tables)));
+  SWIG_Python_SetConstant(d, "ResidualQuantizer_Train_progressive_dim_Skip_codebook_tables",SWIG_From_int(static_cast< int >(faiss::ResidualQuantizer::Train_progressive_dim_Skip_codebook_tables)));
+  SWIG_Python_SetConstant(d, "ResidualQuantizer_Train_default_Train_top_beam_Skip_codebook_tables",SWIG_From_int(static_cast< int >(faiss::ResidualQuantizer::Train_default_Train_top_beam_Skip_codebook_tables)));
+  SWIG_Python_SetConstant(d, "ResidualQuantizer_Train_progressive_dim_Train_top_beam_Skip_codebook_tables",SWIG_From_int(static_cast< int >(faiss::ResidualQuantizer::Train_progressive_dim_Train_top_beam_Skip_codebook_tables)));
+  SWIG_Python_SetConstant(d, "ResidualQuantizer_Train_top_beam",SWIG_From_int(static_cast< int >(faiss::ResidualQuantizer::Train_top_beam)));
+  SWIG_Python_SetConstant(d, "ResidualQuantizer_Skip_codebook_tables",SWIG_From_int(static_cast< int >(faiss::ResidualQuantizer::Skip_codebook_tables)));
+  SWIG_Python_SetConstant(d, "PolysemousTraining_OT_None",SWIG_From_int(static_cast< int >(faiss::PolysemousTraining::OT_None)));
+  SWIG_Python_SetConstant(d, "PolysemousTraining_OT_ReproduceDistances_affine",SWIG_From_int(static_cast< int >(faiss::PolysemousTraining::OT_ReproduceDistances_affine)));
+  SWIG_Python_SetConstant(d, "PolysemousTraining_OT_Ranking_weighted_diff",SWIG_From_int(static_cast< int >(faiss::PolysemousTraining::OT_Ranking_weighted_diff)));
+  SWIG_Python_SetConstant(d, "IndexPQ_ST_PQ",SWIG_From_int(static_cast< int >(faiss::IndexPQ::ST_PQ)));
+  SWIG_Python_SetConstant(d, "IndexPQ_ST_HE",SWIG_From_int(static_cast< int >(faiss::IndexPQ::ST_HE)));
+  SWIG_Python_SetConstant(d, "IndexPQ_ST_generalized_HE",SWIG_From_int(static_cast< int >(faiss::IndexPQ::ST_generalized_HE)));
+  SWIG_Python_SetConstant(d, "IndexPQ_ST_SDC",SWIG_From_int(static_cast< int >(faiss::IndexPQ::ST_SDC)));
+  SWIG_Python_SetConstant(d, "IndexPQ_ST_polysemous",SWIG_From_int(static_cast< int >(faiss::IndexPQ::ST_polysemous)));
+  SWIG_Python_SetConstant(d, "IndexPQ_ST_polysemous_generalize",SWIG_From_int(static_cast< int >(faiss::IndexPQ::ST_polysemous_generalize)));
+  SWIG_addvarlink(globals, "indexPQ_stats", Swig_var_indexPQ_stats_get, Swig_var_indexPQ_stats_set);
+  SWIG_Python_SetConstant(d, "InvertedLists_INVALID_CODE_SIZE",SWIG_From_unsigned_SS_long(static_cast< unsigned long >(faiss::InvertedLists::INVALID_CODE_SIZE)));
+  SWIG_Python_SetConstant(d, "DirectMap_NoMap",SWIG_From_int(static_cast< int >(faiss::DirectMap::NoMap)));
+  SWIG_Python_SetConstant(d, "DirectMap_Array",SWIG_From_int(static_cast< int >(faiss::DirectMap::Array)));
+  SWIG_Python_SetConstant(d, "DirectMap_Hashtable",SWIG_From_int(static_cast< int >(faiss::DirectMap::Hashtable)));
+  SWIG_addvarlink(globals, "indexIVF_stats", Swig_var_indexIVF_stats_get, Swig_var_indexIVF_stats_set);
+  SWIG_Python_SetConstant(d, "ScalarQuantizer_QT_8bit",SWIG_From_int(static_cast< int >(faiss::ScalarQuantizer::QT_8bit)));
+  SWIG_Python_SetConstant(d, "ScalarQuantizer_QT_4bit",SWIG_From_int(static_cast< int >(faiss::ScalarQuantizer::QT_4bit)));
+  SWIG_Python_SetConstant(d, "ScalarQuantizer_QT_8bit_uniform",SWIG_From_int(static_cast< int >(faiss::ScalarQuantizer::QT_8bit_uniform)));
+  SWIG_Python_SetConstant(d, "ScalarQuantizer_QT_4bit_uniform",SWIG_From_int(static_cast< int >(faiss::ScalarQuantizer::QT_4bit_uniform)));
+  SWIG_Python_SetConstant(d, "ScalarQuantizer_QT_fp16",SWIG_From_int(static_cast< int >(faiss::ScalarQuantizer::QT_fp16)));
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+  SWIG_Python_SetConstant(d, "ScalarQuantizer_QT_6bit",SWIG_From_int(static_cast< int >(faiss::ScalarQuantizer::QT_6bit)));
+  SWIG_Python_SetConstant(d, "ScalarQuantizer_RS_minmax",SWIG_From_int(static_cast< int >(faiss::ScalarQuantizer::RS_minmax)));
+  SWIG_Python_SetConstant(d, "ScalarQuantizer_RS_meanstd",SWIG_From_int(static_cast< int >(faiss::ScalarQuantizer::RS_meanstd)));
+  SWIG_Python_SetConstant(d, "ScalarQuantizer_RS_quantiles",SWIG_From_int(static_cast< int >(faiss::ScalarQuantizer::RS_quantiles)));
+  SWIG_Python_SetConstant(d, "ScalarQuantizer_RS_optim",SWIG_From_int(static_cast< int >(faiss::ScalarQuantizer::RS_optim)));
+  SWIG_Python_SetConstant(d, "IndexIVFSpectralHash_Thresh_global",SWIG_From_int(static_cast< int >(faiss::IndexIVFSpectralHash::Thresh_global)));
+  SWIG_Python_SetConstant(d, "IndexIVFSpectralHash_Thresh_centroid",SWIG_From_int(static_cast< int >(faiss::IndexIVFSpectralHash::Thresh_centroid)));
+  SWIG_Python_SetConstant(d, "IndexIVFSpectralHash_Thresh_centroid_half",SWIG_From_int(static_cast< int >(faiss::IndexIVFSpectralHash::Thresh_centroid_half)));
+  SWIG_Python_SetConstant(d, "IndexIVFSpectralHash_Thresh_median",SWIG_From_int(static_cast< int >(faiss::IndexIVFSpectralHash::Thresh_median)));
+  SWIG_addvarlink(globals, "hnsw_stats", Swig_var_hnsw_stats_get, Swig_var_hnsw_stats_set);
+  SWIG_addvarlink(globals, "precomputed_table_max_bytes", Swig_var_precomputed_table_max_bytes_get, Swig_var_precomputed_table_max_bytes_set);
+  SWIG_addvarlink(globals, "indexIVFPQ_stats", Swig_var_indexIVFPQ_stats_get, Swig_var_indexIVFPQ_stats_set);
+  SWIG_addvarlink(globals, "FastScan_stats", Swig_var_FastScan_stats_get, Swig_var_FastScan_stats_set);
+  SWIG_addvarlink(globals, "IVFFastScan_stats", Swig_var_IVFFastScan_stats_get, Swig_var_IVFFastScan_stats_set);
+  SWIG_addvarlink(globals, "indexBinaryHash_stats", Swig_var_indexBinaryHash_stats_get, Swig_var_indexBinaryHash_stats_set);
+  SWIG_Python_SetConstant(d, "INDICES_CPU",SWIG_From_int(static_cast< int >(faiss::gpu::INDICES_CPU)));
+  SWIG_Python_SetConstant(d, "INDICES_IVF",SWIG_From_int(static_cast< int >(faiss::gpu::INDICES_IVF)));
+  SWIG_Python_SetConstant(d, "INDICES_32_BIT",SWIG_From_int(static_cast< int >(faiss::gpu::INDICES_32_BIT)));
+  SWIG_Python_SetConstant(d, "INDICES_64_BIT",SWIG_From_int(static_cast< int >(faiss::gpu::INDICES_64_BIT)));
+  SWIG_Python_SetConstant(d, "DistanceDataType_F32",SWIG_From_int(static_cast< int >(faiss::gpu::DistanceDataType::F32)));
+  SWIG_Python_SetConstant(d, "DistanceDataType_F16",SWIG_From_int(static_cast< int >(faiss::gpu::DistanceDataType::F16)));
+  SWIG_Python_SetConstant(d, "IndicesDataType_I64",SWIG_From_int(static_cast< int >(faiss::gpu::IndicesDataType::I64)));
+  SWIG_Python_SetConstant(d, "IndicesDataType_I32",SWIG_From_int(static_cast< int >(faiss::gpu::IndicesDataType::I32)));
+  SWIG_addvarlink(globals, "IO_FLAG_READ_ONLY", Swig_var_IO_FLAG_READ_ONLY_get, Swig_var_IO_FLAG_READ_ONLY_set);
+  SWIG_addvarlink(globals, "IO_FLAG_ONDISK_SAME_DIR", Swig_var_IO_FLAG_ONDISK_SAME_DIR_get, Swig_var_IO_FLAG_ONDISK_SAME_DIR_set);
+  SWIG_addvarlink(globals, "IO_FLAG_SKIP_IVF_DATA", Swig_var_IO_FLAG_SKIP_IVF_DATA_get, Swig_var_IO_FLAG_SKIP_IVF_DATA_set);
+  SWIG_addvarlink(globals, "IO_FLAG_MMAP", Swig_var_IO_FLAG_MMAP_get, Swig_var_IO_FLAG_MMAP_set);
+  SWIG_addvarlink(globals, "index_factory_verbose", Swig_var_index_factory_verbose_get, Swig_var_index_factory_verbose_set);
+  
+  /* needed, else crash at runtime */
+  import_array();
+  
+  faiss::InterruptCallback::instance.reset(new PythonInterruptCallback());
+  
+  
+#if PY_VERSION_HEX >= 0x03000000
+  return m;
+#else
+  return;
+#endif
+}
+
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+
+# target to build an object file
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+.PHONY : python_callbacks.cpp.s
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+	@echo "... all (the default if no target is provided)"
+	@echo "... clean"
+	@echo "... depend"
+	@echo "... edit_cache"
+	@echo "... install"
+	@echo "... install/local"
+	@echo "... install/strip"
+	@echo "... list_install_components"
+	@echo "... rebuild_cache"
+	@echo "... test"
+	@echo "... swigfaiss_avx2_swig_compilation"
+	@echo "... swigfaiss_swig_compilation"
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+
+
+
+#=============================================================================
+# Special targets to cleanup operation of make.
+
+# Special rule to run CMake to check the build system integrity.
+# No rule that depends on this can have commands that come from listfiles
+# because they might be regenerated.
+cmake_check_build_system:
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diff --git a/build/faiss/python/__init__.py b/build/faiss/python/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..1da6b5583ffe69f96b187c3ac6b0d42919428632
--- /dev/null
+++ b/build/faiss/python/__init__.py
@@ -0,0 +1,1661 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+#@nolint
+
+# not linting this file because it imports * from swigfaiss, which
+# causes a ton of useless warnings.
+
+import numpy as np
+import sys
+import inspect
+import array
+import warnings
+
+# We import * so that the symbol foo can be accessed as faiss.foo.
+from .loader import *
+
+
+__version__ = "%d.%d.%d" % (FAISS_VERSION_MAJOR,
+                            FAISS_VERSION_MINOR,
+                            FAISS_VERSION_PATCH)
+
+##################################################################
+# The functions below add or replace some methods for classes
+# this is to be able to pass in numpy arrays directly
+# The C++ version of the classnames will be suffixed with _c
+##################################################################
+
+
+def replace_method(the_class, name, replacement, ignore_missing=False):
+    """ Replaces a method in a class with another version. The old method
+    is renamed to method_name_c (because presumably it was implemented in C) """
+    try:
+        orig_method = getattr(the_class, name)
+    except AttributeError:
+        if ignore_missing:
+            return
+        raise
+    if orig_method.__name__ == 'replacement_' + name:
+        # replacement was done in parent class
+        return
+    setattr(the_class, name + '_c', orig_method)
+    setattr(the_class, name, replacement)
+
+def handle_Clustering():
+
+    def replacement_train(self, x, index, weights=None):
+        """Perform clustering on a set of vectors. The index is used for assignment.
+
+        Parameters
+        ----------
+        x : array_like
+            Training vectors, shape (n, self.d). `dtype` must be float32.
+        index : faiss.Index
+            Index used for assignment. The dimension of the index should be `self.d`.
+        weights : array_like, optional
+            Per training sample weight (size n) used when computing the weighted
+            average to obtain the centroid (default is 1 for all training vectors).
+        """
+        n, d = x.shape
+        assert d == self.d
+        if weights is not None:
+            assert weights.shape == (n, )
+            self.train_c(n, swig_ptr(x), index, swig_ptr(weights))
+        else:
+            self.train_c(n, swig_ptr(x), index)
+
+    def replacement_train_encoded(self, x, codec, index, weights=None):
+        """ Perform clustering on a set of compressed vectors. The index is used for assignment.
+        The decompression is performed on-the-fly.
+
+        Parameters
+        ----------
+        x : array_like
+            Training vectors, shape (n, codec.code_size()). `dtype` must be `uint8`.
+        codec : faiss.Index
+            Index used to decode the vectors. Should have dimension `self.d`.
+        index : faiss.Index
+            Index used for assignment. The dimension of the index should be `self.d`.
+        weigths : array_like, optional
+            Per training sample weight (size n) used when computing the weighted
+            average to obtain the centroid (default is 1 for all training vectors).
+        """
+        n, d = x.shape
+        assert d == codec.sa_code_size()
+        assert codec.d == index.d
+        if weights is not None:
+            assert weights.shape == (n, )
+            self.train_encoded_c(n, swig_ptr(x), codec, index, swig_ptr(weights))
+        else:
+            self.train_encoded_c(n, swig_ptr(x), codec, index)
+
+    replace_method(Clustering, 'train', replacement_train)
+    replace_method(Clustering, 'train_encoded', replacement_train_encoded)
+
+
+handle_Clustering()
+
+
+def handle_Clustering1D():
+
+    def replacement_train_exact(self, x):
+        """Perform clustering on a set of 1D vectors.
+
+        Parameters
+        ----------
+        x : array_like
+            Training vectors, shape (n, 1). `dtype` must be float32.
+        """
+        n, d = x.shape
+        assert d == self.d
+        self.train_exact_c(n, swig_ptr(x))
+
+    replace_method(Clustering1D, 'train_exact', replacement_train_exact)
+
+
+handle_Clustering1D()
+
+
+def handle_Quantizer(the_class):
+
+    def replacement_train(self, x):
+        """ Train the quantizer on a set of training vectors.
+
+        Parameters
+        ----------
+        x : array_like
+            Training vectors, shape (n, self.d). `dtype` must be float32.
+        """
+        n, d = x.shape
+        assert d == self.d
+        self.train_c(n, swig_ptr(x))
+
+    def replacement_compute_codes(self, x):
+        """ Compute the codes corresponding to a set of vectors.
+
+        Parameters
+        ----------
+        x : array_like
+            Vectors to encode, shape (n, self.d). `dtype` must be float32.
+
+        Returns
+        -------
+        codes : array_like
+            Corresponding code for each vector, shape (n, self.code_size)
+            and `dtype` uint8.
+        """
+        n, d = x.shape
+        assert d == self.d
+        codes = np.empty((n, self.code_size), dtype='uint8')
+        self.compute_codes_c(swig_ptr(x), swig_ptr(codes), n)
+        return codes
+
+    def replacement_decode(self, codes):
+        """Reconstruct an approximation of vectors given their codes.
+
+        Parameters
+        ----------
+        codes : array_like
+            Codes to decode, shape (n, self.code_size). `dtype` must be uint8.
+
+        Returns
+        -------
+            Reconstructed vectors for each code, shape `(n, d)` and `dtype` float32.
+        """
+        n, cs = codes.shape
+        assert cs == self.code_size
+        x = np.empty((n, self.d), dtype='float32')
+        self.decode_c(swig_ptr(codes), swig_ptr(x), n)
+        return x
+
+    replace_method(the_class, 'train', replacement_train)
+    replace_method(the_class, 'compute_codes', replacement_compute_codes)
+    replace_method(the_class, 'decode', replacement_decode)
+
+
+handle_Quantizer(ProductQuantizer)
+handle_Quantizer(ScalarQuantizer)
+handle_Quantizer(ResidualQuantizer)
+handle_Quantizer(LocalSearchQuantizer)
+
+
+def handle_NSG(the_class):
+
+    def replacement_build(self, x, graph):
+        n, d = x.shape
+        assert d == self.d
+        assert graph.ndim == 2
+        assert graph.shape[0] == n
+        K = graph.shape[1]
+        self.build_c(n, swig_ptr(x), swig_ptr(graph), K)
+
+    replace_method(the_class, 'build', replacement_build)
+
+
+def handle_Index(the_class):
+
+    def replacement_add(self, x):
+        """Adds vectors to the index.
+        The index must be trained before vectors can be added to it.
+        The vectors are implicitly numbered in sequence. When `n` vectors are
+        added to the index, they are given ids `ntotal`, `ntotal + 1`, ..., `ntotal + n - 1`.
+
+        Parameters
+        ----------
+        x : array_like
+            Query vectors, shape (n, d) where d is appropriate for the index.
+            `dtype` must be float32.
+        """
+
+        n, d = x.shape
+        assert d == self.d
+        self.add_c(n, swig_ptr(x))
+
+    def replacement_add_with_ids(self, x, ids):
+        """Adds vectors with arbitrary ids to the index (not all indexes support this).
+        The index must be trained before vectors can be added to it.
+        Vector `i` is stored in `x[i]` and has id `ids[i]`.
+
+        Parameters
+        ----------
+        x : array_like
+            Query vectors, shape (n, d) where d is appropriate for the index.
+            `dtype` must be float32.
+        ids : array_like
+            Array if ids of size n. The ids must be of type `int64`. Note that `-1` is reserved
+            in result lists to mean "not found" so it's better to not use it as an id.
+        """
+        n, d = x.shape
+        assert d == self.d
+
+        assert ids.shape == (n, ), 'not same nb of vectors as ids'
+        self.add_with_ids_c(n, swig_ptr(x), swig_ptr(ids))
+
+    def replacement_assign(self, x, k, labels=None):
+        """Find the k nearest neighbors of the set of vectors x in the index.
+        This is the same as the `search` method, but discards the distances.
+
+        Parameters
+        ----------
+        x : array_like
+            Query vectors, shape (n, d) where d is appropriate for the index.
+            `dtype` must be float32.
+        k : int
+            Number of nearest neighbors.
+        labels : array_like, optional
+            Labels array to store the results.
+
+        Returns
+        -------
+        labels: array_like
+            Labels of the nearest neighbors, shape (n, k).
+            When not enough results are found, the label is set to -1
+        """
+        n, d = x.shape
+        assert d == self.d
+
+        if labels is None:
+            labels = np.empty((n, k), dtype=np.int64)
+        else:
+            assert labels.shape == (n, k)
+
+        self.assign_c(n, swig_ptr(x), swig_ptr(labels), k)
+        return labels
+
+    def replacement_train(self, x):
+        """Trains the index on a representative set of vectors.
+        The index must be trained before vectors can be added to it.
+
+        Parameters
+        ----------
+        x : array_like
+            Query vectors, shape (n, d) where d is appropriate for the index.
+            `dtype` must be float32.
+        """
+        n, d = x.shape
+        assert d == self.d
+        self.train_c(n, swig_ptr(x))
+
+    def replacement_search(self, x, k, D=None, I=None):
+        """Find the k nearest neighbors of the set of vectors x in the index.
+
+        Parameters
+        ----------
+        x : array_like
+            Query vectors, shape (n, d) where d is appropriate for the index.
+            `dtype` must be float32.
+        k : int
+            Number of nearest neighbors.
+        D : array_like, optional
+            Distance array to store the result.
+        I : array_like, optional
+            Labels array to store the results.
+
+        Returns
+        -------
+        D : array_like
+            Distances of the nearest neighbors, shape (n, k). When not enough results are found
+            the label is set to +Inf or -Inf.
+        I : array_like
+            Labels of the nearest neighbors, shape (n, k).
+            When not enough results are found, the label is set to -1
+        """
+
+        n, d = x.shape
+        assert d == self.d
+
+        assert k > 0
+
+        if D is None:
+            D = np.empty((n, k), dtype=np.float32)
+        else:
+            assert D.shape == (n, k)
+
+        if I is None:
+            I = np.empty((n, k), dtype=np.int64)
+        else:
+            assert I.shape == (n, k)
+
+        self.search_c(n, swig_ptr(x), k, swig_ptr(D), swig_ptr(I))
+        return D, I
+
+    def replacement_search_and_reconstruct(self, x, k, D=None, I=None, R=None):
+        """Find the k nearest neighbors of the set of vectors x in the index,
+        and return an approximation of these vectors.
+
+        Parameters
+        ----------
+        x : array_like
+            Query vectors, shape (n, d) where d is appropriate for the index.
+            `dtype` must be float32.
+        k : int
+            Number of nearest neighbors.
+        D : array_like, optional
+            Distance array to store the result.
+        I : array_like, optional
+            Labels array to store the result.
+        R : array_like, optional
+            reconstruction array to store
+
+        Returns
+        -------
+        D : array_like
+            Distances of the nearest neighbors, shape (n, k). When not enough results are found
+            the label is set to +Inf or -Inf.
+        I : array_like
+            Labels of the nearest neighbors, shape (n, k). When not enough results are found,
+            the label is set to -1
+        R : array_like
+            Approximate (reconstructed) nearest neighbor vectors, shape (n, k, d).
+        """
+        n, d = x.shape
+        assert d == self.d
+
+        assert k > 0
+
+        if D is None:
+            D = np.empty((n, k), dtype=np.float32)
+        else:
+            assert D.shape == (n, k)
+
+        if I is None:
+            I = np.empty((n, k), dtype=np.int64)
+        else:
+            assert I.shape == (n, k)
+
+        if R is None:
+            R = np.empty((n, k, d), dtype=np.float32)
+        else:
+            assert R.shape == (n, k, d)
+
+        self.search_and_reconstruct_c(n, swig_ptr(x),
+                                      k, swig_ptr(D),
+                                      swig_ptr(I),
+                                      swig_ptr(R))
+        return D, I, R
+
+    def replacement_remove_ids(self, x):
+        """Remove some ids from the index.
+        This is a O(ntotal) operation by default, so could be expensive.
+
+        Parameters
+        ----------
+        x : array_like or faiss.IDSelector
+            Either an IDSelector that returns True for vectors to remove, or a
+            list of ids to reomove (1D array of int64). When `x` is a list,
+            it is wrapped into an IDSelector.
+
+        Returns
+        -------
+        n_remove: int
+            number of vectors that were removed
+        """
+        if isinstance(x, IDSelector):
+            sel = x
+        else:
+            assert x.ndim == 1
+            index_ivf = try_extract_index_ivf (self)
+            if index_ivf and index_ivf.direct_map.type == DirectMap.Hashtable:
+                sel = IDSelectorArray(x.size, swig_ptr(x))
+            else:
+                sel = IDSelectorBatch(x.size, swig_ptr(x))
+        return self.remove_ids_c(sel)
+
+    def replacement_reconstruct(self, key, x=None):
+        """Approximate reconstruction of one vector from the index.
+
+        Parameters
+        ----------
+        key : int
+            Id of the vector to reconstruct
+        x : array_like, optional
+            pre-allocated array to store the results
+
+        Returns
+        -------
+        x : array_like
+            Reconstructed vector, size `self.d`, `dtype`=float32
+        """
+        if x is None:
+            x = np.empty(self.d, dtype=np.float32)
+        else:
+            assert x.shape == (self.d, )
+
+        self.reconstruct_c(key, swig_ptr(x))
+        return x
+
+    def replacement_reconstruct_n(self, n0, ni, x=None):
+        """Approximate reconstruction of vectors `n0` ... `n0 + ni - 1` from the index.
+        Missing vectors trigger an exception.
+
+        Parameters
+        ----------
+        n0 : int
+            Id of the first vector to reconstruct
+        ni : int
+            Number of vectors to reconstruct
+        x : array_like, optional
+            pre-allocated array to store the results
+
+        Returns
+        -------
+        x : array_like
+            Reconstructed vectors, size (`ni`, `self.d`), `dtype`=float32
+        """
+        if x is None:
+            x = np.empty((ni, self.d), dtype=np.float32)
+        else:
+            assert x.shape == (ni, self.d)
+
+        self.reconstruct_n_c(n0, ni, swig_ptr(x))
+        return x
+
+    def replacement_update_vectors(self, keys, x):
+        n = keys.size
+        assert keys.shape == (n, )
+        assert x.shape == (n, self.d)
+
+        self.update_vectors_c(n, swig_ptr(keys), swig_ptr(x))
+
+    # The CPU does not support passed-in output buffers
+    def replacement_range_search(self, x, thresh):
+        """Search vectors that are within a distance of the query vectors.
+
+        Parameters
+        ----------
+        x : array_like
+            Query vectors, shape (n, d) where d is appropriate for the index.
+            `dtype` must be float32.
+        thresh : float
+            Threshold to select neighbors. All elements within this radius are returned,
+            except for maximum inner product indexes, where the elements above the
+            threshold are returned
+
+        Returns
+        -------
+        lims: array_like
+            Startring index of the results for each query vector, size n+1.
+        D : array_like
+            Distances of the nearest neighbors, shape `lims[n]`. The distances for
+            query i are in `D[lims[i]:lims[i+1]]`.
+        I : array_like
+            Labels of nearest neighbors, shape `lims[n]`. The labels for query i
+            are in `I[lims[i]:lims[i+1]]`.
+
+        """
+        n, d = x.shape
+        assert d == self.d
+
+        res = RangeSearchResult(n)
+        self.range_search_c(n, swig_ptr(x), thresh, res)
+        # get pointers and copy them
+        lims = rev_swig_ptr(res.lims, n + 1).copy()
+        nd = int(lims[-1])
+        D = rev_swig_ptr(res.distances, nd).copy()
+        I = rev_swig_ptr(res.labels, nd).copy()
+        return lims, D, I
+
+    def replacement_sa_encode(self, x, codes=None):
+        n, d = x.shape
+        assert d == self.d
+
+        if codes is None:
+            codes = np.empty((n, self.sa_code_size()), dtype=np.uint8)
+        else:
+            assert codes.shape == (n, self.sa_code_size())
+
+        self.sa_encode_c(n, swig_ptr(x), swig_ptr(codes))
+        return codes
+
+    def replacement_sa_decode(self, codes, x=None):
+        n, cs = codes.shape
+        assert cs == self.sa_code_size()
+
+        if x is None:
+            x = np.empty((n, self.d), dtype=np.float32)
+        else:
+            assert x.shape == (n, self.d)
+
+        self.sa_decode_c(n, swig_ptr(codes), swig_ptr(x))
+        return x
+
+    def replacement_add_sa_codes(self, codes, ids=None):
+        n, cs = codes.shape
+        assert cs == self.sa_code_size()
+        if ids is not None:
+            assert ids.shape == (n,)
+            ids = swig_ptr(ids)
+        self.add_sa_codes_c(n, swig_ptr(codes), ids)
+
+    replace_method(the_class, 'add', replacement_add)
+    replace_method(the_class, 'add_with_ids', replacement_add_with_ids)
+    replace_method(the_class, 'assign', replacement_assign)
+    replace_method(the_class, 'train', replacement_train)
+    replace_method(the_class, 'search', replacement_search)
+    replace_method(the_class, 'remove_ids', replacement_remove_ids)
+    replace_method(the_class, 'reconstruct', replacement_reconstruct)
+    replace_method(the_class, 'reconstruct_n', replacement_reconstruct_n)
+    replace_method(the_class, 'range_search', replacement_range_search)
+    replace_method(the_class, 'update_vectors', replacement_update_vectors,
+                   ignore_missing=True)
+    replace_method(the_class, 'search_and_reconstruct',
+                   replacement_search_and_reconstruct, ignore_missing=True)
+    replace_method(the_class, 'sa_encode', replacement_sa_encode)
+    replace_method(the_class, 'sa_decode', replacement_sa_decode)
+    replace_method(the_class, 'add_sa_codes', replacement_add_sa_codes,
+                ignore_missing=True)
+
+    # get/set state for pickle
+    # the data is serialized to std::vector -> numpy array -> python bytes
+    # so not very efficient for now.
+
+    def index_getstate(self):
+        return {"this": serialize_index(self).tobytes()}
+
+    def index_setstate(self, st):
+        index2 = deserialize_index(np.frombuffer(st["this"], dtype="uint8"))
+        self.this = index2.this
+
+    the_class.__getstate__ = index_getstate
+    the_class.__setstate__ = index_setstate
+
+
+
+def handle_IndexBinary(the_class):
+
+    def replacement_add(self, x):
+        n, d = x.shape
+        assert d * 8 == self.d
+        self.add_c(n, swig_ptr(x))
+
+    def replacement_add_with_ids(self, x, ids):
+        n, d = x.shape
+        assert d * 8 == self.d
+        assert ids.shape == (n, ), 'not same nb of vectors as ids'
+        self.add_with_ids_c(n, swig_ptr(x), swig_ptr(ids))
+
+    def replacement_train(self, x):
+        n, d = x.shape
+        assert d * 8 == self.d
+        self.train_c(n, swig_ptr(x))
+
+    def replacement_reconstruct(self, key):
+        x = np.empty(self.d // 8, dtype=np.uint8)
+        self.reconstruct_c(key, swig_ptr(x))
+        return x
+
+    def replacement_search(self, x, k):
+        n, d = x.shape
+        assert d * 8 == self.d
+        assert k > 0
+        distances = np.empty((n, k), dtype=np.int32)
+        labels = np.empty((n, k), dtype=np.int64)
+        self.search_c(n, swig_ptr(x),
+                      k, swig_ptr(distances),
+                      swig_ptr(labels))
+        return distances, labels
+
+    def replacement_range_search(self, x, thresh):
+        n, d = x.shape
+        assert d * 8 == self.d
+        res = RangeSearchResult(n)
+        self.range_search_c(n, swig_ptr(x), thresh, res)
+        # get pointers and copy them
+        lims = rev_swig_ptr(res.lims, n + 1).copy()
+        nd = int(lims[-1])
+        D = rev_swig_ptr(res.distances, nd).copy()
+        I = rev_swig_ptr(res.labels, nd).copy()
+        return lims, D, I
+
+    def replacement_remove_ids(self, x):
+        if isinstance(x, IDSelector):
+            sel = x
+        else:
+            assert x.ndim == 1
+            sel = IDSelectorBatch(x.size, swig_ptr(x))
+        return self.remove_ids_c(sel)
+
+    replace_method(the_class, 'add', replacement_add)
+    replace_method(the_class, 'add_with_ids', replacement_add_with_ids)
+    replace_method(the_class, 'train', replacement_train)
+    replace_method(the_class, 'search', replacement_search)
+    replace_method(the_class, 'range_search', replacement_range_search)
+    replace_method(the_class, 'reconstruct', replacement_reconstruct)
+    replace_method(the_class, 'remove_ids', replacement_remove_ids)
+
+
+def handle_VectorTransform(the_class):
+
+    def apply_method(self, x):
+        n, d = x.shape
+        assert d == self.d_in
+        y = np.empty((n, self.d_out), dtype=np.float32)
+        self.apply_noalloc(n, swig_ptr(x), swig_ptr(y))
+        return y
+
+    def replacement_reverse_transform(self, x):
+        n, d = x.shape
+        assert d == self.d_out
+        y = np.empty((n, self.d_in), dtype=np.float32)
+        self.reverse_transform_c(n, swig_ptr(x), swig_ptr(y))
+        return y
+
+    def replacement_vt_train(self, x):
+        n, d = x.shape
+        assert d == self.d_in
+        self.train_c(n, swig_ptr(x))
+
+    replace_method(the_class, 'train', replacement_vt_train)
+    # apply is reserved in Pyton...
+    the_class.apply_py = apply_method
+    the_class.apply = apply_method
+    replace_method(the_class, 'reverse_transform',
+                   replacement_reverse_transform)
+
+
+def handle_AutoTuneCriterion(the_class):
+    def replacement_set_groundtruth(self, D, I):
+        if D:
+            assert I.shape == D.shape
+        self.nq, self.gt_nnn = I.shape
+        self.set_groundtruth_c(
+            self.gt_nnn, swig_ptr(D) if D else None, swig_ptr(I))
+
+    def replacement_evaluate(self, D, I):
+        assert I.shape == D.shape
+        assert I.shape == (self.nq, self.nnn)
+        return self.evaluate_c(swig_ptr(D), swig_ptr(I))
+
+    replace_method(the_class, 'set_groundtruth', replacement_set_groundtruth)
+    replace_method(the_class, 'evaluate', replacement_evaluate)
+
+
+def handle_ParameterSpace(the_class):
+    def replacement_explore(self, index, xq, crit):
+        assert xq.shape == (crit.nq, index.d)
+        ops = OperatingPoints()
+        self.explore_c(index, crit.nq, swig_ptr(xq),
+                       crit, ops)
+        return ops
+    replace_method(the_class, 'explore', replacement_explore)
+
+
+def handle_MatrixStats(the_class):
+    original_init = the_class.__init__
+
+    def replacement_init(self, m):
+        assert len(m.shape) == 2
+        original_init(self, m.shape[0], m.shape[1], swig_ptr(m))
+
+    the_class.__init__ = replacement_init
+
+handle_MatrixStats(MatrixStats)
+
+def handle_IOWriter(the_class):
+
+    def write_bytes(self, b):
+        return self(swig_ptr(b), 1, len(b))
+
+    the_class.write_bytes = write_bytes
+
+handle_IOWriter(IOWriter)
+
+def handle_IOReader(the_class):
+
+    def read_bytes(self, totsz):
+        buf = bytearray(totsz)
+        was_read = self(swig_ptr(buf), 1, len(buf))
+        return bytes(buf[:was_read])
+
+    the_class.read_bytes = read_bytes
+
+handle_IOReader(IOReader)
+
+this_module = sys.modules[__name__]
+
+
+for symbol in dir(this_module):
+    obj = getattr(this_module, symbol)
+    # print symbol, isinstance(obj, (type, types.ClassType))
+    if inspect.isclass(obj):
+        the_class = obj
+        if issubclass(the_class, Index):
+            handle_Index(the_class)
+
+        if issubclass(the_class, IndexBinary):
+            handle_IndexBinary(the_class)
+
+        if issubclass(the_class, VectorTransform):
+            handle_VectorTransform(the_class)
+
+        if issubclass(the_class, AutoTuneCriterion):
+            handle_AutoTuneCriterion(the_class)
+
+        if issubclass(the_class, ParameterSpace):
+            handle_ParameterSpace(the_class)
+
+        if issubclass(the_class, IndexNSG):
+            handle_NSG(the_class)
+
+###########################################
+# Utility to add a deprecation warning to
+# classes from the SWIG interface
+###########################################
+
+def _make_deprecated_swig_class(deprecated_name, base_name):
+    """
+    Dynamically construct deprecated classes as wrappers around renamed ones
+
+    The deprecation warning added in their __new__-method will trigger upon
+    construction of an instance of the class, but only once per session.
+
+    We do this here (in __init__.py) because the base classes are defined in
+    the SWIG interface, making it cumbersome to add the deprecation there.
+
+    Parameters
+    ----------
+    deprecated_name : string
+        Name of the class to be deprecated; _not_ present in SWIG interface.
+    base_name : string
+        Name of the class that is replacing deprecated_name; must already be
+        imported into the current namespace.
+
+    Returns
+    -------
+    None
+        However, the deprecated class gets added to the faiss namespace
+    """
+    base_class = globals()[base_name]
+    def new_meth(cls, *args, **kwargs):
+        msg = f"The class faiss.{deprecated_name} is deprecated in favour of faiss.{base_name}!"
+        warnings.warn(msg, DeprecationWarning, stacklevel=2)
+        instance = super(base_class, cls).__new__(cls, *args, **kwargs)
+        return instance
+
+    # three-argument version of "type" uses (name, tuple-of-bases, dict-of-attributes)
+    klazz = type(deprecated_name, (base_class,), {"__new__": new_meth})
+
+    # this ends up adding the class to the "faiss" namespace, in a way that it
+    # is available both through "import faiss" and "from faiss import *"
+    globals()[deprecated_name] = klazz
+
+###########################################
+# Add Python references to objects
+# we do this at the Python class wrapper level.
+###########################################
+
+def add_ref_in_constructor(the_class, parameter_no):
+    # adds a reference to parameter parameter_no in self
+    # so that that parameter does not get deallocated before self
+    original_init = the_class.__init__
+
+    def replacement_init(self, *args):
+        original_init(self, *args)
+        self.referenced_objects = [args[parameter_no]]
+
+    def replacement_init_multiple(self, *args):
+        original_init(self, *args)
+        pset = parameter_no[len(args)]
+        self.referenced_objects = [args[no] for no in pset]
+
+    if type(parameter_no) == dict:
+        # a list of parameters to keep, depending on the number of arguments
+        the_class.__init__ = replacement_init_multiple
+    else:
+        the_class.__init__ = replacement_init
+
+
+def add_ref_in_method(the_class, method_name, parameter_no):
+    original_method = getattr(the_class, method_name)
+    def replacement_method(self, *args):
+        ref = args[parameter_no]
+        if not hasattr(self, 'referenced_objects'):
+            self.referenced_objects = [ref]
+        else:
+            self.referenced_objects.append(ref)
+        return original_method(self, *args)
+    setattr(the_class, method_name, replacement_method)
+
+def add_ref_in_function(function_name, parameter_no):
+    # assumes the function returns an object
+    original_function = getattr(this_module, function_name)
+    def replacement_function(*args):
+        result = original_function(*args)
+        ref = args[parameter_no]
+        result.referenced_objects = [ref]
+        return result
+    setattr(this_module, function_name, replacement_function)
+
+add_ref_in_constructor(IndexIVFFlat, 0)
+add_ref_in_constructor(IndexIVFFlatDedup, 0)
+add_ref_in_constructor(IndexPreTransform, {2: [0, 1], 1: [0]})
+add_ref_in_method(IndexPreTransform, 'prepend_transform', 0)
+add_ref_in_constructor(IndexIVFPQ, 0)
+add_ref_in_constructor(IndexIVFPQR, 0)
+add_ref_in_constructor(IndexIVFPQFastScan, 0)
+add_ref_in_constructor(IndexIVFResidualQuantizer, 0)
+add_ref_in_constructor(IndexIVFLocalSearchQuantizer, 0)
+add_ref_in_constructor(Index2Layer, 0)
+add_ref_in_constructor(Level1Quantizer, 0)
+add_ref_in_constructor(IndexIVFScalarQuantizer, 0)
+add_ref_in_constructor(IndexIDMap, 0)
+add_ref_in_constructor(IndexIDMap2, 0)
+add_ref_in_constructor(IndexHNSW, 0)
+add_ref_in_method(IndexShards, 'add_shard', 0)
+add_ref_in_method(IndexBinaryShards, 'add_shard', 0)
+add_ref_in_constructor(IndexRefineFlat, {2:[0], 1:[0]})
+add_ref_in_constructor(IndexRefine, {2:[0, 1]})
+
+add_ref_in_constructor(IndexBinaryIVF, 0)
+add_ref_in_constructor(IndexBinaryFromFloat, 0)
+add_ref_in_constructor(IndexBinaryIDMap, 0)
+add_ref_in_constructor(IndexBinaryIDMap2, 0)
+
+add_ref_in_method(IndexReplicas, 'addIndex', 0)
+add_ref_in_method(IndexBinaryReplicas, 'addIndex', 0)
+
+add_ref_in_constructor(BufferedIOWriter, 0)
+add_ref_in_constructor(BufferedIOReader, 0)
+
+# seems really marginal...
+# remove_ref_from_method(IndexReplicas, 'removeIndex', 0)
+
+###########################################
+# GPU functions
+###########################################
+
+
+def index_cpu_to_gpu_multiple_py(resources, index, co=None, gpus=None):
+    """ builds the C++ vectors for the GPU indices and the
+    resources. Handles the case where the resources are assigned to
+    the list of GPUs """
+    if gpus is None:
+        gpus = range(len(resources))
+    vres = GpuResourcesVector()
+    vdev = Int32Vector()
+    for i, res in zip(gpus, resources):
+        vdev.push_back(i)
+        vres.push_back(res)
+    index = index_cpu_to_gpu_multiple(vres, vdev, index, co)
+    return index
+
+
+def index_cpu_to_all_gpus(index, co=None, ngpu=-1):
+    index_gpu = index_cpu_to_gpus_list(index, co=co, gpus=None, ngpu=ngpu)
+    return index_gpu
+
+
+def index_cpu_to_gpus_list(index, co=None, gpus=None, ngpu=-1):
+    """ Here we can pass list of GPU ids as a parameter or ngpu to
+    use first n GPU's. gpus mut be a list or None"""
+    if (gpus is None) and (ngpu == -1):  # All blank
+        gpus = range(get_num_gpus())
+    elif (gpus is None) and (ngpu != -1):  # Get number of GPU's only
+        gpus = range(ngpu)
+    res = [StandardGpuResources() for _ in gpus]
+    index_gpu = index_cpu_to_gpu_multiple_py(res, index, co, gpus)
+    return index_gpu
+
+# allows numpy ndarray usage with bfKnn
+def knn_gpu(res, xq, xb, k, D=None, I=None, metric=METRIC_L2):
+    """
+    Compute the k nearest neighbors of a vector on one GPU without constructing an index
+
+    Parameters
+    ----------
+    res : StandardGpuResources
+        GPU resources to use during computation
+    xq : array_like
+        Query vectors, shape (nq, d) where d is appropriate for the index.
+        `dtype` must be float32.
+    xb : array_like
+        Database vectors, shape (nb, d) where d is appropriate for the index.
+        `dtype` must be float32.
+    k : int
+        Number of nearest neighbors.
+    D : array_like, optional
+        Output array for distances of the nearest neighbors, shape (nq, k)
+    I : array_like, optional
+        Output array for the nearest neighbors, shape (nq, k)
+    distance_type : MetricType, optional
+        distance measure to use (either METRIC_L2 or METRIC_INNER_PRODUCT)
+
+    Returns
+    -------
+    D : array_like
+        Distances of the nearest neighbors, shape (nq, k)
+    I : array_like
+        Labels of the nearest neighbors, shape (nq, k)
+    """
+    nq, d = xq.shape
+    if xq.flags.c_contiguous:
+        xq_row_major = True
+    elif xq.flags.f_contiguous:
+        xq = xq.T
+        xq_row_major = False
+    else:
+        raise TypeError('xq matrix should be row (C) or column-major (Fortran)')
+
+    xq_ptr = swig_ptr(xq)
+
+    if xq.dtype == np.float32:
+        xq_type = DistanceDataType_F32
+    elif xq.dtype == np.float16:
+        xq_type = DistanceDataType_F16
+    else:
+        raise TypeError('xq must be f32 or f16')
+
+    nb, d2 = xb.shape
+    assert d2 == d
+    if xb.flags.c_contiguous:
+        xb_row_major = True
+    elif xb.flags.f_contiguous:
+        xb = xb.T
+        xb_row_major = False
+    else:
+        raise TypeError('xb matrix should be row (C) or column-major (Fortran)')
+
+    xb_ptr = swig_ptr(xb)
+
+    if xb.dtype == np.float32:
+        xb_type = DistanceDataType_F32
+    elif xb.dtype == np.float16:
+        xb_type = DistanceDataType_F16
+    else:
+        raise TypeError('xb must be float32 or float16')
+
+    if D is None:
+        D = np.empty((nq, k), dtype=np.float32)
+    else:
+        assert D.shape == (nq, k)
+        # interface takes void*, we need to check this
+        assert D.dtype == np.float32
+
+    D_ptr = swig_ptr(D)
+
+    if I is None:
+        I = np.empty((nq, k), dtype=np.int64)
+    else:
+        assert I.shape == (nq, k)
+
+    I_ptr = swig_ptr(I)
+
+    if I.dtype == np.int64:
+        I_type = IndicesDataType_I64
+    elif I.dtype == I.dtype == np.int32:
+        I_type = IndicesDataType_I32
+    else:
+        raise TypeError('I must be i64 or i32')
+
+    args = GpuDistanceParams()
+    args.metric = metric
+    args.k = k
+    args.dims = d
+    args.vectors = xb_ptr
+    args.vectorsRowMajor = xb_row_major
+    args.vectorType = xb_type
+    args.numVectors = nb
+    args.queries = xq_ptr
+    args.queriesRowMajor = xq_row_major
+    args.queryType = xq_type
+    args.numQueries = nq
+    args.outDistances = D_ptr
+    args.outIndices = I_ptr
+    args.outIndicesType = I_type
+
+    # no stream synchronization needed, inputs and outputs are guaranteed to
+    # be on the CPU (numpy arrays)
+    bfKnn(res, args)
+
+    return D, I
+
+# allows numpy ndarray usage with bfKnn for all pairwise distances
+def pairwise_distance_gpu(res, xq, xb, D=None, metric=METRIC_L2):
+    """
+    Compute all pairwise distances between xq and xb on one GPU without constructing an index
+
+    Parameters
+    ----------
+    res : StandardGpuResources
+        GPU resources to use during computation
+    xq : array_like
+        Query vectors, shape (nq, d) where d is appropriate for the index.
+        `dtype` must be float32.
+    xb : array_like
+        Database vectors, shape (nb, d) where d is appropriate for the index.
+        `dtype` must be float32.
+    D : array_like, optional
+        Output array for all pairwise distances, shape (nq, nb)
+    distance_type : MetricType, optional
+        distance measure to use (either METRIC_L2 or METRIC_INNER_PRODUCT)
+
+    Returns
+    -------
+    D : array_like
+        All pairwise distances, shape (nq, nb)
+    """
+    nq, d = xq.shape
+    if xq.flags.c_contiguous:
+        xq_row_major = True
+    elif xq.flags.f_contiguous:
+        xq = xq.T
+        xq_row_major = False
+    else:
+        raise TypeError('xq matrix should be row (C) or column-major (Fortran)')
+
+    xq_ptr = swig_ptr(xq)
+
+    if xq.dtype == np.float32:
+        xq_type = DistanceDataType_F32
+    elif xq.dtype == np.float16:
+        xq_type = DistanceDataType_F16
+    else:
+        raise TypeError('xq must be float32 or float16')
+
+    nb, d2 = xb.shape
+    assert d2 == d
+    if xb.flags.c_contiguous:
+        xb_row_major = True
+    elif xb.flags.f_contiguous:
+        xb = xb.T
+        xb_row_major = False
+    else:
+        raise TypeError('xb matrix should be row (C) or column-major (Fortran)')
+
+    xb_ptr = swig_ptr(xb)
+
+    if xb.dtype == np.float32:
+        xb_type = DistanceDataType_F32
+    elif xb.dtype == np.float16:
+        xb_type = DistanceDataType_F16
+    else:
+        raise TypeError('xb must be float32 or float16')
+
+    if D is None:
+        D = np.empty((nq, nb), dtype=np.float32)
+    else:
+        assert D.shape == (nq, nb)
+        # interface takes void*, we need to check this
+        assert D.dtype == np.float32
+
+    D_ptr = swig_ptr(D)
+
+    args = GpuDistanceParams()
+    args.metric = metric
+    args.k = -1 # selects all pairwise distances
+    args.dims = d
+    args.vectors = xb_ptr
+    args.vectorsRowMajor = xb_row_major
+    args.vectorType = xb_type
+    args.numVectors = nb
+    args.queries = xq_ptr
+    args.queriesRowMajor = xq_row_major
+    args.queryType = xq_type
+    args.numQueries = nq
+    args.outDistances = D_ptr
+
+    # no stream synchronization needed, inputs and outputs are guaranteed to
+    # be on the CPU (numpy arrays)
+    bfKnn(res, args)
+
+    return D
+
+
+###########################################
+# numpy array / std::vector conversions
+###########################################
+
+sizeof_long = array.array('l').itemsize
+deprecated_name_map = {
+    # deprecated: replacement
+    'Float': 'Float32',
+    'Double': 'Float64',
+    'Char': 'Int8',
+    'Int': 'Int32',
+    'Long': 'Int32' if sizeof_long == 4 else 'Int64',
+    'LongLong': 'Int64',
+    'Byte': 'UInt8',
+    # previously misspelled variant
+    'Uint64': 'UInt64',
+}
+
+for depr_prefix, base_prefix in deprecated_name_map.items():
+    _make_deprecated_swig_class(depr_prefix + "Vector", base_prefix + "Vector")
+
+    # same for the three legacy *VectorVector classes
+    if depr_prefix in ['Float', 'Long', 'Byte']:
+        _make_deprecated_swig_class(depr_prefix + "VectorVector",
+                                    base_prefix + "VectorVector")
+
+# mapping from vector names in swigfaiss.swig and the numpy dtype names
+# TODO: once deprecated classes are removed, remove the dict and just use .lower() below
+vector_name_map = {
+    'Float32': 'float32',
+    'Float64': 'float64',
+    'Int8': 'int8',
+    'Int16': 'int16',
+    'Int32': 'int32',
+    'Int64': 'int64',
+    'UInt8': 'uint8',
+    'UInt16': 'uint16',
+    'UInt32': 'uint32',
+    'UInt64': 'uint64',
+    **{k: v.lower() for k, v in deprecated_name_map.items()}
+}
+
+
+def vector_to_array(v):
+    """ convert a C++ vector to a numpy array """
+    classname = v.__class__.__name__
+    assert classname.endswith('Vector')
+    dtype = np.dtype(vector_name_map[classname[:-6]])
+    a = np.empty(v.size(), dtype=dtype)
+    if v.size() > 0:
+        memcpy(swig_ptr(a), v.data(), a.nbytes)
+    return a
+
+
+def vector_float_to_array(v):
+    return vector_to_array(v)
+
+
+def copy_array_to_vector(a, v):
+    """ copy a numpy array to a vector """
+    n, = a.shape
+    classname = v.__class__.__name__
+    assert classname.endswith('Vector')
+    dtype = np.dtype(vector_name_map[classname[:-6]])
+    assert dtype == a.dtype, (
+        'cannot copy a %s array to a %s (should be %s)' % (
+            a.dtype, classname, dtype))
+    v.resize(n)
+    if n > 0:
+        memcpy(v.data(), swig_ptr(a), a.nbytes)
+
+# same for AlignedTable
+
+def copy_array_to_AlignedTable(a, v):
+    n, = a.shape
+    # TODO check class name
+    assert v.itemsize() == a.itemsize
+    v.resize(n)
+    if n > 0:
+        memcpy(v.get(), swig_ptr(a), a.nbytes)
+
+def array_to_AlignedTable(a):
+    if a.dtype == 'uint16':
+        v = AlignedTableUint16(a.size)
+    elif a.dtype == 'uint8':
+        v = AlignedTableUint8(a.size)
+    else:
+        assert False
+    copy_array_to_AlignedTable(a, v)
+    return v
+
+def AlignedTable_to_array(v):
+    """ convert an AlignedTable to a numpy array """
+    classname = v.__class__.__name__
+    assert classname.startswith('AlignedTable')
+    dtype = classname[12:].lower()
+    a = np.empty(v.size(), dtype=dtype)
+    if a.size > 0:
+        memcpy(swig_ptr(a), v.data(), a.nbytes)
+    return a
+
+###########################################
+# Wrapper for a few functions
+###########################################
+
+def kmin(array, k):
+    """return k smallest values (and their indices) of the lines of a
+    float32 array"""
+    m, n = array.shape
+    I = np.zeros((m, k), dtype='int64')
+    D = np.zeros((m, k), dtype='float32')
+    ha = float_maxheap_array_t()
+    ha.ids = swig_ptr(I)
+    ha.val = swig_ptr(D)
+    ha.nh = m
+    ha.k = k
+    ha.heapify()
+    ha.addn(n, swig_ptr(array))
+    ha.reorder()
+    return D, I
+
+
+def kmax(array, k):
+    """return k largest values (and their indices) of the lines of a
+    float32 array"""
+    m, n = array.shape
+    I = np.zeros((m, k), dtype='int64')
+    D = np.zeros((m, k), dtype='float32')
+    ha = float_minheap_array_t()
+    ha.ids = swig_ptr(I)
+    ha.val = swig_ptr(D)
+    ha.nh = m
+    ha.k = k
+    ha.heapify()
+    ha.addn(n, swig_ptr(array))
+    ha.reorder()
+    return D, I
+
+
+def pairwise_distances(xq, xb, mt=METRIC_L2, metric_arg=0):
+    """compute the whole pairwise distance matrix between two sets of
+    vectors"""
+    nq, d = xq.shape
+    nb, d2 = xb.shape
+    assert d == d2
+    dis = np.empty((nq, nb), dtype='float32')
+    if mt == METRIC_L2:
+        pairwise_L2sqr(
+            d, nq, swig_ptr(xq),
+            nb, swig_ptr(xb),
+            swig_ptr(dis))
+    else:
+        pairwise_extra_distances(
+            d, nq, swig_ptr(xq),
+            nb, swig_ptr(xb),
+            mt, metric_arg,
+            swig_ptr(dis))
+    return dis
+
+
+
+
+def rand(n, seed=12345):
+    res = np.empty(n, dtype='float32')
+    float_rand(swig_ptr(res), res.size, seed)
+    return res
+
+
+def randint(n, seed=12345, vmax=None):
+    res = np.empty(n, dtype='int64')
+    if vmax is None:
+        int64_rand(swig_ptr(res), res.size, seed)
+    else:
+        int64_rand_max(swig_ptr(res), res.size, vmax, seed)
+    return res
+
+lrand = randint
+
+def randn(n, seed=12345):
+    res = np.empty(n, dtype='float32')
+    float_randn(swig_ptr(res), res.size, seed)
+    return res
+
+
+def eval_intersection(I1, I2):
+    """ size of intersection between each line of two result tables"""
+    n = I1.shape[0]
+    assert I2.shape[0] == n
+    k1, k2 = I1.shape[1], I2.shape[1]
+    ninter = 0
+    for i in range(n):
+        ninter += ranklist_intersection_size(
+            k1, swig_ptr(I1[i]), k2, swig_ptr(I2[i]))
+    return ninter
+
+
+def normalize_L2(x):
+    fvec_renorm_L2(x.shape[1], x.shape[0], swig_ptr(x))
+
+######################################################
+# MapLong2Long interface
+######################################################
+
+def replacement_map_add(self, keys, vals):
+    n, = keys.shape
+    assert (n,) == keys.shape
+    self.add_c(n, swig_ptr(keys), swig_ptr(vals))
+
+def replacement_map_search_multiple(self, keys):
+    n, = keys.shape
+    vals = np.empty(n, dtype='int64')
+    self.search_multiple_c(n, swig_ptr(keys), swig_ptr(vals))
+    return vals
+
+replace_method(MapLong2Long, 'add', replacement_map_add)
+replace_method(MapLong2Long, 'search_multiple', replacement_map_search_multiple)
+
+######################################################
+# search_with_parameters interface
+######################################################
+
+search_with_parameters_c = search_with_parameters
+
+def search_with_parameters(index, x, k, params=None, output_stats=False):
+    n, d = x.shape
+    assert d == index.d
+    if not params:
+        # if not provided use the ones set in the IVF object
+        params = IVFSearchParameters()
+        index_ivf = extract_index_ivf(index)
+        params.nprobe = index_ivf.nprobe
+        params.max_codes = index_ivf.max_codes
+    nb_dis = np.empty(1, 'uint64')
+    ms_per_stage = np.empty(3, 'float64')
+    distances = np.empty((n, k), dtype=np.float32)
+    labels = np.empty((n, k), dtype=np.int64)
+    search_with_parameters_c(
+        index, n, swig_ptr(x),
+        k, swig_ptr(distances),
+        swig_ptr(labels),
+        params, swig_ptr(nb_dis), swig_ptr(ms_per_stage)
+    )
+    if not output_stats:
+        return distances, labels
+    else:
+        stats = {
+            'ndis': nb_dis[0],
+            'pre_transform_ms': ms_per_stage[0],
+            'coarse_quantizer_ms': ms_per_stage[1],
+            'invlist_scan_ms': ms_per_stage[2],
+        }
+        return distances, labels, stats
+
+range_search_with_parameters_c = range_search_with_parameters
+
+def range_search_with_parameters(index, x, radius, params=None, output_stats=False):
+    n, d = x.shape
+    assert d == index.d
+    if not params:
+        # if not provided use the ones set in the IVF object
+        params = IVFSearchParameters()
+        index_ivf = extract_index_ivf(index)
+        params.nprobe = index_ivf.nprobe
+        params.max_codes = index_ivf.max_codes
+    nb_dis = np.empty(1, 'uint64')
+    ms_per_stage = np.empty(3, 'float64')
+    res = RangeSearchResult(n)
+    range_search_with_parameters_c(
+        index, n, swig_ptr(x),
+        radius, res,
+        params, swig_ptr(nb_dis), swig_ptr(ms_per_stage)
+    )
+    lims = rev_swig_ptr(res.lims, n + 1).copy()
+    nd = int(lims[-1])
+    Dout = rev_swig_ptr(res.distances, nd).copy()
+    Iout = rev_swig_ptr(res.labels, nd).copy()
+    if not output_stats:
+        return lims, Dout, Iout
+    else:
+        stats = {
+            'ndis': nb_dis[0],
+            'pre_transform_ms': ms_per_stage[0],
+            'coarse_quantizer_ms': ms_per_stage[1],
+            'invlist_scan_ms': ms_per_stage[2],
+        }
+        return lims, Dout, Iout, stats
+
+
+######################################################
+# KNN function
+######################################################
+
+def knn(xq, xb, k, metric=METRIC_L2):
+    """
+    Compute the k nearest neighbors of a vector without constructing an index
+
+
+    Parameters
+    ----------
+    xq : array_like
+        Query vectors, shape (nq, d) where d is appropriate for the index.
+        `dtype` must be float32.
+    xb : array_like
+        Database vectors, shape (nb, d) where d is appropriate for the index.
+        `dtype` must be float32.
+    k : int
+        Number of nearest neighbors.
+    distance_type : MetricType, optional
+        distance measure to use (either METRIC_L2 or METRIC_INNER_PRODUCT)
+
+    Returns
+    -------
+    D : array_like
+        Distances of the nearest neighbors, shape (nq, k)
+    I : array_like
+        Labels of the nearest neighbors, shape (nq, k)
+    """
+    nq, d = xq.shape
+    nb, d2 = xb.shape
+    assert d == d2
+
+    I = np.empty((nq, k), dtype='int64')
+    D = np.empty((nq, k), dtype='float32')
+
+    if metric == METRIC_L2:
+        heaps = float_maxheap_array_t()
+        heaps.k = k
+        heaps.nh = nq
+        heaps.val = swig_ptr(D)
+        heaps.ids = swig_ptr(I)
+        knn_L2sqr(
+            swig_ptr(xq), swig_ptr(xb),
+            d, nq, nb, heaps
+        )
+    elif metric == METRIC_INNER_PRODUCT:
+        heaps = float_minheap_array_t()
+        heaps.k = k
+        heaps.nh = nq
+        heaps.val = swig_ptr(D)
+        heaps.ids = swig_ptr(I)
+        knn_inner_product(
+            swig_ptr(xq), swig_ptr(xb),
+            d, nq, nb, heaps
+        )
+    else:
+        raise NotImplementedError("only L2 and INNER_PRODUCT are supported")
+    return D, I
+
+
+###########################################
+# Kmeans object
+###########################################
+
+
+class Kmeans:
+    """Object that performs k-means clustering and manages the centroids.
+    The `Kmeans` class is essentially a wrapper around the C++ `Clustering` object.
+
+    Parameters
+    ----------
+    d : int
+       dimension of the vectors to cluster
+    k : int
+       number of clusters
+    gpu: bool or int, optional
+       False: don't use GPU
+       True: use all GPUs
+       number: use this many GPUs
+    progressive_dim_steps:
+        use a progressive dimension clustering (with that number of steps)
+
+    Subsequent parameters are fields of the Clustring object. The most important are:
+
+    niter: int, optional
+       clustering iterations
+    nredo: int, optional
+       redo clustering this many times and keep best
+    verbose: bool, optional
+    spherical: bool, optional
+       do we want normalized centroids?
+    int_centroids: bool, optional
+       round centroids coordinates to integer
+    seed: int, optional
+       seed for the random number generator
+
+    """
+
+
+    def __init__(self, d, k, **kwargs):
+        """d: input dimension, k: nb of centroids. Additional
+         parameters are passed on the ClusteringParameters object,
+         including niter=25, verbose=False, spherical = False
+        """
+        self.d = d
+        self.k = k
+        self.gpu = False
+        if "progressive_dim_steps" in kwargs:
+            self.cp = ProgressiveDimClusteringParameters()
+        else:
+            self.cp = ClusteringParameters()
+        for k, v in kwargs.items():
+            if k == 'gpu':
+                if v == True or v == -1:
+                    v = get_num_gpus()
+                self.gpu = v
+            else:
+                # if this raises an exception, it means that it is a non-existent field
+                getattr(self.cp, k)
+                setattr(self.cp, k, v)
+        self.centroids = None
+
+    def train(self, x, weights=None, init_centroids=None):
+        """ Perform k-means clustering.
+        On output of the function call:
+
+        - the centroids are in the centroids field of size (`k`, `d`).
+
+        - the objective value at each iteration is in the array obj (size `niter`)
+
+        - detailed optimization statistics are in the array iteration_stats.
+
+        Parameters
+        ----------
+        x : array_like
+            Training vectors, shape (n, d), `dtype` must be float32 and n should
+            be larger than the number of clusters `k`.
+        weights : array_like
+            weight associated to each vector, shape `n`
+        init_centroids : array_like
+            initial set of centroids, shape (n, d)
+
+        Returns
+        -------
+        final_obj: float
+            final optimization objective
+
+        """
+        n, d = x.shape
+        assert d == self.d
+
+        if self.cp.__class__ == ClusteringParameters:
+            # regular clustering
+            clus = Clustering(d, self.k, self.cp)
+            if init_centroids is not None:
+                nc, d2 = init_centroids.shape
+                assert d2 == d
+                copy_array_to_vector(init_centroids.ravel(), clus.centroids)
+            if self.cp.spherical:
+                self.index = IndexFlatIP(d)
+            else:
+                self.index = IndexFlatL2(d)
+            if self.gpu:
+                self.index = index_cpu_to_all_gpus(self.index, ngpu=self.gpu)
+            clus.train(x, self.index, weights)
+        else:
+            # not supported for progressive dim
+            assert weights is None
+            assert init_centroids is None
+            assert not self.cp.spherical
+            clus = ProgressiveDimClustering(d, self.k, self.cp)
+            if self.gpu:
+                fac = GpuProgressiveDimIndexFactory(ngpu=self.gpu)
+            else:
+                fac = ProgressiveDimIndexFactory()
+            clus.train(n, swig_ptr(x), fac)
+
+        centroids = vector_float_to_array(clus.centroids)
+
+        self.centroids = centroids.reshape(self.k, d)
+        stats = clus.iteration_stats
+        stats = [stats.at(i) for i in range(stats.size())]
+        self.obj = np.array([st.obj for st in stats])
+        # copy all the iteration_stats objects to a python array
+        stat_fields = 'obj time time_search imbalance_factor nsplit'.split()
+        self.iteration_stats = [
+            {field: getattr(st, field) for field in stat_fields}
+            for st in stats
+        ]
+        return self.obj[-1] if self.obj.size > 0 else 0.0
+
+    def assign(self, x):
+        assert self.centroids is not None, "should train before assigning"
+        self.index.reset()
+        self.index.add(self.centroids)
+        D, I = self.index.search(x, 1)
+        return D.ravel(), I.ravel()
+
+# IndexProxy was renamed to IndexReplicas, remap the old name for any old code
+# people may have
+IndexProxy = IndexReplicas
+ConcatenatedInvertedLists = HStackInvertedLists
+IndexResidual = IndexResidualQuantizer
+
+###########################################
+# serialization of indexes to byte arrays
+###########################################
+
+def serialize_index(index):
+    """ convert an index to a numpy uint8 array  """
+    writer = VectorIOWriter()
+    write_index(index, writer)
+    return vector_to_array(writer.data)
+
+def deserialize_index(data):
+    reader = VectorIOReader()
+    copy_array_to_vector(data, reader.data)
+    return read_index(reader)
+
+def serialize_index_binary(index):
+    """ convert an index to a numpy uint8 array  """
+    writer = VectorIOWriter()
+    write_index_binary(index, writer)
+    return vector_to_array(writer.data)
+
+def deserialize_index_binary(data):
+    reader = VectorIOReader()
+    copy_array_to_vector(data, reader.data)
+    return read_index_binary(reader)
+
+
+###########################################
+# ResultHeap
+###########################################
+
+class ResultHeap:
+    """Accumulate query results from a sliced dataset. The final result will
+    be in self.D, self.I."""
+
+    def __init__(self, nq, k, keep_max=False):
+        " nq: number of query vectors, k: number of results per query "
+        self.I = np.zeros((nq, k), dtype='int64')
+        self.D = np.zeros((nq, k), dtype='float32')
+        self.nq, self.k = nq, k
+        if keep_max:
+            heaps = float_minheap_array_t()
+        else:
+            heaps = float_maxheap_array_t()
+        heaps.k = k
+        heaps.nh = nq
+        heaps.val = swig_ptr(self.D)
+        heaps.ids = swig_ptr(self.I)
+        heaps.heapify()
+        self.heaps = heaps
+
+    def add_result(self, D, I):
+        """D, I do not need to be in a particular order (heap or sorted)"""
+        nq, kd = D.shape
+        assert I.shape == (nq, kd)
+        assert nq == self.nq
+        self.heaps.addn_with_ids(
+            kd, swig_ptr(D),
+            swig_ptr(I), kd)
+
+    def finalize(self):
+        self.heaps.reorder()
diff --git a/build/faiss/python/_swigfaiss.so b/build/faiss/python/_swigfaiss.so
new file mode 100755
index 0000000000000000000000000000000000000000..33803b89f186d024225c405417a2632a64511432
Binary files /dev/null and b/build/faiss/python/_swigfaiss.so differ
diff --git a/build/faiss/python/cmake_install.cmake b/build/faiss/python/cmake_install.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..a52dd78b19f01a977c7d6e2a540f7d5634a160cd
--- /dev/null
+++ b/build/faiss/python/cmake_install.cmake
@@ -0,0 +1,39 @@
+# Install script for directory: /home/huchen/FAISS/faiss/faiss/python
+
+# Set the install prefix
+if(NOT DEFINED CMAKE_INSTALL_PREFIX)
+  set(CMAKE_INSTALL_PREFIX "/usr/local")
+endif()
+string(REGEX REPLACE "/$" "" CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
+
+# Set the install configuration name.
+if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME)
+  if(BUILD_TYPE)
+    string(REGEX REPLACE "^[^A-Za-z0-9_]+" ""
+           CMAKE_INSTALL_CONFIG_NAME "${BUILD_TYPE}")
+  else()
+    set(CMAKE_INSTALL_CONFIG_NAME "")
+  endif()
+  message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"")
+endif()
+
+# Set the component getting installed.
+if(NOT CMAKE_INSTALL_COMPONENT)
+  if(COMPONENT)
+    message(STATUS "Install component: \"${COMPONENT}\"")
+    set(CMAKE_INSTALL_COMPONENT "${COMPONENT}")
+  else()
+    set(CMAKE_INSTALL_COMPONENT)
+  endif()
+endif()
+
+# Install shared libraries without execute permission?
+if(NOT DEFINED CMAKE_INSTALL_SO_NO_EXE)
+  set(CMAKE_INSTALL_SO_NO_EXE "0")
+endif()
+
+# Is this installation the result of a crosscompile?
+if(NOT DEFINED CMAKE_CROSSCOMPILING)
+  set(CMAKE_CROSSCOMPILING "FALSE")
+endif()
+
diff --git a/build/faiss/python/contrib/__init__.py b/build/faiss/python/contrib/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/build/faiss/python/contrib/client_server.py b/build/faiss/python/contrib/client_server.py
new file mode 100755
index 0000000000000000000000000000000000000000..99b5b12fd9966589855e019ebc03c8dbe7ad2af5
--- /dev/null
+++ b/build/faiss/python/contrib/client_server.py
@@ -0,0 +1,91 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+from multiprocessing.dummy import Pool as ThreadPool
+import faiss
+from typing import List, Tuple
+
+from . import rpc
+
+############################################################
+# Server implementation
+############################################################
+
+
+class SearchServer(rpc.Server):
+    """ Assign version that can be exposed via RPC """
+
+    def __init__(self, s: int, index: faiss.Index):
+        rpc.Server.__init__(self, s)
+        self.index = index
+        self.index_ivf = faiss.extract_index_ivf(index)
+
+    def set_nprobe(self, nprobe: int) -> int:
+        """ set nprobe field """
+        self.index_ivf.nprobe = nprobe
+
+    def get_ntotal(self) -> int:
+        return self.index.ntotal
+
+    def __getattr__(self, f):
+        # all other functions get forwarded to the index
+        return getattr(self.index, f)
+
+
+def run_index_server(index: faiss.Index, port: int, v6: bool = False):
+    """ serve requests for that index forerver """
+    rpc.run_server(
+        lambda s: SearchServer(s, index),
+        port, v6=v6)
+
+
+############################################################
+# Client implementation
+############################################################
+
+class ClientIndex:
+    """manages a set of distance sub-indexes. The sub_indexes search a
+    subset of the inverted lists. Searches are merged afterwards
+    """
+
+    def __init__(self, machine_ports: List[Tuple[str, int]], v6: bool = False):
+        """ connect to a series of (host, port) pairs """
+        self.sub_indexes = []
+        for machine, port in machine_ports:
+            self.sub_indexes.append(rpc.Client(machine, port, v6))
+
+        self.ni = len(self.sub_indexes)
+        # pool of threads. Each thread manages one sub-index.
+        self.pool = ThreadPool(self.ni)
+        # test connection...
+        self.ntotal = self.get_ntotal()
+        self.verbose = False
+
+    def set_nprobe(self, nprobe: int) -> None:
+        self.pool.map(
+            lambda idx: idx.set_nprobe(nprobe),
+            self.sub_indexes
+        )
+
+    def set_omp_num_threads(self, nt: int) -> None:
+        self.pool.map(
+            lambda idx: idx.set_omp_num_threads(nt),
+            self.sub_indexes
+        )
+
+    def get_ntotal(self) -> None:
+        return sum(self.pool.map(
+            lambda idx: idx.get_ntotal(),
+            self.sub_indexes
+        ))
+
+    def search(self, x, k: int):
+
+        rh = faiss.ResultHeap(x.shape[0], k)
+
+        for Di, Ii in self.pool.imap(lambda idx: idx.search(x, k), self.sub_indexes):
+            rh.add_result(Di, Ii)
+        rh.finalize()
+        return rh.D, rh.I
diff --git a/build/faiss/python/contrib/datasets.py b/build/faiss/python/contrib/datasets.py
new file mode 100644
index 0000000000000000000000000000000000000000..b255b06adc30e8f8e378ab4b37c361c1083bfe64
--- /dev/null
+++ b/build/faiss/python/contrib/datasets.py
@@ -0,0 +1,312 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+import os
+import numpy as np
+import faiss
+
+from .vecs_io import fvecs_read, ivecs_read, bvecs_mmap, fvecs_mmap
+from .exhaustive_search import knn
+
+class Dataset:
+    """ Generic abstract class for a test dataset """
+
+    def __init__(self):
+        """ the constructor should set the following fields: """
+        self.d = -1
+        self.metric = 'L2'   # or IP
+        self.nq = -1
+        self.nb = -1
+        self.nt = -1
+
+    def get_queries(self):
+        """ return the queries as a (nq, d) array """
+        raise NotImplementedError()
+
+    def get_train(self, maxtrain=None):
+        """ return the queries as a (nt, d) array """
+        raise NotImplementedError()
+
+    def get_database(self):
+        """ return the queries as a (nb, d) array """
+        raise NotImplementedError()
+
+    def database_iterator(self, bs=128, split=(1, 0)):
+        """returns an iterator on database vectors.
+        bs is the number of vectors per batch
+        split = (nsplit, rank) means the dataset is split in nsplit
+        shards and we want shard number rank
+        The default implementation just iterates over the full matrix
+        returned by get_dataset.
+        """
+        xb = self.get_database()
+        nsplit, rank = split
+        i0, i1 = self.nb * rank // nsplit, self.nb * (rank + 1) // nsplit
+        for j0 in range(i0, i1, bs):
+            yield xb[j0: min(j0 + bs, i1)]
+
+    def get_groundtruth(self, k=None):
+        """ return the ground truth for k-nearest neighbor search """
+        raise NotImplementedError()
+
+    def get_groundtruth_range(self, thresh=None):
+        """ return the ground truth for range search """
+        raise NotImplementedError()
+
+    def __str__(self):
+        return (f"dataset in dimension {self.d}, with metric {self.metric}, "
+                f"size: Q {self.nq} B {self.nb} T {self.nt}")
+
+    def check_sizes(self):
+        """ runs the previous and checks the sizes of the matrices """
+        assert self.get_queries().shape == (self.nq, self.d)
+        if self.nt > 0:
+            xt = self.get_train(maxtrain=123)
+            assert xt.shape == (123, self.d), "shape=%s" % (xt.shape, )
+        assert self.get_database().shape == (self.nb, self.d)
+        assert self.get_groundtruth(k=13).shape == (self.nq, 13)
+
+
+class SyntheticDataset(Dataset):
+    """A dataset that is not completely random but still challenging to
+    index
+    """
+
+    def __init__(self, d, nt, nb, nq, metric='L2', seed=1338):
+        Dataset.__init__(self)
+        self.d, self.nt, self.nb, self.nq = d, nt, nb, nq
+        d1 = 10     # intrinsic dimension (more or less)
+        n = nb + nt + nq
+        rs = np.random.RandomState(seed)
+        x = rs.normal(size=(n, d1))
+        x = np.dot(x, rs.rand(d1, d))
+        # now we have a d1-dim ellipsoid in d-dimensional space
+        # higher factor (>4) -> higher frequency -> less linear
+        x = x * (rs.rand(d) * 4 + 0.1)
+        x = np.sin(x)
+        x = x.astype('float32')
+        self.metric = metric
+        self.xt = x[:nt]
+        self.xb = x[nt:nt + nb]
+        self.xq = x[nt + nb:]
+
+    def get_queries(self):
+        return self.xq
+
+    def get_train(self, maxtrain=None):
+        maxtrain = maxtrain if maxtrain is not None else self.nt
+        return self.xt[:maxtrain]
+
+    def get_database(self):
+        return self.xb
+
+    def get_groundtruth(self, k=100):
+        return knn(
+            self.xq, self.xb, k,
+            faiss.METRIC_L2 if self.metric == 'L2' else faiss.METRIC_INNER_PRODUCT
+        )[1]
+
+
+############################################################################
+# The following datasets are a few standard open-source datasets
+# they should be stored in a directory, and we start by guessing where
+# that directory is
+############################################################################
+
+
+for dataset_basedir in (
+        '/datasets01/simsearch/041218/',
+        '/mnt/vol/gfsai-flash3-east/ai-group/datasets/simsearch/'):
+    if os.path.exists(dataset_basedir):
+        break
+else:
+    # users can link their data directory to `./data`
+    dataset_basedir = 'data/'
+
+
+class DatasetSIFT1M(Dataset):
+    """
+    The original dataset is available at: http://corpus-texmex.irisa.fr/
+    (ANN_SIFT1M)
+    """
+
+    def __init__(self):
+        Dataset.__init__(self)
+        self.d, self.nt, self.nb, self.nq = 128, 100000, 1000000, 10000
+        self.basedir = dataset_basedir + 'sift1M/'
+
+    def get_queries(self):
+        return fvecs_read(self.basedir + "sift_query.fvecs")
+
+    def get_train(self, maxtrain=None):
+        maxtrain = maxtrain if maxtrain is not None else self.nt
+        return fvecs_read(self.basedir + "sift_learn.fvecs")[:maxtrain]
+
+    def get_database(self):
+        return fvecs_read(self.basedir + "sift_base.fvecs")
+
+    def get_groundtruth(self, k=None):
+        gt = ivecs_read(self.basedir + "sift_groundtruth.ivecs")
+        if k is not None:
+            assert k <= 100
+            gt = gt[:, :k]
+        return gt
+
+
+def sanitize(x):
+    return np.ascontiguousarray(x, dtype='float32')
+
+
+class DatasetBigANN(Dataset):
+    """
+    The original dataset is available at: http://corpus-texmex.irisa.fr/
+    (ANN_SIFT1B)
+    """
+
+    def __init__(self, nb_M=1000):
+        Dataset.__init__(self)
+        assert nb_M in (1, 2, 5, 10, 20, 50, 100, 200, 500, 1000)
+        self.nb_M = nb_M
+        nb = nb_M * 10**6
+        self.d, self.nt, self.nb, self.nq = 128, 10**8, nb, 10000
+        self.basedir = dataset_basedir + 'bigann/'
+
+    def get_queries(self):
+        return sanitize(bvecs_mmap(self.basedir + 'bigann_query.bvecs')[:])
+
+    def get_train(self, maxtrain=None):
+        maxtrain = maxtrain if maxtrain is not None else self.nt
+        return sanitize(bvecs_mmap(self.basedir + 'bigann_learn.bvecs')[:maxtrain])
+
+    def get_groundtruth(self, k=None):
+        gt = ivecs_read(self.basedir + 'gnd/idx_%dM.ivecs' % self.nb_M)
+        if k is not None:
+            assert k <= 100
+            gt = gt[:, :k]
+        return gt
+
+    def get_database(self):
+        assert self.nb_M < 100, "dataset too large, use iterator"
+        return sanitize(bvecs_mmap(self.basedir + 'bigann_base.bvecs')[:self.nb])
+
+    def database_iterator(self, bs=128, split=(1, 0)):
+        xb = bvecs_mmap(self.basedir + 'bigann_base.bvecs')
+        nsplit, rank = split
+        i0, i1 = self.nb * rank // nsplit, self.nb * (rank + 1) // nsplit
+        for j0 in range(i0, i1, bs):
+            yield sanitize(xb[j0: min(j0 + bs, i1)])
+
+
+class DatasetDeep1B(Dataset):
+    """
+    See
+    https://github.com/facebookresearch/faiss/tree/main/benchs#getting-deep1b
+    on how to get the data
+    """
+
+    def __init__(self, nb=10**9):
+        Dataset.__init__(self)
+        nb_to_name = {
+            10**5: '100k',
+            10**6: '1M',
+            10**7: '10M',
+            10**8: '100M',
+            10**9: '1B'
+        }
+        assert nb in nb_to_name
+        self.d, self.nt, self.nb, self.nq = 96, 358480000, nb, 10000
+        self.basedir = dataset_basedir + 'deep1b/'
+        self.gt_fname = "%sdeep%s_groundtruth.ivecs" % (
+            self.basedir, nb_to_name[self.nb])
+
+    def get_queries(self):
+        return sanitize(fvecs_read(self.basedir + "deep1B_queries.fvecs"))
+
+    def get_train(self, maxtrain=None):
+        maxtrain = maxtrain if maxtrain is not None else self.nt
+        return sanitize(fvecs_mmap(self.basedir + "learn.fvecs")[:maxtrain])
+
+    def get_groundtruth(self, k=None):
+        gt = ivecs_read(self.gt_fname)
+        if k is not None:
+            assert k <= 100
+            gt = gt[:, :k]
+        return gt
+
+    def get_database(self):
+        assert self.nb <= 10**8, "dataset too large, use iterator"
+        return sanitize(fvecs_mmap(self.basedir + "base.fvecs")[:self.nb])
+
+    def database_iterator(self, bs=128, split=(1, 0)):
+        xb = fvecs_mmap(self.basedir + "base.fvecs")
+        nsplit, rank = split
+        i0, i1 = self.nb * rank // nsplit, self.nb * (rank + 1) // nsplit
+        for j0 in range(i0, i1, bs):
+            yield sanitize(xb[j0: min(j0 + bs, i1)])
+
+
+class DatasetGlove(Dataset):
+    """
+    Data from http://ann-benchmarks.com/glove-100-angular.hdf5
+    """
+
+    def __init__(self, loc=None, download=False):
+        import h5py
+        assert not download, "not implemented"
+        if not loc:
+            loc = dataset_basedir + 'glove/glove-100-angular.hdf5'
+        self.glove_h5py = h5py.File(loc, 'r')
+        # IP and L2 are equivalent in this case, but it is traditionally seen as an IP dataset
+        self.metric = 'IP'
+        self.d, self.nt = 100, 0
+        self.nb = self.glove_h5py['train'].shape[0]
+        self.nq = self.glove_h5py['test'].shape[0]
+
+    def get_queries(self):
+        xq = np.array(self.glove_h5py['test'])
+        faiss.normalize_L2(xq)
+        return xq
+
+    def get_database(self):
+        xb = np.array(self.glove_h5py['train'])
+        faiss.normalize_L2(xb)
+        return xb
+
+    def get_groundtruth(self, k=None):
+        gt = self.glove_h5py['neighbors']
+        if k is not None:
+            assert k <= 100
+            gt = gt[:, :k]
+        return gt
+
+
+class DatasetMusic100(Dataset):
+    """
+    get dataset from
+    https://github.com/stanis-morozov/ip-nsw#dataset
+    """
+
+    def __init__(self):
+        Dataset.__init__(self)
+        self.d, self.nt, self.nb, self.nq = 100, 0, 10**6, 10000
+        self.metric = 'IP'
+        self.basedir = dataset_basedir + 'music-100/'
+
+    def get_queries(self):
+        xq = np.fromfile(self.basedir + 'query_music100.bin', dtype='float32')
+        xq = xq.reshape(-1, 100)
+        return xq
+
+    def get_database(self):
+        xb = np.fromfile(self.basedir + 'database_music100.bin', dtype='float32')
+        xb = xb.reshape(-1, 100)
+        return xb
+
+    def get_groundtruth(self, k=None):
+        gt = np.load(self.basedir + 'gt.npy')
+        if k is not None:
+            assert k <= 100
+            gt = gt[:, :k]
+        return gt
diff --git a/build/faiss/python/contrib/evaluation.py b/build/faiss/python/contrib/evaluation.py
new file mode 100644
index 0000000000000000000000000000000000000000..51a4a74991625885b9f87a3244c08dae1671becc
--- /dev/null
+++ b/build/faiss/python/contrib/evaluation.py
@@ -0,0 +1,266 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+import numpy as np
+import unittest
+
+from multiprocessing.dummy import Pool as ThreadPool
+
+###############################################################
+# Simple functions to evaluate knn results
+
+def knn_intersection_measure(I1, I2):
+    """ computes the intersection measure of two result tables
+    """
+    nq, rank = I1.shape
+    assert I2.shape == (nq, rank)
+    ninter = sum(
+        np.intersect1d(I1[i], I2[i]).size
+        for i in range(nq)
+    )
+    return ninter / I1.size
+
+###############################################################
+# Range search results can be compared with Precision-Recall
+
+def filter_range_results(lims, D, I, thresh):
+    """ select a set of results """
+    nq = lims.size - 1
+    mask = D < thresh
+    new_lims = np.zeros_like(lims)
+    for i in range(nq):
+        new_lims[i + 1] = new_lims[i] + mask[lims[i] : lims[i + 1]].sum()
+    return new_lims, D[mask], I[mask]
+
+
+def range_PR(lims_ref, Iref, lims_new, Inew, mode="overall"):
+    """compute the precision and recall of range search results. The
+    function does not take the distances into account. """
+
+    def ref_result_for(i):
+        return Iref[lims_ref[i]:lims_ref[i + 1]]
+
+    def new_result_for(i):
+        return Inew[lims_new[i]:lims_new[i + 1]]
+
+    nq = lims_ref.size - 1
+    assert lims_new.size - 1 == nq
+
+    ninter = np.zeros(nq, dtype="int64")
+
+    def compute_PR_for(q):
+
+        # ground truth results for this query
+        gt_ids = ref_result_for(q)
+
+        # results for this query
+        new_ids = new_result_for(q)
+
+        # there are no set functions in numpy so let's do this
+        inter = np.intersect1d(gt_ids, new_ids)
+
+        ninter[q] = len(inter)
+
+    # run in a thread pool, which helps in spite of the GIL
+    pool = ThreadPool(20)
+    pool.map(compute_PR_for, range(nq))
+
+    return counts_to_PR(
+        lims_ref[1:] - lims_ref[:-1],
+        lims_new[1:] - lims_new[:-1],
+        ninter,
+        mode=mode
+    )
+
+
+def counts_to_PR(ngt, nres, ninter, mode="overall"):
+    """ computes a  precision-recall for a ser of queries.
+    ngt = nb of GT results per query
+    nres = nb of found results per query
+    ninter = nb of correct results per query (smaller than nres of course)
+    """
+
+    if mode == "overall":
+        ngt, nres, ninter = ngt.sum(), nres.sum(), ninter.sum()
+
+        if nres > 0:
+            precision = ninter / nres
+        else:
+            precision = 1.0
+
+        if ngt > 0:
+            recall = ninter / ngt
+        elif nres == 0:
+            recall = 1.0
+        else:
+            recall = 0.0
+
+        return precision, recall
+
+    elif mode == "average":
+        # average precision and recall over queries
+
+        mask = ngt == 0
+        ngt[mask] = 1
+
+        recalls = ninter / ngt
+        recalls[mask] = (nres[mask] == 0).astype(float)
+
+        # avoid division by 0
+        mask = nres == 0
+        assert np.all(ninter[mask] == 0)
+        ninter[mask] = 1
+        nres[mask] = 1
+
+        precisions = ninter / nres
+
+        return precisions.mean(), recalls.mean()
+
+    else:
+        raise AssertionError()
+
+def sort_range_res_2(lims, D, I):
+    """ sort 2 arrays using the first as key """
+    I2 = np.empty_like(I)
+    D2 = np.empty_like(D)
+    nq = len(lims) - 1
+    for i in range(nq):
+        l0, l1 = lims[i], lims[i + 1]
+        ii = I[l0:l1]
+        di = D[l0:l1]
+        o = di.argsort()
+        I2[l0:l1] = ii[o]
+        D2[l0:l1] = di[o]
+    return I2, D2
+
+
+def sort_range_res_1(lims, I):
+    I2 = np.empty_like(I)
+    nq = len(lims) - 1
+    for i in range(nq):
+        l0, l1 = lims[i], lims[i + 1]
+        I2[l0:l1] = I[l0:l1]
+        I2[l0:l1].sort()
+    return I2
+
+
+def range_PR_multiple_thresholds(
+            lims_ref, Iref,
+            lims_new, Dnew, Inew,
+            thresholds,
+            mode="overall", do_sort="ref,new"
+    ):
+    """ compute precision-recall values for range search results
+    for several thresholds on the "new" results.
+    This is to plot PR curves
+    """
+    # ref should be sorted by ids
+    if "ref" in do_sort:
+        Iref = sort_range_res_1(lims_ref, Iref)
+
+    # new should be sorted by distances
+    if "new" in do_sort:
+        Inew, Dnew = sort_range_res_2(lims_new, Dnew, Inew)
+
+    def ref_result_for(i):
+        return Iref[lims_ref[i]:lims_ref[i + 1]]
+
+    def new_result_for(i):
+        l0, l1 = lims_new[i], lims_new[i + 1]
+        return Inew[l0:l1], Dnew[l0:l1]
+
+    nq = lims_ref.size - 1
+    assert lims_new.size - 1 == nq
+
+    nt = len(thresholds)
+    counts = np.zeros((nq, nt, 3), dtype="int64")
+
+    def compute_PR_for(q):
+        gt_ids = ref_result_for(q)
+        res_ids, res_dis = new_result_for(q)
+
+        counts[q, :, 0] = len(gt_ids)
+
+        if res_dis.size == 0:
+            # the rest remains at 0
+            return
+
+        # which offsets we are interested in
+        nres= np.searchsorted(res_dis, thresholds)
+        counts[q, :, 1] = nres
+
+        if gt_ids.size == 0:
+            return
+
+        # find number of TPs at each stage in the result list
+        ii = np.searchsorted(gt_ids, res_ids)
+        ii[ii == len(gt_ids)] = -1
+        n_ok = np.cumsum(gt_ids[ii] == res_ids)
+
+        # focus on threshold points
+        n_ok = np.hstack(([0], n_ok))
+        counts[q, :, 2] = n_ok[nres]
+
+    pool = ThreadPool(20)
+    pool.map(compute_PR_for, range(nq))
+    # print(counts.transpose(2, 1, 0))
+
+    precisions = np.zeros(nt)
+    recalls = np.zeros(nt)
+    for t in range(nt):
+        p, r = counts_to_PR(
+                counts[:, t, 0], counts[:, t, 1], counts[:, t, 2],
+                mode=mode
+        )
+        precisions[t] = p
+        recalls[t] = r
+
+    return precisions, recalls
+
+
+###############################################################
+# Functions that compare search results with a reference result.
+# They are intended for use in tests
+
+def test_ref_knn_with_draws(Dref, Iref, Dnew, Inew):
+    """ test that knn search results are identical, raise if not """
+    np.testing.assert_array_almost_equal(Dref, Dnew, decimal=5)
+    # here we have to be careful because of draws
+    testcase = unittest.TestCase()   # because it makes nice error messages
+    for i in range(len(Iref)):
+        if np.all(Iref[i] == Inew[i]): # easy case
+            continue
+        # we can deduce nothing about the latest line
+        skip_dis = Dref[i, -1]
+        for dis in np.unique(Dref):
+            if dis == skip_dis:
+                continue
+            mask = Dref[i, :] == dis
+            testcase.assertEqual(set(Iref[i, mask]), set(Inew[i, mask]))
+
+
+def test_ref_range_results(lims_ref, Dref, Iref,
+                           lims_new, Dnew, Inew):
+    """ compare range search results wrt. a reference result,
+    throw if it fails """
+    np.testing.assert_array_equal(lims_ref, lims_new)
+    nq = len(lims_ref) - 1
+    for i in range(nq):
+        l0, l1 = lims_ref[i], lims_ref[i + 1]
+        Ii_ref = Iref[l0:l1]
+        Ii_new = Inew[l0:l1]
+        Di_ref = Dref[l0:l1]
+        Di_new = Dnew[l0:l1]
+        if np.all(Ii_ref == Ii_new): # easy
+            pass
+        else:
+            def sort_by_ids(I, D):
+                o = I.argsort()
+                return I[o], D[o]
+            # sort both
+            (Ii_ref, Di_ref) = sort_by_ids(Ii_ref, Di_ref)
+            (Ii_new, Di_new) = sort_by_ids(Ii_new, Di_new)
+            np.testing.assert_array_equal(Ii_ref, Ii_new)
+        np.testing.assert_array_almost_equal(Di_ref, Di_new, decimal=5)
diff --git a/build/faiss/python/contrib/exhaustive_search.py b/build/faiss/python/contrib/exhaustive_search.py
new file mode 100644
index 0000000000000000000000000000000000000000..4f3bd1a89fbf0baab23b4d040df9123340fa7bd1
--- /dev/null
+++ b/build/faiss/python/contrib/exhaustive_search.py
@@ -0,0 +1,308 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+import faiss
+import time
+import numpy as np
+
+import logging
+
+LOG = logging.getLogger(__name__)
+
+
+def knn_ground_truth(xq, db_iterator, k, metric_type=faiss.METRIC_L2):
+    """Computes the exact KNN search results for a dataset that possibly
+    does not fit in RAM but for which we have an iterator that
+    returns it block by block.
+    """
+    LOG.info("knn_ground_truth queries size %s k=%d" % (xq.shape, k))
+    t0 = time.time()
+    nq, d = xq.shape
+    rh = faiss.ResultHeap(nq, k)
+
+    index = faiss.IndexFlat(d, metric_type)
+    if faiss.get_num_gpus():
+        LOG.info('running on %d GPUs' % faiss.get_num_gpus())
+        index = faiss.index_cpu_to_all_gpus(index)
+
+    # compute ground-truth by blocks, and add to heaps
+    i0 = 0
+    for xbi in db_iterator:
+        ni = xbi.shape[0]
+        index.add(xbi)
+        D, I = index.search(xq, k)
+        I += i0
+        rh.add_result(D, I)
+        index.reset()
+        i0 += ni
+        LOG.info("%d db elements, %.3f s" % (i0, time.time() - t0))
+
+    rh.finalize()
+    LOG.info("GT time: %.3f s (%d vectors)" % (time.time() - t0, i0))
+
+    return rh.D, rh.I
+
+# knn function used to be here
+knn = faiss.knn
+
+
+
+
+def range_search_gpu(xq, r2, index_gpu, index_cpu):
+    """GPU does not support range search, so we emulate it with
+    knn search + fallback to CPU index.
+
+    The index_cpu can either be a CPU index or a numpy table that will
+    be used to construct a Flat index if needed.
+    """
+    nq, d = xq.shape
+    LOG.debug("GPU search %d queries" % nq)
+    k = min(index_gpu.ntotal, 1024)
+    D, I = index_gpu.search(xq, k)
+    if index_gpu.metric_type == faiss.METRIC_L2:
+        mask = D[:, k - 1] < r2
+    else:
+        mask = D[:, k - 1] > r2
+    if mask.sum() > 0:
+        LOG.debug("CPU search remain %d" % mask.sum())
+        if isinstance(index_cpu, np.ndarray):
+            # then it in fact an array that we have to make flat
+            xb = index_cpu
+            index_cpu = faiss.IndexFlat(d, index_gpu.metric_type)
+            index_cpu.add(xb)
+        lim_remain, D_remain, I_remain = index_cpu.range_search(xq[mask], r2)
+    LOG.debug("combine")
+    D_res, I_res = [], []
+    nr = 0
+    for i in range(nq):
+        if not mask[i]:
+            if index_gpu.metric_type == faiss.METRIC_L2:
+                nv = (D[i, :] < r2).sum()
+            else:
+                nv = (D[i, :] > r2).sum()
+            D_res.append(D[i, :nv])
+            I_res.append(I[i, :nv])
+        else:
+            l0, l1 = lim_remain[nr], lim_remain[nr + 1]
+            D_res.append(D_remain[l0:l1])
+            I_res.append(I_remain[l0:l1])
+            nr += 1
+    lims = np.cumsum([0] + [len(di) for di in D_res])
+    return lims, np.hstack(D_res), np.hstack(I_res)
+
+
+def range_ground_truth(xq, db_iterator, threshold, metric_type=faiss.METRIC_L2,
+                       shard=False, ngpu=-1):
+    """Computes the range-search search results for a dataset that possibly
+    does not fit in RAM but for which we have an iterator that
+    returns it block by block.
+    """
+    nq, d = xq.shape
+    t0 = time.time()
+    xq = np.ascontiguousarray(xq, dtype='float32')
+
+    index = faiss.IndexFlat(d, metric_type)
+    if ngpu == -1:
+        ngpu = faiss.get_num_gpus()
+    if ngpu:
+        LOG.info('running on %d GPUs' % ngpu)
+        co = faiss.GpuMultipleClonerOptions()
+        co.shard = shard
+        index_gpu = faiss.index_cpu_to_all_gpus(index, co=co, ngpu=ngpu)
+
+    # compute ground-truth by blocks
+    i0 = 0
+    D = [[] for _i in range(nq)]
+    I = [[] for _i in range(nq)]
+    for xbi in db_iterator:
+        ni = xbi.shape[0]
+        if ngpu > 0:
+            index_gpu.add(xbi)
+            lims_i, Di, Ii = range_search_gpu(xq, threshold, index_gpu, xbi)
+            index_gpu.reset()
+        else:
+            index.add(xbi)
+            lims_i, Di, Ii = index.range_search(xq, threshold)
+            index.reset()
+        Ii += i0
+        for j in range(nq):
+            l0, l1 = lims_i[j], lims_i[j + 1]
+            if l1 > l0:
+                D[j].append(Di[l0:l1])
+                I[j].append(Ii[l0:l1])
+        i0 += ni
+        LOG.info("%d db elements, %.3f s" % (i0, time.time() - t0))
+
+    empty_I = np.zeros(0, dtype='int64')
+    empty_D = np.zeros(0, dtype='float32')
+    # import pdb; pdb.set_trace()
+    D = [(np.hstack(i) if i != [] else empty_D) for i in D]
+    I = [(np.hstack(i) if i != [] else empty_I) for i in I]
+    sizes = [len(i) for i in I]
+    assert len(sizes) == nq
+    lims = np.zeros(nq + 1, dtype="uint64")
+    lims[1:] = np.cumsum(sizes)
+    return lims, np.hstack(D), np.hstack(I)
+
+
+def threshold_radius_nres(nres, dis, ids, thresh, keep_max=False):
+    """ select a set of results """
+    if keep_max:
+        mask = dis > thresh
+    else:
+        mask = dis < thresh
+    new_nres = np.zeros_like(nres)
+    o = 0
+    for i, nr in enumerate(nres):
+        nr = int(nr)   # avoid issues with int64 + uint64
+        new_nres[i] = mask[o:o + nr].sum()
+        o += nr
+    return new_nres, dis[mask], ids[mask]
+
+
+def threshold_radius(lims, dis, ids, thresh, keep_max=False):
+    """ restrict range-search results to those below a given radius """
+    if keep_max:
+        mask = dis > thresh
+    else:
+        mask = dis < thresh
+    new_lims = np.zeros_like(lims)
+    n = len(lims) - 1
+    for i in range(n):
+        l0, l1 = lims[i], lims[i + 1]
+        new_lims[i + 1] = new_lims[i] + mask[l0:l1].sum()
+    return new_lims, dis[mask], ids[mask]
+
+
+def apply_maxres(res_batches, target_nres, keep_max=False):
+    """find radius that reduces number of results to target_nres, and
+    applies it in-place to the result batches used in
+    range_search_max_results"""
+    alldis = np.hstack([dis for _, dis, _ in res_batches])
+    assert len(alldis) > target_nres
+    if keep_max:
+        alldis.partition(len(alldis) - target_nres - 1)
+        radius = alldis[-1 - target_nres]
+    else:
+        alldis.partition(target_nres)
+        radius = alldis[target_nres]
+
+    if alldis.dtype == 'float32':
+        radius = float(radius)
+    else:
+        radius = int(radius)
+    LOG.debug('   setting radius to %s' % radius)
+    totres = 0
+    for i, (nres, dis, ids) in enumerate(res_batches):
+        nres, dis, ids = threshold_radius_nres(
+            nres, dis, ids, radius, keep_max=keep_max)
+        totres += len(dis)
+        res_batches[i] = nres, dis, ids
+    LOG.debug('   updated previous results, new nb results %d' % totres)
+    return radius, totres
+
+
+def range_search_max_results(index, query_iterator, radius,
+                             max_results=None, min_results=None,
+                             shard=False, ngpu=0, clip_to_min=False):
+    """Performs a range search with many queries (given by an iterator)
+    and adjusts the threshold on-the-fly so that the total results
+    table does not grow larger than max_results.
+
+    If ngpu != 0, the function moves the index to this many GPUs to
+    speed up search.
+    """
+    # TODO: all result manipulations are in python, should move to C++ if perf
+    # critical
+
+    if min_results is None:
+        assert max_results is not None
+        min_results = int(0.8 * max_results)
+
+    if max_results is None:
+        assert min_results is not None
+        max_results = int(min_results * 1.5)
+
+    if ngpu == -1:
+        ngpu = faiss.get_num_gpus()
+
+    if ngpu:
+        LOG.info('running on %d GPUs' % ngpu)
+        co = faiss.GpuMultipleClonerOptions()
+        co.shard = shard
+        index_gpu = faiss.index_cpu_to_all_gpus(index, co=co, ngpu=ngpu)
+
+    t_start = time.time()
+    t_search = t_post_process = 0
+    qtot = totres = raw_totres = 0
+    res_batches = []
+
+    for xqi in query_iterator:
+        t0 = time.time()
+        if ngpu > 0:
+            lims_i, Di, Ii = range_search_gpu(xqi, radius, index_gpu, index)
+        else:
+            lims_i, Di, Ii = index.range_search(xqi, radius)
+
+        nres_i = lims_i[1:] - lims_i[:-1]
+        raw_totres += len(Di)
+        qtot += len(xqi)
+
+        t1 = time.time()
+        if xqi.dtype != np.float32:
+            # for binary indexes
+            # weird Faiss quirk that returns floats for Hamming distances
+            Di = Di.astype('int16')
+
+        totres += len(Di)
+        res_batches.append((nres_i, Di, Ii))
+
+        if max_results is not None and totres > max_results:
+            LOG.info('too many results %d > %d, scaling back radius' %
+                     (totres, max_results))
+            radius, totres = apply_maxres(
+                res_batches, min_results,
+                keep_max=index.metric_type == faiss.METRIC_INNER_PRODUCT
+            )
+        t2 = time.time()
+        t_search += t1 - t0
+        t_post_process += t2 - t1
+        LOG.debug('   [%.3f s] %d queries done, %d results' % (
+            time.time() - t_start, qtot, totres))
+
+    LOG.info(
+        'search done in %.3f s + %.3f s, total %d results, end threshold %g' % (
+            t_search, t_post_process, totres, radius)
+    )
+
+    if clip_to_min and totres > min_results:
+        radius, totres = apply_maxres(
+            res_batches, min_results,
+            keep_max=index.metric_type == faiss.METRIC_INNER_PRODUCT
+        )
+
+    nres = np.hstack([nres_i for nres_i, dis_i, ids_i in res_batches])
+    dis = np.hstack([dis_i for nres_i, dis_i, ids_i in res_batches])
+    ids = np.hstack([ids_i for nres_i, dis_i, ids_i in res_batches])
+
+    lims = np.zeros(len(nres) + 1, dtype='uint64')
+    lims[1:] = np.cumsum(nres)
+
+    return radius, lims, dis, ids
+
+
+def exponential_query_iterator(xq, start_bs=32, max_bs=20000):
+    """ produces batches of progressively increasing sizes. This is useful to
+    adjust the search radius progressively without overflowing with
+    intermediate results """
+    nq = len(xq)
+    bs = start_bs
+    i = 0
+    while i < nq:
+        xqi = xq[i:i + bs]
+        yield xqi
+        if bs < max_bs:
+            bs *= 2
+        i += len(xqi)
diff --git a/build/faiss/python/contrib/factory_tools.py b/build/faiss/python/contrib/factory_tools.py
new file mode 100644
index 0000000000000000000000000000000000000000..9623ad55f4f8c4343ab8dc4c5d17a6938c760b42
--- /dev/null
+++ b/build/faiss/python/contrib/factory_tools.py
@@ -0,0 +1,100 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+import faiss
+import re
+
+
+def get_code_size(d, indexkey):
+    """ size of one vector in an index in dimension d
+    constructed with factory string indexkey"""
+
+    if indexkey == "Flat":
+        return d * 4
+
+    if indexkey.endswith(",RFlat"):
+        return d * 4 + get_code_size(d, indexkey[:-len(",RFlat")])
+
+    mo = re.match("IVF\\d+(_HNSW32)?,(.*)$", indexkey)
+    if mo:
+        return get_code_size(d, mo.group(2))
+
+    mo = re.match("IVF\\d+\\(.*\\)?,(.*)$", indexkey)
+    if mo:
+        return get_code_size(d, mo.group(1))
+
+    mo = re.match("IMI\\d+x2,(.*)$", indexkey)
+    if mo:
+        return get_code_size(d, mo.group(1))
+
+    mo = re.match("(.*),Refine\\((.*)\\)$", indexkey)
+    if mo:
+        return get_code_size(d, mo.group(1)) + get_code_size(d, mo.group(2))
+
+    mo = re.match('PQ(\\d+)x(\\d+)(fs|fsr)?$', indexkey)
+    if mo:
+        return (int(mo.group(1)) * int(mo.group(2)) + 7) // 8
+
+    mo = re.match('PQ(\\d+)\\+(\\d+)$', indexkey)
+    if mo:
+        return (int(mo.group(1)) + int(mo.group(2)))
+
+    mo = re.match('PQ(\\d+)$', indexkey)
+    if mo:
+        return int(mo.group(1))
+
+    if indexkey == "HNSW32" or indexkey == "HNSW32,Flat":
+        return d * 4 + 64 * 4 # roughly
+
+    if indexkey == 'SQ8':
+        return d
+    elif indexkey == 'SQ4':
+        return (d + 1) // 2
+    elif indexkey == 'SQ6':
+        return (d * 6 + 7) // 8
+    elif indexkey == 'SQfp16':
+        return d * 2
+
+    mo = re.match('PCAR?(\\d+),(.*)$', indexkey)
+    if mo:
+        return get_code_size(int(mo.group(1)), mo.group(2))
+    mo = re.match('OPQ\\d+_(\\d+),(.*)$', indexkey)
+    if mo:
+        return get_code_size(int(mo.group(1)), mo.group(2))
+    mo = re.match('OPQ\\d+,(.*)$', indexkey)
+    if mo:
+        return get_code_size(d, mo.group(1))
+    mo = re.match('RR(\\d+),(.*)$', indexkey)
+    if mo:
+        return get_code_size(int(mo.group(1)), mo.group(2))
+    raise RuntimeError("cannot parse " + indexkey)
+
+
+
+def reverse_index_factory(index):
+    """
+    attempts to get the factory string the index was built with
+    """
+    index = faiss.downcast_index(index)
+    if isinstance(index, faiss.IndexFlat):
+        return "Flat"
+    if isinstance(index, faiss.IndexIVF):
+        quantizer = faiss.downcast_index(index.quantizer)
+
+        if isinstance(quantizer, faiss.IndexFlat):
+            prefix = "IVF%d" % index.nlist
+        elif isinstance(quantizer, faiss.MultiIndexQuantizer):
+            prefix = "IMI%dx%d" % (quantizer.pq.M, quantizer.pq.nbit)
+        elif isinstance(quantizer, faiss.IndexHNSW):
+            prefix = "IVF%d_HNSW%d" % (index.nlist, quantizer.hnsw.M)
+        else:
+            prefix = "IVF%d(%s)" % (index.nlist, reverse_index_factory(quantizer))
+
+        if isinstance(index, faiss.IndexIVFFlat):
+            return prefix + ",Flat"
+        if isinstance(index, faiss.IndexIVFScalarQuantizer):
+            return prefix + ",SQ8"
+
+    raise NotImplementedError()
diff --git a/build/faiss/python/contrib/inspect_tools.py b/build/faiss/python/contrib/inspect_tools.py
new file mode 100644
index 0000000000000000000000000000000000000000..1182156a82154367e3da83f526a7e8b5212c8057
--- /dev/null
+++ b/build/faiss/python/contrib/inspect_tools.py
@@ -0,0 +1,84 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+import numpy as np
+import faiss
+
+
+def get_invlist(invlists, l):
+    """ returns the inverted lists content as a pair of (list_ids, list_codes).
+    The codes are reshaped to a proper size
+    """
+    invlists = faiss.downcast_InvertedLists(invlists)
+    ls = invlists.list_size(l)
+    list_ids = np.zeros(ls, dtype='int64')
+    ids = codes = None
+    try:
+        ids = invlists.get_ids(l)
+        if ls > 0:
+            faiss.memcpy(faiss.swig_ptr(list_ids), ids, list_ids.nbytes)
+        codes = invlists.get_codes(l)
+        if invlists.code_size != faiss.InvertedLists.INVALID_CODE_SIZE:
+            list_codes = np.zeros((ls, invlists.code_size), dtype='uint8')
+        else:
+            # it's a BlockInvertedLists
+            npb = invlists.n_per_block
+            bs = invlists.block_size
+            ls_round = (ls + npb - 1) // npb
+            list_codes = np.zeros((ls_round, bs // npb, npb), dtype='uint8')
+        if ls > 0:
+            faiss.memcpy(faiss.swig_ptr(list_codes), codes, list_codes.nbytes)
+    finally:
+        if ids is not None:
+            invlists.release_ids(l, ids)
+        if codes is not None:
+            invlists.release_codes(l, codes)
+    return list_ids, list_codes
+
+
+def get_invlist_sizes(invlists):
+    """ return the array of sizes of the inverted lists """
+    return np.array([
+        invlists.list_size(i)
+        for i in range(invlists.nlist)
+    ], dtype='int64')
+
+
+def print_object_fields(obj):
+    """ list values all fields of an object known to SWIG """
+
+    for name in obj.__class__.__swig_getmethods__:
+        print(f"{name} = {getattr(obj, name)}")
+
+
+def get_pq_centroids(pq):
+    """ return the PQ centroids as an array """
+    cen = faiss.vector_to_array(pq.centroids)
+    return cen.reshape(pq.M, pq.ksub, pq.dsub)
+
+
+def get_LinearTransform_matrix(pca):
+    """ extract matrix + bias from the PCA object
+    works for any linear transform (OPQ, random rotation, etc.)
+    """
+    b = faiss.vector_to_array(pca.b)
+    A = faiss.vector_to_array(pca.A).reshape(pca.d_out, pca.d_in)
+    return A, b
+
+
+def get_additive_quantizer_codebooks(aq):
+    """ return to codebooks of an additive quantizer """
+    codebooks = faiss.vector_to_array(aq.codebooks).reshape(-1, aq.d)
+    co = faiss.vector_to_array(aq.codebook_offsets)
+    return [
+        codebooks[co[i]:co[i + 1]]
+        for i in range(aq.M)
+    ]
+
+
+def get_flat_data(index):
+    """ copy and return the data matrix in an IndexFlat """
+    xb = faiss.vector_to_array(index.codes).view("float32")
+    return xb.reshape(index.ntotal, index.d)
diff --git a/build/faiss/python/contrib/ivf_tools.py b/build/faiss/python/contrib/ivf_tools.py
new file mode 100644
index 0000000000000000000000000000000000000000..8d1e2be6f1dbebab72655e5fd9a0b12d3130d8d2
--- /dev/null
+++ b/build/faiss/python/contrib/ivf_tools.py
@@ -0,0 +1,91 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+import numpy as np
+import faiss
+
+def add_preassigned(index_ivf, x, a, ids=None):
+    """
+    Add elements to an IVF index, where the assignment is already computed
+    """
+    n, d = x.shape
+    assert a.shape == (n, )
+    if isinstance(index_ivf, faiss.IndexBinaryIVF):
+        d *= 8
+    assert d == index_ivf.d
+    if ids is not None:
+        assert ids.shape == (n, )
+        ids = faiss.swig_ptr(ids)
+    index_ivf.add_core(
+        n, faiss.swig_ptr(x), ids, faiss.swig_ptr(a)
+    )
+
+
+def search_preassigned(index_ivf, xq, k, list_nos, coarse_dis=None):
+    """
+    Perform a search in the IVF index, with predefined lists to search into
+    """
+    n, d = xq.shape
+    if isinstance(index_ivf, faiss.IndexBinaryIVF):
+        d *= 8
+        dis_type = "int32"
+    else:
+        dis_type = "float32"
+
+    assert d == index_ivf.d
+    assert list_nos.shape == (n, index_ivf.nprobe)
+
+    # the coarse distances are used in IVFPQ with L2 distance and by_residual=True
+    # otherwise we provide dummy coarse_dis
+    if coarse_dis is None:
+        coarse_dis = np.zeros((n, index_ivf.nprobe), dtype=dis_type)
+    else:
+        assert coarse_dis.shape == (n, index_ivf.nprobe)
+
+    D = np.empty((n, k), dtype=dis_type)
+    I = np.empty((n, k), dtype='int64')
+
+    sp = faiss.swig_ptr
+    index_ivf.search_preassigned(
+        n, sp(xq), k,
+        sp(list_nos), sp(coarse_dis), sp(D), sp(I), False)
+    return D, I
+
+
+def range_search_preassigned(index_ivf, x, radius, list_nos, coarse_dis=None):
+    """
+    Perform a range search in the IVF index, with predefined lists to search into
+    """
+    n, d = x.shape
+    if isinstance(index_ivf, faiss.IndexBinaryIVF):
+        d *= 8
+        dis_type = "int32"
+    else:
+        dis_type = "float32"
+
+    # the coarse distances are used in IVFPQ with L2 distance and by_residual=True
+    # otherwise we provide dummy coarse_dis
+    if coarse_dis is None:
+        coarse_dis = np.empty((n, index_ivf.nprobe), dtype=dis_type)
+    else:
+        assert coarse_dis.shape == (n, index_ivf.nprobe)
+
+    assert d == index_ivf.d
+    assert list_nos.shape == (n, index_ivf.nprobe)
+
+    res = faiss.RangeSearchResult(n)
+    sp = faiss.swig_ptr
+
+    index_ivf.range_search_preassigned(
+        n, sp(x), radius,
+        sp(list_nos), sp(coarse_dis),
+        res
+    )
+    # get pointers and copy them
+    lims = faiss.rev_swig_ptr(res.lims, n + 1).copy()
+    num_results = int(lims[-1])
+    dist = faiss.rev_swig_ptr(res.distances, num_results).copy()
+    indices = faiss.rev_swig_ptr(res.labels, num_results).copy()
+    return lims, dist, indices
diff --git a/build/faiss/python/contrib/ondisk.py b/build/faiss/python/contrib/ondisk.py
new file mode 100644
index 0000000000000000000000000000000000000000..37288a16d6dbdaee9b3f1cc8b36aa691f90cd93a
--- /dev/null
+++ b/build/faiss/python/contrib/ondisk.py
@@ -0,0 +1,55 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+from typing import List
+import faiss
+import logging
+
+LOG = logging.getLogger(__name__)
+
+def merge_ondisk(trained_index: faiss.Index,
+                 shard_fnames: List[str],
+                 ivfdata_fname: str) -> None:
+    """ Add the contents of the indexes stored in shard_fnames into the index
+    trained_index. The on-disk data is stored in ivfdata_fname """
+    # merge the images into an on-disk index
+    # first load the inverted lists
+    ivfs = []
+    for fname in shard_fnames:
+        # the IO_FLAG_MMAP is to avoid actually loading the data thus
+        # the total size of the inverted lists can exceed the
+        # available RAM
+        LOG.info("read " + fname)
+        index = faiss.read_index(fname, faiss.IO_FLAG_MMAP)
+        index_ivf = faiss.extract_index_ivf(index)
+        ivfs.append(index_ivf.invlists)
+
+        # avoid that the invlists get deallocated with the index
+        index_ivf.own_invlists = False
+
+    # construct the output index
+    index = trained_index
+    index_ivf = faiss.extract_index_ivf(index)
+
+    assert index.ntotal == 0, "works only on empty index"
+
+    # prepare the output inverted lists. They will be written
+    # to merged_index.ivfdata
+    invlists = faiss.OnDiskInvertedLists(
+        index_ivf.nlist, index_ivf.code_size,
+        ivfdata_fname)
+
+    # merge all the inverted lists
+    ivf_vector = faiss.InvertedListsPtrVector()
+    for ivf in ivfs:
+        ivf_vector.push_back(ivf)
+
+    LOG.info("merge %d inverted lists " % ivf_vector.size())
+    ntotal = invlists.merge_from(ivf_vector.data(), ivf_vector.size())
+
+    # now replace the inverted lists in the output index
+    index.ntotal = index_ivf.ntotal = ntotal
+    index_ivf.replace_invlists(invlists, True)
+    invlists.this.disown()
diff --git a/build/faiss/python/contrib/rpc.py b/build/faiss/python/contrib/rpc.py
new file mode 100755
index 0000000000000000000000000000000000000000..f9d7ee82801e9e843e999c65019477b589bf3b96
--- /dev/null
+++ b/build/faiss/python/contrib/rpc.py
@@ -0,0 +1,251 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+"""
+Simplistic RPC implementation.
+Exposes all functions of a Server object.
+
+Uses pickle for serialization and the socket interface.
+"""
+
+import os,pdb,pickle,time,errno,sys,_thread,traceback,socket,threading,gc
+
+import logging
+
+LOG = logging.getLogger(__name__)
+
+# default
+PORT=12032
+
+
+#########################################################################
+# simple I/O functions
+
+
+def inline_send_handle(f, conn):
+    st = os.fstat(f.fileno())
+    size = st.st_size
+    pickle.dump(size, conn)
+    conn.write(f.read(size))
+
+def inline_send_string(s, conn):
+    size = len(s)
+    pickle.dump(size, conn)
+    conn.write(s)
+
+
+class FileSock:
+    " wraps a socket so that it is usable by pickle/cPickle "
+
+    def __init__(self,sock):
+        self.sock = sock
+        self.nr=0
+
+    def write(self, buf):
+        # print("sending %d bytes"%len(buf))
+        #self.sock.sendall(buf)
+        # print("...done")
+        bs = 512 * 1024
+        ns = 0
+        while ns < len(buf):
+            sent = self.sock.send(buf[ns:ns + bs])
+            ns += sent
+
+    def read(self,bs=512*1024):
+        #if self.nr==10000: pdb.set_trace()
+        self.nr+=1
+        # print("read bs=%d"%bs)
+        b = []
+        nb = 0
+        while len(b)<bs:
+            # print('   loop')
+            rb = self.sock.recv(bs - nb)
+            if not rb: break
+            b.append(rb)
+            nb += len(rb)
+        return b''.join(b)
+
+    def readline(self):
+        # print("readline!")
+        """may be optimized..."""
+        s=bytes()
+        while True:
+            c=self.read(1)
+            s+=c
+        if len(c)==0 or chr(c[0])=='\n':
+            return s
+
+class ClientExit(Exception):
+    pass
+
+class ServerException(Exception):
+    pass
+
+
+class Server:
+    """
+    server protocol. Methods from classes that subclass Server can be called
+    transparently from a client
+    """
+
+    def __init__(self, s, logf=sys.stderr, log_prefix=''):
+        self.logf = logf
+        self.log_prefix = log_prefix
+
+        # connection
+
+        self.conn = s
+        self.fs = FileSock(s)
+
+
+    def log(self, s):
+        self.logf.write("Sever log %s: %s\n" % (self.log_prefix, s))
+
+    def one_function(self):
+        """
+        Executes a single function with associated I/O.
+        Protocol:
+        - the arguments and results are serialized with the pickle protocol
+        - client sends : (fname,args)
+            fname = method name to call
+            args = tuple of arguments
+        - server sends result: (rid,st,ret)
+            rid = request id
+            st = None, or exception if there was during execution
+            ret = return value or None if st!=None
+        """
+
+        try:
+            (fname,args)=pickle.load(self.fs)
+        except EOFError:
+            raise ClientExit("read args")
+        self.log("executing method %s"%(fname))
+        st = None
+        ret = None
+        try:
+            f=getattr(self,fname)
+        except AttributeError:
+            st = AttributeError("unknown method "+fname)
+            self.log("unknown method ")
+
+        try:
+            ret = f(*args)
+        except Exception as e:
+            # due to a bug (in mod_python?), ServerException cannot be
+            # unpickled, so send the string and make the exception on the client side
+
+            #st=ServerException(
+            #  "".join(traceback.format_tb(sys.exc_info()[2]))+
+            #  str(e))
+            st="".join(traceback.format_tb(sys.exc_info()[2]))+str(e)
+            self.log("exception in method")
+            traceback.print_exc(50,self.logf)
+            self.logf.flush()
+
+        LOG.info("return")
+        try:
+            pickle.dump((st ,ret), self.fs, protocol=4)
+        except EOFError:
+            raise ClientExit("function return")
+
+    def exec_loop(self):
+        """ main execution loop. Loops and handles exit states"""
+
+        self.log("in exec_loop")
+        try:
+            while True:
+                self.one_function()
+        except ClientExit as e:
+            self.log("ClientExit %s"%e)
+        except socket.error as e:
+            self.log("socket error %s"%e)
+            traceback.print_exc(50,self.logf)
+        except EOFError:
+            self.log("EOF during communication")
+            traceback.print_exc(50,self.logf)
+        except BaseException:
+            # unexpected
+            traceback.print_exc(50,sys.stderr)
+            sys.exit(1)
+
+        LOG.info("exit sever")
+
+    def exec_loop_cleanup(self):
+        pass
+
+    ###################################################################
+    # spying stuff
+
+    def get_ps_stats(self):
+        ret=''
+        f=os.popen("echo ============ `hostname` uptime:; uptime;"+
+                   "echo ============ self:; "+
+                   "ps -p %d -o pid,vsize,rss,%%cpu,nlwp,psr; "%os.getpid()+
+                   "echo ============ run queue:;"+
+                   "ps ar -o user,pid,%cpu,%mem,ni,nlwp,psr,vsz,rss,cputime,command")
+        for l in f:
+            ret+=l
+        return ret
+
+class Client:
+    """
+    Methods of the server object can be called transparently. Exceptions are
+    re-raised.
+    """
+    def __init__(self, HOST, port=PORT, v6=False):
+        socktype = socket.AF_INET6 if v6 else socket.AF_INET
+
+        sock = socket.socket(socktype, socket.SOCK_STREAM)
+        LOG.info("connecting", HOST, port, socktype)
+        sock.connect((HOST, port))
+        self.sock = sock
+        self.fs = FileSock(sock)
+
+    def generic_fun(self, fname, args):
+        # int "gen fun",fname
+        pickle.dump((fname, args), self.fs, protocol=4)
+        return self.get_result()
+
+    def get_result(self):
+        (st, ret) = pickle.load(self.fs)
+        if st!=None:
+            raise ServerException(st)
+        else:
+            return ret
+
+    def __getattr__(self,name):
+        return lambda *x: self.generic_fun(name,x)
+
+
+def run_server(new_handler, port=PORT, report_to_file=None, v6=False):
+
+    HOST = ''                 # Symbolic name meaning the local host
+    socktype = socket.AF_INET6 if v6 else socket.AF_INET
+    s = socket.socket(socktype, socket.SOCK_STREAM)
+    s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+
+    LOG.info("bind %s:%d" % (HOST, port))
+    s.bind((HOST, port))
+    s.listen(5)
+
+    LOG.info("accepting connections")
+    if report_to_file is not None:
+        LOG.info('storing host+port in', report_to_file)
+        open(report_to_file, 'w').write('%s:%d ' % (socket.gethostname(), port))
+
+    while True:
+        try:
+            conn, addr = s.accept()
+        except socket.error as e:
+            if e[1]=='Interrupted system call': continue
+            raise
+
+        LOG.info('Connected by', addr, end=' ')
+
+        ibs = new_handler(conn)
+
+        tid = _thread.start_new_thread(ibs.exec_loop,())
+
+        LOG.info("tid",tid)
diff --git a/build/faiss/python/contrib/torch_utils.py b/build/faiss/python/contrib/torch_utils.py
new file mode 100644
index 0000000000000000000000000000000000000000..9799c076be74a28a1d85bfa0e5b552f0c95310f7
--- /dev/null
+++ b/build/faiss/python/contrib/torch_utils.py
@@ -0,0 +1,652 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+"""
+
+This is a set of function wrappers that override the default numpy versions.
+
+Interoperability functions for pytorch and Faiss: Importing this will allow
+pytorch Tensors (CPU or GPU) to be used as arguments to Faiss indexes and
+other functions. Torch GPU tensors can only be used with Faiss GPU indexes.
+If this is imported with a package that supports Faiss GPU, the necessary
+stream synchronization with the current pytorch stream will be automatically
+performed.
+
+Numpy ndarrays can continue to be used in the Faiss python interface after
+importing this file. All arguments must be uniformly either numpy ndarrays
+or Torch tensors; no mixing is allowed.
+
+"""
+
+
+import faiss
+import torch
+import contextlib
+import inspect
+import sys
+import numpy as np
+
+def swig_ptr_from_UInt8Tensor(x):
+    """ gets a Faiss SWIG pointer from a pytorch tensor (on CPU or GPU) """
+    assert x.is_contiguous()
+    assert x.dtype == torch.uint8
+    return faiss.cast_integer_to_uint8_ptr(
+        x.storage().data_ptr() + x.storage_offset())
+
+def swig_ptr_from_HalfTensor(x):
+    """ gets a Faiss SWIG pointer from a pytorch tensor (on CPU or GPU) """
+    assert x.is_contiguous()
+    assert x.dtype == torch.float16
+    # no canonical half type in C/C++
+    return faiss.cast_integer_to_void_ptr(
+        x.storage().data_ptr() + x.storage_offset() * 4)
+
+def swig_ptr_from_FloatTensor(x):
+    """ gets a Faiss SWIG pointer from a pytorch tensor (on CPU or GPU) """
+    assert x.is_contiguous()
+    assert x.dtype == torch.float32
+    return faiss.cast_integer_to_float_ptr(
+        x.storage().data_ptr() + x.storage_offset() * 4)
+
+def swig_ptr_from_IntTensor(x):
+    """ gets a Faiss SWIG pointer from a pytorch tensor (on CPU or GPU) """
+    assert x.is_contiguous()
+    assert x.dtype == torch.int32, 'dtype=%s' % x.dtype
+    return faiss.cast_integer_to_int_ptr(
+        x.storage().data_ptr() + x.storage_offset() * 8)
+
+def swig_ptr_from_IndicesTensor(x):
+    """ gets a Faiss SWIG pointer from a pytorch tensor (on CPU or GPU) """
+    assert x.is_contiguous()
+    assert x.dtype == torch.int64, 'dtype=%s' % x.dtype
+    return faiss.cast_integer_to_idx_t_ptr(
+        x.storage().data_ptr() + x.storage_offset() * 8)
+
+@contextlib.contextmanager
+def using_stream(res, pytorch_stream=None):
+    """ Creates a scoping object to make Faiss GPU use the same stream
+        as pytorch, based on torch.cuda.current_stream().
+        Or, a specific pytorch stream can be passed in as a second
+        argument, in which case we will use that stream.
+    """
+
+    if pytorch_stream is None:
+        pytorch_stream = torch.cuda.current_stream()
+
+    # This is the cudaStream_t that we wish to use
+    cuda_stream_s = faiss.cast_integer_to_cudastream_t(pytorch_stream.cuda_stream)
+
+    # So we can revert GpuResources stream state upon exit
+    prior_dev = torch.cuda.current_device()
+    prior_stream = res.getDefaultStream(torch.cuda.current_device())
+
+    res.setDefaultStream(torch.cuda.current_device(), cuda_stream_s)
+
+    # Do the user work
+    try:
+        yield
+    finally:
+        res.setDefaultStream(prior_dev, prior_stream)
+
+def torch_replace_method(the_class, name, replacement,
+                         ignore_missing=False, ignore_no_base=False):
+    try:
+        orig_method = getattr(the_class, name)
+    except AttributeError:
+        if ignore_missing:
+            return
+        raise
+    if orig_method.__name__ == 'torch_replacement_' + name:
+        # replacement was done in parent class
+        return
+
+    # We should already have the numpy replacement methods patched
+    assert ignore_no_base or (orig_method.__name__ == 'replacement_' + name)
+    setattr(the_class, name + '_numpy', orig_method)
+    setattr(the_class, name, replacement)
+
+def handle_torch_Index(the_class):
+    def torch_replacement_add(self, x):
+        if type(x) is np.ndarray:
+            # forward to faiss __init__.py base method
+            return self.add_numpy(x)
+
+        assert type(x) is torch.Tensor
+        n, d = x.shape
+        assert d == self.d
+        x_ptr = swig_ptr_from_FloatTensor(x)
+
+        if x.is_cuda:
+            assert hasattr(self, 'getDevice'), 'GPU tensor on CPU index not allowed'
+
+            # On the GPU, use proper stream ordering
+            with using_stream(self.getResources()):
+                self.add_c(n, x_ptr)
+        else:
+            # CPU torch
+            self.add_c(n, x_ptr)
+
+    def torch_replacement_add_with_ids(self, x, ids):
+        if type(x) is np.ndarray:
+            # forward to faiss __init__.py base method
+            return self.add_with_ids_numpy(x, ids)
+
+        assert type(x) is torch.Tensor
+        n, d = x.shape
+        assert d == self.d
+        x_ptr = swig_ptr_from_FloatTensor(x)
+
+        assert type(ids) is torch.Tensor
+        assert ids.shape == (n, ), 'not same number of vectors as ids'
+        ids_ptr = swig_ptr_from_IndicesTensor(ids)
+
+        if x.is_cuda:
+            assert hasattr(self, 'getDevice'), 'GPU tensor on CPU index not allowed'
+
+            # On the GPU, use proper stream ordering
+            with using_stream(self.getResources()):
+                self.add_with_ids_c(n, x_ptr, ids_ptr)
+        else:
+            # CPU torch
+            self.add_with_ids_c(n, x_ptr, ids_ptr)
+
+    def torch_replacement_assign(self, x, k, labels=None):
+        if type(x) is np.ndarray:
+            # forward to faiss __init__.py base method
+            return self.assign_numpy(x, k, labels)
+
+        assert type(x) is torch.Tensor
+        n, d = x.shape
+        assert d == self.d
+        x_ptr = swig_ptr_from_FloatTensor(x)
+
+        if labels is None:
+            labels = torch.empty(n, k, device=x.device, dtype=torch.int64)
+        else:
+            assert type(labels) is torch.Tensor
+            assert labels.shape == (n, k)
+        L_ptr = swig_ptr_from_IndicesTensor(labels)
+
+        if x.is_cuda:
+            assert hasattr(self, 'getDevice'), 'GPU tensor on CPU index not allowed'
+
+            # On the GPU, use proper stream ordering
+            with using_stream(self.getResources()):
+                self.assign_c(n, x_ptr, L_ptr, k)
+        else:
+            # CPU torch
+            self.assign_c(n, x_ptr, L_ptr, k)
+
+        return labels
+
+    def torch_replacement_train(self, x):
+        if type(x) is np.ndarray:
+            # forward to faiss __init__.py base method
+            return self.train_numpy(x)
+
+        assert type(x) is torch.Tensor
+        n, d = x.shape
+        assert d == self.d
+        x_ptr = swig_ptr_from_FloatTensor(x)
+
+        if x.is_cuda:
+            assert hasattr(self, 'getDevice'), 'GPU tensor on CPU index not allowed'
+
+            # On the GPU, use proper stream ordering
+            with using_stream(self.getResources()):
+                self.train_c(n, x_ptr)
+        else:
+            # CPU torch
+            self.train_c(n, x_ptr)
+
+    def torch_replacement_search(self, x, k, D=None, I=None):
+        if type(x) is np.ndarray:
+            # forward to faiss __init__.py base method
+            return self.search_numpy(x, k, D, I)
+
+        assert type(x) is torch.Tensor
+        n, d = x.shape
+        assert d == self.d
+        x_ptr = swig_ptr_from_FloatTensor(x)
+
+        if D is None:
+            D = torch.empty(n, k, device=x.device, dtype=torch.float32)
+        else:
+            assert type(D) is torch.Tensor
+            assert D.shape == (n, k)
+        D_ptr = swig_ptr_from_FloatTensor(D)
+
+        if I is None:
+            I = torch.empty(n, k, device=x.device, dtype=torch.int64)
+        else:
+            assert type(I) is torch.Tensor
+            assert I.shape == (n, k)
+        I_ptr = swig_ptr_from_IndicesTensor(I)
+
+        if x.is_cuda:
+            assert hasattr(self, 'getDevice'), 'GPU tensor on CPU index not allowed'
+
+            # On the GPU, use proper stream ordering
+            with using_stream(self.getResources()):
+                self.search_c(n, x_ptr, k, D_ptr, I_ptr)
+        else:
+            # CPU torch
+            self.search_c(n, x_ptr, k, D_ptr, I_ptr)
+
+        return D, I
+
+    def torch_replacement_search_and_reconstruct(self, x, k, D=None, I=None, R=None):
+        if type(x) is np.ndarray:
+            # Forward to faiss __init__.py base method
+            return self.search_and_reconstruct_numpy(x, k, D, I, R)
+
+        assert type(x) is torch.Tensor
+        n, d = x.shape
+        assert d == self.d
+        x_ptr = swig_ptr_from_FloatTensor(x)
+
+        if D is None:
+            D = torch.empty(n, k, device=x.device, dtype=torch.float32)
+        else:
+            assert type(D) is torch.Tensor
+            assert D.shape == (n, k)
+        D_ptr = swig_ptr_from_FloatTensor(D)
+
+        if I is None:
+            I = torch.empty(n, k, device=x.device, dtype=torch.int64)
+        else:
+            assert type(I) is torch.Tensor
+            assert I.shape == (n, k)
+        I_ptr = swig_ptr_from_IndicesTensor(I)
+
+        if R is None:
+            R = torch.empty(n, k, d, device=x.device, dtype=torch.float32)
+        else:
+            assert type(R) is torch.Tensor
+            assert R.shape == (n, k, d)
+        R_ptr = swig_ptr_from_FloatTensor(R)
+
+        if x.is_cuda:
+            assert hasattr(self, 'getDevice'), 'GPU tensor on CPU index not allowed'
+
+            # On the GPU, use proper stream ordering
+            with using_stream(self.getResources()):
+                self.search_and_reconstruct_c(n, x_ptr, k, D_ptr, I_ptr, R_ptr)
+        else:
+            # CPU torch
+            self.search_and_reconstruct_c(n, x_ptr, k, D_ptr, I_ptr, R_ptr)
+
+        return D, I, R
+
+    def torch_replacement_remove_ids(self, x):
+        # Not yet implemented
+        assert type(x) is not torch.Tensor, 'remove_ids not yet implemented for torch'
+        return self.remove_ids_numpy(x)
+
+    def torch_replacement_reconstruct(self, key, x=None):
+        # No tensor inputs are required, but with importing this module, we
+        # assume that the default should be torch tensors. If we are passed a
+        # numpy array, however, assume that the user is overriding this default
+        if (x is not None) and (type(x) is np.ndarray):
+            # Forward to faiss __init__.py base method
+            return self.reconstruct_numpy(key, x)
+
+        # If the index is a CPU index, the default device is CPU, otherwise we
+        # produce a GPU tensor
+        device = torch.device('cpu')
+        if hasattr(self, 'getDevice'):
+            # same device as the index
+            device = torch.device('cuda', self.getDevice())
+
+        if x is None:
+            x = torch.empty(self.d, device=device, dtype=torch.float32)
+        else:
+            assert type(x) is torch.Tensor
+            assert x.shape == (self.d, )
+        x_ptr = swig_ptr_from_FloatTensor(x)
+
+        if x.is_cuda:
+            assert hasattr(self, 'getDevice'), 'GPU tensor on CPU index not allowed'
+
+            # On the GPU, use proper stream ordering
+            with using_stream(self.getResources()):
+                self.reconstruct_c(key, x_ptr)
+        else:
+            # CPU torch
+            self.reconstruct_c(key, x_ptr)
+
+        return x
+
+    def torch_replacement_reconstruct_n(self, n0, ni, x=None):
+        # No tensor inputs are required, but with importing this module, we
+        # assume that the default should be torch tensors. If we are passed a
+        # numpy array, however, assume that the user is overriding this default
+        if (x is not None) and (type(x) is np.ndarray):
+            # Forward to faiss __init__.py base method
+            return self.reconstruct_n_numpy(n0, ni, x)
+
+        # If the index is a CPU index, the default device is CPU, otherwise we
+        # produce a GPU tensor
+        device = torch.device('cpu')
+        if hasattr(self, 'getDevice'):
+            # same device as the index
+            device = torch.device('cuda', self.getDevice())
+
+        if x is None:
+            x = torch.empty(ni, self.d, device=device, dtype=torch.float32)
+        else:
+            assert type(x) is torch.Tensor
+            assert x.shape == (ni, self.d)
+        x_ptr = swig_ptr_from_FloatTensor(x)
+
+        if x.is_cuda:
+            assert hasattr(self, 'getDevice'), 'GPU tensor on CPU index not allowed'
+
+            # On the GPU, use proper stream ordering
+            with using_stream(self.getResources()):
+                self.reconstruct_n_c(n0, ni, x_ptr)
+        else:
+            # CPU torch
+            self.reconstruct_n_c(n0, ni, x_ptr)
+
+        return x
+
+    def torch_replacement_update_vectors(self, keys, x):
+        if type(keys) is np.ndarray:
+            # Forward to faiss __init__.py base method
+            return self.update_vectors_numpy(keys, x)
+
+        assert type(keys) is torch.Tensor
+        (n, ) = keys.shape
+        keys_ptr = swig_ptr_from_IndicesTensor(keys)
+
+        assert type(x) is torch.Tensor
+        assert x.shape == (n, self.d)
+        x_ptr = swig_ptr_from_FloatTensor(x)
+
+        if x.is_cuda:
+            assert hasattr(self, 'getDevice'), 'GPU tensor on CPU index not allowed'
+
+            # On the GPU, use proper stream ordering
+            with using_stream(self.getResources()):
+                self.update_vectors_c(n, keys_ptr, x_ptr)
+        else:
+            # CPU torch
+            self.update_vectors_c(n, keys_ptr, x_ptr)
+
+    # Until the GPU version is implemented, we do not support pre-allocated
+    # output buffers
+    def torch_replacement_range_search(self, x, thresh):
+        if type(x) is np.ndarray:
+            # Forward to faiss __init__.py base method
+            return self.range_search_numpy(x, thresh)
+
+        assert type(x) is torch.Tensor
+        n, d = x.shape
+        assert d == self.d
+        x_ptr = swig_ptr_from_FloatTensor(x)
+
+        assert not x.is_cuda, 'Range search using GPU tensor not yet implemented'
+        assert not hasattr(self, 'getDevice'), 'Range search on GPU index not yet implemented'
+
+        res = faiss.RangeSearchResult(n)
+        self.range_search_c(n, x_ptr, thresh, res)
+
+        # get pointers and copy them
+        # FIXME: no rev_swig_ptr equivalent for torch.Tensor, just convert
+        # np to torch
+        # NOTE: torch does not support np.uint64, just np.int64
+        lims = torch.from_numpy(faiss.rev_swig_ptr(res.lims, n + 1).copy().astype('int64'))
+        nd = int(lims[-1])
+        D = torch.from_numpy(faiss.rev_swig_ptr(res.distances, nd).copy())
+        I = torch.from_numpy(faiss.rev_swig_ptr(res.labels, nd).copy())
+
+        return lims, D, I
+
+    def torch_replacement_sa_encode(self, x, codes=None):
+        if type(x) is np.ndarray:
+            # Forward to faiss __init__.py base method
+            return self.sa_encode_numpy(x, codes)
+
+        assert type(x) is torch.Tensor
+        n, d = x.shape
+        assert d == self.d
+        x_ptr = swig_ptr_from_FloatTensor(x)
+
+        if codes is None:
+            codes = torch.empty(n, self.sa_code_size(), dtype=torch.uint8)
+        else:
+            assert codes.shape == (n, self.sa_code_size())
+        codes_ptr = swig_ptr_from_UInt8Tensor(codes)
+
+        if x.is_cuda:
+            assert hasattr(self, 'getDevice'), 'GPU tensor on CPU index not allowed'
+
+            # On the GPU, use proper stream ordering
+            with using_stream(self.getResources()):
+                self.sa_encode_c(n, x_ptr, codes_ptr)
+        else:
+            # CPU torch
+            self.sa_encode_c(n, x_ptr, codes_ptr)
+
+        return codes
+
+    def torch_replacement_sa_decode(self, codes, x=None):
+        if type(codes) is np.ndarray:
+            # Forward to faiss __init__.py base method
+            return self.sa_decode_numpy(codes, x)
+
+        assert type(codes) is torch.Tensor
+        n, cs = codes.shape
+        assert cs == self.sa_code_size()
+        codes_ptr = swig_ptr_from_UInt8Tensor(codes)
+
+        if x is None:
+            x = torch.empty(n, self.d, dtype=torch.float32)
+        else:
+            assert type(x) is torch.Tensor
+            assert x.shape == (n, self.d)
+        x_ptr = swig_ptr_from_FloatTensor(x)
+
+        if codes.is_cuda:
+            assert hasattr(self, 'getDevice'), 'GPU tensor on CPU index not allowed'
+
+            # On the GPU, use proper stream ordering
+            with using_stream(self.getResources()):
+                self.sa_decode_c(n, codes_ptr, x_ptr)
+        else:
+            # CPU torch
+            self.sa_decode_c(n, codes_ptr, x_ptr)
+
+        return x
+
+
+    torch_replace_method(the_class, 'add', torch_replacement_add)
+    torch_replace_method(the_class, 'add_with_ids', torch_replacement_add_with_ids)
+    torch_replace_method(the_class, 'assign', torch_replacement_assign)
+    torch_replace_method(the_class, 'train', torch_replacement_train)
+    torch_replace_method(the_class, 'search', torch_replacement_search)
+    torch_replace_method(the_class, 'remove_ids', torch_replacement_remove_ids)
+    torch_replace_method(the_class, 'reconstruct', torch_replacement_reconstruct)
+    torch_replace_method(the_class, 'reconstruct_n', torch_replacement_reconstruct_n)
+    torch_replace_method(the_class, 'range_search', torch_replacement_range_search)
+    torch_replace_method(the_class, 'update_vectors', torch_replacement_update_vectors,
+                         ignore_missing=True)
+    torch_replace_method(the_class, 'search_and_reconstruct',
+                         torch_replacement_search_and_reconstruct, ignore_missing=True)
+    torch_replace_method(the_class, 'sa_encode', torch_replacement_sa_encode)
+    torch_replace_method(the_class, 'sa_decode', torch_replacement_sa_decode)
+
+faiss_module = sys.modules['faiss']
+
+# Re-patch anything that inherits from faiss.Index to add the torch bindings
+for symbol in dir(faiss_module):
+    obj = getattr(faiss_module, symbol)
+    if inspect.isclass(obj):
+        the_class = obj
+        if issubclass(the_class, faiss.Index):
+            handle_torch_Index(the_class)
+
+# allows torch tensor usage with bfKnn
+def torch_replacement_knn_gpu(res, xq, xb, k, D=None, I=None, metric=faiss.METRIC_L2):
+    if type(xb) is np.ndarray:
+        # Forward to faiss __init__.py base method
+        return faiss.knn_gpu_numpy(res, xq, xb, k, D, I, metric)
+
+    nb, d = xb.size()
+    if xb.is_contiguous():
+        xb_row_major = True
+    elif xb.t().is_contiguous():
+        xb = xb.t()
+        xb_row_major = False
+    else:
+        raise TypeError('matrix should be row or column-major')
+
+    if xb.dtype == torch.float32:
+        xb_type = faiss.DistanceDataType_F32
+        xb_ptr = swig_ptr_from_FloatTensor(xb)
+    elif xb.dtype == torch.float16:
+        xb_type = faiss.DistanceDataType_F16
+        xb_ptr = swig_ptr_from_HalfTensor(xb)
+    else:
+        raise TypeError('xb must be f32 or f16')
+
+    nq, d2 = xq.size()
+    assert d2 == d
+    if xq.is_contiguous():
+        xq_row_major = True
+    elif xq.t().is_contiguous():
+        xq = xq.t()
+        xq_row_major = False
+    else:
+        raise TypeError('matrix should be row or column-major')
+
+    if xq.dtype == torch.float32:
+        xq_type = faiss.DistanceDataType_F32
+        xq_ptr = swig_ptr_from_FloatTensor(xq)
+    elif xq.dtype == torch.float16:
+        xq_type = faiss.DistanceDataType_F16
+        xq_ptr = swig_ptr_from_HalfTensor(xq)
+    else:
+        raise TypeError('xq must be f32 or f16')
+
+    if D is None:
+        D = torch.empty(nq, k, device=xb.device, dtype=torch.float32)
+    else:
+        assert D.shape == (nq, k)
+        # interface takes void*, we need to check this
+        assert (D.dtype == torch.float32)
+
+    if I is None:
+        I = torch.empty(nq, k, device=xb.device, dtype=torch.int64)
+    else:
+        assert I.shape == (nq, k)
+
+    if I.dtype == torch.int64:
+        I_type = faiss.IndicesDataType_I64
+        I_ptr = swig_ptr_from_IndicesTensor(I)
+    elif I.dtype == I.dtype == torch.int32:
+        I_type = faiss.IndicesDataType_I32
+        I_ptr = swig_ptr_from_IntTensor(I)
+    else:
+        raise TypeError('I must be i64 or i32')
+
+    D_ptr = swig_ptr_from_FloatTensor(D)
+
+    args = faiss.GpuDistanceParams()
+    args.metric = metric
+    args.k = k
+    args.dims = d
+    args.vectors = xb_ptr
+    args.vectorsRowMajor = xb_row_major
+    args.vectorType = xb_type
+    args.numVectors = nb
+    args.queries = xq_ptr
+    args.queriesRowMajor = xq_row_major
+    args.queryType = xq_type
+    args.numQueries = nq
+    args.outDistances = D_ptr
+    args.outIndices = I_ptr
+    args.outIndicesType = I_type
+
+    with using_stream(res):
+        faiss.bfKnn(res, args)
+
+    return D, I
+
+torch_replace_method(faiss_module, 'knn_gpu', torch_replacement_knn_gpu, True, True)
+
+# allows torch tensor usage with bfKnn for all pairwise distances
+def torch_replacement_pairwise_distance_gpu(res, xq, xb, D=None, metric=faiss.METRIC_L2):
+    if type(xb) is np.ndarray:
+        # Forward to faiss __init__.py base method
+        return faiss.pairwise_distance_gpu_numpy(res, xq, xb, D, metric)
+
+    nb, d = xb.size()
+    if xb.is_contiguous():
+        xb_row_major = True
+    elif xb.t().is_contiguous():
+        xb = xb.t()
+        xb_row_major = False
+    else:
+        raise TypeError('xb matrix should be row or column-major')
+
+    if xb.dtype == torch.float32:
+        xb_type = faiss.DistanceDataType_F32
+        xb_ptr = swig_ptr_from_FloatTensor(xb)
+    elif xb.dtype == torch.float16:
+        xb_type = faiss.DistanceDataType_F16
+        xb_ptr = swig_ptr_from_HalfTensor(xb)
+    else:
+        raise TypeError('xb must be float32 or float16')
+
+    nq, d2 = xq.size()
+    assert d2 == d
+    if xq.is_contiguous():
+        xq_row_major = True
+    elif xq.t().is_contiguous():
+        xq = xq.t()
+        xq_row_major = False
+    else:
+        raise TypeError('xq matrix should be row or column-major')
+
+    if xq.dtype == torch.float32:
+        xq_type = faiss.DistanceDataType_F32
+        xq_ptr = swig_ptr_from_FloatTensor(xq)
+    elif xq.dtype == torch.float16:
+        xq_type = faiss.DistanceDataType_F16
+        xq_ptr = swig_ptr_from_HalfTensor(xq)
+    else:
+        raise TypeError('xq must be float32 or float16')
+
+    if D is None:
+        D = torch.empty(nq, nb, device=xb.device, dtype=torch.float32)
+    else:
+        assert D.shape == (nq, nb)
+        # interface takes void*, we need to check this
+        assert (D.dtype == torch.float32)
+
+    D_ptr = swig_ptr_from_FloatTensor(D)
+
+    args = faiss.GpuDistanceParams()
+    args.metric = metric
+    args.k = -1 # selects all pairwise distance
+    args.dims = d
+    args.vectors = xb_ptr
+    args.vectorsRowMajor = xb_row_major
+    args.vectorType = xb_type
+    args.numVectors = nb
+    args.queries = xq_ptr
+    args.queriesRowMajor = xq_row_major
+    args.queryType = xq_type
+    args.numQueries = nq
+    args.outDistances = D_ptr
+
+    with using_stream(res):
+        faiss.bfKnn(res, args)
+
+    return D
+
+torch_replace_method(faiss_module, 'pairwise_distance_gpu', torch_replacement_pairwise_distance_gpu, True, True)
diff --git a/build/faiss/python/contrib/vecs_io.py b/build/faiss/python/contrib/vecs_io.py
new file mode 100644
index 0000000000000000000000000000000000000000..ea75d5f94d9b7d2c764c9afc0a1431c3bf565cca
--- /dev/null
+++ b/build/faiss/python/contrib/vecs_io.py
@@ -0,0 +1,50 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+import numpy as np
+
+"""
+I/O functions in fvecs, bvecs, ivecs formats
+definition of the formats here: http://corpus-texmex.irisa.fr/
+"""
+
+
+def ivecs_read(fname):
+    a = np.fromfile(fname, dtype='int32')
+    d = a[0]
+    return a.reshape(-1, d + 1)[:, 1:].copy()
+
+
+def fvecs_read(fname):
+    return ivecs_read(fname).view('float32')
+
+
+def ivecs_mmap(fname):
+    a = np.memmap(fname, dtype='int32', mode='r')
+    d = a[0]
+    return a.reshape(-1, d + 1)[:, 1:]
+
+
+def fvecs_mmap(fname):
+    return ivecs_mmap(fname).view('float32')
+
+
+def bvecs_mmap(fname):
+    x = np.memmap(fname, dtype='uint8', mode='r')
+    d = x[:4].view('int32')[0]
+    return x.reshape(-1, d + 4)[:, 4:]
+
+
+def ivecs_write(fname, m):
+    n, d = m.shape
+    m1 = np.empty((n, d + 1), dtype='int32')
+    m1[:, 0] = d
+    m1[:, 1:] = m
+    m1.tofile(fname)
+
+
+def fvecs_write(fname, m):
+    m = m.astype('float32')
+    ivecs_write(fname, m.view('int32'))
diff --git a/build/faiss/python/libfaiss_python_callbacks.so b/build/faiss/python/libfaiss_python_callbacks.so
new file mode 100755
index 0000000000000000000000000000000000000000..d7c2ae7671af0f02bb0740a1a8c1a8f4a37aa825
Binary files /dev/null and b/build/faiss/python/libfaiss_python_callbacks.so differ
diff --git a/build/faiss/python/loader.py b/build/faiss/python/loader.py
new file mode 100644
index 0000000000000000000000000000000000000000..dd5839908e24d11e91f3f60cf8e18cb1e4297f75
--- /dev/null
+++ b/build/faiss/python/loader.py
@@ -0,0 +1,66 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+from distutils.version import LooseVersion
+import platform
+import subprocess
+import logging
+import os
+
+
+def supported_instruction_sets():
+    """
+    Returns the set of supported CPU features, see
+    https://github.com/numpy/numpy/blob/master/numpy/core/src/common/npy_cpu_features.h
+    for the list of features that this set may contain per architecture.
+
+    Example:
+    >>> supported_instruction_sets()  # for x86
+    {"SSE2", "AVX2", ...}
+    >>> supported_instruction_sets()  # for PPC
+    {"VSX", "VSX2", ...}
+    >>> supported_instruction_sets()  # for ARM
+    {"NEON", "ASIMD", ...}
+    """
+    import numpy
+    if LooseVersion(numpy.__version__) >= "1.19":
+        # use private API as next-best thing until numpy/numpy#18058 is solved
+        from numpy.core._multiarray_umath import __cpu_features__
+        # __cpu_features__ is a dictionary with CPU features
+        # as keys, and True / False as values
+        supported = {k for k, v in __cpu_features__.items() if v}
+        for f in os.getenv("FAISS_DISABLE_CPU_FEATURES", "").split(", \t\n\r"):
+            supported.discard(f)
+        return supported
+
+    # platform-dependent legacy fallback before numpy 1.19, no windows
+    if platform.system() == "Darwin":
+        if subprocess.check_output(["/usr/sbin/sysctl", "hw.optional.avx2_0"])[-1] == '1':
+            return {"AVX2"}
+    elif platform.system() == "Linux":
+        import numpy.distutils.cpuinfo
+        if "avx2" in numpy.distutils.cpuinfo.cpu.info[0].get('flags', ""):
+            return {"AVX2"}
+    return set()
+
+
+logger = logging.getLogger(__name__)
+
+has_AVX2 = "AVX2" in supported_instruction_sets()
+if has_AVX2:
+    try:
+        logger.info("Loading faiss with AVX2 support.")
+        from .swigfaiss_avx2 import *
+        logger.info("Successfully loaded faiss with AVX2 support.")
+    except ImportError as e:
+        logger.info(f"Could not load library with AVX2 support due to:\n{e!r}")
+        # reset so that we load without AVX2 below
+        has_AVX2 = False
+
+if not has_AVX2:
+    # we import * so that the symbol X can be accessed as faiss.X
+    logger.info("Loading faiss.")
+    from .swigfaiss import *
+    logger.info("Successfully loaded faiss.")
diff --git a/build/faiss/python/setup.py b/build/faiss/python/setup.py
new file mode 100644
index 0000000000000000000000000000000000000000..9ef3a03433350dd69552f72b7b9149dcadce912d
--- /dev/null
+++ b/build/faiss/python/setup.py
@@ -0,0 +1,67 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+from __future__ import print_function
+from setuptools import setup, find_packages
+import os
+import shutil
+import platform
+
+# make the faiss python package dir
+shutil.rmtree("faiss", ignore_errors=True)
+os.mkdir("faiss")
+shutil.copytree("contrib", "faiss/contrib")
+shutil.copyfile("__init__.py", "faiss/__init__.py")
+shutil.copyfile("loader.py", "faiss/loader.py")
+
+ext = ".pyd" if platform.system() == 'Windows' else ".so"
+prefix = "Release/" * (platform.system() == 'Windows')
+
+swigfaiss_generic_lib = f"{prefix}_swigfaiss{ext}"
+swigfaiss_avx2_lib = f"{prefix}_swigfaiss_avx2{ext}"
+
+found_swigfaiss_generic = os.path.exists(swigfaiss_generic_lib)
+found_swigfaiss_avx2 = os.path.exists(swigfaiss_avx2_lib)
+
+assert (found_swigfaiss_generic or found_swigfaiss_avx2), \
+    f"Could not find {swigfaiss_generic_lib} or " \
+    f"{swigfaiss_avx2_lib}. Faiss may not be compiled yet."
+
+if found_swigfaiss_generic:
+    print(f"Copying {swigfaiss_generic_lib}")
+    shutil.copyfile("swigfaiss.py", "faiss/swigfaiss.py")
+    shutil.copyfile(swigfaiss_generic_lib, f"faiss/_swigfaiss{ext}")
+
+if found_swigfaiss_avx2:
+    print(f"Copying {swigfaiss_avx2_lib}")
+    shutil.copyfile("swigfaiss_avx2.py", "faiss/swigfaiss_avx2.py")
+    shutil.copyfile(swigfaiss_avx2_lib, f"faiss/_swigfaiss_avx2{ext}")
+
+long_description="""
+Faiss is a library for efficient similarity search and clustering of dense
+vectors. It contains algorithms that search in sets of vectors of any size,
+ up to ones that possibly do not fit in RAM. It also contains supporting
+code for evaluation and parameter tuning. Faiss is written in C++ with
+complete wrappers for Python/numpy. Some of the most useful algorithms
+are implemented on the GPU. It is developed by Facebook AI Research.
+"""
+setup(
+    name='faiss',
+    version='1.7.2',
+    description='A library for efficient similarity search and clustering of dense vectors',
+    long_description=long_description,
+    url='https://github.com/facebookresearch/faiss',
+    author='Matthijs Douze, Jeff Johnson, Herve Jegou, Lucas Hosseini',
+    author_email='matthijs@fb.com',
+    license='MIT',
+    keywords='search nearest neighbors',
+
+    install_requires=['numpy'],
+    packages=['faiss', 'faiss.contrib'],
+    package_data={
+        'faiss': ['*.so', '*.pyd'],
+    },
+    zip_safe=False,
+)
diff --git a/build/faiss/python/swigfaiss.py b/build/faiss/python/swigfaiss.py
new file mode 100644
index 0000000000000000000000000000000000000000..ab98a89aec71b14d14018f14616886ffbc8e9bb0
--- /dev/null
+++ b/build/faiss/python/swigfaiss.py
@@ -0,0 +1,10852 @@
+# This file was automatically generated by SWIG (http://www.swig.org).
+# Version 4.0.2
+#
+# Do not make changes to this file unless you know what you are doing--modify
+# the SWIG interface file instead.
+
+from sys import version_info as _swig_python_version_info
+if _swig_python_version_info < (2, 7, 0):
+    raise RuntimeError("Python 2.7 or later required")
+
+# Import the low-level C/C++ module
+if __package__ or "." in __name__:
+    from . import _swigfaiss
+else:
+    import _swigfaiss
+
+try:
+    import builtins as __builtin__
+except ImportError:
+    import __builtin__
+
+def _swig_repr(self):
+    try:
+        strthis = "proxy of " + self.this.__repr__()
+    except __builtin__.Exception:
+        strthis = ""
+    return "<%s.%s; %s >" % (self.__class__.__module__, self.__class__.__name__, strthis,)
+
+
+def _swig_setattr_nondynamic_instance_variable(set):
+    def set_instance_attr(self, name, value):
+        if name == "thisown":
+            self.this.own(value)
+        elif name == "this":
+            set(self, name, value)
+        elif hasattr(self, name) and isinstance(getattr(type(self), name), property):
+            set(self, name, value)
+        else:
+            raise AttributeError("You cannot add instance attributes to %s" % self)
+    return set_instance_attr
+
+
+def _swig_setattr_nondynamic_class_variable(set):
+    def set_class_attr(cls, name, value):
+        if hasattr(cls, name) and not isinstance(getattr(cls, name), property):
+            set(cls, name, value)
+        else:
+            raise AttributeError("You cannot add class attributes to %s" % cls)
+    return set_class_attr
+
+
+def _swig_add_metaclass(metaclass):
+    """Class decorator for adding a metaclass to a SWIG wrapped class - a slimmed down version of six.add_metaclass"""
+    def wrapper(cls):
+        return metaclass(cls.__name__, cls.__bases__, cls.__dict__.copy())
+    return wrapper
+
+
+class _SwigNonDynamicMeta(type):
+    """Meta class to enforce nondynamic attributes (no new attributes) for a class"""
+    __setattr__ = _swig_setattr_nondynamic_class_variable(type.__setattr__)
+
+
+class SwigPyIterator(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    __swig_destroy__ = _swigfaiss.delete_SwigPyIterator
+
+    def value(self):
+        return _swigfaiss.SwigPyIterator_value(self)
+
+    def incr(self, n=1):
+        return _swigfaiss.SwigPyIterator_incr(self, n)
+
+    def decr(self, n=1):
+        return _swigfaiss.SwigPyIterator_decr(self, n)
+
+    def distance(self, x):
+        return _swigfaiss.SwigPyIterator_distance(self, x)
+
+    def equal(self, x):
+        return _swigfaiss.SwigPyIterator_equal(self, x)
+
+    def copy(self):
+        return _swigfaiss.SwigPyIterator_copy(self)
+
+    def next(self):
+        return _swigfaiss.SwigPyIterator_next(self)
+
+    def __next__(self):
+        return _swigfaiss.SwigPyIterator___next__(self)
+
+    def previous(self):
+        return _swigfaiss.SwigPyIterator_previous(self)
+
+    def advance(self, n):
+        return _swigfaiss.SwigPyIterator_advance(self, n)
+
+    def __eq__(self, x):
+        return _swigfaiss.SwigPyIterator___eq__(self, x)
+
+    def __ne__(self, x):
+        return _swigfaiss.SwigPyIterator___ne__(self, x)
+
+    def __iadd__(self, n):
+        return _swigfaiss.SwigPyIterator___iadd__(self, n)
+
+    def __isub__(self, n):
+        return _swigfaiss.SwigPyIterator___isub__(self, n)
+
+    def __add__(self, n):
+        return _swigfaiss.SwigPyIterator___add__(self, n)
+
+    def __sub__(self, *args):
+        return _swigfaiss.SwigPyIterator___sub__(self, *args)
+    def __iter__(self):
+        return self
+
+# Register SwigPyIterator in _swigfaiss:
+_swigfaiss.SwigPyIterator_swigregister(SwigPyIterator)
+
+SHARED_PTR_DISOWN = _swigfaiss.SHARED_PTR_DISOWN
+class Float32Vector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.Float32Vector_swiginit(self, _swigfaiss.new_Float32Vector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.Float32Vector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.Float32Vector_clear(self)
+
+    def data(self):
+        return _swigfaiss.Float32Vector_data(self)
+
+    def size(self):
+        return _swigfaiss.Float32Vector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.Float32Vector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.Float32Vector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.Float32Vector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_Float32Vector
+
+# Register Float32Vector in _swigfaiss:
+_swigfaiss.Float32Vector_swigregister(Float32Vector)
+
+class Float64Vector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.Float64Vector_swiginit(self, _swigfaiss.new_Float64Vector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.Float64Vector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.Float64Vector_clear(self)
+
+    def data(self):
+        return _swigfaiss.Float64Vector_data(self)
+
+    def size(self):
+        return _swigfaiss.Float64Vector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.Float64Vector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.Float64Vector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.Float64Vector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_Float64Vector
+
+# Register Float64Vector in _swigfaiss:
+_swigfaiss.Float64Vector_swigregister(Float64Vector)
+
+class Int8Vector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.Int8Vector_swiginit(self, _swigfaiss.new_Int8Vector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.Int8Vector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.Int8Vector_clear(self)
+
+    def data(self):
+        return _swigfaiss.Int8Vector_data(self)
+
+    def size(self):
+        return _swigfaiss.Int8Vector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.Int8Vector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.Int8Vector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.Int8Vector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_Int8Vector
+
+# Register Int8Vector in _swigfaiss:
+_swigfaiss.Int8Vector_swigregister(Int8Vector)
+
+class Int16Vector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.Int16Vector_swiginit(self, _swigfaiss.new_Int16Vector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.Int16Vector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.Int16Vector_clear(self)
+
+    def data(self):
+        return _swigfaiss.Int16Vector_data(self)
+
+    def size(self):
+        return _swigfaiss.Int16Vector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.Int16Vector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.Int16Vector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.Int16Vector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_Int16Vector
+
+# Register Int16Vector in _swigfaiss:
+_swigfaiss.Int16Vector_swigregister(Int16Vector)
+
+class Int32Vector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.Int32Vector_swiginit(self, _swigfaiss.new_Int32Vector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.Int32Vector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.Int32Vector_clear(self)
+
+    def data(self):
+        return _swigfaiss.Int32Vector_data(self)
+
+    def size(self):
+        return _swigfaiss.Int32Vector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.Int32Vector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.Int32Vector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.Int32Vector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_Int32Vector
+
+# Register Int32Vector in _swigfaiss:
+_swigfaiss.Int32Vector_swigregister(Int32Vector)
+
+class Int64Vector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.Int64Vector_swiginit(self, _swigfaiss.new_Int64Vector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.Int64Vector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.Int64Vector_clear(self)
+
+    def data(self):
+        return _swigfaiss.Int64Vector_data(self)
+
+    def size(self):
+        return _swigfaiss.Int64Vector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.Int64Vector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.Int64Vector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.Int64Vector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_Int64Vector
+
+# Register Int64Vector in _swigfaiss:
+_swigfaiss.Int64Vector_swigregister(Int64Vector)
+
+class UInt8Vector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.UInt8Vector_swiginit(self, _swigfaiss.new_UInt8Vector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.UInt8Vector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.UInt8Vector_clear(self)
+
+    def data(self):
+        return _swigfaiss.UInt8Vector_data(self)
+
+    def size(self):
+        return _swigfaiss.UInt8Vector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.UInt8Vector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.UInt8Vector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.UInt8Vector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_UInt8Vector
+
+# Register UInt8Vector in _swigfaiss:
+_swigfaiss.UInt8Vector_swigregister(UInt8Vector)
+
+class UInt16Vector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.UInt16Vector_swiginit(self, _swigfaiss.new_UInt16Vector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.UInt16Vector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.UInt16Vector_clear(self)
+
+    def data(self):
+        return _swigfaiss.UInt16Vector_data(self)
+
+    def size(self):
+        return _swigfaiss.UInt16Vector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.UInt16Vector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.UInt16Vector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.UInt16Vector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_UInt16Vector
+
+# Register UInt16Vector in _swigfaiss:
+_swigfaiss.UInt16Vector_swigregister(UInt16Vector)
+
+class UInt32Vector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.UInt32Vector_swiginit(self, _swigfaiss.new_UInt32Vector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.UInt32Vector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.UInt32Vector_clear(self)
+
+    def data(self):
+        return _swigfaiss.UInt32Vector_data(self)
+
+    def size(self):
+        return _swigfaiss.UInt32Vector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.UInt32Vector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.UInt32Vector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.UInt32Vector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_UInt32Vector
+
+# Register UInt32Vector in _swigfaiss:
+_swigfaiss.UInt32Vector_swigregister(UInt32Vector)
+
+class UInt64Vector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.UInt64Vector_swiginit(self, _swigfaiss.new_UInt64Vector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.UInt64Vector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.UInt64Vector_clear(self)
+
+    def data(self):
+        return _swigfaiss.UInt64Vector_data(self)
+
+    def size(self):
+        return _swigfaiss.UInt64Vector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.UInt64Vector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.UInt64Vector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.UInt64Vector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_UInt64Vector
+
+# Register UInt64Vector in _swigfaiss:
+_swigfaiss.UInt64Vector_swigregister(UInt64Vector)
+
+class Float32VectorVector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.Float32VectorVector_swiginit(self, _swigfaiss.new_Float32VectorVector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.Float32VectorVector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.Float32VectorVector_clear(self)
+
+    def data(self):
+        return _swigfaiss.Float32VectorVector_data(self)
+
+    def size(self):
+        return _swigfaiss.Float32VectorVector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.Float32VectorVector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.Float32VectorVector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.Float32VectorVector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_Float32VectorVector
+
+# Register Float32VectorVector in _swigfaiss:
+_swigfaiss.Float32VectorVector_swigregister(Float32VectorVector)
+
+class UInt8VectorVector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.UInt8VectorVector_swiginit(self, _swigfaiss.new_UInt8VectorVector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.UInt8VectorVector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.UInt8VectorVector_clear(self)
+
+    def data(self):
+        return _swigfaiss.UInt8VectorVector_data(self)
+
+    def size(self):
+        return _swigfaiss.UInt8VectorVector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.UInt8VectorVector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.UInt8VectorVector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.UInt8VectorVector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_UInt8VectorVector
+
+# Register UInt8VectorVector in _swigfaiss:
+_swigfaiss.UInt8VectorVector_swigregister(UInt8VectorVector)
+
+class Int32VectorVector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.Int32VectorVector_swiginit(self, _swigfaiss.new_Int32VectorVector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.Int32VectorVector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.Int32VectorVector_clear(self)
+
+    def data(self):
+        return _swigfaiss.Int32VectorVector_data(self)
+
+    def size(self):
+        return _swigfaiss.Int32VectorVector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.Int32VectorVector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.Int32VectorVector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.Int32VectorVector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_Int32VectorVector
+
+# Register Int32VectorVector in _swigfaiss:
+_swigfaiss.Int32VectorVector_swigregister(Int32VectorVector)
+
+class Int64VectorVector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.Int64VectorVector_swiginit(self, _swigfaiss.new_Int64VectorVector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.Int64VectorVector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.Int64VectorVector_clear(self)
+
+    def data(self):
+        return _swigfaiss.Int64VectorVector_data(self)
+
+    def size(self):
+        return _swigfaiss.Int64VectorVector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.Int64VectorVector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.Int64VectorVector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.Int64VectorVector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_Int64VectorVector
+
+# Register Int64VectorVector in _swigfaiss:
+_swigfaiss.Int64VectorVector_swigregister(Int64VectorVector)
+
+class VectorTransformVector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.VectorTransformVector_swiginit(self, _swigfaiss.new_VectorTransformVector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.VectorTransformVector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.VectorTransformVector_clear(self)
+
+    def data(self):
+        return _swigfaiss.VectorTransformVector_data(self)
+
+    def size(self):
+        return _swigfaiss.VectorTransformVector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.VectorTransformVector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.VectorTransformVector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.VectorTransformVector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_VectorTransformVector
+
+# Register VectorTransformVector in _swigfaiss:
+_swigfaiss.VectorTransformVector_swigregister(VectorTransformVector)
+
+class OperatingPointVector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.OperatingPointVector_swiginit(self, _swigfaiss.new_OperatingPointVector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.OperatingPointVector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.OperatingPointVector_clear(self)
+
+    def data(self):
+        return _swigfaiss.OperatingPointVector_data(self)
+
+    def size(self):
+        return _swigfaiss.OperatingPointVector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.OperatingPointVector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.OperatingPointVector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.OperatingPointVector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_OperatingPointVector
+
+# Register OperatingPointVector in _swigfaiss:
+_swigfaiss.OperatingPointVector_swigregister(OperatingPointVector)
+
+class InvertedListsPtrVector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.InvertedListsPtrVector_swiginit(self, _swigfaiss.new_InvertedListsPtrVector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.InvertedListsPtrVector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.InvertedListsPtrVector_clear(self)
+
+    def data(self):
+        return _swigfaiss.InvertedListsPtrVector_data(self)
+
+    def size(self):
+        return _swigfaiss.InvertedListsPtrVector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.InvertedListsPtrVector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.InvertedListsPtrVector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.InvertedListsPtrVector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_InvertedListsPtrVector
+
+# Register InvertedListsPtrVector in _swigfaiss:
+_swigfaiss.InvertedListsPtrVector_swigregister(InvertedListsPtrVector)
+
+class RepeatVector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.RepeatVector_swiginit(self, _swigfaiss.new_RepeatVector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.RepeatVector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.RepeatVector_clear(self)
+
+    def data(self):
+        return _swigfaiss.RepeatVector_data(self)
+
+    def size(self):
+        return _swigfaiss.RepeatVector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.RepeatVector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.RepeatVector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.RepeatVector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_RepeatVector
+
+# Register RepeatVector in _swigfaiss:
+_swigfaiss.RepeatVector_swigregister(RepeatVector)
+
+class ClusteringIterationStatsVector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.ClusteringIterationStatsVector_swiginit(self, _swigfaiss.new_ClusteringIterationStatsVector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.ClusteringIterationStatsVector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.ClusteringIterationStatsVector_clear(self)
+
+    def data(self):
+        return _swigfaiss.ClusteringIterationStatsVector_data(self)
+
+    def size(self):
+        return _swigfaiss.ClusteringIterationStatsVector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.ClusteringIterationStatsVector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.ClusteringIterationStatsVector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.ClusteringIterationStatsVector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_ClusteringIterationStatsVector
+
+# Register ClusteringIterationStatsVector in _swigfaiss:
+_swigfaiss.ClusteringIterationStatsVector_swigregister(ClusteringIterationStatsVector)
+
+class OnDiskOneListVector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.OnDiskOneListVector_swiginit(self, _swigfaiss.new_OnDiskOneListVector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.OnDiskOneListVector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.OnDiskOneListVector_clear(self)
+
+    def data(self):
+        return _swigfaiss.OnDiskOneListVector_data(self)
+
+    def size(self):
+        return _swigfaiss.OnDiskOneListVector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.OnDiskOneListVector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.OnDiskOneListVector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.OnDiskOneListVector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_OnDiskOneListVector
+
+# Register OnDiskOneListVector in _swigfaiss:
+_swigfaiss.OnDiskOneListVector_swigregister(OnDiskOneListVector)
+
+class GpuResourcesVector(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.GpuResourcesVector_swiginit(self, _swigfaiss.new_GpuResourcesVector())
+
+    def push_back(self, arg2):
+        return _swigfaiss.GpuResourcesVector_push_back(self, arg2)
+
+    def clear(self):
+        return _swigfaiss.GpuResourcesVector_clear(self)
+
+    def data(self):
+        return _swigfaiss.GpuResourcesVector_data(self)
+
+    def size(self):
+        return _swigfaiss.GpuResourcesVector_size(self)
+
+    def at(self, n):
+        return _swigfaiss.GpuResourcesVector_at(self, n)
+
+    def resize(self, n):
+        return _swigfaiss.GpuResourcesVector_resize(self, n)
+
+    def swap(self, other):
+        return _swigfaiss.GpuResourcesVector_swap(self, other)
+    __swig_destroy__ = _swigfaiss.delete_GpuResourcesVector
+
+# Register GpuResourcesVector in _swigfaiss:
+_swigfaiss.GpuResourcesVector_swigregister(GpuResourcesVector)
+
+
+def simd_histogram_8(data, n, min, shift, hist):
+    r"""
+     low level SIMD histogramming functions  8-bin histogram of (x - min) >> shift
+    values outside the range are ignored.
+    the data table should be aligned on 32 bytes
+    """
+    return _swigfaiss.simd_histogram_8(data, n, min, shift, hist)
+
+def simd_histogram_16(data, n, min, shift, hist):
+    r""" same for 16-bin histogram"""
+    return _swigfaiss.simd_histogram_16(data, n, min, shift, hist)
+class PartitionStats(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    bissect_cycles = property(_swigfaiss.PartitionStats_bissect_cycles_get, _swigfaiss.PartitionStats_bissect_cycles_set)
+    compress_cycles = property(_swigfaiss.PartitionStats_compress_cycles_get, _swigfaiss.PartitionStats_compress_cycles_set)
+
+    def __init__(self):
+        _swigfaiss.PartitionStats_swiginit(self, _swigfaiss.new_PartitionStats())
+
+    def reset(self):
+        return _swigfaiss.PartitionStats_reset(self)
+    __swig_destroy__ = _swigfaiss.delete_PartitionStats
+
+# Register PartitionStats in _swigfaiss:
+_swigfaiss.PartitionStats_swigregister(PartitionStats)
+
+
+def bitvec_print(b, d):
+    return _swigfaiss.bitvec_print(b, d)
+
+def fvecs2bitvecs(x, b, d, n):
+    return _swigfaiss.fvecs2bitvecs(x, b, d, n)
+
+def bitvecs2fvecs(b, x, d, n):
+    return _swigfaiss.bitvecs2fvecs(b, x, d, n)
+
+def fvec2bitvec(x, b, d):
+    return _swigfaiss.fvec2bitvec(x, b, d)
+
+def bitvec_shuffle(n, da, db, order, a, b):
+    r""" Shuffle the bits from b(i, j) := a(i, order[j])"""
+    return _swigfaiss.bitvec_shuffle(n, da, db, order, a, b)
+class BitstringWriter(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    code = property(_swigfaiss.BitstringWriter_code_get, _swigfaiss.BitstringWriter_code_set)
+    code_size = property(_swigfaiss.BitstringWriter_code_size_get, _swigfaiss.BitstringWriter_code_size_set)
+    i = property(_swigfaiss.BitstringWriter_i_get, _swigfaiss.BitstringWriter_i_set)
+
+    def __init__(self, code, code_size):
+        _swigfaiss.BitstringWriter_swiginit(self, _swigfaiss.new_BitstringWriter(code, code_size))
+
+    def write(self, x, nbit):
+        return _swigfaiss.BitstringWriter_write(self, x, nbit)
+    __swig_destroy__ = _swigfaiss.delete_BitstringWriter
+
+# Register BitstringWriter in _swigfaiss:
+_swigfaiss.BitstringWriter_swigregister(BitstringWriter)
+cvar = _swigfaiss.cvar
+
+class BitstringReader(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    code = property(_swigfaiss.BitstringReader_code_get, _swigfaiss.BitstringReader_code_set)
+    code_size = property(_swigfaiss.BitstringReader_code_size_get, _swigfaiss.BitstringReader_code_size_set)
+    i = property(_swigfaiss.BitstringReader_i_get, _swigfaiss.BitstringReader_i_set)
+
+    def __init__(self, code, code_size):
+        _swigfaiss.BitstringReader_swiginit(self, _swigfaiss.new_BitstringReader(code, code_size))
+
+    def read(self, nbit):
+        return _swigfaiss.BitstringReader_read(self, nbit)
+    __swig_destroy__ = _swigfaiss.delete_BitstringReader
+
+# Register BitstringReader in _swigfaiss:
+_swigfaiss.BitstringReader_swigregister(BitstringReader)
+
+
+def popcount64(x):
+    return _swigfaiss.popcount64(x)
+
+def hammings(a, b, na, nb, nbytespercode, dis):
+    r"""
+     Compute a set of Hamming distances between na and nb binary vectors
+
+    :type a: uint8_t
+    :param a:             size na * nbytespercode
+    :type b: uint8_t
+    :param b:             size nb * nbytespercode
+    :type nbytespercode: int
+    :param nbytespercode: should be multiple of 8
+    :type dis: int
+    :param dis:           output distances, size na * nb
+    """
+    return _swigfaiss.hammings(a, b, na, nb, nbytespercode, dis)
+
+def hammings_knn_hc(ha, a, b, nb, ncodes, ordered):
+    r"""
+     Return the k smallest Hamming distances for a set of binary query vectors,
+    using a max heap.
+    :type a: uint8_t
+    :param a:       queries, size ha->nh * ncodes
+    :type b: uint8_t
+    :param b:       database, size nb * ncodes
+    :type nb: int
+    :param nb:      number of database vectors
+    :type ncodes: int
+    :param ncodes:  size of the binary codes (bytes)
+    :type ordered: int
+    :param ordered: if != 0: order the results by decreasing distance
+                       (may be bottleneck for k/n > 0.01)
+    """
+    return _swigfaiss.hammings_knn_hc(ha, a, b, nb, ncodes, ordered)
+
+def hammings_knn(ha, a, b, nb, ncodes, ordered):
+    return _swigfaiss.hammings_knn(ha, a, b, nb, ncodes, ordered)
+
+def hammings_knn_mc(a, b, na, nb, k, ncodes, distances, labels):
+    r"""
+     Return the k smallest Hamming distances for a set of binary query vectors,
+    using counting max.
+    :type a: uint8_t
+    :param a:       queries, size na * ncodes
+    :type b: uint8_t
+    :param b:       database, size nb * ncodes
+    :type na: int
+    :param na:      number of query vectors
+    :type nb: int
+    :param nb:      number of database vectors
+    :type k: int
+    :param k:       number of vectors/distances to return
+    :type ncodes: int
+    :param ncodes:  size of the binary codes (bytes)
+    :type distances: int
+    :param distances: output distances from each query vector to its k nearest
+                       neighbors
+    :type labels: int
+    :param labels:  output ids of the k nearest neighbors to each query vector
+    """
+    return _swigfaiss.hammings_knn_mc(a, b, na, nb, k, ncodes, distances, labels)
+
+def hamming_range_search(a, b, na, nb, radius, ncodes, result):
+    r""" same as hammings_knn except we are doing a range search with radius"""
+    return _swigfaiss.hamming_range_search(a, b, na, nb, radius, ncodes, result)
+
+def hamming_count_thres(bs1, bs2, n1, n2, ht, ncodes, nptr):
+    return _swigfaiss.hamming_count_thres(bs1, bs2, n1, n2, ht, ncodes, nptr)
+
+def match_hamming_thres(bs1, bs2, n1, n2, ht, ncodes, idx, dis):
+    return _swigfaiss.match_hamming_thres(bs1, bs2, n1, n2, ht, ncodes, idx, dis)
+
+def crosshamming_count_thres(dbs, n, ht, ncodes, nptr):
+    return _swigfaiss.crosshamming_count_thres(dbs, n, ht, ncodes, nptr)
+
+def get_num_gpus():
+    return _swigfaiss.get_num_gpus()
+
+def gpu_profiler_start():
+    return _swigfaiss.gpu_profiler_start()
+
+def gpu_profiler_stop():
+    return _swigfaiss.gpu_profiler_stop()
+
+def gpu_sync_all_devices():
+    return _swigfaiss.gpu_sync_all_devices()
+Other = _swigfaiss.Other
+r""" Unknown allocation type or miscellaneous (not currently categorized)"""
+FlatData = _swigfaiss.FlatData
+r"""
+    Primary data storage for GpuIndexFlat (the raw matrix of vectors and
+    vector norms if needed)
+    """
+IVFLists = _swigfaiss.IVFLists
+r"""
+    Primary data storage for GpuIndexIVF* (the storage for each individual
+    IVF
+    list)
+    """
+Quantizer = _swigfaiss.Quantizer
+r""" Quantizer (PQ, SQ) dictionary information"""
+QuantizerPrecomputedCodes = _swigfaiss.QuantizerPrecomputedCodes
+r"""
+    For GpuIndexIVFPQ, "precomputed codes" for more efficient PQ lookup
+    require the use of possibly large tables. These are marked separately
+    from
+    Quantizer as these can frequently be 100s - 1000s of MiB in size
+    """
+TemporaryMemoryBuffer = _swigfaiss.TemporaryMemoryBuffer
+r"""
+    StandardGpuResources implementation specific types
+
+    When using StandardGpuResources, temporary memory allocations
+    (MemorySpace::Temporary) come out of a stack region of memory that is
+    allocated up front for each gpu (e.g., 1.5 GiB upon initialization).
+    This
+    allocation by StandardGpuResources is marked with this AllocType.
+    """
+TemporaryMemoryOverflow = _swigfaiss.TemporaryMemoryOverflow
+r"""
+    When using StandardGpuResources, any MemorySpace::Temporary allocations
+    that cannot be satisfied within the TemporaryMemoryBuffer region fall
+    back
+    to calling hipMalloc which are sized to just the request at hand. These
+    "overflow" temporary allocations are marked with this AllocType.
+    """
+
+def allocTypeToString(t):
+    r""" Convert an AllocType to string"""
+    return _swigfaiss.allocTypeToString(t)
+Temporary = _swigfaiss.Temporary
+r"""
+    Temporary device memory (guaranteed to no longer be used upon exit of a
+    top-level index call, and where the streams using it have completed GPU
+    work). Typically backed by Device memory (hipMalloc/hipFree).
+    """
+Device = _swigfaiss.Device
+r""" Managed using hipMalloc/hipFree (typical GPU device memory)"""
+Unified = _swigfaiss.Unified
+r"""
+    Managed using hipMallocManaged/hipFree (typical Unified CPU/GPU
+    memory)
+    """
+
+def memorySpaceToString(s):
+    r""" Convert a MemorySpace to string"""
+    return _swigfaiss.memorySpaceToString(s)
+class AllocInfo(object):
+    r""" Information on what/where an allocation is"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.AllocInfo_swiginit(self, _swigfaiss.new_AllocInfo(*args))
+
+    def toString(self):
+        r""" Returns a string representation of this info"""
+        return _swigfaiss.AllocInfo_toString(self)
+    type = property(_swigfaiss.AllocInfo_type_get, _swigfaiss.AllocInfo_type_set, doc=r""" The internal category of the allocation""")
+    device = property(_swigfaiss.AllocInfo_device_get, _swigfaiss.AllocInfo_device_set, doc=r""" The device on which the allocation is happening""")
+    space = property(_swigfaiss.AllocInfo_space_get, _swigfaiss.AllocInfo_space_set, doc=r""" The memory space of the allocation""")
+    stream = property(_swigfaiss.AllocInfo_stream_get, _swigfaiss.AllocInfo_stream_set, doc=r"""
+    The stream on which new work on the memory will be ordered (e.g., if a
+    piece of memory cached and to be returned for this call was last used on
+    stream 3 and a new memory request is for stream 4, the memory manager
+    will synchronize stream 4 to wait for the completion of stream 3 via
+    events or other stream synchronization.
+
+    The memory manager guarantees that the returned memory is free to use
+    without data races on this stream specified.
+    """)
+    __swig_destroy__ = _swigfaiss.delete_AllocInfo
+
+# Register AllocInfo in _swigfaiss:
+_swigfaiss.AllocInfo_swigregister(AllocInfo)
+
+
+def makeDevAlloc(at, st):
+    r""" Create an AllocInfo for the current device with MemorySpace::Device"""
+    return _swigfaiss.makeDevAlloc(at, st)
+
+def makeTempAlloc(at, st):
+    r""" Create an AllocInfo for the current device with MemorySpace::Temporary"""
+    return _swigfaiss.makeTempAlloc(at, st)
+
+def makeSpaceAlloc(at, sp, st):
+    r""" Create an AllocInfo for the current device"""
+    return _swigfaiss.makeSpaceAlloc(at, sp, st)
+class AllocRequest(AllocInfo):
+    r""" Information on what/where an allocation is, along with how big it should be"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.AllocRequest_swiginit(self, _swigfaiss.new_AllocRequest(*args))
+
+    def toString(self):
+        r""" Returns a string representation of this request"""
+        return _swigfaiss.AllocRequest_toString(self)
+    size = property(_swigfaiss.AllocRequest_size_get, _swigfaiss.AllocRequest_size_set, doc=r""" The size in bytes of the allocation""")
+    __swig_destroy__ = _swigfaiss.delete_AllocRequest
+
+# Register AllocRequest in _swigfaiss:
+_swigfaiss.AllocRequest_swigregister(AllocRequest)
+
+class GpuResources(object):
+    r"""
+    Base class of GPU-side resource provider; hides provision of
+    cuBLAS handles, CUDA streams and all device memory allocation performed
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    __swig_destroy__ = _swigfaiss.delete_GpuResources
+
+    def initializeForDevice(self, device):
+        r"""
+        Call to pre-allocate resources for a particular device. If this is
+        not called, then resources will be allocated at the first time
+        of demand
+        """
+        return _swigfaiss.GpuResources_initializeForDevice(self, device)
+
+    def getBlasHandle(self, device):
+        r""" Returns the cuBLAS handle that we use for the given device"""
+        return _swigfaiss.GpuResources_getBlasHandle(self, device)
+
+    def getDefaultStream(self, device):
+        r"""
+        Returns the stream that we order all computation on for the
+        given device
+        """
+        return _swigfaiss.GpuResources_getDefaultStream(self, device)
+
+    def setDefaultStream(self, device, stream):
+        r"""
+        Overrides the default stream for a device to the user-supplied stream.
+        The resources object does not own this stream (i.e., it will not destroy
+        it).
+        """
+        return _swigfaiss.GpuResources_setDefaultStream(self, device, stream)
+
+    def getAlternateStreams(self, device):
+        r""" Returns the set of alternative streams that we use for the given device"""
+        return _swigfaiss.GpuResources_getAlternateStreams(self, device)
+
+    def allocMemory(self, req):
+        r"""
+        Memory management
+        Returns an allocation from the given memory space, ordered with respect
+        to the given stream (i.e., the first user will be a kernel in this
+        stream). All allocations are sized internally to be the next highest
+        multiple of 16 bytes, and all allocations returned are guaranteed to be
+        16 byte aligned.
+        """
+        return _swigfaiss.GpuResources_allocMemory(self, req)
+
+    def deallocMemory(self, device, _in):
+        r""" Returns a previous allocation"""
+        return _swigfaiss.GpuResources_deallocMemory(self, device, _in)
+
+    def getTempMemoryAvailable(self, device):
+        r"""
+        For MemorySpace::Temporary, how much space is immediately available
+        without hipMalloc allocation?
+        """
+        return _swigfaiss.GpuResources_getTempMemoryAvailable(self, device)
+
+    def getPinnedMemory(self):
+        r""" Returns the available CPU pinned memory buffer"""
+        return _swigfaiss.GpuResources_getPinnedMemory(self)
+
+    def getAsyncCopyStream(self, device):
+        r""" Returns the stream on which we perform async CPU <-> GPU copies"""
+        return _swigfaiss.GpuResources_getAsyncCopyStream(self, device)
+
+    def getBlasHandleCurrentDevice(self):
+        r"""
+        Functions provided by default
+
+        Calls getBlasHandle with the current device
+        """
+        return _swigfaiss.GpuResources_getBlasHandleCurrentDevice(self)
+
+    def getDefaultStreamCurrentDevice(self):
+        r""" Calls getDefaultStream with the current device"""
+        return _swigfaiss.GpuResources_getDefaultStreamCurrentDevice(self)
+
+    def getTempMemoryAvailableCurrentDevice(self):
+        r""" Calls getTempMemoryAvailable with the current device"""
+        return _swigfaiss.GpuResources_getTempMemoryAvailableCurrentDevice(self)
+
+    def syncDefaultStream(self, device):
+        r"""
+        Synchronizes the CPU with respect to the default stream for the
+        given device
+        """
+        return _swigfaiss.GpuResources_syncDefaultStream(self, device)
+
+    def syncDefaultStreamCurrentDevice(self):
+        r""" Calls syncDefaultStream for the current device"""
+        return _swigfaiss.GpuResources_syncDefaultStreamCurrentDevice(self)
+
+    def getAlternateStreamsCurrentDevice(self):
+        r""" Calls getAlternateStreams for the current device"""
+        return _swigfaiss.GpuResources_getAlternateStreamsCurrentDevice(self)
+
+    def getAsyncCopyStreamCurrentDevice(self):
+        r""" Calls getAsyncCopyStream for the current device"""
+        return _swigfaiss.GpuResources_getAsyncCopyStreamCurrentDevice(self)
+
+# Register GpuResources in _swigfaiss:
+_swigfaiss.GpuResources_swigregister(GpuResources)
+
+class GpuResourcesProvider(object):
+    r""" Interface for a provider of a shared resources object"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    __swig_destroy__ = _swigfaiss.delete_GpuResourcesProvider
+
+    def getResources(self):
+        r""" Returns the shared resources object"""
+        return _swigfaiss.GpuResourcesProvider_getResources(self)
+
+# Register GpuResourcesProvider in _swigfaiss:
+_swigfaiss.GpuResourcesProvider_swigregister(GpuResourcesProvider)
+
+class StandardGpuResourcesImpl(GpuResources):
+    r"""
+    Standard implementation of the GpuResources object that provides for a
+    temporary memory manager
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.StandardGpuResourcesImpl_swiginit(self, _swigfaiss.new_StandardGpuResourcesImpl())
+    __swig_destroy__ = _swigfaiss.delete_StandardGpuResourcesImpl
+
+    def noTempMemory(self):
+        r"""
+        Disable allocation of temporary memory; all temporary memory
+        requests will call hipMalloc / hipFree at the point of use
+        """
+        return _swigfaiss.StandardGpuResourcesImpl_noTempMemory(self)
+
+    def setTempMemory(self, size):
+        r"""
+        Specify that we wish to use a certain fixed size of memory on
+        all devices as temporary memory. This is the upper bound for the GPU
+        memory that we will reserve. We will never go above 1.5 GiB on any GPU;
+        smaller GPUs (with <= 4 GiB or <= 8 GiB) will use less memory than that.
+        To avoid any temporary memory allocation, pass 0.
+        """
+        return _swigfaiss.StandardGpuResourcesImpl_setTempMemory(self, size)
+
+    def setPinnedMemory(self, size):
+        r"""
+        Set amount of pinned memory to allocate, for async GPU <-> CPU
+        transfers
+        """
+        return _swigfaiss.StandardGpuResourcesImpl_setPinnedMemory(self, size)
+
+    def setDefaultStream(self, device, stream):
+        r"""
+        Called to change the stream for work ordering. We do not own `stream`;
+        i.e., it will not be destroyed when the GpuResources object gets cleaned
+        up.
+        We are guaranteed that all Faiss GPU work is ordered with respect to
+        this stream upon exit from an index or other Faiss GPU call.
+        """
+        return _swigfaiss.StandardGpuResourcesImpl_setDefaultStream(self, device, stream)
+
+    def revertDefaultStream(self, device):
+        r"""
+        Revert the default stream to the original stream managed by this
+        resources object, in case someone called `setDefaultStream`.
+        """
+        return _swigfaiss.StandardGpuResourcesImpl_revertDefaultStream(self, device)
+
+    def getDefaultStream(self, device):
+        r"""
+        Returns the stream for the given device on which all Faiss GPU work is
+        ordered.
+        We are guaranteed that all Faiss GPU work is ordered with respect to
+        this stream upon exit from an index or other Faiss GPU call.
+        """
+        return _swigfaiss.StandardGpuResourcesImpl_getDefaultStream(self, device)
+
+    def setDefaultNullStreamAllDevices(self):
+        r"""
+        Called to change the work ordering streams to the null stream
+        for all devices
+        """
+        return _swigfaiss.StandardGpuResourcesImpl_setDefaultNullStreamAllDevices(self)
+
+    def setLogMemoryAllocations(self, enable):
+        r"""
+        If enabled, will print every GPU memory allocation and deallocation to
+        standard output
+        """
+        return _swigfaiss.StandardGpuResourcesImpl_setLogMemoryAllocations(self, enable)
+
+    def initializeForDevice(self, device):
+        r"""
+        Internal system calls
+        Initialize resources for this device
+        """
+        return _swigfaiss.StandardGpuResourcesImpl_initializeForDevice(self, device)
+
+    def getBlasHandle(self, device):
+        return _swigfaiss.StandardGpuResourcesImpl_getBlasHandle(self, device)
+
+    def getAlternateStreams(self, device):
+        return _swigfaiss.StandardGpuResourcesImpl_getAlternateStreams(self, device)
+
+    def allocMemory(self, req):
+        r""" Allocate non-temporary GPU memory"""
+        return _swigfaiss.StandardGpuResourcesImpl_allocMemory(self, req)
+
+    def deallocMemory(self, device, _in):
+        r""" Returns a previous allocation"""
+        return _swigfaiss.StandardGpuResourcesImpl_deallocMemory(self, device, _in)
+
+    def getTempMemoryAvailable(self, device):
+        return _swigfaiss.StandardGpuResourcesImpl_getTempMemoryAvailable(self, device)
+
+    def getMemoryInfo(self):
+        r""" Export a description of memory used for Python"""
+        return _swigfaiss.StandardGpuResourcesImpl_getMemoryInfo(self)
+
+    def getPinnedMemory(self):
+        return _swigfaiss.StandardGpuResourcesImpl_getPinnedMemory(self)
+
+    def getAsyncCopyStream(self, device):
+        return _swigfaiss.StandardGpuResourcesImpl_getAsyncCopyStream(self, device)
+
+# Register StandardGpuResourcesImpl in _swigfaiss:
+_swigfaiss.StandardGpuResourcesImpl_swigregister(StandardGpuResourcesImpl)
+
+class StandardGpuResources(GpuResourcesProvider):
+    r"""
+    Default implementation of GpuResources that allocates a cuBLAS
+    stream and 2 streams for use, as well as temporary memory.
+    Internally, the Faiss GPU code uses the instance managed by getResources,
+    but this is the user-facing object that is internally reference counted.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.StandardGpuResources_swiginit(self, _swigfaiss.new_StandardGpuResources())
+    __swig_destroy__ = _swigfaiss.delete_StandardGpuResources
+
+    def getResources(self):
+        return _swigfaiss.StandardGpuResources_getResources(self)
+
+    def noTempMemory(self):
+        r"""
+        Disable allocation of temporary memory; all temporary memory
+        requests will call hipMalloc / hipFree at the point of use
+        """
+        return _swigfaiss.StandardGpuResources_noTempMemory(self)
+
+    def setTempMemory(self, size):
+        r"""
+        Specify that we wish to use a certain fixed size of memory on
+        all devices as temporary memory. This is the upper bound for the GPU
+        memory that we will reserve. We will never go above 1.5 GiB on any GPU;
+        smaller GPUs (with <= 4 GiB or <= 8 GiB) will use less memory than that.
+        To avoid any temporary memory allocation, pass 0.
+        """
+        return _swigfaiss.StandardGpuResources_setTempMemory(self, size)
+
+    def setPinnedMemory(self, size):
+        r"""
+        Set amount of pinned memory to allocate, for async GPU <-> CPU
+        transfers
+        """
+        return _swigfaiss.StandardGpuResources_setPinnedMemory(self, size)
+
+    def setDefaultStream(self, device, stream):
+        r"""
+        Called to change the stream for work ordering. We do not own `stream`;
+        i.e., it will not be destroyed when the GpuResources object gets cleaned
+        up.
+        We are guaranteed that all Faiss GPU work is ordered with respect to
+        this stream upon exit from an index or other Faiss GPU call.
+        """
+        return _swigfaiss.StandardGpuResources_setDefaultStream(self, device, stream)
+
+    def revertDefaultStream(self, device):
+        r"""
+        Revert the default stream to the original stream managed by this
+        resources object, in case someone called `setDefaultStream`.
+        """
+        return _swigfaiss.StandardGpuResources_revertDefaultStream(self, device)
+
+    def setDefaultNullStreamAllDevices(self):
+        r"""
+        Called to change the work ordering streams to the null stream
+        for all devices
+        """
+        return _swigfaiss.StandardGpuResources_setDefaultNullStreamAllDevices(self)
+
+    def getMemoryInfo(self):
+        r""" Export a description of memory used for Python"""
+        return _swigfaiss.StandardGpuResources_getMemoryInfo(self)
+
+    def getDefaultStream(self, device):
+        r""" Returns the current default stream"""
+        return _swigfaiss.StandardGpuResources_getDefaultStream(self, device)
+
+    def getTempMemoryAvailable(self, device):
+        r""" Returns the current amount of temp memory available"""
+        return _swigfaiss.StandardGpuResources_getTempMemoryAvailable(self, device)
+
+    def syncDefaultStreamCurrentDevice(self):
+        r""" Synchronize our default stream with the CPU"""
+        return _swigfaiss.StandardGpuResources_syncDefaultStreamCurrentDevice(self)
+
+    def setLogMemoryAllocations(self, enable):
+        r"""
+        If enabled, will print every GPU memory allocation and deallocation to
+        standard output
+        """
+        return _swigfaiss.StandardGpuResources_setLogMemoryAllocations(self, enable)
+
+# Register StandardGpuResources in _swigfaiss:
+_swigfaiss.StandardGpuResources_swigregister(StandardGpuResources)
+
+
+def cast_integer_to_cudastream_t(x):
+    return _swigfaiss.cast_integer_to_cudastream_t(x)
+
+def cast_cudastream_t_to_integer(x):
+    return _swigfaiss.cast_cudastream_t_to_integer(x)
+
+def get_compile_options():
+    r""" get compile options"""
+    return _swigfaiss.get_compile_options()
+
+def getmillisecs():
+    r""" ms elapsed since some arbitrary epoch"""
+    return _swigfaiss.getmillisecs()
+
+def get_mem_usage_kb():
+    r""" get current RSS usage in kB"""
+    return _swigfaiss.get_mem_usage_kb()
+
+def get_cycles():
+    return _swigfaiss.get_cycles()
+
+def fvec_madd(n, a, bf, b, c):
+    r"""
+     compute c := a + bf * b for a, b and c tables
+
+    :type n: int
+    :param n:   size of the tables
+    :type a: float
+    :param a:   size n
+    :type b: float
+    :param b:   size n
+    :type c: float
+    :param c:   restult table, size n
+    """
+    return _swigfaiss.fvec_madd(n, a, bf, b, c)
+
+def fvec_madd_and_argmin(n, a, bf, b, c):
+    r"""
+     same as fvec_madd, also return index of the min of the result table
+    :rtype: int
+    :return: index of the min of table c
+    """
+    return _swigfaiss.fvec_madd_and_argmin(n, a, bf, b, c)
+
+def reflection(u, x, n, d, nu):
+    return _swigfaiss.reflection(u, x, n, d, nu)
+
+def matrix_qr(m, n, a):
+    r"""
+     compute the Q of the QR decomposition for m > n
+    :type a: float
+    :param a:   size n * m: input matrix and output Q
+    """
+    return _swigfaiss.matrix_qr(m, n, a)
+
+def ranklist_handle_ties(k, idx, dis):
+    r""" distances are supposed to be sorted. Sorts indices with same distance"""
+    return _swigfaiss.ranklist_handle_ties(k, idx, dis)
+
+def ranklist_intersection_size(k1, v1, k2, v2):
+    r"""
+     count the number of common elements between v1 and v2
+    algorithm = sorting + bissection to avoid double-counting duplicates
+    """
+    return _swigfaiss.ranklist_intersection_size(k1, v1, k2, v2)
+
+def merge_result_table_with(n, k, I0, D0, I1, D1, keep_min=True, translation=0):
+    r"""
+     merge a result table into another one
+
+    :type I0: int
+    :param I0:, D0       first result table, size (n, k)
+    :type I1: int
+    :param I1:, D1       second result table, size (n, k)
+    :type keep_min: boolean, optional
+    :param keep_min:     if true, keep min values, otherwise keep max
+    :type translation: int, optional
+    :param translation:  add this value to all I1's indexes
+    :rtype: int
+    :return: nb of values that were taken from the second table
+    """
+    return _swigfaiss.merge_result_table_with(n, k, I0, D0, I1, D1, keep_min, translation)
+
+def imbalance_factor(*args):
+    r"""
+    *Overload 1:*
+    a balanced assignment has a IF of 1
+
+    |
+
+    *Overload 2:*
+    same, takes a histogram as input
+    """
+    return _swigfaiss.imbalance_factor(*args)
+
+def fvec_argsort(n, vals, perm):
+    return _swigfaiss.fvec_argsort(n, vals, perm)
+
+def fvec_argsort_parallel(n, vals, perm):
+    return _swigfaiss.fvec_argsort_parallel(n, vals, perm)
+
+def ivec_hist(n, v, vmax, hist):
+    r""" compute histogram on v"""
+    return _swigfaiss.ivec_hist(n, v, vmax, hist)
+
+def bincode_hist(n, nbits, codes, hist):
+    r"""
+     Compute histogram of bits on a code array
+
+    :type codes: uint8_t
+    :param codes:   size(n, nbits / 8)
+    :type hist: int
+    :param hist:    size(nbits): nb of 1s in the array of codes
+    """
+    return _swigfaiss.bincode_hist(n, nbits, codes, hist)
+
+def ivec_checksum(n, a):
+    r""" compute a checksum on a table."""
+    return _swigfaiss.ivec_checksum(n, a)
+
+def fvecs_maybe_subsample(d, n, nmax, x, verbose=False, seed=1234):
+    r"""
+     random subsamples a set of vectors if there are too many of them
+
+    :type d: int
+    :param d:      dimension of the vectors
+    :type n: int
+    :param n:      on input: nb of input vectors, output: nb of output vectors
+    :type nmax: int
+    :param nmax:   max nb of vectors to keep
+    :type x: float
+    :param x:      input array, size *n-by-d
+    :type seed: int, optional
+    :param seed:   random seed to use for sampling
+    :rtype: float
+    :return: x or an array allocated with new [] with *n vectors
+    """
+    return _swigfaiss.fvecs_maybe_subsample(d, n, nmax, x, verbose, seed)
+
+def binary_to_real(d, x_in, x_out):
+    r"""
+     Convert binary vector to +1/-1 valued float vector.
+
+    :type d: int
+    :param d:      dimension of the vector (multiple of 8)
+    :type x_in: uint8_t
+    :param x_in:   input binary vector (uint8_t table of size d / 8)
+    :type x_out: float
+    :param x_out:  output float vector (float table of size d)
+    """
+    return _swigfaiss.binary_to_real(d, x_in, x_out)
+
+def real_to_binary(d, x_in, x_out):
+    r"""
+     Convert float vector to binary vector. Components > 0 are converted to 1,
+    others to 0.
+
+    :type d: int
+    :param d:      dimension of the vector (multiple of 8)
+    :type x_in: float
+    :param x_in:   input float vector (float table of size d)
+    :type x_out: uint8_t
+    :param x_out:  output binary vector (uint8_t table of size d / 8)
+    """
+    return _swigfaiss.real_to_binary(d, x_in, x_out)
+
+def hash_bytes(bytes, n):
+    r""" A reasonable hashing function"""
+    return _swigfaiss.hash_bytes(bytes, n)
+
+def check_openmp():
+    r""" Whether OpenMP annotations were respected."""
+    return _swigfaiss.check_openmp()
+
+def fvec_L2sqr(x, y, d):
+    r""" Squared L2 distance between two vectors"""
+    return _swigfaiss.fvec_L2sqr(x, y, d)
+
+def fvec_inner_product(x, y, d):
+    r""" inner product"""
+    return _swigfaiss.fvec_inner_product(x, y, d)
+
+def fvec_L1(x, y, d):
+    r""" L1 distance"""
+    return _swigfaiss.fvec_L1(x, y, d)
+
+def fvec_Linf(x, y, d):
+    r""" infinity distance"""
+    return _swigfaiss.fvec_Linf(x, y, d)
+
+def pairwise_L2sqr(d, nq, xq, nb, xb, dis, ldq=-1, ldb=-1, ldd=-1):
+    r"""
+     Compute pairwise distances between sets of vectors
+
+    :type d: int
+    :param d:     dimension of the vectors
+    :type nq: int
+    :param nq:    nb of query vectors
+    :type nb: int
+    :param nb:    nb of database vectors
+    :type xq: float
+    :param xq:    query vectors (size nq * d)
+    :type xb: float
+    :param xb:    database vectors (size nb * d)
+    :type dis: float
+    :param dis:   output distances (size nq * nb)
+    :param ldq,ldb:, ldd strides for the matrices
+    """
+    return _swigfaiss.pairwise_L2sqr(d, nq, xq, nb, xb, dis, ldq, ldb, ldd)
+
+def fvec_inner_products_ny(ip, x, y, d, ny):
+    return _swigfaiss.fvec_inner_products_ny(ip, x, y, d, ny)
+
+def fvec_L2sqr_ny(dis, x, y, d, ny):
+    return _swigfaiss.fvec_L2sqr_ny(dis, x, y, d, ny)
+
+def fvec_norm_L2sqr(x, d):
+    r""" squared norm of a vector"""
+    return _swigfaiss.fvec_norm_L2sqr(x, d)
+
+def fvec_norms_L2(norms, x, d, nx):
+    r"""
+     compute the L2 norms for a set of vectors
+
+    :type norms: float
+    :param norms:    output norms, size nx
+    :type x: float
+    :param x:        set of vectors, size nx * d
+    """
+    return _swigfaiss.fvec_norms_L2(norms, x, d, nx)
+
+def fvec_norms_L2sqr(norms, x, d, nx):
+    r""" same as fvec_norms_L2, but computes squared norms"""
+    return _swigfaiss.fvec_norms_L2sqr(norms, x, d, nx)
+
+def fvec_renorm_L2(d, nx, x):
+    return _swigfaiss.fvec_renorm_L2(d, nx, x)
+
+def inner_product_to_L2sqr(dis, nr1, nr2, n1, n2):
+    return _swigfaiss.inner_product_to_L2sqr(dis, nr1, nr2, n1, n2)
+
+def fvec_add(*args):
+    r"""
+    *Overload 1:*
+     compute c := a + b for vectors
+
+    c and a can overlap, c and b can overlap
+
+    :type a: float
+    :param a: size d
+    :type b: float
+    :param b: size d
+    :type c: float
+    :param c: size d
+
+    |
+
+    *Overload 2:*
+     compute c := a + b for a, c vectors and b a scalar
+
+    c and a can overlap
+
+    :type a: float
+    :param a: size d
+    :type c: float
+    :param c: size d
+    """
+    return _swigfaiss.fvec_add(*args)
+
+def fvec_sub(d, a, b, c):
+    r"""
+     compute c := a - b for vectors
+
+    c and a can overlap, c and b can overlap
+
+    :type a: float
+    :param a: size d
+    :type b: float
+    :param b: size d
+    :type c: float
+    :param c: size d
+    """
+    return _swigfaiss.fvec_sub(d, a, b, c)
+
+def fvec_inner_products_by_idx(ip, x, y, ids, d, nx, ny):
+    return _swigfaiss.fvec_inner_products_by_idx(ip, x, y, ids, d, nx, ny)
+
+def fvec_L2sqr_by_idx(dis, x, y, ids, d, nx, ny):
+    return _swigfaiss.fvec_L2sqr_by_idx(dis, x, y, ids, d, nx, ny)
+
+def pairwise_indexed_L2sqr(d, n, x, ix, y, iy, dis):
+    r"""
+     compute dis[j] = L2sqr(x[ix[j]], y[iy[j]]) forall j=0..n-1
+
+    :type x: float
+    :param x:  size (max(ix) + 1, d)
+    :type y: float
+    :param y:  size (max(iy) + 1, d)
+    :type ix: int
+    :param ix: size n
+    :type iy: int
+    :param iy: size n
+    :type dis: float
+    :param dis: size n
+    """
+    return _swigfaiss.pairwise_indexed_L2sqr(d, n, x, ix, y, iy, dis)
+
+def pairwise_indexed_inner_product(d, n, x, ix, y, iy, dis):
+    return _swigfaiss.pairwise_indexed_inner_product(d, n, x, ix, y, iy, dis)
+
+def knn_inner_product(x, y, d, nx, ny, res):
+    r"""
+     Return the k nearest neighors of each of the nx vectors x among the ny
+     vector y, w.r.t to max inner product
+
+    :type x: float
+    :param x:    query vectors, size nx * d
+    :type y: float
+    :param y:    database vectors, size ny * d
+    :type res: :py:class:`float_minheap_array_t`
+    :param res:  result array, which also provides k. Sorted on output
+    """
+    return _swigfaiss.knn_inner_product(x, y, d, nx, ny, res)
+
+def knn_L2sqr(x, y, d, nx, ny, res, y_norm2=None):
+    r"""
+    Same as knn_inner_product, for the L2 distance
+    :type y_norm2: float, optional
+    :param y_norm2:    norms for the y vectors (nullptr or size ny)
+    """
+    return _swigfaiss.knn_L2sqr(x, y, d, nx, ny, res, y_norm2)
+
+def knn_inner_products_by_idx(x, y, ids, d, nx, ny, res):
+    return _swigfaiss.knn_inner_products_by_idx(x, y, ids, d, nx, ny, res)
+
+def knn_L2sqr_by_idx(x, y, ids, d, nx, ny, res):
+    return _swigfaiss.knn_L2sqr_by_idx(x, y, ids, d, nx, ny, res)
+
+def range_search_L2sqr(x, y, d, nx, ny, radius, result):
+    r"""
+     Return the k nearest neighors of each of the nx vectors x among the ny
+     vector y, w.r.t to max inner product
+
+    :type x: float
+    :param x:      query vectors, size nx * d
+    :type y: float
+    :param y:      database vectors, size ny * d
+    :type radius: float
+    :param radius: search radius around the x vectors
+    :type result: :py:class:`RangeSearchResult`
+    :param result: result structure
+    """
+    return _swigfaiss.range_search_L2sqr(x, y, d, nx, ny, radius, result)
+
+def range_search_inner_product(x, y, d, nx, ny, radius, result):
+    r""" same as range_search_L2sqr for the inner product similarity"""
+    return _swigfaiss.range_search_inner_product(x, y, d, nx, ny, radius, result)
+
+def compute_PQ_dis_tables_dsub2(d, ksub, centroids, nx, x, is_inner_product, dis_tables):
+    r""" specialized function for PQ2"""
+    return _swigfaiss.compute_PQ_dis_tables_dsub2(d, ksub, centroids, nx, x, is_inner_product, dis_tables)
+class RandomGenerator(object):
+    r""" random generator that can be used in multithreaded contexts"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    mt = property(_swigfaiss.RandomGenerator_mt_get, _swigfaiss.RandomGenerator_mt_set)
+
+    def rand_int64(self):
+        r""" random int64_t"""
+        return _swigfaiss.RandomGenerator_rand_int64(self)
+
+    def rand_int(self, *args):
+        r"""
+        *Overload 1:*
+        random positive integer
+
+        |
+
+        *Overload 2:*
+        generate random integer between 0 and max-1
+        """
+        return _swigfaiss.RandomGenerator_rand_int(self, *args)
+
+    def rand_float(self):
+        r""" between 0 and 1"""
+        return _swigfaiss.RandomGenerator_rand_float(self)
+
+    def rand_double(self):
+        return _swigfaiss.RandomGenerator_rand_double(self)
+
+    def __init__(self, seed=1234):
+        _swigfaiss.RandomGenerator_swiginit(self, _swigfaiss.new_RandomGenerator(seed))
+    __swig_destroy__ = _swigfaiss.delete_RandomGenerator
+
+# Register RandomGenerator in _swigfaiss:
+_swigfaiss.RandomGenerator_swigregister(RandomGenerator)
+
+
+def float_rand(x, n, seed):
+    return _swigfaiss.float_rand(x, n, seed)
+
+def float_randn(x, n, seed):
+    return _swigfaiss.float_randn(x, n, seed)
+
+def int64_rand(x, n, seed):
+    return _swigfaiss.int64_rand(x, n, seed)
+
+def byte_rand(x, n, seed):
+    return _swigfaiss.byte_rand(x, n, seed)
+
+def int64_rand_max(x, n, max, seed):
+    return _swigfaiss.int64_rand_max(x, n, max, seed)
+
+def rand_perm(perm, n, seed):
+    return _swigfaiss.rand_perm(perm, n, seed)
+METRIC_INNER_PRODUCT = _swigfaiss.METRIC_INNER_PRODUCT
+r""" maximum inner product search"""
+METRIC_L2 = _swigfaiss.METRIC_L2
+r""" squared L2 search"""
+METRIC_L1 = _swigfaiss.METRIC_L1
+r""" L1 (aka cityblock)"""
+METRIC_Linf = _swigfaiss.METRIC_Linf
+r""" infinity distance"""
+METRIC_Lp = _swigfaiss.METRIC_Lp
+r""" L_p distance, p is given by a faiss::Index"""
+METRIC_Canberra = _swigfaiss.METRIC_Canberra
+r"""
+    metric_arg
+    some additional metrics defined in scipy.spatial.distance
+    """
+METRIC_BrayCurtis = _swigfaiss.METRIC_BrayCurtis
+METRIC_JensenShannon = _swigfaiss.METRIC_JensenShannon
+FAISS_VERSION_MAJOR = _swigfaiss.FAISS_VERSION_MAJOR
+r"""
+    Copyright (c) Facebook, Inc. and its affiliates.
+
+    This source code is licensed under the MIT license found in the
+    LICENSE file in the root directory of this source tree.
+    """
+FAISS_VERSION_MINOR = _swigfaiss.FAISS_VERSION_MINOR
+FAISS_VERSION_PATCH = _swigfaiss.FAISS_VERSION_PATCH
+class Index(object):
+    r"""
+     Abstract structure for an index, supports adding vectors and searching them.
+
+    All vectors provided at add or search time are 32-bit float arrays,
+    although the internal representation may vary.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    d = property(_swigfaiss.Index_d_get, _swigfaiss.Index_d_set, doc=r""" vector dimension""")
+    ntotal = property(_swigfaiss.Index_ntotal_get, _swigfaiss.Index_ntotal_set, doc=r""" total nb of indexed vectors""")
+    verbose = property(_swigfaiss.Index_verbose_get, _swigfaiss.Index_verbose_set, doc=r""" verbosity level""")
+    is_trained = property(_swigfaiss.Index_is_trained_get, _swigfaiss.Index_is_trained_set, doc=r"""
+    set if the Index does not require training, or if training is
+    done already
+    """)
+    metric_type = property(_swigfaiss.Index_metric_type_get, _swigfaiss.Index_metric_type_set, doc=r""" type of metric this index uses for search""")
+    metric_arg = property(_swigfaiss.Index_metric_arg_get, _swigfaiss.Index_metric_arg_set, doc=r""" argument of the metric type""")
+    __swig_destroy__ = _swigfaiss.delete_Index
+
+    def train(self, n, x):
+        r"""
+         Perform training on a representative set of vectors
+
+        :type n: int
+        :param n:      nb of training vectors
+        :type x: float
+        :param x:      training vecors, size n * d
+        """
+        return _swigfaiss.Index_train(self, n, x)
+
+    def add(self, n, x):
+        r"""
+         Add n vectors of dimension d to the index.
+
+        Vectors are implicitly assigned labels ntotal .. ntotal + n - 1
+        This function slices the input vectors in chunks smaller than
+        blocksize_add and calls add_core.
+        :type x: float
+        :param x:      input matrix, size n * d
+        """
+        return _swigfaiss.Index_add(self, n, x)
+
+    def add_with_ids(self, n, x, xids):
+        r"""
+         Same as add, but stores xids instead of sequential ids.
+
+        The default implementation fails with an assertion, as it is
+        not supported by all indexes.
+
+        :type xids: int
+        :param xids: if non-null, ids to store for the vectors (size n)
+        """
+        return _swigfaiss.Index_add_with_ids(self, n, x, xids)
+
+    def search(self, n, x, k, distances, labels):
+        r"""
+         query n vectors of dimension d to the index.
+
+        return at most k vectors. If there are not enough results for a
+        query, the result array is padded with -1s.
+
+        :type x: float
+        :param x:           input vectors to search, size n * d
+        :type labels: int
+        :param labels:      output labels of the NNs, size n*k
+        :type distances: float
+        :param distances:   output pairwise distances, size n*k
+        """
+        return _swigfaiss.Index_search(self, n, x, k, distances, labels)
+
+    def range_search(self, n, x, radius, result):
+        r"""
+         query n vectors of dimension d to the index.
+
+        return all vectors with distance < radius. Note that many
+        indexes do not implement the range_search (only the k-NN search
+        is mandatory).
+
+        :type x: float
+        :param x:           input vectors to search, size n * d
+        :type radius: float
+        :param radius:      search radius
+        :type result: :py:class:`RangeSearchResult`
+        :param result:      result table
+        """
+        return _swigfaiss.Index_range_search(self, n, x, radius, result)
+
+    def assign(self, n, x, labels, k=1):
+        r"""
+         return the indexes of the k vectors closest to the query x.
+
+        This function is identical as search but only return labels of neighbors.
+        :type x: float
+        :param x:           input vectors to search, size n * d
+        :type labels: int
+        :param labels:      output labels of the NNs, size n*k
+        """
+        return _swigfaiss.Index_assign(self, n, x, labels, k)
+
+    def reset(self):
+        r""" removes all elements from the database."""
+        return _swigfaiss.Index_reset(self)
+
+    def remove_ids(self, sel):
+        r"""
+         removes IDs from the index. Not supported by all
+        indexes. Returns the number of elements removed.
+        """
+        return _swigfaiss.Index_remove_ids(self, sel)
+
+    def reconstruct(self, key, recons):
+        r"""
+         Reconstruct a stored vector (or an approximation if lossy coding)
+
+        this function may not be defined for some indexes
+        :type key: int
+        :param key:         id of the vector to reconstruct
+        :type recons: float
+        :param recons:      reconstucted vector (size d)
+        """
+        return _swigfaiss.Index_reconstruct(self, key, recons)
+
+    def reconstruct_n(self, i0, ni, recons):
+        r"""
+         Reconstruct vectors i0 to i0 + ni - 1
+
+        this function may not be defined for some indexes
+        :type recons: float
+        :param recons:      reconstucted vector (size ni * d)
+        """
+        return _swigfaiss.Index_reconstruct_n(self, i0, ni, recons)
+
+    def search_and_reconstruct(self, n, x, k, distances, labels, recons):
+        r"""
+         Similar to search, but also reconstructs the stored vectors (or an
+        approximation in the case of lossy coding) for the search results.
+
+        If there are not enough results for a query, the resulting arrays
+        is padded with -1s.
+
+        :type recons: float
+        :param recons:      reconstructed vectors size (n, k, d)
+        """
+        return _swigfaiss.Index_search_and_reconstruct(self, n, x, k, distances, labels, recons)
+
+    def compute_residual(self, x, residual, key):
+        r"""
+         Computes a residual vector after indexing encoding.
+
+        The residual vector is the difference between a vector and the
+        reconstruction that can be decoded from its representation in
+        the index. The residual can be used for multiple-stage indexing
+        methods, like IndexIVF's methods.
+
+        :type x: float
+        :param x:           input vector, size d
+        :type residual: float
+        :param residual:    output residual vector, size d
+        :type key: int
+        :param key:         encoded index, as returned by search and assign
+        """
+        return _swigfaiss.Index_compute_residual(self, x, residual, key)
+
+    def compute_residual_n(self, n, xs, residuals, keys):
+        r"""
+         Computes a residual vector after indexing encoding (batch form).
+        Equivalent to calling compute_residual for each vector.
+
+        The residual vector is the difference between a vector and the
+        reconstruction that can be decoded from its representation in
+        the index. The residual can be used for multiple-stage indexing
+        methods, like IndexIVF's methods.
+
+        :type n: int
+        :param n:           number of vectors
+        :type xs: float
+        :param xs:          input vectors, size (n x d)
+        :type residuals: float
+        :param residuals:   output residual vectors, size (n x d)
+        :type keys: int
+        :param keys:        encoded index, as returned by search and assign
+        """
+        return _swigfaiss.Index_compute_residual_n(self, n, xs, residuals, keys)
+
+    def get_distance_computer(self):
+        r"""
+         Get a DistanceComputer (defined in AuxIndexStructures) object
+        for this kind of index.
+
+        DistanceComputer is implemented for indexes that support random
+        access of their vectors.
+        """
+        return _swigfaiss.Index_get_distance_computer(self)
+
+    def sa_code_size(self):
+        r""" size of the produced codes in bytes"""
+        return _swigfaiss.Index_sa_code_size(self)
+
+    def sa_encode(self, n, x, bytes):
+        r"""
+         encode a set of vectors
+
+        :type n: int
+        :param n:       number of vectors
+        :type x: float
+        :param x:       input vectors, size n * d
+        :type bytes: uint8_t
+        :param bytes:   output encoded vectors, size n * sa_code_size()
+        """
+        return _swigfaiss.Index_sa_encode(self, n, x, bytes)
+
+    def sa_decode(self, n, bytes, x):
+        r"""
+         encode a set of vectors
+
+        :type n: int
+        :param n:       number of vectors
+        :type bytes: uint8_t
+        :param bytes:   input encoded vectors, size n * sa_code_size()
+        :type x: float
+        :param x:       output vectors, size n * d
+        """
+        return _swigfaiss.Index_sa_decode(self, n, bytes, x)
+
+# Register Index in _swigfaiss:
+_swigfaiss.Index_swigregister(Index)
+
+class IndexFlatCodes(Index):
+    r"""
+     Index that encodes all vectors as fixed-size codes (size code_size). Storage
+    is in the codes vector
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    code_size = property(_swigfaiss.IndexFlatCodes_code_size_get, _swigfaiss.IndexFlatCodes_code_size_set)
+    codes = property(_swigfaiss.IndexFlatCodes_codes_get, _swigfaiss.IndexFlatCodes_codes_set, doc=r""" encoded dataset, size ntotal * code_size""")
+
+    def add(self, n, x):
+        r""" default add uses sa_encode"""
+        return _swigfaiss.IndexFlatCodes_add(self, n, x)
+
+    def reset(self):
+        return _swigfaiss.IndexFlatCodes_reset(self)
+
+    def reconstruct_n(self, i0, ni, recons):
+        r""" reconstruction using the codec interface"""
+        return _swigfaiss.IndexFlatCodes_reconstruct_n(self, i0, ni, recons)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.IndexFlatCodes_reconstruct(self, key, recons)
+
+    def sa_code_size(self):
+        return _swigfaiss.IndexFlatCodes_sa_code_size(self)
+
+    def remove_ids(self, sel):
+        r"""
+         remove some ids. NB that Because of the structure of the
+        indexing structure, the semantics of this operation are
+        different from the usual ones: the new ids are shifted
+        """
+        return _swigfaiss.IndexFlatCodes_remove_ids(self, sel)
+    __swig_destroy__ = _swigfaiss.delete_IndexFlatCodes
+
+# Register IndexFlatCodes in _swigfaiss:
+_swigfaiss.IndexFlatCodes_swigregister(IndexFlatCodes)
+
+class IndexFlat(IndexFlatCodes):
+    r""" Index that stores the full vectors and performs exhaustive search"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexFlat_search(self, n, x, k, distances, labels)
+
+    def range_search(self, n, x, radius, result):
+        return _swigfaiss.IndexFlat_range_search(self, n, x, radius, result)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.IndexFlat_reconstruct(self, key, recons)
+
+    def compute_distance_subset(self, n, x, k, distances, labels):
+        r"""
+         compute distance with a subset of vectors
+
+        :type x: float
+        :param x:       query vectors, size n * d
+        :type labels: int
+        :param labels:  indices of the vectors that should be compared
+                           for each query vector, size n * k
+        :type distances: float
+        :param distances:
+                           corresponding output distances, size n * k
+        """
+        return _swigfaiss.IndexFlat_compute_distance_subset(self, n, x, k, distances, labels)
+
+    def get_xb(self, *args):
+        return _swigfaiss.IndexFlat_get_xb(self, *args)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexFlat_swiginit(self, _swigfaiss.new_IndexFlat(*args))
+
+    def get_distance_computer(self):
+        return _swigfaiss.IndexFlat_get_distance_computer(self)
+
+    def sa_encode(self, n, x, bytes):
+        return _swigfaiss.IndexFlat_sa_encode(self, n, x, bytes)
+
+    def sa_decode(self, n, bytes, x):
+        return _swigfaiss.IndexFlat_sa_decode(self, n, bytes, x)
+    __swig_destroy__ = _swigfaiss.delete_IndexFlat
+
+# Register IndexFlat in _swigfaiss:
+_swigfaiss.IndexFlat_swigregister(IndexFlat)
+
+class IndexFlatIP(IndexFlat):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.IndexFlatIP_swiginit(self, _swigfaiss.new_IndexFlatIP(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexFlatIP
+
+# Register IndexFlatIP in _swigfaiss:
+_swigfaiss.IndexFlatIP_swigregister(IndexFlatIP)
+
+class IndexFlatL2(IndexFlat):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.IndexFlatL2_swiginit(self, _swigfaiss.new_IndexFlatL2(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexFlatL2
+
+# Register IndexFlatL2 in _swigfaiss:
+_swigfaiss.IndexFlatL2_swigregister(IndexFlatL2)
+
+class IndexFlat1D(IndexFlatL2):
+    r""" optimized version for 1D "vectors"."""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    continuous_update = property(_swigfaiss.IndexFlat1D_continuous_update_get, _swigfaiss.IndexFlat1D_continuous_update_set, doc=r""" is the permutation updated continuously?""")
+    perm = property(_swigfaiss.IndexFlat1D_perm_get, _swigfaiss.IndexFlat1D_perm_set, doc=r""" sorted database indices""")
+
+    def __init__(self, continuous_update=True):
+        _swigfaiss.IndexFlat1D_swiginit(self, _swigfaiss.new_IndexFlat1D(continuous_update))
+
+    def update_permutation(self):
+        r"""
+        if not continuous_update, call this between the last add and
+        the first search
+        """
+        return _swigfaiss.IndexFlat1D_update_permutation(self)
+
+    def add(self, n, x):
+        return _swigfaiss.IndexFlat1D_add(self, n, x)
+
+    def reset(self):
+        return _swigfaiss.IndexFlat1D_reset(self)
+
+    def search(self, n, x, k, distances, labels):
+        r""" Warn: the distances returned are L1 not L2"""
+        return _swigfaiss.IndexFlat1D_search(self, n, x, k, distances, labels)
+    __swig_destroy__ = _swigfaiss.delete_IndexFlat1D
+
+# Register IndexFlat1D in _swigfaiss:
+_swigfaiss.IndexFlat1D_swigregister(IndexFlat1D)
+
+class ClusteringParameters(object):
+    r"""
+     Class for the clustering parameters. Can be passed to the
+    constructor of the Clustering object.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    niter = property(_swigfaiss.ClusteringParameters_niter_get, _swigfaiss.ClusteringParameters_niter_set, doc=r""" clustering iterations""")
+    nredo = property(_swigfaiss.ClusteringParameters_nredo_get, _swigfaiss.ClusteringParameters_nredo_set, doc=r""" redo clustering this many times and keep best""")
+    verbose = property(_swigfaiss.ClusteringParameters_verbose_get, _swigfaiss.ClusteringParameters_verbose_set)
+    spherical = property(_swigfaiss.ClusteringParameters_spherical_get, _swigfaiss.ClusteringParameters_spherical_set, doc=r""" do we want normalized centroids?""")
+    int_centroids = property(_swigfaiss.ClusteringParameters_int_centroids_get, _swigfaiss.ClusteringParameters_int_centroids_set, doc=r""" round centroids coordinates to integer""")
+    update_index = property(_swigfaiss.ClusteringParameters_update_index_get, _swigfaiss.ClusteringParameters_update_index_set, doc=r""" re-train index after each iteration?""")
+    frozen_centroids = property(_swigfaiss.ClusteringParameters_frozen_centroids_get, _swigfaiss.ClusteringParameters_frozen_centroids_set, doc=r"""
+    use the centroids provided as input and do not
+    change them during iterations
+    """)
+    min_points_per_centroid = property(_swigfaiss.ClusteringParameters_min_points_per_centroid_get, _swigfaiss.ClusteringParameters_min_points_per_centroid_set, doc=r""" otherwise you get a warning""")
+    max_points_per_centroid = property(_swigfaiss.ClusteringParameters_max_points_per_centroid_get, _swigfaiss.ClusteringParameters_max_points_per_centroid_set, doc=r""" to limit size of dataset""")
+    seed = property(_swigfaiss.ClusteringParameters_seed_get, _swigfaiss.ClusteringParameters_seed_set, doc=r""" seed for the random number generator""")
+    decode_block_size = property(_swigfaiss.ClusteringParameters_decode_block_size_get, _swigfaiss.ClusteringParameters_decode_block_size_set, doc=r""" how many vectors at a time to decode""")
+
+    def __init__(self):
+        r""" sets reasonable defaults"""
+        _swigfaiss.ClusteringParameters_swiginit(self, _swigfaiss.new_ClusteringParameters())
+    __swig_destroy__ = _swigfaiss.delete_ClusteringParameters
+
+# Register ClusteringParameters in _swigfaiss:
+_swigfaiss.ClusteringParameters_swigregister(ClusteringParameters)
+
+class ClusteringIterationStats(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    obj = property(_swigfaiss.ClusteringIterationStats_obj_get, _swigfaiss.ClusteringIterationStats_obj_set, doc=r""" objective values (sum of distances reported by index)""")
+    time = property(_swigfaiss.ClusteringIterationStats_time_get, _swigfaiss.ClusteringIterationStats_time_set, doc=r""" seconds for iteration""")
+    time_search = property(_swigfaiss.ClusteringIterationStats_time_search_get, _swigfaiss.ClusteringIterationStats_time_search_set, doc=r""" seconds for just search""")
+    imbalance_factor = property(_swigfaiss.ClusteringIterationStats_imbalance_factor_get, _swigfaiss.ClusteringIterationStats_imbalance_factor_set, doc=r""" imbalance factor of iteration""")
+    nsplit = property(_swigfaiss.ClusteringIterationStats_nsplit_get, _swigfaiss.ClusteringIterationStats_nsplit_set, doc=r""" number of cluster splits""")
+
+    def __init__(self):
+        _swigfaiss.ClusteringIterationStats_swiginit(self, _swigfaiss.new_ClusteringIterationStats())
+    __swig_destroy__ = _swigfaiss.delete_ClusteringIterationStats
+
+# Register ClusteringIterationStats in _swigfaiss:
+_swigfaiss.ClusteringIterationStats_swigregister(ClusteringIterationStats)
+
+class Clustering(ClusteringParameters):
+    r"""
+     K-means clustering based on assignment - centroid update iterations
+
+    The clustering is based on an Index object that assigns training
+    points to the centroids. Therefore, at each iteration the centroids
+    are added to the index.
+
+    On output, the centoids table is set to the latest version
+    of the centroids and they are also added to the index. If the
+    centroids table it is not empty on input, it is also used for
+    initialization.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    d = property(_swigfaiss.Clustering_d_get, _swigfaiss.Clustering_d_set, doc=r""" dimension of the vectors""")
+    k = property(_swigfaiss.Clustering_k_get, _swigfaiss.Clustering_k_set, doc=r""" nb of centroids""")
+    centroids = property(_swigfaiss.Clustering_centroids_get, _swigfaiss.Clustering_centroids_set, doc=r"""
+     centroids (k * d)
+    if centroids are set on input to train, they will be used as
+    initialization
+    """)
+    iteration_stats = property(_swigfaiss.Clustering_iteration_stats_get, _swigfaiss.Clustering_iteration_stats_set, doc=r""" stats at every iteration of clustering""")
+
+    def __init__(self, *args):
+        _swigfaiss.Clustering_swiginit(self, _swigfaiss.new_Clustering(*args))
+
+    def train(self, n, x, index, x_weights=None):
+        r"""
+         run k-means training
+
+        :type x: float
+        :param x:          training vectors, size n * d
+        :type index: :py:class:`Index`
+        :param index:      index used for assignment
+        :type x_weights: float, optional
+        :param x_weights:  weight associated to each vector: NULL or size n
+        """
+        return _swigfaiss.Clustering_train(self, n, x, index, x_weights)
+
+    def train_encoded(self, nx, x_in, codec, index, weights=None):
+        r"""
+         run with encoded vectors
+
+        win addition to train()'s parameters takes a codec as parameter
+        to decode the input vectors.
+
+        :type codec: :py:class:`Index`
+        :param codec:      codec used to decode the vectors (nullptr =
+                              vectors are in fact floats)     *
+        """
+        return _swigfaiss.Clustering_train_encoded(self, nx, x_in, codec, index, weights)
+
+    def post_process_centroids(self):
+        r"""
+        Post-process the centroids after each centroid update.
+        includes optional L2 normalization and nearest integer rounding
+        """
+        return _swigfaiss.Clustering_post_process_centroids(self)
+    __swig_destroy__ = _swigfaiss.delete_Clustering
+
+# Register Clustering in _swigfaiss:
+_swigfaiss.Clustering_swigregister(Clustering)
+
+class Clustering1D(Clustering):
+    r"""
+     Exact 1D clustering algorithm
+
+    Since it does not use an index, it does not overload the train() function
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.Clustering1D_swiginit(self, _swigfaiss.new_Clustering1D(*args))
+
+    def train_exact(self, n, x):
+        return _swigfaiss.Clustering1D_train_exact(self, n, x)
+    __swig_destroy__ = _swigfaiss.delete_Clustering1D
+
+# Register Clustering1D in _swigfaiss:
+_swigfaiss.Clustering1D_swigregister(Clustering1D)
+
+class ProgressiveDimClusteringParameters(ClusteringParameters):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    progressive_dim_steps = property(_swigfaiss.ProgressiveDimClusteringParameters_progressive_dim_steps_get, _swigfaiss.ProgressiveDimClusteringParameters_progressive_dim_steps_set, doc=r""" number of incremental steps""")
+    apply_pca = property(_swigfaiss.ProgressiveDimClusteringParameters_apply_pca_get, _swigfaiss.ProgressiveDimClusteringParameters_apply_pca_set, doc=r""" apply PCA on input""")
+
+    def __init__(self):
+        _swigfaiss.ProgressiveDimClusteringParameters_swiginit(self, _swigfaiss.new_ProgressiveDimClusteringParameters())
+    __swig_destroy__ = _swigfaiss.delete_ProgressiveDimClusteringParameters
+
+# Register ProgressiveDimClusteringParameters in _swigfaiss:
+_swigfaiss.ProgressiveDimClusteringParameters_swigregister(ProgressiveDimClusteringParameters)
+
+class ProgressiveDimIndexFactory(object):
+    r""" generates an index suitable for clustering when called"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __call__(self, dim):
+        r""" ownership transferred to caller"""
+        return _swigfaiss.ProgressiveDimIndexFactory___call__(self, dim)
+    __swig_destroy__ = _swigfaiss.delete_ProgressiveDimIndexFactory
+
+    def __init__(self):
+        _swigfaiss.ProgressiveDimIndexFactory_swiginit(self, _swigfaiss.new_ProgressiveDimIndexFactory())
+
+# Register ProgressiveDimIndexFactory in _swigfaiss:
+_swigfaiss.ProgressiveDimIndexFactory_swigregister(ProgressiveDimIndexFactory)
+
+class ProgressiveDimClustering(ProgressiveDimClusteringParameters):
+    r"""
+     K-means clustering with progressive dimensions used
+
+    The clustering first happens in dim 1, then with exponentially increasing
+    dimension until d (I steps). This is typically applied after a PCA
+    transformation (optional). Reference:
+
+    "Improved Residual Vector Quantization for High-dimensional Approximate
+    Nearest Neighbor Search"
+
+    Shicong Liu, Hongtao Lu, Junru Shao, AAAI'15
+
+    https://arxiv.org/abs/1509.05195
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    d = property(_swigfaiss.ProgressiveDimClustering_d_get, _swigfaiss.ProgressiveDimClustering_d_set, doc=r""" dimension of the vectors""")
+    k = property(_swigfaiss.ProgressiveDimClustering_k_get, _swigfaiss.ProgressiveDimClustering_k_set, doc=r""" nb of centroids""")
+    centroids = property(_swigfaiss.ProgressiveDimClustering_centroids_get, _swigfaiss.ProgressiveDimClustering_centroids_set, doc=r""" centroids (k * d)""")
+    iteration_stats = property(_swigfaiss.ProgressiveDimClustering_iteration_stats_get, _swigfaiss.ProgressiveDimClustering_iteration_stats_set, doc=r""" stats at every iteration of clustering""")
+
+    def __init__(self, *args):
+        _swigfaiss.ProgressiveDimClustering_swiginit(self, _swigfaiss.new_ProgressiveDimClustering(*args))
+
+    def train(self, n, x, factory):
+        return _swigfaiss.ProgressiveDimClustering_train(self, n, x, factory)
+    __swig_destroy__ = _swigfaiss.delete_ProgressiveDimClustering
+
+# Register ProgressiveDimClustering in _swigfaiss:
+_swigfaiss.ProgressiveDimClustering_swigregister(ProgressiveDimClustering)
+
+
+def kmeans_clustering(d, n, k, x, centroids):
+    r"""
+     simplified interface
+
+    :type d: int
+    :param d: dimension of the data
+    :type n: int
+    :param n: nb of training vectors
+    :type k: int
+    :param k: nb of output centroids
+    :type x: float
+    :param x: training set (size n * d)
+    :type centroids: float
+    :param centroids: output centroids (size k * d)
+    :rtype: float
+    :return: final quantization error
+    """
+    return _swigfaiss.kmeans_clustering(d, n, k, x, centroids)
+
+def pairwise_extra_distances(d, nq, xq, nb, xb, mt, metric_arg, dis, ldq=-1, ldb=-1, ldd=-1):
+    r"""
+    Copyright (c) Facebook, Inc. and its affiliates.
+
+    This source code is licensed under the MIT license found in the
+    LICENSE file in the root directory of this source tree.
+      In this file are the implementations of extra metrics beyond L2
+     and inner product
+    """
+    return _swigfaiss.pairwise_extra_distances(d, nq, xq, nb, xb, mt, metric_arg, dis, ldq, ldb, ldd)
+
+def knn_extra_metrics(x, y, d, nx, ny, mt, metric_arg, res):
+    return _swigfaiss.knn_extra_metrics(x, y, d, nx, ny, mt, metric_arg, res)
+
+def get_extra_distance_computer(d, mt, metric_arg, nb, xb):
+    r"""
+    get a DistanceComputer that refers to this type of distance and
+    indexes a flat array of size nb
+    """
+    return _swigfaiss.get_extra_distance_computer(d, mt, metric_arg, nb, xb)
+class ProductQuantizer(object):
+    r""" Product Quantizer. Implemented only for METRIC_L2"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    d = property(_swigfaiss.ProductQuantizer_d_get, _swigfaiss.ProductQuantizer_d_set, doc=r""" size of the input vectors""")
+    M = property(_swigfaiss.ProductQuantizer_M_get, _swigfaiss.ProductQuantizer_M_set, doc=r""" number of subquantizers""")
+    nbits = property(_swigfaiss.ProductQuantizer_nbits_get, _swigfaiss.ProductQuantizer_nbits_set, doc=r""" number of bits per quantization index""")
+    dsub = property(_swigfaiss.ProductQuantizer_dsub_get, _swigfaiss.ProductQuantizer_dsub_set, doc=r""" dimensionality of each subvector""")
+    code_size = property(_swigfaiss.ProductQuantizer_code_size_get, _swigfaiss.ProductQuantizer_code_size_set, doc=r""" bytes per indexed vector""")
+    ksub = property(_swigfaiss.ProductQuantizer_ksub_get, _swigfaiss.ProductQuantizer_ksub_set, doc=r""" number of centroids for each subquantizer""")
+    verbose = property(_swigfaiss.ProductQuantizer_verbose_get, _swigfaiss.ProductQuantizer_verbose_set, doc=r""" verbose during training?""")
+    Train_default = _swigfaiss.ProductQuantizer_Train_default
+    Train_hot_start = _swigfaiss.ProductQuantizer_Train_hot_start
+    r""" the centroids are already initialized"""
+    Train_shared = _swigfaiss.ProductQuantizer_Train_shared
+    r""" share dictionary accross PQ segments"""
+    Train_hypercube = _swigfaiss.ProductQuantizer_Train_hypercube
+    r""" intialize centroids with nbits-D hypercube"""
+    Train_hypercube_pca = _swigfaiss.ProductQuantizer_Train_hypercube_pca
+    r""" intialize centroids with nbits-D hypercube"""
+    train_type = property(_swigfaiss.ProductQuantizer_train_type_get, _swigfaiss.ProductQuantizer_train_type_set)
+    cp = property(_swigfaiss.ProductQuantizer_cp_get, _swigfaiss.ProductQuantizer_cp_set, doc=r""" parameters used during clustering""")
+    assign_index = property(_swigfaiss.ProductQuantizer_assign_index_get, _swigfaiss.ProductQuantizer_assign_index_set, doc=r"""
+    if non-NULL, use this index for assignment (should be of size
+    d / M)
+    """)
+    centroids = property(_swigfaiss.ProductQuantizer_centroids_get, _swigfaiss.ProductQuantizer_centroids_set, doc=r""" Centroid table, size M * ksub * dsub""")
+
+    def get_centroids(self, m, i):
+        r""" return the centroids associated with subvector m"""
+        return _swigfaiss.ProductQuantizer_get_centroids(self, m, i)
+
+    def train(self, n, x):
+        return _swigfaiss.ProductQuantizer_train(self, n, x)
+
+    def __init__(self, *args):
+        _swigfaiss.ProductQuantizer_swiginit(self, _swigfaiss.new_ProductQuantizer(*args))
+
+    def set_derived_values(self):
+        r""" compute derived values when d, M and nbits have been set"""
+        return _swigfaiss.ProductQuantizer_set_derived_values(self)
+
+    def set_params(self, centroids, m):
+        r""" Define the centroids for subquantizer m"""
+        return _swigfaiss.ProductQuantizer_set_params(self, centroids, m)
+
+    def compute_code(self, x, code):
+        r""" Quantize one vector with the product quantizer"""
+        return _swigfaiss.ProductQuantizer_compute_code(self, x, code)
+
+    def compute_codes(self, x, codes, n):
+        r""" same as compute_code for several vectors"""
+        return _swigfaiss.ProductQuantizer_compute_codes(self, x, codes, n)
+
+    def compute_codes_with_assign_index(self, x, codes, n):
+        r"""
+        speed up code assignment using assign_index
+        (non-const because the index is changed)
+        """
+        return _swigfaiss.ProductQuantizer_compute_codes_with_assign_index(self, x, codes, n)
+
+    def decode(self, *args):
+        return _swigfaiss.ProductQuantizer_decode(self, *args)
+
+    def compute_code_from_distance_table(self, tab, code):
+        r"""
+        If we happen to have the distance tables precomputed, this is
+        more efficient to compute the codes.
+        """
+        return _swigfaiss.ProductQuantizer_compute_code_from_distance_table(self, tab, code)
+
+    def compute_distance_table(self, x, dis_table):
+        r"""
+         Compute distance table for one vector.
+
+        The distance table for x = [x_0 x_1 .. x_(M-1)] is a M * ksub
+        matrix that contains
+
+          dis_table (m, j) = || x_m - c_(m, j)||^2
+          for m = 0..M-1 and j = 0 .. ksub - 1
+
+        where c_(m, j) is the centroid no j of sub-quantizer m.
+
+        :type x: float
+        :param x:         input vector size d
+        :type dis_table: float
+        :param dis_table: output table, size M * ksub
+        """
+        return _swigfaiss.ProductQuantizer_compute_distance_table(self, x, dis_table)
+
+    def compute_inner_prod_table(self, x, dis_table):
+        return _swigfaiss.ProductQuantizer_compute_inner_prod_table(self, x, dis_table)
+
+    def compute_distance_tables(self, nx, x, dis_tables):
+        r"""
+         compute distance table for several vectors
+        :type nx: int
+        :param nx:        nb of input vectors
+        :type x: float
+        :param x:         input vector size nx * d
+        :param dis_table: output table, size nx * M * ksub
+        """
+        return _swigfaiss.ProductQuantizer_compute_distance_tables(self, nx, x, dis_tables)
+
+    def compute_inner_prod_tables(self, nx, x, dis_tables):
+        return _swigfaiss.ProductQuantizer_compute_inner_prod_tables(self, nx, x, dis_tables)
+
+    def search(self, x, nx, codes, ncodes, res, init_finalize_heap=True):
+        r"""
+         perform a search (L2 distance)
+        :type x: float
+        :param x:        query vectors, size nx * d
+        :type nx: int
+        :param nx:       nb of queries
+        :type codes: uint8_t
+        :param codes:    database codes, size ncodes * code_size
+        :type ncodes: int
+        :param ncodes:   nb of nb vectors
+        :type res: :py:class:`float_maxheap_array_t`
+        :param res:      heap array to store results (nh == nx)
+        :type init_finalize_heap: boolean, optional
+        :param init_finalize_heap:  initialize heap (input) and sort (output)?
+        """
+        return _swigfaiss.ProductQuantizer_search(self, x, nx, codes, ncodes, res, init_finalize_heap)
+
+    def search_ip(self, x, nx, codes, ncodes, res, init_finalize_heap=True):
+        r""" same as search, but with inner product similarity"""
+        return _swigfaiss.ProductQuantizer_search_ip(self, x, nx, codes, ncodes, res, init_finalize_heap)
+    sdc_table = property(_swigfaiss.ProductQuantizer_sdc_table_get, _swigfaiss.ProductQuantizer_sdc_table_set, doc=r""" Symmetric Distance Table""")
+
+    def compute_sdc_table(self):
+        return _swigfaiss.ProductQuantizer_compute_sdc_table(self)
+
+    def search_sdc(self, qcodes, nq, bcodes, ncodes, res, init_finalize_heap=True):
+        return _swigfaiss.ProductQuantizer_search_sdc(self, qcodes, nq, bcodes, ncodes, res, init_finalize_heap)
+    __swig_destroy__ = _swigfaiss.delete_ProductQuantizer
+
+# Register ProductQuantizer in _swigfaiss:
+_swigfaiss.ProductQuantizer_swigregister(ProductQuantizer)
+
+class PQEncoderGeneric(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    code = property(_swigfaiss.PQEncoderGeneric_code_get, _swigfaiss.PQEncoderGeneric_code_set, doc=r""" code for this vector""")
+    offset = property(_swigfaiss.PQEncoderGeneric_offset_get, _swigfaiss.PQEncoderGeneric_offset_set)
+    nbits = property(_swigfaiss.PQEncoderGeneric_nbits_get, doc=r""" number of bits per subquantizer index""")
+    reg = property(_swigfaiss.PQEncoderGeneric_reg_get, _swigfaiss.PQEncoderGeneric_reg_set)
+
+    def __init__(self, code, nbits, offset=0):
+        _swigfaiss.PQEncoderGeneric_swiginit(self, _swigfaiss.new_PQEncoderGeneric(code, nbits, offset))
+
+    def encode(self, x):
+        return _swigfaiss.PQEncoderGeneric_encode(self, x)
+    __swig_destroy__ = _swigfaiss.delete_PQEncoderGeneric
+
+# Register PQEncoderGeneric in _swigfaiss:
+_swigfaiss.PQEncoderGeneric_swigregister(PQEncoderGeneric)
+
+class PQEncoder8(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    code = property(_swigfaiss.PQEncoder8_code_get, _swigfaiss.PQEncoder8_code_set)
+
+    def __init__(self, code, nbits):
+        _swigfaiss.PQEncoder8_swiginit(self, _swigfaiss.new_PQEncoder8(code, nbits))
+
+    def encode(self, x):
+        return _swigfaiss.PQEncoder8_encode(self, x)
+    __swig_destroy__ = _swigfaiss.delete_PQEncoder8
+
+# Register PQEncoder8 in _swigfaiss:
+_swigfaiss.PQEncoder8_swigregister(PQEncoder8)
+
+class PQEncoder16(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    code = property(_swigfaiss.PQEncoder16_code_get, _swigfaiss.PQEncoder16_code_set)
+
+    def __init__(self, code, nbits):
+        _swigfaiss.PQEncoder16_swiginit(self, _swigfaiss.new_PQEncoder16(code, nbits))
+
+    def encode(self, x):
+        return _swigfaiss.PQEncoder16_encode(self, x)
+    __swig_destroy__ = _swigfaiss.delete_PQEncoder16
+
+# Register PQEncoder16 in _swigfaiss:
+_swigfaiss.PQEncoder16_swigregister(PQEncoder16)
+
+class PQDecoderGeneric(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    code = property(_swigfaiss.PQDecoderGeneric_code_get, _swigfaiss.PQDecoderGeneric_code_set)
+    offset = property(_swigfaiss.PQDecoderGeneric_offset_get, _swigfaiss.PQDecoderGeneric_offset_set)
+    nbits = property(_swigfaiss.PQDecoderGeneric_nbits_get)
+    mask = property(_swigfaiss.PQDecoderGeneric_mask_get)
+    reg = property(_swigfaiss.PQDecoderGeneric_reg_get, _swigfaiss.PQDecoderGeneric_reg_set)
+
+    def __init__(self, code, nbits):
+        _swigfaiss.PQDecoderGeneric_swiginit(self, _swigfaiss.new_PQDecoderGeneric(code, nbits))
+
+    def decode(self):
+        return _swigfaiss.PQDecoderGeneric_decode(self)
+    __swig_destroy__ = _swigfaiss.delete_PQDecoderGeneric
+
+# Register PQDecoderGeneric in _swigfaiss:
+_swigfaiss.PQDecoderGeneric_swigregister(PQDecoderGeneric)
+
+class PQDecoder8(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nbits = _swigfaiss.PQDecoder8_nbits
+    code = property(_swigfaiss.PQDecoder8_code_get, _swigfaiss.PQDecoder8_code_set)
+
+    def __init__(self, code, nbits):
+        _swigfaiss.PQDecoder8_swiginit(self, _swigfaiss.new_PQDecoder8(code, nbits))
+
+    def decode(self):
+        return _swigfaiss.PQDecoder8_decode(self)
+    __swig_destroy__ = _swigfaiss.delete_PQDecoder8
+
+# Register PQDecoder8 in _swigfaiss:
+_swigfaiss.PQDecoder8_swigregister(PQDecoder8)
+
+class PQDecoder16(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nbits = _swigfaiss.PQDecoder16_nbits
+    code = property(_swigfaiss.PQDecoder16_code_get, _swigfaiss.PQDecoder16_code_set)
+
+    def __init__(self, code, nbits):
+        _swigfaiss.PQDecoder16_swiginit(self, _swigfaiss.new_PQDecoder16(code, nbits))
+
+    def decode(self):
+        return _swigfaiss.PQDecoder16_decode(self)
+    __swig_destroy__ = _swigfaiss.delete_PQDecoder16
+
+# Register PQDecoder16 in _swigfaiss:
+_swigfaiss.PQDecoder16_swigregister(PQDecoder16)
+
+class AdditiveQuantizer(object):
+    r"""
+     Abstract structure for additive quantizers
+
+    Different from the product quantizer in which the decoded vector is the
+    concatenation of M sub-vectors, additive quantizers sum M sub-vectors
+    to get the decoded vector.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    d = property(_swigfaiss.AdditiveQuantizer_d_get, _swigfaiss.AdditiveQuantizer_d_set, doc=r""" size of the input vectors""")
+    M = property(_swigfaiss.AdditiveQuantizer_M_get, _swigfaiss.AdditiveQuantizer_M_set, doc=r""" number of codebooks""")
+    nbits = property(_swigfaiss.AdditiveQuantizer_nbits_get, _swigfaiss.AdditiveQuantizer_nbits_set, doc=r""" bits for each step""")
+    codebooks = property(_swigfaiss.AdditiveQuantizer_codebooks_get, _swigfaiss.AdditiveQuantizer_codebooks_set, doc=r""" codebooks""")
+    codebook_offsets = property(_swigfaiss.AdditiveQuantizer_codebook_offsets_get, _swigfaiss.AdditiveQuantizer_codebook_offsets_set)
+    code_size = property(_swigfaiss.AdditiveQuantizer_code_size_get, _swigfaiss.AdditiveQuantizer_code_size_set, doc=r""" code size in bytes""")
+    tot_bits = property(_swigfaiss.AdditiveQuantizer_tot_bits_get, _swigfaiss.AdditiveQuantizer_tot_bits_set, doc=r""" total number of bits""")
+    total_codebook_size = property(_swigfaiss.AdditiveQuantizer_total_codebook_size_get, _swigfaiss.AdditiveQuantizer_total_codebook_size_set, doc=r""" size of the codebook in vectors""")
+    only_8bit = property(_swigfaiss.AdditiveQuantizer_only_8bit_get, _swigfaiss.AdditiveQuantizer_only_8bit_set, doc=r""" are all nbits = 8 (use faster decoder)""")
+    verbose = property(_swigfaiss.AdditiveQuantizer_verbose_get, _swigfaiss.AdditiveQuantizer_verbose_set, doc=r""" verbose during training?""")
+    is_trained = property(_swigfaiss.AdditiveQuantizer_is_trained_get, _swigfaiss.AdditiveQuantizer_is_trained_set, doc=r""" is trained or not""")
+    qnorm = property(_swigfaiss.AdditiveQuantizer_qnorm_get, _swigfaiss.AdditiveQuantizer_qnorm_set, doc=r""" store and search norms""")
+
+    def encode_qcint(self, x):
+        r""" encode norm by non-uniform scalar quantization"""
+        return _swigfaiss.AdditiveQuantizer_encode_qcint(self, x)
+
+    def decode_qcint(self, c):
+        r""" decode norm by non-uniform scalar quantization"""
+        return _swigfaiss.AdditiveQuantizer_decode_qcint(self, c)
+    ST_decompress = _swigfaiss.AdditiveQuantizer_ST_decompress
+    r""" decompress database vector"""
+    ST_LUT_nonorm = _swigfaiss.AdditiveQuantizer_ST_LUT_nonorm
+    r"""
+    use a LUT, don't include norms (OK for IP or
+    normalized vectors)
+    """
+    ST_norm_from_LUT = _swigfaiss.AdditiveQuantizer_ST_norm_from_LUT
+    r"""
+    compute the norms from the look-up tables (cost
+    is in O(M^2))
+    """
+    ST_norm_float = _swigfaiss.AdditiveQuantizer_ST_norm_float
+    r""" use a LUT, and store float32 norm with the vectors"""
+    ST_norm_qint8 = _swigfaiss.AdditiveQuantizer_ST_norm_qint8
+    r""" use a LUT, and store 8bit-quantized norm"""
+    ST_norm_qint4 = _swigfaiss.AdditiveQuantizer_ST_norm_qint4
+    ST_norm_cqint8 = _swigfaiss.AdditiveQuantizer_ST_norm_cqint8
+    r""" use a LUT, and store non-uniform quantized norm"""
+    ST_norm_cqint4 = _swigfaiss.AdditiveQuantizer_ST_norm_cqint4
+
+    def set_derived_values(self):
+        r""" Train the additive quantizer"""
+        return _swigfaiss.AdditiveQuantizer_set_derived_values(self)
+
+    def train(self, n, x):
+        return _swigfaiss.AdditiveQuantizer_train(self, n, x)
+
+    def compute_codes(self, x, codes, n):
+        r"""
+         Encode a set of vectors
+
+        :type x: float
+        :param x:      vectors to encode, size n * d
+        :type codes: uint8_t
+        :param codes:  output codes, size n * code_size
+        """
+        return _swigfaiss.AdditiveQuantizer_compute_codes(self, x, codes, n)
+
+    def pack_codes(self, n, codes, packed_codes, ld_codes=-1, norms=None):
+        r"""
+         pack a series of code to bit-compact format
+
+        :type codes: int
+        :param codes:        codes to be packed, size n * code_size
+        :type packed_codes: uint8_t
+        :param packed_codes: output bit-compact codes
+        :type ld_codes: int, optional
+        :param ld_codes:     leading dimension of codes
+        :type norms: float, optional
+        :param norms:        norms of the vectors (size n). Will be computed if
+                                needed but not provided
+        """
+        return _swigfaiss.AdditiveQuantizer_pack_codes(self, n, codes, packed_codes, ld_codes, norms)
+
+    def decode(self, codes, x, n):
+        r"""
+         Decode a set of vectors
+
+        :type codes: uint8_t
+        :param codes:  codes to decode, size n * code_size
+        :type x: float
+        :param x:      output vectors, size n * d
+        """
+        return _swigfaiss.AdditiveQuantizer_decode(self, codes, x, n)
+
+    def decode_unpacked(self, codes, x, n, ld_codes=-1):
+        r"""
+         Decode a set of vectors in non-packed format
+
+        :type codes: int
+        :param codes:  codes to decode, size n * ld_codes
+        :type x: float
+        :param x:      output vectors, size n * d
+        """
+        return _swigfaiss.AdditiveQuantizer_decode_unpacked(self, codes, x, n, ld_codes)
+    search_type = property(_swigfaiss.AdditiveQuantizer_search_type_get, _swigfaiss.AdditiveQuantizer_search_type_set, doc=r""" Also determines what's in the codes""")
+    norm_min = property(_swigfaiss.AdditiveQuantizer_norm_min_get, _swigfaiss.AdditiveQuantizer_norm_min_set, doc=r""" min/max for quantization of norms""")
+    norm_max = property(_swigfaiss.AdditiveQuantizer_norm_max_get, _swigfaiss.AdditiveQuantizer_norm_max_set)
+
+    def decode_64bit(self, n, x):
+        r""" decoding function for a code in a 64-bit word"""
+        return _swigfaiss.AdditiveQuantizer_decode_64bit(self, n, x)
+
+    def compute_LUT(self, n, xq, LUT):
+        r"""
+         Compute inner-product look-up tables. Used in the centroid search
+        functions.
+
+        :type xq: float
+        :param xq:     query vector, size (n, d)
+        :type LUT: float
+        :param LUT:    look-up table, size (n, total_codebook_size)
+        """
+        return _swigfaiss.AdditiveQuantizer_compute_LUT(self, n, xq, LUT)
+
+    def knn_centroids_inner_product(self, n, xq, k, distances, labels):
+        r""" exact IP search"""
+        return _swigfaiss.AdditiveQuantizer_knn_centroids_inner_product(self, n, xq, k, distances, labels)
+
+    def compute_centroid_norms(self, norms):
+        r"""
+         For L2 search we need the L2 norms of the centroids
+
+        :type norms: float
+        :param norms:    output norms table, size total_codebook_size
+        """
+        return _swigfaiss.AdditiveQuantizer_compute_centroid_norms(self, norms)
+
+    def knn_centroids_L2(self, n, xq, k, distances, labels, centroid_norms):
+        r""" Exact L2 search, with precomputed norms"""
+        return _swigfaiss.AdditiveQuantizer_knn_centroids_L2(self, n, xq, k, distances, labels, centroid_norms)
+    __swig_destroy__ = _swigfaiss.delete_AdditiveQuantizer
+
+# Register AdditiveQuantizer in _swigfaiss:
+_swigfaiss.AdditiveQuantizer_swigregister(AdditiveQuantizer)
+
+class ResidualQuantizer(AdditiveQuantizer):
+    r"""
+     Residual quantizer with variable number of bits per sub-quantizer
+
+    The residual centroids are stored in a big cumulative centroid table.
+    The codes are represented either as a non-compact table of size (n, M) or
+    as the compact output (n, code_size).
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    Train_default = _swigfaiss.ResidualQuantizer_Train_default
+    r""" regular k-means"""
+    Train_progressive_dim = _swigfaiss.ResidualQuantizer_Train_progressive_dim
+    r""" progressive dim clustering"""
+    Train_default_Train_top_beam = _swigfaiss.ResidualQuantizer_Train_default_Train_top_beam
+    Train_progressive_dim_Train_top_beam = _swigfaiss.ResidualQuantizer_Train_progressive_dim_Train_top_beam
+    Train_default_Skip_codebook_tables = _swigfaiss.ResidualQuantizer_Train_default_Skip_codebook_tables
+    Train_progressive_dim_Skip_codebook_tables = _swigfaiss.ResidualQuantizer_Train_progressive_dim_Skip_codebook_tables
+    Train_default_Train_top_beam_Skip_codebook_tables = _swigfaiss.ResidualQuantizer_Train_default_Train_top_beam_Skip_codebook_tables
+    Train_progressive_dim_Train_top_beam_Skip_codebook_tables = _swigfaiss.ResidualQuantizer_Train_progressive_dim_Train_top_beam_Skip_codebook_tables
+    train_type = property(_swigfaiss.ResidualQuantizer_train_type_get, _swigfaiss.ResidualQuantizer_train_type_set)
+    Train_top_beam = _swigfaiss.ResidualQuantizer_Train_top_beam
+    Skip_codebook_tables = _swigfaiss.ResidualQuantizer_Skip_codebook_tables
+    max_beam_size = property(_swigfaiss.ResidualQuantizer_max_beam_size_get, _swigfaiss.ResidualQuantizer_max_beam_size_set, doc=r""" beam size used for training and for encoding""")
+    use_beam_LUT = property(_swigfaiss.ResidualQuantizer_use_beam_LUT_get, _swigfaiss.ResidualQuantizer_use_beam_LUT_set, doc=r""" use LUT for beam search""")
+    max_mem_distances = property(_swigfaiss.ResidualQuantizer_max_mem_distances_get, _swigfaiss.ResidualQuantizer_max_mem_distances_set, doc=r"""
+    distance matrixes with beam search can get large, so use this
+    to batch computations at encoding time.
+    """)
+    cp = property(_swigfaiss.ResidualQuantizer_cp_get, _swigfaiss.ResidualQuantizer_cp_set, doc=r""" clustering parameters""")
+    assign_index_factory = property(_swigfaiss.ResidualQuantizer_assign_index_factory_get, _swigfaiss.ResidualQuantizer_assign_index_factory_set, doc=r""" if non-NULL, use this index for assignment""")
+
+    def __init__(self, *args):
+        _swigfaiss.ResidualQuantizer_swiginit(self, _swigfaiss.new_ResidualQuantizer(*args))
+
+    def train(self, n, x):
+        return _swigfaiss.ResidualQuantizer_train(self, n, x)
+
+    def compute_codes(self, x, codes, n):
+        r"""
+         Encode a set of vectors
+
+        :type x: float
+        :param x:      vectors to encode, size n * d
+        :type codes: uint8_t
+        :param codes:  output codes, size n * code_size
+        """
+        return _swigfaiss.ResidualQuantizer_compute_codes(self, x, codes, n)
+
+    def refine_beam(self, n, beam_size, residuals, new_beam_size, new_codes, new_residuals=None, new_distances=None):
+        r"""
+         lower-level encode function
+
+        :type n: int
+        :param n:              number of vectors to hanlde
+        :type residuals: float
+        :param residuals:      vectors to encode, size (n, beam_size, d)
+        :type beam_size: int
+        :param beam_size:      input beam size
+        :type new_beam_size: int
+        :param new_beam_size:  output beam size (should be <= K * beam_size)
+        :type new_codes: int
+        :param new_codes:      output codes, size (n, new_beam_size, m + 1)
+        :type new_residuals: float, optional
+        :param new_residuals:  output residuals, size (n, new_beam_size, d)
+        :type new_distances: float, optional
+        :param new_distances:  output distances, size (n, new_beam_size)
+        """
+        return _swigfaiss.ResidualQuantizer_refine_beam(self, n, beam_size, residuals, new_beam_size, new_codes, new_residuals, new_distances)
+
+    def refine_beam_LUT(self, n, query_norms, query_cp, new_beam_size, new_codes, new_distances=None):
+        return _swigfaiss.ResidualQuantizer_refine_beam_LUT(self, n, query_norms, query_cp, new_beam_size, new_codes, new_distances)
+
+    def memory_per_point(self, beam_size=-1):
+        r"""
+         Beam search can consume a lot of memory. This function estimates the
+        amount of mem used by refine_beam to adjust the batch size
+
+        :type beam_size: int, optional
+        :param beam_size:  if != -1, override the beam size
+        """
+        return _swigfaiss.ResidualQuantizer_memory_per_point(self, beam_size)
+
+    def compute_codebook_tables(self):
+        r"""
+         Cross products used in codebook tables
+
+        These are used to keep trak of norms of centroids.
+        """
+        return _swigfaiss.ResidualQuantizer_compute_codebook_tables(self)
+    codebook_cross_products = property(_swigfaiss.ResidualQuantizer_codebook_cross_products_get, _swigfaiss.ResidualQuantizer_codebook_cross_products_set, doc=r"""
+    dot products of all codebook vectors with each other
+    size total_codebook_size * total_codebook_size
+    """)
+    cent_norms = property(_swigfaiss.ResidualQuantizer_cent_norms_get, _swigfaiss.ResidualQuantizer_cent_norms_set, doc=r""" norms of all vectors""")
+    __swig_destroy__ = _swigfaiss.delete_ResidualQuantizer
+
+# Register ResidualQuantizer in _swigfaiss:
+_swigfaiss.ResidualQuantizer_swigregister(ResidualQuantizer)
+
+
+def beam_search_encode_step(d, K, cent, n, beam_size, residuals, m, codes, new_beam_size, new_codes, new_residuals, new_distances, assign_index=None):
+    r"""
+     Encode a residual by sampling from a centroid table.
+
+    This is a single encoding step the residual quantizer.
+    It allows low-level access to the encoding function, exposed mainly for unit
+    tests.
+
+    :type n: int
+    :param n:              number of vectors to hanlde
+    :type residuals: float
+    :param residuals:      vectors to encode, size (n, beam_size, d)
+    :type cent: float
+    :param cent:           centroids, size (K, d)
+    :type beam_size: int
+    :param beam_size:      input beam size
+    :type m: int
+    :param m:              size of the codes for the previous encoding steps
+    :type codes: int
+    :param codes:          code array for the previous steps of the beam (n,
+        beam_size, m)
+    :type new_beam_size: int
+    :param new_beam_size:  output beam size (should be <= K * beam_size)
+    :type new_codes: int
+    :param new_codes:      output codes, size (n, new_beam_size, m + 1)
+    :type new_residuals: float
+    :param new_residuals:  output residuals, size (n, new_beam_size, d)
+    :type new_distances: float
+    :param new_distances:  output distances, size (n, new_beam_size)
+    :type assign_index: :py:class:`Index`, optional
+    :param assign_index:   if non-NULL, will be used to perform assignment
+    """
+    return _swigfaiss.beam_search_encode_step(d, K, cent, n, beam_size, residuals, m, codes, new_beam_size, new_codes, new_residuals, new_distances, assign_index)
+
+def beam_search_encode_step_tab(K, n, beam_size, codebook_cross_norms, ldc, codebook_offsets, query_cp, ldqc, cent_norms_i, m, codes, distances, new_beam_size, new_codes, new_distances):
+    r""" Encode a set of vectors using their dot products with the codebooks"""
+    return _swigfaiss.beam_search_encode_step_tab(K, n, beam_size, codebook_cross_norms, ldc, codebook_offsets, query_cp, ldqc, cent_norms_i, m, codes, distances, new_beam_size, new_codes, new_distances)
+class LocalSearchQuantizer(AdditiveQuantizer):
+    r"""
+     Implementation of LSQ/LSQ++ described in the following two papers:
+
+    Revisiting additive quantization
+    Julieta Martinez, et al. ECCV 2016
+
+    LSQ++: Lower running time and higher recall in multi-codebook quantization
+    Julieta Martinez, et al. ECCV 2018
+
+    This implementation is mostly translated from the Julia implementations
+    by Julieta Martinez:
+    (https://github.com/una-dinosauria/local-search-quantization,
+     https://github.com/una-dinosauria/Rayuela.jl)
+
+    The trained codes are stored in `codebooks` which is called
+    `centroids` in PQ and RQ.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    K = property(_swigfaiss.LocalSearchQuantizer_K_get, _swigfaiss.LocalSearchQuantizer_K_set, doc=r""" number of codes per codebook""")
+    train_iters = property(_swigfaiss.LocalSearchQuantizer_train_iters_get, _swigfaiss.LocalSearchQuantizer_train_iters_set, doc=r""" number of iterations in training""")
+    encode_ils_iters = property(_swigfaiss.LocalSearchQuantizer_encode_ils_iters_get, _swigfaiss.LocalSearchQuantizer_encode_ils_iters_set, doc=r""" iterations of local search in encoding""")
+    train_ils_iters = property(_swigfaiss.LocalSearchQuantizer_train_ils_iters_get, _swigfaiss.LocalSearchQuantizer_train_ils_iters_set, doc=r""" iterations of local search in training""")
+    icm_iters = property(_swigfaiss.LocalSearchQuantizer_icm_iters_get, _swigfaiss.LocalSearchQuantizer_icm_iters_set, doc=r""" number of iterations in icm""")
+    p = property(_swigfaiss.LocalSearchQuantizer_p_get, _swigfaiss.LocalSearchQuantizer_p_set, doc=r""" temperature factor""")
+    lambd = property(_swigfaiss.LocalSearchQuantizer_lambd_get, _swigfaiss.LocalSearchQuantizer_lambd_set, doc=r""" regularization factor""")
+    chunk_size = property(_swigfaiss.LocalSearchQuantizer_chunk_size_get, _swigfaiss.LocalSearchQuantizer_chunk_size_set, doc=r""" nb of vectors to encode at a time""")
+    random_seed = property(_swigfaiss.LocalSearchQuantizer_random_seed_get, _swigfaiss.LocalSearchQuantizer_random_seed_set, doc=r""" seed for random generator""")
+    nperts = property(_swigfaiss.LocalSearchQuantizer_nperts_get, _swigfaiss.LocalSearchQuantizer_nperts_set, doc=r"""
+    number of perturbation in each code
+    if non-NULL, use this encoder to encode
+    """)
+    icm_encoder_factory = property(_swigfaiss.LocalSearchQuantizer_icm_encoder_factory_get, _swigfaiss.LocalSearchQuantizer_icm_encoder_factory_set)
+    update_codebooks_with_double = property(_swigfaiss.LocalSearchQuantizer_update_codebooks_with_double_get, _swigfaiss.LocalSearchQuantizer_update_codebooks_with_double_set)
+
+    def __init__(self, *args):
+        _swigfaiss.LocalSearchQuantizer_swiginit(self, _swigfaiss.new_LocalSearchQuantizer(*args))
+    __swig_destroy__ = _swigfaiss.delete_LocalSearchQuantizer
+
+    def train(self, n, x):
+        return _swigfaiss.LocalSearchQuantizer_train(self, n, x)
+
+    def compute_codes(self, x, codes, n):
+        r"""
+         Encode a set of vectors
+
+        :type x: float
+        :param x:      vectors to encode, size n * d
+        :type codes: uint8_t
+        :param codes:  output codes, size n * code_size
+        :type n: int
+        :param n:      number of vectors
+        """
+        return _swigfaiss.LocalSearchQuantizer_compute_codes(self, x, codes, n)
+
+    def update_codebooks(self, x, codes, n):
+        r"""
+         Update codebooks given encodings
+
+        :type x: float
+        :param x:      training vectors, size n * d
+        :type codes: int
+        :param codes:  encoded training vectors, size n * M
+        :type n: int
+        :param n:      number of vectors
+        """
+        return _swigfaiss.LocalSearchQuantizer_update_codebooks(self, x, codes, n)
+
+    def icm_encode(self, codes, x, n, ils_iters, gen):
+        r"""
+         Encode vectors given codebooks using iterative conditional mode (icm).
+
+        :type codes: int
+        :param codes:     output codes, size n * M
+        :type x: float
+        :param x:         vectors to encode, size n * d
+        :type n: int
+        :param n:         number of vectors
+        :type ils_iters: int
+        :param ils_iters: number of iterations of iterative local search
+        """
+        return _swigfaiss.LocalSearchQuantizer_icm_encode(self, codes, x, n, ils_iters, gen)
+
+    def icm_encode_impl(self, codes, x, unaries, gen, n, ils_iters, verbose):
+        return _swigfaiss.LocalSearchQuantizer_icm_encode_impl(self, codes, x, unaries, gen, n, ils_iters, verbose)
+
+    def icm_encode_step(self, codes, unaries, binaries, n, n_iters):
+        return _swigfaiss.LocalSearchQuantizer_icm_encode_step(self, codes, unaries, binaries, n, n_iters)
+
+    def perturb_codes(self, codes, n, gen):
+        r"""
+         Add some perturbation to codes
+
+        :type codes: int
+        :param codes: codes to be perturbed, size n * M
+        :type n: int
+        :param n:     number of vectors
+        """
+        return _swigfaiss.LocalSearchQuantizer_perturb_codes(self, codes, n, gen)
+
+    def perturb_codebooks(self, T, stddev, gen):
+        r"""
+         Add some perturbation to codebooks
+
+        :type T: float
+        :param T:         temperature of simulated annealing
+        :type stddev: std::vector< float >
+        :param stddev:    standard derivations of each dimension in training data
+        """
+        return _swigfaiss.LocalSearchQuantizer_perturb_codebooks(self, T, stddev, gen)
+
+    def compute_binary_terms(self, binaries):
+        r"""
+         Compute binary terms
+
+        :type binaries: float
+        :param binaries: binary terms, size M * M * K * K
+        """
+        return _swigfaiss.LocalSearchQuantizer_compute_binary_terms(self, binaries)
+
+    def compute_unary_terms(self, x, unaries, n):
+        r"""
+         Compute unary terms
+
+        :type n: int
+        :param n:       number of vectors
+        :type x: float
+        :param x:       vectors to encode, size n * d
+        :type unaries: float
+        :param unaries: unary terms, size n * M * K
+        """
+        return _swigfaiss.LocalSearchQuantizer_compute_unary_terms(self, x, unaries, n)
+
+    def evaluate(self, codes, x, n, objs=None):
+        r"""
+         Helper function to compute reconstruction error
+
+        :type codes: int
+        :param codes: encoded codes, size n * M
+        :type x: float
+        :param x:     vectors to encode, size n * d
+        :type n: int
+        :param n:     number of vectors
+        :type objs: float, optional
+        :param objs:  if it is not null, store reconstruction
+                                error of each vector into it, size n
+        """
+        return _swigfaiss.LocalSearchQuantizer_evaluate(self, codes, x, n, objs)
+
+# Register LocalSearchQuantizer in _swigfaiss:
+_swigfaiss.LocalSearchQuantizer_swigregister(LocalSearchQuantizer)
+
+class IcmEncoder(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    binaries = property(_swigfaiss.IcmEncoder_binaries_get, _swigfaiss.IcmEncoder_binaries_set)
+    verbose = property(_swigfaiss.IcmEncoder_verbose_get, _swigfaiss.IcmEncoder_verbose_set)
+    lsq = property(_swigfaiss.IcmEncoder_lsq_get, _swigfaiss.IcmEncoder_lsq_set)
+
+    def __init__(self, lsq):
+        _swigfaiss.IcmEncoder_swiginit(self, _swigfaiss.new_IcmEncoder(lsq))
+    __swig_destroy__ = _swigfaiss.delete_IcmEncoder
+
+    def set_binary_term(self):
+        return _swigfaiss.IcmEncoder_set_binary_term(self)
+
+    def encode(self, codes, x, gen, n, ils_iters):
+        r"""
+         Encode vectors given codebooks
+
+        :type codes: int
+        :param codes:     output codes, size n * M
+        :type x: float
+        :param x:         vectors to encode, size n * d
+        :type gen: std::mt19937
+        :param gen:       random generator
+        :type n: int
+        :param n:         number of vectors
+        :type ils_iters: int
+        :param ils_iters: number of iterations of iterative local search
+        """
+        return _swigfaiss.IcmEncoder_encode(self, codes, x, gen, n, ils_iters)
+
+# Register IcmEncoder in _swigfaiss:
+_swigfaiss.IcmEncoder_swigregister(IcmEncoder)
+
+class IcmEncoderFactory(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def get(self, lsq):
+        return _swigfaiss.IcmEncoderFactory_get(self, lsq)
+    __swig_destroy__ = _swigfaiss.delete_IcmEncoderFactory
+
+    def __init__(self):
+        _swigfaiss.IcmEncoderFactory_swiginit(self, _swigfaiss.new_IcmEncoderFactory())
+
+# Register IcmEncoderFactory in _swigfaiss:
+_swigfaiss.IcmEncoderFactory_swigregister(IcmEncoderFactory)
+
+class LSQTimer(object):
+    r"""
+    A helper struct to count consuming time during training.
+    It is NOT thread-safe.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    t = property(_swigfaiss.LSQTimer_t_get, _swigfaiss.LSQTimer_t_set)
+
+    def __init__(self):
+        _swigfaiss.LSQTimer_swiginit(self, _swigfaiss.new_LSQTimer())
+
+    def get(self, name):
+        return _swigfaiss.LSQTimer_get(self, name)
+
+    def add(self, name, delta):
+        return _swigfaiss.LSQTimer_add(self, name, delta)
+
+    def reset(self):
+        return _swigfaiss.LSQTimer_reset(self)
+    __swig_destroy__ = _swigfaiss.delete_LSQTimer
+
+# Register LSQTimer in _swigfaiss:
+_swigfaiss.LSQTimer_swigregister(LSQTimer)
+
+class LSQTimerScope(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    t0 = property(_swigfaiss.LSQTimerScope_t0_get, _swigfaiss.LSQTimerScope_t0_set)
+    timer = property(_swigfaiss.LSQTimerScope_timer_get, _swigfaiss.LSQTimerScope_timer_set)
+    name = property(_swigfaiss.LSQTimerScope_name_get, _swigfaiss.LSQTimerScope_name_set)
+    finished = property(_swigfaiss.LSQTimerScope_finished_get, _swigfaiss.LSQTimerScope_finished_set)
+
+    def __init__(self, timer, name):
+        _swigfaiss.LSQTimerScope_swiginit(self, _swigfaiss.new_LSQTimerScope(timer, name))
+
+    def finish(self):
+        return _swigfaiss.LSQTimerScope_finish(self)
+    __swig_destroy__ = _swigfaiss.delete_LSQTimerScope
+
+# Register LSQTimerScope in _swigfaiss:
+_swigfaiss.LSQTimerScope_swigregister(LSQTimerScope)
+
+class VectorTransform(object):
+    r""" Any transformation applied on a set of vectors"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    d_in = property(_swigfaiss.VectorTransform_d_in_get, _swigfaiss.VectorTransform_d_in_set)
+    d_out = property(_swigfaiss.VectorTransform_d_out_get, _swigfaiss.VectorTransform_d_out_set, doc=r"""input dimension""")
+    is_trained = property(_swigfaiss.VectorTransform_is_trained_get, _swigfaiss.VectorTransform_is_trained_set, doc=r"""
+    set if the VectorTransform does not require training, or if
+    training is done already
+    """)
+
+    def train(self, n, x):
+        r"""
+         Perform training on a representative set of vectors. Does
+        nothing by default.
+
+        :type n: int
+        :param n:      nb of training vectors
+        :type x: float
+        :param x:      training vecors, size n * d
+        """
+        return _swigfaiss.VectorTransform_train(self, n, x)
+
+    def apply(self, n, x):
+        r"""
+         apply the random rotation, return new allocated matrix
+        :type x: float
+        :param x: size n * d_in
+        :rtype: float
+        :return: size n * d_out
+        """
+        return _swigfaiss.VectorTransform_apply(self, n, x)
+
+    def apply_noalloc(self, n, x, xt):
+        r""" same as apply, but result is pre-allocated"""
+        return _swigfaiss.VectorTransform_apply_noalloc(self, n, x, xt)
+
+    def reverse_transform(self, n, xt, x):
+        r"""
+        reverse transformation. May not be implemented or may return
+        approximate result
+        """
+        return _swigfaiss.VectorTransform_reverse_transform(self, n, xt, x)
+    __swig_destroy__ = _swigfaiss.delete_VectorTransform
+
+# Register VectorTransform in _swigfaiss:
+_swigfaiss.VectorTransform_swigregister(VectorTransform)
+
+class LinearTransform(VectorTransform):
+    r"""
+     Generic linear transformation, with bias term applied on output
+    y = A * x + b
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    have_bias = property(_swigfaiss.LinearTransform_have_bias_get, _swigfaiss.LinearTransform_have_bias_set)
+    is_orthonormal = property(_swigfaiss.LinearTransform_is_orthonormal_get, _swigfaiss.LinearTransform_is_orthonormal_set, doc=r"""
+    whether to use the bias term
+     check if matrix A is orthonormal (enables reverse_transform)
+    """)
+    A = property(_swigfaiss.LinearTransform_A_get, _swigfaiss.LinearTransform_A_set, doc=r""" Transformation matrix, size d_out * d_in""")
+    b = property(_swigfaiss.LinearTransform_b_get, _swigfaiss.LinearTransform_b_set, doc=r""" bias vector, size d_out""")
+
+    def __init__(self, d_in=0, d_out=0, have_bias=False):
+        r""" both d_in > d_out and d_out < d_in are supported"""
+        _swigfaiss.LinearTransform_swiginit(self, _swigfaiss.new_LinearTransform(d_in, d_out, have_bias))
+
+    def apply_noalloc(self, n, x, xt):
+        r""" same as apply, but result is pre-allocated"""
+        return _swigfaiss.LinearTransform_apply_noalloc(self, n, x, xt)
+
+    def transform_transpose(self, n, y, x):
+        r"""
+        compute x = A^T * (x - b)
+        is reverse transform if A has orthonormal lines
+        """
+        return _swigfaiss.LinearTransform_transform_transpose(self, n, y, x)
+
+    def reverse_transform(self, n, xt, x):
+        r""" works only if is_orthonormal"""
+        return _swigfaiss.LinearTransform_reverse_transform(self, n, xt, x)
+
+    def set_is_orthonormal(self):
+        r""" compute A^T * A to set the is_orthonormal flag"""
+        return _swigfaiss.LinearTransform_set_is_orthonormal(self)
+    verbose = property(_swigfaiss.LinearTransform_verbose_get, _swigfaiss.LinearTransform_verbose_set)
+
+    def print_if_verbose(self, name, mat, n, d):
+        return _swigfaiss.LinearTransform_print_if_verbose(self, name, mat, n, d)
+    __swig_destroy__ = _swigfaiss.delete_LinearTransform
+
+# Register LinearTransform in _swigfaiss:
+_swigfaiss.LinearTransform_swigregister(LinearTransform)
+
+class RandomRotationMatrix(LinearTransform):
+    r""" Randomly rotate a set of vectors"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def init(self, seed):
+        r""" must be called before the transform is used"""
+        return _swigfaiss.RandomRotationMatrix_init(self, seed)
+
+    def train(self, n, x):
+        return _swigfaiss.RandomRotationMatrix_train(self, n, x)
+
+    def __init__(self, *args):
+        _swigfaiss.RandomRotationMatrix_swiginit(self, _swigfaiss.new_RandomRotationMatrix(*args))
+    __swig_destroy__ = _swigfaiss.delete_RandomRotationMatrix
+
+# Register RandomRotationMatrix in _swigfaiss:
+_swigfaiss.RandomRotationMatrix_swigregister(RandomRotationMatrix)
+
+class PCAMatrix(LinearTransform):
+    r"""
+    Applies a principal component analysis on a set of vectors,
+    with optionally whitening and random rotation.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    eigen_power = property(_swigfaiss.PCAMatrix_eigen_power_get, _swigfaiss.PCAMatrix_eigen_power_set, doc=r"""
+     after transformation the components are multiplied by
+    eigenvalues^eigen_power
+
+    =0: no whitening
+    =-0.5: full whitening
+    """)
+    epsilon = property(_swigfaiss.PCAMatrix_epsilon_get, _swigfaiss.PCAMatrix_epsilon_set, doc=r""" value added to eigenvalues to avoid division by 0 when whitening""")
+    random_rotation = property(_swigfaiss.PCAMatrix_random_rotation_get, _swigfaiss.PCAMatrix_random_rotation_set, doc=r""" random rotation after PCA""")
+    max_points_per_d = property(_swigfaiss.PCAMatrix_max_points_per_d_get, _swigfaiss.PCAMatrix_max_points_per_d_set, doc=r""" ratio between # training vectors and dimension""")
+    balanced_bins = property(_swigfaiss.PCAMatrix_balanced_bins_get, _swigfaiss.PCAMatrix_balanced_bins_set, doc=r""" try to distribute output eigenvectors in this many bins""")
+    mean = property(_swigfaiss.PCAMatrix_mean_get, _swigfaiss.PCAMatrix_mean_set, doc=r""" Mean, size d_in""")
+    eigenvalues = property(_swigfaiss.PCAMatrix_eigenvalues_get, _swigfaiss.PCAMatrix_eigenvalues_set, doc=r""" eigenvalues of covariance matrix (= squared singular values)""")
+    PCAMat = property(_swigfaiss.PCAMatrix_PCAMat_get, _swigfaiss.PCAMatrix_PCAMat_set, doc=r""" PCA matrix, size d_in * d_in""")
+
+    def __init__(self, d_in=0, d_out=0, eigen_power=0, random_rotation=False):
+        _swigfaiss.PCAMatrix_swiginit(self, _swigfaiss.new_PCAMatrix(d_in, d_out, eigen_power, random_rotation))
+
+    def train(self, n, x):
+        r"""
+        train on n vectors. If n < d_in then the eigenvector matrix
+        will be completed with 0s
+        """
+        return _swigfaiss.PCAMatrix_train(self, n, x)
+
+    def copy_from(self, other):
+        r""" copy pre-trained PCA matrix"""
+        return _swigfaiss.PCAMatrix_copy_from(self, other)
+
+    def prepare_Ab(self):
+        r""" called after mean, PCAMat and eigenvalues are computed"""
+        return _swigfaiss.PCAMatrix_prepare_Ab(self)
+    __swig_destroy__ = _swigfaiss.delete_PCAMatrix
+
+# Register PCAMatrix in _swigfaiss:
+_swigfaiss.PCAMatrix_swigregister(PCAMatrix)
+
+class ITQMatrix(LinearTransform):
+    r"""
+     ITQ implementation from
+
+        Iterative quantization: A procrustean approach to learning binary codes
+        for large-scale image retrieval,
+
+    Yunchao Gong, Svetlana Lazebnik, Albert Gordo, Florent Perronnin,
+    PAMI'12.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    max_iter = property(_swigfaiss.ITQMatrix_max_iter_get, _swigfaiss.ITQMatrix_max_iter_set)
+    seed = property(_swigfaiss.ITQMatrix_seed_get, _swigfaiss.ITQMatrix_seed_set)
+    init_rotation = property(_swigfaiss.ITQMatrix_init_rotation_get, _swigfaiss.ITQMatrix_init_rotation_set)
+
+    def __init__(self, d=0):
+        _swigfaiss.ITQMatrix_swiginit(self, _swigfaiss.new_ITQMatrix(d))
+
+    def train(self, n, x):
+        return _swigfaiss.ITQMatrix_train(self, n, x)
+    __swig_destroy__ = _swigfaiss.delete_ITQMatrix
+
+# Register ITQMatrix in _swigfaiss:
+_swigfaiss.ITQMatrix_swigregister(ITQMatrix)
+
+class ITQTransform(VectorTransform):
+    r""" The full ITQ transform, including normalizations and PCA transformation"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    mean = property(_swigfaiss.ITQTransform_mean_get, _swigfaiss.ITQTransform_mean_set)
+    do_pca = property(_swigfaiss.ITQTransform_do_pca_get, _swigfaiss.ITQTransform_do_pca_set)
+    itq = property(_swigfaiss.ITQTransform_itq_get, _swigfaiss.ITQTransform_itq_set)
+    max_train_per_dim = property(_swigfaiss.ITQTransform_max_train_per_dim_get, _swigfaiss.ITQTransform_max_train_per_dim_set, doc=r""" max training points per dimension""")
+    pca_then_itq = property(_swigfaiss.ITQTransform_pca_then_itq_get, _swigfaiss.ITQTransform_pca_then_itq_set)
+
+    def __init__(self, d_in=0, d_out=0, do_pca=False):
+        _swigfaiss.ITQTransform_swiginit(self, _swigfaiss.new_ITQTransform(d_in, d_out, do_pca))
+
+    def train(self, n, x):
+        return _swigfaiss.ITQTransform_train(self, n, x)
+
+    def apply_noalloc(self, n, x, xt):
+        return _swigfaiss.ITQTransform_apply_noalloc(self, n, x, xt)
+    __swig_destroy__ = _swigfaiss.delete_ITQTransform
+
+# Register ITQTransform in _swigfaiss:
+_swigfaiss.ITQTransform_swigregister(ITQTransform)
+
+class OPQMatrix(LinearTransform):
+    r"""
+     Applies a rotation to align the dimensions with a PQ to minimize
+     the reconstruction error. Can be used before an IndexPQ or an
+     IndexIVFPQ. The method is the non-parametric version described in:
+
+    "Optimized Product Quantization for Approximate Nearest Neighbor Search"
+    Tiezheng Ge, Kaiming He, Qifa Ke, Jian Sun, CVPR'13
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    M = property(_swigfaiss.OPQMatrix_M_get, _swigfaiss.OPQMatrix_M_set, doc=r""" nb of subquantizers""")
+    niter = property(_swigfaiss.OPQMatrix_niter_get, _swigfaiss.OPQMatrix_niter_set, doc=r""" Number of outer training iterations""")
+    niter_pq = property(_swigfaiss.OPQMatrix_niter_pq_get, _swigfaiss.OPQMatrix_niter_pq_set, doc=r""" Number of training iterations for the PQ""")
+    niter_pq_0 = property(_swigfaiss.OPQMatrix_niter_pq_0_get, _swigfaiss.OPQMatrix_niter_pq_0_set, doc=r""" same, for the first outer iteration""")
+    max_train_points = property(_swigfaiss.OPQMatrix_max_train_points_get, _swigfaiss.OPQMatrix_max_train_points_set, doc=r""" if there are too many training points, resample""")
+    verbose = property(_swigfaiss.OPQMatrix_verbose_get, _swigfaiss.OPQMatrix_verbose_set)
+    pq = property(_swigfaiss.OPQMatrix_pq_get, _swigfaiss.OPQMatrix_pq_set, doc=r"""
+    if non-NULL, use this product quantizer for training
+    should be constructed with (d_out, M, _)
+    """)
+
+    def __init__(self, d=0, M=1, d2=-1):
+        r""" if d2 != -1, output vectors of this dimension"""
+        _swigfaiss.OPQMatrix_swiginit(self, _swigfaiss.new_OPQMatrix(d, M, d2))
+
+    def train(self, n, x):
+        return _swigfaiss.OPQMatrix_train(self, n, x)
+    __swig_destroy__ = _swigfaiss.delete_OPQMatrix
+
+# Register OPQMatrix in _swigfaiss:
+_swigfaiss.OPQMatrix_swigregister(OPQMatrix)
+
+class RemapDimensionsTransform(VectorTransform):
+    r"""
+     remap dimensions for intput vectors, possibly inserting 0s
+    strictly speaking this is also a linear transform but we don't want
+    to compute it with matrix multiplies
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    map = property(_swigfaiss.RemapDimensionsTransform_map_get, _swigfaiss.RemapDimensionsTransform_map_set, doc=r"""
+    map from output dimension to input, size d_out
+    -1 -> set output to 0
+    """)
+
+    def apply_noalloc(self, n, x, xt):
+        return _swigfaiss.RemapDimensionsTransform_apply_noalloc(self, n, x, xt)
+
+    def reverse_transform(self, n, xt, x):
+        r""" reverse transform correct only when the mapping is a permutation"""
+        return _swigfaiss.RemapDimensionsTransform_reverse_transform(self, n, xt, x)
+
+    def __init__(self, *args):
+        _swigfaiss.RemapDimensionsTransform_swiginit(self, _swigfaiss.new_RemapDimensionsTransform(*args))
+    __swig_destroy__ = _swigfaiss.delete_RemapDimensionsTransform
+
+# Register RemapDimensionsTransform in _swigfaiss:
+_swigfaiss.RemapDimensionsTransform_swigregister(RemapDimensionsTransform)
+
+class NormalizationTransform(VectorTransform):
+    r""" per-vector normalization"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    norm = property(_swigfaiss.NormalizationTransform_norm_get, _swigfaiss.NormalizationTransform_norm_set)
+
+    def __init__(self, *args):
+        _swigfaiss.NormalizationTransform_swiginit(self, _swigfaiss.new_NormalizationTransform(*args))
+
+    def apply_noalloc(self, n, x, xt):
+        return _swigfaiss.NormalizationTransform_apply_noalloc(self, n, x, xt)
+
+    def reverse_transform(self, n, xt, x):
+        r""" Identity transform since norm is not revertible"""
+        return _swigfaiss.NormalizationTransform_reverse_transform(self, n, xt, x)
+    __swig_destroy__ = _swigfaiss.delete_NormalizationTransform
+
+# Register NormalizationTransform in _swigfaiss:
+_swigfaiss.NormalizationTransform_swigregister(NormalizationTransform)
+
+class CenteringTransform(VectorTransform):
+    r""" Subtract the mean of each component from the vectors."""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    mean = property(_swigfaiss.CenteringTransform_mean_get, _swigfaiss.CenteringTransform_mean_set, doc=r""" Mean, size d_in = d_out""")
+
+    def __init__(self, d=0):
+        _swigfaiss.CenteringTransform_swiginit(self, _swigfaiss.new_CenteringTransform(d))
+
+    def train(self, n, x):
+        r""" train on n vectors."""
+        return _swigfaiss.CenteringTransform_train(self, n, x)
+
+    def apply_noalloc(self, n, x, xt):
+        r""" subtract the mean"""
+        return _swigfaiss.CenteringTransform_apply_noalloc(self, n, x, xt)
+
+    def reverse_transform(self, n, xt, x):
+        r""" add the mean"""
+        return _swigfaiss.CenteringTransform_reverse_transform(self, n, xt, x)
+    __swig_destroy__ = _swigfaiss.delete_CenteringTransform
+
+# Register CenteringTransform in _swigfaiss:
+_swigfaiss.CenteringTransform_swigregister(CenteringTransform)
+
+class IndexPreTransform(Index):
+    r"""
+    Index that applies a LinearTransform transform on vectors before
+    handing them over to a sub-index
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    chain = property(_swigfaiss.IndexPreTransform_chain_get, _swigfaiss.IndexPreTransform_chain_set)
+    index = property(_swigfaiss.IndexPreTransform_index_get, _swigfaiss.IndexPreTransform_index_set, doc=r"""chain of tranforms""")
+    own_fields = property(_swigfaiss.IndexPreTransform_own_fields_get, _swigfaiss.IndexPreTransform_own_fields_set, doc=r"""the sub-index""")
+
+    def __init__(self, *args):
+        r"""
+        *Overload 1:*
+        whether pointers are deleted in destructor
+
+        |
+
+        *Overload 2:*
+         ltrans is the last transform before the index
+        """
+        _swigfaiss.IndexPreTransform_swiginit(self, _swigfaiss.new_IndexPreTransform(*args))
+
+    def prepend_transform(self, ltrans):
+        return _swigfaiss.IndexPreTransform_prepend_transform(self, ltrans)
+
+    def train(self, n, x):
+        return _swigfaiss.IndexPreTransform_train(self, n, x)
+
+    def add(self, n, x):
+        return _swigfaiss.IndexPreTransform_add(self, n, x)
+
+    def add_with_ids(self, n, x, xids):
+        return _swigfaiss.IndexPreTransform_add_with_ids(self, n, x, xids)
+
+    def reset(self):
+        return _swigfaiss.IndexPreTransform_reset(self)
+
+    def remove_ids(self, sel):
+        r""" removes IDs from the index. Not supported by all indexes."""
+        return _swigfaiss.IndexPreTransform_remove_ids(self, sel)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexPreTransform_search(self, n, x, k, distances, labels)
+
+    def range_search(self, n, x, radius, result):
+        return _swigfaiss.IndexPreTransform_range_search(self, n, x, radius, result)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.IndexPreTransform_reconstruct(self, key, recons)
+
+    def reconstruct_n(self, i0, ni, recons):
+        return _swigfaiss.IndexPreTransform_reconstruct_n(self, i0, ni, recons)
+
+    def search_and_reconstruct(self, n, x, k, distances, labels, recons):
+        return _swigfaiss.IndexPreTransform_search_and_reconstruct(self, n, x, k, distances, labels, recons)
+
+    def apply_chain(self, n, x):
+        r"""
+        apply the transforms in the chain. The returned float * may be
+        equal to x, otherwise it should be deallocated.
+        """
+        return _swigfaiss.IndexPreTransform_apply_chain(self, n, x)
+
+    def reverse_chain(self, n, xt, x):
+        r"""
+        Reverse the transforms in the chain. May not be implemented for
+        all transforms in the chain or may return approximate results.
+        """
+        return _swigfaiss.IndexPreTransform_reverse_chain(self, n, xt, x)
+
+    def get_distance_computer(self):
+        return _swigfaiss.IndexPreTransform_get_distance_computer(self)
+
+    def sa_code_size(self):
+        return _swigfaiss.IndexPreTransform_sa_code_size(self)
+
+    def sa_encode(self, n, x, bytes):
+        return _swigfaiss.IndexPreTransform_sa_encode(self, n, x, bytes)
+
+    def sa_decode(self, n, bytes, x):
+        return _swigfaiss.IndexPreTransform_sa_decode(self, n, bytes, x)
+    __swig_destroy__ = _swigfaiss.delete_IndexPreTransform
+
+# Register IndexPreTransform in _swigfaiss:
+_swigfaiss.IndexPreTransform_swigregister(IndexPreTransform)
+
+class IndexRefine(Index):
+    r"""
+    Index that queries in a base_index (a fast one) and refines the
+    results with an exact search, hopefully improving the results.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    base_index = property(_swigfaiss.IndexRefine_base_index_get, _swigfaiss.IndexRefine_base_index_set, doc=r""" faster index to pre-select the vectors that should be filtered""")
+    refine_index = property(_swigfaiss.IndexRefine_refine_index_get, _swigfaiss.IndexRefine_refine_index_set, doc=r""" refinement index""")
+    own_fields = property(_swigfaiss.IndexRefine_own_fields_get, _swigfaiss.IndexRefine_own_fields_set, doc=r""" should the base index be deallocated?""")
+    own_refine_index = property(_swigfaiss.IndexRefine_own_refine_index_get, _swigfaiss.IndexRefine_own_refine_index_set, doc=r""" same with the refinement index""")
+    k_factor = property(_swigfaiss.IndexRefine_k_factor_get, _swigfaiss.IndexRefine_k_factor_set, doc=r"""
+    factor between k requested in search and the k requested from
+    the base_index (should be >= 1)
+    """)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexRefine_swiginit(self, _swigfaiss.new_IndexRefine(*args))
+
+    def train(self, n, x):
+        return _swigfaiss.IndexRefine_train(self, n, x)
+
+    def add(self, n, x):
+        return _swigfaiss.IndexRefine_add(self, n, x)
+
+    def reset(self):
+        return _swigfaiss.IndexRefine_reset(self)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexRefine_search(self, n, x, k, distances, labels)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.IndexRefine_reconstruct(self, key, recons)
+
+    def sa_code_size(self):
+        return _swigfaiss.IndexRefine_sa_code_size(self)
+
+    def sa_encode(self, n, x, bytes):
+        return _swigfaiss.IndexRefine_sa_encode(self, n, x, bytes)
+
+    def sa_decode(self, n, bytes, x):
+        r"""
+        The sa_decode decodes from the index_refine, which is assumed to be more
+        accurate
+        """
+        return _swigfaiss.IndexRefine_sa_decode(self, n, bytes, x)
+    __swig_destroy__ = _swigfaiss.delete_IndexRefine
+
+# Register IndexRefine in _swigfaiss:
+_swigfaiss.IndexRefine_swigregister(IndexRefine)
+
+class IndexRefineFlat(IndexRefine):
+    r"""
+     Version where the refinement index is an IndexFlat. It has one additional
+    constructor that takes a table of elements to add to the flat refinement
+    index
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.IndexRefineFlat_swiginit(self, _swigfaiss.new_IndexRefineFlat(*args))
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexRefineFlat_search(self, n, x, k, distances, labels)
+    __swig_destroy__ = _swigfaiss.delete_IndexRefineFlat
+
+# Register IndexRefineFlat in _swigfaiss:
+_swigfaiss.IndexRefineFlat_swigregister(IndexRefineFlat)
+
+class IndexLSH(IndexFlatCodes):
+    r""" The sign of each vector component is put in a binary signature"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nbits = property(_swigfaiss.IndexLSH_nbits_get, _swigfaiss.IndexLSH_nbits_set, doc=r""" nb of bits per vector""")
+    rotate_data = property(_swigfaiss.IndexLSH_rotate_data_get, _swigfaiss.IndexLSH_rotate_data_set, doc=r""" whether to apply a random rotation to input""")
+    train_thresholds = property(_swigfaiss.IndexLSH_train_thresholds_get, _swigfaiss.IndexLSH_train_thresholds_set, doc=r""" whether we train thresholds or use 0""")
+    rrot = property(_swigfaiss.IndexLSH_rrot_get, _swigfaiss.IndexLSH_rrot_set, doc=r""" optional random rotation""")
+    thresholds = property(_swigfaiss.IndexLSH_thresholds_get, _swigfaiss.IndexLSH_thresholds_set, doc=r""" thresholds to compare with""")
+
+    def apply_preprocess(self, n, x):
+        r"""
+         Preprocesses and resizes the input to the size required to
+        binarize the data
+
+        :type x: float
+        :param x: input vectors, size n * d
+        :rtype: float
+        :return: output vectors, size n * bits. May be the same pointer
+                    as x, otherwise it should be deleted by the caller
+        """
+        return _swigfaiss.IndexLSH_apply_preprocess(self, n, x)
+
+    def train(self, n, x):
+        return _swigfaiss.IndexLSH_train(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexLSH_search(self, n, x, k, distances, labels)
+
+    def transfer_thresholds(self, vt):
+        r"""
+        transfer the thresholds to a pre-processing stage (and unset
+        train_thresholds)
+        """
+        return _swigfaiss.IndexLSH_transfer_thresholds(self, vt)
+    __swig_destroy__ = _swigfaiss.delete_IndexLSH
+
+    def __init__(self, *args):
+        _swigfaiss.IndexLSH_swiginit(self, _swigfaiss.new_IndexLSH(*args))
+
+    def sa_encode(self, n, x, bytes):
+        return _swigfaiss.IndexLSH_sa_encode(self, n, x, bytes)
+
+    def sa_decode(self, n, bytes, x):
+        return _swigfaiss.IndexLSH_sa_decode(self, n, bytes, x)
+
+# Register IndexLSH in _swigfaiss:
+_swigfaiss.IndexLSH_swigregister(IndexLSH)
+
+class SimulatedAnnealingParameters(object):
+    r""" parameters used for the simulated annealing method"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    init_temperature = property(_swigfaiss.SimulatedAnnealingParameters_init_temperature_get, _swigfaiss.SimulatedAnnealingParameters_init_temperature_set)
+    temperature_decay = property(_swigfaiss.SimulatedAnnealingParameters_temperature_decay_get, _swigfaiss.SimulatedAnnealingParameters_temperature_decay_set)
+    n_iter = property(_swigfaiss.SimulatedAnnealingParameters_n_iter_get, _swigfaiss.SimulatedAnnealingParameters_n_iter_set)
+    n_redo = property(_swigfaiss.SimulatedAnnealingParameters_n_redo_get, _swigfaiss.SimulatedAnnealingParameters_n_redo_set)
+    seed = property(_swigfaiss.SimulatedAnnealingParameters_seed_get, _swigfaiss.SimulatedAnnealingParameters_seed_set)
+    verbose = property(_swigfaiss.SimulatedAnnealingParameters_verbose_get, _swigfaiss.SimulatedAnnealingParameters_verbose_set)
+    only_bit_flips = property(_swigfaiss.SimulatedAnnealingParameters_only_bit_flips_get, _swigfaiss.SimulatedAnnealingParameters_only_bit_flips_set)
+    init_random = property(_swigfaiss.SimulatedAnnealingParameters_init_random_get, _swigfaiss.SimulatedAnnealingParameters_init_random_set)
+
+    def __init__(self):
+        _swigfaiss.SimulatedAnnealingParameters_swiginit(self, _swigfaiss.new_SimulatedAnnealingParameters())
+    __swig_destroy__ = _swigfaiss.delete_SimulatedAnnealingParameters
+
+# Register SimulatedAnnealingParameters in _swigfaiss:
+_swigfaiss.SimulatedAnnealingParameters_swigregister(SimulatedAnnealingParameters)
+
+class PermutationObjective(object):
+    r""" abstract class for the loss function"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    n = property(_swigfaiss.PermutationObjective_n_get, _swigfaiss.PermutationObjective_n_set)
+
+    def compute_cost(self, perm):
+        return _swigfaiss.PermutationObjective_compute_cost(self, perm)
+
+    def cost_update(self, perm, iw, jw):
+        return _swigfaiss.PermutationObjective_cost_update(self, perm, iw, jw)
+    __swig_destroy__ = _swigfaiss.delete_PermutationObjective
+
+# Register PermutationObjective in _swigfaiss:
+_swigfaiss.PermutationObjective_swigregister(PermutationObjective)
+
+class ReproduceDistancesObjective(PermutationObjective):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    dis_weight_factor = property(_swigfaiss.ReproduceDistancesObjective_dis_weight_factor_get, _swigfaiss.ReproduceDistancesObjective_dis_weight_factor_set)
+
+    @staticmethod
+    def sqr(x):
+        return _swigfaiss.ReproduceDistancesObjective_sqr(x)
+
+    def dis_weight(self, x):
+        return _swigfaiss.ReproduceDistancesObjective_dis_weight(self, x)
+    source_dis = property(_swigfaiss.ReproduceDistancesObjective_source_dis_get, _swigfaiss.ReproduceDistancesObjective_source_dis_set, doc=r""" "real" corrected distances (size n^2)""")
+    target_dis = property(_swigfaiss.ReproduceDistancesObjective_target_dis_get, _swigfaiss.ReproduceDistancesObjective_target_dis_set, doc=r""" wanted distances (size n^2)""")
+    weights = property(_swigfaiss.ReproduceDistancesObjective_weights_get, _swigfaiss.ReproduceDistancesObjective_weights_set, doc=r""" weights for each distance (size n^2)""")
+
+    def get_source_dis(self, i, j):
+        return _swigfaiss.ReproduceDistancesObjective_get_source_dis(self, i, j)
+
+    def compute_cost(self, perm):
+        return _swigfaiss.ReproduceDistancesObjective_compute_cost(self, perm)
+
+    def cost_update(self, perm, iw, jw):
+        return _swigfaiss.ReproduceDistancesObjective_cost_update(self, perm, iw, jw)
+
+    def __init__(self, n, source_dis_in, target_dis_in, dis_weight_factor):
+        _swigfaiss.ReproduceDistancesObjective_swiginit(self, _swigfaiss.new_ReproduceDistancesObjective(n, source_dis_in, target_dis_in, dis_weight_factor))
+
+    @staticmethod
+    def compute_mean_stdev(tab, n2, mean_out, stddev_out):
+        return _swigfaiss.ReproduceDistancesObjective_compute_mean_stdev(tab, n2, mean_out, stddev_out)
+
+    def set_affine_target_dis(self, source_dis_in):
+        return _swigfaiss.ReproduceDistancesObjective_set_affine_target_dis(self, source_dis_in)
+    __swig_destroy__ = _swigfaiss.delete_ReproduceDistancesObjective
+
+# Register ReproduceDistancesObjective in _swigfaiss:
+_swigfaiss.ReproduceDistancesObjective_swigregister(ReproduceDistancesObjective)
+
+def ReproduceDistancesObjective_sqr(x):
+    return _swigfaiss.ReproduceDistancesObjective_sqr(x)
+
+def ReproduceDistancesObjective_compute_mean_stdev(tab, n2, mean_out, stddev_out):
+    return _swigfaiss.ReproduceDistancesObjective_compute_mean_stdev(tab, n2, mean_out, stddev_out)
+
+class SimulatedAnnealingOptimizer(SimulatedAnnealingParameters):
+    r""" Simulated annealing optimization algorithm for permutations."""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    obj = property(_swigfaiss.SimulatedAnnealingOptimizer_obj_get, _swigfaiss.SimulatedAnnealingOptimizer_obj_set)
+    n = property(_swigfaiss.SimulatedAnnealingOptimizer_n_get, _swigfaiss.SimulatedAnnealingOptimizer_n_set, doc=r""" size of the permutation""")
+    logfile = property(_swigfaiss.SimulatedAnnealingOptimizer_logfile_get, _swigfaiss.SimulatedAnnealingOptimizer_logfile_set)
+
+    def __init__(self, obj, p):
+        r""" logs values of the cost function"""
+        _swigfaiss.SimulatedAnnealingOptimizer_swiginit(self, _swigfaiss.new_SimulatedAnnealingOptimizer(obj, p))
+    rnd = property(_swigfaiss.SimulatedAnnealingOptimizer_rnd_get, _swigfaiss.SimulatedAnnealingOptimizer_rnd_set)
+    init_cost = property(_swigfaiss.SimulatedAnnealingOptimizer_init_cost_get, _swigfaiss.SimulatedAnnealingOptimizer_init_cost_set, doc=r""" remember initial cost of optimization""")
+
+    def optimize(self, perm):
+        return _swigfaiss.SimulatedAnnealingOptimizer_optimize(self, perm)
+
+    def run_optimization(self, best_perm):
+        return _swigfaiss.SimulatedAnnealingOptimizer_run_optimization(self, best_perm)
+    __swig_destroy__ = _swigfaiss.delete_SimulatedAnnealingOptimizer
+
+# Register SimulatedAnnealingOptimizer in _swigfaiss:
+_swigfaiss.SimulatedAnnealingOptimizer_swigregister(SimulatedAnnealingOptimizer)
+
+class PolysemousTraining(SimulatedAnnealingParameters):
+    r""" optimizes the order of indices in a ProductQuantizer"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    OT_None = _swigfaiss.PolysemousTraining_OT_None
+    OT_ReproduceDistances_affine = _swigfaiss.PolysemousTraining_OT_ReproduceDistances_affine
+    r""" default"""
+    OT_Ranking_weighted_diff = _swigfaiss.PolysemousTraining_OT_Ranking_weighted_diff
+    r"""
+    same as _2, but use rank of y+ - rank of
+    y-
+    """
+    optimization_type = property(_swigfaiss.PolysemousTraining_optimization_type_get, _swigfaiss.PolysemousTraining_optimization_type_set)
+    ntrain_permutation = property(_swigfaiss.PolysemousTraining_ntrain_permutation_get, _swigfaiss.PolysemousTraining_ntrain_permutation_set, doc=r"""
+     use 1/4 of the training points for the optimization, with
+    max. ntrain_permutation. If ntrain_permutation == 0: train on
+    centroids
+    """)
+    dis_weight_factor = property(_swigfaiss.PolysemousTraining_dis_weight_factor_get, _swigfaiss.PolysemousTraining_dis_weight_factor_set, doc=r""" decay of exp that weights distance loss""")
+    max_memory = property(_swigfaiss.PolysemousTraining_max_memory_get, _swigfaiss.PolysemousTraining_max_memory_set, doc=r""" refuse to train if it would require more than that amount of RAM""")
+    log_pattern = property(_swigfaiss.PolysemousTraining_log_pattern_get, _swigfaiss.PolysemousTraining_log_pattern_set)
+
+    def __init__(self):
+        _swigfaiss.PolysemousTraining_swiginit(self, _swigfaiss.new_PolysemousTraining())
+
+    def optimize_pq_for_hamming(self, pq, n, x):
+        r"""
+        reorder the centroids so that the Hamming distance becomes a
+        good approximation of the SDC distance (called by train)
+        """
+        return _swigfaiss.PolysemousTraining_optimize_pq_for_hamming(self, pq, n, x)
+
+    def optimize_ranking(self, pq, n, x):
+        r""" called by optimize_pq_for_hamming"""
+        return _swigfaiss.PolysemousTraining_optimize_ranking(self, pq, n, x)
+
+    def optimize_reproduce_distances(self, pq):
+        r""" called by optimize_pq_for_hamming"""
+        return _swigfaiss.PolysemousTraining_optimize_reproduce_distances(self, pq)
+
+    def memory_usage_per_thread(self, pq):
+        r""" make sure we don't blow up the memory"""
+        return _swigfaiss.PolysemousTraining_memory_usage_per_thread(self, pq)
+    __swig_destroy__ = _swigfaiss.delete_PolysemousTraining
+
+# Register PolysemousTraining in _swigfaiss:
+_swigfaiss.PolysemousTraining_swigregister(PolysemousTraining)
+
+class IndexPQ(IndexFlatCodes):
+    r"""
+     Index based on a product quantizer. Stored vectors are
+    approximated by PQ codes.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    pq = property(_swigfaiss.IndexPQ_pq_get, _swigfaiss.IndexPQ_pq_set, doc=r""" The product quantizer used to encode the vectors""")
+
+    def __init__(self, *args):
+        _swigfaiss.IndexPQ_swiginit(self, _swigfaiss.new_IndexPQ(*args))
+
+    def train(self, n, x):
+        return _swigfaiss.IndexPQ_train(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexPQ_search(self, n, x, k, distances, labels)
+
+    def sa_encode(self, n, x, bytes):
+        return _swigfaiss.IndexPQ_sa_encode(self, n, x, bytes)
+
+    def sa_decode(self, n, bytes, x):
+        return _swigfaiss.IndexPQ_sa_decode(self, n, bytes, x)
+
+    def get_distance_computer(self):
+        return _swigfaiss.IndexPQ_get_distance_computer(self)
+    do_polysemous_training = property(_swigfaiss.IndexPQ_do_polysemous_training_get, _swigfaiss.IndexPQ_do_polysemous_training_set, doc=r""" false = standard PQ""")
+    polysemous_training = property(_swigfaiss.IndexPQ_polysemous_training_get, _swigfaiss.IndexPQ_polysemous_training_set, doc=r""" parameters used for the polysemous training""")
+    ST_PQ = _swigfaiss.IndexPQ_ST_PQ
+    r""" asymmetric product quantizer (default)"""
+    ST_HE = _swigfaiss.IndexPQ_ST_HE
+    r""" Hamming distance on codes"""
+    ST_generalized_HE = _swigfaiss.IndexPQ_ST_generalized_HE
+    r""" nb of same codes"""
+    ST_SDC = _swigfaiss.IndexPQ_ST_SDC
+    r""" symmetric product quantizer (SDC)"""
+    ST_polysemous = _swigfaiss.IndexPQ_ST_polysemous
+    r""" HE filter (using ht) + PQ combination"""
+    ST_polysemous_generalize = _swigfaiss.IndexPQ_ST_polysemous_generalize
+    r""" Filter on generalized Hamming"""
+    search_type = property(_swigfaiss.IndexPQ_search_type_get, _swigfaiss.IndexPQ_search_type_set)
+    encode_signs = property(_swigfaiss.IndexPQ_encode_signs_get, _swigfaiss.IndexPQ_encode_signs_set)
+    polysemous_ht = property(_swigfaiss.IndexPQ_polysemous_ht_get, _swigfaiss.IndexPQ_polysemous_ht_set, doc=r""" Hamming threshold used for polysemy""")
+
+    def search_core_polysemous(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexPQ_search_core_polysemous(self, n, x, k, distances, labels)
+
+    def hamming_distance_histogram(self, n, x, nb, xb, dist_histogram):
+        r"""
+        prepare query for a polysemous search, but instead of
+        computing the result, just get the histogram of Hamming
+        distances. May be computed on a provided dataset if xb != NULL
+        :type dist_histogram: int
+        :param dist_histogram: (M * nbits + 1)
+        """
+        return _swigfaiss.IndexPQ_hamming_distance_histogram(self, n, x, nb, xb, dist_histogram)
+
+    def hamming_distance_table(self, n, x, dis):
+        r"""
+         compute pairwise distances between queries and database
+
+        :type n: int
+        :param n:    nb of query vectors
+        :type x: float
+        :param x:    query vector, size n * d
+        :type dis: int
+        :param dis:  output distances, size n * ntotal
+        """
+        return _swigfaiss.IndexPQ_hamming_distance_table(self, n, x, dis)
+    __swig_destroy__ = _swigfaiss.delete_IndexPQ
+
+# Register IndexPQ in _swigfaiss:
+_swigfaiss.IndexPQ_swigregister(IndexPQ)
+
+class IndexPQStats(object):
+    r"""
+    statistics are robust to internal threading, but not if
+    IndexPQ::search is called by multiple threads
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nq = property(_swigfaiss.IndexPQStats_nq_get, _swigfaiss.IndexPQStats_nq_set)
+    ncode = property(_swigfaiss.IndexPQStats_ncode_get, _swigfaiss.IndexPQStats_ncode_set)
+    n_hamming_pass = property(_swigfaiss.IndexPQStats_n_hamming_pass_get, _swigfaiss.IndexPQStats_n_hamming_pass_set)
+
+    def __init__(self):
+        _swigfaiss.IndexPQStats_swiginit(self, _swigfaiss.new_IndexPQStats())
+
+    def reset(self):
+        return _swigfaiss.IndexPQStats_reset(self)
+    __swig_destroy__ = _swigfaiss.delete_IndexPQStats
+
+# Register IndexPQStats in _swigfaiss:
+_swigfaiss.IndexPQStats_swigregister(IndexPQStats)
+
+class MultiIndexQuantizer(Index):
+    r"""
+    Quantizer where centroids are virtual: they are the Cartesian
+    product of sub-centroids.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    pq = property(_swigfaiss.MultiIndexQuantizer_pq_get, _swigfaiss.MultiIndexQuantizer_pq_set)
+
+    def train(self, n, x):
+        return _swigfaiss.MultiIndexQuantizer_train(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.MultiIndexQuantizer_search(self, n, x, k, distances, labels)
+
+    def add(self, n, x):
+        r""" add and reset will crash at runtime"""
+        return _swigfaiss.MultiIndexQuantizer_add(self, n, x)
+
+    def reset(self):
+        return _swigfaiss.MultiIndexQuantizer_reset(self)
+
+    def __init__(self, *args):
+        _swigfaiss.MultiIndexQuantizer_swiginit(self, _swigfaiss.new_MultiIndexQuantizer(*args))
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.MultiIndexQuantizer_reconstruct(self, key, recons)
+    __swig_destroy__ = _swigfaiss.delete_MultiIndexQuantizer
+
+# Register MultiIndexQuantizer in _swigfaiss:
+_swigfaiss.MultiIndexQuantizer_swigregister(MultiIndexQuantizer)
+
+class MultiIndexQuantizer2(MultiIndexQuantizer):
+    r""" MultiIndexQuantizer where the PQ assignmnet is performed by sub-indexes"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    assign_indexes = property(_swigfaiss.MultiIndexQuantizer2_assign_indexes_get, _swigfaiss.MultiIndexQuantizer2_assign_indexes_set, doc=r""" M Indexes on d / M dimensions""")
+    own_fields = property(_swigfaiss.MultiIndexQuantizer2_own_fields_get, _swigfaiss.MultiIndexQuantizer2_own_fields_set)
+
+    def __init__(self, *args):
+        _swigfaiss.MultiIndexQuantizer2_swiginit(self, _swigfaiss.new_MultiIndexQuantizer2(*args))
+
+    def train(self, n, x):
+        return _swigfaiss.MultiIndexQuantizer2_train(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.MultiIndexQuantizer2_search(self, n, x, k, distances, labels)
+    __swig_destroy__ = _swigfaiss.delete_MultiIndexQuantizer2
+
+# Register MultiIndexQuantizer2 in _swigfaiss:
+_swigfaiss.MultiIndexQuantizer2_swigregister(MultiIndexQuantizer2)
+
+class IndexAdditiveQuantizer(IndexFlatCodes):
+    r""" Abstract class for additive quantizers. The search functions are in common."""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    aq = property(_swigfaiss.IndexAdditiveQuantizer_aq_get, _swigfaiss.IndexAdditiveQuantizer_aq_set)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexAdditiveQuantizer_swiginit(self, _swigfaiss.new_IndexAdditiveQuantizer(*args))
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexAdditiveQuantizer_search(self, n, x, k, distances, labels)
+
+    def sa_encode(self, n, x, bytes):
+        return _swigfaiss.IndexAdditiveQuantizer_sa_encode(self, n, x, bytes)
+
+    def sa_decode(self, n, bytes, x):
+        return _swigfaiss.IndexAdditiveQuantizer_sa_decode(self, n, bytes, x)
+    __swig_destroy__ = _swigfaiss.delete_IndexAdditiveQuantizer
+
+# Register IndexAdditiveQuantizer in _swigfaiss:
+_swigfaiss.IndexAdditiveQuantizer_swigregister(IndexAdditiveQuantizer)
+
+class IndexResidualQuantizer(IndexAdditiveQuantizer):
+    r"""
+     Index based on a residual quantizer. Stored vectors are
+    approximated by residual quantization codes.
+    Can also be used as a codec
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    rq = property(_swigfaiss.IndexResidualQuantizer_rq_get, _swigfaiss.IndexResidualQuantizer_rq_set, doc=r""" The residual quantizer used to encode the vectors""")
+
+    def __init__(self, *args):
+        _swigfaiss.IndexResidualQuantizer_swiginit(self, _swigfaiss.new_IndexResidualQuantizer(*args))
+
+    def train(self, n, x):
+        return _swigfaiss.IndexResidualQuantizer_train(self, n, x)
+    __swig_destroy__ = _swigfaiss.delete_IndexResidualQuantizer
+
+# Register IndexResidualQuantizer in _swigfaiss:
+_swigfaiss.IndexResidualQuantizer_swigregister(IndexResidualQuantizer)
+
+class IndexLocalSearchQuantizer(IndexAdditiveQuantizer):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    lsq = property(_swigfaiss.IndexLocalSearchQuantizer_lsq_get, _swigfaiss.IndexLocalSearchQuantizer_lsq_set)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexLocalSearchQuantizer_swiginit(self, _swigfaiss.new_IndexLocalSearchQuantizer(*args))
+
+    def train(self, n, x):
+        return _swigfaiss.IndexLocalSearchQuantizer_train(self, n, x)
+    __swig_destroy__ = _swigfaiss.delete_IndexLocalSearchQuantizer
+
+# Register IndexLocalSearchQuantizer in _swigfaiss:
+_swigfaiss.IndexLocalSearchQuantizer_swigregister(IndexLocalSearchQuantizer)
+
+class AdditiveCoarseQuantizer(Index):
+    r"""
+     A "virtual" index where the elements are the residual quantizer centroids.
+
+    Intended for use as a coarse quantizer in an IndexIVF.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    aq = property(_swigfaiss.AdditiveCoarseQuantizer_aq_get, _swigfaiss.AdditiveCoarseQuantizer_aq_set)
+
+    def __init__(self, *args):
+        _swigfaiss.AdditiveCoarseQuantizer_swiginit(self, _swigfaiss.new_AdditiveCoarseQuantizer(*args))
+    centroid_norms = property(_swigfaiss.AdditiveCoarseQuantizer_centroid_norms_get, _swigfaiss.AdditiveCoarseQuantizer_centroid_norms_set, doc=r""" norms of centroids, useful for knn-search""")
+
+    def add(self, n, x):
+        r""" N/A"""
+        return _swigfaiss.AdditiveCoarseQuantizer_add(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.AdditiveCoarseQuantizer_search(self, n, x, k, distances, labels)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.AdditiveCoarseQuantizer_reconstruct(self, key, recons)
+
+    def train(self, n, x):
+        return _swigfaiss.AdditiveCoarseQuantizer_train(self, n, x)
+
+    def reset(self):
+        r""" N/A"""
+        return _swigfaiss.AdditiveCoarseQuantizer_reset(self)
+    __swig_destroy__ = _swigfaiss.delete_AdditiveCoarseQuantizer
+
+# Register AdditiveCoarseQuantizer in _swigfaiss:
+_swigfaiss.AdditiveCoarseQuantizer_swigregister(AdditiveCoarseQuantizer)
+
+class ResidualCoarseQuantizer(AdditiveCoarseQuantizer):
+    r"""
+     The ResidualCoarseQuantizer is a bit specialized compared to the
+    default AdditiveCoarseQuantizer because it can use a beam search
+    at search time (slow but may be useful for very large vocabularies)
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    rq = property(_swigfaiss.ResidualCoarseQuantizer_rq_get, _swigfaiss.ResidualCoarseQuantizer_rq_set, doc=r""" The residual quantizer used to encode the vectors""")
+    beam_factor = property(_swigfaiss.ResidualCoarseQuantizer_beam_factor_get, _swigfaiss.ResidualCoarseQuantizer_beam_factor_set, doc=r"""
+    factor between the beam size and the search k
+    if negative, use exact search-to-centroid
+    """)
+
+    def set_beam_factor(self, new_beam_factor):
+        r""" computes centroid norms if required"""
+        return _swigfaiss.ResidualCoarseQuantizer_set_beam_factor(self, new_beam_factor)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.ResidualCoarseQuantizer_search(self, n, x, k, distances, labels)
+
+    def __init__(self, *args):
+        _swigfaiss.ResidualCoarseQuantizer_swiginit(self, _swigfaiss.new_ResidualCoarseQuantizer(*args))
+    __swig_destroy__ = _swigfaiss.delete_ResidualCoarseQuantizer
+
+# Register ResidualCoarseQuantizer in _swigfaiss:
+_swigfaiss.ResidualCoarseQuantizer_swigregister(ResidualCoarseQuantizer)
+
+class LocalSearchCoarseQuantizer(AdditiveCoarseQuantizer):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    lsq = property(_swigfaiss.LocalSearchCoarseQuantizer_lsq_get, _swigfaiss.LocalSearchCoarseQuantizer_lsq_set, doc=r""" The residual quantizer used to encode the vectors""")
+
+    def __init__(self, *args):
+        _swigfaiss.LocalSearchCoarseQuantizer_swiginit(self, _swigfaiss.new_LocalSearchCoarseQuantizer(*args))
+    __swig_destroy__ = _swigfaiss.delete_LocalSearchCoarseQuantizer
+
+# Register LocalSearchCoarseQuantizer in _swigfaiss:
+_swigfaiss.LocalSearchCoarseQuantizer_swigregister(LocalSearchCoarseQuantizer)
+
+class IOReader(object):
+    r"""
+    Copyright (c) Facebook, Inc. and its affiliates.
+
+    This source code is licensed under the MIT license found in the
+    LICENSE file in the root directory of this source tree.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    name = property(_swigfaiss.IOReader_name_get, _swigfaiss.IOReader_name_set)
+
+    def __call__(self, ptr, size, nitems):
+        return _swigfaiss.IOReader___call__(self, ptr, size, nitems)
+
+    def fileno(self):
+        return _swigfaiss.IOReader_fileno(self)
+    __swig_destroy__ = _swigfaiss.delete_IOReader
+
+# Register IOReader in _swigfaiss:
+_swigfaiss.IOReader_swigregister(IOReader)
+
+class IOWriter(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    name = property(_swigfaiss.IOWriter_name_get, _swigfaiss.IOWriter_name_set)
+
+    def __call__(self, ptr, size, nitems):
+        return _swigfaiss.IOWriter___call__(self, ptr, size, nitems)
+
+    def fileno(self):
+        return _swigfaiss.IOWriter_fileno(self)
+    __swig_destroy__ = _swigfaiss.delete_IOWriter
+
+# Register IOWriter in _swigfaiss:
+_swigfaiss.IOWriter_swigregister(IOWriter)
+
+class VectorIOReader(IOReader):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    data = property(_swigfaiss.VectorIOReader_data_get, _swigfaiss.VectorIOReader_data_set)
+    rp = property(_swigfaiss.VectorIOReader_rp_get, _swigfaiss.VectorIOReader_rp_set)
+
+    def __call__(self, ptr, size, nitems):
+        return _swigfaiss.VectorIOReader___call__(self, ptr, size, nitems)
+
+    def __init__(self):
+        _swigfaiss.VectorIOReader_swiginit(self, _swigfaiss.new_VectorIOReader())
+    __swig_destroy__ = _swigfaiss.delete_VectorIOReader
+
+# Register VectorIOReader in _swigfaiss:
+_swigfaiss.VectorIOReader_swigregister(VectorIOReader)
+
+class VectorIOWriter(IOWriter):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    data = property(_swigfaiss.VectorIOWriter_data_get, _swigfaiss.VectorIOWriter_data_set)
+
+    def __call__(self, ptr, size, nitems):
+        return _swigfaiss.VectorIOWriter___call__(self, ptr, size, nitems)
+
+    def __init__(self):
+        _swigfaiss.VectorIOWriter_swiginit(self, _swigfaiss.new_VectorIOWriter())
+    __swig_destroy__ = _swigfaiss.delete_VectorIOWriter
+
+# Register VectorIOWriter in _swigfaiss:
+_swigfaiss.VectorIOWriter_swigregister(VectorIOWriter)
+
+class FileIOReader(IOReader):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    f = property(_swigfaiss.FileIOReader_f_get, _swigfaiss.FileIOReader_f_set)
+    need_close = property(_swigfaiss.FileIOReader_need_close_get, _swigfaiss.FileIOReader_need_close_set)
+
+    def __init__(self, *args):
+        _swigfaiss.FileIOReader_swiginit(self, _swigfaiss.new_FileIOReader(*args))
+    __swig_destroy__ = _swigfaiss.delete_FileIOReader
+
+    def __call__(self, ptr, size, nitems):
+        return _swigfaiss.FileIOReader___call__(self, ptr, size, nitems)
+
+    def fileno(self):
+        return _swigfaiss.FileIOReader_fileno(self)
+
+# Register FileIOReader in _swigfaiss:
+_swigfaiss.FileIOReader_swigregister(FileIOReader)
+
+class FileIOWriter(IOWriter):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    f = property(_swigfaiss.FileIOWriter_f_get, _swigfaiss.FileIOWriter_f_set)
+    need_close = property(_swigfaiss.FileIOWriter_need_close_get, _swigfaiss.FileIOWriter_need_close_set)
+
+    def __init__(self, *args):
+        _swigfaiss.FileIOWriter_swiginit(self, _swigfaiss.new_FileIOWriter(*args))
+    __swig_destroy__ = _swigfaiss.delete_FileIOWriter
+
+    def __call__(self, ptr, size, nitems):
+        return _swigfaiss.FileIOWriter___call__(self, ptr, size, nitems)
+
+    def fileno(self):
+        return _swigfaiss.FileIOWriter_fileno(self)
+
+# Register FileIOWriter in _swigfaiss:
+_swigfaiss.FileIOWriter_swigregister(FileIOWriter)
+
+class BufferedIOReader(IOReader):
+    r""" wraps an ioreader to make buffered reads to avoid too small reads"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    reader = property(_swigfaiss.BufferedIOReader_reader_get, _swigfaiss.BufferedIOReader_reader_set)
+    bsz = property(_swigfaiss.BufferedIOReader_bsz_get, _swigfaiss.BufferedIOReader_bsz_set)
+    ofs = property(_swigfaiss.BufferedIOReader_ofs_get, _swigfaiss.BufferedIOReader_ofs_set, doc=r""" offset in input stream""")
+    ofs2 = property(_swigfaiss.BufferedIOReader_ofs2_get, _swigfaiss.BufferedIOReader_ofs2_set, doc=r""" number of bytes returned to caller""")
+    b0 = property(_swigfaiss.BufferedIOReader_b0_get, _swigfaiss.BufferedIOReader_b0_set, doc=r""" range of available bytes in the buffer""")
+    b1 = property(_swigfaiss.BufferedIOReader_b1_get, _swigfaiss.BufferedIOReader_b1_set)
+    buffer = property(_swigfaiss.BufferedIOReader_buffer_get, _swigfaiss.BufferedIOReader_buffer_set)
+
+    def __init__(self, *args):
+        r"""
+        :type bsz: int, optional
+        :param bsz:    buffer size (bytes). Reads will be done by batched of
+                          this size
+        """
+        _swigfaiss.BufferedIOReader_swiginit(self, _swigfaiss.new_BufferedIOReader(*args))
+
+    def __call__(self, ptr, size, nitems):
+        return _swigfaiss.BufferedIOReader___call__(self, ptr, size, nitems)
+    __swig_destroy__ = _swigfaiss.delete_BufferedIOReader
+
+# Register BufferedIOReader in _swigfaiss:
+_swigfaiss.BufferedIOReader_swigregister(BufferedIOReader)
+
+class BufferedIOWriter(IOWriter):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    writer = property(_swigfaiss.BufferedIOWriter_writer_get, _swigfaiss.BufferedIOWriter_writer_set)
+    bsz = property(_swigfaiss.BufferedIOWriter_bsz_get, _swigfaiss.BufferedIOWriter_bsz_set)
+    ofs = property(_swigfaiss.BufferedIOWriter_ofs_get, _swigfaiss.BufferedIOWriter_ofs_set)
+    ofs2 = property(_swigfaiss.BufferedIOWriter_ofs2_get, _swigfaiss.BufferedIOWriter_ofs2_set, doc=r""" number of bytes received from caller""")
+    b0 = property(_swigfaiss.BufferedIOWriter_b0_get, _swigfaiss.BufferedIOWriter_b0_set, doc=r""" amount of data in buffer""")
+    buffer = property(_swigfaiss.BufferedIOWriter_buffer_get, _swigfaiss.BufferedIOWriter_buffer_set)
+
+    def __init__(self, *args):
+        _swigfaiss.BufferedIOWriter_swiginit(self, _swigfaiss.new_BufferedIOWriter(*args))
+
+    def __call__(self, ptr, size, nitems):
+        return _swigfaiss.BufferedIOWriter___call__(self, ptr, size, nitems)
+    __swig_destroy__ = _swigfaiss.delete_BufferedIOWriter
+
+# Register BufferedIOWriter in _swigfaiss:
+_swigfaiss.BufferedIOWriter_swigregister(BufferedIOWriter)
+
+
+def fourcc(*args):
+    return _swigfaiss.fourcc(*args)
+
+def fourcc_inv(*args):
+    return _swigfaiss.fourcc_inv(*args)
+
+def fourcc_inv_printable(x):
+    return _swigfaiss.fourcc_inv_printable(x)
+class InvertedLists(object):
+    r"""
+     Table of inverted lists
+    multithreading rules:
+    - concurrent read accesses are allowed
+    - concurrent update accesses are allowed
+    - for resize and add_entries, only concurrent access to different lists
+      are allowed
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    nlist = property(_swigfaiss.InvertedLists_nlist_get, _swigfaiss.InvertedLists_nlist_set, doc=r""" number of possible key values""")
+    code_size = property(_swigfaiss.InvertedLists_code_size_get, _swigfaiss.InvertedLists_code_size_set, doc=r""" code size per vector in bytes""")
+    INVALID_CODE_SIZE = _swigfaiss.InvertedLists_INVALID_CODE_SIZE
+    r"""
+    used for BlockInvertedLists, where the codes are packed into groups
+    and the individual code size is meaningless
+    """
+
+    def list_size(self, list_no):
+        r""" get the size of a list"""
+        return _swigfaiss.InvertedLists_list_size(self, list_no)
+
+    def get_codes(self, list_no):
+        r"""
+         get the codes for an inverted list
+        must be released by release_codes
+
+        :rtype: uint8_t
+        :return: codes    size list_size * code_size
+        """
+        return _swigfaiss.InvertedLists_get_codes(self, list_no)
+
+    def get_ids(self, list_no):
+        r"""
+         get the ids for an inverted list
+        must be released by release_ids
+
+        :rtype: int
+        :return: ids      size list_size
+        """
+        return _swigfaiss.InvertedLists_get_ids(self, list_no)
+
+    def release_codes(self, list_no, codes):
+        r""" release codes returned by get_codes (default implementation is nop"""
+        return _swigfaiss.InvertedLists_release_codes(self, list_no, codes)
+
+    def release_ids(self, list_no, ids):
+        r""" release ids returned by get_ids"""
+        return _swigfaiss.InvertedLists_release_ids(self, list_no, ids)
+
+    def get_single_id(self, list_no, offset):
+        r"""
+        :rtype: int
+        :return: a single id in an inverted list
+        """
+        return _swigfaiss.InvertedLists_get_single_id(self, list_no, offset)
+
+    def get_single_code(self, list_no, offset):
+        r"""
+        :rtype: uint8_t
+        :return: a single code in an inverted list
+            (should be deallocated with release_codes)
+        """
+        return _swigfaiss.InvertedLists_get_single_code(self, list_no, offset)
+
+    def prefetch_lists(self, list_nos, nlist):
+        r"""
+        prepare the following lists (default does nothing)
+        a list can be -1 hence the signed long
+        """
+        return _swigfaiss.InvertedLists_prefetch_lists(self, list_nos, nlist)
+
+    def add_entry(self, list_no, theid, code):
+        r""" add one entry to an inverted list"""
+        return _swigfaiss.InvertedLists_add_entry(self, list_no, theid, code)
+
+    def add_entries(self, list_no, n_entry, ids, code):
+        return _swigfaiss.InvertedLists_add_entries(self, list_no, n_entry, ids, code)
+
+    def update_entry(self, list_no, offset, id, code):
+        return _swigfaiss.InvertedLists_update_entry(self, list_no, offset, id, code)
+
+    def update_entries(self, list_no, offset, n_entry, ids, code):
+        return _swigfaiss.InvertedLists_update_entries(self, list_no, offset, n_entry, ids, code)
+
+    def resize(self, list_no, new_size):
+        return _swigfaiss.InvertedLists_resize(self, list_no, new_size)
+
+    def reset(self):
+        return _swigfaiss.InvertedLists_reset(self)
+
+    def merge_from(self, oivf, add_id):
+        r""" move all entries from oivf (empty on output)"""
+        return _swigfaiss.InvertedLists_merge_from(self, oivf, add_id)
+    __swig_destroy__ = _swigfaiss.delete_InvertedLists
+
+    def imbalance_factor(self):
+        r""" 1= perfectly balanced, >1: imbalanced"""
+        return _swigfaiss.InvertedLists_imbalance_factor(self)
+
+    def print_stats(self):
+        r""" display some stats about the inverted lists"""
+        return _swigfaiss.InvertedLists_print_stats(self)
+
+    def compute_ntotal(self):
+        r""" sum up list sizes"""
+        return _swigfaiss.InvertedLists_compute_ntotal(self)
+
+# Register InvertedLists in _swigfaiss:
+_swigfaiss.InvertedLists_swigregister(InvertedLists)
+
+class ArrayInvertedLists(InvertedLists):
+    r""" simple (default) implementation as an array of inverted lists"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    codes = property(_swigfaiss.ArrayInvertedLists_codes_get, _swigfaiss.ArrayInvertedLists_codes_set)
+    ids = property(_swigfaiss.ArrayInvertedLists_ids_get, _swigfaiss.ArrayInvertedLists_ids_set, doc=r""" Inverted lists for indexes""")
+
+    def __init__(self, nlist, code_size):
+        _swigfaiss.ArrayInvertedLists_swiginit(self, _swigfaiss.new_ArrayInvertedLists(nlist, code_size))
+
+    def list_size(self, list_no):
+        return _swigfaiss.ArrayInvertedLists_list_size(self, list_no)
+
+    def get_codes(self, list_no):
+        return _swigfaiss.ArrayInvertedLists_get_codes(self, list_no)
+
+    def get_ids(self, list_no):
+        return _swigfaiss.ArrayInvertedLists_get_ids(self, list_no)
+
+    def add_entries(self, list_no, n_entry, ids, code):
+        return _swigfaiss.ArrayInvertedLists_add_entries(self, list_no, n_entry, ids, code)
+
+    def update_entries(self, list_no, offset, n_entry, ids, code):
+        return _swigfaiss.ArrayInvertedLists_update_entries(self, list_no, offset, n_entry, ids, code)
+
+    def resize(self, list_no, new_size):
+        return _swigfaiss.ArrayInvertedLists_resize(self, list_no, new_size)
+    __swig_destroy__ = _swigfaiss.delete_ArrayInvertedLists
+
+# Register ArrayInvertedLists in _swigfaiss:
+_swigfaiss.ArrayInvertedLists_swigregister(ArrayInvertedLists)
+
+class ReadOnlyInvertedLists(InvertedLists):
+    r""" invlists that fail for all write functions"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+
+    def add_entries(self, list_no, n_entry, ids, code):
+        return _swigfaiss.ReadOnlyInvertedLists_add_entries(self, list_no, n_entry, ids, code)
+
+    def update_entries(self, list_no, offset, n_entry, ids, code):
+        return _swigfaiss.ReadOnlyInvertedLists_update_entries(self, list_no, offset, n_entry, ids, code)
+
+    def resize(self, list_no, new_size):
+        return _swigfaiss.ReadOnlyInvertedLists_resize(self, list_no, new_size)
+    __swig_destroy__ = _swigfaiss.delete_ReadOnlyInvertedLists
+
+# Register ReadOnlyInvertedLists in _swigfaiss:
+_swigfaiss.ReadOnlyInvertedLists_swigregister(ReadOnlyInvertedLists)
+
+class HStackInvertedLists(ReadOnlyInvertedLists):
+    r""" Horizontal stack of inverted lists"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    ils = property(_swigfaiss.HStackInvertedLists_ils_get, _swigfaiss.HStackInvertedLists_ils_set)
+
+    def __init__(self, nil, ils):
+        r""" build InvertedLists by concatenating nil of them"""
+        _swigfaiss.HStackInvertedLists_swiginit(self, _swigfaiss.new_HStackInvertedLists(nil, ils))
+
+    def list_size(self, list_no):
+        return _swigfaiss.HStackInvertedLists_list_size(self, list_no)
+
+    def get_codes(self, list_no):
+        return _swigfaiss.HStackInvertedLists_get_codes(self, list_no)
+
+    def get_ids(self, list_no):
+        return _swigfaiss.HStackInvertedLists_get_ids(self, list_no)
+
+    def prefetch_lists(self, list_nos, nlist):
+        return _swigfaiss.HStackInvertedLists_prefetch_lists(self, list_nos, nlist)
+
+    def release_codes(self, list_no, codes):
+        return _swigfaiss.HStackInvertedLists_release_codes(self, list_no, codes)
+
+    def release_ids(self, list_no, ids):
+        return _swigfaiss.HStackInvertedLists_release_ids(self, list_no, ids)
+
+    def get_single_id(self, list_no, offset):
+        return _swigfaiss.HStackInvertedLists_get_single_id(self, list_no, offset)
+
+    def get_single_code(self, list_no, offset):
+        return _swigfaiss.HStackInvertedLists_get_single_code(self, list_no, offset)
+    __swig_destroy__ = _swigfaiss.delete_HStackInvertedLists
+
+# Register HStackInvertedLists in _swigfaiss:
+_swigfaiss.HStackInvertedLists_swigregister(HStackInvertedLists)
+
+class SliceInvertedLists(ReadOnlyInvertedLists):
+    r""" vertical slice of indexes in another InvertedLists"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    il = property(_swigfaiss.SliceInvertedLists_il_get, _swigfaiss.SliceInvertedLists_il_set)
+    i0 = property(_swigfaiss.SliceInvertedLists_i0_get, _swigfaiss.SliceInvertedLists_i0_set)
+    i1 = property(_swigfaiss.SliceInvertedLists_i1_get, _swigfaiss.SliceInvertedLists_i1_set)
+
+    def __init__(self, il, i0, i1):
+        _swigfaiss.SliceInvertedLists_swiginit(self, _swigfaiss.new_SliceInvertedLists(il, i0, i1))
+
+    def list_size(self, list_no):
+        return _swigfaiss.SliceInvertedLists_list_size(self, list_no)
+
+    def get_codes(self, list_no):
+        return _swigfaiss.SliceInvertedLists_get_codes(self, list_no)
+
+    def get_ids(self, list_no):
+        return _swigfaiss.SliceInvertedLists_get_ids(self, list_no)
+
+    def release_codes(self, list_no, codes):
+        return _swigfaiss.SliceInvertedLists_release_codes(self, list_no, codes)
+
+    def release_ids(self, list_no, ids):
+        return _swigfaiss.SliceInvertedLists_release_ids(self, list_no, ids)
+
+    def get_single_id(self, list_no, offset):
+        return _swigfaiss.SliceInvertedLists_get_single_id(self, list_no, offset)
+
+    def get_single_code(self, list_no, offset):
+        return _swigfaiss.SliceInvertedLists_get_single_code(self, list_no, offset)
+
+    def prefetch_lists(self, list_nos, nlist):
+        return _swigfaiss.SliceInvertedLists_prefetch_lists(self, list_nos, nlist)
+    __swig_destroy__ = _swigfaiss.delete_SliceInvertedLists
+
+# Register SliceInvertedLists in _swigfaiss:
+_swigfaiss.SliceInvertedLists_swigregister(SliceInvertedLists)
+
+class VStackInvertedLists(ReadOnlyInvertedLists):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    ils = property(_swigfaiss.VStackInvertedLists_ils_get, _swigfaiss.VStackInvertedLists_ils_set)
+    cumsz = property(_swigfaiss.VStackInvertedLists_cumsz_get, _swigfaiss.VStackInvertedLists_cumsz_set)
+
+    def __init__(self, nil, ils):
+        r""" build InvertedLists by concatenating nil of them"""
+        _swigfaiss.VStackInvertedLists_swiginit(self, _swigfaiss.new_VStackInvertedLists(nil, ils))
+
+    def list_size(self, list_no):
+        return _swigfaiss.VStackInvertedLists_list_size(self, list_no)
+
+    def get_codes(self, list_no):
+        return _swigfaiss.VStackInvertedLists_get_codes(self, list_no)
+
+    def get_ids(self, list_no):
+        return _swigfaiss.VStackInvertedLists_get_ids(self, list_no)
+
+    def release_codes(self, list_no, codes):
+        return _swigfaiss.VStackInvertedLists_release_codes(self, list_no, codes)
+
+    def release_ids(self, list_no, ids):
+        return _swigfaiss.VStackInvertedLists_release_ids(self, list_no, ids)
+
+    def get_single_id(self, list_no, offset):
+        return _swigfaiss.VStackInvertedLists_get_single_id(self, list_no, offset)
+
+    def get_single_code(self, list_no, offset):
+        return _swigfaiss.VStackInvertedLists_get_single_code(self, list_no, offset)
+
+    def prefetch_lists(self, list_nos, nlist):
+        return _swigfaiss.VStackInvertedLists_prefetch_lists(self, list_nos, nlist)
+    __swig_destroy__ = _swigfaiss.delete_VStackInvertedLists
+
+# Register VStackInvertedLists in _swigfaiss:
+_swigfaiss.VStackInvertedLists_swigregister(VStackInvertedLists)
+
+class MaskedInvertedLists(ReadOnlyInvertedLists):
+    r"""
+     use the first inverted lists if they are non-empty otherwise use the second
+
+    This is useful if il1 has a few inverted lists that are too long,
+    and that il0 has replacement lists for those, with empty lists for
+    the others.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    il0 = property(_swigfaiss.MaskedInvertedLists_il0_get, _swigfaiss.MaskedInvertedLists_il0_set)
+    il1 = property(_swigfaiss.MaskedInvertedLists_il1_get, _swigfaiss.MaskedInvertedLists_il1_set)
+
+    def __init__(self, il0, il1):
+        _swigfaiss.MaskedInvertedLists_swiginit(self, _swigfaiss.new_MaskedInvertedLists(il0, il1))
+
+    def list_size(self, list_no):
+        return _swigfaiss.MaskedInvertedLists_list_size(self, list_no)
+
+    def get_codes(self, list_no):
+        return _swigfaiss.MaskedInvertedLists_get_codes(self, list_no)
+
+    def get_ids(self, list_no):
+        return _swigfaiss.MaskedInvertedLists_get_ids(self, list_no)
+
+    def release_codes(self, list_no, codes):
+        return _swigfaiss.MaskedInvertedLists_release_codes(self, list_no, codes)
+
+    def release_ids(self, list_no, ids):
+        return _swigfaiss.MaskedInvertedLists_release_ids(self, list_no, ids)
+
+    def get_single_id(self, list_no, offset):
+        return _swigfaiss.MaskedInvertedLists_get_single_id(self, list_no, offset)
+
+    def get_single_code(self, list_no, offset):
+        return _swigfaiss.MaskedInvertedLists_get_single_code(self, list_no, offset)
+
+    def prefetch_lists(self, list_nos, nlist):
+        return _swigfaiss.MaskedInvertedLists_prefetch_lists(self, list_nos, nlist)
+    __swig_destroy__ = _swigfaiss.delete_MaskedInvertedLists
+
+# Register MaskedInvertedLists in _swigfaiss:
+_swigfaiss.MaskedInvertedLists_swigregister(MaskedInvertedLists)
+
+class StopWordsInvertedLists(ReadOnlyInvertedLists):
+    r"""
+    if the inverted list in il is smaller than maxsize then return it,
+    otherwise return an empty invlist
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    il0 = property(_swigfaiss.StopWordsInvertedLists_il0_get, _swigfaiss.StopWordsInvertedLists_il0_set)
+    maxsize = property(_swigfaiss.StopWordsInvertedLists_maxsize_get, _swigfaiss.StopWordsInvertedLists_maxsize_set)
+
+    def __init__(self, il, maxsize):
+        _swigfaiss.StopWordsInvertedLists_swiginit(self, _swigfaiss.new_StopWordsInvertedLists(il, maxsize))
+
+    def list_size(self, list_no):
+        return _swigfaiss.StopWordsInvertedLists_list_size(self, list_no)
+
+    def get_codes(self, list_no):
+        return _swigfaiss.StopWordsInvertedLists_get_codes(self, list_no)
+
+    def get_ids(self, list_no):
+        return _swigfaiss.StopWordsInvertedLists_get_ids(self, list_no)
+
+    def release_codes(self, list_no, codes):
+        return _swigfaiss.StopWordsInvertedLists_release_codes(self, list_no, codes)
+
+    def release_ids(self, list_no, ids):
+        return _swigfaiss.StopWordsInvertedLists_release_ids(self, list_no, ids)
+
+    def get_single_id(self, list_no, offset):
+        return _swigfaiss.StopWordsInvertedLists_get_single_id(self, list_no, offset)
+
+    def get_single_code(self, list_no, offset):
+        return _swigfaiss.StopWordsInvertedLists_get_single_code(self, list_no, offset)
+
+    def prefetch_lists(self, list_nos, nlist):
+        return _swigfaiss.StopWordsInvertedLists_prefetch_lists(self, list_nos, nlist)
+    __swig_destroy__ = _swigfaiss.delete_StopWordsInvertedLists
+
+# Register StopWordsInvertedLists in _swigfaiss:
+_swigfaiss.StopWordsInvertedLists_swigregister(StopWordsInvertedLists)
+
+class InvertedListsIOHook(object):
+    r"""
+     Callbacks to handle other types of InvertedList objects.
+
+    The callbacks should be registered with add_callback before calling
+    read_index or read_InvertedLists. The callbacks for
+    OnDiskInvertedLists are registrered by default. The invlist type is
+    identified by:
+
+    - the key (a fourcc) at read time
+    - the class name (as given by typeid.name) at write time
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    key = property(_swigfaiss.InvertedListsIOHook_key_get, doc=r""" string version of the fourcc""")
+    classname = property(_swigfaiss.InvertedListsIOHook_classname_get, doc=r""" typeid.name""")
+
+    def write(self, ils, f):
+        r""" write the index to the IOWriter (including the fourcc)"""
+        return _swigfaiss.InvertedListsIOHook_write(self, ils, f)
+
+    def read(self, f, io_flags):
+        r""" called when the fourcc matches this class's fourcc"""
+        return _swigfaiss.InvertedListsIOHook_read(self, f, io_flags)
+
+    def read_ArrayInvertedLists(self, f, io_flags, nlist, code_size, sizes):
+        r"""
+         read from a ArrayInvertedLists into this invertedlist type.
+        For this to work, the callback has to be enabled and the io_flag has to
+        be set to IO_FLAG_SKIP_IVF_DATA | (16 upper bits of the fourcc)
+
+        (default implementation fails)
+        """
+        return _swigfaiss.InvertedListsIOHook_read_ArrayInvertedLists(self, f, io_flags, nlist, code_size, sizes)
+    __swig_destroy__ = _swigfaiss.delete_InvertedListsIOHook
+
+    @staticmethod
+    def add_callback(arg1):
+        return _swigfaiss.InvertedListsIOHook_add_callback(arg1)
+
+    @staticmethod
+    def print_callbacks():
+        return _swigfaiss.InvertedListsIOHook_print_callbacks()
+
+    @staticmethod
+    def lookup(h):
+        return _swigfaiss.InvertedListsIOHook_lookup(h)
+
+    @staticmethod
+    def lookup_classname(classname):
+        return _swigfaiss.InvertedListsIOHook_lookup_classname(classname)
+
+# Register InvertedListsIOHook in _swigfaiss:
+_swigfaiss.InvertedListsIOHook_swigregister(InvertedListsIOHook)
+
+def InvertedListsIOHook_add_callback(arg1):
+    return _swigfaiss.InvertedListsIOHook_add_callback(arg1)
+
+def InvertedListsIOHook_print_callbacks():
+    return _swigfaiss.InvertedListsIOHook_print_callbacks()
+
+def InvertedListsIOHook_lookup(h):
+    return _swigfaiss.InvertedListsIOHook_lookup(h)
+
+def InvertedListsIOHook_lookup_classname(classname):
+    return _swigfaiss.InvertedListsIOHook_lookup_classname(classname)
+
+class BlockInvertedLists(InvertedLists):
+    r"""
+     Inverted Lists that are organized by blocks.
+
+    Different from the regular inverted lists, the codes are organized by blocks
+    of size block_size bytes that reprsent a set of n_per_block. Therefore, code
+    allocations are always rounded up to block_size bytes. The codes are also
+    aligned on 32-byte boundaries for use with SIMD.
+
+    To avoid misinterpretations, the code_size is set to (size_t)(-1), even if
+    arguably the amount of memory consumed by code is block_size / n_per_block.
+
+    The writing functions add_entries and update_entries operate on block-aligned
+    data.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    n_per_block = property(_swigfaiss.BlockInvertedLists_n_per_block_get, _swigfaiss.BlockInvertedLists_n_per_block_set)
+    block_size = property(_swigfaiss.BlockInvertedLists_block_size_get, _swigfaiss.BlockInvertedLists_block_size_set)
+    codes = property(_swigfaiss.BlockInvertedLists_codes_get, _swigfaiss.BlockInvertedLists_codes_set)
+    ids = property(_swigfaiss.BlockInvertedLists_ids_get, _swigfaiss.BlockInvertedLists_ids_set)
+
+    def __init__(self, *args):
+        _swigfaiss.BlockInvertedLists_swiginit(self, _swigfaiss.new_BlockInvertedLists(*args))
+
+    def list_size(self, list_no):
+        return _swigfaiss.BlockInvertedLists_list_size(self, list_no)
+
+    def get_codes(self, list_no):
+        return _swigfaiss.BlockInvertedLists_get_codes(self, list_no)
+
+    def get_ids(self, list_no):
+        return _swigfaiss.BlockInvertedLists_get_ids(self, list_no)
+
+    def add_entries(self, list_no, n_entry, ids, code):
+        return _swigfaiss.BlockInvertedLists_add_entries(self, list_no, n_entry, ids, code)
+
+    def update_entries(self, list_no, offset, n_entry, ids, code):
+        r""" not implemented"""
+        return _swigfaiss.BlockInvertedLists_update_entries(self, list_no, offset, n_entry, ids, code)
+
+    def resize(self, list_no, new_size):
+        return _swigfaiss.BlockInvertedLists_resize(self, list_no, new_size)
+    __swig_destroy__ = _swigfaiss.delete_BlockInvertedLists
+
+# Register BlockInvertedLists in _swigfaiss:
+_swigfaiss.BlockInvertedLists_swigregister(BlockInvertedLists)
+
+
+def lo_build(list_id, offset):
+    r"""
+    Copyright (c) Facebook, Inc. and its affiliates.
+
+    This source code is licensed under the MIT license found in the
+    LICENSE file in the root directory of this source tree.
+    """
+    return _swigfaiss.lo_build(list_id, offset)
+
+def lo_listno(lo):
+    return _swigfaiss.lo_listno(lo)
+
+def lo_offset(lo):
+    return _swigfaiss.lo_offset(lo)
+class DirectMap(object):
+    r"""Direct map: a way to map back from ids to inverted lists"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    NoMap = _swigfaiss.DirectMap_NoMap
+    Array = _swigfaiss.DirectMap_Array
+    Hashtable = _swigfaiss.DirectMap_Hashtable
+    type = property(_swigfaiss.DirectMap_type_get, _swigfaiss.DirectMap_type_set)
+    array = property(_swigfaiss.DirectMap_array_get, _swigfaiss.DirectMap_array_set, doc=r""" map for direct access to the elements. Map ids to LO-encoded entries.""")
+    hashtable = property(_swigfaiss.DirectMap_hashtable_get, _swigfaiss.DirectMap_hashtable_set)
+
+    def __init__(self):
+        _swigfaiss.DirectMap_swiginit(self, _swigfaiss.new_DirectMap())
+
+    def set_type(self, new_type, invlists, ntotal):
+        r""" set type and initialize"""
+        return _swigfaiss.DirectMap_set_type(self, new_type, invlists, ntotal)
+
+    def get(self, id):
+        r""" get an entry"""
+        return _swigfaiss.DirectMap_get(self, id)
+
+    def no(self):
+        r""" for quick checks"""
+        return _swigfaiss.DirectMap_no(self)
+
+    def check_can_add(self, ids):
+        r"""
+        update the direct_map
+
+         throw if Array and ids is not NULL
+        """
+        return _swigfaiss.DirectMap_check_can_add(self, ids)
+
+    def add_single_id(self, id, list_no, offset):
+        r""" non thread-safe version"""
+        return _swigfaiss.DirectMap_add_single_id(self, id, list_no, offset)
+
+    def clear(self):
+        r""" remove all entries"""
+        return _swigfaiss.DirectMap_clear(self)
+
+    def remove_ids(self, sel, invlists):
+        r"""
+        operations on inverted lists that require translation with a DirectMap
+
+         remove ids from the InvertedLists, possibly using the direct map
+        """
+        return _swigfaiss.DirectMap_remove_ids(self, sel, invlists)
+
+    def update_codes(self, invlists, n, ids, list_nos, codes):
+        r""" update entries, using the direct map"""
+        return _swigfaiss.DirectMap_update_codes(self, invlists, n, ids, list_nos, codes)
+    __swig_destroy__ = _swigfaiss.delete_DirectMap
+
+# Register DirectMap in _swigfaiss:
+_swigfaiss.DirectMap_swigregister(DirectMap)
+
+class DirectMapAdd(object):
+    r""" Thread-safe way of updating the direct_map"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    direct_map = property(_swigfaiss.DirectMapAdd_direct_map_get, _swigfaiss.DirectMapAdd_direct_map_set)
+    type = property(_swigfaiss.DirectMapAdd_type_get, _swigfaiss.DirectMapAdd_type_set)
+    ntotal = property(_swigfaiss.DirectMapAdd_ntotal_get, _swigfaiss.DirectMapAdd_ntotal_set)
+    n = property(_swigfaiss.DirectMapAdd_n_get, _swigfaiss.DirectMapAdd_n_set)
+    xids = property(_swigfaiss.DirectMapAdd_xids_get, _swigfaiss.DirectMapAdd_xids_set)
+    all_ofs = property(_swigfaiss.DirectMapAdd_all_ofs_get, _swigfaiss.DirectMapAdd_all_ofs_set)
+
+    def __init__(self, direct_map, n, xids):
+        _swigfaiss.DirectMapAdd_swiginit(self, _swigfaiss.new_DirectMapAdd(direct_map, n, xids))
+
+    def add(self, i, list_no, offset):
+        r""" add vector i (with id xids[i]) at list_no and offset"""
+        return _swigfaiss.DirectMapAdd_add(self, i, list_no, offset)
+    __swig_destroy__ = _swigfaiss.delete_DirectMapAdd
+
+# Register DirectMapAdd in _swigfaiss:
+_swigfaiss.DirectMapAdd_swigregister(DirectMapAdd)
+
+class Level1Quantizer(object):
+    r"""
+     Encapsulates a quantizer object for the IndexIVF
+
+    The class isolates the fields that are independent of the storage
+    of the lists (especially training)
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    quantizer = property(_swigfaiss.Level1Quantizer_quantizer_get, _swigfaiss.Level1Quantizer_quantizer_set, doc=r""" quantizer that maps vectors to inverted lists""")
+    nlist = property(_swigfaiss.Level1Quantizer_nlist_get, _swigfaiss.Level1Quantizer_nlist_set, doc=r""" number of possible key values""")
+    quantizer_trains_alone = property(_swigfaiss.Level1Quantizer_quantizer_trains_alone_get, _swigfaiss.Level1Quantizer_quantizer_trains_alone_set, doc=r"""
+    = 0: use the quantizer as index in a kmeans training
+    = 1: just pass on the training set to the train() of the quantizer
+    = 2: kmeans training on a flat index + add the centroids to the quantizer
+    """)
+    own_fields = property(_swigfaiss.Level1Quantizer_own_fields_get, _swigfaiss.Level1Quantizer_own_fields_set, doc=r""" whether object owns the quantizer (false by default)""")
+    cp = property(_swigfaiss.Level1Quantizer_cp_get, _swigfaiss.Level1Quantizer_cp_set, doc=r""" to override default clustering params""")
+    clustering_index = property(_swigfaiss.Level1Quantizer_clustering_index_get, _swigfaiss.Level1Quantizer_clustering_index_set, doc=r""" to override index used during clustering""")
+
+    def train_q1(self, n, x, verbose, metric_type):
+        r""" Trains the quantizer and calls train_residual to train sub-quantizers"""
+        return _swigfaiss.Level1Quantizer_train_q1(self, n, x, verbose, metric_type)
+
+    def coarse_code_size(self):
+        r""" compute the number of bytes required to store list ids"""
+        return _swigfaiss.Level1Quantizer_coarse_code_size(self)
+
+    def encode_listno(self, list_no, code):
+        return _swigfaiss.Level1Quantizer_encode_listno(self, list_no, code)
+
+    def decode_listno(self, code):
+        return _swigfaiss.Level1Quantizer_decode_listno(self, code)
+
+    def __init__(self, *args):
+        _swigfaiss.Level1Quantizer_swiginit(self, _swigfaiss.new_Level1Quantizer(*args))
+    __swig_destroy__ = _swigfaiss.delete_Level1Quantizer
+
+# Register Level1Quantizer in _swigfaiss:
+_swigfaiss.Level1Quantizer_swigregister(Level1Quantizer)
+
+class IVFSearchParameters(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nprobe = property(_swigfaiss.IVFSearchParameters_nprobe_get, _swigfaiss.IVFSearchParameters_nprobe_set, doc=r""" number of probes at query time""")
+    max_codes = property(_swigfaiss.IVFSearchParameters_max_codes_get, _swigfaiss.IVFSearchParameters_max_codes_set, doc=r""" max nb of codes to visit to do a query""")
+
+    def __init__(self):
+        _swigfaiss.IVFSearchParameters_swiginit(self, _swigfaiss.new_IVFSearchParameters())
+    __swig_destroy__ = _swigfaiss.delete_IVFSearchParameters
+
+# Register IVFSearchParameters in _swigfaiss:
+_swigfaiss.IVFSearchParameters_swigregister(IVFSearchParameters)
+
+class IndexIVF(Index, Level1Quantizer):
+    r"""
+     Index based on a inverted file (IVF)
+
+    In the inverted file, the quantizer (an Index instance) provides a
+    quantization index for each vector to be added. The quantization
+    index maps to a list (aka inverted list or posting list), where the
+    id of the vector is stored.
+
+    The inverted list object is required only after trainng. If none is
+    set externally, an ArrayInvertedLists is used automatically.
+
+    At search time, the vector to be searched is also quantized, and
+    only the list corresponding to the quantization index is
+    searched. This speeds up the search by making it
+    non-exhaustive. This can be relaxed using multi-probe search: a few
+    (nprobe) quantization indices are selected and several inverted
+    lists are visited.
+
+    Sub-classes implement a post-filtering of the index that refines
+    the distance estimation from the query to databse vectors.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    invlists = property(_swigfaiss.IndexIVF_invlists_get, _swigfaiss.IndexIVF_invlists_set, doc=r""" Access to the actual data""")
+    own_invlists = property(_swigfaiss.IndexIVF_own_invlists_get, _swigfaiss.IndexIVF_own_invlists_set)
+    code_size = property(_swigfaiss.IndexIVF_code_size_get, _swigfaiss.IndexIVF_code_size_set, doc=r""" code size per vector in bytes""")
+    nprobe = property(_swigfaiss.IndexIVF_nprobe_get, _swigfaiss.IndexIVF_nprobe_set, doc=r""" number of probes at query time""")
+    max_codes = property(_swigfaiss.IndexIVF_max_codes_get, _swigfaiss.IndexIVF_max_codes_set, doc=r""" max nb of codes to visit to do a query""")
+    parallel_mode = property(_swigfaiss.IndexIVF_parallel_mode_get, _swigfaiss.IndexIVF_parallel_mode_set, doc=r"""
+     Parallel mode determines how queries are parallelized with OpenMP
+
+    0 (default): split over queries
+    1: parallelize over inverted lists
+    2: parallelize over both
+    3: split over queries with a finer granularity
+
+    PARALLEL_MODE_NO_HEAP_INIT: binary or with the previous to
+    prevent the heap to be initialized and finalized
+    """)
+    PARALLEL_MODE_NO_HEAP_INIT = property(_swigfaiss.IndexIVF_PARALLEL_MODE_NO_HEAP_INIT_get)
+    direct_map = property(_swigfaiss.IndexIVF_direct_map_get, _swigfaiss.IndexIVF_direct_map_set, doc=r"""
+    optional map that maps back ids to invlist entries. This
+    enables reconstruct()
+    """)
+
+    def reset(self):
+        return _swigfaiss.IndexIVF_reset(self)
+
+    def train(self, n, x):
+        r""" Trains the quantizer and calls train_residual to train sub-quantizers"""
+        return _swigfaiss.IndexIVF_train(self, n, x)
+
+    def add(self, n, x):
+        r""" Calls add_with_ids with NULL ids"""
+        return _swigfaiss.IndexIVF_add(self, n, x)
+
+    def add_with_ids(self, n, x, xids):
+        r""" default implementation that calls encode_vectors"""
+        return _swigfaiss.IndexIVF_add_with_ids(self, n, x, xids)
+
+    def add_core(self, n, x, xids, precomputed_idx):
+        r"""
+         Implementation of vector addition where the vector assignments are
+        predefined. The default implementation hands over the code extraction to
+        encode_vectors.
+
+        :type precomputed_idx: int
+        :param precomputed_idx:    quantization indices for the input vectors
+            (size n)
+        """
+        return _swigfaiss.IndexIVF_add_core(self, n, x, xids, precomputed_idx)
+
+    def encode_vectors(self, n, x, list_nos, codes, include_listno=False):
+        r"""
+         Encodes a set of vectors as they would appear in the inverted lists
+
+        :type list_nos: int
+        :param list_nos:   inverted list ids as returned by the
+                              quantizer (size n). -1s are ignored.
+        :type codes: uint8_t
+        :param codes:      output codes, size n * code_size
+        :type include_listno: boolean, optional
+        :param include_listno:
+                              include the list ids in the code (in this case add
+                              ceil(log8(nlist)) to the code size)
+        """
+        return _swigfaiss.IndexIVF_encode_vectors(self, n, x, list_nos, codes, include_listno)
+
+    def add_sa_codes(self, n, codes, xids):
+        r"""
+         Add vectors that are computed with the standalone codec
+
+        :type codes: uint8_t
+        :param codes:  codes to add size n * sa_code_size()
+        :type xids: int
+        :param xids:   corresponding ids, size n
+        """
+        return _swigfaiss.IndexIVF_add_sa_codes(self, n, codes, xids)
+
+    def train_residual(self, n, x):
+        r"""
+        Sub-classes that encode the residuals can train their encoders here
+        does nothing by default
+        """
+        return _swigfaiss.IndexIVF_train_residual(self, n, x)
+
+    def search_preassigned(self, n, x, k, assign, centroid_dis, distances, labels, store_pairs, params=None, stats=None):
+        r"""
+         search a set of vectors, that are pre-quantized by the IVF
+         quantizer. Fill in the corresponding heaps with the query
+         results. The default implementation uses InvertedListScanners
+         to do the search.
+
+        :type n: int
+        :param n:      nb of vectors to query
+        :type x: float
+        :param x:      query vectors, size nx * d
+        :type assign: int
+        :param assign: coarse quantization indices, size nx * nprobe
+        :type centroid_dis: float
+        :param centroid_dis:
+                          distances to coarse centroids, size nx * nprobe
+        :param distance:
+                          output distances, size n * k
+        :type labels: int
+        :param labels: output labels, size n * k
+        :type store_pairs: boolean
+        :param store_pairs: store inv list index + inv list offset
+                                instead in upper/lower 32 bit of result,
+                                instead of ids (used for reranking).
+        :type params: :py:class:`IVFSearchParameters`, optional
+        :param params: used to override the object's search parameters
+        :type stats: :py:class:`IndexIVFStats`, optional
+        :param stats:  search stats to be updated (can be null)
+        """
+        return _swigfaiss.IndexIVF_search_preassigned(self, n, x, k, assign, centroid_dis, distances, labels, store_pairs, params, stats)
+
+    def search(self, n, x, k, distances, labels):
+        r""" assign the vectors, then call search_preassign"""
+        return _swigfaiss.IndexIVF_search(self, n, x, k, distances, labels)
+
+    def range_search(self, n, x, radius, result):
+        return _swigfaiss.IndexIVF_range_search(self, n, x, radius, result)
+
+    def range_search_preassigned(self, nx, x, radius, keys, coarse_dis, result, store_pairs=False, params=None, stats=None):
+        return _swigfaiss.IndexIVF_range_search_preassigned(self, nx, x, radius, keys, coarse_dis, result, store_pairs, params, stats)
+
+    def get_InvertedListScanner(self, store_pairs=False):
+        r"""
+         Get a scanner for this index (store_pairs means ignore labels)
+
+        The default search implementation uses this to compute the distances
+        """
+        return _swigfaiss.IndexIVF_get_InvertedListScanner(self, store_pairs)
+
+    def reconstruct(self, key, recons):
+        r""" reconstruct a vector. Works only if maintain_direct_map is set to 1 or 2"""
+        return _swigfaiss.IndexIVF_reconstruct(self, key, recons)
+
+    def update_vectors(self, nv, idx, v):
+        r"""
+         Update a subset of vectors.
+
+        The index must have a direct_map
+
+        :type nv: int
+        :param nv:     nb of vectors to update
+        :type idx: int
+        :param idx:    vector indices to update, size nv
+        :type v: float
+        :param v:      vectors of new values, size nv*d
+        """
+        return _swigfaiss.IndexIVF_update_vectors(self, nv, idx, v)
+
+    def reconstruct_n(self, i0, ni, recons):
+        r"""
+         Reconstruct a subset of the indexed vectors.
+
+        Overrides default implementation to bypass reconstruct() which requires
+        direct_map to be maintained.
+
+        :type i0: int
+        :param i0:     first vector to reconstruct
+        :type ni: int
+        :param ni:     nb of vectors to reconstruct
+        :type recons: float
+        :param recons: output array of reconstructed vectors, size ni * d
+        """
+        return _swigfaiss.IndexIVF_reconstruct_n(self, i0, ni, recons)
+
+    def search_and_reconstruct(self, n, x, k, distances, labels, recons):
+        r"""
+         Similar to search, but also reconstructs the stored vectors (or an
+        approximation in the case of lossy coding) for the search results.
+
+        Overrides default implementation to avoid having to maintain direct_map
+        and instead fetch the code offsets through the `store_pairs` flag in
+        search_preassigned().
+
+        :type recons: float
+        :param recons:      reconstructed vectors size (n, k, d)
+        """
+        return _swigfaiss.IndexIVF_search_and_reconstruct(self, n, x, k, distances, labels, recons)
+
+    def reconstruct_from_offset(self, list_no, offset, recons):
+        r"""
+         Reconstruct a vector given the location in terms of (inv list index +
+        inv list offset) instead of the id.
+
+        Useful for reconstructing when the direct_map is not maintained and
+        the inv list offset is computed by search_preassigned() with
+        `store_pairs` set.
+        """
+        return _swigfaiss.IndexIVF_reconstruct_from_offset(self, list_no, offset, recons)
+
+    def remove_ids(self, sel):
+        r""" Dataset manipulation functions"""
+        return _swigfaiss.IndexIVF_remove_ids(self, sel)
+
+    def check_compatible_for_merge(self, other):
+        r"""
+         check that the two indexes are compatible (ie, they are
+        trained in the same way and have the same
+        parameters). Otherwise throw.
+        """
+        return _swigfaiss.IndexIVF_check_compatible_for_merge(self, other)
+
+    def merge_from(self, other, add_id):
+        r"""
+         moves the entries from another dataset to self. On output,
+        other is empty. add_id is added to all moved ids (for
+        sequential ids, this would be this->ntotal
+        """
+        return _swigfaiss.IndexIVF_merge_from(self, other, add_id)
+
+    def copy_subset_to(self, other, subset_type, a1, a2):
+        r"""
+         copy a subset of the entries index to the other index
+
+        if subset_type == 0: copies ids in [a1, a2)
+        if subset_type == 1: copies ids if id % a1 == a2
+        if subset_type == 2: copies inverted lists such that a1
+                             elements are left before and a2 elements are after
+        """
+        return _swigfaiss.IndexIVF_copy_subset_to(self, other, subset_type, a1, a2)
+    __swig_destroy__ = _swigfaiss.delete_IndexIVF
+
+    def get_list_size(self, list_no):
+        return _swigfaiss.IndexIVF_get_list_size(self, list_no)
+
+    def make_direct_map(self, new_maintain_direct_map=True):
+        r"""
+         intialize a direct map
+
+        :type new_maintain_direct_map: boolean, optional
+        :param new_maintain_direct_map:    if true, create a direct map,
+                                              else clear it
+        """
+        return _swigfaiss.IndexIVF_make_direct_map(self, new_maintain_direct_map)
+
+    def set_direct_map_type(self, type):
+        return _swigfaiss.IndexIVF_set_direct_map_type(self, type)
+
+    def replace_invlists(self, il, own=False):
+        r""" replace the inverted lists, old one is deallocated if own_invlists"""
+        return _swigfaiss.IndexIVF_replace_invlists(self, il, own)
+
+    def sa_code_size(self):
+        return _swigfaiss.IndexIVF_sa_code_size(self)
+
+    def sa_encode(self, n, x, bytes):
+        return _swigfaiss.IndexIVF_sa_encode(self, n, x, bytes)
+
+# Register IndexIVF in _swigfaiss:
+_swigfaiss.IndexIVF_swigregister(IndexIVF)
+
+class IndexIVFStats(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nq = property(_swigfaiss.IndexIVFStats_nq_get, _swigfaiss.IndexIVFStats_nq_set)
+    nlist = property(_swigfaiss.IndexIVFStats_nlist_get, _swigfaiss.IndexIVFStats_nlist_set)
+    ndis = property(_swigfaiss.IndexIVFStats_ndis_get, _swigfaiss.IndexIVFStats_ndis_set)
+    nheap_updates = property(_swigfaiss.IndexIVFStats_nheap_updates_get, _swigfaiss.IndexIVFStats_nheap_updates_set)
+    quantization_time = property(_swigfaiss.IndexIVFStats_quantization_time_get, _swigfaiss.IndexIVFStats_quantization_time_set)
+    search_time = property(_swigfaiss.IndexIVFStats_search_time_get, _swigfaiss.IndexIVFStats_search_time_set)
+
+    def __init__(self):
+        _swigfaiss.IndexIVFStats_swiginit(self, _swigfaiss.new_IndexIVFStats())
+
+    def reset(self):
+        return _swigfaiss.IndexIVFStats_reset(self)
+
+    def add(self, other):
+        return _swigfaiss.IndexIVFStats_add(self, other)
+    __swig_destroy__ = _swigfaiss.delete_IndexIVFStats
+
+# Register IndexIVFStats in _swigfaiss:
+_swigfaiss.IndexIVFStats_swigregister(IndexIVFStats)
+
+
+def check_compatible_for_merge(index1, index2):
+    r"""
+     check if two indexes have the same parameters and are trained in
+    the same way, otherwise throw.
+    """
+    return _swigfaiss.check_compatible_for_merge(index1, index2)
+
+def extract_index_ivf(*args):
+    return _swigfaiss.extract_index_ivf(*args)
+
+def try_extract_index_ivf(*args):
+    return _swigfaiss.try_extract_index_ivf(*args)
+
+def merge_into(index0, index1, shift_ids):
+    r"""
+     Merge index1 into index0. Works on IndexIVF's and IndexIVF's
+     embedded in a IndexPreTransform. On output, the index1 is empty.
+
+    :type shift_ids: boolean
+    :param shift_ids:: translate the ids from index1 to index0->prev_ntotal
+    """
+    return _swigfaiss.merge_into(index0, index1, shift_ids)
+
+def search_centroid(index, x, n, centroid_ids):
+    return _swigfaiss.search_centroid(index, x, n, centroid_ids)
+
+def search_and_return_centroids(index, n, xin, k, distances, labels, query_centroid_ids, result_centroid_ids):
+    return _swigfaiss.search_and_return_centroids(index, n, xin, k, distances, labels, query_centroid_ids, result_centroid_ids)
+class SlidingIndexWindow(object):
+    r"""
+     A set of IndexIVFs concatenated together in a FIFO fashion.
+    at each "step", the oldest index slice is removed and a new index is added.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    index = property(_swigfaiss.SlidingIndexWindow_index_get, _swigfaiss.SlidingIndexWindow_index_set, doc=r""" common index that contains the sliding window""")
+    ils = property(_swigfaiss.SlidingIndexWindow_ils_get, _swigfaiss.SlidingIndexWindow_ils_set, doc=r""" InvertedLists of index""")
+    n_slice = property(_swigfaiss.SlidingIndexWindow_n_slice_get, _swigfaiss.SlidingIndexWindow_n_slice_set, doc=r""" number of slices currently in index""")
+    nlist = property(_swigfaiss.SlidingIndexWindow_nlist_get, _swigfaiss.SlidingIndexWindow_nlist_set, doc=r""" same as index->nlist""")
+    sizes = property(_swigfaiss.SlidingIndexWindow_sizes_get, _swigfaiss.SlidingIndexWindow_sizes_set, doc=r""" cumulative list sizes at each slice""")
+
+    def __init__(self, index):
+        r""" index should be initially empty and trained"""
+        _swigfaiss.SlidingIndexWindow_swiginit(self, _swigfaiss.new_SlidingIndexWindow(index))
+
+    def step(self, sub_index, remove_oldest):
+        r"""
+         Add one index to the current index and remove the oldest one.
+
+        :type sub_index: :py:class:`Index`
+        :param sub_index:        slice to swap in (can be NULL)
+        :type remove_oldest: boolean
+        :param remove_oldest:    if true, remove the oldest slices
+        """
+        return _swigfaiss.SlidingIndexWindow_step(self, sub_index, remove_oldest)
+    __swig_destroy__ = _swigfaiss.delete_SlidingIndexWindow
+
+# Register SlidingIndexWindow in _swigfaiss:
+_swigfaiss.SlidingIndexWindow_swigregister(SlidingIndexWindow)
+
+
+def get_invlist_range(index, i0, i1):
+    r""" Get a subset of inverted lists [i0, i1)"""
+    return _swigfaiss.get_invlist_range(index, i0, i1)
+
+def set_invlist_range(index, i0, i1, src):
+    r""" Set a subset of inverted lists"""
+    return _swigfaiss.set_invlist_range(index, i0, i1, src)
+
+def search_with_parameters(index, n, x, k, distances, labels, params, nb_dis=None, ms_per_stage=None):
+    r"""
+     search an IndexIVF, possibly embedded in an IndexPreTransform with
+    given parameters. This is a way to set the nprobe and get
+    statdistics in a thread-safe way.
+
+    Optionally returns (if non-nullptr):
+    - nb_dis: number of distances computed
+    - ms_per_stage: [0]: preprocessing time
+                    [1]: coarse quantization,
+                    [2]: list scanning
+    """
+    return _swigfaiss.search_with_parameters(index, n, x, k, distances, labels, params, nb_dis, ms_per_stage)
+
+def range_search_with_parameters(index, n, x, radius, result, params, nb_dis=None, ms_per_stage=None):
+    r""" same as search_with_parameters but for range search"""
+    return _swigfaiss.range_search_with_parameters(index, n, x, radius, result, params, nb_dis, ms_per_stage)
+class ScalarQuantizer(object):
+    r"""
+    The uniform quantizer has a range [vmin, vmax]. The range can be
+    the same for all dimensions (uniform) or specific per dimension
+    (default).
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    QT_8bit = _swigfaiss.ScalarQuantizer_QT_8bit
+    r""" 8 bits per component"""
+    QT_4bit = _swigfaiss.ScalarQuantizer_QT_4bit
+    r""" 4 bits per component"""
+    QT_8bit_uniform = _swigfaiss.ScalarQuantizer_QT_8bit_uniform
+    r""" same, shared range for all dimensions"""
+    QT_4bit_uniform = _swigfaiss.ScalarQuantizer_QT_4bit_uniform
+    QT_fp16 = _swigfaiss.ScalarQuantizer_QT_fp16
+    QT_8bit_direct = _swigfaiss.ScalarQuantizer_QT_8bit_direct
+    r""" fast indexing of uint8s"""
+    QT_6bit = _swigfaiss.ScalarQuantizer_QT_6bit
+    r""" 6 bits per component"""
+    qtype = property(_swigfaiss.ScalarQuantizer_qtype_get, _swigfaiss.ScalarQuantizer_qtype_set)
+    RS_minmax = _swigfaiss.ScalarQuantizer_RS_minmax
+    r""" [min - rs*(max-min), max + rs*(max-min)]"""
+    RS_meanstd = _swigfaiss.ScalarQuantizer_RS_meanstd
+    r""" [mean - std * rs, mean + std * rs]"""
+    RS_quantiles = _swigfaiss.ScalarQuantizer_RS_quantiles
+    r""" [Q(rs), Q(1-rs)]"""
+    RS_optim = _swigfaiss.ScalarQuantizer_RS_optim
+    r""" alternate optimization of reconstruction error"""
+    rangestat = property(_swigfaiss.ScalarQuantizer_rangestat_get, _swigfaiss.ScalarQuantizer_rangestat_set)
+    rangestat_arg = property(_swigfaiss.ScalarQuantizer_rangestat_arg_get, _swigfaiss.ScalarQuantizer_rangestat_arg_set)
+    d = property(_swigfaiss.ScalarQuantizer_d_get, _swigfaiss.ScalarQuantizer_d_set, doc=r""" dimension of input vectors""")
+    bits = property(_swigfaiss.ScalarQuantizer_bits_get, _swigfaiss.ScalarQuantizer_bits_set, doc=r""" bits per scalar code""")
+    code_size = property(_swigfaiss.ScalarQuantizer_code_size_get, _swigfaiss.ScalarQuantizer_code_size_set, doc=r""" bytes per vector""")
+    trained = property(_swigfaiss.ScalarQuantizer_trained_get, _swigfaiss.ScalarQuantizer_trained_set, doc=r""" trained values (including the range)""")
+
+    def __init__(self, *args):
+        _swigfaiss.ScalarQuantizer_swiginit(self, _swigfaiss.new_ScalarQuantizer(*args))
+
+    def set_derived_sizes(self):
+        r""" updates internal values based on qtype and d"""
+        return _swigfaiss.ScalarQuantizer_set_derived_sizes(self)
+
+    def train(self, n, x):
+        return _swigfaiss.ScalarQuantizer_train(self, n, x)
+
+    def train_residual(self, n, x, quantizer, by_residual, verbose):
+        r""" Used by an IVF index to train based on the residuals"""
+        return _swigfaiss.ScalarQuantizer_train_residual(self, n, x, quantizer, by_residual, verbose)
+
+    def compute_codes(self, x, codes, n):
+        r"""
+         Encode a set of vectors
+
+        :type x: float
+        :param x:      vectors to encode, size n * d
+        :type codes: uint8_t
+        :param codes:  output codes, size n * code_size
+        """
+        return _swigfaiss.ScalarQuantizer_compute_codes(self, x, codes, n)
+
+    def decode(self, code, x, n):
+        r"""
+         Decode a set of vectors
+
+        :param codes:  codes to decode, size n * code_size
+        :type x: float
+        :param x:      output vectors, size n * d
+        """
+        return _swigfaiss.ScalarQuantizer_decode(self, code, x, n)
+
+    def select_quantizer(self):
+        return _swigfaiss.ScalarQuantizer_select_quantizer(self)
+
+    def get_distance_computer(self, *args):
+        return _swigfaiss.ScalarQuantizer_get_distance_computer(self, *args)
+
+    def select_InvertedListScanner(self, mt, quantizer, store_pairs, by_residual=False):
+        return _swigfaiss.ScalarQuantizer_select_InvertedListScanner(self, mt, quantizer, store_pairs, by_residual)
+    __swig_destroy__ = _swigfaiss.delete_ScalarQuantizer
+
+# Register ScalarQuantizer in _swigfaiss:
+_swigfaiss.ScalarQuantizer_swigregister(ScalarQuantizer)
+
+class IndexScalarQuantizer(IndexFlatCodes):
+    r"""
+    The uniform quantizer has a range [vmin, vmax]. The range can be
+    the same for all dimensions (uniform) or specific per dimension
+    (default).
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    sq = property(_swigfaiss.IndexScalarQuantizer_sq_get, _swigfaiss.IndexScalarQuantizer_sq_set, doc=r""" Used to encode the vectors""")
+
+    def __init__(self, *args):
+        _swigfaiss.IndexScalarQuantizer_swiginit(self, _swigfaiss.new_IndexScalarQuantizer(*args))
+
+    def train(self, n, x):
+        return _swigfaiss.IndexScalarQuantizer_train(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexScalarQuantizer_search(self, n, x, k, distances, labels)
+
+    def get_distance_computer(self):
+        return _swigfaiss.IndexScalarQuantizer_get_distance_computer(self)
+
+    def sa_encode(self, n, x, bytes):
+        return _swigfaiss.IndexScalarQuantizer_sa_encode(self, n, x, bytes)
+
+    def sa_decode(self, n, bytes, x):
+        return _swigfaiss.IndexScalarQuantizer_sa_decode(self, n, bytes, x)
+    __swig_destroy__ = _swigfaiss.delete_IndexScalarQuantizer
+
+# Register IndexScalarQuantizer in _swigfaiss:
+_swigfaiss.IndexScalarQuantizer_swigregister(IndexScalarQuantizer)
+
+class IndexIVFScalarQuantizer(IndexIVF):
+    r"""
+     An IVF implementation where the components of the residuals are
+    encoded with a scalar quantizer. All distance computations
+    are asymmetric, so the encoded vectors are decoded and approximate
+    distances are computed.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    sq = property(_swigfaiss.IndexIVFScalarQuantizer_sq_get, _swigfaiss.IndexIVFScalarQuantizer_sq_set)
+    by_residual = property(_swigfaiss.IndexIVFScalarQuantizer_by_residual_get, _swigfaiss.IndexIVFScalarQuantizer_by_residual_set)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexIVFScalarQuantizer_swiginit(self, _swigfaiss.new_IndexIVFScalarQuantizer(*args))
+
+    def train_residual(self, n, x):
+        return _swigfaiss.IndexIVFScalarQuantizer_train_residual(self, n, x)
+
+    def encode_vectors(self, n, x, list_nos, codes, include_listnos=False):
+        return _swigfaiss.IndexIVFScalarQuantizer_encode_vectors(self, n, x, list_nos, codes, include_listnos)
+
+    def add_core(self, n, x, xids, precomputed_idx):
+        return _swigfaiss.IndexIVFScalarQuantizer_add_core(self, n, x, xids, precomputed_idx)
+
+    def get_InvertedListScanner(self, store_pairs):
+        return _swigfaiss.IndexIVFScalarQuantizer_get_InvertedListScanner(self, store_pairs)
+
+    def reconstruct_from_offset(self, list_no, offset, recons):
+        return _swigfaiss.IndexIVFScalarQuantizer_reconstruct_from_offset(self, list_no, offset, recons)
+
+    def sa_decode(self, n, bytes, x):
+        return _swigfaiss.IndexIVFScalarQuantizer_sa_decode(self, n, bytes, x)
+    __swig_destroy__ = _swigfaiss.delete_IndexIVFScalarQuantizer
+
+# Register IndexIVFScalarQuantizer in _swigfaiss:
+_swigfaiss.IndexIVFScalarQuantizer_swigregister(IndexIVFScalarQuantizer)
+
+class IndexIVFSpectralHash(IndexIVF):
+    r"""
+     Inverted list that stores binary codes of size nbit. Before the
+    binary conversion, the dimension of the vectors is transformed from
+    dim d into dim nbit by vt (a random rotation by default).
+
+    Each coordinate is subtracted from a value determined by
+    threshold_type, and split into intervals of size period. Half of
+    the interval is a 0 bit, the other half a 1.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    vt = property(_swigfaiss.IndexIVFSpectralHash_vt_get, _swigfaiss.IndexIVFSpectralHash_vt_set, doc=r""" transformation from d to nbit dim""")
+    own_fields = property(_swigfaiss.IndexIVFSpectralHash_own_fields_get, _swigfaiss.IndexIVFSpectralHash_own_fields_set, doc=r""" own the vt""")
+    nbit = property(_swigfaiss.IndexIVFSpectralHash_nbit_get, _swigfaiss.IndexIVFSpectralHash_nbit_set, doc=r""" nb of bits of the binary signature""")
+    period = property(_swigfaiss.IndexIVFSpectralHash_period_get, _swigfaiss.IndexIVFSpectralHash_period_set, doc=r""" interval size for 0s and 1s""")
+    Thresh_global = _swigfaiss.IndexIVFSpectralHash_Thresh_global
+    r""" global threshold at 0"""
+    Thresh_centroid = _swigfaiss.IndexIVFSpectralHash_Thresh_centroid
+    r""" compare to centroid"""
+    Thresh_centroid_half = _swigfaiss.IndexIVFSpectralHash_Thresh_centroid_half
+    r""" central interval around centroid"""
+    Thresh_median = _swigfaiss.IndexIVFSpectralHash_Thresh_median
+    r""" median of training set"""
+    threshold_type = property(_swigfaiss.IndexIVFSpectralHash_threshold_type_get, _swigfaiss.IndexIVFSpectralHash_threshold_type_set)
+    trained = property(_swigfaiss.IndexIVFSpectralHash_trained_get, _swigfaiss.IndexIVFSpectralHash_trained_set, doc=r"""
+    Trained threshold.
+    size nlist * nbit or 0 if Thresh_global
+    """)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexIVFSpectralHash_swiginit(self, _swigfaiss.new_IndexIVFSpectralHash(*args))
+
+    def train_residual(self, n, x):
+        return _swigfaiss.IndexIVFSpectralHash_train_residual(self, n, x)
+
+    def encode_vectors(self, n, x, list_nos, codes, include_listnos=False):
+        return _swigfaiss.IndexIVFSpectralHash_encode_vectors(self, n, x, list_nos, codes, include_listnos)
+
+    def get_InvertedListScanner(self, store_pairs):
+        return _swigfaiss.IndexIVFSpectralHash_get_InvertedListScanner(self, store_pairs)
+
+    def replace_vt(self, *args):
+        r"""
+        *Overload 1:*
+         replace the vector transform for an empty (and possibly untrained) index
+
+        |
+
+        *Overload 2:*
+         convenience function to get the VT from an index constucted by an
+        index_factory (should end in "LSH")
+
+        |
+
+        *Overload 3:*
+         convenience function to get the VT from an index constucted by an
+        index_factory (should end in "LSH")
+        """
+        return _swigfaiss.IndexIVFSpectralHash_replace_vt(self, *args)
+    __swig_destroy__ = _swigfaiss.delete_IndexIVFSpectralHash
+
+# Register IndexIVFSpectralHash in _swigfaiss:
+_swigfaiss.IndexIVFSpectralHash_swigregister(IndexIVFSpectralHash)
+
+class IndexIVFAdditiveQuantizer(IndexIVF):
+    r"""
+    Abstract class for IVF additive quantizers.
+    The search functions are in common.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    aq = property(_swigfaiss.IndexIVFAdditiveQuantizer_aq_get, _swigfaiss.IndexIVFAdditiveQuantizer_aq_set)
+    by_residual = property(_swigfaiss.IndexIVFAdditiveQuantizer_by_residual_get, _swigfaiss.IndexIVFAdditiveQuantizer_by_residual_set)
+    use_precomputed_table = property(_swigfaiss.IndexIVFAdditiveQuantizer_use_precomputed_table_get, _swigfaiss.IndexIVFAdditiveQuantizer_use_precomputed_table_set)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexIVFAdditiveQuantizer_swiginit(self, _swigfaiss.new_IndexIVFAdditiveQuantizer(*args))
+
+    def train_residual(self, n, x):
+        return _swigfaiss.IndexIVFAdditiveQuantizer_train_residual(self, n, x)
+
+    def encode_vectors(self, n, x, list_nos, codes, include_listnos=False):
+        return _swigfaiss.IndexIVFAdditiveQuantizer_encode_vectors(self, n, x, list_nos, codes, include_listnos)
+
+    def get_InvertedListScanner(self, store_pairs):
+        return _swigfaiss.IndexIVFAdditiveQuantizer_get_InvertedListScanner(self, store_pairs)
+    __swig_destroy__ = _swigfaiss.delete_IndexIVFAdditiveQuantizer
+
+# Register IndexIVFAdditiveQuantizer in _swigfaiss:
+_swigfaiss.IndexIVFAdditiveQuantizer_swigregister(IndexIVFAdditiveQuantizer)
+
+class IndexIVFResidualQuantizer(IndexIVFAdditiveQuantizer):
+    r"""
+     IndexIVF based on a residual quantizer. Stored vectors are
+    approximated by residual quantization codes.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    rq = property(_swigfaiss.IndexIVFResidualQuantizer_rq_get, _swigfaiss.IndexIVFResidualQuantizer_rq_set, doc=r""" The residual quantizer used to encode the vectors""")
+
+    def __init__(self, *args):
+        _swigfaiss.IndexIVFResidualQuantizer_swiginit(self, _swigfaiss.new_IndexIVFResidualQuantizer(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexIVFResidualQuantizer
+
+# Register IndexIVFResidualQuantizer in _swigfaiss:
+_swigfaiss.IndexIVFResidualQuantizer_swigregister(IndexIVFResidualQuantizer)
+
+class IndexIVFLocalSearchQuantizer(IndexIVFAdditiveQuantizer):
+    r"""
+     IndexIVF based on a residual quantizer. Stored vectors are
+    approximated by residual quantization codes.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    lsq = property(_swigfaiss.IndexIVFLocalSearchQuantizer_lsq_get, _swigfaiss.IndexIVFLocalSearchQuantizer_lsq_set, doc=r""" The LSQ quantizer used to encode the vectors""")
+
+    def __init__(self, *args):
+        _swigfaiss.IndexIVFLocalSearchQuantizer_swiginit(self, _swigfaiss.new_IndexIVFLocalSearchQuantizer(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexIVFLocalSearchQuantizer
+
+# Register IndexIVFLocalSearchQuantizer in _swigfaiss:
+_swigfaiss.IndexIVFLocalSearchQuantizer_swigregister(IndexIVFLocalSearchQuantizer)
+
+class HNSW(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    assign_probas = property(_swigfaiss.HNSW_assign_probas_get, _swigfaiss.HNSW_assign_probas_set, doc=r""" assignment probability to each layer (sum=1)""")
+    cum_nneighbor_per_level = property(_swigfaiss.HNSW_cum_nneighbor_per_level_get, _swigfaiss.HNSW_cum_nneighbor_per_level_set, doc=r"""
+    number of neighbors stored per layer (cumulative), should not
+    be changed after first add
+    """)
+    levels = property(_swigfaiss.HNSW_levels_get, _swigfaiss.HNSW_levels_set, doc=r""" level of each vector (base level = 1), size = ntotal""")
+    offsets = property(_swigfaiss.HNSW_offsets_get, _swigfaiss.HNSW_offsets_set, doc=r"""
+    offsets[i] is the offset in the neighbors array where vector i is stored
+    size ntotal + 1
+    """)
+    neighbors = property(_swigfaiss.HNSW_neighbors_get, _swigfaiss.HNSW_neighbors_set, doc=r"""
+    neighbors[offsets[i]:offsets[i+1]] is the list of neighbors of vector i
+    for all levels. this is where all storage goes.
+    """)
+    entry_point = property(_swigfaiss.HNSW_entry_point_get, _swigfaiss.HNSW_entry_point_set, doc=r"""
+    entry point in the search structure (one of the points with maximum
+    level
+    """)
+    rng = property(_swigfaiss.HNSW_rng_get, _swigfaiss.HNSW_rng_set)
+    max_level = property(_swigfaiss.HNSW_max_level_get, _swigfaiss.HNSW_max_level_set, doc=r""" maximum level""")
+    efConstruction = property(_swigfaiss.HNSW_efConstruction_get, _swigfaiss.HNSW_efConstruction_set, doc=r""" expansion factor at construction time""")
+    efSearch = property(_swigfaiss.HNSW_efSearch_get, _swigfaiss.HNSW_efSearch_set, doc=r""" expansion factor at search time""")
+    check_relative_distance = property(_swigfaiss.HNSW_check_relative_distance_get, _swigfaiss.HNSW_check_relative_distance_set, doc=r"""
+    during search: do we check whether the next best distance is good
+    enough?
+    """)
+    upper_beam = property(_swigfaiss.HNSW_upper_beam_get, _swigfaiss.HNSW_upper_beam_set, doc=r""" number of entry points in levels > 0.""")
+    search_bounded_queue = property(_swigfaiss.HNSW_search_bounded_queue_get, _swigfaiss.HNSW_search_bounded_queue_set, doc=r""" use bounded queue during exploration""")
+
+    def set_default_probas(self, M, levelMult):
+        r"""
+        initialize the assign_probas and cum_nneighbor_per_level to
+        have 2*M links on level 0 and M links on levels > 0
+        """
+        return _swigfaiss.HNSW_set_default_probas(self, M, levelMult)
+
+    def set_nb_neighbors(self, level_no, n):
+        r""" set nb of neighbors for this level (before adding anything)"""
+        return _swigfaiss.HNSW_set_nb_neighbors(self, level_no, n)
+
+    def nb_neighbors(self, layer_no):
+        r""" nb of neighbors for this level"""
+        return _swigfaiss.HNSW_nb_neighbors(self, layer_no)
+
+    def cum_nb_neighbors(self, layer_no):
+        r""" cumumlative nb up to (and excluding) this level"""
+        return _swigfaiss.HNSW_cum_nb_neighbors(self, layer_no)
+
+    def neighbor_range(self, no, layer_no, begin, end):
+        r""" range of entries in the neighbors table of vertex no at layer_no"""
+        return _swigfaiss.HNSW_neighbor_range(self, no, layer_no, begin, end)
+
+    def __init__(self, M=32):
+        r""" only mandatory parameter: nb of neighbors"""
+        _swigfaiss.HNSW_swiginit(self, _swigfaiss.new_HNSW(M))
+
+    def random_level(self):
+        r""" pick a random level for a new point"""
+        return _swigfaiss.HNSW_random_level(self)
+
+    def fill_with_random_links(self, n):
+        r""" add n random levels to table (for debugging...)"""
+        return _swigfaiss.HNSW_fill_with_random_links(self, n)
+
+    def add_links_starting_from(self, ptdis, pt_id, nearest, d_nearest, level, locks, vt):
+        return _swigfaiss.HNSW_add_links_starting_from(self, ptdis, pt_id, nearest, d_nearest, level, locks, vt)
+
+    def add_with_locks(self, ptdis, pt_level, pt_id, locks, vt):
+        r"""
+         add point pt_id on all levels <= pt_level and build the link
+        structure for them.
+        """
+        return _swigfaiss.HNSW_add_with_locks(self, ptdis, pt_level, pt_id, locks, vt)
+
+    def search_from_candidates(self, qdis, k, I, D, candidates, vt, stats, level, nres_in=0):
+        return _swigfaiss.HNSW_search_from_candidates(self, qdis, k, I, D, candidates, vt, stats, level, nres_in)
+
+    def search_from_candidate_unbounded(self, node, qdis, ef, vt, stats):
+        return _swigfaiss.HNSW_search_from_candidate_unbounded(self, node, qdis, ef, vt, stats)
+
+    def search(self, qdis, k, I, D, vt):
+        r""" search interface"""
+        return _swigfaiss.HNSW_search(self, qdis, k, I, D, vt)
+
+    def reset(self):
+        return _swigfaiss.HNSW_reset(self)
+
+    def clear_neighbor_tables(self, level):
+        return _swigfaiss.HNSW_clear_neighbor_tables(self, level)
+
+    def print_neighbor_stats(self, level):
+        return _swigfaiss.HNSW_print_neighbor_stats(self, level)
+
+    def prepare_level_tab(self, n, preset_levels=False):
+        return _swigfaiss.HNSW_prepare_level_tab(self, n, preset_levels)
+
+    @staticmethod
+    def shrink_neighbor_list(qdis, input, output, max_size):
+        return _swigfaiss.HNSW_shrink_neighbor_list(qdis, input, output, max_size)
+    __swig_destroy__ = _swigfaiss.delete_HNSW
+
+# Register HNSW in _swigfaiss:
+_swigfaiss.HNSW_swigregister(HNSW)
+
+def HNSW_shrink_neighbor_list(qdis, input, output, max_size):
+    return _swigfaiss.HNSW_shrink_neighbor_list(qdis, input, output, max_size)
+
+class HNSWStats(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    n1 = property(_swigfaiss.HNSWStats_n1_get, _swigfaiss.HNSWStats_n1_set)
+    n2 = property(_swigfaiss.HNSWStats_n2_get, _swigfaiss.HNSWStats_n2_set)
+    n3 = property(_swigfaiss.HNSWStats_n3_get, _swigfaiss.HNSWStats_n3_set)
+    ndis = property(_swigfaiss.HNSWStats_ndis_get, _swigfaiss.HNSWStats_ndis_set)
+    nreorder = property(_swigfaiss.HNSWStats_nreorder_get, _swigfaiss.HNSWStats_nreorder_set)
+
+    def __init__(self, n1=0, n2=0, n3=0, ndis=0, nreorder=0):
+        _swigfaiss.HNSWStats_swiginit(self, _swigfaiss.new_HNSWStats(n1, n2, n3, ndis, nreorder))
+
+    def reset(self):
+        return _swigfaiss.HNSWStats_reset(self)
+
+    def combine(self, other):
+        return _swigfaiss.HNSWStats_combine(self, other)
+    __swig_destroy__ = _swigfaiss.delete_HNSWStats
+
+# Register HNSWStats in _swigfaiss:
+_swigfaiss.HNSWStats_swigregister(HNSWStats)
+
+class ReconstructFromNeighbors(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    index = property(_swigfaiss.ReconstructFromNeighbors_index_get)
+    M = property(_swigfaiss.ReconstructFromNeighbors_M_get, _swigfaiss.ReconstructFromNeighbors_M_set)
+    k = property(_swigfaiss.ReconstructFromNeighbors_k_get, _swigfaiss.ReconstructFromNeighbors_k_set)
+    nsq = property(_swigfaiss.ReconstructFromNeighbors_nsq_get, _swigfaiss.ReconstructFromNeighbors_nsq_set)
+    code_size = property(_swigfaiss.ReconstructFromNeighbors_code_size_get, _swigfaiss.ReconstructFromNeighbors_code_size_set)
+    k_reorder = property(_swigfaiss.ReconstructFromNeighbors_k_reorder_get, _swigfaiss.ReconstructFromNeighbors_k_reorder_set)
+    codebook = property(_swigfaiss.ReconstructFromNeighbors_codebook_get, _swigfaiss.ReconstructFromNeighbors_codebook_set)
+    codes = property(_swigfaiss.ReconstructFromNeighbors_codes_get, _swigfaiss.ReconstructFromNeighbors_codes_set)
+    ntotal = property(_swigfaiss.ReconstructFromNeighbors_ntotal_get, _swigfaiss.ReconstructFromNeighbors_ntotal_set)
+    d = property(_swigfaiss.ReconstructFromNeighbors_d_get, _swigfaiss.ReconstructFromNeighbors_d_set)
+    dsub = property(_swigfaiss.ReconstructFromNeighbors_dsub_get, _swigfaiss.ReconstructFromNeighbors_dsub_set)
+
+    def __init__(self, index, k=256, nsq=1):
+        _swigfaiss.ReconstructFromNeighbors_swiginit(self, _swigfaiss.new_ReconstructFromNeighbors(index, k, nsq))
+
+    def add_codes(self, n, x):
+        r"""
+        codes must be added in the correct order and the IndexHNSW
+        must be populated and sorted
+        """
+        return _swigfaiss.ReconstructFromNeighbors_add_codes(self, n, x)
+
+    def compute_distances(self, n, shortlist, query, distances):
+        return _swigfaiss.ReconstructFromNeighbors_compute_distances(self, n, shortlist, query, distances)
+
+    def estimate_code(self, x, i, code):
+        r""" called by add_codes"""
+        return _swigfaiss.ReconstructFromNeighbors_estimate_code(self, x, i, code)
+
+    def reconstruct(self, i, x, tmp):
+        r""" called by compute_distances"""
+        return _swigfaiss.ReconstructFromNeighbors_reconstruct(self, i, x, tmp)
+
+    def reconstruct_n(self, n0, ni, x):
+        return _swigfaiss.ReconstructFromNeighbors_reconstruct_n(self, n0, ni, x)
+
+    def get_neighbor_table(self, i, out):
+        r""" get the M+1 -by-d table for neighbor coordinates for vector i"""
+        return _swigfaiss.ReconstructFromNeighbors_get_neighbor_table(self, i, out)
+    __swig_destroy__ = _swigfaiss.delete_ReconstructFromNeighbors
+
+# Register ReconstructFromNeighbors in _swigfaiss:
+_swigfaiss.ReconstructFromNeighbors_swigregister(ReconstructFromNeighbors)
+
+class IndexHNSW(Index):
+    r"""
+     The HNSW index is a normal random-access index with a HNSW
+    link structure built on top
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    hnsw = property(_swigfaiss.IndexHNSW_hnsw_get, _swigfaiss.IndexHNSW_hnsw_set)
+    own_fields = property(_swigfaiss.IndexHNSW_own_fields_get, _swigfaiss.IndexHNSW_own_fields_set)
+    storage = property(_swigfaiss.IndexHNSW_storage_get, _swigfaiss.IndexHNSW_storage_set)
+    reconstruct_from_neighbors = property(_swigfaiss.IndexHNSW_reconstruct_from_neighbors_get, _swigfaiss.IndexHNSW_reconstruct_from_neighbors_set)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexHNSW_swiginit(self, _swigfaiss.new_IndexHNSW(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexHNSW
+
+    def add(self, n, x):
+        return _swigfaiss.IndexHNSW_add(self, n, x)
+
+    def train(self, n, x):
+        r""" Trains the storage if needed"""
+        return _swigfaiss.IndexHNSW_train(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        r""" entry point for search"""
+        return _swigfaiss.IndexHNSW_search(self, n, x, k, distances, labels)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.IndexHNSW_reconstruct(self, key, recons)
+
+    def reset(self):
+        return _swigfaiss.IndexHNSW_reset(self)
+
+    def shrink_level_0_neighbors(self, size):
+        return _swigfaiss.IndexHNSW_shrink_level_0_neighbors(self, size)
+
+    def search_level_0(self, n, x, k, nearest, nearest_d, distances, labels, nprobe=1, search_type=1):
+        r"""
+         Perform search only on level 0, given the starting points for
+        each vertex.
+
+        :type search_type: int, optional
+        :param search_type: 1:perform one search per nprobe, 2: enqueue
+                               all entry points
+        """
+        return _swigfaiss.IndexHNSW_search_level_0(self, n, x, k, nearest, nearest_d, distances, labels, nprobe, search_type)
+
+    def init_level_0_from_knngraph(self, k, D, I):
+        r""" alternative graph building"""
+        return _swigfaiss.IndexHNSW_init_level_0_from_knngraph(self, k, D, I)
+
+    def init_level_0_from_entry_points(self, npt, points, nearests):
+        r""" alternative graph building"""
+        return _swigfaiss.IndexHNSW_init_level_0_from_entry_points(self, npt, points, nearests)
+
+    def reorder_links(self):
+        return _swigfaiss.IndexHNSW_reorder_links(self)
+
+    def link_singletons(self):
+        return _swigfaiss.IndexHNSW_link_singletons(self)
+
+# Register IndexHNSW in _swigfaiss:
+_swigfaiss.IndexHNSW_swigregister(IndexHNSW)
+
+class IndexHNSWFlat(IndexHNSW):
+    r"""
+    Flat index topped with with a HNSW structure to access elements
+    more efficiently.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.IndexHNSWFlat_swiginit(self, _swigfaiss.new_IndexHNSWFlat(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexHNSWFlat
+
+# Register IndexHNSWFlat in _swigfaiss:
+_swigfaiss.IndexHNSWFlat_swigregister(IndexHNSWFlat)
+
+class IndexHNSWPQ(IndexHNSW):
+    r"""
+    PQ index topped with with a HNSW structure to access elements
+    more efficiently.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.IndexHNSWPQ_swiginit(self, _swigfaiss.new_IndexHNSWPQ(*args))
+
+    def train(self, n, x):
+        return _swigfaiss.IndexHNSWPQ_train(self, n, x)
+    __swig_destroy__ = _swigfaiss.delete_IndexHNSWPQ
+
+# Register IndexHNSWPQ in _swigfaiss:
+_swigfaiss.IndexHNSWPQ_swigregister(IndexHNSWPQ)
+
+class IndexHNSWSQ(IndexHNSW):
+    r"""
+    SQ index topped with with a HNSW structure to access elements
+    more efficiently.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.IndexHNSWSQ_swiginit(self, _swigfaiss.new_IndexHNSWSQ(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexHNSWSQ
+
+# Register IndexHNSWSQ in _swigfaiss:
+_swigfaiss.IndexHNSWSQ_swigregister(IndexHNSWSQ)
+
+class IndexHNSW2Level(IndexHNSW):
+    r""" 2-level code structure with fast random access"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.IndexHNSW2Level_swiginit(self, _swigfaiss.new_IndexHNSW2Level(*args))
+
+    def flip_to_ivf(self):
+        return _swigfaiss.IndexHNSW2Level_flip_to_ivf(self)
+
+    def search(self, n, x, k, distances, labels):
+        r""" entry point for search"""
+        return _swigfaiss.IndexHNSW2Level_search(self, n, x, k, distances, labels)
+    __swig_destroy__ = _swigfaiss.delete_IndexHNSW2Level
+
+# Register IndexHNSW2Level in _swigfaiss:
+_swigfaiss.IndexHNSW2Level_swigregister(IndexHNSW2Level)
+
+
+def smawk(nrows, ncols, x, argmins):
+    r"""
+     SMAWK algorithm. Find the row minima of a monotone matrix.
+
+    Expose this for testing.
+
+    :type nrows: int
+    :param nrows:    number of rows
+    :type ncols: int
+    :param ncols:    number of columns
+    :type x: float
+    :param x:        input matrix, size (nrows, ncols)
+    :type argmins: int
+    :param argmins:  argmin of each row
+    """
+    return _swigfaiss.smawk(nrows, ncols, x, argmins)
+
+def kmeans1d(x, n, nclusters, centroids):
+    r"""
+     Exact 1D K-Means by dynamic programming
+
+    From  "Fast Exact k-Means, k-Medians and Bregman Divergence Clustering in 1D"
+    Allan Grønlund, Kasper Green Larsen, Alexander Mathiasen, Jesper Sindahl
+    Nielsen, Stefan Schneider, Mingzhou Song, ArXiV'17
+
+    Section 2.2
+
+    https://arxiv.org/abs/1701.07204
+
+    :type x: float
+    :param x:          input 1D array
+    :type n: int
+    :param n:          input array length
+    :type nclusters: int
+    :param nclusters:  number of clusters
+    :type centroids: float
+    :param centroids:  output centroids, size nclusters
+    :rtype: float
+    :return: imbalancce factor
+    """
+    return _swigfaiss.kmeans1d(x, n, nclusters, centroids)
+class Neighbor(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    id = property(_swigfaiss.Neighbor_id_get, _swigfaiss.Neighbor_id_set)
+    distance = property(_swigfaiss.Neighbor_distance_get, _swigfaiss.Neighbor_distance_set)
+    flag = property(_swigfaiss.Neighbor_flag_get, _swigfaiss.Neighbor_flag_set)
+
+    def __init__(self, *args):
+        _swigfaiss.Neighbor_swiginit(self, _swigfaiss.new_Neighbor(*args))
+
+    def __lt__(self, other):
+        return _swigfaiss.Neighbor___lt__(self, other)
+    __swig_destroy__ = _swigfaiss.delete_Neighbor
+
+# Register Neighbor in _swigfaiss:
+_swigfaiss.Neighbor_swigregister(Neighbor)
+
+class Nhood(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    pool = property(_swigfaiss.Nhood_pool_get, _swigfaiss.Nhood_pool_set)
+    M = property(_swigfaiss.Nhood_M_get, _swigfaiss.Nhood_M_set)
+    nn_old = property(_swigfaiss.Nhood_nn_old_get, _swigfaiss.Nhood_nn_old_set)
+    nn_new = property(_swigfaiss.Nhood_nn_new_get, _swigfaiss.Nhood_nn_new_set)
+    rnn_old = property(_swigfaiss.Nhood_rnn_old_get, _swigfaiss.Nhood_rnn_old_set)
+    rnn_new = property(_swigfaiss.Nhood_rnn_new_get, _swigfaiss.Nhood_rnn_new_set)
+
+    def __init__(self, *args):
+        _swigfaiss.Nhood_swiginit(self, _swigfaiss.new_Nhood(*args))
+
+    def insert(self, id, dist):
+        return _swigfaiss.Nhood_insert(self, id, dist)
+    __swig_destroy__ = _swigfaiss.delete_Nhood
+
+# Register Nhood in _swigfaiss:
+_swigfaiss.Nhood_swigregister(Nhood)
+
+class NNDescent(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, d, K):
+        _swigfaiss.NNDescent_swiginit(self, _swigfaiss.new_NNDescent(d, K))
+    __swig_destroy__ = _swigfaiss.delete_NNDescent
+
+    def build(self, qdis, n, verbose):
+        return _swigfaiss.NNDescent_build(self, qdis, n, verbose)
+
+    def search(self, qdis, topk, indices, dists, vt):
+        return _swigfaiss.NNDescent_search(self, qdis, topk, indices, dists, vt)
+
+    def reset(self):
+        return _swigfaiss.NNDescent_reset(self)
+
+    def init_graph(self, qdis):
+        r""" Initialize the KNN graph randomly"""
+        return _swigfaiss.NNDescent_init_graph(self, qdis)
+
+    def nndescent(self, qdis, verbose):
+        r""" Perform NNDescent algorithm"""
+        return _swigfaiss.NNDescent_nndescent(self, qdis, verbose)
+
+    def join(self, qdis):
+        r""" Perform local join on each node"""
+        return _swigfaiss.NNDescent_join(self, qdis)
+
+    def update(self):
+        r""" Sample new neighbors for each node to peform local join later"""
+        return _swigfaiss.NNDescent_update(self)
+
+    def generate_eval_set(self, qdis, c, v, N):
+        r""" Sample a small number of points to evaluate the quality of KNNG built"""
+        return _swigfaiss.NNDescent_generate_eval_set(self, qdis, c, v, N)
+
+    def eval_recall(self, ctrl_points, acc_eval_set):
+        r""" Evaluate the quality of KNNG built"""
+        return _swigfaiss.NNDescent_eval_recall(self, ctrl_points, acc_eval_set)
+    has_built = property(_swigfaiss.NNDescent_has_built_get, _swigfaiss.NNDescent_has_built_set)
+    K = property(_swigfaiss.NNDescent_K_get, _swigfaiss.NNDescent_K_set)
+    S = property(_swigfaiss.NNDescent_S_get, _swigfaiss.NNDescent_S_set)
+    R = property(_swigfaiss.NNDescent_R_get, _swigfaiss.NNDescent_R_set)
+    L = property(_swigfaiss.NNDescent_L_get, _swigfaiss.NNDescent_L_set)
+    iter = property(_swigfaiss.NNDescent_iter_get, _swigfaiss.NNDescent_iter_set)
+    search_L = property(_swigfaiss.NNDescent_search_L_get, _swigfaiss.NNDescent_search_L_set)
+    random_seed = property(_swigfaiss.NNDescent_random_seed_get, _swigfaiss.NNDescent_random_seed_set)
+    d = property(_swigfaiss.NNDescent_d_get, _swigfaiss.NNDescent_d_set)
+    ntotal = property(_swigfaiss.NNDescent_ntotal_get, _swigfaiss.NNDescent_ntotal_set)
+    graph = property(_swigfaiss.NNDescent_graph_get, _swigfaiss.NNDescent_graph_set)
+    final_graph = property(_swigfaiss.NNDescent_final_graph_get, _swigfaiss.NNDescent_final_graph_set)
+
+# Register NNDescent in _swigfaiss:
+_swigfaiss.NNDescent_swigregister(NNDescent)
+
+class IndexNNDescent(Index):
+    r"""
+     The NNDescent index is a normal random-access index with an NNDescent
+    link structure built on top
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nndescent = property(_swigfaiss.IndexNNDescent_nndescent_get, _swigfaiss.IndexNNDescent_nndescent_set)
+    own_fields = property(_swigfaiss.IndexNNDescent_own_fields_get, _swigfaiss.IndexNNDescent_own_fields_set)
+    storage = property(_swigfaiss.IndexNNDescent_storage_get, _swigfaiss.IndexNNDescent_storage_set)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexNNDescent_swiginit(self, _swigfaiss.new_IndexNNDescent(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexNNDescent
+
+    def add(self, n, x):
+        return _swigfaiss.IndexNNDescent_add(self, n, x)
+
+    def train(self, n, x):
+        r""" Trains the storage if needed"""
+        return _swigfaiss.IndexNNDescent_train(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        r""" entry point for search"""
+        return _swigfaiss.IndexNNDescent_search(self, n, x, k, distances, labels)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.IndexNNDescent_reconstruct(self, key, recons)
+
+    def reset(self):
+        return _swigfaiss.IndexNNDescent_reset(self)
+
+# Register IndexNNDescent in _swigfaiss:
+_swigfaiss.IndexNNDescent_swigregister(IndexNNDescent)
+
+class IndexNNDescentFlat(IndexNNDescent):
+    r"""
+    Flat index topped with with a NNDescent structure to access elements
+    more efficiently.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.IndexNNDescentFlat_swiginit(self, _swigfaiss.new_IndexNNDescentFlat(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexNNDescentFlat
+
+# Register IndexNNDescentFlat in _swigfaiss:
+_swigfaiss.IndexNNDescentFlat_swigregister(IndexNNDescentFlat)
+
+class IndexIVFFlat(IndexIVF):
+    r"""
+     Inverted file with stored vectors. Here the inverted file
+    pre-selects the vectors to be searched, but they are not otherwise
+    encoded, the code array just contains the raw float entries.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def add_core(self, n, x, xids, precomputed_idx):
+        return _swigfaiss.IndexIVFFlat_add_core(self, n, x, xids, precomputed_idx)
+
+    def encode_vectors(self, n, x, list_nos, codes, include_listnos=False):
+        return _swigfaiss.IndexIVFFlat_encode_vectors(self, n, x, list_nos, codes, include_listnos)
+
+    def get_InvertedListScanner(self, store_pairs):
+        return _swigfaiss.IndexIVFFlat_get_InvertedListScanner(self, store_pairs)
+
+    def reconstruct_from_offset(self, list_no, offset, recons):
+        return _swigfaiss.IndexIVFFlat_reconstruct_from_offset(self, list_no, offset, recons)
+
+    def sa_decode(self, n, bytes, x):
+        return _swigfaiss.IndexIVFFlat_sa_decode(self, n, bytes, x)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexIVFFlat_swiginit(self, _swigfaiss.new_IndexIVFFlat(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexIVFFlat
+
+# Register IndexIVFFlat in _swigfaiss:
+_swigfaiss.IndexIVFFlat_swigregister(IndexIVFFlat)
+
+class IndexIVFFlatDedup(IndexIVFFlat):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    instances = property(_swigfaiss.IndexIVFFlatDedup_instances_get, _swigfaiss.IndexIVFFlatDedup_instances_set, doc=r"""
+    Maps ids stored in the index to the ids of vectors that are
+    the same. When a vector is unique, it does not appear in the
+    instances map
+    """)
+
+    def train(self, n, x):
+        r""" also dedups the training set"""
+        return _swigfaiss.IndexIVFFlatDedup_train(self, n, x)
+
+    def add_with_ids(self, n, x, xids):
+        r""" implemented for all IndexIVF* classes"""
+        return _swigfaiss.IndexIVFFlatDedup_add_with_ids(self, n, x, xids)
+
+    def search_preassigned(self, n, x, k, assign, centroid_dis, distances, labels, store_pairs, params=None, stats=None):
+        return _swigfaiss.IndexIVFFlatDedup_search_preassigned(self, n, x, k, assign, centroid_dis, distances, labels, store_pairs, params, stats)
+
+    def remove_ids(self, sel):
+        return _swigfaiss.IndexIVFFlatDedup_remove_ids(self, sel)
+
+    def range_search(self, n, x, radius, result):
+        r""" not implemented"""
+        return _swigfaiss.IndexIVFFlatDedup_range_search(self, n, x, radius, result)
+
+    def update_vectors(self, nv, idx, v):
+        r""" not implemented"""
+        return _swigfaiss.IndexIVFFlatDedup_update_vectors(self, nv, idx, v)
+
+    def reconstruct_from_offset(self, list_no, offset, recons):
+        r""" not implemented"""
+        return _swigfaiss.IndexIVFFlatDedup_reconstruct_from_offset(self, list_no, offset, recons)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexIVFFlatDedup_swiginit(self, _swigfaiss.new_IndexIVFFlatDedup(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexIVFFlatDedup
+
+# Register IndexIVFFlatDedup in _swigfaiss:
+_swigfaiss.IndexIVFFlatDedup_swigregister(IndexIVFFlatDedup)
+
+
+def storage_distance_computer(storage):
+    return _swigfaiss.storage_distance_computer(storage)
+class NSG(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    ntotal = property(_swigfaiss.NSG_ntotal_get, _swigfaiss.NSG_ntotal_set, doc=r""" nb of nodes""")
+    R = property(_swigfaiss.NSG_R_get, _swigfaiss.NSG_R_set, doc=r""" nb of neighbors per node""")
+    L = property(_swigfaiss.NSG_L_get, _swigfaiss.NSG_L_set, doc=r""" length of the search path at construction time""")
+    C = property(_swigfaiss.NSG_C_get, _swigfaiss.NSG_C_set, doc=r""" candidate pool size at construction time""")
+    search_L = property(_swigfaiss.NSG_search_L_get, _swigfaiss.NSG_search_L_set, doc=r""" length of the search path""")
+    enterpoint = property(_swigfaiss.NSG_enterpoint_get, _swigfaiss.NSG_enterpoint_set, doc=r""" enterpoint""")
+    final_graph = property(_swigfaiss.NSG_final_graph_get, _swigfaiss.NSG_final_graph_set, doc=r""" NSG graph structure""")
+    is_built = property(_swigfaiss.NSG_is_built_get, _swigfaiss.NSG_is_built_set, doc=r""" NSG is built or not""")
+    rng = property(_swigfaiss.NSG_rng_get, _swigfaiss.NSG_rng_set, doc=r""" random generator""")
+
+    def __init__(self, R=32):
+        _swigfaiss.NSG_swiginit(self, _swigfaiss.new_NSG(R))
+
+    def build(self, storage, n, knn_graph, verbose):
+        return _swigfaiss.NSG_build(self, storage, n, knn_graph, verbose)
+
+    def reset(self):
+        return _swigfaiss.NSG_reset(self)
+
+    def search(self, dis, k, I, D, vt):
+        return _swigfaiss.NSG_search(self, dis, k, I, D, vt)
+
+    def init_graph(self, storage, knn_graph):
+        return _swigfaiss.NSG_init_graph(self, storage, knn_graph)
+
+    def add_reverse_links(self, q, locks, dis, graph):
+        return _swigfaiss.NSG_add_reverse_links(self, q, locks, dis, graph)
+
+    def sync_prune(self, q, pool, dis, vt, knn_graph, graph):
+        return _swigfaiss.NSG_sync_prune(self, q, pool, dis, vt, knn_graph, graph)
+
+    def link(self, storage, knn_graph, graph, verbose):
+        return _swigfaiss.NSG_link(self, storage, knn_graph, graph, verbose)
+
+    def tree_grow(self, storage, degrees):
+        return _swigfaiss.NSG_tree_grow(self, storage, degrees)
+
+    def dfs(self, vt, root, cnt):
+        return _swigfaiss.NSG_dfs(self, vt, root, cnt)
+
+    def attach_unlinked(self, storage, vt, vt2, degrees):
+        return _swigfaiss.NSG_attach_unlinked(self, storage, vt, vt2, degrees)
+
+    def check_graph(self):
+        return _swigfaiss.NSG_check_graph(self)
+    __swig_destroy__ = _swigfaiss.delete_NSG
+
+# Register NSG in _swigfaiss:
+_swigfaiss.NSG_swigregister(NSG)
+
+class IndexNSG(Index):
+    r"""
+     The NSG index is a normal random-access index with a NSG
+    link structure built on top
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nsg = property(_swigfaiss.IndexNSG_nsg_get, _swigfaiss.IndexNSG_nsg_set, doc=r""" the link strcuture""")
+    own_fields = property(_swigfaiss.IndexNSG_own_fields_get, _swigfaiss.IndexNSG_own_fields_set, doc=r""" the sequential storage""")
+    storage = property(_swigfaiss.IndexNSG_storage_get, _swigfaiss.IndexNSG_storage_set)
+    is_built = property(_swigfaiss.IndexNSG_is_built_get, _swigfaiss.IndexNSG_is_built_set, doc=r""" the index is built or not""")
+    GK = property(_swigfaiss.IndexNSG_GK_get, _swigfaiss.IndexNSG_GK_set, doc=r""" K of KNN graph for building""")
+    build_type = property(_swigfaiss.IndexNSG_build_type_get, _swigfaiss.IndexNSG_build_type_set, doc=r"""
+    indicate how to build a knn graph
+    - 0: build NSG with brute force search
+    - 1: build NSG with NNDescent
+    """)
+    nndescent_S = property(_swigfaiss.IndexNSG_nndescent_S_get, _swigfaiss.IndexNSG_nndescent_S_set, doc=r""" parameters for nndescent""")
+    nndescent_R = property(_swigfaiss.IndexNSG_nndescent_R_get, _swigfaiss.IndexNSG_nndescent_R_set)
+    nndescent_L = property(_swigfaiss.IndexNSG_nndescent_L_get, _swigfaiss.IndexNSG_nndescent_L_set)
+    nndescent_iter = property(_swigfaiss.IndexNSG_nndescent_iter_get, _swigfaiss.IndexNSG_nndescent_iter_set)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexNSG_swiginit(self, _swigfaiss.new_IndexNSG(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexNSG
+
+    def build(self, n, x, knn_graph, GK):
+        return _swigfaiss.IndexNSG_build(self, n, x, knn_graph, GK)
+
+    def add(self, n, x):
+        return _swigfaiss.IndexNSG_add(self, n, x)
+
+    def train(self, n, x):
+        r""" Trains the storage if needed"""
+        return _swigfaiss.IndexNSG_train(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        r""" entry point for search"""
+        return _swigfaiss.IndexNSG_search(self, n, x, k, distances, labels)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.IndexNSG_reconstruct(self, key, recons)
+
+    def reset(self):
+        return _swigfaiss.IndexNSG_reset(self)
+
+    def check_knn_graph(self, knn_graph, n, K):
+        return _swigfaiss.IndexNSG_check_knn_graph(self, knn_graph, n, K)
+
+# Register IndexNSG in _swigfaiss:
+_swigfaiss.IndexNSG_swigregister(IndexNSG)
+
+class IndexNSGFlat(IndexNSG):
+    r"""
+    Flat index topped with with a NSG structure to access elements
+    more efficiently.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.IndexNSGFlat_swiginit(self, _swigfaiss.new_IndexNSGFlat(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexNSGFlat
+
+# Register IndexNSGFlat in _swigfaiss:
+_swigfaiss.IndexNSGFlat_swigregister(IndexNSGFlat)
+
+class OnDiskOneList(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    size = property(_swigfaiss.OnDiskOneList_size_get, _swigfaiss.OnDiskOneList_size_set)
+    capacity = property(_swigfaiss.OnDiskOneList_capacity_get, _swigfaiss.OnDiskOneList_capacity_set)
+    offset = property(_swigfaiss.OnDiskOneList_offset_get, _swigfaiss.OnDiskOneList_offset_set)
+
+    def __init__(self):
+        _swigfaiss.OnDiskOneList_swiginit(self, _swigfaiss.new_OnDiskOneList())
+    __swig_destroy__ = _swigfaiss.delete_OnDiskOneList
+
+# Register OnDiskOneList in _swigfaiss:
+_swigfaiss.OnDiskOneList_swigregister(OnDiskOneList)
+
+class OnDiskInvertedLists(InvertedLists):
+    r"""
+     On-disk storage of inverted lists.
+
+    The data is stored in a mmapped chunk of memory (base ptointer ptr,
+    size totsize). Each list is a range of memory that contains (object
+    List) that contains:
+
+    - uint8_t codes[capacity * code_size]
+    - followed by idx_t ids[capacity]
+
+    in each of the arrays, the size <= capacity first elements are
+    used, the rest is not initialized.
+
+    Addition and resize are supported by:
+    - roundind up the capacity of the lists to a power of two
+    - maintaining a list of empty slots, sorted by size.
+    - resizing the mmapped block is adjusted as needed.
+
+    An OnDiskInvertedLists is compact if the size == capacity for all
+    lists and there are no available slots.
+
+    Addition to the invlists is slow. For incremental add it is better
+    to use a default ArrayInvertedLists object and convert it to an
+    OnDisk with merge_from.
+
+    When it is known that a set of lists will be accessed, it is useful
+    to call prefetch_lists, that launches a set of threads to read the
+    lists in parallel.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    lists = property(_swigfaiss.OnDiskInvertedLists_lists_get, _swigfaiss.OnDiskInvertedLists_lists_set)
+    slots = property(_swigfaiss.OnDiskInvertedLists_slots_get, _swigfaiss.OnDiskInvertedLists_slots_set)
+    filename = property(_swigfaiss.OnDiskInvertedLists_filename_get, _swigfaiss.OnDiskInvertedLists_filename_set)
+    totsize = property(_swigfaiss.OnDiskInvertedLists_totsize_get, _swigfaiss.OnDiskInvertedLists_totsize_set)
+    ptr = property(_swigfaiss.OnDiskInvertedLists_ptr_get, _swigfaiss.OnDiskInvertedLists_ptr_set)
+    read_only = property(_swigfaiss.OnDiskInvertedLists_read_only_get, _swigfaiss.OnDiskInvertedLists_read_only_set)
+
+    def list_size(self, list_no):
+        return _swigfaiss.OnDiskInvertedLists_list_size(self, list_no)
+
+    def get_codes(self, list_no):
+        return _swigfaiss.OnDiskInvertedLists_get_codes(self, list_no)
+
+    def get_ids(self, list_no):
+        return _swigfaiss.OnDiskInvertedLists_get_ids(self, list_no)
+
+    def add_entries(self, list_no, n_entry, ids, code):
+        return _swigfaiss.OnDiskInvertedLists_add_entries(self, list_no, n_entry, ids, code)
+
+    def update_entries(self, list_no, offset, n_entry, ids, code):
+        return _swigfaiss.OnDiskInvertedLists_update_entries(self, list_no, offset, n_entry, ids, code)
+
+    def resize(self, list_no, new_size):
+        return _swigfaiss.OnDiskInvertedLists_resize(self, list_no, new_size)
+
+    def merge_from(self, ils, n_il, verbose=False):
+        return _swigfaiss.OnDiskInvertedLists_merge_from(self, ils, n_il, verbose)
+
+    def merge_from_1(self, il, verbose=False):
+        r""" same as merge_from for a single invlist"""
+        return _swigfaiss.OnDiskInvertedLists_merge_from_1(self, il, verbose)
+
+    def crop_invlists(self, l0, l1):
+        r""" restrict the inverted lists to l0:l1 without touching the mmapped region"""
+        return _swigfaiss.OnDiskInvertedLists_crop_invlists(self, l0, l1)
+
+    def prefetch_lists(self, list_nos, nlist):
+        return _swigfaiss.OnDiskInvertedLists_prefetch_lists(self, list_nos, nlist)
+    __swig_destroy__ = _swigfaiss.delete_OnDiskInvertedLists
+    locks = property(_swigfaiss.OnDiskInvertedLists_locks_get, _swigfaiss.OnDiskInvertedLists_locks_set)
+    pf = property(_swigfaiss.OnDiskInvertedLists_pf_get, _swigfaiss.OnDiskInvertedLists_pf_set)
+    prefetch_nthread = property(_swigfaiss.OnDiskInvertedLists_prefetch_nthread_get, _swigfaiss.OnDiskInvertedLists_prefetch_nthread_set)
+
+    def do_mmap(self):
+        return _swigfaiss.OnDiskInvertedLists_do_mmap(self)
+
+    def update_totsize(self, new_totsize):
+        return _swigfaiss.OnDiskInvertedLists_update_totsize(self, new_totsize)
+
+    def resize_locked(self, list_no, new_size):
+        return _swigfaiss.OnDiskInvertedLists_resize_locked(self, list_no, new_size)
+
+    def allocate_slot(self, capacity):
+        return _swigfaiss.OnDiskInvertedLists_allocate_slot(self, capacity)
+
+    def free_slot(self, offset, capacity):
+        return _swigfaiss.OnDiskInvertedLists_free_slot(self, offset, capacity)
+
+    def set_all_lists_sizes(self, sizes):
+        r""" override all list sizes and make a packed storage"""
+        return _swigfaiss.OnDiskInvertedLists_set_all_lists_sizes(self, sizes)
+
+    def __init__(self, *args):
+        _swigfaiss.OnDiskInvertedLists_swiginit(self, _swigfaiss.new_OnDiskInvertedLists(*args))
+
+# Register OnDiskInvertedLists in _swigfaiss:
+_swigfaiss.OnDiskInvertedLists_swigregister(OnDiskInvertedLists)
+
+class ZnSphereSearch(object):
+    r"""
+     returns the nearest vertex in the sphere to a query. Returns only
+    the coordinates, not an id.
+
+    Algorithm: all points are derived from a one atom vector up to a
+    permutation and sign changes. The search function finds the most
+    appropriate atom and transformation.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    dimS = property(_swigfaiss.ZnSphereSearch_dimS_get, _swigfaiss.ZnSphereSearch_dimS_set)
+    r2 = property(_swigfaiss.ZnSphereSearch_r2_get, _swigfaiss.ZnSphereSearch_r2_set)
+    natom = property(_swigfaiss.ZnSphereSearch_natom_get, _swigfaiss.ZnSphereSearch_natom_set)
+    voc = property(_swigfaiss.ZnSphereSearch_voc_get, _swigfaiss.ZnSphereSearch_voc_set, doc=r""" size dim * ntatom""")
+
+    def __init__(self, dim, r2):
+        _swigfaiss.ZnSphereSearch_swiginit(self, _swigfaiss.new_ZnSphereSearch(dim, r2))
+
+    def search(self, *args):
+        r"""
+        *Overload 1:*
+        find nearest centroid. x does not need to be normalized
+
+        |
+
+        *Overload 2:*
+        full call. Requires externally-allocated temp space
+
+        |
+
+        *Overload 3:*
+        full call. Requires externally-allocated temp space
+        """
+        return _swigfaiss.ZnSphereSearch_search(self, *args)
+
+    def search_multi(self, n, x, c_out, dp_out):
+        return _swigfaiss.ZnSphereSearch_search_multi(self, n, x, c_out, dp_out)
+    __swig_destroy__ = _swigfaiss.delete_ZnSphereSearch
+
+# Register ZnSphereSearch in _swigfaiss:
+_swigfaiss.ZnSphereSearch_swigregister(ZnSphereSearch)
+
+class EnumeratedVectors(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    nv = property(_swigfaiss.EnumeratedVectors_nv_get, _swigfaiss.EnumeratedVectors_nv_set, doc=r""" size of the collection""")
+    dim = property(_swigfaiss.EnumeratedVectors_dim_get, _swigfaiss.EnumeratedVectors_dim_set)
+
+    def encode(self, x):
+        r""" encode a vector from a collection"""
+        return _swigfaiss.EnumeratedVectors_encode(self, x)
+
+    def decode(self, code, c):
+        r""" decode it"""
+        return _swigfaiss.EnumeratedVectors_decode(self, code, c)
+
+    def encode_multi(self, nc, c, codes):
+        return _swigfaiss.EnumeratedVectors_encode_multi(self, nc, c, codes)
+
+    def decode_multi(self, nc, codes, c):
+        return _swigfaiss.EnumeratedVectors_decode_multi(self, nc, codes, c)
+
+    def find_nn(self, n, codes, nq, xq, idx, dis):
+        return _swigfaiss.EnumeratedVectors_find_nn(self, n, codes, nq, xq, idx, dis)
+    __swig_destroy__ = _swigfaiss.delete_EnumeratedVectors
+
+# Register EnumeratedVectors in _swigfaiss:
+_swigfaiss.EnumeratedVectors_swigregister(EnumeratedVectors)
+
+class Repeat(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    val = property(_swigfaiss.Repeat_val_get, _swigfaiss.Repeat_val_set)
+    n = property(_swigfaiss.Repeat_n_get, _swigfaiss.Repeat_n_set)
+
+    def __init__(self):
+        _swigfaiss.Repeat_swiginit(self, _swigfaiss.new_Repeat())
+    __swig_destroy__ = _swigfaiss.delete_Repeat
+
+# Register Repeat in _swigfaiss:
+_swigfaiss.Repeat_swigregister(Repeat)
+
+class Repeats(object):
+    r"""
+    Repeats: used to encode a vector that has n occurrences of
+    val. Encodes the signs and permutation of the vector. Useful for
+    atoms.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    dim = property(_swigfaiss.Repeats_dim_get, _swigfaiss.Repeats_dim_set)
+    repeats = property(_swigfaiss.Repeats_repeats_get, _swigfaiss.Repeats_repeats_set)
+
+    def __init__(self, dim=0, c=None):
+        _swigfaiss.Repeats_swiginit(self, _swigfaiss.new_Repeats(dim, c))
+
+    def count(self):
+        return _swigfaiss.Repeats_count(self)
+
+    def encode(self, c):
+        return _swigfaiss.Repeats_encode(self, c)
+
+    def decode(self, code, c):
+        return _swigfaiss.Repeats_decode(self, code, c)
+    __swig_destroy__ = _swigfaiss.delete_Repeats
+
+# Register Repeats in _swigfaiss:
+_swigfaiss.Repeats_swigregister(Repeats)
+
+class ZnSphereCodec(ZnSphereSearch, EnumeratedVectors):
+    r"""
+     codec that can return ids for the encoded vectors
+
+    uses the ZnSphereSearch to encode the vector by encoding the
+    permutation and signs. Depends on ZnSphereSearch because it uses
+    the atom numbers
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    code_segments = property(_swigfaiss.ZnSphereCodec_code_segments_get, _swigfaiss.ZnSphereCodec_code_segments_set)
+    nv = property(_swigfaiss.ZnSphereCodec_nv_get, _swigfaiss.ZnSphereCodec_nv_set)
+    code_size = property(_swigfaiss.ZnSphereCodec_code_size_get, _swigfaiss.ZnSphereCodec_code_size_set)
+
+    def __init__(self, dim, r2):
+        _swigfaiss.ZnSphereCodec_swiginit(self, _swigfaiss.new_ZnSphereCodec(dim, r2))
+
+    def search_and_encode(self, x):
+        return _swigfaiss.ZnSphereCodec_search_and_encode(self, x)
+
+    def decode(self, code, c):
+        return _swigfaiss.ZnSphereCodec_decode(self, code, c)
+
+    def encode(self, x):
+        r""" takes vectors that do not need to be centroids"""
+        return _swigfaiss.ZnSphereCodec_encode(self, x)
+    __swig_destroy__ = _swigfaiss.delete_ZnSphereCodec
+
+# Register ZnSphereCodec in _swigfaiss:
+_swigfaiss.ZnSphereCodec_swigregister(ZnSphereCodec)
+
+class ZnSphereCodecRec(EnumeratedVectors):
+    r"""
+     recursive sphere codec
+
+    Uses a recursive decomposition on the dimensions to encode
+    centroids found by the ZnSphereSearch. The codes are *not*
+    compatible with the ones of ZnSpehreCodec
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    r2 = property(_swigfaiss.ZnSphereCodecRec_r2_get, _swigfaiss.ZnSphereCodecRec_r2_set)
+    log2_dim = property(_swigfaiss.ZnSphereCodecRec_log2_dim_get, _swigfaiss.ZnSphereCodecRec_log2_dim_set)
+    code_size = property(_swigfaiss.ZnSphereCodecRec_code_size_get, _swigfaiss.ZnSphereCodecRec_code_size_set)
+
+    def __init__(self, dim, r2):
+        _swigfaiss.ZnSphereCodecRec_swiginit(self, _swigfaiss.new_ZnSphereCodecRec(dim, r2))
+
+    def encode_centroid(self, c):
+        return _swigfaiss.ZnSphereCodecRec_encode_centroid(self, c)
+
+    def decode(self, code, c):
+        return _swigfaiss.ZnSphereCodecRec_decode(self, code, c)
+
+    def encode(self, x):
+        r"""
+        vectors need to be centroids (does not work on arbitrary
+        vectors)
+        """
+        return _swigfaiss.ZnSphereCodecRec_encode(self, x)
+    all_nv = property(_swigfaiss.ZnSphereCodecRec_all_nv_get, _swigfaiss.ZnSphereCodecRec_all_nv_set)
+    all_nv_cum = property(_swigfaiss.ZnSphereCodecRec_all_nv_cum_get, _swigfaiss.ZnSphereCodecRec_all_nv_cum_set)
+    decode_cache_ld = property(_swigfaiss.ZnSphereCodecRec_decode_cache_ld_get, _swigfaiss.ZnSphereCodecRec_decode_cache_ld_set)
+    decode_cache = property(_swigfaiss.ZnSphereCodecRec_decode_cache_get, _swigfaiss.ZnSphereCodecRec_decode_cache_set)
+
+    def get_nv(self, ld, r2a):
+        return _swigfaiss.ZnSphereCodecRec_get_nv(self, ld, r2a)
+
+    def get_nv_cum(self, ld, r2t, r2a):
+        return _swigfaiss.ZnSphereCodecRec_get_nv_cum(self, ld, r2t, r2a)
+
+    def set_nv_cum(self, ld, r2t, r2a, v):
+        return _swigfaiss.ZnSphereCodecRec_set_nv_cum(self, ld, r2t, r2a, v)
+    __swig_destroy__ = _swigfaiss.delete_ZnSphereCodecRec
+
+# Register ZnSphereCodecRec in _swigfaiss:
+_swigfaiss.ZnSphereCodecRec_swigregister(ZnSphereCodecRec)
+
+class ZnSphereCodecAlt(ZnSphereCodec):
+    r"""
+     Codec that uses the recursive codec if dim is a power of 2 and
+    the regular one otherwise
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    use_rec = property(_swigfaiss.ZnSphereCodecAlt_use_rec_get, _swigfaiss.ZnSphereCodecAlt_use_rec_set)
+    znc_rec = property(_swigfaiss.ZnSphereCodecAlt_znc_rec_get, _swigfaiss.ZnSphereCodecAlt_znc_rec_set)
+
+    def __init__(self, dim, r2):
+        _swigfaiss.ZnSphereCodecAlt_swiginit(self, _swigfaiss.new_ZnSphereCodecAlt(dim, r2))
+
+    def encode(self, x):
+        return _swigfaiss.ZnSphereCodecAlt_encode(self, x)
+
+    def decode(self, code, c):
+        return _swigfaiss.ZnSphereCodecAlt_decode(self, code, c)
+    __swig_destroy__ = _swigfaiss.delete_ZnSphereCodecAlt
+
+# Register ZnSphereCodecAlt in _swigfaiss:
+_swigfaiss.ZnSphereCodecAlt_swigregister(ZnSphereCodecAlt)
+
+class IndexLattice(Index):
+    r""" Index that encodes a vector with a series of Zn lattice quantizers"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nsq = property(_swigfaiss.IndexLattice_nsq_get, _swigfaiss.IndexLattice_nsq_set, doc=r""" number of sub-vectors""")
+    dsq = property(_swigfaiss.IndexLattice_dsq_get, _swigfaiss.IndexLattice_dsq_set, doc=r""" dimension of sub-vectors""")
+    zn_sphere_codec = property(_swigfaiss.IndexLattice_zn_sphere_codec_get, _swigfaiss.IndexLattice_zn_sphere_codec_set, doc=r""" the lattice quantizer""")
+    scale_nbit = property(_swigfaiss.IndexLattice_scale_nbit_get, _swigfaiss.IndexLattice_scale_nbit_set, doc=r""" nb bits used to encode the scale, per subvector""")
+    lattice_nbit = property(_swigfaiss.IndexLattice_lattice_nbit_get, _swigfaiss.IndexLattice_lattice_nbit_set)
+    code_size = property(_swigfaiss.IndexLattice_code_size_get, _swigfaiss.IndexLattice_code_size_set, doc=r""" total, in bytes""")
+    trained = property(_swigfaiss.IndexLattice_trained_get, _swigfaiss.IndexLattice_trained_set, doc=r""" mins and maxes of the vector norms, per subquantizer""")
+
+    def __init__(self, d, nsq, scale_nbit, r2):
+        _swigfaiss.IndexLattice_swiginit(self, _swigfaiss.new_IndexLattice(d, nsq, scale_nbit, r2))
+
+    def train(self, n, x):
+        return _swigfaiss.IndexLattice_train(self, n, x)
+
+    def sa_code_size(self):
+        return _swigfaiss.IndexLattice_sa_code_size(self)
+
+    def sa_encode(self, n, x, bytes):
+        return _swigfaiss.IndexLattice_sa_encode(self, n, x, bytes)
+
+    def sa_decode(self, n, bytes, x):
+        return _swigfaiss.IndexLattice_sa_decode(self, n, bytes, x)
+
+    def add(self, n, x):
+        r""" not implemented"""
+        return _swigfaiss.IndexLattice_add(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexLattice_search(self, n, x, k, distances, labels)
+
+    def reset(self):
+        return _swigfaiss.IndexLattice_reset(self)
+    __swig_destroy__ = _swigfaiss.delete_IndexLattice
+
+# Register IndexLattice in _swigfaiss:
+_swigfaiss.IndexLattice_swigregister(IndexLattice)
+
+class IVFPQSearchParameters(IVFSearchParameters):
+    r"""
+    Copyright (c) Facebook, Inc. and its affiliates.
+
+    This source code is licensed under the MIT license found in the
+    LICENSE file in the root directory of this source tree.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    scan_table_threshold = property(_swigfaiss.IVFPQSearchParameters_scan_table_threshold_get, _swigfaiss.IVFPQSearchParameters_scan_table_threshold_set, doc=r""" use table computation or on-the-fly?""")
+    polysemous_ht = property(_swigfaiss.IVFPQSearchParameters_polysemous_ht_get, _swigfaiss.IVFPQSearchParameters_polysemous_ht_set, doc=r""" Hamming thresh for polysemous filtering""")
+
+    def __init__(self):
+        _swigfaiss.IVFPQSearchParameters_swiginit(self, _swigfaiss.new_IVFPQSearchParameters())
+    __swig_destroy__ = _swigfaiss.delete_IVFPQSearchParameters
+
+# Register IVFPQSearchParameters in _swigfaiss:
+_swigfaiss.IVFPQSearchParameters_swigregister(IVFPQSearchParameters)
+
+class IndexIVFPQ(IndexIVF):
+    r"""
+     Inverted file with Product Quantizer encoding. Each residual
+    vector is encoded as a product quantizer code.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    by_residual = property(_swigfaiss.IndexIVFPQ_by_residual_get, _swigfaiss.IndexIVFPQ_by_residual_set, doc=r""" Encode residual or plain vector?""")
+    pq = property(_swigfaiss.IndexIVFPQ_pq_get, _swigfaiss.IndexIVFPQ_pq_set, doc=r""" produces the codes""")
+    do_polysemous_training = property(_swigfaiss.IndexIVFPQ_do_polysemous_training_get, _swigfaiss.IndexIVFPQ_do_polysemous_training_set, doc=r""" reorder PQ centroids after training?""")
+    polysemous_training = property(_swigfaiss.IndexIVFPQ_polysemous_training_get, _swigfaiss.IndexIVFPQ_polysemous_training_set, doc=r""" if NULL, use default""")
+    scan_table_threshold = property(_swigfaiss.IndexIVFPQ_scan_table_threshold_get, _swigfaiss.IndexIVFPQ_scan_table_threshold_set, doc=r""" use table computation or on-the-fly?""")
+    polysemous_ht = property(_swigfaiss.IndexIVFPQ_polysemous_ht_get, _swigfaiss.IndexIVFPQ_polysemous_ht_set, doc=r""" Hamming thresh for polysemous filtering""")
+    use_precomputed_table = property(_swigfaiss.IndexIVFPQ_use_precomputed_table_get, _swigfaiss.IndexIVFPQ_use_precomputed_table_set, doc=r"""
+     Precompute table that speed up query preprocessing at some
+    memory cost (used only for by_residual with L2 metric)
+    """)
+    precomputed_table = property(_swigfaiss.IndexIVFPQ_precomputed_table_get, _swigfaiss.IndexIVFPQ_precomputed_table_set, doc=r"""
+    if use_precompute_table
+    size nlist * pq.M * pq.ksub
+    """)
+
+    def encode_vectors(self, n, x, list_nos, codes, include_listnos=False):
+        return _swigfaiss.IndexIVFPQ_encode_vectors(self, n, x, list_nos, codes, include_listnos)
+
+    def sa_decode(self, n, bytes, x):
+        return _swigfaiss.IndexIVFPQ_sa_decode(self, n, bytes, x)
+
+    def add_core(self, n, x, xids, precomputed_idx):
+        return _swigfaiss.IndexIVFPQ_add_core(self, n, x, xids, precomputed_idx)
+
+    def add_core_o(self, n, x, xids, residuals_2, precomputed_idx=None):
+        r"""
+        same as add_core, also:
+        - output 2nd level residuals if residuals_2 != NULL
+        - accepts precomputed_idx = nullptr
+        """
+        return _swigfaiss.IndexIVFPQ_add_core_o(self, n, x, xids, residuals_2, precomputed_idx)
+
+    def train_residual(self, n, x):
+        r""" trains the product quantizer"""
+        return _swigfaiss.IndexIVFPQ_train_residual(self, n, x)
+
+    def train_residual_o(self, n, x, residuals_2):
+        r""" same as train_residual, also output 2nd level residuals"""
+        return _swigfaiss.IndexIVFPQ_train_residual_o(self, n, x, residuals_2)
+
+    def reconstruct_from_offset(self, list_no, offset, recons):
+        return _swigfaiss.IndexIVFPQ_reconstruct_from_offset(self, list_no, offset, recons)
+
+    def find_duplicates(self, ids, lims):
+        r"""
+         Find exact duplicates in the dataset.
+
+        the duplicates are returned in pre-allocated arrays (see the
+        max sizes).
+
+        :type lims: int
+        :param lims:   limits between groups of duplicates
+                           (max size ntotal / 2 + 1)
+        :type ids: int
+        :param ids:    ids[lims[i]] : ids[lims[i+1]-1] is a group of
+                           duplicates (max size ntotal)
+        :rtype: int
+        :return: n      number of groups found
+        """
+        return _swigfaiss.IndexIVFPQ_find_duplicates(self, ids, lims)
+
+    def encode(self, key, x, code):
+        return _swigfaiss.IndexIVFPQ_encode(self, key, x, code)
+
+    def encode_multiple(self, n, keys, x, codes, compute_keys=False):
+        r"""
+         Encode multiple vectors
+
+        :type n: int
+        :param n:       nb vectors to encode
+        :type keys: int
+        :param keys:    posting list ids for those vectors (size n)
+        :type x: float
+        :param x:       vectors (size n * d)
+        :type codes: uint8_t
+        :param codes:   output codes (size n * code_size)
+        :type compute_keys: boolean, optional
+        :param compute_keys:  if false, assume keys are precomputed,
+                                 otherwise compute them
+        """
+        return _swigfaiss.IndexIVFPQ_encode_multiple(self, n, keys, x, codes, compute_keys)
+
+    def decode_multiple(self, n, keys, xcodes, x):
+        r""" inverse of encode_multiple"""
+        return _swigfaiss.IndexIVFPQ_decode_multiple(self, n, keys, xcodes, x)
+
+    def get_InvertedListScanner(self, store_pairs):
+        return _swigfaiss.IndexIVFPQ_get_InvertedListScanner(self, store_pairs)
+
+    def precompute_table(self):
+        r""" build precomputed table"""
+        return _swigfaiss.IndexIVFPQ_precompute_table(self)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexIVFPQ_swiginit(self, _swigfaiss.new_IndexIVFPQ(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexIVFPQ
+
+# Register IndexIVFPQ in _swigfaiss:
+_swigfaiss.IndexIVFPQ_swigregister(IndexIVFPQ)
+
+
+def initialize_IVFPQ_precomputed_table(use_precomputed_table, quantizer, pq, precomputed_table, verbose):
+    r"""
+     Pre-compute distance tables for IVFPQ with by-residual and METRIC_L2
+
+    :type use_precomputed_table: int
+    :param use_precomputed_table: (I/O)
+               =-1: force disable
+               =0: decide heuristically (default: use tables only if they are
+                   < precomputed_tables_max_bytes), set use_precomputed_table on
+        output =1: tables that work for all quantizers (size 256 * nlist * M) =2:
+        specific version for MultiIndexQuantizer (much more compact)
+    :type precomputed_table: faiss::AlignedTable< float,32 >
+    :param precomputed_table: precomputed table to initialize
+    """
+    return _swigfaiss.initialize_IVFPQ_precomputed_table(use_precomputed_table, quantizer, pq, precomputed_table, verbose)
+class IndexIVFPQStats(object):
+    r"""
+    statistics are robust to internal threading, but not if
+    IndexIVFPQ::search_preassigned is called by multiple threads
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nrefine = property(_swigfaiss.IndexIVFPQStats_nrefine_get, _swigfaiss.IndexIVFPQStats_nrefine_set, doc=r""" nb of refines (IVFPQR)""")
+    n_hamming_pass = property(_swigfaiss.IndexIVFPQStats_n_hamming_pass_get, _swigfaiss.IndexIVFPQStats_n_hamming_pass_set, doc=r""" nb of passed Hamming distance tests (for polysemous)""")
+    search_cycles = property(_swigfaiss.IndexIVFPQStats_search_cycles_get, _swigfaiss.IndexIVFPQStats_search_cycles_set)
+    refine_cycles = property(_swigfaiss.IndexIVFPQStats_refine_cycles_get, _swigfaiss.IndexIVFPQStats_refine_cycles_set, doc=r""" only for IVFPQR""")
+
+    def __init__(self):
+        _swigfaiss.IndexIVFPQStats_swiginit(self, _swigfaiss.new_IndexIVFPQStats())
+
+    def reset(self):
+        return _swigfaiss.IndexIVFPQStats_reset(self)
+    __swig_destroy__ = _swigfaiss.delete_IndexIVFPQStats
+
+# Register IndexIVFPQStats in _swigfaiss:
+_swigfaiss.IndexIVFPQStats_swigregister(IndexIVFPQStats)
+
+class IndexIVFPQR(IndexIVFPQ):
+    r""" Index with an additional level of PQ refinement"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    refine_pq = property(_swigfaiss.IndexIVFPQR_refine_pq_get, _swigfaiss.IndexIVFPQR_refine_pq_set, doc=r""" 3rd level quantizer""")
+    refine_codes = property(_swigfaiss.IndexIVFPQR_refine_codes_get, _swigfaiss.IndexIVFPQR_refine_codes_set, doc=r""" corresponding codes""")
+    k_factor = property(_swigfaiss.IndexIVFPQR_k_factor_get, _swigfaiss.IndexIVFPQR_k_factor_set, doc=r""" factor between k requested in search and the k requested from the IVFPQ""")
+
+    def reset(self):
+        return _swigfaiss.IndexIVFPQR_reset(self)
+
+    def remove_ids(self, sel):
+        return _swigfaiss.IndexIVFPQR_remove_ids(self, sel)
+
+    def train_residual(self, n, x):
+        r""" trains the two product quantizers"""
+        return _swigfaiss.IndexIVFPQR_train_residual(self, n, x)
+
+    def add_with_ids(self, n, x, xids):
+        return _swigfaiss.IndexIVFPQR_add_with_ids(self, n, x, xids)
+
+    def add_core(self, n, x, xids, precomputed_idx):
+        r""" same as add_with_ids, but optionally use the precomputed list ids"""
+        return _swigfaiss.IndexIVFPQR_add_core(self, n, x, xids, precomputed_idx)
+
+    def reconstruct_from_offset(self, list_no, offset, recons):
+        return _swigfaiss.IndexIVFPQR_reconstruct_from_offset(self, list_no, offset, recons)
+
+    def merge_from(self, other, add_id):
+        return _swigfaiss.IndexIVFPQR_merge_from(self, other, add_id)
+
+    def search_preassigned(self, n, x, k, assign, centroid_dis, distances, labels, store_pairs, params=None, stats=None):
+        return _swigfaiss.IndexIVFPQR_search_preassigned(self, n, x, k, assign, centroid_dis, distances, labels, store_pairs, params, stats)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexIVFPQR_swiginit(self, _swigfaiss.new_IndexIVFPQR(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexIVFPQR
+
+# Register IndexIVFPQR in _swigfaiss:
+_swigfaiss.IndexIVFPQR_swigregister(IndexIVFPQR)
+
+class Index2Layer(IndexFlatCodes):
+    r"""
+     Same as an IndexIVFPQ without the inverted lists: codes are stored
+    sequentially
+
+    The class is mainly inteded to store encoded vectors that can be
+    accessed randomly, the search function is not implemented.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    q1 = property(_swigfaiss.Index2Layer_q1_get, _swigfaiss.Index2Layer_q1_set, doc=r""" first level quantizer""")
+    pq = property(_swigfaiss.Index2Layer_pq_get, _swigfaiss.Index2Layer_pq_set, doc=r""" second level quantizer is always a PQ""")
+    code_size_1 = property(_swigfaiss.Index2Layer_code_size_1_get, _swigfaiss.Index2Layer_code_size_1_set, doc=r""" size of the code for the first level (ceil(log8(q1.nlist)))""")
+    code_size_2 = property(_swigfaiss.Index2Layer_code_size_2_get, _swigfaiss.Index2Layer_code_size_2_set, doc=r""" size of the code for the second level""")
+
+    def __init__(self, *args):
+        _swigfaiss.Index2Layer_swiginit(self, _swigfaiss.new_Index2Layer(*args))
+    __swig_destroy__ = _swigfaiss.delete_Index2Layer
+
+    def train(self, n, x):
+        return _swigfaiss.Index2Layer_train(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        r""" not implemented"""
+        return _swigfaiss.Index2Layer_search(self, n, x, k, distances, labels)
+
+    def get_distance_computer(self):
+        return _swigfaiss.Index2Layer_get_distance_computer(self)
+
+    def transfer_to_IVFPQ(self, other):
+        r""" transfer the flat codes to an IVFPQ index"""
+        return _swigfaiss.Index2Layer_transfer_to_IVFPQ(self, other)
+
+    def sa_encode(self, n, x, bytes):
+        return _swigfaiss.Index2Layer_sa_encode(self, n, x, bytes)
+
+    def sa_decode(self, n, bytes, x):
+        return _swigfaiss.Index2Layer_sa_decode(self, n, bytes, x)
+
+# Register Index2Layer in _swigfaiss:
+_swigfaiss.Index2Layer_swigregister(Index2Layer)
+
+class IndexPQFastScan(Index):
+    r"""
+     Fast scan version of IndexPQ. Works for 4-bit PQ for now.
+
+    The codes are not stored sequentially but grouped in blocks of size bbs.
+    This makes it possible to compute distances quickly with SIMD instructions.
+
+    Implementations:
+    12: blocked loop with internal loop on Q with qbs
+    13: same with reservoir accumulator to store results
+    14: no qbs with heap accumulator
+    15: no qbs with reservoir accumulator
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    pq = property(_swigfaiss.IndexPQFastScan_pq_get, _swigfaiss.IndexPQFastScan_pq_set)
+    implem = property(_swigfaiss.IndexPQFastScan_implem_get, _swigfaiss.IndexPQFastScan_implem_set)
+    skip = property(_swigfaiss.IndexPQFastScan_skip_get, _swigfaiss.IndexPQFastScan_skip_set)
+    bbs = property(_swigfaiss.IndexPQFastScan_bbs_get, _swigfaiss.IndexPQFastScan_bbs_set)
+    qbs = property(_swigfaiss.IndexPQFastScan_qbs_get, _swigfaiss.IndexPQFastScan_qbs_set)
+    ntotal2 = property(_swigfaiss.IndexPQFastScan_ntotal2_get, _swigfaiss.IndexPQFastScan_ntotal2_set)
+    M2 = property(_swigfaiss.IndexPQFastScan_M2_get, _swigfaiss.IndexPQFastScan_M2_set)
+    codes = property(_swigfaiss.IndexPQFastScan_codes_get, _swigfaiss.IndexPQFastScan_codes_set)
+    orig_codes = property(_swigfaiss.IndexPQFastScan_orig_codes_get, _swigfaiss.IndexPQFastScan_orig_codes_set)
+
+    def __init__(self, *args):
+        r"""
+        *Overload 1:*
+        build from an existing IndexPQ
+
+        |
+
+        *Overload 2:*
+        build from an existing IndexPQ
+        """
+        _swigfaiss.IndexPQFastScan_swiginit(self, _swigfaiss.new_IndexPQFastScan(*args))
+
+    def train(self, n, x):
+        return _swigfaiss.IndexPQFastScan_train(self, n, x)
+
+    def add(self, n, x):
+        return _swigfaiss.IndexPQFastScan_add(self, n, x)
+
+    def reset(self):
+        return _swigfaiss.IndexPQFastScan_reset(self)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexPQFastScan_search(self, n, x, k, distances, labels)
+
+    def compute_quantized_LUT(self, n, x, lut, normalizers):
+        return _swigfaiss.IndexPQFastScan_compute_quantized_LUT(self, n, x, lut, normalizers)
+    __swig_destroy__ = _swigfaiss.delete_IndexPQFastScan
+
+# Register IndexPQFastScan in _swigfaiss:
+_swigfaiss.IndexPQFastScan_swigregister(IndexPQFastScan)
+
+class FastScanStats(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    t0 = property(_swigfaiss.FastScanStats_t0_get, _swigfaiss.FastScanStats_t0_set)
+    t1 = property(_swigfaiss.FastScanStats_t1_get, _swigfaiss.FastScanStats_t1_set)
+    t2 = property(_swigfaiss.FastScanStats_t2_get, _swigfaiss.FastScanStats_t2_set)
+    t3 = property(_swigfaiss.FastScanStats_t3_get, _swigfaiss.FastScanStats_t3_set)
+
+    def __init__(self):
+        _swigfaiss.FastScanStats_swiginit(self, _swigfaiss.new_FastScanStats())
+
+    def reset(self):
+        return _swigfaiss.FastScanStats_reset(self)
+    __swig_destroy__ = _swigfaiss.delete_FastScanStats
+
+# Register FastScanStats in _swigfaiss:
+_swigfaiss.FastScanStats_swigregister(FastScanStats)
+
+class IndexIVFPQFastScan(IndexIVF):
+    r"""
+     Fast scan version of IVFPQ. Works for 4-bit PQ for now.
+
+    The codes in the inverted lists are not stored sequentially but
+    grouped in blocks of size bbs. This makes it possible to very quickly
+    compute distances with SIMD instructions.
+
+    Implementations (implem):
+    0: auto-select implementation (default)
+    1: orig's search, re-implemented
+    2: orig's search, re-ordered by invlist
+    10: optimizer int16 search, collect results in heap, no qbs
+    11: idem, collect results in reservoir
+    12: optimizer int16 search, collect results in heap, uses qbs
+    13: idem, collect results in reservoir
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    by_residual = property(_swigfaiss.IndexIVFPQFastScan_by_residual_get, _swigfaiss.IndexIVFPQFastScan_by_residual_set, doc=r""" Encode residual or plain vector?""")
+    pq = property(_swigfaiss.IndexIVFPQFastScan_pq_get, _swigfaiss.IndexIVFPQFastScan_pq_set, doc=r""" produces the codes""")
+    bbs = property(_swigfaiss.IndexIVFPQFastScan_bbs_get, _swigfaiss.IndexIVFPQFastScan_bbs_set)
+    M2 = property(_swigfaiss.IndexIVFPQFastScan_M2_get, _swigfaiss.IndexIVFPQFastScan_M2_set)
+    use_precomputed_table = property(_swigfaiss.IndexIVFPQFastScan_use_precomputed_table_get, _swigfaiss.IndexIVFPQFastScan_use_precomputed_table_set, doc=r""" precomputed tables management""")
+    precomputed_table = property(_swigfaiss.IndexIVFPQFastScan_precomputed_table_get, _swigfaiss.IndexIVFPQFastScan_precomputed_table_set, doc=r""" if use_precompute_table size (nlist, pq.M, pq.ksub)""")
+    implem = property(_swigfaiss.IndexIVFPQFastScan_implem_get, _swigfaiss.IndexIVFPQFastScan_implem_set)
+    skip = property(_swigfaiss.IndexIVFPQFastScan_skip_get, _swigfaiss.IndexIVFPQFastScan_skip_set)
+    qbs = property(_swigfaiss.IndexIVFPQFastScan_qbs_get, _swigfaiss.IndexIVFPQFastScan_qbs_set)
+    qbs2 = property(_swigfaiss.IndexIVFPQFastScan_qbs2_get, _swigfaiss.IndexIVFPQFastScan_qbs2_set)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexIVFPQFastScan_swiginit(self, _swigfaiss.new_IndexIVFPQFastScan(*args))
+    orig_invlists = property(_swigfaiss.IndexIVFPQFastScan_orig_invlists_get, _swigfaiss.IndexIVFPQFastScan_orig_invlists_set, doc=r""" orig's inverted lists (for debugging)""")
+
+    def train_residual(self, n, x):
+        return _swigfaiss.IndexIVFPQFastScan_train_residual(self, n, x)
+
+    def precompute_table(self):
+        r""" build precomputed table, possibly updating use_precomputed_table"""
+        return _swigfaiss.IndexIVFPQFastScan_precompute_table(self)
+
+    def encode_vectors(self, n, x, list_nos, codes, include_listno=False):
+        r"""
+        same as the regular IVFPQ encoder. The codes are not reorganized by
+        blocks a that point
+        """
+        return _swigfaiss.IndexIVFPQFastScan_encode_vectors(self, n, x, list_nos, codes, include_listno)
+
+    def add_with_ids(self, n, x, xids):
+        return _swigfaiss.IndexIVFPQFastScan_add_with_ids(self, n, x, xids)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexIVFPQFastScan_search(self, n, x, k, distances, labels)
+
+    def compute_LUT(self, n, x, coarse_ids, coarse_dis, dis_tables, biases):
+        return _swigfaiss.IndexIVFPQFastScan_compute_LUT(self, n, x, coarse_ids, coarse_dis, dis_tables, biases)
+
+    def compute_LUT_uint8(self, n, x, coarse_ids, coarse_dis, dis_tables, biases, normalizers):
+        return _swigfaiss.IndexIVFPQFastScan_compute_LUT_uint8(self, n, x, coarse_ids, coarse_dis, dis_tables, biases, normalizers)
+    __swig_destroy__ = _swigfaiss.delete_IndexIVFPQFastScan
+
+# Register IndexIVFPQFastScan in _swigfaiss:
+_swigfaiss.IndexIVFPQFastScan_swigregister(IndexIVFPQFastScan)
+
+class IVFFastScanStats(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    times = property(_swigfaiss.IVFFastScanStats_times_get, _swigfaiss.IVFFastScanStats_times_set)
+    t_compute_distance_tables = property(_swigfaiss.IVFFastScanStats_t_compute_distance_tables_get, _swigfaiss.IVFFastScanStats_t_compute_distance_tables_set)
+    t_round = property(_swigfaiss.IVFFastScanStats_t_round_get, _swigfaiss.IVFFastScanStats_t_round_set)
+    t_copy_pack = property(_swigfaiss.IVFFastScanStats_t_copy_pack_get, _swigfaiss.IVFFastScanStats_t_copy_pack_set)
+    t_scan = property(_swigfaiss.IVFFastScanStats_t_scan_get, _swigfaiss.IVFFastScanStats_t_scan_set)
+    t_to_flat = property(_swigfaiss.IVFFastScanStats_t_to_flat_get, _swigfaiss.IVFFastScanStats_t_to_flat_set)
+    reservoir_times = property(_swigfaiss.IVFFastScanStats_reservoir_times_get, _swigfaiss.IVFFastScanStats_reservoir_times_set)
+
+    def Mcy_at(self, i):
+        return _swigfaiss.IVFFastScanStats_Mcy_at(self, i)
+
+    def Mcy_reservoir_at(self, i):
+        return _swigfaiss.IVFFastScanStats_Mcy_reservoir_at(self, i)
+
+    def __init__(self):
+        _swigfaiss.IVFFastScanStats_swiginit(self, _swigfaiss.new_IVFFastScanStats())
+
+    def reset(self):
+        return _swigfaiss.IVFFastScanStats_reset(self)
+    __swig_destroy__ = _swigfaiss.delete_IVFFastScanStats
+
+# Register IVFFastScanStats in _swigfaiss:
+_swigfaiss.IVFFastScanStats_swigregister(IVFFastScanStats)
+
+
+def round_uint8_per_column(tab, n, d, a_out=None, b_out=None):
+    r"""
+     Functions to quantize PQ floating-point Look Up Tables (LUT) to uint8, and
+    biases to uint16. The accumulation is supposed to take place in uint16.
+    The quantization coefficients are float (a, b) such that
+
+         original_value = quantized_value * a / b
+
+    The hardest part of the quantization is with multiple LUTs that need to be
+    added up together. In that case, coefficient a has to be chosen so that
+    the sum fits in a uint16 accumulator.
+    """
+    return _swigfaiss.round_uint8_per_column(tab, n, d, a_out, b_out)
+
+def round_uint8_per_column_multi(tab, m, n, d, a_out=None, b_out=None):
+    return _swigfaiss.round_uint8_per_column_multi(tab, m, n, d, a_out, b_out)
+
+def quantize_LUT_and_bias(nprobe, M, ksub, lut_is_3d, LUT, bias, LUTq, M2, biasq, a_out=None, b_out=None):
+    r"""
+     LUT quantization to uint8 and bias to uint16.
+
+    (nprobe, M, ksub, lut_is_3d) determine the size of the the LUT
+
+     LUT input:
+     - 2D size (M, ksub): single matrix per probe (lut_is_3d=false)
+     - 3D size (nprobe, M, ksub): separate LUT per probe (lut_is_3d=true)
+     bias input:
+     - nullptr: bias is 0
+     - size (nprobe): one bias per probe
+     Output:
+     - LUTq uint8 version of the LUT (M size is rounded up to M2)
+     - biasq (or nullptr): uint16 version of the LUT
+     - a, b: scalars to approximate the true distance
+    """
+    return _swigfaiss.quantize_LUT_and_bias(nprobe, M, ksub, lut_is_3d, LUT, bias, LUTq, M2, biasq, a_out, b_out)
+class IndexBinary(object):
+    r"""
+     Abstract structure for a binary index.
+
+    Supports adding vertices and searching them.
+
+    All queries are symmetric because there is no distinction between codes and
+    vectors.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    d = property(_swigfaiss.IndexBinary_d_get, _swigfaiss.IndexBinary_d_set, doc=r""" vector dimension""")
+    code_size = property(_swigfaiss.IndexBinary_code_size_get, _swigfaiss.IndexBinary_code_size_set, doc=r""" number of bytes per vector ( = d / 8 )""")
+    ntotal = property(_swigfaiss.IndexBinary_ntotal_get, _swigfaiss.IndexBinary_ntotal_set, doc=r""" total nb of indexed vectors""")
+    verbose = property(_swigfaiss.IndexBinary_verbose_get, _swigfaiss.IndexBinary_verbose_set, doc=r""" verbosity level""")
+    is_trained = property(_swigfaiss.IndexBinary_is_trained_get, _swigfaiss.IndexBinary_is_trained_set, doc=r"""
+    set if the Index does not require training, or if training is done
+    already
+    """)
+    metric_type = property(_swigfaiss.IndexBinary_metric_type_get, _swigfaiss.IndexBinary_metric_type_set, doc=r""" type of metric this index uses for search""")
+    __swig_destroy__ = _swigfaiss.delete_IndexBinary
+
+    def train(self, n, x):
+        r"""
+         Perform training on a representative set of vectors.
+
+        :type n: int
+        :param n:      nb of training vectors
+        :type x: uint8_t
+        :param x:      training vecors, size n * d / 8
+        """
+        return _swigfaiss.IndexBinary_train(self, n, x)
+
+    def add(self, n, x):
+        r"""
+         Add n vectors of dimension d to the index.
+
+        Vectors are implicitly assigned labels ntotal .. ntotal + n - 1
+        :type x: uint8_t
+        :param x:      input matrix, size n * d / 8
+        """
+        return _swigfaiss.IndexBinary_add(self, n, x)
+
+    def add_with_ids(self, n, x, xids):
+        r"""
+         Same as add, but stores xids instead of sequential ids.
+
+        The default implementation fails with an assertion, as it is
+        not supported by all indexes.
+
+        :type xids: int
+        :param xids: if non-null, ids to store for the vectors (size n)
+        """
+        return _swigfaiss.IndexBinary_add_with_ids(self, n, x, xids)
+
+    def search(self, n, x, k, distances, labels):
+        r"""
+         Query n vectors of dimension d to the index.
+
+        return at most k vectors. If there are not enough results for a
+        query, the result array is padded with -1s.
+
+        :type x: uint8_t
+        :param x:           input vectors to search, size n * d / 8
+        :type labels: int
+        :param labels:      output labels of the NNs, size n*k
+        :type distances: int
+        :param distances:   output pairwise distances, size n*k
+        """
+        return _swigfaiss.IndexBinary_search(self, n, x, k, distances, labels)
+
+    def range_search(self, n, x, radius, result):
+        r"""
+         Query n vectors of dimension d to the index.
+
+        return all vectors with distance < radius. Note that many indexes
+        do not implement the range_search (only the k-NN search is
+        mandatory). The distances are converted to float to reuse the
+        RangeSearchResult structure, but they are integer. By convention,
+        only distances < radius (strict comparison) are returned,
+        ie. radius = 0 does not return any result and 1 returns only
+        exact same vectors.
+
+        :type x: uint8_t
+        :param x:           input vectors to search, size n * d / 8
+        :type radius: int
+        :param radius:      search radius
+        :type result: :py:class:`RangeSearchResult`
+        :param result:      result table
+        """
+        return _swigfaiss.IndexBinary_range_search(self, n, x, radius, result)
+
+    def assign(self, n, x, labels, k=1):
+        r"""
+         Return the indexes of the k vectors closest to the query x.
+
+        This function is identical to search but only returns labels of
+        neighbors.
+        :type x: uint8_t
+        :param x:           input vectors to search, size n * d / 8
+        :type labels: int
+        :param labels:      output labels of the NNs, size n*k
+        """
+        return _swigfaiss.IndexBinary_assign(self, n, x, labels, k)
+
+    def reset(self):
+        r""" Removes all elements from the database."""
+        return _swigfaiss.IndexBinary_reset(self)
+
+    def remove_ids(self, sel):
+        r""" Removes IDs from the index. Not supported by all indexes."""
+        return _swigfaiss.IndexBinary_remove_ids(self, sel)
+
+    def reconstruct(self, key, recons):
+        r"""
+         Reconstruct a stored vector.
+
+        This function may not be defined for some indexes.
+        :type key: int
+        :param key:         id of the vector to reconstruct
+        :type recons: uint8_t
+        :param recons:      reconstucted vector (size d / 8)
+        """
+        return _swigfaiss.IndexBinary_reconstruct(self, key, recons)
+
+    def reconstruct_n(self, i0, ni, recons):
+        r"""
+         Reconstruct vectors i0 to i0 + ni - 1.
+
+        This function may not be defined for some indexes.
+        :type recons: uint8_t
+        :param recons:      reconstucted vectors (size ni * d / 8)
+        """
+        return _swigfaiss.IndexBinary_reconstruct_n(self, i0, ni, recons)
+
+    def search_and_reconstruct(self, n, x, k, distances, labels, recons):
+        r"""
+         Similar to search, but also reconstructs the stored vectors (or an
+        approximation in the case of lossy coding) for the search results.
+
+        If there are not enough results for a query, the resulting array
+        is padded with -1s.
+
+        :type recons: uint8_t
+        :param recons:      reconstructed vectors size (n, k, d)
+        """
+        return _swigfaiss.IndexBinary_search_and_reconstruct(self, n, x, k, distances, labels, recons)
+
+    def display(self):
+        r""" Display the actual class name and some more info."""
+        return _swigfaiss.IndexBinary_display(self)
+
+# Register IndexBinary in _swigfaiss:
+_swigfaiss.IndexBinary_swigregister(IndexBinary)
+
+class IndexBinaryFlat(IndexBinary):
+    r""" Index that stores the full vectors and performs exhaustive search."""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    xb = property(_swigfaiss.IndexBinaryFlat_xb_get, _swigfaiss.IndexBinaryFlat_xb_set, doc=r""" database vectors, size ntotal * d / 8""")
+    use_heap = property(_swigfaiss.IndexBinaryFlat_use_heap_get, _swigfaiss.IndexBinaryFlat_use_heap_set, doc=r"""
+     Select between using a heap or counting to select the k smallest values
+    when scanning inverted lists.
+    """)
+    query_batch_size = property(_swigfaiss.IndexBinaryFlat_query_batch_size_get, _swigfaiss.IndexBinaryFlat_query_batch_size_set)
+
+    def add(self, n, x):
+        return _swigfaiss.IndexBinaryFlat_add(self, n, x)
+
+    def reset(self):
+        return _swigfaiss.IndexBinaryFlat_reset(self)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexBinaryFlat_search(self, n, x, k, distances, labels)
+
+    def range_search(self, n, x, radius, result):
+        return _swigfaiss.IndexBinaryFlat_range_search(self, n, x, radius, result)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.IndexBinaryFlat_reconstruct(self, key, recons)
+
+    def remove_ids(self, sel):
+        r"""
+         Remove some ids. Note that because of the indexing structure,
+        the semantics of this operation are different from the usual ones:
+        the new ids are shifted.
+        """
+        return _swigfaiss.IndexBinaryFlat_remove_ids(self, sel)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexBinaryFlat_swiginit(self, _swigfaiss.new_IndexBinaryFlat(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexBinaryFlat
+
+# Register IndexBinaryFlat in _swigfaiss:
+_swigfaiss.IndexBinaryFlat_swigregister(IndexBinaryFlat)
+
+class IndexBinaryIVF(IndexBinary):
+    r"""
+     Index based on a inverted file (IVF)
+
+    In the inverted file, the quantizer (an IndexBinary instance) provides a
+    quantization index for each vector to be added. The quantization
+    index maps to a list (aka inverted list or posting list), where the
+    id of the vector is stored.
+
+    Otherwise the object is similar to the IndexIVF
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    invlists = property(_swigfaiss.IndexBinaryIVF_invlists_get, _swigfaiss.IndexBinaryIVF_invlists_set, doc=r""" Access to the actual data""")
+    own_invlists = property(_swigfaiss.IndexBinaryIVF_own_invlists_get, _swigfaiss.IndexBinaryIVF_own_invlists_set)
+    nprobe = property(_swigfaiss.IndexBinaryIVF_nprobe_get, _swigfaiss.IndexBinaryIVF_nprobe_set, doc=r""" number of probes at query time""")
+    max_codes = property(_swigfaiss.IndexBinaryIVF_max_codes_get, _swigfaiss.IndexBinaryIVF_max_codes_set, doc=r""" max nb of codes to visit to do a query""")
+    use_heap = property(_swigfaiss.IndexBinaryIVF_use_heap_get, _swigfaiss.IndexBinaryIVF_use_heap_set, doc=r"""
+     Select between using a heap or counting to select the k smallest values
+    when scanning inverted lists.
+    """)
+    direct_map = property(_swigfaiss.IndexBinaryIVF_direct_map_get, _swigfaiss.IndexBinaryIVF_direct_map_set, doc=r""" map for direct access to the elements. Enables reconstruct().""")
+    quantizer = property(_swigfaiss.IndexBinaryIVF_quantizer_get, _swigfaiss.IndexBinaryIVF_quantizer_set, doc=r""" quantizer that maps vectors to inverted lists""")
+    nlist = property(_swigfaiss.IndexBinaryIVF_nlist_get, _swigfaiss.IndexBinaryIVF_nlist_set, doc=r""" number of possible key values""")
+    own_fields = property(_swigfaiss.IndexBinaryIVF_own_fields_get, _swigfaiss.IndexBinaryIVF_own_fields_set, doc=r""" whether object owns the quantizer""")
+    cp = property(_swigfaiss.IndexBinaryIVF_cp_get, _swigfaiss.IndexBinaryIVF_cp_set, doc=r""" to override default clustering params""")
+    clustering_index = property(_swigfaiss.IndexBinaryIVF_clustering_index_get, _swigfaiss.IndexBinaryIVF_clustering_index_set, doc=r""" to override index used during clustering""")
+
+    def __init__(self, *args):
+        _swigfaiss.IndexBinaryIVF_swiginit(self, _swigfaiss.new_IndexBinaryIVF(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexBinaryIVF
+
+    def reset(self):
+        return _swigfaiss.IndexBinaryIVF_reset(self)
+
+    def train(self, n, x):
+        r""" Trains the quantizer"""
+        return _swigfaiss.IndexBinaryIVF_train(self, n, x)
+
+    def add(self, n, x):
+        return _swigfaiss.IndexBinaryIVF_add(self, n, x)
+
+    def add_with_ids(self, n, x, xids):
+        return _swigfaiss.IndexBinaryIVF_add_with_ids(self, n, x, xids)
+
+    def add_core(self, n, x, xids, precomputed_idx):
+        r"""
+         Implementation of vector addition where the vector assignments are
+        predefined.
+
+        :type precomputed_idx: int
+        :param precomputed_idx:    quantization indices for the input vectors
+            (size n)
+        """
+        return _swigfaiss.IndexBinaryIVF_add_core(self, n, x, xids, precomputed_idx)
+
+    def search_preassigned(self, n, x, k, assign, centroid_dis, distances, labels, store_pairs, params=None):
+        r"""
+         Search a set of vectors, that are pre-quantized by the IVF
+         quantizer. Fill in the corresponding heaps with the query
+         results. search() calls this.
+
+        :type n: int
+        :param n:      nb of vectors to query
+        :type x: uint8_t
+        :param x:      query vectors, size nx * d
+        :type assign: int
+        :param assign: coarse quantization indices, size nx * nprobe
+        :type centroid_dis: int
+        :param centroid_dis:
+                          distances to coarse centroids, size nx * nprobe
+        :param distance:
+                          output distances, size n * k
+        :type labels: int
+        :param labels: output labels, size n * k
+        :type store_pairs: boolean
+        :param store_pairs: store inv list index + inv list offset
+                                instead in upper/lower 32 bit of result,
+                                instead of ids (used for reranking).
+        :type params: :py:class:`IVFSearchParameters`, optional
+        :param params: used to override the object's search parameters
+        """
+        return _swigfaiss.IndexBinaryIVF_search_preassigned(self, n, x, k, assign, centroid_dis, distances, labels, store_pairs, params)
+
+    def get_InvertedListScanner(self, store_pairs=False):
+        return _swigfaiss.IndexBinaryIVF_get_InvertedListScanner(self, store_pairs)
+
+    def search(self, n, x, k, distances, labels):
+        r""" assign the vectors, then call search_preassign"""
+        return _swigfaiss.IndexBinaryIVF_search(self, n, x, k, distances, labels)
+
+    def range_search(self, n, x, radius, result):
+        return _swigfaiss.IndexBinaryIVF_range_search(self, n, x, radius, result)
+
+    def range_search_preassigned(self, n, x, radius, assign, centroid_dis, result):
+        return _swigfaiss.IndexBinaryIVF_range_search_preassigned(self, n, x, radius, assign, centroid_dis, result)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.IndexBinaryIVF_reconstruct(self, key, recons)
+
+    def reconstruct_n(self, i0, ni, recons):
+        r"""
+         Reconstruct a subset of the indexed vectors.
+
+        Overrides default implementation to bypass reconstruct() which requires
+        direct_map to be maintained.
+
+        :type i0: int
+        :param i0:     first vector to reconstruct
+        :type ni: int
+        :param ni:     nb of vectors to reconstruct
+        :type recons: uint8_t
+        :param recons: output array of reconstructed vectors, size ni * d / 8
+        """
+        return _swigfaiss.IndexBinaryIVF_reconstruct_n(self, i0, ni, recons)
+
+    def search_and_reconstruct(self, n, x, k, distances, labels, recons):
+        r"""
+         Similar to search, but also reconstructs the stored vectors (or an
+        approximation in the case of lossy coding) for the search results.
+
+        Overrides default implementation to avoid having to maintain direct_map
+        and instead fetch the code offsets through the `store_pairs` flag in
+        search_preassigned().
+
+        :type recons: uint8_t
+        :param recons:      reconstructed vectors size (n, k, d / 8)
+        """
+        return _swigfaiss.IndexBinaryIVF_search_and_reconstruct(self, n, x, k, distances, labels, recons)
+
+    def reconstruct_from_offset(self, list_no, offset, recons):
+        r"""
+         Reconstruct a vector given the location in terms of (inv list index +
+        inv list offset) instead of the id.
+
+        Useful for reconstructing when the direct_map is not maintained and
+        the inv list offset is computed by search_preassigned() with
+        `store_pairs` set.
+        """
+        return _swigfaiss.IndexBinaryIVF_reconstruct_from_offset(self, list_no, offset, recons)
+
+    def remove_ids(self, sel):
+        r""" Dataset manipulation functions"""
+        return _swigfaiss.IndexBinaryIVF_remove_ids(self, sel)
+
+    def merge_from(self, other, add_id):
+        r"""
+         moves the entries from another dataset to self. On output,
+        other is empty. add_id is added to all moved ids (for
+        sequential ids, this would be this->ntotal
+        """
+        return _swigfaiss.IndexBinaryIVF_merge_from(self, other, add_id)
+
+    def get_list_size(self, list_no):
+        return _swigfaiss.IndexBinaryIVF_get_list_size(self, list_no)
+
+    def make_direct_map(self, new_maintain_direct_map=True):
+        r"""
+         intialize a direct map
+
+        :type new_maintain_direct_map: boolean, optional
+        :param new_maintain_direct_map:    if true, create a direct map,
+                                              else clear it
+        """
+        return _swigfaiss.IndexBinaryIVF_make_direct_map(self, new_maintain_direct_map)
+
+    def set_direct_map_type(self, type):
+        return _swigfaiss.IndexBinaryIVF_set_direct_map_type(self, type)
+
+    def replace_invlists(self, il, own=False):
+        return _swigfaiss.IndexBinaryIVF_replace_invlists(self, il, own)
+
+# Register IndexBinaryIVF in _swigfaiss:
+_swigfaiss.IndexBinaryIVF_swigregister(IndexBinaryIVF)
+
+class IndexBinaryFromFloat(IndexBinary):
+    r"""
+     IndexBinary backed by a float Index.
+
+    Supports adding vertices and searching them.
+
+    All queries are symmetric because there is no distinction between codes and
+    vectors.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    index = property(_swigfaiss.IndexBinaryFromFloat_index_get, _swigfaiss.IndexBinaryFromFloat_index_set)
+    own_fields = property(_swigfaiss.IndexBinaryFromFloat_own_fields_get, _swigfaiss.IndexBinaryFromFloat_own_fields_set, doc=r""" Whether object owns the index pointer.""")
+
+    def __init__(self, *args):
+        _swigfaiss.IndexBinaryFromFloat_swiginit(self, _swigfaiss.new_IndexBinaryFromFloat(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexBinaryFromFloat
+
+    def add(self, n, x):
+        return _swigfaiss.IndexBinaryFromFloat_add(self, n, x)
+
+    def reset(self):
+        return _swigfaiss.IndexBinaryFromFloat_reset(self)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexBinaryFromFloat_search(self, n, x, k, distances, labels)
+
+    def train(self, n, x):
+        return _swigfaiss.IndexBinaryFromFloat_train(self, n, x)
+
+# Register IndexBinaryFromFloat in _swigfaiss:
+_swigfaiss.IndexBinaryFromFloat_swigregister(IndexBinaryFromFloat)
+
+class IndexBinaryHNSW(IndexBinary):
+    r"""
+     The HNSW index is a normal random-access index with a HNSW
+    link structure built on top
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    hnsw = property(_swigfaiss.IndexBinaryHNSW_hnsw_get, _swigfaiss.IndexBinaryHNSW_hnsw_set)
+    own_fields = property(_swigfaiss.IndexBinaryHNSW_own_fields_get, _swigfaiss.IndexBinaryHNSW_own_fields_set)
+    storage = property(_swigfaiss.IndexBinaryHNSW_storage_get, _swigfaiss.IndexBinaryHNSW_storage_set)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexBinaryHNSW_swiginit(self, _swigfaiss.new_IndexBinaryHNSW(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexBinaryHNSW
+
+    def get_distance_computer(self):
+        return _swigfaiss.IndexBinaryHNSW_get_distance_computer(self)
+
+    def add(self, n, x):
+        return _swigfaiss.IndexBinaryHNSW_add(self, n, x)
+
+    def train(self, n, x):
+        r""" Trains the storage if needed"""
+        return _swigfaiss.IndexBinaryHNSW_train(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        r""" entry point for search"""
+        return _swigfaiss.IndexBinaryHNSW_search(self, n, x, k, distances, labels)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.IndexBinaryHNSW_reconstruct(self, key, recons)
+
+    def reset(self):
+        return _swigfaiss.IndexBinaryHNSW_reset(self)
+
+# Register IndexBinaryHNSW in _swigfaiss:
+_swigfaiss.IndexBinaryHNSW_swigregister(IndexBinaryHNSW)
+
+class IndexBinaryHash(IndexBinary):
+    r""" just uses the b first bits as a hash value"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    invlists = property(_swigfaiss.IndexBinaryHash_invlists_get, _swigfaiss.IndexBinaryHash_invlists_set)
+    b = property(_swigfaiss.IndexBinaryHash_b_get, _swigfaiss.IndexBinaryHash_b_set)
+    nflip = property(_swigfaiss.IndexBinaryHash_nflip_get, _swigfaiss.IndexBinaryHash_nflip_set)
+
+    def __init__(self, *args):
+        _swigfaiss.IndexBinaryHash_swiginit(self, _swigfaiss.new_IndexBinaryHash(*args))
+
+    def reset(self):
+        return _swigfaiss.IndexBinaryHash_reset(self)
+
+    def add(self, n, x):
+        return _swigfaiss.IndexBinaryHash_add(self, n, x)
+
+    def add_with_ids(self, n, x, xids):
+        return _swigfaiss.IndexBinaryHash_add_with_ids(self, n, x, xids)
+
+    def range_search(self, n, x, radius, result):
+        return _swigfaiss.IndexBinaryHash_range_search(self, n, x, radius, result)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexBinaryHash_search(self, n, x, k, distances, labels)
+
+    def display(self):
+        return _swigfaiss.IndexBinaryHash_display(self)
+
+    def hashtable_size(self):
+        return _swigfaiss.IndexBinaryHash_hashtable_size(self)
+    __swig_destroy__ = _swigfaiss.delete_IndexBinaryHash
+
+# Register IndexBinaryHash in _swigfaiss:
+_swigfaiss.IndexBinaryHash_swigregister(IndexBinaryHash)
+
+class IndexBinaryHashStats(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nq = property(_swigfaiss.IndexBinaryHashStats_nq_get, _swigfaiss.IndexBinaryHashStats_nq_set)
+    n0 = property(_swigfaiss.IndexBinaryHashStats_n0_get, _swigfaiss.IndexBinaryHashStats_n0_set)
+    nlist = property(_swigfaiss.IndexBinaryHashStats_nlist_get, _swigfaiss.IndexBinaryHashStats_nlist_set)
+    ndis = property(_swigfaiss.IndexBinaryHashStats_ndis_get, _swigfaiss.IndexBinaryHashStats_ndis_set)
+
+    def __init__(self):
+        _swigfaiss.IndexBinaryHashStats_swiginit(self, _swigfaiss.new_IndexBinaryHashStats())
+
+    def reset(self):
+        return _swigfaiss.IndexBinaryHashStats_reset(self)
+    __swig_destroy__ = _swigfaiss.delete_IndexBinaryHashStats
+
+# Register IndexBinaryHashStats in _swigfaiss:
+_swigfaiss.IndexBinaryHashStats_swigregister(IndexBinaryHashStats)
+
+class IndexBinaryMultiHash(IndexBinary):
+    r""" just uses the b first bits as a hash value"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    storage = property(_swigfaiss.IndexBinaryMultiHash_storage_get, _swigfaiss.IndexBinaryMultiHash_storage_set)
+    own_fields = property(_swigfaiss.IndexBinaryMultiHash_own_fields_get, _swigfaiss.IndexBinaryMultiHash_own_fields_set)
+    maps = property(_swigfaiss.IndexBinaryMultiHash_maps_get, _swigfaiss.IndexBinaryMultiHash_maps_set)
+    nhash = property(_swigfaiss.IndexBinaryMultiHash_nhash_get, _swigfaiss.IndexBinaryMultiHash_nhash_set, doc=r""" nb of hash maps""")
+    b = property(_swigfaiss.IndexBinaryMultiHash_b_get, _swigfaiss.IndexBinaryMultiHash_b_set, doc=r""" nb bits per hash map""")
+    nflip = property(_swigfaiss.IndexBinaryMultiHash_nflip_get, _swigfaiss.IndexBinaryMultiHash_nflip_set, doc=r""" nb bit flips to use at search time""")
+
+    def __init__(self, *args):
+        _swigfaiss.IndexBinaryMultiHash_swiginit(self, _swigfaiss.new_IndexBinaryMultiHash(*args))
+    __swig_destroy__ = _swigfaiss.delete_IndexBinaryMultiHash
+
+    def reset(self):
+        return _swigfaiss.IndexBinaryMultiHash_reset(self)
+
+    def add(self, n, x):
+        return _swigfaiss.IndexBinaryMultiHash_add(self, n, x)
+
+    def range_search(self, n, x, radius, result):
+        return _swigfaiss.IndexBinaryMultiHash_range_search(self, n, x, radius, result)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexBinaryMultiHash_search(self, n, x, k, distances, labels)
+
+    def hashtable_size(self):
+        return _swigfaiss.IndexBinaryMultiHash_hashtable_size(self)
+
+# Register IndexBinaryMultiHash in _swigfaiss:
+_swigfaiss.IndexBinaryMultiHash_swigregister(IndexBinaryMultiHash)
+
+class ThreadedIndexBase(Index):
+    r"""
+    A holder of indices in a collection of threads
+    The interface to this class itself is not thread safe
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    __swig_destroy__ = _swigfaiss.delete_ThreadedIndexBase
+
+    def addIndex(self, index):
+        r"""
+        override an index that is managed by ourselves.
+        WARNING: once an index is added, it becomes unsafe to touch it from any
+        other thread than that on which is managing it, until we are shut
+        down. Use runOnIndex to perform work on it instead.
+        """
+        return _swigfaiss.ThreadedIndexBase_addIndex(self, index)
+
+    def removeIndex(self, index):
+        r"""
+        Remove an index that is managed by ourselves.
+        This will flush all pending work on that index, and then shut
+        down its managing thread, and will remove the index.
+        """
+        return _swigfaiss.ThreadedIndexBase_removeIndex(self, index)
+
+    def runOnIndex(self, *args):
+        return _swigfaiss.ThreadedIndexBase_runOnIndex(self, *args)
+
+    def reset(self):
+        r"""
+        faiss::Index API
+        All indices receive the same call
+        """
+        return _swigfaiss.ThreadedIndexBase_reset(self)
+
+    def count(self):
+        r""" Returns the number of sub-indices"""
+        return _swigfaiss.ThreadedIndexBase_count(self)
+
+    def at(self, *args):
+        r"""
+        *Overload 1:*
+        Returns the i-th sub-index
+
+        |
+
+        *Overload 2:*
+        Returns the i-th sub-index (const version)
+        """
+        return _swigfaiss.ThreadedIndexBase_at(self, *args)
+    own_fields = property(_swigfaiss.ThreadedIndexBase_own_fields_get, _swigfaiss.ThreadedIndexBase_own_fields_set, doc=r""" Whether or not we are responsible for deleting our contained indices""")
+
+# Register ThreadedIndexBase in _swigfaiss:
+_swigfaiss.ThreadedIndexBase_swigregister(ThreadedIndexBase)
+
+class ThreadedIndexBaseBinary(IndexBinary):
+    r"""
+    A holder of indices in a collection of threads
+    The interface to this class itself is not thread safe
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    __swig_destroy__ = _swigfaiss.delete_ThreadedIndexBaseBinary
+
+    def addIndex(self, index):
+        r"""
+        override an index that is managed by ourselves.
+        WARNING: once an index is added, it becomes unsafe to touch it from any
+        other thread than that on which is managing it, until we are shut
+        down. Use runOnIndex to perform work on it instead.
+        """
+        return _swigfaiss.ThreadedIndexBaseBinary_addIndex(self, index)
+
+    def removeIndex(self, index):
+        r"""
+        Remove an index that is managed by ourselves.
+        This will flush all pending work on that index, and then shut
+        down its managing thread, and will remove the index.
+        """
+        return _swigfaiss.ThreadedIndexBaseBinary_removeIndex(self, index)
+
+    def runOnIndex(self, *args):
+        return _swigfaiss.ThreadedIndexBaseBinary_runOnIndex(self, *args)
+
+    def reset(self):
+        r"""
+        faiss::Index API
+        All indices receive the same call
+        """
+        return _swigfaiss.ThreadedIndexBaseBinary_reset(self)
+
+    def count(self):
+        r""" Returns the number of sub-indices"""
+        return _swigfaiss.ThreadedIndexBaseBinary_count(self)
+
+    def at(self, *args):
+        r"""
+        *Overload 1:*
+        Returns the i-th sub-index
+
+        |
+
+        *Overload 2:*
+        Returns the i-th sub-index (const version)
+        """
+        return _swigfaiss.ThreadedIndexBaseBinary_at(self, *args)
+    own_fields = property(_swigfaiss.ThreadedIndexBaseBinary_own_fields_get, _swigfaiss.ThreadedIndexBaseBinary_own_fields_set, doc=r""" Whether or not we are responsible for deleting our contained indices""")
+
+# Register ThreadedIndexBaseBinary in _swigfaiss:
+_swigfaiss.ThreadedIndexBaseBinary_swigregister(ThreadedIndexBaseBinary)
+
+class IndexShards(ThreadedIndexBase):
+    r"""Index that concatenates the results from several sub-indexes"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        r"""
+        *Overload 1:*
+
+        The dimension that all sub-indices must share will be the dimension of
+        the first sub-index added
+
+        :type threaded: boolean, optional
+        :param threaded:     do we use one thread per sub_index or do
+                                queries sequentially?
+        :type successive_ids: boolean, optional
+        :param successive_ids: should we shift the returned ids by
+                                the size of each sub-index or return them
+                                as they are?
+
+        |
+
+        *Overload 2:*
+
+        :type threaded: boolean, optional
+        :param threaded:     do we use one thread per sub_index or do
+                                queries sequentially?
+        :type successive_ids: boolean, optional
+        :param successive_ids: should we shift the returned ids by
+                                the size of each sub-index or return them
+                                as they are?
+
+        |
+
+        *Overload 3:*
+
+        :type threaded: boolean, optional
+        :param threaded:     do we use one thread per sub_index or do
+                                queries sequentially?
+        :param successive_ids: should we shift the returned ids by
+                                the size of each sub-index or return them
+                                as they are?
+
+        |
+
+        *Overload 4:*
+
+        :param threaded:     do we use one thread per sub_index or do
+                                queries sequentially?
+        :param successive_ids: should we shift the returned ids by
+                                the size of each sub-index or return them
+                                as they are?
+
+        |
+
+        *Overload 5:*
+         int version due to the implicit bool conversion ambiguity of int as
+         dimension
+
+        |
+
+        *Overload 6:*
+         int version due to the implicit bool conversion ambiguity of int as
+         dimension
+
+        |
+
+        *Overload 7:*
+         int version due to the implicit bool conversion ambiguity of int as
+         dimension
+        """
+        _swigfaiss.IndexShards_swiginit(self, _swigfaiss.new_IndexShards(*args))
+
+    def add_shard(self, index):
+        r""" Alias for addIndex()"""
+        return _swigfaiss.IndexShards_add_shard(self, index)
+
+    def remove_shard(self, index):
+        r""" Alias for removeIndex()"""
+        return _swigfaiss.IndexShards_remove_shard(self, index)
+
+    def add(self, n, x):
+        r""" supported only for sub-indices that implement add_with_ids"""
+        return _swigfaiss.IndexShards_add(self, n, x)
+
+    def add_with_ids(self, n, x, xids):
+        r"""
+        Cases (successive_ids, xids):
+        - true, non-NULL       ERROR: it makes no sense to pass in ids and
+                               request them to be shifted
+        - true, NULL           OK, but should be called only once (calls add()
+                               on sub-indexes).
+        - false, non-NULL      OK: will call add_with_ids with passed in xids
+                               distributed evenly over shards
+        - false, NULL          OK: will call add_with_ids on each sub-index,
+                               starting at ntotal
+        """
+        return _swigfaiss.IndexShards_add_with_ids(self, n, x, xids)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexShards_search(self, n, x, k, distances, labels)
+
+    def train(self, n, x):
+        return _swigfaiss.IndexShards_train(self, n, x)
+    successive_ids = property(_swigfaiss.IndexShards_successive_ids_get, _swigfaiss.IndexShards_successive_ids_set)
+
+    def syncWithSubIndexes(self):
+        r"""
+        Synchronize the top-level index (IndexShards) with data in the
+        sub-indices
+        """
+        return _swigfaiss.IndexShards_syncWithSubIndexes(self)
+    __swig_destroy__ = _swigfaiss.delete_IndexShards
+
+# Register IndexShards in _swigfaiss:
+_swigfaiss.IndexShards_swigregister(IndexShards)
+
+class IndexBinaryShards(ThreadedIndexBaseBinary):
+    r"""Index that concatenates the results from several sub-indexes"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        r"""
+        *Overload 1:*
+
+        The dimension that all sub-indices must share will be the dimension of
+        the first sub-index added
+
+        :type threaded: boolean, optional
+        :param threaded:     do we use one thread per sub_index or do
+                                queries sequentially?
+        :type successive_ids: boolean, optional
+        :param successive_ids: should we shift the returned ids by
+                                the size of each sub-index or return them
+                                as they are?
+
+        |
+
+        *Overload 2:*
+
+        :type threaded: boolean, optional
+        :param threaded:     do we use one thread per sub_index or do
+                                queries sequentially?
+        :type successive_ids: boolean, optional
+        :param successive_ids: should we shift the returned ids by
+                                the size of each sub-index or return them
+                                as they are?
+
+        |
+
+        *Overload 3:*
+
+        :type threaded: boolean, optional
+        :param threaded:     do we use one thread per sub_index or do
+                                queries sequentially?
+        :param successive_ids: should we shift the returned ids by
+                                the size of each sub-index or return them
+                                as they are?
+
+        |
+
+        *Overload 4:*
+
+        :param threaded:     do we use one thread per sub_index or do
+                                queries sequentially?
+        :param successive_ids: should we shift the returned ids by
+                                the size of each sub-index or return them
+                                as they are?
+
+        |
+
+        *Overload 5:*
+         int version due to the implicit bool conversion ambiguity of int as
+         dimension
+
+        |
+
+        *Overload 6:*
+         int version due to the implicit bool conversion ambiguity of int as
+         dimension
+
+        |
+
+        *Overload 7:*
+         int version due to the implicit bool conversion ambiguity of int as
+         dimension
+        """
+        _swigfaiss.IndexBinaryShards_swiginit(self, _swigfaiss.new_IndexBinaryShards(*args))
+
+    def add_shard(self, index):
+        r""" Alias for addIndex()"""
+        return _swigfaiss.IndexBinaryShards_add_shard(self, index)
+
+    def remove_shard(self, index):
+        r""" Alias for removeIndex()"""
+        return _swigfaiss.IndexBinaryShards_remove_shard(self, index)
+
+    def add(self, n, x):
+        r""" supported only for sub-indices that implement add_with_ids"""
+        return _swigfaiss.IndexBinaryShards_add(self, n, x)
+
+    def add_with_ids(self, n, x, xids):
+        r"""
+        Cases (successive_ids, xids):
+        - true, non-NULL       ERROR: it makes no sense to pass in ids and
+                               request them to be shifted
+        - true, NULL           OK, but should be called only once (calls add()
+                               on sub-indexes).
+        - false, non-NULL      OK: will call add_with_ids with passed in xids
+                               distributed evenly over shards
+        - false, NULL          OK: will call add_with_ids on each sub-index,
+                               starting at ntotal
+        """
+        return _swigfaiss.IndexBinaryShards_add_with_ids(self, n, x, xids)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexBinaryShards_search(self, n, x, k, distances, labels)
+
+    def train(self, n, x):
+        return _swigfaiss.IndexBinaryShards_train(self, n, x)
+    successive_ids = property(_swigfaiss.IndexBinaryShards_successive_ids_get, _swigfaiss.IndexBinaryShards_successive_ids_set)
+
+    def syncWithSubIndexes(self):
+        r"""
+        Synchronize the top-level index (IndexShards) with data in the
+        sub-indices
+        """
+        return _swigfaiss.IndexBinaryShards_syncWithSubIndexes(self)
+    __swig_destroy__ = _swigfaiss.delete_IndexBinaryShards
+
+# Register IndexBinaryShards in _swigfaiss:
+_swigfaiss.IndexBinaryShards_swigregister(IndexBinaryShards)
+
+class IndexReplicas(ThreadedIndexBase):
+    r"""
+    Takes individual faiss::Index instances, and splits queries for
+    sending to each Index instance, and joins the results together
+    when done.
+    Each index is managed by a separate CPU thread.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        r"""
+        *Overload 1:*
+        The dimension that all sub-indices must share will be the dimension of
+        the first sub-index added
+        :type threaded: boolean, optional
+        :param threaded: do we use one thread per sub-index or do queries
+            sequentially?
+
+        |
+
+        *Overload 2:*
+        :type d: int
+        :param d: the dimension that all sub-indices must share
+        :type threaded: boolean, optional
+        :param threaded: do we use one thread per sub index or do queries
+            sequentially?
+
+        |
+
+        *Overload 3:*
+        :type d: int
+        :param d: the dimension that all sub-indices must share
+        :param threaded: do we use one thread per sub index or do queries
+            sequentially?
+
+        |
+
+        *Overload 4:*
+        int version due to the implicit bool conversion ambiguity of int as
+        dimension
+
+        |
+
+        *Overload 5:*
+        int version due to the implicit bool conversion ambiguity of int as
+        dimension
+        """
+        _swigfaiss.IndexReplicas_swiginit(self, _swigfaiss.new_IndexReplicas(*args))
+
+    def add_replica(self, index):
+        r""" Alias for addIndex()"""
+        return _swigfaiss.IndexReplicas_add_replica(self, index)
+
+    def remove_replica(self, index):
+        r""" Alias for removeIndex()"""
+        return _swigfaiss.IndexReplicas_remove_replica(self, index)
+
+    def train(self, n, x):
+        r"""
+        faiss::Index API
+        All indices receive the same call
+        """
+        return _swigfaiss.IndexReplicas_train(self, n, x)
+
+    def add(self, n, x):
+        r"""
+        faiss::Index API
+        All indices receive the same call
+        """
+        return _swigfaiss.IndexReplicas_add(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        r"""
+        faiss::Index API
+        Query is partitioned into a slice for each sub-index
+        split by ceil(n / #indices) for our sub-indices
+        """
+        return _swigfaiss.IndexReplicas_search(self, n, x, k, distances, labels)
+
+    def reconstruct(self, arg2, v):
+        r""" reconstructs from the first index"""
+        return _swigfaiss.IndexReplicas_reconstruct(self, arg2, v)
+
+    def syncWithSubIndexes(self):
+        r"""
+        Synchronize the top-level index (IndexShards) with data in the
+        sub-indices
+        """
+        return _swigfaiss.IndexReplicas_syncWithSubIndexes(self)
+    __swig_destroy__ = _swigfaiss.delete_IndexReplicas
+
+# Register IndexReplicas in _swigfaiss:
+_swigfaiss.IndexReplicas_swigregister(IndexReplicas)
+
+class IndexBinaryReplicas(ThreadedIndexBaseBinary):
+    r"""
+    Takes individual faiss::Index instances, and splits queries for
+    sending to each Index instance, and joins the results together
+    when done.
+    Each index is managed by a separate CPU thread.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        r"""
+        *Overload 1:*
+        The dimension that all sub-indices must share will be the dimension of
+        the first sub-index added
+        :type threaded: boolean, optional
+        :param threaded: do we use one thread per sub-index or do queries
+            sequentially?
+
+        |
+
+        *Overload 2:*
+        :type d: int
+        :param d: the dimension that all sub-indices must share
+        :type threaded: boolean, optional
+        :param threaded: do we use one thread per sub index or do queries
+            sequentially?
+
+        |
+
+        *Overload 3:*
+        :type d: int
+        :param d: the dimension that all sub-indices must share
+        :param threaded: do we use one thread per sub index or do queries
+            sequentially?
+
+        |
+
+        *Overload 4:*
+        int version due to the implicit bool conversion ambiguity of int as
+        dimension
+
+        |
+
+        *Overload 5:*
+        int version due to the implicit bool conversion ambiguity of int as
+        dimension
+        """
+        _swigfaiss.IndexBinaryReplicas_swiginit(self, _swigfaiss.new_IndexBinaryReplicas(*args))
+
+    def add_replica(self, index):
+        r""" Alias for addIndex()"""
+        return _swigfaiss.IndexBinaryReplicas_add_replica(self, index)
+
+    def remove_replica(self, index):
+        r""" Alias for removeIndex()"""
+        return _swigfaiss.IndexBinaryReplicas_remove_replica(self, index)
+
+    def train(self, n, x):
+        r"""
+        faiss::Index API
+        All indices receive the same call
+        """
+        return _swigfaiss.IndexBinaryReplicas_train(self, n, x)
+
+    def add(self, n, x):
+        r"""
+        faiss::Index API
+        All indices receive the same call
+        """
+        return _swigfaiss.IndexBinaryReplicas_add(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        r"""
+        faiss::Index API
+        Query is partitioned into a slice for each sub-index
+        split by ceil(n / #indices) for our sub-indices
+        """
+        return _swigfaiss.IndexBinaryReplicas_search(self, n, x, k, distances, labels)
+
+    def reconstruct(self, arg2, v):
+        r""" reconstructs from the first index"""
+        return _swigfaiss.IndexBinaryReplicas_reconstruct(self, arg2, v)
+
+    def syncWithSubIndexes(self):
+        r"""
+        Synchronize the top-level index (IndexShards) with data in the
+        sub-indices
+        """
+        return _swigfaiss.IndexBinaryReplicas_syncWithSubIndexes(self)
+    __swig_destroy__ = _swigfaiss.delete_IndexBinaryReplicas
+
+# Register IndexBinaryReplicas in _swigfaiss:
+_swigfaiss.IndexBinaryReplicas_swigregister(IndexBinaryReplicas)
+
+class IndexSplitVectors(Index):
+    r"""
+     splits input vectors in segments and assigns each segment to a sub-index
+    used to distribute a MultiIndexQuantizer
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    own_fields = property(_swigfaiss.IndexSplitVectors_own_fields_get, _swigfaiss.IndexSplitVectors_own_fields_set)
+    threaded = property(_swigfaiss.IndexSplitVectors_threaded_get, _swigfaiss.IndexSplitVectors_threaded_set)
+    sub_indexes = property(_swigfaiss.IndexSplitVectors_sub_indexes_get, _swigfaiss.IndexSplitVectors_sub_indexes_set)
+    sum_d = property(_swigfaiss.IndexSplitVectors_sum_d_get, _swigfaiss.IndexSplitVectors_sum_d_set)
+
+    def __init__(self, d, threaded=False):
+        r""" sum of dimensions seen so far"""
+        _swigfaiss.IndexSplitVectors_swiginit(self, _swigfaiss.new_IndexSplitVectors(d, threaded))
+
+    def add_sub_index(self, arg2):
+        return _swigfaiss.IndexSplitVectors_add_sub_index(self, arg2)
+
+    def sync_with_sub_indexes(self):
+        return _swigfaiss.IndexSplitVectors_sync_with_sub_indexes(self)
+
+    def add(self, n, x):
+        return _swigfaiss.IndexSplitVectors_add(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexSplitVectors_search(self, n, x, k, distances, labels)
+
+    def train(self, n, x):
+        return _swigfaiss.IndexSplitVectors_train(self, n, x)
+
+    def reset(self):
+        return _swigfaiss.IndexSplitVectors_reset(self)
+    __swig_destroy__ = _swigfaiss.delete_IndexSplitVectors
+
+# Register IndexSplitVectors in _swigfaiss:
+_swigfaiss.IndexSplitVectors_swigregister(IndexSplitVectors)
+
+class IndexIDMap(Index):
+    r""" Index that translates search results to ids"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    index = property(_swigfaiss.IndexIDMap_index_get, _swigfaiss.IndexIDMap_index_set)
+    own_fields = property(_swigfaiss.IndexIDMap_own_fields_get, _swigfaiss.IndexIDMap_own_fields_set, doc=r"""the sub-index""")
+    id_map = property(_swigfaiss.IndexIDMap_id_map_get, _swigfaiss.IndexIDMap_id_map_set, doc=r"""whether pointers are deleted in destructo""")
+
+    def add_with_ids(self, n, x, xids):
+        r"""
+        :type xids: int
+        :param xids: if non-null, ids to store for the vectors (size n)
+        """
+        return _swigfaiss.IndexIDMap_add_with_ids(self, n, x, xids)
+
+    def add(self, n, x):
+        r""" this will fail. Use add_with_ids"""
+        return _swigfaiss.IndexIDMap_add(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexIDMap_search(self, n, x, k, distances, labels)
+
+    def train(self, n, x):
+        return _swigfaiss.IndexIDMap_train(self, n, x)
+
+    def reset(self):
+        return _swigfaiss.IndexIDMap_reset(self)
+
+    def remove_ids(self, sel):
+        r""" remove ids adapted to IndexFlat"""
+        return _swigfaiss.IndexIDMap_remove_ids(self, sel)
+
+    def range_search(self, n, x, radius, result):
+        return _swigfaiss.IndexIDMap_range_search(self, n, x, radius, result)
+    __swig_destroy__ = _swigfaiss.delete_IndexIDMap
+
+    def __init__(self, *args):
+        _swigfaiss.IndexIDMap_swiginit(self, _swigfaiss.new_IndexIDMap(*args))
+
+# Register IndexIDMap in _swigfaiss:
+_swigfaiss.IndexIDMap_swigregister(IndexIDMap)
+
+class IndexBinaryIDMap(IndexBinary):
+    r""" Index that translates search results to ids"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    index = property(_swigfaiss.IndexBinaryIDMap_index_get, _swigfaiss.IndexBinaryIDMap_index_set)
+    own_fields = property(_swigfaiss.IndexBinaryIDMap_own_fields_get, _swigfaiss.IndexBinaryIDMap_own_fields_set, doc=r"""the sub-index""")
+    id_map = property(_swigfaiss.IndexBinaryIDMap_id_map_get, _swigfaiss.IndexBinaryIDMap_id_map_set, doc=r"""whether pointers are deleted in destructo""")
+
+    def add_with_ids(self, n, x, xids):
+        r"""
+        :type xids: int
+        :param xids: if non-null, ids to store for the vectors (size n)
+        """
+        return _swigfaiss.IndexBinaryIDMap_add_with_ids(self, n, x, xids)
+
+    def add(self, n, x):
+        r""" this will fail. Use add_with_ids"""
+        return _swigfaiss.IndexBinaryIDMap_add(self, n, x)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.IndexBinaryIDMap_search(self, n, x, k, distances, labels)
+
+    def train(self, n, x):
+        return _swigfaiss.IndexBinaryIDMap_train(self, n, x)
+
+    def reset(self):
+        return _swigfaiss.IndexBinaryIDMap_reset(self)
+
+    def remove_ids(self, sel):
+        r""" remove ids adapted to IndexFlat"""
+        return _swigfaiss.IndexBinaryIDMap_remove_ids(self, sel)
+
+    def range_search(self, n, x, radius, result):
+        return _swigfaiss.IndexBinaryIDMap_range_search(self, n, x, radius, result)
+    __swig_destroy__ = _swigfaiss.delete_IndexBinaryIDMap
+
+    def __init__(self, *args):
+        _swigfaiss.IndexBinaryIDMap_swiginit(self, _swigfaiss.new_IndexBinaryIDMap(*args))
+
+# Register IndexBinaryIDMap in _swigfaiss:
+_swigfaiss.IndexBinaryIDMap_swigregister(IndexBinaryIDMap)
+
+class IndexIDMap2(IndexIDMap):
+    r"""
+    same as IndexIDMap but also provides an efficient reconstruction
+    implementation via a 2-way index
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    rev_map = property(_swigfaiss.IndexIDMap2_rev_map_get, _swigfaiss.IndexIDMap2_rev_map_set)
+
+    def construct_rev_map(self):
+        r""" make the rev_map from scratch"""
+        return _swigfaiss.IndexIDMap2_construct_rev_map(self)
+
+    def add_with_ids(self, n, x, xids):
+        return _swigfaiss.IndexIDMap2_add_with_ids(self, n, x, xids)
+
+    def remove_ids(self, sel):
+        return _swigfaiss.IndexIDMap2_remove_ids(self, sel)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.IndexIDMap2_reconstruct(self, key, recons)
+    __swig_destroy__ = _swigfaiss.delete_IndexIDMap2
+
+    def __init__(self, *args):
+        _swigfaiss.IndexIDMap2_swiginit(self, _swigfaiss.new_IndexIDMap2(*args))
+
+# Register IndexIDMap2 in _swigfaiss:
+_swigfaiss.IndexIDMap2_swigregister(IndexIDMap2)
+
+class IndexBinaryIDMap2(IndexBinaryIDMap):
+    r"""
+    same as IndexIDMap but also provides an efficient reconstruction
+    implementation via a 2-way index
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    rev_map = property(_swigfaiss.IndexBinaryIDMap2_rev_map_get, _swigfaiss.IndexBinaryIDMap2_rev_map_set)
+
+    def construct_rev_map(self):
+        r""" make the rev_map from scratch"""
+        return _swigfaiss.IndexBinaryIDMap2_construct_rev_map(self)
+
+    def add_with_ids(self, n, x, xids):
+        return _swigfaiss.IndexBinaryIDMap2_add_with_ids(self, n, x, xids)
+
+    def remove_ids(self, sel):
+        return _swigfaiss.IndexBinaryIDMap2_remove_ids(self, sel)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.IndexBinaryIDMap2_reconstruct(self, key, recons)
+    __swig_destroy__ = _swigfaiss.delete_IndexBinaryIDMap2
+
+    def __init__(self, *args):
+        _swigfaiss.IndexBinaryIDMap2_swiginit(self, _swigfaiss.new_IndexBinaryIDMap2(*args))
+
+# Register IndexBinaryIDMap2 in _swigfaiss:
+_swigfaiss.IndexBinaryIDMap2_swigregister(IndexBinaryIDMap2)
+
+class RangeSearchResult(object):
+    r"""
+    The objective is to have a simple result structure while
+    minimizing the number of mem copies in the result. The method
+    do_allocation can be overloaded to allocate the result tables in
+    the matrix type of a scripting language like Lua or Python.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nq = property(_swigfaiss.RangeSearchResult_nq_get, _swigfaiss.RangeSearchResult_nq_set, doc=r""" nb of queries""")
+    lims = property(_swigfaiss.RangeSearchResult_lims_get, _swigfaiss.RangeSearchResult_lims_set, doc=r""" size (nq + 1)""")
+    labels = property(_swigfaiss.RangeSearchResult_labels_get, _swigfaiss.RangeSearchResult_labels_set, doc=r""" result for query i is labels[lims[i]:lims[i+1]]""")
+    distances = property(_swigfaiss.RangeSearchResult_distances_get, _swigfaiss.RangeSearchResult_distances_set, doc=r""" corresponding distances (not sorted)""")
+    buffer_size = property(_swigfaiss.RangeSearchResult_buffer_size_get, _swigfaiss.RangeSearchResult_buffer_size_set, doc=r""" size of the result buffers used""")
+
+    def __init__(self, nq, alloc_lims=True):
+        r""" lims must be allocated on input to range_search."""
+        _swigfaiss.RangeSearchResult_swiginit(self, _swigfaiss.new_RangeSearchResult(nq, alloc_lims))
+
+    def do_allocation(self):
+        r"""
+        called when lims contains the nb of elements result entries
+        for each query
+        """
+        return _swigfaiss.RangeSearchResult_do_allocation(self)
+    __swig_destroy__ = _swigfaiss.delete_RangeSearchResult
+
+# Register RangeSearchResult in _swigfaiss:
+_swigfaiss.RangeSearchResult_swigregister(RangeSearchResult)
+
+class IDSelector(object):
+    r""" Encapsulates a set of ids to remove."""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+
+    def is_member(self, id):
+        return _swigfaiss.IDSelector_is_member(self, id)
+    __swig_destroy__ = _swigfaiss.delete_IDSelector
+
+# Register IDSelector in _swigfaiss:
+_swigfaiss.IDSelector_swigregister(IDSelector)
+
+class IDSelectorRange(IDSelector):
+    r""" remove ids between [imni, imax)"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    imin = property(_swigfaiss.IDSelectorRange_imin_get, _swigfaiss.IDSelectorRange_imin_set)
+    imax = property(_swigfaiss.IDSelectorRange_imax_get, _swigfaiss.IDSelectorRange_imax_set)
+
+    def __init__(self, imin, imax):
+        _swigfaiss.IDSelectorRange_swiginit(self, _swigfaiss.new_IDSelectorRange(imin, imax))
+
+    def is_member(self, id):
+        return _swigfaiss.IDSelectorRange_is_member(self, id)
+    __swig_destroy__ = _swigfaiss.delete_IDSelectorRange
+
+# Register IDSelectorRange in _swigfaiss:
+_swigfaiss.IDSelectorRange_swigregister(IDSelectorRange)
+
+class IDSelectorArray(IDSelector):
+    r"""
+     simple list of elements to remove
+
+    this is inefficient in most cases, except for IndexIVF with
+    maintain_direct_map
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    n = property(_swigfaiss.IDSelectorArray_n_get, _swigfaiss.IDSelectorArray_n_set)
+    ids = property(_swigfaiss.IDSelectorArray_ids_get, _swigfaiss.IDSelectorArray_ids_set)
+
+    def __init__(self, n, ids):
+        _swigfaiss.IDSelectorArray_swiginit(self, _swigfaiss.new_IDSelectorArray(n, ids))
+
+    def is_member(self, id):
+        return _swigfaiss.IDSelectorArray_is_member(self, id)
+    __swig_destroy__ = _swigfaiss.delete_IDSelectorArray
+
+# Register IDSelectorArray in _swigfaiss:
+_swigfaiss.IDSelectorArray_swigregister(IDSelectorArray)
+
+class IDSelectorBatch(IDSelector):
+    r"""
+     Remove ids from a set. Repetitions of ids in the indices set
+    passed to the constructor does not hurt performance. The hash
+    function used for the bloom filter and GCC's implementation of
+    unordered_set are just the least significant bits of the id. This
+    works fine for random ids or ids in sequences but will produce many
+    hash collisions if lsb's are always the same
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nbits = property(_swigfaiss.IDSelectorBatch_nbits_get, _swigfaiss.IDSelectorBatch_nbits_set)
+    mask = property(_swigfaiss.IDSelectorBatch_mask_get, _swigfaiss.IDSelectorBatch_mask_set)
+
+    def __init__(self, n, indices):
+        _swigfaiss.IDSelectorBatch_swiginit(self, _swigfaiss.new_IDSelectorBatch(n, indices))
+
+    def is_member(self, id):
+        return _swigfaiss.IDSelectorBatch_is_member(self, id)
+    __swig_destroy__ = _swigfaiss.delete_IDSelectorBatch
+
+# Register IDSelectorBatch in _swigfaiss:
+_swigfaiss.IDSelectorBatch_swigregister(IDSelectorBatch)
+
+class BufferList(object):
+    r"""
+    List of temporary buffers used to store results before they are
+    copied to the RangeSearchResult object.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    buffer_size = property(_swigfaiss.BufferList_buffer_size_get, _swigfaiss.BufferList_buffer_size_set)
+    buffers = property(_swigfaiss.BufferList_buffers_get, _swigfaiss.BufferList_buffers_set)
+    wp = property(_swigfaiss.BufferList_wp_get, _swigfaiss.BufferList_wp_set, doc=r""" write pointer in the last buffer.""")
+
+    def __init__(self, buffer_size):
+        _swigfaiss.BufferList_swiginit(self, _swigfaiss.new_BufferList(buffer_size))
+    __swig_destroy__ = _swigfaiss.delete_BufferList
+
+    def append_buffer(self):
+        r""" create a new buffer"""
+        return _swigfaiss.BufferList_append_buffer(self)
+
+    def add(self, id, dis):
+        r""" add one result, possibly appending a new buffer if needed"""
+        return _swigfaiss.BufferList_add(self, id, dis)
+
+    def copy_range(self, ofs, n, dest_ids, dest_dis):
+        r"""
+        copy elemnts ofs:ofs+n-1 seen as linear data in the buffers to
+        tables dest_ids, dest_dis
+        """
+        return _swigfaiss.BufferList_copy_range(self, ofs, n, dest_ids, dest_dis)
+
+# Register BufferList in _swigfaiss:
+_swigfaiss.BufferList_swigregister(BufferList)
+
+class RangeQueryResult(object):
+    r""" result structure for a single query"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    qno = property(_swigfaiss.RangeQueryResult_qno_get, _swigfaiss.RangeQueryResult_qno_set)
+    nres = property(_swigfaiss.RangeQueryResult_nres_get, _swigfaiss.RangeQueryResult_nres_set)
+    pres = property(_swigfaiss.RangeQueryResult_pres_get, _swigfaiss.RangeQueryResult_pres_set)
+
+    def add(self, dis, id):
+        r""" called by search function to report a new result"""
+        return _swigfaiss.RangeQueryResult_add(self, dis, id)
+
+    def __init__(self):
+        _swigfaiss.RangeQueryResult_swiginit(self, _swigfaiss.new_RangeQueryResult())
+    __swig_destroy__ = _swigfaiss.delete_RangeQueryResult
+
+# Register RangeQueryResult in _swigfaiss:
+_swigfaiss.RangeQueryResult_swigregister(RangeQueryResult)
+
+class RangeSearchPartialResult(BufferList):
+    r""" the entries in the buffers are split per query"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    res = property(_swigfaiss.RangeSearchPartialResult_res_get, _swigfaiss.RangeSearchPartialResult_res_set)
+
+    def __init__(self, res_in):
+        r""" eventually the result will be stored in res_in"""
+        _swigfaiss.RangeSearchPartialResult_swiginit(self, _swigfaiss.new_RangeSearchPartialResult(res_in))
+    queries = property(_swigfaiss.RangeSearchPartialResult_queries_get, _swigfaiss.RangeSearchPartialResult_queries_set, doc=r""" query ids + nb of results per query.""")
+
+    def new_result(self, qno):
+        r""" begin a new result"""
+        return _swigfaiss.RangeSearchPartialResult_new_result(self, qno)
+
+    def finalize(self):
+        return _swigfaiss.RangeSearchPartialResult_finalize(self)
+
+    def set_lims(self):
+        r""" called by range_search before do_allocation"""
+        return _swigfaiss.RangeSearchPartialResult_set_lims(self)
+
+    def copy_result(self, incremental=False):
+        r""" called by range_search after do_allocation"""
+        return _swigfaiss.RangeSearchPartialResult_copy_result(self, incremental)
+
+    @staticmethod
+    def merge(partial_results, do_delete=True):
+        r"""
+        merge a set of PartialResult's into one RangeSearchResult
+        on ouptut the partialresults are empty!
+        """
+        return _swigfaiss.RangeSearchPartialResult_merge(partial_results, do_delete)
+    __swig_destroy__ = _swigfaiss.delete_RangeSearchPartialResult
+
+# Register RangeSearchPartialResult in _swigfaiss:
+_swigfaiss.RangeSearchPartialResult_swigregister(RangeSearchPartialResult)
+
+def RangeSearchPartialResult_merge(partial_results, do_delete=True):
+    r"""
+    merge a set of PartialResult's into one RangeSearchResult
+    on ouptut the partialresults are empty!
+    """
+    return _swigfaiss.RangeSearchPartialResult_merge(partial_results, do_delete)
+
+class DistanceComputer(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+
+    def set_query(self, x):
+        r"""
+        called before computing distances. Pointer x should remain valid
+        while operator () is called
+        """
+        return _swigfaiss.DistanceComputer_set_query(self, x)
+
+    def __call__(self, i):
+        r""" compute distance of vector i to current query"""
+        return _swigfaiss.DistanceComputer___call__(self, i)
+
+    def symmetric_dis(self, i, j):
+        r""" compute distance between two stored vectors"""
+        return _swigfaiss.DistanceComputer_symmetric_dis(self, i, j)
+    __swig_destroy__ = _swigfaiss.delete_DistanceComputer
+
+# Register DistanceComputer in _swigfaiss:
+_swigfaiss.DistanceComputer_swigregister(DistanceComputer)
+
+class InterruptCallback(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+
+    def want_interrupt(self):
+        return _swigfaiss.InterruptCallback_want_interrupt(self)
+    __swig_destroy__ = _swigfaiss.delete_InterruptCallback
+
+    @staticmethod
+    def clear_instance():
+        return _swigfaiss.InterruptCallback_clear_instance()
+
+    @staticmethod
+    def check():
+        r"""
+         check if:
+        - an interrupt callback is set
+        - the callback returns true
+        if this is the case, then throw an exception. Should not be called
+        from multiple threads.
+        """
+        return _swigfaiss.InterruptCallback_check()
+
+    @staticmethod
+    def is_interrupted():
+        r"""
+        same as check() but return true if is interrupted instead of
+        throwing. Can be called from multiple threads.
+        """
+        return _swigfaiss.InterruptCallback_is_interrupted()
+
+    @staticmethod
+    def get_period_hint(flops):
+        r"""
+         assuming each iteration takes a certain number of flops, what
+        is a reasonable interval to check for interrupts?
+        """
+        return _swigfaiss.InterruptCallback_get_period_hint(flops)
+
+# Register InterruptCallback in _swigfaiss:
+_swigfaiss.InterruptCallback_swigregister(InterruptCallback)
+
+def InterruptCallback_clear_instance():
+    return _swigfaiss.InterruptCallback_clear_instance()
+
+def InterruptCallback_check():
+    r"""
+     check if:
+    - an interrupt callback is set
+    - the callback returns true
+    if this is the case, then throw an exception. Should not be called
+    from multiple threads.
+    """
+    return _swigfaiss.InterruptCallback_check()
+
+def InterruptCallback_is_interrupted():
+    r"""
+    same as check() but return true if is interrupted instead of
+    throwing. Can be called from multiple threads.
+    """
+    return _swigfaiss.InterruptCallback_is_interrupted()
+
+def InterruptCallback_get_period_hint(flops):
+    r"""
+     assuming each iteration takes a certain number of flops, what
+    is a reasonable interval to check for interrupts?
+    """
+    return _swigfaiss.InterruptCallback_get_period_hint(flops)
+
+class VisitedTable(object):
+    r""" set implementation optimized for fast access."""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    visited = property(_swigfaiss.VisitedTable_visited_get, _swigfaiss.VisitedTable_visited_set)
+    visno = property(_swigfaiss.VisitedTable_visno_get, _swigfaiss.VisitedTable_visno_set)
+
+    def __init__(self, size):
+        _swigfaiss.VisitedTable_swiginit(self, _swigfaiss.new_VisitedTable(size))
+
+    def set(self, no):
+        r""" set flag #no to true"""
+        return _swigfaiss.VisitedTable_set(self, no)
+
+    def get(self, no):
+        r""" get flag #no"""
+        return _swigfaiss.VisitedTable_get(self, no)
+
+    def advance(self):
+        r""" reset all flags to false"""
+        return _swigfaiss.VisitedTable_advance(self)
+    __swig_destroy__ = _swigfaiss.delete_VisitedTable
+
+# Register VisitedTable in _swigfaiss:
+_swigfaiss.VisitedTable_swigregister(VisitedTable)
+
+INDICES_CPU = _swigfaiss.INDICES_CPU
+r"""
+    The user indices are only stored on the CPU; the GPU returns
+    (inverted list, offset) to the CPU which is then translated to
+    the real user index.
+    """
+INDICES_IVF = _swigfaiss.INDICES_IVF
+r"""
+    The indices are not stored at all, on either the CPU or
+    GPU. Only (inverted list, offset) is returned to the user as the
+    index.
+    """
+INDICES_32_BIT = _swigfaiss.INDICES_32_BIT
+r"""
+    Indices are stored as 32 bit integers on the GPU, but returned
+    as 64 bit integers
+    """
+INDICES_64_BIT = _swigfaiss.INDICES_64_BIT
+r""" Indices are stored as 64 bit integers on the GPU"""
+class GpuClonerOptions(object):
+    r""" set some options on how to copy to GPU"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.GpuClonerOptions_swiginit(self, _swigfaiss.new_GpuClonerOptions())
+    indicesOptions = property(_swigfaiss.GpuClonerOptions_indicesOptions_get, _swigfaiss.GpuClonerOptions_indicesOptions_set, doc=r"""
+    how should indices be stored on index types that support indices
+    (anything but GpuIndexFlat*)?
+    """)
+    useFloat16CoarseQuantizer = property(_swigfaiss.GpuClonerOptions_useFloat16CoarseQuantizer_get, _swigfaiss.GpuClonerOptions_useFloat16CoarseQuantizer_set, doc=r""" is the coarse quantizer in float16?""")
+    useFloat16 = property(_swigfaiss.GpuClonerOptions_useFloat16_get, _swigfaiss.GpuClonerOptions_useFloat16_set, doc=r"""
+    for GpuIndexIVFFlat, is storage in float16?
+    for GpuIndexIVFPQ, are intermediate calculations in float16?
+    """)
+    usePrecomputed = property(_swigfaiss.GpuClonerOptions_usePrecomputed_get, _swigfaiss.GpuClonerOptions_usePrecomputed_set, doc=r""" use precomputed tables?""")
+    reserveVecs = property(_swigfaiss.GpuClonerOptions_reserveVecs_get, _swigfaiss.GpuClonerOptions_reserveVecs_set, doc=r""" reserve vectors in the invfiles?""")
+    storeTransposed = property(_swigfaiss.GpuClonerOptions_storeTransposed_get, _swigfaiss.GpuClonerOptions_storeTransposed_set, doc=r""" For GpuIndexFlat, store data in transposed layout?""")
+    verbose = property(_swigfaiss.GpuClonerOptions_verbose_get, _swigfaiss.GpuClonerOptions_verbose_set, doc=r""" Set verbose options on the index""")
+    __swig_destroy__ = _swigfaiss.delete_GpuClonerOptions
+
+# Register GpuClonerOptions in _swigfaiss:
+_swigfaiss.GpuClonerOptions_swigregister(GpuClonerOptions)
+
+class GpuMultipleClonerOptions(GpuClonerOptions):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.GpuMultipleClonerOptions_swiginit(self, _swigfaiss.new_GpuMultipleClonerOptions())
+    shard = property(_swigfaiss.GpuMultipleClonerOptions_shard_get, _swigfaiss.GpuMultipleClonerOptions_shard_set, doc=r"""
+    Whether to shard the index across GPUs, versus replication
+    across GPUs
+    """)
+    shard_type = property(_swigfaiss.GpuMultipleClonerOptions_shard_type_get, _swigfaiss.GpuMultipleClonerOptions_shard_type_set, doc=r""" IndexIVF::copy_subset_to subset type""")
+    __swig_destroy__ = _swigfaiss.delete_GpuMultipleClonerOptions
+
+# Register GpuMultipleClonerOptions in _swigfaiss:
+_swigfaiss.GpuMultipleClonerOptions_swigregister(GpuMultipleClonerOptions)
+
+class GpuIndexConfig(object):
+    r"""
+    Copyright (c) Facebook, Inc. and its affiliates.
+
+    This source code is licensed under the MIT license found in the
+    LICENSE file in the root directory of this source tree.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.GpuIndexConfig_swiginit(self, _swigfaiss.new_GpuIndexConfig())
+    device = property(_swigfaiss.GpuIndexConfig_device_get, _swigfaiss.GpuIndexConfig_device_set, doc=r""" GPU device on which the index is resident""")
+    memorySpace = property(_swigfaiss.GpuIndexConfig_memorySpace_get, _swigfaiss.GpuIndexConfig_memorySpace_set, doc=r"""
+    What memory space to use for primary storage.
+    On Pascal and above (CC 6+) architectures, allows GPUs to use
+    more memory than is available on the GPU.
+    """)
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexConfig
+
+# Register GpuIndexConfig in _swigfaiss:
+_swigfaiss.GpuIndexConfig_swigregister(GpuIndexConfig)
+
+class GpuIndex(Index):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+
+    def getDevice(self):
+        r""" Returns the device that this index is resident on"""
+        return _swigfaiss.GpuIndex_getDevice(self)
+
+    def getResources(self):
+        r"""
+        Returns a reference to our GpuResources object that manages memory,
+        stream and handle resources on the GPU
+        """
+        return _swigfaiss.GpuIndex_getResources(self)
+
+    def setMinPagingSize(self, size):
+        r"""
+        Set the minimum data size for searches (in MiB) for which we use
+        CPU -> GPU paging
+        """
+        return _swigfaiss.GpuIndex_setMinPagingSize(self, size)
+
+    def getMinPagingSize(self):
+        r""" Returns the current minimum data size for paged searches"""
+        return _swigfaiss.GpuIndex_getMinPagingSize(self)
+
+    def add(self, arg2, x):
+        r"""
+        `x` can be resident on the CPU or any GPU; copies are performed
+        as needed
+        Handles paged adds if the add set is too large; calls addInternal_
+        """
+        return _swigfaiss.GpuIndex_add(self, arg2, x)
+
+    def add_with_ids(self, n, x, ids):
+        r"""
+        `x` and `ids` can be resident on the CPU or any GPU; copies are
+        performed as needed
+        Handles paged adds if the add set is too large; calls addInternal_
+        """
+        return _swigfaiss.GpuIndex_add_with_ids(self, n, x, ids)
+
+    def assign(self, n, x, labels, k=1):
+        r"""
+        `x` and `labels` can be resident on the CPU or any GPU; copies are
+        performed as needed
+        """
+        return _swigfaiss.GpuIndex_assign(self, n, x, labels, k)
+
+    def search(self, n, x, k, distances, labels):
+        r"""
+        `x`, `distances` and `labels` can be resident on the CPU or any
+        GPU; copies are performed as needed
+        """
+        return _swigfaiss.GpuIndex_search(self, n, x, k, distances, labels)
+
+    def compute_residual(self, x, residual, key):
+        r"""
+        Overridden to force GPU indices to provide their own GPU-friendly
+        implementation
+        """
+        return _swigfaiss.GpuIndex_compute_residual(self, x, residual, key)
+
+    def compute_residual_n(self, n, xs, residuals, keys):
+        r"""
+        Overridden to force GPU indices to provide their own GPU-friendly
+        implementation
+        """
+        return _swigfaiss.GpuIndex_compute_residual_n(self, n, xs, residuals, keys)
+    __swig_destroy__ = _swigfaiss.delete_GpuIndex
+
+# Register GpuIndex in _swigfaiss:
+_swigfaiss.GpuIndex_swigregister(GpuIndex)
+
+class GpuIndexFlatConfig(GpuIndexConfig):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.GpuIndexFlatConfig_swiginit(self, _swigfaiss.new_GpuIndexFlatConfig())
+    useFloat16 = property(_swigfaiss.GpuIndexFlatConfig_useFloat16_get, _swigfaiss.GpuIndexFlatConfig_useFloat16_set, doc=r""" Whether or not data is stored as float16""")
+    storeTransposed = property(_swigfaiss.GpuIndexFlatConfig_storeTransposed_get, _swigfaiss.GpuIndexFlatConfig_storeTransposed_set, doc=r"""
+    Whether or not data is stored (transparently) in a transposed
+    layout, enabling use of the NN GEMM call, which is ~10% faster.
+    This will improve the speed of the flat index, but will
+    substantially slow down any add() calls made, as all data must
+    be transposed, and will increase storage requirements (we store
+    data in both transposed and non-transposed layouts).
+    """)
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexFlatConfig
+
+# Register GpuIndexFlatConfig in _swigfaiss:
+_swigfaiss.GpuIndexFlatConfig_swigregister(GpuIndexFlatConfig)
+
+class GpuIndexFlat(GpuIndex):
+    r"""
+    Wrapper around the GPU implementation that looks like
+    faiss::IndexFlat; copies over centroid data from a given
+    faiss::IndexFlat
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.GpuIndexFlat_swiginit(self, _swigfaiss.new_GpuIndexFlat(*args))
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexFlat
+
+    def copyFrom(self, index):
+        r"""
+        Initialize ourselves from the given CPU index; will overwrite
+        all data in ourselves
+        """
+        return _swigfaiss.GpuIndexFlat_copyFrom(self, index)
+
+    def copyTo(self, index):
+        r"""
+        Copy ourselves to the given CPU index; will overwrite all data
+        in the index instance
+        """
+        return _swigfaiss.GpuIndexFlat_copyTo(self, index)
+
+    def getNumVecs(self):
+        r""" Returns the number of vectors we contain"""
+        return _swigfaiss.GpuIndexFlat_getNumVecs(self)
+
+    def reset(self):
+        r""" Clears all vectors from this index"""
+        return _swigfaiss.GpuIndexFlat_reset(self)
+
+    def train(self, n, x):
+        r""" This index is not trained, so this does nothing"""
+        return _swigfaiss.GpuIndexFlat_train(self, n, x)
+
+    def add(self, arg2, x):
+        r""" Overrides to avoid excessive copies"""
+        return _swigfaiss.GpuIndexFlat_add(self, arg2, x)
+
+    def reconstruct(self, key, out):
+        r"""
+        Reconstruction methods; prefer the batch reconstruct as it will
+        be more efficient
+        """
+        return _swigfaiss.GpuIndexFlat_reconstruct(self, key, out)
+
+    def reconstruct_n(self, i0, num, out):
+        r""" Batch reconstruction method"""
+        return _swigfaiss.GpuIndexFlat_reconstruct_n(self, i0, num, out)
+
+    def compute_residual(self, x, residual, key):
+        r""" Compute residual"""
+        return _swigfaiss.GpuIndexFlat_compute_residual(self, x, residual, key)
+
+    def compute_residual_n(self, n, xs, residuals, keys):
+        r""" Compute residual (batch mode)"""
+        return _swigfaiss.GpuIndexFlat_compute_residual_n(self, n, xs, residuals, keys)
+
+    def getGpuData(self):
+        r""" For internal access"""
+        return _swigfaiss.GpuIndexFlat_getGpuData(self)
+
+# Register GpuIndexFlat in _swigfaiss:
+_swigfaiss.GpuIndexFlat_swigregister(GpuIndexFlat)
+
+class GpuIndexFlatL2(GpuIndexFlat):
+    r"""
+    Wrapper around the GPU implementation that looks like
+    faiss::IndexFlatL2; copies over centroid data from a given
+    faiss::IndexFlat
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.GpuIndexFlatL2_swiginit(self, _swigfaiss.new_GpuIndexFlatL2(*args))
+
+    def copyFrom(self, index):
+        r"""
+        Initialize ourselves from the given CPU index; will overwrite
+        all data in ourselves
+        """
+        return _swigfaiss.GpuIndexFlatL2_copyFrom(self, index)
+
+    def copyTo(self, index):
+        r"""
+        Copy ourselves to the given CPU index; will overwrite all data
+        in the index instance
+        """
+        return _swigfaiss.GpuIndexFlatL2_copyTo(self, index)
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexFlatL2
+
+# Register GpuIndexFlatL2 in _swigfaiss:
+_swigfaiss.GpuIndexFlatL2_swigregister(GpuIndexFlatL2)
+
+class GpuIndexFlatIP(GpuIndexFlat):
+    r"""
+    Wrapper around the GPU implementation that looks like
+    faiss::IndexFlatIP; copies over centroid data from a given
+    faiss::IndexFlat
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        _swigfaiss.GpuIndexFlatIP_swiginit(self, _swigfaiss.new_GpuIndexFlatIP(*args))
+
+    def copyFrom(self, index):
+        r"""
+        Initialize ourselves from the given CPU index; will overwrite
+        all data in ourselves
+        """
+        return _swigfaiss.GpuIndexFlatIP_copyFrom(self, index)
+
+    def copyTo(self, index):
+        r"""
+        Copy ourselves to the given CPU index; will overwrite all data
+        in the index instance
+        """
+        return _swigfaiss.GpuIndexFlatIP_copyTo(self, index)
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexFlatIP
+
+# Register GpuIndexFlatIP in _swigfaiss:
+_swigfaiss.GpuIndexFlatIP_swigregister(GpuIndexFlatIP)
+
+class GpuIndexIVFConfig(GpuIndexConfig):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.GpuIndexIVFConfig_swiginit(self, _swigfaiss.new_GpuIndexIVFConfig())
+    indicesOptions = property(_swigfaiss.GpuIndexIVFConfig_indicesOptions_get, _swigfaiss.GpuIndexIVFConfig_indicesOptions_set, doc=r""" Index storage options for the GPU""")
+    flatConfig = property(_swigfaiss.GpuIndexIVFConfig_flatConfig_get, _swigfaiss.GpuIndexIVFConfig_flatConfig_set, doc=r""" Configuration for the coarse quantizer object""")
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexIVFConfig
+
+# Register GpuIndexIVFConfig in _swigfaiss:
+_swigfaiss.GpuIndexIVFConfig_swigregister(GpuIndexIVFConfig)
+
+class GpuIndexIVF(GpuIndex):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexIVF
+
+    def copyFrom(self, index):
+        r""" Copy what we need from the CPU equivalent"""
+        return _swigfaiss.GpuIndexIVF_copyFrom(self, index)
+
+    def copyTo(self, index):
+        r""" Copy what we have to the CPU equivalent"""
+        return _swigfaiss.GpuIndexIVF_copyTo(self, index)
+
+    def getNumLists(self):
+        r""" Returns the number of inverted lists we're managing"""
+        return _swigfaiss.GpuIndexIVF_getNumLists(self)
+
+    def getListLength(self, listId):
+        r""" Returns the number of vectors present in a particular inverted list"""
+        return _swigfaiss.GpuIndexIVF_getListLength(self, listId)
+
+    def getListVectorData(self, listId, gpuFormat=False):
+        r"""
+        Return the encoded vector data contained in a particular inverted list,
+        for debugging purposes.
+        If gpuFormat is true, the data is returned as it is encoded in the
+        GPU-side representation.
+        Otherwise, it is converted to the CPU format.
+        compliant format, while the native GPU format may differ.
+        """
+        return _swigfaiss.GpuIndexIVF_getListVectorData(self, listId, gpuFormat)
+
+    def getListIndices(self, listId):
+        r"""
+        Return the vector indices contained in a particular inverted list, for
+        debugging purposes.
+        """
+        return _swigfaiss.GpuIndexIVF_getListIndices(self, listId)
+
+    def getQuantizer(self):
+        r""" Return the quantizer we're using"""
+        return _swigfaiss.GpuIndexIVF_getQuantizer(self)
+
+    def setNumProbes(self, nprobe):
+        r""" Sets the number of list probes per query"""
+        return _swigfaiss.GpuIndexIVF_setNumProbes(self, nprobe)
+
+    def getNumProbes(self):
+        r""" Returns our current number of list probes per query"""
+        return _swigfaiss.GpuIndexIVF_getNumProbes(self)
+    cp = property(_swigfaiss.GpuIndexIVF_cp_get, _swigfaiss.GpuIndexIVF_cp_set, doc=r""" Exposing this like the CPU version for manipulation""")
+    nlist = property(_swigfaiss.GpuIndexIVF_nlist_get, _swigfaiss.GpuIndexIVF_nlist_set, doc=r""" Exposing this like the CPU version for query""")
+    nprobe = property(_swigfaiss.GpuIndexIVF_nprobe_get, _swigfaiss.GpuIndexIVF_nprobe_set, doc=r""" Exposing this like the CPU version for manipulation""")
+    quantizer = property(_swigfaiss.GpuIndexIVF_quantizer_get, _swigfaiss.GpuIndexIVF_quantizer_set, doc=r""" Exposeing this like the CPU version for query""")
+
+# Register GpuIndexIVF in _swigfaiss:
+_swigfaiss.GpuIndexIVF_swigregister(GpuIndexIVF)
+
+class GpuIndexIVFPQConfig(GpuIndexIVFConfig):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.GpuIndexIVFPQConfig_swiginit(self, _swigfaiss.new_GpuIndexIVFPQConfig())
+    useFloat16LookupTables = property(_swigfaiss.GpuIndexIVFPQConfig_useFloat16LookupTables_get, _swigfaiss.GpuIndexIVFPQConfig_useFloat16LookupTables_set, doc=r"""
+    Whether or not float16 residual distance tables are used in the
+    list scanning kernels. When subQuantizers * 2^bitsPerCode >
+    16384, this is required.
+    """)
+    usePrecomputedTables = property(_swigfaiss.GpuIndexIVFPQConfig_usePrecomputedTables_get, _swigfaiss.GpuIndexIVFPQConfig_usePrecomputedTables_set, doc=r"""
+    Whether or not we enable the precomputed table option for
+    search, which can substantially increase the memory requirement.
+    """)
+    interleavedLayout = property(_swigfaiss.GpuIndexIVFPQConfig_interleavedLayout_get, _swigfaiss.GpuIndexIVFPQConfig_interleavedLayout_set, doc=r"""
+    Use the alternative memory layout for the IVF lists
+    WARNING: this is a feature under development, do not use!
+    """)
+    useMMCodeDistance = property(_swigfaiss.GpuIndexIVFPQConfig_useMMCodeDistance_get, _swigfaiss.GpuIndexIVFPQConfig_useMMCodeDistance_set, doc=r"""
+    Use GEMM-backed computation of PQ code distances for the no precomputed
+    table version of IVFPQ.
+    This is for debugging purposes, it should not substantially affect the
+    results one way for another.
+
+    Note that MM code distance is enabled automatically if one uses a number
+    of dimensions per sub-quantizer that is not natively specialized (an odd
+    number like 7 or so).
+    """)
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexIVFPQConfig
+
+# Register GpuIndexIVFPQConfig in _swigfaiss:
+_swigfaiss.GpuIndexIVFPQConfig_swigregister(GpuIndexIVFPQConfig)
+
+class GpuIndexIVFPQ(GpuIndexIVF):
+    r""" IVFPQ index for the GPU"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        r"""
+        *Overload 1:*
+        Construct from a pre-existing faiss::IndexIVFPQ instance, copying
+        data over to the given GPU, if the input index is trained.
+
+        |
+
+        *Overload 2:*
+        Construct an empty index
+
+        |
+
+        *Overload 3:*
+        Construct an empty index
+        """
+        _swigfaiss.GpuIndexIVFPQ_swiginit(self, _swigfaiss.new_GpuIndexIVFPQ(*args))
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexIVFPQ
+
+    def copyFrom(self, index):
+        r"""
+        Reserve space on the GPU for the inverted lists for `num`
+        vectors, assumed equally distributed among
+        Initialize ourselves from the given CPU index; will overwrite
+        all data in ourselves
+        """
+        return _swigfaiss.GpuIndexIVFPQ_copyFrom(self, index)
+
+    def copyTo(self, index):
+        r"""
+        Copy ourselves to the given CPU index; will overwrite all data
+        in the index instance
+        """
+        return _swigfaiss.GpuIndexIVFPQ_copyTo(self, index)
+
+    def reserveMemory(self, numVecs):
+        r""" Reserve GPU memory in our inverted lists for this number of vectors"""
+        return _swigfaiss.GpuIndexIVFPQ_reserveMemory(self, numVecs)
+
+    def setPrecomputedCodes(self, enable):
+        r""" Enable or disable pre-computed codes"""
+        return _swigfaiss.GpuIndexIVFPQ_setPrecomputedCodes(self, enable)
+
+    def getPrecomputedCodes(self):
+        r""" Are pre-computed codes enabled?"""
+        return _swigfaiss.GpuIndexIVFPQ_getPrecomputedCodes(self)
+
+    def getNumSubQuantizers(self):
+        r""" Return the number of sub-quantizers we are using"""
+        return _swigfaiss.GpuIndexIVFPQ_getNumSubQuantizers(self)
+
+    def getBitsPerCode(self):
+        r""" Return the number of bits per PQ code"""
+        return _swigfaiss.GpuIndexIVFPQ_getBitsPerCode(self)
+
+    def getCentroidsPerSubQuantizer(self):
+        r""" Return the number of centroids per PQ code (2^bits per code)"""
+        return _swigfaiss.GpuIndexIVFPQ_getCentroidsPerSubQuantizer(self)
+
+    def reclaimMemory(self):
+        r"""
+        After adding vectors, one can call this to reclaim device memory
+        to exactly the amount needed. Returns space reclaimed in bytes
+        """
+        return _swigfaiss.GpuIndexIVFPQ_reclaimMemory(self)
+
+    def reset(self):
+        r"""
+        Clears out all inverted lists, but retains the coarse and
+        product centroid information
+        """
+        return _swigfaiss.GpuIndexIVFPQ_reset(self)
+
+    def train(self, n, x):
+        r""" Trains the coarse and product quantizer based on the given vector data"""
+        return _swigfaiss.GpuIndexIVFPQ_train(self, n, x)
+
+    def getListLength(self, listId):
+        r""" Returns the number of vectors present in a particular inverted list"""
+        return _swigfaiss.GpuIndexIVFPQ_getListLength(self, listId)
+
+    def getListVectorData(self, listId, gpuFormat=False):
+        r"""
+        Return the encoded vector data contained in a particular inverted list,
+        for debugging purposes.
+        If gpuFormat is true, the data is returned as it is encoded in the
+        GPU-side representation.
+        Otherwise, it is converted to the CPU format.
+        compliant format, while the native GPU format may differ.
+        """
+        return _swigfaiss.GpuIndexIVFPQ_getListVectorData(self, listId, gpuFormat)
+
+    def getListIndices(self, listId):
+        r"""
+        Return the vector indices contained in a particular inverted list, for
+        debugging purposes.
+        """
+        return _swigfaiss.GpuIndexIVFPQ_getListIndices(self, listId)
+    pq = property(_swigfaiss.GpuIndexIVFPQ_pq_get, _swigfaiss.GpuIndexIVFPQ_pq_set, doc=r"""
+    Like the CPU version, we expose a publically-visible ProductQuantizer
+    for manipulation
+    """)
+
+# Register GpuIndexIVFPQ in _swigfaiss:
+_swigfaiss.GpuIndexIVFPQ_swigregister(GpuIndexIVFPQ)
+
+class GpuIndexIVFFlatConfig(GpuIndexIVFConfig):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.GpuIndexIVFFlatConfig_swiginit(self, _swigfaiss.new_GpuIndexIVFFlatConfig())
+    interleavedLayout = property(_swigfaiss.GpuIndexIVFFlatConfig_interleavedLayout_get, _swigfaiss.GpuIndexIVFFlatConfig_interleavedLayout_set, doc=r"""
+    Use the alternative memory layout for the IVF lists
+    (currently the default)
+    """)
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexIVFFlatConfig
+
+# Register GpuIndexIVFFlatConfig in _swigfaiss:
+_swigfaiss.GpuIndexIVFFlatConfig_swigregister(GpuIndexIVFFlatConfig)
+
+class GpuIndexIVFFlat(GpuIndexIVF):
+    r"""
+    Wrapper around the GPU implementation that looks like
+    faiss::IndexIVFFlat
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        r"""
+        *Overload 1:*
+        Construct from a pre-existing faiss::IndexIVFFlat instance, copying
+        data over to the given GPU, if the input index is trained.
+
+        |
+
+        *Overload 2:*
+        Constructs a new instance with an empty flat quantizer; the user
+        provides the number of lists desired.
+
+        |
+
+        *Overload 3:*
+        Constructs a new instance with an empty flat quantizer; the user
+        provides the number of lists desired.
+        """
+        _swigfaiss.GpuIndexIVFFlat_swiginit(self, _swigfaiss.new_GpuIndexIVFFlat(*args))
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexIVFFlat
+
+    def reserveMemory(self, numVecs):
+        r""" Reserve GPU memory in our inverted lists for this number of vectors"""
+        return _swigfaiss.GpuIndexIVFFlat_reserveMemory(self, numVecs)
+
+    def copyFrom(self, index):
+        r"""
+        Initialize ourselves from the given CPU index; will overwrite
+        all data in ourselves
+        """
+        return _swigfaiss.GpuIndexIVFFlat_copyFrom(self, index)
+
+    def copyTo(self, index):
+        r"""
+        Copy ourselves to the given CPU index; will overwrite all data
+        in the index instance
+        """
+        return _swigfaiss.GpuIndexIVFFlat_copyTo(self, index)
+
+    def reclaimMemory(self):
+        r"""
+        After adding vectors, one can call this to reclaim device memory
+        to exactly the amount needed. Returns space reclaimed in bytes
+        """
+        return _swigfaiss.GpuIndexIVFFlat_reclaimMemory(self)
+
+    def reset(self):
+        r"""
+        Clears out all inverted lists, but retains the coarse centroid
+        information
+        """
+        return _swigfaiss.GpuIndexIVFFlat_reset(self)
+
+    def train(self, n, x):
+        r""" Trains the coarse quantizer based on the given vector data"""
+        return _swigfaiss.GpuIndexIVFFlat_train(self, n, x)
+
+    def getListLength(self, listId):
+        r""" Returns the number of vectors present in a particular inverted list"""
+        return _swigfaiss.GpuIndexIVFFlat_getListLength(self, listId)
+
+    def getListVectorData(self, listId, gpuFormat=False):
+        r"""
+        Return the encoded vector data contained in a particular inverted list,
+        for debugging purposes.
+        If gpuFormat is true, the data is returned as it is encoded in the
+        GPU-side representation.
+        Otherwise, it is converted to the CPU format.
+        compliant format, while the native GPU format may differ.
+        """
+        return _swigfaiss.GpuIndexIVFFlat_getListVectorData(self, listId, gpuFormat)
+
+    def getListIndices(self, listId):
+        r"""
+        Return the vector indices contained in a particular inverted list, for
+        debugging purposes.
+        """
+        return _swigfaiss.GpuIndexIVFFlat_getListIndices(self, listId)
+
+# Register GpuIndexIVFFlat in _swigfaiss:
+_swigfaiss.GpuIndexIVFFlat_swigregister(GpuIndexIVFFlat)
+
+class GpuIndexIVFScalarQuantizerConfig(GpuIndexIVFConfig):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.GpuIndexIVFScalarQuantizerConfig_swiginit(self, _swigfaiss.new_GpuIndexIVFScalarQuantizerConfig())
+    interleavedLayout = property(_swigfaiss.GpuIndexIVFScalarQuantizerConfig_interleavedLayout_get, _swigfaiss.GpuIndexIVFScalarQuantizerConfig_interleavedLayout_set, doc=r"""
+    Use the alternative memory layout for the IVF lists
+    (currently the default)
+    """)
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexIVFScalarQuantizerConfig
+
+# Register GpuIndexIVFScalarQuantizerConfig in _swigfaiss:
+_swigfaiss.GpuIndexIVFScalarQuantizerConfig_swigregister(GpuIndexIVFScalarQuantizerConfig)
+
+class GpuIndexIVFScalarQuantizer(GpuIndexIVF):
+    r"""
+    Wrapper around the GPU implementation that looks like
+    faiss::IndexIVFScalarQuantizer
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        r"""
+        *Overload 1:*
+        Construct from a pre-existing faiss::IndexIVFScalarQuantizer instance,
+        copying data over to the given GPU, if the input index is trained.
+
+        |
+
+        *Overload 2:*
+        Constructs a new instance with an empty flat quantizer; the user
+        provides the number of lists desired.
+
+        |
+
+        *Overload 3:*
+        Constructs a new instance with an empty flat quantizer; the user
+        provides the number of lists desired.
+
+        |
+
+        *Overload 4:*
+        Constructs a new instance with an empty flat quantizer; the user
+        provides the number of lists desired.
+
+        |
+
+        *Overload 5:*
+        Constructs a new instance with an empty flat quantizer; the user
+        provides the number of lists desired.
+        """
+        _swigfaiss.GpuIndexIVFScalarQuantizer_swiginit(self, _swigfaiss.new_GpuIndexIVFScalarQuantizer(*args))
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexIVFScalarQuantizer
+
+    def reserveMemory(self, numVecs):
+        r""" Reserve GPU memory in our inverted lists for this number of vectors"""
+        return _swigfaiss.GpuIndexIVFScalarQuantizer_reserveMemory(self, numVecs)
+
+    def copyFrom(self, index):
+        r"""
+        Initialize ourselves from the given CPU index; will overwrite
+        all data in ourselves
+        """
+        return _swigfaiss.GpuIndexIVFScalarQuantizer_copyFrom(self, index)
+
+    def copyTo(self, index):
+        r"""
+        Copy ourselves to the given CPU index; will overwrite all data
+        in the index instance
+        """
+        return _swigfaiss.GpuIndexIVFScalarQuantizer_copyTo(self, index)
+
+    def reclaimMemory(self):
+        r"""
+        After adding vectors, one can call this to reclaim device memory
+        to exactly the amount needed. Returns space reclaimed in bytes
+        """
+        return _swigfaiss.GpuIndexIVFScalarQuantizer_reclaimMemory(self)
+
+    def reset(self):
+        r"""
+        Clears out all inverted lists, but retains the coarse and scalar
+        quantizer information
+        """
+        return _swigfaiss.GpuIndexIVFScalarQuantizer_reset(self)
+
+    def train(self, n, x):
+        r""" Trains the coarse and scalar quantizer based on the given vector data"""
+        return _swigfaiss.GpuIndexIVFScalarQuantizer_train(self, n, x)
+
+    def getListLength(self, listId):
+        r""" Returns the number of vectors present in a particular inverted list"""
+        return _swigfaiss.GpuIndexIVFScalarQuantizer_getListLength(self, listId)
+
+    def getListVectorData(self, listId, gpuFormat=False):
+        r"""
+        Return the encoded vector data contained in a particular inverted list,
+        for debugging purposes.
+        If gpuFormat is true, the data is returned as it is encoded in the
+        GPU-side representation.
+        Otherwise, it is converted to the CPU format.
+        compliant format, while the native GPU format may differ.
+        """
+        return _swigfaiss.GpuIndexIVFScalarQuantizer_getListVectorData(self, listId, gpuFormat)
+
+    def getListIndices(self, listId):
+        r"""
+        Return the vector indices contained in a particular inverted list, for
+        debugging purposes.
+        """
+        return _swigfaiss.GpuIndexIVFScalarQuantizer_getListIndices(self, listId)
+    sq = property(_swigfaiss.GpuIndexIVFScalarQuantizer_sq_get, _swigfaiss.GpuIndexIVFScalarQuantizer_sq_set, doc=r""" Exposed like the CPU version""")
+    by_residual = property(_swigfaiss.GpuIndexIVFScalarQuantizer_by_residual_get, _swigfaiss.GpuIndexIVFScalarQuantizer_by_residual_set, doc=r""" Exposed like the CPU version""")
+
+# Register GpuIndexIVFScalarQuantizer in _swigfaiss:
+_swigfaiss.GpuIndexIVFScalarQuantizer_swigregister(GpuIndexIVFScalarQuantizer)
+
+class GpuIndexBinaryFlatConfig(GpuIndexConfig):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.GpuIndexBinaryFlatConfig_swiginit(self, _swigfaiss.new_GpuIndexBinaryFlatConfig())
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexBinaryFlatConfig
+
+# Register GpuIndexBinaryFlatConfig in _swigfaiss:
+_swigfaiss.GpuIndexBinaryFlatConfig_swigregister(GpuIndexBinaryFlatConfig)
+
+class GpuIndexBinaryFlat(IndexBinary):
+    r"""
+    A GPU version of IndexBinaryFlat for brute-force comparison of bit vectors
+    via Hamming distance
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, *args):
+        r"""
+        *Overload 1:*
+        Construct from a pre-existing faiss::IndexBinaryFlat instance, copying
+        data over to the given GPU
+
+        |
+
+        *Overload 2:*
+        Construct an empty instance that can be added to
+
+        |
+
+        *Overload 3:*
+        Construct an empty instance that can be added to
+        """
+        _swigfaiss.GpuIndexBinaryFlat_swiginit(self, _swigfaiss.new_GpuIndexBinaryFlat(*args))
+    __swig_destroy__ = _swigfaiss.delete_GpuIndexBinaryFlat
+
+    def getDevice(self):
+        r""" Returns the device that this index is resident on"""
+        return _swigfaiss.GpuIndexBinaryFlat_getDevice(self)
+
+    def getResources(self):
+        r"""
+        Returns a reference to our GpuResources object that manages memory,
+        stream and handle resources on the GPU
+        """
+        return _swigfaiss.GpuIndexBinaryFlat_getResources(self)
+
+    def copyFrom(self, index):
+        r"""
+        Initialize ourselves from the given CPU index; will overwrite
+        all data in ourselves
+        """
+        return _swigfaiss.GpuIndexBinaryFlat_copyFrom(self, index)
+
+    def copyTo(self, index):
+        r"""
+        Copy ourselves to the given CPU index; will overwrite all data
+        in the index instance
+        """
+        return _swigfaiss.GpuIndexBinaryFlat_copyTo(self, index)
+
+    def add(self, n, x):
+        return _swigfaiss.GpuIndexBinaryFlat_add(self, n, x)
+
+    def reset(self):
+        return _swigfaiss.GpuIndexBinaryFlat_reset(self)
+
+    def search(self, n, x, k, distances, labels):
+        return _swigfaiss.GpuIndexBinaryFlat_search(self, n, x, k, distances, labels)
+
+    def reconstruct(self, key, recons):
+        return _swigfaiss.GpuIndexBinaryFlat_reconstruct(self, key, recons)
+
+# Register GpuIndexBinaryFlat in _swigfaiss:
+_swigfaiss.GpuIndexBinaryFlat_swigregister(GpuIndexBinaryFlat)
+
+DistanceDataType_F32 = _swigfaiss.DistanceDataType_F32
+DistanceDataType_F16 = _swigfaiss.DistanceDataType_F16
+IndicesDataType_I64 = _swigfaiss.IndicesDataType_I64
+IndicesDataType_I32 = _swigfaiss.IndicesDataType_I32
+class GpuDistanceParams(object):
+    r""" Arguments to brute-force GPU k-nearest neighbor searching"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self):
+        _swigfaiss.GpuDistanceParams_swiginit(self, _swigfaiss.new_GpuDistanceParams())
+    metric = property(_swigfaiss.GpuDistanceParams_metric_get, _swigfaiss.GpuDistanceParams_metric_set, doc=r""" Search parameter: distance metric""")
+    metricArg = property(_swigfaiss.GpuDistanceParams_metricArg_get, _swigfaiss.GpuDistanceParams_metricArg_set, doc=r"""
+    Search parameter: distance metric argument (if applicable)
+    For metric == METRIC_Lp, this is the p-value
+    """)
+    k = property(_swigfaiss.GpuDistanceParams_k_get, _swigfaiss.GpuDistanceParams_k_set, doc=r"""
+    Search parameter: return k nearest neighbors
+    If the value provided is -1, then we report all pairwise distances
+    without top-k filtering
+    """)
+    dims = property(_swigfaiss.GpuDistanceParams_dims_get, _swigfaiss.GpuDistanceParams_dims_set, doc=r""" Vector dimensionality""")
+    vectors = property(_swigfaiss.GpuDistanceParams_vectors_get, _swigfaiss.GpuDistanceParams_vectors_set, doc=r"""
+    If vectorsRowMajor is true, this is
+    numVectors x dims, with dims innermost; otherwise,
+    dims x numVectors, with numVectors innermost
+    """)
+    vectorType = property(_swigfaiss.GpuDistanceParams_vectorType_get, _swigfaiss.GpuDistanceParams_vectorType_set)
+    vectorsRowMajor = property(_swigfaiss.GpuDistanceParams_vectorsRowMajor_get, _swigfaiss.GpuDistanceParams_vectorsRowMajor_set)
+    numVectors = property(_swigfaiss.GpuDistanceParams_numVectors_get, _swigfaiss.GpuDistanceParams_numVectors_set)
+    vectorNorms = property(_swigfaiss.GpuDistanceParams_vectorNorms_get, _swigfaiss.GpuDistanceParams_vectorNorms_set, doc=r"""
+    Precomputed L2 norms for each vector in `vectors`, which can be
+    optionally provided in advance to speed computation for METRIC_L2
+    """)
+    queries = property(_swigfaiss.GpuDistanceParams_queries_get, _swigfaiss.GpuDistanceParams_queries_set, doc=r"""
+    If queriesRowMajor is true, this is
+    numQueries x dims, with dims innermost; otherwise,
+    dims x numQueries, with numQueries innermost
+    """)
+    queryType = property(_swigfaiss.GpuDistanceParams_queryType_get, _swigfaiss.GpuDistanceParams_queryType_set)
+    queriesRowMajor = property(_swigfaiss.GpuDistanceParams_queriesRowMajor_get, _swigfaiss.GpuDistanceParams_queriesRowMajor_set)
+    numQueries = property(_swigfaiss.GpuDistanceParams_numQueries_get, _swigfaiss.GpuDistanceParams_numQueries_set)
+    outDistances = property(_swigfaiss.GpuDistanceParams_outDistances_get, _swigfaiss.GpuDistanceParams_outDistances_set, doc=r"""
+    A region of memory size numQueries x k, with k
+    innermost (row major) if k > 0, or if k == -1, a region of memory of
+    size numQueries x numVectors
+    """)
+    ignoreOutDistances = property(_swigfaiss.GpuDistanceParams_ignoreOutDistances_get, _swigfaiss.GpuDistanceParams_ignoreOutDistances_set, doc=r"""
+    Do we only care about the indices reported, rather than the output
+    distances? Not used if k == -1 (all pairwise distances)
+    """)
+    outIndicesType = property(_swigfaiss.GpuDistanceParams_outIndicesType_get, _swigfaiss.GpuDistanceParams_outIndicesType_set, doc=r"""
+    A region of memory size numQueries x k, with k
+    innermost (row major). Not used if k == -1 (all pairwise distances)
+    """)
+    outIndices = property(_swigfaiss.GpuDistanceParams_outIndices_get, _swigfaiss.GpuDistanceParams_outIndices_set)
+    __swig_destroy__ = _swigfaiss.delete_GpuDistanceParams
+
+# Register GpuDistanceParams in _swigfaiss:
+_swigfaiss.GpuDistanceParams_swigregister(GpuDistanceParams)
+
+
+def bfKnn(resources, args):
+    r"""
+    A wrapper for gpu/impl/Distance.cuh to expose direct brute-force k-nearest
+    neighbor searches on an externally-provided region of memory (e.g., from a
+    pytorch tensor).
+    The data (vectors, queries, outDistances, outIndices) can be resident on the
+    GPU or the CPU, but all calculations are performed on the GPU. If the result
+    buffers are on the CPU, results will be copied back when done.
+
+    All GPU computation is performed on the current CUDA device, and ordered
+    with respect to resources->getDefaultStreamCurrentDevice().
+
+    For each vector in `queries`, searches all of `vectors` to find its k
+    nearest neighbors with respect to the given metric
+    """
+    return _swigfaiss.bfKnn(resources, args)
+
+def bruteForceKnn(resources, metric, vectors, vectorsRowMajor, numVectors, queries, queriesRowMajor, numQueries, dims, k, outDistances, outIndices):
+    r""" Deprecated legacy implementation"""
+    return _swigfaiss.bruteForceKnn(resources, metric, vectors, vectorsRowMajor, numVectors, queries, queriesRowMajor, numQueries, dims, k, outDistances, outIndices)
+class GpuIcmEncoder(IcmEncoder):
+    r"""
+     Perform LSQ encoding on GPU.
+
+    Split input vectors to different devices and call IcmEncoderImpl::encode
+    to encode them
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, lsq, provs, devices):
+        _swigfaiss.GpuIcmEncoder_swiginit(self, _swigfaiss.new_GpuIcmEncoder(lsq, provs, devices))
+    __swig_destroy__ = _swigfaiss.delete_GpuIcmEncoder
+
+    def set_binary_term(self):
+        return _swigfaiss.GpuIcmEncoder_set_binary_term(self)
+
+    def encode(self, codes, x, gen, n, ils_iters):
+        return _swigfaiss.GpuIcmEncoder_encode(self, codes, x, gen, n, ils_iters)
+
+# Register GpuIcmEncoder in _swigfaiss:
+_swigfaiss.GpuIcmEncoder_swigregister(GpuIcmEncoder)
+
+class GpuIcmEncoderFactory(IcmEncoderFactory):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, ngpus=1):
+        _swigfaiss.GpuIcmEncoderFactory_swiginit(self, _swigfaiss.new_GpuIcmEncoderFactory(ngpus))
+
+    def get(self, lsq):
+        return _swigfaiss.GpuIcmEncoderFactory_get(self, lsq)
+    provs = property(_swigfaiss.GpuIcmEncoderFactory_provs_get, _swigfaiss.GpuIcmEncoderFactory_provs_set)
+    devices = property(_swigfaiss.GpuIcmEncoderFactory_devices_get, _swigfaiss.GpuIcmEncoderFactory_devices_set)
+    __swig_destroy__ = _swigfaiss.delete_GpuIcmEncoderFactory
+
+# Register GpuIcmEncoderFactory in _swigfaiss:
+_swigfaiss.GpuIcmEncoderFactory_swigregister(GpuIcmEncoderFactory)
+
+
+def downcast_index(index):
+    return _swigfaiss.downcast_index(index)
+
+def downcast_VectorTransform(vt):
+    return _swigfaiss.downcast_VectorTransform(vt)
+
+def downcast_IndexBinary(index):
+    return _swigfaiss.downcast_IndexBinary(index)
+
+def downcast_InvertedLists(il):
+    return _swigfaiss.downcast_InvertedLists(il)
+
+def write_index(*args):
+    return _swigfaiss.write_index(*args)
+
+def write_index_binary(*args):
+    return _swigfaiss.write_index_binary(*args)
+
+def read_index(*args):
+    return _swigfaiss.read_index(*args)
+
+def read_index_binary(*args):
+    return _swigfaiss.read_index_binary(*args)
+
+def write_VectorTransform(vt, fname):
+    return _swigfaiss.write_VectorTransform(vt, fname)
+
+def read_VectorTransform(fname):
+    return _swigfaiss.read_VectorTransform(fname)
+
+def read_ProductQuantizer(*args):
+    return _swigfaiss.read_ProductQuantizer(*args)
+
+def write_ProductQuantizer(*args):
+    return _swigfaiss.write_ProductQuantizer(*args)
+
+def write_InvertedLists(ils, f):
+    return _swigfaiss.write_InvertedLists(ils, f)
+
+def read_InvertedLists(reader, io_flags=0):
+    return _swigfaiss.read_InvertedLists(reader, io_flags)
+
+def clone_index(arg1):
+    return _swigfaiss.clone_index(arg1)
+class Cloner(object):
+    r"""
+     Cloner class, useful to override classes with other cloning
+    functions. The cloning function above just calls
+    Cloner::clone_Index.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def clone_VectorTransform(self, arg2):
+        return _swigfaiss.Cloner_clone_VectorTransform(self, arg2)
+
+    def clone_Index(self, arg2):
+        return _swigfaiss.Cloner_clone_Index(self, arg2)
+
+    def clone_IndexIVF(self, arg2):
+        return _swigfaiss.Cloner_clone_IndexIVF(self, arg2)
+    __swig_destroy__ = _swigfaiss.delete_Cloner
+
+    def __init__(self):
+        _swigfaiss.Cloner_swiginit(self, _swigfaiss.new_Cloner())
+
+# Register Cloner in _swigfaiss:
+_swigfaiss.Cloner_swigregister(Cloner)
+IO_FLAG_READ_ONLY = cvar.IO_FLAG_READ_ONLY
+IO_FLAG_ONDISK_SAME_DIR = cvar.IO_FLAG_ONDISK_SAME_DIR
+IO_FLAG_SKIP_IVF_DATA = cvar.IO_FLAG_SKIP_IVF_DATA
+IO_FLAG_MMAP = cvar.IO_FLAG_MMAP
+
+class AutoTuneCriterion(object):
+    r"""
+    Evaluation criterion. Returns a performance measure in [0,1],
+    higher is better.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+
+    def __init__(self, *args, **kwargs):
+        raise AttributeError("No constructor defined - class is abstract")
+    __repr__ = _swig_repr
+    nq = property(_swigfaiss.AutoTuneCriterion_nq_get, _swigfaiss.AutoTuneCriterion_nq_set, doc=r""" nb of queries this criterion is evaluated on""")
+    nnn = property(_swigfaiss.AutoTuneCriterion_nnn_get, _swigfaiss.AutoTuneCriterion_nnn_set, doc=r""" nb of NNs that the query should request""")
+    gt_nnn = property(_swigfaiss.AutoTuneCriterion_gt_nnn_get, _swigfaiss.AutoTuneCriterion_gt_nnn_set, doc=r""" nb of GT NNs required to evaluate criterion""")
+    gt_D = property(_swigfaiss.AutoTuneCriterion_gt_D_get, _swigfaiss.AutoTuneCriterion_gt_D_set, doc=r""" Ground-truth distances (size nq * gt_nnn)""")
+    gt_I = property(_swigfaiss.AutoTuneCriterion_gt_I_get, _swigfaiss.AutoTuneCriterion_gt_I_set, doc=r""" Ground-truth indexes (size nq * gt_nnn)""")
+
+    def set_groundtruth(self, gt_nnn, gt_D_in, gt_I_in):
+        r"""
+         Intitializes the gt_D and gt_I vectors. Must be called before evaluating
+
+        :type gt_D_in: float
+        :param gt_D_in:  size nq * gt_nnn
+        :type gt_I_in: int
+        :param gt_I_in:  size nq * gt_nnn
+        """
+        return _swigfaiss.AutoTuneCriterion_set_groundtruth(self, gt_nnn, gt_D_in, gt_I_in)
+
+    def evaluate(self, D, I):
+        r"""
+         Evaluate the criterion.
+
+        :type D: float
+        :param D:  size nq * nnn
+        :type I: int
+        :param I:  size nq * nnn
+        :rtype: float
+        :return: the criterion, between 0 and 1. Larger is better.
+        """
+        return _swigfaiss.AutoTuneCriterion_evaluate(self, D, I)
+    __swig_destroy__ = _swigfaiss.delete_AutoTuneCriterion
+
+# Register AutoTuneCriterion in _swigfaiss:
+_swigfaiss.AutoTuneCriterion_swigregister(AutoTuneCriterion)
+
+class OneRecallAtRCriterion(AutoTuneCriterion):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    R = property(_swigfaiss.OneRecallAtRCriterion_R_get, _swigfaiss.OneRecallAtRCriterion_R_set)
+
+    def __init__(self, nq, R):
+        _swigfaiss.OneRecallAtRCriterion_swiginit(self, _swigfaiss.new_OneRecallAtRCriterion(nq, R))
+
+    def evaluate(self, D, I):
+        return _swigfaiss.OneRecallAtRCriterion_evaluate(self, D, I)
+    __swig_destroy__ = _swigfaiss.delete_OneRecallAtRCriterion
+
+# Register OneRecallAtRCriterion in _swigfaiss:
+_swigfaiss.OneRecallAtRCriterion_swigregister(OneRecallAtRCriterion)
+
+class IntersectionCriterion(AutoTuneCriterion):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    R = property(_swigfaiss.IntersectionCriterion_R_get, _swigfaiss.IntersectionCriterion_R_set)
+
+    def __init__(self, nq, R):
+        _swigfaiss.IntersectionCriterion_swiginit(self, _swigfaiss.new_IntersectionCriterion(nq, R))
+
+    def evaluate(self, D, I):
+        return _swigfaiss.IntersectionCriterion_evaluate(self, D, I)
+    __swig_destroy__ = _swigfaiss.delete_IntersectionCriterion
+
+# Register IntersectionCriterion in _swigfaiss:
+_swigfaiss.IntersectionCriterion_swigregister(IntersectionCriterion)
+
+class OperatingPoint(object):
+    r"""
+    Maintains a list of experimental results. Each operating point is a
+    (perf, t, key) triplet, where higher perf and lower t is
+    better. The key field is an arbitrary identifier for the operating point.
+
+    Includes primitives to extract the Pareto-optimal operating points in the
+    (perf, t) space.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    perf = property(_swigfaiss.OperatingPoint_perf_get, _swigfaiss.OperatingPoint_perf_set, doc=r""" performance measure (output of a Criterion)""")
+    t = property(_swigfaiss.OperatingPoint_t_get, _swigfaiss.OperatingPoint_t_set, doc=r""" corresponding execution time (ms)""")
+    key = property(_swigfaiss.OperatingPoint_key_get, _swigfaiss.OperatingPoint_key_set, doc=r""" key that identifies this op pt""")
+    cno = property(_swigfaiss.OperatingPoint_cno_get, _swigfaiss.OperatingPoint_cno_set, doc=r""" integer identifer""")
+
+    def __init__(self):
+        _swigfaiss.OperatingPoint_swiginit(self, _swigfaiss.new_OperatingPoint())
+    __swig_destroy__ = _swigfaiss.delete_OperatingPoint
+
+# Register OperatingPoint in _swigfaiss:
+_swigfaiss.OperatingPoint_swigregister(OperatingPoint)
+
+class OperatingPoints(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    all_pts = property(_swigfaiss.OperatingPoints_all_pts_get, _swigfaiss.OperatingPoints_all_pts_set, doc=r""" all operating points""")
+    optimal_pts = property(_swigfaiss.OperatingPoints_optimal_pts_get, _swigfaiss.OperatingPoints_optimal_pts_set, doc=r""" optimal operating points, sorted by perf""")
+
+    def __init__(self):
+        _swigfaiss.OperatingPoints_swiginit(self, _swigfaiss.new_OperatingPoints())
+
+    def merge_with(self, *args):
+        r""" add operating points from other to this, with a prefix to the keys"""
+        return _swigfaiss.OperatingPoints_merge_with(self, *args)
+
+    def clear(self):
+        return _swigfaiss.OperatingPoints_clear(self)
+
+    def add(self, perf, t, key, cno=0):
+        r""" add a performance measure. Return whether it is an optimal point"""
+        return _swigfaiss.OperatingPoints_add(self, perf, t, key, cno)
+
+    def t_for_perf(self, perf):
+        r""" get time required to obtain a given performance measure"""
+        return _swigfaiss.OperatingPoints_t_for_perf(self, perf)
+
+    def display(self, only_optimal=True):
+        r""" easy-to-read output"""
+        return _swigfaiss.OperatingPoints_display(self, only_optimal)
+
+    def all_to_gnuplot(self, fname):
+        r""" output to a format easy to digest by gnuplot"""
+        return _swigfaiss.OperatingPoints_all_to_gnuplot(self, fname)
+
+    def optimal_to_gnuplot(self, fname):
+        return _swigfaiss.OperatingPoints_optimal_to_gnuplot(self, fname)
+    __swig_destroy__ = _swigfaiss.delete_OperatingPoints
+
+# Register OperatingPoints in _swigfaiss:
+_swigfaiss.OperatingPoints_swigregister(OperatingPoints)
+
+class ParameterRange(object):
+    r""" possible values of a parameter, sorted from least to most expensive/accurate"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    name = property(_swigfaiss.ParameterRange_name_get, _swigfaiss.ParameterRange_name_set)
+    values = property(_swigfaiss.ParameterRange_values_get, _swigfaiss.ParameterRange_values_set)
+
+    def __init__(self):
+        _swigfaiss.ParameterRange_swiginit(self, _swigfaiss.new_ParameterRange())
+    __swig_destroy__ = _swigfaiss.delete_ParameterRange
+
+# Register ParameterRange in _swigfaiss:
+_swigfaiss.ParameterRange_swigregister(ParameterRange)
+
+class ParameterSpace(object):
+    r""" Uses a-priori knowledge on the Faiss indexes to extract tunable parameters."""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    parameter_ranges = property(_swigfaiss.ParameterSpace_parameter_ranges_get, _swigfaiss.ParameterSpace_parameter_ranges_set, doc=r""" all tunable parameters""")
+    verbose = property(_swigfaiss.ParameterSpace_verbose_get, _swigfaiss.ParameterSpace_verbose_set, doc=r""" verbosity during exploration""")
+    n_experiments = property(_swigfaiss.ParameterSpace_n_experiments_get, _swigfaiss.ParameterSpace_n_experiments_set, doc=r""" nb of experiments during optimization (0 = try all combinations)""")
+    batchsize = property(_swigfaiss.ParameterSpace_batchsize_get, _swigfaiss.ParameterSpace_batchsize_set, doc=r""" maximum number of queries to submit at a time.""")
+    thread_over_batches = property(_swigfaiss.ParameterSpace_thread_over_batches_get, _swigfaiss.ParameterSpace_thread_over_batches_set, doc=r"""
+    use multithreading over batches (useful to benchmark
+    independent single-searches)
+    """)
+    min_test_duration = property(_swigfaiss.ParameterSpace_min_test_duration_get, _swigfaiss.ParameterSpace_min_test_duration_set, doc=r"""
+    run tests several times until they reach at least this
+    duration (to avoid jittering in MT mode)
+    """)
+
+    def __init__(self):
+        _swigfaiss.ParameterSpace_swiginit(self, _swigfaiss.new_ParameterSpace())
+
+    def n_combinations(self):
+        r""" nb of combinations, = product of values sizes"""
+        return _swigfaiss.ParameterSpace_n_combinations(self)
+
+    def combination_ge(self, c1, c2):
+        r""" returns whether combinations c1 >= c2 in the tuple sense"""
+        return _swigfaiss.ParameterSpace_combination_ge(self, c1, c2)
+
+    def combination_name(self, cno):
+        r""" get string representation of the combination"""
+        return _swigfaiss.ParameterSpace_combination_name(self, cno)
+
+    def display(self):
+        r""" print a description on stdout"""
+        return _swigfaiss.ParameterSpace_display(self)
+
+    def add_range(self, name):
+        r""" add a new parameter (or return it if it exists)"""
+        return _swigfaiss.ParameterSpace_add_range(self, name)
+
+    def initialize(self, index):
+        r""" initialize with reasonable parameters for the index"""
+        return _swigfaiss.ParameterSpace_initialize(self, index)
+
+    def set_index_parameters(self, *args):
+        r"""
+        *Overload 1:*
+        set a combination of parameters on an index
+
+        |
+
+        *Overload 2:*
+        set a combination of parameters described by a string
+        """
+        return _swigfaiss.ParameterSpace_set_index_parameters(self, *args)
+
+    def set_index_parameter(self, index, name, val):
+        r""" set one of the parameters, returns whether setting was successful"""
+        return _swigfaiss.ParameterSpace_set_index_parameter(self, index, name, val)
+
+    def update_bounds(self, cno, op, upper_bound_perf, lower_bound_t):
+        r"""
+         find an upper bound on the performance and a lower bound on t
+        for configuration cno given another operating point op
+        """
+        return _swigfaiss.ParameterSpace_update_bounds(self, cno, op, upper_bound_perf, lower_bound_t)
+
+    def explore(self, index, nq, xq, crit, ops):
+        r"""
+         explore operating points
+        :type index: :py:class:`Index`
+        :param index:   index to run on
+        :type xq: float
+        :param xq:      query vectors (size nq * index.d)
+        :type crit: :py:class:`AutoTuneCriterion`
+        :param crit:    selection criterion
+        :type ops: :py:class:`OperatingPoints`
+        :param ops:     resulting operating points
+        """
+        return _swigfaiss.ParameterSpace_explore(self, index, nq, xq, crit, ops)
+    __swig_destroy__ = _swigfaiss.delete_ParameterSpace
+
+# Register ParameterSpace in _swigfaiss:
+_swigfaiss.ParameterSpace_swigregister(ParameterSpace)
+
+
+def index_factory(*args):
+    r"""
+    Build and index with the sequence of processing steps described in
+    the string.
+    """
+    return _swigfaiss.index_factory(*args)
+
+def index_binary_factory(d, description):
+    return _swigfaiss.index_binary_factory(d, description)
+class MatrixStats(object):
+    r"""
+     Reports some statistics on a dataset and comments on them.
+
+    It is a class rather than a function so that all stats can also be
+    accessed from code
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def __init__(self, n, d, x):
+        _swigfaiss.MatrixStats_swiginit(self, _swigfaiss.new_MatrixStats(n, d, x))
+    comments = property(_swigfaiss.MatrixStats_comments_get, _swigfaiss.MatrixStats_comments_set)
+    n = property(_swigfaiss.MatrixStats_n_get, _swigfaiss.MatrixStats_n_set)
+    d = property(_swigfaiss.MatrixStats_d_get, _swigfaiss.MatrixStats_d_set)
+    n_collision = property(_swigfaiss.MatrixStats_n_collision_get, _swigfaiss.MatrixStats_n_collision_set)
+    n_valid = property(_swigfaiss.MatrixStats_n_valid_get, _swigfaiss.MatrixStats_n_valid_set)
+    n0 = property(_swigfaiss.MatrixStats_n0_get, _swigfaiss.MatrixStats_n0_set)
+    min_norm2 = property(_swigfaiss.MatrixStats_min_norm2_get, _swigfaiss.MatrixStats_min_norm2_set)
+    max_norm2 = property(_swigfaiss.MatrixStats_max_norm2_get, _swigfaiss.MatrixStats_max_norm2_set)
+    per_dim_stats = property(_swigfaiss.MatrixStats_per_dim_stats_get, _swigfaiss.MatrixStats_per_dim_stats_set)
+    occurrences = property(_swigfaiss.MatrixStats_occurrences_get, _swigfaiss.MatrixStats_occurrences_set)
+    buf = property(_swigfaiss.MatrixStats_buf_get, _swigfaiss.MatrixStats_buf_set)
+    nbuf = property(_swigfaiss.MatrixStats_nbuf_get, _swigfaiss.MatrixStats_nbuf_set)
+
+    def do_comment(self, fmt):
+        return _swigfaiss.MatrixStats_do_comment(self, fmt)
+    __swig_destroy__ = _swigfaiss.delete_MatrixStats
+
+# Register MatrixStats in _swigfaiss:
+_swigfaiss.MatrixStats_swigregister(MatrixStats)
+
+class GpuParameterSpace(ParameterSpace):
+    r""" parameter space and setters for GPU indexes"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def initialize(self, index):
+        r""" initialize with reasonable parameters for the index"""
+        return _swigfaiss.GpuParameterSpace_initialize(self, index)
+
+    def set_index_parameter(self, index, name, val):
+        r""" set a combination of parameters on an index"""
+        return _swigfaiss.GpuParameterSpace_set_index_parameter(self, index, name, val)
+
+    def __init__(self):
+        _swigfaiss.GpuParameterSpace_swiginit(self, _swigfaiss.new_GpuParameterSpace())
+    __swig_destroy__ = _swigfaiss.delete_GpuParameterSpace
+
+# Register GpuParameterSpace in _swigfaiss:
+_swigfaiss.GpuParameterSpace_swigregister(GpuParameterSpace)
+
+class ToCPUCloner(Cloner):
+    r""" Cloner specialized for GPU -> CPU"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+
+    def merge_index(self, dst, src, successive_ids):
+        return _swigfaiss.ToCPUCloner_merge_index(self, dst, src, successive_ids)
+
+    def clone_Index(self, index):
+        return _swigfaiss.ToCPUCloner_clone_Index(self, index)
+
+    def __init__(self):
+        _swigfaiss.ToCPUCloner_swiginit(self, _swigfaiss.new_ToCPUCloner())
+    __swig_destroy__ = _swigfaiss.delete_ToCPUCloner
+
+# Register ToCPUCloner in _swigfaiss:
+_swigfaiss.ToCPUCloner_swigregister(ToCPUCloner)
+
+class ToGpuCloner(Cloner, GpuClonerOptions):
+    r""" Cloner specialized for CPU -> 1 GPU"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    provider = property(_swigfaiss.ToGpuCloner_provider_get, _swigfaiss.ToGpuCloner_provider_set)
+    device = property(_swigfaiss.ToGpuCloner_device_get, _swigfaiss.ToGpuCloner_device_set)
+
+    def __init__(self, prov, device, options):
+        _swigfaiss.ToGpuCloner_swiginit(self, _swigfaiss.new_ToGpuCloner(prov, device, options))
+
+    def clone_Index(self, index):
+        return _swigfaiss.ToGpuCloner_clone_Index(self, index)
+    __swig_destroy__ = _swigfaiss.delete_ToGpuCloner
+
+# Register ToGpuCloner in _swigfaiss:
+_swigfaiss.ToGpuCloner_swigregister(ToGpuCloner)
+
+class ToGpuClonerMultiple(Cloner, GpuMultipleClonerOptions):
+    r""" Cloner specialized for CPU -> multiple GPUs"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    sub_cloners = property(_swigfaiss.ToGpuClonerMultiple_sub_cloners_get, _swigfaiss.ToGpuClonerMultiple_sub_cloners_set)
+
+    def __init__(self, *args):
+        _swigfaiss.ToGpuClonerMultiple_swiginit(self, _swigfaiss.new_ToGpuClonerMultiple(*args))
+
+    def copy_ivf_shard(self, index_ivf, idx2, n, i):
+        return _swigfaiss.ToGpuClonerMultiple_copy_ivf_shard(self, index_ivf, idx2, n, i)
+
+    def clone_Index_to_shards(self, index):
+        return _swigfaiss.ToGpuClonerMultiple_clone_Index_to_shards(self, index)
+
+    def clone_Index(self, index):
+        r""" main function"""
+        return _swigfaiss.ToGpuClonerMultiple_clone_Index(self, index)
+    __swig_destroy__ = _swigfaiss.delete_ToGpuClonerMultiple
+
+# Register ToGpuClonerMultiple in _swigfaiss:
+_swigfaiss.ToGpuClonerMultiple_swigregister(ToGpuClonerMultiple)
+
+
+def index_gpu_to_cpu(gpu_index):
+    r""" converts any GPU index inside gpu_index to a CPU index"""
+    return _swigfaiss.index_gpu_to_cpu(gpu_index)
+
+def index_cpu_to_gpu(provider, device, index, options=None):
+    r""" converts any CPU index that can be converted to GPU"""
+    return _swigfaiss.index_cpu_to_gpu(provider, device, index, options)
+
+def index_cpu_to_gpu_multiple(provider, devices, index, options=None):
+    return _swigfaiss.index_cpu_to_gpu_multiple(provider, devices, index, options)
+class GpuProgressiveDimIndexFactory(ProgressiveDimIndexFactory):
+    r""" index factory for the ProgressiveDimClustering object"""
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    options = property(_swigfaiss.GpuProgressiveDimIndexFactory_options_get, _swigfaiss.GpuProgressiveDimIndexFactory_options_set)
+    vres = property(_swigfaiss.GpuProgressiveDimIndexFactory_vres_get, _swigfaiss.GpuProgressiveDimIndexFactory_vres_set)
+    devices = property(_swigfaiss.GpuProgressiveDimIndexFactory_devices_get, _swigfaiss.GpuProgressiveDimIndexFactory_devices_set)
+    ncall = property(_swigfaiss.GpuProgressiveDimIndexFactory_ncall_get, _swigfaiss.GpuProgressiveDimIndexFactory_ncall_set)
+
+    def __init__(self, ngpu):
+        _swigfaiss.GpuProgressiveDimIndexFactory_swiginit(self, _swigfaiss.new_GpuProgressiveDimIndexFactory(ngpu))
+
+    def __call__(self, dim):
+        return _swigfaiss.GpuProgressiveDimIndexFactory___call__(self, dim)
+    __swig_destroy__ = _swigfaiss.delete_GpuProgressiveDimIndexFactory
+
+# Register GpuProgressiveDimIndexFactory in _swigfaiss:
+_swigfaiss.GpuProgressiveDimIndexFactory_swigregister(GpuProgressiveDimIndexFactory)
+
+class PyCallbackIOWriter(IOWriter):
+    r"""
+    Copyright (c) Facebook, Inc. and its affiliates.
+
+    This source code is licensed under the MIT license found in the
+    LICENSE file in the root directory of this source tree.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    callback = property(_swigfaiss.PyCallbackIOWriter_callback_get, _swigfaiss.PyCallbackIOWriter_callback_set)
+    bs = property(_swigfaiss.PyCallbackIOWriter_bs_get, _swigfaiss.PyCallbackIOWriter_bs_set)
+
+    def __init__(self, *args):
+        r"""
+        Callback: Python function that takes a bytes object and
+        returns the number of bytes successfully written.
+        """
+        _swigfaiss.PyCallbackIOWriter_swiginit(self, _swigfaiss.new_PyCallbackIOWriter(*args))
+
+    def __call__(self, ptrv, size, nitems):
+        return _swigfaiss.PyCallbackIOWriter___call__(self, ptrv, size, nitems)
+    __swig_destroy__ = _swigfaiss.delete_PyCallbackIOWriter
+
+# Register PyCallbackIOWriter in _swigfaiss:
+_swigfaiss.PyCallbackIOWriter_swigregister(PyCallbackIOWriter)
+
+class PyCallbackIOReader(IOReader):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    callback = property(_swigfaiss.PyCallbackIOReader_callback_get, _swigfaiss.PyCallbackIOReader_callback_set)
+    bs = property(_swigfaiss.PyCallbackIOReader_bs_get, _swigfaiss.PyCallbackIOReader_bs_set)
+
+    def __init__(self, *args):
+        r"""
+         Callback: Python function that takes a size and returns a
+        bytes object with the resulting read
+        """
+        _swigfaiss.PyCallbackIOReader_swiginit(self, _swigfaiss.new_PyCallbackIOReader(*args))
+
+    def __call__(self, ptrv, size, nitems):
+        return _swigfaiss.PyCallbackIOReader___call__(self, ptrv, size, nitems)
+    __swig_destroy__ = _swigfaiss.delete_PyCallbackIOReader
+
+# Register PyCallbackIOReader in _swigfaiss:
+_swigfaiss.PyCallbackIOReader_swigregister(PyCallbackIOReader)
+
+
+def swig_ptr(a):
+    return _swigfaiss.swig_ptr(a)
+
+def rev_swig_ptr(*args):
+    return _swigfaiss.rev_swig_ptr(*args)
+class float_minheap_array_t(object):
+    r"""
+     a template structure for a set of [min|max]-heaps it is tailored
+    so that the actual data of the heaps can just live in compact
+    arrays.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nh = property(_swigfaiss.float_minheap_array_t_nh_get, _swigfaiss.float_minheap_array_t_nh_set, doc=r""" number of heaps""")
+    k = property(_swigfaiss.float_minheap_array_t_k_get, _swigfaiss.float_minheap_array_t_k_set, doc=r""" allocated size per heap""")
+    ids = property(_swigfaiss.float_minheap_array_t_ids_get, _swigfaiss.float_minheap_array_t_ids_set, doc=r""" identifiers (size nh * k)""")
+    val = property(_swigfaiss.float_minheap_array_t_val_get, _swigfaiss.float_minheap_array_t_val_set, doc=r""" values (distances or similarities), size nh * k""")
+
+    def get_val(self, key):
+        r""" Return the list of values for a heap"""
+        return _swigfaiss.float_minheap_array_t_get_val(self, key)
+
+    def get_ids(self, key):
+        r""" Correspponding identifiers"""
+        return _swigfaiss.float_minheap_array_t_get_ids(self, key)
+
+    def heapify(self):
+        r""" prepare all the heaps before adding"""
+        return _swigfaiss.float_minheap_array_t_heapify(self)
+
+    def addn(self, nj, vin, j0=0, i0=0, ni=-1):
+        r"""
+         add nj elements to heaps i0:i0+ni, with sequential ids
+
+        :type nj: int
+        :param nj:    nb of elements to add to each heap
+        :type vin: float
+        :param vin:   elements to add, size ni * nj
+        :type j0: int, optional
+        :param j0:    add this to the ids that are added
+        :type i0: int, optional
+        :param i0:    first heap to update
+        :type ni: int, optional
+        :param ni:    nb of elements to update (-1 = use nh)
+        """
+        return _swigfaiss.float_minheap_array_t_addn(self, nj, vin, j0, i0, ni)
+
+    def addn_with_ids(self, nj, vin, id_in=None, id_stride=0, i0=0, ni=-1):
+        r"""
+         same as addn
+
+        :type id_in: int, optional
+        :param id_in:     ids of the elements to add, size ni * nj
+        :type id_stride: int, optional
+        :param id_stride: stride for id_in
+        """
+        return _swigfaiss.float_minheap_array_t_addn_with_ids(self, nj, vin, id_in, id_stride, i0, ni)
+
+    def reorder(self):
+        r""" reorder all the heaps"""
+        return _swigfaiss.float_minheap_array_t_reorder(self)
+
+    def per_line_extrema(self, vals_out, idx_out):
+        r"""
+         this is not really a heap function. It just finds the per-line
+          extrema of each line of array D
+        :type vals_out: float
+        :param vals_out:    extreme value of each line (size nh, or NULL)
+        :type idx_out: int
+        :param idx_out:     index of extreme value (size nh or NULL)
+        """
+        return _swigfaiss.float_minheap_array_t_per_line_extrema(self, vals_out, idx_out)
+
+    def __init__(self):
+        _swigfaiss.float_minheap_array_t_swiginit(self, _swigfaiss.new_float_minheap_array_t())
+    __swig_destroy__ = _swigfaiss.delete_float_minheap_array_t
+
+# Register float_minheap_array_t in _swigfaiss:
+_swigfaiss.float_minheap_array_t_swigregister(float_minheap_array_t)
+
+class int_minheap_array_t(object):
+    r"""
+     a template structure for a set of [min|max]-heaps it is tailored
+    so that the actual data of the heaps can just live in compact
+    arrays.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nh = property(_swigfaiss.int_minheap_array_t_nh_get, _swigfaiss.int_minheap_array_t_nh_set, doc=r""" number of heaps""")
+    k = property(_swigfaiss.int_minheap_array_t_k_get, _swigfaiss.int_minheap_array_t_k_set, doc=r""" allocated size per heap""")
+    ids = property(_swigfaiss.int_minheap_array_t_ids_get, _swigfaiss.int_minheap_array_t_ids_set, doc=r""" identifiers (size nh * k)""")
+    val = property(_swigfaiss.int_minheap_array_t_val_get, _swigfaiss.int_minheap_array_t_val_set, doc=r""" values (distances or similarities), size nh * k""")
+
+    def get_val(self, key):
+        r""" Return the list of values for a heap"""
+        return _swigfaiss.int_minheap_array_t_get_val(self, key)
+
+    def get_ids(self, key):
+        r""" Correspponding identifiers"""
+        return _swigfaiss.int_minheap_array_t_get_ids(self, key)
+
+    def heapify(self):
+        r""" prepare all the heaps before adding"""
+        return _swigfaiss.int_minheap_array_t_heapify(self)
+
+    def addn(self, nj, vin, j0=0, i0=0, ni=-1):
+        r"""
+         add nj elements to heaps i0:i0+ni, with sequential ids
+
+        :type nj: int
+        :param nj:    nb of elements to add to each heap
+        :type vin: int
+        :param vin:   elements to add, size ni * nj
+        :type j0: int, optional
+        :param j0:    add this to the ids that are added
+        :type i0: int, optional
+        :param i0:    first heap to update
+        :type ni: int, optional
+        :param ni:    nb of elements to update (-1 = use nh)
+        """
+        return _swigfaiss.int_minheap_array_t_addn(self, nj, vin, j0, i0, ni)
+
+    def addn_with_ids(self, nj, vin, id_in=None, id_stride=0, i0=0, ni=-1):
+        r"""
+         same as addn
+
+        :type id_in: int, optional
+        :param id_in:     ids of the elements to add, size ni * nj
+        :type id_stride: int, optional
+        :param id_stride: stride for id_in
+        """
+        return _swigfaiss.int_minheap_array_t_addn_with_ids(self, nj, vin, id_in, id_stride, i0, ni)
+
+    def reorder(self):
+        r""" reorder all the heaps"""
+        return _swigfaiss.int_minheap_array_t_reorder(self)
+
+    def per_line_extrema(self, vals_out, idx_out):
+        r"""
+         this is not really a heap function. It just finds the per-line
+          extrema of each line of array D
+        :type vals_out: int
+        :param vals_out:    extreme value of each line (size nh, or NULL)
+        :type idx_out: int
+        :param idx_out:     index of extreme value (size nh or NULL)
+        """
+        return _swigfaiss.int_minheap_array_t_per_line_extrema(self, vals_out, idx_out)
+
+    def __init__(self):
+        _swigfaiss.int_minheap_array_t_swiginit(self, _swigfaiss.new_int_minheap_array_t())
+    __swig_destroy__ = _swigfaiss.delete_int_minheap_array_t
+
+# Register int_minheap_array_t in _swigfaiss:
+_swigfaiss.int_minheap_array_t_swigregister(int_minheap_array_t)
+
+class float_maxheap_array_t(object):
+    r"""
+     a template structure for a set of [min|max]-heaps it is tailored
+    so that the actual data of the heaps can just live in compact
+    arrays.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nh = property(_swigfaiss.float_maxheap_array_t_nh_get, _swigfaiss.float_maxheap_array_t_nh_set, doc=r""" number of heaps""")
+    k = property(_swigfaiss.float_maxheap_array_t_k_get, _swigfaiss.float_maxheap_array_t_k_set, doc=r""" allocated size per heap""")
+    ids = property(_swigfaiss.float_maxheap_array_t_ids_get, _swigfaiss.float_maxheap_array_t_ids_set, doc=r""" identifiers (size nh * k)""")
+    val = property(_swigfaiss.float_maxheap_array_t_val_get, _swigfaiss.float_maxheap_array_t_val_set, doc=r""" values (distances or similarities), size nh * k""")
+
+    def get_val(self, key):
+        r""" Return the list of values for a heap"""
+        return _swigfaiss.float_maxheap_array_t_get_val(self, key)
+
+    def get_ids(self, key):
+        r""" Correspponding identifiers"""
+        return _swigfaiss.float_maxheap_array_t_get_ids(self, key)
+
+    def heapify(self):
+        r""" prepare all the heaps before adding"""
+        return _swigfaiss.float_maxheap_array_t_heapify(self)
+
+    def addn(self, nj, vin, j0=0, i0=0, ni=-1):
+        r"""
+         add nj elements to heaps i0:i0+ni, with sequential ids
+
+        :type nj: int
+        :param nj:    nb of elements to add to each heap
+        :type vin: float
+        :param vin:   elements to add, size ni * nj
+        :type j0: int, optional
+        :param j0:    add this to the ids that are added
+        :type i0: int, optional
+        :param i0:    first heap to update
+        :type ni: int, optional
+        :param ni:    nb of elements to update (-1 = use nh)
+        """
+        return _swigfaiss.float_maxheap_array_t_addn(self, nj, vin, j0, i0, ni)
+
+    def addn_with_ids(self, nj, vin, id_in=None, id_stride=0, i0=0, ni=-1):
+        r"""
+         same as addn
+
+        :type id_in: int, optional
+        :param id_in:     ids of the elements to add, size ni * nj
+        :type id_stride: int, optional
+        :param id_stride: stride for id_in
+        """
+        return _swigfaiss.float_maxheap_array_t_addn_with_ids(self, nj, vin, id_in, id_stride, i0, ni)
+
+    def reorder(self):
+        r""" reorder all the heaps"""
+        return _swigfaiss.float_maxheap_array_t_reorder(self)
+
+    def per_line_extrema(self, vals_out, idx_out):
+        r"""
+         this is not really a heap function. It just finds the per-line
+          extrema of each line of array D
+        :type vals_out: float
+        :param vals_out:    extreme value of each line (size nh, or NULL)
+        :type idx_out: int
+        :param idx_out:     index of extreme value (size nh or NULL)
+        """
+        return _swigfaiss.float_maxheap_array_t_per_line_extrema(self, vals_out, idx_out)
+
+    def __init__(self):
+        _swigfaiss.float_maxheap_array_t_swiginit(self, _swigfaiss.new_float_maxheap_array_t())
+    __swig_destroy__ = _swigfaiss.delete_float_maxheap_array_t
+
+# Register float_maxheap_array_t in _swigfaiss:
+_swigfaiss.float_maxheap_array_t_swigregister(float_maxheap_array_t)
+
+class int_maxheap_array_t(object):
+    r"""
+     a template structure for a set of [min|max]-heaps it is tailored
+    so that the actual data of the heaps can just live in compact
+    arrays.
+    """
+
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    nh = property(_swigfaiss.int_maxheap_array_t_nh_get, _swigfaiss.int_maxheap_array_t_nh_set, doc=r""" number of heaps""")
+    k = property(_swigfaiss.int_maxheap_array_t_k_get, _swigfaiss.int_maxheap_array_t_k_set, doc=r""" allocated size per heap""")
+    ids = property(_swigfaiss.int_maxheap_array_t_ids_get, _swigfaiss.int_maxheap_array_t_ids_set, doc=r""" identifiers (size nh * k)""")
+    val = property(_swigfaiss.int_maxheap_array_t_val_get, _swigfaiss.int_maxheap_array_t_val_set, doc=r""" values (distances or similarities), size nh * k""")
+
+    def get_val(self, key):
+        r""" Return the list of values for a heap"""
+        return _swigfaiss.int_maxheap_array_t_get_val(self, key)
+
+    def get_ids(self, key):
+        r""" Correspponding identifiers"""
+        return _swigfaiss.int_maxheap_array_t_get_ids(self, key)
+
+    def heapify(self):
+        r""" prepare all the heaps before adding"""
+        return _swigfaiss.int_maxheap_array_t_heapify(self)
+
+    def addn(self, nj, vin, j0=0, i0=0, ni=-1):
+        r"""
+         add nj elements to heaps i0:i0+ni, with sequential ids
+
+        :type nj: int
+        :param nj:    nb of elements to add to each heap
+        :type vin: int
+        :param vin:   elements to add, size ni * nj
+        :type j0: int, optional
+        :param j0:    add this to the ids that are added
+        :type i0: int, optional
+        :param i0:    first heap to update
+        :type ni: int, optional
+        :param ni:    nb of elements to update (-1 = use nh)
+        """
+        return _swigfaiss.int_maxheap_array_t_addn(self, nj, vin, j0, i0, ni)
+
+    def addn_with_ids(self, nj, vin, id_in=None, id_stride=0, i0=0, ni=-1):
+        r"""
+         same as addn
+
+        :type id_in: int, optional
+        :param id_in:     ids of the elements to add, size ni * nj
+        :type id_stride: int, optional
+        :param id_stride: stride for id_in
+        """
+        return _swigfaiss.int_maxheap_array_t_addn_with_ids(self, nj, vin, id_in, id_stride, i0, ni)
+
+    def reorder(self):
+        r""" reorder all the heaps"""
+        return _swigfaiss.int_maxheap_array_t_reorder(self)
+
+    def per_line_extrema(self, vals_out, idx_out):
+        r"""
+         this is not really a heap function. It just finds the per-line
+          extrema of each line of array D
+        :type vals_out: int
+        :param vals_out:    extreme value of each line (size nh, or NULL)
+        :type idx_out: int
+        :param idx_out:     index of extreme value (size nh or NULL)
+        """
+        return _swigfaiss.int_maxheap_array_t_per_line_extrema(self, vals_out, idx_out)
+
+    def __init__(self):
+        _swigfaiss.int_maxheap_array_t_swiginit(self, _swigfaiss.new_int_maxheap_array_t())
+    __swig_destroy__ = _swigfaiss.delete_int_maxheap_array_t
+
+# Register int_maxheap_array_t in _swigfaiss:
+_swigfaiss.int_maxheap_array_t_swigregister(int_maxheap_array_t)
+
+
+def CMin_float_partition_fuzzy(vals, ids, n, q_min, q_max, q_out):
+    r"""
+     partitions the table into 0:q and q:n where all elements above q are >= all
+    elements below q (for C = CMax, for CMin comparisons are reversed)
+
+    Returns the partition threshold. The elements q:n are destroyed on output.
+    """
+    return _swigfaiss.CMin_float_partition_fuzzy(vals, ids, n, q_min, q_max, q_out)
+
+def CMax_float_partition_fuzzy(vals, ids, n, q_min, q_max, q_out):
+    r"""
+     partitions the table into 0:q and q:n where all elements above q are >= all
+    elements below q (for C = CMax, for CMin comparisons are reversed)
+
+    Returns the partition threshold. The elements q:n are destroyed on output.
+    """
+    return _swigfaiss.CMax_float_partition_fuzzy(vals, ids, n, q_min, q_max, q_out)
+class AlignedTableUint8(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    tab = property(_swigfaiss.AlignedTableUint8_tab_get, _swigfaiss.AlignedTableUint8_tab_set)
+    numel = property(_swigfaiss.AlignedTableUint8_numel_get, _swigfaiss.AlignedTableUint8_numel_set)
+
+    @staticmethod
+    def round_capacity(n):
+        return _swigfaiss.AlignedTableUint8_round_capacity(n)
+
+    def __init__(self, *args):
+        _swigfaiss.AlignedTableUint8_swiginit(self, _swigfaiss.new_AlignedTableUint8(*args))
+
+    def itemsize(self):
+        return _swigfaiss.AlignedTableUint8_itemsize(self)
+
+    def resize(self, n):
+        return _swigfaiss.AlignedTableUint8_resize(self, n)
+
+    def clear(self):
+        return _swigfaiss.AlignedTableUint8_clear(self)
+
+    def size(self):
+        return _swigfaiss.AlignedTableUint8_size(self)
+
+    def nbytes(self):
+        return _swigfaiss.AlignedTableUint8_nbytes(self)
+
+    def get(self, *args):
+        return _swigfaiss.AlignedTableUint8_get(self, *args)
+
+    def data(self, *args):
+        return _swigfaiss.AlignedTableUint8_data(self, *args)
+    __swig_destroy__ = _swigfaiss.delete_AlignedTableUint8
+
+# Register AlignedTableUint8 in _swigfaiss:
+_swigfaiss.AlignedTableUint8_swigregister(AlignedTableUint8)
+
+def AlignedTableUint8_round_capacity(n):
+    return _swigfaiss.AlignedTableUint8_round_capacity(n)
+
+class AlignedTableUint16(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    tab = property(_swigfaiss.AlignedTableUint16_tab_get, _swigfaiss.AlignedTableUint16_tab_set)
+    numel = property(_swigfaiss.AlignedTableUint16_numel_get, _swigfaiss.AlignedTableUint16_numel_set)
+
+    @staticmethod
+    def round_capacity(n):
+        return _swigfaiss.AlignedTableUint16_round_capacity(n)
+
+    def __init__(self, *args):
+        _swigfaiss.AlignedTableUint16_swiginit(self, _swigfaiss.new_AlignedTableUint16(*args))
+
+    def itemsize(self):
+        return _swigfaiss.AlignedTableUint16_itemsize(self)
+
+    def resize(self, n):
+        return _swigfaiss.AlignedTableUint16_resize(self, n)
+
+    def clear(self):
+        return _swigfaiss.AlignedTableUint16_clear(self)
+
+    def size(self):
+        return _swigfaiss.AlignedTableUint16_size(self)
+
+    def nbytes(self):
+        return _swigfaiss.AlignedTableUint16_nbytes(self)
+
+    def get(self, *args):
+        return _swigfaiss.AlignedTableUint16_get(self, *args)
+
+    def data(self, *args):
+        return _swigfaiss.AlignedTableUint16_data(self, *args)
+    __swig_destroy__ = _swigfaiss.delete_AlignedTableUint16
+
+# Register AlignedTableUint16 in _swigfaiss:
+_swigfaiss.AlignedTableUint16_swigregister(AlignedTableUint16)
+
+def AlignedTableUint16_round_capacity(n):
+    return _swigfaiss.AlignedTableUint16_round_capacity(n)
+
+class AlignedTableFloat32(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    tab = property(_swigfaiss.AlignedTableFloat32_tab_get, _swigfaiss.AlignedTableFloat32_tab_set)
+    numel = property(_swigfaiss.AlignedTableFloat32_numel_get, _swigfaiss.AlignedTableFloat32_numel_set)
+
+    @staticmethod
+    def round_capacity(n):
+        return _swigfaiss.AlignedTableFloat32_round_capacity(n)
+
+    def __init__(self, *args):
+        _swigfaiss.AlignedTableFloat32_swiginit(self, _swigfaiss.new_AlignedTableFloat32(*args))
+
+    def itemsize(self):
+        return _swigfaiss.AlignedTableFloat32_itemsize(self)
+
+    def resize(self, n):
+        return _swigfaiss.AlignedTableFloat32_resize(self, n)
+
+    def clear(self):
+        return _swigfaiss.AlignedTableFloat32_clear(self)
+
+    def size(self):
+        return _swigfaiss.AlignedTableFloat32_size(self)
+
+    def nbytes(self):
+        return _swigfaiss.AlignedTableFloat32_nbytes(self)
+
+    def get(self, *args):
+        return _swigfaiss.AlignedTableFloat32_get(self, *args)
+
+    def data(self, *args):
+        return _swigfaiss.AlignedTableFloat32_data(self, *args)
+    __swig_destroy__ = _swigfaiss.delete_AlignedTableFloat32
+
+# Register AlignedTableFloat32 in _swigfaiss:
+_swigfaiss.AlignedTableFloat32_swigregister(AlignedTableFloat32)
+
+def AlignedTableFloat32_round_capacity(n):
+    return _swigfaiss.AlignedTableFloat32_round_capacity(n)
+
+
+def CMax_uint16_partition_fuzzy(*args):
+    return _swigfaiss.CMax_uint16_partition_fuzzy(*args)
+
+def CMin_uint16_partition_fuzzy(*args):
+    return _swigfaiss.CMin_uint16_partition_fuzzy(*args)
+
+def omp_set_num_threads(num_threads):
+    return _swigfaiss.omp_set_num_threads(num_threads)
+
+def omp_get_max_threads():
+    return _swigfaiss.omp_get_max_threads()
+
+def memcpy(dest, src, n):
+    return _swigfaiss.memcpy(dest, src, n)
+
+def cast_integer_to_uint8_ptr(x):
+    return _swigfaiss.cast_integer_to_uint8_ptr(x)
+
+def cast_integer_to_float_ptr(x):
+    return _swigfaiss.cast_integer_to_float_ptr(x)
+
+def cast_integer_to_idx_t_ptr(x):
+    return _swigfaiss.cast_integer_to_idx_t_ptr(x)
+
+def cast_integer_to_int_ptr(x):
+    return _swigfaiss.cast_integer_to_int_ptr(x)
+
+def cast_integer_to_void_ptr(x):
+    return _swigfaiss.cast_integer_to_void_ptr(x)
+class MapLong2Long(object):
+    thisown = property(lambda x: x.this.own(), lambda x, v: x.this.own(v), doc="The membership flag")
+    __repr__ = _swig_repr
+    map = property(_swigfaiss.MapLong2Long_map_get, _swigfaiss.MapLong2Long_map_set)
+
+    def add(self, n, keys, vals):
+        return _swigfaiss.MapLong2Long_add(self, n, keys, vals)
+
+    def search(self, key):
+        return _swigfaiss.MapLong2Long_search(self, key)
+
+    def search_multiple(self, n, keys, vals):
+        return _swigfaiss.MapLong2Long_search_multiple(self, n, keys, vals)
+
+    def __init__(self):
+        _swigfaiss.MapLong2Long_swiginit(self, _swigfaiss.new_MapLong2Long())
+    __swig_destroy__ = _swigfaiss.delete_MapLong2Long
+
+# Register MapLong2Long in _swigfaiss:
+_swigfaiss.MapLong2Long_swigregister(MapLong2Long)
+
+
+def wait():
+    return _swigfaiss.wait()
+
+
diff --git a/build/hc_faiss.log b/build/hc_faiss.log
new file mode 100644
index 0000000000000000000000000000000000000000..bded582fb7903e3784ce93a481e2a74f1bab1ce0
--- /dev/null
+++ b/build/hc_faiss.log
@@ -0,0 +1,433 @@
+/usr/bin/cmake3 -S/home/huchen/FAISS/faiss -B/home/huchen/FAISS/faiss/build --check-build-system CMakeFiles/Makefile.cmake 0
+make  -f CMakeFiles/Makefile2 faiss
+make[1]: Entering directory '/home/huchen/FAISS/faiss/build'
+/usr/bin/cmake3 -S/home/huchen/FAISS/faiss -B/home/huchen/FAISS/faiss/build --check-build-system CMakeFiles/Makefile.cmake 0
+/usr/bin/cmake3 -E cmake_progress_start /home/huchen/FAISS/faiss/build/CMakeFiles 40
+make  -f CMakeFiles/Makefile2 faiss/CMakeFiles/faiss.dir/all
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/CMakeFiles/faiss.dir/build.make faiss/CMakeFiles/faiss.dir/depend
+make[3]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss /home/huchen/FAISS/faiss/build/faiss/CMakeFiles/faiss.dir/DependInfo.cmake --color=
+Dependee "/home/huchen/FAISS/faiss/build/faiss/CMakeFiles/faiss.dir/DependInfo.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/CMakeFiles/faiss.dir/depend.internal".
+Dependee "/home/huchen/FAISS/faiss/build/faiss/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/CMakeFiles/faiss.dir/depend.internal".
+Scanning dependencies of target faiss
+make[3]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/CMakeFiles/faiss.dir/build.make faiss/CMakeFiles/faiss.dir/build
+make[3]: Entering directory '/home/huchen/FAISS/faiss/build'
+[  2%] Building CXX object faiss/CMakeFiles/faiss.dir/AutoTune.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/AutoTune.cpp.o -c /home/huchen/FAISS/faiss/faiss/AutoTune.cpp
+[  2%] Building CXX object faiss/CMakeFiles/faiss.dir/Clustering.cpp.o
+[  2%] Building CXX object faiss/CMakeFiles/faiss.dir/IVFlib.cpp.o
+[  2%] Building CXX object faiss/CMakeFiles/faiss.dir/Index.cpp.o
+[  5%] Building CXX object faiss/CMakeFiles/faiss.dir/Index2Layer.cpp.o
+[  5%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexAdditiveQuantizer.cpp.o
+[  5%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexBinary.cpp.o
+[  5%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexBinaryFlat.cpp.o
+[  5%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexBinaryHash.cpp.o
+[  7%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexBinaryHNSW.cpp.o
+[  7%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexBinaryFromFloat.cpp.o
+[ 10%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexBinaryIVF.cpp.o
+[ 10%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexFlat.cpp.o
+[ 10%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexHNSW.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/Clustering.cpp.o -c /home/huchen/FAISS/faiss/faiss/Clustering.cpp
+[ 12%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexIVF.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/IVFlib.cpp.o -c /home/huchen/FAISS/faiss/faiss/IVFlib.cpp
+[ 12%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexIVFPQR.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/Index.cpp.o -c /home/huchen/FAISS/faiss/faiss/Index.cpp
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+[ 12%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexFlatCodes.cpp.o
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+[ 12%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexLattice.cpp.o
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+[ 12%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexIVFPQFastScan.cpp.o
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+[ 12%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexIVFFlat.cpp.o
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+[ 15%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexIVFPQ.cpp.o
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+[ 15%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexNSG.cpp.o
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+[ 15%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexIVFAdditiveQuantizer.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/IndexIVFAdditiveQuantizer.cpp.o -c /home/huchen/FAISS/faiss/faiss/IndexIVFAdditiveQuantizer.cpp
+[ 17%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexNNDescent.cpp.o
+[ 17%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexLSH.cpp.o
+[ 20%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexRefine.cpp.o
+[ 20%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexIVFSpectralHash.cpp.o
+[ 20%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexReplicas.cpp.o
+[ 22%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexPQ.cpp.o
+[ 22%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexPQFastScan.cpp.o
+[ 22%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexPreTransform.cpp.o
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+[ 22%] Building CXX object faiss/CMakeFiles/faiss.dir/impl/AuxIndexStructures.cpp.o
+[ 22%] Building CXX object faiss/CMakeFiles/faiss.dir/MetaIndexes.cpp.o
+[ 22%] Building CXX object faiss/CMakeFiles/faiss.dir/IndexScalarQuantizer.cpp.o
+[ 22%] Building CXX object faiss/CMakeFiles/faiss.dir/index_factory.cpp.o
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+[ 25%] Building CXX object faiss/CMakeFiles/faiss.dir/MatrixStats.cpp.o
+[ 25%] Building CXX object faiss/CMakeFiles/faiss.dir/VectorTransform.cpp.o
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+[ 37%] Building CXX object faiss/CMakeFiles/faiss.dir/impl/pq4_fast_scan_search_qbs.cpp.o
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+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/impl/io.cpp.o -c /home/huchen/FAISS/faiss/faiss/impl/io.cpp
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/impl/lattice_Zn.cpp.o -c /home/huchen/FAISS/faiss/faiss/impl/lattice_Zn.cpp
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/impl/pq4_fast_scan.cpp.o -c /home/huchen/FAISS/faiss/faiss/impl/pq4_fast_scan.cpp
+[ 40%] Building CXX object faiss/CMakeFiles/faiss.dir/impl/kmeans1d.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/impl/kmeans1d.cpp.o -c /home/huchen/FAISS/faiss/faiss/impl/kmeans1d.cpp
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/impl/pq4_fast_scan_search_1.cpp.o -c /home/huchen/FAISS/faiss/faiss/impl/pq4_fast_scan_search_1.cpp
+[ 40%] Building CXX object faiss/CMakeFiles/faiss.dir/impl/NNDescent.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/impl/pq4_fast_scan_search_qbs.cpp.o -c /home/huchen/FAISS/faiss/faiss/impl/pq4_fast_scan_search_qbs.cpp
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/impl/NNDescent.cpp.o -c /home/huchen/FAISS/faiss/faiss/impl/NNDescent.cpp
+[ 40%] Building CXX object faiss/CMakeFiles/faiss.dir/invlists/BlockInvertedLists.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/invlists/BlockInvertedLists.cpp.o -c /home/huchen/FAISS/faiss/faiss/invlists/BlockInvertedLists.cpp
+[ 42%] Building CXX object faiss/CMakeFiles/faiss.dir/invlists/DirectMap.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/invlists/DirectMap.cpp.o -c /home/huchen/FAISS/faiss/faiss/invlists/DirectMap.cpp
+[ 45%] Building CXX object faiss/CMakeFiles/faiss.dir/utils/Heap.cpp.o
+[ 45%] Building CXX object faiss/CMakeFiles/faiss.dir/utils/WorkerThread.cpp.o
+[ 45%] Building CXX object faiss/CMakeFiles/faiss.dir/invlists/InvertedLists.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/invlists/InvertedLists.cpp.o -c /home/huchen/FAISS/faiss/faiss/invlists/InvertedLists.cpp
+[ 45%] Building CXX object faiss/CMakeFiles/faiss.dir/utils/distances.cpp.o
+[ 45%] Building CXX object faiss/CMakeFiles/faiss.dir/invlists/InvertedListsIOHook.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/invlists/InvertedListsIOHook.cpp.o -c /home/huchen/FAISS/faiss/faiss/invlists/InvertedListsIOHook.cpp
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+[ 45%] Building CXX object faiss/CMakeFiles/faiss.dir/utils/distances_simd.cpp.o
+[ 45%] Building CXX object faiss/CMakeFiles/faiss.dir/utils/hamming.cpp.o
+[ 47%] Building CXX object faiss/CMakeFiles/faiss.dir/utils/extra_distances.cpp.o
+[ 47%] Building CXX object faiss/CMakeFiles/faiss.dir/utils/partitioning.cpp.o
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+[ 50%] Building CXX object faiss/CMakeFiles/faiss.dir/utils/quantize_lut.cpp.o
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+[ 50%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/GpuCloner.cpp.o
+[ 50%] Building CXX object faiss/CMakeFiles/faiss.dir/invlists/OnDiskInvertedLists.cpp.o
+[ 52%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/GpuAutoTune.cpp.o
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+[ 52%] Building CXX object faiss/CMakeFiles/faiss.dir/utils/utils.cpp.o
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+[ 52%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/GpuClonerOptions.cpp.o
+[ 52%] Building CXX object faiss/CMakeFiles/faiss.dir/utils/random.cpp.o
+[ 52%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/GpuDistance.cu.o
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+[ 55%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/GpuIcmEncoder.cu.o
+[ 55%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/GpuIndex.cu.o
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+[ 55%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/GpuIndexBinaryFlat.cu.o
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+[ 57%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/GpuIndexFlat.cu.o
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+[ 57%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/GpuIndexIVFFlat.cu.o
+[ 57%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/GpuIndexIVF.cu.o
+[ 57%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/GpuIndexIVFPQ.cu.o
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+[ 57%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/GpuResources.cpp.o
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+[ 60%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/GpuIndexIVFScalarQuantizer.cu.o
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+[ 62%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/BinaryDistance.cu.o
+[ 62%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/BinaryFlatIndex.cu.o
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+[ 62%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/Distance.cu.o
+[ 62%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/IVFBase.cu.o
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+[ 65%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/IVFAppend.cu.o
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+[ 65%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/IVFPQ.cu.o
+[ 67%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/IVFFlatScan.cu.o
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+[ 70%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/IVFUtilsSelect2.cu.o
+[ 72%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/L2Norm.cu.o
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+[ 72%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/L2Select.cu.o
+[ 72%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/PQScanMultiPassPrecomputed.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/IVFUtilsSelect2.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/IVFUtilsSelect2.cu
+[ 72%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/InterleavedCodes.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/InterleavedCodes.cpp.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/InterleavedCodes.cpp
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/L2Norm.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/L2Norm.cu
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/L2Select.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/L2Select.cu
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/PQScanMultiPassPrecomputed.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/PQScanMultiPassPrecomputed.cu
+[ 75%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/RemapIndices.cpp.o
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+[ 75%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved1.cu.o
+[ 75%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/VectorResidual.cu.o
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+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved1.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/scan/IVFInterleaved1.cu
+[ 77%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved64.cu.o
+[ 77%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved32.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved32.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/scan/IVFInterleaved32.cu
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved64.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/scan/IVFInterleaved64.cu
+[ 77%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved256.cu.o
+[ 77%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved128.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved128.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/scan/IVFInterleaved128.cu
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved256.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/scan/IVFInterleaved256.cu
+[ 80%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved512.cu.o
+[ 80%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved1024.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved512.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/scan/IVFInterleaved512.cu
+[ 80%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved2048.cu.o
+[ 80%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/impl/IcmEncoder.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved2048.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/scan/IVFInterleaved2048.cu
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/scan/IVFInterleaved1024.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/scan/IVFInterleaved1024.cu
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/impl/IcmEncoder.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/impl/IcmEncoder.cu
+[ 82%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/BlockSelectFloat.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/BlockSelectFloat.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/BlockSelectFloat.cu
+[ 82%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/DeviceUtils.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/DeviceUtils.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/DeviceUtils.cu
+[ 82%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/StackDeviceMemory.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/StackDeviceMemory.cpp.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/StackDeviceMemory.cpp
+[ 82%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/Timer.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/Timer.cpp.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/Timer.cpp
+[ 85%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/WarpSelectFloat.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/WarpSelectFloat.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/WarpSelectFloat.cu
+[ 85%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloat1.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloat1.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/blockselect/BlockSelectFloat1.cu
+[ 85%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloat32.cu.o
+[ 87%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloat64.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloat32.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/blockselect/BlockSelectFloat32.cu
+[ 87%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloat128.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloat64.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/blockselect/BlockSelectFloat64.cu
+[ 87%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloat256.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloat128.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/blockselect/BlockSelectFloat128.cu
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloat256.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/blockselect/BlockSelectFloat256.cu
+[ 87%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloatF512.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloatF512.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/blockselect/BlockSelectFloatF512.cu
+[ 90%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloatF1024.cu.o
+[ 90%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloatF2048.cu.o
+[ 90%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloatT512.cu.o
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+[ 92%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloatT1024.cu.o
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+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloatT1024.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/blockselect/BlockSelectFloatT1024.cu
+[ 92%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloatT2048.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/blockselect/BlockSelectFloatT2048.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/blockselect/BlockSelectFloatT2048.cu
+[ 92%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloat1.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloat1.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/warpselect/WarpSelectFloat1.cu
+[ 92%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloat32.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloat32.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/warpselect/WarpSelectFloat32.cu
+[ 95%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloat64.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloat64.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/warpselect/WarpSelectFloat64.cu
+[ 95%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloat128.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloat128.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/warpselect/WarpSelectFloat128.cu
+[ 95%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloat256.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloat256.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/warpselect/WarpSelectFloat256.cu
+[ 97%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloatF512.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloatF512.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/warpselect/WarpSelectFloatF512.cu
+[ 97%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloatF1024.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloatF1024.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/warpselect/WarpSelectFloatF1024.cu
+[ 97%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloatF2048.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloatF2048.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/warpselect/WarpSelectFloatF2048.cu
+[ 97%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloatT512.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloatT512.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/warpselect/WarpSelectFloatT512.cu
+[100%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloatT1024.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloatT1024.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/warpselect/WarpSelectFloatT1024.cu
+[100%] Building CXX object faiss/CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloatT2048.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss && /opt/dtk-21.04/bin/hipcc  -DFINTEGER=int -Dfaiss_EXPORTS -I/home/huchen/FAISS/faiss  -fPIC   -fopenmp=libomp -std=gnu++11 -o CMakeFiles/faiss.dir/gpu/utils/warpselect/WarpSelectFloatT2048.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/utils/warpselect/WarpSelectFloatT2048.cu
+/home/huchen/FAISS/faiss/faiss/gpu/utils/DeviceUtils.cu:44:17: warning: 'hipProfilerStart' is deprecated: use roctracer/rocTX instead [-Wdeprecated-declarations]
+    CUDA_VERIFY(hipProfilerStart());
+                ^
+/opt/dtk-21.04/hip/include/hip/hcc_detail/hip_runtime_api.h:3277:1: note: 'hipProfilerStart' has been explicitly marked deprecated here
+DEPRECATED("use roctracer/rocTX instead")
+^
+/opt/dtk-21.04/hip/include/hip/hcc_detail/hip_runtime_api.h:55:41: note: expanded from macro 'DEPRECATED'
+#define DEPRECATED(msg) __attribute__ ((deprecated(msg)))
+                                        ^
+/home/huchen/FAISS/faiss/faiss/gpu/utils/DeviceUtils.cu:48:17: warning: 'hipProfilerStop' is deprecated: use roctracer/rocTX instead [-Wdeprecated-declarations]
+    CUDA_VERIFY(hipProfilerStop());
+                ^
+/opt/dtk-21.04/hip/include/hip/hcc_detail/hip_runtime_api.h:3286:1: note: 'hipProfilerStop' has been explicitly marked deprecated here
+DEPRECATED("use roctracer/rocTX instead")
+^
+/opt/dtk-21.04/hip/include/hip/hcc_detail/hip_runtime_api.h:55:41: note: expanded from macro 'DEPRECATED'
+#define DEPRECATED(msg) __attribute__ ((deprecated(msg)))
+                                        ^
+2 warnings generated when compiling for gfx900.
+/home/huchen/FAISS/faiss/faiss/gpu/utils/DeviceUtils.cu:44:17: warning: 'hipProfilerStart' is deprecated: use roctracer/rocTX instead [-Wdeprecated-declarations]
+    CUDA_VERIFY(hipProfilerStart());
+                ^
+/opt/dtk-21.04/hip/include/hip/hcc_detail/hip_runtime_api.h:3277:1: note: 'hipProfilerStart' has been explicitly marked deprecated here
+DEPRECATED("use roctracer/rocTX instead")
+^
+/opt/dtk-21.04/hip/include/hip/hcc_detail/hip_runtime_api.h:55:41: note: expanded from macro 'DEPRECATED'
+#define DEPRECATED(msg) __attribute__ ((deprecated(msg)))
+                                        ^
+/home/huchen/FAISS/faiss/faiss/gpu/utils/DeviceUtils.cu:48:17: warning: 'hipProfilerStop' is deprecated: use roctracer/rocTX instead [-Wdeprecated-declarations]
+    CUDA_VERIFY(hipProfilerStop());
+                ^
+/opt/dtk-21.04/hip/include/hip/hcc_detail/hip_runtime_api.h:3286:1: note: 'hipProfilerStop' has been explicitly marked deprecated here
+DEPRECATED("use roctracer/rocTX instead")
+^
+/opt/dtk-21.04/hip/include/hip/hcc_detail/hip_runtime_api.h:55:41: note: expanded from macro 'DEPRECATED'
+#define DEPRECATED(msg) __attribute__ ((deprecated(msg)))
+                                        ^
+2 warnings generated when compiling for gfx906.
+/home/huchen/FAISS/faiss/faiss/gpu/utils/DeviceUtils.cu:44:17: warning: 'hipProfilerStart' is deprecated: use roctracer/rocTX instead [-Wdeprecated-declarations]
+    CUDA_VERIFY(hipProfilerStart());
+                ^
+/opt/dtk-21.04/hip/include/hip/hcc_detail/hip_runtime_api.h:3277:1: note: 'hipProfilerStart' has been explicitly marked deprecated here
+DEPRECATED("use roctracer/rocTX instead")
+^
+/opt/dtk-21.04/hip/include/hip/hcc_detail/hip_runtime_api.h:55:41: note: expanded from macro 'DEPRECATED'
+#define DEPRECATED(msg) __attribute__ ((deprecated(msg)))
+                                        ^
+/home/huchen/FAISS/faiss/faiss/gpu/utils/DeviceUtils.cu:48:17: warning: 'hipProfilerStop' is deprecated: use roctracer/rocTX instead [-Wdeprecated-declarations]
+    CUDA_VERIFY(hipProfilerStop());
+                ^
+/opt/dtk-21.04/hip/include/hip/hcc_detail/hip_runtime_api.h:3286:1: note: 'hipProfilerStop' has been explicitly marked deprecated here
+DEPRECATED("use roctracer/rocTX instead")
+^
+/opt/dtk-21.04/hip/include/hip/hcc_detail/hip_runtime_api.h:55:41: note: expanded from macro 'DEPRECATED'
+#define DEPRECATED(msg) __attribute__ ((deprecated(msg)))
+                                        ^
+2 warnings generated when compiling for host.
+In file included from /home/huchen/FAISS/faiss/faiss/gpu/GpuDistance.cu:12:
+In file included from /home/huchen/FAISS/faiss/faiss/gpu/impl/Distance.cuh:10:
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+__launch_bounds__(kWarpSize* kWarpSize) __global__ void generalDistance(
+                                                        ^
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+In file included from /home/huchen/FAISS/faiss/faiss/gpu/impl/FlatIndex.cu:9:
+In file included from /home/huchen/FAISS/faiss/faiss/gpu/impl/Distance.cuh:10:
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+__launch_bounds__(kWarpSize* kWarpSize) __global__ void generalDistance(
+                                                        ^
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+12 warnings generated when compiling for gfx900.
+12 warnings generated when compiling for gfx900.
+In file included from /home/huchen/FAISS/faiss/faiss/gpu/GpuDistance.cu:12:
+In file included from /home/huchen/FAISS/faiss/faiss/gpu/impl/Distance.cuh:10:
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+__launch_bounds__(kWarpSize* kWarpSize) __global__ void generalDistance(
+                                                        ^
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+In file included from /home/huchen/FAISS/faiss/faiss/gpu/impl/FlatIndex.cu:9:
+In file included from /home/huchen/FAISS/faiss/faiss/gpu/impl/Distance.cuh:10:
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+__launch_bounds__(kWarpSize* kWarpSize) __global__ void generalDistance(
+                                                        ^
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+/home/huchen/FAISS/faiss/faiss/gpu/impl/GeneralDistance.cuh:87:57: warning: loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering [-Wpass-failed=transform-warning]
+12 warnings generated when compiling for gfx906.
+12 warnings generated when compiling for gfx906.
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+cd /home/huchen/FAISS/faiss/build/tests && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -fopenmp=libomp -pthread -std=gnu++11 -o CMakeFiles/faiss_test.dir/test_pq_encoding.cpp.o -c /home/huchen/FAISS/faiss/tests/test_pq_encoding.cpp
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+cd /home/huchen/FAISS/faiss/build/tests && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -fopenmp=libomp -pthread -std=gnu++11 -o CMakeFiles/faiss_test.dir/test_sliding_ivf.cpp.o -c /home/huchen/FAISS/faiss/tests/test_sliding_ivf.cpp
+[ 86%] Building CXX object tests/CMakeFiles/faiss_test.dir/test_threaded_index.cpp.o
+cd /home/huchen/FAISS/faiss/build/tests && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -fopenmp=libomp -pthread -std=gnu++11 -o CMakeFiles/faiss_test.dir/test_threaded_index.cpp.o -c /home/huchen/FAISS/faiss/tests/test_threaded_index.cpp
+[ 86%] Building CXX object tests/CMakeFiles/faiss_test.dir/test_transfer_invlists.cpp.o
+cd /home/huchen/FAISS/faiss/build/tests && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -fopenmp=libomp -pthread -std=gnu++11 -o CMakeFiles/faiss_test.dir/test_transfer_invlists.cpp.o -c /home/huchen/FAISS/faiss/tests/test_transfer_invlists.cpp
+[ 86%] Building CXX object tests/CMakeFiles/faiss_test.dir/test_mem_leak.cpp.o
+cd /home/huchen/FAISS/faiss/build/tests && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -fopenmp=libomp -pthread -std=gnu++11 -o CMakeFiles/faiss_test.dir/test_mem_leak.cpp.o -c /home/huchen/FAISS/faiss/tests/test_mem_leak.cpp
+[ 88%] Linking CXX executable faiss_test
+cd /home/huchen/FAISS/faiss/build/tests && /usr/bin/cmake3 -E cmake_link_script CMakeFiles/faiss_test.dir/link.txt --verbose=1
+/opt/dtk-21.04/bin/hipcc    -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib CMakeFiles/faiss_test.dir/test_binary_flat.cpp.o CMakeFiles/faiss_test.dir/test_dealloc_invlists.cpp.o CMakeFiles/faiss_test.dir/test_ivfpq_codec.cpp.o CMakeFiles/faiss_test.dir/test_ivfpq_indexing.cpp.o CMakeFiles/faiss_test.dir/test_lowlevel_ivf.cpp.o CMakeFiles/faiss_test.dir/test_merge.cpp.o CMakeFiles/faiss_test.dir/test_omp_threads.cpp.o CMakeFiles/faiss_test.dir/test_ondisk_ivf.cpp.o CMakeFiles/faiss_test.dir/test_pairs_decoding.cpp.o CMakeFiles/faiss_test.dir/test_params_override.cpp.o CMakeFiles/faiss_test.dir/test_pq_encoding.cpp.o CMakeFiles/faiss_test.dir/test_sliding_ivf.cpp.o CMakeFiles/faiss_test.dir/test_threaded_index.cpp.o CMakeFiles/faiss_test.dir/test_transfer_invlists.cpp.o CMakeFiles/faiss_test.dir/test_mem_leak.cpp.o  -o faiss_test  -Wl,-rpath,/home/huchen/FAISS/faiss/build/faiss:/home/huchen/FAISS/faiss/build/lib -lopenblas ../faiss/libfaiss.so ../lib/libgtest_main.so /opt/dtk-21.04/llvm/lib/libomp.so ../lib/libgtest.so -pthread 
+cd /home/huchen/FAISS/faiss/build/tests && /usr/bin/cmake3 -D TEST_TARGET=faiss_test -D TEST_EXECUTABLE=/home/huchen/FAISS/faiss/build/tests/faiss_test -D TEST_EXECUTOR= -D TEST_WORKING_DIR=/home/huchen/FAISS/faiss/build/tests -D TEST_EXTRA_ARGS= -D TEST_PROPERTIES= -D TEST_PREFIX= -D TEST_SUFFIX= -D NO_PRETTY_TYPES=FALSE -D NO_PRETTY_VALUES=FALSE -D TEST_LIST=faiss_test_TESTS -D CTEST_FILE=/home/huchen/FAISS/faiss/build/tests/faiss_test[1]_tests.cmake -D TEST_DISCOVERY_TIMEOUT=5 -P /usr/share/cmake3/Modules/GoogleTestAddTests.cmake
+WARNING clustering 1000 points to 40 centroids: please provide at least 1560 training points
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+[ 88%] Built target faiss_test
+make  -f faiss/gpu/test/CMakeFiles/faiss_gpu_test_helper.dir/build.make faiss/gpu/test/CMakeFiles/faiss_gpu_test_helper.dir/depend
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss/gpu/test /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss/gpu/test /home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/faiss_gpu_test_helper.dir/DependInfo.cmake --color=
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/faiss_gpu_test_helper.dir/DependInfo.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/faiss_gpu_test_helper.dir/depend.internal".
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/faiss_gpu_test_helper.dir/depend.internal".
+Scanning dependencies of target faiss_gpu_test_helper
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/gpu/test/CMakeFiles/faiss_gpu_test_helper.dir/build.make faiss/gpu/test/CMakeFiles/faiss_gpu_test_helper.dir/build
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+[ 88%] Building CXX object faiss/gpu/test/CMakeFiles/faiss_gpu_test_helper.dir/TestUtils.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /opt/dtk-21.04/bin/hipcc  -Dfaiss_gpu_test_helper_EXPORTS -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -fPIC   -pthread -std=gnu++11 -o CMakeFiles/faiss_gpu_test_helper.dir/TestUtils.cpp.o -c /home/huchen/FAISS/faiss/faiss/gpu/test/TestUtils.cpp
+[ 90%] Linking CXX shared library libfaiss_gpu_test_helper.so
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -E cmake_link_script CMakeFiles/faiss_gpu_test_helper.dir/link.txt --verbose=1
+/opt/dtk-21.04/bin/hipcc -fPIC  -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib -shared -Wl,-soname,libfaiss_gpu_test_helper.so -o libfaiss_gpu_test_helper.so CMakeFiles/faiss_gpu_test_helper.dir/TestUtils.cpp.o  -Wl,-rpath,/home/huchen/FAISS/faiss/build/faiss:/home/huchen/FAISS/faiss/build/lib ../../libfaiss.so ../../../lib/libgtest.so -lopenblas -pthread 
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+[ 90%] Built target faiss_gpu_test_helper
+make  -f faiss/gpu/test/CMakeFiles/TestCodePacking.dir/build.make faiss/gpu/test/CMakeFiles/TestCodePacking.dir/depend
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss/gpu/test /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss/gpu/test /home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestCodePacking.dir/DependInfo.cmake --color=
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestCodePacking.dir/DependInfo.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestCodePacking.dir/depend.internal".
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestCodePacking.dir/depend.internal".
+Scanning dependencies of target TestCodePacking
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/gpu/test/CMakeFiles/TestCodePacking.dir/build.make faiss/gpu/test/CMakeFiles/TestCodePacking.dir/build
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+[ 92%] Building CXX object faiss/gpu/test/CMakeFiles/TestCodePacking.dir/TestCodePacking.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -pthread -std=gnu++11 -o CMakeFiles/TestCodePacking.dir/TestCodePacking.cpp.o -c /home/huchen/FAISS/faiss/faiss/gpu/test/TestCodePacking.cpp
+[ 92%] Linking HIP executable TestCodePacking
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -E cmake_link_script CMakeFiles/TestCodePacking.dir/link.txt --verbose=1
+/opt/dtk-21.04/hip/bin/hipcc_cmake_linker_helper     -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib CMakeFiles/TestCodePacking.dir/TestCodePacking.cpp.o -o TestCodePacking   -L/opt/dtk-21.04/hip/lib  -L/opt/dtk-21.04/llvm/lib/clang/12.0.0/lib/linux  -L/opt/rh/devtoolset-7/root/usr/lib/gcc/x86_64-redhat-linux/7  -L/opt/rh/devtoolset-7/root/usr/lib64  -L/opt/rh/devtoolset-7/root/usr/lib  -L/opt/dtk-21.04/llvm/lib  libfaiss_gpu_test_helper.so ../../libfaiss.so ../../../lib/libgtest.so -pthread -lopenblas -lgcc_s -lgcc -lpthread -lm -lamdhip64 -lclang_rt.builtins-x86_64 -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc 
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 234.
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 235.
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -D TEST_TARGET=TestCodePacking -D TEST_EXECUTABLE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestCodePacking -D TEST_EXECUTOR= -D TEST_WORKING_DIR=/home/huchen/FAISS/faiss/build/faiss/gpu/test -D TEST_EXTRA_ARGS= -D TEST_PROPERTIES= -D TEST_PREFIX= -D TEST_SUFFIX= -D NO_PRETTY_TYPES=FALSE -D NO_PRETTY_VALUES=FALSE -D TEST_LIST=TestCodePacking_TESTS -D CTEST_FILE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestCodePacking[1]_tests.cmake -D TEST_DISCOVERY_TIMEOUT=5 -P /usr/share/cmake3/Modules/GoogleTestAddTests.cmake
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+[ 92%] Built target TestCodePacking
+make  -f faiss/gpu/test/CMakeFiles/TestGpuMemoryException.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuMemoryException.dir/depend
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss/gpu/test /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss/gpu/test /home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuMemoryException.dir/DependInfo.cmake --color=
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuMemoryException.dir/DependInfo.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuMemoryException.dir/depend.internal".
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuMemoryException.dir/depend.internal".
+Scanning dependencies of target TestGpuMemoryException
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/gpu/test/CMakeFiles/TestGpuMemoryException.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuMemoryException.dir/build
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+[ 92%] Building CXX object faiss/gpu/test/CMakeFiles/TestGpuMemoryException.dir/TestGpuMemoryException.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -pthread -std=gnu++11 -o CMakeFiles/TestGpuMemoryException.dir/TestGpuMemoryException.cpp.o -c /home/huchen/FAISS/faiss/faiss/gpu/test/TestGpuMemoryException.cpp
+[ 94%] Linking HIP executable TestGpuMemoryException
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -E cmake_link_script CMakeFiles/TestGpuMemoryException.dir/link.txt --verbose=1
+/opt/dtk-21.04/hip/bin/hipcc_cmake_linker_helper     -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib CMakeFiles/TestGpuMemoryException.dir/TestGpuMemoryException.cpp.o -o TestGpuMemoryException   -L/opt/dtk-21.04/hip/lib  -L/opt/dtk-21.04/llvm/lib/clang/12.0.0/lib/linux  -L/opt/rh/devtoolset-7/root/usr/lib/gcc/x86_64-redhat-linux/7  -L/opt/rh/devtoolset-7/root/usr/lib64  -L/opt/rh/devtoolset-7/root/usr/lib  -L/opt/dtk-21.04/llvm/lib  libfaiss_gpu_test_helper.so ../../libfaiss.so ../../../lib/libgtest.so -pthread -lopenblas -lgcc_s -lgcc -lpthread -lm -lamdhip64 -lclang_rt.builtins-x86_64 -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc 
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 234.
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 235.
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -D TEST_TARGET=TestGpuMemoryException -D TEST_EXECUTABLE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuMemoryException -D TEST_EXECUTOR= -D TEST_WORKING_DIR=/home/huchen/FAISS/faiss/build/faiss/gpu/test -D TEST_EXTRA_ARGS= -D TEST_PROPERTIES= -D TEST_PREFIX= -D TEST_SUFFIX= -D NO_PRETTY_TYPES=FALSE -D NO_PRETTY_VALUES=FALSE -D TEST_LIST=TestGpuMemoryException_TESTS -D CTEST_FILE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuMemoryException[1]_tests.cmake -D TEST_DISCOVERY_TIMEOUT=5 -P /usr/share/cmake3/Modules/GoogleTestAddTests.cmake
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+[ 94%] Built target TestGpuMemoryException
+make  -f faiss/gpu/test/CMakeFiles/TestGpuIndexFlat.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuIndexFlat.dir/depend
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss/gpu/test /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss/gpu/test /home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexFlat.dir/DependInfo.cmake --color=
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexFlat.dir/DependInfo.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexFlat.dir/depend.internal".
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexFlat.dir/depend.internal".
+Scanning dependencies of target TestGpuIndexFlat
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/gpu/test/CMakeFiles/TestGpuIndexFlat.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuIndexFlat.dir/build
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+[ 94%] Building CXX object faiss/gpu/test/CMakeFiles/TestGpuIndexFlat.dir/TestGpuIndexFlat.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -pthread -std=gnu++11 -o CMakeFiles/TestGpuIndexFlat.dir/TestGpuIndexFlat.cpp.o -c /home/huchen/FAISS/faiss/faiss/gpu/test/TestGpuIndexFlat.cpp
+[ 96%] Linking HIP executable TestGpuIndexFlat
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -E cmake_link_script CMakeFiles/TestGpuIndexFlat.dir/link.txt --verbose=1
+/opt/dtk-21.04/hip/bin/hipcc_cmake_linker_helper     -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib CMakeFiles/TestGpuIndexFlat.dir/TestGpuIndexFlat.cpp.o -o TestGpuIndexFlat   -L/opt/dtk-21.04/hip/lib  -L/opt/dtk-21.04/llvm/lib/clang/12.0.0/lib/linux  -L/opt/rh/devtoolset-7/root/usr/lib/gcc/x86_64-redhat-linux/7  -L/opt/rh/devtoolset-7/root/usr/lib64  -L/opt/rh/devtoolset-7/root/usr/lib  -L/opt/dtk-21.04/llvm/lib  libfaiss_gpu_test_helper.so ../../libfaiss.so ../../../lib/libgtest.so -pthread -lopenblas -lgcc_s -lgcc -lpthread -lm -lamdhip64 -lclang_rt.builtins-x86_64 -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc 
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 234.
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 235.
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -D TEST_TARGET=TestGpuIndexFlat -D TEST_EXECUTABLE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat -D TEST_EXECUTOR= -D TEST_WORKING_DIR=/home/huchen/FAISS/faiss/build/faiss/gpu/test -D TEST_EXTRA_ARGS= -D TEST_PROPERTIES= -D TEST_PREFIX= -D TEST_SUFFIX= -D NO_PRETTY_TYPES=FALSE -D NO_PRETTY_VALUES=FALSE -D TEST_LIST=TestGpuIndexFlat_TESTS -D CTEST_FILE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexFlat[1]_tests.cmake -D TEST_DISCOVERY_TIMEOUT=5 -P /usr/share/cmake3/Modules/GoogleTestAddTests.cmake
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+[ 96%] Built target TestGpuIndexFlat
+make  -f faiss/gpu/test/CMakeFiles/TestGpuIndexIVFFlat.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuIndexIVFFlat.dir/depend
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss/gpu/test /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss/gpu/test /home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexIVFFlat.dir/DependInfo.cmake --color=
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexIVFFlat.dir/DependInfo.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexIVFFlat.dir/depend.internal".
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexIVFFlat.dir/depend.internal".
+Scanning dependencies of target TestGpuIndexIVFFlat
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/gpu/test/CMakeFiles/TestGpuIndexIVFFlat.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuIndexIVFFlat.dir/build
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+[ 96%] Building CXX object faiss/gpu/test/CMakeFiles/TestGpuIndexIVFFlat.dir/TestGpuIndexIVFFlat.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -pthread -std=gnu++11 -o CMakeFiles/TestGpuIndexIVFFlat.dir/TestGpuIndexIVFFlat.cpp.o -c /home/huchen/FAISS/faiss/faiss/gpu/test/TestGpuIndexIVFFlat.cpp
+[ 96%] Linking HIP executable TestGpuIndexIVFFlat
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -E cmake_link_script CMakeFiles/TestGpuIndexIVFFlat.dir/link.txt --verbose=1
+/opt/dtk-21.04/hip/bin/hipcc_cmake_linker_helper     -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib CMakeFiles/TestGpuIndexIVFFlat.dir/TestGpuIndexIVFFlat.cpp.o -o TestGpuIndexIVFFlat   -L/opt/dtk-21.04/hip/lib  -L/opt/dtk-21.04/llvm/lib/clang/12.0.0/lib/linux  -L/opt/rh/devtoolset-7/root/usr/lib/gcc/x86_64-redhat-linux/7  -L/opt/rh/devtoolset-7/root/usr/lib64  -L/opt/rh/devtoolset-7/root/usr/lib  -L/opt/dtk-21.04/llvm/lib  libfaiss_gpu_test_helper.so ../../libfaiss.so ../../../lib/libgtest.so -pthread -lopenblas -lgcc_s -lgcc -lpthread -lm -lamdhip64 -lclang_rt.builtins-x86_64 -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc 
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 234.
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 235.
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -D TEST_TARGET=TestGpuIndexIVFFlat -D TEST_EXECUTABLE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat -D TEST_EXECUTOR= -D TEST_WORKING_DIR=/home/huchen/FAISS/faiss/build/faiss/gpu/test -D TEST_EXTRA_ARGS= -D TEST_PROPERTIES= -D TEST_PREFIX= -D TEST_SUFFIX= -D NO_PRETTY_TYPES=FALSE -D NO_PRETTY_VALUES=FALSE -D TEST_LIST=TestGpuIndexIVFFlat_TESTS -D CTEST_FILE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFFlat[1]_tests.cmake -D TEST_DISCOVERY_TIMEOUT=5 -P /usr/share/cmake3/Modules/GoogleTestAddTests.cmake
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+[ 96%] Built target TestGpuIndexIVFFlat
+make  -f faiss/gpu/test/CMakeFiles/TestGpuDistance.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuDistance.dir/depend
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss/gpu/test /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss/gpu/test /home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuDistance.dir/DependInfo.cmake --color=
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuDistance.dir/DependInfo.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuDistance.dir/depend.internal".
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuDistance.dir/depend.internal".
+Scanning dependencies of target TestGpuDistance
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/gpu/test/CMakeFiles/TestGpuDistance.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuDistance.dir/build
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+[ 96%] Building CXX object faiss/gpu/test/CMakeFiles/TestGpuDistance.dir/TestGpuDistance.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -pthread -std=gnu++11 -o CMakeFiles/TestGpuDistance.dir/TestGpuDistance.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/test/TestGpuDistance.cu
+[ 96%] Linking HIP executable TestGpuDistance
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -E cmake_link_script CMakeFiles/TestGpuDistance.dir/link.txt --verbose=1
+/opt/dtk-21.04/hip/bin/hipcc_cmake_linker_helper     -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib CMakeFiles/TestGpuDistance.dir/TestGpuDistance.cu.o -o TestGpuDistance   -L/opt/dtk-21.04/hip/lib  -L/opt/dtk-21.04/llvm/lib/clang/12.0.0/lib/linux  -L/opt/rh/devtoolset-7/root/usr/lib/gcc/x86_64-redhat-linux/7  -L/opt/rh/devtoolset-7/root/usr/lib64  -L/opt/rh/devtoolset-7/root/usr/lib  -L/opt/dtk-21.04/llvm/lib  libfaiss_gpu_test_helper.so ../../libfaiss.so ../../../lib/libgtest.so -pthread -lopenblas -lgcc_s -lgcc -lpthread -lm -lamdhip64 -lclang_rt.builtins-x86_64 -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc 
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 234.
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 235.
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -D TEST_TARGET=TestGpuDistance -D TEST_EXECUTABLE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance -D TEST_EXECUTOR= -D TEST_WORKING_DIR=/home/huchen/FAISS/faiss/build/faiss/gpu/test -D TEST_EXTRA_ARGS= -D TEST_PROPERTIES= -D TEST_PREFIX= -D TEST_SUFFIX= -D NO_PRETTY_TYPES=FALSE -D NO_PRETTY_VALUES=FALSE -D TEST_LIST=TestGpuDistance_TESTS -D CTEST_FILE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuDistance[1]_tests.cmake -D TEST_DISCOVERY_TIMEOUT=5 -P /usr/share/cmake3/Modules/GoogleTestAddTests.cmake
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+[ 96%] Built target TestGpuDistance
+make  -f faiss/gpu/test/CMakeFiles/TestGpuIndexBinaryFlat.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuIndexBinaryFlat.dir/depend
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss/gpu/test /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss/gpu/test /home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexBinaryFlat.dir/DependInfo.cmake --color=
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexBinaryFlat.dir/DependInfo.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexBinaryFlat.dir/depend.internal".
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexBinaryFlat.dir/depend.internal".
+Scanning dependencies of target TestGpuIndexBinaryFlat
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/gpu/test/CMakeFiles/TestGpuIndexBinaryFlat.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuIndexBinaryFlat.dir/build
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+[ 98%] Building CXX object faiss/gpu/test/CMakeFiles/TestGpuIndexBinaryFlat.dir/TestGpuIndexBinaryFlat.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -pthread -std=gnu++11 -o CMakeFiles/TestGpuIndexBinaryFlat.dir/TestGpuIndexBinaryFlat.cpp.o -c /home/huchen/FAISS/faiss/faiss/gpu/test/TestGpuIndexBinaryFlat.cpp
+[ 98%] Linking HIP executable TestGpuIndexBinaryFlat
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -E cmake_link_script CMakeFiles/TestGpuIndexBinaryFlat.dir/link.txt --verbose=1
+/opt/dtk-21.04/hip/bin/hipcc_cmake_linker_helper     -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib CMakeFiles/TestGpuIndexBinaryFlat.dir/TestGpuIndexBinaryFlat.cpp.o -o TestGpuIndexBinaryFlat   -L/opt/dtk-21.04/hip/lib  -L/opt/dtk-21.04/llvm/lib/clang/12.0.0/lib/linux  -L/opt/rh/devtoolset-7/root/usr/lib/gcc/x86_64-redhat-linux/7  -L/opt/rh/devtoolset-7/root/usr/lib64  -L/opt/rh/devtoolset-7/root/usr/lib  -L/opt/dtk-21.04/llvm/lib  libfaiss_gpu_test_helper.so ../../libfaiss.so ../../../lib/libgtest.so -pthread -lopenblas -lgcc_s -lgcc -lpthread -lm -lamdhip64 -lclang_rt.builtins-x86_64 -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc 
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 234.
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 235.
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -D TEST_TARGET=TestGpuIndexBinaryFlat -D TEST_EXECUTABLE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexBinaryFlat -D TEST_EXECUTOR= -D TEST_WORKING_DIR=/home/huchen/FAISS/faiss/build/faiss/gpu/test -D TEST_EXTRA_ARGS= -D TEST_PROPERTIES= -D TEST_PREFIX= -D TEST_SUFFIX= -D NO_PRETTY_TYPES=FALSE -D NO_PRETTY_VALUES=FALSE -D TEST_LIST=TestGpuIndexBinaryFlat_TESTS -D CTEST_FILE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexBinaryFlat[1]_tests.cmake -D TEST_DISCOVERY_TIMEOUT=5 -P /usr/share/cmake3/Modules/GoogleTestAddTests.cmake
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+[ 98%] Built target TestGpuIndexBinaryFlat
+make  -f faiss/gpu/test/CMakeFiles/TestGpuIndexIVFPQ.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuIndexIVFPQ.dir/depend
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss/gpu/test /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss/gpu/test /home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexIVFPQ.dir/DependInfo.cmake --color=
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexIVFPQ.dir/DependInfo.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexIVFPQ.dir/depend.internal".
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexIVFPQ.dir/depend.internal".
+Scanning dependencies of target TestGpuIndexIVFPQ
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/gpu/test/CMakeFiles/TestGpuIndexIVFPQ.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuIndexIVFPQ.dir/build
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+[ 98%] Building CXX object faiss/gpu/test/CMakeFiles/TestGpuIndexIVFPQ.dir/TestGpuIndexIVFPQ.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -pthread -std=gnu++11 -o CMakeFiles/TestGpuIndexIVFPQ.dir/TestGpuIndexIVFPQ.cpp.o -c /home/huchen/FAISS/faiss/faiss/gpu/test/TestGpuIndexIVFPQ.cpp
+[100%] Linking HIP executable TestGpuIndexIVFPQ
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -E cmake_link_script CMakeFiles/TestGpuIndexIVFPQ.dir/link.txt --verbose=1
+/opt/dtk-21.04/hip/bin/hipcc_cmake_linker_helper     -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib CMakeFiles/TestGpuIndexIVFPQ.dir/TestGpuIndexIVFPQ.cpp.o -o TestGpuIndexIVFPQ   -L/opt/dtk-21.04/hip/lib  -L/opt/dtk-21.04/llvm/lib/clang/12.0.0/lib/linux  -L/opt/rh/devtoolset-7/root/usr/lib/gcc/x86_64-redhat-linux/7  -L/opt/rh/devtoolset-7/root/usr/lib64  -L/opt/rh/devtoolset-7/root/usr/lib  -L/opt/dtk-21.04/llvm/lib  libfaiss_gpu_test_helper.so ../../libfaiss.so ../../../lib/libgtest.so -pthread -lopenblas -lgcc_s -lgcc -lpthread -lm -lamdhip64 -lclang_rt.builtins-x86_64 -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc 
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 234.
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 235.
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -D TEST_TARGET=TestGpuIndexIVFPQ -D TEST_EXECUTABLE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ -D TEST_EXECUTOR= -D TEST_WORKING_DIR=/home/huchen/FAISS/faiss/build/faiss/gpu/test -D TEST_EXTRA_ARGS= -D TEST_PROPERTIES= -D TEST_PREFIX= -D TEST_SUFFIX= -D NO_PRETTY_TYPES=FALSE -D NO_PRETTY_VALUES=FALSE -D TEST_LIST=TestGpuIndexIVFPQ_TESTS -D CTEST_FILE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFPQ[1]_tests.cmake -D TEST_DISCOVERY_TIMEOUT=5 -P /usr/share/cmake3/Modules/GoogleTestAddTests.cmake
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+[100%] Built target TestGpuIndexIVFPQ
+make  -f faiss/gpu/test/CMakeFiles/TestGpuIndexIVFScalarQuantizer.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuIndexIVFScalarQuantizer.dir/depend
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss/gpu/test /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss/gpu/test /home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexIVFScalarQuantizer.dir/DependInfo.cmake --color=
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexIVFScalarQuantizer.dir/DependInfo.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexIVFScalarQuantizer.dir/depend.internal".
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuIndexIVFScalarQuantizer.dir/depend.internal".
+Scanning dependencies of target TestGpuIndexIVFScalarQuantizer
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/gpu/test/CMakeFiles/TestGpuIndexIVFScalarQuantizer.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuIndexIVFScalarQuantizer.dir/build
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+[100%] Building CXX object faiss/gpu/test/CMakeFiles/TestGpuIndexIVFScalarQuantizer.dir/TestGpuIndexIVFScalarQuantizer.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -pthread -std=gnu++11 -o CMakeFiles/TestGpuIndexIVFScalarQuantizer.dir/TestGpuIndexIVFScalarQuantizer.cpp.o -c /home/huchen/FAISS/faiss/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer.cpp
+[100%] Linking HIP executable TestGpuIndexIVFScalarQuantizer
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -E cmake_link_script CMakeFiles/TestGpuIndexIVFScalarQuantizer.dir/link.txt --verbose=1
+/opt/dtk-21.04/hip/bin/hipcc_cmake_linker_helper     -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib CMakeFiles/TestGpuIndexIVFScalarQuantizer.dir/TestGpuIndexIVFScalarQuantizer.cpp.o -o TestGpuIndexIVFScalarQuantizer   -L/opt/dtk-21.04/hip/lib  -L/opt/dtk-21.04/llvm/lib/clang/12.0.0/lib/linux  -L/opt/rh/devtoolset-7/root/usr/lib/gcc/x86_64-redhat-linux/7  -L/opt/rh/devtoolset-7/root/usr/lib64  -L/opt/rh/devtoolset-7/root/usr/lib  -L/opt/dtk-21.04/llvm/lib  libfaiss_gpu_test_helper.so ../../libfaiss.so ../../../lib/libgtest.so -pthread -lopenblas -lgcc_s -lgcc -lpthread -lm -lamdhip64 -lclang_rt.builtins-x86_64 -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc 
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 234.
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 235.
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -D TEST_TARGET=TestGpuIndexIVFScalarQuantizer -D TEST_EXECUTABLE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer -D TEST_EXECUTOR= -D TEST_WORKING_DIR=/home/huchen/FAISS/faiss/build/faiss/gpu/test -D TEST_EXTRA_ARGS= -D TEST_PROPERTIES= -D TEST_PREFIX= -D TEST_SUFFIX= -D NO_PRETTY_TYPES=FALSE -D NO_PRETTY_VALUES=FALSE -D TEST_LIST=TestGpuIndexIVFScalarQuantizer_TESTS -D CTEST_FILE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuIndexIVFScalarQuantizer[1]_tests.cmake -D TEST_DISCOVERY_TIMEOUT=5 -P /usr/share/cmake3/Modules/GoogleTestAddTests.cmake
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+[100%] Built target TestGpuIndexIVFScalarQuantizer
+make  -f faiss/gpu/test/CMakeFiles/TestGpuSelect.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuSelect.dir/depend
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss/gpu/test /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss/gpu/test /home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuSelect.dir/DependInfo.cmake --color=
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuSelect.dir/DependInfo.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuSelect.dir/depend.internal".
+Dependee "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/gpu/test/CMakeFiles/TestGpuSelect.dir/depend.internal".
+Scanning dependencies of target TestGpuSelect
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/gpu/test/CMakeFiles/TestGpuSelect.dir/build.make faiss/gpu/test/CMakeFiles/TestGpuSelect.dir/build
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+[100%] Building CXX object faiss/gpu/test/CMakeFiles/TestGpuSelect.dir/TestGpuSelect.cu.o
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /opt/dtk-21.04/bin/hipcc   -I/home/huchen/FAISS/faiss -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest/include -isystem /home/huchen/FAISS/faiss/build/_deps/googletest-src/googletest  -pthread -std=gnu++11 -o CMakeFiles/TestGpuSelect.dir/TestGpuSelect.cu.o -c /home/huchen/FAISS/faiss/faiss/gpu/test/TestGpuSelect.cu
+[100%] Linking HIP executable TestGpuSelect
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -E cmake_link_script CMakeFiles/TestGpuSelect.dir/link.txt --verbose=1
+/opt/dtk-21.04/hip/bin/hipcc_cmake_linker_helper     -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib64 -Wl,-rpath=/opt/rh/devtoolset-7/root/usr/lib CMakeFiles/TestGpuSelect.dir/TestGpuSelect.cu.o -o TestGpuSelect   -L/opt/dtk-21.04/hip/lib  -L/opt/dtk-21.04/llvm/lib/clang/12.0.0/lib/linux  -L/opt/rh/devtoolset-7/root/usr/lib/gcc/x86_64-redhat-linux/7  -L/opt/rh/devtoolset-7/root/usr/lib64  -L/opt/rh/devtoolset-7/root/usr/lib  -L/opt/dtk-21.04/llvm/lib  libfaiss_gpu_test_helper.so ../../libfaiss.so ../../../lib/libgtest.so -pthread -lopenblas -lgcc_s -lgcc -lpthread -lm -lamdhip64 -lclang_rt.builtins-x86_64 -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc 
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 234.
+Use of uninitialized value $HIP_CLANG_INCLUDE_PATH in concatenation (.) or string at /opt/dtk-21.04/hip/bin/hipcc line 235.
+cd /home/huchen/FAISS/faiss/build/faiss/gpu/test && /usr/bin/cmake3 -D TEST_TARGET=TestGpuSelect -D TEST_EXECUTABLE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuSelect -D TEST_EXECUTOR= -D TEST_WORKING_DIR=/home/huchen/FAISS/faiss/build/faiss/gpu/test -D TEST_EXTRA_ARGS= -D TEST_PROPERTIES= -D TEST_PREFIX= -D TEST_SUFFIX= -D NO_PRETTY_TYPES=FALSE -D NO_PRETTY_VALUES=FALSE -D TEST_LIST=TestGpuSelect_TESTS -D CTEST_FILE=/home/huchen/FAISS/faiss/build/faiss/gpu/test/TestGpuSelect[1]_tests.cmake -D TEST_DISCOVERY_TIMEOUT=5 -P /usr/share/cmake3/Modules/GoogleTestAddTests.cmake
+make[2]: Leaving directory '/home/huchen/FAISS/faiss/build'
+[100%] Built target TestGpuSelect
+make[1]: Leaving directory '/home/huchen/FAISS/faiss/build'
+/usr/bin/cmake3 -E cmake_progress_start /home/huchen/FAISS/faiss/build/CMakeFiles 0
+make  -f CMakeFiles/Makefile2 preinstall
+make[1]: Entering directory '/home/huchen/FAISS/faiss/build'
+make[1]: Nothing to be done for 'preinstall'.
+make[1]: Leaving directory '/home/huchen/FAISS/faiss/build'
+Install the project...
+/usr/bin/cmake3 -P cmake_install.cmake
+-- Install configuration: ""
+-- Installing: /usr/local/lib64/libfaiss.so
+-- Set runtime path of "/usr/local/lib64/libfaiss.so" to ""
+-- Up-to-date: /usr/local/include/faiss/AutoTune.h
+-- Up-to-date: /usr/local/include/faiss/Clustering.h
+-- Up-to-date: /usr/local/include/faiss/IVFlib.h
+-- Up-to-date: /usr/local/include/faiss/Index.h
+-- Up-to-date: /usr/local/include/faiss/Index2Layer.h
+-- Up-to-date: /usr/local/include/faiss/IndexAdditiveQuantizer.h
+-- Up-to-date: /usr/local/include/faiss/IndexBinary.h
+-- Up-to-date: /usr/local/include/faiss/IndexBinaryFlat.h
+-- Up-to-date: /usr/local/include/faiss/IndexBinaryFromFloat.h
+-- Up-to-date: /usr/local/include/faiss/IndexBinaryHNSW.h
+-- Up-to-date: /usr/local/include/faiss/IndexBinaryHash.h
+-- Up-to-date: /usr/local/include/faiss/IndexBinaryIVF.h
+-- Up-to-date: /usr/local/include/faiss/IndexFlat.h
+-- Up-to-date: /usr/local/include/faiss/IndexFlatCodes.h
+-- Up-to-date: /usr/local/include/faiss/IndexHNSW.h
+-- Up-to-date: /usr/local/include/faiss/IndexIVF.h
+-- Up-to-date: /usr/local/include/faiss/IndexIVFAdditiveQuantizer.h
+-- Up-to-date: /usr/local/include/faiss/IndexIVFFlat.h
+-- Up-to-date: /usr/local/include/faiss/IndexIVFPQ.h
+-- Up-to-date: /usr/local/include/faiss/IndexIVFPQFastScan.h
+-- Up-to-date: /usr/local/include/faiss/IndexIVFPQR.h
+-- Up-to-date: /usr/local/include/faiss/IndexIVFSpectralHash.h
+-- Up-to-date: /usr/local/include/faiss/IndexLSH.h
+-- Up-to-date: /usr/local/include/faiss/IndexLattice.h
+-- Up-to-date: /usr/local/include/faiss/IndexNNDescent.h
+-- Up-to-date: /usr/local/include/faiss/IndexNSG.h
+-- Up-to-date: /usr/local/include/faiss/IndexPQ.h
+-- Up-to-date: /usr/local/include/faiss/IndexPQFastScan.h
+-- Up-to-date: /usr/local/include/faiss/IndexPreTransform.h
+-- Up-to-date: /usr/local/include/faiss/IndexRefine.h
+-- Up-to-date: /usr/local/include/faiss/IndexReplicas.h
+-- Up-to-date: /usr/local/include/faiss/IndexAdditiveQuantizer.h
+-- Up-to-date: /usr/local/include/faiss/IndexScalarQuantizer.h
+-- Up-to-date: /usr/local/include/faiss/IndexShards.h
+-- Up-to-date: /usr/local/include/faiss/MatrixStats.h
+-- Up-to-date: /usr/local/include/faiss/MetaIndexes.h
+-- Up-to-date: /usr/local/include/faiss/MetricType.h
+-- Up-to-date: /usr/local/include/faiss/VectorTransform.h
+-- Up-to-date: /usr/local/include/faiss/clone_index.h
+-- Up-to-date: /usr/local/include/faiss/index_factory.h
+-- Up-to-date: /usr/local/include/faiss/index_io.h
+-- Up-to-date: /usr/local/include/faiss/impl/AdditiveQuantizer.h
+-- Up-to-date: /usr/local/include/faiss/impl/AuxIndexStructures.h
+-- Up-to-date: /usr/local/include/faiss/impl/FaissAssert.h
+-- Up-to-date: /usr/local/include/faiss/impl/FaissException.h
+-- Up-to-date: /usr/local/include/faiss/impl/HNSW.h
+-- Up-to-date: /usr/local/include/faiss/impl/LocalSearchQuantizer.h
+-- Up-to-date: /usr/local/include/faiss/impl/NNDescent.h
+-- Up-to-date: /usr/local/include/faiss/impl/NSG.h
+-- Up-to-date: /usr/local/include/faiss/impl/PolysemousTraining.h
+-- Up-to-date: /usr/local/include/faiss/impl/ProductQuantizer-inl.h
+-- Up-to-date: /usr/local/include/faiss/impl/ProductQuantizer.h
+-- Up-to-date: /usr/local/include/faiss/impl/ResidualQuantizer.h
+-- Up-to-date: /usr/local/include/faiss/impl/ResultHandler.h
+-- Up-to-date: /usr/local/include/faiss/impl/ScalarQuantizer.h
+-- Up-to-date: /usr/local/include/faiss/impl/ThreadedIndex-inl.h
+-- Up-to-date: /usr/local/include/faiss/impl/ThreadedIndex.h
+-- Up-to-date: /usr/local/include/faiss/impl/io.h
+-- Up-to-date: /usr/local/include/faiss/impl/io_macros.h
+-- Up-to-date: /usr/local/include/faiss/impl/kmeans1d.h
+-- Up-to-date: /usr/local/include/faiss/impl/lattice_Zn.h
+-- Up-to-date: /usr/local/include/faiss/impl/platform_macros.h
+-- Up-to-date: /usr/local/include/faiss/impl/pq4_fast_scan.h
+-- Up-to-date: /usr/local/include/faiss/impl/simd_result_handlers.h
+-- Up-to-date: /usr/local/include/faiss/invlists/BlockInvertedLists.h
+-- Up-to-date: /usr/local/include/faiss/invlists/DirectMap.h
+-- Up-to-date: /usr/local/include/faiss/invlists/InvertedLists.h
+-- Up-to-date: /usr/local/include/faiss/invlists/InvertedListsIOHook.h
+-- Up-to-date: /usr/local/include/faiss/utils/AlignedTable.h
+-- Up-to-date: /usr/local/include/faiss/utils/Heap.h
+-- Up-to-date: /usr/local/include/faiss/utils/WorkerThread.h
+-- Up-to-date: /usr/local/include/faiss/utils/distances.h
+-- Up-to-date: /usr/local/include/faiss/utils/extra_distances-inl.h
+-- Up-to-date: /usr/local/include/faiss/utils/extra_distances.h
+-- Up-to-date: /usr/local/include/faiss/utils/hamming-inl.h
+-- Up-to-date: /usr/local/include/faiss/utils/hamming.h
+-- Up-to-date: /usr/local/include/faiss/utils/ordered_key_value.h
+-- Up-to-date: /usr/local/include/faiss/utils/partitioning.h
+-- Up-to-date: /usr/local/include/faiss/utils/quantize_lut.h
+-- Up-to-date: /usr/local/include/faiss/utils/random.h
+-- Up-to-date: /usr/local/include/faiss/utils/simdlib.h
+-- Up-to-date: /usr/local/include/faiss/utils/simdlib_avx2.h
+-- Up-to-date: /usr/local/include/faiss/utils/simdlib_emulated.h
+-- Up-to-date: /usr/local/include/faiss/utils/simdlib_neon.h
+-- Up-to-date: /usr/local/include/faiss/utils/utils.h
+-- Up-to-date: /usr/local/include/faiss/invlists/OnDiskInvertedLists.h
+-- Installing: /usr/local/share/faiss/faiss-config.cmake
+-- Installing: /usr/local/share/faiss/faiss-config-version.cmake
+-- Installing: /usr/local/share/faiss/faiss-targets.cmake
+-- Installing: /usr/local/share/faiss/faiss-targets-noconfig.cmake
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuAutoTune.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuCloner.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuClonerOptions.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuDistance.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuIcmEncoder.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuFaissAssert.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuIndex.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuIndexBinaryFlat.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuIndexFlat.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuIndexIVF.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuIndexIVFFlat.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuIndexIVFPQ.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuIndexIVFScalarQuantizer.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuIndicesOptions.h
+-- Up-to-date: /usr/local/include/faiss/gpu/GpuResources.h
+-- Up-to-date: /usr/local/include/faiss/gpu/StandardGpuResources.h
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/BinaryDistance.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/BinaryFlatIndex.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/BroadcastSum.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/Distance.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/DistanceUtils.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/FlatIndex.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/GeneralDistance.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/GpuScalarQuantizer.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/IVFAppend.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/IVFBase.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/IVFFlat.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/IVFFlatScan.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/IVFInterleaved.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/IVFPQ.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/IVFUtils.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/InterleavedCodes.h
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/L2Norm.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/L2Select.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/PQCodeDistances-inl.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/PQCodeDistances.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/PQCodeLoad.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/PQScanMultiPassNoPrecomputed-inl.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/PQScanMultiPassNoPrecomputed.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/PQScanMultiPassPrecomputed.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/RemapIndices.h
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/VectorResidual.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/scan/IVFInterleavedImpl.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/impl/IcmEncoder.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/BlockSelectKernel.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/Comparators.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/ConversionOperators.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/CopyUtils.cuh
+-- Installing: /usr/local/include/faiss/gpu/utils/DeviceDefs.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/DeviceTensor-inl.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/DeviceTensor.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/DeviceUtils.h
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/DeviceVector.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/Float16.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/HostTensor-inl.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/HostTensor.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/Limits.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/LoadStoreOperators.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/MathOperators.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/MatrixMult-inl.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/MatrixMult.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/MergeNetworkBlock.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/MergeNetworkUtils.cuh
+-- Installing: /usr/local/include/faiss/gpu/utils/MergeNetworkWarp.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/NoTypeTensor.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/Pair.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/PtxUtils.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/ReductionOperators.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/Reductions.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/Select.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/StackDeviceMemory.h
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/StaticUtils.h
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/Tensor-inl.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/Tensor.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/ThrustAllocator.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/Timer.h
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/Transpose.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/WarpPackedBits.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/WarpSelectKernel.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/WarpShuffles.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/blockselect/BlockSelectImpl.cuh
+-- Up-to-date: /usr/local/include/faiss/gpu/utils/warpselect/WarpSelectImpl.cuh
diff --git a/build/hc_swigfaiss.log b/build/hc_swigfaiss.log
new file mode 100644
index 0000000000000000000000000000000000000000..5261731d4a8c916d74c5c3f4d3bc9e99a1d1891d
--- /dev/null
+++ b/build/hc_swigfaiss.log
@@ -0,0 +1,66 @@
+/usr/bin/cmake3 -S/home/huchen/FAISS/faiss -B/home/huchen/FAISS/faiss/build --check-build-system CMakeFiles/Makefile.cmake 0
+make  -f CMakeFiles/Makefile2 swigfaiss
+make[1]: Entering directory '/home/huchen/FAISS/faiss/build'
+/usr/bin/cmake3 -S/home/huchen/FAISS/faiss -B/home/huchen/FAISS/faiss/build --check-build-system CMakeFiles/Makefile.cmake 0
+/usr/bin/cmake3 -E cmake_progress_start /home/huchen/FAISS/faiss/build/CMakeFiles 41
+make  -f CMakeFiles/Makefile2 faiss/python/CMakeFiles/swigfaiss.dir/all
+make[2]: Entering directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/python/CMakeFiles/faiss_python_callbacks.dir/build.make faiss/python/CMakeFiles/faiss_python_callbacks.dir/depend
+make  -f faiss/CMakeFiles/faiss.dir/build.make faiss/CMakeFiles/faiss.dir/depend
+make[3]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss/python /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss/python /home/huchen/FAISS/faiss/build/faiss/python/CMakeFiles/faiss_python_callbacks.dir/DependInfo.cmake --color=
+make  -f faiss/python/CMakeFiles/swigfaiss_swig_compilation.dir/build.make faiss/python/CMakeFiles/swigfaiss_swig_compilation.dir/depend
+make[3]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss/python /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss/python /home/huchen/FAISS/faiss/build/faiss/python/CMakeFiles/swigfaiss_swig_compilation.dir/DependInfo.cmake --color=
+Dependee "/home/huchen/FAISS/faiss/build/faiss/python/CMakeFiles/faiss_python_callbacks.dir/DependInfo.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/python/CMakeFiles/faiss_python_callbacks.dir/depend.internal".
+Dependee "/home/huchen/FAISS/faiss/build/faiss/python/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/python/CMakeFiles/faiss_python_callbacks.dir/depend.internal".
+make[3]: Entering directory '/home/huchen/FAISS/faiss/build'
+cd /home/huchen/FAISS/faiss/build && /usr/bin/cmake3 -E cmake_depends "Unix Makefiles" /home/huchen/FAISS/faiss /home/huchen/FAISS/faiss/faiss /home/huchen/FAISS/faiss/build /home/huchen/FAISS/faiss/build/faiss /home/huchen/FAISS/faiss/build/faiss/CMakeFiles/faiss.dir/DependInfo.cmake --color=
+Dependee "/home/huchen/FAISS/faiss/build/faiss/python/CMakeFiles/swigfaiss_swig_compilation.dir/DependInfo.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/python/CMakeFiles/swigfaiss_swig_compilation.dir/depend.internal".
+Dependee "/home/huchen/FAISS/faiss/build/faiss/python/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/huchen/FAISS/faiss/build/faiss/python/CMakeFiles/swigfaiss_swig_compilation.dir/depend.internal".
+Scanning dependencies of target swigfaiss_swig_compilation
+make[3]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/python/CMakeFiles/swigfaiss_swig_compilation.dir/build.make faiss/python/CMakeFiles/swigfaiss_swig_compilation.dir/build
+make[3]: Entering directory '/home/huchen/FAISS/faiss/build'
+Scanning dependencies of target faiss_python_callbacks
+make[3]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/python/CMakeFiles/faiss_python_callbacks.dir/build.make faiss/python/CMakeFiles/faiss_python_callbacks.dir/build
+make[3]: Entering directory '/home/huchen/FAISS/faiss/build'
+make[3]: Leaving directory '/home/huchen/FAISS/faiss/build'
+make  -f faiss/CMakeFiles/faiss.dir/build.make faiss/CMakeFiles/faiss.dir/build
+[  2%] Swig compile swigfaiss.swig for python
+cd /home/huchen/FAISS/faiss/build/faiss/python && /usr/bin/cmake3 -E make_directory /home/huchen/FAISS/faiss/build/faiss/python /home/huchen/FAISS/faiss/build/faiss/python/CMakeFiles/swigfaiss.dir
+[  2%] Building CXX object faiss/python/CMakeFiles/faiss_python_callbacks.dir/python_callbacks.cpp.o
+cd /home/huchen/FAISS/faiss/build/faiss/python && /opt/dtk-21.04/bin/hipcc  -Dfaiss_python_callbacks_EXPORTS -I/home/huchen/FAISS/faiss/faiss/python/../.. -I/usr/include/python3.6m  -fPIC   -std=gnu++11 -o CMakeFiles/faiss_python_callbacks.dir/python_callbacks.cpp.o -c /home/huchen/FAISS/faiss/faiss/python/python_callbacks.cpp
+make[3]: Entering directory '/home/huchen/FAISS/faiss/build'
+make[3]: Nothing to be done for 'faiss/CMakeFiles/faiss.dir/build'.
+make[3]: Leaving directory '/home/huchen/FAISS/faiss/build'
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+help:
+	@echo "The following are some of the valid targets for this Makefile:"
+	@echo "... all (the default if no target is provided)"
+	@echo "... clean"
+	@echo "... depend"
+	@echo "... edit_cache"
+	@echo "... install"
+	@echo "... install/local"
+	@echo "... install/strip"
+	@echo "... list_install_components"
+	@echo "... rebuild_cache"
+	@echo "... test"
+	@echo "... faiss_test"
+	@echo "... test_binary_flat.o"
+	@echo "... test_binary_flat.i"
+	@echo "... test_binary_flat.s"
+	@echo "... test_dealloc_invlists.o"
+	@echo "... test_dealloc_invlists.i"
+	@echo "... test_dealloc_invlists.s"
+	@echo "... test_ivfpq_codec.o"
+	@echo "... test_ivfpq_codec.i"
+	@echo "... test_ivfpq_codec.s"
+	@echo "... test_ivfpq_indexing.o"
+	@echo "... test_ivfpq_indexing.i"
+	@echo "... test_ivfpq_indexing.s"
+	@echo "... test_lowlevel_ivf.o"
+	@echo "... test_lowlevel_ivf.i"
+	@echo "... test_lowlevel_ivf.s"
+	@echo "... test_mem_leak.o"
+	@echo "... test_mem_leak.i"
+	@echo "... test_mem_leak.s"
+	@echo "... test_merge.o"
+	@echo "... test_merge.i"
+	@echo "... test_merge.s"
+	@echo "... test_omp_threads.o"
+	@echo "... test_omp_threads.i"
+	@echo "... test_omp_threads.s"
+	@echo "... test_ondisk_ivf.o"
+	@echo "... test_ondisk_ivf.i"
+	@echo "... test_ondisk_ivf.s"
+	@echo "... test_pairs_decoding.o"
+	@echo "... test_pairs_decoding.i"
+	@echo "... test_pairs_decoding.s"
+	@echo "... test_params_override.o"
+	@echo "... test_params_override.i"
+	@echo "... test_params_override.s"
+	@echo "... test_pq_encoding.o"
+	@echo "... test_pq_encoding.i"
+	@echo "... test_pq_encoding.s"
+	@echo "... test_sliding_ivf.o"
+	@echo "... test_sliding_ivf.i"
+	@echo "... test_sliding_ivf.s"
+	@echo "... test_threaded_index.o"
+	@echo "... test_threaded_index.i"
+	@echo "... test_threaded_index.s"
+	@echo "... test_transfer_invlists.o"
+	@echo "... test_transfer_invlists.i"
+	@echo "... test_transfer_invlists.s"
+.PHONY : help
+
+
+
+#=============================================================================
+# Special targets to cleanup operation of make.
+
+# Special rule to run CMake to check the build system integrity.
+# No rule that depends on this can have commands that come from listfiles
+# because they might be regenerated.
+cmake_check_build_system:
+	cd /home/huchen/FAISS/faiss/build && $(CMAKE_COMMAND) -S$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR) --check-build-system CMakeFiles/Makefile.cmake 0
+.PHONY : cmake_check_build_system
+
diff --git a/build/tests/cmake_install.cmake b/build/tests/cmake_install.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..bbd3fc812a8be0cdf7a41743e9ab4359c53bcfc6
--- /dev/null
+++ b/build/tests/cmake_install.cmake
@@ -0,0 +1,44 @@
+# Install script for directory: /home/huchen/FAISS/faiss/tests
+
+# Set the install prefix
+if(NOT DEFINED CMAKE_INSTALL_PREFIX)
+  set(CMAKE_INSTALL_PREFIX "/usr/local")
+endif()
+string(REGEX REPLACE "/$" "" CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
+
+# Set the install configuration name.
+if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME)
+  if(BUILD_TYPE)
+    string(REGEX REPLACE "^[^A-Za-z0-9_]+" ""
+           CMAKE_INSTALL_CONFIG_NAME "${BUILD_TYPE}")
+  else()
+    set(CMAKE_INSTALL_CONFIG_NAME "")
+  endif()
+  message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"")
+endif()
+
+# Set the component getting installed.
+if(NOT CMAKE_INSTALL_COMPONENT)
+  if(COMPONENT)
+    message(STATUS "Install component: \"${COMPONENT}\"")
+    set(CMAKE_INSTALL_COMPONENT "${COMPONENT}")
+  else()
+    set(CMAKE_INSTALL_COMPONENT)
+  endif()
+endif()
+
+# Install shared libraries without execute permission?
+if(NOT DEFINED CMAKE_INSTALL_SO_NO_EXE)
+  set(CMAKE_INSTALL_SO_NO_EXE "0")
+endif()
+
+# Is this installation the result of a crosscompile?
+if(NOT DEFINED CMAKE_CROSSCOMPILING)
+  set(CMAKE_CROSSCOMPILING "FALSE")
+endif()
+
+if(NOT CMAKE_INSTALL_LOCAL_ONLY)
+  # Include the install script for the subdirectory.
+  include("/home/huchen/FAISS/faiss/build/_deps/googletest-build/cmake_install.cmake")
+endif()
+
diff --git a/build/tests/faiss_test b/build/tests/faiss_test
new file mode 100755
index 0000000000000000000000000000000000000000..06db0fbcb360a07212c5ab20a17932fa5fbafef8
Binary files /dev/null and b/build/tests/faiss_test differ
diff --git a/build/tests/faiss_test[1]_include.cmake b/build/tests/faiss_test[1]_include.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..9d8026bac73f813d0c5dc59125c7b1df96de830c
--- /dev/null
+++ b/build/tests/faiss_test[1]_include.cmake
@@ -0,0 +1,5 @@
+if(EXISTS "/home/huchen/FAISS/faiss/build/tests/faiss_test[1]_tests.cmake")
+  include("/home/huchen/FAISS/faiss/build/tests/faiss_test[1]_tests.cmake")
+else()
+  add_test(faiss_test_NOT_BUILT faiss_test_NOT_BUILT)
+endif()
diff --git a/build/tests/faiss_test[1]_tests.cmake b/build/tests/faiss_test[1]_tests.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..374a624e999f6ea9d852e77d61171f1ee2e61b52
--- /dev/null
+++ b/build/tests/faiss_test[1]_tests.cmake
@@ -0,0 +1,95 @@
+add_test( BinaryFlat.accuracy /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=BinaryFlat.accuracy]==] --gtest_also_run_disabled_tests)
+set_tests_properties( BinaryFlat.accuracy PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TestIvlistDealloc.IVFFlat /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TestIvlistDealloc.IVFFlat]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestIvlistDealloc.IVFFlat PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TestIvlistDealloc.IVFSQ /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TestIvlistDealloc.IVFSQ]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestIvlistDealloc.IVFSQ PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TestIvlistDealloc.IVFPQ /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TestIvlistDealloc.IVFPQ]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestIvlistDealloc.IVFPQ PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( IVFPQ.codec /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=IVFPQ.codec]==] --gtest_also_run_disabled_tests)
+set_tests_properties( IVFPQ.codec PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( IVFPQ.accuracy /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=IVFPQ.accuracy]==] --gtest_also_run_disabled_tests)
+set_tests_properties( IVFPQ.accuracy PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TestLowLevelIVF.IVFFlatL2 /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TestLowLevelIVF.IVFFlatL2]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestLowLevelIVF.IVFFlatL2 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TestLowLevelIVF.PCAIVFFlatL2 /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TestLowLevelIVF.PCAIVFFlatL2]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestLowLevelIVF.PCAIVFFlatL2 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TestLowLevelIVF.IVFFlatIP /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TestLowLevelIVF.IVFFlatIP]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestLowLevelIVF.IVFFlatIP PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TestLowLevelIVF.IVFSQL2 /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TestLowLevelIVF.IVFSQL2]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestLowLevelIVF.IVFSQL2 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TestLowLevelIVF.IVFSQIP /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TestLowLevelIVF.IVFSQIP]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestLowLevelIVF.IVFSQIP PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TestLowLevelIVF.IVFPQL2 /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TestLowLevelIVF.IVFPQL2]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestLowLevelIVF.IVFPQL2 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TestLowLevelIVF.IVFPQIP /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TestLowLevelIVF.IVFPQIP]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestLowLevelIVF.IVFPQIP PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TestLowLevelIVF.IVFBinary /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TestLowLevelIVF.IVFBinary]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestLowLevelIVF.IVFBinary PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TestLowLevelIVF.ThreadedSearch /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TestLowLevelIVF.ThreadedSearch]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TestLowLevelIVF.ThreadedSearch PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( MERGE.merge_flat_no_ids /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=MERGE.merge_flat_no_ids]==] --gtest_also_run_disabled_tests)
+set_tests_properties( MERGE.merge_flat_no_ids PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( MERGE.merge_flat /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=MERGE.merge_flat]==] --gtest_also_run_disabled_tests)
+set_tests_properties( MERGE.merge_flat PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( MERGE.merge_flat_vt /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=MERGE.merge_flat_vt]==] --gtest_also_run_disabled_tests)
+set_tests_properties( MERGE.merge_flat_vt PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( MERGE.merge_flat_ondisk /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=MERGE.merge_flat_ondisk]==] --gtest_also_run_disabled_tests)
+set_tests_properties( MERGE.merge_flat_ondisk PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( MERGE.merge_flat_ondisk_2 /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=MERGE.merge_flat_ondisk_2]==] --gtest_also_run_disabled_tests)
+set_tests_properties( MERGE.merge_flat_ondisk_2 PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( Threading.openmp /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=Threading.openmp]==] --gtest_also_run_disabled_tests)
+set_tests_properties( Threading.openmp PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( ONDISK.make_invlists /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=ONDISK.make_invlists]==] --gtest_also_run_disabled_tests)
+set_tests_properties( ONDISK.make_invlists PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( ONDISK.test_add /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=ONDISK.test_add]==] --gtest_also_run_disabled_tests)
+set_tests_properties( ONDISK.test_add PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( ONDISK.make_invlists_threaded /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=ONDISK.make_invlists_threaded]==] --gtest_also_run_disabled_tests)
+set_tests_properties( ONDISK.make_invlists_threaded PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( test_search_centroid.IVFFlat /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=test_search_centroid.IVFFlat]==] --gtest_also_run_disabled_tests)
+set_tests_properties( test_search_centroid.IVFFlat PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( test_search_centroid.PCAIVFFlat /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=test_search_centroid.PCAIVFFlat]==] --gtest_also_run_disabled_tests)
+set_tests_properties( test_search_centroid.PCAIVFFlat PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( test_search_and_return_centroids.IVFFlat /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=test_search_and_return_centroids.IVFFlat]==] --gtest_also_run_disabled_tests)
+set_tests_properties( test_search_and_return_centroids.IVFFlat PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( test_search_and_return_centroids.PCAIVFFlat /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=test_search_and_return_centroids.PCAIVFFlat]==] --gtest_also_run_disabled_tests)
+set_tests_properties( test_search_and_return_centroids.PCAIVFFlat PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TPO.IVFFlat /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TPO.IVFFlat]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TPO.IVFFlat PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TPO.IVFPQ /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TPO.IVFPQ]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TPO.IVFPQ PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TPO.IVFSQ /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TPO.IVFSQ]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TPO.IVFSQ PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TPO.IVFFlatPP /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TPO.IVFFlatPP]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TPO.IVFFlatPP PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TPOB.IVF /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TPOB.IVF]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TPOB.IVF PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( PQEncoderGeneric.encode /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=PQEncoderGeneric.encode]==] --gtest_also_run_disabled_tests)
+set_tests_properties( PQEncoderGeneric.encode PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( PQEncoder8.encode /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=PQEncoder8.encode]==] --gtest_also_run_disabled_tests)
+set_tests_properties( PQEncoder8.encode PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( PQEncoder16.encode /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=PQEncoder16.encode]==] --gtest_also_run_disabled_tests)
+set_tests_properties( PQEncoder16.encode PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( SlidingWindow.IVFFlat /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=SlidingWindow.IVFFlat]==] --gtest_also_run_disabled_tests)
+set_tests_properties( SlidingWindow.IVFFlat PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( SlidingWindow.PCAIVFFlat /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=SlidingWindow.PCAIVFFlat]==] --gtest_also_run_disabled_tests)
+set_tests_properties( SlidingWindow.PCAIVFFlat PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( SlidingInvlists.IVFFlat /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=SlidingInvlists.IVFFlat]==] --gtest_also_run_disabled_tests)
+set_tests_properties( SlidingInvlists.IVFFlat PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( SlidingInvlists.PCAIVFFlat /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=SlidingInvlists.PCAIVFFlat]==] --gtest_also_run_disabled_tests)
+set_tests_properties( SlidingInvlists.PCAIVFFlat PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( ThreadedIndex.SingleException /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=ThreadedIndex.SingleException]==] --gtest_also_run_disabled_tests)
+set_tests_properties( ThreadedIndex.SingleException PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( ThreadedIndex.MultipleException /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=ThreadedIndex.MultipleException]==] --gtest_also_run_disabled_tests)
+set_tests_properties( ThreadedIndex.MultipleException PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( ThreadedIndex.TestReplica /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=ThreadedIndex.TestReplica]==] --gtest_also_run_disabled_tests)
+set_tests_properties( ThreadedIndex.TestReplica PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( ThreadedIndex.TestShards /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=ThreadedIndex.TestShards]==] --gtest_also_run_disabled_tests)
+set_tests_properties( ThreadedIndex.TestShards PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TRANS.IVFFlat /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TRANS.IVFFlat]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TRANS.IVFFlat PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( TRANS.IVFFlatPreproc /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=TRANS.IVFFlatPreproc]==] --gtest_also_run_disabled_tests)
+set_tests_properties( TRANS.IVFFlatPreproc PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+add_test( MEM_LEAK.ivfflat /home/huchen/FAISS/faiss/build/tests/faiss_test [==[--gtest_filter=MEM_LEAK.ivfflat]==] --gtest_also_run_disabled_tests)
+set_tests_properties( MEM_LEAK.ivfflat PROPERTIES WORKING_DIRECTORY /home/huchen/FAISS/faiss/build/tests)
+set( faiss_test_TESTS BinaryFlat.accuracy TestIvlistDealloc.IVFFlat TestIvlistDealloc.IVFSQ TestIvlistDealloc.IVFPQ IVFPQ.codec IVFPQ.accuracy TestLowLevelIVF.IVFFlatL2 TestLowLevelIVF.PCAIVFFlatL2 TestLowLevelIVF.IVFFlatIP TestLowLevelIVF.IVFSQL2 TestLowLevelIVF.IVFSQIP TestLowLevelIVF.IVFPQL2 TestLowLevelIVF.IVFPQIP TestLowLevelIVF.IVFBinary TestLowLevelIVF.ThreadedSearch MERGE.merge_flat_no_ids MERGE.merge_flat MERGE.merge_flat_vt MERGE.merge_flat_ondisk MERGE.merge_flat_ondisk_2 Threading.openmp ONDISK.make_invlists ONDISK.test_add ONDISK.make_invlists_threaded test_search_centroid.IVFFlat test_search_centroid.PCAIVFFlat test_search_and_return_centroids.IVFFlat test_search_and_return_centroids.PCAIVFFlat TPO.IVFFlat TPO.IVFPQ TPO.IVFSQ TPO.IVFFlatPP TPOB.IVF PQEncoderGeneric.encode PQEncoder8.encode PQEncoder16.encode SlidingWindow.IVFFlat SlidingWindow.PCAIVFFlat SlidingInvlists.IVFFlat SlidingInvlists.PCAIVFFlat ThreadedIndex.SingleException ThreadedIndex.MultipleException ThreadedIndex.TestReplica ThreadedIndex.TestShards TRANS.IVFFlat TRANS.IVFFlatPreproc MEM_LEAK.ivfflat)
diff --git a/build/tutorial/cpp/CMakeFiles/1-Flat.dir/DependInfo.cmake b/build/tutorial/cpp/CMakeFiles/1-Flat.dir/DependInfo.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..c8e955ddff849cf87df9b87edceec189ac065476
--- /dev/null
+++ b/build/tutorial/cpp/CMakeFiles/1-Flat.dir/DependInfo.cmake
@@ -0,0 +1,22 @@
+# The set of languages for which implicit dependencies are needed:
+set(CMAKE_DEPENDS_LANGUAGES
+  "CXX"
+  )
+# The set of files for implicit dependencies of each language:
+set(CMAKE_DEPENDS_CHECK_CXX
+  "/home/huchen/FAISS/faiss/tutorial/cpp/1-Flat.cpp" "/home/huchen/FAISS/faiss/build/tutorial/cpp/CMakeFiles/1-Flat.dir/1-Flat.cpp.o"
+  )
+set(CMAKE_CXX_COMPILER_ID "Clang")
+
+# The include file search paths:
+set(CMAKE_CXX_TARGET_INCLUDE_PATH
+  "../"
+  )
+
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+	cd /home/huchen/FAISS/faiss/build && $(MAKE) $(MAKESILENT) -f tutorial/cpp/CMakeFiles/4-GPU.dir/build.make tutorial/cpp/CMakeFiles/4-GPU.dir/4-GPU.cpp.o
+.PHONY : 4-GPU.cpp.o
+
+4-GPU.i: 4-GPU.cpp.i
+
+.PHONY : 4-GPU.i
+
+# target to preprocess a source file
+4-GPU.cpp.i:
+	cd /home/huchen/FAISS/faiss/build && $(MAKE) $(MAKESILENT) -f tutorial/cpp/CMakeFiles/4-GPU.dir/build.make tutorial/cpp/CMakeFiles/4-GPU.dir/4-GPU.cpp.i
+.PHONY : 4-GPU.cpp.i
+
+4-GPU.s: 4-GPU.cpp.s
+
+.PHONY : 4-GPU.s
+
+# target to generate assembly for a file
+4-GPU.cpp.s:
+	cd /home/huchen/FAISS/faiss/build && $(MAKE) $(MAKESILENT) -f tutorial/cpp/CMakeFiles/4-GPU.dir/build.make tutorial/cpp/CMakeFiles/4-GPU.dir/4-GPU.cpp.s
+.PHONY : 4-GPU.cpp.s
+
+5-Multiple-GPUs.o: 5-Multiple-GPUs.cpp.o
+
+.PHONY : 5-Multiple-GPUs.o
+
+# target to build an object file
+5-Multiple-GPUs.cpp.o:
+	cd /home/huchen/FAISS/faiss/build && $(MAKE) $(MAKESILENT) -f tutorial/cpp/CMakeFiles/5-Multiple-GPUs.dir/build.make tutorial/cpp/CMakeFiles/5-Multiple-GPUs.dir/5-Multiple-GPUs.cpp.o
+.PHONY : 5-Multiple-GPUs.cpp.o
+
+5-Multiple-GPUs.i: 5-Multiple-GPUs.cpp.i
+
+.PHONY : 5-Multiple-GPUs.i
+
+# target to preprocess a source file
+5-Multiple-GPUs.cpp.i:
+	cd /home/huchen/FAISS/faiss/build && $(MAKE) $(MAKESILENT) -f tutorial/cpp/CMakeFiles/5-Multiple-GPUs.dir/build.make tutorial/cpp/CMakeFiles/5-Multiple-GPUs.dir/5-Multiple-GPUs.cpp.i
+.PHONY : 5-Multiple-GPUs.cpp.i
+
+5-Multiple-GPUs.s: 5-Multiple-GPUs.cpp.s
+
+.PHONY : 5-Multiple-GPUs.s
+
+# target to generate assembly for a file
+5-Multiple-GPUs.cpp.s:
+	cd /home/huchen/FAISS/faiss/build && $(MAKE) $(MAKESILENT) -f tutorial/cpp/CMakeFiles/5-Multiple-GPUs.dir/build.make tutorial/cpp/CMakeFiles/5-Multiple-GPUs.dir/5-Multiple-GPUs.cpp.s
+.PHONY : 5-Multiple-GPUs.cpp.s
+
+# Help Target
+help:
+	@echo "The following are some of the valid targets for this Makefile:"
+	@echo "... all (the default if no target is provided)"
+	@echo "... clean"
+	@echo "... depend"
+	@echo "... edit_cache"
+	@echo "... install"
+	@echo "... install/local"
+	@echo "... install/strip"
+	@echo "... list_install_components"
+	@echo "... rebuild_cache"
+	@echo "... test"
+	@echo "... 1-Flat"
+	@echo "... 2-IVFFlat"
+	@echo "... 3-IVFPQ"
+	@echo "... 4-GPU"
+	@echo "... 5-Multiple-GPUs"
+	@echo "... 1-Flat.o"
+	@echo "... 1-Flat.i"
+	@echo "... 1-Flat.s"
+	@echo "... 2-IVFFlat.o"
+	@echo "... 2-IVFFlat.i"
+	@echo "... 2-IVFFlat.s"
+	@echo "... 3-IVFPQ.o"
+	@echo "... 3-IVFPQ.i"
+	@echo "... 3-IVFPQ.s"
+	@echo "... 4-GPU.o"
+	@echo "... 4-GPU.i"
+	@echo "... 4-GPU.s"
+	@echo "... 5-Multiple-GPUs.o"
+	@echo "... 5-Multiple-GPUs.i"
+	@echo "... 5-Multiple-GPUs.s"
+.PHONY : help
+
+
+
+#=============================================================================
+# Special targets to cleanup operation of make.
+
+# Special rule to run CMake to check the build system integrity.
+# No rule that depends on this can have commands that come from listfiles
+# because they might be regenerated.
+cmake_check_build_system:
+	cd /home/huchen/FAISS/faiss/build && $(CMAKE_COMMAND) -S$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR) --check-build-system CMakeFiles/Makefile.cmake 0
+.PHONY : cmake_check_build_system
+
diff --git a/build/tutorial/cpp/cmake_install.cmake b/build/tutorial/cpp/cmake_install.cmake
new file mode 100644
index 0000000000000000000000000000000000000000..510bdd9eaa1f6a9a74fa8533d184cdf2639b1f33
--- /dev/null
+++ b/build/tutorial/cpp/cmake_install.cmake
@@ -0,0 +1,39 @@
+# Install script for directory: /home/huchen/FAISS/faiss/tutorial/cpp
+
+# Set the install prefix
+if(NOT DEFINED CMAKE_INSTALL_PREFIX)
+  set(CMAKE_INSTALL_PREFIX "/usr/local")
+endif()
+string(REGEX REPLACE "/$" "" CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
+
+# Set the install configuration name.
+if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME)
+  if(BUILD_TYPE)
+    string(REGEX REPLACE "^[^A-Za-z0-9_]+" ""
+           CMAKE_INSTALL_CONFIG_NAME "${BUILD_TYPE}")
+  else()
+    set(CMAKE_INSTALL_CONFIG_NAME "")
+  endif()
+  message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"")
+endif()
+
+# Set the component getting installed.
+if(NOT CMAKE_INSTALL_COMPONENT)
+  if(COMPONENT)
+    message(STATUS "Install component: \"${COMPONENT}\"")
+    set(CMAKE_INSTALL_COMPONENT "${COMPONENT}")
+  else()
+    set(CMAKE_INSTALL_COMPONENT)
+  endif()
+endif()
+
+# Install shared libraries without execute permission?
+if(NOT DEFINED CMAKE_INSTALL_SO_NO_EXE)
+  set(CMAKE_INSTALL_SO_NO_EXE "0")
+endif()
+
+# Is this installation the result of a crosscompile?
+if(NOT DEFINED CMAKE_CROSSCOMPILING)
+  set(CMAKE_CROSSCOMPILING "FALSE")
+endif()
+
diff --git a/compile.sh b/compile.sh
index 6e70740322fbf6d05d3339c9da884c9daf5e3689..a34d05451084ff48bcb92b7900e3c7ec8dee6ede 100755
--- a/compile.sh
+++ b/compile.sh
@@ -1,8 +1,19 @@
 cd build;
+rm hc_* -f
 export CPLUS_INCLUDE_PATH=/opt/dtk-21.04/include:/opt/dtk-21.04:/opencl/include
 export LD_LIBRARY_PATH=/home/huchen/intel-compiler-2017.5.239/mkl/lib/intel64_lin/:$LD_LIBRARY_PATH
 export PATH=/home/huchen/FAISS/swig-4.0.2-build/bin/:$PATH
 export CPLUS_INCLUDE_PATH=/opt/dtk-21.04/hiprand/include/:/opt/dtk-21.04/rocrand/include:$CPLUS_INCLUDE_PATH
-CXX=hipcc CC=hipcc cmake3 -DFAISS_ENABLE_GPU=ON -DFAISS_OPT_LEVEL=sse4 -DBUILD_SHARED_LIBS=ON -DCMAKE_MODULE_PATH=${ROCM_PATH}/hip/cmake/ -DMKL_LIBRARIES=/home/huchen/intel-compiler-2017.5.239/mkl/lib/intel64_lin/  ..
+export LD_LIBRARY_PATH=/opt/dtk-21.04/hipblas/lib/:$LD_LIBRARY_PATH
+export LD_LIBRARY_PATH=/opt/dtk-21.04/llvm/lib:$LD_LIBRARY_PATH
+#CXX=hipcc CC=hipcc cmake3 -DFAISS_ENABLE_GPU=ON -DFAISS_OPT_LEVEL=sse4 -DBUILD_SHARED_LIBS=ON -DCMAKE_MODULE_PATH=${ROCM_PATH}/hip/cmake/ -DMKL_LIBRARIES=/home/huchen/intel-compiler-2017.5.239/mkl/lib/intel64_lin/  ..
+CXX=hipcc CC=hipcc cmake3 -DFAISS_ENABLE_GPU=ON -DFAISS_OPT_LEVEL=sse4 -DBUILD_SHARED_LIBS=ON -DCMAKE_MODULE_PATH=${ROCM_PATH}/hip/cmake/ ..
 make -j faiss VERBOSE=1 > hc_faiss.log 2>&1 
+make -j swigfaiss VERBOSE=1 > hc_swigfaiss.log 2>&1 
+
+export LD_LIBRARY_PATH=/home/huchen/FAISS/faiss/build/faiss/gpu/test/:/home/huchen/FAISS/faiss/build/faiss/:/home/huchen/FAISS/faiss/build/lib/:$LD_LIBRARY_PATH
+make install VERBOSE=1 > hc_install.log 2>&1 
+#make test VERBOSE=1 > hc_test.log 2>&1
 cd -
+
+./test_gpu.sh
diff --git a/faiss/CMakeLists.txt b/faiss/CMakeLists.txt
index 1fbc8492bb86fde36b0dbdbc8366fbe2048ac9ea..831e323147ebc4fb001918086f429f9ed7a9e1bf 100644
--- a/faiss/CMakeLists.txt
+++ b/faiss/CMakeLists.txt
@@ -176,7 +176,9 @@ endif()
 # Export FAISS_HEADERS variable to parent scope.
 set(FAISS_HEADERS ${FAISS_HEADERS} PARENT_SCOPE)
 
-add_library(faiss ${FAISS_SRC})
+# HC
+find_package(HIP)
+hip_add_library(faiss ${FAISS_SRC})
 
 add_library(faiss_avx2 ${FAISS_SRC})
 if(NOT FAISS_OPT_LEVEL STREQUAL "avx2")
diff --git a/faiss/gpu/CMakeLists.txt b/faiss/gpu/CMakeLists.txt
index 98006b5dae951f7dfd3ee09632f706b38348348e..91c7fe913cfd1d2870c143d7d568bf6f7a0d4c02 100644
--- a/faiss/gpu/CMakeLists.txt
+++ b/faiss/gpu/CMakeLists.txt
@@ -8,8 +8,7 @@ set(FAISS_GPU_SRC
   GpuAutoTune.cpp
   GpuCloner.cpp
   GpuClonerOptions.cpp
-  # HC
-  #GpuDistance.cu
+  GpuDistance.cu
   GpuIcmEncoder.cu
   GpuIndex.cu
   GpuIndexBinaryFlat.cu
@@ -17,72 +16,66 @@ set(FAISS_GPU_SRC
   GpuIndexIVF.cu
   GpuIndexIVFFlat.cu
   GpuIndexIVFPQ.cu
-  # HC
-  #GpuIndexIVFScalarQuantizer.cu
+  GpuIndexIVFScalarQuantizer.cu
   GpuResources.cpp
   StandardGpuResources.cpp
-  # HC
-  #impl/BinaryDistance.cu
+  impl/BinaryDistance.cu
   impl/BinaryFlatIndex.cu
   impl/BroadcastSum.cu
   impl/Distance.cu
-  # HC
-  #impl/FlatIndex.cu
+  impl/FlatIndex.cu
   impl/IVFAppend.cu
   impl/IVFBase.cu
   impl/IVFFlat.cu
   impl/IVFFlatScan.cu
-  # HC
-  #impl/IVFInterleaved.cu
-  #impl/IVFPQ.cu
+  impl/IVFInterleaved.cu
+  impl/IVFPQ.cu
   impl/IVFUtils.cu
-  #impl/IVFUtilsSelect1.cu
-  #impl/IVFUtilsSelect2.cu
+  impl/IVFUtilsSelect1.cu
+  impl/IVFUtilsSelect2.cu
   impl/InterleavedCodes.cpp
-  # HC
-  #impl/L2Norm.cu
-  #impl/L2Select.cu
-  #impl/PQScanMultiPassPrecomputed.cu
+  impl/L2Norm.cu
+  impl/L2Select.cu
+  impl/PQScanMultiPassPrecomputed.cu
   impl/RemapIndices.cpp
   impl/VectorResidual.cu
+  impl/scan/IVFInterleaved1.cu
+  impl/scan/IVFInterleaved32.cu
+  impl/scan/IVFInterleaved64.cu
+  impl/scan/IVFInterleaved128.cu
+  impl/scan/IVFInterleaved256.cu
+  impl/scan/IVFInterleaved512.cu
+  impl/scan/IVFInterleaved1024.cu
+  impl/scan/IVFInterleaved2048.cu
   # HC
-  #impl/scan/IVFInterleaved1.cu
-  #impl/scan/IVFInterleaved32.cu
-  #impl/scan/IVFInterleaved64.cu
-  #impl/scan/IVFInterleaved128.cu
-  #impl/scan/IVFInterleaved256.cu
-  #impl/scan/IVFInterleaved512.cu
-  #impl/scan/IVFInterleaved1024.cu
-  #impl/scan/IVFInterleaved2048.cu
-  #impl/IcmEncoder.cu
-  #utils/BlockSelectFloat.cu
+  impl/IcmEncoder.cu
+  utils/BlockSelectFloat.cu
   utils/DeviceUtils.cu
   utils/StackDeviceMemory.cpp
   utils/Timer.cpp
   utils/WarpSelectFloat.cu
-  # HC
-  #utils/blockselect/BlockSelectFloat1.cu
-  #utils/blockselect/BlockSelectFloat32.cu
-  #utils/blockselect/BlockSelectFloat64.cu
-  #utils/blockselect/BlockSelectFloat128.cu
-  #utils/blockselect/BlockSelectFloat256.cu
-  #utils/blockselect/BlockSelectFloatF512.cu
-  #utils/blockselect/BlockSelectFloatF1024.cu
-  #utils/blockselect/BlockSelectFloatF2048.cu
-  #utils/blockselect/BlockSelectFloatT512.cu
-  #utils/blockselect/BlockSelectFloatT1024.cu
-  #utils/blockselect/BlockSelectFloatT2048.cu
-  #utils/warpselect/WarpSelectFloat1.cu
-  #utils/warpselect/WarpSelectFloat32.cu
-  #utils/warpselect/WarpSelectFloat64.cu
-  #utils/warpselect/WarpSelectFloat128.cu
-  #utils/warpselect/WarpSelectFloat256.cu
-  #utils/warpselect/WarpSelectFloatF512.cu
-  #utils/warpselect/WarpSelectFloatF1024.cu
-  #utils/warpselect/WarpSelectFloatF2048.cu
-  #utils/warpselect/WarpSelectFloatT512.cu
-  #utils/warpselect/WarpSelectFloatT1024.cu
-  #utils/warpselect/WarpSelectFloatT2048.cu
+  utils/blockselect/BlockSelectFloat1.cu
+  utils/blockselect/BlockSelectFloat32.cu
+  utils/blockselect/BlockSelectFloat64.cu
+  utils/blockselect/BlockSelectFloat128.cu
+  utils/blockselect/BlockSelectFloat256.cu
+  utils/blockselect/BlockSelectFloatF512.cu
+  utils/blockselect/BlockSelectFloatF1024.cu
+  utils/blockselect/BlockSelectFloatF2048.cu
+  utils/blockselect/BlockSelectFloatT512.cu
+  utils/blockselect/BlockSelectFloatT1024.cu
+  utils/blockselect/BlockSelectFloatT2048.cu
+  utils/warpselect/WarpSelectFloat1.cu
+  utils/warpselect/WarpSelectFloat32.cu
+  utils/warpselect/WarpSelectFloat64.cu
+  utils/warpselect/WarpSelectFloat128.cu
+  utils/warpselect/WarpSelectFloat256.cu
+  utils/warpselect/WarpSelectFloatF512.cu
+  utils/warpselect/WarpSelectFloatF1024.cu
+  utils/warpselect/WarpSelectFloatF2048.cu
+  utils/warpselect/WarpSelectFloatT512.cu
+  utils/warpselect/WarpSelectFloatT1024.cu
+  utils/warpselect/WarpSelectFloatT2048.cu
 )
 
 set(FAISS_GPU_HEADERS
@@ -184,9 +177,11 @@ foreach(header ${FAISS_GPU_HEADERS})
 endforeach()
 
 # HC
-#find_package(CUDAToolkit REQUIRED)
-target_link_libraries(faiss)
-target_link_libraries(faiss_avx2)
-#target_link_libraries(faiss_avx2 PRIVATE hipblas)
+find_package(HIP)
+#target_link_libraries(faiss)
+#target_link_libraries(faiss_avx2)
+#link_directories(/opt/dtk-21.04/hipblas/lib/)
+target_link_libraries(faiss PRIVATE /opt/dtk-21.04/hipblas/lib/libhipblas.so.0)
+target_link_libraries(faiss_avx2 PRIVATE /opt/dtk-21.04/hipblas/lib/libhipblas.so.0)
 #target_compile_options(faiss PRIVATE $<$<COMPILE_LANGUAGE:CUDA>:-Xfatbin=-compress-all>)
 #target_compile_options(faiss_avx2 PRIVATE $<$<COMPILE_LANGUAGE:CUDA>:-Xfatbin=-compress-all>)
diff --git a/faiss/gpu/StandardGpuResources.cpp b/faiss/gpu/StandardGpuResources.cpp
index 661c035243affbec9e13cc28527ddd39777b6fbb..f46e8126603c7dc918ac68c59e7ed4ff0aa28485 100644
--- a/faiss/gpu/StandardGpuResources.cpp
+++ b/faiss/gpu/StandardGpuResources.cpp
@@ -301,8 +301,9 @@ void StandardGpuResourcesImpl::initializeForDevice(int device) {
             prop.minor);
 
     // Our code is pre-built with and expects warpSize == 32, validate that
+    // HC for DCU warpsize = 64 but use 32
     FAISS_ASSERT_FMT(
-            prop.warpSize == 32,
+            prop.warpSize == 32 * 2,
             "Device id %d does not have expected warpSize of 32",
             device);
 
diff --git a/faiss/gpu/impl/BinaryDistance.cu.bak b/faiss/gpu/impl/BinaryDistance.cu.bak
new file mode 100644
index 0000000000000000000000000000000000000000..b67b32c8e8b7067fbe2c8203af3e160d74c6e7b2
--- /dev/null
+++ b/faiss/gpu/impl/BinaryDistance.cu.bak
@@ -0,0 +1,301 @@
+#include "hip/hip_runtime.h"
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include <faiss/gpu/utils/DeviceUtils.h>
+#include <faiss/gpu/utils/DeviceDefs.cuh>
+#include <faiss/gpu/utils/DeviceTensor.cuh>
+#include <faiss/gpu/utils/Select.cuh>
+
+namespace faiss {
+namespace gpu {
+
+// Number of warps that the kernel is instantiated with
+constexpr int kWarps = 8;
+constexpr int kLanes = kWarpSize;
+
+constexpr int kMaxDistance = std::numeric_limits<int>::max();
+
+// Performs a binary matrix multiplication, returning the lowest k results in
+// `vecs` for each `query` in terms of Hamming distance (a fused kernel)
+// Each warp calculates distance for a single query
+template <int NumWarpQ, int NumThreadQ, typename BinaryType>
+__launch_bounds__(kWarps* kLanes) __global__ void binaryDistanceAnySize(
+        const Tensor<BinaryType, 2, true> vecs,
+        const Tensor<BinaryType, 2, true> query,
+        Tensor<int, 2, true> outK,
+        Tensor<int, 2, true> outV,
+        int k) {
+    // A matrix tile (query, k)
+    __shared__ BinaryType queryTile[kWarps][kLanes + 1]; // avoid bank conflict
+
+    // B matrix tile (vec, k)
+    __shared__ BinaryType vecTile[kLanes][kLanes + 1]; // avoid bank conflict
+
+    WarpSelect<
+            int,
+            int,
+            false,
+            Comparator<int>,
+            NumWarpQ,
+            NumThreadQ,
+            kWarps * kLanes>
+            heap(kMaxDistance, -1, k);
+
+    int warpId = threadIdx.y;
+    int laneId = threadIdx.x;
+
+    // Each warp handles a single query
+    int warpQuery = blockIdx.x * kWarps + warpId;
+    bool queryInBounds = warpQuery < query.getSize(0);
+
+    // Each warp loops through the entire chunk of vectors
+    for (int blockVec = 0; blockVec < vecs.getSize(0); blockVec += kLanes) {
+        int threadDistance = 0;
+
+        // Reduction dimension
+        for (int blockK = 0; blockK < vecs.getSize(1); blockK += kLanes) {
+            int laneK = blockK + laneId;
+            bool kInBounds = laneK < vecs.getSize(1);
+
+            queryTile[warpId][laneId] =
+                    queryInBounds && kInBounds ? query[warpQuery][laneK] : 0;
+
+            // kWarps warps are responsible for loading 32 vecs
+#pragma unroll
+            for (int i = 0; i < kLanes / kWarps; ++i) {
+                int warpVec = i * kWarps + warpId;
+                int vec = blockVec + warpVec;
+                bool vecInBounds = vec < vecs.getSize(0);
+
+                vecTile[warpVec][laneId] =
+                        vecInBounds && kInBounds ? vecs[vec][laneK] : 0;
+            }
+
+            __syncthreads();
+
+            // Compare distances
+#pragma unroll
+            for (int i = 0; i < kLanes; ++i) {
+                threadDistance +=
+                        __popc(queryTile[warpId][i] ^ vecTile[laneId][i]);
+            }
+
+            __syncthreads();
+        }
+
+        // Lanes within a warp are different vec results against the same query
+        // Only submit distances which represent real (query, vec) pairs
+        bool valInBounds =
+                queryInBounds && (blockVec + laneId < vecs.getSize(0));
+        threadDistance = valInBounds ? threadDistance : kMaxDistance;
+        int id = valInBounds ? blockVec + laneId : -1;
+
+        heap.add(threadDistance, id);
+    }
+
+    heap.reduce();
+
+    if (warpQuery < query.getSize(0)) {
+        heap.writeOut(outK[warpQuery].data(), outV[warpQuery].data(), k);
+    }
+}
+
+// Version of the kernel that avoids a loop over the reduction dimension, and
+// thus avoids reloading the query vectors
+template <
+        int NumWarpQ,
+        int NumThreadQ,
+        typename BinaryType,
+        int ReductionLimit = kLanes>
+__global__ void __launch_bounds__(kWarps* kLanes) binaryDistanceLimitSize(
+        const Tensor<BinaryType, 2, true> vecs,
+        const Tensor<BinaryType, 2, true> query,
+        Tensor<int, 2, true> outK,
+        Tensor<int, 2, true> outV,
+        int k) {
+    // A matrix tile (query, k)
+    __shared__ BinaryType queryTile[kWarps][kLanes + 1]; // avoid bank conflict
+
+    // B matrix tile (vec, k)
+    __shared__ BinaryType vecTile[kLanes][kLanes + 1]; // avoid bank conflict
+
+    WarpSelect<
+            int,
+            int,
+            false,
+            Comparator<int>,
+            NumWarpQ,
+            NumThreadQ,
+            kWarps * kLanes>
+            heap(kMaxDistance, -1, k);
+
+    int warpId = threadIdx.y;
+    int laneId = threadIdx.x;
+
+    // Each warp handles a single query
+    int laneK = laneId;
+    int warpQuery = blockIdx.x * kWarps + warpId;
+    bool kInBounds = laneK < vecs.getSize(1);
+    bool queryInBounds = warpQuery < query.getSize(0);
+
+    queryTile[warpId][laneId] =
+            queryInBounds && kInBounds ? query[warpQuery][laneK] : 0;
+
+    // Each warp loops through the entire chunk of vectors
+    for (int blockVec = 0; blockVec < vecs.getSize(0); blockVec += kLanes) {
+        int threadDistance = 0;
+
+        // kWarps warps are responsible for loading 32 vecs
+#pragma unroll
+        for (int i = 0; i < kLanes / kWarps; ++i) {
+            int warpVec = i * kWarps + warpId;
+            int vec = blockVec + warpVec;
+            bool vecInBounds = vec < vecs.getSize(0);
+
+            vecTile[warpVec][laneId] =
+                    vecInBounds && kInBounds ? vecs[vec][laneK] : 0;
+        }
+
+        __syncthreads();
+
+        // Compare distances
+#pragma unroll
+        for (int i = 0; i < ReductionLimit; ++i) {
+            threadDistance += __popc(queryTile[warpId][i] ^ vecTile[laneId][i]);
+        }
+
+        __syncthreads();
+
+        // Lanes within a warp are different vec results against the same query
+        // Only submit distances which represent real (query, vec) pairs
+        bool valInBounds =
+                queryInBounds && (blockVec + laneId < vecs.getSize(0));
+        threadDistance = valInBounds ? threadDistance : kMaxDistance;
+        int id = valInBounds ? blockVec + laneId : -1;
+
+        heap.add(threadDistance, id);
+    }
+
+    heap.reduce();
+
+    if (warpQuery < query.getSize(0)) {
+        heap.writeOut(outK[warpQuery].data(), outV[warpQuery].data(), k);
+    }
+}
+
+template <typename BinaryType>
+void runBinaryDistanceAnySize(
+        Tensor<BinaryType, 2, true>& vecs,
+        Tensor<BinaryType, 2, true>& query,
+        Tensor<int, 2, true>& outK,
+        Tensor<int, 2, true>& outV,
+        int k,
+        hipStream_t stream) {
+    dim3 grid(utils::divUp(query.getSize(0), kWarps));
+    dim3 block(kLanes, kWarps);
+
+    if (k == 1) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceAnySize<1, 1, BinaryType>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    } else if (k <= 32) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceAnySize<32, 2, BinaryType>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    } else if (k <= 64) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceAnySize<64, 3, BinaryType>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    } else if (k <= 128) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceAnySize<128, 3, BinaryType>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    } else if (k <= 256) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceAnySize<256, 4, BinaryType>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    } else if (k <= 512) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceAnySize<512, 8, BinaryType>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    } else if (k <= 1024) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceAnySize<1024, 8, BinaryType>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    }
+#if GPU_MAX_SELECTION_K >= 2048
+    else if (k <= 2048) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceAnySize<2048, 8, BinaryType>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    }
+#endif
+}
+
+template <typename BinaryType, int ReductionLimit>
+void runBinaryDistanceLimitSize(
+        Tensor<BinaryType, 2, true>& vecs,
+        Tensor<BinaryType, 2, true>& query,
+        Tensor<int, 2, true>& outK,
+        Tensor<int, 2, true>& outV,
+        int k,
+        hipStream_t stream) {
+    dim3 grid(utils::divUp(query.getSize(0), kWarps));
+    dim3 block(kLanes, kWarps);
+
+    if (k == 1) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceLimitSize<1, 1, BinaryType, ReductionLimit>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    } else if (k <= 32) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceLimitSize<32, 2, BinaryType, ReductionLimit>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    } else if (k <= 64) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceLimitSize<64, 3, BinaryType, ReductionLimit>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    } else if (k <= 128) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceLimitSize<128, 3, BinaryType, ReductionLimit>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    } else if (k <= 256) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceLimitSize<256, 4, BinaryType, ReductionLimit>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    } else if (k <= 512) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceLimitSize<512, 8, BinaryType, ReductionLimit>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    } else if (k <= 1024) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceLimitSize<1024, 8, BinaryType, ReductionLimit>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    }
+#if GPU_MAX_SELECTION_K >= 2048
+    else if (k <= 2048) {
+        hipLaunchKernelGGL(HIP_KERNEL_NAME(binaryDistanceLimitSize<2048, 8, BinaryType, ReductionLimit>), dim3(grid), dim3(block), 0, stream, vecs, query, outK, outV, k);
+    }
+#endif
+}
+
+void runBinaryDistance(
+        Tensor<unsigned char, 2, true>& vecs,
+        Tensor<unsigned char, 2, true>& query,
+        Tensor<int, 2, true>& outK,
+        Tensor<int, 2, true>& outV,
+        int k,
+        hipStream_t stream) {
+    FAISS_ASSERT(k <= GPU_MAX_SELECTION_K);
+    FAISS_ASSERT(vecs.getSize(1) == query.getSize(1));
+
+    FAISS_ASSERT(outK.getSize(1) == k);
+    FAISS_ASSERT(outV.getSize(1) == k);
+
+    // For the optimized uint32 kernel, we handle 32 * 8 = 256 max dims
+    constexpr int kReductionLimit32 = 8;
+
+    // For the optimized uint8 kernel, we handle 8 * 16 = 128 max dims
+    constexpr int kReductionLimit8 = 16;
+
+    // All other cases (large or small) go through the general kernel
+
+    if (vecs.getSize(1) % sizeof(unsigned int) == 0 &&
+        (vecs.getSize(1) / sizeof(unsigned int)) <= kReductionLimit32) {
+        auto vecs32 = vecs.castResize<unsigned int>();
+        auto query32 = query.castResize<unsigned int>();
+
+        // Optimize for vectors with dimensions a multiple of 32 that are less
+        // than 32 * kReductionLimit (256) dimensions in size
+        runBinaryDistanceLimitSize<unsigned int, kReductionLimit32>(
+                vecs32, query32, outK, outV, k, stream);
+
+    } else if (vecs.getSize(1) <= kReductionLimit8) {
+        // Optimize for vectors with dimensions a multiple of 32 that are less
+        // than 32 * kReductionLimit (256) dimensions in size
+        runBinaryDistanceLimitSize<unsigned char, kReductionLimit8>(
+                vecs, query, outK, outV, k, stream);
+    } else {
+        // Arbitrary size kernel
+        runBinaryDistanceAnySize<unsigned char>(
+                vecs, query, outK, outV, k, stream);
+    }
+}
+
+} // namespace gpu
+} // namespace faiss
diff --git a/faiss/gpu/impl/IcmEncoder.cu b/faiss/gpu/impl/IcmEncoder.cu
index 25aee99a030d1d9d942c23daf21a8509285b64ad..120512b8118f9111b5cf60ef909492e429664e70 100644
--- a/faiss/gpu/impl/IcmEncoder.cu
+++ b/faiss/gpu/impl/IcmEncoder.cu
@@ -23,8 +23,9 @@
 namespace faiss {
 namespace gpu {
 
-HIP_DYNAMIC_SHARED( char, smem)
-
+//HIP_DYNAMIC_SHARED( char, smem)
+// HC edit rocrand include file std::isnan -> isnan
+extern __shared__ char smem[];
 /** encode using iterative conditional mode
  *
  * For subcode cm of a vector, we fix the other subcodes cj (j != m)
diff --git a/faiss/gpu/impl/PQCodeLoad.cuh b/faiss/gpu/impl/PQCodeLoad.cuh
index e9b8fc9c92dab936c973cddf1be9be199d6e31cc..d713cc9ca153a08498fcc554bdfecda11b86a62a 100644
--- a/faiss/gpu/impl/PQCodeLoad.cuh
+++ b/faiss/gpu/impl/PQCodeLoad.cuh
@@ -19,9 +19,13 @@ namespace gpu {
 #define LD_NC_V4 "ld.global.cs.nc.v4.u32"
 #else
 // Read normally
-#define LD_NC_V1 "ld.global.cs.u32"
-#define LD_NC_V2 "ld.global.cs.v2.u32"
-#define LD_NC_V4 "ld.global.cs.v4.u32"
+// HC
+#define LD_NC_V1 "flat_load_dword"
+#define LD_NC_V2 "flat_load_dwordx2"
+#define LD_NC_V4 "flat_load_dwordx4"
+//#define LD_NC_V1 "ld.global.cs.u32"
+//#define LD_NC_V2 "ld.global.cs.v2.u32"
+//#define LD_NC_V4 "ld.global.cs.v4.u32"
 #endif // __CUDA_ARCH__
 
 ///
@@ -57,7 +61,9 @@ struct LoadCode32<1> {
             uint8_t* p,
             int offset) {
         p += offset * 1;
-        asm("ld.global.cs.u8 {%0}, [%1];" : "=r"(code32[0]) : "l"(p));
+        // HC
+        asm("flat_load_ubyte {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        //asm("ld.global.cs.u8 {%0}, [%1];" : "=r"(code32[0]) : "l"(p));
     }
 };
 
@@ -68,7 +74,9 @@ struct LoadCode32<2> {
             uint8_t* p,
             int offset) {
         p += offset * 2;
-        asm("ld.global.cs.u16 {%0}, [%1];" : "=r"(code32[0]) : "l"(p));
+        // HC
+        asm("flat_load_ushort {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        //asm("ld.global.cs.u16 {%0}, [%1];" : "=r"(code32[0]) : "l"(p));
     }
 };
 
@@ -85,9 +93,13 @@ struct LoadCode32<3> {
 
         // FIXME: this is a non-coalesced, unaligned, non-vectorized load
         // unfortunately need to reorganize memory layout by warp
-        asm("ld.global.cs.u8 {%0}, [%1 + 0];" : "=r"(a) : "l"(p));
-        asm("ld.global.cs.u8 {%0}, [%1 + 1];" : "=r"(b) : "l"(p));
-        asm("ld.global.cs.u8 {%0}, [%1 + 2];" : "=r"(c) : "l"(p));
+        // HC
+        asm("flat_load_ubyte {%0}, %1;" : "=v"(a) : "v"(p));
+        asm("flat_load_ubyte {%0}, %1;" : "=v"(b) : "v"(p+1));
+        asm("flat_load_ubyte {%0}, %1;" : "=v"(c) : "v"(p+2));
+        //asm("ld.global.cs.u8 {%0}, [%1 + 0];" : "=r"(a) : "l"(p));
+        //asm("ld.global.cs.u8 {%0}, [%1 + 1];" : "=r"(b) : "l"(p));
+        //asm("ld.global.cs.u8 {%0}, [%1 + 2];" : "=r"(c) : "l"(p));
 
         // FIXME: this is also slow, since we have to recover the
         // individual bytes loaded
@@ -102,7 +114,9 @@ struct LoadCode32<4> {
             uint8_t* p,
             int offset) {
         p += offset * 4;
-        asm("ld.global.cs.u32 {%0}, [%1];" : "=r"(code32[0]) : "l"(p));
+        // HC
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        //asm("ld.global.cs.u32 {%0}, [%1];" : "=r"(code32[0]) : "l"(p));
     }
 };
 
@@ -113,9 +127,12 @@ struct LoadCode32<8> {
             uint8_t* p,
             int offset) {
         p += offset * 8;
-        asm("ld.global.cs.v2.u32 {%0, %1}, [%2];"
-            : "=r"(code32[0]), "=r"(code32[1])
-            : "l"(p));
+        // HC
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[1]) : "v"(p + 4));
+        //asm("ld.global.cs.v2.u32 {%0, %1}, [%2];"
+        //    : "=r"(code32[0]), "=r"(code32[1])
+        //    : "l"(p));
     }
 };
 
@@ -128,9 +145,13 @@ struct LoadCode32<12> {
         p += offset * 12;
         // FIXME: this is a non-coalesced, unaligned, non-vectorized load
         // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V1 " {%0}, [%1 + 0];" : "=r"(code32[0]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 4];" : "=r"(code32[1]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 8];" : "=r"(code32[2]) : "l"(p));
+        // HC
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[1]) : "v"(p + 4));
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[2]) : "v"(p + 8));
+        //asm(LD_NC_V1 " {%0}, [%1 + 0];" : "=r"(code32[0]) : "l"(p));
+        //asm(LD_NC_V1 " {%0}, [%1 + 4];" : "=r"(code32[1]) : "l"(p));
+        //asm(LD_NC_V1 " {%0}, [%1 + 8];" : "=r"(code32[2]) : "l"(p));
     }
 };
 
@@ -141,9 +162,17 @@ struct LoadCode32<16> {
             uint8_t* p,
             int offset) {
         p += offset * 16;
-        asm("ld.global.cs.v4.u32 {%0, %1, %2, %3}, [%4];"
-            : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
+        // HC
+        //asm("flat_load_dwordx4 [%0,%1,%2,%3], %4;"
+        //    : "=v"(code32[0]), "=v"(code32[1]), "=v"(code32[2]), "=v"(code32[3])
+        //    : "v"(p));
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[1]) : "v"(p + 4));
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[2]) : "v"(p + 8));
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[3]) : "v"(p + 12));
+        //asm("ld.global.cs.v4.u32 {%0, %1, %2, %3}, [%4];"
+        //    : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
+        //    : "l"(p));
     }
 };
 
@@ -156,11 +185,17 @@ struct LoadCode32<20> {
         p += offset * 20;
         // FIXME: this is a non-coalesced, unaligned, non-vectorized load
         // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V1 " {%0}, [%1 + 0];" : "=r"(code32[0]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 4];" : "=r"(code32[1]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 8];" : "=r"(code32[2]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 12];" : "=r"(code32[3]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 16];" : "=r"(code32[4]) : "l"(p));
+        // HC
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[1]) : "v"(p + 4));
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[2]) : "v"(p + 8));
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[3]) : "v"(p + 12));
+        asm("flat_load_dword {%0}, %1;" : "=v"(code32[4]) : "v"(p + 16));
+        //asm(LD_NC_V1 " {%0}, [%1 + 0];" : "=r"(code32[0]) : "l"(p));
+        //asm(LD_NC_V1 " {%0}, [%1 + 4];" : "=r"(code32[1]) : "l"(p));
+        //asm(LD_NC_V1 " {%0}, [%1 + 8];" : "=r"(code32[2]) : "l"(p));
+        //asm(LD_NC_V1 " {%0}, [%1 + 12];" : "=r"(code32[3]) : "l"(p));
+        //asm(LD_NC_V1 " {%0}, [%1 + 16];" : "=r"(code32[4]) : "l"(p));
     }
 };
 
@@ -173,15 +208,22 @@ struct LoadCode32<24> {
         p += offset * 24;
         // FIXME: this is a non-coalesced, unaligned, 2-vectorized load
         // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 0];"
-            : "=r"(code32[0]), "=r"(code32[1])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 8];"
-            : "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5])
-            : "l"(p));
+        // HC
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[1]) : "v"(p + 4));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[2]) : "v"(p + 8));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[3]) : "v"(p + 12));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[4]) : "v"(p + 16));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[5]) : "v"(p + 20));
+        //asm(ld_nc_v2 " {%0, %1}, [%2 + 0];"
+        //    : "=r"(code32[0]), "=r"(code32[1])
+        //    : "l"(p));
+        //asm(ld_nc_v2 " {%0, %1}, [%2 + 8];"
+        //    : "=r"(code32[2]), "=r"(code32[3])
+        //    : "l"(p));
+        //asm(ld_nc_v2 " {%0, %1}, [%2 + 16];"
+        //    : "=r"(code32[4]), "=r"(code32[5])
+        //    : "l"(p));
     }
 };
 
@@ -194,13 +236,21 @@ struct LoadCode32<28> {
         p += offset * 28;
         // FIXME: this is a non-coalesced, unaligned, non-vectorized load
         // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V1 " {%0}, [%1 + 0];" : "=r"(code32[0]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 4];" : "=r"(code32[1]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 8];" : "=r"(code32[2]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 12];" : "=r"(code32[3]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 16];" : "=r"(code32[4]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 20];" : "=r"(code32[5]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 24];" : "=r"(code32[6]) : "l"(p));
+        // HC
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[1]) : "v"(p + 4));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[2]) : "v"(p + 8));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[3]) : "v"(p + 12));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[4]) : "v"(p + 16));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[5]) : "v"(p + 20));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[6]) : "v"(p + 24));
+        //asm(LD_NC_V1 " {%0}, [%1 + 0];" : "=r"(code32[0]) : "l"(p));
+        //asm(LD_NC_V1 " {%0}, [%1 + 4];" : "=r"(code32[1]) : "l"(p));
+        //asm(LD_NC_V1 " {%0}, [%1 + 8];" : "=r"(code32[2]) : "l"(p));
+        //asm(LD_NC_V1 " {%0}, [%1 + 12];" : "=r"(code32[3]) : "l"(p));
+        //asm(LD_NC_V1 " {%0}, [%1 + 16];" : "=r"(code32[4]) : "l"(p));
+        //asm(LD_NC_V1 " {%0}, [%1 + 20];" : "=r"(code32[5]) : "l"(p));
+        //asm(LD_NC_V1 " {%0}, [%1 + 24];" : "=r"(code32[6]) : "l"(p));
     }
 };
 
@@ -213,12 +263,22 @@ struct LoadCode32<32> {
         p += offset * 32;
         // FIXME: this is a non-coalesced load
         // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4];"
-            : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5]), "=r"(code32[6]), "=r"(code32[7])
-            : "l"(p));
+        // HC
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[1]) : "v"(p + 4));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[2]) : "v"(p + 8));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[3]) : "v"(p + 12));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[4]) : "v"(p + 16));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[5]) : "v"(p + 20));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[6]) : "v"(p + 24));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[7]) : "v"(p + 28));
+
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4];"
+        //    : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
+        //    : "l"(p));
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 16];"
+        //    : "=r"(code32[4]), "=r"(code32[5]), "=r"(code32[6]), "=r"(code32[7])
+        //    : "l"(p));
     }
 };
 
@@ -231,21 +291,33 @@ struct LoadCode32<40> {
         p += offset * 40;
         // FIXME: this is a non-coalesced, unaligned, 2-vectorized load
         // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 0];"
-            : "=r"(code32[0]), "=r"(code32[1])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 8];"
-            : "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 24];"
-            : "=r"(code32[6]), "=r"(code32[7])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 32];"
-            : "=r"(code32[8]), "=r"(code32[9])
-            : "l"(p));
+        // HC
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[1]) : "v"(p + 4));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[2]) : "v"(p + 8));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[3]) : "v"(p + 12));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[4]) : "v"(p + 16));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[5]) : "v"(p + 20));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[6]) : "v"(p + 24));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[7]) : "v"(p + 28));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[8]) : "v"(p + 32));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[9]) : "v"(p + 36));
+
+        //asm(LD_NC_V2 " {%0, %1}, [%2 + 0];"
+        //    : "=r"(code32[0]), "=r"(code32[1])
+        //    : "l"(p));
+        //asm(LD_NC_V2 " {%0, %1}, [%2 + 8];"
+        //    : "=r"(code32[2]), "=r"(code32[3])
+        //    : "l"(p));
+        //asm(LD_NC_V2 " {%0, %1}, [%2 + 16];"
+        //    : "=r"(code32[4]), "=r"(code32[5])
+        //    : "l"(p));
+        //asm(LD_NC_V2 " {%0, %1}, [%2 + 24];"
+        //    : "=r"(code32[6]), "=r"(code32[7])
+        //    : "l"(p));
+        //asm(LD_NC_V2 " {%0, %1}, [%2 + 32];"
+        //    : "=r"(code32[8]), "=r"(code32[9])
+        //    : "l"(p));
     }
 };
 
@@ -258,18 +330,32 @@ struct LoadCode32<48> {
         p += offset * 48;
         // FIXME: this is a non-coalesced load
         // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4];"
-            : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5]), "=r"(code32[6]), "=r"(code32[7])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 32];"
-            : "=r"(code32[8]),
-              "=r"(code32[9]),
-              "=r"(code32[10]),
-              "=r"(code32[11])
-            : "l"(p));
+        // HC
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[1]) : "v"(p + 4));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[2]) : "v"(p + 8));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[3]) : "v"(p + 12));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[4]) : "v"(p + 16));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[5]) : "v"(p + 20));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[6]) : "v"(p + 24));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[7]) : "v"(p + 28));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[8]) : "v"(p + 32));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[9]) : "v"(p + 36));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[10]) : "v"(p + 40));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[11]) : "v"(p + 44));
+
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4];"
+        //    : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
+        //    : "l"(p));
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 16];"
+        //    : "=r"(code32[4]), "=r"(code32[5]), "=r"(code32[6]), "=r"(code32[7])
+        //    : "l"(p));
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 32];"
+        //    : "=r"(code32[8]),
+        //      "=r"(code32[9]),
+        //      "=r"(code32[10]),
+        //      "=r"(code32[11])
+        //    : "l"(p));
     }
 };
 
@@ -282,27 +368,43 @@ struct LoadCode32<56> {
         p += offset * 56;
         // FIXME: this is a non-coalesced, unaligned, 2-vectorized load
         // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 0];"
-            : "=r"(code32[0]), "=r"(code32[1])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 8];"
-            : "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 24];"
-            : "=r"(code32[6]), "=r"(code32[7])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 32];"
-            : "=r"(code32[8]), "=r"(code32[9])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 40];"
-            : "=r"(code32[10]), "=r"(code32[11])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 48];"
-            : "=r"(code32[12]), "=r"(code32[13])
-            : "l"(p));
+        // HC
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[1]) : "v"(p + 4));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[2]) : "v"(p + 8));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[3]) : "v"(p + 12));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[4]) : "v"(p + 16));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[5]) : "v"(p + 20));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[6]) : "v"(p + 24));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[7]) : "v"(p + 28));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[8]) : "v"(p + 32));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[9]) : "v"(p + 36));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[10]) : "v"(p + 40));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[11]) : "v"(p + 44));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[12]) : "v"(p + 48));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[13]) : "v"(p + 52));
+
+        //asm(LD_NC_V2 " {%0, %1}, [%2 + 0];"
+        //    : "=r"(code32[0]), "=r"(code32[1])
+        //    : "l"(p));
+        //asm(LD_NC_V2 " {%0, %1}, [%2 + 8];"
+        //    : "=r"(code32[2]), "=r"(code32[3])
+        //    : "l"(p));
+        //asm(LD_NC_V2 " {%0, %1}, [%2 + 16];"
+        //    : "=r"(code32[4]), "=r"(code32[5])
+        //    : "l"(p));
+        //asm(LD_NC_V2 " {%0, %1}, [%2 + 24];"
+        //    : "=r"(code32[6]), "=r"(code32[7])
+        //    : "l"(p));
+        //asm(LD_NC_V2 " {%0, %1}, [%2 + 32];"
+        //    : "=r"(code32[8]), "=r"(code32[9])
+        //    : "l"(p));
+        //asm(LD_NC_V2 " {%0, %1}, [%2 + 40];"
+        //    : "=r"(code32[10]), "=r"(code32[11])
+        //    : "l"(p));
+        //asm(LD_NC_V2 " {%0, %1}, [%2 + 48];"
+        //    : "=r"(code32[12]), "=r"(code32[13])
+        //    : "l"(p));
     }
 };
 
@@ -315,24 +417,42 @@ struct LoadCode32<64> {
         p += offset * 64;
         // FIXME: this is a non-coalesced load
         // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4];"
-            : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5]), "=r"(code32[6]), "=r"(code32[7])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 32];"
-            : "=r"(code32[8]),
-              "=r"(code32[9]),
-              "=r"(code32[10]),
-              "=r"(code32[11])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 48];"
-            : "=r"(code32[12]),
-              "=r"(code32[13]),
-              "=r"(code32[14]),
-              "=r"(code32[15])
-            : "l"(p));
+        // HC
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[1]) : "v"(p + 4));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[2]) : "v"(p + 8));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[3]) : "v"(p + 12));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[4]) : "v"(p + 16));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[5]) : "v"(p + 20));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[6]) : "v"(p + 24));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[7]) : "v"(p + 28));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[8]) : "v"(p + 32));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[9]) : "v"(p + 36));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[10]) : "v"(p + 40));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[11]) : "v"(p + 44));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[12]) : "v"(p + 48));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[13]) : "v"(p + 52));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[14]) : "v"(p + 56));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[15]) : "v"(p + 60));
+
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4];"
+        //    : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
+        //    : "l"(p));
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 16];"
+        //    : "=r"(code32[4]), "=r"(code32[5]), "=r"(code32[6]), "=r"(code32[7])
+        //    : "l"(p));
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 32];"
+        //    : "=r"(code32[8]),
+        //      "=r"(code32[9]),
+        //      "=r"(code32[10]),
+        //      "=r"(code32[11])
+        //    : "l"(p));
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 48];"
+        //    : "=r"(code32[12]),
+        //      "=r"(code32[13]),
+        //      "=r"(code32[14]),
+        //      "=r"(code32[15])
+        //    : "l"(p));
     }
 };
 
@@ -345,36 +465,62 @@ struct LoadCode32<96> {
         p += offset * 96;
         // FIXME: this is a non-coalesced load
         // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4];"
-            : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5]), "=r"(code32[6]), "=r"(code32[7])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 32];"
-            : "=r"(code32[8]),
-              "=r"(code32[9]),
-              "=r"(code32[10]),
-              "=r"(code32[11])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 48];"
-            : "=r"(code32[12]),
-              "=r"(code32[13]),
-              "=r"(code32[14]),
-              "=r"(code32[15])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 64];"
-            : "=r"(code32[16]),
-              "=r"(code32[17]),
-              "=r"(code32[18]),
-              "=r"(code32[19])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 80];"
-            : "=r"(code32[20]),
-              "=r"(code32[21]),
-              "=r"(code32[22]),
-              "=r"(code32[23])
-            : "l"(p));
+        // HC
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[0]) : "v"(p));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[1]) : "v"(p + 4));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[2]) : "v"(p + 8));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[3]) : "v"(p + 12));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[4]) : "v"(p + 16));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[5]) : "v"(p + 20));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[6]) : "v"(p + 24));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[7]) : "v"(p + 28));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[8]) : "v"(p + 32));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[9]) : "v"(p + 36));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[10]) : "v"(p + 40));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[11]) : "v"(p + 44));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[12]) : "v"(p + 48));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[13]) : "v"(p + 52));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[14]) : "v"(p + 56));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[15]) : "v"(p + 60));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[16]) : "v"(p + 64));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[17]) : "v"(p + 68));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[18]) : "v"(p + 72));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[19]) : "v"(p + 76));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[20]) : "v"(p + 80));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[21]) : "v"(p + 84));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[22]) : "v"(p + 88));
+        asm(LD_NC_V1 " {%0}, %1;" : "=v"(code32[23]) : "v"(p + 92));
+
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4];"
+        //    : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
+        //    : "l"(p));
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 16];"
+        //    : "=r"(code32[4]), "=r"(code32[5]), "=r"(code32[6]), "=r"(code32[7])
+        //    : "l"(p));
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 32];"
+        //    : "=r"(code32[8]),
+        //      "=r"(code32[9]),
+        //      "=r"(code32[10]),
+        //      "=r"(code32[11])
+        //    : "l"(p));
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 48];"
+        //    : "=r"(code32[12]),
+        //      "=r"(code32[13]),
+        //      "=r"(code32[14]),
+        //      "=r"(code32[15])
+        //    : "l"(p));
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 64];"
+        //    : "=r"(code32[16]),
+        //      "=r"(code32[17]),
+        //      "=r"(code32[18]),
+        //      "=r"(code32[19])
+        //    : "l"(p));
+        //asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 80];"
+        //    : "=r"(code32[20]),
+        //      "=r"(code32[21]),
+        //      "=r"(code32[22]),
+        //      "=r"(code32[23])
+        //    : "l"(p));
     }
 };
 
diff --git a/faiss/gpu/test/CMakeLists.txt b/faiss/gpu/test/CMakeLists.txt
index bbf9f00eea38a59fa099fd332b4083a37e064557..fcfa076f7ff5ca7fc970a9e038ce75ee5f8a6947 100644
--- a/faiss/gpu/test/CMakeLists.txt
+++ b/faiss/gpu/test/CMakeLists.txt
@@ -14,6 +14,8 @@ add_library(faiss_gpu_test_helper TestUtils.cpp)
 
 #target_link_libraries(faiss_gpu_test_helper PUBLIC faiss gtest CUDA::cudart)
 target_link_libraries(faiss_gpu_test_helper PUBLIC faiss gtest)
+# HC
+target_link_libraries(faiss_gpu_test_helper PUBLIC openblas)
 
 macro(faiss_gpu_test file)
   get_filename_component(test_name ${file} NAME_WE)
diff --git a/faiss/gpu/utils/LoadStoreOperators.cuh b/faiss/gpu/utils/LoadStoreOperators.cuh
index a342c400754c09c33bac2732eb75d965da3abb2d..877397398707ba559f37213a23816b72952bc57d 100644
--- a/faiss/gpu/utils/LoadStoreOperators.cuh
+++ b/faiss/gpu/utils/LoadStoreOperators.cuh
@@ -34,68 +34,70 @@ struct LoadStore {
     }
 };
 
-template <>
-struct LoadStore<Half4> {
-    static inline __device__ Half4 load(void* p) {
-        Half4 out;
-#if CUDA_VERSION >= 9000
-        asm("ld.global.v2.u32 {%0, %1}, [%2];"
-            : "=r"(__HALF2_TO_UI(out.a)), "=r"(__HALF2_TO_UI(out.b))
-            : "l"(p));
-#else
-        asm("ld.global.v2.u32 {%0, %1}, [%2];"
-            : "=r"(out.a.x), "=r"(out.b.x)
-            : "l"(p));
-#endif
-        return out;
-    }
-
-    static inline __device__ void store(void* p, Half4& v) {
-#if CUDA_VERSION >= 9000
-        asm("st.v2.u32 [%0], {%1, %2};"
-            :
-            : "l"(p), "r"(__HALF2_TO_UI(v.a)), "r"(__HALF2_TO_UI(v.b)));
-#else
-        asm("st.v2.u32 [%0], {%1, %2};" : : "l"(p), "r"(v.a.x), "r"(v.b.x));
-#endif
-    }
-};
 
-template <>
-struct LoadStore<Half8> {
-    static inline __device__ Half8 load(void* p) {
-        Half8 out;
-#if CUDA_VERSION >= 9000
-        asm("ld.global.v4.u32 {%0, %1, %2, %3}, [%4];"
-            : "=r"(__HALF2_TO_UI(out.a.a)),
-              "=r"(__HALF2_TO_UI(out.a.b)),
-              "=r"(__HALF2_TO_UI(out.b.a)),
-              "=r"(__HALF2_TO_UI(out.b.b))
-            : "l"(p));
-#else
-        asm("ld.global.v4.u32 {%0, %1, %2, %3}, [%4];"
-            : "=r"(out.a.a.x), "=r"(out.a.b.x), "=r"(out.b.a.x), "=r"(out.b.b.x)
-            : "l"(p));
-#endif
-        return out;
-    }
-
-    static inline __device__ void store(void* p, Half8& v) {
-#if CUDA_VERSION >= 9000
-        asm("st.v4.u32 [%0], {%1, %2, %3, %4};"
-            :
-            : "l"(p),
-              "r"(__HALF2_TO_UI(v.a.a)),
-              "r"(__HALF2_TO_UI(v.a.b)),
-              "r"(__HALF2_TO_UI(v.b.a)),
-              "r"(__HALF2_TO_UI(v.b.b)));
-#else
-        asm("st.v4.u32 [%0], {%1, %2, %3, %4};"
-            :
-            : "l"(p), "r"(v.a.a.x), "r"(v.a.b.x), "r"(v.b.a.x), "r"(v.b.b.x));
-#endif
-    }
-};
+// HC
+//template <>
+//struct LoadStore<Half4> {
+//    static inline __device__ Half4 load(void* p) {
+//        Half4 out;
+//#if CUDA_VERSION >= 9000
+//        asm("ld.global.v2.u32 {%0, %1}, [%2];"
+//            : "=r"(__HALF2_TO_UI(out.a)), "=r"(__HALF2_TO_UI(out.b))
+//            : "l"(p));
+//#else
+//        asm("ld.global.v2.u32 {%0, %1}, [%2];"
+//            : "=r"(out.a.x), "=r"(out.b.x)
+//            : "l"(p));
+//#endif
+//        return out;
+//    }
+//
+//    static inline __device__ void store(void* p, Half4& v) {
+//#if CUDA_VERSION >= 9000
+//        asm("st.v2.u32 [%0], {%1, %2};"
+//            :
+//            : "l"(p), "r"(__HALF2_TO_UI(v.a)), "r"(__HALF2_TO_UI(v.b)));
+//#else
+//        asm("st.v2.u32 [%0], {%1, %2};" : : "l"(p), "r"(v.a.x), "r"(v.b.x));
+//#endif
+//    }
+//};
+//
+//template <>
+//struct LoadStore<Half8> {
+//    static inline __device__ Half8 load(void* p) {
+//        Half8 out;
+//#if CUDA_VERSION >= 9000
+//        asm("ld.global.v4.u32 {%0, %1, %2, %3}, [%4];"
+//            : "=r"(__HALF2_TO_UI(out.a.a)),
+//              "=r"(__HALF2_TO_UI(out.a.b)),
+//              "=r"(__HALF2_TO_UI(out.b.a)),
+//              "=r"(__HALF2_TO_UI(out.b.b))
+//            : "l"(p));
+//#else
+//        asm("ld.global.v4.u32 {%0, %1, %2, %3}, [%4];"
+//            : "=r"(out.a.a.x), "=r"(out.a.b.x), "=r"(out.b.a.x), "=r"(out.b.b.x)
+//            : "l"(p));
+//#endif
+//        return out;
+//    }
+//
+//    static inline __device__ void store(void* p, Half8& v) {
+//#if CUDA_VERSION >= 9000
+//        asm("st.v4.u32 [%0], {%1, %2, %3, %4};"
+//            :
+//            : "l"(p),
+//              "r"(__HALF2_TO_UI(v.a.a)),
+//              "r"(__HALF2_TO_UI(v.a.b)),
+//              "r"(__HALF2_TO_UI(v.b.a)),
+//              "r"(__HALF2_TO_UI(v.b.b)));
+//#else
+//        asm("st.v4.u32 [%0], {%1, %2, %3, %4};"
+//            :
+//            : "l"(p), "r"(v.a.a.x), "r"(v.a.b.x), "r"(v.b.a.x), "r"(v.b.b.x));
+//#endif
+//    }
+//};
 
 } // namespace gpu
 } // namespace faiss
diff --git a/faiss/gpu/utils/MatrixMult-inl.cuh b/faiss/gpu/utils/MatrixMult-inl.cuh
index 535eb49001bf187effc209df50a082b74bc85256..7462ada876c578a086a23900c4c8c9b20e4b536d 100644
--- a/faiss/gpu/utils/MatrixMult-inl.cuh
+++ b/faiss/gpu/utils/MatrixMult-inl.cuh
@@ -164,7 +164,8 @@ hipblasStatus_t rawBatchGemm(
     auto cBT = GetCudaType<BT>::Type;
 
     // Always accumulate in f32
-    return cublasGemmStridedBatchedEx(
+    // HC
+    return hipblasGemmStridedBatchedEx(
             handle,
             transa,
             transb,
diff --git a/faiss/gpu/utils/PtxUtils.cuh b/faiss/gpu/utils/PtxUtils.cuh
index 2ba4c6039859d9ee3c1876491e3477d630cdb0fa..d4f783ebec85727b772abd139e959605e9bf4347 100644
--- a/faiss/gpu/utils/PtxUtils.cuh
+++ b/faiss/gpu/utils/PtxUtils.cuh
@@ -21,10 +21,10 @@ namespace gpu {
 //    asm("bfe.u64 %0, %1, %2, %3;" : "=l"(OUT) : "l"(VAL), "r"(POS), "r"(LEN));
 
 #define GET_BITFIELD_U32(OUT, VAL, POS, LEN) \
-    asm("v_bfe_u32 %0, %1, %2, %3" : "=v"(OUT) : "v"(VAL), "v"(POS), "v"(LEN));
+    {unsigned int pos1 = (POS) & 0xff; unsigned int len1 = (LEN) & 0xff; unsigned int m = (1u << len1) - 1u; OUT = ((VAL) >> pos1) & m;}
 
 #define GET_BITFIELD_U64(OUT, VAL, POS, LEN) \
-    asm("v_bfe_u64 %0, %1, %2, %3" : "=v"(OUT) : "v"(VAL), "v"(POS), "v"(LEN));
+    POS &= 0xff; LEN &= 0xff; uint64_t m = (1u << LEN) - 1u; OUT = (VAL >> POS) & m; 
 
 __device__ __forceinline__ unsigned int getBitfield(
         unsigned int val,
@@ -32,18 +32,28 @@ __device__ __forceinline__ unsigned int getBitfield(
         int len) {
     unsigned int ret;
 // HC
-    asm("v_bfe_u32 %0, %1, %2, %3" : "=v"(ret) : "v"(val), "v"(pos), "v"(len));
+//    asm("v_bfe_u32 %0, %1, %2, %3" : "=v"(ret) : "v"(val), "v"(pos), "v"(len));
+    pos &= 0xff;
+    len &= 0xff;
+
+    unsigned int m = (1u << len) - 1u;
+    return (val >> pos) & m;
 //    asm("bfe.u32 %0, %1, %2, %3;" : "=r"(ret) : "r"(val), "r"(pos), "r"(len));
-    return ret;
+//    return ret;
 }
 
 __device__ __forceinline__ uint64_t
 getBitfield(uint64_t val, int pos, int len) {
     uint64_t ret;
     // HC
-    asm("v_bfe_u64 %0, %1, %2, %3" : "=v"(ret) : "v"(val), "v"(pos), "v"(len));
+    //asm("v_bfe_u64 %0, %1, %2, %3" : "=v"(ret) : "v"(val), "v"(pos), "v"(len));
+    pos &= 0xff;
+    len &= 0xff;
+
+    uint64_t m = (1u << len) - 1u;
+    return (val >> pos) & m;    
     //asm("bfe.u64 %0, %1, %2, %3;" : "=l"(ret) : "l"(val), "r"(pos), "r"(len));
-    return ret;
+    //return ret;
 }
 
 __device__ __forceinline__ unsigned int setBitfield(
@@ -52,41 +62,100 @@ __device__ __forceinline__ unsigned int setBitfield(
         int pos,
         int len) {
     unsigned int ret;
-    asm("bfi.b32 %0, %1, %2, %3, %4;"
-        : "=r"(ret)
-        : "r"(toInsert), "r"(val), "r"(pos), "r"(len));
-    return ret;
+    // HC
+    pos &= 0xff;
+    len &= 0xff;
+
+    unsigned int m = (1u << len) - 1u;
+    toInsert &= m;
+    toInsert <<= pos;
+    m <<= pos;
+
+    return (val & ~m) | toInsert;
+    //asm("bfi.b32 %0, %1, %2, %3, %4;"
+    //    : "=r"(ret)
+    //    : "r"(toInsert), "r"(val), "r"(pos), "r"(len));
+    //return ret;
 }
 
 __device__ __forceinline__ int getLaneId() {
     int laneId;
-    asm("mov.u32 %0, %%laneid;" : "=r"(laneId));
+    // HC
+    laneId = __lane_id();
+    // asm("mov.u32 %0, %%laneid;" : "=r"(laneId));
     return laneId;
 }
 
-__device__ __forceinline__ unsigned getLaneMaskLt() {
-    unsigned mask;
-    asm("mov.u32 %0, %%lanemask_lt;" : "=r"(mask));
-    return mask;
+// HC
+__device__ __forceinline__ unsigned long long int getLaneMaskLt() {
+  const std::uint64_t m = (1ull << getLaneId()) - 1ull;
+  return m;
 }
+//__device__ __forceinline__ unsigned getLaneMaskLt() {
+//    unsigned mask;
+//    asm("mov.u32 %0, %%lanemask_lt;" : "=r"(mask));
+//    return mask;
+//}
 
+// HC
+#if defined (__HIP_PLATFORM_HCC__)
+__device__ __forceinline__ unsigned long long int getLaneMaskLe() {
+  std::uint64_t m = UINT64_MAX >> (sizeof(std::uint64_t) * CHAR_BIT - (getLaneId() + 1));
+  return m;
+}
+#else
 __device__ __forceinline__ unsigned getLaneMaskLe() {
-    unsigned mask;
-    asm("mov.u32 %0, %%lanemask_le;" : "=r"(mask));
-    return mask;
+  unsigned mask;
+  asm("mov.u32 %0, %%lanemask_le;" : "=r"(mask));
+  return mask;
 }
+#endif
 
+//__device__ __forceinline__ unsigned getLaneMaskLe() {
+//    unsigned mask;
+//    asm("mov.u32 %0, %%lanemask_le;" : "=r"(mask));
+//    return mask;
+//}
+
+
+// HC
+#if defined(__HIP_PLATFORM_HCC__)
+__device__ __forceinline__ unsigned long long int getLaneMaskGt() {
+  const std::uint64_t m = getLaneMaskLe();
+  return m ? ~m : m;
+}
+#else
 __device__ __forceinline__ unsigned getLaneMaskGt() {
-    unsigned mask;
-    asm("mov.u32 %0, %%lanemask_gt;" : "=r"(mask));
-    return mask;
+  unsigned mask;
+  asm("mov.u32 %0, %%lanemask_gt;" : "=r"(mask));
+  return mask;
 }
+#endif
 
+//__device__ __forceinline__ unsigned getLaneMaskGt() {
+//    unsigned mask;
+//    asm("mov.u32 %0, %%lanemask_gt;" : "=r"(mask));
+//    return mask;
+//}
+
+// HC
+#if defined(__HIP_PLATFORM_HCC__)
+__device__ __forceinline__ unsigned long long int getLaneMaskGe() {
+  const std::uint64_t m = getLaneMaskLt();
+  return ~m;
+}
+#else
 __device__ __forceinline__ unsigned getLaneMaskGe() {
-    unsigned mask;
-    asm("mov.u32 %0, %%lanemask_ge;" : "=r"(mask));
-    return mask;
+  unsigned mask;
+  asm("mov.u32 %0, %%lanemask_ge;" : "=r"(mask));
+  return mask;
 }
+#endif
+//__device__ __forceinline__ unsigned getLaneMaskGe() {
+//    unsigned mask;
+//    asm("mov.u32 %0, %%lanemask_ge;" : "=r"(mask));
+//    return mask;
+//}
 
 __device__ __forceinline__ void namedBarrierWait(int name, int numThreads) {
     asm volatile("bar.sync %0, %1;" : : "r"(name), "r"(numThreads) : "memory");
diff --git a/faiss/gpu_cuda/CMakeLists.txt b/faiss/gpu_cuda/CMakeLists.txt
deleted file mode 100644
index b887048f60d4d98e931d634e9ec1859e73f2dcfe..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/CMakeLists.txt
+++ /dev/null
@@ -1,183 +0,0 @@
-# Copyright (c) Facebook, Inc. and its affiliates.
-# All rights reserved.
-#
-# This source code is licensed under the BSD-style license found in the
-# LICENSE file in the root directory of this source tree.
-
-set(FAISS_GPU_SRC
-  GpuAutoTune.cpp
-  GpuCloner.cpp
-  GpuClonerOptions.cpp
-  GpuDistance.cu
-  GpuIcmEncoder.cu
-  GpuIndex.cu
-  GpuIndexBinaryFlat.cu
-  GpuIndexFlat.cu
-  GpuIndexIVF.cu
-  GpuIndexIVFFlat.cu
-  GpuIndexIVFPQ.cu
-  GpuIndexIVFScalarQuantizer.cu
-  GpuResources.cpp
-  StandardGpuResources.cpp
-  impl/BinaryDistance.cu
-  impl/BinaryFlatIndex.cu
-  impl/BroadcastSum.cu
-  impl/Distance.cu
-  impl/FlatIndex.cu
-  impl/IVFAppend.cu
-  impl/IVFBase.cu
-  impl/IVFFlat.cu
-  impl/IVFFlatScan.cu
-  impl/IVFInterleaved.cu
-  impl/IVFPQ.cu
-  impl/IVFUtils.cu
-  impl/IVFUtilsSelect1.cu
-  impl/IVFUtilsSelect2.cu
-  impl/InterleavedCodes.cpp
-  impl/L2Norm.cu
-  impl/L2Select.cu
-  impl/PQScanMultiPassPrecomputed.cu
-  impl/RemapIndices.cpp
-  impl/VectorResidual.cu
-  impl/scan/IVFInterleaved1.cu
-  impl/scan/IVFInterleaved32.cu
-  impl/scan/IVFInterleaved64.cu
-  impl/scan/IVFInterleaved128.cu
-  impl/scan/IVFInterleaved256.cu
-  impl/scan/IVFInterleaved512.cu
-  impl/scan/IVFInterleaved1024.cu
-  impl/scan/IVFInterleaved2048.cu
-  impl/IcmEncoder.cu
-  utils/BlockSelectFloat.cu
-  utils/DeviceUtils.cu
-  utils/StackDeviceMemory.cpp
-  utils/Timer.cpp
-  utils/WarpSelectFloat.cu
-  utils/blockselect/BlockSelectFloat1.cu
-  utils/blockselect/BlockSelectFloat32.cu
-  utils/blockselect/BlockSelectFloat64.cu
-  utils/blockselect/BlockSelectFloat128.cu
-  utils/blockselect/BlockSelectFloat256.cu
-  utils/blockselect/BlockSelectFloatF512.cu
-  utils/blockselect/BlockSelectFloatF1024.cu
-  utils/blockselect/BlockSelectFloatF2048.cu
-  utils/blockselect/BlockSelectFloatT512.cu
-  utils/blockselect/BlockSelectFloatT1024.cu
-  utils/blockselect/BlockSelectFloatT2048.cu
-  utils/warpselect/WarpSelectFloat1.cu
-  utils/warpselect/WarpSelectFloat32.cu
-  utils/warpselect/WarpSelectFloat64.cu
-  utils/warpselect/WarpSelectFloat128.cu
-  utils/warpselect/WarpSelectFloat256.cu
-  utils/warpselect/WarpSelectFloatF512.cu
-  utils/warpselect/WarpSelectFloatF1024.cu
-  utils/warpselect/WarpSelectFloatF2048.cu
-  utils/warpselect/WarpSelectFloatT512.cu
-  utils/warpselect/WarpSelectFloatT1024.cu
-  utils/warpselect/WarpSelectFloatT2048.cu
-)
-
-set(FAISS_GPU_HEADERS
-  GpuAutoTune.h
-  GpuCloner.h
-  GpuClonerOptions.h
-  GpuDistance.h
-  GpuIcmEncoder.h
-  GpuFaissAssert.h
-  GpuIndex.h
-  GpuIndexBinaryFlat.h
-  GpuIndexFlat.h
-  GpuIndexIVF.h
-  GpuIndexIVFFlat.h
-  GpuIndexIVFPQ.h
-  GpuIndexIVFScalarQuantizer.h
-  GpuIndicesOptions.h
-  GpuResources.h
-  StandardGpuResources.h
-  impl/BinaryDistance.cuh
-  impl/BinaryFlatIndex.cuh
-  impl/BroadcastSum.cuh
-  impl/Distance.cuh
-  impl/DistanceUtils.cuh
-  impl/FlatIndex.cuh
-  impl/GeneralDistance.cuh
-  impl/GpuScalarQuantizer.cuh
-  impl/IVFAppend.cuh
-  impl/IVFBase.cuh
-  impl/IVFFlat.cuh
-  impl/IVFFlatScan.cuh
-  impl/IVFInterleaved.cuh
-  impl/IVFPQ.cuh
-  impl/IVFUtils.cuh
-  impl/InterleavedCodes.h
-  impl/L2Norm.cuh
-  impl/L2Select.cuh
-  impl/PQCodeDistances-inl.cuh
-  impl/PQCodeDistances.cuh
-  impl/PQCodeLoad.cuh
-  impl/PQScanMultiPassNoPrecomputed-inl.cuh
-  impl/PQScanMultiPassNoPrecomputed.cuh
-  impl/PQScanMultiPassPrecomputed.cuh
-  impl/RemapIndices.h
-  impl/VectorResidual.cuh
-  impl/scan/IVFInterleavedImpl.cuh
-  impl/IcmEncoder.cuh
-  utils/BlockSelectKernel.cuh
-  utils/Comparators.cuh
-  utils/ConversionOperators.cuh
-  utils/CopyUtils.cuh
-  utils/DeviceDefs.cuh
-  utils/DeviceTensor-inl.cuh
-  utils/DeviceTensor.cuh
-  utils/DeviceUtils.h
-  utils/DeviceVector.cuh
-  utils/Float16.cuh
-  utils/HostTensor-inl.cuh
-  utils/HostTensor.cuh
-  utils/Limits.cuh
-  utils/LoadStoreOperators.cuh
-  utils/MathOperators.cuh
-  utils/MatrixMult-inl.cuh
-  utils/MatrixMult.cuh
-  utils/MergeNetworkBlock.cuh
-  utils/MergeNetworkUtils.cuh
-  utils/MergeNetworkWarp.cuh
-  utils/NoTypeTensor.cuh
-  utils/Pair.cuh
-  utils/PtxUtils.cuh
-  utils/ReductionOperators.cuh
-  utils/Reductions.cuh
-  utils/Select.cuh
-  utils/StackDeviceMemory.h
-  utils/StaticUtils.h
-  utils/Tensor-inl.cuh
-  utils/Tensor.cuh
-  utils/ThrustAllocator.cuh
-  utils/Timer.h
-  utils/Transpose.cuh
-  utils/WarpPackedBits.cuh
-  utils/WarpSelectKernel.cuh
-  utils/WarpShuffles.cuh
-  utils/blockselect/BlockSelectImpl.cuh
-  utils/warpselect/WarpSelectImpl.cuh
-)
-
-# Export FAISS_GPU_HEADERS variable to parent scope.
-set(FAISS_GPU_HEADERS ${FAISS_GPU_HEADERS} PARENT_SCOPE)
-
-target_sources(faiss PRIVATE ${FAISS_GPU_SRC})
-target_sources(faiss_avx2 PRIVATE ${FAISS_GPU_SRC})
-
-foreach(header ${FAISS_GPU_HEADERS})
-  get_filename_component(dir ${header} DIRECTORY )
-  install(FILES ${header}
-    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/faiss/gpu/${dir}
-  )
-endforeach()
-
-# HC
-#find_package(CUDAToolkit REQUIRED)
-target_link_libraries(faiss PRIVATE HIP::hipblas)
-target_link_libraries(faiss_avx2 PRIVATE HIP::hipblas)
-#target_compile_options(faiss PRIVATE $<$<COMPILE_LANGUAGE:CUDA>:-Xfatbin=-compress-all>)
-#target_compile_options(faiss_avx2 PRIVATE $<$<COMPILE_LANGUAGE:CUDA>:-Xfatbin=-compress-all>)
diff --git a/faiss/gpu_cuda/GpuAutoTune.cpp b/faiss/gpu_cuda/GpuAutoTune.cpp
deleted file mode 100644
index 2720df422ca141c653997f6a61bdceab87204850..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuAutoTune.cpp
+++ /dev/null
@@ -1,90 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuAutoTune.h>
-#include <typeinfo>
-
-#include <faiss/IndexPreTransform.h>
-#include <faiss/IndexReplicas.h>
-#include <faiss/IndexShards.h>
-#include <faiss/gpu/GpuIndex.h>
-#include <faiss/gpu/GpuIndexFlat.h>
-#include <faiss/gpu/GpuIndexIVFFlat.h>
-#include <faiss/gpu/GpuIndexIVFPQ.h>
-#include <faiss/gpu/GpuIndexIVFScalarQuantizer.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/impl/FaissAssert.h>
-
-namespace faiss {
-namespace gpu {
-
-using namespace ::faiss;
-
-/**********************************************************
- * Parameters to auto-tune on GpuIndex'es
- **********************************************************/
-
-#define DC(classname) auto ix = dynamic_cast<const classname*>(index)
-
-void GpuParameterSpace::initialize(const Index* index) {
-    if (DC(IndexPreTransform)) {
-        index = ix->index;
-    }
-    if (DC(IndexReplicas)) {
-        if (ix->count() == 0)
-            return;
-        index = ix->at(0);
-    }
-    if (DC(IndexShards)) {
-        if (ix->count() == 0)
-            return;
-        index = ix->at(0);
-    }
-    if (DC(GpuIndexIVF)) {
-        ParameterRange& pr = add_range("nprobe");
-        for (int i = 0; i < 12; i++) {
-            size_t nprobe = 1 << i;
-            if (nprobe >= ix->getNumLists() || nprobe > getMaxKSelection())
-                break;
-            pr.values.push_back(nprobe);
-        }
-    }
-    // not sure we should call the parent initializer
-}
-
-#undef DC
-// non-const version
-#define DC(classname) auto* ix = dynamic_cast<classname*>(index)
-
-void GpuParameterSpace::set_index_parameter(
-        Index* index,
-        const std::string& name,
-        double val) const {
-    if (DC(IndexReplicas)) {
-        for (int i = 0; i < ix->count(); i++)
-            set_index_parameter(ix->at(i), name, val);
-        return;
-    }
-    if (name == "nprobe") {
-        if (DC(GpuIndexIVF)) {
-            ix->setNumProbes(int(val));
-            return;
-        }
-    }
-    if (name == "use_precomputed_table") {
-        if (DC(GpuIndexIVFPQ)) {
-            ix->setPrecomputedCodes(bool(val));
-            return;
-        }
-    }
-
-    // maybe normal index parameters apply?
-    ParameterSpace::set_index_parameter(index, name, val);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuAutoTune.h b/faiss/gpu_cuda/GpuAutoTune.h
deleted file mode 100644
index fbe9a11d666af38f5ac1764820d097165491f138..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuAutoTune.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/AutoTune.h>
-#include <faiss/Index.h>
-
-namespace faiss {
-namespace gpu {
-
-/// parameter space and setters for GPU indexes
-struct GpuParameterSpace : faiss::ParameterSpace {
-    /// initialize with reasonable parameters for the index
-    void initialize(const faiss::Index* index) override;
-
-    /// set a combination of parameters on an index
-    void set_index_parameter(
-            faiss::Index* index,
-            const std::string& name,
-            double val) const override;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuCloner.cpp b/faiss/gpu_cuda/GpuCloner.cpp
deleted file mode 100644
index 8d39da8f39268bdb21081da482abe306fee6c536..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuCloner.cpp
+++ /dev/null
@@ -1,434 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuCloner.h>
-#include <faiss/impl/FaissAssert.h>
-#include <typeinfo>
-
-#include <faiss/gpu/StandardGpuResources.h>
-
-#include <faiss/IndexFlat.h>
-#include <faiss/IndexIVF.h>
-#include <faiss/IndexIVFFlat.h>
-#include <faiss/IndexIVFPQ.h>
-#include <faiss/IndexPreTransform.h>
-#include <faiss/IndexReplicas.h>
-#include <faiss/IndexScalarQuantizer.h>
-#include <faiss/MetaIndexes.h>
-#include <faiss/gpu/GpuIndex.h>
-#include <faiss/gpu/GpuIndexFlat.h>
-#include <faiss/gpu/GpuIndexIVFFlat.h>
-#include <faiss/gpu/GpuIndexIVFPQ.h>
-#include <faiss/gpu/GpuIndexIVFScalarQuantizer.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/impl/FaissAssert.h>
-#include <faiss/index_io.h>
-
-namespace faiss {
-namespace gpu {
-
-/**********************************************************
- * Cloning to CPU
- **********************************************************/
-
-void ToCPUCloner::merge_index(Index* dst, Index* src, bool successive_ids) {
-    if (auto ifl = dynamic_cast<IndexFlat*>(dst)) {
-        auto ifl2 = dynamic_cast<const IndexFlat*>(src);
-        FAISS_ASSERT(ifl2);
-        FAISS_ASSERT(successive_ids);
-        ifl->add(ifl2->ntotal, ifl2->get_xb());
-    } else if (auto ifl = dynamic_cast<IndexIVFFlat*>(dst)) {
-        auto ifl2 = dynamic_cast<IndexIVFFlat*>(src);
-        FAISS_ASSERT(ifl2);
-        ifl->merge_from(*ifl2, successive_ids ? ifl->ntotal : 0);
-    } else if (auto ifl = dynamic_cast<IndexIVFScalarQuantizer*>(dst)) {
-        auto ifl2 = dynamic_cast<IndexIVFScalarQuantizer*>(src);
-        FAISS_ASSERT(ifl2);
-        ifl->merge_from(*ifl2, successive_ids ? ifl->ntotal : 0);
-    } else if (auto ifl = dynamic_cast<IndexIVFPQ*>(dst)) {
-        auto ifl2 = dynamic_cast<IndexIVFPQ*>(src);
-        FAISS_ASSERT(ifl2);
-        ifl->merge_from(*ifl2, successive_ids ? ifl->ntotal : 0);
-    } else {
-        FAISS_ASSERT(!"merging not implemented for this type of class");
-    }
-}
-
-Index* ToCPUCloner::clone_Index(const Index* index) {
-    if (auto ifl = dynamic_cast<const GpuIndexFlat*>(index)) {
-        IndexFlat* res = new IndexFlat();
-        ifl->copyTo(res);
-        return res;
-    } else if (auto ifl = dynamic_cast<const GpuIndexIVFFlat*>(index)) {
-        IndexIVFFlat* res = new IndexIVFFlat();
-        ifl->copyTo(res);
-        return res;
-    } else if (
-            auto ifl = dynamic_cast<const GpuIndexIVFScalarQuantizer*>(index)) {
-        IndexIVFScalarQuantizer* res = new IndexIVFScalarQuantizer();
-        ifl->copyTo(res);
-        return res;
-    } else if (auto ipq = dynamic_cast<const GpuIndexIVFPQ*>(index)) {
-        IndexIVFPQ* res = new IndexIVFPQ();
-        ipq->copyTo(res);
-        return res;
-
-        // for IndexShards and IndexReplicas we assume that the
-        // objective is to make a single component out of them
-        // (inverse op of ToGpuClonerMultiple)
-
-    } else if (auto ish = dynamic_cast<const IndexShards*>(index)) {
-        int nshard = ish->count();
-        FAISS_ASSERT(nshard > 0);
-        Index* res = clone_Index(ish->at(0));
-        for (int i = 1; i < ish->count(); i++) {
-            Index* res_i = clone_Index(ish->at(i));
-            merge_index(res, res_i, ish->successive_ids);
-            delete res_i;
-        }
-        return res;
-    } else if (auto ipr = dynamic_cast<const IndexReplicas*>(index)) {
-        // just clone one of the replicas
-        FAISS_ASSERT(ipr->count() > 0);
-        return clone_Index(ipr->at(0));
-    } else {
-        return Cloner::clone_Index(index);
-    }
-}
-
-faiss::Index* index_gpu_to_cpu(const faiss::Index* gpu_index) {
-    ToCPUCloner cl;
-    return cl.clone_Index(gpu_index);
-}
-
-/**********************************************************
- * Cloning to 1 GPU
- **********************************************************/
-
-ToGpuCloner::ToGpuCloner(
-        GpuResourcesProvider* prov,
-        int device,
-        const GpuClonerOptions& options)
-        : GpuClonerOptions(options), provider(prov), device(device) {}
-
-Index* ToGpuCloner::clone_Index(const Index* index) {
-    using idx_t = Index::idx_t;
-    if (auto ifl = dynamic_cast<const IndexFlat*>(index)) {
-        GpuIndexFlatConfig config;
-        config.device = device;
-        config.useFloat16 = useFloat16;
-        config.storeTransposed = storeTransposed;
-        return new GpuIndexFlat(provider, ifl, config);
-    } else if (
-            dynamic_cast<const IndexScalarQuantizer*>(index) &&
-            static_cast<const IndexScalarQuantizer*>(index)->sq.qtype ==
-                    ScalarQuantizer::QT_fp16) {
-        GpuIndexFlatConfig config;
-        config.device = device;
-        config.useFloat16 = true;
-        GpuIndexFlat* gif = new GpuIndexFlat(
-                provider, index->d, index->metric_type, config);
-        // transfer data by blocks
-        idx_t bs = 1024 * 1024;
-        for (idx_t i0 = 0; i0 < index->ntotal; i0 += bs) {
-            idx_t i1 = std::min(i0 + bs, index->ntotal);
-            std::vector<float> buffer((i1 - i0) * index->d);
-            index->reconstruct_n(i0, i1 - i0, buffer.data());
-            gif->add(i1 - i0, buffer.data());
-        }
-        assert(gif->getNumVecs() == index->ntotal);
-        return gif;
-    } else if (auto ifl = dynamic_cast<const faiss::IndexIVFFlat*>(index)) {
-        GpuIndexIVFFlatConfig config;
-        config.device = device;
-        config.indicesOptions = indicesOptions;
-        config.flatConfig.useFloat16 = useFloat16CoarseQuantizer;
-        config.flatConfig.storeTransposed = storeTransposed;
-
-        GpuIndexIVFFlat* res = new GpuIndexIVFFlat(
-                provider, ifl->d, ifl->nlist, ifl->metric_type, config);
-        if (reserveVecs > 0 && ifl->ntotal == 0) {
-            res->reserveMemory(reserveVecs);
-        }
-
-        res->copyFrom(ifl);
-        return res;
-    } else if (
-            auto ifl = dynamic_cast<const faiss::IndexIVFScalarQuantizer*>(
-                    index)) {
-        GpuIndexIVFScalarQuantizerConfig config;
-        config.device = device;
-        config.indicesOptions = indicesOptions;
-        config.flatConfig.useFloat16 = useFloat16CoarseQuantizer;
-        config.flatConfig.storeTransposed = storeTransposed;
-
-        GpuIndexIVFScalarQuantizer* res = new GpuIndexIVFScalarQuantizer(
-                provider,
-                ifl->d,
-                ifl->nlist,
-                ifl->sq.qtype,
-                ifl->metric_type,
-                ifl->by_residual,
-                config);
-        if (reserveVecs > 0 && ifl->ntotal == 0) {
-            res->reserveMemory(reserveVecs);
-        }
-
-        res->copyFrom(ifl);
-        return res;
-    } else if (auto ipq = dynamic_cast<const faiss::IndexIVFPQ*>(index)) {
-        if (verbose) {
-            printf("  IndexIVFPQ size %ld -> GpuIndexIVFPQ "
-                   "indicesOptions=%d "
-                   "usePrecomputed=%d useFloat16=%d reserveVecs=%ld\n",
-                   ipq->ntotal,
-                   indicesOptions,
-                   usePrecomputed,
-                   useFloat16,
-                   reserveVecs);
-        }
-        GpuIndexIVFPQConfig config;
-        config.device = device;
-        config.indicesOptions = indicesOptions;
-        config.flatConfig.useFloat16 = useFloat16CoarseQuantizer;
-        config.flatConfig.storeTransposed = storeTransposed;
-        config.useFloat16LookupTables = useFloat16;
-        config.usePrecomputedTables = usePrecomputed;
-
-        GpuIndexIVFPQ* res = new GpuIndexIVFPQ(provider, ipq, config);
-
-        if (reserveVecs > 0 && ipq->ntotal == 0) {
-            res->reserveMemory(reserveVecs);
-        }
-
-        return res;
-    } else {
-        // default: use CPU cloner
-        return Cloner::clone_Index(index);
-    }
-}
-
-faiss::Index* index_cpu_to_gpu(
-        GpuResourcesProvider* provider,
-        int device,
-        const faiss::Index* index,
-        const GpuClonerOptions* options) {
-    GpuClonerOptions defaults;
-    ToGpuCloner cl(provider, device, options ? *options : defaults);
-    return cl.clone_Index(index);
-}
-
-/**********************************************************
- * Cloning to multiple GPUs
- **********************************************************/
-
-ToGpuClonerMultiple::ToGpuClonerMultiple(
-        std::vector<GpuResourcesProvider*>& provider,
-        std::vector<int>& devices,
-        const GpuMultipleClonerOptions& options)
-        : GpuMultipleClonerOptions(options) {
-    FAISS_ASSERT(provider.size() == devices.size());
-    for (int i = 0; i < provider.size(); i++) {
-        sub_cloners.push_back(ToGpuCloner(provider[i], devices[i], options));
-    }
-}
-
-ToGpuClonerMultiple::ToGpuClonerMultiple(
-        const std::vector<ToGpuCloner>& sub_cloners,
-        const GpuMultipleClonerOptions& options)
-        : GpuMultipleClonerOptions(options), sub_cloners(sub_cloners) {}
-
-void ToGpuClonerMultiple::copy_ivf_shard(
-        const IndexIVF* index_ivf,
-        IndexIVF* idx2,
-        long n,
-        long i) {
-    if (shard_type == 2) {
-        long i0 = i * index_ivf->ntotal / n;
-        long i1 = (i + 1) * index_ivf->ntotal / n;
-
-        if (verbose)
-            printf("IndexShards shard %ld indices %ld:%ld\n", i, i0, i1);
-        index_ivf->copy_subset_to(*idx2, 2, i0, i1);
-        FAISS_ASSERT(idx2->ntotal == i1 - i0);
-    } else if (shard_type == 1) {
-        if (verbose)
-            printf("IndexShards shard %ld select modulo %ld = %ld\n", i, n, i);
-        index_ivf->copy_subset_to(*idx2, 1, n, i);
-    } else {
-        FAISS_THROW_FMT("shard_type %d not implemented", shard_type);
-    }
-}
-
-Index* ToGpuClonerMultiple::clone_Index_to_shards(const Index* index) {
-    long n = sub_cloners.size();
-
-    auto index_ivfpq = dynamic_cast<const faiss::IndexIVFPQ*>(index);
-    auto index_ivfflat = dynamic_cast<const faiss::IndexIVFFlat*>(index);
-    auto index_ivfsq =
-            dynamic_cast<const faiss::IndexIVFScalarQuantizer*>(index);
-    auto index_flat = dynamic_cast<const faiss::IndexFlat*>(index);
-    FAISS_THROW_IF_NOT_MSG(
-            index_ivfpq || index_ivfflat || index_flat || index_ivfsq,
-            "IndexShards implemented only for "
-            "IndexIVFFlat, IndexIVFScalarQuantizer, "
-            "IndexFlat and IndexIVFPQ");
-
-    std::vector<faiss::Index*> shards(n);
-
-    for (long i = 0; i < n; i++) {
-        // make a shallow copy
-        if (reserveVecs)
-            sub_cloners[i].reserveVecs = (reserveVecs + n - 1) / n;
-
-        if (index_ivfpq) {
-            faiss::IndexIVFPQ idx2(
-                    index_ivfpq->quantizer,
-                    index_ivfpq->d,
-                    index_ivfpq->nlist,
-                    index_ivfpq->code_size,
-                    index_ivfpq->pq.nbits);
-            idx2.metric_type = index_ivfpq->metric_type;
-            idx2.pq = index_ivfpq->pq;
-            idx2.nprobe = index_ivfpq->nprobe;
-            idx2.use_precomputed_table = 0;
-            idx2.is_trained = index->is_trained;
-            copy_ivf_shard(index_ivfpq, &idx2, n, i);
-            shards[i] = sub_cloners[i].clone_Index(&idx2);
-        } else if (index_ivfflat) {
-            faiss::IndexIVFFlat idx2(
-                    index_ivfflat->quantizer,
-                    index->d,
-                    index_ivfflat->nlist,
-                    index_ivfflat->metric_type);
-            idx2.nprobe = index_ivfflat->nprobe;
-            idx2.is_trained = index->is_trained;
-            copy_ivf_shard(index_ivfflat, &idx2, n, i);
-            shards[i] = sub_cloners[i].clone_Index(&idx2);
-        } else if (index_ivfsq) {
-            faiss::IndexIVFScalarQuantizer idx2(
-                    index_ivfsq->quantizer,
-                    index->d,
-                    index_ivfsq->nlist,
-                    index_ivfsq->sq.qtype,
-                    index_ivfsq->metric_type,
-                    index_ivfsq->by_residual);
-
-            idx2.nprobe = index_ivfsq->nprobe;
-            idx2.is_trained = index->is_trained;
-            idx2.sq = index_ivfsq->sq;
-            copy_ivf_shard(index_ivfsq, &idx2, n, i);
-            shards[i] = sub_cloners[i].clone_Index(&idx2);
-        } else if (index_flat) {
-            faiss::IndexFlat idx2(index->d, index->metric_type);
-            shards[i] = sub_cloners[i].clone_Index(&idx2);
-            if (index->ntotal > 0) {
-                long i0 = index->ntotal * i / n;
-                long i1 = index->ntotal * (i + 1) / n;
-                shards[i]->add(i1 - i0, index_flat->get_xb() + i0 * index->d);
-            }
-        }
-    }
-
-    bool successive_ids = index_flat != nullptr;
-    faiss::IndexShards* res =
-            new faiss::IndexShards(index->d, true, successive_ids);
-
-    for (int i = 0; i < n; i++) {
-        res->add_shard(shards[i]);
-    }
-    res->own_fields = true;
-    FAISS_ASSERT(index->ntotal == res->ntotal);
-    return res;
-}
-
-Index* ToGpuClonerMultiple::clone_Index(const Index* index) {
-    long n = sub_cloners.size();
-    if (n == 1)
-        return sub_cloners[0].clone_Index(index);
-
-    if (dynamic_cast<const IndexFlat*>(index) ||
-        dynamic_cast<const faiss::IndexIVFFlat*>(index) ||
-        dynamic_cast<const faiss::IndexIVFScalarQuantizer*>(index) ||
-        dynamic_cast<const faiss::IndexIVFPQ*>(index)) {
-        if (!shard) {
-            IndexReplicas* res = new IndexReplicas();
-            for (auto& sub_cloner : sub_cloners) {
-                res->addIndex(sub_cloner.clone_Index(index));
-            }
-            res->own_fields = true;
-            return res;
-        } else {
-            return clone_Index_to_shards(index);
-        }
-    } else if (auto miq = dynamic_cast<const MultiIndexQuantizer*>(index)) {
-        if (verbose) {
-            printf("cloning MultiIndexQuantizer: "
-                   "will be valid only for search k=1\n");
-        }
-        const ProductQuantizer& pq = miq->pq;
-        IndexSplitVectors* splitv = new IndexSplitVectors(pq.d, true);
-        splitv->own_fields = true;
-
-        for (int m = 0; m < pq.M; m++) {
-            // which GPU(s) will be assigned to this sub-quantizer
-
-            long i0 = m * n / pq.M;
-            long i1 = pq.M <= n ? (m + 1) * n / pq.M : i0 + 1;
-            std::vector<ToGpuCloner> sub_cloners_2;
-            sub_cloners_2.insert(
-                    sub_cloners_2.begin(),
-                    sub_cloners.begin() + i0,
-                    sub_cloners.begin() + i1);
-            ToGpuClonerMultiple cm(sub_cloners_2, *this);
-            IndexFlatL2 idxc(pq.dsub);
-            idxc.add(pq.ksub, pq.centroids.data() + m * pq.d * pq.ksub);
-            Index* idx2 = cm.clone_Index(&idxc);
-            splitv->add_sub_index(idx2);
-        }
-        return splitv;
-    } else {
-        return Cloner::clone_Index(index);
-    }
-}
-
-faiss::Index* index_cpu_to_gpu_multiple(
-        std::vector<GpuResourcesProvider*>& provider,
-        std::vector<int>& devices,
-        const faiss::Index* index,
-        const GpuMultipleClonerOptions* options) {
-    GpuMultipleClonerOptions defaults;
-    ToGpuClonerMultiple cl(provider, devices, options ? *options : defaults);
-    return cl.clone_Index(index);
-}
-
-GpuProgressiveDimIndexFactory::GpuProgressiveDimIndexFactory(int ngpu) {
-    FAISS_THROW_IF_NOT(ngpu >= 1);
-    devices.resize(ngpu);
-    vres.resize(ngpu);
-
-    for (int i = 0; i < ngpu; i++) {
-        vres[i] = new StandardGpuResources();
-        devices[i] = i;
-    }
-    ncall = 0;
-}
-
-GpuProgressiveDimIndexFactory::~GpuProgressiveDimIndexFactory() {
-    for (int i = 0; i < vres.size(); i++) {
-        delete vres[i];
-    }
-}
-
-Index* GpuProgressiveDimIndexFactory::operator()(int dim) {
-    IndexFlatL2 index(dim);
-    ncall++;
-    return index_cpu_to_gpu_multiple(vres, devices, &index, &options);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuCloner.h b/faiss/gpu_cuda/GpuCloner.h
deleted file mode 100644
index c692ec69b63a501317c5c4a8fd7d0cf486ed94f5..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuCloner.h
+++ /dev/null
@@ -1,99 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <vector>
-
-#include <faiss/Clustering.h>
-#include <faiss/Index.h>
-#include <faiss/clone_index.h>
-#include <faiss/gpu/GpuClonerOptions.h>
-#include <faiss/gpu/GpuIndex.h>
-#include <faiss/gpu/GpuIndicesOptions.h>
-namespace faiss {
-namespace gpu {
-
-class GpuResourcesProvider;
-
-/// Cloner specialized for GPU -> CPU
-struct ToCPUCloner : faiss::Cloner {
-    void merge_index(Index* dst, Index* src, bool successive_ids);
-    Index* clone_Index(const Index* index) override;
-};
-
-/// Cloner specialized for CPU -> 1 GPU
-struct ToGpuCloner : faiss::Cloner, GpuClonerOptions {
-    GpuResourcesProvider* provider;
-    int device;
-
-    ToGpuCloner(
-            GpuResourcesProvider* prov,
-            int device,
-            const GpuClonerOptions& options);
-
-    Index* clone_Index(const Index* index) override;
-};
-
-/// Cloner specialized for CPU -> multiple GPUs
-struct ToGpuClonerMultiple : faiss::Cloner, GpuMultipleClonerOptions {
-    std::vector<ToGpuCloner> sub_cloners;
-
-    ToGpuClonerMultiple(
-            std::vector<GpuResourcesProvider*>& provider,
-            std::vector<int>& devices,
-            const GpuMultipleClonerOptions& options);
-
-    ToGpuClonerMultiple(
-            const std::vector<ToGpuCloner>& sub_cloners,
-            const GpuMultipleClonerOptions& options);
-
-    void copy_ivf_shard(
-            const IndexIVF* index_ivf,
-            IndexIVF* idx2,
-            long n,
-            long i);
-
-    Index* clone_Index_to_shards(const Index* index);
-
-    /// main function
-    Index* clone_Index(const Index* index) override;
-};
-
-/// converts any GPU index inside gpu_index to a CPU index
-faiss::Index* index_gpu_to_cpu(const faiss::Index* gpu_index);
-
-/// converts any CPU index that can be converted to GPU
-faiss::Index* index_cpu_to_gpu(
-        GpuResourcesProvider* provider,
-        int device,
-        const faiss::Index* index,
-        const GpuClonerOptions* options = nullptr);
-
-faiss::Index* index_cpu_to_gpu_multiple(
-        std::vector<GpuResourcesProvider*>& provider,
-        std::vector<int>& devices,
-        const faiss::Index* index,
-        const GpuMultipleClonerOptions* options = nullptr);
-
-/// index factory for the ProgressiveDimClustering object
-
-struct GpuProgressiveDimIndexFactory : ProgressiveDimIndexFactory {
-    GpuMultipleClonerOptions options;
-    std::vector<GpuResourcesProvider*> vres;
-    std::vector<int> devices;
-    int ncall;
-
-    explicit GpuProgressiveDimIndexFactory(int ngpu);
-
-    Index* operator()(int dim) override;
-
-    virtual ~GpuProgressiveDimIndexFactory() override;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuClonerOptions.cpp b/faiss/gpu_cuda/GpuClonerOptions.cpp
deleted file mode 100644
index 7ed1f695e2bb962d7d9a7e1398fb74da1d440102..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuClonerOptions.cpp
+++ /dev/null
@@ -1,26 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuClonerOptions.h>
-
-namespace faiss {
-namespace gpu {
-
-GpuClonerOptions::GpuClonerOptions()
-        : indicesOptions(INDICES_64_BIT),
-          useFloat16CoarseQuantizer(false),
-          useFloat16(false),
-          usePrecomputed(false),
-          reserveVecs(0),
-          storeTransposed(false),
-          verbose(false) {}
-
-GpuMultipleClonerOptions::GpuMultipleClonerOptions()
-        : shard(false), shard_type(1) {}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuClonerOptions.h b/faiss/gpu_cuda/GpuClonerOptions.h
deleted file mode 100644
index 2a8705a12a1bef7003a9532cef35bc2f1000ab80..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuClonerOptions.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/GpuIndicesOptions.h>
-
-namespace faiss {
-namespace gpu {
-
-/// set some options on how to copy to GPU
-struct GpuClonerOptions {
-    GpuClonerOptions();
-
-    /// how should indices be stored on index types that support indices
-    /// (anything but GpuIndexFlat*)?
-    IndicesOptions indicesOptions;
-
-    /// is the coarse quantizer in float16?
-    bool useFloat16CoarseQuantizer;
-
-    /// for GpuIndexIVFFlat, is storage in float16?
-    /// for GpuIndexIVFPQ, are intermediate calculations in float16?
-    bool useFloat16;
-
-    /// use precomputed tables?
-    bool usePrecomputed;
-
-    /// reserve vectors in the invfiles?
-    long reserveVecs;
-
-    /// For GpuIndexFlat, store data in transposed layout?
-    bool storeTransposed;
-
-    /// Set verbose options on the index
-    bool verbose;
-};
-
-struct GpuMultipleClonerOptions : public GpuClonerOptions {
-    GpuMultipleClonerOptions();
-
-    /// Whether to shard the index across GPUs, versus replication
-    /// across GPUs
-    bool shard;
-
-    /// IndexIVF::copy_subset_to subset type
-    int shard_type;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuDistance.cu b/faiss/gpu_cuda/GpuDistance.cu
deleted file mode 100644
index 6e480a239d4bd8a01b90382c262e37e08e860267..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuDistance.cu
+++ /dev/null
@@ -1,234 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuDistance.h>
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/impl/FaissAssert.h>
-#include <faiss/gpu/impl/Distance.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/CopyUtils.cuh>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-template <typename T>
-void bfKnnConvert(GpuResourcesProvider* prov, const GpuDistanceParams& args) {
-    // Validate the input data
-    FAISS_THROW_IF_NOT_MSG(
-            args.k > 0 || args.k == -1,
-            "bfKnn: k must be > 0 for top-k reduction, "
-            "or -1 for all pairwise distances");
-    FAISS_THROW_IF_NOT_MSG(args.dims > 0, "bfKnn: dims must be > 0");
-    FAISS_THROW_IF_NOT_MSG(
-            args.numVectors > 0, "bfKnn: numVectors must be > 0");
-    FAISS_THROW_IF_NOT_MSG(
-            args.vectors, "bfKnn: vectors must be provided (passed null)");
-    FAISS_THROW_IF_NOT_MSG(
-            args.numQueries > 0, "bfKnn: numQueries must be > 0");
-    FAISS_THROW_IF_NOT_MSG(
-            args.queries, "bfKnn: queries must be provided (passed null)");
-    FAISS_THROW_IF_NOT_MSG(
-            args.outDistances,
-            "bfKnn: outDistances must be provided (passed null)");
-    FAISS_THROW_IF_NOT_MSG(
-            args.outIndices || args.k == -1,
-            "bfKnn: outIndices must be provided (passed null)");
-
-    // Don't let the resources go out of scope
-    auto resImpl = prov->getResources();
-    auto res = resImpl.get();
-    auto device = getCurrentDevice();
-    auto stream = res->getDefaultStreamCurrentDevice();
-
-    auto tVectors = toDeviceTemporary<T, 2>(
-            res,
-            device,
-            const_cast<T*>(reinterpret_cast<const T*>(args.vectors)),
-            stream,
-            {args.vectorsRowMajor ? args.numVectors : args.dims,
-             args.vectorsRowMajor ? args.dims : args.numVectors});
-    auto tQueries = toDeviceTemporary<T, 2>(
-            res,
-            device,
-            const_cast<T*>(reinterpret_cast<const T*>(args.queries)),
-            stream,
-            {args.queriesRowMajor ? args.numQueries : args.dims,
-             args.queriesRowMajor ? args.dims : args.numQueries});
-
-    DeviceTensor<float, 1, true> tVectorNorms;
-    if (args.vectorNorms) {
-        tVectorNorms = toDeviceTemporary<float, 1>(
-                res,
-                device,
-                const_cast<float*>(args.vectorNorms),
-                stream,
-                {args.numVectors});
-    }
-
-    auto tOutDistances = toDeviceTemporary<float, 2>(
-            res,
-            device,
-            args.outDistances,
-            stream,
-            {args.numQueries, args.k == -1 ? args.numVectors : args.k});
-
-    if (args.k == -1) {
-        // Reporting all pairwise distances
-        allPairwiseDistanceOnDevice<T>(
-                res,
-                device,
-                stream,
-                tVectors,
-                args.vectorsRowMajor,
-                args.vectorNorms ? &tVectorNorms : nullptr,
-                tQueries,
-                args.queriesRowMajor,
-                args.metric,
-                args.metricArg,
-                tOutDistances);
-    } else if (args.outIndicesType == IndicesDataType::I64) {
-        // The brute-force API only supports an interface for i32 indices only,
-        // so we must create an output i32 buffer then convert back
-        DeviceTensor<int, 2, true> tOutIntIndices(
-                res,
-                makeTempAlloc(AllocType::Other, stream),
-                {args.numQueries, args.k});
-
-        // Since we've guaranteed that all arguments are on device, call the
-        // implementation
-        bfKnnOnDevice<T>(
-                res,
-                device,
-                stream,
-                tVectors,
-                args.vectorsRowMajor,
-                args.vectorNorms ? &tVectorNorms : nullptr,
-                tQueries,
-                args.queriesRowMajor,
-                args.k,
-                args.metric,
-                args.metricArg,
-                tOutDistances,
-                tOutIntIndices,
-                args.ignoreOutDistances);
-
-        // Convert and copy int indices out
-        auto tOutIndices = toDeviceTemporary<Index::idx_t, 2>(
-                res,
-                device,
-                (Index::idx_t*)args.outIndices,
-                stream,
-                {args.numQueries, args.k});
-
-        // Convert int to idx_t
-        convertTensor<int, Index::idx_t, 2>(
-                stream, tOutIntIndices, tOutIndices);
-
-        // Copy back if necessary
-        fromDevice<Index::idx_t, 2>(
-                tOutIndices, (Index::idx_t*)args.outIndices, stream);
-
-    } else if (args.outIndicesType == IndicesDataType::I32) {
-        // We can use the brute-force API directly, as it takes i32 indices
-        // FIXME: convert to int32_t everywhere?
-        static_assert(sizeof(int) == 4, "");
-
-        auto tOutIntIndices = toDeviceTemporary<int, 2>(
-                res,
-                device,
-                (int*)args.outIndices,
-                stream,
-                {args.numQueries, args.k});
-
-        // Since we've guaranteed that all arguments are on device, call the
-        // implementation
-        bfKnnOnDevice<T>(
-                res,
-                device,
-                stream,
-                tVectors,
-                args.vectorsRowMajor,
-                args.vectorNorms ? &tVectorNorms : nullptr,
-                tQueries,
-                args.queriesRowMajor,
-                args.k,
-                args.metric,
-                args.metricArg,
-                tOutDistances,
-                tOutIntIndices,
-                args.ignoreOutDistances);
-
-        // Copy back if necessary
-        fromDevice<int, 2>(tOutIntIndices, (int*)args.outIndices, stream);
-    } else {
-        FAISS_THROW_MSG("unknown outIndicesType");
-    }
-
-    // Copy distances back if necessary
-    fromDevice<float, 2>(tOutDistances, args.outDistances, stream);
-}
-
-void bfKnn(GpuResourcesProvider* res, const GpuDistanceParams& args) {
-    // For now, both vectors and queries must be of the same data type
-    FAISS_THROW_IF_NOT_MSG(
-            args.vectorType == args.queryType,
-            "limitation: both vectorType and queryType must currently "
-            "be the same (F32 or F16");
-
-    if (args.vectorType == DistanceDataType::F32) {
-        bfKnnConvert<float>(res, args);
-    } else if (args.vectorType == DistanceDataType::F16) {
-        bfKnnConvert<half>(res, args);
-    } else {
-        FAISS_THROW_MSG("unknown vectorType");
-    }
-}
-
-// legacy version
-void bruteForceKnn(
-        GpuResourcesProvider* res,
-        faiss::MetricType metric,
-        // A region of memory size numVectors x dims, with dims
-        // innermost
-        const float* vectors,
-        bool vectorsRowMajor,
-        int numVectors,
-        // A region of memory size numQueries x dims, with dims
-        // innermost
-        const float* queries,
-        bool queriesRowMajor,
-        int numQueries,
-        int dims,
-        int k,
-        // A region of memory size numQueries x k, with k
-        // innermost
-        float* outDistances,
-        // A region of memory size numQueries x k, with k
-        // innermost
-        Index::idx_t* outIndices) {
-    std::cerr << "bruteForceKnn is deprecated; call bfKnn instead" << std::endl;
-
-    GpuDistanceParams args;
-    args.metric = metric;
-    args.k = k;
-    args.dims = dims;
-    args.vectors = vectors;
-    args.vectorsRowMajor = vectorsRowMajor;
-    args.numVectors = numVectors;
-    args.queries = queries;
-    args.queriesRowMajor = queriesRowMajor;
-    args.numQueries = numQueries;
-    args.outDistances = outDistances;
-    args.outIndices = outIndices;
-
-    bfKnn(res, args);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuDistance.h b/faiss/gpu_cuda/GpuDistance.h
deleted file mode 100644
index f33cf1ec50c6e88ace47c526ad3cb5f358fdc41f..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuDistance.h
+++ /dev/null
@@ -1,157 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/Index.h>
-
-namespace faiss {
-namespace gpu {
-
-class GpuResourcesProvider;
-
-// Scalar type of the vector data
-enum class DistanceDataType {
-    F32 = 1,
-    F16,
-};
-
-// Scalar type of the indices data
-enum class IndicesDataType {
-    I64 = 1,
-    I32,
-};
-
-/// Arguments to brute-force GPU k-nearest neighbor searching
-struct GpuDistanceParams {
-    GpuDistanceParams()
-            : metric(faiss::MetricType::METRIC_L2),
-              metricArg(0),
-              k(0),
-              dims(0),
-              vectors(nullptr),
-              vectorType(DistanceDataType::F32),
-              vectorsRowMajor(true),
-              numVectors(0),
-              vectorNorms(nullptr),
-              queries(nullptr),
-              queryType(DistanceDataType::F32),
-              queriesRowMajor(true),
-              numQueries(0),
-              outDistances(nullptr),
-              ignoreOutDistances(false),
-              outIndicesType(IndicesDataType::I64),
-              outIndices(nullptr) {}
-
-    //
-    // Search parameters
-    //
-
-    /// Search parameter: distance metric
-    faiss::MetricType metric;
-
-    /// Search parameter: distance metric argument (if applicable)
-    /// For metric == METRIC_Lp, this is the p-value
-    float metricArg;
-
-    /// Search parameter: return k nearest neighbors
-    /// If the value provided is -1, then we report all pairwise distances
-    /// without top-k filtering
-    int k;
-
-    /// Vector dimensionality
-    int dims;
-
-    //
-    // Vectors being queried
-    //
-
-    /// If vectorsRowMajor is true, this is
-    /// numVectors x dims, with dims innermost; otherwise,
-    /// dims x numVectors, with numVectors innermost
-    const void* vectors;
-    DistanceDataType vectorType;
-    bool vectorsRowMajor;
-    int numVectors;
-
-    /// Precomputed L2 norms for each vector in `vectors`, which can be
-    /// optionally provided in advance to speed computation for METRIC_L2
-    const float* vectorNorms;
-
-    //
-    // The query vectors (i.e., find k-nearest neighbors in `vectors` for each
-    // of the `queries`
-    //
-
-    /// If queriesRowMajor is true, this is
-    /// numQueries x dims, with dims innermost; otherwise,
-    /// dims x numQueries, with numQueries innermost
-    const void* queries;
-    DistanceDataType queryType;
-    bool queriesRowMajor;
-    int numQueries;
-
-    //
-    // Output results
-    //
-
-    /// A region of memory size numQueries x k, with k
-    /// innermost (row major) if k > 0, or if k == -1, a region of memory of
-    /// size numQueries x numVectors
-    float* outDistances;
-
-    /// Do we only care about the indices reported, rather than the output
-    /// distances? Not used if k == -1 (all pairwise distances)
-    bool ignoreOutDistances;
-
-    /// A region of memory size numQueries x k, with k
-    /// innermost (row major). Not used if k == -1 (all pairwise distances)
-    IndicesDataType outIndicesType;
-    void* outIndices;
-};
-
-/// A wrapper for gpu/impl/Distance.cuh to expose direct brute-force k-nearest
-/// neighbor searches on an externally-provided region of memory (e.g., from a
-/// pytorch tensor).
-/// The data (vectors, queries, outDistances, outIndices) can be resident on the
-/// GPU or the CPU, but all calculations are performed on the GPU. If the result
-/// buffers are on the CPU, results will be copied back when done.
-///
-/// All GPU computation is performed on the current CUDA device, and ordered
-/// with respect to resources->getDefaultStreamCurrentDevice().
-///
-/// For each vector in `queries`, searches all of `vectors` to find its k
-/// nearest neighbors with respect to the given metric
-void bfKnn(GpuResourcesProvider* resources, const GpuDistanceParams& args);
-
-/// Deprecated legacy implementation
-void bruteForceKnn(
-        GpuResourcesProvider* resources,
-        faiss::MetricType metric,
-        // If vectorsRowMajor is true, this is
-        // numVectors x dims, with dims innermost; otherwise,
-        // dims x numVectors, with numVectors innermost
-        const float* vectors,
-        bool vectorsRowMajor,
-        int numVectors,
-        // If queriesRowMajor is true, this is
-        // numQueries x dims, with dims innermost; otherwise,
-        // dims x numQueries, with numQueries innermost
-        const float* queries,
-        bool queriesRowMajor,
-        int numQueries,
-        int dims,
-        int k,
-        // A region of memory size numQueries x k, with k
-        // innermost (row major)
-        float* outDistances,
-        // A region of memory size numQueries x k, with k
-        // innermost (row major)
-        Index::idx_t* outIndices);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuFaissAssert.h b/faiss/gpu_cuda/GpuFaissAssert.h
deleted file mode 100644
index 2f03a8c278e500840334352a801856d5528f14e6..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuFaissAssert.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#ifndef GPU_FAISS_ASSERT_INCLUDED
-#define GPU_FAISS_ASSERT_INCLUDED
-
-#include <cuda.h>
-#include <faiss/impl/FaissAssert.h>
-
-///
-/// Assertions
-///
-
-#ifdef __CUDA_ARCH__
-#define GPU_FAISS_ASSERT(X) assert(X)
-#define GPU_FAISS_ASSERT_MSG(X, MSG) assert(X)
-#define GPU_FAISS_ASSERT_FMT(X, FMT, ...) assert(X)
-#else
-#define GPU_FAISS_ASSERT(X) FAISS_ASSERT(X)
-#define GPU_FAISS_ASSERT_MSG(X, MSG) FAISS_ASSERT_MSG(X, MSG)
-#define GPU_FAISS_ASSERT_FMT(X, FMT, ...) FAISS_ASSERT_FMT(X, FMT, __VA_ARGS)
-#endif // __CUDA_ARCH__
-
-#endif
diff --git a/faiss/gpu_cuda/GpuIcmEncoder.cu b/faiss/gpu_cuda/GpuIcmEncoder.cu
deleted file mode 100644
index 434fae9e36db090ec04aadde3f2e1da778f0e0cd..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIcmEncoder.cu
+++ /dev/null
@@ -1,120 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuIcmEncoder.h>
-
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/utils/WorkerThread.h>
-#include <faiss/gpu/impl/IcmEncoder.cuh>
-
-#include <algorithm>
-
-namespace faiss {
-namespace gpu {
-
-///< A helper structure to support multi-GPU
-struct IcmEncoderShards {
-    std::vector<std::pair<
-            std::unique_ptr<IcmEncoderImpl>,
-            std::unique_ptr<WorkerThread>>>
-            workers;
-
-    void add(IcmEncoderImpl* encoder) {
-        workers.emplace_back(std::make_pair(
-                std::unique_ptr<IcmEncoderImpl>(encoder),
-                std::unique_ptr<WorkerThread>(new WorkerThread)));
-    }
-
-    IcmEncoderImpl* at(int idx) {
-        return workers[idx].first.get();
-    }
-
-    ///< call f(idx, encoder) for each encoder
-    void runOnShards(std::function<void(int, IcmEncoderImpl*)> f) {
-        std::vector<std::future<bool>> v;
-
-        for (int i = 0; i < this->workers.size(); ++i) {
-            auto& p = this->workers[i];
-            auto encoder = p.first.get();
-            v.emplace_back(p.second->add([f, i, encoder]() { f(i, encoder); }));
-        }
-
-        for (int i = 0; i < v.size(); ++i) {
-            auto& fut = v[i];
-            fut.get(); // no exception handle, crash if any thread down
-        }
-    }
-
-    size_t size() {
-        return workers.size();
-    }
-};
-
-GpuIcmEncoder::GpuIcmEncoder(
-        const LocalSearchQuantizer* lsq,
-        const std::vector<GpuResourcesProvider*>& provs,
-        const std::vector<int>& devices)
-        : lsq::IcmEncoder(lsq), shards(new IcmEncoderShards()) {
-    // create an IcmEncoderImpl instance for each device.
-    for (size_t i = 0; i < provs.size(); i++) {
-        shards->add(new IcmEncoderImpl(
-                lsq->M, lsq->K, lsq->d, provs[i], devices[i]));
-    }
-}
-
-GpuIcmEncoder::~GpuIcmEncoder() {}
-
-void GpuIcmEncoder::set_binary_term() {
-    auto fn = [=](int idx, IcmEncoderImpl* encoder) {
-        encoder->setBinaryTerm(lsq->codebooks.data());
-    };
-    shards->runOnShards(fn);
-}
-
-void GpuIcmEncoder::encode(
-        int32_t* codes,
-        const float* x,
-        std::mt19937& gen,
-        size_t n,
-        size_t ils_iters) const {
-    size_t nshards = shards->size();
-    size_t shard_size = (n + nshards - 1) / nshards;
-
-    auto codebooks = lsq->codebooks.data();
-    auto M = lsq->M;
-    auto d = lsq->d;
-    auto nperts = lsq->nperts;
-    auto icm_iters = lsq->icm_iters;
-
-    auto seed = gen();
-
-    // split input data
-    auto fn = [=](int idx, IcmEncoderImpl* encoder) {
-        size_t i0 = idx * shard_size;
-        size_t ni = std::min(shard_size, n - i0);
-        auto xi = x + i0 * d;
-        auto ci = codes + i0 * M;
-        std::mt19937 geni(idx + seed); // different seed for each shard
-        encoder->encode(
-                ci, xi, codebooks, geni, ni, nperts, ils_iters, icm_iters);
-    };
-    shards->runOnShards(fn);
-}
-
-GpuIcmEncoderFactory::GpuIcmEncoderFactory(int ngpus) {
-    for (int i = 0; i < ngpus; i++) {
-        provs.push_back(new StandardGpuResources());
-        devices.push_back(i);
-    }
-}
-
-lsq::IcmEncoder* GpuIcmEncoderFactory::get(const LocalSearchQuantizer* lsq) {
-    return new GpuIcmEncoder(lsq, provs, devices);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIcmEncoder.h b/faiss/gpu_cuda/GpuIcmEncoder.h
deleted file mode 100644
index 463027bb6549f7008c154da5fe2b9b48e04d6d07..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIcmEncoder.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/impl/LocalSearchQuantizer.h>
-
-#include <memory>
-
-namespace faiss {
-namespace gpu {
-
-class GpuResourcesProvider;
-struct IcmEncoderShards;
-
-/** Perform LSQ encoding on GPU.
- *
- * Split input vectors to different devices and call IcmEncoderImpl::encode
- * to encode them
- */
-class GpuIcmEncoder : public lsq::IcmEncoder {
-   public:
-    GpuIcmEncoder(
-            const LocalSearchQuantizer* lsq,
-            const std::vector<GpuResourcesProvider*>& provs,
-            const std::vector<int>& devices);
-
-    ~GpuIcmEncoder();
-
-    GpuIcmEncoder(const GpuIcmEncoder&) = delete;
-    GpuIcmEncoder& operator=(const GpuIcmEncoder&) = delete;
-
-    void set_binary_term() override;
-
-    void encode(
-            int32_t* codes,
-            const float* x,
-            std::mt19937& gen,
-            size_t n,
-            size_t ils_iters) const override;
-
-   private:
-    std::unique_ptr<IcmEncoderShards> shards;
-};
-
-struct GpuIcmEncoderFactory : public lsq::IcmEncoderFactory {
-    explicit GpuIcmEncoderFactory(int ngpus = 1);
-
-    lsq::IcmEncoder* get(const LocalSearchQuantizer* lsq) override;
-
-    std::vector<GpuResourcesProvider*> provs;
-    std::vector<int> devices;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndex.cu b/faiss/gpu_cuda/GpuIndex.cu
deleted file mode 100644
index 78439920d896a76d93a2ebf523c7af314da9c4e2..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndex.cu
+++ /dev/null
@@ -1,522 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuIndex.h>
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/impl/FaissAssert.h>
-#include <faiss/gpu/utils/CopyUtils.cuh>
-
-#include <algorithm>
-#include <limits>
-#include <memory>
-
-namespace faiss {
-namespace gpu {
-
-/// Default CPU search size for which we use paged copies
-constexpr size_t kMinPageSize = (size_t)256 * 1024 * 1024;
-
-/// Size above which we page copies from the CPU to GPU (non-paged
-/// memory usage)
-constexpr size_t kNonPinnedPageSize = (size_t)256 * 1024 * 1024;
-
-// Default size for which we page add or search
-constexpr size_t kAddPageSize = (size_t)256 * 1024 * 1024;
-
-// Or, maximum number of vectors to consider per page of add or search
-constexpr size_t kAddVecSize = (size_t)512 * 1024;
-
-// Use a smaller search size, as precomputed code usage on IVFPQ
-// requires substantial amounts of memory
-// FIXME: parameterize based on algorithm need
-constexpr size_t kSearchVecSize = (size_t)32 * 1024;
-
-GpuIndex::GpuIndex(
-        std::shared_ptr<GpuResources> resources,
-        int dims,
-        faiss::MetricType metric,
-        float metricArg,
-        GpuIndexConfig config)
-        : Index(dims, metric),
-          resources_(resources),
-          config_(config),
-          minPagedSize_(kMinPageSize) {
-    FAISS_THROW_IF_NOT_FMT(
-            config_.device < getNumDevices(),
-            "Invalid GPU device %d",
-            config_.device);
-
-    FAISS_THROW_IF_NOT_MSG(dims > 0, "Invalid number of dimensions");
-
-    FAISS_THROW_IF_NOT_FMT(
-            config_.memorySpace == MemorySpace::Device ||
-                    (config_.memorySpace == MemorySpace::Unified &&
-                     getFullUnifiedMemSupport(config_.device)),
-            "Device %d does not support full CUDA 8 Unified Memory (CC 6.0+)",
-            config.device);
-
-    metric_arg = metricArg;
-
-    FAISS_ASSERT((bool)resources_);
-    resources_->initializeForDevice(config_.device);
-}
-
-int GpuIndex::getDevice() const {
-    return config_.device;
-}
-
-void GpuIndex::copyFrom(const faiss::Index* index) {
-    d = index->d;
-    metric_type = index->metric_type;
-    metric_arg = index->metric_arg;
-    ntotal = index->ntotal;
-    is_trained = index->is_trained;
-}
-
-void GpuIndex::copyTo(faiss::Index* index) const {
-    index->d = d;
-    index->metric_type = metric_type;
-    index->metric_arg = metric_arg;
-    index->ntotal = ntotal;
-    index->is_trained = is_trained;
-}
-
-void GpuIndex::setMinPagingSize(size_t size) {
-    minPagedSize_ = size;
-}
-
-size_t GpuIndex::getMinPagingSize() const {
-    return minPagedSize_;
-}
-
-void GpuIndex::add(Index::idx_t n, const float* x) {
-    // Pass to add_with_ids
-    add_with_ids(n, x, nullptr);
-}
-
-void GpuIndex::add_with_ids(
-        Index::idx_t n,
-        const float* x,
-        const Index::idx_t* ids) {
-    FAISS_THROW_IF_NOT_MSG(this->is_trained, "Index not trained");
-
-    // For now, only support <= max int results
-    FAISS_THROW_IF_NOT_FMT(
-            n <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports up to %d indices",
-            std::numeric_limits<int>::max());
-
-    if (n == 0) {
-        // nothing to add
-        return;
-    }
-
-    std::vector<Index::idx_t> generatedIds;
-
-    // Generate IDs if we need them
-    if (!ids && addImplRequiresIDs_()) {
-        generatedIds = std::vector<Index::idx_t>(n);
-
-        for (Index::idx_t i = 0; i < n; ++i) {
-            generatedIds[i] = this->ntotal + i;
-        }
-    }
-
-    DeviceScope scope(config_.device);
-    addPaged_((int)n, x, ids ? ids : generatedIds.data());
-}
-
-void GpuIndex::addPaged_(int n, const float* x, const Index::idx_t* ids) {
-    if (n > 0) {
-        size_t totalSize = (size_t)n * this->d * sizeof(float);
-
-        if (totalSize > kAddPageSize || n > kAddVecSize) {
-            // How many vectors fit into kAddPageSize?
-            size_t maxNumVecsForPageSize =
-                    kAddPageSize / ((size_t)this->d * sizeof(float));
-
-            // Always add at least 1 vector, if we have huge vectors
-            maxNumVecsForPageSize = std::max(maxNumVecsForPageSize, (size_t)1);
-
-            size_t tileSize = std::min((size_t)n, maxNumVecsForPageSize);
-            tileSize = std::min(tileSize, kSearchVecSize);
-
-            for (size_t i = 0; i < (size_t)n; i += tileSize) {
-                size_t curNum = std::min(tileSize, n - i);
-
-                addPage_(
-                        curNum,
-                        x + i * (size_t)this->d,
-                        ids ? ids + i : nullptr);
-            }
-        } else {
-            addPage_(n, x, ids);
-        }
-    }
-}
-
-void GpuIndex::addPage_(int n, const float* x, const Index::idx_t* ids) {
-    // At this point, `x` can be resident on CPU or GPU, and `ids` may be
-    // resident on CPU, GPU or may be null.
-    //
-    // Before continuing, we guarantee that all data will be resident on the
-    // GPU.
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    auto vecs = toDeviceTemporary<float, 2>(
-            resources_.get(),
-            config_.device,
-            const_cast<float*>(x),
-            stream,
-            {n, this->d});
-
-    if (ids) {
-        auto indices = toDeviceTemporary<Index::idx_t, 1>(
-                resources_.get(),
-                config_.device,
-                const_cast<Index::idx_t*>(ids),
-                stream,
-                {n});
-
-        addImpl_(n, vecs.data(), ids ? indices.data() : nullptr);
-    } else {
-        addImpl_(n, vecs.data(), nullptr);
-    }
-}
-
-void GpuIndex::assign(
-        Index::idx_t n,
-        const float* x,
-        Index::idx_t* labels,
-        Index::idx_t k) const {
-    FAISS_THROW_IF_NOT_MSG(this->is_trained, "Index not trained");
-
-    // For now, only support <= max int results
-    FAISS_THROW_IF_NOT_FMT(
-            n <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports up to %d indices",
-            std::numeric_limits<int>::max());
-
-    // Maximum k-selection supported is based on the CUDA SDK
-    FAISS_THROW_IF_NOT_FMT(
-            k <= (Index::idx_t)getMaxKSelection(),
-            "GPU index only supports k <= %d (requested %d)",
-            getMaxKSelection(),
-            (int)k); // select limitation
-
-    DeviceScope scope(config_.device);
-    auto stream = resources_->getDefaultStream(config_.device);
-
-    // We need to create a throw-away buffer for distances, which we don't use
-    // but which we do need for the search call
-    DeviceTensor<float, 2, true> distances(
-            resources_.get(),
-            makeTempAlloc(AllocType::Other, stream),
-            {(int)n, (int)k});
-
-    // Forward to search
-    search(n, x, k, distances.data(), labels);
-}
-
-void GpuIndex::search(
-        Index::idx_t n,
-        const float* x,
-        Index::idx_t k,
-        float* distances,
-        Index::idx_t* labels) const {
-    FAISS_THROW_IF_NOT(k > 0);
-
-    FAISS_THROW_IF_NOT_MSG(this->is_trained, "Index not trained");
-
-    // For now, only support <= max int results
-    FAISS_THROW_IF_NOT_FMT(
-            n <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports up to %d indices",
-            std::numeric_limits<int>::max());
-
-    // Maximum k-selection supported is based on the CUDA SDK
-    FAISS_THROW_IF_NOT_FMT(
-            k <= (Index::idx_t)getMaxKSelection(),
-            "GPU index only supports k <= %d (requested %d)",
-            getMaxKSelection(),
-            (int)k); // select limitation
-
-    if (n == 0 || k == 0) {
-        // nothing to search
-        return;
-    }
-
-    DeviceScope scope(config_.device);
-    auto stream = resources_->getDefaultStream(config_.device);
-
-    // We guarantee that the searchImpl_ will be called with device-resident
-    // pointers.
-
-    // The input vectors may be too large for the GPU, but we still
-    // assume that the output distances and labels are not.
-    // Go ahead and make space for output distances and labels on the
-    // GPU.
-    // If we reach a point where all inputs are too big, we can add
-    // another level of tiling.
-    auto outDistances = toDeviceTemporary<float, 2>(
-            resources_.get(),
-            config_.device,
-            distances,
-            stream,
-            {(int)n, (int)k});
-
-    auto outLabels = toDeviceTemporary<Index::idx_t, 2>(
-            resources_.get(), config_.device, labels, stream, {(int)n, (int)k});
-
-    bool usePaged = false;
-
-    if (getDeviceForAddress(x) == -1) {
-        // It is possible that the user is querying for a vector set size
-        // `x` that won't fit on the GPU.
-        // In this case, we will have to handle paging of the data from CPU
-        // -> GPU.
-        // Currently, we don't handle the case where the output data won't
-        // fit on the GPU (e.g., n * k is too large for the GPU memory).
-        size_t dataSize = (size_t)n * this->d * sizeof(float);
-
-        if (dataSize >= minPagedSize_) {
-            searchFromCpuPaged_(n, x, k, outDistances.data(), outLabels.data());
-            usePaged = true;
-        }
-    }
-
-    if (!usePaged) {
-        searchNonPaged_(n, x, k, outDistances.data(), outLabels.data());
-    }
-
-    // Copy back if necessary
-    fromDevice<float, 2>(outDistances, distances, stream);
-    fromDevice<Index::idx_t, 2>(outLabels, labels, stream);
-}
-
-void GpuIndex::searchNonPaged_(
-        int n,
-        const float* x,
-        int k,
-        float* outDistancesData,
-        Index::idx_t* outIndicesData) const {
-    auto stream = resources_->getDefaultStream(config_.device);
-
-    // Make sure arguments are on the device we desire; use temporary
-    // memory allocations to move it if necessary
-    auto vecs = toDeviceTemporary<float, 2>(
-            resources_.get(),
-            config_.device,
-            const_cast<float*>(x),
-            stream,
-            {n, (int)this->d});
-
-    searchImpl_(n, vecs.data(), k, outDistancesData, outIndicesData);
-}
-
-void GpuIndex::searchFromCpuPaged_(
-        int n,
-        const float* x,
-        int k,
-        float* outDistancesData,
-        Index::idx_t* outIndicesData) const {
-    Tensor<float, 2, true> outDistances(outDistancesData, {n, k});
-    Tensor<Index::idx_t, 2, true> outIndices(outIndicesData, {n, k});
-
-    // Is pinned memory available?
-    auto pinnedAlloc = resources_->getPinnedMemory();
-    int pageSizeInVecs =
-            (int)((pinnedAlloc.second / 2) / (sizeof(float) * this->d));
-
-    if (!pinnedAlloc.first || pageSizeInVecs < 1) {
-        // Just page without overlapping copy with compute
-        int batchSize = utils::nextHighestPowerOf2(
-                (int)((size_t)kNonPinnedPageSize / (sizeof(float) * this->d)));
-
-        for (int cur = 0; cur < n; cur += batchSize) {
-            int num = std::min(batchSize, n - cur);
-
-            auto outDistancesSlice = outDistances.narrowOutermost(cur, num);
-            auto outIndicesSlice = outIndices.narrowOutermost(cur, num);
-
-            searchNonPaged_(
-                    num,
-                    x + (size_t)cur * this->d,
-                    k,
-                    outDistancesSlice.data(),
-                    outIndicesSlice.data());
-        }
-
-        return;
-    }
-
-    //
-    // Pinned memory is available, so we can overlap copy with compute.
-    // We use two pinned memory buffers, and triple-buffer the
-    // procedure:
-    //
-    // 1 CPU copy -> pinned
-    // 2 pinned copy -> GPU
-    // 3 GPU compute
-    //
-    // 1 2 3 1 2 3 ...   (pinned buf A)
-    //   1 2 3 1 2 ...   (pinned buf B)
-    //     1 2 3 1 ...   (pinned buf A)
-    // time ->
-    //
-    auto defaultStream = resources_->getDefaultStream(config_.device);
-    auto copyStream = resources_->getAsyncCopyStream(config_.device);
-
-    FAISS_ASSERT(
-            (size_t)pageSizeInVecs * this->d <=
-            (size_t)std::numeric_limits<int>::max());
-
-    float* bufPinnedA = (float*)pinnedAlloc.first;
-    float* bufPinnedB = bufPinnedA + (size_t)pageSizeInVecs * this->d;
-    float* bufPinned[2] = {bufPinnedA, bufPinnedB};
-
-    // Reserve space on the GPU for the destination of the pinned buffer
-    // copy
-    DeviceTensor<float, 2, true> bufGpuA(
-            resources_.get(),
-            makeTempAlloc(AllocType::Other, defaultStream),
-            {(int)pageSizeInVecs, (int)this->d});
-    DeviceTensor<float, 2, true> bufGpuB(
-            resources_.get(),
-            makeTempAlloc(AllocType::Other, defaultStream),
-            {(int)pageSizeInVecs, (int)this->d});
-    DeviceTensor<float, 2, true>* bufGpus[2] = {&bufGpuA, &bufGpuB};
-
-    // Copy completion events for the pinned buffers
-    std::unique_ptr<CudaEvent> eventPinnedCopyDone[2];
-
-    // Execute completion events for the GPU buffers
-    std::unique_ptr<CudaEvent> eventGpuExecuteDone[2];
-
-    // All offsets are in terms of number of vectors; they remain within
-    // int bounds (as this function only handles max in vectors)
-
-    // Current start offset for buffer 1
-    int cur1 = 0;
-    int cur1BufIndex = 0;
-
-    // Current start offset for buffer 2
-    int cur2 = -1;
-    int cur2BufIndex = 0;
-
-    // Current start offset for buffer 3
-    int cur3 = -1;
-    int cur3BufIndex = 0;
-
-    while (cur3 < n) {
-        // Start async pinned -> GPU copy first (buf 2)
-        if (cur2 != -1 && cur2 < n) {
-            // Copy pinned to GPU
-            int numToCopy = std::min(pageSizeInVecs, n - cur2);
-
-            // Make sure any previous execution has completed before continuing
-            auto& eventPrev = eventGpuExecuteDone[cur2BufIndex];
-            if (eventPrev.get()) {
-                eventPrev->streamWaitOnEvent(copyStream);
-            }
-
-            CUDA_VERIFY(cudaMemcpyAsync(
-                    bufGpus[cur2BufIndex]->data(),
-                    bufPinned[cur2BufIndex],
-                    (size_t)numToCopy * this->d * sizeof(float),
-                    cudaMemcpyHostToDevice,
-                    copyStream));
-
-            // Mark a completion event in this stream
-            eventPinnedCopyDone[cur2BufIndex].reset(new CudaEvent(copyStream));
-
-            // We pick up from here
-            cur3 = cur2;
-            cur2 += numToCopy;
-            cur2BufIndex = (cur2BufIndex == 0) ? 1 : 0;
-        }
-
-        if (cur3 != -1 && cur3 < n) {
-            // Process on GPU
-            int numToProcess = std::min(pageSizeInVecs, n - cur3);
-
-            // Make sure the previous copy has completed before continuing
-            auto& eventPrev = eventPinnedCopyDone[cur3BufIndex];
-            FAISS_ASSERT(eventPrev.get());
-
-            eventPrev->streamWaitOnEvent(defaultStream);
-
-            // Create tensor wrappers
-            // DeviceTensor<float, 2, true> input(bufGpus[cur3BufIndex]->data(),
-            //                                    {numToProcess, this->d});
-            auto outDistancesSlice =
-                    outDistances.narrowOutermost(cur3, numToProcess);
-            auto outIndicesSlice =
-                    outIndices.narrowOutermost(cur3, numToProcess);
-
-            searchImpl_(
-                    numToProcess,
-                    bufGpus[cur3BufIndex]->data(),
-                    k,
-                    outDistancesSlice.data(),
-                    outIndicesSlice.data());
-
-            // Create completion event
-            eventGpuExecuteDone[cur3BufIndex].reset(
-                    new CudaEvent(defaultStream));
-
-            // We pick up from here
-            cur3BufIndex = (cur3BufIndex == 0) ? 1 : 0;
-            cur3 += numToProcess;
-        }
-
-        if (cur1 < n) {
-            // Copy CPU mem to CPU pinned
-            int numToCopy = std::min(pageSizeInVecs, n - cur1);
-
-            // Make sure any previous copy has completed before continuing
-            auto& eventPrev = eventPinnedCopyDone[cur1BufIndex];
-            if (eventPrev.get()) {
-                eventPrev->cpuWaitOnEvent();
-            }
-
-            memcpy(bufPinned[cur1BufIndex],
-                   x + (size_t)cur1 * this->d,
-                   (size_t)numToCopy * this->d * sizeof(float));
-
-            // We pick up from here
-            cur2 = cur1;
-            cur1 += numToCopy;
-            cur1BufIndex = (cur1BufIndex == 0) ? 1 : 0;
-        }
-    }
-}
-
-void GpuIndex::compute_residual(
-        const float* x,
-        float* residual,
-        Index::idx_t key) const {
-    FAISS_THROW_MSG("compute_residual not implemented for this type of index");
-}
-
-void GpuIndex::compute_residual_n(
-        Index::idx_t n,
-        const float* xs,
-        float* residuals,
-        const Index::idx_t* keys) const {
-    FAISS_THROW_MSG(
-            "compute_residual_n not implemented for this type of index");
-}
-
-std::shared_ptr<GpuResources> GpuIndex::getResources() {
-    return resources_;
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndex.h b/faiss/gpu_cuda/GpuIndex.h
deleted file mode 100644
index 58cffff91748731dba0121e1c84e383193ea4144..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndex.h
+++ /dev/null
@@ -1,153 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/Index.h>
-#include <faiss/gpu/GpuResources.h>
-
-namespace faiss {
-namespace gpu {
-
-struct GpuIndexConfig {
-    inline GpuIndexConfig() : device(0), memorySpace(MemorySpace::Device) {}
-
-    /// GPU device on which the index is resident
-    int device;
-
-    /// What memory space to use for primary storage.
-    /// On Pascal and above (CC 6+) architectures, allows GPUs to use
-    /// more memory than is available on the GPU.
-    MemorySpace memorySpace;
-};
-
-class GpuIndex : public faiss::Index {
-   public:
-    GpuIndex(
-            std::shared_ptr<GpuResources> resources,
-            int dims,
-            faiss::MetricType metric,
-            float metricArg,
-            GpuIndexConfig config);
-
-    /// Returns the device that this index is resident on
-    int getDevice() const;
-
-    /// Returns a reference to our GpuResources object that manages memory,
-    /// stream and handle resources on the GPU
-    std::shared_ptr<GpuResources> getResources();
-
-    /// Set the minimum data size for searches (in MiB) for which we use
-    /// CPU -> GPU paging
-    void setMinPagingSize(size_t size);
-
-    /// Returns the current minimum data size for paged searches
-    size_t getMinPagingSize() const;
-
-    /// `x` can be resident on the CPU or any GPU; copies are performed
-    /// as needed
-    /// Handles paged adds if the add set is too large; calls addInternal_
-    void add(Index::idx_t, const float* x) override;
-
-    /// `x` and `ids` can be resident on the CPU or any GPU; copies are
-    /// performed as needed
-    /// Handles paged adds if the add set is too large; calls addInternal_
-    void add_with_ids(Index::idx_t n, const float* x, const Index::idx_t* ids)
-            override;
-
-    /// `x` and `labels` can be resident on the CPU or any GPU; copies are
-    /// performed as needed
-    void assign(
-            Index::idx_t n,
-            const float* x,
-            Index::idx_t* labels,
-            Index::idx_t k = 1) const override;
-
-    /// `x`, `distances` and `labels` can be resident on the CPU or any
-    /// GPU; copies are performed as needed
-    void search(
-            Index::idx_t n,
-            const float* x,
-            Index::idx_t k,
-            float* distances,
-            Index::idx_t* labels) const override;
-
-    /// Overridden to force GPU indices to provide their own GPU-friendly
-    /// implementation
-    void compute_residual(const float* x, float* residual, Index::idx_t key)
-            const override;
-
-    /// Overridden to force GPU indices to provide their own GPU-friendly
-    /// implementation
-    void compute_residual_n(
-            Index::idx_t n,
-            const float* xs,
-            float* residuals,
-            const Index::idx_t* keys) const override;
-
-   protected:
-    /// Copy what we need from the CPU equivalent
-    void copyFrom(const faiss::Index* index);
-
-    /// Copy what we have to the CPU equivalent
-    void copyTo(faiss::Index* index) const;
-
-    /// Does addImpl_ require IDs? If so, and no IDs are provided, we will
-    /// generate them sequentially based on the order in which the IDs are added
-    virtual bool addImplRequiresIDs_() const = 0;
-
-    /// Overridden to actually perform the add
-    /// All data is guaranteed to be resident on our device
-    virtual void addImpl_(int n, const float* x, const Index::idx_t* ids) = 0;
-
-    /// Overridden to actually perform the search
-    /// All data is guaranteed to be resident on our device
-    virtual void searchImpl_(
-            int n,
-            const float* x,
-            int k,
-            float* distances,
-            Index::idx_t* labels) const = 0;
-
-   private:
-    /// Handles paged adds if the add set is too large, passes to
-    /// addImpl_ to actually perform the add for the current page
-    void addPaged_(int n, const float* x, const Index::idx_t* ids);
-
-    /// Calls addImpl_ for a single page of GPU-resident data
-    void addPage_(int n, const float* x, const Index::idx_t* ids);
-
-    /// Calls searchImpl_ for a single page of GPU-resident data
-    void searchNonPaged_(
-            int n,
-            const float* x,
-            int k,
-            float* outDistancesData,
-            Index::idx_t* outIndicesData) const;
-
-    /// Calls searchImpl_ for a single page of GPU-resident data,
-    /// handling paging of the data and copies from the CPU
-    void searchFromCpuPaged_(
-            int n,
-            const float* x,
-            int k,
-            float* outDistancesData,
-            Index::idx_t* outIndicesData) const;
-
-   protected:
-    /// Manages streams, cuBLAS handles and scratch memory for devices
-    std::shared_ptr<GpuResources> resources_;
-
-    /// Our configuration options
-    const GpuIndexConfig config_;
-
-    /// Size above which we page copies from the CPU to GPU
-    size_t minPagedSize_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndexBinaryFlat.cu b/faiss/gpu_cuda/GpuIndexBinaryFlat.cu
deleted file mode 100644
index a9d490e89e3040e366aaa9e38c953e073e8bd3b5..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndexBinaryFlat.cu
+++ /dev/null
@@ -1,299 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuIndexBinaryFlat.h>
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/impl/BinaryFlatIndex.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/CopyUtils.cuh>
-
-namespace faiss {
-namespace gpu {
-
-/// Default CPU search size for which we use paged copies
-constexpr size_t kMinPageSize = (size_t)256 * 1024 * 1024;
-
-GpuIndexBinaryFlat::GpuIndexBinaryFlat(
-        GpuResourcesProvider* provider,
-        const faiss::IndexBinaryFlat* index,
-        GpuIndexBinaryFlatConfig config)
-        : IndexBinary(index->d),
-          resources_(provider->getResources()),
-          binaryFlatConfig_(config) {
-    FAISS_THROW_IF_NOT_FMT(
-            this->d % 8 == 0,
-            "vector dimension (number of bits) "
-            "must be divisible by 8 (passed %d)",
-            this->d);
-
-    // Flat index doesn't need training
-    this->is_trained = true;
-
-    copyFrom(index);
-}
-
-GpuIndexBinaryFlat::GpuIndexBinaryFlat(
-        GpuResourcesProvider* provider,
-        int dims,
-        GpuIndexBinaryFlatConfig config)
-        : IndexBinary(dims),
-          resources_(provider->getResources()),
-          binaryFlatConfig_(std::move(config)) {
-    FAISS_THROW_IF_NOT_FMT(
-            this->d % 8 == 0,
-            "vector dimension (number of bits) "
-            "must be divisible by 8 (passed %d)",
-            this->d);
-
-    // Flat index doesn't need training
-    this->is_trained = true;
-
-    // Construct index
-    DeviceScope scope(binaryFlatConfig_.device);
-    data_.reset(new BinaryFlatIndex(
-            resources_.get(), this->d, binaryFlatConfig_.memorySpace));
-}
-
-GpuIndexBinaryFlat::~GpuIndexBinaryFlat() {}
-
-int GpuIndexBinaryFlat::getDevice() const {
-    return binaryFlatConfig_.device;
-}
-
-std::shared_ptr<GpuResources> GpuIndexBinaryFlat::getResources() {
-    return resources_;
-}
-
-void GpuIndexBinaryFlat::copyFrom(const faiss::IndexBinaryFlat* index) {
-    DeviceScope scope(binaryFlatConfig_.device);
-
-    this->d = index->d;
-
-    // GPU code has 32 bit indices
-    FAISS_THROW_IF_NOT_FMT(
-            index->ntotal <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports up to %zu indices; "
-            "attempting to copy CPU index with %zu parameters",
-            (size_t)std::numeric_limits<int>::max(),
-            (size_t)index->ntotal);
-    this->ntotal = index->ntotal;
-
-    // destroy old first before allocating new
-    data_.reset();
-    data_.reset(new BinaryFlatIndex(
-            resources_.get(), this->d, binaryFlatConfig_.memorySpace));
-
-    // The index could be empty
-    if (index->ntotal > 0) {
-        data_->add(
-                index->xb.data(),
-                index->ntotal,
-                resources_->getDefaultStream(binaryFlatConfig_.device));
-    }
-}
-
-void GpuIndexBinaryFlat::copyTo(faiss::IndexBinaryFlat* index) const {
-    DeviceScope scope(binaryFlatConfig_.device);
-
-    index->d = this->d;
-    index->ntotal = this->ntotal;
-
-    FAISS_ASSERT(data_);
-    FAISS_ASSERT(data_->getSize() == this->ntotal);
-    index->xb.resize(this->ntotal * (this->d / 8));
-
-    if (this->ntotal > 0) {
-        fromDevice(
-                data_->getVectorsRef(),
-                index->xb.data(),
-                resources_->getDefaultStream(binaryFlatConfig_.device));
-    }
-}
-
-void GpuIndexBinaryFlat::add(faiss::IndexBinary::idx_t n, const uint8_t* x) {
-    DeviceScope scope(binaryFlatConfig_.device);
-
-    // To avoid multiple re-allocations, ensure we have enough storage
-    // available
-    data_->reserve(n, resources_->getDefaultStream(binaryFlatConfig_.device));
-
-    // Due to GPU indexing in int32, we can't store more than this
-    // number of vectors on a GPU
-    FAISS_THROW_IF_NOT_FMT(
-            this->ntotal + n <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports up to %zu indices",
-            (size_t)std::numeric_limits<int>::max());
-
-    data_->add(
-            (const unsigned char*)x,
-            n,
-            resources_->getDefaultStream(binaryFlatConfig_.device));
-    this->ntotal += n;
-}
-
-void GpuIndexBinaryFlat::reset() {
-    DeviceScope scope(binaryFlatConfig_.device);
-
-    // Free the underlying memory
-    data_->reset();
-    this->ntotal = 0;
-}
-
-void GpuIndexBinaryFlat::search(
-        faiss::IndexBinary::idx_t n,
-        const uint8_t* x,
-        faiss::IndexBinary::idx_t k,
-        int32_t* distances,
-        faiss::IndexBinary::idx_t* labels) const {
-    if (n == 0) {
-        return;
-    }
-
-    FAISS_THROW_IF_NOT(k > 0);
-
-    // For now, only support <= max int results
-    FAISS_THROW_IF_NOT_FMT(
-            n <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports up to %zu indices",
-            (size_t)std::numeric_limits<int>::max());
-    FAISS_THROW_IF_NOT_FMT(
-            k <= (Index::idx_t)getMaxKSelection(),
-            "GPU only supports k <= %d (requested %d)",
-            getMaxKSelection(),
-            (int)k); // select limitation
-
-    DeviceScope scope(binaryFlatConfig_.device);
-    auto stream = resources_->getDefaultStream(binaryFlatConfig_.device);
-
-    // The input vectors may be too large for the GPU, but we still
-    // assume that the output distances and labels are not.
-    // Go ahead and make space for output distances and labels on the
-    // GPU.
-    // If we reach a point where all inputs are too big, we can add
-    // another level of tiling.
-    auto outDistances = toDeviceTemporary<int32_t, 2>(
-            resources_.get(),
-            binaryFlatConfig_.device,
-            distances,
-            stream,
-            {(int)n, (int)k});
-
-    // FlatIndex only supports an interface returning int indices
-    DeviceTensor<int, 2, true> outIntIndices(
-            resources_.get(),
-            makeTempAlloc(AllocType::Other, stream),
-            {(int)n, (int)k});
-
-    bool usePaged = false;
-
-    if (getDeviceForAddress(x) == -1) {
-        // It is possible that the user is querying for a vector set size
-        // `x` that won't fit on the GPU.
-        // In this case, we will have to handle paging of the data from CPU
-        // -> GPU.
-        // Currently, we don't handle the case where the output data won't
-        // fit on the GPU (e.g., n * k is too large for the GPU memory).
-        size_t dataSize = (size_t)n * (this->d / 8) * sizeof(uint8_t);
-
-        if (dataSize >= kMinPageSize) {
-            searchFromCpuPaged_(
-                    n, x, k, outDistances.data(), outIntIndices.data());
-            usePaged = true;
-        }
-    }
-
-    if (!usePaged) {
-        searchNonPaged_(n, x, k, outDistances.data(), outIntIndices.data());
-    }
-
-    // Convert and copy int indices out
-    auto outIndices = toDeviceTemporary<Index::idx_t, 2>(
-            resources_.get(),
-            binaryFlatConfig_.device,
-            labels,
-            stream,
-            {(int)n, (int)k});
-
-    // Convert int to idx_t
-    convertTensor<int, Index::idx_t, 2>(stream, outIntIndices, outIndices);
-
-    // Copy back if necessary
-    fromDevice<int32_t, 2>(outDistances, distances, stream);
-    fromDevice<Index::idx_t, 2>(outIndices, labels, stream);
-}
-
-void GpuIndexBinaryFlat::searchNonPaged_(
-        int n,
-        const uint8_t* x,
-        int k,
-        int32_t* outDistancesData,
-        int* outIndicesData) const {
-    Tensor<int32_t, 2, true> outDistances(outDistancesData, {n, k});
-    Tensor<int, 2, true> outIndices(outIndicesData, {n, k});
-
-    auto stream = resources_->getDefaultStream(binaryFlatConfig_.device);
-
-    // Make sure arguments are on the device we desire; use temporary
-    // memory allocations to move it if necessary
-    auto vecs = toDeviceTemporary<uint8_t, 2>(
-            resources_.get(),
-            binaryFlatConfig_.device,
-            const_cast<uint8_t*>(x),
-            stream,
-            {n, (int)(this->d / 8)});
-
-    data_->query(vecs, k, outDistances, outIndices);
-}
-
-void GpuIndexBinaryFlat::searchFromCpuPaged_(
-        int n,
-        const uint8_t* x,
-        int k,
-        int32_t* outDistancesData,
-        int* outIndicesData) const {
-    Tensor<int32_t, 2, true> outDistances(outDistancesData, {n, k});
-    Tensor<int, 2, true> outIndices(outIndicesData, {n, k});
-
-    auto vectorSize = sizeof(uint8_t) * (this->d / 8);
-
-    // Just page without overlapping copy with compute (as GpuIndexFlat does)
-    int batchSize = utils::nextHighestPowerOf2(
-            (int)((size_t)kMinPageSize / vectorSize));
-
-    for (int cur = 0; cur < n; cur += batchSize) {
-        int num = std::min(batchSize, n - cur);
-
-        auto outDistancesSlice = outDistances.narrowOutermost(cur, num);
-        auto outIndicesSlice = outIndices.narrowOutermost(cur, num);
-
-        searchNonPaged_(
-                num,
-                x + (size_t)cur * (this->d / 8),
-                k,
-                outDistancesSlice.data(),
-                outIndicesSlice.data());
-    }
-}
-
-void GpuIndexBinaryFlat::reconstruct(
-        faiss::IndexBinary::idx_t key,
-        uint8_t* out) const {
-    DeviceScope scope(binaryFlatConfig_.device);
-
-    FAISS_THROW_IF_NOT_MSG(key < this->ntotal, "index out of bounds");
-    auto stream = resources_->getDefaultStream(binaryFlatConfig_.device);
-
-    auto& vecs = data_->getVectorsRef();
-    auto vec = vecs[key];
-
-    fromDevice(vec.data(), out, vecs.getSize(1), stream);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndexBinaryFlat.h b/faiss/gpu_cuda/GpuIndexBinaryFlat.h
deleted file mode 100644
index f5c54982b6ba4afd0d3047b07d1860ebcd8d72dd..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndexBinaryFlat.h
+++ /dev/null
@@ -1,99 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/IndexBinaryFlat.h>
-#include <faiss/gpu/GpuIndex.h>
-#include <faiss/gpu/GpuResources.h>
-#include <memory>
-
-namespace faiss {
-namespace gpu {
-
-class BinaryFlatIndex;
-
-struct GpuIndexBinaryFlatConfig : public GpuIndexConfig {};
-
-/// A GPU version of IndexBinaryFlat for brute-force comparison of bit vectors
-/// via Hamming distance
-class GpuIndexBinaryFlat : public IndexBinary {
-   public:
-    /// Construct from a pre-existing faiss::IndexBinaryFlat instance, copying
-    /// data over to the given GPU
-    GpuIndexBinaryFlat(
-            GpuResourcesProvider* resources,
-            const faiss::IndexBinaryFlat* index,
-            GpuIndexBinaryFlatConfig config = GpuIndexBinaryFlatConfig());
-
-    /// Construct an empty instance that can be added to
-    GpuIndexBinaryFlat(
-            GpuResourcesProvider* resources,
-            int dims,
-            GpuIndexBinaryFlatConfig config = GpuIndexBinaryFlatConfig());
-
-    ~GpuIndexBinaryFlat() override;
-
-    /// Returns the device that this index is resident on
-    int getDevice() const;
-
-    /// Returns a reference to our GpuResources object that manages memory,
-    /// stream and handle resources on the GPU
-    std::shared_ptr<GpuResources> getResources();
-
-    /// Initialize ourselves from the given CPU index; will overwrite
-    /// all data in ourselves
-    void copyFrom(const faiss::IndexBinaryFlat* index);
-
-    /// Copy ourselves to the given CPU index; will overwrite all data
-    /// in the index instance
-    void copyTo(faiss::IndexBinaryFlat* index) const;
-
-    void add(faiss::IndexBinary::idx_t n, const uint8_t* x) override;
-
-    void reset() override;
-
-    void search(
-            faiss::IndexBinary::idx_t n,
-            const uint8_t* x,
-            faiss::IndexBinary::idx_t k,
-            int32_t* distances,
-            faiss::IndexBinary::idx_t* labels) const override;
-
-    void reconstruct(faiss::IndexBinary::idx_t key, uint8_t* recons)
-            const override;
-
-   protected:
-    /// Called from search when the input data is on the CPU;
-    /// potentially allows for pinned memory usage
-    void searchFromCpuPaged_(
-            int n,
-            const uint8_t* x,
-            int k,
-            int32_t* outDistancesData,
-            int* outIndicesData) const;
-
-    void searchNonPaged_(
-            int n,
-            const uint8_t* x,
-            int k,
-            int32_t* outDistancesData,
-            int* outIndicesData) const;
-
-   protected:
-    /// Manages streans, cuBLAS handles and scratch memory for devices
-    std::shared_ptr<GpuResources> resources_;
-
-    /// Configuration options
-    const GpuIndexBinaryFlatConfig binaryFlatConfig_;
-
-    /// Holds our GPU data containing the list of vectors
-    std::unique_ptr<BinaryFlatIndex> data_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndexFlat.cu b/faiss/gpu_cuda/GpuIndexFlat.cu
deleted file mode 100644
index 177e01badceb8432751e84e61ba1826b9e9a36c9..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndexFlat.cu
+++ /dev/null
@@ -1,426 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexFlat.h>
-#include <faiss/gpu/GpuIndexFlat.h>
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/gpu/impl/FlatIndex.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/CopyUtils.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-#include <limits>
-
-namespace faiss {
-namespace gpu {
-
-GpuIndexFlat::GpuIndexFlat(
-        GpuResourcesProvider* provider,
-        const faiss::IndexFlat* index,
-        GpuIndexFlatConfig config)
-        : GpuIndex(
-                  provider->getResources(),
-                  index->d,
-                  index->metric_type,
-                  index->metric_arg,
-                  config),
-          flatConfig_(config) {
-    // Flat index doesn't need training
-    this->is_trained = true;
-
-    copyFrom(index);
-}
-
-GpuIndexFlat::GpuIndexFlat(
-        std::shared_ptr<GpuResources> resources,
-        const faiss::IndexFlat* index,
-        GpuIndexFlatConfig config)
-        : GpuIndex(
-                  resources,
-                  index->d,
-                  index->metric_type,
-                  index->metric_arg,
-                  config),
-          flatConfig_(config) {
-    // Flat index doesn't need training
-    this->is_trained = true;
-
-    copyFrom(index);
-}
-
-GpuIndexFlat::GpuIndexFlat(
-        GpuResourcesProvider* provider,
-        int dims,
-        faiss::MetricType metric,
-        GpuIndexFlatConfig config)
-        : GpuIndex(provider->getResources(), dims, metric, 0, config),
-          flatConfig_(config) {
-    // Flat index doesn't need training
-    this->is_trained = true;
-
-    // Construct index
-    DeviceScope scope(config_.device);
-    data_.reset(new FlatIndex(
-            resources_.get(),
-            dims,
-            flatConfig_.useFloat16,
-            flatConfig_.storeTransposed,
-            config_.memorySpace));
-}
-
-GpuIndexFlat::GpuIndexFlat(
-        std::shared_ptr<GpuResources> resources,
-        int dims,
-        faiss::MetricType metric,
-        GpuIndexFlatConfig config)
-        : GpuIndex(resources, dims, metric, 0, config), flatConfig_(config) {
-    // Flat index doesn't need training
-    this->is_trained = true;
-
-    // Construct index
-    DeviceScope scope(config_.device);
-    data_.reset(new FlatIndex(
-            resources_.get(),
-            dims,
-            flatConfig_.useFloat16,
-            flatConfig_.storeTransposed,
-            config_.memorySpace));
-}
-
-GpuIndexFlat::~GpuIndexFlat() {}
-
-void GpuIndexFlat::copyFrom(const faiss::IndexFlat* index) {
-    DeviceScope scope(config_.device);
-
-    GpuIndex::copyFrom(index);
-
-    // GPU code has 32 bit indices
-    FAISS_THROW_IF_NOT_FMT(
-            index->ntotal <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports up to %zu indices; "
-            "attempting to copy CPU index with %zu parameters",
-            (size_t)std::numeric_limits<int>::max(),
-            (size_t)index->ntotal);
-
-    data_.reset();
-    data_.reset(new FlatIndex(
-            resources_.get(),
-            this->d,
-            flatConfig_.useFloat16,
-            flatConfig_.storeTransposed,
-            config_.memorySpace));
-
-    // The index could be empty
-    if (index->ntotal > 0) {
-        data_->add(
-                index->get_xb(),
-                index->ntotal,
-                resources_->getDefaultStream(config_.device));
-    }
-}
-
-void GpuIndexFlat::copyTo(faiss::IndexFlat* index) const {
-    DeviceScope scope(config_.device);
-
-    GpuIndex::copyTo(index);
-    index->code_size = sizeof(float) * this->d;
-
-    FAISS_ASSERT(data_);
-    FAISS_ASSERT(data_->getSize() == this->ntotal);
-    index->codes.resize(this->ntotal * index->code_size);
-
-    auto stream = resources_->getDefaultStream(config_.device);
-
-    if (this->ntotal > 0) {
-        if (flatConfig_.useFloat16) {
-            auto vecFloat32 = data_->getVectorsFloat32Copy(stream);
-            fromDevice(vecFloat32, index->get_xb(), stream);
-        } else {
-            fromDevice(data_->getVectorsFloat32Ref(), index->get_xb(), stream);
-        }
-    }
-}
-
-size_t GpuIndexFlat::getNumVecs() const {
-    return this->ntotal;
-}
-
-void GpuIndexFlat::reset() {
-    DeviceScope scope(config_.device);
-
-    // Free the underlying memory
-    data_->reset();
-    this->ntotal = 0;
-}
-
-void GpuIndexFlat::train(Index::idx_t n, const float* x) {
-    // nothing to do
-}
-
-void GpuIndexFlat::add(Index::idx_t n, const float* x) {
-    FAISS_THROW_IF_NOT_MSG(this->is_trained, "Index not trained");
-
-    // For now, only support <= max int results
-    FAISS_THROW_IF_NOT_FMT(
-            n <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports up to %d indices",
-            std::numeric_limits<int>::max());
-
-    if (n == 0) {
-        // nothing to add
-        return;
-    }
-
-    DeviceScope scope(config_.device);
-
-    // To avoid multiple re-allocations, ensure we have enough storage
-    // available
-    data_->reserve(n, resources_->getDefaultStream(config_.device));
-
-    // If we're not operating in float16 mode, we don't need the input
-    // data to be resident on our device; we can add directly.
-    if (!flatConfig_.useFloat16) {
-        addImpl_(n, x, nullptr);
-    } else {
-        // Otherwise, perform the paging
-        GpuIndex::add(n, x);
-    }
-}
-
-bool GpuIndexFlat::addImplRequiresIDs_() const {
-    return false;
-}
-
-void GpuIndexFlat::addImpl_(int n, const float* x, const Index::idx_t* ids) {
-    FAISS_ASSERT(data_);
-    FAISS_ASSERT(n > 0);
-
-    // We do not support add_with_ids
-    FAISS_THROW_IF_NOT_MSG(!ids, "add_with_ids not supported");
-
-    // Due to GPU indexing in int32, we can't store more than this
-    // number of vectors on a GPU
-    FAISS_THROW_IF_NOT_FMT(
-            this->ntotal + n <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports up to %zu indices",
-            (size_t)std::numeric_limits<int>::max());
-
-    data_->add(x, n, resources_->getDefaultStream(config_.device));
-    this->ntotal += n;
-}
-
-void GpuIndexFlat::searchImpl_(
-        int n,
-        const float* x,
-        int k,
-        float* distances,
-        Index::idx_t* labels) const {
-    auto stream = resources_->getDefaultStream(config_.device);
-
-    // Input and output data are already resident on the GPU
-    Tensor<float, 2, true> queries(const_cast<float*>(x), {n, (int)this->d});
-    Tensor<float, 2, true> outDistances(distances, {n, k});
-    Tensor<Index::idx_t, 2, true> outLabels(labels, {n, k});
-
-    // FlatIndex only supports int indices
-    DeviceTensor<int, 2, true> outIntLabels(
-            resources_.get(), makeTempAlloc(AllocType::Other, stream), {n, k});
-
-    data_->query(
-            queries,
-            k,
-            metric_type,
-            metric_arg,
-            outDistances,
-            outIntLabels,
-            true);
-
-    // Convert int to idx_t
-    convertTensor<int, Index::idx_t, 2>(stream, outIntLabels, outLabels);
-}
-
-void GpuIndexFlat::reconstruct(Index::idx_t key, float* out) const {
-    DeviceScope scope(config_.device);
-
-    FAISS_THROW_IF_NOT_MSG(key < this->ntotal, "index out of bounds");
-    auto stream = resources_->getDefaultStream(config_.device);
-
-    if (flatConfig_.useFloat16) {
-        // FIXME jhj: kernel for copy
-        auto vec = data_->getVectorsFloat32Copy(key, 1, stream);
-        fromDevice(vec.data(), out, this->d, stream);
-    } else {
-        auto vec = data_->getVectorsFloat32Ref()[key];
-        fromDevice(vec.data(), out, this->d, stream);
-    }
-}
-
-void GpuIndexFlat::reconstruct_n(Index::idx_t i0, Index::idx_t num, float* out)
-        const {
-    DeviceScope scope(config_.device);
-
-    FAISS_THROW_IF_NOT_MSG(i0 < this->ntotal, "index out of bounds");
-    FAISS_THROW_IF_NOT_MSG(i0 + num - 1 < this->ntotal, "num out of bounds");
-    auto stream = resources_->getDefaultStream(config_.device);
-
-    if (flatConfig_.useFloat16) {
-        // FIXME jhj: kernel for copy
-        auto vec = data_->getVectorsFloat32Copy(i0, num, stream);
-        fromDevice(vec.data(), out, num * this->d, stream);
-    } else {
-        auto vec = data_->getVectorsFloat32Ref()[i0];
-        fromDevice(vec.data(), out, this->d * num, stream);
-    }
-}
-
-void GpuIndexFlat::compute_residual(
-        const float* x,
-        float* residual,
-        Index::idx_t key) const {
-    compute_residual_n(1, x, residual, &key);
-}
-
-void GpuIndexFlat::compute_residual_n(
-        Index::idx_t n,
-        const float* xs,
-        float* residuals,
-        const Index::idx_t* keys) const {
-    FAISS_THROW_IF_NOT_FMT(
-            n <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports up to %zu indices",
-            (size_t)std::numeric_limits<int>::max());
-
-    auto stream = resources_->getDefaultStream(config_.device);
-
-    DeviceScope scope(config_.device);
-
-    auto vecsDevice = toDeviceTemporary<float, 2>(
-            resources_.get(),
-            config_.device,
-            const_cast<float*>(xs),
-            stream,
-            {(int)n, (int)this->d});
-    auto idsDevice = toDeviceTemporary<Index::idx_t, 1>(
-            resources_.get(),
-            config_.device,
-            const_cast<Index::idx_t*>(keys),
-            stream,
-            {(int)n});
-
-    auto residualDevice = toDeviceTemporary<float, 2>(
-            resources_.get(),
-            config_.device,
-            residuals,
-            stream,
-            {(int)n, (int)this->d});
-
-    // Convert idx_t to int
-    auto keysInt = convertTensorTemporary<Index::idx_t, int, 1>(
-            resources_.get(), stream, idsDevice);
-
-    FAISS_ASSERT(data_);
-    data_->computeResidual(vecsDevice, keysInt, residualDevice);
-
-    fromDevice<float, 2>(residualDevice, residuals, stream);
-}
-
-//
-// GpuIndexFlatL2
-//
-
-GpuIndexFlatL2::GpuIndexFlatL2(
-        GpuResourcesProvider* provider,
-        faiss::IndexFlatL2* index,
-        GpuIndexFlatConfig config)
-        : GpuIndexFlat(provider, index, config) {}
-
-GpuIndexFlatL2::GpuIndexFlatL2(
-        std::shared_ptr<GpuResources> resources,
-        faiss::IndexFlatL2* index,
-        GpuIndexFlatConfig config)
-        : GpuIndexFlat(resources, index, config) {}
-
-GpuIndexFlatL2::GpuIndexFlatL2(
-        GpuResourcesProvider* provider,
-        int dims,
-        GpuIndexFlatConfig config)
-        : GpuIndexFlat(provider, dims, faiss::METRIC_L2, config) {}
-
-GpuIndexFlatL2::GpuIndexFlatL2(
-        std::shared_ptr<GpuResources> resources,
-        int dims,
-        GpuIndexFlatConfig config)
-        : GpuIndexFlat(resources, dims, faiss::METRIC_L2, config) {}
-
-void GpuIndexFlatL2::copyFrom(faiss::IndexFlat* index) {
-    FAISS_THROW_IF_NOT_MSG(
-            index->metric_type == metric_type,
-            "Cannot copy a GpuIndexFlatL2 from an index of "
-            "different metric_type");
-
-    GpuIndexFlat::copyFrom(index);
-}
-
-void GpuIndexFlatL2::copyTo(faiss::IndexFlat* index) {
-    FAISS_THROW_IF_NOT_MSG(
-            index->metric_type == metric_type,
-            "Cannot copy a GpuIndexFlatL2 to an index of "
-            "different metric_type");
-
-    GpuIndexFlat::copyTo(index);
-}
-
-//
-// GpuIndexFlatIP
-//
-
-GpuIndexFlatIP::GpuIndexFlatIP(
-        GpuResourcesProvider* provider,
-        faiss::IndexFlatIP* index,
-        GpuIndexFlatConfig config)
-        : GpuIndexFlat(provider, index, config) {}
-
-GpuIndexFlatIP::GpuIndexFlatIP(
-        std::shared_ptr<GpuResources> resources,
-        faiss::IndexFlatIP* index,
-        GpuIndexFlatConfig config)
-        : GpuIndexFlat(resources, index, config) {}
-
-GpuIndexFlatIP::GpuIndexFlatIP(
-        GpuResourcesProvider* provider,
-        int dims,
-        GpuIndexFlatConfig config)
-        : GpuIndexFlat(provider, dims, faiss::METRIC_INNER_PRODUCT, config) {}
-
-GpuIndexFlatIP::GpuIndexFlatIP(
-        std::shared_ptr<GpuResources> resources,
-        int dims,
-        GpuIndexFlatConfig config)
-        : GpuIndexFlat(resources, dims, faiss::METRIC_INNER_PRODUCT, config) {}
-
-void GpuIndexFlatIP::copyFrom(faiss::IndexFlat* index) {
-    FAISS_THROW_IF_NOT_MSG(
-            index->metric_type == metric_type,
-            "Cannot copy a GpuIndexFlatIP from an index of "
-            "different metric_type");
-
-    GpuIndexFlat::copyFrom(index);
-}
-
-void GpuIndexFlatIP::copyTo(faiss::IndexFlat* index) {
-    // The passed in index must be IP
-    FAISS_THROW_IF_NOT_MSG(
-            index->metric_type == metric_type,
-            "Cannot copy a GpuIndexFlatIP to an index of "
-            "different metric_type");
-
-    GpuIndexFlat::copyTo(index);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndexFlat.h b/faiss/gpu_cuda/GpuIndexFlat.h
deleted file mode 100644
index 9fcc5ad3d441581b606d035f2397ca6a768d9648..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndexFlat.h
+++ /dev/null
@@ -1,216 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/GpuIndex.h>
-#include <memory>
-
-namespace faiss {
-
-struct IndexFlat;
-struct IndexFlatL2;
-struct IndexFlatIP;
-
-} // namespace faiss
-
-namespace faiss {
-namespace gpu {
-
-class FlatIndex;
-
-struct GpuIndexFlatConfig : public GpuIndexConfig {
-    inline GpuIndexFlatConfig() : useFloat16(false), storeTransposed(false) {}
-
-    /// Whether or not data is stored as float16
-    bool useFloat16;
-
-    /// Whether or not data is stored (transparently) in a transposed
-    /// layout, enabling use of the NN GEMM call, which is ~10% faster.
-    /// This will improve the speed of the flat index, but will
-    /// substantially slow down any add() calls made, as all data must
-    /// be transposed, and will increase storage requirements (we store
-    /// data in both transposed and non-transposed layouts).
-    bool storeTransposed;
-};
-
-/// Wrapper around the GPU implementation that looks like
-/// faiss::IndexFlat; copies over centroid data from a given
-/// faiss::IndexFlat
-class GpuIndexFlat : public GpuIndex {
-   public:
-    /// Construct from a pre-existing faiss::IndexFlat instance, copying
-    /// data over to the given GPU
-    GpuIndexFlat(
-            GpuResourcesProvider* provider,
-            const faiss::IndexFlat* index,
-            GpuIndexFlatConfig config = GpuIndexFlatConfig());
-
-    GpuIndexFlat(
-            std::shared_ptr<GpuResources> resources,
-            const faiss::IndexFlat* index,
-            GpuIndexFlatConfig config = GpuIndexFlatConfig());
-
-    /// Construct an empty instance that can be added to
-    GpuIndexFlat(
-            GpuResourcesProvider* provider,
-            int dims,
-            faiss::MetricType metric,
-            GpuIndexFlatConfig config = GpuIndexFlatConfig());
-
-    GpuIndexFlat(
-            std::shared_ptr<GpuResources> resources,
-            int dims,
-            faiss::MetricType metric,
-            GpuIndexFlatConfig config = GpuIndexFlatConfig());
-
-    ~GpuIndexFlat() override;
-
-    /// Initialize ourselves from the given CPU index; will overwrite
-    /// all data in ourselves
-    void copyFrom(const faiss::IndexFlat* index);
-
-    /// Copy ourselves to the given CPU index; will overwrite all data
-    /// in the index instance
-    void copyTo(faiss::IndexFlat* index) const;
-
-    /// Returns the number of vectors we contain
-    size_t getNumVecs() const;
-
-    /// Clears all vectors from this index
-    void reset() override;
-
-    /// This index is not trained, so this does nothing
-    void train(Index::idx_t n, const float* x) override;
-
-    /// Overrides to avoid excessive copies
-    void add(Index::idx_t, const float* x) override;
-
-    /// Reconstruction methods; prefer the batch reconstruct as it will
-    /// be more efficient
-    void reconstruct(Index::idx_t key, float* out) const override;
-
-    /// Batch reconstruction method
-    void reconstruct_n(Index::idx_t i0, Index::idx_t num, float* out)
-            const override;
-
-    /// Compute residual
-    void compute_residual(const float* x, float* residual, Index::idx_t key)
-            const override;
-
-    /// Compute residual (batch mode)
-    void compute_residual_n(
-            Index::idx_t n,
-            const float* xs,
-            float* residuals,
-            const Index::idx_t* keys) const override;
-
-    /// For internal access
-    inline FlatIndex* getGpuData() {
-        return data_.get();
-    }
-
-   protected:
-    /// Flat index does not require IDs as there is no storage available for
-    /// them
-    bool addImplRequiresIDs_() const override;
-
-    /// Called from GpuIndex for add
-    void addImpl_(int n, const float* x, const Index::idx_t* ids) override;
-
-    /// Called from GpuIndex for search
-    void searchImpl_(
-            int n,
-            const float* x,
-            int k,
-            float* distances,
-            Index::idx_t* labels) const override;
-
-   protected:
-    /// Our configuration options
-    const GpuIndexFlatConfig flatConfig_;
-
-    /// Holds our GPU data containing the list of vectors
-    std::unique_ptr<FlatIndex> data_;
-};
-
-/// Wrapper around the GPU implementation that looks like
-/// faiss::IndexFlatL2; copies over centroid data from a given
-/// faiss::IndexFlat
-class GpuIndexFlatL2 : public GpuIndexFlat {
-   public:
-    /// Construct from a pre-existing faiss::IndexFlatL2 instance, copying
-    /// data over to the given GPU
-    GpuIndexFlatL2(
-            GpuResourcesProvider* provider,
-            faiss::IndexFlatL2* index,
-            GpuIndexFlatConfig config = GpuIndexFlatConfig());
-
-    GpuIndexFlatL2(
-            std::shared_ptr<GpuResources> resources,
-            faiss::IndexFlatL2* index,
-            GpuIndexFlatConfig config = GpuIndexFlatConfig());
-
-    /// Construct an empty instance that can be added to
-    GpuIndexFlatL2(
-            GpuResourcesProvider* provider,
-            int dims,
-            GpuIndexFlatConfig config = GpuIndexFlatConfig());
-
-    GpuIndexFlatL2(
-            std::shared_ptr<GpuResources> resources,
-            int dims,
-            GpuIndexFlatConfig config = GpuIndexFlatConfig());
-
-    /// Initialize ourselves from the given CPU index; will overwrite
-    /// all data in ourselves
-    void copyFrom(faiss::IndexFlat* index);
-
-    /// Copy ourselves to the given CPU index; will overwrite all data
-    /// in the index instance
-    void copyTo(faiss::IndexFlat* index);
-};
-
-/// Wrapper around the GPU implementation that looks like
-/// faiss::IndexFlatIP; copies over centroid data from a given
-/// faiss::IndexFlat
-class GpuIndexFlatIP : public GpuIndexFlat {
-   public:
-    /// Construct from a pre-existing faiss::IndexFlatIP instance, copying
-    /// data over to the given GPU
-    GpuIndexFlatIP(
-            GpuResourcesProvider* provider,
-            faiss::IndexFlatIP* index,
-            GpuIndexFlatConfig config = GpuIndexFlatConfig());
-
-    GpuIndexFlatIP(
-            std::shared_ptr<GpuResources> resources,
-            faiss::IndexFlatIP* index,
-            GpuIndexFlatConfig config = GpuIndexFlatConfig());
-
-    /// Construct an empty instance that can be added to
-    GpuIndexFlatIP(
-            GpuResourcesProvider* provider,
-            int dims,
-            GpuIndexFlatConfig config = GpuIndexFlatConfig());
-
-    GpuIndexFlatIP(
-            std::shared_ptr<GpuResources> resources,
-            int dims,
-            GpuIndexFlatConfig config = GpuIndexFlatConfig());
-
-    /// Initialize ourselves from the given CPU index; will overwrite
-    /// all data in ourselves
-    void copyFrom(faiss::IndexFlat* index);
-
-    /// Copy ourselves to the given CPU index; will overwrite all data
-    /// in the index instance
-    void copyTo(faiss::IndexFlat* index);
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndexIVF.cu b/faiss/gpu_cuda/GpuIndexIVF.cu
deleted file mode 100644
index 2df20fe2e85b243dd04ac9a3cfd59708fb5c3d8e..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndexIVF.cu
+++ /dev/null
@@ -1,238 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexFlat.h>
-#include <faiss/IndexIVF.h>
-#include <faiss/gpu/GpuIndexFlat.h>
-#include <faiss/gpu/GpuIndexIVF.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/impl/FaissAssert.h>
-#include <faiss/gpu/utils/Float16.cuh>
-
-namespace faiss {
-namespace gpu {
-
-GpuIndexIVF::GpuIndexIVF(
-        GpuResourcesProvider* provider,
-        int dims,
-        faiss::MetricType metric,
-        float metricArg,
-        int nlistIn,
-        GpuIndexIVFConfig config)
-        : GpuIndex(provider->getResources(), dims, metric, metricArg, config),
-          nlist(nlistIn),
-          nprobe(1),
-          quantizer(nullptr),
-          ivfConfig_(config) {
-    init_();
-
-    // Only IP and L2 are supported for now
-    if (!(metric_type == faiss::METRIC_L2 ||
-          metric_type == faiss::METRIC_INNER_PRODUCT)) {
-        FAISS_THROW_FMT("unsupported metric type %d", (int)metric_type);
-    }
-}
-
-void GpuIndexIVF::init_() {
-    FAISS_THROW_IF_NOT_MSG(nlist > 0, "nlist must be > 0");
-
-    // Spherical by default if the metric is inner_product
-    if (metric_type == faiss::METRIC_INNER_PRODUCT) {
-        cp.spherical = true;
-    }
-
-    // here we set a low # iterations because this is typically used
-    // for large clusterings
-    cp.niter = 10;
-    cp.verbose = verbose;
-
-    if (!quantizer) {
-        // Construct an empty quantizer
-        GpuIndexFlatConfig config = ivfConfig_.flatConfig;
-        // FIXME: inherit our same device
-        config.device = config_.device;
-
-        if (metric_type == faiss::METRIC_L2) {
-            quantizer = new GpuIndexFlatL2(resources_, d, config);
-        } else if (metric_type == faiss::METRIC_INNER_PRODUCT) {
-            quantizer = new GpuIndexFlatIP(resources_, d, config);
-        } else {
-            // unknown metric type
-            FAISS_THROW_FMT("unsupported metric type %d", (int)metric_type);
-        }
-    }
-}
-
-GpuIndexIVF::~GpuIndexIVF() {
-    delete quantizer;
-}
-
-GpuIndexFlat* GpuIndexIVF::getQuantizer() {
-    return quantizer;
-}
-
-void GpuIndexIVF::copyFrom(const faiss::IndexIVF* index) {
-    DeviceScope scope(config_.device);
-
-    GpuIndex::copyFrom(index);
-
-    FAISS_ASSERT(index->nlist > 0);
-    FAISS_THROW_IF_NOT_FMT(
-            index->nlist <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports %zu inverted lists",
-            (size_t)std::numeric_limits<int>::max());
-    nlist = index->nlist;
-
-    FAISS_THROW_IF_NOT_FMT(
-            index->nprobe > 0 && index->nprobe <= getMaxKSelection(),
-            "GPU index only supports nprobe <= %zu; passed %zu",
-            (size_t)getMaxKSelection(),
-            index->nprobe);
-    nprobe = index->nprobe;
-
-    // The metric type may have changed as well, so we might have to
-    // change our quantizer
-    delete quantizer;
-    quantizer = nullptr;
-
-    // Construct an empty quantizer
-    GpuIndexFlatConfig config = ivfConfig_.flatConfig;
-    // FIXME: inherit our same device
-    config.device = config_.device;
-
-    if (index->metric_type == faiss::METRIC_L2) {
-        // FIXME: 2 different float16 options?
-        quantizer = new GpuIndexFlatL2(resources_, this->d, config);
-    } else if (index->metric_type == faiss::METRIC_INNER_PRODUCT) {
-        // FIXME: 2 different float16 options?
-        quantizer = new GpuIndexFlatIP(resources_, this->d, config);
-    } else {
-        // unknown metric type
-        FAISS_ASSERT(false);
-    }
-
-    if (!index->is_trained) {
-        // copied in GpuIndex::copyFrom
-        FAISS_ASSERT(!is_trained && ntotal == 0);
-        return;
-    }
-
-    // copied in GpuIndex::copyFrom
-    // ntotal can exceed max int, but the number of vectors per inverted
-    // list cannot exceed this. We check this in the subclasses.
-    FAISS_ASSERT(is_trained && (ntotal == index->ntotal));
-
-    // Since we're trained, the quantizer must have data
-    FAISS_ASSERT(index->quantizer->ntotal > 0);
-
-    // Right now, we can only handle IndexFlat or derived classes
-    auto qFlat = dynamic_cast<faiss::IndexFlat*>(index->quantizer);
-    FAISS_THROW_IF_NOT_MSG(
-            qFlat,
-            "Only IndexFlat is supported for the coarse quantizer "
-            "for copying from an IndexIVF into a GpuIndexIVF");
-
-    quantizer->copyFrom(qFlat);
-}
-
-void GpuIndexIVF::copyTo(faiss::IndexIVF* index) const {
-    DeviceScope scope(config_.device);
-
-    //
-    // Index information
-    //
-    GpuIndex::copyTo(index);
-
-    //
-    // IndexIVF information
-    //
-    index->nlist = nlist;
-    index->nprobe = nprobe;
-
-    // Construct and copy the appropriate quantizer
-    faiss::IndexFlat* q = nullptr;
-
-    if (this->metric_type == faiss::METRIC_L2) {
-        q = new faiss::IndexFlatL2(this->d);
-
-    } else if (this->metric_type == faiss::METRIC_INNER_PRODUCT) {
-        q = new faiss::IndexFlatIP(this->d);
-
-    } else {
-        // we should have one of the above metrics
-        FAISS_ASSERT(false);
-    }
-
-    FAISS_ASSERT(quantizer);
-    quantizer->copyTo(q);
-
-    if (index->own_fields) {
-        delete index->quantizer;
-    }
-
-    index->quantizer = q;
-    index->quantizer_trains_alone = 0;
-    index->own_fields = true;
-    index->cp = this->cp;
-    index->make_direct_map(false);
-}
-
-int GpuIndexIVF::getNumLists() const {
-    return nlist;
-}
-
-void GpuIndexIVF::setNumProbes(int nprobe) {
-    FAISS_THROW_IF_NOT_FMT(
-            nprobe > 0 && nprobe <= getMaxKSelection(),
-            "GPU index only supports nprobe <= %d; passed %d",
-            getMaxKSelection(),
-            nprobe);
-    this->nprobe = nprobe;
-}
-
-int GpuIndexIVF::getNumProbes() const {
-    return nprobe;
-}
-
-bool GpuIndexIVF::addImplRequiresIDs_() const {
-    // All IVF indices have storage for IDs
-    return true;
-}
-
-void GpuIndexIVF::trainQuantizer_(Index::idx_t n, const float* x) {
-    if (n == 0) {
-        // nothing to do
-        return;
-    }
-
-    if (quantizer->is_trained && (quantizer->ntotal == nlist)) {
-        if (this->verbose) {
-            printf("IVF quantizer does not need training.\n");
-        }
-
-        return;
-    }
-
-    if (this->verbose) {
-        printf("Training IVF quantizer on %ld vectors in %dD\n", n, d);
-    }
-
-    DeviceScope scope(config_.device);
-
-    // leverage the CPU-side k-means code, which works for the GPU
-    // flat index as well
-    quantizer->reset();
-    Clustering clus(this->d, nlist, this->cp);
-    clus.verbose = verbose;
-    clus.train(n, x, *quantizer);
-    quantizer->is_trained = true;
-
-    FAISS_ASSERT(quantizer->ntotal == nlist);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndexIVF.h b/faiss/gpu_cuda/GpuIndexIVF.h
deleted file mode 100644
index 834cb061ce245091fca5e7e4f23bba7b7dfcb1c7..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndexIVF.h
+++ /dev/null
@@ -1,109 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/Clustering.h>
-#include <faiss/gpu/GpuIndex.h>
-#include <faiss/gpu/GpuIndexFlat.h>
-#include <faiss/gpu/GpuIndicesOptions.h>
-
-namespace faiss {
-struct IndexIVF;
-}
-
-namespace faiss {
-namespace gpu {
-
-class GpuIndexFlat;
-
-struct GpuIndexIVFConfig : public GpuIndexConfig {
-    inline GpuIndexIVFConfig() : indicesOptions(INDICES_64_BIT) {}
-
-    /// Index storage options for the GPU
-    IndicesOptions indicesOptions;
-
-    /// Configuration for the coarse quantizer object
-    GpuIndexFlatConfig flatConfig;
-};
-
-class GpuIndexIVF : public GpuIndex {
-   public:
-    GpuIndexIVF(
-            GpuResourcesProvider* provider,
-            int dims,
-            faiss::MetricType metric,
-            float metricArg,
-            int nlist,
-            GpuIndexIVFConfig config = GpuIndexIVFConfig());
-
-    ~GpuIndexIVF() override;
-
-   private:
-    /// Shared initialization functions
-    void init_();
-
-   public:
-    /// Copy what we need from the CPU equivalent
-    void copyFrom(const faiss::IndexIVF* index);
-
-    /// Copy what we have to the CPU equivalent
-    void copyTo(faiss::IndexIVF* index) const;
-
-    /// Returns the number of inverted lists we're managing
-    int getNumLists() const;
-
-    /// Returns the number of vectors present in a particular inverted list
-    virtual int getListLength(int listId) const = 0;
-
-    /// Return the encoded vector data contained in a particular inverted list,
-    /// for debugging purposes.
-    /// If gpuFormat is true, the data is returned as it is encoded in the
-    /// GPU-side representation.
-    /// Otherwise, it is converted to the CPU format.
-    /// compliant format, while the native GPU format may differ.
-    virtual std::vector<uint8_t> getListVectorData(
-            int listId,
-            bool gpuFormat = false) const = 0;
-
-    /// Return the vector indices contained in a particular inverted list, for
-    /// debugging purposes.
-    virtual std::vector<Index::idx_t> getListIndices(int listId) const = 0;
-
-    /// Return the quantizer we're using
-    GpuIndexFlat* getQuantizer();
-
-    /// Sets the number of list probes per query
-    void setNumProbes(int nprobe);
-
-    /// Returns our current number of list probes per query
-    int getNumProbes() const;
-
-   protected:
-    bool addImplRequiresIDs_() const override;
-    void trainQuantizer_(Index::idx_t n, const float* x);
-
-   public:
-    /// Exposing this like the CPU version for manipulation
-    ClusteringParameters cp;
-
-    /// Exposing this like the CPU version for query
-    int nlist;
-
-    /// Exposing this like the CPU version for manipulation
-    int nprobe;
-
-    /// Exposeing this like the CPU version for query
-    GpuIndexFlat* quantizer;
-
-   protected:
-    /// Our configuration options
-    const GpuIndexIVFConfig ivfConfig_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndexIVFFlat.cu b/faiss/gpu_cuda/GpuIndexIVFFlat.cu
deleted file mode 100644
index 3b32b83f84584482fc5546db2cf9d2950e4ff320..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndexIVFFlat.cu
+++ /dev/null
@@ -1,251 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexFlat.h>
-#include <faiss/IndexIVFFlat.h>
-#include <faiss/gpu/GpuIndexFlat.h>
-#include <faiss/gpu/GpuIndexIVFFlat.h>
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/impl/IVFFlat.cuh>
-#include <faiss/gpu/utils/CopyUtils.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-
-#include <limits>
-
-namespace faiss {
-namespace gpu {
-
-GpuIndexIVFFlat::GpuIndexIVFFlat(
-        GpuResourcesProvider* provider,
-        const faiss::IndexIVFFlat* index,
-        GpuIndexIVFFlatConfig config)
-        : GpuIndexIVF(
-                  provider,
-                  index->d,
-                  index->metric_type,
-                  index->metric_arg,
-                  index->nlist,
-                  config),
-          ivfFlatConfig_(config),
-          reserveMemoryVecs_(0) {
-    copyFrom(index);
-}
-
-GpuIndexIVFFlat::GpuIndexIVFFlat(
-        GpuResourcesProvider* provider,
-        int dims,
-        int nlist,
-        faiss::MetricType metric,
-        GpuIndexIVFFlatConfig config)
-        : GpuIndexIVF(provider, dims, metric, 0, nlist, config),
-          ivfFlatConfig_(config),
-          reserveMemoryVecs_(0) {
-    // faiss::Index params
-    this->is_trained = false;
-
-    // We haven't trained ourselves, so don't construct the IVFFlat
-    // index yet
-}
-
-GpuIndexIVFFlat::~GpuIndexIVFFlat() {}
-
-void GpuIndexIVFFlat::reserveMemory(size_t numVecs) {
-    reserveMemoryVecs_ = numVecs;
-    if (index_) {
-        DeviceScope scope(config_.device);
-        index_->reserveMemory(numVecs);
-    }
-}
-
-void GpuIndexIVFFlat::copyFrom(const faiss::IndexIVFFlat* index) {
-    DeviceScope scope(config_.device);
-
-    GpuIndexIVF::copyFrom(index);
-
-    // Clear out our old data
-    index_.reset();
-
-    // The other index might not be trained
-    if (!index->is_trained) {
-        FAISS_ASSERT(!is_trained);
-        return;
-    }
-
-    // Otherwise, we can populate ourselves from the other index
-    FAISS_ASSERT(is_trained);
-
-    // Copy our lists as well
-    index_.reset(new IVFFlat(
-            resources_.get(),
-            quantizer->getGpuData(),
-            index->metric_type,
-            index->metric_arg,
-            false,   // no residual
-            nullptr, // no scalar quantizer
-            ivfFlatConfig_.interleavedLayout,
-            ivfFlatConfig_.indicesOptions,
-            config_.memorySpace));
-
-    // Copy all of the IVF data
-    index_->copyInvertedListsFrom(index->invlists);
-}
-
-void GpuIndexIVFFlat::copyTo(faiss::IndexIVFFlat* index) const {
-    DeviceScope scope(config_.device);
-
-    // We must have the indices in order to copy to ourselves
-    FAISS_THROW_IF_NOT_MSG(
-            ivfFlatConfig_.indicesOptions != INDICES_IVF,
-            "Cannot copy to CPU as GPU index doesn't retain "
-            "indices (INDICES_IVF)");
-
-    GpuIndexIVF::copyTo(index);
-    index->code_size = this->d * sizeof(float);
-
-    auto ivf = new ArrayInvertedLists(nlist, index->code_size);
-    index->replace_invlists(ivf, true);
-
-    if (index_) {
-        // Copy IVF lists
-        index_->copyInvertedListsTo(ivf);
-    }
-}
-
-size_t GpuIndexIVFFlat::reclaimMemory() {
-    if (index_) {
-        DeviceScope scope(config_.device);
-
-        return index_->reclaimMemory();
-    }
-
-    return 0;
-}
-
-void GpuIndexIVFFlat::reset() {
-    if (index_) {
-        DeviceScope scope(config_.device);
-
-        index_->reset();
-        this->ntotal = 0;
-    } else {
-        FAISS_ASSERT(this->ntotal == 0);
-    }
-}
-
-void GpuIndexIVFFlat::train(Index::idx_t n, const float* x) {
-    // For now, only support <= max int results
-    FAISS_THROW_IF_NOT_FMT(
-            n <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports up to %d indices",
-            std::numeric_limits<int>::max());
-
-    DeviceScope scope(config_.device);
-
-    if (this->is_trained) {
-        FAISS_ASSERT(quantizer->is_trained);
-        FAISS_ASSERT(quantizer->ntotal == nlist);
-        FAISS_ASSERT(index_);
-        return;
-    }
-
-    FAISS_ASSERT(!index_);
-
-    // FIXME: GPUize more of this
-    // First, make sure that the data is resident on the CPU, if it is not on
-    // the CPU, as we depend upon parts of the CPU code
-    auto hostData = toHost<float, 2>(
-            (float*)x,
-            resources_->getDefaultStream(config_.device),
-            {(int)n, (int)this->d});
-
-    trainQuantizer_(n, hostData.data());
-
-    // The quantizer is now trained; construct the IVF index
-    index_.reset(new IVFFlat(
-            resources_.get(),
-            quantizer->getGpuData(),
-            this->metric_type,
-            this->metric_arg,
-            false,   // no residual
-            nullptr, // no scalar quantizer
-            ivfFlatConfig_.interleavedLayout,
-            ivfFlatConfig_.indicesOptions,
-            config_.memorySpace));
-
-    if (reserveMemoryVecs_) {
-        index_->reserveMemory(reserveMemoryVecs_);
-    }
-
-    this->is_trained = true;
-}
-
-int GpuIndexIVFFlat::getListLength(int listId) const {
-    FAISS_ASSERT(index_);
-    DeviceScope scope(config_.device);
-
-    return index_->getListLength(listId);
-}
-
-std::vector<uint8_t> GpuIndexIVFFlat::getListVectorData(
-        int listId,
-        bool gpuFormat) const {
-    FAISS_ASSERT(index_);
-    DeviceScope scope(config_.device);
-
-    return index_->getListVectorData(listId, gpuFormat);
-}
-
-std::vector<Index::idx_t> GpuIndexIVFFlat::getListIndices(int listId) const {
-    FAISS_ASSERT(index_);
-    DeviceScope scope(config_.device);
-
-    return index_->getListIndices(listId);
-}
-
-void GpuIndexIVFFlat::addImpl_(
-        int n,
-        const float* x,
-        const Index::idx_t* xids) {
-    // Device is already set in GpuIndex::add
-    FAISS_ASSERT(index_);
-    FAISS_ASSERT(n > 0);
-
-    // Data is already resident on the GPU
-    Tensor<float, 2, true> data(const_cast<float*>(x), {n, (int)this->d});
-    Tensor<Index::idx_t, 1, true> labels(const_cast<Index::idx_t*>(xids), {n});
-
-    // Not all vectors may be able to be added (some may contain NaNs etc)
-    index_->addVectors(data, labels);
-
-    // but keep the ntotal based on the total number of vectors that we
-    // attempted to add
-    ntotal += n;
-}
-
-void GpuIndexIVFFlat::searchImpl_(
-        int n,
-        const float* x,
-        int k,
-        float* distances,
-        Index::idx_t* labels) const {
-    // Device is already set in GpuIndex::search
-    FAISS_ASSERT(index_);
-    FAISS_ASSERT(n > 0);
-    FAISS_THROW_IF_NOT(nprobe > 0 && nprobe <= nlist);
-
-    // Data is already resident on the GPU
-    Tensor<float, 2, true> queries(const_cast<float*>(x), {n, (int)this->d});
-    Tensor<float, 2, true> outDistances(distances, {n, k});
-    Tensor<Index::idx_t, 2, true> outLabels(
-            const_cast<Index::idx_t*>(labels), {n, k});
-
-    index_->query(queries, nprobe, k, outDistances, outLabels);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndexIVFFlat.h b/faiss/gpu_cuda/GpuIndexIVFFlat.h
deleted file mode 100644
index 163198216460d2d7f4cc3bd865211bf1cf263967..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndexIVFFlat.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/GpuIndexIVF.h>
-#include <memory>
-
-namespace faiss {
-struct IndexIVFFlat;
-}
-
-namespace faiss {
-namespace gpu {
-
-class IVFFlat;
-class GpuIndexFlat;
-
-struct GpuIndexIVFFlatConfig : public GpuIndexIVFConfig {
-    inline GpuIndexIVFFlatConfig() : interleavedLayout(true) {}
-
-    /// Use the alternative memory layout for the IVF lists
-    /// (currently the default)
-    bool interleavedLayout;
-};
-
-/// Wrapper around the GPU implementation that looks like
-/// faiss::IndexIVFFlat
-class GpuIndexIVFFlat : public GpuIndexIVF {
-   public:
-    /// Construct from a pre-existing faiss::IndexIVFFlat instance, copying
-    /// data over to the given GPU, if the input index is trained.
-    GpuIndexIVFFlat(
-            GpuResourcesProvider* provider,
-            const faiss::IndexIVFFlat* index,
-            GpuIndexIVFFlatConfig config = GpuIndexIVFFlatConfig());
-
-    /// Constructs a new instance with an empty flat quantizer; the user
-    /// provides the number of lists desired.
-    GpuIndexIVFFlat(
-            GpuResourcesProvider* provider,
-            int dims,
-            int nlist,
-            faiss::MetricType metric,
-            GpuIndexIVFFlatConfig config = GpuIndexIVFFlatConfig());
-
-    ~GpuIndexIVFFlat() override;
-
-    /// Reserve GPU memory in our inverted lists for this number of vectors
-    void reserveMemory(size_t numVecs);
-
-    /// Initialize ourselves from the given CPU index; will overwrite
-    /// all data in ourselves
-    void copyFrom(const faiss::IndexIVFFlat* index);
-
-    /// Copy ourselves to the given CPU index; will overwrite all data
-    /// in the index instance
-    void copyTo(faiss::IndexIVFFlat* index) const;
-
-    /// After adding vectors, one can call this to reclaim device memory
-    /// to exactly the amount needed. Returns space reclaimed in bytes
-    size_t reclaimMemory();
-
-    /// Clears out all inverted lists, but retains the coarse centroid
-    /// information
-    void reset() override;
-
-    /// Trains the coarse quantizer based on the given vector data
-    void train(Index::idx_t n, const float* x) override;
-
-    /// Returns the number of vectors present in a particular inverted list
-    int getListLength(int listId) const override;
-
-    /// Return the encoded vector data contained in a particular inverted list,
-    /// for debugging purposes.
-    /// If gpuFormat is true, the data is returned as it is encoded in the
-    /// GPU-side representation.
-    /// Otherwise, it is converted to the CPU format.
-    /// compliant format, while the native GPU format may differ.
-    std::vector<uint8_t> getListVectorData(int listId, bool gpuFormat = false)
-            const override;
-
-    /// Return the vector indices contained in a particular inverted list, for
-    /// debugging purposes.
-    std::vector<Index::idx_t> getListIndices(int listId) const override;
-
-   protected:
-    /// Called from GpuIndex for add/add_with_ids
-    void addImpl_(int n, const float* x, const Index::idx_t* ids) override;
-
-    /// Called from GpuIndex for search
-    void searchImpl_(
-            int n,
-            const float* x,
-            int k,
-            float* distances,
-            Index::idx_t* labels) const override;
-
-   protected:
-    /// Our configuration options
-    const GpuIndexIVFFlatConfig ivfFlatConfig_;
-
-    /// Desired inverted list memory reservation
-    size_t reserveMemoryVecs_;
-
-    /// Instance that we own; contains the inverted list
-    std::unique_ptr<IVFFlat> index_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndexIVFPQ.cu b/faiss/gpu_cuda/GpuIndexIVFPQ.cu
deleted file mode 100644
index baa9c418bb3aae969d3dee22e90e00e47e1a4eec..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndexIVFPQ.cu
+++ /dev/null
@@ -1,457 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexFlat.h>
-#include <faiss/IndexIVFPQ.h>
-#include <faiss/gpu/GpuIndexFlat.h>
-#include <faiss/gpu/GpuIndexIVFPQ.h>
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/utils/utils.h>
-#include <faiss/gpu/impl/IVFPQ.cuh>
-#include <faiss/gpu/utils/CopyUtils.cuh>
-
-#include <limits>
-
-namespace faiss {
-namespace gpu {
-
-GpuIndexIVFPQ::GpuIndexIVFPQ(
-        GpuResourcesProvider* provider,
-        const faiss::IndexIVFPQ* index,
-        GpuIndexIVFPQConfig config)
-        : GpuIndexIVF(
-                  provider,
-                  index->d,
-                  index->metric_type,
-                  index->metric_arg,
-                  index->nlist,
-                  config),
-          pq(index->pq),
-          ivfpqConfig_(config),
-          usePrecomputedTables_(config.usePrecomputedTables),
-          subQuantizers_(0),
-          bitsPerCode_(0),
-          reserveMemoryVecs_(0) {
-    copyFrom(index);
-}
-
-GpuIndexIVFPQ::GpuIndexIVFPQ(
-        GpuResourcesProvider* provider,
-        int dims,
-        int nlist,
-        int subQuantizers,
-        int bitsPerCode,
-        faiss::MetricType metric,
-        GpuIndexIVFPQConfig config)
-        : GpuIndexIVF(provider, dims, metric, 0, nlist, config),
-          pq(dims, subQuantizers, bitsPerCode),
-          ivfpqConfig_(config),
-          usePrecomputedTables_(config.usePrecomputedTables),
-          subQuantizers_(subQuantizers),
-          bitsPerCode_(bitsPerCode),
-          reserveMemoryVecs_(0) {
-    verifySettings_();
-
-    // We haven't trained ourselves, so don't construct the PQ index yet
-    this->is_trained = false;
-}
-
-GpuIndexIVFPQ::~GpuIndexIVFPQ() {}
-
-void GpuIndexIVFPQ::copyFrom(const faiss::IndexIVFPQ* index) {
-    DeviceScope scope(config_.device);
-
-    GpuIndexIVF::copyFrom(index);
-
-    // Clear out our old data
-    index_.reset();
-
-    pq = index->pq;
-    subQuantizers_ = index->pq.M;
-    bitsPerCode_ = index->pq.nbits;
-
-    // We only support this
-    FAISS_THROW_IF_NOT_MSG(
-            ivfpqConfig_.interleavedLayout || index->pq.nbits == 8,
-            "GPU: only pq.nbits == 8 is supported");
-    FAISS_THROW_IF_NOT_MSG(
-            index->by_residual, "GPU: only by_residual = true is supported");
-    FAISS_THROW_IF_NOT_MSG(
-            index->polysemous_ht == 0, "GPU: polysemous codes not supported");
-
-    verifySettings_();
-
-    // The other index might not be trained
-    if (!index->is_trained) {
-        // copied in GpuIndex::copyFrom
-        FAISS_ASSERT(!is_trained);
-        return;
-    }
-
-    // Copy our lists as well
-    // The product quantizer must have data in it
-    FAISS_ASSERT(index->pq.centroids.size() > 0);
-    index_.reset(new IVFPQ(
-            resources_.get(),
-            index->metric_type,
-            index->metric_arg,
-            quantizer->getGpuData(),
-            subQuantizers_,
-            bitsPerCode_,
-            ivfpqConfig_.useFloat16LookupTables,
-            ivfpqConfig_.useMMCodeDistance,
-            ivfpqConfig_.interleavedLayout,
-            (float*)index->pq.centroids.data(),
-            ivfpqConfig_.indicesOptions,
-            config_.memorySpace));
-    // Doesn't make sense to reserve memory here
-    index_->setPrecomputedCodes(usePrecomputedTables_);
-
-    // Copy all of the IVF data
-    index_->copyInvertedListsFrom(index->invlists);
-}
-
-void GpuIndexIVFPQ::copyTo(faiss::IndexIVFPQ* index) const {
-    DeviceScope scope(config_.device);
-
-    // We must have the indices in order to copy to ourselves
-    FAISS_THROW_IF_NOT_MSG(
-            ivfpqConfig_.indicesOptions != INDICES_IVF,
-            "Cannot copy to CPU as GPU index doesn't retain "
-            "indices (INDICES_IVF)");
-
-    GpuIndexIVF::copyTo(index);
-
-    //
-    // IndexIVFPQ information
-    //
-    index->by_residual = true;
-    index->use_precomputed_table = 0;
-    index->code_size = subQuantizers_;
-    index->pq = faiss::ProductQuantizer(this->d, subQuantizers_, bitsPerCode_);
-
-    index->do_polysemous_training = false;
-    index->polysemous_training = nullptr;
-
-    index->scan_table_threshold = 0;
-    index->max_codes = 0;
-    index->polysemous_ht = 0;
-    index->precomputed_table.clear();
-
-    auto ivf = new ArrayInvertedLists(nlist, index->code_size);
-    index->replace_invlists(ivf, true);
-
-    if (index_) {
-        // Copy IVF lists
-        index_->copyInvertedListsTo(ivf);
-
-        // Copy PQ centroids
-        auto devPQCentroids = index_->getPQCentroids();
-        index->pq.centroids.resize(devPQCentroids.numElements());
-
-        fromDevice<float, 3>(
-                devPQCentroids,
-                index->pq.centroids.data(),
-                resources_->getDefaultStream(config_.device));
-
-        if (usePrecomputedTables_) {
-            index->precompute_table();
-        }
-    }
-}
-
-void GpuIndexIVFPQ::reserveMemory(size_t numVecs) {
-    reserveMemoryVecs_ = numVecs;
-    if (index_) {
-        DeviceScope scope(config_.device);
-        index_->reserveMemory(numVecs);
-    }
-}
-
-void GpuIndexIVFPQ::setPrecomputedCodes(bool enable) {
-    usePrecomputedTables_ = enable;
-    if (index_) {
-        DeviceScope scope(config_.device);
-        index_->setPrecomputedCodes(enable);
-    }
-
-    verifySettings_();
-}
-
-bool GpuIndexIVFPQ::getPrecomputedCodes() const {
-    return usePrecomputedTables_;
-}
-
-int GpuIndexIVFPQ::getNumSubQuantizers() const {
-    return subQuantizers_;
-}
-
-int GpuIndexIVFPQ::getBitsPerCode() const {
-    return bitsPerCode_;
-}
-
-int GpuIndexIVFPQ::getCentroidsPerSubQuantizer() const {
-    return utils::pow2(bitsPerCode_);
-}
-
-size_t GpuIndexIVFPQ::reclaimMemory() {
-    if (index_) {
-        DeviceScope scope(config_.device);
-        return index_->reclaimMemory();
-    }
-
-    return 0;
-}
-
-void GpuIndexIVFPQ::reset() {
-    if (index_) {
-        DeviceScope scope(config_.device);
-
-        index_->reset();
-        this->ntotal = 0;
-    } else {
-        FAISS_ASSERT(this->ntotal == 0);
-    }
-}
-
-void GpuIndexIVFPQ::trainResidualQuantizer_(Index::idx_t n, const float* x) {
-    // Code largely copied from faiss::IndexIVFPQ
-    auto x_in = x;
-
-    x = fvecs_maybe_subsample(
-            d,
-            (size_t*)&n,
-            pq.cp.max_points_per_centroid * pq.ksub,
-            x,
-            verbose,
-            pq.cp.seed);
-
-    ScopeDeleter<float> del_x(x_in == x ? nullptr : x);
-
-    if (this->verbose) {
-        printf("computing residuals\n");
-    }
-
-    std::vector<Index::idx_t> assign(n);
-    quantizer->assign(n, x, assign.data());
-
-    std::vector<float> residuals(n * d);
-
-    // FIXME jhj convert to _n version
-    for (idx_t i = 0; i < n; i++) {
-        quantizer->compute_residual(x + i * d, &residuals[i * d], assign[i]);
-    }
-
-    if (this->verbose) {
-        printf("training %d x %d product quantizer on %ld vectors in %dD\n",
-               subQuantizers_,
-               getCentroidsPerSubQuantizer(),
-               n,
-               this->d);
-    }
-
-    // For PQ training purposes, accelerate it by using a GPU clustering index
-    // if a clustering index has not already been assigned
-    if (!pq.assign_index) {
-        try {
-            GpuIndexFlatConfig config;
-            config.device = ivfpqConfig_.device;
-            GpuIndexFlatL2 pqIndex(resources_, pq.dsub, config);
-
-            pq.assign_index = &pqIndex;
-            pq.train(n, residuals.data());
-        } catch (...) {
-            pq.assign_index = nullptr;
-            throw;
-        }
-
-        pq.assign_index = nullptr;
-    } else {
-        // use the currently assigned clustering index
-        pq.train(n, residuals.data());
-    }
-
-    index_.reset(new IVFPQ(
-            resources_.get(),
-            metric_type,
-            metric_arg,
-            quantizer->getGpuData(),
-            subQuantizers_,
-            bitsPerCode_,
-            ivfpqConfig_.useFloat16LookupTables,
-            ivfpqConfig_.useMMCodeDistance,
-            ivfpqConfig_.interleavedLayout,
-            pq.centroids.data(),
-            ivfpqConfig_.indicesOptions,
-            config_.memorySpace));
-    if (reserveMemoryVecs_) {
-        index_->reserveMemory(reserveMemoryVecs_);
-    }
-
-    index_->setPrecomputedCodes(usePrecomputedTables_);
-}
-
-void GpuIndexIVFPQ::train(Index::idx_t n, const float* x) {
-    // For now, only support <= max int results
-    FAISS_THROW_IF_NOT_FMT(
-            n <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports up to %d indices",
-            std::numeric_limits<int>::max());
-
-    DeviceScope scope(config_.device);
-
-    if (this->is_trained) {
-        FAISS_ASSERT(quantizer->is_trained);
-        FAISS_ASSERT(quantizer->ntotal == nlist);
-        FAISS_ASSERT(index_);
-        return;
-    }
-
-    FAISS_ASSERT(!index_);
-
-    // FIXME: GPUize more of this
-    // First, make sure that the data is resident on the CPU, if it is not on
-    // the CPU, as we depend upon parts of the CPU code
-    auto hostData = toHost<float, 2>(
-            (float*)x,
-            resources_->getDefaultStream(config_.device),
-            {(int)n, (int)this->d});
-
-    trainQuantizer_(n, hostData.data());
-    trainResidualQuantizer_(n, hostData.data());
-
-    FAISS_ASSERT(index_);
-
-    this->is_trained = true;
-}
-
-void GpuIndexIVFPQ::addImpl_(int n, const float* x, const Index::idx_t* xids) {
-    // Device is already set in GpuIndex::add
-    FAISS_ASSERT(index_);
-    FAISS_ASSERT(n > 0);
-
-    // Data is already resident on the GPU
-    Tensor<float, 2, true> data(const_cast<float*>(x), {n, (int)this->d});
-    Tensor<Index::idx_t, 1, true> labels(const_cast<Index::idx_t*>(xids), {n});
-
-    // Not all vectors may be able to be added (some may contain NaNs etc)
-    index_->addVectors(data, labels);
-
-    // but keep the ntotal based on the total number of vectors that we
-    // attempted to add
-    ntotal += n;
-}
-
-void GpuIndexIVFPQ::searchImpl_(
-        int n,
-        const float* x,
-        int k,
-        float* distances,
-        Index::idx_t* labels) const {
-    // Device is already set in GpuIndex::search
-    FAISS_ASSERT(index_);
-    FAISS_ASSERT(n > 0);
-    FAISS_THROW_IF_NOT(nprobe > 0 && nprobe <= nlist);
-
-    // Data is already resident on the GPU
-    Tensor<float, 2, true> queries(const_cast<float*>(x), {n, (int)this->d});
-    Tensor<float, 2, true> outDistances(distances, {n, k});
-    Tensor<Index::idx_t, 2, true> outLabels(
-            const_cast<Index::idx_t*>(labels), {n, k});
-
-    index_->query(queries, nprobe, k, outDistances, outLabels);
-}
-
-int GpuIndexIVFPQ::getListLength(int listId) const {
-    FAISS_ASSERT(index_);
-    DeviceScope scope(config_.device);
-
-    return index_->getListLength(listId);
-}
-
-std::vector<uint8_t> GpuIndexIVFPQ::getListVectorData(
-        int listId,
-        bool gpuFormat) const {
-    FAISS_ASSERT(index_);
-    DeviceScope scope(config_.device);
-
-    return index_->getListVectorData(listId, gpuFormat);
-}
-
-std::vector<Index::idx_t> GpuIndexIVFPQ::getListIndices(int listId) const {
-    FAISS_ASSERT(index_);
-    DeviceScope scope(config_.device);
-
-    return index_->getListIndices(listId);
-}
-
-void GpuIndexIVFPQ::verifySettings_() const {
-    // Our implementation has these restrictions:
-
-    // Must have some number of lists
-    FAISS_THROW_IF_NOT_MSG(nlist > 0, "nlist must be >0");
-
-    // up to a single byte per code
-    if (ivfpqConfig_.interleavedLayout) {
-        FAISS_THROW_IF_NOT_FMT(
-                bitsPerCode_ == 4 || bitsPerCode_ == 5 || bitsPerCode_ == 6 ||
-                        bitsPerCode_ == 8,
-                "Bits per code must be between 4, 5, 6 or 8 (passed %d)",
-                bitsPerCode_);
-
-    } else {
-        FAISS_THROW_IF_NOT_FMT(
-                bitsPerCode_ == 8,
-                "Bits per code must be 8 (passed %d)",
-                bitsPerCode_);
-    }
-
-    // Sub-quantizers must evenly divide dimensions available
-    FAISS_THROW_IF_NOT_FMT(
-            this->d % subQuantizers_ == 0,
-            "Number of sub-quantizers (%d) must be an "
-            "even divisor of the number of dimensions (%d)",
-            subQuantizers_,
-            this->d);
-
-    // The number of bytes per encoded vector must be one we support
-    FAISS_THROW_IF_NOT_FMT(
-            ivfpqConfig_.interleavedLayout ||
-                    IVFPQ::isSupportedPQCodeLength(subQuantizers_),
-            "Number of bytes per encoded vector / sub-quantizers (%d) "
-            "is not supported",
-            subQuantizers_);
-
-    // We must have enough shared memory on the current device to store
-    // our lookup distances
-    int lookupTableSize = sizeof(float);
-    if (ivfpqConfig_.useFloat16LookupTables) {
-        lookupTableSize = sizeof(half);
-    }
-
-    // 64 bytes per code is only supported with usage of float16, at 2^8
-    // codes per subquantizer
-    size_t requiredSmemSize =
-            lookupTableSize * subQuantizers_ * utils::pow2(bitsPerCode_);
-    size_t smemPerBlock = getMaxSharedMemPerBlock(config_.device);
-
-    FAISS_THROW_IF_NOT_FMT(
-            requiredSmemSize <= getMaxSharedMemPerBlock(config_.device),
-            "Device %d has %zu bytes of shared memory, while "
-            "%d bits per code and %d sub-quantizers requires %zu "
-            "bytes. Consider useFloat16LookupTables and/or "
-            "reduce parameters",
-            config_.device,
-            smemPerBlock,
-            bitsPerCode_,
-            subQuantizers_,
-            requiredSmemSize);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndexIVFPQ.h b/faiss/gpu_cuda/GpuIndexIVFPQ.h
deleted file mode 100644
index 74f34874c5f4259726880a9ec58d46d95826c434..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndexIVFPQ.h
+++ /dev/null
@@ -1,179 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/GpuIndexIVF.h>
-#include <faiss/impl/ProductQuantizer.h>
-#include <memory>
-#include <vector>
-
-namespace faiss {
-struct IndexIVFPQ;
-}
-
-namespace faiss {
-namespace gpu {
-
-class GpuIndexFlat;
-class IVFPQ;
-
-struct GpuIndexIVFPQConfig : public GpuIndexIVFConfig {
-    inline GpuIndexIVFPQConfig()
-            : useFloat16LookupTables(false),
-              usePrecomputedTables(false),
-              interleavedLayout(false),
-              useMMCodeDistance(false) {}
-
-    /// Whether or not float16 residual distance tables are used in the
-    /// list scanning kernels. When subQuantizers * 2^bitsPerCode >
-    /// 16384, this is required.
-    bool useFloat16LookupTables;
-
-    /// Whether or not we enable the precomputed table option for
-    /// search, which can substantially increase the memory requirement.
-    bool usePrecomputedTables;
-
-    /// Use the alternative memory layout for the IVF lists
-    /// WARNING: this is a feature under development, do not use!
-    bool interleavedLayout;
-
-    /// Use GEMM-backed computation of PQ code distances for the no precomputed
-    /// table version of IVFPQ.
-    /// This is for debugging purposes, it should not substantially affect the
-    /// results one way for another.
-    ///
-    /// Note that MM code distance is enabled automatically if one uses a number
-    /// of dimensions per sub-quantizer that is not natively specialized (an odd
-    /// number like 7 or so).
-    bool useMMCodeDistance;
-};
-
-/// IVFPQ index for the GPU
-class GpuIndexIVFPQ : public GpuIndexIVF {
-   public:
-    /// Construct from a pre-existing faiss::IndexIVFPQ instance, copying
-    /// data over to the given GPU, if the input index is trained.
-    GpuIndexIVFPQ(
-            GpuResourcesProvider* provider,
-            const faiss::IndexIVFPQ* index,
-            GpuIndexIVFPQConfig config = GpuIndexIVFPQConfig());
-
-    /// Construct an empty index
-    GpuIndexIVFPQ(
-            GpuResourcesProvider* provider,
-            int dims,
-            int nlist,
-            int subQuantizers,
-            int bitsPerCode,
-            faiss::MetricType metric,
-            GpuIndexIVFPQConfig config = GpuIndexIVFPQConfig());
-
-    ~GpuIndexIVFPQ() override;
-
-    /// Reserve space on the GPU for the inverted lists for `num`
-    /// vectors, assumed equally distributed among
-
-    /// Initialize ourselves from the given CPU index; will overwrite
-    /// all data in ourselves
-    void copyFrom(const faiss::IndexIVFPQ* index);
-
-    /// Copy ourselves to the given CPU index; will overwrite all data
-    /// in the index instance
-    void copyTo(faiss::IndexIVFPQ* index) const;
-
-    /// Reserve GPU memory in our inverted lists for this number of vectors
-    void reserveMemory(size_t numVecs);
-
-    /// Enable or disable pre-computed codes
-    void setPrecomputedCodes(bool enable);
-
-    /// Are pre-computed codes enabled?
-    bool getPrecomputedCodes() const;
-
-    /// Return the number of sub-quantizers we are using
-    int getNumSubQuantizers() const;
-
-    /// Return the number of bits per PQ code
-    int getBitsPerCode() const;
-
-    /// Return the number of centroids per PQ code (2^bits per code)
-    int getCentroidsPerSubQuantizer() const;
-
-    /// After adding vectors, one can call this to reclaim device memory
-    /// to exactly the amount needed. Returns space reclaimed in bytes
-    size_t reclaimMemory();
-
-    /// Clears out all inverted lists, but retains the coarse and
-    /// product centroid information
-    void reset() override;
-
-    /// Trains the coarse and product quantizer based on the given vector data
-    void train(Index::idx_t n, const float* x) override;
-
-    /// Returns the number of vectors present in a particular inverted list
-    int getListLength(int listId) const override;
-
-    /// Return the encoded vector data contained in a particular inverted list,
-    /// for debugging purposes.
-    /// If gpuFormat is true, the data is returned as it is encoded in the
-    /// GPU-side representation.
-    /// Otherwise, it is converted to the CPU format.
-    /// compliant format, while the native GPU format may differ.
-    std::vector<uint8_t> getListVectorData(int listId, bool gpuFormat = false)
-            const override;
-
-    /// Return the vector indices contained in a particular inverted list, for
-    /// debugging purposes.
-    std::vector<Index::idx_t> getListIndices(int listId) const override;
-
-   public:
-    /// Like the CPU version, we expose a publically-visible ProductQuantizer
-    /// for manipulation
-    ProductQuantizer pq;
-
-   protected:
-    /// Called from GpuIndex for add/add_with_ids
-    void addImpl_(int n, const float* x, const Index::idx_t* ids) override;
-
-    /// Called from GpuIndex for search
-    void searchImpl_(
-            int n,
-            const float* x,
-            int k,
-            float* distances,
-            Index::idx_t* labels) const override;
-
-    /// Throws errors if configuration settings are improper
-    void verifySettings_() const;
-
-    /// Trains the PQ quantizer based on the given vector data
-    void trainResidualQuantizer_(Index::idx_t n, const float* x);
-
-   protected:
-    /// Our configuration options that we were initialized with
-    const GpuIndexIVFPQConfig ivfpqConfig_;
-
-    /// Runtime override: whether or not we use precomputed tables
-    bool usePrecomputedTables_;
-
-    /// Number of sub-quantizers per encoded vector
-    int subQuantizers_;
-
-    /// Bits per sub-quantizer code
-    int bitsPerCode_;
-
-    /// Desired inverted list memory reservation
-    size_t reserveMemoryVecs_;
-
-    /// The product quantizer instance that we own; contains the
-    /// inverted lists
-    std::unique_ptr<IVFPQ> index_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndexIVFScalarQuantizer.cu b/faiss/gpu_cuda/GpuIndexIVFScalarQuantizer.cu
deleted file mode 100644
index b5c640ab7e4f1c7598c07e8d90269b95200a0c6d..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndexIVFScalarQuantizer.cu
+++ /dev/null
@@ -1,275 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuIndexFlat.h>
-#include <faiss/gpu/GpuIndexIVFScalarQuantizer.h>
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/impl/GpuScalarQuantizer.cuh>
-#include <faiss/gpu/impl/IVFFlat.cuh>
-#include <faiss/gpu/utils/CopyUtils.cuh>
-#include <limits>
-
-namespace faiss {
-namespace gpu {
-
-GpuIndexIVFScalarQuantizer::GpuIndexIVFScalarQuantizer(
-        GpuResourcesProvider* provider,
-        const faiss::IndexIVFScalarQuantizer* index,
-        GpuIndexIVFScalarQuantizerConfig config)
-        : GpuIndexIVF(
-                  provider,
-                  index->d,
-                  index->metric_type,
-                  index->metric_arg,
-                  index->nlist,
-                  config),
-          sq(index->sq),
-          by_residual(index->by_residual),
-          ivfSQConfig_(config),
-          reserveMemoryVecs_(0) {
-    copyFrom(index);
-
-    FAISS_THROW_IF_NOT_MSG(
-            isSQSupported(sq.qtype), "Unsupported QuantizerType on GPU");
-}
-
-GpuIndexIVFScalarQuantizer::GpuIndexIVFScalarQuantizer(
-        GpuResourcesProvider* provider,
-        int dims,
-        int nlist,
-        faiss::ScalarQuantizer::QuantizerType qtype,
-        faiss::MetricType metric,
-        bool encodeResidual,
-        GpuIndexIVFScalarQuantizerConfig config)
-        : GpuIndexIVF(provider, dims, metric, 0, nlist, config),
-          sq(dims, qtype),
-          by_residual(encodeResidual),
-          ivfSQConfig_(config),
-          reserveMemoryVecs_(0) {
-    // faiss::Index params
-    this->is_trained = false;
-
-    // We haven't trained ourselves, so don't construct the IVFFlat
-    // index yet
-    FAISS_THROW_IF_NOT_MSG(
-            isSQSupported(sq.qtype), "Unsupported QuantizerType on GPU");
-}
-
-GpuIndexIVFScalarQuantizer::~GpuIndexIVFScalarQuantizer() {}
-
-void GpuIndexIVFScalarQuantizer::reserveMemory(size_t numVecs) {
-    reserveMemoryVecs_ = numVecs;
-    if (index_) {
-        DeviceScope scope(config_.device);
-        index_->reserveMemory(numVecs);
-    }
-}
-
-void GpuIndexIVFScalarQuantizer::copyFrom(
-        const faiss::IndexIVFScalarQuantizer* index) {
-    DeviceScope scope(config_.device);
-
-    // Clear out our old data
-    index_.reset();
-
-    // Copy what we need from the CPU index
-    GpuIndexIVF::copyFrom(index);
-    sq = index->sq;
-    by_residual = index->by_residual;
-
-    // The other index might not be trained, in which case we don't need to copy
-    // over the lists
-    if (!index->is_trained) {
-        return;
-    }
-
-    // Otherwise, we can populate ourselves from the other index
-    this->is_trained = true;
-
-    // Copy our lists as well
-    index_.reset(new IVFFlat(
-            resources_.get(),
-            quantizer->getGpuData(),
-            index->metric_type,
-            index->metric_arg,
-            by_residual,
-            &sq,
-            ivfSQConfig_.interleavedLayout,
-            ivfSQConfig_.indicesOptions,
-            config_.memorySpace));
-
-    // Copy all of the IVF data
-    index_->copyInvertedListsFrom(index->invlists);
-}
-
-void GpuIndexIVFScalarQuantizer::copyTo(
-        faiss::IndexIVFScalarQuantizer* index) const {
-    DeviceScope scope(config_.device);
-
-    // We must have the indices in order to copy to ourselves
-    FAISS_THROW_IF_NOT_MSG(
-            ivfSQConfig_.indicesOptions != INDICES_IVF,
-            "Cannot copy to CPU as GPU index doesn't retain "
-            "indices (INDICES_IVF)");
-
-    GpuIndexIVF::copyTo(index);
-    index->sq = sq;
-    index->code_size = sq.code_size;
-    index->by_residual = by_residual;
-
-    auto ivf = new ArrayInvertedLists(nlist, index->code_size);
-    index->replace_invlists(ivf, true);
-
-    if (index_) {
-        // Copy IVF lists
-        index_->copyInvertedListsTo(ivf);
-    }
-}
-
-size_t GpuIndexIVFScalarQuantizer::reclaimMemory() {
-    if (index_) {
-        DeviceScope scope(config_.device);
-
-        return index_->reclaimMemory();
-    }
-
-    return 0;
-}
-
-void GpuIndexIVFScalarQuantizer::reset() {
-    if (index_) {
-        DeviceScope scope(config_.device);
-
-        index_->reset();
-        this->ntotal = 0;
-    } else {
-        FAISS_ASSERT(this->ntotal == 0);
-    }
-}
-
-int GpuIndexIVFScalarQuantizer::getListLength(int listId) const {
-    FAISS_ASSERT(index_);
-    DeviceScope scope(config_.device);
-
-    return index_->getListLength(listId);
-}
-
-std::vector<uint8_t> GpuIndexIVFScalarQuantizer::getListVectorData(
-        int listId,
-        bool gpuFormat) const {
-    FAISS_ASSERT(index_);
-    DeviceScope scope(config_.device);
-
-    return index_->getListVectorData(listId, gpuFormat);
-}
-
-std::vector<Index::idx_t> GpuIndexIVFScalarQuantizer::getListIndices(
-        int listId) const {
-    FAISS_ASSERT(index_);
-    DeviceScope scope(config_.device);
-
-    return index_->getListIndices(listId);
-}
-
-void GpuIndexIVFScalarQuantizer::trainResiduals_(
-        Index::idx_t n,
-        const float* x) {
-    // The input is already guaranteed to be on the CPU
-    sq.train_residual(n, x, quantizer, by_residual, verbose);
-}
-
-void GpuIndexIVFScalarQuantizer::train(Index::idx_t n, const float* x) {
-    // For now, only support <= max int results
-    FAISS_THROW_IF_NOT_FMT(
-            n <= (Index::idx_t)std::numeric_limits<int>::max(),
-            "GPU index only supports up to %d indices",
-            std::numeric_limits<int>::max());
-
-    DeviceScope scope(config_.device);
-
-    if (this->is_trained) {
-        FAISS_ASSERT(quantizer->is_trained);
-        FAISS_ASSERT(quantizer->ntotal == nlist);
-        FAISS_ASSERT(index_);
-        return;
-    }
-
-    FAISS_ASSERT(!index_);
-
-    // FIXME: GPUize more of this
-    // First, make sure that the data is resident on the CPU, if it is not on
-    // the CPU, as we depend upon parts of the CPU code
-    auto hostData = toHost<float, 2>(
-            (float*)x,
-            resources_->getDefaultStream(config_.device),
-            {(int)n, (int)this->d});
-
-    trainQuantizer_(n, hostData.data());
-    trainResiduals_(n, hostData.data());
-
-    // The quantizer is now trained; construct the IVF index
-    index_.reset(new IVFFlat(
-            resources_.get(),
-            quantizer->getGpuData(),
-            this->metric_type,
-            this->metric_arg,
-            by_residual,
-            &sq,
-            ivfSQConfig_.interleavedLayout,
-            ivfSQConfig_.indicesOptions,
-            config_.memorySpace));
-
-    if (reserveMemoryVecs_) {
-        index_->reserveMemory(reserveMemoryVecs_);
-    }
-
-    this->is_trained = true;
-}
-
-void GpuIndexIVFScalarQuantizer::addImpl_(
-        int n,
-        const float* x,
-        const Index::idx_t* xids) {
-    // Device is already set in GpuIndex::add
-    FAISS_ASSERT(index_);
-    FAISS_ASSERT(n > 0);
-
-    // Data is already resident on the GPU
-    Tensor<float, 2, true> data(const_cast<float*>(x), {n, (int)this->d});
-    Tensor<Index::idx_t, 1, true> labels(const_cast<Index::idx_t*>(xids), {n});
-
-    // Not all vectors may be able to be added (some may contain NaNs etc)
-    index_->addVectors(data, labels);
-
-    // but keep the ntotal based on the total number of vectors that we
-    // attempted to add
-    ntotal += n;
-}
-
-void GpuIndexIVFScalarQuantizer::searchImpl_(
-        int n,
-        const float* x,
-        int k,
-        float* distances,
-        Index::idx_t* labels) const {
-    // Device is already set in GpuIndex::search
-    FAISS_ASSERT(index_);
-    FAISS_ASSERT(n > 0);
-    FAISS_THROW_IF_NOT(nprobe > 0 && nprobe <= nlist);
-
-    // Data is already resident on the GPU
-    Tensor<float, 2, true> queries(const_cast<float*>(x), {n, (int)this->d});
-    Tensor<float, 2, true> outDistances(distances, {n, k});
-    Tensor<Index::idx_t, 2, true> outLabels(
-            const_cast<Index::idx_t*>(labels), {n, k});
-
-    index_->query(queries, nprobe, k, outDistances, outLabels);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndexIVFScalarQuantizer.h b/faiss/gpu_cuda/GpuIndexIVFScalarQuantizer.h
deleted file mode 100644
index 437e5f515ef400b9d4742e4b10afb3f0cda3cac8..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndexIVFScalarQuantizer.h
+++ /dev/null
@@ -1,126 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/IndexScalarQuantizer.h>
-#include <faiss/gpu/GpuIndexIVF.h>
-#include <memory>
-
-namespace faiss {
-namespace gpu {
-
-class IVFFlat;
-class GpuIndexFlat;
-
-struct GpuIndexIVFScalarQuantizerConfig : public GpuIndexIVFConfig {
-    inline GpuIndexIVFScalarQuantizerConfig() : interleavedLayout(true) {}
-
-    /// Use the alternative memory layout for the IVF lists
-    /// (currently the default)
-    bool interleavedLayout;
-};
-
-/// Wrapper around the GPU implementation that looks like
-/// faiss::IndexIVFScalarQuantizer
-class GpuIndexIVFScalarQuantizer : public GpuIndexIVF {
-   public:
-    /// Construct from a pre-existing faiss::IndexIVFScalarQuantizer instance,
-    /// copying data over to the given GPU, if the input index is trained.
-    GpuIndexIVFScalarQuantizer(
-            GpuResourcesProvider* provider,
-            const faiss::IndexIVFScalarQuantizer* index,
-            GpuIndexIVFScalarQuantizerConfig config =
-                    GpuIndexIVFScalarQuantizerConfig());
-
-    /// Constructs a new instance with an empty flat quantizer; the user
-    /// provides the number of lists desired.
-    GpuIndexIVFScalarQuantizer(
-            GpuResourcesProvider* provider,
-            int dims,
-            int nlist,
-            faiss::ScalarQuantizer::QuantizerType qtype,
-            faiss::MetricType metric = MetricType::METRIC_L2,
-            bool encodeResidual = true,
-            GpuIndexIVFScalarQuantizerConfig config =
-                    GpuIndexIVFScalarQuantizerConfig());
-
-    ~GpuIndexIVFScalarQuantizer() override;
-
-    /// Reserve GPU memory in our inverted lists for this number of vectors
-    void reserveMemory(size_t numVecs);
-
-    /// Initialize ourselves from the given CPU index; will overwrite
-    /// all data in ourselves
-    void copyFrom(const faiss::IndexIVFScalarQuantizer* index);
-
-    /// Copy ourselves to the given CPU index; will overwrite all data
-    /// in the index instance
-    void copyTo(faiss::IndexIVFScalarQuantizer* index) const;
-
-    /// After adding vectors, one can call this to reclaim device memory
-    /// to exactly the amount needed. Returns space reclaimed in bytes
-    size_t reclaimMemory();
-
-    /// Clears out all inverted lists, but retains the coarse and scalar
-    /// quantizer information
-    void reset() override;
-
-    /// Trains the coarse and scalar quantizer based on the given vector data
-    void train(Index::idx_t n, const float* x) override;
-
-    /// Returns the number of vectors present in a particular inverted list
-    int getListLength(int listId) const override;
-
-    /// Return the encoded vector data contained in a particular inverted list,
-    /// for debugging purposes.
-    /// If gpuFormat is true, the data is returned as it is encoded in the
-    /// GPU-side representation.
-    /// Otherwise, it is converted to the CPU format.
-    /// compliant format, while the native GPU format may differ.
-    std::vector<uint8_t> getListVectorData(int listId, bool gpuFormat = false)
-            const override;
-
-    /// Return the vector indices contained in a particular inverted list, for
-    /// debugging purposes.
-    std::vector<Index::idx_t> getListIndices(int listId) const override;
-
-   protected:
-    /// Called from GpuIndex for add/add_with_ids
-    void addImpl_(int n, const float* x, const Index::idx_t* ids) override;
-
-    /// Called from GpuIndex for search
-    void searchImpl_(
-            int n,
-            const float* x,
-            int k,
-            float* distances,
-            Index::idx_t* labels) const override;
-
-    /// Called from train to handle SQ residual training
-    void trainResiduals_(Index::idx_t n, const float* x);
-
-   public:
-    /// Exposed like the CPU version
-    faiss::ScalarQuantizer sq;
-
-    /// Exposed like the CPU version
-    bool by_residual;
-
-   protected:
-    /// Our configuration options
-    const GpuIndexIVFScalarQuantizerConfig ivfSQConfig_;
-
-    /// Desired inverted list memory reservation
-    size_t reserveMemoryVecs_;
-
-    /// Instance that we own; contains the inverted list
-    std::unique_ptr<IVFFlat> index_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuIndicesOptions.h b/faiss/gpu_cuda/GpuIndicesOptions.h
deleted file mode 100644
index 2f318ed217d0ab69c83e038f3bd8bb1caf696e9c..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuIndicesOptions.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-namespace faiss {
-namespace gpu {
-
-/// How user vector index data is stored on the GPU
-enum IndicesOptions {
-    /// The user indices are only stored on the CPU; the GPU returns
-    /// (inverted list, offset) to the CPU which is then translated to
-    /// the real user index.
-    INDICES_CPU = 0,
-    /// The indices are not stored at all, on either the CPU or
-    /// GPU. Only (inverted list, offset) is returned to the user as the
-    /// index.
-    INDICES_IVF = 1,
-    /// Indices are stored as 32 bit integers on the GPU, but returned
-    /// as 64 bit integers
-    INDICES_32_BIT = 2,
-    /// Indices are stored as 64 bit integers on the GPU
-    INDICES_64_BIT = 3,
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuResources.cpp b/faiss/gpu_cuda/GpuResources.cpp
deleted file mode 100644
index d8756f4b4bca310fa2f12901823cb5faf9982d99..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuResources.cpp
+++ /dev/null
@@ -1,188 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <sstream>
-
-namespace faiss {
-namespace gpu {
-
-std::string allocTypeToString(AllocType t) {
-    switch (t) {
-        case AllocType::Other:
-            return "Other";
-        case AllocType::FlatData:
-            return "FlatData";
-        case AllocType::IVFLists:
-            return "IVFLists";
-        case AllocType::Quantizer:
-            return "Quantizer";
-        case AllocType::QuantizerPrecomputedCodes:
-            return "QuantizerPrecomputedCodes";
-        case AllocType::TemporaryMemoryBuffer:
-            return "TemporaryMemoryBuffer";
-        case AllocType::TemporaryMemoryOverflow:
-            return "TemporaryMemoryOverflow";
-        default:
-            return "Unknown";
-    }
-}
-
-std::string memorySpaceToString(MemorySpace s) {
-    switch (s) {
-        case MemorySpace::Temporary:
-            return "Temporary";
-        case MemorySpace::Device:
-            return "Device";
-        case MemorySpace::Unified:
-            return "Unified";
-        default:
-            return "Unknown";
-    }
-}
-
-std::string AllocInfo::toString() const {
-    std::stringstream ss;
-    ss << "type " << allocTypeToString(type) << " dev " << device << " space "
-       << memorySpaceToString(space) << " stream " << (void*)stream;
-
-    return ss.str();
-}
-
-std::string AllocRequest::toString() const {
-    std::stringstream ss;
-    ss << AllocInfo::toString() << " size " << size << " bytes";
-
-    return ss.str();
-}
-
-AllocInfo makeDevAlloc(AllocType at, cudaStream_t st) {
-    return AllocInfo(at, getCurrentDevice(), MemorySpace::Device, st);
-}
-
-AllocInfo makeTempAlloc(AllocType at, cudaStream_t st) {
-    return AllocInfo(at, getCurrentDevice(), MemorySpace::Temporary, st);
-}
-
-AllocInfo makeSpaceAlloc(AllocType at, MemorySpace sp, cudaStream_t st) {
-    return AllocInfo(at, getCurrentDevice(), sp, st);
-}
-
-//
-// GpuMemoryReservation
-//
-
-GpuMemoryReservation::GpuMemoryReservation()
-        : res(nullptr), device(0), stream(nullptr), data(nullptr), size(0) {}
-
-GpuMemoryReservation::GpuMemoryReservation(
-        GpuResources* r,
-        int dev,
-        cudaStream_t str,
-        void* p,
-        size_t sz)
-        : res(r), device(dev), stream(str), data(p), size(sz) {}
-
-GpuMemoryReservation::GpuMemoryReservation(GpuMemoryReservation&& m) noexcept {
-    res = m.res;
-    m.res = nullptr;
-    device = m.device;
-    m.device = 0;
-    stream = m.stream;
-    m.stream = nullptr;
-    data = m.data;
-    m.data = nullptr;
-    size = m.size;
-    m.size = 0;
-}
-
-GpuMemoryReservation& GpuMemoryReservation::operator=(
-        GpuMemoryReservation&& m) {
-    // Can't be both a valid allocation and the same allocation
-    FAISS_ASSERT(
-            !(res && res == m.res && device == m.device && data == m.data));
-
-    release();
-    res = m.res;
-    m.res = nullptr;
-    device = m.device;
-    m.device = 0;
-    stream = m.stream;
-    m.stream = nullptr;
-    data = m.data;
-    m.data = nullptr;
-    size = m.size;
-    m.size = 0;
-
-    return *this;
-}
-
-void GpuMemoryReservation::release() {
-    if (res) {
-        res->deallocMemory(device, data);
-        res = nullptr;
-        device = 0;
-        stream = nullptr;
-        data = nullptr;
-        size = 0;
-    }
-}
-
-GpuMemoryReservation::~GpuMemoryReservation() {
-    if (res) {
-        res->deallocMemory(device, data);
-    }
-}
-
-//
-// GpuResources
-//
-
-GpuResources::~GpuResources() {}
-
-cublasHandle_t GpuResources::getBlasHandleCurrentDevice() {
-    return getBlasHandle(getCurrentDevice());
-}
-
-cudaStream_t GpuResources::getDefaultStreamCurrentDevice() {
-    return getDefaultStream(getCurrentDevice());
-}
-
-std::vector<cudaStream_t> GpuResources::getAlternateStreamsCurrentDevice() {
-    return getAlternateStreams(getCurrentDevice());
-}
-
-cudaStream_t GpuResources::getAsyncCopyStreamCurrentDevice() {
-    return getAsyncCopyStream(getCurrentDevice());
-}
-
-void GpuResources::syncDefaultStream(int device) {
-    CUDA_VERIFY(cudaStreamSynchronize(getDefaultStream(device)));
-}
-
-void GpuResources::syncDefaultStreamCurrentDevice() {
-    syncDefaultStream(getCurrentDevice());
-}
-
-GpuMemoryReservation GpuResources::allocMemoryHandle(const AllocRequest& req) {
-    return GpuMemoryReservation(
-            this, req.device, req.stream, allocMemory(req), req.size);
-}
-
-size_t GpuResources::getTempMemoryAvailableCurrentDevice() const {
-    return getTempMemoryAvailable(getCurrentDevice());
-}
-
-//
-// GpuResourcesProvider
-//
-
-GpuResourcesProvider::~GpuResourcesProvider() {}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/GpuResources.h b/faiss/gpu_cuda/GpuResources.h
deleted file mode 100644
index bf2f93b2eaa2bfd398efde0d040926b8e0cfa511..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/GpuResources.h
+++ /dev/null
@@ -1,264 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cublas_v2.h>
-#include <cuda_runtime.h>
-#include <faiss/impl/FaissAssert.h>
-#include <memory>
-#include <utility>
-#include <vector>
-
-namespace faiss {
-namespace gpu {
-
-class GpuResources;
-
-enum AllocType {
-    /// Unknown allocation type or miscellaneous (not currently categorized)
-    Other = 0,
-
-    /// Primary data storage for GpuIndexFlat (the raw matrix of vectors and
-    /// vector norms if needed)
-    FlatData = 1,
-
-    /// Primary data storage for GpuIndexIVF* (the storage for each individual
-    /// IVF
-    /// list)
-    IVFLists = 2,
-
-    /// Quantizer (PQ, SQ) dictionary information
-    Quantizer = 3,
-
-    /// For GpuIndexIVFPQ, "precomputed codes" for more efficient PQ lookup
-    /// require the use of possibly large tables. These are marked separately
-    /// from
-    /// Quantizer as these can frequently be 100s - 1000s of MiB in size
-    QuantizerPrecomputedCodes = 4,
-
-    ///
-    /// StandardGpuResources implementation specific types
-    ///
-
-    /// When using StandardGpuResources, temporary memory allocations
-    /// (MemorySpace::Temporary) come out of a stack region of memory that is
-    /// allocated up front for each gpu (e.g., 1.5 GiB upon initialization).
-    /// This
-    /// allocation by StandardGpuResources is marked with this AllocType.
-    TemporaryMemoryBuffer = 10,
-
-    /// When using StandardGpuResources, any MemorySpace::Temporary allocations
-    /// that cannot be satisfied within the TemporaryMemoryBuffer region fall
-    /// back
-    /// to calling cudaMalloc which are sized to just the request at hand. These
-    /// "overflow" temporary allocations are marked with this AllocType.
-    TemporaryMemoryOverflow = 11,
-};
-
-/// Convert an AllocType to string
-std::string allocTypeToString(AllocType t);
-
-/// Memory regions accessible to the GPU
-enum MemorySpace {
-    /// Temporary device memory (guaranteed to no longer be used upon exit of a
-    /// top-level index call, and where the streams using it have completed GPU
-    /// work). Typically backed by Device memory (cudaMalloc/cudaFree).
-    Temporary = 0,
-
-    /// Managed using cudaMalloc/cudaFree (typical GPU device memory)
-    Device = 1,
-
-    /// Managed using cudaMallocManaged/cudaFree (typical Unified CPU/GPU
-    /// memory)
-    Unified = 2,
-};
-
-/// Convert a MemorySpace to string
-std::string memorySpaceToString(MemorySpace s);
-
-/// Information on what/where an allocation is
-struct AllocInfo {
-    inline AllocInfo()
-            : type(AllocType::Other),
-              device(0),
-              space(MemorySpace::Device),
-              stream(nullptr) {}
-
-    inline AllocInfo(AllocType at, int dev, MemorySpace sp, cudaStream_t st)
-            : type(at), device(dev), space(sp), stream(st) {}
-
-    /// Returns a string representation of this info
-    std::string toString() const;
-
-    /// The internal category of the allocation
-    AllocType type;
-
-    /// The device on which the allocation is happening
-    int device;
-
-    /// The memory space of the allocation
-    MemorySpace space;
-
-    /// The stream on which new work on the memory will be ordered (e.g., if a
-    /// piece of memory cached and to be returned for this call was last used on
-    /// stream 3 and a new memory request is for stream 4, the memory manager
-    /// will synchronize stream 4 to wait for the completion of stream 3 via
-    /// events or other stream synchronization.
-    ///
-    /// The memory manager guarantees that the returned memory is free to use
-    /// without data races on this stream specified.
-    cudaStream_t stream;
-};
-
-/// Create an AllocInfo for the current device with MemorySpace::Device
-AllocInfo makeDevAlloc(AllocType at, cudaStream_t st);
-
-/// Create an AllocInfo for the current device with MemorySpace::Temporary
-AllocInfo makeTempAlloc(AllocType at, cudaStream_t st);
-
-/// Create an AllocInfo for the current device
-AllocInfo makeSpaceAlloc(AllocType at, MemorySpace sp, cudaStream_t st);
-
-/// Information on what/where an allocation is, along with how big it should be
-struct AllocRequest : public AllocInfo {
-    inline AllocRequest() : AllocInfo(), size(0) {}
-
-    inline AllocRequest(const AllocInfo& info, size_t sz)
-            : AllocInfo(info), size(sz) {}
-
-    inline AllocRequest(
-            AllocType at,
-            int dev,
-            MemorySpace sp,
-            cudaStream_t st,
-            size_t sz)
-            : AllocInfo(at, dev, sp, st), size(sz) {}
-
-    /// Returns a string representation of this request
-    std::string toString() const;
-
-    /// The size in bytes of the allocation
-    size_t size;
-};
-
-/// A RAII object that manages a temporary memory request
-struct GpuMemoryReservation {
-    GpuMemoryReservation();
-    GpuMemoryReservation(
-            GpuResources* r,
-            int dev,
-            cudaStream_t str,
-            void* p,
-            size_t sz);
-    GpuMemoryReservation(GpuMemoryReservation&& m) noexcept;
-    ~GpuMemoryReservation();
-
-    GpuMemoryReservation& operator=(GpuMemoryReservation&& m);
-
-    inline void* get() {
-        return data;
-    }
-
-    void release();
-
-    GpuResources* res;
-    int device;
-    cudaStream_t stream;
-    void* data;
-    size_t size;
-};
-
-/// Base class of GPU-side resource provider; hides provision of
-/// cuBLAS handles, CUDA streams and all device memory allocation performed
-class GpuResources {
-   public:
-    virtual ~GpuResources();
-
-    /// Call to pre-allocate resources for a particular device. If this is
-    /// not called, then resources will be allocated at the first time
-    /// of demand
-    virtual void initializeForDevice(int device) = 0;
-
-    /// Returns the cuBLAS handle that we use for the given device
-    virtual cublasHandle_t getBlasHandle(int device) = 0;
-
-    /// Returns the stream that we order all computation on for the
-    /// given device
-    virtual cudaStream_t getDefaultStream(int device) = 0;
-
-    /// Overrides the default stream for a device to the user-supplied stream.
-    /// The resources object does not own this stream (i.e., it will not destroy
-    /// it).
-    virtual void setDefaultStream(int device, cudaStream_t stream) = 0;
-
-    /// Returns the set of alternative streams that we use for the given device
-    virtual std::vector<cudaStream_t> getAlternateStreams(int device) = 0;
-
-    /// Memory management
-    /// Returns an allocation from the given memory space, ordered with respect
-    /// to the given stream (i.e., the first user will be a kernel in this
-    /// stream). All allocations are sized internally to be the next highest
-    /// multiple of 16 bytes, and all allocations returned are guaranteed to be
-    /// 16 byte aligned.
-    virtual void* allocMemory(const AllocRequest& req) = 0;
-
-    /// Returns a previous allocation
-    virtual void deallocMemory(int device, void* in) = 0;
-
-    /// For MemorySpace::Temporary, how much space is immediately available
-    /// without cudaMalloc allocation?
-    virtual size_t getTempMemoryAvailable(int device) const = 0;
-
-    /// Returns the available CPU pinned memory buffer
-    virtual std::pair<void*, size_t> getPinnedMemory() = 0;
-
-    /// Returns the stream on which we perform async CPU <-> GPU copies
-    virtual cudaStream_t getAsyncCopyStream(int device) = 0;
-
-    ///
-    /// Functions provided by default
-    ///
-
-    /// Calls getBlasHandle with the current device
-    cublasHandle_t getBlasHandleCurrentDevice();
-
-    /// Calls getDefaultStream with the current device
-    cudaStream_t getDefaultStreamCurrentDevice();
-
-    /// Calls getTempMemoryAvailable with the current device
-    size_t getTempMemoryAvailableCurrentDevice() const;
-
-    /// Returns a temporary memory allocation via a RAII object
-    GpuMemoryReservation allocMemoryHandle(const AllocRequest& req);
-
-    /// Synchronizes the CPU with respect to the default stream for the
-    /// given device
-    // equivalent to cudaDeviceSynchronize(getDefaultStream(device))
-    void syncDefaultStream(int device);
-
-    /// Calls syncDefaultStream for the current device
-    void syncDefaultStreamCurrentDevice();
-
-    /// Calls getAlternateStreams for the current device
-    std::vector<cudaStream_t> getAlternateStreamsCurrentDevice();
-
-    /// Calls getAsyncCopyStream for the current device
-    cudaStream_t getAsyncCopyStreamCurrentDevice();
-};
-
-/// Interface for a provider of a shared resources object
-class GpuResourcesProvider {
-   public:
-    virtual ~GpuResourcesProvider();
-
-    /// Returns the shared resources object
-    virtual std::shared_ptr<GpuResources> getResources() = 0;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/StandardGpuResources.cpp b/faiss/gpu_cuda/StandardGpuResources.cpp
deleted file mode 100644
index cdb5ed9fc2ddcbddae28090c674745cf028b9b1b..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/StandardGpuResources.cpp
+++ /dev/null
@@ -1,616 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/impl/FaissAssert.h>
-#include <iostream>
-#include <limits>
-#include <sstream>
-
-namespace faiss {
-namespace gpu {
-
-namespace {
-
-// How many streams per device we allocate by default (for multi-streaming)
-constexpr int kNumStreams = 2;
-
-// Use 256 MiB of pinned memory for async CPU <-> GPU copies by default
-constexpr size_t kDefaultPinnedMemoryAllocation = (size_t)256 * 1024 * 1024;
-
-// Default temporary memory allocation for <= 4 GiB memory GPUs
-constexpr size_t k4GiBTempMem = (size_t)512 * 1024 * 1024;
-
-// Default temporary memory allocation for <= 8 GiB memory GPUs
-constexpr size_t k8GiBTempMem = (size_t)1024 * 1024 * 1024;
-
-// Maximum temporary memory allocation for all GPUs
-constexpr size_t kMaxTempMem = (size_t)1536 * 1024 * 1024;
-
-std::string allocsToString(const std::unordered_map<void*, AllocRequest>& map) {
-    // Produce a sorted list of all outstanding allocations by type
-    std::unordered_map<AllocType, std::pair<int, size_t>> stats;
-
-    for (auto& entry : map) {
-        auto& a = entry.second;
-
-        auto it = stats.find(a.type);
-        if (it != stats.end()) {
-            stats[a.type].first++;
-            stats[a.type].second += a.size;
-        } else {
-            stats[a.type] = std::make_pair(1, a.size);
-        }
-    }
-
-    std::stringstream ss;
-    for (auto& entry : stats) {
-        ss << "Alloc type " << allocTypeToString(entry.first) << ": "
-           << entry.second.first << " allocations, " << entry.second.second
-           << " bytes\n";
-    }
-
-    return ss.str();
-}
-
-} // namespace
-
-//
-// StandardGpuResourcesImpl
-//
-
-StandardGpuResourcesImpl::StandardGpuResourcesImpl()
-        : pinnedMemAlloc_(nullptr),
-          pinnedMemAllocSize_(0),
-          // let the adjustment function determine the memory size for us by
-          // passing in a huge value that will then be adjusted
-          tempMemSize_(getDefaultTempMemForGPU(
-                  -1,
-                  std::numeric_limits<size_t>::max())),
-          pinnedMemSize_(kDefaultPinnedMemoryAllocation),
-          allocLogging_(false) {}
-
-StandardGpuResourcesImpl::~StandardGpuResourcesImpl() {
-    // The temporary memory allocator has allocated memory through us, so clean
-    // that up before we finish fully de-initializing ourselves
-    tempMemory_.clear();
-
-    // Make sure all allocations have been freed
-    bool allocError = false;
-
-    for (auto& entry : allocs_) {
-        auto& map = entry.second;
-
-        if (!map.empty()) {
-            std::cerr
-                    << "StandardGpuResources destroyed with allocations outstanding:\n"
-                    << "Device " << entry.first
-                    << " outstanding allocations:\n";
-            std::cerr << allocsToString(map);
-            allocError = true;
-        }
-    }
-
-    FAISS_ASSERT_MSG(
-            !allocError, "GPU memory allocations not properly cleaned up");
-
-    for (auto& entry : defaultStreams_) {
-        DeviceScope scope(entry.first);
-
-        // We created these streams, so are responsible for destroying them
-        CUDA_VERIFY(cudaStreamDestroy(entry.second));
-    }
-
-    for (auto& entry : alternateStreams_) {
-        DeviceScope scope(entry.first);
-
-        for (auto stream : entry.second) {
-            CUDA_VERIFY(cudaStreamDestroy(stream));
-        }
-    }
-
-    for (auto& entry : asyncCopyStreams_) {
-        DeviceScope scope(entry.first);
-
-        CUDA_VERIFY(cudaStreamDestroy(entry.second));
-    }
-
-    for (auto& entry : blasHandles_) {
-        DeviceScope scope(entry.first);
-
-        auto blasStatus = cublasDestroy(entry.second);
-        FAISS_ASSERT(blasStatus == CUBLAS_STATUS_SUCCESS);
-    }
-
-    if (pinnedMemAlloc_) {
-        auto err = cudaFreeHost(pinnedMemAlloc_);
-        FAISS_ASSERT_FMT(
-                err == cudaSuccess,
-                "Failed to cudaFreeHost pointer %p (error %d %s)",
-                pinnedMemAlloc_,
-                (int)err,
-                cudaGetErrorString(err));
-    }
-}
-
-size_t StandardGpuResourcesImpl::getDefaultTempMemForGPU(
-        int device,
-        size_t requested) {
-    auto totalMem = device != -1 ? getDeviceProperties(device).totalGlobalMem
-                                 : std::numeric_limits<size_t>::max();
-
-    if (totalMem <= (size_t)4 * 1024 * 1024 * 1024) {
-        // If the GPU has <= 4 GiB of memory, reserve 512 MiB
-
-        if (requested > k4GiBTempMem) {
-            return k4GiBTempMem;
-        }
-    } else if (totalMem <= (size_t)8 * 1024 * 1024 * 1024) {
-        // If the GPU has <= 8 GiB of memory, reserve 1 GiB
-
-        if (requested > k8GiBTempMem) {
-            return k8GiBTempMem;
-        }
-    } else {
-        // Never use more than 1.5 GiB
-        if (requested > kMaxTempMem) {
-            return kMaxTempMem;
-        }
-    }
-
-    // use whatever lower limit the user requested
-    return requested;
-}
-
-void StandardGpuResourcesImpl::noTempMemory() {
-    setTempMemory(0);
-}
-
-void StandardGpuResourcesImpl::setTempMemory(size_t size) {
-    if (tempMemSize_ != size) {
-        // adjust based on general limits
-        tempMemSize_ = getDefaultTempMemForGPU(-1, size);
-
-        // We need to re-initialize memory resources for all current devices
-        // that have been initialized. This should be safe to do, even if we are
-        // currently running work, because the cudaFree call that this implies
-        // will force-synchronize all GPUs with the CPU
-        for (auto& p : tempMemory_) {
-            int device = p.first;
-            // Free the existing memory first
-            p.second.reset();
-
-            // Allocate new
-            p.second = std::unique_ptr<StackDeviceMemory>(new StackDeviceMemory(
-                    this,
-                    p.first,
-                    // adjust for this specific device
-                    getDefaultTempMemForGPU(device, tempMemSize_)));
-        }
-    }
-}
-
-void StandardGpuResourcesImpl::setPinnedMemory(size_t size) {
-    // Should not call this after devices have been initialized
-    FAISS_ASSERT(defaultStreams_.size() == 0);
-    FAISS_ASSERT(!pinnedMemAlloc_);
-
-    pinnedMemSize_ = size;
-}
-
-void StandardGpuResourcesImpl::setDefaultStream(
-        int device,
-        cudaStream_t stream) {
-    if (isInitialized(device)) {
-        // A new series of calls may not be ordered with what was the previous
-        // stream, so if the stream being specified is different, then we need
-        // to ensure ordering between the two (new stream waits on old).
-        auto it = userDefaultStreams_.find(device);
-        cudaStream_t prevStream = nullptr;
-
-        if (it != userDefaultStreams_.end()) {
-            prevStream = it->second;
-        } else {
-            FAISS_ASSERT(defaultStreams_.count(device));
-            prevStream = defaultStreams_[device];
-        }
-
-        if (prevStream != stream) {
-            streamWait({stream}, {prevStream});
-        }
-    }
-
-    userDefaultStreams_[device] = stream;
-}
-
-void StandardGpuResourcesImpl::revertDefaultStream(int device) {
-    if (isInitialized(device)) {
-        auto it = userDefaultStreams_.find(device);
-
-        if (it != userDefaultStreams_.end()) {
-            // There was a user stream set that we need to synchronize against
-            cudaStream_t prevStream = userDefaultStreams_[device];
-
-            FAISS_ASSERT(defaultStreams_.count(device));
-            cudaStream_t newStream = defaultStreams_[device];
-
-            streamWait({newStream}, {prevStream});
-        }
-    }
-
-    userDefaultStreams_.erase(device);
-}
-
-void StandardGpuResourcesImpl::setDefaultNullStreamAllDevices() {
-    for (int dev = 0; dev < getNumDevices(); ++dev) {
-        setDefaultStream(dev, nullptr);
-    }
-}
-
-void StandardGpuResourcesImpl::setLogMemoryAllocations(bool enable) {
-    allocLogging_ = enable;
-}
-
-bool StandardGpuResourcesImpl::isInitialized(int device) const {
-    // Use default streams as a marker for whether or not a certain
-    // device has been initialized
-    return defaultStreams_.count(device) != 0;
-}
-
-void StandardGpuResourcesImpl::initializeForDevice(int device) {
-    if (isInitialized(device)) {
-        return;
-    }
-
-    // If this is the first device that we're initializing, create our
-    // pinned memory allocation
-    if (defaultStreams_.empty() && pinnedMemSize_ > 0) {
-        auto err = cudaHostAlloc(
-                &pinnedMemAlloc_, pinnedMemSize_, cudaHostAllocDefault);
-
-        FAISS_THROW_IF_NOT_FMT(
-                err == cudaSuccess,
-                "failed to cudaHostAlloc %zu bytes for CPU <-> GPU "
-                "async copy buffer (error %d %s)",
-                pinnedMemSize_,
-                (int)err,
-                cudaGetErrorString(err));
-
-        pinnedMemAllocSize_ = pinnedMemSize_;
-    }
-
-    FAISS_ASSERT(device < getNumDevices());
-    DeviceScope scope(device);
-
-    // Make sure that device properties for all devices are cached
-    auto& prop = getDeviceProperties(device);
-
-    // Also check to make sure we meet our minimum compute capability (3.0)
-    FAISS_ASSERT_FMT(
-            prop.major >= 3,
-            "Device id %d with CC %d.%d not supported, "
-            "need 3.0+ compute capability",
-            device,
-            prop.major,
-            prop.minor);
-
-    // Our code is pre-built with and expects warpSize == 32, validate that
-    FAISS_ASSERT_FMT(
-            prop.warpSize == 32,
-            "Device id %d does not have expected warpSize of 32",
-            device);
-
-    // Create streams
-    cudaStream_t defaultStream = 0;
-    CUDA_VERIFY(
-            cudaStreamCreateWithFlags(&defaultStream, cudaStreamNonBlocking));
-
-    defaultStreams_[device] = defaultStream;
-
-    cudaStream_t asyncCopyStream = 0;
-    CUDA_VERIFY(
-            cudaStreamCreateWithFlags(&asyncCopyStream, cudaStreamNonBlocking));
-
-    asyncCopyStreams_[device] = asyncCopyStream;
-
-    std::vector<cudaStream_t> deviceStreams;
-    for (int j = 0; j < kNumStreams; ++j) {
-        cudaStream_t stream = 0;
-        CUDA_VERIFY(cudaStreamCreateWithFlags(&stream, cudaStreamNonBlocking));
-
-        deviceStreams.push_back(stream);
-    }
-
-    alternateStreams_[device] = std::move(deviceStreams);
-
-    // Create cuBLAS handle
-    cublasHandle_t blasHandle = 0;
-    auto blasStatus = cublasCreate(&blasHandle);
-    FAISS_ASSERT(blasStatus == CUBLAS_STATUS_SUCCESS);
-    blasHandles_[device] = blasHandle;
-
-    // For CUDA 10 on V100, enabling tensor core usage would enable automatic
-    // rounding down of inputs to f16 (though accumulate in f32) which results
-    // in unacceptable loss of precision in general. For CUDA 11 / A100, only
-    // enable tensor core support if it doesn't result in a loss of precision.
-#if CUDA_VERSION >= 11000
-    cublasSetMathMode(
-            blasHandle, CUBLAS_MATH_DISALLOW_REDUCED_PRECISION_REDUCTION);
-#endif
-
-    FAISS_ASSERT(allocs_.count(device) == 0);
-    allocs_[device] = std::unordered_map<void*, AllocRequest>();
-
-    FAISS_ASSERT(tempMemory_.count(device) == 0);
-    auto mem = std::unique_ptr<StackDeviceMemory>(new StackDeviceMemory(
-            this,
-            device,
-            // adjust for this specific device
-            getDefaultTempMemForGPU(device, tempMemSize_)));
-
-    tempMemory_.emplace(device, std::move(mem));
-}
-
-cublasHandle_t StandardGpuResourcesImpl::getBlasHandle(int device) {
-    initializeForDevice(device);
-    return blasHandles_[device];
-}
-
-cudaStream_t StandardGpuResourcesImpl::getDefaultStream(int device) {
-    initializeForDevice(device);
-
-    auto it = userDefaultStreams_.find(device);
-    if (it != userDefaultStreams_.end()) {
-        // There is a user override stream set
-        return it->second;
-    }
-
-    // Otherwise, our base default stream
-    return defaultStreams_[device];
-}
-
-std::vector<cudaStream_t> StandardGpuResourcesImpl::getAlternateStreams(
-        int device) {
-    initializeForDevice(device);
-    return alternateStreams_[device];
-}
-
-std::pair<void*, size_t> StandardGpuResourcesImpl::getPinnedMemory() {
-    return std::make_pair(pinnedMemAlloc_, pinnedMemAllocSize_);
-}
-
-cudaStream_t StandardGpuResourcesImpl::getAsyncCopyStream(int device) {
-    initializeForDevice(device);
-    return asyncCopyStreams_[device];
-}
-
-void* StandardGpuResourcesImpl::allocMemory(const AllocRequest& req) {
-    initializeForDevice(req.device);
-
-    // We don't allocate a placeholder for zero-sized allocations
-    if (req.size == 0) {
-        return nullptr;
-    }
-
-    // cudaMalloc guarantees allocation alignment to 256 bytes; do the same here
-    // for alignment purposes (to reduce memory transaction overhead etc)
-    auto adjReq = req;
-    adjReq.size = utils::roundUp(adjReq.size, (size_t)256);
-
-    void* p = nullptr;
-
-    if (adjReq.space == MemorySpace::Temporary) {
-        // If we don't have enough space in our temporary memory manager, we
-        // need to allocate this request separately
-        auto& tempMem = tempMemory_[adjReq.device];
-
-        if (adjReq.size > tempMem->getSizeAvailable()) {
-            // We need to allocate this ourselves
-            AllocRequest newReq = adjReq;
-            newReq.space = MemorySpace::Device;
-            newReq.type = AllocType::TemporaryMemoryOverflow;
-
-            if (allocLogging_) {
-                std::cout
-                        << "StandardGpuResources: alloc fail "
-                        << adjReq.toString()
-                        << " (no temp space); retrying as MemorySpace::Device\n";
-            }
-
-            return allocMemory(newReq);
-        }
-
-        // Otherwise, we can handle this locally
-        p = tempMemory_[adjReq.device]->allocMemory(adjReq.stream, adjReq.size);
-
-    } else if (adjReq.space == MemorySpace::Device) {
-        auto err = cudaMalloc(&p, adjReq.size);
-
-        // Throw if we fail to allocate
-        if (err != cudaSuccess) {
-            // FIXME: as of CUDA 11, a memory allocation error appears to be
-            // presented via cudaGetLastError as well, and needs to be cleared.
-            // Just call the function to clear it
-            cudaGetLastError();
-
-            std::stringstream ss;
-            ss << "StandardGpuResources: alloc fail " << adjReq.toString()
-               << " (cudaMalloc error " << cudaGetErrorString(err) << " ["
-               << (int)err << "])\n";
-            auto str = ss.str();
-
-            if (allocLogging_) {
-                std::cout << str;
-            }
-
-            FAISS_THROW_IF_NOT_FMT(err == cudaSuccess, "%s", str.c_str());
-        }
-    } else if (adjReq.space == MemorySpace::Unified) {
-        auto err = cudaMallocManaged(&p, adjReq.size);
-
-        if (err != cudaSuccess) {
-            // FIXME: as of CUDA 11, a memory allocation error appears to be
-            // presented via cudaGetLastError as well, and needs to be cleared.
-            // Just call the function to clear it
-            cudaGetLastError();
-
-            std::stringstream ss;
-            ss << "StandardGpuResources: alloc fail " << adjReq.toString()
-               << " failed (cudaMallocManaged error " << cudaGetErrorString(err)
-               << " [" << (int)err << "])\n";
-            auto str = ss.str();
-
-            if (allocLogging_) {
-                std::cout << str;
-            }
-
-            FAISS_THROW_IF_NOT_FMT(err == cudaSuccess, "%s", str.c_str());
-        }
-    } else {
-        FAISS_ASSERT_FMT(false, "unknown MemorySpace %d", (int)adjReq.space);
-    }
-
-    if (allocLogging_) {
-        std::cout << "StandardGpuResources: alloc ok " << adjReq.toString()
-                  << " ptr 0x" << p << "\n";
-    }
-
-    allocs_[adjReq.device][p] = adjReq;
-
-    return p;
-}
-
-void StandardGpuResourcesImpl::deallocMemory(int device, void* p) {
-    FAISS_ASSERT(isInitialized(device));
-
-    if (!p) {
-        return;
-    }
-
-    auto& a = allocs_[device];
-    auto it = a.find(p);
-    FAISS_ASSERT(it != a.end());
-
-    auto& req = it->second;
-
-    if (allocLogging_) {
-        std::cout << "StandardGpuResources: dealloc " << req.toString() << "\n";
-    }
-
-    if (req.space == MemorySpace::Temporary) {
-        tempMemory_[device]->deallocMemory(device, req.stream, req.size, p);
-
-    } else if (
-            req.space == MemorySpace::Device ||
-            req.space == MemorySpace::Unified) {
-        auto err = cudaFree(p);
-        FAISS_ASSERT_FMT(
-                err == cudaSuccess,
-                "Failed to cudaFree pointer %p (error %d %s)",
-                p,
-                (int)err,
-                cudaGetErrorString(err));
-
-    } else {
-        FAISS_ASSERT_FMT(false, "unknown MemorySpace %d", (int)req.space);
-    }
-
-    a.erase(it);
-}
-
-size_t StandardGpuResourcesImpl::getTempMemoryAvailable(int device) const {
-    FAISS_ASSERT(isInitialized(device));
-
-    auto it = tempMemory_.find(device);
-    FAISS_ASSERT(it != tempMemory_.end());
-
-    return it->second->getSizeAvailable();
-}
-
-std::map<int, std::map<std::string, std::pair<int, size_t>>>
-StandardGpuResourcesImpl::getMemoryInfo() const {
-    using AT = std::map<std::string, std::pair<int, size_t>>;
-
-    std::map<int, AT> out;
-
-    for (auto& entry : allocs_) {
-        AT outDevice;
-
-        for (auto& a : entry.second) {
-            auto& v = outDevice[allocTypeToString(a.second.type)];
-            v.first++;
-            v.second += a.second.size;
-        }
-
-        out[entry.first] = std::move(outDevice);
-    }
-
-    return out;
-}
-
-//
-// StandardGpuResources
-//
-
-StandardGpuResources::StandardGpuResources()
-        : res_(new StandardGpuResourcesImpl) {}
-
-StandardGpuResources::~StandardGpuResources() {}
-
-std::shared_ptr<GpuResources> StandardGpuResources::getResources() {
-    return res_;
-}
-
-void StandardGpuResources::noTempMemory() {
-    res_->noTempMemory();
-}
-
-void StandardGpuResources::setTempMemory(size_t size) {
-    res_->setTempMemory(size);
-}
-
-void StandardGpuResources::setPinnedMemory(size_t size) {
-    res_->setPinnedMemory(size);
-}
-
-void StandardGpuResources::setDefaultStream(int device, cudaStream_t stream) {
-    res_->setDefaultStream(device, stream);
-}
-
-void StandardGpuResources::revertDefaultStream(int device) {
-    res_->revertDefaultStream(device);
-}
-
-void StandardGpuResources::setDefaultNullStreamAllDevices() {
-    res_->setDefaultNullStreamAllDevices();
-}
-
-std::map<int, std::map<std::string, std::pair<int, size_t>>>
-StandardGpuResources::getMemoryInfo() const {
-    return res_->getMemoryInfo();
-}
-
-cudaStream_t StandardGpuResources::getDefaultStream(int device) {
-    return res_->getDefaultStream(device);
-}
-
-size_t StandardGpuResources::getTempMemoryAvailable(int device) const {
-    return res_->getTempMemoryAvailable(device);
-}
-
-void StandardGpuResources::syncDefaultStreamCurrentDevice() {
-    res_->syncDefaultStreamCurrentDevice();
-}
-
-void StandardGpuResources::setLogMemoryAllocations(bool enable) {
-    res_->setLogMemoryAllocations(enable);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/StandardGpuResources.h b/faiss/gpu_cuda/StandardGpuResources.h
deleted file mode 100644
index d1edfb66739977d0cb8e862dda4d2147e28f6823..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/StandardGpuResources.h
+++ /dev/null
@@ -1,205 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StackDeviceMemory.h>
-#include <functional>
-#include <map>
-#include <unordered_map>
-#include <vector>
-
-namespace faiss {
-namespace gpu {
-
-/// Standard implementation of the GpuResources object that provides for a
-/// temporary memory manager
-class StandardGpuResourcesImpl : public GpuResources {
-   public:
-    StandardGpuResourcesImpl();
-
-    ~StandardGpuResourcesImpl() override;
-
-    /// Disable allocation of temporary memory; all temporary memory
-    /// requests will call cudaMalloc / cudaFree at the point of use
-    void noTempMemory();
-
-    /// Specify that we wish to use a certain fixed size of memory on
-    /// all devices as temporary memory. This is the upper bound for the GPU
-    /// memory that we will reserve. We will never go above 1.5 GiB on any GPU;
-    /// smaller GPUs (with <= 4 GiB or <= 8 GiB) will use less memory than that.
-    /// To avoid any temporary memory allocation, pass 0.
-    void setTempMemory(size_t size);
-
-    /// Set amount of pinned memory to allocate, for async GPU <-> CPU
-    /// transfers
-    void setPinnedMemory(size_t size);
-
-    /// Called to change the stream for work ordering. We do not own `stream`;
-    /// i.e., it will not be destroyed when the GpuResources object gets cleaned
-    /// up.
-    /// We are guaranteed that all Faiss GPU work is ordered with respect to
-    /// this stream upon exit from an index or other Faiss GPU call.
-    void setDefaultStream(int device, cudaStream_t stream) override;
-
-    /// Revert the default stream to the original stream managed by this
-    /// resources object, in case someone called `setDefaultStream`.
-    void revertDefaultStream(int device);
-
-    /// Returns the stream for the given device on which all Faiss GPU work is
-    /// ordered.
-    /// We are guaranteed that all Faiss GPU work is ordered with respect to
-    /// this stream upon exit from an index or other Faiss GPU call.
-    cudaStream_t getDefaultStream(int device) override;
-
-    /// Called to change the work ordering streams to the null stream
-    /// for all devices
-    void setDefaultNullStreamAllDevices();
-
-    /// If enabled, will print every GPU memory allocation and deallocation to
-    /// standard output
-    void setLogMemoryAllocations(bool enable);
-
-   public:
-    /// Internal system calls
-
-    /// Initialize resources for this device
-    void initializeForDevice(int device) override;
-
-    cublasHandle_t getBlasHandle(int device) override;
-
-    std::vector<cudaStream_t> getAlternateStreams(int device) override;
-
-    /// Allocate non-temporary GPU memory
-    void* allocMemory(const AllocRequest& req) override;
-
-    /// Returns a previous allocation
-    void deallocMemory(int device, void* in) override;
-
-    size_t getTempMemoryAvailable(int device) const override;
-
-    /// Export a description of memory used for Python
-    std::map<int, std::map<std::string, std::pair<int, size_t>>> getMemoryInfo()
-            const;
-
-    std::pair<void*, size_t> getPinnedMemory() override;
-
-    cudaStream_t getAsyncCopyStream(int device) override;
-
-   private:
-    /// Have GPU resources been initialized for this device yet?
-    bool isInitialized(int device) const;
-
-    /// Adjust the default temporary memory allocation based on the total GPU
-    /// memory size
-    static size_t getDefaultTempMemForGPU(int device, size_t requested);
-
-   private:
-    /// Set of currently outstanding memory allocations per device
-    /// device -> (alloc request, allocated ptr)
-    std::unordered_map<int, std::unordered_map<void*, AllocRequest>> allocs_;
-
-    /// Temporary memory provider, per each device
-    std::unordered_map<int, std::unique_ptr<StackDeviceMemory>> tempMemory_;
-
-    /// Our default stream that work is ordered on, one per each device
-    std::unordered_map<int, cudaStream_t> defaultStreams_;
-
-    /// This contains particular streams as set by the user for
-    /// ordering, if any
-    std::unordered_map<int, cudaStream_t> userDefaultStreams_;
-
-    /// Other streams we can use, per each device
-    std::unordered_map<int, std::vector<cudaStream_t>> alternateStreams_;
-
-    /// Async copy stream to use for GPU <-> CPU pinned memory copies
-    std::unordered_map<int, cudaStream_t> asyncCopyStreams_;
-
-    /// cuBLAS handle for each device
-    std::unordered_map<int, cublasHandle_t> blasHandles_;
-
-    /// Pinned memory allocation for use with this GPU
-    void* pinnedMemAlloc_;
-    size_t pinnedMemAllocSize_;
-
-    /// Another option is to use a specified amount of memory on all
-    /// devices
-    size_t tempMemSize_;
-
-    /// Amount of pinned memory we should allocate
-    size_t pinnedMemSize_;
-
-    /// Whether or not we log every GPU memory allocation and deallocation
-    bool allocLogging_;
-};
-
-/// Default implementation of GpuResources that allocates a cuBLAS
-/// stream and 2 streams for use, as well as temporary memory.
-/// Internally, the Faiss GPU code uses the instance managed by getResources,
-/// but this is the user-facing object that is internally reference counted.
-class StandardGpuResources : public GpuResourcesProvider {
-   public:
-    StandardGpuResources();
-    ~StandardGpuResources() override;
-
-    std::shared_ptr<GpuResources> getResources() override;
-
-    /// Disable allocation of temporary memory; all temporary memory
-    /// requests will call cudaMalloc / cudaFree at the point of use
-    void noTempMemory();
-
-    /// Specify that we wish to use a certain fixed size of memory on
-    /// all devices as temporary memory. This is the upper bound for the GPU
-    /// memory that we will reserve. We will never go above 1.5 GiB on any GPU;
-    /// smaller GPUs (with <= 4 GiB or <= 8 GiB) will use less memory than that.
-    /// To avoid any temporary memory allocation, pass 0.
-    void setTempMemory(size_t size);
-
-    /// Set amount of pinned memory to allocate, for async GPU <-> CPU
-    /// transfers
-    void setPinnedMemory(size_t size);
-
-    /// Called to change the stream for work ordering. We do not own `stream`;
-    /// i.e., it will not be destroyed when the GpuResources object gets cleaned
-    /// up.
-    /// We are guaranteed that all Faiss GPU work is ordered with respect to
-    /// this stream upon exit from an index or other Faiss GPU call.
-    void setDefaultStream(int device, cudaStream_t stream);
-
-    /// Revert the default stream to the original stream managed by this
-    /// resources object, in case someone called `setDefaultStream`.
-    void revertDefaultStream(int device);
-
-    /// Called to change the work ordering streams to the null stream
-    /// for all devices
-    void setDefaultNullStreamAllDevices();
-
-    /// Export a description of memory used for Python
-    std::map<int, std::map<std::string, std::pair<int, size_t>>> getMemoryInfo()
-            const;
-
-    /// Returns the current default stream
-    cudaStream_t getDefaultStream(int device);
-
-    /// Returns the current amount of temp memory available
-    size_t getTempMemoryAvailable(int device) const;
-
-    /// Synchronize our default stream with the CPU
-    void syncDefaultStreamCurrentDevice();
-
-    /// If enabled, will print every GPU memory allocation and deallocation to
-    /// standard output
-    void setLogMemoryAllocations(bool enable);
-
-   private:
-    std::shared_ptr<StandardGpuResourcesImpl> res_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/BinaryDistance.cu b/faiss/gpu_cuda/impl/BinaryDistance.cu
deleted file mode 100644
index c3d06ebdfee8b4cd67071b79d8015f94eb9de9bb..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/BinaryDistance.cu
+++ /dev/null
@@ -1,316 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/Select.cuh>
-
-namespace faiss {
-namespace gpu {
-
-// Number of warps that the kernel is instantiated with
-constexpr int kWarps = 8;
-constexpr int kLanes = kWarpSize;
-
-constexpr int kMaxDistance = std::numeric_limits<int>::max();
-
-// Performs a binary matrix multiplication, returning the lowest k results in
-// `vecs` for each `query` in terms of Hamming distance (a fused kernel)
-// Each warp calculates distance for a single query
-template <int NumWarpQ, int NumThreadQ, typename BinaryType>
-__launch_bounds__(kWarps* kLanes) __global__ void binaryDistanceAnySize(
-        const Tensor<BinaryType, 2, true> vecs,
-        const Tensor<BinaryType, 2, true> query,
-        Tensor<int, 2, true> outK,
-        Tensor<int, 2, true> outV,
-        int k) {
-    // A matrix tile (query, k)
-    __shared__ BinaryType queryTile[kWarps][kLanes + 1]; // avoid bank conflict
-
-    // B matrix tile (vec, k)
-    __shared__ BinaryType vecTile[kLanes][kLanes + 1]; // avoid bank conflict
-
-    WarpSelect<
-            int,
-            int,
-            false,
-            Comparator<int>,
-            NumWarpQ,
-            NumThreadQ,
-            kWarps * kLanes>
-            heap(kMaxDistance, -1, k);
-
-    int warpId = threadIdx.y;
-    int laneId = threadIdx.x;
-
-    // Each warp handles a single query
-    int warpQuery = blockIdx.x * kWarps + warpId;
-    bool queryInBounds = warpQuery < query.getSize(0);
-
-    // Each warp loops through the entire chunk of vectors
-    for (int blockVec = 0; blockVec < vecs.getSize(0); blockVec += kLanes) {
-        int threadDistance = 0;
-
-        // Reduction dimension
-        for (int blockK = 0; blockK < vecs.getSize(1); blockK += kLanes) {
-            int laneK = blockK + laneId;
-            bool kInBounds = laneK < vecs.getSize(1);
-
-            queryTile[warpId][laneId] =
-                    queryInBounds && kInBounds ? query[warpQuery][laneK] : 0;
-
-            // kWarps warps are responsible for loading 32 vecs
-#pragma unroll
-            for (int i = 0; i < kLanes / kWarps; ++i) {
-                int warpVec = i * kWarps + warpId;
-                int vec = blockVec + warpVec;
-                bool vecInBounds = vec < vecs.getSize(0);
-
-                vecTile[warpVec][laneId] =
-                        vecInBounds && kInBounds ? vecs[vec][laneK] : 0;
-            }
-
-            __syncthreads();
-
-            // Compare distances
-#pragma unroll
-            for (int i = 0; i < kLanes; ++i) {
-                threadDistance +=
-                        __popc(queryTile[warpId][i] ^ vecTile[laneId][i]);
-            }
-
-            __syncthreads();
-        }
-
-        // Lanes within a warp are different vec results against the same query
-        // Only submit distances which represent real (query, vec) pairs
-        bool valInBounds =
-                queryInBounds && (blockVec + laneId < vecs.getSize(0));
-        threadDistance = valInBounds ? threadDistance : kMaxDistance;
-        int id = valInBounds ? blockVec + laneId : -1;
-
-        heap.add(threadDistance, id);
-    }
-
-    heap.reduce();
-
-    if (warpQuery < query.getSize(0)) {
-        heap.writeOut(outK[warpQuery].data(), outV[warpQuery].data(), k);
-    }
-}
-
-// Version of the kernel that avoids a loop over the reduction dimension, and
-// thus avoids reloading the query vectors
-template <
-        int NumWarpQ,
-        int NumThreadQ,
-        typename BinaryType,
-        int ReductionLimit = kLanes>
-__global__ void __launch_bounds__(kWarps* kLanes) binaryDistanceLimitSize(
-        const Tensor<BinaryType, 2, true> vecs,
-        const Tensor<BinaryType, 2, true> query,
-        Tensor<int, 2, true> outK,
-        Tensor<int, 2, true> outV,
-        int k) {
-    // A matrix tile (query, k)
-    __shared__ BinaryType queryTile[kWarps][kLanes + 1]; // avoid bank conflict
-
-    // B matrix tile (vec, k)
-    __shared__ BinaryType vecTile[kLanes][kLanes + 1]; // avoid bank conflict
-
-    WarpSelect<
-            int,
-            int,
-            false,
-            Comparator<int>,
-            NumWarpQ,
-            NumThreadQ,
-            kWarps * kLanes>
-            heap(kMaxDistance, -1, k);
-
-    int warpId = threadIdx.y;
-    int laneId = threadIdx.x;
-
-    // Each warp handles a single query
-    int laneK = laneId;
-    int warpQuery = blockIdx.x * kWarps + warpId;
-    bool kInBounds = laneK < vecs.getSize(1);
-    bool queryInBounds = warpQuery < query.getSize(0);
-
-    queryTile[warpId][laneId] =
-            queryInBounds && kInBounds ? query[warpQuery][laneK] : 0;
-
-    // Each warp loops through the entire chunk of vectors
-    for (int blockVec = 0; blockVec < vecs.getSize(0); blockVec += kLanes) {
-        int threadDistance = 0;
-
-        // kWarps warps are responsible for loading 32 vecs
-#pragma unroll
-        for (int i = 0; i < kLanes / kWarps; ++i) {
-            int warpVec = i * kWarps + warpId;
-            int vec = blockVec + warpVec;
-            bool vecInBounds = vec < vecs.getSize(0);
-
-            vecTile[warpVec][laneId] =
-                    vecInBounds && kInBounds ? vecs[vec][laneK] : 0;
-        }
-
-        __syncthreads();
-
-        // Compare distances
-#pragma unroll
-        for (int i = 0; i < ReductionLimit; ++i) {
-            threadDistance += __popc(queryTile[warpId][i] ^ vecTile[laneId][i]);
-        }
-
-        __syncthreads();
-
-        // Lanes within a warp are different vec results against the same query
-        // Only submit distances which represent real (query, vec) pairs
-        bool valInBounds =
-                queryInBounds && (blockVec + laneId < vecs.getSize(0));
-        threadDistance = valInBounds ? threadDistance : kMaxDistance;
-        int id = valInBounds ? blockVec + laneId : -1;
-
-        heap.add(threadDistance, id);
-    }
-
-    heap.reduce();
-
-    if (warpQuery < query.getSize(0)) {
-        heap.writeOut(outK[warpQuery].data(), outV[warpQuery].data(), k);
-    }
-}
-
-template <typename BinaryType>
-void runBinaryDistanceAnySize(
-        Tensor<BinaryType, 2, true>& vecs,
-        Tensor<BinaryType, 2, true>& query,
-        Tensor<int, 2, true>& outK,
-        Tensor<int, 2, true>& outV,
-        int k,
-        cudaStream_t stream) {
-    dim3 grid(utils::divUp(query.getSize(0), kWarps));
-    dim3 block(kLanes, kWarps);
-
-    if (k == 1) {
-        binaryDistanceAnySize<1, 1, BinaryType>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    } else if (k <= 32) {
-        binaryDistanceAnySize<32, 2, BinaryType>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    } else if (k <= 64) {
-        binaryDistanceAnySize<64, 3, BinaryType>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    } else if (k <= 128) {
-        binaryDistanceAnySize<128, 3, BinaryType>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    } else if (k <= 256) {
-        binaryDistanceAnySize<256, 4, BinaryType>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    } else if (k <= 512) {
-        binaryDistanceAnySize<512, 8, BinaryType>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    } else if (k <= 1024) {
-        binaryDistanceAnySize<1024, 8, BinaryType>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    }
-#if GPU_MAX_SELECTION_K >= 2048
-    else if (k <= 2048) {
-        binaryDistanceAnySize<2048, 8, BinaryType>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    }
-#endif
-}
-
-template <typename BinaryType, int ReductionLimit>
-void runBinaryDistanceLimitSize(
-        Tensor<BinaryType, 2, true>& vecs,
-        Tensor<BinaryType, 2, true>& query,
-        Tensor<int, 2, true>& outK,
-        Tensor<int, 2, true>& outV,
-        int k,
-        cudaStream_t stream) {
-    dim3 grid(utils::divUp(query.getSize(0), kWarps));
-    dim3 block(kLanes, kWarps);
-
-    if (k == 1) {
-        binaryDistanceLimitSize<1, 1, BinaryType, ReductionLimit>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    } else if (k <= 32) {
-        binaryDistanceLimitSize<32, 2, BinaryType, ReductionLimit>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    } else if (k <= 64) {
-        binaryDistanceLimitSize<64, 3, BinaryType, ReductionLimit>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    } else if (k <= 128) {
-        binaryDistanceLimitSize<128, 3, BinaryType, ReductionLimit>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    } else if (k <= 256) {
-        binaryDistanceLimitSize<256, 4, BinaryType, ReductionLimit>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    } else if (k <= 512) {
-        binaryDistanceLimitSize<512, 8, BinaryType, ReductionLimit>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    } else if (k <= 1024) {
-        binaryDistanceLimitSize<1024, 8, BinaryType, ReductionLimit>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    }
-#if GPU_MAX_SELECTION_K >= 2048
-    else if (k <= 2048) {
-        binaryDistanceLimitSize<2048, 8, BinaryType, ReductionLimit>
-                <<<grid, block, 0, stream>>>(vecs, query, outK, outV, k);
-    }
-#endif
-}
-
-void runBinaryDistance(
-        Tensor<unsigned char, 2, true>& vecs,
-        Tensor<unsigned char, 2, true>& query,
-        Tensor<int, 2, true>& outK,
-        Tensor<int, 2, true>& outV,
-        int k,
-        cudaStream_t stream) {
-    FAISS_ASSERT(k <= GPU_MAX_SELECTION_K);
-    FAISS_ASSERT(vecs.getSize(1) == query.getSize(1));
-
-    FAISS_ASSERT(outK.getSize(1) == k);
-    FAISS_ASSERT(outV.getSize(1) == k);
-
-    // For the optimized uint32 kernel, we handle 32 * 8 = 256 max dims
-    constexpr int kReductionLimit32 = 8;
-
-    // For the optimized uint8 kernel, we handle 8 * 16 = 128 max dims
-    constexpr int kReductionLimit8 = 16;
-
-    // All other cases (large or small) go through the general kernel
-
-    if (vecs.getSize(1) % sizeof(unsigned int) == 0 &&
-        (vecs.getSize(1) / sizeof(unsigned int)) <= kReductionLimit32) {
-        auto vecs32 = vecs.castResize<unsigned int>();
-        auto query32 = query.castResize<unsigned int>();
-
-        // Optimize for vectors with dimensions a multiple of 32 that are less
-        // than 32 * kReductionLimit (256) dimensions in size
-        runBinaryDistanceLimitSize<unsigned int, kReductionLimit32>(
-                vecs32, query32, outK, outV, k, stream);
-
-    } else if (vecs.getSize(1) <= kReductionLimit8) {
-        // Optimize for vectors with dimensions a multiple of 32 that are less
-        // than 32 * kReductionLimit (256) dimensions in size
-        runBinaryDistanceLimitSize<unsigned char, kReductionLimit8>(
-                vecs, query, outK, outV, k, stream);
-    } else {
-        // Arbitrary size kernel
-        runBinaryDistanceAnySize<unsigned char>(
-                vecs, query, outK, outV, k, stream);
-    }
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/BinaryDistance.cuh b/faiss/gpu_cuda/impl/BinaryDistance.cuh
deleted file mode 100644
index 2174b481633af18cf10f7422abb7e0af83bb3d66..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/BinaryDistance.cuh
+++ /dev/null
@@ -1,24 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-// Performs brute-force k-NN comparison between `vecs` and `query`, where they
-// are encoded as binary vectors
-void runBinaryDistance(
-        Tensor<unsigned char, 2, true>& vecs,
-        Tensor<unsigned char, 2, true>& query,
-        Tensor<int, 2, true>& outK,
-        Tensor<int, 2, true>& outV,
-        int k,
-        cudaStream_t stream);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/BinaryFlatIndex.cu b/faiss/gpu_cuda/impl/BinaryFlatIndex.cu
deleted file mode 100644
index 584707c80506720268aeee94a6048633d19f408a..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/BinaryFlatIndex.cu
+++ /dev/null
@@ -1,84 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/impl/BinaryDistance.cuh>
-#include <faiss/gpu/impl/BinaryFlatIndex.cuh>
-
-namespace faiss {
-namespace gpu {
-
-BinaryFlatIndex::BinaryFlatIndex(GpuResources* res, int dim, MemorySpace space)
-        : resources_(res),
-          dim_(dim),
-          num_(0),
-          rawData_(
-                  res,
-                  makeSpaceAlloc(
-                          AllocType::FlatData,
-                          space,
-                          res->getDefaultStreamCurrentDevice())) {
-    FAISS_ASSERT(dim % 8 == 0);
-}
-
-/// Returns the number of vectors we contain
-int BinaryFlatIndex::getSize() const {
-    return vectors_.getSize(0);
-}
-
-int BinaryFlatIndex::getDim() const {
-    return vectors_.getSize(1) * 8;
-}
-
-void BinaryFlatIndex::reserve(size_t numVecs, cudaStream_t stream) {
-    rawData_.reserve(numVecs * (dim_ / 8) * sizeof(unsigned int), stream);
-}
-
-Tensor<unsigned char, 2, true>& BinaryFlatIndex::getVectorsRef() {
-    return vectors_;
-}
-
-void BinaryFlatIndex::query(
-        Tensor<unsigned char, 2, true>& input,
-        int k,
-        Tensor<int, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices) {
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    runBinaryDistance(vectors_, input, outDistances, outIndices, k, stream);
-}
-
-void BinaryFlatIndex::add(
-        const unsigned char* data,
-        int numVecs,
-        cudaStream_t stream) {
-    if (numVecs == 0) {
-        return;
-    }
-
-    rawData_.append(
-            (char*)data,
-            (size_t)(dim_ / 8) * numVecs * sizeof(unsigned char),
-            stream,
-            true /* reserve exactly */);
-
-    num_ += numVecs;
-
-    DeviceTensor<unsigned char, 2, true> vectors(
-            (unsigned char*)rawData_.data(), {(int)num_, (dim_ / 8)});
-    vectors_ = std::move(vectors);
-}
-
-void BinaryFlatIndex::reset() {
-    rawData_.clear();
-    vectors_ = DeviceTensor<unsigned char, 2, true>();
-    num_ = 0;
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/BinaryFlatIndex.cuh b/faiss/gpu_cuda/impl/BinaryFlatIndex.cuh
deleted file mode 100644
index ddef54efdfd767a4ba9c7a6498635b5d1c7262a6..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/BinaryFlatIndex.cuh
+++ /dev/null
@@ -1,65 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/DeviceVector.cuh>
-
-namespace faiss {
-namespace gpu {
-
-class GpuResources;
-
-/// Holder of GPU resources for a particular flat index
-class BinaryFlatIndex {
-   public:
-    BinaryFlatIndex(GpuResources* res, int dim, MemorySpace space);
-
-    /// Returns the number of vectors we contain
-    int getSize() const;
-
-    int getDim() const;
-
-    /// Reserve storage that can contain at least this many vectors
-    void reserve(size_t numVecs, cudaStream_t stream);
-
-    /// Returns a reference to our vectors currently in use
-    Tensor<unsigned char, 2, true>& getVectorsRef();
-
-    void query(
-            Tensor<unsigned char, 2, true>& vecs,
-            int k,
-            Tensor<int, 2, true>& outDistances,
-            Tensor<int, 2, true>& outIndices);
-
-    /// Add vectors to ourselves; the pointer passed can be on the host
-    /// or the device
-    void add(const unsigned char* data, int numVecs, cudaStream_t stream);
-
-    /// Free all storage
-    void reset();
-
-   private:
-    /// Collection of GPU resources that we use
-    GpuResources* resources_;
-
-    /// Dimensionality of our vectors
-    const int dim_;
-
-    /// How many vectors we have
-    int num_;
-
-    /// The underlying expandable storage
-    DeviceVector<char> rawData_;
-
-    /// Vectors currently in rawData_
-    DeviceTensor<unsigned char, 2, true> vectors_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/BroadcastSum.cu b/faiss/gpu_cuda/impl/BroadcastSum.cu
deleted file mode 100644
index 14ddf0cea63540ef58c1ed96643d3dfe411b3aa0..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/BroadcastSum.cu
+++ /dev/null
@@ -1,369 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/impl/FaissAssert.h>
-#include <algorithm>
-
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/gpu/utils/MathOperators.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-template <typename T, int kRowsPerBlock, int kRowUnroll, int kColLoad>
-__global__ void sumAlongColumns(
-        Tensor<T, 1, true> input,
-        Tensor<T, 2, true> output) {
-    static_assert(kRowsPerBlock % kRowUnroll == 0, "must fit rows");
-
-    // blockIdx.x: which chunk of rows we are responsible for updating
-    // blockIdx.y: which chunk of columns we are responsible for
-    // updating
-    int rowStart = blockIdx.x * kRowsPerBlock;
-    int rowEnd = rowStart + kRowsPerBlock;
-    int colStart = blockIdx.y * blockDim.x * kColLoad;
-
-    // FIXME: if we have exact multiples, don't need this
-    bool endRow = (blockIdx.x == gridDim.x - 1);
-    bool endCol = (blockIdx.y == gridDim.y - 1);
-
-    if (endRow) {
-        if (output.getSize(0) % kRowsPerBlock == 0) {
-            endRow = false;
-        }
-    }
-
-    if (endCol) {
-        for (int col = colStart + threadIdx.x; col < input.getSize(0);
-             col += blockDim.x) {
-            T val = input[col];
-
-            if (endRow) {
-                for (int row = rowStart; row < output.getSize(0); ++row) {
-                    T out = output[row][col];
-                    out = Math<T>::add(out, val);
-                    output[row][col] = out;
-                }
-            } else {
-                T rows[kRowUnroll];
-
-                for (int row = rowStart; row < rowEnd; row += kRowUnroll) {
-#pragma unroll
-                    for (int i = 0; i < kRowUnroll; ++i) {
-                        rows[i] = output[row + i][col];
-                    }
-
-#pragma unroll
-                    for (int i = 0; i < kRowUnroll; ++i) {
-                        rows[i] = Math<T>::add(rows[i], val);
-                    }
-
-#pragma unroll
-                    for (int i = 0; i < kRowUnroll; ++i) {
-                        output[row + i][col] = rows[i];
-                    }
-                }
-            }
-        }
-    } else {
-        int col = colStart + threadIdx.x;
-
-        T val[kColLoad];
-
-#pragma unroll
-        for (int i = 0; i < kColLoad; ++i) {
-            val[i] = input[col + i * blockDim.x];
-        }
-
-        if (endRow) {
-            for (int row = rowStart; row < output.getSize(0); ++row) {
-#pragma unroll
-                for (int i = 0; i < kColLoad; ++i) {
-                    T out = output[row][col + i * blockDim.x];
-                    out = Math<T>::add(out, val[i]);
-                    output[row][col + i * blockDim.x] = out;
-                }
-            }
-        } else {
-            T rows[kRowUnroll * kColLoad];
-
-            for (int row = rowStart; row < rowEnd; row += kRowUnroll) {
-#pragma unroll
-                for (int i = 0; i < kRowUnroll; ++i) {
-#pragma unroll
-                    for (int j = 0; j < kColLoad; ++j) {
-                        rows[i * kColLoad + j] =
-                                output[row + i][col + j * blockDim.x];
-                    }
-                }
-
-#pragma unroll
-                for (int i = 0; i < kRowUnroll; ++i) {
-#pragma unroll
-                    for (int j = 0; j < kColLoad; ++j) {
-                        rows[i * kColLoad + j] =
-                                Math<T>::add(rows[i * kColLoad + j], val[j]);
-                    }
-                }
-
-#pragma unroll
-                for (int i = 0; i < kRowUnroll; ++i) {
-#pragma unroll
-                    for (int j = 0; j < kColLoad; ++j) {
-                        output[row + i][col + j * blockDim.x] =
-                                rows[i * kColLoad + j];
-                    }
-                }
-            }
-        }
-    }
-}
-
-template <typename T, int kRowsPerBlock, int kRowUnroll, int kColLoad>
-__global__ void assignAlongColumns(
-        Tensor<T, 1, true> input,
-        Tensor<T, 2, true> output) {
-    static_assert(kRowsPerBlock % kRowUnroll == 0, "must fit rows");
-
-    // blockIdx.x: which chunk of rows we are responsible for updating
-    // blockIdx.y: which chunk of columns we are responsible for
-    // updating
-    int rowStart = blockIdx.x * kRowsPerBlock;
-    int rowEnd = rowStart + kRowsPerBlock;
-    int colStart = blockIdx.y * blockDim.x * kColLoad;
-
-    // FIXME: if we have exact multiples, don't need this
-    bool endRow = (blockIdx.x == gridDim.x - 1);
-    bool endCol = (blockIdx.y == gridDim.y - 1);
-
-    if (endRow) {
-        if (output.getSize(0) % kRowsPerBlock == 0) {
-            endRow = false;
-        }
-    }
-
-    if (endCol) {
-        for (int col = colStart + threadIdx.x; col < input.getSize(0);
-             col += blockDim.x) {
-            T val = input[col];
-
-            if (endRow) {
-                for (int row = rowStart; row < output.getSize(0); ++row) {
-                    output[row][col] = val;
-                }
-            } else {
-                for (int row = rowStart; row < rowEnd; row += kRowUnroll) {
-#pragma unroll
-                    for (int i = 0; i < kRowUnroll; ++i) {
-                        output[row + i][col] = val;
-                    }
-                }
-            }
-        }
-    } else {
-        int col = colStart + threadIdx.x;
-
-        T val[kColLoad];
-
-#pragma unroll
-        for (int i = 0; i < kColLoad; ++i) {
-            val[i] = input[col + i * blockDim.x];
-        }
-
-        if (endRow) {
-            for (int row = rowStart; row < output.getSize(0); ++row) {
-#pragma unroll
-                for (int i = 0; i < kColLoad; ++i) {
-                    output[row][col + i * blockDim.x] = val[i];
-                }
-            }
-        } else {
-            for (int row = rowStart; row < rowEnd; row += kRowUnroll) {
-#pragma unroll
-                for (int i = 0; i < kRowUnroll; ++i) {
-#pragma unroll
-                    for (int j = 0; j < kColLoad; ++j) {
-                        output[row + i][col + j * blockDim.x] = val[j];
-                    }
-                }
-            }
-        }
-    }
-}
-
-template <typename T, bool ZeroClamp>
-__global__ void sumAlongRows(
-        Tensor<T, 1, true> input,
-        Tensor<T, 2, true> output) {
-    __shared__ T sval;
-
-    int row = blockIdx.x;
-
-    if (threadIdx.x == 0) {
-        sval = input[row];
-    }
-
-    __syncthreads();
-
-    T val = sval;
-
-    // FIXME: speed up
-    for (int i = threadIdx.x; i < output.getSize(1); i += blockDim.x) {
-        T out = output[row][i];
-        out = Math<T>::add(out, val);
-        if (ZeroClamp) {
-            out = Math<T>::lt(out, Math<T>::zero()) ? Math<T>::zero() : out;
-        }
-
-        output[row][i] = out;
-    }
-}
-
-template <typename T, typename TVec>
-void runSumAlongColumns(
-        Tensor<T, 1, true>& input,
-        Tensor<T, 2, true>& output,
-        cudaStream_t stream) {
-    FAISS_ASSERT(input.getSize(0) == output.getSize(1));
-
-    int threadsPerBlock = 256;
-    constexpr int kRowUnroll = 4;
-    constexpr int kRowsPerBlock = kRowUnroll * 4;
-    constexpr int kColLoad = 4;
-
-    auto block = dim3(threadsPerBlock);
-
-    if (input.template canCastResize<TVec>() &&
-        output.template canCastResize<TVec>()) {
-        auto inputV = input.template castResize<TVec>();
-        auto outputV = output.template castResize<TVec>();
-
-        auto grid = dim3(
-                utils::divUp(outputV.getSize(0), kRowsPerBlock),
-                utils::divUp(outputV.getSize(1), threadsPerBlock * kColLoad));
-
-        sumAlongColumns<TVec, kRowsPerBlock, kRowUnroll, kColLoad>
-                <<<grid, block, 0, stream>>>(inputV, outputV);
-    } else {
-        auto grid = dim3(
-                utils::divUp(output.getSize(0), kRowsPerBlock),
-                utils::divUp(output.getSize(1), threadsPerBlock * kColLoad));
-
-        sumAlongColumns<T, kRowsPerBlock, kRowUnroll, kColLoad>
-                <<<grid, block, 0, stream>>>(input, output);
-    }
-
-    CUDA_TEST_ERROR();
-}
-
-void runSumAlongColumns(
-        Tensor<float, 1, true>& input,
-        Tensor<float, 2, true>& output,
-        cudaStream_t stream) {
-    runSumAlongColumns<float, float4>(input, output, stream);
-}
-
-void runSumAlongColumns(
-        Tensor<half, 1, true>& input,
-        Tensor<half, 2, true>& output,
-        cudaStream_t stream) {
-    runSumAlongColumns<half, half2>(input, output, stream);
-}
-
-template <typename T, typename TVec>
-void runAssignAlongColumns(
-        Tensor<T, 1, true>& input,
-        Tensor<T, 2, true>& output,
-        cudaStream_t stream) {
-    FAISS_ASSERT(input.getSize(0) == output.getSize(1));
-
-    int threadsPerBlock = 256;
-    constexpr int kRowUnroll = 4;
-    constexpr int kRowsPerBlock = kRowUnroll * 4;
-    constexpr int kColLoad = 4;
-
-    auto block = dim3(threadsPerBlock);
-
-    if (input.template canCastResize<TVec>() &&
-        output.template canCastResize<TVec>()) {
-        auto inputV = input.template castResize<TVec>();
-        auto outputV = output.template castResize<TVec>();
-
-        auto grid = dim3(
-                utils::divUp(outputV.getSize(0), kRowsPerBlock),
-                utils::divUp(outputV.getSize(1), threadsPerBlock * kColLoad));
-
-        assignAlongColumns<TVec, kRowsPerBlock, kRowUnroll, kColLoad>
-                <<<grid, block, 0, stream>>>(inputV, outputV);
-    } else {
-        auto grid = dim3(
-                utils::divUp(output.getSize(0), kRowsPerBlock),
-                utils::divUp(output.getSize(1), threadsPerBlock * kColLoad));
-
-        assignAlongColumns<T, kRowsPerBlock, kRowUnroll, kColLoad>
-                <<<grid, block, 0, stream>>>(input, output);
-    }
-
-    CUDA_TEST_ERROR();
-}
-
-void runAssignAlongColumns(
-        Tensor<float, 1, true>& input,
-        Tensor<float, 2, true>& output,
-        cudaStream_t stream) {
-    runAssignAlongColumns<float, float4>(input, output, stream);
-}
-
-void runAssignAlongColumns(
-        Tensor<half, 1, true>& input,
-        Tensor<half, 2, true>& output,
-        cudaStream_t stream) {
-    runAssignAlongColumns<half, half2>(input, output, stream);
-}
-
-template <typename T>
-void runSumAlongRows(
-        Tensor<T, 1, true>& input,
-        Tensor<T, 2, true>& output,
-        bool zeroClamp,
-        cudaStream_t stream) {
-    FAISS_ASSERT(input.getSize(0) == output.getSize(0));
-
-    int threadsPerBlock =
-            std::min(output.getSize(1), getMaxThreadsCurrentDevice());
-    auto grid = dim3(output.getSize(0));
-    auto block = dim3(threadsPerBlock);
-
-    if (zeroClamp) {
-        sumAlongRows<T, true><<<grid, block, 0, stream>>>(input, output);
-    } else {
-        sumAlongRows<T, false><<<grid, block, 0, stream>>>(input, output);
-    }
-
-    CUDA_TEST_ERROR();
-}
-
-void runSumAlongRows(
-        Tensor<float, 1, true>& input,
-        Tensor<float, 2, true>& output,
-        bool zeroClamp,
-        cudaStream_t stream) {
-    runSumAlongRows<float>(input, output, zeroClamp, stream);
-}
-
-void runSumAlongRows(
-        Tensor<half, 1, true>& input,
-        Tensor<half, 2, true>& output,
-        bool zeroClamp,
-        cudaStream_t stream) {
-    runSumAlongRows<half>(input, output, zeroClamp, stream);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/BroadcastSum.cuh b/faiss/gpu_cuda/impl/BroadcastSum.cuh
deleted file mode 100644
index 6b62a4b9138bf3e1b6016e9ac54390bf0a72683c..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/BroadcastSum.cuh
+++ /dev/null
@@ -1,52 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-// output[x][i] += input[i] for all x
-void runSumAlongColumns(
-        Tensor<float, 1, true>& input,
-        Tensor<float, 2, true>& output,
-        cudaStream_t stream);
-
-void runSumAlongColumns(
-        Tensor<half, 1, true>& input,
-        Tensor<half, 2, true>& output,
-        cudaStream_t stream);
-
-// output[x][i] = input[i] for all x
-void runAssignAlongColumns(
-        Tensor<float, 1, true>& input,
-        Tensor<float, 2, true>& output,
-        cudaStream_t stream);
-
-void runAssignAlongColumns(
-        Tensor<half, 1, true>& input,
-        Tensor<half, 2, true>& output,
-        cudaStream_t stream);
-
-// output[i][x] += input[i] for all x
-// If zeroClamp, output[i][x] = max(output[i][x] + input[i], 0) for all x
-void runSumAlongRows(
-        Tensor<float, 1, true>& input,
-        Tensor<float, 2, true>& output,
-        bool zeroClamp,
-        cudaStream_t stream);
-
-void runSumAlongRows(
-        Tensor<half, 1, true>& input,
-        Tensor<half, 2, true>& output,
-        bool zeroClamp,
-        cudaStream_t stream);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/Distance.cu b/faiss/gpu_cuda/impl/Distance.cu
deleted file mode 100644
index 8204b2b5c4cf9c9c7a805baa14957680a5585a63..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/Distance.cu
+++ /dev/null
@@ -1,644 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/impl/AuxIndexStructures.h>
-#include <faiss/impl/FaissAssert.h>
-#include <faiss/gpu/impl/BroadcastSum.cuh>
-#include <faiss/gpu/impl/Distance.cuh>
-#include <faiss/gpu/impl/DistanceUtils.cuh>
-#include <faiss/gpu/impl/L2Norm.cuh>
-#include <faiss/gpu/impl/L2Select.cuh>
-#include <faiss/gpu/utils/BlockSelectKernel.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/Limits.cuh>
-#include <faiss/gpu/utils/MatrixMult.cuh>
-
-#include <thrust/device_ptr.h>
-#include <thrust/execution_policy.h>
-#include <thrust/fill.h>
-#include <thrust/for_each.h>
-#include <algorithm>
-#include <memory>
-
-namespace faiss {
-namespace gpu {
-
-template <typename T>
-void runAllPairwiseDistance(
-        bool computeL2,
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<T, 2, true>& centroids,
-        bool centroidsRowMajor,
-        Tensor<float, 1, true>* centroidNorms,
-        Tensor<T, 2, true>& queries,
-        bool queriesRowMajor,
-        Tensor<float, 2, true>& outDistances) {
-    // The # of centroids in `centroids` based on memory layout
-    auto numCentroids = centroids.getSize(centroidsRowMajor ? 0 : 1);
-
-    // The # of queries in `queries` based on memory layout
-    auto numQueries = queries.getSize(queriesRowMajor ? 0 : 1);
-
-    // The dimensions of the vectors to consider
-    auto dim = queries.getSize(queriesRowMajor ? 1 : 0);
-    FAISS_ASSERT(
-            (numQueries == 0 || numCentroids == 0) ||
-            dim == centroids.getSize(centroidsRowMajor ? 1 : 0));
-
-    FAISS_ASSERT(outDistances.getSize(0) == numQueries);
-    FAISS_ASSERT(outDistances.getSize(1) == numCentroids);
-
-    // If we're querying against a 0 sized set, just return empty results
-    if (centroids.numElements() == 0) {
-        thrust::fill(
-                thrust::cuda::par.on(stream),
-                outDistances.data(),
-                outDistances.end(),
-                Limits<float>::getMax());
-
-        return;
-    }
-
-    // L2: If ||c||^2 is not pre-computed, calculate it
-    DeviceTensor<float, 1, true> cNorms;
-    if (computeL2 && !centroidNorms) {
-        cNorms = DeviceTensor<float, 1, true>(
-                res, makeTempAlloc(AllocType::Other, stream), {numCentroids});
-        runL2Norm(centroids, centroidsRowMajor, cNorms, true, stream);
-        centroidNorms = &cNorms;
-    }
-
-    //
-    // Prepare norm vector ||q||^2; ||c||^2 is already pre-computed
-    //
-    DeviceTensor<float, 1, true> queryNorms(
-            res, makeTempAlloc(AllocType::Other, stream), {(int)numQueries});
-
-    // ||q||^2
-    if (computeL2) {
-        runL2Norm(queries, queriesRowMajor, queryNorms, true, stream);
-    }
-
-    // L2: distance is ||c||^2 - 2qc + ||q||^2, we compute -2qc
-    // IP: just compute qc
-    // (query id x dim) x (centroid id, dim)' = (query id, centroid id)
-    runMatrixMult(
-            outDistances,
-            false, // not transposed
-            queries,
-            !queriesRowMajor, // transposed MM if col major
-            centroids,
-            centroidsRowMajor, // transposed MM if row major
-            computeL2 ? -2.0f : 1.0f,
-            0.0f,
-            res->getBlasHandleCurrentDevice(),
-            stream);
-
-    if (computeL2) {
-        // Need to add ||q||^2 along rows
-        // Need to add ||c||^2 along columns
-        // FIXME: optimize with a dedicated kernel
-        runSumAlongColumns(*centroidNorms, outDistances, stream);
-
-        runSumAlongRows(
-                queryNorms,
-                outDistances,
-                true, // L2 distances should not go below zero
-                // due to roundoff error
-                stream);
-    }
-}
-
-template <typename T>
-void runDistance(
-        bool computeL2,
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<T, 2, true>& centroids,
-        bool centroidsRowMajor,
-        Tensor<float, 1, true>* centroidNorms,
-        Tensor<T, 2, true>& queries,
-        bool queriesRowMajor,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices,
-        bool ignoreOutDistances) {
-    // The # of centroids in `centroids` based on memory layout
-    auto numCentroids = centroids.getSize(centroidsRowMajor ? 0 : 1);
-
-    // The # of queries in `queries` based on memory layout
-    auto numQueries = queries.getSize(queriesRowMajor ? 0 : 1);
-
-    // The dimensions of the vectors to consider
-    auto dim = queries.getSize(queriesRowMajor ? 1 : 0);
-    FAISS_ASSERT(
-            (numQueries == 0 || numCentroids == 0) ||
-            dim == centroids.getSize(centroidsRowMajor ? 1 : 0));
-
-    FAISS_ASSERT(outDistances.getSize(0) == numQueries);
-    FAISS_ASSERT(outIndices.getSize(0) == numQueries);
-    FAISS_ASSERT(outDistances.getSize(1) == k);
-    FAISS_ASSERT(outIndices.getSize(1) == k);
-
-    // If we're querying against a 0 sized set, just return empty results
-    if (centroids.numElements() == 0) {
-        thrust::fill(
-                thrust::cuda::par.on(stream),
-                outDistances.data(),
-                outDistances.end(),
-                Limits<float>::getMax());
-
-        thrust::fill(
-                thrust::cuda::par.on(stream),
-                outIndices.data(),
-                outIndices.end(),
-                -1);
-
-        return;
-    }
-
-    // L2: If ||c||^2 is not pre-computed, calculate it
-    DeviceTensor<float, 1, true> cNorms;
-    if (computeL2 && !centroidNorms) {
-        cNorms = DeviceTensor<float, 1, true>(
-                res, makeTempAlloc(AllocType::Other, stream), {numCentroids});
-        runL2Norm(centroids, centroidsRowMajor, cNorms, true, stream);
-        centroidNorms = &cNorms;
-    }
-
-    //
-    // Prepare norm vector ||q||^2; ||c||^2 is already pre-computed
-    //
-    DeviceTensor<float, 1, true> queryNorms(
-            res, makeTempAlloc(AllocType::Other, stream), {(int)numQueries});
-
-    // ||q||^2
-    if (computeL2) {
-        runL2Norm(queries, queriesRowMajor, queryNorms, true, stream);
-    }
-
-    // By default, aim to use up to 512 MB of memory for the processing, with
-    // both number of queries and number of centroids being at least 512.
-    int tileRows = 0;
-    int tileCols = 0;
-    chooseTileSize(
-            numQueries,
-            numCentroids,
-            dim,
-            sizeof(T),
-            res->getTempMemoryAvailableCurrentDevice(),
-            tileRows,
-            tileCols);
-
-    int numColTiles = utils::divUp(numCentroids, tileCols);
-
-    // We can have any number of vectors to query against, even less than k, in
-    // which case we'll return -1 for the index
-    FAISS_ASSERT(k <= GPU_MAX_SELECTION_K); // select limitation
-
-    // Temporary output memory space we'll use
-    DeviceTensor<float, 2, true> distanceBuf1(
-            res, makeTempAlloc(AllocType::Other, stream), {tileRows, tileCols});
-    DeviceTensor<float, 2, true> distanceBuf2(
-            res, makeTempAlloc(AllocType::Other, stream), {tileRows, tileCols});
-    DeviceTensor<float, 2, true>* distanceBufs[2] = {
-            &distanceBuf1, &distanceBuf2};
-
-    DeviceTensor<float, 2, true> outDistanceBuf1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {tileRows, numColTiles * k});
-    DeviceTensor<float, 2, true> outDistanceBuf2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {tileRows, numColTiles * k});
-    DeviceTensor<float, 2, true>* outDistanceBufs[2] = {
-            &outDistanceBuf1, &outDistanceBuf2};
-
-    DeviceTensor<int, 2, true> outIndexBuf1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {tileRows, numColTiles * k});
-    DeviceTensor<int, 2, true> outIndexBuf2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {tileRows, numColTiles * k});
-    DeviceTensor<int, 2, true>* outIndexBufs[2] = {
-            &outIndexBuf1, &outIndexBuf2};
-
-    auto streams = res->getAlternateStreamsCurrentDevice();
-    streamWait(streams, {stream});
-
-    int curStream = 0;
-    bool interrupt = false;
-
-    // Tile over the input queries
-    for (int i = 0; i < numQueries; i += tileRows) {
-        if (interrupt || InterruptCallback::is_interrupted()) {
-            interrupt = true;
-            break;
-        }
-
-        int curQuerySize = std::min(tileRows, numQueries - i);
-
-        auto outDistanceView = outDistances.narrow(0, i, curQuerySize);
-        auto outIndexView = outIndices.narrow(0, i, curQuerySize);
-
-        auto queryView =
-                queries.narrow(queriesRowMajor ? 0 : 1, i, curQuerySize);
-        auto queryNormNiew = queryNorms.narrow(0, i, curQuerySize);
-
-        auto outDistanceBufRowView =
-                outDistanceBufs[curStream]->narrow(0, 0, curQuerySize);
-        auto outIndexBufRowView =
-                outIndexBufs[curStream]->narrow(0, 0, curQuerySize);
-
-        // Tile over the centroids
-        for (int j = 0; j < numCentroids; j += tileCols) {
-            if (InterruptCallback::is_interrupted()) {
-                interrupt = true;
-                break;
-            }
-
-            int curCentroidSize = std::min(tileCols, numCentroids - j);
-            int curColTile = j / tileCols;
-
-            auto centroidsView = sliceCentroids(
-                    centroids, centroidsRowMajor, j, curCentroidSize);
-
-            auto distanceBufView = distanceBufs[curStream]
-                                           ->narrow(0, 0, curQuerySize)
-                                           .narrow(1, 0, curCentroidSize);
-
-            auto outDistanceBufColView =
-                    outDistanceBufRowView.narrow(1, k * curColTile, k);
-            auto outIndexBufColView =
-                    outIndexBufRowView.narrow(1, k * curColTile, k);
-
-            // L2: distance is ||c||^2 - 2qc + ||q||^2, we compute -2qc
-            // IP: just compute qc
-            // (query id x dim) x (centroid id, dim)' = (query id, centroid id)
-            runMatrixMult(
-                    distanceBufView,
-                    false, // not transposed
-                    queryView,
-                    !queriesRowMajor, // transposed MM if col major
-                    centroidsView,
-                    centroidsRowMajor, // transposed MM if row major
-                    computeL2 ? -2.0f : 1.0f,
-                    0.0f,
-                    res->getBlasHandleCurrentDevice(),
-                    streams[curStream]);
-
-            if (computeL2) {
-                // For L2 distance, we use this fused kernel that performs both
-                // adding ||c||^2 to -2qc and k-selection, so we only need two
-                // passes (one write by the gemm, one read here) over the huge
-                // region of output memory
-                //
-                // If we aren't tiling along the number of centroids, we can
-                // perform the output work directly
-                if (tileCols == numCentroids) {
-                    // Write into the final output
-                    runL2SelectMin(
-                            distanceBufView,
-                            *centroidNorms,
-                            outDistanceView,
-                            outIndexView,
-                            k,
-                            streams[curStream]);
-
-                    if (!ignoreOutDistances) {
-                        // expand (query id) to (query id, k) by duplicating
-                        // along rows top-k ||c||^2 - 2qc + ||q||^2 in the form
-                        // (query id, k)
-                        runSumAlongRows(
-                                queryNormNiew,
-                                outDistanceView,
-                                true, // L2 distances should not go below zero
-                                      // due to roundoff error
-                                streams[curStream]);
-                    }
-                } else {
-                    auto centroidNormsView =
-                            centroidNorms->narrow(0, j, curCentroidSize);
-
-                    // Write into our intermediate output
-                    runL2SelectMin(
-                            distanceBufView,
-                            centroidNormsView,
-                            outDistanceBufColView,
-                            outIndexBufColView,
-                            k,
-                            streams[curStream]);
-
-                    if (!ignoreOutDistances) {
-                        // expand (query id) to (query id, k) by duplicating
-                        // along rows top-k ||c||^2 - 2qc + ||q||^2 in the form
-                        // (query id, k)
-                        runSumAlongRows(
-                                queryNormNiew,
-                                outDistanceBufColView,
-                                true, // L2 distances should not go below zero
-                                      // due to roundoff error
-                                streams[curStream]);
-                    }
-                }
-            } else {
-                // For IP, just k-select the output for this tile
-                if (tileCols == numCentroids) {
-                    // Write into the final output
-                    runBlockSelect(
-                            distanceBufView,
-                            outDistanceView,
-                            outIndexView,
-                            true,
-                            k,
-                            streams[curStream]);
-                } else {
-                    // Write into the intermediate output
-                    runBlockSelect(
-                            distanceBufView,
-                            outDistanceBufColView,
-                            outIndexBufColView,
-                            true,
-                            k,
-                            streams[curStream]);
-                }
-            }
-        }
-
-        // As we're finished with processing a full set of centroids, perform
-        // the final k-selection
-        if (tileCols != numCentroids) {
-            // The indices are tile-relative; for each tile of k, we need to add
-            // tileCols to the index
-            runIncrementIndex(
-                    outIndexBufRowView, k, tileCols, streams[curStream]);
-
-            runBlockSelectPair(
-                    outDistanceBufRowView,
-                    outIndexBufRowView,
-                    outDistanceView,
-                    outIndexView,
-                    computeL2 ? false : true,
-                    k,
-                    streams[curStream]);
-        }
-
-        curStream = (curStream + 1) % 2;
-    }
-
-    // Have the desired ordering stream wait on the multi-stream
-    streamWait({stream}, streams);
-
-    if (interrupt) {
-        FAISS_THROW_MSG("interrupted");
-    }
-}
-
-template <typename T>
-void runL2Distance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<T, 2, true>& centroids,
-        bool centroidsRowMajor,
-        Tensor<float, 1, true>* centroidNorms,
-        Tensor<T, 2, true>& queries,
-        bool queriesRowMajor,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices,
-        bool ignoreOutDistances = false) {
-    runDistance<T>(
-            true, // L2
-            res,
-            stream,
-            centroids,
-            centroidsRowMajor,
-            centroidNorms,
-            queries,
-            queriesRowMajor,
-            k,
-            outDistances,
-            outIndices,
-            ignoreOutDistances);
-}
-
-template <typename T>
-void runIPDistance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<T, 2, true>& centroids,
-        bool centroidsRowMajor,
-        Tensor<T, 2, true>& queries,
-        bool queriesRowMajor,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices) {
-    runDistance<T>(
-            false, // IP
-            res,
-            stream,
-            centroids,
-            centroidsRowMajor,
-            nullptr, // no centroid norms provided
-            queries,
-            queriesRowMajor,
-            k,
-            outDistances,
-            outIndices,
-            false);
-}
-
-//
-// Instantiations of the distance templates
-//
-
-void runAllPairwiseL2Distance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<float, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<float, 1, true>* vectorNorms,
-        Tensor<float, 2, true>& queries,
-        bool queriesRowMajor,
-        Tensor<float, 2, true>& outDistances) {
-    runAllPairwiseDistance<float>(
-            true,
-            res,
-            stream,
-            vectors,
-            vectorsRowMajor,
-            vectorNorms,
-            queries,
-            queriesRowMajor,
-            outDistances);
-}
-
-void runAllPairwiseL2Distance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<half, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<float, 1, true>* vectorNorms,
-        Tensor<half, 2, true>& queries,
-        bool queriesRowMajor,
-        Tensor<float, 2, true>& outDistances) {
-    runAllPairwiseDistance<half>(
-            true,
-            res,
-            stream,
-            vectors,
-            vectorsRowMajor,
-            vectorNorms,
-            queries,
-            queriesRowMajor,
-            outDistances);
-}
-
-void runAllPairwiseIPDistance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<float, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<float, 2, true>& queries,
-        bool queriesRowMajor,
-        Tensor<float, 2, true>& outDistances) {
-    runAllPairwiseDistance<float>(
-            false,
-            res,
-            stream,
-            vectors,
-            vectorsRowMajor,
-            nullptr,
-            queries,
-            queriesRowMajor,
-            outDistances);
-}
-
-void runAllPairwiseIPDistance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<half, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<half, 2, true>& queries,
-        bool queriesRowMajor,
-        Tensor<float, 2, true>& outDistances) {
-    runAllPairwiseDistance<half>(
-            false,
-            res,
-            stream,
-            vectors,
-            vectorsRowMajor,
-            nullptr,
-            queries,
-            queriesRowMajor,
-            outDistances);
-}
-
-void runL2Distance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<float, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<float, 1, true>* vectorNorms,
-        Tensor<float, 2, true>& queries,
-        bool queriesRowMajor,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices,
-        bool ignoreOutDistances) {
-    runL2Distance<float>(
-            res,
-            stream,
-            vectors,
-            vectorsRowMajor,
-            vectorNorms,
-            queries,
-            queriesRowMajor,
-            k,
-            outDistances,
-            outIndices,
-            ignoreOutDistances);
-}
-
-void runL2Distance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<half, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<float, 1, true>* vectorNorms,
-        Tensor<half, 2, true>& queries,
-        bool queriesRowMajor,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices,
-        bool ignoreOutDistances) {
-    runL2Distance<half>(
-            res,
-            stream,
-            vectors,
-            vectorsRowMajor,
-            vectorNorms,
-            queries,
-            queriesRowMajor,
-            k,
-            outDistances,
-            outIndices,
-            ignoreOutDistances);
-}
-
-void runIPDistance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<float, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<float, 2, true>& queries,
-        bool queriesRowMajor,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices) {
-    runIPDistance<float>(
-            res,
-            stream,
-            vectors,
-            vectorsRowMajor,
-            queries,
-            queriesRowMajor,
-            k,
-            outDistances,
-            outIndices);
-}
-
-void runIPDistance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<half, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<half, 2, true>& queries,
-        bool queriesRowMajor,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices) {
-    runIPDistance<half>(
-            res,
-            stream,
-            vectors,
-            vectorsRowMajor,
-            queries,
-            queriesRowMajor,
-            k,
-            outDistances,
-            outIndices);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/Distance.cuh b/faiss/gpu_cuda/impl/Distance.cuh
deleted file mode 100644
index 19105ffa1553aec31d2504d466e69cbcf4fa1304..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/Distance.cuh
+++ /dev/null
@@ -1,385 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/impl/GeneralDistance.cuh>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-
-namespace faiss {
-namespace gpu {
-
-class GpuResources;
-
-/// Calculates brute-force L2 distance between `vectors` and `queries`, not
-/// performing top-k filtering.
-/// FIXME: the output distances must fit in GPU memory
-void runAllPairwiseL2Distance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<float, 2, true>& vectors,
-        bool vectorsRowMajor,
-        // can be optionally pre-computed; nullptr if we
-        // have to compute it upon the call
-        Tensor<float, 1, true>* vectorNorms,
-        Tensor<float, 2, true>& queries,
-        bool queriesRowMajor,
-        Tensor<float, 2, true>& outDistances);
-
-void runAllPairwiseL2Distance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<half, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<float, 1, true>* vectorNorms,
-        Tensor<half, 2, true>& queries,
-        bool queriesRowMajor,
-        Tensor<float, 2, true>& outDistances);
-
-void runAllPairwiseIPDistance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<float, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<float, 2, true>& queries,
-        bool queriesRowMajor,
-        Tensor<float, 2, true>& outDistances);
-
-void runAllPairwiseIPDistance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<half, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<half, 2, true>& queries,
-        bool queriesRowMajor,
-        Tensor<float, 2, true>& outDistances);
-
-/// Calculates brute-force L2 distance between `vectors` and
-/// `queries`, returning the k closest results seen
-void runL2Distance(
-        GpuResources* resources,
-        cudaStream_t stream,
-        Tensor<float, 2, true>& vectors,
-        bool vectorsRowMajor,
-        // can be optionally pre-computed; nullptr if we
-        // have to compute it upon the call
-        Tensor<float, 1, true>* vectorNorms,
-        Tensor<float, 2, true>& queries,
-        bool queriesRowMajor,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices,
-        // Do we care about `outDistances`? If not, we can
-        // take shortcuts.
-        bool ignoreOutDistances = false);
-
-void runL2Distance(
-        GpuResources* resources,
-        cudaStream_t stream,
-        Tensor<half, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<float, 1, true>* vectorNorms,
-        Tensor<half, 2, true>& queries,
-        bool queriesRowMajor,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices,
-        bool ignoreOutDistances = false);
-
-/// Calculates brute-force inner product distance between `vectors`
-/// and `queries`, returning the k closest results seen
-void runIPDistance(
-        GpuResources* resources,
-        cudaStream_t stream,
-        Tensor<float, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<float, 2, true>& queries,
-        bool queriesRowMajor,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices);
-
-void runIPDistance(
-        GpuResources* resources,
-        cudaStream_t stream,
-        Tensor<half, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<half, 2, true>& queries,
-        bool queriesRowMajor,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices);
-
-//
-// General distance implementation, assumes that all arguments are on the
-// device. This is the top-level internal distance function to call to dispatch
-// based on metric type.
-//
-template <typename T>
-void allPairwiseDistanceOnDevice(
-        GpuResources* resources,
-        int device,
-        cudaStream_t stream,
-        Tensor<T, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<float, 1, true>* vectorNorms,
-        Tensor<T, 2, true>& queries,
-        bool queriesRowMajor,
-        faiss::MetricType metric,
-        float metricArg,
-        Tensor<float, 2, true>& outDistances) {
-    DeviceScope ds(device);
-    // We are guaranteed that all data arguments are resident on our preferred
-    // `device` here
-
-    // L2 and IP are specialized to use GEMM and an optimized L2 + selection or
-    // pure k-selection kernel.
-    if ((metric == faiss::MetricType::METRIC_L2) ||
-        (metric == faiss::MetricType::METRIC_Lp && metricArg == 2)) {
-        runAllPairwiseL2Distance(
-                resources,
-                stream,
-                vectors,
-                vectorsRowMajor,
-                vectorNorms,
-                queries,
-                queriesRowMajor,
-                outDistances);
-    } else if (metric == faiss::MetricType::METRIC_INNER_PRODUCT) {
-        runAllPairwiseIPDistance(
-                resources,
-                stream,
-                vectors,
-                vectorsRowMajor,
-                queries,
-                queriesRowMajor,
-                outDistances);
-    } else {
-        //
-        // General pairwise distance kernel
-        //
-        // The general distance kernel does not have specializations for
-        // transpositions (NN, NT, TN); instead, the transposition is just
-        // handled upon data load for now, which could result in poor data
-        // loading behavior for NT / TN. This can be fixed at a later date if
-        // desired, but efficiency is low versus GEMM anyways.
-        //
-
-        Tensor<T, 2> tVectorsDimInnermost = vectorsRowMajor
-                ? vectors.transposeInnermost(1)
-                : vectors.transposeInnermost(0);
-        Tensor<T, 2> tQueriesDimInnermost = queriesRowMajor
-                ? queries.transposeInnermost(1)
-                : queries.transposeInnermost(0);
-
-        if ((metric == faiss::MetricType::METRIC_L1) ||
-            (metric == faiss::MetricType::METRIC_Lp && metricArg == 1)) {
-            runGeneralDistanceKernel(
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    outDistances,
-                    L1Distance(),
-                    stream);
-        } else if (metric == faiss::MetricType::METRIC_Lp && metricArg == -1) {
-            // A way to test L2 distance
-            runGeneralDistanceKernel(
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    outDistances,
-                    L2Distance(),
-                    stream);
-        } else if (metric == faiss::MetricType::METRIC_Lp) {
-            runGeneralDistanceKernel(
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    outDistances,
-                    LpDistance(metricArg),
-                    stream);
-        } else if (metric == faiss::MetricType::METRIC_Linf) {
-            runGeneralDistanceKernel(
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    outDistances,
-                    LinfDistance(),
-                    stream);
-        } else if (metric == faiss::MetricType::METRIC_Canberra) {
-            runGeneralDistanceKernel(
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    outDistances,
-                    CanberraDistance(),
-                    stream);
-        } else if (metric == faiss::MetricType::METRIC_BrayCurtis) {
-            runGeneralDistanceKernel(
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    outDistances,
-                    BrayCurtisDistance(),
-                    stream);
-        } else if (metric == faiss::MetricType::METRIC_JensenShannon) {
-            runGeneralDistanceKernel(
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    outDistances,
-                    JensenShannonDistance(),
-                    stream);
-        } else {
-            FAISS_THROW_FMT("unimplemented metric type %d", metric);
-        }
-    }
-}
-
-//
-// General distance implementation, assumes that all arguments are on the
-// device. This is the top-level internal distance function to call to dispatch
-// based on metric type.
-//
-template <typename T>
-void bfKnnOnDevice(
-        GpuResources* resources,
-        int device,
-        cudaStream_t stream,
-        Tensor<T, 2, true>& vectors,
-        bool vectorsRowMajor,
-        Tensor<float, 1, true>* vectorNorms,
-        Tensor<T, 2, true>& queries,
-        bool queriesRowMajor,
-        int k,
-        faiss::MetricType metric,
-        float metricArg,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices,
-        bool ignoreOutDistances) {
-    DeviceScope ds(device);
-    // We are guaranteed that all data arguments are resident on our preferred
-    // `device` here
-
-    // L2 and IP are specialized to use GEMM and an optimized L2 + selection or
-    // pure k-selection kernel.
-    if ((metric == faiss::MetricType::METRIC_L2) ||
-        (metric == faiss::MetricType::METRIC_Lp && metricArg == 2)) {
-        runL2Distance(
-                resources,
-                stream,
-                vectors,
-                vectorsRowMajor,
-                vectorNorms,
-                queries,
-                queriesRowMajor,
-                k,
-                outDistances,
-                outIndices);
-    } else if (metric == faiss::MetricType::METRIC_INNER_PRODUCT) {
-        runIPDistance(
-                resources,
-                stream,
-                vectors,
-                vectorsRowMajor,
-                queries,
-                queriesRowMajor,
-                k,
-                outDistances,
-                outIndices);
-    } else {
-        //
-        // General pairwise distance kernel
-        //
-        // The general distance kernel does not have specializations for
-        // transpositions (NN, NT, TN); instead, the transposition is just
-        // handled upon data load for now, which could result in poor data
-        // loading behavior for NT / TN. This can be fixed at a later date if
-        // desired, but efficiency is low versus GEMM anyways.
-        //
-
-        Tensor<T, 2> tVectorsDimInnermost = vectorsRowMajor
-                ? vectors.transposeInnermost(1)
-                : vectors.transposeInnermost(0);
-        Tensor<T, 2> tQueriesDimInnermost = queriesRowMajor
-                ? queries.transposeInnermost(1)
-                : queries.transposeInnermost(0);
-
-        if ((metric == faiss::MetricType::METRIC_L1) ||
-            (metric == faiss::MetricType::METRIC_Lp && metricArg == 1)) {
-            runGeneralDistance(
-                    resources,
-                    stream,
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    k,
-                    L1Distance(),
-                    outDistances,
-                    outIndices);
-        } else if (metric == faiss::MetricType::METRIC_Lp && metricArg == -1) {
-            // A way to test L2 distance
-            runGeneralDistance(
-                    resources,
-                    stream,
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    k,
-                    L2Distance(),
-                    outDistances,
-                    outIndices);
-        } else if (metric == faiss::MetricType::METRIC_Lp) {
-            runGeneralDistance(
-                    resources,
-                    stream,
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    k,
-                    LpDistance(metricArg),
-                    outDistances,
-                    outIndices);
-        } else if (metric == faiss::MetricType::METRIC_Linf) {
-            runGeneralDistance(
-                    resources,
-                    stream,
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    k,
-                    LinfDistance(),
-                    outDistances,
-                    outIndices);
-        } else if (metric == faiss::MetricType::METRIC_Canberra) {
-            runGeneralDistance(
-                    resources,
-                    stream,
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    k,
-                    CanberraDistance(),
-                    outDistances,
-                    outIndices);
-        } else if (metric == faiss::MetricType::METRIC_BrayCurtis) {
-            runGeneralDistance(
-                    resources,
-                    stream,
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    k,
-                    BrayCurtisDistance(),
-                    outDistances,
-                    outIndices);
-        } else if (metric == faiss::MetricType::METRIC_JensenShannon) {
-            runGeneralDistance(
-                    resources,
-                    stream,
-                    tVectorsDimInnermost,
-                    tQueriesDimInnermost,
-                    k,
-                    JensenShannonDistance(),
-                    outDistances,
-                    outIndices);
-        } else {
-            FAISS_THROW_FMT("unimplemented metric type %d", metric);
-        }
-    }
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/DistanceUtils.cuh b/faiss/gpu_cuda/impl/DistanceUtils.cuh
deleted file mode 100644
index 894a37e0d70e371939db341409e62865b9ca8b1b..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/DistanceUtils.cuh
+++ /dev/null
@@ -1,345 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <algorithm>
-
-#include <faiss/gpu/utils/Tensor.cuh>
-
-//
-// Shared utilities for brute-force distance calculations
-//
-
-namespace faiss {
-namespace gpu {
-
-struct IPDistance {
-    __host__ __device__ IPDistance() : dist(0) {}
-
-    static constexpr bool kDirection = true; // maximize
-    static constexpr float kIdentityData = 0;
-    static constexpr float kMaxDistance = -std::numeric_limits<float>::max();
-
-    __host__ __device__ void handle(float a, float b) {
-        dist += a * b;
-    }
-
-    __host__ __device__ float reduce() {
-        return dist;
-    }
-
-    __host__ __device__ void combine(const IPDistance& v) {
-        dist += v.dist;
-    }
-
-    __host__ __device__ IPDistance zero() const {
-        return IPDistance();
-    }
-
-    float dist;
-};
-
-struct L1Distance {
-    __host__ __device__ L1Distance() : dist(0) {}
-
-    static constexpr bool kDirection = false; // minimize
-    static constexpr float kIdentityData = 0;
-    static constexpr float kMaxDistance = std::numeric_limits<float>::max();
-
-    __host__ __device__ void handle(float a, float b) {
-        dist += fabsf(a - b);
-    }
-
-    __host__ __device__ float reduce() {
-        return dist;
-    }
-
-    __host__ __device__ void combine(const L1Distance& v) {
-        dist += v.dist;
-    }
-
-    __host__ __device__ L1Distance zero() const {
-        return L1Distance();
-    }
-
-    float dist;
-};
-
-struct L2Distance {
-    __host__ __device__ L2Distance() : dist(0) {}
-
-    static constexpr bool kDirection = false; // minimize
-    static constexpr float kIdentityData = 0;
-    static constexpr float kMaxDistance = std::numeric_limits<float>::max();
-
-    __host__ __device__ void handle(float a, float b) {
-        float v = a - b;
-        dist += v * v;
-    }
-
-    __host__ __device__ float reduce() {
-        return dist;
-    }
-
-    __host__ __device__ void combine(const L2Distance& v) {
-        dist += v.dist;
-    }
-
-    __host__ __device__ L2Distance zero() const {
-        return L2Distance();
-    }
-
-    float dist;
-};
-
-struct LpDistance {
-    __host__ __device__ LpDistance() : p(2), dist(0) {}
-
-    __host__ __device__ LpDistance(float arg) : p(arg), dist(0) {}
-
-    __host__ __device__ LpDistance(const LpDistance& v)
-            : p(v.p), dist(v.dist) {}
-
-    __host__ __device__ LpDistance& operator=(const LpDistance& v) {
-        p = v.p;
-        dist = v.dist;
-        return *this;
-    }
-
-    static constexpr bool kDirection = false; // minimize
-    static constexpr float kIdentityData = 0;
-    static constexpr float kMaxDistance = std::numeric_limits<float>::max();
-
-    __host__ __device__ void handle(float a, float b) {
-        dist += powf(fabsf(a - b), p);
-    }
-
-    __host__ __device__ float reduce() {
-        return dist;
-    }
-
-    __host__ __device__ void combine(const LpDistance& v) {
-        dist += v.dist;
-    }
-
-    __host__ __device__ LpDistance zero() const {
-        return LpDistance(p);
-    }
-
-    float p;
-    float dist;
-};
-
-struct LinfDistance {
-    __host__ __device__ LinfDistance() : dist(0) {}
-
-    static constexpr bool kDirection = false; // minimize
-    static constexpr float kIdentityData = 0;
-    static constexpr float kMaxDistance = std::numeric_limits<float>::max();
-
-    __host__ __device__ void handle(float a, float b) {
-        dist = fmaxf(dist, fabsf(a - b));
-    }
-
-    __host__ __device__ float reduce() {
-        return dist;
-    }
-
-    __host__ __device__ void combine(const LinfDistance& v) {
-        dist = fmaxf(dist, v.dist);
-    }
-
-    __host__ __device__ LinfDistance zero() const {
-        return LinfDistance();
-    }
-
-    float dist;
-};
-
-struct CanberraDistance {
-    __host__ __device__ CanberraDistance() : dist(0) {}
-
-    static constexpr bool kDirection = false; // minimize
-    static constexpr float kIdentityData = 0;
-    static constexpr float kMaxDistance = std::numeric_limits<float>::max();
-
-    __host__ __device__ void handle(float a, float b) {
-        float denom = fabsf(a) + fabsf(b);
-        dist += fabsf(a - b) / denom;
-    }
-
-    __host__ __device__ float reduce() {
-        return dist;
-    }
-
-    __host__ __device__ void combine(const CanberraDistance& v) {
-        dist += v.dist;
-    }
-
-    __host__ __device__ CanberraDistance zero() const {
-        return CanberraDistance();
-    }
-
-    float dist;
-};
-
-struct BrayCurtisDistance {
-    __host__ __device__ BrayCurtisDistance() : numerator(0), denominator(0) {}
-
-    static constexpr bool kDirection = false; // minimize
-    static constexpr float kIdentityData = 0;
-    static constexpr float kMaxDistance = std::numeric_limits<float>::max();
-
-    __host__ __device__ void handle(float a, float b) {
-        numerator += fabsf(a - b);
-        denominator += fabsf(a + b);
-    }
-
-    __host__ __device__ float reduce() {
-        return (numerator / denominator);
-    }
-
-    __host__ __device__ void combine(const BrayCurtisDistance& v) {
-        numerator += v.numerator;
-        denominator += v.denominator;
-    }
-
-    __host__ __device__ BrayCurtisDistance zero() const {
-        return BrayCurtisDistance();
-    }
-
-    float numerator;
-    float denominator;
-};
-
-struct JensenShannonDistance {
-    __host__ __device__ JensenShannonDistance() : dist(0) {}
-
-    static constexpr bool kDirection = false; // minimize
-    static constexpr float kIdentityData = 0;
-    static constexpr float kMaxDistance = std::numeric_limits<float>::max();
-
-    __host__ __device__ void handle(float a, float b) {
-        float m = 0.5f * (a + b);
-
-        float x = m / a;
-        float y = m / b;
-
-        float kl1 = -a * log(x);
-        float kl2 = -b * log(y);
-
-        dist += kl1 + kl2;
-    }
-
-    __host__ __device__ float reduce() {
-        return 0.5 * dist;
-    }
-
-    __host__ __device__ void combine(const JensenShannonDistance& v) {
-        dist += v.dist;
-    }
-
-    __host__ __device__ JensenShannonDistance zero() const {
-        return JensenShannonDistance();
-    }
-
-    float dist;
-};
-
-template <typename T, bool InnerContig>
-Tensor<T, 2, InnerContig> sliceCentroids(
-        Tensor<T, 2, InnerContig>& centroids,
-        bool centroidsRowMajor,
-        int startCentroid,
-        int num) {
-    // Row major is (num, dim)
-    // Col major is (dim, num)
-    if (startCentroid == 0 &&
-        num == centroids.getSize(centroidsRowMajor ? 0 : 1)) {
-        return centroids;
-    }
-
-    return centroids.narrow(centroidsRowMajor ? 0 : 1, startCentroid, num);
-}
-
-// For each chunk of k indices, increment the index by chunk * increment
-template <typename T>
-__global__ void incrementIndex(
-        Tensor<T, 2, true> indices,
-        int k,
-        int increment) {
-    for (int i = threadIdx.x; i < k; i += blockDim.x) {
-        indices[blockIdx.y][blockIdx.x * k + i] += blockIdx.x * increment;
-    }
-}
-
-// Used to update result indices in distance computation where the number of
-// centroids is high, and is tiled
-template <typename T>
-void runIncrementIndex(
-        Tensor<T, 2, true>& indices,
-        int k,
-        int increment,
-        cudaStream_t stream) {
-    dim3 grid(indices.getSize(1) / k, indices.getSize(0));
-    int block = std::min(k, 512);
-
-    // should be exact
-    FAISS_ASSERT(grid.x * k == indices.getSize(1));
-
-    incrementIndex<<<grid, block, 0, stream>>>(indices, k, increment);
-}
-
-// If the inner size (dim) of the vectors is small, we want a larger query tile
-// size, like 1024
-inline void chooseTileSize(
-        int numQueries,
-        int numCentroids,
-        int dim,
-        int elementSize,
-        size_t tempMemAvailable,
-        int& tileRows,
-        int& tileCols) {
-    // The matrix multiplication should be large enough to be efficient, but if
-    // it is too large, we seem to lose efficiency as opposed to
-    // double-streaming. Each tile size here defines 1/2 of the memory use due
-    // to double streaming. We ignore available temporary memory, as that is
-    // adjusted independently by the user and can thus meet these requirements
-    // (or not). For <= 4 GB GPUs, prefer 512 MB of usage. For <= 8 GB GPUs,
-    // prefer 768 MB of usage. Otherwise, prefer 1 GB of usage.
-    auto totalMem = getCurrentDeviceProperties().totalGlobalMem;
-
-    int targetUsage = 0;
-
-    if (totalMem <= ((size_t)4) * 1024 * 1024 * 1024) {
-        targetUsage = 512 * 1024 * 1024;
-    } else if (totalMem <= ((size_t)8) * 1024 * 1024 * 1024) {
-        targetUsage = 768 * 1024 * 1024;
-    } else {
-        targetUsage = 1024 * 1024 * 1024;
-    }
-
-    targetUsage /= 2 * elementSize;
-
-    // 512 seems to be a batch size sweetspot for float32.
-    // If we are on float16, increase to 512.
-    // If the k size (vec dim) of the matrix multiplication is small (<= 32),
-    // increase to 1024.
-    int preferredTileRows = 512;
-    if (dim <= 32) {
-        preferredTileRows = 1024;
-    }
-
-    tileRows = std::min(preferredTileRows, numQueries);
-
-    // tileCols is the remainder size
-    tileCols = std::min(targetUsage / preferredTileRows, numCentroids);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/FlatIndex.cu b/faiss/gpu_cuda/impl/FlatIndex.cu
deleted file mode 100644
index 79057b2bda8120225cf5ea480bb2ef71cc950585..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/FlatIndex.cu
+++ /dev/null
@@ -1,323 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/impl/Distance.cuh>
-#include <faiss/gpu/impl/FlatIndex.cuh>
-#include <faiss/gpu/impl/L2Norm.cuh>
-#include <faiss/gpu/impl/VectorResidual.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/CopyUtils.cuh>
-#include <faiss/gpu/utils/Transpose.cuh>
-
-namespace faiss {
-namespace gpu {
-
-FlatIndex::FlatIndex(
-        GpuResources* res,
-        int dim,
-        bool useFloat16,
-        bool storeTransposed,
-        MemorySpace space)
-        : resources_(res),
-          dim_(dim),
-          useFloat16_(useFloat16),
-          storeTransposed_(storeTransposed),
-          space_(space),
-          num_(0),
-          rawData_(
-                  res,
-                  AllocInfo(
-                          AllocType::FlatData,
-                          getCurrentDevice(),
-                          space,
-                          res->getDefaultStreamCurrentDevice())) {}
-
-bool FlatIndex::getUseFloat16() const {
-    return useFloat16_;
-}
-
-/// Returns the number of vectors we contain
-int FlatIndex::getSize() const {
-    if (useFloat16_) {
-        return vectorsHalf_.getSize(0);
-    } else {
-        return vectors_.getSize(0);
-    }
-}
-
-int FlatIndex::getDim() const {
-    if (useFloat16_) {
-        return vectorsHalf_.getSize(1);
-    } else {
-        return vectors_.getSize(1);
-    }
-}
-
-void FlatIndex::reserve(size_t numVecs, cudaStream_t stream) {
-    if (useFloat16_) {
-        rawData_.reserve(numVecs * dim_ * sizeof(half), stream);
-    } else {
-        rawData_.reserve(numVecs * dim_ * sizeof(float), stream);
-    }
-}
-
-template <>
-Tensor<float, 2, true>& FlatIndex::getVectorsRef<float>() {
-    // Should not call this unless we are in float32 mode
-    FAISS_ASSERT(!useFloat16_);
-    return getVectorsFloat32Ref();
-}
-
-template <>
-Tensor<half, 2, true>& FlatIndex::getVectorsRef<half>() {
-    // Should not call this unless we are in float16 mode
-    FAISS_ASSERT(useFloat16_);
-    return getVectorsFloat16Ref();
-}
-
-Tensor<float, 2, true>& FlatIndex::getVectorsFloat32Ref() {
-    // Should not call this unless we are in float32 mode
-    FAISS_ASSERT(!useFloat16_);
-
-    return vectors_;
-}
-
-Tensor<half, 2, true>& FlatIndex::getVectorsFloat16Ref() {
-    // Should not call this unless we are in float16 mode
-    FAISS_ASSERT(useFloat16_);
-
-    return vectorsHalf_;
-}
-
-DeviceTensor<float, 2, true> FlatIndex::getVectorsFloat32Copy(
-        cudaStream_t stream) {
-    return getVectorsFloat32Copy(0, num_, stream);
-}
-
-DeviceTensor<float, 2, true> FlatIndex::getVectorsFloat32Copy(
-        int from,
-        int num,
-        cudaStream_t stream) {
-    DeviceTensor<float, 2, true> vecFloat32(
-            resources_, makeDevAlloc(AllocType::Other, stream), {num, dim_});
-
-    if (useFloat16_) {
-        auto halfNarrow = vectorsHalf_.narrowOutermost(from, num);
-        convertTensor<half, float, 2>(stream, halfNarrow, vecFloat32);
-    } else {
-        vectors_.copyTo(vecFloat32, stream);
-    }
-
-    return vecFloat32;
-}
-
-void FlatIndex::query(
-        Tensor<float, 2, true>& input,
-        int k,
-        faiss::MetricType metric,
-        float metricArg,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices,
-        bool exactDistance) {
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    if (useFloat16_) {
-        // We need to convert the input to float16 for comparison to ourselves
-        auto inputHalf = convertTensorTemporary<float, half, 2>(
-                resources_, stream, input);
-
-        query(inputHalf,
-              k,
-              metric,
-              metricArg,
-              outDistances,
-              outIndices,
-              exactDistance);
-    } else {
-        bfKnnOnDevice(
-                resources_,
-                getCurrentDevice(),
-                stream,
-                storeTransposed_ ? vectorsTransposed_ : vectors_,
-                !storeTransposed_, // is vectors row major?
-                &norms_,
-                input,
-                true, // input is row major
-                k,
-                metric,
-                metricArg,
-                outDistances,
-                outIndices,
-                !exactDistance);
-    }
-}
-
-void FlatIndex::query(
-        Tensor<half, 2, true>& input,
-        int k,
-        faiss::MetricType metric,
-        float metricArg,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices,
-        bool exactDistance) {
-    FAISS_ASSERT(useFloat16_);
-
-    bfKnnOnDevice(
-            resources_,
-            getCurrentDevice(),
-            resources_->getDefaultStreamCurrentDevice(),
-            storeTransposed_ ? vectorsHalfTransposed_ : vectorsHalf_,
-            !storeTransposed_, // is vectors row major?
-            &norms_,
-            input,
-            true, // input is row major
-            k,
-            metric,
-            metricArg,
-            outDistances,
-            outIndices,
-            !exactDistance);
-}
-
-void FlatIndex::computeResidual(
-        Tensor<float, 2, true>& vecs,
-        Tensor<int, 1, true>& listIds,
-        Tensor<float, 2, true>& residuals) {
-    if (useFloat16_) {
-        runCalcResidual(
-                vecs,
-                getVectorsFloat16Ref(),
-                listIds,
-                residuals,
-                resources_->getDefaultStreamCurrentDevice());
-    } else {
-        runCalcResidual(
-                vecs,
-                getVectorsFloat32Ref(),
-                listIds,
-                residuals,
-                resources_->getDefaultStreamCurrentDevice());
-    }
-}
-
-void FlatIndex::reconstruct(
-        Tensor<int, 1, true>& listIds,
-        Tensor<float, 2, true>& vecs) {
-    if (useFloat16_) {
-        runReconstruct(
-                listIds,
-                getVectorsFloat16Ref(),
-                vecs,
-                resources_->getDefaultStreamCurrentDevice());
-    } else {
-        runReconstruct(
-                listIds,
-                getVectorsFloat32Ref(),
-                vecs,
-                resources_->getDefaultStreamCurrentDevice());
-    }
-}
-
-void FlatIndex::reconstruct(
-        Tensor<int, 2, true>& listIds,
-        Tensor<float, 3, true>& vecs) {
-    auto listIds1 = listIds.downcastOuter<1>();
-    auto vecs2 = vecs.downcastOuter<2>();
-
-    reconstruct(listIds1, vecs2);
-}
-
-void FlatIndex::add(const float* data, int numVecs, cudaStream_t stream) {
-    if (numVecs == 0) {
-        return;
-    }
-
-    if (useFloat16_) {
-        // Make sure that `data` is on our device; we'll run the
-        // conversion on our device
-        auto devData = toDeviceTemporary<float, 2>(
-                resources_,
-                getCurrentDevice(),
-                (float*)data,
-                stream,
-                {numVecs, dim_});
-
-        auto devDataHalf = convertTensorTemporary<float, half, 2>(
-                resources_, stream, devData);
-
-        rawData_.append(
-                (char*)devDataHalf.data(),
-                devDataHalf.getSizeInBytes(),
-                stream,
-                true /* reserve exactly */);
-    } else {
-        rawData_.append(
-                (char*)data,
-                (size_t)dim_ * numVecs * sizeof(float),
-                stream,
-                true /* reserve exactly */);
-    }
-
-    num_ += numVecs;
-
-    if (useFloat16_) {
-        DeviceTensor<half, 2, true> vectorsHalf(
-                (half*)rawData_.data(), {(int)num_, dim_});
-        vectorsHalf_ = std::move(vectorsHalf);
-    } else {
-        DeviceTensor<float, 2, true> vectors(
-                (float*)rawData_.data(), {(int)num_, dim_});
-        vectors_ = std::move(vectors);
-    }
-
-    if (storeTransposed_) {
-        if (useFloat16_) {
-            vectorsHalfTransposed_ = DeviceTensor<half, 2, true>(
-                    resources_,
-                    makeSpaceAlloc(AllocType::FlatData, space_, stream),
-                    {dim_, (int)num_});
-            runTransposeAny(vectorsHalf_, 0, 1, vectorsHalfTransposed_, stream);
-        } else {
-            vectorsTransposed_ = DeviceTensor<float, 2, true>(
-                    resources_,
-                    makeSpaceAlloc(AllocType::FlatData, space_, stream),
-                    {dim_, (int)num_});
-            runTransposeAny(vectors_, 0, 1, vectorsTransposed_, stream);
-        }
-    }
-
-    // Precompute L2 norms of our database
-    if (useFloat16_) {
-        DeviceTensor<float, 1, true> norms(
-                resources_,
-                makeSpaceAlloc(AllocType::FlatData, space_, stream),
-                {(int)num_});
-        runL2Norm(vectorsHalf_, true, norms, true, stream);
-        norms_ = std::move(norms);
-    } else {
-        DeviceTensor<float, 1, true> norms(
-                resources_,
-                makeSpaceAlloc(AllocType::FlatData, space_, stream),
-                {(int)num_});
-        runL2Norm(vectors_, true, norms, true, stream);
-        norms_ = std::move(norms);
-    }
-}
-
-void FlatIndex::reset() {
-    rawData_.clear();
-    vectors_ = DeviceTensor<float, 2, true>();
-    vectorsTransposed_ = DeviceTensor<float, 2, true>();
-    vectorsHalf_ = DeviceTensor<half, 2, true>();
-    vectorsHalfTransposed_ = DeviceTensor<half, 2, true>();
-    norms_ = DeviceTensor<float, 1, true>();
-    num_ = 0;
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/FlatIndex.cuh b/faiss/gpu_cuda/impl/FlatIndex.cuh
deleted file mode 100644
index d701f7841611c3c3499d07fac3bc1028afda0583..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/FlatIndex.cuh
+++ /dev/null
@@ -1,139 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/MetricType.h>
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/DeviceVector.cuh>
-
-namespace faiss {
-namespace gpu {
-
-class GpuResources;
-
-/// Holder of GPU resources for a particular flat index
-class FlatIndex {
-   public:
-    FlatIndex(
-            GpuResources* res,
-            int dim,
-            bool useFloat16,
-            bool storeTransposed,
-            MemorySpace space);
-
-    /// Whether or not this flat index primarily stores data in float16
-    bool getUseFloat16() const;
-
-    /// Returns the number of vectors we contain
-    int getSize() const;
-
-    /// Returns the dimensionality of the vectors
-    int getDim() const;
-
-    /// Reserve storage that can contain at least this many vectors
-    void reserve(size_t numVecs, cudaStream_t stream);
-
-    /// Returns the vectors based on the type desired; the FlatIndex must be of
-    /// the same type (float16 or float32) to not assert
-    template <typename T>
-    Tensor<T, 2, true>& getVectorsRef();
-
-    /// Returns a reference to our vectors currently in use
-    Tensor<float, 2, true>& getVectorsFloat32Ref();
-
-    /// Returns a reference to our vectors currently in use (useFloat16 mode)
-    Tensor<half, 2, true>& getVectorsFloat16Ref();
-
-    /// Performs a copy of the vectors on the given device, converting
-    /// as needed from float16
-    DeviceTensor<float, 2, true> getVectorsFloat32Copy(cudaStream_t stream);
-
-    /// Returns only a subset of the vectors
-    DeviceTensor<float, 2, true> getVectorsFloat32Copy(
-            int from,
-            int num,
-            cudaStream_t stream);
-
-    void query(
-            Tensor<float, 2, true>& vecs,
-            int k,
-            faiss::MetricType metric,
-            float metricArg,
-            Tensor<float, 2, true>& outDistances,
-            Tensor<int, 2, true>& outIndices,
-            bool exactDistance);
-
-    void query(
-            Tensor<half, 2, true>& vecs,
-            int k,
-            faiss::MetricType metric,
-            float metricArg,
-            Tensor<float, 2, true>& outDistances,
-            Tensor<int, 2, true>& outIndices,
-            bool exactDistance);
-
-    /// Compute residual for set of vectors
-    void computeResidual(
-            Tensor<float, 2, true>& vecs,
-            Tensor<int, 1, true>& listIds,
-            Tensor<float, 2, true>& residuals);
-
-    /// Gather vectors given the set of IDs
-    void reconstruct(
-            Tensor<int, 1, true>& listIds,
-            Tensor<float, 2, true>& vecs);
-
-    void reconstruct(
-            Tensor<int, 2, true>& listIds,
-            Tensor<float, 3, true>& vecs);
-
-    /// Add vectors to ourselves; the pointer passed can be on the host
-    /// or the device
-    void add(const float* data, int numVecs, cudaStream_t stream);
-
-    /// Free all storage
-    void reset();
-
-   private:
-    /// Collection of GPU resources that we use
-    GpuResources* resources_;
-
-    /// Dimensionality of our vectors
-    const int dim_;
-
-    /// Float16 data format
-    const bool useFloat16_;
-
-    /// Store vectors in transposed layout for speed; makes addition to
-    /// the index slower
-    const bool storeTransposed_;
-
-    /// Memory space for our allocations
-    MemorySpace space_;
-
-    /// How many vectors we have
-    int num_;
-
-    /// The underlying expandable storage
-    DeviceVector<char> rawData_;
-
-    /// Vectors currently in rawData_
-    DeviceTensor<float, 2, true> vectors_;
-    DeviceTensor<float, 2, true> vectorsTransposed_;
-
-    /// Vectors currently in rawData_, float16 form
-    DeviceTensor<half, 2, true> vectorsHalf_;
-    DeviceTensor<half, 2, true> vectorsHalfTransposed_;
-
-    /// Precomputed L2 norms
-    DeviceTensor<float, 1, true> norms_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/GeneralDistance.cuh b/faiss/gpu_cuda/impl/GeneralDistance.cuh
deleted file mode 100644
index 3a25fed00f871b3fc02cfacde0bd0ec68663f6cf..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/GeneralDistance.cuh
+++ /dev/null
@@ -1,453 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/MetricType.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/impl/AuxIndexStructures.h>
-#include <faiss/gpu/impl/DistanceUtils.cuh>
-#include <faiss/gpu/utils/BlockSelectKernel.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/Select.cuh>
-
-#include <thrust/device_ptr.h>
-#include <thrust/execution_policy.h>
-#include <thrust/fill.h>
-#include <thrust/for_each.h>
-#include <algorithm>
-#include <iostream>
-#include <memory>
-
-//
-// Kernels for non-L2 / inner product distances
-//
-
-namespace faiss {
-namespace gpu {
-
-// Reduction tree operator
-template <typename DistanceOp, int N>
-struct ReduceDistanceOp {
-    __device__ static DistanceOp reduce(DistanceOp ops[N]) {
-        DistanceOp vals[N / 2];
-#pragma unroll
-        for (int i = 0; i < N / 2; ++i) {
-            vals[i] = ops[i * 2];
-            vals[i].combine(ops[i * 2 + 1]);
-        }
-
-        return ReduceDistanceOp<DistanceOp, N / 2>::reduce(vals);
-    }
-};
-
-template <typename DistanceOp>
-struct ReduceDistanceOp<DistanceOp, 1> {
-    __device__ static DistanceOp reduce(DistanceOp ops[1]) {
-        return ops[0];
-    }
-};
-
-// Implements a pairwise reduction tree
-template <typename T, int Unroll, int DimMultiple, typename DistanceOp>
-inline __device__ DistanceOp
-reduce(const DistanceOp& in,
-       const T queryTile[kWarpSize][DimMultiple * kWarpSize + 1],
-       const T vecTile[kWarpSize][DimMultiple * kWarpSize + 1]) {
-    DistanceOp accs[Unroll];
-#pragma unroll
-    for (int i = 0; i < Unroll; ++i) {
-        accs[i] = in.zero();
-    }
-
-    auto vecTileBase = vecTile[threadIdx.x];
-    auto queryTileBase = queryTile[threadIdx.y];
-
-#pragma unroll
-    for (int i = 0; i < Unroll; ++i) {
-#pragma unroll
-        for (int j = 0; j < (kWarpSize * DimMultiple / Unroll); ++j) {
-            int idx = i * (kWarpSize * DimMultiple / Unroll) + j;
-            accs[i].handle(
-                    ConvertTo<float>::to(queryTileBase[idx]),
-                    ConvertTo<float>::to(vecTileBase[idx]));
-        }
-    }
-
-    return ReduceDistanceOp<DistanceOp, Unroll>::reduce(accs);
-}
-
-// Our general distance matrix "multiplication" kernel
-template <typename T, typename DistanceOp, bool InnerContig>
-__launch_bounds__(kWarpSize* kWarpSize) __global__ void generalDistance(
-        Tensor<T, 2, InnerContig> query, // m x k
-        Tensor<T, 2, InnerContig> vec,   // n x k
-        DistanceOp op,
-        Tensor<float, 2, true> out) { // m x n
-    constexpr int kDimMultiple = 1;
-
-    __shared__ T queryTile[kWarpSize][kWarpSize * kDimMultiple + 1];
-    __shared__ T vecTile[kWarpSize][kWarpSize * kDimMultiple + 1];
-
-    // block y -> query
-    // block x -> vector
-
-    int queryBlock = blockIdx.y * kWarpSize;
-    int queryThread = queryBlock + threadIdx.y;
-
-    int vecBlock = blockIdx.x * kWarpSize;
-    int vecThreadLoad = vecBlock + threadIdx.y;
-    int vecThreadSave = vecBlock + threadIdx.x;
-
-    DistanceOp acc = op.zero();
-
-    auto queryTileBase = queryTile[threadIdx.y];
-    auto vecTileBase = vecTile[threadIdx.y];
-
-    auto queryBase = query[queryThread];
-    auto vecBase = vec[vecThreadLoad];
-
-    if ((blockIdx.x != (gridDim.x - 1)) && (blockIdx.y != (gridDim.y - 1))) {
-        //
-        // Interior tile
-        //
-        int limit =
-                utils::roundDown(query.getSize(1), kWarpSize * kDimMultiple);
-
-        for (int k = threadIdx.x; k < limit; k += kWarpSize * kDimMultiple) {
-            // Load query tile
-#pragma unroll
-            for (int i = 0; i < kDimMultiple; ++i) {
-                queryTileBase[threadIdx.x + i * kWarpSize] =
-                        queryBase[k + i * kWarpSize];
-                vecTileBase[threadIdx.x + i * kWarpSize] =
-                        vecBase[k + i * kWarpSize];
-            }
-
-            __syncthreads();
-
-            // thread (y, x) does (query y, vec x)
-            acc.combine(reduce<T, 8, kDimMultiple, DistanceOp>(
-                    op, queryTile, vecTile));
-
-            __syncthreads();
-        }
-
-        // Handle remainder
-        if (limit < query.getSize(1)) {
-#pragma unroll
-            for (int i = 0; i < kDimMultiple; ++i) {
-                int k = limit + threadIdx.x + i * kWarpSize;
-                bool kInBounds = k < query.getSize(1);
-
-                queryTileBase[threadIdx.x + i * kWarpSize] =
-                        kInBounds ? queryBase[k] : ConvertTo<T>::to(0);
-
-                vecTileBase[threadIdx.x + i * kWarpSize] =
-                        kInBounds ? vecBase[k] : ConvertTo<T>::to(0);
-            }
-
-            __syncthreads();
-
-            int remainder = query.getSize(1) - limit;
-
-            // thread (y, x) does (query y, vec x)
-#pragma unroll
-            for (int i = 0; i < remainder; ++i) {
-                acc.handle(
-                        ConvertTo<float>::to(queryTileBase[i]),
-                        ConvertTo<float>::to(vecTile[threadIdx.x][i]));
-            }
-        }
-
-        // Write out results
-        out[queryThread][vecThreadSave] = acc.reduce();
-    } else {
-        //
-        // Otherwise, we're an exterior tile
-        //
-
-        bool queryThreadInBounds = queryThread < query.getSize(0);
-        bool vecThreadInBoundsLoad = vecThreadLoad < vec.getSize(0);
-        bool vecThreadInBoundsSave = vecThreadSave < vec.getSize(0);
-        int limit = utils::roundDown(query.getSize(1), kWarpSize);
-
-        for (int k = threadIdx.x; k < limit; k += kWarpSize) {
-            // Load query tile
-            queryTileBase[threadIdx.x] =
-                    queryThreadInBounds ? queryBase[k] : ConvertTo<T>::to(0);
-
-            vecTileBase[threadIdx.x] =
-                    vecThreadInBoundsLoad ? vecBase[k] : ConvertTo<T>::to(0);
-
-            __syncthreads();
-
-            // thread (y, x) does (query y, vec x)
-#pragma unroll
-            for (int i = 0; i < kWarpSize; ++i) {
-                acc.handle(
-                        ConvertTo<float>::to(queryTileBase[i]),
-                        ConvertTo<float>::to(vecTile[threadIdx.x][i]));
-            }
-
-            __syncthreads();
-        }
-
-        // Handle remainder
-        if (limit < query.getSize(1)) {
-            int k = limit + threadIdx.x;
-            bool kInBounds = k < query.getSize(1);
-
-            // Load query tile
-            queryTileBase[threadIdx.x] = queryThreadInBounds && kInBounds
-                    ? queryBase[k]
-                    : ConvertTo<T>::to(0);
-
-            vecTileBase[threadIdx.x] = vecThreadInBoundsLoad && kInBounds
-                    ? vecBase[k]
-                    : ConvertTo<T>::to(0);
-
-            __syncthreads();
-
-            int remainder = query.getSize(1) - limit;
-
-            // thread (y, x) does (query y, vec x)
-            for (int i = 0; i < remainder; ++i) {
-                acc.handle(
-                        ConvertTo<float>::to(queryTileBase[i]),
-                        ConvertTo<float>::to(vecTile[threadIdx.x][i]));
-            }
-        }
-
-        // Write out results
-        if (queryThreadInBounds && vecThreadInBoundsSave) {
-            out[queryThread][vecThreadSave] = acc.reduce();
-        }
-    }
-}
-
-template <typename T, typename DistanceOp, bool InnerContig>
-void runGeneralDistanceKernel(
-        Tensor<T, 2, InnerContig>& vecs,
-        Tensor<T, 2, InnerContig>& query,
-        Tensor<float, 2, true>& out,
-        const DistanceOp& op,
-        cudaStream_t stream) {
-    FAISS_ASSERT(vecs.getSize(1) == query.getSize(1));
-    FAISS_ASSERT(out.getSize(0) == query.getSize(0));
-    FAISS_ASSERT(out.getSize(1) == vecs.getSize(0));
-
-    dim3 grid(
-            utils::divUp(vecs.getSize(0), kWarpSize),
-            utils::divUp(query.getSize(0), kWarpSize));
-    dim3 block(kWarpSize, kWarpSize);
-
-    generalDistance<<<grid, block, 0, stream>>>(query, vecs, op, out);
-}
-
-template <typename T, typename DistanceOp, bool InnerContig>
-void runGeneralDistance(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<T, 2, InnerContig>& centroids,
-        Tensor<T, 2, InnerContig>& queries,
-        int k,
-        const DistanceOp& op,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices) {
-    // The # of centroids in `centroids` based on memory layout
-    auto numCentroids = centroids.getSize(0);
-
-    // The # of queries in `queries` based on memory layout
-    auto numQueries = queries.getSize(0);
-
-    // The dimensions of the vectors to consider
-    auto dim = queries.getSize(1);
-    FAISS_ASSERT(
-            (numQueries == 0 || numCentroids == 0) ||
-            dim == centroids.getSize(1));
-
-    FAISS_ASSERT(outDistances.getSize(0) == numQueries);
-    FAISS_ASSERT(outIndices.getSize(0) == numQueries);
-    FAISS_ASSERT(outDistances.getSize(1) == k);
-    FAISS_ASSERT(outIndices.getSize(1) == k);
-
-    // If we're quering against a 0 sized set, just return empty results
-    if (centroids.numElements() == 0) {
-        thrust::fill(
-                thrust::cuda::par.on(stream),
-                outDistances.data(),
-                outDistances.end(),
-                Limits<float>::getMax());
-
-        thrust::fill(
-                thrust::cuda::par.on(stream),
-                outIndices.data(),
-                outIndices.end(),
-                -1);
-
-        return;
-    }
-
-    // By default, aim to use up to 512 MB of memory for the processing, with
-    // both number of queries and number of centroids being at least 512.
-    int tileRows = 0;
-    int tileCols = 0;
-    chooseTileSize(
-            numQueries,
-            numCentroids,
-            dim,
-            sizeof(T),
-            res->getTempMemoryAvailableCurrentDevice(),
-            tileRows,
-            tileCols);
-
-    int numColTiles = utils::divUp(numCentroids, tileCols);
-
-    // We can have any number of vectors to query against, even less than k, in
-    // which case we'll return -1 for the index
-    FAISS_ASSERT(k <= GPU_MAX_SELECTION_K); // select limitation
-
-    // Temporary output memory space we'll use
-    DeviceTensor<float, 2, true> distanceBuf1(
-            res, makeTempAlloc(AllocType::Other, stream), {tileRows, tileCols});
-    DeviceTensor<float, 2, true> distanceBuf2(
-            res, makeTempAlloc(AllocType::Other, stream), {tileRows, tileCols});
-    DeviceTensor<float, 2, true>* distanceBufs[2] = {
-            &distanceBuf1, &distanceBuf2};
-
-    DeviceTensor<float, 2, true> outDistanceBuf1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {tileRows, numColTiles * k});
-    DeviceTensor<float, 2, true> outDistanceBuf2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {tileRows, numColTiles * k});
-    DeviceTensor<float, 2, true>* outDistanceBufs[2] = {
-            &outDistanceBuf1, &outDistanceBuf2};
-
-    DeviceTensor<int, 2, true> outIndexBuf1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {tileRows, numColTiles * k});
-    DeviceTensor<int, 2, true> outIndexBuf2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {tileRows, numColTiles * k});
-    DeviceTensor<int, 2, true>* outIndexBufs[2] = {
-            &outIndexBuf1, &outIndexBuf2};
-
-    auto streams = res->getAlternateStreamsCurrentDevice();
-    streamWait(streams, {stream});
-
-    int curStream = 0;
-    bool interrupt = false;
-
-    // Tile over the input queries
-    for (int i = 0; i < numQueries; i += tileRows) {
-        if (interrupt || InterruptCallback::is_interrupted()) {
-            interrupt = true;
-            break;
-        }
-
-        int curQuerySize = std::min(tileRows, numQueries - i);
-
-        auto outDistanceView = outDistances.narrow(0, i, curQuerySize);
-        auto outIndexView = outIndices.narrow(0, i, curQuerySize);
-
-        auto queryView = queries.narrow(0, i, curQuerySize);
-
-        auto outDistanceBufRowView =
-                outDistanceBufs[curStream]->narrow(0, 0, curQuerySize);
-        auto outIndexBufRowView =
-                outIndexBufs[curStream]->narrow(0, 0, curQuerySize);
-
-        // Tile over the centroids
-        for (int j = 0; j < numCentroids; j += tileCols) {
-            if (InterruptCallback::is_interrupted()) {
-                interrupt = true;
-                break;
-            }
-
-            int curCentroidSize = std::min(tileCols, numCentroids - j);
-            int curColTile = j / tileCols;
-
-            auto centroidsView =
-                    sliceCentroids(centroids, true, j, curCentroidSize);
-
-            auto distanceBufView = distanceBufs[curStream]
-                                           ->narrow(0, 0, curQuerySize)
-                                           .narrow(1, 0, curCentroidSize);
-
-            auto outDistanceBufColView =
-                    outDistanceBufRowView.narrow(1, k * curColTile, k);
-            auto outIndexBufColView =
-                    outIndexBufRowView.narrow(1, k * curColTile, k);
-
-            runGeneralDistanceKernel(
-                    centroidsView,
-                    queryView,
-                    distanceBufView,
-                    op,
-                    streams[curStream]);
-
-            // For IP, just k-select the output for this tile
-            if (tileCols == numCentroids) {
-                // Write into the final output
-                runBlockSelect(
-                        distanceBufView,
-                        outDistanceView,
-                        outIndexView,
-                        DistanceOp::kDirection,
-                        k,
-                        streams[curStream]);
-            } else {
-                // Write into the intermediate output
-                runBlockSelect(
-                        distanceBufView,
-                        outDistanceBufColView,
-                        outIndexBufColView,
-                        DistanceOp::kDirection,
-                        k,
-                        streams[curStream]);
-            }
-        }
-
-        // As we're finished with processing a full set of centroids, perform
-        // the final k-selection
-        if (tileCols != numCentroids) {
-            // The indices are tile-relative; for each tile of k, we need to add
-            // tileCols to the index
-            runIncrementIndex(
-                    outIndexBufRowView, k, tileCols, streams[curStream]);
-
-            runBlockSelectPair(
-                    outDistanceBufRowView,
-                    outIndexBufRowView,
-                    outDistanceView,
-                    outIndexView,
-                    DistanceOp::kDirection,
-                    k,
-                    streams[curStream]);
-        }
-
-        curStream = (curStream + 1) % 2;
-    }
-
-    // Have the desired ordering stream wait on the multi-stream
-    streamWait({stream}, streams);
-
-    if (interrupt) {
-        FAISS_THROW_MSG("interrupted");
-    }
-
-    CUDA_TEST_ERROR();
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/GpuScalarQuantizer.cuh b/faiss/gpu_cuda/impl/GpuScalarQuantizer.cuh
deleted file mode 100644
index 36d16e63ac6801ec34d7a8fb01201f08349a86e4..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/GpuScalarQuantizer.cuh
+++ /dev/null
@@ -1,837 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/IndexScalarQuantizer.h>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-#include <faiss/gpu/utils/PtxUtils.cuh>
-#include <faiss/gpu/utils/WarpShuffles.cuh>
-
-namespace faiss {
-namespace gpu {
-
-inline bool isSQSupported(ScalarQuantizer::QuantizerType qtype) {
-    switch (qtype) {
-        case ScalarQuantizer::QuantizerType::QT_8bit:
-        case ScalarQuantizer::QuantizerType::QT_8bit_uniform:
-        case ScalarQuantizer::QuantizerType::QT_8bit_direct:
-        case ScalarQuantizer::QuantizerType::QT_4bit:
-        case ScalarQuantizer::QuantizerType::QT_4bit_uniform:
-        case ScalarQuantizer::QuantizerType::QT_6bit:
-        case ScalarQuantizer::QuantizerType::QT_fp16:
-            return true;
-        default:
-            return false;
-    }
-}
-
-// Wrapper around the CPU ScalarQuantizer that allows storage of parameters in
-// GPU memory
-struct GpuScalarQuantizer : public ScalarQuantizer {
-    GpuScalarQuantizer(GpuResources* res, const ScalarQuantizer& sq)
-            : ScalarQuantizer(sq),
-              gpuTrained(DeviceTensor<float, 1, true>(
-                      res,
-                      makeDevAlloc(AllocType::Quantizer, 0),
-                      {(int)sq.trained.size()})) {
-        HostTensor<float, 1, true> cpuTrained(
-                (float*)sq.trained.data(), {(int)sq.trained.size()});
-
-        auto stream = res->getDefaultStreamCurrentDevice();
-        gpuTrained.copyFrom(cpuTrained, stream);
-    }
-
-    // ScalarQuantizer::trained copied to GPU memory
-    DeviceTensor<float, 1, true> gpuTrained;
-};
-
-//
-// Quantizer codecs
-//
-
-// QT is the quantizer type implemented
-// DimMultiple is the minimum guaranteed dimension multiple of the vectors
-// encoded (used for ensuring alignment for memory load/stores)
-template <int QT, int DimMultiple>
-struct Codec {};
-
-/////
-//
-// 32 bit encodings
-// (does not use qtype)
-//
-/////
-
-struct CodecFloat {
-    /// How many dimensions per iteration we are handling for encoding or
-    /// decoding
-    static constexpr int kDimPerIter = 1;
-
-    CodecFloat(int vecBytes) : bytesPerVec(vecBytes) {}
-
-    size_t getSmemSize(int dim) {
-        return 0;
-    }
-    inline __device__ void initKernel(float* smem, int dim) {}
-
-    inline __device__ void decode(void* data, int vec, int d, float* out)
-            const {
-        float* p = (float*)&((uint8_t*)data)[vec * bytesPerVec];
-        out[0] = p[d];
-    }
-
-    inline __device__ float decodePartial(void* data, int vec, int d, int subD)
-            const {
-        // doesn't need implementing (kDimPerIter == 1)
-        return 0.0f;
-    }
-
-    inline __device__ void encode(
-            void* data,
-            int vec,
-            int d,
-            float v[kDimPerIter]) const {
-        float* p = (float*)&((uint8_t*)data)[vec * bytesPerVec];
-        p[d] = v[0];
-    }
-
-    inline __device__ void encodePartial(
-            void* data,
-            int vec,
-            int d,
-            int remaining,
-            float v[kDimPerIter]) const {
-        // doesn't need implementing (kDimPerIter == 1)
-    }
-
-    //
-    // new implementation
-    //
-    using EncodeT = float;
-    static constexpr int kEncodeBits = 32;
-
-    inline __device__ EncodeT encodeNew(int dim, float v) const {
-        return v;
-    }
-
-    inline __device__ float decodeNew(int dim, EncodeT v) const {
-        return v;
-    }
-
-    int bytesPerVec;
-};
-
-/////
-//
-// 16 bit encodings
-//
-/////
-
-// Arbitrary dimension fp16
-template <>
-struct Codec<ScalarQuantizer::QuantizerType::QT_fp16, 1> {
-    /// How many dimensions per iteration we are handling for encoding or
-    /// decoding
-    static constexpr int kDimPerIter = 1;
-
-    Codec(int vecBytes) : bytesPerVec(vecBytes) {}
-
-    size_t getSmemSize(int dim) {
-        return 0;
-    }
-    inline __device__ void initKernel(float* smem, int dim) {}
-
-    inline __device__ void decode(void* data, int vec, int d, float* out)
-            const {
-        half* p = (half*)&((uint8_t*)data)[vec * bytesPerVec];
-        out[0] = Convert<half, float>()(p[d]);
-    }
-
-    inline __device__ float decodePartial(void* data, int vec, int d, int subD)
-            const {
-        // doesn't need implementing (kDimPerIter == 1)
-        return 0.0f;
-    }
-
-    inline __device__ void encode(
-            void* data,
-            int vec,
-            int d,
-            float v[kDimPerIter]) const {
-        half* p = (half*)&((uint8_t*)data)[vec * bytesPerVec];
-        p[d] = Convert<float, half>()(v[0]);
-    }
-
-    inline __device__ void encodePartial(
-            void* data,
-            int vec,
-            int d,
-            int remaining,
-            float v[kDimPerIter]) const {
-        // doesn't need implementing (kDimPerIter == 1)
-    }
-
-    //
-    // new implementation
-    //
-    using EncodeT = half;
-    static constexpr int kEncodeBits = 16;
-
-    inline __device__ EncodeT encodeNew(int dim, float v) const {
-        return Convert<float, half>()(v);
-    }
-
-    inline __device__ float decodeNew(int dim, EncodeT v) const {
-        return Convert<half, float>()(v);
-    }
-
-    int bytesPerVec;
-};
-
-/////
-//
-// 8 bit encodings
-//
-/////
-
-template <int DimPerIter>
-struct Get8BitType {};
-
-template <>
-struct Get8BitType<1> {
-    using T = uint8_t;
-};
-
-template <>
-struct Get8BitType<2> {
-    using T = uint16_t;
-};
-
-template <>
-struct Get8BitType<4> {
-    using T = uint32_t;
-};
-
-// Uniform quantization across all dimensions
-template <int DimMultiple>
-struct Codec<ScalarQuantizer::QuantizerType::QT_8bit_uniform, DimMultiple> {
-    /// How many dimensions per iteration we are handling for encoding or
-    /// decoding
-    static constexpr int kDimPerIter = DimMultiple;
-    using MemT = typename Get8BitType<DimMultiple>::T;
-
-    Codec(int vecBytes, float min, float diff)
-            : bytesPerVec(vecBytes), vmin(min), vdiff(diff) {}
-
-    size_t getSmemSize(int dim) {
-        return 0;
-    }
-    inline __device__ void initKernel(float* smem, int dim) {
-        // We are performing vmin + vdiff * (v + 0.5) / (2^bits - 1)
-        // This can be simplified to vmin' + vdiff' * v where:
-        // vdiff' = vdiff / (2^bits - 1)
-        // vmin' = vmin + 0.5 * vdiff'
-        auto vd = vdiff * (1.0f / 255.0f);
-        vmin = vmin + 0.5f * vd;
-        vdiff = vd;
-    }
-
-    inline __device__ float decodeHelper(uint8_t v) const {
-        return vmin + (float)v * vdiff;
-    }
-
-    inline __device__ void decode(void* data, int vec, int d, float* out)
-            const {
-        MemT* p = (MemT*)&((uint8_t*)data)[vec * bytesPerVec];
-        MemT pv = p[d];
-
-        uint8_t x[kDimPerIter];
-#pragma unroll
-        for (int i = 0; i < kDimPerIter; ++i) {
-            x[i] = (uint8_t)((pv >> (i * 8)) & 0xffU);
-        }
-
-        float xDec[kDimPerIter];
-#pragma unroll
-        for (int i = 0; i < kDimPerIter; ++i) {
-            xDec[i] = decodeHelper(x[i]);
-        }
-
-#pragma unroll
-        for (int i = 0; i < kDimPerIter; ++i) {
-            out[i] = xDec[i];
-        }
-    }
-
-    inline __device__ float decodePartial(void* data, int vec, int d, int subD)
-            const {
-        if (DimMultiple > 1) {
-            // should not be called
-            assert(false);
-        }
-
-        // otherwise does not need implementing
-        return 0;
-    }
-
-    inline __device__ uint8_t encodeHelper(float v) const {
-        float x = (v - vmin) / vdiff;
-        x = fminf(1.0f, fmaxf(0.0f, x));
-        return (uint8_t)(x * 255.0f);
-    }
-
-    inline __device__ void encode(
-            void* data,
-            int vec,
-            int d,
-            float v[kDimPerIter]) const {
-        MemT* p = (MemT*)&((uint8_t*)data)[vec * bytesPerVec];
-
-        MemT x[kDimPerIter];
-#pragma unroll
-        for (int i = 0; i < kDimPerIter; ++i) {
-            x[i] = encodeHelper(v[i]);
-        }
-
-        MemT out = 0;
-#pragma unroll
-        for (int i = 0; i < kDimPerIter; ++i) {
-            out |= (x[i] << (i * 8));
-        }
-
-        p[d] = out;
-    }
-
-    inline __device__ void encodePartial(
-            void* data,
-            int vec,
-            int d,
-            int remaining,
-            float v[kDimPerIter]) const {
-        if (DimMultiple > 1) {
-            // should not be called
-            assert(false);
-        }
-
-        // otherwise does not need implementing
-    }
-
-    //
-    // interleaved code implementation
-    //
-    using EncodeT = uint8_t;
-    static constexpr int kEncodeBits = 8;
-
-    inline __device__ EncodeT encodeNew(int dim, float v) const {
-        return encodeHelper(v);
-    }
-
-    inline __device__ float decodeNew(int dim, EncodeT v) const {
-        return decodeHelper(v);
-    }
-
-    int bytesPerVec;
-    float vmin;
-    float vdiff;
-};
-
-// Uniform quantization per each dimension
-template <int DimMultiple>
-struct Codec<ScalarQuantizer::QuantizerType::QT_8bit, DimMultiple> {
-    /// How many dimensions per iteration we are handling for encoding or
-    /// decoding
-    static constexpr int kDimPerIter = DimMultiple;
-    using MemT = typename Get8BitType<DimMultiple>::T;
-
-    Codec(int vecBytes, float* min, float* diff)
-            : bytesPerVec(vecBytes),
-              vmin(min),
-              vdiff(diff),
-              smemVmin(nullptr),
-              smemVdiff(nullptr) {}
-
-    size_t getSmemSize(int dim) {
-        return sizeof(float) * dim * 2;
-    }
-
-    // Initialize shared memory and local storage
-    // It is up to the user to call a trailing syncthreads (after any other
-    // initialization required has been done)
-    inline __device__ void initKernel(float* smem, int dim) {
-        smemVmin = smem;
-        smemVdiff = smem + dim;
-
-        for (int i = threadIdx.x; i < dim; i += blockDim.x) {
-            // We are performing vmin + vdiff * (v + 0.5) / (2^bits - 1)
-            // This can be simplified to vmin' + vdiff' * v where:
-            // vdiff' = vdiff / (2^bits - 1)
-            // vmin' = vmin + 0.5 * vdiff'
-            auto vd = vdiff[i] * (1.0f / 255.0f);
-            smemVmin[i] = vmin[i] + 0.5f * vd;
-            smemVdiff[i] = vd;
-        }
-    }
-
-    inline __device__ float decodeHelper(uint8_t v, int realDim) const {
-        return smemVmin[realDim] + (float)v * smemVdiff[realDim];
-    }
-
-    inline __device__ void decode(void* data, int vec, int d, float* out)
-            const {
-        MemT* p = (MemT*)&((uint8_t*)data)[vec * bytesPerVec];
-        MemT pv = p[d];
-        int realDim = d * kDimPerIter;
-
-        uint8_t x[kDimPerIter];
-#pragma unroll
-        for (int i = 0; i < kDimPerIter; ++i) {
-            x[i] = (uint8_t)((pv >> (i * 8)) & 0xffU);
-        }
-
-        float xDec[kDimPerIter];
-#pragma unroll
-        for (int i = 0; i < kDimPerIter; ++i) {
-            xDec[i] = decodeHelper(x[i], realDim + i);
-        }
-
-#pragma unroll
-        for (int i = 0; i < kDimPerIter; ++i) {
-            out[i] = xDec[i];
-        }
-    }
-
-    inline __device__ float decodePartial(void* data, int vec, int d, int subD)
-            const {
-        if (DimMultiple > 1) {
-            // should not be called
-            assert(false);
-        }
-
-        // otherwise does not need implementing
-        return 0;
-    }
-
-    inline __device__ uint8_t encodeHelper(float v, int realDim) const {
-        float x = (v - vmin[realDim]) / vdiff[realDim];
-        x = fminf(1.0f, fmaxf(0.0f, x));
-        return (uint8_t)(x * 255.0f);
-    }
-
-    inline __device__ void encode(
-            void* data,
-            int vec,
-            int d,
-            float v[kDimPerIter]) const {
-        MemT* p = (MemT*)&((uint8_t*)data)[vec * bytesPerVec];
-        int realDim = d * kDimPerIter;
-
-        MemT x[kDimPerIter];
-#pragma unroll
-        for (int i = 0; i < kDimPerIter; ++i) {
-            x[i] = encodeHelper(v[i], realDim + i);
-        }
-
-        MemT out = 0;
-#pragma unroll
-        for (int i = 0; i < kDimPerIter; ++i) {
-            out |= (x[i] << (i * 8));
-        }
-
-        p[d] = out;
-    }
-
-    inline __device__ void encodePartial(
-            void* data,
-            int vec,
-            int d,
-            int remaining,
-            float v[kDimPerIter]) const {
-        if (DimMultiple > 1) {
-            // should not be called
-            assert(false);
-        }
-
-        // otherwise does not need implementing
-    }
-
-    //
-    // interleaved code implementation
-    //
-    using EncodeT = uint8_t;
-    static constexpr int kEncodeBits = 8;
-
-    inline __device__ EncodeT encodeNew(int dim, float v) const {
-        return encodeHelper(v, dim);
-    }
-
-    inline __device__ float decodeNew(int dim, EncodeT v) const {
-        return decodeHelper(v, dim);
-    }
-
-    int bytesPerVec;
-
-    // gmem pointers
-    const float* vmin;
-    const float* vdiff;
-
-    // smem pointers (configured in the kernel)
-    float* smemVmin;
-    float* smemVdiff;
-};
-
-template <>
-struct Codec<ScalarQuantizer::QuantizerType::QT_8bit_direct, 1> {
-    /// How many dimensions per iteration we are handling for encoding or
-    /// decoding
-    static constexpr int kDimPerIter = 1;
-
-    Codec(int vecBytes) : bytesPerVec(vecBytes) {}
-
-    size_t getSmemSize(int dim) {
-        return 0;
-    }
-    inline __device__ void initKernel(float* smem, int dim) {}
-
-    inline __device__ void decode(void* data, int vec, int d, float* out)
-            const {
-        uint8_t* p = &((uint8_t*)data)[vec * bytesPerVec];
-        out[0] = (float)p[d];
-    }
-
-    inline __device__ float decodePartial(void* data, int vec, int d, int subD)
-            const {
-        // doesn't need implementing (kDimPerIter == 1)
-        return 0.0f;
-    }
-
-    inline __device__ void encode(
-            void* data,
-            int vec,
-            int d,
-            float v[kDimPerIter]) const {
-        uint8_t* p = &((uint8_t*)data)[vec * bytesPerVec];
-        p[d] = (uint8_t)v[0];
-    }
-
-    inline __device__ void encodePartial(
-            void* data,
-            int vec,
-            int d,
-            int remaining,
-            float v[kDimPerIter]) const {
-        // doesn't need implementing (kDimPerIter == 1)
-    }
-
-    //
-    // interleaved code implementation
-    //
-    using EncodeT = uint8_t;
-    static constexpr int kEncodeBits = 8;
-
-    inline __device__ EncodeT encodeNew(int dim, float v) const {
-        return (uint8_t)v;
-    }
-
-    inline __device__ float decodeNew(int dim, EncodeT v) const {
-        return (float)v;
-    }
-
-    int bytesPerVec;
-};
-
-/////
-//
-// 6 bit encodings
-//
-/////
-
-template <>
-struct Codec<ScalarQuantizer::QuantizerType::QT_6bit, 1> {
-    Codec(int vecBytes, float* min, float* diff)
-            : bytesPerVec(vecBytes),
-              vmin(min),
-              vdiff(diff),
-              smemVmin(nullptr),
-              smemVdiff(nullptr) {}
-
-    size_t getSmemSize(int dim) {
-        return sizeof(float) * dim * 2;
-    }
-
-    // Initialize shared memory and local storage
-    // It is up to the user to call a trailing syncthreads (after any other
-    // initialization required has been done)
-    inline __device__ void initKernel(float* smem, int dim) {
-        smemVmin = smem;
-        smemVdiff = smem + dim;
-
-        for (int i = threadIdx.x; i < dim; i += blockDim.x) {
-            // We are performing vmin + vdiff * (v + 0.5) / (2^bits - 1)
-            // This can be simplified to vmin' + vdiff' * v where:
-            // vdiff' = vdiff / (2^bits - 1)
-            // vmin' = vmin + 0.5 * vdiff'
-            auto vd = vdiff[i] * (1.0f / 63.0f);
-            smemVmin[i] = vmin[i] + 0.5f * vd;
-            smemVdiff[i] = vd;
-        }
-    }
-
-    inline __device__ float decodeHelper(uint8_t v, int realDim) const {
-        return smemVmin[realDim] + (float)v * smemVdiff[realDim];
-    }
-
-    inline __device__ uint8_t encodeHelper(float v, int realDim) const {
-        float x = (v - vmin[realDim]) / vdiff[realDim];
-        x = fminf(1.0f, fmaxf(0.0f, x));
-        return (uint8_t)(x * 63.0f);
-    }
-
-    //
-    // interleaved code implementation
-    //
-    using EncodeT = uint8_t;
-    static constexpr int kEncodeBits = 6;
-
-    inline __device__ EncodeT encodeNew(int dim, float v) const {
-        return encodeHelper(v, dim);
-    }
-
-    inline __device__ float decodeNew(int dim, EncodeT v) const {
-        return decodeHelper(v, dim);
-    }
-
-    int bytesPerVec;
-
-    // gmem pointers
-    const float* vmin;
-    const float* vdiff;
-
-    // smem pointers
-    float* smemVmin;
-    float* smemVdiff;
-};
-
-/////
-//
-// 4 bit encodings
-//
-/////
-
-// Uniform quantization across all dimensions
-template <>
-struct Codec<ScalarQuantizer::QuantizerType::QT_4bit_uniform, 1> {
-    /// How many dimensions per iteration we are handling for encoding or
-    /// decoding
-    static constexpr int kDimPerIter = 2;
-
-    Codec(int vecBytes, float min, float diff)
-            : bytesPerVec(vecBytes), vmin(min), vdiff(diff) {}
-
-    size_t getSmemSize(int dim) {
-        return 0;
-    }
-    inline __device__ void initKernel(float* smem, int dim) {
-        // We are performing vmin + vdiff * (v + 0.5) / (2^bits - 1)
-        // This can be simplified to vmin' + vdiff' * v where:
-        // vdiff' = vdiff / (2^bits - 1)
-        // vmin' = vmin + 0.5 * vdiff'
-        auto vd = vdiff * (1.0f / 15.0f);
-        vmin = vmin + 0.5f * vd;
-        vdiff = vd;
-    }
-
-    inline __device__ float decodeHelper(uint8_t v) const {
-        return vmin + (float)v * vdiff;
-    }
-
-    inline __device__ void decode(void* data, int vec, int d, float* out)
-            const {
-        uint8_t* p = &((uint8_t*)data)[vec * bytesPerVec];
-        uint8_t pv = p[d];
-
-        out[0] = decodeHelper(pv & 0xf);
-        out[1] = decodeHelper(pv >> 4);
-    }
-
-    inline __device__ float decodePartial(
-            void* data,
-            int vec,
-            int d,
-            int subD /* unused */) const {
-        // We can only be called for a single input
-        uint8_t* p = &((uint8_t*)data)[vec * bytesPerVec];
-        uint8_t pv = p[d];
-
-        return decodeHelper(pv & 0xf);
-    }
-
-    inline __device__ uint8_t encodeHelper(float v) const {
-        float x = (v - vmin) / vdiff;
-        x = fminf(1.0f, fmaxf(0.0f, x));
-        return (uint8_t)(x * 15.0f);
-    }
-
-    inline __device__ void encode(
-            void* data,
-            int vec,
-            int d,
-            float v[kDimPerIter]) const {
-        uint8_t* p = &((uint8_t*)data)[vec * bytesPerVec];
-        p[d] = encodeHelper(v[0]) | (encodeHelper(v[1]) << 4);
-    }
-
-    inline __device__ void encodePartial(
-            void* data,
-            int vec,
-            int d,
-            int remaining, /* unused */
-            float v[kDimPerIter]) const {
-        // We can only be called for a single output
-        uint8_t* p = &((uint8_t*)data)[vec * bytesPerVec];
-        p[d] = encodeHelper(v[0]);
-    }
-
-    //
-    // interleaved code implementation
-    //
-    using EncodeT = uint8_t;
-    static constexpr int kEncodeBits = 4;
-
-    inline __device__ EncodeT encodeNew(int dim, float v) const {
-        return encodeHelper(v);
-    }
-
-    inline __device__ float decodeNew(int dim, EncodeT v) const {
-        return decodeHelper(v);
-    }
-
-    int bytesPerVec;
-    float vmin;
-    float vdiff;
-};
-
-template <>
-struct Codec<ScalarQuantizer::QuantizerType::QT_4bit, 1> {
-    /// How many dimensions per iteration we are handling for encoding or
-    /// decoding
-    static constexpr int kDimPerIter = 2;
-
-    Codec(int vecBytes, float* min, float* diff)
-            : bytesPerVec(vecBytes),
-              vmin(min),
-              vdiff(diff),
-              smemVmin(nullptr),
-              smemVdiff(nullptr) {}
-
-    size_t getSmemSize(int dim) {
-        return sizeof(float) * dim * 2;
-    }
-
-    inline __device__ void initKernel(float* smem, int dim) {
-        smemVmin = smem;
-        smemVdiff = smem + dim;
-
-        for (int i = threadIdx.x; i < dim; i += blockDim.x) {
-            // We are performing vmin + vdiff * (v + 0.5) / (2^bits - 1)
-            // This can be simplified to vmin' + vdiff' * v where:
-            // vdiff' = vdiff / (2^bits - 1)
-            // vmin' = vmin + 0.5 * vdiff'
-            auto vd = vdiff[i] / 15.0f;
-            smemVmin[i] = vmin[i] + 0.5f * vd;
-            smemVdiff[i] = vd;
-        }
-
-        __syncthreads();
-    }
-
-    inline __device__ float decodeHelper(uint8_t v, int realDim) const {
-        return smemVmin[realDim] + (float)v * smemVdiff[realDim];
-    }
-
-    inline __device__ void decode(void* data, int vec, int d, float* out)
-            const {
-        uint8_t* p = &((uint8_t*)data)[vec * bytesPerVec];
-        uint8_t pv = p[d];
-        int realDim = d * kDimPerIter;
-
-        out[0] = decodeHelper(pv & 0xf, realDim);
-        out[1] = decodeHelper(pv >> 4, realDim + 1);
-    }
-
-    inline __device__ float decodePartial(
-            void* data,
-            int vec,
-            int d,
-            int subD /* unused */) const {
-        // We can only be called for a single input
-        uint8_t* p = &((uint8_t*)data)[vec * bytesPerVec];
-        uint8_t pv = p[d];
-        int realDim = d * kDimPerIter;
-
-        return decodeHelper(pv & 0xf, realDim);
-    }
-
-    inline __device__ uint8_t encodeHelper(float v, int realDim) const {
-        float x = (v - vmin[realDim]) / vdiff[realDim];
-        x = fminf(1.0f, fmaxf(0.0f, x));
-        return (uint8_t)(x * 15.0f);
-    }
-
-    inline __device__ void encode(
-            void* data,
-            int vec,
-            int d,
-            float v[kDimPerIter]) const {
-        uint8_t* p = &((uint8_t*)data)[vec * bytesPerVec];
-        int realDim = d * kDimPerIter;
-        p[d] = encodeHelper(v[0], realDim) |
-                (encodeHelper(v[1], realDim + 1) << 4);
-    }
-
-    inline __device__ void encodePartial(
-            void* data,
-            int vec,
-            int d,
-            int remaining, /* unused */
-            float v[kDimPerIter]) const {
-        // We can only be called for a single output
-        uint8_t* p = &((uint8_t*)data)[vec * bytesPerVec];
-        int realDim = d * kDimPerIter;
-
-        p[d] = encodeHelper(v[0], realDim);
-    }
-
-    //
-    // interleaved code implementation
-    //
-    using EncodeT = uint8_t;
-    static constexpr int kEncodeBits = 4;
-
-    inline __device__ EncodeT encodeNew(int dim, float v) const {
-        return encodeHelper(v, dim);
-    }
-
-    inline __device__ float decodeNew(int dim, EncodeT v) const {
-        return decodeHelper(v, dim);
-    }
-
-    int bytesPerVec;
-
-    // gmem pointers
-    const float* vmin;
-    const float* vdiff;
-
-    // smem pointers
-    float* smemVmin;
-    float* smemVdiff;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFAppend.cu b/faiss/gpu_cuda/impl/IVFAppend.cu
deleted file mode 100644
index c345faf5268288848e4341c0766efb98976d8381..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFAppend.cu
+++ /dev/null
@@ -1,641 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/impl/FaissAssert.h>
-#include <faiss/gpu/impl/IVFAppend.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-#include <faiss/gpu/utils/PtxUtils.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-#include <faiss/gpu/utils/WarpPackedBits.cuh>
-#include <faiss/gpu/utils/WarpShuffles.cuh>
-
-#include <algorithm>
-
-namespace faiss {
-namespace gpu {
-
-//
-// IVF list metadata aupdate
-//
-
-// Updates the device-size array of list start pointers for codes and indices
-__global__ void runUpdateListPointers(
-        Tensor<int, 1, true> listIds,
-        Tensor<int, 1, true> newListLength,
-        Tensor<void*, 1, true> newCodePointers,
-        Tensor<void*, 1, true> newIndexPointers,
-        int* listLengths,
-        void** listCodes,
-        void** listIndices) {
-    int i = blockIdx.x * blockDim.x + threadIdx.x;
-
-    if (i < listIds.getSize(0)) {
-        int listId = listIds[i];
-        listLengths[listId] = newListLength[i];
-        listCodes[listId] = newCodePointers[i];
-        listIndices[listId] = newIndexPointers[i];
-    }
-}
-
-void runUpdateListPointers(
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& newListLength,
-        Tensor<void*, 1, true>& newCodePointers,
-        Tensor<void*, 1, true>& newIndexPointers,
-        thrust::device_vector<int>& listLengths,
-        thrust::device_vector<void*>& listCodes,
-        thrust::device_vector<void*>& listIndices,
-        cudaStream_t stream) {
-    int numThreads = std::min(listIds.getSize(0), getMaxThreadsCurrentDevice());
-    int numBlocks = utils::divUp(listIds.getSize(0), numThreads);
-
-    dim3 grid(numBlocks);
-    dim3 block(numThreads);
-
-    runUpdateListPointers<<<grid, block, 0, stream>>>(
-            listIds,
-            newListLength,
-            newCodePointers,
-            newIndexPointers,
-            listLengths.data().get(),
-            listCodes.data().get(),
-            listIndices.data().get());
-
-    CUDA_TEST_ERROR();
-}
-
-// Appends new indices for vectors being added to the IVF indices lists
-__global__ void ivfIndicesAppend(
-        Tensor<int, 1, true> listIds,
-        Tensor<int, 1, true> listOffset,
-        Tensor<Index::idx_t, 1, true> indices,
-        IndicesOptions opt,
-        void** listIndices) {
-    int vec = blockIdx.x * blockDim.x + threadIdx.x;
-
-    if (vec >= listIds.getSize(0)) {
-        return;
-    }
-
-    int listId = listIds[vec];
-    int offset = listOffset[vec];
-
-    // Add vector could be invalid (contains NaNs etc)
-    if (listId == -1 || offset == -1) {
-        return;
-    }
-
-    auto index = indices[vec];
-
-    if (opt == INDICES_32_BIT) {
-        // FIXME: there could be overflow here, but where should we check this?
-        ((int*)listIndices[listId])[offset] = (int)index;
-    } else if (opt == INDICES_64_BIT) {
-        ((Index::idx_t*)listIndices[listId])[offset] = index;
-    }
-}
-
-void runIVFIndicesAppend(
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& listOffset,
-        Tensor<Index::idx_t, 1, true>& indices,
-        IndicesOptions opt,
-        thrust::device_vector<void*>& listIndices,
-        cudaStream_t stream) {
-    FAISS_ASSERT(
-            opt == INDICES_CPU || opt == INDICES_IVF || opt == INDICES_32_BIT ||
-            opt == INDICES_64_BIT);
-
-    if (opt != INDICES_CPU && opt != INDICES_IVF) {
-        int num = listIds.getSize(0);
-        int threads = std::min(num, getMaxThreadsCurrentDevice());
-        int blocks = utils::divUp(num, threads);
-
-        ivfIndicesAppend<<<blocks, threads, 0, stream>>>(
-                listIds, listOffset, indices, opt, listIndices.data().get());
-
-        CUDA_TEST_ERROR();
-    }
-}
-
-//
-// IVF non-interleaved append
-//
-
-template <typename Codec>
-__global__ void ivfFlatAppend(
-        Tensor<int, 1, true> listIds,
-        Tensor<int, 1, true> listOffset,
-        Tensor<float, 2, true> vecs,
-        void** listData,
-        Codec codec) {
-    int vec = blockIdx.x;
-
-    int listId = listIds[vec];
-    int offset = listOffset[vec];
-
-    // Add vector could be invalid (contains NaNs etc)
-    if (listId == -1 || offset == -1) {
-        return;
-    }
-
-    // Handle whole encoding (only thread 0 will handle the remainder)
-    int limit = utils::divDown(vecs.getSize(1), Codec::kDimPerIter);
-
-    int i;
-    for (i = threadIdx.x; i < limit; i += blockDim.x) {
-        int realDim = i * Codec::kDimPerIter;
-        float toEncode[Codec::kDimPerIter];
-
-#pragma unroll
-        for (int j = 0; j < Codec::kDimPerIter; ++j) {
-            toEncode[j] = vecs[vec][realDim + j];
-        }
-
-        codec.encode(listData[listId], offset, i, toEncode);
-    }
-
-    // Handle remainder with a single thread, if any
-    if (Codec::kDimPerIter > 1) {
-        int realDim = limit * Codec::kDimPerIter;
-
-        // Was there any remainder?
-        if (realDim < vecs.getSize(1)) {
-            if (threadIdx.x == 0) {
-                float toEncode[Codec::kDimPerIter];
-
-                // How many remaining that we need to encode
-                int remaining = vecs.getSize(1) - realDim;
-
-#pragma unroll
-                for (int j = 0; j < Codec::kDimPerIter; ++j) {
-                    int idx = realDim + j;
-                    toEncode[j] = idx < vecs.getSize(1) ? vecs[vec][idx] : 0.0f;
-                }
-
-                codec.encodePartial(
-                        listData[listId], offset, i, remaining, toEncode);
-            }
-        }
-    }
-}
-
-void runIVFFlatAppend(
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& listOffset,
-        Tensor<float, 2, true>& vecs,
-        GpuScalarQuantizer* scalarQ,
-        thrust::device_vector<void*>& listData,
-        cudaStream_t stream) {
-    int dim = vecs.getSize(1);
-    int maxThreads = getMaxThreadsCurrentDevice();
-
-    // Each block will handle appending a single vector
-#define RUN_APPEND                                                        \
-    do {                                                                  \
-        dim3 grid(vecs.getSize(0));                                       \
-        dim3 block(std::min(dim / codec.kDimPerIter, maxThreads));        \
-        ivfFlatAppend<<<grid, block, 0, stream>>>(                        \
-                listIds, listOffset, vecs, listData.data().get(), codec); \
-    } while (0)
-
-    if (!scalarQ) {
-        CodecFloat codec(dim * sizeof(float));
-        RUN_APPEND;
-    } else {
-        switch (scalarQ->qtype) {
-            case ScalarQuantizer::QuantizerType::QT_8bit: {
-                Codec<ScalarQuantizer::QuantizerType::QT_8bit, 1> codec(
-                        scalarQ->code_size,
-                        scalarQ->gpuTrained.data(),
-                        scalarQ->gpuTrained.data() + dim);
-                RUN_APPEND;
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_8bit_uniform: {
-                Codec<ScalarQuantizer::QuantizerType::QT_8bit_uniform, 1> codec(
-                        scalarQ->code_size,
-                        scalarQ->trained[0],
-                        scalarQ->trained[1]);
-                RUN_APPEND;
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_fp16: {
-                Codec<ScalarQuantizer::QuantizerType::QT_fp16, 1> codec(
-                        scalarQ->code_size);
-                RUN_APPEND;
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_8bit_direct: {
-                Codec<ScalarQuantizer::QuantizerType::QT_8bit_direct, 1> codec(
-                        scalarQ->code_size);
-                RUN_APPEND;
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_4bit: {
-                Codec<ScalarQuantizer::QuantizerType::QT_4bit, 1> codec(
-                        scalarQ->code_size,
-                        scalarQ->gpuTrained.data(),
-                        scalarQ->gpuTrained.data() + dim);
-                RUN_APPEND;
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_4bit_uniform: {
-                Codec<ScalarQuantizer::QuantizerType::QT_4bit_uniform, 1> codec(
-                        scalarQ->code_size,
-                        scalarQ->trained[0],
-                        scalarQ->trained[1]);
-                RUN_APPEND;
-            } break;
-            default:
-                // unimplemented, should be handled at a higher level
-                FAISS_ASSERT(false);
-        }
-    }
-
-    CUDA_TEST_ERROR();
-
-#undef RUN_APPEND
-}
-
-__global__ void ivfpqAppend(
-        Tensor<int, 1, true> listIds,
-        Tensor<int, 1, true> listOffset,
-        Tensor<uint8_t, 2, true> encodings,
-        void** listCodes) {
-    int encodingToAdd = blockIdx.x * blockDim.x + threadIdx.x;
-
-    if (encodingToAdd >= listIds.getSize(0)) {
-        return;
-    }
-
-    int listId = listIds[encodingToAdd];
-    int vectorNumInList = listOffset[encodingToAdd];
-
-    // Add vector could be invalid (contains NaNs etc)
-    if (listId == -1 || vectorNumInList == -1) {
-        return;
-    }
-
-    auto encoding = encodings[encodingToAdd];
-
-    // Layout with dimensions innermost
-    uint8_t* codeStart = ((uint8_t*)listCodes[listId]) +
-            vectorNumInList * encodings.getSize(1);
-
-    // FIXME: stride with threads instead of single thread
-    for (int i = 0; i < encodings.getSize(1); ++i) {
-        codeStart[i] = encoding[i];
-    }
-}
-
-void runIVFPQAppend(
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& listOffset,
-        Tensor<uint8_t, 2, true>& encodings,
-        thrust::device_vector<void*>& listCodes,
-        cudaStream_t stream) {
-    int threads = std::min(listIds.getSize(0), getMaxThreadsCurrentDevice());
-    int blocks = utils::divUp(listIds.getSize(0), threads);
-
-    ivfpqAppend<<<threads, blocks, 0, stream>>>(
-            listIds, listOffset, encodings, listCodes.data().get());
-
-    CUDA_TEST_ERROR();
-}
-
-//
-// IVF interleaved append
-//
-
-// Scalar encode a vector to Codec::EncodeT word-sized values; previously this
-// was fused into a single append kernel but was refactored so that Flat, SQ and
-// PQ all use the same arbitrary bitwidth append kernel
-template <typename Codec>
-__global__ void sqEncode(
-        Tensor<float, 2, true> vecs,
-        Tensor<typename Codec::EncodeT, 2, true> encodedVecs,
-        Codec codec) {
-    int vec = blockIdx.x;
-
-    for (int d = threadIdx.x; d < vecs.getSize(1); d += blockDim.x) {
-        encodedVecs[vec][d] = codec.encodeNew(d, vecs[vec][d]);
-    }
-}
-
-template <typename Codec>
-void runSQEncode(
-        Tensor<float, 2, true>& vecs,
-        Tensor<typename Codec::EncodeT, 2, true>& encodedVecs,
-        Codec codec,
-        cudaStream_t stream) {
-    int threads = std::min(vecs.getSize(1), getMaxThreadsCurrentDevice());
-    int blocks = vecs.getSize(0);
-
-    sqEncode<<<blocks, threads, 0, stream>>>(vecs, encodedVecs, codec);
-}
-
-// Handles appending encoded vectors (one per EncodeT word) packed into
-// EncodeBits interleaved by 32 vectors.
-// This is used by Flat, SQ and PQ code for the interleaved format.
-template <typename EncodeT, int EncodeBits>
-__global__ void ivfInterleavedAppend(
-        // the IDs (offset in listData) of the unique lists
-        // being added to
-        Tensor<int, 1, true> uniqueLists,
-        // For each of the list IDs in uniqueLists, the start
-        // offset in vectorsByUniqueList for the vectors that
-        // we are adding to that list
-        Tensor<int, 1, true> uniqueListVectorStart,
-        // IDs in vecs of the vectors being added to each
-        // unique list
-        // The vectors (offset in vecs) added to
-        // uniqueLists[i] is:
-        // {vBUL[uLVS[i]], ..., vBUL[uLVS[i+1] - 1]}
-        Tensor<int, 1, true> vectorsByUniqueList,
-        // For each of the list IDs in uniqueLists, the start
-        // offset (by vector) within that list where we begin
-        // appending
-        Tensor<int, 1, true> uniqueListStartOffset,
-        // The EncodeT-sized encoded vectors
-        Tensor<EncodeT, 2, true> encodedVecs,
-        // The set of addresses for each of the lists
-        void** listData) {
-    // FIXME: some issue with getLaneId() and CUDA 10.1 and P4 GPUs?
-    int laneId = threadIdx.x % kWarpSize;
-    int warpId = threadIdx.x / kWarpSize;
-    int warpsPerBlock = blockDim.x / kWarpSize;
-
-    // Each block is dedicated to a separate list
-    int listId = uniqueLists[blockIdx.x];
-
-    // The vecs we add to the list are at indices [vBUL[vecIdStart],
-    // vBUL[vecIdEnd])
-    int vecIdStart = uniqueListVectorStart[blockIdx.x];
-    // uLVS is explicitly terminated for us with one more than the number of
-    // blocks that we have
-    int vecIdEnd = uniqueListVectorStart[blockIdx.x + 1];
-
-    // How many vectors we are adding to this list
-    int numVecsAdding = vecIdEnd - vecIdStart;
-
-    // The first vector we are updating within the list
-    auto listVecStart = uniqueListStartOffset[blockIdx.x];
-
-    // These are the actual vec IDs that we are adding (in vecs)
-    int* listVecIds = vectorsByUniqueList[vecIdStart].data();
-
-    // All data is written by groups of 32 vectors (to mirror the warp).
-    // listVecStart could be in the middle of this, or even, for sub-byte
-    // encodings, mean that the first vector piece of data that we need to
-    // update is in the high part of a byte.
-    //
-    // WarpPackedBits allows writing of arbitrary bit packed data in groups of
-    // 32, but we ensure that it only operates on the group of 32 vectors. In
-    // order to do this we need to actually start updating vectors at the next
-    // lower multiple of 32 from listVecStart.
-    int alignedListVecStart = utils::roundDown(listVecStart, 32);
-
-    // Each block of 32 vectors fully encodes into this many bytes
-    constexpr int bytesPerVectorBlockDim = EncodeBits * 32 / 8;
-    constexpr int wordsPerVectorBlockDim =
-            bytesPerVectorBlockDim / sizeof(EncodeT);
-    int wordsPerVectorBlock = wordsPerVectorBlockDim * encodedVecs.getSize(1);
-
-    EncodeT* listStart = ((EncodeT*)listData[listId]);
-
-    // Each warp within the block handles a different chunk of 32
-    int warpVec = alignedListVecStart + warpId * 32;
-
-    // The warp data starts here
-    EncodeT* warpData = listStart + (warpVec / 32) * wordsPerVectorBlock;
-
-    // Each warp encodes a single block
-    for (; warpVec < listVecStart + numVecsAdding;
-         // but block stride
-         warpVec += blockDim.x,
-         // the new warp data base strides by how many vector blocks we are
-         // encoding, which is one per warp
-         warpData += warpsPerBlock * wordsPerVectorBlock) {
-        // This lane is adding this vec (if it is within bounds)
-        int laneVec = warpVec + laneId;
-
-        // Which vector does this correspond to in the set of vectors that we
-        // need to add? If this is < 0, then this particular thread is not
-        // encoding / appending a new vector
-        int laneVecAdding = laneVec - listVecStart;
-
-        // We are actually adding a new vector if this is within range
-        bool valid = laneVecAdding >= 0 && laneVecAdding < numVecsAdding;
-
-        // Now, which actual vector in vecs is this?
-        int vecId = valid ? listVecIds[laneVecAdding] : 0;
-
-        // Each warp that has some vector data available needs to write out the
-        // vector components
-        EncodeT* data = warpData;
-
-        for (int dim = 0; dim < encodedVecs.getSize(1); ++dim) {
-            EncodeT enc = valid ? encodedVecs[vecId][dim] : (EncodeT)0;
-            WarpPackedBits<EncodeT, EncodeBits>::write(
-                    laneId, enc, valid, data);
-
-            data += wordsPerVectorBlockDim;
-        }
-    }
-}
-
-void runIVFFlatInterleavedAppend(
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& listOffset,
-        Tensor<int, 1, true>& uniqueLists,
-        Tensor<int, 1, true>& vectorsByUniqueList,
-        Tensor<int, 1, true>& uniqueListVectorStart,
-        Tensor<int, 1, true>& uniqueListStartOffset,
-        Tensor<float, 2, true>& vecs,
-        GpuScalarQuantizer* scalarQ,
-        thrust::device_vector<void*>& listData,
-        GpuResources* res,
-        cudaStream_t stream) {
-    int dim = vecs.getSize(1);
-
-#define RUN_APPEND(ENCODE_T, ENCODE_BITS, DATA)     \
-    do {                                            \
-        dim3 grid(uniqueLists.getSize(0));          \
-        dim3 block(128);                            \
-        ivfInterleavedAppend<ENCODE_T, ENCODE_BITS> \
-                <<<grid, block, 0, stream>>>(       \
-                        uniqueLists,                \
-                        uniqueListVectorStart,      \
-                        vectorsByUniqueList,        \
-                        uniqueListStartOffset,      \
-                        DATA,                       \
-                        listData.data().get());     \
-    } while (0)
-
-    if (!scalarQ) {
-        // No encoding is needed, we just append directly
-        RUN_APPEND(float, 32, vecs);
-        return;
-    }
-
-    // only implemented at the moment
-    FAISS_ASSERT(scalarQ->bits == 16 || scalarQ->bits <= 8);
-
-    if (scalarQ->bits == 16) {
-        FAISS_ASSERT(scalarQ->qtype == ScalarQuantizer::QuantizerType::QT_fp16);
-
-        using CodecT = Codec<ScalarQuantizer::QuantizerType::QT_fp16, 1>;
-        CodecT codec(scalarQ->qtype);
-
-        DeviceTensor<half, 2, true> encodedVecs(
-                res,
-                makeTempAlloc(AllocType::Other, stream),
-                {vecs.getSize(0), vecs.getSize(1)});
-
-        runSQEncode(vecs, encodedVecs, codec, stream);
-        RUN_APPEND(CodecT::EncodeT, CodecT::kEncodeBits, encodedVecs);
-
-    } else if (scalarQ->bits <= 8) {
-        DeviceTensor<uint8_t, 2, true> encodedVecs(
-                res,
-                makeTempAlloc(AllocType::Other, stream),
-                {vecs.getSize(0), vecs.getSize(1)});
-
-        switch (scalarQ->qtype) {
-            case ScalarQuantizer::QuantizerType::QT_8bit: {
-                using CodecT =
-                        Codec<ScalarQuantizer::QuantizerType::QT_8bit, 1>;
-                CodecT codec(
-                        scalarQ->code_size,
-                        scalarQ->gpuTrained.data(),
-                        scalarQ->gpuTrained.data() + dim);
-
-                runSQEncode(vecs, encodedVecs, codec, stream);
-                RUN_APPEND(CodecT::EncodeT, CodecT::kEncodeBits, encodedVecs);
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_8bit_uniform: {
-                using CodecT =
-                        Codec<ScalarQuantizer::QuantizerType::QT_8bit_uniform,
-                              1>;
-                CodecT codec(
-                        scalarQ->code_size,
-                        scalarQ->trained[0],
-                        scalarQ->trained[1]);
-
-                runSQEncode(vecs, encodedVecs, codec, stream);
-                RUN_APPEND(CodecT::EncodeT, CodecT::kEncodeBits, encodedVecs);
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_8bit_direct: {
-                using CodecT =
-                        Codec<ScalarQuantizer::QuantizerType::QT_8bit_direct,
-                              1>;
-                CodecT codec(scalarQ->code_size);
-
-                runSQEncode(vecs, encodedVecs, codec, stream);
-                RUN_APPEND(CodecT::EncodeT, CodecT::kEncodeBits, encodedVecs);
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_6bit: {
-                using CodecT =
-                        Codec<ScalarQuantizer::QuantizerType::QT_6bit, 1>;
-                CodecT codec(
-                        scalarQ->code_size,
-                        scalarQ->gpuTrained.data(),
-                        scalarQ->gpuTrained.data() + dim);
-
-                runSQEncode(vecs, encodedVecs, codec, stream);
-                RUN_APPEND(CodecT::EncodeT, CodecT::kEncodeBits, encodedVecs);
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_4bit: {
-                using CodecT =
-                        Codec<ScalarQuantizer::QuantizerType::QT_4bit, 1>;
-                CodecT codec(
-                        scalarQ->code_size,
-                        scalarQ->gpuTrained.data(),
-                        scalarQ->gpuTrained.data() + dim);
-
-                runSQEncode(vecs, encodedVecs, codec, stream);
-                RUN_APPEND(CodecT::EncodeT, CodecT::kEncodeBits, encodedVecs);
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_4bit_uniform: {
-                using CodecT =
-                        Codec<ScalarQuantizer::QuantizerType::QT_4bit_uniform,
-                              1>;
-                CodecT codec(
-                        scalarQ->code_size,
-                        scalarQ->trained[0],
-                        scalarQ->trained[1]);
-
-                runSQEncode(vecs, encodedVecs, codec, stream);
-                RUN_APPEND(CodecT::EncodeT, CodecT::kEncodeBits, encodedVecs);
-            } break;
-            default:
-                // unimplemented, should be handled at a higher level
-                FAISS_ASSERT(false);
-        }
-    }
-
-#undef RUN_APPEND
-    CUDA_TEST_ERROR();
-}
-
-void runIVFPQInterleavedAppend(
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& listOffset,
-        Tensor<int, 1, true>& uniqueLists,
-        Tensor<int, 1, true>& vectorsByUniqueList,
-        Tensor<int, 1, true>& uniqueListVectorStart,
-        Tensor<int, 1, true>& uniqueListStartOffset,
-        int bitsPerCode,
-        Tensor<uint8_t, 2, true>& encodings,
-        thrust::device_vector<void*>& listCodes,
-        cudaStream_t stream) {
-    // limitation for now
-    FAISS_ASSERT(bitsPerCode <= 8);
-
-#define RUN_APPEND(ENCODE_T, ENCODE_BITS)           \
-    do {                                            \
-        dim3 grid(uniqueLists.getSize(0));          \
-        dim3 block(128);                            \
-                                                    \
-        ivfInterleavedAppend<ENCODE_T, ENCODE_BITS> \
-                <<<grid, block, 0, stream>>>(       \
-                        uniqueLists,                \
-                        uniqueListVectorStart,      \
-                        vectorsByUniqueList,        \
-                        uniqueListStartOffset,      \
-                        encodings,                  \
-                        listCodes.data().get());    \
-    } while (0)
-
-    switch (bitsPerCode) {
-        case 4: {
-            RUN_APPEND(uint8_t, 4);
-            break;
-        }
-        case 5: {
-            RUN_APPEND(uint8_t, 5);
-            break;
-        }
-        case 6: {
-            RUN_APPEND(uint8_t, 6);
-            break;
-        }
-        case 8: {
-            RUN_APPEND(uint8_t, 8);
-            break;
-        }
-        default:
-            // unhandled
-            FAISS_ASSERT(false);
-            break;
-    }
-
-#undef RUN_APPEND
-    CUDA_TEST_ERROR();
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFAppend.cuh b/faiss/gpu_cuda/impl/IVFAppend.cuh
deleted file mode 100644
index 9b17af1b299f4f184e5b5fc715b3854fea12bc10..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFAppend.cuh
+++ /dev/null
@@ -1,83 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/GpuIndicesOptions.h>
-#include <thrust/device_vector.h>
-#include <faiss/gpu/impl/GpuScalarQuantizer.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-/// Append user indices to IVF lists
-void runIVFIndicesAppend(
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& listOffset,
-        Tensor<Index::idx_t, 1, true>& indices,
-        IndicesOptions opt,
-        thrust::device_vector<void*>& listIndices,
-        cudaStream_t stream);
-
-/// Update device-side list pointers in a batch
-void runUpdateListPointers(
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& newListLength,
-        Tensor<void*, 1, true>& newCodePointers,
-        Tensor<void*, 1, true>& newIndexPointers,
-        thrust::device_vector<int>& listLengths,
-        thrust::device_vector<void*>& listCodes,
-        thrust::device_vector<void*>& listIndices,
-        cudaStream_t stream);
-
-/// Append PQ codes to IVF lists (non-interleaved format)
-void runIVFPQAppend(
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& listOffset,
-        Tensor<uint8_t, 2, true>& encodings,
-        thrust::device_vector<void*>& listCodes,
-        cudaStream_t stream);
-
-/// Append PQ codes to IVF lists (interleaved format)
-void runIVFPQInterleavedAppend(
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& listOffset,
-        Tensor<int, 1, true>& uniqueLists,
-        Tensor<int, 1, true>& vectorsByUniqueList,
-        Tensor<int, 1, true>& uniqueListVectorStart,
-        Tensor<int, 1, true>& uniqueListStartOffset,
-        int bitsPerCode,
-        Tensor<uint8_t, 2, true>& encodings,
-        thrust::device_vector<void*>& listCodes,
-        cudaStream_t stream);
-
-/// Append SQ codes to IVF lists (non-interleaved, old format)
-void runIVFFlatAppend(
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& listOffset,
-        Tensor<float, 2, true>& vecs,
-        GpuScalarQuantizer* scalarQ,
-        thrust::device_vector<void*>& listData,
-        cudaStream_t stream);
-
-/// Append SQ codes to IVF lists (interleaved)
-void runIVFFlatInterleavedAppend(
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& listOffset,
-        Tensor<int, 1, true>& uniqueLists,
-        Tensor<int, 1, true>& vectorsByUniqueList,
-        Tensor<int, 1, true>& uniqueListVectorStart,
-        Tensor<int, 1, true>& uniqueListStartOffset,
-        Tensor<float, 2, true>& vecs,
-        GpuScalarQuantizer* scalarQ,
-        thrust::device_vector<void*>& listData,
-        GpuResources* res,
-        cudaStream_t stream);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFBase.cu b/faiss/gpu_cuda/impl/IVFBase.cu
deleted file mode 100644
index c6797968ef0ac94bc16c8d5f86ed3b8a03ba61aa..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFBase.cu
+++ /dev/null
@@ -1,659 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/impl/RemapIndices.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/invlists/InvertedLists.h>
-#include <thrust/host_vector.h>
-#include <faiss/gpu/impl/FlatIndex.cuh>
-#include <faiss/gpu/impl/IVFAppend.cuh>
-#include <faiss/gpu/impl/IVFBase.cuh>
-#include <faiss/gpu/utils/CopyUtils.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-#include <limits>
-#include <unordered_map>
-
-namespace faiss {
-namespace gpu {
-
-IVFBase::DeviceIVFList::DeviceIVFList(GpuResources* res, const AllocInfo& info)
-        : data(res, info), numVecs(0) {}
-
-IVFBase::IVFBase(
-        GpuResources* resources,
-        faiss::MetricType metric,
-        float metricArg,
-        FlatIndex* quantizer,
-        bool interleavedLayout,
-        IndicesOptions indicesOptions,
-        MemorySpace space)
-        : resources_(resources),
-          metric_(metric),
-          metricArg_(metricArg),
-          quantizer_(quantizer),
-          dim_(quantizer->getDim()),
-          numLists_(quantizer->getSize()),
-          interleavedLayout_(interleavedLayout),
-          indicesOptions_(indicesOptions),
-          space_(space),
-          maxListLength_(0) {
-    reset();
-}
-
-IVFBase::~IVFBase() {}
-
-void IVFBase::reserveMemory(size_t numVecs) {
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    auto vecsPerList = numVecs / deviceListData_.size();
-    if (vecsPerList < 1) {
-        return;
-    }
-
-    auto bytesPerDataList = getGpuVectorsEncodingSize_(vecsPerList);
-
-    for (auto& list : deviceListData_) {
-        list->data.reserve(bytesPerDataList, stream);
-    }
-
-    if ((indicesOptions_ == INDICES_32_BIT) ||
-        (indicesOptions_ == INDICES_64_BIT)) {
-        // Reserve for index lists as well
-        size_t bytesPerIndexList = vecsPerList *
-                (indicesOptions_ == INDICES_32_BIT ? sizeof(int)
-                                                   : sizeof(Index::idx_t));
-
-        for (auto& list : deviceListIndices_) {
-            list->data.reserve(bytesPerIndexList, stream);
-        }
-    }
-
-    // Update device info for all lists, since the base pointers may
-    // have changed
-    updateDeviceListInfo_(stream);
-}
-
-void IVFBase::reset() {
-    deviceListData_.clear();
-    deviceListIndices_.clear();
-    deviceListDataPointers_.clear();
-    deviceListIndexPointers_.clear();
-    deviceListLengths_.clear();
-    listOffsetToUserIndex_.clear();
-
-    auto info = AllocInfo(
-            AllocType::IVFLists,
-            getCurrentDevice(),
-            space_,
-            resources_->getDefaultStreamCurrentDevice());
-
-    for (size_t i = 0; i < numLists_; ++i) {
-        deviceListData_.emplace_back(std::unique_ptr<DeviceIVFList>(
-                new DeviceIVFList(resources_, info)));
-
-        deviceListIndices_.emplace_back(std::unique_ptr<DeviceIVFList>(
-                new DeviceIVFList(resources_, info)));
-
-        listOffsetToUserIndex_.emplace_back(std::vector<Index::idx_t>());
-    }
-
-    deviceListDataPointers_.resize(numLists_, nullptr);
-    deviceListIndexPointers_.resize(numLists_, nullptr);
-    deviceListLengths_.resize(numLists_, 0);
-    maxListLength_ = 0;
-}
-
-int IVFBase::getDim() const {
-    return dim_;
-}
-
-size_t IVFBase::reclaimMemory() {
-    // Reclaim all unused memory exactly
-    return reclaimMemory_(true);
-}
-
-size_t IVFBase::reclaimMemory_(bool exact) {
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    size_t totalReclaimed = 0;
-
-    for (int i = 0; i < deviceListData_.size(); ++i) {
-        auto& data = deviceListData_[i]->data;
-        totalReclaimed += data.reclaim(exact, stream);
-
-        deviceListDataPointers_[i] = data.data();
-    }
-
-    for (int i = 0; i < deviceListIndices_.size(); ++i) {
-        auto& indices = deviceListIndices_[i]->data;
-        totalReclaimed += indices.reclaim(exact, stream);
-
-        deviceListIndexPointers_[i] = indices.data();
-    }
-
-    // Update device info for all lists, since the base pointers may
-    // have changed
-    updateDeviceListInfo_(stream);
-
-    return totalReclaimed;
-}
-
-void IVFBase::updateDeviceListInfo_(cudaStream_t stream) {
-    std::vector<int> listIds(deviceListData_.size());
-    for (int i = 0; i < deviceListData_.size(); ++i) {
-        listIds[i] = i;
-    }
-
-    updateDeviceListInfo_(listIds, stream);
-}
-
-void IVFBase::updateDeviceListInfo_(
-        const std::vector<int>& listIds,
-        cudaStream_t stream) {
-    HostTensor<int, 1, true> hostListsToUpdate({(int)listIds.size()});
-    HostTensor<int, 1, true> hostNewListLength({(int)listIds.size()});
-    HostTensor<void*, 1, true> hostNewDataPointers({(int)listIds.size()});
-    HostTensor<void*, 1, true> hostNewIndexPointers({(int)listIds.size()});
-
-    for (int i = 0; i < listIds.size(); ++i) {
-        auto listId = listIds[i];
-        auto& data = deviceListData_[listId];
-        auto& indices = deviceListIndices_[listId];
-
-        hostListsToUpdate[i] = listId;
-        hostNewListLength[i] = data->numVecs;
-        hostNewDataPointers[i] = data->data.data();
-        hostNewIndexPointers[i] = indices->data.data();
-    }
-
-    // Copy the above update sets to the GPU
-    DeviceTensor<int, 1, true> listsToUpdate(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            hostListsToUpdate);
-    DeviceTensor<int, 1, true> newListLength(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            hostNewListLength);
-    DeviceTensor<void*, 1, true> newDataPointers(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            hostNewDataPointers);
-    DeviceTensor<void*, 1, true> newIndexPointers(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            hostNewIndexPointers);
-
-    // Update all pointers to the lists on the device that may have
-    // changed
-    runUpdateListPointers(
-            listsToUpdate,
-            newListLength,
-            newDataPointers,
-            newIndexPointers,
-            deviceListLengths_,
-            deviceListDataPointers_,
-            deviceListIndexPointers_,
-            stream);
-}
-
-size_t IVFBase::getNumLists() const {
-    return numLists_;
-}
-
-int IVFBase::getListLength(int listId) const {
-    FAISS_THROW_IF_NOT_FMT(
-            listId < numLists_,
-            "IVF list %d is out of bounds (%d lists total)",
-            listId,
-            numLists_);
-    FAISS_ASSERT(listId < deviceListLengths_.size());
-    FAISS_ASSERT(listId < deviceListData_.size());
-
-    // LHS is the GPU resident value, RHS is the CPU resident value
-    FAISS_ASSERT(
-            deviceListLengths_[listId] == deviceListData_[listId]->numVecs);
-
-    return deviceListData_[listId]->numVecs;
-}
-
-std::vector<Index::idx_t> IVFBase::getListIndices(int listId) const {
-    FAISS_THROW_IF_NOT_FMT(
-            listId < numLists_,
-            "IVF list %d is out of bounds (%d lists total)",
-            listId,
-            numLists_);
-    FAISS_ASSERT(listId < deviceListData_.size());
-    FAISS_ASSERT(listId < deviceListLengths_.size());
-
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    if (indicesOptions_ == INDICES_32_BIT) {
-        // The data is stored as int32 on the GPU
-        FAISS_ASSERT(listId < deviceListIndices_.size());
-
-        auto intInd = deviceListIndices_[listId]->data.copyToHost<int>(stream);
-
-        std::vector<Index::idx_t> out(intInd.size());
-        for (size_t i = 0; i < intInd.size(); ++i) {
-            out[i] = (Index::idx_t)intInd[i];
-        }
-
-        return out;
-    } else if (indicesOptions_ == INDICES_64_BIT) {
-        // The data is stored as int64 on the GPU
-        FAISS_ASSERT(listId < deviceListIndices_.size());
-
-        return deviceListIndices_[listId]->data.copyToHost<Index::idx_t>(
-                stream);
-    } else if (indicesOptions_ == INDICES_CPU) {
-        // The data is not stored on the GPU
-        FAISS_ASSERT(listId < listOffsetToUserIndex_.size());
-
-        auto& userIds = listOffsetToUserIndex_[listId];
-
-        // We should have the same number of indices on the CPU as we do vectors
-        // encoded on the GPU
-        FAISS_ASSERT(userIds.size() == deviceListData_[listId]->numVecs);
-
-        // this will return a copy
-        return userIds;
-    } else {
-        // unhandled indices type (includes INDICES_IVF)
-        FAISS_ASSERT(false);
-        return std::vector<Index::idx_t>();
-    }
-}
-
-std::vector<uint8_t> IVFBase::getListVectorData(int listId, bool gpuFormat)
-        const {
-    FAISS_THROW_IF_NOT_FMT(
-            listId < numLists_,
-            "IVF list %d is out of bounds (%d lists total)",
-            listId,
-            numLists_);
-    FAISS_ASSERT(listId < deviceListData_.size());
-    FAISS_ASSERT(listId < deviceListLengths_.size());
-
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    auto& list = deviceListData_[listId];
-    auto gpuCodes = list->data.copyToHost<uint8_t>(stream);
-
-    if (gpuFormat) {
-        return gpuCodes;
-    } else {
-        // The GPU layout may be different than the CPU layout (e.g., vectors
-        // rather than dimensions interleaved), translate back if necessary
-        return translateCodesFromGpu_(std::move(gpuCodes), list->numVecs);
-    }
-}
-
-void IVFBase::copyInvertedListsFrom(const InvertedLists* ivf) {
-    size_t nlist = ivf ? ivf->nlist : 0;
-    for (size_t i = 0; i < nlist; ++i) {
-        size_t listSize = ivf->list_size(i);
-
-        // GPU index can only support max int entries per list
-        FAISS_THROW_IF_NOT_FMT(
-                listSize <= (size_t)std::numeric_limits<int>::max(),
-                "GPU inverted list can only support "
-                "%zu entries; %zu found",
-                (size_t)std::numeric_limits<int>::max(),
-                listSize);
-
-        addEncodedVectorsToList_(
-                i, ivf->get_codes(i), ivf->get_ids(i), listSize);
-    }
-}
-
-void IVFBase::copyInvertedListsTo(InvertedLists* ivf) {
-    for (int i = 0; i < numLists_; ++i) {
-        auto listIndices = getListIndices(i);
-        auto listData = getListVectorData(i, false);
-
-        ivf->add_entries(
-                i, listIndices.size(), listIndices.data(), listData.data());
-    }
-}
-
-void IVFBase::addEncodedVectorsToList_(
-        int listId,
-        const void* codes,
-        const Index::idx_t* indices,
-        size_t numVecs) {
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    // This list must already exist
-    FAISS_ASSERT(listId < deviceListData_.size());
-
-    // This list must currently be empty
-    auto& listCodes = deviceListData_[listId];
-    FAISS_ASSERT(listCodes->data.size() == 0);
-    FAISS_ASSERT(listCodes->numVecs == 0);
-
-    // If there's nothing to add, then there's nothing we have to do
-    if (numVecs == 0) {
-        return;
-    }
-
-    // The GPU might have a different layout of the memory
-    auto gpuListSizeInBytes = getGpuVectorsEncodingSize_(numVecs);
-    auto cpuListSizeInBytes = getCpuVectorsEncodingSize_(numVecs);
-
-    // We only have int32 length representaz3tions on the GPU per each
-    // list; the length is in sizeof(char)
-    FAISS_ASSERT(gpuListSizeInBytes <= (size_t)std::numeric_limits<int>::max());
-
-    // Translate the codes as needed to our preferred form
-    std::vector<uint8_t> codesV(cpuListSizeInBytes);
-    std::memcpy(codesV.data(), codes, cpuListSizeInBytes);
-    auto translatedCodes = translateCodesToGpu_(std::move(codesV), numVecs);
-
-    listCodes->data.append(
-            translatedCodes.data(),
-            gpuListSizeInBytes,
-            stream,
-            true /* exact reserved size */);
-    listCodes->numVecs = numVecs;
-
-    // Handle the indices as well
-    addIndicesFromCpu_(listId, indices, numVecs);
-
-    deviceListDataPointers_[listId] = listCodes->data.data();
-    deviceListLengths_[listId] = numVecs;
-
-    // We update this as well, since the multi-pass algorithm uses it
-    maxListLength_ = std::max(maxListLength_, (int)numVecs);
-
-    // device_vector add is potentially happening on a different stream
-    // than our default stream
-    if (resources_->getDefaultStreamCurrentDevice() != 0) {
-        streamWait({stream}, {0});
-    }
-}
-
-void IVFBase::addIndicesFromCpu_(
-        int listId,
-        const Index::idx_t* indices,
-        size_t numVecs) {
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    // This list must currently be empty
-    auto& listIndices = deviceListIndices_[listId];
-    FAISS_ASSERT(listIndices->data.size() == 0);
-    FAISS_ASSERT(listIndices->numVecs == 0);
-
-    if (indicesOptions_ == INDICES_32_BIT) {
-        // Make sure that all indices are in bounds
-        std::vector<int> indices32(numVecs);
-        for (size_t i = 0; i < numVecs; ++i) {
-            auto ind = indices[i];
-            FAISS_ASSERT(ind <= (Index::idx_t)std::numeric_limits<int>::max());
-            indices32[i] = (int)ind;
-        }
-
-        static_assert(sizeof(int) == 4, "");
-
-        listIndices->data.append(
-                (uint8_t*)indices32.data(),
-                numVecs * sizeof(int),
-                stream,
-                true /* exact reserved size */);
-
-    } else if (indicesOptions_ == INDICES_64_BIT) {
-        listIndices->data.append(
-                (uint8_t*)indices,
-                numVecs * sizeof(Index::idx_t),
-                stream,
-                true /* exact reserved size */);
-    } else if (indicesOptions_ == INDICES_CPU) {
-        // indices are stored on the CPU
-        FAISS_ASSERT(listId < listOffsetToUserIndex_.size());
-
-        auto& userIndices = listOffsetToUserIndex_[listId];
-        userIndices.insert(userIndices.begin(), indices, indices + numVecs);
-    } else {
-        // indices are not stored
-        FAISS_ASSERT(indicesOptions_ == INDICES_IVF);
-    }
-
-    deviceListIndexPointers_[listId] = listIndices->data.data();
-}
-
-int IVFBase::addVectors(
-        Tensor<float, 2, true>& vecs,
-        Tensor<Index::idx_t, 1, true>& indices) {
-    FAISS_ASSERT(vecs.getSize(0) == indices.getSize(0));
-    FAISS_ASSERT(vecs.getSize(1) == dim_);
-
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    // Determine which IVF lists we need to append to
-
-    // We don't actually need this
-    DeviceTensor<float, 2, true> listDistance(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            {vecs.getSize(0), 1});
-    // We use this
-    DeviceTensor<int, 2, true> listIds2d(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            {vecs.getSize(0), 1});
-
-    quantizer_->query(
-            vecs, 1, metric_, metricArg_, listDistance, listIds2d, false);
-
-    // Copy the lists that we wish to append to back to the CPU
-    // FIXME: really this can be into pinned memory and a true async
-    // copy on a different stream; we can start the copy early, but it's
-    // tiny
-    auto listIdsHost = listIds2d.copyToVector(stream);
-
-    // Now we add the encoded vectors to the individual lists
-    // First, make sure that there is space available for adding the new
-    // encoded vectors and indices
-
-    // list id -> vectors being added
-    std::unordered_map<int, std::vector<int>> listToVectorIds;
-
-    // vector id -> which list it is being appended to
-    std::vector<int> vectorIdToList(vecs.getSize(0));
-
-    // vector id -> offset in list
-    // (we already have vector id -> list id in listIds)
-    std::vector<int> listOffsetHost(listIdsHost.size());
-
-    // Number of valid vectors that we actually add; we return this
-    int numAdded = 0;
-
-    for (int i = 0; i < listIdsHost.size(); ++i) {
-        int listId = listIdsHost[i];
-
-        // Add vector could be invalid (contains NaNs etc)
-        if (listId < 0) {
-            listOffsetHost[i] = -1;
-            vectorIdToList[i] = -1;
-            continue;
-        }
-
-        FAISS_ASSERT(listId < numLists_);
-        ++numAdded;
-        vectorIdToList[i] = listId;
-
-        int offset = deviceListData_[listId]->numVecs;
-
-        auto it = listToVectorIds.find(listId);
-        if (it != listToVectorIds.end()) {
-            offset += it->second.size();
-            it->second.push_back(i);
-        } else {
-            listToVectorIds[listId] = std::vector<int>{i};
-        }
-
-        listOffsetHost[i] = offset;
-    }
-
-    // If we didn't add anything (all invalid vectors that didn't map to IVF
-    // clusters), no need to continue
-    if (numAdded == 0) {
-        return 0;
-    }
-
-    // unique lists being added to
-    std::vector<int> uniqueLists;
-
-    for (auto& vecs : listToVectorIds) {
-        uniqueLists.push_back(vecs.first);
-    }
-
-    std::sort(uniqueLists.begin(), uniqueLists.end());
-
-    // In the same order as uniqueLists, list the vectors being added to that
-    // list contiguously (unique list 0 vectors ...)(unique list 1 vectors ...)
-    // ...
-    std::vector<int> vectorsByUniqueList;
-
-    // For each of the unique lists, the start offset in vectorsByUniqueList
-    std::vector<int> uniqueListVectorStart;
-
-    // For each of the unique lists, where we start appending in that list by
-    // the vector offset
-    std::vector<int> uniqueListStartOffset;
-
-    // For each of the unique lists, find the vectors which should be appended
-    // to that list
-    for (auto ul : uniqueLists) {
-        uniqueListVectorStart.push_back(vectorsByUniqueList.size());
-
-        FAISS_ASSERT(listToVectorIds.count(ul) != 0);
-
-        // The vectors we are adding to this list
-        auto& vecs = listToVectorIds[ul];
-        vectorsByUniqueList.insert(
-                vectorsByUniqueList.end(), vecs.begin(), vecs.end());
-
-        // How many vectors we previously had (which is where we start appending
-        // on the device)
-        uniqueListStartOffset.push_back(deviceListData_[ul]->numVecs);
-    }
-
-    // We terminate uniqueListVectorStart with the overall number of vectors
-    // being added, which could be different than vecs.getSize(0) as some
-    // vectors could be invalid
-    uniqueListVectorStart.push_back(vectorsByUniqueList.size());
-
-    // We need to resize the data structures for the inverted lists on
-    // the GPUs, which means that they might need reallocation, which
-    // means that their base address may change. Figure out the new base
-    // addresses, and update those in a batch on the device
-    {
-        // Resize all of the lists that we are appending to
-        for (auto& counts : listToVectorIds) {
-            auto listId = counts.first;
-            int numVecsToAdd = counts.second.size();
-
-            auto& codes = deviceListData_[listId];
-            int oldNumVecs = codes->numVecs;
-            int newNumVecs = codes->numVecs + numVecsToAdd;
-
-            auto newSizeBytes = getGpuVectorsEncodingSize_(newNumVecs);
-            codes->data.resize(newSizeBytes, stream);
-            codes->numVecs = newNumVecs;
-
-            auto& indices = deviceListIndices_[listId];
-            if ((indicesOptions_ == INDICES_32_BIT) ||
-                (indicesOptions_ == INDICES_64_BIT)) {
-                size_t indexSize = (indicesOptions_ == INDICES_32_BIT)
-                        ? sizeof(int)
-                        : sizeof(Index::idx_t);
-
-                indices->data.resize(
-                        indices->data.size() + numVecsToAdd * indexSize,
-                        stream);
-                FAISS_ASSERT(indices->numVecs == oldNumVecs);
-                indices->numVecs = newNumVecs;
-
-            } else if (indicesOptions_ == INDICES_CPU) {
-                // indices are stored on the CPU side
-                FAISS_ASSERT(listId < listOffsetToUserIndex_.size());
-
-                auto& userIndices = listOffsetToUserIndex_[listId];
-                userIndices.resize(newNumVecs);
-            } else {
-                // indices are not stored on the GPU or CPU side
-                FAISS_ASSERT(indicesOptions_ == INDICES_IVF);
-            }
-
-            // This is used by the multi-pass query to decide how much scratch
-            // space to allocate for intermediate results
-            maxListLength_ = std::max(maxListLength_, newNumVecs);
-        }
-
-        // Update all pointers and sizes on the device for lists that we
-        // appended to
-        updateDeviceListInfo_(uniqueLists, stream);
-    }
-
-    // If we're maintaining the indices on the CPU side, update our
-    // map. We already resized our map above.
-    if (indicesOptions_ == INDICES_CPU) {
-        // We need to maintain the indices on the CPU side
-        HostTensor<Index::idx_t, 1, true> hostIndices(indices, stream);
-
-        for (int i = 0; i < hostIndices.getSize(0); ++i) {
-            int listId = listIdsHost[i];
-
-            // Add vector could be invalid (contains NaNs etc)
-            if (listId < 0) {
-                continue;
-            }
-
-            int offset = listOffsetHost[i];
-            FAISS_ASSERT(offset >= 0);
-
-            FAISS_ASSERT(listId < listOffsetToUserIndex_.size());
-            auto& userIndices = listOffsetToUserIndex_[listId];
-
-            FAISS_ASSERT(offset < userIndices.size());
-            userIndices[offset] = hostIndices[i];
-        }
-    }
-
-    // Copy the offsets to the GPU
-    auto listIdsDevice = listIds2d.downcastOuter<1>();
-    auto listOffsetDevice =
-            toDeviceTemporary(resources_, listOffsetHost, stream);
-    auto uniqueListsDevice = toDeviceTemporary(resources_, uniqueLists, stream);
-    auto vectorsByUniqueListDevice =
-            toDeviceTemporary(resources_, vectorsByUniqueList, stream);
-    auto uniqueListVectorStartDevice =
-            toDeviceTemporary(resources_, uniqueListVectorStart, stream);
-    auto uniqueListStartOffsetDevice =
-            toDeviceTemporary(resources_, uniqueListStartOffset, stream);
-
-    // Actually encode and append the vectors
-    appendVectors_(
-            vecs,
-            indices,
-            uniqueListsDevice,
-            vectorsByUniqueListDevice,
-            uniqueListVectorStartDevice,
-            uniqueListStartOffsetDevice,
-            listIdsDevice,
-            listOffsetDevice,
-            stream);
-
-    // We added this number
-    return numAdded;
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFBase.cuh b/faiss/gpu_cuda/impl/IVFBase.cuh
deleted file mode 100644
index a46203293e03a96261f2ee082b124ba15eb75239..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFBase.cuh
+++ /dev/null
@@ -1,219 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/Index.h>
-#include <faiss/MetricType.h>
-#include <faiss/gpu/GpuIndicesOptions.h>
-#include <thrust/device_vector.h>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/DeviceVector.cuh>
-#include <memory>
-#include <vector>
-
-namespace faiss {
-struct InvertedLists;
-}
-
-namespace faiss {
-namespace gpu {
-
-class GpuResources;
-class FlatIndex;
-
-/// Base inverted list functionality for IVFFlat and IVFPQ
-class IVFBase {
-   public:
-    IVFBase(GpuResources* resources,
-            faiss::MetricType metric,
-            float metricArg,
-            /// We do not own this reference
-            FlatIndex* quantizer,
-            bool interleavedLayout,
-            IndicesOptions indicesOptions,
-            MemorySpace space);
-
-    virtual ~IVFBase();
-
-    /// Reserve GPU memory in our inverted lists for this number of vectors
-    void reserveMemory(size_t numVecs);
-
-    /// Clear out all inverted lists, but retain the coarse quantizer
-    /// and the product quantizer info
-    void reset();
-
-    /// Return the number of dimensions we are indexing
-    int getDim() const;
-
-    /// After adding vectors, one can call this to reclaim device memory
-    /// to exactly the amount needed. Returns space reclaimed in bytes
-    size_t reclaimMemory();
-
-    /// Returns the number of inverted lists
-    size_t getNumLists() const;
-
-    /// For debugging purposes, return the list length of a particular
-    /// list
-    int getListLength(int listId) const;
-
-    /// Return the list indices of a particular list back to the CPU
-    std::vector<Index::idx_t> getListIndices(int listId) const;
-
-    /// Return the encoded vectors of a particular list back to the CPU
-    std::vector<uint8_t> getListVectorData(int listId, bool gpuFormat) const;
-
-    /// Copy all inverted lists from a CPU representation to ourselves
-    void copyInvertedListsFrom(const InvertedLists* ivf);
-
-    /// Copy all inverted lists from ourselves to a CPU representation
-    void copyInvertedListsTo(InvertedLists* ivf);
-
-    /// Classify and encode/add vectors to our IVF lists.
-    /// The input data must be on our current device.
-    /// Returns the number of vectors successfully added. Vectors may
-    /// not be able to be added because they contain NaNs.
-    int addVectors(
-            Tensor<float, 2, true>& vecs,
-            Tensor<Index::idx_t, 1, true>& indices);
-
-   protected:
-    /// Adds a set of codes and indices to a list, with the representation
-    /// coming from the CPU equivalent
-    void addEncodedVectorsToList_(
-            int listId,
-            // resident on the host
-            const void* codes,
-            // resident on the host
-            const Index::idx_t* indices,
-            size_t numVecs);
-
-    /// Returns the number of bytes in which an IVF list containing numVecs
-    /// vectors is encoded on the device. Note that due to padding this is not
-    /// the same as the encoding size for a subset of vectors in an IVF list;
-    /// this is the size for an entire IVF list
-    virtual size_t getGpuVectorsEncodingSize_(int numVecs) const = 0;
-    virtual size_t getCpuVectorsEncodingSize_(int numVecs) const = 0;
-
-    /// Translate to our preferred GPU encoding
-    virtual std::vector<uint8_t> translateCodesToGpu_(
-            std::vector<uint8_t> codes,
-            size_t numVecs) const = 0;
-
-    /// Translate from our preferred GPU encoding
-    virtual std::vector<uint8_t> translateCodesFromGpu_(
-            std::vector<uint8_t> codes,
-            size_t numVecs) const = 0;
-
-    /// Append vectors to our on-device lists
-    virtual void appendVectors_(
-            Tensor<float, 2, true>& vecs,
-            Tensor<Index::idx_t, 1, true>& indices,
-            Tensor<int, 1, true>& uniqueLists,
-            Tensor<int, 1, true>& vectorsByUniqueList,
-            Tensor<int, 1, true>& uniqueListVectorStart,
-            Tensor<int, 1, true>& uniqueListStartOffset,
-            Tensor<int, 1, true>& listIds,
-            Tensor<int, 1, true>& listOffset,
-            cudaStream_t stream) = 0;
-
-    /// Reclaim memory consumed on the device for our inverted lists
-    /// `exact` means we trim exactly to the memory needed
-    size_t reclaimMemory_(bool exact);
-
-    /// Update all device-side list pointer and size information
-    void updateDeviceListInfo_(cudaStream_t stream);
-
-    /// For a set of list IDs, update device-side list pointer and size
-    /// information
-    void updateDeviceListInfo_(
-            const std::vector<int>& listIds,
-            cudaStream_t stream);
-
-    /// Shared function to copy indices from CPU to GPU
-    void addIndicesFromCpu_(
-            int listId,
-            const Index::idx_t* indices,
-            size_t numVecs);
-
-   protected:
-    /// Collection of GPU resources that we use
-    GpuResources* resources_;
-
-    /// Metric type of the index
-    faiss::MetricType metric_;
-
-    /// Metric arg
-    float metricArg_;
-
-    /// Quantizer object
-    FlatIndex* quantizer_;
-
-    /// Expected dimensionality of the vectors
-    const int dim_;
-
-    /// Number of inverted lists we maintain
-    const int numLists_;
-
-    /// Whether or not our index uses an interleaved by 32 layout:
-    /// The default memory layout is [vector][PQ/SQ component]:
-    /// (v0 d0) (v0 d1) ... (v0 dD-1) (v1 d0) (v1 d1) ...
-    ///
-    /// The interleaved by 32 memory layout is:
-    /// [vector / 32][PQ/SQ component][vector % 32] with padding:
-    /// (v0 d0) (v1 d0) ... (v31 d0) (v0 d1) (v1 d1) ... (v31 dD-1) (v32 d0)
-    /// (v33 d0) ... so the list length is always a multiple of num quantizers *
-    /// 32
-    bool interleavedLayout_;
-
-    /// How are user indices stored on the GPU?
-    const IndicesOptions indicesOptions_;
-
-    /// What memory space our inverted list storage is in
-    const MemorySpace space_;
-
-    /// Device representation of all inverted list data
-    /// id -> data
-    thrust::device_vector<void*> deviceListDataPointers_;
-
-    /// Device representation of all inverted list index pointers
-    /// id -> data
-    thrust::device_vector<void*> deviceListIndexPointers_;
-
-    /// Device representation of all inverted list lengths
-    /// id -> length in number of vectors
-    thrust::device_vector<int> deviceListLengths_;
-
-    /// Maximum list length seen
-    int maxListLength_;
-
-    struct DeviceIVFList {
-        DeviceIVFList(GpuResources* res, const AllocInfo& info);
-
-        /// The on-device memory for this particular IVF list
-        DeviceVector<uint8_t> data;
-
-        /// The number of vectors encoded in this list, which may be unrelated
-        /// to the above allocated data size
-        int numVecs;
-    };
-
-    /// Device memory for each separate list, as managed by the host.
-    /// Device memory as stored in DeviceVector is stored as unique_ptr
-    /// since deviceList*Pointers_ must remain valid despite
-    /// resizing (and potential re-allocation) of deviceList*_
-    std::vector<std::unique_ptr<DeviceIVFList>> deviceListData_;
-    std::vector<std::unique_ptr<DeviceIVFList>> deviceListIndices_;
-
-    /// If we are storing indices on the CPU (indicesOptions_ is
-    /// INDICES_CPU), then this maintains a CPU-side map of what
-    /// (inverted list id, offset) maps to which user index
-    std::vector<std::vector<Index::idx_t>> listOffsetToUserIndex_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFFlat.cu b/faiss/gpu_cuda/impl/IVFFlat.cu
deleted file mode 100644
index 1d99ffee752aa37361998ee1a21054ab83c3b7f6..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFFlat.cu
+++ /dev/null
@@ -1,275 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/impl/InterleavedCodes.h>
-#include <faiss/gpu/impl/RemapIndices.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <thrust/host_vector.h>
-#include <faiss/gpu/impl/FlatIndex.cuh>
-#include <faiss/gpu/impl/IVFAppend.cuh>
-#include <faiss/gpu/impl/IVFFlat.cuh>
-#include <faiss/gpu/impl/IVFFlatScan.cuh>
-#include <faiss/gpu/impl/IVFInterleaved.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/CopyUtils.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-#include <faiss/gpu/utils/Transpose.cuh>
-#include <limits>
-#include <unordered_map>
-
-namespace faiss {
-namespace gpu {
-
-IVFFlat::IVFFlat(
-        GpuResources* res,
-        FlatIndex* quantizer,
-        faiss::MetricType metric,
-        float metricArg,
-        bool useResidual,
-        faiss::ScalarQuantizer* scalarQ,
-        bool interleavedLayout,
-        IndicesOptions indicesOptions,
-        MemorySpace space)
-        : IVFBase(res,
-                  metric,
-                  metricArg,
-                  quantizer,
-                  interleavedLayout,
-                  indicesOptions,
-                  space),
-          useResidual_(useResidual),
-          scalarQ_(scalarQ ? new GpuScalarQuantizer(res, *scalarQ) : nullptr) {}
-
-IVFFlat::~IVFFlat() {}
-
-size_t IVFFlat::getGpuVectorsEncodingSize_(int numVecs) const {
-    if (interleavedLayout_) {
-        // bits per scalar code
-        int bits = scalarQ_ ? scalarQ_->bits : 32 /* float */;
-
-        // bytes to encode a block of 32 vectors (single dimension)
-        int bytesPerDimBlock = bits * 32 / 8;
-
-        // bytes to fully encode 32 vectors
-        int bytesPerBlock = bytesPerDimBlock * dim_;
-
-        // number of blocks of 32 vectors we have
-        int numBlocks = utils::divUp(numVecs, 32);
-
-        // total size to encode numVecs
-        return bytesPerBlock * numBlocks;
-    } else {
-        size_t sizePerVector =
-                (scalarQ_ ? scalarQ_->code_size : sizeof(float) * dim_);
-
-        return (size_t)numVecs * sizePerVector;
-    }
-}
-
-size_t IVFFlat::getCpuVectorsEncodingSize_(int numVecs) const {
-    size_t sizePerVector =
-            (scalarQ_ ? scalarQ_->code_size : sizeof(float) * dim_);
-
-    return (size_t)numVecs * sizePerVector;
-}
-
-std::vector<uint8_t> IVFFlat::translateCodesToGpu_(
-        std::vector<uint8_t> codes,
-        size_t numVecs) const {
-    if (!interleavedLayout_) {
-        // same format
-        return codes;
-    }
-
-    int bitsPerCode = scalarQ_ ? scalarQ_->bits : 32;
-
-    auto up =
-            unpackNonInterleaved(std::move(codes), numVecs, dim_, bitsPerCode);
-    return packInterleaved(std::move(up), numVecs, dim_, bitsPerCode);
-}
-
-std::vector<uint8_t> IVFFlat::translateCodesFromGpu_(
-        std::vector<uint8_t> codes,
-        size_t numVecs) const {
-    if (!interleavedLayout_) {
-        // same format
-        return codes;
-    }
-
-    int bitsPerCode = scalarQ_ ? scalarQ_->bits : 32;
-
-    auto up = unpackInterleaved(std::move(codes), numVecs, dim_, bitsPerCode);
-    return packNonInterleaved(std::move(up), numVecs, dim_, bitsPerCode);
-}
-
-void IVFFlat::appendVectors_(
-        Tensor<float, 2, true>& vecs,
-        Tensor<Index::idx_t, 1, true>& indices,
-        Tensor<int, 1, true>& uniqueLists,
-        Tensor<int, 1, true>& vectorsByUniqueList,
-        Tensor<int, 1, true>& uniqueListVectorStart,
-        Tensor<int, 1, true>& uniqueListStartOffset,
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& listOffset,
-        cudaStream_t stream) {
-    //
-    // Append the new encodings
-    //
-
-    // Calculate residuals for these vectors, if needed
-    DeviceTensor<float, 2, true> residuals(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            {vecs.getSize(0), dim_});
-
-    if (useResidual_) {
-        quantizer_->computeResidual(vecs, listIds, residuals);
-    }
-
-    // Append indices to the IVF lists
-    runIVFIndicesAppend(
-            listIds,
-            listOffset,
-            indices,
-            indicesOptions_,
-            deviceListIndexPointers_,
-            stream);
-
-    // Append the encoded vectors to the IVF lists
-    if (interleavedLayout_) {
-        runIVFFlatInterleavedAppend(
-                listIds,
-                listOffset,
-                uniqueLists,
-                vectorsByUniqueList,
-                uniqueListVectorStart,
-                uniqueListStartOffset,
-                useResidual_ ? residuals : vecs,
-                scalarQ_.get(),
-                deviceListDataPointers_,
-                resources_,
-                stream);
-    } else {
-        runIVFFlatAppend(
-                listIds,
-                listOffset,
-                useResidual_ ? residuals : vecs,
-                scalarQ_.get(),
-                deviceListDataPointers_,
-                stream);
-    }
-}
-
-void IVFFlat::query(
-        Tensor<float, 2, true>& queries,
-        int nprobe,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<Index::idx_t, 2, true>& outIndices) {
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    // These are caught at a higher level
-    FAISS_ASSERT(nprobe <= GPU_MAX_SELECTION_K);
-    FAISS_ASSERT(k <= GPU_MAX_SELECTION_K);
-    nprobe = std::min(nprobe, quantizer_->getSize());
-
-    FAISS_ASSERT(queries.getSize(1) == dim_);
-
-    FAISS_ASSERT(outDistances.getSize(0) == queries.getSize(0));
-    FAISS_ASSERT(outIndices.getSize(0) == queries.getSize(0));
-
-    // Reserve space for the quantized information
-    DeviceTensor<float, 2, true> coarseDistances(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            {queries.getSize(0), nprobe});
-    DeviceTensor<int, 2, true> coarseIndices(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            {queries.getSize(0), nprobe});
-
-    // Find the `nprobe` closest lists; we can use int indices both
-    // internally and externally
-    quantizer_->query(
-            queries,
-            nprobe,
-            metric_,
-            metricArg_,
-            coarseDistances,
-            coarseIndices,
-            false);
-
-    DeviceTensor<float, 3, true> residualBase(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            {queries.getSize(0), nprobe, dim_});
-
-    if (useResidual_) {
-        // Reconstruct vectors from the quantizer
-        quantizer_->reconstruct(coarseIndices, residualBase);
-    }
-
-    if (interleavedLayout_) {
-        runIVFInterleavedScan(
-                queries,
-                coarseIndices,
-                deviceListDataPointers_,
-                deviceListIndexPointers_,
-                indicesOptions_,
-                deviceListLengths_,
-                k,
-                metric_,
-                useResidual_,
-                residualBase,
-                scalarQ_.get(),
-                outDistances,
-                outIndices,
-                resources_);
-    } else {
-        runIVFFlatScan(
-                queries,
-                coarseIndices,
-                deviceListDataPointers_,
-                deviceListIndexPointers_,
-                indicesOptions_,
-                deviceListLengths_,
-                maxListLength_,
-                k,
-                metric_,
-                useResidual_,
-                residualBase,
-                scalarQ_.get(),
-                outDistances,
-                outIndices,
-                resources_);
-    }
-
-    // If the GPU isn't storing indices (they are on the CPU side), we
-    // need to perform the re-mapping here
-    // FIXME: we might ultimately be calling this function with inputs
-    // from the CPU, these are unnecessary copies
-    if (indicesOptions_ == INDICES_CPU) {
-        HostTensor<Index::idx_t, 2, true> hostOutIndices(outIndices, stream);
-
-        ivfOffsetToUserIndex(
-                hostOutIndices.data(),
-                numLists_,
-                hostOutIndices.getSize(0),
-                hostOutIndices.getSize(1),
-                listOffsetToUserIndex_);
-
-        // Copy back to GPU, since the input to this function is on the
-        // GPU
-        outIndices.copyFrom(hostOutIndices, stream);
-    }
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFFlat.cuh b/faiss/gpu_cuda/impl/IVFFlat.cuh
deleted file mode 100644
index 23bbf6cff978d1860a144519eff33543638ab197..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFFlat.cuh
+++ /dev/null
@@ -1,81 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/impl/GpuScalarQuantizer.cuh>
-#include <faiss/gpu/impl/IVFBase.cuh>
-
-namespace faiss {
-namespace gpu {
-
-class IVFFlat : public IVFBase {
-   public:
-    /// Construct from a quantizer that has elemen
-    IVFFlat(GpuResources* resources,
-            /// We do not own this reference
-            FlatIndex* quantizer,
-            faiss::MetricType metric,
-            float metricArg,
-            bool useResidual,
-            /// Optional ScalarQuantizer
-            faiss::ScalarQuantizer* scalarQ,
-            bool interleavedLayout,
-            IndicesOptions indicesOptions,
-            MemorySpace space);
-
-    ~IVFFlat() override;
-
-    /// Find the approximate k nearest neigbors for `queries` against
-    /// our database
-    void query(
-            Tensor<float, 2, true>& queries,
-            int nprobe,
-            int k,
-            Tensor<float, 2, true>& outDistances,
-            Tensor<Index::idx_t, 2, true>& outIndices);
-
-   protected:
-    /// Returns the number of bytes in which an IVF list containing numVecs
-    /// vectors is encoded on the device. Note that due to padding this is not
-    /// the same as the encoding size for a subset of vectors in an IVF list;
-    /// this is the size for an entire IVF list
-    size_t getGpuVectorsEncodingSize_(int numVecs) const override;
-    size_t getCpuVectorsEncodingSize_(int numVecs) const override;
-
-    /// Translate to our preferred GPU encoding
-    std::vector<uint8_t> translateCodesToGpu_(
-            std::vector<uint8_t> codes,
-            size_t numVecs) const override;
-
-    /// Translate from our preferred GPU encoding
-    std::vector<uint8_t> translateCodesFromGpu_(
-            std::vector<uint8_t> codes,
-            size_t numVecs) const override;
-
-    /// Encode the vectors that we're adding and append to our IVF lists
-    void appendVectors_(
-            Tensor<float, 2, true>& vecs,
-            Tensor<Index::idx_t, 1, true>& indices,
-            Tensor<int, 1, true>& uniqueLists,
-            Tensor<int, 1, true>& vectorsByUniqueList,
-            Tensor<int, 1, true>& uniqueListVectorStart,
-            Tensor<int, 1, true>& uniqueListStartOffset,
-            Tensor<int, 1, true>& listIds,
-            Tensor<int, 1, true>& listOffset,
-            cudaStream_t stream) override;
-
-   protected:
-    /// Do we encode the residual from a coarse quantizer or not?
-    bool useResidual_;
-
-    /// Scalar quantizer for encoded vectors, if any
-    std::unique_ptr<GpuScalarQuantizer> scalarQ_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFFlatScan.cu b/faiss/gpu_cuda/impl/IVFFlatScan.cu
deleted file mode 100644
index 99289d903c29f8326044521664f41b94d0a31840..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFFlatScan.cu
+++ /dev/null
@@ -1,522 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/gpu/impl/DistanceUtils.cuh>
-#include <faiss/gpu/impl/IVFFlatScan.cuh>
-#include <faiss/gpu/impl/IVFUtils.cuh>
-#include <faiss/gpu/utils/Comparators.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-#include <faiss/gpu/utils/MathOperators.cuh>
-#include <faiss/gpu/utils/PtxUtils.cuh>
-#include <faiss/gpu/utils/Reductions.cuh>
-
-#include <algorithm>
-
-namespace faiss {
-namespace gpu {
-
-namespace {
-
-/// Sort direction per each metric
-inline bool metricToSortDirection(MetricType mt) {
-    switch (mt) {
-        case MetricType::METRIC_INNER_PRODUCT:
-            // highest
-            return true;
-        case MetricType::METRIC_L2:
-            // lowest
-            return false;
-        default:
-            // unhandled metric
-            FAISS_ASSERT(false);
-            return false;
-    }
-}
-
-} // namespace
-
-// Number of warps we create per block of IVFFlatScan
-constexpr int kIVFFlatScanWarps = 4;
-
-// Works for any dimension size
-template <typename Codec, typename Metric>
-struct IVFFlatScan {
-    static __device__ void scan(
-            float* query,
-            bool useResidual,
-            float* residualBaseSlice,
-            void* vecData,
-            const Codec& codec,
-            const Metric& metric,
-            int numVecs,
-            int dim,
-            float* distanceOut) {
-        // How many separate loading points are there for the decoder?
-        int limit = utils::divDown(dim, Codec::kDimPerIter);
-
-        // Each warp handles a separate chunk of vectors
-        int warpId = threadIdx.x / kWarpSize;
-        // FIXME: why does getLaneId() not work when we write out below!?!?!
-        int laneId = threadIdx.x % kWarpSize; // getLaneId();
-
-        // Divide the set of vectors among the warps
-        int vecsPerWarp = utils::divUp(numVecs, kIVFFlatScanWarps);
-
-        int vecStart = vecsPerWarp * warpId;
-        int vecEnd = min(vecsPerWarp * (warpId + 1), numVecs);
-
-        // Walk the list of vectors for this warp
-        for (int vec = vecStart; vec < vecEnd; ++vec) {
-            Metric dist = metric.zero();
-
-            // Scan the dimensions available that have whole units for the
-            // decoder, as the decoder may handle more than one dimension at
-            // once (leaving the remainder to be handled separately)
-            for (int d = laneId; d < limit; d += kWarpSize) {
-                int realDim = d * Codec::kDimPerIter;
-                float vecVal[Codec::kDimPerIter];
-
-                // Decode the kDimPerIter dimensions
-                codec.decode(vecData, vec, d, vecVal);
-
-#pragma unroll
-                for (int j = 0; j < Codec::kDimPerIter; ++j) {
-                    vecVal[j] +=
-                            useResidual ? residualBaseSlice[realDim + j] : 0.0f;
-                }
-
-#pragma unroll
-                for (int j = 0; j < Codec::kDimPerIter; ++j) {
-                    dist.handle(query[realDim + j], vecVal[j]);
-                }
-            }
-
-            // Handle remainder by a single thread, if any
-            // Not needed if we decode 1 dim per time
-            if (Codec::kDimPerIter > 1) {
-                int realDim = limit * Codec::kDimPerIter;
-
-                // Was there any remainder?
-                if (realDim < dim) {
-                    // Let the first threads in the block sequentially perform
-                    // it
-                    int remainderDim = realDim + laneId;
-
-                    if (remainderDim < dim) {
-                        float vecVal = codec.decodePartial(
-                                vecData, vec, limit, laneId);
-                        vecVal += useResidual ? residualBaseSlice[remainderDim]
-                                              : 0.0f;
-                        dist.handle(query[remainderDim], vecVal);
-                    }
-                }
-            }
-
-            // Reduce distance within warp
-            auto warpDist = warpReduceAllSum(dist.reduce());
-
-            if (laneId == 0) {
-                distanceOut[vec] = warpDist;
-            }
-        }
-    }
-};
-
-template <typename Codec, typename Metric>
-__global__ void ivfFlatScan(
-        Tensor<float, 2, true> queries,
-        bool useResidual,
-        Tensor<float, 3, true> residualBase,
-        Tensor<int, 2, true> listIds,
-        void** allListData,
-        int* listLengths,
-        Codec codec,
-        Metric metric,
-        Tensor<int, 2, true> prefixSumOffsets,
-        Tensor<float, 1, true> distance) {
-    extern __shared__ float smem[];
-
-    auto queryId = blockIdx.y;
-    auto probeId = blockIdx.x;
-
-    // This is where we start writing out data
-    // We ensure that before the array (at offset -1), there is a 0 value
-    int outBase = *(prefixSumOffsets[queryId][probeId].data() - 1);
-
-    auto listId = listIds[queryId][probeId];
-    // Safety guard in case NaNs in input cause no list ID to be generated
-    if (listId == -1) {
-        return;
-    }
-
-    auto query = queries[queryId].data();
-    auto vecs = allListData[listId];
-    auto numVecs = listLengths[listId];
-    auto dim = queries.getSize(1);
-    auto distanceOut = distance[outBase].data();
-
-    auto residualBaseSlice = residualBase[queryId][probeId].data();
-
-    codec.initKernel(smem, dim);
-    __syncthreads();
-
-    IVFFlatScan<Codec, Metric>::scan(
-            query,
-            useResidual,
-            residualBaseSlice,
-            vecs,
-            codec,
-            metric,
-            numVecs,
-            dim,
-            distanceOut);
-}
-
-void runIVFFlatScanTile(
-        GpuResources* res,
-        Tensor<float, 2, true>& queries,
-        Tensor<int, 2, true>& listIds,
-        thrust::device_vector<void*>& listData,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        thrust::device_vector<int>& listLengths,
-        Tensor<char, 1, true>& thrustMem,
-        Tensor<int, 2, true>& prefixSumOffsets,
-        Tensor<float, 1, true>& allDistances,
-        Tensor<float, 3, true>& heapDistances,
-        Tensor<int, 3, true>& heapIndices,
-        int k,
-        faiss::MetricType metricType,
-        bool useResidual,
-        Tensor<float, 3, true>& residualBase,
-        GpuScalarQuantizer* scalarQ,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<Index::idx_t, 2, true>& outIndices,
-        cudaStream_t stream) {
-    int dim = queries.getSize(1);
-
-    // Check the amount of shared memory per block available based on our type
-    // is sufficient
-    if (scalarQ &&
-        (scalarQ->qtype == ScalarQuantizer::QuantizerType::QT_8bit ||
-         scalarQ->qtype == ScalarQuantizer::QuantizerType::QT_4bit)) {
-        int maxDim =
-                getMaxSharedMemPerBlockCurrentDevice() / (sizeof(float) * 2);
-
-        FAISS_THROW_IF_NOT_FMT(
-                dim < maxDim,
-                "Insufficient shared memory available on the GPU "
-                "for QT_8bit or QT_4bit with %d dimensions; "
-                "maximum dimensions possible is %d",
-                dim,
-                maxDim);
-    }
-
-    // Calculate offset lengths, so we know where to write out
-    // intermediate results
-    runCalcListOffsets(
-            res, listIds, listLengths, prefixSumOffsets, thrustMem, stream);
-
-    auto grid = dim3(listIds.getSize(1), listIds.getSize(0));
-    auto block = dim3(kWarpSize * kIVFFlatScanWarps);
-
-#define RUN_IVF_FLAT                                                  \
-    do {                                                              \
-        ivfFlatScan<<<grid, block, codec.getSmemSize(dim), stream>>>( \
-                queries,                                              \
-                useResidual,                                          \
-                residualBase,                                         \
-                listIds,                                              \
-                listData.data().get(),                                \
-                listLengths.data().get(),                             \
-                codec,                                                \
-                metric,                                               \
-                prefixSumOffsets,                                     \
-                allDistances);                                        \
-    } while (0)
-
-#define HANDLE_METRICS                             \
-    do {                                           \
-        if (metricType == MetricType::METRIC_L2) { \
-            L2Distance metric;                     \
-            RUN_IVF_FLAT;                          \
-        } else {                                   \
-            IPDistance metric;                     \
-            RUN_IVF_FLAT;                          \
-        }                                          \
-    } while (0)
-
-    if (!scalarQ) {
-        CodecFloat codec(dim * sizeof(float));
-        HANDLE_METRICS;
-    } else {
-        switch (scalarQ->qtype) {
-            case ScalarQuantizer::QuantizerType::QT_8bit: {
-                Codec<ScalarQuantizer::QuantizerType::QT_8bit, 1> codec(
-                        scalarQ->code_size,
-                        scalarQ->gpuTrained.data(),
-                        scalarQ->gpuTrained.data() + dim);
-                HANDLE_METRICS;
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_8bit_uniform: {
-                Codec<ScalarQuantizer::QuantizerType::QT_8bit_uniform, 1> codec(
-                        scalarQ->code_size,
-                        scalarQ->trained[0],
-                        scalarQ->trained[1]);
-                HANDLE_METRICS;
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_fp16: {
-                Codec<ScalarQuantizer::QuantizerType::QT_fp16, 1> codec(
-                        scalarQ->code_size);
-                HANDLE_METRICS;
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_8bit_direct: {
-                Codec<ScalarQuantizer::QuantizerType::QT_8bit_direct, 1> codec(
-                        scalarQ->code_size);
-                HANDLE_METRICS;
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_4bit: {
-                Codec<ScalarQuantizer::QuantizerType::QT_4bit, 1> codec(
-                        scalarQ->code_size,
-                        scalarQ->gpuTrained.data(),
-                        scalarQ->gpuTrained.data() + dim);
-                HANDLE_METRICS;
-            } break;
-            case ScalarQuantizer::QuantizerType::QT_4bit_uniform: {
-                Codec<ScalarQuantizer::QuantizerType::QT_4bit_uniform, 1> codec(
-                        scalarQ->code_size,
-                        scalarQ->trained[0],
-                        scalarQ->trained[1]);
-                HANDLE_METRICS;
-            } break;
-            default:
-                // unimplemented, should be handled at a higher level
-                FAISS_ASSERT(false);
-        }
-    }
-
-    CUDA_TEST_ERROR();
-
-#undef HANDLE_METRICS
-#undef RUN_IVF_FLAT
-
-    // k-select the output in chunks, to increase parallelism
-    runPass1SelectLists(
-            prefixSumOffsets,
-            allDistances,
-            listIds.getSize(1),
-            k,
-            metricToSortDirection(metricType),
-            heapDistances,
-            heapIndices,
-            stream);
-
-    // k-select final output
-    auto flatHeapDistances = heapDistances.downcastInner<2>();
-    auto flatHeapIndices = heapIndices.downcastInner<2>();
-
-    runPass2SelectLists(
-            flatHeapDistances,
-            flatHeapIndices,
-            listIndices,
-            indicesOptions,
-            prefixSumOffsets,
-            listIds,
-            k,
-            metricToSortDirection(metricType),
-            outDistances,
-            outIndices,
-            stream);
-}
-
-void runIVFFlatScan(
-        Tensor<float, 2, true>& queries,
-        Tensor<int, 2, true>& listIds,
-        thrust::device_vector<void*>& listData,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        thrust::device_vector<int>& listLengths,
-        int maxListLength,
-        int k,
-        faiss::MetricType metric,
-        bool useResidual,
-        Tensor<float, 3, true>& residualBase,
-        GpuScalarQuantizer* scalarQ,
-        // output
-        Tensor<float, 2, true>& outDistances,
-        // output
-        Tensor<Index::idx_t, 2, true>& outIndices,
-        GpuResources* res) {
-    constexpr int kMinQueryTileSize = 8;
-    constexpr int kMaxQueryTileSize = 128;
-    constexpr int kThrustMemSize = 16384;
-
-    int nprobe = listIds.getSize(1);
-    auto stream = res->getDefaultStreamCurrentDevice();
-
-    // Make a reservation for Thrust to do its dirty work (global memory
-    // cross-block reduction space); hopefully this is large enough.
-    DeviceTensor<char, 1, true> thrustMem1(
-            res, makeTempAlloc(AllocType::Other, stream), {kThrustMemSize});
-    DeviceTensor<char, 1, true> thrustMem2(
-            res, makeTempAlloc(AllocType::Other, stream), {kThrustMemSize});
-    DeviceTensor<char, 1, true>* thrustMem[2] = {&thrustMem1, &thrustMem2};
-
-    // How much temporary storage is available?
-    // If possible, we'd like to fit within the space available.
-    size_t sizeAvailable = res->getTempMemoryAvailableCurrentDevice();
-
-    // We run two passes of heap selection
-    // This is the size of the first-level heap passes
-    constexpr int kNProbeSplit = 8;
-    int pass2Chunks = std::min(nprobe, kNProbeSplit);
-
-    size_t sizeForFirstSelectPass =
-            pass2Chunks * k * (sizeof(float) + sizeof(int));
-
-    // How much temporary storage we need per each query
-    size_t sizePerQuery = 2 *                         // # streams
-            ((nprobe * sizeof(int) + sizeof(int)) +   // prefixSumOffsets
-             nprobe * maxListLength * sizeof(float) + // allDistances
-             sizeForFirstSelectPass);
-
-    int queryTileSize = (int)(sizeAvailable / sizePerQuery);
-
-    if (queryTileSize < kMinQueryTileSize) {
-        queryTileSize = kMinQueryTileSize;
-    } else if (queryTileSize > kMaxQueryTileSize) {
-        queryTileSize = kMaxQueryTileSize;
-    }
-
-    // FIXME: we should adjust queryTileSize to deal with this, since
-    // indexing is in int32
-    FAISS_ASSERT(
-            queryTileSize * nprobe * maxListLength <
-            std::numeric_limits<int>::max());
-
-    // Temporary memory buffers
-    // Make sure there is space prior to the start which will be 0, and
-    // will handle the boundary condition without branches
-    DeviceTensor<int, 1, true> prefixSumOffsetSpace1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize * nprobe + 1});
-    DeviceTensor<int, 1, true> prefixSumOffsetSpace2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize * nprobe + 1});
-
-    DeviceTensor<int, 2, true> prefixSumOffsets1(
-            prefixSumOffsetSpace1[1].data(), {queryTileSize, nprobe});
-    DeviceTensor<int, 2, true> prefixSumOffsets2(
-            prefixSumOffsetSpace2[1].data(), {queryTileSize, nprobe});
-    DeviceTensor<int, 2, true>* prefixSumOffsets[2] = {
-            &prefixSumOffsets1, &prefixSumOffsets2};
-
-    // Make sure the element before prefixSumOffsets is 0, since we
-    // depend upon simple, boundary-less indexing to get proper results
-    CUDA_VERIFY(cudaMemsetAsync(
-            prefixSumOffsetSpace1.data(), 0, sizeof(int), stream));
-    CUDA_VERIFY(cudaMemsetAsync(
-            prefixSumOffsetSpace2.data(), 0, sizeof(int), stream));
-
-    DeviceTensor<float, 1, true> allDistances1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize * nprobe * maxListLength});
-    DeviceTensor<float, 1, true> allDistances2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize * nprobe * maxListLength});
-    DeviceTensor<float, 1, true>* allDistances[2] = {
-            &allDistances1, &allDistances2};
-
-    DeviceTensor<float, 3, true> heapDistances1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize, pass2Chunks, k});
-    DeviceTensor<float, 3, true> heapDistances2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize, pass2Chunks, k});
-    DeviceTensor<float, 3, true>* heapDistances[2] = {
-            &heapDistances1, &heapDistances2};
-
-    DeviceTensor<int, 3, true> heapIndices1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize, pass2Chunks, k});
-    DeviceTensor<int, 3, true> heapIndices2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize, pass2Chunks, k});
-    DeviceTensor<int, 3, true>* heapIndices[2] = {&heapIndices1, &heapIndices2};
-
-    auto streams = res->getAlternateStreamsCurrentDevice();
-    streamWait(streams, {stream});
-
-    int curStream = 0;
-
-    for (int query = 0; query < queries.getSize(0); query += queryTileSize) {
-        int numQueriesInTile =
-                std::min(queryTileSize, queries.getSize(0) - query);
-
-        auto prefixSumOffsetsView =
-                prefixSumOffsets[curStream]->narrowOutermost(
-                        0, numQueriesInTile);
-
-        auto listIdsView = listIds.narrowOutermost(query, numQueriesInTile);
-        auto queryView = queries.narrowOutermost(query, numQueriesInTile);
-        auto residualBaseView =
-                residualBase.narrowOutermost(query, numQueriesInTile);
-
-        auto heapDistancesView =
-                heapDistances[curStream]->narrowOutermost(0, numQueriesInTile);
-        auto heapIndicesView =
-                heapIndices[curStream]->narrowOutermost(0, numQueriesInTile);
-
-        auto outDistanceView =
-                outDistances.narrowOutermost(query, numQueriesInTile);
-        auto outIndicesView =
-                outIndices.narrowOutermost(query, numQueriesInTile);
-
-        runIVFFlatScanTile(
-                res,
-                queryView,
-                listIdsView,
-                listData,
-                listIndices,
-                indicesOptions,
-                listLengths,
-                *thrustMem[curStream],
-                prefixSumOffsetsView,
-                *allDistances[curStream],
-                heapDistancesView,
-                heapIndicesView,
-                k,
-                metric,
-                useResidual,
-                residualBaseView,
-                scalarQ,
-                outDistanceView,
-                outIndicesView,
-                streams[curStream]);
-
-        curStream = (curStream + 1) % 2;
-    }
-
-    streamWait({stream}, streams);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFFlatScan.cuh b/faiss/gpu_cuda/impl/IVFFlatScan.cuh
deleted file mode 100644
index 009ad9803a9e14514da92f82b626ea67da504437..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFFlatScan.cuh
+++ /dev/null
@@ -1,41 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/MetricType.h>
-#include <faiss/gpu/GpuIndicesOptions.h>
-#include <thrust/device_vector.h>
-#include <faiss/gpu/impl/GpuScalarQuantizer.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-class GpuResources;
-
-void runIVFFlatScan(
-        Tensor<float, 2, true>& queries,
-        Tensor<int, 2, true>& listIds,
-        thrust::device_vector<void*>& listData,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        thrust::device_vector<int>& listLengths,
-        int maxListLength,
-        int k,
-        faiss::MetricType metric,
-        bool useResidual,
-        Tensor<float, 3, true>& residualBase,
-        GpuScalarQuantizer* scalarQ,
-        // output
-        Tensor<float, 2, true>& outDistances,
-        // output
-        Tensor<Index::idx_t, 2, true>& outIndices,
-        GpuResources* res);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFInterleaved.cu b/faiss/gpu_cuda/impl/IVFInterleaved.cu
deleted file mode 100644
index b0f087feeb548fed2265d9abc7f011e8995b2185..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFInterleaved.cu
+++ /dev/null
@@ -1,212 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/impl/IVFInterleaved.cuh>
-#include <faiss/gpu/impl/scan/IVFInterleavedImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-constexpr uint32_t kMaxUInt32 = std::numeric_limits<uint32_t>::max();
-
-// Second-pass kernel to further k-select the results from the first pass across
-// IVF lists and produce the final results
-template <int ThreadsPerBlock, int NumWarpQ, int NumThreadQ>
-__global__ void ivfInterleavedScan2(
-        Tensor<float, 3, true> distanceIn,
-        Tensor<int, 3, true> indicesIn,
-        Tensor<int, 2, true> listIds,
-        int k,
-        void** listIndices,
-        IndicesOptions opt,
-        bool dir,
-        Tensor<float, 2, true> distanceOut,
-        Tensor<Index::idx_t, 2, true> indicesOut) {
-    int queryId = blockIdx.x;
-
-    constexpr int kNumWarps = ThreadsPerBlock / kWarpSize;
-
-    __shared__ float smemK[kNumWarps * NumWarpQ];
-    __shared__ uint32_t smemV[kNumWarps * NumWarpQ];
-
-    // To avoid creating excessive specializations, we combine direction
-    // kernels, selecting for the smallest element. If `dir` is true, we negate
-    // all values being selected (so that we are selecting the largest element).
-    BlockSelect<
-            float,
-            uint32_t,
-            false,
-            Comparator<float>,
-            NumWarpQ,
-            NumThreadQ,
-            ThreadsPerBlock>
-            heap(kFloatMax, kMaxUInt32, smemK, smemV, k);
-
-    // nprobe x k
-    int num = distanceIn.getSize(1) * distanceIn.getSize(2);
-
-    auto distanceBase = distanceIn[queryId].data();
-    int limit = utils::roundDown(num, kWarpSize);
-
-    // This will keep our negation factor
-    float adj = dir ? -1 : 1;
-
-    int i = threadIdx.x;
-    for (; i < limit; i += blockDim.x) {
-        // We represent the index as (probe id)(k)
-        // Right now, both are limited to a maximum of 2048, but we will
-        // dedicate each to the high and low words of a uint32_t
-        static_assert(GPU_MAX_SELECTION_K <= 65536, "");
-
-        uint32_t curProbe = i / k;
-        uint32_t curK = i % k;
-        uint32_t index = (curProbe << 16) | (curK & (uint32_t)0xffff);
-
-        int listId = listIds[queryId][curProbe];
-        if (listId != -1) {
-            // Adjust the value we are selecting based on the sorting order
-            heap.addThreadQ(distanceBase[i] * adj, index);
-        }
-
-        heap.checkThreadQ();
-    }
-
-    // Handle warp divergence separately
-    if (i < num) {
-        uint32_t curProbe = i / k;
-        uint32_t curK = i % k;
-        uint32_t index = (curProbe << 16) | (curK & (uint32_t)0xffff);
-
-        int listId = listIds[queryId][curProbe];
-        if (listId != -1) {
-            heap.addThreadQ(distanceBase[i] * adj, index);
-        }
-    }
-
-    // Merge all final results
-    heap.reduce();
-
-    for (int i = threadIdx.x; i < k; i += blockDim.x) {
-        // Re-adjust the value we are selecting based on the sorting order
-        distanceOut[queryId][i] = smemK[i] * adj;
-        auto packedIndex = smemV[i];
-
-        // We need to remap to the user-provided indices
-        Index::idx_t index = -1;
-
-        // We may not have at least k values to return; in this function, max
-        // uint32 is our sentinel value
-        if (packedIndex != kMaxUInt32) {
-            uint32_t curProbe = packedIndex >> 16;
-            uint32_t curK = packedIndex & 0xffff;
-
-            int listId = listIds[queryId][curProbe];
-            int listOffset = indicesIn[queryId][curProbe][curK];
-
-            if (opt == INDICES_32_BIT) {
-                index = (Index::idx_t)((int*)listIndices[listId])[listOffset];
-            } else if (opt == INDICES_64_BIT) {
-                index = ((Index::idx_t*)listIndices[listId])[listOffset];
-            } else {
-                index = ((Index::idx_t)listId << 32 | (Index::idx_t)listOffset);
-            }
-        }
-
-        indicesOut[queryId][i] = index;
-    }
-}
-
-void runIVFInterleavedScan2(
-        Tensor<float, 3, true>& distanceIn,
-        Tensor<int, 3, true>& indicesIn,
-        Tensor<int, 2, true>& listIds,
-        int k,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        bool dir,
-        Tensor<float, 2, true>& distanceOut,
-        Tensor<Index::idx_t, 2, true>& indicesOut,
-        cudaStream_t stream) {
-#define IVF_SCAN_2(THREADS, NUM_WARP_Q, NUM_THREAD_Q)        \
-    ivfInterleavedScan2<THREADS, NUM_WARP_Q, NUM_THREAD_Q>   \
-            <<<distanceIn.getSize(0), THREADS, 0, stream>>>( \
-                    distanceIn,                              \
-                    indicesIn,                               \
-                    listIds,                                 \
-                    k,                                       \
-                    listIndices.data().get(),                \
-                    indicesOptions,                          \
-                    dir,                                     \
-                    distanceOut,                             \
-                    indicesOut)
-
-    if (k == 1) {
-        IVF_SCAN_2(128, 1, 1);
-    } else if (k <= 32) {
-        IVF_SCAN_2(128, 32, 2);
-    } else if (k <= 64) {
-        IVF_SCAN_2(128, 64, 3);
-    } else if (k <= 128) {
-        IVF_SCAN_2(128, 128, 3);
-    } else if (k <= 256) {
-        IVF_SCAN_2(128, 256, 4);
-    } else if (k <= 512) {
-        IVF_SCAN_2(128, 512, 8);
-    } else if (k <= 1024) {
-        IVF_SCAN_2(128, 1024, 8);
-    }
-#if GPU_MAX_SELECTION_K >= 2048
-    else if (k <= 2048) {
-        IVF_SCAN_2(64, 2048, 8);
-    }
-#endif
-}
-
-void runIVFInterleavedScan(
-        Tensor<float, 2, true>& queries,
-        Tensor<int, 2, true>& listIds,
-        thrust::device_vector<void*>& listData,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        thrust::device_vector<int>& listLengths,
-        int k,
-        faiss::MetricType metric,
-        bool useResidual,
-        Tensor<float, 3, true>& residualBase,
-        GpuScalarQuantizer* scalarQ,
-        // output
-        Tensor<float, 2, true>& outDistances,
-        // output
-        Tensor<Index::idx_t, 2, true>& outIndices,
-        GpuResources* res) {
-    // caught for exceptions at a higher level
-    FAISS_ASSERT(k <= GPU_MAX_SELECTION_K);
-
-    if (k == 1) {
-        IVF_INTERLEAVED_CALL(1);
-    } else if (k <= 32) {
-        IVF_INTERLEAVED_CALL(32);
-    } else if (k <= 64) {
-        IVF_INTERLEAVED_CALL(64);
-    } else if (k <= 128) {
-        IVF_INTERLEAVED_CALL(128);
-    } else if (k <= 256) {
-        IVF_INTERLEAVED_CALL(256);
-    } else if (k <= 512) {
-        IVF_INTERLEAVED_CALL(512);
-    } else if (k <= 1024) {
-        IVF_INTERLEAVED_CALL(1024);
-    }
-#if GPU_MAX_SELECTION_K >= 2048
-    else if (k <= 2048) {
-        IVF_INTERLEAVED_CALL(2048);
-    }
-#endif
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFInterleaved.cuh b/faiss/gpu_cuda/impl/IVFInterleaved.cuh
deleted file mode 100644
index ae1d4a28d63f9dfd6eddb7875834d01493f403ea..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFInterleaved.cuh
+++ /dev/null
@@ -1,443 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/MetricType.h>
-#include <faiss/gpu/GpuIndicesOptions.h>
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <thrust/device_vector.h>
-#include <faiss/gpu/impl/DistanceUtils.cuh>
-#include <faiss/gpu/impl/GpuScalarQuantizer.cuh>
-#include <faiss/gpu/utils/Comparators.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-#include <faiss/gpu/utils/MathOperators.cuh>
-#include <faiss/gpu/utils/PtxUtils.cuh>
-#include <faiss/gpu/utils/Select.cuh>
-#include <faiss/gpu/utils/WarpPackedBits.cuh>
-
-namespace faiss {
-namespace gpu {
-
-/// First pass kernel to perform scanning of IVF lists to produce top-k
-/// candidates
-template <
-        typename Codec,
-        typename Metric,
-        int ThreadsPerBlock,
-        int NumWarpQ,
-        int NumThreadQ,
-        bool Residual>
-__global__ void ivfInterleavedScan(
-        Tensor<float, 2, true> queries,
-        Tensor<float, 3, true> residualBase,
-        Tensor<int, 2, true> listIds,
-        void** allListData,
-        int* listLengths,
-        Codec codec,
-        Metric metric,
-        int k,
-        // [query][probe][k]
-        Tensor<float, 3, true> distanceOut,
-        Tensor<int, 3, true> indicesOut) {
-    extern __shared__ float smem[];
-
-    constexpr int kNumWarps = ThreadsPerBlock / kWarpSize;
-
-    int queryId = blockIdx.y;
-    int probeId = blockIdx.x;
-    int listId = listIds[queryId][probeId];
-
-    // Safety guard in case NaNs in input cause no list ID to be generated, or
-    // we have more nprobe than nlist
-    if (listId == -1) {
-        return;
-    }
-
-    int dim = queries.getSize(1);
-
-    // FIXME: some issue with getLaneId() and CUDA 10.1 and P4 GPUs?
-    int laneId = threadIdx.x % kWarpSize;
-    int warpId = threadIdx.x / kWarpSize;
-
-    using EncodeT = typename Codec::EncodeT;
-
-    auto query = queries[queryId].data();
-    auto vecsBase = (EncodeT*)allListData[listId];
-    int numVecs = listLengths[listId];
-    auto residualBaseSlice = residualBase[queryId][probeId].data();
-
-    constexpr auto kInit = Metric::kDirection ? kFloatMin : kFloatMax;
-
-    __shared__ float smemK[kNumWarps * NumWarpQ];
-    __shared__ int smemV[kNumWarps * NumWarpQ];
-
-    BlockSelect<
-            float,
-            int,
-            Metric::kDirection,
-            Comparator<float>,
-            NumWarpQ,
-            NumThreadQ,
-            ThreadsPerBlock>
-            heap(kInit, -1, smemK, smemV, k);
-
-    // The codec might be dependent upon data that we need to reference or store
-    // in shared memory
-    codec.initKernel(smem, dim);
-    __syncthreads();
-
-    // How many vector blocks of 32 are in this list?
-    int numBlocks = utils::divUp(numVecs, 32);
-
-    // Number of EncodeT words per each dimension of block of 32 vecs
-    constexpr int bytesPerVectorBlockDim = Codec::kEncodeBits * 32 / 8;
-    constexpr int wordsPerVectorBlockDim =
-            bytesPerVectorBlockDim / sizeof(EncodeT);
-    int wordsPerVectorBlock = wordsPerVectorBlockDim * dim;
-
-    int dimBlocks = utils::roundDown(dim, kWarpSize);
-
-    for (int block = warpId; block < numBlocks; block += kNumWarps) {
-        // We're handling a new vector
-        Metric dist = metric.zero();
-
-        // This is the vector a given lane/thread handles
-        int vec = block * kWarpSize + laneId;
-        bool valid = vec < numVecs;
-
-        // This is where this warp begins reading data
-        EncodeT* data = vecsBase + block * wordsPerVectorBlock;
-
-        // whole blocks
-        for (int dBase = 0; dBase < dimBlocks; dBase += kWarpSize) {
-            int loadDim = dBase + laneId;
-            float queryReg = query[loadDim];
-            float residualReg = Residual ? residualBaseSlice[loadDim] : 0;
-
-            constexpr int kUnroll = 4;
-
-#pragma unroll
-            for (int i = 0; i < kWarpSize / kUnroll;
-                 ++i, data += kUnroll * wordsPerVectorBlockDim) {
-                EncodeT encV[kUnroll];
-#pragma unroll
-                for (int j = 0; j < kUnroll; ++j) {
-                    encV[j] = WarpPackedBits<EncodeT, Codec::kEncodeBits>::read(
-                            laneId, data + j * wordsPerVectorBlockDim);
-                }
-
-#pragma unroll
-                for (int j = 0; j < kUnroll; ++j) {
-                    encV[j] = WarpPackedBits<EncodeT, Codec::kEncodeBits>::
-                            postRead(laneId, encV[j]);
-                }
-
-                float decV[kUnroll];
-#pragma unroll
-                for (int j = 0; j < kUnroll; ++j) {
-                    int d = i * kUnroll + j;
-                    decV[j] = codec.decodeNew(dBase + d, encV[j]);
-                }
-
-                if (Residual) {
-#pragma unroll
-                    for (int j = 0; j < kUnroll; ++j) {
-                        int d = i * kUnroll + j;
-                        decV[j] += SHFL_SYNC(residualReg, d, kWarpSize);
-                    }
-                }
-
-#pragma unroll
-                for (int j = 0; j < kUnroll; ++j) {
-                    int d = i * kUnroll + j;
-                    float q = SHFL_SYNC(queryReg, d, kWarpSize);
-                    dist.handle(q, decV[j]);
-                }
-            }
-        }
-
-        // remainder
-        int loadDim = dimBlocks + laneId;
-        bool loadDimInBounds = loadDim < dim;
-
-        float queryReg = loadDimInBounds ? query[loadDim] : 0;
-        float residualReg =
-                Residual && loadDimInBounds ? residualBaseSlice[loadDim] : 0;
-
-        for (int d = 0; d < dim - dimBlocks;
-             ++d, data += wordsPerVectorBlockDim) {
-            float q = SHFL_SYNC(queryReg, d, kWarpSize);
-
-            EncodeT enc = WarpPackedBits<EncodeT, Codec::kEncodeBits>::read(
-                    laneId, data);
-            enc = WarpPackedBits<EncodeT, Codec::kEncodeBits>::postRead(
-                    laneId, enc);
-            float dec = codec.decodeNew(dimBlocks + d, enc);
-            if (Residual) {
-                dec += SHFL_SYNC(residualReg, d, kWarpSize);
-            }
-
-            dist.handle(q, dec);
-        }
-
-        if (valid) {
-            heap.addThreadQ(dist.reduce(), vec);
-        }
-
-        heap.checkThreadQ();
-    }
-
-    heap.reduce();
-
-    auto distanceOutBase = distanceOut[queryId][probeId].data();
-    auto indicesOutBase = indicesOut[queryId][probeId].data();
-
-    for (int i = threadIdx.x; i < k; i += blockDim.x) {
-        distanceOutBase[i] = smemK[i];
-        indicesOutBase[i] = smemV[i];
-    }
-}
-
-//
-// We split up the scan function into multiple compilation units to cut down on
-// compile time using these macros to define the function body
-//
-
-#define IVFINT_RUN(CODEC_TYPE, METRIC_TYPE, THREADS, NUM_WARP_Q, NUM_THREAD_Q) \
-    do {                                                                       \
-        dim3 grid(nprobe, nq);                                                 \
-        if (useResidual) {                                                     \
-            ivfInterleavedScan<                                                \
-                    CODEC_TYPE,                                                \
-                    METRIC_TYPE,                                               \
-                    THREADS,                                                   \
-                    NUM_WARP_Q,                                                \
-                    NUM_THREAD_Q,                                              \
-                    true><<<grid, THREADS, codec.getSmemSize(dim), stream>>>(  \
-                    queries,                                                   \
-                    residualBase,                                              \
-                    listIds,                                                   \
-                    listData.data().get(),                                     \
-                    listLengths.data().get(),                                  \
-                    codec,                                                     \
-                    metric,                                                    \
-                    k,                                                         \
-                    distanceTemp,                                              \
-                    indicesTemp);                                              \
-        } else {                                                               \
-            ivfInterleavedScan<                                                \
-                    CODEC_TYPE,                                                \
-                    METRIC_TYPE,                                               \
-                    THREADS,                                                   \
-                    NUM_WARP_Q,                                                \
-                    NUM_THREAD_Q,                                              \
-                    false><<<grid, THREADS, codec.getSmemSize(dim), stream>>>( \
-                    queries,                                                   \
-                    residualBase,                                              \
-                    listIds,                                                   \
-                    listData.data().get(),                                     \
-                    listLengths.data().get(),                                  \
-                    codec,                                                     \
-                    metric,                                                    \
-                    k,                                                         \
-                    distanceTemp,                                              \
-                    indicesTemp);                                              \
-        }                                                                      \
-                                                                               \
-        runIVFInterleavedScan2(                                                \
-                distanceTemp,                                                  \
-                indicesTemp,                                                   \
-                listIds,                                                       \
-                k,                                                             \
-                listIndices,                                                   \
-                indicesOptions,                                                \
-                METRIC_TYPE::kDirection,                                       \
-                outDistances,                                                  \
-                outIndices,                                                    \
-                stream);                                                       \
-    } while (0);
-
-#define IVFINT_CODECS(METRIC_TYPE, THREADS, NUM_WARP_Q, NUM_THREAD_Q)          \
-    do {                                                                       \
-        if (!scalarQ) {                                                        \
-            using CodecT = CodecFloat;                                         \
-            CodecT codec(dim * sizeof(float));                                 \
-            IVFINT_RUN(                                                        \
-                    CodecT, METRIC_TYPE, THREADS, NUM_WARP_Q, NUM_THREAD_Q);   \
-        } else {                                                               \
-            switch (scalarQ->qtype) {                                          \
-                case ScalarQuantizer::QuantizerType::QT_8bit: {                \
-                    using CodecT =                                             \
-                            Codec<ScalarQuantizer::QuantizerType::QT_8bit, 1>; \
-                    CodecT codec(                                              \
-                            scalarQ->code_size,                                \
-                            scalarQ->gpuTrained.data(),                        \
-                            scalarQ->gpuTrained.data() + dim);                 \
-                    IVFINT_RUN(                                                \
-                            CodecT,                                            \
-                            METRIC_TYPE,                                       \
-                            THREADS,                                           \
-                            NUM_WARP_Q,                                        \
-                            NUM_THREAD_Q);                                     \
-                } break;                                                       \
-                case ScalarQuantizer::QuantizerType::QT_8bit_uniform: {        \
-                    using CodecT = Codec<                                      \
-                            ScalarQuantizer::QuantizerType::QT_8bit_uniform,   \
-                            1>;                                                \
-                    CodecT codec(                                              \
-                            scalarQ->code_size,                                \
-                            scalarQ->trained[0],                               \
-                            scalarQ->trained[1]);                              \
-                    IVFINT_RUN(                                                \
-                            CodecT,                                            \
-                            METRIC_TYPE,                                       \
-                            THREADS,                                           \
-                            NUM_WARP_Q,                                        \
-                            NUM_THREAD_Q);                                     \
-                } break;                                                       \
-                case ScalarQuantizer::QuantizerType::QT_fp16: {                \
-                    using CodecT =                                             \
-                            Codec<ScalarQuantizer::QuantizerType::QT_fp16, 1>; \
-                    CodecT codec(scalarQ->code_size);                          \
-                    IVFINT_RUN(                                                \
-                            CodecT,                                            \
-                            METRIC_TYPE,                                       \
-                            THREADS,                                           \
-                            NUM_WARP_Q,                                        \
-                            NUM_THREAD_Q);                                     \
-                } break;                                                       \
-                case ScalarQuantizer::QuantizerType::QT_8bit_direct: {         \
-                    using CodecT = Codec<                                      \
-                            ScalarQuantizer::QuantizerType::QT_8bit_direct,    \
-                            1>;                                                \
-                    Codec<ScalarQuantizer::QuantizerType::QT_8bit_direct, 1>   \
-                            codec(scalarQ->code_size);                         \
-                    IVFINT_RUN(                                                \
-                            CodecT,                                            \
-                            METRIC_TYPE,                                       \
-                            THREADS,                                           \
-                            NUM_WARP_Q,                                        \
-                            NUM_THREAD_Q);                                     \
-                } break;                                                       \
-                case ScalarQuantizer::QuantizerType::QT_6bit: {                \
-                    using CodecT =                                             \
-                            Codec<ScalarQuantizer::QuantizerType::QT_6bit, 1>; \
-                    Codec<ScalarQuantizer::QuantizerType::QT_6bit, 1> codec(   \
-                            scalarQ->code_size,                                \
-                            scalarQ->gpuTrained.data(),                        \
-                            scalarQ->gpuTrained.data() + dim);                 \
-                    IVFINT_RUN(                                                \
-                            CodecT,                                            \
-                            METRIC_TYPE,                                       \
-                            THREADS,                                           \
-                            NUM_WARP_Q,                                        \
-                            NUM_THREAD_Q);                                     \
-                } break;                                                       \
-                case ScalarQuantizer::QuantizerType::QT_4bit: {                \
-                    using CodecT =                                             \
-                            Codec<ScalarQuantizer::QuantizerType::QT_4bit, 1>; \
-                    Codec<ScalarQuantizer::QuantizerType::QT_4bit, 1> codec(   \
-                            scalarQ->code_size,                                \
-                            scalarQ->gpuTrained.data(),                        \
-                            scalarQ->gpuTrained.data() + dim);                 \
-                    IVFINT_RUN(                                                \
-                            CodecT,                                            \
-                            METRIC_TYPE,                                       \
-                            THREADS,                                           \
-                            NUM_WARP_Q,                                        \
-                            NUM_THREAD_Q);                                     \
-                } break;                                                       \
-                case ScalarQuantizer::QuantizerType::QT_4bit_uniform: {        \
-                    using CodecT = Codec<                                      \
-                            ScalarQuantizer::QuantizerType::QT_4bit_uniform,   \
-                            1>;                                                \
-                    Codec<ScalarQuantizer::QuantizerType::QT_4bit_uniform, 1>  \
-                            codec(scalarQ->code_size,                          \
-                                  scalarQ->trained[0],                         \
-                                  scalarQ->trained[1]);                        \
-                    IVFINT_RUN(                                                \
-                            CodecT,                                            \
-                            METRIC_TYPE,                                       \
-                            THREADS,                                           \
-                            NUM_WARP_Q,                                        \
-                            NUM_THREAD_Q);                                     \
-                } break;                                                       \
-                default:                                                       \
-                    FAISS_ASSERT(false);                                       \
-            }                                                                  \
-        }                                                                      \
-    } while (0)
-
-#define IVFINT_METRICS(THREADS, NUM_WARP_Q, NUM_THREAD_Q)                 \
-    do {                                                                  \
-        auto stream = res->getDefaultStreamCurrentDevice();               \
-        auto nq = queries.getSize(0);                                     \
-        auto dim = queries.getSize(1);                                    \
-        auto nprobe = listIds.getSize(1);                                 \
-                                                                          \
-        DeviceTensor<float, 3, true> distanceTemp(                        \
-                res,                                                      \
-                makeTempAlloc(AllocType::Other, stream),                  \
-                {queries.getSize(0), listIds.getSize(1), k});             \
-        DeviceTensor<int, 3, true> indicesTemp(                           \
-                res,                                                      \
-                makeTempAlloc(AllocType::Other, stream),                  \
-                {queries.getSize(0), listIds.getSize(1), k});             \
-                                                                          \
-        if (metric == MetricType::METRIC_L2) {                            \
-            L2Distance metric;                                            \
-            IVFINT_CODECS(L2Distance, THREADS, NUM_WARP_Q, NUM_THREAD_Q); \
-        } else if (metric == MetricType::METRIC_INNER_PRODUCT) {          \
-            IPDistance metric;                                            \
-            IVFINT_CODECS(IPDistance, THREADS, NUM_WARP_Q, NUM_THREAD_Q); \
-        } else {                                                          \
-            FAISS_ASSERT(false);                                          \
-        }                                                                 \
-    } while (0)
-
-// Top-level IVF scan function for the interleaved by 32 layout
-// with all implementations
-void runIVFInterleavedScan(
-        Tensor<float, 2, true>& queries,
-        Tensor<int, 2, true>& listIds,
-        thrust::device_vector<void*>& listData,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        thrust::device_vector<int>& listLengths,
-        int k,
-        faiss::MetricType metric,
-        bool useResidual,
-        Tensor<float, 3, true>& residualBase,
-        GpuScalarQuantizer* scalarQ,
-        // output
-        Tensor<float, 2, true>& outDistances,
-        // output
-        Tensor<Index::idx_t, 2, true>& outIndices,
-        GpuResources* res);
-
-// Second pass of IVF list scanning to perform final k-selection and look up the
-// user indices
-void runIVFInterleavedScan2(
-        Tensor<float, 3, true>& distanceIn,
-        Tensor<int, 3, true>& indicesIn,
-        Tensor<int, 2, true>& listIds,
-        int k,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        bool dir,
-        Tensor<float, 2, true>& distanceOut,
-        Tensor<Index::idx_t, 2, true>& indicesOut,
-        cudaStream_t stream);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFPQ.cu b/faiss/gpu_cuda/impl/IVFPQ.cu
deleted file mode 100644
index f5b44fdaac7533e361a1acf109ff6443668e7517..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFPQ.cu
+++ /dev/null
@@ -1,746 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/impl/InterleavedCodes.h>
-#include <faiss/gpu/impl/RemapIndices.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <thrust/host_vector.h>
-#include <faiss/gpu/impl/BroadcastSum.cuh>
-#include <faiss/gpu/impl/Distance.cuh>
-#include <faiss/gpu/impl/FlatIndex.cuh>
-#include <faiss/gpu/impl/IVFAppend.cuh>
-#include <faiss/gpu/impl/IVFPQ.cuh>
-#include <faiss/gpu/impl/L2Norm.cuh>
-#include <faiss/gpu/impl/PQCodeDistances.cuh>
-#include <faiss/gpu/impl/PQScanMultiPassNoPrecomputed.cuh>
-#include <faiss/gpu/impl/PQScanMultiPassPrecomputed.cuh>
-#include <faiss/gpu/impl/VectorResidual.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-#include <faiss/gpu/utils/MatrixMult.cuh>
-#include <faiss/gpu/utils/NoTypeTensor.cuh>
-#include <faiss/gpu/utils/Transpose.cuh>
-#include <limits>
-#include <type_traits>
-#include <unordered_map>
-
-namespace faiss {
-namespace gpu {
-
-IVFPQ::IVFPQ(
-        GpuResources* resources,
-        faiss::MetricType metric,
-        float metricArg,
-        FlatIndex* quantizer,
-        int numSubQuantizers,
-        int bitsPerSubQuantizer,
-        bool useFloat16LookupTables,
-        bool useMMCodeDistance,
-        bool interleavedLayout,
-        float* pqCentroidData,
-        IndicesOptions indicesOptions,
-        MemorySpace space)
-        : IVFBase(resources,
-                  metric,
-                  metricArg,
-                  quantizer,
-                  interleavedLayout,
-                  indicesOptions,
-                  space),
-          numSubQuantizers_(numSubQuantizers),
-          bitsPerSubQuantizer_(bitsPerSubQuantizer),
-          numSubQuantizerCodes_(utils::pow2(bitsPerSubQuantizer_)),
-          dimPerSubQuantizer_(dim_ / numSubQuantizers),
-          useFloat16LookupTables_(useFloat16LookupTables),
-          useMMCodeDistance_(useMMCodeDistance),
-          precomputedCodes_(false) {
-    FAISS_ASSERT(pqCentroidData);
-
-    FAISS_ASSERT(bitsPerSubQuantizer_ <= 8);
-    FAISS_ASSERT(dim_ % numSubQuantizers_ == 0);
-    FAISS_ASSERT(
-            interleavedLayout || isSupportedPQCodeLength(numSubQuantizers_));
-
-    setPQCentroids_(pqCentroidData);
-}
-
-IVFPQ::~IVFPQ() {}
-
-bool IVFPQ::isSupportedPQCodeLength(int size) {
-    switch (size) {
-        case 1:
-        case 2:
-        case 3:
-        case 4:
-        case 8:
-        case 12:
-        case 16:
-        case 20:
-        case 24:
-        case 28:
-        case 32:
-        case 40:
-        case 48:
-        case 56: // only supported with float16
-        case 64: // only supported with float16
-        case 96: // only supported with float16
-            return true;
-        default:
-            return false;
-    }
-}
-
-void IVFPQ::setPrecomputedCodes(bool enable) {
-    if (enable && metric_ == MetricType::METRIC_INNER_PRODUCT) {
-        fprintf(stderr,
-                "Precomputed codes are not needed for GpuIndexIVFPQ "
-                "with METRIC_INNER_PRODUCT");
-        return;
-    }
-
-    if (precomputedCodes_ != enable) {
-        precomputedCodes_ = enable;
-
-        if (precomputedCodes_) {
-            precomputeCodes_();
-        } else {
-            // Clear out old precomputed code data
-            precomputedCode_ = DeviceTensor<float, 3, true>();
-            precomputedCodeHalf_ = DeviceTensor<half, 3, true>();
-        }
-    }
-}
-
-void IVFPQ::appendVectors_(
-        Tensor<float, 2, true>& vecs,
-        Tensor<Index::idx_t, 1, true>& indices,
-        Tensor<int, 1, true>& uniqueLists,
-        Tensor<int, 1, true>& vectorsByUniqueList,
-        Tensor<int, 1, true>& uniqueListVectorStart,
-        Tensor<int, 1, true>& uniqueListStartOffset,
-        Tensor<int, 1, true>& listIds,
-        Tensor<int, 1, true>& listOffset,
-        cudaStream_t stream) {
-    //
-    // Determine the encodings of the vectors
-    //
-
-    // For now we are restricted to <= 8 bits per code (hence uint8_t in the
-    // encodings)
-    FAISS_ASSERT(bitsPerSubQuantizer_ <= 8);
-
-    DeviceTensor<uint8_t, 2, true> encodings(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            {vecs.getSize(0), numSubQuantizers_});
-
-    {
-        // Calculate the residual for each closest centroid
-        DeviceTensor<float, 2, true> residuals(
-                resources_,
-                makeTempAlloc(AllocType::Other, stream),
-                {vecs.getSize(0), vecs.getSize(1)});
-
-        if (quantizer_->getUseFloat16()) {
-            auto& coarseCentroids = quantizer_->getVectorsFloat16Ref();
-            runCalcResidual(vecs, coarseCentroids, listIds, residuals, stream);
-        } else {
-            auto& coarseCentroids = quantizer_->getVectorsFloat32Ref();
-            runCalcResidual(vecs, coarseCentroids, listIds, residuals, stream);
-        }
-
-        // Residuals are in the form
-        // (vec x numSubQuantizer x dimPerSubQuantizer)
-        // transpose to
-        // (numSubQuantizer x vec x dimPerSubQuantizer)
-        auto residualsView = residuals.view<3>(
-                {residuals.getSize(0), numSubQuantizers_, dimPerSubQuantizer_});
-
-        DeviceTensor<float, 3, true> residualsTranspose(
-                resources_,
-                makeTempAlloc(AllocType::Other, stream),
-                {numSubQuantizers_, residuals.getSize(0), dimPerSubQuantizer_});
-
-        runTransposeAny(residualsView, 0, 1, residualsTranspose, stream);
-
-        // Get the product quantizer centroids in the form
-        // (numSubQuantizer x numSubQuantizerCodes x dimPerSubQuantizer)
-        // which is pqCentroidsMiddleCode_
-
-        // We now have a batch operation to find the top-1 distances:
-        // batch size: numSubQuantizer
-        // centroids: (numSubQuantizerCodes x dimPerSubQuantizer)
-        // residuals: (vec x dimPerSubQuantizer)
-        // => (numSubQuantizer x vec x 1)
-        DeviceTensor<float, 3, true> closestSubQDistance(
-                resources_,
-                makeTempAlloc(AllocType::Other, stream),
-                {numSubQuantizers_, residuals.getSize(0), 1});
-        DeviceTensor<int, 3, true> closestSubQIndex(
-                resources_,
-                makeTempAlloc(AllocType::Other, stream),
-                {numSubQuantizers_, residuals.getSize(0), 1});
-
-        for (int subQ = 0; subQ < numSubQuantizers_; ++subQ) {
-            auto closestSubQDistanceView = closestSubQDistance[subQ].view();
-            auto closestSubQIndexView = closestSubQIndex[subQ].view();
-
-            auto pqCentroidsMiddleCodeView =
-                    pqCentroidsMiddleCode_[subQ].view();
-            auto residualsTransposeView = residualsTranspose[subQ].view();
-
-            runL2Distance(
-                    resources_,
-                    stream,
-                    pqCentroidsMiddleCodeView,
-                    true,    // pqCentroidsMiddleCodeView is row major
-                    nullptr, // no precomputed norms
-                    residualsTransposeView,
-                    true, // residualsTransposeView is row major
-                    1,
-                    closestSubQDistanceView,
-                    closestSubQIndexView,
-                    // We don't care about distances
-                    true);
-        }
-
-        // The L2 distance function only returns int32 indices. As we are
-        // restricted to <= 8 bits per code, convert to uint8
-        auto closestSubQIndex8 = convertTensorTemporary<int, uint8_t, 3>(
-                resources_, stream, closestSubQIndex);
-
-        // Now, we have the nearest sub-q centroid for each slice of the
-        // residual vector.
-        auto closestSubQIndex8View = closestSubQIndex8.view<2>(
-                {numSubQuantizers_, residuals.getSize(0)});
-
-        // The encodings are finally a transpose of this data
-        runTransposeAny(closestSubQIndex8View, 0, 1, encodings, stream);
-    }
-
-    // Append indices to the IVF lists
-    runIVFIndicesAppend(
-            listIds,
-            listOffset,
-            indices,
-            indicesOptions_,
-            deviceListIndexPointers_,
-            stream);
-
-    // Append the encoded vectors to the IVF lists
-    if (interleavedLayout_) {
-        runIVFPQInterleavedAppend(
-                listIds,
-                listOffset,
-                uniqueLists,
-                vectorsByUniqueList,
-                uniqueListVectorStart,
-                uniqueListStartOffset,
-                bitsPerSubQuantizer_,
-                encodings,
-                deviceListDataPointers_,
-                stream);
-    } else {
-        runIVFPQAppend(
-                listIds,
-                listOffset,
-                encodings,
-                deviceListDataPointers_,
-                stream);
-    }
-}
-
-size_t IVFPQ::getGpuVectorsEncodingSize_(int numVecs) const {
-    if (interleavedLayout_) {
-        // bits per PQ code
-        int bits = bitsPerSubQuantizer_;
-
-        // bytes to encode a block of 32 vectors (single PQ code)
-        int bytesPerDimBlock = bits * 32 / 8;
-
-        // bytes to fully encode 32 vectors
-        int bytesPerBlock = bytesPerDimBlock * numSubQuantizers_;
-
-        // number of blocks of 32 vectors we have
-        int numBlocks = utils::divUp(numVecs, 32);
-
-        // total size to encode numVecs
-        return bytesPerBlock * numBlocks;
-    } else {
-        return (size_t)numVecs * numSubQuantizers_;
-    }
-}
-
-size_t IVFPQ::getCpuVectorsEncodingSize_(int numVecs) const {
-    size_t sizePerVector =
-            utils::divUp(numSubQuantizers_ * bitsPerSubQuantizer_, 8);
-
-    return (size_t)numVecs * sizePerVector;
-}
-
-// Convert the CPU layout to the GPU layout
-std::vector<uint8_t> IVFPQ::translateCodesToGpu_(
-        std::vector<uint8_t> codes,
-        size_t numVecs) const {
-    if (!interleavedLayout_) {
-        return codes;
-    }
-
-    auto up = unpackNonInterleaved(
-            std::move(codes), numVecs, numSubQuantizers_, bitsPerSubQuantizer_);
-    return packInterleaved(
-            std::move(up), numVecs, numSubQuantizers_, bitsPerSubQuantizer_);
-}
-
-// Conver the GPU layout to the CPU layout
-std::vector<uint8_t> IVFPQ::translateCodesFromGpu_(
-        std::vector<uint8_t> codes,
-        size_t numVecs) const {
-    if (!interleavedLayout_) {
-        return codes;
-    }
-
-    auto up = unpackInterleaved(
-            std::move(codes), numVecs, numSubQuantizers_, bitsPerSubQuantizer_);
-    return packNonInterleaved(
-            std::move(up), numVecs, numSubQuantizers_, bitsPerSubQuantizer_);
-}
-
-void IVFPQ::setPQCentroids_(float* data) {
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    size_t pqSize =
-            numSubQuantizers_ * numSubQuantizerCodes_ * dimPerSubQuantizer_;
-
-    // Make sure the data is on the host
-    // FIXME: why are we doing this?
-    thrust::host_vector<float> hostMemory;
-    hostMemory.insert(hostMemory.end(), data, data + pqSize);
-
-    HostTensor<float, 3, true> pqHost(
-            hostMemory.data(),
-            {numSubQuantizers_, numSubQuantizerCodes_, dimPerSubQuantizer_});
-
-    DeviceTensor<float, 3, true> pqDeviceTranspose(
-            resources_,
-            makeDevAlloc(AllocType::Quantizer, stream),
-            {numSubQuantizers_, dimPerSubQuantizer_, numSubQuantizerCodes_});
-
-    {
-        // Only needed for the duration of the transposition
-        DeviceTensor<float, 3, true> pqDevice(
-                resources_,
-                makeTempAlloc(AllocType::Quantizer, stream),
-                pqHost);
-
-        runTransposeAny(pqDevice, 1, 2, pqDeviceTranspose, stream);
-    }
-
-    pqCentroidsInnermostCode_ = std::move(pqDeviceTranspose);
-
-    // Also maintain the PQ centroids in the form
-    // (sub q)(code id)(sub dim)
-    DeviceTensor<float, 3, true> pqCentroidsMiddleCode(
-            resources_,
-            makeDevAlloc(AllocType::Quantizer, stream),
-            {numSubQuantizers_, numSubQuantizerCodes_, dimPerSubQuantizer_});
-
-    runTransposeAny(
-            pqCentroidsInnermostCode_, 1, 2, pqCentroidsMiddleCode, stream);
-
-    pqCentroidsMiddleCode_ = std::move(pqCentroidsMiddleCode);
-}
-
-template <typename CentroidT>
-void IVFPQ::precomputeCodesT_() {
-    FAISS_ASSERT(metric_ == MetricType::METRIC_L2);
-
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    //
-    //    d = || x - y_C ||^2 + || y_R ||^2 + 2 * (y_C|y_R) - 2 * (x|y_R)
-    //        ---------------   ---------------------------       -------
-    //            term 1                 term 2                   term 3
-    //
-
-    // Terms 1 and 3 are available only at query time. We compute term 2
-    // here.
-
-    // Compute 2 * (y_C|y_R) via batch matrix multiplication
-    // batch size (sub q) x {(centroid id)(sub dim) x (code id)(sub dim)'}
-    //         => (sub q) x {(centroid id)(code id)}
-    //         => (sub q)(centroid id)(code id)
-
-    // View (centroid id)(dim) as
-    //      (centroid id)(sub q)(dim)
-    // Transpose (centroid id)(sub q)(sub dim) to
-    //           (sub q)(centroid id)(sub dim)
-    auto& coarseCentroids = quantizer_->template getVectorsRef<CentroidT>();
-
-    // Create the coarse PQ product
-    DeviceTensor<float, 3, true> coarsePQProduct(
-            resources_,
-            makeTempAlloc(AllocType::QuantizerPrecomputedCodes, stream),
-            {numSubQuantizers_,
-             coarseCentroids.getSize(0),
-             numSubQuantizerCodes_});
-
-    {
-        auto centroidView = coarseCentroids.template view<3>(
-                {coarseCentroids.getSize(0),
-                 numSubQuantizers_,
-                 dimPerSubQuantizer_});
-
-        // This is only needed temporarily
-        DeviceTensor<CentroidT, 3, true> centroidsTransposed(
-                resources_,
-                makeTempAlloc(AllocType::QuantizerPrecomputedCodes, stream),
-                {numSubQuantizers_,
-                 coarseCentroids.getSize(0),
-                 dimPerSubQuantizer_});
-
-        runTransposeAny(centroidView, 0, 1, centroidsTransposed, stream);
-
-        if (std::is_same<CentroidT, half>::value) {
-            // cuBLAS does not support f32 x f16 = f32, convert CentroidT to f32
-            // if necessary
-            DeviceTensor<float, 3, true> centroidsTransposedF32(
-                    resources_,
-                    makeTempAlloc(AllocType::QuantizerPrecomputedCodes, stream),
-                    {numSubQuantizers_,
-                     coarseCentroids.getSize(0),
-                     dimPerSubQuantizer_});
-
-            convertTensor(stream, centroidsTransposed, centroidsTransposedF32);
-
-            runBatchMatrixMult(
-                    coarsePQProduct,
-                    false,
-                    centroidsTransposedF32,
-                    false,
-                    pqCentroidsMiddleCode_,
-                    true,
-                    2.0f,
-                    0.0f,
-                    resources_->getBlasHandleCurrentDevice(),
-                    stream);
-        } else {
-            // All in f32
-            runBatchMatrixMult(
-                    coarsePQProduct,
-                    false,
-                    centroidsTransposed,
-                    false,
-                    pqCentroidsMiddleCode_,
-                    true,
-                    2.0f,
-                    0.0f,
-                    resources_->getBlasHandleCurrentDevice(),
-                    stream);
-        }
-    }
-
-    // Transpose (sub q)(centroid id)(code id) to
-    //           (centroid id)(sub q)(code id)
-    // This will become our precomputed code output
-    DeviceTensor<float, 3, true> coarsePQProductTransposed(
-            resources_,
-            makeDevAlloc(AllocType::QuantizerPrecomputedCodes, stream),
-            {coarseCentroids.getSize(0),
-             numSubQuantizers_,
-             numSubQuantizerCodes_});
-    runTransposeAny(coarsePQProduct, 0, 1, coarsePQProductTransposed, stream);
-
-    // View (centroid id)(sub q)(code id) as
-    //      (centroid id)(sub q * code id)
-    auto coarsePQProductTransposedView = coarsePQProductTransposed.view<2>(
-            {coarseCentroids.getSize(0),
-             numSubQuantizers_ * numSubQuantizerCodes_});
-
-    // Sum || y_R ||^2 + 2 * (y_C|y_R)
-    // i.e., add norms                              (sub q * code id)
-    // along columns of inner product  (centroid id)(sub q * code id)
-    {
-        // Compute ||y_R||^2 by treating
-        // (sub q)(code id)(sub dim) as (sub q * code id)(sub dim)
-        auto pqCentroidsMiddleCodeView = pqCentroidsMiddleCode_.view<2>(
-                {numSubQuantizers_ * numSubQuantizerCodes_,
-                 dimPerSubQuantizer_});
-        DeviceTensor<float, 1, true> subQuantizerNorms(
-                resources_,
-                makeTempAlloc(AllocType::QuantizerPrecomputedCodes, stream),
-                {numSubQuantizers_ * numSubQuantizerCodes_});
-
-        runL2Norm(
-                pqCentroidsMiddleCodeView,
-                true,
-                subQuantizerNorms,
-                true,
-                stream);
-
-        runSumAlongColumns(
-                subQuantizerNorms, coarsePQProductTransposedView, stream);
-    }
-
-    // We added into the view, so `coarsePQProductTransposed` is now our
-    // precomputed term 2.
-    if (useFloat16LookupTables_) {
-        precomputedCodeHalf_ = DeviceTensor<half, 3, true>(
-                resources_,
-                makeDevAlloc(AllocType::QuantizerPrecomputedCodes, stream),
-                {coarseCentroids.getSize(0),
-                 numSubQuantizers_,
-                 numSubQuantizerCodes_});
-
-        convertTensor(stream, coarsePQProductTransposed, precomputedCodeHalf_);
-    } else {
-        precomputedCode_ = std::move(coarsePQProductTransposed);
-    }
-}
-
-void IVFPQ::precomputeCodes_() {
-    if (quantizer_->getUseFloat16()) {
-        precomputeCodesT_<half>();
-    } else {
-        precomputeCodesT_<float>();
-    }
-}
-
-void IVFPQ::query(
-        Tensor<float, 2, true>& queries,
-        int nprobe,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<Index::idx_t, 2, true>& outIndices) {
-    // These are caught at a higher level
-    FAISS_ASSERT(nprobe <= GPU_MAX_SELECTION_K);
-    FAISS_ASSERT(k <= GPU_MAX_SELECTION_K);
-
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-    nprobe = std::min(nprobe, quantizer_->getSize());
-
-    FAISS_ASSERT(queries.getSize(1) == dim_);
-    FAISS_ASSERT(outDistances.getSize(0) == queries.getSize(0));
-    FAISS_ASSERT(outIndices.getSize(0) == queries.getSize(0));
-
-    // Reserve space for the closest coarse centroids
-    DeviceTensor<float, 2, true> coarseDistances(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            {queries.getSize(0), nprobe});
-    DeviceTensor<int, 2, true> coarseIndices(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            {queries.getSize(0), nprobe});
-
-    // Find the `nprobe` closest coarse centroids; we can use int
-    // indices both internally and externally
-    quantizer_->query(
-            queries,
-            nprobe,
-            metric_,
-            metricArg_,
-            coarseDistances,
-            coarseIndices,
-            true);
-
-    if (precomputedCodes_) {
-        FAISS_ASSERT(metric_ == MetricType::METRIC_L2);
-
-        runPQPrecomputedCodes_(
-                queries,
-                coarseDistances,
-                coarseIndices,
-                k,
-                outDistances,
-                outIndices);
-    } else {
-        runPQNoPrecomputedCodes_(
-                queries,
-                coarseDistances,
-                coarseIndices,
-                k,
-                outDistances,
-                outIndices);
-    }
-
-    // If the GPU isn't storing indices (they are on the CPU side), we
-    // need to perform the re-mapping here
-    // FIXME: we might ultimately be calling this function with inputs
-    // from the CPU, these are unnecessary copies
-    if (indicesOptions_ == INDICES_CPU) {
-        HostTensor<Index::idx_t, 2, true> hostOutIndices(outIndices, stream);
-
-        ivfOffsetToUserIndex(
-                hostOutIndices.data(),
-                numLists_,
-                hostOutIndices.getSize(0),
-                hostOutIndices.getSize(1),
-                listOffsetToUserIndex_);
-
-        // Copy back to GPU, since the input to this function is on the
-        // GPU
-        outIndices.copyFrom(hostOutIndices, stream);
-    }
-}
-
-Tensor<float, 3, true> IVFPQ::getPQCentroids() {
-    return pqCentroidsMiddleCode_;
-}
-
-void IVFPQ::runPQPrecomputedCodes_(
-        Tensor<float, 2, true>& queries,
-        DeviceTensor<float, 2, true>& coarseDistances,
-        DeviceTensor<int, 2, true>& coarseIndices,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<Index::idx_t, 2, true>& outIndices) {
-    FAISS_ASSERT(metric_ == MetricType::METRIC_L2);
-
-    auto stream = resources_->getDefaultStreamCurrentDevice();
-
-    // Compute precomputed code term 3, - 2 * (x|y_R)
-    // This is done via batch MM
-    // {sub q} x {(query id)(sub dim) * (code id)(sub dim)'} =>
-    // {sub q} x {(query id)(code id)}
-    DeviceTensor<float, 3, true> term3Transposed(
-            resources_,
-            makeTempAlloc(AllocType::Other, stream),
-            {queries.getSize(0), numSubQuantizers_, numSubQuantizerCodes_});
-
-    // These allocations within are only temporary, so release them when
-    // we're done to maximize free space
-    {
-        auto querySubQuantizerView = queries.view<3>(
-                {queries.getSize(0), numSubQuantizers_, dimPerSubQuantizer_});
-        DeviceTensor<float, 3, true> queriesTransposed(
-                resources_,
-                makeTempAlloc(AllocType::Other, stream),
-                {numSubQuantizers_, queries.getSize(0), dimPerSubQuantizer_});
-        runTransposeAny(querySubQuantizerView, 0, 1, queriesTransposed, stream);
-
-        DeviceTensor<float, 3, true> term3(
-                resources_,
-                makeTempAlloc(AllocType::Other, stream),
-                {numSubQuantizers_, queries.getSize(0), numSubQuantizerCodes_});
-
-        runBatchMatrixMult(
-                term3,
-                false,
-                queriesTransposed,
-                false,
-                pqCentroidsMiddleCode_,
-                true,
-                -2.0f,
-                0.0f,
-                resources_->getBlasHandleCurrentDevice(),
-                stream);
-
-        runTransposeAny(term3, 0, 1, term3Transposed, stream);
-    }
-
-    NoTypeTensor<3, true> term2;
-    NoTypeTensor<3, true> term3;
-    DeviceTensor<half, 3, true> term3Half;
-
-    if (useFloat16LookupTables_) {
-        term3Half = convertTensorTemporary<float, half, 3>(
-                resources_, stream, term3Transposed);
-
-        term2 = NoTypeTensor<3, true>(precomputedCodeHalf_);
-        term3 = NoTypeTensor<3, true>(term3Half);
-    } else {
-        term2 = NoTypeTensor<3, true>(precomputedCode_);
-        term3 = NoTypeTensor<3, true>(term3Transposed);
-    }
-
-    runPQScanMultiPassPrecomputed(
-            queries,
-            coarseDistances, // term 1
-            term2,           // term 2
-            term3,           // term 3
-            coarseIndices,
-            useFloat16LookupTables_,
-            interleavedLayout_,
-            bitsPerSubQuantizer_,
-            numSubQuantizers_,
-            numSubQuantizerCodes_,
-            deviceListDataPointers_,
-            deviceListIndexPointers_,
-            indicesOptions_,
-            deviceListLengths_,
-            maxListLength_,
-            k,
-            outDistances,
-            outIndices,
-            resources_);
-}
-
-template <typename CentroidT>
-void IVFPQ::runPQNoPrecomputedCodesT_(
-        Tensor<float, 2, true>& queries,
-        DeviceTensor<float, 2, true>& coarseDistances,
-        DeviceTensor<int, 2, true>& coarseIndices,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<Index::idx_t, 2, true>& outIndices) {
-    auto& coarseCentroids = quantizer_->template getVectorsRef<CentroidT>();
-
-    runPQScanMultiPassNoPrecomputed(
-            queries,
-            coarseCentroids,
-            pqCentroidsInnermostCode_,
-            coarseDistances,
-            coarseIndices,
-            useFloat16LookupTables_,
-            useMMCodeDistance_,
-            interleavedLayout_,
-            bitsPerSubQuantizer_,
-            numSubQuantizers_,
-            numSubQuantizerCodes_,
-            deviceListDataPointers_,
-            deviceListIndexPointers_,
-            indicesOptions_,
-            deviceListLengths_,
-            maxListLength_,
-            k,
-            metric_,
-            outDistances,
-            outIndices,
-            resources_);
-}
-
-void IVFPQ::runPQNoPrecomputedCodes_(
-        Tensor<float, 2, true>& queries,
-        DeviceTensor<float, 2, true>& coarseDistances,
-        DeviceTensor<int, 2, true>& coarseIndices,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<Index::idx_t, 2, true>& outIndices) {
-    if (quantizer_->getUseFloat16()) {
-        runPQNoPrecomputedCodesT_<half>(
-                queries,
-                coarseDistances,
-                coarseIndices,
-                k,
-                outDistances,
-                outIndices);
-    } else {
-        runPQNoPrecomputedCodesT_<float>(
-                queries,
-                coarseDistances,
-                coarseIndices,
-                k,
-                outDistances,
-                outIndices);
-    }
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFPQ.cuh b/faiss/gpu_cuda/impl/IVFPQ.cuh
deleted file mode 100644
index 8612920325c11c684b7a4257ba8686860c9678a1..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFPQ.cuh
+++ /dev/null
@@ -1,171 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/Index.h>
-#include <faiss/MetricType.h>
-#include <faiss/gpu/impl/IVFBase.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-
-namespace faiss {
-namespace gpu {
-
-/// Implementing class for IVFPQ on the GPU
-class IVFPQ : public IVFBase {
-   public:
-    IVFPQ(GpuResources* resources,
-          faiss::MetricType metric,
-          float metricArg,
-          /// We do not own this reference
-          FlatIndex* quantizer,
-          int numSubQuantizers,
-          int bitsPerSubQuantizer,
-          bool useFloat16LookupTables,
-          bool useMMCodeDistance,
-          bool interleavedLayout,
-          float* pqCentroidData,
-          IndicesOptions indicesOptions,
-          MemorySpace space);
-
-    /// Returns true if we support PQ in this size
-    static bool isSupportedPQCodeLength(int size);
-
-    ~IVFPQ() override;
-
-    /// Enable or disable pre-computed codes
-    void setPrecomputedCodes(bool enable);
-
-    /// Find the approximate k nearest neigbors for `queries` against
-    /// our database
-    void query(
-            Tensor<float, 2, true>& queries,
-            int nprobe,
-            int k,
-            Tensor<float, 2, true>& outDistances,
-            Tensor<Index::idx_t, 2, true>& outIndices);
-
-    /// Returns our set of sub-quantizers of the form
-    /// (sub q)(code id)(sub dim)
-    Tensor<float, 3, true> getPQCentroids();
-
-   protected:
-    /// Returns the encoding size for a PQ-encoded IVF list
-    size_t getGpuVectorsEncodingSize_(int numVecs) const override;
-    size_t getCpuVectorsEncodingSize_(int numVecs) const override;
-
-    /// Translate to our preferred GPU encoding
-    std::vector<uint8_t> translateCodesToGpu_(
-            std::vector<uint8_t> codes,
-            size_t numVecs) const override;
-
-    /// Translate from our preferred GPU encoding
-    std::vector<uint8_t> translateCodesFromGpu_(
-            std::vector<uint8_t> codes,
-            size_t numVecs) const override;
-
-    /// Encode the vectors that we're adding and append to our IVF lists
-    void appendVectors_(
-            Tensor<float, 2, true>& vecs,
-            Tensor<Index::idx_t, 1, true>& indices,
-            Tensor<int, 1, true>& uniqueLists,
-            Tensor<int, 1, true>& vectorsByUniqueList,
-            Tensor<int, 1, true>& uniqueListVectorStart,
-            Tensor<int, 1, true>& uniqueListStartOffset,
-            Tensor<int, 1, true>& listIds,
-            Tensor<int, 1, true>& listOffset,
-            cudaStream_t stream) override;
-
-    /// Sets the current product quantizer centroids; the data can be
-    /// resident on either the host or the device. It will be transposed
-    /// into our preferred data layout
-    /// Data must be a row-major, 3-d array of size
-    /// (numSubQuantizers, numSubQuantizerCodes, dim / numSubQuantizers)
-    void setPQCentroids_(float* data);
-
-    /// Calculate precomputed residual distance information
-    void precomputeCodes_();
-
-    /// Calculate precomputed residual distance information (for different
-    /// coarse centroid type)
-    template <typename CentroidT>
-    void precomputeCodesT_();
-
-    /// Runs kernels for scanning inverted lists with precomputed codes
-    void runPQPrecomputedCodes_(
-            Tensor<float, 2, true>& queries,
-            DeviceTensor<float, 2, true>& coarseDistances,
-            DeviceTensor<int, 2, true>& coarseIndices,
-            int k,
-            Tensor<float, 2, true>& outDistances,
-            Tensor<Index::idx_t, 2, true>& outIndices);
-
-    /// Runs kernels for scanning inverted lists without precomputed codes
-    void runPQNoPrecomputedCodes_(
-            Tensor<float, 2, true>& queries,
-            DeviceTensor<float, 2, true>& coarseDistances,
-            DeviceTensor<int, 2, true>& coarseIndices,
-            int k,
-            Tensor<float, 2, true>& outDistances,
-            Tensor<Index::idx_t, 2, true>& outIndices);
-
-    /// Runs kernels for scanning inverted lists without precomputed codes (for
-    /// different coarse centroid type)
-    template <typename CentroidT>
-    void runPQNoPrecomputedCodesT_(
-            Tensor<float, 2, true>& queries,
-            DeviceTensor<float, 2, true>& coarseDistances,
-            DeviceTensor<int, 2, true>& coarseIndices,
-            int k,
-            Tensor<float, 2, true>& outDistances,
-            Tensor<Index::idx_t, 2, true>& outIndices);
-
-   private:
-    /// Number of sub-quantizers per vector
-    const int numSubQuantizers_;
-
-    /// Number of bits per sub-quantizer
-    const int bitsPerSubQuantizer_;
-
-    /// Number of per sub-quantizer codes (2^bits)
-    const int numSubQuantizerCodes_;
-
-    /// Number of dimensions per each sub-quantizer
-    const int dimPerSubQuantizer_;
-
-    /// Do we maintain precomputed terms and lookup tables in float16
-    /// form?
-    const bool useFloat16LookupTables_;
-
-    /// For usage without precomputed codes, do we force usage of the
-    /// general-purpose MM code distance computation? This is for testing
-    /// purposes.
-    const bool useMMCodeDistance_;
-
-    /// On the GPU, we prefer different PQ centroid data layouts for
-    /// different purposes.
-    ///
-    /// (sub q)(sub dim)(code id)
-    DeviceTensor<float, 3, true> pqCentroidsInnermostCode_;
-
-    /// (sub q)(code id)(sub dim)
-    DeviceTensor<float, 3, true> pqCentroidsMiddleCode_;
-
-    /// Are precomputed codes enabled? (additional factoring and
-    /// precomputation of the residual distance, to reduce query-time work)
-    bool precomputedCodes_;
-
-    /// Precomputed term 2 in float form
-    /// (centroid id)(sub q)(code id)
-    DeviceTensor<float, 3, true> precomputedCode_;
-
-    /// Precomputed term 2 in half form
-    DeviceTensor<half, 3, true> precomputedCodeHalf_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFUtils.cu b/faiss/gpu_cuda/impl/IVFUtils.cu
deleted file mode 100644
index bdc6e891e5e9c0f32c5f3a8875a5939f3de4a835..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFUtils.cu
+++ /dev/null
@@ -1,84 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <thrust/execution_policy.h>
-#include <thrust/scan.h>
-#include <faiss/gpu/impl/IVFUtils.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-#include <faiss/gpu/utils/ThrustAllocator.cuh>
-
-#include <algorithm>
-
-namespace faiss {
-namespace gpu {
-
-// Calculates the total number of intermediate distances to consider
-// for all queries
-__global__ void getResultLengths(
-        Tensor<int, 2, true> topQueryToCentroid,
-        int* listLengths,
-        int totalSize,
-        Tensor<int, 2, true> length) {
-    int linearThreadId = blockIdx.x * blockDim.x + threadIdx.x;
-    if (linearThreadId >= totalSize) {
-        return;
-    }
-
-    int nprobe = topQueryToCentroid.getSize(1);
-    int queryId = linearThreadId / nprobe;
-    int listId = linearThreadId % nprobe;
-
-    int centroidId = topQueryToCentroid[queryId][listId];
-
-    // Safety guard in case NaNs in input cause no list ID to be generated
-    length[queryId][listId] = (centroidId != -1) ? listLengths[centroidId] : 0;
-}
-
-void runCalcListOffsets(
-        GpuResources* res,
-        Tensor<int, 2, true>& topQueryToCentroid,
-        thrust::device_vector<int>& listLengths,
-        Tensor<int, 2, true>& prefixSumOffsets,
-        Tensor<char, 1, true>& thrustMem,
-        cudaStream_t stream) {
-    FAISS_ASSERT(topQueryToCentroid.getSize(0) == prefixSumOffsets.getSize(0));
-    FAISS_ASSERT(topQueryToCentroid.getSize(1) == prefixSumOffsets.getSize(1));
-
-    int totalSize = topQueryToCentroid.numElements();
-
-    int numThreads = std::min(totalSize, getMaxThreadsCurrentDevice());
-    int numBlocks = utils::divUp(totalSize, numThreads);
-
-    auto grid = dim3(numBlocks);
-    auto block = dim3(numThreads);
-
-    getResultLengths<<<grid, block, 0, stream>>>(
-            topQueryToCentroid,
-            listLengths.data().get(),
-            totalSize,
-            prefixSumOffsets);
-    CUDA_TEST_ERROR();
-
-    // Prefix sum of the indices, so we know where the intermediate
-    // results should be maintained
-    // Thrust wants a place for its temporary allocations, so provide
-    // one, so it won't call cudaMalloc/Free if we size it sufficiently
-    GpuResourcesThrustAllocator alloc(
-            res, stream, thrustMem.data(), thrustMem.getSizeInBytes());
-
-    thrust::inclusive_scan(
-            thrust::cuda::par(alloc).on(stream),
-            prefixSumOffsets.data(),
-            prefixSumOffsets.data() + totalSize,
-            prefixSumOffsets.data());
-    CUDA_TEST_ERROR();
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFUtils.cuh b/faiss/gpu_cuda/impl/IVFUtils.cuh
deleted file mode 100644
index aa0043e397861e002438cee4b4ebf5257d95efcf..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFUtils.cuh
+++ /dev/null
@@ -1,59 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/Index.h>
-#include <faiss/gpu/GpuIndicesOptions.h>
-#include <thrust/device_vector.h>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-// A collection of utility functions for IVFPQ and IVFFlat, for
-// post-processing and k-selecting the results
-namespace faiss {
-namespace gpu {
-
-class GpuResources;
-
-/// Function for multi-pass scanning that collects the length of
-/// intermediate results for all (query, probe) pair
-void runCalcListOffsets(
-        GpuResources* res,
-        Tensor<int, 2, true>& topQueryToCentroid,
-        thrust::device_vector<int>& listLengths,
-        Tensor<int, 2, true>& prefixSumOffsets,
-        Tensor<char, 1, true>& thrustMem,
-        cudaStream_t stream);
-
-/// Performs a first pass of k-selection on the results
-void runPass1SelectLists(
-        Tensor<int, 2, true>& prefixSumOffsets,
-        Tensor<float, 1, true>& distance,
-        int nprobe,
-        int k,
-        bool chooseLargest,
-        Tensor<float, 3, true>& heapDistances,
-        Tensor<int, 3, true>& heapIndices,
-        cudaStream_t stream);
-
-/// Performs a final pass of k-selection on the results, producing the
-/// final indices
-void runPass2SelectLists(
-        Tensor<float, 2, true>& heapDistances,
-        Tensor<int, 2, true>& heapIndices,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        Tensor<int, 2, true>& prefixSumOffsets,
-        Tensor<int, 2, true>& topQueryToCentroid,
-        int k,
-        bool chooseLargest,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<Index::idx_t, 2, true>& outIndices,
-        cudaStream_t stream);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFUtilsSelect1.cu b/faiss/gpu_cuda/impl/IVFUtilsSelect1.cu
deleted file mode 100644
index f9ae4fb768fc961cc150c0aa34b2ccf2804f9f12..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFUtilsSelect1.cu
+++ /dev/null
@@ -1,175 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/gpu/impl/IVFUtils.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/Limits.cuh>
-#include <faiss/gpu/utils/Select.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-//
-// This kernel is split into a separate compilation unit to cut down
-// on compile time
-//
-
-namespace faiss {
-namespace gpu {
-
-template <int ThreadsPerBlock, int NumWarpQ, int NumThreadQ, bool Dir>
-__global__ void pass1SelectLists(
-        Tensor<int, 2, true> prefixSumOffsets,
-        Tensor<float, 1, true> distance,
-        int nprobe,
-        int k,
-        Tensor<float, 3, true> heapDistances,
-        Tensor<int, 3, true> heapIndices) {
-    constexpr int kNumWarps = ThreadsPerBlock / kWarpSize;
-
-    __shared__ float smemK[kNumWarps * NumWarpQ];
-    __shared__ int smemV[kNumWarps * NumWarpQ];
-
-    constexpr auto kInit = Dir ? kFloatMin : kFloatMax;
-    BlockSelect<
-            float,
-            int,
-            Dir,
-            Comparator<float>,
-            NumWarpQ,
-            NumThreadQ,
-            ThreadsPerBlock>
-            heap(kInit, -1, smemK, smemV, k);
-
-    auto queryId = blockIdx.y;
-    auto sliceId = blockIdx.x;
-    auto numSlices = gridDim.x;
-
-    int sliceSize = (nprobe / numSlices);
-    int sliceStart = sliceSize * sliceId;
-    int sliceEnd = sliceId == (numSlices - 1) ? nprobe : sliceStart + sliceSize;
-    auto offsets = prefixSumOffsets[queryId].data();
-
-    // We ensure that before the array (at offset -1), there is a 0 value
-    int start = *(&offsets[sliceStart] - 1);
-    int end = offsets[sliceEnd - 1];
-
-    int num = end - start;
-    int limit = utils::roundDown(num, kWarpSize);
-
-    int i = threadIdx.x;
-    auto distanceStart = distance[start].data();
-
-    // BlockSelect add cannot be used in a warp divergent circumstance; we
-    // handle the remainder warp below
-    for (; i < limit; i += blockDim.x) {
-        heap.add(distanceStart[i], start + i);
-    }
-
-    // Handle warp divergence separately
-    if (i < num) {
-        heap.addThreadQ(distanceStart[i], start + i);
-    }
-
-    // Merge all final results
-    heap.reduce();
-
-    // Write out the final k-selected values; they should be all
-    // together
-    for (int i = threadIdx.x; i < k; i += blockDim.x) {
-        heapDistances[queryId][sliceId][i] = smemK[i];
-        heapIndices[queryId][sliceId][i] = smemV[i];
-    }
-}
-
-void runPass1SelectLists(
-        Tensor<int, 2, true>& prefixSumOffsets,
-        Tensor<float, 1, true>& distance,
-        int nprobe,
-        int k,
-        bool chooseLargest,
-        Tensor<float, 3, true>& heapDistances,
-        Tensor<int, 3, true>& heapIndices,
-        cudaStream_t stream) {
-    // This is caught at a higher level
-    FAISS_ASSERT(k <= GPU_MAX_SELECTION_K);
-
-    auto grid = dim3(heapDistances.getSize(1), prefixSumOffsets.getSize(0));
-
-#define RUN_PASS(BLOCK, NUM_WARP_Q, NUM_THREAD_Q, DIR)         \
-    do {                                                       \
-        pass1SelectLists<BLOCK, NUM_WARP_Q, NUM_THREAD_Q, DIR> \
-                <<<grid, BLOCK, 0, stream>>>(                  \
-                        prefixSumOffsets,                      \
-                        distance,                              \
-                        nprobe,                                \
-                        k,                                     \
-                        heapDistances,                         \
-                        heapIndices);                          \
-        CUDA_TEST_ERROR();                                     \
-        return; /* success */                                  \
-    } while (0)
-
-#if GPU_MAX_SELECTION_K >= 2048
-
-    // block size 128 for k <= 1024, 64 for k = 2048
-#define RUN_PASS_DIR(DIR)                \
-    do {                                 \
-        if (k == 1) {                    \
-            RUN_PASS(128, 1, 1, DIR);    \
-        } else if (k <= 32) {            \
-            RUN_PASS(128, 32, 2, DIR);   \
-        } else if (k <= 64) {            \
-            RUN_PASS(128, 64, 3, DIR);   \
-        } else if (k <= 128) {           \
-            RUN_PASS(128, 128, 3, DIR);  \
-        } else if (k <= 256) {           \
-            RUN_PASS(128, 256, 4, DIR);  \
-        } else if (k <= 512) {           \
-            RUN_PASS(128, 512, 8, DIR);  \
-        } else if (k <= 1024) {          \
-            RUN_PASS(128, 1024, 8, DIR); \
-        } else if (k <= 2048) {          \
-            RUN_PASS(64, 2048, 8, DIR);  \
-        }                                \
-    } while (0)
-
-#else
-
-#define RUN_PASS_DIR(DIR)                \
-    do {                                 \
-        if (k == 1) {                    \
-            RUN_PASS(128, 1, 1, DIR);    \
-        } else if (k <= 32) {            \
-            RUN_PASS(128, 32, 2, DIR);   \
-        } else if (k <= 64) {            \
-            RUN_PASS(128, 64, 3, DIR);   \
-        } else if (k <= 128) {           \
-            RUN_PASS(128, 128, 3, DIR);  \
-        } else if (k <= 256) {           \
-            RUN_PASS(128, 256, 4, DIR);  \
-        } else if (k <= 512) {           \
-            RUN_PASS(128, 512, 8, DIR);  \
-        } else if (k <= 1024) {          \
-            RUN_PASS(128, 1024, 8, DIR); \
-        }                                \
-    } while (0)
-
-#endif // GPU_MAX_SELECTION_K
-
-    if (chooseLargest) {
-        RUN_PASS_DIR(true);
-    } else {
-        RUN_PASS_DIR(false);
-    }
-
-#undef RUN_PASS_DIR
-#undef RUN_PASS
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IVFUtilsSelect2.cu b/faiss/gpu_cuda/impl/IVFUtilsSelect2.cu
deleted file mode 100644
index d5073b5b68927b17ebe31cf7e0eb995d0a1effae..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IVFUtilsSelect2.cu
+++ /dev/null
@@ -1,244 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/gpu/impl/IVFUtils.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/Limits.cuh>
-#include <faiss/gpu/utils/Select.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-//
-// This kernel is split into a separate compilation unit to cut down
-// on compile time
-//
-
-namespace faiss {
-namespace gpu {
-
-// This is warp divergence central, but this is really a final step
-// and happening a small number of times
-inline __device__ int binarySearchForBucket(
-        int* prefixSumOffsets,
-        int size,
-        int val) {
-    int start = 0;
-    int end = size;
-
-    while (end - start > 0) {
-        int mid = start + (end - start) / 2;
-
-        int midVal = prefixSumOffsets[mid];
-
-        // Find the first bucket that we are <=
-        if (midVal <= val) {
-            start = mid + 1;
-        } else {
-            end = mid;
-        }
-    }
-
-    // We must find the bucket that it is in
-    assert(start != size);
-
-    return start;
-}
-
-template <int ThreadsPerBlock, int NumWarpQ, int NumThreadQ, bool Dir>
-__global__ void pass2SelectLists(
-        Tensor<float, 2, true> heapDistances,
-        Tensor<int, 2, true> heapIndices,
-        void** listIndices,
-        Tensor<int, 2, true> prefixSumOffsets,
-        Tensor<int, 2, true> topQueryToCentroid,
-        int k,
-        IndicesOptions opt,
-        Tensor<float, 2, true> outDistances,
-        Tensor<Index::idx_t, 2, true> outIndices) {
-    constexpr int kNumWarps = ThreadsPerBlock / kWarpSize;
-
-    __shared__ float smemK[kNumWarps * NumWarpQ];
-    __shared__ int smemV[kNumWarps * NumWarpQ];
-
-    constexpr auto kInit = Dir ? kFloatMin : kFloatMax;
-    BlockSelect<
-            float,
-            int,
-            Dir,
-            Comparator<float>,
-            NumWarpQ,
-            NumThreadQ,
-            ThreadsPerBlock>
-            heap(kInit, -1, smemK, smemV, k);
-
-    auto queryId = blockIdx.x;
-    int num = heapDistances.getSize(1);
-    int limit = utils::roundDown(num, kWarpSize);
-
-    int i = threadIdx.x;
-    auto heapDistanceStart = heapDistances[queryId];
-
-    // BlockSelect add cannot be used in a warp divergent circumstance; we
-    // handle the remainder warp below
-    for (; i < limit; i += blockDim.x) {
-        heap.add(heapDistanceStart[i], i);
-    }
-
-    // Handle warp divergence separately
-    if (i < num) {
-        heap.addThreadQ(heapDistanceStart[i], i);
-    }
-
-    // Merge all final results
-    heap.reduce();
-
-    for (int i = threadIdx.x; i < k; i += blockDim.x) {
-        outDistances[queryId][i] = smemK[i];
-
-        // `v` is the index in `heapIndices`
-        // We need to translate this into an original user index. The
-        // reason why we don't maintain intermediate results in terms of
-        // user indices is to substantially reduce temporary memory
-        // requirements and global memory write traffic for the list
-        // scanning.
-        // This code is highly divergent, but it's probably ok, since this
-        // is the very last step and it is happening a small number of
-        // times (#queries x k).
-        int v = smemV[i];
-        Index::idx_t index = -1;
-
-        if (v != -1) {
-            // `offset` is the offset of the intermediate result, as
-            // calculated by the original scan.
-            int offset = heapIndices[queryId][v];
-
-            // In order to determine the actual user index, we need to first
-            // determine what list it was in.
-            // We do this by binary search in the prefix sum list.
-            int probe = binarySearchForBucket(
-                    prefixSumOffsets[queryId].data(),
-                    prefixSumOffsets.getSize(1),
-                    offset);
-
-            // This is then the probe for the query; we can find the actual
-            // list ID from this
-            int listId = topQueryToCentroid[queryId][probe];
-
-            // Now, we need to know the offset within the list
-            // We ensure that before the array (at offset -1), there is a 0
-            // value
-            int listStart = *(prefixSumOffsets[queryId][probe].data() - 1);
-            int listOffset = offset - listStart;
-
-            // This gives us our final index
-            if (opt == INDICES_32_BIT) {
-                index = (Index::idx_t)((int*)listIndices[listId])[listOffset];
-            } else if (opt == INDICES_64_BIT) {
-                index = ((Index::idx_t*)listIndices[listId])[listOffset];
-            } else {
-                index = ((Index::idx_t)listId << 32 | (Index::idx_t)listOffset);
-            }
-        }
-
-        outIndices[queryId][i] = index;
-    }
-}
-
-void runPass2SelectLists(
-        Tensor<float, 2, true>& heapDistances,
-        Tensor<int, 2, true>& heapIndices,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        Tensor<int, 2, true>& prefixSumOffsets,
-        Tensor<int, 2, true>& topQueryToCentroid,
-        int k,
-        bool chooseLargest,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<Index::idx_t, 2, true>& outIndices,
-        cudaStream_t stream) {
-    auto grid = dim3(topQueryToCentroid.getSize(0));
-
-#define RUN_PASS(BLOCK, NUM_WARP_Q, NUM_THREAD_Q, DIR)         \
-    do {                                                       \
-        pass2SelectLists<BLOCK, NUM_WARP_Q, NUM_THREAD_Q, DIR> \
-                <<<grid, BLOCK, 0, stream>>>(                  \
-                        heapDistances,                         \
-                        heapIndices,                           \
-                        listIndices.data().get(),              \
-                        prefixSumOffsets,                      \
-                        topQueryToCentroid,                    \
-                        k,                                     \
-                        indicesOptions,                        \
-                        outDistances,                          \
-                        outIndices);                           \
-        CUDA_TEST_ERROR();                                     \
-        return; /* success */                                  \
-    } while (0)
-
-#if GPU_MAX_SELECTION_K >= 2048
-
-    // block size 128 for k <= 1024, 64 for k = 2048
-#define RUN_PASS_DIR(DIR)                \
-    do {                                 \
-        if (k == 1) {                    \
-            RUN_PASS(128, 1, 1, DIR);    \
-        } else if (k <= 32) {            \
-            RUN_PASS(128, 32, 2, DIR);   \
-        } else if (k <= 64) {            \
-            RUN_PASS(128, 64, 3, DIR);   \
-        } else if (k <= 128) {           \
-            RUN_PASS(128, 128, 3, DIR);  \
-        } else if (k <= 256) {           \
-            RUN_PASS(128, 256, 4, DIR);  \
-        } else if (k <= 512) {           \
-            RUN_PASS(128, 512, 8, DIR);  \
-        } else if (k <= 1024) {          \
-            RUN_PASS(128, 1024, 8, DIR); \
-        } else if (k <= 2048) {          \
-            RUN_PASS(64, 2048, 8, DIR);  \
-        }                                \
-    } while (0)
-
-#else
-
-#define RUN_PASS_DIR(DIR)                \
-    do {                                 \
-        if (k == 1) {                    \
-            RUN_PASS(128, 1, 1, DIR);    \
-        } else if (k <= 32) {            \
-            RUN_PASS(128, 32, 2, DIR);   \
-        } else if (k <= 64) {            \
-            RUN_PASS(128, 64, 3, DIR);   \
-        } else if (k <= 128) {           \
-            RUN_PASS(128, 128, 3, DIR);  \
-        } else if (k <= 256) {           \
-            RUN_PASS(128, 256, 4, DIR);  \
-        } else if (k <= 512) {           \
-            RUN_PASS(128, 512, 8, DIR);  \
-        } else if (k <= 1024) {          \
-            RUN_PASS(128, 1024, 8, DIR); \
-        }                                \
-    } while (0)
-
-#endif // GPU_MAX_SELECTION_K
-
-    if (chooseLargest) {
-        RUN_PASS_DIR(true);
-    } else {
-        RUN_PASS_DIR(false);
-    }
-
-    // unimplemented / too many resources
-    FAISS_ASSERT_FMT(false, "unimplemented k value (%d)", k);
-
-#undef RUN_PASS_DIR
-#undef RUN_PASS
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IcmEncoder.cu b/faiss/gpu_cuda/impl/IcmEncoder.cu
deleted file mode 100644
index 81f234f2b683ca859adaefc8d2cc0bf2f25799da..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IcmEncoder.cu
+++ /dev/null
@@ -1,379 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/impl/IcmEncoder.cuh>
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/impl/FaissAssert.h>
-#include <faiss/gpu/impl/L2Norm.cuh>
-#include <faiss/gpu/utils/CopyUtils.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/MatrixMult.cuh>
-#include <faiss/gpu/utils/Pair.cuh>
-#include <faiss/gpu/utils/Reductions.cuh>
-
-#include <curand_kernel.h>
-
-namespace faiss {
-namespace gpu {
-
-extern __shared__ char smem[];
-
-/** encode using iterative conditional mode
- *
- * For subcode cm of a vector, we fix the other subcodes cj (j != m)
- * and then find the optimal value of cm (cm = 1,...,K) such that
- * minimizing the objective function.
- *
- * @param uterm  precomputed unary terms, size (M, n, K)
- * @param bterm  precomputed binary terms, size (M1, M2, K1, K2)
- * @param codes  output vector encodings, size (n, M)
- * @param M      number of codebooks
- * @param K      number of codewords in a codebook
- * @param m      identify which subcode to condition on
- */
-__global__ void runIcmEncodeStep(
-        const float* uterm,
-        const float* bterm,
-        int32_t* codes,
-        int M,
-        int K,
-        int m) {
-    using KVPair = Pair<float, int>;
-
-    int id = blockIdx.x;    // each block takes care of one vector
-    int code = threadIdx.x; // each thread takes care of one possible code
-
-    // compute the objective value by look-up tables
-    KVPair obj(0.0f, code);
-    obj.k = uterm[id * K + code];
-
-#pragma unroll
-    for (int m2 = 0; m2 < M; m2++) {
-        if (m2 == m) {
-            continue;
-        }
-        int32_t code2 = codes[id * M + m2];
-        obj.k += bterm[m2 * K * K + code * K + code2];
-    }
-
-    // find the minimum objective value and the corresponding code
-    __syncthreads();
-    obj = blockReduceAll<KVPair, Min<KVPair>, false, false>(
-            obj, Min<KVPair>(), (KVPair*)smem);
-
-    if (code == 0) {
-        codes[id * M + m] = obj.v;
-    }
-}
-
-/** compute reconstruction error for each vector
- *
- * decoded_x[i] = \sum codebooks[m][codes[i][m]], m = 1,..,M
- * obj[i] = ||x[i] - decoded_x[i]||^2
- *
- * @param x      input vectors, size [n, dims]
- * @param codebooks  codebooks, size [M, K, dims]
- * @param codes  vector codes, size [n, M]
- * @param obj    output reconstruction errors, size [n]
- * @param n      number of input vectors
- * @param K      number of codewords in a codebook
- * @param M      number of codebooks
- */
-__global__ void runEvaluation(
-        const float* x,
-        const float* codebooks,
-        const int32_t* codes,
-        float* obj, // output
-        int n,
-        int M,
-        int K,
-        int dims) {
-    int id = blockIdx.x; // each block takes care of one vector
-    int d = threadIdx.x; // each thread takes care of one dimension
-    float acc = 0.0f;
-
-#pragma unroll
-    for (int m = 0; m < M; m++) {
-        int32_t code = codes[id * M + m];
-        acc += codebooks[m * K * dims + code * dims + d];
-    }
-
-    acc -= x[id * dims + d];
-    acc = acc * acc;
-
-    // sum values of all dimensions together
-    __syncthreads();
-    acc = blockReduceAllSum<float, false, false>(acc, (float*)smem);
-
-    if (d == 0) {
-        obj[id] = acc;
-    }
-}
-
-/** perturb vector codes
- *
- * repeat nperts times:
- *   codes[i][randint(0, M)] = randint(0, K)
- *
- * @param seed   random seed
- * @param codes  vector codes, size [n, M]
- * @param n      number of input vectors
- * @param M      number of codebooks
- * @param K      number of codewords in a codebook
- * @param nperts number of subcode to be perturbed in a vector
- */
-__global__ void runCodesPerturbation(
-        int seed,
-        int32_t* codes,
-        int n,
-        int M,
-        int K,
-        int nperts) {
-    // each thread takes care of one vector
-    int id = blockIdx.x * blockDim.x + threadIdx.x;
-
-    if (id >= n) {
-        return;
-    }
-
-    // we have to initialize the state
-    curandState_t state;
-    curand_init(seed, id, 0, &state);
-
-    for (int i = 0; i < nperts; i++) {
-        int pos = int(curand_uniform(&state) * M);
-        int32_t val = int32_t(curand_uniform(&state) * K);
-        codes[id * M + pos] = val;
-    }
-}
-
-/** select the best codes by reconstruction errors
- *
- * if objs[i] < best_objs[i]:
- *     best_objs[i] = objs[i]
- *     best_codes[i] = codes[i]
- *
- * @param bestCodes the best codes we've encountered, size [n, M]
- * @param bestObjs  min reconstruction errors we've encountered, size [n]
- * @param codes     input vector codes, size [n, M]
- * @param objs      reconstruction errors of input vector codes, size [n]
- * @param n         number of input vectors
- */
-__global__ void runCodesSelection(
-        int32_t* bestCodes,
-        float* bestObjs,
-        const int32_t* codes,
-        const float* objs,
-        int n,
-        int M) {
-    // each thread takes care of one vector
-    int id = blockIdx.x * blockDim.x + threadIdx.x;
-
-    if (id >= n || objs[id] >= bestObjs[id]) {
-        return;
-    }
-
-    bestObjs[id] = objs[id];
-#pragma unroll
-    for (int m = 0; m < M; m++) {
-        bestCodes[id * M + m] = codes[id * M + m];
-    }
-}
-
-/** add L2 norm of codewords in a codebook to the unary terms
- *
- * uterm[i][k] = norm[k]
- *
- * @param uterm unary terms, size [n, K]
- * @param norm  L2 norm of each codeword in a codebook, size [K]
- * @param K     number of codewords in a codebook
- */
-__global__ void runNormAddition(float* uterm, const float* norm, int K) {
-    int id = blockIdx.x;
-    int code = threadIdx.x;
-
-    uterm[id * K + code] += norm[code];
-}
-
-IcmEncoderImpl::IcmEncoderImpl(
-        int M,
-        int K,
-        int dims,
-        GpuResourcesProvider* prov,
-        int device)
-        : M(M), K(K), dims(dims), prov(prov), device(device) {
-    res = prov->getResources();
-}
-
-void IcmEncoderImpl::computeUnaryTerms(
-        float* uterm,           // output, [M, n, K]
-        const float* x,         // [n, d]
-        const float* codebooks, // [M, K, d]
-        int n) const {
-    auto stream = res->getDefaultStreamCurrentDevice();
-    auto handle = res->getBlasHandleCurrentDevice();
-
-    DeviceTensor<float, 2, true> vecs(const_cast<float*>(x), {n, dims});
-    for (int m = 0; m < M; m++) {
-        auto cPtr = const_cast<float*>(codebooks + m * K * dims);
-        auto bPtr = uterm + m * n * K;
-        DeviceTensor<float, 2, true> ci(cPtr, {K, dims});
-        DeviceTensor<float, 2, true> bi(bPtr, {n, K});
-        runMatrixMult(
-                bi, false, vecs, false, ci, true, -2.0f, 0.0f, handle, stream);
-    }
-
-    DeviceTensor<float, 2, true> c(
-            const_cast<float*>(codebooks), {M * K, dims});
-    DeviceTensor<float, 1, true> norm(
-            res.get(), makeTempAlloc(AllocType::Other, stream), {M * K});
-    runL2Norm(c, true, norm, true, stream);
-
-    for (int m = 0; m < M; m++) {
-        auto uPtr = uterm + m * n * K;
-        auto nPtr = norm.data() + m * K;
-        runNormAddition<<<n, K, 0, stream>>>(uPtr, nPtr, K);
-    }
-}
-
-void IcmEncoderImpl::computeBinaryTerms(float* bterm, const float* codebooks)
-        const {
-    auto stream = res->getDefaultStreamCurrentDevice();
-    auto handle = res->getBlasHandleCurrentDevice();
-
-    for (int m1 = 0; m1 < M; m1++) {
-        for (int m2 = 0; m2 < M; m2++) {
-            auto ptr1 = const_cast<float*>(codebooks + m1 * K * dims);
-            auto ptr2 = const_cast<float*>(codebooks + m2 * K * dims);
-            auto ptr3 = bterm + m1 * M * K * K + m2 * K * K;
-            DeviceTensor<float, 2, true> c1(ptr1, {K, dims});
-            DeviceTensor<float, 2, true> c2(ptr2, {K, dims});
-            DeviceTensor<float, 2, true> b(ptr3, {K, K});
-            runMatrixMult(
-                    b, false, c1, false, c2, true, 2.0f, 0.0f, handle, stream);
-        }
-    }
-}
-
-void IcmEncoderImpl::setBinaryTerm(const float* codebooksHost) {
-    DeviceScope scope(device);
-    auto device = getCurrentDevice();
-    auto stream = res->getDefaultStreamCurrentDevice();
-
-    // copy from host to device memory
-    codebooks = toDeviceNonTemporary<float, 3>(
-            res.get(),
-            device,
-            const_cast<float*>(codebooksHost),
-            stream,
-            {M, K, dims});
-    bterm = DeviceTensor<float, 4, true>(
-            res.get(), makeDevAlloc(AllocType::Other, stream), {M, M, K, K});
-    computeBinaryTerms(bterm.data(), codebooks.data());
-}
-
-void IcmEncoderImpl::encode(
-        int32_t* codesHost,
-        const float* xHost,
-        const float* codebooksHost,
-        std::mt19937& gen,
-        int n,
-        int nperts,
-        int ilsIters,
-        int icmIters) const {
-    DeviceScope scope(device);
-    auto device = getCurrentDevice();
-    auto stream = res->getDefaultStreamCurrentDevice();
-
-    // copy from host to device memory
-    auto codes = toDeviceTemporary<int32_t, 2>(
-            res.get(), device, const_cast<int32_t*>(codesHost), stream, {n, M});
-    auto x = toDeviceTemporary<float, 2>(
-            res.get(), device, const_cast<float*>(xHost), stream, {n, dims});
-
-    // compute unary terms
-    DeviceTensor<float, 3, true> uterm(
-            res.get(), makeTempAlloc(AllocType::Other, stream), {M, n, K});
-    computeUnaryTerms(uterm.data(), x.data(), codebooks.data(), n);
-
-    DeviceTensor<int32_t, 2, true> bestCodes(
-            res.get(), makeTempAlloc(AllocType::Other, stream), {n, M});
-    fromDevice<int32_t, 2>(codes, bestCodes.data(), stream);
-
-    DeviceTensor<float, 1, true> bestObjs(
-            res.get(), makeTempAlloc(AllocType::Other, stream), {n});
-
-    DeviceTensor<float, 1, true> objs(
-            res.get(), makeTempAlloc(AllocType::Other, stream), {n});
-
-    // compute how much shared memory we need
-    const int evaluateSmem = sizeof(float) * (dims + kWarpSize - 1) / kWarpSize;
-    const int encodeSmem =
-            sizeof(Pair<float, int>) * (K + kWarpSize - 1) / kWarpSize;
-
-    // compute the reconstruction error for each vector
-    runEvaluation<<<n, dims, evaluateSmem, stream>>>(
-            x.data(),
-            codebooks.data(),
-            codes.data(),
-            bestObjs.data(),
-            n,
-            M,
-            K,
-            dims);
-
-    int blockSize = 256;
-    int numBlocks = (n + blockSize - 1) / blockSize;
-
-    for (int i = 0; i < ilsIters; i++) {
-        runCodesPerturbation<<<numBlocks, blockSize, 0, stream>>>(
-                gen(), codes.data(), n, M, K, nperts);
-
-        // perform icm encoding
-        for (int j = 0; j < icmIters; j++) {
-            for (int m = 0; m < M; m++) {
-                runIcmEncodeStep<<<n, K, encodeSmem, stream>>>(
-                        uterm[m].data(),
-                        bterm[m].data(),
-                        codes.data(),
-                        M,
-                        K,
-                        m);
-            }
-        }
-
-        // compute the reconstruction error for each vector given codes
-        runEvaluation<<<n, dims, evaluateSmem, stream>>>(
-                x.data(),
-                codebooks.data(),
-                codes.data(),
-                objs.data(),
-                n,
-                M,
-                K,
-                dims);
-
-        // if objs[i] < best_objs[i], replace best_codes[i] with codes[i]
-        runCodesSelection<<<numBlocks, blockSize, 0, stream>>>(
-                bestCodes.data(),
-                bestObjs.data(),
-                codes.data(),
-                objs.data(),
-                n,
-                M);
-
-        codes.copyFrom(bestCodes, stream);
-    }
-
-    // copy back to host memory
-    fromDevice<int32_t, 2>(bestCodes, codesHost, stream);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/IcmEncoder.cuh b/faiss/gpu_cuda/impl/IcmEncoder.cuh
deleted file mode 100644
index 9577aae8b5af7313f045e59cf5bb0f5cfc40d41f..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/IcmEncoder.cuh
+++ /dev/null
@@ -1,79 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-
-#include <random>
-
-namespace faiss {
-namespace gpu {
-
-struct IcmEncoderImpl {
-    int M;    ///< number of codebooks
-    int K;    ///< number of codewords in a codebook
-    int dims; ///< dimensions of a codeword
-
-    GpuResourcesProvider* prov;
-    std::shared_ptr<GpuResources> res;
-    int device;
-
-    DeviceTensor<float, 4, true> bterm;     ///< bianry terms, size [M, M, K, K]
-    DeviceTensor<float, 3, true> codebooks; ///< codebooks, size [M, K, dims]
-
-    IcmEncoderImpl(
-            int M,
-            int K,
-            int dims,
-            GpuResourcesProvider* prov,
-            int device);
-
-    ~IcmEncoderImpl() {}
-
-    ///< copy codebooks to device memory and compute unary terms
-    void setBinaryTerm(const float* codebooks);
-
-    /** Compute unary terms.
-     *
-     * uterm[i] = x * codebook[i]^T, i = 1,...,M
-     *
-     * @param uterm     output unary terms, size [M, n, K]
-     * @param x         input vectors, size [n, dims]
-     * @param codebooks codebooks, size [M, K, dims]
-     * @param n         number of input vectors
-     */
-    void computeUnaryTerms(
-            float* bterm,
-            const float* x,
-            const float* codebooks,
-            int n) const;
-
-    /** Compute binary terms.
-     *
-     * bterm[i][j] = codebooks[i] * codebooks[j]^T. i, j = 1,...,M
-     *
-     * @param bterm     output binary terms, size [M, M, K, K]
-     * @param codebooks codebooks, size [M, K, dims]
-     */
-    void computeBinaryTerms(float* bterm, const float* codebooks) const;
-
-    ///< icm encode method
-    void encode(
-            int32_t* codes,
-            const float* x,
-            const float* codebooks,
-            std::mt19937& gen,
-            int n,
-            int nperts,
-            int ilsIters,
-            int icmIters) const;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/InterleavedCodes.cpp b/faiss/gpu_cuda/impl/InterleavedCodes.cpp
deleted file mode 100644
index 801ff72180cbe865a6d9a5a315b38bd36c1ff1ad..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/InterleavedCodes.cpp
+++ /dev/null
@@ -1,559 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/impl/InterleavedCodes.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/impl/FaissAssert.h>
-
-namespace faiss {
-namespace gpu {
-
-inline uint8_t unpack5(int i, uint8_t vLower, uint8_t vUpper) {
-    uint8_t v = 0;
-
-    // lsb     ...    msb
-    // 0: 0 0 0 0 0 1 1 1
-    // 1: 1 1 2 2 2 2 2 3
-    // 2: 3 3 3 3 4 4 4 4
-    // 3: 4 5 5 5 5 5 6 6
-    // 4: 6 6 6 7 7 7 7 7
-    switch (i % 8) {
-        case 0:
-            // 5 lsbs of lower
-            v = vLower & 0x1f;
-            break;
-        case 1:
-            // 3 msbs of lower as v lsbs
-            // 2 msbs of upper as v msbs
-            v = (vLower >> 5) | ((vUpper & 0x3) << 3);
-            break;
-        case 2:
-            // 5 of lower
-            v = (vLower >> 2) & 0x1f;
-            break;
-        case 3:
-            // 1 msbs of lower as v lsbs
-            // 4 lsbs of upper as v msbs
-            v = (vLower >> 7) | ((vUpper & 0xf) << 1);
-            break;
-        case 4:
-            // 4 msbs of lower as v lsbs
-            // 1 lsbs of upper as v msbs
-            v = (vLower >> 4) | ((vUpper & 0x1) << 4);
-            break;
-        case 5:
-            // 5 of lower
-            v = (vLower >> 1) & 0x1f;
-            break;
-        case 6:
-            // 2 msbs of lower as v lsbs
-            // 3 lsbs of upper as v msbs
-            v = (vLower >> 6) | ((vUpper & 0x7) << 2);
-            break;
-        case 7:
-            // 5 of lower
-            v = (vLower >> 3);
-            break;
-    }
-
-    return v;
-}
-
-inline uint8_t unpack6(int i, uint8_t vLower, uint8_t vUpper) {
-    uint8_t v = 0;
-
-    switch (i % 4) {
-        case 0:
-            // 6 lsbs of lower
-            v = vLower & 0x3f;
-            break;
-        case 1:
-            // 2 msbs of lower as v lsbs
-            // 4 lsbs of upper as v msbs
-            v = (vLower >> 6) | ((vUpper & 0xf) << 2);
-            break;
-        case 2:
-            // 4 msbs of lower as v lsbs
-            // 2 lsbs of upper as v msbs
-            v = (vLower >> 4) | ((vUpper & 0x3) << 4);
-            break;
-        case 3:
-            // 6 msbs of lower
-            v = (vLower >> 2);
-            break;
-    }
-
-    return v;
-}
-
-std::vector<uint8_t> unpackNonInterleaved(
-        std::vector<uint8_t> data,
-        int numVecs,
-        int dims,
-        int bitsPerCode) {
-    int srcVecSize = utils::divUp(dims * bitsPerCode, 8);
-    FAISS_ASSERT(data.size() == numVecs * srcVecSize);
-
-    if (bitsPerCode == 8 || bitsPerCode == 16 || bitsPerCode == 32) {
-        // nothing to do
-        return data;
-    }
-
-    // bit codes padded to whole bytes
-    std::vector<uint8_t> out(numVecs * dims * utils::divUp(bitsPerCode, 8));
-
-    if (bitsPerCode == 4) {
-#pragma omp parallel for
-        for (int i = 0; i < numVecs; ++i) {
-            for (int j = 0; j < dims; ++j) {
-                int srcIdx = i * srcVecSize + (j / 2);
-                FAISS_ASSERT(srcIdx < data.size());
-
-                uint8_t v = data[srcIdx];
-                v = (j % 2 == 0) ? v & 0xf : v >> 4;
-
-                out[i * dims + j] = v;
-            }
-        }
-    } else if (bitsPerCode == 5) {
-#pragma omp parallel for
-        for (int i = 0; i < numVecs; ++i) {
-            for (int j = 0; j < dims; ++j) {
-                int lo = i * srcVecSize + (j * 5) / 8;
-                int hi = lo + 1;
-
-                FAISS_ASSERT(lo < data.size());
-                FAISS_ASSERT(hi <= data.size());
-
-                auto vLower = data[lo];
-                auto vUpper = hi < data.size() ? data[hi] : 0;
-
-                out[i * dims + j] = unpack5(j, vLower, vUpper);
-            }
-        }
-    } else if (bitsPerCode == 6) {
-#pragma omp parallel for
-        for (int i = 0; i < numVecs; ++i) {
-            for (int j = 0; j < dims; ++j) {
-                int lo = i * srcVecSize + (j * 6) / 8;
-                int hi = lo + 1;
-
-                FAISS_ASSERT(lo < data.size());
-                FAISS_ASSERT(hi <= data.size());
-
-                auto vLower = data[lo];
-                auto vUpper = hi < data.size() ? data[hi] : 0;
-
-                out[i * dims + j] = unpack6(j, vLower, vUpper);
-            }
-        }
-    } else {
-        // unhandled
-        FAISS_ASSERT(false);
-    }
-
-    return out;
-}
-
-template <typename T>
-void unpackInterleavedWord(
-        const T* in,
-        T* out,
-        int numVecs,
-        int dims,
-        int bitsPerCode) {
-    int wordsPerDimBlock = 32 * bitsPerCode / (8 * sizeof(T));
-    int wordsPerBlock = wordsPerDimBlock * dims;
-    int numBlocks = utils::divUp(numVecs, 32);
-
-#pragma omp parallel for
-    for (int i = 0; i < numVecs; ++i) {
-        int block = i / 32;
-        FAISS_ASSERT(block < numBlocks);
-        int lane = i % 32;
-
-        for (int j = 0; j < dims; ++j) {
-            int srcOffset = block * wordsPerBlock + j * wordsPerDimBlock + lane;
-            out[i * dims + j] = in[srcOffset];
-        }
-    }
-}
-
-std::vector<uint8_t> unpackInterleaved(
-        std::vector<uint8_t> data,
-        int numVecs,
-        int dims,
-        int bitsPerCode) {
-    int bytesPerDimBlock = 32 * bitsPerCode / 8;
-    int bytesPerBlock = bytesPerDimBlock * dims;
-    int numBlocks = utils::divUp(numVecs, 32);
-    size_t totalSize = (size_t)bytesPerBlock * numBlocks;
-    FAISS_ASSERT(data.size() == totalSize);
-
-    // bit codes padded to whole bytes
-    std::vector<uint8_t> out(numVecs * dims * utils::divUp(bitsPerCode, 8));
-
-    if (bitsPerCode == 8) {
-        unpackInterleavedWord<uint8_t>(
-                data.data(), out.data(), numVecs, dims, bitsPerCode);
-    } else if (bitsPerCode == 16) {
-        unpackInterleavedWord<uint16_t>(
-                (uint16_t*)data.data(),
-                (uint16_t*)out.data(),
-                numVecs,
-                dims,
-                bitsPerCode);
-    } else if (bitsPerCode == 32) {
-        unpackInterleavedWord<uint32_t>(
-                (uint32_t*)data.data(),
-                (uint32_t*)out.data(),
-                numVecs,
-                dims,
-                bitsPerCode);
-    } else if (bitsPerCode == 4) {
-#pragma omp parallel for
-        for (int i = 0; i < numVecs; ++i) {
-            int block = i / 32;
-            int lane = i % 32;
-
-            int word = lane / 2;
-            int subWord = lane % 2;
-
-            for (int j = 0; j < dims; ++j) {
-                auto v =
-                        data[block * bytesPerBlock + j * bytesPerDimBlock +
-                             word];
-
-                v = (subWord == 0) ? v & 0xf : v >> 4;
-                out[i * dims + j] = v;
-            }
-        }
-    } else if (bitsPerCode == 5) {
-#pragma omp parallel for
-        for (int i = 0; i < numVecs; ++i) {
-            int block = i / 32;
-            int blockVector = i % 32;
-
-            for (int j = 0; j < dims; ++j) {
-                uint8_t* dimBlock =
-                        &data[block * bytesPerBlock + j * bytesPerDimBlock];
-
-                int lo = (blockVector * 5) / 8;
-                int hi = lo + 1;
-
-                FAISS_ASSERT(lo < bytesPerDimBlock);
-                FAISS_ASSERT(hi <= bytesPerDimBlock);
-
-                auto vLower = dimBlock[lo];
-                auto vUpper = hi < bytesPerDimBlock ? dimBlock[hi] : 0;
-
-                out[i * dims + j] = unpack5(blockVector, vLower, vUpper);
-            }
-        }
-    } else if (bitsPerCode == 6) {
-#pragma omp parallel for
-        for (int i = 0; i < numVecs; ++i) {
-            int block = i / 32;
-            int blockVector = i % 32;
-
-            for (int j = 0; j < dims; ++j) {
-                uint8_t* dimBlock =
-                        &data[block * bytesPerBlock + j * bytesPerDimBlock];
-
-                int lo = (blockVector * 6) / 8;
-                int hi = lo + 1;
-
-                FAISS_ASSERT(lo < bytesPerDimBlock);
-                FAISS_ASSERT(hi <= bytesPerDimBlock);
-
-                auto vLower = dimBlock[lo];
-                auto vUpper = hi < bytesPerDimBlock ? dimBlock[hi] : 0;
-
-                out[i * dims + j] = unpack6(blockVector, vLower, vUpper);
-            }
-        }
-    } else {
-        // unimplemented
-        FAISS_ASSERT(false);
-    }
-
-    return out;
-}
-
-inline uint8_t pack5(int i, uint8_t lo, uint8_t hi, uint8_t hi2) {
-    FAISS_ASSERT((lo & 0x1f) == lo);
-    FAISS_ASSERT((hi & 0x1f) == hi);
-    FAISS_ASSERT((hi2 & 0x1f) == hi2);
-
-    uint8_t v = 0;
-
-    // lsb     ...    msb
-    // 0: 0 0 0 0 0 1 1 1
-    // 1: 1 1 2 2 2 2 2 3
-    // 2: 3 3 3 3 4 4 4 4
-    // 3: 4 5 5 5 5 5 6 6
-    // 4: 6 6 6 7 7 7 7 7
-    switch (i % 5) {
-        case 0:
-            // 5 msbs of lower as vOut lsbs
-            // 3 lsbs of upper as vOut msbs
-            v = (lo & 0x1f) | (hi << 5);
-            break;
-        case 1:
-            // 2 msbs of lower as vOut lsbs
-            // 5 lsbs of upper as vOut msbs
-            // 1 lsbs of upper2 as vOut msb
-            v = (lo >> 3) | (hi << 2) | (hi2 << 7);
-            break;
-        case 2:
-            // 4 msbs of lower as vOut lsbs
-            // 4 lsbs of upper as vOut msbs
-            v = (lo >> 1) | (hi << 4);
-            break;
-        case 3:
-            // 1 msbs of lower as vOut lsbs
-            // 5 lsbs of upper as vOut msbs
-            // 2 lsbs of upper2 as vOut msb
-            v = (lo >> 4) | (hi << 1) | (hi2 << 6);
-            break;
-        case 4:
-            // 3 msbs of lower as vOut lsbs
-            // 5 lsbs of upper as vOut msbs
-            v = (lo >> 2) | (hi << 3);
-            break;
-    }
-
-    return v;
-}
-
-inline uint8_t pack6(int i, uint8_t lo, uint8_t hi) {
-    FAISS_ASSERT((lo & 0x3f) == lo);
-    FAISS_ASSERT((hi & 0x3f) == hi);
-
-    uint8_t v = 0;
-
-    // lsb     ...    msb
-    // 0: 0 0 0 0 0 0 1 1
-    // 1: 1 1 1 1 2 2 2 2
-    // 2: 2 2 3 3 3 3 3 3
-    switch (i % 3) {
-        case 0:
-            // 6 msbs of lower as vOut lsbs
-            // 2 lsbs of upper as vOut msbs
-            v = (lo & 0x3f) | (hi << 6);
-            break;
-        case 1:
-            // 4 msbs of lower as vOut lsbs
-            // 4 lsbs of upper as vOut msbs
-            v = (lo >> 2) | (hi << 4);
-            break;
-        case 2:
-            // 2 msbs of lower as vOut lsbs
-            // 6 lsbs of upper as vOut msbs
-            v = (lo >> 4) | (hi << 2);
-            break;
-    }
-
-    return v;
-}
-
-std::vector<uint8_t> packNonInterleaved(
-        std::vector<uint8_t> data,
-        int numVecs,
-        int dims,
-        int bitsPerCode) {
-    // bit codes padded to whole bytes
-    FAISS_ASSERT(data.size() == numVecs * dims * utils::divUp(bitsPerCode, 8));
-
-    if (bitsPerCode == 8 || bitsPerCode == 16 || bitsPerCode == 32) {
-        // nothing to do, whole words are already where they need to be
-        return data;
-    }
-
-    // bits packed into a whole number of bytes
-    int bytesPerVec = utils::divUp(dims * bitsPerCode, 8);
-
-    std::vector<uint8_t> out(numVecs * bytesPerVec);
-
-    if (bitsPerCode == 4) {
-#pragma omp parallel for
-        for (int i = 0; i < numVecs; ++i) {
-            for (int j = 0; j < bytesPerVec; ++j) {
-                int dimLo = j * 2;
-                int dimHi = dimLo + 1;
-                FAISS_ASSERT(dimLo < dims);
-                FAISS_ASSERT(dimHi <= dims);
-
-                uint8_t lo = data[i * dims + dimLo];
-                uint8_t hi = dimHi < dims ? data[i * dims + dimHi] : 0;
-
-                out[i * bytesPerVec + j] = (hi << 4) | (lo & 0xf);
-            }
-        }
-    } else if (bitsPerCode == 5) {
-#pragma omp parallel for
-        for (int i = 0; i < numVecs; ++i) {
-            for (int j = 0; j < bytesPerVec; ++j) {
-                int dimLo = (j * 8) / 5;
-                int dimHi = dimLo + 1;
-                int dimHi2 = dimHi + 1;
-                FAISS_ASSERT(dimLo < dims);
-                FAISS_ASSERT(dimHi <= dims);
-                FAISS_ASSERT(dimHi <= dims + 1);
-
-                uint8_t lo = data[i * dims + dimLo];
-                uint8_t hi = dimHi < dims ? data[i * dims + dimHi] : 0;
-                uint8_t hi2 = dimHi2 < dims ? data[i * dims + dimHi2] : 0;
-
-                out[i * bytesPerVec + j] = pack5(j, lo, hi, hi2);
-            }
-        }
-    } else if (bitsPerCode == 6) {
-#pragma omp parallel for
-        for (int i = 0; i < numVecs; ++i) {
-            for (int j = 0; j < bytesPerVec; ++j) {
-                int dimLo = (j * 8) / 6;
-                int dimHi = dimLo + 1;
-                FAISS_ASSERT(dimLo < dims);
-                FAISS_ASSERT(dimHi <= dims);
-
-                uint8_t lo = data[i * dims + dimLo];
-                uint8_t hi = dimHi < dims ? data[i * dims + dimHi] : 0;
-
-                out[i * bytesPerVec + j] = pack6(j, lo, hi);
-            }
-        }
-    } else {
-        // unhandled
-        FAISS_ASSERT(false);
-    }
-
-    return out;
-}
-
-template <typename T>
-void packInterleavedWord(
-        const T* in,
-        T* out,
-        int numVecs,
-        int dims,
-        int bitsPerCode) {
-    int wordsPerDimBlock = 32 * bitsPerCode / (8 * sizeof(T));
-    int wordsPerBlock = wordsPerDimBlock * dims;
-    int numBlocks = utils::divUp(numVecs, 32);
-
-    // We're guaranteed that all other slots not filled by the vectors present
-    // are initialized to zero (from the vector constructor in packInterleaved)
-#pragma omp parallel for
-    for (int i = 0; i < numVecs; ++i) {
-        int block = i / 32;
-        FAISS_ASSERT(block < numBlocks);
-        int lane = i % 32;
-
-        for (int j = 0; j < dims; ++j) {
-            int dstOffset = block * wordsPerBlock + j * wordsPerDimBlock + lane;
-            out[dstOffset] = in[i * dims + j];
-        }
-    }
-}
-
-std::vector<uint8_t> packInterleaved(
-        std::vector<uint8_t> data,
-        int numVecs,
-        int dims,
-        int bitsPerCode) {
-    int bytesPerDimBlock = 32 * bitsPerCode / 8;
-    int bytesPerBlock = bytesPerDimBlock * dims;
-    int numBlocks = utils::divUp(numVecs, 32);
-    size_t totalSize = (size_t)bytesPerBlock * numBlocks;
-
-    // bit codes padded to whole bytes
-    FAISS_ASSERT(data.size() == numVecs * dims * utils::divUp(bitsPerCode, 8));
-
-    // packs based on blocks
-    std::vector<uint8_t> out(totalSize, 0);
-
-    if (bitsPerCode == 8) {
-        packInterleavedWord<uint8_t>(
-                data.data(), out.data(), numVecs, dims, bitsPerCode);
-    } else if (bitsPerCode == 16) {
-        packInterleavedWord<uint16_t>(
-                (uint16_t*)data.data(),
-                (uint16_t*)out.data(),
-                numVecs,
-                dims,
-                bitsPerCode);
-    } else if (bitsPerCode == 32) {
-        packInterleavedWord<uint32_t>(
-                (uint32_t*)data.data(),
-                (uint32_t*)out.data(),
-                numVecs,
-                dims,
-                bitsPerCode);
-    } else if (bitsPerCode == 4) {
-#pragma omp parallel for
-        for (int i = 0; i < numBlocks; ++i) {
-            for (int j = 0; j < dims; ++j) {
-                for (int k = 0; k < bytesPerDimBlock; ++k) {
-                    int loVec = i * 32 + k * 2;
-                    int hiVec = loVec + 1;
-
-                    uint8_t lo = loVec < numVecs ? data[loVec * dims + j] : 0;
-                    uint8_t hi = hiVec < numVecs ? data[hiVec * dims + j] : 0;
-
-                    out[i * bytesPerBlock + j * bytesPerDimBlock + k] =
-                            (hi << 4) | (lo & 0xf);
-                }
-            }
-        }
-    } else if (bitsPerCode == 5) {
-#pragma omp parallel for
-        for (int i = 0; i < numBlocks; ++i) {
-            for (int j = 0; j < dims; ++j) {
-                for (int k = 0; k < bytesPerDimBlock; ++k) {
-                    // What input vectors we are pulling from
-                    int loVec = i * 32 + (k * 8) / 5;
-                    int hiVec = loVec + 1;
-                    int hiVec2 = hiVec + 1;
-
-                    uint8_t lo = loVec < numVecs ? data[loVec * dims + j] : 0;
-                    uint8_t hi = hiVec < numVecs ? data[hiVec * dims + j] : 0;
-                    uint8_t hi2 =
-                            hiVec2 < numVecs ? data[hiVec2 * dims + j] : 0;
-
-                    out[i * bytesPerBlock + j * bytesPerDimBlock + k] =
-                            pack5(k, lo, hi, hi2);
-                }
-            }
-        }
-    } else if (bitsPerCode == 6) {
-#pragma omp parallel for
-        for (int i = 0; i < numBlocks; ++i) {
-            for (int j = 0; j < dims; ++j) {
-                for (int k = 0; k < bytesPerDimBlock; ++k) {
-                    // What input vectors we are pulling from
-                    int loVec = i * 32 + (k * 8) / 6;
-                    int hiVec = loVec + 1;
-
-                    uint8_t lo = loVec < numVecs ? data[loVec * dims + j] : 0;
-                    uint8_t hi = hiVec < numVecs ? data[hiVec * dims + j] : 0;
-
-                    out[i * bytesPerBlock + j * bytesPerDimBlock + k] =
-                            pack6(k, lo, hi);
-                }
-            }
-        }
-    } else {
-        // unimplemented
-        FAISS_ASSERT(false);
-    }
-
-    return out;
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/InterleavedCodes.h b/faiss/gpu_cuda/impl/InterleavedCodes.h
deleted file mode 100644
index 2014f7ec894bea5d4aeb4f544214965e86ce798c..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/InterleavedCodes.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <stdint.h>
-#include <vector>
-
-// Utilities for bit packing and unpacking CPU non-interleaved and GPU
-// interleaved by 32 encodings
-namespace faiss {
-namespace gpu {
-
-// Unpacks arbitrary bitwidth codes to a whole number of bytes per code
-// The layout of the input is (v0 d0)(v0 d1) ... (v0 dD)(v1 d0) ...
-// (bit packed)
-// The layout of the output is the same (byte packed to roundUp(bitsPerCode, 8)
-// / 8 bytes)
-std::vector<uint8_t> unpackNonInterleaved(
-        std::vector<uint8_t> data,
-        int numVecs,
-        int dims,
-        int bitsPerCode);
-
-// Unpacks arbitrary bitwidth codes to a whole number of bytes per scalar code
-// The layout of the input is (v0 d0)(v1 d0) ... (v31 d0)(v0 d1) ...
-// (bit packed)
-// The layout of the input is (v0 d0)(v0 d1) ... (v0 dD)(v1 d0) ...
-// (byte packed)
-std::vector<uint8_t> unpackInterleaved(
-        std::vector<uint8_t> data,
-        int numVecs,
-        int dims,
-        int bitsPerCode);
-
-// Packs data in the byte packed non-interleaved form to bit packed
-// non-interleaved form
-std::vector<uint8_t> packNonInterleaved(
-        std::vector<uint8_t> data,
-        int numVecs,
-        int dims,
-        int bitsPerCode);
-
-// Packs data in the byte packed non-interleaved form to bit packed
-// interleaved form
-std::vector<uint8_t> packInterleaved(
-        std::vector<uint8_t> data,
-        int numVecs,
-        int dims,
-        int bitsPerCode);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/L2Norm.cu b/faiss/gpu_cuda/impl/L2Norm.cu
deleted file mode 100644
index 4341a6d0164e1c476d6ed06064c733df20e26a34..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/L2Norm.cu
+++ /dev/null
@@ -1,363 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/impl/FaissAssert.h>
-#include <faiss/gpu/impl/L2Norm.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-#include <faiss/gpu/utils/MathOperators.cuh>
-#include <faiss/gpu/utils/PtxUtils.cuh>
-#include <faiss/gpu/utils/Reductions.cuh>
-
-#include <algorithm>
-
-namespace faiss {
-namespace gpu {
-
-// Input: (batch x dim)
-// Output: (batch norm)
-// Done under the presumption that the dimension size is not too large
-// (<10k or so), since there wouldn't be enough parallelism applying a
-// single block to the problem. Also that each vector is large enough
-// (>64), since a single block works on multiple rows' norms at the
-// same time.
-// T: the type we are doing the math in (e.g., float, half)
-// TVec: the potentially vectorized type we are loading in (e.g.,
-// float4, half2)
-template <
-        typename T,
-        typename TVec,
-        typename IndexType,
-        int RowTileSize,
-        bool NormLoop,
-        bool NormSquared>
-__global__ void l2NormRowMajor(
-        Tensor<TVec, 2, true, IndexType> input,
-        Tensor<float, 1, true, IndexType> output) {
-    extern __shared__ char smemByte[]; // #warps * RowTileSize elements
-    float* smem = (float*)smemByte;
-
-    IndexType numWarps = utils::divUp(blockDim.x, kWarpSize);
-    IndexType laneId = getLaneId();
-    IndexType warpId = threadIdx.x / kWarpSize;
-
-    bool lastRowTile = (blockIdx.x == (gridDim.x - 1));
-    IndexType rowStart = RowTileSize * blockIdx.x;
-    // accumulate in f32
-    float rowNorm[RowTileSize];
-
-    if (lastRowTile) {
-        // We are handling the very end of the input matrix rows
-        for (IndexType row = 0; row < input.getSize(0) - rowStart; ++row) {
-            if (NormLoop) {
-                rowNorm[0] = 0;
-
-                for (IndexType col = threadIdx.x; col < input.getSize(1);
-                     col += blockDim.x) {
-                    TVec val = input[rowStart + row][col];
-                    val = Math<TVec>::mul(val, val);
-                    rowNorm[0] = rowNorm[0] + Math<TVec>::reduceAdd(val);
-                }
-            } else {
-                TVec val = input[rowStart + row][threadIdx.x];
-                val = Math<TVec>::mul(val, val);
-                rowNorm[0] = Math<TVec>::reduceAdd(val);
-            }
-
-            rowNorm[0] = warpReduceAllSum(rowNorm[0]);
-            if (laneId == 0) {
-                smem[row * numWarps + warpId] = rowNorm[0];
-            }
-        }
-    } else {
-        // We are guaranteed that all RowTileSize rows are available in
-        // [rowStart, rowStart + RowTileSize)
-
-        if (NormLoop) {
-            // A single block of threads is not big enough to span each
-            // vector
-            TVec tmp[RowTileSize];
-
-#pragma unroll
-            for (int row = 0; row < RowTileSize; ++row) {
-                rowNorm[row] = 0;
-            }
-
-            for (IndexType col = threadIdx.x; col < input.getSize(1);
-                 col += blockDim.x) {
-#pragma unroll
-                for (int row = 0; row < RowTileSize; ++row) {
-                    tmp[row] = input[rowStart + row][col];
-                }
-
-#pragma unroll
-                for (int row = 0; row < RowTileSize; ++row) {
-                    tmp[row] = Math<TVec>::mul(tmp[row], tmp[row]);
-                }
-
-#pragma unroll
-                for (int row = 0; row < RowTileSize; ++row) {
-                    rowNorm[row] =
-                            rowNorm[row] + Math<TVec>::reduceAdd(tmp[row]);
-                }
-            }
-        } else {
-            TVec tmp[RowTileSize];
-
-            // A block of threads is the exact size of the vector
-#pragma unroll
-            for (int row = 0; row < RowTileSize; ++row) {
-                tmp[row] = input[rowStart + row][threadIdx.x];
-            }
-
-#pragma unroll
-            for (int row = 0; row < RowTileSize; ++row) {
-                tmp[row] = Math<TVec>::mul(tmp[row], tmp[row]);
-            }
-
-#pragma unroll
-            for (int row = 0; row < RowTileSize; ++row) {
-                rowNorm[row] = Math<TVec>::reduceAdd(tmp[row]);
-            }
-        }
-
-        // Sum up all parts in each warp
-#pragma unroll
-        for (int row = 0; row < RowTileSize; ++row) {
-            rowNorm[row] = warpReduceAllSum(rowNorm[row]);
-        }
-
-        if (laneId == 0) {
-#pragma unroll
-            for (int row = 0; row < RowTileSize; ++row) {
-                smem[row * numWarps + warpId] = rowNorm[row];
-            }
-        }
-    }
-
-    __syncthreads();
-
-    // Sum across warps
-    if (warpId == 0) {
-#pragma unroll
-        for (int row = 0; row < RowTileSize; ++row) {
-            rowNorm[row] =
-                    laneId < numWarps ? smem[row * numWarps + laneId] : 0;
-        }
-
-#pragma unroll
-        for (int row = 0; row < RowTileSize; ++row) {
-            rowNorm[row] = warpReduceAllSum(rowNorm[row]);
-        }
-
-        // Write out answer
-        if (laneId == 0) {
-#pragma unroll
-            for (int row = 0; row < RowTileSize; ++row) {
-                int outCol = rowStart + row;
-
-                if (lastRowTile) {
-                    if (outCol < output.getSize(0)) {
-                        output[outCol] = NormSquared
-                                ? ConvertTo<float>::to(rowNorm[row])
-                                : sqrtf(ConvertTo<float>::to(rowNorm[row]));
-                    }
-                } else {
-                    output[outCol] = NormSquared
-                            ? ConvertTo<float>::to(rowNorm[row])
-                            : sqrtf(ConvertTo<float>::to(rowNorm[row]));
-                }
-            }
-        }
-    }
-}
-
-// Input: (dim x batch)
-// Output: (batch norm)
-// Handles the case where `input` is column major. A single thread calculates
-// the norm of each vector instead of a block-wide reduction.
-template <typename T, typename IndexType, bool NormSquared>
-__global__ void l2NormColMajor(
-        Tensor<T, 2, true, IndexType> input,
-        Tensor<float, 1, true, IndexType> output) {
-    // grid-stride loop to handle all batch elements
-    for (IndexType batch = blockIdx.x * blockDim.x + threadIdx.x;
-         batch < input.getSize(1);
-         batch += gridDim.x * blockDim.x) {
-        float sum = 0;
-
-        // This is still a coalesced load from the memory
-        for (IndexType dim = 0; dim < input.getSize(0); ++dim) {
-            // Just do the math in float32, even if the input is float16
-            float v = ConvertTo<float>::to(input[dim][batch]);
-            sum += v * v;
-        }
-
-        if (!NormSquared) {
-            sum = sqrtf(sum);
-        }
-
-        output[batch] = ConvertTo<float>::to(sum);
-    }
-}
-
-template <typename T, typename TVec, typename IndexType>
-void runL2Norm(
-        Tensor<T, 2, true, IndexType>& input,
-        bool inputRowMajor,
-        Tensor<float, 1, true, IndexType>& output,
-        bool normSquared,
-        cudaStream_t stream) {
-    IndexType maxThreads = (IndexType)getMaxThreadsCurrentDevice();
-    constexpr int rowTileSize = 8;
-
-#define RUN_L2_ROW_MAJOR(TYPE_T, TYPE_TVEC, INPUT)                            \
-    do {                                                                      \
-        if (normLoop) {                                                       \
-            if (normSquared) {                                                \
-                l2NormRowMajor<                                               \
-                        TYPE_T,                                               \
-                        TYPE_TVEC,                                            \
-                        IndexType,                                            \
-                        rowTileSize,                                          \
-                        true,                                                 \
-                        true><<<grid, block, smem, stream>>>(INPUT, output);  \
-            } else {                                                          \
-                l2NormRowMajor<                                               \
-                        TYPE_T,                                               \
-                        TYPE_TVEC,                                            \
-                        IndexType,                                            \
-                        rowTileSize,                                          \
-                        true,                                                 \
-                        false><<<grid, block, smem, stream>>>(INPUT, output); \
-            }                                                                 \
-        } else {                                                              \
-            if (normSquared) {                                                \
-                l2NormRowMajor<                                               \
-                        TYPE_T,                                               \
-                        TYPE_TVEC,                                            \
-                        IndexType,                                            \
-                        rowTileSize,                                          \
-                        false,                                                \
-                        true><<<grid, block, smem, stream>>>(INPUT, output);  \
-            } else {                                                          \
-                l2NormRowMajor<                                               \
-                        TYPE_T,                                               \
-                        TYPE_TVEC,                                            \
-                        IndexType,                                            \
-                        rowTileSize,                                          \
-                        false,                                                \
-                        false><<<grid, block, smem, stream>>>(INPUT, output); \
-            }                                                                 \
-        }                                                                     \
-    } while (0)
-
-    if (inputRowMajor) {
-        //
-        // Row-major kernel
-        ///
-
-        if (input.template canCastResize<TVec>()) {
-            // Can load using the vectorized type
-            auto inputV = input.template castResize<TVec>();
-
-            auto dim = inputV.getSize(1);
-            bool normLoop = dim > maxThreads;
-            auto numThreads = std::min(dim, maxThreads);
-
-            auto grid = dim3(utils::divUp(inputV.getSize(0), rowTileSize));
-            auto block = dim3(numThreads);
-
-            auto smem = sizeof(float) * rowTileSize *
-                    utils::divUp(numThreads, kWarpSize);
-
-            RUN_L2_ROW_MAJOR(T, TVec, inputV);
-        } else {
-            // Can't load using the vectorized type
-
-            auto dim = input.getSize(1);
-            bool normLoop = dim > maxThreads;
-            auto numThreads = std::min(dim, maxThreads);
-
-            auto grid = dim3(utils::divUp(input.getSize(0), rowTileSize));
-            auto block = dim3(numThreads);
-
-            auto smem = sizeof(float) * rowTileSize *
-                    utils::divUp(numThreads, kWarpSize);
-
-            RUN_L2_ROW_MAJOR(T, T, input);
-        }
-    } else {
-        //
-        // Column-major kernel
-        //
-
-        // Just use a fixed-sized block, since the kernel threads are fully
-        // independent
-        auto block = 128;
-
-        // Cap the grid size at 2^16 since there is a grid-stride loop to handle
-        // processing everything
-        auto grid = (int)std::min(
-                utils::divUp(input.getSize(1), (IndexType)block),
-                (IndexType)65536);
-
-        if (normSquared) {
-            l2NormColMajor<T, IndexType, true>
-                    <<<grid, block, 0, stream>>>(input, output);
-        } else {
-            l2NormColMajor<T, IndexType, false>
-                    <<<grid, block, 0, stream>>>(input, output);
-        }
-    }
-
-#undef RUN_L2
-
-    CUDA_TEST_ERROR();
-}
-
-void runL2Norm(
-        Tensor<float, 2, true>& input,
-        bool inputRowMajor,
-        Tensor<float, 1, true>& output,
-        bool normSquared,
-        cudaStream_t stream) {
-    if (input.canUseIndexType<int>()) {
-        runL2Norm<float, float4, int>(
-                input, inputRowMajor, output, normSquared, stream);
-    } else {
-        auto inputCast = input.castIndexType<long>();
-        auto outputCast = output.castIndexType<long>();
-
-        runL2Norm<float, float4, long>(
-                inputCast, inputRowMajor, outputCast, normSquared, stream);
-    }
-}
-
-void runL2Norm(
-        Tensor<half, 2, true>& input,
-        bool inputRowMajor,
-        Tensor<float, 1, true>& output,
-        bool normSquared,
-        cudaStream_t stream) {
-    if (input.canUseIndexType<int>()) {
-        runL2Norm<half, half2, int>(
-                input, inputRowMajor, output, normSquared, stream);
-    } else {
-        auto inputCast = input.castIndexType<long>();
-        auto outputCast = output.castIndexType<long>();
-
-        runL2Norm<half, half2, long>(
-                inputCast, inputRowMajor, outputCast, normSquared, stream);
-    }
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/L2Norm.cuh b/faiss/gpu_cuda/impl/L2Norm.cuh
deleted file mode 100644
index db4b3dd148336093139c87f313ca6143480b1edc..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/L2Norm.cuh
+++ /dev/null
@@ -1,30 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-void runL2Norm(
-        Tensor<float, 2, true>& input,
-        bool inputRowMajor,
-        Tensor<float, 1, true>& output,
-        bool normSquared,
-        cudaStream_t stream);
-
-void runL2Norm(
-        Tensor<half, 2, true>& input,
-        bool inputRowMajor,
-        Tensor<float, 1, true>& output,
-        bool normSquared,
-        cudaStream_t stream);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/L2Select.cu b/faiss/gpu_cuda/impl/L2Select.cu
deleted file mode 100644
index bb2f8c3fe7e4fd144a28f2cf84f8b356fcae17fa..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/L2Select.cu
+++ /dev/null
@@ -1,263 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/impl/FaissAssert.h>
-#include <faiss/gpu/impl/L2Select.cuh>
-
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/MathOperators.cuh>
-#include <faiss/gpu/utils/Pair.cuh>
-#include <faiss/gpu/utils/Reductions.cuh>
-#include <faiss/gpu/utils/Select.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-// L2 + select kernel for k == 1, implements re-use of ||c||^2
-template <typename T, int kRowsPerBlock, int kBlockSize>
-__global__ void l2SelectMin1(
-        Tensor<T, 2, true> productDistances,
-        Tensor<T, 1, true> centroidDistances,
-        Tensor<T, 2, true> outDistances,
-        Tensor<int, 2, true> outIndices) {
-    // Each block handles kRowsPerBlock rows of the distances (results)
-    Pair<T, int> threadMin[kRowsPerBlock];
-    __shared__ Pair<T, int> blockMin[kRowsPerBlock * (kBlockSize / kWarpSize)];
-
-    T distance[kRowsPerBlock];
-
-#pragma unroll
-    for (int i = 0; i < kRowsPerBlock; ++i) {
-        threadMin[i].k = Limits<T>::getMax();
-        threadMin[i].v = -1;
-    }
-
-    // blockIdx.x: which chunk of rows we are responsible for updating
-    int rowStart = blockIdx.x * kRowsPerBlock;
-
-    // FIXME: if we have exact multiples, don't need this
-    bool endRow = (blockIdx.x == gridDim.x - 1);
-
-    if (endRow) {
-        if (productDistances.getSize(0) % kRowsPerBlock == 0) {
-            endRow = false;
-        }
-    }
-
-    if (endRow) {
-        for (int row = rowStart; row < productDistances.getSize(0); ++row) {
-            for (int col = threadIdx.x; col < productDistances.getSize(1);
-                 col += blockDim.x) {
-                distance[0] = Math<T>::add(
-                        centroidDistances[col], productDistances[row][col]);
-
-                if (Math<T>::lt(distance[0], threadMin[0].k)) {
-                    threadMin[0].k = distance[0];
-                    threadMin[0].v = col;
-                }
-            }
-
-            // Reduce within the block
-            threadMin[0] = blockReduceAll<
-                    Pair<T, int>,
-                    Min<Pair<T, int>>,
-                    false,
-                    false>(threadMin[0], Min<Pair<T, int>>(), blockMin);
-
-            if (threadIdx.x == 0) {
-                outDistances[row][0] = threadMin[0].k;
-                outIndices[row][0] = threadMin[0].v;
-            }
-
-            // so we can use the shared memory again
-            __syncthreads();
-
-            threadMin[0].k = Limits<T>::getMax();
-            threadMin[0].v = -1;
-        }
-    } else {
-        for (int col = threadIdx.x; col < productDistances.getSize(1);
-             col += blockDim.x) {
-            T centroidDistance = centroidDistances[col];
-
-#pragma unroll
-            for (int row = 0; row < kRowsPerBlock; ++row) {
-                distance[row] = productDistances[rowStart + row][col];
-            }
-
-#pragma unroll
-            for (int row = 0; row < kRowsPerBlock; ++row) {
-                distance[row] = Math<T>::add(distance[row], centroidDistance);
-            }
-
-#pragma unroll
-            for (int row = 0; row < kRowsPerBlock; ++row) {
-                if (Math<T>::lt(distance[row], threadMin[row].k)) {
-                    threadMin[row].k = distance[row];
-                    threadMin[row].v = col;
-                }
-            }
-        }
-
-        // Reduce within the block
-        blockReduceAll<
-                kRowsPerBlock,
-                Pair<T, int>,
-                Min<Pair<T, int>>,
-                false,
-                false>(threadMin, Min<Pair<T, int>>(), blockMin);
-
-        if (threadIdx.x == 0) {
-#pragma unroll
-            for (int row = 0; row < kRowsPerBlock; ++row) {
-                outDistances[rowStart + row][0] = threadMin[row].k;
-                outIndices[rowStart + row][0] = threadMin[row].v;
-            }
-        }
-    }
-}
-
-// L2 + select kernel for k > 1, no re-use of ||c||^2
-template <typename T, int NumWarpQ, int NumThreadQ, int ThreadsPerBlock>
-__global__ void l2SelectMinK(
-        Tensor<T, 2, true> productDistances,
-        Tensor<T, 1, true> centroidDistances,
-        Tensor<T, 2, true> outDistances,
-        Tensor<int, 2, true> outIndices,
-        int k,
-        T initK) {
-    // Each block handles a single row of the distances (results)
-    constexpr int kNumWarps = ThreadsPerBlock / kWarpSize;
-
-    __shared__ T smemK[kNumWarps * NumWarpQ];
-    __shared__ int smemV[kNumWarps * NumWarpQ];
-
-    BlockSelect<
-            T,
-            int,
-            false,
-            Comparator<T>,
-            NumWarpQ,
-            NumThreadQ,
-            ThreadsPerBlock>
-            heap(initK, -1, smemK, smemV, k);
-
-    int row = blockIdx.x;
-
-    // Whole warps must participate in the selection
-    int limit = utils::roundDown(productDistances.getSize(1), kWarpSize);
-    int i = threadIdx.x;
-
-    for (; i < limit; i += blockDim.x) {
-        T v = Math<T>::add(centroidDistances[i], productDistances[row][i]);
-        heap.add(v, i);
-    }
-
-    if (i < productDistances.getSize(1)) {
-        T v = Math<T>::add(centroidDistances[i], productDistances[row][i]);
-        heap.addThreadQ(v, i);
-    }
-
-    heap.reduce();
-    for (int i = threadIdx.x; i < k; i += blockDim.x) {
-        outDistances[row][i] = smemK[i];
-        outIndices[row][i] = smemV[i];
-    }
-}
-
-template <typename T>
-void runL2SelectMin(
-        Tensor<T, 2, true>& productDistances,
-        Tensor<T, 1, true>& centroidDistances,
-        Tensor<T, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices,
-        int k,
-        cudaStream_t stream) {
-    FAISS_ASSERT(productDistances.getSize(0) == outDistances.getSize(0));
-    FAISS_ASSERT(productDistances.getSize(0) == outIndices.getSize(0));
-    FAISS_ASSERT(centroidDistances.getSize(0) == productDistances.getSize(1));
-    FAISS_ASSERT(outDistances.getSize(1) == k);
-    FAISS_ASSERT(outIndices.getSize(1) == k);
-    FAISS_ASSERT(k <= GPU_MAX_SELECTION_K);
-
-    if (k == 1) {
-        constexpr int kThreadsPerBlock = 256;
-        constexpr int kRowsPerBlock = 8;
-
-        auto block = dim3(kThreadsPerBlock);
-        auto grid = dim3(utils::divUp(outDistances.getSize(0), kRowsPerBlock));
-
-        l2SelectMin1<T, kRowsPerBlock, kThreadsPerBlock>
-                <<<grid, block, 0, stream>>>(
-                        productDistances,
-                        centroidDistances,
-                        outDistances,
-                        outIndices);
-    } else {
-        auto grid = dim3(outDistances.getSize(0));
-
-#define RUN_L2_SELECT(BLOCK, NUM_WARP_Q, NUM_THREAD_Q)   \
-    do {                                                 \
-        l2SelectMinK<T, NUM_WARP_Q, NUM_THREAD_Q, BLOCK> \
-                <<<grid, BLOCK, 0, stream>>>(            \
-                        productDistances,                \
-                        centroidDistances,               \
-                        outDistances,                    \
-                        outIndices,                      \
-                        k,                               \
-                        Limits<T>::getMax());            \
-    } while (0)
-
-        // block size 128 for everything <= 1024
-        if (k <= 32) {
-            RUN_L2_SELECT(128, 32, 2);
-        } else if (k <= 64) {
-            RUN_L2_SELECT(128, 64, 3);
-        } else if (k <= 128) {
-            RUN_L2_SELECT(128, 128, 3);
-        } else if (k <= 256) {
-            RUN_L2_SELECT(128, 256, 4);
-        } else if (k <= 512) {
-            RUN_L2_SELECT(128, 512, 8);
-        } else if (k <= 1024) {
-            RUN_L2_SELECT(128, 1024, 8);
-
-#if GPU_MAX_SELECTION_K >= 2048
-        } else if (k <= 2048) {
-            // smaller block for less shared memory
-            RUN_L2_SELECT(64, 2048, 8);
-#endif
-
-        } else {
-            FAISS_ASSERT(false);
-        }
-    }
-
-    CUDA_TEST_ERROR();
-}
-
-void runL2SelectMin(
-        Tensor<float, 2, true>& productDistances,
-        Tensor<float, 1, true>& centroidDistances,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices,
-        int k,
-        cudaStream_t stream) {
-    runL2SelectMin<float>(
-            productDistances,
-            centroidDistances,
-            outDistances,
-            outIndices,
-            k,
-            stream);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/L2Select.cuh b/faiss/gpu_cuda/impl/L2Select.cuh
deleted file mode 100644
index 4c029307e55d6e9b7104ee2d50876bc22e0b7818..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/L2Select.cuh
+++ /dev/null
@@ -1,24 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-void runL2SelectMin(
-        Tensor<float, 2, true>& productDistances,
-        Tensor<float, 1, true>& centroidDistances,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<int, 2, true>& outIndices,
-        int k,
-        cudaStream_t stream);
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/PQCodeDistances-inl.cuh b/faiss/gpu_cuda/impl/PQCodeDistances-inl.cuh
deleted file mode 100644
index 63919e84d8154e712a67731a3f6421ba609466e4..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/PQCodeDistances-inl.cuh
+++ /dev/null
@@ -1,731 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/gpu/impl/BroadcastSum.cuh>
-#include <faiss/gpu/impl/Distance.cuh>
-#include <faiss/gpu/impl/L2Norm.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-#include <faiss/gpu/utils/MatrixMult.cuh>
-#include <faiss/gpu/utils/PtxUtils.cuh>
-#include <faiss/gpu/utils/Transpose.cuh>
-
-namespace faiss {
-namespace gpu {
-
-// Kernel responsible for calculating distance from residual vector to
-// each product quantizer code centroid
-template <
-        typename OutCodeT,
-        typename CentroidT,
-        int DimsPerSubQuantizer,
-        bool L2Distance>
-__global__ void __launch_bounds__(288, 3) pqCodeDistances(
-        Tensor<float, 2, true> queries,
-        int queriesPerBlock,
-        Tensor<CentroidT, 2, true> coarseCentroids,
-        Tensor<float, 3, true> pqCentroids,
-        Tensor<int, 2, true> coarseIndices,
-        // (query id)(coarse)(subquantizer)(code) -> dist
-        Tensor<OutCodeT, 4, true> outCodeDistances) {
-    const auto numSubQuantizers = pqCentroids.getSize(0);
-    const auto dimsPerSubQuantizer = pqCentroids.getSize(1);
-    assert(DimsPerSubQuantizer == dimsPerSubQuantizer);
-    const auto codesPerSubQuantizer = pqCentroids.getSize(2);
-
-    bool isLoadingThread = threadIdx.x >= codesPerSubQuantizer;
-    int loadingThreadId = threadIdx.x - codesPerSubQuantizer;
-
-    extern __shared__ float smem[];
-
-    // Each thread calculates a single code
-    float subQuantizerData[DimsPerSubQuantizer];
-
-    auto code = threadIdx.x;
-    auto subQuantizer = blockIdx.y;
-
-    // Each thread will load the pq centroid data for the code that it
-    // is processing
-    // The loading threads are out of bounds for the number of codes available
-    if (!isLoadingThread) {
-#pragma unroll
-        for (int i = 0; i < DimsPerSubQuantizer; ++i) {
-            subQuantizerData[i] = pqCentroids[subQuantizer][i][code].ldg();
-        }
-    }
-
-    // Where we store our query vector
-    float* smemQuery = smem;
-
-    // Where we store our residual vector; this is double buffered so we
-    // can be loading the next one while processing the current one
-    float* smemResidual1 = &smemQuery[DimsPerSubQuantizer];
-    float* smemResidual2 = &smemResidual1[DimsPerSubQuantizer];
-
-    // Where we pre-load the coarse centroid IDs
-    int* coarseIds = (int*)&smemResidual2[DimsPerSubQuantizer];
-
-    // Each thread is calculating the distance for a single code,
-    // performing the reductions locally
-
-    // Handle multiple queries per block
-    auto startQueryId = blockIdx.x * queriesPerBlock;
-    auto numQueries = queries.getSize(0) - startQueryId;
-    if (numQueries > queriesPerBlock) {
-        numQueries = queriesPerBlock;
-    }
-
-    for (int query = 0; query < numQueries; ++query) {
-        auto queryId = startQueryId + query;
-
-        auto querySubQuantizer =
-                queries[queryId][subQuantizer * DimsPerSubQuantizer].data();
-
-        // Load current query vector
-        for (int i = threadIdx.x; i < DimsPerSubQuantizer; i += blockDim.x) {
-            smemQuery[i] = querySubQuantizer[i];
-        }
-
-        // Load list of coarse centroids found
-        for (int i = threadIdx.x; i < coarseIndices.getSize(1);
-             i += blockDim.x) {
-            coarseIds[i] = coarseIndices[queryId][i];
-        }
-
-        // We need coarseIds below
-        // FIXME: investigate loading separately, so we don't need this
-        __syncthreads();
-
-        // Preload first buffer of residual data
-        if (isLoadingThread) {
-            for (int i = loadingThreadId; i < DimsPerSubQuantizer;
-                 i += blockDim.x - codesPerSubQuantizer) {
-                auto coarseId = coarseIds[0];
-                // In case NaNs were in the original query data
-                coarseId = coarseId == -1 ? 0 : coarseId;
-                auto coarseCentroidSubQuantizer =
-                        coarseCentroids[coarseId]
-                                       [subQuantizer * dimsPerSubQuantizer]
-                                               .data();
-
-                if (L2Distance) {
-                    smemResidual1[i] = smemQuery[i] -
-                            ConvertTo<float>::to(coarseCentroidSubQuantizer[i]);
-                } else {
-                    smemResidual1[i] =
-                            ConvertTo<float>::to(coarseCentroidSubQuantizer[i]);
-                }
-            }
-        }
-
-        // The block walks the list for a single query
-        for (int coarse = 0; coarse < coarseIndices.getSize(1); ++coarse) {
-            // Wait for smemResidual1 to be loaded
-            __syncthreads();
-
-            if (isLoadingThread) {
-                // Preload second buffer of residual data
-                for (int i = loadingThreadId; i < DimsPerSubQuantizer;
-                     i += blockDim.x - codesPerSubQuantizer) {
-                    // FIXME: try always making this centroid id 0 so we can
-                    // terminate
-                    if (coarse != (coarseIndices.getSize(1) - 1)) {
-                        auto coarseId = coarseIds[coarse + 1];
-                        // In case NaNs were in the original query data
-                        coarseId = coarseId == -1 ? 0 : coarseId;
-
-                        auto coarseCentroidSubQuantizer =
-                                coarseCentroids[coarseId]
-                                               [subQuantizer *
-                                                dimsPerSubQuantizer]
-                                                       .data();
-
-                        if (L2Distance) {
-                            smemResidual2[i] =
-                                    smemQuery[i] -
-                                    ConvertTo<float>::to(
-                                            coarseCentroidSubQuantizer[i]);
-                        } else {
-                            smemResidual2[i] = ConvertTo<float>::to(
-                                    coarseCentroidSubQuantizer[i]);
-                        }
-                    }
-                }
-            } else {
-                // These are the processing threads
-                float dist = 0.0f;
-
-                constexpr int kUnroll = 4;
-                constexpr int kRemainder = DimsPerSubQuantizer % kUnroll;
-                constexpr int kRemainderBase = DimsPerSubQuantizer - kRemainder;
-                float vals[kUnroll];
-
-                // Calculate residual - pqCentroid for each dim that we're
-                // processing
-
-                // Unrolled loop
-                if (L2Distance) {
-#pragma unroll
-                    for (int i = 0; i < DimsPerSubQuantizer / kUnroll; ++i) {
-#pragma unroll
-                        for (int j = 0; j < kUnroll; ++j) {
-                            vals[j] = smemResidual1[i * kUnroll + j];
-                        }
-
-#pragma unroll
-                        for (int j = 0; j < kUnroll; ++j) {
-                            vals[j] -= subQuantizerData[i * kUnroll + j];
-                        }
-
-#pragma unroll
-                        for (int j = 0; j < kUnroll; ++j) {
-                            vals[j] *= vals[j];
-                        }
-
-#pragma unroll
-                        for (int j = 0; j < kUnroll; ++j) {
-                            dist += vals[j];
-                        }
-                    }
-                } else {
-                    // Inner product: query slice against the reconstructed
-                    // sub-quantizer for this coarse cell (query o (centroid +
-                    // subQCentroid))
-#pragma unroll
-                    for (int i = 0; i < DimsPerSubQuantizer / kUnroll; ++i) {
-#pragma unroll
-                        for (int j = 0; j < kUnroll; ++j) {
-                            vals[j] = smemResidual1[i * kUnroll + j];
-                        }
-
-#pragma unroll
-                        for (int j = 0; j < kUnroll; ++j) {
-                            vals[j] += subQuantizerData[i * kUnroll + j];
-                        }
-
-#pragma unroll
-                        for (int j = 0; j < kUnroll; ++j) {
-                            vals[j] *= smemQuery[i * kUnroll + j];
-                        }
-
-#pragma unroll
-                        for (int j = 0; j < kUnroll; ++j) {
-                            dist += vals[j];
-                        }
-                    }
-                }
-
-                // Remainder loop
-                if (L2Distance) {
-#pragma unroll
-                    for (int j = 0; j < kRemainder; ++j) {
-                        vals[j] = smemResidual1[kRemainderBase + j];
-                    }
-
-#pragma unroll
-                    for (int j = 0; j < kRemainder; ++j) {
-                        vals[j] -= subQuantizerData[kRemainderBase + j];
-                    }
-
-#pragma unroll
-                    for (int j = 0; j < kRemainder; ++j) {
-                        vals[j] *= vals[j];
-                    }
-                } else {
-                    // Inner product
-                    // Inner product: query slice against the reconstructed
-                    // sub-quantizer for this coarse cell (query o (centroid +
-                    // subQCentroid))
-#pragma unroll
-                    for (int j = 0; j < kRemainder; ++j) {
-                        vals[j] = smemResidual1[kRemainderBase + j];
-                    }
-
-#pragma unroll
-                    for (int j = 0; j < kRemainder; ++j) {
-                        vals[j] += subQuantizerData[kRemainderBase + j];
-                    }
-
-#pragma unroll
-                    for (int j = 0; j < kRemainder; ++j) {
-                        vals[j] *= smemQuery[kRemainderBase + j];
-                    }
-                }
-
-#pragma unroll
-                for (int j = 0; j < kRemainder; ++j) {
-                    dist += vals[j];
-                }
-
-                // We have the distance for our code; write it out
-                outCodeDistances[queryId][coarse][subQuantizer][code] =
-                        ConvertTo<OutCodeT>::to(dist);
-            } // !isLoadingThread
-
-            // Swap residual buffers
-            float* tmp = smemResidual1;
-            smemResidual1 = smemResidual2;
-            smemResidual2 = tmp;
-        }
-    }
-}
-
-template <typename CentroidT, bool L2Residual>
-__global__ void pqResidualVector(
-        Tensor<float, 2, true> queries,
-        Tensor<CentroidT, 2, true> coarseCentroids,
-        Tensor<int, 2, true> coarseIndices,
-        int numSubDim,
-        // output is transposed:
-        // (sub q)(query id)(centroid id)(sub dim)
-        Tensor<float, 4, true> residual) {
-    auto queryId = blockIdx.x;
-    auto centroidId = blockIdx.y;
-
-    int realCentroidId = coarseIndices[queryId][centroidId];
-
-    for (int dim = threadIdx.x; dim < queries.getSize(1); dim += blockDim.x) {
-        float q = queries[queryId][dim];
-        float c = ConvertTo<float>::to(coarseCentroids[realCentroidId][dim]);
-
-        float r;
-
-        if (L2Residual) {
-            r = q - c;
-        } else {
-            // IP does not use a residual. Instead, the estimated distance is
-            // (query . (centroid + sub quantizer centroid).
-            //
-            // This kernel is used to calculate (query . sub quantizer
-            // centroid), providing the query value replicated across all of the
-            // sub quantizers. The batch matrix multiplication in
-            // runPQCodeDistancesMM will perform this inner product. The
-            // adjustment (query . centroid) is added later.
-            r = q;
-        }
-
-        residual[dim / numSubDim][queryId][centroidId][dim % numSubDim] = r;
-    }
-}
-
-template <typename CentroidT>
-void runPQResidualVector(
-        Tensor<float, 3, true>& pqCentroids,
-        Tensor<float, 2, true>& queries,
-        Tensor<CentroidT, 2, true>& coarseCentroids,
-        Tensor<int, 2, true>& coarseIndices,
-        Tensor<float, 4, true>& residual,
-        bool l2Residual,
-        cudaStream_t stream) {
-    auto grid = dim3(coarseIndices.getSize(0), coarseIndices.getSize(1));
-    auto block =
-            dim3(std::min(queries.getSize(1), getMaxThreadsCurrentDevice()));
-
-    if (l2Residual) {
-        pqResidualVector<CentroidT, true><<<grid, block, 0, stream>>>(
-                queries,
-                coarseCentroids,
-                coarseIndices,
-                pqCentroids.getSize(1),
-                residual);
-    } else {
-        pqResidualVector<CentroidT, false><<<grid, block, 0, stream>>>(
-                queries,
-                coarseCentroids,
-                coarseIndices,
-                pqCentroids.getSize(1),
-                residual);
-    }
-
-    CUDA_TEST_ERROR();
-}
-
-template <typename T>
-__global__ void pqDistanceIPCorrection(
-        Tensor<T, 3, true> codeDistances,
-        Tensor<T, 2, true> coarseDistances,
-        int numSubQ) {
-    int centroid = blockIdx.x;
-    int query = blockIdx.y;
-
-    // We need to add the (query . centroid) correction factor (coarseDistances)
-    // to all output code distances (q)(c)(sub q)(code).
-    // However, there are numSubQ code distance sums per each approximated
-    // distance, so we need to divide this correction by numSubQ since we will
-    // be adding it numSubQ times.
-    auto d = coarseDistances[query][centroid] / (float)numSubQ;
-
-    auto base = codeDistances[query][centroid].data();
-
-    for (int i = threadIdx.x; i < codeDistances.getSize(2); i += blockDim.x) {
-        base[i] += d;
-    }
-}
-
-// We have previously calculated (query . sub quantizer centroid), but we
-// need to calculate (query . (centroid + sub quantizer centroid). This will add
-// in the correction factor to each calculated code distance.
-template <typename T>
-void runPQDistanceIPCorrection(
-        Tensor<T, 4, true>& codeDistances,
-        Tensor<T, 2, true>& coarseDistances,
-        cudaStream_t stream) {
-    auto grid = dim3(coarseDistances.getSize(1), coarseDistances.getSize(0));
-    auto block = 512;
-
-    auto codeView = codeDistances.template downcastInner<3>();
-
-    pqDistanceIPCorrection<<<grid, block, 0, stream>>>(
-            codeView, coarseDistances, codeDistances.getSize(2));
-}
-
-// This is a general purpose implementation that leverages GEMM to calculate
-// code distances for PQ codes for any number of dimensions per sub-quantizer /
-// number of sub-quantizers
-template <typename CentroidT>
-void runPQCodeDistancesMM(
-        GpuResources* res,
-        Tensor<float, 3, true>& pqCentroids,
-        Tensor<float, 2, true>& queries,
-        Tensor<CentroidT, 2, true>& coarseCentroids,
-        Tensor<float, 2, true>& coarseDistances,
-        Tensor<int, 2, true>& coarseIndices,
-        // Output is (query)(centroid)(sub q)(code)
-        NoTypeTensor<4, true>& outCodeDistances,
-        bool l2Distance,
-        bool useFloat16Lookup,
-        cudaStream_t stream) {
-    // We construct our float32 output in outCodeDistancesF
-    Tensor<float, 4, true> outCodeDistancesF;
-    DeviceTensor<float, 4, true> outCodeDistancesFloatMem;
-
-    if (useFloat16Lookup) {
-        // outCodeDistances has half memory, we need to allocate a buffer for
-        // float
-        outCodeDistancesFloatMem = DeviceTensor<float, 4, true>(
-                res,
-                makeTempAlloc(AllocType::Other, stream),
-                {outCodeDistances.getSize(0),
-                 outCodeDistances.getSize(1),
-                 outCodeDistances.getSize(2),
-                 outCodeDistances.getSize(3)});
-
-        outCodeDistancesF = outCodeDistancesFloatMem;
-    } else {
-        // We can use the memory that we were given
-        outCodeDistancesF = outCodeDistances.toTensor<float>();
-    }
-
-    // Calculate (q - c) residual vector if L2. Otherwise, for IP, this kernel
-    // will just replicate q
-    //
-    // (sub q)(query id)(centroid id)(sub dim)
-    DeviceTensor<float, 4, true> residual(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {pqCentroids.getSize(0),
-             coarseIndices.getSize(0),
-             coarseIndices.getSize(1),
-             pqCentroids.getSize(1)});
-
-    runPQResidualVector(
-            pqCentroids,
-            queries,
-            coarseCentroids,
-            coarseIndices,
-            residual,
-            l2Distance,
-            stream);
-
-    // Perform a batch MM:
-    // (sub q) x {(q * c)(sub dim) x (sub dim)(code)} =>
-    // (sub q) x {(q * c)(code)}
-    auto residualView3 = residual.view<3>(
-            {pqCentroids.getSize(0),
-             coarseIndices.getSize(0) * coarseIndices.getSize(1),
-             pqCentroids.getSize(1)});
-
-    DeviceTensor<float, 3, true> residualDistance(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {pqCentroids.getSize(0),
-             coarseIndices.getSize(0) * coarseIndices.getSize(1),
-             pqCentroids.getSize(2)});
-
-    runBatchMatrixMult(
-            residualDistance,
-            false,
-            residualView3,
-            false,
-            pqCentroids,
-            false,
-            l2Distance ? -2.0f : 1.0f,
-            0.0f,
-            res->getBlasHandleCurrentDevice(),
-            stream);
-
-    if (l2Distance) {
-        // Calculate ||q - c||^2
-        DeviceTensor<float, 1, true> residualNorms(
-                res,
-                makeTempAlloc(AllocType::Other, stream),
-                {pqCentroids.getSize(0) * coarseIndices.getSize(0) *
-                 coarseIndices.getSize(1)});
-
-        auto residualView2 = residual.view<2>(
-                {pqCentroids.getSize(0) * coarseIndices.getSize(0) *
-                         coarseIndices.getSize(1),
-                 pqCentroids.getSize(1)});
-
-        runL2Norm(residualView2, true, residualNorms, true, stream);
-
-        // Sum ||q - c||^2 along rows
-        auto residualDistanceView2 = residualDistance.view<2>(
-                {pqCentroids.getSize(0) * coarseIndices.getSize(0) *
-                         coarseIndices.getSize(1),
-                 pqCentroids.getSize(2)});
-
-        runSumAlongRows(residualNorms, residualDistanceView2, false, stream);
-    }
-
-    // Transpose (sub q)(q * c)(code) to (q * c)(sub q)(code) (which
-    // is where we build our output distances). L2 version of this has an added
-    // -2 multiplicative factor
-    auto outCodeDistancesView = outCodeDistancesF.view<3>(
-            {coarseIndices.getSize(0) * coarseIndices.getSize(1),
-             outCodeDistances.getSize(2),
-             outCodeDistances.getSize(3)});
-
-    runTransposeAny(residualDistance, 0, 1, outCodeDistancesView, stream);
-
-    if (l2Distance) {
-        // Calculate code norms per each sub-dim
-        // (sub q)(sub dim)(code) is pqCentroids
-        // transpose to (sub q)(code)(sub dim)
-        DeviceTensor<float, 3, true> pqCentroidsTranspose(
-                res,
-                makeTempAlloc(AllocType::Other, stream),
-                {pqCentroids.getSize(0),
-                 pqCentroids.getSize(2),
-                 pqCentroids.getSize(1)});
-
-        runTransposeAny(pqCentroids, 1, 2, pqCentroidsTranspose, stream);
-
-        auto pqCentroidsTransposeView = pqCentroidsTranspose.view<2>(
-                {pqCentroids.getSize(0) * pqCentroids.getSize(2),
-                 pqCentroids.getSize(1)});
-
-        // The norm of each (sub q)(code)
-        DeviceTensor<float, 1, true> pqCentroidsNorm(
-                res,
-                makeTempAlloc(AllocType::Other, stream),
-                {pqCentroids.getSize(0) * pqCentroids.getSize(2)});
-
-        runL2Norm(
-                pqCentroidsTransposeView, true, pqCentroidsNorm, true, stream);
-
-        // View output as (q * c)(sub q * code), and add centroid norm to
-        // each row
-        auto outDistancesCodeViewCols = outCodeDistancesView.view<2>(
-                {coarseIndices.getSize(0) * coarseIndices.getSize(1),
-                 outCodeDistances.getSize(2) * outCodeDistances.getSize(3)});
-
-        runSumAlongColumns(pqCentroidsNorm, outDistancesCodeViewCols, stream);
-    } else {
-        // We have previously calculated (query . sub quantizer centroid), but
-        // we need to calculate (query . (centroid + sub quantizer centroid).
-        //
-        // We need to add the (query . centroid) correction factor
-        // (coarseDistances) to all output code distances (q)(c)(sub q)(code).
-        runPQDistanceIPCorrection(outCodeDistancesF, coarseDistances, stream);
-    }
-
-    HostTensor<float, 4, true> debugT(outCodeDistancesF, stream);
-
-    if (useFloat16Lookup) {
-        // Need to convert back to half in the output memory
-        auto outCodeDistancesH = outCodeDistances.toTensor<half>();
-        convertTensor<float, half, 4>(
-                stream, outCodeDistancesF, outCodeDistancesH);
-    }
-}
-
-// Must be kept in sync with runPQDistances
-inline bool isSpecializedPQCodeDistanceDims(int dims) {
-    switch (dims) {
-        case 1:
-        case 2:
-        case 3:
-        case 4:
-        case 5:
-        case 6:
-        case 8:
-        case 10:
-        case 12:
-        case 16:
-        case 20:
-        case 24:
-        case 28:
-        case 32:
-            return true;
-        default:
-            return false;
-    }
-}
-
-template <typename CentroidT>
-void runPQCodeDistances(
-        GpuResources* res,
-        Tensor<float, 3, true>& pqCentroids,
-        Tensor<float, 2, true>& queries,
-        Tensor<CentroidT, 2, true>& coarseCentroids,
-        Tensor<float, 2, true>& coarseDistances,
-        Tensor<int, 2, true>& coarseIndices,
-        NoTypeTensor<4, true>& outCodeDistances,
-        bool useMMImplementation,
-        bool l2Distance,
-        bool useFloat16Lookup,
-        cudaStream_t stream) {
-    const auto numSubQuantizers = pqCentroids.getSize(0);
-    const auto dimsPerSubQuantizer = pqCentroids.getSize(1);
-    const auto codesPerSubQuantizer = pqCentroids.getSize(2);
-
-    // Only a certain number of dimensions per sub quantizer are supported by
-    // the specialized implementation. Every other value falls back to the
-    // generalized MM implementation.
-    if (!isSpecializedPQCodeDistanceDims(dimsPerSubQuantizer) ||
-        useMMImplementation) {
-        // Use the general purpose matrix multiplication implementation which
-        // handles any number of sub-quantizers and dimensions per sub-quantizer
-        runPQCodeDistancesMM<CentroidT>(
-                res,
-                pqCentroids,
-                queries,
-                coarseCentroids,
-                coarseDistances,
-                coarseIndices,
-                outCodeDistances,
-                l2Distance,
-                useFloat16Lookup,
-                stream);
-        return;
-    }
-
-    // FIXME: tune
-    // Reuse of pq centroid data is based on both # of queries * nprobe,
-    // and we should really be tiling in both dimensions
-    constexpr int kQueriesPerBlock = 8;
-
-    auto grid =
-            dim3(utils::divUp(queries.getSize(0), kQueriesPerBlock),
-                 numSubQuantizers);
-
-    // Reserve one block of threads for double buffering
-    // FIXME: probably impractical for large # of dims?
-    auto loadingThreads = utils::roundUp(dimsPerSubQuantizer, kWarpSize);
-    auto block = dim3(codesPerSubQuantizer + loadingThreads);
-
-    auto smem = (3 * dimsPerSubQuantizer) * sizeof(float) +
-            coarseIndices.getSize(1) * sizeof(int);
-
-#define RUN_CODE(DIMS, L2)                                               \
-    do {                                                                 \
-        if (useFloat16Lookup) {                                          \
-            auto outCodeDistancesT = outCodeDistances.toTensor<half>();  \
-                                                                         \
-            pqCodeDistances<half, CentroidT, DIMS, L2>                   \
-                    <<<grid, block, smem, stream>>>(                     \
-                            queries,                                     \
-                            kQueriesPerBlock,                            \
-                            coarseCentroids,                             \
-                            pqCentroids,                                 \
-                            coarseIndices,                               \
-                            outCodeDistancesT);                          \
-        } else {                                                         \
-            auto outCodeDistancesT = outCodeDistances.toTensor<float>(); \
-                                                                         \
-            pqCodeDistances<float, CentroidT, DIMS, L2>                  \
-                    <<<grid, block, smem, stream>>>(                     \
-                            queries,                                     \
-                            kQueriesPerBlock,                            \
-                            coarseCentroids,                             \
-                            pqCentroids,                                 \
-                            coarseIndices,                               \
-                            outCodeDistancesT);                          \
-        }                                                                \
-    } while (0)
-
-#define CODE_L2(DIMS)              \
-    do {                           \
-        if (l2Distance) {          \
-            RUN_CODE(DIMS, true);  \
-        } else {                   \
-            RUN_CODE(DIMS, false); \
-        }                          \
-    } while (0)
-
-    switch (dimsPerSubQuantizer) {
-        case 1:
-            CODE_L2(1);
-            break;
-        case 2:
-            CODE_L2(2);
-            break;
-        case 3:
-            CODE_L2(3);
-            break;
-        case 4:
-            CODE_L2(4);
-            break;
-        case 5:
-            CODE_L2(5);
-            break;
-        case 6:
-            CODE_L2(6);
-            break;
-        case 8:
-            CODE_L2(8);
-            break;
-        case 10:
-            CODE_L2(10);
-            break;
-        case 12:
-            CODE_L2(12);
-            break;
-        case 16:
-            CODE_L2(16);
-            break;
-        case 20:
-            CODE_L2(20);
-            break;
-        case 24:
-            CODE_L2(24);
-            break;
-        case 28:
-            CODE_L2(28);
-            break;
-        case 32:
-            CODE_L2(32);
-            break;
-        default:
-            // This should not be reached, we should fall back to the MM
-            // implementation
-            FAISS_ASSERT(false);
-            break;
-    }
-
-#undef RUN_CODE
-#undef CODE_L2
-
-    CUDA_TEST_ERROR();
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/PQCodeDistances.cuh b/faiss/gpu_cuda/impl/PQCodeDistances.cuh
deleted file mode 100644
index 2edfe463be9fccff5ccd99021e18ff3bd66f11be..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/PQCodeDistances.cuh
+++ /dev/null
@@ -1,39 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cublas_v2.h>
-#include <faiss/gpu/utils/NoTypeTensor.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-class DeviceMemory;
-
-/// pqCentroids is of the form (sub q)(sub dim)(code id)
-/// Calculates the distance from the (query - centroid) residual to
-/// each sub-code vector, for the given list of query results in
-/// coarseIndices
-template <typename CentroidT>
-void runPQCodeDistances(
-        GpuResources* res,
-        Tensor<float, 3, true>& pqCentroids,
-        Tensor<float, 2, true>& queries,
-        Tensor<CentroidT, 2, true>& coarseCentroids,
-        Tensor<float, 2, true>& coarseDistances,
-        Tensor<int, 2, true>& coarseIndices,
-        NoTypeTensor<4, true>& outCodeDistances,
-        bool useMMImplementation,
-        bool l2Distance,
-        bool useFloat16Lookup);
-
-} // namespace gpu
-} // namespace faiss
-
-#include <faiss/gpu/impl/PQCodeDistances-inl.cuh>
diff --git a/faiss/gpu_cuda/impl/PQCodeLoad.cuh b/faiss/gpu_cuda/impl/PQCodeLoad.cuh
deleted file mode 100644
index e9b8fc9c92dab936c973cddf1be9be199d6e31cc..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/PQCodeLoad.cuh
+++ /dev/null
@@ -1,382 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/PtxUtils.cuh>
-
-namespace faiss {
-namespace gpu {
-
-#if __CUDA_ARCH__ >= 350
-// Use the CC 3.5+ read-only texture cache (nc)
-#define LD_NC_V1 "ld.global.cs.nc.u32"
-#define LD_NC_V2 "ld.global.cs.nc.v2.u32"
-#define LD_NC_V4 "ld.global.cs.nc.v4.u32"
-#else
-// Read normally
-#define LD_NC_V1 "ld.global.cs.u32"
-#define LD_NC_V2 "ld.global.cs.v2.u32"
-#define LD_NC_V4 "ld.global.cs.v4.u32"
-#endif // __CUDA_ARCH__
-
-///
-/// This file contains loader functions for PQ codes of various byte
-/// length.
-///
-
-// Type-specific wrappers around the PTX bfe.* instruction, for
-// quantization code extraction
-inline __device__ unsigned int getByte(unsigned char v, int pos, int width) {
-    return v;
-}
-
-inline __device__ unsigned int getByte(unsigned short v, int pos, int width) {
-    return getBitfield((unsigned int)v, pos, width);
-}
-
-inline __device__ unsigned int getByte(unsigned int v, int pos, int width) {
-    return getBitfield(v, pos, width);
-}
-
-inline __device__ unsigned int getByte(uint64_t v, int pos, int width) {
-    return getBitfield(v, pos, width);
-}
-
-template <int NumSubQuantizers>
-struct LoadCode32 {};
-
-template <>
-struct LoadCode32<1> {
-    static inline __device__ void load(
-            unsigned int code32[1],
-            uint8_t* p,
-            int offset) {
-        p += offset * 1;
-        asm("ld.global.cs.u8 {%0}, [%1];" : "=r"(code32[0]) : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<2> {
-    static inline __device__ void load(
-            unsigned int code32[1],
-            uint8_t* p,
-            int offset) {
-        p += offset * 2;
-        asm("ld.global.cs.u16 {%0}, [%1];" : "=r"(code32[0]) : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<3> {
-    static inline __device__ void load(
-            unsigned int code32[1],
-            uint8_t* p,
-            int offset) {
-        p += offset * 3;
-        unsigned int a;
-        unsigned int b;
-        unsigned int c;
-
-        // FIXME: this is a non-coalesced, unaligned, non-vectorized load
-        // unfortunately need to reorganize memory layout by warp
-        asm("ld.global.cs.u8 {%0}, [%1 + 0];" : "=r"(a) : "l"(p));
-        asm("ld.global.cs.u8 {%0}, [%1 + 1];" : "=r"(b) : "l"(p));
-        asm("ld.global.cs.u8 {%0}, [%1 + 2];" : "=r"(c) : "l"(p));
-
-        // FIXME: this is also slow, since we have to recover the
-        // individual bytes loaded
-        code32[0] = (c << 16) | (b << 8) | a;
-    }
-};
-
-template <>
-struct LoadCode32<4> {
-    static inline __device__ void load(
-            unsigned int code32[1],
-            uint8_t* p,
-            int offset) {
-        p += offset * 4;
-        asm("ld.global.cs.u32 {%0}, [%1];" : "=r"(code32[0]) : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<8> {
-    static inline __device__ void load(
-            unsigned int code32[2],
-            uint8_t* p,
-            int offset) {
-        p += offset * 8;
-        asm("ld.global.cs.v2.u32 {%0, %1}, [%2];"
-            : "=r"(code32[0]), "=r"(code32[1])
-            : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<12> {
-    static inline __device__ void load(
-            unsigned int code32[3],
-            uint8_t* p,
-            int offset) {
-        p += offset * 12;
-        // FIXME: this is a non-coalesced, unaligned, non-vectorized load
-        // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V1 " {%0}, [%1 + 0];" : "=r"(code32[0]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 4];" : "=r"(code32[1]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 8];" : "=r"(code32[2]) : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<16> {
-    static inline __device__ void load(
-            unsigned int code32[4],
-            uint8_t* p,
-            int offset) {
-        p += offset * 16;
-        asm("ld.global.cs.v4.u32 {%0, %1, %2, %3}, [%4];"
-            : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<20> {
-    static inline __device__ void load(
-            unsigned int code32[5],
-            uint8_t* p,
-            int offset) {
-        p += offset * 20;
-        // FIXME: this is a non-coalesced, unaligned, non-vectorized load
-        // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V1 " {%0}, [%1 + 0];" : "=r"(code32[0]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 4];" : "=r"(code32[1]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 8];" : "=r"(code32[2]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 12];" : "=r"(code32[3]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 16];" : "=r"(code32[4]) : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<24> {
-    static inline __device__ void load(
-            unsigned int code32[6],
-            uint8_t* p,
-            int offset) {
-        p += offset * 24;
-        // FIXME: this is a non-coalesced, unaligned, 2-vectorized load
-        // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 0];"
-            : "=r"(code32[0]), "=r"(code32[1])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 8];"
-            : "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5])
-            : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<28> {
-    static inline __device__ void load(
-            unsigned int code32[7],
-            uint8_t* p,
-            int offset) {
-        p += offset * 28;
-        // FIXME: this is a non-coalesced, unaligned, non-vectorized load
-        // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V1 " {%0}, [%1 + 0];" : "=r"(code32[0]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 4];" : "=r"(code32[1]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 8];" : "=r"(code32[2]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 12];" : "=r"(code32[3]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 16];" : "=r"(code32[4]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 20];" : "=r"(code32[5]) : "l"(p));
-        asm(LD_NC_V1 " {%0}, [%1 + 24];" : "=r"(code32[6]) : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<32> {
-    static inline __device__ void load(
-            unsigned int code32[8],
-            uint8_t* p,
-            int offset) {
-        p += offset * 32;
-        // FIXME: this is a non-coalesced load
-        // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4];"
-            : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5]), "=r"(code32[6]), "=r"(code32[7])
-            : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<40> {
-    static inline __device__ void load(
-            unsigned int code32[10],
-            uint8_t* p,
-            int offset) {
-        p += offset * 40;
-        // FIXME: this is a non-coalesced, unaligned, 2-vectorized load
-        // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 0];"
-            : "=r"(code32[0]), "=r"(code32[1])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 8];"
-            : "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 24];"
-            : "=r"(code32[6]), "=r"(code32[7])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 32];"
-            : "=r"(code32[8]), "=r"(code32[9])
-            : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<48> {
-    static inline __device__ void load(
-            unsigned int code32[12],
-            uint8_t* p,
-            int offset) {
-        p += offset * 48;
-        // FIXME: this is a non-coalesced load
-        // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4];"
-            : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5]), "=r"(code32[6]), "=r"(code32[7])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 32];"
-            : "=r"(code32[8]),
-              "=r"(code32[9]),
-              "=r"(code32[10]),
-              "=r"(code32[11])
-            : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<56> {
-    static inline __device__ void load(
-            unsigned int code32[14],
-            uint8_t* p,
-            int offset) {
-        p += offset * 56;
-        // FIXME: this is a non-coalesced, unaligned, 2-vectorized load
-        // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 0];"
-            : "=r"(code32[0]), "=r"(code32[1])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 8];"
-            : "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 24];"
-            : "=r"(code32[6]), "=r"(code32[7])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 32];"
-            : "=r"(code32[8]), "=r"(code32[9])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 40];"
-            : "=r"(code32[10]), "=r"(code32[11])
-            : "l"(p));
-        asm(LD_NC_V2 " {%0, %1}, [%2 + 48];"
-            : "=r"(code32[12]), "=r"(code32[13])
-            : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<64> {
-    static inline __device__ void load(
-            unsigned int code32[16],
-            uint8_t* p,
-            int offset) {
-        p += offset * 64;
-        // FIXME: this is a non-coalesced load
-        // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4];"
-            : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5]), "=r"(code32[6]), "=r"(code32[7])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 32];"
-            : "=r"(code32[8]),
-              "=r"(code32[9]),
-              "=r"(code32[10]),
-              "=r"(code32[11])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 48];"
-            : "=r"(code32[12]),
-              "=r"(code32[13]),
-              "=r"(code32[14]),
-              "=r"(code32[15])
-            : "l"(p));
-    }
-};
-
-template <>
-struct LoadCode32<96> {
-    static inline __device__ void load(
-            unsigned int code32[24],
-            uint8_t* p,
-            int offset) {
-        p += offset * 96;
-        // FIXME: this is a non-coalesced load
-        // unfortunately need to reorganize memory layout by warp
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4];"
-            : "=r"(code32[0]), "=r"(code32[1]), "=r"(code32[2]), "=r"(code32[3])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 16];"
-            : "=r"(code32[4]), "=r"(code32[5]), "=r"(code32[6]), "=r"(code32[7])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 32];"
-            : "=r"(code32[8]),
-              "=r"(code32[9]),
-              "=r"(code32[10]),
-              "=r"(code32[11])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 48];"
-            : "=r"(code32[12]),
-              "=r"(code32[13]),
-              "=r"(code32[14]),
-              "=r"(code32[15])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 64];"
-            : "=r"(code32[16]),
-              "=r"(code32[17]),
-              "=r"(code32[18]),
-              "=r"(code32[19])
-            : "l"(p));
-        asm(LD_NC_V4 " {%0, %1, %2, %3}, [%4 + 80];"
-            : "=r"(code32[20]),
-              "=r"(code32[21]),
-              "=r"(code32[22]),
-              "=r"(code32[23])
-            : "l"(p));
-    }
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/PQScanMultiPassNoPrecomputed-inl.cuh b/faiss/gpu_cuda/impl/PQScanMultiPassNoPrecomputed-inl.cuh
deleted file mode 100644
index c1bc2f590fb621a70c9c9c600b4c32fb595a3b42..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/PQScanMultiPassNoPrecomputed-inl.cuh
+++ /dev/null
@@ -1,749 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/gpu/impl/IVFUtils.cuh>
-#include <faiss/gpu/impl/PQCodeDistances.cuh>
-#include <faiss/gpu/impl/PQCodeLoad.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-#include <faiss/gpu/utils/LoadStoreOperators.cuh>
-#include <faiss/gpu/utils/NoTypeTensor.cuh>
-#include <faiss/gpu/utils/WarpPackedBits.cuh>
-
-namespace faiss {
-namespace gpu {
-
-// A basic implementation that works for the interleaved by vector layout for
-// any number of sub-quantizers
-template <typename EncodeT, int EncodeBits, typename CodeDistanceT>
-__global__ void pqScanInterleaved(
-        Tensor<float, 2, true> queries,
-        Tensor<float, 3, true> pqCentroids,
-        Tensor<int, 2, true> topQueryToCentroid,
-        Tensor<CodeDistanceT, 4, true> codeDistances,
-        void** listCodes,
-        int* listLengths,
-        Tensor<int, 2, true> prefixSumOffsets,
-        Tensor<float, 1, true> distance) {
-    // Each block handles a single query
-    auto queryId = blockIdx.y;
-    auto probeId = blockIdx.x;
-
-    auto listId = topQueryToCentroid[queryId][probeId];
-    // Safety guard in case NaNs in input cause no list ID to be generated
-    if (listId == -1) {
-        return;
-    }
-
-    int numWarps = blockDim.x / kWarpSize;
-    // FIXME: some issue with getLaneId() and CUDA 10.1 and P4 GPUs?
-    int laneId = threadIdx.x % kWarpSize;
-    int warpId = threadIdx.x / kWarpSize;
-
-    int numSubQuantizers = codeDistances.getSize(2);
-
-    // This is where we start writing out data
-    // We ensure that before the array (at offset -1), there is a 0 value
-    int outBase = *(prefixSumOffsets[queryId][probeId].data() - 1);
-    float* distanceOut = distance[outBase].data();
-    auto localCodeDistances = codeDistances[queryId][probeId];
-
-    // This is where the codes for our list start
-    auto vecsBase = (EncodeT*)listCodes[listId];
-    int numVecs = listLengths[listId];
-
-    // How many vector blocks of 32 are in this list?
-    int numBlocks = utils::divUp(numVecs, 32);
-
-    // Number of EncodeT words per each dimension of block of 32 vecs
-    constexpr int bytesPerVectorBlockDim = EncodeBits * 32 / 8;
-    constexpr int wordsPerVectorBlockDim =
-            bytesPerVectorBlockDim / sizeof(EncodeT);
-    int wordsPerVectorBlock = wordsPerVectorBlockDim * numSubQuantizers;
-
-    for (int block = warpId; block < numBlocks; block += numWarps) {
-        float dist = 0;
-
-        // This is the vector a given lane/thread handles
-        int vec = block * kWarpSize + laneId;
-        bool valid = vec < numVecs;
-
-        EncodeT* data = vecsBase + block * wordsPerVectorBlock;
-
-        for (int sq = 0; sq < numSubQuantizers; ++sq) {
-            EncodeT enc =
-                    WarpPackedBits<EncodeT, EncodeBits>::read(laneId, data);
-            EncodeT code =
-                    WarpPackedBits<EncodeT, EncodeBits>::postRead(laneId, enc);
-
-            dist += valid ? ConvertTo<float>::to(localCodeDistances[sq][code])
-                          : 0;
-            data += wordsPerVectorBlockDim;
-        }
-
-        if (valid) {
-            distanceOut[vec] = dist;
-        }
-    }
-}
-
-template <typename LookupT, typename LookupVecT>
-struct LoadCodeDistances {
-    static inline __device__ void load(
-            LookupT* smem,
-            LookupT* codes,
-            int numCodes) {
-        constexpr int kWordSize = sizeof(LookupVecT) / sizeof(LookupT);
-
-        // We can only use the vector type if the data is guaranteed to be
-        // aligned. The codes are innermost, so if it is evenly divisible,
-        // then any slice will be aligned.
-        if (numCodes % kWordSize == 0) {
-            // Load the data by float4 for efficiency, and then handle any
-            // remainder limitVec is the number of whole vec words we can load,
-            // in terms of whole blocks performing the load
-            constexpr int kUnroll = 2;
-            int limitVec = numCodes / (kUnroll * kWordSize * blockDim.x);
-            limitVec *= kUnroll * blockDim.x;
-
-            LookupVecT* smemV = (LookupVecT*)smem;
-            LookupVecT* codesV = (LookupVecT*)codes;
-
-            for (int i = threadIdx.x; i < limitVec; i += kUnroll * blockDim.x) {
-                LookupVecT vals[kUnroll];
-
-#pragma unroll
-                for (int j = 0; j < kUnroll; ++j) {
-                    vals[j] = LoadStore<LookupVecT>::load(
-                            &codesV[i + j * blockDim.x]);
-                }
-
-#pragma unroll
-                for (int j = 0; j < kUnroll; ++j) {
-                    LoadStore<LookupVecT>::store(
-                            &smemV[i + j * blockDim.x], vals[j]);
-                }
-            }
-
-            // This is where we start loading the remainder that does not evenly
-            // fit into kUnroll x blockDim.x
-            int remainder = limitVec * kWordSize;
-
-            for (int i = remainder + threadIdx.x; i < numCodes;
-                 i += blockDim.x) {
-                smem[i] = codes[i];
-            }
-        } else {
-            // Potential unaligned load
-            constexpr int kUnroll = 4;
-
-            int limit = utils::roundDown(numCodes, kUnroll * blockDim.x);
-
-            int i = threadIdx.x;
-            for (; i < limit; i += kUnroll * blockDim.x) {
-                LookupT vals[kUnroll];
-
-#pragma unroll
-                for (int j = 0; j < kUnroll; ++j) {
-                    vals[j] = codes[i + j * blockDim.x];
-                }
-
-#pragma unroll
-                for (int j = 0; j < kUnroll; ++j) {
-                    smem[i + j * blockDim.x] = vals[j];
-                }
-            }
-
-            for (; i < numCodes; i += blockDim.x) {
-                smem[i] = codes[i];
-            }
-        }
-    }
-};
-
-template <int NumSubQuantizers, typename LookupT, typename LookupVecT>
-__global__ void pqScanNoPrecomputedMultiPass(
-        Tensor<float, 2, true> queries,
-        Tensor<float, 3, true> pqCentroids,
-        Tensor<int, 2, true> topQueryToCentroid,
-        Tensor<LookupT, 4, true> codeDistances,
-        void** listCodes,
-        int* listLengths,
-        Tensor<int, 2, true> prefixSumOffsets,
-        Tensor<float, 1, true> distance) {
-    const auto codesPerSubQuantizer = pqCentroids.getSize(2);
-
-    // Where the pq code -> residual distance is stored
-    extern __shared__ char smemCodeDistances[];
-    LookupT* codeDist = (LookupT*)smemCodeDistances;
-
-    // Each block handles a single query
-    auto queryId = blockIdx.y;
-    auto probeId = blockIdx.x;
-
-    // This is where we start writing out data
-    // We ensure that before the array (at offset -1), there is a 0 value
-    int outBase = *(prefixSumOffsets[queryId][probeId].data() - 1);
-    float* distanceOut = distance[outBase].data();
-
-    auto listId = topQueryToCentroid[queryId][probeId];
-    // Safety guard in case NaNs in input cause no list ID to be generated
-    if (listId == -1) {
-        return;
-    }
-
-    uint8_t* codeList = (uint8_t*)listCodes[listId];
-    int limit = listLengths[listId];
-
-    constexpr int kNumCode32 =
-            NumSubQuantizers <= 4 ? 1 : (NumSubQuantizers / 4);
-    unsigned int code32[kNumCode32];
-    unsigned int nextCode32[kNumCode32];
-
-    // We double-buffer the code loading, which improves memory utilization
-    if (threadIdx.x < limit) {
-        LoadCode32<NumSubQuantizers>::load(code32, codeList, threadIdx.x);
-    }
-
-    LoadCodeDistances<LookupT, LookupVecT>::load(
-            codeDist,
-            codeDistances[queryId][probeId].data(),
-            codeDistances.getSize(2) * codeDistances.getSize(3));
-
-    // Prevent WAR dependencies
-    __syncthreads();
-
-    // Each thread handles one code element in the list, with a
-    // block-wide stride
-    for (int codeIndex = threadIdx.x; codeIndex < limit;
-         codeIndex += blockDim.x) {
-        // Prefetch next codes
-        if (codeIndex + blockDim.x < limit) {
-            LoadCode32<NumSubQuantizers>::load(
-                    nextCode32, codeList, codeIndex + blockDim.x);
-        }
-
-        float dist = 0.0f;
-
-#pragma unroll
-        for (int word = 0; word < kNumCode32; ++word) {
-            constexpr int kBytesPerCode32 =
-                    NumSubQuantizers < 4 ? NumSubQuantizers : 4;
-
-            if (kBytesPerCode32 == 1) {
-                auto code = code32[0];
-                dist = ConvertTo<float>::to(codeDist[code]);
-
-            } else {
-#pragma unroll
-                for (int byte = 0; byte < kBytesPerCode32; ++byte) {
-                    auto code = getByte(code32[word], byte * 8, 8);
-
-                    auto offset = codesPerSubQuantizer *
-                            (word * kBytesPerCode32 + byte);
-
-                    dist += ConvertTo<float>::to(codeDist[offset + code]);
-                }
-            }
-        }
-
-        // Write out intermediate distance result
-        // We do not maintain indices here, in order to reduce global
-        // memory traffic. Those are recovered in the final selection step.
-        distanceOut[codeIndex] = dist;
-
-        // Rotate buffers
-#pragma unroll
-        for (int word = 0; word < kNumCode32; ++word) {
-            code32[word] = nextCode32[word];
-        }
-    }
-}
-
-template <typename CentroidT>
-void runMultiPassTile(
-        GpuResources* res,
-        Tensor<float, 2, true>& queries,
-        Tensor<CentroidT, 2, true>& centroids,
-        Tensor<float, 3, true>& pqCentroidsInnermostCode,
-        NoTypeTensor<4, true>& codeDistances,
-        Tensor<float, 2, true>& coarseDistances,
-        Tensor<int, 2, true>& coarseIndices,
-        bool useFloat16Lookup,
-        bool useMMCodeDistance,
-        bool interleavedCodeLayout,
-        int bitsPerSubQuantizer,
-        int numSubQuantizers,
-        int numSubQuantizerCodes,
-        thrust::device_vector<void*>& listCodes,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        thrust::device_vector<int>& listLengths,
-        Tensor<char, 1, true>& thrustMem,
-        Tensor<int, 2, true>& prefixSumOffsets,
-        Tensor<float, 1, true>& allDistances,
-        Tensor<float, 3, true>& heapDistances,
-        Tensor<int, 3, true>& heapIndices,
-        int k,
-        faiss::MetricType metric,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<Index::idx_t, 2, true>& outIndices,
-        cudaStream_t stream) {
-    // We only support two metrics at the moment
-    FAISS_ASSERT(
-            metric == MetricType::METRIC_INNER_PRODUCT ||
-            metric == MetricType::METRIC_L2);
-
-    bool l2Distance = metric == MetricType::METRIC_L2;
-
-    // Calculate offset lengths, so we know where to write out
-    // intermediate results
-    runCalcListOffsets(
-            res,
-            coarseIndices,
-            listLengths,
-            prefixSumOffsets,
-            thrustMem,
-            stream);
-
-    // Calculate residual code distances, since this is without
-    // precomputed codes
-    runPQCodeDistances(
-            res,
-            pqCentroidsInnermostCode,
-            queries,
-            centroids,
-            coarseDistances,
-            coarseIndices,
-            codeDistances,
-            useMMCodeDistance,
-            l2Distance,
-            useFloat16Lookup,
-            stream);
-
-    if (interleavedCodeLayout) {
-        // The vector interleaved layout implementation
-        auto kThreadsPerBlock = 256;
-
-        auto grid = dim3(coarseIndices.getSize(1), coarseIndices.getSize(0));
-        auto block = dim3(kThreadsPerBlock);
-
-#define RUN_INTERLEAVED(BITS_PER_CODE, CODE_DIST_T)            \
-    do {                                                       \
-        pqScanInterleaved<uint8_t, BITS_PER_CODE, CODE_DIST_T> \
-                <<<grid, block, 0, stream>>>(                  \
-                        queries,                               \
-                        pqCentroidsInnermostCode,              \
-                        coarseIndices,                         \
-                        codeDistancesT,                        \
-                        listCodes.data().get(),                \
-                        listLengths.data().get(),              \
-                        prefixSumOffsets,                      \
-                        allDistances);                         \
-    } while (0)
-
-        if (useFloat16Lookup) {
-            auto codeDistancesT = codeDistances.toTensor<half>();
-
-            switch (bitsPerSubQuantizer) {
-                case 4: {
-                    RUN_INTERLEAVED(4, half);
-                } break;
-                case 5: {
-                    RUN_INTERLEAVED(5, half);
-                } break;
-                case 6: {
-                    RUN_INTERLEAVED(6, half);
-                } break;
-                case 8: {
-                    RUN_INTERLEAVED(8, half);
-                } break;
-                default:
-                    FAISS_ASSERT(false);
-                    break;
-            }
-        } else {
-            auto codeDistancesT = codeDistances.toTensor<float>();
-
-            switch (bitsPerSubQuantizer) {
-                case 4: {
-                    RUN_INTERLEAVED(4, float);
-                } break;
-                case 5: {
-                    RUN_INTERLEAVED(5, float);
-                } break;
-                case 6: {
-                    RUN_INTERLEAVED(6, float);
-                } break;
-                case 8: {
-                    RUN_INTERLEAVED(8, float);
-                } break;
-                default:
-                    FAISS_ASSERT(false);
-                    break;
-            }
-        }
-    } else {
-        // Convert all codes to a distance, and write out (distance,
-        // index) values for all intermediate results
-        auto kThreadsPerBlock = 256;
-
-        auto grid = dim3(coarseIndices.getSize(1), coarseIndices.getSize(0));
-        auto block = dim3(kThreadsPerBlock);
-
-        // pq centroid distances
-        auto smem = useFloat16Lookup ? sizeof(half) : sizeof(float);
-
-        smem *= numSubQuantizers * numSubQuantizerCodes;
-        FAISS_ASSERT(smem <= getMaxSharedMemPerBlockCurrentDevice());
-
-#define RUN_PQ_OPT(NUM_SUB_Q, LOOKUP_T, LOOKUP_VEC_T)                   \
-    do {                                                                \
-        auto codeDistancesT = codeDistances.toTensor<LOOKUP_T>();       \
-                                                                        \
-        pqScanNoPrecomputedMultiPass<NUM_SUB_Q, LOOKUP_T, LOOKUP_VEC_T> \
-                <<<grid, block, smem, stream>>>(                        \
-                        queries,                                        \
-                        pqCentroidsInnermostCode,                       \
-                        coarseIndices,                                  \
-                        codeDistancesT,                                 \
-                        listCodes.data().get(),                         \
-                        listLengths.data().get(),                       \
-                        prefixSumOffsets,                               \
-                        allDistances);                                  \
-    } while (0)
-
-#define RUN_PQ(NUM_SUB_Q)                         \
-    do {                                          \
-        if (useFloat16Lookup) {                   \
-            RUN_PQ_OPT(NUM_SUB_Q, half, Half8);   \
-        } else {                                  \
-            RUN_PQ_OPT(NUM_SUB_Q, float, float4); \
-        }                                         \
-    } while (0)
-
-        switch (numSubQuantizers) {
-            case 1:
-                RUN_PQ(1);
-                break;
-            case 2:
-                RUN_PQ(2);
-                break;
-            case 3:
-                RUN_PQ(3);
-                break;
-            case 4:
-                RUN_PQ(4);
-                break;
-            case 8:
-                RUN_PQ(8);
-                break;
-            case 12:
-                RUN_PQ(12);
-                break;
-            case 16:
-                RUN_PQ(16);
-                break;
-            case 20:
-                RUN_PQ(20);
-                break;
-            case 24:
-                RUN_PQ(24);
-                break;
-            case 28:
-                RUN_PQ(28);
-                break;
-            case 32:
-                RUN_PQ(32);
-                break;
-            case 40:
-                RUN_PQ(40);
-                break;
-            case 48:
-                RUN_PQ(48);
-                break;
-            case 56:
-                RUN_PQ(56);
-                break;
-            case 64:
-                RUN_PQ(64);
-                break;
-            case 96:
-                RUN_PQ(96);
-                break;
-            default:
-                FAISS_ASSERT(false);
-                break;
-        }
-
-#undef RUN_PQ
-#undef RUN_PQ_OPT
-    }
-
-    CUDA_TEST_ERROR();
-
-    // k-select the output in chunks, to increase parallelism
-    runPass1SelectLists(
-            prefixSumOffsets,
-            allDistances,
-            coarseIndices.getSize(1),
-            k,
-            !l2Distance, // L2 distance chooses smallest
-            heapDistances,
-            heapIndices,
-            stream);
-
-    // k-select final output
-    auto flatHeapDistances = heapDistances.downcastInner<2>();
-    auto flatHeapIndices = heapIndices.downcastInner<2>();
-
-    runPass2SelectLists(
-            flatHeapDistances,
-            flatHeapIndices,
-            listIndices,
-            indicesOptions,
-            prefixSumOffsets,
-            coarseIndices,
-            k,
-            !l2Distance, // L2 distance chooses smallest
-            outDistances,
-            outIndices,
-            stream);
-}
-
-template <typename CentroidT>
-void runPQScanMultiPassNoPrecomputed(
-        Tensor<float, 2, true>& queries,
-        Tensor<CentroidT, 2, true>& centroids,
-        Tensor<float, 3, true>& pqCentroidsInnermostCode,
-        Tensor<float, 2, true>& coarseDistances,
-        Tensor<int, 2, true>& coarseIndices,
-        bool useFloat16Lookup,
-        bool useMMCodeDistance,
-        bool interleavedCodeLayout,
-        int bitsPerSubQuantizer,
-        int numSubQuantizers,
-        int numSubQuantizerCodes,
-        thrust::device_vector<void*>& listCodes,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        thrust::device_vector<int>& listLengths,
-        int maxListLength,
-        int k,
-        faiss::MetricType metric,
-        // output
-        Tensor<float, 2, true>& outDistances,
-        // output
-        Tensor<Index::idx_t, 2, true>& outIndices,
-        GpuResources* res) {
-    constexpr int kMinQueryTileSize = 8;
-    constexpr int kMaxQueryTileSize = 128;
-    constexpr int kThrustMemSize = 16384;
-
-    int nprobe = coarseIndices.getSize(1);
-
-    auto stream = res->getDefaultStreamCurrentDevice();
-
-    // Make a reservation for Thrust to do its dirty work (global memory
-    // cross-block reduction space); hopefully this is large enough.
-    DeviceTensor<char, 1, true> thrustMem1(
-            res, makeTempAlloc(AllocType::Other, stream), {kThrustMemSize});
-    DeviceTensor<char, 1, true> thrustMem2(
-            res, makeTempAlloc(AllocType::Other, stream), {kThrustMemSize});
-    DeviceTensor<char, 1, true>* thrustMem[2] = {&thrustMem1, &thrustMem2};
-
-    // How much temporary storage is available?
-    // If possible, we'd like to fit within the space available.
-    size_t sizeAvailable = res->getTempMemoryAvailableCurrentDevice();
-
-    // We run two passes of heap selection
-    // This is the size of the first-level heap passes
-    constexpr int kNProbeSplit = 8;
-    int pass2Chunks = std::min(nprobe, kNProbeSplit);
-
-    size_t sizeForFirstSelectPass =
-            pass2Chunks * k * (sizeof(float) + sizeof(int));
-
-    // How much temporary storage we need per each query
-    size_t sizePerQuery = 2 *                         // streams
-            ((nprobe * sizeof(int) + sizeof(int)) +   // prefixSumOffsets
-             nprobe * maxListLength * sizeof(float) + // allDistances
-             // residual distances
-             nprobe * numSubQuantizers * numSubQuantizerCodes * sizeof(float) +
-             sizeForFirstSelectPass);
-
-    int queryTileSize = (int)(sizeAvailable / sizePerQuery);
-
-    if (queryTileSize < kMinQueryTileSize) {
-        queryTileSize = kMinQueryTileSize;
-    } else if (queryTileSize > kMaxQueryTileSize) {
-        queryTileSize = kMaxQueryTileSize;
-    }
-
-    // FIXME: we should adjust queryTileSize to deal with this, since
-    // indexing is in int32
-    FAISS_ASSERT(
-            queryTileSize * nprobe * maxListLength <
-            std::numeric_limits<int>::max());
-
-    // Temporary memory buffers
-    // Make sure there is space prior to the start which will be 0, and
-    // will handle the boundary condition without branches
-    DeviceTensor<int, 1, true> prefixSumOffsetSpace1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize * nprobe + 1});
-    DeviceTensor<int, 1, true> prefixSumOffsetSpace2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize * nprobe + 1});
-
-    DeviceTensor<int, 2, true> prefixSumOffsets1(
-            prefixSumOffsetSpace1[1].data(), {queryTileSize, nprobe});
-    DeviceTensor<int, 2, true> prefixSumOffsets2(
-            prefixSumOffsetSpace2[1].data(), {queryTileSize, nprobe});
-    DeviceTensor<int, 2, true>* prefixSumOffsets[2] = {
-            &prefixSumOffsets1, &prefixSumOffsets2};
-
-    // Make sure the element before prefixSumOffsets is 0, since we
-    // depend upon simple, boundary-less indexing to get proper results
-    CUDA_VERIFY(cudaMemsetAsync(
-            prefixSumOffsetSpace1.data(), 0, sizeof(int), stream));
-    CUDA_VERIFY(cudaMemsetAsync(
-            prefixSumOffsetSpace2.data(), 0, sizeof(int), stream));
-
-    int codeDistanceTypeSize = useFloat16Lookup ? sizeof(half) : sizeof(float);
-
-    int totalCodeDistancesSize = queryTileSize * nprobe * numSubQuantizers *
-            numSubQuantizerCodes * codeDistanceTypeSize;
-
-    DeviceTensor<char, 1, true> codeDistances1Mem(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {totalCodeDistancesSize});
-    NoTypeTensor<4, true> codeDistances1(
-            codeDistances1Mem.data(),
-            codeDistanceTypeSize,
-            {queryTileSize, nprobe, numSubQuantizers, numSubQuantizerCodes});
-
-    DeviceTensor<char, 1, true> codeDistances2Mem(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {totalCodeDistancesSize});
-    NoTypeTensor<4, true> codeDistances2(
-            codeDistances2Mem.data(),
-            codeDistanceTypeSize,
-            {queryTileSize, nprobe, numSubQuantizers, numSubQuantizerCodes});
-
-    NoTypeTensor<4, true>* codeDistances[2] = {
-            &codeDistances1, &codeDistances2};
-
-    DeviceTensor<float, 1, true> allDistances1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize * nprobe * maxListLength});
-    DeviceTensor<float, 1, true> allDistances2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize * nprobe * maxListLength});
-    DeviceTensor<float, 1, true>* allDistances[2] = {
-            &allDistances1, &allDistances2};
-
-    DeviceTensor<float, 3, true> heapDistances1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize, pass2Chunks, k});
-    DeviceTensor<float, 3, true> heapDistances2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize, pass2Chunks, k});
-    DeviceTensor<float, 3, true>* heapDistances[2] = {
-            &heapDistances1, &heapDistances2};
-
-    DeviceTensor<int, 3, true> heapIndices1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize, pass2Chunks, k});
-    DeviceTensor<int, 3, true> heapIndices2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize, pass2Chunks, k});
-    DeviceTensor<int, 3, true>* heapIndices[2] = {&heapIndices1, &heapIndices2};
-
-    auto streams = res->getAlternateStreamsCurrentDevice();
-    streamWait(streams, {stream});
-
-    int curStream = 0;
-
-    for (int query = 0; query < queries.getSize(0); query += queryTileSize) {
-        int numQueriesInTile =
-                std::min(queryTileSize, queries.getSize(0) - query);
-
-        auto prefixSumOffsetsView =
-                prefixSumOffsets[curStream]->narrowOutermost(
-                        0, numQueriesInTile);
-
-        auto codeDistancesView =
-                codeDistances[curStream]->narrowOutermost(0, numQueriesInTile);
-        auto coarseDistancesView =
-                coarseDistances.narrowOutermost(query, numQueriesInTile);
-        auto coarseIndicesView =
-                coarseIndices.narrowOutermost(query, numQueriesInTile);
-        auto queryView = queries.narrowOutermost(query, numQueriesInTile);
-
-        auto heapDistancesView =
-                heapDistances[curStream]->narrowOutermost(0, numQueriesInTile);
-        auto heapIndicesView =
-                heapIndices[curStream]->narrowOutermost(0, numQueriesInTile);
-
-        auto outDistanceView =
-                outDistances.narrowOutermost(query, numQueriesInTile);
-        auto outIndicesView =
-                outIndices.narrowOutermost(query, numQueriesInTile);
-
-        runMultiPassTile(
-                res,
-                queryView,
-                centroids,
-                pqCentroidsInnermostCode,
-                codeDistancesView,
-                coarseDistancesView,
-                coarseIndicesView,
-                useFloat16Lookup,
-                useMMCodeDistance,
-                interleavedCodeLayout,
-                bitsPerSubQuantizer,
-                numSubQuantizers,
-                numSubQuantizerCodes,
-                listCodes,
-                listIndices,
-                indicesOptions,
-                listLengths,
-                *thrustMem[curStream],
-                prefixSumOffsetsView,
-                *allDistances[curStream],
-                heapDistancesView,
-                heapIndicesView,
-                k,
-                metric,
-                outDistanceView,
-                outIndicesView,
-                streams[curStream]);
-
-        curStream = (curStream + 1) % 2;
-    }
-
-    streamWait({stream}, streams);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/PQScanMultiPassNoPrecomputed.cuh b/faiss/gpu_cuda/impl/PQScanMultiPassNoPrecomputed.cuh
deleted file mode 100644
index 00221cacd8745ba2d347bd87b6d7bfb3702b147d..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/PQScanMultiPassNoPrecomputed.cuh
+++ /dev/null
@@ -1,50 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/Index.h>
-#include <faiss/MetricType.h>
-#include <faiss/gpu/GpuIndicesOptions.h>
-#include <thrust/device_vector.h>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-class GpuResources;
-
-template <typename CentroidT>
-void runPQScanMultiPassNoPrecomputed(
-        Tensor<float, 2, true>& queries,
-        Tensor<CentroidT, 2, true>& centroids,
-        Tensor<float, 3, true>& pqCentroidsInnermostCode,
-        Tensor<float, 2, true>& coarseDistances,
-        Tensor<int, 2, true>& coarseIndices,
-        bool useFloat16Lookup,
-        bool useMMCodeDistance,
-        bool interleavedCodeLayout,
-        int bitsPerSubQuantizer,
-        int numSubQuantizers,
-        int numSubQuantizerCodes,
-        thrust::device_vector<void*>& listCodes,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        thrust::device_vector<int>& listLengths,
-        int maxListLength,
-        int k,
-        faiss::MetricType metric,
-        // output
-        Tensor<float, 2, true>& outDistances,
-        // output
-        Tensor<Index::idx_t, 2, true>& outIndices,
-        GpuResources* res);
-
-} // namespace gpu
-} // namespace faiss
-
-#include <faiss/gpu/impl/PQScanMultiPassNoPrecomputed-inl.cuh>
diff --git a/faiss/gpu_cuda/impl/PQScanMultiPassPrecomputed.cu b/faiss/gpu_cuda/impl/PQScanMultiPassPrecomputed.cu
deleted file mode 100644
index a2376df270447f92390682aeb28c3dfad7f57c8b..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/PQScanMultiPassPrecomputed.cu
+++ /dev/null
@@ -1,735 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/gpu/impl/IVFUtils.cuh>
-#include <faiss/gpu/impl/PQCodeLoad.cuh>
-#include <faiss/gpu/impl/PQScanMultiPassPrecomputed.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-#include <faiss/gpu/utils/LoadStoreOperators.cuh>
-#include <faiss/gpu/utils/MathOperators.cuh>
-#include <faiss/gpu/utils/WarpPackedBits.cuh>
-
-#include <algorithm>
-#include <limits>
-
-namespace faiss {
-namespace gpu {
-
-// A basic implementation that works for the interleaved by vector layout for
-// any number of sub-quantizers
-template <typename EncodeT, int EncodeBits, typename CodeDistanceT>
-__global__ void pqScanPrecomputedInterleaved(
-        Tensor<float, 2, true> queries,
-        // (query id)(probe id)
-        Tensor<float, 2, true> precompTerm1,
-        // (centroid id)(sub q)(code id)
-        Tensor<CodeDistanceT, 3, true> precompTerm2,
-        // (query id)(sub q)(code id)
-        Tensor<CodeDistanceT, 3, true> precompTerm3,
-        Tensor<int, 2, true> topQueryToCentroid,
-        void** listCodes,
-        int* listLengths,
-        Tensor<int, 2, true> prefixSumOffsets,
-        Tensor<float, 1, true> distance) {
-    // Each block handles a single query versus single list
-    auto queryId = blockIdx.y;
-    auto probeId = blockIdx.x;
-
-    auto listId = topQueryToCentroid[queryId][probeId];
-    // Safety guard in case NaNs in input cause no list ID to be generated
-    if (listId == -1) {
-        return;
-    }
-
-    int numWarps = blockDim.x / kWarpSize;
-    // FIXME: some issue with getLaneId() and CUDA 10.1 and P4 GPUs?
-    int laneId = threadIdx.x % kWarpSize;
-    int warpId = threadIdx.x / kWarpSize;
-
-    auto numSubQuantizers = precompTerm2.getSize(1);
-    auto codesPerSubQuantizer = precompTerm2.getSize(2);
-
-    // This is where we start writing out data
-    // We ensure that before the array (at offset -1), there is a 0 value
-    int outBase = *(prefixSumOffsets[queryId][probeId].data() - 1);
-    float* distanceOut = distance[outBase].data();
-
-    auto vecsBase = (EncodeT*)listCodes[listId];
-    int numVecs = listLengths[listId];
-
-    // How many vector blocks of 32 are in this list?
-    int numBlocks = utils::divUp(numVecs, 32);
-
-    // Number of EncodeT words per each dimension of block of 32 vecs
-    constexpr int bytesPerVectorBlockDim = EncodeBits * 32 / 8;
-    constexpr int wordsPerVectorBlockDim =
-            bytesPerVectorBlockDim / sizeof(EncodeT);
-    int wordsPerVectorBlock = wordsPerVectorBlockDim * numSubQuantizers;
-
-    // This is constant for the (query, probe)
-    float term1 = precompTerm1[queryId][probeId];
-
-    for (int block = warpId; block < numBlocks; block += numWarps) {
-        float dist = term1;
-
-        // This is the vector a given lane/thread handles
-        int vec = block * kWarpSize + laneId;
-        bool valid = vec < numVecs;
-
-        EncodeT* data = vecsBase + block * wordsPerVectorBlock;
-        auto term2Base = precompTerm2[listId].data();
-        auto term3Base = precompTerm3[queryId].data();
-
-        for (int sq = 0; sq < numSubQuantizers; ++sq) {
-            EncodeT enc =
-                    WarpPackedBits<EncodeT, EncodeBits>::read(laneId, data);
-            EncodeT code =
-                    WarpPackedBits<EncodeT, EncodeBits>::postRead(laneId, enc);
-
-            dist += valid ? (ConvertTo<float>::to(term2Base[code]) +
-                             ConvertTo<float>::to(term3Base[code]))
-                          : 0;
-
-            data += wordsPerVectorBlockDim;
-            term2Base += codesPerSubQuantizer;
-            term3Base += codesPerSubQuantizer;
-        }
-
-        if (valid) {
-            distanceOut[vec] = dist;
-        }
-    }
-}
-
-// For precomputed codes, this calculates and loads code distances
-// into smem
-template <typename LookupT, typename LookupVecT>
-inline __device__ void loadPrecomputedTerm(
-        LookupT* smem,
-        LookupT* term2Start,
-        LookupT* term3Start,
-        int numCodes) {
-    constexpr int kWordSize = sizeof(LookupVecT) / sizeof(LookupT);
-
-    // We can only use vector loads if the data is guaranteed to be
-    // aligned. The codes are innermost, so if it is evenly divisible,
-    // then any slice will be aligned.
-    if (numCodes % kWordSize == 0) {
-        constexpr int kUnroll = 2;
-
-        // Load the data by float4 for efficiency, and then handle any remainder
-        // limitVec is the number of whole vec words we can load, in terms
-        // of whole blocks performing the load
-        int limitVec = numCodes / (kUnroll * kWordSize * blockDim.x);
-        limitVec *= kUnroll * blockDim.x;
-
-        LookupVecT* smemV = (LookupVecT*)smem;
-        LookupVecT* term2StartV = (LookupVecT*)term2Start;
-        LookupVecT* term3StartV = (LookupVecT*)term3Start;
-
-        for (int i = threadIdx.x; i < limitVec; i += kUnroll * blockDim.x) {
-            LookupVecT vals[kUnroll];
-
-#pragma unroll
-            for (int j = 0; j < kUnroll; ++j) {
-                vals[j] = LoadStore<LookupVecT>::load(
-                        &term2StartV[i + j * blockDim.x]);
-            }
-
-#pragma unroll
-            for (int j = 0; j < kUnroll; ++j) {
-                LookupVecT q = LoadStore<LookupVecT>::load(
-                        &term3StartV[i + j * blockDim.x]);
-
-                vals[j] = Math<LookupVecT>::add(vals[j], q);
-            }
-
-#pragma unroll
-            for (int j = 0; j < kUnroll; ++j) {
-                LoadStore<LookupVecT>::store(
-                        &smemV[i + j * blockDim.x], vals[j]);
-            }
-        }
-
-        // This is where we start loading the remainder that does not evenly
-        // fit into kUnroll x blockDim.x
-        int remainder = limitVec * kWordSize;
-
-        for (int i = remainder + threadIdx.x; i < numCodes; i += blockDim.x) {
-            smem[i] = Math<LookupT>::add(term2Start[i], term3Start[i]);
-        }
-    } else {
-        // Potential unaligned load
-        constexpr int kUnroll = 4;
-
-        int limit = utils::roundDown(numCodes, kUnroll * blockDim.x);
-
-        int i = threadIdx.x;
-        for (; i < limit; i += kUnroll * blockDim.x) {
-            LookupT vals[kUnroll];
-
-#pragma unroll
-            for (int j = 0; j < kUnroll; ++j) {
-                vals[j] = term2Start[i + j * blockDim.x];
-            }
-
-#pragma unroll
-            for (int j = 0; j < kUnroll; ++j) {
-                vals[j] = Math<LookupT>::add(
-                        vals[j], term3Start[i + j * blockDim.x]);
-            }
-
-#pragma unroll
-            for (int j = 0; j < kUnroll; ++j) {
-                smem[i + j * blockDim.x] = vals[j];
-            }
-        }
-
-        for (; i < numCodes; i += blockDim.x) {
-            smem[i] = Math<LookupT>::add(term2Start[i], term3Start[i]);
-        }
-    }
-}
-
-template <int NumSubQuantizers, typename LookupT, typename LookupVecT>
-__global__ void pqScanPrecomputedMultiPass(
-        Tensor<float, 2, true> queries,
-        Tensor<float, 2, true> precompTerm1,
-        Tensor<LookupT, 3, true> precompTerm2,
-        Tensor<LookupT, 3, true> precompTerm3,
-        Tensor<int, 2, true> topQueryToCentroid,
-        void** listCodes,
-        int* listLengths,
-        Tensor<int, 2, true> prefixSumOffsets,
-        Tensor<float, 1, true> distance) {
-    // precomputed term 2 + 3 storage
-    // (sub q)(code id)
-    extern __shared__ char smemTerm23[];
-    LookupT* term23 = (LookupT*)smemTerm23;
-
-    // Each block handles a single query
-    auto queryId = blockIdx.y;
-    auto probeId = blockIdx.x;
-    auto codesPerSubQuantizer = precompTerm2.getSize(2);
-    auto precompTermSize = precompTerm2.getSize(1) * codesPerSubQuantizer;
-
-    // This is where we start writing out data
-    // We ensure that before the array (at offset -1), there is a 0 value
-    int outBase = *(prefixSumOffsets[queryId][probeId].data() - 1);
-    float* distanceOut = distance[outBase].data();
-
-    auto listId = topQueryToCentroid[queryId][probeId];
-    // Safety guard in case NaNs in input cause no list ID to be generated
-    if (listId == -1) {
-        return;
-    }
-
-    uint8_t* codeList = (uint8_t*)listCodes[listId];
-    int limit = listLengths[listId];
-
-    constexpr int kNumCode32 =
-            NumSubQuantizers <= 4 ? 1 : (NumSubQuantizers / 4);
-    unsigned int code32[kNumCode32];
-    unsigned int nextCode32[kNumCode32];
-
-    // We double-buffer the code loading, which improves memory utilization
-    if (threadIdx.x < limit) {
-        LoadCode32<NumSubQuantizers>::load(code32, codeList, threadIdx.x);
-    }
-
-    // Load precomputed terms 1, 2, 3
-    float term1 = precompTerm1[queryId][probeId];
-    loadPrecomputedTerm<LookupT, LookupVecT>(
-            term23,
-            precompTerm2[listId].data(),
-            precompTerm3[queryId].data(),
-            precompTermSize);
-
-    // Prevent WAR dependencies
-    __syncthreads();
-
-    // Each thread handles one code element in the list, with a
-    // block-wide stride
-    for (int codeIndex = threadIdx.x; codeIndex < limit;
-         codeIndex += blockDim.x) {
-        // Prefetch next codes
-        if (codeIndex + blockDim.x < limit) {
-            LoadCode32<NumSubQuantizers>::load(
-                    nextCode32, codeList, codeIndex + blockDim.x);
-        }
-
-        float dist = term1;
-
-#pragma unroll
-        for (int word = 0; word < kNumCode32; ++word) {
-            constexpr int kBytesPerCode32 =
-                    NumSubQuantizers < 4 ? NumSubQuantizers : 4;
-
-            if (kBytesPerCode32 == 1) {
-                auto code = code32[0];
-                dist = ConvertTo<float>::to(term23[code]);
-
-            } else {
-#pragma unroll
-                for (int byte = 0; byte < kBytesPerCode32; ++byte) {
-                    auto code = getByte(code32[word], byte * 8, 8);
-
-                    auto offset = codesPerSubQuantizer *
-                            (word * kBytesPerCode32 + byte);
-
-                    dist += ConvertTo<float>::to(term23[offset + code]);
-                }
-            }
-        }
-
-        // Write out intermediate distance result
-        // We do not maintain indices here, in order to reduce global
-        // memory traffic. Those are recovered in the final selection step.
-        distanceOut[codeIndex] = dist;
-
-        // Rotate buffers
-#pragma unroll
-        for (int word = 0; word < kNumCode32; ++word) {
-            code32[word] = nextCode32[word];
-        }
-    }
-}
-
-void runMultiPassTile(
-        GpuResources* res,
-        Tensor<float, 2, true>& queries,
-        Tensor<float, 2, true>& precompTerm1,
-        NoTypeTensor<3, true>& precompTerm2,
-        NoTypeTensor<3, true>& precompTerm3,
-        Tensor<int, 2, true>& topQueryToCentroid,
-        bool useFloat16Lookup,
-        bool interleavedCodeLayout,
-        int bitsPerSubQuantizer,
-        int numSubQuantizers,
-        int numSubQuantizerCodes,
-        thrust::device_vector<void*>& listCodes,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        thrust::device_vector<int>& listLengths,
-        Tensor<char, 1, true>& thrustMem,
-        Tensor<int, 2, true>& prefixSumOffsets,
-        Tensor<float, 1, true>& allDistances,
-        Tensor<float, 3, true>& heapDistances,
-        Tensor<int, 3, true>& heapIndices,
-        int k,
-        Tensor<float, 2, true>& outDistances,
-        Tensor<Index::idx_t, 2, true>& outIndices,
-        cudaStream_t stream) {
-    // Calculate offset lengths, so we know where to write out
-    // intermediate results
-    runCalcListOffsets(
-            res,
-            topQueryToCentroid,
-            listLengths,
-            prefixSumOffsets,
-            thrustMem,
-            stream);
-
-    // The vector interleaved layout implementation
-    if (interleavedCodeLayout) {
-        auto kThreadsPerBlock = 256;
-
-        auto grid = dim3(
-                topQueryToCentroid.getSize(1), topQueryToCentroid.getSize(0));
-        auto block = dim3(kThreadsPerBlock);
-
-#define RUN_INTERLEAVED(BITS_PER_CODE, CODE_DIST_T)                       \
-    do {                                                                  \
-        pqScanPrecomputedInterleaved<uint8_t, BITS_PER_CODE, CODE_DIST_T> \
-                <<<grid, block, 0, stream>>>(                             \
-                        queries,                                          \
-                        precompTerm1,                                     \
-                        precompTerm2T,                                    \
-                        precompTerm3T,                                    \
-                        topQueryToCentroid,                               \
-                        listCodes.data().get(),                           \
-                        listLengths.data().get(),                         \
-                        prefixSumOffsets,                                 \
-                        allDistances);                                    \
-    } while (0)
-
-        if (useFloat16Lookup) {
-            auto precompTerm2T = precompTerm2.toTensor<half>();
-            auto precompTerm3T = precompTerm3.toTensor<half>();
-
-            switch (bitsPerSubQuantizer) {
-                case 4: {
-                    RUN_INTERLEAVED(4, half);
-                } break;
-                case 5: {
-                    RUN_INTERLEAVED(5, half);
-                } break;
-                case 6: {
-                    RUN_INTERLEAVED(6, half);
-                } break;
-                case 8: {
-                    RUN_INTERLEAVED(8, half);
-                } break;
-                default:
-                    FAISS_ASSERT(false);
-                    break;
-            }
-        } else {
-            auto precompTerm2T = precompTerm2.toTensor<float>();
-            auto precompTerm3T = precompTerm3.toTensor<float>();
-
-            switch (bitsPerSubQuantizer) {
-                case 4: {
-                    RUN_INTERLEAVED(4, float);
-                } break;
-                case 5: {
-                    RUN_INTERLEAVED(5, float);
-                } break;
-                case 6: {
-                    RUN_INTERLEAVED(6, float);
-                } break;
-                case 8: {
-                    RUN_INTERLEAVED(8, float);
-                } break;
-                default:
-                    FAISS_ASSERT(false);
-                    break;
-            }
-        }
-    } else {
-        // Convert all codes to a distance, and write out (distance,
-        // index) values for all intermediate results
-        auto kThreadsPerBlock = 256;
-
-        auto grid = dim3(
-                topQueryToCentroid.getSize(1), topQueryToCentroid.getSize(0));
-        auto block = dim3(kThreadsPerBlock);
-
-        // pq precomputed terms (2 + 3)
-        auto smem = useFloat16Lookup ? sizeof(half) : sizeof(float);
-
-        smem *= numSubQuantizers * numSubQuantizerCodes;
-        FAISS_ASSERT(smem <= getMaxSharedMemPerBlockCurrentDevice());
-
-#define RUN_PQ_OPT(NUM_SUB_Q, LOOKUP_T, LOOKUP_VEC_T)                 \
-    do {                                                              \
-        auto precompTerm2T = precompTerm2.toTensor<LOOKUP_T>();       \
-        auto precompTerm3T = precompTerm3.toTensor<LOOKUP_T>();       \
-                                                                      \
-        pqScanPrecomputedMultiPass<NUM_SUB_Q, LOOKUP_T, LOOKUP_VEC_T> \
-                <<<grid, block, smem, stream>>>(                      \
-                        queries,                                      \
-                        precompTerm1,                                 \
-                        precompTerm2T,                                \
-                        precompTerm3T,                                \
-                        topQueryToCentroid,                           \
-                        listCodes.data().get(),                       \
-                        listLengths.data().get(),                     \
-                        prefixSumOffsets,                             \
-                        allDistances);                                \
-    } while (0)
-
-#define RUN_PQ(NUM_SUB_Q)                         \
-    do {                                          \
-        if (useFloat16Lookup) {                   \
-            RUN_PQ_OPT(NUM_SUB_Q, half, Half8);   \
-        } else {                                  \
-            RUN_PQ_OPT(NUM_SUB_Q, float, float4); \
-        }                                         \
-    } while (0)
-
-        switch (numSubQuantizers) {
-            case 1:
-                RUN_PQ(1);
-                break;
-            case 2:
-                RUN_PQ(2);
-                break;
-            case 3:
-                RUN_PQ(3);
-                break;
-            case 4:
-                RUN_PQ(4);
-                break;
-            case 8:
-                RUN_PQ(8);
-                break;
-            case 12:
-                RUN_PQ(12);
-                break;
-            case 16:
-                RUN_PQ(16);
-                break;
-            case 20:
-                RUN_PQ(20);
-                break;
-            case 24:
-                RUN_PQ(24);
-                break;
-            case 28:
-                RUN_PQ(28);
-                break;
-            case 32:
-                RUN_PQ(32);
-                break;
-            case 40:
-                RUN_PQ(40);
-                break;
-            case 48:
-                RUN_PQ(48);
-                break;
-            case 56:
-                RUN_PQ(56);
-                break;
-            case 64:
-                RUN_PQ(64);
-                break;
-            case 96:
-                RUN_PQ(96);
-                break;
-            default:
-                FAISS_ASSERT(false);
-                break;
-        }
-
-        CUDA_TEST_ERROR();
-
-#undef RUN_PQ
-#undef RUN_PQ_OPT
-#undef RUN_INTERLEAVED
-    }
-
-    // k-select the output in chunks, to increase parallelism
-    runPass1SelectLists(
-            prefixSumOffsets,
-            allDistances,
-            topQueryToCentroid.getSize(1),
-            k,
-            false, // L2 distance chooses smallest
-            heapDistances,
-            heapIndices,
-            stream);
-
-    // k-select final output
-    auto flatHeapDistances = heapDistances.downcastInner<2>();
-    auto flatHeapIndices = heapIndices.downcastInner<2>();
-
-    runPass2SelectLists(
-            flatHeapDistances,
-            flatHeapIndices,
-            listIndices,
-            indicesOptions,
-            prefixSumOffsets,
-            topQueryToCentroid,
-            k,
-            false, // L2 distance chooses smallest
-            outDistances,
-            outIndices,
-            stream);
-
-    CUDA_TEST_ERROR();
-}
-
-void runPQScanMultiPassPrecomputed(
-        Tensor<float, 2, true>& queries,
-        // (query id)(probe id)
-        Tensor<float, 2, true>& precompTerm1,
-        // (centroid id)(sub q)(code id)
-        NoTypeTensor<3, true>& precompTerm2,
-        // (query id)(sub q)(code id)
-        NoTypeTensor<3, true>& precompTerm3,
-        Tensor<int, 2, true>& topQueryToCentroid,
-        bool useFloat16Lookup,
-        bool interleavedCodeLayout,
-        int bitsPerSubQuantizer,
-        int numSubQuantizers,
-        int numSubQuantizerCodes,
-        thrust::device_vector<void*>& listCodes,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        thrust::device_vector<int>& listLengths,
-        int maxListLength,
-        int k,
-        // output
-        Tensor<float, 2, true>& outDistances,
-        // output
-        Tensor<Index::idx_t, 2, true>& outIndices,
-        GpuResources* res) {
-    constexpr int kMinQueryTileSize = 8;
-    constexpr int kMaxQueryTileSize = 128;
-    constexpr int kThrustMemSize = 16384;
-
-    int nprobe = topQueryToCentroid.getSize(1);
-
-    auto stream = res->getDefaultStreamCurrentDevice();
-
-    // Make a reservation for Thrust to do its dirty work (global memory
-    // cross-block reduction space); hopefully this is large enough.
-    DeviceTensor<char, 1, true> thrustMem1(
-            res, makeTempAlloc(AllocType::Other, stream), {kThrustMemSize});
-    DeviceTensor<char, 1, true> thrustMem2(
-            res, makeTempAlloc(AllocType::Other, stream), {kThrustMemSize});
-    DeviceTensor<char, 1, true>* thrustMem[2] = {&thrustMem1, &thrustMem2};
-
-    // How much temporary storage is available?
-    // If possible, we'd like to fit within the space available.
-    size_t sizeAvailable = res->getTempMemoryAvailableCurrentDevice();
-
-    // We run two passes of heap selection
-    // This is the size of the first-level heap passes
-    constexpr int kNProbeSplit = 8;
-    int pass2Chunks = std::min(nprobe, kNProbeSplit);
-
-    size_t sizeForFirstSelectPass =
-            pass2Chunks * k * (sizeof(float) + sizeof(int));
-
-    // How much temporary storage we need per each query
-    size_t sizePerQuery = 2 *                         // # streams
-            ((nprobe * sizeof(int) + sizeof(int)) +   // prefixSumOffsets
-             nprobe * maxListLength * sizeof(float) + // allDistances
-             sizeForFirstSelectPass);
-
-    int queryTileSize = (int)(sizeAvailable / sizePerQuery);
-
-    if (queryTileSize < kMinQueryTileSize) {
-        queryTileSize = kMinQueryTileSize;
-    } else if (queryTileSize > kMaxQueryTileSize) {
-        queryTileSize = kMaxQueryTileSize;
-    }
-
-    // FIXME: we should adjust queryTileSize to deal with this, since
-    // indexing is in int32
-    FAISS_ASSERT(
-            queryTileSize * nprobe * maxListLength <=
-            std::numeric_limits<int>::max());
-
-    // Temporary memory buffers
-    // Make sure there is space prior to the start which will be 0, and
-    // will handle the boundary condition without branches
-    DeviceTensor<int, 1, true> prefixSumOffsetSpace1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize * nprobe + 1});
-    DeviceTensor<int, 1, true> prefixSumOffsetSpace2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize * nprobe + 1});
-
-    DeviceTensor<int, 2, true> prefixSumOffsets1(
-            prefixSumOffsetSpace1[1].data(), {queryTileSize, nprobe});
-    DeviceTensor<int, 2, true> prefixSumOffsets2(
-            prefixSumOffsetSpace2[1].data(), {queryTileSize, nprobe});
-    DeviceTensor<int, 2, true>* prefixSumOffsets[2] = {
-            &prefixSumOffsets1, &prefixSumOffsets2};
-
-    // Make sure the element before prefixSumOffsets is 0, since we
-    // depend upon simple, boundary-less indexing to get proper results
-    CUDA_VERIFY(cudaMemsetAsync(
-            prefixSumOffsetSpace1.data(), 0, sizeof(int), stream));
-    CUDA_VERIFY(cudaMemsetAsync(
-            prefixSumOffsetSpace2.data(), 0, sizeof(int), stream));
-
-    DeviceTensor<float, 1, true> allDistances1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize * nprobe * maxListLength});
-    DeviceTensor<float, 1, true> allDistances2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize * nprobe * maxListLength});
-    DeviceTensor<float, 1, true>* allDistances[2] = {
-            &allDistances1, &allDistances2};
-
-    DeviceTensor<float, 3, true> heapDistances1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize, pass2Chunks, k});
-    DeviceTensor<float, 3, true> heapDistances2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize, pass2Chunks, k});
-    DeviceTensor<float, 3, true>* heapDistances[2] = {
-            &heapDistances1, &heapDistances2};
-
-    DeviceTensor<int, 3, true> heapIndices1(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize, pass2Chunks, k});
-    DeviceTensor<int, 3, true> heapIndices2(
-            res,
-            makeTempAlloc(AllocType::Other, stream),
-            {queryTileSize, pass2Chunks, k});
-    DeviceTensor<int, 3, true>* heapIndices[2] = {&heapIndices1, &heapIndices2};
-
-    auto streams = res->getAlternateStreamsCurrentDevice();
-    streamWait(streams, {stream});
-
-    int curStream = 0;
-
-    for (int query = 0; query < queries.getSize(0); query += queryTileSize) {
-        int numQueriesInTile =
-                std::min(queryTileSize, queries.getSize(0) - query);
-
-        auto prefixSumOffsetsView =
-                prefixSumOffsets[curStream]->narrowOutermost(
-                        0, numQueriesInTile);
-
-        auto coarseIndicesView =
-                topQueryToCentroid.narrowOutermost(query, numQueriesInTile);
-        auto queryView = queries.narrowOutermost(query, numQueriesInTile);
-        auto term1View = precompTerm1.narrowOutermost(query, numQueriesInTile);
-        auto term3View = precompTerm3.narrowOutermost(query, numQueriesInTile);
-
-        auto heapDistancesView =
-                heapDistances[curStream]->narrowOutermost(0, numQueriesInTile);
-        auto heapIndicesView =
-                heapIndices[curStream]->narrowOutermost(0, numQueriesInTile);
-
-        auto outDistanceView =
-                outDistances.narrowOutermost(query, numQueriesInTile);
-        auto outIndicesView =
-                outIndices.narrowOutermost(query, numQueriesInTile);
-
-        runMultiPassTile(
-                res,
-                queryView,
-                term1View,
-                precompTerm2,
-                term3View,
-                coarseIndicesView,
-                useFloat16Lookup,
-                interleavedCodeLayout,
-                bitsPerSubQuantizer,
-                numSubQuantizers,
-                numSubQuantizerCodes,
-                listCodes,
-                listIndices,
-                indicesOptions,
-                listLengths,
-                *thrustMem[curStream],
-                prefixSumOffsetsView,
-                *allDistances[curStream],
-                heapDistancesView,
-                heapIndicesView,
-                k,
-                outDistanceView,
-                outIndicesView,
-                streams[curStream]);
-
-        curStream = (curStream + 1) % 2;
-    }
-
-    streamWait({stream}, streams);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/PQScanMultiPassPrecomputed.cuh b/faiss/gpu_cuda/impl/PQScanMultiPassPrecomputed.cuh
deleted file mode 100644
index 778825d30d659947edea7902e36cccaed7c28233..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/PQScanMultiPassPrecomputed.cuh
+++ /dev/null
@@ -1,45 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/Index.h>
-#include <faiss/gpu/GpuIndicesOptions.h>
-#include <thrust/device_vector.h>
-#include <faiss/gpu/utils/NoTypeTensor.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-class GpuResources;
-
-void runPQScanMultiPassPrecomputed(
-        Tensor<float, 2, true>& queries,
-        Tensor<float, 2, true>& precompTerm1,
-        NoTypeTensor<3, true>& precompTerm2,
-        NoTypeTensor<3, true>& precompTerm3,
-        Tensor<int, 2, true>& topQueryToCentroid,
-        bool useFloat16Lookup,
-        bool interleavedCodeLayout,
-        int bitsPerSubQuantizer,
-        int numSubQuantizers,
-        int numSubQuantizerCodes,
-        thrust::device_vector<void*>& listCodes,
-        thrust::device_vector<void*>& listIndices,
-        IndicesOptions indicesOptions,
-        thrust::device_vector<int>& listLengths,
-        int maxListLength,
-        int k,
-        // output
-        Tensor<float, 2, true>& outDistances,
-        // output
-        Tensor<Index::idx_t, 2, true>& outIndices,
-        GpuResources* res);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/RemapIndices.cpp b/faiss/gpu_cuda/impl/RemapIndices.cpp
deleted file mode 100644
index 321400c6e0f3447ea7906337b1ea00f1e61e8adc..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/RemapIndices.cpp
+++ /dev/null
@@ -1,45 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/impl/RemapIndices.h>
-#include <faiss/impl/FaissAssert.h>
-
-namespace faiss {
-namespace gpu {
-
-// Utility function to translate (list id, offset) to a user index on
-// the CPU. In a cpp in order to use OpenMP
-void ivfOffsetToUserIndex(
-        Index::idx_t* indices,
-        int numLists,
-        int queries,
-        int k,
-        const std::vector<std::vector<Index::idx_t>>& listOffsetToUserIndex) {
-    FAISS_ASSERT(numLists == listOffsetToUserIndex.size());
-
-#pragma omp parallel for
-    for (int q = 0; q < queries; ++q) {
-        for (int r = 0; r < k; ++r) {
-            auto offsetIndex = indices[q * k + r];
-
-            if (offsetIndex < 0)
-                continue;
-
-            int listId = (int)(offsetIndex >> 32);
-            int listOffset = (int)(offsetIndex & 0xffffffff);
-
-            FAISS_ASSERT(listId < numLists);
-            auto& listIndices = listOffsetToUserIndex[listId];
-
-            FAISS_ASSERT(listOffset < listIndices.size());
-            indices[q * k + r] = listIndices[listOffset];
-        }
-    }
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/RemapIndices.h b/faiss/gpu_cuda/impl/RemapIndices.h
deleted file mode 100644
index db833959457b62544bab27a0268e0f5965eea2b8..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/RemapIndices.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/Index.h>
-#include <vector>
-
-namespace faiss {
-namespace gpu {
-
-/// Utility function to translate (list id, offset) to a user index on
-/// the CPU. In a cpp in order to use OpenMP.
-void ivfOffsetToUserIndex(
-        Index::idx_t* indices,
-        int numLists,
-        int queries,
-        int k,
-        const std::vector<std::vector<Index::idx_t>>& listOffsetToUserIndex);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/VectorResidual.cu b/faiss/gpu_cuda/impl/VectorResidual.cu
deleted file mode 100644
index 2e51677d5a80ce2c5568db6dff443bf0c4f5697b..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/VectorResidual.cu
+++ /dev/null
@@ -1,156 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/impl/FaissAssert.h>
-#include <math_constants.h> // in CUDA SDK, for CUDART_NAN_F
-#include <faiss/gpu/impl/VectorResidual.cuh>
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-#include <algorithm>
-
-namespace faiss {
-namespace gpu {
-
-template <typename CentroidT, bool LargeDim>
-__global__ void calcResidual(
-        Tensor<float, 2, true> vecs,
-        Tensor<CentroidT, 2, true> centroids,
-        Tensor<int, 1, true> vecToCentroid,
-        Tensor<float, 2, true> residuals) {
-    auto vec = vecs[blockIdx.x];
-    auto residual = residuals[blockIdx.x];
-
-    int centroidId = vecToCentroid[blockIdx.x];
-    // Vector could be invalid (containing NaNs), so -1 was the
-    // classified centroid
-    if (centroidId == -1) {
-        if (LargeDim) {
-            for (int i = threadIdx.x; i < vecs.getSize(1); i += blockDim.x) {
-                residual[i] = CUDART_NAN_F;
-            }
-        } else {
-            residual[threadIdx.x] = CUDART_NAN_F;
-        }
-
-        return;
-    }
-
-    auto centroid = centroids[centroidId];
-
-    if (LargeDim) {
-        for (int i = threadIdx.x; i < vecs.getSize(1); i += blockDim.x) {
-            residual[i] = vec[i] - ConvertTo<float>::to(centroid[i]);
-        }
-    } else {
-        residual[threadIdx.x] =
-                vec[threadIdx.x] - ConvertTo<float>::to(centroid[threadIdx.x]);
-    }
-}
-
-template <typename T>
-__global__ void gatherReconstruct(
-        Tensor<int, 1, true> listIds,
-        Tensor<T, 2, true> vecs,
-        Tensor<float, 2, true> out) {
-    auto id = listIds[blockIdx.x];
-    auto vec = vecs[id];
-    auto outVec = out[blockIdx.x];
-
-    Convert<T, float> conv;
-
-    for (int i = threadIdx.x; i < vecs.getSize(1); i += blockDim.x) {
-        outVec[i] = id == -1 ? 0.0f : conv(vec[i]);
-    }
-}
-
-template <typename CentroidT>
-void calcResidual(
-        Tensor<float, 2, true>& vecs,
-        Tensor<CentroidT, 2, true>& centroids,
-        Tensor<int, 1, true>& vecToCentroid,
-        Tensor<float, 2, true>& residuals,
-        cudaStream_t stream) {
-    FAISS_ASSERT(vecs.getSize(1) == centroids.getSize(1));
-    FAISS_ASSERT(vecs.getSize(1) == residuals.getSize(1));
-    FAISS_ASSERT(vecs.getSize(0) == vecToCentroid.getSize(0));
-    FAISS_ASSERT(vecs.getSize(0) == residuals.getSize(0));
-
-    dim3 grid(vecs.getSize(0));
-
-    int maxThreads = getMaxThreadsCurrentDevice();
-    bool largeDim = vecs.getSize(1) > maxThreads;
-    dim3 block(std::min(vecs.getSize(1), maxThreads));
-
-    if (largeDim) {
-        calcResidual<CentroidT, true><<<grid, block, 0, stream>>>(
-                vecs, centroids, vecToCentroid, residuals);
-    } else {
-        calcResidual<CentroidT, false><<<grid, block, 0, stream>>>(
-                vecs, centroids, vecToCentroid, residuals);
-    }
-
-    CUDA_TEST_ERROR();
-}
-
-template <typename T>
-void gatherReconstruct(
-        Tensor<int, 1, true>& listIds,
-        Tensor<T, 2, true>& vecs,
-        Tensor<float, 2, true>& out,
-        cudaStream_t stream) {
-    FAISS_ASSERT(listIds.getSize(0) == out.getSize(0));
-    FAISS_ASSERT(vecs.getSize(1) == out.getSize(1));
-
-    dim3 grid(listIds.getSize(0));
-
-    int maxThreads = getMaxThreadsCurrentDevice();
-    dim3 block(std::min(vecs.getSize(1), maxThreads));
-
-    gatherReconstruct<T><<<grid, block, 0, stream>>>(listIds, vecs, out);
-
-    CUDA_TEST_ERROR();
-}
-
-void runCalcResidual(
-        Tensor<float, 2, true>& vecs,
-        Tensor<float, 2, true>& centroids,
-        Tensor<int, 1, true>& vecToCentroid,
-        Tensor<float, 2, true>& residuals,
-        cudaStream_t stream) {
-    calcResidual<float>(vecs, centroids, vecToCentroid, residuals, stream);
-}
-
-void runCalcResidual(
-        Tensor<float, 2, true>& vecs,
-        Tensor<half, 2, true>& centroids,
-        Tensor<int, 1, true>& vecToCentroid,
-        Tensor<float, 2, true>& residuals,
-        cudaStream_t stream) {
-    calcResidual<half>(vecs, centroids, vecToCentroid, residuals, stream);
-}
-
-void runReconstruct(
-        Tensor<int, 1, true>& listIds,
-        Tensor<float, 2, true>& vecs,
-        Tensor<float, 2, true>& out,
-        cudaStream_t stream) {
-    gatherReconstruct<float>(listIds, vecs, out, stream);
-}
-
-void runReconstruct(
-        Tensor<int, 1, true>& listIds,
-        Tensor<half, 2, true>& vecs,
-        Tensor<float, 2, true>& out,
-        cudaStream_t stream) {
-    gatherReconstruct<half>(listIds, vecs, out, stream);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/VectorResidual.cuh b/faiss/gpu_cuda/impl/VectorResidual.cuh
deleted file mode 100644
index 7c9b9c9ad0df89e262e47606306d905bf502af42..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/VectorResidual.cuh
+++ /dev/null
@@ -1,44 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-// Calculates residual v_i - c_j for all v_i in vecs where j = vecToCentroid[i]
-void runCalcResidual(
-        Tensor<float, 2, true>& vecs,
-        Tensor<float, 2, true>& centroids,
-        Tensor<int, 1, true>& vecToCentroid,
-        Tensor<float, 2, true>& residuals,
-        cudaStream_t stream);
-
-void runCalcResidual(
-        Tensor<float, 2, true>& vecs,
-        Tensor<half, 2, true>& centroids,
-        Tensor<int, 1, true>& vecToCentroid,
-        Tensor<float, 2, true>& residuals,
-        cudaStream_t stream);
-
-// Gather vectors
-void runReconstruct(
-        Tensor<int, 1, true>& listIds,
-        Tensor<float, 2, true>& vecs,
-        Tensor<float, 2, true>& out,
-        cudaStream_t stream);
-
-void runReconstruct(
-        Tensor<int, 1, true>& listIds,
-        Tensor<half, 2, true>& vecs,
-        Tensor<float, 2, true>& out,
-        cudaStream_t stream);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/scan/IVFInterleaved1.cu b/faiss/gpu_cuda/impl/scan/IVFInterleaved1.cu
deleted file mode 100644
index 01c94a64efff9e82bc750c28e3d77dd905cc5583..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/scan/IVFInterleaved1.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/impl/scan/IVFInterleavedImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-IVF_INTERLEAVED_IMPL(128, 1, 1)
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/scan/IVFInterleaved1024.cu b/faiss/gpu_cuda/impl/scan/IVFInterleaved1024.cu
deleted file mode 100644
index dc62d9f52a42e68472cc9c06d3c05b9896314acf..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/scan/IVFInterleaved1024.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/impl/scan/IVFInterleavedImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-IVF_INTERLEAVED_IMPL(128, 1024, 8)
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/scan/IVFInterleaved128.cu b/faiss/gpu_cuda/impl/scan/IVFInterleaved128.cu
deleted file mode 100644
index 18e0c514f70f0a00d4b618ff68ef51e2053a9d69..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/scan/IVFInterleaved128.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/impl/scan/IVFInterleavedImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-IVF_INTERLEAVED_IMPL(128, 128, 3)
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/scan/IVFInterleaved2048.cu b/faiss/gpu_cuda/impl/scan/IVFInterleaved2048.cu
deleted file mode 100644
index e7b8398124af41fb599e073fb4f9c2bf271a781b..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/scan/IVFInterleaved2048.cu
+++ /dev/null
@@ -1,18 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/impl/scan/IVFInterleavedImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-#if GPU_MAX_SELECTION_K >= 2048
-IVF_INTERLEAVED_IMPL(64, 2048, 8)
-#endif
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/scan/IVFInterleaved256.cu b/faiss/gpu_cuda/impl/scan/IVFInterleaved256.cu
deleted file mode 100644
index ecfe8693d217942b94980617379e278c74ae503b..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/scan/IVFInterleaved256.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/impl/scan/IVFInterleavedImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-IVF_INTERLEAVED_IMPL(128, 256, 4)
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/scan/IVFInterleaved32.cu b/faiss/gpu_cuda/impl/scan/IVFInterleaved32.cu
deleted file mode 100644
index 3b19a890026a93d548b4448bcc7460ef6c49b265..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/scan/IVFInterleaved32.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/impl/scan/IVFInterleavedImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-IVF_INTERLEAVED_IMPL(128, 32, 2)
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/scan/IVFInterleaved512.cu b/faiss/gpu_cuda/impl/scan/IVFInterleaved512.cu
deleted file mode 100644
index 27bb8c8347202b58dd5b037f7cec6831f2c7ca95..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/scan/IVFInterleaved512.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/impl/scan/IVFInterleavedImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-IVF_INTERLEAVED_IMPL(128, 512, 8)
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/scan/IVFInterleaved64.cu b/faiss/gpu_cuda/impl/scan/IVFInterleaved64.cu
deleted file mode 100644
index 0788f844280f0dcf04ffd39eac2dd09d3888c534..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/scan/IVFInterleaved64.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/impl/scan/IVFInterleavedImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-IVF_INTERLEAVED_IMPL(128, 64, 3)
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/impl/scan/IVFInterleavedImpl.cuh b/faiss/gpu_cuda/impl/scan/IVFInterleavedImpl.cuh
deleted file mode 100644
index 72289731997341011cf1138ca57226246ac557b2..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/impl/scan/IVFInterleavedImpl.cuh
+++ /dev/null
@@ -1,88 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/impl/IVFInterleaved.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-
-#define IVF_INTERLEAVED_IMPL(THREADS, WARP_Q, THREAD_Q) \
-                                                        \
-    void ivfInterleavedScanImpl_##WARP_Q##_(            \
-            Tensor<float, 2, true>& queries,            \
-            Tensor<int, 2, true>& listIds,              \
-            thrust::device_vector<void*>& listData,     \
-            thrust::device_vector<void*>& listIndices,  \
-            IndicesOptions indicesOptions,              \
-            thrust::device_vector<int>& listLengths,    \
-            int k,                                      \
-            faiss::MetricType metric,                   \
-            bool useResidual,                           \
-            Tensor<float, 3, true>& residualBase,       \
-            GpuScalarQuantizer* scalarQ,                \
-            Tensor<float, 2, true>& outDistances,       \
-            Tensor<Index::idx_t, 2, true>& outIndices,  \
-            GpuResources* res) {                        \
-        FAISS_ASSERT(k <= WARP_Q);                      \
-                                                        \
-        IVFINT_METRICS(THREADS, WARP_Q, THREAD_Q);      \
-                                                        \
-        CUDA_TEST_ERROR();                              \
-    }
-
-#define IVF_INTERLEAVED_DECL(WARP_Q)                   \
-                                                       \
-    void ivfInterleavedScanImpl_##WARP_Q##_(           \
-            Tensor<float, 2, true>& queries,           \
-            Tensor<int, 2, true>& listIds,             \
-            thrust::device_vector<void*>& listData,    \
-            thrust::device_vector<void*>& listIndices, \
-            IndicesOptions indicesOptions,             \
-            thrust::device_vector<int>& listLengths,   \
-            int k,                                     \
-            faiss::MetricType metric,                  \
-            bool useResidual,                          \
-            Tensor<float, 3, true>& residualBase,      \
-            GpuScalarQuantizer* scalarQ,               \
-            Tensor<float, 2, true>& outDistances,      \
-            Tensor<Index::idx_t, 2, true>& outIndices, \
-            GpuResources* res)
-
-#define IVF_INTERLEAVED_CALL(WARP_Q)    \
-    ivfInterleavedScanImpl_##WARP_Q##_( \
-            queries,                    \
-            listIds,                    \
-            listData,                   \
-            listIndices,                \
-            indicesOptions,             \
-            listLengths,                \
-            k,                          \
-            metric,                     \
-            useResidual,                \
-            residualBase,               \
-            scalarQ,                    \
-            outDistances,               \
-            outIndices,                 \
-            res)
-
-namespace faiss {
-namespace gpu {
-
-IVF_INTERLEAVED_DECL(1);
-IVF_INTERLEAVED_DECL(32);
-IVF_INTERLEAVED_DECL(64);
-IVF_INTERLEAVED_DECL(128);
-IVF_INTERLEAVED_DECL(256);
-IVF_INTERLEAVED_DECL(512);
-IVF_INTERLEAVED_DECL(1024);
-
-#if GPU_MAX_SELECTION_K >= 2048
-IVF_INTERLEAVED_DECL(2048);
-#endif
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/perf/IndexWrapper-inl.h b/faiss/gpu_cuda/perf/IndexWrapper-inl.h
deleted file mode 100644
index f3980cecfe1aabab25c813ac33c5476276224e4e..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/perf/IndexWrapper-inl.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/impl/FaissAssert.h>
-
-namespace faiss {
-namespace gpu {
-
-template <typename GpuIndex>
-IndexWrapper<GpuIndex>::IndexWrapper(
-        int numGpus,
-        std::function<std::unique_ptr<GpuIndex>(GpuResourcesProvider*, int)>
-                init) {
-    FAISS_ASSERT(numGpus <= faiss::gpu::getNumDevices());
-    for (int i = 0; i < numGpus; ++i) {
-        auto res = std::unique_ptr<faiss::gpu::StandardGpuResources>(
-                new StandardGpuResources);
-
-        subIndex.emplace_back(init(res.get(), i));
-        resources.emplace_back(std::move(res));
-    }
-
-    if (numGpus > 1) {
-        // create proxy
-        replicaIndex =
-                std::unique_ptr<faiss::IndexReplicas>(new faiss::IndexReplicas);
-
-        for (auto& index : subIndex) {
-            replicaIndex->addIndex(index.get());
-        }
-    }
-}
-
-template <typename GpuIndex>
-faiss::Index* IndexWrapper<GpuIndex>::getIndex() {
-    if ((bool)replicaIndex) {
-        return replicaIndex.get();
-    } else {
-        FAISS_ASSERT(!subIndex.empty());
-        return subIndex.front().get();
-    }
-}
-
-template <typename GpuIndex>
-void IndexWrapper<GpuIndex>::runOnIndices(std::function<void(GpuIndex*)> f) {
-    if ((bool)replicaIndex) {
-        replicaIndex->runOnIndex([f](int, faiss::Index* index) {
-            f(dynamic_cast<GpuIndex*>(index));
-        });
-    } else {
-        FAISS_ASSERT(!subIndex.empty());
-        f(subIndex.front().get());
-    }
-}
-
-template <typename GpuIndex>
-void IndexWrapper<GpuIndex>::setNumProbes(int nprobe) {
-    runOnIndices([nprobe](GpuIndex* index) { index->setNumProbes(nprobe); });
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/perf/IndexWrapper.h b/faiss/gpu_cuda/perf/IndexWrapper.h
deleted file mode 100644
index b9a22e845583dc9ff864d785eae2935e468e78c4..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/perf/IndexWrapper.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/IndexReplicas.h>
-#include <faiss/gpu/StandardGpuResources.h>
-#include <functional>
-#include <memory>
-#include <vector>
-
-namespace faiss {
-namespace gpu {
-
-// If we want to run multi-GPU, create a proxy to wrap the indices.
-// If we don't want multi-GPU, don't involve the proxy, so it doesn't
-// affect the timings.
-template <typename GpuIndex>
-struct IndexWrapper {
-    std::vector<std::unique_ptr<faiss::gpu::StandardGpuResources>> resources;
-    std::vector<std::unique_ptr<GpuIndex>> subIndex;
-    std::unique_ptr<faiss::IndexReplicas> replicaIndex;
-
-    IndexWrapper(
-            int numGpus,
-            std::function<std::unique_ptr<GpuIndex>(GpuResourcesProvider*, int)>
-                    init);
-    faiss::Index* getIndex();
-
-    void runOnIndices(std::function<void(GpuIndex*)> f);
-    void setNumProbes(int nprobe);
-};
-
-} // namespace gpu
-} // namespace faiss
-
-#include <faiss/gpu/perf/IndexWrapper-inl.h>
diff --git a/faiss/gpu_cuda/perf/PerfBinaryFlat.cu b/faiss/gpu_cuda/perf/PerfBinaryFlat.cu
deleted file mode 100644
index fae7c10166eaf8644f015c654aab4a91e1b8901c..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/perf/PerfBinaryFlat.cu
+++ /dev/null
@@ -1,122 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexBinaryFlat.h>
-#include <faiss/gpu/GpuIndexBinaryFlat.h>
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/Timer.h>
-#include <faiss/utils/random.h>
-#include <gflags/gflags.h>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-#include <map>
-#include <memory>
-#include <vector>
-
-#include <cuda_profiler_api.h>
-
-DEFINE_int32(k, 3, "final number of closest results returned");
-DEFINE_int32(num, 128, "# of vecs");
-DEFINE_int32(dim, 128, "# of dimensions");
-DEFINE_int32(num_queries, 3, "number of query vectors");
-DEFINE_int64(seed, -1, "specify random seed");
-DEFINE_int64(pinned_mem, 0, "pinned memory allocation to use");
-DEFINE_bool(cpu, true, "run the CPU code for timing and comparison");
-DEFINE_bool(use_unified_mem, false, "use Pascal unified memory for the index");
-
-using namespace faiss::gpu;
-
-int main(int argc, char** argv) {
-    gflags::ParseCommandLineFlags(&argc, &argv, true);
-
-    cudaProfilerStop();
-
-    auto seed = FLAGS_seed != -1L ? FLAGS_seed : time(nullptr);
-    printf("using seed %ld\n", seed);
-
-    auto numQueries = FLAGS_num_queries;
-
-    auto index = std::unique_ptr<faiss::IndexBinaryFlat>(
-            new faiss::IndexBinaryFlat(FLAGS_dim));
-
-    HostTensor<unsigned char, 2, true> vecs({FLAGS_num, FLAGS_dim / 8});
-    faiss::byte_rand(vecs.data(), vecs.numElements(), seed);
-
-    index->add(FLAGS_num, vecs.data());
-
-    printf("Database: dim %d num vecs %d\n", FLAGS_dim, FLAGS_num);
-    printf("Hamming lookup: %d queries, total k %d\n", numQueries, FLAGS_k);
-
-    // Convert to GPU index
-    printf("Copying index to GPU...\n");
-
-    GpuIndexBinaryFlatConfig config;
-    config.memorySpace =
-            FLAGS_use_unified_mem ? MemorySpace::Unified : MemorySpace::Device;
-
-    faiss::gpu::StandardGpuResources res;
-
-    faiss::gpu::GpuIndexBinaryFlat gpuIndex(&res, index.get(), config);
-    printf("copy done\n");
-
-    // Build query vectors
-    HostTensor<unsigned char, 2, true> cpuQuery({numQueries, FLAGS_dim / 8});
-    faiss::byte_rand(cpuQuery.data(), cpuQuery.numElements(), seed);
-
-    // Time faiss CPU
-    HostTensor<int, 2, true> cpuDistances({numQueries, FLAGS_k});
-    HostTensor<faiss::IndexBinary::idx_t, 2, true> cpuIndices(
-            {numQueries, FLAGS_k});
-
-    if (FLAGS_cpu) {
-        float cpuTime = 0.0f;
-
-        CpuTimer timer;
-        index->search(
-                numQueries,
-                cpuQuery.data(),
-                FLAGS_k,
-                cpuDistances.data(),
-                cpuIndices.data());
-
-        cpuTime = timer.elapsedMilliseconds();
-        printf("CPU time %.3f ms\n", cpuTime);
-    }
-
-    HostTensor<int, 2, true> gpuDistances({numQueries, FLAGS_k});
-    HostTensor<faiss::Index::idx_t, 2, true> gpuIndices({numQueries, FLAGS_k});
-
-    CUDA_VERIFY(cudaProfilerStart());
-    faiss::gpu::synchronizeAllDevices();
-
-    float gpuTime = 0.0f;
-
-    // Time GPU
-    {
-        CpuTimer timer;
-
-        gpuIndex.search(
-                cpuQuery.getSize(0),
-                cpuQuery.data(),
-                FLAGS_k,
-                gpuDistances.data(),
-                gpuIndices.data());
-
-        // There is a device -> host copy above, so no need to time
-        // additional synchronization with the GPU
-        gpuTime = timer.elapsedMilliseconds();
-    }
-
-    CUDA_VERIFY(cudaProfilerStop());
-    printf("GPU time %.3f ms\n", gpuTime);
-
-    CUDA_VERIFY(cudaDeviceSynchronize());
-
-    return 0;
-}
diff --git a/faiss/gpu_cuda/perf/PerfClustering.cpp b/faiss/gpu_cuda/perf/PerfClustering.cpp
deleted file mode 100644
index 7586b43575d5032562e24a3defdb3b9ea807177b..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/perf/PerfClustering.cpp
+++ /dev/null
@@ -1,121 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/Clustering.h>
-#include <faiss/gpu/GpuIndexFlat.h>
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/gpu/perf/IndexWrapper.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/Timer.h>
-#include <faiss/utils/random.h>
-#include <gflags/gflags.h>
-#include <memory>
-#include <vector>
-
-#include <cuda_profiler_api.h>
-
-DEFINE_int32(num, 10000, "# of vecs");
-DEFINE_int32(k, 100, "# of clusters");
-DEFINE_int32(dim, 128, "# of dimensions");
-DEFINE_int32(niter, 10, "# of iterations");
-DEFINE_bool(L2_metric, true, "If true, use L2 metric. If false, use IP metric");
-DEFINE_bool(use_float16, false, "use float16 vectors and math");
-DEFINE_bool(transposed, false, "transposed vector storage");
-DEFINE_bool(verbose, false, "turn on clustering logging");
-DEFINE_int64(seed, -1, "specify random seed");
-DEFINE_int32(num_gpus, 1, "number of gpus to use");
-DEFINE_int64(
-        min_paging_size,
-        -1,
-        "minimum size to use CPU -> GPU paged copies");
-DEFINE_int64(pinned_mem, -1, "pinned memory allocation to use");
-DEFINE_int32(max_points, -1, "max points per centroid");
-
-using namespace faiss::gpu;
-
-int main(int argc, char** argv) {
-    gflags::ParseCommandLineFlags(&argc, &argv, true);
-
-    cudaProfilerStop();
-
-    auto seed = FLAGS_seed != -1L ? FLAGS_seed : time(nullptr);
-    printf("using seed %ld\n", seed);
-
-    std::vector<float> vecs((size_t)FLAGS_num * FLAGS_dim);
-    faiss::float_rand(vecs.data(), vecs.size(), seed);
-
-    printf("K-means metric %s dim %d centroids %d num train %d niter %d\n",
-           FLAGS_L2_metric ? "L2" : "IP",
-           FLAGS_dim,
-           FLAGS_k,
-           FLAGS_num,
-           FLAGS_niter);
-    printf("float16 math %s\n", FLAGS_use_float16 ? "enabled" : "disabled");
-    printf("transposed storage %s\n",
-           FLAGS_transposed ? "enabled" : "disabled");
-    printf("verbose %s\n", FLAGS_verbose ? "enabled" : "disabled");
-
-    auto initFn = [](faiss::gpu::GpuResourcesProvider* res,
-                     int dev) -> std::unique_ptr<faiss::gpu::GpuIndexFlat> {
-        if (FLAGS_pinned_mem >= 0) {
-            ((faiss::gpu::StandardGpuResources*)res)
-                    ->setPinnedMemory(FLAGS_pinned_mem);
-        }
-
-        GpuIndexFlatConfig config;
-        config.device = dev;
-        config.useFloat16 = FLAGS_use_float16;
-        config.storeTransposed = FLAGS_transposed;
-
-        auto p = std::unique_ptr<faiss::gpu::GpuIndexFlat>(
-                FLAGS_L2_metric
-                        ? (faiss::gpu::GpuIndexFlat*)new faiss::gpu::
-                                  GpuIndexFlatL2(res, FLAGS_dim, config)
-                        : (faiss::gpu::GpuIndexFlat*)new faiss::gpu::
-                                  GpuIndexFlatIP(res, FLAGS_dim, config));
-
-        if (FLAGS_min_paging_size >= 0) {
-            p->setMinPagingSize(FLAGS_min_paging_size);
-        }
-        return p;
-    };
-
-    IndexWrapper<faiss::gpu::GpuIndexFlat> gpuIndex(FLAGS_num_gpus, initFn);
-
-    CUDA_VERIFY(cudaProfilerStart());
-    faiss::gpu::synchronizeAllDevices();
-
-    float gpuTime = 0.0f;
-
-    faiss::ClusteringParameters cp;
-    cp.niter = FLAGS_niter;
-    cp.verbose = FLAGS_verbose;
-
-    if (FLAGS_max_points > 0) {
-        cp.max_points_per_centroid = FLAGS_max_points;
-    }
-
-    faiss::Clustering kmeans(FLAGS_dim, FLAGS_k, cp);
-
-    // Time k-means
-    {
-        CpuTimer timer;
-
-        kmeans.train(FLAGS_num, vecs.data(), *(gpuIndex.getIndex()));
-
-        // There is a device -> host copy above, so no need to time
-        // additional synchronization with the GPU
-        gpuTime = timer.elapsedMilliseconds();
-    }
-
-    CUDA_VERIFY(cudaProfilerStop());
-    printf("k-means time %.3f ms\n", gpuTime);
-
-    CUDA_VERIFY(cudaDeviceSynchronize());
-
-    return 0;
-}
diff --git a/faiss/gpu_cuda/perf/PerfFlat.cu b/faiss/gpu_cuda/perf/PerfFlat.cu
deleted file mode 100644
index bf71a5b9b313b71d28117b57f2f77fd102fe6f0b..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/perf/PerfFlat.cu
+++ /dev/null
@@ -1,159 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexFlat.h>
-#include <faiss/gpu/GpuIndexFlat.h>
-#include <faiss/gpu/perf/IndexWrapper.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/Timer.h>
-#include <faiss/utils/random.h>
-#include <gflags/gflags.h>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-#include <map>
-#include <memory>
-#include <vector>
-
-#include <cuda_profiler_api.h>
-
-DEFINE_bool(l2, true, "L2 or inner product");
-DEFINE_int32(k, 3, "final number of closest results returned");
-DEFINE_int32(num, 128, "# of vecs");
-DEFINE_int32(dim, 128, "# of dimensions");
-DEFINE_int32(num_queries, 3, "number of query vectors");
-DEFINE_bool(diff, true, "show exact distance + index output discrepancies");
-DEFINE_bool(use_float16, false, "use encodings in float16");
-DEFINE_bool(use_float16_math, false, "perform math in float16");
-DEFINE_bool(transposed, false, "store vectors transposed");
-DEFINE_int64(seed, -1, "specify random seed");
-DEFINE_int32(num_gpus, 1, "number of gpus to use");
-DEFINE_int64(pinned_mem, 0, "pinned memory allocation to use");
-DEFINE_bool(cpu, true, "run the CPU code for timing and comparison");
-DEFINE_bool(use_unified_mem, false, "use Pascal unified memory for the index");
-
-using namespace faiss::gpu;
-
-int main(int argc, char** argv) {
-    gflags::ParseCommandLineFlags(&argc, &argv, true);
-
-    cudaProfilerStop();
-
-    auto seed = FLAGS_seed != -1L ? FLAGS_seed : time(nullptr);
-    printf("using seed %ld\n", seed);
-
-    auto numQueries = FLAGS_num_queries;
-
-    auto index = std::unique_ptr<faiss::IndexFlat>(new faiss::IndexFlat(
-            FLAGS_dim,
-            FLAGS_l2 ? faiss::METRIC_L2 : faiss::METRIC_INNER_PRODUCT));
-
-    HostTensor<float, 2, true> vecs({FLAGS_num, FLAGS_dim});
-    faiss::float_rand(vecs.data(), vecs.numElements(), seed);
-
-    index->add(FLAGS_num, vecs.data());
-
-    printf("Database: dim %d num vecs %d\n", FLAGS_dim, FLAGS_num);
-    printf("%s lookup: %d queries, total k %d\n",
-           FLAGS_l2 ? "L2" : "IP",
-           numQueries,
-           FLAGS_k);
-    printf("float16 encoding %s\n", FLAGS_use_float16 ? "enabled" : "disabled");
-    printf("transposed storage %s\n",
-           FLAGS_transposed ? "enabled" : "disabled");
-
-    // Convert to GPU index
-    printf("Copying index to %d GPU(s)...\n", FLAGS_num_gpus);
-
-    auto initFn = [&index](faiss::gpu::GpuResourcesProvider* res, int dev)
-            -> std::unique_ptr<faiss::gpu::GpuIndexFlat> {
-        ((faiss::gpu::StandardGpuResources*)res)
-                ->setPinnedMemory(FLAGS_pinned_mem);
-
-        GpuIndexFlatConfig config;
-        config.device = dev;
-        config.useFloat16 = FLAGS_use_float16;
-        config.storeTransposed = FLAGS_transposed;
-        config.memorySpace = FLAGS_use_unified_mem ? MemorySpace::Unified
-                                                   : MemorySpace::Device;
-
-        auto p = std::unique_ptr<faiss::gpu::GpuIndexFlat>(
-                new faiss::gpu::GpuIndexFlat(res, index.get(), config));
-        return p;
-    };
-
-    IndexWrapper<faiss::gpu::GpuIndexFlat> gpuIndex(FLAGS_num_gpus, initFn);
-    printf("copy done\n");
-
-    // Build query vectors
-    HostTensor<float, 2, true> cpuQuery({numQueries, FLAGS_dim});
-    faiss::float_rand(cpuQuery.data(), cpuQuery.numElements(), seed);
-
-    // Time faiss CPU
-    HostTensor<float, 2, true> cpuDistances({numQueries, FLAGS_k});
-    HostTensor<faiss::Index::idx_t, 2, true> cpuIndices({numQueries, FLAGS_k});
-
-    if (FLAGS_cpu) {
-        float cpuTime = 0.0f;
-
-        CpuTimer timer;
-        index->search(
-                numQueries,
-                cpuQuery.data(),
-                FLAGS_k,
-                cpuDistances.data(),
-                cpuIndices.data());
-
-        cpuTime = timer.elapsedMilliseconds();
-        printf("CPU time %.3f ms\n", cpuTime);
-    }
-
-    HostTensor<float, 2, true> gpuDistances({numQueries, FLAGS_k});
-    HostTensor<faiss::Index::idx_t, 2, true> gpuIndices({numQueries, FLAGS_k});
-
-    CUDA_VERIFY(cudaProfilerStart());
-    faiss::gpu::synchronizeAllDevices();
-
-    float gpuTime = 0.0f;
-
-    // Time GPU
-    {
-        CpuTimer timer;
-
-        gpuIndex.getIndex()->search(
-                cpuQuery.getSize(0),
-                cpuQuery.data(),
-                FLAGS_k,
-                gpuDistances.data(),
-                gpuIndices.data());
-
-        // There is a device -> host copy above, so no need to time
-        // additional synchronization with the GPU
-        gpuTime = timer.elapsedMilliseconds();
-    }
-
-    CUDA_VERIFY(cudaProfilerStop());
-    printf("GPU time %.3f ms\n", gpuTime);
-
-    if (FLAGS_cpu) {
-        compareLists(
-                cpuDistances.data(),
-                cpuIndices.data(),
-                gpuDistances.data(),
-                gpuIndices.data(),
-                numQueries,
-                FLAGS_k,
-                "",
-                true,
-                FLAGS_diff,
-                false);
-    }
-
-    CUDA_VERIFY(cudaDeviceSynchronize());
-
-    return 0;
-}
diff --git a/faiss/gpu_cuda/perf/PerfIVFFlat.cu b/faiss/gpu_cuda/perf/PerfIVFFlat.cu
deleted file mode 100644
index 1b83d4f84a25bdcfe363bedb180b69ca7ed76426..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/perf/PerfIVFFlat.cu
+++ /dev/null
@@ -1,156 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexIVFFlat.h>
-#include <faiss/index_io.h>
-#include <faiss/utils/random.h>
-
-#include <faiss/gpu/GpuIndexIVFFlat.h>
-#include <faiss/gpu/perf/IndexWrapper.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/Timer.h>
-#include <gflags/gflags.h>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-#include <map>
-#include <memory>
-#include <vector>
-
-#include <cuda_profiler_api.h>
-
-DEFINE_int32(nprobe, 5, "number of coarse centroids to probe");
-DEFINE_int32(k, 3, "final number of closest results returned");
-DEFINE_int32(num_queries, 3, "number of query vectors");
-DEFINE_string(in, "/home/jhj/local/index.out", "index file for input");
-DEFINE_bool(diff, true, "show exact distance + index output discrepancies");
-DEFINE_bool(use_float16_coarse, false, "coarse quantizer in float16");
-DEFINE_int64(seed, -1, "specify random seed");
-DEFINE_int32(num_gpus, 1, "number of gpus to use");
-DEFINE_int32(index, 2, "0 = no indices on GPU; 1 = 32 bit, 2 = 64 bit on GPU");
-
-using namespace faiss::gpu;
-
-int main(int argc, char** argv) {
-    gflags::ParseCommandLineFlags(&argc, &argv, true);
-
-    cudaProfilerStop();
-
-    auto seed = FLAGS_seed != -1L ? FLAGS_seed : time(nullptr);
-    printf("using seed %ld\n", seed);
-
-    auto numQueries = FLAGS_num_queries;
-
-    auto index = std::unique_ptr<faiss::IndexIVFFlat>(
-            dynamic_cast<faiss::IndexIVFFlat*>(
-                    faiss::read_index(FLAGS_in.c_str())));
-    FAISS_ASSERT((bool)index);
-    index->nprobe = FLAGS_nprobe;
-
-    auto dim = index->d;
-
-    printf("Database: dim %d num vecs %ld\n", dim, index->ntotal);
-    printf("Coarse centroids: %ld\n", index->quantizer->ntotal);
-    printf("L2 lookup: %d queries, nprobe %d, total k %d\n",
-           numQueries,
-           FLAGS_nprobe,
-           FLAGS_k);
-    printf("float16 coarse quantizer %s\n",
-           FLAGS_use_float16_coarse ? "enabled" : "disabled");
-
-    // Convert to GPU index
-    printf("Copying index to %d GPU(s)...\n", FLAGS_num_gpus);
-
-    auto initFn = [&index](faiss::gpu::GpuResourcesProvider* res, int dev)
-            -> std::unique_ptr<faiss::gpu::GpuIndexIVFFlat> {
-        GpuIndexIVFFlatConfig config;
-        config.device = dev;
-        config.indicesOptions = (faiss::gpu::IndicesOptions)FLAGS_index;
-        config.flatConfig.useFloat16 = FLAGS_use_float16_coarse;
-
-        auto p = std::unique_ptr<faiss::gpu::GpuIndexIVFFlat>(
-                new faiss::gpu::GpuIndexIVFFlat(
-                        res,
-                        index->d,
-                        index->nlist,
-                        index->metric_type,
-                        config));
-        p->copyFrom(index.get());
-        return p;
-    };
-
-    IndexWrapper<faiss::gpu::GpuIndexIVFFlat> gpuIndex(FLAGS_num_gpus, initFn);
-    gpuIndex.setNumProbes(FLAGS_nprobe);
-    printf("copy done\n");
-
-    // Build query vectors
-    HostTensor<float, 2, true> cpuQuery({numQueries, dim});
-    faiss::float_rand(cpuQuery.data(), cpuQuery.numElements(), seed);
-
-    // Time faiss CPU
-    HostTensor<float, 2, true> cpuDistances({numQueries, FLAGS_k});
-    HostTensor<faiss::Index::idx_t, 2, true> cpuIndices({numQueries, FLAGS_k});
-
-    float cpuTime = 0.0f;
-
-    {
-        CpuTimer timer;
-        index->search(
-                numQueries,
-                cpuQuery.data(),
-                FLAGS_k,
-                cpuDistances.data(),
-                cpuIndices.data());
-
-        cpuTime = timer.elapsedMilliseconds();
-    }
-
-    printf("CPU time %.3f ms\n", cpuTime);
-
-    HostTensor<float, 2, true> gpuDistances({numQueries, FLAGS_k});
-    HostTensor<faiss::Index::idx_t, 2, true> gpuIndices({numQueries, FLAGS_k});
-
-    CUDA_VERIFY(cudaProfilerStart());
-    faiss::gpu::synchronizeAllDevices();
-
-    float gpuTime = 0.0f;
-
-    // Time GPU
-    {
-        CpuTimer timer;
-
-        gpuIndex.getIndex()->search(
-                cpuQuery.getSize(0),
-                cpuQuery.data(),
-                FLAGS_k,
-                gpuDistances.data(),
-                gpuIndices.data());
-
-        // There is a device -> host copy above, so no need to time
-        // additional synchronization with the GPU
-        gpuTime = timer.elapsedMilliseconds();
-    }
-
-    CUDA_VERIFY(cudaProfilerStop());
-    printf("GPU time %.3f ms\n", gpuTime);
-
-    compareLists(
-            cpuDistances.data(),
-            cpuIndices.data(),
-            gpuDistances.data(),
-            gpuIndices.data(),
-            numQueries,
-            FLAGS_k,
-            "",
-            true,
-            FLAGS_diff,
-            false);
-
-    CUDA_VERIFY(cudaDeviceSynchronize());
-
-    return 0;
-}
diff --git a/faiss/gpu_cuda/perf/PerfIVFPQ.cu b/faiss/gpu_cuda/perf/PerfIVFPQ.cu
deleted file mode 100644
index 3665c1e107c4212f94525ef680de9ab2e6ab6c4d..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/perf/PerfIVFPQ.cu
+++ /dev/null
@@ -1,166 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexIVFPQ.h>
-#include <faiss/index_io.h>
-#include <faiss/utils/random.h>
-
-#include <faiss/gpu/GpuIndexIVFPQ.h>
-#include <faiss/gpu/perf/IndexWrapper.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/Timer.h>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-
-#include <cuda_profiler_api.h>
-#include <gflags/gflags.h>
-#include <map>
-#include <memory>
-#include <vector>
-
-DEFINE_int32(nprobe, 5, "number of coarse centroids to probe");
-DEFINE_int32(k, 3, "final number of closest results returned");
-DEFINE_int32(num_queries, 3, "number of query vectors");
-DEFINE_string(in, "/home/jhj/local/index.out", "index file for input");
-DEFINE_bool(diff, true, "show exact distance + index output discrepancies");
-DEFINE_bool(use_precomputed, true, "enable or disable precomputed codes");
-DEFINE_bool(float16_lookup, false, "use float16 residual distance tables");
-DEFINE_int64(seed, -1, "specify random seed");
-DEFINE_int32(num_gpus, 1, "number of gpus to use");
-DEFINE_int32(index, 2, "0 = no indices on GPU; 1 = 32 bit, 2 = 64 bit on GPU");
-
-using namespace faiss::gpu;
-
-int main(int argc, char** argv) {
-    gflags::ParseCommandLineFlags(&argc, &argv, true);
-
-    CUDA_VERIFY(cudaProfilerStop());
-
-    auto seed = FLAGS_seed != -1L ? FLAGS_seed : time(nullptr);
-    printf("using seed %ld\n", seed);
-
-    auto numQueries = FLAGS_num_queries;
-
-    auto index =
-            std::unique_ptr<faiss::IndexIVFPQ>(dynamic_cast<faiss::IndexIVFPQ*>(
-                    faiss::read_index(FLAGS_in.c_str())));
-    FAISS_ASSERT((bool)index);
-    index->nprobe = FLAGS_nprobe;
-
-    if (!FLAGS_use_precomputed) {
-        index->use_precomputed_table = 0;
-    }
-
-    auto dim = index->d;
-    auto codes = index->pq.M;
-    auto bitsPerCode = index->pq.nbits;
-
-    printf("Database: dim %d num vecs %ld\n", dim, index->ntotal);
-    printf("Coarse centroids: %ld\n", index->quantizer->ntotal);
-    printf("PQ centroids: codes %ld bits per code %ld\n", codes, bitsPerCode);
-    printf("L2 lookup: %d queries, nprobe %d, total k %d, "
-           "precomputed codes %d\n\n",
-           numQueries,
-           FLAGS_nprobe,
-           FLAGS_k,
-           FLAGS_use_precomputed);
-
-    // Convert to GPU index
-    printf("Copying index to %d GPU(s)...\n", FLAGS_num_gpus);
-
-    auto precomp = FLAGS_use_precomputed;
-    auto indicesOpt = (faiss::gpu::IndicesOptions)FLAGS_index;
-    auto useFloat16Lookup = FLAGS_float16_lookup;
-
-    auto initFn =
-            [precomp, indicesOpt, useFloat16Lookup, &index](
-                    faiss::gpu::GpuResourcesProvider* res,
-                    int dev) -> std::unique_ptr<faiss::gpu::GpuIndexIVFPQ> {
-        faiss::gpu::GpuIndexIVFPQConfig config;
-        config.device = dev;
-        config.usePrecomputedTables = precomp;
-        config.indicesOptions = indicesOpt;
-        config.useFloat16LookupTables = useFloat16Lookup;
-
-        auto p = std::unique_ptr<faiss::gpu::GpuIndexIVFPQ>(
-                new faiss::gpu::GpuIndexIVFPQ(res, index.get(), config));
-
-        return p;
-    };
-
-    IndexWrapper<faiss::gpu::GpuIndexIVFPQ> gpuIndex(FLAGS_num_gpus, initFn);
-    gpuIndex.setNumProbes(FLAGS_nprobe);
-    printf("copy done\n");
-
-    // Build query vectors
-    HostTensor<float, 2, true> cpuQuery({numQueries, dim});
-    faiss::float_rand(cpuQuery.data(), cpuQuery.numElements(), seed);
-
-    // Time faiss CPU
-    HostTensor<float, 2, true> cpuDistances({numQueries, FLAGS_k});
-    HostTensor<faiss::Index::idx_t, 2, true> cpuIndices({numQueries, FLAGS_k});
-
-    float cpuTime = 0.0f;
-
-    {
-        CpuTimer timer;
-        index->search(
-                numQueries,
-                cpuQuery.data(),
-                FLAGS_k,
-                cpuDistances.data(),
-                cpuIndices.data());
-
-        cpuTime = timer.elapsedMilliseconds();
-    }
-
-    printf("CPU time %.3f ms\n", cpuTime);
-
-    HostTensor<float, 2, true> gpuDistances({numQueries, FLAGS_k});
-    HostTensor<faiss::Index::idx_t, 2, true> gpuIndices({numQueries, FLAGS_k});
-
-    CUDA_VERIFY(cudaProfilerStart());
-    faiss::gpu::synchronizeAllDevices();
-
-    float gpuTime = 0.0f;
-
-    // Time GPU
-    {
-        CpuTimer timer;
-
-        gpuIndex.getIndex()->search(
-                cpuQuery.getSize(0),
-                cpuQuery.data(),
-                FLAGS_k,
-                gpuDistances.data(),
-                gpuIndices.data());
-
-        // There is a device -> host copy above, so no need to time
-        // additional synchronization with the GPU
-        gpuTime = timer.elapsedMilliseconds();
-    }
-
-    CUDA_VERIFY(cudaProfilerStop());
-    printf("GPU time %.3f ms\n", gpuTime);
-
-    compareLists(
-            cpuDistances.data(),
-            cpuIndices.data(),
-            gpuDistances.data(),
-            gpuIndices.data(),
-            numQueries,
-            FLAGS_k,
-            "",
-            true,
-            FLAGS_diff,
-            false);
-
-    CUDA_VERIFY(cudaDeviceSynchronize());
-
-    return 0;
-}
diff --git a/faiss/gpu_cuda/perf/PerfIVFPQAdd.cpp b/faiss/gpu_cuda/perf/PerfIVFPQAdd.cpp
deleted file mode 100644
index 9842a5273fb355f66958c9692c48c3b7dc47bc50..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/perf/PerfIVFPQAdd.cpp
+++ /dev/null
@@ -1,160 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <cuda_profiler_api.h>
-#include <faiss/IndexFlat.h>
-#include <faiss/IndexIVFPQ.h>
-#include <faiss/gpu/GpuIndexIVFPQ.h>
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/Timer.h>
-#include <gflags/gflags.h>
-#include <map>
-#include <vector>
-
-DEFINE_int32(batches, 10, "number of batches of vectors to add");
-DEFINE_int32(batch_size, 10000, "number of vectors in each batch");
-DEFINE_int32(dim, 256, "dimension of vectors");
-DEFINE_int32(centroids, 4096, "num coarse centroids to use");
-DEFINE_int32(bytes_per_vec, 32, "bytes per encoded vector");
-DEFINE_int32(bits_per_code, 8, "bits per PQ code");
-DEFINE_int32(index, 2, "0 = no indices on GPU; 1 = 32 bit, 2 = 64 bit on GPU");
-DEFINE_bool(time_gpu, true, "time add to GPU");
-DEFINE_bool(time_cpu, false, "time add to CPU");
-DEFINE_bool(per_batch_time, false, "print per-batch times");
-DEFINE_bool(reserve_memory, false, "whether or not to pre-reserve memory");
-
-int main(int argc, char** argv) {
-    gflags::ParseCommandLineFlags(&argc, &argv, true);
-
-    cudaProfilerStop();
-
-    int dim = FLAGS_dim;
-    int numCentroids = FLAGS_centroids;
-    int bytesPerVec = FLAGS_bytes_per_vec;
-    int bitsPerCode = FLAGS_bits_per_code;
-
-    faiss::gpu::StandardGpuResources res;
-
-    // IndexIVFPQ will complain, but just give us enough to get through this
-    int numTrain = 4 * numCentroids;
-    std::vector<float> trainVecs = faiss::gpu::randVecs(numTrain, dim);
-
-    faiss::IndexFlatL2 coarseQuantizer(dim);
-    faiss::IndexIVFPQ cpuIndex(
-            &coarseQuantizer, dim, numCentroids, bytesPerVec, bitsPerCode);
-    if (FLAGS_time_cpu) {
-        cpuIndex.train(numTrain, trainVecs.data());
-    }
-
-    faiss::gpu::GpuIndexIVFPQConfig config;
-    config.device = 0;
-    config.indicesOptions = (faiss::gpu::IndicesOptions)FLAGS_index;
-
-    faiss::gpu::GpuIndexIVFPQ gpuIndex(
-            &res,
-            dim,
-            numCentroids,
-            bytesPerVec,
-            bitsPerCode,
-            faiss::METRIC_L2,
-            config);
-
-    if (FLAGS_time_gpu) {
-        gpuIndex.train(numTrain, trainVecs.data());
-        if (FLAGS_reserve_memory) {
-            size_t numVecs = (size_t)FLAGS_batches * (size_t)FLAGS_batch_size;
-            gpuIndex.reserveMemory(numVecs);
-        }
-    }
-
-    cudaDeviceSynchronize();
-    CUDA_VERIFY(cudaProfilerStart());
-
-    float totalGpuTime = 0.0f;
-    float totalCpuTime = 0.0f;
-
-    for (int i = 0; i < FLAGS_batches; ++i) {
-        if (!FLAGS_per_batch_time) {
-            if (i % 10 == 0) {
-                printf("Adding batch %d\n", i + 1);
-            }
-        }
-
-        auto addVecs = faiss::gpu::randVecs(FLAGS_batch_size, dim);
-
-        if (FLAGS_time_gpu) {
-            faiss::gpu::CpuTimer timer;
-            gpuIndex.add(FLAGS_batch_size, addVecs.data());
-            CUDA_VERIFY(cudaDeviceSynchronize());
-            auto time = timer.elapsedMilliseconds();
-
-            totalGpuTime += time;
-
-            if (FLAGS_per_batch_time) {
-                printf("Batch %d | GPU time to add %d vecs: %.3f ms (%.5f ms per)\n",
-                       i + 1,
-                       FLAGS_batch_size,
-                       time,
-                       time / (float)FLAGS_batch_size);
-            }
-        }
-
-        if (FLAGS_time_cpu) {
-            faiss::gpu::CpuTimer timer;
-            cpuIndex.add(FLAGS_batch_size, addVecs.data());
-            auto time = timer.elapsedMilliseconds();
-
-            totalCpuTime += time;
-
-            if (FLAGS_per_batch_time) {
-                printf("Batch %d | CPU time to add %d vecs: %.3f ms (%.5f ms per)\n",
-                       i + 1,
-                       FLAGS_batch_size,
-                       time,
-                       time / (float)FLAGS_batch_size);
-            }
-        }
-    }
-
-    CUDA_VERIFY(cudaProfilerStop());
-
-    int total = FLAGS_batch_size * FLAGS_batches;
-
-    if (FLAGS_time_gpu) {
-        printf("%d dim, %d centroids, %d x %d encoding\n"
-               "GPU time to add %d vectors (%d batches, %d per batch): "
-               "%.3f ms (%.3f us per)\n",
-               dim,
-               numCentroids,
-               bytesPerVec,
-               bitsPerCode,
-               total,
-               FLAGS_batches,
-               FLAGS_batch_size,
-               totalGpuTime,
-               totalGpuTime * 1000.0f / (float)total);
-    }
-
-    if (FLAGS_time_cpu) {
-        printf("%d dim, %d centroids, %d x %d encoding\n"
-               "CPU time to add %d vectors (%d batches, %d per batch): "
-               "%.3f ms (%.3f us per)\n",
-               dim,
-               numCentroids,
-               bytesPerVec,
-               bitsPerCode,
-               total,
-               FLAGS_batches,
-               FLAGS_batch_size,
-               totalCpuTime,
-               totalCpuTime * 1000.0f / (float)total);
-    }
-
-    return 0;
-}
diff --git a/faiss/gpu_cuda/perf/PerfSelect.cu b/faiss/gpu_cuda/perf/PerfSelect.cu
deleted file mode 100644
index 671f840f879192efbf62d364b4ddb50864a08348..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/perf/PerfSelect.cu
+++ /dev/null
@@ -1,82 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <gflags/gflags.h>
-#include <gtest/gtest.h>
-#include <algorithm>
-#include <faiss/gpu/utils/BlockSelectKernel.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-#include <faiss/gpu/utils/WarpSelectKernel.cuh>
-#include <sstream>
-#include <unordered_map>
-#include <vector>
-
-DEFINE_int32(rows, 10000, "rows in matrix");
-DEFINE_int32(cols, 40000, "cols in matrix");
-DEFINE_int32(k, 100, "k");
-DEFINE_bool(dir, false, "direction of sort");
-DEFINE_bool(warp, false, "warp select");
-DEFINE_int32(iter, 5, "iterations to run");
-DEFINE_bool(k_powers, false, "test k powers of 2 from 1 -> max k");
-
-int main(int argc, char** argv) {
-    using namespace faiss::gpu;
-
-    gflags::ParseCommandLineFlags(&argc, &argv, true);
-
-    std::vector<float> v = randVecs(FLAGS_rows, FLAGS_cols);
-    HostTensor<float, 2, true> hostVal({FLAGS_rows, FLAGS_cols});
-
-    for (int r = 0; r < FLAGS_rows; ++r) {
-        for (int c = 0; c < FLAGS_cols; ++c) {
-            hostVal[r][c] = v[r * FLAGS_cols + c];
-        }
-    }
-
-    StandardGpuResources res;
-    res.noTempMemory();
-
-    auto resUse = res.getResources();
-
-    // Select top-k on GPU
-    DeviceTensor<float, 2, true> gpuVal(
-            resUse.get(), makeDevAlloc(AllocType::Other, 0), hostVal);
-
-    int startK = FLAGS_k;
-    int limitK = FLAGS_k;
-
-    if (FLAGS_k_powers) {
-        startK = 1;
-        limitK = GPU_MAX_SELECTION_K;
-    }
-
-    for (int k = startK; k <= limitK; k *= 2) {
-        DeviceTensor<float, 2, true> gpuOutVal(
-                resUse.get(),
-                makeDevAlloc(AllocType::Other, 0),
-                {FLAGS_rows, k});
-        DeviceTensor<int, 2, true> gpuOutInd(
-                resUse.get(),
-                makeDevAlloc(AllocType::Other, 0),
-                {FLAGS_rows, k});
-
-        for (int i = 0; i < FLAGS_iter; ++i) {
-            if (FLAGS_warp) {
-                runWarpSelect(gpuVal, gpuOutVal, gpuOutInd, FLAGS_dir, k, 0);
-            } else {
-                runBlockSelect(gpuVal, gpuOutVal, gpuOutInd, FLAGS_dir, k, 0);
-            }
-        }
-    }
-
-    cudaDeviceSynchronize();
-}
diff --git a/faiss/gpu_cuda/perf/WriteIndex.cpp b/faiss/gpu_cuda/perf/WriteIndex.cpp
deleted file mode 100644
index 7dab8fa743834fa28b51ff1518936535dd74e518..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/perf/WriteIndex.cpp
+++ /dev/null
@@ -1,113 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexFlat.h>
-#include <faiss/IndexIVFFlat.h>
-#include <faiss/IndexIVFPQ.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/index_io.h>
-#include <gflags/gflags.h>
-#include <vector>
-
-// For IVFPQ:
-DEFINE_bool(ivfpq, false, "use IVFPQ encoding");
-DEFINE_int32(codes, 4, "number of PQ codes per vector");
-DEFINE_int32(bits_per_code, 8, "number of bits per PQ code");
-
-// For IVFFlat:
-DEFINE_bool(l2, true, "use L2 metric (versus IP metric)");
-DEFINE_bool(ivfflat, false, "use IVF flat encoding");
-
-// For both:
-DEFINE_string(out, "/home/jhj/local/index.out", "index file for output");
-DEFINE_int32(dim, 128, "vector dimension");
-DEFINE_int32(num_coarse, 100, "number of coarse centroids");
-DEFINE_int32(num, 100000, "total database size");
-DEFINE_int32(num_train, -1, "number of database vecs to train on");
-
-template <typename T>
-void fillAndSave(T& index, int numTrain, int num, int dim) {
-    auto trainVecs = faiss::gpu::randVecs(numTrain, dim);
-    index.train(numTrain, trainVecs.data());
-
-    constexpr int kAddChunk = 1000000;
-
-    for (int i = 0; i < num; i += kAddChunk) {
-        int numRemaining = (num - i) < kAddChunk ? (num - i) : kAddChunk;
-        auto vecs = faiss::gpu::randVecs(numRemaining, dim);
-
-        printf("adding at %d: %d\n", i, numRemaining);
-        index.add(numRemaining, vecs.data());
-    }
-
-    faiss::write_index(&index, FLAGS_out.c_str());
-}
-
-int main(int argc, char** argv) {
-    gflags::ParseCommandLineFlags(&argc, &argv, true);
-
-    // Either ivfpq or ivfflat must be set
-    if ((FLAGS_ivfpq && FLAGS_ivfflat) || (!FLAGS_ivfpq && !FLAGS_ivfflat)) {
-        printf("must specify either ivfpq or ivfflat\n");
-        return 1;
-    }
-
-    auto dim = FLAGS_dim;
-    auto numCentroids = FLAGS_num_coarse;
-    auto num = FLAGS_num;
-    auto numTrain = FLAGS_num_train;
-    numTrain = numTrain == -1 ? std::max((num / 4), 1) : numTrain;
-    numTrain = std::min(num, numTrain);
-
-    if (FLAGS_ivfpq) {
-        faiss::IndexFlatL2 quantizer(dim);
-        faiss::IndexIVFPQ index(
-                &quantizer,
-                dim,
-                numCentroids,
-                FLAGS_codes,
-                FLAGS_bits_per_code);
-        index.verbose = true;
-
-        printf("IVFPQ: codes %d bits per code %d\n",
-               FLAGS_codes,
-               FLAGS_bits_per_code);
-        printf("Lists: %d\n", numCentroids);
-        printf("Database: dim %d num vecs %d trained on %d\n",
-               dim,
-               num,
-               numTrain);
-        printf("output file: %s\n", FLAGS_out.c_str());
-
-        fillAndSave(index, numTrain, num, dim);
-    } else if (FLAGS_ivfflat) {
-        faiss::IndexFlatL2 quantizerL2(dim);
-        faiss::IndexFlatIP quantizerIP(dim);
-
-        faiss::IndexFlat* quantizer = FLAGS_l2
-                ? (faiss::IndexFlat*)&quantizerL2
-                : (faiss::IndexFlat*)&quantizerIP;
-
-        faiss::IndexIVFFlat index(
-                quantizer,
-                dim,
-                numCentroids,
-                FLAGS_l2 ? faiss::METRIC_L2 : faiss::METRIC_INNER_PRODUCT);
-
-        printf("IVFFlat: metric %s\n", FLAGS_l2 ? "L2" : "IP");
-        printf("Lists: %d\n", numCentroids);
-        printf("Database: dim %d num vecs %d trained on %d\n",
-               dim,
-               num,
-               numTrain);
-        printf("output file: %s\n", FLAGS_out.c_str());
-
-        fillAndSave(index, numTrain, num, dim);
-    }
-
-    return 0;
-}
diff --git a/faiss/gpu_cuda/perf/slow.py b/faiss/gpu_cuda/perf/slow.py
deleted file mode 100755
index 4559bb4e35d3c9425eabf538974234371805bdbe..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/perf/slow.py
+++ /dev/null
@@ -1,25 +0,0 @@
-#! /usr/bin/env python3
-
-# Copyright (c) Facebook, Inc. and its affiliates.
-#
-# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree.
-
-# this is a slow computation to test whether ctrl-C handling works
-import faiss
-import numpy as np
-
-def test_slow():
-    d = 256
-    index = faiss.index_cpu_to_gpu(faiss.StandardGpuResources(),
-                               0, faiss.IndexFlatL2(d))
-    x = np.random.rand(10 ** 6, d).astype('float32')
-    print('add')
-    index.add(x)
-    print('search')
-    index.search(x, 10)
-    print('done')
-
-
-if __name__ == '__main__':
-    test_slow()
diff --git a/faiss/gpu_cuda/test/CMakeLists.txt b/faiss/gpu_cuda/test/CMakeLists.txt
deleted file mode 100644
index 4cb5024c3366a42ec41eccf72261d8f2485ccea7..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/CMakeLists.txt
+++ /dev/null
@@ -1,41 +0,0 @@
-# Copyright (c) Facebook, Inc. and its affiliates.
-# All rights reserved.
-#
-# This source code is licensed under the BSD-style license found in the
-# LICENSE file in the root directory of this source tree.
-
-# HC
-#find_package(CUDAToolkit REQUIRED)
-
-# Defines `gtest_discover_tests()`.
-include(GoogleTest)
-
-add_library(faiss_gpu_test_helper TestUtils.cpp)
-
-#target_link_libraries(faiss_gpu_test_helper PUBLIC faiss gtest CUDA::cudart)
-target_link_libraries(faiss_gpu_test_helper PUBLIC faiss gtest)
-
-macro(faiss_gpu_test file)
-  get_filename_component(test_name ${file} NAME_WE)
-  add_executable(${test_name} ${file})
-  target_link_libraries(${test_name} PRIVATE faiss_gpu_test_helper)
-  gtest_discover_tests(${test_name})
-endmacro()
-
-faiss_gpu_test(TestCodePacking.cpp)
-faiss_gpu_test(TestGpuIndexFlat.cpp)
-faiss_gpu_test(TestGpuIndexIVFFlat.cpp)
-faiss_gpu_test(TestGpuIndexBinaryFlat.cpp)
-faiss_gpu_test(TestGpuMemoryException.cpp)
-faiss_gpu_test(TestGpuIndexIVFPQ.cpp)
-faiss_gpu_test(TestGpuIndexIVFScalarQuantizer.cpp)
-faiss_gpu_test(TestGpuDistance.cu)
-faiss_gpu_test(TestGpuSelect.cu)
-
-add_executable(demo_ivfpq_indexing_gpu EXCLUDE_FROM_ALL
-  demo_ivfpq_indexing_gpu.cpp)
-
-#target_link_libraries(demo_ivfpq_indexing_gpu
-#  PRIVATE faiss gtest_main CUDA::cudart)
-target_link_libraries(demo_ivfpq_indexing_gpu
-  PRIVATE faiss gtest_main)
diff --git a/faiss/gpu_cuda/test/TestCodePacking.cpp b/faiss/gpu_cuda/test/TestCodePacking.cpp
deleted file mode 100644
index 44720aebe6390ab929844398ea037836916f6d84..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/TestCodePacking.cpp
+++ /dev/null
@@ -1,289 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/impl/InterleavedCodes.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <gtest/gtest.h>
-#include <cmath>
-#include <random>
-#include <sstream>
-#include <vector>
-
-TEST(TestCodePacking, NonInterleavedCodes_UnpackPack) {
-    using namespace faiss::gpu;
-
-    // We are fine using non-fixed seeds here, the results should be fully
-    // deterministic
-    auto seed = std::random_device()();
-    std::mt19937 gen(seed);
-    std::uniform_int_distribution<uint8_t> dist;
-
-    std::cout << "seed " << seed << "\n";
-
-    for (auto bitsPerCode : {4, 5, 6, 8, 16, 32}) {
-        for (auto dims : {1, 7, 8, 31, 32}) {
-            for (auto numVecs : {1, 3, 4, 5, 6, 8, 31, 32, 33, 65}) {
-                std::cout << bitsPerCode << " " << dims << " " << numVecs
-                          << "\n";
-
-                int srcVecSize = utils::divUp(dims * bitsPerCode, 8);
-                std::vector<uint8_t> data(numVecs * srcVecSize);
-
-                for (auto& v : data) {
-                    v = dist(gen);
-                }
-
-                // currently unimplemented
-                EXPECT_FALSE(bitsPerCode > 8 && bitsPerCode % 8 != 0);
-
-                // Due to bit packing, mask out bits that should be zero based
-                // on dimensions we shouldn't have present
-                int vectorSizeBits = dims * bitsPerCode;
-                int vectorSizeBytes = utils::divUp(vectorSizeBits, 8);
-                int remainder = vectorSizeBits % 8;
-
-                if (remainder > 0) {
-                    uint8_t mask = 0xff >> (8 - remainder);
-
-                    for (int i = 0; i < numVecs; ++i) {
-                        int lastVecByte = (i + 1) * vectorSizeBytes - 1;
-                        data[lastVecByte] &= mask;
-                    }
-                }
-
-                auto up =
-                        unpackNonInterleaved(data, numVecs, dims, bitsPerCode);
-                auto p = packNonInterleaved(up, numVecs, dims, bitsPerCode);
-
-                EXPECT_EQ(data, p);
-            }
-        }
-    }
-}
-
-TEST(TestCodePacking, NonInterleavedCodes_PackUnpack) {
-    using namespace faiss::gpu;
-
-    // We are fine using non-fixed seeds here, the results should be fully
-    // deterministic
-    std::random_device rd;
-    std::mt19937 gen(rd());
-    std::uniform_int_distribution<uint8_t> dist;
-
-    for (auto bitsPerCode : {4, 5, 6, 8, 16, 32}) {
-        for (auto dims : {1, 7, 8, 31, 32}) {
-            for (auto numVecs : {1, 3, 4, 5, 6, 8, 31, 32, 33, 65}) {
-                std::cout << bitsPerCode << " " << dims << " " << numVecs
-                          << "\n";
-
-                std::vector<uint8_t> data(
-                        numVecs * dims * utils::divUp(bitsPerCode, 8));
-
-                // currently unimplemented
-                EXPECT_FALSE(bitsPerCode > 8 && bitsPerCode % 8 != 0);
-
-                // Mask out high bits we shouldn't have based on code size
-                uint8_t mask =
-                        bitsPerCode < 8 ? (0xff >> (8 - bitsPerCode)) : 0xff;
-
-                for (auto& v : data) {
-                    v = dist(gen) & mask;
-                }
-
-                auto p = packNonInterleaved(data, numVecs, dims, bitsPerCode);
-                auto up = unpackNonInterleaved(p, numVecs, dims, bitsPerCode);
-
-                EXPECT_EQ(data, up);
-            }
-        }
-    }
-}
-
-TEST(TestCodePacking, InterleavedCodes_UnpackPack) {
-    using namespace faiss::gpu;
-
-    // We are fine using non-fixed seeds here, the results should be fully
-    // deterministic
-    std::random_device rd;
-    std::mt19937 gen(rd());
-    std::uniform_int_distribution<uint8_t> dist;
-
-    for (auto bitsPerCode : {4, 5, 6, 8, 16, 32}) {
-        for (auto dims : {1, 7, 8, 31, 32}) {
-            for (auto numVecs : {1, 3, 4, 5, 6, 8, 31, 32, 33, 65}) {
-                std::cout << bitsPerCode << " " << dims << " " << numVecs
-                          << "\n";
-
-                int blocks = utils::divUp(numVecs, 32);
-                int bytesPerDimBlock = 32 * bitsPerCode / 8;
-                int bytesPerBlock = bytesPerDimBlock * dims;
-                int size = blocks * bytesPerBlock;
-
-                std::vector<uint8_t> data(size);
-
-                if (bitsPerCode == 8 || bitsPerCode == 16 ||
-                    bitsPerCode == 32) {
-                    int bytesPerCode = bitsPerCode / 8;
-
-                    for (int i = 0; i < blocks; ++i) {
-                        for (int j = 0; j < dims; ++j) {
-                            for (int k = 0; k < 32; ++k) {
-                                for (int l = 0; l < bytesPerCode; ++l) {
-                                    int vec = i * 32 + k;
-                                    if (vec < numVecs) {
-                                        data[i * bytesPerBlock +
-                                             j * bytesPerDimBlock +
-                                             k * bytesPerCode + l] = dist(gen);
-                                    }
-                                }
-                            }
-                        }
-                    }
-                } else if (bitsPerCode < 8) {
-                    for (int i = 0; i < blocks; ++i) {
-                        for (int j = 0; j < dims; ++j) {
-                            for (int k = 0; k < bytesPerDimBlock; ++k) {
-                                int loVec = i * 32 + (k * 8) / bitsPerCode;
-                                int hiVec = loVec + 1;
-                                int hiVec2 = hiVec + 1;
-
-                                uint8_t lo = loVec < numVecs ? dist(gen) &
-                                                (0xff >> (8 - bitsPerCode))
-                                                             : 0;
-                                uint8_t hi = hiVec < numVecs ? dist(gen) &
-                                                (0xff >> (8 - bitsPerCode))
-                                                             : 0;
-                                uint8_t hi2 = hiVec2 < numVecs ? dist(gen) &
-                                                (0xff >> (8 - bitsPerCode))
-                                                               : 0;
-
-                                uint8_t v = 0;
-                                if (bitsPerCode == 4) {
-                                    v = lo | (hi << 4);
-                                } else if (bitsPerCode == 5) {
-                                    switch (k % 5) {
-                                        case 0:
-                                            // 5 msbs of lower as vOut lsbs
-                                            // 3 lsbs of upper as vOut msbs
-                                            v = (lo & 0x1f) | (hi << 5);
-                                            break;
-                                        case 1:
-                                            // 2 msbs of lower as vOut lsbs
-                                            // 5 lsbs of upper as vOut msbs
-                                            // 1 lsbs of upper2 as vOut msb
-                                            v = (lo >> 3) | (hi << 2) |
-                                                    (hi2 << 7);
-                                            break;
-                                        case 2:
-                                            // 4 msbs of lower as vOut lsbs
-                                            // 4 lsbs of upper as vOut msbs
-                                            v = (lo >> 1) | (hi << 4);
-                                            break;
-                                        case 3:
-                                            // 1 msbs of lower as vOut lsbs
-                                            // 5 lsbs of upper as vOut msbs
-                                            // 2 lsbs of upper2 as vOut msb
-                                            v = (lo >> 4) | (hi << 1) |
-                                                    (hi2 << 6);
-                                            break;
-                                        case 4:
-                                            // 3 msbs of lower as vOut lsbs
-                                            // 5 lsbs of upper as vOut msbs
-                                            v = (lo >> 2) | (hi << 3);
-                                            break;
-                                    }
-                                } else if (bitsPerCode == 6) {
-                                    switch (k % 3) {
-                                        case 0:
-                                            // 6 msbs of lower as vOut lsbs
-                                            // 2 lsbs of upper as vOut msbs
-                                            v = (lo & 0x3f) | (hi << 6);
-                                            break;
-                                        case 1:
-                                            // 4 msbs of lower as vOut lsbs
-                                            // 4 lsbs of upper as vOut msbs
-                                            v = (lo >> 2) | (hi << 4);
-                                            break;
-                                        case 2:
-                                            // 2 msbs of lower as vOut lsbs
-                                            // 6 lsbs of upper as vOut msbs
-                                            v = (lo >> 4) | (hi << 2);
-                                            break;
-                                    }
-                                } else {
-                                    // unimplemented
-                                    EXPECT_TRUE(false);
-                                }
-
-                                data[i * bytesPerBlock + j * bytesPerDimBlock +
-                                     k] = v;
-                            }
-                        }
-                    }
-                } else {
-                    // unimplemented
-                    EXPECT_TRUE(false);
-                }
-
-                auto up = unpackInterleaved(data, numVecs, dims, bitsPerCode);
-                auto p = packInterleaved(up, numVecs, dims, bitsPerCode);
-
-                EXPECT_EQ(data, p);
-            }
-        }
-    }
-}
-
-TEST(TestCodePacking, InterleavedCodes_PackUnpack) {
-    using namespace faiss::gpu;
-
-    // We are fine using non-fixed seeds here, the results should be fully
-    // deterministic
-    std::random_device rd;
-    std::mt19937 gen(rd());
-    std::uniform_int_distribution<uint8_t> dist;
-
-    for (auto bitsPerCode : {4, 5, 6, 8, 16, 32}) {
-        for (auto dims : {1, 7, 8, 31, 32}) {
-            for (auto numVecs : {1, 3, 4, 5, 6, 8, 31, 32, 33, 65}) {
-                std::cout << bitsPerCode << " " << dims << " " << numVecs
-                          << "\n";
-
-                std::vector<uint8_t> data(
-                        numVecs * dims * utils::divUp(bitsPerCode, 8));
-
-                if (bitsPerCode == 8 || bitsPerCode == 16 ||
-                    bitsPerCode == 32) {
-                    for (auto& v : data) {
-                        v = dist(gen);
-                    }
-                } else if (bitsPerCode < 8) {
-                    uint8_t mask = 0xff >> (8 - bitsPerCode);
-
-                    for (auto& v : data) {
-                        v = dist(gen) & mask;
-                    }
-                } else {
-                    // unimplemented
-                    EXPECT_TRUE(false);
-                }
-
-                auto p = packInterleaved(data, numVecs, dims, bitsPerCode);
-                auto up = unpackInterleaved(p, numVecs, dims, bitsPerCode);
-
-                EXPECT_EQ(data, up);
-            }
-        }
-    }
-}
-
-int main(int argc, char** argv) {
-    testing::InitGoogleTest(&argc, argv);
-
-    return RUN_ALL_TESTS();
-}
diff --git a/faiss/gpu_cuda/test/TestGpuDistance.cu b/faiss/gpu_cuda/test/TestGpuDistance.cu
deleted file mode 100644
index 1d97e6ca1d868dfed821dd312f8e79f45768b58b..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/TestGpuDistance.cu
+++ /dev/null
@@ -1,201 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexFlat.h>
-#include <faiss/gpu/GpuDistance.h>
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <gtest/gtest.h>
-#include <faiss/gpu/utils/CopyUtils.cuh>
-#include <faiss/gpu/utils/Transpose.cuh>
-#include <sstream>
-#include <vector>
-
-void testTransposition(
-        bool colMajorVecs,
-        bool colMajorQueries,
-        faiss::MetricType metric,
-        float metricArg = 0) {
-    using namespace faiss::gpu;
-
-    int device = randVal(0, getNumDevices() - 1);
-
-    StandardGpuResources res;
-    res.noTempMemory();
-
-    int dim = randVal(20, 150);
-    int numVecs = randVal(10, 30000);
-    int numQuery = randVal(1, 1024);
-    int k = std::min(numVecs, randVal(20, 70));
-
-    // Input data for CPU
-    std::vector<float> vecs = randVecs(numVecs, dim);
-    std::vector<float> queries = randVecs(numQuery, dim);
-
-    if (metric == faiss::MetricType::METRIC_JensenShannon) {
-        // make values positive
-        for (auto& v : vecs) {
-            v = std::abs(v);
-            if (v == 0) {
-                v = 1e-6;
-            }
-        }
-
-        for (auto& q : queries) {
-            q = std::abs(q);
-            if (q == 0) {
-                q = 1e-6;
-            }
-        }
-    }
-
-    // The CPU index is our reference for the results
-    faiss::IndexFlat cpuIndex(dim, metric);
-    cpuIndex.metric_arg = metricArg;
-    cpuIndex.add(numVecs, vecs.data());
-
-    std::vector<float> cpuDistance(numQuery * k, 0);
-    std::vector<faiss::Index::idx_t> cpuIndices(numQuery * k, -1);
-
-    cpuIndex.search(
-            numQuery, queries.data(), k, cpuDistance.data(), cpuIndices.data());
-
-    // The transpose and distance code assumes the desired device is already set
-    DeviceScope scope(device);
-    auto stream = res.getDefaultStream(device);
-
-    // Copy input data to GPU, and pre-transpose both vectors and queries for
-    // passing
-    auto gpuVecs = toDeviceNonTemporary<float, 2>(
-            res.getResources().get(),
-            device,
-            vecs.data(),
-            stream,
-            {numVecs, dim});
-    auto gpuQueries = toDeviceNonTemporary<float, 2>(
-            res.getResources().get(),
-            device,
-            queries.data(),
-            stream,
-            {numQuery, dim});
-
-    DeviceTensor<float, 2, true> vecsT(
-            res.getResources().get(),
-            makeDevAlloc(AllocType::Other, stream),
-            {dim, numVecs});
-    runTransposeAny(gpuVecs, 0, 1, vecsT, stream);
-
-    DeviceTensor<float, 2, true> queriesT(
-            res.getResources().get(),
-            makeDevAlloc(AllocType::Other, stream),
-            {dim, numQuery});
-    runTransposeAny(gpuQueries, 0, 1, queriesT, stream);
-
-    std::vector<float> gpuDistance(numQuery * k, 0);
-    std::vector<faiss::Index::idx_t> gpuIndices(numQuery * k, -1);
-
-    GpuDistanceParams args;
-    args.metric = metric;
-    args.metricArg = metricArg;
-    args.k = k;
-    args.dims = dim;
-    args.vectors = colMajorVecs ? vecsT.data() : gpuVecs.data();
-    args.vectorsRowMajor = !colMajorVecs;
-    args.numVectors = numVecs;
-    args.queries = colMajorQueries ? queriesT.data() : gpuQueries.data();
-    args.queriesRowMajor = !colMajorQueries;
-    args.numQueries = numQuery;
-    args.outDistances = gpuDistance.data();
-    args.outIndices = gpuIndices.data();
-
-    bfKnn(&res, args);
-
-    std::stringstream str;
-    str << "metric " << metric << " colMajorVecs " << colMajorVecs
-        << " colMajorQueries " << colMajorQueries;
-
-    compareLists(
-            cpuDistance.data(),
-            cpuIndices.data(),
-            gpuDistance.data(),
-            gpuIndices.data(),
-            numQuery,
-            k,
-            str.str(),
-            false,
-            false,
-            true,
-            6e-3f,
-            0.1f,
-            0.015f);
-}
-
-// Test different memory layouts for brute-force k-NN
-TEST(TestGpuDistance, Transposition_RR) {
-    testTransposition(false, false, faiss::MetricType::METRIC_L2);
-    testTransposition(false, false, faiss::MetricType::METRIC_INNER_PRODUCT);
-}
-
-TEST(TestGpuDistance, Transposition_RC) {
-    testTransposition(false, true, faiss::MetricType::METRIC_L2);
-}
-
-TEST(TestGpuDistance, Transposition_CR) {
-    testTransposition(true, false, faiss::MetricType::METRIC_L2);
-}
-
-TEST(TestGpuDistance, Transposition_CC) {
-    testTransposition(true, true, faiss::MetricType::METRIC_L2);
-}
-
-TEST(TestGpuDistance, L1) {
-    testTransposition(false, false, faiss::MetricType::METRIC_L1);
-}
-
-// Test other transpositions with the general distance kernel
-TEST(TestGpuDistance, L1_RC) {
-    testTransposition(false, true, faiss::MetricType::METRIC_L1);
-}
-
-TEST(TestGpuDistance, L1_CR) {
-    testTransposition(true, false, faiss::MetricType::METRIC_L1);
-}
-
-TEST(TestGpuDistance, L1_CC) {
-    testTransposition(true, true, faiss::MetricType::METRIC_L1);
-}
-
-// Test remainder of metric types
-TEST(TestGpuDistance, Linf) {
-    testTransposition(false, false, faiss::MetricType::METRIC_Linf);
-}
-
-TEST(TestGpuDistance, Lp) {
-    testTransposition(false, false, faiss::MetricType::METRIC_Lp, 3);
-}
-
-TEST(TestGpuDistance, Canberra) {
-    testTransposition(false, false, faiss::MetricType::METRIC_Canberra);
-}
-
-TEST(TestGpuDistance, BrayCurtis) {
-    testTransposition(false, false, faiss::MetricType::METRIC_BrayCurtis);
-}
-
-TEST(TestGpuDistance, JensenShannon) {
-    testTransposition(false, false, faiss::MetricType::METRIC_JensenShannon);
-}
-
-int main(int argc, char** argv) {
-    testing::InitGoogleTest(&argc, argv);
-
-    // just run with a fixed test seed
-    faiss::gpu::setTestSeed(100);
-
-    return RUN_ALL_TESTS();
-}
diff --git a/faiss/gpu_cuda/test/TestGpuIndexBinaryFlat.cpp b/faiss/gpu_cuda/test/TestGpuIndexBinaryFlat.cpp
deleted file mode 100644
index 6c44b911fbdbc1f8af7f34f503d7a88e9948a8ed..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/TestGpuIndexBinaryFlat.cpp
+++ /dev/null
@@ -1,124 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexBinaryFlat.h>
-#include <faiss/gpu/GpuIndexBinaryFlat.h>
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/utils/utils.h>
-#include <gtest/gtest.h>
-#include <sstream>
-#include <vector>
-
-void compareBinaryDist(
-        const std::vector<int>& cpuDist,
-        const std::vector<faiss::IndexBinary::idx_t>& cpuLabels,
-        const std::vector<int>& gpuDist,
-        const std::vector<faiss::IndexBinary::idx_t>& gpuLabels,
-        int numQuery,
-        int k) {
-    for (int i = 0; i < numQuery; ++i) {
-        // The index order can be permuted within a group that has the same
-        // distance, since this is based on the order in which the algorithm
-        // encounters the values. The last set of equivalent distances seen in
-        // the min-k might be truncated, so we can't check that set, but all
-        // others we can check.
-        std::set<faiss::IndexBinary::idx_t> cpuLabelSet;
-        std::set<faiss::IndexBinary::idx_t> gpuLabelSet;
-
-        int curDist = -1;
-
-        for (int j = 0; j < k; ++j) {
-            int idx = i * k + j;
-
-            if (curDist == -1) {
-                curDist = cpuDist[idx];
-            }
-
-            if (curDist != cpuDist[idx]) {
-                // Distances must be monotonically increasing
-                EXPECT_LT(curDist, cpuDist[idx]);
-
-                // This is a new set of distances
-                EXPECT_EQ(cpuLabelSet, gpuLabelSet);
-                curDist = cpuDist[idx];
-                cpuLabelSet.clear();
-                gpuLabelSet.clear();
-            }
-
-            cpuLabelSet.insert(cpuLabels[idx]);
-            gpuLabelSet.insert(gpuLabels[idx]);
-
-            // Because the distances are reproducible, they must be exactly the
-            // same
-            EXPECT_EQ(cpuDist[idx], gpuDist[idx]);
-        }
-    }
-}
-
-template <int DimMultiple>
-void testGpuIndexBinaryFlat(int kOverride = -1) {
-    faiss::gpu::StandardGpuResources res;
-    res.noTempMemory();
-
-    faiss::gpu::GpuIndexBinaryFlatConfig config;
-    config.device = faiss::gpu::randVal(0, faiss::gpu::getNumDevices() - 1);
-
-    // multiples of 8 and multiples of 32 use different implementations
-    int dims = faiss::gpu::randVal(1, 20) * DimMultiple;
-    faiss::gpu::GpuIndexBinaryFlat gpuIndex(&res, dims, config);
-
-    faiss::IndexBinaryFlat cpuIndex(dims);
-
-    int k = kOverride > 0
-            ? kOverride
-            : faiss::gpu::randVal(1, faiss::gpu::getMaxKSelection());
-    int numVecs = faiss::gpu::randVal(k + 1, 20000);
-    int numQuery = faiss::gpu::randVal(1, 1000);
-
-    auto data = faiss::gpu::randBinaryVecs(numVecs, dims);
-    gpuIndex.add(numVecs, data.data());
-    cpuIndex.add(numVecs, data.data());
-
-    auto query = faiss::gpu::randBinaryVecs(numQuery, dims);
-
-    std::vector<int> cpuDist(numQuery * k);
-    std::vector<faiss::IndexBinary::idx_t> cpuLabels(numQuery * k);
-
-    cpuIndex.search(
-            numQuery, query.data(), k, cpuDist.data(), cpuLabels.data());
-
-    std::vector<int> gpuDist(numQuery * k);
-    std::vector<faiss::IndexBinary::idx_t> gpuLabels(numQuery * k);
-
-    gpuIndex.search(
-            numQuery, query.data(), k, gpuDist.data(), gpuLabels.data());
-
-    compareBinaryDist(cpuDist, cpuLabels, gpuDist, gpuLabels, numQuery, k);
-}
-
-TEST(TestGpuIndexBinaryFlat, Test8) {
-    for (int tries = 0; tries < 4; ++tries) {
-        testGpuIndexBinaryFlat<8>();
-    }
-}
-
-TEST(TestGpuIndexBinaryFlat, Test32) {
-    for (int tries = 0; tries < 4; ++tries) {
-        testGpuIndexBinaryFlat<32>();
-    }
-}
-
-int main(int argc, char** argv) {
-    testing::InitGoogleTest(&argc, argv);
-
-    // just run with a fixed test seed
-    faiss::gpu::setTestSeed(100);
-
-    return RUN_ALL_TESTS();
-}
diff --git a/faiss/gpu_cuda/test/TestGpuIndexFlat.cpp b/faiss/gpu_cuda/test/TestGpuIndexFlat.cpp
deleted file mode 100644
index 5c3c4858f4a580eb4c94b48b632a8c43a3865656..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/TestGpuIndexFlat.cpp
+++ /dev/null
@@ -1,400 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexFlat.h>
-#include <faiss/gpu/GpuIndexFlat.h>
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <gtest/gtest.h>
-#include <sstream>
-#include <vector>
-
-// FIXME: figure out a better way to test fp16
-constexpr float kF16MaxRelErr = 0.07f;
-constexpr float kF32MaxRelErr = 6e-3f;
-
-struct TestFlatOptions {
-    TestFlatOptions()
-            : metric(faiss::MetricType::METRIC_L2),
-              metricArg(0),
-              useFloat16(false),
-              useTransposed(false),
-              numVecsOverride(-1),
-              numQueriesOverride(-1),
-              kOverride(-1),
-              dimOverride(-1) {}
-
-    faiss::MetricType metric;
-    float metricArg;
-
-    bool useFloat16;
-    bool useTransposed;
-    int numVecsOverride;
-    int numQueriesOverride;
-    int kOverride;
-    int dimOverride;
-};
-
-void testFlat(const TestFlatOptions& opt) {
-    int numVecs = opt.numVecsOverride > 0 ? opt.numVecsOverride
-                                          : faiss::gpu::randVal(1000, 5000);
-    int dim = opt.dimOverride > 0 ? opt.dimOverride
-                                  : faiss::gpu::randVal(50, 800);
-    int numQuery = opt.numQueriesOverride > 0 ? opt.numQueriesOverride
-                                              : faiss::gpu::randVal(1, 512);
-
-    // Due to loss of precision in a float16 accumulator, for large k,
-    // the number of differences is pretty huge. Restrict ourselves to a
-    // fairly small `k` for float16
-    int k = opt.useFloat16
-            ? std::min(faiss::gpu::randVal(1, 50), numVecs)
-            : std::min(
-                      faiss::gpu::randVal(1, faiss::gpu::getMaxKSelection()),
-                      numVecs);
-    if (opt.kOverride > 0) {
-        k = opt.kOverride;
-    }
-
-    faiss::IndexFlat cpuIndex(dim, opt.metric);
-    cpuIndex.metric_arg = opt.metricArg;
-
-    // Construct on a random device to test multi-device, if we have
-    // multiple devices
-    int device = faiss::gpu::randVal(0, faiss::gpu::getNumDevices() - 1);
-
-    faiss::gpu::StandardGpuResources res;
-    res.noTempMemory();
-
-    faiss::gpu::GpuIndexFlatConfig config;
-    config.device = device;
-    config.useFloat16 = opt.useFloat16;
-    config.storeTransposed = opt.useTransposed;
-
-    faiss::gpu::GpuIndexFlat gpuIndex(&res, dim, opt.metric, config);
-    gpuIndex.metric_arg = opt.metricArg;
-
-    std::vector<float> vecs = faiss::gpu::randVecs(numVecs, dim);
-    cpuIndex.add(numVecs, vecs.data());
-    gpuIndex.add(numVecs, vecs.data());
-
-    std::stringstream str;
-    str << "metric " << opt.metric << " marg " << opt.metricArg << " numVecs "
-        << numVecs << " dim " << dim << " useFloat16 " << opt.useFloat16
-        << " transposed " << opt.useTransposed << " numQuery " << numQuery
-        << " k " << k;
-
-    // To some extent, we depend upon the relative error for the test
-    // for float16
-    faiss::gpu::compareIndices(
-            cpuIndex,
-            gpuIndex,
-            numQuery,
-            dim,
-            k,
-            str.str(),
-            opt.useFloat16 ? kF16MaxRelErr : kF32MaxRelErr,
-            // FIXME: the fp16 bounds are
-            // useless when math (the accumulator) is
-            // in fp16. Figure out another way to test
-            opt.useFloat16 ? 0.99f : 0.1f,
-            opt.useFloat16 ? 0.65f : 0.015f);
-}
-
-TEST(TestGpuIndexFlat, IP_Float32) {
-    for (int tries = 0; tries < 3; ++tries) {
-        TestFlatOptions opt;
-        opt.metric = faiss::MetricType::METRIC_INNER_PRODUCT;
-        opt.useFloat16 = false;
-        opt.useTransposed = false;
-
-        testFlat(opt);
-
-        opt.useTransposed = true;
-        testFlat(opt);
-    }
-}
-
-TEST(TestGpuIndexFlat, L1_Float32) {
-    TestFlatOptions opt;
-    opt.metric = faiss::MetricType::METRIC_L1;
-    opt.useFloat16 = false;
-    opt.useTransposed = false;
-
-    testFlat(opt);
-
-    opt.useTransposed = true;
-    testFlat(opt);
-}
-
-TEST(TestGpuIndexFlat, Lp_Float32) {
-    TestFlatOptions opt;
-    opt.metric = faiss::MetricType::METRIC_Lp;
-    opt.metricArg = 5;
-    opt.useFloat16 = false;
-    opt.useTransposed = false;
-
-    testFlat(opt);
-
-    // Don't bother testing the transposed version, the L1 test should be good
-    // enough for that
-}
-
-TEST(TestGpuIndexFlat, L2_Float32) {
-    for (int tries = 0; tries < 3; ++tries) {
-        TestFlatOptions opt;
-        opt.metric = faiss::MetricType::METRIC_L2;
-
-        opt.useFloat16 = false;
-        opt.useTransposed = false;
-
-        testFlat(opt);
-
-        opt.useTransposed = true;
-        testFlat(opt);
-    }
-}
-
-// test specialized k == 1 codepath
-TEST(TestGpuIndexFlat, L2_Float32_K1) {
-    for (int tries = 0; tries < 3; ++tries) {
-        TestFlatOptions opt;
-        opt.metric = faiss::MetricType::METRIC_L2;
-        opt.useFloat16 = false;
-        opt.useTransposed = false;
-        opt.kOverride = 1;
-
-        testFlat(opt);
-    }
-}
-
-TEST(TestGpuIndexFlat, IP_Float16) {
-    for (int tries = 0; tries < 3; ++tries) {
-        TestFlatOptions opt;
-        opt.metric = faiss::MetricType::METRIC_INNER_PRODUCT;
-        opt.useFloat16 = true;
-        opt.useTransposed = false;
-
-        testFlat(opt);
-
-        opt.useTransposed = true;
-        testFlat(opt);
-    }
-}
-
-TEST(TestGpuIndexFlat, L2_Float16) {
-    for (int tries = 0; tries < 3; ++tries) {
-        TestFlatOptions opt;
-        opt.metric = faiss::MetricType::METRIC_L2;
-        opt.useFloat16 = true;
-        opt.useTransposed = false;
-
-        testFlat(opt);
-
-        opt.useTransposed = true;
-        testFlat(opt);
-    }
-}
-
-// test specialized k == 1 codepath
-TEST(TestGpuIndexFlat, L2_Float16_K1) {
-    for (int tries = 0; tries < 3; ++tries) {
-        TestFlatOptions opt;
-        opt.metric = faiss::MetricType::METRIC_L2;
-        opt.useFloat16 = true;
-        opt.useTransposed = false;
-        opt.kOverride = 1;
-
-        testFlat(opt);
-    }
-}
-
-// test tiling along a huge vector set
-TEST(TestGpuIndexFlat, L2_Tiling) {
-    for (int tries = 0; tries < 2; ++tries) {
-        TestFlatOptions opt;
-        opt.metric = faiss::MetricType::METRIC_L2;
-        opt.useFloat16 = false;
-        opt.useTransposed = false;
-        opt.numVecsOverride = 1000000;
-
-        // keep the rest of the problem reasonably small
-        opt.numQueriesOverride = 4;
-        opt.dimOverride = 64;
-        opt.kOverride = 64;
-
-        testFlat(opt);
-    }
-}
-
-TEST(TestGpuIndexFlat, QueryEmpty) {
-    faiss::gpu::StandardGpuResources res;
-    res.noTempMemory();
-
-    faiss::gpu::GpuIndexFlatConfig config;
-    config.device = 0;
-    config.useFloat16 = false;
-    config.storeTransposed = false;
-
-    int dim = 128;
-    faiss::gpu::GpuIndexFlatL2 gpuIndex(&res, dim, config);
-
-    // Querying an empty index should not blow up, and just return
-    // (FLT_MAX, -1)
-    int numQuery = 10;
-    int k = 50;
-    std::vector<float> queries(numQuery * dim, 1.0f);
-
-    std::vector<float> dist(numQuery * k, 0);
-    std::vector<faiss::Index::idx_t> ind(numQuery * k);
-
-    gpuIndex.search(numQuery, queries.data(), k, dist.data(), ind.data());
-
-    for (auto d : dist) {
-        EXPECT_EQ(d, std::numeric_limits<float>::max());
-    }
-
-    for (auto i : ind) {
-        EXPECT_EQ(i, -1);
-    }
-}
-
-TEST(TestGpuIndexFlat, CopyFrom) {
-    int numVecs = faiss::gpu::randVal(100, 200);
-    int dim = faiss::gpu::randVal(1, 1000);
-
-    faiss::IndexFlatL2 cpuIndex(dim);
-
-    std::vector<float> vecs = faiss::gpu::randVecs(numVecs, dim);
-    cpuIndex.add(numVecs, vecs.data());
-
-    faiss::gpu::StandardGpuResources res;
-    res.noTempMemory();
-
-    // Fill with garbage values
-    int device = faiss::gpu::randVal(0, faiss::gpu::getNumDevices() - 1);
-
-    faiss::gpu::GpuIndexFlatConfig config;
-    config.device = device;
-    config.useFloat16 = false;
-    config.storeTransposed = false;
-
-    faiss::gpu::GpuIndexFlatL2 gpuIndex(&res, 2000, config);
-    gpuIndex.copyFrom(&cpuIndex);
-
-    EXPECT_EQ(cpuIndex.ntotal, gpuIndex.ntotal);
-    EXPECT_EQ(gpuIndex.ntotal, numVecs);
-
-    EXPECT_EQ(cpuIndex.d, gpuIndex.d);
-    EXPECT_EQ(cpuIndex.d, dim);
-
-    int idx = faiss::gpu::randVal(0, numVecs - 1);
-
-    std::vector<float> gpuVals(dim);
-    gpuIndex.reconstruct(idx, gpuVals.data());
-
-    std::vector<float> cpuVals(dim);
-    cpuIndex.reconstruct(idx, cpuVals.data());
-
-    EXPECT_EQ(gpuVals, cpuVals);
-}
-
-TEST(TestGpuIndexFlat, CopyTo) {
-    faiss::gpu::StandardGpuResources res;
-    res.noTempMemory();
-
-    int numVecs = faiss::gpu::randVal(100, 200);
-    int dim = faiss::gpu::randVal(1, 1000);
-
-    int device = faiss::gpu::randVal(0, faiss::gpu::getNumDevices() - 1);
-
-    faiss::gpu::GpuIndexFlatConfig config;
-    config.device = device;
-    config.useFloat16 = false;
-    config.storeTransposed = false;
-
-    faiss::gpu::GpuIndexFlatL2 gpuIndex(&res, dim, config);
-
-    std::vector<float> vecs = faiss::gpu::randVecs(numVecs, dim);
-    gpuIndex.add(numVecs, vecs.data());
-
-    // Fill with garbage values
-    faiss::IndexFlatL2 cpuIndex(2000);
-    gpuIndex.copyTo(&cpuIndex);
-
-    EXPECT_EQ(cpuIndex.ntotal, gpuIndex.ntotal);
-    EXPECT_EQ(gpuIndex.ntotal, numVecs);
-
-    EXPECT_EQ(cpuIndex.d, gpuIndex.d);
-    EXPECT_EQ(cpuIndex.d, dim);
-
-    int idx = faiss::gpu::randVal(0, numVecs - 1);
-
-    std::vector<float> gpuVals(dim);
-    gpuIndex.reconstruct(idx, gpuVals.data());
-
-    std::vector<float> cpuVals(dim);
-    cpuIndex.reconstruct(idx, cpuVals.data());
-
-    EXPECT_EQ(gpuVals, cpuVals);
-}
-
-TEST(TestGpuIndexFlat, UnifiedMemory) {
-    // Construct on a random device to test multi-device, if we have
-    // multiple devices
-    int device = faiss::gpu::randVal(0, faiss::gpu::getNumDevices() - 1);
-
-    if (!faiss::gpu::getFullUnifiedMemSupport(device)) {
-        return;
-    }
-
-    int dim = 256;
-
-    // FIXME: GpuIndexFlat doesn't support > 2^31 (vecs * dims) due to
-    // kernel indexing, so we can't test unified memory for memory
-    // oversubscription.
-    size_t numVecs = 50000;
-    int numQuery = 10;
-    int k = 10;
-
-    faiss::IndexFlatL2 cpuIndexL2(dim);
-
-    faiss::gpu::StandardGpuResources res;
-    res.noTempMemory();
-
-    faiss::gpu::GpuIndexFlatConfig config;
-    config.device = device;
-    config.memorySpace = faiss::gpu::MemorySpace::Unified;
-
-    faiss::gpu::GpuIndexFlatL2 gpuIndexL2(&res, dim, config);
-
-    std::vector<float> vecs = faiss::gpu::randVecs(numVecs, dim);
-    cpuIndexL2.add(numVecs, vecs.data());
-    gpuIndexL2.add(numVecs, vecs.data());
-
-    // To some extent, we depend upon the relative error for the test
-    // for float16
-    faiss::gpu::compareIndices(
-            cpuIndexL2,
-            gpuIndexL2,
-            numQuery,
-            dim,
-            k,
-            "Unified Memory",
-            kF32MaxRelErr,
-            0.1f,
-            0.015f);
-}
-
-int main(int argc, char** argv) {
-    testing::InitGoogleTest(&argc, argv);
-
-    // just run with a fixed test seed
-    faiss::gpu::setTestSeed(100);
-
-    return RUN_ALL_TESTS();
-}
diff --git a/faiss/gpu_cuda/test/TestGpuIndexIVFFlat.cpp b/faiss/gpu_cuda/test/TestGpuIndexIVFFlat.cpp
deleted file mode 100644
index f67f037082a97e827b5d26912b4e0e038a60808e..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/TestGpuIndexIVFFlat.cpp
+++ /dev/null
@@ -1,555 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexFlat.h>
-#include <faiss/IndexIVFFlat.h>
-#include <faiss/gpu/GpuIndexIVFFlat.h>
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <gtest/gtest.h>
-#include <cmath>
-#include <sstream>
-#include <vector>
-
-// FIXME: figure out a better way to test fp16
-constexpr float kF16MaxRelErr = 0.3f;
-constexpr float kF32MaxRelErr = 0.03f;
-
-struct Options {
-    Options() {
-        numAdd = 2 * faiss::gpu::randVal(2000, 5000);
-        dim = faiss::gpu::randVal(64, 200);
-
-        numCentroids = std::sqrt((float)numAdd / 2);
-        numTrain = numCentroids * 40;
-        nprobe = faiss::gpu::randVal(std::min(10, numCentroids), numCentroids);
-        numQuery = faiss::gpu::randVal(32, 100);
-
-        // Due to the approximate nature of the query and of floating point
-        // differences between GPU and CPU, to stay within our error bounds,
-        // only use a small k
-        k = std::min(faiss::gpu::randVal(10, 30), numAdd / 40);
-        indicesOpt = faiss::gpu::randSelect(
-                {faiss::gpu::INDICES_CPU,
-                 faiss::gpu::INDICES_32_BIT,
-                 faiss::gpu::INDICES_64_BIT});
-
-        device = faiss::gpu::randVal(0, faiss::gpu::getNumDevices() - 1);
-    }
-
-    std::string toString() const {
-        std::stringstream str;
-        str << "IVFFlat device " << device << " numVecs " << numAdd << " dim "
-            << dim << " numCentroids " << numCentroids << " nprobe " << nprobe
-            << " numQuery " << numQuery << " k " << k << " indicesOpt "
-            << indicesOpt;
-
-        return str.str();
-    }
-
-    int numAdd;
-    int dim;
-    int numCentroids;
-    int numTrain;
-    int nprobe;
-    int numQuery;
-    int k;
-    int device;
-    faiss::gpu::IndicesOptions indicesOpt;
-};
-
-void queryTest(
-        faiss::MetricType metricType,
-        bool useFloat16CoarseQuantizer,
-        int dimOverride = -1) {
-    for (int tries = 0; tries < 2; ++tries) {
-        Options opt;
-        opt.dim = dimOverride != -1 ? dimOverride : opt.dim;
-
-        std::vector<float> trainVecs =
-                faiss::gpu::randVecs(opt.numTrain, opt.dim);
-        std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-        faiss::IndexFlatL2 quantizerL2(opt.dim);
-        faiss::IndexFlatIP quantizerIP(opt.dim);
-        faiss::Index* quantizer = metricType == faiss::METRIC_L2
-                ? (faiss::Index*)&quantizerL2
-                : (faiss::Index*)&quantizerIP;
-
-        faiss::IndexIVFFlat cpuIndex(
-                quantizer, opt.dim, opt.numCentroids, metricType);
-        cpuIndex.train(opt.numTrain, trainVecs.data());
-        cpuIndex.add(opt.numAdd, addVecs.data());
-        cpuIndex.nprobe = opt.nprobe;
-
-        faiss::gpu::StandardGpuResources res;
-        res.noTempMemory();
-
-        faiss::gpu::GpuIndexIVFFlatConfig config;
-        config.device = opt.device;
-        config.indicesOptions = opt.indicesOpt;
-        config.flatConfig.useFloat16 = useFloat16CoarseQuantizer;
-
-        faiss::gpu::GpuIndexIVFFlat gpuIndex(
-                &res, cpuIndex.d, cpuIndex.nlist, cpuIndex.metric_type, config);
-        gpuIndex.copyFrom(&cpuIndex);
-        gpuIndex.setNumProbes(opt.nprobe);
-
-        bool compFloat16 = useFloat16CoarseQuantizer;
-        faiss::gpu::compareIndices(
-                cpuIndex,
-                gpuIndex,
-                opt.numQuery,
-                opt.dim,
-                opt.k,
-                opt.toString(),
-                compFloat16 ? kF16MaxRelErr : kF32MaxRelErr,
-                // FIXME: the fp16 bounds are
-                // useless when math (the accumulator) is
-                // in fp16. Figure out another way to test
-                compFloat16 ? 0.70f : 0.1f,
-                compFloat16 ? 0.65f : 0.015f);
-    }
-}
-
-void addTest(faiss::MetricType metricType, bool useFloat16CoarseQuantizer) {
-    for (int tries = 0; tries < 2; ++tries) {
-        Options opt;
-
-        std::vector<float> trainVecs =
-                faiss::gpu::randVecs(opt.numTrain, opt.dim);
-        std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-        faiss::IndexFlatL2 quantizerL2(opt.dim);
-        faiss::IndexFlatIP quantizerIP(opt.dim);
-        faiss::Index* quantizer = metricType == faiss::METRIC_L2
-                ? (faiss::Index*)&quantizerL2
-                : (faiss::Index*)&quantizerIP;
-
-        faiss::IndexIVFFlat cpuIndex(
-                quantizer, opt.dim, opt.numCentroids, metricType);
-        cpuIndex.train(opt.numTrain, trainVecs.data());
-        cpuIndex.nprobe = opt.nprobe;
-
-        faiss::gpu::StandardGpuResources res;
-        res.noTempMemory();
-
-        faiss::gpu::GpuIndexIVFFlatConfig config;
-        config.device = opt.device;
-        config.indicesOptions = opt.indicesOpt;
-        config.flatConfig.useFloat16 = useFloat16CoarseQuantizer;
-
-        faiss::gpu::GpuIndexIVFFlat gpuIndex(
-                &res, cpuIndex.d, cpuIndex.nlist, cpuIndex.metric_type, config);
-        gpuIndex.copyFrom(&cpuIndex);
-        gpuIndex.setNumProbes(opt.nprobe);
-
-        cpuIndex.add(opt.numAdd, addVecs.data());
-        gpuIndex.add(opt.numAdd, addVecs.data());
-
-        bool compFloat16 = useFloat16CoarseQuantizer;
-        faiss::gpu::compareIndices(
-                cpuIndex,
-                gpuIndex,
-                opt.numQuery,
-                opt.dim,
-                opt.k,
-                opt.toString(),
-                compFloat16 ? kF16MaxRelErr : kF32MaxRelErr,
-                compFloat16 ? 0.70f : 0.1f,
-                compFloat16 ? 0.30f : 0.015f);
-    }
-}
-
-void copyToTest(bool useFloat16CoarseQuantizer) {
-    Options opt;
-    std::vector<float> trainVecs = faiss::gpu::randVecs(opt.numTrain, opt.dim);
-    std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-    faiss::gpu::StandardGpuResources res;
-    res.noTempMemory();
-
-    faiss::gpu::GpuIndexIVFFlatConfig config;
-    config.device = opt.device;
-    config.indicesOptions = opt.indicesOpt;
-    config.flatConfig.useFloat16 = useFloat16CoarseQuantizer;
-
-    faiss::gpu::GpuIndexIVFFlat gpuIndex(
-            &res, opt.dim, opt.numCentroids, faiss::METRIC_L2, config);
-    gpuIndex.train(opt.numTrain, trainVecs.data());
-    gpuIndex.add(opt.numAdd, addVecs.data());
-    gpuIndex.setNumProbes(opt.nprobe);
-
-    // use garbage values to see if we overwrite then
-    faiss::IndexFlatL2 cpuQuantizer(1);
-    faiss::IndexIVFFlat cpuIndex(&cpuQuantizer, 1, 1, faiss::METRIC_L2);
-    cpuIndex.nprobe = 1;
-
-    gpuIndex.copyTo(&cpuIndex);
-
-    EXPECT_EQ(cpuIndex.ntotal, gpuIndex.ntotal);
-    EXPECT_EQ(gpuIndex.ntotal, opt.numAdd);
-
-    EXPECT_EQ(cpuIndex.d, gpuIndex.d);
-    EXPECT_EQ(cpuIndex.quantizer->d, gpuIndex.quantizer->d);
-    EXPECT_EQ(cpuIndex.d, opt.dim);
-    EXPECT_EQ(cpuIndex.nlist, gpuIndex.getNumLists());
-    EXPECT_EQ(cpuIndex.nprobe, gpuIndex.getNumProbes());
-
-    testIVFEquality(cpuIndex, gpuIndex);
-
-    // Query both objects; results should be equivalent
-    bool compFloat16 = useFloat16CoarseQuantizer;
-    faiss::gpu::compareIndices(
-            cpuIndex,
-            gpuIndex,
-            opt.numQuery,
-            opt.dim,
-            opt.k,
-            opt.toString(),
-            compFloat16 ? kF16MaxRelErr : kF32MaxRelErr,
-            compFloat16 ? 0.70f : 0.1f,
-            compFloat16 ? 0.30f : 0.015f);
-}
-
-void copyFromTest(bool useFloat16CoarseQuantizer) {
-    Options opt;
-    std::vector<float> trainVecs = faiss::gpu::randVecs(opt.numTrain, opt.dim);
-    std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-    faiss::IndexFlatL2 cpuQuantizer(opt.dim);
-    faiss::IndexIVFFlat cpuIndex(
-            &cpuQuantizer, opt.dim, opt.numCentroids, faiss::METRIC_L2);
-    cpuIndex.nprobe = opt.nprobe;
-    cpuIndex.train(opt.numTrain, trainVecs.data());
-    cpuIndex.add(opt.numAdd, addVecs.data());
-
-    // use garbage values to see if we overwrite then
-    faiss::gpu::StandardGpuResources res;
-    res.noTempMemory();
-
-    faiss::gpu::GpuIndexIVFFlatConfig config;
-    config.device = opt.device;
-    config.indicesOptions = opt.indicesOpt;
-    config.flatConfig.useFloat16 = useFloat16CoarseQuantizer;
-
-    faiss::gpu::GpuIndexIVFFlat gpuIndex(&res, 1, 1, faiss::METRIC_L2, config);
-    gpuIndex.setNumProbes(1);
-
-    gpuIndex.copyFrom(&cpuIndex);
-
-    EXPECT_EQ(cpuIndex.ntotal, gpuIndex.ntotal);
-    EXPECT_EQ(gpuIndex.ntotal, opt.numAdd);
-
-    EXPECT_EQ(cpuIndex.d, gpuIndex.d);
-    EXPECT_EQ(cpuIndex.d, opt.dim);
-    EXPECT_EQ(cpuIndex.nlist, gpuIndex.getNumLists());
-    EXPECT_EQ(cpuIndex.nprobe, gpuIndex.getNumProbes());
-
-    testIVFEquality(cpuIndex, gpuIndex);
-
-    // Query both objects; results should be equivalent
-    bool compFloat16 = useFloat16CoarseQuantizer;
-    faiss::gpu::compareIndices(
-            cpuIndex,
-            gpuIndex,
-            opt.numQuery,
-            opt.dim,
-            opt.k,
-            opt.toString(),
-            compFloat16 ? kF16MaxRelErr : kF32MaxRelErr,
-            compFloat16 ? 0.70f : 0.1f,
-            compFloat16 ? 0.30f : 0.015f);
-}
-
-TEST(TestGpuIndexIVFFlat, Float32_32_Add_L2) {
-    addTest(faiss::METRIC_L2, false);
-}
-
-TEST(TestGpuIndexIVFFlat, Float32_32_Add_IP) {
-    addTest(faiss::METRIC_INNER_PRODUCT, false);
-}
-
-TEST(TestGpuIndexIVFFlat, Float16_32_Add_L2) {
-    addTest(faiss::METRIC_L2, true);
-}
-
-TEST(TestGpuIndexIVFFlat, Float16_32_Add_IP) {
-    addTest(faiss::METRIC_INNER_PRODUCT, true);
-}
-
-//
-// General query tests
-//
-
-TEST(TestGpuIndexIVFFlat, Float32_Query_L2) {
-    queryTest(faiss::METRIC_L2, false);
-}
-
-TEST(TestGpuIndexIVFFlat, Float32_Query_IP) {
-    queryTest(faiss::METRIC_INNER_PRODUCT, false);
-}
-
-// float16 coarse quantizer
-
-TEST(TestGpuIndexIVFFlat, Float16_32_Query_L2) {
-    queryTest(faiss::METRIC_L2, true);
-}
-
-TEST(TestGpuIndexIVFFlat, Float16_32_Query_IP) {
-    queryTest(faiss::METRIC_INNER_PRODUCT, true);
-}
-
-//
-// There are IVF list scanning specializations for 64-d and 128-d that we
-// make sure we explicitly test here
-//
-
-TEST(TestGpuIndexIVFFlat, Float32_Query_L2_64) {
-    queryTest(faiss::METRIC_L2, false, 64);
-}
-
-TEST(TestGpuIndexIVFFlat, Float32_Query_IP_64) {
-    queryTest(faiss::METRIC_INNER_PRODUCT, false, 64);
-}
-
-TEST(TestGpuIndexIVFFlat, Float32_Query_L2_128) {
-    queryTest(faiss::METRIC_L2, false, 128);
-}
-
-TEST(TestGpuIndexIVFFlat, Float32_Query_IP_128) {
-    queryTest(faiss::METRIC_INNER_PRODUCT, false, 128);
-}
-
-//
-// Copy tests
-//
-
-TEST(TestGpuIndexIVFFlat, Float32_32_CopyTo) {
-    copyToTest(false);
-}
-
-TEST(TestGpuIndexIVFFlat, Float32_32_CopyFrom) {
-    copyFromTest(false);
-}
-
-TEST(TestGpuIndexIVFFlat, Float32_negative) {
-    Options opt;
-
-    auto trainVecs = faiss::gpu::randVecs(opt.numTrain, opt.dim);
-    auto addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-    // Put all vecs on negative side
-    for (auto& f : trainVecs) {
-        f = std::abs(f) * -1.0f;
-    }
-
-    for (auto& f : addVecs) {
-        f *= std::abs(f) * -1.0f;
-    }
-
-    faiss::IndexFlatIP quantizerIP(opt.dim);
-    faiss::Index* quantizer = (faiss::Index*)&quantizerIP;
-
-    faiss::IndexIVFFlat cpuIndex(
-            quantizer, opt.dim, opt.numCentroids, faiss::METRIC_INNER_PRODUCT);
-    cpuIndex.train(opt.numTrain, trainVecs.data());
-    cpuIndex.add(opt.numAdd, addVecs.data());
-    cpuIndex.nprobe = opt.nprobe;
-
-    faiss::gpu::StandardGpuResources res;
-    res.noTempMemory();
-
-    faiss::gpu::GpuIndexIVFFlatConfig config;
-    config.device = opt.device;
-    config.indicesOptions = opt.indicesOpt;
-
-    faiss::gpu::GpuIndexIVFFlat gpuIndex(
-            &res, cpuIndex.d, cpuIndex.nlist, cpuIndex.metric_type, config);
-    gpuIndex.copyFrom(&cpuIndex);
-    gpuIndex.setNumProbes(opt.nprobe);
-
-    // Construct a positive test set
-    auto queryVecs = faiss::gpu::randVecs(opt.numQuery, opt.dim);
-
-    // Put all vecs on positive size
-    for (auto& f : queryVecs) {
-        f = std::abs(f);
-    }
-
-    bool compFloat16 = false;
-    faiss::gpu::compareIndices(
-            queryVecs,
-            cpuIndex,
-            gpuIndex,
-            opt.numQuery,
-            opt.dim,
-            opt.k,
-            opt.toString(),
-            compFloat16 ? kF16MaxRelErr : kF32MaxRelErr,
-            // FIXME: the fp16 bounds are
-            // useless when math (the accumulator) is
-            // in fp16. Figure out another way to test
-            compFloat16 ? 0.99f : 0.1f,
-            compFloat16 ? 0.65f : 0.015f);
-}
-
-//
-// NaN tests
-//
-
-TEST(TestGpuIndexIVFFlat, QueryNaN) {
-    Options opt;
-
-    std::vector<float> trainVecs = faiss::gpu::randVecs(opt.numTrain, opt.dim);
-    std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-    faiss::gpu::StandardGpuResources res;
-    res.noTempMemory();
-
-    faiss::gpu::GpuIndexIVFFlatConfig config;
-    config.device = opt.device;
-    config.indicesOptions = opt.indicesOpt;
-    config.flatConfig.useFloat16 = faiss::gpu::randBool();
-
-    faiss::gpu::GpuIndexIVFFlat gpuIndex(
-            &res, opt.dim, opt.numCentroids, faiss::METRIC_L2, config);
-    gpuIndex.setNumProbes(opt.nprobe);
-
-    gpuIndex.train(opt.numTrain, trainVecs.data());
-    gpuIndex.add(opt.numAdd, addVecs.data());
-
-    int numQuery = 10;
-    std::vector<float> nans(
-            numQuery * opt.dim, std::numeric_limits<float>::quiet_NaN());
-
-    std::vector<float> distances(numQuery * opt.k, 0);
-    std::vector<faiss::Index::idx_t> indices(numQuery * opt.k, 0);
-
-    gpuIndex.search(
-            numQuery, nans.data(), opt.k, distances.data(), indices.data());
-
-    for (int q = 0; q < numQuery; ++q) {
-        for (int k = 0; k < opt.k; ++k) {
-            EXPECT_EQ(indices[q * opt.k + k], -1);
-            EXPECT_EQ(
-                    distances[q * opt.k + k],
-                    std::numeric_limits<float>::max());
-        }
-    }
-}
-
-TEST(TestGpuIndexIVFFlat, AddNaN) {
-    Options opt;
-
-    faiss::gpu::StandardGpuResources res;
-    res.noTempMemory();
-
-    faiss::gpu::GpuIndexIVFFlatConfig config;
-    config.device = opt.device;
-    config.indicesOptions = opt.indicesOpt;
-    config.flatConfig.useFloat16 = faiss::gpu::randBool();
-
-    faiss::gpu::GpuIndexIVFFlat gpuIndex(
-            &res, opt.dim, opt.numCentroids, faiss::METRIC_L2, config);
-    gpuIndex.setNumProbes(opt.nprobe);
-
-    int numNans = 10;
-    std::vector<float> nans(
-            numNans * opt.dim, std::numeric_limits<float>::quiet_NaN());
-
-    // Make one vector valid (not the first vector, in order to test offset
-    // issues), which should actually add
-    for (int i = 0; i < opt.dim; ++i) {
-        nans[opt.dim + i] = i;
-    }
-
-    std::vector<float> trainVecs = faiss::gpu::randVecs(opt.numTrain, opt.dim);
-    gpuIndex.train(opt.numTrain, trainVecs.data());
-
-    // should not crash
-    EXPECT_EQ(gpuIndex.ntotal, 0);
-    gpuIndex.add(numNans, nans.data());
-
-    std::vector<float> queryVecs = faiss::gpu::randVecs(opt.numQuery, opt.dim);
-    std::vector<float> distance(opt.numQuery * opt.k, 0);
-    std::vector<faiss::Index::idx_t> indices(opt.numQuery * opt.k, 0);
-
-    // should not crash
-    gpuIndex.search(
-            opt.numQuery,
-            queryVecs.data(),
-            opt.k,
-            distance.data(),
-            indices.data());
-}
-
-TEST(TestGpuIndexIVFFlat, UnifiedMemory) {
-    // Construct on a random device to test multi-device, if we have
-    // multiple devices
-    int device = faiss::gpu::randVal(0, faiss::gpu::getNumDevices() - 1);
-
-    if (!faiss::gpu::getFullUnifiedMemSupport(device)) {
-        return;
-    }
-
-    int dim = 128;
-
-    int numCentroids = 256;
-    // Unfortunately it would take forever to add 24 GB in IVFPQ data,
-    // so just perform a small test with data allocated in the unified
-    // memory address space
-    size_t numAdd = 10000;
-    size_t numTrain = numCentroids * 40;
-    int numQuery = 10;
-    int k = 10;
-    int nprobe = 8;
-
-    std::vector<float> trainVecs = faiss::gpu::randVecs(numTrain, dim);
-    std::vector<float> addVecs = faiss::gpu::randVecs(numAdd, dim);
-
-    faiss::IndexFlatL2 quantizer(dim);
-    faiss::IndexIVFFlat cpuIndex(
-            &quantizer, dim, numCentroids, faiss::METRIC_L2);
-
-    cpuIndex.train(numTrain, trainVecs.data());
-    cpuIndex.add(numAdd, addVecs.data());
-    cpuIndex.nprobe = nprobe;
-
-    faiss::gpu::StandardGpuResources res;
-    res.noTempMemory();
-
-    faiss::gpu::GpuIndexIVFFlatConfig config;
-    config.device = device;
-    config.memorySpace = faiss::gpu::MemorySpace::Unified;
-
-    faiss::gpu::GpuIndexIVFFlat gpuIndex(
-            &res, dim, numCentroids, faiss::METRIC_L2, config);
-    gpuIndex.copyFrom(&cpuIndex);
-    gpuIndex.setNumProbes(nprobe);
-
-    faiss::gpu::compareIndices(
-            cpuIndex,
-            gpuIndex,
-            numQuery,
-            dim,
-            k,
-            "Unified Memory",
-            kF32MaxRelErr,
-            0.1f,
-            0.015f);
-}
-
-int main(int argc, char** argv) {
-    testing::InitGoogleTest(&argc, argv);
-
-    // just run with a fixed test seed
-    faiss::gpu::setTestSeed(100);
-
-    return RUN_ALL_TESTS();
-}
diff --git a/faiss/gpu_cuda/test/TestGpuIndexIVFPQ.cpp b/faiss/gpu_cuda/test/TestGpuIndexIVFPQ.cpp
deleted file mode 100644
index 15282c5e3dc199008476d78b57c3c894c5222f32..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/TestGpuIndexIVFPQ.cpp
+++ /dev/null
@@ -1,745 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexFlat.h>
-#include <faiss/IndexIVFPQ.h>
-#include <faiss/gpu/GpuIndexIVFPQ.h>
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <gtest/gtest.h>
-#include <cmath>
-#include <sstream>
-#include <vector>
-
-void pickEncoding(int& codes, int& dim) {
-    std::vector<int> codeSizes{
-            3, 4, 8, 12, 16, 20, 24, 28, 32, 40, 48, 56, 64, 96};
-
-    // Above 32 doesn't work with no precomputed codes
-    std::vector<int> dimSizes{4, 8, 10, 12, 16, 20, 24, 28, 32};
-
-    while (true) {
-        codes = codeSizes[faiss::gpu::randVal(0, codeSizes.size() - 1)];
-        dim = codes * dimSizes[faiss::gpu::randVal(0, dimSizes.size() - 1)];
-
-        // for such a small test, super-low or high dim is more likely to
-        // generate comparison errors
-        if (dim < 256 && dim >= 64) {
-            return;
-        }
-    }
-}
-
-struct Options {
-    Options() {
-        numAdd = faiss::gpu::randVal(2000, 5000);
-        numCentroids = std::sqrt((float)numAdd);
-        numTrain = numCentroids * 40;
-
-        pickEncoding(codes, dim);
-
-        // TODO: Change back to `faiss::gpu::randVal(3, 7)` when we officially
-        //   support non-multiple of 8 subcodes for IVFPQ.
-        bitsPerCode = 8;
-        nprobe = std::min(faiss::gpu::randVal(40, 1000), numCentroids);
-        numQuery = faiss::gpu::randVal(4, 8);
-
-        // Due to the approximate nature of the query and of floating point
-        // differences between GPU and CPU, to stay within our error bounds,
-        // only use a small k
-        k = std::min(faiss::gpu::randVal(5, 20), numAdd / 40);
-        usePrecomputed = faiss::gpu::randBool();
-        indicesOpt = faiss::gpu::randSelect(
-                {faiss::gpu::INDICES_CPU,
-                 faiss::gpu::INDICES_32_BIT,
-                 faiss::gpu::INDICES_64_BIT});
-        if (codes > 48) {
-            // large codes can only fit using float16
-            useFloat16 = true;
-        } else {
-            useFloat16 = faiss::gpu::randBool();
-        }
-
-        device = faiss::gpu::randVal(0, faiss::gpu::getNumDevices() - 1);
-    }
-
-    std::string toString() const {
-        std::stringstream str;
-        str << "IVFPQ device " << device << " numVecs " << numAdd << " dim "
-            << dim << " numCentroids " << numCentroids << " codes " << codes
-            << " bitsPerCode " << bitsPerCode << " nprobe " << nprobe
-            << " numQuery " << numQuery << " k " << k << " usePrecomputed "
-            << usePrecomputed << " indicesOpt " << indicesOpt << " useFloat16 "
-            << useFloat16;
-
-        return str.str();
-    }
-
-    float getCompareEpsilon() const {
-        return 0.035f;
-    }
-
-    float getPctMaxDiff1() const {
-        return useFloat16 ? 0.30f : 0.10f;
-    }
-
-    float getPctMaxDiffN() const {
-        return useFloat16 ? 0.05f : 0.02f;
-    }
-
-    int numAdd;
-    int numCentroids;
-    int numTrain;
-    int codes;
-    int dim;
-    int bitsPerCode;
-    int nprobe;
-    int numQuery;
-    int k;
-    bool usePrecomputed;
-    faiss::gpu::IndicesOptions indicesOpt;
-    bool useFloat16;
-    int device;
-};
-
-TEST(TestGpuIndexIVFPQ, Query_L2) {
-    for (int tries = 0; tries < 2; ++tries) {
-        Options opt;
-
-        std::vector<float> trainVecs =
-                faiss::gpu::randVecs(opt.numTrain, opt.dim);
-        std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-        faiss::IndexFlatL2 coarseQuantizer(opt.dim);
-        faiss::IndexIVFPQ cpuIndex(
-                &coarseQuantizer,
-                opt.dim,
-                opt.numCentroids,
-                opt.codes,
-                opt.bitsPerCode);
-        cpuIndex.nprobe = opt.nprobe;
-        cpuIndex.train(opt.numTrain, trainVecs.data());
-        cpuIndex.add(opt.numAdd, addVecs.data());
-
-        // Use the default temporary memory management to test the memory
-        // manager
-        faiss::gpu::StandardGpuResources res;
-
-        faiss::gpu::GpuIndexIVFPQConfig config;
-        config.device = opt.device;
-        config.usePrecomputedTables = (tries % 2 == 0);
-        config.indicesOptions = opt.indicesOpt;
-        config.useFloat16LookupTables = opt.useFloat16;
-
-        faiss::gpu::GpuIndexIVFPQ gpuIndex(&res, &cpuIndex, config);
-        gpuIndex.setNumProbes(opt.nprobe);
-
-        faiss::gpu::compareIndices(
-                cpuIndex,
-                gpuIndex,
-                opt.numQuery,
-                opt.dim,
-                opt.k,
-                opt.toString(),
-                opt.getCompareEpsilon(),
-                opt.getPctMaxDiff1(),
-                opt.getPctMaxDiffN());
-    }
-}
-
-void testMMCodeDistance(faiss::MetricType mt) {
-    // Explicitly test the code distance via batch matrix multiplication route
-    // (even for dimension sizes that would otherwise be handled by the
-    // specialized route (via enabling `useMMCodeDistance`)
-    for (int tries = 0; tries < 2; ++tries) {
-        Options opt;
-
-        std::vector<float> trainVecs =
-                faiss::gpu::randVecs(opt.numTrain, opt.dim);
-        std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-        faiss::IndexFlat coarseQuantizer(opt.dim, mt);
-        faiss::IndexIVFPQ cpuIndex(
-                &coarseQuantizer,
-                opt.dim,
-                opt.numCentroids,
-                opt.codes,
-                opt.bitsPerCode);
-        cpuIndex.nprobe = opt.nprobe;
-        cpuIndex.train(opt.numTrain, trainVecs.data());
-        cpuIndex.add(opt.numAdd, addVecs.data());
-
-        // Use the default temporary memory management to test the memory
-        // manager
-        faiss::gpu::StandardGpuResources res;
-
-        faiss::gpu::GpuIndexIVFPQConfig config;
-        config.device = opt.device;
-        config.usePrecomputedTables = false;
-        config.useMMCodeDistance = true;
-        config.indicesOptions = opt.indicesOpt;
-
-        // Make sure that the float16 version works as well
-        config.useFloat16LookupTables = (tries % 2 == 0);
-        config.flatConfig.useFloat16 = (tries % 2 == 1);
-
-        faiss::gpu::GpuIndexIVFPQ gpuIndex(&res, &cpuIndex, config);
-        gpuIndex.setNumProbes(opt.nprobe);
-
-        faiss::gpu::compareIndices(
-                cpuIndex,
-                gpuIndex,
-                opt.numQuery,
-                opt.dim,
-                opt.k,
-                opt.toString(),
-                opt.getCompareEpsilon(),
-                opt.getPctMaxDiff1(),
-                opt.getPctMaxDiffN());
-    }
-
-    // These sizes are not specialized, they will fall back to the MM version
-    for (int dimPerSubQ : {7, 11}) {
-        Options opt;
-
-        opt.codes = 12;
-        opt.dim = dimPerSubQ * opt.codes;
-
-        std::vector<float> trainVecs =
-                faiss::gpu::randVecs(opt.numTrain, opt.dim);
-        std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-        faiss::IndexFlat coarseQuantizer(opt.dim, mt);
-        faiss::IndexIVFPQ cpuIndex(
-                &coarseQuantizer,
-                opt.dim,
-                opt.numCentroids,
-                opt.codes,
-                opt.bitsPerCode);
-        cpuIndex.nprobe = opt.nprobe;
-        cpuIndex.train(opt.numTrain, trainVecs.data());
-        cpuIndex.add(opt.numAdd, addVecs.data());
-
-        // Use the default temporary memory management to test the memory
-        // manager
-        faiss::gpu::StandardGpuResources res;
-
-        faiss::gpu::GpuIndexIVFPQConfig config;
-        config.device = opt.device;
-        config.usePrecomputedTables = false;
-        config.indicesOptions = opt.indicesOpt;
-
-        // Make sure that the float16 version works as well
-        config.useFloat16LookupTables = (dimPerSubQ == 7);
-
-        faiss::gpu::GpuIndexIVFPQ gpuIndex(&res, &cpuIndex, config);
-        gpuIndex.setNumProbes(opt.nprobe);
-
-        faiss::gpu::compareIndices(
-                cpuIndex,
-                gpuIndex,
-                opt.numQuery,
-                opt.dim,
-                opt.k,
-                opt.toString(),
-                opt.getCompareEpsilon(),
-                opt.getPctMaxDiff1(),
-                opt.getPctMaxDiffN());
-    }
-}
-
-TEST(TestGpuIndexIVFPQ, Query_L2_MMCodeDistance) {
-    testMMCodeDistance(faiss::MetricType::METRIC_L2);
-}
-
-TEST(TestGpuIndexIVFPQ, Query_IP_MMCodeDistance) {
-    testMMCodeDistance(faiss::MetricType::METRIC_INNER_PRODUCT);
-}
-
-TEST(TestGpuIndexIVFPQ, Query_IP) {
-    for (int tries = 0; tries < 2; ++tries) {
-        Options opt;
-
-        std::vector<float> trainVecs =
-                faiss::gpu::randVecs(opt.numTrain, opt.dim);
-        std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-        faiss::IndexFlatIP coarseQuantizer(opt.dim);
-        faiss::IndexIVFPQ cpuIndex(
-                &coarseQuantizer,
-                opt.dim,
-                opt.numCentroids,
-                opt.codes,
-                opt.bitsPerCode);
-        cpuIndex.metric_type = faiss::MetricType::METRIC_INNER_PRODUCT;
-
-        cpuIndex.nprobe = opt.nprobe;
-        cpuIndex.train(opt.numTrain, trainVecs.data());
-        cpuIndex.add(opt.numAdd, addVecs.data());
-
-        // Use the default temporary memory management to test the memory
-        // manager
-        faiss::gpu::StandardGpuResources res;
-
-        faiss::gpu::GpuIndexIVFPQConfig config;
-        config.device = opt.device;
-        config.usePrecomputedTables = false; // not supported/required for IP
-        config.indicesOptions = opt.indicesOpt;
-        config.useFloat16LookupTables = opt.useFloat16;
-
-        faiss::gpu::GpuIndexIVFPQ gpuIndex(&res, &cpuIndex, config);
-        gpuIndex.setNumProbes(opt.nprobe);
-
-        faiss::gpu::compareIndices(
-                cpuIndex,
-                gpuIndex,
-                opt.numQuery,
-                opt.dim,
-                opt.k,
-                opt.toString(),
-                opt.getCompareEpsilon(),
-                opt.getPctMaxDiff1(),
-                opt.getPctMaxDiffN());
-    }
-}
-
-TEST(TestGpuIndexIVFPQ, Float16Coarse) {
-    Options opt;
-
-    std::vector<float> trainVecs = faiss::gpu::randVecs(opt.numTrain, opt.dim);
-    std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-    faiss::IndexFlatL2 coarseQuantizer(opt.dim);
-    faiss::IndexIVFPQ cpuIndex(
-            &coarseQuantizer,
-            opt.dim,
-            opt.numCentroids,
-            opt.codes,
-            opt.bitsPerCode);
-    cpuIndex.nprobe = opt.nprobe;
-    cpuIndex.train(opt.numTrain, trainVecs.data());
-
-    // Use the default temporary memory management to test the memory manager
-    faiss::gpu::StandardGpuResources res;
-
-    faiss::gpu::GpuIndexIVFPQConfig config;
-    config.device = opt.device;
-    config.flatConfig.useFloat16 = true;
-    config.usePrecomputedTables = opt.usePrecomputed;
-    config.indicesOptions = opt.indicesOpt;
-    config.useFloat16LookupTables = opt.useFloat16;
-
-    faiss::gpu::GpuIndexIVFPQ gpuIndex(&res, &cpuIndex, config);
-    gpuIndex.setNumProbes(opt.nprobe);
-
-    gpuIndex.add(opt.numAdd, addVecs.data());
-    cpuIndex.add(opt.numAdd, addVecs.data());
-
-    faiss::gpu::compareIndices(
-            cpuIndex,
-            gpuIndex,
-            opt.numQuery,
-            opt.dim,
-            opt.k,
-            opt.toString(),
-            opt.getCompareEpsilon(),
-            opt.getPctMaxDiff1(),
-            opt.getPctMaxDiffN());
-}
-
-TEST(TestGpuIndexIVFPQ, Add_L2) {
-    for (int tries = 0; tries < 2; ++tries) {
-        Options opt;
-
-        std::vector<float> trainVecs =
-                faiss::gpu::randVecs(opt.numTrain, opt.dim);
-        std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-        faiss::IndexFlatL2 coarseQuantizer(opt.dim);
-        faiss::IndexIVFPQ cpuIndex(
-                &coarseQuantizer,
-                opt.dim,
-                opt.numCentroids,
-                opt.codes,
-                opt.bitsPerCode);
-        cpuIndex.nprobe = opt.nprobe;
-        cpuIndex.train(opt.numTrain, trainVecs.data());
-
-        // Use the default temporary memory management to test the memory
-        // manager
-        faiss::gpu::StandardGpuResources res;
-
-        faiss::gpu::GpuIndexIVFPQConfig config;
-        config.device = opt.device;
-        config.usePrecomputedTables = opt.usePrecomputed;
-        config.indicesOptions = opt.indicesOpt;
-        config.useFloat16LookupTables = opt.useFloat16;
-
-        faiss::gpu::GpuIndexIVFPQ gpuIndex(&res, &cpuIndex, config);
-        gpuIndex.setNumProbes(opt.nprobe);
-
-        gpuIndex.add(opt.numAdd, addVecs.data());
-        cpuIndex.add(opt.numAdd, addVecs.data());
-
-        faiss::gpu::compareIndices(
-                cpuIndex,
-                gpuIndex,
-                opt.numQuery,
-                opt.dim,
-                opt.k,
-                opt.toString(),
-                opt.getCompareEpsilon(),
-                opt.getPctMaxDiff1(),
-                opt.getPctMaxDiffN());
-    }
-}
-
-TEST(TestGpuIndexIVFPQ, Add_IP) {
-    for (int tries = 0; tries < 2; ++tries) {
-        Options opt;
-
-        std::vector<float> trainVecs =
-                faiss::gpu::randVecs(opt.numTrain, opt.dim);
-        std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-        faiss::IndexFlatIP coarseQuantizer(opt.dim);
-        faiss::IndexIVFPQ cpuIndex(
-                &coarseQuantizer,
-                opt.dim,
-                opt.numCentroids,
-                opt.codes,
-                opt.bitsPerCode);
-        cpuIndex.metric_type = faiss::MetricType::METRIC_INNER_PRODUCT;
-        cpuIndex.nprobe = opt.nprobe;
-        cpuIndex.train(opt.numTrain, trainVecs.data());
-
-        // Use the default temporary memory management to test the memory
-        // manager
-        faiss::gpu::StandardGpuResources res;
-
-        faiss::gpu::GpuIndexIVFPQConfig config;
-        config.device = opt.device;
-        config.usePrecomputedTables = opt.usePrecomputed;
-        config.indicesOptions = opt.indicesOpt;
-        config.useFloat16LookupTables = opt.useFloat16;
-
-        faiss::gpu::GpuIndexIVFPQ gpuIndex(&res, &cpuIndex, config);
-        gpuIndex.setNumProbes(opt.nprobe);
-
-        gpuIndex.add(opt.numAdd, addVecs.data());
-        cpuIndex.add(opt.numAdd, addVecs.data());
-
-        faiss::gpu::compareIndices(
-                cpuIndex,
-                gpuIndex,
-                opt.numQuery,
-                opt.dim,
-                opt.k,
-                opt.toString(),
-                opt.getCompareEpsilon(),
-                opt.getPctMaxDiff1(),
-                opt.getPctMaxDiffN());
-    }
-}
-
-TEST(TestGpuIndexIVFPQ, CopyTo) {
-    for (int tries = 0; tries < 2; ++tries) {
-        Options opt;
-        std::vector<float> trainVecs =
-                faiss::gpu::randVecs(opt.numTrain, opt.dim);
-        std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-        // Use the default temporary memory management to test the memory
-        // manager
-        faiss::gpu::StandardGpuResources res;
-
-        faiss::gpu::GpuIndexIVFPQConfig config;
-        config.device = opt.device;
-        config.usePrecomputedTables = (tries % 2 == 0);
-        config.indicesOptions = opt.indicesOpt;
-        config.useFloat16LookupTables = opt.useFloat16;
-
-        faiss::gpu::GpuIndexIVFPQ gpuIndex(
-                &res,
-                opt.dim,
-                opt.numCentroids,
-                opt.codes,
-                opt.bitsPerCode,
-                faiss::METRIC_L2,
-                config);
-        gpuIndex.setNumProbes(opt.nprobe);
-        gpuIndex.train(opt.numTrain, trainVecs.data());
-        gpuIndex.add(opt.numAdd, addVecs.data());
-
-        // Use garbage values to see if we overwrite them
-        faiss::IndexFlatL2 cpuQuantizer(1);
-        faiss::IndexIVFPQ cpuIndex(&cpuQuantizer, 1, 1, 1, 1);
-
-        gpuIndex.copyTo(&cpuIndex);
-
-        EXPECT_EQ(cpuIndex.ntotal, gpuIndex.ntotal);
-        EXPECT_EQ(gpuIndex.ntotal, opt.numAdd);
-
-        EXPECT_EQ(cpuIndex.d, gpuIndex.d);
-        EXPECT_EQ(cpuIndex.d, opt.dim);
-        EXPECT_EQ(cpuIndex.nlist, gpuIndex.getNumLists());
-        EXPECT_EQ(cpuIndex.nprobe, gpuIndex.getNumProbes());
-        EXPECT_EQ(cpuIndex.pq.M, gpuIndex.getNumSubQuantizers());
-        EXPECT_EQ(gpuIndex.getNumSubQuantizers(), opt.codes);
-        EXPECT_EQ(cpuIndex.pq.nbits, gpuIndex.getBitsPerCode());
-        EXPECT_EQ(gpuIndex.getBitsPerCode(), opt.bitsPerCode);
-
-        testIVFEquality(cpuIndex, gpuIndex);
-
-        // Query both objects; results should be equivalent
-        faiss::gpu::compareIndices(
-                cpuIndex,
-                gpuIndex,
-                opt.numQuery,
-                opt.dim,
-                opt.k,
-                opt.toString(),
-                opt.getCompareEpsilon(),
-                opt.getPctMaxDiff1(),
-                opt.getPctMaxDiffN());
-    }
-}
-
-TEST(TestGpuIndexIVFPQ, CopyFrom) {
-    Options opt;
-    std::vector<float> trainVecs = faiss::gpu::randVecs(opt.numTrain, opt.dim);
-    std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-    faiss::IndexFlatL2 coarseQuantizer(opt.dim);
-    faiss::IndexIVFPQ cpuIndex(
-            &coarseQuantizer,
-            opt.dim,
-            opt.numCentroids,
-            opt.codes,
-            opt.bitsPerCode);
-    cpuIndex.nprobe = opt.nprobe;
-    cpuIndex.train(opt.numTrain, trainVecs.data());
-    cpuIndex.add(opt.numAdd, addVecs.data());
-
-    // Use the default temporary memory management to test the memory manager
-    faiss::gpu::StandardGpuResources res;
-
-    faiss::gpu::GpuIndexIVFPQConfig config;
-    config.device = opt.device;
-    config.usePrecomputedTables = opt.usePrecomputed;
-    config.indicesOptions = opt.indicesOpt;
-    config.useFloat16LookupTables = opt.useFloat16;
-
-    // Use garbage values to see if we overwrite them
-    faiss::gpu::GpuIndexIVFPQ gpuIndex(
-            &res, 1, 1, 1, 8, faiss::METRIC_L2, config);
-    gpuIndex.setNumProbes(1);
-
-    gpuIndex.copyFrom(&cpuIndex);
-
-    // Make sure we are equivalent
-    EXPECT_EQ(cpuIndex.ntotal, gpuIndex.ntotal);
-    EXPECT_EQ(gpuIndex.ntotal, opt.numAdd);
-
-    EXPECT_EQ(cpuIndex.d, gpuIndex.d);
-    EXPECT_EQ(cpuIndex.d, opt.dim);
-    EXPECT_EQ(cpuIndex.nlist, gpuIndex.getNumLists());
-    EXPECT_EQ(cpuIndex.nprobe, gpuIndex.getNumProbes());
-    EXPECT_EQ(cpuIndex.pq.M, gpuIndex.getNumSubQuantizers());
-    EXPECT_EQ(gpuIndex.getNumSubQuantizers(), opt.codes);
-    EXPECT_EQ(cpuIndex.pq.nbits, gpuIndex.getBitsPerCode());
-    EXPECT_EQ(gpuIndex.getBitsPerCode(), opt.bitsPerCode);
-
-    testIVFEquality(cpuIndex, gpuIndex);
-
-    // Query both objects; results should be equivalent
-    faiss::gpu::compareIndices(
-            cpuIndex,
-            gpuIndex,
-            opt.numQuery,
-            opt.dim,
-            opt.k,
-            opt.toString(),
-            opt.getCompareEpsilon(),
-            opt.getPctMaxDiff1(),
-            opt.getPctMaxDiffN());
-}
-
-TEST(TestGpuIndexIVFPQ, QueryNaN) {
-    Options opt;
-
-    std::vector<float> trainVecs = faiss::gpu::randVecs(opt.numTrain, opt.dim);
-    std::vector<float> addVecs = faiss::gpu::randVecs(opt.numAdd, opt.dim);
-
-    // Use the default temporary memory management to test the memory manager
-    faiss::gpu::StandardGpuResources res;
-
-    faiss::gpu::GpuIndexIVFPQConfig config;
-    config.device = opt.device;
-    config.usePrecomputedTables = opt.usePrecomputed;
-    config.indicesOptions = opt.indicesOpt;
-    config.useFloat16LookupTables = opt.useFloat16;
-
-    faiss::gpu::GpuIndexIVFPQ gpuIndex(
-            &res,
-            opt.dim,
-            opt.numCentroids,
-            opt.codes,
-            opt.bitsPerCode,
-            faiss::METRIC_L2,
-            config);
-
-    gpuIndex.setNumProbes(opt.nprobe);
-
-    gpuIndex.train(opt.numTrain, trainVecs.data());
-    gpuIndex.add(opt.numAdd, addVecs.data());
-
-    int numQuery = 5;
-    std::vector<float> nans(
-            numQuery * opt.dim, std::numeric_limits<float>::quiet_NaN());
-
-    std::vector<float> distances(numQuery * opt.k, 0);
-    std::vector<faiss::Index::idx_t> indices(numQuery * opt.k, 0);
-
-    gpuIndex.search(
-            numQuery, nans.data(), opt.k, distances.data(), indices.data());
-
-    for (int q = 0; q < numQuery; ++q) {
-        for (int k = 0; k < opt.k; ++k) {
-            EXPECT_EQ(indices[q * opt.k + k], -1);
-            EXPECT_EQ(
-                    distances[q * opt.k + k],
-                    std::numeric_limits<float>::max());
-        }
-    }
-}
-
-TEST(TestGpuIndexIVFPQ, AddNaN) {
-    Options opt;
-
-    // Use the default temporary memory management to test the memory manager
-    faiss::gpu::StandardGpuResources res;
-
-    faiss::gpu::GpuIndexIVFPQConfig config;
-    config.device = opt.device;
-    config.usePrecomputedTables = opt.usePrecomputed;
-    config.indicesOptions = opt.indicesOpt;
-    config.useFloat16LookupTables = opt.useFloat16;
-
-    faiss::gpu::GpuIndexIVFPQ gpuIndex(
-            &res,
-            opt.dim,
-            opt.numCentroids,
-            opt.codes,
-            opt.bitsPerCode,
-            faiss::METRIC_L2,
-            config);
-
-    gpuIndex.setNumProbes(opt.nprobe);
-
-    int numNans = 10;
-    std::vector<float> nans(
-            numNans * opt.dim, std::numeric_limits<float>::quiet_NaN());
-
-    // Make one vector valid, which should actually add
-    for (int i = 0; i < opt.dim; ++i) {
-        nans[i] = 0.0f;
-    }
-
-    std::vector<float> trainVecs = faiss::gpu::randVecs(opt.numTrain, opt.dim);
-    gpuIndex.train(opt.numTrain, trainVecs.data());
-
-    // should not crash
-    EXPECT_EQ(gpuIndex.ntotal, 0);
-    gpuIndex.add(numNans, nans.data());
-
-    std::vector<float> queryVecs = faiss::gpu::randVecs(opt.numQuery, opt.dim);
-    std::vector<float> distance(opt.numQuery * opt.k, 0);
-    std::vector<faiss::Index::idx_t> indices(opt.numQuery * opt.k, 0);
-
-    // should not crash
-    gpuIndex.search(
-            opt.numQuery,
-            queryVecs.data(),
-            opt.k,
-            distance.data(),
-            indices.data());
-}
-
-TEST(TestGpuIndexIVFPQ, UnifiedMemory) {
-    // Construct on a random device to test multi-device, if we have
-    // multiple devices
-    int device = faiss::gpu::randVal(0, faiss::gpu::getNumDevices() - 1);
-
-    if (!faiss::gpu::getFullUnifiedMemSupport(device)) {
-        return;
-    }
-
-    int dim = 128;
-
-    int numCentroids = 256;
-    // Unfortunately it would take forever to add 24 GB in IVFPQ data,
-    // so just perform a small test with data allocated in the unified
-    // memory address space
-    size_t numAdd = 10000;
-    size_t numTrain = numCentroids * 40;
-    int numQuery = 10;
-    int k = 10;
-    int nprobe = 8;
-    int codes = 8;
-    int bitsPerCode = 8;
-
-    std::vector<float> trainVecs = faiss::gpu::randVecs(numTrain, dim);
-    std::vector<float> addVecs = faiss::gpu::randVecs(numAdd, dim);
-
-    faiss::IndexFlatL2 quantizer(dim);
-    faiss::IndexIVFPQ cpuIndex(
-            &quantizer, dim, numCentroids, codes, bitsPerCode);
-
-    cpuIndex.train(numTrain, trainVecs.data());
-    cpuIndex.add(numAdd, addVecs.data());
-    cpuIndex.nprobe = nprobe;
-
-    faiss::gpu::StandardGpuResources res;
-    res.noTempMemory();
-
-    faiss::gpu::GpuIndexIVFPQConfig config;
-    config.device = device;
-    config.memorySpace = faiss::gpu::MemorySpace::Unified;
-
-    faiss::gpu::GpuIndexIVFPQ gpuIndex(
-            &res,
-            dim,
-            numCentroids,
-            codes,
-            bitsPerCode,
-            faiss::METRIC_L2,
-            config);
-    gpuIndex.copyFrom(&cpuIndex);
-    gpuIndex.setNumProbes(nprobe);
-
-    faiss::gpu::compareIndices(
-            cpuIndex,
-            gpuIndex,
-            numQuery,
-            dim,
-            k,
-            "Unified Memory",
-            0.015f,
-            0.1f,
-            0.015f);
-}
-
-int main(int argc, char** argv) {
-    testing::InitGoogleTest(&argc, argv);
-
-    // just run with a fixed test seed
-    faiss::gpu::setTestSeed(100);
-
-    return RUN_ALL_TESTS();
-}
diff --git a/faiss/gpu_cuda/test/TestGpuIndexIVFScalarQuantizer.cpp b/faiss/gpu_cuda/test/TestGpuIndexIVFScalarQuantizer.cpp
deleted file mode 100644
index ea21aec3c28524ea6559aa22887661cd842e91ce..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/TestGpuIndexIVFScalarQuantizer.cpp
+++ /dev/null
@@ -1,233 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexFlat.h>
-#include <faiss/IndexScalarQuantizer.h>
-#include <faiss/gpu/GpuIndexIVFScalarQuantizer.h>
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <gtest/gtest.h>
-#include <cmath>
-#include <sstream>
-#include <vector>
-
-constexpr float kF32MaxRelErr = 0.03f;
-
-struct Options {
-    Options() {
-        numAdd = 2 * faiss::gpu::randVal(2000, 5000);
-        dim = faiss::gpu::randVal(64, 200);
-
-        numCentroids = std::sqrt((float)numAdd / 2);
-        numTrain = numCentroids * 40;
-        nprobe = faiss::gpu::randVal(std::min(10, numCentroids), numCentroids);
-        numQuery = faiss::gpu::randVal(32, 100);
-
-        // Due to the approximate nature of the query and of floating point
-        // differences between GPU and CPU, to stay within our error bounds,
-        // only use a small k
-        k = std::min(faiss::gpu::randVal(10, 30), numAdd / 40);
-        indicesOpt = faiss::gpu::randSelect(
-                {faiss::gpu::INDICES_CPU,
-                 faiss::gpu::INDICES_32_BIT,
-                 faiss::gpu::INDICES_64_BIT});
-
-        device = faiss::gpu::randVal(0, faiss::gpu::getNumDevices() - 1);
-    }
-
-    std::string toString() const {
-        std::stringstream str;
-        str << "IVFFlat device " << device << " numVecs " << numAdd << " dim "
-            << dim << " numCentroids " << numCentroids << " nprobe " << nprobe
-            << " numQuery " << numQuery << " k " << k << " indicesOpt "
-            << indicesOpt;
-
-        return str.str();
-    }
-
-    int numAdd;
-    int dim;
-    int numCentroids;
-    int numTrain;
-    int nprobe;
-    int numQuery;
-    int k;
-    int device;
-    faiss::gpu::IndicesOptions indicesOpt;
-};
-
-void runCopyToTest(faiss::ScalarQuantizer::QuantizerType qtype) {
-    using namespace faiss;
-    using namespace faiss::gpu;
-
-    Options opt;
-    std::vector<float> trainVecs = randVecs(opt.numTrain, opt.dim);
-    std::vector<float> addVecs = randVecs(opt.numAdd, opt.dim);
-
-    StandardGpuResources res;
-    res.noTempMemory();
-
-    auto config = GpuIndexIVFScalarQuantizerConfig();
-    config.device = opt.device;
-
-    GpuIndexIVFScalarQuantizer gpuIndex(
-            &res, opt.dim, opt.numCentroids, qtype, METRIC_L2, true, config);
-    gpuIndex.train(opt.numTrain, trainVecs.data());
-    gpuIndex.add(opt.numAdd, addVecs.data());
-    gpuIndex.setNumProbes(opt.nprobe);
-
-    // use garbage values to see if we overwrite then
-    IndexFlatL2 cpuQuantizer(1);
-    IndexIVFScalarQuantizer cpuIndex(
-            &cpuQuantizer,
-            1,
-            1,
-            ScalarQuantizer::QuantizerType::QT_6bit,
-            METRIC_L2);
-    cpuIndex.nprobe = 1;
-
-    gpuIndex.copyTo(&cpuIndex);
-
-    EXPECT_EQ(cpuIndex.ntotal, gpuIndex.ntotal);
-    EXPECT_EQ(gpuIndex.ntotal, opt.numAdd);
-
-    EXPECT_EQ(cpuIndex.d, gpuIndex.d);
-    EXPECT_EQ(cpuIndex.quantizer->d, gpuIndex.quantizer->d);
-    EXPECT_EQ(cpuIndex.d, opt.dim);
-    EXPECT_EQ(cpuIndex.nlist, gpuIndex.getNumLists());
-    EXPECT_EQ(cpuIndex.nprobe, gpuIndex.getNumProbes());
-
-    testIVFEquality(cpuIndex, gpuIndex);
-
-    // Query both objects; results should be equivalent
-    compareIndices(
-            cpuIndex,
-            gpuIndex,
-            opt.numQuery,
-            opt.dim,
-            opt.k,
-            opt.toString(),
-            kF32MaxRelErr,
-            0.1f,
-            0.015f);
-}
-
-TEST(TestGpuIndexIVFScalarQuantizer, CopyTo_fp16) {
-    runCopyToTest(faiss::ScalarQuantizer::QuantizerType::QT_fp16);
-}
-
-TEST(TestGpuIndexIVFScalarQuantizer, CopyTo_8bit) {
-    runCopyToTest(faiss::ScalarQuantizer::QuantizerType::QT_8bit);
-}
-
-TEST(TestGpuIndexIVFScalarQuantizer, CopyTo_8bit_uniform) {
-    runCopyToTest(faiss::ScalarQuantizer::QuantizerType::QT_8bit_uniform);
-}
-
-TEST(TestGpuIndexIVFScalarQuantizer, CopyTo_6bit) {
-    runCopyToTest(faiss::ScalarQuantizer::QuantizerType::QT_6bit);
-}
-
-TEST(TestGpuIndexIVFScalarQuantizer, CopyTo_4bit) {
-    runCopyToTest(faiss::ScalarQuantizer::QuantizerType::QT_4bit);
-}
-
-TEST(TestGpuIndexIVFScalarQuantizer, CopyTo_4bit_uniform) {
-    runCopyToTest(faiss::ScalarQuantizer::QuantizerType::QT_4bit_uniform);
-}
-
-void runCopyFromTest(faiss::ScalarQuantizer::QuantizerType qtype) {
-    using namespace faiss;
-    using namespace faiss::gpu;
-
-    Options opt;
-    std::vector<float> trainVecs = randVecs(opt.numTrain, opt.dim);
-    std::vector<float> addVecs = randVecs(opt.numAdd, opt.dim);
-
-    IndexFlatL2 cpuQuantizer(opt.dim);
-    IndexIVFScalarQuantizer cpuIndex(
-            &cpuQuantizer, opt.dim, opt.numCentroids, qtype, METRIC_L2);
-
-    cpuIndex.nprobe = opt.nprobe;
-    cpuIndex.train(opt.numTrain, trainVecs.data());
-    cpuIndex.add(opt.numAdd, addVecs.data());
-
-    // use garbage values to see if we overwrite then
-    StandardGpuResources res;
-    res.noTempMemory();
-
-    auto config = GpuIndexIVFScalarQuantizerConfig();
-    config.device = opt.device;
-
-    GpuIndexIVFScalarQuantizer gpuIndex(
-            &res,
-            1,
-            1,
-            ScalarQuantizer::QuantizerType::QT_4bit,
-            METRIC_L2,
-            false,
-            config);
-    gpuIndex.setNumProbes(1);
-
-    gpuIndex.copyFrom(&cpuIndex);
-
-    EXPECT_EQ(cpuIndex.ntotal, gpuIndex.ntotal);
-    EXPECT_EQ(gpuIndex.ntotal, opt.numAdd);
-
-    EXPECT_EQ(cpuIndex.d, gpuIndex.d);
-    EXPECT_EQ(cpuIndex.d, opt.dim);
-    EXPECT_EQ(cpuIndex.nlist, gpuIndex.getNumLists());
-    EXPECT_EQ(cpuIndex.nprobe, gpuIndex.getNumProbes());
-
-    testIVFEquality(cpuIndex, gpuIndex);
-
-    // Query both objects; results should be equivalent
-    compareIndices(
-            cpuIndex,
-            gpuIndex,
-            opt.numQuery,
-            opt.dim,
-            opt.k,
-            opt.toString(),
-            kF32MaxRelErr,
-            0.1f,
-            0.015f);
-}
-
-TEST(TestGpuIndexIVFScalarQuantizer, CopyFrom_fp16) {
-    runCopyFromTest(faiss::ScalarQuantizer::QuantizerType::QT_fp16);
-}
-
-TEST(TestGpuIndexIVFScalarQuantizer, CopyFrom_8bit) {
-    runCopyFromTest(faiss::ScalarQuantizer::QuantizerType::QT_8bit);
-}
-
-TEST(TestGpuIndexIVFScalarQuantizer, CopyFrom_8bit_uniform) {
-    runCopyFromTest(faiss::ScalarQuantizer::QuantizerType::QT_8bit_uniform);
-}
-
-TEST(TestGpuIndexIVFScalarQuantizer, CopyFrom_6bit) {
-    runCopyFromTest(faiss::ScalarQuantizer::QuantizerType::QT_6bit);
-}
-
-TEST(TestGpuIndexIVFScalarQuantizer, CopyFrom_4bit) {
-    runCopyFromTest(faiss::ScalarQuantizer::QuantizerType::QT_4bit);
-}
-
-TEST(TestGpuIndexIVFScalarQuantizer, CopyFrom_4bit_uniform) {
-    runCopyFromTest(faiss::ScalarQuantizer::QuantizerType::QT_4bit_uniform);
-}
-
-int main(int argc, char** argv) {
-    testing::InitGoogleTest(&argc, argv);
-
-    // just run with a fixed test seed
-    faiss::gpu::setTestSeed(100);
-
-    return RUN_ALL_TESTS();
-}
diff --git a/faiss/gpu_cuda/test/TestGpuMemoryException.cpp b/faiss/gpu_cuda/test/TestGpuMemoryException.cpp
deleted file mode 100644
index c6f6e9bdeb4e949d21f092c1e815197500d93348..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/TestGpuMemoryException.cpp
+++ /dev/null
@@ -1,92 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/IndexFlat.h>
-#include <faiss/gpu/GpuIndexFlat.h>
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <gtest/gtest.h>
-
-// Test to see if we can recover after attempting to allocate too much GPU
-// memory
-TEST(TestGpuMemoryException, AddException) {
-    size_t numBrokenAdd = std::numeric_limits<int>::max();
-    size_t numRealAdd = 10000;
-    size_t devFree = 0;
-    size_t devTotal = 0;
-
-    CUDA_VERIFY(cudaMemGetInfo(&devFree, &devTotal));
-
-    // Figure out the dimensionality needed to get at least greater than
-    // devTotal
-    size_t brokenAddDims = ((devTotal / sizeof(float)) / numBrokenAdd) + 1;
-    size_t realAddDims = 128;
-
-    faiss::gpu::StandardGpuResources res;
-
-    faiss::gpu::GpuIndexFlatConfig config;
-    config.device = faiss::gpu::randVal(0, faiss::gpu::getNumDevices() - 1);
-
-    faiss::gpu::GpuIndexFlatL2 gpuIndexL2Broken(
-            &res, (int)brokenAddDims, config);
-    faiss::gpu::GpuIndexFlatL2 gpuIndexL2(&res, (int)realAddDims, config);
-    faiss::IndexFlatL2 cpuIndex((int)realAddDims);
-
-    // Should throw on attempting to allocate too much data
-    {
-        // allocate memory without initialization
-        auto vecs = std::unique_ptr<float[]>(
-                new float[numBrokenAdd * brokenAddDims]);
-        EXPECT_THROW(
-                gpuIndexL2Broken.add(numBrokenAdd, vecs.get()),
-                faiss::FaissException);
-    }
-
-    // Should be able to add a smaller set of data now
-    {
-        auto vecs = faiss::gpu::randVecs(numRealAdd, realAddDims);
-        EXPECT_NO_THROW(gpuIndexL2.add(numRealAdd, vecs.data()));
-        cpuIndex.add(numRealAdd, vecs.data());
-    }
-
-    // Should throw on attempting to allocate too much data
-    {
-        // allocate memory without initialization
-        auto vecs = std::unique_ptr<float[]>(
-                new float[numBrokenAdd * brokenAddDims]);
-        EXPECT_THROW(
-                gpuIndexL2Broken.add(numBrokenAdd, vecs.get()),
-                faiss::FaissException);
-    }
-
-    // Should be able to query results from what we had before
-    {
-        size_t numQuery = 10;
-        auto vecs = faiss::gpu::randVecs(numQuery, realAddDims);
-        EXPECT_NO_THROW(compareIndices(
-                vecs,
-                cpuIndex,
-                gpuIndexL2,
-                numQuery,
-                realAddDims,
-                50,
-                "",
-                6e-3f,
-                0.1f,
-                0.015f));
-    }
-}
-
-int main(int argc, char** argv) {
-    testing::InitGoogleTest(&argc, argv);
-
-    // just run with a fixed test seed
-    faiss::gpu::setTestSeed(100);
-
-    return RUN_ALL_TESTS();
-}
diff --git a/faiss/gpu_cuda/test/TestGpuSelect.cu b/faiss/gpu_cuda/test/TestGpuSelect.cu
deleted file mode 100644
index 0c4c09879a06a7dc608ff315469c3a4609c19c16..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/TestGpuSelect.cu
+++ /dev/null
@@ -1,205 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/StandardGpuResources.h>
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <gtest/gtest.h>
-#include <algorithm>
-#include <faiss/gpu/utils/BlockSelectKernel.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-#include <faiss/gpu/utils/WarpSelectKernel.cuh>
-#include <sstream>
-#include <unordered_map>
-#include <vector>
-
-void testForSize(int rows, int cols, int k, bool dir, bool warp) {
-    using namespace faiss::gpu;
-
-    StandardGpuResources res;
-
-    std::vector<float> v = randVecs(rows, cols);
-    HostTensor<float, 2, true> hostVal({rows, cols});
-
-    for (int r = 0; r < rows; ++r) {
-        for (int c = 0; c < cols; ++c) {
-            hostVal[r][c] = v[r * cols + c];
-        }
-    }
-
-    // row -> (val -> idx)
-    std::unordered_map<int, std::vector<std::pair<int, float>>>
-            hostOutValAndInd;
-    for (int r = 0; r < rows; ++r) {
-        std::vector<std::pair<int, float>> closest;
-
-        for (int c = 0; c < cols; ++c) {
-            closest.emplace_back(c, (float)hostVal[r][c]);
-        }
-
-        auto dirFalseFn = [](std::pair<int, float>& a,
-                             std::pair<int, float>& b) {
-            return a.second < b.second;
-        };
-        auto dirTrueFn = [](std::pair<int, float>& a,
-                            std::pair<int, float>& b) {
-            return a.second > b.second;
-        };
-
-        std::sort(closest.begin(), closest.end(), dir ? dirTrueFn : dirFalseFn);
-        hostOutValAndInd.emplace(r, closest);
-    }
-
-    // Select top-k on GPU
-    DeviceTensor<float, 2, true> gpuVal(
-            res.getResources().get(),
-            makeDevAlloc(AllocType::Other, 0),
-            hostVal);
-    DeviceTensor<float, 2, true> gpuOutVal(
-            res.getResources().get(),
-            makeDevAlloc(AllocType::Other, 0),
-            {rows, k});
-    DeviceTensor<int, 2, true> gpuOutInd(
-            res.getResources().get(),
-            makeDevAlloc(AllocType::Other, 0),
-            {rows, k});
-
-    if (warp) {
-        runWarpSelect(gpuVal, gpuOutVal, gpuOutInd, dir, k, 0);
-    } else {
-        runBlockSelect(gpuVal, gpuOutVal, gpuOutInd, dir, k, 0);
-    }
-
-    // Copy back to CPU
-    HostTensor<float, 2, true> outVal(gpuOutVal, 0);
-    HostTensor<int, 2, true> outInd(gpuOutInd, 0);
-
-    for (int r = 0; r < rows; ++r) {
-        std::unordered_map<int, int> seenIndices;
-
-        for (int i = 0; i < k; ++i) {
-            float gpuV = outVal[r][i];
-            float cpuV = hostOutValAndInd[r][i].second;
-
-            EXPECT_EQ(gpuV, cpuV)
-                    << "rows " << rows << " cols " << cols << " k " << k
-                    << " dir " << dir << " row " << r << " ind " << i;
-
-            // If there are identical elements in a row that should be
-            // within the top-k, then it is possible that the index can
-            // differ, because the order in which the GPU will see the
-            // equivalent values is different than the CPU (and will remain
-            // unspecified, since this is affected by the choice of
-            // k-selection algorithm that we use)
-            int gpuInd = outInd[r][i];
-            int cpuInd = hostOutValAndInd[r][i].first;
-
-            // We should never see duplicate indices, however
-            auto itSeenIndex = seenIndices.find(gpuInd);
-
-            EXPECT_EQ(itSeenIndex, seenIndices.end())
-                    << "Row " << r << " user index " << gpuInd
-                    << " was seen at both " << itSeenIndex->second << " and "
-                    << i;
-
-            seenIndices[gpuInd] = i;
-
-            if (gpuInd != cpuInd) {
-                // Gather the values from the original data via index; the
-                // values should be the same
-                float gpuGatherV = hostVal[r][gpuInd];
-                float cpuGatherV = hostVal[r][cpuInd];
-
-                EXPECT_EQ(gpuGatherV, cpuGatherV)
-                        << "rows " << rows << " cols " << cols << " k " << k
-                        << " dir " << dir << " row " << r << " ind " << i
-                        << " source ind " << gpuInd << " " << cpuInd;
-            }
-        }
-    }
-}
-
-// General test
-TEST(TestGpuSelect, test) {
-    for (int i = 0; i < 10; ++i) {
-        int rows = faiss::gpu::randVal(10, 100);
-        int cols = faiss::gpu::randVal(1, 30000);
-        int k = std::min(cols, faiss::gpu::randVal(1, GPU_MAX_SELECTION_K));
-        bool dir = faiss::gpu::randBool();
-
-        testForSize(rows, cols, k, dir, false);
-    }
-}
-
-// Test for k = 1
-TEST(TestGpuSelect, test1) {
-    for (int i = 0; i < 5; ++i) {
-        int rows = faiss::gpu::randVal(10, 100);
-        int cols = faiss::gpu::randVal(1, 30000);
-        bool dir = faiss::gpu::randBool();
-
-        testForSize(rows, cols, 1, dir, false);
-    }
-}
-
-// Test for where k = #cols exactly (we are returning all the values,
-// just sorted)
-TEST(TestGpuSelect, testExact) {
-    for (int i = 0; i < 5; ++i) {
-        int rows = faiss::gpu::randVal(10, 100);
-        int cols = faiss::gpu::randVal(1, GPU_MAX_SELECTION_K);
-        bool dir = faiss::gpu::randBool();
-
-        testForSize(rows, cols, cols, dir, false);
-    }
-}
-
-// General test
-TEST(TestGpuSelect, testWarp) {
-    for (int i = 0; i < 10; ++i) {
-        int rows = faiss::gpu::randVal(10, 100);
-        int cols = faiss::gpu::randVal(1, 30000);
-        int k = std::min(cols, faiss::gpu::randVal(1, GPU_MAX_SELECTION_K));
-        bool dir = faiss::gpu::randBool();
-
-        testForSize(rows, cols, k, dir, true);
-    }
-}
-
-// Test for k = 1
-TEST(TestGpuSelect, test1Warp) {
-    for (int i = 0; i < 5; ++i) {
-        int rows = faiss::gpu::randVal(10, 100);
-        int cols = faiss::gpu::randVal(1, 30000);
-        bool dir = faiss::gpu::randBool();
-
-        testForSize(rows, cols, 1, dir, true);
-    }
-}
-
-// Test for where k = #cols exactly (we are returning all the values,
-// just sorted)
-TEST(TestGpuSelect, testExactWarp) {
-    for (int i = 0; i < 5; ++i) {
-        int rows = faiss::gpu::randVal(10, 100);
-        int cols = faiss::gpu::randVal(1, GPU_MAX_SELECTION_K);
-        bool dir = faiss::gpu::randBool();
-
-        testForSize(rows, cols, cols, dir, true);
-    }
-}
-
-int main(int argc, char** argv) {
-    testing::InitGoogleTest(&argc, argv);
-
-    // just run with a fixed test seed
-    faiss::gpu::setTestSeed(100);
-
-    return RUN_ALL_TESTS();
-}
diff --git a/faiss/gpu_cuda/test/TestUtils.cpp b/faiss/gpu_cuda/test/TestUtils.cpp
deleted file mode 100644
index 29fbef0335c1de48857fd9f000589511f590de16..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/TestUtils.cpp
+++ /dev/null
@@ -1,353 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/test/TestUtils.h>
-#include <faiss/utils/random.h>
-#include <gtest/gtest.h>
-#include <time.h>
-#include <cmath>
-#include <set>
-#include <sstream>
-#include <unordered_map>
-
-namespace faiss {
-namespace gpu {
-
-inline float relativeError(float a, float b) {
-    return std::abs(a - b) / (0.5f * (std::abs(a) + std::abs(b)));
-}
-
-// This seed is also used for the faiss float_rand API; in a test it
-// is all within a single thread, so it is ok
-long s_seed = 1;
-std::mt19937 rng(1);
-std::uniform_int_distribution<> distrib;
-
-void newTestSeed() {
-    struct timespec t;
-    clock_gettime(CLOCK_REALTIME, &t);
-
-    setTestSeed(t.tv_nsec);
-}
-
-void setTestSeed(long seed) {
-    printf("testing with random seed %ld\n", seed);
-
-    rng = std::mt19937(seed);
-    s_seed = seed;
-}
-
-int randVal(int a, int b) {
-    EXPECT_GE(a, 0);
-    EXPECT_LE(a, b);
-
-    return a + (distrib(rng) % (b + 1 - a));
-}
-
-bool randBool() {
-    return randSelect<bool>({true, false});
-}
-
-std::vector<float> randVecs(size_t num, size_t dim) {
-    std::vector<float> v(num * dim);
-
-    faiss::float_rand(v.data(), v.size(), s_seed);
-    // unfortunately we generate separate sets of vectors, and don't
-    // want the same values
-    ++s_seed;
-
-    return v;
-}
-
-std::vector<unsigned char> randBinaryVecs(size_t num, size_t dim) {
-    std::vector<unsigned char> v(num * (dim / 8));
-
-    faiss::byte_rand(v.data(), v.size(), s_seed);
-    // unfortunately we generate separate sets of vectors, and don't
-    // want the same values
-    ++s_seed;
-
-    return v;
-}
-
-void compareIndices(
-        const std::vector<float>& queryVecs,
-        faiss::Index& refIndex,
-        faiss::Index& testIndex,
-        int numQuery,
-        int /*dim*/,
-        int k,
-        const std::string& configMsg,
-        float maxRelativeError,
-        float pctMaxDiff1,
-        float pctMaxDiffN) {
-    // Compare
-    std::vector<float> refDistance(numQuery * k, 0);
-    std::vector<faiss::Index::idx_t> refIndices(numQuery * k, -1);
-    refIndex.search(
-            numQuery,
-            queryVecs.data(),
-            k,
-            refDistance.data(),
-            refIndices.data());
-
-    std::vector<float> testDistance(numQuery * k, 0);
-    std::vector<faiss::Index::idx_t> testIndices(numQuery * k, -1);
-    testIndex.search(
-            numQuery,
-            queryVecs.data(),
-            k,
-            testDistance.data(),
-            testIndices.data());
-
-    faiss::gpu::compareLists(
-            refDistance.data(),
-            refIndices.data(),
-            testDistance.data(),
-            testIndices.data(),
-            numQuery,
-            k,
-            configMsg,
-            true,
-            false,
-            true,
-            maxRelativeError,
-            pctMaxDiff1,
-            pctMaxDiffN);
-}
-
-void compareIndices(
-        faiss::Index& refIndex,
-        faiss::Index& testIndex,
-        int numQuery,
-        int dim,
-        int k,
-        const std::string& configMsg,
-        float maxRelativeError,
-        float pctMaxDiff1,
-        float pctMaxDiffN) {
-    auto queryVecs = faiss::gpu::randVecs(numQuery, dim);
-
-    compareIndices(
-            queryVecs,
-            refIndex,
-            testIndex,
-            numQuery,
-            dim,
-            k,
-            configMsg,
-            maxRelativeError,
-            pctMaxDiff1,
-            pctMaxDiffN);
-}
-
-template <typename T>
-inline T lookup(const T* p, int i, int j, int /*dim1*/, int dim2) {
-    return p[i * dim2 + j];
-}
-
-void compareLists(
-        const float* refDist,
-        const faiss::Index::idx_t* refInd,
-        const float* testDist,
-        const faiss::Index::idx_t* testInd,
-        int dim1,
-        int dim2,
-        const std::string& configMsg,
-        bool printBasicStats,
-        bool printDiffs,
-        bool assertOnErr,
-        float maxRelativeError,
-        float pctMaxDiff1,
-        float pctMaxDiffN) {
-    float maxAbsErr = 0.0f;
-    for (int i = 0; i < dim1 * dim2; ++i) {
-        maxAbsErr = std::max(maxAbsErr, std::abs(refDist[i] - testDist[i]));
-    }
-    int numResults = dim1 * dim2;
-
-    // query -> {index -> result position}
-    std::vector<std::unordered_map<faiss::Index::idx_t, int>> refIndexMap;
-
-    for (int query = 0; query < dim1; ++query) {
-        std::unordered_map<faiss::Index::idx_t, int> indices;
-
-        for (int result = 0; result < dim2; ++result) {
-            indices[lookup(refInd, query, result, dim1, dim2)] = result;
-        }
-
-        refIndexMap.emplace_back(std::move(indices));
-    }
-
-    // See how far off the indices are
-    // Keep track of the difference for each entry
-    std::vector<std::vector<int>> indexDiffs;
-
-    int diff1 = 0;   // index differs by 1
-    int diffN = 0;   // index differs by >1
-    int diffInf = 0; // index not found in the other
-    int nonUniqueIndices = 0;
-
-    double avgDiff = 0.0;
-    int maxDiff = 0;
-    float maxRelErr = 0.0f;
-
-    for (int query = 0; query < dim1; ++query) {
-        std::vector<int> diffs;
-        std::set<faiss::Index::idx_t> uniqueIndices;
-
-        auto& indices = refIndexMap[query];
-
-        for (int result = 0; result < dim2; ++result) {
-            auto t = lookup(testInd, query, result, dim1, dim2);
-
-            // All indices reported within a query should be unique; this is
-            // a serious error if is otherwise the case.
-            // If -1 is reported (no result due to IVF partitioning or not
-            // enough entries in the index), then duplicates are allowed, but
-            // both the reference and test must have -1 in the same position.
-            if (t == -1) {
-                EXPECT_EQ(lookup(refInd, query, result, dim1, dim2), t);
-            } else {
-                bool uniqueIndex = uniqueIndices.count(t) == 0;
-                if (assertOnErr) {
-                    EXPECT_TRUE(uniqueIndex) << configMsg << " " << query << " "
-                                             << result << " " << t;
-                }
-
-                if (!uniqueIndex) {
-                    ++nonUniqueIndices;
-                } else {
-                    uniqueIndices.insert(t);
-                }
-
-                auto it = indices.find(t);
-                if (it != indices.end()) {
-                    int diff = std::abs(result - it->second);
-                    diffs.push_back(diff);
-
-                    if (diff == 1) {
-                        ++diff1;
-                        maxDiff = std::max(diff, maxDiff);
-                    } else if (diff > 1) {
-                        ++diffN;
-                        maxDiff = std::max(diff, maxDiff);
-                    }
-
-                    avgDiff += (double)diff;
-                } else {
-                    ++diffInf;
-                    diffs.push_back(-1);
-                    // don't count this for maxDiff
-                }
-            }
-
-            auto refD = lookup(refDist, query, result, dim1, dim2);
-            auto testD = lookup(testDist, query, result, dim1, dim2);
-
-            float relErr = relativeError(refD, testD);
-
-            if (assertOnErr) {
-                EXPECT_LE(relErr, maxRelativeError)
-                        << configMsg << " (" << query << ", " << result
-                        << ") refD: " << refD << " testD: " << testD;
-            }
-
-            maxRelErr = std::max(maxRelErr, relErr);
-        }
-
-        indexDiffs.emplace_back(std::move(diffs));
-    }
-
-    if (assertOnErr) {
-        EXPECT_LE(
-                (float)(diff1 + diffN + diffInf),
-                (float)numResults * pctMaxDiff1)
-                << configMsg;
-
-        // Don't count diffInf because that could be diff1 as far as we
-        // know
-        EXPECT_LE((float)diffN, (float)numResults * pctMaxDiffN) << configMsg;
-    }
-
-    avgDiff /= (double)numResults;
-
-    if (printBasicStats) {
-        if (!configMsg.empty()) {
-            printf("Config\n"
-                   "----------------------------\n"
-                   "%s\n",
-                   configMsg.c_str());
-        }
-
-        printf("Result error and differences\n"
-               "----------------------------\n"
-               "max abs diff %.7f rel diff %.7f\n"
-               "idx diff avg: %.5g max: %d\n"
-               "idx diff of 1:      %d (%.3f%% of queries)\n"
-               "idx diff of >1:     %d (%.3f%% of queries)\n"
-               "idx diff not found: %d (%.3f%% of queries)"
-               " [typically a last element inversion]\n"
-               "non-unique indices: %d (a serious error if >0)\n",
-               maxAbsErr,
-               maxRelErr,
-               avgDiff,
-               maxDiff,
-               diff1,
-               100.0f * (float)diff1 / (float)numResults,
-               diffN,
-               100.0f * (float)diffN / (float)numResults,
-               diffInf,
-               100.0f * (float)diffInf / (float)numResults,
-               nonUniqueIndices);
-    }
-
-    if (printDiffs) {
-        printf("differences:\n");
-        printf("==================\n");
-        for (int query = 0; query < dim1; ++query) {
-            for (int result = 0; result < dim2; ++result) {
-                long refI = lookup(refInd, query, result, dim1, dim2);
-                long testI = lookup(testInd, query, result, dim1, dim2);
-
-                if (refI != testI) {
-                    float refD = lookup(refDist, query, result, dim1, dim2);
-                    float testD = lookup(testDist, query, result, dim1, dim2);
-
-                    float maxDist = std::max(refD, testD);
-                    float delta = std::abs(refD - testD);
-
-                    float relErr = delta / maxDist;
-
-                    if (refD == testD) {
-                        printf("(%d, %d [%d]) (ref %ld tst %ld dist ==)\n",
-                               query,
-                               result,
-                               indexDiffs[query][result],
-                               refI,
-                               testI);
-                    } else {
-                        printf("(%d, %d [%d]) (ref %ld tst %ld abs %.8f "
-                               "rel %.8f ref %a tst %a)\n",
-                               query,
-                               result,
-                               indexDiffs[query][result],
-                               refI,
-                               testI,
-                               delta,
-                               relErr,
-                               refD,
-                               testD);
-                    }
-                }
-            }
-        }
-    }
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/test/TestUtils.h b/faiss/gpu_cuda/test/TestUtils.h
deleted file mode 100644
index 29574c38a444eba501cbab130e20a4298741084a..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/TestUtils.h
+++ /dev/null
@@ -1,142 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/Index.h>
-#include <faiss/impl/FaissAssert.h>
-#include <faiss/invlists/InvertedLists.h>
-#include <gtest/gtest.h>
-#include <cstring>
-#include <initializer_list>
-#include <memory>
-#include <string>
-#include <vector>
-
-namespace faiss {
-namespace gpu {
-
-/// Generates and displays a new seed for the test
-void newTestSeed();
-
-/// Uses an explicit seed for the test
-void setTestSeed(long seed);
-
-/// Returns the relative error in difference between a and b
-/// (|a - b| / (0.5 * (|a| + |b|))
-float relativeError(float a, float b);
-
-/// Generates a random integer in the range [a, b]
-int randVal(int a, int b);
-
-/// Generates a random bool
-bool randBool();
-
-/// Select a random value from the given list of values provided as an
-/// initializer_list
-template <typename T>
-T randSelect(std::initializer_list<T> vals) {
-    FAISS_ASSERT(vals.size() > 0);
-    int sel = randVal(0, vals.size());
-
-    int i = 0;
-    for (auto v : vals) {
-        if (i++ == sel) {
-            return v;
-        }
-    }
-
-    // should not get here
-    return *vals.begin();
-}
-
-/// Generates a collection of random vectors in the range [0, 1]
-std::vector<float> randVecs(size_t num, size_t dim);
-
-/// Generates a collection of random bit vectors
-std::vector<unsigned char> randBinaryVecs(size_t num, size_t dim);
-
-/// Compare two indices via query for similarity, with a user-specified set of
-/// query vectors
-void compareIndices(
-        const std::vector<float>& queryVecs,
-        faiss::Index& refIndex,
-        faiss::Index& testIndex,
-        int numQuery,
-        int dim,
-        int k,
-        const std::string& configMsg,
-        float maxRelativeError = 6e-5f,
-        float pctMaxDiff1 = 0.1f,
-        float pctMaxDiffN = 0.005f);
-
-/// Compare two indices via query for similarity, generating random query
-/// vectors
-void compareIndices(
-        faiss::Index& refIndex,
-        faiss::Index& testIndex,
-        int numQuery,
-        int dim,
-        int k,
-        const std::string& configMsg,
-        float maxRelativeError = 6e-5f,
-        float pctMaxDiff1 = 0.1f,
-        float pctMaxDiffN = 0.005f);
-
-/// Display specific differences in the two (distance, index) lists
-void compareLists(
-        const float* refDist,
-        const faiss::Index::idx_t* refInd,
-        const float* testDist,
-        const faiss::Index::idx_t* testInd,
-        int dim1,
-        int dim2,
-        const std::string& configMsg,
-        bool printBasicStats,
-        bool printDiffs,
-        bool assertOnErr,
-        float maxRelativeError = 6e-5f,
-        float pctMaxDiff1 = 0.1f,
-        float pctMaxDiffN = 0.005f);
-
-/// Compare IVF lists between a CPU and GPU index
-template <typename A, typename B>
-void testIVFEquality(A& cpuIndex, B& gpuIndex) {
-    // Ensure equality of the inverted lists
-    EXPECT_EQ(cpuIndex.nlist, gpuIndex.nlist);
-
-    for (int i = 0; i < cpuIndex.nlist; ++i) {
-        auto cpuLists = cpuIndex.invlists;
-
-        // Code equality
-        EXPECT_EQ(cpuLists->list_size(i), gpuIndex.getListLength(i));
-        std::vector<uint8_t> cpuCodes(
-                cpuLists->list_size(i) * cpuLists->code_size);
-
-        auto sc = faiss::InvertedLists::ScopedCodes(cpuLists, i);
-        std::memcpy(
-                cpuCodes.data(),
-                sc.get(),
-                cpuLists->list_size(i) * cpuLists->code_size);
-
-        auto gpuCodes = gpuIndex.getListVectorData(i, false);
-        EXPECT_EQ(cpuCodes, gpuCodes);
-
-        // Index equality
-        std::vector<Index::idx_t> cpuIndices(cpuLists->list_size(i));
-
-        auto si = faiss::InvertedLists::ScopedIds(cpuLists, i);
-        std::memcpy(
-                cpuIndices.data(),
-                si.get(),
-                cpuLists->list_size(i) * sizeof(faiss::Index::idx_t));
-        EXPECT_EQ(cpuIndices, gpuIndex.getListIndices(i));
-    }
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/test/demo_ivfpq_indexing_gpu.cpp b/faiss/gpu_cuda/test/demo_ivfpq_indexing_gpu.cpp
deleted file mode 100644
index b32c3a40b0857dceddacb82c0b8f70bf8bb91f6e..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/demo_ivfpq_indexing_gpu.cpp
+++ /dev/null
@@ -1,158 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <cmath>
-#include <cstdio>
-#include <cstdlib>
-#include <random>
-
-#include <sys/time.h>
-
-#include <faiss/gpu/GpuIndexIVFPQ.h>
-#include <faiss/gpu/StandardGpuResources.h>
-
-#include <faiss/gpu/GpuAutoTune.h>
-#include <faiss/index_io.h>
-
-double elapsed() {
-    struct timeval tv;
-    gettimeofday(&tv, NULL);
-    return tv.tv_sec + tv.tv_usec * 1e-6;
-}
-
-int main() {
-    double t0 = elapsed();
-
-    // dimension of the vectors to index
-    int d = 128;
-
-    // size of the database we plan to index
-    size_t nb = 200 * 1000;
-
-    // make a set of nt training vectors in the unit cube
-    // (could be the database)
-    size_t nt = 100 * 1000;
-
-    int dev_no = 0;
-    /*
-    printf ("[%.3f s] Begin d=%d nb=%ld nt=%nt dev_no=%d\n",
-            elapsed() - t0, d, nb, nt, dev_no);
-    */
-    // a reasonable number of centroids to index nb vectors
-    int ncentroids = int(4 * sqrt(nb));
-
-    faiss::gpu::StandardGpuResources resources;
-
-    // the coarse quantizer should not be dealloced before the index
-    // 4 = nb of bytes per code (d must be a multiple of this)
-    // 8 = nb of bits per sub-code (almost always 8)
-    faiss::gpu::GpuIndexIVFPQConfig config;
-    config.device = dev_no;
-
-    faiss::gpu::GpuIndexIVFPQ index(
-            &resources, d, ncentroids, 4, 8, faiss::METRIC_L2, config);
-
-    std::mt19937 rng;
-
-    { // training
-        printf("[%.3f s] Generating %ld vectors in %dD for training\n",
-               elapsed() - t0,
-               nt,
-               d);
-
-        std::vector<float> trainvecs(nt * d);
-        std::uniform_real_distribution<> distrib;
-        for (size_t i = 0; i < nt * d; i++) {
-            trainvecs[i] = distrib(rng);
-        }
-
-        printf("[%.3f s] Training the index\n", elapsed() - t0);
-        index.verbose = true;
-
-        index.train(nt, trainvecs.data());
-    }
-
-    { // I/O demo
-        const char* outfilename = "/tmp/index_trained.faissindex";
-        printf("[%.3f s] storing the pre-trained index to %s\n",
-               elapsed() - t0,
-               outfilename);
-
-        faiss::Index* cpu_index = faiss::gpu::index_gpu_to_cpu(&index);
-
-        write_index(cpu_index, outfilename);
-
-        delete cpu_index;
-    }
-
-    size_t nq;
-    std::vector<float> queries;
-
-    { // populating the database
-        printf("[%.3f s] Building a dataset of %ld vectors to index\n",
-               elapsed() - t0,
-               nb);
-
-        std::vector<float> database(nb * d);
-        std::uniform_real_distribution<> distrib;
-        for (size_t i = 0; i < nb * d; i++) {
-            database[i] = distrib(rng);
-        }
-
-        printf("[%.3f s] Adding the vectors to the index\n", elapsed() - t0);
-
-        index.add(nb, database.data());
-
-        printf("[%.3f s] done\n", elapsed() - t0);
-
-        // remember a few elements from the database as queries
-        int i0 = 1234;
-        int i1 = 1243;
-
-        nq = i1 - i0;
-        queries.resize(nq * d);
-        for (int i = i0; i < i1; i++) {
-            for (int j = 0; j < d; j++) {
-                queries[(i - i0) * d + j] = database[i * d + j];
-            }
-        }
-    }
-
-    { // searching the database
-        int k = 5;
-        printf("[%.3f s] Searching the %d nearest neighbors "
-               "of %ld vectors in the index\n",
-               elapsed() - t0,
-               k,
-               nq);
-
-        std::vector<faiss::Index::idx_t> nns(k * nq);
-        std::vector<float> dis(k * nq);
-
-        index.search(nq, queries.data(), k, dis.data(), nns.data());
-
-        printf("[%.3f s] Query results (vector ids, then distances):\n",
-               elapsed() - t0);
-
-        for (int i = 0; i < nq; i++) {
-            printf("query %2d: ", i);
-            for (int j = 0; j < k; j++) {
-                printf("%7ld ", nns[j + i * k]);
-            }
-            printf("\n     dis: ");
-            for (int j = 0; j < k; j++) {
-                printf("%7g ", dis[j + i * k]);
-            }
-            printf("\n");
-        }
-
-        printf("note that the nearest neighbor is not at "
-               "distance 0 due to quantization errors\n");
-    }
-
-    return 0;
-}
diff --git a/faiss/gpu_cuda/test/test_contrib.py b/faiss/gpu_cuda/test/test_contrib.py
deleted file mode 100644
index 51d11469ce5ecde44f011920d2b0a7d45110615f..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/test_contrib.py
+++ /dev/null
@@ -1,63 +0,0 @@
-# Copyright (c) Facebook, Inc. and its affiliates.
-#
-# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree.
-
-import faiss
-import unittest
-import numpy as np
-
-from faiss.contrib import datasets
-from faiss.contrib.exhaustive_search import knn_ground_truth, range_ground_truth
-from faiss.contrib import evaluation
-
-
-from common_faiss_tests import get_dataset_2
-
-
-class TestComputeGT(unittest.TestCase):
-
-    def test_compute_GT(self):
-        d = 64
-        xt, xb, xq = get_dataset_2(d, 0, 10000, 100)
-
-        index = faiss.IndexFlatL2(d)
-        index.add(xb)
-        Dref, Iref = index.search(xq, 10)
-
-        # iterator function on the matrix
-
-        def matrix_iterator(xb, bs):
-            for i0 in range(0, xb.shape[0], bs):
-                yield xb[i0:i0 + bs]
-
-        Dnew, Inew = knn_ground_truth(xq, matrix_iterator(xb, 1000), 10)
-
-        np.testing.assert_array_equal(Iref, Inew)
-        np.testing.assert_almost_equal(Dref, Dnew, decimal=4)
-
-    def do_test_range(self, metric):
-        ds = datasets.SyntheticDataset(32, 0, 1000, 10)
-        xq = ds.get_queries()
-        xb = ds.get_database()
-        D, I = faiss.knn(xq, xb, 10, metric=metric)
-        threshold = float(D[:, -1].mean())
-
-        index = faiss.IndexFlat(32, metric)
-        index.add(xb)
-        ref_lims, ref_D, ref_I = index.range_search(xq, threshold)
-
-        new_lims, new_D, new_I = range_ground_truth(
-            xq, ds.database_iterator(bs=100), threshold,
-            metric_type=metric)
-
-        evaluation.test_ref_range_results(
-            ref_lims, ref_D, ref_I,
-            new_lims, new_D, new_I
-        )
-
-    def test_range_L2(self):
-        self.do_test_range(faiss.METRIC_L2)
-
-    def test_range_IP(self):
-        self.do_test_range(faiss.METRIC_INNER_PRODUCT)
diff --git a/faiss/gpu_cuda/test/test_gpu_basics.py b/faiss/gpu_cuda/test/test_gpu_basics.py
deleted file mode 100755
index f8041973d11ee86b1bf532cb1795182ce43983e3..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/test_gpu_basics.py
+++ /dev/null
@@ -1,426 +0,0 @@
-# Copyright (c) Facebook, Inc. and its affiliates.
-#
-# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree.
-
-from __future__ import absolute_import, division, print_function, unicode_literals
-
-import unittest
-import numpy as np
-import faiss
-from common_faiss_tests import get_dataset_2
-
-class ReferencedObject(unittest.TestCase):
-
-    d = 16
-    xb = np.random.rand(256, d).astype('float32')
-    nlist = 128
-
-    d_bin = 256
-    xb_bin = np.random.randint(256, size=(10000, d_bin // 8)).astype('uint8')
-    xq_bin = np.random.randint(256, size=(1000, d_bin // 8)).astype('uint8')
-
-    def test_proxy(self):
-        index = faiss.IndexReplicas()
-        for _i in range(3):
-            sub_index = faiss.IndexFlatL2(self.d)
-            sub_index.add(self.xb)
-            index.addIndex(sub_index)
-        assert index.d == self.d
-        index.search(self.xb, 10)
-
-    def test_resources(self):
-        # this used to crash!
-        index = faiss.index_cpu_to_gpu(faiss.StandardGpuResources(), 0,
-                                       faiss.IndexFlatL2(self.d))
-        index.add(self.xb)
-
-    def test_flat(self):
-        index = faiss.GpuIndexFlat(faiss.StandardGpuResources(),
-                                   self.d, faiss.METRIC_L2)
-        index.add(self.xb)
-
-    def test_ivfflat(self):
-        index = faiss.GpuIndexIVFFlat(
-            faiss.StandardGpuResources(),
-            self.d, self.nlist, faiss.METRIC_L2)
-        index.train(self.xb)
-
-    def test_ivfpq(self):
-        index_cpu = faiss.IndexIVFPQ(
-            faiss.IndexFlatL2(self.d),
-            self.d, self.nlist, 2, 8)
-        # speed up test
-        index_cpu.pq.cp.niter = 2
-        index_cpu.do_polysemous_training = False
-        index_cpu.train(self.xb)
-
-        index = faiss.GpuIndexIVFPQ(
-            faiss.StandardGpuResources(), index_cpu)
-        index.add(self.xb)
-
-    def test_binary_flat(self):
-        k = 10
-
-        index_ref = faiss.IndexBinaryFlat(self.d_bin)
-        index_ref.add(self.xb_bin)
-        D_ref, I_ref = index_ref.search(self.xq_bin, k)
-
-        index = faiss.GpuIndexBinaryFlat(faiss.StandardGpuResources(),
-                                         self.d_bin)
-        index.add(self.xb_bin)
-        D, I = index.search(self.xq_bin, k)
-
-        for d_ref, i_ref, d_new, i_new in zip(D_ref, I_ref, D, I):
-            # exclude max distance
-            assert d_ref.max() == d_new.max()
-            dmax = d_ref.max()
-
-            # sort by (distance, id) pairs to be reproducible
-            ref = [(d, i) for d, i in zip(d_ref, i_ref) if d < dmax]
-            ref.sort()
-
-            new = [(d, i) for d, i in zip(d_new, i_new) if d < dmax]
-            new.sort()
-
-            assert ref == new
-
-    def test_stress(self):
-        # a mixture of the above, from issue #631
-        target = np.random.rand(50, 16).astype('float32')
-
-        index = faiss.IndexReplicas()
-        size, dim = target.shape
-        num_gpu = 4
-        for _i in range(num_gpu):
-            config = faiss.GpuIndexFlatConfig()
-            config.device = 0   # simulate on a single GPU
-            sub_index = faiss.GpuIndexFlatIP(faiss.StandardGpuResources(), dim, config)
-            index.addIndex(sub_index)
-
-        index = faiss.IndexIDMap(index)
-        ids = np.arange(size)
-        index.add_with_ids(target, ids)
-
-
-
-class TestGPUKmeans(unittest.TestCase):
-
-    def test_kmeans(self):
-        d = 32
-        nb = 1000
-        k = 10
-        rs = np.random.RandomState(123)
-        xb = rs.rand(nb, d).astype('float32')
-
-        km1 = faiss.Kmeans(d, k)
-        obj1 = km1.train(xb)
-
-        km2 = faiss.Kmeans(d, k, gpu=True)
-        obj2 = km2.train(xb)
-
-        print(obj1, obj2)
-        assert np.allclose(obj1, obj2)
-
-    def test_progressive_dim(self):
-        d = 32
-        n = 10000
-        k = 50
-        xt, _, _ = get_dataset_2(d, n, 0, 0)
-
-        # basic kmeans
-        kmeans = faiss.Kmeans(d, k, gpu=True)
-        kmeans.train(xt)
-
-        pca = faiss.PCAMatrix(d, d)
-        pca.train(xt)
-        xt_pca = pca.apply(xt)
-
-        # same test w/ Kmeans wrapper
-        kmeans2 = faiss.Kmeans(d, k, progressive_dim_steps=5, gpu=True)
-        kmeans2.train(xt_pca)
-        self.assertLess(kmeans2.obj[-1], kmeans.obj[-1])
-
-
-class TestAlternativeDistances(unittest.TestCase):
-
-    def do_test(self, metric, metric_arg=0):
-        res = faiss.StandardGpuResources()
-        d = 32
-        nb = 1000
-        nq = 100
-
-        rs = np.random.RandomState(123)
-        xb = rs.rand(nb, d).astype('float32')
-        xq = rs.rand(nq, d).astype('float32')
-
-        index_ref = faiss.IndexFlat(d, metric)
-        index_ref.metric_arg = metric_arg
-        index_ref.add(xb)
-        Dref, Iref = index_ref.search(xq, 10)
-
-        # build from other index
-        index = faiss.GpuIndexFlat(res, index_ref)
-        Dnew, Inew = index.search(xq, 10)
-        np.testing.assert_array_equal(Inew, Iref)
-        np.testing.assert_allclose(Dnew, Dref, rtol=1e-6)
-
-        #  build from scratch
-        index = faiss.GpuIndexFlat(res, d, metric)
-        index.metric_arg = metric_arg
-        index.add(xb)
-
-        Dnew, Inew = index.search(xq, 10)
-        np.testing.assert_array_equal(Inew, Iref)
-
-    def test_L1(self):
-        self.do_test(faiss.METRIC_L1)
-
-    def test_Linf(self):
-        self.do_test(faiss.METRIC_Linf)
-
-    def test_Lp(self):
-        self.do_test(faiss.METRIC_Lp, 0.7)
-
-
-class TestGpuRef(unittest.TestCase):
-
-    def test_gpu_ref(self):
-        # this crashes
-        dim = 256
-        training_data = np.random.randint(256, size=(10000, dim // 8)).astype('uint8')
-        centroids = 330
-
-        def create_cpu(dim):
-            quantizer = faiss.IndexBinaryFlat(dim)
-            return faiss.IndexBinaryIVF(quantizer, dim, centroids)
-
-        def create_gpu(dim):
-            gpu_quantizer = faiss.index_cpu_to_all_gpus(faiss.IndexFlatL2(dim))
-
-            index = create_cpu(dim)
-            index.clustering_index = gpu_quantizer
-            index.dont_dealloc_me = gpu_quantizer
-            return index
-
-        index = create_gpu(dim)
-
-        index.verbose = True
-        index.cp.verbose = True
-
-        index.train(training_data)
-
-def make_t(num, d, clamp=False, seed=None):
-    rs = None
-    if seed is None:
-        rs = np.random.RandomState(123)
-    else:
-        rs = np.random.RandomState(seed)
-
-    x = rs.rand(num, d).astype(np.float32)
-    if clamp:
-        x = (x * 255).astype('uint8').astype('float32')
-    return x
-
-class TestKnn(unittest.TestCase):
-    def test_input_types(self):
-        d = 33
-        k = 5
-        nb = 1000
-        nq = 10
-
-        xs = make_t(nb, d)
-        qs = make_t(nq, d)
-
-        res = faiss.StandardGpuResources()
-
-        # Get ground truth using IndexFlat
-        index = faiss.IndexFlatL2(d)
-        index.add(xs)
-        ref_d, ref_i = index.search(qs, k)
-
-        out_d = np.empty((nq, k), dtype=np.float32)
-        out_i = np.empty((nq, k), dtype=np.int64)
-
-        # Try f32 data/queries, i64 out indices
-        params = faiss.GpuDistanceParams()
-        params.k = k
-        params.dims = d
-        params.vectors = faiss.swig_ptr(xs)
-        params.numVectors = nb
-        params.queries = faiss.swig_ptr(qs)
-        params.numQueries = nq
-        params.outDistances = faiss.swig_ptr(out_d)
-        params.outIndices = faiss.swig_ptr(out_i)
-
-        faiss.bfKnn(res, params)
-
-        self.assertTrue(np.allclose(ref_d, out_d, atol=1e-5))
-        self.assertGreaterEqual((out_i == ref_i).sum(), ref_i.size)
-
-        # Try int32 out indices
-        out_i32 = np.empty((nq, k), dtype=np.int32)
-        params.outIndices = faiss.swig_ptr(out_i32)
-        params.outIndicesType = faiss.IndicesDataType_I32
-
-        faiss.bfKnn(res, params)
-        self.assertEqual((out_i32 == ref_i).sum(), ref_i.size)
-
-        # Try float16 data/queries, i64 out indices
-        xs_f16 = xs.astype(np.float16)
-        qs_f16 = qs.astype(np.float16)
-        xs_f16_f32 = xs_f16.astype(np.float32)
-        qs_f16_f32 = qs_f16.astype(np.float32)
-        index.reset()
-        index.add(xs_f16_f32)
-        ref_d_f16, ref_i_f16 = index.search(qs_f16_f32, k)
-
-        params.vectors = faiss.swig_ptr(xs_f16)
-        params.vectorType = faiss.DistanceDataType_F16
-        params.queries = faiss.swig_ptr(qs_f16)
-        params.queryType = faiss.DistanceDataType_F16
-
-        out_d_f16 = np.empty((nq, k), dtype=np.float32)
-        out_i_f16 = np.empty((nq, k), dtype=np.int64)
-
-        params.outDistances = faiss.swig_ptr(out_d_f16)
-        params.outIndices = faiss.swig_ptr(out_i_f16)
-        params.outIndicesType = faiss.IndicesDataType_I64
-
-        faiss.bfKnn(res, params)
-
-        self.assertGreaterEqual((out_i_f16 == ref_i_f16).sum(), ref_i_f16.size - 5)
-        self.assertTrue(np.allclose(ref_d_f16, out_d_f16, atol = 2e-3))
-
-class TestAllPairwiseDistance(unittest.TestCase):
-    def test_dist(self):
-        metrics = [
-            faiss.METRIC_L2,
-            faiss.METRIC_INNER_PRODUCT,
-            faiss.METRIC_L1,
-            faiss.METRIC_Linf,
-            faiss.METRIC_Canberra,
-            faiss.METRIC_BrayCurtis,
-            faiss.METRIC_JensenShannon
-        ]
-
-        for metric in metrics:
-            print(metric)
-            d = 33
-            k = 500
-
-            # all pairwise distance should be the same as nb = k
-            nb = k
-            nq = 20
-
-            xs = make_t(nb, d)
-            qs = make_t(nq, d)
-
-            res = faiss.StandardGpuResources()
-
-            # Get ground truth using IndexFlat
-            index = faiss.IndexFlat(d, metric)
-            index.add(xs)
-            ref_d, _ = index.search(qs, k)
-
-            out_d = np.empty((nq, k), dtype=np.float32)
-
-            # Try f32 data/queries
-            params = faiss.GpuDistanceParams()
-            params.metric = metric
-            params.k = -1 # all pairwise
-            params.dims = d
-            params.vectors = faiss.swig_ptr(xs)
-            params.numVectors = nb
-            params.queries = faiss.swig_ptr(qs)
-            params.numQueries = nq
-            params.outDistances = faiss.swig_ptr(out_d)
-
-            faiss.bfKnn(res, params)
-
-            # IndexFlat will sort the results, so we need to
-            # do the same on our end
-            out_d = np.sort(out_d, axis=1)
-
-            # INNER_PRODUCT is in descending order, make sure it is the same
-            # order
-            if metric == faiss.METRIC_INNER_PRODUCT:
-                ref_d = np.sort(ref_d, axis=1)
-
-            print('f32', np.abs(ref_d - out_d).max())
-
-            self.assertTrue(np.allclose(ref_d, out_d, atol=1e-5))
-
-            # Try float16 data/queries
-            xs_f16 = xs.astype(np.float16)
-            qs_f16 = qs.astype(np.float16)
-            xs_f16_f32 = xs_f16.astype(np.float32)
-            qs_f16_f32 = qs_f16.astype(np.float32)
-            index.reset()
-            index.add(xs_f16_f32)
-            ref_d_f16, _ = index.search(qs_f16_f32, k)
-
-            params.vectors = faiss.swig_ptr(xs_f16)
-            params.vectorType = faiss.DistanceDataType_F16
-            params.queries = faiss.swig_ptr(qs_f16)
-            params.queryType = faiss.DistanceDataType_F16
-
-            out_d_f16 = np.empty((nq, k), dtype=np.float32)
-            params.outDistances = faiss.swig_ptr(out_d_f16)
-
-            faiss.bfKnn(res, params)
-
-            # IndexFlat will sort the results, so we need to
-            # do the same on our end
-            out_d_f16 = np.sort(out_d_f16, axis=1)
-
-            # INNER_PRODUCT is in descending order, make sure it is the same
-            # order
-            if metric == faiss.METRIC_INNER_PRODUCT:
-                ref_d_f16 = np.sort(ref_d_f16, axis=1)
-
-            print('f16', np.abs(ref_d_f16 - out_d_f16).max())
-
-            self.assertTrue(np.allclose(ref_d_f16, out_d_f16, atol = 4e-3))
-
-
-
-def eval_codec(q, xb):
-    codes = q.compute_codes(xb)
-    decoded = q.decode(codes)
-    return ((xb - decoded) ** 2).sum()
-
-
-class TestResidualQuantizer(unittest.TestCase):
-
-    def test_with_gpu(self):
-        """ check that we get the same resutls with a GPU quantizer and a CPU quantizer """
-        d = 32
-        nt = 3000
-        nb = 1000
-        xt, xb, _ = get_dataset_2(d, nt, nb, 0)
-
-        rq0 = faiss.ResidualQuantizer(d, 4, 6)
-        rq0.train(xt)
-        err_rq0 = eval_codec(rq0, xb)
-        # codes0 = rq0.compute_codes(xb)
-        rq1 = faiss.ResidualQuantizer(d, 4, 6)
-        fac = faiss.GpuProgressiveDimIndexFactory(1)
-        rq1.assign_index_factory = fac
-        rq1.train(xt)
-        self.assertGreater(fac.ncall, 0)
-        ncall_train = fac.ncall
-        err_rq1 = eval_codec(rq1, xb)
-        # codes1 = rq1.compute_codes(xb)
-        self.assertGreater(fac.ncall, ncall_train)
-
-        print(err_rq0, err_rq1)
-
-        self.assertTrue(0.9 * err_rq0 < err_rq1 < 1.1 * err_rq0)
-
-        # np.testing.assert_array_equal(codes0, codes1)
-
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/faiss/gpu_cuda/test/test_gpu_index.py b/faiss/gpu_cuda/test/test_gpu_index.py
deleted file mode 100755
index 937ef0660985ad913d1efa46b4eabdcad855ea18..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/test_gpu_index.py
+++ /dev/null
@@ -1,506 +0,0 @@
-# Copyright (c) Facebook, Inc. and its affiliates.
-#
-# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree.
-
-from __future__ import absolute_import, division, print_function, unicode_literals
-
-import math
-import time
-import unittest
-import numpy as np
-import faiss
-from faiss.contrib import datasets
-
-class EvalIVFPQAccuracy(unittest.TestCase):
-
-    def get_dataset(self, small_one=False):
-        if not small_one:
-            d = 128
-            nb = 100000
-            nt = 15000
-            nq = 2000
-        else:
-            d = 32
-            nb = 10000
-            nt = 1000
-            nq = 200
-        np.random.seed(123)
-
-        # generate points in a low-dim subspace to make the resutls
-        # look better :-)
-        d1 = 16
-        q, r = np.linalg.qr(np.random.randn(d, d))
-        qc = q[:d1, :]
-        def make_mat(n):
-            return np.dot(
-                np.random.random(size=(nb, d1)), qc).astype('float32')
-
-        return (make_mat(nt), make_mat(nb), make_mat(nq))
-
-
-    def test_mm(self):
-        # trouble with MKL+fbmake that appears only at runtime. Check it here
-        x = np.random.random(size=(100, 20)).astype('float32')
-        mat = faiss.PCAMatrix(20, 10)
-        mat.train(x)
-        mat.apply_py(x)
-
-    def do_cpu_to_gpu(self, index_key):
-        ts = []
-        ts.append(time.time())
-        (xt, xb, xq) = self.get_dataset(small_one=True)
-        nb, d = xb.shape
-
-        index = faiss.index_factory(d, index_key)
-        if index.__class__ == faiss.IndexIVFPQ:
-            # speed up test
-            index.pq.cp.niter = 2
-            index.do_polysemous_training = False
-        ts.append(time.time())
-
-        index.train(xt)
-        ts.append(time.time())
-
-        # adding some ids because there was a bug in this case;
-        # those need to be cast to idx_t(= int64_t), because
-        # on windows the numpy int default is int32
-        ids = (np.arange(nb) * 3 + 12345).astype('int64')
-        index.add_with_ids(xb, ids)
-        ts.append(time.time())
-
-        index.nprobe = 4
-        Dref, Iref = index.search(xq, 10)
-        ts.append(time.time())
-
-        res = faiss.StandardGpuResources()
-        gpu_index = faiss.index_cpu_to_gpu(res, 0, index)
-        ts.append(time.time())
-
-        # Validate the layout of the memory info
-        mem_info = res.getMemoryInfo()
-
-        assert type(mem_info) == dict
-        assert type(mem_info[0]['FlatData']) == tuple
-        assert type(mem_info[0]['FlatData'][0]) == int
-        assert type(mem_info[0]['FlatData'][1]) == int
-
-        gpu_index.setNumProbes(4)
-
-        Dnew, Inew = gpu_index.search(xq, 10)
-        ts.append(time.time())
-        print('times:', [t - ts[0] for t in ts])
-
-        # Give us some margin of error
-        self.assertGreaterEqual((Iref == Inew).sum(), Iref.size - 50)
-
-        if faiss.get_num_gpus() == 1:
-            return
-
-        for shard in False, True:
-
-            # test on just 2 GPUs
-            res = [faiss.StandardGpuResources() for i in range(2)]
-            co = faiss.GpuMultipleClonerOptions()
-            co.shard = shard
-
-            gpu_index = faiss.index_cpu_to_gpu_multiple_py(res, index, co)
-
-            faiss.GpuParameterSpace().set_index_parameter(
-                gpu_index, 'nprobe', 4)
-
-            Dnew, Inew = gpu_index.search(xq, 10)
-
-            # 0.99: allow some tolerance in results otherwise test
-            # fails occasionally (not reproducible)
-            self.assertGreaterEqual((Iref == Inew).sum(), Iref.size * 0.99)
-
-    def test_cpu_to_gpu_IVFPQ(self):
-        self.do_cpu_to_gpu('IVF128,PQ4')
-
-    def test_cpu_to_gpu_IVFFlat(self):
-        self.do_cpu_to_gpu('IVF128,Flat')
-
-    def test_set_gpu_param(self):
-        index = faiss.index_factory(12, "PCAR8,IVF10,PQ4")
-        res = faiss.StandardGpuResources()
-        gpu_index = faiss.index_cpu_to_gpu(res, 0, index)
-        faiss.GpuParameterSpace().set_index_parameter(gpu_index, "nprobe", 3)
-
-
-
-class TestShardedFlat(unittest.TestCase):
-
-    @unittest.skipIf(faiss.get_num_gpus() < 2, "Relevant for multiple GPU only.")
-    def test_sharded(self):
-        d = 32
-        nb = 1000
-        nq = 200
-        k = 10
-        rs = np.random.RandomState(123)
-        xb = rs.rand(nb, d).astype('float32')
-        xq = rs.rand(nq, d).astype('float32')
-
-        index_cpu = faiss.IndexFlatL2(d)
-
-        assert faiss.get_num_gpus() > 1
-
-        co = faiss.GpuMultipleClonerOptions()
-        co.shard = True
-        index = faiss.index_cpu_to_all_gpus(index_cpu, co, ngpu=2)
-
-        index.add(xb)
-        D, I = index.search(xq, k)
-
-        index_cpu.add(xb)
-        D_ref, I_ref = index_cpu.search(xq, k)
-
-        assert np.all(I == I_ref)
-
-        del index
-        index2 = faiss.index_cpu_to_all_gpus(index_cpu, co, ngpu=2)
-        D2, I2 = index2.search(xq, k)
-
-        assert np.all(I2 == I_ref)
-
-        try:
-            index2.add(xb)
-        except RuntimeError:
-            pass
-        else:
-            assert False, "this call should fail!"
-
-
-
-
-class TestInterleavedIVFPQLayout(unittest.TestCase):
-    def test_interleaved(self):
-        res = faiss.StandardGpuResources()
-
-        for bits_per_code in [4, 5, 6, 8]:
-            d = 128
-            nb = 10000
-            nq = 20
-
-            rs = np.random.RandomState(123)
-            xb = rs.rand(nb, d).astype('float32')
-            xq = rs.rand(nq, d).astype('float32')
-
-            nlist = int(math.sqrt(nb))
-            sub_q = 16
-            nprobe = 16
-
-            config = faiss.GpuIndexIVFPQConfig()
-            config.interleavedLayout = True
-            idx_gpu = faiss.GpuIndexIVFPQ(res, d, nlist, sub_q, bits_per_code, faiss.METRIC_L2, config)
-            q = faiss.IndexFlatL2(d)
-            idx_cpu = faiss.IndexIVFPQ(q, d, nlist, sub_q, bits_per_code, faiss.METRIC_L2)
-
-            idx_gpu.train(xb)
-            idx_gpu.add(xb)
-            idx_gpu.copyTo(idx_cpu)
-
-            idx_gpu.nprobe = nprobe
-            idx_cpu.nprobe = nprobe
-
-            k = 20
-
-            # Try without precomputed codes
-            d_g, i_g = idx_gpu.search(xq, k)
-            d_c, i_c = idx_cpu.search(xq, k)
-            self.assertGreaterEqual((i_g == i_c).sum(), i_g.size * 0.9)
-            self.assertTrue(np.allclose(d_g, d_c, rtol=5e-5, atol=5e-5))
-
-            # Try with precomputed codes (different kernel)
-            idx_gpu.setPrecomputedCodes(True)
-            d_g, i_g = idx_gpu.search(xq, k)
-            d_c, i_c = idx_cpu.search(xq, k)
-            self.assertGreaterEqual((i_g == i_c).sum(), i_g.size * 0.9)
-            self.assertTrue(np.allclose(d_g, d_c, rtol=5e-5, atol=5e-5))
-
-    def test_copy_to_cpu(self):
-        res = faiss.StandardGpuResources()
-
-        for bits_per_code in [4, 5, 6, 8]:
-            d = 128
-            nb = 10000
-            nq = 20
-
-            rs = np.random.RandomState(234)
-            xb = rs.rand(nb, d).astype('float32')
-            xq = rs.rand(nq, d).astype('float32')
-
-            nlist = int(math.sqrt(nb))
-            sub_q = 16
-            bits_per_code = 8
-            nprobe = 4
-
-            config = faiss.GpuIndexIVFPQConfig()
-            config.interleavedLayout = True
-            idx_gpu = faiss.GpuIndexIVFPQ(res, d, nlist, sub_q, bits_per_code, faiss.METRIC_L2, config)
-            q = faiss.IndexFlatL2(d)
-            idx_cpu = faiss.IndexIVFPQ(q, d, nlist, sub_q, bits_per_code, faiss.METRIC_L2)
-
-            idx_gpu.train(xb)
-            idx_gpu.add(xb)
-
-            idx_gpu.copyTo(idx_cpu)
-
-            idx_gpu.nprobe = nprobe
-            idx_cpu.nprobe = nprobe
-
-            # Try without precomputed codes
-            d_g, i_g = idx_gpu.search(xq, 10)
-            d_c, i_c = idx_cpu.search(xq, 10)
-            self.assertGreaterEqual((i_g == i_c).sum(), i_g.size * 0.9)
-            self.assertTrue(np.allclose(d_g, d_c))
-
-            # Try with precomputed codes (different kernel)
-            idx_gpu.setPrecomputedCodes(True)
-            d_g, i_g = idx_gpu.search(xq, 10)
-            d_c, i_c = idx_cpu.search(xq, 10)
-            self.assertGreaterEqual((i_g == i_c).sum(), i_g.size * 0.9)
-            self.assertTrue(np.allclose(d_g, d_c))
-
-    def test_copy_to_gpu(self):
-        res = faiss.StandardGpuResources()
-
-        for bits_per_code in [4, 5, 6, 8]:
-            d = 128
-            nb = 10000
-            nq = 20
-
-            rs = np.random.RandomState(567)
-            xb = rs.rand(nb, d).astype('float32')
-            xq = rs.rand(nq, d).astype('float32')
-
-            nlist = int(math.sqrt(nb))
-            sub_q = 16
-            bits_per_code = 8
-            nprobe = 4
-
-            config = faiss.GpuIndexIVFPQConfig()
-            config.interleavedLayout = True
-            idx_gpu = faiss.GpuIndexIVFPQ(res, d, nlist, sub_q, bits_per_code, faiss.METRIC_L2, config)
-            q = faiss.IndexFlatL2(d)
-            idx_cpu = faiss.IndexIVFPQ(q, d, nlist, sub_q, bits_per_code, faiss.METRIC_L2)
-
-            idx_cpu.train(xb)
-            idx_cpu.add(xb)
-
-            idx_gpu.copyFrom(idx_cpu)
-
-            idx_gpu.nprobe = nprobe
-            idx_cpu.nprobe = nprobe
-
-            # Try without precomputed codes
-            d_g, i_g = idx_gpu.search(xq, 10)
-            d_c, i_c = idx_cpu.search(xq, 10)
-            self.assertGreaterEqual((i_g == i_c).sum(), i_g.size * 0.9)
-            self.assertTrue(np.allclose(d_g, d_c))
-
-            # Try with precomputed codes (different kernel)
-            idx_gpu.setPrecomputedCodes(True)
-            d_g, i_g = idx_gpu.search(xq, 10)
-            d_c, i_c = idx_cpu.search(xq, 10)
-            self.assertGreaterEqual((i_g == i_c).sum(), i_g.size * 0.9)
-            self.assertTrue(np.allclose(d_g, d_c))
-
-
-# Make sure indices are properly stored in the IVF lists
-class TestIVFIndices(unittest.TestCase):
-    def test_indices_ivfflat(self):
-        res = faiss.StandardGpuResources()
-        d = 128
-        nb = 5000
-        nlist = 10
-
-        rs = np.random.RandomState(567)
-        xb = rs.rand(nb, d).astype('float32')
-        xb_indices_base = np.arange(nb, dtype=np.int64)
-
-        # Force values to not be representable in int32
-        xb_indices = (xb_indices_base + 4294967296).astype('int64')
-
-        config = faiss.GpuIndexIVFFlatConfig()
-        idx = faiss.GpuIndexIVFFlat(res, d, nlist, faiss.METRIC_L2, config)
-        idx.train(xb)
-        idx.add_with_ids(xb, xb_indices)
-
-        _, I = idx.search(xb[10:20], 5)
-        self.assertTrue(np.array_equal(xb_indices[10:20], I[:, 0]))
-
-        # Store values using 32-bit indices instead
-        config.indicesOptions = faiss.INDICES_32_BIT
-        idx = faiss.GpuIndexIVFFlat(res, d, nlist, faiss.METRIC_L2, config)
-        idx.train(xb)
-        idx.add_with_ids(xb, xb_indices)
-
-        _, I = idx.search(xb[10:20], 5)
-        # This will strip the high bit
-        self.assertTrue(np.array_equal(xb_indices_base[10:20], I[:, 0]))
-
-    def test_indices_ivfpq(self):
-        res = faiss.StandardGpuResources()
-        d = 128
-        nb = 5000
-        nlist = 10
-        M = 4
-        nbits = 8
-
-        rs = np.random.RandomState(567)
-        xb = rs.rand(nb, d).astype('float32')
-        xb_indices_base = np.arange(nb, dtype=np.int64)
-
-        # Force values to not be representable in int32
-        xb_indices = (xb_indices_base + 4294967296).astype('int64')
-
-        config = faiss.GpuIndexIVFPQConfig()
-        idx = faiss.GpuIndexIVFPQ(res, d, nlist, M, nbits,
-                                  faiss.METRIC_L2, config)
-        idx.train(xb)
-        idx.add_with_ids(xb, xb_indices)
-
-        _, I = idx.search(xb[10:20], 5)
-        self.assertTrue(np.array_equal(xb_indices[10:20], I[:, 0]))
-
-        # Store values using 32-bit indices instead
-        config.indicesOptions = faiss.INDICES_32_BIT
-        idx = faiss.GpuIndexIVFPQ(res, d, nlist, M, nbits,
-                                  faiss.METRIC_L2, config)
-        idx.train(xb)
-        idx.add_with_ids(xb, xb_indices)
-
-        _, I = idx.search(xb[10:20], 5)
-        # This will strip the high bit
-        self.assertTrue(np.array_equal(xb_indices_base[10:20], I[:, 0]))
-
-    def test_indices_ivfsq(self):
-        res = faiss.StandardGpuResources()
-        d = 128
-        nb = 5000
-        nlist = 10
-        qtype = faiss.ScalarQuantizer.QT_4bit
-
-        rs = np.random.RandomState(567)
-        xb = rs.rand(nb, d).astype('float32')
-        xb_indices_base = np.arange(nb, dtype=np.int64)
-
-        # Force values to not be representable in int32
-        xb_indices = (xb_indices_base + 4294967296).astype('int64')
-
-        config = faiss.GpuIndexIVFScalarQuantizerConfig()
-        idx = faiss.GpuIndexIVFScalarQuantizer(res, d, nlist, qtype,
-                                               faiss.METRIC_L2, True, config)
-        idx.train(xb)
-        idx.add_with_ids(xb, xb_indices)
-
-        _, I = idx.search(xb[10:20], 5)
-        self.assertTrue(np.array_equal(xb_indices[10:20], I[:, 0]))
-
-        # Store values using 32-bit indices instead
-        config.indicesOptions = faiss.INDICES_32_BIT
-        idx = faiss.GpuIndexIVFScalarQuantizer(res, d, nlist, qtype,
-                                               faiss.METRIC_L2, True, config)
-        idx.train(xb)
-        idx.add_with_ids(xb, xb_indices)
-
-        _, I = idx.search(xb[10:20], 5)
-        # This will strip the high bit
-        self.assertTrue(np.array_equal(xb_indices_base[10:20], I[:, 0]))
-
-
-class TestSQ_to_gpu(unittest.TestCase):
-
-    def test_sq_cpu_to_gpu(self):
-        res = faiss.StandardGpuResources()
-        index = faiss.index_factory(32, "SQfp16")
-        index.add(np.random.rand(1000, 32).astype(np.float32))
-        gpu_index = faiss.index_cpu_to_gpu(res, 0, index)
-        self.assertIsInstance(gpu_index, faiss.GpuIndexFlat)
-
-
-class TestInvalidParams(unittest.TestCase):
-
-    def test_indices_ivfpq(self):
-        res = faiss.StandardGpuResources()
-        d = 128
-        nb = 5000
-        nlist = 10
-        M = 4
-        nbits = 8
-
-        rs = np.random.RandomState(567)
-        xb = rs.rand(nb, d).astype('float32')
-        xb_indices_base = np.arange(nb, dtype=np.int64)
-
-        # Force values to not be representable in int32
-        xb_indices = (xb_indices_base + 4294967296).astype('int64')
-
-        config = faiss.GpuIndexIVFPQConfig()
-        idx = faiss.GpuIndexIVFPQ(res, d, nlist, M, nbits,
-                                  faiss.METRIC_L2, config)
-        idx.train(xb)
-        idx.add_with_ids(xb, xb_indices)
-
-        # invalid k (should be > 0)
-        k = -5
-        idx.setNumProbes(3)
-        self.assertRaises(AssertionError, idx.search, xb[10:20], k)
-
-        # invalid nprobe (should be > 0)
-        self.assertRaises(RuntimeError, idx.setNumProbes, 0)
-        self.assertRaises(RuntimeError, idx.setNumProbes, -3)
-
-        k = 5
-        idx.nprobe = -3
-        self.assertRaises(RuntimeError, idx.search, xb[10:20], k)
-
-        # valid params
-        k = 5
-        idx.setNumProbes(3)
-        _, I = idx.search(xb[10:20], k)
-        self.assertTrue(np.array_equal(xb_indices[10:20], I[:, 0]))
-
-
-class TestLSQIcmEncoder(unittest.TestCase):
-
-    @staticmethod
-    def eval_codec(q, xb):
-        codes = q.compute_codes(xb)
-        decoded = q.decode(codes)
-        return ((xb - decoded) ** 2).sum()
-
-    def subtest_gpu_encoding(self, ngpus):
-        """check that the error is in the same as cpu."""
-        ds = datasets.SyntheticDataset(32, 1000, 1000, 0)
-
-        xt = ds.get_train()
-        xb = ds.get_database()
-
-        M = 4
-        nbits = 8
-
-        lsq = faiss.LocalSearchQuantizer(ds.d, M, nbits)
-        lsq.train(xt)
-        err_cpu = self.eval_codec(lsq, xb)
-
-        lsq = faiss.LocalSearchQuantizer(ds.d, M, nbits)
-        lsq.train(xt)
-        lsq.icm_encoder_factory = faiss.GpuIcmEncoderFactory(ngpus)
-        err_gpu = self.eval_codec(lsq, xb)
-
-        # 13804.411 vs 13814.794, 1 gpu
-        print(err_gpu, err_cpu)
-        self.assertLess(err_gpu, err_cpu * 1.05)
-
-    def test_one_gpu(self):
-        self.subtest_gpu_encoding(1)
-
-    def test_multiple_gpu(self):
-        ngpu = faiss.get_num_gpus()
-        self.subtest_gpu_encoding(ngpu)
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/faiss/gpu_cuda/test/test_gpu_index_ivfsq.py b/faiss/gpu_cuda/test/test_gpu_index_ivfsq.py
deleted file mode 100755
index 66b04cacc78225d2047bfbb9d6b4b8acf660b646..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/test_gpu_index_ivfsq.py
+++ /dev/null
@@ -1,221 +0,0 @@
-# Copyright (c) Facebook, Inc. and its affiliates.
-#
-# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree.
-
-from __future__ import print_function
-import unittest
-import numpy as np
-import faiss
-
-def make_t(num, d, clamp=False):
-    rs = np.random.RandomState(123)
-    x = rs.rand(num, d).astype('float32')
-    if clamp:
-        x = (x * 255).astype('uint8').astype('float32')
-    return x
-
-def make_indices_copy_from_cpu(nlist, d, qtype, by_residual, metric, clamp):
-    to_train = make_t(10000, d, clamp)
-
-    quantizer_cp = faiss.IndexFlat(d, metric)
-    idx_cpu = faiss.IndexIVFScalarQuantizer(quantizer_cp, d, nlist,
-                                            qtype, metric, by_residual)
-
-    idx_cpu.train(to_train)
-    idx_cpu.add(to_train)
-
-    res = faiss.StandardGpuResources()
-    res.noTempMemory()
-    idx_gpu = faiss.GpuIndexIVFScalarQuantizer(res, idx_cpu)
-
-    return idx_cpu, idx_gpu
-
-
-def make_indices_copy_from_gpu(nlist, d, qtype, by_residual, metric, clamp):
-    to_train = make_t(10000, d, clamp)
-
-    res = faiss.StandardGpuResources()
-    res.noTempMemory()
-    idx_gpu = faiss.GpuIndexIVFScalarQuantizer(res, d, nlist,
-                                               qtype, metric, by_residual)
-    idx_gpu.train(to_train)
-    idx_gpu.add(to_train)
-
-    quantizer_cp = faiss.IndexFlat(d, metric)
-    idx_cpu = faiss.IndexIVFScalarQuantizer(quantizer_cp, d, nlist,
-                                            qtype, metric, by_residual)
-    idx_gpu.copyTo(idx_cpu)
-
-    return idx_cpu, idx_gpu
-
-
-def make_indices_train(nlist, d, qtype, by_residual, metric, clamp):
-    to_train = make_t(10000, d, clamp)
-
-    quantizer_cp = faiss.IndexFlat(d, metric)
-    idx_cpu = faiss.IndexIVFScalarQuantizer(quantizer_cp, d, nlist,
-                                            qtype, metric, by_residual)
-    assert(by_residual == idx_cpu.by_residual)
-
-    idx_cpu.train(to_train)
-    idx_cpu.add(to_train)
-
-    res = faiss.StandardGpuResources()
-    res.noTempMemory()
-    idx_gpu = faiss.GpuIndexIVFScalarQuantizer(res, d, nlist,
-                                               qtype, metric, by_residual)
-    assert(by_residual == idx_gpu.by_residual)
-
-    idx_gpu.train(to_train)
-    idx_gpu.add(to_train)
-
-    return idx_cpu, idx_gpu
-
-#
-# Testing functions
-#
-
-def summarize_results(dist, idx):
-    valid = []
-    invalid = []
-    for query in range(dist.shape[0]):
-        valid_sub = {}
-        invalid_sub = []
-
-        for order, (d, i) in enumerate(zip(dist[query], idx[query])):
-            if i == -1:
-                invalid_sub.append(order)
-            else:
-                valid_sub[i] = [order, d]
-
-        valid.append(valid_sub)
-        invalid.append(invalid_sub)
-
-    return valid, invalid
-
-def compare_results(d1, i1, d2, i2):
-    # Count number of index differences
-    idx_diffs = {}
-    idx_diffs_inf = 0
-    idx_invalid = 0
-
-    valid1, invalid1 = summarize_results(d1, i1)
-    valid2, invalid2 = summarize_results(d2, i2)
-
-    # Invalid results should be the same for both
-    # (except if we happen to hit different centroids)
-    for inv1, inv2 in zip(invalid1, invalid2):
-        if (len(inv1) != len(inv2)):
-            print('mismatch ', len(inv1), len(inv2), inv2[0])
-
-        assert(len(inv1) == len(inv2))
-        idx_invalid += len(inv2)
-        for x1, x2 in zip(inv1, inv2):
-            assert(x1 == x2)
-
-    for _, (query1, query2) in enumerate(zip(valid1, valid2)):
-        for idx1, order_d1 in query1.items():
-            order_d2 = query2.get(idx1, None)
-            if order_d2:
-                idx_diff = order_d1[0] - order_d2[0]
-
-                if idx_diff not in idx_diffs:
-                    idx_diffs[idx_diff] = 1
-                else:
-                    idx_diffs[idx_diff] += 1
-            else:
-                idx_diffs_inf += 1
-
-    return idx_diffs, idx_diffs_inf, idx_invalid
-
-def check_diffs(total_num, in_window_thresh, diffs, diff_inf, invalid):
-    # We require a certain fraction of results to be within +/- diff_window
-    # index differences
-    diff_window = 4
-    in_window = 0
-
-    for diff in sorted(diffs):
-        if abs(diff) <= diff_window:
-            in_window += diffs[diff] / total_num
-
-    if (in_window < in_window_thresh):
-        print('error {} {}'.format(in_window, in_window_thresh))
-        assert(in_window >= in_window_thresh)
-
-def do_test_with_index(ci, gi, nprobe, k, clamp, in_window_thresh):
-    num_query = 11
-    to_query = make_t(num_query, ci.d, clamp)
-
-    ci.nprobe = ci.nprobe
-    gi.nprobe = gi.nprobe
-
-    total_num = num_query * k
-    check_diffs(total_num, in_window_thresh,
-                *compare_results(*ci.search(to_query, k),
-                                 *gi.search(to_query, k)))
-
-def do_test(nlist, d, qtype, by_residual, metric, nprobe, k):
-    clamp = (qtype == faiss.ScalarQuantizer.QT_8bit_direct)
-    ci, gi = make_indices_copy_from_cpu(nlist, d, qtype,
-                                        by_residual, metric, clamp)
-    # A direct copy should be much more closely in agreement
-    # (except for fp accumulation order differences)
-    do_test_with_index(ci, gi, nprobe, k, clamp, 0.99)
-
-    ci, gi = make_indices_copy_from_gpu(nlist, d, qtype,
-                                        by_residual, metric, clamp)
-    # A direct copy should be much more closely in agreement
-    # (except for fp accumulation order differences)
-    do_test_with_index(ci, gi, nprobe, k, clamp, 0.99)
-
-    ci, gi = make_indices_train(nlist, d, qtype,
-                                by_residual, metric, clamp)
-    # Separate training can produce a slightly different coarse quantizer
-    # and residuals
-    do_test_with_index(ci, gi, nprobe, k, clamp, 0.8)
-
-def do_multi_test(qtype):
-    nlist = 100
-    nprobe = 10
-    k = 50
-
-    for d in [11, 64, 77]:
-        if (qtype != faiss.ScalarQuantizer.QT_8bit_direct):
-            # residual doesn't make sense here
-            do_test(nlist, d, qtype, True,
-                    faiss.METRIC_L2, nprobe, k)
-            do_test(nlist, d, qtype, True,
-                    faiss.METRIC_INNER_PRODUCT, nprobe, k)
-        do_test(nlist, d, qtype, False, faiss.METRIC_L2, nprobe, k)
-        do_test(nlist, d, qtype, False, faiss.METRIC_INNER_PRODUCT, nprobe, k)
-
-#
-# Test
-#
-
-class TestSQ(unittest.TestCase):
-    def test_fp16(self):
-        do_multi_test(faiss.ScalarQuantizer.QT_fp16)
-
-    def test_8bit(self):
-        do_multi_test(faiss.ScalarQuantizer.QT_8bit)
-
-    def test_8bit_uniform(self):
-        do_multi_test(faiss.ScalarQuantizer.QT_8bit_uniform)
-
-    def test_6bit(self):
-        do_multi_test(faiss.ScalarQuantizer.QT_6bit)
-
-    def test_4bit(self):
-        do_multi_test(faiss.ScalarQuantizer.QT_4bit)
-
-    def test_4bit_uniform(self):
-        do_multi_test(faiss.ScalarQuantizer.QT_4bit_uniform)
-
-    def test_8bit_direct(self):
-        do_multi_test(faiss.ScalarQuantizer.QT_8bit_direct)
-
-
-if __name__ == '__main__':
-    unittest.main()
diff --git a/faiss/gpu_cuda/test/torch_test_contrib_gpu.py b/faiss/gpu_cuda/test/torch_test_contrib_gpu.py
deleted file mode 100644
index 1510b10f1d6ecc25092d1c3b371415ae2c17c43a..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/test/torch_test_contrib_gpu.py
+++ /dev/null
@@ -1,432 +0,0 @@
-# Copyright (c) Facebook, Inc. and its affiliates.
-#
-# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree.
-
-import faiss
-import torch
-import unittest
-import numpy as np
-import faiss.contrib.torch_utils
-
-def to_column_major_torch(x):
-    if hasattr(torch, 'contiguous_format'):
-        return x.t().clone(memory_format=torch.contiguous_format).t()
-    else:
-        # was default setting before memory_format was introduced
-        return x.t().clone().t()
-
-def to_column_major_numpy(x):
-    return x.T.copy().T
-
-class TestTorchUtilsGPU(unittest.TestCase):
-    # tests add, search
-    def test_lookup(self):
-        cpu_index = faiss.IndexFlatL2(128)
-
-        # Add to CPU index with np
-        xb_torch = torch.rand(10000, 128)
-        cpu_index.add(xb_torch.numpy())
-
-        # Add to CPU index with torch GPU (should fail)
-        xb_torch_gpu = torch.rand(10000, 128, device=torch.device('cuda', 0), dtype=torch.float32)
-        with self.assertRaises(AssertionError):
-            cpu_index.add(xb_torch_gpu)
-
-        # Add to GPU with torch GPU
-        res = faiss.StandardGpuResources()
-        gpu_index = faiss.GpuIndexFlatL2(res, 128)
-        gpu_index.add(xb_torch.cuda())
-
-        # Search with torch CPU
-        xq_torch_cpu = torch.rand(10, 128, dtype=torch.float32)
-        d_torch_cpu, i_torch_cpu = gpu_index.search(xq_torch_cpu, 10)
-
-        # Search with torch GPU
-        xq_torch_gpu = xq_torch_cpu.cuda()
-        d_torch_gpu, i_torch_gpu = gpu_index.search(xq_torch_gpu, 10)
-        self.assertTrue(d_torch_gpu.is_cuda)
-        self.assertTrue(i_torch_gpu.is_cuda)
-
-        # Should be equivalent
-        self.assertTrue(torch.equal(d_torch_cpu.cuda(), d_torch_gpu))
-        self.assertTrue(torch.equal(i_torch_cpu.cuda(), i_torch_gpu))
-
-        # Search with torch GPU using pre-allocated arrays
-        new_d_torch_gpu = torch.zeros(10, 10, device=torch.device('cuda', 0), dtype=torch.float32)
-        new_i_torch_gpu = torch.zeros(10, 10, device=torch.device('cuda', 0), dtype=torch.int64)
-        gpu_index.search(xq_torch_gpu, 10, new_d_torch_gpu, new_i_torch_gpu)
-
-        self.assertTrue(torch.equal(d_torch_cpu.cuda(), new_d_torch_gpu))
-        self.assertTrue(torch.equal(i_torch_cpu.cuda(), new_i_torch_gpu))
-
-        # Search with numpy CPU
-        xq_np_cpu = xq_torch_cpu.numpy()
-        d_np_cpu, i_np_cpu = gpu_index.search(xq_np_cpu, 10)
-        self.assertEqual(type(d_np_cpu), np.ndarray)
-        self.assertEqual(type(i_np_cpu), np.ndarray)
-
-        self.assertTrue(np.array_equal(d_torch_cpu.numpy(), d_np_cpu))
-        self.assertTrue(np.array_equal(i_torch_cpu.numpy(), i_np_cpu))
-
-    # tests train, add_with_ids
-    def test_train_add_with_ids(self):
-        d = 32
-        nlist = 5
-        res = faiss.StandardGpuResources()
-        res.noTempMemory()
-
-        index = faiss.GpuIndexIVFFlat(res, d, nlist, faiss.METRIC_L2)
-        xb = torch.rand(1000, d, device=torch.device('cuda', 0), dtype=torch.float32)
-        index.train(xb)
-
-        ids = torch.arange(1000, 1000 + xb.shape[0], device=torch.device('cuda', 0), dtype=torch.int64)
-
-        # Test add_with_ids with torch gpu
-        index.add_with_ids(xb, ids)
-        _, I = index.search(xb[10:20], 1)
-        self.assertTrue(torch.equal(I.view(10), ids[10:20]))
-
-        # Test add_with_ids with torch cpu
-        index.reset()
-        xb_cpu = xb.cpu()
-        ids_cpu = ids.cpu()
-
-        index.train(xb_cpu)
-        index.add_with_ids(xb_cpu, ids_cpu)
-        _, I = index.search(xb_cpu[10:20], 1)
-        self.assertTrue(torch.equal(I.view(10), ids_cpu[10:20]))
-
-        # Test add_with_ids with numpy
-        index.reset()
-        xb_np = xb.cpu().numpy()
-        ids_np = ids.cpu().numpy()
-
-        index.train(xb_np)
-        index.add_with_ids(xb_np, ids_np)
-        _, I = index.search(xb_np[10:20], 1)
-        self.assertTrue(np.array_equal(I.reshape(10), ids_np[10:20]))
-
-    # tests reconstruct, reconstruct_n
-    def test_reconstruct(self):
-        d = 32
-        res = faiss.StandardGpuResources()
-        res.noTempMemory()
-        index = faiss.GpuIndexFlatL2(res, d)
-
-        xb = torch.rand(100, d, device=torch.device('cuda', 0), dtype=torch.float32)
-        index.add(xb)
-
-        # Test reconstruct with torch gpu (native return)
-        y = index.reconstruct(7)
-        self.assertTrue(y.is_cuda)
-        self.assertTrue(torch.equal(xb[7], y))
-
-        # Test reconstruct with numpy output provided
-        y = np.empty(d, dtype='float32')
-        index.reconstruct(11, y)
-        self.assertTrue(np.array_equal(xb.cpu().numpy()[11], y))
-
-        # Test reconstruct with torch cpu output providesd
-        y = torch.empty(d, dtype=torch.float32)
-        index.reconstruct(12, y)
-        self.assertTrue(torch.equal(xb[12].cpu(), y))
-
-        # Test reconstruct with torch gpu output providesd
-        y = torch.empty(d, device=torch.device('cuda', 0), dtype=torch.float32)
-        index.reconstruct(13, y)
-        self.assertTrue(torch.equal(xb[13], y))
-
-        # Test reconstruct_n with torch gpu (native return)
-        y = index.reconstruct_n(10, 10)
-        self.assertTrue(y.is_cuda)
-        self.assertTrue(torch.equal(xb[10:20], y))
-
-        # Test reconstruct with numpy output provided
-        y = np.empty((10, d), dtype='float32')
-        index.reconstruct_n(20, 10, y)
-        self.assertTrue(np.array_equal(xb.cpu().numpy()[20:30], y))
-
-        # Test reconstruct_n with torch cpu output provided
-        y = torch.empty(10, d, dtype=torch.float32)
-        index.reconstruct_n(40, 10, y)
-        self.assertTrue(torch.equal(xb[40:50].cpu(), y))
-
-        # Test reconstruct_n with torch gpu output provided
-        y = torch.empty(10, d, device=torch.device('cuda', 0), dtype=torch.float32)
-        index.reconstruct_n(50, 10, y)
-        self.assertTrue(torch.equal(xb[50:60], y))
-
-    # tests assign
-    def test_assign(self):
-        d = 32
-        res = faiss.StandardGpuResources()
-        res.noTempMemory()
-
-        index = faiss.GpuIndexFlatL2(res, d)
-        xb = torch.rand(10000, d, device=torch.device('cuda', 0), dtype=torch.float32)
-        index.add(xb)
-
-        index_cpu = faiss.IndexFlatL2(d)
-        index.copyTo(index_cpu)
-
-        # Test assign with native gpu output
-        # both input as gpu torch and input as cpu torch
-        xq = torch.rand(10, d, device=torch.device('cuda', 0), dtype=torch.float32)
-
-        labels = index.assign(xq, 5)
-        labels_cpu = index_cpu.assign(xq.cpu(), 5)
-        self.assertTrue(torch.equal(labels.cpu(), labels_cpu))
-
-        # Test assign with np input
-        labels = index.assign(xq.cpu().numpy(), 5)
-        labels_cpu = index_cpu.assign(xq.cpu().numpy(), 5)
-        self.assertTrue(np.array_equal(labels, labels_cpu))
-
-        # Test assign with numpy output provided
-        labels = np.empty((xq.shape[0], 5), dtype='int64')
-        index.assign(xq.cpu().numpy(), 5, labels)
-        self.assertTrue(np.array_equal(labels, labels_cpu))
-
-        # Test assign with torch cpu output provided
-        labels = torch.empty(xq.shape[0], 5, dtype=torch.int64)
-        index.assign(xq.cpu(), 5, labels)
-        labels_cpu = index_cpu.assign(xq.cpu(), 5)
-        self.assertTrue(torch.equal(labels, labels_cpu))
-
-    # tests remove_ids
-    def test_remove_ids(self):
-        # This is not currently implemented on GPU indices
-        return
-
-    # tests range_search
-    def test_range_search(self):
-        # This is not currently implemented on GPU indices
-        return
-
-    # tests search_and_reconstruct
-    def test_search_and_reconstruct(self):
-        # This is not currently implemented on GPU indices
-        return
-
-    # tests sa_encode, sa_decode
-    def test_sa_encode_decode(self):
-        # This is not currently implemented on GPU indices
-        return
-
-class TestTorchUtilsKnnGpu(unittest.TestCase):
-    def test_knn_gpu(self):
-        torch.manual_seed(10)
-        d = 32
-        nb = 1024
-        nq = 10
-        k = 10
-        res = faiss.StandardGpuResources()
-
-        # make GT on torch cpu and test using IndexFlatL2
-        xb = torch.rand(nb, d, dtype=torch.float32)
-        xq = torch.rand(nq, d, dtype=torch.float32)
-
-        index = faiss.IndexFlatL2(d)
-        index.add(xb)
-        gt_D, gt_I = index.search(xq, k)
-
-        # for the GPU, we'll use a non-default stream
-        s = torch.cuda.Stream()
-        with torch.cuda.stream(s):
-            # test numpy inputs
-            xb_np = xb.numpy()
-            xq_np = xq.numpy()
-
-            for xq_row_major in True, False:
-                for xb_row_major in True, False:
-                    if not xq_row_major:
-                        xq_c = to_column_major_numpy(xq_np)
-                        assert not xq_c.flags.contiguous
-                    else:
-                        xq_c = xq_np
-
-                    if not xb_row_major:
-                        xb_c = to_column_major_numpy(xb_np)
-                        assert not xb_c.flags.contiguous
-                    else:
-                        xb_c = xb_np
-
-                    D, I = faiss.knn_gpu(res, xq_c, xb_c, k)
-
-                    self.assertTrue(torch.equal(torch.from_numpy(I), gt_I))
-                    self.assertLess((torch.from_numpy(D) - gt_D).abs().max(), 1e-4)
-
-            # test torch (cpu, gpu) inputs
-            for is_cuda in True, False:
-                for xq_row_major in True, False:
-                    for xb_row_major in True, False:
-
-                        if is_cuda:
-                            xq_c = xq.cuda()
-                            xb_c = xb.cuda()
-                        else:
-                            # also test torch cpu tensors
-                            xq_c = xq
-                            xb_c = xb
-
-                        if not xq_row_major:
-                            xq_c = to_column_major_torch(xq)
-                            assert not xq_c.is_contiguous()
-
-                        if not xb_row_major:
-                            xb_c = to_column_major_torch(xb)
-                            assert not xb_c.is_contiguous()
-
-                        D, I = faiss.knn_gpu(res, xq_c, xb_c, k)
-
-                        self.assertTrue(torch.equal(I.cpu(), gt_I))
-                        self.assertLess((D.cpu() - gt_D).abs().max(), 1e-4)
-
-                        # test on subset
-                        try:
-                            # This internally uses the current pytorch stream
-                            D, I = faiss.knn_gpu(res, xq_c[6:8], xb_c, k)
-                        except TypeError:
-                            if not xq_row_major:
-                                # then it is expected
-                                continue
-                            # otherwise it is an error
-                            raise
-
-                        self.assertTrue(torch.equal(I.cpu(), gt_I[6:8]))
-                        self.assertLess((D.cpu() - gt_D[6:8]).abs().max(), 1e-4)
-
-    def test_knn_gpu_datatypes(self):
-        torch.manual_seed(10)
-        d = 10
-        nb = 1024
-        nq = 5
-        k = 10
-        res = faiss.StandardGpuResources()
-
-        # make GT on torch cpu and test using IndexFlatL2
-        xb = torch.rand(nb, d, dtype=torch.float32)
-        xq = torch.rand(nq, d, dtype=torch.float32)
-
-        index = faiss.IndexFlatL2(d)
-        index.add(xb)
-        gt_D, gt_I = index.search(xq, k)
-
-        xb_c = xb.cuda().half()
-        xq_c = xq.cuda().half()
-
-        # use i32 output indices
-        D = torch.zeros(nq, k, device=xb_c.device, dtype=torch.float32)
-        I = torch.zeros(nq, k, device=xb_c.device, dtype=torch.int32)
-
-        faiss.knn_gpu(res, xq_c, xb_c, k, D, I)
-
-        self.assertTrue(torch.equal(I.long().cpu(), gt_I))
-        self.assertLess((D.float().cpu() - gt_D).abs().max(), 1.5e-3)
-
-        # Test using numpy
-        D = np.zeros((nq, k), dtype=np.float32)
-        I = np.zeros((nq, k), dtype=np.int32)
-
-        xb_c = xb.half().numpy()
-        xq_c = xq.half().numpy()
-
-        faiss.knn_gpu(res, xq_c, xb_c, k, D, I)
-
-        self.assertTrue(torch.equal(torch.from_numpy(I).long(), gt_I))
-        self.assertLess((torch.from_numpy(D) - gt_D).abs().max(), 1.5e-3)
-
-class TestTorchUtilsPairwiseDistanceGpu(unittest.TestCase):
-    def test_pairwise_distance_gpu(self):
-        torch.manual_seed(10)
-        d = 32
-        k = 100
-        # To compare against IndexFlat, use nb == k
-        nb = k
-        nq = 10
-        res = faiss.StandardGpuResources()
-
-        # make GT on torch cpu and test using IndexFlatL2
-        xb = torch.rand(nb, d, dtype=torch.float32)
-        xq = torch.rand(nq, d, dtype=torch.float32)
-
-        index = faiss.IndexFlatL2(d)
-        index.add(xb)
-        gt_D, _ = index.search(xq, k)
-
-        # for the GPU, we'll use a non-default stream
-        s = torch.cuda.Stream()
-        with torch.cuda.stream(s):
-            # test numpy inputs
-            xb_np = xb.numpy()
-            xq_np = xq.numpy()
-
-            for xq_row_major in True, False:
-                for xb_row_major in True, False:
-                    if not xq_row_major:
-                        xq_c = to_column_major_numpy(xq_np)
-                        assert not xq_c.flags.contiguous
-                    else:
-                        xq_c = xq_np
-
-                    if not xb_row_major:
-                        xb_c = to_column_major_numpy(xb_np)
-                        assert not xb_c.flags.contiguous
-                    else:
-                        xb_c = xb_np
-
-                    D = faiss.pairwise_distance_gpu(res, xq_c, xb_c)
-
-                    # IndexFlat will sort the results, so we need to
-                    # do the same on our end
-                    D = np.sort(D, axis=1)
-
-                    self.assertLess((torch.from_numpy(D) - gt_D).abs().max(), 1e-4)
-
-            # test torch (cpu, gpu) inputs
-            for is_cuda in True, False:
-                for xq_row_major in True, False:
-                    for xb_row_major in True, False:
-
-                        if is_cuda:
-                            xq_c = xq.cuda()
-                            xb_c = xb.cuda()
-                        else:
-                            # also test torch cpu tensors
-                            xq_c = xq
-                            xb_c = xb
-
-                        if not xq_row_major:
-                            xq_c = to_column_major_torch(xq)
-                            assert not xq_c.is_contiguous()
-
-                        if not xb_row_major:
-                            xb_c = to_column_major_torch(xb)
-                            assert not xb_c.is_contiguous()
-
-                        D = faiss.pairwise_distance_gpu(res, xq_c, xb_c)
-
-                        # IndexFlat will sort the results, so we need to
-                        # do the same on our end
-                        D, _ = torch.sort(D, dim=1)
-
-                        self.assertLess((D.cpu() - gt_D).abs().max(), 1e-4)
-
-                        # test on subset
-                        try:
-                            # This internally uses the current pytorch stream
-                            D = faiss.pairwise_distance_gpu(res, xq_c[4:8], xb_c)
-                        except TypeError:
-                            if not xq_row_major:
-                                # then it is expected
-                                continue
-                            # otherwise it is an error
-                            raise
-
-                        # IndexFlat will sort the results, so we need to
-                        # do the same on our end
-                        print(D)
-                        D, _ = torch.sort(D, dim=1)
-
-                        self.assertLess((D.cpu() - gt_D[4:8]).abs().max(), 1e-4)
diff --git a/faiss/gpu_cuda/utils/BlockSelectFloat.cu b/faiss/gpu_cuda/utils/BlockSelectFloat.cu
deleted file mode 100644
index 627a4a03ac36951865d6d37bd8f2c0f3072e7f5f..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/BlockSelectFloat.cu
+++ /dev/null
@@ -1,152 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/blockselect/BlockSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-// warp Q to thread Q:
-// 1, 1
-// 32, 2
-// 64, 3
-// 128, 3
-// 256, 4
-// 512, 8
-// 1024, 8
-// 2048, 8
-
-BLOCK_SELECT_DECL(float, true, 1);
-BLOCK_SELECT_DECL(float, true, 32);
-BLOCK_SELECT_DECL(float, true, 64);
-BLOCK_SELECT_DECL(float, true, 128);
-BLOCK_SELECT_DECL(float, true, 256);
-BLOCK_SELECT_DECL(float, true, 512);
-BLOCK_SELECT_DECL(float, true, 1024);
-#if GPU_MAX_SELECTION_K >= 2048
-BLOCK_SELECT_DECL(float, true, 2048);
-#endif
-
-BLOCK_SELECT_DECL(float, false, 1);
-BLOCK_SELECT_DECL(float, false, 32);
-BLOCK_SELECT_DECL(float, false, 64);
-BLOCK_SELECT_DECL(float, false, 128);
-BLOCK_SELECT_DECL(float, false, 256);
-BLOCK_SELECT_DECL(float, false, 512);
-BLOCK_SELECT_DECL(float, false, 1024);
-#if GPU_MAX_SELECTION_K >= 2048
-BLOCK_SELECT_DECL(float, false, 2048);
-#endif
-
-void runBlockSelect(
-        Tensor<float, 2, true>& in,
-        Tensor<float, 2, true>& outK,
-        Tensor<int, 2, true>& outV,
-        bool dir,
-        int k,
-        cudaStream_t stream) {
-    FAISS_ASSERT(k <= GPU_MAX_SELECTION_K);
-
-    if (dir) {
-        if (k == 1) {
-            BLOCK_SELECT_CALL(float, true, 1);
-        } else if (k <= 32) {
-            BLOCK_SELECT_CALL(float, true, 32);
-        } else if (k <= 64) {
-            BLOCK_SELECT_CALL(float, true, 64);
-        } else if (k <= 128) {
-            BLOCK_SELECT_CALL(float, true, 128);
-        } else if (k <= 256) {
-            BLOCK_SELECT_CALL(float, true, 256);
-        } else if (k <= 512) {
-            BLOCK_SELECT_CALL(float, true, 512);
-        } else if (k <= 1024) {
-            BLOCK_SELECT_CALL(float, true, 1024);
-#if GPU_MAX_SELECTION_K >= 2048
-        } else if (k <= 2048) {
-            BLOCK_SELECT_CALL(float, true, 2048);
-#endif
-        }
-    } else {
-        if (k == 1) {
-            BLOCK_SELECT_CALL(float, false, 1);
-        } else if (k <= 32) {
-            BLOCK_SELECT_CALL(float, false, 32);
-        } else if (k <= 64) {
-            BLOCK_SELECT_CALL(float, false, 64);
-        } else if (k <= 128) {
-            BLOCK_SELECT_CALL(float, false, 128);
-        } else if (k <= 256) {
-            BLOCK_SELECT_CALL(float, false, 256);
-        } else if (k <= 512) {
-            BLOCK_SELECT_CALL(float, false, 512);
-        } else if (k <= 1024) {
-            BLOCK_SELECT_CALL(float, false, 1024);
-#if GPU_MAX_SELECTION_K >= 2048
-        } else if (k <= 2048) {
-            BLOCK_SELECT_CALL(float, false, 2048);
-#endif
-        }
-    }
-}
-
-void runBlockSelectPair(
-        Tensor<float, 2, true>& inK,
-        Tensor<int, 2, true>& inV,
-        Tensor<float, 2, true>& outK,
-        Tensor<int, 2, true>& outV,
-        bool dir,
-        int k,
-        cudaStream_t stream) {
-    FAISS_ASSERT(k <= GPU_MAX_SELECTION_K);
-
-    if (dir) {
-        if (k == 1) {
-            BLOCK_SELECT_PAIR_CALL(float, true, 1);
-        } else if (k <= 32) {
-            BLOCK_SELECT_PAIR_CALL(float, true, 32);
-        } else if (k <= 64) {
-            BLOCK_SELECT_PAIR_CALL(float, true, 64);
-        } else if (k <= 128) {
-            BLOCK_SELECT_PAIR_CALL(float, true, 128);
-        } else if (k <= 256) {
-            BLOCK_SELECT_PAIR_CALL(float, true, 256);
-        } else if (k <= 512) {
-            BLOCK_SELECT_PAIR_CALL(float, true, 512);
-        } else if (k <= 1024) {
-            BLOCK_SELECT_PAIR_CALL(float, true, 1024);
-#if GPU_MAX_SELECTION_K >= 2048
-        } else if (k <= 2048) {
-            BLOCK_SELECT_PAIR_CALL(float, true, 2048);
-#endif
-        }
-    } else {
-        if (k == 1) {
-            BLOCK_SELECT_PAIR_CALL(float, false, 1);
-        } else if (k <= 32) {
-            BLOCK_SELECT_PAIR_CALL(float, false, 32);
-        } else if (k <= 64) {
-            BLOCK_SELECT_PAIR_CALL(float, false, 64);
-        } else if (k <= 128) {
-            BLOCK_SELECT_PAIR_CALL(float, false, 128);
-        } else if (k <= 256) {
-            BLOCK_SELECT_PAIR_CALL(float, false, 256);
-        } else if (k <= 512) {
-            BLOCK_SELECT_PAIR_CALL(float, false, 512);
-        } else if (k <= 1024) {
-            BLOCK_SELECT_PAIR_CALL(float, false, 1024);
-#if GPU_MAX_SELECTION_K >= 2048
-        } else if (k <= 2048) {
-            BLOCK_SELECT_PAIR_CALL(float, false, 2048);
-#endif
-        }
-    }
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/BlockSelectKernel.cuh b/faiss/gpu_cuda/utils/BlockSelectKernel.cuh
deleted file mode 100644
index 37bbc3e576be51f990f618e4517bf5c8a25e6c26..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/BlockSelectKernel.cuh
+++ /dev/null
@@ -1,165 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/Select.cuh>
-
-namespace faiss {
-namespace gpu {
-
-template <
-        typename K,
-        typename IndexType,
-        bool Dir,
-        int NumWarpQ,
-        int NumThreadQ,
-        int ThreadsPerBlock>
-__global__ void blockSelect(
-        Tensor<K, 2, true> in,
-        Tensor<K, 2, true> outK,
-        Tensor<IndexType, 2, true> outV,
-        K initK,
-        IndexType initV,
-        int k) {
-    constexpr int kNumWarps = ThreadsPerBlock / kWarpSize;
-
-    __shared__ K smemK[kNumWarps * NumWarpQ];
-    __shared__ IndexType smemV[kNumWarps * NumWarpQ];
-
-    BlockSelect<
-            K,
-            IndexType,
-            Dir,
-            Comparator<K>,
-            NumWarpQ,
-            NumThreadQ,
-            ThreadsPerBlock>
-            heap(initK, initV, smemK, smemV, k);
-
-    // Grid is exactly sized to rows available
-    int row = blockIdx.x;
-
-    int i = threadIdx.x;
-    K* inStart = in[row][i].data();
-
-    // Whole warps must participate in the selection
-    int limit = utils::roundDown(in.getSize(1), kWarpSize);
-
-    for (; i < limit; i += ThreadsPerBlock) {
-        heap.add(*inStart, (IndexType)i);
-        inStart += ThreadsPerBlock;
-    }
-
-    // Handle last remainder fraction of a warp of elements
-    if (i < in.getSize(1)) {
-        heap.addThreadQ(*inStart, (IndexType)i);
-    }
-
-    heap.reduce();
-
-    for (int i = threadIdx.x; i < k; i += ThreadsPerBlock) {
-        outK[row][i] = smemK[i];
-        outV[row][i] = smemV[i];
-    }
-}
-
-template <
-        typename K,
-        typename IndexType,
-        bool Dir,
-        int NumWarpQ,
-        int NumThreadQ,
-        int ThreadsPerBlock>
-__global__ void blockSelectPair(
-        Tensor<K, 2, true> inK,
-        Tensor<IndexType, 2, true> inV,
-        Tensor<K, 2, true> outK,
-        Tensor<IndexType, 2, true> outV,
-        K initK,
-        IndexType initV,
-        int k) {
-    constexpr int kNumWarps = ThreadsPerBlock / kWarpSize;
-
-    __shared__ K smemK[kNumWarps * NumWarpQ];
-    __shared__ IndexType smemV[kNumWarps * NumWarpQ];
-
-    BlockSelect<
-            K,
-            IndexType,
-            Dir,
-            Comparator<K>,
-            NumWarpQ,
-            NumThreadQ,
-            ThreadsPerBlock>
-            heap(initK, initV, smemK, smemV, k);
-
-    // Grid is exactly sized to rows available
-    int row = blockIdx.x;
-
-    int i = threadIdx.x;
-    K* inKStart = inK[row][i].data();
-    IndexType* inVStart = inV[row][i].data();
-
-    // Whole warps must participate in the selection
-    int limit = utils::roundDown(inK.getSize(1), kWarpSize);
-
-    for (; i < limit; i += ThreadsPerBlock) {
-        heap.add(*inKStart, *inVStart);
-        inKStart += ThreadsPerBlock;
-        inVStart += ThreadsPerBlock;
-    }
-
-    // Handle last remainder fraction of a warp of elements
-    if (i < inK.getSize(1)) {
-        heap.addThreadQ(*inKStart, *inVStart);
-    }
-
-    heap.reduce();
-
-    for (int i = threadIdx.x; i < k; i += ThreadsPerBlock) {
-        outK[row][i] = smemK[i];
-        outV[row][i] = smemV[i];
-    }
-}
-
-void runBlockSelect(
-        Tensor<float, 2, true>& in,
-        Tensor<float, 2, true>& outKeys,
-        Tensor<int, 2, true>& outIndices,
-        bool dir,
-        int k,
-        cudaStream_t stream);
-
-void runBlockSelectPair(
-        Tensor<float, 2, true>& inKeys,
-        Tensor<int, 2, true>& inIndices,
-        Tensor<float, 2, true>& outKeys,
-        Tensor<int, 2, true>& outIndices,
-        bool dir,
-        int k,
-        cudaStream_t stream);
-
-void runBlockSelect(
-        Tensor<half, 2, true>& in,
-        Tensor<half, 2, true>& outKeys,
-        Tensor<int, 2, true>& outIndices,
-        bool dir,
-        int k,
-        cudaStream_t stream);
-
-void runBlockSelectPair(
-        Tensor<half, 2, true>& inKeys,
-        Tensor<int, 2, true>& inIndices,
-        Tensor<half, 2, true>& outKeys,
-        Tensor<int, 2, true>& outIndices,
-        bool dir,
-        int k,
-        cudaStream_t stream);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/Comparators.cuh b/faiss/gpu_cuda/utils/Comparators.cuh
deleted file mode 100644
index cbbda0ce8106aa6624de7a2d818ebd06d7df1b70..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/Comparators.cuh
+++ /dev/null
@@ -1,47 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda.h>
-#include <faiss/gpu/utils/Float16.cuh>
-
-namespace faiss {
-namespace gpu {
-
-template <typename T>
-struct Comparator {
-    __device__ static inline bool lt(T a, T b) {
-        return a < b;
-    }
-
-    __device__ static inline bool gt(T a, T b) {
-        return a > b;
-    }
-};
-
-template <>
-struct Comparator<half> {
-    __device__ static inline bool lt(half a, half b) {
-#if FAISS_USE_FULL_FLOAT16
-        return __hlt(a, b);
-#else
-        return __half2float(a) < __half2float(b);
-#endif // FAISS_USE_FULL_FLOAT16
-    }
-
-    __device__ static inline bool gt(half a, half b) {
-#if FAISS_USE_FULL_FLOAT16
-        return __hgt(a, b);
-#else
-        return __half2float(a) > __half2float(b);
-#endif // FAISS_USE_FULL_FLOAT16
-    }
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/ConversionOperators.cuh b/faiss/gpu_cuda/utils/ConversionOperators.cuh
deleted file mode 100644
index e843c02320341a627f7afd467f9515c3bf6fe581..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/ConversionOperators.cuh
+++ /dev/null
@@ -1,157 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/MetricType.h>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-
-#include <cuda.h>
-#include <thrust/execution_policy.h>
-#include <thrust/transform.h>
-
-namespace faiss {
-namespace gpu {
-
-//
-// Conversion utilities
-//
-
-template <typename From, typename To>
-struct Convert {
-    inline __device__ To operator()(From v) const {
-        return (To)v;
-    }
-};
-
-template <>
-struct Convert<float, half> {
-    inline __device__ half operator()(float v) const {
-        return __float2half(v);
-    }
-};
-
-template <>
-struct Convert<half, float> {
-    inline __device__ float operator()(half v) const {
-        return __half2float(v);
-    }
-};
-
-template <typename T>
-struct ConvertTo {};
-
-template <>
-struct ConvertTo<float> {
-    static inline __device__ float to(float v) {
-        return v;
-    }
-    static inline __device__ float to(half v) {
-        return __half2float(v);
-    }
-};
-
-template <>
-struct ConvertTo<float2> {
-    static inline __device__ float2 to(float2 v) {
-        return v;
-    }
-    static inline __device__ float2 to(half2 v) {
-        return __half22float2(v);
-    }
-};
-
-template <>
-struct ConvertTo<float4> {
-    static inline __device__ float4 to(float4 v) {
-        return v;
-    }
-    static inline __device__ float4 to(Half4 v) {
-        return half4ToFloat4(v);
-    }
-};
-
-template <>
-struct ConvertTo<half> {
-    static inline __device__ half to(float v) {
-        return __float2half(v);
-    }
-    static inline __device__ half to(half v) {
-        return v;
-    }
-};
-
-template <>
-struct ConvertTo<half2> {
-    static inline __device__ half2 to(float2 v) {
-        return __float22half2_rn(v);
-    }
-    static inline __device__ half2 to(half2 v) {
-        return v;
-    }
-};
-
-template <>
-struct ConvertTo<Half4> {
-    static inline __device__ Half4 to(float4 v) {
-        return float4ToHalf4(v);
-    }
-    static inline __device__ Half4 to(Half4 v) {
-        return v;
-    }
-};
-
-// Tensor conversion
-template <typename From, typename To>
-void runConvert(const From* in, To* out, size_t num, cudaStream_t stream) {
-    thrust::transform(
-            thrust::cuda::par.on(stream),
-            in,
-            in + num,
-            out,
-            Convert<From, To>());
-}
-
-template <typename From, typename To, int Dim>
-void convertTensor(
-        cudaStream_t stream,
-        Tensor<From, Dim, true>& in,
-        Tensor<To, Dim, true>& out) {
-    FAISS_ASSERT(in.numElements() == out.numElements());
-
-    runConvert<From, To>(in.data(), out.data(), in.numElements(), stream);
-}
-
-template <typename From, typename To, int Dim>
-DeviceTensor<To, Dim, true> convertTensorTemporary(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<From, Dim, true>& in) {
-    FAISS_ASSERT(res);
-    DeviceTensor<To, Dim, true> out(
-            res, makeTempAlloc(AllocType::Other, stream), in.sizes());
-
-    convertTensor(stream, in, out);
-    return out;
-}
-
-template <typename From, typename To, int Dim>
-DeviceTensor<To, Dim, true> convertTensorNonTemporary(
-        GpuResources* res,
-        cudaStream_t stream,
-        Tensor<From, Dim, true>& in) {
-    FAISS_ASSERT(res);
-    DeviceTensor<To, Dim, true> out(
-            res, makeDevAlloc(AllocType::Other, stream), in.sizes());
-
-    convertTensor(stream, in, out);
-    return out;
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/CopyUtils.cuh b/faiss/gpu_cuda/utils/CopyUtils.cuh
deleted file mode 100644
index a99e87ab1d306df7c5f294e1f9002f5d266e444c..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/CopyUtils.cuh
+++ /dev/null
@@ -1,138 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-/// Ensure the memory at `p` is either on the given device, or copy it
-/// to the device in a new temporary allocation.
-template <typename T, int Dim>
-DeviceTensor<T, Dim, true> toDeviceTemporary(
-        GpuResources* resources,
-        int dstDevice,
-        T* src,
-        cudaStream_t stream,
-        std::initializer_list<int> sizes) {
-    int dev = getDeviceForAddress(src);
-    DeviceTensor<T, Dim, true> oldT(src, sizes);
-
-    if (dev == dstDevice) {
-        // On device we expect
-        return oldT;
-    } else {
-        // On different device or on host
-        DeviceScope scope(dstDevice);
-
-        DeviceTensor<T, Dim, true> newT(
-                resources, makeTempAlloc(AllocType::Other, stream), sizes);
-
-        newT.copyFrom(oldT, stream);
-        return newT;
-    }
-}
-
-template <typename T, int Dim>
-DeviceTensor<T, Dim, true> toDeviceNonTemporary(
-        GpuResources* resources,
-        int dstDevice,
-        T* src,
-        cudaStream_t stream,
-        std::initializer_list<int> sizes) {
-    int dev = getDeviceForAddress(src);
-    DeviceTensor<T, Dim, true> oldT(src, sizes);
-
-    if (dev == dstDevice) {
-        // On device we expect
-        return oldT;
-    } else {
-        // On different device or on host
-        DeviceScope scope(dstDevice);
-
-        DeviceTensor<T, Dim, true> newT(
-                resources, makeDevAlloc(AllocType::Other, stream), sizes);
-
-        newT.copyFrom(oldT, stream);
-        return newT;
-    }
-}
-
-template <typename T>
-DeviceTensor<T, 1, true> toDeviceTemporary(
-        GpuResources* resources,
-        const std::vector<T>& src,
-        cudaStream_t stream,
-        int device = -1) {
-    // Uses the current device if device == -1
-    DeviceScope scope(device);
-
-    FAISS_ASSERT(src.size() < (size_t)std::numeric_limits<int>::max());
-
-    DeviceTensor<T, 1, true> out(
-            resources,
-            makeTempAlloc(AllocType::Other, stream),
-            {(int)src.size()});
-
-    out.copyFrom(src, stream);
-
-    return out;
-}
-
-/// Copies data to the CPU, if it is not already on the CPU
-template <typename T, int Dim>
-HostTensor<T, Dim, true> toHost(
-        T* src,
-        cudaStream_t stream,
-        std::initializer_list<int> sizes) {
-    int dev = getDeviceForAddress(src);
-
-    if (dev == -1) {
-        // Already on the CPU, just wrap in a HostTensor that doesn't own this
-        // memory
-        return HostTensor<T, Dim, true>(src, sizes);
-    } else {
-        HostTensor<T, Dim, true> out(sizes);
-        Tensor<T, Dim, true> devData(src, sizes);
-        out.copyFrom(devData, stream);
-
-        return out;
-    }
-}
-
-/// Copies a device array's allocation to an address, if necessary
-template <typename T>
-inline void fromDevice(T* src, T* dst, size_t num, cudaStream_t stream) {
-    // It is possible that the array already represents memory at `p`,
-    // in which case no copy is needed
-    if (src == dst) {
-        return;
-    }
-
-    int dev = getDeviceForAddress(dst);
-
-    if (dev == -1) {
-        CUDA_VERIFY(cudaMemcpyAsync(
-                dst, src, num * sizeof(T), cudaMemcpyDeviceToHost, stream));
-    } else {
-        CUDA_VERIFY(cudaMemcpyAsync(
-                dst, src, num * sizeof(T), cudaMemcpyDeviceToDevice, stream));
-    }
-}
-
-/// Copies a device array's allocation to an address, if necessary
-template <typename T, int Dim>
-void fromDevice(Tensor<T, Dim, true>& src, T* dst, cudaStream_t stream) {
-    FAISS_ASSERT(src.isContiguous());
-    fromDevice(src.data(), dst, src.numElements(), stream);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/DeviceDefs.cuh b/faiss/gpu_cuda/utils/DeviceDefs.cuh
deleted file mode 100644
index bdba8d720b3366054aa0b3eb4be82dadd9009453..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/DeviceDefs.cuh
+++ /dev/null
@@ -1,43 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda.h>
-
-namespace faiss {
-namespace gpu {
-
-// We require at least CUDA 8.0 for compilation
-#if CUDA_VERSION < 8000
-#error "CUDA >= 8.0 is required"
-#endif
-
-// We validate this against the actual architecture in device initialization
-constexpr int kWarpSize = 32;
-
-// This is a memory barrier for intra-warp writes to shared memory.
-__forceinline__ __device__ void warpFence() {
-#if CUDA_VERSION >= 9000
-    __syncwarp();
-#else
-    // For the time being, assume synchronicity.
-    //  __threadfence_block();
-#endif
-}
-
-#if CUDA_VERSION > 9000
-// Based on the CUDA version (we assume what version of nvcc/ptxas we were
-// compiled with), the register allocation algorithm is much better, so only
-// enable the 2048 selection code if we are above 9.0 (9.2 seems to be ok)
-#define GPU_MAX_SELECTION_K 2048
-#else
-#define GPU_MAX_SELECTION_K 1024
-#endif
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/DeviceTensor-inl.cuh b/faiss/gpu_cuda/utils/DeviceTensor-inl.cuh
deleted file mode 100644
index b218e10b62aaae89cdc4d3743b2b2c6f9b4046df..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/DeviceTensor-inl.cuh
+++ /dev/null
@@ -1,192 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <utility> // std::move
-
-namespace faiss {
-namespace gpu {
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>::DeviceTensor()
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>() {}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>::DeviceTensor(
-        DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>&& t)
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>() {
-    this->operator=(std::move(t));
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>& DeviceTensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::
-operator=(DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>&& t) {
-    this->Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::operator=(
-            std::move(t));
-
-    this->reservation_ = std::move(t.reservation_);
-    return *this;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>::~DeviceTensor() {
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>::DeviceTensor(
-        GpuResources* res,
-        const AllocInfo& info,
-        const IndexT sizes[Dim])
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(nullptr, sizes) {
-    this->reservation_ = std::move(
-            res->allocMemoryHandle(AllocRequest(info, this->getSizeInBytes())));
-    this->data_ = (T*)reservation_.get();
-
-    FAISS_ASSERT(this->data_ || (this->getSizeInBytes() == 0));
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>::DeviceTensor(
-        GpuResources* res,
-        const AllocInfo& info,
-        std::initializer_list<IndexT> sizes)
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(nullptr, sizes) {
-    this->reservation_ = std::move(
-            res->allocMemoryHandle(AllocRequest(info, this->getSizeInBytes())));
-    this->data_ = (T*)reservation_.get();
-
-    FAISS_ASSERT(this->data_ || (this->getSizeInBytes() == 0));
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>::DeviceTensor(
-        DataPtrType data,
-        const IndexT sizes[Dim])
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(data, sizes) {}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>::DeviceTensor(
-        DataPtrType data,
-        std::initializer_list<IndexT> sizes)
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(data, sizes) {}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>::DeviceTensor(
-        DataPtrType data,
-        const IndexT sizes[Dim],
-        const IndexT strides[Dim])
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(data, sizes, strides) {
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>::DeviceTensor(
-        GpuResources* res,
-        const AllocInfo& info,
-        Tensor<T, Dim, InnerContig, IndexT, PtrTraits>& t)
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(
-                  nullptr,
-                  t.sizes(),
-                  t.strides()) {
-    this->reservation_ = std::move(
-            res->allocMemoryHandle(AllocRequest(info, this->getSizeInBytes())));
-    this->data_ = (T*)reservation_.get();
-
-    FAISS_ASSERT(this->data_ || (this->getSizeInBytes() == 0));
-
-    this->copyFrom(t, info.stream);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>& DeviceTensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::zero(cudaStream_t stream) {
-    if (this->data_) {
-        // Region must be contiguous
-        FAISS_ASSERT(this->isContiguous());
-
-        CUDA_VERIFY(cudaMemsetAsync(
-                this->data_, 0, this->getSizeInBytes(), stream));
-    }
-
-    return *this;
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/DeviceTensor.cuh b/faiss/gpu_cuda/utils/DeviceTensor.cuh
deleted file mode 100644
index eadb61e505e25e9c92d79021bc922553dc7a295f..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/DeviceTensor.cuh
+++ /dev/null
@@ -1,95 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig = false,
-        typename IndexT = int,
-        template <typename U> class PtrTraits = traits::DefaultPtrTraits>
-class DeviceTensor : public Tensor<T, Dim, InnerContig, IndexT, PtrTraits> {
-   public:
-    typedef IndexT IndexType;
-    typedef typename PtrTraits<T>::PtrType DataPtrType;
-
-    /// Default constructor
-    __host__ DeviceTensor();
-
-    /// Destructor
-    __host__ ~DeviceTensor();
-
-    /// Move constructor
-    __host__ DeviceTensor(
-            DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>&& t);
-
-    /// Move assignment
-    __host__ DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>& operator=(
-            DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>&& t);
-
-    /// Constructs a tensor of the given size, allocating memory for it
-    /// via temporary or other allocation.
-    /// `stream` specifies the stream on which the memory will be used
-    __host__ DeviceTensor(
-            GpuResources* res,
-            const AllocInfo& info,
-            const IndexT sizes[Dim]);
-
-    /// Constructs a tensor of the given size, allocating memory for it
-    /// via temporary or other allocation.
-    /// `stream` specifies the stream on which the memory will be used
-    __host__ DeviceTensor(
-            GpuResources* res,
-            const AllocInfo& info,
-            std::initializer_list<IndexT> sizes);
-
-    /// Constructs a tensor of the given size and stride, referencing a
-    /// memory region we do not own
-    __host__ DeviceTensor(DataPtrType data, const IndexT sizes[Dim]);
-
-    /// Constructs a tensor of the given size and stride, referencing a
-    /// memory region we do not own
-    __host__ DeviceTensor(
-            DataPtrType data,
-            std::initializer_list<IndexT> sizes);
-
-    /// Constructs a tensor of the given size and stride, referencing a
-    /// memory region we do not own
-    __host__ DeviceTensor(
-            DataPtrType data,
-            const IndexT sizes[Dim],
-            const IndexT strides[Dim]);
-
-    /// Copies a tensor into ourselves, allocating memory for it.
-    /// `stream` specifies the stream of the copy and thus the stream on which
-    /// the memory will initially be used.
-    __host__ DeviceTensor(
-            GpuResources* res,
-            const AllocInfo& info,
-            Tensor<T, Dim, InnerContig, IndexT, PtrTraits>& t);
-
-    /// Call to zero out memory
-    __host__ DeviceTensor<T, Dim, InnerContig, IndexT, PtrTraits>& zero(
-            cudaStream_t stream);
-
-   private:
-    /// If we own the memory (temporary or non-temporary memory reservation),
-    /// this holds the memory and will release it when we are destroyed
-    GpuMemoryReservation reservation_;
-};
-
-} // namespace gpu
-} // namespace faiss
-
-#include <faiss/gpu/utils/DeviceTensor-inl.cuh>
diff --git a/faiss/gpu_cuda/utils/DeviceUtils.cu b/faiss/gpu_cuda/utils/DeviceUtils.cu
deleted file mode 100644
index 90b1c891a4bc1eed8ec97f60417733876df5c348..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/DeviceUtils.cu
+++ /dev/null
@@ -1,222 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <cuda_profiler_api.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/impl/FaissAssert.h>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <mutex>
-#include <unordered_map>
-
-namespace faiss {
-namespace gpu {
-
-int getCurrentDevice() {
-    int dev = -1;
-    CUDA_VERIFY(cudaGetDevice(&dev));
-    FAISS_ASSERT(dev != -1);
-
-    return dev;
-}
-
-void setCurrentDevice(int device) {
-    CUDA_VERIFY(cudaSetDevice(device));
-}
-
-int getNumDevices() {
-    int numDev = -1;
-    cudaError_t err = cudaGetDeviceCount(&numDev);
-    if (cudaErrorNoDevice == err) {
-        numDev = 0;
-    } else {
-        CUDA_VERIFY(err);
-    }
-    FAISS_ASSERT(numDev != -1);
-
-    return numDev;
-}
-
-void profilerStart() {
-    CUDA_VERIFY(cudaProfilerStart());
-}
-
-void profilerStop() {
-    CUDA_VERIFY(cudaProfilerStop());
-}
-
-void synchronizeAllDevices() {
-    for (int i = 0; i < getNumDevices(); ++i) {
-        DeviceScope scope(i);
-
-        CUDA_VERIFY(cudaDeviceSynchronize());
-    }
-}
-
-const cudaDeviceProp& getDeviceProperties(int device) {
-    static std::mutex mutex;
-    static std::unordered_map<int, cudaDeviceProp> properties;
-
-    std::lock_guard<std::mutex> guard(mutex);
-
-    auto it = properties.find(device);
-    if (it == properties.end()) {
-        cudaDeviceProp prop;
-        CUDA_VERIFY(cudaGetDeviceProperties(&prop, device));
-
-        properties[device] = prop;
-        it = properties.find(device);
-    }
-
-    return it->second;
-}
-
-const cudaDeviceProp& getCurrentDeviceProperties() {
-    return getDeviceProperties(getCurrentDevice());
-}
-
-int getMaxThreads(int device) {
-    return getDeviceProperties(device).maxThreadsPerBlock;
-}
-
-int getMaxThreadsCurrentDevice() {
-    return getMaxThreads(getCurrentDevice());
-}
-
-size_t getMaxSharedMemPerBlock(int device) {
-    return getDeviceProperties(device).sharedMemPerBlock;
-}
-
-size_t getMaxSharedMemPerBlockCurrentDevice() {
-    return getMaxSharedMemPerBlock(getCurrentDevice());
-}
-
-int getDeviceForAddress(const void* p) {
-    if (!p) {
-        return -1;
-    }
-
-    cudaPointerAttributes att;
-    cudaError_t err = cudaPointerGetAttributes(&att, p);
-    FAISS_ASSERT_FMT(
-            err == cudaSuccess || err == cudaErrorInvalidValue,
-            "unknown error %d",
-            (int)err);
-
-    if (err == cudaErrorInvalidValue) {
-        // Make sure the current thread error status has been reset
-        err = cudaGetLastError();
-        FAISS_ASSERT_FMT(
-                err == cudaErrorInvalidValue, "unknown error %d", (int)err);
-        return -1;
-    }
-
-    // memoryType is deprecated for CUDA 10.0+
-#if CUDA_VERSION < 10000
-    if (att.memoryType == cudaMemoryTypeHost) {
-        return -1;
-    } else {
-        return att.device;
-    }
-#else
-    // FIXME: what to use for managed memory?
-    if (att.type == cudaMemoryTypeDevice) {
-        return att.device;
-    } else {
-        return -1;
-    }
-#endif
-}
-
-bool getFullUnifiedMemSupport(int device) {
-    const auto& prop = getDeviceProperties(device);
-    return (prop.major >= 6);
-}
-
-bool getFullUnifiedMemSupportCurrentDevice() {
-    return getFullUnifiedMemSupport(getCurrentDevice());
-}
-
-bool getTensorCoreSupport(int device) {
-    const auto& prop = getDeviceProperties(device);
-    return (prop.major >= 7);
-}
-
-bool getTensorCoreSupportCurrentDevice() {
-    return getTensorCoreSupport(getCurrentDevice());
-}
-
-int getMaxKSelection() {
-    // Don't use the device at the moment, just base this based on the CUDA SDK
-    // that we were compiled with
-    return GPU_MAX_SELECTION_K;
-}
-
-DeviceScope::DeviceScope(int device) {
-    if (device >= 0) {
-        int curDevice = getCurrentDevice();
-
-        if (curDevice != device) {
-            prevDevice_ = curDevice;
-            setCurrentDevice(device);
-            return;
-        }
-    }
-
-    // Otherwise, we keep the current device
-    prevDevice_ = -1;
-}
-
-DeviceScope::~DeviceScope() {
-    if (prevDevice_ != -1) {
-        setCurrentDevice(prevDevice_);
-    }
-}
-
-CublasHandleScope::CublasHandleScope() {
-    auto blasStatus = cublasCreate(&blasHandle_);
-    FAISS_ASSERT(blasStatus == CUBLAS_STATUS_SUCCESS);
-}
-
-CublasHandleScope::~CublasHandleScope() {
-    auto blasStatus = cublasDestroy(blasHandle_);
-    FAISS_ASSERT(blasStatus == CUBLAS_STATUS_SUCCESS);
-}
-
-CudaEvent::CudaEvent(cudaStream_t stream, bool timer) : event_(0) {
-    CUDA_VERIFY(cudaEventCreateWithFlags(
-            &event_, timer ? cudaEventDefault : cudaEventDisableTiming));
-    CUDA_VERIFY(cudaEventRecord(event_, stream));
-}
-
-CudaEvent::CudaEvent(CudaEvent&& event) noexcept
-        : event_(std::move(event.event_)) {
-    event.event_ = 0;
-}
-
-CudaEvent::~CudaEvent() {
-    if (event_) {
-        CUDA_VERIFY(cudaEventDestroy(event_));
-    }
-}
-
-CudaEvent& CudaEvent::operator=(CudaEvent&& event) noexcept {
-    event_ = std::move(event.event_);
-    event.event_ = 0;
-
-    return *this;
-}
-
-void CudaEvent::streamWaitOnEvent(cudaStream_t stream) {
-    CUDA_VERIFY(cudaStreamWaitEvent(stream, event_, 0));
-}
-
-void CudaEvent::cpuWaitOnEvent() {
-    CUDA_VERIFY(cudaEventSynchronize(event_));
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/DeviceUtils.h b/faiss/gpu_cuda/utils/DeviceUtils.h
deleted file mode 100644
index 3b1326d194817eed42765e75840eda0685812e83..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/DeviceUtils.h
+++ /dev/null
@@ -1,198 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cublas_v2.h>
-#include <cuda_runtime.h>
-#include <faiss/impl/FaissAssert.h>
-#include <vector>
-
-namespace faiss {
-namespace gpu {
-
-/// Returns the current thread-local GPU device
-int getCurrentDevice();
-
-/// Sets the current thread-local GPU device
-void setCurrentDevice(int device);
-
-/// Returns the number of available GPU devices
-int getNumDevices();
-
-/// Starts the CUDA profiler (exposed via SWIG)
-void profilerStart();
-
-/// Stops the CUDA profiler (exposed via SWIG)
-void profilerStop();
-
-/// Synchronizes the CPU against all devices (equivalent to
-/// cudaDeviceSynchronize for each device)
-void synchronizeAllDevices();
-
-/// Returns a cached cudaDeviceProp for the given device
-const cudaDeviceProp& getDeviceProperties(int device);
-
-/// Returns the cached cudaDeviceProp for the current device
-const cudaDeviceProp& getCurrentDeviceProperties();
-
-/// Returns the maximum number of threads available for the given GPU
-/// device
-int getMaxThreads(int device);
-
-/// Equivalent to getMaxThreads(getCurrentDevice())
-int getMaxThreadsCurrentDevice();
-
-/// Returns the maximum smem available for the given GPU device
-size_t getMaxSharedMemPerBlock(int device);
-
-/// Equivalent to getMaxSharedMemPerBlock(getCurrentDevice())
-size_t getMaxSharedMemPerBlockCurrentDevice();
-
-/// For a given pointer, returns whether or not it is located on
-/// a device (deviceId >= 0) or the host (-1).
-int getDeviceForAddress(const void* p);
-
-/// Does the given device support full unified memory sharing host
-/// memory?
-bool getFullUnifiedMemSupport(int device);
-
-/// Equivalent to getFullUnifiedMemSupport(getCurrentDevice())
-bool getFullUnifiedMemSupportCurrentDevice();
-
-/// Does the given device support tensor core operations?
-bool getTensorCoreSupport(int device);
-
-/// Equivalent to getTensorCoreSupport(getCurrentDevice())
-bool getTensorCoreSupportCurrentDevice();
-
-/// Returns the maximum k-selection value supported based on the CUDA SDK that
-/// we were compiled with. .cu files can use DeviceDefs.cuh, but this is for
-/// non-CUDA files
-int getMaxKSelection();
-
-/// RAII object to set the current device, and restore the previous
-/// device upon destruction
-class DeviceScope {
-   public:
-    explicit DeviceScope(int device);
-    ~DeviceScope();
-
-   private:
-    int prevDevice_;
-};
-
-/// RAII object to manage a cublasHandle_t
-class CublasHandleScope {
-   public:
-    CublasHandleScope();
-    ~CublasHandleScope();
-
-    cublasHandle_t get() {
-        return blasHandle_;
-    }
-
-   private:
-    cublasHandle_t blasHandle_;
-};
-
-// RAII object to manage a cudaEvent_t
-class CudaEvent {
-   public:
-    /// Creates an event and records it in this stream
-    explicit CudaEvent(cudaStream_t stream, bool timer = false);
-    CudaEvent(const CudaEvent& event) = delete;
-    CudaEvent(CudaEvent&& event) noexcept;
-    ~CudaEvent();
-
-    inline cudaEvent_t get() {
-        return event_;
-    }
-
-    /// Wait on this event in this stream
-    void streamWaitOnEvent(cudaStream_t stream);
-
-    /// Have the CPU wait for the completion of this event
-    void cpuWaitOnEvent();
-
-    CudaEvent& operator=(CudaEvent&& event) noexcept;
-    CudaEvent& operator=(CudaEvent& event) = delete;
-
-   private:
-    cudaEvent_t event_;
-};
-
-/// Wrapper to test return status of CUDA functions
-#define CUDA_VERIFY(X)                      \
-    do {                                    \
-        auto err__ = (X);                   \
-        FAISS_ASSERT_FMT(                   \
-                err__ == cudaSuccess,       \
-                "CUDA error %d %s",         \
-                (int)err__,                 \
-                cudaGetErrorString(err__)); \
-    } while (0)
-
-/// Wrapper to synchronously probe for CUDA errors
-// #define FAISS_GPU_SYNC_ERROR 1
-
-#ifdef FAISS_GPU_SYNC_ERROR
-#define CUDA_TEST_ERROR()                     \
-    do {                                      \
-        CUDA_VERIFY(cudaDeviceSynchronize()); \
-    } while (0)
-#else
-#define CUDA_TEST_ERROR()                \
-    do {                                 \
-        CUDA_VERIFY(cudaGetLastError()); \
-    } while (0)
-#endif
-
-/// Call for a collection of streams to wait on
-template <typename L1, typename L2>
-void streamWaitBase(const L1& listWaiting, const L2& listWaitOn) {
-    // For all the streams we are waiting on, create an event
-    std::vector<cudaEvent_t> events;
-    for (auto& stream : listWaitOn) {
-        cudaEvent_t event;
-        CUDA_VERIFY(cudaEventCreateWithFlags(&event, cudaEventDisableTiming));
-        CUDA_VERIFY(cudaEventRecord(event, stream));
-        events.push_back(event);
-    }
-
-    // For all the streams that are waiting, issue a wait
-    for (auto& stream : listWaiting) {
-        for (auto& event : events) {
-            CUDA_VERIFY(cudaStreamWaitEvent(stream, event, 0));
-        }
-    }
-
-    for (auto& event : events) {
-        CUDA_VERIFY(cudaEventDestroy(event));
-    }
-}
-
-/// These versions allow usage of initializer_list as arguments, since
-/// otherwise {...} doesn't have a type
-template <typename L1>
-void streamWait(const L1& a, const std::initializer_list<cudaStream_t>& b) {
-    streamWaitBase(a, b);
-}
-
-template <typename L2>
-void streamWait(const std::initializer_list<cudaStream_t>& a, const L2& b) {
-    streamWaitBase(a, b);
-}
-
-inline void streamWait(
-        const std::initializer_list<cudaStream_t>& a,
-        const std::initializer_list<cudaStream_t>& b) {
-    streamWaitBase(a, b);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/DeviceVector.cuh b/faiss/gpu_cuda/utils/DeviceVector.cuh
deleted file mode 100644
index 132adae55a93bf3bbec138ef40ed52fee6be2fa1..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/DeviceVector.cuh
+++ /dev/null
@@ -1,229 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda.h>
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/impl/FaissAssert.h>
-#include <algorithm>
-#include <vector>
-
-namespace faiss {
-namespace gpu {
-
-/// A simple version of thrust::device_vector<T>, but has more control
-/// over whether resize() initializes new space with T() (which we
-/// don't want), and control on how much the reserved space grows by
-/// upon resize/reserve. It is also meant for POD types only.
-///
-/// Any new memory allocated is automatically zeroed before being presented to
-/// the user.
-template <typename T>
-class DeviceVector {
-   public:
-    DeviceVector(GpuResources* res, AllocInfo allocInfo)
-            : num_(0), capacity_(0), res_(res), allocInfo_(allocInfo) {
-        FAISS_ASSERT(res_);
-    }
-
-    ~DeviceVector() {
-        clear();
-    }
-
-    // Clear all allocated memory; reset to zero size
-    void clear() {
-        alloc_.release();
-        num_ = 0;
-        capacity_ = 0;
-    }
-
-    size_t size() const {
-        return num_;
-    }
-    size_t capacity() const {
-        return capacity_;
-    }
-    T* data() {
-        return (T*)alloc_.data;
-    }
-    const T* data() const {
-        return (const T*)alloc_.data;
-    }
-
-    template <typename OutT>
-    std::vector<OutT> copyToHost(cudaStream_t stream) const {
-        FAISS_ASSERT(num_ * sizeof(T) % sizeof(OutT) == 0);
-
-        std::vector<OutT> out((num_ * sizeof(T)) / sizeof(OutT));
-
-        if (num_ > 0) {
-            FAISS_ASSERT(data());
-            CUDA_VERIFY(cudaMemcpyAsync(
-                    out.data(),
-                    data(),
-                    num_ * sizeof(T),
-                    cudaMemcpyDeviceToHost,
-                    stream));
-        }
-
-        return out;
-    }
-
-    // Returns true if we actually reallocated memory
-    // If `reserveExact` is true, then we reserve only the memory that
-    // we need for what we're appending
-    bool append(
-            const T* d,
-            size_t n,
-            cudaStream_t stream,
-            bool reserveExact = false) {
-        bool mem = false;
-
-        if (n > 0) {
-            size_t reserveSize = num_ + n;
-            if (!reserveExact) {
-                reserveSize = getNewCapacity_(reserveSize);
-            }
-
-            mem = reserve(reserveSize, stream);
-
-            int dev = getDeviceForAddress(d);
-            if (dev == -1) {
-                CUDA_VERIFY(cudaMemcpyAsync(
-                        data() + num_,
-                        d,
-                        n * sizeof(T),
-                        cudaMemcpyHostToDevice,
-                        stream));
-            } else {
-                CUDA_VERIFY(cudaMemcpyAsync(
-                        data() + num_,
-                        d,
-                        n * sizeof(T),
-                        cudaMemcpyDeviceToDevice,
-                        stream));
-            }
-            num_ += n;
-        }
-
-        return mem;
-    }
-
-    // Returns true if we actually reallocated memory
-    bool resize(size_t newSize, cudaStream_t stream) {
-        bool mem = false;
-
-        if (num_ < newSize) {
-            mem = reserve(getNewCapacity_(newSize), stream);
-        }
-
-        // Don't bother zero initializing the newly accessible memory
-        // (unlike thrust::device_vector)
-        num_ = newSize;
-
-        return mem;
-    }
-
-    // Clean up after oversized allocations, while leaving some space to
-    // remain for subsequent allocations (if `exact` false) or to
-    // exactly the space we need (if `exact` true); returns space
-    // reclaimed in bytes
-    size_t reclaim(bool exact, cudaStream_t stream) {
-        size_t free = capacity_ - num_;
-
-        if (exact) {
-            realloc_(num_, stream);
-            return free * sizeof(T);
-        }
-
-        // If more than 1/4th of the space is free, then we want to
-        // truncate to only having 1/8th of the space free; this still
-        // preserves some space for new elements, but won't force us to
-        // double our size right away
-        if (free > (capacity_ / 4)) {
-            size_t newFree = capacity_ / 8;
-            size_t newCapacity = num_ + newFree;
-
-            size_t oldCapacity = capacity_;
-            FAISS_ASSERT(newCapacity < oldCapacity);
-
-            realloc_(newCapacity, stream);
-
-            return (oldCapacity - newCapacity) * sizeof(T);
-        }
-
-        return 0;
-    }
-
-    // Returns true if we actually reallocated memory
-    bool reserve(size_t newCapacity, cudaStream_t stream) {
-        if (newCapacity <= capacity_) {
-            return false;
-        }
-
-        // Otherwise, we need new space.
-        realloc_(newCapacity, stream);
-        return true;
-    }
-
-   private:
-    void realloc_(size_t newCapacity, cudaStream_t stream) {
-        FAISS_ASSERT(num_ <= newCapacity);
-
-        size_t newSizeInBytes = newCapacity * sizeof(T);
-        size_t oldSizeInBytes = num_ * sizeof(T);
-
-        // The new allocation will occur on this stream
-        allocInfo_.stream = stream;
-
-        auto newAlloc = res_->allocMemoryHandle(
-                AllocRequest(allocInfo_, newSizeInBytes));
-
-        // Copy over any old data
-        CUDA_VERIFY(cudaMemcpyAsync(
-                newAlloc.data,
-                data(),
-                oldSizeInBytes,
-                cudaMemcpyDeviceToDevice,
-                stream));
-
-        // Zero out the new space past the data we just copied
-        CUDA_VERIFY(cudaMemsetAsync(
-                (uint8_t*)newAlloc.data + oldSizeInBytes,
-                0,
-                newSizeInBytes - oldSizeInBytes,
-                stream));
-
-        alloc_ = std::move(newAlloc);
-        capacity_ = newCapacity;
-    }
-
-    size_t getNewCapacity_(size_t preferredSize) {
-        return utils::nextHighestPowerOf2(preferredSize);
-    }
-
-    /// Our current memory allocation, if any
-    GpuMemoryReservation alloc_;
-
-    /// current valid number of T present
-    size_t num_;
-
-    /// current space of T present (bytes is sizeof(T) * capacity_)
-    size_t capacity_;
-
-    /// Where we should allocate memory
-    GpuResources* res_;
-
-    /// How we should allocate memory
-    AllocInfo allocInfo_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/Float16.cuh b/faiss/gpu_cuda/utils/Float16.cuh
deleted file mode 100644
index 42fb9878b94e2c87f124d3c7fb03c42c1db4d64e..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/Float16.cuh
+++ /dev/null
@@ -1,73 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda.h>
-#include <faiss/gpu/GpuResources.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-
-// Some compute capabilities have full float16 ALUs.
-#if __CUDA_ARCH__ >= 530
-#define FAISS_USE_FULL_FLOAT16 1
-#endif // __CUDA_ARCH__ types
-
-#include <cuda_fp16.h>
-
-namespace faiss {
-namespace gpu {
-
-// 64 bytes containing 4 half (float16) values
-struct Half4 {
-    half2 a;
-    half2 b;
-};
-
-inline __device__ float4 half4ToFloat4(Half4 v) {
-    float2 a = __half22float2(v.a);
-    float2 b = __half22float2(v.b);
-
-    float4 out;
-    out.x = a.x;
-    out.y = a.y;
-    out.z = b.x;
-    out.w = b.y;
-
-    return out;
-}
-
-inline __device__ Half4 float4ToHalf4(float4 v) {
-    float2 a;
-    a.x = v.x;
-    a.y = v.y;
-
-    float2 b;
-    b.x = v.z;
-    b.y = v.w;
-
-    Half4 out;
-    out.a = __float22half2_rn(a);
-    out.b = __float22half2_rn(b);
-
-    return out;
-}
-
-// 128 bytes containing 8 half (float16) values
-struct Half8 {
-    Half4 a;
-    Half4 b;
-};
-
-/// Returns true if the given device supports native float16 math
-inline bool getDeviceSupportsFloat16Math(int device) {
-    const auto& prop = getDeviceProperties(device);
-
-    return (prop.major >= 6 || (prop.major == 5 && prop.minor >= 3));
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/HostTensor-inl.cuh b/faiss/gpu_cuda/utils/HostTensor-inl.cuh
deleted file mode 100644
index 5b093fb19bd6a1effff9cae9618f030319361ef0..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/HostTensor-inl.cuh
+++ /dev/null
@@ -1,237 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-namespace faiss {
-namespace gpu {
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>::HostTensor()
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(),
-          state_(AllocState::NotOwner) {}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>::~HostTensor() {
-    if (state_ == AllocState::Owner) {
-        FAISS_ASSERT(this->data_ != nullptr);
-        delete[] this->data_;
-        this->data_ = nullptr;
-    }
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>::HostTensor(
-        HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>&& t)
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(),
-          state_(AllocState::NotOwner) {
-    this->operator=(std::move(t));
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>& HostTensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::
-operator=(HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>&& t) {
-    if (this->state_ == AllocState::Owner) {
-        FAISS_ASSERT(this->data_ != nullptr);
-        delete[] this->data_;
-        this->data_ = nullptr;
-    }
-
-    this->Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::operator=(
-            std::move(t));
-
-    this->state_ = t.state_;
-    t.state_ = AllocState::NotOwner;
-
-    return *this;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>::HostTensor(
-        const IndexT sizes[Dim])
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(nullptr, sizes),
-          state_(AllocState::Owner) {
-    this->data_ = new T[this->numElements()];
-    FAISS_ASSERT(this->data_ != nullptr);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>::HostTensor(
-        std::initializer_list<IndexT> sizes)
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(nullptr, sizes),
-          state_(AllocState::Owner) {
-    this->data_ = new T[this->numElements()];
-    FAISS_ASSERT(this->data_ != nullptr);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>::HostTensor(
-        DataPtrType data,
-        const IndexT sizes[Dim])
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(data, sizes),
-          state_(AllocState::NotOwner) {}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>::HostTensor(
-        DataPtrType data,
-        std::initializer_list<IndexT> sizes)
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(data, sizes),
-          state_(AllocState::NotOwner) {}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>::HostTensor(
-        DataPtrType data,
-        const IndexT sizes[Dim],
-        const IndexT strides[Dim])
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(data, sizes, strides),
-          state_(AllocState::NotOwner) {}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>::HostTensor(
-        const Tensor<T, Dim, InnerContig, IndexT, PtrTraits>& t,
-        cudaStream_t stream)
-        : Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(
-                  nullptr,
-                  t.sizes(),
-                  t.strides()),
-          state_(AllocState::Owner) {
-    // Only contiguous arrays handled for now
-    FAISS_ASSERT(t.isContiguous());
-
-    this->data_ = new T[t.numElements()];
-    this->copyFrom(t, stream);
-}
-
-/// Call to zero out memory
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>& HostTensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::zero() {
-    // Region must be contiguous
-    FAISS_ASSERT(this->isContiguous());
-
-    if (this->data_ != nullptr) {
-        memset(this->data_, 0, this->getSizeInBytes());
-    }
-
-    return *this;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ T HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>::maxDiff(
-        const HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>& t) const {
-    auto size = this->numElements();
-
-    FAISS_ASSERT(size == t.numElements());
-    FAISS_ASSERT(size > 0);
-
-    if (InnerContig) {
-        auto a = this->data();
-        auto b = t.data();
-
-        T maxDiff = a[0] - b[0];
-        // FIXME: type-specific abs()
-        maxDiff = maxDiff < 0 ? maxDiff * (T)-1 : maxDiff;
-
-        for (IndexT i = 1; i < size; ++i) {
-            auto diff = a[i] - b[i];
-            // FIXME: type-specific abs
-            diff = diff < 0 ? diff * (T)-1 : diff;
-            if (diff > maxDiff) {
-                maxDiff = diff;
-            }
-        }
-
-        return maxDiff;
-    } else {
-        // non-contiguous
-        // FIXME
-        FAISS_ASSERT(false);
-        return (T)0;
-    }
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/HostTensor.cuh b/faiss/gpu_cuda/utils/HostTensor.cuh
deleted file mode 100644
index e83e885706cc8ff6d5c294ab02e25990da11d4bd..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/HostTensor.cuh
+++ /dev/null
@@ -1,93 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig = false,
-        typename IndexT = int,
-        template <typename U> class PtrTraits = traits::DefaultPtrTraits>
-class HostTensor : public Tensor<T, Dim, InnerContig, IndexT, PtrTraits> {
-   public:
-    typedef IndexT IndexType;
-    typedef typename PtrTraits<T>::PtrType DataPtrType;
-
-    /// Default constructor
-    __host__ HostTensor();
-
-    /// Destructor
-    __host__ ~HostTensor();
-
-    /// Move constructor
-    __host__ HostTensor(HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>&& t);
-
-    /// Move assignment
-    __host__ HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>& operator=(
-            HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>&& t);
-
-    /// Constructs a tensor of the given size, allocating memory for it
-    /// locally
-    __host__ HostTensor(const IndexT sizes[Dim]);
-    __host__ HostTensor(std::initializer_list<IndexT> sizes);
-
-    /// Constructs a tensor of the given size and stride, referencing a
-    /// memory region we do not own
-    __host__ HostTensor(DataPtrType data, const IndexT sizes[Dim]);
-    __host__ HostTensor(DataPtrType data, std::initializer_list<IndexT> sizes);
-
-    /// Constructs a tensor of the given size and stride, referencing a
-    /// memory region we do not own
-    __host__ HostTensor(
-            DataPtrType data,
-            const IndexT sizes[Dim],
-            const IndexT strides[Dim]);
-
-    /// Copies a tensor into ourselves, allocating memory for it
-    /// locally. If the tensor is on the GPU, then we will copy it to
-    /// ourselves wrt the given stream.
-    __host__ HostTensor(
-            const Tensor<T, Dim, InnerContig, IndexT, PtrTraits>& t,
-            cudaStream_t stream);
-
-    /// Call to zero out memory
-    __host__ HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>& zero();
-
-    /// Returns the maximum difference seen between two tensors
-    __host__ T
-    maxDiff(const HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>& t) const;
-
-    /// Are the two tensors exactly equal?
-    __host__ bool equal(
-            const HostTensor<T, Dim, InnerContig, IndexT, PtrTraits>& t) const {
-        return (maxDiff(t) == (T)0);
-    }
-
-   private:
-    enum AllocState {
-        /// This tensor itself owns the memory, which must be freed via
-        /// cudaFree
-        Owner,
-
-        /// This tensor itself is not an owner of the memory; there is
-        /// nothing to free
-        NotOwner,
-    };
-
-    AllocState state_;
-};
-
-} // namespace gpu
-} // namespace faiss
-
-#include <faiss/gpu/utils/HostTensor-inl.cuh>
diff --git a/faiss/gpu_cuda/utils/Limits.cuh b/faiss/gpu_cuda/utils/Limits.cuh
deleted file mode 100644
index 9ab3b712e77f14d22f22702ac6717264328db9ac..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/Limits.cuh
+++ /dev/null
@@ -1,82 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/Pair.cuh>
-#include <limits>
-
-namespace faiss {
-namespace gpu {
-
-template <typename T>
-struct Limits {};
-
-// Unfortunately we can't use constexpr because there is no
-// constexpr constructor for half
-// FIXME: faiss CPU uses +/-FLT_MAX instead of +/-infinity
-constexpr float kFloatMax = std::numeric_limits<float>::max();
-constexpr float kFloatMin = std::numeric_limits<float>::lowest();
-
-template <>
-struct Limits<float> {
-    static __device__ __host__ inline float getMin() {
-        return kFloatMin;
-    }
-    static __device__ __host__ inline float getMax() {
-        return kFloatMax;
-    }
-};
-
-inline __device__ __host__ half kGetHalf(unsigned short v) {
-#if CUDA_VERSION >= 9000
-    __half_raw h;
-    h.x = v;
-    return __half(h);
-#else
-    half h;
-    h.x = v;
-    return h;
-#endif
-}
-
-template <>
-struct Limits<half> {
-    static __device__ __host__ inline half getMin() {
-        return kGetHalf(0xfbffU);
-    }
-    static __device__ __host__ inline half getMax() {
-        return kGetHalf(0x7bffU);
-    }
-};
-
-constexpr int kIntMax = std::numeric_limits<int>::max();
-constexpr int kIntMin = std::numeric_limits<int>::lowest();
-
-template <>
-struct Limits<int> {
-    static __device__ __host__ inline int getMin() {
-        return kIntMin;
-    }
-    static __device__ __host__ inline int getMax() {
-        return kIntMax;
-    }
-};
-
-template <typename K, typename V>
-struct Limits<Pair<K, V>> {
-    static __device__ __host__ inline Pair<K, V> getMin() {
-        return Pair<K, V>(Limits<K>::getMin(), Limits<V>::getMin());
-    }
-
-    static __device__ __host__ inline Pair<K, V> getMax() {
-        return Pair<K, V>(Limits<K>::getMax(), Limits<V>::getMax());
-    }
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/LoadStoreOperators.cuh b/faiss/gpu_cuda/utils/LoadStoreOperators.cuh
deleted file mode 100644
index a342c400754c09c33bac2732eb75d965da3abb2d..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/LoadStoreOperators.cuh
+++ /dev/null
@@ -1,101 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/Float16.cuh>
-
-#ifndef __HALF2_TO_UI
-// cuda_fp16.hpp doesn't export this
-#define __HALF2_TO_UI(var) *(reinterpret_cast<unsigned int*>(&(var)))
-#endif
-
-//
-// Templated wrappers to express load/store for different scalar and vector
-// types, so kernels can have the same written form but can operate
-// over half and float, and on vector types transparently
-//
-
-namespace faiss {
-namespace gpu {
-
-template <typename T>
-struct LoadStore {
-    static inline __device__ T load(void* p) {
-        return *((T*)p);
-    }
-
-    static inline __device__ void store(void* p, const T& v) {
-        *((T*)p) = v;
-    }
-};
-
-template <>
-struct LoadStore<Half4> {
-    static inline __device__ Half4 load(void* p) {
-        Half4 out;
-#if CUDA_VERSION >= 9000
-        asm("ld.global.v2.u32 {%0, %1}, [%2];"
-            : "=r"(__HALF2_TO_UI(out.a)), "=r"(__HALF2_TO_UI(out.b))
-            : "l"(p));
-#else
-        asm("ld.global.v2.u32 {%0, %1}, [%2];"
-            : "=r"(out.a.x), "=r"(out.b.x)
-            : "l"(p));
-#endif
-        return out;
-    }
-
-    static inline __device__ void store(void* p, Half4& v) {
-#if CUDA_VERSION >= 9000
-        asm("st.v2.u32 [%0], {%1, %2};"
-            :
-            : "l"(p), "r"(__HALF2_TO_UI(v.a)), "r"(__HALF2_TO_UI(v.b)));
-#else
-        asm("st.v2.u32 [%0], {%1, %2};" : : "l"(p), "r"(v.a.x), "r"(v.b.x));
-#endif
-    }
-};
-
-template <>
-struct LoadStore<Half8> {
-    static inline __device__ Half8 load(void* p) {
-        Half8 out;
-#if CUDA_VERSION >= 9000
-        asm("ld.global.v4.u32 {%0, %1, %2, %3}, [%4];"
-            : "=r"(__HALF2_TO_UI(out.a.a)),
-              "=r"(__HALF2_TO_UI(out.a.b)),
-              "=r"(__HALF2_TO_UI(out.b.a)),
-              "=r"(__HALF2_TO_UI(out.b.b))
-            : "l"(p));
-#else
-        asm("ld.global.v4.u32 {%0, %1, %2, %3}, [%4];"
-            : "=r"(out.a.a.x), "=r"(out.a.b.x), "=r"(out.b.a.x), "=r"(out.b.b.x)
-            : "l"(p));
-#endif
-        return out;
-    }
-
-    static inline __device__ void store(void* p, Half8& v) {
-#if CUDA_VERSION >= 9000
-        asm("st.v4.u32 [%0], {%1, %2, %3, %4};"
-            :
-            : "l"(p),
-              "r"(__HALF2_TO_UI(v.a.a)),
-              "r"(__HALF2_TO_UI(v.a.b)),
-              "r"(__HALF2_TO_UI(v.b.a)),
-              "r"(__HALF2_TO_UI(v.b.b)));
-#else
-        asm("st.v4.u32 [%0], {%1, %2, %3, %4};"
-            :
-            : "l"(p), "r"(v.a.a.x), "r"(v.a.b.x), "r"(v.b.a.x), "r"(v.b.b.x));
-#endif
-    }
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/MathOperators.cuh b/faiss/gpu_cuda/utils/MathOperators.cuh
deleted file mode 100644
index 2b2bf7d64ba5e469328743b16448c000b7cb40b0..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/MathOperators.cuh
+++ /dev/null
@@ -1,560 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/ConversionOperators.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-
-//
-// Templated wrappers to express math for different scalar and vector
-// types, so kernels can have the same written form but can operate
-// over half and float, and on vector types transparently
-//
-
-namespace faiss {
-namespace gpu {
-
-template <typename T>
-struct Math {
-    typedef T ScalarType;
-
-    static inline __device__ T add(T a, T b) {
-        return a + b;
-    }
-
-    static inline __device__ T sub(T a, T b) {
-        return a - b;
-    }
-
-    static inline __device__ T mul(T a, T b) {
-        return a * b;
-    }
-
-    static inline __device__ T neg(T v) {
-        return -v;
-    }
-
-    /// For a vector type, this is a horizontal add, returning sum(v_i)
-    static inline __device__ float reduceAdd(T v) {
-        return ConvertTo<float>::to(v);
-    }
-
-    static inline __device__ bool lt(T a, T b) {
-        return a < b;
-    }
-
-    static inline __device__ bool gt(T a, T b) {
-        return a > b;
-    }
-
-    static inline __device__ bool eq(T a, T b) {
-        return a == b;
-    }
-
-    static inline __device__ T zero() {
-        return (T)0;
-    }
-};
-
-template <>
-struct Math<float2> {
-    typedef float ScalarType;
-
-    static inline __device__ float2 add(float2 a, float2 b) {
-        float2 v;
-        v.x = a.x + b.x;
-        v.y = a.y + b.y;
-        return v;
-    }
-
-    static inline __device__ float2 sub(float2 a, float2 b) {
-        float2 v;
-        v.x = a.x - b.x;
-        v.y = a.y - b.y;
-        return v;
-    }
-
-    static inline __device__ float2 add(float2 a, float b) {
-        float2 v;
-        v.x = a.x + b;
-        v.y = a.y + b;
-        return v;
-    }
-
-    static inline __device__ float2 sub(float2 a, float b) {
-        float2 v;
-        v.x = a.x - b;
-        v.y = a.y - b;
-        return v;
-    }
-
-    static inline __device__ float2 mul(float2 a, float2 b) {
-        float2 v;
-        v.x = a.x * b.x;
-        v.y = a.y * b.y;
-        return v;
-    }
-
-    static inline __device__ float2 mul(float2 a, float b) {
-        float2 v;
-        v.x = a.x * b;
-        v.y = a.y * b;
-        return v;
-    }
-
-    static inline __device__ float2 neg(float2 v) {
-        v.x = -v.x;
-        v.y = -v.y;
-        return v;
-    }
-
-    /// For a vector type, this is a horizontal add, returning sum(v_i)
-    static inline __device__ float reduceAdd(float2 v) {
-        return v.x + v.y;
-    }
-
-    // not implemented for vector types
-    // static inline __device__ bool lt(float2 a, float2 b);
-    // static inline __device__ bool gt(float2 a, float2 b);
-    // static inline __device__ bool eq(float2 a, float2 b);
-
-    static inline __device__ float2 zero() {
-        float2 v;
-        v.x = 0.0f;
-        v.y = 0.0f;
-        return v;
-    }
-};
-
-template <>
-struct Math<float4> {
-    typedef float ScalarType;
-
-    static inline __device__ float4 add(float4 a, float4 b) {
-        float4 v;
-        v.x = a.x + b.x;
-        v.y = a.y + b.y;
-        v.z = a.z + b.z;
-        v.w = a.w + b.w;
-        return v;
-    }
-
-    static inline __device__ float4 sub(float4 a, float4 b) {
-        float4 v;
-        v.x = a.x - b.x;
-        v.y = a.y - b.y;
-        v.z = a.z - b.z;
-        v.w = a.w - b.w;
-        return v;
-    }
-
-    static inline __device__ float4 add(float4 a, float b) {
-        float4 v;
-        v.x = a.x + b;
-        v.y = a.y + b;
-        v.z = a.z + b;
-        v.w = a.w + b;
-        return v;
-    }
-
-    static inline __device__ float4 sub(float4 a, float b) {
-        float4 v;
-        v.x = a.x - b;
-        v.y = a.y - b;
-        v.z = a.z - b;
-        v.w = a.w - b;
-        return v;
-    }
-
-    static inline __device__ float4 mul(float4 a, float4 b) {
-        float4 v;
-        v.x = a.x * b.x;
-        v.y = a.y * b.y;
-        v.z = a.z * b.z;
-        v.w = a.w * b.w;
-        return v;
-    }
-
-    static inline __device__ float4 mul(float4 a, float b) {
-        float4 v;
-        v.x = a.x * b;
-        v.y = a.y * b;
-        v.z = a.z * b;
-        v.w = a.w * b;
-        return v;
-    }
-
-    static inline __device__ float4 neg(float4 v) {
-        v.x = -v.x;
-        v.y = -v.y;
-        v.z = -v.z;
-        v.w = -v.w;
-        return v;
-    }
-
-    /// For a vector type, this is a horizontal add, returning sum(v_i)
-    static inline __device__ float reduceAdd(float4 v) {
-        return v.x + v.y + v.z + v.w;
-    }
-
-    // not implemented for vector types
-    // static inline __device__ bool lt(float4 a, float4 b);
-    // static inline __device__ bool gt(float4 a, float4 b);
-    // static inline __device__ bool eq(float4 a, float4 b);
-
-    static inline __device__ float4 zero() {
-        float4 v;
-        v.x = 0.0f;
-        v.y = 0.0f;
-        v.z = 0.0f;
-        v.w = 0.0f;
-        return v;
-    }
-};
-
-template <>
-struct Math<half> {
-    typedef half ScalarType;
-
-    static inline __device__ half add(half a, half b) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        return __hadd(a, b);
-#else
-        return __float2half(__half2float(a) + __half2float(b));
-#endif
-    }
-
-    static inline __device__ half sub(half a, half b) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        return __hsub(a, b);
-#else
-        return __float2half(__half2float(a) - __half2float(b));
-#endif
-    }
-
-    static inline __device__ half mul(half a, half b) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        return __hmul(a, b);
-#else
-        return __float2half(__half2float(a) * __half2float(b));
-#endif
-    }
-
-    static inline __device__ half neg(half v) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        return __hneg(v);
-#else
-        return __float2half(-__half2float(v));
-#endif
-    }
-
-    static inline __device__ float reduceAdd(half v) {
-        return ConvertTo<float>::to(v);
-    }
-
-    static inline __device__ bool lt(half a, half b) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        return __hlt(a, b);
-#else
-        return __half2float(a) < __half2float(b);
-#endif
-    }
-
-    static inline __device__ bool gt(half a, half b) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        return __hgt(a, b);
-#else
-        return __half2float(a) > __half2float(b);
-#endif
-    }
-
-    static inline __device__ bool eq(half a, half b) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        return __heq(a, b);
-#else
-        return __half2float(a) == __half2float(b);
-#endif
-    }
-
-    static inline __device__ half zero() {
-#if CUDA_VERSION >= 9000
-        return 0;
-#else
-        half h;
-        h.x = 0;
-        return h;
-#endif
-    }
-};
-
-template <>
-struct Math<half2> {
-    typedef half ScalarType;
-
-    static inline __device__ half2 add(half2 a, half2 b) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        return __hadd2(a, b);
-#else
-        float2 af = __half22float2(a);
-        float2 bf = __half22float2(b);
-
-        af.x += bf.x;
-        af.y += bf.y;
-
-        return __float22half2_rn(af);
-#endif
-    }
-
-    static inline __device__ half2 sub(half2 a, half2 b) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        return __hsub2(a, b);
-#else
-        float2 af = __half22float2(a);
-        float2 bf = __half22float2(b);
-
-        af.x -= bf.x;
-        af.y -= bf.y;
-
-        return __float22half2_rn(af);
-#endif
-    }
-
-    static inline __device__ half2 add(half2 a, half b) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        half2 b2 = __half2half2(b);
-        return __hadd2(a, b2);
-#else
-        float2 af = __half22float2(a);
-        float bf = __half2float(b);
-
-        af.x += bf;
-        af.y += bf;
-
-        return __float22half2_rn(af);
-#endif
-    }
-
-    static inline __device__ half2 sub(half2 a, half b) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        half2 b2 = __half2half2(b);
-        return __hsub2(a, b2);
-#else
-        float2 af = __half22float2(a);
-        float bf = __half2float(b);
-
-        af.x -= bf;
-        af.y -= bf;
-
-        return __float22half2_rn(af);
-#endif
-    }
-
-    static inline __device__ half2 mul(half2 a, half2 b) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        return __hmul2(a, b);
-#else
-        float2 af = __half22float2(a);
-        float2 bf = __half22float2(b);
-
-        af.x *= bf.x;
-        af.y *= bf.y;
-
-        return __float22half2_rn(af);
-#endif
-    }
-
-    static inline __device__ half2 mul(half2 a, half b) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        half2 b2 = __half2half2(b);
-        return __hmul2(a, b2);
-#else
-        float2 af = __half22float2(a);
-        float bf = __half2float(b);
-
-        af.x *= bf;
-        af.y *= bf;
-
-        return __float22half2_rn(af);
-#endif
-    }
-
-    static inline __device__ half2 neg(half2 v) {
-#ifdef FAISS_USE_FULL_FLOAT16
-        return __hneg2(v);
-#else
-        float2 vf = __half22float2(v);
-        vf.x = -vf.x;
-        vf.y = -vf.y;
-
-        return __float22half2_rn(vf);
-#endif
-    }
-
-    static inline __device__ float reduceAdd(half2 v) {
-        float2 vf = __half22float2(v);
-        vf.x += vf.y;
-
-        return vf.x;
-    }
-
-    // not implemented for vector types
-    // static inline __device__ bool lt(half2 a, half2 b);
-    // static inline __device__ bool gt(half2 a, half2 b);
-    // static inline __device__ bool eq(half2 a, half2 b);
-
-    static inline __device__ half2 zero() {
-        return __half2half2(Math<half>::zero());
-    }
-};
-
-template <>
-struct Math<Half4> {
-    typedef half ScalarType;
-
-    static inline __device__ Half4 add(Half4 a, Half4 b) {
-        Half4 h;
-        h.a = Math<half2>::add(a.a, b.a);
-        h.b = Math<half2>::add(a.b, b.b);
-        return h;
-    }
-
-    static inline __device__ Half4 sub(Half4 a, Half4 b) {
-        Half4 h;
-        h.a = Math<half2>::sub(a.a, b.a);
-        h.b = Math<half2>::sub(a.b, b.b);
-        return h;
-    }
-
-    static inline __device__ Half4 add(Half4 a, half b) {
-        Half4 h;
-        h.a = Math<half2>::add(a.a, b);
-        h.b = Math<half2>::add(a.b, b);
-        return h;
-    }
-
-    static inline __device__ Half4 sub(Half4 a, half b) {
-        Half4 h;
-        h.a = Math<half2>::sub(a.a, b);
-        h.b = Math<half2>::sub(a.b, b);
-        return h;
-    }
-
-    static inline __device__ Half4 mul(Half4 a, Half4 b) {
-        Half4 h;
-        h.a = Math<half2>::mul(a.a, b.a);
-        h.b = Math<half2>::mul(a.b, b.b);
-        return h;
-    }
-
-    static inline __device__ Half4 mul(Half4 a, half b) {
-        Half4 h;
-        h.a = Math<half2>::mul(a.a, b);
-        h.b = Math<half2>::mul(a.b, b);
-        return h;
-    }
-
-    static inline __device__ Half4 neg(Half4 v) {
-        Half4 h;
-        h.a = Math<half2>::neg(v.a);
-        h.b = Math<half2>::neg(v.b);
-        return h;
-    }
-
-    static inline __device__ float reduceAdd(Half4 v) {
-        float x = Math<half2>::reduceAdd(v.a);
-        float y = Math<half2>::reduceAdd(v.b);
-        return x + y;
-    }
-
-    // not implemented for vector types
-    // static inline __device__ bool lt(Half4 a, Half4 b);
-    // static inline __device__ bool gt(Half4 a, Half4 b);
-    // static inline __device__ bool eq(Half4 a, Half4 b);
-
-    static inline __device__ Half4 zero() {
-        Half4 h;
-        h.a = Math<half2>::zero();
-        h.b = Math<half2>::zero();
-        return h;
-    }
-};
-
-template <>
-struct Math<Half8> {
-    typedef half ScalarType;
-
-    static inline __device__ Half8 add(Half8 a, Half8 b) {
-        Half8 h;
-        h.a = Math<Half4>::add(a.a, b.a);
-        h.b = Math<Half4>::add(a.b, b.b);
-        return h;
-    }
-
-    static inline __device__ Half8 sub(Half8 a, Half8 b) {
-        Half8 h;
-        h.a = Math<Half4>::sub(a.a, b.a);
-        h.b = Math<Half4>::sub(a.b, b.b);
-        return h;
-    }
-
-    static inline __device__ Half8 add(Half8 a, half b) {
-        Half8 h;
-        h.a = Math<Half4>::add(a.a, b);
-        h.b = Math<Half4>::add(a.b, b);
-        return h;
-    }
-
-    static inline __device__ Half8 sub(Half8 a, half b) {
-        Half8 h;
-        h.a = Math<Half4>::sub(a.a, b);
-        h.b = Math<Half4>::sub(a.b, b);
-        return h;
-    }
-
-    static inline __device__ Half8 mul(Half8 a, Half8 b) {
-        Half8 h;
-        h.a = Math<Half4>::mul(a.a, b.a);
-        h.b = Math<Half4>::mul(a.b, b.b);
-        return h;
-    }
-
-    static inline __device__ Half8 mul(Half8 a, half b) {
-        Half8 h;
-        h.a = Math<Half4>::mul(a.a, b);
-        h.b = Math<Half4>::mul(a.b, b);
-        return h;
-    }
-
-    static inline __device__ Half8 neg(Half8 v) {
-        Half8 h;
-        h.a = Math<Half4>::neg(v.a);
-        h.b = Math<Half4>::neg(v.b);
-        return h;
-    }
-
-    static inline __device__ float reduceAdd(Half8 v) {
-        float x = Math<Half4>::reduceAdd(v.a);
-        float y = Math<Half4>::reduceAdd(v.b);
-        return x + y;
-    }
-
-    // not implemented for vector types
-    // static inline __device__ bool lt(Half8 a, Half8 b);
-    // static inline __device__ bool gt(Half8 a, Half8 b);
-    // static inline __device__ bool eq(Half8 a, Half8 b);
-
-    static inline __device__ Half8 zero() {
-        Half8 h;
-        h.a = Math<Half4>::zero();
-        h.b = Math<Half4>::zero();
-        return h;
-    }
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/MatrixMult-inl.cuh b/faiss/gpu_cuda/utils/MatrixMult-inl.cuh
deleted file mode 100644
index 03a96b6708088c0e0173d6b2c7452cb798745a07..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/MatrixMult-inl.cuh
+++ /dev/null
@@ -1,360 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cublas_v2.h>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-template <typename T>
-struct GetCudaType;
-
-template <>
-struct GetCudaType<float> {
-    static constexpr cudaDataType_t Type = CUDA_R_32F;
-};
-
-template <>
-struct GetCudaType<half> {
-    static constexpr cudaDataType_t Type = CUDA_R_16F;
-};
-
-template <typename AT, typename BT>
-cublasStatus_t rawGemm(
-        cublasHandle_t handle,
-        cublasOperation_t transa,
-        cublasOperation_t transb,
-        int m,
-        int n,
-        int k,
-        const float fAlpha,
-        const void* A,
-        int lda,
-        const void* B,
-        int ldb,
-        const float fBeta,
-        float* C,
-        int ldc) {
-    auto cAT = GetCudaType<AT>::Type;
-    auto cBT = GetCudaType<BT>::Type;
-
-    // FIXME: some weird CUDA 11 bug? where cublasSgemmEx on
-    // f16 (8, 64) x f16 (64, 64)' = f32 (8, 64) returns "not supported".
-    // cublasGemmEx using CUBLAS_COMPUTE_32F also fails, but
-    // CUBLAS_COMPUTE_32F_PEDANTIC does not fail (as seen on a V100).
-    //
-    // Only use the PEDANTIC implementation if the input matrices are f16
-    // and we are on CUDA 11+
-#if CUDA_VERSION >= 11000
-    if (cAT == CUDA_R_16F || cBT == CUDA_R_16F) {
-        return cublasGemmEx(
-                handle,
-                transa,
-                transb,
-                m,
-                n,
-                k,
-                &fAlpha,
-                A,
-                cAT,
-                lda,
-                B,
-                cBT,
-                ldb,
-                &fBeta,
-                C,
-                CUDA_R_32F,
-                ldc,
-                CUBLAS_COMPUTE_32F_PEDANTIC,
-                CUBLAS_GEMM_DEFAULT);
-    }
-#endif
-
-    // Always accumulate in f32
-    return cublasSgemmEx(
-            handle,
-            transa,
-            transb,
-            m,
-            n,
-            k,
-            &fAlpha,
-            A,
-            cAT,
-            lda,
-            B,
-            cBT,
-            ldb,
-            &fBeta,
-            C,
-            CUDA_R_32F,
-            ldc);
-}
-
-template <typename AT, typename BT>
-cublasStatus_t rawBatchGemm(
-        cublasHandle_t handle,
-        cublasOperation_t transa,
-        cublasOperation_t transb,
-        int m,
-        int n,
-        int k,
-        const float fAlpha,
-        const void* A,
-        int lda,
-        long long int strideA,
-        const void* B,
-        int ldb,
-        long long int strideB,
-        const float fBeta,
-        float* C,
-        int ldc,
-        long long int strideC,
-        int batchCount) {
-    auto cAT = GetCudaType<AT>::Type;
-    auto cBT = GetCudaType<BT>::Type;
-
-    // Always accumulate in f32
-    return cublasGemmStridedBatchedEx(
-            handle,
-            transa,
-            transb,
-            m,
-            n,
-            k,
-            &fAlpha,
-            A,
-            cAT,
-            lda,
-            strideA,
-            B,
-            cBT,
-            ldb,
-            strideB,
-            &fBeta,
-            C,
-            CUDA_R_32F,
-            ldc,
-            strideC,
-            batchCount,
-            CUDA_R_32F,
-            CUBLAS_GEMM_DEFAULT);
-}
-
-template <typename AT, typename BT>
-void runMatrixMult(
-        Tensor<float, 2, true>& c,
-        bool transC,
-        Tensor<AT, 2, true>& a,
-        bool transA,
-        Tensor<BT, 2, true>& b,
-        bool transB,
-        float alpha,
-        float beta,
-        cublasHandle_t handle,
-        cudaStream_t stream) {
-    cublasSetStream(handle, stream);
-
-    // Check that we have (m x k) * (k x n) = (m x n)
-    // using the input row-major layout
-    int aM = transA ? a.getSize(1) : a.getSize(0);
-    int aK = transA ? a.getSize(0) : a.getSize(1);
-
-    int bK = transB ? b.getSize(1) : b.getSize(0);
-    int bN = transB ? b.getSize(0) : b.getSize(1);
-
-    int cM = transC ? c.getSize(1) : c.getSize(0);
-    int cN = transC ? c.getSize(0) : c.getSize(1);
-
-    FAISS_ASSERT(aM == cM);
-    FAISS_ASSERT(aK == bK);
-    FAISS_ASSERT(bN == cN);
-
-    FAISS_ASSERT(a.getStride(1) == 1);
-    FAISS_ASSERT(b.getStride(1) == 1);
-    FAISS_ASSERT(c.getStride(1) == 1);
-
-    // Now, we have to represent the matrix multiplication in
-    // column-major layout
-    float* pC = c.data();
-
-    int m = c.getSize(1); // stride 1 size
-    int n = c.getSize(0); // other size
-    int k = transA ? a.getSize(0) : a.getSize(1);
-
-    int lda = transC ? a.getStride(0) : b.getStride(0);
-    int ldb = transC ? b.getStride(0) : a.getStride(0);
-    int ldc = c.getStride(0);
-
-    auto gemmTrA = transB ? CUBLAS_OP_T : CUBLAS_OP_N;
-    auto gemmTrB = transA ? CUBLAS_OP_T : CUBLAS_OP_N;
-
-    if (transC) {
-        gemmTrA = transA ? CUBLAS_OP_N : CUBLAS_OP_T;
-        gemmTrB = transB ? CUBLAS_OP_N : CUBLAS_OP_T;
-    }
-
-    cublasStatus_t err;
-
-    if (transC) {
-        err = rawGemm<AT, BT>(
-                handle,
-                gemmTrA,
-                gemmTrB,
-                m,
-                n,
-                k,
-                alpha,
-                a.data(),
-                lda,
-                b.data(),
-                ldb,
-                beta,
-                pC,
-                ldc);
-    } else {
-        err = rawGemm<AT, BT>(
-                handle,
-                gemmTrA,
-                gemmTrB,
-                m,
-                n,
-                k,
-                alpha,
-                b.data(),
-                lda,
-                a.data(),
-                ldb,
-                beta,
-                pC,
-                ldc);
-    }
-
-    FAISS_ASSERT_FMT(
-            err == CUBLAS_STATUS_SUCCESS,
-            "cublas failed (%d): "
-            "(%d, %d)%s x (%d, %d)%s = (%d, %d)%s "
-            "gemm params m %d n %d k %d trA %s trB %s lda %d ldb %d ldc %d",
-            (int)err,
-            a.getSize(0),
-            a.getSize(1),
-            transA ? "'" : "",
-            b.getSize(0),
-            b.getSize(1),
-            transB ? "'" : "",
-            c.getSize(0),
-            c.getSize(1),
-            transC ? "'" : "",
-            m,
-            n,
-            k,
-            gemmTrA == CUBLAS_OP_T ? "T" : "N",
-            gemmTrB == CUBLAS_OP_T ? "T" : "N",
-            lda,
-            ldb,
-            ldc);
-    CUDA_TEST_ERROR();
-}
-
-template <typename AT, typename BT>
-void runBatchMatrixMult(
-        Tensor<float, 3, true>& c,
-        bool transC,
-        Tensor<AT, 3, true>& a,
-        bool transA,
-        Tensor<BT, 3, true>& b,
-        bool transB,
-        float alpha,
-        float beta,
-        cublasHandle_t handle,
-        cudaStream_t stream) {
-    FAISS_ASSERT(c.getSize(0) == a.getSize(0));
-    FAISS_ASSERT(a.getSize(0) == b.getSize(0));
-
-    // This uses the strided batch MM, which assumes a uniform stride
-    FAISS_ASSERT(a.getStride(0) == a.getSize(1) * a.getSize(2));
-    FAISS_ASSERT(b.getStride(0) == b.getSize(1) * b.getSize(2));
-    FAISS_ASSERT(c.getStride(0) == c.getSize(1) * c.getSize(2));
-
-    cublasSetStream(handle, stream);
-
-    // Check that we have (m x k) * (k x n) = (m x n)
-    // using the input row-major layout
-    int aM = transA ? a.getSize(2) : a.getSize(1);
-    int aK = transA ? a.getSize(1) : a.getSize(2);
-
-    int bK = transB ? b.getSize(2) : b.getSize(1);
-    int bN = transB ? b.getSize(1) : b.getSize(2);
-
-    int cM = transC ? c.getSize(2) : c.getSize(1);
-    int cN = transC ? c.getSize(1) : c.getSize(2);
-
-    FAISS_ASSERT(aM == cM);
-    FAISS_ASSERT(aK == bK);
-    FAISS_ASSERT(bN == cN);
-
-    // Now, we have to represent the matrix multiplication in
-    // column-major layout
-    void* pA = transC ? (void*)a.data() : (void*)b.data();
-    void* pB = transC ? (void*)b.data() : (void*)a.data();
-    float* pC = c.data();
-
-    int m = c.getSize(2); // stride 1 size
-    int n = c.getSize(1); // other size
-    int k = transA ? a.getSize(1) : a.getSize(2);
-
-    int lda = transC ? a.getStride(1) : b.getStride(1);
-    int ldb = transC ? b.getStride(1) : a.getStride(1);
-    int ldc = c.getStride(1);
-
-    auto gemmTrA = transB ? CUBLAS_OP_T : CUBLAS_OP_N;
-    auto gemmTrB = transA ? CUBLAS_OP_T : CUBLAS_OP_N;
-
-    if (transC) {
-        gemmTrA = transA ? CUBLAS_OP_N : CUBLAS_OP_T;
-        gemmTrB = transB ? CUBLAS_OP_N : CUBLAS_OP_T;
-    }
-
-    long long int gemmStrideA = transC ? a.getStride(0) : b.getStride(0);
-    long long int gemmStrideB = transC ? b.getStride(0) : a.getStride(0);
-    long long int gemmStrideC = c.getStride(0);
-
-    auto err = rawBatchGemm<AT, BT>(
-            handle,
-            gemmTrA,
-            gemmTrB,
-            m,
-            n,
-            k,
-            alpha,
-            pA,
-            lda,
-            gemmStrideA,
-            pB,
-            ldb,
-            gemmStrideB,
-            beta,
-            pC,
-            ldc,
-            gemmStrideC,
-            a.getSize(0));
-
-    FAISS_ASSERT_FMT(
-            err == CUBLAS_STATUS_SUCCESS,
-            "cublasGemmStridedBatchedEx failed (%d)",
-            (int)err);
-    CUDA_TEST_ERROR();
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/MatrixMult.cuh b/faiss/gpu_cuda/utils/MatrixMult.cuh
deleted file mode 100644
index b15a49f5d1c76530c84066298b41eec04c81fa08..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/MatrixMult.cuh
+++ /dev/null
@@ -1,55 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cublas_v2.h>
-#include <faiss/gpu/utils/DeviceTensor.cuh>
-#include <faiss/gpu/utils/Float16.cuh>
-#include <faiss/gpu/utils/HostTensor.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-class GpuResources;
-
-/// C = alpha * A * B + beta * C
-/// Expects row major layout, not fortran/blas column major!
-template <typename AT, typename BT>
-void runMatrixMult(
-        Tensor<float, 2, true>& c,
-        bool transC,
-        Tensor<AT, 2, true>& a,
-        bool transA,
-        Tensor<BT, 2, true>& b,
-        bool transB,
-        float alpha,
-        float beta,
-        cublasHandle_t handle,
-        cudaStream_t stream);
-
-/// C_i = alpha * A_i * B_i + beta * C_i
-/// where `i` is the outermost dimension, via iterated gemm
-/// Expects row major layout, not fortran/blas column major!
-template <typename AT, typename BT>
-void runIteratedMatrixMult(
-        Tensor<float, 3, true>& c,
-        bool transC,
-        Tensor<AT, 3, true>& a,
-        bool transA,
-        Tensor<BT, 3, true>& b,
-        bool transB,
-        float alpha,
-        float beta,
-        cublasHandle_t handle,
-        cudaStream_t stream);
-
-} // namespace gpu
-} // namespace faiss
-
-#include <faiss/gpu/utils/MatrixMult-inl.cuh>
diff --git a/faiss/gpu_cuda/utils/MergeNetworkBlock.cuh b/faiss/gpu_cuda/utils/MergeNetworkBlock.cuh
deleted file mode 100644
index 50c9fb9fc84c894b1a81dd23020511c44e1ee48a..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/MergeNetworkBlock.cuh
+++ /dev/null
@@ -1,321 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/impl/FaissAssert.h>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/MergeNetworkUtils.cuh>
-#include <faiss/gpu/utils/PtxUtils.cuh>
-#include <faiss/gpu/utils/WarpShuffles.cuh>
-
-namespace faiss {
-namespace gpu {
-
-// Merge pairs of lists smaller than blockDim.x (NumThreads)
-template <
-        int NumThreads,
-        typename K,
-        typename V,
-        int N,
-        int L,
-        bool AllThreads,
-        bool Dir,
-        typename Comp,
-        bool FullMerge>
-inline __device__ void blockMergeSmall(K* listK, V* listV) {
-    static_assert(utils::isPowerOf2(L), "L must be a power-of-2");
-    static_assert(
-            utils::isPowerOf2(NumThreads), "NumThreads must be a power-of-2");
-    static_assert(L <= NumThreads, "merge list size must be <= NumThreads");
-
-    // Which pair of lists we are merging
-    int mergeId = threadIdx.x / L;
-
-    // Which thread we are within the merge
-    int tid = threadIdx.x % L;
-
-    // listK points to a region of size N * 2 * L
-    listK += 2 * L * mergeId;
-    listV += 2 * L * mergeId;
-
-    // It's not a bitonic merge, both lists are in the same direction,
-    // so handle the first swap assuming the second list is reversed
-    int pos = L - 1 - tid;
-    int stride = 2 * tid + 1;
-
-    if (AllThreads || (threadIdx.x < N * L)) {
-        K ka = listK[pos];
-        K kb = listK[pos + stride];
-
-        bool swap = Dir ? Comp::gt(ka, kb) : Comp::lt(ka, kb);
-        listK[pos] = swap ? kb : ka;
-        listK[pos + stride] = swap ? ka : kb;
-
-        V va = listV[pos];
-        V vb = listV[pos + stride];
-        listV[pos] = swap ? vb : va;
-        listV[pos + stride] = swap ? va : vb;
-
-        // FIXME: is this a CUDA 9 compiler bug?
-        // K& ka = listK[pos];
-        // K& kb = listK[pos + stride];
-
-        // bool s = Dir ? Comp::gt(ka, kb) : Comp::lt(ka, kb);
-        // swap(s, ka, kb);
-
-        // V& va = listV[pos];
-        // V& vb = listV[pos + stride];
-        // swap(s, va, vb);
-    }
-
-    __syncthreads();
-
-#pragma unroll
-    for (int stride = L / 2; stride > 0; stride /= 2) {
-        int pos = 2 * tid - (tid & (stride - 1));
-
-        if (AllThreads || (threadIdx.x < N * L)) {
-            K ka = listK[pos];
-            K kb = listK[pos + stride];
-
-            bool swap = Dir ? Comp::gt(ka, kb) : Comp::lt(ka, kb);
-            listK[pos] = swap ? kb : ka;
-            listK[pos + stride] = swap ? ka : kb;
-
-            V va = listV[pos];
-            V vb = listV[pos + stride];
-            listV[pos] = swap ? vb : va;
-            listV[pos + stride] = swap ? va : vb;
-
-            // FIXME: is this a CUDA 9 compiler bug?
-            // K& ka = listK[pos];
-            // K& kb = listK[pos + stride];
-
-            // bool s = Dir ? Comp::gt(ka, kb) : Comp::lt(ka, kb);
-            // swap(s, ka, kb);
-
-            // V& va = listV[pos];
-            // V& vb = listV[pos + stride];
-            // swap(s, va, vb);
-        }
-
-        __syncthreads();
-    }
-}
-
-// Merge pairs of sorted lists larger than blockDim.x (NumThreads)
-template <
-        int NumThreads,
-        typename K,
-        typename V,
-        int L,
-        bool Dir,
-        typename Comp,
-        bool FullMerge>
-inline __device__ void blockMergeLarge(K* listK, V* listV) {
-    static_assert(utils::isPowerOf2(L), "L must be a power-of-2");
-    static_assert(L >= kWarpSize, "merge list size must be >= 32");
-    static_assert(
-            utils::isPowerOf2(NumThreads), "NumThreads must be a power-of-2");
-    static_assert(L >= NumThreads, "merge list size must be >= NumThreads");
-
-    // For L > NumThreads, each thread has to perform more work
-    // per each stride.
-    constexpr int kLoopPerThread = L / NumThreads;
-
-    // It's not a bitonic merge, both lists are in the same direction,
-    // so handle the first swap assuming the second list is reversed
-#pragma unroll
-    for (int loop = 0; loop < kLoopPerThread; ++loop) {
-        int tid = loop * NumThreads + threadIdx.x;
-        int pos = L - 1 - tid;
-        int stride = 2 * tid + 1;
-
-        K ka = listK[pos];
-        K kb = listK[pos + stride];
-
-        bool swap = Dir ? Comp::gt(ka, kb) : Comp::lt(ka, kb);
-        listK[pos] = swap ? kb : ka;
-        listK[pos + stride] = swap ? ka : kb;
-
-        V va = listV[pos];
-        V vb = listV[pos + stride];
-        listV[pos] = swap ? vb : va;
-        listV[pos + stride] = swap ? va : vb;
-
-        // FIXME: is this a CUDA 9 compiler bug?
-        // K& ka = listK[pos];
-        // K& kb = listK[pos + stride];
-
-        // bool s = Dir ? Comp::gt(ka, kb) : Comp::lt(ka, kb);
-        // swap(s, ka, kb);
-
-        // V& va = listV[pos];
-        // V& vb = listV[pos + stride];
-        // swap(s, va, vb);
-    }
-
-    __syncthreads();
-
-    constexpr int kSecondLoopPerThread =
-            FullMerge ? kLoopPerThread : kLoopPerThread / 2;
-
-#pragma unroll
-    for (int stride = L / 2; stride > 0; stride /= 2) {
-#pragma unroll
-        for (int loop = 0; loop < kSecondLoopPerThread; ++loop) {
-            int tid = loop * NumThreads + threadIdx.x;
-            int pos = 2 * tid - (tid & (stride - 1));
-
-            K ka = listK[pos];
-            K kb = listK[pos + stride];
-
-            bool swap = Dir ? Comp::gt(ka, kb) : Comp::lt(ka, kb);
-            listK[pos] = swap ? kb : ka;
-            listK[pos + stride] = swap ? ka : kb;
-
-            V va = listV[pos];
-            V vb = listV[pos + stride];
-            listV[pos] = swap ? vb : va;
-            listV[pos + stride] = swap ? va : vb;
-
-            // FIXME: is this a CUDA 9 compiler bug?
-            // K& ka = listK[pos];
-            // K& kb = listK[pos + stride];
-
-            // bool s = Dir ? Comp::gt(ka, kb) : Comp::lt(ka, kb);
-            // swap(s, ka, kb);
-
-            // V& va = listV[pos];
-            // V& vb = listV[pos + stride];
-            // swap(s, va, vb);
-        }
-
-        __syncthreads();
-    }
-}
-
-/// Class template to prevent static_assert from firing for
-/// mixing smaller/larger than block cases
-template <
-        int NumThreads,
-        typename K,
-        typename V,
-        int N,
-        int L,
-        bool Dir,
-        typename Comp,
-        bool SmallerThanBlock,
-        bool FullMerge>
-struct BlockMerge {};
-
-/// Merging lists smaller than a block
-template <
-        int NumThreads,
-        typename K,
-        typename V,
-        int N,
-        int L,
-        bool Dir,
-        typename Comp,
-        bool FullMerge>
-struct BlockMerge<NumThreads, K, V, N, L, Dir, Comp, true, FullMerge> {
-    static inline __device__ void merge(K* listK, V* listV) {
-        constexpr int kNumParallelMerges = NumThreads / L;
-        constexpr int kNumIterations = N / kNumParallelMerges;
-
-        static_assert(L <= NumThreads, "list must be <= NumThreads");
-        static_assert(
-                (N < kNumParallelMerges) ||
-                        (kNumIterations * kNumParallelMerges == N),
-                "improper selection of N and L");
-
-        if (N < kNumParallelMerges) {
-            // We only need L threads per each list to perform the merge
-            blockMergeSmall<
-                    NumThreads,
-                    K,
-                    V,
-                    N,
-                    L,
-                    false,
-                    Dir,
-                    Comp,
-                    FullMerge>(listK, listV);
-        } else {
-            // All threads participate
-#pragma unroll
-            for (int i = 0; i < kNumIterations; ++i) {
-                int start = i * kNumParallelMerges * 2 * L;
-
-                blockMergeSmall<
-                        NumThreads,
-                        K,
-                        V,
-                        N,
-                        L,
-                        true,
-                        Dir,
-                        Comp,
-                        FullMerge>(listK + start, listV + start);
-            }
-        }
-    }
-};
-
-/// Merging lists larger than a block
-template <
-        int NumThreads,
-        typename K,
-        typename V,
-        int N,
-        int L,
-        bool Dir,
-        typename Comp,
-        bool FullMerge>
-struct BlockMerge<NumThreads, K, V, N, L, Dir, Comp, false, FullMerge> {
-    static inline __device__ void merge(K* listK, V* listV) {
-        // Each pair of lists is merged sequentially
-#pragma unroll
-        for (int i = 0; i < N; ++i) {
-            int start = i * 2 * L;
-
-            blockMergeLarge<NumThreads, K, V, L, Dir, Comp, FullMerge>(
-                    listK + start, listV + start);
-        }
-    }
-};
-
-template <
-        int NumThreads,
-        typename K,
-        typename V,
-        int N,
-        int L,
-        bool Dir,
-        typename Comp,
-        bool FullMerge = true>
-inline __device__ void blockMerge(K* listK, V* listV) {
-    constexpr bool kSmallerThanBlock = (L <= NumThreads);
-
-    BlockMerge<
-            NumThreads,
-            K,
-            V,
-            N,
-            L,
-            Dir,
-            Comp,
-            kSmallerThanBlock,
-            FullMerge>::merge(listK, listV);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/MergeNetworkUtils.cuh b/faiss/gpu_cuda/utils/MergeNetworkUtils.cuh
deleted file mode 100644
index 56ebfbb68127b6c0ece04b814d63c36486c6bc80..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/MergeNetworkUtils.cuh
+++ /dev/null
@@ -1,26 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-namespace faiss {
-namespace gpu {
-
-template <typename T>
-inline __device__ void swap(bool swap, T& x, T& y) {
-    T tmp = x;
-    x = swap ? y : x;
-    y = swap ? tmp : y;
-}
-
-template <typename T>
-inline __device__ void assign(bool assign, T& x, T y) {
-    x = assign ? y : x;
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/MergeNetworkWarp.cuh b/faiss/gpu_cuda/utils/MergeNetworkWarp.cuh
deleted file mode 100644
index fcd1f648d8a662a3b09a15fe587a57d707d74e68..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/MergeNetworkWarp.cuh
+++ /dev/null
@@ -1,550 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/MergeNetworkUtils.cuh>
-#include <faiss/gpu/utils/PtxUtils.cuh>
-#include <faiss/gpu/utils/WarpShuffles.cuh>
-
-namespace faiss {
-namespace gpu {
-
-//
-// This file contains functions to:
-//
-// -perform bitonic merges on pairs of sorted lists, held in
-// registers. Each list contains N * kWarpSize (multiple of 32)
-// elements for some N.
-// The bitonic merge is implemented for arbitrary sizes;
-// sorted list A of size N1 * kWarpSize registers
-// sorted list B of size N2 * kWarpSize registers =>
-// sorted list C if size (N1 + N2) * kWarpSize registers. N1 and N2
-// are >= 1 and don't have to be powers of 2.
-//
-// -perform bitonic sorts on a set of N * kWarpSize key/value pairs
-// held in registers, by using the above bitonic merge as a
-// primitive.
-// N can be an arbitrary N >= 1; i.e., the bitonic sort here supports
-// odd sizes and doesn't require the input to be a power of 2.
-//
-// The sort or merge network is completely statically instantiated via
-// template specialization / expansion and constexpr, and it uses warp
-// shuffles to exchange values between warp lanes.
-//
-// A note about comparsions:
-//
-// For a sorting network of keys only, we only need one
-// comparison (a < b). However, what we really need to know is
-// if one lane chooses to exchange a value, then the
-// corresponding lane should also do the exchange.
-// Thus, if one just uses the negation !(x < y) in the higher
-// lane, this will also include the case where (x == y). Thus, one
-// lane in fact performs an exchange and the other doesn't, but
-// because the only value being exchanged is equivalent, nothing has
-// changed.
-// So, you can get away with just one comparison and its negation.
-//
-// If we're sorting keys and values, where equivalent keys can
-// exist, then this is a problem, since we want to treat (x, v1)
-// as not equivalent to (x, v2).
-//
-// To remedy this, you can either compare with a lexicographic
-// ordering (a.k < b.k || (a.k == b.k && a.v < b.v)), which since
-// we're predicating all of the choices results in 3 comparisons
-// being executed, or we can invert the selection so that there is no
-// middle choice of equality; the other lane will likewise
-// check that (b.k > a.k) (the higher lane has the values
-// swapped). Then, the first lane swaps if and only if the
-// second lane swaps; if both lanes have equivalent keys, no
-// swap will be performed. This results in only two comparisons
-// being executed.
-//
-// If you don't consider values as well, then this does not produce a
-// consistent ordering among (k, v) pairs with equivalent keys but
-// different values; for us, we don't really care about ordering or
-// stability here.
-//
-// I have tried both re-arranging the order in the higher lane to get
-// away with one comparison or adding the value to the check; both
-// result in greater register consumption or lower speed than just
-// perfoming both < and > comparisons with the variables, so I just
-// stick with this.
-
-// This function merges kWarpSize / 2L lists in parallel using warp
-// shuffles.
-// It works on at most size-16 lists, as we need 32 threads for this
-// shuffle merge.
-//
-// If IsBitonic is false, the first stage is reversed, so we don't
-// need to sort directionally. It's still technically a bitonic sort.
-template <
-        typename K,
-        typename V,
-        int L,
-        bool Dir,
-        typename Comp,
-        bool IsBitonic>
-inline __device__ void warpBitonicMergeLE16(K& k, V& v) {
-    static_assert(utils::isPowerOf2(L), "L must be a power-of-2");
-    static_assert(L <= kWarpSize / 2, "merge list size must be <= 16");
-
-    int laneId = getLaneId();
-
-    if (!IsBitonic) {
-        // Reverse the first comparison stage.
-        // For example, merging a list of size 8 has the exchanges:
-        // 0 <-> 15, 1 <-> 14, ...
-        K otherK = shfl_xor(k, 2 * L - 1);
-        V otherV = shfl_xor(v, 2 * L - 1);
-
-        // Whether we are the lesser thread in the exchange
-        bool small = !(laneId & L);
-
-        if (Dir) {
-            // See the comment above how performing both of these
-            // comparisons in the warp seems to win out over the
-            // alternatives in practice
-            bool s = small ? Comp::gt(k, otherK) : Comp::lt(k, otherK);
-            assign(s, k, otherK);
-            assign(s, v, otherV);
-
-        } else {
-            bool s = small ? Comp::lt(k, otherK) : Comp::gt(k, otherK);
-            assign(s, k, otherK);
-            assign(s, v, otherV);
-        }
-    }
-
-#pragma unroll
-    for (int stride = IsBitonic ? L : L / 2; stride > 0; stride /= 2) {
-        K otherK = shfl_xor(k, stride);
-        V otherV = shfl_xor(v, stride);
-
-        // Whether we are the lesser thread in the exchange
-        bool small = !(laneId & stride);
-
-        if (Dir) {
-            bool s = small ? Comp::gt(k, otherK) : Comp::lt(k, otherK);
-            assign(s, k, otherK);
-            assign(s, v, otherV);
-
-        } else {
-            bool s = small ? Comp::lt(k, otherK) : Comp::gt(k, otherK);
-            assign(s, k, otherK);
-            assign(s, v, otherV);
-        }
-    }
-}
-
-// Template for performing a bitonic merge of an arbitrary set of
-// registers
-template <
-        typename K,
-        typename V,
-        int N,
-        bool Dir,
-        typename Comp,
-        bool Low,
-        bool Pow2>
-struct BitonicMergeStep {};
-
-//
-// Power-of-2 merge specialization
-//
-
-// All merges eventually call this
-template <typename K, typename V, bool Dir, typename Comp, bool Low>
-struct BitonicMergeStep<K, V, 1, Dir, Comp, Low, true> {
-    static inline __device__ void merge(K k[1], V v[1]) {
-        // Use warp shuffles
-        warpBitonicMergeLE16<K, V, 16, Dir, Comp, true>(k[0], v[0]);
-    }
-};
-
-template <typename K, typename V, int N, bool Dir, typename Comp, bool Low>
-struct BitonicMergeStep<K, V, N, Dir, Comp, Low, true> {
-    static inline __device__ void merge(K k[N], V v[N]) {
-        static_assert(utils::isPowerOf2(N), "must be power of 2");
-        static_assert(N > 1, "must be N > 1");
-
-#pragma unroll
-        for (int i = 0; i < N / 2; ++i) {
-            K& ka = k[i];
-            V& va = v[i];
-
-            K& kb = k[i + N / 2];
-            V& vb = v[i + N / 2];
-
-            bool s = Dir ? Comp::gt(ka, kb) : Comp::lt(ka, kb);
-            swap(s, ka, kb);
-            swap(s, va, vb);
-        }
-
-        {
-            K newK[N / 2];
-            V newV[N / 2];
-
-#pragma unroll
-            for (int i = 0; i < N / 2; ++i) {
-                newK[i] = k[i];
-                newV[i] = v[i];
-            }
-
-            BitonicMergeStep<K, V, N / 2, Dir, Comp, true, true>::merge(
-                    newK, newV);
-
-#pragma unroll
-            for (int i = 0; i < N / 2; ++i) {
-                k[i] = newK[i];
-                v[i] = newV[i];
-            }
-        }
-
-        {
-            K newK[N / 2];
-            V newV[N / 2];
-
-#pragma unroll
-            for (int i = 0; i < N / 2; ++i) {
-                newK[i] = k[i + N / 2];
-                newV[i] = v[i + N / 2];
-            }
-
-            BitonicMergeStep<K, V, N / 2, Dir, Comp, false, true>::merge(
-                    newK, newV);
-
-#pragma unroll
-            for (int i = 0; i < N / 2; ++i) {
-                k[i + N / 2] = newK[i];
-                v[i + N / 2] = newV[i];
-            }
-        }
-    }
-};
-
-//
-// Non-power-of-2 merge specialization
-//
-
-// Low recursion
-template <typename K, typename V, int N, bool Dir, typename Comp>
-struct BitonicMergeStep<K, V, N, Dir, Comp, true, false> {
-    static inline __device__ void merge(K k[N], V v[N]) {
-        static_assert(!utils::isPowerOf2(N), "must be non-power-of-2");
-        static_assert(N >= 3, "must be N >= 3");
-
-        constexpr int kNextHighestPowerOf2 = utils::nextHighestPowerOf2(N);
-
-#pragma unroll
-        for (int i = 0; i < N - kNextHighestPowerOf2 / 2; ++i) {
-            K& ka = k[i];
-            V& va = v[i];
-
-            K& kb = k[i + kNextHighestPowerOf2 / 2];
-            V& vb = v[i + kNextHighestPowerOf2 / 2];
-
-            bool s = Dir ? Comp::gt(ka, kb) : Comp::lt(ka, kb);
-            swap(s, ka, kb);
-            swap(s, va, vb);
-        }
-
-        constexpr int kLowSize = N - kNextHighestPowerOf2 / 2;
-        constexpr int kHighSize = kNextHighestPowerOf2 / 2;
-        {
-            K newK[kLowSize];
-            V newV[kLowSize];
-
-#pragma unroll
-            for (int i = 0; i < kLowSize; ++i) {
-                newK[i] = k[i];
-                newV[i] = v[i];
-            }
-
-            constexpr bool kLowIsPowerOf2 =
-                    utils::isPowerOf2(N - kNextHighestPowerOf2 / 2);
-            // FIXME: compiler doesn't like this expression? compiler bug?
-            //      constexpr bool kLowIsPowerOf2 = utils::isPowerOf2(kLowSize);
-            BitonicMergeStep<
-                    K,
-                    V,
-                    kLowSize,
-                    Dir,
-                    Comp,
-                    true, // low
-                    kLowIsPowerOf2>::merge(newK, newV);
-
-#pragma unroll
-            for (int i = 0; i < kLowSize; ++i) {
-                k[i] = newK[i];
-                v[i] = newV[i];
-            }
-        }
-
-        {
-            K newK[kHighSize];
-            V newV[kHighSize];
-
-#pragma unroll
-            for (int i = 0; i < kHighSize; ++i) {
-                newK[i] = k[i + kLowSize];
-                newV[i] = v[i + kLowSize];
-            }
-
-            constexpr bool kHighIsPowerOf2 =
-                    utils::isPowerOf2(kNextHighestPowerOf2 / 2);
-            // FIXME: compiler doesn't like this expression? compiler bug?
-            //      constexpr bool kHighIsPowerOf2 =
-            //      utils::isPowerOf2(kHighSize);
-            BitonicMergeStep<
-                    K,
-                    V,
-                    kHighSize,
-                    Dir,
-                    Comp,
-                    false, // high
-                    kHighIsPowerOf2>::merge(newK, newV);
-
-#pragma unroll
-            for (int i = 0; i < kHighSize; ++i) {
-                k[i + kLowSize] = newK[i];
-                v[i + kLowSize] = newV[i];
-            }
-        }
-    }
-};
-
-// High recursion
-template <typename K, typename V, int N, bool Dir, typename Comp>
-struct BitonicMergeStep<K, V, N, Dir, Comp, false, false> {
-    static inline __device__ void merge(K k[N], V v[N]) {
-        static_assert(!utils::isPowerOf2(N), "must be non-power-of-2");
-        static_assert(N >= 3, "must be N >= 3");
-
-        constexpr int kNextHighestPowerOf2 = utils::nextHighestPowerOf2(N);
-
-#pragma unroll
-        for (int i = 0; i < N - kNextHighestPowerOf2 / 2; ++i) {
-            K& ka = k[i];
-            V& va = v[i];
-
-            K& kb = k[i + kNextHighestPowerOf2 / 2];
-            V& vb = v[i + kNextHighestPowerOf2 / 2];
-
-            bool s = Dir ? Comp::gt(ka, kb) : Comp::lt(ka, kb);
-            swap(s, ka, kb);
-            swap(s, va, vb);
-        }
-
-        constexpr int kLowSize = kNextHighestPowerOf2 / 2;
-        constexpr int kHighSize = N - kNextHighestPowerOf2 / 2;
-        {
-            K newK[kLowSize];
-            V newV[kLowSize];
-
-#pragma unroll
-            for (int i = 0; i < kLowSize; ++i) {
-                newK[i] = k[i];
-                newV[i] = v[i];
-            }
-
-            constexpr bool kLowIsPowerOf2 =
-                    utils::isPowerOf2(kNextHighestPowerOf2 / 2);
-            // FIXME: compiler doesn't like this expression? compiler bug?
-            //      constexpr bool kLowIsPowerOf2 = utils::isPowerOf2(kLowSize);
-            BitonicMergeStep<
-                    K,
-                    V,
-                    kLowSize,
-                    Dir,
-                    Comp,
-                    true, // low
-                    kLowIsPowerOf2>::merge(newK, newV);
-
-#pragma unroll
-            for (int i = 0; i < kLowSize; ++i) {
-                k[i] = newK[i];
-                v[i] = newV[i];
-            }
-        }
-
-        {
-            K newK[kHighSize];
-            V newV[kHighSize];
-
-#pragma unroll
-            for (int i = 0; i < kHighSize; ++i) {
-                newK[i] = k[i + kLowSize];
-                newV[i] = v[i + kLowSize];
-            }
-
-            constexpr bool kHighIsPowerOf2 =
-                    utils::isPowerOf2(N - kNextHighestPowerOf2 / 2);
-            // FIXME: compiler doesn't like this expression? compiler bug?
-            //      constexpr bool kHighIsPowerOf2 =
-            //      utils::isPowerOf2(kHighSize);
-            BitonicMergeStep<
-                    K,
-                    V,
-                    kHighSize,
-                    Dir,
-                    Comp,
-                    false, // high
-                    kHighIsPowerOf2>::merge(newK, newV);
-
-#pragma unroll
-            for (int i = 0; i < kHighSize; ++i) {
-                k[i + kLowSize] = newK[i];
-                v[i + kLowSize] = newV[i];
-            }
-        }
-    }
-};
-
-/// Merges two sets of registers across the warp of any size;
-/// i.e., merges a sorted k/v list of size kWarpSize * N1 with a
-/// sorted k/v list of size kWarpSize * N2, where N1 and N2 are any
-/// value >= 1
-template <
-        typename K,
-        typename V,
-        int N1,
-        int N2,
-        bool Dir,
-        typename Comp,
-        bool FullMerge = true>
-inline __device__ void warpMergeAnyRegisters(
-        K k1[N1],
-        V v1[N1],
-        K k2[N2],
-        V v2[N2]) {
-    constexpr int kSmallestN = N1 < N2 ? N1 : N2;
-
-#pragma unroll
-    for (int i = 0; i < kSmallestN; ++i) {
-        K& ka = k1[N1 - 1 - i];
-        V& va = v1[N1 - 1 - i];
-
-        K& kb = k2[i];
-        V& vb = v2[i];
-
-        K otherKa;
-        V otherVa;
-
-        if (FullMerge) {
-            // We need the other values
-            otherKa = shfl_xor(ka, kWarpSize - 1);
-            otherVa = shfl_xor(va, kWarpSize - 1);
-        }
-
-        K otherKb = shfl_xor(kb, kWarpSize - 1);
-        V otherVb = shfl_xor(vb, kWarpSize - 1);
-
-        // ka is always first in the list, so we needn't use our lane
-        // in this comparison
-        bool swapa = Dir ? Comp::gt(ka, otherKb) : Comp::lt(ka, otherKb);
-        assign(swapa, ka, otherKb);
-        assign(swapa, va, otherVb);
-
-        // kb is always second in the list, so we needn't use our lane
-        // in this comparison
-        if (FullMerge) {
-            bool swapb = Dir ? Comp::lt(kb, otherKa) : Comp::gt(kb, otherKa);
-            assign(swapb, kb, otherKa);
-            assign(swapb, vb, otherVa);
-
-        } else {
-            // We don't care about updating elements in the second list
-        }
-    }
-
-    BitonicMergeStep<K, V, N1, Dir, Comp, true, utils::isPowerOf2(N1)>::merge(
-            k1, v1);
-    if (FullMerge) {
-        // Only if we care about N2 do we need to bother merging it fully
-        BitonicMergeStep<K, V, N2, Dir, Comp, false, utils::isPowerOf2(N2)>::
-                merge(k2, v2);
-    }
-}
-
-// Recursive template that uses the above bitonic merge to perform a
-// bitonic sort
-template <typename K, typename V, int N, bool Dir, typename Comp>
-struct BitonicSortStep {
-    static inline __device__ void sort(K k[N], V v[N]) {
-        static_assert(N > 1, "did not hit specialized case");
-
-        // Sort recursively
-        constexpr int kSizeA = N / 2;
-        constexpr int kSizeB = N - kSizeA;
-
-        K aK[kSizeA];
-        V aV[kSizeA];
-
-#pragma unroll
-        for (int i = 0; i < kSizeA; ++i) {
-            aK[i] = k[i];
-            aV[i] = v[i];
-        }
-
-        BitonicSortStep<K, V, kSizeA, Dir, Comp>::sort(aK, aV);
-
-        K bK[kSizeB];
-        V bV[kSizeB];
-
-#pragma unroll
-        for (int i = 0; i < kSizeB; ++i) {
-            bK[i] = k[i + kSizeA];
-            bV[i] = v[i + kSizeA];
-        }
-
-        BitonicSortStep<K, V, kSizeB, Dir, Comp>::sort(bK, bV);
-
-        // Merge halves
-        warpMergeAnyRegisters<K, V, kSizeA, kSizeB, Dir, Comp>(aK, aV, bK, bV);
-
-#pragma unroll
-        for (int i = 0; i < kSizeA; ++i) {
-            k[i] = aK[i];
-            v[i] = aV[i];
-        }
-
-#pragma unroll
-        for (int i = 0; i < kSizeB; ++i) {
-            k[i + kSizeA] = bK[i];
-            v[i + kSizeA] = bV[i];
-        }
-    }
-};
-
-// Single warp (N == 1) sorting specialization
-template <typename K, typename V, bool Dir, typename Comp>
-struct BitonicSortStep<K, V, 1, Dir, Comp> {
-    static inline __device__ void sort(K k[1], V v[1]) {
-        // Update this code if this changes
-        // should go from 1 -> kWarpSize in multiples of 2
-        static_assert(kWarpSize == 32, "unexpected warp size");
-
-        warpBitonicMergeLE16<K, V, 1, Dir, Comp, false>(k[0], v[0]);
-        warpBitonicMergeLE16<K, V, 2, Dir, Comp, false>(k[0], v[0]);
-        warpBitonicMergeLE16<K, V, 4, Dir, Comp, false>(k[0], v[0]);
-        warpBitonicMergeLE16<K, V, 8, Dir, Comp, false>(k[0], v[0]);
-        warpBitonicMergeLE16<K, V, 16, Dir, Comp, false>(k[0], v[0]);
-    }
-};
-
-/// Sort a list of kWarpSize * N elements in registers, where N is an
-/// arbitrary >= 1
-template <typename K, typename V, int N, bool Dir, typename Comp>
-inline __device__ void warpSortAnyRegisters(K k[N], V v[N]) {
-    BitonicSortStep<K, V, N, Dir, Comp>::sort(k, v);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/NoTypeTensor.cuh b/faiss/gpu_cuda/utils/NoTypeTensor.cuh
deleted file mode 100644
index c48845b74db6922ad8dcc3951a9036f93aca76d3..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/NoTypeTensor.cuh
+++ /dev/null
@@ -1,120 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/impl/FaissAssert.h>
-#include <faiss/gpu/utils/Tensor.cuh>
-#include <initializer_list>
-
-namespace faiss {
-namespace gpu {
-
-template <int Dim, bool InnerContig = false, typename IndexT = int>
-class NoTypeTensor {
-   public:
-    NoTypeTensor() : mem_(nullptr), typeSize_(0) {}
-
-    template <typename T>
-    NoTypeTensor(Tensor<T, Dim, InnerContig, IndexT>& t)
-            : mem_(t.data()), typeSize_(sizeof(T)) {
-        for (int i = 0; i < Dim; ++i) {
-            size_[i] = t.getSize(i);
-            stride_[i] = t.getStride(i);
-        }
-    }
-
-    NoTypeTensor(void* mem, int typeSize, std::initializer_list<IndexT> sizes)
-            : mem_(mem), typeSize_(typeSize) {
-        int i = 0;
-        for (auto s : sizes) {
-            size_[i++] = s;
-        }
-
-        stride_[Dim - 1] = (IndexT)1;
-        for (int j = Dim - 2; j >= 0; --j) {
-            stride_[j] = stride_[j + 1] * size_[j + 1];
-        }
-    }
-
-    NoTypeTensor(void* mem, int typeSize, int sizes[Dim])
-            : mem_(mem), typeSize_(typeSize) {
-        for (int i = 0; i < Dim; ++i) {
-            size_[i] = sizes[i];
-        }
-
-        stride_[Dim - 1] = (IndexT)1;
-        for (int i = Dim - 2; i >= 0; --i) {
-            stride_[i] = stride_[i + 1] * sizes[i + 1];
-        }
-    }
-
-    NoTypeTensor(
-            void* mem,
-            int typeSize,
-            IndexT sizes[Dim],
-            IndexT strides[Dim])
-            : mem_(mem), typeSize_(typeSize) {
-        for (int i = 0; i < Dim; ++i) {
-            size_[i] = sizes[i];
-            stride_[i] = strides[i];
-        }
-    }
-
-    int getTypeSize() const {
-        return typeSize_;
-    }
-
-    IndexT getSize(int dim) const {
-        FAISS_ASSERT(dim < Dim);
-        return size_[dim];
-    }
-
-    IndexT getStride(int dim) const {
-        FAISS_ASSERT(dim < Dim);
-        return stride_[dim];
-    }
-
-    template <typename T>
-    Tensor<T, Dim, InnerContig, IndexT> toTensor() {
-        FAISS_ASSERT(sizeof(T) == typeSize_);
-
-        return Tensor<T, Dim, InnerContig, IndexT>((T*)mem_, size_, stride_);
-    }
-
-    NoTypeTensor<Dim, InnerContig, IndexT> narrowOutermost(
-            IndexT start,
-            IndexT size) {
-        char* newPtr = (char*)mem_;
-
-        if (start > 0) {
-            newPtr += typeSize_ * start * stride_[0];
-        }
-
-        IndexT newSize[Dim];
-        for (int i = 0; i < Dim; ++i) {
-            if (i == 0) {
-                assert(start + size <= size_[0]);
-                newSize[i] = size;
-            } else {
-                newSize[i] = size_[i];
-            }
-        }
-
-        return NoTypeTensor<Dim, InnerContig, IndexT>(
-                newPtr, typeSize_, newSize, stride_);
-    }
-
-   private:
-    void* mem_;
-    int typeSize_;
-    IndexT size_[Dim];
-    IndexT stride_[Dim];
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/Pair.cuh b/faiss/gpu_cuda/utils/Pair.cuh
deleted file mode 100644
index d7c377c2ed9f87507103d6cad4338ad31dd051dc..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/Pair.cuh
+++ /dev/null
@@ -1,66 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda.h>
-#include <faiss/gpu/utils/MathOperators.cuh>
-#include <faiss/gpu/utils/WarpShuffles.cuh>
-
-namespace faiss {
-namespace gpu {
-
-/// A simple pair type for CUDA device usage
-template <typename K, typename V>
-struct Pair {
-    constexpr __device__ inline Pair() {}
-
-    constexpr __device__ inline Pair(K key, V value) : k(key), v(value) {}
-
-    __device__ inline bool operator==(const Pair<K, V>& rhs) const {
-        return Math<K>::eq(k, rhs.k) && Math<V>::eq(v, rhs.v);
-    }
-
-    __device__ inline bool operator!=(const Pair<K, V>& rhs) const {
-        return !operator==(rhs);
-    }
-
-    __device__ inline bool operator<(const Pair<K, V>& rhs) const {
-        return Math<K>::lt(k, rhs.k) ||
-                (Math<K>::eq(k, rhs.k) && Math<V>::lt(v, rhs.v));
-    }
-
-    __device__ inline bool operator>(const Pair<K, V>& rhs) const {
-        return Math<K>::gt(k, rhs.k) ||
-                (Math<K>::eq(k, rhs.k) && Math<V>::gt(v, rhs.v));
-    }
-
-    K k;
-    V v;
-};
-
-template <typename T, typename U>
-inline __device__ Pair<T, U> shfl_up(
-        const Pair<T, U>& pair,
-        unsigned int delta,
-        int width = kWarpSize) {
-    return Pair<T, U>(
-            shfl_up(pair.k, delta, width), shfl_up(pair.v, delta, width));
-}
-
-template <typename T, typename U>
-inline __device__ Pair<T, U> shfl_xor(
-        const Pair<T, U>& pair,
-        int laneMask,
-        int width = kWarpSize) {
-    return Pair<T, U>(
-            shfl_xor(pair.k, laneMask, width),
-            shfl_xor(pair.v, laneMask, width));
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/PtxUtils.cuh b/faiss/gpu_cuda/utils/PtxUtils.cuh
deleted file mode 100644
index 35e23dd6323818afd1dbccb53f0a2edd87e1c978..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/PtxUtils.cuh
+++ /dev/null
@@ -1,92 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda.h>
-
-namespace faiss {
-namespace gpu {
-
-// defines to simplify the SASS assembly structure file/line in the profiler
-#define GET_BITFIELD_U32(OUT, VAL, POS, LEN) \
-    asm("bfe.u32 %0, %1, %2, %3;" : "=r"(OUT) : "r"(VAL), "r"(POS), "r"(LEN));
-
-#define GET_BITFIELD_U64(OUT, VAL, POS, LEN) \
-    asm("bfe.u64 %0, %1, %2, %3;" : "=l"(OUT) : "l"(VAL), "r"(POS), "r"(LEN));
-
-__device__ __forceinline__ unsigned int getBitfield(
-        unsigned int val,
-        int pos,
-        int len) {
-    unsigned int ret;
-    asm("bfe.u32 %0, %1, %2, %3;" : "=r"(ret) : "r"(val), "r"(pos), "r"(len));
-    return ret;
-}
-
-__device__ __forceinline__ uint64_t
-getBitfield(uint64_t val, int pos, int len) {
-    uint64_t ret;
-    asm("bfe.u64 %0, %1, %2, %3;" : "=l"(ret) : "l"(val), "r"(pos), "r"(len));
-    return ret;
-}
-
-__device__ __forceinline__ unsigned int setBitfield(
-        unsigned int val,
-        unsigned int toInsert,
-        int pos,
-        int len) {
-    unsigned int ret;
-    asm("bfi.b32 %0, %1, %2, %3, %4;"
-        : "=r"(ret)
-        : "r"(toInsert), "r"(val), "r"(pos), "r"(len));
-    return ret;
-}
-
-__device__ __forceinline__ int getLaneId() {
-    int laneId;
-    asm("mov.u32 %0, %%laneid;" : "=r"(laneId));
-    return laneId;
-}
-
-__device__ __forceinline__ unsigned getLaneMaskLt() {
-    unsigned mask;
-    asm("mov.u32 %0, %%lanemask_lt;" : "=r"(mask));
-    return mask;
-}
-
-__device__ __forceinline__ unsigned getLaneMaskLe() {
-    unsigned mask;
-    asm("mov.u32 %0, %%lanemask_le;" : "=r"(mask));
-    return mask;
-}
-
-__device__ __forceinline__ unsigned getLaneMaskGt() {
-    unsigned mask;
-    asm("mov.u32 %0, %%lanemask_gt;" : "=r"(mask));
-    return mask;
-}
-
-__device__ __forceinline__ unsigned getLaneMaskGe() {
-    unsigned mask;
-    asm("mov.u32 %0, %%lanemask_ge;" : "=r"(mask));
-    return mask;
-}
-
-__device__ __forceinline__ void namedBarrierWait(int name, int numThreads) {
-    asm volatile("bar.sync %0, %1;" : : "r"(name), "r"(numThreads) : "memory");
-}
-
-__device__ __forceinline__ void namedBarrierArrived(int name, int numThreads) {
-    asm volatile("bar.arrive %0, %1;"
-                 :
-                 : "r"(name), "r"(numThreads)
-                 : "memory");
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/ReductionOperators.cuh b/faiss/gpu_cuda/utils/ReductionOperators.cuh
deleted file mode 100644
index ed87ac3ad02f6ba7ed541cce53292c5735281ef2..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/ReductionOperators.cuh
+++ /dev/null
@@ -1,71 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda.h>
-#include <faiss/gpu/utils/Limits.cuh>
-#include <faiss/gpu/utils/MathOperators.cuh>
-#include <faiss/gpu/utils/Pair.cuh>
-
-namespace faiss {
-namespace gpu {
-
-template <typename T>
-struct Sum {
-    __device__ inline T operator()(T a, T b) const {
-        return Math<T>::add(a, b);
-    }
-
-    inline __device__ T identity() const {
-        return Math<T>::zero();
-    }
-};
-
-template <typename T>
-struct Min {
-    __device__ inline T operator()(T a, T b) const {
-        return Math<T>::lt(a, b) ? a : b;
-    }
-
-    inline __device__ T identity() const {
-        return Limits<T>::getMax();
-    }
-};
-
-template <typename T>
-struct Max {
-    __device__ inline T operator()(T a, T b) const {
-        return Math<T>::gt(a, b) ? a : b;
-    }
-
-    inline __device__ T identity() const {
-        return Limits<T>::getMin();
-    }
-};
-
-/// Used for producing segmented prefix scans; the value of the Pair
-/// denotes the start of a new segment for the scan
-template <typename T, typename ReduceOp>
-struct SegmentedReduce {
-    inline __device__ SegmentedReduce(const ReduceOp& o) : op(o) {}
-
-    __device__ inline Pair<T, bool> operator()(
-            const Pair<T, bool>& a,
-            const Pair<T, bool>& b) const {
-        return Pair<T, bool>(b.v ? b.k : op(a.k, b.k), a.v || b.v);
-    }
-
-    inline __device__ Pair<T, bool> identity() const {
-        return Pair<T, bool>(op.identity(), false);
-    }
-
-    ReduceOp op;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/Reductions.cuh b/faiss/gpu_cuda/utils/Reductions.cuh
deleted file mode 100644
index 5dcda8f0a90740955a1cdbe57c949d8f0a5d3ac6..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/Reductions.cuh
+++ /dev/null
@@ -1,147 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/PtxUtils.cuh>
-#include <faiss/gpu/utils/ReductionOperators.cuh>
-#include <faiss/gpu/utils/WarpShuffles.cuh>
-
-namespace faiss {
-namespace gpu {
-
-template <typename T, typename Op, int ReduceWidth = kWarpSize>
-__device__ inline T warpReduceAll(T val, Op op) {
-#pragma unroll
-    for (int mask = ReduceWidth / 2; mask > 0; mask >>= 1) {
-        val = op(val, shfl_xor(val, mask));
-    }
-
-    return val;
-}
-
-/// Sums a register value across all warp threads
-template <typename T, int ReduceWidth = kWarpSize>
-__device__ inline T warpReduceAllSum(T val) {
-    return warpReduceAll<T, Sum<T>, ReduceWidth>(val, Sum<T>());
-}
-
-/// Performs a block-wide reduction
-template <typename T, typename Op, bool BroadcastAll, bool KillWARDependency>
-__device__ inline T blockReduceAll(T val, Op op, T* smem) {
-    int laneId = getLaneId();
-    int warpId = threadIdx.x / kWarpSize;
-
-    val = warpReduceAll<T, Op>(val, op);
-    if (laneId == 0) {
-        smem[warpId] = val;
-    }
-    __syncthreads();
-
-    if (warpId == 0) {
-        val = laneId < utils::divUp(blockDim.x, kWarpSize) ? smem[laneId]
-                                                           : op.identity();
-        val = warpReduceAll<T, Op>(val, op);
-
-        if (BroadcastAll) {
-            __threadfence_block();
-
-            if (laneId == 0) {
-                smem[0] = val;
-            }
-        }
-    }
-
-    if (BroadcastAll) {
-        __syncthreads();
-        val = smem[0];
-    }
-
-    if (KillWARDependency) {
-        __syncthreads();
-    }
-
-    return val;
-}
-
-/// Performs a block-wide reduction of multiple values simultaneously
-template <
-        int Num,
-        typename T,
-        typename Op,
-        bool BroadcastAll,
-        bool KillWARDependency>
-__device__ inline void blockReduceAll(T val[Num], Op op, T* smem) {
-    int laneId = getLaneId();
-    int warpId = threadIdx.x / kWarpSize;
-
-#pragma unroll
-    for (int i = 0; i < Num; ++i) {
-        val[i] = warpReduceAll<T, Op>(val[i], op);
-    }
-
-    if (laneId == 0) {
-#pragma unroll
-        for (int i = 0; i < Num; ++i) {
-            smem[warpId * Num + i] = val[i];
-        }
-    }
-
-    __syncthreads();
-
-    if (warpId == 0) {
-#pragma unroll
-        for (int i = 0; i < Num; ++i) {
-            val[i] = laneId < utils::divUp(blockDim.x, kWarpSize)
-                    ? smem[laneId * Num + i]
-                    : op.identity();
-            val[i] = warpReduceAll<T, Op>(val[i], op);
-        }
-
-        if (BroadcastAll) {
-            __threadfence_block();
-
-            if (laneId == 0) {
-#pragma unroll
-                for (int i = 0; i < Num; ++i) {
-                    smem[i] = val[i];
-                }
-            }
-        }
-    }
-
-    if (BroadcastAll) {
-        __syncthreads();
-#pragma unroll
-        for (int i = 0; i < Num; ++i) {
-            val[i] = smem[i];
-        }
-    }
-
-    if (KillWARDependency) {
-        __syncthreads();
-    }
-}
-
-/// Sums a register value across the entire block
-template <typename T, bool BroadcastAll, bool KillWARDependency>
-__device__ inline T blockReduceAllSum(T val, T* smem) {
-    return blockReduceAll<T, Sum<T>, BroadcastAll, KillWARDependency>(
-            val, Sum<T>(), smem);
-}
-
-template <int Num, typename T, bool BroadcastAll, bool KillWARDependency>
-__device__ inline void blockReduceAllSum(T vals[Num], T* smem) {
-    return blockReduceAll<Num, T, Sum<T>, BroadcastAll, KillWARDependency>(
-            vals, Sum<T>(), smem);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/Select.cuh b/faiss/gpu_cuda/utils/Select.cuh
deleted file mode 100644
index 4ad89239bb27a624719c051d1a1ee4d836cf0af6..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/Select.cuh
+++ /dev/null
@@ -1,647 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/Comparators.cuh>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/MergeNetworkBlock.cuh>
-#include <faiss/gpu/utils/MergeNetworkWarp.cuh>
-#include <faiss/gpu/utils/PtxUtils.cuh>
-#include <faiss/gpu/utils/ReductionOperators.cuh>
-#include <faiss/gpu/utils/Reductions.cuh>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-// Specialization for block-wide monotonic merges producing a merge sort
-// since what we really want is a constexpr loop expansion
-template <
-        int NumWarps,
-        int NumThreads,
-        typename K,
-        typename V,
-        int NumWarpQ,
-        bool Dir,
-        typename Comp>
-struct FinalBlockMerge {};
-
-template <
-        int NumThreads,
-        typename K,
-        typename V,
-        int NumWarpQ,
-        bool Dir,
-        typename Comp>
-struct FinalBlockMerge<1, NumThreads, K, V, NumWarpQ, Dir, Comp> {
-    static inline __device__ void merge(K* sharedK, V* sharedV) {
-        // no merge required; single warp
-    }
-};
-
-template <
-        int NumThreads,
-        typename K,
-        typename V,
-        int NumWarpQ,
-        bool Dir,
-        typename Comp>
-struct FinalBlockMerge<2, NumThreads, K, V, NumWarpQ, Dir, Comp> {
-    static inline __device__ void merge(K* sharedK, V* sharedV) {
-        // Final merge doesn't need to fully merge the second list
-        blockMerge<
-                NumThreads,
-                K,
-                V,
-                NumThreads / (kWarpSize * 2),
-                NumWarpQ,
-                !Dir,
-                Comp,
-                false>(sharedK, sharedV);
-    }
-};
-
-template <
-        int NumThreads,
-        typename K,
-        typename V,
-        int NumWarpQ,
-        bool Dir,
-        typename Comp>
-struct FinalBlockMerge<4, NumThreads, K, V, NumWarpQ, Dir, Comp> {
-    static inline __device__ void merge(K* sharedK, V* sharedV) {
-        blockMerge<
-                NumThreads,
-                K,
-                V,
-                NumThreads / (kWarpSize * 2),
-                NumWarpQ,
-                !Dir,
-                Comp>(sharedK, sharedV);
-        // Final merge doesn't need to fully merge the second list
-        blockMerge<
-                NumThreads,
-                K,
-                V,
-                NumThreads / (kWarpSize * 4),
-                NumWarpQ * 2,
-                !Dir,
-                Comp,
-                false>(sharedK, sharedV);
-    }
-};
-
-template <
-        int NumThreads,
-        typename K,
-        typename V,
-        int NumWarpQ,
-        bool Dir,
-        typename Comp>
-struct FinalBlockMerge<8, NumThreads, K, V, NumWarpQ, Dir, Comp> {
-    static inline __device__ void merge(K* sharedK, V* sharedV) {
-        blockMerge<
-                NumThreads,
-                K,
-                V,
-                NumThreads / (kWarpSize * 2),
-                NumWarpQ,
-                !Dir,
-                Comp>(sharedK, sharedV);
-        blockMerge<
-                NumThreads,
-                K,
-                V,
-                NumThreads / (kWarpSize * 4),
-                NumWarpQ * 2,
-                !Dir,
-                Comp>(sharedK, sharedV);
-        // Final merge doesn't need to fully merge the second list
-        blockMerge<
-                NumThreads,
-                K,
-                V,
-                NumThreads / (kWarpSize * 8),
-                NumWarpQ * 4,
-                !Dir,
-                Comp,
-                false>(sharedK, sharedV);
-    }
-};
-
-// `Dir` true, produce largest values.
-// `Dir` false, produce smallest values.
-template <
-        typename K,
-        typename V,
-        bool Dir,
-        typename Comp,
-        int NumWarpQ,
-        int NumThreadQ,
-        int ThreadsPerBlock>
-struct BlockSelect {
-    static constexpr int kNumWarps = ThreadsPerBlock / kWarpSize;
-    static constexpr int kTotalWarpSortSize = NumWarpQ;
-
-    __device__ inline BlockSelect(
-            K initKVal,
-            V initVVal,
-            K* smemK,
-            V* smemV,
-            int k)
-            : initK(initKVal),
-              initV(initVVal),
-              numVals(0),
-              warpKTop(initKVal),
-              sharedK(smemK),
-              sharedV(smemV),
-              kMinus1(k - 1) {
-        static_assert(
-                utils::isPowerOf2(ThreadsPerBlock),
-                "threads must be a power-of-2");
-        static_assert(
-                utils::isPowerOf2(NumWarpQ), "warp queue must be power-of-2");
-
-        // Fill the per-thread queue keys with the default value
-#pragma unroll
-        for (int i = 0; i < NumThreadQ; ++i) {
-            threadK[i] = initK;
-            threadV[i] = initV;
-        }
-
-        int laneId = getLaneId();
-        int warpId = threadIdx.x / kWarpSize;
-        warpK = sharedK + warpId * kTotalWarpSortSize;
-        warpV = sharedV + warpId * kTotalWarpSortSize;
-
-        // Fill warp queue (only the actual queue space is fine, not where
-        // we write the per-thread queues for merging)
-        for (int i = laneId; i < NumWarpQ; i += kWarpSize) {
-            warpK[i] = initK;
-            warpV[i] = initV;
-        }
-
-        warpFence();
-    }
-
-    __device__ inline void addThreadQ(K k, V v) {
-        if (Dir ? Comp::gt(k, warpKTop) : Comp::lt(k, warpKTop)) {
-            // Rotate right
-#pragma unroll
-            for (int i = NumThreadQ - 1; i > 0; --i) {
-                threadK[i] = threadK[i - 1];
-                threadV[i] = threadV[i - 1];
-            }
-
-            threadK[0] = k;
-            threadV[0] = v;
-            ++numVals;
-        }
-    }
-
-    __device__ inline void checkThreadQ() {
-        bool needSort = (numVals == NumThreadQ);
-
-#if CUDA_VERSION >= 9000
-        needSort = __any_sync(0xffffffff, needSort);
-#else
-        needSort = __any(needSort);
-#endif
-
-        if (!needSort) {
-            // no lanes have triggered a sort
-            return;
-        }
-
-        // This has a trailing warpFence
-        mergeWarpQ();
-
-        // Any top-k elements have been merged into the warp queue; we're
-        // free to reset the thread queues
-        numVals = 0;
-
-#pragma unroll
-        for (int i = 0; i < NumThreadQ; ++i) {
-            threadK[i] = initK;
-            threadV[i] = initV;
-        }
-
-        // We have to beat at least this element
-        warpKTop = warpK[kMinus1];
-
-        warpFence();
-    }
-
-    /// This function handles sorting and merging together the
-    /// per-thread queues with the warp-wide queue, creating a sorted
-    /// list across both
-    __device__ inline void mergeWarpQ() {
-        int laneId = getLaneId();
-
-        // Sort all of the per-thread queues
-        warpSortAnyRegisters<K, V, NumThreadQ, !Dir, Comp>(threadK, threadV);
-
-        constexpr int kNumWarpQRegisters = NumWarpQ / kWarpSize;
-        K warpKRegisters[kNumWarpQRegisters];
-        V warpVRegisters[kNumWarpQRegisters];
-
-#pragma unroll
-        for (int i = 0; i < kNumWarpQRegisters; ++i) {
-            warpKRegisters[i] = warpK[i * kWarpSize + laneId];
-            warpVRegisters[i] = warpV[i * kWarpSize + laneId];
-        }
-
-        warpFence();
-
-        // The warp queue is already sorted, and now that we've sorted the
-        // per-thread queue, merge both sorted lists together, producing
-        // one sorted list
-        warpMergeAnyRegisters<
-                K,
-                V,
-                kNumWarpQRegisters,
-                NumThreadQ,
-                !Dir,
-                Comp,
-                false>(warpKRegisters, warpVRegisters, threadK, threadV);
-
-        // Write back out the warp queue
-#pragma unroll
-        for (int i = 0; i < kNumWarpQRegisters; ++i) {
-            warpK[i * kWarpSize + laneId] = warpKRegisters[i];
-            warpV[i * kWarpSize + laneId] = warpVRegisters[i];
-        }
-
-        warpFence();
-    }
-
-    /// WARNING: all threads in a warp must participate in this.
-    /// Otherwise, you must call the constituent parts separately.
-    __device__ inline void add(K k, V v) {
-        addThreadQ(k, v);
-        checkThreadQ();
-    }
-
-    __device__ inline void reduce() {
-        // Have all warps dump and merge their queues; this will produce
-        // the final per-warp results
-        mergeWarpQ();
-
-        // block-wide dep; thus far, all warps have been completely
-        // independent
-        __syncthreads();
-
-        // All warp queues are contiguous in smem.
-        // Now, we have kNumWarps lists of NumWarpQ elements.
-        // This is a power of 2.
-        FinalBlockMerge<kNumWarps, ThreadsPerBlock, K, V, NumWarpQ, Dir, Comp>::
-                merge(sharedK, sharedV);
-
-        // The block-wide merge has a trailing syncthreads
-    }
-
-    // Default element key
-    const K initK;
-
-    // Default element value
-    const V initV;
-
-    // Number of valid elements in our thread queue
-    int numVals;
-
-    // The k-th highest (Dir) or lowest (!Dir) element
-    K warpKTop;
-
-    // Thread queue values
-    K threadK[NumThreadQ];
-    V threadV[NumThreadQ];
-
-    // Queues for all warps
-    K* sharedK;
-    V* sharedV;
-
-    // Our warp's queue (points into sharedK/sharedV)
-    // warpK[0] is highest (Dir) or lowest (!Dir)
-    K* warpK;
-    V* warpV;
-
-    // This is a cached k-1 value
-    int kMinus1;
-};
-
-/// Specialization for k == 1 (NumWarpQ == 1)
-template <
-        typename K,
-        typename V,
-        bool Dir,
-        typename Comp,
-        int NumThreadQ,
-        int ThreadsPerBlock>
-struct BlockSelect<K, V, Dir, Comp, 1, NumThreadQ, ThreadsPerBlock> {
-    static constexpr int kNumWarps = ThreadsPerBlock / kWarpSize;
-
-    __device__ inline BlockSelect(K initK, V initV, K* smemK, V* smemV, int k)
-            : threadK(initK), threadV(initV), sharedK(smemK), sharedV(smemV) {}
-
-    __device__ inline void addThreadQ(K k, V v) {
-        bool swap = Dir ? Comp::gt(k, threadK) : Comp::lt(k, threadK);
-        threadK = swap ? k : threadK;
-        threadV = swap ? v : threadV;
-    }
-
-    __device__ inline void checkThreadQ() {
-        // We don't need to do anything here, since the warp doesn't
-        // cooperate until the end
-    }
-
-    __device__ inline void add(K k, V v) {
-        addThreadQ(k, v);
-    }
-
-    __device__ inline void reduce() {
-        // Reduce within the warp
-        Pair<K, V> pair(threadK, threadV);
-
-        if (Dir) {
-            pair = warpReduceAll<Pair<K, V>, Max<Pair<K, V>>>(
-                    pair, Max<Pair<K, V>>());
-        } else {
-            pair = warpReduceAll<Pair<K, V>, Min<Pair<K, V>>>(
-                    pair, Min<Pair<K, V>>());
-        }
-
-        // Each warp writes out a single value
-        int laneId = getLaneId();
-        int warpId = threadIdx.x / kWarpSize;
-
-        if (laneId == 0) {
-            sharedK[warpId] = pair.k;
-            sharedV[warpId] = pair.v;
-        }
-
-        __syncthreads();
-
-        // We typically use this for small blocks (<= 128), just having the
-        // first thread in the block perform the reduction across warps is
-        // faster
-        if (threadIdx.x == 0) {
-            threadK = sharedK[0];
-            threadV = sharedV[0];
-
-#pragma unroll
-            for (int i = 1; i < kNumWarps; ++i) {
-                K k = sharedK[i];
-                V v = sharedV[i];
-
-                bool swap = Dir ? Comp::gt(k, threadK) : Comp::lt(k, threadK);
-                threadK = swap ? k : threadK;
-                threadV = swap ? v : threadV;
-            }
-
-            // Hopefully a thread's smem reads/writes are ordered wrt
-            // itself, so no barrier needed :)
-            sharedK[0] = threadK;
-            sharedV[0] = threadV;
-        }
-
-        // In case other threads wish to read this value
-        __syncthreads();
-    }
-
-    // threadK is lowest (Dir) or highest (!Dir)
-    K threadK;
-    V threadV;
-
-    // Where we reduce in smem
-    K* sharedK;
-    V* sharedV;
-};
-
-//
-// per-warp WarpSelect
-//
-
-// `Dir` true, produce largest values.
-// `Dir` false, produce smallest values.
-template <
-        typename K,
-        typename V,
-        bool Dir,
-        typename Comp,
-        int NumWarpQ,
-        int NumThreadQ,
-        int ThreadsPerBlock>
-struct WarpSelect {
-    static constexpr int kNumWarpQRegisters = NumWarpQ / kWarpSize;
-
-    __device__ inline WarpSelect(K initKVal, V initVVal, int k)
-            : initK(initKVal),
-              initV(initVVal),
-              numVals(0),
-              warpKTop(initKVal),
-              kLane((k - 1) % kWarpSize) {
-        static_assert(
-                utils::isPowerOf2(ThreadsPerBlock),
-                "threads must be a power-of-2");
-        static_assert(
-                utils::isPowerOf2(NumWarpQ), "warp queue must be power-of-2");
-
-        // Fill the per-thread queue keys with the default value
-#pragma unroll
-        for (int i = 0; i < NumThreadQ; ++i) {
-            threadK[i] = initK;
-            threadV[i] = initV;
-        }
-
-        // Fill the warp queue with the default value
-#pragma unroll
-        for (int i = 0; i < kNumWarpQRegisters; ++i) {
-            warpK[i] = initK;
-            warpV[i] = initV;
-        }
-    }
-
-    __device__ inline void addThreadQ(K k, V v) {
-        if (Dir ? Comp::gt(k, warpKTop) : Comp::lt(k, warpKTop)) {
-            // Rotate right
-#pragma unroll
-            for (int i = NumThreadQ - 1; i > 0; --i) {
-                threadK[i] = threadK[i - 1];
-                threadV[i] = threadV[i - 1];
-            }
-
-            threadK[0] = k;
-            threadV[0] = v;
-            ++numVals;
-        }
-    }
-
-    __device__ inline void checkThreadQ() {
-        bool needSort = (numVals == NumThreadQ);
-
-#if CUDA_VERSION >= 9000
-        needSort = __any_sync(0xffffffff, needSort);
-#else
-        needSort = __any(needSort);
-#endif
-
-        if (!needSort) {
-            // no lanes have triggered a sort
-            return;
-        }
-
-        mergeWarpQ();
-
-        // Any top-k elements have been merged into the warp queue; we're
-        // free to reset the thread queues
-        numVals = 0;
-
-#pragma unroll
-        for (int i = 0; i < NumThreadQ; ++i) {
-            threadK[i] = initK;
-            threadV[i] = initV;
-        }
-
-        // We have to beat at least this element
-        warpKTop = shfl(warpK[kNumWarpQRegisters - 1], kLane);
-    }
-
-    /// This function handles sorting and merging together the
-    /// per-thread queues with the warp-wide queue, creating a sorted
-    /// list across both
-    __device__ inline void mergeWarpQ() {
-        // Sort all of the per-thread queues
-        warpSortAnyRegisters<K, V, NumThreadQ, !Dir, Comp>(threadK, threadV);
-
-        // The warp queue is already sorted, and now that we've sorted the
-        // per-thread queue, merge both sorted lists together, producing
-        // one sorted list
-        warpMergeAnyRegisters<
-                K,
-                V,
-                kNumWarpQRegisters,
-                NumThreadQ,
-                !Dir,
-                Comp,
-                false>(warpK, warpV, threadK, threadV);
-    }
-
-    /// WARNING: all threads in a warp must participate in this.
-    /// Otherwise, you must call the constituent parts separately.
-    __device__ inline void add(K k, V v) {
-        addThreadQ(k, v);
-        checkThreadQ();
-    }
-
-    __device__ inline void reduce() {
-        // Have all warps dump and merge their queues; this will produce
-        // the final per-warp results
-        mergeWarpQ();
-    }
-
-    /// Dump final k selected values for this warp out
-    __device__ inline void writeOut(K* outK, V* outV, int k) {
-        int laneId = getLaneId();
-
-#pragma unroll
-        for (int i = 0; i < kNumWarpQRegisters; ++i) {
-            int idx = i * kWarpSize + laneId;
-
-            if (idx < k) {
-                outK[idx] = warpK[i];
-                outV[idx] = warpV[i];
-            }
-        }
-    }
-
-    // Default element key
-    const K initK;
-
-    // Default element value
-    const V initV;
-
-    // Number of valid elements in our thread queue
-    int numVals;
-
-    // The k-th highest (Dir) or lowest (!Dir) element
-    K warpKTop;
-
-    // Thread queue values
-    K threadK[NumThreadQ];
-    V threadV[NumThreadQ];
-
-    // warpK[0] is highest (Dir) or lowest (!Dir)
-    K warpK[kNumWarpQRegisters];
-    V warpV[kNumWarpQRegisters];
-
-    // This is what lane we should load an approximation (>=k) to the
-    // kth element from the last register in the warp queue (i.e.,
-    // warpK[kNumWarpQRegisters - 1]).
-    int kLane;
-};
-
-/// Specialization for k == 1 (NumWarpQ == 1)
-template <
-        typename K,
-        typename V,
-        bool Dir,
-        typename Comp,
-        int NumThreadQ,
-        int ThreadsPerBlock>
-struct WarpSelect<K, V, Dir, Comp, 1, NumThreadQ, ThreadsPerBlock> {
-    static constexpr int kNumWarps = ThreadsPerBlock / kWarpSize;
-
-    __device__ inline WarpSelect(K initK, V initV, int k)
-            : threadK(initK), threadV(initV) {}
-
-    __device__ inline void addThreadQ(K k, V v) {
-        bool swap = Dir ? Comp::gt(k, threadK) : Comp::lt(k, threadK);
-        threadK = swap ? k : threadK;
-        threadV = swap ? v : threadV;
-    }
-
-    __device__ inline void checkThreadQ() {
-        // We don't need to do anything here, since the warp doesn't
-        // cooperate until the end
-    }
-
-    __device__ inline void add(K k, V v) {
-        addThreadQ(k, v);
-    }
-
-    __device__ inline void reduce() {
-        // Reduce within the warp
-        Pair<K, V> pair(threadK, threadV);
-
-        if (Dir) {
-            pair = warpReduceAll<Pair<K, V>, Max<Pair<K, V>>>(
-                    pair, Max<Pair<K, V>>());
-        } else {
-            pair = warpReduceAll<Pair<K, V>, Min<Pair<K, V>>>(
-                    pair, Min<Pair<K, V>>());
-        }
-
-        threadK = pair.k;
-        threadV = pair.v;
-    }
-
-    /// Dump final k selected values for this warp out
-    __device__ inline void writeOut(K* outK, V* outV, int k) {
-        if (getLaneId() == 0) {
-            *outK = threadK;
-            *outV = threadV;
-        }
-    }
-
-    // threadK is lowest (Dir) or highest (!Dir)
-    K threadK;
-    V threadV;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/StackDeviceMemory.cpp b/faiss/gpu_cuda/utils/StackDeviceMemory.cpp
deleted file mode 100644
index 5f121733c0ced2fee57e9ee342c0f0f10d04d1c6..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/StackDeviceMemory.cpp
+++ /dev/null
@@ -1,208 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StackDeviceMemory.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/impl/FaissAssert.h>
-#include <algorithm>
-#include <sstream>
-
-namespace faiss {
-namespace gpu {
-
-namespace {
-
-size_t adjustStackSize(size_t sz) {
-    if (sz == 0) {
-        return 0;
-    } else {
-        // ensure that we have at least 16 bytes, as all allocations are bumped
-        // up to 16
-        return utils::roundUp(sz, (size_t)16);
-    }
-}
-
-} // namespace
-
-StackDeviceMemory::Stack::Stack(GpuResources* res, int d, size_t sz)
-        : res_(res),
-          device_(d),
-          alloc_(nullptr),
-          allocSize_(adjustStackSize(sz)),
-          start_(nullptr),
-          end_(nullptr),
-          head_(nullptr),
-          highWaterMemoryUsed_(0) {
-    if (allocSize_ == 0) {
-        return;
-    }
-
-    DeviceScope s(device_);
-    auto req = AllocRequest(
-            AllocType::TemporaryMemoryBuffer,
-            device_,
-            MemorySpace::Device,
-            res_->getDefaultStream(device_),
-            allocSize_);
-
-    alloc_ = (char*)res_->allocMemory(req);
-    FAISS_ASSERT_FMT(
-            alloc_,
-            "could not reserve temporary memory region of size %zu",
-            allocSize_);
-
-    // In order to disambiguate between our entire region of temporary memory
-    // versus the first allocation in the temporary memory region, ensure that
-    // the first address returned is +16 bytes from the beginning
-    start_ = alloc_ + 16;
-    head_ = start_;
-    end_ = alloc_ + allocSize_;
-}
-
-StackDeviceMemory::Stack::~Stack() {
-    DeviceScope s(device_);
-
-    // FIXME: make sure there are no outstanding memory allocations?
-    if (alloc_) {
-        res_->deallocMemory(device_, alloc_);
-    }
-}
-
-size_t StackDeviceMemory::Stack::getSizeAvailable() const {
-    return (end_ - head_);
-}
-
-char* StackDeviceMemory::Stack::getAlloc(size_t size, cudaStream_t stream) {
-    // The user must check to see that the allocation fit within us
-    auto sizeRemaining = getSizeAvailable();
-
-    FAISS_ASSERT(size <= sizeRemaining);
-
-    // We can make the allocation out of our stack
-    // Find all the ranges that we overlap that may have been
-    // previously allocated; our allocation will be [head, endAlloc)
-    char* startAlloc = head_;
-    char* endAlloc = head_ + size;
-
-    while (lastUsers_.size() > 0) {
-        auto& prevUser = lastUsers_.back();
-
-        // Because there is a previous user, we must overlap it
-        FAISS_ASSERT(
-                prevUser.start_ <= endAlloc && prevUser.end_ >= startAlloc);
-
-        if (stream != prevUser.stream_) {
-            // Synchronization required
-            streamWait({stream}, {prevUser.stream_});
-        }
-
-        if (endAlloc < prevUser.end_) {
-            // Update the previous user info
-            prevUser.start_ = endAlloc;
-
-            break;
-        }
-
-        // If we're the exact size of the previous request, then we
-        // don't need to continue
-        bool done = (prevUser.end_ == endAlloc);
-
-        lastUsers_.pop_back();
-
-        if (done) {
-            break;
-        }
-    }
-
-    head_ = endAlloc;
-    FAISS_ASSERT(head_ <= end_);
-
-    highWaterMemoryUsed_ =
-            std::max(highWaterMemoryUsed_, (size_t)(head_ - start_));
-    FAISS_ASSERT(startAlloc);
-    return startAlloc;
-}
-
-void StackDeviceMemory::Stack::returnAlloc(
-        char* p,
-        size_t size,
-        cudaStream_t stream) {
-    // This allocation should be within ourselves
-    FAISS_ASSERT(p >= start_ && p < end_);
-
-    // All allocations should have been adjusted to a multiple of 16 bytes
-    FAISS_ASSERT(size % 16 == 0);
-
-    // This is on our stack
-    // Allocations should be freed in the reverse order they are made
-    if (p + size != head_) {
-        FAISS_ASSERT(p + size == head_);
-    }
-
-    head_ = p;
-    lastUsers_.push_back(Range(p, p + size, stream));
-}
-
-std::string StackDeviceMemory::Stack::toString() const {
-    std::stringstream s;
-
-    s << "SDM device " << device_ << ": Total memory " << allocSize_ << " ["
-      << (void*)start_ << ", " << (void*)end_ << ")\n";
-    s << "     Available memory " << (size_t)(end_ - head_) << " ["
-      << (void*)head_ << ", " << (void*)end_ << ")\n";
-    s << "     High water temp alloc " << highWaterMemoryUsed_ << "\n";
-
-    int i = lastUsers_.size();
-    for (auto it = lastUsers_.rbegin(); it != lastUsers_.rend(); ++it) {
-        s << i-- << ": size " << (size_t)(it->end_ - it->start_) << " stream "
-          << it->stream_ << " [" << (void*)it->start_ << ", " << (void*)it->end_
-          << ")\n";
-    }
-
-    return s.str();
-}
-
-StackDeviceMemory::StackDeviceMemory(
-        GpuResources* res,
-        int device,
-        size_t allocPerDevice)
-        : device_(device), stack_(res, device, allocPerDevice) {}
-
-StackDeviceMemory::~StackDeviceMemory() {}
-
-int StackDeviceMemory::getDevice() const {
-    return device_;
-}
-
-size_t StackDeviceMemory::getSizeAvailable() const {
-    return stack_.getSizeAvailable();
-}
-
-std::string StackDeviceMemory::toString() const {
-    return stack_.toString();
-}
-
-void* StackDeviceMemory::allocMemory(cudaStream_t stream, size_t size) {
-    // All allocations should have been adjusted to a multiple of 16 bytes
-    FAISS_ASSERT(size % 16 == 0);
-    return stack_.getAlloc(size, stream);
-}
-
-void StackDeviceMemory::deallocMemory(
-        int device,
-        cudaStream_t stream,
-        size_t size,
-        void* p) {
-    FAISS_ASSERT(p);
-    FAISS_ASSERT(device == device_);
-
-    stack_.returnAlloc((char*)p, size, stream);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/StackDeviceMemory.h b/faiss/gpu_cuda/utils/StackDeviceMemory.h
deleted file mode 100644
index 26a7987a85bebce453944d817b8fa2903fcc8e96..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/StackDeviceMemory.h
+++ /dev/null
@@ -1,112 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda_runtime.h>
-#include <faiss/gpu/GpuResources.h>
-#include <list>
-#include <memory>
-#include <tuple>
-#include <unordered_map>
-
-namespace faiss {
-namespace gpu {
-
-/// Device memory manager that provides temporary memory allocations
-/// out of a region of memory, for a single device
-class StackDeviceMemory {
-   public:
-    /// Allocate a new region of memory that we manage
-    StackDeviceMemory(GpuResources* res, int device, size_t allocPerDevice);
-
-    /// Manage a region of memory for a particular device, with or
-    /// without ownership
-    StackDeviceMemory(int device, void* p, size_t size, bool isOwner);
-
-    ~StackDeviceMemory();
-
-    int getDevice() const;
-
-    /// All allocations requested should be a multiple of 16 bytes
-    void* allocMemory(cudaStream_t stream, size_t size);
-    void deallocMemory(int device, cudaStream_t, size_t size, void* p);
-
-    size_t getSizeAvailable() const;
-    std::string toString() const;
-
-   protected:
-    /// Previous allocation ranges and the streams for which
-    /// synchronization is required
-    struct Range {
-        inline Range(char* s, char* e, cudaStream_t str)
-                : start_(s), end_(e), stream_(str) {}
-
-        // References a memory range [start, end)
-        char* start_;
-        char* end_;
-        cudaStream_t stream_;
-    };
-
-    struct Stack {
-        /// Constructor that allocates memory via cudaMalloc
-        Stack(GpuResources* res, int device, size_t size);
-
-        ~Stack();
-
-        /// Returns how much size is available for an allocation without
-        /// calling cudaMalloc
-        size_t getSizeAvailable() const;
-
-        /// Obtains an allocation; all allocations are guaranteed to be 16
-        /// byte aligned
-        char* getAlloc(size_t size, cudaStream_t stream);
-
-        /// Returns an allocation
-        void returnAlloc(char* p, size_t size, cudaStream_t stream);
-
-        /// Returns the stack state
-        std::string toString() const;
-
-        /// Our GpuResources object
-        GpuResources* res_;
-
-        /// Device this allocation is on
-        int device_;
-
-        /// Where our temporary memory buffer is allocated; we allocate starting
-        /// 16 bytes into this
-        char* alloc_;
-
-        /// Total size of our allocation
-        size_t allocSize_;
-
-        /// Our temporary memory region; [start_, end_) is valid
-        char* start_;
-        char* end_;
-
-        /// Stack head within [start, end)
-        char* head_;
-
-        /// List of previous last users of allocations on our stack, for
-        /// possible synchronization purposes
-        std::list<Range> lastUsers_;
-
-        /// What's the high water mark in terms of memory used from the
-        /// temporary buffer?
-        size_t highWaterMemoryUsed_;
-    };
-
-    /// Our device
-    int device_;
-
-    /// Memory stack
-    Stack stack_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/StaticUtils.h b/faiss/gpu_cuda/utils/StaticUtils.h
deleted file mode 100644
index cc18e1475bf2aa3aa768c888dc1b024e6b7f2120..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/StaticUtils.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda.h>
-
-// allow usage for non-CUDA files
-#ifndef __host__
-#define __host__
-#define __device__
-#endif
-
-namespace faiss {
-namespace gpu {
-namespace utils {
-
-template <typename U, typename V>
-constexpr __host__ __device__ auto divDown(U a, V b) -> decltype(a + b) {
-    return (a / b);
-}
-
-template <typename U, typename V>
-constexpr __host__ __device__ auto divUp(U a, V b) -> decltype(a + b) {
-    return (a + b - 1) / b;
-}
-
-template <typename U, typename V>
-constexpr __host__ __device__ auto roundDown(U a, V b) -> decltype(a + b) {
-    return divDown(a, b) * b;
-}
-
-template <typename U, typename V>
-constexpr __host__ __device__ auto roundUp(U a, V b) -> decltype(a + b) {
-    return divUp(a, b) * b;
-}
-
-template <class T>
-constexpr __host__ __device__ T pow(T n, T power) {
-    return (power > 0 ? n * pow(n, power - 1) : 1);
-}
-
-template <class T>
-constexpr __host__ __device__ T pow2(T n) {
-    return pow(2, (T)n);
-}
-
-static_assert(pow2(8) == 256, "pow2");
-
-template <typename T>
-constexpr __host__ __device__ int log2(T n, int p = 0) {
-    return (n <= 1) ? p : log2(n / 2, p + 1);
-}
-
-static_assert(log2(2) == 1, "log2");
-static_assert(log2(3) == 1, "log2");
-static_assert(log2(4) == 2, "log2");
-
-template <typename T>
-constexpr __host__ __device__ bool isPowerOf2(T v) {
-    return (v && !(v & (v - 1)));
-}
-
-static_assert(isPowerOf2(2048), "isPowerOf2");
-static_assert(!isPowerOf2(3333), "isPowerOf2");
-
-template <typename T>
-constexpr __host__ __device__ T nextHighestPowerOf2(T v) {
-    return (isPowerOf2(v) ? (T)2 * v : ((T)1 << (log2(v) + 1)));
-}
-
-static_assert(nextHighestPowerOf2(1) == 2, "nextHighestPowerOf2");
-static_assert(nextHighestPowerOf2(2) == 4, "nextHighestPowerOf2");
-static_assert(nextHighestPowerOf2(3) == 4, "nextHighestPowerOf2");
-static_assert(nextHighestPowerOf2(4) == 8, "nextHighestPowerOf2");
-
-static_assert(nextHighestPowerOf2(15) == 16, "nextHighestPowerOf2");
-static_assert(nextHighestPowerOf2(16) == 32, "nextHighestPowerOf2");
-static_assert(nextHighestPowerOf2(17) == 32, "nextHighestPowerOf2");
-
-static_assert(
-        nextHighestPowerOf2(1536000000u) == 2147483648u,
-        "nextHighestPowerOf2");
-static_assert(
-        nextHighestPowerOf2((size_t)2147483648ULL) == (size_t)4294967296ULL,
-        "nextHighestPowerOf2");
-
-} // namespace utils
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/Tensor-inl.cuh b/faiss/gpu_cuda/utils/Tensor-inl.cuh
deleted file mode 100644
index aa2d03e5ccf0bd7b3226bf4116d99f3479115ccd..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/Tensor-inl.cuh
+++ /dev/null
@@ -1,1052 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/GpuFaissAssert.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <cstring>
-#include <limits>
-
-namespace faiss {
-namespace gpu {
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::Tensor()
-        : data_(nullptr) {
-    static_assert(Dim > 0, "must have > 0 dimensions");
-
-    for (int i = 0; i < Dim; ++i) {
-        size_[i] = 0;
-        stride_[i] = (IndexT)1;
-    }
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::Tensor(
-        Tensor<T, Dim, InnerContig, IndexT, PtrTraits>& t) {
-    this->operator=(t);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::Tensor(
-        Tensor<T, Dim, InnerContig, IndexT, PtrTraits>&& t) {
-    this->operator=(std::move(t));
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits>& Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::operator=(Tensor<T, Dim, InnerContig, IndexT, PtrTraits>&
-                                      t) {
-    data_ = t.data_;
-    for (int i = 0; i < Dim; ++i) {
-        size_[i] = t.size_[i];
-        stride_[i] = t.stride_[i];
-    }
-
-    return *this;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits>& Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::operator=(Tensor<T, Dim, InnerContig, IndexT, PtrTraits>&&
-                                      t) {
-    data_ = t.data_;
-    t.data_ = nullptr;
-    for (int i = 0; i < Dim; ++i) {
-        stride_[i] = t.stride_[i];
-        t.stride_[i] = 0;
-        size_[i] = t.size_[i];
-        t.size_[i] = 0;
-    }
-
-    return *this;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::Tensor(
-        DataPtrType data,
-        const IndexT sizes[Dim])
-        : data_(data) {
-    static_assert(Dim > 0, "must have > 0 dimensions");
-
-    for (int i = 0; i < Dim; ++i) {
-        size_[i] = sizes[i];
-    }
-
-    stride_[Dim - 1] = (IndexT)1;
-    for (int i = Dim - 2; i >= 0; --i) {
-        stride_[i] = stride_[i + 1] * sizes[i + 1];
-    }
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::Tensor(
-        DataPtrType data,
-        std::initializer_list<IndexT> sizes)
-        : data_(data) {
-    GPU_FAISS_ASSERT(sizes.size() == Dim);
-    static_assert(Dim > 0, "must have > 0 dimensions");
-
-    int i = 0;
-    for (auto s : sizes) {
-        size_[i++] = s;
-    }
-
-    stride_[Dim - 1] = (IndexT)1;
-    for (int j = Dim - 2; j >= 0; --j) {
-        stride_[j] = stride_[j + 1] * size_[j + 1];
-    }
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::Tensor(
-        DataPtrType data,
-        const IndexT sizes[Dim],
-        const IndexT strides[Dim])
-        : data_(data) {
-    static_assert(Dim > 0, "must have > 0 dimensions");
-
-    for (int i = 0; i < Dim; ++i) {
-        size_[i] = sizes[i];
-        stride_[i] = strides[i];
-    }
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ void Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::copyFrom(
-        const Tensor<T, Dim, InnerContig, IndexT, PtrTraits>& t,
-        cudaStream_t stream) {
-    // The tensor must be fully contiguous
-    GPU_FAISS_ASSERT(this->isContiguous());
-
-    // Size must be the same (since dimensions are checked and
-    // continuity is assumed, we need only check total number of
-    // elements
-    GPU_FAISS_ASSERT(this->numElements() == t.numElements());
-
-    if (t.numElements() > 0) {
-        GPU_FAISS_ASSERT(this->data_);
-        GPU_FAISS_ASSERT(t.data());
-
-        int ourDev = getDeviceForAddress(this->data_);
-        int tDev = getDeviceForAddress(t.data());
-
-        if (tDev == -1) {
-            CUDA_VERIFY(cudaMemcpyAsync(
-                    this->data_,
-                    t.data(),
-                    this->getSizeInBytes(),
-                    ourDev == -1 ? cudaMemcpyHostToHost
-                                 : cudaMemcpyHostToDevice,
-                    stream));
-        } else {
-            CUDA_VERIFY(cudaMemcpyAsync(
-                    this->data_,
-                    t.data(),
-                    this->getSizeInBytes(),
-                    ourDev == -1 ? cudaMemcpyDeviceToHost
-                                 : cudaMemcpyDeviceToDevice,
-                    stream));
-        }
-    }
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ void Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::copyTo(
-        Tensor<T, Dim, InnerContig, IndexT, PtrTraits>& t,
-        cudaStream_t stream) {
-    // The tensor must be fully contiguous
-    GPU_FAISS_ASSERT(this->isContiguous());
-
-    // Size must be the same (since dimensions are checked and
-    // continuity is assumed, we need only check total number of
-    // elements
-    GPU_FAISS_ASSERT(this->numElements() == t.numElements());
-
-    if (t.numElements() > 0) {
-        GPU_FAISS_ASSERT(this->data_);
-        GPU_FAISS_ASSERT(t.data());
-
-        int ourDev = getDeviceForAddress(this->data_);
-        int tDev = getDeviceForAddress(t.data());
-
-        if (tDev == -1) {
-            CUDA_VERIFY(cudaMemcpyAsync(
-                    t.data(),
-                    this->data_,
-                    this->getSizeInBytes(),
-                    ourDev == -1 ? cudaMemcpyHostToHost
-                                 : cudaMemcpyDeviceToHost,
-                    stream));
-        } else {
-            CUDA_VERIFY(cudaMemcpyAsync(
-                    t.data(),
-                    this->data_,
-                    this->getSizeInBytes(),
-                    ourDev == -1 ? cudaMemcpyHostToDevice
-                                 : cudaMemcpyDeviceToDevice,
-                    stream));
-        }
-    }
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ void Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::copyFrom(
-        const std::vector<T>& v,
-        cudaStream_t stream) {
-    // The tensor must be fully contiguous
-    GPU_FAISS_ASSERT(this->isContiguous());
-
-    // Size must be the same
-    GPU_FAISS_ASSERT(this->numElements() == v.size());
-
-    if (v.size() > 0) {
-        GPU_FAISS_ASSERT(this->data_);
-        int ourDev = getDeviceForAddress(this->data_);
-
-        CUDA_VERIFY(cudaMemcpyAsync(
-                this->data_,
-                v.data(),
-                this->getSizeInBytes(),
-                ourDev == -1 ? cudaMemcpyHostToHost : cudaMemcpyHostToDevice,
-                stream));
-    }
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ std::vector<T> Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::
-        copyToVector(cudaStream_t stream) {
-    // The tensor must be fully contiguous
-    GPU_FAISS_ASSERT(this->isContiguous());
-
-    std::vector<T> out(this->numElements());
-
-    if (!out.empty()) {
-        int ourDev = getDeviceForAddress(this->data_);
-
-        if (ourDev == -1) {
-            std::memcpy(
-                    out.data(), this->data_, this->numElements() * sizeof(T));
-        } else {
-            CUDA_VERIFY(cudaMemcpyAsync(
-                    out.data(),
-                    this->data_,
-                    this->numElements() * sizeof(T),
-                    cudaMemcpyDeviceToHost,
-                    stream));
-        }
-    }
-
-    return out;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <typename OtherT, int OtherDim>
-__host__ __device__ bool Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::isSame(
-        const Tensor<OtherT, OtherDim, InnerContig, IndexT, PtrTraits>& rhs)
-        const {
-    if (Dim != OtherDim) {
-        return false;
-    }
-
-    for (int i = 0; i < Dim; ++i) {
-        if (this->getSize(i) != rhs.getSize(i)) {
-            return false;
-        }
-
-        if (this->getStride(i) != rhs.getStride(i)) {
-            return false;
-        }
-    }
-
-    return true;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <typename OtherT, int OtherDim>
-__host__ __device__ bool Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::
-        isSameSize(
-                const Tensor<OtherT, OtherDim, InnerContig, IndexT, PtrTraits>&
-                        rhs) const {
-    if (Dim != OtherDim) {
-        return false;
-    }
-
-    for (int i = 0; i < Dim; ++i) {
-        if (this->getSize(i) != rhs.getSize(i)) {
-            return false;
-        }
-    }
-
-    return true;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <typename U>
-__host__ __device__ Tensor<U, Dim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::cast() {
-    static_assert(sizeof(U) == sizeof(T), "cast must be to same size object");
-
-    return Tensor<U, Dim, InnerContig, IndexT, PtrTraits>(
-            reinterpret_cast<U*>(data_), size_, stride_);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <typename U>
-__host__ __device__ const Tensor<U, Dim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::cast() const {
-    static_assert(sizeof(U) == sizeof(T), "cast must be to same size object");
-
-    return Tensor<U, Dim, InnerContig, IndexT, PtrTraits>(
-            reinterpret_cast<U*>(data_), size_, stride_);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <typename U>
-__host__ __device__ Tensor<U, Dim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::castResize() {
-    static_assert(sizeof(U) >= sizeof(T), "only handles greater sizes");
-    constexpr int kMultiple = sizeof(U) / sizeof(T);
-
-    GPU_FAISS_ASSERT(canCastResize<U>());
-
-    IndexT newSize[Dim];
-    IndexT newStride[Dim];
-
-    for (int i = 0; i < Dim - 1; ++i) {
-        newSize[i] = size_[i];
-        newStride[i] = stride_[i] / kMultiple;
-    }
-
-    newStride[Dim - 1] = 1; // this is the same as the old stride
-    newSize[Dim - 1] = size_[Dim - 1] / kMultiple;
-
-    return Tensor<U, Dim, InnerContig, IndexT, PtrTraits>(
-            reinterpret_cast<U*>(data_), newSize, newStride);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <typename U>
-__host__ __device__ const Tensor<U, Dim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::castResize() const {
-    return const_cast<Tensor<T, Dim, InnerContig, IndexT, PtrTraits>*>(this)
-            ->castResize<U>();
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <typename U>
-__host__ __device__ bool Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::
-        canCastResize() const {
-    static_assert(sizeof(U) >= sizeof(T), "only handles greater sizes");
-    constexpr int kMultiple = sizeof(U) / sizeof(T);
-
-    // Ensure that the base pointer is sizeof(U) aligned
-    if (((uintptr_t)data_) % sizeof(U) != 0) {
-        return false;
-    }
-
-    // Check all outer strides
-    for (int i = 0; i < Dim - 1; ++i) {
-        if (stride_[i] % kMultiple != 0) {
-            return false;
-        }
-    }
-
-    // Check inner size
-    if (size_[Dim - 1] % kMultiple != 0) {
-        return false;
-    }
-
-    if (stride_[Dim - 1] != 1) {
-        return false;
-    }
-
-    return true;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <typename NewIndexT>
-__host__ Tensor<T, Dim, InnerContig, NewIndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::castIndexType() const {
-    if (sizeof(NewIndexT) < sizeof(IndexT)) {
-        GPU_FAISS_ASSERT(this->canUseIndexType<NewIndexT>());
-    }
-
-    NewIndexT newSize[Dim];
-    NewIndexT newStride[Dim];
-    for (int i = 0; i < Dim; ++i) {
-        newSize[i] = (NewIndexT)size_[i];
-        newStride[i] = (NewIndexT)stride_[i];
-    }
-
-    return Tensor<T, Dim, InnerContig, NewIndexT, PtrTraits>(
-            data_, newSize, newStride);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <typename NewIndexT>
-__host__ bool Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::canUseIndexType()
-        const {
-    static_assert(sizeof(size_t) >= sizeof(IndexT), "index size too large");
-    static_assert(
-            sizeof(size_t) >= sizeof(NewIndexT), "new index size too large");
-
-    // Find maximum offset that can be calculated
-    // FIXME: maybe also consider offset in bytes? multiply by sizeof(T)?
-    size_t maxOffset = 0;
-
-    for (int i = 0; i < Dim; ++i) {
-        size_t curMaxOffset = (size_t)size_[i] * (size_t)stride_[i];
-        if (curMaxOffset > maxOffset) {
-            maxOffset = curMaxOffset;
-        }
-    }
-
-    if (maxOffset > (size_t)std::numeric_limits<NewIndexT>::max()) {
-        return false;
-    }
-
-    return true;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ size_t
-Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::numElements() const {
-    size_t size = (size_t)getSize(0);
-
-    for (int i = 1; i < Dim; ++i) {
-        size *= (size_t)getSize(i);
-    }
-
-    return size;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ bool Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::
-        isContiguous() const {
-    long prevSize = 1;
-
-    for (int i = Dim - 1; i >= 0; --i) {
-        if (getSize(i) != (IndexT)1) {
-            if (getStride(i) == prevSize) {
-                prevSize *= getSize(i);
-            } else {
-                return false;
-            }
-        }
-    }
-
-    return true;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ bool Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::
-        isConsistentlySized(int i) const {
-    if (i == 0 && getStride(i) > 0 && getSize(i) > 0) {
-        return true;
-    } else if (
-            (i > 0) && (i < Dim) && (getStride(i) > 0) &&
-            ((getStride(i - 1) / getStride(i)) >= getSize(i))) {
-        return true;
-    }
-
-    return false;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ bool Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::
-        isConsistentlySized() const {
-    for (int i = 0; i < Dim; ++i) {
-        if (!isConsistentlySized(i)) {
-            return false;
-        }
-    }
-
-    return true;
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ bool Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::
-        isContiguousDim(int i) const {
-    return (i == Dim - 1) || // just in case
-            ((i < Dim - 1) &&
-             ((getStride(i) / getStride(i + 1)) == getSize(i + 1)));
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::transpose(int dim1, int dim2) const {
-    GPU_FAISS_ASSERT(dim1 >= 0 && dim1 < Dim);
-    GPU_FAISS_ASSERT(dim2 >= 0 && dim2 < Dim);
-
-    // If a tensor is innermost contiguous, one cannot transpose the innermost
-    // dimension
-    if (InnerContig) {
-        GPU_FAISS_ASSERT(dim1 != Dim - 1 && dim2 != Dim - 1);
-    }
-
-    IndexT newSize[Dim];
-    IndexT newStride[Dim];
-
-    for (int i = 0; i < Dim; ++i) {
-        newSize[i] = size_[i];
-        newStride[i] = stride_[i];
-    }
-
-    IndexT tmp = newSize[dim1];
-    newSize[dim1] = newSize[dim2];
-    newSize[dim2] = tmp;
-
-    tmp = newStride[dim1];
-    newStride[dim1] = newStride[dim2];
-    newStride[dim2] = tmp;
-
-    return Tensor<T, Dim, true, IndexT, PtrTraits>(data_, newSize, newStride);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ Tensor<T, Dim, false, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::transposeInnermost(int dim1) const {
-    GPU_FAISS_ASSERT(dim1 >= 0 && dim1 < Dim);
-
-    // We are exchanging with the innermost dimension
-    int dim2 = 1;
-
-    IndexT newSize[Dim];
-    IndexT newStride[Dim];
-
-    for (int i = 0; i < Dim; ++i) {
-        newSize[i] = size_[i];
-        newStride[i] = stride_[i];
-    }
-
-    IndexT tmp = newSize[dim1];
-    newSize[dim1] = newSize[dim2];
-    newSize[dim2] = tmp;
-
-    tmp = newStride[dim1];
-    newStride[dim1] = newStride[dim2];
-    newStride[dim2] = tmp;
-
-    return Tensor<T, Dim, false, IndexT, PtrTraits>(data_, newSize, newStride);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <int NewDim>
-__host__ __device__ Tensor<T, NewDim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::upcastOuter() {
-    // Can only create tensors of greater dimension
-    static_assert(NewDim > Dim, "Can only upcast to greater dim");
-
-    IndexT newSize[NewDim];
-    IndexT newStride[NewDim];
-
-    int shift = NewDim - Dim;
-
-    for (int i = 0; i < NewDim; ++i) {
-        if (i < shift) {
-            // These are the extended dimensions
-            newSize[i] = (IndexT)1;
-            newStride[i] = size_[0] * stride_[0];
-        } else {
-            // Shift the remaining dimensions
-            newSize[i] = size_[i - shift];
-            newStride[i] = stride_[i - shift];
-        }
-    }
-
-    return Tensor<T, NewDim, InnerContig, IndexT, PtrTraits>(
-            data_, newSize, newStride);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <int NewDim>
-__host__ __device__ Tensor<T, NewDim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::upcastInner() {
-    // Can only create tensors of greater dimension
-    static_assert(NewDim > Dim, "Can only upcast to greater dim");
-
-    IndexT newSize[NewDim];
-    IndexT newStride[NewDim];
-
-    for (int i = 0; i < NewDim; ++i) {
-        if (i < Dim) {
-            // Existing dimensions get copied over
-            newSize[i] = size_[i];
-            newStride[i] = stride_[i];
-        } else {
-            // Extended dimensions
-            newSize[i] = (IndexT)1;
-            newStride[i] = (IndexT)1;
-        }
-    }
-
-    return Tensor<T, NewDim, InnerContig, IndexT, PtrTraits>(
-            data_, newSize, newStride);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <int NewDim>
-__host__ __device__ Tensor<T, NewDim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::downcastOuter() {
-    // Can only create tensors of lesser dimension
-    static_assert(NewDim < Dim, "Can only downcast to lesser dim");
-
-    // We can't downcast non-contiguous tensors, since it leaves
-    // garbage data in the tensor. The tensor needs to be contiguous
-    // in all of the dimensions we are collapsing (no padding in
-    // them).
-    for (int i = 0; i < Dim - NewDim; ++i) {
-        bool cont = isContiguousDim(i);
-        GPU_FAISS_ASSERT(cont);
-    }
-
-    IndexT newSize[NewDim];
-    IndexT newStride[NewDim];
-
-    int ignoredDims = Dim - NewDim;
-    IndexT collapsedSize = 1;
-
-    for (int i = 0; i < Dim; ++i) {
-        if (i < ignoredDims) {
-            // Collapse these dimensions
-            collapsedSize *= getSize(i);
-        } else {
-            // Non-collapsed dimensions
-            if (i == ignoredDims) {
-                // This is the first non-collapsed dimension
-                newSize[i - ignoredDims] = collapsedSize * getSize(i);
-            } else {
-                // Subsequent non-collapsed dimensions
-                newSize[i - ignoredDims] = getSize(i);
-            }
-
-            newStride[i - ignoredDims] = getStride(i);
-        }
-    }
-
-    return Tensor<T, NewDim, InnerContig, IndexT, PtrTraits>(
-            data_, newSize, newStride);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <int NewDim>
-__host__ __device__ Tensor<T, NewDim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::downcastInner() {
-    // Can only create tensors of lesser dimension
-    static_assert(NewDim < Dim, "Can only downcast to lesser dim");
-
-    // We can't downcast non-contiguous tensors, since it leaves
-    // garbage data in the tensor. The tensor needs to be contiguous
-    // in all of the dimensions we are collapsing (no padding in
-    // them).
-    for (int i = NewDim; i < Dim; ++i) {
-        GPU_FAISS_ASSERT(isContiguousDim(i));
-    }
-
-    IndexT newSize[NewDim];
-    IndexT newStride[NewDim];
-
-    IndexT collapsedSize = 1;
-
-    for (int i = Dim - 1; i >= 0; --i) {
-        if (i >= NewDim) {
-            // Collapse these dimensions
-            collapsedSize *= getSize(i);
-        } else {
-            // Non-collapsed dimensions
-            if (i == NewDim - 1) {
-                // This is the first non-collapsed dimension
-                newSize[i] = collapsedSize * getSize(i);
-                newStride[i] = getStride(Dim - 1);
-            } else {
-                // Subsequent non-collapsed dimensions
-                newSize[i] = getSize(i);
-                newStride[i] = getStride(i);
-            }
-        }
-    }
-
-    return Tensor<T, NewDim, InnerContig, IndexT, PtrTraits>(
-            data_, newSize, newStride);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <int SubDim>
-__host__ __device__ Tensor<T, SubDim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::view(DataPtrType at) {
-    static_assert(
-            SubDim >= 1 && SubDim < Dim, "can only create view of lesser dim");
-
-    IndexT viewSizes[SubDim];
-    IndexT viewStrides[SubDim];
-
-    for (int i = 0; i < SubDim; ++i) {
-        viewSizes[i] = size_[Dim - SubDim + i];
-        viewStrides[i] = stride_[Dim - SubDim + i];
-    }
-
-    return Tensor<T, SubDim, InnerContig, IndexT, PtrTraits>(
-            at, viewSizes, viewStrides);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <int SubDim>
-__host__ __device__ Tensor<T, SubDim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::view() {
-    return view<SubDim>(data_);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::narrowOutermost(IndexT start, IndexT size) {
-    return this->narrow(0, start, size);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::narrow(int dim, IndexT start, IndexT size) {
-    DataPtrType newData = data_;
-
-    GPU_FAISS_ASSERT(
-            start >= 0 && start < size_[dim] && (start + size) <= size_[dim]);
-
-    if (start > 0) {
-        newData += (size_t)start * stride_[dim];
-    }
-
-    IndexT newSize[Dim];
-    for (int i = 0; i < Dim; ++i) {
-        if (i == dim) {
-            GPU_FAISS_ASSERT(start + size <= size_[dim]);
-            newSize[i] = size;
-        } else {
-            newSize[i] = size_[i];
-        }
-    }
-
-    // If we were innermost contiguous before, we are still innermost contiguous
-    return Tensor<T, Dim, InnerContig, IndexT, PtrTraits>(
-            newData, newSize, stride_);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-template <int NewDim>
-__host__ __device__ Tensor<T, NewDim, InnerContig, IndexT, PtrTraits> Tensor<
-        T,
-        Dim,
-        InnerContig,
-        IndexT,
-        PtrTraits>::view(std::initializer_list<IndexT> sizes) {
-    GPU_FAISS_ASSERT(this->isContiguous());
-
-    GPU_FAISS_ASSERT(sizes.size() == NewDim);
-
-    // The total size of the new view must be the same as the total size
-    // of the old view
-    size_t curSize = numElements();
-    size_t newSize = 1;
-
-    for (auto s : sizes) {
-        newSize *= s;
-    }
-
-    GPU_FAISS_ASSERT(curSize == newSize);
-    return Tensor<T, NewDim, true, IndexT, PtrTraits>(data(), sizes);
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/Tensor.cuh b/faiss/gpu_cuda/utils/Tensor.cuh
deleted file mode 100644
index 2892e75cadf9baff487450e8dea923f255ebdf6a..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/Tensor.cuh
+++ /dev/null
@@ -1,697 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <assert.h>
-#include <cuda.h>
-#include <cuda_runtime.h>
-#include <initializer_list>
-#include <vector>
-
-/// Multi-dimensional array class for CUDA device and host usage.
-/// Originally from Facebook's fbcunn, since added to the Torch GPU
-/// library cutorch as well.
-
-namespace faiss {
-namespace gpu {
-
-/// Our tensor type
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-class Tensor;
-
-/// Type of a subspace of a tensor
-namespace detail {
-template <
-        typename TensorType,
-        int SubDim,
-        template <typename U>
-        class PtrTraits>
-class SubTensor;
-}
-
-namespace traits {
-
-template <typename T>
-struct RestrictPtrTraits {
-    typedef T* __restrict__ PtrType;
-};
-
-template <typename T>
-struct DefaultPtrTraits {
-    typedef T* PtrType;
-};
-
-} // namespace traits
-
-/**
-   Templated multi-dimensional array that supports strided access of
-   elements. Main access is through `operator[]`; e.g.,
-   `tensor[x][y][z]`.
-
-   - `T` is the contained type (e.g., `float`)
-   - `Dim` is the tensor rank
-   - If `InnerContig` is true, then the tensor is assumed to be innermost
-   - contiguous, and only operations that make sense on contiguous
-   - arrays are allowed (e.g., no transpose). Strides are still
-   - calculated, but innermost stride is assumed to be 1.
-   - `IndexT` is the integer type used for size/stride arrays, and for
-   - all indexing math. Default is `int`, but for large tensors, `long`
-   - can be used instead.
-   - `PtrTraits` are traits applied to our data pointer (T*). By default,
-   - this is just T*, but RestrictPtrTraits can be used to apply T*
-   - __restrict__ for alias-free analysis.
-*/
-template <
-        typename T,
-        int Dim,
-        bool InnerContig = false,
-        typename IndexT = int,
-        template <typename U> class PtrTraits = traits::DefaultPtrTraits>
-class Tensor {
-   public:
-    enum { NumDim = Dim };
-    typedef T DataType;
-    typedef IndexT IndexType;
-    enum { IsInnerContig = InnerContig };
-    typedef typename PtrTraits<T>::PtrType DataPtrType;
-    typedef Tensor<T, Dim, InnerContig, IndexT, PtrTraits> TensorType;
-
-    /// Default constructor
-    __host__ __device__ Tensor();
-
-    /// Copy constructor
-    __host__ __device__
-    Tensor(Tensor<T, Dim, InnerContig, IndexT, PtrTraits>& t);
-
-    /// Move constructor
-    __host__ __device__
-    Tensor(Tensor<T, Dim, InnerContig, IndexT, PtrTraits>&& t);
-
-    /// Assignment
-    __host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits>&
-    operator=(Tensor<T, Dim, InnerContig, IndexT, PtrTraits>& t);
-
-    /// Move assignment
-    __host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits>&
-    operator=(Tensor<T, Dim, InnerContig, IndexT, PtrTraits>&& t);
-
-    /// Constructor that calculates strides with no padding
-    __host__ __device__ Tensor(DataPtrType data, const IndexT sizes[Dim]);
-    __host__ __device__
-    Tensor(DataPtrType data, std::initializer_list<IndexT> sizes);
-
-    /// Constructor that takes arbitrary size/stride arrays.
-    /// Errors if you attempt to pass non-contiguous strides to a
-    /// contiguous tensor.
-    __host__ __device__
-    Tensor(DataPtrType data,
-           const IndexT sizes[Dim],
-           const IndexT strides[Dim]);
-
-    /// Copies a tensor into ourselves; sizes must match
-    __host__ void copyFrom(
-            const Tensor<T, Dim, InnerContig, IndexT, PtrTraits>& t,
-            cudaStream_t stream);
-
-    /// Copies ourselves into a tensor; sizes must match
-    __host__ void copyTo(
-            Tensor<T, Dim, InnerContig, IndexT, PtrTraits>& t,
-            cudaStream_t stream);
-
-    /// Copies a CPU std::vector<T> into ourselves, allocating memory for it.
-    /// The total size of our Tensor must match vector<T>::size(), though
-    /// we are not restricted to 1D Tensors to match the 1D vector<T>.
-    /// `stream` specifies the stream of the copy and thus the stream on which
-    /// the memory will initially be used.
-    __host__ void copyFrom(const std::vector<T>& v, cudaStream_t stream);
-
-    /// Copies ourselves into a flattened (1D) std::vector, using the given
-    /// stream
-    __host__ std::vector<T> copyToVector(cudaStream_t stream);
-
-    /// Returns true if the two tensors are of the same dimensionality,
-    /// size and stride.
-    template <typename OtherT, int OtherDim>
-    __host__ __device__ bool isSame(
-            const Tensor<OtherT, OtherDim, InnerContig, IndexT, PtrTraits>& rhs)
-            const;
-
-    /// Returns true if the two tensors are of the same dimensionality and size
-    template <typename OtherT, int OtherDim>
-    __host__ __device__ bool isSameSize(
-            const Tensor<OtherT, OtherDim, InnerContig, IndexT, PtrTraits>& rhs)
-            const;
-
-    /// Cast to a tensor of a different type of the same size and
-    /// stride. U and our type T must be of the same size
-    template <typename U>
-    __host__ __device__ Tensor<U, Dim, InnerContig, IndexT, PtrTraits> cast();
-
-    /// Const version of `cast`
-    template <typename U>
-    __host__ __device__ const Tensor<U, Dim, InnerContig, IndexT, PtrTraits>
-    cast() const;
-
-    /// Cast to a tensor of a different type which is potentially a
-    /// different size than our type T. Tensor must be aligned and the
-    /// innermost dimension must be a size that is a multiple of
-    /// sizeof(U) / sizeof(T), and the stride of the innermost dimension
-    /// must be contiguous. The stride of all outer dimensions must be a
-    /// multiple of sizeof(U) / sizeof(T) as well.
-    template <typename U>
-    __host__ __device__ Tensor<U, Dim, InnerContig, IndexT, PtrTraits>
-    castResize();
-
-    /// Const version of `castResize`
-    template <typename U>
-    __host__ __device__ const Tensor<U, Dim, InnerContig, IndexT, PtrTraits>
-    castResize() const;
-
-    /// Returns true if we can castResize() this tensor to the new type
-    template <typename U>
-    __host__ __device__ bool canCastResize() const;
-
-    /// Attempts to cast this tensor to a tensor of a different IndexT.
-    /// Fails if size or stride entries are not representable in the new
-    /// IndexT.
-    template <typename NewIndexT>
-    __host__ Tensor<T, Dim, InnerContig, NewIndexT, PtrTraits> castIndexType()
-            const;
-
-    /// Returns true if we can use this indexing type to access all elements
-    /// index type
-    template <typename NewIndexT>
-    __host__ bool canUseIndexType() const;
-
-    /// Returns a raw pointer to the start of our data.
-    __host__ __device__ inline DataPtrType data() {
-        return data_;
-    }
-
-    /// Returns a raw pointer to the end of our data, assuming
-    /// continuity
-    __host__ __device__ inline DataPtrType end() {
-        return data() + numElements();
-    }
-
-    /// Returns a raw pointer to the start of our data (const).
-    __host__ __device__ inline const DataPtrType data() const {
-        return data_;
-    }
-
-    /// Returns a raw pointer to the end of our data, assuming
-    /// continuity (const)
-    __host__ __device__ inline DataPtrType end() const {
-        return data() + numElements();
-    }
-
-    /// Cast to a different datatype
-    template <typename U>
-    __host__ __device__ inline typename PtrTraits<U>::PtrType dataAs() {
-        return reinterpret_cast<typename PtrTraits<U>::PtrType>(data_);
-    }
-
-    /// Cast to a different datatype
-    template <typename U>
-    __host__ __device__ inline const typename PtrTraits<const U>::PtrType
-    dataAs() const {
-        return reinterpret_cast<typename PtrTraits<const U>::PtrType>(data_);
-    }
-
-    /// Returns a read/write view of a portion of our tensor.
-    __host__ __device__ inline detail::SubTensor<TensorType, Dim - 1, PtrTraits>
-    operator[](IndexT);
-
-    /// Returns a read/write view of a portion of our tensor (const).
-    __host__ __device__ inline const detail::
-            SubTensor<TensorType, Dim - 1, PtrTraits>
-            operator[](IndexT) const;
-
-    /// Returns the size of a given dimension, `[0, Dim - 1]`. No bounds
-    /// checking.
-    __host__ __device__ inline IndexT getSize(int i) const {
-        return size_[i];
-    }
-
-    /// Returns the stride of a given dimension, `[0, Dim - 1]`. No bounds
-    /// checking.
-    __host__ __device__ inline IndexT getStride(int i) const {
-        return stride_[i];
-    }
-
-    /// Returns the total number of elements contained within our data
-    /// (product of `getSize(i)`)
-    __host__ __device__ size_t numElements() const;
-
-    /// If we are contiguous, returns the total size in bytes of our
-    /// data
-    __host__ __device__ size_t getSizeInBytes() const {
-        return numElements() * sizeof(T);
-    }
-
-    /// Returns the size array.
-    __host__ __device__ inline const IndexT* sizes() const {
-        return size_;
-    }
-
-    /// Returns the stride array.
-    __host__ __device__ inline const IndexT* strides() const {
-        return stride_;
-    }
-
-    /// Returns true if there is no padding within the tensor and no
-    /// re-ordering of the dimensions.
-    /// ~~~
-    /// (stride(i) == size(i + 1) * stride(i + 1)) && stride(dim - 1) == 0
-    /// ~~~
-    __host__ __device__ bool isContiguous() const;
-
-    /// Returns whether a given dimension has only increasing stride
-    /// from the previous dimension. A tensor that was permuted by
-    /// exchanging size and stride only will fail this check.
-    /// If `i == 0` just check `size > 0`. Returns `false` if `stride` is `<=
-    /// 0`.
-    __host__ __device__ bool isConsistentlySized(int i) const;
-
-    // Returns whether at each dimension `stride <= size`.
-    // If this is not the case then iterating once over the size space will
-    // touch the same memory locations multiple times.
-    __host__ __device__ bool isConsistentlySized() const;
-
-    /// Returns true if the given dimension index has no padding
-    __host__ __device__ bool isContiguousDim(int i) const;
-
-    /// Returns a tensor of the same dimension after transposing the two
-    /// dimensions given. Does not actually move elements; transposition
-    /// is made by permuting the size/stride arrays.
-    /// If the dimensions are not valid, asserts.
-    __host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits> transpose(
-            int dim1,
-            int dim2) const;
-
-    /// Transpose a tensor, exchanging a non-innermost dimension with the
-    /// innermost dimension, returning a no longer innermost contiguous tensor
-    __host__ __device__ Tensor<T, Dim, false, IndexT, PtrTraits>
-    transposeInnermost(int dim1) const;
-
-    /// Upcast a tensor of dimension `D` to some tensor of dimension
-    /// D' > D by padding the leading dimensions by 1
-    /// e.g., upcasting a 2-d tensor `[2][3]` to a 4-d tensor `[1][1][2][3]`
-    template <int NewDim>
-    __host__ __device__ Tensor<T, NewDim, InnerContig, IndexT, PtrTraits>
-    upcastOuter();
-
-    /// Upcast a tensor of dimension `D` to some tensor of dimension
-    /// D' > D by padding the lowest/most varying dimensions by 1
-    /// e.g., upcasting a 2-d tensor `[2][3]` to a 4-d tensor `[2][3][1][1]`
-    template <int NewDim>
-    __host__ __device__ Tensor<T, NewDim, InnerContig, IndexT, PtrTraits>
-    upcastInner();
-
-    /// Downcast a tensor of dimension `D` to some tensor of dimension
-    /// D' < D by collapsing the leading dimensions. asserts if there is
-    /// padding on the leading dimensions.
-    template <int NewDim>
-    __host__ __device__ Tensor<T, NewDim, InnerContig, IndexT, PtrTraits>
-    downcastOuter();
-
-    /// Downcast a tensor of dimension `D` to some tensor of dimension
-    /// D' < D by collapsing the leading dimensions. asserts if there is
-    /// padding on the leading dimensions.
-    template <int NewDim>
-    __host__ __device__ Tensor<T, NewDim, InnerContig, IndexT, PtrTraits>
-    downcastInner();
-
-    /// Returns a tensor that is a view of the `SubDim`-dimensional slice
-    /// of this tensor, starting at `at`.
-    template <int SubDim>
-    __host__ __device__ Tensor<T, SubDim, InnerContig, IndexT, PtrTraits> view(
-            DataPtrType at);
-
-    /// Returns a tensor that is a view of the `SubDim`-dimensional slice
-    /// of this tensor, starting where our data begins
-    template <int SubDim>
-    __host__ __device__ Tensor<T, SubDim, InnerContig, IndexT, PtrTraits> view();
-
-    /// Returns a tensor of the same dimension that is a view of the
-    /// original tensor with the specified dimension restricted to the
-    /// elements in the range [start, start + size)
-    __host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits>
-    narrowOutermost(IndexT start, IndexT size);
-
-    /// Returns a tensor of the same dimension that is a view of the
-    /// original tensor with the specified dimension restricted to the
-    /// elements in the range [start, start + size).
-    /// Can occur in an arbitrary dimension
-    __host__ __device__ Tensor<T, Dim, InnerContig, IndexT, PtrTraits> narrow(
-            int dim,
-            IndexT start,
-            IndexT size);
-
-    /// Returns a view of the given tensor expressed as a tensor of a
-    /// different number of dimensions.
-    /// Only works if we are contiguous.
-    template <int NewDim>
-    __host__ __device__ Tensor<T, NewDim, InnerContig, IndexT, PtrTraits> view(
-            std::initializer_list<IndexT> sizes);
-
-   protected:
-    /// Raw pointer to where the tensor data begins
-    DataPtrType data_;
-
-    /// Array of strides (in sizeof(T) terms) per each dimension
-    IndexT stride_[Dim];
-
-    /// Size per each dimension
-    IndexT size_[Dim];
-};
-
-// Utilities for checking a collection of tensors
-namespace detail {
-
-template <typename IndexType>
-bool canUseIndexType() {
-    return true;
-}
-
-template <typename IndexType, typename T, typename... U>
-bool canUseIndexType(const T& arg, const U&... args) {
-    return arg.template canUseIndexType<IndexType>() &&
-            canUseIndexType(args...);
-}
-
-} // namespace detail
-
-template <typename IndexType, typename... T>
-bool canUseIndexType(const T&... args) {
-    return detail::canUseIndexType(args...);
-}
-
-namespace detail {
-
-/// Specialization for a view of a single value (0-dimensional)
-template <typename TensorType, template <typename U> class PtrTraits>
-class SubTensor<TensorType, 0, PtrTraits> {
-   public:
-    __host__ __device__ SubTensor<TensorType, 0, PtrTraits> operator=(
-            typename TensorType::DataType val) {
-        *data_ = val;
-        return *this;
-    }
-
-    // operator T&
-    __host__ __device__ operator typename TensorType::DataType &() {
-        return *data_;
-    }
-
-    // const operator T& returning const T&
-    __host__ __device__ operator const typename TensorType::DataType &() const {
-        return *data_;
-    }
-
-    // operator& returning T*
-    __host__ __device__ typename TensorType::DataType* operator&() {
-        return data_;
-    }
-
-    // const operator& returning const T*
-    __host__ __device__ const typename TensorType::DataType* operator&() const {
-        return data_;
-    }
-
-    /// Returns a raw accessor to our slice.
-    __host__ __device__ inline typename TensorType::DataPtrType data() {
-        return data_;
-    }
-
-    /// Returns a raw accessor to our slice (const).
-    __host__ __device__ inline const typename TensorType::DataPtrType data()
-            const {
-        return data_;
-    }
-
-    /// Cast to a different datatype.
-    template <typename T>
-    __host__ __device__ T& as() {
-        return *dataAs<T>();
-    }
-
-    /// Cast to a different datatype (const).
-    template <typename T>
-    __host__ __device__ const T& as() const {
-        return *dataAs<T>();
-    }
-
-    /// Cast to a different datatype
-    template <typename T>
-    __host__ __device__ inline typename PtrTraits<T>::PtrType dataAs() {
-        return reinterpret_cast<typename PtrTraits<T>::PtrType>(data_);
-    }
-
-    /// Cast to a different datatype (const)
-    template <typename T>
-    __host__ __device__ inline typename PtrTraits<const T>::PtrType dataAs()
-            const {
-        return reinterpret_cast<typename PtrTraits<const T>::PtrType>(data_);
-    }
-
-    /// Use the texture cache for reads
-    __device__ inline typename TensorType::DataType ldg() const {
-#if __CUDA_ARCH__ >= 350
-        return __ldg(data_);
-#else
-        return *data_;
-#endif
-    }
-
-    /// Use the texture cache for reads; cast as a particular type
-    template <typename T>
-    __device__ inline T ldgAs() const {
-#if __CUDA_ARCH__ >= 350
-        return __ldg(dataAs<T>());
-#else
-        return as<T>();
-#endif
-    }
-
-   protected:
-    /// One dimension greater can create us
-    friend class SubTensor<TensorType, 1, PtrTraits>;
-
-    /// Our parent tensor can create us
-    friend class Tensor<
-            typename TensorType::DataType,
-            1,
-            TensorType::IsInnerContig,
-            typename TensorType::IndexType,
-            PtrTraits>;
-
-    __host__ __device__ inline SubTensor(
-            TensorType& t,
-            typename TensorType::DataPtrType data)
-            : tensor_(t), data_(data) {}
-
-    /// The tensor we're referencing
-    TensorType& tensor_;
-
-    /// Where our value is located
-    typename TensorType::DataPtrType const data_;
-};
-
-/// A `SubDim`-rank slice of a parent Tensor
-template <
-        typename TensorType,
-        int SubDim,
-        template <typename U>
-        class PtrTraits>
-class SubTensor {
-   public:
-    /// Returns a view of the data located at our offset (the dimension
-    /// `SubDim` - 1 tensor).
-    __host__ __device__ inline SubTensor<TensorType, SubDim - 1, PtrTraits>
-    operator[](typename TensorType::IndexType index) {
-        if (TensorType::IsInnerContig && SubDim == 1) {
-            // Innermost dimension is stride 1 for contiguous arrays
-            return SubTensor<TensorType, SubDim - 1, PtrTraits>(
-                    tensor_, data_ + index);
-        } else {
-            return SubTensor<TensorType, SubDim - 1, PtrTraits>(
-                    tensor_,
-                    data_ +
-                            index *
-                                    tensor_.getStride(
-                                            TensorType::NumDim - SubDim));
-        }
-    }
-
-    /// Returns a view of the data located at our offset (the dimension
-    /// `SubDim` - 1 tensor) (const).
-    __host__ __device__ inline const SubTensor<
-            TensorType,
-            SubDim - 1,
-            PtrTraits>
-    operator[](typename TensorType::IndexType index) const {
-        if (TensorType::IsInnerContig && SubDim == 1) {
-            // Innermost dimension is stride 1 for contiguous arrays
-            return SubTensor<TensorType, SubDim - 1, PtrTraits>(
-                    tensor_, data_ + index);
-        } else {
-            return SubTensor<TensorType, SubDim - 1, PtrTraits>(
-                    tensor_,
-                    data_ +
-                            index *
-                                    tensor_.getStride(
-                                            TensorType::NumDim - SubDim));
-        }
-    }
-
-    // operator& returning T*
-    __host__ __device__ typename TensorType::DataType* operator&() {
-        return data_;
-    }
-
-    // const operator& returning const T*
-    __host__ __device__ const typename TensorType::DataType* operator&() const {
-        return data_;
-    }
-
-    /// Returns a raw accessor to our slice.
-    __host__ __device__ inline typename TensorType::DataPtrType data() {
-        return data_;
-    }
-
-    /// Returns a raw accessor to our slice (const).
-    __host__ __device__ inline const typename TensorType::DataPtrType data()
-            const {
-        return data_;
-    }
-
-    /// Cast to a different datatype.
-    template <typename T>
-    __host__ __device__ T& as() {
-        return *dataAs<T>();
-    }
-
-    /// Cast to a different datatype (const).
-    template <typename T>
-    __host__ __device__ const T& as() const {
-        return *dataAs<T>();
-    }
-
-    /// Cast to a different datatype
-    template <typename T>
-    __host__ __device__ inline typename PtrTraits<T>::PtrType dataAs() {
-        return reinterpret_cast<typename PtrTraits<T>::PtrType>(data_);
-    }
-
-    /// Cast to a different datatype (const)
-    template <typename T>
-    __host__ __device__ inline typename PtrTraits<const T>::PtrType dataAs()
-            const {
-        return reinterpret_cast<typename PtrTraits<const T>::PtrType>(data_);
-    }
-
-    /// Use the texture cache for reads
-    __device__ inline typename TensorType::DataType ldg() const {
-#if __CUDA_ARCH__ >= 350
-        return __ldg(data_);
-#else
-        return *data_;
-#endif
-    }
-
-    /// Use the texture cache for reads; cast as a particular type
-    template <typename T>
-    __device__ inline T ldgAs() const {
-#if __CUDA_ARCH__ >= 350
-        return __ldg(dataAs<T>());
-#else
-        return as<T>();
-#endif
-    }
-
-    /// Returns a tensor that is a view of the SubDim-dimensional slice
-    /// of this tensor, starting where our data begins
-    Tensor<typename TensorType::DataType,
-           SubDim,
-           TensorType::IsInnerContig,
-           typename TensorType::IndexType,
-           PtrTraits>
-    view() {
-        return tensor_.template view<SubDim>(data_);
-    }
-
-   protected:
-    /// One dimension greater can create us
-    friend class SubTensor<TensorType, SubDim + 1, PtrTraits>;
-
-    /// Our parent tensor can create us
-    friend class Tensor<
-            typename TensorType::DataType,
-            TensorType::NumDim,
-            TensorType::IsInnerContig,
-            typename TensorType::IndexType,
-            PtrTraits>;
-
-    __host__ __device__ inline SubTensor(
-            TensorType& t,
-            typename TensorType::DataPtrType data)
-            : tensor_(t), data_(data) {}
-
-    /// The tensor we're referencing
-    TensorType& tensor_;
-
-    /// The start of our sub-region
-    typename TensorType::DataPtrType const data_;
-};
-
-} // namespace detail
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ inline detail::SubTensor<
-        Tensor<T, Dim, InnerContig, IndexT, PtrTraits>,
-        Dim - 1,
-        PtrTraits>
-Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::operator[](IndexT index) {
-    return detail::SubTensor<TensorType, Dim - 1, PtrTraits>(
-            detail::SubTensor<TensorType, Dim, PtrTraits>(*this, data_)[index]);
-}
-
-template <
-        typename T,
-        int Dim,
-        bool InnerContig,
-        typename IndexT,
-        template <typename U>
-        class PtrTraits>
-__host__ __device__ inline const detail::SubTensor<
-        Tensor<T, Dim, InnerContig, IndexT, PtrTraits>,
-        Dim - 1,
-        PtrTraits>
-Tensor<T, Dim, InnerContig, IndexT, PtrTraits>::operator[](IndexT index) const {
-    return detail::SubTensor<TensorType, Dim - 1, PtrTraits>(
-            detail::SubTensor<TensorType, Dim, PtrTraits>(
-                    const_cast<TensorType&>(*this), data_)[index]);
-}
-
-} // namespace gpu
-} // namespace faiss
-
-#include <faiss/gpu/utils/Tensor-inl.cuh>
diff --git a/faiss/gpu_cuda/utils/ThrustAllocator.cuh b/faiss/gpu_cuda/utils/ThrustAllocator.cuh
deleted file mode 100644
index 1951e5415339e95657cd3b9e71b629e22041e9b3..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/ThrustAllocator.cuh
+++ /dev/null
@@ -1,81 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda.h>
-#include <faiss/gpu/GpuResources.h>
-#include <unordered_set>
-
-namespace faiss {
-namespace gpu {
-
-/// Allocator for Thrust that comes out of a specified memory space
-class GpuResourcesThrustAllocator {
-   public:
-    typedef char value_type;
-
-    inline GpuResourcesThrustAllocator(
-            GpuResources* res,
-            cudaStream_t stream,
-            void* mem,
-            size_t size)
-            : res_(res),
-              stream_(stream),
-              start_((char*)mem),
-              cur_((char*)mem),
-              end_((char*)mem + size) {}
-
-    inline ~GpuResourcesThrustAllocator() {
-        // In the case of an exception being thrown, we may not have called
-        // deallocate on all of our sub-allocations. Free them here
-        for (auto p : mallocAllocs_) {
-            res_->deallocMemory(getCurrentDevice(), p);
-        }
-    }
-
-    inline char* allocate(std::ptrdiff_t size) {
-        if (size <= (end_ - cur_)) {
-            char* p = cur_;
-            cur_ += size;
-            FAISS_ASSERT(cur_ <= end_);
-
-            return p;
-        } else {
-            // FIXME: we cannot use temporary memory for new requests because
-            // the current temporary memory allocator cannot handle stream
-            // synchronization at present, so just allocate through the general
-            // device
-            char* p = (char*)res_->allocMemory(AllocRequest(
-                    makeDevAlloc(AllocType::Other, stream_), size));
-
-            mallocAllocs_.insert(p);
-            return p;
-        }
-    }
-
-    inline void deallocate(char* p, size_t size) {
-        // Allocations could be returned out-of-order; ignore those we
-        // didn't cudaMalloc
-        auto it = mallocAllocs_.find(p);
-        if (it != mallocAllocs_.end()) {
-            res_->deallocMemory(getCurrentDevice(), p);
-            mallocAllocs_.erase(it);
-        }
-    }
-
-   private:
-    GpuResources* res_;
-    cudaStream_t stream_;
-    char* start_;
-    char* cur_;
-    char* end_;
-    std::unordered_set<char*> mallocAllocs_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/Timer.cpp b/faiss/gpu_cuda/utils/Timer.cpp
deleted file mode 100644
index 0d75b64fc7af76a90ec497055bccf66ad76d6eef..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/Timer.cpp
+++ /dev/null
@@ -1,55 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/Timer.h>
-#include <faiss/impl/FaissAssert.h>
-#include <chrono>
-
-namespace faiss {
-namespace gpu {
-
-KernelTimer::KernelTimer(cudaStream_t stream)
-        : startEvent_(0), stopEvent_(0), stream_(stream), valid_(true) {
-    CUDA_VERIFY(cudaEventCreate(&startEvent_));
-    CUDA_VERIFY(cudaEventCreate(&stopEvent_));
-
-    CUDA_VERIFY(cudaEventRecord(startEvent_, stream_));
-}
-
-KernelTimer::~KernelTimer() {
-    CUDA_VERIFY(cudaEventDestroy(startEvent_));
-    CUDA_VERIFY(cudaEventDestroy(stopEvent_));
-}
-
-float KernelTimer::elapsedMilliseconds() {
-    FAISS_ASSERT(valid_);
-
-    CUDA_VERIFY(cudaEventRecord(stopEvent_, stream_));
-    CUDA_VERIFY(cudaEventSynchronize(stopEvent_));
-
-    auto time = 0.0f;
-    CUDA_VERIFY(cudaEventElapsedTime(&time, startEvent_, stopEvent_));
-    valid_ = false;
-
-    return time;
-}
-
-CpuTimer::CpuTimer() {
-    start_ = std::chrono::steady_clock::now();
-}
-
-float CpuTimer::elapsedMilliseconds() {
-    auto end = std::chrono::steady_clock::now();
-
-    std::chrono::duration<float, std::milli> duration = end - start_;
-
-    return duration.count();
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/Timer.h b/faiss/gpu_cuda/utils/Timer.h
deleted file mode 100644
index 7abfa4c9032b2f01462de7a77035daf25a31a699..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/Timer.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda_runtime.h>
-#include <chrono>
-
-namespace faiss {
-namespace gpu {
-
-/// Utility class for timing execution of a kernel
-class KernelTimer {
-   public:
-    /// Constructor starts the timer and adds an event into the current
-    /// device stream
-    KernelTimer(cudaStream_t stream = 0);
-
-    /// Destructor releases event resources
-    ~KernelTimer();
-
-    /// Adds a stop event then synchronizes on the stop event to get the
-    /// actual GPU-side kernel timings for any kernels launched in the
-    /// current stream. Returns the number of milliseconds elapsed.
-    /// Can only be called once.
-    float elapsedMilliseconds();
-
-   private:
-    cudaEvent_t startEvent_;
-    cudaEvent_t stopEvent_;
-    cudaStream_t stream_;
-    bool valid_;
-};
-
-/// CPU wallclock elapsed timer
-class CpuTimer {
-   public:
-    /// Creates and starts a new timer
-    CpuTimer();
-
-    /// Returns elapsed time in milliseconds
-    float elapsedMilliseconds();
-
-   private:
-    std::chrono::time_point<std::chrono::steady_clock> start_;
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/Transpose.cuh b/faiss/gpu_cuda/utils/Transpose.cuh
deleted file mode 100644
index 2454ef10b620050f5b76dc6ca4f29ab10bb02a76..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/Transpose.cuh
+++ /dev/null
@@ -1,225 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda.h>
-#include <faiss/gpu/utils/DeviceUtils.h>
-#include <faiss/gpu/utils/StaticUtils.h>
-#include <faiss/impl/FaissAssert.h>
-#include <stdint.h>
-#include <faiss/gpu/utils/Tensor.cuh>
-
-namespace faiss {
-namespace gpu {
-
-template <typename T, typename IndexT>
-struct TensorInfo {
-    static constexpr int kMaxDims = 8;
-
-    T* data;
-    IndexT sizes[kMaxDims];
-    IndexT strides[kMaxDims];
-    int dims;
-};
-
-template <typename T, typename IndexT, int Dim>
-struct TensorInfoOffset {
-    __device__ inline static unsigned int get(
-            const TensorInfo<T, IndexT>& info,
-            IndexT linearId) {
-        IndexT offset = 0;
-
-#pragma unroll
-        for (int i = Dim - 1; i >= 0; --i) {
-            IndexT curDimIndex = linearId % info.sizes[i];
-            IndexT curDimOffset = curDimIndex * info.strides[i];
-
-            offset += curDimOffset;
-
-            if (i > 0) {
-                linearId /= info.sizes[i];
-            }
-        }
-
-        return offset;
-    }
-};
-
-template <typename T, typename IndexT>
-struct TensorInfoOffset<T, IndexT, -1> {
-    __device__ inline static unsigned int get(
-            const TensorInfo<T, IndexT>& info,
-            IndexT linearId) {
-        return linearId;
-    }
-};
-
-template <typename T, typename IndexT, int Dim>
-TensorInfo<T, IndexT> getTensorInfo(const Tensor<T, Dim, true>& t) {
-    TensorInfo<T, IndexT> info;
-
-    for (int i = 0; i < Dim; ++i) {
-        info.sizes[i] = (IndexT)t.getSize(i);
-        info.strides[i] = (IndexT)t.getStride(i);
-    }
-
-    info.data = t.data();
-    info.dims = Dim;
-
-    return info;
-}
-
-template <typename T, typename IndexT, int DimInput, int DimOutput>
-__global__ void transposeAny(
-        TensorInfo<T, IndexT> input,
-        TensorInfo<T, IndexT> output,
-        IndexT totalSize) {
-    for (IndexT i = blockIdx.x * blockDim.x + threadIdx.x; i < totalSize;
-         i += gridDim.x * blockDim.x) {
-        auto inputOffset = TensorInfoOffset<T, IndexT, DimInput>::get(input, i);
-        auto outputOffset =
-                TensorInfoOffset<T, IndexT, DimOutput>::get(output, i);
-
-#if __CUDA_ARCH__ >= 350
-        output.data[outputOffset] = __ldg(&input.data[inputOffset]);
-#else
-        output.data[outputOffset] = input.data[inputOffset];
-#endif
-    }
-}
-
-// Transpose contiguous t1 t2 i1 -> t2 t1 i1
-template <typename T, typename IndexT>
-__global__ void transposeOuter(
-        const T* in,
-        T* out,
-        IndexT t1,
-        IndexT t2,
-        IndexT i1) {
-    IndexT gt2 = blockIdx.x;
-    for (IndexT gt1 = blockIdx.y; gt1 < t1; gt1 += gridDim.y) {
-        auto curIn = in + i1 * (gt1 * t2 + gt2);
-        auto curOut = out + i1 * (gt2 * t1 + gt1);
-
-        for (IndexT i = threadIdx.x; i < i1; i += blockDim.x) {
-            curOut[i] = curIn[i];
-        }
-    }
-}
-
-/// Performs an out-of-place transposition between any two dimensions.
-/// Best performance is if the transposed dimensions are not
-/// innermost, since the reads and writes will be coalesced.
-/// Could include a shared memory transposition if the dimensions
-/// being transposed are innermost, but would require support for
-/// arbitrary rectangular matrices.
-/// This linearized implementation seems to perform well enough,
-/// especially for cases that we care about (outer dimension
-/// transpositions).
-template <typename T, int Dim>
-void runTransposeAny(
-        Tensor<T, Dim, true>& in,
-        int dim1,
-        int dim2,
-        Tensor<T, Dim, true>& out,
-        cudaStream_t stream) {
-    static_assert(
-            Dim <= TensorInfo<T, unsigned int>::kMaxDims,
-            "too many dimensions");
-
-    FAISS_ASSERT(dim1 != dim2);
-    FAISS_ASSERT(dim1 < Dim && dim2 < Dim);
-
-    // Rearrange dim1 and dim2 in increasing order in order to see if this is an
-    // outer dimension transposition (below)
-    if (dim1 > dim2) {
-        std::swap(dim1, dim2);
-    }
-
-    int outSize[Dim];
-
-    for (int i = 0; i < Dim; ++i) {
-        outSize[i] = in.getSize(i);
-    }
-
-    std::swap(outSize[dim1], outSize[dim2]);
-
-    for (int i = 0; i < Dim; ++i) {
-        FAISS_ASSERT(out.getSize(i) == outSize[i]);
-    }
-
-    auto maxThreads = getMaxThreadsCurrentDevice();
-    auto totalSize = in.numElements();
-
-    // Is this a transposition of the two outer dimensions?
-    bool isTransposeOuter = (Dim >= 3) && (dim1 == 0) && (dim2 == 1);
-    if (isTransposeOuter) {
-        // Outer dimension transposition only (there is a contiguous inner
-        // dimension)
-        size_t innerSize = 1;
-        for (int i = 2; i < Dim; ++i) {
-            innerSize *= in.getSize(i);
-        }
-
-        // The grid y dimension is more limited; we do a grid loop if necessary
-        int maxGridY = getCurrentDeviceProperties().maxGridSize[1];
-        auto grid = dim3(in.getSize(1), std::min(in.getSize(0), maxGridY));
-
-        int block = (innerSize < maxThreads) ? innerSize : maxThreads;
-
-        if (totalSize <= (size_t)std::numeric_limits<int>::max()) {
-            transposeOuter<T, int32_t><<<grid, block, 0, stream>>>(
-                    in.data(),
-                    out.data(),
-                    in.getSize(0),
-                    in.getSize(1),
-                    innerSize);
-        } else {
-            transposeOuter<T, int64_t><<<grid, block, 0, stream>>>(
-                    in.data(),
-                    out.data(),
-                    in.getSize(0),
-                    in.getSize(1),
-                    innerSize);
-        }
-    } else {
-        int block = (totalSize < maxThreads) ? totalSize : maxThreads;
-
-        // Non-outer transposition
-        if (totalSize <= (size_t)std::numeric_limits<int>::max()) {
-            // General transposition
-            // div/mod seems faster with unsigned types
-            auto inInfo = getTensorInfo<T, uint32_t, Dim>(in);
-            auto outInfo = getTensorInfo<T, uint32_t, Dim>(out);
-
-            std::swap(inInfo.sizes[dim1], inInfo.sizes[dim2]);
-            std::swap(inInfo.strides[dim1], inInfo.strides[dim2]);
-
-            auto grid = std::min(utils::divUp(totalSize, block), (size_t)4096);
-
-            transposeAny<T, uint32_t, Dim, -1>
-                    <<<grid, block, 0, stream>>>(inInfo, outInfo, totalSize);
-        } else {
-            auto inInfo = getTensorInfo<T, uint64_t, Dim>(in);
-            auto outInfo = getTensorInfo<T, uint64_t, Dim>(out);
-
-            std::swap(inInfo.sizes[dim1], inInfo.sizes[dim2]);
-            std::swap(inInfo.strides[dim1], inInfo.strides[dim2]);
-
-            auto grid = std::min(utils::divUp(totalSize, block), (size_t)4096);
-
-            transposeAny<T, uint64_t, Dim, -1>
-                    <<<grid, block, 0, stream>>>(inInfo, outInfo, totalSize);
-        }
-    }
-
-    CUDA_TEST_ERROR();
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/WarpPackedBits.cuh b/faiss/gpu_cuda/utils/WarpPackedBits.cuh
deleted file mode 100644
index c079874ad9f4373712ceef595f53fde22fc5538d..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/WarpPackedBits.cuh
+++ /dev/null
@@ -1,281 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/PtxUtils.cuh>
-#include <faiss/gpu/utils/WarpShuffles.cuh>
-
-namespace faiss {
-namespace gpu {
-
-//
-// Warp-coalesced parallel reading and writing of packed bits
-//
-
-// Read/write native word sizes
-template <typename WordT, int Bits>
-struct WarpPackedBits {
-    static __device__ void write(int laneId, WordT v, bool valid, WordT* out) {
-        static_assert(sizeof(WordT) == Bits / 8 && (Bits % 8) == 0, "");
-        // We can just write directly
-        if (valid) {
-            out[laneId] = v;
-        }
-    }
-
-    static inline __device__ WordT read(int laneId, WordT* in) {
-        return in[laneId];
-    }
-
-    static inline __device__ WordT postRead(int laneId, WordT v) {
-        return v;
-    }
-};
-
-// Read/write 6 bit fields, packed across the warp into 24 bytes
-template <>
-struct WarpPackedBits<uint8_t, 6> {
-    static __device__ void write(
-            int laneId,
-            uint8_t v,
-            bool valid,
-            uint8_t* out) {
-        // Lower 24 lanes wwrite out packed data
-        int laneFrom = (laneId * 8) / 6;
-
-        v = valid ? v : 0;
-        v &= 0x3f; // ensure we have only 6 bits
-
-        uint8_t vLower =
-                (uint8_t)SHFL_SYNC((unsigned int)v, laneFrom, kWarpSize);
-        uint8_t vUpper =
-                (uint8_t)SHFL_SYNC((unsigned int)v, laneFrom + 1, kWarpSize);
-
-        // lsb     ...    msb
-        // 0: 0 0 0 0 0 0 1 1
-        // 1: 1 1 1 1 2 2 2 2
-        // 2: 2 2 3 3 3 3 3 3
-        int typeLane = laneId % 3;
-        uint8_t vOut = 0;
-        switch (typeLane) {
-            case 0:
-                // 6 msbs of lower as vOut lsbs
-                // 2 lsbs of upper as vOut msbs
-                vOut = vLower | (vUpper << 6);
-                break;
-            case 1:
-                // 4 msbs of lower as vOut lsbs
-                // 4 lsbs of upper as vOut msbs
-                vOut = (vLower >> 2) | (vUpper << 4);
-                break;
-            case 2:
-                // 2 msbs of lower as vOut lsbs
-                // 6 lsbs of upper as vOut msbs
-                vOut = (vLower >> 4) | (vUpper << 2);
-                break;
-        }
-
-        if (laneId < 24) {
-            // There could be prior data
-            out[laneId] |= vOut;
-        }
-    }
-
-    static inline __device__ uint8_t read(int laneId, uint8_t* in) {
-        uint8_t v = 0;
-
-        if (laneId < 24) {
-            v = in[laneId];
-        }
-
-        return v;
-    }
-
-    static inline __device__ uint8_t postRead(int laneId, uint8_t v) {
-        int laneFrom = (laneId * 6) / 8;
-
-        auto vLower = SHFL_SYNC((unsigned int)v, laneFrom, kWarpSize);
-        auto vUpper = SHFL_SYNC((unsigned int)v, laneFrom + 1, kWarpSize);
-        auto vConcat = (vUpper << 8) | vLower;
-
-        // Now, this is weird. Each lane reads two uint8, but we wish to use the
-        // bfe.u32 instruction to read a 6 bit value from the concatenated
-        // uint32. The offset in which we wish to read in the concatenated word
-        // is the following:
-        //
-        // 0: 0, 1: offset 0 size 6
-        // 1: 0, 1: offset 6 size 6
-        // 2: 1, 2: offset 4 size 6
-        // 3: 2, 3: offset 2 size 6
-        //
-        // The offsets are the following (concatenated together):
-        // 0x2460
-        // We can thus use bfe.u32 as a lookup table for the above sequence.
-        unsigned int pos;
-        GET_BITFIELD_U32(pos, 0x2460, (laneId & 0x3) * 4, 4);
-
-        unsigned int out;
-        GET_BITFIELD_U32(out, vConcat, pos, 6);
-
-        return out;
-    }
-};
-
-// Read/write 5 bit fields, packed across the warp into 20 bytes
-template <>
-struct WarpPackedBits<uint8_t, 5> {
-    static __device__ void write(
-            int laneId,
-            uint8_t v,
-            bool valid,
-            uint8_t* out) {
-        // Lower 24 lanes wwrite out packed data
-        int laneFrom = (laneId * 8) / 5;
-
-        v = valid ? v : 0;
-        v &= 0x1f; // ensure we have only 6 bits
-
-        uint8_t lo = (uint8_t)SHFL_SYNC((unsigned int)v, laneFrom, kWarpSize);
-        uint8_t hi =
-                (uint8_t)SHFL_SYNC((unsigned int)v, laneFrom + 1, kWarpSize);
-        uint8_t hi2 =
-                (uint8_t)SHFL_SYNC((unsigned int)v, laneFrom + 2, kWarpSize);
-
-        uint8_t vOut = 0;
-
-        // lsb     ...    msb
-        // 0: 0 0 0 0 0 1 1 1
-        // 1: 1 1 2 2 2 2 2 3
-        // 2: 3 3 3 3 4 4 4 4
-        // 3: 4 5 5 5 5 5 6 6
-        // 4: 6 6 6 7 7 7 7 7
-        switch (laneId % 5) {
-            case 0:
-                // 5 msbs of lower as vOut lsbs
-                // 3 lsbs of upper as vOut msbs
-                vOut = (lo & 0x1f) | (hi << 5);
-                break;
-            case 1:
-                // 2 msbs of lower as vOut lsbs
-                // 5 lsbs of upper as vOut msbs
-                // 1 lsbs of upper2 as vOut msb
-                vOut = (lo >> 3) | (hi << 2) | (hi2 << 7);
-                break;
-            case 2:
-                // 4 msbs of lower as vOut lsbs
-                // 4 lsbs of upper as vOut msbs
-                vOut = (lo >> 1) | (hi << 4);
-                break;
-            case 3:
-                // 1 msbs of lower as vOut lsbs
-                // 5 lsbs of upper as vOut msbs
-                // 2 lsbs of upper2 as vOut msb
-                vOut = (lo >> 4) | (hi << 1) | (hi2 << 6);
-                break;
-            case 4:
-                // 3 msbs of lower as vOut lsbs
-                // 5 lsbs of upper as vOut msbs
-                vOut = (lo >> 2) | (hi << 3);
-                break;
-        }
-
-        if (laneId < 20) {
-            // There could be prior data
-            out[laneId] |= vOut;
-        }
-    }
-
-    static inline __device__ uint8_t read(int laneId, uint8_t* in) {
-        uint8_t v = 0;
-
-        if (laneId < 20) {
-            v = in[laneId];
-        }
-
-        return v;
-    }
-
-    static inline __device__ uint8_t postRead(int laneId, uint8_t v) {
-        int laneFrom = (laneId * 5) / 8;
-
-        auto vLower = SHFL_SYNC((unsigned int)v, laneFrom, kWarpSize);
-        auto vUpper = SHFL_SYNC((unsigned int)v, laneFrom + 1, kWarpSize);
-        auto vConcat = (vUpper << 8) | vLower;
-
-        // Now, this is weird. Each lane reads two uint8, but we wish to use the
-        // bfe.u32 instruction to read a 5 bit value from the concatenated
-        // uint32. The offset in which we wish to read in the concatenated word
-        // is the following:
-        //
-        // 0: 0, 1: offset 0 size 5
-        // 1: 0, 1: offset 5 size 5
-        // 2: 1, 2: offset 2 size 5
-        // 3: 1, 2: offset 7 size 5
-        // 4: 2, 3: offset 4 size 5
-        // 5: 3, 4: offset 1 size 5
-        // 6: 3, 4: offset 6 size 5
-        // 7: 4, 5: offset 3 size 5
-        //
-        // The offsets are the following (concatenated together):
-        // 0x36147250
-        // We can thus use bfe.u32 as a lookup table for the above sequence.
-        unsigned int pos;
-        GET_BITFIELD_U32(pos, 0x36147250, (laneId & 0x7) * 4, 4);
-
-        unsigned int out;
-        GET_BITFIELD_U32(out, vConcat, pos, 5);
-
-        return out;
-    }
-};
-
-// Read/write 4 bit fields, packed across the warp into 16 bytes
-template <>
-struct WarpPackedBits<uint8_t, 4> {
-    static __device__ void write(
-            int laneId,
-            uint8_t v,
-            bool valid,
-            uint8_t* out) {
-        // Lower 16 lanes write out packed data
-        int laneFrom = laneId * 2;
-
-        v = valid ? v : 0;
-
-        uint8_t vLower =
-                (uint8_t)SHFL_SYNC((unsigned int)v, laneFrom, kWarpSize);
-        uint8_t vUpper =
-                (uint8_t)SHFL_SYNC((unsigned int)v, laneFrom + 1, kWarpSize);
-
-        uint8_t vOut = (vLower & 0xf) | (vUpper << 4);
-
-        if (laneId < 16) {
-            // There could be prior data
-            out[laneId] |= vOut;
-        }
-    }
-
-    static inline __device__ uint8_t read(int laneId, uint8_t* in) {
-        uint8_t v = 0;
-
-        if (laneId < 16) {
-            v = in[laneId];
-        }
-
-        return v;
-    }
-
-    static inline __device__ uint8_t postRead(int laneId, uint8_t v) {
-        int laneFrom = laneId / 2;
-        auto v2 = shfl((unsigned int)v, laneFrom);
-        return getBitfield(v2, (laneId & 0x1) * 4, 4);
-    }
-};
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/WarpSelectFloat.cu b/faiss/gpu_cuda/utils/WarpSelectFloat.cu
deleted file mode 100644
index b59e5b0f645aa825f293e0da45134742e4a385d5..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/WarpSelectFloat.cu
+++ /dev/null
@@ -1,99 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/warpselect/WarpSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-// warp Q to thread Q:
-// 1, 1
-// 32, 2
-// 64, 3
-// 128, 3
-// 256, 4
-// 512, 8
-// 1024, 8
-// 2048, 8
-
-WARP_SELECT_DECL(float, true, 1);
-WARP_SELECT_DECL(float, true, 32);
-WARP_SELECT_DECL(float, true, 64);
-WARP_SELECT_DECL(float, true, 128);
-WARP_SELECT_DECL(float, true, 256);
-WARP_SELECT_DECL(float, true, 512);
-WARP_SELECT_DECL(float, true, 1024);
-#if GPU_MAX_SELECTION_K >= 2048
-WARP_SELECT_DECL(float, true, 2048);
-#endif
-
-WARP_SELECT_DECL(float, false, 1);
-WARP_SELECT_DECL(float, false, 32);
-WARP_SELECT_DECL(float, false, 64);
-WARP_SELECT_DECL(float, false, 128);
-WARP_SELECT_DECL(float, false, 256);
-WARP_SELECT_DECL(float, false, 512);
-WARP_SELECT_DECL(float, false, 1024);
-#if GPU_MAX_SELECTION_K >= 2048
-WARP_SELECT_DECL(float, false, 2048);
-#endif
-
-void runWarpSelect(
-        Tensor<float, 2, true>& in,
-        Tensor<float, 2, true>& outK,
-        Tensor<int, 2, true>& outV,
-        bool dir,
-        int k,
-        cudaStream_t stream) {
-    FAISS_ASSERT(k <= 2048);
-
-    if (dir) {
-        if (k == 1) {
-            WARP_SELECT_CALL(float, true, 1);
-        } else if (k <= 32) {
-            WARP_SELECT_CALL(float, true, 32);
-        } else if (k <= 64) {
-            WARP_SELECT_CALL(float, true, 64);
-        } else if (k <= 128) {
-            WARP_SELECT_CALL(float, true, 128);
-        } else if (k <= 256) {
-            WARP_SELECT_CALL(float, true, 256);
-        } else if (k <= 512) {
-            WARP_SELECT_CALL(float, true, 512);
-        } else if (k <= 1024) {
-            WARP_SELECT_CALL(float, true, 1024);
-#if GPU_MAX_SELECTION_K >= 2048
-        } else if (k <= 2048) {
-            WARP_SELECT_CALL(float, true, 2048);
-#endif
-        }
-    } else {
-        if (k == 1) {
-            WARP_SELECT_CALL(float, false, 1);
-        } else if (k <= 32) {
-            WARP_SELECT_CALL(float, false, 32);
-        } else if (k <= 64) {
-            WARP_SELECT_CALL(float, false, 64);
-        } else if (k <= 128) {
-            WARP_SELECT_CALL(float, false, 128);
-        } else if (k <= 256) {
-            WARP_SELECT_CALL(float, false, 256);
-        } else if (k <= 512) {
-            WARP_SELECT_CALL(float, false, 512);
-        } else if (k <= 1024) {
-            WARP_SELECT_CALL(float, false, 1024);
-#if GPU_MAX_SELECTION_K >= 2048
-        } else if (k <= 2048) {
-            WARP_SELECT_CALL(float, false, 2048);
-#endif
-        }
-    }
-}
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/WarpSelectKernel.cuh b/faiss/gpu_cuda/utils/WarpSelectKernel.cuh
deleted file mode 100644
index 7f7e68b4e313ad3f22f0638cb3c80c3a2b160c4f..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/WarpSelectKernel.cuh
+++ /dev/null
@@ -1,85 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/Select.cuh>
-
-namespace faiss {
-namespace gpu {
-
-template <
-        typename K,
-        typename IndexType,
-        bool Dir,
-        int NumWarpQ,
-        int NumThreadQ,
-        int ThreadsPerBlock>
-__global__ void warpSelect(
-        Tensor<K, 2, true> in,
-        Tensor<K, 2, true> outK,
-        Tensor<IndexType, 2, true> outV,
-        K initK,
-        IndexType initV,
-        int k) {
-    constexpr int kNumWarps = ThreadsPerBlock / kWarpSize;
-
-    WarpSelect<
-            K,
-            IndexType,
-            Dir,
-            Comparator<K>,
-            NumWarpQ,
-            NumThreadQ,
-            ThreadsPerBlock>
-            heap(initK, initV, k);
-
-    int warpId = threadIdx.x / kWarpSize;
-    int row = blockIdx.x * kNumWarps + warpId;
-
-    if (row >= in.getSize(0)) {
-        return;
-    }
-
-    int i = getLaneId();
-    K* inStart = in[row][i].data();
-
-    // Whole warps must participate in the selection
-    int limit = utils::roundDown(in.getSize(1), kWarpSize);
-
-    for (; i < limit; i += kWarpSize) {
-        heap.add(*inStart, (IndexType)i);
-        inStart += kWarpSize;
-    }
-
-    // Handle non-warp multiple remainder
-    if (i < in.getSize(1)) {
-        heap.addThreadQ(*inStart, (IndexType)i);
-    }
-
-    heap.reduce();
-    heap.writeOut(outK[row].data(), outV[row].data(), k);
-}
-
-void runWarpSelect(
-        Tensor<float, 2, true>& in,
-        Tensor<float, 2, true>& outKeys,
-        Tensor<int, 2, true>& outIndices,
-        bool dir,
-        int k,
-        cudaStream_t stream);
-
-void runWarpSelect(
-        Tensor<half, 2, true>& in,
-        Tensor<half, 2, true>& outKeys,
-        Tensor<int, 2, true>& outIndices,
-        bool dir,
-        int k,
-        cudaStream_t stream);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/WarpShuffles.cuh b/faiss/gpu_cuda/utils/WarpShuffles.cuh
deleted file mode 100644
index 23dbb437fa0bb4c50d678250ac254d0bf2141d03..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/WarpShuffles.cuh
+++ /dev/null
@@ -1,127 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cuda.h>
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-
-namespace faiss {
-namespace gpu {
-
-// defines to simplify the SASS assembly structure file/line in the profiler
-#if CUDA_VERSION >= 9000
-#define SHFL_SYNC(VAL, SRC_LANE, WIDTH) \
-    __shfl_sync(0xffffffff, VAL, SRC_LANE, WIDTH)
-#else
-#define SHFL_SYNC(VAL, SRC_LANE, WIDTH) __shfl(VAL, SRC_LANE, WIDTH)
-#endif
-
-template <typename T>
-inline __device__ T shfl(const T val, int srcLane, int width = kWarpSize) {
-#if CUDA_VERSION >= 9000
-    return __shfl_sync(0xffffffff, val, srcLane, width);
-#else
-    return __shfl(val, srcLane, width);
-#endif
-}
-
-// CUDA SDK does not provide specializations for T*
-template <typename T>
-inline __device__ T* shfl(T* const val, int srcLane, int width = kWarpSize) {
-    static_assert(sizeof(T*) == sizeof(long long), "pointer size");
-    long long v = (long long)val;
-
-    return (T*)shfl(v, srcLane, width);
-}
-
-template <typename T>
-inline __device__ T
-shfl_up(const T val, unsigned int delta, int width = kWarpSize) {
-#if CUDA_VERSION >= 9000
-    return __shfl_up_sync(0xffffffff, val, delta, width);
-#else
-    return __shfl_up(val, delta, width);
-#endif
-}
-
-// CUDA SDK does not provide specializations for T*
-template <typename T>
-inline __device__ T* shfl_up(
-        T* const val,
-        unsigned int delta,
-        int width = kWarpSize) {
-    static_assert(sizeof(T*) == sizeof(long long), "pointer size");
-    long long v = (long long)val;
-
-    return (T*)shfl_up(v, delta, width);
-}
-
-template <typename T>
-inline __device__ T
-shfl_down(const T val, unsigned int delta, int width = kWarpSize) {
-#if CUDA_VERSION >= 9000
-    return __shfl_down_sync(0xffffffff, val, delta, width);
-#else
-    return __shfl_down(val, delta, width);
-#endif
-}
-
-// CUDA SDK does not provide specializations for T*
-template <typename T>
-inline __device__ T* shfl_down(
-        T* const val,
-        unsigned int delta,
-        int width = kWarpSize) {
-    static_assert(sizeof(T*) == sizeof(long long), "pointer size");
-    long long v = (long long)val;
-    return (T*)shfl_down(v, delta, width);
-}
-
-template <typename T>
-inline __device__ T shfl_xor(const T val, int laneMask, int width = kWarpSize) {
-#if CUDA_VERSION >= 9000
-    return __shfl_xor_sync(0xffffffff, val, laneMask, width);
-#else
-    return __shfl_xor(val, laneMask, width);
-#endif
-}
-
-// CUDA SDK does not provide specializations for T*
-template <typename T>
-inline __device__ T* shfl_xor(
-        T* const val,
-        int laneMask,
-        int width = kWarpSize) {
-    static_assert(sizeof(T*) == sizeof(long long), "pointer size");
-    long long v = (long long)val;
-    return (T*)shfl_xor(v, laneMask, width);
-}
-
-// CUDA 9.0+ has half shuffle
-#if CUDA_VERSION < 9000
-inline __device__ half shfl(half v, int srcLane, int width = kWarpSize) {
-    unsigned int vu = v.x;
-    vu = __shfl(vu, srcLane, width);
-
-    half h;
-    h.x = (unsigned short)vu;
-    return h;
-}
-
-inline __device__ half shfl_xor(half v, int laneMask, int width = kWarpSize) {
-    unsigned int vu = v.x;
-    vu = __shfl_xor(vu, laneMask, width);
-
-    half h;
-    h.x = (unsigned short)vu;
-    return h;
-}
-#endif // CUDA_VERSION
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat1.cu b/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat1.cu
deleted file mode 100644
index 46202d891b6818393ec24e24e5b1cf656d73ddcc..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat1.cu
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/blockselect/BlockSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-BLOCK_SELECT_IMPL(float, true, 1, 1);
-BLOCK_SELECT_IMPL(float, false, 1, 1);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat128.cu b/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat128.cu
deleted file mode 100644
index 85a400d1049d92ccf56cdeb5a376f9d180c1fa5f..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat128.cu
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/blockselect/BlockSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-BLOCK_SELECT_IMPL(float, true, 128, 3);
-BLOCK_SELECT_IMPL(float, false, 128, 3);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat256.cu b/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat256.cu
deleted file mode 100644
index 7fe2a9dd69cf3f51c92c2808e92c4d544993ec6e..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat256.cu
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/blockselect/BlockSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-BLOCK_SELECT_IMPL(float, true, 256, 4);
-BLOCK_SELECT_IMPL(float, false, 256, 4);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat32.cu b/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat32.cu
deleted file mode 100644
index 71c0c4e5718303be0619ee6670f4aa88ee6936ea..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat32.cu
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/blockselect/BlockSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-BLOCK_SELECT_IMPL(float, true, 32, 2);
-BLOCK_SELECT_IMPL(float, false, 32, 2);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat64.cu b/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat64.cu
deleted file mode 100644
index 8f774ca8fc4739312de7c58bc8ddb5757d2a2bfc..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloat64.cu
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/blockselect/BlockSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-BLOCK_SELECT_IMPL(float, true, 64, 3);
-BLOCK_SELECT_IMPL(float, false, 64, 3);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatF1024.cu b/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatF1024.cu
deleted file mode 100644
index 1a4eed223b5a87695fee0c609a2069898e30c30b..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatF1024.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/blockselect/BlockSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-BLOCK_SELECT_IMPL(float, false, 1024, 8);
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatF2048.cu b/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatF2048.cu
deleted file mode 100644
index 510adcefdbd3c81c9ba9a62b0474f52a6a73bf8b..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatF2048.cu
+++ /dev/null
@@ -1,19 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/blockselect/BlockSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-#if GPU_MAX_SELECTION_K >= 2048
-BLOCK_SELECT_IMPL(float, false, 2048, 8);
-#endif
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatF512.cu b/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatF512.cu
deleted file mode 100644
index f52dffd0ef5a74b27cd26ce3983a1e2ac3861a1a..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatF512.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/blockselect/BlockSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-BLOCK_SELECT_IMPL(float, false, 512, 8);
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatT1024.cu b/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatT1024.cu
deleted file mode 100644
index da22fcf621b812c23db4a37ea3ad9b5898f09cf3..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatT1024.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/blockselect/BlockSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-BLOCK_SELECT_IMPL(float, true, 1024, 8);
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatT2048.cu b/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatT2048.cu
deleted file mode 100644
index 09d6a049f3c4bdfd9305e20c3d638978fe06383b..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatT2048.cu
+++ /dev/null
@@ -1,19 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/blockselect/BlockSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-#if GPU_MAX_SELECTION_K >= 2048
-BLOCK_SELECT_IMPL(float, true, 2048, 8);
-#endif
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatT512.cu b/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatT512.cu
deleted file mode 100644
index 2f08019125538bbf158a816748249352f62451b2..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/blockselect/BlockSelectFloatT512.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/blockselect/BlockSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-BLOCK_SELECT_IMPL(float, true, 512, 8);
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/blockselect/BlockSelectImpl.cuh b/faiss/gpu_cuda/utils/blockselect/BlockSelectImpl.cuh
deleted file mode 100644
index 6c4379a3bd7cdfda2dc9802d9fcae3b4745ddae7..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/blockselect/BlockSelectImpl.cuh
+++ /dev/null
@@ -1,98 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <faiss/gpu/utils/BlockSelectKernel.cuh>
-#include <faiss/gpu/utils/Limits.cuh>
-
-#define BLOCK_SELECT_DECL(TYPE, DIR, WARP_Q)                     \
-    extern void runBlockSelect_##TYPE##_##DIR##_##WARP_Q##_(     \
-            Tensor<TYPE, 2, true>& in,                           \
-            Tensor<TYPE, 2, true>& outK,                         \
-            Tensor<int, 2, true>& outV,                          \
-            bool dir,                                            \
-            int k,                                               \
-            cudaStream_t stream);                                \
-                                                                 \
-    extern void runBlockSelectPair_##TYPE##_##DIR##_##WARP_Q##_( \
-            Tensor<TYPE, 2, true>& inK,                          \
-            Tensor<int, 2, true>& inV,                           \
-            Tensor<TYPE, 2, true>& outK,                         \
-            Tensor<int, 2, true>& outV,                          \
-            bool dir,                                            \
-            int k,                                               \
-            cudaStream_t stream)
-
-#define BLOCK_SELECT_IMPL(TYPE, DIR, WARP_Q, THREAD_Q)                         \
-    void runBlockSelect_##TYPE##_##DIR##_##WARP_Q##_(                          \
-            Tensor<TYPE, 2, true>& in,                                         \
-            Tensor<TYPE, 2, true>& outK,                                       \
-            Tensor<int, 2, true>& outV,                                        \
-            bool dir,                                                          \
-            int k,                                                             \
-            cudaStream_t stream) {                                             \
-        FAISS_ASSERT(in.getSize(0) == outK.getSize(0));                        \
-        FAISS_ASSERT(in.getSize(0) == outV.getSize(0));                        \
-        FAISS_ASSERT(outK.getSize(1) == k);                                    \
-        FAISS_ASSERT(outV.getSize(1) == k);                                    \
-                                                                               \
-        auto grid = dim3(in.getSize(0));                                       \
-                                                                               \
-        constexpr int kBlockSelectNumThreads = (WARP_Q <= 1024) ? 128 : 64;    \
-        auto block = dim3(kBlockSelectNumThreads);                             \
-                                                                               \
-        FAISS_ASSERT(k <= WARP_Q);                                             \
-        FAISS_ASSERT(dir == DIR);                                              \
-                                                                               \
-        auto kInit = dir ? Limits<TYPE>::getMin() : Limits<TYPE>::getMax();    \
-        auto vInit = -1;                                                       \
-                                                                               \
-        blockSelect<TYPE, int, DIR, WARP_Q, THREAD_Q, kBlockSelectNumThreads>  \
-                <<<grid, block, 0, stream>>>(in, outK, outV, kInit, vInit, k); \
-        CUDA_TEST_ERROR();                                                     \
-    }                                                                          \
-                                                                               \
-    void runBlockSelectPair_##TYPE##_##DIR##_##WARP_Q##_(                      \
-            Tensor<TYPE, 2, true>& inK,                                        \
-            Tensor<int, 2, true>& inV,                                         \
-            Tensor<TYPE, 2, true>& outK,                                       \
-            Tensor<int, 2, true>& outV,                                        \
-            bool dir,                                                          \
-            int k,                                                             \
-            cudaStream_t stream) {                                             \
-        FAISS_ASSERT(inK.isSameSize(inV));                                     \
-        FAISS_ASSERT(outK.isSameSize(outV));                                   \
-                                                                               \
-        auto grid = dim3(inK.getSize(0));                                      \
-                                                                               \
-        constexpr int kBlockSelectNumThreads = (WARP_Q <= 1024) ? 128 : 64;    \
-        auto block = dim3(kBlockSelectNumThreads);                             \
-                                                                               \
-        FAISS_ASSERT(k <= WARP_Q);                                             \
-        FAISS_ASSERT(dir == DIR);                                              \
-                                                                               \
-        auto kInit = dir ? Limits<TYPE>::getMin() : Limits<TYPE>::getMax();    \
-        auto vInit = -1;                                                       \
-                                                                               \
-        blockSelectPair<                                                       \
-                TYPE,                                                          \
-                int,                                                           \
-                DIR,                                                           \
-                WARP_Q,                                                        \
-                THREAD_Q,                                                      \
-                kBlockSelectNumThreads><<<grid, block, 0, stream>>>(           \
-                inK, inV, outK, outV, kInit, vInit, k);                        \
-        CUDA_TEST_ERROR();                                                     \
-    }
-
-#define BLOCK_SELECT_CALL(TYPE, DIR, WARP_Q) \
-    runBlockSelect_##TYPE##_##DIR##_##WARP_Q##_(in, outK, outV, dir, k, stream)
-
-#define BLOCK_SELECT_PAIR_CALL(TYPE, DIR, WARP_Q)    \
-    runBlockSelectPair_##TYPE##_##DIR##_##WARP_Q##_( \
-            inK, inV, outK, outV, dir, k, stream)
diff --git a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat1.cu b/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat1.cu
deleted file mode 100644
index 08f597e7dffc230c7e20a8f1ae141513b27644cd..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat1.cu
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/warpselect/WarpSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-WARP_SELECT_IMPL(float, true, 1, 1);
-WARP_SELECT_IMPL(float, false, 1, 1);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat128.cu b/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat128.cu
deleted file mode 100644
index ef43dc21ff41c83bed5b2b47f35cdd2b4eedc61f..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat128.cu
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/warpselect/WarpSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-WARP_SELECT_IMPL(float, true, 128, 3);
-WARP_SELECT_IMPL(float, false, 128, 3);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat256.cu b/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat256.cu
deleted file mode 100644
index c74563514a08e3121811a819e0d104739ba42057..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat256.cu
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/warpselect/WarpSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-WARP_SELECT_IMPL(float, true, 256, 4);
-WARP_SELECT_IMPL(float, false, 256, 4);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat32.cu b/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat32.cu
deleted file mode 100644
index 183ae49cf6d43b011207b603d5259db9cfdfe95c..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat32.cu
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/warpselect/WarpSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-WARP_SELECT_IMPL(float, true, 32, 2);
-WARP_SELECT_IMPL(float, false, 32, 2);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat64.cu b/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat64.cu
deleted file mode 100644
index 300993449c922f2ea9c073e86aab92e34654ce2a..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloat64.cu
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/warpselect/WarpSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-WARP_SELECT_IMPL(float, true, 64, 3);
-WARP_SELECT_IMPL(float, false, 64, 3);
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatF1024.cu b/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatF1024.cu
deleted file mode 100644
index 2a671af4be13583d7f394f87526d5937a72d8930..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatF1024.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/warpselect/WarpSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-WARP_SELECT_IMPL(float, false, 1024, 8);
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatF2048.cu b/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatF2048.cu
deleted file mode 100644
index 0bef8b2119cb991dfc961c4982a03916abf25b8d..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatF2048.cu
+++ /dev/null
@@ -1,19 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/warpselect/WarpSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-#if GPU_MAX_SELECTION_K >= 2048
-WARP_SELECT_IMPL(float, false, 2048, 8);
-#endif
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatF512.cu b/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatF512.cu
deleted file mode 100644
index b8f2f1b75939494815ad50711d6c17f59d21709e..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatF512.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/warpselect/WarpSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-WARP_SELECT_IMPL(float, false, 512, 8);
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatT1024.cu b/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatT1024.cu
deleted file mode 100644
index a9d5b3456f91a47b562f7f34c120470e0338ea9f..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatT1024.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/warpselect/WarpSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-WARP_SELECT_IMPL(float, true, 1024, 8);
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatT2048.cu b/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatT2048.cu
deleted file mode 100644
index 13621aada117a2e3926a113977a56e8c5c8217a9..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatT2048.cu
+++ /dev/null
@@ -1,19 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/DeviceDefs.cuh>
-#include <faiss/gpu/utils/warpselect/WarpSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-#if GPU_MAX_SELECTION_K >= 2048
-WARP_SELECT_IMPL(float, true, 2048, 8);
-#endif
-
-} // namespace gpu
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatT512.cu b/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatT512.cu
deleted file mode 100644
index 00c9878962ee05e0a63d506d71f29f7e81e36d74..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/warpselect/WarpSelectFloatT512.cu
+++ /dev/null
@@ -1,16 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/warpselect/WarpSelectImpl.cuh>
-
-namespace faiss {
-namespace gpu {
-
-WARP_SELECT_IMPL(float, true, 512, 8);
-
-}
-} // namespace faiss
diff --git a/faiss/gpu_cuda/utils/warpselect/WarpSelectImpl.cuh b/faiss/gpu_cuda/utils/warpselect/WarpSelectImpl.cuh
deleted file mode 100644
index e705a52b625c2b57fa3daee53c3a21fb76c6a776..0000000000000000000000000000000000000000
--- a/faiss/gpu_cuda/utils/warpselect/WarpSelectImpl.cuh
+++ /dev/null
@@ -1,45 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <faiss/gpu/utils/Limits.cuh>
-#include <faiss/gpu/utils/WarpSelectKernel.cuh>
-
-#define WARP_SELECT_DECL(TYPE, DIR, WARP_Q)                 \
-    extern void runWarpSelect_##TYPE##_##DIR##_##WARP_Q##_( \
-            Tensor<TYPE, 2, true>& in,                      \
-            Tensor<TYPE, 2, true>& outK,                    \
-            Tensor<int, 2, true>& outV,                     \
-            bool dir,                                       \
-            int k,                                          \
-            cudaStream_t stream)
-
-#define WARP_SELECT_IMPL(TYPE, DIR, WARP_Q, THREAD_Q)                          \
-    void runWarpSelect_##TYPE##_##DIR##_##WARP_Q##_(                           \
-            Tensor<TYPE, 2, true>& in,                                         \
-            Tensor<TYPE, 2, true>& outK,                                       \
-            Tensor<int, 2, true>& outV,                                        \
-            bool dir,                                                          \
-            int k,                                                             \
-            cudaStream_t stream) {                                             \
-        constexpr int kWarpSelectNumThreads = 128;                             \
-        auto grid = dim3(utils::divUp(                                         \
-                in.getSize(0), (kWarpSelectNumThreads / kWarpSize)));          \
-        auto block = dim3(kWarpSelectNumThreads);                              \
-                                                                               \
-        FAISS_ASSERT(k <= WARP_Q);                                             \
-        FAISS_ASSERT(dir == DIR);                                              \
-                                                                               \
-        auto kInit = dir ? Limits<TYPE>::getMin() : Limits<TYPE>::getMax();    \
-        auto vInit = -1;                                                       \
-                                                                               \
-        warpSelect<TYPE, int, DIR, WARP_Q, THREAD_Q, kWarpSelectNumThreads>    \
-                <<<grid, block, 0, stream>>>(in, outK, outV, kInit, vInit, k); \
-        CUDA_TEST_ERROR();                                                     \
-    }
-
-#define WARP_SELECT_CALL(TYPE, DIR, WARP_Q) \
-    runWarpSelect_##TYPE##_##DIR##_##WARP_Q##_(in, outK, outV, dir, k, stream)
diff --git a/faiss/python/swigfaiss.swig b/faiss/python/swigfaiss.swig
index 5c32e46f1e4c262b9060ac20d30d46abc257ed24..3756d63a5097b3a46baddc839457f665336f82ba 100644
--- a/faiss/python/swigfaiss.swig
+++ b/faiss/python/swigfaiss.swig
@@ -325,16 +325,16 @@ void gpu_sync_all_devices()
 %include  <faiss/gpu/GpuResources.h>
 %include  <faiss/gpu/StandardGpuResources.h>
 
-typedef CUstream_st* cudaStream_t;
+typedef ihipStream_t* hipStream_t;
 
 %inline %{
 
-// interop between pytorch exposed cudaStream_t and faiss
-cudaStream_t cast_integer_to_cudastream_t(int64_t x) {
-  return (cudaStream_t) x;
+// interop between pytorch exposed hipStream_t and faiss
+hipStream_t cast_integer_to_cudastream_t(int64_t x) {
+  return (hipStream_t) x;
 }
 
-int64_t cast_cudastream_t_to_integer(cudaStream_t x) {
+int64_t cast_cudastream_t_to_integer(hipStream_t x) {
   return (int64_t) x;
 }
 
diff --git a/faiss/python/swigfaiss.swig.bak b/faiss/python/swigfaiss.swig.bak
new file mode 100644
index 0000000000000000000000000000000000000000..5c32e46f1e4c262b9060ac20d30d46abc257ed24
--- /dev/null
+++ b/faiss/python/swigfaiss.swig.bak
@@ -0,0 +1,1011 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+// -*- C++ -*-
+
+// This file describes the C++-scripting language bridge for Python (and formerly Lua).
+// It contains mainly includes and a few macros. There are
+// 2 preprocessor macros of interest:
+
+// SWIGPYTHON: Python-specific code
+// GPU_WRAPPER: also compile interfaces for GPU.
+
+%module swigfaiss;
+
+// NOTE: While parsing the headers to generate the interface, SWIG does not know
+// about `_MSC_VER`.
+// TODO: Remove the need for this hack.
+#ifdef SWIGWIN
+#define _MSC_VER
+%include <windows.i>
+#endif // SWIGWIN
+
+// fbode SWIG fails on warnings, so make them non fatal
+#pragma SWIG nowarn=321
+#pragma SWIG nowarn=403
+#pragma SWIG nowarn=325
+#pragma SWIG nowarn=389
+#pragma SWIG nowarn=341
+#pragma SWIG nowarn=512
+#pragma SWIG nowarn=362
+
+%include <stdint.i>
+
+typedef uint64_t size_t;
+
+
+#define __restrict
+
+
+/*******************************************************************
+ * Copied verbatim to wrapper. Contains the C++-visible includes, and
+ * the language includes for their respective matrix libraries.
+ *******************************************************************/
+
+%{
+
+
+#include <stdint.h>
+#include <omp.h>
+
+
+
+#ifdef SWIGPYTHON
+
+#undef popcount64
+
+#define SWIG_FILE_WITH_INIT
+#define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION
+#include <numpy/arrayobject.h>
+
+#endif
+
+
+#include <faiss/IndexFlat.h>
+#include <faiss/VectorTransform.h>
+#include <faiss/IndexPreTransform.h>
+#include <faiss/IndexLSH.h>
+#include <faiss/IndexPQ.h>
+#include <faiss/IndexAdditiveQuantizer.h>
+#include <faiss/IndexIVF.h>
+#include <faiss/IndexIVFPQ.h>
+#include <faiss/Index2Layer.h>
+#include <faiss/IndexIVFPQR.h>
+#include <faiss/IndexIVFFlat.h>
+
+#include <faiss/IndexPQFastScan.h>
+#include <faiss/IndexIVFPQFastScan.h>
+#include <faiss/utils/quantize_lut.h>
+
+#include <faiss/IndexScalarQuantizer.h>
+#include <faiss/IndexIVFAdditiveQuantizer.h>
+#include <faiss/IndexIVFSpectralHash.h>
+#include <faiss/impl/ThreadedIndex.h>
+#include <faiss/IndexShards.h>
+#include <faiss/IndexReplicas.h>
+#include <faiss/impl/HNSW.h>
+#include <faiss/IndexHNSW.h>
+
+#include <faiss/impl/kmeans1d.h>
+
+#include <faiss/impl/NNDescent.h>
+#include <faiss/IndexNNDescent.h>
+
+#include <faiss/impl/NSG.h>
+#include <faiss/IndexNSG.h>
+
+#include <faiss/MetaIndexes.h>
+#include <faiss/IndexRefine.h>
+
+#include <faiss/impl/FaissAssert.h>
+
+#include <faiss/IndexBinaryFlat.h>
+#include <faiss/IndexBinaryIVF.h>
+#include <faiss/IndexBinaryFromFloat.h>
+#include <faiss/IndexBinaryHNSW.h>
+#include <faiss/IndexBinaryHash.h>
+
+#include <faiss/impl/io.h>
+#include <faiss/index_io.h>
+#include <faiss/clone_index.h>
+
+#include <faiss/IVFlib.h>
+#include <faiss/utils/utils.h>
+#include <faiss/utils/distances.h>
+#include <faiss/utils/extra_distances.h>
+#include <faiss/utils/random.h>
+#include <faiss/utils/Heap.h>
+#include <faiss/utils/AlignedTable.h>
+#include <faiss/utils/partitioning.h>
+#include <faiss/impl/AuxIndexStructures.h>
+#include <faiss/impl/AdditiveQuantizer.h>
+#include <faiss/impl/ResidualQuantizer.h>
+#include <faiss/impl/LocalSearchQuantizer.h>
+
+#include <faiss/invlists/BlockInvertedLists.h>
+
+#ifndef _MSC_VER
+#include <faiss/invlists/OnDiskInvertedLists.h>
+#endif // !_MSC_VER
+
+#include <faiss/Clustering.h>
+
+#include <faiss/utils/hamming.h>
+
+#include <faiss/AutoTune.h>
+#include <faiss/MatrixStats.h>
+#include <faiss/index_factory.h>
+
+#include <faiss/impl/lattice_Zn.h>
+#include <faiss/IndexLattice.h>
+
+
+%}
+
+/********************************************************
+ * GIL manipulation and exception handling
+ ********************************************************/
+
+#ifdef SWIGPYTHON
+// %catches(faiss::FaissException);
+
+
+// Python-specific: release GIL by default for all functions
+%exception {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+        $action
+    } catch(faiss::FaissException & e) {
+        PyEval_RestoreThread(_save);
+
+        if (PyErr_Occurred()) {
+            // some previous code already set the error type.
+        } else {
+            PyErr_SetString(PyExc_RuntimeError, e.what());
+        }
+        SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+        PyEval_RestoreThread(_save);
+        PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+        SWIG_fail;
+    } catch(const std::exception& ex) {
+        PyEval_RestoreThread(_save);
+        std::string what = std::string("C++ exception ") + ex.what();
+        PyErr_SetString(PyExc_RuntimeError, what.c_str());
+        SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+}
+
+#endif
+
+
+/*******************************************************************
+ * Types of vectors we want to manipulate at the scripting language
+ * level.
+ *******************************************************************/
+
+// simplified interface for vector
+namespace std {
+
+    template<class T>
+    class vector {
+    public:
+        vector();
+        void push_back(T);
+        void clear();
+        T * data();
+        size_t size();
+        T at (size_t n) const;
+        T & operator [] (size_t n);
+        void resize (size_t n);
+
+        void swap (vector<T> & other);
+    };
+};
+
+%include <std_string.i>
+%include <std_pair.i>
+%include <std_map.i>
+%include <std_shared_ptr.i>
+
+// primitive array types
+%template(Float32Vector) std::vector<float>;
+%template(Float64Vector) std::vector<double>;
+%template(Int8Vector) std::vector<int8_t>;
+%template(Int16Vector) std::vector<int16_t>;
+%template(Int32Vector) std::vector<int32_t>;
+%template(Int64Vector) std::vector<int64_t>;
+%template(UInt8Vector) std::vector<uint8_t>;
+%template(UInt16Vector) std::vector<uint16_t>;
+%template(UInt32Vector) std::vector<uint32_t>;
+%template(UInt64Vector) std::vector<uint64_t>;
+
+%template(Float32VectorVector) std::vector<std::vector<float> >;
+%template(UInt8VectorVector) std::vector<std::vector<uint8_t> >;
+%template(Int32VectorVector) std::vector<std::vector<int32_t> >;
+%template(Int64VectorVector) std::vector<std::vector<int64_t> >;
+%template(VectorTransformVector) std::vector<faiss::VectorTransform*>;
+%template(OperatingPointVector) std::vector<faiss::OperatingPoint>;
+%template(InvertedListsPtrVector) std::vector<faiss::InvertedLists*>;
+%template(RepeatVector) std::vector<faiss::Repeat>;
+%template(ClusteringIterationStatsVector) std::vector<faiss::ClusteringIterationStats>;
+
+#ifndef SWIGWIN
+%template(OnDiskOneListVector) std::vector<faiss::OnDiskOneList>;
+#endif // !SWIGWIN
+
+#ifdef GPU_WRAPPER
+%template(GpuResourcesVector) std::vector<faiss::gpu::GpuResourcesProvider*>;
+#endif
+
+// produces an error on the Mac
+%ignore faiss::hamming;
+
+/*******************************************************************
+ * Parse headers
+ *******************************************************************/
+
+%include <faiss/impl/platform_macros.h>
+
+%ignore *::cmp;
+
+%include <faiss/utils/ordered_key_value.h>
+%include <faiss/utils/Heap.h>
+
+// this ignore seems to be ignored, so disable W362 above
+%ignore faiss::AlignedTable::operator=;
+
+%include <faiss/utils/AlignedTable.h>
+%include <faiss/utils/partitioning.h>
+%include <faiss/utils/hamming.h>
+
+int get_num_gpus();
+void gpu_profiler_start();
+void gpu_profiler_stop();
+void gpu_sync_all_devices();
+
+#ifdef GPU_WRAPPER
+
+%shared_ptr(faiss::gpu::GpuResources);
+%shared_ptr(faiss::gpu::StandardGpuResourcesImpl);
+
+%{
+
+#include <faiss/gpu/StandardGpuResources.h>
+#include <faiss/gpu/GpuIndicesOptions.h>
+#include <faiss/gpu/GpuClonerOptions.h>
+#include <faiss/gpu/GpuIndex.h>
+#include <faiss/gpu/GpuIndexFlat.h>
+#include <faiss/gpu/GpuIndexIVF.h>
+#include <faiss/gpu/GpuIndexIVFPQ.h>
+#include <faiss/gpu/GpuIndexIVFFlat.h>
+#include <faiss/gpu/GpuIndexIVFScalarQuantizer.h>
+#include <faiss/gpu/GpuIndexBinaryFlat.h>
+#include <faiss/gpu/GpuAutoTune.h>
+#include <faiss/gpu/GpuCloner.h>
+#include <faiss/gpu/GpuDistance.h>
+#include <faiss/gpu/GpuIcmEncoder.h>
+
+int get_num_gpus()
+{
+    return faiss::gpu::getNumDevices();
+}
+
+void gpu_profiler_start()
+{
+    return faiss::gpu::profilerStart();
+}
+
+void gpu_profiler_stop()
+{
+    return faiss::gpu::profilerStop();
+}
+
+void gpu_sync_all_devices()
+{
+    return faiss::gpu::synchronizeAllDevices();
+}
+
+%}
+
+%template() std::pair<int, uint64_t>;
+%template() std::map<std::string, std::pair<int, uint64_t> >;
+%template() std::map<int, std::map<std::string, std::pair<int, uint64_t> > >;
+
+// causes weird wrapper bug
+%ignore *::allocMemoryHandle;
+%ignore faiss::gpu::GpuMemoryReservation;
+%ignore faiss::gpu::GpuMemoryReservation::operator=(GpuMemoryReservation&&);
+
+%include  <faiss/gpu/GpuResources.h>
+%include  <faiss/gpu/StandardGpuResources.h>
+
+typedef CUstream_st* cudaStream_t;
+
+%inline %{
+
+// interop between pytorch exposed cudaStream_t and faiss
+cudaStream_t cast_integer_to_cudastream_t(int64_t x) {
+  return (cudaStream_t) x;
+}
+
+int64_t cast_cudastream_t_to_integer(cudaStream_t x) {
+  return (int64_t) x;
+}
+
+%}
+
+#else
+
+%{
+int get_num_gpus()
+{
+    return 0;
+}
+
+void gpu_profiler_start()
+{
+}
+
+void gpu_profiler_stop()
+{
+}
+
+void gpu_sync_all_devices()
+{
+}
+%}
+
+
+#endif
+
+// order matters because includes are not recursive
+
+%include  <faiss/utils/utils.h>
+%include  <faiss/utils/distances.h>
+%include  <faiss/utils/random.h>
+
+%include  <faiss/MetricType.h>
+
+%newobject *::get_distance_computer() const;
+%include  <faiss/Index.h>
+%include  <faiss/IndexFlatCodes.h>
+%include  <faiss/IndexFlat.h>
+%include  <faiss/Clustering.h>
+
+%include  <faiss/utils/extra_distances.h>
+
+%ignore faiss::ProductQuantizer::get_centroids(size_t,size_t) const;
+
+%include  <faiss/impl/ProductQuantizer.h>
+%include  <faiss/impl/AdditiveQuantizer.h>
+%include  <faiss/impl/ResidualQuantizer.h>
+%include  <faiss/impl/LocalSearchQuantizer.h>
+
+%include  <faiss/VectorTransform.h>
+%include  <faiss/IndexPreTransform.h>
+%include  <faiss/IndexRefine.h>
+%include  <faiss/IndexLSH.h>
+%include  <faiss/impl/PolysemousTraining.h>
+%include  <faiss/IndexPQ.h>
+%include  <faiss/IndexAdditiveQuantizer.h>
+%include  <faiss/impl/io.h>
+
+%include  <faiss/invlists/InvertedLists.h>
+%include  <faiss/invlists/InvertedListsIOHook.h>
+%ignore BlockInvertedListsIOHook;
+%include  <faiss/invlists/BlockInvertedLists.h>
+%include  <faiss/invlists/DirectMap.h>
+%ignore InvertedListScanner;
+%ignore BinaryInvertedListScanner;
+%include  <faiss/IndexIVF.h>
+// NOTE(hoss): SWIG (wrongly) believes the overloaded const version shadows the
+//   non-const one.
+%warnfilter(509) extract_index_ivf;
+%warnfilter(509) try_extract_index_ivf;
+%include  <faiss/IVFlib.h>
+%include  <faiss/impl/ScalarQuantizer.h>
+%include  <faiss/IndexScalarQuantizer.h>
+%include  <faiss/IndexIVFSpectralHash.h>
+%include  <faiss/IndexIVFAdditiveQuantizer.h>
+%include  <faiss/impl/HNSW.h>
+%include  <faiss/IndexHNSW.h>
+
+%include <faiss/impl/kmeans1d.h>
+
+%ignore faiss::nndescent::Nhood::lock;
+%include  <faiss/impl/NNDescent.h>
+%include  <faiss/IndexNNDescent.h>
+
+%include  <faiss/IndexIVFFlat.h>
+%include  <faiss/impl/NSG.h>
+%include  <faiss/IndexNSG.h>
+
+#ifndef SWIGWIN
+%warnfilter(401) faiss::OnDiskInvertedListsIOHook;
+%ignore OnDiskInvertedListsIOHook;
+%include  <faiss/invlists/OnDiskInvertedLists.h>
+#endif // !SWIGWIN
+
+%include  <faiss/impl/lattice_Zn.h>
+%include  <faiss/IndexLattice.h>
+
+%ignore faiss::IndexIVFPQ::alloc_type;
+%include  <faiss/IndexIVFPQ.h>
+%include  <faiss/IndexIVFPQR.h>
+%include  <faiss/Index2Layer.h>
+
+%include  <faiss/IndexPQFastScan.h>
+%include  <faiss/IndexIVFPQFastScan.h>
+%include  <faiss/utils/quantize_lut.h>
+
+%include  <faiss/IndexBinary.h>
+%include  <faiss/IndexBinaryFlat.h>
+%include  <faiss/IndexBinaryIVF.h>
+%include  <faiss/IndexBinaryFromFloat.h>
+%include  <faiss/IndexBinaryHNSW.h>
+%include  <faiss/IndexBinaryHash.h>
+
+%include  <faiss/impl/ThreadedIndex.h>
+%template(ThreadedIndexBase) faiss::ThreadedIndex<faiss::Index>;
+%template(ThreadedIndexBaseBinary) faiss::ThreadedIndex<faiss::IndexBinary>;
+
+%include  <faiss/IndexShards.h>
+%template(IndexShards) faiss::IndexShardsTemplate<faiss::Index>;
+%template(IndexBinaryShards) faiss::IndexShardsTemplate<faiss::IndexBinary>;
+
+%include  <faiss/IndexReplicas.h>
+%template(IndexReplicas) faiss::IndexReplicasTemplate<faiss::Index>;
+%template(IndexBinaryReplicas) faiss::IndexReplicasTemplate<faiss::IndexBinary>;
+
+%include  <faiss/MetaIndexes.h>
+%template(IndexIDMap) faiss::IndexIDMapTemplate<faiss::Index>;
+%template(IndexBinaryIDMap) faiss::IndexIDMapTemplate<faiss::IndexBinary>;
+%template(IndexIDMap2) faiss::IndexIDMap2Template<faiss::Index>;
+%template(IndexBinaryIDMap2) faiss::IndexIDMap2Template<faiss::IndexBinary>;
+
+
+
+%ignore faiss::BufferList::Buffer;
+%ignore faiss::RangeSearchPartialResult::QueryResult;
+%ignore faiss::IDSelectorBatch::set;
+%ignore faiss::IDSelectorBatch::bloom;
+%ignore faiss::InterruptCallback::instance;
+%ignore faiss::InterruptCallback::lock;
+
+%include  <faiss/impl/AuxIndexStructures.h>
+
+
+#ifdef GPU_WRAPPER
+
+// quiet SWIG warnings
+%ignore faiss::gpu::GpuIndexIVF::GpuIndexIVF;
+
+%include  <faiss/gpu/GpuIndicesOptions.h>
+%include  <faiss/gpu/GpuClonerOptions.h>
+%include  <faiss/gpu/GpuIndex.h>
+%include  <faiss/gpu/GpuIndexFlat.h>
+%include  <faiss/gpu/GpuIndexIVF.h>
+%include  <faiss/gpu/GpuIndexIVFPQ.h>
+%include  <faiss/gpu/GpuIndexIVFFlat.h>
+%include  <faiss/gpu/GpuIndexIVFScalarQuantizer.h>
+%include  <faiss/gpu/GpuIndexBinaryFlat.h>
+%include  <faiss/gpu/GpuDistance.h>
+%include  <faiss/gpu/GpuIcmEncoder.h>
+
+
+#endif
+
+
+
+
+
+
+
+
+/*******************************************************************
+ * downcast return of some functions so that the sub-class is used
+ * instead of the generic upper-class.
+ *******************************************************************/
+
+
+#ifdef SWIGPYTHON
+
+%define DOWNCAST(subclass)
+    if (dynamic_cast<faiss::subclass *> ($1)) {
+      $result = SWIG_NewPointerObj($1,SWIGTYPE_p_faiss__ ## subclass,$owner);
+    } else
+%enddef
+
+%define DOWNCAST2(subclass, longname)
+    if (dynamic_cast<faiss::subclass *> ($1)) {
+      $result = SWIG_NewPointerObj($1,SWIGTYPE_p_faiss__ ## longname,$owner);
+    } else
+%enddef
+
+%define DOWNCAST_GPU(subclass)
+    if (dynamic_cast<faiss::gpu::subclass *> ($1)) {
+      $result = SWIG_NewPointerObj($1,SWIGTYPE_p_faiss__gpu__ ## subclass,$owner);
+    } else
+%enddef
+
+#endif
+
+%newobject read_index;
+%newobject read_index_binary;
+%newobject read_VectorTransform;
+%newobject read_ProductQuantizer;
+%newobject clone_index;
+%newobject clone_VectorTransform;
+
+// Subclasses should appear before their parent
+%typemap(out) faiss::Index * {
+    DOWNCAST2 ( IndexIDMap, IndexIDMapTemplateT_faiss__Index_t )
+    DOWNCAST2 ( IndexIDMap2, IndexIDMap2TemplateT_faiss__Index_t )
+    DOWNCAST2 ( IndexShards, IndexShardsTemplateT_faiss__Index_t )
+    DOWNCAST2 ( IndexReplicas, IndexReplicasTemplateT_faiss__Index_t )
+    DOWNCAST ( IndexIVFPQR )
+    DOWNCAST ( IndexIVFPQ )
+    DOWNCAST ( IndexIVFPQFastScan )
+    DOWNCAST ( IndexIVFSpectralHash )
+    DOWNCAST ( IndexIVFScalarQuantizer )
+    DOWNCAST ( IndexIVFResidualQuantizer )
+    DOWNCAST ( IndexIVFLocalSearchQuantizer )
+    DOWNCAST ( IndexIVFFlatDedup )
+    DOWNCAST ( IndexIVFFlat )
+    DOWNCAST ( IndexIVF )
+    DOWNCAST ( IndexFlat )
+    DOWNCAST ( IndexRefineFlat )
+    DOWNCAST ( IndexRefine )
+    DOWNCAST ( IndexPQFastScan )
+    DOWNCAST ( IndexPQ )
+    DOWNCAST ( IndexResidualQuantizer )
+    DOWNCAST ( IndexLocalSearchQuantizer )
+    DOWNCAST ( ResidualCoarseQuantizer )
+    DOWNCAST ( LocalSearchCoarseQuantizer )
+    DOWNCAST ( IndexScalarQuantizer )
+    DOWNCAST ( IndexLSH )
+    DOWNCAST ( IndexLattice )
+    DOWNCAST ( IndexPreTransform )
+    DOWNCAST ( MultiIndexQuantizer )
+    DOWNCAST ( IndexHNSWFlat )
+    DOWNCAST ( IndexHNSWPQ )
+    DOWNCAST ( IndexHNSWSQ )
+    DOWNCAST ( IndexHNSW2Level )
+    DOWNCAST ( IndexNNDescentFlat )
+    DOWNCAST ( IndexNSGFlat )
+    DOWNCAST ( Index2Layer )
+#ifdef GPU_WRAPPER
+    DOWNCAST_GPU ( GpuIndexIVFPQ )
+    DOWNCAST_GPU ( GpuIndexIVFFlat )
+    DOWNCAST_GPU ( GpuIndexIVFScalarQuantizer )
+    DOWNCAST_GPU ( GpuIndexFlat )
+#endif
+    // default for non-recognized classes
+    DOWNCAST ( Index )
+    if ($1 == NULL)
+    {
+#ifdef SWIGPYTHON
+        $result = SWIG_Py_Void();
+#endif
+    } else {
+        assert(false);
+    }
+}
+
+%typemap(out) faiss::IndexBinary * {
+    DOWNCAST2 ( IndexBinaryReplicas, IndexReplicasTemplateT_faiss__IndexBinary_t )
+    DOWNCAST2 ( IndexBinaryIDMap, IndexIDMapTemplateT_faiss__IndexBinary_t )
+    DOWNCAST2 ( IndexBinaryIDMap2, IndexIDMap2TemplateT_faiss__IndexBinary_t )
+    DOWNCAST ( IndexBinaryIVF )
+    DOWNCAST ( IndexBinaryFlat )
+    DOWNCAST ( IndexBinaryFromFloat )
+    DOWNCAST ( IndexBinaryHNSW )
+    DOWNCAST ( IndexBinaryHash )
+    DOWNCAST ( IndexBinaryMultiHash )
+#ifdef GPU_WRAPPER
+    DOWNCAST_GPU ( GpuIndexBinaryFlat )
+#endif
+    // default for non-recognized classes
+    DOWNCAST ( IndexBinary )
+    if ($1 == NULL)
+    {
+#ifdef SWIGPYTHON
+        $result = SWIG_Py_Void();
+#endif
+    } else {
+        assert(false);
+    }
+}
+
+%typemap(out) faiss::VectorTransform * {
+    DOWNCAST (RemapDimensionsTransform)
+    DOWNCAST (OPQMatrix)
+    DOWNCAST (PCAMatrix)
+    DOWNCAST (ITQMatrix)
+    DOWNCAST (RandomRotationMatrix)
+    DOWNCAST (LinearTransform)
+    DOWNCAST (NormalizationTransform)
+    DOWNCAST (CenteringTransform)
+    DOWNCAST (ITQTransform)
+    DOWNCAST (VectorTransform)
+    {
+        assert(false);
+    }
+}
+
+%typemap(out) faiss::InvertedLists * {
+    DOWNCAST (ArrayInvertedLists)
+    DOWNCAST (BlockInvertedLists)
+#ifndef SWIGWIN
+    DOWNCAST (OnDiskInvertedLists)
+#endif // !SWIGWIN
+    DOWNCAST (VStackInvertedLists)
+    DOWNCAST (HStackInvertedLists)
+    DOWNCAST (MaskedInvertedLists)
+    DOWNCAST (InvertedLists)
+    {
+        assert(false);
+    }
+}
+
+// just to downcast pointers that come from elsewhere (eg. direct
+// access to object fields)
+%inline %{
+faiss::Index * downcast_index (faiss::Index *index)
+{
+    return index;
+}
+faiss::VectorTransform * downcast_VectorTransform (faiss::VectorTransform *vt)
+{
+    return vt;
+}
+faiss::IndexBinary * downcast_IndexBinary (faiss::IndexBinary *index)
+{
+    return index;
+}
+faiss::InvertedLists * downcast_InvertedLists (faiss::InvertedLists *il)
+{
+    return il;
+}
+%}
+
+%include  <faiss/index_io.h>
+%include  <faiss/clone_index.h>
+%newobject index_factory;
+%newobject index_binary_factory;
+
+%include  <faiss/AutoTune.h>
+%include  <faiss/index_factory.h>
+%include  <faiss/MatrixStats.h>
+
+
+#ifdef GPU_WRAPPER
+
+%include  <faiss/gpu/GpuAutoTune.h>
+
+%newobject index_gpu_to_cpu;
+%newobject index_cpu_to_gpu;
+%newobject index_cpu_to_gpu_multiple;
+
+%include  <faiss/gpu/GpuCloner.h>
+
+#endif
+
+
+
+/*******************************************************************
+ * Support I/O to arbitrary functions
+ *******************************************************************/
+
+
+#ifdef SWIGPYTHON
+%include <faiss/python/python_callbacks.h>
+
+
+%{
+#include <faiss/python/python_callbacks.h>
+%}
+
+#endif
+
+
+
+// Python-specific: do not release GIL any more, as functions below
+// use the Python/C API
+#ifdef SWIGPYTHON
+%exception;
+#endif
+
+
+
+
+
+/*******************************************************************
+ * Python specific: numpy array <-> C++ pointer interface
+ *******************************************************************/
+
+#ifdef SWIGPYTHON
+
+%{
+PyObject *swig_ptr (PyObject *a)
+{
+
+    if (PyBytes_Check(a)) {
+        return SWIG_NewPointerObj(PyBytes_AsString(a), SWIGTYPE_p_char, 0);
+    }
+    if (PyByteArray_Check(a)) {
+        return SWIG_NewPointerObj(PyByteArray_AsString(a), SWIGTYPE_p_char, 0);
+    }
+    if(!PyArray_Check(a)) {
+        PyErr_SetString(PyExc_ValueError, "input not a numpy array");
+        return NULL;
+    }
+    PyArrayObject *ao = (PyArrayObject *)a;
+
+    if(!PyArray_ISCONTIGUOUS(ao)) {
+        PyErr_SetString(PyExc_ValueError, "array is not C-contiguous");
+        return NULL;
+    }
+    void * data = PyArray_DATA(ao);
+    if(PyArray_TYPE(ao) == NPY_FLOAT32) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_float, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_FLOAT64) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_double, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_FLOAT16) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_short, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_UINT8) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_char, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_INT8) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_char, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_UINT16) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_short, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_INT16) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_short, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_UINT32) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_int, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_INT32) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_int, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_UINT64) {
+#ifdef SWIGWORDSIZE64
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_long, 0);
+#else
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_long_long, 0);
+#endif
+    }
+    if(PyArray_TYPE(ao) == NPY_INT64) {
+#ifdef SWIGWORDSIZE64
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_long, 0);
+#else
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_long_long, 0);
+#endif
+    }
+    PyErr_SetString(PyExc_ValueError, "did not recognize array type");
+    return NULL;
+}
+
+
+struct PythonInterruptCallback: faiss::InterruptCallback {
+
+    bool want_interrupt () override {
+        int err;
+        {
+            PyGILState_STATE gstate;
+            gstate = PyGILState_Ensure();
+            err = PyErr_CheckSignals();
+            PyGILState_Release(gstate);
+        }
+        return err == -1;
+    }
+
+};
+
+
+%}
+
+
+%init %{
+    /* needed, else crash at runtime */
+    import_array();
+
+    faiss::InterruptCallback::instance.reset(new PythonInterruptCallback());
+
+%}
+
+// return a pointer usable as input for functions that expect pointers
+PyObject *swig_ptr (PyObject *a);
+
+%define REV_SWIG_PTR(ctype, numpytype)
+
+%{
+PyObject * rev_swig_ptr(ctype *src, npy_intp size) {
+    return PyArray_SimpleNewFromData(1, &size, numpytype, src);
+}
+%}
+
+PyObject * rev_swig_ptr(ctype *src, size_t size);
+
+%enddef
+
+REV_SWIG_PTR(float, NPY_FLOAT32);
+REV_SWIG_PTR(double, NPY_FLOAT64);
+REV_SWIG_PTR(unsigned char, NPY_UINT8);
+REV_SWIG_PTR(char, NPY_INT8);
+REV_SWIG_PTR(unsigned short, NPY_UINT16);
+REV_SWIG_PTR(short, NPY_INT16);
+REV_SWIG_PTR(int, NPY_INT32);
+REV_SWIG_PTR(unsigned int, NPY_UINT32);
+REV_SWIG_PTR(int64_t, NPY_INT64);
+REV_SWIG_PTR(uint64_t, NPY_UINT64);
+
+#endif
+
+
+
+/*******************************************************************
+ * How should the template objects appear in the scripting language?
+ *******************************************************************/
+
+// answer: the same as the C++ typedefs, but we still have to redefine them
+
+%template() faiss::CMin<float, int64_t>;
+%template() faiss::CMin<int, int64_t>;
+%template() faiss::CMax<float, int64_t>;
+%template() faiss::CMax<int, int64_t>;
+
+%template(float_minheap_array_t) faiss::HeapArray<faiss::CMin<float, int64_t> >;
+%template(int_minheap_array_t) faiss::HeapArray<faiss::CMin<int, int64_t> >;
+
+%template(float_maxheap_array_t) faiss::HeapArray<faiss::CMax<float, int64_t> >;
+%template(int_maxheap_array_t) faiss::HeapArray<faiss::CMax<int, int64_t> >;
+
+%template(CMin_float_partition_fuzzy)
+    faiss::partition_fuzzy<faiss::CMin<float, int64_t> >;
+%template(CMax_float_partition_fuzzy)
+    faiss::partition_fuzzy<faiss::CMax<float, int64_t> >;
+
+%template(AlignedTableUint8) faiss::AlignedTable<uint8_t>;
+%template(AlignedTableUint16) faiss::AlignedTable<uint16_t>;
+%template(AlignedTableFloat32) faiss::AlignedTable<float>;
+
+%inline %{
+
+// SWIG seems to have has some trouble resolving the template type here, so
+// declare explicitly
+uint16_t CMax_uint16_partition_fuzzy(
+        uint16_t *vals, int64_t *ids, size_t n,
+        size_t q_min, size_t q_max, size_t * q_out)
+{
+    return faiss::partition_fuzzy<faiss::CMax<unsigned short, int64_t> >(
+        vals, ids, n, q_min, q_max, q_out);
+}
+
+uint16_t CMin_uint16_partition_fuzzy(
+        uint16_t *vals, int64_t *ids, size_t n,
+        size_t q_min, size_t q_max, size_t * q_out)
+{
+    return faiss::partition_fuzzy<faiss::CMin<unsigned short, int64_t> >(
+        vals, ids, n, q_min, q_max, q_out);
+}
+
+// and overload with the int32 version
+
+uint16_t CMax_uint16_partition_fuzzy(
+        uint16_t *vals, int *ids, size_t n,
+        size_t q_min, size_t q_max, size_t * q_out)
+{
+    return faiss::partition_fuzzy<faiss::CMax<unsigned short, int> >(
+        vals, ids, n, q_min, q_max, q_out);
+}
+
+uint16_t CMin_uint16_partition_fuzzy(
+        uint16_t *vals, int *ids, size_t n,
+        size_t q_min, size_t q_max, size_t * q_out)
+{
+    return faiss::partition_fuzzy<faiss::CMin<unsigned short, int> >(
+        vals, ids, n, q_min, q_max, q_out);
+}
+
+%}
+
+/*******************************************************************
+ * Expose a few basic functions
+ *******************************************************************/
+
+
+void omp_set_num_threads (int num_threads);
+int omp_get_max_threads ();
+void *memcpy(void *dest, const void *src, size_t n);
+
+
+/*******************************************************************
+ * For Faiss/Pytorch interop via pointers encoded as longs
+ *******************************************************************/
+
+%inline %{
+uint8_t * cast_integer_to_uint8_ptr (int64_t x) {
+    return (uint8_t*)x;
+}
+
+float * cast_integer_to_float_ptr (int64_t x) {
+    return (float*)x;
+}
+
+faiss::Index::idx_t* cast_integer_to_idx_t_ptr (int64_t x) {
+    return (faiss::Index::idx_t*)x;
+}
+
+int * cast_integer_to_int_ptr (int64_t x) {
+    return (int*)x;
+}
+
+void * cast_integer_to_void_ptr (int64_t x) {
+    return (void*)x;
+}
+
+%}
+
+
+/*******************************************************************
+ * Range search interface
+ *******************************************************************/
+
+
+%inline %{
+
+// numpy misses a hash table implementation, hence this class. It
+// represents not found values as -1 like in the Index implementation
+
+struct MapLong2Long {
+    std::unordered_map<int64_t, int64_t> map;
+
+    void add(size_t n, const int64_t *keys, const int64_t *vals) {
+        map.reserve(map.size() + n);
+        for (size_t i = 0; i < n; i++) {
+            map[keys[i]] = vals[i];
+        }
+    }
+
+    int64_t search(int64_t key) {
+        if (map.count(key) == 0) {
+            return -1;
+        } else {
+            return map[key];
+        }
+    }
+
+    void search_multiple(size_t n, int64_t *keys, int64_t * vals) {
+        for (size_t i = 0; i < n; i++) {
+            vals[i] = search(keys[i]);
+        }
+    }
+};
+
+%}
+
+
+
+
+
+%inline %{
+    void wait() {
+        // in gdb, use return to get out of this function
+        for(int i = 0; i == 0; i += 0);
+    }
+ %}
+
+// End of file...
diff --git a/faiss/python/swigfaiss_avx2.swig b/faiss/python/swigfaiss_avx2.swig
index 5c32e46f1e4c262b9060ac20d30d46abc257ed24..3756d63a5097b3a46baddc839457f665336f82ba 100644
--- a/faiss/python/swigfaiss_avx2.swig
+++ b/faiss/python/swigfaiss_avx2.swig
@@ -325,16 +325,16 @@ void gpu_sync_all_devices()
 %include  <faiss/gpu/GpuResources.h>
 %include  <faiss/gpu/StandardGpuResources.h>
 
-typedef CUstream_st* cudaStream_t;
+typedef ihipStream_t* hipStream_t;
 
 %inline %{
 
-// interop between pytorch exposed cudaStream_t and faiss
-cudaStream_t cast_integer_to_cudastream_t(int64_t x) {
-  return (cudaStream_t) x;
+// interop between pytorch exposed hipStream_t and faiss
+hipStream_t cast_integer_to_cudastream_t(int64_t x) {
+  return (hipStream_t) x;
 }
 
-int64_t cast_cudastream_t_to_integer(cudaStream_t x) {
+int64_t cast_cudastream_t_to_integer(hipStream_t x) {
   return (int64_t) x;
 }
 
diff --git a/faiss/python/swigfaiss_avx2.swig.bak b/faiss/python/swigfaiss_avx2.swig.bak
new file mode 100644
index 0000000000000000000000000000000000000000..5c32e46f1e4c262b9060ac20d30d46abc257ed24
--- /dev/null
+++ b/faiss/python/swigfaiss_avx2.swig.bak
@@ -0,0 +1,1011 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+// -*- C++ -*-
+
+// This file describes the C++-scripting language bridge for Python (and formerly Lua).
+// It contains mainly includes and a few macros. There are
+// 2 preprocessor macros of interest:
+
+// SWIGPYTHON: Python-specific code
+// GPU_WRAPPER: also compile interfaces for GPU.
+
+%module swigfaiss;
+
+// NOTE: While parsing the headers to generate the interface, SWIG does not know
+// about `_MSC_VER`.
+// TODO: Remove the need for this hack.
+#ifdef SWIGWIN
+#define _MSC_VER
+%include <windows.i>
+#endif // SWIGWIN
+
+// fbode SWIG fails on warnings, so make them non fatal
+#pragma SWIG nowarn=321
+#pragma SWIG nowarn=403
+#pragma SWIG nowarn=325
+#pragma SWIG nowarn=389
+#pragma SWIG nowarn=341
+#pragma SWIG nowarn=512
+#pragma SWIG nowarn=362
+
+%include <stdint.i>
+
+typedef uint64_t size_t;
+
+
+#define __restrict
+
+
+/*******************************************************************
+ * Copied verbatim to wrapper. Contains the C++-visible includes, and
+ * the language includes for their respective matrix libraries.
+ *******************************************************************/
+
+%{
+
+
+#include <stdint.h>
+#include <omp.h>
+
+
+
+#ifdef SWIGPYTHON
+
+#undef popcount64
+
+#define SWIG_FILE_WITH_INIT
+#define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION
+#include <numpy/arrayobject.h>
+
+#endif
+
+
+#include <faiss/IndexFlat.h>
+#include <faiss/VectorTransform.h>
+#include <faiss/IndexPreTransform.h>
+#include <faiss/IndexLSH.h>
+#include <faiss/IndexPQ.h>
+#include <faiss/IndexAdditiveQuantizer.h>
+#include <faiss/IndexIVF.h>
+#include <faiss/IndexIVFPQ.h>
+#include <faiss/Index2Layer.h>
+#include <faiss/IndexIVFPQR.h>
+#include <faiss/IndexIVFFlat.h>
+
+#include <faiss/IndexPQFastScan.h>
+#include <faiss/IndexIVFPQFastScan.h>
+#include <faiss/utils/quantize_lut.h>
+
+#include <faiss/IndexScalarQuantizer.h>
+#include <faiss/IndexIVFAdditiveQuantizer.h>
+#include <faiss/IndexIVFSpectralHash.h>
+#include <faiss/impl/ThreadedIndex.h>
+#include <faiss/IndexShards.h>
+#include <faiss/IndexReplicas.h>
+#include <faiss/impl/HNSW.h>
+#include <faiss/IndexHNSW.h>
+
+#include <faiss/impl/kmeans1d.h>
+
+#include <faiss/impl/NNDescent.h>
+#include <faiss/IndexNNDescent.h>
+
+#include <faiss/impl/NSG.h>
+#include <faiss/IndexNSG.h>
+
+#include <faiss/MetaIndexes.h>
+#include <faiss/IndexRefine.h>
+
+#include <faiss/impl/FaissAssert.h>
+
+#include <faiss/IndexBinaryFlat.h>
+#include <faiss/IndexBinaryIVF.h>
+#include <faiss/IndexBinaryFromFloat.h>
+#include <faiss/IndexBinaryHNSW.h>
+#include <faiss/IndexBinaryHash.h>
+
+#include <faiss/impl/io.h>
+#include <faiss/index_io.h>
+#include <faiss/clone_index.h>
+
+#include <faiss/IVFlib.h>
+#include <faiss/utils/utils.h>
+#include <faiss/utils/distances.h>
+#include <faiss/utils/extra_distances.h>
+#include <faiss/utils/random.h>
+#include <faiss/utils/Heap.h>
+#include <faiss/utils/AlignedTable.h>
+#include <faiss/utils/partitioning.h>
+#include <faiss/impl/AuxIndexStructures.h>
+#include <faiss/impl/AdditiveQuantizer.h>
+#include <faiss/impl/ResidualQuantizer.h>
+#include <faiss/impl/LocalSearchQuantizer.h>
+
+#include <faiss/invlists/BlockInvertedLists.h>
+
+#ifndef _MSC_VER
+#include <faiss/invlists/OnDiskInvertedLists.h>
+#endif // !_MSC_VER
+
+#include <faiss/Clustering.h>
+
+#include <faiss/utils/hamming.h>
+
+#include <faiss/AutoTune.h>
+#include <faiss/MatrixStats.h>
+#include <faiss/index_factory.h>
+
+#include <faiss/impl/lattice_Zn.h>
+#include <faiss/IndexLattice.h>
+
+
+%}
+
+/********************************************************
+ * GIL manipulation and exception handling
+ ********************************************************/
+
+#ifdef SWIGPYTHON
+// %catches(faiss::FaissException);
+
+
+// Python-specific: release GIL by default for all functions
+%exception {
+    Py_BEGIN_ALLOW_THREADS
+    try {
+        $action
+    } catch(faiss::FaissException & e) {
+        PyEval_RestoreThread(_save);
+
+        if (PyErr_Occurred()) {
+            // some previous code already set the error type.
+        } else {
+            PyErr_SetString(PyExc_RuntimeError, e.what());
+        }
+        SWIG_fail;
+    } catch(std::bad_alloc & ba) {
+        PyEval_RestoreThread(_save);
+        PyErr_SetString(PyExc_MemoryError, "std::bad_alloc");
+        SWIG_fail;
+    } catch(const std::exception& ex) {
+        PyEval_RestoreThread(_save);
+        std::string what = std::string("C++ exception ") + ex.what();
+        PyErr_SetString(PyExc_RuntimeError, what.c_str());
+        SWIG_fail;
+    }
+    Py_END_ALLOW_THREADS
+}
+
+#endif
+
+
+/*******************************************************************
+ * Types of vectors we want to manipulate at the scripting language
+ * level.
+ *******************************************************************/
+
+// simplified interface for vector
+namespace std {
+
+    template<class T>
+    class vector {
+    public:
+        vector();
+        void push_back(T);
+        void clear();
+        T * data();
+        size_t size();
+        T at (size_t n) const;
+        T & operator [] (size_t n);
+        void resize (size_t n);
+
+        void swap (vector<T> & other);
+    };
+};
+
+%include <std_string.i>
+%include <std_pair.i>
+%include <std_map.i>
+%include <std_shared_ptr.i>
+
+// primitive array types
+%template(Float32Vector) std::vector<float>;
+%template(Float64Vector) std::vector<double>;
+%template(Int8Vector) std::vector<int8_t>;
+%template(Int16Vector) std::vector<int16_t>;
+%template(Int32Vector) std::vector<int32_t>;
+%template(Int64Vector) std::vector<int64_t>;
+%template(UInt8Vector) std::vector<uint8_t>;
+%template(UInt16Vector) std::vector<uint16_t>;
+%template(UInt32Vector) std::vector<uint32_t>;
+%template(UInt64Vector) std::vector<uint64_t>;
+
+%template(Float32VectorVector) std::vector<std::vector<float> >;
+%template(UInt8VectorVector) std::vector<std::vector<uint8_t> >;
+%template(Int32VectorVector) std::vector<std::vector<int32_t> >;
+%template(Int64VectorVector) std::vector<std::vector<int64_t> >;
+%template(VectorTransformVector) std::vector<faiss::VectorTransform*>;
+%template(OperatingPointVector) std::vector<faiss::OperatingPoint>;
+%template(InvertedListsPtrVector) std::vector<faiss::InvertedLists*>;
+%template(RepeatVector) std::vector<faiss::Repeat>;
+%template(ClusteringIterationStatsVector) std::vector<faiss::ClusteringIterationStats>;
+
+#ifndef SWIGWIN
+%template(OnDiskOneListVector) std::vector<faiss::OnDiskOneList>;
+#endif // !SWIGWIN
+
+#ifdef GPU_WRAPPER
+%template(GpuResourcesVector) std::vector<faiss::gpu::GpuResourcesProvider*>;
+#endif
+
+// produces an error on the Mac
+%ignore faiss::hamming;
+
+/*******************************************************************
+ * Parse headers
+ *******************************************************************/
+
+%include <faiss/impl/platform_macros.h>
+
+%ignore *::cmp;
+
+%include <faiss/utils/ordered_key_value.h>
+%include <faiss/utils/Heap.h>
+
+// this ignore seems to be ignored, so disable W362 above
+%ignore faiss::AlignedTable::operator=;
+
+%include <faiss/utils/AlignedTable.h>
+%include <faiss/utils/partitioning.h>
+%include <faiss/utils/hamming.h>
+
+int get_num_gpus();
+void gpu_profiler_start();
+void gpu_profiler_stop();
+void gpu_sync_all_devices();
+
+#ifdef GPU_WRAPPER
+
+%shared_ptr(faiss::gpu::GpuResources);
+%shared_ptr(faiss::gpu::StandardGpuResourcesImpl);
+
+%{
+
+#include <faiss/gpu/StandardGpuResources.h>
+#include <faiss/gpu/GpuIndicesOptions.h>
+#include <faiss/gpu/GpuClonerOptions.h>
+#include <faiss/gpu/GpuIndex.h>
+#include <faiss/gpu/GpuIndexFlat.h>
+#include <faiss/gpu/GpuIndexIVF.h>
+#include <faiss/gpu/GpuIndexIVFPQ.h>
+#include <faiss/gpu/GpuIndexIVFFlat.h>
+#include <faiss/gpu/GpuIndexIVFScalarQuantizer.h>
+#include <faiss/gpu/GpuIndexBinaryFlat.h>
+#include <faiss/gpu/GpuAutoTune.h>
+#include <faiss/gpu/GpuCloner.h>
+#include <faiss/gpu/GpuDistance.h>
+#include <faiss/gpu/GpuIcmEncoder.h>
+
+int get_num_gpus()
+{
+    return faiss::gpu::getNumDevices();
+}
+
+void gpu_profiler_start()
+{
+    return faiss::gpu::profilerStart();
+}
+
+void gpu_profiler_stop()
+{
+    return faiss::gpu::profilerStop();
+}
+
+void gpu_sync_all_devices()
+{
+    return faiss::gpu::synchronizeAllDevices();
+}
+
+%}
+
+%template() std::pair<int, uint64_t>;
+%template() std::map<std::string, std::pair<int, uint64_t> >;
+%template() std::map<int, std::map<std::string, std::pair<int, uint64_t> > >;
+
+// causes weird wrapper bug
+%ignore *::allocMemoryHandle;
+%ignore faiss::gpu::GpuMemoryReservation;
+%ignore faiss::gpu::GpuMemoryReservation::operator=(GpuMemoryReservation&&);
+
+%include  <faiss/gpu/GpuResources.h>
+%include  <faiss/gpu/StandardGpuResources.h>
+
+typedef CUstream_st* cudaStream_t;
+
+%inline %{
+
+// interop between pytorch exposed cudaStream_t and faiss
+cudaStream_t cast_integer_to_cudastream_t(int64_t x) {
+  return (cudaStream_t) x;
+}
+
+int64_t cast_cudastream_t_to_integer(cudaStream_t x) {
+  return (int64_t) x;
+}
+
+%}
+
+#else
+
+%{
+int get_num_gpus()
+{
+    return 0;
+}
+
+void gpu_profiler_start()
+{
+}
+
+void gpu_profiler_stop()
+{
+}
+
+void gpu_sync_all_devices()
+{
+}
+%}
+
+
+#endif
+
+// order matters because includes are not recursive
+
+%include  <faiss/utils/utils.h>
+%include  <faiss/utils/distances.h>
+%include  <faiss/utils/random.h>
+
+%include  <faiss/MetricType.h>
+
+%newobject *::get_distance_computer() const;
+%include  <faiss/Index.h>
+%include  <faiss/IndexFlatCodes.h>
+%include  <faiss/IndexFlat.h>
+%include  <faiss/Clustering.h>
+
+%include  <faiss/utils/extra_distances.h>
+
+%ignore faiss::ProductQuantizer::get_centroids(size_t,size_t) const;
+
+%include  <faiss/impl/ProductQuantizer.h>
+%include  <faiss/impl/AdditiveQuantizer.h>
+%include  <faiss/impl/ResidualQuantizer.h>
+%include  <faiss/impl/LocalSearchQuantizer.h>
+
+%include  <faiss/VectorTransform.h>
+%include  <faiss/IndexPreTransform.h>
+%include  <faiss/IndexRefine.h>
+%include  <faiss/IndexLSH.h>
+%include  <faiss/impl/PolysemousTraining.h>
+%include  <faiss/IndexPQ.h>
+%include  <faiss/IndexAdditiveQuantizer.h>
+%include  <faiss/impl/io.h>
+
+%include  <faiss/invlists/InvertedLists.h>
+%include  <faiss/invlists/InvertedListsIOHook.h>
+%ignore BlockInvertedListsIOHook;
+%include  <faiss/invlists/BlockInvertedLists.h>
+%include  <faiss/invlists/DirectMap.h>
+%ignore InvertedListScanner;
+%ignore BinaryInvertedListScanner;
+%include  <faiss/IndexIVF.h>
+// NOTE(hoss): SWIG (wrongly) believes the overloaded const version shadows the
+//   non-const one.
+%warnfilter(509) extract_index_ivf;
+%warnfilter(509) try_extract_index_ivf;
+%include  <faiss/IVFlib.h>
+%include  <faiss/impl/ScalarQuantizer.h>
+%include  <faiss/IndexScalarQuantizer.h>
+%include  <faiss/IndexIVFSpectralHash.h>
+%include  <faiss/IndexIVFAdditiveQuantizer.h>
+%include  <faiss/impl/HNSW.h>
+%include  <faiss/IndexHNSW.h>
+
+%include <faiss/impl/kmeans1d.h>
+
+%ignore faiss::nndescent::Nhood::lock;
+%include  <faiss/impl/NNDescent.h>
+%include  <faiss/IndexNNDescent.h>
+
+%include  <faiss/IndexIVFFlat.h>
+%include  <faiss/impl/NSG.h>
+%include  <faiss/IndexNSG.h>
+
+#ifndef SWIGWIN
+%warnfilter(401) faiss::OnDiskInvertedListsIOHook;
+%ignore OnDiskInvertedListsIOHook;
+%include  <faiss/invlists/OnDiskInvertedLists.h>
+#endif // !SWIGWIN
+
+%include  <faiss/impl/lattice_Zn.h>
+%include  <faiss/IndexLattice.h>
+
+%ignore faiss::IndexIVFPQ::alloc_type;
+%include  <faiss/IndexIVFPQ.h>
+%include  <faiss/IndexIVFPQR.h>
+%include  <faiss/Index2Layer.h>
+
+%include  <faiss/IndexPQFastScan.h>
+%include  <faiss/IndexIVFPQFastScan.h>
+%include  <faiss/utils/quantize_lut.h>
+
+%include  <faiss/IndexBinary.h>
+%include  <faiss/IndexBinaryFlat.h>
+%include  <faiss/IndexBinaryIVF.h>
+%include  <faiss/IndexBinaryFromFloat.h>
+%include  <faiss/IndexBinaryHNSW.h>
+%include  <faiss/IndexBinaryHash.h>
+
+%include  <faiss/impl/ThreadedIndex.h>
+%template(ThreadedIndexBase) faiss::ThreadedIndex<faiss::Index>;
+%template(ThreadedIndexBaseBinary) faiss::ThreadedIndex<faiss::IndexBinary>;
+
+%include  <faiss/IndexShards.h>
+%template(IndexShards) faiss::IndexShardsTemplate<faiss::Index>;
+%template(IndexBinaryShards) faiss::IndexShardsTemplate<faiss::IndexBinary>;
+
+%include  <faiss/IndexReplicas.h>
+%template(IndexReplicas) faiss::IndexReplicasTemplate<faiss::Index>;
+%template(IndexBinaryReplicas) faiss::IndexReplicasTemplate<faiss::IndexBinary>;
+
+%include  <faiss/MetaIndexes.h>
+%template(IndexIDMap) faiss::IndexIDMapTemplate<faiss::Index>;
+%template(IndexBinaryIDMap) faiss::IndexIDMapTemplate<faiss::IndexBinary>;
+%template(IndexIDMap2) faiss::IndexIDMap2Template<faiss::Index>;
+%template(IndexBinaryIDMap2) faiss::IndexIDMap2Template<faiss::IndexBinary>;
+
+
+
+%ignore faiss::BufferList::Buffer;
+%ignore faiss::RangeSearchPartialResult::QueryResult;
+%ignore faiss::IDSelectorBatch::set;
+%ignore faiss::IDSelectorBatch::bloom;
+%ignore faiss::InterruptCallback::instance;
+%ignore faiss::InterruptCallback::lock;
+
+%include  <faiss/impl/AuxIndexStructures.h>
+
+
+#ifdef GPU_WRAPPER
+
+// quiet SWIG warnings
+%ignore faiss::gpu::GpuIndexIVF::GpuIndexIVF;
+
+%include  <faiss/gpu/GpuIndicesOptions.h>
+%include  <faiss/gpu/GpuClonerOptions.h>
+%include  <faiss/gpu/GpuIndex.h>
+%include  <faiss/gpu/GpuIndexFlat.h>
+%include  <faiss/gpu/GpuIndexIVF.h>
+%include  <faiss/gpu/GpuIndexIVFPQ.h>
+%include  <faiss/gpu/GpuIndexIVFFlat.h>
+%include  <faiss/gpu/GpuIndexIVFScalarQuantizer.h>
+%include  <faiss/gpu/GpuIndexBinaryFlat.h>
+%include  <faiss/gpu/GpuDistance.h>
+%include  <faiss/gpu/GpuIcmEncoder.h>
+
+
+#endif
+
+
+
+
+
+
+
+
+/*******************************************************************
+ * downcast return of some functions so that the sub-class is used
+ * instead of the generic upper-class.
+ *******************************************************************/
+
+
+#ifdef SWIGPYTHON
+
+%define DOWNCAST(subclass)
+    if (dynamic_cast<faiss::subclass *> ($1)) {
+      $result = SWIG_NewPointerObj($1,SWIGTYPE_p_faiss__ ## subclass,$owner);
+    } else
+%enddef
+
+%define DOWNCAST2(subclass, longname)
+    if (dynamic_cast<faiss::subclass *> ($1)) {
+      $result = SWIG_NewPointerObj($1,SWIGTYPE_p_faiss__ ## longname,$owner);
+    } else
+%enddef
+
+%define DOWNCAST_GPU(subclass)
+    if (dynamic_cast<faiss::gpu::subclass *> ($1)) {
+      $result = SWIG_NewPointerObj($1,SWIGTYPE_p_faiss__gpu__ ## subclass,$owner);
+    } else
+%enddef
+
+#endif
+
+%newobject read_index;
+%newobject read_index_binary;
+%newobject read_VectorTransform;
+%newobject read_ProductQuantizer;
+%newobject clone_index;
+%newobject clone_VectorTransform;
+
+// Subclasses should appear before their parent
+%typemap(out) faiss::Index * {
+    DOWNCAST2 ( IndexIDMap, IndexIDMapTemplateT_faiss__Index_t )
+    DOWNCAST2 ( IndexIDMap2, IndexIDMap2TemplateT_faiss__Index_t )
+    DOWNCAST2 ( IndexShards, IndexShardsTemplateT_faiss__Index_t )
+    DOWNCAST2 ( IndexReplicas, IndexReplicasTemplateT_faiss__Index_t )
+    DOWNCAST ( IndexIVFPQR )
+    DOWNCAST ( IndexIVFPQ )
+    DOWNCAST ( IndexIVFPQFastScan )
+    DOWNCAST ( IndexIVFSpectralHash )
+    DOWNCAST ( IndexIVFScalarQuantizer )
+    DOWNCAST ( IndexIVFResidualQuantizer )
+    DOWNCAST ( IndexIVFLocalSearchQuantizer )
+    DOWNCAST ( IndexIVFFlatDedup )
+    DOWNCAST ( IndexIVFFlat )
+    DOWNCAST ( IndexIVF )
+    DOWNCAST ( IndexFlat )
+    DOWNCAST ( IndexRefineFlat )
+    DOWNCAST ( IndexRefine )
+    DOWNCAST ( IndexPQFastScan )
+    DOWNCAST ( IndexPQ )
+    DOWNCAST ( IndexResidualQuantizer )
+    DOWNCAST ( IndexLocalSearchQuantizer )
+    DOWNCAST ( ResidualCoarseQuantizer )
+    DOWNCAST ( LocalSearchCoarseQuantizer )
+    DOWNCAST ( IndexScalarQuantizer )
+    DOWNCAST ( IndexLSH )
+    DOWNCAST ( IndexLattice )
+    DOWNCAST ( IndexPreTransform )
+    DOWNCAST ( MultiIndexQuantizer )
+    DOWNCAST ( IndexHNSWFlat )
+    DOWNCAST ( IndexHNSWPQ )
+    DOWNCAST ( IndexHNSWSQ )
+    DOWNCAST ( IndexHNSW2Level )
+    DOWNCAST ( IndexNNDescentFlat )
+    DOWNCAST ( IndexNSGFlat )
+    DOWNCAST ( Index2Layer )
+#ifdef GPU_WRAPPER
+    DOWNCAST_GPU ( GpuIndexIVFPQ )
+    DOWNCAST_GPU ( GpuIndexIVFFlat )
+    DOWNCAST_GPU ( GpuIndexIVFScalarQuantizer )
+    DOWNCAST_GPU ( GpuIndexFlat )
+#endif
+    // default for non-recognized classes
+    DOWNCAST ( Index )
+    if ($1 == NULL)
+    {
+#ifdef SWIGPYTHON
+        $result = SWIG_Py_Void();
+#endif
+    } else {
+        assert(false);
+    }
+}
+
+%typemap(out) faiss::IndexBinary * {
+    DOWNCAST2 ( IndexBinaryReplicas, IndexReplicasTemplateT_faiss__IndexBinary_t )
+    DOWNCAST2 ( IndexBinaryIDMap, IndexIDMapTemplateT_faiss__IndexBinary_t )
+    DOWNCAST2 ( IndexBinaryIDMap2, IndexIDMap2TemplateT_faiss__IndexBinary_t )
+    DOWNCAST ( IndexBinaryIVF )
+    DOWNCAST ( IndexBinaryFlat )
+    DOWNCAST ( IndexBinaryFromFloat )
+    DOWNCAST ( IndexBinaryHNSW )
+    DOWNCAST ( IndexBinaryHash )
+    DOWNCAST ( IndexBinaryMultiHash )
+#ifdef GPU_WRAPPER
+    DOWNCAST_GPU ( GpuIndexBinaryFlat )
+#endif
+    // default for non-recognized classes
+    DOWNCAST ( IndexBinary )
+    if ($1 == NULL)
+    {
+#ifdef SWIGPYTHON
+        $result = SWIG_Py_Void();
+#endif
+    } else {
+        assert(false);
+    }
+}
+
+%typemap(out) faiss::VectorTransform * {
+    DOWNCAST (RemapDimensionsTransform)
+    DOWNCAST (OPQMatrix)
+    DOWNCAST (PCAMatrix)
+    DOWNCAST (ITQMatrix)
+    DOWNCAST (RandomRotationMatrix)
+    DOWNCAST (LinearTransform)
+    DOWNCAST (NormalizationTransform)
+    DOWNCAST (CenteringTransform)
+    DOWNCAST (ITQTransform)
+    DOWNCAST (VectorTransform)
+    {
+        assert(false);
+    }
+}
+
+%typemap(out) faiss::InvertedLists * {
+    DOWNCAST (ArrayInvertedLists)
+    DOWNCAST (BlockInvertedLists)
+#ifndef SWIGWIN
+    DOWNCAST (OnDiskInvertedLists)
+#endif // !SWIGWIN
+    DOWNCAST (VStackInvertedLists)
+    DOWNCAST (HStackInvertedLists)
+    DOWNCAST (MaskedInvertedLists)
+    DOWNCAST (InvertedLists)
+    {
+        assert(false);
+    }
+}
+
+// just to downcast pointers that come from elsewhere (eg. direct
+// access to object fields)
+%inline %{
+faiss::Index * downcast_index (faiss::Index *index)
+{
+    return index;
+}
+faiss::VectorTransform * downcast_VectorTransform (faiss::VectorTransform *vt)
+{
+    return vt;
+}
+faiss::IndexBinary * downcast_IndexBinary (faiss::IndexBinary *index)
+{
+    return index;
+}
+faiss::InvertedLists * downcast_InvertedLists (faiss::InvertedLists *il)
+{
+    return il;
+}
+%}
+
+%include  <faiss/index_io.h>
+%include  <faiss/clone_index.h>
+%newobject index_factory;
+%newobject index_binary_factory;
+
+%include  <faiss/AutoTune.h>
+%include  <faiss/index_factory.h>
+%include  <faiss/MatrixStats.h>
+
+
+#ifdef GPU_WRAPPER
+
+%include  <faiss/gpu/GpuAutoTune.h>
+
+%newobject index_gpu_to_cpu;
+%newobject index_cpu_to_gpu;
+%newobject index_cpu_to_gpu_multiple;
+
+%include  <faiss/gpu/GpuCloner.h>
+
+#endif
+
+
+
+/*******************************************************************
+ * Support I/O to arbitrary functions
+ *******************************************************************/
+
+
+#ifdef SWIGPYTHON
+%include <faiss/python/python_callbacks.h>
+
+
+%{
+#include <faiss/python/python_callbacks.h>
+%}
+
+#endif
+
+
+
+// Python-specific: do not release GIL any more, as functions below
+// use the Python/C API
+#ifdef SWIGPYTHON
+%exception;
+#endif
+
+
+
+
+
+/*******************************************************************
+ * Python specific: numpy array <-> C++ pointer interface
+ *******************************************************************/
+
+#ifdef SWIGPYTHON
+
+%{
+PyObject *swig_ptr (PyObject *a)
+{
+
+    if (PyBytes_Check(a)) {
+        return SWIG_NewPointerObj(PyBytes_AsString(a), SWIGTYPE_p_char, 0);
+    }
+    if (PyByteArray_Check(a)) {
+        return SWIG_NewPointerObj(PyByteArray_AsString(a), SWIGTYPE_p_char, 0);
+    }
+    if(!PyArray_Check(a)) {
+        PyErr_SetString(PyExc_ValueError, "input not a numpy array");
+        return NULL;
+    }
+    PyArrayObject *ao = (PyArrayObject *)a;
+
+    if(!PyArray_ISCONTIGUOUS(ao)) {
+        PyErr_SetString(PyExc_ValueError, "array is not C-contiguous");
+        return NULL;
+    }
+    void * data = PyArray_DATA(ao);
+    if(PyArray_TYPE(ao) == NPY_FLOAT32) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_float, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_FLOAT64) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_double, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_FLOAT16) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_short, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_UINT8) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_char, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_INT8) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_char, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_UINT16) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_short, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_INT16) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_short, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_UINT32) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_int, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_INT32) {
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_int, 0);
+    }
+    if(PyArray_TYPE(ao) == NPY_UINT64) {
+#ifdef SWIGWORDSIZE64
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_long, 0);
+#else
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_unsigned_long_long, 0);
+#endif
+    }
+    if(PyArray_TYPE(ao) == NPY_INT64) {
+#ifdef SWIGWORDSIZE64
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_long, 0);
+#else
+        return SWIG_NewPointerObj(data, SWIGTYPE_p_long_long, 0);
+#endif
+    }
+    PyErr_SetString(PyExc_ValueError, "did not recognize array type");
+    return NULL;
+}
+
+
+struct PythonInterruptCallback: faiss::InterruptCallback {
+
+    bool want_interrupt () override {
+        int err;
+        {
+            PyGILState_STATE gstate;
+            gstate = PyGILState_Ensure();
+            err = PyErr_CheckSignals();
+            PyGILState_Release(gstate);
+        }
+        return err == -1;
+    }
+
+};
+
+
+%}
+
+
+%init %{
+    /* needed, else crash at runtime */
+    import_array();
+
+    faiss::InterruptCallback::instance.reset(new PythonInterruptCallback());
+
+%}
+
+// return a pointer usable as input for functions that expect pointers
+PyObject *swig_ptr (PyObject *a);
+
+%define REV_SWIG_PTR(ctype, numpytype)
+
+%{
+PyObject * rev_swig_ptr(ctype *src, npy_intp size) {
+    return PyArray_SimpleNewFromData(1, &size, numpytype, src);
+}
+%}
+
+PyObject * rev_swig_ptr(ctype *src, size_t size);
+
+%enddef
+
+REV_SWIG_PTR(float, NPY_FLOAT32);
+REV_SWIG_PTR(double, NPY_FLOAT64);
+REV_SWIG_PTR(unsigned char, NPY_UINT8);
+REV_SWIG_PTR(char, NPY_INT8);
+REV_SWIG_PTR(unsigned short, NPY_UINT16);
+REV_SWIG_PTR(short, NPY_INT16);
+REV_SWIG_PTR(int, NPY_INT32);
+REV_SWIG_PTR(unsigned int, NPY_UINT32);
+REV_SWIG_PTR(int64_t, NPY_INT64);
+REV_SWIG_PTR(uint64_t, NPY_UINT64);
+
+#endif
+
+
+
+/*******************************************************************
+ * How should the template objects appear in the scripting language?
+ *******************************************************************/
+
+// answer: the same as the C++ typedefs, but we still have to redefine them
+
+%template() faiss::CMin<float, int64_t>;
+%template() faiss::CMin<int, int64_t>;
+%template() faiss::CMax<float, int64_t>;
+%template() faiss::CMax<int, int64_t>;
+
+%template(float_minheap_array_t) faiss::HeapArray<faiss::CMin<float, int64_t> >;
+%template(int_minheap_array_t) faiss::HeapArray<faiss::CMin<int, int64_t> >;
+
+%template(float_maxheap_array_t) faiss::HeapArray<faiss::CMax<float, int64_t> >;
+%template(int_maxheap_array_t) faiss::HeapArray<faiss::CMax<int, int64_t> >;
+
+%template(CMin_float_partition_fuzzy)
+    faiss::partition_fuzzy<faiss::CMin<float, int64_t> >;
+%template(CMax_float_partition_fuzzy)
+    faiss::partition_fuzzy<faiss::CMax<float, int64_t> >;
+
+%template(AlignedTableUint8) faiss::AlignedTable<uint8_t>;
+%template(AlignedTableUint16) faiss::AlignedTable<uint16_t>;
+%template(AlignedTableFloat32) faiss::AlignedTable<float>;
+
+%inline %{
+
+// SWIG seems to have has some trouble resolving the template type here, so
+// declare explicitly
+uint16_t CMax_uint16_partition_fuzzy(
+        uint16_t *vals, int64_t *ids, size_t n,
+        size_t q_min, size_t q_max, size_t * q_out)
+{
+    return faiss::partition_fuzzy<faiss::CMax<unsigned short, int64_t> >(
+        vals, ids, n, q_min, q_max, q_out);
+}
+
+uint16_t CMin_uint16_partition_fuzzy(
+        uint16_t *vals, int64_t *ids, size_t n,
+        size_t q_min, size_t q_max, size_t * q_out)
+{
+    return faiss::partition_fuzzy<faiss::CMin<unsigned short, int64_t> >(
+        vals, ids, n, q_min, q_max, q_out);
+}
+
+// and overload with the int32 version
+
+uint16_t CMax_uint16_partition_fuzzy(
+        uint16_t *vals, int *ids, size_t n,
+        size_t q_min, size_t q_max, size_t * q_out)
+{
+    return faiss::partition_fuzzy<faiss::CMax<unsigned short, int> >(
+        vals, ids, n, q_min, q_max, q_out);
+}
+
+uint16_t CMin_uint16_partition_fuzzy(
+        uint16_t *vals, int *ids, size_t n,
+        size_t q_min, size_t q_max, size_t * q_out)
+{
+    return faiss::partition_fuzzy<faiss::CMin<unsigned short, int> >(
+        vals, ids, n, q_min, q_max, q_out);
+}
+
+%}
+
+/*******************************************************************
+ * Expose a few basic functions
+ *******************************************************************/
+
+
+void omp_set_num_threads (int num_threads);
+int omp_get_max_threads ();
+void *memcpy(void *dest, const void *src, size_t n);
+
+
+/*******************************************************************
+ * For Faiss/Pytorch interop via pointers encoded as longs
+ *******************************************************************/
+
+%inline %{
+uint8_t * cast_integer_to_uint8_ptr (int64_t x) {
+    return (uint8_t*)x;
+}
+
+float * cast_integer_to_float_ptr (int64_t x) {
+    return (float*)x;
+}
+
+faiss::Index::idx_t* cast_integer_to_idx_t_ptr (int64_t x) {
+    return (faiss::Index::idx_t*)x;
+}
+
+int * cast_integer_to_int_ptr (int64_t x) {
+    return (int*)x;
+}
+
+void * cast_integer_to_void_ptr (int64_t x) {
+    return (void*)x;
+}
+
+%}
+
+
+/*******************************************************************
+ * Range search interface
+ *******************************************************************/
+
+
+%inline %{
+
+// numpy misses a hash table implementation, hence this class. It
+// represents not found values as -1 like in the Index implementation
+
+struct MapLong2Long {
+    std::unordered_map<int64_t, int64_t> map;
+
+    void add(size_t n, const int64_t *keys, const int64_t *vals) {
+        map.reserve(map.size() + n);
+        for (size_t i = 0; i < n; i++) {
+            map[keys[i]] = vals[i];
+        }
+    }
+
+    int64_t search(int64_t key) {
+        if (map.count(key) == 0) {
+            return -1;
+        } else {
+            return map[key];
+        }
+    }
+
+    void search_multiple(size_t n, int64_t *keys, int64_t * vals) {
+        for (size_t i = 0; i < n; i++) {
+            vals[i] = search(keys[i]);
+        }
+    }
+};
+
+%}
+
+
+
+
+
+%inline %{
+    void wait() {
+        // in gdb, use return to get out of this function
+        for(int i = 0; i == 0; i += 0);
+    }
+ %}
+
+// End of file...
diff --git a/libopenblas.so.0 b/libopenblas.so.0
new file mode 100755
index 0000000000000000000000000000000000000000..d898087b71bcf0a34f6dad8802db272be3fb8433
Binary files /dev/null and b/libopenblas.so.0 differ
diff --git a/test_gpu.sh b/test_gpu.sh
new file mode 100755
index 0000000000000000000000000000000000000000..232984395492b65f6685a2f3419437b81b36e219
--- /dev/null
+++ b/test_gpu.sh
@@ -0,0 +1,15 @@
+cd build;
+export CPLUS_INCLUDE_PATH=/opt/dtk-21.04/include:/opt/dtk-21.04:/opencl/include
+export LD_LIBRARY_PATH=/home/huchen/intel-compiler-2017.5.239/mkl/lib/intel64_lin/:$LD_LIBRARY_PATH
+export PATH=/home/huchen/FAISS/swig-4.0.2-build/bin/:$PATH
+export CPLUS_INCLUDE_PATH=/opt/dtk-21.04/hiprand/include/:/opt/dtk-21.04/rocrand/include:$CPLUS_INCLUDE_PATH
+export LD_LIBRARY_PATH=/opt/dtk-21.04/hipblas/lib/:$LD_LIBRARY_PATH
+export LD_LIBRARY_PATH=/opt/dtk-21.04/llvm/lib:$LD_LIBRARY_PATH
+export LD_LIBRARY_PATH=/home/huchen/FAISS/faiss/build/faiss/gpu/test/:/home/huchen/FAISS/faiss/build/faiss/:/home/huchen/FAISS/faiss/build/lib/:$LD_LIBRARY_PATH
+#./faiss/gpu/test/TestGpuIndexFlat
+
+#export AMD_LOG_LEVEL=4
+#export AMD_OCL_WAIT_COMMAND=1
+#ctest3 -V -R TestGpuIndexFlat.IP_Float32
+#gdb ./faiss/gpu/test/TestGpuIndexFlat
+cd -
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index b0bdfd024515134d478d39d69488a7f4aac6ac9e..7575a7a6b0dee2ff4404d9004c2077bfb6007021 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -24,6 +24,9 @@ set(FAISS_TEST_SRC
 
 add_executable(faiss_test ${FAISS_TEST_SRC})
 
+# HC
+target_link_libraries(faiss_test PUBLIC openblas)
+
 if(FAISS_OPT_LEVEL STREQUAL "avx2")
   target_link_libraries(faiss_test PRIVATE faiss_avx2)
 else()